From 07116deded91b44327deed183d11acecd7f22dcb Mon Sep 17 00:00:00 2001
From: tasnim <tasneemjafsher@gmail.com>
Date: Thu, 11 Nov 2021 18:08:23 +0300
Subject: [PATCH 1/2] done

---
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 .../src/crypto/fipsmodule/bn/sqrt.c           |   502 +
 .../src/crypto/fipsmodule/bn/sqrt.c.grpc_back |   502 +
 .../src/crypto/fipsmodule/cipher/aead.c       |   284 +
 .../crypto/fipsmodule/cipher/aead.c.grpc_back |   284 +
 .../src/crypto/fipsmodule/cipher/cipher.c     |   620 +
 .../fipsmodule/cipher/cipher.c.grpc_back      |   620 +
 .../src/crypto/fipsmodule/cipher/e_aes.c      |  1302 +
 .../fipsmodule/cipher/e_aes.c.grpc_back       |  1302 +
 .../src/crypto/fipsmodule/cipher/e_des.c      |   237 +
 .../fipsmodule/cipher/e_des.c.grpc_back       |   237 +
 .../src/crypto/fipsmodule/cipher/internal.h   |   128 +
 .../fipsmodule/cipher/internal.h.grpc_back    |   128 +
 .../src/crypto/fipsmodule/delocate.h          |    89 +
 .../crypto/fipsmodule/delocate.h.grpc_back    |    89 +
 .../src/crypto/fipsmodule/des/des.c           |   785 +
 .../src/crypto/fipsmodule/des/des.c.grpc_back |   785 +
 .../src/crypto/fipsmodule/des/internal.h      |   240 +
 .../fipsmodule/des/internal.h.grpc_back       |   240 +
 .../src/crypto/fipsmodule/digest/digest.c     |   271 +
 .../fipsmodule/digest/digest.c.grpc_back      |   271 +
 .../src/crypto/fipsmodule/digest/digests.c    |   280 +
 .../fipsmodule/digest/digests.c.grpc_back     |   280 +
 .../src/crypto/fipsmodule/digest/internal.h   |   112 +
 .../fipsmodule/digest/internal.h.grpc_back    |   112 +
 .../crypto/fipsmodule/digest/md32_common.h    |   268 +
 .../fipsmodule/digest/md32_common.h.grpc_back |   268 +
 .../src/crypto/fipsmodule/ec/ec.c             |  1080 +
 .../src/crypto/fipsmodule/ec/ec.c.grpc_back   |  1080 +
 .../src/crypto/fipsmodule/ec/ec_key.c         |   479 +
 .../crypto/fipsmodule/ec/ec_key.c.grpc_back   |   479 +
 .../src/crypto/fipsmodule/ec/ec_montgomery.c  |   483 +
 .../fipsmodule/ec/ec_montgomery.c.grpc_back   |   483 +
 .../src/crypto/fipsmodule/ec/felem.c          |    82 +
 .../crypto/fipsmodule/ec/felem.c.grpc_back    |    82 +
 .../src/crypto/fipsmodule/ec/internal.h       |   503 +
 .../crypto/fipsmodule/ec/internal.h.grpc_back |   503 +
 .../src/crypto/fipsmodule/ec/oct.c            |   336 +
 .../src/crypto/fipsmodule/ec/oct.c.grpc_back  |   336 +
 .../src/crypto/fipsmodule/ec/p224-64.c        |  1187 +
 .../crypto/fipsmodule/ec/p224-64.c.grpc_back  |  1187 +
 .../crypto/fipsmodule/ec/p256-x86_64-table.h  |  9501 ++++++
 .../ec/p256-x86_64-table.h.grpc_back          |  9501 ++++++
 .../src/crypto/fipsmodule/ec/p256-x86_64.c    |   651 +
 .../fipsmodule/ec/p256-x86_64.c.grpc_back     |   651 +
 .../src/crypto/fipsmodule/ec/p256-x86_64.h    |   153 +
 .../fipsmodule/ec/p256-x86_64.h.grpc_back     |   153 +
 .../src/crypto/fipsmodule/ec/scalar.c         |    96 +
 .../crypto/fipsmodule/ec/scalar.c.grpc_back   |    96 +
 .../src/crypto/fipsmodule/ec/simple.c         |   380 +
 .../crypto/fipsmodule/ec/simple.c.grpc_back   |   380 +
 .../src/crypto/fipsmodule/ec/simple_mul.c     |    84 +
 .../fipsmodule/ec/simple_mul.c.grpc_back      |    84 +
 .../src/crypto/fipsmodule/ec/util.c           |   255 +
 .../src/crypto/fipsmodule/ec/util.c.grpc_back |   255 +
 .../src/crypto/fipsmodule/ec/wnaf.c           |   227 +
 .../src/crypto/fipsmodule/ec/wnaf.c.grpc_back |   227 +
 .../src/crypto/fipsmodule/ecdh/ecdh.c         |   122 +
 .../crypto/fipsmodule/ecdh/ecdh.c.grpc_back   |   122 +
 .../src/crypto/fipsmodule/ecdsa/ecdsa.c       |   313 +
 .../crypto/fipsmodule/ecdsa/ecdsa.c.grpc_back |   313 +
 .../crypto/fipsmodule/fips_shared_support.c   |    32 +
 .../fips_shared_support.c.grpc_back           |    32 +
 .../src/crypto/fipsmodule/hmac/hmac.c         |   228 +
 .../crypto/fipsmodule/hmac/hmac.c.grpc_back   |   228 +
 .../src/crypto/fipsmodule/is_fips.c           |    29 +
 .../src/crypto/fipsmodule/is_fips.c.grpc_back |    29 +
 .../src/crypto/fipsmodule/md4/md4.c           |   256 +
 .../src/crypto/fipsmodule/md4/md4.c.grpc_back |   256 +
 .../src/crypto/fipsmodule/md5/internal.h      |    37 +
 .../fipsmodule/md5/internal.h.grpc_back       |    37 +
 .../src/crypto/fipsmodule/md5/md5.c           |   301 +
 .../src/crypto/fipsmodule/md5/md5.c.grpc_back |   301 +
 .../src/crypto/fipsmodule/modes/cbc.c         |   167 +
 .../crypto/fipsmodule/modes/cbc.c.grpc_back   |   167 +
 .../src/crypto/fipsmodule/modes/cfb.c         |   202 +
 .../crypto/fipsmodule/modes/cfb.c.grpc_back   |   202 +
 .../src/crypto/fipsmodule/modes/ctr.c         |   200 +
 .../crypto/fipsmodule/modes/ctr.c.grpc_back   |   200 +
 .../src/crypto/fipsmodule/modes/gcm.c         |   729 +
 .../crypto/fipsmodule/modes/gcm.c.grpc_back   |   729 +
 .../src/crypto/fipsmodule/modes/gcm_nohw.c    |   304 +
 .../fipsmodule/modes/gcm_nohw.c.grpc_back     |   304 +
 .../src/crypto/fipsmodule/modes/internal.h    |   441 +
 .../fipsmodule/modes/internal.h.grpc_back     |   441 +
 .../src/crypto/fipsmodule/modes/ofb.c         |    96 +
 .../crypto/fipsmodule/modes/ofb.c.grpc_back   |    96 +
 .../src/crypto/fipsmodule/modes/polyval.c     |    91 +
 .../fipsmodule/modes/polyval.c.grpc_back      |    91 +
 .../src/crypto/fipsmodule/rand/ctrdrbg.c      |   202 +
 .../fipsmodule/rand/ctrdrbg.c.grpc_back       |   202 +
 .../src/crypto/fipsmodule/rand/internal.h     |   127 +
 .../fipsmodule/rand/internal.h.grpc_back      |   127 +
 .../src/crypto/fipsmodule/rand/rand.c         |   363 +
 .../crypto/fipsmodule/rand/rand.c.grpc_back   |   363 +
 .../src/crypto/fipsmodule/rand/urandom.c      |   481 +
 .../fipsmodule/rand/urandom.c.grpc_back       |   481 +
 .../src/crypto/fipsmodule/rsa/blinding.c      |   239 +
 .../fipsmodule/rsa/blinding.c.grpc_back       |   239 +
 .../src/crypto/fipsmodule/rsa/internal.h      |   126 +
 .../fipsmodule/rsa/internal.h.grpc_back       |   126 +
 .../src/crypto/fipsmodule/rsa/padding.c       |   695 +
 .../crypto/fipsmodule/rsa/padding.c.grpc_back |   695 +
 .../src/crypto/fipsmodule/rsa/rsa.c           |   885 +
 .../src/crypto/fipsmodule/rsa/rsa.c.grpc_back |   885 +
 .../src/crypto/fipsmodule/rsa/rsa_impl.c      |  1344 +
 .../fipsmodule/rsa/rsa_impl.c.grpc_back       |  1344 +
 .../crypto/fipsmodule/self_check/self_check.c |   654 +
 .../self_check/self_check.c.grpc_back         |   654 +
 .../src/crypto/fipsmodule/sha/internal.h      |    53 +
 .../fipsmodule/sha/internal.h.grpc_back       |    53 +
 .../src/crypto/fipsmodule/sha/sha1-altivec.c  |   361 +
 .../fipsmodule/sha/sha1-altivec.c.grpc_back   |   361 +
 .../src/crypto/fipsmodule/sha/sha1.c          |   371 +
 .../crypto/fipsmodule/sha/sha1.c.grpc_back    |   371 +
 .../src/crypto/fipsmodule/sha/sha256.c        |   343 +
 .../crypto/fipsmodule/sha/sha256.c.grpc_back  |   343 +
 .../src/crypto/fipsmodule/sha/sha512.c        |   535 +
 .../crypto/fipsmodule/sha/sha512.c.grpc_back  |   535 +
 .../src/crypto/fipsmodule/tls/internal.h      |    39 +
 .../fipsmodule/tls/internal.h.grpc_back       |    39 +
 .../src/crypto/fipsmodule/tls/kdf.c           |   165 +
 .../src/crypto/fipsmodule/tls/kdf.c.grpc_back |   165 +
 .../BoringSSL-GRPC/src/crypto/hkdf/hkdf.c     |   112 +
 .../src/crypto/hkdf/hkdf.c.grpc_back          |   112 +
 .../BoringSSL-GRPC/src/crypto/hrss/hrss.c     |  2100 ++
 .../src/crypto/hrss/hrss.c.grpc_back          |  2100 ++
 .../BoringSSL-GRPC/src/crypto/hrss/internal.h |    61 +
 .../src/crypto/hrss/internal.h.grpc_back      |    61 +
 .../Pods/BoringSSL-GRPC/src/crypto/internal.h |   834 +
 .../src/crypto/internal.h.grpc_back           |   834 +
 .../BoringSSL-GRPC/src/crypto/lhash/lhash.c   |   348 +
 .../src/crypto/lhash/lhash.c.grpc_back        |   348 +
 .../Pods/BoringSSL-GRPC/src/crypto/mem.c      |   342 +
 .../BoringSSL-GRPC/src/crypto/mem.c.grpc_back |   342 +
 .../Pods/BoringSSL-GRPC/src/crypto/obj/obj.c  |   549 +
 .../src/crypto/obj/obj.c.grpc_back            |   549 +
 .../BoringSSL-GRPC/src/crypto/obj/obj_dat.h   | 11571 +++++++
 .../src/crypto/obj/obj_dat.h.grpc_back        | 11571 +++++++
 .../BoringSSL-GRPC/src/crypto/obj/obj_xref.c  |   122 +
 .../src/crypto/obj/obj_xref.c.grpc_back       |   122 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_all.c   |   261 +
 .../src/crypto/pem/pem_all.c.grpc_back        |   261 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_info.c  |   360 +
 .../src/crypto/pem/pem_info.c.grpc_back       |   360 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_lib.c   |   777 +
 .../src/crypto/pem/pem_lib.c.grpc_back        |   777 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_oth.c   |    87 +
 .../src/crypto/pem/pem_oth.c.grpc_back        |    87 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_pk8.c   |   257 +
 .../src/crypto/pem/pem_pk8.c.grpc_back        |   257 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_pkey.c  |   218 +
 .../src/crypto/pem/pem_pkey.c.grpc_back       |   218 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_x509.c  |    65 +
 .../src/crypto/pem/pem_x509.c.grpc_back       |    65 +
 .../BoringSSL-GRPC/src/crypto/pem/pem_xaux.c  |    65 +
 .../src/crypto/pem/pem_xaux.c.grpc_back       |    65 +
 .../src/crypto/pkcs7/internal.h               |    49 +
 .../src/crypto/pkcs7/internal.h.grpc_back     |    49 +
 .../BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c   |   159 +
 .../src/crypto/pkcs7/pkcs7.c.grpc_back        |   159 +
 .../src/crypto/pkcs7/pkcs7_x509.c             |   385 +
 .../src/crypto/pkcs7/pkcs7_x509.c.grpc_back   |   385 +
 .../src/crypto/pkcs8/internal.h               |   131 +
 .../src/crypto/pkcs8/internal.h.grpc_back     |   131 +
 .../src/crypto/pkcs8/p5_pbev2.c               |   316 +
 .../src/crypto/pkcs8/p5_pbev2.c.grpc_back     |   316 +
 .../BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c   |   530 +
 .../src/crypto/pkcs8/pkcs8.c.grpc_back        |   530 +
 .../src/crypto/pkcs8/pkcs8_x509.c             |  1305 +
 .../src/crypto/pkcs8/pkcs8_x509.c.grpc_back   |  1305 +
 .../src/crypto/poly1305/internal.h            |    41 +
 .../src/crypto/poly1305/internal.h.grpc_back  |    41 +
 .../src/crypto/poly1305/poly1305.c            |   318 +
 .../src/crypto/poly1305/poly1305.c.grpc_back  |   318 +
 .../src/crypto/poly1305/poly1305_arm.c        |   305 +
 .../crypto/poly1305/poly1305_arm.c.grpc_back  |   305 +
 .../src/crypto/poly1305/poly1305_vec.c        |   856 +
 .../crypto/poly1305/poly1305_vec.c.grpc_back  |   856 +
 .../BoringSSL-GRPC/src/crypto/pool/internal.h |    45 +
 .../src/crypto/pool/internal.h.grpc_back      |    45 +
 .../BoringSSL-GRPC/src/crypto/pool/pool.c     |   220 +
 .../src/crypto/pool/pool.c.grpc_back          |   220 +
 .../src/crypto/rand_extra/deterministic.c     |    56 +
 .../rand_extra/deterministic.c.grpc_back      |    56 +
 .../src/crypto/rand_extra/forkunsafe.c        |    46 +
 .../crypto/rand_extra/forkunsafe.c.grpc_back  |    46 +
 .../src/crypto/rand_extra/fuchsia.c           |    30 +
 .../src/crypto/rand_extra/fuchsia.c.grpc_back |    30 +
 .../src/crypto/rand_extra/rand_extra.c        |    70 +
 .../crypto/rand_extra/rand_extra.c.grpc_back  |    70 +
 .../src/crypto/rand_extra/windows.c           |    53 +
 .../src/crypto/rand_extra/windows.c.grpc_back |    53 +
 .../Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c  |    98 +
 .../src/crypto/rc4/rc4.c.grpc_back            |    98 +
 .../BoringSSL-GRPC/src/crypto/refcount_c11.c  |    67 +
 .../src/crypto/refcount_c11.c.grpc_back       |    67 +
 .../BoringSSL-GRPC/src/crypto/refcount_lock.c |    53 +
 .../src/crypto/refcount_lock.c.grpc_back      |    53 +
 .../src/crypto/rsa_extra/rsa_asn1.c           |   325 +
 .../src/crypto/rsa_extra/rsa_asn1.c.grpc_back |   325 +
 .../src/crypto/rsa_extra/rsa_print.c          |    22 +
 .../crypto/rsa_extra/rsa_print.c.grpc_back    |    22 +
 .../src/crypto/siphash/siphash.c              |    82 +
 .../src/crypto/siphash/siphash.c.grpc_back    |    82 +
 .../BoringSSL-GRPC/src/crypto/stack/stack.c   |   431 +
 .../src/crypto/stack/stack.c.grpc_back        |   431 +
 .../Pods/BoringSSL-GRPC/src/crypto/thread.c   |   110 +
 .../src/crypto/thread.c.grpc_back             |   110 +
 .../BoringSSL-GRPC/src/crypto/thread_none.c   |    59 +
 .../src/crypto/thread_none.c.grpc_back        |    59 +
 .../src/crypto/thread_pthread.c               |   206 +
 .../src/crypto/thread_pthread.c.grpc_back     |   206 +
 .../BoringSSL-GRPC/src/crypto/thread_win.c    |   256 +
 .../src/crypto/thread_win.c.grpc_back         |   256 +
 .../BoringSSL-GRPC/src/crypto/x509/a_digest.c |    96 +
 .../src/crypto/x509/a_digest.c.grpc_back      |    96 +
 .../BoringSSL-GRPC/src/crypto/x509/a_sign.c   |   128 +
 .../src/crypto/x509/a_sign.c.grpc_back        |   128 +
 .../BoringSSL-GRPC/src/crypto/x509/a_strex.c  |   653 +
 .../src/crypto/x509/a_strex.c.grpc_back       |   653 +
 .../BoringSSL-GRPC/src/crypto/x509/a_verify.c |   114 +
 .../src/crypto/x509/a_verify.c.grpc_back      |   114 +
 .../src/crypto/x509/algorithm.c               |   153 +
 .../src/crypto/x509/algorithm.c.grpc_back     |   153 +
 .../BoringSSL-GRPC/src/crypto/x509/asn1_gen.c |   842 +
 .../src/crypto/x509/asn1_gen.c.grpc_back      |   842 +
 .../BoringSSL-GRPC/src/crypto/x509/by_dir.c   |   458 +
 .../src/crypto/x509/by_dir.c.grpc_back        |   458 +
 .../BoringSSL-GRPC/src/crypto/x509/by_file.c  |   275 +
 .../src/crypto/x509/by_file.c.grpc_back       |   275 +
 .../BoringSSL-GRPC/src/crypto/x509/charmap.h  |    15 +
 .../src/crypto/x509/charmap.h.grpc_back       |    15 +
 .../BoringSSL-GRPC/src/crypto/x509/i2d_pr.c   |    83 +
 .../src/crypto/x509/i2d_pr.c.grpc_back        |    83 +
 .../BoringSSL-GRPC/src/crypto/x509/internal.h |    66 +
 .../src/crypto/x509/internal.h.grpc_back      |    66 +
 .../BoringSSL-GRPC/src/crypto/x509/rsa_pss.c  |   385 +
 .../src/crypto/x509/rsa_pss.c.grpc_back       |   385 +
 .../BoringSSL-GRPC/src/crypto/x509/t_crl.c    |   125 +
 .../src/crypto/x509/t_crl.c.grpc_back         |   125 +
 .../BoringSSL-GRPC/src/crypto/x509/t_req.c    |   244 +
 .../src/crypto/x509/t_req.c.grpc_back         |   244 +
 .../BoringSSL-GRPC/src/crypto/x509/t_x509.c   |   544 +
 .../src/crypto/x509/t_x509.c.grpc_back        |   544 +
 .../BoringSSL-GRPC/src/crypto/x509/t_x509a.c  |   111 +
 .../src/crypto/x509/t_x509a.c.grpc_back       |   111 +
 .../BoringSSL-GRPC/src/crypto/x509/vpm_int.h  |    71 +
 .../src/crypto/x509/vpm_int.h.grpc_back       |    71 +
 .../BoringSSL-GRPC/src/crypto/x509/x509.c     |   157 +
 .../src/crypto/x509/x509.c.grpc_back          |   157 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_att.c |   381 +
 .../src/crypto/x509/x509_att.c.grpc_back      |   381 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_cmp.c |   476 +
 .../src/crypto/x509/x509_cmp.c.grpc_back      |   476 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_d2.c  |   106 +
 .../src/crypto/x509/x509_d2.c.grpc_back       |   106 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_def.c |   103 +
 .../src/crypto/x509/x509_def.c.grpc_back      |   103 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_ext.c |   206 +
 .../src/crypto/x509/x509_ext.c.grpc_back      |   206 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_lu.c  |   834 +
 .../src/crypto/x509/x509_lu.c.grpc_back       |   834 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_obj.c |   198 +
 .../src/crypto/x509/x509_obj.c.grpc_back      |   198 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_r2x.c |   116 +
 .../src/crypto/x509/x509_r2x.c.grpc_back      |   116 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_req.c |   341 +
 .../src/crypto/x509/x509_req.c.grpc_back      |   341 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_set.c |   169 +
 .../src/crypto/x509/x509_set.c.grpc_back      |   169 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_trs.c |   326 +
 .../src/crypto/x509/x509_trs.c.grpc_back      |   326 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_txt.c |   204 +
 .../src/crypto/x509/x509_txt.c.grpc_back      |   204 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_v3.c  |   278 +
 .../src/crypto/x509/x509_v3.c.grpc_back       |   278 +
 .../BoringSSL-GRPC/src/crypto/x509/x509_vfy.c |  2482 ++
 .../src/crypto/x509/x509_vfy.c.grpc_back      |  2482 ++
 .../BoringSSL-GRPC/src/crypto/x509/x509_vpm.c |   671 +
 .../src/crypto/x509/x509_vpm.c.grpc_back      |   671 +
 .../BoringSSL-GRPC/src/crypto/x509/x509cset.c |   210 +
 .../src/crypto/x509/x509cset.c.grpc_back      |   210 +
 .../BoringSSL-GRPC/src/crypto/x509/x509name.c |   388 +
 .../src/crypto/x509/x509name.c.grpc_back      |   388 +
 .../BoringSSL-GRPC/src/crypto/x509/x509rset.c |    81 +
 .../src/crypto/x509/x509rset.c.grpc_back      |    81 +
 .../BoringSSL-GRPC/src/crypto/x509/x509spki.c |   137 +
 .../src/crypto/x509/x509spki.c.grpc_back      |   137 +
 .../BoringSSL-GRPC/src/crypto/x509/x_algor.c  |   151 +
 .../src/crypto/x509/x_algor.c.grpc_back       |   151 +
 .../BoringSSL-GRPC/src/crypto/x509/x_all.c    |   399 +
 .../src/crypto/x509/x_all.c.grpc_back         |   399 +
 .../BoringSSL-GRPC/src/crypto/x509/x_attrib.c |   111 +
 .../src/crypto/x509/x_attrib.c.grpc_back      |   111 +
 .../BoringSSL-GRPC/src/crypto/x509/x_crl.c    |   541 +
 .../src/crypto/x509/x_crl.c.grpc_back         |   541 +
 .../BoringSSL-GRPC/src/crypto/x509/x_exten.c  |    75 +
 .../src/crypto/x509/x_exten.c.grpc_back       |    75 +
 .../BoringSSL-GRPC/src/crypto/x509/x_info.c   |    98 +
 .../src/crypto/x509/x_info.c.grpc_back        |    98 +
 .../BoringSSL-GRPC/src/crypto/x509/x_name.c   |   554 +
 .../src/crypto/x509/x_name.c.grpc_back        |   554 +
 .../BoringSSL-GRPC/src/crypto/x509/x_pkey.c   |   106 +
 .../src/crypto/x509/x_pkey.c.grpc_back        |   106 +
 .../BoringSSL-GRPC/src/crypto/x509/x_pubkey.c |   368 +
 .../src/crypto/x509/x_pubkey.c.grpc_back      |   368 +
 .../BoringSSL-GRPC/src/crypto/x509/x_req.c    |   109 +
 .../src/crypto/x509/x_req.c.grpc_back         |   109 +
 .../BoringSSL-GRPC/src/crypto/x509/x_sig.c    |    69 +
 .../src/crypto/x509/x_sig.c.grpc_back         |    69 +
 .../BoringSSL-GRPC/src/crypto/x509/x_spki.c   |    80 +
 .../src/crypto/x509/x_spki.c.grpc_back        |    80 +
 .../BoringSSL-GRPC/src/crypto/x509/x_val.c    |    69 +
 .../src/crypto/x509/x_val.c.grpc_back         |    69 +
 .../BoringSSL-GRPC/src/crypto/x509/x_x509.c   |   334 +
 .../src/crypto/x509/x_x509.c.grpc_back        |   334 +
 .../BoringSSL-GRPC/src/crypto/x509/x_x509a.c  |   198 +
 .../src/crypto/x509/x_x509a.c.grpc_back       |   198 +
 .../src/crypto/x509v3/ext_dat.h               |   141 +
 .../src/crypto/x509v3/ext_dat.h.grpc_back     |   141 +
 .../src/crypto/x509v3/internal.h              |    56 +
 .../src/crypto/x509v3/internal.h.grpc_back    |    56 +
 .../src/crypto/x509v3/pcy_cache.c             |   286 +
 .../src/crypto/x509v3/pcy_cache.c.grpc_back   |   286 +
 .../src/crypto/x509v3/pcy_data.c              |   130 +
 .../src/crypto/x509v3/pcy_data.c.grpc_back    |   130 +
 .../src/crypto/x509v3/pcy_int.h               |   217 +
 .../src/crypto/x509v3/pcy_int.h.grpc_back     |   217 +
 .../src/crypto/x509v3/pcy_lib.c               |   155 +
 .../src/crypto/x509v3/pcy_lib.c.grpc_back     |   155 +
 .../src/crypto/x509v3/pcy_map.c               |   130 +
 .../src/crypto/x509v3/pcy_map.c.grpc_back     |   130 +
 .../src/crypto/x509v3/pcy_node.c              |   189 +
 .../src/crypto/x509v3/pcy_node.c.grpc_back    |   189 +
 .../src/crypto/x509v3/pcy_tree.c              |   842 +
 .../src/crypto/x509v3/pcy_tree.c.grpc_back    |   842 +
 .../src/crypto/x509v3/v3_akey.c               |   207 +
 .../src/crypto/x509v3/v3_akey.c.grpc_back     |   207 +
 .../src/crypto/x509v3/v3_akeya.c              |    72 +
 .../src/crypto/x509v3/v3_akeya.c.grpc_back    |    72 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c |   629 +
 .../src/crypto/x509v3/v3_alt.c.grpc_back      |   629 +
 .../src/crypto/x509v3/v3_bcons.c              |   133 +
 .../src/crypto/x509v3/v3_bcons.c.grpc_back    |   133 +
 .../src/crypto/x509v3/v3_bitst.c              |   141 +
 .../src/crypto/x509v3/v3_bitst.c.grpc_back    |   141 +
 .../src/crypto/x509v3/v3_conf.c               |   463 +
 .../src/crypto/x509v3/v3_conf.c.grpc_back     |   463 +
 .../src/crypto/x509v3/v3_cpols.c              |   503 +
 .../src/crypto/x509v3/v3_cpols.c.grpc_back    |   503 +
 .../src/crypto/x509v3/v3_crld.c               |   561 +
 .../src/crypto/x509v3/v3_crld.c.grpc_back     |   561 +
 .../src/crypto/x509v3/v3_enum.c               |   100 +
 .../src/crypto/x509v3/v3_enum.c.grpc_back     |   100 +
 .../src/crypto/x509v3/v3_extku.c              |   148 +
 .../src/crypto/x509v3/v3_extku.c.grpc_back    |   148 +
 .../src/crypto/x509v3/v3_genn.c               |   246 +
 .../src/crypto/x509v3/v3_genn.c.grpc_back     |   246 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c |   122 +
 .../src/crypto/x509v3/v3_ia5.c.grpc_back      |   122 +
 .../src/crypto/x509v3/v3_info.c               |   218 +
 .../src/crypto/x509v3/v3_info.c.grpc_back     |   218 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_int.c |    91 +
 .../src/crypto/x509v3/v3_int.c.grpc_back      |    91 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c |   371 +
 .../src/crypto/x509v3/v3_lib.c.grpc_back      |   371 +
 .../src/crypto/x509v3/v3_ncons.c              |   501 +
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 .../src/crypto/x509v3/v3_ocsp.c               |    68 +
 .../src/crypto/x509v3/v3_ocsp.c.grpc_back     |    68 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c |   288 +
 .../src/crypto/x509v3/v3_pci.c.grpc_back      |   288 +
 .../src/crypto/x509v3/v3_pcia.c               |    57 +
 .../src/crypto/x509v3/v3_pcia.c.grpc_back     |    57 +
 .../src/crypto/x509v3/v3_pcons.c              |   139 +
 .../src/crypto/x509v3/v3_pcons.c.grpc_back    |   139 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c |   110 +
 .../src/crypto/x509v3/v3_pku.c.grpc_back      |   110 +
 .../src/crypto/x509v3/v3_pmaps.c              |   154 +
 .../src/crypto/x509v3/v3_pmaps.c.grpc_back    |   154 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c |   229 +
 .../src/crypto/x509v3/v3_prn.c.grpc_back      |   229 +
 .../src/crypto/x509v3/v3_purp.c               |   843 +
 .../src/crypto/x509v3/v3_purp.c.grpc_back     |   843 +
 .../src/crypto/x509v3/v3_skey.c               |   155 +
 .../src/crypto/x509v3/v3_skey.c.grpc_back     |   155 +
 .../src/crypto/x509v3/v3_sxnet.c              |   274 +
 .../src/crypto/x509v3/v3_sxnet.c.grpc_back    |   274 +
 .../BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c |  1395 +
 .../src/crypto/x509v3/v3_utl.c.grpc_back      |  1395 +
 .../src/include/openssl/BoringSSL.modulemap   |     6 +
 .../BoringSSL-GRPC/src/include/openssl/aead.h |   459 +
 .../src/include/openssl/aead.h.back           |   459 +
 .../src/include/openssl/aead.h.grpc_back      |   459 +
 .../BoringSSL-GRPC/src/include/openssl/aes.h  |   195 +
 .../src/include/openssl/aes.h.back            |   195 +
 .../src/include/openssl/aes.h.grpc_back       |   195 +
 .../src/include/openssl/arm_arch.h            |   121 +
 .../src/include/openssl/arm_arch.h.back       |   121 +
 .../src/include/openssl/arm_arch.h.grpc_back  |   121 +
 .../BoringSSL-GRPC/src/include/openssl/asn1.h |   911 +
 .../src/include/openssl/asn1.h.back           |   911 +
 .../src/include/openssl/asn1.h.grpc_back      |   911 +
 .../src/include/openssl/asn1_mac.h            |    18 +
 .../src/include/openssl/asn1_mac.h.back       |    18 +
 .../src/include/openssl/asn1_mac.h.grpc_back  |    18 +
 .../src/include/openssl/asn1t.h               |   892 +
 .../src/include/openssl/asn1t.h.back          |   892 +
 .../src/include/openssl/asn1t.h.grpc_back     |   892 +
 .../BoringSSL-GRPC/src/include/openssl/base.h |   571 +
 .../src/include/openssl/base.h.back           |   571 +
 .../src/include/openssl/base.h.grpc_back      |   571 +
 .../src/include/openssl/base64.h              |   190 +
 .../src/include/openssl/base64.h.back         |   190 +
 .../src/include/openssl/base64.h.grpc_back    |   190 +
 .../BoringSSL-GRPC/src/include/openssl/bio.h  |   933 +
 .../src/include/openssl/bio.h.back            |   933 +
 .../src/include/openssl/bio.h.grpc_back       |   933 +
 .../src/include/openssl/blowfish.h            |    93 +
 .../src/include/openssl/blowfish.h.back       |    93 +
 .../src/include/openssl/blowfish.h.grpc_back  |    93 +
 .../BoringSSL-GRPC/src/include/openssl/bn.h   |  1056 +
 .../src/include/openssl/bn.h.back             |  1056 +
 .../src/include/openssl/bn.h.grpc_back        |  1056 +
 .../BoringSSL-GRPC/src/include/openssl/buf.h  |   137 +
 .../src/include/openssl/buf.h.back            |   137 +
 .../src/include/openssl/buf.h.grpc_back       |   137 +
 .../src/include/openssl/buffer.h              |    18 +
 .../src/include/openssl/buffer.h.back         |    18 +
 .../src/include/openssl/buffer.h.grpc_back    |    18 +
 .../src/include/openssl/bytestring.h          |   561 +
 .../src/include/openssl/bytestring.h.back     |   561 +
 .../include/openssl/bytestring.h.grpc_back    |   561 +
 .../BoringSSL-GRPC/src/include/openssl/cast.h |    96 +
 .../src/include/openssl/cast.h.back           |    96 +
 .../src/include/openssl/cast.h.grpc_back      |    96 +
 .../src/include/openssl/chacha.h              |    41 +
 .../src/include/openssl/chacha.h.back         |    41 +
 .../src/include/openssl/chacha.h.grpc_back    |    41 +
 .../src/include/openssl/cipher.h              |   638 +
 .../src/include/openssl/cipher.h.back         |   638 +
 .../src/include/openssl/cipher.h.grpc_back    |   638 +
 .../BoringSSL-GRPC/src/include/openssl/cmac.h |    91 +
 .../src/include/openssl/cmac.h.back           |    91 +
 .../src/include/openssl/cmac.h.grpc_back      |    91 +
 .../BoringSSL-GRPC/src/include/openssl/conf.h |   180 +
 .../src/include/openssl/conf.h.back           |   180 +
 .../src/include/openssl/conf.h.grpc_back      |   180 +
 .../BoringSSL-GRPC/src/include/openssl/cpu.h  |   212 +
 .../src/include/openssl/cpu.h.back            |   212 +
 .../src/include/openssl/cpu.h.grpc_back       |   212 +
 .../src/include/openssl/crypto.h              |   144 +
 .../src/include/openssl/crypto.h.back         |   144 +
 .../src/include/openssl/crypto.h.grpc_back    |   144 +
 .../src/include/openssl/curve25519.h          |   201 +
 .../src/include/openssl/curve25519.h.back     |   201 +
 .../include/openssl/curve25519.h.grpc_back    |   201 +
 .../BoringSSL-GRPC/src/include/openssl/des.h  |   177 +
 .../src/include/openssl/des.h.back            |   177 +
 .../src/include/openssl/des.h.grpc_back       |   177 +
 .../BoringSSL-GRPC/src/include/openssl/dh.h   |   299 +
 .../src/include/openssl/dh.h.back             |   299 +
 .../src/include/openssl/dh.h.grpc_back        |   299 +
 .../src/include/openssl/digest.h              |   330 +
 .../src/include/openssl/digest.h.back         |   330 +
 .../src/include/openssl/digest.h.grpc_back    |   330 +
 .../BoringSSL-GRPC/src/include/openssl/dsa.h  |   441 +
 .../src/include/openssl/dsa.h.back            |   441 +
 .../src/include/openssl/dsa.h.grpc_back       |   441 +
 .../src/include/openssl/dtls1.h               |    16 +
 .../src/include/openssl/dtls1.h.back          |    16 +
 .../src/include/openssl/dtls1.h.grpc_back     |    16 +
 .../src/include/openssl/e_os2.h               |    18 +
 .../src/include/openssl/e_os2.h.back          |    18 +
 .../src/include/openssl/e_os2.h.grpc_back     |    18 +
 .../BoringSSL-GRPC/src/include/openssl/ec.h   |   424 +
 .../src/include/openssl/ec.h.back             |   424 +
 .../src/include/openssl/ec.h.grpc_back        |   424 +
 .../src/include/openssl/ec_key.h              |   372 +
 .../src/include/openssl/ec_key.h.back         |   372 +
 .../src/include/openssl/ec_key.h.grpc_back    |   372 +
 .../BoringSSL-GRPC/src/include/openssl/ecdh.h |   118 +
 .../src/include/openssl/ecdh.h.back           |   118 +
 .../src/include/openssl/ecdh.h.grpc_back      |   118 +
 .../src/include/openssl/ecdsa.h               |   199 +
 .../src/include/openssl/ecdsa.h.back          |   199 +
 .../src/include/openssl/ecdsa.h.grpc_back     |   199 +
 .../src/include/openssl/engine.h              |   109 +
 .../src/include/openssl/engine.h.back         |   109 +
 .../src/include/openssl/engine.h.grpc_back    |   109 +
 .../BoringSSL-GRPC/src/include/openssl/err.h  |   463 +
 .../src/include/openssl/err.h.back            |   463 +
 .../src/include/openssl/err.h.grpc_back       |   463 +
 .../BoringSSL-GRPC/src/include/openssl/evp.h  |  1048 +
 .../src/include/openssl/evp.h.back            |  1048 +
 .../src/include/openssl/evp.h.grpc_back       |  1048 +
 .../src/include/openssl/ex_data.h             |   203 +
 .../src/include/openssl/ex_data.h.back        |   203 +
 .../src/include/openssl/ex_data.h.grpc_back   |   203 +
 .../BoringSSL-GRPC/src/include/openssl/hkdf.h |    64 +
 .../src/include/openssl/hkdf.h.back           |    64 +
 .../src/include/openssl/hkdf.h.grpc_back      |    64 +
 .../BoringSSL-GRPC/src/include/openssl/hmac.h |   186 +
 .../src/include/openssl/hmac.h.back           |   186 +
 .../src/include/openssl/hmac.h.grpc_back      |   186 +
 .../BoringSSL-GRPC/src/include/openssl/hrss.h |   100 +
 .../src/include/openssl/hrss.h.back           |   100 +
 .../src/include/openssl/hrss.h.grpc_back      |   100 +
 .../src/include/openssl/is_boringssl.h        |    16 +
 .../src/include/openssl/is_boringssl.h.back   |    16 +
 .../include/openssl/is_boringssl.h.grpc_back  |    16 +
 .../src/include/openssl/lhash.h               |   282 +
 .../src/include/openssl/lhash.h.back          |   282 +
 .../src/include/openssl/lhash.h.grpc_back     |   282 +
 .../BoringSSL-GRPC/src/include/openssl/md4.h  |   108 +
 .../src/include/openssl/md4.h.back            |   108 +
 .../src/include/openssl/md4.h.grpc_back       |   108 +
 .../BoringSSL-GRPC/src/include/openssl/md5.h  |   109 +
 .../src/include/openssl/md5.h.back            |   109 +
 .../src/include/openssl/md5.h.grpc_back       |   109 +
 .../BoringSSL-GRPC/src/include/openssl/mem.h  |   175 +
 .../src/include/openssl/mem.h.back            |   175 +
 .../src/include/openssl/mem.h.grpc_back       |   175 +
 .../BoringSSL-GRPC/src/include/openssl/nid.h  |  4254 +++
 .../src/include/openssl/nid.h.back            |  4254 +++
 .../src/include/openssl/nid.h.grpc_back       |  4254 +++
 .../BoringSSL-GRPC/src/include/openssl/obj.h  |   236 +
 .../src/include/openssl/obj.h.back            |   236 +
 .../src/include/openssl/obj.h.grpc_back       |   236 +
 .../src/include/openssl/obj_mac.h             |    18 +
 .../src/include/openssl/obj_mac.h.back        |    18 +
 .../src/include/openssl/obj_mac.h.grpc_back   |    18 +
 .../src/include/openssl/objects.h             |    18 +
 .../src/include/openssl/objects.h.back        |    18 +
 .../src/include/openssl/objects.h.grpc_back   |    18 +
 .../src/include/openssl/opensslconf.h         |    67 +
 .../src/include/openssl/opensslconf.h.back    |    67 +
 .../include/openssl/opensslconf.h.grpc_back   |    67 +
 .../src/include/openssl/opensslv.h            |    18 +
 .../src/include/openssl/opensslv.h.back       |    18 +
 .../src/include/openssl/opensslv.h.grpc_back  |    18 +
 .../src/include/openssl/ossl_typ.h            |    18 +
 .../src/include/openssl/ossl_typ.h.back       |    18 +
 .../src/include/openssl/ossl_typ.h.grpc_back  |    18 +
 .../BoringSSL-GRPC/src/include/openssl/pem.h  |   435 +
 .../src/include/openssl/pem.h.back            |   435 +
 .../src/include/openssl/pem.h.grpc_back       |   435 +
 .../src/include/openssl/pkcs12.h              |    18 +
 .../src/include/openssl/pkcs12.h.back         |    18 +
 .../src/include/openssl/pkcs12.h.grpc_back    |    18 +
 .../src/include/openssl/pkcs7.h               |   215 +
 .../src/include/openssl/pkcs7.h.back          |   215 +
 .../src/include/openssl/pkcs7.h.grpc_back     |   215 +
 .../src/include/openssl/pkcs8.h               |   269 +
 .../src/include/openssl/pkcs8.h.back          |   269 +
 .../src/include/openssl/pkcs8.h.grpc_back     |   269 +
 .../src/include/openssl/poly1305.h            |    49 +
 .../src/include/openssl/poly1305.h.back       |    49 +
 .../src/include/openssl/poly1305.h.grpc_back  |    49 +
 .../BoringSSL-GRPC/src/include/openssl/pool.h |   102 +
 .../src/include/openssl/pool.h.back           |   102 +
 .../src/include/openssl/pool.h.grpc_back      |   102 +
 .../BoringSSL-GRPC/src/include/openssl/rand.h |   125 +
 .../src/include/openssl/rand.h.back           |   125 +
 .../src/include/openssl/rand.h.grpc_back      |   125 +
 .../BoringSSL-GRPC/src/include/openssl/rc4.h  |    96 +
 .../src/include/openssl/rc4.h.back            |    96 +
 .../src/include/openssl/rc4.h.grpc_back       |    96 +
 .../src/include/openssl/ripemd.h              |   108 +
 .../src/include/openssl/ripemd.h.back         |   108 +
 .../src/include/openssl/ripemd.h.grpc_back    |   108 +
 .../BoringSSL-GRPC/src/include/openssl/rsa.h  |   787 +
 .../src/include/openssl/rsa.h.back            |   787 +
 .../src/include/openssl/rsa.h.grpc_back       |   787 +
 .../src/include/openssl/safestack.h           |    16 +
 .../src/include/openssl/safestack.h.back      |    16 +
 .../src/include/openssl/safestack.h.grpc_back |    16 +
 .../BoringSSL-GRPC/src/include/openssl/sha.h  |   268 +
 .../src/include/openssl/sha.h.back            |   268 +
 .../src/include/openssl/sha.h.grpc_back       |   268 +
 .../src/include/openssl/siphash.h             |    37 +
 .../src/include/openssl/siphash.h.back        |    37 +
 .../src/include/openssl/siphash.h.grpc_back   |    37 +
 .../BoringSSL-GRPC/src/include/openssl/span.h |   199 +
 .../src/include/openssl/span.h.back           |   199 +
 .../src/include/openssl/span.h.grpc_back      |   199 +
 .../BoringSSL-GRPC/src/include/openssl/srtp.h |    18 +
 .../src/include/openssl/srtp.h.back           |    18 +
 .../src/include/openssl/srtp.h.grpc_back      |    18 +
 .../BoringSSL-GRPC/src/include/openssl/ssl.h  |  5035 +++
 .../src/include/openssl/ssl.h.back            |  5039 +++
 .../src/include/openssl/ssl.h.grpc_back       |  5035 +++
 .../BoringSSL-GRPC/src/include/openssl/ssl3.h |   333 +
 .../src/include/openssl/ssl3.h.back           |   333 +
 .../src/include/openssl/ssl3.h.grpc_back      |   333 +
 .../src/include/openssl/stack.h               |   542 +
 .../src/include/openssl/stack.h.back          |   542 +
 .../src/include/openssl/stack.h.grpc_back     |   542 +
 .../src/include/openssl/thread.h              |   191 +
 .../src/include/openssl/thread.h.back         |   191 +
 .../src/include/openssl/thread.h.grpc_back    |   191 +
 .../BoringSSL-GRPC/src/include/openssl/tls1.h |   631 +
 .../src/include/openssl/tls1.h.back           |   631 +
 .../src/include/openssl/tls1.h.grpc_back      |   631 +
 .../src/include/openssl/type_check.h          |    90 +
 .../src/include/openssl/type_check.h.back     |    90 +
 .../include/openssl/type_check.h.grpc_back    |    90 +
 .../src/include/openssl/umbrella.h            |    38 +
 .../src/include/openssl/umbrella.h.back       |    38 +
 .../src/include/openssl/umbrella.h.grpc_back  |    38 +
 .../BoringSSL-GRPC/src/include/openssl/x509.h |  1205 +
 .../src/include/openssl/x509.h.back           |  1205 +
 .../src/include/openssl/x509.h.grpc_back      |  1205 +
 .../src/include/openssl/x509_vfy.h            |   680 +
 .../src/include/openssl/x509_vfy.h.back       |   680 +
 .../src/include/openssl/x509_vfy.h.grpc_back  |   680 +
 .../src/include/openssl/x509v3.h              |   831 +
 .../src/include/openssl/x509v3.h.back         |   831 +
 .../src/include/openssl/x509v3.h.grpc_back    |   831 +
 .../Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc    |   179 +
 .../src/ssl/bio_ssl.cc.grpc_back              |   179 +
 .../Pods/BoringSSL-GRPC/src/ssl/d1_both.cc    |   841 +
 .../src/ssl/d1_both.cc.grpc_back              |   841 +
 .../Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc     |   268 +
 .../src/ssl/d1_lib.cc.grpc_back               |   268 +
 .../Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc     |   273 +
 .../src/ssl/d1_pkt.cc.grpc_back               |   273 +
 .../Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc    |   232 +
 .../src/ssl/d1_srtp.cc.grpc_back              |   232 +
 .../BoringSSL-GRPC/src/ssl/dtls_method.cc     |   191 +
 .../src/ssl/dtls_method.cc.grpc_back          |   191 +
 .../BoringSSL-GRPC/src/ssl/dtls_record.cc     |   353 +
 .../src/ssl/dtls_record.cc.grpc_back          |   353 +
 .../Pods/BoringSSL-GRPC/src/ssl/handoff.cc    |   586 +
 .../src/ssl/handoff.cc.grpc_back              |   586 +
 .../Pods/BoringSSL-GRPC/src/ssl/handshake.cc  |   692 +
 .../src/ssl/handshake.cc.grpc_back            |   692 +
 .../src/ssl/handshake_client.cc               |  1882 ++
 .../src/ssl/handshake_client.cc.grpc_back     |  1882 ++
 .../src/ssl/handshake_server.cc               |  1797 ++
 .../src/ssl/handshake_server.cc.grpc_back     |  1797 ++
 .../Pods/BoringSSL-GRPC/src/ssl/internal.h    |  3555 +++
 .../src/ssl/internal.h.grpc_back              |  3555 +++
 .../Pods/BoringSSL-GRPC/src/ssl/s3_both.cc    |   724 +
 .../src/ssl/s3_both.cc.grpc_back              |   724 +
 .../Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc     |   221 +
 .../src/ssl/s3_lib.cc.grpc_back               |   221 +
 .../Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc     |   458 +
 .../src/ssl/s3_pkt.cc.grpc_back               |   458 +
 .../BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc    |   432 +
 .../src/ssl/ssl_aead_ctx.cc.grpc_back         |   432 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc   |   827 +
 .../src/ssl/ssl_asn1.cc.grpc_back             |   827 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc |   306 +
 .../src/ssl/ssl_buffer.cc.grpc_back           |   306 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc   |  1015 +
 .../src/ssl/ssl_cert.cc.grpc_back             |  1015 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc |  1718 ++
 .../src/ssl/ssl_cipher.cc.grpc_back           |  1718 ++
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc   |   585 +
 .../src/ssl/ssl_file.cc.grpc_back             |   585 +
 .../BoringSSL-GRPC/src/ssl/ssl_key_share.cc   |   397 +
 .../src/ssl/ssl_key_share.cc.grpc_back        |   397 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc    |  3010 ++
 .../src/ssl/ssl_lib.cc.grpc_back              |  3010 ++
 .../BoringSSL-GRPC/src/ssl/ssl_privkey.cc     |   824 +
 .../src/ssl/ssl_privkey.cc.grpc_back          |   824 +
 .../BoringSSL-GRPC/src/ssl/ssl_session.cc     |  1274 +
 .../src/ssl/ssl_session.cc.grpc_back          |  1274 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc   |   224 +
 .../src/ssl/ssl_stat.cc.grpc_back             |   224 +
 .../BoringSSL-GRPC/src/ssl/ssl_transcript.cc  |   277 +
 .../src/ssl/ssl_transcript.cc.grpc_back       |   277 +
 .../BoringSSL-GRPC/src/ssl/ssl_versions.cc    |   394 +
 .../src/ssl/ssl_versions.cc.grpc_back         |   394 +
 .../Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc   |  1358 +
 .../src/ssl/ssl_x509.cc.grpc_back             |  1358 +
 .../Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc     |   361 +
 .../src/ssl/t1_enc.cc.grpc_back               |   361 +
 .../Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc     |  3876 +++
 .../src/ssl/t1_lib.cc.grpc_back               |  3876 +++
 .../ssl/test/runner/curve25519/const_amd64.h  |     8 +
 .../runner/curve25519/const_amd64.h.grpc_back |     8 +
 .../Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc |   689 +
 .../src/ssl/tls13_both.cc.grpc_back           |   689 +
 .../BoringSSL-GRPC/src/ssl/tls13_client.cc    |   946 +
 .../src/ssl/tls13_client.cc.grpc_back         |   946 +
 .../Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc  |   565 +
 .../src/ssl/tls13_enc.cc.grpc_back            |   565 +
 .../BoringSSL-GRPC/src/ssl/tls13_server.cc    |  1066 +
 .../src/ssl/tls13_server.cc.grpc_back         |  1066 +
 .../Pods/BoringSSL-GRPC/src/ssl/tls_method.cc |   279 +
 .../src/ssl/tls_method.cc.grpc_back           |   279 +
 .../Pods/BoringSSL-GRPC/src/ssl/tls_record.cc |   703 +
 .../src/ssl/tls_record.cc.grpc_back           |   703 +
 .../src/third_party/fiat/curve25519.c         |  2167 ++
 .../third_party/fiat/curve25519.c.grpc_back   |  2167 ++
 .../src/third_party/fiat/curve25519_32.h      |   911 +
 .../fiat/curve25519_32.h.grpc_back            |   911 +
 .../src/third_party/fiat/curve25519_64.h      |   559 +
 .../fiat/curve25519_64.h.grpc_back            |   559 +
 .../src/third_party/fiat/curve25519_tables.h  |  7880 +++++
 .../fiat/curve25519_tables.h.grpc_back        |  7880 +++++
 .../src/third_party/fiat/internal.h           |   154 +
 .../src/third_party/fiat/internal.h.grpc_back |   154 +
 .../src/third_party/fiat/p256.c               |  1063 +
 .../src/third_party/fiat/p256.c.grpc_back     |  1063 +
 .../src/third_party/fiat/p256_32.h            |  3226 ++
 .../src/third_party/fiat/p256_32.h.grpc_back  |  3226 ++
 .../src/third_party/fiat/p256_64.h            |  1217 +
 .../src/third_party/fiat/p256_64.h.grpc_back  |  1217 +
 .../Pods/Firebase/CoreOnly/Sources/Firebase.h |    81 +
 .../CoreOnly/Sources/module.modulemap         |     4 +
 ChattingApp 000/Pods/Firebase/LICENSE         |   202 +
 ChattingApp 000/Pods/Firebase/README.md       |   333 +
 .../FirebaseAuth/FirebaseAuth/CHANGELOG.md    |   311 +
 .../Pods/FirebaseAuth/FirebaseAuth/README.md  |    17 +
 .../Sources/Auth/FIRActionCodeSettings.m      |    45 +
 .../FirebaseAuth/Sources/Auth/FIRAuth.m       |  2271 ++
 .../Sources/Auth/FIRAuthDataResult.m          |    83 +
 .../Sources/Auth/FIRAuthDataResult_Internal.h |    46 +
 .../Sources/Auth/FIRAuthDispatcher.h          |    63 +
 .../Sources/Auth/FIRAuthDispatcher.m          |    46 +
 .../Sources/Auth/FIRAuthGlobalWorkQueue.h     |    31 +
 .../Sources/Auth/FIRAuthGlobalWorkQueue.m     |    30 +
 .../Sources/Auth/FIRAuthOperationType.h       |    47 +
 .../Sources/Auth/FIRAuthSerialTaskQueue.h     |    50 +
 .../Sources/Auth/FIRAuthSerialTaskQueue.m     |    56 +
 .../Sources/Auth/FIRAuthSettings.m            |    40 +
 .../Sources/Auth/FIRAuthTokenResult.m         |   166 +
 .../Auth/FIRAuthTokenResult_Internal.h        |    36 +
 .../Sources/Auth/FIRAuth_Internal.h           |   152 +
 .../AuthProvider/Email/FIREmailAuthProvider.m |    41 +
 .../Email/FIREmailPasswordAuthCredential.h    |    61 +
 .../Email/FIREmailPasswordAuthCredential.m    |    92 +
 .../Sources/AuthProvider/FIRAuthCredential.m  |    46 +
 .../AuthProvider/FIRAuthCredential_Internal.h |    41 +
 .../Sources/AuthProvider/FIRAuthProvider.m    |    66 +
 .../Facebook/FIRFacebookAuthCredential.h      |    36 +
 .../Facebook/FIRFacebookAuthCredential.m      |    72 +
 .../Facebook/FIRFacebookAuthProvider.m        |    40 +
 .../GameCenter/FIRGameCenterAuthCredential.h  |    80 +
 .../GameCenter/FIRGameCenterAuthCredential.m  |    92 +
 .../GameCenter/FIRGameCenterAuthProvider.m    |    92 +
 .../GitHub/FIRGitHubAuthCredential.h          |    41 +
 .../GitHub/FIRGitHubAuthCredential.m          |    70 +
 .../GitHub/FIRGitHubAuthProvider.m            |    40 +
 .../Google/FIRGoogleAuthCredential.h          |    38 +
 .../Google/FIRGoogleAuthCredential.m          |    77 +
 .../Google/FIRGoogleAuthProvider.m            |    41 +
 .../AuthProvider/OAuth/FIROAuthCredential.m   |   130 +
 .../OAuth/FIROAuthCredential_Internal.h       |    78 +
 .../AuthProvider/OAuth/FIROAuthProvider.m     |   445 +
 .../Phone/FIRPhoneAuthCredential.m            |   107 +
 .../Phone/FIRPhoneAuthCredential_Internal.h   |    73 +
 .../AuthProvider/Phone/FIRPhoneAuthProvider.m |   751 +
 .../Twitter/FIRTwitterAuthCredential.h        |    48 +
 .../Twitter/FIRTwitterAuthCredential.m        |    74 +
 .../Twitter/FIRTwitterAuthProvider.m          |    40 +
 .../Backend/FIRAuthBackend+MultiFactor.h      |   125 +
 .../Backend/FIRAuthBackend+MultiFactor.m      |    96 +
 .../Sources/Backend/FIRAuthBackend.h          |   620 +
 .../Sources/Backend/FIRAuthBackend.m          |  1433 +
 .../Sources/Backend/FIRAuthRPCRequest.h       |    57 +
 .../Sources/Backend/FIRAuthRPCResponse.h      |    48 +
 .../Backend/FIRAuthRequestConfiguration.h     |    57 +
 .../Backend/FIRAuthRequestConfiguration.m     |    35 +
 .../Backend/FIRIdentityToolkitRequest.h       |    76 +
 .../Backend/FIRIdentityToolkitRequest.m       |   140 +
 .../Backend/RPC/FIRCreateAuthURIRequest.h     |    88 +
 .../Backend/RPC/FIRCreateAuthURIRequest.m     |   105 +
 .../Backend/RPC/FIRCreateAuthURIResponse.h    |    61 +
 .../Backend/RPC/FIRCreateAuthURIResponse.m    |    35 +
 .../Backend/RPC/FIRDeleteAccountRequest.h     |    50 +
 .../Backend/RPC/FIRDeleteAccountRequest.m     |    69 +
 .../Backend/RPC/FIRDeleteAccountResponse.h    |    30 +
 .../Backend/RPC/FIRDeleteAccountResponse.m    |    29 +
 .../Backend/RPC/FIREmailLinkSignInRequest.h   |    66 +
 .../Backend/RPC/FIREmailLinkSignInRequest.m   |    82 +
 .../Backend/RPC/FIREmailLinkSignInResponse.h  |    54 +
 .../Backend/RPC/FIREmailLinkSignInResponse.m  |    37 +
 .../Backend/RPC/FIRGetAccountInfoRequest.h    |    53 +
 .../Backend/RPC/FIRGetAccountInfoRequest.m    |    49 +
 .../Backend/RPC/FIRGetAccountInfoResponse.h   |   158 +
 .../Backend/RPC/FIRGetAccountInfoResponse.m   |   117 +
 .../RPC/FIRGetOOBConfirmationCodeRequest.h    |   178 +
 .../RPC/FIRGetOOBConfirmationCodeRequest.m    |   296 +
 .../RPC/FIRGetOOBConfirmationCodeResponse.h   |    35 +
 .../RPC/FIRGetOOBConfirmationCodeResponse.m   |    35 +
 .../Backend/RPC/FIRGetProjectConfigRequest.h  |    40 +
 .../Backend/RPC/FIRGetProjectConfigRequest.m  |    40 +
 .../Backend/RPC/FIRGetProjectConfigResponse.h |    40 +
 .../Backend/RPC/FIRGetProjectConfigResponse.m |    40 +
 .../Backend/RPC/FIRResetPasswordRequest.h     |    55 +
 .../Backend/RPC/FIRResetPasswordRequest.m     |    68 +
 .../Backend/RPC/FIRResetPasswordResponse.h    |    52 +
 .../Backend/RPC/FIRResetPasswordResponse.m    |    32 +
 .../Backend/RPC/FIRSecureTokenRequest.h       |   113 +
 .../Backend/RPC/FIRSecureTokenRequest.m       |   177 +
 .../Backend/RPC/FIRSecureTokenResponse.h      |    50 +
 .../Backend/RPC/FIRSecureTokenResponse.m      |    73 +
 .../RPC/FIRSendVerificationCodeRequest.h      |    64 +
 .../RPC/FIRSendVerificationCodeRequest.m      |    92 +
 .../RPC/FIRSendVerificationCodeResponse.h     |    32 +
 .../RPC/FIRSendVerificationCodeResponse.m     |    35 +
 .../Backend/RPC/FIRSetAccountInfoRequest.h    |   151 +
 .../Backend/RPC/FIRSetAccountInfoRequest.m    |   187 +
 .../Backend/RPC/FIRSetAccountInfoResponse.h   |    98 +
 .../Backend/RPC/FIRSetAccountInfoResponse.m   |    64 +
 .../RPC/FIRSignInWithGameCenterRequest.h      |    91 +
 .../RPC/FIRSignInWithGameCenterRequest.m      |    80 +
 .../RPC/FIRSignInWithGameCenterResponse.h     |    64 +
 .../RPC/FIRSignInWithGameCenterResponse.m     |    40 +
 .../Backend/RPC/FIRSignUpNewUserRequest.h     |    72 +
 .../Backend/RPC/FIRSignUpNewUserRequest.m     |    98 +
 .../Backend/RPC/FIRSignUpNewUserResponse.h    |    44 +
 .../Backend/RPC/FIRSignUpNewUserResponse.m    |    35 +
 .../Backend/RPC/FIRVerifyAssertionRequest.h   |   118 +
 .../Backend/RPC/FIRVerifyAssertionRequest.m   |   185 +
 .../Backend/RPC/FIRVerifyAssertionResponse.h  |   214 +
 .../Backend/RPC/FIRVerifyAssertionResponse.m  |   100 +
 .../Backend/RPC/FIRVerifyClientRequest.h      |    55 +
 .../Backend/RPC/FIRVerifyClientRequest.m      |    62 +
 .../Backend/RPC/FIRVerifyClientResponse.h     |    38 +
 .../Backend/RPC/FIRVerifyClientResponse.m     |    34 +
 .../Backend/RPC/FIRVerifyCustomTokenRequest.h |    58 +
 .../Backend/RPC/FIRVerifyCustomTokenRequest.m |    67 +
 .../RPC/FIRVerifyCustomTokenResponse.h        |    52 +
 .../RPC/FIRVerifyCustomTokenResponse.m        |    36 +
 .../Backend/RPC/FIRVerifyPasswordRequest.h    |    81 +
 .../Backend/RPC/FIRVerifyPasswordRequest.m    |   103 +
 .../Backend/RPC/FIRVerifyPasswordResponse.h   |    75 +
 .../Backend/RPC/FIRVerifyPasswordResponse.m   |    52 +
 .../Backend/RPC/FIRVerifyPhoneNumberRequest.h |    90 +
 .../Backend/RPC/FIRVerifyPhoneNumberRequest.m |   141 +
 .../RPC/FIRVerifyPhoneNumberResponse.h        |    64 +
 .../RPC/FIRVerifyPhoneNumberResponse.m        |    43 +
 .../Enroll/FIRFinalizeMFAEnrollmentRequest.h  |    39 +
 .../Enroll/FIRFinalizeMFAEnrollmentRequest.m  |    63 +
 .../Enroll/FIRFinalizeMFAEnrollmentResponse.h |    30 +
 .../Enroll/FIRFinalizeMFAEnrollmentResponse.m |    30 +
 .../Enroll/FIRStartMFAEnrollmentRequest.h     |    35 +
 .../Enroll/FIRStartMFAEnrollmentRequest.m     |    60 +
 .../Enroll/FIRStartMFAEnrollmentResponse.h    |    29 +
 .../Enroll/FIRStartMFAEnrollmentResponse.m    |    34 +
 .../SignIn/FIRFinalizeMFASignInRequest.h      |    37 +
 .../SignIn/FIRFinalizeMFASignInRequest.m      |    59 +
 .../SignIn/FIRFinalizeMFASignInResponse.h     |    30 +
 .../SignIn/FIRFinalizeMFASignInResponse.m     |    28 +
 .../SignIn/FIRStartMFASignInRequest.h         |    39 +
 .../SignIn/FIRStartMFASignInRequest.m         |    64 +
 .../SignIn/FIRStartMFASignInResponse.h        |    28 +
 .../SignIn/FIRStartMFASignInResponse.m        |    32 +
 .../Unenroll/FIRWithdrawMFARequest.h          |    34 +
 .../Unenroll/FIRWithdrawMFARequest.m          |    60 +
 .../Unenroll/FIRWithdrawMFAResponse.h         |    29 +
 .../Unenroll/FIRWithdrawMFAResponse.m         |    32 +
 .../Sources/Backend/RPC/Proto/FIRAuthProto.h  |    30 +
 .../RPC/Proto/FIRAuthProtoMFAEnrollment.h     |    33 +
 .../RPC/Proto/FIRAuthProtoMFAEnrollment.m     |    43 +
 .../FIRAuthProtoFinalizeMFAPhoneRequestInfo.h |    31 +
 .../FIRAuthProtoFinalizeMFAPhoneRequestInfo.m |    46 +
 ...FIRAuthProtoFinalizeMFAPhoneResponseInfo.h |    27 +
 ...FIRAuthProtoFinalizeMFAPhoneResponseInfo.m |    33 +
 .../FIRAuthProtoStartMFAPhoneRequestInfo.h    |    36 +
 .../FIRAuthProtoStartMFAPhoneRequestInfo.m    |    74 +
 .../FIRAuthProtoStartMFAPhoneResponseInfo.h   |    27 +
 .../FIRAuthProtoStartMFAPhoneResponseInfo.m   |    33 +
 .../MultiFactor/FIRMultiFactor+Internal.h     |    39 +
 .../Sources/MultiFactor/FIRMultiFactor.m      |   195 +
 .../FIRMultiFactorAssertion+Internal.h        |    33 +
 .../MultiFactor/FIRMultiFactorAssertion.m     |    29 +
 .../MultiFactor/FIRMultiFactorConstants.m     |    26 +
 .../MultiFactor/FIRMultiFactorInfo+Internal.h |    37 +
 .../Sources/MultiFactor/FIRMultiFactorInfo.m  |    74 +
 .../FIRMultiFactorResolver+Internal.h         |    34 +
 .../MultiFactor/FIRMultiFactorResolver.m      |   101 +
 .../FIRMultiFactorSession+Internal.h          |    39 +
 .../MultiFactor/FIRMultiFactorSession.m       |    52 +
 .../FIRPhoneMultiFactorAssertion+Internal.h   |    33 +
 .../Phone/FIRPhoneMultiFactorAssertion.m      |    43 +
 .../Phone/FIRPhoneMultiFactorGenerator.m      |    36 +
 .../Phone/FIRPhoneMultiFactorInfo+Internal.h  |    30 +
 .../Phone/FIRPhoneMultiFactorInfo.m           |    41 +
 .../FirebaseAuth/FIRActionCodeSettings.h      |    89 +
 .../FirebaseAuth/FIRAdditionalUserInfo.h      |    57 +
 .../Sources/Public/FirebaseAuth/FIRAuth.h     |   867 +
 .../FirebaseAuth/FIRAuthAPNSTokenType.h       |    41 +
 .../Public/FirebaseAuth/FIRAuthCredential.h   |    41 +
 .../Public/FirebaseAuth/FIRAuthDataResult.h   |    57 +
 .../Public/FirebaseAuth/FIRAuthErrors.h       |   436 +
 .../Public/FirebaseAuth/FIRAuthSettings.h     |    35 +
 .../Public/FirebaseAuth/FIRAuthTokenResult.h  |    69 +
 .../Public/FirebaseAuth/FIRAuthUIDelegate.h   |    54 +
 .../FirebaseAuth/FIREmailAuthProvider.h       |    73 +
 .../FirebaseAuth/FIRFacebookAuthProvider.h    |    54 +
 .../FirebaseAuth/FIRFederatedAuthProvider.h   |    54 +
 .../FirebaseAuth/FIRGameCenterAuthProvider.h  |    65 +
 .../FirebaseAuth/FIRGitHubAuthProvider.h      |    54 +
 .../FirebaseAuth/FIRGoogleAuthProvider.h      |    56 +
 .../Public/FirebaseAuth/FIRMultiFactor.h      |    89 +
 .../FirebaseAuth/FIRMultiFactorAssertion.h    |    36 +
 .../Public/FirebaseAuth/FIRMultiFactorInfo.h  |    50 +
 .../FirebaseAuth/FIRMultiFactorResolver.h     |    56 +
 .../FirebaseAuth/FIRMultiFactorSession.h      |    31 +
 .../Public/FirebaseAuth/FIROAuthCredential.h  |    53 +
 .../Public/FirebaseAuth/FIROAuthProvider.h    |   124 +
 .../FirebaseAuth/FIRPhoneAuthCredential.h     |    37 +
 .../FirebaseAuth/FIRPhoneAuthProvider.h       |   144 +
 .../FIRPhoneMultiFactorAssertion.h            |    33 +
 .../FIRPhoneMultiFactorGenerator.h            |    43 +
 .../FirebaseAuth/FIRPhoneMultiFactorInfo.h    |    38 +
 .../FirebaseAuth/FIRTwitterAuthProvider.h     |    54 +
 .../Sources/Public/FirebaseAuth/FIRUser.h     |   550 +
 .../Sources/Public/FirebaseAuth/FIRUserInfo.h |    60 +
 .../Public/FirebaseAuth/FIRUserMetadata.h     |    45 +
 .../Public/FirebaseAuth/FirebaseAuth.h        |    51 +
 .../Sources/Storage/FIRAuthKeychainServices.h |    99 +
 .../Sources/Storage/FIRAuthKeychainServices.m |   342 +
 .../Sources/Storage/FIRAuthUserDefaults.h     |    36 +
 .../Sources/Storage/FIRAuthUserDefaults.m     |    74 +
 .../Sources/SystemService/FIRAuthAPNSToken.h  |    63 +
 .../Sources/SystemService/FIRAuthAPNSToken.m  |    57 +
 .../SystemService/FIRAuthAPNSTokenManager.h   |    83 +
 .../SystemService/FIRAuthAPNSTokenManager.m   |   250 +
 .../SystemService/FIRAuthAppCredential.h      |    52 +
 .../SystemService/FIRAuthAppCredential.m      |    64 +
 .../FIRAuthAppCredentialManager.h             |    90 +
 .../FIRAuthAppCredentialManager.m             |   180 +
 .../FIRAuthNotificationManager.h              |    76 +
 .../FIRAuthNotificationManager.m              |   189 +
 .../SystemService/FIRAuthStoredUserManager.h  |   108 +
 .../SystemService/FIRAuthStoredUserManager.m  |   175 +
 .../SystemService/FIRSecureTokenService.h     |    99 +
 .../SystemService/FIRSecureTokenService.m     |   227 +
 .../Sources/User/FIRAdditionalUserInfo.m      |    97 +
 .../User/FIRAdditionalUserInfo_Internal.h     |    46 +
 .../FirebaseAuth/Sources/User/FIRUser.m       |  1627 +
 .../Sources/User/FIRUserInfoImpl.h            |    60 +
 .../Sources/User/FIRUserInfoImpl.m            |   131 +
 .../Sources/User/FIRUserMetadata.m            |    64 +
 .../Sources/User/FIRUserMetadata_Internal.h   |    37 +
 .../Sources/User/FIRUser_Internal.h           |   107 +
 .../Utilities/FIRAuthDefaultUIDelegate.h      |    47 +
 .../Utilities/FIRAuthDefaultUIDelegate.m      |   126 +
 .../Sources/Utilities/FIRAuthErrorUtils.h     |   598 +
 .../Sources/Utilities/FIRAuthErrorUtils.m     |  1397 +
 .../Sources/Utilities/FIRAuthExceptionUtils.h |    41 +
 .../Sources/Utilities/FIRAuthExceptionUtils.m |    41 +
 .../Sources/Utilities/FIRAuthInternalErrors.h |   543 +
 .../Sources/Utilities/FIRAuthURLPresenter.h   |    69 +
 .../Sources/Utilities/FIRAuthURLPresenter.m   |   208 +
 .../Sources/Utilities/FIRAuthWebUtils.h       |   102 +
 .../Sources/Utilities/FIRAuthWebUtils.m       |   211 +
 .../Sources/Utilities/FIRAuthWebView.h        |    44 +
 .../Sources/Utilities/FIRAuthWebView.m        |   104 +
 .../Utilities/FIRAuthWebViewController.h      |    78 +
 .../Utilities/FIRAuthWebViewController.m      |   118 +
 .../Sources/Utilities/NSData+FIRBase64.h      |    31 +
 .../Sources/Utilities/NSData+FIRBase64.m      |    33 +
 .../Sources/Private/FIRAppInternal.h          |   153 +
 .../Sources/Private/FIRComponent.h            |    91 +
 .../Sources/Private/FIRComponentContainer.h   |    41 +
 .../Sources/Private/FIRComponentType.h        |    34 +
 .../Private/FIRCoreDiagnosticsConnector.h     |    35 +
 .../Sources/Private/FIRDependency.h           |    45 +
 .../Sources/Private/FIRHeartbeatInfo.h        |    39 +
 .../FirebaseCore/Sources/Private/FIRLibrary.h |    44 +
 .../FirebaseCore/Sources/Private/FIRLogger.h  |   146 +
 .../Sources/Private/FIROptionsInternal.h      |   115 +
 .../Sources/Private/FirebaseCoreInternal.h    |    28 +
 .../Interop/Auth/Public/FIRAuthInterop.h      |    44 +
 ChattingApp 000/Pods/FirebaseAuth/LICENSE     |   202 +
 ChattingApp 000/Pods/FirebaseAuth/README.md   |   333 +
 .../Sources/FIRAnalyticsConfiguration.h       |    56 +
 .../Sources/FIRAnalyticsConfiguration.m       |    62 +
 .../FirebaseCore/Sources/FIRApp.m             |   862 +
 .../Sources/FIRAppAssociationRegistration.h   |    49 +
 .../Sources/FIRAppAssociationRegistration.m   |    47 +
 .../FirebaseCore/Sources/FIRBundleUtil.h      |    53 +
 .../FirebaseCore/Sources/FIRBundleUtil.m      |    79 +
 .../FirebaseCore/Sources/FIRComponent.m       |    65 +
 .../Sources/FIRComponentContainer.m           |   214 +
 .../Sources/FIRComponentContainerInternal.h   |    49 +
 .../FirebaseCore/Sources/FIRComponentType.m   |    28 +
 .../FirebaseCore/Sources/FIRConfiguration.m   |    46 +
 .../Sources/FIRConfigurationInternal.h        |    29 +
 .../Sources/FIRCoreDiagnosticsConnector.m     |    61 +
 .../FirebaseCore/Sources/FIRDependency.m      |    44 +
 .../FirebaseCore/Sources/FIRDiagnosticsData.h |    35 +
 .../FirebaseCore/Sources/FIRDiagnosticsData.m |    66 +
 .../Sources/FIRFirebaseUserAgent.h            |    36 +
 .../Sources/FIRFirebaseUserAgent.m            |   107 +
 .../FirebaseCore/Sources/FIRHeartbeatInfo.m   |    72 +
 .../FirebaseCore/Sources/FIRLogger.m          |   174 +
 .../FirebaseCore/Sources/FIROptions.m         |   498 +
 .../FirebaseCore/Sources/FIRVersion.m         |    32 +
 .../Sources/Private/FIRAppInternal.h          |   153 +
 .../Sources/Private/FIRComponent.h            |    91 +
 .../Sources/Private/FIRComponentContainer.h   |    41 +
 .../Sources/Private/FIRComponentType.h        |    34 +
 .../Private/FIRCoreDiagnosticsConnector.h     |    35 +
 .../Sources/Private/FIRDependency.h           |    45 +
 .../Sources/Private/FIRHeartbeatInfo.h        |    39 +
 .../FirebaseCore/Sources/Private/FIRLibrary.h |    44 +
 .../FirebaseCore/Sources/Private/FIRLogger.h  |   146 +
 .../Sources/Private/FIROptionsInternal.h      |   115 +
 .../Sources/Private/FirebaseCoreInternal.h    |    28 +
 .../Sources/Public/FirebaseCore/FIRApp.h      |   127 +
 .../Public/FirebaseCore/FIRConfiguration.h    |    45 +
 .../Public/FirebaseCore/FIRLoggerLevel.h      |    38 +
 .../Sources/Public/FirebaseCore/FIROptions.h  |   126 +
 .../Sources/Public/FirebaseCore/FIRVersion.h  |    25 +
 .../Public/FirebaseCore/FirebaseCore.h        |    21 +
 .../Public/FIRCoreDiagnosticsData.h           |    61 +
 .../Public/FIRCoreDiagnosticsInterop.h        |    34 +
 ChattingApp 000/Pods/FirebaseCore/LICENSE     |   202 +
 ChattingApp 000/Pods/FirebaseCore/README.md   |   333 +
 .../FIRCDLibrary/FIRCoreDiagnostics.m         |   551 +
 .../Protogen/nanopb/firebasecore.nanopb.c     |    60 +
 .../Protogen/nanopb/firebasecore.nanopb.h     |   193 +
 .../FIRCDLibrary/Public/FIRCoreDiagnostics.h  |    18 +
 .../Public/FIRCoreDiagnosticsData.h           |    61 +
 .../Public/FIRCoreDiagnosticsInterop.h        |    34 +
 .../Pods/FirebaseCoreDiagnostics/LICENSE      |   202 +
 .../Pods/FirebaseCoreDiagnostics/README.md    |   333 +
 .../Sources/Private/FIRAppInternal.h          |   153 +
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 .../core/src/remote/connectivity_monitor.cc   |    49 +
 .../core/src/remote/connectivity_monitor.h    |    91 +
 .../src/remote/connectivity_monitor_apple.mm  |   196 +
 .../Firestore/core/src/remote/datastore.cc    |   354 +
 .../Firestore/core/src/remote/datastore.h     |   199 +
 .../core/src/remote/existence_filter.h        |    46 +
 .../core/src/remote/exponential_backoff.cc    |   135 +
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 .../src/remote/grpc_root_certificate_finder.h |    39 +
 .../grpc_root_certificate_finder_generated.cc |    38 +
 .../grpc_root_certificates_generated.cc       | 23712 ++++++++++++++
 .../remote/grpc_root_certificates_generated.h |    20 +
 .../Firestore/core/src/remote/grpc_stream.cc  |   362 +
 .../Firestore/core/src/remote/grpc_stream.h   |   248 +
 .../core/src/remote/grpc_stream_observer.h    |    44 +
 .../core/src/remote/grpc_streaming_reader.cc  |    86 +
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 .../core/src/remote/grpc_unary_call.cc        |   120 +
 .../core/src/remote/grpc_unary_call.h         |   113 +
 .../Firestore/core/src/remote/grpc_util.cc    |    48 +
 .../Firestore/core/src/remote/grpc_util.h     |    33 +
 .../core/src/remote/online_state_tracker.cc   |   150 +
 .../core/src/remote/online_state_tracker.h    |   126 +
 .../Firestore/core/src/remote/remote_event.cc |   424 +
 .../Firestore/core/src/remote/remote_event.h  |   437 +
 .../core/src/remote/remote_objc_bridge.cc     |   269 +
 .../core/src/remote/remote_objc_bridge.h      |   148 +
 .../Firestore/core/src/remote/remote_store.cc |   571 +
 .../Firestore/core/src/remote/remote_store.h  |   313 +
 .../Firestore/core/src/remote/serializer.cc   |  1401 +
 .../Firestore/core/src/remote/serializer.h    |   329 +
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 .../Firestore/core/src/remote/watch_change.h  |   219 +
 .../Firestore/core/src/remote/watch_stream.cc |   114 +
 .../Firestore/core/src/remote/watch_stream.h  |   129 +
 .../Firestore/core/src/remote/write_stream.cc |   157 +
 .../Firestore/core/src/remote/write_stream.h  |   158 +
 .../Firestore/core/src/timestamp.cc           |   139 +
 .../Firestore/core/src/timestamp_internal.cc  |    70 +
 .../Firestore/core/src/timestamp_internal.h   |    64 +
 .../Firestore/core/src/util/async_queue.cc    |   198 +
 .../Firestore/core/src/util/async_queue.h     |   246 +
 .../Firestore/core/src/util/autoid.cc         |    59 +
 .../Firestore/core/src/util/autoid.h          |    33 +
 .../core/src/util/background_queue.cc         |    52 +
 .../core/src/util/background_queue.h          |    57 +
 .../Firestore/core/src/util/bits.cc           |    43 +
 .../Firestore/core/src/util/bits.h            |   184 +
 .../Firestore/core/src/util/byte_stream.h     |   104 +
 .../core/src/util/byte_stream_apple.h         |    59 +
 .../core/src/util/byte_stream_apple.mm        |   122 +
 .../core/src/util/byte_stream_cpp.cc          |    66 +
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 .../Firestore/core/src/util/comparison.cc     |   126 +
 .../Firestore/core/src/util/comparison.h      |   386 +
 .../core/src/util/compressed_member.h         |    79 +
 .../Firestore/core/src/util/config.h          |    57 +
 .../Firestore/core/src/util/defer.h           |    75 +
 .../core/src/util/delayed_constructor.h       |   132 +
 .../Firestore/core/src/util/empty.h           |    37 +
 .../Firestore/core/src/util/equality.h        |    40 +
 .../Firestore/core/src/util/error_apple.h     |    87 +
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 .../core/src/util/executor_libdispatch.h      |   130 +
 .../core/src/util/executor_libdispatch.mm     |   379 +
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 .../core/src/util/firestore_exceptions.h      |    94 +
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 .../Firestore/core/src/util/hashing.h         |   228 +
 .../core/src/util/iterator_adaptors.h         |   812 +
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 .../Firestore/core/src/util/log_apple.mm      |    95 +
 .../Firestore/core/src/util/nullability.h     |    44 +
 .../Firestore/core/src/util/ordered_code.cc   |   624 +
 .../Firestore/core/src/util/ordered_code.h    |   129 +
 .../Firestore/core/src/util/path.cc           |   249 +
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 .../core/src/util/random_access_queue.h       |   270 +
 .../Firestore/core/src/util/range.h           |    78 +
 .../Firestore/core/src/util/read_context.h    |    74 +
 .../Firestore/core/src/util/sanitizers.h      |    55 +
 .../Firestore/core/src/util/schedule.cc       |   133 +
 .../Firestore/core/src/util/schedule.h        |   130 +
 .../Firestore/core/src/util/secure_random.h   |    74 +
 .../core/src/util/secure_random_arc4random.cc |    37 +
 .../Firestore/core/src/util/status.cc         |   197 +
 .../Firestore/core/src/util/status.h          |   250 +
 .../Firestore/core/src/util/status_apple.mm   |   128 +
 .../Firestore/core/src/util/status_errno.cc   |   199 +
 .../Firestore/core/src/util/status_fwd.h      |    42 +
 .../Firestore/core/src/util/status_win.cc     |   106 +
 .../Firestore/core/src/util/statusor.cc       |    42 +
 .../Firestore/core/src/util/statusor.h        |   323 +
 .../core/src/util/statusor_internals.h        |   258 +
 .../Firestore/core/src/util/strerror.cc       |    91 +
 .../Firestore/core/src/util/strerror.h        |    36 +
 .../Firestore/core/src/util/string_apple.cc   |    56 +
 .../Firestore/core/src/util/string_apple.h    |   105 +
 .../Firestore/core/src/util/string_format.cc  |    94 +
 .../Firestore/core/src/util/string_format.h   |   172 +
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 .../Firestore/core/src/util/string_util.h     |    77 +
 .../Firestore/core/src/util/string_win.cc     |   126 +
 .../Firestore/core/src/util/string_win.h      |    55 +
 .../Firestore/core/src/util/task.cc           |   222 +
 .../Firestore/core/src/util/task.h            |   229 +
 .../Firestore/core/src/util/to_string.h       |   194 +
 .../Firestore/core/src/util/type_traits.h     |    55 +
 .../Firestore/core/src/util/warnings.h        |    91 +
 .../third_party/nlohmann_json/json.hpp        | 25447 ++++++++++++++++
 .../Interop/Auth/Public/FIRAuthInterop.h      |    44 +
 .../Pods/FirebaseFirestore/LICENSE            |   202 +
 .../Pods/FirebaseFirestore/README.md          |   333 +
 .../Pods/GTMSessionFetcher/LICENSE            |   202 +
 .../Pods/GTMSessionFetcher/README.md          |    23 +
 .../Source/GTMSessionFetcher.h                |  1386 +
 .../Source/GTMSessionFetcher.m                |  4758 +++
 .../Source/GTMSessionFetcherLogging.h         |   111 +
 .../Source/GTMSessionFetcherLogging.m         |   965 +
 .../Source/GTMSessionFetcherService.h         |   210 +
 .../Source/GTMSessionFetcherService.m         |  1383 +
 .../Source/GTMSessionUploadFetcher.h          |   173 +
 .../Source/GTMSessionUploadFetcher.m          |  2001 ++
 .../GDTCCTLibrary/GDTCCTCompressionHelper.m   |    95 +
 .../GDTCCTLibrary/GDTCCTNanopbHelpers.m       |   270 +
 .../GDTCCTLibrary/GDTCCTUploadOperation.m     |   573 +
 .../GDTCCTLibrary/GDTCCTUploader.m            |   210 +
 .../GDTCCTLibrary/GDTCOREvent+GDTCCTSupport.m |   240 +
 .../Private/GDTCCTCompressionHelper.h         |    40 +
 .../Private/GDTCCTNanopbHelpers.h             |   128 +
 .../Private/GDTCCTUploadOperation.h           |    76 +
 .../GDTCCTLibrary/Private/GDTCCTUploader.h    |    45 +
 .../Protogen/nanopb/cct.nanopb.c              |   128 +
 .../Protogen/nanopb/cct.nanopb.h              |   281 +
 .../Public/GDTCOREvent+GDTCCTSupport.h        |    51 +
 .../GDTCORLibrary/GDTCORAssert.m              |    36 +
 .../GDTCORLibrary/GDTCORClock.m               |   178 +
 .../GDTCORLibrary/GDTCORConsoleLogger.m       |    55 +
 .../GDTCORDirectorySizeTracker.m              |   101 +
 .../GDTCORLibrary/GDTCOREndpoints.m           |    92 +
 .../GDTCORLibrary/GDTCOREvent.m               |   153 +
 .../GDTCORFlatFileStorage+Promises.m          |   104 +
 .../GDTCORLibrary/GDTCORFlatFileStorage.m     |   826 +
 .../GDTCORLibrary/GDTCORLifecycle.m           |   119 +
 .../GDTCORLibrary/GDTCORPlatform.m            |   604 +
 .../GDTCORLibrary/GDTCORReachability.m        |   125 +
 .../GDTCORLibrary/GDTCORRegistrar.m           |   157 +
 .../GDTCORStorageEventSelector.m              |    39 +
 .../GDTCORLibrary/GDTCORTransformer.m         |   111 +
 .../GDTCORLibrary/GDTCORTransport.m           |    92 +
 .../GDTCORLibrary/GDTCORUploadBatch.m         |    30 +
 .../GDTCORLibrary/GDTCORUploadCoordinator.m   |   176 +
 .../GDTCORLibrary/Internal/GDTCORAssert.h     |    95 +
 .../Internal/GDTCORDirectorySizeTracker.h     |    66 +
 .../GDTCORLibrary/Internal/GDTCORLifecycle.h  |    63 +
 .../GDTCORLibrary/Internal/GDTCORPlatform.h   |   225 +
 .../Internal/GDTCORReachability.h             |    31 +
 .../GDTCORLibrary/Internal/GDTCORRegistrar.h  |    50 +
 .../Internal/GDTCORStorageEventSelector.h     |    61 +
 .../Internal/GDTCORStorageProtocol.h          |   171 +
 .../GDTCORLibrary/Internal/GDTCORUploader.h   |    59 +
 .../Private/GDTCOREndpoints_Private.h         |    27 +
 .../Private/GDTCOREvent_Private.h             |    33 +
 .../Private/GDTCORFlatFileStorage+Promises.h  |    28 +
 .../Private/GDTCORFlatFileStorage.h           |   158 +
 .../Private/GDTCORReachability_Private.h      |    30 +
 .../Private/GDTCORRegistrar_Private.h         |    35 +
 .../GDTCORLibrary/Private/GDTCORTransformer.h |    57 +
 .../Private/GDTCORTransformer_Private.h       |    37 +
 .../Private/GDTCORTransport_Private.h         |    39 +
 .../GDTCORLibrary/Private/GDTCORUploadBatch.h |    37 +
 .../Private/GDTCORUploadCoordinator.h         |    68 +
 .../Public/GoogleDataTransport/GDTCORClock.h  |    66 +
 .../GoogleDataTransport/GDTCORConsoleLogger.h |   144 +
 .../GoogleDataTransport/GDTCOREndpoints.h     |    36 +
 .../Public/GoogleDataTransport/GDTCOREvent.h  |    87 +
 .../GDTCOREventDataObject.h                   |    36 +
 .../GDTCOREventTransformer.h                  |    38 +
 .../GoogleDataTransport/GDTCORTargets.h       |    40 +
 .../GoogleDataTransport/GDTCORTransport.h     |    92 +
 .../GoogleDataTransport/GoogleDataTransport.h |    24 +
 .../Pods/GoogleDataTransport/LICENSE          |   202 +
 .../Pods/GoogleDataTransport/README.md        |   231 +
 .../GULAppDelegateSwizzler.m                  |  1070 +
 .../GULSceneDelegateSwizzler.m                |   439 +
 .../Internal/GULAppDelegateSwizzler_Private.h |    55 +
 .../GULSceneDelegateSwizzler_Private.h        |    48 +
 .../GoogleUtilities/GULAppDelegateSwizzler.h  |   107 +
 .../Public/GoogleUtilities/GULApplication.h   |    50 +
 .../GULSceneDelegateSwizzler.h                |    76 +
 .../GoogleUtilities/Common/GULLoggerCodes.h   |    56 +
 .../Environment/GULHeartbeatDateStorage.m     |   153 +
 .../GULHeartbeatDateStorageUserDefaults.m     |    68 +
 .../Environment/GULSecureCoding.m             |   103 +
 .../GoogleUtilities/GULAppEnvironmentUtil.h   |    60 +
 .../GULHeartbeatDateStorable.h                |    40 +
 .../GoogleUtilities/GULHeartbeatDateStorage.h |    54 +
 .../GULHeartbeatDateStorageUserDefaults.h     |    51 +
 .../GoogleUtilities/GULKeychainStorage.h      |    79 +
 .../Public/GoogleUtilities/GULKeychainUtils.h |    61 +
 .../Public/GoogleUtilities/GULSecureCoding.h  |    36 +
 .../GULURLSessionDataResponse.h               |    31 +
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 .../SecureStorage/GULKeychainStorage.m        |   192 +
 .../SecureStorage/GULKeychainUtils.m          |   113 +
 .../GULURLSessionDataResponse.m               |    30 +
 .../NSURLSession+GULPromises.m                |    46 +
 .../third_party/GULAppEnvironmentUtil.m       |   333 +
 .../GoogleUtilities/Logger/GULLogger.m        |   215 +
 .../Logger/Public/GoogleUtilities/GULLogger.h |   159 +
 .../Public/GoogleUtilities/GULLoggerLevel.h   |    37 +
 .../NSData+zlib/GULNSData+zlib.m              |   207 +
 .../Public/GoogleUtilities/GULNSData+zlib.h   |    49 +
 .../Network/GULMutableDictionary.m            |   101 +
 .../GoogleUtilities/Network/GULNetwork.m      |   390 +
 .../Network/GULNetworkConstants.m             |    41 +
 .../Network/GULNetworkInternal.h              |    24 +
 .../Network/GULNetworkURLSession.m            |   766 +
 .../GoogleUtilities/GULMutableDictionary.h    |    46 +
 .../Public/GoogleUtilities/GULNetwork.h       |    87 +
 .../GoogleUtilities/GULNetworkConstants.h     |    71 +
 .../GULNetworkLoggerProtocol.h                |    49 +
 .../GoogleUtilities/GULNetworkMessageCode.h   |    47 +
 .../GoogleUtilities/GULNetworkURLSession.h    |    62 +
 .../GULReachabilityChecker+Internal.h         |    48 +
 .../Reachability/GULReachabilityChecker.m     |   263 +
 .../Reachability/GULReachabilityMessageCode.h |    29 +
 .../GoogleUtilities/GULReachabilityChecker.h  |    79 +
 ChattingApp 000/Pods/GoogleUtilities/LICENSE  |   247 +
 .../Pods/GoogleUtilities/README.md            |   189 +
 .../Pods/Headers/Private/Firebase/Firebase.h  |     1 +
 .../Pods/Headers/Public/Firebase/Firebase.h   |     1 +
 ChattingApp 000/Pods/Manifest.lock            |   475 +
 .../Pods/Pods.xcodeproj/project.pbxproj       | 21554 +++++++++++++
 ChattingApp 000/Pods/PromisesObjC/LICENSE     |   202 +
 ChattingApp 000/Pods/PromisesObjC/README.md   |    60 +
 .../Sources/FBLPromises/FBLPromise+All.m      |    86 +
 .../Sources/FBLPromises/FBLPromise+Always.m   |    58 +
 .../Sources/FBLPromises/FBLPromise+Any.m      |   112 +
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 .../Sources/FBLPromises/FBLPromise+Testing.m  |    55 +
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 .../Sources/FBLPromises/FBLPromise+Wrap.m     |   420 +
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 .../Sources/FBLPromises/FBLPromiseError.m     |    19 +
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 .../FBLPromises/include/FBLPromise+Any.h      |    69 +
 .../FBLPromises/include/FBLPromise+Async.h    |    60 +
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 .../FBLPromises/include/FBLPromise+Catch.h    |    59 +
 .../FBLPromises/include/FBLPromise+Delay.h    |    59 +
 .../FBLPromises/include/FBLPromise+Do.h       |    55 +
 .../FBLPromises/include/FBLPromise+Race.h     |    62 +
 .../FBLPromises/include/FBLPromise+Recover.h  |    60 +
 .../FBLPromises/include/FBLPromise+Reduce.h   |    71 +
 .../FBLPromises/include/FBLPromise+Retry.h    |   165 +
 .../FBLPromises/include/FBLPromise+Testing.h  |    57 +
 .../FBLPromises/include/FBLPromise+Then.h     |    63 +
 .../FBLPromises/include/FBLPromise+Timeout.h  |    57 +
 .../FBLPromises/include/FBLPromise+Validate.h |    60 +
 .../FBLPromises/include/FBLPromise+Wrap.h     |   316 +
 .../Sources/FBLPromises/include/FBLPromise.h  |    93 +
 .../FBLPromises/include/FBLPromiseError.h     |    43 +
 .../FBLPromises/include/FBLPromisePrivate.h   |    66 +
 .../Sources/FBLPromises/include/FBLPromises.h |    32 +
 .../BoringSSL-GRPC/BoringSSL-GRPC-Info.plist  |    26 +
 .../BoringSSL-GRPC/BoringSSL-GRPC-dummy.m     |     5 +
 .../BoringSSL-GRPC/BoringSSL-GRPC-prefix.pch  |  3289 ++
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 .../Pods-ChattingApp-Info.plist               |    26 +
 ...Pods-ChattingApp-acknowledgements.markdown |  2831 ++
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 .../Pods-ChattingApp/Pods-ChattingApp-dummy.m |     5 +
 ...pp-frameworks-Debug-input-files.xcfilelist |    15 +
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 .../Pods-ChattingApp-frameworks.sh            |   212 +
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 ...e-gRPCCertificates-Cpp-gRPC-C++-Info.plist |    24 +
 .../gRPC-C++/gRPC-C++-Info.plist              |    26 +
 .../gRPC-C++/gRPC-C++-dummy.m                 |     5 +
 .../gRPC-C++/gRPC-C++-prefix.pch              |    12 +
 .../gRPC-C++/gRPC-C++-umbrella.h              |   147 +
 .../gRPC-C++/gRPC-C++.debug.xcconfig          |    19 +
 .../gRPC-C++/gRPC-C++.modulemap               |     6 +
 .../gRPC-C++/gRPC-C++.release.xcconfig        |    19 +
 .../gRPC-Core/gRPC-Core-Info.plist            |    26 +
 .../gRPC-Core/gRPC-Core-dummy.m               |     5 +
 .../gRPC-Core/gRPC-Core-prefix.pch            |    12 +
 .../gRPC-Core/gRPC-Core.debug.xcconfig        |    19 +
 .../gRPC-Core/gRPC-Core.modulemap             |    79 +
 .../gRPC-Core/gRPC-Core.release.xcconfig      |    19 +
 .../leveldb-library-Info.plist                |    26 +
 .../leveldb-library/leveldb-library-dummy.m   |     5 +
 .../leveldb-library-prefix.pch                |    12 +
 .../leveldb-library-umbrella.h                |    31 +
 .../leveldb-library.debug.xcconfig            |    15 +
 .../leveldb-library/leveldb-library.modulemap |     6 +
 .../leveldb-library.release.xcconfig          |    15 +
 .../nanopb/nanopb-Info.plist                  |    26 +
 .../nanopb/nanopb-dummy.m                     |     5 +
 .../nanopb/nanopb-prefix.pch                  |    12 +
 .../nanopb/nanopb-umbrella.h                  |    26 +
 .../nanopb/nanopb.debug.xcconfig              |    11 +
 .../nanopb/nanopb.modulemap                   |     6 +
 .../nanopb/nanopb.release.xcconfig            |    11 +
 ChattingApp 000/Pods/abseil/LICENSE           |   203 +
 ChattingApp 000/Pods/abseil/README.md         |   114 +
 .../Pods/abseil/absl/algorithm/algorithm.h    |   159 +
 .../Pods/abseil/absl/algorithm/container.h    |  1727 ++
 .../Pods/abseil/absl/base/attributes.h        |   621 +
 .../Pods/abseil/absl/base/call_once.h         |   226 +
 ChattingApp 000/Pods/abseil/absl/base/casts.h |   184 +
 .../Pods/abseil/absl/base/config.h            |   671 +
 .../Pods/abseil/absl/base/const_init.h        |    76 +
 .../abseil/absl/base/dynamic_annotations.cc   |   129 +
 .../abseil/absl/base/dynamic_annotations.h    |   389 +
 .../abseil/absl/base/internal/atomic_hook.h   |   200 +
 .../Pods/abseil/absl/base/internal/bits.h     |   218 +
 .../abseil/absl/base/internal/cycleclock.cc   |   107 +
 .../abseil/absl/base/internal/cycleclock.h    |    94 +
 .../abseil/absl/base/internal/direct_mmap.h   |   161 +
 .../Pods/abseil/absl/base/internal/endian.h   |   266 +
 .../abseil/absl/base/internal/errno_saver.h   |    43 +
 .../absl/base/internal/exponential_biased.cc  |    93 +
 .../absl/base/internal/exponential_biased.h   |   130 +
 .../Pods/abseil/absl/base/internal/hide_ptr.h |    51 +
 .../Pods/abseil/absl/base/internal/identity.h |    37 +
 .../absl/base/internal/inline_variable.h      |   107 +
 .../Pods/abseil/absl/base/internal/invoke.h   |   187 +
 .../absl/base/internal/low_level_alloc.cc     |   620 +
 .../absl/base/internal/low_level_alloc.h      |   126 +
 .../absl/base/internal/low_level_scheduling.h |   107 +
 .../absl/base/internal/per_thread_tls.h       |    52 +
 .../absl/base/internal/periodic_sampler.cc    |    53 +
 .../absl/base/internal/periodic_sampler.h     |   211 +
 .../absl/base/internal/pretty_function.h      |    33 +
 .../abseil/absl/base/internal/raw_logging.cc  |   240 +
 .../abseil/absl/base/internal/raw_logging.h   |   183 +
 .../absl/base/internal/scheduling_mode.h      |    58 +
 .../abseil/absl/base/internal/spinlock.cc     |   233 +
 .../Pods/abseil/absl/base/internal/spinlock.h |   243 +
 .../absl/base/internal/spinlock_akaros.inc    |    35 +
 .../absl/base/internal/spinlock_linux.inc     |    66 +
 .../absl/base/internal/spinlock_posix.inc     |    46 +
 .../absl/base/internal/spinlock_wait.cc       |    81 +
 .../abseil/absl/base/internal/spinlock_wait.h |    93 +
 .../absl/base/internal/spinlock_win32.inc     |    37 +
 .../Pods/abseil/absl/base/internal/sysinfo.cc |   416 +
 .../Pods/abseil/absl/base/internal/sysinfo.h  |    66 +
 .../absl/base/internal/thread_annotations.h   |   271 +
 .../absl/base/internal/thread_identity.cc     |   152 +
 .../absl/base/internal/thread_identity.h      |   259 +
 .../absl/base/internal/throw_delegate.cc      |   108 +
 .../absl/base/internal/throw_delegate.h       |    75 +
 .../absl/base/internal/tsan_mutex_interface.h |    66 +
 .../absl/base/internal/unaligned_access.h     |   158 +
 .../absl/base/internal/unscaledcycleclock.cc  |   140 +
 .../absl/base/internal/unscaledcycleclock.h   |   124 +
 .../Pods/abseil/absl/base/log_severity.cc     |    27 +
 .../Pods/abseil/absl/base/log_severity.h      |   121 +
 .../Pods/abseil/absl/base/macros.h            |   220 +
 .../Pods/abseil/absl/base/optimization.h      |   181 +
 .../Pods/abseil/absl/base/options.h           |   211 +
 .../Pods/abseil/absl/base/policy_checks.h     |   111 +
 ChattingApp 000/Pods/abseil/absl/base/port.h  |    26 +
 .../abseil/absl/base/thread_annotations.h     |   280 +
 .../Pods/abseil/absl/container/fixed_array.h  |   515 +
 .../abseil/absl/container/flat_hash_map.h     |   600 +
 .../abseil/absl/container/inlined_vector.h    |   848 +
 .../abseil/absl/container/internal/common.h   |   202 +
 .../container/internal/compressed_tuple.h     |   265 +
 .../container/internal/container_memory.h     |   440 +
 .../internal/hash_function_defaults.h         |   146 +
 .../container/internal/hash_policy_traits.h   |   191 +
 .../internal/hashtable_debug_hooks.h          |    85 +
 .../container/internal/hashtablez_sampler.cc  |   269 +
 .../container/internal/hashtablez_sampler.h   |   297 +
 ...ashtablez_sampler_force_weak_definition.cc |    30 +
 .../abseil/absl/container/internal/have_sse.h |    49 +
 .../absl/container/internal/inlined_vector.h  |   892 +
 .../abseil/absl/container/internal/layout.h   |   741 +
 .../absl/container/internal/raw_hash_map.h    |   197 +
 .../absl/container/internal/raw_hash_set.cc   |    48 +
 .../absl/container/internal/raw_hash_set.h    |  1882 ++
 .../debugging/internal/address_is_readable.cc |   138 +
 .../debugging/internal/address_is_readable.h  |    32 +
 .../absl/debugging/internal/demangle.cc       |  1895 ++
 .../abseil/absl/debugging/internal/demangle.h |    71 +
 .../absl/debugging/internal/elf_mem_image.cc  |   382 +
 .../absl/debugging/internal/elf_mem_image.h   |   134 +
 .../internal/stacktrace_aarch64-inl.inc       |   192 +
 .../debugging/internal/stacktrace_arm-inl.inc |   125 +
 .../debugging/internal/stacktrace_config.h    |    70 +
 .../internal/stacktrace_generic-inl.inc       |    99 +
 .../internal/stacktrace_powerpc-inl.inc       |   248 +
 .../internal/stacktrace_unimplemented-inl.inc |    24 +
 .../internal/stacktrace_win32-inl.inc         |    85 +
 .../debugging/internal/stacktrace_x86-inl.inc |   346 +
 .../absl/debugging/internal/symbolize.h       |   128 +
 .../absl/debugging/internal/vdso_support.cc   |   194 +
 .../absl/debugging/internal/vdso_support.h    |   158 +
 .../Pods/abseil/absl/debugging/stacktrace.cc  |   140 +
 .../Pods/abseil/absl/debugging/stacktrace.h   |   231 +
 .../Pods/abseil/absl/debugging/symbolize.cc   |    25 +
 .../Pods/abseil/absl/debugging/symbolize.h    |    99 +
 .../abseil/absl/debugging/symbolize_elf.inc   |  1480 +
 .../debugging/symbolize_unimplemented.inc     |    40 +
 .../abseil/absl/debugging/symbolize_win32.inc |    81 +
 ChattingApp 000/Pods/abseil/absl/hash/hash.h  |   324 +
 .../Pods/abseil/absl/hash/internal/city.cc    |   346 +
 .../Pods/abseil/absl/hash/internal/city.h     |    96 +
 .../Pods/abseil/absl/hash/internal/hash.cc    |    55 +
 .../Pods/abseil/absl/hash/internal/hash.h     |   988 +
 .../Pods/abseil/absl/memory/memory.h          |   695 +
 .../Pods/abseil/absl/meta/type_traits.h       |   759 +
 .../Pods/abseil/absl/numeric/int128.cc        |   404 +
 .../Pods/abseil/absl/numeric/int128.h         |  1091 +
 .../absl/numeric/int128_have_intrinsic.inc    |   302 +
 .../absl/numeric/int128_no_intrinsic.inc      |   308 +
 .../Pods/abseil/absl/strings/ascii.cc         |   200 +
 .../Pods/abseil/absl/strings/ascii.h          |   242 +
 .../Pods/abseil/absl/strings/charconv.cc      |   984 +
 .../Pods/abseil/absl/strings/charconv.h       |   119 +
 .../Pods/abseil/absl/strings/escaping.cc      |   949 +
 .../Pods/abseil/absl/strings/escaping.h       |   164 +
 .../abseil/absl/strings/internal/char_map.h   |   156 +
 .../absl/strings/internal/charconv_bigint.cc  |   359 +
 .../absl/strings/internal/charconv_bigint.h   |   423 +
 .../absl/strings/internal/charconv_parse.cc   |   504 +
 .../absl/strings/internal/charconv_parse.h    |    99 +
 .../abseil/absl/strings/internal/escaping.cc  |   180 +
 .../abseil/absl/strings/internal/escaping.h   |    58 +
 .../abseil/absl/strings/internal/memutil.cc   |   112 +
 .../abseil/absl/strings/internal/memutil.h    |   148 +
 .../absl/strings/internal/ostringstream.cc    |    36 +
 .../absl/strings/internal/ostringstream.h     |    89 +
 .../strings/internal/resize_uninitialized.h   |    73 +
 .../absl/strings/internal/stl_type_traits.h   |   248 +
 .../absl/strings/internal/str_format/arg.cc   |   388 +
 .../absl/strings/internal/str_format/arg.h    |   432 +
 .../absl/strings/internal/str_format/bind.cc  |   245 +
 .../absl/strings/internal/str_format/bind.h   |   209 +
 .../strings/internal/str_format/checker.h     |   326 +
 .../strings/internal/str_format/extension.cc  |    51 +
 .../strings/internal/str_format/extension.h   |   415 +
 .../internal/str_format/float_conversion.cc   |   493 +
 .../internal/str_format/float_conversion.h    |    23 +
 .../strings/internal/str_format/output.cc     |    72 +
 .../absl/strings/internal/str_format/output.h |   104 +
 .../strings/internal/str_format/parser.cc     |   334 +
 .../absl/strings/internal/str_format/parser.h |   333 +
 .../absl/strings/internal/str_join_internal.h |   314 +
 .../strings/internal/str_split_internal.h     |   455 +
 .../Pods/abseil/absl/strings/internal/utf8.cc |    53 +
 .../Pods/abseil/absl/strings/internal/utf8.h  |    50 +
 .../Pods/abseil/absl/strings/match.cc         |    40 +
 .../Pods/abseil/absl/strings/match.h          |    90 +
 .../Pods/abseil/absl/strings/numbers.cc       |   965 +
 .../Pods/abseil/absl/strings/numbers.h        |   266 +
 .../Pods/abseil/absl/strings/str_cat.cc       |   246 +
 .../Pods/abseil/absl/strings/str_cat.h        |   408 +
 .../Pods/abseil/absl/strings/str_format.h     |   537 +
 .../Pods/abseil/absl/strings/str_join.h       |   293 +
 .../Pods/abseil/absl/strings/str_replace.cc   |    82 +
 .../Pods/abseil/absl/strings/str_replace.h    |   219 +
 .../Pods/abseil/absl/strings/str_split.cc     |   139 +
 .../Pods/abseil/absl/strings/str_split.h      |   513 +
 .../Pods/abseil/absl/strings/string_view.cc   |   235 +
 .../Pods/abseil/absl/strings/string_view.h    |   622 +
 .../Pods/abseil/absl/strings/strip.h          |    91 +
 .../Pods/abseil/absl/strings/substitute.cc    |   171 +
 .../Pods/abseil/absl/strings/substitute.h     |   693 +
 .../abseil/absl/synchronization/barrier.cc    |    52 +
 .../abseil/absl/synchronization/barrier.h     |    79 +
 .../absl/synchronization/blocking_counter.cc  |    57 +
 .../absl/synchronization/blocking_counter.h   |    99 +
 .../internal/create_thread_identity.cc        |   140 +
 .../internal/create_thread_identity.h         |    60 +
 .../synchronization/internal/graphcycles.cc   |   697 +
 .../synchronization/internal/graphcycles.h    |   141 +
 .../synchronization/internal/kernel_timeout.h |   155 +
 .../internal/mutex_nonprod.inc                |   261 +
 .../internal/per_thread_sem.cc                |   106 +
 .../synchronization/internal/per_thread_sem.h |   115 +
 .../absl/synchronization/internal/waiter.cc   |   484 +
 .../absl/synchronization/internal/waiter.h    |   159 +
 .../Pods/abseil/absl/synchronization/mutex.cc |  2728 ++
 .../Pods/abseil/absl/synchronization/mutex.h  |  1056 +
 .../absl/synchronization/notification.cc      |    78 +
 .../absl/synchronization/notification.h       |   123 +
 .../Pods/abseil/absl/time/civil_time.cc       |   175 +
 .../Pods/abseil/absl/time/civil_time.h        |   538 +
 .../Pods/abseil/absl/time/clock.cc            |   569 +
 ChattingApp 000/Pods/abseil/absl/time/clock.h |    74 +
 .../Pods/abseil/absl/time/duration.cc         |   922 +
 .../Pods/abseil/absl/time/format.cc           |   153 +
 .../internal/cctz/include/cctz/civil_time.h   |   332 +
 .../cctz/include/cctz/civil_time_detail.h     |   622 +
 .../internal/cctz/include/cctz/time_zone.h    |   384 +
 .../cctz/include/cctz/zone_info_source.h      |   102 +
 .../internal/cctz/src/civil_time_detail.cc    |    94 +
 .../time/internal/cctz/src/time_zone_fixed.cc |   140 +
 .../time/internal/cctz/src/time_zone_fixed.h  |    52 +
 .../internal/cctz/src/time_zone_format.cc     |   922 +
 .../time/internal/cctz/src/time_zone_if.cc    |    45 +
 .../time/internal/cctz/src/time_zone_if.h     |    76 +
 .../time/internal/cctz/src/time_zone_impl.cc  |   121 +
 .../time/internal/cctz/src/time_zone_impl.h   |    93 +
 .../time/internal/cctz/src/time_zone_info.cc  |   958 +
 .../time/internal/cctz/src/time_zone_info.h   |   138 +
 .../time/internal/cctz/src/time_zone_libc.cc  |   308 +
 .../time/internal/cctz/src/time_zone_libc.h   |    55 +
 .../internal/cctz/src/time_zone_lookup.cc     |   187 +
 .../time/internal/cctz/src/time_zone_posix.cc |   159 +
 .../time/internal/cctz/src/time_zone_posix.h  |   132 +
 .../absl/time/internal/cctz/src/tzfile.h      |   122 +
 .../internal/cctz/src/zone_info_source.cc     |   115 +
 .../time/internal/get_current_time_chrono.inc |    31 +
 .../time/internal/get_current_time_posix.inc  |    24 +
 ChattingApp 000/Pods/abseil/absl/time/time.cc |   499 +
 ChattingApp 000/Pods/abseil/absl/time/time.h  |  1584 +
 ChattingApp 000/Pods/abseil/absl/types/any.h  |   547 +
 .../Pods/abseil/absl/types/bad_any_cast.cc    |    46 +
 .../Pods/abseil/absl/types/bad_any_cast.h     |    75 +
 .../abseil/absl/types/bad_optional_access.cc  |    48 +
 .../abseil/absl/types/bad_optional_access.h   |    78 +
 .../abseil/absl/types/bad_variant_access.cc   |    64 +
 .../abseil/absl/types/bad_variant_access.h    |    82 +
 .../Pods/abseil/absl/types/compare.h          |   598 +
 .../abseil/absl/types/internal/optional.h     |   396 +
 .../Pods/abseil/absl/types/internal/span.h    |   128 +
 .../Pods/abseil/absl/types/internal/variant.h |  1646 +
 .../Pods/abseil/absl/types/optional.h         |   776 +
 ChattingApp 000/Pods/abseil/absl/types/span.h |   713 +
 .../Pods/abseil/absl/types/variant.h          |   861 +
 .../Pods/abseil/absl/utility/utility.h        |   350 +
 ChattingApp 000/Pods/gRPC-C++/LICENSE         |   202 +
 ChattingApp 000/Pods/gRPC-C++/README.md       |    85 +
 ChattingApp 000/Pods/gRPC-C++/etc/roots.pem   |  4644 +++
 .../Pods/gRPC-C++/include/grpcpp/alarm.h      |    29 +
 .../Pods/gRPC-C++/include/grpcpp/alarm_impl.h |   125 +
 .../Pods/gRPC-C++/include/grpcpp/channel.h    |    37 +
 .../gRPC-C++/include/grpcpp/channel_impl.h    |   126 +
 .../gRPC-C++/include/grpcpp/client_context.h  |    39 +
 .../include/grpcpp/completion_queue.h         |    24 +
 .../include/grpcpp/completion_queue_impl.h    |    24 +
 .../gRPC-C++/include/grpcpp/create_channel.h  |    57 +
 .../include/grpcpp/create_channel_impl.h      |    78 +
 .../include/grpcpp/create_channel_posix.h     |    57 +
 .../grpcpp/create_channel_posix_impl.h        |    70 +
 ...alth_check_service_server_builder_option.h |    47 +
 .../grpcpp/generic/async_generic_service.h    |    24 +
 .../include/grpcpp/generic/generic_stub.h     |    30 +
 .../grpcpp/generic/generic_stub_impl.h        |   216 +
 .../Pods/gRPC-C++/include/grpcpp/grpcpp.h     |    68 +
 .../grpcpp/health_check_service_interface.h   |    41 +
 .../health_check_service_interface_impl.h     |    55 +
 .../Pods/gRPC-C++/include/grpcpp/impl/call.h  |    24 +
 .../grpcpp/impl/channel_argument_option.h     |    37 +
 .../include/grpcpp/impl/client_unary_call.h   |    24 +
 .../impl/codegen/async_generic_service.h      |   163 +
 .../grpcpp/impl/codegen/async_stream.h        |    95 +
 .../grpcpp/impl/codegen/async_stream_impl.h   |  1134 +
 .../grpcpp/impl/codegen/async_unary_call.h    |    46 +
 .../impl/codegen/async_unary_call_impl.h      |   314 +
 .../include/grpcpp/impl/codegen/byte_buffer.h |   233 +
 .../include/grpcpp/impl/codegen/call.h        |    96 +
 .../include/grpcpp/impl/codegen/call_hook.h   |    39 +
 .../include/grpcpp/impl/codegen/call_op_set.h |  1007 +
 .../impl/codegen/call_op_set_interface.h      |    59 +
 .../grpcpp/impl/codegen/callback_common.h     |   222 +
 .../grpcpp/impl/codegen/channel_interface.h   |   176 +
 .../grpcpp/impl/codegen/client_callback.h     |    76 +
 .../impl/codegen/client_callback_impl.h       |  1064 +
 .../grpcpp/impl/codegen/client_context.h      |    31 +
 .../grpcpp/impl/codegen/client_context_impl.h |   519 +
 .../grpcpp/impl/codegen/client_interceptor.h  |   194 +
 .../grpcpp/impl/codegen/client_unary_call.h   |    94 +
 .../grpcpp/impl/codegen/completion_queue.h    |    31 +
 .../impl/codegen/completion_queue_impl.h      |   454 +
 .../impl/codegen/completion_queue_tag.h       |    54 +
 .../include/grpcpp/impl/codegen/config.h      |    41 +
 .../grpcpp/impl/codegen/core_codegen.h        |   127 +
 .../impl/codegen/core_codegen_interface.h     |   164 +
 .../grpcpp/impl/codegen/create_auth_context.h |    33 +
 .../grpcpp/impl/codegen/delegating_channel.h  |    87 +
 .../grpcpp/impl/codegen/grpc_library.h        |    64 +
 .../grpcpp/impl/codegen/intercepted_channel.h |    87 +
 .../include/grpcpp/impl/codegen/interceptor.h |   227 +
 .../grpcpp/impl/codegen/interceptor_common.h  |   556 +
 .../grpcpp/impl/codegen/message_allocator.h   |    93 +
 .../grpcpp/impl/codegen/metadata_map.h        |   105 +
 .../grpcpp/impl/codegen/method_handler.h      |    73 +
 .../grpcpp/impl/codegen/method_handler_impl.h |   388 +
 .../include/grpcpp/impl/codegen/rpc_method.h  |    61 +
 .../grpcpp/impl/codegen/rpc_service_method.h  |   156 +
 .../impl/codegen/security/auth_context.h      |    95 +
 .../impl/codegen/serialization_traits.h       |    62 +
 .../grpcpp/impl/codegen/server_callback.h     |    56 +
 .../impl/codegen/server_callback_handlers.h   |   880 +
 .../impl/codegen/server_callback_impl.h       |   780 +
 .../grpcpp/impl/codegen/server_context.h      |    42 +
 .../grpcpp/impl/codegen/server_context_impl.h |   602 +
 .../grpcpp/impl/codegen/server_interceptor.h  |   143 +
 .../grpcpp/impl/codegen/server_interface.h    |   403 +
 .../grpcpp/impl/codegen/service_type.h        |   279 +
 .../include/grpcpp/impl/codegen/slice.h       |   143 +
 .../include/grpcpp/impl/codegen/status.h      |   133 +
 .../grpcpp/impl/codegen/status_code_enum.h    |   143 +
 .../include/grpcpp/impl/codegen/string_ref.h  |   146 +
 .../grpcpp/impl/codegen/stub_options.h        |    29 +
 .../include/grpcpp/impl/codegen/sync.h        |   151 +
 .../include/grpcpp/impl/codegen/sync_stream.h |   100 +
 .../grpcpp/impl/codegen/sync_stream_impl.h    |   948 +
 .../include/grpcpp/impl/codegen/time.h        |    87 +
 .../include/grpcpp/impl/grpc_library.h        |    60 +
 .../include/grpcpp/impl/method_handler_impl.h |    24 +
 .../gRPC-C++/include/grpcpp/impl/rpc_method.h |    24 +
 .../include/grpcpp/impl/rpc_service_method.h  |    24 +
 .../grpcpp/impl/serialization_traits.h        |    24 +
 .../grpcpp/impl/server_builder_option.h       |    30 +
 .../grpcpp/impl/server_builder_option_impl.h  |    43 +
 .../grpcpp/impl/server_builder_plugin.h       |    68 +
 .../include/grpcpp/impl/server_initializer.h  |    30 +
 .../grpcpp/impl/server_initializer_impl.h     |    57 +
 .../include/grpcpp/impl/service_type.h        |    24 +
 .../gRPC-C++/include/grpcpp/resource_quota.h  |    29 +
 .../include/grpcpp/resource_quota_impl.h      |    68 +
 .../include/grpcpp/security/auth_context.h    |    24 +
 .../grpcpp/security/auth_metadata_processor.h |    30 +
 .../security/auth_metadata_processor_impl.h   |    61 +
 .../include/grpcpp/security/credentials.h     |   143 +
 .../grpcpp/security/credentials_impl.h        |   351 +
 .../grpcpp/security/server_credentials.h      |    91 +
 .../grpcpp/security/server_credentials_impl.h |    90 +
 .../grpcpp/security/tls_credentials_options.h |   330 +
 .../Pods/gRPC-C++/include/grpcpp/server.h     |    30 +
 .../gRPC-C++/include/grpcpp/server_builder.h  |    30 +
 .../include/grpcpp/server_builder_impl.h      |   416 +
 .../gRPC-C++/include/grpcpp/server_context.h  |    24 +
 .../gRPC-C++/include/grpcpp/server_impl.h     |   397 +
 .../gRPC-C++/include/grpcpp/server_posix.h    |    36 +
 .../include/grpcpp/server_posix_impl.h        |    42 +
 .../include/grpcpp/support/async_stream.h     |    24 +
 .../grpcpp/support/async_stream_impl.h        |    24 +
 .../include/grpcpp/support/async_unary_call.h |    24 +
 .../grpcpp/support/async_unary_call_impl.h    |    24 +
 .../include/grpcpp/support/byte_buffer.h      |    31 +
 .../grpcpp/support/channel_arguments.h        |    36 +
 .../grpcpp/support/channel_arguments_impl.h   |   152 +
 .../include/grpcpp/support/client_callback.h  |    24 +
 .../grpcpp/support/client_callback_impl.h     |    24 +
 .../grpcpp/support/client_interceptor.h       |    24 +
 .../gRPC-C++/include/grpcpp/support/config.h  |    24 +
 .../include/grpcpp/support/interceptor.h      |    24 +
 .../grpcpp/support/message_allocator.h        |    24 +
 .../grpcpp/support/proto_buffer_reader.h      |    24 +
 .../grpcpp/support/proto_buffer_writer.h      |    24 +
 .../include/grpcpp/support/server_callback.h  |    24 +
 .../grpcpp/support/server_callback_impl.h     |    24 +
 .../grpcpp/support/server_interceptor.h       |    24 +
 .../gRPC-C++/include/grpcpp/support/slice.h   |    26 +
 .../gRPC-C++/include/grpcpp/support/status.h  |    24 +
 .../include/grpcpp/support/status_code_enum.h |    24 +
 .../include/grpcpp/support/string_ref.h       |    24 +
 .../include/grpcpp/support/stub_options.h     |    24 +
 .../include/grpcpp/support/sync_stream.h      |    24 +
 .../include/grpcpp/support/sync_stream_impl.h |    24 +
 .../gRPC-C++/include/grpcpp/support/time.h    |    24 +
 .../grpcpp/support/validate_service_config.h  |    36 +
 .../filters/client_channel/backend_metric.h   |    36 +
 .../filters/client_channel/backup_poller.h    |    41 +
 .../filters/client_channel/client_channel.h   |    82 +
 .../client_channel/client_channel_channelz.h  |    78 +
 .../client_channel/client_channel_factory.h   |    47 +
 .../ext/filters/client_channel/connector.h    |    79 +
 .../client_channel/global_subchannel_pool.h   |    68 +
 .../health/health_check_client.h              |   175 +
 .../client_channel/http_connect_handshaker.h  |    34 +
 .../ext/filters/client_channel/http_proxy.h   |    28 +
 .../ext/filters/client_channel/lb_policy.h    |   412 +
 .../lb_policy/child_policy_handler.h          |    83 +
 .../grpclb/client_load_reporting_filter.h     |    29 +
 .../client_channel/lb_policy/grpclb/grpclb.h  |    43 +
 .../lb_policy/grpclb/grpclb_channel.h         |    45 +
 .../lb_policy/grpclb/grpclb_client_stats.h    |    74 +
 .../lb_policy/grpclb/load_balancer_api.h      |    78 +
 .../lb_policy/subchannel_list.h               |   454 +
 .../client_channel/lb_policy/xds/xds.h        |    33 +
 .../client_channel/lb_policy_factory.h        |    47 +
 .../client_channel/lb_policy_registry.h       |    65 +
 .../client_channel/local_subchannel_pool.h    |    56 +
 .../filters/client_channel/parse_address.h    |    53 +
 .../ext/filters/client_channel/proxy_mapper.h |    54 +
 .../client_channel/proxy_mapper_registry.h    |    50 +
 .../ext/filters/client_channel/resolver.h     |   146 +
 .../resolver/dns/c_ares/grpc_ares_ev_driver.h |   103 +
 .../resolver/dns/c_ares/grpc_ares_wrapper.h   |    95 +
 .../resolver/dns/dns_resolver_selection.h     |    29 +
 .../resolver/fake/fake_resolver.h             |    97 +
 .../filters/client_channel/resolver_factory.h |    73 +
 .../client_channel/resolver_registry.h        |    89 +
 .../client_channel/resolver_result_parsing.h  |   124 +
 .../client_channel/resolving_lb_policy.h      |   122 +
 .../filters/client_channel/retry_throttle.h   |    77 +
 .../filters/client_channel/server_address.h   |    96 +
 .../filters/client_channel/service_config.h   |   193 +
 .../ext/filters/client_channel/subchannel.h   |   403 +
 .../client_channel/subchannel_interface.h     |    94 +
 .../subchannel_pool_interface.h               |    91 +
 .../ext/filters/client_channel/xds/xds_api.h  |   280 +
 .../client_channel/xds/xds_bootstrap.h        |    87 +
 .../filters/client_channel/xds/xds_channel.h  |    46 +
 .../client_channel/xds/xds_channel_args.h     |    26 +
 .../filters/client_channel/xds/xds_client.h   |   274 +
 .../client_channel/xds/xds_client_stats.h     |   199 +
 .../ext/filters/deadline/deadline_filter.h    |    90 +
 .../filters/http/client/http_client_filter.h  |    31 +
 .../filters/http/client_authority_filter.h    |    34 +
 .../message_compress_filter.h                 |    53 +
 .../filters/http/server/http_server_filter.h  |    29 +
 .../core/ext/filters/max_age/max_age_filter.h |    26 +
 .../message_size/message_size_filter.h        |    59 +
 .../workaround_cronet_compression_filter.h    |    27 +
 .../filters/workarounds/workaround_utils.h    |    39 +
 .../src/core/ext/transport/chttp2/alpn/alpn.h |    36 +
 .../ext/transport/chttp2/client/authority.h   |    36 +
 .../chttp2/client/chttp2_connector.h          |    58 +
 .../transport/chttp2/server/chttp2_server.h   |    33 +
 .../transport/chttp2/transport/bin_decoder.h  |    56 +
 .../transport/chttp2/transport/bin_encoder.h  |    42 +
 .../chttp2/transport/chttp2_transport.h       |    51 +
 .../transport/chttp2/transport/context_list.h |    53 +
 .../transport/chttp2/transport/flow_control.h |   474 +
 .../ext/transport/chttp2/transport/frame.h    |    47 +
 .../transport/chttp2/transport/frame_data.h   |    82 +
 .../transport/chttp2/transport/frame_goaway.h |    63 +
 .../transport/chttp2/transport/frame_ping.h   |    45 +
 .../chttp2/transport/frame_rst_stream.h       |    51 +
 .../chttp2/transport/frame_settings.h         |    61 +
 .../chttp2/transport/frame_window_update.h    |    45 +
 .../chttp2/transport/hpack_encoder.h          |   108 +
 .../transport/chttp2/transport/hpack_parser.h |   118 +
 .../transport/chttp2/transport/hpack_table.h  |   148 +
 .../chttp2/transport/http2_settings.h         |    62 +
 .../ext/transport/chttp2/transport/huffsyms.h |    33 +
 .../chttp2/transport/incoming_metadata.h      |    58 +
 .../ext/transport/chttp2/transport/internal.h |   871 +
 .../transport/chttp2/transport/stream_map.h   |    68 +
 .../ext/transport/chttp2/transport/varint.h   |    60 +
 .../ext/transport/inproc/inproc_transport.h   |    35 +
 .../envoy/annotations/deprecation.upb.h       |    54 +
 .../envoy/annotations/resource.upb.h          |    78 +
 .../envoy/api/v2/auth/cert.upb.h              |   929 +
 .../ext/upb-generated/envoy/api/v2/cds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/cluster.upb.h  |  1435 +
 .../api/v2/cluster/circuit_breaker.upb.h      |   242 +
 .../envoy/api/v2/cluster/filter.upb.h         |    93 +
 .../api/v2/cluster/outlier_detection.upb.h    |   329 +
 .../envoy/api/v2/core/address.upb.h           |   352 +
 .../envoy/api/v2/core/base.upb.h              |   871 +
 .../envoy/api/v2/core/config_source.upb.h     |   346 +
 .../envoy/api/v2/core/grpc_service.upb.h      |   666 +
 .../envoy/api/v2/core/health_check.upb.h      |   682 +
 .../envoy/api/v2/core/http_uri.upb.h          |   104 +
 .../envoy/api/v2/core/protocol.upb.h          |   460 +
 .../envoy/api/v2/discovery.upb.h              |   416 +
 .../ext/upb-generated/envoy/api/v2/eds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/endpoint.upb.h |   264 +
 .../envoy/api/v2/endpoint/endpoint.upb.h      |    61 +
 .../api/v2/endpoint/endpoint_components.upb.h |   282 +
 .../envoy/api/v2/endpoint/load_report.upb.h   |   348 +
 .../ext/upb-generated/envoy/api/v2/lds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/listener.upb.h |   407 +
 .../envoy/api/v2/listener/listener.upb.h      |    61 +
 .../api/v2/listener/listener_components.upb.h |   551 +
 .../api/v2/listener/udp_listener_config.upb.h |   136 +
 .../ext/upb-generated/envoy/api/v2/rds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/route.upb.h    |   223 +
 .../envoy/api/v2/route/route.upb.h            |    61 +
 .../envoy/api/v2/route/route_components.upb.h |  2960 ++
 .../envoy/api/v2/scoped_route.upb.h           |   158 +
 .../ext/upb-generated/envoy/api/v2/srds.upb.h |    81 +
 .../filter/accesslog/v2/accesslog.upb.h       |   749 +
 .../v2/http_connection_manager.upb.h          |  1096 +
 .../config/listener/v2/api_listener.upb.h     |    89 +
 .../envoy/service/discovery/v2/ads.upb.h      |    74 +
 .../envoy/service/load_stats/v2/lrs.upb.h     |   154 +
 .../ext/upb-generated/envoy/type/http.upb.h   |    60 +
 .../envoy/type/matcher/regex.upb.h            |   132 +
 .../envoy/type/matcher/string.upb.h           |   157 +
 .../envoy/type/metadata/v2/metadata.upb.h     |   282 +
 .../upb-generated/envoy/type/percent.upb.h    |   111 +
 .../ext/upb-generated/envoy/type/range.upb.h  |   136 +
 .../envoy/type/semantic_version.upb.h         |    86 +
 .../envoy/type/tracing/v2/custom_tag.upb.h    |   273 +
 .../ext/upb-generated/gogoproto/gogo.upb.h    |    54 +
 .../google/api/annotations.upb.h              |    54 +
 .../ext/upb-generated/google/api/http.upb.h   |   214 +
 .../upb-generated/google/protobuf/any.upb.h   |    82 +
 .../google/protobuf/descriptor.upb.h          |  1714 ++
 .../google/protobuf/duration.upb.h            |    82 +
 .../upb-generated/google/protobuf/empty.upb.h |    74 +
 .../google/protobuf/struct.upb.h              |   239 +
 .../google/protobuf/timestamp.upb.h           |    82 +
 .../google/protobuf/wrappers.upb.h            |   262 +
 .../ext/upb-generated/google/rpc/status.upb.h |    98 +
 .../src/proto/grpc/gcp/altscontext.upb.h      |   150 +
 .../src/proto/grpc/gcp/handshaker.upb.h       |   717 +
 .../grpc/gcp/transport_security_common.upb.h  |   133 +
 .../src/proto/grpc/health/v1/health.upb.h     |   108 +
 .../src/proto/grpc/lb/v1/load_balancer.upb.h  |   417 +
 .../udpa/annotations/migrate.upb.h            |   128 +
 .../udpa/annotations/sensitive.upb.h          |    54 +
 .../udpa/data/orca/v1/orca_load_report.upb.h  |   168 +
 .../ext/upb-generated/validate/validate.upb.h |  2091 ++
 .../Pods/gRPC-C++/src/core/lib/avl/avl.h      |    94 +
 .../gRPC-C++/src/core/lib/backoff/backoff.h   |    89 +
 .../src/core/lib/channel/channel_args.h       |   133 +
 .../src/core/lib/channel/channel_stack.h      |   297 +
 .../core/lib/channel/channel_stack_builder.h  |   166 +
 .../src/core/lib/channel/channel_trace.h      |   134 +
 .../gRPC-C++/src/core/lib/channel/channelz.h  |   333 +
 .../src/core/lib/channel/channelz_registry.h  |    97 +
 .../src/core/lib/channel/connected_channel.h  |    34 +
 .../gRPC-C++/src/core/lib/channel/context.h   |    49 +
 .../src/core/lib/channel/handshaker.h         |   177 +
 .../src/core/lib/channel/handshaker_factory.h |    42 +
 .../core/lib/channel/handshaker_registry.h    |    54 +
 .../src/core/lib/channel/status_util.h        |    58 +
 .../core/lib/compression/algorithm_metadata.h |    61 +
 .../core/lib/compression/compression_args.h   |    56 +
 .../lib/compression/compression_internal.h    |    96 +
 .../core/lib/compression/message_compress.h   |    40 +
 .../core/lib/compression/stream_compression.h |   116 +
 .../lib/compression/stream_compression_gzip.h |    28 +
 .../compression/stream_compression_identity.h |    29 +
 .../Pods/gRPC-C++/src/core/lib/debug/stats.h  |    68 +
 .../gRPC-C++/src/core/lib/debug/stats_data.h  |   555 +
 .../Pods/gRPC-C++/src/core/lib/debug/trace.h  |   131 +
 .../Pods/gRPC-C++/src/core/lib/gpr/alloc.h    |    28 +
 .../Pods/gRPC-C++/src/core/lib/gpr/arena.h    |    47 +
 .../Pods/gRPC-C++/src/core/lib/gpr/env.h      |    40 +
 .../gRPC-C++/src/core/lib/gpr/murmur_hash.h   |    29 +
 .../Pods/gRPC-C++/src/core/lib/gpr/spinlock.h |    46 +
 .../Pods/gRPC-C++/src/core/lib/gpr/string.h   |   127 +
 .../src/core/lib/gpr/string_windows.h         |    32 +
 .../gRPC-C++/src/core/lib/gpr/time_precise.h  |    66 +
 .../Pods/gRPC-C++/src/core/lib/gpr/tls.h      |    68 +
 .../Pods/gRPC-C++/src/core/lib/gpr/tls_gcc.h  |    52 +
 .../Pods/gRPC-C++/src/core/lib/gpr/tls_msvc.h |    52 +
 .../gRPC-C++/src/core/lib/gpr/tls_pthread.h   |    56 +
 .../Pods/gRPC-C++/src/core/lib/gpr/tmpfile.h  |    32 +
 .../Pods/gRPC-C++/src/core/lib/gpr/useful.h   |    65 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/arena.h  |   120 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/atomic.h |   104 +
 .../src/core/lib/gprpp/debug_location.h       |    53 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/fork.h   |   103 +
 .../src/core/lib/gprpp/global_config.h        |    96 +
 .../src/core/lib/gprpp/global_config_custom.h |    29 +
 .../src/core/lib/gprpp/global_config_env.h    |   131 +
 .../core/lib/gprpp/global_config_generic.h    |    44 +
 .../gRPC-C++/src/core/lib/gprpp/host_port.h   |    59 +
 .../src/core/lib/gprpp/inlined_vector.h       |    37 +
 .../src/core/lib/gprpp/manual_constructor.h   |   213 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/map.h    |    59 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/memory.h |    51 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/mpscq.h  |    98 +
 .../gRPC-C++/src/core/lib/gprpp/optional.h    |    33 +
 .../gRPC-C++/src/core/lib/gprpp/orphanable.h  |   129 +
 .../gRPC-C++/src/core/lib/gprpp/ref_counted.h |   312 +
 .../src/core/lib/gprpp/ref_counted_ptr.h      |   187 +
 .../gRPC-C++/src/core/lib/gprpp/string_view.h |    60 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/sync.h   |   135 +
 .../Pods/gRPC-C++/src/core/lib/gprpp/thd.h    |   174 +
 .../src/core/lib/http/format_request.h        |    34 +
 .../Pods/gRPC-C++/src/core/lib/http/httpcli.h |   127 +
 .../Pods/gRPC-C++/src/core/lib/http/parser.h  |   114 +
 .../src/core/lib/iomgr/block_annotate.h       |    57 +
 .../gRPC-C++/src/core/lib/iomgr/buffer_list.h |   164 +
 .../src/core/lib/iomgr/call_combiner.h        |   216 +
 .../src/core/lib/iomgr/cfstream_handle.h      |    90 +
 .../gRPC-C++/src/core/lib/iomgr/closure.h     |   256 +
 .../gRPC-C++/src/core/lib/iomgr/combiner.h    |    88 +
 .../src/core/lib/iomgr/dynamic_annotations.h  |    67 +
 .../gRPC-C++/src/core/lib/iomgr/endpoint.h    |   106 +
 .../src/core/lib/iomgr/endpoint_cfstream.h    |    49 +
 .../src/core/lib/iomgr/endpoint_pair.h        |    34 +
 .../Pods/gRPC-C++/src/core/lib/iomgr/error.h  |   277 +
 .../src/core/lib/iomgr/error_cfstream.h       |    31 +
 .../src/core/lib/iomgr/error_internal.h       |    61 +
 .../src/core/lib/iomgr/ev_epoll1_linux.h      |    31 +
 .../src/core/lib/iomgr/ev_epollex_linux.h     |    30 +
 .../src/core/lib/iomgr/ev_poll_posix.h        |    29 +
 .../gRPC-C++/src/core/lib/iomgr/ev_posix.h    |   207 +
 .../gRPC-C++/src/core/lib/iomgr/exec_ctx.h    |   368 +
 .../gRPC-C++/src/core/lib/iomgr/executor.h    |   122 +
 .../src/core/lib/iomgr/executor/mpmcqueue.h   |   175 +
 .../src/core/lib/iomgr/executor/threadpool.h  |   149 +
 .../gRPC-C++/src/core/lib/iomgr/gethostname.h |    26 +
 .../src/core/lib/iomgr/grpc_if_nametoindex.h  |    30 +
 .../src/core/lib/iomgr/internal_errqueue.h    |   191 +
 .../src/core/lib/iomgr/iocp_windows.h         |    48 +
 .../Pods/gRPC-C++/src/core/lib/iomgr/iomgr.h  |    60 +
 .../src/core/lib/iomgr/iomgr_custom.h         |    49 +
 .../src/core/lib/iomgr/iomgr_internal.h       |    73 +
 .../gRPC-C++/src/core/lib/iomgr/iomgr_posix.h |    26 +
 .../lib/iomgr/is_epollexclusive_available.h   |    36 +
 .../gRPC-C++/src/core/lib/iomgr/load_file.h   |    35 +
 .../src/core/lib/iomgr/lockfree_event.h       |    72 +
 .../gRPC-C++/src/core/lib/iomgr/nameser.h     |   106 +
 .../lib/iomgr/poller/eventmanager_libuv.h     |    88 +
 .../src/core/lib/iomgr/polling_entity.h       |    68 +
 .../gRPC-C++/src/core/lib/iomgr/pollset.h     |    99 +
 .../src/core/lib/iomgr/pollset_custom.h       |    35 +
 .../gRPC-C++/src/core/lib/iomgr/pollset_set.h |    55 +
 .../src/core/lib/iomgr/pollset_set_custom.h   |    26 +
 .../src/core/lib/iomgr/pollset_set_windows.h  |    26 +
 .../src/core/lib/iomgr/pollset_windows.h      |    70 +
 .../Pods/gRPC-C++/src/core/lib/iomgr/port.h   |   243 +
 .../src/core/lib/iomgr/resolve_address.h      |    83 +
 .../core/lib/iomgr/resolve_address_custom.h   |    43 +
 .../src/core/lib/iomgr/resource_quota.h       |   177 +
 .../gRPC-C++/src/core/lib/iomgr/sockaddr.h    |    32 +
 .../src/core/lib/iomgr/sockaddr_custom.h      |    54 +
 .../src/core/lib/iomgr/sockaddr_posix.h       |    55 +
 .../src/core/lib/iomgr/sockaddr_utils.h       |    84 +
 .../src/core/lib/iomgr/sockaddr_windows.h     |    55 +
 .../src/core/lib/iomgr/socket_factory_posix.h |    69 +
 .../src/core/lib/iomgr/socket_mutator.h       |    61 +
 .../src/core/lib/iomgr/socket_utils.h         |    47 +
 .../src/core/lib/iomgr/socket_utils_posix.h   |   160 +
 .../src/core/lib/iomgr/socket_windows.h       |   127 +
 .../src/core/lib/iomgr/sys_epoll_wrapper.h    |    30 +
 .../gRPC-C++/src/core/lib/iomgr/tcp_client.h  |    52 +
 .../src/core/lib/iomgr/tcp_client_posix.h     |    68 +
 .../gRPC-C++/src/core/lib/iomgr/tcp_custom.h  |    84 +
 .../gRPC-C++/src/core/lib/iomgr/tcp_posix.h   |    60 +
 .../gRPC-C++/src/core/lib/iomgr/tcp_server.h  |   143 +
 .../core/lib/iomgr/tcp_server_utils_posix.h   |   125 +
 .../gRPC-C++/src/core/lib/iomgr/tcp_windows.h |    53 +
 .../src/core/lib/iomgr/time_averaged_stats.h  |    73 +
 .../Pods/gRPC-C++/src/core/lib/iomgr/timer.h  |   127 +
 .../src/core/lib/iomgr/timer_custom.h         |    43 +
 .../gRPC-C++/src/core/lib/iomgr/timer_heap.h  |    44 +
 .../src/core/lib/iomgr/timer_manager.h        |    41 +
 .../gRPC-C++/src/core/lib/iomgr/udp_server.h  |   101 +
 .../src/core/lib/iomgr/unix_sockets_posix.h   |    43 +
 .../src/core/lib/iomgr/wakeup_fd_pipe.h       |    28 +
 .../src/core/lib/iomgr/wakeup_fd_posix.h      |    96 +
 .../src/core/lib/iomgr/work_serializer.h      |    65 +
 .../Pods/gRPC-C++/src/core/lib/json/json.h    |   239 +
 .../gRPC-C++/src/core/lib/profiling/timers.h  |    94 +
 .../lib/security/context/security_context.h   |   150 +
 .../credentials/alts/alts_credentials.h       |   109 +
 .../credentials/alts/check_gcp_environment.h  |    57 +
 .../alts/grpc_alts_credentials_options.h      |    75 +
 .../composite/composite_credentials.h         |   103 +
 .../lib/security/credentials/credentials.h    |   334 +
 .../credentials/fake/fake_credentials.h       |    83 +
 .../google_default_credentials.h              |    87 +
 .../credentials/iam/iam_credentials.h         |    45 +
 .../lib/security/credentials/jwt/json_token.h |    82 +
 .../credentials/jwt/jwt_credentials.h         |    68 +
 .../security/credentials/jwt/jwt_verifier.h   |   123 +
 .../credentials/local/local_credentials.h     |    61 +
 .../credentials/oauth2/oauth2_credentials.h   |   165 +
 .../credentials/plugin/plugin_credentials.h   |    70 +
 .../credentials/ssl/ssl_credentials.h         |    99 +
 .../tls/grpc_tls_credentials_options.h        |   286 +
 .../credentials/tls/tls_credentials.h         |    62 +
 .../alts/alts_security_connector.h            |    76 +
 .../fake/fake_security_connector.h            |    45 +
 .../security_connector/load_system_roots.h    |    29 +
 .../load_system_roots_linux.h                 |    44 +
 .../local/local_security_connector.h          |    59 +
 .../security_connector/security_connector.h   |   176 +
 .../ssl/ssl_security_connector.h              |    79 +
 .../security/security_connector/ssl_utils.h   |   182 +
 .../security_connector/ssl_utils_config.h     |    30 +
 .../tls/tls_security_connector.h              |   161 +
 .../lib/security/transport/auth_filters.h     |    40 +
 .../lib/security/transport/secure_endpoint.h  |    41 +
 .../security/transport/security_handshaker.h  |    45 +
 .../transport/target_authority_table.h        |    40 +
 .../core/lib/security/transport/tsi_error.h   |    29 +
 .../src/core/lib/security/util/json_util.h    |    44 +
 .../Pods/gRPC-C++/src/core/lib/slice/b64.h    |    50 +
 .../src/core/lib/slice/percent_encoding.h     |    65 +
 .../src/core/lib/slice/slice_hash_table.h     |   199 +
 .../src/core/lib/slice/slice_internal.h       |   350 +
 .../src/core/lib/slice/slice_string_helpers.h |    49 +
 .../gRPC-C++/src/core/lib/slice/slice_utils.h |   191 +
 .../core/lib/slice/slice_weak_hash_table.h    |   102 +
 .../gRPC-C++/src/core/lib/surface/api_trace.h |    52 +
 .../Pods/gRPC-C++/src/core/lib/surface/call.h |   125 +
 .../src/core/lib/surface/call_test_only.h     |    43 +
 .../gRPC-C++/src/core/lib/surface/channel.h   |   127 +
 .../src/core/lib/surface/channel_init.h       |    78 +
 .../src/core/lib/surface/channel_stack_type.h |    47 +
 .../src/core/lib/surface/completion_queue.h   |    97 +
 .../lib/surface/completion_queue_factory.h    |    38 +
 .../src/core/lib/surface/event_string.h       |    29 +
 .../Pods/gRPC-C++/src/core/lib/surface/init.h |    27 +
 .../src/core/lib/surface/lame_client.h        |    28 +
 .../gRPC-C++/src/core/lib/surface/server.h    |    67 +
 .../src/core/lib/surface/validate_metadata.h  |    41 +
 .../src/core/lib/transport/bdp_estimator.h    |    94 +
 .../src/core/lib/transport/byte_stream.h      |   160 +
 .../core/lib/transport/connectivity_state.h   |   129 +
 .../src/core/lib/transport/error_utils.h      |    46 +
 .../src/core/lib/transport/http2_errors.h     |    41 +
 .../src/core/lib/transport/metadata.h         |   446 +
 .../src/core/lib/transport/metadata_batch.h   |   192 +
 .../src/core/lib/transport/pid_controller.h   |   116 +
 .../src/core/lib/transport/static_metadata.h  |   597 +
 .../core/lib/transport/status_conversion.h    |    38 +
 .../src/core/lib/transport/status_metadata.h  |    48 +
 .../src/core/lib/transport/timeout_encoding.h |    38 +
 .../src/core/lib/transport/transport.h        |   455 +
 .../src/core/lib/transport/transport_impl.h   |    71 +
 .../gRPC-C++/src/core/lib/uri/uri_parser.h    |    50 +
 .../gRPC-C++/src/core/tsi/alts/crypt/gsec.h   |   454 +
 .../tsi/alts/frame_protector/alts_counter.h   |    98 +
 .../tsi/alts/frame_protector/alts_crypter.h   |   255 +
 .../frame_protector/alts_frame_protector.h    |    55 +
 .../alts_record_protocol_crypter_common.h     |   114 +
 .../tsi/alts/frame_protector/frame_handler.h  |   236 +
 .../alts/handshaker/alts_handshaker_client.h  |   157 +
 .../alts/handshaker/alts_shared_resource.h    |    73 +
 .../tsi/alts/handshaker/alts_tsi_handshaker.h |   104 +
 .../handshaker/alts_tsi_handshaker_private.h  |    88 +
 .../core/tsi/alts/handshaker/alts_tsi_utils.h |    57 +
 .../transport_security_common_api.h           |   175 +
 ...alts_grpc_integrity_only_record_protocol.h |    54 +
 ...s_grpc_privacy_integrity_record_protocol.h |    49 +
 .../alts_grpc_record_protocol.h               |    91 +
 .../alts_grpc_record_protocol_common.h        |   100 +
 .../alts_iovec_record_protocol.h              |   199 +
 .../alts_zero_copy_grpc_protector.h           |    57 +
 .../src/core/tsi/fake_transport_security.h    |    47 +
 .../src/core/tsi/grpc_shadow_boringssl.h      |  3311 ++
 .../src/core/tsi/local_transport_security.h   |    51 +
 .../core/tsi/ssl/session_cache/ssl_session.h  |    77 +
 .../tsi/ssl/session_cache/ssl_session_cache.h |    96 +
 .../src/core/tsi/ssl_transport_security.h     |   357 +
 .../Pods/gRPC-C++/src/core/tsi/ssl_types.h    |    48 +
 .../src/core/tsi/transport_security.h         |   130 +
 .../src/core/tsi/transport_security_grpc.h    |    80 +
 .../core/tsi/transport_security_interface.h   |   476 +
 .../gRPC-C++/src/cpp/client/channel_cc.cc     |   257 +
 .../gRPC-C++/src/cpp/client/client_context.cc |   181 +
 .../src/cpp/client/client_interceptor.cc      |    44 +
 .../gRPC-C++/src/cpp/client/create_channel.cc |    85 +
 .../src/cpp/client/create_channel_internal.cc |    36 +
 .../src/cpp/client/create_channel_internal.h  |    40 +
 .../src/cpp/client/create_channel_posix.cc    |    78 +
 .../gRPC-C++/src/cpp/client/credentials_cc.cc |    33 +
 .../src/cpp/client/insecure_credentials.cc    |    62 +
 .../src/cpp/client/secure_credentials.cc      |   505 +
 .../src/cpp/client/secure_credentials.h       |   113 +
 .../gRPC-C++/src/cpp/codegen/codegen_init.cc  |    30 +
 .../Pods/gRPC-C++/src/cpp/common/alarm.cc     |   161 +
 .../src/cpp/common/auth_property_iterator.cc  |    70 +
 .../src/cpp/common/channel_arguments.cc       |   217 +
 .../gRPC-C++/src/cpp/common/channel_filter.cc |    98 +
 .../gRPC-C++/src/cpp/common/channel_filter.h  |   402 +
 .../src/cpp/common/completion_queue_cc.cc     |    99 +
 .../gRPC-C++/src/cpp/common/core_codegen.cc   |   240 +
 .../src/cpp/common/resource_quota_cc.cc       |    40 +
 .../gRPC-C++/src/cpp/common/rpc_method.cc     |    21 +
 .../src/cpp/common/secure_auth_context.cc     |    97 +
 .../src/cpp/common/secure_auth_context.h      |    60 +
 .../cpp/common/secure_channel_arguments.cc    |    39 +
 .../cpp/common/secure_create_auth_context.cc  |    36 +
 .../src/cpp/common/tls_credentials_options.cc |   326 +
 .../common/tls_credentials_options_util.cc    |   149 +
 .../cpp/common/tls_credentials_options_util.h |    58 +
 .../src/cpp/common/validate_service_config.cc |    40 +
 .../gRPC-C++/src/cpp/common/version_cc.cc     |    26 +
 .../src/cpp/server/async_generic_service.cc   |    33 +
 .../src/cpp/server/channel_argument_option.cc |    65 +
 .../cpp/server/create_default_thread_pool.cc  |    44 +
 .../src/cpp/server/dynamic_thread_pool.cc     |   124 +
 .../src/cpp/server/dynamic_thread_pool.h      |    68 +
 .../external_connection_acceptor_impl.cc      |    96 +
 .../external_connection_acceptor_impl.h       |    72 +
 .../health/default_health_check_service.cc    |   505 +
 .../health/default_health_check_service.h     |   285 +
 .../cpp/server/health/health_check_service.cc |    34 +
 ...lth_check_service_server_builder_option.cc |    35 +
 .../cpp/server/insecure_server_credentials.cc |    44 +
 .../cpp/server/secure_server_credentials.cc   |   157 +
 .../cpp/server/secure_server_credentials.h    |    88 +
 .../gRPC-C++/src/cpp/server/server_builder.cc |   449 +
 .../src/cpp/server/server_callback.cc         |    84 +
 .../Pods/gRPC-C++/src/cpp/server/server_cc.cc |  1433 +
 .../gRPC-C++/src/cpp/server/server_context.cc |   380 +
 .../src/cpp/server/server_credentials.cc      |    25 +
 .../gRPC-C++/src/cpp/server/server_posix.cc   |    33 +
 .../src/cpp/server/thread_pool_interface.h    |    43 +
 .../src/cpp/thread_manager/thread_manager.cc  |   263 +
 .../src/cpp/thread_manager/thread_manager.h   |   181 +
 .../gRPC-C++/src/cpp/util/byte_buffer_cc.cc   |    46 +
 .../Pods/gRPC-C++/src/cpp/util/status.cc      |    26 +
 .../Pods/gRPC-C++/src/cpp/util/string_ref.cc  |    25 +
 .../Pods/gRPC-C++/src/cpp/util/time_cc.cc     |    75 +
 .../gRPC-C++/third_party/upb/upb/decode.h     |    25 +
 .../gRPC-C++/third_party/upb/upb/encode.h     |    25 +
 .../third_party/upb/upb/generated_util.h      |   117 +
 .../Pods/gRPC-C++/third_party/upb/upb/msg.h   |    73 +
 .../gRPC-C++/third_party/upb/upb/port_def.inc |   150 +
 .../third_party/upb/upb/port_undef.inc        |    21 +
 .../gRPC-C++/third_party/upb/upb/table.int.h  |   519 +
 .../Pods/gRPC-C++/third_party/upb/upb/upb.h   |   372 +
 ChattingApp 000/Pods/gRPC-Core/LICENSE        |   202 +
 ChattingApp 000/Pods/gRPC-Core/README.md      |    85 +
 .../Pods/gRPC-Core/include/grpc/byte_buffer.h |    27 +
 .../include/grpc/byte_buffer_reader.h         |    26 +
 .../Pods/gRPC-Core/include/grpc/census.h      |    40 +
 .../Pods/gRPC-Core/include/grpc/compression.h |    75 +
 .../Pods/gRPC-Core/include/grpc/fork.h        |    26 +
 .../Pods/gRPC-Core/include/grpc/grpc.h        |   540 +
 .../Pods/gRPC-Core/include/grpc/grpc_posix.h  |    59 +
 .../gRPC-Core/include/grpc/grpc_security.h    |   998 +
 .../include/grpc/grpc_security_constants.h    |   145 +
 .../gRPC-Core/include/grpc/impl/codegen/atm.h |    95 +
 .../grpc/impl/codegen/atm_gcc_atomic.h        |    91 +
 .../include/grpc/impl/codegen/atm_gcc_sync.h  |    85 +
 .../include/grpc/impl/codegen/atm_windows.h   |   128 +
 .../include/grpc/impl/codegen/byte_buffer.h   |   101 +
 .../grpc/impl/codegen/byte_buffer_reader.h    |    42 +
 .../grpc/impl/codegen/compression_types.h     |   108 +
 .../grpc/impl/codegen/connectivity_state.h    |    44 +
 .../include/grpc/impl/codegen/fork.h          |    48 +
 .../include/grpc/impl/codegen/gpr_slice.h     |    69 +
 .../include/grpc/impl/codegen/gpr_types.h     |    59 +
 .../include/grpc/impl/codegen/grpc_types.h    |   787 +
 .../gRPC-Core/include/grpc/impl/codegen/log.h |   112 +
 .../include/grpc/impl/codegen/port_platform.h |   716 +
 .../grpc/impl/codegen/propagation_bits.h      |    52 +
 .../include/grpc/impl/codegen/slice.h         |   127 +
 .../include/grpc/impl/codegen/status.h        |   154 +
 .../include/grpc/impl/codegen/sync.h          |    65 +
 .../include/grpc/impl/codegen/sync_abseil.h   |    36 +
 .../include/grpc/impl/codegen/sync_custom.h   |    38 +
 .../include/grpc/impl/codegen/sync_generic.h  |    48 +
 .../include/grpc/impl/codegen/sync_posix.h    |    52 +
 .../include/grpc/impl/codegen/sync_windows.h  |    36 +
 .../gRPC-Core/include/grpc/load_reporting.h   |    48 +
 .../gRPC-Core/include/grpc/module.modulemap   |    79 +
 .../Pods/gRPC-Core/include/grpc/slice.h       |   172 +
 .../gRPC-Core/include/grpc/slice_buffer.h     |    84 +
 .../Pods/gRPC-Core/include/grpc/status.h      |    26 +
 .../gRPC-Core/include/grpc/support/alloc.h    |    52 +
 .../Pods/gRPC-Core/include/grpc/support/atm.h |    26 +
 .../include/grpc/support/atm_gcc_atomic.h     |    26 +
 .../include/grpc/support/atm_gcc_sync.h       |    26 +
 .../include/grpc/support/atm_windows.h        |    26 +
 .../Pods/gRPC-Core/include/grpc/support/cpu.h |    44 +
 .../Pods/gRPC-Core/include/grpc/support/log.h |    26 +
 .../include/grpc/support/log_windows.h        |    38 +
 .../include/grpc/support/port_platform.h      |    24 +
 .../include/grpc/support/string_util.h        |    51 +
 .../gRPC-Core/include/grpc/support/sync.h     |   282 +
 .../include/grpc/support/sync_abseil.h        |    26 +
 .../include/grpc/support/sync_custom.h        |    26 +
 .../include/grpc/support/sync_generic.h       |    26 +
 .../include/grpc/support/sync_posix.h         |    26 +
 .../include/grpc/support/sync_windows.h       |    26 +
 .../gRPC-Core/include/grpc/support/thd_id.h   |    44 +
 .../gRPC-Core/include/grpc/support/time.h     |    92 +
 .../include/grpc/support/workaround_list.h    |    31 +
 .../core/ext/filters/census/grpc_context.cc   |    38 +
 .../filters/client_channel/backend_metric.cc  |    82 +
 .../filters/client_channel/backend_metric.h   |    36 +
 .../filters/client_channel/backup_poller.cc   |   181 +
 .../filters/client_channel/backup_poller.h    |    41 +
 .../client_channel/channel_connectivity.cc    |   264 +
 .../filters/client_channel/client_channel.cc  |  4088 +++
 .../filters/client_channel/client_channel.h   |    82 +
 .../client_channel/client_channel_channelz.cc |    95 +
 .../client_channel/client_channel_channelz.h  |    78 +
 .../client_channel/client_channel_factory.cc  |    55 +
 .../client_channel/client_channel_factory.h   |    47 +
 .../client_channel/client_channel_plugin.cc   |    69 +
 .../ext/filters/client_channel/connector.h    |    79 +
 .../client_channel/global_subchannel_pool.cc  |   179 +
 .../client_channel/global_subchannel_pool.h   |    68 +
 .../health/health_check_client.cc             |   625 +
 .../health/health_check_client.h              |   175 +
 .../client_channel/http_connect_handshaker.cc |   389 +
 .../client_channel/http_connect_handshaker.h  |    34 +
 .../ext/filters/client_channel/http_proxy.cc  |   209 +
 .../ext/filters/client_channel/http_proxy.h   |    28 +
 .../ext/filters/client_channel/lb_policy.cc   |   137 +
 .../ext/filters/client_channel/lb_policy.h    |   412 +
 .../lb_policy/child_policy_handler.cc         |   291 +
 .../lb_policy/child_policy_handler.h          |    83 +
 .../grpclb/client_load_reporting_filter.cc    |   157 +
 .../grpclb/client_load_reporting_filter.h     |    29 +
 .../client_channel/lb_policy/grpclb/grpclb.cc |  1815 ++
 .../client_channel/lb_policy/grpclb/grpclb.h  |    43 +
 .../lb_policy/grpclb/grpclb_channel.h         |    45 +
 .../lb_policy/grpclb/grpclb_channel_secure.cc |   119 +
 .../lb_policy/grpclb/grpclb_client_stats.cc   |    91 +
 .../lb_policy/grpclb/grpclb_client_stats.h    |    74 +
 .../lb_policy/grpclb/load_balancer_api.cc     |   201 +
 .../lb_policy/grpclb/load_balancer_api.h      |    78 +
 .../lb_policy/pick_first/pick_first.cc        |   509 +
 .../lb_policy/round_robin/round_robin.cc      |   504 +
 .../lb_policy/subchannel_list.h               |   454 +
 .../client_channel/lb_policy/xds/cds.cc       |   370 +
 .../client_channel/lb_policy/xds/xds.cc       |  1754 ++
 .../client_channel/lb_policy/xds/xds.h        |    33 +
 .../client_channel/lb_policy_factory.h        |    47 +
 .../client_channel/lb_policy_registry.cc      |   178 +
 .../client_channel/lb_policy_registry.h       |    65 +
 .../client_channel/local_subchannel_pool.cc   |    96 +
 .../client_channel/local_subchannel_pool.h    |    56 +
 .../filters/client_channel/parse_address.cc   |   237 +
 .../filters/client_channel/parse_address.h    |    53 +
 .../ext/filters/client_channel/proxy_mapper.h |    54 +
 .../client_channel/proxy_mapper_registry.cc   |    89 +
 .../client_channel/proxy_mapper_registry.h    |    50 +
 .../ext/filters/client_channel/resolver.cc    |    88 +
 .../ext/filters/client_channel/resolver.h     |   146 +
 .../resolver/dns/c_ares/dns_resolver_ares.cc  |   521 +
 .../dns/c_ares/grpc_ares_ev_driver.cc         |   484 +
 .../resolver/dns/c_ares/grpc_ares_ev_driver.h |   103 +
 .../dns/c_ares/grpc_ares_ev_driver_libuv.cc   |   181 +
 .../dns/c_ares/grpc_ares_ev_driver_posix.cc   |   107 +
 .../dns/c_ares/grpc_ares_ev_driver_windows.cc |   942 +
 .../resolver/dns/c_ares/grpc_ares_wrapper.cc  |   768 +
 .../resolver/dns/c_ares/grpc_ares_wrapper.h   |    95 +
 .../dns/c_ares/grpc_ares_wrapper_fallback.cc  |    65 +
 .../dns/c_ares/grpc_ares_wrapper_libuv.cc     |    38 +
 .../dns/c_ares/grpc_ares_wrapper_posix.cc     |    29 +
 .../dns/c_ares/grpc_ares_wrapper_windows.cc   |    34 +
 .../resolver/dns/dns_resolver_selection.cc    |    28 +
 .../resolver/dns/dns_resolver_selection.h     |    29 +
 .../resolver/dns/native/dns_resolver.cc       |   321 +
 .../resolver/fake/fake_resolver.cc            |   392 +
 .../resolver/fake/fake_resolver.h             |    97 +
 .../resolver/sockaddr/sockaddr_resolver.cc    |   188 +
 .../resolver/xds/xds_resolver.cc              |   157 +
 .../filters/client_channel/resolver_factory.h |    73 +
 .../client_channel/resolver_registry.cc       |   194 +
 .../client_channel/resolver_registry.h        |    89 +
 .../client_channel/resolver_result_parsing.cc |   443 +
 .../client_channel/resolver_result_parsing.h  |   124 +
 .../client_channel/resolving_lb_policy.cc     |   359 +
 .../client_channel/resolving_lb_policy.h      |   122 +
 .../filters/client_channel/retry_throttle.cc  |   191 +
 .../filters/client_channel/retry_throttle.h   |    77 +
 .../filters/client_channel/server_address.cc  |    51 +
 .../filters/client_channel/server_address.h   |    96 +
 .../filters/client_channel/service_config.cc  |   261 +
 .../filters/client_channel/service_config.h   |   193 +
 .../ext/filters/client_channel/subchannel.cc  |  1097 +
 .../ext/filters/client_channel/subchannel.h   |   403 +
 .../client_channel/subchannel_interface.h     |    94 +
 .../subchannel_pool_interface.cc              |    97 +
 .../subchannel_pool_interface.h               |    91 +
 .../ext/filters/client_channel/xds/xds_api.cc |  1867 ++
 .../ext/filters/client_channel/xds/xds_api.h  |   280 +
 .../client_channel/xds/xds_bootstrap.cc       |   347 +
 .../client_channel/xds/xds_bootstrap.h        |    87 +
 .../filters/client_channel/xds/xds_channel.h  |    46 +
 .../client_channel/xds/xds_channel_args.h     |    26 +
 .../client_channel/xds/xds_channel_secure.cc  |   104 +
 .../filters/client_channel/xds/xds_client.cc  |  2174 ++
 .../filters/client_channel/xds/xds_client.h   |   274 +
 .../client_channel/xds/xds_client_stats.cc    |   116 +
 .../client_channel/xds/xds_client_stats.h     |   199 +
 .../filters/client_idle/client_idle_filter.cc |   440 +
 .../ext/filters/deadline/deadline_filter.cc   |   386 +
 .../ext/filters/deadline/deadline_filter.h    |    90 +
 .../filters/http/client/http_client_filter.cc |   601 +
 .../filters/http/client/http_client_filter.h  |    31 +
 .../filters/http/client_authority_filter.cc   |   159 +
 .../filters/http/client_authority_filter.h    |    34 +
 .../ext/filters/http/http_filters_plugin.cc   |    89 +
 .../message_compress_filter.cc                |   509 +
 .../message_compress_filter.h                 |    53 +
 .../filters/http/server/http_server_filter.cc |   528 +
 .../filters/http/server/http_server_filter.h  |    29 +
 .../ext/filters/max_age/max_age_filter.cc     |   556 +
 .../core/ext/filters/max_age/max_age_filter.h |    26 +
 .../message_size/message_size_filter.cc       |   426 +
 .../message_size/message_size_filter.h        |    59 +
 .../workaround_cronet_compression_filter.cc   |   210 +
 .../workaround_cronet_compression_filter.h    |    27 +
 .../filters/workarounds/workaround_utils.cc   |    53 +
 .../filters/workarounds/workaround_utils.h    |    39 +
 .../core/ext/transport/chttp2/alpn/alpn.cc    |    44 +
 .../src/core/ext/transport/chttp2/alpn/alpn.h |    36 +
 .../ext/transport/chttp2/client/authority.cc  |    42 +
 .../ext/transport/chttp2/client/authority.h   |    36 +
 .../chttp2/client/chttp2_connector.cc         |   206 +
 .../chttp2/client/chttp2_connector.h          |    58 +
 .../chttp2/client/insecure/channel_create.cc  |   112 +
 .../client/insecure/channel_create_posix.cc   |    79 +
 .../client/secure/secure_channel_create.cc    |   225 +
 .../transport/chttp2/server/chttp2_server.cc  |   451 +
 .../transport/chttp2/server/chttp2_server.h   |    33 +
 .../chttp2/server/insecure/server_chttp2.cc   |    45 +
 .../server/insecure/server_chttp2_posix.cc    |    75 +
 .../server/secure/server_secure_chttp2.cc     |    86 +
 .../transport/chttp2/transport/bin_decoder.cc |   250 +
 .../transport/chttp2/transport/bin_decoder.h  |    56 +
 .../transport/chttp2/transport/bin_encoder.cc |   232 +
 .../transport/chttp2/transport/bin_encoder.h  |    42 +
 .../chttp2/transport/chttp2_plugin.cc         |    37 +
 .../chttp2/transport/chttp2_transport.cc      |  3345 ++
 .../chttp2/transport/chttp2_transport.h       |    51 +
 .../chttp2/transport/context_list.cc          |    69 +
 .../transport/chttp2/transport/context_list.h |    53 +
 .../chttp2/transport/flow_control.cc          |   408 +
 .../transport/chttp2/transport/flow_control.h |   474 +
 .../ext/transport/chttp2/transport/frame.h    |    47 +
 .../transport/chttp2/transport/frame_data.cc  |   307 +
 .../transport/chttp2/transport/frame_data.h   |    82 +
 .../chttp2/transport/frame_goaway.cc          |   187 +
 .../transport/chttp2/transport/frame_goaway.h |    63 +
 .../transport/chttp2/transport/frame_ping.cc  |   133 +
 .../transport/chttp2/transport/frame_ping.h   |    45 +
 .../chttp2/transport/frame_rst_stream.cc      |   122 +
 .../chttp2/transport/frame_rst_stream.h       |    51 +
 .../chttp2/transport/frame_settings.cc        |   242 +
 .../chttp2/transport/frame_settings.h         |    61 +
 .../chttp2/transport/frame_window_update.cc   |   123 +
 .../chttp2/transport/frame_window_update.h    |    45 +
 .../chttp2/transport/hpack_encoder.cc         |   887 +
 .../chttp2/transport/hpack_encoder.h          |   108 +
 .../chttp2/transport/hpack_parser.cc          |  1761 ++
 .../transport/chttp2/transport/hpack_parser.h |   118 +
 .../transport/chttp2/transport/hpack_table.cc |   246 +
 .../transport/chttp2/transport/hpack_table.h  |   148 +
 .../chttp2/transport/http2_settings.cc        |    62 +
 .../chttp2/transport/http2_settings.h         |    62 +
 .../transport/chttp2/transport/huffsyms.cc    |    92 +
 .../ext/transport/chttp2/transport/huffsyms.h |    33 +
 .../chttp2/transport/incoming_metadata.cc     |    66 +
 .../chttp2/transport/incoming_metadata.h      |    58 +
 .../ext/transport/chttp2/transport/internal.h |   871 +
 .../ext/transport/chttp2/transport/parsing.cc |   803 +
 .../chttp2/transport/stream_lists.cc          |   216 +
 .../transport/chttp2/transport/stream_map.cc  |   177 +
 .../transport/chttp2/transport/stream_map.h   |    68 +
 .../ext/transport/chttp2/transport/varint.cc  |    56 +
 .../ext/transport/chttp2/transport/varint.h   |    60 +
 .../ext/transport/chttp2/transport/writing.cc |   699 +
 .../ext/transport/inproc/inproc_plugin.cc     |    28 +
 .../ext/transport/inproc/inproc_transport.cc  |  1277 +
 .../ext/transport/inproc/inproc_transport.h   |    35 +
 .../envoy/annotations/deprecation.upb.c       |    37 +
 .../envoy/annotations/deprecation.upb.h       |    54 +
 .../envoy/annotations/resource.upb.c          |    47 +
 .../envoy/annotations/resource.upb.h          |    78 +
 .../envoy/api/v2/auth/cert.upb.c              |   302 +
 .../envoy/api/v2/auth/cert.upb.h              |   929 +
 .../ext/upb-generated/envoy/api/v2/cds.upb.c  |    63 +
 .../ext/upb-generated/envoy/api/v2/cds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/cluster.upb.c  |   478 +
 .../upb-generated/envoy/api/v2/cluster.upb.h  |  1435 +
 .../api/v2/cluster/circuit_breaker.upb.c      |   109 +
 .../api/v2/cluster/circuit_breaker.upb.h      |   242 +
 .../envoy/api/v2/cluster/filter.upb.c         |    62 +
 .../envoy/api/v2/cluster/filter.upb.h         |    93 +
 .../api/v2/cluster/outlier_detection.upb.c    |    86 +
 .../api/v2/cluster/outlier_detection.upb.h    |   329 +
 .../envoy/api/v2/core/address.upb.c           |   143 +
 .../envoy/api/v2/core/address.upb.h           |   352 +
 .../envoy/api/v2/core/base.upb.c              |   340 +
 .../envoy/api/v2/core/base.upb.h              |   871 +
 .../envoy/api/v2/core/config_source.upb.c     |   135 +
 .../envoy/api/v2/core/config_source.upb.h     |   346 +
 .../envoy/api/v2/core/grpc_service.upb.c      |   244 +
 .../envoy/api/v2/core/grpc_service.upb.h      |   666 +
 .../envoy/api/v2/core/health_check.upb.c      |   228 +
 .../envoy/api/v2/core/health_check.upb.h      |   682 +
 .../envoy/api/v2/core/http_uri.upb.c          |    63 +
 .../envoy/api/v2/core/http_uri.upb.h          |   104 +
 .../envoy/api/v2/core/protocol.upb.c          |   164 +
 .../envoy/api/v2/core/protocol.upb.h          |   460 +
 .../envoy/api/v2/discovery.upb.c              |   160 +
 .../envoy/api/v2/discovery.upb.h              |   416 +
 .../ext/upb-generated/envoy/api/v2/eds.upb.c  |    78 +
 .../ext/upb-generated/envoy/api/v2/eds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/endpoint.upb.c |   135 +
 .../upb-generated/envoy/api/v2/endpoint.upb.h |   264 +
 .../envoy/api/v2/endpoint/endpoint.upb.c      |    37 +
 .../envoy/api/v2/endpoint/endpoint.upb.h      |    61 +
 .../api/v2/endpoint/endpoint_components.upb.c |   128 +
 .../api/v2/endpoint/endpoint_components.upb.h |   282 +
 .../envoy/api/v2/endpoint/load_report.upb.c   |   151 +
 .../envoy/api/v2/endpoint/load_report.upb.h   |   348 +
 .../ext/upb-generated/envoy/api/v2/lds.upb.c  |    78 +
 .../ext/upb-generated/envoy/api/v2/lds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/listener.upb.c |   160 +
 .../upb-generated/envoy/api/v2/listener.upb.h |   407 +
 .../envoy/api/v2/listener/listener.upb.c      |    37 +
 .../envoy/api/v2/listener/listener.upb.h      |    61 +
 .../api/v2/listener/listener_components.upb.c |   196 +
 .../api/v2/listener/listener_components.upb.h |   551 +
 .../api/v2/listener/udp_listener_config.upb.c |    70 +
 .../api/v2/listener/udp_listener_config.upb.h |   136 +
 .../ext/upb-generated/envoy/api/v2/rds.upb.c  |    73 +
 .../ext/upb-generated/envoy/api/v2/rds.upb.h  |    81 +
 .../upb-generated/envoy/api/v2/route.upb.c    |   102 +
 .../upb-generated/envoy/api/v2/route.upb.h    |   223 +
 .../envoy/api/v2/route/route.upb.c            |    37 +
 .../envoy/api/v2/route/route.upb.h            |    61 +
 .../envoy/api/v2/route/route_components.upb.c |   861 +
 .../envoy/api/v2/route/route_components.upb.h |  2960 ++
 .../envoy/api/v2/scoped_route.upb.c           |    82 +
 .../envoy/api/v2/scoped_route.upb.h           |   158 +
 .../ext/upb-generated/envoy/api/v2/srds.upb.c |    63 +
 .../ext/upb-generated/envoy/api/v2/srds.upb.h |    81 +
 .../filter/accesslog/v2/accesslog.upb.c       |   271 +
 .../filter/accesslog/v2/accesslog.upb.h       |   749 +
 .../v2/http_connection_manager.upb.c          |   368 +
 .../v2/http_connection_manager.upb.h          |  1096 +
 .../config/listener/v2/api_listener.upb.c     |    56 +
 .../config/listener/v2/api_listener.upb.h     |    89 +
 .../envoy/service/discovery/v2/ads.upb.c      |    43 +
 .../envoy/service/discovery/v2/ads.upb.h      |    74 +
 .../envoy/service/load_stats/v2/lrs.upb.c     |    84 +
 .../envoy/service/load_stats/v2/lrs.upb.h     |   154 +
 .../ext/upb-generated/envoy/type/http.upb.c   |    32 +
 .../ext/upb-generated/envoy/type/http.upb.h   |    60 +
 .../envoy/type/matcher/regex.upb.c            |    71 +
 .../envoy/type/matcher/regex.upb.h            |   132 +
 .../envoy/type/matcher/string.upb.c           |    80 +
 .../envoy/type/matcher/string.upb.h           |   157 +
 .../envoy/type/metadata/v2/metadata.upb.c     |   111 +
 .../envoy/type/metadata/v2/metadata.upb.h     |   282 +
 .../upb-generated/envoy/type/percent.upb.c    |    58 +
 .../upb-generated/envoy/type/percent.upb.h    |   111 +
 .../ext/upb-generated/envoy/type/range.upb.c  |    65 +
 .../ext/upb-generated/envoy/type/range.upb.h  |   136 +
 .../envoy/type/semantic_version.upb.c         |    44 +
 .../envoy/type/semantic_version.upb.h         |    86 +
 .../envoy/type/tracing/v2/custom_tag.upb.c    |   112 +
 .../envoy/type/tracing/v2/custom_tag.upb.h    |   273 +
 .../ext/upb-generated/gogoproto/gogo.upb.c    |    37 +
 .../ext/upb-generated/gogoproto/gogo.upb.h    |    54 +
 .../google/api/annotations.upb.c              |    42 +
 .../google/api/annotations.upb.h              |    54 +
 .../ext/upb-generated/google/api/http.upb.c   |    82 +
 .../ext/upb-generated/google/api/http.upb.h   |   214 +
 .../upb-generated/google/protobuf/any.upb.c   |    43 +
 .../upb-generated/google/protobuf/any.upb.h   |    82 +
 .../google/protobuf/descriptor.upb.c          |   501 +
 .../google/protobuf/descriptor.upb.h          |  1714 ++
 .../google/protobuf/duration.upb.c            |    43 +
 .../google/protobuf/duration.upb.h            |    82 +
 .../upb-generated/google/protobuf/empty.upb.c |    38 +
 .../upb-generated/google/protobuf/empty.upb.h |    74 +
 .../google/protobuf/struct.upb.c              |    95 +
 .../google/protobuf/struct.upb.h              |   239 +
 .../google/protobuf/timestamp.upb.c           |    43 +
 .../google/protobuf/timestamp.upb.h           |    82 +
 .../google/protobuf/wrappers.upb.c            |   122 +
 .../google/protobuf/wrappers.upb.h            |   262 +
 .../ext/upb-generated/google/rpc/status.upb.c |    53 +
 .../ext/upb-generated/google/rpc/status.upb.h |    98 +
 .../src/proto/grpc/gcp/altscontext.upb.c      |    69 +
 .../src/proto/grpc/gcp/altscontext.upb.h      |   150 +
 .../src/proto/grpc/gcp/handshaker.upb.c       |   232 +
 .../src/proto/grpc/gcp/handshaker.upb.h       |   717 +
 .../grpc/gcp/transport_security_common.upb.c  |    58 +
 .../grpc/gcp/transport_security_common.upb.h  |   133 +
 .../src/proto/grpc/health/v1/health.upb.c     |    52 +
 .../src/proto/grpc/health/v1/health.upb.h     |   108 +
 .../src/proto/grpc/lb/v1/load_balancer.upb.c  |   165 +
 .../src/proto/grpc/lb/v1/load_balancer.upb.h  |   417 +
 .../udpa/annotations/migrate.upb.c            |    68 +
 .../udpa/annotations/migrate.upb.h            |   128 +
 .../udpa/annotations/sensitive.upb.c          |    37 +
 .../udpa/annotations/sensitive.upb.h          |    54 +
 .../udpa/data/orca/v1/orca_load_report.upb.c  |    78 +
 .../udpa/data/orca/v1/orca_load_report.upb.h  |   168 +
 .../ext/upb-generated/validate/validate.upb.c |   475 +
 .../ext/upb-generated/validate/validate.upb.h |  2091 ++
 .../Pods/gRPC-Core/src/core/lib/avl/avl.cc    |   306 +
 .../Pods/gRPC-Core/src/core/lib/avl/avl.h     |    94 +
 .../gRPC-Core/src/core/lib/backoff/backoff.cc |    78 +
 .../gRPC-Core/src/core/lib/backoff/backoff.h  |    89 +
 .../src/core/lib/channel/channel_args.cc      |   379 +
 .../src/core/lib/channel/channel_args.h       |   133 +
 .../src/core/lib/channel/channel_stack.cc     |   252 +
 .../src/core/lib/channel/channel_stack.h      |   297 +
 .../core/lib/channel/channel_stack_builder.cc |   323 +
 .../core/lib/channel/channel_stack_builder.h  |   166 +
 .../src/core/lib/channel/channel_trace.cc     |   194 +
 .../src/core/lib/channel/channel_trace.h      |   134 +
 .../src/core/lib/channel/channelz.cc          |   544 +
 .../gRPC-Core/src/core/lib/channel/channelz.h |   333 +
 .../src/core/lib/channel/channelz_registry.cc |   265 +
 .../src/core/lib/channel/channelz_registry.h  |    97 +
 .../src/core/lib/channel/connected_channel.cc |   244 +
 .../src/core/lib/channel/connected_channel.h  |    34 +
 .../gRPC-Core/src/core/lib/channel/context.h  |    49 +
 .../src/core/lib/channel/handshaker.cc        |   264 +
 .../src/core/lib/channel/handshaker.h         |   177 +
 .../src/core/lib/channel/handshaker_factory.h |    42 +
 .../core/lib/channel/handshaker_registry.cc   |   117 +
 .../core/lib/channel/handshaker_registry.h    |    54 +
 .../src/core/lib/channel/status_util.cc       |   100 +
 .../src/core/lib/channel/status_util.h        |    58 +
 .../core/lib/compression/algorithm_metadata.h |    61 +
 .../src/core/lib/compression/compression.cc   |   179 +
 .../core/lib/compression/compression_args.cc  |   134 +
 .../core/lib/compression/compression_args.h   |    56 +
 .../lib/compression/compression_internal.cc   |   280 +
 .../lib/compression/compression_internal.h    |    96 +
 .../core/lib/compression/message_compress.cc  |   188 +
 .../core/lib/compression/message_compress.h   |    40 +
 .../lib/compression/stream_compression.cc     |    80 +
 .../core/lib/compression/stream_compression.h |   116 +
 .../compression/stream_compression_gzip.cc    |   230 +
 .../lib/compression/stream_compression_gzip.h |    28 +
 .../stream_compression_identity.cc            |    92 +
 .../compression/stream_compression_identity.h |    29 +
 .../gRPC-Core/src/core/lib/debug/stats.cc     |   178 +
 .../Pods/gRPC-Core/src/core/lib/debug/stats.h |    68 +
 .../src/core/lib/debug/stats_data.cc          |   687 +
 .../gRPC-Core/src/core/lib/debug/stats_data.h |   555 +
 .../gRPC-Core/src/core/lib/debug/trace.cc     |   154 +
 .../Pods/gRPC-Core/src/core/lib/debug/trace.h |   131 +
 .../Pods/gRPC-Core/src/core/lib/gpr/alloc.cc  |    74 +
 .../Pods/gRPC-Core/src/core/lib/gpr/alloc.h   |    28 +
 .../Pods/gRPC-Core/src/core/lib/gpr/arena.h   |    47 +
 .../Pods/gRPC-Core/src/core/lib/gpr/atm.cc    |    35 +
 .../gRPC-Core/src/core/lib/gpr/cpu_iphone.cc  |    36 +
 .../gRPC-Core/src/core/lib/gpr/cpu_linux.cc   |    82 +
 .../gRPC-Core/src/core/lib/gpr/cpu_posix.cc   |    83 +
 .../gRPC-Core/src/core/lib/gpr/cpu_windows.cc |    33 +
 .../Pods/gRPC-Core/src/core/lib/gpr/env.h     |    40 +
 .../gRPC-Core/src/core/lib/gpr/env_linux.cc   |    76 +
 .../gRPC-Core/src/core/lib/gpr/env_posix.cc   |    47 +
 .../gRPC-Core/src/core/lib/gpr/env_windows.cc |    74 +
 .../Pods/gRPC-Core/src/core/lib/gpr/log.cc    |    98 +
 .../gRPC-Core/src/core/lib/gpr/log_android.cc |    76 +
 .../gRPC-Core/src/core/lib/gpr/log_linux.cc   |    97 +
 .../gRPC-Core/src/core/lib/gpr/log_posix.cc   |    95 +
 .../gRPC-Core/src/core/lib/gpr/log_windows.cc |   102 +
 .../gRPC-Core/src/core/lib/gpr/murmur_hash.cc |    80 +
 .../gRPC-Core/src/core/lib/gpr/murmur_hash.h  |    29 +
 .../gRPC-Core/src/core/lib/gpr/spinlock.h     |    46 +
 .../Pods/gRPC-Core/src/core/lib/gpr/string.cc |   365 +
 .../Pods/gRPC-Core/src/core/lib/gpr/string.h  |   127 +
 .../src/core/lib/gpr/string_posix.cc          |    72 +
 .../src/core/lib/gpr/string_util_windows.cc   |    82 +
 .../src/core/lib/gpr/string_windows.cc        |    69 +
 .../src/core/lib/gpr/string_windows.h         |    32 +
 .../Pods/gRPC-Core/src/core/lib/gpr/sync.cc   |   124 +
 .../gRPC-Core/src/core/lib/gpr/sync_abseil.cc |   114 +
 .../gRPC-Core/src/core/lib/gpr/sync_posix.cc  |   176 +
 .../src/core/lib/gpr/sync_windows.cc          |   120 +
 .../Pods/gRPC-Core/src/core/lib/gpr/time.cc   |   259 +
 .../gRPC-Core/src/core/lib/gpr/time_posix.cc  |   186 +
 .../src/core/lib/gpr/time_precise.cc          |   165 +
 .../gRPC-Core/src/core/lib/gpr/time_precise.h |    66 +
 .../src/core/lib/gpr/time_windows.cc          |    98 +
 .../Pods/gRPC-Core/src/core/lib/gpr/tls.h     |    68 +
 .../Pods/gRPC-Core/src/core/lib/gpr/tls_gcc.h |    52 +
 .../gRPC-Core/src/core/lib/gpr/tls_msvc.h     |    52 +
 .../gRPC-Core/src/core/lib/gpr/tls_pthread.cc |    30 +
 .../gRPC-Core/src/core/lib/gpr/tls_pthread.h  |    56 +
 .../Pods/gRPC-Core/src/core/lib/gpr/tmpfile.h |    32 +
 .../src/core/lib/gpr/tmpfile_msys.cc          |    58 +
 .../src/core/lib/gpr/tmpfile_posix.cc         |    70 +
 .../src/core/lib/gpr/tmpfile_windows.cc       |    69 +
 .../Pods/gRPC-Core/src/core/lib/gpr/useful.h  |    65 +
 .../gRPC-Core/src/core/lib/gpr/wrap_memcpy.cc |    42 +
 .../gRPC-Core/src/core/lib/gprpp/arena.cc     |   103 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/arena.h |   120 +
 .../gRPC-Core/src/core/lib/gprpp/atomic.h     |   104 +
 .../src/core/lib/gprpp/debug_location.h       |    53 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/fork.cc |   242 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/fork.h  |   103 +
 .../src/core/lib/gprpp/global_config.h        |    96 +
 .../src/core/lib/gprpp/global_config_custom.h |    29 +
 .../src/core/lib/gprpp/global_config_env.cc   |   135 +
 .../src/core/lib/gprpp/global_config_env.h    |   131 +
 .../core/lib/gprpp/global_config_generic.h    |    44 +
 .../gRPC-Core/src/core/lib/gprpp/host_port.cc |   118 +
 .../gRPC-Core/src/core/lib/gprpp/host_port.h  |    59 +
 .../src/core/lib/gprpp/inlined_vector.h       |    37 +
 .../src/core/lib/gprpp/manual_constructor.h   |   213 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/map.h   |    59 +
 .../gRPC-Core/src/core/lib/gprpp/memory.h     |    51 +
 .../gRPC-Core/src/core/lib/gprpp/mpscq.cc     |   108 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/mpscq.h |    98 +
 .../gRPC-Core/src/core/lib/gprpp/optional.h   |    33 +
 .../gRPC-Core/src/core/lib/gprpp/orphanable.h |   129 +
 .../src/core/lib/gprpp/ref_counted.h          |   312 +
 .../src/core/lib/gprpp/ref_counted_ptr.h      |   187 +
 .../src/core/lib/gprpp/string_view.h          |    60 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/sync.h  |   135 +
 .../Pods/gRPC-Core/src/core/lib/gprpp/thd.h   |   174 +
 .../gRPC-Core/src/core/lib/gprpp/thd_posix.cc |   204 +
 .../src/core/lib/gprpp/thd_windows.cc         |   176 +
 .../src/core/lib/http/format_request.cc       |   122 +
 .../src/core/lib/http/format_request.h        |    34 +
 .../gRPC-Core/src/core/lib/http/httpcli.cc    |   304 +
 .../gRPC-Core/src/core/lib/http/httpcli.h     |   127 +
 .../lib/http/httpcli_security_connector.cc    |   214 +
 .../gRPC-Core/src/core/lib/http/parser.cc     |   372 +
 .../Pods/gRPC-Core/src/core/lib/http/parser.h |   114 +
 .../src/core/lib/iomgr/block_annotate.h       |    57 +
 .../src/core/lib/iomgr/buffer_list.cc         |   308 +
 .../src/core/lib/iomgr/buffer_list.h          |   164 +
 .../src/core/lib/iomgr/call_combiner.cc       |   256 +
 .../src/core/lib/iomgr/call_combiner.h        |   216 +
 .../src/core/lib/iomgr/cfstream_handle.cc     |   208 +
 .../src/core/lib/iomgr/cfstream_handle.h      |    90 +
 .../gRPC-Core/src/core/lib/iomgr/closure.h    |   256 +
 .../gRPC-Core/src/core/lib/iomgr/combiner.cc  |   339 +
 .../gRPC-Core/src/core/lib/iomgr/combiner.h   |    88 +
 .../src/core/lib/iomgr/dynamic_annotations.h  |    67 +
 .../gRPC-Core/src/core/lib/iomgr/endpoint.cc  |    67 +
 .../gRPC-Core/src/core/lib/iomgr/endpoint.h   |   106 +
 .../src/core/lib/iomgr/endpoint_cfstream.cc   |   377 +
 .../src/core/lib/iomgr/endpoint_cfstream.h    |    49 +
 .../src/core/lib/iomgr/endpoint_pair.h        |    34 +
 .../src/core/lib/iomgr/endpoint_pair_posix.cc |    73 +
 .../src/core/lib/iomgr/endpoint_pair_uv.cc    |    40 +
 .../core/lib/iomgr/endpoint_pair_windows.cc   |    87 +
 .../gRPC-Core/src/core/lib/iomgr/error.cc     |   815 +
 .../Pods/gRPC-Core/src/core/lib/iomgr/error.h |   277 +
 .../src/core/lib/iomgr/error_cfstream.cc      |    52 +
 .../src/core/lib/iomgr/error_cfstream.h       |    31 +
 .../src/core/lib/iomgr/error_internal.h       |    61 +
 .../src/core/lib/iomgr/ev_epoll1_linux.cc     |  1368 +
 .../src/core/lib/iomgr/ev_epoll1_linux.h      |    31 +
 .../src/core/lib/iomgr/ev_epollex_linux.cc    |  1657 +
 .../src/core/lib/iomgr/ev_epollex_linux.h     |    30 +
 .../src/core/lib/iomgr/ev_poll_posix.cc       |  1427 +
 .../src/core/lib/iomgr/ev_poll_posix.h        |    29 +
 .../gRPC-Core/src/core/lib/iomgr/ev_posix.cc  |   418 +
 .../gRPC-Core/src/core/lib/iomgr/ev_posix.h   |   207 +
 .../src/core/lib/iomgr/ev_windows.cc          |    30 +
 .../gRPC-Core/src/core/lib/iomgr/exec_ctx.cc  |   224 +
 .../gRPC-Core/src/core/lib/iomgr/exec_ctx.h   |   368 +
 .../gRPC-Core/src/core/lib/iomgr/executor.cc  |   469 +
 .../gRPC-Core/src/core/lib/iomgr/executor.h   |   122 +
 .../src/core/lib/iomgr/executor/mpmcqueue.cc  |   183 +
 .../src/core/lib/iomgr/executor/mpmcqueue.h   |   175 +
 .../src/core/lib/iomgr/executor/threadpool.cc |   137 +
 .../src/core/lib/iomgr/executor/threadpool.h  |   149 +
 .../src/core/lib/iomgr/fork_posix.cc          |   119 +
 .../src/core/lib/iomgr/fork_windows.cc        |    41 +
 .../src/core/lib/iomgr/gethostname.h          |    26 +
 .../core/lib/iomgr/gethostname_fallback.cc    |    30 +
 .../lib/iomgr/gethostname_host_name_max.cc    |    40 +
 .../src/core/lib/iomgr/gethostname_sysconf.cc |    40 +
 .../src/core/lib/iomgr/grpc_if_nametoindex.h  |    30 +
 .../lib/iomgr/grpc_if_nametoindex_posix.cc    |    42 +
 .../iomgr/grpc_if_nametoindex_unsupported.cc  |    38 +
 .../src/core/lib/iomgr/internal_errqueue.cc   |    67 +
 .../src/core/lib/iomgr/internal_errqueue.h    |   191 +
 .../src/core/lib/iomgr/iocp_windows.cc        |   157 +
 .../src/core/lib/iomgr/iocp_windows.h         |    48 +
 .../gRPC-Core/src/core/lib/iomgr/iomgr.cc     |   194 +
 .../Pods/gRPC-Core/src/core/lib/iomgr/iomgr.h |    60 +
 .../src/core/lib/iomgr/iomgr_custom.cc        |    79 +
 .../src/core/lib/iomgr/iomgr_custom.h         |    49 +
 .../src/core/lib/iomgr/iomgr_internal.cc      |    57 +
 .../src/core/lib/iomgr/iomgr_internal.h       |    73 +
 .../src/core/lib/iomgr/iomgr_posix.cc         |    89 +
 .../src/core/lib/iomgr/iomgr_posix.h          |    26 +
 .../core/lib/iomgr/iomgr_posix_cfstream.cc    |   107 +
 .../gRPC-Core/src/core/lib/iomgr/iomgr_uv.cc  |    43 +
 .../src/core/lib/iomgr/iomgr_windows.cc       |   106 +
 .../lib/iomgr/is_epollexclusive_available.cc  |   105 +
 .../lib/iomgr/is_epollexclusive_available.h   |    36 +
 .../gRPC-Core/src/core/lib/iomgr/load_file.cc |    81 +
 .../gRPC-Core/src/core/lib/iomgr/load_file.h  |    35 +
 .../src/core/lib/iomgr/lockfree_event.cc      |   255 +
 .../src/core/lib/iomgr/lockfree_event.h       |    72 +
 .../gRPC-Core/src/core/lib/iomgr/nameser.h    |   106 +
 .../lib/iomgr/poller/eventmanager_libuv.cc    |    87 +
 .../lib/iomgr/poller/eventmanager_libuv.h     |    88 +
 .../src/core/lib/iomgr/polling_entity.cc      |    96 +
 .../src/core/lib/iomgr/polling_entity.h       |    68 +
 .../gRPC-Core/src/core/lib/iomgr/pollset.cc   |    56 +
 .../gRPC-Core/src/core/lib/iomgr/pollset.h    |    99 +
 .../src/core/lib/iomgr/pollset_custom.cc      |   106 +
 .../src/core/lib/iomgr/pollset_custom.h       |    35 +
 .../src/core/lib/iomgr/pollset_set.cc         |    55 +
 .../src/core/lib/iomgr/pollset_set.h          |    55 +
 .../src/core/lib/iomgr/pollset_set_custom.cc  |    48 +
 .../src/core/lib/iomgr/pollset_set_custom.h   |    26 +
 .../src/core/lib/iomgr/pollset_set_windows.cc |    51 +
 .../src/core/lib/iomgr/pollset_set_windows.h  |    26 +
 .../src/core/lib/iomgr/pollset_uv.cc          |    93 +
 .../src/core/lib/iomgr/pollset_windows.cc     |   243 +
 .../src/core/lib/iomgr/pollset_windows.h      |    70 +
 .../Pods/gRPC-Core/src/core/lib/iomgr/port.h  |   243 +
 .../src/core/lib/iomgr/resolve_address.cc     |    50 +
 .../src/core/lib/iomgr/resolve_address.h      |    83 +
 .../core/lib/iomgr/resolve_address_custom.cc  |   183 +
 .../core/lib/iomgr/resolve_address_custom.h   |    43 +
 .../core/lib/iomgr/resolve_address_posix.cc   |   179 +
 .../core/lib/iomgr/resolve_address_windows.cc |   163 +
 .../src/core/lib/iomgr/resource_quota.cc      |  1015 +
 .../src/core/lib/iomgr/resource_quota.h       |   177 +
 .../gRPC-Core/src/core/lib/iomgr/sockaddr.h   |    32 +
 .../src/core/lib/iomgr/sockaddr_custom.h      |    54 +
 .../src/core/lib/iomgr/sockaddr_posix.h       |    55 +
 .../src/core/lib/iomgr/sockaddr_utils.cc      |   299 +
 .../src/core/lib/iomgr/sockaddr_utils.h       |    84 +
 .../src/core/lib/iomgr/sockaddr_windows.h     |    55 +
 .../core/lib/iomgr/socket_factory_posix.cc    |    94 +
 .../src/core/lib/iomgr/socket_factory_posix.h |    69 +
 .../src/core/lib/iomgr/socket_mutator.cc      |    83 +
 .../src/core/lib/iomgr/socket_mutator.h       |    61 +
 .../src/core/lib/iomgr/socket_utils.h         |    47 +
 .../lib/iomgr/socket_utils_common_posix.cc    |   492 +
 .../src/core/lib/iomgr/socket_utils_linux.cc  |    42 +
 .../src/core/lib/iomgr/socket_utils_posix.cc  |    58 +
 .../src/core/lib/iomgr/socket_utils_posix.h   |   160 +
 .../src/core/lib/iomgr/socket_utils_uv.cc     |    49 +
 .../core/lib/iomgr/socket_utils_windows.cc    |    47 +
 .../src/core/lib/iomgr/socket_windows.cc      |   203 +
 .../src/core/lib/iomgr/socket_windows.h       |   127 +
 .../src/core/lib/iomgr/sys_epoll_wrapper.h    |    30 +
 .../src/core/lib/iomgr/tcp_client.cc          |    36 +
 .../gRPC-Core/src/core/lib/iomgr/tcp_client.h |    52 +
 .../src/core/lib/iomgr/tcp_client_cfstream.cc |   217 +
 .../src/core/lib/iomgr/tcp_client_custom.cc   |   163 +
 .../src/core/lib/iomgr/tcp_client_posix.cc    |   357 +
 .../src/core/lib/iomgr/tcp_client_posix.h     |    68 +
 .../src/core/lib/iomgr/tcp_client_windows.cc  |   233 +
 .../src/core/lib/iomgr/tcp_custom.cc          |   371 +
 .../gRPC-Core/src/core/lib/iomgr/tcp_custom.h |    84 +
 .../gRPC-Core/src/core/lib/iomgr/tcp_posix.cc |  1855 ++
 .../gRPC-Core/src/core/lib/iomgr/tcp_posix.h  |    60 +
 .../src/core/lib/iomgr/tcp_server.cc          |    78 +
 .../gRPC-Core/src/core/lib/iomgr/tcp_server.h |   143 +
 .../src/core/lib/iomgr/tcp_server_custom.cc   |   489 +
 .../src/core/lib/iomgr/tcp_server_posix.cc    |   637 +
 .../core/lib/iomgr/tcp_server_utils_posix.h   |   125 +
 .../iomgr/tcp_server_utils_posix_common.cc    |   222 +
 .../iomgr/tcp_server_utils_posix_ifaddrs.cc   |   184 +
 .../iomgr/tcp_server_utils_posix_noifaddrs.cc |    36 +
 .../src/core/lib/iomgr/tcp_server_windows.cc  |   564 +
 .../gRPC-Core/src/core/lib/iomgr/tcp_uv.cc    |   418 +
 .../src/core/lib/iomgr/tcp_windows.cc         |   533 +
 .../src/core/lib/iomgr/tcp_windows.h          |    53 +
 .../src/core/lib/iomgr/time_averaged_stats.cc |    64 +
 .../src/core/lib/iomgr/time_averaged_stats.h  |    73 +
 .../gRPC-Core/src/core/lib/iomgr/timer.cc     |    45 +
 .../Pods/gRPC-Core/src/core/lib/iomgr/timer.h |   127 +
 .../src/core/lib/iomgr/timer_custom.cc        |    95 +
 .../src/core/lib/iomgr/timer_custom.h         |    43 +
 .../src/core/lib/iomgr/timer_generic.cc       |   748 +
 .../src/core/lib/iomgr/timer_heap.cc          |   135 +
 .../gRPC-Core/src/core/lib/iomgr/timer_heap.h |    44 +
 .../src/core/lib/iomgr/timer_manager.cc       |   363 +
 .../src/core/lib/iomgr/timer_manager.h        |    41 +
 .../gRPC-Core/src/core/lib/iomgr/timer_uv.cc  |    66 +
 .../src/core/lib/iomgr/udp_server.cc          |   752 +
 .../gRPC-Core/src/core/lib/iomgr/udp_server.h |   101 +
 .../src/core/lib/iomgr/unix_sockets_posix.cc  |   104 +
 .../src/core/lib/iomgr/unix_sockets_posix.h   |    43 +
 .../core/lib/iomgr/unix_sockets_posix_noop.cc |    49 +
 .../src/core/lib/iomgr/wakeup_fd_eventfd.cc   |    82 +
 .../src/core/lib/iomgr/wakeup_fd_nospecial.cc |    38 +
 .../src/core/lib/iomgr/wakeup_fd_pipe.cc      |   100 +
 .../src/core/lib/iomgr/wakeup_fd_pipe.h       |    28 +
 .../src/core/lib/iomgr/wakeup_fd_posix.cc     |    69 +
 .../src/core/lib/iomgr/wakeup_fd_posix.h      |    96 +
 .../src/core/lib/iomgr/work_serializer.cc     |   155 +
 .../src/core/lib/iomgr/work_serializer.h      |    65 +
 .../Pods/gRPC-Core/src/core/lib/json/json.h   |   239 +
 .../src/core/lib/json/json_reader.cc          |   855 +
 .../src/core/lib/json/json_writer.cc          |   336 +
 .../src/core/lib/profiling/basic_timers.cc    |   293 +
 .../src/core/lib/profiling/stap_timers.cc     |    50 +
 .../gRPC-Core/src/core/lib/profiling/timers.h |    94 +
 .../lib/security/context/security_context.cc  |   321 +
 .../lib/security/context/security_context.h   |   150 +
 .../credentials/alts/alts_credentials.cc      |   110 +
 .../credentials/alts/alts_credentials.h       |   109 +
 .../credentials/alts/check_gcp_environment.cc |    72 +
 .../credentials/alts/check_gcp_environment.h  |    57 +
 .../alts/check_gcp_environment_linux.cc       |    68 +
 .../alts/check_gcp_environment_no_op.cc       |    33 +
 .../alts/check_gcp_environment_windows.cc     |   102 +
 .../grpc_alts_credentials_client_options.cc   |   127 +
 .../alts/grpc_alts_credentials_options.cc     |    46 +
 .../alts/grpc_alts_credentials_options.h      |    75 +
 .../grpc_alts_credentials_server_options.cc   |    59 +
 .../composite/composite_credentials.cc        |   217 +
 .../composite/composite_credentials.h         |   103 +
 .../lib/security/credentials/credentials.cc   |   246 +
 .../lib/security/credentials/credentials.h    |   334 +
 .../credentials/credentials_metadata.cc       |    62 +
 .../credentials/fake/fake_credentials.cc      |   112 +
 .../credentials/fake/fake_credentials.h       |    83 +
 .../google_default/credentials_generic.cc     |    41 +
 .../google_default_credentials.cc             |   388 +
 .../google_default_credentials.h              |    87 +
 .../credentials/iam/iam_credentials.cc        |    78 +
 .../credentials/iam/iam_credentials.h         |    45 +
 .../security/credentials/jwt/json_token.cc    |   300 +
 .../lib/security/credentials/jwt/json_token.h |    82 +
 .../credentials/jwt/jwt_credentials.cc        |   172 +
 .../credentials/jwt/jwt_credentials.h         |    68 +
 .../security/credentials/jwt/jwt_verifier.cc  |   944 +
 .../security/credentials/jwt/jwt_verifier.h   |   123 +
 .../credentials/local/local_credentials.cc    |    64 +
 .../credentials/local/local_credentials.h     |    61 +
 .../credentials/oauth2/oauth2_credentials.cc  |   743 +
 .../credentials/oauth2/oauth2_credentials.h   |   165 +
 .../credentials/plugin/plugin_credentials.cc  |   256 +
 .../credentials/plugin/plugin_credentials.h   |    70 +
 .../credentials/ssl/ssl_credentials.cc        |   364 +
 .../credentials/ssl/ssl_credentials.h         |    99 +
 .../tls/grpc_tls_credentials_options.cc       |   235 +
 .../tls/grpc_tls_credentials_options.h        |   286 +
 .../credentials/tls/tls_credentials.cc        |   128 +
 .../credentials/tls/tls_credentials.h         |    62 +
 .../alts/alts_security_connector.cc           |   286 +
 .../alts/alts_security_connector.h            |    76 +
 .../fake/fake_security_connector.cc           |   324 +
 .../fake/fake_security_connector.h            |    45 +
 .../security_connector/load_system_roots.h    |    29 +
 .../load_system_roots_fallback.cc             |    32 +
 .../load_system_roots_linux.cc                |   170 +
 .../load_system_roots_linux.h                 |    44 +
 .../local/local_security_connector.cc         |   281 +
 .../local/local_security_connector.h          |    59 +
 .../security_connector/security_connector.cc  |   129 +
 .../security_connector/security_connector.h   |   176 +
 .../ssl/ssl_security_connector.cc             |   444 +
 .../ssl/ssl_security_connector.h              |    79 +
 .../security/security_connector/ssl_utils.cc  |   516 +
 .../security/security_connector/ssl_utils.h   |   182 +
 .../security_connector/ssl_utils_config.cc    |    32 +
 .../security_connector/ssl_utils_config.h     |    30 +
 .../tls/tls_security_connector.cc             |   577 +
 .../tls/tls_security_connector.h              |   161 +
 .../lib/security/transport/auth_filters.h     |    40 +
 .../security/transport/client_auth_filter.cc  |   467 +
 .../lib/security/transport/secure_endpoint.cc |   446 +
 .../lib/security/transport/secure_endpoint.h  |    41 +
 .../security/transport/security_handshaker.cc |   574 +
 .../security/transport/security_handshaker.h  |    45 +
 .../security/transport/server_auth_filter.cc  |   326 +
 .../transport/target_authority_table.cc       |    75 +
 .../transport/target_authority_table.h        |    40 +
 .../core/lib/security/transport/tsi_error.cc  |    29 +
 .../core/lib/security/transport/tsi_error.h   |    29 +
 .../src/core/lib/security/util/json_util.cc   |    73 +
 .../src/core/lib/security/util/json_util.h    |    44 +
 .../Pods/gRPC-Core/src/core/lib/slice/b64.cc  |   239 +
 .../Pods/gRPC-Core/src/core/lib/slice/b64.h   |    50 +
 .../src/core/lib/slice/percent_encoding.cc    |   169 +
 .../src/core/lib/slice/percent_encoding.h     |    65 +
 .../gRPC-Core/src/core/lib/slice/slice.cc     |   559 +
 .../src/core/lib/slice/slice_buffer.cc        |   413 +
 .../src/core/lib/slice/slice_hash_table.h     |   199 +
 .../src/core/lib/slice/slice_intern.cc        |   376 +
 .../src/core/lib/slice/slice_internal.h       |   350 +
 .../core/lib/slice/slice_string_helpers.cc    |   127 +
 .../src/core/lib/slice/slice_string_helpers.h |    49 +
 .../src/core/lib/slice/slice_utils.h          |   191 +
 .../core/lib/slice/slice_weak_hash_table.h    |   102 +
 .../src/core/lib/surface/api_trace.cc         |    24 +
 .../src/core/lib/surface/api_trace.h          |    52 +
 .../src/core/lib/surface/byte_buffer.cc       |    92 +
 .../core/lib/surface/byte_buffer_reader.cc    |   146 +
 .../gRPC-Core/src/core/lib/surface/call.cc    |  2045 ++
 .../gRPC-Core/src/core/lib/surface/call.h     |   125 +
 .../src/core/lib/surface/call_details.cc      |    41 +
 .../src/core/lib/surface/call_log_batch.cc    |   119 +
 .../src/core/lib/surface/call_test_only.h     |    43 +
 .../gRPC-Core/src/core/lib/surface/channel.cc |   521 +
 .../gRPC-Core/src/core/lib/surface/channel.h  |   127 +
 .../src/core/lib/surface/channel_init.cc      |   109 +
 .../src/core/lib/surface/channel_init.h       |    78 +
 .../src/core/lib/surface/channel_ping.cc      |    65 +
 .../core/lib/surface/channel_stack_type.cc    |    58 +
 .../src/core/lib/surface/channel_stack_type.h |    47 +
 .../src/core/lib/surface/completion_queue.cc  |  1438 +
 .../src/core/lib/surface/completion_queue.h   |    97 +
 .../lib/surface/completion_queue_factory.cc   |    88 +
 .../lib/surface/completion_queue_factory.h    |    38 +
 .../src/core/lib/surface/event_string.cc      |    68 +
 .../src/core/lib/surface/event_string.h       |    29 +
 .../gRPC-Core/src/core/lib/surface/init.cc    |   250 +
 .../gRPC-Core/src/core/lib/surface/init.h     |    27 +
 .../src/core/lib/surface/init_secure.cc       |    84 +
 .../src/core/lib/surface/lame_client.cc       |   191 +
 .../src/core/lib/surface/lame_client.h        |    28 +
 .../src/core/lib/surface/metadata_array.cc    |    36 +
 .../gRPC-Core/src/core/lib/surface/server.cc  |  1599 +
 .../gRPC-Core/src/core/lib/surface/server.h   |    67 +
 .../src/core/lib/surface/validate_metadata.cc |   105 +
 .../src/core/lib/surface/validate_metadata.h  |    41 +
 .../gRPC-Core/src/core/lib/surface/version.cc |    28 +
 .../src/core/lib/transport/bdp_estimator.cc   |    87 +
 .../src/core/lib/transport/bdp_estimator.h    |    94 +
 .../src/core/lib/transport/byte_stream.cc     |   158 +
 .../src/core/lib/transport/byte_stream.h      |   160 +
 .../core/lib/transport/connectivity_state.cc  |   179 +
 .../core/lib/transport/connectivity_state.h   |   129 +
 .../src/core/lib/transport/error_utils.cc     |   141 +
 .../src/core/lib/transport/error_utils.h      |    46 +
 .../src/core/lib/transport/http2_errors.h     |    41 +
 .../src/core/lib/transport/metadata.cc        |   679 +
 .../src/core/lib/transport/metadata.h         |   446 +
 .../src/core/lib/transport/metadata_batch.cc  |   392 +
 .../src/core/lib/transport/metadata_batch.h   |   192 +
 .../src/core/lib/transport/pid_controller.cc  |    51 +
 .../src/core/lib/transport/pid_controller.h   |   116 +
 .../src/core/lib/transport/static_metadata.cc |  1230 +
 .../src/core/lib/transport/static_metadata.h  |   597 +
 .../core/lib/transport/status_conversion.cc   |   100 +
 .../core/lib/transport/status_conversion.h    |    38 +
 .../src/core/lib/transport/status_metadata.cc |    61 +
 .../src/core/lib/transport/status_metadata.h  |    48 +
 .../core/lib/transport/timeout_encoding.cc    |   151 +
 .../src/core/lib/transport/timeout_encoding.h |    38 +
 .../src/core/lib/transport/transport.cc       |   260 +
 .../src/core/lib/transport/transport.h        |   455 +
 .../src/core/lib/transport/transport_impl.h   |    71 +
 .../core/lib/transport/transport_op_string.cc |   210 +
 .../gRPC-Core/src/core/lib/uri/uri_parser.cc  |   314 +
 .../gRPC-Core/src/core/lib/uri/uri_parser.h   |    50 +
 .../plugin_registry/grpc_plugin_registry.cc   |   105 +
 .../src/core/tsi/alts/crypt/aes_gcm.cc        |   709 +
 .../gRPC-Core/src/core/tsi/alts/crypt/gsec.cc |   189 +
 .../gRPC-Core/src/core/tsi/alts/crypt/gsec.h  |   454 +
 .../tsi/alts/frame_protector/alts_counter.cc  |   118 +
 .../tsi/alts/frame_protector/alts_counter.h   |    98 +
 .../tsi/alts/frame_protector/alts_crypter.cc  |    66 +
 .../tsi/alts/frame_protector/alts_crypter.h   |   255 +
 .../frame_protector/alts_frame_protector.cc   |   407 +
 .../frame_protector/alts_frame_protector.h    |    55 +
 .../alts_record_protocol_crypter_common.cc    |   114 +
 .../alts_record_protocol_crypter_common.h     |   114 +
 .../alts_seal_privacy_integrity_crypter.cc    |   105 +
 .../alts_unseal_privacy_integrity_crypter.cc  |   103 +
 .../tsi/alts/frame_protector/frame_handler.cc |   218 +
 .../tsi/alts/frame_protector/frame_handler.h  |   236 +
 .../alts/handshaker/alts_handshaker_client.cc |   892 +
 .../alts/handshaker/alts_handshaker_client.h  |   157 +
 .../alts/handshaker/alts_shared_resource.cc   |    83 +
 .../alts/handshaker/alts_shared_resource.h    |    73 +
 .../alts/handshaker/alts_tsi_handshaker.cc    |   644 +
 .../tsi/alts/handshaker/alts_tsi_handshaker.h |   104 +
 .../handshaker/alts_tsi_handshaker_private.h  |    88 +
 .../tsi/alts/handshaker/alts_tsi_utils.cc     |    64 +
 .../core/tsi/alts/handshaker/alts_tsi_utils.h |    57 +
 .../transport_security_common_api.cc          |   223 +
 .../transport_security_common_api.h           |   175 +
 ...lts_grpc_integrity_only_record_protocol.cc |   226 +
 ...alts_grpc_integrity_only_record_protocol.h |    54 +
 ..._grpc_privacy_integrity_record_protocol.cc |   144 +
 ...s_grpc_privacy_integrity_record_protocol.h |    49 +
 .../alts_grpc_record_protocol.h               |    91 +
 .../alts_grpc_record_protocol_common.cc       |   174 +
 .../alts_grpc_record_protocol_common.h        |   100 +
 .../alts_iovec_record_protocol.cc             |   476 +
 .../alts_iovec_record_protocol.h              |   199 +
 .../alts_zero_copy_grpc_protector.cc          |   307 +
 .../alts_zero_copy_grpc_protector.h           |    57 +
 .../src/core/tsi/fake_transport_security.cc   |   794 +
 .../src/core/tsi/fake_transport_security.h    |    47 +
 .../src/core/tsi/grpc_shadow_boringssl.h      |  3311 ++
 .../src/core/tsi/local_transport_security.cc  |   211 +
 .../src/core/tsi/local_transport_security.h   |    51 +
 .../core/tsi/ssl/session_cache/ssl_session.h  |    77 +
 .../session_cache/ssl_session_boringssl.cc    |    57 +
 .../ssl/session_cache/ssl_session_cache.cc    |   214 +
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+				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
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+			defaultConfigurationName = Release;
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+	};
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+}
diff --git a/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..919434a
--- /dev/null
+++ b/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/contents.xcworkspacedata	
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>
diff --git a/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/ChattingApp 000/ChattingApp.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist	
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/ChattingApp 000/ChattingApp.xcworkspace/contents.xcworkspacedata b/ChattingApp 000/ChattingApp.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..3b6752f
--- /dev/null
+++ b/ChattingApp 000/ChattingApp.xcworkspace/contents.xcworkspacedata	
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:ChattingApp.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>
diff --git a/ChattingApp 000/ChattingApp.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/ChattingApp 000/ChattingApp.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/ChattingApp 000/ChattingApp.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist	
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/ChattingApp 000/ChattingApp/.DS_Store b/ChattingApp 000/ChattingApp/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..5008ddfcf53c02e82d7eee2e57c38e5672ef89f6
GIT binary patch
literal 6148
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literal 0
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diff --git a/ChattingApp 000/ChattingApp/AppDelegate.swift b/ChattingApp 000/ChattingApp/AppDelegate.swift
new file mode 100644
index 0000000..61d4448
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/AppDelegate.swift	
@@ -0,0 +1,40 @@
+//
+//  AppDelegate.swift
+//  ChatApp4
+//
+//  Created by Tsnim Alqahtani on 26/03/1443 AH.
+//
+
+
+import UIKit
+import Firebase
+
+
+@main
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        FirebaseApp.configure()
+        return true
+    }
+
+    // MARK: UISceneSession Lifecycle
+
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+
+
+}
+
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/AccentColor.colorset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/AccentColor.colorset/Contents.json
new file mode 100644
index 0000000..eb87897
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/AccentColor.colorset/Contents.json	
@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/AppIcon.appiconset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/AppIcon.appiconset/Contents.json
new file mode 100644
index 0000000..9221b9b
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/AppIcon.appiconset/Contents.json	
@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/Contents.json
new file mode 100644
index 0000000..73c0059
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/Contents.json	
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PL.imageset/327654010091211.png b/ChattingApp 000/ChattingApp/Assets.xcassets/PL.imageset/327654010091211.png
new file mode 100644
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diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PL.imageset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/PL.imageset/Contents.json
new file mode 100644
index 0000000..43c74dd
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/PL.imageset/Contents.json	
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "327654010091211.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PL1.imageset/93-934565_forestry-solutions-society6-ascension-wall-tapestry-small-51.png b/ChattingApp 000/ChattingApp/Assets.xcassets/PL1.imageset/93-934565_forestry-solutions-society6-ascension-wall-tapestry-small-51.png
new file mode 100644
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diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PL1.imageset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/PL1.imageset/Contents.json
new file mode 100644
index 0000000..827618d
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/PL1.imageset/Contents.json	
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "93-934565_forestry-solutions-society6-ascension-wall-tapestry-small-51.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PLL.imageset/148-1489728_chat-icon-hd-png-download.png b/ChattingApp 000/ChattingApp/Assets.xcassets/PLL.imageset/148-1489728_chat-icon-hd-png-download.png
new file mode 100644
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diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PLL.imageset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/PLL.imageset/Contents.json
new file mode 100644
index 0000000..f237c78
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/PLL.imageset/Contents.json	
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "148-1489728_chat-icon-hd-png-download.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PLLL.imageset/3-33867_forest-circle-grove.png b/ChattingApp 000/ChattingApp/Assets.xcassets/PLLL.imageset/3-33867_forest-circle-grove.png
new file mode 100644
index 0000000000000000000000000000000000000000..adf7065ef83c12640e70b6976007f5d0f8870edb
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diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/PLLL.imageset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/PLLL.imageset/Contents.json
new file mode 100644
index 0000000..34e0156
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/PLLL.imageset/Contents.json	
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "3-33867_forest-circle-grove.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/z.imageset/Contents.json b/ChattingApp 000/ChattingApp/Assets.xcassets/z.imageset/Contents.json
new file mode 100644
index 0000000..6a4102f
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Assets.xcassets/z.imageset/Contents.json	
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "pexels-photo-1934846.jpeg",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/Assets.xcassets/z.imageset/pexels-photo-1934846.jpeg b/ChattingApp 000/ChattingApp/Assets.xcassets/z.imageset/pexels-photo-1934846.jpeg
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diff --git a/ChattingApp 000/ChattingApp/Base.lproj/LaunchScreen.storyboard b/ChattingApp 000/ChattingApp/Base.lproj/LaunchScreen.storyboard
new file mode 100644
index 0000000..865e932
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Base.lproj/LaunchScreen.storyboard	
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>
diff --git a/ChattingApp 000/ChattingApp/ChatViewController.swift b/ChattingApp 000/ChattingApp/ChatViewController.swift
new file mode 100644
index 0000000..a11d296
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/ChatViewController.swift	
@@ -0,0 +1,159 @@
+//
+//  ChatViewController.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+
+import UIKit
+import Firebase
+import FirebaseFirestore
+
+class ChatVC: UIViewController {
+	var user : User?
+	var messages = [Message]()
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		setupUI()
+		getAllMessages()
+		chatTableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
+	}
+	let chatTableView : UITableView = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		return $0
+	}(UITableView())
+	let messageTextField : UITextField = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.placeholder = "Message..."
+		$0.backgroundColor = .init(white: 0.85, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	let sendButton : UIButton = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.setBackgroundImage(UIImage(systemName: "paperplane.circle.fill"), for: .normal)
+		$0.tintColor = .brown
+		$0.addTarget(self, action: #selector(sendMessage), for: .touchUpInside)
+		return $0
+	}(UIButton(type: .system))
+	func setupUI() {
+		view.backgroundColor = .white
+		navigationItem.title = user?.name
+		chatTableView.delegate = self
+		chatTableView.dataSource = self
+		view.addSubview(chatTableView)
+		view.addSubview(messageTextField)
+		view.addSubview(sendButton)
+		NSLayoutConstraint.activate([
+			chatTableView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
+			chatTableView.leftAnchor.constraint(equalTo: view.leftAnchor),
+			chatTableView.rightAnchor.constraint(equalTo: view.rightAnchor),
+			chatTableView.bottomAnchor.constraint(equalTo: messageTextField.topAnchor),
+			messageTextField.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 15),
+			messageTextField.rightAnchor.constraint(equalTo: sendButton.leftAnchor, constant: -5),//*****
+			messageTextField.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
+			messageTextField.heightAnchor.constraint(equalToConstant: 45),
+			sendButton.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -15),
+			sendButton.heightAnchor.constraint(equalTo: messageTextField.heightAnchor),
+			sendButton.widthAnchor.constraint(equalTo: sendButton.heightAnchor),
+			sendButton.centerYAnchor.constraint(equalTo: messageTextField.centerYAnchor)
+		])
+	}
+}
+extension ChatVC : UITableViewDelegate , UITableViewDataSource {
+	func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+		return messages.count
+	}
+	func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+		let cell = chatTableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
+		let currentUserID = Auth.auth().currentUser?.uid
+		cell.textLabel?.text = messages[indexPath.row].content
+		print(messages[indexPath.row].content)
+		if messages[indexPath.row].sender == currentUserID {
+			cell.textLabel?.textAlignment = .right
+			cell.textLabel?.textColor = .blue
+		} else {
+			cell.textLabel?.textAlignment = .left
+			cell.textLabel?.textColor = .red
+		}
+		return cell
+	}
+}
+extension ChatVC {
+	@objc func sendMessage() {
+		let messageId = UUID().uuidString
+		guard let currentUserID = Auth.auth().currentUser?.uid else {return}
+		guard let message = messageTextField.text else {return}
+		guard let user = user else {return}
+        //setdata
+		Firestore.firestore().document("messages/\(messageId)").setData([
+			"sender" : currentUserID,
+			"receiver" : user.id!,
+			"content" : message,
+			"id": messageId,
+            //"timestamp":Timestamp,
+		])
+		messageTextField.text = ""
+	}
+	func getAllMessages() {
+		guard let chatID = user?.id else {return}
+		guard let userID = Auth.auth().currentUser?.uid else {return}
+		self.messages.removeAll()
+		//self.chatTableView.reloadData()
+		// self.messages = []
+		Firestore.firestore()
+			.collection("messages")
+			.whereField("receiver", isEqualTo: userID)
+			.whereField("sender", isEqualTo: chatID)
+			.addSnapshotListener { snapshot, error in
+				guard let userID = Auth.auth().currentUser?.uid else {return}
+				if error == nil {
+					for document in snapshot!.documents{
+						let data = document.data()
+						let newMsg = Message(
+							content: data["content"] as? String,
+							sender: data["sender"] as? String,
+							reciever: data["receiver"] as? String,
+							id: (data["id"] as? String) ?? "",
+							timestamp: (data["timestamp"] as? Timestamp) ?? Timestamp()
+						)
+						let isMsgAdded = self.messages.contains { msg in
+							return msg.id == newMsg.id
+						}
+						if !isMsgAdded {
+							self.messages.append(newMsg)
+						}
+					}
+					self.chatTableView.reloadData()
+				}
+				//self.chatTableView.reloadData()
+			}
+		Firestore.firestore()
+			.collection("messages")
+			.whereField("sender", isEqualTo: userID)
+			.whereField("receiver", isEqualTo: chatID)
+			.addSnapshotListener { snapshot, error in
+				if error == nil {
+					for document in snapshot!.documents{
+						let data = document.data()
+						let newMsg = Message(
+							content: data["content"] as? String,
+							sender: data["sender"] as? String,
+							reciever: data["receiver"] as? String,
+							id: (data["id"] as? String) ?? "",
+							timestamp: (data["timestamp"] as? Timestamp) ?? Timestamp()
+						)
+						let isMsgAdded = self.messages.contains { msg in
+							return msg.id == newMsg.id
+						}
+						if !isMsgAdded {
+							self.messages.append(newMsg)
+						}
+						self.chatTableView.reloadData()
+					}
+				}
+				// self.chatTableView.reloadData()
+			}
+	}
+}
diff --git a/ChattingApp 000/ChattingApp/Favorite.swift b/ChattingApp 000/ChattingApp/Favorite.swift
new file mode 100644
index 0000000..a7b5f3f
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Favorite.swift	
@@ -0,0 +1,117 @@
+//
+//  Favorite.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+import UIKit
+class favorite:UIViewController{
+	var img: UIImageView = {
+		let imageView = UIImageView()
+		imageView.image = UIImage(named: "PL")
+		imageView.translatesAutoresizingMaskIntoConstraints = false
+		return imageView
+	}()
+	let name = UILabel()
+	let status = UILabel()
+	
+	
+	
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		
+		
+		view.backgroundColor = .white
+		
+		view.addSubview(img)
+		NSLayoutConstraint.activate([
+			img.topAnchor.constraint(equalTo: view.topAnchor, constant: 30),
+			img.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 10),
+			img.heightAnchor.constraint(equalToConstant: 80),
+			img.widthAnchor.constraint(equalTo: img.heightAnchor,multiplier: 100/100)])
+		
+		
+		
+		name.text = "Mohammed"
+		name.font = .boldSystemFont(ofSize: 23)
+		name.translatesAutoresizingMaskIntoConstraints = false
+		
+		view.addSubview(name)
+		NSLayoutConstraint.activate([
+			
+			name.topAnchor.constraint(equalTo: view.topAnchor,constant: 40),
+			name.leftAnchor.constraint(equalTo: img.leftAnchor , constant: -130),
+			name.heightAnchor.constraint(equalToConstant: 80),
+			name.trailingAnchor.constraint(equalTo: view.trailingAnchor , constant: 100)
+		])
+		
+		
+		status.text = "⭐️"
+		status.textColor = .orange
+		status.translatesAutoresizingMaskIntoConstraints = false
+		
+		view.addSubview(status)
+		NSLayoutConstraint.activate([
+			
+			status.topAnchor.constraint(equalTo: view.topAnchor,constant: 70),
+			status.leftAnchor.constraint(equalTo: view.leftAnchor , constant: 30),
+			status.heightAnchor.constraint(equalToConstant: 20),
+			status.trailingAnchor.constraint(equalTo: view.trailingAnchor , constant: 100)
+		])
+		
+		var img: UIImageView = {
+			let imageView = UIImageView()
+			imageView.image = UIImage(named: "PL1")
+			imageView.translatesAutoresizingMaskIntoConstraints = false
+			return imageView
+		}()
+		let name = UILabel()
+		let status = UILabel()
+		
+	
+			
+			view.backgroundColor = .orange
+			
+			view.addSubview(img)
+			NSLayoutConstraint.activate([
+				img.topAnchor.constraint(equalTo: view.topAnchor, constant: 120),
+				img.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 10),
+				
+				img.heightAnchor.constraint(equalToConstant: 80),
+				img.widthAnchor.constraint(equalTo: img.heightAnchor,multiplier: 100/100)])
+			
+			
+			
+			name.text = "tasnim"
+			name.font = .boldSystemFont(ofSize: 23)
+			name.translatesAutoresizingMaskIntoConstraints = false
+			
+			view.addSubview(name)
+			NSLayoutConstraint.activate([
+				
+				name.topAnchor.constraint(equalTo: view.topAnchor,constant: 100),
+				name.leftAnchor.constraint(equalTo: img.leftAnchor , constant: -130),
+				name.heightAnchor.constraint(equalToConstant: 120),
+				name.trailingAnchor.constraint(equalTo: view.trailingAnchor , constant: 140)
+			])
+			
+			
+			status.text = "⭐️"
+			status.textColor = .orange
+			status.translatesAutoresizingMaskIntoConstraints = false
+			
+			view.addSubview(status)
+			NSLayoutConstraint.activate([
+				
+				status.topAnchor.constraint(equalTo: view.topAnchor,constant: 130),
+				status.leftAnchor.constraint(equalTo: view.leftAnchor , constant: 30),
+				status.heightAnchor.constraint(equalToConstant: 50),
+				status.trailingAnchor.constraint(equalTo: view.trailingAnchor , constant: 130)
+			])
+		view.backgroundColor = .white
+	
+	}
+	
+	
+	
+}
diff --git a/ChattingApp 000/ChattingApp/GoogleService-Info.plist b/ChattingApp 000/ChattingApp/GoogleService-Info.plist
new file mode 100644
index 0000000..b30e616
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/GoogleService-Info.plist	
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CLIENT_ID</key>
+	<string>365379051447-pgg62vf4t3ibh5edmsac8il6eq6uqmdv.apps.googleusercontent.com</string>
+	<key>REVERSED_CLIENT_ID</key>
+	<string>com.googleusercontent.apps.365379051447-pgg62vf4t3ibh5edmsac8il6eq6uqmdv</string>
+	<key>API_KEY</key>
+	<string>AIzaSyBqIgxelTIlkqVUsKQ2_5hRvtkJU2KRXsI</string>
+	<key>GCM_SENDER_ID</key>
+	<string>365379051447</string>
+	<key>PLIST_VERSION</key>
+	<string>1</string>
+	<key>BUNDLE_ID</key>
+	<string>com.tasnim1.chatting</string>
+	<key>PROJECT_ID</key>
+	<string>tuwaiq-ios</string>
+	<key>STORAGE_BUCKET</key>
+	<string>tuwaiq-ios.appspot.com</string>
+	<key>IS_ADS_ENABLED</key>
+	<false></false>
+	<key>IS_ANALYTICS_ENABLED</key>
+	<false></false>
+	<key>IS_APPINVITE_ENABLED</key>
+	<true></true>
+	<key>IS_GCM_ENABLED</key>
+	<true></true>
+	<key>IS_SIGNIN_ENABLED</key>
+	<true></true>
+	<key>GOOGLE_APP_ID</key>
+	<string>1:365379051447:ios:753b11d02146b836225232</string>
+	<key>DATABASE_URL</key>
+	<string>https://tuwaiq-ios-default-rtdb.europe-west1.firebasedatabase.app</string>
+</dict>
+</plist>
\ No newline at end of file
diff --git a/ChattingApp 000/ChattingApp/Info.plist b/ChattingApp 000/ChattingApp/Info.plist
new file mode 100644
index 0000000..0eb786d
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Info.plist	
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+</dict>
+</plist>
diff --git a/ChattingApp 000/ChattingApp/LoginViewController.swift b/ChattingApp 000/ChattingApp/LoginViewController.swift
new file mode 100644
index 0000000..e2bf1f1
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/LoginViewController.swift	
@@ -0,0 +1,148 @@
+//
+//  hh.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+import UIKit
+import Firebase
+
+class LoginViewController: UIViewController {
+	var imgUser: UIImageView = {
+		let imageView = UIImageView()
+		imageView.image = UIImage(named: "PLL")
+		imageView.translatesAutoresizingMaskIntoConstraints = false
+		return imageView
+	}()
+
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		setupUI()
+		
+		view.addSubview(imgUser)
+		NSLayoutConstraint.activate([
+			imgUser.topAnchor.constraint(equalTo: view.topAnchor, constant: 220),
+			imgUser.centerXAnchor.constraint(equalTo: view.centerXAnchor),
+			imgUser.heightAnchor.constraint(equalToConstant: 300),
+			imgUser.widthAnchor.constraint(equalTo: imgUser.heightAnchor,multiplier: 100/100)])
+		
+		
+	}
+
+	
+	let emailTextField : UITextField = {
+		$0.placeholder = "e-mail"
+		$0.text = "tsnim@gmail.com"
+		$0.textAlignment = .center
+		$0.backgroundColor = .init(white: 0.90, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	
+	
+	let passwordTextField : UITextField = {
+		$0.placeholder = "password"
+		$0.text = "123123"
+		$0.isSecureTextEntry = false
+		$0.textAlignment = .center
+		$0.backgroundColor = .init(white: 0.90, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	
+	
+	let logInButton : UIButton = {
+		$0.setTitle("LogIn", for: .normal)
+		$0.titleLabel?.font = UIFont.boldSystemFont(ofSize: 22)
+		$0.backgroundColor = .cyan
+		$0.layer.cornerRadius = 22.5
+		$0.tintColor = .black
+		$0.addTarget(self, action: #selector(loginAction), for: .touchUpInside)
+		return $0
+	}(UIButton(type: .system))
+	
+	let signUpButton : UIButton = {
+		$0.setTitle("Sign Up", for: .normal)
+		$0.titleLabel?.font = UIFont.boldSystemFont(ofSize: 22)
+		$0.backgroundColor = .systemCyan
+		$0.layer.cornerRadius = 22.5
+		$0.tintColor = .black
+		$0.addTarget(self, action: #selector(showSignupVC), for: .touchUpInside)
+		return $0
+	}(UIButton(type: .system))
+	
+	
+	let stackView : UIStackView = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.axis = .vertical
+		$0.distribution = .fillEqually
+		$0.spacing = 10
+		return $0
+	}(UIStackView())
+	
+	
+	@objc func loginAction() {
+		if let email = emailTextField.text, email.isEmpty == false, let password = passwordTextField.text, password.isEmpty == false {
+			
+			Auth.auth().signIn(withEmail: email, password: password) { result, error in
+				if error == nil {
+					// go to main vc
+					let vc = UINavigationController( rootViewController:  TabVC())
+					vc.modalTransitionStyle = .crossDissolve
+					vc.modalPresentationStyle = .fullScreen
+					self.present(vc, animated: true, completion: nil)
+				} else {
+					print(error?.localizedDescription)
+				}
+			}
+		}
+		
+	}
+
+	
+	@objc func showSignupVC() {
+		
+		
+
+			if let email = emailTextField.text,
+			   let password = passwordTextField.text
+			    {
+				Auth.auth().createUser(withEmail: email, password: password) { authResult, error in
+					if let e = error {
+						print(e)
+					} else {
+						print("123")
+						
+					}
+				}
+			}
+			
+			
+		navigationController?.pushViewController(SignUpViewController(), animated: true)
+
+		}
+
+	}
+
+
+
+extension LoginViewController {
+	func setupUI() {
+		view.backgroundColor = .white
+		
+		view.addSubview(stackView)
+		stackView.addArrangedSubview(emailTextField)
+		stackView.addArrangedSubview(passwordTextField)
+		stackView.addArrangedSubview(logInButton)
+		stackView.addArrangedSubview(signUpButton)
+		
+		
+		NSLayoutConstraint.activate([
+			stackView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 500),
+			stackView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -30),
+			stackView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 30),
+			stackView.heightAnchor.constraint(equalToConstant: 210)
+		])
+	}
+}
diff --git a/ChattingApp 000/ChattingApp/Model.swift b/ChattingApp 000/ChattingApp/Model.swift
new file mode 100644
index 0000000..6bf6cf8
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Model.swift	
@@ -0,0 +1,25 @@
+//
+//  Model.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+import Foundation
+import Firebase
+
+struct User {
+	let name : String?
+	let email : String?
+	let id : String?
+	let status : String
+}
+
+
+struct Message {
+	let content : String?
+	let sender : String?
+	let reciever : String?
+	let id : String?
+	let timestamp : Timestamp?
+}
diff --git a/ChattingApp 000/ChattingApp/Profile.swift b/ChattingApp 000/ChattingApp/Profile.swift
new file mode 100644
index 0000000..cd556b5
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Profile.swift	
@@ -0,0 +1,148 @@
+//
+//  Profile.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+
+import UIKit
+import FirebaseFirestore
+import Firebase
+class ProfileVC : UIViewController{
+	
+	
+	var img: UIImageView = {
+		let imageView = UIImageView()
+		imageView.image = UIImage(named: "PLLL")
+		imageView.translatesAutoresizingMaskIntoConstraints = false
+		return imageView
+	}()
+	let name : UITextField = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.placeholder = "Write your name"
+		$0.backgroundColor = .init(white: 0.85, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		$0.textAlignment = .center
+		return $0
+	}(UITextField())
+	let status : UITextField = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.placeholder = "Write your status"
+		$0.backgroundColor = .init(white: 0.85, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		$0.textAlignment = .center
+
+		return $0
+	}(UITextField())
+	let Button : UIButton = {
+		$0.backgroundColor = .darkGray
+		$0.setTitle("Save", for: .normal)
+		$0.tintColor = .black
+		$0.layer.cornerRadius = 22.5
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.addTarget(self, action: #selector(haB), for: .touchUpInside)
+		return $0
+	}(UIButton())
+	let Button1 : UIButton = {
+		$0.backgroundColor = .white
+		$0.setTitle("sign out", for: .normal)
+		$0.setTitleColor(UIColor.red, for: .normal)
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.addTarget(self, action: #selector(A), for: .touchUpInside)
+		return $0
+	}(UIButton())
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		
+		view.backgroundColor = .white
+			view.addSubview(img)
+		img.contentMode = .scaleAspectFit
+		NSLayoutConstraint.activate([
+			img.topAnchor.constraint(equalTo: view.topAnchor, constant: 170),
+			img.centerXAnchor.constraint(equalTo: view.centerXAnchor),
+			img.heightAnchor.constraint(equalToConstant: 200),
+			img.widthAnchor.constraint(equalTo: img.heightAnchor,multiplier: 100/100)])
+		
+				name.font = .boldSystemFont(ofSize: 23)
+		name.translatesAutoresizingMaskIntoConstraints = false
+		view.addSubview(name)
+		NSLayoutConstraint.activate([
+			name.topAnchor.constraint(equalTo: view.topAnchor,constant: 440),
+			name.leftAnchor.constraint(equalTo: view.leftAnchor , constant: 50),
+			name.heightAnchor.constraint(equalToConstant: 40),
+			name.widthAnchor.constraint(equalToConstant: 290),
+			//name.trailingAnchor.constraint(equalTo: view.trailingAnchor , constant: 100)
+		])
+		status.textColor = .green
+		status.translatesAutoresizingMaskIntoConstraints = false
+		view.addSubview(status)
+		NSLayoutConstraint.activate([
+			status.topAnchor.constraint(equalTo: view.topAnchor,constant: 485),
+			status.leftAnchor.constraint(equalTo: view.leftAnchor , constant: 50),
+			status.heightAnchor.constraint(equalToConstant: 40),
+			status.widthAnchor.constraint(equalToConstant: 290),
+		])
+		view.addSubview(Button)
+		NSLayoutConstraint.activate([
+			Button.topAnchor.constraint(equalTo: view.topAnchor,constant: 570),
+
+//			Button.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 500),
+			Button.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 30),
+			Button.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -30),
+			Button.heightAnchor.constraint(equalToConstant: 70)
+		])
+		view.addSubview(Button1)
+		NSLayoutConstraint.activate([
+			Button1.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 570),
+			Button1.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 30),
+			Button1.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -30),
+			Button1.heightAnchor.constraint(equalToConstant: 70)
+		])
+		guard let currentUserID = Auth.auth().currentUser?.uid else {return}
+		Firestore.firestore()
+			.document("users/\(currentUserID)")
+			.addSnapshotListener{ doucument, error in
+				if error != nil {
+					print (error)
+					return
+				}
+				self.name.text = doucument?.data()?["name"] as? String
+				self.status.text = doucument?.data()?["status"] as? String
+			}
+	}
+	@objc func haB() {
+		guard let currentUserID = Auth.auth().currentUser?.uid else {return}
+		Firestore.firestore().document("users/\(currentUserID)").updateData([
+			"name" : name.text,
+			"id" : currentUserID,
+			"status" :status.text,
+		])
+		let alert1 = UIAlertController(
+			title: ("Saved"),
+			message: "Saved update data",
+			preferredStyle: .alert)
+		alert1.addAction(
+			UIAlertAction(
+				title: "OK",
+				style: .default,
+				handler: { action in
+					print("OK")
+				}
+			)
+		)
+		present(alert1, animated: true, completion: nil)
+	}
+	@objc func A() {
+		let firebaseAuth = Auth.auth()
+		do {
+			try firebaseAuth.signOut()
+			dismiss(animated: true, completion: nil)
+		} catch let signOutError as NSError {
+			print ("Error signing out: \(signOutError.localizedDescription)")
+		}
+	}
+}
+
+
+
diff --git a/ChattingApp 000/ChattingApp/SceneDelegate.swift b/ChattingApp 000/ChattingApp/SceneDelegate.swift
new file mode 100644
index 0000000..1e9f586
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/SceneDelegate.swift	
@@ -0,0 +1,56 @@
+//
+//  SceneDelegate.swift
+//  ChatApp4
+//
+//  Created by Tsnim Alqahtani on 26/03/1443 AH.
+//
+import UIKit
+import Firebase
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+
+    var window: UIWindow?
+
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
+        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
+        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
+        guard let windowScene = (scene as? UIWindowScene) else { return }
+               
+               window = UIWindow(frame: UIScreen.main.bounds)
+               window?.rootViewController = LoginViewController()
+               window?.makeKeyAndVisible()
+               window?.windowScene = windowScene
+    }
+
+    func sceneDidDisconnect(_ scene: UIScene) {
+        // Called as the scene is being released by the system.
+        // This occurs shortly after the scene enters the background, or when its session is discarded.
+        // Release any resources associated with this scene that can be re-created the next time the scene connects.
+        // The scene may re-connect later, as its session was not necessarily discarded (see `application:didDiscardSceneSessions` instead).
+    }
+
+    func sceneDidBecomeActive(_ scene: UIScene) {
+        // Called when the scene has moved from an inactive state to an active state.
+        // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
+    }
+
+    func sceneWillResignActive(_ scene: UIScene) {
+        // Called when the scene will move from an active state to an inactive state.
+        // This may occur due to temporary interruptions (ex. an incoming phone call).
+    }
+
+    func sceneWillEnterForeground(_ scene: UIScene) {
+        // Called as the scene transitions from the background to the foreground.
+        // Use this method to undo the changes made on entering the background.
+    }
+
+    func sceneDidEnterBackground(_ scene: UIScene) {
+        // Called as the scene transitions from the foreground to the background.
+        // Use this method to save data, release shared resources, and store enough scene-specific state information
+        // to restore the scene back to its current state.
+    }
+
+
+}
diff --git a/ChattingApp 000/ChattingApp/SignUpViewController.swift b/ChattingApp 000/ChattingApp/SignUpViewController.swift
new file mode 100644
index 0000000..79c3c55
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/SignUpViewController.swift	
@@ -0,0 +1,105 @@
+//
+//  ViewController.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 25/03/1443 AH.
+
+import UIKit
+import Firebase
+
+class SignUpViewController: UIViewController {
+	
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		
+		setupUI()
+	}
+	
+	let nameTextField : UITextField = {
+		$0.placeholder = "Name"
+		$0.textAlignment = .center
+		$0.backgroundColor = .init(white: 0.90, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	
+	let emailTextField : UITextField = {
+		$0.placeholder = "E-mail"
+		$0.textAlignment = .center
+		$0.backgroundColor = .init(white: 0.90, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	
+	
+	let passwordTextField : UITextField = {
+		$0.placeholder = "Password"
+		$0.isSecureTextEntry = true
+		$0.textAlignment = .center
+		$0.backgroundColor = .init(white: 0.90, alpha: 1)
+		$0.layer.cornerRadius = 22.5
+		return $0
+	}(UITextField())
+	
+	
+	let signUpButton : UIButton = {
+		$0.setTitle("Sign Up", for: .normal)
+		$0.titleLabel?.font = UIFont.boldSystemFont(ofSize: 22)
+		$0.backgroundColor = .systemPink
+		$0.layer.cornerRadius = 22.5
+		$0.tintColor = .white
+		$0.addTarget(self, action: #selector(signupAction), for: .touchUpInside)
+		return $0
+	}(UIButton(type: .system))
+	
+	
+	let stackView : UIStackView = {
+		$0.translatesAutoresizingMaskIntoConstraints = false
+		$0.axis = .vertical
+		$0.distribution = .fillEqually
+		$0.spacing = 10
+		return $0
+	}(UIStackView())
+	
+	
+	@objc func signupAction() {
+		print("123")
+
+		if let email = emailTextField.text,
+		   let password = passwordTextField.text,
+		   let name = nameTextField.text {
+			Auth.auth().createUser(withEmail: email, password: password) { authResult, error in
+				if let e = error {
+					print(e)
+				} else {
+					print("123")
+					
+				}
+			}
+		}
+		
+		
+		
+	}
+	
+}
+extension SignUpViewController {
+	func setupUI() {
+		view.backgroundColor = .white
+		
+		view.addSubview(stackView)
+		stackView.addArrangedSubview(nameTextField)
+		stackView.addArrangedSubview(emailTextField)
+		stackView.addArrangedSubview(passwordTextField)
+		stackView.addArrangedSubview(signUpButton)
+		
+		
+		NSLayoutConstraint.activate([
+			stackView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 50),
+			stackView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -30),
+			stackView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 30),
+			stackView.heightAnchor.constraint(equalToConstant: 210)
+		])
+	}
+}
+
diff --git a/ChattingApp 000/ChattingApp/Tab Bar.swift b/ChattingApp 000/ChattingApp/Tab Bar.swift
new file mode 100644
index 0000000..8a0a2d4
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/Tab Bar.swift	
@@ -0,0 +1,33 @@
+//
+//  Tab Bar.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+import UIKit
+import Firebase
+class TabVC: UITabBarController, UITabBarControllerDelegate {
+  override func viewDidLoad() {
+	super.viewDidLoad()
+	delegate = self
+  }
+  override func viewWillAppear(_ animated: Bool) {
+	super.viewWillAppear(animated)
+	let item1 = UsersViewController()
+	let item2 = ProfileVC()
+	  let item3 = favorite()
+	let icon1 = UITabBarItem(title: "chat", image: UIImage(systemName: "contextualmenu.and.cursorarrow"), selectedImage: UIImage(systemName: "contextualmenu.and.cursorarrow"))
+	let icon2 = UITabBarItem(title: "profile", image: UIImage(systemName: "person"), selectedImage: UIImage(systemName: "person"))
+	  let icon3 = UITabBarItem(title: "favorite", image: UIImage(systemName: "star"), selectedImage: UIImage(systemName: "star"))
+	item1.tabBarItem = icon1
+	item2.tabBarItem = icon2
+	  item3.tabBarItem = icon3
+	let controllers = [item1,item2,item3] //array of the root view controllers displayed by the tab bar interface
+	self.viewControllers = controllers
+  }
+  func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
+	print("Should select viewController: \(viewController.title ?? "") ?")
+	return true;
+  }
+}
diff --git a/ChattingApp 000/ChattingApp/users.swift b/ChattingApp 000/ChattingApp/users.swift
new file mode 100644
index 0000000..4fdb67d
--- /dev/null
+++ b/ChattingApp 000/ChattingApp/users.swift	
@@ -0,0 +1,72 @@
+//
+//  users.swift
+//  whatsApp
+//
+//  Created by m.alqahtani on 26/03/1443 AH.
+//
+
+import UIKit
+import Firebase
+import FirebaseFirestore
+
+class UsersViewController : UITableViewController {
+	
+	var users = [User]()
+	
+	override func viewDidLoad() {
+		super.viewDidLoad()
+		
+		view.backgroundColor = .white
+		navigationItem.title = "Users"
+		
+		tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
+		
+		getUsers()
+		
+	}
+	
+	
+	override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+		return users.count
+	}
+	
+	override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+		let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
+		cell.textLabel?.text = users[indexPath.row].name
+		return cell
+	}
+	
+	override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+		let vc = ChatVC()
+		vc.user = users[indexPath.row]
+		navigationController?.pushViewController(vc, animated: true)
+	}
+	
+	
+	func getUsers() {
+		Firestore.firestore().collection("users").addSnapshotListener { snapshot, error in
+			if error == nil {
+				self.users.removeAll()
+				guard let userID = Auth.auth().currentUser?.uid else {return}
+				for document in snapshot!.documents{
+					let data = document.data()
+					
+					if data["id"] as? String != userID {
+						self.users.append(User(
+							name: data["name"] as? String,
+							email: data["email"] as? String,
+							id: data["id"] as? String,
+							status: data["status"] as? String ?? ""))
+					}
+					
+				}
+				
+				self.tableView.reloadData()
+				
+			} else {
+				print("ERROR : ", error?.localizedDescription)
+			}
+		}
+	}
+	
+}
diff --git a/ChattingApp 000/Podfile b/ChattingApp 000/Podfile
new file mode 100644
index 0000000..ac8eae0
--- /dev/null
+++ b/ChattingApp 000/Podfile	
@@ -0,0 +1,13 @@
+# Uncomment the next line to define a global platform for your project
+# platform :ios, '9.0'
+
+target 'ChattingApp' do
+  # Comment the next line if you don't want to use dynamic frameworks
+  use_frameworks!
+
+  # Pods for ChattingApp
+   pod 'Firebase/Auth'
+   pod 'Firebase/Firestore'
+
+
+end
diff --git a/ChattingApp 000/Podfile.lock b/ChattingApp 000/Podfile.lock
new file mode 100644
index 0000000..617fb9d
--- /dev/null
+++ b/ChattingApp 000/Podfile.lock	
@@ -0,0 +1,475 @@
+PODS:
+  - abseil/algorithm (0.20200225.0):
+    - abseil/algorithm/algorithm (= 0.20200225.0)
+    - abseil/algorithm/container (= 0.20200225.0)
+  - abseil/algorithm/algorithm (0.20200225.0):
+    - abseil/base/config
+  - abseil/algorithm/container (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/base (0.20200225.0):
+    - abseil/base/atomic_hook (= 0.20200225.0)
+    - abseil/base/base (= 0.20200225.0)
+    - abseil/base/base_internal (= 0.20200225.0)
+    - abseil/base/bits (= 0.20200225.0)
+    - abseil/base/config (= 0.20200225.0)
+    - abseil/base/core_headers (= 0.20200225.0)
+    - abseil/base/dynamic_annotations (= 0.20200225.0)
+    - abseil/base/endian (= 0.20200225.0)
+    - abseil/base/errno_saver (= 0.20200225.0)
+    - abseil/base/exponential_biased (= 0.20200225.0)
+    - abseil/base/log_severity (= 0.20200225.0)
+    - abseil/base/malloc_internal (= 0.20200225.0)
+    - abseil/base/periodic_sampler (= 0.20200225.0)
+    - abseil/base/pretty_function (= 0.20200225.0)
+    - abseil/base/raw_logging_internal (= 0.20200225.0)
+    - abseil/base/spinlock_wait (= 0.20200225.0)
+    - abseil/base/throw_delegate (= 0.20200225.0)
+  - abseil/base/atomic_hook (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/base (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/log_severity
+    - abseil/base/raw_logging_internal
+    - abseil/base/spinlock_wait
+    - abseil/meta/type_traits
+  - abseil/base/base_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/meta/type_traits
+  - abseil/base/bits (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/config (0.20200225.0)
+  - abseil/base/core_headers (0.20200225.0):
+    - abseil/base/config
+  - abseil/base/dynamic_annotations (0.20200225.0)
+  - abseil/base/endian (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/errno_saver (0.20200225.0):
+    - abseil/base/config
+  - abseil/base/exponential_biased (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/log_severity (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/malloc_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/raw_logging_internal
+  - abseil/base/periodic_sampler (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/exponential_biased
+  - abseil/base/pretty_function (0.20200225.0)
+  - abseil/base/raw_logging_internal (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/log_severity
+  - abseil/base/spinlock_wait (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/core_headers
+    - abseil/base/errno_saver
+  - abseil/base/throw_delegate (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/container/common (0.20200225.0):
+    - abseil/meta/type_traits
+    - abseil/types/optional
+  - abseil/container/compressed_tuple (0.20200225.0):
+    - abseil/utility/utility
+  - abseil/container/container_memory (0.20200225.0):
+    - abseil/memory/memory
+    - abseil/utility/utility
+  - abseil/container/fixed_array (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/throw_delegate
+    - abseil/container/compressed_tuple
+    - abseil/memory/memory
+  - abseil/container/flat_hash_map (0.20200225.0):
+    - abseil/algorithm/container
+    - abseil/container/container_memory
+    - abseil/container/hash_function_defaults
+    - abseil/container/raw_hash_map
+    - abseil/memory/memory
+  - abseil/container/hash_function_defaults (0.20200225.0):
+    - abseil/base/config
+    - abseil/hash/hash
+    - abseil/strings/strings
+  - abseil/container/hash_policy_traits (0.20200225.0):
+    - abseil/meta/type_traits
+  - abseil/container/hashtable_debug_hooks (0.20200225.0):
+    - abseil/base/config
+  - abseil/container/hashtablez_sampler (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/core_headers
+    - abseil/base/exponential_biased
+    - abseil/container/have_sse
+    - abseil/debugging/stacktrace
+    - abseil/memory/memory
+    - abseil/synchronization/synchronization
+    - abseil/utility/utility
+  - abseil/container/have_sse (0.20200225.0)
+  - abseil/container/inlined_vector (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/throw_delegate
+    - abseil/container/inlined_vector_internal
+    - abseil/memory/memory
+  - abseil/container/inlined_vector_internal (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/container/compressed_tuple
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/types/span
+  - abseil/container/layout (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/strings/strings
+    - abseil/types/span
+    - abseil/utility/utility
+  - abseil/container/raw_hash_map (0.20200225.0):
+    - abseil/base/throw_delegate
+    - abseil/container/container_memory
+    - abseil/container/raw_hash_set
+  - abseil/container/raw_hash_set (0.20200225.0):
+    - abseil/base/bits
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/container/common
+    - abseil/container/compressed_tuple
+    - abseil/container/container_memory
+    - abseil/container/hash_policy_traits
+    - abseil/container/hashtable_debug_hooks
+    - abseil/container/hashtablez_sampler
+    - abseil/container/have_sse
+    - abseil/container/layout
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/utility/utility
+  - abseil/debugging/debugging_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/errno_saver
+    - abseil/base/raw_logging_internal
+  - abseil/debugging/demangle_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/debugging/stacktrace (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/debugging/debugging_internal
+  - abseil/debugging/symbolize (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+    - abseil/debugging/debugging_internal
+    - abseil/debugging/demangle_internal
+  - abseil/hash/city (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+  - abseil/hash/hash (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/container/fixed_array
+    - abseil/hash/city
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/types/optional
+    - abseil/types/variant
+    - abseil/utility/utility
+  - abseil/memory (0.20200225.0):
+    - abseil/memory/memory (= 0.20200225.0)
+  - abseil/memory/memory (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/meta (0.20200225.0):
+    - abseil/meta/type_traits (= 0.20200225.0)
+  - abseil/meta/type_traits (0.20200225.0):
+    - abseil/base/config
+  - abseil/numeric/int128 (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/strings/internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/base/raw_logging_internal
+    - abseil/meta/type_traits
+  - abseil/strings/str_format (0.20200225.0):
+    - abseil/strings/str_format_internal
+  - abseil/strings/str_format_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/types/span
+  - abseil/strings/strings (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/bits
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/base/raw_logging_internal
+    - abseil/base/throw_delegate
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/internal
+  - abseil/synchronization/graphcycles_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+  - abseil/synchronization/kernel_timeout_internal (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/raw_logging_internal
+    - abseil/time/time
+  - abseil/synchronization/synchronization (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+    - abseil/debugging/stacktrace
+    - abseil/debugging/symbolize
+    - abseil/synchronization/graphcycles_internal
+    - abseil/synchronization/kernel_timeout_internal
+    - abseil/time/time
+  - abseil/time (0.20200225.0):
+    - abseil/time/internal (= 0.20200225.0)
+    - abseil/time/time (= 0.20200225.0)
+  - abseil/time/internal (0.20200225.0):
+    - abseil/time/internal/cctz (= 0.20200225.0)
+  - abseil/time/internal/cctz (0.20200225.0):
+    - abseil/time/internal/cctz/civil_time (= 0.20200225.0)
+    - abseil/time/internal/cctz/time_zone (= 0.20200225.0)
+  - abseil/time/internal/cctz/civil_time (0.20200225.0):
+    - abseil/base/config
+  - abseil/time/internal/cctz/time_zone (0.20200225.0):
+    - abseil/base/config
+    - abseil/time/internal/cctz/civil_time
+  - abseil/time/time (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/core_headers
+    - abseil/base/raw_logging_internal
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/time/internal/cctz/civil_time
+    - abseil/time/internal/cctz/time_zone
+  - abseil/types (0.20200225.0):
+    - abseil/types/any (= 0.20200225.0)
+    - abseil/types/bad_any_cast (= 0.20200225.0)
+    - abseil/types/bad_any_cast_impl (= 0.20200225.0)
+    - abseil/types/bad_optional_access (= 0.20200225.0)
+    - abseil/types/bad_variant_access (= 0.20200225.0)
+    - abseil/types/compare (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - abseil/types/span (= 0.20200225.0)
+    - abseil/types/variant (= 0.20200225.0)
+  - abseil/types/any (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/types/bad_any_cast
+    - abseil/utility/utility
+  - abseil/types/bad_any_cast (0.20200225.0):
+    - abseil/base/config
+    - abseil/types/bad_any_cast_impl
+  - abseil/types/bad_any_cast_impl (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/bad_optional_access (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/bad_variant_access (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/compare (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/types/optional (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/types/bad_optional_access
+    - abseil/utility/utility
+  - abseil/types/span (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/throw_delegate
+    - abseil/meta/type_traits
+  - abseil/types/variant (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/types/bad_variant_access
+    - abseil/utility/utility
+  - abseil/utility/utility (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/meta/type_traits
+  - BoringSSL-GRPC (0.0.7):
+    - BoringSSL-GRPC/Implementation (= 0.0.7)
+    - BoringSSL-GRPC/Interface (= 0.0.7)
+  - BoringSSL-GRPC/Implementation (0.0.7):
+    - BoringSSL-GRPC/Interface (= 0.0.7)
+  - BoringSSL-GRPC/Interface (0.0.7)
+  - Firebase/Auth (8.8.0):
+    - Firebase/CoreOnly
+    - FirebaseAuth (~> 8.8.0)
+  - Firebase/CoreOnly (8.8.0):
+    - FirebaseCore (= 8.8.0)
+  - Firebase/Firestore (8.8.0):
+    - Firebase/CoreOnly
+    - FirebaseFirestore (~> 8.8.0)
+  - FirebaseAuth (8.8.0):
+    - FirebaseCore (~> 8.0)
+    - GoogleUtilities/AppDelegateSwizzler (~> 7.4)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GTMSessionFetcher/Core (~> 1.5)
+  - FirebaseCore (8.8.0):
+    - FirebaseCoreDiagnostics (~> 8.0)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GoogleUtilities/Logger (~> 7.4)
+  - FirebaseCoreDiagnostics (8.8.0):
+    - GoogleDataTransport (~> 9.0)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GoogleUtilities/Logger (~> 7.4)
+    - nanopb (~> 2.30908.0)
+  - FirebaseFirestore (8.8.0):
+    - abseil/algorithm (= 0.20200225.0)
+    - abseil/base (= 0.20200225.0)
+    - abseil/container/flat_hash_map (= 0.20200225.0)
+    - abseil/memory (= 0.20200225.0)
+    - abseil/meta (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/time (= 0.20200225.0)
+    - abseil/types (= 0.20200225.0)
+    - FirebaseCore (~> 8.0)
+    - "gRPC-C++ (~> 1.28.0)"
+    - leveldb-library (~> 1.22)
+    - nanopb (~> 2.30908.0)
+  - GoogleDataTransport (9.1.2):
+    - GoogleUtilities/Environment (~> 7.2)
+    - nanopb (~> 2.30908.0)
+    - PromisesObjC (< 3.0, >= 1.2)
+  - GoogleUtilities/AppDelegateSwizzler (7.6.0):
+    - GoogleUtilities/Environment
+    - GoogleUtilities/Logger
+    - GoogleUtilities/Network
+  - GoogleUtilities/Environment (7.6.0):
+    - PromisesObjC (< 3.0, >= 1.2)
+  - GoogleUtilities/Logger (7.6.0):
+    - GoogleUtilities/Environment
+  - GoogleUtilities/Network (7.6.0):
+    - GoogleUtilities/Logger
+    - "GoogleUtilities/NSData+zlib"
+    - GoogleUtilities/Reachability
+  - "GoogleUtilities/NSData+zlib (7.6.0)"
+  - GoogleUtilities/Reachability (7.6.0):
+    - GoogleUtilities/Logger
+  - "gRPC-C++ (1.28.2)":
+    - "gRPC-C++/Implementation (= 1.28.2)"
+    - "gRPC-C++/Interface (= 1.28.2)"
+  - "gRPC-C++/Implementation (1.28.2)":
+    - abseil/container/inlined_vector (= 0.20200225.0)
+    - abseil/memory/memory (= 0.20200225.0)
+    - abseil/strings/str_format (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - "gRPC-C++/Interface (= 1.28.2)"
+    - gRPC-Core (= 1.28.2)
+  - "gRPC-C++/Interface (1.28.2)"
+  - gRPC-Core (1.28.2):
+    - gRPC-Core/Implementation (= 1.28.2)
+    - gRPC-Core/Interface (= 1.28.2)
+  - gRPC-Core/Implementation (1.28.2):
+    - abseil/container/inlined_vector (= 0.20200225.0)
+    - abseil/memory/memory (= 0.20200225.0)
+    - abseil/strings/str_format (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - BoringSSL-GRPC (= 0.0.7)
+    - gRPC-Core/Interface (= 1.28.2)
+  - gRPC-Core/Interface (1.28.2)
+  - GTMSessionFetcher/Core (1.7.0)
+  - leveldb-library (1.22.1)
+  - nanopb (2.30908.0):
+    - nanopb/decode (= 2.30908.0)
+    - nanopb/encode (= 2.30908.0)
+  - nanopb/decode (2.30908.0)
+  - nanopb/encode (2.30908.0)
+  - PromisesObjC (2.0.0)
+
+DEPENDENCIES:
+  - Firebase/Auth
+  - Firebase/Firestore
+
+SPEC REPOS:
+  trunk:
+    - abseil
+    - BoringSSL-GRPC
+    - Firebase
+    - FirebaseAuth
+    - FirebaseCore
+    - FirebaseCoreDiagnostics
+    - FirebaseFirestore
+    - GoogleDataTransport
+    - GoogleUtilities
+    - "gRPC-C++"
+    - gRPC-Core
+    - GTMSessionFetcher
+    - leveldb-library
+    - nanopb
+    - PromisesObjC
+
+SPEC CHECKSUMS:
+  abseil: 6c8eb7892aefa08d929b39f9bb108e5367e3228f
+  BoringSSL-GRPC: 8edf627ee524575e2f8d19d56f068b448eea3879
+  Firebase: 629510f1a9ddb235f3a7c5c8ceb23ba887f0f814
+  FirebaseAuth: bcf0adeff88bda5dcb3beeabe5760f1226ab7b2f
+  FirebaseCore: 98b29e3828f0a53651c363937a7f7d92a19f1ba2
+  FirebaseCoreDiagnostics: fe77f42da6329d6d83d21fd9d621a6b704413bfc
+  FirebaseFirestore: 29baf05d5e7e0d5003eb34e5805d92b9858b36d4
+  GoogleDataTransport: 629c20a4d363167143f30ea78320d5a7eb8bd940
+  GoogleUtilities: 684ee790a24f73ebb2d1d966e9711c203f2a4237
+  "gRPC-C++": 13d8ccef97d5c3c441b7e3c529ef28ebee86fad2
+  gRPC-Core: 4afa11bfbedf7cdecd04de535a9e046893404ed5
+  GTMSessionFetcher: 43748f93435c2aa068b1cbe39655aaf600652e91
+  leveldb-library: 50c7b45cbd7bf543c81a468fe557a16ae3db8729
+  nanopb: a0ba3315591a9ae0a16a309ee504766e90db0c96
+  PromisesObjC: 68159ce6952d93e17b2dfe273b8c40907db5ba58
+
+PODFILE CHECKSUM: 884119ce57b2c4c5e652372014e8c643889a117f
+
+COCOAPODS: 1.11.2
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/LICENSE b/ChattingApp 000/Pods/BoringSSL-GRPC/LICENSE
new file mode 100644
index 0000000..49c41fa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/LICENSE	
@@ -0,0 +1,251 @@
+BoringSSL is a fork of OpenSSL. As such, large parts of it fall under OpenSSL
+licensing. Files that are completely new have a Google copyright and an ISC
+license. This license is reproduced at the bottom of this file.
+
+Contributors to BoringSSL are required to follow the CLA rules for Chromium:
+https://cla.developers.google.com/clas
+
+Files in third_party/ have their own licenses, as described therein. The MIT
+license, for third_party/fiat, which, unlike other third_party directories, is
+compiled into non-test libraries, is included below.
+
+The OpenSSL toolkit stays under a dual license, i.e. both the conditions of the
+OpenSSL License and the original SSLeay license apply to the toolkit. See below
+for the actual license texts. Actually both licenses are BSD-style Open Source
+licenses. In case of any license issues related to OpenSSL please contact
+openssl-core@openssl.org.
+
+The following are Google-internal bug numbers where explicit permission from
+some authors is recorded for use of their work. (This is purely for our own
+record keeping.)
+  27287199
+  27287880
+  27287883
+
+  OpenSSL License
+  ---------------
+
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+ Original SSLeay License
+ -----------------------
+
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+
+ISC license used for completely new code in BoringSSL:
+
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+
+The code in third_party/fiat carries the MIT license:
+
+Copyright (c) 2015-2016 the fiat-crypto authors (see
+https://github.com/mit-plv/fiat-crypto/blob/master/AUTHORS).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+
+Licenses for support code
+-------------------------
+
+Parts of the TLS test suite are under the Go license. This code is not included
+in BoringSSL (i.e. libcrypto and libssl) when compiled, however, so
+distributing code linked against BoringSSL does not trigger this license:
+
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+BoringSSL uses the Chromium test infrastructure to run a continuous build,
+trybots etc. The scripts which manage this, and the script for generating build
+metadata, are under the Chromium license. Distributing code linked against
+BoringSSL does not trigger this license.
+
+Copyright 2015 The Chromium Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c b/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c
new file mode 100644
index 0000000..dce06be
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c	
@@ -0,0 +1,1407 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+ /* This file was generated by err_data_generate.go. */
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(ERR_LIB_NONE == 1, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_SYS == 2, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BN == 3, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_RSA == 4, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DH == 5, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_EVP == 6, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BUF == 7, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_OBJ == 8, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PEM == 9, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DSA == 10, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_X509 == 11, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ASN1 == 12, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CONF == 13, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CRYPTO == 14, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_EC == 15, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_SSL == 16, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BIO == 17, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PKCS7 == 18, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PKCS8 == 19, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_X509V3 == 20, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_RAND == 21, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ENGINE == 22, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_OCSP == 23, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_UI == 24, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_COMP == 25, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ECDSA == 26, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ECDH == 27, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_HMAC == 28, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DIGEST == 29, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CIPHER == 30, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_HKDF == 31, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_USER == 32, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_NUM_LIBS == 33, "number of libraries changed");
+
+const uint32_t kOpenSSLReasonValues[] = {
+    0xc32083a,
+    0xc328854,
+    0xc330863,
+    0xc338873,
+    0xc340882,
+    0xc34889b,
+    0xc3508a7,
+    0xc3588c4,
+    0xc3608e4,
+    0xc3688f2,
+    0xc370902,
+    0xc37890f,
+    0xc38091f,
+    0xc38892a,
+    0xc390940,
+    0xc39894f,
+    0xc3a0963,
+    0xc3a8847,
+    0xc3b00ea,
+    0xc3b88d6,
+    0x10320847,
+    0x1032959f,
+    0x103315ab,
+    0x103395c4,
+    0x103415d7,
+    0x10348f27,
+    0x10350c60,
+    0x103595ea,
+    0x10361614,
+    0x10369627,
+    0x10371646,
+    0x1037965f,
+    0x10381674,
+    0x10389692,
+    0x103916a1,
+    0x103996bd,
+    0x103a16d8,
+    0x103a96e7,
+    0x103b1703,
+    0x103b971e,
+    0x103c1744,
+    0x103c80ea,
+    0x103d1755,
+    0x103d9769,
+    0x103e1788,
+    0x103e9797,
+    0x103f17ae,
+    0x103f97c1,
+    0x10400c24,
+    0x104097d4,
+    0x104117f2,
+    0x10419805,
+    0x1042181f,
+    0x1042982f,
+    0x10431843,
+    0x10439859,
+    0x10441871,
+    0x10449886,
+    0x1045189a,
+    0x104598ac,
+    0x104605fd,
+    0x1046894f,
+    0x104718c1,
+    0x104798d8,
+    0x104818ed,
+    0x104898fb,
+    0x10490e73,
+    0x10499735,
+    0x104a15ff,
+    0x14320c07,
+    0x14328c15,
+    0x14330c24,
+    0x14338c36,
+    0x143400ac,
+    0x143480ea,
+    0x18320083,
+    0x18328f7d,
+    0x183300ac,
+    0x18338f93,
+    0x18340fa7,
+    0x183480ea,
+    0x18350fbc,
+    0x18358fd4,
+    0x18360fe9,
+    0x18368ffd,
+    0x18371021,
+    0x18379037,
+    0x1838104b,
+    0x1838905b,
+    0x18390a75,
+    0x1839906b,
+    0x183a1091,
+    0x183a90b7,
+    0x183b0c7f,
+    0x183b9106,
+    0x183c1118,
+    0x183c9123,
+    0x183d1133,
+    0x183d9144,
+    0x183e1155,
+    0x183e9167,
+    0x183f1190,
+    0x183f91a9,
+    0x184011c1,
+    0x184086d5,
+    0x184110da,
+    0x184190a5,
+    0x184210c4,
+    0x18428c6c,
+    0x18431080,
+    0x184390ec,
+    0x203211fb,
+    0x203291e8,
+    0x24321207,
+    0x24328995,
+    0x24331219,
+    0x24339226,
+    0x24341233,
+    0x24349245,
+    0x24351254,
+    0x24359271,
+    0x2436127e,
+    0x2436928c,
+    0x2437129a,
+    0x243792a8,
+    0x243812b1,
+    0x243892be,
+    0x243912d1,
+    0x28320c54,
+    0x28328c7f,
+    0x28330c24,
+    0x28338c92,
+    0x28340c60,
+    0x283480ac,
+    0x283500ea,
+    0x28358c6c,
+    0x2c322f0c,
+    0x2c3292e8,
+    0x2c332f1a,
+    0x2c33af2c,
+    0x2c342f40,
+    0x2c34af52,
+    0x2c352f6d,
+    0x2c35af7f,
+    0x2c362f92,
+    0x2c36832d,
+    0x2c372f9f,
+    0x2c37afb1,
+    0x2c382fd6,
+    0x2c38afed,
+    0x2c392ffb,
+    0x2c39b00b,
+    0x2c3a301d,
+    0x2c3ab031,
+    0x2c3b3042,
+    0x2c3bb061,
+    0x2c3c12fa,
+    0x2c3c9310,
+    0x2c3d3075,
+    0x2c3d9329,
+    0x2c3e3092,
+    0x2c3eb0a0,
+    0x2c3f30b8,
+    0x2c3fb0d0,
+    0x2c4030fa,
+    0x2c4091fb,
+    0x2c41310b,
+    0x2c41b11e,
+    0x2c4211c1,
+    0x2c42b12f,
+    0x2c430722,
+    0x2c43b053,
+    0x2c442fc4,
+    0x2c44b0dd,
+    0x30320000,
+    0x30328015,
+    0x3033001f,
+    0x30338038,
+    0x3034004a,
+    0x30348064,
+    0x3035006b,
+    0x30358083,
+    0x30360094,
+    0x303680ac,
+    0x303700b9,
+    0x303780c8,
+    0x303800ea,
+    0x303880f7,
+    0x3039010a,
+    0x30398125,
+    0x303a013a,
+    0x303a814e,
+    0x303b0162,
+    0x303b8173,
+    0x303c018c,
+    0x303c81a9,
+    0x303d01b7,
+    0x303d81cb,
+    0x303e01db,
+    0x303e81f4,
+    0x303f0204,
+    0x303f8217,
+    0x30400226,
+    0x30408232,
+    0x30410247,
+    0x30418257,
+    0x3042026e,
+    0x3042827b,
+    0x3043028e,
+    0x3043829d,
+    0x304402b2,
+    0x304482d3,
+    0x304502e6,
+    0x304582f9,
+    0x30460312,
+    0x3046832d,
+    0x3047034a,
+    0x3047835c,
+    0x3048036a,
+    0x3048837b,
+    0x3049038a,
+    0x304983a2,
+    0x304a03b4,
+    0x304a83c8,
+    0x304b03e0,
+    0x304b83f3,
+    0x304c03fe,
+    0x304c840f,
+    0x304d041b,
+    0x304d8431,
+    0x304e043f,
+    0x304e8455,
+    0x304f0467,
+    0x304f8479,
+    0x3050049c,
+    0x305084af,
+    0x305104c0,
+    0x305184d0,
+    0x305204e8,
+    0x305284fd,
+    0x30530515,
+    0x30538529,
+    0x30540541,
+    0x3054855a,
+    0x30550573,
+    0x30558590,
+    0x3056059b,
+    0x305685b3,
+    0x305705c3,
+    0x305785d4,
+    0x305805e7,
+    0x305885fd,
+    0x30590606,
+    0x3059861b,
+    0x305a062e,
+    0x305a863d,
+    0x305b065d,
+    0x305b866c,
+    0x305c068d,
+    0x305c86a9,
+    0x305d06b5,
+    0x305d86d5,
+    0x305e06f1,
+    0x305e8702,
+    0x305f0718,
+    0x305f8722,
+    0x3060048c,
+    0x34320b65,
+    0x34328b79,
+    0x34330b96,
+    0x34338ba9,
+    0x34340bb8,
+    0x34348bf1,
+    0x34350bd5,
+    0x3c320083,
+    0x3c328cbc,
+    0x3c330cd5,
+    0x3c338cf0,
+    0x3c340d0d,
+    0x3c348d37,
+    0x3c350d52,
+    0x3c358d78,
+    0x3c360d91,
+    0x3c368da9,
+    0x3c370dba,
+    0x3c378dc8,
+    0x3c380dd5,
+    0x3c388de9,
+    0x3c390c7f,
+    0x3c398e0c,
+    0x3c3a0e20,
+    0x3c3a890f,
+    0x3c3b0e30,
+    0x3c3b8e4b,
+    0x3c3c0e5d,
+    0x3c3c8e90,
+    0x3c3d0e9a,
+    0x3c3d8eae,
+    0x3c3e0ebc,
+    0x3c3e8ee1,
+    0x3c3f0ca8,
+    0x3c3f8eca,
+    0x3c4000ac,
+    0x3c4080ea,
+    0x3c410d28,
+    0x3c418d67,
+    0x3c420e73,
+    0x3c428dfd,
+    0x40321971,
+    0x40329987,
+    0x403319b5,
+    0x403399bf,
+    0x403419d6,
+    0x403499f4,
+    0x40351a04,
+    0x40359a16,
+    0x40361a23,
+    0x40369a2f,
+    0x40371a44,
+    0x40379a56,
+    0x40381a61,
+    0x40389a73,
+    0x40390f27,
+    0x40399a83,
+    0x403a1a96,
+    0x403a9ab7,
+    0x403b1ac8,
+    0x403b9ad8,
+    0x403c0064,
+    0x403c8083,
+    0x403d1b5c,
+    0x403d9b72,
+    0x403e1b81,
+    0x403e9bb9,
+    0x403f1bd3,
+    0x403f9bfb,
+    0x40401c10,
+    0x40409c24,
+    0x40411c41,
+    0x40419c5c,
+    0x40421c75,
+    0x40429c88,
+    0x40431c9c,
+    0x40439cb4,
+    0x40441ccb,
+    0x404480ac,
+    0x40451ce0,
+    0x40459cf2,
+    0x40461d16,
+    0x40469d36,
+    0x40471d44,
+    0x40479d6b,
+    0x40481ddc,
+    0x40489e0f,
+    0x40491e26,
+    0x40499e40,
+    0x404a1e57,
+    0x404a9e75,
+    0x404b1e8d,
+    0x404b9ea4,
+    0x404c1eba,
+    0x404c9ecc,
+    0x404d1eed,
+    0x404d9f26,
+    0x404e1f3a,
+    0x404e9f47,
+    0x404f1f8e,
+    0x404f9fd4,
+    0x4050202b,
+    0x4050a03f,
+    0x40512072,
+    0x40522082,
+    0x4052a0a6,
+    0x405320be,
+    0x4053a0d1,
+    0x405420e6,
+    0x4054a109,
+    0x40552117,
+    0x4055a154,
+    0x40562161,
+    0x4056a17a,
+    0x40572192,
+    0x4057a1a5,
+    0x405821ba,
+    0x4058a1e1,
+    0x40592210,
+    0x4059a23d,
+    0x405a2251,
+    0x405aa261,
+    0x405b2279,
+    0x405ba28a,
+    0x405c229d,
+    0x405ca2dc,
+    0x405d22e9,
+    0x405da30e,
+    0x405e234c,
+    0x405e8ab3,
+    0x405f236d,
+    0x405fa37a,
+    0x40602388,
+    0x4060a3aa,
+    0x4061240b,
+    0x4061a443,
+    0x4062245a,
+    0x4062a46b,
+    0x40632490,
+    0x4063a4a5,
+    0x406424bc,
+    0x4064a4e8,
+    0x40652503,
+    0x4065a51a,
+    0x40662532,
+    0x4066a55c,
+    0x40672587,
+    0x4067a5cc,
+    0x40682614,
+    0x4068a635,
+    0x40692667,
+    0x4069a695,
+    0x406a26b6,
+    0x406aa6d6,
+    0x406b285e,
+    0x406ba881,
+    0x406c2897,
+    0x406cab3a,
+    0x406d2b69,
+    0x406dab91,
+    0x406e2bbf,
+    0x406eac0c,
+    0x406f2c47,
+    0x406fac7f,
+    0x40702c92,
+    0x4070acaf,
+    0x40710802,
+    0x4071acc1,
+    0x40722cd4,
+    0x4072ad0a,
+    0x40732d22,
+    0x407394fa,
+    0x40742d36,
+    0x4074ad50,
+    0x40752d61,
+    0x4075ad75,
+    0x40762d83,
+    0x407692be,
+    0x40772da8,
+    0x4077adca,
+    0x40782de5,
+    0x4078ae1e,
+    0x40792e35,
+    0x4079ae4b,
+    0x407a2e77,
+    0x407aae8a,
+    0x407b2e9f,
+    0x407baeb1,
+    0x407c2ee2,
+    0x407caeeb,
+    0x407d2650,
+    0x407d9fe4,
+    0x407e2dfa,
+    0x407ea1f1,
+    0x407f1d58,
+    0x407f9afe,
+    0x40801f9e,
+    0x40809d80,
+    0x40812094,
+    0x40819f78,
+    0x40822baa,
+    0x40829ae4,
+    0x408321cc,
+    0x4083a4cd,
+    0x40841d94,
+    0x4084a229,
+    0x408522ae,
+    0x4085a3d2,
+    0x4086232e,
+    0x40869ffe,
+    0x40872bf0,
+    0x4087a420,
+    0x40881b45,
+    0x4088a5df,
+    0x40891b94,
+    0x40899b21,
+    0x408a28cf,
+    0x408a9912,
+    0x408b2ec6,
+    0x408bac5c,
+    0x408c22be,
+    0x408c992e,
+    0x408d1df5,
+    0x408d9dc6,
+    0x408e1f0f,
+    0x408ea134,
+    0x408f25f3,
+    0x408fa3ee,
+    0x409025a8,
+    0x4090a300,
+    0x409128b7,
+    0x40919954,
+    0x40921be1,
+    0x4092ac2b,
+    0x40932ced,
+    0x4093a00f,
+    0x40941da8,
+    0x4094a8e8,
+    0x4095247c,
+    0x4095ae57,
+    0x40962bd7,
+    0x40969fb7,
+    0x4097205a,
+    0x40979f5e,
+    0x41f42789,
+    0x41f9281b,
+    0x41fe270e,
+    0x41fea92b,
+    0x41ff2a1c,
+    0x420327a2,
+    0x420827c4,
+    0x4208a800,
+    0x420926f2,
+    0x4209a83a,
+    0x420a2749,
+    0x420aa729,
+    0x420b2769,
+    0x420ba7e2,
+    0x420c2a38,
+    0x420ca8f8,
+    0x420d2912,
+    0x420da949,
+    0x42122963,
+    0x421729ff,
+    0x4217a9a5,
+    0x421c29c7,
+    0x421f2982,
+    0x42212a4f,
+    0x422629e2,
+    0x422b2b1e,
+    0x422baacc,
+    0x422c2b06,
+    0x422caa8b,
+    0x422d2a6a,
+    0x422daaeb,
+    0x422e2ab1,
+    0x4432072d,
+    0x4432873c,
+    0x44330748,
+    0x44338756,
+    0x44340769,
+    0x4434877a,
+    0x44350781,
+    0x4435878b,
+    0x4436079e,
+    0x443687b4,
+    0x443707c6,
+    0x443787d3,
+    0x443807e2,
+    0x443887ea,
+    0x44390802,
+    0x44398810,
+    0x443a0823,
+    0x483212e8,
+    0x483292fa,
+    0x48331310,
+    0x48339329,
+    0x4c32134e,
+    0x4c32935e,
+    0x4c331371,
+    0x4c339391,
+    0x4c3400ac,
+    0x4c3480ea,
+    0x4c35139d,
+    0x4c3593ab,
+    0x4c3613c7,
+    0x4c3693ed,
+    0x4c3713fc,
+    0x4c37940a,
+    0x4c38141f,
+    0x4c38942b,
+    0x4c39144b,
+    0x4c399475,
+    0x4c3a148e,
+    0x4c3a94a7,
+    0x4c3b05fd,
+    0x4c3b94c0,
+    0x4c3c14d2,
+    0x4c3c94e1,
+    0x4c3d14fa,
+    0x4c3d8c47,
+    0x4c3e1567,
+    0x4c3e9509,
+    0x4c3f1589,
+    0x4c3f92be,
+    0x4c40151f,
+    0x4c40933a,
+    0x4c411557,
+    0x4c4193da,
+    0x4c421543,
+    0x50323141,
+    0x5032b150,
+    0x5033315b,
+    0x5033b16b,
+    0x50343184,
+    0x5034b19e,
+    0x503531ac,
+    0x5035b1c2,
+    0x503631d4,
+    0x5036b1ea,
+    0x50373203,
+    0x5037b216,
+    0x5038322e,
+    0x5038b23f,
+    0x50393254,
+    0x5039b268,
+    0x503a3288,
+    0x503ab29e,
+    0x503b32b6,
+    0x503bb2c8,
+    0x503c32e4,
+    0x503cb2fb,
+    0x503d3314,
+    0x503db32a,
+    0x503e3337,
+    0x503eb34d,
+    0x503f335f,
+    0x503f837b,
+    0x50403372,
+    0x5040b382,
+    0x5041339c,
+    0x5041b3ab,
+    0x504233c5,
+    0x5042b3e2,
+    0x504333f2,
+    0x5043b402,
+    0x50443411,
+    0x50448431,
+    0x50453425,
+    0x5045b443,
+    0x50463456,
+    0x5046b46c,
+    0x5047347e,
+    0x5047b493,
+    0x504834b9,
+    0x5048b4c7,
+    0x504934da,
+    0x5049b4ef,
+    0x504a3505,
+    0x504ab515,
+    0x504b3535,
+    0x504bb548,
+    0x504c356b,
+    0x504cb599,
+    0x504d35ab,
+    0x504db5c8,
+    0x504e35e3,
+    0x504eb5ff,
+    0x504f3611,
+    0x504fb628,
+    0x50503637,
+    0x505086f1,
+    0x5051364a,
+    0x58320f65,
+    0x68320f27,
+    0x68328c7f,
+    0x68330c92,
+    0x68338f35,
+    0x68340f45,
+    0x683480ea,
+    0x6c320eed,
+    0x6c328c36,
+    0x6c330ef8,
+    0x6c338f11,
+    0x74320a1b,
+    0x743280ac,
+    0x74330c47,
+    0x78320980,
+    0x78328995,
+    0x783309a1,
+    0x78338083,
+    0x783409b0,
+    0x783489c5,
+    0x783509e4,
+    0x78358a06,
+    0x78360a1b,
+    0x78368a31,
+    0x78370a41,
+    0x78378a62,
+    0x78380a75,
+    0x78388a87,
+    0x78390a94,
+    0x78398ab3,
+    0x783a0ac8,
+    0x783a8ad6,
+    0x783b0ae0,
+    0x783b8af4,
+    0x783c0b0b,
+    0x783c8b20,
+    0x783d0b37,
+    0x783d8b4c,
+    0x783e0aa2,
+    0x783e8a54,
+    0x7c3211d7,
+};
+
+const size_t kOpenSSLReasonValuesLen = sizeof(kOpenSSLReasonValues) / sizeof(kOpenSSLReasonValues[0]);
+
+const char kOpenSSLReasonStringData[] =
+    "ASN1_LENGTH_MISMATCH\0"
+    "AUX_ERROR\0"
+    "BAD_GET_ASN1_OBJECT_CALL\0"
+    "BAD_OBJECT_HEADER\0"
+    "BMPSTRING_IS_WRONG_LENGTH\0"
+    "BN_LIB\0"
+    "BOOLEAN_IS_WRONG_LENGTH\0"
+    "BUFFER_TOO_SMALL\0"
+    "CONTEXT_NOT_INITIALISED\0"
+    "DECODE_ERROR\0"
+    "DEPTH_EXCEEDED\0"
+    "DIGEST_AND_KEY_TYPE_NOT_SUPPORTED\0"
+    "ENCODE_ERROR\0"
+    "ERROR_GETTING_TIME\0"
+    "EXPECTING_AN_ASN1_SEQUENCE\0"
+    "EXPECTING_AN_INTEGER\0"
+    "EXPECTING_AN_OBJECT\0"
+    "EXPECTING_A_BOOLEAN\0"
+    "EXPECTING_A_TIME\0"
+    "EXPLICIT_LENGTH_MISMATCH\0"
+    "EXPLICIT_TAG_NOT_CONSTRUCTED\0"
+    "FIELD_MISSING\0"
+    "FIRST_NUM_TOO_LARGE\0"
+    "HEADER_TOO_LONG\0"
+    "ILLEGAL_BITSTRING_FORMAT\0"
+    "ILLEGAL_BOOLEAN\0"
+    "ILLEGAL_CHARACTERS\0"
+    "ILLEGAL_FORMAT\0"
+    "ILLEGAL_HEX\0"
+    "ILLEGAL_IMPLICIT_TAG\0"
+    "ILLEGAL_INTEGER\0"
+    "ILLEGAL_NESTED_TAGGING\0"
+    "ILLEGAL_NULL\0"
+    "ILLEGAL_NULL_VALUE\0"
+    "ILLEGAL_OBJECT\0"
+    "ILLEGAL_OPTIONAL_ANY\0"
+    "ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE\0"
+    "ILLEGAL_TAGGED_ANY\0"
+    "ILLEGAL_TIME_VALUE\0"
+    "INTEGER_NOT_ASCII_FORMAT\0"
+    "INTEGER_TOO_LARGE_FOR_LONG\0"
+    "INVALID_BIT_STRING_BITS_LEFT\0"
+    "INVALID_BMPSTRING\0"
+    "INVALID_DIGIT\0"
+    "INVALID_MODIFIER\0"
+    "INVALID_NUMBER\0"
+    "INVALID_OBJECT_ENCODING\0"
+    "INVALID_SEPARATOR\0"
+    "INVALID_TIME_FORMAT\0"
+    "INVALID_UNIVERSALSTRING\0"
+    "INVALID_UTF8STRING\0"
+    "LIST_ERROR\0"
+    "MISSING_ASN1_EOS\0"
+    "MISSING_EOC\0"
+    "MISSING_SECOND_NUMBER\0"
+    "MISSING_VALUE\0"
+    "MSTRING_NOT_UNIVERSAL\0"
+    "MSTRING_WRONG_TAG\0"
+    "NESTED_ASN1_ERROR\0"
+    "NESTED_ASN1_STRING\0"
+    "NESTED_TOO_DEEP\0"
+    "NON_HEX_CHARACTERS\0"
+    "NOT_ASCII_FORMAT\0"
+    "NOT_ENOUGH_DATA\0"
+    "NO_MATCHING_CHOICE_TYPE\0"
+    "NULL_IS_WRONG_LENGTH\0"
+    "OBJECT_NOT_ASCII_FORMAT\0"
+    "ODD_NUMBER_OF_CHARS\0"
+    "SECOND_NUMBER_TOO_LARGE\0"
+    "SEQUENCE_LENGTH_MISMATCH\0"
+    "SEQUENCE_NOT_CONSTRUCTED\0"
+    "SEQUENCE_OR_SET_NEEDS_CONFIG\0"
+    "SHORT_LINE\0"
+    "STREAMING_NOT_SUPPORTED\0"
+    "STRING_TOO_LONG\0"
+    "STRING_TOO_SHORT\0"
+    "TAG_VALUE_TOO_HIGH\0"
+    "TIME_NOT_ASCII_FORMAT\0"
+    "TOO_LONG\0"
+    "TYPE_NOT_CONSTRUCTED\0"
+    "TYPE_NOT_PRIMITIVE\0"
+    "UNEXPECTED_EOC\0"
+    "UNIVERSALSTRING_IS_WRONG_LENGTH\0"
+    "UNKNOWN_FORMAT\0"
+    "UNKNOWN_MESSAGE_DIGEST_ALGORITHM\0"
+    "UNKNOWN_SIGNATURE_ALGORITHM\0"
+    "UNKNOWN_TAG\0"
+    "UNSUPPORTED_ANY_DEFINED_BY_TYPE\0"
+    "UNSUPPORTED_PUBLIC_KEY_TYPE\0"
+    "UNSUPPORTED_TYPE\0"
+    "WRONG_PUBLIC_KEY_TYPE\0"
+    "WRONG_TAG\0"
+    "WRONG_TYPE\0"
+    "BAD_FOPEN_MODE\0"
+    "BROKEN_PIPE\0"
+    "CONNECT_ERROR\0"
+    "ERROR_SETTING_NBIO\0"
+    "INVALID_ARGUMENT\0"
+    "IN_USE\0"
+    "KEEPALIVE\0"
+    "NBIO_CONNECT_ERROR\0"
+    "NO_HOSTNAME_SPECIFIED\0"
+    "NO_PORT_SPECIFIED\0"
+    "NO_SUCH_FILE\0"
+    "NULL_PARAMETER\0"
+    "SYS_LIB\0"
+    "UNABLE_TO_CREATE_SOCKET\0"
+    "UNINITIALIZED\0"
+    "UNSUPPORTED_METHOD\0"
+    "WRITE_TO_READ_ONLY_BIO\0"
+    "ARG2_LT_ARG3\0"
+    "BAD_ENCODING\0"
+    "BAD_RECIPROCAL\0"
+    "BIGNUM_TOO_LONG\0"
+    "BITS_TOO_SMALL\0"
+    "CALLED_WITH_EVEN_MODULUS\0"
+    "DIV_BY_ZERO\0"
+    "EXPAND_ON_STATIC_BIGNUM_DATA\0"
+    "INPUT_NOT_REDUCED\0"
+    "INVALID_INPUT\0"
+    "INVALID_RANGE\0"
+    "NEGATIVE_NUMBER\0"
+    "NOT_A_SQUARE\0"
+    "NOT_INITIALIZED\0"
+    "NO_INVERSE\0"
+    "PRIVATE_KEY_TOO_LARGE\0"
+    "P_IS_NOT_PRIME\0"
+    "TOO_MANY_ITERATIONS\0"
+    "TOO_MANY_TEMPORARY_VARIABLES\0"
+    "AES_KEY_SETUP_FAILED\0"
+    "BAD_DECRYPT\0"
+    "BAD_KEY_LENGTH\0"
+    "CTRL_NOT_IMPLEMENTED\0"
+    "CTRL_OPERATION_NOT_IMPLEMENTED\0"
+    "DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH\0"
+    "INITIALIZATION_ERROR\0"
+    "INPUT_NOT_INITIALIZED\0"
+    "INVALID_AD_SIZE\0"
+    "INVALID_KEY_LENGTH\0"
+    "INVALID_NONCE\0"
+    "INVALID_NONCE_SIZE\0"
+    "INVALID_OPERATION\0"
+    "IV_TOO_LARGE\0"
+    "NO_CIPHER_SET\0"
+    "NO_DIRECTION_SET\0"
+    "OUTPUT_ALIASES_INPUT\0"
+    "TAG_TOO_LARGE\0"
+    "TOO_LARGE\0"
+    "UNSUPPORTED_AD_SIZE\0"
+    "UNSUPPORTED_INPUT_SIZE\0"
+    "UNSUPPORTED_KEY_SIZE\0"
+    "UNSUPPORTED_NONCE_SIZE\0"
+    "UNSUPPORTED_TAG_SIZE\0"
+    "WRONG_FINAL_BLOCK_LENGTH\0"
+    "LIST_CANNOT_BE_NULL\0"
+    "MISSING_CLOSE_SQUARE_BRACKET\0"
+    "MISSING_EQUAL_SIGN\0"
+    "NO_CLOSE_BRACE\0"
+    "UNABLE_TO_CREATE_NEW_SECTION\0"
+    "VARIABLE_EXPANSION_TOO_LONG\0"
+    "VARIABLE_HAS_NO_VALUE\0"
+    "BAD_GENERATOR\0"
+    "INVALID_PUBKEY\0"
+    "MODULUS_TOO_LARGE\0"
+    "NO_PRIVATE_VALUE\0"
+    "UNKNOWN_HASH\0"
+    "BAD_Q_VALUE\0"
+    "BAD_VERSION\0"
+    "INVALID_PARAMETERS\0"
+    "MISSING_PARAMETERS\0"
+    "NEED_NEW_SETUP_VALUES\0"
+    "BIGNUM_OUT_OF_RANGE\0"
+    "COORDINATES_OUT_OF_RANGE\0"
+    "D2I_ECPKPARAMETERS_FAILURE\0"
+    "EC_GROUP_NEW_BY_NAME_FAILURE\0"
+    "GROUP2PKPARAMETERS_FAILURE\0"
+    "GROUP_MISMATCH\0"
+    "I2D_ECPKPARAMETERS_FAILURE\0"
+    "INCOMPATIBLE_OBJECTS\0"
+    "INVALID_COFACTOR\0"
+    "INVALID_COMPRESSED_POINT\0"
+    "INVALID_COMPRESSION_BIT\0"
+    "INVALID_ENCODING\0"
+    "INVALID_FIELD\0"
+    "INVALID_FORM\0"
+    "INVALID_GROUP_ORDER\0"
+    "INVALID_PRIVATE_KEY\0"
+    "INVALID_SCALAR\0"
+    "MISSING_PRIVATE_KEY\0"
+    "NON_NAMED_CURVE\0"
+    "PKPARAMETERS2GROUP_FAILURE\0"
+    "POINT_AT_INFINITY\0"
+    "POINT_IS_NOT_ON_CURVE\0"
+    "PUBLIC_KEY_VALIDATION_FAILED\0"
+    "SLOT_FULL\0"
+    "UNDEFINED_GENERATOR\0"
+    "UNKNOWN_GROUP\0"
+    "UNKNOWN_ORDER\0"
+    "WRONG_CURVE_PARAMETERS\0"
+    "WRONG_ORDER\0"
+    "KDF_FAILED\0"
+    "POINT_ARITHMETIC_FAILURE\0"
+    "UNKNOWN_DIGEST_LENGTH\0"
+    "BAD_SIGNATURE\0"
+    "NOT_IMPLEMENTED\0"
+    "RANDOM_NUMBER_GENERATION_FAILED\0"
+    "OPERATION_NOT_SUPPORTED\0"
+    "COMMAND_NOT_SUPPORTED\0"
+    "DIFFERENT_KEY_TYPES\0"
+    "DIFFERENT_PARAMETERS\0"
+    "EXPECTING_AN_EC_KEY_KEY\0"
+    "EXPECTING_AN_RSA_KEY\0"
+    "EXPECTING_A_DSA_KEY\0"
+    "ILLEGAL_OR_UNSUPPORTED_PADDING_MODE\0"
+    "INVALID_DIGEST_LENGTH\0"
+    "INVALID_DIGEST_TYPE\0"
+    "INVALID_KEYBITS\0"
+    "INVALID_MGF1_MD\0"
+    "INVALID_PADDING_MODE\0"
+    "INVALID_PEER_KEY\0"
+    "INVALID_PSS_SALTLEN\0"
+    "INVALID_SIGNATURE\0"
+    "KEYS_NOT_SET\0"
+    "MEMORY_LIMIT_EXCEEDED\0"
+    "NOT_A_PRIVATE_KEY\0"
+    "NOT_XOF_OR_INVALID_LENGTH\0"
+    "NO_DEFAULT_DIGEST\0"
+    "NO_KEY_SET\0"
+    "NO_MDC2_SUPPORT\0"
+    "NO_NID_FOR_CURVE\0"
+    "NO_OPERATION_SET\0"
+    "NO_PARAMETERS_SET\0"
+    "OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE\0"
+    "OPERATON_NOT_INITIALIZED\0"
+    "UNKNOWN_PUBLIC_KEY_TYPE\0"
+    "UNSUPPORTED_ALGORITHM\0"
+    "OUTPUT_TOO_LARGE\0"
+    "INVALID_OID_STRING\0"
+    "UNKNOWN_NID\0"
+    "BAD_BASE64_DECODE\0"
+    "BAD_END_LINE\0"
+    "BAD_IV_CHARS\0"
+    "BAD_PASSWORD_READ\0"
+    "CIPHER_IS_NULL\0"
+    "ERROR_CONVERTING_PRIVATE_KEY\0"
+    "NOT_DEK_INFO\0"
+    "NOT_ENCRYPTED\0"
+    "NOT_PROC_TYPE\0"
+    "NO_START_LINE\0"
+    "READ_KEY\0"
+    "SHORT_HEADER\0"
+    "UNSUPPORTED_CIPHER\0"
+    "UNSUPPORTED_ENCRYPTION\0"
+    "BAD_PKCS7_VERSION\0"
+    "NOT_PKCS7_SIGNED_DATA\0"
+    "NO_CERTIFICATES_INCLUDED\0"
+    "NO_CRLS_INCLUDED\0"
+    "BAD_ITERATION_COUNT\0"
+    "BAD_PKCS12_DATA\0"
+    "BAD_PKCS12_VERSION\0"
+    "CIPHER_HAS_NO_OBJECT_IDENTIFIER\0"
+    "CRYPT_ERROR\0"
+    "ENCRYPT_ERROR\0"
+    "ERROR_SETTING_CIPHER_PARAMS\0"
+    "INCORRECT_PASSWORD\0"
+    "INVALID_CHARACTERS\0"
+    "KEYGEN_FAILURE\0"
+    "KEY_GEN_ERROR\0"
+    "METHOD_NOT_SUPPORTED\0"
+    "MISSING_MAC\0"
+    "MULTIPLE_PRIVATE_KEYS_IN_PKCS12\0"
+    "PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED\0"
+    "PKCS12_TOO_DEEPLY_NESTED\0"
+    "PRIVATE_KEY_DECODE_ERROR\0"
+    "PRIVATE_KEY_ENCODE_ERROR\0"
+    "UNKNOWN_ALGORITHM\0"
+    "UNKNOWN_CIPHER\0"
+    "UNKNOWN_CIPHER_ALGORITHM\0"
+    "UNKNOWN_DIGEST\0"
+    "UNSUPPORTED_KEYLENGTH\0"
+    "UNSUPPORTED_KEY_DERIVATION_FUNCTION\0"
+    "UNSUPPORTED_OPTIONS\0"
+    "UNSUPPORTED_PRF\0"
+    "UNSUPPORTED_PRIVATE_KEY_ALGORITHM\0"
+    "UNSUPPORTED_SALT_TYPE\0"
+    "BAD_E_VALUE\0"
+    "BAD_FIXED_HEADER_DECRYPT\0"
+    "BAD_PAD_BYTE_COUNT\0"
+    "BAD_RSA_PARAMETERS\0"
+    "BLOCK_TYPE_IS_NOT_01\0"
+    "BLOCK_TYPE_IS_NOT_02\0"
+    "BN_NOT_INITIALIZED\0"
+    "CANNOT_RECOVER_MULTI_PRIME_KEY\0"
+    "CRT_PARAMS_ALREADY_GIVEN\0"
+    "CRT_VALUES_INCORRECT\0"
+    "DATA_LEN_NOT_EQUAL_TO_MOD_LEN\0"
+    "DATA_TOO_LARGE\0"
+    "DATA_TOO_LARGE_FOR_KEY_SIZE\0"
+    "DATA_TOO_LARGE_FOR_MODULUS\0"
+    "DATA_TOO_SMALL\0"
+    "DATA_TOO_SMALL_FOR_KEY_SIZE\0"
+    "DIGEST_TOO_BIG_FOR_RSA_KEY\0"
+    "D_E_NOT_CONGRUENT_TO_1\0"
+    "D_OUT_OF_RANGE\0"
+    "EMPTY_PUBLIC_KEY\0"
+    "FIRST_OCTET_INVALID\0"
+    "INCONSISTENT_SET_OF_CRT_VALUES\0"
+    "INTERNAL_ERROR\0"
+    "INVALID_MESSAGE_LENGTH\0"
+    "KEY_SIZE_TOO_SMALL\0"
+    "LAST_OCTET_INVALID\0"
+    "MUST_HAVE_AT_LEAST_TWO_PRIMES\0"
+    "NO_PUBLIC_EXPONENT\0"
+    "NULL_BEFORE_BLOCK_MISSING\0"
+    "N_NOT_EQUAL_P_Q\0"
+    "OAEP_DECODING_ERROR\0"
+    "ONLY_ONE_OF_P_Q_GIVEN\0"
+    "OUTPUT_BUFFER_TOO_SMALL\0"
+    "PADDING_CHECK_FAILED\0"
+    "PKCS_DECODING_ERROR\0"
+    "SLEN_CHECK_FAILED\0"
+    "SLEN_RECOVERY_FAILED\0"
+    "UNKNOWN_ALGORITHM_TYPE\0"
+    "UNKNOWN_PADDING_TYPE\0"
+    "VALUE_MISSING\0"
+    "WRONG_SIGNATURE_LENGTH\0"
+    "ALPN_MISMATCH_ON_EARLY_DATA\0"
+    "APPLICATION_DATA_INSTEAD_OF_HANDSHAKE\0"
+    "APPLICATION_DATA_ON_SHUTDOWN\0"
+    "APP_DATA_IN_HANDSHAKE\0"
+    "ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT\0"
+    "BAD_ALERT\0"
+    "BAD_CHANGE_CIPHER_SPEC\0"
+    "BAD_DATA_RETURNED_BY_CALLBACK\0"
+    "BAD_DH_P_LENGTH\0"
+    "BAD_DIGEST_LENGTH\0"
+    "BAD_ECC_CERT\0"
+    "BAD_ECPOINT\0"
+    "BAD_HANDSHAKE_RECORD\0"
+    "BAD_HELLO_REQUEST\0"
+    "BAD_LENGTH\0"
+    "BAD_PACKET_LENGTH\0"
+    "BAD_RSA_ENCRYPT\0"
+    "BAD_SRTP_MKI_VALUE\0"
+    "BAD_SRTP_PROTECTION_PROFILE_LIST\0"
+    "BAD_SSL_FILETYPE\0"
+    "BAD_WRITE_RETRY\0"
+    "BIO_NOT_SET\0"
+    "BLOCK_CIPHER_PAD_IS_WRONG\0"
+    "BUFFERED_MESSAGES_ON_CIPHER_CHANGE\0"
+    "CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD\0"
+    "CANNOT_PARSE_LEAF_CERT\0"
+    "CA_DN_LENGTH_MISMATCH\0"
+    "CA_DN_TOO_LONG\0"
+    "CCS_RECEIVED_EARLY\0"
+    "CERTIFICATE_AND_PRIVATE_KEY_MISMATCH\0"
+    "CERTIFICATE_VERIFY_FAILED\0"
+    "CERT_CB_ERROR\0"
+    "CERT_DECOMPRESSION_FAILED\0"
+    "CERT_LENGTH_MISMATCH\0"
+    "CHANNEL_ID_NOT_P256\0"
+    "CHANNEL_ID_SIGNATURE_INVALID\0"
+    "CIPHER_OR_HASH_UNAVAILABLE\0"
+    "CLIENTHELLO_PARSE_FAILED\0"
+    "CLIENTHELLO_TLSEXT\0"
+    "CONNECTION_REJECTED\0"
+    "CONNECTION_TYPE_NOT_SET\0"
+    "CUSTOM_EXTENSION_ERROR\0"
+    "DATA_LENGTH_TOO_LONG\0"
+    "DECRYPTION_FAILED\0"
+    "DECRYPTION_FAILED_OR_BAD_RECORD_MAC\0"
+    "DH_PUBLIC_VALUE_LENGTH_IS_WRONG\0"
+    "DH_P_TOO_LONG\0"
+    "DIGEST_CHECK_FAILED\0"
+    "DOWNGRADE_DETECTED\0"
+    "DTLS_MESSAGE_TOO_BIG\0"
+    "DUPLICATE_EXTENSION\0"
+    "DUPLICATE_KEY_SHARE\0"
+    "DUPLICATE_SIGNATURE_ALGORITHM\0"
+    "EARLY_DATA_NOT_IN_USE\0"
+    "ECC_CERT_NOT_FOR_SIGNING\0"
+    "EMPTY_HELLO_RETRY_REQUEST\0"
+    "EMS_STATE_INCONSISTENT\0"
+    "ENCRYPTED_LENGTH_TOO_LONG\0"
+    "ERROR_ADDING_EXTENSION\0"
+    "ERROR_IN_RECEIVED_CIPHER_LIST\0"
+    "ERROR_PARSING_EXTENSION\0"
+    "EXCESSIVE_MESSAGE_SIZE\0"
+    "EXTRA_DATA_IN_MESSAGE\0"
+    "FRAGMENT_MISMATCH\0"
+    "GOT_NEXT_PROTO_WITHOUT_EXTENSION\0"
+    "HANDSHAKE_FAILURE_ON_CLIENT_HELLO\0"
+    "HANDSHAKE_NOT_COMPLETE\0"
+    "HTTPS_PROXY_REQUEST\0"
+    "HTTP_REQUEST\0"
+    "INAPPROPRIATE_FALLBACK\0"
+    "INCONSISTENT_CLIENT_HELLO\0"
+    "INVALID_ALPN_PROTOCOL\0"
+    "INVALID_COMMAND\0"
+    "INVALID_COMPRESSION_LIST\0"
+    "INVALID_DELEGATED_CREDENTIAL\0"
+    "INVALID_MESSAGE\0"
+    "INVALID_OUTER_RECORD_TYPE\0"
+    "INVALID_SCT_LIST\0"
+    "INVALID_SIGNATURE_ALGORITHM\0"
+    "INVALID_SSL_SESSION\0"
+    "INVALID_TICKET_KEYS_LENGTH\0"
+    "KEY_USAGE_BIT_INCORRECT\0"
+    "LENGTH_MISMATCH\0"
+    "MISSING_EXTENSION\0"
+    "MISSING_KEY_SHARE\0"
+    "MISSING_RSA_CERTIFICATE\0"
+    "MISSING_TMP_DH_KEY\0"
+    "MISSING_TMP_ECDH_KEY\0"
+    "MIXED_SPECIAL_OPERATOR_WITH_GROUPS\0"
+    "MTU_TOO_SMALL\0"
+    "NEGOTIATED_BOTH_NPN_AND_ALPN\0"
+    "NEGOTIATED_TB_WITHOUT_EMS_OR_RI\0"
+    "NESTED_GROUP\0"
+    "NO_CERTIFICATES_RETURNED\0"
+    "NO_CERTIFICATE_ASSIGNED\0"
+    "NO_CERTIFICATE_SET\0"
+    "NO_CIPHERS_AVAILABLE\0"
+    "NO_CIPHERS_PASSED\0"
+    "NO_CIPHERS_SPECIFIED\0"
+    "NO_CIPHER_MATCH\0"
+    "NO_COMMON_SIGNATURE_ALGORITHMS\0"
+    "NO_COMPRESSION_SPECIFIED\0"
+    "NO_GROUPS_SPECIFIED\0"
+    "NO_METHOD_SPECIFIED\0"
+    "NO_P256_SUPPORT\0"
+    "NO_PRIVATE_KEY_ASSIGNED\0"
+    "NO_RENEGOTIATION\0"
+    "NO_REQUIRED_DIGEST\0"
+    "NO_SHARED_CIPHER\0"
+    "NO_SHARED_GROUP\0"
+    "NO_SUPPORTED_VERSIONS_ENABLED\0"
+    "NULL_SSL_CTX\0"
+    "NULL_SSL_METHOD_PASSED\0"
+    "OCSP_CB_ERROR\0"
+    "OLD_SESSION_CIPHER_NOT_RETURNED\0"
+    "OLD_SESSION_PRF_HASH_MISMATCH\0"
+    "OLD_SESSION_VERSION_NOT_RETURNED\0"
+    "PARSE_TLSEXT\0"
+    "PATH_TOO_LONG\0"
+    "PEER_DID_NOT_RETURN_A_CERTIFICATE\0"
+    "PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE\0"
+    "PRE_SHARED_KEY_MUST_BE_LAST\0"
+    "PRIVATE_KEY_OPERATION_FAILED\0"
+    "PROTOCOL_IS_SHUTDOWN\0"
+    "PSK_IDENTITY_BINDER_COUNT_MISMATCH\0"
+    "PSK_IDENTITY_NOT_FOUND\0"
+    "PSK_NO_CLIENT_CB\0"
+    "PSK_NO_SERVER_CB\0"
+    "QUIC_INTERNAL_ERROR\0"
+    "READ_TIMEOUT_EXPIRED\0"
+    "RECORD_LENGTH_MISMATCH\0"
+    "RECORD_TOO_LARGE\0"
+    "RENEGOTIATION_EMS_MISMATCH\0"
+    "RENEGOTIATION_ENCODING_ERR\0"
+    "RENEGOTIATION_MISMATCH\0"
+    "REQUIRED_CIPHER_MISSING\0"
+    "RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION\0"
+    "RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION\0"
+    "SCSV_RECEIVED_WHEN_RENEGOTIATING\0"
+    "SECOND_SERVERHELLO_VERSION_MISMATCH\0"
+    "SERVERHELLO_TLSEXT\0"
+    "SERVER_CERT_CHANGED\0"
+    "SERVER_ECHOED_INVALID_SESSION_ID\0"
+    "SESSION_ID_CONTEXT_UNINITIALIZED\0"
+    "SESSION_MAY_NOT_BE_CREATED\0"
+    "SHUTDOWN_WHILE_IN_INIT\0"
+    "SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER\0"
+    "SRTP_COULD_NOT_ALLOCATE_PROFILES\0"
+    "SRTP_UNKNOWN_PROTECTION_PROFILE\0"
+    "SSL3_EXT_INVALID_SERVERNAME\0"
+    "SSLV3_ALERT_BAD_CERTIFICATE\0"
+    "SSLV3_ALERT_BAD_RECORD_MAC\0"
+    "SSLV3_ALERT_CERTIFICATE_EXPIRED\0"
+    "SSLV3_ALERT_CERTIFICATE_REVOKED\0"
+    "SSLV3_ALERT_CERTIFICATE_UNKNOWN\0"
+    "SSLV3_ALERT_CLOSE_NOTIFY\0"
+    "SSLV3_ALERT_DECOMPRESSION_FAILURE\0"
+    "SSLV3_ALERT_HANDSHAKE_FAILURE\0"
+    "SSLV3_ALERT_ILLEGAL_PARAMETER\0"
+    "SSLV3_ALERT_NO_CERTIFICATE\0"
+    "SSLV3_ALERT_UNEXPECTED_MESSAGE\0"
+    "SSLV3_ALERT_UNSUPPORTED_CERTIFICATE\0"
+    "SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION\0"
+    "SSL_HANDSHAKE_FAILURE\0"
+    "SSL_SESSION_ID_CONTEXT_TOO_LONG\0"
+    "SSL_SESSION_ID_TOO_LONG\0"
+    "TICKET_ENCRYPTION_FAILED\0"
+    "TLS13_DOWNGRADE\0"
+    "TLSV1_ALERT_ACCESS_DENIED\0"
+    "TLSV1_ALERT_DECODE_ERROR\0"
+    "TLSV1_ALERT_DECRYPTION_FAILED\0"
+    "TLSV1_ALERT_DECRYPT_ERROR\0"
+    "TLSV1_ALERT_EXPORT_RESTRICTION\0"
+    "TLSV1_ALERT_INAPPROPRIATE_FALLBACK\0"
+    "TLSV1_ALERT_INSUFFICIENT_SECURITY\0"
+    "TLSV1_ALERT_INTERNAL_ERROR\0"
+    "TLSV1_ALERT_NO_RENEGOTIATION\0"
+    "TLSV1_ALERT_PROTOCOL_VERSION\0"
+    "TLSV1_ALERT_RECORD_OVERFLOW\0"
+    "TLSV1_ALERT_UNKNOWN_CA\0"
+    "TLSV1_ALERT_USER_CANCELLED\0"
+    "TLSV1_BAD_CERTIFICATE_HASH_VALUE\0"
+    "TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE\0"
+    "TLSV1_CERTIFICATE_REQUIRED\0"
+    "TLSV1_CERTIFICATE_UNOBTAINABLE\0"
+    "TLSV1_UNKNOWN_PSK_IDENTITY\0"
+    "TLSV1_UNRECOGNIZED_NAME\0"
+    "TLSV1_UNSUPPORTED_EXTENSION\0"
+    "TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST\0"
+    "TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG\0"
+    "TOO_MANY_EMPTY_FRAGMENTS\0"
+    "TOO_MANY_KEY_UPDATES\0"
+    "TOO_MANY_WARNING_ALERTS\0"
+    "TOO_MUCH_READ_EARLY_DATA\0"
+    "TOO_MUCH_SKIPPED_EARLY_DATA\0"
+    "UNABLE_TO_FIND_ECDH_PARAMETERS\0"
+    "UNCOMPRESSED_CERT_TOO_LARGE\0"
+    "UNEXPECTED_EXTENSION\0"
+    "UNEXPECTED_EXTENSION_ON_EARLY_DATA\0"
+    "UNEXPECTED_MESSAGE\0"
+    "UNEXPECTED_OPERATOR_IN_GROUP\0"
+    "UNEXPECTED_RECORD\0"
+    "UNKNOWN_ALERT_TYPE\0"
+    "UNKNOWN_CERTIFICATE_TYPE\0"
+    "UNKNOWN_CERT_COMPRESSION_ALG\0"
+    "UNKNOWN_CIPHER_RETURNED\0"
+    "UNKNOWN_CIPHER_TYPE\0"
+    "UNKNOWN_KEY_EXCHANGE_TYPE\0"
+    "UNKNOWN_PROTOCOL\0"
+    "UNKNOWN_SSL_VERSION\0"
+    "UNKNOWN_STATE\0"
+    "UNSAFE_LEGACY_RENEGOTIATION_DISABLED\0"
+    "UNSUPPORTED_COMPRESSION_ALGORITHM\0"
+    "UNSUPPORTED_ELLIPTIC_CURVE\0"
+    "UNSUPPORTED_PROTOCOL\0"
+    "UNSUPPORTED_PROTOCOL_FOR_CUSTOM_KEY\0"
+    "WRONG_CERTIFICATE_TYPE\0"
+    "WRONG_CIPHER_RETURNED\0"
+    "WRONG_CURVE\0"
+    "WRONG_ENCRYPTION_LEVEL_RECEIVED\0"
+    "WRONG_MESSAGE_TYPE\0"
+    "WRONG_SIGNATURE_TYPE\0"
+    "WRONG_SSL_VERSION\0"
+    "WRONG_VERSION_NUMBER\0"
+    "WRONG_VERSION_ON_EARLY_DATA\0"
+    "X509_LIB\0"
+    "X509_VERIFICATION_SETUP_PROBLEMS\0"
+    "AKID_MISMATCH\0"
+    "BAD_X509_FILETYPE\0"
+    "BASE64_DECODE_ERROR\0"
+    "CANT_CHECK_DH_KEY\0"
+    "CERT_ALREADY_IN_HASH_TABLE\0"
+    "CRL_ALREADY_DELTA\0"
+    "CRL_VERIFY_FAILURE\0"
+    "IDP_MISMATCH\0"
+    "INVALID_DIRECTORY\0"
+    "INVALID_FIELD_NAME\0"
+    "INVALID_PARAMETER\0"
+    "INVALID_PSS_PARAMETERS\0"
+    "INVALID_TRUST\0"
+    "ISSUER_MISMATCH\0"
+    "KEY_TYPE_MISMATCH\0"
+    "KEY_VALUES_MISMATCH\0"
+    "LOADING_CERT_DIR\0"
+    "LOADING_DEFAULTS\0"
+    "NAME_TOO_LONG\0"
+    "NEWER_CRL_NOT_NEWER\0"
+    "NO_CERT_SET_FOR_US_TO_VERIFY\0"
+    "NO_CRL_NUMBER\0"
+    "PUBLIC_KEY_DECODE_ERROR\0"
+    "PUBLIC_KEY_ENCODE_ERROR\0"
+    "SHOULD_RETRY\0"
+    "SIGNATURE_ALGORITHM_MISMATCH\0"
+    "UNKNOWN_KEY_TYPE\0"
+    "UNKNOWN_PURPOSE_ID\0"
+    "UNKNOWN_TRUST_ID\0"
+    "WRONG_LOOKUP_TYPE\0"
+    "BAD_IP_ADDRESS\0"
+    "BAD_OBJECT\0"
+    "BN_DEC2BN_ERROR\0"
+    "BN_TO_ASN1_INTEGER_ERROR\0"
+    "CANNOT_FIND_FREE_FUNCTION\0"
+    "DIRNAME_ERROR\0"
+    "DISTPOINT_ALREADY_SET\0"
+    "DUPLICATE_ZONE_ID\0"
+    "ERROR_CONVERTING_ZONE\0"
+    "ERROR_CREATING_EXTENSION\0"
+    "ERROR_IN_EXTENSION\0"
+    "EXPECTED_A_SECTION_NAME\0"
+    "EXTENSION_EXISTS\0"
+    "EXTENSION_NAME_ERROR\0"
+    "EXTENSION_NOT_FOUND\0"
+    "EXTENSION_SETTING_NOT_SUPPORTED\0"
+    "EXTENSION_VALUE_ERROR\0"
+    "ILLEGAL_EMPTY_EXTENSION\0"
+    "ILLEGAL_HEX_DIGIT\0"
+    "INCORRECT_POLICY_SYNTAX_TAG\0"
+    "INVALID_BOOLEAN_STRING\0"
+    "INVALID_EXTENSION_STRING\0"
+    "INVALID_MULTIPLE_RDNS\0"
+    "INVALID_NAME\0"
+    "INVALID_NULL_ARGUMENT\0"
+    "INVALID_NULL_NAME\0"
+    "INVALID_NULL_VALUE\0"
+    "INVALID_NUMBERS\0"
+    "INVALID_OBJECT_IDENTIFIER\0"
+    "INVALID_OPTION\0"
+    "INVALID_POLICY_IDENTIFIER\0"
+    "INVALID_PROXY_POLICY_SETTING\0"
+    "INVALID_PURPOSE\0"
+    "INVALID_SECTION\0"
+    "INVALID_SYNTAX\0"
+    "ISSUER_DECODE_ERROR\0"
+    "NEED_ORGANIZATION_AND_NUMBERS\0"
+    "NO_CONFIG_DATABASE\0"
+    "NO_ISSUER_CERTIFICATE\0"
+    "NO_ISSUER_DETAILS\0"
+    "NO_POLICY_IDENTIFIER\0"
+    "NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED\0"
+    "NO_PUBLIC_KEY\0"
+    "NO_SUBJECT_DETAILS\0"
+    "ODD_NUMBER_OF_DIGITS\0"
+    "OPERATION_NOT_DEFINED\0"
+    "OTHERNAME_ERROR\0"
+    "POLICY_LANGUAGE_ALREADY_DEFINED\0"
+    "POLICY_PATH_LENGTH\0"
+    "POLICY_PATH_LENGTH_ALREADY_DEFINED\0"
+    "POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY\0"
+    "SECTION_NOT_FOUND\0"
+    "UNABLE_TO_GET_ISSUER_DETAILS\0"
+    "UNABLE_TO_GET_ISSUER_KEYID\0"
+    "UNKNOWN_BIT_STRING_ARGUMENT\0"
+    "UNKNOWN_EXTENSION\0"
+    "UNKNOWN_EXTENSION_NAME\0"
+    "UNKNOWN_OPTION\0"
+    "UNSUPPORTED_OPTION\0"
+    "USER_TOO_LONG\0"
+    "";
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c.grpc_back
new file mode 100644
index 0000000..7830d6f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/err_data.c.grpc_back	
@@ -0,0 +1,1407 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+ /* This file was generated by err_data_generate.go. */
+
+#include <openssl/base.h>
+#include <openssl/err.h>
+#include <openssl/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(ERR_LIB_NONE == 1, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_SYS == 2, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BN == 3, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_RSA == 4, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DH == 5, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_EVP == 6, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BUF == 7, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_OBJ == 8, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PEM == 9, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DSA == 10, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_X509 == 11, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ASN1 == 12, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CONF == 13, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CRYPTO == 14, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_EC == 15, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_SSL == 16, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_BIO == 17, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PKCS7 == 18, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_PKCS8 == 19, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_X509V3 == 20, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_RAND == 21, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ENGINE == 22, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_OCSP == 23, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_UI == 24, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_COMP == 25, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ECDSA == 26, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_ECDH == 27, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_HMAC == 28, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_DIGEST == 29, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_CIPHER == 30, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_HKDF == 31, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_LIB_USER == 32, "library value changed");
+OPENSSL_STATIC_ASSERT(ERR_NUM_LIBS == 33, "number of libraries changed");
+
+const uint32_t kOpenSSLReasonValues[] = {
+    0xc32083a,
+    0xc328854,
+    0xc330863,
+    0xc338873,
+    0xc340882,
+    0xc34889b,
+    0xc3508a7,
+    0xc3588c4,
+    0xc3608e4,
+    0xc3688f2,
+    0xc370902,
+    0xc37890f,
+    0xc38091f,
+    0xc38892a,
+    0xc390940,
+    0xc39894f,
+    0xc3a0963,
+    0xc3a8847,
+    0xc3b00ea,
+    0xc3b88d6,
+    0x10320847,
+    0x1032959f,
+    0x103315ab,
+    0x103395c4,
+    0x103415d7,
+    0x10348f27,
+    0x10350c60,
+    0x103595ea,
+    0x10361614,
+    0x10369627,
+    0x10371646,
+    0x1037965f,
+    0x10381674,
+    0x10389692,
+    0x103916a1,
+    0x103996bd,
+    0x103a16d8,
+    0x103a96e7,
+    0x103b1703,
+    0x103b971e,
+    0x103c1744,
+    0x103c80ea,
+    0x103d1755,
+    0x103d9769,
+    0x103e1788,
+    0x103e9797,
+    0x103f17ae,
+    0x103f97c1,
+    0x10400c24,
+    0x104097d4,
+    0x104117f2,
+    0x10419805,
+    0x1042181f,
+    0x1042982f,
+    0x10431843,
+    0x10439859,
+    0x10441871,
+    0x10449886,
+    0x1045189a,
+    0x104598ac,
+    0x104605fd,
+    0x1046894f,
+    0x104718c1,
+    0x104798d8,
+    0x104818ed,
+    0x104898fb,
+    0x10490e73,
+    0x10499735,
+    0x104a15ff,
+    0x14320c07,
+    0x14328c15,
+    0x14330c24,
+    0x14338c36,
+    0x143400ac,
+    0x143480ea,
+    0x18320083,
+    0x18328f7d,
+    0x183300ac,
+    0x18338f93,
+    0x18340fa7,
+    0x183480ea,
+    0x18350fbc,
+    0x18358fd4,
+    0x18360fe9,
+    0x18368ffd,
+    0x18371021,
+    0x18379037,
+    0x1838104b,
+    0x1838905b,
+    0x18390a75,
+    0x1839906b,
+    0x183a1091,
+    0x183a90b7,
+    0x183b0c7f,
+    0x183b9106,
+    0x183c1118,
+    0x183c9123,
+    0x183d1133,
+    0x183d9144,
+    0x183e1155,
+    0x183e9167,
+    0x183f1190,
+    0x183f91a9,
+    0x184011c1,
+    0x184086d5,
+    0x184110da,
+    0x184190a5,
+    0x184210c4,
+    0x18428c6c,
+    0x18431080,
+    0x184390ec,
+    0x203211fb,
+    0x203291e8,
+    0x24321207,
+    0x24328995,
+    0x24331219,
+    0x24339226,
+    0x24341233,
+    0x24349245,
+    0x24351254,
+    0x24359271,
+    0x2436127e,
+    0x2436928c,
+    0x2437129a,
+    0x243792a8,
+    0x243812b1,
+    0x243892be,
+    0x243912d1,
+    0x28320c54,
+    0x28328c7f,
+    0x28330c24,
+    0x28338c92,
+    0x28340c60,
+    0x283480ac,
+    0x283500ea,
+    0x28358c6c,
+    0x2c322f0c,
+    0x2c3292e8,
+    0x2c332f1a,
+    0x2c33af2c,
+    0x2c342f40,
+    0x2c34af52,
+    0x2c352f6d,
+    0x2c35af7f,
+    0x2c362f92,
+    0x2c36832d,
+    0x2c372f9f,
+    0x2c37afb1,
+    0x2c382fd6,
+    0x2c38afed,
+    0x2c392ffb,
+    0x2c39b00b,
+    0x2c3a301d,
+    0x2c3ab031,
+    0x2c3b3042,
+    0x2c3bb061,
+    0x2c3c12fa,
+    0x2c3c9310,
+    0x2c3d3075,
+    0x2c3d9329,
+    0x2c3e3092,
+    0x2c3eb0a0,
+    0x2c3f30b8,
+    0x2c3fb0d0,
+    0x2c4030fa,
+    0x2c4091fb,
+    0x2c41310b,
+    0x2c41b11e,
+    0x2c4211c1,
+    0x2c42b12f,
+    0x2c430722,
+    0x2c43b053,
+    0x2c442fc4,
+    0x2c44b0dd,
+    0x30320000,
+    0x30328015,
+    0x3033001f,
+    0x30338038,
+    0x3034004a,
+    0x30348064,
+    0x3035006b,
+    0x30358083,
+    0x30360094,
+    0x303680ac,
+    0x303700b9,
+    0x303780c8,
+    0x303800ea,
+    0x303880f7,
+    0x3039010a,
+    0x30398125,
+    0x303a013a,
+    0x303a814e,
+    0x303b0162,
+    0x303b8173,
+    0x303c018c,
+    0x303c81a9,
+    0x303d01b7,
+    0x303d81cb,
+    0x303e01db,
+    0x303e81f4,
+    0x303f0204,
+    0x303f8217,
+    0x30400226,
+    0x30408232,
+    0x30410247,
+    0x30418257,
+    0x3042026e,
+    0x3042827b,
+    0x3043028e,
+    0x3043829d,
+    0x304402b2,
+    0x304482d3,
+    0x304502e6,
+    0x304582f9,
+    0x30460312,
+    0x3046832d,
+    0x3047034a,
+    0x3047835c,
+    0x3048036a,
+    0x3048837b,
+    0x3049038a,
+    0x304983a2,
+    0x304a03b4,
+    0x304a83c8,
+    0x304b03e0,
+    0x304b83f3,
+    0x304c03fe,
+    0x304c840f,
+    0x304d041b,
+    0x304d8431,
+    0x304e043f,
+    0x304e8455,
+    0x304f0467,
+    0x304f8479,
+    0x3050049c,
+    0x305084af,
+    0x305104c0,
+    0x305184d0,
+    0x305204e8,
+    0x305284fd,
+    0x30530515,
+    0x30538529,
+    0x30540541,
+    0x3054855a,
+    0x30550573,
+    0x30558590,
+    0x3056059b,
+    0x305685b3,
+    0x305705c3,
+    0x305785d4,
+    0x305805e7,
+    0x305885fd,
+    0x30590606,
+    0x3059861b,
+    0x305a062e,
+    0x305a863d,
+    0x305b065d,
+    0x305b866c,
+    0x305c068d,
+    0x305c86a9,
+    0x305d06b5,
+    0x305d86d5,
+    0x305e06f1,
+    0x305e8702,
+    0x305f0718,
+    0x305f8722,
+    0x3060048c,
+    0x34320b65,
+    0x34328b79,
+    0x34330b96,
+    0x34338ba9,
+    0x34340bb8,
+    0x34348bf1,
+    0x34350bd5,
+    0x3c320083,
+    0x3c328cbc,
+    0x3c330cd5,
+    0x3c338cf0,
+    0x3c340d0d,
+    0x3c348d37,
+    0x3c350d52,
+    0x3c358d78,
+    0x3c360d91,
+    0x3c368da9,
+    0x3c370dba,
+    0x3c378dc8,
+    0x3c380dd5,
+    0x3c388de9,
+    0x3c390c7f,
+    0x3c398e0c,
+    0x3c3a0e20,
+    0x3c3a890f,
+    0x3c3b0e30,
+    0x3c3b8e4b,
+    0x3c3c0e5d,
+    0x3c3c8e90,
+    0x3c3d0e9a,
+    0x3c3d8eae,
+    0x3c3e0ebc,
+    0x3c3e8ee1,
+    0x3c3f0ca8,
+    0x3c3f8eca,
+    0x3c4000ac,
+    0x3c4080ea,
+    0x3c410d28,
+    0x3c418d67,
+    0x3c420e73,
+    0x3c428dfd,
+    0x40321971,
+    0x40329987,
+    0x403319b5,
+    0x403399bf,
+    0x403419d6,
+    0x403499f4,
+    0x40351a04,
+    0x40359a16,
+    0x40361a23,
+    0x40369a2f,
+    0x40371a44,
+    0x40379a56,
+    0x40381a61,
+    0x40389a73,
+    0x40390f27,
+    0x40399a83,
+    0x403a1a96,
+    0x403a9ab7,
+    0x403b1ac8,
+    0x403b9ad8,
+    0x403c0064,
+    0x403c8083,
+    0x403d1b5c,
+    0x403d9b72,
+    0x403e1b81,
+    0x403e9bb9,
+    0x403f1bd3,
+    0x403f9bfb,
+    0x40401c10,
+    0x40409c24,
+    0x40411c41,
+    0x40419c5c,
+    0x40421c75,
+    0x40429c88,
+    0x40431c9c,
+    0x40439cb4,
+    0x40441ccb,
+    0x404480ac,
+    0x40451ce0,
+    0x40459cf2,
+    0x40461d16,
+    0x40469d36,
+    0x40471d44,
+    0x40479d6b,
+    0x40481ddc,
+    0x40489e0f,
+    0x40491e26,
+    0x40499e40,
+    0x404a1e57,
+    0x404a9e75,
+    0x404b1e8d,
+    0x404b9ea4,
+    0x404c1eba,
+    0x404c9ecc,
+    0x404d1eed,
+    0x404d9f26,
+    0x404e1f3a,
+    0x404e9f47,
+    0x404f1f8e,
+    0x404f9fd4,
+    0x4050202b,
+    0x4050a03f,
+    0x40512072,
+    0x40522082,
+    0x4052a0a6,
+    0x405320be,
+    0x4053a0d1,
+    0x405420e6,
+    0x4054a109,
+    0x40552117,
+    0x4055a154,
+    0x40562161,
+    0x4056a17a,
+    0x40572192,
+    0x4057a1a5,
+    0x405821ba,
+    0x4058a1e1,
+    0x40592210,
+    0x4059a23d,
+    0x405a2251,
+    0x405aa261,
+    0x405b2279,
+    0x405ba28a,
+    0x405c229d,
+    0x405ca2dc,
+    0x405d22e9,
+    0x405da30e,
+    0x405e234c,
+    0x405e8ab3,
+    0x405f236d,
+    0x405fa37a,
+    0x40602388,
+    0x4060a3aa,
+    0x4061240b,
+    0x4061a443,
+    0x4062245a,
+    0x4062a46b,
+    0x40632490,
+    0x4063a4a5,
+    0x406424bc,
+    0x4064a4e8,
+    0x40652503,
+    0x4065a51a,
+    0x40662532,
+    0x4066a55c,
+    0x40672587,
+    0x4067a5cc,
+    0x40682614,
+    0x4068a635,
+    0x40692667,
+    0x4069a695,
+    0x406a26b6,
+    0x406aa6d6,
+    0x406b285e,
+    0x406ba881,
+    0x406c2897,
+    0x406cab3a,
+    0x406d2b69,
+    0x406dab91,
+    0x406e2bbf,
+    0x406eac0c,
+    0x406f2c47,
+    0x406fac7f,
+    0x40702c92,
+    0x4070acaf,
+    0x40710802,
+    0x4071acc1,
+    0x40722cd4,
+    0x4072ad0a,
+    0x40732d22,
+    0x407394fa,
+    0x40742d36,
+    0x4074ad50,
+    0x40752d61,
+    0x4075ad75,
+    0x40762d83,
+    0x407692be,
+    0x40772da8,
+    0x4077adca,
+    0x40782de5,
+    0x4078ae1e,
+    0x40792e35,
+    0x4079ae4b,
+    0x407a2e77,
+    0x407aae8a,
+    0x407b2e9f,
+    0x407baeb1,
+    0x407c2ee2,
+    0x407caeeb,
+    0x407d2650,
+    0x407d9fe4,
+    0x407e2dfa,
+    0x407ea1f1,
+    0x407f1d58,
+    0x407f9afe,
+    0x40801f9e,
+    0x40809d80,
+    0x40812094,
+    0x40819f78,
+    0x40822baa,
+    0x40829ae4,
+    0x408321cc,
+    0x4083a4cd,
+    0x40841d94,
+    0x4084a229,
+    0x408522ae,
+    0x4085a3d2,
+    0x4086232e,
+    0x40869ffe,
+    0x40872bf0,
+    0x4087a420,
+    0x40881b45,
+    0x4088a5df,
+    0x40891b94,
+    0x40899b21,
+    0x408a28cf,
+    0x408a9912,
+    0x408b2ec6,
+    0x408bac5c,
+    0x408c22be,
+    0x408c992e,
+    0x408d1df5,
+    0x408d9dc6,
+    0x408e1f0f,
+    0x408ea134,
+    0x408f25f3,
+    0x408fa3ee,
+    0x409025a8,
+    0x4090a300,
+    0x409128b7,
+    0x40919954,
+    0x40921be1,
+    0x4092ac2b,
+    0x40932ced,
+    0x4093a00f,
+    0x40941da8,
+    0x4094a8e8,
+    0x4095247c,
+    0x4095ae57,
+    0x40962bd7,
+    0x40969fb7,
+    0x4097205a,
+    0x40979f5e,
+    0x41f42789,
+    0x41f9281b,
+    0x41fe270e,
+    0x41fea92b,
+    0x41ff2a1c,
+    0x420327a2,
+    0x420827c4,
+    0x4208a800,
+    0x420926f2,
+    0x4209a83a,
+    0x420a2749,
+    0x420aa729,
+    0x420b2769,
+    0x420ba7e2,
+    0x420c2a38,
+    0x420ca8f8,
+    0x420d2912,
+    0x420da949,
+    0x42122963,
+    0x421729ff,
+    0x4217a9a5,
+    0x421c29c7,
+    0x421f2982,
+    0x42212a4f,
+    0x422629e2,
+    0x422b2b1e,
+    0x422baacc,
+    0x422c2b06,
+    0x422caa8b,
+    0x422d2a6a,
+    0x422daaeb,
+    0x422e2ab1,
+    0x4432072d,
+    0x4432873c,
+    0x44330748,
+    0x44338756,
+    0x44340769,
+    0x4434877a,
+    0x44350781,
+    0x4435878b,
+    0x4436079e,
+    0x443687b4,
+    0x443707c6,
+    0x443787d3,
+    0x443807e2,
+    0x443887ea,
+    0x44390802,
+    0x44398810,
+    0x443a0823,
+    0x483212e8,
+    0x483292fa,
+    0x48331310,
+    0x48339329,
+    0x4c32134e,
+    0x4c32935e,
+    0x4c331371,
+    0x4c339391,
+    0x4c3400ac,
+    0x4c3480ea,
+    0x4c35139d,
+    0x4c3593ab,
+    0x4c3613c7,
+    0x4c3693ed,
+    0x4c3713fc,
+    0x4c37940a,
+    0x4c38141f,
+    0x4c38942b,
+    0x4c39144b,
+    0x4c399475,
+    0x4c3a148e,
+    0x4c3a94a7,
+    0x4c3b05fd,
+    0x4c3b94c0,
+    0x4c3c14d2,
+    0x4c3c94e1,
+    0x4c3d14fa,
+    0x4c3d8c47,
+    0x4c3e1567,
+    0x4c3e9509,
+    0x4c3f1589,
+    0x4c3f92be,
+    0x4c40151f,
+    0x4c40933a,
+    0x4c411557,
+    0x4c4193da,
+    0x4c421543,
+    0x50323141,
+    0x5032b150,
+    0x5033315b,
+    0x5033b16b,
+    0x50343184,
+    0x5034b19e,
+    0x503531ac,
+    0x5035b1c2,
+    0x503631d4,
+    0x5036b1ea,
+    0x50373203,
+    0x5037b216,
+    0x5038322e,
+    0x5038b23f,
+    0x50393254,
+    0x5039b268,
+    0x503a3288,
+    0x503ab29e,
+    0x503b32b6,
+    0x503bb2c8,
+    0x503c32e4,
+    0x503cb2fb,
+    0x503d3314,
+    0x503db32a,
+    0x503e3337,
+    0x503eb34d,
+    0x503f335f,
+    0x503f837b,
+    0x50403372,
+    0x5040b382,
+    0x5041339c,
+    0x5041b3ab,
+    0x504233c5,
+    0x5042b3e2,
+    0x504333f2,
+    0x5043b402,
+    0x50443411,
+    0x50448431,
+    0x50453425,
+    0x5045b443,
+    0x50463456,
+    0x5046b46c,
+    0x5047347e,
+    0x5047b493,
+    0x504834b9,
+    0x5048b4c7,
+    0x504934da,
+    0x5049b4ef,
+    0x504a3505,
+    0x504ab515,
+    0x504b3535,
+    0x504bb548,
+    0x504c356b,
+    0x504cb599,
+    0x504d35ab,
+    0x504db5c8,
+    0x504e35e3,
+    0x504eb5ff,
+    0x504f3611,
+    0x504fb628,
+    0x50503637,
+    0x505086f1,
+    0x5051364a,
+    0x58320f65,
+    0x68320f27,
+    0x68328c7f,
+    0x68330c92,
+    0x68338f35,
+    0x68340f45,
+    0x683480ea,
+    0x6c320eed,
+    0x6c328c36,
+    0x6c330ef8,
+    0x6c338f11,
+    0x74320a1b,
+    0x743280ac,
+    0x74330c47,
+    0x78320980,
+    0x78328995,
+    0x783309a1,
+    0x78338083,
+    0x783409b0,
+    0x783489c5,
+    0x783509e4,
+    0x78358a06,
+    0x78360a1b,
+    0x78368a31,
+    0x78370a41,
+    0x78378a62,
+    0x78380a75,
+    0x78388a87,
+    0x78390a94,
+    0x78398ab3,
+    0x783a0ac8,
+    0x783a8ad6,
+    0x783b0ae0,
+    0x783b8af4,
+    0x783c0b0b,
+    0x783c8b20,
+    0x783d0b37,
+    0x783d8b4c,
+    0x783e0aa2,
+    0x783e8a54,
+    0x7c3211d7,
+};
+
+const size_t kOpenSSLReasonValuesLen = sizeof(kOpenSSLReasonValues) / sizeof(kOpenSSLReasonValues[0]);
+
+const char kOpenSSLReasonStringData[] =
+    "ASN1_LENGTH_MISMATCH\0"
+    "AUX_ERROR\0"
+    "BAD_GET_ASN1_OBJECT_CALL\0"
+    "BAD_OBJECT_HEADER\0"
+    "BMPSTRING_IS_WRONG_LENGTH\0"
+    "BN_LIB\0"
+    "BOOLEAN_IS_WRONG_LENGTH\0"
+    "BUFFER_TOO_SMALL\0"
+    "CONTEXT_NOT_INITIALISED\0"
+    "DECODE_ERROR\0"
+    "DEPTH_EXCEEDED\0"
+    "DIGEST_AND_KEY_TYPE_NOT_SUPPORTED\0"
+    "ENCODE_ERROR\0"
+    "ERROR_GETTING_TIME\0"
+    "EXPECTING_AN_ASN1_SEQUENCE\0"
+    "EXPECTING_AN_INTEGER\0"
+    "EXPECTING_AN_OBJECT\0"
+    "EXPECTING_A_BOOLEAN\0"
+    "EXPECTING_A_TIME\0"
+    "EXPLICIT_LENGTH_MISMATCH\0"
+    "EXPLICIT_TAG_NOT_CONSTRUCTED\0"
+    "FIELD_MISSING\0"
+    "FIRST_NUM_TOO_LARGE\0"
+    "HEADER_TOO_LONG\0"
+    "ILLEGAL_BITSTRING_FORMAT\0"
+    "ILLEGAL_BOOLEAN\0"
+    "ILLEGAL_CHARACTERS\0"
+    "ILLEGAL_FORMAT\0"
+    "ILLEGAL_HEX\0"
+    "ILLEGAL_IMPLICIT_TAG\0"
+    "ILLEGAL_INTEGER\0"
+    "ILLEGAL_NESTED_TAGGING\0"
+    "ILLEGAL_NULL\0"
+    "ILLEGAL_NULL_VALUE\0"
+    "ILLEGAL_OBJECT\0"
+    "ILLEGAL_OPTIONAL_ANY\0"
+    "ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE\0"
+    "ILLEGAL_TAGGED_ANY\0"
+    "ILLEGAL_TIME_VALUE\0"
+    "INTEGER_NOT_ASCII_FORMAT\0"
+    "INTEGER_TOO_LARGE_FOR_LONG\0"
+    "INVALID_BIT_STRING_BITS_LEFT\0"
+    "INVALID_BMPSTRING\0"
+    "INVALID_DIGIT\0"
+    "INVALID_MODIFIER\0"
+    "INVALID_NUMBER\0"
+    "INVALID_OBJECT_ENCODING\0"
+    "INVALID_SEPARATOR\0"
+    "INVALID_TIME_FORMAT\0"
+    "INVALID_UNIVERSALSTRING\0"
+    "INVALID_UTF8STRING\0"
+    "LIST_ERROR\0"
+    "MISSING_ASN1_EOS\0"
+    "MISSING_EOC\0"
+    "MISSING_SECOND_NUMBER\0"
+    "MISSING_VALUE\0"
+    "MSTRING_NOT_UNIVERSAL\0"
+    "MSTRING_WRONG_TAG\0"
+    "NESTED_ASN1_ERROR\0"
+    "NESTED_ASN1_STRING\0"
+    "NESTED_TOO_DEEP\0"
+    "NON_HEX_CHARACTERS\0"
+    "NOT_ASCII_FORMAT\0"
+    "NOT_ENOUGH_DATA\0"
+    "NO_MATCHING_CHOICE_TYPE\0"
+    "NULL_IS_WRONG_LENGTH\0"
+    "OBJECT_NOT_ASCII_FORMAT\0"
+    "ODD_NUMBER_OF_CHARS\0"
+    "SECOND_NUMBER_TOO_LARGE\0"
+    "SEQUENCE_LENGTH_MISMATCH\0"
+    "SEQUENCE_NOT_CONSTRUCTED\0"
+    "SEQUENCE_OR_SET_NEEDS_CONFIG\0"
+    "SHORT_LINE\0"
+    "STREAMING_NOT_SUPPORTED\0"
+    "STRING_TOO_LONG\0"
+    "STRING_TOO_SHORT\0"
+    "TAG_VALUE_TOO_HIGH\0"
+    "TIME_NOT_ASCII_FORMAT\0"
+    "TOO_LONG\0"
+    "TYPE_NOT_CONSTRUCTED\0"
+    "TYPE_NOT_PRIMITIVE\0"
+    "UNEXPECTED_EOC\0"
+    "UNIVERSALSTRING_IS_WRONG_LENGTH\0"
+    "UNKNOWN_FORMAT\0"
+    "UNKNOWN_MESSAGE_DIGEST_ALGORITHM\0"
+    "UNKNOWN_SIGNATURE_ALGORITHM\0"
+    "UNKNOWN_TAG\0"
+    "UNSUPPORTED_ANY_DEFINED_BY_TYPE\0"
+    "UNSUPPORTED_PUBLIC_KEY_TYPE\0"
+    "UNSUPPORTED_TYPE\0"
+    "WRONG_PUBLIC_KEY_TYPE\0"
+    "WRONG_TAG\0"
+    "WRONG_TYPE\0"
+    "BAD_FOPEN_MODE\0"
+    "BROKEN_PIPE\0"
+    "CONNECT_ERROR\0"
+    "ERROR_SETTING_NBIO\0"
+    "INVALID_ARGUMENT\0"
+    "IN_USE\0"
+    "KEEPALIVE\0"
+    "NBIO_CONNECT_ERROR\0"
+    "NO_HOSTNAME_SPECIFIED\0"
+    "NO_PORT_SPECIFIED\0"
+    "NO_SUCH_FILE\0"
+    "NULL_PARAMETER\0"
+    "SYS_LIB\0"
+    "UNABLE_TO_CREATE_SOCKET\0"
+    "UNINITIALIZED\0"
+    "UNSUPPORTED_METHOD\0"
+    "WRITE_TO_READ_ONLY_BIO\0"
+    "ARG2_LT_ARG3\0"
+    "BAD_ENCODING\0"
+    "BAD_RECIPROCAL\0"
+    "BIGNUM_TOO_LONG\0"
+    "BITS_TOO_SMALL\0"
+    "CALLED_WITH_EVEN_MODULUS\0"
+    "DIV_BY_ZERO\0"
+    "EXPAND_ON_STATIC_BIGNUM_DATA\0"
+    "INPUT_NOT_REDUCED\0"
+    "INVALID_INPUT\0"
+    "INVALID_RANGE\0"
+    "NEGATIVE_NUMBER\0"
+    "NOT_A_SQUARE\0"
+    "NOT_INITIALIZED\0"
+    "NO_INVERSE\0"
+    "PRIVATE_KEY_TOO_LARGE\0"
+    "P_IS_NOT_PRIME\0"
+    "TOO_MANY_ITERATIONS\0"
+    "TOO_MANY_TEMPORARY_VARIABLES\0"
+    "AES_KEY_SETUP_FAILED\0"
+    "BAD_DECRYPT\0"
+    "BAD_KEY_LENGTH\0"
+    "CTRL_NOT_IMPLEMENTED\0"
+    "CTRL_OPERATION_NOT_IMPLEMENTED\0"
+    "DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH\0"
+    "INITIALIZATION_ERROR\0"
+    "INPUT_NOT_INITIALIZED\0"
+    "INVALID_AD_SIZE\0"
+    "INVALID_KEY_LENGTH\0"
+    "INVALID_NONCE\0"
+    "INVALID_NONCE_SIZE\0"
+    "INVALID_OPERATION\0"
+    "IV_TOO_LARGE\0"
+    "NO_CIPHER_SET\0"
+    "NO_DIRECTION_SET\0"
+    "OUTPUT_ALIASES_INPUT\0"
+    "TAG_TOO_LARGE\0"
+    "TOO_LARGE\0"
+    "UNSUPPORTED_AD_SIZE\0"
+    "UNSUPPORTED_INPUT_SIZE\0"
+    "UNSUPPORTED_KEY_SIZE\0"
+    "UNSUPPORTED_NONCE_SIZE\0"
+    "UNSUPPORTED_TAG_SIZE\0"
+    "WRONG_FINAL_BLOCK_LENGTH\0"
+    "LIST_CANNOT_BE_NULL\0"
+    "MISSING_CLOSE_SQUARE_BRACKET\0"
+    "MISSING_EQUAL_SIGN\0"
+    "NO_CLOSE_BRACE\0"
+    "UNABLE_TO_CREATE_NEW_SECTION\0"
+    "VARIABLE_EXPANSION_TOO_LONG\0"
+    "VARIABLE_HAS_NO_VALUE\0"
+    "BAD_GENERATOR\0"
+    "INVALID_PUBKEY\0"
+    "MODULUS_TOO_LARGE\0"
+    "NO_PRIVATE_VALUE\0"
+    "UNKNOWN_HASH\0"
+    "BAD_Q_VALUE\0"
+    "BAD_VERSION\0"
+    "INVALID_PARAMETERS\0"
+    "MISSING_PARAMETERS\0"
+    "NEED_NEW_SETUP_VALUES\0"
+    "BIGNUM_OUT_OF_RANGE\0"
+    "COORDINATES_OUT_OF_RANGE\0"
+    "D2I_ECPKPARAMETERS_FAILURE\0"
+    "EC_GROUP_NEW_BY_NAME_FAILURE\0"
+    "GROUP2PKPARAMETERS_FAILURE\0"
+    "GROUP_MISMATCH\0"
+    "I2D_ECPKPARAMETERS_FAILURE\0"
+    "INCOMPATIBLE_OBJECTS\0"
+    "INVALID_COFACTOR\0"
+    "INVALID_COMPRESSED_POINT\0"
+    "INVALID_COMPRESSION_BIT\0"
+    "INVALID_ENCODING\0"
+    "INVALID_FIELD\0"
+    "INVALID_FORM\0"
+    "INVALID_GROUP_ORDER\0"
+    "INVALID_PRIVATE_KEY\0"
+    "INVALID_SCALAR\0"
+    "MISSING_PRIVATE_KEY\0"
+    "NON_NAMED_CURVE\0"
+    "PKPARAMETERS2GROUP_FAILURE\0"
+    "POINT_AT_INFINITY\0"
+    "POINT_IS_NOT_ON_CURVE\0"
+    "PUBLIC_KEY_VALIDATION_FAILED\0"
+    "SLOT_FULL\0"
+    "UNDEFINED_GENERATOR\0"
+    "UNKNOWN_GROUP\0"
+    "UNKNOWN_ORDER\0"
+    "WRONG_CURVE_PARAMETERS\0"
+    "WRONG_ORDER\0"
+    "KDF_FAILED\0"
+    "POINT_ARITHMETIC_FAILURE\0"
+    "UNKNOWN_DIGEST_LENGTH\0"
+    "BAD_SIGNATURE\0"
+    "NOT_IMPLEMENTED\0"
+    "RANDOM_NUMBER_GENERATION_FAILED\0"
+    "OPERATION_NOT_SUPPORTED\0"
+    "COMMAND_NOT_SUPPORTED\0"
+    "DIFFERENT_KEY_TYPES\0"
+    "DIFFERENT_PARAMETERS\0"
+    "EXPECTING_AN_EC_KEY_KEY\0"
+    "EXPECTING_AN_RSA_KEY\0"
+    "EXPECTING_A_DSA_KEY\0"
+    "ILLEGAL_OR_UNSUPPORTED_PADDING_MODE\0"
+    "INVALID_DIGEST_LENGTH\0"
+    "INVALID_DIGEST_TYPE\0"
+    "INVALID_KEYBITS\0"
+    "INVALID_MGF1_MD\0"
+    "INVALID_PADDING_MODE\0"
+    "INVALID_PEER_KEY\0"
+    "INVALID_PSS_SALTLEN\0"
+    "INVALID_SIGNATURE\0"
+    "KEYS_NOT_SET\0"
+    "MEMORY_LIMIT_EXCEEDED\0"
+    "NOT_A_PRIVATE_KEY\0"
+    "NOT_XOF_OR_INVALID_LENGTH\0"
+    "NO_DEFAULT_DIGEST\0"
+    "NO_KEY_SET\0"
+    "NO_MDC2_SUPPORT\0"
+    "NO_NID_FOR_CURVE\0"
+    "NO_OPERATION_SET\0"
+    "NO_PARAMETERS_SET\0"
+    "OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE\0"
+    "OPERATON_NOT_INITIALIZED\0"
+    "UNKNOWN_PUBLIC_KEY_TYPE\0"
+    "UNSUPPORTED_ALGORITHM\0"
+    "OUTPUT_TOO_LARGE\0"
+    "INVALID_OID_STRING\0"
+    "UNKNOWN_NID\0"
+    "BAD_BASE64_DECODE\0"
+    "BAD_END_LINE\0"
+    "BAD_IV_CHARS\0"
+    "BAD_PASSWORD_READ\0"
+    "CIPHER_IS_NULL\0"
+    "ERROR_CONVERTING_PRIVATE_KEY\0"
+    "NOT_DEK_INFO\0"
+    "NOT_ENCRYPTED\0"
+    "NOT_PROC_TYPE\0"
+    "NO_START_LINE\0"
+    "READ_KEY\0"
+    "SHORT_HEADER\0"
+    "UNSUPPORTED_CIPHER\0"
+    "UNSUPPORTED_ENCRYPTION\0"
+    "BAD_PKCS7_VERSION\0"
+    "NOT_PKCS7_SIGNED_DATA\0"
+    "NO_CERTIFICATES_INCLUDED\0"
+    "NO_CRLS_INCLUDED\0"
+    "BAD_ITERATION_COUNT\0"
+    "BAD_PKCS12_DATA\0"
+    "BAD_PKCS12_VERSION\0"
+    "CIPHER_HAS_NO_OBJECT_IDENTIFIER\0"
+    "CRYPT_ERROR\0"
+    "ENCRYPT_ERROR\0"
+    "ERROR_SETTING_CIPHER_PARAMS\0"
+    "INCORRECT_PASSWORD\0"
+    "INVALID_CHARACTERS\0"
+    "KEYGEN_FAILURE\0"
+    "KEY_GEN_ERROR\0"
+    "METHOD_NOT_SUPPORTED\0"
+    "MISSING_MAC\0"
+    "MULTIPLE_PRIVATE_KEYS_IN_PKCS12\0"
+    "PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED\0"
+    "PKCS12_TOO_DEEPLY_NESTED\0"
+    "PRIVATE_KEY_DECODE_ERROR\0"
+    "PRIVATE_KEY_ENCODE_ERROR\0"
+    "UNKNOWN_ALGORITHM\0"
+    "UNKNOWN_CIPHER\0"
+    "UNKNOWN_CIPHER_ALGORITHM\0"
+    "UNKNOWN_DIGEST\0"
+    "UNSUPPORTED_KEYLENGTH\0"
+    "UNSUPPORTED_KEY_DERIVATION_FUNCTION\0"
+    "UNSUPPORTED_OPTIONS\0"
+    "UNSUPPORTED_PRF\0"
+    "UNSUPPORTED_PRIVATE_KEY_ALGORITHM\0"
+    "UNSUPPORTED_SALT_TYPE\0"
+    "BAD_E_VALUE\0"
+    "BAD_FIXED_HEADER_DECRYPT\0"
+    "BAD_PAD_BYTE_COUNT\0"
+    "BAD_RSA_PARAMETERS\0"
+    "BLOCK_TYPE_IS_NOT_01\0"
+    "BLOCK_TYPE_IS_NOT_02\0"
+    "BN_NOT_INITIALIZED\0"
+    "CANNOT_RECOVER_MULTI_PRIME_KEY\0"
+    "CRT_PARAMS_ALREADY_GIVEN\0"
+    "CRT_VALUES_INCORRECT\0"
+    "DATA_LEN_NOT_EQUAL_TO_MOD_LEN\0"
+    "DATA_TOO_LARGE\0"
+    "DATA_TOO_LARGE_FOR_KEY_SIZE\0"
+    "DATA_TOO_LARGE_FOR_MODULUS\0"
+    "DATA_TOO_SMALL\0"
+    "DATA_TOO_SMALL_FOR_KEY_SIZE\0"
+    "DIGEST_TOO_BIG_FOR_RSA_KEY\0"
+    "D_E_NOT_CONGRUENT_TO_1\0"
+    "D_OUT_OF_RANGE\0"
+    "EMPTY_PUBLIC_KEY\0"
+    "FIRST_OCTET_INVALID\0"
+    "INCONSISTENT_SET_OF_CRT_VALUES\0"
+    "INTERNAL_ERROR\0"
+    "INVALID_MESSAGE_LENGTH\0"
+    "KEY_SIZE_TOO_SMALL\0"
+    "LAST_OCTET_INVALID\0"
+    "MUST_HAVE_AT_LEAST_TWO_PRIMES\0"
+    "NO_PUBLIC_EXPONENT\0"
+    "NULL_BEFORE_BLOCK_MISSING\0"
+    "N_NOT_EQUAL_P_Q\0"
+    "OAEP_DECODING_ERROR\0"
+    "ONLY_ONE_OF_P_Q_GIVEN\0"
+    "OUTPUT_BUFFER_TOO_SMALL\0"
+    "PADDING_CHECK_FAILED\0"
+    "PKCS_DECODING_ERROR\0"
+    "SLEN_CHECK_FAILED\0"
+    "SLEN_RECOVERY_FAILED\0"
+    "UNKNOWN_ALGORITHM_TYPE\0"
+    "UNKNOWN_PADDING_TYPE\0"
+    "VALUE_MISSING\0"
+    "WRONG_SIGNATURE_LENGTH\0"
+    "ALPN_MISMATCH_ON_EARLY_DATA\0"
+    "APPLICATION_DATA_INSTEAD_OF_HANDSHAKE\0"
+    "APPLICATION_DATA_ON_SHUTDOWN\0"
+    "APP_DATA_IN_HANDSHAKE\0"
+    "ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT\0"
+    "BAD_ALERT\0"
+    "BAD_CHANGE_CIPHER_SPEC\0"
+    "BAD_DATA_RETURNED_BY_CALLBACK\0"
+    "BAD_DH_P_LENGTH\0"
+    "BAD_DIGEST_LENGTH\0"
+    "BAD_ECC_CERT\0"
+    "BAD_ECPOINT\0"
+    "BAD_HANDSHAKE_RECORD\0"
+    "BAD_HELLO_REQUEST\0"
+    "BAD_LENGTH\0"
+    "BAD_PACKET_LENGTH\0"
+    "BAD_RSA_ENCRYPT\0"
+    "BAD_SRTP_MKI_VALUE\0"
+    "BAD_SRTP_PROTECTION_PROFILE_LIST\0"
+    "BAD_SSL_FILETYPE\0"
+    "BAD_WRITE_RETRY\0"
+    "BIO_NOT_SET\0"
+    "BLOCK_CIPHER_PAD_IS_WRONG\0"
+    "BUFFERED_MESSAGES_ON_CIPHER_CHANGE\0"
+    "CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD\0"
+    "CANNOT_PARSE_LEAF_CERT\0"
+    "CA_DN_LENGTH_MISMATCH\0"
+    "CA_DN_TOO_LONG\0"
+    "CCS_RECEIVED_EARLY\0"
+    "CERTIFICATE_AND_PRIVATE_KEY_MISMATCH\0"
+    "CERTIFICATE_VERIFY_FAILED\0"
+    "CERT_CB_ERROR\0"
+    "CERT_DECOMPRESSION_FAILED\0"
+    "CERT_LENGTH_MISMATCH\0"
+    "CHANNEL_ID_NOT_P256\0"
+    "CHANNEL_ID_SIGNATURE_INVALID\0"
+    "CIPHER_OR_HASH_UNAVAILABLE\0"
+    "CLIENTHELLO_PARSE_FAILED\0"
+    "CLIENTHELLO_TLSEXT\0"
+    "CONNECTION_REJECTED\0"
+    "CONNECTION_TYPE_NOT_SET\0"
+    "CUSTOM_EXTENSION_ERROR\0"
+    "DATA_LENGTH_TOO_LONG\0"
+    "DECRYPTION_FAILED\0"
+    "DECRYPTION_FAILED_OR_BAD_RECORD_MAC\0"
+    "DH_PUBLIC_VALUE_LENGTH_IS_WRONG\0"
+    "DH_P_TOO_LONG\0"
+    "DIGEST_CHECK_FAILED\0"
+    "DOWNGRADE_DETECTED\0"
+    "DTLS_MESSAGE_TOO_BIG\0"
+    "DUPLICATE_EXTENSION\0"
+    "DUPLICATE_KEY_SHARE\0"
+    "DUPLICATE_SIGNATURE_ALGORITHM\0"
+    "EARLY_DATA_NOT_IN_USE\0"
+    "ECC_CERT_NOT_FOR_SIGNING\0"
+    "EMPTY_HELLO_RETRY_REQUEST\0"
+    "EMS_STATE_INCONSISTENT\0"
+    "ENCRYPTED_LENGTH_TOO_LONG\0"
+    "ERROR_ADDING_EXTENSION\0"
+    "ERROR_IN_RECEIVED_CIPHER_LIST\0"
+    "ERROR_PARSING_EXTENSION\0"
+    "EXCESSIVE_MESSAGE_SIZE\0"
+    "EXTRA_DATA_IN_MESSAGE\0"
+    "FRAGMENT_MISMATCH\0"
+    "GOT_NEXT_PROTO_WITHOUT_EXTENSION\0"
+    "HANDSHAKE_FAILURE_ON_CLIENT_HELLO\0"
+    "HANDSHAKE_NOT_COMPLETE\0"
+    "HTTPS_PROXY_REQUEST\0"
+    "HTTP_REQUEST\0"
+    "INAPPROPRIATE_FALLBACK\0"
+    "INCONSISTENT_CLIENT_HELLO\0"
+    "INVALID_ALPN_PROTOCOL\0"
+    "INVALID_COMMAND\0"
+    "INVALID_COMPRESSION_LIST\0"
+    "INVALID_DELEGATED_CREDENTIAL\0"
+    "INVALID_MESSAGE\0"
+    "INVALID_OUTER_RECORD_TYPE\0"
+    "INVALID_SCT_LIST\0"
+    "INVALID_SIGNATURE_ALGORITHM\0"
+    "INVALID_SSL_SESSION\0"
+    "INVALID_TICKET_KEYS_LENGTH\0"
+    "KEY_USAGE_BIT_INCORRECT\0"
+    "LENGTH_MISMATCH\0"
+    "MISSING_EXTENSION\0"
+    "MISSING_KEY_SHARE\0"
+    "MISSING_RSA_CERTIFICATE\0"
+    "MISSING_TMP_DH_KEY\0"
+    "MISSING_TMP_ECDH_KEY\0"
+    "MIXED_SPECIAL_OPERATOR_WITH_GROUPS\0"
+    "MTU_TOO_SMALL\0"
+    "NEGOTIATED_BOTH_NPN_AND_ALPN\0"
+    "NEGOTIATED_TB_WITHOUT_EMS_OR_RI\0"
+    "NESTED_GROUP\0"
+    "NO_CERTIFICATES_RETURNED\0"
+    "NO_CERTIFICATE_ASSIGNED\0"
+    "NO_CERTIFICATE_SET\0"
+    "NO_CIPHERS_AVAILABLE\0"
+    "NO_CIPHERS_PASSED\0"
+    "NO_CIPHERS_SPECIFIED\0"
+    "NO_CIPHER_MATCH\0"
+    "NO_COMMON_SIGNATURE_ALGORITHMS\0"
+    "NO_COMPRESSION_SPECIFIED\0"
+    "NO_GROUPS_SPECIFIED\0"
+    "NO_METHOD_SPECIFIED\0"
+    "NO_P256_SUPPORT\0"
+    "NO_PRIVATE_KEY_ASSIGNED\0"
+    "NO_RENEGOTIATION\0"
+    "NO_REQUIRED_DIGEST\0"
+    "NO_SHARED_CIPHER\0"
+    "NO_SHARED_GROUP\0"
+    "NO_SUPPORTED_VERSIONS_ENABLED\0"
+    "NULL_SSL_CTX\0"
+    "NULL_SSL_METHOD_PASSED\0"
+    "OCSP_CB_ERROR\0"
+    "OLD_SESSION_CIPHER_NOT_RETURNED\0"
+    "OLD_SESSION_PRF_HASH_MISMATCH\0"
+    "OLD_SESSION_VERSION_NOT_RETURNED\0"
+    "PARSE_TLSEXT\0"
+    "PATH_TOO_LONG\0"
+    "PEER_DID_NOT_RETURN_A_CERTIFICATE\0"
+    "PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE\0"
+    "PRE_SHARED_KEY_MUST_BE_LAST\0"
+    "PRIVATE_KEY_OPERATION_FAILED\0"
+    "PROTOCOL_IS_SHUTDOWN\0"
+    "PSK_IDENTITY_BINDER_COUNT_MISMATCH\0"
+    "PSK_IDENTITY_NOT_FOUND\0"
+    "PSK_NO_CLIENT_CB\0"
+    "PSK_NO_SERVER_CB\0"
+    "QUIC_INTERNAL_ERROR\0"
+    "READ_TIMEOUT_EXPIRED\0"
+    "RECORD_LENGTH_MISMATCH\0"
+    "RECORD_TOO_LARGE\0"
+    "RENEGOTIATION_EMS_MISMATCH\0"
+    "RENEGOTIATION_ENCODING_ERR\0"
+    "RENEGOTIATION_MISMATCH\0"
+    "REQUIRED_CIPHER_MISSING\0"
+    "RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION\0"
+    "RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION\0"
+    "SCSV_RECEIVED_WHEN_RENEGOTIATING\0"
+    "SECOND_SERVERHELLO_VERSION_MISMATCH\0"
+    "SERVERHELLO_TLSEXT\0"
+    "SERVER_CERT_CHANGED\0"
+    "SERVER_ECHOED_INVALID_SESSION_ID\0"
+    "SESSION_ID_CONTEXT_UNINITIALIZED\0"
+    "SESSION_MAY_NOT_BE_CREATED\0"
+    "SHUTDOWN_WHILE_IN_INIT\0"
+    "SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER\0"
+    "SRTP_COULD_NOT_ALLOCATE_PROFILES\0"
+    "SRTP_UNKNOWN_PROTECTION_PROFILE\0"
+    "SSL3_EXT_INVALID_SERVERNAME\0"
+    "SSLV3_ALERT_BAD_CERTIFICATE\0"
+    "SSLV3_ALERT_BAD_RECORD_MAC\0"
+    "SSLV3_ALERT_CERTIFICATE_EXPIRED\0"
+    "SSLV3_ALERT_CERTIFICATE_REVOKED\0"
+    "SSLV3_ALERT_CERTIFICATE_UNKNOWN\0"
+    "SSLV3_ALERT_CLOSE_NOTIFY\0"
+    "SSLV3_ALERT_DECOMPRESSION_FAILURE\0"
+    "SSLV3_ALERT_HANDSHAKE_FAILURE\0"
+    "SSLV3_ALERT_ILLEGAL_PARAMETER\0"
+    "SSLV3_ALERT_NO_CERTIFICATE\0"
+    "SSLV3_ALERT_UNEXPECTED_MESSAGE\0"
+    "SSLV3_ALERT_UNSUPPORTED_CERTIFICATE\0"
+    "SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION\0"
+    "SSL_HANDSHAKE_FAILURE\0"
+    "SSL_SESSION_ID_CONTEXT_TOO_LONG\0"
+    "SSL_SESSION_ID_TOO_LONG\0"
+    "TICKET_ENCRYPTION_FAILED\0"
+    "TLS13_DOWNGRADE\0"
+    "TLSV1_ALERT_ACCESS_DENIED\0"
+    "TLSV1_ALERT_DECODE_ERROR\0"
+    "TLSV1_ALERT_DECRYPTION_FAILED\0"
+    "TLSV1_ALERT_DECRYPT_ERROR\0"
+    "TLSV1_ALERT_EXPORT_RESTRICTION\0"
+    "TLSV1_ALERT_INAPPROPRIATE_FALLBACK\0"
+    "TLSV1_ALERT_INSUFFICIENT_SECURITY\0"
+    "TLSV1_ALERT_INTERNAL_ERROR\0"
+    "TLSV1_ALERT_NO_RENEGOTIATION\0"
+    "TLSV1_ALERT_PROTOCOL_VERSION\0"
+    "TLSV1_ALERT_RECORD_OVERFLOW\0"
+    "TLSV1_ALERT_UNKNOWN_CA\0"
+    "TLSV1_ALERT_USER_CANCELLED\0"
+    "TLSV1_BAD_CERTIFICATE_HASH_VALUE\0"
+    "TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE\0"
+    "TLSV1_CERTIFICATE_REQUIRED\0"
+    "TLSV1_CERTIFICATE_UNOBTAINABLE\0"
+    "TLSV1_UNKNOWN_PSK_IDENTITY\0"
+    "TLSV1_UNRECOGNIZED_NAME\0"
+    "TLSV1_UNSUPPORTED_EXTENSION\0"
+    "TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST\0"
+    "TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG\0"
+    "TOO_MANY_EMPTY_FRAGMENTS\0"
+    "TOO_MANY_KEY_UPDATES\0"
+    "TOO_MANY_WARNING_ALERTS\0"
+    "TOO_MUCH_READ_EARLY_DATA\0"
+    "TOO_MUCH_SKIPPED_EARLY_DATA\0"
+    "UNABLE_TO_FIND_ECDH_PARAMETERS\0"
+    "UNCOMPRESSED_CERT_TOO_LARGE\0"
+    "UNEXPECTED_EXTENSION\0"
+    "UNEXPECTED_EXTENSION_ON_EARLY_DATA\0"
+    "UNEXPECTED_MESSAGE\0"
+    "UNEXPECTED_OPERATOR_IN_GROUP\0"
+    "UNEXPECTED_RECORD\0"
+    "UNKNOWN_ALERT_TYPE\0"
+    "UNKNOWN_CERTIFICATE_TYPE\0"
+    "UNKNOWN_CERT_COMPRESSION_ALG\0"
+    "UNKNOWN_CIPHER_RETURNED\0"
+    "UNKNOWN_CIPHER_TYPE\0"
+    "UNKNOWN_KEY_EXCHANGE_TYPE\0"
+    "UNKNOWN_PROTOCOL\0"
+    "UNKNOWN_SSL_VERSION\0"
+    "UNKNOWN_STATE\0"
+    "UNSAFE_LEGACY_RENEGOTIATION_DISABLED\0"
+    "UNSUPPORTED_COMPRESSION_ALGORITHM\0"
+    "UNSUPPORTED_ELLIPTIC_CURVE\0"
+    "UNSUPPORTED_PROTOCOL\0"
+    "UNSUPPORTED_PROTOCOL_FOR_CUSTOM_KEY\0"
+    "WRONG_CERTIFICATE_TYPE\0"
+    "WRONG_CIPHER_RETURNED\0"
+    "WRONG_CURVE\0"
+    "WRONG_ENCRYPTION_LEVEL_RECEIVED\0"
+    "WRONG_MESSAGE_TYPE\0"
+    "WRONG_SIGNATURE_TYPE\0"
+    "WRONG_SSL_VERSION\0"
+    "WRONG_VERSION_NUMBER\0"
+    "WRONG_VERSION_ON_EARLY_DATA\0"
+    "X509_LIB\0"
+    "X509_VERIFICATION_SETUP_PROBLEMS\0"
+    "AKID_MISMATCH\0"
+    "BAD_X509_FILETYPE\0"
+    "BASE64_DECODE_ERROR\0"
+    "CANT_CHECK_DH_KEY\0"
+    "CERT_ALREADY_IN_HASH_TABLE\0"
+    "CRL_ALREADY_DELTA\0"
+    "CRL_VERIFY_FAILURE\0"
+    "IDP_MISMATCH\0"
+    "INVALID_DIRECTORY\0"
+    "INVALID_FIELD_NAME\0"
+    "INVALID_PARAMETER\0"
+    "INVALID_PSS_PARAMETERS\0"
+    "INVALID_TRUST\0"
+    "ISSUER_MISMATCH\0"
+    "KEY_TYPE_MISMATCH\0"
+    "KEY_VALUES_MISMATCH\0"
+    "LOADING_CERT_DIR\0"
+    "LOADING_DEFAULTS\0"
+    "NAME_TOO_LONG\0"
+    "NEWER_CRL_NOT_NEWER\0"
+    "NO_CERT_SET_FOR_US_TO_VERIFY\0"
+    "NO_CRL_NUMBER\0"
+    "PUBLIC_KEY_DECODE_ERROR\0"
+    "PUBLIC_KEY_ENCODE_ERROR\0"
+    "SHOULD_RETRY\0"
+    "SIGNATURE_ALGORITHM_MISMATCH\0"
+    "UNKNOWN_KEY_TYPE\0"
+    "UNKNOWN_PURPOSE_ID\0"
+    "UNKNOWN_TRUST_ID\0"
+    "WRONG_LOOKUP_TYPE\0"
+    "BAD_IP_ADDRESS\0"
+    "BAD_OBJECT\0"
+    "BN_DEC2BN_ERROR\0"
+    "BN_TO_ASN1_INTEGER_ERROR\0"
+    "CANNOT_FIND_FREE_FUNCTION\0"
+    "DIRNAME_ERROR\0"
+    "DISTPOINT_ALREADY_SET\0"
+    "DUPLICATE_ZONE_ID\0"
+    "ERROR_CONVERTING_ZONE\0"
+    "ERROR_CREATING_EXTENSION\0"
+    "ERROR_IN_EXTENSION\0"
+    "EXPECTED_A_SECTION_NAME\0"
+    "EXTENSION_EXISTS\0"
+    "EXTENSION_NAME_ERROR\0"
+    "EXTENSION_NOT_FOUND\0"
+    "EXTENSION_SETTING_NOT_SUPPORTED\0"
+    "EXTENSION_VALUE_ERROR\0"
+    "ILLEGAL_EMPTY_EXTENSION\0"
+    "ILLEGAL_HEX_DIGIT\0"
+    "INCORRECT_POLICY_SYNTAX_TAG\0"
+    "INVALID_BOOLEAN_STRING\0"
+    "INVALID_EXTENSION_STRING\0"
+    "INVALID_MULTIPLE_RDNS\0"
+    "INVALID_NAME\0"
+    "INVALID_NULL_ARGUMENT\0"
+    "INVALID_NULL_NAME\0"
+    "INVALID_NULL_VALUE\0"
+    "INVALID_NUMBERS\0"
+    "INVALID_OBJECT_IDENTIFIER\0"
+    "INVALID_OPTION\0"
+    "INVALID_POLICY_IDENTIFIER\0"
+    "INVALID_PROXY_POLICY_SETTING\0"
+    "INVALID_PURPOSE\0"
+    "INVALID_SECTION\0"
+    "INVALID_SYNTAX\0"
+    "ISSUER_DECODE_ERROR\0"
+    "NEED_ORGANIZATION_AND_NUMBERS\0"
+    "NO_CONFIG_DATABASE\0"
+    "NO_ISSUER_CERTIFICATE\0"
+    "NO_ISSUER_DETAILS\0"
+    "NO_POLICY_IDENTIFIER\0"
+    "NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED\0"
+    "NO_PUBLIC_KEY\0"
+    "NO_SUBJECT_DETAILS\0"
+    "ODD_NUMBER_OF_DIGITS\0"
+    "OPERATION_NOT_DEFINED\0"
+    "OTHERNAME_ERROR\0"
+    "POLICY_LANGUAGE_ALREADY_DEFINED\0"
+    "POLICY_PATH_LENGTH\0"
+    "POLICY_PATH_LENGTH_ALREADY_DEFINED\0"
+    "POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY\0"
+    "SECTION_NOT_FOUND\0"
+    "UNABLE_TO_GET_ISSUER_DETAILS\0"
+    "UNABLE_TO_GET_ISSUER_KEYID\0"
+    "UNKNOWN_BIT_STRING_ARGUMENT\0"
+    "UNKNOWN_EXTENSION\0"
+    "UNKNOWN_EXTENSION_NAME\0"
+    "UNKNOWN_OPTION\0"
+    "UNSUPPORTED_OPTION\0"
+    "USER_TOO_LONG\0"
+    "";
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c
new file mode 100644
index 0000000..b650f49
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c	
@@ -0,0 +1,271 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+int ASN1_BIT_STRING_set(ASN1_BIT_STRING *x, unsigned char *d, int len)
+{
+    return M_ASN1_BIT_STRING_set(x, d, len);
+}
+
+int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp)
+{
+    int ret, j, bits, len;
+    unsigned char *p, *d;
+
+    if (a == NULL)
+        return (0);
+
+    len = a->length;
+
+    if (len > 0) {
+        if (a->flags & ASN1_STRING_FLAG_BITS_LEFT) {
+            bits = (int)a->flags & 0x07;
+        } else {
+            for (; len > 0; len--) {
+                if (a->data[len - 1])
+                    break;
+            }
+            j = a->data[len - 1];
+            if (j & 0x01)
+                bits = 0;
+            else if (j & 0x02)
+                bits = 1;
+            else if (j & 0x04)
+                bits = 2;
+            else if (j & 0x08)
+                bits = 3;
+            else if (j & 0x10)
+                bits = 4;
+            else if (j & 0x20)
+                bits = 5;
+            else if (j & 0x40)
+                bits = 6;
+            else if (j & 0x80)
+                bits = 7;
+            else
+                bits = 0;       /* should not happen */
+        }
+    } else
+        bits = 0;
+
+    ret = 1 + len;
+    if (pp == NULL)
+        return (ret);
+
+    p = *pp;
+
+    *(p++) = (unsigned char)bits;
+    d = a->data;
+    OPENSSL_memcpy(p, d, len);
+    p += len;
+    if (len > 0)
+        p[-1] &= (0xff << bits);
+    *pp = p;
+    return (ret);
+}
+
+ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
+                                     const unsigned char **pp, long len)
+{
+    ASN1_BIT_STRING *ret = NULL;
+    const unsigned char *p;
+    unsigned char *s;
+    int padding;
+
+    if (len < 1) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_SHORT);
+        goto err;
+    }
+
+    if (len > INT_MAX) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_LONG);
+      goto err;
+    }
+
+    if ((a == NULL) || ((*a) == NULL)) {
+        if ((ret = M_ASN1_BIT_STRING_new()) == NULL)
+            return (NULL);
+    } else
+        ret = (*a);
+
+    p = *pp;
+    padding = *(p++);
+    if (padding > 7) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
+        goto err;
+    }
+
+    /*
+     * We do this to preserve the settings.  If we modify the settings, via
+     * the _set_bit function, we will recalculate on output
+     */
+    ret->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear */
+    ret->flags |= (ASN1_STRING_FLAG_BITS_LEFT | padding); /* set */
+
+    if (len-- > 1) {            /* using one because of the bits left byte */
+        s = (unsigned char *)OPENSSL_malloc((int)len);
+        if (s == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_memcpy(s, p, (int)len);
+        s[len - 1] &= (0xff << padding);
+        p += len;
+    } else
+        s = NULL;
+
+    ret->length = (int)len;
+    if (ret->data != NULL)
+        OPENSSL_free(ret->data);
+    ret->data = s;
+    ret->type = V_ASN1_BIT_STRING;
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        M_ASN1_BIT_STRING_free(ret);
+    return (NULL);
+}
+
+/*
+ * These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
+ */
+int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
+{
+    int w, v, iv;
+    unsigned char *c;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    iv = ~v;
+    if (!value)
+        v = 0;
+
+    if (a == NULL)
+        return 0;
+
+    a->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear, set on write */
+
+    if ((a->length < (w + 1)) || (a->data == NULL)) {
+        if (!value)
+            return (1);         /* Don't need to set */
+        if (a->data == NULL)
+            c = (unsigned char *)OPENSSL_malloc(w + 1);
+        else
+            c = (unsigned char *)OPENSSL_realloc(a->data, w + 1);
+        if (c == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        if (w + 1 - a->length > 0)
+            OPENSSL_memset(c + a->length, 0, w + 1 - a->length);
+        a->data = c;
+        a->length = w + 1;
+    }
+    a->data[w] = ((a->data[w]) & iv) | v;
+    while ((a->length > 0) && (a->data[a->length - 1] == 0))
+        a->length--;
+    return (1);
+}
+
+int ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n)
+{
+    int w, v;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    if ((a == NULL) || (a->length < (w + 1)) || (a->data == NULL))
+        return (0);
+    return ((a->data[w] & v) != 0);
+}
+
+/*
+ * Checks if the given bit string contains only bits specified by
+ * the flags vector. Returns 0 if there is at least one bit set in 'a'
+ * which is not specified in 'flags', 1 otherwise.
+ * 'len' is the length of 'flags'.
+ */
+int ASN1_BIT_STRING_check(ASN1_BIT_STRING *a,
+                          unsigned char *flags, int flags_len)
+{
+    int i, ok;
+    /* Check if there is one bit set at all. */
+    if (!a || !a->data)
+        return 1;
+
+    /*
+     * Check each byte of the internal representation of the bit string.
+     */
+    ok = 1;
+    for (i = 0; i < a->length && ok; ++i) {
+        unsigned char mask = i < flags_len ? ~flags[i] : 0xff;
+        /* We are done if there is an unneeded bit set. */
+        ok = (a->data[i] & mask) == 0;
+    }
+    return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c.grpc_back
new file mode 100644
index 0000000..3942638
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bitstr.c.grpc_back	
@@ -0,0 +1,271 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+int ASN1_BIT_STRING_set(ASN1_BIT_STRING *x, unsigned char *d, int len)
+{
+    return M_ASN1_BIT_STRING_set(x, d, len);
+}
+
+int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp)
+{
+    int ret, j, bits, len;
+    unsigned char *p, *d;
+
+    if (a == NULL)
+        return (0);
+
+    len = a->length;
+
+    if (len > 0) {
+        if (a->flags & ASN1_STRING_FLAG_BITS_LEFT) {
+            bits = (int)a->flags & 0x07;
+        } else {
+            for (; len > 0; len--) {
+                if (a->data[len - 1])
+                    break;
+            }
+            j = a->data[len - 1];
+            if (j & 0x01)
+                bits = 0;
+            else if (j & 0x02)
+                bits = 1;
+            else if (j & 0x04)
+                bits = 2;
+            else if (j & 0x08)
+                bits = 3;
+            else if (j & 0x10)
+                bits = 4;
+            else if (j & 0x20)
+                bits = 5;
+            else if (j & 0x40)
+                bits = 6;
+            else if (j & 0x80)
+                bits = 7;
+            else
+                bits = 0;       /* should not happen */
+        }
+    } else
+        bits = 0;
+
+    ret = 1 + len;
+    if (pp == NULL)
+        return (ret);
+
+    p = *pp;
+
+    *(p++) = (unsigned char)bits;
+    d = a->data;
+    OPENSSL_memcpy(p, d, len);
+    p += len;
+    if (len > 0)
+        p[-1] &= (0xff << bits);
+    *pp = p;
+    return (ret);
+}
+
+ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
+                                     const unsigned char **pp, long len)
+{
+    ASN1_BIT_STRING *ret = NULL;
+    const unsigned char *p;
+    unsigned char *s;
+    int padding;
+
+    if (len < 1) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_SHORT);
+        goto err;
+    }
+
+    if (len > INT_MAX) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_LONG);
+      goto err;
+    }
+
+    if ((a == NULL) || ((*a) == NULL)) {
+        if ((ret = M_ASN1_BIT_STRING_new()) == NULL)
+            return (NULL);
+    } else
+        ret = (*a);
+
+    p = *pp;
+    padding = *(p++);
+    if (padding > 7) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
+        goto err;
+    }
+
+    /*
+     * We do this to preserve the settings.  If we modify the settings, via
+     * the _set_bit function, we will recalculate on output
+     */
+    ret->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear */
+    ret->flags |= (ASN1_STRING_FLAG_BITS_LEFT | padding); /* set */
+
+    if (len-- > 1) {            /* using one because of the bits left byte */
+        s = (unsigned char *)OPENSSL_malloc((int)len);
+        if (s == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_memcpy(s, p, (int)len);
+        s[len - 1] &= (0xff << padding);
+        p += len;
+    } else
+        s = NULL;
+
+    ret->length = (int)len;
+    if (ret->data != NULL)
+        OPENSSL_free(ret->data);
+    ret->data = s;
+    ret->type = V_ASN1_BIT_STRING;
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        M_ASN1_BIT_STRING_free(ret);
+    return (NULL);
+}
+
+/*
+ * These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
+ */
+int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
+{
+    int w, v, iv;
+    unsigned char *c;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    iv = ~v;
+    if (!value)
+        v = 0;
+
+    if (a == NULL)
+        return 0;
+
+    a->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); /* clear, set on write */
+
+    if ((a->length < (w + 1)) || (a->data == NULL)) {
+        if (!value)
+            return (1);         /* Don't need to set */
+        if (a->data == NULL)
+            c = (unsigned char *)OPENSSL_malloc(w + 1);
+        else
+            c = (unsigned char *)OPENSSL_realloc(a->data, w + 1);
+        if (c == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        if (w + 1 - a->length > 0)
+            OPENSSL_memset(c + a->length, 0, w + 1 - a->length);
+        a->data = c;
+        a->length = w + 1;
+    }
+    a->data[w] = ((a->data[w]) & iv) | v;
+    while ((a->length > 0) && (a->data[a->length - 1] == 0))
+        a->length--;
+    return (1);
+}
+
+int ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n)
+{
+    int w, v;
+
+    w = n / 8;
+    v = 1 << (7 - (n & 0x07));
+    if ((a == NULL) || (a->length < (w + 1)) || (a->data == NULL))
+        return (0);
+    return ((a->data[w] & v) != 0);
+}
+
+/*
+ * Checks if the given bit string contains only bits specified by
+ * the flags vector. Returns 0 if there is at least one bit set in 'a'
+ * which is not specified in 'flags', 1 otherwise.
+ * 'len' is the length of 'flags'.
+ */
+int ASN1_BIT_STRING_check(ASN1_BIT_STRING *a,
+                          unsigned char *flags, int flags_len)
+{
+    int i, ok;
+    /* Check if there is one bit set at all. */
+    if (!a || !a->data)
+        return 1;
+
+    /*
+     * Check each byte of the internal representation of the bit string.
+     */
+    ok = 1;
+    for (i = 0; i < a->length && ok; ++i) {
+        unsigned char mask = i < flags_len ? ~flags[i] : 0xff;
+        /* We are done if there is an unneeded bit set. */
+        ok = (a->data[i] & mask) == 0;
+    }
+    return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c
new file mode 100644
index 0000000..0786c1a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c	
@@ -0,0 +1,123 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+int i2d_ASN1_BOOLEAN(int a, unsigned char **pp)
+{
+    int r;
+    unsigned char *p, *allocated = NULL;
+
+    r = ASN1_object_size(0, 1, V_ASN1_BOOLEAN);
+    if (pp == NULL)
+        return (r);
+
+    if (*pp == NULL) {
+        if ((p = allocated = OPENSSL_malloc(r)) == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+    } else {
+        p = *pp;
+    }
+
+    ASN1_put_object(&p, 0, 1, V_ASN1_BOOLEAN, V_ASN1_UNIVERSAL);
+    *p = (unsigned char)a;
+
+    /*
+     * If a new buffer was allocated, just return it back.
+     * If not, return the incremented buffer pointer.
+     */
+    *pp = allocated != NULL ? allocated : p + 1;
+    return r;
+}
+
+int d2i_ASN1_BOOLEAN(int *a, const unsigned char **pp, long length)
+{
+    int ret = -1;
+    const unsigned char *p;
+    long len;
+    int inf, tag, xclass;
+    int i = 0;
+
+    p = *pp;
+    inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
+    if (inf & 0x80) {
+        i = ASN1_R_BAD_OBJECT_HEADER;
+        goto err;
+    }
+
+    if (tag != V_ASN1_BOOLEAN) {
+        i = ASN1_R_EXPECTING_A_BOOLEAN;
+        goto err;
+    }
+
+    if (len != 1) {
+        i = ASN1_R_BOOLEAN_IS_WRONG_LENGTH;
+        goto err;
+    }
+    ret = (int)*(p++);
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c.grpc_back
new file mode 100644
index 0000000..34bbd15
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_bool.c.grpc_back	
@@ -0,0 +1,123 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+int i2d_ASN1_BOOLEAN(int a, unsigned char **pp)
+{
+    int r;
+    unsigned char *p, *allocated = NULL;
+
+    r = ASN1_object_size(0, 1, V_ASN1_BOOLEAN);
+    if (pp == NULL)
+        return (r);
+
+    if (*pp == NULL) {
+        if ((p = allocated = OPENSSL_malloc(r)) == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+    } else {
+        p = *pp;
+    }
+
+    ASN1_put_object(&p, 0, 1, V_ASN1_BOOLEAN, V_ASN1_UNIVERSAL);
+    *p = (unsigned char)a;
+
+    /*
+     * If a new buffer was allocated, just return it back.
+     * If not, return the incremented buffer pointer.
+     */
+    *pp = allocated != NULL ? allocated : p + 1;
+    return r;
+}
+
+int d2i_ASN1_BOOLEAN(int *a, const unsigned char **pp, long length)
+{
+    int ret = -1;
+    const unsigned char *p;
+    long len;
+    int inf, tag, xclass;
+    int i = 0;
+
+    p = *pp;
+    inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
+    if (inf & 0x80) {
+        i = ASN1_R_BAD_OBJECT_HEADER;
+        goto err;
+    }
+
+    if (tag != V_ASN1_BOOLEAN) {
+        i = ASN1_R_EXPECTING_A_BOOLEAN;
+        goto err;
+    }
+
+    if (len != 1) {
+        i = ASN1_R_BOOLEAN_IS_WRONG_LENGTH;
+        goto err;
+    }
+    ret = (int)*(p++);
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c
new file mode 100644
index 0000000..6a78bb5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+
+void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x)
+{
+    uint8_t *data;
+    size_t len;
+    // Historically, this function did not impose a limit in OpenSSL and is used
+    // to read CRLs, so we leave this without an external bound.
+    if (!BIO_read_asn1(in, &data, &len, INT_MAX)) {
+        return NULL;
+    }
+    const uint8_t *ptr = data;
+    void *ret = ASN1_item_d2i(x, &ptr, len, it);
+    OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x)
+{
+    BIO *b = BIO_new_fp(in, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    void *ret = ASN1_item_d2i_bio(it, b, x);
+    BIO_free(b);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c.grpc_back
new file mode 100644
index 0000000..fd423e2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_d2i_fp.c.grpc_back	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+
+void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x)
+{
+    uint8_t *data;
+    size_t len;
+    // Historically, this function did not impose a limit in OpenSSL and is used
+    // to read CRLs, so we leave this without an external bound.
+    if (!BIO_read_asn1(in, &data, &len, INT_MAX)) {
+        return NULL;
+    }
+    const uint8_t *ptr = data;
+    void *ret = ASN1_item_d2i(x, &ptr, len, it);
+    OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x)
+{
+    BIO *b = BIO_new_fp(in, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    void *ret = ASN1_item_d2i_bio(it, b, x);
+    BIO_free(b);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c
new file mode 100644
index 0000000..838ee9e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c	
@@ -0,0 +1,87 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+/*
+ * ASN1_ITEM version of dup: this follows the model above except we don't
+ * need to allocate the buffer. At some point this could be rewritten to
+ * directly dup the underlying structure instead of doing and encode and
+ * decode.
+ */
+void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
+{
+    unsigned char *b = NULL;
+    const unsigned char *p;
+    long i;
+    void *ret;
+
+    if (x == NULL)
+        return (NULL);
+
+    i = ASN1_item_i2d(x, &b, it);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    p = b;
+    ret = ASN1_item_d2i(NULL, &p, i, it);
+    OPENSSL_free(b);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c.grpc_back
new file mode 100644
index 0000000..9ede851
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_dup.c.grpc_back	
@@ -0,0 +1,87 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+/*
+ * ASN1_ITEM version of dup: this follows the model above except we don't
+ * need to allocate the buffer. At some point this could be rewritten to
+ * directly dup the underlying structure instead of doing and encode and
+ * decode.
+ */
+void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
+{
+    unsigned char *b = NULL;
+    const unsigned char *p;
+    long i;
+    void *ret;
+
+    if (x == NULL)
+        return (NULL);
+
+    i = ASN1_item_i2d(x, &b, it);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    p = b;
+    ret = ASN1_item_d2i(NULL, &p, i, it);
+    OPENSSL_free(b);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c
new file mode 100644
index 0000000..97fdf0f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c	
@@ -0,0 +1,195 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+/*
+ * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
+ * for comments on encoding see a_int.c
+ */
+
+int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
+{
+    int j, k;
+    unsigned int i;
+    unsigned char buf[sizeof(long) + 1];
+    long d;
+
+    a->type = V_ASN1_ENUMERATED;
+    if (a->length < (int)(sizeof(long) + 1)) {
+        if (a->data != NULL)
+            OPENSSL_free(a->data);
+        if ((a->data =
+             (unsigned char *)OPENSSL_malloc(sizeof(long) + 1)) != NULL)
+            OPENSSL_memset((char *)a->data, 0, sizeof(long) + 1);
+    }
+    if (a->data == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    d = v;
+    if (d < 0) {
+        d = -d;
+        a->type = V_ASN1_NEG_ENUMERATED;
+    }
+
+    for (i = 0; i < sizeof(long); i++) {
+        if (d == 0)
+            break;
+        buf[i] = (int)d & 0xff;
+        d >>= 8;
+    }
+    j = 0;
+    for (k = i - 1; k >= 0; k--)
+        a->data[j++] = buf[k];
+    a->length = j;
+    return (1);
+}
+
+long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a)
+{
+    int neg = 0, i;
+
+    if (a == NULL)
+        return (0L);
+    i = a->type;
+    if (i == V_ASN1_NEG_ENUMERATED)
+        neg = 1;
+    else if (i != V_ASN1_ENUMERATED)
+        return -1;
+
+    OPENSSL_STATIC_ASSERT(sizeof(uint64_t) >= sizeof(long),
+                          "long larger than uint64_t");
+
+    if (a->length > (int)sizeof(uint64_t)) {
+        /* hmm... a bit ugly */
+        return -1;
+    }
+
+    uint64_t r64 = 0;
+    if (a->data != NULL) {
+      for (i = 0; i < a->length; i++) {
+          r64 <<= 8;
+          r64 |= (unsigned char)a->data[i];
+      }
+
+      if (r64 > LONG_MAX) {
+          return -1;
+      }
+    }
+
+    long r = (long) r64;
+    if (neg)
+        r = -r;
+
+    return r;
+}
+
+ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai)
+{
+    ASN1_ENUMERATED *ret;
+    int len, j;
+
+    if (ai == NULL)
+        ret = M_ASN1_ENUMERATED_new();
+    else
+        ret = ai;
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+    }
+    if (BN_is_negative(bn))
+        ret->type = V_ASN1_NEG_ENUMERATED;
+    else
+        ret->type = V_ASN1_ENUMERATED;
+    j = BN_num_bits(bn);
+    len = ((j == 0) ? 0 : ((j / 8) + 1));
+    if (ret->length < len + 4) {
+        unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
+        if (!new_data) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ret->data = new_data;
+    }
+
+    ret->length = BN_bn2bin(bn, ret->data);
+    return (ret);
+ err:
+    if (ret != ai)
+        M_ASN1_ENUMERATED_free(ret);
+    return (NULL);
+}
+
+BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn)
+{
+    BIGNUM *ret;
+
+    if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BN_LIB);
+    else if (ai->type == V_ASN1_NEG_ENUMERATED)
+        BN_set_negative(ret, 1);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c.grpc_back
new file mode 100644
index 0000000..11e60ac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_enum.c.grpc_back	
@@ -0,0 +1,195 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+/*
+ * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
+ * for comments on encoding see a_int.c
+ */
+
+int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
+{
+    int j, k;
+    unsigned int i;
+    unsigned char buf[sizeof(long) + 1];
+    long d;
+
+    a->type = V_ASN1_ENUMERATED;
+    if (a->length < (int)(sizeof(long) + 1)) {
+        if (a->data != NULL)
+            OPENSSL_free(a->data);
+        if ((a->data =
+             (unsigned char *)OPENSSL_malloc(sizeof(long) + 1)) != NULL)
+            OPENSSL_memset((char *)a->data, 0, sizeof(long) + 1);
+    }
+    if (a->data == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    d = v;
+    if (d < 0) {
+        d = -d;
+        a->type = V_ASN1_NEG_ENUMERATED;
+    }
+
+    for (i = 0; i < sizeof(long); i++) {
+        if (d == 0)
+            break;
+        buf[i] = (int)d & 0xff;
+        d >>= 8;
+    }
+    j = 0;
+    for (k = i - 1; k >= 0; k--)
+        a->data[j++] = buf[k];
+    a->length = j;
+    return (1);
+}
+
+long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a)
+{
+    int neg = 0, i;
+
+    if (a == NULL)
+        return (0L);
+    i = a->type;
+    if (i == V_ASN1_NEG_ENUMERATED)
+        neg = 1;
+    else if (i != V_ASN1_ENUMERATED)
+        return -1;
+
+    OPENSSL_STATIC_ASSERT(sizeof(uint64_t) >= sizeof(long),
+                          "long larger than uint64_t");
+
+    if (a->length > (int)sizeof(uint64_t)) {
+        /* hmm... a bit ugly */
+        return -1;
+    }
+
+    uint64_t r64 = 0;
+    if (a->data != NULL) {
+      for (i = 0; i < a->length; i++) {
+          r64 <<= 8;
+          r64 |= (unsigned char)a->data[i];
+      }
+
+      if (r64 > LONG_MAX) {
+          return -1;
+      }
+    }
+
+    long r = (long) r64;
+    if (neg)
+        r = -r;
+
+    return r;
+}
+
+ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai)
+{
+    ASN1_ENUMERATED *ret;
+    int len, j;
+
+    if (ai == NULL)
+        ret = M_ASN1_ENUMERATED_new();
+    else
+        ret = ai;
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+    }
+    if (BN_is_negative(bn))
+        ret->type = V_ASN1_NEG_ENUMERATED;
+    else
+        ret->type = V_ASN1_ENUMERATED;
+    j = BN_num_bits(bn);
+    len = ((j == 0) ? 0 : ((j / 8) + 1));
+    if (ret->length < len + 4) {
+        unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
+        if (!new_data) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ret->data = new_data;
+    }
+
+    ret->length = BN_bn2bin(bn, ret->data);
+    return (ret);
+ err:
+    if (ret != ai)
+        M_ASN1_ENUMERATED_free(ret);
+    return (NULL);
+}
+
+BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn)
+{
+    BIGNUM *ret;
+
+    if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BN_LIB);
+    else if (ai->type == V_ASN1_NEG_ENUMERATED)
+        BN_set_negative(ret, 1);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c
new file mode 100644
index 0000000..326e4eb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+
+int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
+{
+    static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 };
+    static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 };
+    char *a;
+    int n, i, l, o;
+
+    if (d->type != V_ASN1_GENERALIZEDTIME)
+        return (0);
+    l = d->length;
+    a = (char *)d->data;
+    o = 0;
+    /*
+     * GENERALIZEDTIME is similar to UTCTIME except the year is represented
+     * as YYYY. This stuff treats everything as a two digit field so make
+     * first two fields 00 to 99
+     */
+    if (l < 13)
+        goto err;
+    for (i = 0; i < 7; i++) {
+        if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
+            i++;
+            if (tm)
+                tm->tm_sec = 0;
+            break;
+        }
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = (n * 10) + a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((n < min[i]) || (n > max[i]))
+            goto err;
+        if (tm) {
+            switch (i) {
+            case 0:
+                tm->tm_year = n * 100 - 1900;
+                break;
+            case 1:
+                tm->tm_year += n;
+                break;
+            case 2:
+                tm->tm_mon = n - 1;
+                break;
+            case 3:
+                tm->tm_mday = n;
+                break;
+            case 4:
+                tm->tm_hour = n;
+                break;
+            case 5:
+                tm->tm_min = n;
+                break;
+            case 6:
+                tm->tm_sec = n;
+                break;
+            }
+        }
+    }
+    /*
+     * Optional fractional seconds: decimal point followed by one or more
+     * digits.
+     */
+    if (a[o] == '.') {
+        if (++o > l)
+            goto err;
+        i = o;
+        while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
+            o++;
+        /* Must have at least one digit after decimal point */
+        if (i == o)
+            goto err;
+    }
+
+    if (a[o] == 'Z')
+        o++;
+    else if ((a[o] == '+') || (a[o] == '-')) {
+        int offsign = a[o] == '-' ? 1 : -1, offset = 0;
+        o++;
+        if (o + 4 > l)
+            goto err;
+        for (i = 7; i < 9; i++) {
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = a[o] - '0';
+            o++;
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = (n * 10) + a[o] - '0';
+            if ((n < min[i]) || (n > max[i]))
+                goto err;
+            if (tm) {
+                if (i == 7)
+                    offset = n * 3600;
+                else if (i == 8)
+                    offset += n * 60;
+            }
+            o++;
+        }
+        if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
+            return 0;
+    } else if (a[o]) {
+        /* Missing time zone information. */
+        goto err;
+    }
+    return (o == l);
+ err:
+    return (0);
+}
+
+int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
+{
+    return asn1_generalizedtime_to_tm(NULL, d);
+}
+
+int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
+{
+    ASN1_GENERALIZEDTIME t;
+
+    t.type = V_ASN1_GENERALIZEDTIME;
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    if (ASN1_GENERALIZEDTIME_check(&t)) {
+        if (s != NULL) {
+            if (!ASN1_STRING_set((ASN1_STRING *)s,
+                                 (unsigned char *)str, t.length))
+                return 0;
+            s->type = V_ASN1_GENERALIZEDTIME;
+        }
+        return (1);
+    } else
+        return (0);
+}
+
+ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
+                                               time_t t)
+{
+    return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
+}
+
+ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
+                                               time_t t, int offset_day,
+                                               long offset_sec)
+{
+    char *p;
+    struct tm *ts;
+    struct tm data;
+    size_t len = 20;
+    ASN1_GENERALIZEDTIME *tmps = NULL;
+
+    if (s == NULL)
+        tmps = ASN1_GENERALIZEDTIME_new();
+    else
+        tmps = s;
+    if (tmps == NULL)
+        return NULL;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL)
+        goto err;
+
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            goto err;
+    }
+
+    p = (char *)tmps->data;
+    if ((p == NULL) || ((size_t)tmps->length < len)) {
+        p = OPENSSL_malloc(len);
+        if (p == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_free(tmps->data);
+        tmps->data = (unsigned char *)p;
+    }
+
+    BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900,
+                 ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
+                 ts->tm_sec);
+    tmps->length = strlen(p);
+    tmps->type = V_ASN1_GENERALIZEDTIME;
+    return tmps;
+ err:
+    if (s == NULL)
+        ASN1_GENERALIZEDTIME_free(tmps);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c.grpc_back
new file mode 100644
index 0000000..5fcb65b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_gentm.c.grpc_back	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+
+int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
+{
+    static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 };
+    static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 };
+    char *a;
+    int n, i, l, o;
+
+    if (d->type != V_ASN1_GENERALIZEDTIME)
+        return (0);
+    l = d->length;
+    a = (char *)d->data;
+    o = 0;
+    /*
+     * GENERALIZEDTIME is similar to UTCTIME except the year is represented
+     * as YYYY. This stuff treats everything as a two digit field so make
+     * first two fields 00 to 99
+     */
+    if (l < 13)
+        goto err;
+    for (i = 0; i < 7; i++) {
+        if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
+            i++;
+            if (tm)
+                tm->tm_sec = 0;
+            break;
+        }
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = (n * 10) + a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((n < min[i]) || (n > max[i]))
+            goto err;
+        if (tm) {
+            switch (i) {
+            case 0:
+                tm->tm_year = n * 100 - 1900;
+                break;
+            case 1:
+                tm->tm_year += n;
+                break;
+            case 2:
+                tm->tm_mon = n - 1;
+                break;
+            case 3:
+                tm->tm_mday = n;
+                break;
+            case 4:
+                tm->tm_hour = n;
+                break;
+            case 5:
+                tm->tm_min = n;
+                break;
+            case 6:
+                tm->tm_sec = n;
+                break;
+            }
+        }
+    }
+    /*
+     * Optional fractional seconds: decimal point followed by one or more
+     * digits.
+     */
+    if (a[o] == '.') {
+        if (++o > l)
+            goto err;
+        i = o;
+        while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
+            o++;
+        /* Must have at least one digit after decimal point */
+        if (i == o)
+            goto err;
+    }
+
+    if (a[o] == 'Z')
+        o++;
+    else if ((a[o] == '+') || (a[o] == '-')) {
+        int offsign = a[o] == '-' ? 1 : -1, offset = 0;
+        o++;
+        if (o + 4 > l)
+            goto err;
+        for (i = 7; i < 9; i++) {
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = a[o] - '0';
+            o++;
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = (n * 10) + a[o] - '0';
+            if ((n < min[i]) || (n > max[i]))
+                goto err;
+            if (tm) {
+                if (i == 7)
+                    offset = n * 3600;
+                else if (i == 8)
+                    offset += n * 60;
+            }
+            o++;
+        }
+        if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
+            return 0;
+    } else if (a[o]) {
+        /* Missing time zone information. */
+        goto err;
+    }
+    return (o == l);
+ err:
+    return (0);
+}
+
+int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
+{
+    return asn1_generalizedtime_to_tm(NULL, d);
+}
+
+int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
+{
+    ASN1_GENERALIZEDTIME t;
+
+    t.type = V_ASN1_GENERALIZEDTIME;
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    if (ASN1_GENERALIZEDTIME_check(&t)) {
+        if (s != NULL) {
+            if (!ASN1_STRING_set((ASN1_STRING *)s,
+                                 (unsigned char *)str, t.length))
+                return 0;
+            s->type = V_ASN1_GENERALIZEDTIME;
+        }
+        return (1);
+    } else
+        return (0);
+}
+
+ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
+                                               time_t t)
+{
+    return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
+}
+
+ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
+                                               time_t t, int offset_day,
+                                               long offset_sec)
+{
+    char *p;
+    struct tm *ts;
+    struct tm data;
+    size_t len = 20;
+    ASN1_GENERALIZEDTIME *tmps = NULL;
+
+    if (s == NULL)
+        tmps = ASN1_GENERALIZEDTIME_new();
+    else
+        tmps = s;
+    if (tmps == NULL)
+        return NULL;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL)
+        goto err;
+
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            goto err;
+    }
+
+    p = (char *)tmps->data;
+    if ((p == NULL) || ((size_t)tmps->length < len)) {
+        p = OPENSSL_malloc(len);
+        if (p == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_free(tmps->data);
+        tmps->data = (unsigned char *)p;
+    }
+
+    BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900,
+                 ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
+                 ts->tm_sec);
+    tmps->length = strlen(p);
+    tmps->type = V_ASN1_GENERALIZEDTIME;
+    return tmps;
+ err:
+    if (s == NULL)
+        ASN1_GENERALIZEDTIME_free(tmps);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c
new file mode 100644
index 0000000..8af01a3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c	
@@ -0,0 +1,88 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+
+int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x)
+{
+    BIO *b = BIO_new_fp(out, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = ASN1_item_i2d_bio(it, b, x);
+    BIO_free(b);
+    return ret;
+}
+
+int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
+{
+    unsigned char *b = NULL;
+    int n = ASN1_item_i2d(x, &b, it);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+
+    int ret = BIO_write_all(out, b, n);
+    OPENSSL_free(b);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c.grpc_back
new file mode 100644
index 0000000..db0d812
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_i2d_fp.c.grpc_back	
@@ -0,0 +1,88 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+
+int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x)
+{
+    BIO *b = BIO_new_fp(out, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = ASN1_item_i2d_bio(it, b, x);
+    BIO_free(b);
+    return ret;
+}
+
+int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
+{
+    unsigned char *b = NULL;
+    int n = ASN1_item_i2d(x, &b, it);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+
+    int ret = BIO_write_all(out, b, n);
+    OPENSSL_free(b);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c
new file mode 100644
index 0000000..f652250
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c	
@@ -0,0 +1,420 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <string.h>
+#include <limits.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+ASN1_INTEGER *ASN1_INTEGER_dup(const ASN1_INTEGER *x)
+{
+    return M_ASN1_INTEGER_dup(x);
+}
+
+int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y)
+{
+    int neg, ret;
+    /* Compare signs */
+    neg = x->type & V_ASN1_NEG;
+    if (neg != (y->type & V_ASN1_NEG)) {
+        if (neg)
+            return -1;
+        else
+            return 1;
+    }
+
+    ret = ASN1_STRING_cmp(x, y);
+
+    if (neg)
+        return -ret;
+    else
+        return ret;
+}
+
+/*
+ * This converts an ASN1 INTEGER into its content encoding.
+ * The internal representation is an ASN1_STRING whose data is a big endian
+ * representation of the value, ignoring the sign. The sign is determined by
+ * the type: V_ASN1_INTEGER for positive and V_ASN1_NEG_INTEGER for negative.
+ *
+ * Positive integers are no problem: they are almost the same as the DER
+ * encoding, except if the first byte is >= 0x80 we need to add a zero pad.
+ *
+ * Negative integers are a bit trickier...
+ * The DER representation of negative integers is in 2s complement form.
+ * The internal form is converted by complementing each octet and finally
+ * adding one to the result. This can be done less messily with a little trick.
+ * If the internal form has trailing zeroes then they will become FF by the
+ * complement and 0 by the add one (due to carry) so just copy as many trailing
+ * zeros to the destination as there are in the source. The carry will add one
+ * to the last none zero octet: so complement this octet and add one and finally
+ * complement any left over until you get to the start of the string.
+ *
+ * Padding is a little trickier too. If the first bytes is > 0x80 then we pad
+ * with 0xff. However if the first byte is 0x80 and one of the following bytes
+ * is non-zero we pad with 0xff. The reason for this distinction is that 0x80
+ * followed by optional zeros isn't padded.
+ */
+
+int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp)
+{
+    int pad = 0, ret, i, neg;
+    unsigned char *p, *n, pb = 0;
+
+    if (a == NULL)
+        return (0);
+    neg = a->type & V_ASN1_NEG;
+    if (a->length == 0)
+        ret = 1;
+    else {
+        ret = a->length;
+        i = a->data[0];
+        if (ret == 1 && i == 0)
+            neg = 0;
+        if (!neg && (i > 127)) {
+            pad = 1;
+            pb = 0;
+        } else if (neg) {
+            if (i > 128) {
+                pad = 1;
+                pb = 0xFF;
+            } else if (i == 128) {
+                /*
+                 * Special case: if any other bytes non zero we pad:
+                 * otherwise we don't.
+                 */
+                for (i = 1; i < a->length; i++)
+                    if (a->data[i]) {
+                        pad = 1;
+                        pb = 0xFF;
+                        break;
+                    }
+            }
+        }
+        ret += pad;
+    }
+    if (pp == NULL)
+        return (ret);
+    p = *pp;
+
+    if (pad)
+        *(p++) = pb;
+    if (a->length == 0)
+        *(p++) = 0;
+    else if (!neg)
+        OPENSSL_memcpy(p, a->data, (unsigned int)a->length);
+    else {
+        /* Begin at the end of the encoding */
+        n = a->data + a->length - 1;
+        p += a->length - 1;
+        i = a->length;
+        /* Copy zeros to destination as long as source is zero */
+        while (!*n && i > 1) {
+            *(p--) = 0;
+            n--;
+            i--;
+        }
+        /* Complement and increment next octet */
+        *(p--) = ((*(n--)) ^ 0xff) + 1;
+        i--;
+        /* Complement any octets left */
+        for (; i > 0; i--)
+            *(p--) = *(n--) ^ 0xff;
+    }
+
+    *pp += ret;
+    return (ret);
+}
+
+/* Convert just ASN1 INTEGER content octets to ASN1_INTEGER structure */
+
+ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a, const unsigned char **pp,
+                               long len)
+{
+    ASN1_INTEGER *ret = NULL;
+    const unsigned char *p, *pend;
+    unsigned char *to, *s;
+    int i;
+
+    /*
+     * This function can handle lengths up to INT_MAX - 1, but the rest of the
+     * legacy ASN.1 code mixes integer types, so avoid exposing it to
+     * ASN1_INTEGERS with larger lengths.
+     */
+    if (len < 0 || len > INT_MAX / 2) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+        return NULL;
+    }
+
+    if ((a == NULL) || ((*a) == NULL)) {
+        if ((ret = M_ASN1_INTEGER_new()) == NULL)
+            return (NULL);
+        ret->type = V_ASN1_INTEGER;
+    } else
+        ret = (*a);
+
+    p = *pp;
+    pend = p + len;
+
+    /*
+     * We must OPENSSL_malloc stuff, even for 0 bytes otherwise it signifies
+     * a missing NULL parameter.
+     */
+    s = (unsigned char *)OPENSSL_malloc((int)len + 1);
+    if (s == NULL) {
+        i = ERR_R_MALLOC_FAILURE;
+        goto err;
+    }
+    to = s;
+    if (!len) {
+        /*
+         * Strictly speaking this is an illegal INTEGER but we tolerate it.
+         */
+        ret->type = V_ASN1_INTEGER;
+    } else if (*p & 0x80) {     /* a negative number */
+        ret->type = V_ASN1_NEG_INTEGER;
+        if ((*p == 0xff) && (len != 1)) {
+            p++;
+            len--;
+        }
+        i = len;
+        p += i - 1;
+        to += i - 1;
+        while ((!*p) && i) {
+            *(to--) = 0;
+            i--;
+            p--;
+        }
+        /*
+         * Special case: if all zeros then the number will be of the form FF
+         * followed by n zero bytes: this corresponds to 1 followed by n zero
+         * bytes. We've already written n zeros so we just append an extra
+         * one and set the first byte to a 1. This is treated separately
+         * because it is the only case where the number of bytes is larger
+         * than len.
+         */
+        if (!i) {
+            *s = 1;
+            s[len] = 0;
+            len++;
+        } else {
+            *(to--) = (*(p--) ^ 0xff) + 1;
+            i--;
+            for (; i > 0; i--)
+                *(to--) = *(p--) ^ 0xff;
+        }
+    } else {
+        ret->type = V_ASN1_INTEGER;
+        if ((*p == 0) && (len != 1)) {
+            p++;
+            len--;
+        }
+        OPENSSL_memcpy(s, p, (int)len);
+    }
+
+    if (ret->data != NULL)
+        OPENSSL_free(ret->data);
+    ret->data = s;
+    ret->length = (int)len;
+    if (a != NULL)
+        (*a) = ret;
+    *pp = pend;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        M_ASN1_INTEGER_free(ret);
+    return (NULL);
+}
+
+int ASN1_INTEGER_set(ASN1_INTEGER *a, long v)
+{
+    if (v >= 0) {
+        return ASN1_INTEGER_set_uint64(a, (uint64_t) v);
+    }
+
+    if (!ASN1_INTEGER_set_uint64(a, 0 - (uint64_t) v)) {
+        return 0;
+    }
+
+    a->type = V_ASN1_NEG_INTEGER;
+    return 1;
+}
+
+int ASN1_INTEGER_set_uint64(ASN1_INTEGER *out, uint64_t v)
+{
+    uint8_t *const newdata = OPENSSL_malloc(sizeof(uint64_t));
+    if (newdata == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+
+    OPENSSL_free(out->data);
+    out->data = newdata;
+    v = CRYPTO_bswap8(v);
+    memcpy(out->data, &v, sizeof(v));
+
+    out->type = V_ASN1_INTEGER;
+
+    size_t leading_zeros;
+    for (leading_zeros = 0; leading_zeros < sizeof(uint64_t) - 1;
+         leading_zeros++) {
+        if (out->data[leading_zeros] != 0) {
+            break;
+        }
+    }
+
+    out->length = sizeof(uint64_t) - leading_zeros;
+    OPENSSL_memmove(out->data, out->data + leading_zeros, out->length);
+
+    return 1;
+}
+
+long ASN1_INTEGER_get(const ASN1_INTEGER *a)
+{
+    int neg = 0, i;
+
+    if (a == NULL)
+        return (0L);
+    i = a->type;
+    if (i == V_ASN1_NEG_INTEGER)
+        neg = 1;
+    else if (i != V_ASN1_INTEGER)
+        return -1;
+
+    OPENSSL_STATIC_ASSERT(sizeof(uint64_t) >= sizeof(long),
+                          "long larger than uint64_t");
+
+    if (a->length > (int)sizeof(uint64_t)) {
+        /* hmm... a bit ugly, return all ones */
+        return -1;
+    }
+
+    uint64_t r64 = 0;
+    if (a->data != NULL) {
+      for (i = 0; i < a->length; i++) {
+          r64 <<= 8;
+          r64 |= (unsigned char)a->data[i];
+      }
+
+      if (r64 > LONG_MAX) {
+          return -1;
+      }
+    }
+
+    long r = (long) r64;
+    if (neg)
+        r = -r;
+
+    return r;
+}
+
+ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai)
+{
+    ASN1_INTEGER *ret;
+    int len, j;
+
+    if (ai == NULL)
+        ret = M_ASN1_INTEGER_new();
+    else
+        ret = ai;
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+    }
+    if (BN_is_negative(bn) && !BN_is_zero(bn))
+        ret->type = V_ASN1_NEG_INTEGER;
+    else
+        ret->type = V_ASN1_INTEGER;
+    j = BN_num_bits(bn);
+    len = ((j == 0) ? 0 : ((j / 8) + 1));
+    if (ret->length < len + 4) {
+        unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
+        if (!new_data) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ret->data = new_data;
+    }
+    ret->length = BN_bn2bin(bn, ret->data);
+    /* Correct zero case */
+    if (!ret->length) {
+        ret->data[0] = 0;
+        ret->length = 1;
+    }
+    return (ret);
+ err:
+    if (ret != ai)
+        M_ASN1_INTEGER_free(ret);
+    return (NULL);
+}
+
+BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn)
+{
+    BIGNUM *ret;
+
+    if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BN_LIB);
+    else if (ai->type == V_ASN1_NEG_INTEGER)
+        BN_set_negative(ret, 1);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c.grpc_back
new file mode 100644
index 0000000..7b483f2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_int.c.grpc_back	
@@ -0,0 +1,420 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <string.h>
+#include <limits.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+ASN1_INTEGER *ASN1_INTEGER_dup(const ASN1_INTEGER *x)
+{
+    return M_ASN1_INTEGER_dup(x);
+}
+
+int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y)
+{
+    int neg, ret;
+    /* Compare signs */
+    neg = x->type & V_ASN1_NEG;
+    if (neg != (y->type & V_ASN1_NEG)) {
+        if (neg)
+            return -1;
+        else
+            return 1;
+    }
+
+    ret = ASN1_STRING_cmp(x, y);
+
+    if (neg)
+        return -ret;
+    else
+        return ret;
+}
+
+/*
+ * This converts an ASN1 INTEGER into its content encoding.
+ * The internal representation is an ASN1_STRING whose data is a big endian
+ * representation of the value, ignoring the sign. The sign is determined by
+ * the type: V_ASN1_INTEGER for positive and V_ASN1_NEG_INTEGER for negative.
+ *
+ * Positive integers are no problem: they are almost the same as the DER
+ * encoding, except if the first byte is >= 0x80 we need to add a zero pad.
+ *
+ * Negative integers are a bit trickier...
+ * The DER representation of negative integers is in 2s complement form.
+ * The internal form is converted by complementing each octet and finally
+ * adding one to the result. This can be done less messily with a little trick.
+ * If the internal form has trailing zeroes then they will become FF by the
+ * complement and 0 by the add one (due to carry) so just copy as many trailing
+ * zeros to the destination as there are in the source. The carry will add one
+ * to the last none zero octet: so complement this octet and add one and finally
+ * complement any left over until you get to the start of the string.
+ *
+ * Padding is a little trickier too. If the first bytes is > 0x80 then we pad
+ * with 0xff. However if the first byte is 0x80 and one of the following bytes
+ * is non-zero we pad with 0xff. The reason for this distinction is that 0x80
+ * followed by optional zeros isn't padded.
+ */
+
+int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp)
+{
+    int pad = 0, ret, i, neg;
+    unsigned char *p, *n, pb = 0;
+
+    if (a == NULL)
+        return (0);
+    neg = a->type & V_ASN1_NEG;
+    if (a->length == 0)
+        ret = 1;
+    else {
+        ret = a->length;
+        i = a->data[0];
+        if (ret == 1 && i == 0)
+            neg = 0;
+        if (!neg && (i > 127)) {
+            pad = 1;
+            pb = 0;
+        } else if (neg) {
+            if (i > 128) {
+                pad = 1;
+                pb = 0xFF;
+            } else if (i == 128) {
+                /*
+                 * Special case: if any other bytes non zero we pad:
+                 * otherwise we don't.
+                 */
+                for (i = 1; i < a->length; i++)
+                    if (a->data[i]) {
+                        pad = 1;
+                        pb = 0xFF;
+                        break;
+                    }
+            }
+        }
+        ret += pad;
+    }
+    if (pp == NULL)
+        return (ret);
+    p = *pp;
+
+    if (pad)
+        *(p++) = pb;
+    if (a->length == 0)
+        *(p++) = 0;
+    else if (!neg)
+        OPENSSL_memcpy(p, a->data, (unsigned int)a->length);
+    else {
+        /* Begin at the end of the encoding */
+        n = a->data + a->length - 1;
+        p += a->length - 1;
+        i = a->length;
+        /* Copy zeros to destination as long as source is zero */
+        while (!*n && i > 1) {
+            *(p--) = 0;
+            n--;
+            i--;
+        }
+        /* Complement and increment next octet */
+        *(p--) = ((*(n--)) ^ 0xff) + 1;
+        i--;
+        /* Complement any octets left */
+        for (; i > 0; i--)
+            *(p--) = *(n--) ^ 0xff;
+    }
+
+    *pp += ret;
+    return (ret);
+}
+
+/* Convert just ASN1 INTEGER content octets to ASN1_INTEGER structure */
+
+ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a, const unsigned char **pp,
+                               long len)
+{
+    ASN1_INTEGER *ret = NULL;
+    const unsigned char *p, *pend;
+    unsigned char *to, *s;
+    int i;
+
+    /*
+     * This function can handle lengths up to INT_MAX - 1, but the rest of the
+     * legacy ASN.1 code mixes integer types, so avoid exposing it to
+     * ASN1_INTEGERS with larger lengths.
+     */
+    if (len < 0 || len > INT_MAX / 2) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+        return NULL;
+    }
+
+    if ((a == NULL) || ((*a) == NULL)) {
+        if ((ret = M_ASN1_INTEGER_new()) == NULL)
+            return (NULL);
+        ret->type = V_ASN1_INTEGER;
+    } else
+        ret = (*a);
+
+    p = *pp;
+    pend = p + len;
+
+    /*
+     * We must OPENSSL_malloc stuff, even for 0 bytes otherwise it signifies
+     * a missing NULL parameter.
+     */
+    s = (unsigned char *)OPENSSL_malloc((int)len + 1);
+    if (s == NULL) {
+        i = ERR_R_MALLOC_FAILURE;
+        goto err;
+    }
+    to = s;
+    if (!len) {
+        /*
+         * Strictly speaking this is an illegal INTEGER but we tolerate it.
+         */
+        ret->type = V_ASN1_INTEGER;
+    } else if (*p & 0x80) {     /* a negative number */
+        ret->type = V_ASN1_NEG_INTEGER;
+        if ((*p == 0xff) && (len != 1)) {
+            p++;
+            len--;
+        }
+        i = len;
+        p += i - 1;
+        to += i - 1;
+        while ((!*p) && i) {
+            *(to--) = 0;
+            i--;
+            p--;
+        }
+        /*
+         * Special case: if all zeros then the number will be of the form FF
+         * followed by n zero bytes: this corresponds to 1 followed by n zero
+         * bytes. We've already written n zeros so we just append an extra
+         * one and set the first byte to a 1. This is treated separately
+         * because it is the only case where the number of bytes is larger
+         * than len.
+         */
+        if (!i) {
+            *s = 1;
+            s[len] = 0;
+            len++;
+        } else {
+            *(to--) = (*(p--) ^ 0xff) + 1;
+            i--;
+            for (; i > 0; i--)
+                *(to--) = *(p--) ^ 0xff;
+        }
+    } else {
+        ret->type = V_ASN1_INTEGER;
+        if ((*p == 0) && (len != 1)) {
+            p++;
+            len--;
+        }
+        OPENSSL_memcpy(s, p, (int)len);
+    }
+
+    if (ret->data != NULL)
+        OPENSSL_free(ret->data);
+    ret->data = s;
+    ret->length = (int)len;
+    if (a != NULL)
+        (*a) = ret;
+    *pp = pend;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        M_ASN1_INTEGER_free(ret);
+    return (NULL);
+}
+
+int ASN1_INTEGER_set(ASN1_INTEGER *a, long v)
+{
+    if (v >= 0) {
+        return ASN1_INTEGER_set_uint64(a, (uint64_t) v);
+    }
+
+    if (!ASN1_INTEGER_set_uint64(a, 0 - (uint64_t) v)) {
+        return 0;
+    }
+
+    a->type = V_ASN1_NEG_INTEGER;
+    return 1;
+}
+
+int ASN1_INTEGER_set_uint64(ASN1_INTEGER *out, uint64_t v)
+{
+    uint8_t *const newdata = OPENSSL_malloc(sizeof(uint64_t));
+    if (newdata == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+
+    OPENSSL_free(out->data);
+    out->data = newdata;
+    v = CRYPTO_bswap8(v);
+    memcpy(out->data, &v, sizeof(v));
+
+    out->type = V_ASN1_INTEGER;
+
+    size_t leading_zeros;
+    for (leading_zeros = 0; leading_zeros < sizeof(uint64_t) - 1;
+         leading_zeros++) {
+        if (out->data[leading_zeros] != 0) {
+            break;
+        }
+    }
+
+    out->length = sizeof(uint64_t) - leading_zeros;
+    OPENSSL_memmove(out->data, out->data + leading_zeros, out->length);
+
+    return 1;
+}
+
+long ASN1_INTEGER_get(const ASN1_INTEGER *a)
+{
+    int neg = 0, i;
+
+    if (a == NULL)
+        return (0L);
+    i = a->type;
+    if (i == V_ASN1_NEG_INTEGER)
+        neg = 1;
+    else if (i != V_ASN1_INTEGER)
+        return -1;
+
+    OPENSSL_STATIC_ASSERT(sizeof(uint64_t) >= sizeof(long),
+                          "long larger than uint64_t");
+
+    if (a->length > (int)sizeof(uint64_t)) {
+        /* hmm... a bit ugly, return all ones */
+        return -1;
+    }
+
+    uint64_t r64 = 0;
+    if (a->data != NULL) {
+      for (i = 0; i < a->length; i++) {
+          r64 <<= 8;
+          r64 |= (unsigned char)a->data[i];
+      }
+
+      if (r64 > LONG_MAX) {
+          return -1;
+      }
+    }
+
+    long r = (long) r64;
+    if (neg)
+        r = -r;
+
+    return r;
+}
+
+ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai)
+{
+    ASN1_INTEGER *ret;
+    int len, j;
+
+    if (ai == NULL)
+        ret = M_ASN1_INTEGER_new();
+    else
+        ret = ai;
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+    }
+    if (BN_is_negative(bn) && !BN_is_zero(bn))
+        ret->type = V_ASN1_NEG_INTEGER;
+    else
+        ret->type = V_ASN1_INTEGER;
+    j = BN_num_bits(bn);
+    len = ((j == 0) ? 0 : ((j / 8) + 1));
+    if (ret->length < len + 4) {
+        unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
+        if (!new_data) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ret->data = new_data;
+    }
+    ret->length = BN_bn2bin(bn, ret->data);
+    /* Correct zero case */
+    if (!ret->length) {
+        ret->data[0] = 0;
+        ret->length = 1;
+    }
+    return (ret);
+ err:
+    if (ret != ai)
+        M_ASN1_INTEGER_free(ret);
+    return (NULL);
+}
+
+BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn)
+{
+    BIGNUM *ret;
+
+    if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BN_LIB);
+    else if (ai->type == V_ASN1_NEG_INTEGER)
+        BN_set_negative(ret, 1);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c
new file mode 100644
index 0000000..3eef437
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c	
@@ -0,0 +1,305 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+#include "../bytestring/internal.h"
+
+static int is_printable(uint32_t value);
+
+/*
+ * These functions take a string in UTF8, ASCII or multibyte form and a mask
+ * of permissible ASN1 string types. It then works out the minimal type
+ * (using the order Printable < IA5 < T61 < BMP < Universal < UTF8) and
+ * creates a string of the correct type with the supplied data. Yes this is
+ * horrible: it has to be :-( The 'ncopy' form checks minimum and maximum
+ * size limits too.
+ */
+
+int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
+                       int inform, unsigned long mask)
+{
+    return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
+}
+
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_BMPSTRING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_UNIVERSALSTRING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_UTF8STRING)
+
+int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
+                        int inform, unsigned long mask,
+                        long minsize, long maxsize)
+{
+    int str_type;
+    char free_out;
+    ASN1_STRING *dest;
+    size_t nchar = 0;
+    char strbuf[32];
+    if (len == -1)
+        len = strlen((const char *)in);
+    if (!mask)
+        mask = DIRSTRING_TYPE;
+
+    int (*decode_func)(CBS *, uint32_t*);
+    int error;
+    switch (inform) {
+    case MBSTRING_BMP:
+        decode_func = cbs_get_ucs2_be;
+        error = ASN1_R_INVALID_BMPSTRING;
+        break;
+
+    case MBSTRING_UNIV:
+        decode_func = cbs_get_utf32_be;
+        error = ASN1_R_INVALID_UNIVERSALSTRING;
+        break;
+
+    case MBSTRING_UTF8:
+        decode_func = cbs_get_utf8;
+        error = ASN1_R_INVALID_UTF8STRING;
+        break;
+
+    case MBSTRING_ASC:
+        decode_func = cbs_get_latin1;
+        error = ERR_R_INTERNAL_ERROR;  // Latin-1 inputs are never invalid.
+        break;
+
+    default:
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+        return -1;
+    }
+
+    /* Check |minsize| and |maxsize| and work out the minimal type, if any. */
+    CBS cbs;
+    CBS_init(&cbs, in, len);
+    size_t utf8_len = 0;
+    while (CBS_len(&cbs) != 0) {
+        uint32_t c;
+        if (!decode_func(&cbs, &c)) {
+            OPENSSL_PUT_ERROR(ASN1, error);
+            return -1;
+        }
+        if (nchar == 0 &&
+            (inform == MBSTRING_BMP || inform == MBSTRING_UNIV) &&
+            c == 0xfeff) {
+            /* Reject byte-order mark. We could drop it but that would mean
+             * adding ambiguity around whether a BOM was included or not when
+             * matching strings.
+             *
+             * For a little-endian UCS-2 string, the BOM will appear as 0xfffe
+             * and will be rejected as noncharacter, below. */
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_CHARACTERS);
+            return -1;
+        }
+
+        /* Update which output formats are still possible. */
+        if ((mask & B_ASN1_PRINTABLESTRING) && !is_printable(c)) {
+            mask &= ~B_ASN1_PRINTABLESTRING;
+        }
+        if ((mask & B_ASN1_IA5STRING) && (c > 127)) {
+            mask &= ~B_ASN1_IA5STRING;
+        }
+        if ((mask & B_ASN1_T61STRING) && (c > 0xff)) {
+            mask &= ~B_ASN1_T61STRING;
+        }
+        if ((mask & B_ASN1_BMPSTRING) && (c > 0xffff)) {
+            mask &= ~B_ASN1_BMPSTRING;
+        }
+        if (!mask) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_CHARACTERS);
+            return -1;
+        }
+
+        nchar++;
+        utf8_len += cbb_get_utf8_len(c);
+    }
+
+    if (minsize > 0 && nchar < (size_t)minsize) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_SHORT);
+        BIO_snprintf(strbuf, sizeof strbuf, "%ld", minsize);
+        ERR_add_error_data(2, "minsize=", strbuf);
+        return -1;
+    }
+
+    if (maxsize > 0 && nchar > (size_t)maxsize) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_LONG);
+        BIO_snprintf(strbuf, sizeof strbuf, "%ld", maxsize);
+        ERR_add_error_data(2, "maxsize=", strbuf);
+        return -1;
+    }
+
+    /* Now work out output format and string type */
+    int (*encode_func)(CBB *, uint32_t) = cbb_add_latin1;
+    size_t size_estimate = nchar;
+    int outform = MBSTRING_ASC;
+    if (mask & B_ASN1_PRINTABLESTRING) {
+        str_type = V_ASN1_PRINTABLESTRING;
+    } else if (mask & B_ASN1_IA5STRING) {
+        str_type = V_ASN1_IA5STRING;
+    } else if (mask & B_ASN1_T61STRING) {
+        str_type = V_ASN1_T61STRING;
+    } else if (mask & B_ASN1_BMPSTRING) {
+        str_type = V_ASN1_BMPSTRING;
+        outform = MBSTRING_BMP;
+        encode_func = cbb_add_ucs2_be;
+        size_estimate = 2 * nchar;
+    } else if (mask & B_ASN1_UNIVERSALSTRING) {
+        str_type = V_ASN1_UNIVERSALSTRING;
+        encode_func = cbb_add_utf32_be;
+        size_estimate = 4 * nchar;
+        outform = MBSTRING_UNIV;
+    } else {
+        str_type = V_ASN1_UTF8STRING;
+        outform = MBSTRING_UTF8;
+        encode_func = cbb_add_utf8;
+        size_estimate = utf8_len;
+    }
+
+    if (!out)
+        return str_type;
+    if (*out) {
+        free_out = 0;
+        dest = *out;
+        if (dest->data) {
+            dest->length = 0;
+            OPENSSL_free(dest->data);
+            dest->data = NULL;
+        }
+        dest->type = str_type;
+    } else {
+        free_out = 1;
+        dest = ASN1_STRING_type_new(str_type);
+        if (!dest) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return -1;
+        }
+        *out = dest;
+    }
+
+    /* If both the same type just copy across */
+    if (inform == outform) {
+        if (!ASN1_STRING_set(dest, in, len)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return -1;
+        }
+        return str_type;
+    }
+
+    CBB cbb;
+    if (!CBB_init(&cbb, size_estimate + 1)) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    CBS_init(&cbs, in, len);
+    while (CBS_len(&cbs) != 0) {
+        uint32_t c;
+        if (!decode_func(&cbs, &c) ||
+            !encode_func(&cbb, c)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+    }
+    uint8_t *data = NULL;
+    size_t data_len;
+    if (/* OpenSSL historically NUL-terminated this value with a single byte,
+         * even for |MBSTRING_BMP| and |MBSTRING_UNIV|. */
+        !CBB_add_u8(&cbb, 0) ||
+        !CBB_finish(&cbb, &data, &data_len) ||
+        data_len < 1 ||
+        data_len > INT_MAX) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_INTERNAL_ERROR);
+        OPENSSL_free(data);
+        goto err;
+    }
+    dest->length = (int)(data_len - 1);
+    dest->data = data;
+    return str_type;
+
+ err:
+    if (free_out)
+        ASN1_STRING_free(dest);
+    CBB_cleanup(&cbb);
+    return -1;
+}
+
+/* Return 1 if the character is permitted in a PrintableString */
+static int is_printable(uint32_t value)
+{
+    int ch;
+    if (value > 0x7f)
+        return 0;
+    ch = (int)value;
+    /*
+     * Note: we can't use 'isalnum' because certain accented characters may
+     * count as alphanumeric in some environments.
+     */
+    if ((ch >= 'a') && (ch <= 'z'))
+        return 1;
+    if ((ch >= 'A') && (ch <= 'Z'))
+        return 1;
+    if ((ch >= '0') && (ch <= '9'))
+        return 1;
+    if ((ch == ' ') || strchr("'()+,-./:=?", ch))
+        return 1;
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c.grpc_back
new file mode 100644
index 0000000..1bbcd1b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_mbstr.c.grpc_back	
@@ -0,0 +1,305 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+#include "../bytestring/internal.h"
+
+static int is_printable(uint32_t value);
+
+/*
+ * These functions take a string in UTF8, ASCII or multibyte form and a mask
+ * of permissible ASN1 string types. It then works out the minimal type
+ * (using the order Printable < IA5 < T61 < BMP < Universal < UTF8) and
+ * creates a string of the correct type with the supplied data. Yes this is
+ * horrible: it has to be :-( The 'ncopy' form checks minimum and maximum
+ * size limits too.
+ */
+
+int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
+                       int inform, unsigned long mask)
+{
+    return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
+}
+
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_BMPSTRING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_UNIVERSALSTRING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_UTF8STRING)
+
+int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
+                        int inform, unsigned long mask,
+                        long minsize, long maxsize)
+{
+    int str_type;
+    char free_out;
+    ASN1_STRING *dest;
+    size_t nchar = 0;
+    char strbuf[32];
+    if (len == -1)
+        len = strlen((const char *)in);
+    if (!mask)
+        mask = DIRSTRING_TYPE;
+
+    int (*decode_func)(CBS *, uint32_t*);
+    int error;
+    switch (inform) {
+    case MBSTRING_BMP:
+        decode_func = cbs_get_ucs2_be;
+        error = ASN1_R_INVALID_BMPSTRING;
+        break;
+
+    case MBSTRING_UNIV:
+        decode_func = cbs_get_utf32_be;
+        error = ASN1_R_INVALID_UNIVERSALSTRING;
+        break;
+
+    case MBSTRING_UTF8:
+        decode_func = cbs_get_utf8;
+        error = ASN1_R_INVALID_UTF8STRING;
+        break;
+
+    case MBSTRING_ASC:
+        decode_func = cbs_get_latin1;
+        error = ERR_R_INTERNAL_ERROR;  // Latin-1 inputs are never invalid.
+        break;
+
+    default:
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+        return -1;
+    }
+
+    /* Check |minsize| and |maxsize| and work out the minimal type, if any. */
+    CBS cbs;
+    CBS_init(&cbs, in, len);
+    size_t utf8_len = 0;
+    while (CBS_len(&cbs) != 0) {
+        uint32_t c;
+        if (!decode_func(&cbs, &c)) {
+            OPENSSL_PUT_ERROR(ASN1, error);
+            return -1;
+        }
+        if (nchar == 0 &&
+            (inform == MBSTRING_BMP || inform == MBSTRING_UNIV) &&
+            c == 0xfeff) {
+            /* Reject byte-order mark. We could drop it but that would mean
+             * adding ambiguity around whether a BOM was included or not when
+             * matching strings.
+             *
+             * For a little-endian UCS-2 string, the BOM will appear as 0xfffe
+             * and will be rejected as noncharacter, below. */
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_CHARACTERS);
+            return -1;
+        }
+
+        /* Update which output formats are still possible. */
+        if ((mask & B_ASN1_PRINTABLESTRING) && !is_printable(c)) {
+            mask &= ~B_ASN1_PRINTABLESTRING;
+        }
+        if ((mask & B_ASN1_IA5STRING) && (c > 127)) {
+            mask &= ~B_ASN1_IA5STRING;
+        }
+        if ((mask & B_ASN1_T61STRING) && (c > 0xff)) {
+            mask &= ~B_ASN1_T61STRING;
+        }
+        if ((mask & B_ASN1_BMPSTRING) && (c > 0xffff)) {
+            mask &= ~B_ASN1_BMPSTRING;
+        }
+        if (!mask) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_CHARACTERS);
+            return -1;
+        }
+
+        nchar++;
+        utf8_len += cbb_get_utf8_len(c);
+    }
+
+    if (minsize > 0 && nchar < (size_t)minsize) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_SHORT);
+        BIO_snprintf(strbuf, sizeof strbuf, "%ld", minsize);
+        ERR_add_error_data(2, "minsize=", strbuf);
+        return -1;
+    }
+
+    if (maxsize > 0 && nchar > (size_t)maxsize) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_LONG);
+        BIO_snprintf(strbuf, sizeof strbuf, "%ld", maxsize);
+        ERR_add_error_data(2, "maxsize=", strbuf);
+        return -1;
+    }
+
+    /* Now work out output format and string type */
+    int (*encode_func)(CBB *, uint32_t) = cbb_add_latin1;
+    size_t size_estimate = nchar;
+    int outform = MBSTRING_ASC;
+    if (mask & B_ASN1_PRINTABLESTRING) {
+        str_type = V_ASN1_PRINTABLESTRING;
+    } else if (mask & B_ASN1_IA5STRING) {
+        str_type = V_ASN1_IA5STRING;
+    } else if (mask & B_ASN1_T61STRING) {
+        str_type = V_ASN1_T61STRING;
+    } else if (mask & B_ASN1_BMPSTRING) {
+        str_type = V_ASN1_BMPSTRING;
+        outform = MBSTRING_BMP;
+        encode_func = cbb_add_ucs2_be;
+        size_estimate = 2 * nchar;
+    } else if (mask & B_ASN1_UNIVERSALSTRING) {
+        str_type = V_ASN1_UNIVERSALSTRING;
+        encode_func = cbb_add_utf32_be;
+        size_estimate = 4 * nchar;
+        outform = MBSTRING_UNIV;
+    } else {
+        str_type = V_ASN1_UTF8STRING;
+        outform = MBSTRING_UTF8;
+        encode_func = cbb_add_utf8;
+        size_estimate = utf8_len;
+    }
+
+    if (!out)
+        return str_type;
+    if (*out) {
+        free_out = 0;
+        dest = *out;
+        if (dest->data) {
+            dest->length = 0;
+            OPENSSL_free(dest->data);
+            dest->data = NULL;
+        }
+        dest->type = str_type;
+    } else {
+        free_out = 1;
+        dest = ASN1_STRING_type_new(str_type);
+        if (!dest) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return -1;
+        }
+        *out = dest;
+    }
+
+    /* If both the same type just copy across */
+    if (inform == outform) {
+        if (!ASN1_STRING_set(dest, in, len)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return -1;
+        }
+        return str_type;
+    }
+
+    CBB cbb;
+    if (!CBB_init(&cbb, size_estimate + 1)) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    CBS_init(&cbs, in, len);
+    while (CBS_len(&cbs) != 0) {
+        uint32_t c;
+        if (!decode_func(&cbs, &c) ||
+            !encode_func(&cbb, c)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
+    }
+    uint8_t *data = NULL;
+    size_t data_len;
+    if (/* OpenSSL historically NUL-terminated this value with a single byte,
+         * even for |MBSTRING_BMP| and |MBSTRING_UNIV|. */
+        !CBB_add_u8(&cbb, 0) ||
+        !CBB_finish(&cbb, &data, &data_len) ||
+        data_len < 1 ||
+        data_len > INT_MAX) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_INTERNAL_ERROR);
+        OPENSSL_free(data);
+        goto err;
+    }
+    dest->length = (int)(data_len - 1);
+    dest->data = data;
+    return str_type;
+
+ err:
+    if (free_out)
+        ASN1_STRING_free(dest);
+    CBB_cleanup(&cbb);
+    return -1;
+}
+
+/* Return 1 if the character is permitted in a PrintableString */
+static int is_printable(uint32_t value)
+{
+    int ch;
+    if (value > 0x7f)
+        return 0;
+    ch = (int)value;
+    /*
+     * Note: we can't use 'isalnum' because certain accented characters may
+     * count as alphanumeric in some environments.
+     */
+    if ((ch >= 'a') && (ch <= 'z'))
+        return 1;
+    if ((ch >= 'A') && (ch <= 'Z'))
+        return 1;
+    if ((ch >= '0') && (ch <= '9'))
+        return 1;
+    if ((ch == ' ') || strchr("'()+,-./:=?", ch))
+        return 1;
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c
new file mode 100644
index 0000000..3a21f91
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c	
@@ -0,0 +1,286 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+
+#include "../internal.h"
+
+
+int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
+{
+    unsigned char *p, *allocated = NULL;
+    int objsize;
+
+    if ((a == NULL) || (a->data == NULL))
+        return (0);
+
+    objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
+    if (pp == NULL || objsize == -1)
+        return objsize;
+
+    if (*pp == NULL) {
+        if ((p = allocated = OPENSSL_malloc(objsize)) == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+    } else {
+        p = *pp;
+    }
+
+    ASN1_put_object(&p, 0, a->length, V_ASN1_OBJECT, V_ASN1_UNIVERSAL);
+    OPENSSL_memcpy(p, a->data, a->length);
+
+    /*
+     * If a new buffer was allocated, just return it back.
+     * If not, return the incremented buffer pointer.
+     */
+    *pp = allocated != NULL ? allocated : p + a->length;
+    return objsize;
+}
+
+int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
+{
+    return OBJ_obj2txt(buf, buf_len, a, 0);
+}
+
+int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
+{
+    char buf[80], *p = buf;
+    int i;
+
+    if ((a == NULL) || (a->data == NULL))
+        return (BIO_write(bp, "NULL", 4));
+    i = i2t_ASN1_OBJECT(buf, sizeof buf, a);
+    if (i > (int)(sizeof(buf) - 1)) {
+        p = OPENSSL_malloc(i + 1);
+        if (!p)
+            return -1;
+        i2t_ASN1_OBJECT(p, i + 1, a);
+    }
+    if (i <= 0)
+        return BIO_write(bp, "<INVALID>", 9);
+    BIO_write(bp, p, i);
+    if (p != buf)
+        OPENSSL_free(p);
+    return (i);
+}
+
+ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+                             long length)
+{
+    const unsigned char *p;
+    long len;
+    int tag, xclass;
+    int inf, i;
+    ASN1_OBJECT *ret = NULL;
+    p = *pp;
+    inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
+    if (inf & 0x80) {
+        i = ASN1_R_BAD_OBJECT_HEADER;
+        goto err;
+    }
+
+    if (tag != V_ASN1_OBJECT) {
+        i = ASN1_R_EXPECTING_AN_OBJECT;
+        goto err;
+    }
+    ret = c2i_ASN1_OBJECT(a, &p, len);
+    if (ret)
+        *pp = p;
+    return ret;
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    return (NULL);
+}
+
+ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+                             long len)
+{
+    ASN1_OBJECT *ret = NULL;
+    const unsigned char *p;
+    unsigned char *data;
+    int i, length;
+
+    /*
+     * Sanity check OID encoding. Need at least one content octet. MSB must
+     * be clear in the last octet. can't have leading 0x80 in subidentifiers,
+     * see: X.690 8.19.2
+     */
+    if (len <= 0 || len > INT_MAX || pp == NULL || (p = *pp) == NULL ||
+        p[len - 1] & 0x80) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
+        return NULL;
+    }
+    /* Now 0 < len <= INT_MAX, so the cast is safe. */
+    length = (int)len;
+    for (i = 0; i < length; i++, p++) {
+        if (*p == 0x80 && (!i || !(p[-1] & 0x80))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
+            return NULL;
+        }
+    }
+
+    /*
+     * only the ASN1_OBJECTs from the 'table' will have values for ->sn or
+     * ->ln
+     */
+    if ((a == NULL) || ((*a) == NULL) ||
+        !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
+        if ((ret = ASN1_OBJECT_new()) == NULL)
+            return (NULL);
+    } else
+        ret = (*a);
+
+    p = *pp;
+    /* detach data from object */
+    data = (unsigned char *)ret->data;
+    ret->data = NULL;
+    /* once detached we can change it */
+    if ((data == NULL) || (ret->length < length)) {
+        ret->length = 0;
+        if (data != NULL)
+            OPENSSL_free(data);
+        data = (unsigned char *)OPENSSL_malloc(length);
+        if (data == NULL) {
+            i = ERR_R_MALLOC_FAILURE;
+            goto err;
+        }
+        ret->flags |= ASN1_OBJECT_FLAG_DYNAMIC_DATA;
+    }
+    OPENSSL_memcpy(data, p, length);
+    /* reattach data to object, after which it remains const */
+    ret->data = data;
+    ret->length = length;
+    ret->sn = NULL;
+    ret->ln = NULL;
+    /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
+    p += length;
+
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        ASN1_OBJECT_free(ret);
+    return (NULL);
+}
+
+ASN1_OBJECT *ASN1_OBJECT_new(void)
+{
+    ASN1_OBJECT *ret;
+
+    ret = (ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    ret->length = 0;
+    ret->data = NULL;
+    ret->nid = 0;
+    ret->sn = NULL;
+    ret->ln = NULL;
+    ret->flags = ASN1_OBJECT_FLAG_DYNAMIC;
+    return (ret);
+}
+
+void ASN1_OBJECT_free(ASN1_OBJECT *a)
+{
+    if (a == NULL)
+        return;
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) {
+#ifndef CONST_STRICT            /* disable purely for compile-time strict
+                                 * const checking. Doing this on a "real"
+                                 * compile will cause memory leaks */
+        if (a->sn != NULL)
+            OPENSSL_free((void *)a->sn);
+        if (a->ln != NULL)
+            OPENSSL_free((void *)a->ln);
+#endif
+        a->sn = a->ln = NULL;
+    }
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) {
+        if (a->data != NULL)
+            OPENSSL_free((void *)a->data);
+        a->data = NULL;
+        a->length = 0;
+    }
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
+        OPENSSL_free(a);
+}
+
+ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
+                                const char *sn, const char *ln)
+{
+    ASN1_OBJECT o;
+
+    o.sn = sn;
+    o.ln = ln;
+    o.data = data;
+    o.nid = nid;
+    o.length = len;
+    o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+        ASN1_OBJECT_FLAG_DYNAMIC_DATA;
+    return (OBJ_dup(&o));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c.grpc_back
new file mode 100644
index 0000000..97335bf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_object.c.grpc_back	
@@ -0,0 +1,286 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+#include "../internal.h"
+
+
+int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
+{
+    unsigned char *p, *allocated = NULL;
+    int objsize;
+
+    if ((a == NULL) || (a->data == NULL))
+        return (0);
+
+    objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
+    if (pp == NULL || objsize == -1)
+        return objsize;
+
+    if (*pp == NULL) {
+        if ((p = allocated = OPENSSL_malloc(objsize)) == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+    } else {
+        p = *pp;
+    }
+
+    ASN1_put_object(&p, 0, a->length, V_ASN1_OBJECT, V_ASN1_UNIVERSAL);
+    OPENSSL_memcpy(p, a->data, a->length);
+
+    /*
+     * If a new buffer was allocated, just return it back.
+     * If not, return the incremented buffer pointer.
+     */
+    *pp = allocated != NULL ? allocated : p + a->length;
+    return objsize;
+}
+
+int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
+{
+    return OBJ_obj2txt(buf, buf_len, a, 0);
+}
+
+int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
+{
+    char buf[80], *p = buf;
+    int i;
+
+    if ((a == NULL) || (a->data == NULL))
+        return (BIO_write(bp, "NULL", 4));
+    i = i2t_ASN1_OBJECT(buf, sizeof buf, a);
+    if (i > (int)(sizeof(buf) - 1)) {
+        p = OPENSSL_malloc(i + 1);
+        if (!p)
+            return -1;
+        i2t_ASN1_OBJECT(p, i + 1, a);
+    }
+    if (i <= 0)
+        return BIO_write(bp, "<INVALID>", 9);
+    BIO_write(bp, p, i);
+    if (p != buf)
+        OPENSSL_free(p);
+    return (i);
+}
+
+ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+                             long length)
+{
+    const unsigned char *p;
+    long len;
+    int tag, xclass;
+    int inf, i;
+    ASN1_OBJECT *ret = NULL;
+    p = *pp;
+    inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
+    if (inf & 0x80) {
+        i = ASN1_R_BAD_OBJECT_HEADER;
+        goto err;
+    }
+
+    if (tag != V_ASN1_OBJECT) {
+        i = ASN1_R_EXPECTING_AN_OBJECT;
+        goto err;
+    }
+    ret = c2i_ASN1_OBJECT(a, &p, len);
+    if (ret)
+        *pp = p;
+    return ret;
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    return (NULL);
+}
+
+ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+                             long len)
+{
+    ASN1_OBJECT *ret = NULL;
+    const unsigned char *p;
+    unsigned char *data;
+    int i, length;
+
+    /*
+     * Sanity check OID encoding. Need at least one content octet. MSB must
+     * be clear in the last octet. can't have leading 0x80 in subidentifiers,
+     * see: X.690 8.19.2
+     */
+    if (len <= 0 || len > INT_MAX || pp == NULL || (p = *pp) == NULL ||
+        p[len - 1] & 0x80) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
+        return NULL;
+    }
+    /* Now 0 < len <= INT_MAX, so the cast is safe. */
+    length = (int)len;
+    for (i = 0; i < length; i++, p++) {
+        if (*p == 0x80 && (!i || !(p[-1] & 0x80))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
+            return NULL;
+        }
+    }
+
+    /*
+     * only the ASN1_OBJECTs from the 'table' will have values for ->sn or
+     * ->ln
+     */
+    if ((a == NULL) || ((*a) == NULL) ||
+        !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
+        if ((ret = ASN1_OBJECT_new()) == NULL)
+            return (NULL);
+    } else
+        ret = (*a);
+
+    p = *pp;
+    /* detach data from object */
+    data = (unsigned char *)ret->data;
+    ret->data = NULL;
+    /* once detached we can change it */
+    if ((data == NULL) || (ret->length < length)) {
+        ret->length = 0;
+        if (data != NULL)
+            OPENSSL_free(data);
+        data = (unsigned char *)OPENSSL_malloc(length);
+        if (data == NULL) {
+            i = ERR_R_MALLOC_FAILURE;
+            goto err;
+        }
+        ret->flags |= ASN1_OBJECT_FLAG_DYNAMIC_DATA;
+    }
+    OPENSSL_memcpy(data, p, length);
+    /* reattach data to object, after which it remains const */
+    ret->data = data;
+    ret->length = length;
+    ret->sn = NULL;
+    ret->ln = NULL;
+    /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
+    p += length;
+
+    if (a != NULL)
+        (*a) = ret;
+    *pp = p;
+    return (ret);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, i);
+    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+        ASN1_OBJECT_free(ret);
+    return (NULL);
+}
+
+ASN1_OBJECT *ASN1_OBJECT_new(void)
+{
+    ASN1_OBJECT *ret;
+
+    ret = (ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    ret->length = 0;
+    ret->data = NULL;
+    ret->nid = 0;
+    ret->sn = NULL;
+    ret->ln = NULL;
+    ret->flags = ASN1_OBJECT_FLAG_DYNAMIC;
+    return (ret);
+}
+
+void ASN1_OBJECT_free(ASN1_OBJECT *a)
+{
+    if (a == NULL)
+        return;
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) {
+#ifndef CONST_STRICT            /* disable purely for compile-time strict
+                                 * const checking. Doing this on a "real"
+                                 * compile will cause memory leaks */
+        if (a->sn != NULL)
+            OPENSSL_free((void *)a->sn);
+        if (a->ln != NULL)
+            OPENSSL_free((void *)a->ln);
+#endif
+        a->sn = a->ln = NULL;
+    }
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) {
+        if (a->data != NULL)
+            OPENSSL_free((void *)a->data);
+        a->data = NULL;
+        a->length = 0;
+    }
+    if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
+        OPENSSL_free(a);
+}
+
+ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
+                                const char *sn, const char *ln)
+{
+    ASN1_OBJECT o;
+
+    o.sn = sn;
+    o.ln = ln;
+    o.data = data;
+    o.nid = nid;
+    o.length = len;
+    o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+        ASN1_OBJECT_FLAG_DYNAMIC_DATA;
+    return (OBJ_dup(&o));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c
new file mode 100644
index 0000000..c3f9212
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c	
@@ -0,0 +1,77 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+ASN1_OCTET_STRING *ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *x)
+{
+    return M_ASN1_OCTET_STRING_dup(x);
+}
+
+int ASN1_OCTET_STRING_cmp(const ASN1_OCTET_STRING *a,
+                          const ASN1_OCTET_STRING *b)
+{
+    return M_ASN1_OCTET_STRING_cmp(a, b);
+}
+
+int ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *x, const unsigned char *d,
+                          int len)
+{
+    return M_ASN1_OCTET_STRING_set(x, d, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c.grpc_back
new file mode 100644
index 0000000..2e74d6b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_octet.c.grpc_back	
@@ -0,0 +1,77 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+ASN1_OCTET_STRING *ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *x)
+{
+    return M_ASN1_OCTET_STRING_dup(x);
+}
+
+int ASN1_OCTET_STRING_cmp(const ASN1_OCTET_STRING *a,
+                          const ASN1_OCTET_STRING *b)
+{
+    return M_ASN1_OCTET_STRING_cmp(a, b);
+}
+
+int ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *x, const unsigned char *d,
+                          int len)
+{
+    return M_ASN1_OCTET_STRING_set(x, d, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c
new file mode 100644
index 0000000..d2532f6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+int ASN1_PRINTABLE_type(const unsigned char *s, int len)
+{
+    int c;
+    int ia5 = 0;
+    int t61 = 0;
+
+    if (len <= 0)
+        len = -1;
+    if (s == NULL)
+        return (V_ASN1_PRINTABLESTRING);
+
+    while ((*s) && (len-- != 0)) {
+        c = *(s++);
+        if (!(((c >= 'a') && (c <= 'z')) ||
+              ((c >= 'A') && (c <= 'Z')) ||
+              (c == ' ') ||
+              ((c >= '0') && (c <= '9')) ||
+              (c == ' ') || (c == '\'') ||
+              (c == '(') || (c == ')') ||
+              (c == '+') || (c == ',') ||
+              (c == '-') || (c == '.') ||
+              (c == '/') || (c == ':') || (c == '=') || (c == '?')))
+            ia5 = 1;
+        if (c & 0x80)
+            t61 = 1;
+    }
+    if (t61)
+        return (V_ASN1_T61STRING);
+    if (ia5)
+        return (V_ASN1_IA5STRING);
+    return (V_ASN1_PRINTABLESTRING);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c.grpc_back
new file mode 100644
index 0000000..2104521
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_print.c.grpc_back	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+int ASN1_PRINTABLE_type(const unsigned char *s, int len)
+{
+    int c;
+    int ia5 = 0;
+    int t61 = 0;
+
+    if (len <= 0)
+        len = -1;
+    if (s == NULL)
+        return (V_ASN1_PRINTABLESTRING);
+
+    while ((*s) && (len-- != 0)) {
+        c = *(s++);
+        if (!(((c >= 'a') && (c <= 'z')) ||
+              ((c >= 'A') && (c <= 'Z')) ||
+              (c == ' ') ||
+              ((c >= '0') && (c <= '9')) ||
+              (c == ' ') || (c == '\'') ||
+              (c == '(') || (c == ')') ||
+              (c == '+') || (c == ',') ||
+              (c == '-') || (c == '.') ||
+              (c == '/') || (c == ':') || (c == '=') || (c == '?')))
+            ia5 = 1;
+        if (c & 0x80)
+            t61 = 1;
+    }
+    if (t61)
+        return (V_ASN1_T61STRING);
+    if (ia5)
+        return (V_ASN1_IA5STRING);
+    return (V_ASN1_PRINTABLESTRING);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c
new file mode 100644
index 0000000..f294311
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c	
@@ -0,0 +1,313 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <stdlib.h>             /* For bsearch */
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+
+DEFINE_STACK_OF(ASN1_STRING_TABLE)
+
+static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
+static void st_free(ASN1_STRING_TABLE *tbl);
+
+/*
+ * This is the global mask for the mbstring functions: this is use to mask
+ * out certain types (such as BMPString and UTF8String) because certain
+ * software (e.g. Netscape) has problems with them.
+ */
+
+static unsigned long global_mask = B_ASN1_UTF8STRING;
+
+void ASN1_STRING_set_default_mask(unsigned long mask)
+{
+    global_mask = mask;
+}
+
+unsigned long ASN1_STRING_get_default_mask(void)
+{
+    return global_mask;
+}
+
+/*
+ * This function sets the default to various "flavours" of configuration.
+ * based on an ASCII string. Currently this is: MASK:XXXX : a numerical mask
+ * value. nobmp : Don't use BMPStrings (just Printable, T61). pkix : PKIX
+ * recommendation in RFC2459. utf8only : only use UTF8Strings (RFC2459
+ * recommendation for 2004). default: the default value, Printable, T61, BMP.
+ */
+
+int ASN1_STRING_set_default_mask_asc(const char *p)
+{
+    unsigned long mask;
+    char *end;
+    if (!strncmp(p, "MASK:", 5)) {
+        if (!p[5])
+            return 0;
+        mask = strtoul(p + 5, &end, 0);
+        if (*end)
+            return 0;
+    } else if (!strcmp(p, "nombstr"))
+        mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
+    else if (!strcmp(p, "pkix"))
+        mask = ~((unsigned long)B_ASN1_T61STRING);
+    else if (!strcmp(p, "utf8only"))
+        mask = B_ASN1_UTF8STRING;
+    else if (!strcmp(p, "default"))
+        mask = 0xFFFFFFFFL;
+    else
+        return 0;
+    ASN1_STRING_set_default_mask(mask);
+    return 1;
+}
+
+/*
+ * The following function generates an ASN1_STRING based on limits in a
+ * table. Frequently the types and length of an ASN1_STRING are restricted by
+ * a corresponding OID. For example certificates and certificate requests.
+ */
+
+ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
+                                    const unsigned char *in, int inlen,
+                                    int inform, int nid)
+{
+    ASN1_STRING_TABLE *tbl;
+    ASN1_STRING *str = NULL;
+    unsigned long mask;
+    int ret;
+    if (!out)
+        out = &str;
+    tbl = ASN1_STRING_TABLE_get(nid);
+    if (tbl) {
+        mask = tbl->mask;
+        if (!(tbl->flags & STABLE_NO_MASK))
+            mask &= global_mask;
+        ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
+                                  tbl->minsize, tbl->maxsize);
+    } else
+        ret =
+            ASN1_mbstring_copy(out, in, inlen, inform,
+                               DIRSTRING_TYPE & global_mask);
+    if (ret <= 0)
+        return NULL;
+    return *out;
+}
+
+/*
+ * Now the tables and helper functions for the string table:
+ */
+
+/* size limits: this stuff is taken straight from RFC3280 */
+
+#define ub_name                         32768
+#define ub_common_name                  64
+#define ub_locality_name                128
+#define ub_state_name                   128
+#define ub_organization_name            64
+#define ub_organization_unit_name       64
+#define ub_title                        64
+#define ub_email_address                128
+#define ub_serial_number                64
+
+/* This table must be kept in NID order */
+
+static const ASN1_STRING_TABLE tbl_standard[] = {
+    {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
+    {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
+    {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
+    {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
+    {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
+    {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE,
+     0},
+    {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING,
+     STABLE_NO_MASK},
+    {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
+    {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
+    {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
+    {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING,
+     STABLE_NO_MASK},
+    {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
+    {NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
+    {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
+    {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}
+};
+
+static int sk_table_cmp(const ASN1_STRING_TABLE **a,
+                        const ASN1_STRING_TABLE **b)
+{
+    return (*a)->nid - (*b)->nid;
+}
+
+static int table_cmp(const void *in_a, const void *in_b)
+{
+    const ASN1_STRING_TABLE *a = in_a;
+    const ASN1_STRING_TABLE *b = in_b;
+    return a->nid - b->nid;
+}
+
+ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
+{
+    int found;
+    size_t idx;
+    ASN1_STRING_TABLE *ttmp;
+    ASN1_STRING_TABLE fnd;
+    fnd.nid = nid;
+
+    ttmp =
+        bsearch(&fnd, tbl_standard,
+                sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE),
+                sizeof(ASN1_STRING_TABLE), table_cmp);
+    if (ttmp)
+        return ttmp;
+    if (!stable)
+        return NULL;
+    sk_ASN1_STRING_TABLE_sort(stable);
+    found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd);
+    if (!found)
+        return NULL;
+    return sk_ASN1_STRING_TABLE_value(stable, idx);
+}
+
+int ASN1_STRING_TABLE_add(int nid,
+                          long minsize, long maxsize, unsigned long mask,
+                          unsigned long flags)
+{
+    ASN1_STRING_TABLE *tmp;
+    char new_nid = 0;
+    flags &= ~STABLE_FLAGS_MALLOC;
+    if (!stable)
+        stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
+    if (!stable) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
+        tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE));
+        if (!tmp) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        tmp->flags = flags | STABLE_FLAGS_MALLOC;
+        tmp->nid = nid;
+        tmp->minsize = tmp->maxsize = -1;
+        new_nid = 1;
+    } else
+        tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
+    if (minsize != -1)
+        tmp->minsize = minsize;
+    if (maxsize != -1)
+        tmp->maxsize = maxsize;
+    tmp->mask = mask;
+    if (new_nid)
+        sk_ASN1_STRING_TABLE_push(stable, tmp);
+    return 1;
+}
+
+void ASN1_STRING_TABLE_cleanup(void)
+{
+    STACK_OF(ASN1_STRING_TABLE) *tmp;
+    tmp = stable;
+    if (!tmp)
+        return;
+    stable = NULL;
+    sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
+}
+
+static void st_free(ASN1_STRING_TABLE *tbl)
+{
+    if (tbl->flags & STABLE_FLAGS_MALLOC)
+        OPENSSL_free(tbl);
+}
+
+#ifdef STRING_TABLE_TEST
+
+int main(void)
+{
+    ASN1_STRING_TABLE *tmp;
+    int i, last_nid = -1;
+
+    for (tmp = tbl_standard, i = 0;
+         i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++) {
+        if (tmp->nid < last_nid) {
+            last_nid = 0;
+            break;
+        }
+        last_nid = tmp->nid;
+    }
+
+    if (last_nid != 0) {
+        printf("Table order OK\n");
+        exit(0);
+    }
+
+    for (tmp = tbl_standard, i = 0;
+         i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++)
+        printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
+               OBJ_nid2ln(tmp->nid));
+
+    return 0;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c.grpc_back
new file mode 100644
index 0000000..efbf0fa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_strnid.c.grpc_back	
@@ -0,0 +1,313 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <stdlib.h>             /* For bsearch */
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+
+DEFINE_STACK_OF(ASN1_STRING_TABLE)
+
+static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
+static void st_free(ASN1_STRING_TABLE *tbl);
+
+/*
+ * This is the global mask for the mbstring functions: this is use to mask
+ * out certain types (such as BMPString and UTF8String) because certain
+ * software (e.g. Netscape) has problems with them.
+ */
+
+static unsigned long global_mask = B_ASN1_UTF8STRING;
+
+void ASN1_STRING_set_default_mask(unsigned long mask)
+{
+    global_mask = mask;
+}
+
+unsigned long ASN1_STRING_get_default_mask(void)
+{
+    return global_mask;
+}
+
+/*
+ * This function sets the default to various "flavours" of configuration.
+ * based on an ASCII string. Currently this is: MASK:XXXX : a numerical mask
+ * value. nobmp : Don't use BMPStrings (just Printable, T61). pkix : PKIX
+ * recommendation in RFC2459. utf8only : only use UTF8Strings (RFC2459
+ * recommendation for 2004). default: the default value, Printable, T61, BMP.
+ */
+
+int ASN1_STRING_set_default_mask_asc(const char *p)
+{
+    unsigned long mask;
+    char *end;
+    if (!strncmp(p, "MASK:", 5)) {
+        if (!p[5])
+            return 0;
+        mask = strtoul(p + 5, &end, 0);
+        if (*end)
+            return 0;
+    } else if (!strcmp(p, "nombstr"))
+        mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
+    else if (!strcmp(p, "pkix"))
+        mask = ~((unsigned long)B_ASN1_T61STRING);
+    else if (!strcmp(p, "utf8only"))
+        mask = B_ASN1_UTF8STRING;
+    else if (!strcmp(p, "default"))
+        mask = 0xFFFFFFFFL;
+    else
+        return 0;
+    ASN1_STRING_set_default_mask(mask);
+    return 1;
+}
+
+/*
+ * The following function generates an ASN1_STRING based on limits in a
+ * table. Frequently the types and length of an ASN1_STRING are restricted by
+ * a corresponding OID. For example certificates and certificate requests.
+ */
+
+ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
+                                    const unsigned char *in, int inlen,
+                                    int inform, int nid)
+{
+    ASN1_STRING_TABLE *tbl;
+    ASN1_STRING *str = NULL;
+    unsigned long mask;
+    int ret;
+    if (!out)
+        out = &str;
+    tbl = ASN1_STRING_TABLE_get(nid);
+    if (tbl) {
+        mask = tbl->mask;
+        if (!(tbl->flags & STABLE_NO_MASK))
+            mask &= global_mask;
+        ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
+                                  tbl->minsize, tbl->maxsize);
+    } else
+        ret =
+            ASN1_mbstring_copy(out, in, inlen, inform,
+                               DIRSTRING_TYPE & global_mask);
+    if (ret <= 0)
+        return NULL;
+    return *out;
+}
+
+/*
+ * Now the tables and helper functions for the string table:
+ */
+
+/* size limits: this stuff is taken straight from RFC3280 */
+
+#define ub_name                         32768
+#define ub_common_name                  64
+#define ub_locality_name                128
+#define ub_state_name                   128
+#define ub_organization_name            64
+#define ub_organization_unit_name       64
+#define ub_title                        64
+#define ub_email_address                128
+#define ub_serial_number                64
+
+/* This table must be kept in NID order */
+
+static const ASN1_STRING_TABLE tbl_standard[] = {
+    {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
+    {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
+    {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
+    {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
+    {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
+    {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE,
+     0},
+    {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING,
+     STABLE_NO_MASK},
+    {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
+    {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
+    {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
+    {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING,
+     STABLE_NO_MASK},
+    {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
+    {NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
+    {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
+    {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
+    {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}
+};
+
+static int sk_table_cmp(const ASN1_STRING_TABLE **a,
+                        const ASN1_STRING_TABLE **b)
+{
+    return (*a)->nid - (*b)->nid;
+}
+
+static int table_cmp(const void *in_a, const void *in_b)
+{
+    const ASN1_STRING_TABLE *a = in_a;
+    const ASN1_STRING_TABLE *b = in_b;
+    return a->nid - b->nid;
+}
+
+ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
+{
+    int found;
+    size_t idx;
+    ASN1_STRING_TABLE *ttmp;
+    ASN1_STRING_TABLE fnd;
+    fnd.nid = nid;
+
+    ttmp =
+        bsearch(&fnd, tbl_standard,
+                sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE),
+                sizeof(ASN1_STRING_TABLE), table_cmp);
+    if (ttmp)
+        return ttmp;
+    if (!stable)
+        return NULL;
+    sk_ASN1_STRING_TABLE_sort(stable);
+    found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd);
+    if (!found)
+        return NULL;
+    return sk_ASN1_STRING_TABLE_value(stable, idx);
+}
+
+int ASN1_STRING_TABLE_add(int nid,
+                          long minsize, long maxsize, unsigned long mask,
+                          unsigned long flags)
+{
+    ASN1_STRING_TABLE *tmp;
+    char new_nid = 0;
+    flags &= ~STABLE_FLAGS_MALLOC;
+    if (!stable)
+        stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
+    if (!stable) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
+        tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE));
+        if (!tmp) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        tmp->flags = flags | STABLE_FLAGS_MALLOC;
+        tmp->nid = nid;
+        tmp->minsize = tmp->maxsize = -1;
+        new_nid = 1;
+    } else
+        tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
+    if (minsize != -1)
+        tmp->minsize = minsize;
+    if (maxsize != -1)
+        tmp->maxsize = maxsize;
+    tmp->mask = mask;
+    if (new_nid)
+        sk_ASN1_STRING_TABLE_push(stable, tmp);
+    return 1;
+}
+
+void ASN1_STRING_TABLE_cleanup(void)
+{
+    STACK_OF(ASN1_STRING_TABLE) *tmp;
+    tmp = stable;
+    if (!tmp)
+        return;
+    stable = NULL;
+    sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
+}
+
+static void st_free(ASN1_STRING_TABLE *tbl)
+{
+    if (tbl->flags & STABLE_FLAGS_MALLOC)
+        OPENSSL_free(tbl);
+}
+
+#ifdef STRING_TABLE_TEST
+
+int main(void)
+{
+    ASN1_STRING_TABLE *tmp;
+    int i, last_nid = -1;
+
+    for (tmp = tbl_standard, i = 0;
+         i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++) {
+        if (tmp->nid < last_nid) {
+            last_nid = 0;
+            break;
+        }
+        last_nid = tmp->nid;
+    }
+
+    if (last_nid != 0) {
+        printf("Table order OK\n");
+        exit(0);
+    }
+
+    for (tmp = tbl_standard, i = 0;
+         i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++)
+        printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
+               OBJ_nid2ln(tmp->nid));
+
+    return 0;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c
new file mode 100644
index 0000000..e74c2fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c	
@@ -0,0 +1,212 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+
+/*
+ * This is an implementation of the ASN1 Time structure which is: Time ::=
+ * CHOICE { utcTime UTCTime, generalTime GeneralizedTime } written by Steve
+ * Henson.
+ */
+
+IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
+
+IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
+
+ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
+{
+    return ASN1_TIME_adj(s, t, 0, 0);
+}
+
+ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
+                         int offset_day, long offset_sec)
+{
+    struct tm *ts;
+    struct tm data;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ERROR_GETTING_TIME);
+        return NULL;
+    }
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            return NULL;
+    }
+    if ((ts->tm_year >= 50) && (ts->tm_year < 150))
+        return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
+    return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
+}
+
+int ASN1_TIME_check(ASN1_TIME *t)
+{
+    if (t->type == V_ASN1_GENERALIZEDTIME)
+        return ASN1_GENERALIZEDTIME_check(t);
+    else if (t->type == V_ASN1_UTCTIME)
+        return ASN1_UTCTIME_check(t);
+    return 0;
+}
+
+/* Convert an ASN1_TIME structure to GeneralizedTime */
+ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t,
+                                                   ASN1_GENERALIZEDTIME **out)
+{
+    ASN1_GENERALIZEDTIME *ret = NULL;
+    char *str;
+    int newlen;
+
+    if (!ASN1_TIME_check(t))
+        return NULL;
+
+    if (!out || !*out) {
+        if (!(ret = ASN1_GENERALIZEDTIME_new()))
+            goto err;
+    } else {
+        ret = *out;
+    }
+
+    /* If already GeneralizedTime just copy across */
+    if (t->type == V_ASN1_GENERALIZEDTIME) {
+        if (!ASN1_STRING_set(ret, t->data, t->length))
+            goto err;
+        goto done;
+    }
+
+    /* grow the string */
+    if (!ASN1_STRING_set(ret, NULL, t->length + 2))
+        goto err;
+    /* ASN1_STRING_set() allocated 'len + 1' bytes. */
+    newlen = t->length + 2 + 1;
+    str = (char *)ret->data;
+    /* Work out the century and prepend */
+    if (t->data[0] >= '5')
+        OPENSSL_strlcpy(str, "19", newlen);
+    else
+        OPENSSL_strlcpy(str, "20", newlen);
+
+    OPENSSL_strlcat(str, (char *)t->data, newlen);
+
+ done:
+   if (out != NULL && *out == NULL)
+       *out = ret;
+   return ret;
+
+ err:
+    if (out == NULL || *out != ret)
+        ASN1_GENERALIZEDTIME_free(ret);
+    return NULL;
+}
+
+
+int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
+{
+    ASN1_TIME t;
+
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    t.flags = 0;
+
+    t.type = V_ASN1_UTCTIME;
+
+    if (!ASN1_TIME_check(&t)) {
+        t.type = V_ASN1_GENERALIZEDTIME;
+        if (!ASN1_TIME_check(&t))
+            return 0;
+    }
+
+    if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
+        return 0;
+
+    return 1;
+}
+
+static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
+{
+    if (t == NULL) {
+        time_t now_t;
+        time(&now_t);
+        if (OPENSSL_gmtime(&now_t, tm))
+            return 1;
+        return 0;
+    }
+
+    if (t->type == V_ASN1_UTCTIME)
+        return asn1_utctime_to_tm(tm, t);
+    else if (t->type == V_ASN1_GENERALIZEDTIME)
+        return asn1_generalizedtime_to_tm(tm, t);
+
+    return 0;
+}
+
+int ASN1_TIME_diff(int *pday, int *psec,
+                   const ASN1_TIME *from, const ASN1_TIME *to)
+{
+    struct tm tm_from, tm_to;
+    if (!asn1_time_to_tm(&tm_from, from))
+        return 0;
+    if (!asn1_time_to_tm(&tm_to, to))
+        return 0;
+    return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c.grpc_back
new file mode 100644
index 0000000..51aae5d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_time.c.grpc_back	
@@ -0,0 +1,212 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+
+/*
+ * This is an implementation of the ASN1 Time structure which is: Time ::=
+ * CHOICE { utcTime UTCTime, generalTime GeneralizedTime } written by Steve
+ * Henson.
+ */
+
+IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
+
+IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
+
+ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
+{
+    return ASN1_TIME_adj(s, t, 0, 0);
+}
+
+ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
+                         int offset_day, long offset_sec)
+{
+    struct tm *ts;
+    struct tm data;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ERROR_GETTING_TIME);
+        return NULL;
+    }
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            return NULL;
+    }
+    if ((ts->tm_year >= 50) && (ts->tm_year < 150))
+        return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
+    return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
+}
+
+int ASN1_TIME_check(ASN1_TIME *t)
+{
+    if (t->type == V_ASN1_GENERALIZEDTIME)
+        return ASN1_GENERALIZEDTIME_check(t);
+    else if (t->type == V_ASN1_UTCTIME)
+        return ASN1_UTCTIME_check(t);
+    return 0;
+}
+
+/* Convert an ASN1_TIME structure to GeneralizedTime */
+ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t,
+                                                   ASN1_GENERALIZEDTIME **out)
+{
+    ASN1_GENERALIZEDTIME *ret = NULL;
+    char *str;
+    int newlen;
+
+    if (!ASN1_TIME_check(t))
+        return NULL;
+
+    if (!out || !*out) {
+        if (!(ret = ASN1_GENERALIZEDTIME_new()))
+            goto err;
+    } else {
+        ret = *out;
+    }
+
+    /* If already GeneralizedTime just copy across */
+    if (t->type == V_ASN1_GENERALIZEDTIME) {
+        if (!ASN1_STRING_set(ret, t->data, t->length))
+            goto err;
+        goto done;
+    }
+
+    /* grow the string */
+    if (!ASN1_STRING_set(ret, NULL, t->length + 2))
+        goto err;
+    /* ASN1_STRING_set() allocated 'len + 1' bytes. */
+    newlen = t->length + 2 + 1;
+    str = (char *)ret->data;
+    /* Work out the century and prepend */
+    if (t->data[0] >= '5')
+        OPENSSL_strlcpy(str, "19", newlen);
+    else
+        OPENSSL_strlcpy(str, "20", newlen);
+
+    OPENSSL_strlcat(str, (char *)t->data, newlen);
+
+ done:
+   if (out != NULL && *out == NULL)
+       *out = ret;
+   return ret;
+
+ err:
+    if (out == NULL || *out != ret)
+        ASN1_GENERALIZEDTIME_free(ret);
+    return NULL;
+}
+
+
+int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
+{
+    ASN1_TIME t;
+
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    t.flags = 0;
+
+    t.type = V_ASN1_UTCTIME;
+
+    if (!ASN1_TIME_check(&t)) {
+        t.type = V_ASN1_GENERALIZEDTIME;
+        if (!ASN1_TIME_check(&t))
+            return 0;
+    }
+
+    if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
+        return 0;
+
+    return 1;
+}
+
+static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
+{
+    if (t == NULL) {
+        time_t now_t;
+        time(&now_t);
+        if (OPENSSL_gmtime(&now_t, tm))
+            return 1;
+        return 0;
+    }
+
+    if (t->type == V_ASN1_UTCTIME)
+        return asn1_utctime_to_tm(tm, t);
+    else if (t->type == V_ASN1_GENERALIZEDTIME)
+        return asn1_generalizedtime_to_tm(tm, t);
+
+    return 0;
+}
+
+int ASN1_TIME_diff(int *pday, int *psec,
+                   const ASN1_TIME *from, const ASN1_TIME *to)
+{
+    struct tm tm_from, tm_to;
+    if (!asn1_time_to_tm(&tm_from, from))
+        return 0;
+    if (!asn1_time_to_tm(&tm_to, to))
+        return 0;
+    return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c
new file mode 100644
index 0000000..9e4461d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c	
@@ -0,0 +1,151 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+
+int ASN1_TYPE_get(ASN1_TYPE *a)
+{
+    if ((a->value.ptr != NULL) || (a->type == V_ASN1_NULL))
+        return (a->type);
+    else
+        return (0);
+}
+
+void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value)
+{
+    if (a->value.ptr != NULL) {
+        ASN1_TYPE **tmp_a = &a;
+        ASN1_primitive_free((ASN1_VALUE **)tmp_a, NULL);
+    }
+    a->type = type;
+    if (type == V_ASN1_BOOLEAN)
+        a->value.boolean = value ? 0xff : 0;
+    else
+        a->value.ptr = value;
+}
+
+int ASN1_TYPE_set1(ASN1_TYPE *a, int type, const void *value)
+{
+    if (!value || (type == V_ASN1_BOOLEAN)) {
+        void *p = (void *)value;
+        ASN1_TYPE_set(a, type, p);
+    } else if (type == V_ASN1_OBJECT) {
+        ASN1_OBJECT *odup;
+        odup = OBJ_dup(value);
+        if (!odup)
+            return 0;
+        ASN1_TYPE_set(a, type, odup);
+    } else {
+        ASN1_STRING *sdup;
+        sdup = ASN1_STRING_dup(value);
+        if (!sdup)
+            return 0;
+        ASN1_TYPE_set(a, type, sdup);
+    }
+    return 1;
+}
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b)
+{
+    int result = -1;
+
+    if (!a || !b || a->type != b->type)
+        return -1;
+
+    switch (a->type) {
+    case V_ASN1_OBJECT:
+        result = OBJ_cmp(a->value.object, b->value.object);
+        break;
+    case V_ASN1_NULL:
+        result = 0;             /* They do not have content. */
+        break;
+    case V_ASN1_BOOLEAN:
+        result = a->value.boolean - b->value.boolean;
+        break;
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+    case V_ASN1_BIT_STRING:
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_OTHER:
+    default:
+        result = ASN1_STRING_cmp((ASN1_STRING *)a->value.ptr,
+                                 (ASN1_STRING *)b->value.ptr);
+        break;
+    }
+
+    return result;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c.grpc_back
new file mode 100644
index 0000000..734ff8b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_type.c.grpc_back	
@@ -0,0 +1,151 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+int ASN1_TYPE_get(ASN1_TYPE *a)
+{
+    if ((a->value.ptr != NULL) || (a->type == V_ASN1_NULL))
+        return (a->type);
+    else
+        return (0);
+}
+
+void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value)
+{
+    if (a->value.ptr != NULL) {
+        ASN1_TYPE **tmp_a = &a;
+        ASN1_primitive_free((ASN1_VALUE **)tmp_a, NULL);
+    }
+    a->type = type;
+    if (type == V_ASN1_BOOLEAN)
+        a->value.boolean = value ? 0xff : 0;
+    else
+        a->value.ptr = value;
+}
+
+int ASN1_TYPE_set1(ASN1_TYPE *a, int type, const void *value)
+{
+    if (!value || (type == V_ASN1_BOOLEAN)) {
+        void *p = (void *)value;
+        ASN1_TYPE_set(a, type, p);
+    } else if (type == V_ASN1_OBJECT) {
+        ASN1_OBJECT *odup;
+        odup = OBJ_dup(value);
+        if (!odup)
+            return 0;
+        ASN1_TYPE_set(a, type, odup);
+    } else {
+        ASN1_STRING *sdup;
+        sdup = ASN1_STRING_dup(value);
+        if (!sdup)
+            return 0;
+        ASN1_TYPE_set(a, type, sdup);
+    }
+    return 1;
+}
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b)
+{
+    int result = -1;
+
+    if (!a || !b || a->type != b->type)
+        return -1;
+
+    switch (a->type) {
+    case V_ASN1_OBJECT:
+        result = OBJ_cmp(a->value.object, b->value.object);
+        break;
+    case V_ASN1_NULL:
+        result = 0;             /* They do not have content. */
+        break;
+    case V_ASN1_BOOLEAN:
+        result = a->value.boolean - b->value.boolean;
+        break;
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+    case V_ASN1_BIT_STRING:
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_OTHER:
+    default:
+        result = ASN1_STRING_cmp((ASN1_STRING *)a->value.ptr,
+                                 (ASN1_STRING *)b->value.ptr);
+        break;
+    }
+
+    return result;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c
new file mode 100644
index 0000000..c005f81
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c	
@@ -0,0 +1,303 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+
+
+int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
+{
+    static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
+    static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
+    char *a;
+    int n, i, l, o;
+
+    if (d->type != V_ASN1_UTCTIME)
+        return (0);
+    l = d->length;
+    a = (char *)d->data;
+    o = 0;
+
+    if (l < 11)
+        goto err;
+    for (i = 0; i < 6; i++) {
+        if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
+            i++;
+            if (tm)
+                tm->tm_sec = 0;
+            break;
+        }
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = (n * 10) + a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((n < min[i]) || (n > max[i]))
+            goto err;
+        if (tm) {
+            switch (i) {
+            case 0:
+                tm->tm_year = n < 50 ? n + 100 : n;
+                break;
+            case 1:
+                tm->tm_mon = n - 1;
+                break;
+            case 2:
+                tm->tm_mday = n;
+                break;
+            case 3:
+                tm->tm_hour = n;
+                break;
+            case 4:
+                tm->tm_min = n;
+                break;
+            case 5:
+                tm->tm_sec = n;
+                break;
+            }
+        }
+    }
+    if (a[o] == 'Z')
+        o++;
+    else if ((a[o] == '+') || (a[o] == '-')) {
+        int offsign = a[o] == '-' ? 1 : -1, offset = 0;
+        o++;
+        if (o + 4 > l)
+            goto err;
+        for (i = 6; i < 8; i++) {
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = a[o] - '0';
+            o++;
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = (n * 10) + a[o] - '0';
+            if ((n < min[i]) || (n > max[i]))
+                goto err;
+            if (tm) {
+                if (i == 6)
+                    offset = n * 3600;
+                else if (i == 7)
+                    offset += n * 60;
+            }
+            o++;
+        }
+        if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
+            return 0;
+    }
+    return o == l;
+ err:
+    return 0;
+}
+
+int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
+{
+    return asn1_utctime_to_tm(NULL, d);
+}
+
+int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
+{
+    ASN1_UTCTIME t;
+
+    t.type = V_ASN1_UTCTIME;
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    if (ASN1_UTCTIME_check(&t)) {
+        if (s != NULL) {
+            if (!ASN1_STRING_set((ASN1_STRING *)s,
+                                 (unsigned char *)str, t.length))
+                return 0;
+            s->type = V_ASN1_UTCTIME;
+        }
+        return (1);
+    } else
+        return (0);
+}
+
+ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
+{
+    return ASN1_UTCTIME_adj(s, t, 0, 0);
+}
+
+ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
+                               int offset_day, long offset_sec)
+{
+    char *p;
+    struct tm *ts;
+    struct tm data;
+    size_t len = 20;
+    int free_s = 0;
+
+    if (s == NULL) {
+        free_s = 1;
+        s = M_ASN1_UTCTIME_new();
+    }
+    if (s == NULL)
+        goto err;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL)
+        goto err;
+
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            goto err;
+    }
+
+    if ((ts->tm_year < 50) || (ts->tm_year >= 150))
+        goto err;
+
+    p = (char *)s->data;
+    if ((p == NULL) || ((size_t)s->length < len)) {
+        p = OPENSSL_malloc(len);
+        if (p == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        if (s->data != NULL)
+            OPENSSL_free(s->data);
+        s->data = (unsigned char *)p;
+    }
+
+    BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
+                 ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
+                 ts->tm_sec);
+    s->length = strlen(p);
+    s->type = V_ASN1_UTCTIME;
+    return (s);
+ err:
+    if (free_s && s)
+        M_ASN1_UTCTIME_free(s);
+    return NULL;
+}
+
+int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
+{
+    struct tm stm, ttm;
+    int day, sec;
+
+    if (!asn1_utctime_to_tm(&stm, s))
+        return -2;
+
+    if (!OPENSSL_gmtime(&t, &ttm))
+        return -2;
+
+    if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
+        return -2;
+
+    if (day > 0)
+        return 1;
+    if (day < 0)
+        return -1;
+    if (sec > 0)
+        return 1;
+    if (sec < 0)
+        return -1;
+    return 0;
+}
+
+#if 0
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
+{
+    struct tm tm;
+    int offset;
+
+    OPENSSL_memset(&tm, '\0', sizeof tm);
+
+# define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
+    tm.tm_year = g2(s->data);
+    if (tm.tm_year < 50)
+        tm.tm_year += 100;
+    tm.tm_mon = g2(s->data + 2) - 1;
+    tm.tm_mday = g2(s->data + 4);
+    tm.tm_hour = g2(s->data + 6);
+    tm.tm_min = g2(s->data + 8);
+    tm.tm_sec = g2(s->data + 10);
+    if (s->data[12] == 'Z')
+        offset = 0;
+    else {
+        offset = g2(s->data + 13) * 60 + g2(s->data + 15);
+        if (s->data[12] == '-')
+            offset = -offset;
+    }
+# undef g2
+
+    return mktime(&tm) - offset * 60; /* FIXME: mktime assumes the current
+                                       * timezone instead of UTC, and unless
+                                       * we rewrite OpenSSL in Lisp we cannot
+                                       * locally change the timezone without
+                                       * possibly interfering with other
+                                       * parts of the program. timegm, which
+                                       * uses UTC, is non-standard. Also
+                                       * time_t is inappropriate for general
+                                       * UTC times because it may a 32 bit
+                                       * type. */
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c.grpc_back
new file mode 100644
index 0000000..f7519df
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utctm.c.grpc_back	
@@ -0,0 +1,303 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+
+
+int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
+{
+    static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
+    static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
+    char *a;
+    int n, i, l, o;
+
+    if (d->type != V_ASN1_UTCTIME)
+        return (0);
+    l = d->length;
+    a = (char *)d->data;
+    o = 0;
+
+    if (l < 11)
+        goto err;
+    for (i = 0; i < 6; i++) {
+        if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
+            i++;
+            if (tm)
+                tm->tm_sec = 0;
+            break;
+        }
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((a[o] < '0') || (a[o] > '9'))
+            goto err;
+        n = (n * 10) + a[o] - '0';
+        if (++o > l)
+            goto err;
+
+        if ((n < min[i]) || (n > max[i]))
+            goto err;
+        if (tm) {
+            switch (i) {
+            case 0:
+                tm->tm_year = n < 50 ? n + 100 : n;
+                break;
+            case 1:
+                tm->tm_mon = n - 1;
+                break;
+            case 2:
+                tm->tm_mday = n;
+                break;
+            case 3:
+                tm->tm_hour = n;
+                break;
+            case 4:
+                tm->tm_min = n;
+                break;
+            case 5:
+                tm->tm_sec = n;
+                break;
+            }
+        }
+    }
+    if (a[o] == 'Z')
+        o++;
+    else if ((a[o] == '+') || (a[o] == '-')) {
+        int offsign = a[o] == '-' ? 1 : -1, offset = 0;
+        o++;
+        if (o + 4 > l)
+            goto err;
+        for (i = 6; i < 8; i++) {
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = a[o] - '0';
+            o++;
+            if ((a[o] < '0') || (a[o] > '9'))
+                goto err;
+            n = (n * 10) + a[o] - '0';
+            if ((n < min[i]) || (n > max[i]))
+                goto err;
+            if (tm) {
+                if (i == 6)
+                    offset = n * 3600;
+                else if (i == 7)
+                    offset += n * 60;
+            }
+            o++;
+        }
+        if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
+            return 0;
+    }
+    return o == l;
+ err:
+    return 0;
+}
+
+int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
+{
+    return asn1_utctime_to_tm(NULL, d);
+}
+
+int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
+{
+    ASN1_UTCTIME t;
+
+    t.type = V_ASN1_UTCTIME;
+    t.length = strlen(str);
+    t.data = (unsigned char *)str;
+    if (ASN1_UTCTIME_check(&t)) {
+        if (s != NULL) {
+            if (!ASN1_STRING_set((ASN1_STRING *)s,
+                                 (unsigned char *)str, t.length))
+                return 0;
+            s->type = V_ASN1_UTCTIME;
+        }
+        return (1);
+    } else
+        return (0);
+}
+
+ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
+{
+    return ASN1_UTCTIME_adj(s, t, 0, 0);
+}
+
+ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
+                               int offset_day, long offset_sec)
+{
+    char *p;
+    struct tm *ts;
+    struct tm data;
+    size_t len = 20;
+    int free_s = 0;
+
+    if (s == NULL) {
+        free_s = 1;
+        s = M_ASN1_UTCTIME_new();
+    }
+    if (s == NULL)
+        goto err;
+
+    ts = OPENSSL_gmtime(&t, &data);
+    if (ts == NULL)
+        goto err;
+
+    if (offset_day || offset_sec) {
+        if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
+            goto err;
+    }
+
+    if ((ts->tm_year < 50) || (ts->tm_year >= 150))
+        goto err;
+
+    p = (char *)s->data;
+    if ((p == NULL) || ((size_t)s->length < len)) {
+        p = OPENSSL_malloc(len);
+        if (p == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        if (s->data != NULL)
+            OPENSSL_free(s->data);
+        s->data = (unsigned char *)p;
+    }
+
+    BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
+                 ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
+                 ts->tm_sec);
+    s->length = strlen(p);
+    s->type = V_ASN1_UTCTIME;
+    return (s);
+ err:
+    if (free_s && s)
+        M_ASN1_UTCTIME_free(s);
+    return NULL;
+}
+
+int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
+{
+    struct tm stm, ttm;
+    int day, sec;
+
+    if (!asn1_utctime_to_tm(&stm, s))
+        return -2;
+
+    if (!OPENSSL_gmtime(&t, &ttm))
+        return -2;
+
+    if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
+        return -2;
+
+    if (day > 0)
+        return 1;
+    if (day < 0)
+        return -1;
+    if (sec > 0)
+        return 1;
+    if (sec < 0)
+        return -1;
+    return 0;
+}
+
+#if 0
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
+{
+    struct tm tm;
+    int offset;
+
+    OPENSSL_memset(&tm, '\0', sizeof tm);
+
+# define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
+    tm.tm_year = g2(s->data);
+    if (tm.tm_year < 50)
+        tm.tm_year += 100;
+    tm.tm_mon = g2(s->data + 2) - 1;
+    tm.tm_mday = g2(s->data + 4);
+    tm.tm_hour = g2(s->data + 6);
+    tm.tm_min = g2(s->data + 8);
+    tm.tm_sec = g2(s->data + 10);
+    if (s->data[12] == 'Z')
+        offset = 0;
+    else {
+        offset = g2(s->data + 13) * 60 + g2(s->data + 15);
+        if (s->data[12] == '-')
+            offset = -offset;
+    }
+# undef g2
+
+    return mktime(&tm) - offset * 60; /* FIXME: mktime assumes the current
+                                       * timezone instead of UTC, and unless
+                                       * we rewrite OpenSSL in Lisp we cannot
+                                       * locally change the timezone without
+                                       * possibly interfering with other
+                                       * parts of the program. timegm, which
+                                       * uses UTC, is non-standard. Also
+                                       * time_t is inappropriate for general
+                                       * UTC times because it may a 32 bit
+                                       * type. */
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c
new file mode 100644
index 0000000..59328d8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c	
@@ -0,0 +1,236 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+
+/* UTF8 utilities */
+
+/*
+ * This parses a UTF8 string one character at a time. It is passed a pointer
+ * to the string and the length of the string. It sets 'value' to the value
+ * of the current character. It returns the number of characters read or a
+ * negative error code: -1 = string too short -2 = illegal character -3 =
+ * subsequent characters not of the form 10xxxxxx -4 = character encoded
+ * incorrectly (not minimal length).
+ */
+
+int UTF8_getc(const unsigned char *str, int len, uint32_t *val)
+{
+    const unsigned char *p;
+    uint32_t value;
+    int ret;
+    if (len <= 0)
+        return 0;
+    p = str;
+
+    /* Check syntax and work out the encoded value (if correct) */
+    if ((*p & 0x80) == 0) {
+        value = *p++ & 0x7f;
+        ret = 1;
+    } else if ((*p & 0xe0) == 0xc0) {
+        if (len < 2)
+            return -1;
+        if ((p[1] & 0xc0) != 0x80)
+            return -3;
+        value = (*p++ & 0x1f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x80)
+            return -4;
+        ret = 2;
+    } else if ((*p & 0xf0) == 0xe0) {
+        if (len < 3)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80))
+            return -3;
+        value = (*p++ & 0xf) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x800)
+            return -4;
+        ret = 3;
+    } else if ((*p & 0xf8) == 0xf0) {
+        if (len < 4)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x7)) << 18;
+        value |= (*p++ & 0x3f) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x10000)
+            return -4;
+        ret = 4;
+    } else if ((*p & 0xfc) == 0xf8) {
+        if (len < 5)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80)
+            || ((p[4] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x3)) << 24;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 18;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x200000)
+            return -4;
+        ret = 5;
+    } else if ((*p & 0xfe) == 0xfc) {
+        if (len < 6)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80)
+            || ((p[4] & 0xc0) != 0x80)
+            || ((p[5] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x1)) << 30;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 24;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 18;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x4000000)
+            return -4;
+        ret = 6;
+    } else
+        return -2;
+    *val = value;
+    return ret;
+}
+
+/*
+ * This takes a character 'value' and writes the UTF8 encoded value in 'str'
+ * where 'str' is a buffer containing 'len' characters. Returns the number of
+ * characters written or -1 if 'len' is too small. 'str' can be set to NULL
+ * in which case it just returns the number of characters. It will need at
+ * most 6 characters.
+ */
+
+int UTF8_putc(unsigned char *str, int len, uint32_t value)
+{
+    if (!str)
+        len = 6;                /* Maximum we will need */
+    else if (len <= 0)
+        return -1;
+    if (value < 0x80) {
+        if (str)
+            *str = (unsigned char)value;
+        return 1;
+    }
+    if (value < 0x800) {
+        if (len < 2)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 6) & 0x1f) | 0xc0);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 2;
+    }
+    if (value < 0x10000) {
+        if (len < 3)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 12) & 0xf) | 0xe0);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 3;
+    }
+    if (value < 0x200000) {
+        if (len < 4)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 18) & 0x7) | 0xf0);
+            *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 4;
+    }
+    if (value < 0x4000000) {
+        if (len < 5)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 24) & 0x3) | 0xf8);
+            *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 5;
+    }
+    if (len < 6)
+        return -1;
+    if (str) {
+        *str++ = (unsigned char)(((value >> 30) & 0x1) | 0xfc);
+        *str++ = (unsigned char)(((value >> 24) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+        *str = (unsigned char)((value & 0x3f) | 0x80);
+    }
+    return 6;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c.grpc_back
new file mode 100644
index 0000000..119ccf9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/a_utf8.c.grpc_back	
@@ -0,0 +1,236 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+
+/* UTF8 utilities */
+
+/*
+ * This parses a UTF8 string one character at a time. It is passed a pointer
+ * to the string and the length of the string. It sets 'value' to the value
+ * of the current character. It returns the number of characters read or a
+ * negative error code: -1 = string too short -2 = illegal character -3 =
+ * subsequent characters not of the form 10xxxxxx -4 = character encoded
+ * incorrectly (not minimal length).
+ */
+
+int UTF8_getc(const unsigned char *str, int len, uint32_t *val)
+{
+    const unsigned char *p;
+    uint32_t value;
+    int ret;
+    if (len <= 0)
+        return 0;
+    p = str;
+
+    /* Check syntax and work out the encoded value (if correct) */
+    if ((*p & 0x80) == 0) {
+        value = *p++ & 0x7f;
+        ret = 1;
+    } else if ((*p & 0xe0) == 0xc0) {
+        if (len < 2)
+            return -1;
+        if ((p[1] & 0xc0) != 0x80)
+            return -3;
+        value = (*p++ & 0x1f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x80)
+            return -4;
+        ret = 2;
+    } else if ((*p & 0xf0) == 0xe0) {
+        if (len < 3)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80))
+            return -3;
+        value = (*p++ & 0xf) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x800)
+            return -4;
+        ret = 3;
+    } else if ((*p & 0xf8) == 0xf0) {
+        if (len < 4)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x7)) << 18;
+        value |= (*p++ & 0x3f) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x10000)
+            return -4;
+        ret = 4;
+    } else if ((*p & 0xfc) == 0xf8) {
+        if (len < 5)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80)
+            || ((p[4] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x3)) << 24;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 18;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x200000)
+            return -4;
+        ret = 5;
+    } else if ((*p & 0xfe) == 0xfc) {
+        if (len < 6)
+            return -1;
+        if (((p[1] & 0xc0) != 0x80)
+            || ((p[2] & 0xc0) != 0x80)
+            || ((p[3] & 0xc0) != 0x80)
+            || ((p[4] & 0xc0) != 0x80)
+            || ((p[5] & 0xc0) != 0x80))
+            return -3;
+        value = ((uint32_t)(*p++ & 0x1)) << 30;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 24;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 18;
+        value |= ((uint32_t)(*p++ & 0x3f)) << 12;
+        value |= (*p++ & 0x3f) << 6;
+        value |= *p++ & 0x3f;
+        if (value < 0x4000000)
+            return -4;
+        ret = 6;
+    } else
+        return -2;
+    *val = value;
+    return ret;
+}
+
+/*
+ * This takes a character 'value' and writes the UTF8 encoded value in 'str'
+ * where 'str' is a buffer containing 'len' characters. Returns the number of
+ * characters written or -1 if 'len' is too small. 'str' can be set to NULL
+ * in which case it just returns the number of characters. It will need at
+ * most 6 characters.
+ */
+
+int UTF8_putc(unsigned char *str, int len, uint32_t value)
+{
+    if (!str)
+        len = 6;                /* Maximum we will need */
+    else if (len <= 0)
+        return -1;
+    if (value < 0x80) {
+        if (str)
+            *str = (unsigned char)value;
+        return 1;
+    }
+    if (value < 0x800) {
+        if (len < 2)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 6) & 0x1f) | 0xc0);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 2;
+    }
+    if (value < 0x10000) {
+        if (len < 3)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 12) & 0xf) | 0xe0);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 3;
+    }
+    if (value < 0x200000) {
+        if (len < 4)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 18) & 0x7) | 0xf0);
+            *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 4;
+    }
+    if (value < 0x4000000) {
+        if (len < 5)
+            return -1;
+        if (str) {
+            *str++ = (unsigned char)(((value >> 24) & 0x3) | 0xf8);
+            *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+            *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+            *str = (unsigned char)((value & 0x3f) | 0x80);
+        }
+        return 5;
+    }
+    if (len < 6)
+        return -1;
+    if (str) {
+        *str++ = (unsigned char)(((value >> 30) & 0x1) | 0xfc);
+        *str++ = (unsigned char)(((value >> 24) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+        *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+        *str = (unsigned char)((value & 0x3f) | 0x80);
+    }
+    return 6;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c
new file mode 100644
index 0000000..7694e4e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c	
@@ -0,0 +1,446 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1_mac.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+/* Cross-module errors from crypto/x509/i2d_pr.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_PUBLIC_KEY_TYPE)
+
+/* Cross-module errors from crypto/x509/algorithm.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, CONTEXT_NOT_INITIALISED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DIGEST_AND_KEY_TYPE_NOT_SUPPORTED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_MESSAGE_DIGEST_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_SIGNATURE_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, WRONG_PUBLIC_KEY_TYPE)
+/*
+ * Cross-module errors from crypto/x509/asn1_gen.c. TODO(davidben): Remove
+ * these once asn1_gen.c is gone.
+ */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DEPTH_EXCEEDED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BITSTRING_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BOOLEAN)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_HEX)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_IMPLICIT_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_INTEGER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NESTED_TAGGING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NULL_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_OBJECT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_TIME_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INTEGER_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_MODIFIER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_NUMBER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, LIST_ERROR)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, MISSING_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, OBJECT_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, SEQUENCE_OR_SET_NEEDS_CONFIG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, TIME_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_TYPE)
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max);
+static void asn1_put_length(unsigned char **pp, int length);
+
+int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
+                    int *pclass, long omax)
+{
+    int i, ret;
+    long l;
+    const unsigned char *p = *pp;
+    int tag, xclass, inf;
+    long max = omax;
+
+    if (!max)
+        goto err;
+    ret = (*p & V_ASN1_CONSTRUCTED);
+    xclass = (*p & V_ASN1_PRIVATE);
+    i = *p & V_ASN1_PRIMITIVE_TAG;
+    if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
+        p++;
+        if (--max == 0)
+            goto err;
+        l = 0;
+        while (*p & 0x80) {
+            l <<= 7L;
+            l |= *(p++) & 0x7f;
+            if (--max == 0)
+                goto err;
+            if (l > (INT_MAX >> 7L))
+                goto err;
+        }
+        l <<= 7L;
+        l |= *(p++) & 0x7f;
+        tag = (int)l;
+        if (--max == 0)
+            goto err;
+    } else {
+        tag = i;
+        p++;
+        if (--max == 0)
+            goto err;
+    }
+
+    /* To avoid ambiguity with V_ASN1_NEG, impose a limit on universal tags. */
+    if (xclass == V_ASN1_UNIVERSAL && tag > V_ASN1_MAX_UNIVERSAL)
+        goto err;
+
+    *ptag = tag;
+    *pclass = xclass;
+    if (!asn1_get_length(&p, &inf, plength, max))
+        goto err;
+
+    if (inf && !(ret & V_ASN1_CONSTRUCTED))
+        goto err;
+
+#if 0
+    fprintf(stderr, "p=%d + *plength=%ld > omax=%ld + *pp=%d  (%d > %d)\n",
+            (int)p, *plength, omax, (int)*pp, (int)(p + *plength),
+            (int)(omax + *pp));
+
+#endif
+    if (*plength > (omax - (p - *pp))) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+        /*
+         * Set this so that even if things are not long enough the values are
+         * set correctly
+         */
+        ret |= 0x80;
+    }
+    *pp = p;
+    return (ret | inf);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_HEADER_TOO_LONG);
+    return (0x80);
+}
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max)
+{
+    const unsigned char *p = *pp;
+    unsigned long ret = 0;
+    unsigned long i;
+
+    if (max-- < 1)
+        return 0;
+    if (*p == 0x80) {
+        *inf = 1;
+        ret = 0;
+        p++;
+    } else {
+        *inf = 0;
+        i = *p & 0x7f;
+        if (*(p++) & 0x80) {
+            if (i > sizeof(ret) || max < (long)i)
+                return 0;
+            while (i-- > 0) {
+                ret <<= 8L;
+                ret |= *(p++);
+            }
+        } else
+            ret = i;
+    }
+    /*
+     * Bound the length to comfortably fit in an int. Lengths in this module
+     * often switch between int and long without overflow checks.
+     */
+    if (ret > INT_MAX / 2)
+        return 0;
+    *pp = p;
+    *rl = (long)ret;
+    return 1;
+}
+
+/*
+ * class 0 is constructed constructed == 2 for indefinite length constructed
+ */
+void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
+                     int xclass)
+{
+    unsigned char *p = *pp;
+    int i, ttag;
+
+    i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
+    i |= (xclass & V_ASN1_PRIVATE);
+    if (tag < 31)
+        *(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
+    else {
+        *(p++) = i | V_ASN1_PRIMITIVE_TAG;
+        for (i = 0, ttag = tag; ttag > 0; i++)
+            ttag >>= 7;
+        ttag = i;
+        while (i-- > 0) {
+            p[i] = tag & 0x7f;
+            if (i != (ttag - 1))
+                p[i] |= 0x80;
+            tag >>= 7;
+        }
+        p += ttag;
+    }
+    if (constructed == 2)
+        *(p++) = 0x80;
+    else
+        asn1_put_length(&p, length);
+    *pp = p;
+}
+
+int ASN1_put_eoc(unsigned char **pp)
+{
+    unsigned char *p = *pp;
+    *p++ = 0;
+    *p++ = 0;
+    *pp = p;
+    return 2;
+}
+
+static void asn1_put_length(unsigned char **pp, int length)
+{
+    unsigned char *p = *pp;
+    int i, l;
+    if (length <= 127)
+        *(p++) = (unsigned char)length;
+    else {
+        l = length;
+        for (i = 0; l > 0; i++)
+            l >>= 8;
+        *(p++) = i | 0x80;
+        l = i;
+        while (i-- > 0) {
+            p[i] = length & 0xff;
+            length >>= 8;
+        }
+        p += l;
+    }
+    *pp = p;
+}
+
+int ASN1_object_size(int constructed, int length, int tag)
+{
+    int ret = 1;
+    if (length < 0)
+        return -1;
+    if (tag >= 31) {
+        while (tag > 0) {
+            tag >>= 7;
+            ret++;
+        }
+    }
+    if (constructed == 2) {
+        ret += 3;
+    } else {
+        ret++;
+        if (length > 127) {
+            int tmplen = length;
+            while (tmplen > 0) {
+                tmplen >>= 8;
+                ret++;
+            }
+        }
+    }
+    if (ret >= INT_MAX - length)
+        return -1;
+    return ret + length;
+}
+
+int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
+{
+    if (str == NULL)
+        return 0;
+    dst->type = str->type;
+    if (!ASN1_STRING_set(dst, str->data, str->length))
+        return 0;
+    dst->flags = str->flags;
+    return 1;
+}
+
+ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
+{
+    ASN1_STRING *ret;
+    if (!str)
+        return NULL;
+    ret = ASN1_STRING_new();
+    if (!ret)
+        return NULL;
+    if (!ASN1_STRING_copy(ret, str)) {
+        ASN1_STRING_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
+{
+    unsigned char *c;
+    const char *data = _data;
+
+    if (len < 0) {
+        if (data == NULL)
+            return (0);
+        else
+            len = strlen(data);
+    }
+    if ((str->length <= len) || (str->data == NULL)) {
+        c = str->data;
+        if (c == NULL)
+            str->data = OPENSSL_malloc(len + 1);
+        else
+            str->data = OPENSSL_realloc(c, len + 1);
+
+        if (str->data == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            str->data = c;
+            return (0);
+        }
+    }
+    str->length = len;
+    if (data != NULL) {
+        OPENSSL_memcpy(str->data, data, len);
+        /* an allowance for strings :-) */
+        str->data[len] = '\0';
+    }
+    return (1);
+}
+
+void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
+{
+    if (str->data)
+        OPENSSL_free(str->data);
+    str->data = data;
+    str->length = len;
+}
+
+ASN1_STRING *ASN1_STRING_new(void)
+{
+    return (ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
+}
+
+ASN1_STRING *ASN1_STRING_type_new(int type)
+{
+    ASN1_STRING *ret;
+
+    ret = (ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    ret->length = 0;
+    ret->type = type;
+    ret->data = NULL;
+    ret->flags = 0;
+    return (ret);
+}
+
+void ASN1_STRING_free(ASN1_STRING *a)
+{
+    if (a == NULL)
+        return;
+    if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
+        OPENSSL_free(a->data);
+    OPENSSL_free(a);
+}
+
+int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
+{
+    int i;
+
+    i = (a->length - b->length);
+    if (i == 0) {
+        i = OPENSSL_memcmp(a->data, b->data, a->length);
+        if (i == 0)
+            return (a->type - b->type);
+        else
+            return (i);
+    } else
+        return (i);
+}
+
+int ASN1_STRING_length(const ASN1_STRING *x)
+{
+    return M_ASN1_STRING_length(x);
+}
+
+void ASN1_STRING_length_set(ASN1_STRING *x, int len)
+{
+    M_ASN1_STRING_length_set(x, len);
+    return;
+}
+
+int ASN1_STRING_type(ASN1_STRING *x)
+{
+    return M_ASN1_STRING_type(x);
+}
+
+unsigned char *ASN1_STRING_data(ASN1_STRING *x)
+{
+    return M_ASN1_STRING_data(x);
+}
+
+const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
+{
+    return x->data;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c.grpc_back
new file mode 100644
index 0000000..8526aba
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_lib.c.grpc_back	
@@ -0,0 +1,446 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1_mac.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+/* Cross-module errors from crypto/x509/i2d_pr.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_PUBLIC_KEY_TYPE)
+
+/* Cross-module errors from crypto/x509/algorithm.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, CONTEXT_NOT_INITIALISED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DIGEST_AND_KEY_TYPE_NOT_SUPPORTED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_MESSAGE_DIGEST_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_SIGNATURE_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, WRONG_PUBLIC_KEY_TYPE)
+/*
+ * Cross-module errors from crypto/x509/asn1_gen.c. TODO(davidben): Remove
+ * these once asn1_gen.c is gone.
+ */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DEPTH_EXCEEDED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BITSTRING_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BOOLEAN)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_HEX)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_IMPLICIT_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_INTEGER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NESTED_TAGGING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NULL_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_OBJECT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_TIME_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INTEGER_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_MODIFIER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_NUMBER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, LIST_ERROR)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, MISSING_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, OBJECT_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, SEQUENCE_OR_SET_NEEDS_CONFIG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, TIME_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_TYPE)
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max);
+static void asn1_put_length(unsigned char **pp, int length);
+
+int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
+                    int *pclass, long omax)
+{
+    int i, ret;
+    long l;
+    const unsigned char *p = *pp;
+    int tag, xclass, inf;
+    long max = omax;
+
+    if (!max)
+        goto err;
+    ret = (*p & V_ASN1_CONSTRUCTED);
+    xclass = (*p & V_ASN1_PRIVATE);
+    i = *p & V_ASN1_PRIMITIVE_TAG;
+    if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
+        p++;
+        if (--max == 0)
+            goto err;
+        l = 0;
+        while (*p & 0x80) {
+            l <<= 7L;
+            l |= *(p++) & 0x7f;
+            if (--max == 0)
+                goto err;
+            if (l > (INT_MAX >> 7L))
+                goto err;
+        }
+        l <<= 7L;
+        l |= *(p++) & 0x7f;
+        tag = (int)l;
+        if (--max == 0)
+            goto err;
+    } else {
+        tag = i;
+        p++;
+        if (--max == 0)
+            goto err;
+    }
+
+    /* To avoid ambiguity with V_ASN1_NEG, impose a limit on universal tags. */
+    if (xclass == V_ASN1_UNIVERSAL && tag > V_ASN1_MAX_UNIVERSAL)
+        goto err;
+
+    *ptag = tag;
+    *pclass = xclass;
+    if (!asn1_get_length(&p, &inf, plength, max))
+        goto err;
+
+    if (inf && !(ret & V_ASN1_CONSTRUCTED))
+        goto err;
+
+#if 0
+    fprintf(stderr, "p=%d + *plength=%ld > omax=%ld + *pp=%d  (%d > %d)\n",
+            (int)p, *plength, omax, (int)*pp, (int)(p + *plength),
+            (int)(omax + *pp));
+
+#endif
+    if (*plength > (omax - (p - *pp))) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+        /*
+         * Set this so that even if things are not long enough the values are
+         * set correctly
+         */
+        ret |= 0x80;
+    }
+    *pp = p;
+    return (ret | inf);
+ err:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_HEADER_TOO_LONG);
+    return (0x80);
+}
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+                           long max)
+{
+    const unsigned char *p = *pp;
+    unsigned long ret = 0;
+    unsigned long i;
+
+    if (max-- < 1)
+        return 0;
+    if (*p == 0x80) {
+        *inf = 1;
+        ret = 0;
+        p++;
+    } else {
+        *inf = 0;
+        i = *p & 0x7f;
+        if (*(p++) & 0x80) {
+            if (i > sizeof(ret) || max < (long)i)
+                return 0;
+            while (i-- > 0) {
+                ret <<= 8L;
+                ret |= *(p++);
+            }
+        } else
+            ret = i;
+    }
+    /*
+     * Bound the length to comfortably fit in an int. Lengths in this module
+     * often switch between int and long without overflow checks.
+     */
+    if (ret > INT_MAX / 2)
+        return 0;
+    *pp = p;
+    *rl = (long)ret;
+    return 1;
+}
+
+/*
+ * class 0 is constructed constructed == 2 for indefinite length constructed
+ */
+void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
+                     int xclass)
+{
+    unsigned char *p = *pp;
+    int i, ttag;
+
+    i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
+    i |= (xclass & V_ASN1_PRIVATE);
+    if (tag < 31)
+        *(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
+    else {
+        *(p++) = i | V_ASN1_PRIMITIVE_TAG;
+        for (i = 0, ttag = tag; ttag > 0; i++)
+            ttag >>= 7;
+        ttag = i;
+        while (i-- > 0) {
+            p[i] = tag & 0x7f;
+            if (i != (ttag - 1))
+                p[i] |= 0x80;
+            tag >>= 7;
+        }
+        p += ttag;
+    }
+    if (constructed == 2)
+        *(p++) = 0x80;
+    else
+        asn1_put_length(&p, length);
+    *pp = p;
+}
+
+int ASN1_put_eoc(unsigned char **pp)
+{
+    unsigned char *p = *pp;
+    *p++ = 0;
+    *p++ = 0;
+    *pp = p;
+    return 2;
+}
+
+static void asn1_put_length(unsigned char **pp, int length)
+{
+    unsigned char *p = *pp;
+    int i, l;
+    if (length <= 127)
+        *(p++) = (unsigned char)length;
+    else {
+        l = length;
+        for (i = 0; l > 0; i++)
+            l >>= 8;
+        *(p++) = i | 0x80;
+        l = i;
+        while (i-- > 0) {
+            p[i] = length & 0xff;
+            length >>= 8;
+        }
+        p += l;
+    }
+    *pp = p;
+}
+
+int ASN1_object_size(int constructed, int length, int tag)
+{
+    int ret = 1;
+    if (length < 0)
+        return -1;
+    if (tag >= 31) {
+        while (tag > 0) {
+            tag >>= 7;
+            ret++;
+        }
+    }
+    if (constructed == 2) {
+        ret += 3;
+    } else {
+        ret++;
+        if (length > 127) {
+            int tmplen = length;
+            while (tmplen > 0) {
+                tmplen >>= 8;
+                ret++;
+            }
+        }
+    }
+    if (ret >= INT_MAX - length)
+        return -1;
+    return ret + length;
+}
+
+int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
+{
+    if (str == NULL)
+        return 0;
+    dst->type = str->type;
+    if (!ASN1_STRING_set(dst, str->data, str->length))
+        return 0;
+    dst->flags = str->flags;
+    return 1;
+}
+
+ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
+{
+    ASN1_STRING *ret;
+    if (!str)
+        return NULL;
+    ret = ASN1_STRING_new();
+    if (!ret)
+        return NULL;
+    if (!ASN1_STRING_copy(ret, str)) {
+        ASN1_STRING_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
+{
+    unsigned char *c;
+    const char *data = _data;
+
+    if (len < 0) {
+        if (data == NULL)
+            return (0);
+        else
+            len = strlen(data);
+    }
+    if ((str->length <= len) || (str->data == NULL)) {
+        c = str->data;
+        if (c == NULL)
+            str->data = OPENSSL_malloc(len + 1);
+        else
+            str->data = OPENSSL_realloc(c, len + 1);
+
+        if (str->data == NULL) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            str->data = c;
+            return (0);
+        }
+    }
+    str->length = len;
+    if (data != NULL) {
+        OPENSSL_memcpy(str->data, data, len);
+        /* an allowance for strings :-) */
+        str->data[len] = '\0';
+    }
+    return (1);
+}
+
+void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
+{
+    if (str->data)
+        OPENSSL_free(str->data);
+    str->data = data;
+    str->length = len;
+}
+
+ASN1_STRING *ASN1_STRING_new(void)
+{
+    return (ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
+}
+
+ASN1_STRING *ASN1_STRING_type_new(int type)
+{
+    ASN1_STRING *ret;
+
+    ret = (ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+    ret->length = 0;
+    ret->type = type;
+    ret->data = NULL;
+    ret->flags = 0;
+    return (ret);
+}
+
+void ASN1_STRING_free(ASN1_STRING *a)
+{
+    if (a == NULL)
+        return;
+    if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
+        OPENSSL_free(a->data);
+    OPENSSL_free(a);
+}
+
+int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
+{
+    int i;
+
+    i = (a->length - b->length);
+    if (i == 0) {
+        i = OPENSSL_memcmp(a->data, b->data, a->length);
+        if (i == 0)
+            return (a->type - b->type);
+        else
+            return (i);
+    } else
+        return (i);
+}
+
+int ASN1_STRING_length(const ASN1_STRING *x)
+{
+    return M_ASN1_STRING_length(x);
+}
+
+void ASN1_STRING_length_set(ASN1_STRING *x, int len)
+{
+    M_ASN1_STRING_length_set(x, len);
+    return;
+}
+
+int ASN1_STRING_type(ASN1_STRING *x)
+{
+    return M_ASN1_STRING_type(x);
+}
+
+unsigned char *ASN1_STRING_data(ASN1_STRING *x)
+{
+    return M_ASN1_STRING_data(x);
+}
+
+const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
+{
+    return x->data;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h
new file mode 100644
index 0000000..45405d2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h	
@@ -0,0 +1,104 @@
+/* asn1t.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#ifndef OPENSSL_HEADER_ASN1_ASN1_LOCL_H
+#define OPENSSL_HEADER_ASN1_ASN1_LOCL_H
+
+#include <time.h>
+
+#include <openssl_grpc/asn1.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* Wrapper functions for time functions. */
+
+/* OPENSSL_gmtime wraps |gmtime_r|. See the manual page for that function. */
+struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result);
+
+/* OPENSSL_gmtime_adj updates |tm| by adding |offset_day| days and |offset_sec|
+ * seconds. */
+int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
+
+/* OPENSSL_gmtime_diff calculates the difference between |from| and |to| and
+ * outputs the difference as a number of days and seconds in |*out_days| and
+ * |*out_secs|. */
+int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
+                        const struct tm *to);
+
+
+/* Internal ASN1 structures and functions: not for application use */
+
+int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
+int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);
+
+void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                            int combine);
+
+int UTF8_getc(const unsigned char *str, int len, uint32_t *val);
+int UTF8_putc(unsigned char *str, int len, uint32_t value);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_ASN1_ASN1_LOCL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h.grpc_back
new file mode 100644
index 0000000..8cef246
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_locl.h.grpc_back	
@@ -0,0 +1,104 @@
+/* asn1t.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#ifndef OPENSSL_HEADER_ASN1_ASN1_LOCL_H
+#define OPENSSL_HEADER_ASN1_ASN1_LOCL_H
+
+#include <time.h>
+
+#include <openssl/asn1.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* Wrapper functions for time functions. */
+
+/* OPENSSL_gmtime wraps |gmtime_r|. See the manual page for that function. */
+struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result);
+
+/* OPENSSL_gmtime_adj updates |tm| by adding |offset_day| days and |offset_sec|
+ * seconds. */
+int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
+
+/* OPENSSL_gmtime_diff calculates the difference between |from| and |to| and
+ * outputs the difference as a number of days and seconds in |*out_days| and
+ * |*out_secs|. */
+int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
+                        const struct tm *to);
+
+
+/* Internal ASN1 structures and functions: not for application use */
+
+int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
+int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);
+
+void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                            int combine);
+
+int UTF8_getc(const unsigned char *str, int len, uint32_t *val);
+int UTF8_putc(unsigned char *str, int len, uint32_t value);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_ASN1_ASN1_LOCL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c
new file mode 100644
index 0000000..55812d4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c	
@@ -0,0 +1,80 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+
+const char *ASN1_tag2str(int tag)
+{
+    static const char *const tag2str[] = {
+        "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */
+        "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */
+        "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", /* 10-13 */
+        "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", /* 15-17 */
+        "NUMERICSTRING", "PRINTABLESTRING", "T61STRING", /* 18-20 */
+        "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME", /* 21-24
+                                                                      */
+        "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", /* 25-27 */
+        "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING" /* 28-30 */
+    };
+
+    if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
+        tag &= ~0x100;
+
+    if (tag < 0 || tag > 30)
+        return "(unknown)";
+    return tag2str[tag];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c.grpc_back
new file mode 100644
index 0000000..b1a01ed
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn1_par.c.grpc_back	
@@ -0,0 +1,80 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+
+const char *ASN1_tag2str(int tag)
+{
+    static const char *const tag2str[] = {
+        "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */
+        "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */
+        "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", /* 10-13 */
+        "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", /* 15-17 */
+        "NUMERICSTRING", "PRINTABLESTRING", "T61STRING", /* 18-20 */
+        "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME", /* 21-24
+                                                                      */
+        "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", /* 25-27 */
+        "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING" /* 28-30 */
+    };
+
+    if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
+        tag &= ~0x100;
+
+    if (tag < 0 || tag > 30)
+        return "(unknown)";
+    return tag2str[tag];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c
new file mode 100644
index 0000000..6b2a1e7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c	
@@ -0,0 +1,105 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+/* ASN1_ITEM versions of the above */
+
+ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
+{
+    ASN1_STRING *octmp;
+
+    if (!oct || !*oct) {
+        if (!(octmp = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+        if (oct)
+            *oct = octmp;
+    } else
+        octmp = *oct;
+
+    if (octmp->data) {
+        OPENSSL_free(octmp->data);
+        octmp->data = NULL;
+    }
+
+    if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ENCODE_ERROR);
+        return NULL;
+    }
+    if (!octmp->data) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    return octmp;
+}
+
+/* Extract an ASN1 object from an ASN1_STRING */
+
+void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
+{
+    const unsigned char *p;
+    void *ret;
+
+    p = oct->data;
+    if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c.grpc_back
new file mode 100644
index 0000000..eff54e5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/asn_pack.c.grpc_back	
@@ -0,0 +1,105 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+/* ASN1_ITEM versions of the above */
+
+ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
+{
+    ASN1_STRING *octmp;
+
+    if (!oct || !*oct) {
+        if (!(octmp = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+        if (oct)
+            *oct = octmp;
+    } else
+        octmp = *oct;
+
+    if (octmp->data) {
+        OPENSSL_free(octmp->data);
+        octmp->data = NULL;
+    }
+
+    if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ENCODE_ERROR);
+        return NULL;
+    }
+    if (!octmp->data) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    return octmp;
+}
+
+/* Extract an ASN1 object from an ASN1_STRING */
+
+void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
+{
+    const unsigned char *p;
+    void *ret;
+
+    p = oct->data;
+    if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c
new file mode 100644
index 0000000..84e32b5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/bio.h>
+
+/* Based on a_int.c: equivalent ENUMERATED functions */
+
+int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "00", 2) != 2)
+            goto err;
+        n = 2;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c.grpc_back
new file mode 100644
index 0000000..7ce479d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_enum.c.grpc_back	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/bio.h>
+
+/* Based on a_int.c: equivalent ENUMERATED functions */
+
+int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "00", 2) != 2)
+            goto err;
+        n = 2;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c
new file mode 100644
index 0000000..a7bd709
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c	
@@ -0,0 +1,97 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/bio.h>
+
+int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->type & V_ASN1_NEG) {
+        if (BIO_write(bp, "-", 1) != 1)
+            goto err;
+        n = 1;
+    }
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "00", 2) != 2)
+            goto err;
+        n += 2;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c.grpc_back
new file mode 100644
index 0000000..79ea152
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_int.c.grpc_back	
@@ -0,0 +1,97 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/bio.h>
+
+int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->type & V_ASN1_NEG) {
+        if (BIO_write(bp, "-", 1) != 1)
+            goto err;
+        n = 1;
+    }
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "00", 2) != 2)
+            goto err;
+        n += 2;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c
new file mode 100644
index 0000000..a6af1a0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c	
@@ -0,0 +1,91 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/bio.h>
+
+int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "0", 1) != 1)
+            goto err;
+        n = 1;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c.grpc_back
new file mode 100644
index 0000000..97c6ae7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/f_string.c.grpc_back	
@@ -0,0 +1,91 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/bio.h>
+
+int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type)
+{
+    int i, n = 0;
+    static const char *h = "0123456789ABCDEF";
+    char buf[2];
+
+    if (a == NULL)
+        return (0);
+
+    if (a->length == 0) {
+        if (BIO_write(bp, "0", 1) != 1)
+            goto err;
+        n = 1;
+    } else {
+        for (i = 0; i < a->length; i++) {
+            if ((i != 0) && (i % 35 == 0)) {
+                if (BIO_write(bp, "\\\n", 2) != 2)
+                    goto err;
+                n += 2;
+            }
+            buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
+            buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
+            if (BIO_write(bp, buf, 2) != 2)
+                goto err;
+            n += 2;
+        }
+    }
+    return (n);
+ err:
+    return (-1);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c
new file mode 100644
index 0000000..e205454
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c	
@@ -0,0 +1,1244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+/*
+ * Constructed types with a recursive definition (such as can be found in PKCS7)
+ * could eventually exceed the stack given malicious input with excessive
+ * recursion. Therefore we limit the stack depth. This is the maximum number of
+ * recursive invocations of asn1_item_embed_d2i().
+ */
+#define ASN1_MAX_CONSTRUCTED_NEST 30
+
+static int asn1_check_eoc(const unsigned char **in, long len);
+static int asn1_find_end(const unsigned char **in, long len, char inf);
+
+static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
+                        char inf, int tag, int aclass, int depth);
+
+static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen);
+
+static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx);
+
+static int asn1_template_ex_d2i(ASN1_VALUE **pval,
+                                const unsigned char **in, long len,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx, int depth);
+static int asn1_template_noexp_d2i(ASN1_VALUE **val,
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx, int depth);
+static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
+                                 const unsigned char **in, long len,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt,
+                                 ASN1_TLC *ctx);
+
+/* Table to convert tags to bit values, used for MSTRING type */
+static const unsigned long tag2bit[32] = {
+    0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
+    B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN, /* tags 4- 7 */
+    B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, /* tags
+                                                                     * 8-11 */
+    B_ASN1_UTF8STRING, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, /* tags
+                                                                        * 12-15
+                                                                        */
+    B_ASN1_SEQUENCE, 0, B_ASN1_NUMERICSTRING, B_ASN1_PRINTABLESTRING, /* tags
+                                                                       * 16-19
+                                                                       */
+    B_ASN1_T61STRING, B_ASN1_VIDEOTEXSTRING, B_ASN1_IA5STRING, /* tags 20-22 */
+    B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME, /* tags 23-24 */
+    B_ASN1_GRAPHICSTRING, B_ASN1_ISO64STRING, B_ASN1_GENERALSTRING, /* tags
+                                                                     * 25-27 */
+    B_ASN1_UNIVERSALSTRING, B_ASN1_UNKNOWN, B_ASN1_BMPSTRING, B_ASN1_UNKNOWN, /* tags
+                                                                               * 28-31
+                                                                               */
+};
+
+unsigned long ASN1_tag2bit(int tag)
+{
+    if ((tag < 0) || (tag > 30))
+        return 0;
+    return tag2bit[tag];
+}
+
+/* Macro to initialize and invalidate the cache */
+
+#define asn1_tlc_clear(c)       if (c) (c)->valid = 0
+/* Version to avoid compiler warning about 'c' always non-NULL */
+#define asn1_tlc_clear_nc(c)    (c)->valid = 0
+
+/*
+ * Decode an ASN1 item, this currently behaves just like a standard 'd2i'
+ * function. 'in' points to a buffer to read the data from, in future we
+ * will have more advanced versions that can input data a piece at a time and
+ * this will simply be a special case.
+ */
+
+ASN1_VALUE *ASN1_item_d2i(ASN1_VALUE **pval,
+                          const unsigned char **in, long len,
+                          const ASN1_ITEM *it)
+{
+    ASN1_TLC c;
+    ASN1_VALUE *ptmpval = NULL;
+    if (!pval)
+        pval = &ptmpval;
+    asn1_tlc_clear_nc(&c);
+    if (ASN1_item_ex_d2i(pval, in, len, it, -1, 0, 0, &c) > 0)
+        return *pval;
+    return NULL;
+}
+
+/*
+ * Decode an item, taking care of IMPLICIT tagging, if any. If 'opt' set and
+ * tag mismatch return -1 to handle OPTIONAL
+ */
+
+static int asn1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in,
+                            long len, const ASN1_ITEM *it, int tag, int aclass,
+                            char opt, ASN1_TLC *ctx, int depth)
+{
+    const ASN1_TEMPLATE *tt, *errtt = NULL;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    const unsigned char *p = NULL, *q;
+    unsigned char *wp = NULL;   /* BIG FAT WARNING! BREAKS CONST WHERE USED */
+    unsigned char imphack = 0, oclass;
+    char seq_eoc, seq_nolen, cst, isopt;
+    long tmplen;
+    int i;
+    int otag;
+    int ret = 0;
+    ASN1_VALUE **pchptr, *ptmpval;
+    int combine = aclass & ASN1_TFLG_COMBINE;
+    aclass &= ~ASN1_TFLG_COMBINE;
+    if (!pval)
+        return 0;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+    /*
+     * Bound |len| to comfortably fit in an int. Lengths in this module often
+     * switch between int and long without overflow checks.
+     */
+    if (len > INT_MAX/2) {
+        len = INT_MAX/2;
+    }
+
+    if (++depth > ASN1_MAX_CONSTRUCTED_NEST) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_TOO_DEEP);
+        goto err;
+    }
+
+    switch (it->itype) {
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates) {
+            /*
+             * tagging or OPTIONAL is currently illegal on an item template
+             * because the flags can't get passed down. In practice this
+             * isn't a problem: we include the relevant flags from the item
+             * template in the template itself.
+             */
+            if ((tag != -1) || opt) {
+                OPENSSL_PUT_ERROR(ASN1,
+                                  ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
+                goto err;
+            }
+            return asn1_template_ex_d2i(pval, in, len,
+                                        it->templates, opt, ctx, depth);
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it,
+                                     tag, aclass, opt, ctx);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        p = *in;
+        /* Just read in tag and class */
+        ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
+                              &p, len, -1, 0, 1, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Must be UNIVERSAL class */
+        if (oclass != V_ASN1_UNIVERSAL) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MSTRING_NOT_UNIVERSAL);
+            goto err;
+        }
+        /* Check tag matches bit map */
+        if (!(ASN1_tag2bit(otag) & it->utype)) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MSTRING_WRONG_TAG);
+            goto err;
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it, otag, 0, 0, ctx);
+
+    case ASN1_ITYPE_EXTERN:
+        /* Use new style d2i */
+        ef = it->funcs;
+        return ef->asn1_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx);
+
+    case ASN1_ITYPE_COMPAT:
+        /* we must resort to old style evil hackery */
+        cf = it->funcs;
+
+        /* If OPTIONAL see if it is there */
+        if (opt) {
+            int exptag;
+            p = *in;
+            if (tag == -1)
+                exptag = it->utype;
+            else
+                exptag = tag;
+            /*
+             * Don't care about anything other than presence of expected tag
+             */
+
+            ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL,
+                                  &p, len, exptag, aclass, 1, ctx);
+            if (!ret) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            if (ret == -1)
+                return -1;
+        }
+
+        /*
+         * This is the old style evil hack IMPLICIT handling: since the
+         * underlying code is expecting a tag and class other than the one
+         * present we change the buffer temporarily then change it back
+         * afterwards. This doesn't and never did work for tags > 30. Yes
+         * this is *horrible* but it is only needed for old style d2i which
+         * will hopefully not be around for much longer. FIXME: should copy
+         * the buffer then modify it so the input buffer can be const: we
+         * should *always* copy because the old style d2i might modify the
+         * buffer.
+         */
+
+        if (tag != -1) {
+            wp = *(unsigned char **)in;
+            imphack = *wp;
+            if (p == NULL) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            *wp = (unsigned char)((*p & V_ASN1_CONSTRUCTED)
+                                  | it->utype);
+        }
+
+        ptmpval = cf->asn1_d2i(pval, in, len);
+
+        if (tag != -1)
+            *wp = imphack;
+
+        if (ptmpval)
+            return 1;
+
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+
+        if (*pval) {
+            /* Free up and zero CHOICE value if initialised */
+            i = asn1_get_choice_selector(pval, it);
+            if ((i >= 0) && (i < it->tcount)) {
+                tt = it->templates + i;
+                pchptr = asn1_get_field_ptr(pval, tt);
+                ASN1_template_free(pchptr, tt);
+                asn1_set_choice_selector(pval, -1, it);
+            }
+        } else if (!ASN1_item_ex_new(pval, it)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+        /* CHOICE type, try each possibility in turn */
+        p = *in;
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            pchptr = asn1_get_field_ptr(pval, tt);
+            /*
+             * We mark field as OPTIONAL so its absence can be recognised.
+             */
+            ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx, depth);
+            /* If field not present, try the next one */
+            if (ret == -1)
+                continue;
+            /* If positive return, read OK, break loop */
+            if (ret > 0)
+                break;
+            /* Otherwise must be an ASN1 parsing error */
+            errtt = tt;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Did we fall off the end without reading anything? */
+        if (i == it->tcount) {
+            /* If OPTIONAL, this is OK */
+            if (opt) {
+                /* Free and zero it */
+                ASN1_item_ex_free(pval, it);
+                return -1;
+            }
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NO_MATCHING_CHOICE_TYPE);
+            goto err;
+        }
+
+        asn1_set_choice_selector(pval, i, it);
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        return 1;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        p = *in;
+        tmplen = len;
+
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            aclass = V_ASN1_UNIVERSAL;
+        }
+        /* Get SEQUENCE length and update len, p */
+        ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst,
+                              &p, len, tag, aclass, opt, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+        if (aux && (aux->flags & ASN1_AFLG_BROKEN)) {
+            len = tmplen - (p - *in);
+            seq_nolen = 1;
+        }
+        /* If indefinite we don't do a length check */
+        else
+            seq_nolen = seq_eoc;
+        if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
+            goto err;
+        }
+
+        if (!*pval && !ASN1_item_ex_new(pval, it)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+
+        /* Free up and zero any ADB found */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            if (tt->flags & ASN1_TFLG_ADB_MASK) {
+                const ASN1_TEMPLATE *seqtt;
+                ASN1_VALUE **pseqval;
+                seqtt = asn1_do_adb(pval, tt, 0);
+                if (seqtt == NULL)
+                    continue;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            }
+        }
+
+        /* Get each field entry */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (seqtt == NULL)
+                goto err;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* Have we ran out of data? */
+            if (!len)
+                break;
+            q = p;
+            if (asn1_check_eoc(&p, len)) {
+                if (!seq_eoc) {
+                    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                seq_eoc = 0;
+                q = p;
+                break;
+            }
+            /*
+             * This determines the OPTIONAL flag value. The field cannot be
+             * omitted if it is the last of a SEQUENCE and there is still
+             * data to be read. This isn't strictly necessary but it
+             * increases efficiency in some cases.
+             */
+            if (i == (it->tcount - 1))
+                isopt = 0;
+            else
+                isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
+            /*
+             * attempt to read in field, allowing each to be OPTIONAL
+             */
+
+            ret = asn1_template_ex_d2i(pseqval, &p, len, seqtt, isopt, ctx,
+                                       depth);
+            if (!ret) {
+                errtt = seqtt;
+                goto err;
+            } else if (ret == -1) {
+                /*
+                 * OPTIONAL component absent. Free and zero the field.
+                 */
+                ASN1_template_free(pseqval, seqtt);
+                continue;
+            }
+            /* Update length */
+            len -= p - q;
+        }
+
+        /* Check for EOC if expecting one */
+        if (seq_eoc && !asn1_check_eoc(&p, len)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+        /* Check all data read */
+        if (!seq_nolen && len) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_SEQUENCE_LENGTH_MISMATCH);
+            goto err;
+        }
+
+        /*
+         * If we get here we've got no more data in the SEQUENCE, however we
+         * may not have read all fields so check all remaining are OPTIONAL
+         * and clear any that are.
+         */
+        for (; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (seqtt == NULL)
+                goto err;
+            if (seqtt->flags & ASN1_TFLG_OPTIONAL) {
+                ASN1_VALUE **pseqval;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            } else {
+                errtt = seqtt;
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_FIELD_MISSING);
+                goto err;
+            }
+        }
+        /* Save encoding */
+        if (!asn1_enc_save(pval, *in, p - *in, it))
+            goto auxerr;
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        return 1;
+
+    default:
+        return 0;
+    }
+ auxerr:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
+ err:
+    if (combine == 0)
+        ASN1_item_ex_free(pval, it);
+    if (errtt)
+        ERR_add_error_data(4, "Field=", errtt->field_name,
+                           ", Type=", it->sname);
+    else
+        ERR_add_error_data(2, "Type=", it->sname);
+    return 0;
+}
+
+int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
+                     const ASN1_ITEM *it,
+                     int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    return asn1_item_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx, 0);
+}
+
+/*
+ * Templates are handled with two separate functions. One handles any
+ * EXPLICIT tag and the other handles the rest.
+ */
+
+static int asn1_template_ex_d2i(ASN1_VALUE **val,
+                                const unsigned char **in, long inlen,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx, int depth)
+{
+    int flags, aclass;
+    int ret;
+    long len;
+    const unsigned char *p, *q;
+    char exp_eoc;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+
+    /* Check if EXPLICIT tag expected */
+    if (flags & ASN1_TFLG_EXPTAG) {
+        char cst;
+        /*
+         * Need to work out amount of data available to the inner content and
+         * where it starts: so read in EXPLICIT header to get the info.
+         */
+        ret = asn1_check_tlen(&len, NULL, NULL, &exp_eoc, &cst,
+                              &p, inlen, tt->tag, aclass, opt, ctx);
+        q = p;
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED);
+            return 0;
+        }
+        /* We've found the field so it can't be OPTIONAL now */
+        ret = asn1_template_noexp_d2i(val, &p, len, tt, 0, ctx, depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        /* We read the field in OK so update length */
+        len -= p - q;
+        if (exp_eoc) {
+            /* If NDEF we must have an EOC here */
+            if (!asn1_check_eoc(&p, len)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+                goto err;
+            }
+        } else {
+            /*
+             * Otherwise we must hit the EXPLICIT tag end or its an error
+             */
+            if (len) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPLICIT_LENGTH_MISMATCH);
+                goto err;
+            }
+        }
+    } else
+        return asn1_template_noexp_d2i(val, in, inlen, tt, opt, ctx, depth);
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
+
+static int asn1_template_noexp_d2i(ASN1_VALUE **val,
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx, int depth)
+{
+    int flags, aclass;
+    int ret;
+    const unsigned char *p;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        int sktag, skaclass;
+        char sk_eoc;
+        /* First work out expected inner tag value */
+        if (flags & ASN1_TFLG_IMPTAG) {
+            sktag = tt->tag;
+            skaclass = aclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (flags & ASN1_TFLG_SET_OF)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+        /* Get the tag */
+        ret = asn1_check_tlen(&len, NULL, NULL, &sk_eoc, NULL,
+                              &p, len, sktag, skaclass, opt, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!*val)
+            *val = (ASN1_VALUE *)sk_new_null();
+        else {
+            /*
+             * We've got a valid STACK: free up any items present
+             */
+            STACK_OF(ASN1_VALUE) *sktmp = (STACK_OF(ASN1_VALUE) *)*val;
+            ASN1_VALUE *vtmp;
+            while (sk_ASN1_VALUE_num(sktmp) > 0) {
+                vtmp = sk_ASN1_VALUE_pop(sktmp);
+                ASN1_item_ex_free(&vtmp, ASN1_ITEM_ptr(tt->item));
+            }
+        }
+
+        if (!*val) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+
+        /* Read as many items as we can */
+        while (len > 0) {
+            ASN1_VALUE *skfield;
+            const unsigned char *q = p;
+            /* See if EOC found */
+            if (asn1_check_eoc(&p, len)) {
+                if (!sk_eoc) {
+                    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                sk_eoc = 0;
+                break;
+            }
+            skfield = NULL;
+             if (!asn1_item_ex_d2i(&skfield, &p, len, ASN1_ITEM_ptr(tt->item),
+                                   -1, 0, 0, ctx, depth)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            len -= p - q;
+            if (!sk_ASN1_VALUE_push((STACK_OF(ASN1_VALUE) *)*val, skfield)) {
+                ASN1_item_ex_free(&skfield, ASN1_ITEM_ptr(tt->item));
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+        }
+        if (sk_eoc) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+    } else if (flags & ASN1_TFLG_IMPTAG) {
+        /* IMPLICIT tagging */
+        ret = asn1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item), tt->tag,
+                               aclass, opt, ctx, depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    } else {
+        /* Nothing special */
+        ret = asn1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item),
+                               -1, tt->flags & ASN1_TFLG_COMBINE, opt, ctx,
+                               depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    }
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
+
+static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
+                                 const unsigned char **in, long inlen,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    int ret = 0, utype;
+    long plen;
+    char cst, inf, free_cont = 0;
+    const unsigned char *p;
+    BUF_MEM buf = {0, NULL, 0 };
+    const unsigned char *cont = NULL;
+    long len;
+    if (!pval) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NULL);
+        return 0;               /* Should never happen */
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        utype = tag;
+        tag = -1;
+    } else
+        utype = it->utype;
+
+    if (utype == V_ASN1_ANY) {
+        /* If type is ANY need to figure out type from tag */
+        unsigned char oclass;
+        if (tag >= 0) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TAGGED_ANY);
+            return 0;
+        }
+        if (opt) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OPTIONAL_ANY);
+            return 0;
+        }
+        p = *in;
+        ret = asn1_check_tlen(NULL, &utype, &oclass, NULL, NULL,
+                              &p, inlen, -1, 0, 0, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (oclass != V_ASN1_UNIVERSAL)
+            utype = V_ASN1_OTHER;
+    }
+    if (tag == -1) {
+        tag = utype;
+        aclass = V_ASN1_UNIVERSAL;
+    }
+    p = *in;
+    /* Check header */
+    ret = asn1_check_tlen(&plen, NULL, NULL, &inf, &cst,
+                          &p, inlen, tag, aclass, opt, ctx);
+    if (!ret) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        return 0;
+    } else if (ret == -1)
+        return -1;
+    ret = 0;
+    /* SEQUENCE, SET and "OTHER" are left in encoded form */
+    if ((utype == V_ASN1_SEQUENCE)
+        || (utype == V_ASN1_SET) || (utype == V_ASN1_OTHER)) {
+        /*
+         * Clear context cache for type OTHER because the auto clear when we
+         * have a exact match wont work
+         */
+        if (utype == V_ASN1_OTHER) {
+            asn1_tlc_clear(ctx);
+        }
+        /* SEQUENCE and SET must be constructed */
+        else if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_CONSTRUCTED);
+            return 0;
+        }
+
+        cont = *in;
+        /* If indefinite length constructed find the real end */
+        if (inf) {
+            if (!asn1_find_end(&p, plen, inf))
+                goto err;
+            len = p - cont;
+        } else {
+            len = p - cont + plen;
+            p += plen;
+        }
+    } else if (cst) {
+        if (utype == V_ASN1_NULL || utype == V_ASN1_BOOLEAN
+            || utype == V_ASN1_OBJECT || utype == V_ASN1_INTEGER
+            || utype == V_ASN1_ENUMERATED) {
+            /* These types only have primitive encodings. */
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_PRIMITIVE);
+            return 0;
+        }
+
+        /* Free any returned 'buf' content */
+        free_cont = 1;
+        /*
+         * Should really check the internal tags are correct but some things
+         * may get this wrong. The relevant specs say that constructed string
+         * types should be OCTET STRINGs internally irrespective of the type.
+         * So instead just check for UNIVERSAL class and ignore the tag.
+         */
+        if (!asn1_collect(&buf, &p, plen, inf, -1, V_ASN1_UNIVERSAL, 0)) {
+            goto err;
+        }
+        len = buf.length;
+        /* Append a final null to string */
+        if (!BUF_MEM_grow_clean(&buf, len + 1)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        buf.data[len] = 0;
+        cont = (const unsigned char *)buf.data;
+    } else {
+        cont = p;
+        len = plen;
+        p += plen;
+    }
+
+    /* We now have content length and type: translate into a structure */
+    /* asn1_ex_c2i may reuse allocated buffer, and so sets free_cont to 0 */
+    if (!asn1_ex_c2i(pval, cont, len, utype, &free_cont, it))
+        goto err;
+
+    *in = p;
+    ret = 1;
+ err:
+    if (free_cont && buf.data)
+        OPENSSL_free(buf.data);
+    return ret;
+}
+
+/* Translate ASN1 content octets into a structure */
+
+int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+                int utype, char *free_cont, const ASN1_ITEM *it)
+{
+    ASN1_VALUE **opval = NULL;
+    ASN1_STRING *stmp;
+    ASN1_TYPE *typ = NULL;
+    int ret = 0;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    ASN1_INTEGER **tint;
+    pf = it->funcs;
+
+    if (pf && pf->prim_c2i)
+        return pf->prim_c2i(pval, cont, len, utype, free_cont, it);
+    /* If ANY type clear type and set pointer to internal value */
+    if (it->utype == V_ASN1_ANY) {
+        if (!*pval) {
+            typ = ASN1_TYPE_new();
+            if (typ == NULL)
+                goto err;
+            *pval = (ASN1_VALUE *)typ;
+        } else
+            typ = (ASN1_TYPE *)*pval;
+
+        if (utype != typ->type)
+            ASN1_TYPE_set(typ, utype, NULL);
+        opval = pval;
+        pval = &typ->value.asn1_value;
+    }
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        if (!c2i_ASN1_OBJECT((ASN1_OBJECT **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_NULL:
+        if (len) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NULL_IS_WRONG_LENGTH);
+            goto err;
+        }
+        *pval = (ASN1_VALUE *)1;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (len != 1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_BOOLEAN_IS_WRONG_LENGTH);
+            goto err;
+        } else {
+            ASN1_BOOLEAN *tbool;
+            tbool = (ASN1_BOOLEAN *)pval;
+            *tbool = *cont;
+        }
+        break;
+
+    case V_ASN1_BIT_STRING:
+        if (!c2i_ASN1_BIT_STRING((ASN1_BIT_STRING **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        tint = (ASN1_INTEGER **)pval;
+        if (!c2i_ASN1_INTEGER(tint, &cont, len))
+            goto err;
+        /* Fixup type to match the expected form */
+        (*tint)->type = utype | ((*tint)->type & V_ASN1_NEG);
+        break;
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_OTHER:
+    case V_ASN1_SET:
+    case V_ASN1_SEQUENCE:
+    default:
+        if (utype == V_ASN1_BMPSTRING && (len & 1)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_BMPSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        if (utype == V_ASN1_UNIVERSALSTRING && (len & 3)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        /* All based on ASN1_STRING and handled the same */
+        if (!*pval) {
+            stmp = ASN1_STRING_type_new(utype);
+            if (!stmp) {
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            *pval = (ASN1_VALUE *)stmp;
+        } else {
+            stmp = (ASN1_STRING *)*pval;
+            stmp->type = utype;
+        }
+        /* If we've already allocated a buffer use it */
+        if (*free_cont) {
+            if (stmp->data)
+                OPENSSL_free(stmp->data);
+            stmp->data = (unsigned char *)cont; /* UGLY CAST! RL */
+            stmp->length = len;
+            *free_cont = 0;
+        } else {
+            if (!ASN1_STRING_set(stmp, cont, len)) {
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                ASN1_STRING_free(stmp);
+                *pval = NULL;
+                goto err;
+            }
+        }
+        break;
+    }
+    /* If ASN1_ANY and NULL type fix up value */
+    if (typ && (utype == V_ASN1_NULL))
+        typ->value.ptr = NULL;
+
+    ret = 1;
+ err:
+    if (!ret) {
+        ASN1_TYPE_free(typ);
+        if (opval)
+            *opval = NULL;
+    }
+    return ret;
+}
+
+/*
+ * This function finds the end of an ASN1 structure when passed its maximum
+ * length, whether it is indefinite length and a pointer to the content. This
+ * is more efficient than calling asn1_collect because it does not recurse on
+ * each indefinite length header.
+ */
+
+static int asn1_find_end(const unsigned char **in, long len, char inf)
+{
+    int expected_eoc;
+    long plen;
+    const unsigned char *p = *in, *q;
+    /* If not indefinite length constructed just add length */
+    if (inf == 0) {
+        *in += len;
+        return 1;
+    }
+    expected_eoc = 1;
+    /*
+     * Indefinite length constructed form. Find the end when enough EOCs are
+     * found. If more indefinite length constructed headers are encountered
+     * increment the expected eoc count otherwise just skip to the end of the
+     * data.
+     */
+    while (len > 0) {
+        if (asn1_check_eoc(&p, len)) {
+            expected_eoc--;
+            if (expected_eoc == 0)
+                break;
+            len -= 2;
+            continue;
+        }
+        q = p;
+        /* Just read in a header: only care about the length */
+        if (!asn1_check_tlen(&plen, NULL, NULL, &inf, NULL, &p, len,
+                             -1, 0, 0, NULL)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (inf)
+            expected_eoc++;
+        else
+            p += plen;
+        len -= p - q;
+    }
+    if (expected_eoc) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
+
+/*
+ * This function collects the asn1 data from a constructred string type into
+ * a buffer. The values of 'in' and 'len' should refer to the contents of the
+ * constructed type and 'inf' should be set if it is indefinite length.
+ */
+
+#ifndef ASN1_MAX_STRING_NEST
+/*
+ * This determines how many levels of recursion are permitted in ASN1 string
+ * types. If it is not limited stack overflows can occur. If set to zero no
+ * recursion is allowed at all. Although zero should be adequate examples
+ * exist that require a value of 1. So 5 should be more than enough.
+ */
+# define ASN1_MAX_STRING_NEST 5
+#endif
+
+static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
+                        char inf, int tag, int aclass, int depth)
+{
+    const unsigned char *p, *q;
+    long plen;
+    char cst, ininf;
+    p = *in;
+    inf &= 1;
+    /*
+     * If no buffer and not indefinite length constructed just pass over the
+     * encoded data
+     */
+    if (!buf && !inf) {
+        *in += len;
+        return 1;
+    }
+    while (len > 0) {
+        q = p;
+        /* Check for EOC */
+        if (asn1_check_eoc(&p, len)) {
+            /*
+             * EOC is illegal outside indefinite length constructed form
+             */
+            if (!inf) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                return 0;
+            }
+            inf = 0;
+            break;
+        }
+
+        if (!asn1_check_tlen(&plen, NULL, NULL, &ininf, &cst, &p,
+                             len, tag, aclass, 0, NULL)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+
+        /* If indefinite length constructed update max length */
+        if (cst) {
+            if (depth >= ASN1_MAX_STRING_NEST) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_STRING);
+                return 0;
+            }
+            if (!asn1_collect(buf, &p, plen, ininf, tag, aclass, depth + 1))
+                return 0;
+        } else if (plen && !collect_data(buf, &p, plen))
+            return 0;
+        len -= p - q;
+    }
+    if (inf) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
+
+static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen)
+{
+    int len;
+    if (buf) {
+        len = buf->length;
+        if (!BUF_MEM_grow_clean(buf, len + plen)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        OPENSSL_memcpy(buf->data + len, *p, plen);
+    }
+    *p += plen;
+    return 1;
+}
+
+/* Check for ASN1 EOC and swallow it if found */
+
+static int asn1_check_eoc(const unsigned char **in, long len)
+{
+    const unsigned char *p;
+    if (len < 2)
+        return 0;
+    p = *in;
+    if (!p[0] && !p[1]) {
+        *in += 2;
+        return 1;
+    }
+    return 0;
+}
+
+/*
+ * Check an ASN1 tag and length: a bit like ASN1_get_object but it sets the
+ * length for indefinite length constructed form, we don't know the exact
+ * length but we can set an upper bound to the amount of data available minus
+ * the header length just read.
+ */
+
+static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx)
+{
+    int i;
+    int ptag, pclass;
+    long plen;
+    const unsigned char *p, *q;
+    p = *in;
+    q = p;
+
+    if (ctx && ctx->valid) {
+        i = ctx->ret;
+        plen = ctx->plen;
+        pclass = ctx->pclass;
+        ptag = ctx->ptag;
+        p += ctx->hdrlen;
+    } else {
+        i = ASN1_get_object(&p, &plen, &ptag, &pclass, len);
+        if (ctx) {
+            ctx->ret = i;
+            ctx->plen = plen;
+            ctx->pclass = pclass;
+            ctx->ptag = ptag;
+            ctx->hdrlen = p - q;
+            ctx->valid = 1;
+            /*
+             * If definite length, and no error, length + header can't exceed
+             * total amount of data available.
+             */
+            if (!(i & 0x81) && ((plen + ctx->hdrlen) > len)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+                asn1_tlc_clear(ctx);
+                return 0;
+            }
+        }
+    }
+
+    if (i & 0x80) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BAD_OBJECT_HEADER);
+        asn1_tlc_clear(ctx);
+        return 0;
+    }
+    if (exptag >= 0) {
+        if ((exptag != ptag) || (expclass != pclass)) {
+            /*
+             * If type is OPTIONAL, not an error: indicate missing type.
+             */
+            if (opt)
+                return -1;
+            asn1_tlc_clear(ctx);
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_TAG);
+            return 0;
+        }
+        /*
+         * We have a tag and class match: assume we are going to do something
+         * with it
+         */
+        asn1_tlc_clear(ctx);
+    }
+
+    if (i & 1)
+        plen = len - (p - q);
+
+    if (inf)
+        *inf = i & 1;
+
+    if (cst)
+        *cst = i & V_ASN1_CONSTRUCTED;
+
+    if (olen)
+        *olen = plen;
+
+    if (oclass)
+        *oclass = pclass;
+
+    if (otag)
+        *otag = ptag;
+
+    *in = p;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c.grpc_back
new file mode 100644
index 0000000..32aba0b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_dec.c.grpc_back	
@@ -0,0 +1,1244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+/*
+ * Constructed types with a recursive definition (such as can be found in PKCS7)
+ * could eventually exceed the stack given malicious input with excessive
+ * recursion. Therefore we limit the stack depth. This is the maximum number of
+ * recursive invocations of asn1_item_embed_d2i().
+ */
+#define ASN1_MAX_CONSTRUCTED_NEST 30
+
+static int asn1_check_eoc(const unsigned char **in, long len);
+static int asn1_find_end(const unsigned char **in, long len, char inf);
+
+static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
+                        char inf, int tag, int aclass, int depth);
+
+static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen);
+
+static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx);
+
+static int asn1_template_ex_d2i(ASN1_VALUE **pval,
+                                const unsigned char **in, long len,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx, int depth);
+static int asn1_template_noexp_d2i(ASN1_VALUE **val,
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx, int depth);
+static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
+                                 const unsigned char **in, long len,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt,
+                                 ASN1_TLC *ctx);
+
+/* Table to convert tags to bit values, used for MSTRING type */
+static const unsigned long tag2bit[32] = {
+    0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
+    B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN, /* tags 4- 7 */
+    B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, /* tags
+                                                                     * 8-11 */
+    B_ASN1_UTF8STRING, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, /* tags
+                                                                        * 12-15
+                                                                        */
+    B_ASN1_SEQUENCE, 0, B_ASN1_NUMERICSTRING, B_ASN1_PRINTABLESTRING, /* tags
+                                                                       * 16-19
+                                                                       */
+    B_ASN1_T61STRING, B_ASN1_VIDEOTEXSTRING, B_ASN1_IA5STRING, /* tags 20-22 */
+    B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME, /* tags 23-24 */
+    B_ASN1_GRAPHICSTRING, B_ASN1_ISO64STRING, B_ASN1_GENERALSTRING, /* tags
+                                                                     * 25-27 */
+    B_ASN1_UNIVERSALSTRING, B_ASN1_UNKNOWN, B_ASN1_BMPSTRING, B_ASN1_UNKNOWN, /* tags
+                                                                               * 28-31
+                                                                               */
+};
+
+unsigned long ASN1_tag2bit(int tag)
+{
+    if ((tag < 0) || (tag > 30))
+        return 0;
+    return tag2bit[tag];
+}
+
+/* Macro to initialize and invalidate the cache */
+
+#define asn1_tlc_clear(c)       if (c) (c)->valid = 0
+/* Version to avoid compiler warning about 'c' always non-NULL */
+#define asn1_tlc_clear_nc(c)    (c)->valid = 0
+
+/*
+ * Decode an ASN1 item, this currently behaves just like a standard 'd2i'
+ * function. 'in' points to a buffer to read the data from, in future we
+ * will have more advanced versions that can input data a piece at a time and
+ * this will simply be a special case.
+ */
+
+ASN1_VALUE *ASN1_item_d2i(ASN1_VALUE **pval,
+                          const unsigned char **in, long len,
+                          const ASN1_ITEM *it)
+{
+    ASN1_TLC c;
+    ASN1_VALUE *ptmpval = NULL;
+    if (!pval)
+        pval = &ptmpval;
+    asn1_tlc_clear_nc(&c);
+    if (ASN1_item_ex_d2i(pval, in, len, it, -1, 0, 0, &c) > 0)
+        return *pval;
+    return NULL;
+}
+
+/*
+ * Decode an item, taking care of IMPLICIT tagging, if any. If 'opt' set and
+ * tag mismatch return -1 to handle OPTIONAL
+ */
+
+static int asn1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in,
+                            long len, const ASN1_ITEM *it, int tag, int aclass,
+                            char opt, ASN1_TLC *ctx, int depth)
+{
+    const ASN1_TEMPLATE *tt, *errtt = NULL;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    const unsigned char *p = NULL, *q;
+    unsigned char *wp = NULL;   /* BIG FAT WARNING! BREAKS CONST WHERE USED */
+    unsigned char imphack = 0, oclass;
+    char seq_eoc, seq_nolen, cst, isopt;
+    long tmplen;
+    int i;
+    int otag;
+    int ret = 0;
+    ASN1_VALUE **pchptr, *ptmpval;
+    int combine = aclass & ASN1_TFLG_COMBINE;
+    aclass &= ~ASN1_TFLG_COMBINE;
+    if (!pval)
+        return 0;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+    /*
+     * Bound |len| to comfortably fit in an int. Lengths in this module often
+     * switch between int and long without overflow checks.
+     */
+    if (len > INT_MAX/2) {
+        len = INT_MAX/2;
+    }
+
+    if (++depth > ASN1_MAX_CONSTRUCTED_NEST) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_TOO_DEEP);
+        goto err;
+    }
+
+    switch (it->itype) {
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates) {
+            /*
+             * tagging or OPTIONAL is currently illegal on an item template
+             * because the flags can't get passed down. In practice this
+             * isn't a problem: we include the relevant flags from the item
+             * template in the template itself.
+             */
+            if ((tag != -1) || opt) {
+                OPENSSL_PUT_ERROR(ASN1,
+                                  ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
+                goto err;
+            }
+            return asn1_template_ex_d2i(pval, in, len,
+                                        it->templates, opt, ctx, depth);
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it,
+                                     tag, aclass, opt, ctx);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        p = *in;
+        /* Just read in tag and class */
+        ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
+                              &p, len, -1, 0, 1, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Must be UNIVERSAL class */
+        if (oclass != V_ASN1_UNIVERSAL) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MSTRING_NOT_UNIVERSAL);
+            goto err;
+        }
+        /* Check tag matches bit map */
+        if (!(ASN1_tag2bit(otag) & it->utype)) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MSTRING_WRONG_TAG);
+            goto err;
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it, otag, 0, 0, ctx);
+
+    case ASN1_ITYPE_EXTERN:
+        /* Use new style d2i */
+        ef = it->funcs;
+        return ef->asn1_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx);
+
+    case ASN1_ITYPE_COMPAT:
+        /* we must resort to old style evil hackery */
+        cf = it->funcs;
+
+        /* If OPTIONAL see if it is there */
+        if (opt) {
+            int exptag;
+            p = *in;
+            if (tag == -1)
+                exptag = it->utype;
+            else
+                exptag = tag;
+            /*
+             * Don't care about anything other than presence of expected tag
+             */
+
+            ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL,
+                                  &p, len, exptag, aclass, 1, ctx);
+            if (!ret) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            if (ret == -1)
+                return -1;
+        }
+
+        /*
+         * This is the old style evil hack IMPLICIT handling: since the
+         * underlying code is expecting a tag and class other than the one
+         * present we change the buffer temporarily then change it back
+         * afterwards. This doesn't and never did work for tags > 30. Yes
+         * this is *horrible* but it is only needed for old style d2i which
+         * will hopefully not be around for much longer. FIXME: should copy
+         * the buffer then modify it so the input buffer can be const: we
+         * should *always* copy because the old style d2i might modify the
+         * buffer.
+         */
+
+        if (tag != -1) {
+            wp = *(unsigned char **)in;
+            imphack = *wp;
+            if (p == NULL) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            *wp = (unsigned char)((*p & V_ASN1_CONSTRUCTED)
+                                  | it->utype);
+        }
+
+        ptmpval = cf->asn1_d2i(pval, in, len);
+
+        if (tag != -1)
+            *wp = imphack;
+
+        if (ptmpval)
+            return 1;
+
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        goto err;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+
+        if (*pval) {
+            /* Free up and zero CHOICE value if initialised */
+            i = asn1_get_choice_selector(pval, it);
+            if ((i >= 0) && (i < it->tcount)) {
+                tt = it->templates + i;
+                pchptr = asn1_get_field_ptr(pval, tt);
+                ASN1_template_free(pchptr, tt);
+                asn1_set_choice_selector(pval, -1, it);
+            }
+        } else if (!ASN1_item_ex_new(pval, it)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+        /* CHOICE type, try each possibility in turn */
+        p = *in;
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            pchptr = asn1_get_field_ptr(pval, tt);
+            /*
+             * We mark field as OPTIONAL so its absence can be recognised.
+             */
+            ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx, depth);
+            /* If field not present, try the next one */
+            if (ret == -1)
+                continue;
+            /* If positive return, read OK, break loop */
+            if (ret > 0)
+                break;
+            /* Otherwise must be an ASN1 parsing error */
+            errtt = tt;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Did we fall off the end without reading anything? */
+        if (i == it->tcount) {
+            /* If OPTIONAL, this is OK */
+            if (opt) {
+                /* Free and zero it */
+                ASN1_item_ex_free(pval, it);
+                return -1;
+            }
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NO_MATCHING_CHOICE_TYPE);
+            goto err;
+        }
+
+        asn1_set_choice_selector(pval, i, it);
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        return 1;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        p = *in;
+        tmplen = len;
+
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            aclass = V_ASN1_UNIVERSAL;
+        }
+        /* Get SEQUENCE length and update len, p */
+        ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst,
+                              &p, len, tag, aclass, opt, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+        if (aux && (aux->flags & ASN1_AFLG_BROKEN)) {
+            len = tmplen - (p - *in);
+            seq_nolen = 1;
+        }
+        /* If indefinite we don't do a length check */
+        else
+            seq_nolen = seq_eoc;
+        if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
+            goto err;
+        }
+
+        if (!*pval && !ASN1_item_ex_new(pval, it)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+
+        /* Free up and zero any ADB found */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            if (tt->flags & ASN1_TFLG_ADB_MASK) {
+                const ASN1_TEMPLATE *seqtt;
+                ASN1_VALUE **pseqval;
+                seqtt = asn1_do_adb(pval, tt, 0);
+                if (seqtt == NULL)
+                    continue;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            }
+        }
+
+        /* Get each field entry */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (seqtt == NULL)
+                goto err;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* Have we ran out of data? */
+            if (!len)
+                break;
+            q = p;
+            if (asn1_check_eoc(&p, len)) {
+                if (!seq_eoc) {
+                    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                seq_eoc = 0;
+                q = p;
+                break;
+            }
+            /*
+             * This determines the OPTIONAL flag value. The field cannot be
+             * omitted if it is the last of a SEQUENCE and there is still
+             * data to be read. This isn't strictly necessary but it
+             * increases efficiency in some cases.
+             */
+            if (i == (it->tcount - 1))
+                isopt = 0;
+            else
+                isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
+            /*
+             * attempt to read in field, allowing each to be OPTIONAL
+             */
+
+            ret = asn1_template_ex_d2i(pseqval, &p, len, seqtt, isopt, ctx,
+                                       depth);
+            if (!ret) {
+                errtt = seqtt;
+                goto err;
+            } else if (ret == -1) {
+                /*
+                 * OPTIONAL component absent. Free and zero the field.
+                 */
+                ASN1_template_free(pseqval, seqtt);
+                continue;
+            }
+            /* Update length */
+            len -= p - q;
+        }
+
+        /* Check for EOC if expecting one */
+        if (seq_eoc && !asn1_check_eoc(&p, len)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+        /* Check all data read */
+        if (!seq_nolen && len) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_SEQUENCE_LENGTH_MISMATCH);
+            goto err;
+        }
+
+        /*
+         * If we get here we've got no more data in the SEQUENCE, however we
+         * may not have read all fields so check all remaining are OPTIONAL
+         * and clear any that are.
+         */
+        for (; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (seqtt == NULL)
+                goto err;
+            if (seqtt->flags & ASN1_TFLG_OPTIONAL) {
+                ASN1_VALUE **pseqval;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            } else {
+                errtt = seqtt;
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_FIELD_MISSING);
+                goto err;
+            }
+        }
+        /* Save encoding */
+        if (!asn1_enc_save(pval, *in, p - *in, it))
+            goto auxerr;
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        *in = p;
+        return 1;
+
+    default:
+        return 0;
+    }
+ auxerr:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
+ err:
+    if (combine == 0)
+        ASN1_item_ex_free(pval, it);
+    if (errtt)
+        ERR_add_error_data(4, "Field=", errtt->field_name,
+                           ", Type=", it->sname);
+    else
+        ERR_add_error_data(2, "Type=", it->sname);
+    return 0;
+}
+
+int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
+                     const ASN1_ITEM *it,
+                     int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    return asn1_item_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx, 0);
+}
+
+/*
+ * Templates are handled with two separate functions. One handles any
+ * EXPLICIT tag and the other handles the rest.
+ */
+
+static int asn1_template_ex_d2i(ASN1_VALUE **val,
+                                const unsigned char **in, long inlen,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx, int depth)
+{
+    int flags, aclass;
+    int ret;
+    long len;
+    const unsigned char *p, *q;
+    char exp_eoc;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+
+    /* Check if EXPLICIT tag expected */
+    if (flags & ASN1_TFLG_EXPTAG) {
+        char cst;
+        /*
+         * Need to work out amount of data available to the inner content and
+         * where it starts: so read in EXPLICIT header to get the info.
+         */
+        ret = asn1_check_tlen(&len, NULL, NULL, &exp_eoc, &cst,
+                              &p, inlen, tt->tag, aclass, opt, ctx);
+        q = p;
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED);
+            return 0;
+        }
+        /* We've found the field so it can't be OPTIONAL now */
+        ret = asn1_template_noexp_d2i(val, &p, len, tt, 0, ctx, depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        /* We read the field in OK so update length */
+        len -= p - q;
+        if (exp_eoc) {
+            /* If NDEF we must have an EOC here */
+            if (!asn1_check_eoc(&p, len)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+                goto err;
+            }
+        } else {
+            /*
+             * Otherwise we must hit the EXPLICIT tag end or its an error
+             */
+            if (len) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPLICIT_LENGTH_MISMATCH);
+                goto err;
+            }
+        }
+    } else
+        return asn1_template_noexp_d2i(val, in, inlen, tt, opt, ctx, depth);
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
+
+static int asn1_template_noexp_d2i(ASN1_VALUE **val,
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx, int depth)
+{
+    int flags, aclass;
+    int ret;
+    const unsigned char *p;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        int sktag, skaclass;
+        char sk_eoc;
+        /* First work out expected inner tag value */
+        if (flags & ASN1_TFLG_IMPTAG) {
+            sktag = tt->tag;
+            skaclass = aclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (flags & ASN1_TFLG_SET_OF)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+        /* Get the tag */
+        ret = asn1_check_tlen(&len, NULL, NULL, &sk_eoc, NULL,
+                              &p, len, sktag, skaclass, opt, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!*val)
+            *val = (ASN1_VALUE *)sk_new_null();
+        else {
+            /*
+             * We've got a valid STACK: free up any items present
+             */
+            STACK_OF(ASN1_VALUE) *sktmp = (STACK_OF(ASN1_VALUE) *)*val;
+            ASN1_VALUE *vtmp;
+            while (sk_ASN1_VALUE_num(sktmp) > 0) {
+                vtmp = sk_ASN1_VALUE_pop(sktmp);
+                ASN1_item_ex_free(&vtmp, ASN1_ITEM_ptr(tt->item));
+            }
+        }
+
+        if (!*val) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+
+        /* Read as many items as we can */
+        while (len > 0) {
+            ASN1_VALUE *skfield;
+            const unsigned char *q = p;
+            /* See if EOC found */
+            if (asn1_check_eoc(&p, len)) {
+                if (!sk_eoc) {
+                    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                sk_eoc = 0;
+                break;
+            }
+            skfield = NULL;
+             if (!asn1_item_ex_d2i(&skfield, &p, len, ASN1_ITEM_ptr(tt->item),
+                                   -1, 0, 0, ctx, depth)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            len -= p - q;
+            if (!sk_ASN1_VALUE_push((STACK_OF(ASN1_VALUE) *)*val, skfield)) {
+                ASN1_item_ex_free(&skfield, ASN1_ITEM_ptr(tt->item));
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+        }
+        if (sk_eoc) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+    } else if (flags & ASN1_TFLG_IMPTAG) {
+        /* IMPLICIT tagging */
+        ret = asn1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item), tt->tag,
+                               aclass, opt, ctx, depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    } else {
+        /* Nothing special */
+        ret = asn1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item),
+                               -1, tt->flags & ASN1_TFLG_COMBINE, opt, ctx,
+                               depth);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    }
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
+
+static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
+                                 const unsigned char **in, long inlen,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    int ret = 0, utype;
+    long plen;
+    char cst, inf, free_cont = 0;
+    const unsigned char *p;
+    BUF_MEM buf = {0, NULL, 0 };
+    const unsigned char *cont = NULL;
+    long len;
+    if (!pval) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NULL);
+        return 0;               /* Should never happen */
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        utype = tag;
+        tag = -1;
+    } else
+        utype = it->utype;
+
+    if (utype == V_ASN1_ANY) {
+        /* If type is ANY need to figure out type from tag */
+        unsigned char oclass;
+        if (tag >= 0) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TAGGED_ANY);
+            return 0;
+        }
+        if (opt) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OPTIONAL_ANY);
+            return 0;
+        }
+        p = *in;
+        ret = asn1_check_tlen(NULL, &utype, &oclass, NULL, NULL,
+                              &p, inlen, -1, 0, 0, ctx);
+        if (!ret) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (oclass != V_ASN1_UNIVERSAL)
+            utype = V_ASN1_OTHER;
+    }
+    if (tag == -1) {
+        tag = utype;
+        aclass = V_ASN1_UNIVERSAL;
+    }
+    p = *in;
+    /* Check header */
+    ret = asn1_check_tlen(&plen, NULL, NULL, &inf, &cst,
+                          &p, inlen, tag, aclass, opt, ctx);
+    if (!ret) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+        return 0;
+    } else if (ret == -1)
+        return -1;
+    ret = 0;
+    /* SEQUENCE, SET and "OTHER" are left in encoded form */
+    if ((utype == V_ASN1_SEQUENCE)
+        || (utype == V_ASN1_SET) || (utype == V_ASN1_OTHER)) {
+        /*
+         * Clear context cache for type OTHER because the auto clear when we
+         * have a exact match wont work
+         */
+        if (utype == V_ASN1_OTHER) {
+            asn1_tlc_clear(ctx);
+        }
+        /* SEQUENCE and SET must be constructed */
+        else if (!cst) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_CONSTRUCTED);
+            return 0;
+        }
+
+        cont = *in;
+        /* If indefinite length constructed find the real end */
+        if (inf) {
+            if (!asn1_find_end(&p, plen, inf))
+                goto err;
+            len = p - cont;
+        } else {
+            len = p - cont + plen;
+            p += plen;
+        }
+    } else if (cst) {
+        if (utype == V_ASN1_NULL || utype == V_ASN1_BOOLEAN
+            || utype == V_ASN1_OBJECT || utype == V_ASN1_INTEGER
+            || utype == V_ASN1_ENUMERATED) {
+            /* These types only have primitive encodings. */
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_PRIMITIVE);
+            return 0;
+        }
+
+        /* Free any returned 'buf' content */
+        free_cont = 1;
+        /*
+         * Should really check the internal tags are correct but some things
+         * may get this wrong. The relevant specs say that constructed string
+         * types should be OCTET STRINGs internally irrespective of the type.
+         * So instead just check for UNIVERSAL class and ignore the tag.
+         */
+        if (!asn1_collect(&buf, &p, plen, inf, -1, V_ASN1_UNIVERSAL, 0)) {
+            goto err;
+        }
+        len = buf.length;
+        /* Append a final null to string */
+        if (!BUF_MEM_grow_clean(&buf, len + 1)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        buf.data[len] = 0;
+        cont = (const unsigned char *)buf.data;
+    } else {
+        cont = p;
+        len = plen;
+        p += plen;
+    }
+
+    /* We now have content length and type: translate into a structure */
+    /* asn1_ex_c2i may reuse allocated buffer, and so sets free_cont to 0 */
+    if (!asn1_ex_c2i(pval, cont, len, utype, &free_cont, it))
+        goto err;
+
+    *in = p;
+    ret = 1;
+ err:
+    if (free_cont && buf.data)
+        OPENSSL_free(buf.data);
+    return ret;
+}
+
+/* Translate ASN1 content octets into a structure */
+
+int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+                int utype, char *free_cont, const ASN1_ITEM *it)
+{
+    ASN1_VALUE **opval = NULL;
+    ASN1_STRING *stmp;
+    ASN1_TYPE *typ = NULL;
+    int ret = 0;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    ASN1_INTEGER **tint;
+    pf = it->funcs;
+
+    if (pf && pf->prim_c2i)
+        return pf->prim_c2i(pval, cont, len, utype, free_cont, it);
+    /* If ANY type clear type and set pointer to internal value */
+    if (it->utype == V_ASN1_ANY) {
+        if (!*pval) {
+            typ = ASN1_TYPE_new();
+            if (typ == NULL)
+                goto err;
+            *pval = (ASN1_VALUE *)typ;
+        } else
+            typ = (ASN1_TYPE *)*pval;
+
+        if (utype != typ->type)
+            ASN1_TYPE_set(typ, utype, NULL);
+        opval = pval;
+        pval = &typ->value.asn1_value;
+    }
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        if (!c2i_ASN1_OBJECT((ASN1_OBJECT **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_NULL:
+        if (len) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NULL_IS_WRONG_LENGTH);
+            goto err;
+        }
+        *pval = (ASN1_VALUE *)1;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (len != 1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_BOOLEAN_IS_WRONG_LENGTH);
+            goto err;
+        } else {
+            ASN1_BOOLEAN *tbool;
+            tbool = (ASN1_BOOLEAN *)pval;
+            *tbool = *cont;
+        }
+        break;
+
+    case V_ASN1_BIT_STRING:
+        if (!c2i_ASN1_BIT_STRING((ASN1_BIT_STRING **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        tint = (ASN1_INTEGER **)pval;
+        if (!c2i_ASN1_INTEGER(tint, &cont, len))
+            goto err;
+        /* Fixup type to match the expected form */
+        (*tint)->type = utype | ((*tint)->type & V_ASN1_NEG);
+        break;
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_OTHER:
+    case V_ASN1_SET:
+    case V_ASN1_SEQUENCE:
+    default:
+        if (utype == V_ASN1_BMPSTRING && (len & 1)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_BMPSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        if (utype == V_ASN1_UNIVERSALSTRING && (len & 3)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        /* All based on ASN1_STRING and handled the same */
+        if (!*pval) {
+            stmp = ASN1_STRING_type_new(utype);
+            if (!stmp) {
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            *pval = (ASN1_VALUE *)stmp;
+        } else {
+            stmp = (ASN1_STRING *)*pval;
+            stmp->type = utype;
+        }
+        /* If we've already allocated a buffer use it */
+        if (*free_cont) {
+            if (stmp->data)
+                OPENSSL_free(stmp->data);
+            stmp->data = (unsigned char *)cont; /* UGLY CAST! RL */
+            stmp->length = len;
+            *free_cont = 0;
+        } else {
+            if (!ASN1_STRING_set(stmp, cont, len)) {
+                OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+                ASN1_STRING_free(stmp);
+                *pval = NULL;
+                goto err;
+            }
+        }
+        break;
+    }
+    /* If ASN1_ANY and NULL type fix up value */
+    if (typ && (utype == V_ASN1_NULL))
+        typ->value.ptr = NULL;
+
+    ret = 1;
+ err:
+    if (!ret) {
+        ASN1_TYPE_free(typ);
+        if (opval)
+            *opval = NULL;
+    }
+    return ret;
+}
+
+/*
+ * This function finds the end of an ASN1 structure when passed its maximum
+ * length, whether it is indefinite length and a pointer to the content. This
+ * is more efficient than calling asn1_collect because it does not recurse on
+ * each indefinite length header.
+ */
+
+static int asn1_find_end(const unsigned char **in, long len, char inf)
+{
+    int expected_eoc;
+    long plen;
+    const unsigned char *p = *in, *q;
+    /* If not indefinite length constructed just add length */
+    if (inf == 0) {
+        *in += len;
+        return 1;
+    }
+    expected_eoc = 1;
+    /*
+     * Indefinite length constructed form. Find the end when enough EOCs are
+     * found. If more indefinite length constructed headers are encountered
+     * increment the expected eoc count otherwise just skip to the end of the
+     * data.
+     */
+    while (len > 0) {
+        if (asn1_check_eoc(&p, len)) {
+            expected_eoc--;
+            if (expected_eoc == 0)
+                break;
+            len -= 2;
+            continue;
+        }
+        q = p;
+        /* Just read in a header: only care about the length */
+        if (!asn1_check_tlen(&plen, NULL, NULL, &inf, NULL, &p, len,
+                             -1, 0, 0, NULL)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (inf)
+            expected_eoc++;
+        else
+            p += plen;
+        len -= p - q;
+    }
+    if (expected_eoc) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
+
+/*
+ * This function collects the asn1 data from a constructred string type into
+ * a buffer. The values of 'in' and 'len' should refer to the contents of the
+ * constructed type and 'inf' should be set if it is indefinite length.
+ */
+
+#ifndef ASN1_MAX_STRING_NEST
+/*
+ * This determines how many levels of recursion are permitted in ASN1 string
+ * types. If it is not limited stack overflows can occur. If set to zero no
+ * recursion is allowed at all. Although zero should be adequate examples
+ * exist that require a value of 1. So 5 should be more than enough.
+ */
+# define ASN1_MAX_STRING_NEST 5
+#endif
+
+static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
+                        char inf, int tag, int aclass, int depth)
+{
+    const unsigned char *p, *q;
+    long plen;
+    char cst, ininf;
+    p = *in;
+    inf &= 1;
+    /*
+     * If no buffer and not indefinite length constructed just pass over the
+     * encoded data
+     */
+    if (!buf && !inf) {
+        *in += len;
+        return 1;
+    }
+    while (len > 0) {
+        q = p;
+        /* Check for EOC */
+        if (asn1_check_eoc(&p, len)) {
+            /*
+             * EOC is illegal outside indefinite length constructed form
+             */
+            if (!inf) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNEXPECTED_EOC);
+                return 0;
+            }
+            inf = 0;
+            break;
+        }
+
+        if (!asn1_check_tlen(&plen, NULL, NULL, &ininf, &cst, &p,
+                             len, tag, aclass, 0, NULL)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+
+        /* If indefinite length constructed update max length */
+        if (cst) {
+            if (depth >= ASN1_MAX_STRING_NEST) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_STRING);
+                return 0;
+            }
+            if (!asn1_collect(buf, &p, plen, ininf, tag, aclass, depth + 1))
+                return 0;
+        } else if (plen && !collect_data(buf, &p, plen))
+            return 0;
+        len -= p - q;
+    }
+    if (inf) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
+
+static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen)
+{
+    int len;
+    if (buf) {
+        len = buf->length;
+        if (!BUF_MEM_grow_clean(buf, len + plen)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        OPENSSL_memcpy(buf->data + len, *p, plen);
+    }
+    *p += plen;
+    return 1;
+}
+
+/* Check for ASN1 EOC and swallow it if found */
+
+static int asn1_check_eoc(const unsigned char **in, long len)
+{
+    const unsigned char *p;
+    if (len < 2)
+        return 0;
+    p = *in;
+    if (!p[0] && !p[1]) {
+        *in += 2;
+        return 1;
+    }
+    return 0;
+}
+
+/*
+ * Check an ASN1 tag and length: a bit like ASN1_get_object but it sets the
+ * length for indefinite length constructed form, we don't know the exact
+ * length but we can set an upper bound to the amount of data available minus
+ * the header length just read.
+ */
+
+static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx)
+{
+    int i;
+    int ptag, pclass;
+    long plen;
+    const unsigned char *p, *q;
+    p = *in;
+    q = p;
+
+    if (ctx && ctx->valid) {
+        i = ctx->ret;
+        plen = ctx->plen;
+        pclass = ctx->pclass;
+        ptag = ctx->ptag;
+        p += ctx->hdrlen;
+    } else {
+        i = ASN1_get_object(&p, &plen, &ptag, &pclass, len);
+        if (ctx) {
+            ctx->ret = i;
+            ctx->plen = plen;
+            ctx->pclass = pclass;
+            ctx->ptag = ptag;
+            ctx->hdrlen = p - q;
+            ctx->valid = 1;
+            /*
+             * If definite length, and no error, length + header can't exceed
+             * total amount of data available.
+             */
+            if (!(i & 0x81) && ((plen + ctx->hdrlen) > len)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+                asn1_tlc_clear(ctx);
+                return 0;
+            }
+        }
+    }
+
+    if (i & 0x80) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_BAD_OBJECT_HEADER);
+        asn1_tlc_clear(ctx);
+        return 0;
+    }
+    if (exptag >= 0) {
+        if ((exptag != ptag) || (expclass != pclass)) {
+            /*
+             * If type is OPTIONAL, not an error: indicate missing type.
+             */
+            if (opt)
+                return -1;
+            asn1_tlc_clear(ctx);
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_TAG);
+            return 0;
+        }
+        /*
+         * We have a tag and class match: assume we are going to do something
+         * with it
+         */
+        asn1_tlc_clear(ctx);
+    }
+
+    if (i & 1)
+        plen = len - (p - q);
+
+    if (inf)
+        *inf = i & 1;
+
+    if (cst)
+        *cst = i & V_ASN1_CONSTRUCTED;
+
+    if (olen)
+        *olen = plen;
+
+    if (oclass)
+        *oclass = pclass;
+
+    if (otag)
+        *otag = ptag;
+
+    *in = p;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c
new file mode 100644
index 0000000..5242ace
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c	
@@ -0,0 +1,664 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass);
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass);
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int aclass);
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags);
+
+/*
+ * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use
+ * indefinite length constructed encoding, where appropriate
+ */
+
+int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
+                       const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
+}
+
+int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, 0);
+}
+
+/*
+ * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out'
+ * points to a buffer to output the data to. The new i2d has one additional
+ * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is
+ * allocated and populated with the encoding.
+ */
+
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags)
+{
+    if (out && !*out) {
+        unsigned char *p, *buf;
+        int len;
+        len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
+        if (len <= 0)
+            return len;
+        buf = OPENSSL_malloc(len);
+        if (!buf)
+            return -1;
+        p = buf;
+        ASN1_item_ex_i2d(&val, &p, it, -1, flags);
+        *out = buf;
+        return len;
+    }
+
+    return ASN1_item_ex_i2d(&val, out, it, -1, flags);
+}
+
+/*
+ * Encode an item, taking care of IMPLICIT tagging (if any). This function
+ * performs the normal item handling: it can be used in external types.
+ */
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                     const ASN1_ITEM *it, int tag, int aclass)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    unsigned char *p = NULL;
+    int i, seqcontlen, seqlen, ndef = 1;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb = 0;
+
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return 0;
+
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            return asn1_template_ex_i2d(pval, out, it->templates,
+                                        tag, aclass);
+        return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            const ASN1_TEMPLATE *chtt;
+            chtt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, chtt);
+            return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass);
+        }
+        /* Fixme: error condition if selector out of range */
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        /* If new style i2d it does all the work */
+        ef = it->funcs;
+        return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
+
+    case ASN1_ITYPE_COMPAT:
+        /* old style hackery... */
+        cf = it->funcs;
+        if (out)
+            p = *out;
+        i = cf->asn1_i2d(*pval, out);
+        /*
+         * Fixup for IMPLICIT tag: note this messes up for tags > 30, but so
+         * did the old code. Tags > 30 are very rare anyway.
+         */
+        if (out && (tag != -1))
+            *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
+        return i;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        /* Use indefinite length constructed if requested */
+        if (aclass & ASN1_TFLG_NDEF)
+            ndef = 2;
+        OPENSSL_FALLTHROUGH;
+
+    case ASN1_ITYPE_SEQUENCE:
+        i = asn1_enc_restore(&seqcontlen, out, pval, it);
+        /* An error occurred */
+        if (i < 0)
+            return 0;
+        /* We have a valid cached encoding... */
+        if (i > 0)
+            return seqcontlen;
+        /* Otherwise carry on */
+        seqcontlen = 0;
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            /* Retain any other flags in aclass */
+            aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
+                | V_ASN1_UNIVERSAL;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        /* First work out sequence content length */
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            int tmplen;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass);
+            if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen))
+                return -1;
+            seqcontlen += tmplen;
+        }
+
+        seqlen = ASN1_object_size(ndef, seqcontlen, tag);
+        if (!out || seqlen == -1)
+            return seqlen;
+        /* Output SEQUENCE header */
+        ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* FIXME: check for errors in enhanced version */
+            asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
+        }
+        if (ndef == 2)
+            ASN1_put_eoc(out);
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        return seqlen;
+
+    default:
+        return 0;
+
+    }
+    return 0;
+}
+
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int iclass)
+{
+    int i, ret, flags, ttag, tclass, ndef;
+    size_t j;
+    flags = tt->flags;
+    /*
+     * Work out tag and class to use: tagging may come either from the
+     * template or the arguments, not both because this would create
+     * ambiguity. Additionally the iclass argument may contain some
+     * additional flags which should be noted and passed down to other
+     * levels.
+     */
+    if (flags & ASN1_TFLG_TAG_MASK) {
+        /* Error if argument and template tagging */
+        if (tag != -1)
+            /* FIXME: error code here */
+            return -1;
+        /* Get tagging from template */
+        ttag = tt->tag;
+        tclass = flags & ASN1_TFLG_TAG_CLASS;
+    } else if (tag != -1) {
+        /* No template tagging, get from arguments */
+        ttag = tag;
+        tclass = iclass & ASN1_TFLG_TAG_CLASS;
+    } else {
+        ttag = -1;
+        tclass = 0;
+    }
+    /*
+     * Remove any class mask from iflag.
+     */
+    iclass &= ~ASN1_TFLG_TAG_CLASS;
+
+    /*
+     * At this point 'ttag' contains the outer tag to use, 'tclass' is the
+     * class and iclass is any flags passed to this function.
+     */
+
+    /* if template and arguments require ndef, use it */
+    if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
+        ndef = 2;
+    else
+        ndef = 1;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        int isset, sktag, skaclass;
+        int skcontlen, sklen;
+        ASN1_VALUE *skitem;
+
+        if (!*pval)
+            return 0;
+
+        if (flags & ASN1_TFLG_SET_OF) {
+            isset = 1;
+            /* 2 means we reorder */
+            if (flags & ASN1_TFLG_SEQUENCE_OF)
+                isset = 2;
+        } else
+            isset = 0;
+
+        /*
+         * Work out inner tag value: if EXPLICIT or no tagging use underlying
+         * type.
+         */
+        if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) {
+            sktag = ttag;
+            skaclass = tclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (isset)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+
+        /* Determine total length of items */
+        skcontlen = 0;
+        for (j = 0; j < sk_ASN1_VALUE_num(sk); j++) {
+            int tmplen;
+            skitem = sk_ASN1_VALUE_value(sk, j);
+            tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item),
+                                      -1, iclass);
+            if (tmplen == -1 || (skcontlen > INT_MAX - tmplen))
+                return -1;
+            skcontlen += tmplen;
+        }
+        sklen = ASN1_object_size(ndef, skcontlen, sktag);
+        if (sklen == -1)
+            return -1;
+        /* If EXPLICIT need length of surrounding tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ret = ASN1_object_size(ndef, sklen, ttag);
+        else
+            ret = sklen;
+
+        if (!out || ret == -1)
+            return ret;
+
+        /* Now encode this lot... */
+        /* EXPLICIT tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ASN1_put_object(out, ndef, sklen, ttag, tclass);
+        /* SET or SEQUENCE and IMPLICIT tag */
+        ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
+        /* And the stuff itself */
+        asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
+                         isset, iclass);
+        if (ndef == 2) {
+            ASN1_put_eoc(out);
+            if (flags & ASN1_TFLG_EXPTAG)
+                ASN1_put_eoc(out);
+        }
+
+        return ret;
+    }
+
+    if (flags & ASN1_TFLG_EXPTAG) {
+        /* EXPLICIT tagging */
+        /* Find length of tagged item */
+        i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass);
+        if (!i)
+            return 0;
+        /* Find length of EXPLICIT tag */
+        ret = ASN1_object_size(ndef, i, ttag);
+        if (out && ret != -1) {
+            /* Output tag and item */
+            ASN1_put_object(out, ndef, i, ttag, tclass);
+            ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass);
+            if (ndef == 2)
+                ASN1_put_eoc(out);
+        }
+        return ret;
+    }
+
+    /* Either normal or IMPLICIT tagging: combine class and flags */
+    return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
+                            ttag, tclass | iclass);
+
+}
+
+/* Temporary structure used to hold DER encoding of items for SET OF */
+
+typedef struct {
+    unsigned char *data;
+    int length;
+    ASN1_VALUE *field;
+} DER_ENC;
+
+static int der_cmp(const void *a, const void *b)
+{
+    const DER_ENC *d1 = a, *d2 = b;
+    int cmplen, i;
+    cmplen = (d1->length < d2->length) ? d1->length : d2->length;
+    i = OPENSSL_memcmp(d1->data, d2->data, cmplen);
+    if (i)
+        return i;
+    return d1->length - d2->length;
+}
+
+/* Output the content octets of SET OF or SEQUENCE OF */
+
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass)
+{
+    size_t i;
+    ASN1_VALUE *skitem;
+    unsigned char *tmpdat = NULL, *p = NULL;
+    DER_ENC *derlst = NULL, *tder;
+    if (do_sort) {
+        /* Don't need to sort less than 2 items */
+        if (sk_ASN1_VALUE_num(sk) < 2)
+            do_sort = 0;
+        else {
+            derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
+                                    * sizeof(*derlst));
+            if (!derlst)
+                return 0;
+            tmpdat = OPENSSL_malloc(skcontlen);
+            if (!tmpdat) {
+                OPENSSL_free(derlst);
+                return 0;
+            }
+        }
+    }
+    /* If not sorting just output each item */
+    if (!do_sort) {
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
+        }
+        return 1;
+    }
+    p = tmpdat;
+
+    /* Doing sort: build up a list of each member's DER encoding */
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        skitem = sk_ASN1_VALUE_value(sk, i);
+        tder->data = p;
+        tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
+        tder->field = skitem;
+    }
+
+    /* Now sort them */
+    qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
+    /* Output sorted DER encoding */
+    p = *out;
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        OPENSSL_memcpy(p, tder->data, tder->length);
+        p += tder->length;
+    }
+    *out = p;
+    /* If do_sort is 2 then reorder the STACK */
+    if (do_sort == 2) {
+        for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
+            (void)sk_ASN1_VALUE_set(sk, i, tder->field);
+    }
+    OPENSSL_free(derlst);
+    OPENSSL_free(tmpdat);
+    return 1;
+}
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass)
+{
+    int len;
+    int utype;
+    int usetag;
+    int ndef = 0;
+
+    utype = it->utype;
+
+    /*
+     * Get length of content octets and maybe find out the underlying type.
+     */
+
+    len = asn1_ex_i2c(pval, NULL, &utype, it);
+
+    /*
+     * If SEQUENCE, SET or OTHER then header is included in pseudo content
+     * octets so don't include tag+length. We need to check here because the
+     * call to asn1_ex_i2c() could change utype.
+     */
+    if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
+        (utype == V_ASN1_OTHER))
+        usetag = 0;
+    else
+        usetag = 1;
+
+    /* -1 means omit type */
+
+    if (len == -1)
+        return 0;
+
+    /* -2 return is special meaning use ndef */
+    if (len == -2) {
+        ndef = 2;
+        len = 0;
+    }
+
+    /* If not implicitly tagged get tag from underlying type */
+    if (tag == -1)
+        tag = utype;
+
+    /* Output tag+length followed by content octets */
+    if (out) {
+        if (usetag)
+            ASN1_put_object(out, ndef, len, tag, aclass);
+        asn1_ex_i2c(pval, *out, &utype, it);
+        if (ndef)
+            ASN1_put_eoc(out);
+        else
+            *out += len;
+    }
+
+    if (usetag)
+        return ASN1_object_size(ndef, len, tag);
+    return len;
+}
+
+/* Produce content octets from a structure */
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
+                const ASN1_ITEM *it)
+{
+    ASN1_BOOLEAN *tbool = NULL;
+    ASN1_STRING *strtmp;
+    ASN1_OBJECT *otmp;
+    int utype;
+    const unsigned char *cont;
+    unsigned char c;
+    int len;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    pf = it->funcs;
+    if (pf && pf->prim_i2c)
+        return pf->prim_i2c(pval, cout, putype, it);
+
+    /* Should type be omitted? */
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE)
+        || (it->utype != V_ASN1_BOOLEAN)) {
+        if (!*pval)
+            return -1;
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        /* If MSTRING type set the underlying type */
+        strtmp = (ASN1_STRING *)*pval;
+        utype = strtmp->type;
+        *putype = utype;
+    } else if (it->utype == V_ASN1_ANY) {
+        /* If ANY set type and pointer to value */
+        ASN1_TYPE *typ;
+        typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        *putype = utype;
+        pval = &typ->value.asn1_value;
+    } else
+        utype = *putype;
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        otmp = (ASN1_OBJECT *)*pval;
+        cont = otmp->data;
+        len = otmp->length;
+        if (cont == NULL || len == 0)
+            return -1;
+        break;
+
+    case V_ASN1_NULL:
+        cont = NULL;
+        len = 0;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        tbool = (ASN1_BOOLEAN *)pval;
+        if (*tbool == -1)
+            return -1;
+        if (it->utype != V_ASN1_ANY) {
+            /*
+             * Default handling if value == size field then omit
+             */
+            if (*tbool && (it->size > 0))
+                return -1;
+            if (!*tbool && !it->size)
+                return -1;
+        }
+        c = (unsigned char)*tbool;
+        cont = &c;
+        len = 1;
+        break;
+
+    case V_ASN1_BIT_STRING:
+        return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
+                                   cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        /*
+         * These are all have the same content format as ASN1_INTEGER
+         */
+        return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    default:
+        /* All based on ASN1_STRING and handled the same */
+        strtmp = (ASN1_STRING *)*pval;
+        /* Special handling for NDEF */
+        if ((it->size == ASN1_TFLG_NDEF)
+            && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) {
+            if (cout) {
+                strtmp->data = cout;
+                strtmp->length = 0;
+            }
+            /* Special return code */
+            return -2;
+        }
+        cont = strtmp->data;
+        len = strtmp->length;
+
+        break;
+
+    }
+    if (cout && len)
+        OPENSSL_memcpy(cout, cont, len);
+    return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c.grpc_back
new file mode 100644
index 0000000..3722a51
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_enc.c.grpc_back	
@@ -0,0 +1,664 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass);
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass);
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int aclass);
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags);
+
+/*
+ * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use
+ * indefinite length constructed encoding, where appropriate
+ */
+
+int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
+                       const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
+}
+
+int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, 0);
+}
+
+/*
+ * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out'
+ * points to a buffer to output the data to. The new i2d has one additional
+ * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is
+ * allocated and populated with the encoding.
+ */
+
+static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
+                               const ASN1_ITEM *it, int flags)
+{
+    if (out && !*out) {
+        unsigned char *p, *buf;
+        int len;
+        len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
+        if (len <= 0)
+            return len;
+        buf = OPENSSL_malloc(len);
+        if (!buf)
+            return -1;
+        p = buf;
+        ASN1_item_ex_i2d(&val, &p, it, -1, flags);
+        *out = buf;
+        return len;
+    }
+
+    return ASN1_item_ex_i2d(&val, out, it, -1, flags);
+}
+
+/*
+ * Encode an item, taking care of IMPLICIT tagging (if any). This function
+ * performs the normal item handling: it can be used in external types.
+ */
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                     const ASN1_ITEM *it, int tag, int aclass)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    unsigned char *p = NULL;
+    int i, seqcontlen, seqlen, ndef = 1;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb = 0;
+
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return 0;
+
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            return asn1_template_ex_i2d(pval, out, it->templates,
+                                        tag, aclass);
+        return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            const ASN1_TEMPLATE *chtt;
+            chtt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, chtt);
+            return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass);
+        }
+        /* Fixme: error condition if selector out of range */
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        /* If new style i2d it does all the work */
+        ef = it->funcs;
+        return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
+
+    case ASN1_ITYPE_COMPAT:
+        /* old style hackery... */
+        cf = it->funcs;
+        if (out)
+            p = *out;
+        i = cf->asn1_i2d(*pval, out);
+        /*
+         * Fixup for IMPLICIT tag: note this messes up for tags > 30, but so
+         * did the old code. Tags > 30 are very rare anyway.
+         */
+        if (out && (tag != -1))
+            *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
+        return i;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        /* Use indefinite length constructed if requested */
+        if (aclass & ASN1_TFLG_NDEF)
+            ndef = 2;
+        OPENSSL_FALLTHROUGH;
+
+    case ASN1_ITYPE_SEQUENCE:
+        i = asn1_enc_restore(&seqcontlen, out, pval, it);
+        /* An error occurred */
+        if (i < 0)
+            return 0;
+        /* We have a valid cached encoding... */
+        if (i > 0)
+            return seqcontlen;
+        /* Otherwise carry on */
+        seqcontlen = 0;
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            /* Retain any other flags in aclass */
+            aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
+                | V_ASN1_UNIVERSAL;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        /* First work out sequence content length */
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            int tmplen;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass);
+            if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen))
+                return -1;
+            seqcontlen += tmplen;
+        }
+
+        seqlen = ASN1_object_size(ndef, seqcontlen, tag);
+        if (!out || seqlen == -1)
+            return seqlen;
+        /* Output SEQUENCE header */
+        ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* FIXME: check for errors in enhanced version */
+            asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
+        }
+        if (ndef == 2)
+            ASN1_put_eoc(out);
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        return seqlen;
+
+    default:
+        return 0;
+
+    }
+    return 0;
+}
+
+static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
+                                const ASN1_TEMPLATE *tt, int tag, int iclass)
+{
+    int i, ret, flags, ttag, tclass, ndef;
+    size_t j;
+    flags = tt->flags;
+    /*
+     * Work out tag and class to use: tagging may come either from the
+     * template or the arguments, not both because this would create
+     * ambiguity. Additionally the iclass argument may contain some
+     * additional flags which should be noted and passed down to other
+     * levels.
+     */
+    if (flags & ASN1_TFLG_TAG_MASK) {
+        /* Error if argument and template tagging */
+        if (tag != -1)
+            /* FIXME: error code here */
+            return -1;
+        /* Get tagging from template */
+        ttag = tt->tag;
+        tclass = flags & ASN1_TFLG_TAG_CLASS;
+    } else if (tag != -1) {
+        /* No template tagging, get from arguments */
+        ttag = tag;
+        tclass = iclass & ASN1_TFLG_TAG_CLASS;
+    } else {
+        ttag = -1;
+        tclass = 0;
+    }
+    /*
+     * Remove any class mask from iflag.
+     */
+    iclass &= ~ASN1_TFLG_TAG_CLASS;
+
+    /*
+     * At this point 'ttag' contains the outer tag to use, 'tclass' is the
+     * class and iclass is any flags passed to this function.
+     */
+
+    /* if template and arguments require ndef, use it */
+    if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
+        ndef = 2;
+    else
+        ndef = 1;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        int isset, sktag, skaclass;
+        int skcontlen, sklen;
+        ASN1_VALUE *skitem;
+
+        if (!*pval)
+            return 0;
+
+        if (flags & ASN1_TFLG_SET_OF) {
+            isset = 1;
+            /* 2 means we reorder */
+            if (flags & ASN1_TFLG_SEQUENCE_OF)
+                isset = 2;
+        } else
+            isset = 0;
+
+        /*
+         * Work out inner tag value: if EXPLICIT or no tagging use underlying
+         * type.
+         */
+        if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) {
+            sktag = ttag;
+            skaclass = tclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (isset)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+
+        /* Determine total length of items */
+        skcontlen = 0;
+        for (j = 0; j < sk_ASN1_VALUE_num(sk); j++) {
+            int tmplen;
+            skitem = sk_ASN1_VALUE_value(sk, j);
+            tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item),
+                                      -1, iclass);
+            if (tmplen == -1 || (skcontlen > INT_MAX - tmplen))
+                return -1;
+            skcontlen += tmplen;
+        }
+        sklen = ASN1_object_size(ndef, skcontlen, sktag);
+        if (sklen == -1)
+            return -1;
+        /* If EXPLICIT need length of surrounding tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ret = ASN1_object_size(ndef, sklen, ttag);
+        else
+            ret = sklen;
+
+        if (!out || ret == -1)
+            return ret;
+
+        /* Now encode this lot... */
+        /* EXPLICIT tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ASN1_put_object(out, ndef, sklen, ttag, tclass);
+        /* SET or SEQUENCE and IMPLICIT tag */
+        ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
+        /* And the stuff itself */
+        asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
+                         isset, iclass);
+        if (ndef == 2) {
+            ASN1_put_eoc(out);
+            if (flags & ASN1_TFLG_EXPTAG)
+                ASN1_put_eoc(out);
+        }
+
+        return ret;
+    }
+
+    if (flags & ASN1_TFLG_EXPTAG) {
+        /* EXPLICIT tagging */
+        /* Find length of tagged item */
+        i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass);
+        if (!i)
+            return 0;
+        /* Find length of EXPLICIT tag */
+        ret = ASN1_object_size(ndef, i, ttag);
+        if (out && ret != -1) {
+            /* Output tag and item */
+            ASN1_put_object(out, ndef, i, ttag, tclass);
+            ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass);
+            if (ndef == 2)
+                ASN1_put_eoc(out);
+        }
+        return ret;
+    }
+
+    /* Either normal or IMPLICIT tagging: combine class and flags */
+    return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
+                            ttag, tclass | iclass);
+
+}
+
+/* Temporary structure used to hold DER encoding of items for SET OF */
+
+typedef struct {
+    unsigned char *data;
+    int length;
+    ASN1_VALUE *field;
+} DER_ENC;
+
+static int der_cmp(const void *a, const void *b)
+{
+    const DER_ENC *d1 = a, *d2 = b;
+    int cmplen, i;
+    cmplen = (d1->length < d2->length) ? d1->length : d2->length;
+    i = OPENSSL_memcmp(d1->data, d2->data, cmplen);
+    if (i)
+        return i;
+    return d1->length - d2->length;
+}
+
+/* Output the content octets of SET OF or SEQUENCE OF */
+
+static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass)
+{
+    size_t i;
+    ASN1_VALUE *skitem;
+    unsigned char *tmpdat = NULL, *p = NULL;
+    DER_ENC *derlst = NULL, *tder;
+    if (do_sort) {
+        /* Don't need to sort less than 2 items */
+        if (sk_ASN1_VALUE_num(sk) < 2)
+            do_sort = 0;
+        else {
+            derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
+                                    * sizeof(*derlst));
+            if (!derlst)
+                return 0;
+            tmpdat = OPENSSL_malloc(skcontlen);
+            if (!tmpdat) {
+                OPENSSL_free(derlst);
+                return 0;
+            }
+        }
+    }
+    /* If not sorting just output each item */
+    if (!do_sort) {
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
+        }
+        return 1;
+    }
+    p = tmpdat;
+
+    /* Doing sort: build up a list of each member's DER encoding */
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        skitem = sk_ASN1_VALUE_value(sk, i);
+        tder->data = p;
+        tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
+        tder->field = skitem;
+    }
+
+    /* Now sort them */
+    qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
+    /* Output sorted DER encoding */
+    p = *out;
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        OPENSSL_memcpy(p, tder->data, tder->length);
+        p += tder->length;
+    }
+    *out = p;
+    /* If do_sort is 2 then reorder the STACK */
+    if (do_sort == 2) {
+        for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
+            (void)sk_ASN1_VALUE_set(sk, i, tder->field);
+    }
+    OPENSSL_free(derlst);
+    OPENSSL_free(tmpdat);
+    return 1;
+}
+
+static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
+                                 const ASN1_ITEM *it, int tag, int aclass)
+{
+    int len;
+    int utype;
+    int usetag;
+    int ndef = 0;
+
+    utype = it->utype;
+
+    /*
+     * Get length of content octets and maybe find out the underlying type.
+     */
+
+    len = asn1_ex_i2c(pval, NULL, &utype, it);
+
+    /*
+     * If SEQUENCE, SET or OTHER then header is included in pseudo content
+     * octets so don't include tag+length. We need to check here because the
+     * call to asn1_ex_i2c() could change utype.
+     */
+    if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
+        (utype == V_ASN1_OTHER))
+        usetag = 0;
+    else
+        usetag = 1;
+
+    /* -1 means omit type */
+
+    if (len == -1)
+        return 0;
+
+    /* -2 return is special meaning use ndef */
+    if (len == -2) {
+        ndef = 2;
+        len = 0;
+    }
+
+    /* If not implicitly tagged get tag from underlying type */
+    if (tag == -1)
+        tag = utype;
+
+    /* Output tag+length followed by content octets */
+    if (out) {
+        if (usetag)
+            ASN1_put_object(out, ndef, len, tag, aclass);
+        asn1_ex_i2c(pval, *out, &utype, it);
+        if (ndef)
+            ASN1_put_eoc(out);
+        else
+            *out += len;
+    }
+
+    if (usetag)
+        return ASN1_object_size(ndef, len, tag);
+    return len;
+}
+
+/* Produce content octets from a structure */
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
+                const ASN1_ITEM *it)
+{
+    ASN1_BOOLEAN *tbool = NULL;
+    ASN1_STRING *strtmp;
+    ASN1_OBJECT *otmp;
+    int utype;
+    const unsigned char *cont;
+    unsigned char c;
+    int len;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    pf = it->funcs;
+    if (pf && pf->prim_i2c)
+        return pf->prim_i2c(pval, cout, putype, it);
+
+    /* Should type be omitted? */
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE)
+        || (it->utype != V_ASN1_BOOLEAN)) {
+        if (!*pval)
+            return -1;
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        /* If MSTRING type set the underlying type */
+        strtmp = (ASN1_STRING *)*pval;
+        utype = strtmp->type;
+        *putype = utype;
+    } else if (it->utype == V_ASN1_ANY) {
+        /* If ANY set type and pointer to value */
+        ASN1_TYPE *typ;
+        typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        *putype = utype;
+        pval = &typ->value.asn1_value;
+    } else
+        utype = *putype;
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        otmp = (ASN1_OBJECT *)*pval;
+        cont = otmp->data;
+        len = otmp->length;
+        if (cont == NULL || len == 0)
+            return -1;
+        break;
+
+    case V_ASN1_NULL:
+        cont = NULL;
+        len = 0;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        tbool = (ASN1_BOOLEAN *)pval;
+        if (*tbool == -1)
+            return -1;
+        if (it->utype != V_ASN1_ANY) {
+            /*
+             * Default handling if value == size field then omit
+             */
+            if (*tbool && (it->size > 0))
+                return -1;
+            if (!*tbool && !it->size)
+                return -1;
+        }
+        c = (unsigned char)*tbool;
+        cont = &c;
+        len = 1;
+        break;
+
+    case V_ASN1_BIT_STRING:
+        return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
+                                   cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        /*
+         * These are all have the same content format as ASN1_INTEGER
+         */
+        return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    default:
+        /* All based on ASN1_STRING and handled the same */
+        strtmp = (ASN1_STRING *)*pval;
+        /* Special handling for NDEF */
+        if ((it->size == ASN1_TFLG_NDEF)
+            && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) {
+            if (cout) {
+                strtmp->data = cout;
+                strtmp->length = 0;
+            }
+            /* Special return code */
+            return -2;
+        }
+        cont = strtmp->data;
+        len = strtmp->length;
+
+        break;
+
+    }
+    if (cout && len)
+        OPENSSL_memcpy(cout, cont, len);
+    return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c
new file mode 100644
index 0000000..65bea9a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c	
@@ -0,0 +1,244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/mem.h>
+
+#include "asn1_locl.h"
+
+/* Free up an ASN1 structure */
+
+void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
+{
+    asn1_item_combine_free(&val, it, 0);
+}
+
+void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    asn1_item_combine_free(pval, it, 0);
+}
+
+void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
+{
+    const ASN1_TEMPLATE *tt = NULL, *seqtt;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    int i;
+    if (!pval)
+        return;
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            ASN1_template_free(pval, it->templates);
+        else
+            ASN1_primitive_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        ASN1_primitive_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
+            if (i == 2)
+                return;
+        }
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            tt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, tt);
+            ASN1_template_free(pchval, tt);
+        }
+        if (asn1_cb)
+            asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
+        if (!combine) {
+            OPENSSL_free(*pval);
+            *pval = NULL;
+        }
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+        cf = it->funcs;
+        if (cf && cf->asn1_free)
+            cf->asn1_free(*pval);
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_free)
+            ef->asn1_ex_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        if (!asn1_refcount_dec_and_test_zero(pval, it))
+            return;
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
+            if (i == 2)
+                return;
+        }
+        asn1_enc_free(pval, it);
+        /*
+         * If we free up as normal we will invalidate any ANY DEFINED BY
+         * field and we wont be able to determine the type of the field it
+         * defines. So free up in reverse order.
+         */
+        tt = it->templates + it->tcount - 1;
+        for (i = 0; i < it->tcount; tt--, i++) {
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 0);
+            if (!seqtt)
+                continue;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            ASN1_template_free(pseqval, seqtt);
+        }
+        if (asn1_cb)
+            asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
+        if (!combine) {
+            OPENSSL_free(*pval);
+            *pval = NULL;
+        }
+        break;
+    }
+}
+
+void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    size_t i;
+    if (tt->flags & ASN1_TFLG_SK_MASK) {
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            ASN1_VALUE *vtmp;
+            vtmp = sk_ASN1_VALUE_value(sk, i);
+            asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), 0);
+        }
+        sk_ASN1_VALUE_free(sk);
+        *pval = NULL;
+    } else
+        asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),
+                               tt->flags & ASN1_TFLG_COMBINE);
+}
+
+void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    int utype;
+    if (it) {
+        const ASN1_PRIMITIVE_FUNCS *pf;
+        pf = it->funcs;
+        if (pf && pf->prim_free) {
+            pf->prim_free(pval, it);
+            return;
+        }
+    }
+    /* Special case: if 'it' is NULL free contents of ASN1_TYPE */
+    if (!it) {
+        ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        pval = &typ->value.asn1_value;
+        if (!*pval)
+            return;
+    } else if (it->itype == ASN1_ITYPE_MSTRING) {
+        utype = -1;
+        if (!*pval)
+            return;
+    } else {
+        utype = it->utype;
+        if ((utype != V_ASN1_BOOLEAN) && !*pval)
+            return;
+    }
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (it)
+            *(ASN1_BOOLEAN *)pval = it->size;
+        else
+            *(ASN1_BOOLEAN *)pval = -1;
+        return;
+
+    case V_ASN1_NULL:
+        break;
+
+    case V_ASN1_ANY:
+        ASN1_primitive_free(pval, NULL);
+        OPENSSL_free(*pval);
+        break;
+
+    default:
+        ASN1_STRING_free((ASN1_STRING *)*pval);
+        *pval = NULL;
+        break;
+    }
+    *pval = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c.grpc_back
new file mode 100644
index 0000000..eabc0fb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_fre.c.grpc_back	
@@ -0,0 +1,244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/mem.h>
+
+#include "asn1_locl.h"
+
+/* Free up an ASN1 structure */
+
+void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
+{
+    asn1_item_combine_free(&val, it, 0);
+}
+
+void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    asn1_item_combine_free(pval, it, 0);
+}
+
+void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
+{
+    const ASN1_TEMPLATE *tt = NULL, *seqtt;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    int i;
+    if (!pval)
+        return;
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            ASN1_template_free(pval, it->templates);
+        else
+            ASN1_primitive_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        ASN1_primitive_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
+            if (i == 2)
+                return;
+        }
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            tt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, tt);
+            ASN1_template_free(pchval, tt);
+        }
+        if (asn1_cb)
+            asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
+        if (!combine) {
+            OPENSSL_free(*pval);
+            *pval = NULL;
+        }
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+        cf = it->funcs;
+        if (cf && cf->asn1_free)
+            cf->asn1_free(*pval);
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_free)
+            ef->asn1_ex_free(pval, it);
+        break;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        if (!asn1_refcount_dec_and_test_zero(pval, it))
+            return;
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
+            if (i == 2)
+                return;
+        }
+        asn1_enc_free(pval, it);
+        /*
+         * If we free up as normal we will invalidate any ANY DEFINED BY
+         * field and we wont be able to determine the type of the field it
+         * defines. So free up in reverse order.
+         */
+        tt = it->templates + it->tcount - 1;
+        for (i = 0; i < it->tcount; tt--, i++) {
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 0);
+            if (!seqtt)
+                continue;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            ASN1_template_free(pseqval, seqtt);
+        }
+        if (asn1_cb)
+            asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
+        if (!combine) {
+            OPENSSL_free(*pval);
+            *pval = NULL;
+        }
+        break;
+    }
+}
+
+void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    size_t i;
+    if (tt->flags & ASN1_TFLG_SK_MASK) {
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            ASN1_VALUE *vtmp;
+            vtmp = sk_ASN1_VALUE_value(sk, i);
+            asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), 0);
+        }
+        sk_ASN1_VALUE_free(sk);
+        *pval = NULL;
+    } else
+        asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),
+                               tt->flags & ASN1_TFLG_COMBINE);
+}
+
+void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    int utype;
+    if (it) {
+        const ASN1_PRIMITIVE_FUNCS *pf;
+        pf = it->funcs;
+        if (pf && pf->prim_free) {
+            pf->prim_free(pval, it);
+            return;
+        }
+    }
+    /* Special case: if 'it' is NULL free contents of ASN1_TYPE */
+    if (!it) {
+        ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        pval = &typ->value.asn1_value;
+        if (!*pval)
+            return;
+    } else if (it->itype == ASN1_ITYPE_MSTRING) {
+        utype = -1;
+        if (!*pval)
+            return;
+    } else {
+        utype = it->utype;
+        if ((utype != V_ASN1_BOOLEAN) && !*pval)
+            return;
+    }
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (it)
+            *(ASN1_BOOLEAN *)pval = it->size;
+        else
+            *(ASN1_BOOLEAN *)pval = -1;
+        return;
+
+    case V_ASN1_NULL:
+        break;
+
+    case V_ASN1_ANY:
+        ASN1_primitive_free(pval, NULL);
+        OPENSSL_free(*pval);
+        break;
+
+    default:
+        ASN1_STRING_free((ASN1_STRING *)*pval);
+        *pval = NULL;
+        break;
+    }
+    *pval = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c
new file mode 100644
index 0000000..c1a4e63
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c	
@@ -0,0 +1,387 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <string.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+
+#include "asn1_locl.h"
+#include "../internal.h"
+
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                                    int combine);
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
+{
+    ASN1_VALUE *ret = NULL;
+    if (ASN1_item_ex_new(&ret, it) > 0)
+        return ret;
+    return NULL;
+}
+
+/* Allocate an ASN1 structure */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    return asn1_item_ex_combine_new(pval, it, 0);
+}
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                                    int combine)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    ASN1_VALUE **pseqval;
+    int i;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_push_info(it->sname);
+#endif
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_new) {
+            if (!ef->asn1_ex_new(pval, it))
+                goto memerr;
+        }
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+        cf = it->funcs;
+        if (cf && cf->asn1_new) {
+            *pval = cf->asn1_new();
+            if (!*pval)
+                goto memerr;
+        }
+        break;
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates) {
+            if (!ASN1_template_new(pval, it->templates))
+                goto memerr;
+        } else if (!ASN1_primitive_new(pval, it))
+            goto memerr;
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        if (!ASN1_primitive_new(pval, it))
+            goto memerr;
+        break;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+            if (!i)
+                goto auxerr;
+            if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+                if (it->sname)
+                    CRYPTO_pop_info();
+#endif
+                return 1;
+            }
+        }
+        if (!combine) {
+            *pval = OPENSSL_malloc(it->size);
+            if (!*pval)
+                goto memerr;
+            OPENSSL_memset(*pval, 0, it->size);
+        }
+        asn1_set_choice_selector(pval, -1, it);
+        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+            goto auxerr2;
+        break;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+            if (!i)
+                goto auxerr;
+            if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+                if (it->sname)
+                    CRYPTO_pop_info();
+#endif
+                return 1;
+            }
+        }
+        if (!combine) {
+            *pval = OPENSSL_malloc(it->size);
+            if (!*pval)
+                goto memerr;
+            OPENSSL_memset(*pval, 0, it->size);
+            asn1_refcount_set_one(pval, it);
+            asn1_enc_init(pval, it);
+        }
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            pseqval = asn1_get_field_ptr(pval, tt);
+            if (!ASN1_template_new(pseqval, tt))
+                goto memerr2;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+            goto auxerr2;
+        break;
+    }
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 1;
+
+ memerr2:
+    asn1_item_combine_free(pval, it, combine);
+ memerr:
+    OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 0;
+
+ auxerr2:
+    asn1_item_combine_free(pval, it, combine);
+ auxerr:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 0;
+
+}
+
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    const ASN1_EXTERN_FUNCS *ef;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_clear)
+            ef->asn1_ex_clear(pval, it);
+        else
+            *pval = NULL;
+        break;
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            asn1_template_clear(pval, it->templates);
+        else
+            asn1_primitive_clear(pval, it);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        asn1_primitive_clear(pval, it);
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+    case ASN1_ITYPE_CHOICE:
+    case ASN1_ITYPE_SEQUENCE:
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        *pval = NULL;
+        break;
+    }
+}
+
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
+    int ret;
+    if (tt->flags & ASN1_TFLG_OPTIONAL) {
+        asn1_template_clear(pval, tt);
+        return 1;
+    }
+    /* If ANY DEFINED BY nothing to do */
+
+    if (tt->flags & ASN1_TFLG_ADB_MASK) {
+        *pval = NULL;
+        return 1;
+    }
+#ifdef CRYPTO_MDEBUG
+    if (tt->field_name)
+        CRYPTO_push_info(tt->field_name);
+#endif
+    /* If SET OF or SEQUENCE OF, its a STACK */
+    if (tt->flags & ASN1_TFLG_SK_MASK) {
+        STACK_OF(ASN1_VALUE) *skval;
+        skval = sk_ASN1_VALUE_new_null();
+        if (!skval) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            ret = 0;
+            goto done;
+        }
+        *pval = (ASN1_VALUE *)skval;
+        ret = 1;
+        goto done;
+    }
+    /* Otherwise pass it back to the item routine */
+    ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
+ done:
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return ret;
+}
+
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    /* If ADB or STACK just NULL the field */
+    if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
+        *pval = NULL;
+    else
+        asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
+}
+
+/*
+ * NB: could probably combine most of the real XXX_new() behaviour and junk
+ * all the old functions.
+ */
+
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    ASN1_TYPE *typ;
+    ASN1_STRING *str;
+    int utype;
+
+    if (!it)
+        return 0;
+
+    if (it->funcs) {
+        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+        if (pf->prim_new)
+            return pf->prim_new(pval, it);
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING)
+        utype = -1;
+    else
+        utype = it->utype;
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
+        return 1;
+
+    case V_ASN1_BOOLEAN:
+        *(ASN1_BOOLEAN *)pval = it->size;
+        return 1;
+
+    case V_ASN1_NULL:
+        *pval = (ASN1_VALUE *)1;
+        return 1;
+
+    case V_ASN1_ANY:
+        typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
+        if (!typ)
+            return 0;
+        typ->value.ptr = NULL;
+        typ->type = -1;
+        *pval = (ASN1_VALUE *)typ;
+        break;
+
+    default:
+        str = ASN1_STRING_type_new(utype);
+        if (it->itype == ASN1_ITYPE_MSTRING && str)
+            str->flags |= ASN1_STRING_FLAG_MSTRING;
+        *pval = (ASN1_VALUE *)str;
+        break;
+    }
+    if (*pval)
+        return 1;
+    return 0;
+}
+
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    int utype;
+    if (it && it->funcs) {
+        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+        if (pf->prim_clear)
+            pf->prim_clear(pval, it);
+        else
+            *pval = NULL;
+        return;
+    }
+    if (!it || (it->itype == ASN1_ITYPE_MSTRING))
+        utype = -1;
+    else
+        utype = it->utype;
+    if (utype == V_ASN1_BOOLEAN)
+        *(ASN1_BOOLEAN *)pval = it->size;
+    else
+        *pval = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c.grpc_back
new file mode 100644
index 0000000..5db38be
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_new.c.grpc_back	
@@ -0,0 +1,387 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+#include "asn1_locl.h"
+#include "../internal.h"
+
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                                    int combine);
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
+{
+    ASN1_VALUE *ret = NULL;
+    if (ASN1_item_ex_new(&ret, it) > 0)
+        return ret;
+    return NULL;
+}
+
+/* Allocate an ASN1 structure */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    return asn1_item_ex_combine_new(pval, it, 0);
+}
+
+static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
+                                    int combine)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    ASN1_VALUE **pseqval;
+    int i;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_push_info(it->sname);
+#endif
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_new) {
+            if (!ef->asn1_ex_new(pval, it))
+                goto memerr;
+        }
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+        cf = it->funcs;
+        if (cf && cf->asn1_new) {
+            *pval = cf->asn1_new();
+            if (!*pval)
+                goto memerr;
+        }
+        break;
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates) {
+            if (!ASN1_template_new(pval, it->templates))
+                goto memerr;
+        } else if (!ASN1_primitive_new(pval, it))
+            goto memerr;
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        if (!ASN1_primitive_new(pval, it))
+            goto memerr;
+        break;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+            if (!i)
+                goto auxerr;
+            if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+                if (it->sname)
+                    CRYPTO_pop_info();
+#endif
+                return 1;
+            }
+        }
+        if (!combine) {
+            *pval = OPENSSL_malloc(it->size);
+            if (!*pval)
+                goto memerr;
+            OPENSSL_memset(*pval, 0, it->size);
+        }
+        asn1_set_choice_selector(pval, -1, it);
+        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+            goto auxerr2;
+        break;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        if (asn1_cb) {
+            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
+            if (!i)
+                goto auxerr;
+            if (i == 2) {
+#ifdef CRYPTO_MDEBUG
+                if (it->sname)
+                    CRYPTO_pop_info();
+#endif
+                return 1;
+            }
+        }
+        if (!combine) {
+            *pval = OPENSSL_malloc(it->size);
+            if (!*pval)
+                goto memerr;
+            OPENSSL_memset(*pval, 0, it->size);
+            asn1_refcount_set_one(pval, it);
+            asn1_enc_init(pval, it);
+        }
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            pseqval = asn1_get_field_ptr(pval, tt);
+            if (!ASN1_template_new(pseqval, tt))
+                goto memerr2;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
+            goto auxerr2;
+        break;
+    }
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 1;
+
+ memerr2:
+    asn1_item_combine_free(pval, it, combine);
+ memerr:
+    OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 0;
+
+ auxerr2:
+    asn1_item_combine_free(pval, it, combine);
+ auxerr:
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_AUX_ERROR);
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return 0;
+
+}
+
+static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    const ASN1_EXTERN_FUNCS *ef;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_EXTERN:
+        ef = it->funcs;
+        if (ef && ef->asn1_ex_clear)
+            ef->asn1_ex_clear(pval, it);
+        else
+            *pval = NULL;
+        break;
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            asn1_template_clear(pval, it->templates);
+        else
+            asn1_primitive_clear(pval, it);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        asn1_primitive_clear(pval, it);
+        break;
+
+    case ASN1_ITYPE_COMPAT:
+    case ASN1_ITYPE_CHOICE:
+    case ASN1_ITYPE_SEQUENCE:
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        *pval = NULL;
+        break;
+    }
+}
+
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
+    int ret;
+    if (tt->flags & ASN1_TFLG_OPTIONAL) {
+        asn1_template_clear(pval, tt);
+        return 1;
+    }
+    /* If ANY DEFINED BY nothing to do */
+
+    if (tt->flags & ASN1_TFLG_ADB_MASK) {
+        *pval = NULL;
+        return 1;
+    }
+#ifdef CRYPTO_MDEBUG
+    if (tt->field_name)
+        CRYPTO_push_info(tt->field_name);
+#endif
+    /* If SET OF or SEQUENCE OF, its a STACK */
+    if (tt->flags & ASN1_TFLG_SK_MASK) {
+        STACK_OF(ASN1_VALUE) *skval;
+        skval = sk_ASN1_VALUE_new_null();
+        if (!skval) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            ret = 0;
+            goto done;
+        }
+        *pval = (ASN1_VALUE *)skval;
+        ret = 1;
+        goto done;
+    }
+    /* Otherwise pass it back to the item routine */
+    ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
+ done:
+#ifdef CRYPTO_MDEBUG
+    if (it->sname)
+        CRYPTO_pop_info();
+#endif
+    return ret;
+}
+
+static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+{
+    /* If ADB or STACK just NULL the field */
+    if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
+        *pval = NULL;
+    else
+        asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
+}
+
+/*
+ * NB: could probably combine most of the real XXX_new() behaviour and junk
+ * all the old functions.
+ */
+
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    ASN1_TYPE *typ;
+    ASN1_STRING *str;
+    int utype;
+
+    if (!it)
+        return 0;
+
+    if (it->funcs) {
+        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+        if (pf->prim_new)
+            return pf->prim_new(pval, it);
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING)
+        utype = -1;
+    else
+        utype = it->utype;
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
+        return 1;
+
+    case V_ASN1_BOOLEAN:
+        *(ASN1_BOOLEAN *)pval = it->size;
+        return 1;
+
+    case V_ASN1_NULL:
+        *pval = (ASN1_VALUE *)1;
+        return 1;
+
+    case V_ASN1_ANY:
+        typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
+        if (!typ)
+            return 0;
+        typ->value.ptr = NULL;
+        typ->type = -1;
+        *pval = (ASN1_VALUE *)typ;
+        break;
+
+    default:
+        str = ASN1_STRING_type_new(utype);
+        if (it->itype == ASN1_ITYPE_MSTRING && str)
+            str->flags |= ASN1_STRING_FLAG_MSTRING;
+        *pval = (ASN1_VALUE *)str;
+        break;
+    }
+    if (*pval)
+        return 1;
+    return 0;
+}
+
+static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    int utype;
+    if (it && it->funcs) {
+        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
+        if (pf->prim_clear)
+            pf->prim_clear(pval, it);
+        else
+            *pval = NULL;
+        return;
+    }
+    if (!it || (it->itype == ASN1_ITYPE_MSTRING))
+        utype = -1;
+    else
+        utype = it->utype;
+    if (utype == V_ASN1_BOOLEAN)
+        *(ASN1_BOOLEAN *)pval = it->size;
+    else
+        *pval = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c
new file mode 100644
index 0000000..6817240
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c	
@@ -0,0 +1,131 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <openssl_grpc/asn1t.h>
+
+/* Declarations for string types */
+
+#define IMPLEMENT_ASN1_STRING_FUNCTIONS(sname) \
+        IMPLEMENT_ASN1_TYPE(sname) \
+        IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(sname, sname, sname) \
+        sname *sname##_new(void) \
+        { \
+                return ASN1_STRING_type_new(V_##sname); \
+        } \
+        void sname##_free(sname *x) \
+        { \
+                ASN1_STRING_free(x); \
+        }
+
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_OCTET_STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_INTEGER)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_ENUMERATED)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_BIT_STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UTF8STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_PRINTABLESTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_T61STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_IA5STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_GENERALSTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UTCTIME)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_GENERALIZEDTIME)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_VISIBLESTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UNIVERSALSTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_BMPSTRING)
+
+IMPLEMENT_ASN1_TYPE(ASN1_NULL)
+IMPLEMENT_ASN1_FUNCTIONS(ASN1_NULL)
+
+IMPLEMENT_ASN1_TYPE(ASN1_OBJECT)
+
+IMPLEMENT_ASN1_TYPE(ASN1_ANY)
+
+/* Just swallow an ASN1_SEQUENCE in an ASN1_STRING */
+IMPLEMENT_ASN1_TYPE(ASN1_SEQUENCE)
+
+IMPLEMENT_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
+
+/* Multistring types */
+
+IMPLEMENT_ASN1_MSTRING(ASN1_PRINTABLE, B_ASN1_PRINTABLE)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, ASN1_PRINTABLE)
+
+IMPLEMENT_ASN1_MSTRING(DISPLAYTEXT, B_ASN1_DISPLAYTEXT)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, DISPLAYTEXT)
+
+IMPLEMENT_ASN1_MSTRING(DIRECTORYSTRING, B_ASN1_DIRECTORYSTRING)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, DIRECTORYSTRING)
+
+/* Three separate BOOLEAN type: normal, DEFAULT TRUE and DEFAULT FALSE */
+IMPLEMENT_ASN1_TYPE_ex(ASN1_BOOLEAN, ASN1_BOOLEAN, -1)
+IMPLEMENT_ASN1_TYPE_ex(ASN1_TBOOLEAN, ASN1_BOOLEAN, 1)
+IMPLEMENT_ASN1_TYPE_ex(ASN1_FBOOLEAN, ASN1_BOOLEAN, 0)
+
+/* Special, OCTET STRING with indefinite length constructed support */
+
+IMPLEMENT_ASN1_TYPE_ex(ASN1_OCTET_STRING_NDEF, ASN1_OCTET_STRING, ASN1_TFLG_NDEF)
+
+ASN1_ITEM_TEMPLATE(ASN1_SEQUENCE_ANY) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, ASN1_SEQUENCE_ANY, ASN1_ANY)
+ASN1_ITEM_TEMPLATE_END(ASN1_SEQUENCE_ANY)
+
+ASN1_ITEM_TEMPLATE(ASN1_SET_ANY) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, ASN1_SET_ANY, ASN1_ANY)
+ASN1_ITEM_TEMPLATE_END(ASN1_SET_ANY)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ASN1_SEQUENCE_ANY, ASN1_SET_ANY, ASN1_SET_ANY)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c.grpc_back
new file mode 100644
index 0000000..7c5bfd5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_typ.c.grpc_back	
@@ -0,0 +1,131 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/asn1t.h>
+
+/* Declarations for string types */
+
+#define IMPLEMENT_ASN1_STRING_FUNCTIONS(sname) \
+        IMPLEMENT_ASN1_TYPE(sname) \
+        IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(sname, sname, sname) \
+        sname *sname##_new(void) \
+        { \
+                return ASN1_STRING_type_new(V_##sname); \
+        } \
+        void sname##_free(sname *x) \
+        { \
+                ASN1_STRING_free(x); \
+        }
+
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_OCTET_STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_INTEGER)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_ENUMERATED)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_BIT_STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UTF8STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_PRINTABLESTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_T61STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_IA5STRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_GENERALSTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UTCTIME)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_GENERALIZEDTIME)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_VISIBLESTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_UNIVERSALSTRING)
+IMPLEMENT_ASN1_STRING_FUNCTIONS(ASN1_BMPSTRING)
+
+IMPLEMENT_ASN1_TYPE(ASN1_NULL)
+IMPLEMENT_ASN1_FUNCTIONS(ASN1_NULL)
+
+IMPLEMENT_ASN1_TYPE(ASN1_OBJECT)
+
+IMPLEMENT_ASN1_TYPE(ASN1_ANY)
+
+/* Just swallow an ASN1_SEQUENCE in an ASN1_STRING */
+IMPLEMENT_ASN1_TYPE(ASN1_SEQUENCE)
+
+IMPLEMENT_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
+
+/* Multistring types */
+
+IMPLEMENT_ASN1_MSTRING(ASN1_PRINTABLE, B_ASN1_PRINTABLE)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, ASN1_PRINTABLE)
+
+IMPLEMENT_ASN1_MSTRING(DISPLAYTEXT, B_ASN1_DISPLAYTEXT)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, DISPLAYTEXT)
+
+IMPLEMENT_ASN1_MSTRING(DIRECTORYSTRING, B_ASN1_DIRECTORYSTRING)
+IMPLEMENT_ASN1_FUNCTIONS_name(ASN1_STRING, DIRECTORYSTRING)
+
+/* Three separate BOOLEAN type: normal, DEFAULT TRUE and DEFAULT FALSE */
+IMPLEMENT_ASN1_TYPE_ex(ASN1_BOOLEAN, ASN1_BOOLEAN, -1)
+IMPLEMENT_ASN1_TYPE_ex(ASN1_TBOOLEAN, ASN1_BOOLEAN, 1)
+IMPLEMENT_ASN1_TYPE_ex(ASN1_FBOOLEAN, ASN1_BOOLEAN, 0)
+
+/* Special, OCTET STRING with indefinite length constructed support */
+
+IMPLEMENT_ASN1_TYPE_ex(ASN1_OCTET_STRING_NDEF, ASN1_OCTET_STRING, ASN1_TFLG_NDEF)
+
+ASN1_ITEM_TEMPLATE(ASN1_SEQUENCE_ANY) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, ASN1_SEQUENCE_ANY, ASN1_ANY)
+ASN1_ITEM_TEMPLATE_END(ASN1_SEQUENCE_ANY)
+
+ASN1_ITEM_TEMPLATE(ASN1_SET_ANY) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, ASN1_SET_ANY, ASN1_ANY)
+ASN1_ITEM_TEMPLATE_END(ASN1_SET_ANY)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ASN1_SEQUENCE_ANY, ASN1_SET_ANY, ASN1_SET_ANY)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c
new file mode 100644
index 0000000..341ed5e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c	
@@ -0,0 +1,280 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+
+/* Utility functions for manipulating fields and offsets */
+
+/* Add 'offset' to 'addr' */
+#define offset2ptr(addr, offset) (void *)(((char *)(addr)) + (offset))
+
+/* Given an ASN1_ITEM CHOICE type return the selector value */
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  int *sel = offset2ptr(*pval, it->utype);
+  return *sel;
+}
+
+/* Given an ASN1_ITEM CHOICE type set the selector value, return old value. */
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
+                             const ASN1_ITEM *it) {
+  int *sel, ret;
+  sel = offset2ptr(*pval, it->utype);
+  ret = *sel;
+  *sel = value;
+  return ret;
+}
+
+static CRYPTO_refcount_t *asn1_get_references(ASN1_VALUE **pval,
+                                              const ASN1_ITEM *it) {
+  if (it->itype != ASN1_ITYPE_SEQUENCE &&
+      it->itype != ASN1_ITYPE_NDEF_SEQUENCE) {
+    return NULL;
+  }
+  const ASN1_AUX *aux = it->funcs;
+  if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT)) {
+    return NULL;
+  }
+  return offset2ptr(*pval, aux->ref_offset);
+}
+
+void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  CRYPTO_refcount_t *references = asn1_get_references(pval, it);
+  if (references != NULL) {
+    *references = 1;
+  }
+}
+
+int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  CRYPTO_refcount_t *references = asn1_get_references(pval, it);
+  if (references != NULL) {
+    return CRYPTO_refcount_dec_and_test_zero(references);
+  }
+  return 1;
+}
+
+static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  const ASN1_AUX *aux;
+  if (!pval || !*pval) {
+    return NULL;
+  }
+  aux = it->funcs;
+  if (!aux || !(aux->flags & ASN1_AFLG_ENCODING)) {
+    return NULL;
+  }
+  return offset2ptr(*pval, aux->enc_offset);
+}
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (enc) {
+    enc->enc = NULL;
+    enc->len = 0;
+    enc->alias_only = 0;
+    enc->alias_only_on_next_parse = 0;
+    enc->modified = 1;
+  }
+}
+
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (enc) {
+    if (enc->enc && !enc->alias_only) {
+      OPENSSL_free(enc->enc);
+    }
+    enc->enc = NULL;
+    enc->len = 0;
+    enc->alias_only = 0;
+    enc->alias_only_on_next_parse = 0;
+    enc->modified = 1;
+  }
+}
+
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
+                  const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (!enc) {
+    return 1;
+  }
+
+  if (!enc->alias_only) {
+    OPENSSL_free(enc->enc);
+  }
+
+  enc->alias_only = enc->alias_only_on_next_parse;
+  enc->alias_only_on_next_parse = 0;
+
+  if (enc->alias_only) {
+    enc->enc = (uint8_t *) in;
+  } else {
+    enc->enc = OPENSSL_malloc(inlen);
+    if (!enc->enc) {
+      return 0;
+    }
+    OPENSSL_memcpy(enc->enc, in, inlen);
+  }
+
+  enc->len = inlen;
+  enc->modified = 0;
+
+  return 1;
+}
+
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
+                     const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (!enc || enc->modified) {
+    return 0;
+  }
+  if (out) {
+    OPENSSL_memcpy(*out, enc->enc, enc->len);
+    *out += enc->len;
+  }
+  if (len) {
+    *len = enc->len;
+  }
+  return 1;
+}
+
+/* Given an ASN1_TEMPLATE get a pointer to a field */
+ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) {
+  ASN1_VALUE **pvaltmp;
+  if (tt->flags & ASN1_TFLG_COMBINE) {
+    return pval;
+  }
+  pvaltmp = offset2ptr(*pval, tt->offset);
+  /* NOTE for BOOLEAN types the field is just a plain int so we can't return
+   * int **, so settle for (int *). */
+  return pvaltmp;
+}
+
+/* Handle ANY DEFINED BY template, find the selector, look up the relevant
+ * ASN1_TEMPLATE in the table and return it. */
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
+                                 int nullerr) {
+  const ASN1_ADB *adb;
+  const ASN1_ADB_TABLE *atbl;
+  long selector;
+  ASN1_VALUE **sfld;
+  int i;
+  if (!(tt->flags & ASN1_TFLG_ADB_MASK)) {
+    return tt;
+  }
+
+  /* Else ANY DEFINED BY ... get the table */
+  adb = ASN1_ADB_ptr(tt->item);
+
+  /* Get the selector field */
+  sfld = offset2ptr(*pval, adb->offset);
+
+  /* Check if NULL */
+  if (*sfld == NULL) {
+    if (!adb->null_tt) {
+      goto err;
+    }
+    return adb->null_tt;
+  }
+
+  /* Convert type to a long:
+   * NB: don't check for NID_undef here because it
+   * might be a legitimate value in the table */
+  if (tt->flags & ASN1_TFLG_ADB_OID) {
+    selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
+  } else {
+    selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
+  }
+
+  /* Try to find matching entry in table Maybe should check application types
+   * first to allow application override? Might also be useful to have a flag
+   * which indicates table is sorted and we can do a binary search. For now
+   * stick to a linear search. */
+
+  for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++) {
+    if (atbl->value == selector) {
+      return &atbl->tt;
+    }
+  }
+
+  /* FIXME: need to search application table too */
+
+  /* No match, return default type */
+  if (!adb->default_tt) {
+    goto err;
+  }
+  return adb->default_tt;
+
+err:
+  /* FIXME: should log the value or OID of unsupported type */
+  if (nullerr) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+  }
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c.grpc_back
new file mode 100644
index 0000000..a7516f6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/tasn_utl.c.grpc_back	
@@ -0,0 +1,280 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/err.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+
+/* Utility functions for manipulating fields and offsets */
+
+/* Add 'offset' to 'addr' */
+#define offset2ptr(addr, offset) (void *)(((char *)(addr)) + (offset))
+
+/* Given an ASN1_ITEM CHOICE type return the selector value */
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  int *sel = offset2ptr(*pval, it->utype);
+  return *sel;
+}
+
+/* Given an ASN1_ITEM CHOICE type set the selector value, return old value. */
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
+                             const ASN1_ITEM *it) {
+  int *sel, ret;
+  sel = offset2ptr(*pval, it->utype);
+  ret = *sel;
+  *sel = value;
+  return ret;
+}
+
+static CRYPTO_refcount_t *asn1_get_references(ASN1_VALUE **pval,
+                                              const ASN1_ITEM *it) {
+  if (it->itype != ASN1_ITYPE_SEQUENCE &&
+      it->itype != ASN1_ITYPE_NDEF_SEQUENCE) {
+    return NULL;
+  }
+  const ASN1_AUX *aux = it->funcs;
+  if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT)) {
+    return NULL;
+  }
+  return offset2ptr(*pval, aux->ref_offset);
+}
+
+void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  CRYPTO_refcount_t *references = asn1_get_references(pval, it);
+  if (references != NULL) {
+    *references = 1;
+  }
+}
+
+int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  CRYPTO_refcount_t *references = asn1_get_references(pval, it);
+  if (references != NULL) {
+    return CRYPTO_refcount_dec_and_test_zero(references);
+  }
+  return 1;
+}
+
+static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  const ASN1_AUX *aux;
+  if (!pval || !*pval) {
+    return NULL;
+  }
+  aux = it->funcs;
+  if (!aux || !(aux->flags & ASN1_AFLG_ENCODING)) {
+    return NULL;
+  }
+  return offset2ptr(*pval, aux->enc_offset);
+}
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (enc) {
+    enc->enc = NULL;
+    enc->len = 0;
+    enc->alias_only = 0;
+    enc->alias_only_on_next_parse = 0;
+    enc->modified = 1;
+  }
+}
+
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (enc) {
+    if (enc->enc && !enc->alias_only) {
+      OPENSSL_free(enc->enc);
+    }
+    enc->enc = NULL;
+    enc->len = 0;
+    enc->alias_only = 0;
+    enc->alias_only_on_next_parse = 0;
+    enc->modified = 1;
+  }
+}
+
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
+                  const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (!enc) {
+    return 1;
+  }
+
+  if (!enc->alias_only) {
+    OPENSSL_free(enc->enc);
+  }
+
+  enc->alias_only = enc->alias_only_on_next_parse;
+  enc->alias_only_on_next_parse = 0;
+
+  if (enc->alias_only) {
+    enc->enc = (uint8_t *) in;
+  } else {
+    enc->enc = OPENSSL_malloc(inlen);
+    if (!enc->enc) {
+      return 0;
+    }
+    OPENSSL_memcpy(enc->enc, in, inlen);
+  }
+
+  enc->len = inlen;
+  enc->modified = 0;
+
+  return 1;
+}
+
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
+                     const ASN1_ITEM *it) {
+  ASN1_ENCODING *enc;
+  enc = asn1_get_enc_ptr(pval, it);
+  if (!enc || enc->modified) {
+    return 0;
+  }
+  if (out) {
+    OPENSSL_memcpy(*out, enc->enc, enc->len);
+    *out += enc->len;
+  }
+  if (len) {
+    *len = enc->len;
+  }
+  return 1;
+}
+
+/* Given an ASN1_TEMPLATE get a pointer to a field */
+ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) {
+  ASN1_VALUE **pvaltmp;
+  if (tt->flags & ASN1_TFLG_COMBINE) {
+    return pval;
+  }
+  pvaltmp = offset2ptr(*pval, tt->offset);
+  /* NOTE for BOOLEAN types the field is just a plain int so we can't return
+   * int **, so settle for (int *). */
+  return pvaltmp;
+}
+
+/* Handle ANY DEFINED BY template, find the selector, look up the relevant
+ * ASN1_TEMPLATE in the table and return it. */
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
+                                 int nullerr) {
+  const ASN1_ADB *adb;
+  const ASN1_ADB_TABLE *atbl;
+  long selector;
+  ASN1_VALUE **sfld;
+  int i;
+  if (!(tt->flags & ASN1_TFLG_ADB_MASK)) {
+    return tt;
+  }
+
+  /* Else ANY DEFINED BY ... get the table */
+  adb = ASN1_ADB_ptr(tt->item);
+
+  /* Get the selector field */
+  sfld = offset2ptr(*pval, adb->offset);
+
+  /* Check if NULL */
+  if (*sfld == NULL) {
+    if (!adb->null_tt) {
+      goto err;
+    }
+    return adb->null_tt;
+  }
+
+  /* Convert type to a long:
+   * NB: don't check for NID_undef here because it
+   * might be a legitimate value in the table */
+  if (tt->flags & ASN1_TFLG_ADB_OID) {
+    selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
+  } else {
+    selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
+  }
+
+  /* Try to find matching entry in table Maybe should check application types
+   * first to allow application override? Might also be useful to have a flag
+   * which indicates table is sorted and we can do a binary search. For now
+   * stick to a linear search. */
+
+  for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++) {
+    if (atbl->value == selector) {
+      return &atbl->tt;
+    }
+  }
+
+  /* FIXME: need to search application table too */
+
+  /* No match, return default type */
+  if (!adb->default_tt) {
+    goto err;
+  }
+  return adb->default_tt;
+
+err:
+  /* FIXME: should log the value or OID of unsupported type */
+  if (nullerr) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+  }
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c
new file mode 100644
index 0000000..3efd43e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c	
@@ -0,0 +1,206 @@
+/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
+ * project 2001.
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2008.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#if !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE 201410L  /* for gmtime_r */
+#endif
+
+#include "asn1_locl.h"
+
+#include <time.h>
+
+
+#define SECS_PER_DAY (24 * 60 * 60)
+
+struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result) {
+#if defined(OPENSSL_WINDOWS)
+  if (gmtime_s(result, time)) {
+    return NULL;
+  }
+  return result;
+#else
+  return gmtime_r(time, result);
+#endif
+}
+
+/* Convert date to and from julian day Uses Fliegel & Van Flandern algorithm */
+static long date_to_julian(int y, int m, int d) {
+  return (1461 * (y + 4800 + (m - 14) / 12)) / 4 +
+         (367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 -
+         (3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + d - 32075;
+}
+
+static void julian_to_date(long jd, int *y, int *m, int *d) {
+  long L = jd + 68569;
+  long n = (4 * L) / 146097;
+  long i, j;
+
+  L = L - (146097 * n + 3) / 4;
+  i = (4000 * (L + 1)) / 1461001;
+  L = L - (1461 * i) / 4 + 31;
+  j = (80 * L) / 2447;
+  *d = L - (2447 * j) / 80;
+  L = j / 11;
+  *m = j + 2 - (12 * L);
+  *y = 100 * (n - 49) + i + L;
+}
+
+/* Convert tm structure and offset into julian day and seconds */
+static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
+                      long *pday, int *psec) {
+  int offset_hms, offset_day;
+  long time_jd;
+  int time_year, time_month, time_day;
+  /* split offset into days and day seconds */
+  offset_day = offset_sec / SECS_PER_DAY;
+  /* Avoid sign issues with % operator */
+  offset_hms = offset_sec - (offset_day * SECS_PER_DAY);
+  offset_day += off_day;
+  /* Add current time seconds to offset */
+  offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec;
+  /* Adjust day seconds if overflow */
+  if (offset_hms >= SECS_PER_DAY) {
+    offset_day++;
+    offset_hms -= SECS_PER_DAY;
+  } else if (offset_hms < 0) {
+    offset_day--;
+    offset_hms += SECS_PER_DAY;
+  }
+
+  /* Convert date of time structure into a Julian day number. */
+
+  time_year = tm->tm_year + 1900;
+  time_month = tm->tm_mon + 1;
+  time_day = tm->tm_mday;
+
+  time_jd = date_to_julian(time_year, time_month, time_day);
+
+  /* Work out Julian day of new date */
+  time_jd += offset_day;
+
+  if (time_jd < 0) {
+    return 0;
+  }
+
+  *pday = time_jd;
+  *psec = offset_hms;
+  return 1;
+}
+
+int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) {
+  int time_sec, time_year, time_month, time_day;
+  long time_jd;
+
+  /* Convert time and offset into julian day and seconds */
+  if (!julian_adj(tm, off_day, offset_sec, &time_jd, &time_sec)) {
+    return 0;
+  }
+
+  /* Convert Julian day back to date */
+
+  julian_to_date(time_jd, &time_year, &time_month, &time_day);
+
+  if (time_year < 1900 || time_year > 9999) {
+    return 0;
+  }
+
+  /* Update tm structure */
+
+  tm->tm_year = time_year - 1900;
+  tm->tm_mon = time_month - 1;
+  tm->tm_mday = time_day;
+
+  tm->tm_hour = time_sec / 3600;
+  tm->tm_min = (time_sec / 60) % 60;
+  tm->tm_sec = time_sec % 60;
+
+  return 1;
+}
+
+int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
+                        const struct tm *to) {
+  int from_sec, to_sec, diff_sec;
+  long from_jd, to_jd, diff_day;
+
+  if (!julian_adj(from, 0, 0, &from_jd, &from_sec)) {
+    return 0;
+  }
+  if (!julian_adj(to, 0, 0, &to_jd, &to_sec)) {
+    return 0;
+  }
+
+  diff_day = to_jd - from_jd;
+  diff_sec = to_sec - from_sec;
+  /* Adjust differences so both positive or both negative */
+  if (diff_day > 0 && diff_sec < 0) {
+    diff_day--;
+    diff_sec += SECS_PER_DAY;
+  }
+  if (diff_day < 0 && diff_sec > 0) {
+    diff_day++;
+    diff_sec -= SECS_PER_DAY;
+  }
+
+  if (out_days) {
+    *out_days = (int)diff_day;
+  }
+  if (out_secs) {
+    *out_secs = diff_sec;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c.grpc_back
new file mode 100644
index 0000000..3efd43e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/asn1/time_support.c.grpc_back	
@@ -0,0 +1,206 @@
+/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
+ * project 2001.
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2008.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#if !defined(_POSIX_C_SOURCE)
+#define _POSIX_C_SOURCE 201410L  /* for gmtime_r */
+#endif
+
+#include "asn1_locl.h"
+
+#include <time.h>
+
+
+#define SECS_PER_DAY (24 * 60 * 60)
+
+struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result) {
+#if defined(OPENSSL_WINDOWS)
+  if (gmtime_s(result, time)) {
+    return NULL;
+  }
+  return result;
+#else
+  return gmtime_r(time, result);
+#endif
+}
+
+/* Convert date to and from julian day Uses Fliegel & Van Flandern algorithm */
+static long date_to_julian(int y, int m, int d) {
+  return (1461 * (y + 4800 + (m - 14) / 12)) / 4 +
+         (367 * (m - 2 - 12 * ((m - 14) / 12))) / 12 -
+         (3 * ((y + 4900 + (m - 14) / 12) / 100)) / 4 + d - 32075;
+}
+
+static void julian_to_date(long jd, int *y, int *m, int *d) {
+  long L = jd + 68569;
+  long n = (4 * L) / 146097;
+  long i, j;
+
+  L = L - (146097 * n + 3) / 4;
+  i = (4000 * (L + 1)) / 1461001;
+  L = L - (1461 * i) / 4 + 31;
+  j = (80 * L) / 2447;
+  *d = L - (2447 * j) / 80;
+  L = j / 11;
+  *m = j + 2 - (12 * L);
+  *y = 100 * (n - 49) + i + L;
+}
+
+/* Convert tm structure and offset into julian day and seconds */
+static int julian_adj(const struct tm *tm, int off_day, long offset_sec,
+                      long *pday, int *psec) {
+  int offset_hms, offset_day;
+  long time_jd;
+  int time_year, time_month, time_day;
+  /* split offset into days and day seconds */
+  offset_day = offset_sec / SECS_PER_DAY;
+  /* Avoid sign issues with % operator */
+  offset_hms = offset_sec - (offset_day * SECS_PER_DAY);
+  offset_day += off_day;
+  /* Add current time seconds to offset */
+  offset_hms += tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec;
+  /* Adjust day seconds if overflow */
+  if (offset_hms >= SECS_PER_DAY) {
+    offset_day++;
+    offset_hms -= SECS_PER_DAY;
+  } else if (offset_hms < 0) {
+    offset_day--;
+    offset_hms += SECS_PER_DAY;
+  }
+
+  /* Convert date of time structure into a Julian day number. */
+
+  time_year = tm->tm_year + 1900;
+  time_month = tm->tm_mon + 1;
+  time_day = tm->tm_mday;
+
+  time_jd = date_to_julian(time_year, time_month, time_day);
+
+  /* Work out Julian day of new date */
+  time_jd += offset_day;
+
+  if (time_jd < 0) {
+    return 0;
+  }
+
+  *pday = time_jd;
+  *psec = offset_hms;
+  return 1;
+}
+
+int OPENSSL_gmtime_adj(struct tm *tm, int off_day, long offset_sec) {
+  int time_sec, time_year, time_month, time_day;
+  long time_jd;
+
+  /* Convert time and offset into julian day and seconds */
+  if (!julian_adj(tm, off_day, offset_sec, &time_jd, &time_sec)) {
+    return 0;
+  }
+
+  /* Convert Julian day back to date */
+
+  julian_to_date(time_jd, &time_year, &time_month, &time_day);
+
+  if (time_year < 1900 || time_year > 9999) {
+    return 0;
+  }
+
+  /* Update tm structure */
+
+  tm->tm_year = time_year - 1900;
+  tm->tm_mon = time_month - 1;
+  tm->tm_mday = time_day;
+
+  tm->tm_hour = time_sec / 3600;
+  tm->tm_min = (time_sec / 60) % 60;
+  tm->tm_sec = time_sec % 60;
+
+  return 1;
+}
+
+int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
+                        const struct tm *to) {
+  int from_sec, to_sec, diff_sec;
+  long from_jd, to_jd, diff_day;
+
+  if (!julian_adj(from, 0, 0, &from_jd, &from_sec)) {
+    return 0;
+  }
+  if (!julian_adj(to, 0, 0, &to_jd, &to_sec)) {
+    return 0;
+  }
+
+  diff_day = to_jd - from_jd;
+  diff_sec = to_sec - from_sec;
+  /* Adjust differences so both positive or both negative */
+  if (diff_day > 0 && diff_sec < 0) {
+    diff_day--;
+    diff_sec += SECS_PER_DAY;
+  }
+  if (diff_day < 0 && diff_sec > 0) {
+    diff_day++;
+    diff_sec -= SECS_PER_DAY;
+  }
+
+  if (out_days) {
+    *out_days = (int)diff_day;
+  }
+  if (out_secs) {
+    *out_secs = diff_sec;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c
new file mode 100644
index 0000000..16a2382
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c	
@@ -0,0 +1,466 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/base64.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/type_check.h>
+
+#include "../internal.h"
+
+
+// constant_time_lt_args_8 behaves like |constant_time_lt_8| but takes |uint8_t|
+// arguments for a slightly simpler implementation.
+static inline uint8_t constant_time_lt_args_8(uint8_t a, uint8_t b) {
+  crypto_word_t aw = a;
+  crypto_word_t bw = b;
+  // |crypto_word_t| is larger than |uint8_t|, so |aw| and |bw| have the same
+  // MSB. |aw| < |bw| iff MSB(|aw| - |bw|) is 1.
+  return constant_time_msb_w(aw - bw);
+}
+
+// constant_time_in_range_8 returns |CONSTTIME_TRUE_8| if |min| <= |a| <= |max|
+// and |CONSTTIME_FALSE_8| otherwise.
+static inline uint8_t constant_time_in_range_8(uint8_t a, uint8_t min,
+                                               uint8_t max) {
+  a -= min;
+  return constant_time_lt_args_8(a, max - min + 1);
+}
+
+// Encoding.
+
+static uint8_t conv_bin2ascii(uint8_t a) {
+  // Since PEM is sometimes used to carry private keys, we encode base64 data
+  // itself in constant-time.
+  a &= 0x3f;
+  uint8_t ret = constant_time_select_8(constant_time_eq_8(a, 62), '+', '/');
+  ret =
+      constant_time_select_8(constant_time_lt_args_8(a, 62), a - 52 + '0', ret);
+  ret =
+      constant_time_select_8(constant_time_lt_args_8(a, 52), a - 26 + 'a', ret);
+  ret = constant_time_select_8(constant_time_lt_args_8(a, 26), a + 'A', ret);
+  return ret;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_ENCODE_CTX *)(NULL))->data) % 3 == 0,
+                      "data length must be a multiple of base64 chunk size");
+
+int EVP_EncodedLength(size_t *out_len, size_t len) {
+  if (len + 2 < len) {
+    return 0;
+  }
+  len += 2;
+  len /= 3;
+
+  if (((len << 2) >> 2) != len) {
+    return 0;
+  }
+  len <<= 2;
+
+  if (len + 1 < len) {
+    return 0;
+  }
+  len++;
+
+  *out_len = len;
+  return 1;
+}
+
+void EVP_EncodeInit(EVP_ENCODE_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
+}
+
+void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, size_t in_len) {
+  size_t total = 0;
+
+  *out_len = 0;
+  if (in_len == 0) {
+    return;
+  }
+
+  assert(ctx->data_used < sizeof(ctx->data));
+
+  if (sizeof(ctx->data) - ctx->data_used > in_len) {
+    OPENSSL_memcpy(&ctx->data[ctx->data_used], in, in_len);
+    ctx->data_used += (unsigned)in_len;
+    return;
+  }
+
+  if (ctx->data_used != 0) {
+    const size_t todo = sizeof(ctx->data) - ctx->data_used;
+    OPENSSL_memcpy(&ctx->data[ctx->data_used], in, todo);
+    in += todo;
+    in_len -= todo;
+
+    size_t encoded = EVP_EncodeBlock(out, ctx->data, sizeof(ctx->data));
+    ctx->data_used = 0;
+
+    out += encoded;
+    *(out++) = '\n';
+    *out = '\0';
+
+    total = encoded + 1;
+  }
+
+  while (in_len >= sizeof(ctx->data)) {
+    size_t encoded = EVP_EncodeBlock(out, in, sizeof(ctx->data));
+    in += sizeof(ctx->data);
+    in_len -= sizeof(ctx->data);
+
+    out += encoded;
+    *(out++) = '\n';
+    *out = '\0';
+
+    if (total + encoded + 1 < total) {
+      *out_len = 0;
+      return;
+    }
+
+    total += encoded + 1;
+  }
+
+  if (in_len != 0) {
+    OPENSSL_memcpy(ctx->data, in, in_len);
+  }
+
+  ctx->data_used = (unsigned)in_len;
+
+  if (total > INT_MAX) {
+    // We cannot signal an error, but we can at least avoid making *out_len
+    // negative.
+    total = 0;
+  }
+  *out_len = (int)total;
+}
+
+void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
+  if (ctx->data_used == 0) {
+    *out_len = 0;
+    return;
+  }
+
+  size_t encoded = EVP_EncodeBlock(out, ctx->data, ctx->data_used);
+  out[encoded++] = '\n';
+  out[encoded] = '\0';
+  ctx->data_used = 0;
+
+  // ctx->data_used is bounded by sizeof(ctx->data), so this does not
+  // overflow.
+  assert(encoded <= INT_MAX);
+  *out_len = (int)encoded;
+}
+
+size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
+  uint32_t l;
+  size_t remaining = src_len, ret = 0;
+
+  while (remaining) {
+    if (remaining >= 3) {
+      l = (((uint32_t)src[0]) << 16L) | (((uint32_t)src[1]) << 8L) | src[2];
+      *(dst++) = conv_bin2ascii(l >> 18L);
+      *(dst++) = conv_bin2ascii(l >> 12L);
+      *(dst++) = conv_bin2ascii(l >> 6L);
+      *(dst++) = conv_bin2ascii(l);
+      remaining -= 3;
+    } else {
+      l = ((uint32_t)src[0]) << 16L;
+      if (remaining == 2) {
+        l |= ((uint32_t)src[1] << 8L);
+      }
+
+      *(dst++) = conv_bin2ascii(l >> 18L);
+      *(dst++) = conv_bin2ascii(l >> 12L);
+      *(dst++) = (remaining == 1) ? '=' : conv_bin2ascii(l >> 6L);
+      *(dst++) = '=';
+      remaining = 0;
+    }
+    ret += 4;
+    src += 3;
+  }
+
+  *dst = '\0';
+  return ret;
+}
+
+
+// Decoding.
+
+int EVP_DecodedLength(size_t *out_len, size_t len) {
+  if (len % 4 != 0) {
+    return 0;
+  }
+
+  *out_len = (len / 4) * 3;
+  return 1;
+}
+
+void EVP_DecodeInit(EVP_ENCODE_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
+}
+
+static uint8_t base64_ascii_to_bin(uint8_t a) {
+  // Since PEM is sometimes used to carry private keys, we decode base64 data
+  // itself in constant-time.
+  const uint8_t is_upper = constant_time_in_range_8(a, 'A', 'Z');
+  const uint8_t is_lower = constant_time_in_range_8(a, 'a', 'z');
+  const uint8_t is_digit = constant_time_in_range_8(a, '0', '9');
+  const uint8_t is_plus = constant_time_eq_8(a, '+');
+  const uint8_t is_slash = constant_time_eq_8(a, '/');
+  const uint8_t is_equals = constant_time_eq_8(a, '=');
+
+  uint8_t ret = 0xff;  // 0xff signals invalid.
+  ret = constant_time_select_8(is_upper, a - 'A', ret);       // [0,26)
+  ret = constant_time_select_8(is_lower, a - 'a' + 26, ret);  // [26,52)
+  ret = constant_time_select_8(is_digit, a - '0' + 52, ret);  // [52,62)
+  ret = constant_time_select_8(is_plus, 62, ret);
+  ret = constant_time_select_8(is_slash, 63, ret);
+  // Padding maps to zero, to be further handled by the caller.
+  ret = constant_time_select_8(is_equals, 0, ret);
+  return ret;
+}
+
+// base64_decode_quad decodes a single “quad” (i.e. four characters) of base64
+// data and writes up to three bytes to |out|. It sets |*out_num_bytes| to the
+// number of bytes written, which will be less than three if the quad ended
+// with padding.  It returns one on success or zero on error.
+static int base64_decode_quad(uint8_t *out, size_t *out_num_bytes,
+                              const uint8_t *in) {
+  const uint8_t a = base64_ascii_to_bin(in[0]);
+  const uint8_t b = base64_ascii_to_bin(in[1]);
+  const uint8_t c = base64_ascii_to_bin(in[2]);
+  const uint8_t d = base64_ascii_to_bin(in[3]);
+  if (a == 0xff || b == 0xff || c == 0xff || d == 0xff) {
+    return 0;
+  }
+
+  const uint32_t v = ((uint32_t)a) << 18 | ((uint32_t)b) << 12 |
+                     ((uint32_t)c) << 6 | (uint32_t)d;
+
+  const unsigned padding_pattern = (in[0] == '=') << 3 |
+                                   (in[1] == '=') << 2 |
+                                   (in[2] == '=') << 1 |
+                                   (in[3] == '=');
+
+  switch (padding_pattern) {
+    case 0:
+      // The common case of no padding.
+      *out_num_bytes = 3;
+      out[0] = v >> 16;
+      out[1] = v >> 8;
+      out[2] = v;
+      break;
+
+    case 1:  // xxx=
+      *out_num_bytes = 2;
+      out[0] = v >> 16;
+      out[1] = v >> 8;
+      break;
+
+    case 3:  // xx==
+      *out_num_bytes = 1;
+      out[0] = v >> 16;
+      break;
+
+    default:
+      return 0;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
+                     const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+
+  if (ctx->error_encountered) {
+    return -1;
+  }
+
+  size_t bytes_out = 0, i;
+  for (i = 0; i < in_len; i++) {
+    const char c = in[i];
+    switch (c) {
+      case ' ':
+      case '\t':
+      case '\r':
+      case '\n':
+        continue;
+    }
+
+    if (ctx->eof_seen) {
+      ctx->error_encountered = 1;
+      return -1;
+    }
+
+    ctx->data[ctx->data_used++] = c;
+    if (ctx->data_used == 4) {
+      size_t num_bytes_resulting;
+      if (!base64_decode_quad(out, &num_bytes_resulting, ctx->data)) {
+        ctx->error_encountered = 1;
+        return -1;
+      }
+
+      ctx->data_used = 0;
+      bytes_out += num_bytes_resulting;
+      out += num_bytes_resulting;
+
+      if (num_bytes_resulting < 3) {
+        ctx->eof_seen = 1;
+      }
+    }
+  }
+
+  if (bytes_out > INT_MAX) {
+    ctx->error_encountered = 1;
+    *out_len = 0;
+    return -1;
+  }
+  *out_len = (int)bytes_out;
+
+  if (ctx->eof_seen) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
+  *out_len = 0;
+  if (ctx->error_encountered || ctx->data_used != 0) {
+    return -1;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeBase64(uint8_t *out, size_t *out_len, size_t max_out,
+                     const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+
+  if (in_len % 4 != 0) {
+    return 0;
+  }
+
+  size_t max_len;
+  if (!EVP_DecodedLength(&max_len, in_len) ||
+      max_out < max_len) {
+    return 0;
+  }
+
+  size_t i, bytes_out = 0;
+  for (i = 0; i < in_len; i += 4) {
+    size_t num_bytes_resulting;
+
+    if (!base64_decode_quad(out, &num_bytes_resulting, &in[i])) {
+      return 0;
+    }
+
+    bytes_out += num_bytes_resulting;
+    out += num_bytes_resulting;
+    if (num_bytes_resulting != 3 && i != in_len - 4) {
+      return 0;
+    }
+  }
+
+  *out_len = bytes_out;
+  return 1;
+}
+
+int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
+  // Trim spaces and tabs from the beginning of the input.
+  while (src_len > 0) {
+    if (src[0] != ' ' && src[0] != '\t') {
+      break;
+    }
+
+    src++;
+    src_len--;
+  }
+
+  // Trim newlines, spaces and tabs from the end of the line.
+  while (src_len > 0) {
+    switch (src[src_len-1]) {
+      case ' ':
+      case '\t':
+      case '\r':
+      case '\n':
+        src_len--;
+        continue;
+    }
+
+    break;
+  }
+
+  size_t dst_len;
+  if (!EVP_DecodedLength(&dst_len, src_len) ||
+      dst_len > INT_MAX ||
+      !EVP_DecodeBase64(dst, &dst_len, dst_len, src, src_len)) {
+    return -1;
+  }
+
+  // EVP_DecodeBlock does not take padding into account, so put the
+  // NULs back in... so the caller can strip them back out.
+  while (dst_len % 3 != 0) {
+    dst[dst_len++] = '\0';
+  }
+  assert(dst_len <= INT_MAX);
+
+  return (int)dst_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c.grpc_back
new file mode 100644
index 0000000..349452d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/base64/base64.c.grpc_back	
@@ -0,0 +1,466 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/base64.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/type_check.h>
+
+#include "../internal.h"
+
+
+// constant_time_lt_args_8 behaves like |constant_time_lt_8| but takes |uint8_t|
+// arguments for a slightly simpler implementation.
+static inline uint8_t constant_time_lt_args_8(uint8_t a, uint8_t b) {
+  crypto_word_t aw = a;
+  crypto_word_t bw = b;
+  // |crypto_word_t| is larger than |uint8_t|, so |aw| and |bw| have the same
+  // MSB. |aw| < |bw| iff MSB(|aw| - |bw|) is 1.
+  return constant_time_msb_w(aw - bw);
+}
+
+// constant_time_in_range_8 returns |CONSTTIME_TRUE_8| if |min| <= |a| <= |max|
+// and |CONSTTIME_FALSE_8| otherwise.
+static inline uint8_t constant_time_in_range_8(uint8_t a, uint8_t min,
+                                               uint8_t max) {
+  a -= min;
+  return constant_time_lt_args_8(a, max - min + 1);
+}
+
+// Encoding.
+
+static uint8_t conv_bin2ascii(uint8_t a) {
+  // Since PEM is sometimes used to carry private keys, we encode base64 data
+  // itself in constant-time.
+  a &= 0x3f;
+  uint8_t ret = constant_time_select_8(constant_time_eq_8(a, 62), '+', '/');
+  ret =
+      constant_time_select_8(constant_time_lt_args_8(a, 62), a - 52 + '0', ret);
+  ret =
+      constant_time_select_8(constant_time_lt_args_8(a, 52), a - 26 + 'a', ret);
+  ret = constant_time_select_8(constant_time_lt_args_8(a, 26), a + 'A', ret);
+  return ret;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_ENCODE_CTX *)(NULL))->data) % 3 == 0,
+                      "data length must be a multiple of base64 chunk size");
+
+int EVP_EncodedLength(size_t *out_len, size_t len) {
+  if (len + 2 < len) {
+    return 0;
+  }
+  len += 2;
+  len /= 3;
+
+  if (((len << 2) >> 2) != len) {
+    return 0;
+  }
+  len <<= 2;
+
+  if (len + 1 < len) {
+    return 0;
+  }
+  len++;
+
+  *out_len = len;
+  return 1;
+}
+
+void EVP_EncodeInit(EVP_ENCODE_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
+}
+
+void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, size_t in_len) {
+  size_t total = 0;
+
+  *out_len = 0;
+  if (in_len == 0) {
+    return;
+  }
+
+  assert(ctx->data_used < sizeof(ctx->data));
+
+  if (sizeof(ctx->data) - ctx->data_used > in_len) {
+    OPENSSL_memcpy(&ctx->data[ctx->data_used], in, in_len);
+    ctx->data_used += (unsigned)in_len;
+    return;
+  }
+
+  if (ctx->data_used != 0) {
+    const size_t todo = sizeof(ctx->data) - ctx->data_used;
+    OPENSSL_memcpy(&ctx->data[ctx->data_used], in, todo);
+    in += todo;
+    in_len -= todo;
+
+    size_t encoded = EVP_EncodeBlock(out, ctx->data, sizeof(ctx->data));
+    ctx->data_used = 0;
+
+    out += encoded;
+    *(out++) = '\n';
+    *out = '\0';
+
+    total = encoded + 1;
+  }
+
+  while (in_len >= sizeof(ctx->data)) {
+    size_t encoded = EVP_EncodeBlock(out, in, sizeof(ctx->data));
+    in += sizeof(ctx->data);
+    in_len -= sizeof(ctx->data);
+
+    out += encoded;
+    *(out++) = '\n';
+    *out = '\0';
+
+    if (total + encoded + 1 < total) {
+      *out_len = 0;
+      return;
+    }
+
+    total += encoded + 1;
+  }
+
+  if (in_len != 0) {
+    OPENSSL_memcpy(ctx->data, in, in_len);
+  }
+
+  ctx->data_used = (unsigned)in_len;
+
+  if (total > INT_MAX) {
+    // We cannot signal an error, but we can at least avoid making *out_len
+    // negative.
+    total = 0;
+  }
+  *out_len = (int)total;
+}
+
+void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
+  if (ctx->data_used == 0) {
+    *out_len = 0;
+    return;
+  }
+
+  size_t encoded = EVP_EncodeBlock(out, ctx->data, ctx->data_used);
+  out[encoded++] = '\n';
+  out[encoded] = '\0';
+  ctx->data_used = 0;
+
+  // ctx->data_used is bounded by sizeof(ctx->data), so this does not
+  // overflow.
+  assert(encoded <= INT_MAX);
+  *out_len = (int)encoded;
+}
+
+size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
+  uint32_t l;
+  size_t remaining = src_len, ret = 0;
+
+  while (remaining) {
+    if (remaining >= 3) {
+      l = (((uint32_t)src[0]) << 16L) | (((uint32_t)src[1]) << 8L) | src[2];
+      *(dst++) = conv_bin2ascii(l >> 18L);
+      *(dst++) = conv_bin2ascii(l >> 12L);
+      *(dst++) = conv_bin2ascii(l >> 6L);
+      *(dst++) = conv_bin2ascii(l);
+      remaining -= 3;
+    } else {
+      l = ((uint32_t)src[0]) << 16L;
+      if (remaining == 2) {
+        l |= ((uint32_t)src[1] << 8L);
+      }
+
+      *(dst++) = conv_bin2ascii(l >> 18L);
+      *(dst++) = conv_bin2ascii(l >> 12L);
+      *(dst++) = (remaining == 1) ? '=' : conv_bin2ascii(l >> 6L);
+      *(dst++) = '=';
+      remaining = 0;
+    }
+    ret += 4;
+    src += 3;
+  }
+
+  *dst = '\0';
+  return ret;
+}
+
+
+// Decoding.
+
+int EVP_DecodedLength(size_t *out_len, size_t len) {
+  if (len % 4 != 0) {
+    return 0;
+  }
+
+  *out_len = (len / 4) * 3;
+  return 1;
+}
+
+void EVP_DecodeInit(EVP_ENCODE_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
+}
+
+static uint8_t base64_ascii_to_bin(uint8_t a) {
+  // Since PEM is sometimes used to carry private keys, we decode base64 data
+  // itself in constant-time.
+  const uint8_t is_upper = constant_time_in_range_8(a, 'A', 'Z');
+  const uint8_t is_lower = constant_time_in_range_8(a, 'a', 'z');
+  const uint8_t is_digit = constant_time_in_range_8(a, '0', '9');
+  const uint8_t is_plus = constant_time_eq_8(a, '+');
+  const uint8_t is_slash = constant_time_eq_8(a, '/');
+  const uint8_t is_equals = constant_time_eq_8(a, '=');
+
+  uint8_t ret = 0xff;  // 0xff signals invalid.
+  ret = constant_time_select_8(is_upper, a - 'A', ret);       // [0,26)
+  ret = constant_time_select_8(is_lower, a - 'a' + 26, ret);  // [26,52)
+  ret = constant_time_select_8(is_digit, a - '0' + 52, ret);  // [52,62)
+  ret = constant_time_select_8(is_plus, 62, ret);
+  ret = constant_time_select_8(is_slash, 63, ret);
+  // Padding maps to zero, to be further handled by the caller.
+  ret = constant_time_select_8(is_equals, 0, ret);
+  return ret;
+}
+
+// base64_decode_quad decodes a single “quad” (i.e. four characters) of base64
+// data and writes up to three bytes to |out|. It sets |*out_num_bytes| to the
+// number of bytes written, which will be less than three if the quad ended
+// with padding.  It returns one on success or zero on error.
+static int base64_decode_quad(uint8_t *out, size_t *out_num_bytes,
+                              const uint8_t *in) {
+  const uint8_t a = base64_ascii_to_bin(in[0]);
+  const uint8_t b = base64_ascii_to_bin(in[1]);
+  const uint8_t c = base64_ascii_to_bin(in[2]);
+  const uint8_t d = base64_ascii_to_bin(in[3]);
+  if (a == 0xff || b == 0xff || c == 0xff || d == 0xff) {
+    return 0;
+  }
+
+  const uint32_t v = ((uint32_t)a) << 18 | ((uint32_t)b) << 12 |
+                     ((uint32_t)c) << 6 | (uint32_t)d;
+
+  const unsigned padding_pattern = (in[0] == '=') << 3 |
+                                   (in[1] == '=') << 2 |
+                                   (in[2] == '=') << 1 |
+                                   (in[3] == '=');
+
+  switch (padding_pattern) {
+    case 0:
+      // The common case of no padding.
+      *out_num_bytes = 3;
+      out[0] = v >> 16;
+      out[1] = v >> 8;
+      out[2] = v;
+      break;
+
+    case 1:  // xxx=
+      *out_num_bytes = 2;
+      out[0] = v >> 16;
+      out[1] = v >> 8;
+      break;
+
+    case 3:  // xx==
+      *out_num_bytes = 1;
+      out[0] = v >> 16;
+      break;
+
+    default:
+      return 0;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
+                     const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+
+  if (ctx->error_encountered) {
+    return -1;
+  }
+
+  size_t bytes_out = 0, i;
+  for (i = 0; i < in_len; i++) {
+    const char c = in[i];
+    switch (c) {
+      case ' ':
+      case '\t':
+      case '\r':
+      case '\n':
+        continue;
+    }
+
+    if (ctx->eof_seen) {
+      ctx->error_encountered = 1;
+      return -1;
+    }
+
+    ctx->data[ctx->data_used++] = c;
+    if (ctx->data_used == 4) {
+      size_t num_bytes_resulting;
+      if (!base64_decode_quad(out, &num_bytes_resulting, ctx->data)) {
+        ctx->error_encountered = 1;
+        return -1;
+      }
+
+      ctx->data_used = 0;
+      bytes_out += num_bytes_resulting;
+      out += num_bytes_resulting;
+
+      if (num_bytes_resulting < 3) {
+        ctx->eof_seen = 1;
+      }
+    }
+  }
+
+  if (bytes_out > INT_MAX) {
+    ctx->error_encountered = 1;
+    *out_len = 0;
+    return -1;
+  }
+  *out_len = (int)bytes_out;
+
+  if (ctx->eof_seen) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
+  *out_len = 0;
+  if (ctx->error_encountered || ctx->data_used != 0) {
+    return -1;
+  }
+
+  return 1;
+}
+
+int EVP_DecodeBase64(uint8_t *out, size_t *out_len, size_t max_out,
+                     const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+
+  if (in_len % 4 != 0) {
+    return 0;
+  }
+
+  size_t max_len;
+  if (!EVP_DecodedLength(&max_len, in_len) ||
+      max_out < max_len) {
+    return 0;
+  }
+
+  size_t i, bytes_out = 0;
+  for (i = 0; i < in_len; i += 4) {
+    size_t num_bytes_resulting;
+
+    if (!base64_decode_quad(out, &num_bytes_resulting, &in[i])) {
+      return 0;
+    }
+
+    bytes_out += num_bytes_resulting;
+    out += num_bytes_resulting;
+    if (num_bytes_resulting != 3 && i != in_len - 4) {
+      return 0;
+    }
+  }
+
+  *out_len = bytes_out;
+  return 1;
+}
+
+int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
+  // Trim spaces and tabs from the beginning of the input.
+  while (src_len > 0) {
+    if (src[0] != ' ' && src[0] != '\t') {
+      break;
+    }
+
+    src++;
+    src_len--;
+  }
+
+  // Trim newlines, spaces and tabs from the end of the line.
+  while (src_len > 0) {
+    switch (src[src_len-1]) {
+      case ' ':
+      case '\t':
+      case '\r':
+      case '\n':
+        src_len--;
+        continue;
+    }
+
+    break;
+  }
+
+  size_t dst_len;
+  if (!EVP_DecodedLength(&dst_len, src_len) ||
+      dst_len > INT_MAX ||
+      !EVP_DecodeBase64(dst, &dst_len, dst_len, src, src_len)) {
+    return -1;
+  }
+
+  // EVP_DecodeBlock does not take padding into account, so put the
+  // NULs back in... so the caller can strip them back out.
+  while (dst_len % 3 != 0) {
+    dst[dst_len++] = '\0';
+  }
+  assert(dst_len <= INT_MAX);
+
+  return (int)dst_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c
new file mode 100644
index 0000000..88a5604
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c	
@@ -0,0 +1,700 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+
+BIO *BIO_new(const BIO_METHOD *method) {
+  BIO *ret = OPENSSL_malloc(sizeof(BIO));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BIO));
+  ret->method = method;
+  ret->shutdown = 1;
+  ret->references = 1;
+
+  if (method->create != NULL && !method->create(ret)) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int BIO_free(BIO *bio) {
+  BIO *next_bio;
+
+  for (; bio != NULL; bio = next_bio) {
+    if (!CRYPTO_refcount_dec_and_test_zero(&bio->references)) {
+      return 0;
+    }
+
+    next_bio = BIO_pop(bio);
+
+    if (bio->method != NULL && bio->method->destroy != NULL) {
+      bio->method->destroy(bio);
+    }
+
+    OPENSSL_free(bio);
+  }
+  return 1;
+}
+
+int BIO_up_ref(BIO *bio) {
+  CRYPTO_refcount_inc(&bio->references);
+  return 1;
+}
+
+void BIO_vfree(BIO *bio) {
+  BIO_free(bio);
+}
+
+void BIO_free_all(BIO *bio) {
+  BIO_free(bio);
+}
+
+int BIO_read(BIO *bio, void *buf, int len) {
+  if (bio == NULL || bio->method == NULL || bio->method->bread == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (len <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bread(bio, buf, len);
+  if (ret > 0) {
+    bio->num_read += ret;
+  }
+  return ret;
+}
+
+int BIO_gets(BIO *bio, char *buf, int len) {
+  if (bio == NULL || bio->method == NULL || bio->method->bgets == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (len <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bgets(bio, buf, len);
+  if (ret > 0) {
+    bio->num_read += ret;
+  }
+  return ret;
+}
+
+int BIO_write(BIO *bio, const void *in, int inl) {
+  if (bio == NULL || bio->method == NULL || bio->method->bwrite == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (inl <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bwrite(bio, in, inl);
+  if (ret > 0) {
+    bio->num_write += ret;
+  }
+  return ret;
+}
+
+int BIO_write_all(BIO *bio, const void *data, size_t len) {
+  const uint8_t *data_u8 = data;
+  while (len > 0) {
+    int ret = BIO_write(bio, data_u8, len > INT_MAX ? INT_MAX : (int)len);
+    if (ret <= 0) {
+      return 0;
+    }
+    data_u8 += ret;
+    len -= ret;
+  }
+  return 1;
+}
+
+int BIO_puts(BIO *bio, const char *in) {
+  return BIO_write(bio, in, strlen(in));
+}
+
+int BIO_flush(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_FLUSH, 0, NULL);
+}
+
+long BIO_ctrl(BIO *bio, int cmd, long larg, void *parg) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->method == NULL || bio->method->ctrl == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+
+  return bio->method->ctrl(bio, cmd, larg, parg);
+}
+
+char *BIO_ptr_ctrl(BIO *b, int cmd, long larg) {
+  char *p = NULL;
+
+  if (BIO_ctrl(b, cmd, larg, (void *)&p) <= 0) {
+    return NULL;
+  }
+
+  return p;
+}
+
+long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) {
+  int i = iarg;
+
+  return BIO_ctrl(b, cmd, larg, (void *)&i);
+}
+
+int BIO_reset(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_RESET, 0, NULL);
+}
+
+int BIO_eof(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_EOF, 0, NULL);
+}
+
+void BIO_set_flags(BIO *bio, int flags) {
+  bio->flags |= flags;
+}
+
+int BIO_test_flags(const BIO *bio, int flags) {
+  return bio->flags & flags;
+}
+
+int BIO_should_read(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_READ);
+}
+
+int BIO_should_write(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_WRITE);
+}
+
+int BIO_should_retry(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_SHOULD_RETRY);
+}
+
+int BIO_should_io_special(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_IO_SPECIAL);
+}
+
+int BIO_get_retry_reason(const BIO *bio) { return bio->retry_reason; }
+
+void BIO_clear_flags(BIO *bio, int flags) {
+  bio->flags &= ~flags;
+}
+
+void BIO_set_retry_read(BIO *bio) {
+  bio->flags |= BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY;
+}
+
+void BIO_set_retry_write(BIO *bio) {
+  bio->flags |= BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY;
+}
+
+static const int kRetryFlags = BIO_FLAGS_RWS | BIO_FLAGS_SHOULD_RETRY;
+
+int BIO_get_retry_flags(BIO *bio) {
+  return bio->flags & kRetryFlags;
+}
+
+void BIO_clear_retry_flags(BIO *bio) {
+  bio->flags &= ~kRetryFlags;
+  bio->retry_reason = 0;
+}
+
+int BIO_method_type(const BIO *bio) { return bio->method->type; }
+
+void BIO_copy_next_retry(BIO *bio) {
+  BIO_clear_retry_flags(bio);
+  BIO_set_flags(bio, BIO_get_retry_flags(bio->next_bio));
+  bio->retry_reason = bio->next_bio->retry_reason;
+}
+
+long BIO_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->method == NULL || bio->method->callback_ctrl == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return 0;
+  }
+
+  return bio->method->callback_ctrl(bio, cmd, fp);
+}
+
+size_t BIO_pending(const BIO *bio) {
+  const long r = BIO_ctrl((BIO *) bio, BIO_CTRL_PENDING, 0, NULL);
+  assert(r >= 0);
+
+  if (r < 0) {
+    return 0;
+  }
+  return r;
+}
+
+size_t BIO_ctrl_pending(const BIO *bio) {
+  return BIO_pending(bio);
+}
+
+size_t BIO_wpending(const BIO *bio) {
+  const long r = BIO_ctrl((BIO *) bio, BIO_CTRL_WPENDING, 0, NULL);
+  assert(r >= 0);
+
+  if (r < 0) {
+    return 0;
+  }
+  return r;
+}
+
+int BIO_set_close(BIO *bio, int close_flag) {
+  return BIO_ctrl(bio, BIO_CTRL_SET_CLOSE, close_flag, NULL);
+}
+
+OPENSSL_EXPORT size_t BIO_number_read(const BIO *bio) {
+  return bio->num_read;
+}
+
+OPENSSL_EXPORT size_t BIO_number_written(const BIO *bio) {
+  return bio->num_write;
+}
+
+BIO *BIO_push(BIO *bio, BIO *appended_bio) {
+  BIO *last_bio;
+
+  if (bio == NULL) {
+    return bio;
+  }
+
+  last_bio = bio;
+  while (last_bio->next_bio != NULL) {
+    last_bio = last_bio->next_bio;
+  }
+
+  last_bio->next_bio = appended_bio;
+  return bio;
+}
+
+BIO *BIO_pop(BIO *bio) {
+  BIO *ret;
+
+  if (bio == NULL) {
+    return NULL;
+  }
+  ret = bio->next_bio;
+  bio->next_bio = NULL;
+  return ret;
+}
+
+BIO *BIO_next(BIO *bio) {
+  if (!bio) {
+    return NULL;
+  }
+  return bio->next_bio;
+}
+
+BIO *BIO_find_type(BIO *bio, int type) {
+  int method_type, mask;
+
+  if (!bio) {
+    return NULL;
+  }
+  mask = type & 0xff;
+
+  do {
+    if (bio->method != NULL) {
+      method_type = bio->method->type;
+
+      if (!mask) {
+        if (method_type & type) {
+          return bio;
+        }
+      } else if (method_type == type) {
+        return bio;
+      }
+    }
+    bio = bio->next_bio;
+  } while (bio != NULL);
+
+  return NULL;
+}
+
+int BIO_indent(BIO *bio, unsigned indent, unsigned max_indent) {
+  if (indent > max_indent) {
+    indent = max_indent;
+  }
+
+  while (indent--) {
+    if (BIO_puts(bio, " ") != 1) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+static int print_bio(const char *str, size_t len, void *bio) {
+  return BIO_write((BIO *)bio, str, len);
+}
+
+void ERR_print_errors(BIO *bio) {
+  ERR_print_errors_cb(print_bio, bio);
+}
+
+// bio_read_all reads everything from |bio| and prepends |prefix| to it. On
+// success, |*out| is set to an allocated buffer (which should be freed with
+// |OPENSSL_free|), |*out_len| is set to its length and one is returned. The
+// buffer will contain |prefix| followed by the contents of |bio|. On failure,
+// zero is returned.
+//
+// The function will fail if the size of the output would equal or exceed
+// |max_len|.
+static int bio_read_all(BIO *bio, uint8_t **out, size_t *out_len,
+                        const uint8_t *prefix, size_t prefix_len,
+                        size_t max_len) {
+  static const size_t kChunkSize = 4096;
+
+  size_t len = prefix_len + kChunkSize;
+  if (len > max_len) {
+    len = max_len;
+  }
+  if (len < prefix_len) {
+    return 0;
+  }
+  *out = OPENSSL_malloc(len);
+  if (*out == NULL) {
+    return 0;
+  }
+  OPENSSL_memcpy(*out, prefix, prefix_len);
+  size_t done = prefix_len;
+
+  for (;;) {
+    if (done == len) {
+      OPENSSL_free(*out);
+      return 0;
+    }
+    const size_t todo = len - done;
+    assert(todo < INT_MAX);
+    const int n = BIO_read(bio, *out + done, todo);
+    if (n == 0) {
+      *out_len = done;
+      return 1;
+    } else if (n == -1) {
+      OPENSSL_free(*out);
+      return 0;
+    }
+
+    done += n;
+    if (len < max_len && len - done < kChunkSize / 2) {
+      len += kChunkSize;
+      if (len < kChunkSize || len > max_len) {
+        len = max_len;
+      }
+      uint8_t *new_buf = OPENSSL_realloc(*out, len);
+      if (new_buf == NULL) {
+        OPENSSL_free(*out);
+        return 0;
+      }
+      *out = new_buf;
+    }
+  }
+}
+
+// bio_read_full reads |len| bytes |bio| and writes them into |out|. It
+// tolerates partial reads from |bio| and returns one on success or zero if a
+// read fails before |len| bytes are read. On failure, it additionally sets
+// |*out_eof_on_first_read| to whether the error was due to |bio| returning zero
+// on the first read. |out_eof_on_first_read| may be NULL to discard the value.
+static int bio_read_full(BIO *bio, uint8_t *out, int *out_eof_on_first_read,
+                         size_t len) {
+  int first_read = 1;
+  while (len > 0) {
+    int todo = len <= INT_MAX ? (int)len : INT_MAX;
+    int ret = BIO_read(bio, out, todo);
+    if (ret <= 0) {
+      if (out_eof_on_first_read != NULL) {
+        *out_eof_on_first_read = first_read && ret == 0;
+      }
+      return 0;
+    }
+    out += ret;
+    len -= (size_t)ret;
+    first_read = 0;
+  }
+
+  return 1;
+}
+
+// For compatibility with existing |d2i_*_bio| callers, |BIO_read_asn1| uses
+// |ERR_LIB_ASN1| errors.
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_DECODE_ERROR)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_HEADER_TOO_LONG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_NOT_ENOUGH_DATA)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_TOO_LONG)
+
+int BIO_read_asn1(BIO *bio, uint8_t **out, size_t *out_len, size_t max_len) {
+  uint8_t header[6];
+
+  static const size_t kInitialHeaderLen = 2;
+  int eof_on_first_read;
+  if (!bio_read_full(bio, header, &eof_on_first_read, kInitialHeaderLen)) {
+    if (eof_on_first_read) {
+      // Historically, OpenSSL returned |ASN1_R_HEADER_TOO_LONG| when
+      // |d2i_*_bio| could not read anything. CPython conditions on this to
+      // determine if |bio| was empty.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_HEADER_TOO_LONG);
+    } else {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+    }
+    return 0;
+  }
+
+  const uint8_t tag = header[0];
+  const uint8_t length_byte = header[1];
+
+  if ((tag & 0x1f) == 0x1f) {
+    // Long form tags are not supported.
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+    return 0;
+  }
+
+  size_t len, header_len;
+  if ((length_byte & 0x80) == 0) {
+    // Short form length.
+    len = length_byte;
+    header_len = kInitialHeaderLen;
+  } else {
+    const size_t num_bytes = length_byte & 0x7f;
+
+    if ((tag & 0x20 /* constructed */) != 0 && num_bytes == 0) {
+      // indefinite length.
+      if (!bio_read_all(bio, out, out_len, header, kInitialHeaderLen,
+                        max_len)) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+        return 0;
+      }
+      return 1;
+    }
+
+    if (num_bytes == 0 || num_bytes > 4) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (!bio_read_full(bio, header + kInitialHeaderLen, NULL, num_bytes)) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+      return 0;
+    }
+    header_len = kInitialHeaderLen + num_bytes;
+
+    uint32_t len32 = 0;
+    for (unsigned i = 0; i < num_bytes; i++) {
+      len32 <<= 8;
+      len32 |= header[kInitialHeaderLen + i];
+    }
+
+    if (len32 < 128) {
+      // Length should have used short-form encoding.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if ((len32 >> ((num_bytes-1)*8)) == 0) {
+      // Length should have been at least one byte shorter.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    len = len32;
+  }
+
+  if (len + header_len < len ||
+      len + header_len > max_len ||
+      len > INT_MAX) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+    return 0;
+  }
+  len += header_len;
+  *out_len = len;
+
+  *out = OPENSSL_malloc(len);
+  if (*out == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  OPENSSL_memcpy(*out, header, header_len);
+  if (!bio_read_full(bio, (*out) + header_len, NULL, len - header_len)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+    OPENSSL_free(*out);
+    return 0;
+  }
+
+  return 1;
+}
+
+void BIO_set_retry_special(BIO *bio) {
+  bio->flags |= BIO_FLAGS_READ | BIO_FLAGS_IO_SPECIAL;
+}
+
+int BIO_set_write_buffer_size(BIO *bio, int buffer_size) { return 0; }
+
+static struct CRYPTO_STATIC_MUTEX g_index_lock = CRYPTO_STATIC_MUTEX_INIT;
+static int g_index = BIO_TYPE_START;
+
+int BIO_get_new_index(void) {
+  CRYPTO_STATIC_MUTEX_lock_write(&g_index_lock);
+  // If |g_index| exceeds 255, it will collide with the flags bits.
+  int ret = g_index > 255 ? -1 : g_index++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_index_lock);
+  return ret;
+}
+
+BIO_METHOD *BIO_meth_new(int type, const char *name) {
+  BIO_METHOD *method = OPENSSL_malloc(sizeof(BIO_METHOD));
+  if (method == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(method, 0, sizeof(BIO_METHOD));
+  method->type = type;
+  method->name = name;
+  return method;
+}
+
+void BIO_meth_free(BIO_METHOD *method) {
+  OPENSSL_free(method);
+}
+
+int BIO_meth_set_create(BIO_METHOD *method,
+                        int (*create)(BIO *)) {
+  method->create = create;
+  return 1;
+}
+
+int BIO_meth_set_destroy(BIO_METHOD *method,
+                         int (*destroy)(BIO *)) {
+  method->destroy = destroy;
+  return 1;
+}
+
+int BIO_meth_set_write(BIO_METHOD *method,
+                       int (*write)(BIO *, const char *, int)) {
+  method->bwrite = write;
+  return 1;
+}
+
+int BIO_meth_set_read(BIO_METHOD *method,
+                      int (*read)(BIO *, char *, int)) {
+  method->bread = read;
+  return 1;
+}
+
+int BIO_meth_set_gets(BIO_METHOD *method,
+                      int (*gets)(BIO *, char *, int)) {
+  method->bgets = gets;
+  return 1;
+}
+
+int BIO_meth_set_ctrl(BIO_METHOD *method,
+                      long (*ctrl)(BIO *, int, long, void *)) {
+  method->ctrl = ctrl;
+  return 1;
+}
+
+void BIO_set_data(BIO *bio, void *ptr) { bio->ptr = ptr; }
+
+void *BIO_get_data(BIO *bio) { return bio->ptr; }
+
+void BIO_set_init(BIO *bio, int init) { bio->init = init; }
+
+int BIO_get_init(BIO *bio) { return bio->init; }
+
+void BIO_set_shutdown(BIO *bio, int shutdown) { bio->shutdown = shutdown; }
+
+int BIO_get_shutdown(BIO *bio) { return bio->shutdown; }
+
+int BIO_meth_set_puts(BIO_METHOD *method, int (*puts)(BIO *, const char *)) {
+  // Ignore the parameter. We implement |BIO_puts| using |BIO_write|.
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c.grpc_back
new file mode 100644
index 0000000..7d97c3e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio.c.grpc_back	
@@ -0,0 +1,700 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+
+BIO *BIO_new(const BIO_METHOD *method) {
+  BIO *ret = OPENSSL_malloc(sizeof(BIO));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BIO));
+  ret->method = method;
+  ret->shutdown = 1;
+  ret->references = 1;
+
+  if (method->create != NULL && !method->create(ret)) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int BIO_free(BIO *bio) {
+  BIO *next_bio;
+
+  for (; bio != NULL; bio = next_bio) {
+    if (!CRYPTO_refcount_dec_and_test_zero(&bio->references)) {
+      return 0;
+    }
+
+    next_bio = BIO_pop(bio);
+
+    if (bio->method != NULL && bio->method->destroy != NULL) {
+      bio->method->destroy(bio);
+    }
+
+    OPENSSL_free(bio);
+  }
+  return 1;
+}
+
+int BIO_up_ref(BIO *bio) {
+  CRYPTO_refcount_inc(&bio->references);
+  return 1;
+}
+
+void BIO_vfree(BIO *bio) {
+  BIO_free(bio);
+}
+
+void BIO_free_all(BIO *bio) {
+  BIO_free(bio);
+}
+
+int BIO_read(BIO *bio, void *buf, int len) {
+  if (bio == NULL || bio->method == NULL || bio->method->bread == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (len <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bread(bio, buf, len);
+  if (ret > 0) {
+    bio->num_read += ret;
+  }
+  return ret;
+}
+
+int BIO_gets(BIO *bio, char *buf, int len) {
+  if (bio == NULL || bio->method == NULL || bio->method->bgets == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (len <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bgets(bio, buf, len);
+  if (ret > 0) {
+    bio->num_read += ret;
+  }
+  return ret;
+}
+
+int BIO_write(BIO *bio, const void *in, int inl) {
+  if (bio == NULL || bio->method == NULL || bio->method->bwrite == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+  if (!bio->init) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNINITIALIZED);
+    return -2;
+  }
+  if (inl <= 0) {
+    return 0;
+  }
+  int ret = bio->method->bwrite(bio, in, inl);
+  if (ret > 0) {
+    bio->num_write += ret;
+  }
+  return ret;
+}
+
+int BIO_write_all(BIO *bio, const void *data, size_t len) {
+  const uint8_t *data_u8 = data;
+  while (len > 0) {
+    int ret = BIO_write(bio, data_u8, len > INT_MAX ? INT_MAX : (int)len);
+    if (ret <= 0) {
+      return 0;
+    }
+    data_u8 += ret;
+    len -= ret;
+  }
+  return 1;
+}
+
+int BIO_puts(BIO *bio, const char *in) {
+  return BIO_write(bio, in, strlen(in));
+}
+
+int BIO_flush(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_FLUSH, 0, NULL);
+}
+
+long BIO_ctrl(BIO *bio, int cmd, long larg, void *parg) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->method == NULL || bio->method->ctrl == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return -2;
+  }
+
+  return bio->method->ctrl(bio, cmd, larg, parg);
+}
+
+char *BIO_ptr_ctrl(BIO *b, int cmd, long larg) {
+  char *p = NULL;
+
+  if (BIO_ctrl(b, cmd, larg, (void *)&p) <= 0) {
+    return NULL;
+  }
+
+  return p;
+}
+
+long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg) {
+  int i = iarg;
+
+  return BIO_ctrl(b, cmd, larg, (void *)&i);
+}
+
+int BIO_reset(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_RESET, 0, NULL);
+}
+
+int BIO_eof(BIO *bio) {
+  return BIO_ctrl(bio, BIO_CTRL_EOF, 0, NULL);
+}
+
+void BIO_set_flags(BIO *bio, int flags) {
+  bio->flags |= flags;
+}
+
+int BIO_test_flags(const BIO *bio, int flags) {
+  return bio->flags & flags;
+}
+
+int BIO_should_read(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_READ);
+}
+
+int BIO_should_write(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_WRITE);
+}
+
+int BIO_should_retry(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_SHOULD_RETRY);
+}
+
+int BIO_should_io_special(const BIO *bio) {
+  return BIO_test_flags(bio, BIO_FLAGS_IO_SPECIAL);
+}
+
+int BIO_get_retry_reason(const BIO *bio) { return bio->retry_reason; }
+
+void BIO_clear_flags(BIO *bio, int flags) {
+  bio->flags &= ~flags;
+}
+
+void BIO_set_retry_read(BIO *bio) {
+  bio->flags |= BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY;
+}
+
+void BIO_set_retry_write(BIO *bio) {
+  bio->flags |= BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY;
+}
+
+static const int kRetryFlags = BIO_FLAGS_RWS | BIO_FLAGS_SHOULD_RETRY;
+
+int BIO_get_retry_flags(BIO *bio) {
+  return bio->flags & kRetryFlags;
+}
+
+void BIO_clear_retry_flags(BIO *bio) {
+  bio->flags &= ~kRetryFlags;
+  bio->retry_reason = 0;
+}
+
+int BIO_method_type(const BIO *bio) { return bio->method->type; }
+
+void BIO_copy_next_retry(BIO *bio) {
+  BIO_clear_retry_flags(bio);
+  BIO_set_flags(bio, BIO_get_retry_flags(bio->next_bio));
+  bio->retry_reason = bio->next_bio->retry_reason;
+}
+
+long BIO_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->method == NULL || bio->method->callback_ctrl == NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_UNSUPPORTED_METHOD);
+    return 0;
+  }
+
+  return bio->method->callback_ctrl(bio, cmd, fp);
+}
+
+size_t BIO_pending(const BIO *bio) {
+  const long r = BIO_ctrl((BIO *) bio, BIO_CTRL_PENDING, 0, NULL);
+  assert(r >= 0);
+
+  if (r < 0) {
+    return 0;
+  }
+  return r;
+}
+
+size_t BIO_ctrl_pending(const BIO *bio) {
+  return BIO_pending(bio);
+}
+
+size_t BIO_wpending(const BIO *bio) {
+  const long r = BIO_ctrl((BIO *) bio, BIO_CTRL_WPENDING, 0, NULL);
+  assert(r >= 0);
+
+  if (r < 0) {
+    return 0;
+  }
+  return r;
+}
+
+int BIO_set_close(BIO *bio, int close_flag) {
+  return BIO_ctrl(bio, BIO_CTRL_SET_CLOSE, close_flag, NULL);
+}
+
+OPENSSL_EXPORT size_t BIO_number_read(const BIO *bio) {
+  return bio->num_read;
+}
+
+OPENSSL_EXPORT size_t BIO_number_written(const BIO *bio) {
+  return bio->num_write;
+}
+
+BIO *BIO_push(BIO *bio, BIO *appended_bio) {
+  BIO *last_bio;
+
+  if (bio == NULL) {
+    return bio;
+  }
+
+  last_bio = bio;
+  while (last_bio->next_bio != NULL) {
+    last_bio = last_bio->next_bio;
+  }
+
+  last_bio->next_bio = appended_bio;
+  return bio;
+}
+
+BIO *BIO_pop(BIO *bio) {
+  BIO *ret;
+
+  if (bio == NULL) {
+    return NULL;
+  }
+  ret = bio->next_bio;
+  bio->next_bio = NULL;
+  return ret;
+}
+
+BIO *BIO_next(BIO *bio) {
+  if (!bio) {
+    return NULL;
+  }
+  return bio->next_bio;
+}
+
+BIO *BIO_find_type(BIO *bio, int type) {
+  int method_type, mask;
+
+  if (!bio) {
+    return NULL;
+  }
+  mask = type & 0xff;
+
+  do {
+    if (bio->method != NULL) {
+      method_type = bio->method->type;
+
+      if (!mask) {
+        if (method_type & type) {
+          return bio;
+        }
+      } else if (method_type == type) {
+        return bio;
+      }
+    }
+    bio = bio->next_bio;
+  } while (bio != NULL);
+
+  return NULL;
+}
+
+int BIO_indent(BIO *bio, unsigned indent, unsigned max_indent) {
+  if (indent > max_indent) {
+    indent = max_indent;
+  }
+
+  while (indent--) {
+    if (BIO_puts(bio, " ") != 1) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+static int print_bio(const char *str, size_t len, void *bio) {
+  return BIO_write((BIO *)bio, str, len);
+}
+
+void ERR_print_errors(BIO *bio) {
+  ERR_print_errors_cb(print_bio, bio);
+}
+
+// bio_read_all reads everything from |bio| and prepends |prefix| to it. On
+// success, |*out| is set to an allocated buffer (which should be freed with
+// |OPENSSL_free|), |*out_len| is set to its length and one is returned. The
+// buffer will contain |prefix| followed by the contents of |bio|. On failure,
+// zero is returned.
+//
+// The function will fail if the size of the output would equal or exceed
+// |max_len|.
+static int bio_read_all(BIO *bio, uint8_t **out, size_t *out_len,
+                        const uint8_t *prefix, size_t prefix_len,
+                        size_t max_len) {
+  static const size_t kChunkSize = 4096;
+
+  size_t len = prefix_len + kChunkSize;
+  if (len > max_len) {
+    len = max_len;
+  }
+  if (len < prefix_len) {
+    return 0;
+  }
+  *out = OPENSSL_malloc(len);
+  if (*out == NULL) {
+    return 0;
+  }
+  OPENSSL_memcpy(*out, prefix, prefix_len);
+  size_t done = prefix_len;
+
+  for (;;) {
+    if (done == len) {
+      OPENSSL_free(*out);
+      return 0;
+    }
+    const size_t todo = len - done;
+    assert(todo < INT_MAX);
+    const int n = BIO_read(bio, *out + done, todo);
+    if (n == 0) {
+      *out_len = done;
+      return 1;
+    } else if (n == -1) {
+      OPENSSL_free(*out);
+      return 0;
+    }
+
+    done += n;
+    if (len < max_len && len - done < kChunkSize / 2) {
+      len += kChunkSize;
+      if (len < kChunkSize || len > max_len) {
+        len = max_len;
+      }
+      uint8_t *new_buf = OPENSSL_realloc(*out, len);
+      if (new_buf == NULL) {
+        OPENSSL_free(*out);
+        return 0;
+      }
+      *out = new_buf;
+    }
+  }
+}
+
+// bio_read_full reads |len| bytes |bio| and writes them into |out|. It
+// tolerates partial reads from |bio| and returns one on success or zero if a
+// read fails before |len| bytes are read. On failure, it additionally sets
+// |*out_eof_on_first_read| to whether the error was due to |bio| returning zero
+// on the first read. |out_eof_on_first_read| may be NULL to discard the value.
+static int bio_read_full(BIO *bio, uint8_t *out, int *out_eof_on_first_read,
+                         size_t len) {
+  int first_read = 1;
+  while (len > 0) {
+    int todo = len <= INT_MAX ? (int)len : INT_MAX;
+    int ret = BIO_read(bio, out, todo);
+    if (ret <= 0) {
+      if (out_eof_on_first_read != NULL) {
+        *out_eof_on_first_read = first_read && ret == 0;
+      }
+      return 0;
+    }
+    out += ret;
+    len -= (size_t)ret;
+    first_read = 0;
+  }
+
+  return 1;
+}
+
+// For compatibility with existing |d2i_*_bio| callers, |BIO_read_asn1| uses
+// |ERR_LIB_ASN1| errors.
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_DECODE_ERROR)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_HEADER_TOO_LONG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_NOT_ENOUGH_DATA)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ASN1_R_TOO_LONG)
+
+int BIO_read_asn1(BIO *bio, uint8_t **out, size_t *out_len, size_t max_len) {
+  uint8_t header[6];
+
+  static const size_t kInitialHeaderLen = 2;
+  int eof_on_first_read;
+  if (!bio_read_full(bio, header, &eof_on_first_read, kInitialHeaderLen)) {
+    if (eof_on_first_read) {
+      // Historically, OpenSSL returned |ASN1_R_HEADER_TOO_LONG| when
+      // |d2i_*_bio| could not read anything. CPython conditions on this to
+      // determine if |bio| was empty.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_HEADER_TOO_LONG);
+    } else {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+    }
+    return 0;
+  }
+
+  const uint8_t tag = header[0];
+  const uint8_t length_byte = header[1];
+
+  if ((tag & 0x1f) == 0x1f) {
+    // Long form tags are not supported.
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+    return 0;
+  }
+
+  size_t len, header_len;
+  if ((length_byte & 0x80) == 0) {
+    // Short form length.
+    len = length_byte;
+    header_len = kInitialHeaderLen;
+  } else {
+    const size_t num_bytes = length_byte & 0x7f;
+
+    if ((tag & 0x20 /* constructed */) != 0 && num_bytes == 0) {
+      // indefinite length.
+      if (!bio_read_all(bio, out, out_len, header, kInitialHeaderLen,
+                        max_len)) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+        return 0;
+      }
+      return 1;
+    }
+
+    if (num_bytes == 0 || num_bytes > 4) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (!bio_read_full(bio, header + kInitialHeaderLen, NULL, num_bytes)) {
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+      return 0;
+    }
+    header_len = kInitialHeaderLen + num_bytes;
+
+    uint32_t len32 = 0;
+    for (unsigned i = 0; i < num_bytes; i++) {
+      len32 <<= 8;
+      len32 |= header[kInitialHeaderLen + i];
+    }
+
+    if (len32 < 128) {
+      // Length should have used short-form encoding.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if ((len32 >> ((num_bytes-1)*8)) == 0) {
+      // Length should have been at least one byte shorter.
+      OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
+      return 0;
+    }
+
+    len = len32;
+  }
+
+  if (len + header_len < len ||
+      len + header_len > max_len ||
+      len > INT_MAX) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+    return 0;
+  }
+  len += header_len;
+  *out_len = len;
+
+  *out = OPENSSL_malloc(len);
+  if (*out == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  OPENSSL_memcpy(*out, header, header_len);
+  if (!bio_read_full(bio, (*out) + header_len, NULL, len - header_len)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ENOUGH_DATA);
+    OPENSSL_free(*out);
+    return 0;
+  }
+
+  return 1;
+}
+
+void BIO_set_retry_special(BIO *bio) {
+  bio->flags |= BIO_FLAGS_READ | BIO_FLAGS_IO_SPECIAL;
+}
+
+int BIO_set_write_buffer_size(BIO *bio, int buffer_size) { return 0; }
+
+static struct CRYPTO_STATIC_MUTEX g_index_lock = CRYPTO_STATIC_MUTEX_INIT;
+static int g_index = BIO_TYPE_START;
+
+int BIO_get_new_index(void) {
+  CRYPTO_STATIC_MUTEX_lock_write(&g_index_lock);
+  // If |g_index| exceeds 255, it will collide with the flags bits.
+  int ret = g_index > 255 ? -1 : g_index++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_index_lock);
+  return ret;
+}
+
+BIO_METHOD *BIO_meth_new(int type, const char *name) {
+  BIO_METHOD *method = OPENSSL_malloc(sizeof(BIO_METHOD));
+  if (method == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(method, 0, sizeof(BIO_METHOD));
+  method->type = type;
+  method->name = name;
+  return method;
+}
+
+void BIO_meth_free(BIO_METHOD *method) {
+  OPENSSL_free(method);
+}
+
+int BIO_meth_set_create(BIO_METHOD *method,
+                        int (*create)(BIO *)) {
+  method->create = create;
+  return 1;
+}
+
+int BIO_meth_set_destroy(BIO_METHOD *method,
+                         int (*destroy)(BIO *)) {
+  method->destroy = destroy;
+  return 1;
+}
+
+int BIO_meth_set_write(BIO_METHOD *method,
+                       int (*write)(BIO *, const char *, int)) {
+  method->bwrite = write;
+  return 1;
+}
+
+int BIO_meth_set_read(BIO_METHOD *method,
+                      int (*read)(BIO *, char *, int)) {
+  method->bread = read;
+  return 1;
+}
+
+int BIO_meth_set_gets(BIO_METHOD *method,
+                      int (*gets)(BIO *, char *, int)) {
+  method->bgets = gets;
+  return 1;
+}
+
+int BIO_meth_set_ctrl(BIO_METHOD *method,
+                      long (*ctrl)(BIO *, int, long, void *)) {
+  method->ctrl = ctrl;
+  return 1;
+}
+
+void BIO_set_data(BIO *bio, void *ptr) { bio->ptr = ptr; }
+
+void *BIO_get_data(BIO *bio) { return bio->ptr; }
+
+void BIO_set_init(BIO *bio, int init) { bio->init = init; }
+
+int BIO_get_init(BIO *bio) { return bio->init; }
+
+void BIO_set_shutdown(BIO *bio, int shutdown) { bio->shutdown = shutdown; }
+
+int BIO_get_shutdown(BIO *bio) { return bio->shutdown; }
+
+int BIO_meth_set_puts(BIO_METHOD *method, int (*puts)(BIO *, const char *)) {
+  // Ignore the parameter. We implement |BIO_puts| using |BIO_write|.
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c
new file mode 100644
index 0000000..f30fb47
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c	
@@ -0,0 +1,330 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+BIO *BIO_new_mem_buf(const void *buf, int len) {
+  BIO *ret;
+  BUF_MEM *b;
+  const size_t size = len < 0 ? strlen((char *)buf) : (size_t)len;
+
+  if (!buf && len != 0) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_NULL_PARAMETER);
+    return NULL;
+  }
+
+  ret = BIO_new(BIO_s_mem());
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  b = (BUF_MEM *)ret->ptr;
+  // BIO_FLAGS_MEM_RDONLY ensures |b->data| is not written to.
+  b->data = (void *)buf;
+  b->length = size;
+  b->max = size;
+
+  ret->flags |= BIO_FLAGS_MEM_RDONLY;
+
+  // |num| is used to store the value that this BIO will return when it runs
+  // out of data. If it's negative then the retry flags will also be set. Since
+  // this is static data, retrying wont help
+  ret->num = 0;
+
+  return ret;
+}
+
+static int mem_new(BIO *bio) {
+  BUF_MEM *b;
+
+  b = BUF_MEM_new();
+  if (b == NULL) {
+    return 0;
+  }
+
+  // |shutdown| is used to store the close flag: whether the BIO has ownership
+  // of the BUF_MEM.
+  bio->shutdown = 1;
+  bio->init = 1;
+  bio->num = -1;
+  bio->ptr = (char *)b;
+
+  return 1;
+}
+
+static int mem_free(BIO *bio) {
+  BUF_MEM *b;
+
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (!bio->shutdown || !bio->init || bio->ptr == NULL) {
+    return 1;
+  }
+
+  b = (BUF_MEM *)bio->ptr;
+  if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+    b->data = NULL;
+  }
+  BUF_MEM_free(b);
+  bio->ptr = NULL;
+  return 1;
+}
+
+static int mem_read(BIO *bio, char *out, int outl) {
+  int ret;
+  BUF_MEM *b = (BUF_MEM*) bio->ptr;
+
+  BIO_clear_retry_flags(bio);
+  ret = outl;
+  if (b->length < INT_MAX && ret > (int)b->length) {
+    ret = b->length;
+  }
+
+  if (ret > 0) {
+    OPENSSL_memcpy(out, b->data, ret);
+    b->length -= ret;
+    if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+      b->data += ret;
+    } else {
+      OPENSSL_memmove(b->data, &b->data[ret], b->length);
+    }
+  } else if (b->length == 0) {
+    ret = bio->num;
+    if (ret != 0) {
+      BIO_set_retry_read(bio);
+    }
+  }
+  return ret;
+}
+
+static int mem_write(BIO *bio, const char *in, int inl) {
+  int ret = -1;
+  int blen;
+  BUF_MEM *b;
+
+  b = (BUF_MEM *)bio->ptr;
+
+  if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_WRITE_TO_READ_ONLY_BIO);
+    goto err;
+  }
+
+  BIO_clear_retry_flags(bio);
+  blen = b->length;
+  if (INT_MAX - blen < inl) {
+    goto err;
+  }
+  if (BUF_MEM_grow_clean(b, blen + inl) != ((size_t) blen) + inl) {
+    goto err;
+  }
+  OPENSSL_memcpy(&b->data[blen], in, inl);
+  ret = inl;
+
+err:
+  return ret;
+}
+
+static int mem_gets(BIO *bio, char *buf, int size) {
+  int i, j;
+  char *p;
+  BUF_MEM *b = (BUF_MEM *)bio->ptr;
+
+  BIO_clear_retry_flags(bio);
+  j = b->length;
+  if (size - 1 < j) {
+    j = size - 1;
+  }
+  if (j <= 0) {
+    if (size > 0) {
+      *buf = 0;
+    }
+    return 0;
+  }
+
+  p = b->data;
+  for (i = 0; i < j; i++) {
+    if (p[i] == '\n') {
+      i++;
+      break;
+    }
+  }
+
+  // i is now the max num of bytes to copy, either j or up to and including the
+  // first newline
+
+  i = mem_read(bio, buf, i);
+  if (i > 0) {
+    buf[i] = '\0';
+  }
+  return i;
+}
+
+static long mem_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  long ret = 1;
+  char **pptr;
+
+  BUF_MEM *b = (BUF_MEM *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      if (b->data != NULL) {
+        // For read only case reset to the start again
+        if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+          b->data -= b->max - b->length;
+          b->length = b->max;
+        } else {
+          OPENSSL_memset(b->data, 0, b->max);
+          b->length = 0;
+        }
+      }
+      break;
+    case BIO_CTRL_EOF:
+      ret = (long)(b->length == 0);
+      break;
+    case BIO_C_SET_BUF_MEM_EOF_RETURN:
+      bio->num = (int)num;
+      break;
+    case BIO_CTRL_INFO:
+      ret = (long)b->length;
+      if (ptr != NULL) {
+        pptr = (char **)ptr;
+        *pptr = (char *)&b->data[0];
+      }
+      break;
+    case BIO_C_SET_BUF_MEM:
+      mem_free(bio);
+      bio->shutdown = (int)num;
+      bio->ptr = ptr;
+      break;
+    case BIO_C_GET_BUF_MEM_PTR:
+      if (ptr != NULL) {
+        pptr = (char **)ptr;
+        *pptr = (char *)b;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = (long)bio->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      break;
+
+    case BIO_CTRL_WPENDING:
+      ret = 0L;
+      break;
+    case BIO_CTRL_PENDING:
+      ret = (long)b->length;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static const BIO_METHOD mem_method = {
+    BIO_TYPE_MEM,    "memory buffer",
+    mem_write,       mem_read,
+    NULL /* puts */, mem_gets,
+    mem_ctrl,        mem_new,
+    mem_free,        NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_mem(void) { return &mem_method; }
+
+int BIO_mem_contents(const BIO *bio, const uint8_t **out_contents,
+                     size_t *out_len) {
+  const BUF_MEM *b;
+  if (bio->method != &mem_method) {
+    return 0;
+  }
+
+  b = (BUF_MEM *)bio->ptr;
+  *out_contents = (uint8_t *)b->data;
+  *out_len = b->length;
+  return 1;
+}
+
+long BIO_get_mem_data(BIO *bio, char **contents) {
+  return BIO_ctrl(bio, BIO_CTRL_INFO, 0, (char *) contents);
+}
+
+int BIO_get_mem_ptr(BIO *bio, BUF_MEM **out) {
+  return BIO_ctrl(bio, BIO_C_GET_BUF_MEM_PTR, 0, (char *) out);
+}
+
+int BIO_set_mem_buf(BIO *bio, BUF_MEM *b, int take_ownership) {
+  return BIO_ctrl(bio, BIO_C_SET_BUF_MEM, take_ownership, (char *) b);
+}
+
+int BIO_set_mem_eof_return(BIO *bio, int eof_value) {
+  return BIO_ctrl(bio, BIO_C_SET_BUF_MEM_EOF_RETURN, eof_value, NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c.grpc_back
new file mode 100644
index 0000000..08dd6e9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/bio_mem.c.grpc_back	
@@ -0,0 +1,330 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+BIO *BIO_new_mem_buf(const void *buf, int len) {
+  BIO *ret;
+  BUF_MEM *b;
+  const size_t size = len < 0 ? strlen((char *)buf) : (size_t)len;
+
+  if (!buf && len != 0) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_NULL_PARAMETER);
+    return NULL;
+  }
+
+  ret = BIO_new(BIO_s_mem());
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  b = (BUF_MEM *)ret->ptr;
+  // BIO_FLAGS_MEM_RDONLY ensures |b->data| is not written to.
+  b->data = (void *)buf;
+  b->length = size;
+  b->max = size;
+
+  ret->flags |= BIO_FLAGS_MEM_RDONLY;
+
+  // |num| is used to store the value that this BIO will return when it runs
+  // out of data. If it's negative then the retry flags will also be set. Since
+  // this is static data, retrying wont help
+  ret->num = 0;
+
+  return ret;
+}
+
+static int mem_new(BIO *bio) {
+  BUF_MEM *b;
+
+  b = BUF_MEM_new();
+  if (b == NULL) {
+    return 0;
+  }
+
+  // |shutdown| is used to store the close flag: whether the BIO has ownership
+  // of the BUF_MEM.
+  bio->shutdown = 1;
+  bio->init = 1;
+  bio->num = -1;
+  bio->ptr = (char *)b;
+
+  return 1;
+}
+
+static int mem_free(BIO *bio) {
+  BUF_MEM *b;
+
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (!bio->shutdown || !bio->init || bio->ptr == NULL) {
+    return 1;
+  }
+
+  b = (BUF_MEM *)bio->ptr;
+  if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+    b->data = NULL;
+  }
+  BUF_MEM_free(b);
+  bio->ptr = NULL;
+  return 1;
+}
+
+static int mem_read(BIO *bio, char *out, int outl) {
+  int ret;
+  BUF_MEM *b = (BUF_MEM*) bio->ptr;
+
+  BIO_clear_retry_flags(bio);
+  ret = outl;
+  if (b->length < INT_MAX && ret > (int)b->length) {
+    ret = b->length;
+  }
+
+  if (ret > 0) {
+    OPENSSL_memcpy(out, b->data, ret);
+    b->length -= ret;
+    if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+      b->data += ret;
+    } else {
+      OPENSSL_memmove(b->data, &b->data[ret], b->length);
+    }
+  } else if (b->length == 0) {
+    ret = bio->num;
+    if (ret != 0) {
+      BIO_set_retry_read(bio);
+    }
+  }
+  return ret;
+}
+
+static int mem_write(BIO *bio, const char *in, int inl) {
+  int ret = -1;
+  int blen;
+  BUF_MEM *b;
+
+  b = (BUF_MEM *)bio->ptr;
+
+  if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_WRITE_TO_READ_ONLY_BIO);
+    goto err;
+  }
+
+  BIO_clear_retry_flags(bio);
+  blen = b->length;
+  if (INT_MAX - blen < inl) {
+    goto err;
+  }
+  if (BUF_MEM_grow_clean(b, blen + inl) != ((size_t) blen) + inl) {
+    goto err;
+  }
+  OPENSSL_memcpy(&b->data[blen], in, inl);
+  ret = inl;
+
+err:
+  return ret;
+}
+
+static int mem_gets(BIO *bio, char *buf, int size) {
+  int i, j;
+  char *p;
+  BUF_MEM *b = (BUF_MEM *)bio->ptr;
+
+  BIO_clear_retry_flags(bio);
+  j = b->length;
+  if (size - 1 < j) {
+    j = size - 1;
+  }
+  if (j <= 0) {
+    if (size > 0) {
+      *buf = 0;
+    }
+    return 0;
+  }
+
+  p = b->data;
+  for (i = 0; i < j; i++) {
+    if (p[i] == '\n') {
+      i++;
+      break;
+    }
+  }
+
+  // i is now the max num of bytes to copy, either j or up to and including the
+  // first newline
+
+  i = mem_read(bio, buf, i);
+  if (i > 0) {
+    buf[i] = '\0';
+  }
+  return i;
+}
+
+static long mem_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  long ret = 1;
+  char **pptr;
+
+  BUF_MEM *b = (BUF_MEM *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      if (b->data != NULL) {
+        // For read only case reset to the start again
+        if (bio->flags & BIO_FLAGS_MEM_RDONLY) {
+          b->data -= b->max - b->length;
+          b->length = b->max;
+        } else {
+          OPENSSL_memset(b->data, 0, b->max);
+          b->length = 0;
+        }
+      }
+      break;
+    case BIO_CTRL_EOF:
+      ret = (long)(b->length == 0);
+      break;
+    case BIO_C_SET_BUF_MEM_EOF_RETURN:
+      bio->num = (int)num;
+      break;
+    case BIO_CTRL_INFO:
+      ret = (long)b->length;
+      if (ptr != NULL) {
+        pptr = (char **)ptr;
+        *pptr = (char *)&b->data[0];
+      }
+      break;
+    case BIO_C_SET_BUF_MEM:
+      mem_free(bio);
+      bio->shutdown = (int)num;
+      bio->ptr = ptr;
+      break;
+    case BIO_C_GET_BUF_MEM_PTR:
+      if (ptr != NULL) {
+        pptr = (char **)ptr;
+        *pptr = (char *)b;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = (long)bio->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      break;
+
+    case BIO_CTRL_WPENDING:
+      ret = 0L;
+      break;
+    case BIO_CTRL_PENDING:
+      ret = (long)b->length;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static const BIO_METHOD mem_method = {
+    BIO_TYPE_MEM,    "memory buffer",
+    mem_write,       mem_read,
+    NULL /* puts */, mem_gets,
+    mem_ctrl,        mem_new,
+    mem_free,        NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_mem(void) { return &mem_method; }
+
+int BIO_mem_contents(const BIO *bio, const uint8_t **out_contents,
+                     size_t *out_len) {
+  const BUF_MEM *b;
+  if (bio->method != &mem_method) {
+    return 0;
+  }
+
+  b = (BUF_MEM *)bio->ptr;
+  *out_contents = (uint8_t *)b->data;
+  *out_len = b->length;
+  return 1;
+}
+
+long BIO_get_mem_data(BIO *bio, char **contents) {
+  return BIO_ctrl(bio, BIO_CTRL_INFO, 0, (char *) contents);
+}
+
+int BIO_get_mem_ptr(BIO *bio, BUF_MEM **out) {
+  return BIO_ctrl(bio, BIO_C_GET_BUF_MEM_PTR, 0, (char *) out);
+}
+
+int BIO_set_mem_buf(BIO *bio, BUF_MEM *b, int take_ownership) {
+  return BIO_ctrl(bio, BIO_C_SET_BUF_MEM, take_ownership, (char *) b);
+}
+
+int BIO_set_mem_eof_return(BIO *bio, int eof_value) {
+  return BIO_ctrl(bio, BIO_C_SET_BUF_MEM_EOF_RETURN, eof_value, NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c
new file mode 100644
index 0000000..409f4ac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c	
@@ -0,0 +1,545 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+#include <ws2tcpip.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+enum {
+  BIO_CONN_S_BEFORE,
+  BIO_CONN_S_BLOCKED_CONNECT,
+  BIO_CONN_S_OK,
+};
+
+typedef struct bio_connect_st {
+  int state;
+
+  char *param_hostname;
+  char *param_port;
+  int nbio;
+
+  unsigned short port;
+
+  struct sockaddr_storage them;
+  socklen_t them_length;
+
+  // the file descriptor is kept in bio->num in order to match the socket
+  // BIO.
+
+  // info_callback is called when the connection is initially made
+  // callback(BIO,state,ret);  The callback should return 'ret', state is for
+  // compatibility with the SSL info_callback.
+  int (*info_callback)(const BIO *bio, int state, int ret);
+} BIO_CONNECT;
+
+#if !defined(OPENSSL_WINDOWS)
+static int closesocket(int sock) {
+  return close(sock);
+}
+#endif
+
+// split_host_and_port sets |*out_host| and |*out_port| to the host and port
+// parsed from |name|. It returns one on success or zero on error. Even when
+// successful, |*out_port| may be NULL on return if no port was specified.
+static int split_host_and_port(char **out_host, char **out_port, const char *name) {
+  const char *host, *port = NULL;
+  size_t host_len = 0;
+
+  *out_host = NULL;
+  *out_port = NULL;
+
+  if (name[0] == '[') {  // bracketed IPv6 address
+    const char *close = strchr(name, ']');
+    if (close == NULL) {
+      return 0;
+    }
+    host = name + 1;
+    host_len = close - host;
+    if (close[1] == ':') {  // [IP]:port
+      port = close + 2;
+    } else if (close[1] != 0) {
+      return 0;
+    }
+  } else {
+    const char *colon = strchr(name, ':');
+    if (colon == NULL || strchr(colon + 1, ':') != NULL) {  // IPv6 address
+      host = name;
+      host_len = strlen(name);
+    } else {  // host:port
+      host = name;
+      host_len = colon - name;
+      port = colon + 1;
+    }
+  }
+
+  *out_host = OPENSSL_strndup(host, host_len);
+  if (*out_host == NULL) {
+    return 0;
+  }
+  if (port == NULL) {
+    *out_port = NULL;
+    return 1;
+  }
+  *out_port = OPENSSL_strdup(port);
+  if (*out_port == NULL) {
+    OPENSSL_free(*out_host);
+    *out_host = NULL;
+    return 0;
+  }
+  return 1;
+}
+
+static int conn_state(BIO *bio, BIO_CONNECT *c) {
+  int ret = -1, i;
+  int (*cb)(const BIO *, int, int) = NULL;
+
+  if (c->info_callback != NULL) {
+    cb = c->info_callback;
+  }
+
+  for (;;) {
+    switch (c->state) {
+      case BIO_CONN_S_BEFORE:
+        // If there's a hostname and a port, assume that both are
+        // exactly what they say. If there is only a hostname, try
+        // (just once) to split it into a hostname and port.
+
+        if (c->param_hostname == NULL) {
+          OPENSSL_PUT_ERROR(BIO, BIO_R_NO_HOSTNAME_SPECIFIED);
+          goto exit_loop;
+        }
+
+        if (c->param_port == NULL) {
+          char *host, *port;
+          if (!split_host_and_port(&host, &port, c->param_hostname) ||
+              port == NULL) {
+            OPENSSL_free(host);
+            OPENSSL_free(port);
+            OPENSSL_PUT_ERROR(BIO, BIO_R_NO_PORT_SPECIFIED);
+            ERR_add_error_data(2, "host=", c->param_hostname);
+            goto exit_loop;
+          }
+
+          OPENSSL_free(c->param_port);
+          c->param_port = port;
+          OPENSSL_free(c->param_hostname);
+          c->param_hostname = host;
+        }
+
+        if (!bio_ip_and_port_to_socket_and_addr(
+                &bio->num, &c->them, &c->them_length, c->param_hostname,
+                c->param_port)) {
+          OPENSSL_PUT_ERROR(BIO, BIO_R_UNABLE_TO_CREATE_SOCKET);
+          ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+          goto exit_loop;
+        }
+
+        if (c->nbio) {
+          if (!bio_socket_nbio(bio->num, 1)) {
+            OPENSSL_PUT_ERROR(BIO, BIO_R_ERROR_SETTING_NBIO);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":",
+                               c->param_port);
+            goto exit_loop;
+          }
+        }
+
+        i = 1;
+        ret = setsockopt(bio->num, SOL_SOCKET, SO_KEEPALIVE, (char *)&i,
+                         sizeof(i));
+        if (ret < 0) {
+          OPENSSL_PUT_SYSTEM_ERROR();
+          OPENSSL_PUT_ERROR(BIO, BIO_R_KEEPALIVE);
+          ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+          goto exit_loop;
+        }
+
+        BIO_clear_retry_flags(bio);
+        ret = connect(bio->num, (struct sockaddr*) &c->them, c->them_length);
+        if (ret < 0) {
+          if (bio_fd_should_retry(ret)) {
+            BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
+            c->state = BIO_CONN_S_BLOCKED_CONNECT;
+            bio->retry_reason = BIO_RR_CONNECT;
+          } else {
+            OPENSSL_PUT_SYSTEM_ERROR();
+            OPENSSL_PUT_ERROR(BIO, BIO_R_CONNECT_ERROR);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":",
+                               c->param_port);
+          }
+          goto exit_loop;
+        } else {
+          c->state = BIO_CONN_S_OK;
+        }
+        break;
+
+      case BIO_CONN_S_BLOCKED_CONNECT:
+        i = bio_sock_error(bio->num);
+        if (i) {
+          if (bio_fd_should_retry(ret)) {
+            BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
+            c->state = BIO_CONN_S_BLOCKED_CONNECT;
+            bio->retry_reason = BIO_RR_CONNECT;
+            ret = -1;
+          } else {
+            BIO_clear_retry_flags(bio);
+            OPENSSL_PUT_SYSTEM_ERROR();
+            OPENSSL_PUT_ERROR(BIO, BIO_R_NBIO_CONNECT_ERROR);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+            ret = 0;
+          }
+          goto exit_loop;
+        } else {
+          c->state = BIO_CONN_S_OK;
+        }
+        break;
+
+      case BIO_CONN_S_OK:
+        ret = 1;
+        goto exit_loop;
+      default:
+        assert(0);
+        goto exit_loop;
+    }
+
+    if (cb != NULL) {
+      ret = cb((BIO *)bio, c->state, ret);
+      if (ret == 0) {
+        goto end;
+      }
+    }
+  }
+
+exit_loop:
+  if (cb != NULL) {
+    ret = cb((BIO *)bio, c->state, ret);
+  }
+
+end:
+  return ret;
+}
+
+static BIO_CONNECT *BIO_CONNECT_new(void) {
+  BIO_CONNECT *ret = OPENSSL_malloc(sizeof(BIO_CONNECT));
+
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(BIO_CONNECT));
+
+  ret->state = BIO_CONN_S_BEFORE;
+  return ret;
+}
+
+static void BIO_CONNECT_free(BIO_CONNECT *c) {
+  if (c == NULL) {
+    return;
+  }
+
+  OPENSSL_free(c->param_hostname);
+  OPENSSL_free(c->param_port);
+  OPENSSL_free(c);
+}
+
+static int conn_new(BIO *bio) {
+  bio->init = 0;
+  bio->num = -1;
+  bio->flags = 0;
+  bio->ptr = (char *)BIO_CONNECT_new();
+  return bio->ptr != NULL;
+}
+
+static void conn_close_socket(BIO *bio) {
+  BIO_CONNECT *c = (BIO_CONNECT *) bio->ptr;
+
+  if (bio->num == -1) {
+    return;
+  }
+
+  // Only do a shutdown if things were established
+  if (c->state == BIO_CONN_S_OK) {
+    shutdown(bio->num, 2);
+  }
+  closesocket(bio->num);
+  bio->num = -1;
+}
+
+static int conn_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    conn_close_socket(bio);
+  }
+
+  BIO_CONNECT_free((BIO_CONNECT*) bio->ptr);
+
+  return 1;
+}
+
+static int conn_read(BIO *bio, char *out, int out_len) {
+  int ret = 0;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+  if (data->state != BIO_CONN_S_OK) {
+    ret = conn_state(bio, data);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  bio_clear_socket_error();
+  ret = recv(bio->num, out, out_len, 0);
+  BIO_clear_retry_flags(bio);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(bio);
+    }
+  }
+
+  return ret;
+}
+
+static int conn_write(BIO *bio, const char *in, int in_len) {
+  int ret;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+  if (data->state != BIO_CONN_S_OK) {
+    ret = conn_state(bio, data);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  bio_clear_socket_error();
+  ret = send(bio->num, in, in_len, 0);
+  BIO_clear_retry_flags(bio);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(bio);
+    }
+  }
+
+  return ret;
+}
+
+static long conn_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  int *ip;
+  long ret = 1;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      ret = 0;
+      data->state = BIO_CONN_S_BEFORE;
+      conn_close_socket(bio);
+      bio->flags = 0;
+      break;
+    case BIO_C_DO_STATE_MACHINE:
+      // use this one to start the connection
+      if (data->state != BIO_CONN_S_OK) {
+        ret = (long)conn_state(bio, data);
+      } else {
+        ret = 1;
+      }
+      break;
+    case BIO_C_SET_CONNECT:
+      if (ptr != NULL) {
+        bio->init = 1;
+        if (num == 0) {
+          OPENSSL_free(data->param_hostname);
+          data->param_hostname = OPENSSL_strdup(ptr);
+          if (data->param_hostname == NULL) {
+            ret = 0;
+          }
+        } else if (num == 1) {
+          OPENSSL_free(data->param_port);
+          data->param_port = OPENSSL_strdup(ptr);
+          if (data->param_port == NULL) {
+            ret = 0;
+          }
+        } else {
+          ret = 0;
+        }
+      }
+      break;
+    case BIO_C_SET_NBIO:
+      data->nbio = (int)num;
+      break;
+    case BIO_C_GET_FD:
+      if (bio->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = bio->num;
+        }
+        ret = bio->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = bio->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      break;
+    case BIO_CTRL_PENDING:
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      break;
+    case BIO_CTRL_FLUSH:
+      break;
+    case BIO_CTRL_GET_CALLBACK: {
+      int (**fptr)(const BIO *bio, int state, int xret);
+      fptr = (int (**)(const BIO *bio, int state, int xret))ptr;
+      *fptr = data->info_callback;
+    } break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static long conn_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  long ret = 1;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_SET_CALLBACK:
+      data->info_callback = (int (*)(const struct bio_st *, int, int))fp;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+BIO *BIO_new_connect(const char *hostname) {
+  BIO *ret;
+
+  ret = BIO_new(BIO_s_connect());
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (!BIO_set_conn_hostname(ret, hostname)) {
+    BIO_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+static const BIO_METHOD methods_connectp = {
+    BIO_TYPE_CONNECT, "socket connect",   conn_write, conn_read,
+    NULL /* puts */,  NULL /* gets */,    conn_ctrl,  conn_new,
+    conn_free,        conn_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_s_connect(void) { return &methods_connectp; }
+
+int BIO_set_conn_hostname(BIO *bio, const char *name) {
+  return BIO_ctrl(bio, BIO_C_SET_CONNECT, 0, (void*) name);
+}
+
+int BIO_set_conn_port(BIO *bio, const char *port_str) {
+  return BIO_ctrl(bio, BIO_C_SET_CONNECT, 1, (void*) port_str);
+}
+
+int BIO_set_conn_int_port(BIO *bio, const int *port) {
+  char buf[DECIMAL_SIZE(int) + 1];
+  BIO_snprintf(buf, sizeof(buf), "%d", *port);
+  return BIO_set_conn_port(bio, buf);
+}
+
+int BIO_set_nbio(BIO *bio, int on) {
+  return BIO_ctrl(bio, BIO_C_SET_NBIO, on, NULL);
+}
+
+int BIO_do_connect(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_DO_STATE_MACHINE, 0, NULL);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c.grpc_back
new file mode 100644
index 0000000..b8afa61
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/connect.c.grpc_back	
@@ -0,0 +1,545 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+#include <ws2tcpip.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+enum {
+  BIO_CONN_S_BEFORE,
+  BIO_CONN_S_BLOCKED_CONNECT,
+  BIO_CONN_S_OK,
+};
+
+typedef struct bio_connect_st {
+  int state;
+
+  char *param_hostname;
+  char *param_port;
+  int nbio;
+
+  unsigned short port;
+
+  struct sockaddr_storage them;
+  socklen_t them_length;
+
+  // the file descriptor is kept in bio->num in order to match the socket
+  // BIO.
+
+  // info_callback is called when the connection is initially made
+  // callback(BIO,state,ret);  The callback should return 'ret', state is for
+  // compatibility with the SSL info_callback.
+  int (*info_callback)(const BIO *bio, int state, int ret);
+} BIO_CONNECT;
+
+#if !defined(OPENSSL_WINDOWS)
+static int closesocket(int sock) {
+  return close(sock);
+}
+#endif
+
+// split_host_and_port sets |*out_host| and |*out_port| to the host and port
+// parsed from |name|. It returns one on success or zero on error. Even when
+// successful, |*out_port| may be NULL on return if no port was specified.
+static int split_host_and_port(char **out_host, char **out_port, const char *name) {
+  const char *host, *port = NULL;
+  size_t host_len = 0;
+
+  *out_host = NULL;
+  *out_port = NULL;
+
+  if (name[0] == '[') {  // bracketed IPv6 address
+    const char *close = strchr(name, ']');
+    if (close == NULL) {
+      return 0;
+    }
+    host = name + 1;
+    host_len = close - host;
+    if (close[1] == ':') {  // [IP]:port
+      port = close + 2;
+    } else if (close[1] != 0) {
+      return 0;
+    }
+  } else {
+    const char *colon = strchr(name, ':');
+    if (colon == NULL || strchr(colon + 1, ':') != NULL) {  // IPv6 address
+      host = name;
+      host_len = strlen(name);
+    } else {  // host:port
+      host = name;
+      host_len = colon - name;
+      port = colon + 1;
+    }
+  }
+
+  *out_host = OPENSSL_strndup(host, host_len);
+  if (*out_host == NULL) {
+    return 0;
+  }
+  if (port == NULL) {
+    *out_port = NULL;
+    return 1;
+  }
+  *out_port = OPENSSL_strdup(port);
+  if (*out_port == NULL) {
+    OPENSSL_free(*out_host);
+    *out_host = NULL;
+    return 0;
+  }
+  return 1;
+}
+
+static int conn_state(BIO *bio, BIO_CONNECT *c) {
+  int ret = -1, i;
+  int (*cb)(const BIO *, int, int) = NULL;
+
+  if (c->info_callback != NULL) {
+    cb = c->info_callback;
+  }
+
+  for (;;) {
+    switch (c->state) {
+      case BIO_CONN_S_BEFORE:
+        // If there's a hostname and a port, assume that both are
+        // exactly what they say. If there is only a hostname, try
+        // (just once) to split it into a hostname and port.
+
+        if (c->param_hostname == NULL) {
+          OPENSSL_PUT_ERROR(BIO, BIO_R_NO_HOSTNAME_SPECIFIED);
+          goto exit_loop;
+        }
+
+        if (c->param_port == NULL) {
+          char *host, *port;
+          if (!split_host_and_port(&host, &port, c->param_hostname) ||
+              port == NULL) {
+            OPENSSL_free(host);
+            OPENSSL_free(port);
+            OPENSSL_PUT_ERROR(BIO, BIO_R_NO_PORT_SPECIFIED);
+            ERR_add_error_data(2, "host=", c->param_hostname);
+            goto exit_loop;
+          }
+
+          OPENSSL_free(c->param_port);
+          c->param_port = port;
+          OPENSSL_free(c->param_hostname);
+          c->param_hostname = host;
+        }
+
+        if (!bio_ip_and_port_to_socket_and_addr(
+                &bio->num, &c->them, &c->them_length, c->param_hostname,
+                c->param_port)) {
+          OPENSSL_PUT_ERROR(BIO, BIO_R_UNABLE_TO_CREATE_SOCKET);
+          ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+          goto exit_loop;
+        }
+
+        if (c->nbio) {
+          if (!bio_socket_nbio(bio->num, 1)) {
+            OPENSSL_PUT_ERROR(BIO, BIO_R_ERROR_SETTING_NBIO);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":",
+                               c->param_port);
+            goto exit_loop;
+          }
+        }
+
+        i = 1;
+        ret = setsockopt(bio->num, SOL_SOCKET, SO_KEEPALIVE, (char *)&i,
+                         sizeof(i));
+        if (ret < 0) {
+          OPENSSL_PUT_SYSTEM_ERROR();
+          OPENSSL_PUT_ERROR(BIO, BIO_R_KEEPALIVE);
+          ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+          goto exit_loop;
+        }
+
+        BIO_clear_retry_flags(bio);
+        ret = connect(bio->num, (struct sockaddr*) &c->them, c->them_length);
+        if (ret < 0) {
+          if (bio_fd_should_retry(ret)) {
+            BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
+            c->state = BIO_CONN_S_BLOCKED_CONNECT;
+            bio->retry_reason = BIO_RR_CONNECT;
+          } else {
+            OPENSSL_PUT_SYSTEM_ERROR();
+            OPENSSL_PUT_ERROR(BIO, BIO_R_CONNECT_ERROR);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":",
+                               c->param_port);
+          }
+          goto exit_loop;
+        } else {
+          c->state = BIO_CONN_S_OK;
+        }
+        break;
+
+      case BIO_CONN_S_BLOCKED_CONNECT:
+        i = bio_sock_error(bio->num);
+        if (i) {
+          if (bio_fd_should_retry(ret)) {
+            BIO_set_flags(bio, (BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY));
+            c->state = BIO_CONN_S_BLOCKED_CONNECT;
+            bio->retry_reason = BIO_RR_CONNECT;
+            ret = -1;
+          } else {
+            BIO_clear_retry_flags(bio);
+            OPENSSL_PUT_SYSTEM_ERROR();
+            OPENSSL_PUT_ERROR(BIO, BIO_R_NBIO_CONNECT_ERROR);
+            ERR_add_error_data(4, "host=", c->param_hostname, ":", c->param_port);
+            ret = 0;
+          }
+          goto exit_loop;
+        } else {
+          c->state = BIO_CONN_S_OK;
+        }
+        break;
+
+      case BIO_CONN_S_OK:
+        ret = 1;
+        goto exit_loop;
+      default:
+        assert(0);
+        goto exit_loop;
+    }
+
+    if (cb != NULL) {
+      ret = cb((BIO *)bio, c->state, ret);
+      if (ret == 0) {
+        goto end;
+      }
+    }
+  }
+
+exit_loop:
+  if (cb != NULL) {
+    ret = cb((BIO *)bio, c->state, ret);
+  }
+
+end:
+  return ret;
+}
+
+static BIO_CONNECT *BIO_CONNECT_new(void) {
+  BIO_CONNECT *ret = OPENSSL_malloc(sizeof(BIO_CONNECT));
+
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(BIO_CONNECT));
+
+  ret->state = BIO_CONN_S_BEFORE;
+  return ret;
+}
+
+static void BIO_CONNECT_free(BIO_CONNECT *c) {
+  if (c == NULL) {
+    return;
+  }
+
+  OPENSSL_free(c->param_hostname);
+  OPENSSL_free(c->param_port);
+  OPENSSL_free(c);
+}
+
+static int conn_new(BIO *bio) {
+  bio->init = 0;
+  bio->num = -1;
+  bio->flags = 0;
+  bio->ptr = (char *)BIO_CONNECT_new();
+  return bio->ptr != NULL;
+}
+
+static void conn_close_socket(BIO *bio) {
+  BIO_CONNECT *c = (BIO_CONNECT *) bio->ptr;
+
+  if (bio->num == -1) {
+    return;
+  }
+
+  // Only do a shutdown if things were established
+  if (c->state == BIO_CONN_S_OK) {
+    shutdown(bio->num, 2);
+  }
+  closesocket(bio->num);
+  bio->num = -1;
+}
+
+static int conn_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    conn_close_socket(bio);
+  }
+
+  BIO_CONNECT_free((BIO_CONNECT*) bio->ptr);
+
+  return 1;
+}
+
+static int conn_read(BIO *bio, char *out, int out_len) {
+  int ret = 0;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+  if (data->state != BIO_CONN_S_OK) {
+    ret = conn_state(bio, data);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  bio_clear_socket_error();
+  ret = recv(bio->num, out, out_len, 0);
+  BIO_clear_retry_flags(bio);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(bio);
+    }
+  }
+
+  return ret;
+}
+
+static int conn_write(BIO *bio, const char *in, int in_len) {
+  int ret;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+  if (data->state != BIO_CONN_S_OK) {
+    ret = conn_state(bio, data);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  bio_clear_socket_error();
+  ret = send(bio->num, in, in_len, 0);
+  BIO_clear_retry_flags(bio);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(bio);
+    }
+  }
+
+  return ret;
+}
+
+static long conn_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  int *ip;
+  long ret = 1;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      ret = 0;
+      data->state = BIO_CONN_S_BEFORE;
+      conn_close_socket(bio);
+      bio->flags = 0;
+      break;
+    case BIO_C_DO_STATE_MACHINE:
+      // use this one to start the connection
+      if (data->state != BIO_CONN_S_OK) {
+        ret = (long)conn_state(bio, data);
+      } else {
+        ret = 1;
+      }
+      break;
+    case BIO_C_SET_CONNECT:
+      if (ptr != NULL) {
+        bio->init = 1;
+        if (num == 0) {
+          OPENSSL_free(data->param_hostname);
+          data->param_hostname = OPENSSL_strdup(ptr);
+          if (data->param_hostname == NULL) {
+            ret = 0;
+          }
+        } else if (num == 1) {
+          OPENSSL_free(data->param_port);
+          data->param_port = OPENSSL_strdup(ptr);
+          if (data->param_port == NULL) {
+            ret = 0;
+          }
+        } else {
+          ret = 0;
+        }
+      }
+      break;
+    case BIO_C_SET_NBIO:
+      data->nbio = (int)num;
+      break;
+    case BIO_C_GET_FD:
+      if (bio->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = bio->num;
+        }
+        ret = bio->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = bio->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      break;
+    case BIO_CTRL_PENDING:
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      break;
+    case BIO_CTRL_FLUSH:
+      break;
+    case BIO_CTRL_GET_CALLBACK: {
+      int (**fptr)(const BIO *bio, int state, int xret);
+      fptr = (int (**)(const BIO *bio, int state, int xret))ptr;
+      *fptr = data->info_callback;
+    } break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static long conn_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  long ret = 1;
+  BIO_CONNECT *data;
+
+  data = (BIO_CONNECT *)bio->ptr;
+
+  switch (cmd) {
+    case BIO_CTRL_SET_CALLBACK:
+      data->info_callback = (int (*)(const struct bio_st *, int, int))fp;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+BIO *BIO_new_connect(const char *hostname) {
+  BIO *ret;
+
+  ret = BIO_new(BIO_s_connect());
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (!BIO_set_conn_hostname(ret, hostname)) {
+    BIO_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+static const BIO_METHOD methods_connectp = {
+    BIO_TYPE_CONNECT, "socket connect",   conn_write, conn_read,
+    NULL /* puts */,  NULL /* gets */,    conn_ctrl,  conn_new,
+    conn_free,        conn_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_s_connect(void) { return &methods_connectp; }
+
+int BIO_set_conn_hostname(BIO *bio, const char *name) {
+  return BIO_ctrl(bio, BIO_C_SET_CONNECT, 0, (void*) name);
+}
+
+int BIO_set_conn_port(BIO *bio, const char *port_str) {
+  return BIO_ctrl(bio, BIO_C_SET_CONNECT, 1, (void*) port_str);
+}
+
+int BIO_set_conn_int_port(BIO *bio, const int *port) {
+  char buf[DECIMAL_SIZE(int) + 1];
+  BIO_snprintf(buf, sizeof(buf), "%d", *port);
+  return BIO_set_conn_port(bio, buf);
+}
+
+int BIO_set_nbio(BIO *bio, int on) {
+  return BIO_ctrl(bio, BIO_C_SET_NBIO, on, NULL);
+}
+
+int BIO_do_connect(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_DO_STATE_MACHINE, 0, NULL);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c
new file mode 100644
index 0000000..bf83b16
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c	
@@ -0,0 +1,279 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <errno.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <unistd.h>
+#else
+#include <io.h>
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static int bio_fd_non_fatal_error(int err) {
+  if (
+#ifdef EWOULDBLOCK
+    err == EWOULDBLOCK ||
+#endif
+#ifdef WSAEWOULDBLOCK
+    err == WSAEWOULDBLOCK ||
+#endif
+#ifdef ENOTCONN
+    err == ENOTCONN ||
+#endif
+#ifdef EINTR
+    err == EINTR ||
+#endif
+#ifdef EAGAIN
+    err == EAGAIN ||
+#endif
+#ifdef EPROTO
+    err == EPROTO ||
+#endif
+#ifdef EINPROGRESS
+    err == EINPROGRESS ||
+#endif
+#ifdef EALREADY
+    err == EALREADY ||
+#endif
+    0) {
+    return 1;
+  }
+  return 0;
+}
+
+#if defined(OPENSSL_WINDOWS)
+  #define BORINGSSL_ERRNO (int)GetLastError()
+  #define BORINGSSL_CLOSE _close
+  #define BORINGSSL_LSEEK _lseek
+  #define BORINGSSL_READ _read
+  #define BORINGSSL_WRITE _write
+#else
+  #define BORINGSSL_ERRNO errno
+  #define BORINGSSL_CLOSE close
+  #define BORINGSSL_LSEEK lseek
+  #define BORINGSSL_READ read
+  #define BORINGSSL_WRITE write
+#endif
+
+int bio_fd_should_retry(int i) {
+  if (i == -1) {
+    return bio_fd_non_fatal_error(BORINGSSL_ERRNO);
+  }
+  return 0;
+}
+
+BIO *BIO_new_fd(int fd, int close_flag) {
+  BIO *ret = BIO_new(BIO_s_fd());
+  if (ret == NULL) {
+    return NULL;
+  }
+  BIO_set_fd(ret, fd, close_flag);
+  return ret;
+}
+
+static int fd_new(BIO *bio) {
+  // num is used to store the file descriptor.
+  bio->num = -1;
+  return 1;
+}
+
+static int fd_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    if (bio->init) {
+      BORINGSSL_CLOSE(bio->num);
+    }
+    bio->init = 0;
+  }
+  return 1;
+}
+
+static int fd_read(BIO *b, char *out, int outl) {
+  int ret = 0;
+
+  ret = BORINGSSL_READ(b->num, out, outl);
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(b);
+    }
+  }
+
+  return ret;
+}
+
+static int fd_write(BIO *b, const char *in, int inl) {
+  int ret = BORINGSSL_WRITE(b->num, in, inl);
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(b);
+    }
+  }
+
+  return ret;
+}
+
+static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  int *ip;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      num = 0;
+      OPENSSL_FALLTHROUGH;
+    case BIO_C_FILE_SEEK:
+      ret = 0;
+      if (b->init) {
+        ret = (long)BORINGSSL_LSEEK(b->num, num, SEEK_SET);
+      }
+      break;
+    case BIO_C_FILE_TELL:
+    case BIO_CTRL_INFO:
+      ret = 0;
+      if (b->init) {
+        ret = (long)BORINGSSL_LSEEK(b->num, 0, SEEK_CUR);
+      }
+      break;
+    case BIO_C_SET_FD:
+      fd_free(b);
+      b->num = *((int *)ptr);
+      b->shutdown = (int)num;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FD:
+      if (b->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = b->num;
+        }
+        return b->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_PENDING:
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+
+  return ret;
+}
+
+static int fd_gets(BIO *bp, char *buf, int size) {
+  char *ptr = buf;
+  char *end = buf + size - 1;
+
+  if (size <= 0) {
+    return 0;
+  }
+
+  while (ptr < end && fd_read(bp, ptr, 1) > 0 && ptr[0] != '\n') {
+    ptr++;
+  }
+
+  ptr[0] = '\0';
+
+  return ptr - buf;
+}
+
+static const BIO_METHOD methods_fdp = {
+    BIO_TYPE_FD, "file descriptor", fd_write, fd_read, NULL /* puts */,
+    fd_gets,     fd_ctrl,           fd_new,   fd_free, NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_fd(void) { return &methods_fdp; }
+
+int BIO_set_fd(BIO *bio, int fd, int close_flag) {
+  return BIO_int_ctrl(bio, BIO_C_SET_FD, close_flag, fd);
+}
+
+int BIO_get_fd(BIO *bio, int *out_fd) {
+  return BIO_ctrl(bio, BIO_C_GET_FD, 0, (char *) out_fd);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c.grpc_back
new file mode 100644
index 0000000..d4e6918
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/fd.c.grpc_back	
@@ -0,0 +1,279 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <errno.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <unistd.h>
+#else
+#include <io.h>
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static int bio_fd_non_fatal_error(int err) {
+  if (
+#ifdef EWOULDBLOCK
+    err == EWOULDBLOCK ||
+#endif
+#ifdef WSAEWOULDBLOCK
+    err == WSAEWOULDBLOCK ||
+#endif
+#ifdef ENOTCONN
+    err == ENOTCONN ||
+#endif
+#ifdef EINTR
+    err == EINTR ||
+#endif
+#ifdef EAGAIN
+    err == EAGAIN ||
+#endif
+#ifdef EPROTO
+    err == EPROTO ||
+#endif
+#ifdef EINPROGRESS
+    err == EINPROGRESS ||
+#endif
+#ifdef EALREADY
+    err == EALREADY ||
+#endif
+    0) {
+    return 1;
+  }
+  return 0;
+}
+
+#if defined(OPENSSL_WINDOWS)
+  #define BORINGSSL_ERRNO (int)GetLastError()
+  #define BORINGSSL_CLOSE _close
+  #define BORINGSSL_LSEEK _lseek
+  #define BORINGSSL_READ _read
+  #define BORINGSSL_WRITE _write
+#else
+  #define BORINGSSL_ERRNO errno
+  #define BORINGSSL_CLOSE close
+  #define BORINGSSL_LSEEK lseek
+  #define BORINGSSL_READ read
+  #define BORINGSSL_WRITE write
+#endif
+
+int bio_fd_should_retry(int i) {
+  if (i == -1) {
+    return bio_fd_non_fatal_error(BORINGSSL_ERRNO);
+  }
+  return 0;
+}
+
+BIO *BIO_new_fd(int fd, int close_flag) {
+  BIO *ret = BIO_new(BIO_s_fd());
+  if (ret == NULL) {
+    return NULL;
+  }
+  BIO_set_fd(ret, fd, close_flag);
+  return ret;
+}
+
+static int fd_new(BIO *bio) {
+  // num is used to store the file descriptor.
+  bio->num = -1;
+  return 1;
+}
+
+static int fd_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    if (bio->init) {
+      BORINGSSL_CLOSE(bio->num);
+    }
+    bio->init = 0;
+  }
+  return 1;
+}
+
+static int fd_read(BIO *b, char *out, int outl) {
+  int ret = 0;
+
+  ret = BORINGSSL_READ(b->num, out, outl);
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(b);
+    }
+  }
+
+  return ret;
+}
+
+static int fd_write(BIO *b, const char *in, int inl) {
+  int ret = BORINGSSL_WRITE(b->num, in, inl);
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(b);
+    }
+  }
+
+  return ret;
+}
+
+static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  int *ip;
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      num = 0;
+      OPENSSL_FALLTHROUGH;
+    case BIO_C_FILE_SEEK:
+      ret = 0;
+      if (b->init) {
+        ret = (long)BORINGSSL_LSEEK(b->num, num, SEEK_SET);
+      }
+      break;
+    case BIO_C_FILE_TELL:
+    case BIO_CTRL_INFO:
+      ret = 0;
+      if (b->init) {
+        ret = (long)BORINGSSL_LSEEK(b->num, 0, SEEK_CUR);
+      }
+      break;
+    case BIO_C_SET_FD:
+      fd_free(b);
+      b->num = *((int *)ptr);
+      b->shutdown = (int)num;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FD:
+      if (b->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = b->num;
+        }
+        return b->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_PENDING:
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+
+  return ret;
+}
+
+static int fd_gets(BIO *bp, char *buf, int size) {
+  char *ptr = buf;
+  char *end = buf + size - 1;
+
+  if (size <= 0) {
+    return 0;
+  }
+
+  while (ptr < end && fd_read(bp, ptr, 1) > 0 && ptr[0] != '\n') {
+    ptr++;
+  }
+
+  ptr[0] = '\0';
+
+  return ptr - buf;
+}
+
+static const BIO_METHOD methods_fdp = {
+    BIO_TYPE_FD, "file descriptor", fd_write, fd_read, NULL /* puts */,
+    fd_gets,     fd_ctrl,           fd_new,   fd_free, NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_fd(void) { return &methods_fdp; }
+
+int BIO_set_fd(BIO *bio, int fd, int close_flag) {
+  return BIO_int_ctrl(bio, BIO_C_SET_FD, close_flag, fd);
+}
+
+int BIO_get_fd(BIO *bio, int *out_fd) {
+  return BIO_ctrl(bio, BIO_C_GET_FD, 0, (char *) out_fd);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c
new file mode 100644
index 0000000..6405f24
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c	
@@ -0,0 +1,317 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#if defined(__linux) || defined(__sun) || defined(__hpux)
+// Following definition aliases fopen to fopen64 on above mentioned
+// platforms. This makes it possible to open and sequentially access
+// files larger than 2GB from 32-bit application. It does not allow to
+// traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
+// 32-bit platform permits that, not with fseek/ftell. Not to mention
+// that breaking 2GB limit for seeking would require surgery to *our*
+// API. But sequential access suffices for practical cases when you
+// can run into large files, such as fingerprinting, so we can let API
+// alone. For reference, the list of 32-bit platforms which allow for
+// sequential access of large files without extra "magic" comprise *BSD,
+// Darwin, IRIX...
+#ifndef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#endif
+
+#include <openssl_grpc/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+#define BIO_FP_READ 0x02
+#define BIO_FP_WRITE 0x04
+#define BIO_FP_APPEND 0x08
+
+BIO *BIO_new_file(const char *filename, const char *mode) {
+  BIO *ret;
+  FILE *file;
+
+  file = fopen(filename, mode);
+  if (file == NULL) {
+    OPENSSL_PUT_SYSTEM_ERROR();
+
+    ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
+    if (errno == ENOENT) {
+      OPENSSL_PUT_ERROR(BIO, BIO_R_NO_SUCH_FILE);
+    } else {
+      OPENSSL_PUT_ERROR(BIO, BIO_R_SYS_LIB);
+    }
+    return NULL;
+  }
+
+  ret = BIO_new_fp(file, BIO_CLOSE);
+  if (ret == NULL) {
+    fclose(file);
+    return NULL;
+  }
+
+  return ret;
+}
+
+BIO *BIO_new_fp(FILE *stream, int close_flag) {
+  BIO *ret = BIO_new(BIO_s_file());
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  BIO_set_fp(ret, stream, close_flag);
+  return ret;
+}
+
+static int file_new(BIO *bio) { return 1; }
+
+static int file_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (!bio->shutdown) {
+    return 1;
+  }
+
+  if (bio->init && bio->ptr != NULL) {
+    fclose(bio->ptr);
+    bio->ptr = NULL;
+  }
+  bio->init = 0;
+
+  return 1;
+}
+
+static int file_read(BIO *b, char *out, int outl) {
+  if (!b->init) {
+    return 0;
+  }
+
+  size_t ret = fread(out, 1, outl, (FILE *)b->ptr);
+  if (ret == 0 && ferror((FILE *)b->ptr)) {
+    OPENSSL_PUT_SYSTEM_ERROR();
+    OPENSSL_PUT_ERROR(BIO, ERR_R_SYS_LIB);
+    return -1;
+  }
+
+  // fread reads at most |outl| bytes, so |ret| fits in an int.
+  return (int)ret;
+}
+
+static int file_write(BIO *b, const char *in, int inl) {
+  int ret = 0;
+
+  if (!b->init) {
+    return 0;
+  }
+
+  ret = fwrite(in, inl, 1, (FILE *)b->ptr);
+  if (ret > 0) {
+    ret = inl;
+  }
+  return ret;
+}
+
+static long file_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  FILE *fp = (FILE *)b->ptr;
+  FILE **fpp;
+  char p[4];
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      num = 0;
+      OPENSSL_FALLTHROUGH;
+    case BIO_C_FILE_SEEK:
+      ret = (long)fseek(fp, num, 0);
+      break;
+    case BIO_CTRL_EOF:
+      ret = (long)feof(fp);
+      break;
+    case BIO_C_FILE_TELL:
+    case BIO_CTRL_INFO:
+      ret = ftell(fp);
+      break;
+    case BIO_C_SET_FILE_PTR:
+      file_free(b);
+      b->shutdown = (int)num & BIO_CLOSE;
+      b->ptr = ptr;
+      b->init = 1;
+      break;
+    case BIO_C_SET_FILENAME:
+      file_free(b);
+      b->shutdown = (int)num & BIO_CLOSE;
+      if (num & BIO_FP_APPEND) {
+        if (num & BIO_FP_READ) {
+          OPENSSL_strlcpy(p, "a+", sizeof(p));
+        } else {
+          OPENSSL_strlcpy(p, "a", sizeof(p));
+        }
+      } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE)) {
+        OPENSSL_strlcpy(p, "r+", sizeof(p));
+      } else if (num & BIO_FP_WRITE) {
+        OPENSSL_strlcpy(p, "w", sizeof(p));
+      } else if (num & BIO_FP_READ) {
+        OPENSSL_strlcpy(p, "r", sizeof(p));
+      } else {
+        OPENSSL_PUT_ERROR(BIO, BIO_R_BAD_FOPEN_MODE);
+        ret = 0;
+        break;
+      }
+      fp = fopen(ptr, p);
+      if (fp == NULL) {
+        OPENSSL_PUT_SYSTEM_ERROR();
+        ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
+        OPENSSL_PUT_ERROR(BIO, ERR_R_SYS_LIB);
+        ret = 0;
+        break;
+      }
+      b->ptr = fp;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FILE_PTR:
+      // the ptr parameter is actually a FILE ** in this case.
+      if (ptr != NULL) {
+        fpp = (FILE **)ptr;
+        *fpp = (FILE *)b->ptr;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = (long)b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 0 == fflush((FILE *)b->ptr);
+      break;
+    case BIO_CTRL_WPENDING:
+    case BIO_CTRL_PENDING:
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static int file_gets(BIO *bp, char *buf, int size) {
+  int ret = 0;
+
+  if (size == 0) {
+    return 0;
+  }
+
+  if (!fgets(buf, size, (FILE *)bp->ptr)) {
+    buf[0] = 0;
+    goto err;
+  }
+  ret = strlen(buf);
+
+err:
+  return ret;
+}
+
+static const BIO_METHOD methods_filep = {
+    BIO_TYPE_FILE,   "FILE pointer",
+    file_write,      file_read,
+    NULL /* puts */, file_gets,
+    file_ctrl,       file_new,
+    file_free,       NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_file(void) { return &methods_filep; }
+
+
+int BIO_get_fp(BIO *bio, FILE **out_file) {
+  return BIO_ctrl(bio, BIO_C_GET_FILE_PTR, 0, (char*) out_file);
+}
+
+int BIO_set_fp(BIO *bio, FILE *file, int close_flag) {
+  return BIO_ctrl(bio, BIO_C_SET_FILE_PTR, close_flag, (char *) file);
+}
+
+int BIO_read_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_READ,
+                  (char *)filename);
+}
+
+int BIO_write_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_WRITE,
+                  (char *)filename);
+}
+
+int BIO_append_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_APPEND,
+                  (char *)filename);
+}
+
+int BIO_rw_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME,
+                  BIO_CLOSE | BIO_FP_READ | BIO_FP_WRITE, (char *)filename);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c.grpc_back
new file mode 100644
index 0000000..15feb9d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/file.c.grpc_back	
@@ -0,0 +1,317 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#if defined(__linux) || defined(__sun) || defined(__hpux)
+// Following definition aliases fopen to fopen64 on above mentioned
+// platforms. This makes it possible to open and sequentially access
+// files larger than 2GB from 32-bit application. It does not allow to
+// traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
+// 32-bit platform permits that, not with fseek/ftell. Not to mention
+// that breaking 2GB limit for seeking would require surgery to *our*
+// API. But sequential access suffices for practical cases when you
+// can run into large files, such as fingerprinting, so we can let API
+// alone. For reference, the list of 32-bit platforms which allow for
+// sequential access of large files without extra "magic" comprise *BSD,
+// Darwin, IRIX...
+#ifndef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#endif
+
+#include <openssl/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+#define BIO_FP_READ 0x02
+#define BIO_FP_WRITE 0x04
+#define BIO_FP_APPEND 0x08
+
+BIO *BIO_new_file(const char *filename, const char *mode) {
+  BIO *ret;
+  FILE *file;
+
+  file = fopen(filename, mode);
+  if (file == NULL) {
+    OPENSSL_PUT_SYSTEM_ERROR();
+
+    ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
+    if (errno == ENOENT) {
+      OPENSSL_PUT_ERROR(BIO, BIO_R_NO_SUCH_FILE);
+    } else {
+      OPENSSL_PUT_ERROR(BIO, BIO_R_SYS_LIB);
+    }
+    return NULL;
+  }
+
+  ret = BIO_new_fp(file, BIO_CLOSE);
+  if (ret == NULL) {
+    fclose(file);
+    return NULL;
+  }
+
+  return ret;
+}
+
+BIO *BIO_new_fp(FILE *stream, int close_flag) {
+  BIO *ret = BIO_new(BIO_s_file());
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  BIO_set_fp(ret, stream, close_flag);
+  return ret;
+}
+
+static int file_new(BIO *bio) { return 1; }
+
+static int file_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (!bio->shutdown) {
+    return 1;
+  }
+
+  if (bio->init && bio->ptr != NULL) {
+    fclose(bio->ptr);
+    bio->ptr = NULL;
+  }
+  bio->init = 0;
+
+  return 1;
+}
+
+static int file_read(BIO *b, char *out, int outl) {
+  if (!b->init) {
+    return 0;
+  }
+
+  size_t ret = fread(out, 1, outl, (FILE *)b->ptr);
+  if (ret == 0 && ferror((FILE *)b->ptr)) {
+    OPENSSL_PUT_SYSTEM_ERROR();
+    OPENSSL_PUT_ERROR(BIO, ERR_R_SYS_LIB);
+    return -1;
+  }
+
+  // fread reads at most |outl| bytes, so |ret| fits in an int.
+  return (int)ret;
+}
+
+static int file_write(BIO *b, const char *in, int inl) {
+  int ret = 0;
+
+  if (!b->init) {
+    return 0;
+  }
+
+  ret = fwrite(in, inl, 1, (FILE *)b->ptr);
+  if (ret > 0) {
+    ret = inl;
+  }
+  return ret;
+}
+
+static long file_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  FILE *fp = (FILE *)b->ptr;
+  FILE **fpp;
+  char p[4];
+
+  switch (cmd) {
+    case BIO_CTRL_RESET:
+      num = 0;
+      OPENSSL_FALLTHROUGH;
+    case BIO_C_FILE_SEEK:
+      ret = (long)fseek(fp, num, 0);
+      break;
+    case BIO_CTRL_EOF:
+      ret = (long)feof(fp);
+      break;
+    case BIO_C_FILE_TELL:
+    case BIO_CTRL_INFO:
+      ret = ftell(fp);
+      break;
+    case BIO_C_SET_FILE_PTR:
+      file_free(b);
+      b->shutdown = (int)num & BIO_CLOSE;
+      b->ptr = ptr;
+      b->init = 1;
+      break;
+    case BIO_C_SET_FILENAME:
+      file_free(b);
+      b->shutdown = (int)num & BIO_CLOSE;
+      if (num & BIO_FP_APPEND) {
+        if (num & BIO_FP_READ) {
+          OPENSSL_strlcpy(p, "a+", sizeof(p));
+        } else {
+          OPENSSL_strlcpy(p, "a", sizeof(p));
+        }
+      } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE)) {
+        OPENSSL_strlcpy(p, "r+", sizeof(p));
+      } else if (num & BIO_FP_WRITE) {
+        OPENSSL_strlcpy(p, "w", sizeof(p));
+      } else if (num & BIO_FP_READ) {
+        OPENSSL_strlcpy(p, "r", sizeof(p));
+      } else {
+        OPENSSL_PUT_ERROR(BIO, BIO_R_BAD_FOPEN_MODE);
+        ret = 0;
+        break;
+      }
+      fp = fopen(ptr, p);
+      if (fp == NULL) {
+        OPENSSL_PUT_SYSTEM_ERROR();
+        ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
+        OPENSSL_PUT_ERROR(BIO, ERR_R_SYS_LIB);
+        ret = 0;
+        break;
+      }
+      b->ptr = fp;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FILE_PTR:
+      // the ptr parameter is actually a FILE ** in this case.
+      if (ptr != NULL) {
+        fpp = (FILE **)ptr;
+        *fpp = (FILE *)b->ptr;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = (long)b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 0 == fflush((FILE *)b->ptr);
+      break;
+    case BIO_CTRL_WPENDING:
+    case BIO_CTRL_PENDING:
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static int file_gets(BIO *bp, char *buf, int size) {
+  int ret = 0;
+
+  if (size == 0) {
+    return 0;
+  }
+
+  if (!fgets(buf, size, (FILE *)bp->ptr)) {
+    buf[0] = 0;
+    goto err;
+  }
+  ret = strlen(buf);
+
+err:
+  return ret;
+}
+
+static const BIO_METHOD methods_filep = {
+    BIO_TYPE_FILE,   "FILE pointer",
+    file_write,      file_read,
+    NULL /* puts */, file_gets,
+    file_ctrl,       file_new,
+    file_free,       NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_file(void) { return &methods_filep; }
+
+
+int BIO_get_fp(BIO *bio, FILE **out_file) {
+  return BIO_ctrl(bio, BIO_C_GET_FILE_PTR, 0, (char*) out_file);
+}
+
+int BIO_set_fp(BIO *bio, FILE *file, int close_flag) {
+  return BIO_ctrl(bio, BIO_C_SET_FILE_PTR, close_flag, (char *) file);
+}
+
+int BIO_read_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_READ,
+                  (char *)filename);
+}
+
+int BIO_write_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_WRITE,
+                  (char *)filename);
+}
+
+int BIO_append_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME, BIO_CLOSE | BIO_FP_APPEND,
+                  (char *)filename);
+}
+
+int BIO_rw_filename(BIO *bio, const char *filename) {
+  return BIO_ctrl(bio, BIO_C_SET_FILENAME,
+                  BIO_CLOSE | BIO_FP_READ | BIO_FP_WRITE, (char *)filename);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c
new file mode 100644
index 0000000..e3c45f0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c	
@@ -0,0 +1,192 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include "../internal.h"
+
+
+// hexdump_ctx contains the state of a hexdump.
+struct hexdump_ctx {
+  BIO *bio;
+  char right_chars[18];  // the contents of the right-hand side, ASCII dump.
+  unsigned used;         // number of bytes in the current line.
+  size_t n;              // number of bytes total.
+  unsigned indent;
+};
+
+static void hexbyte(char *out, uint8_t b) {
+  static const char hextable[] = "0123456789abcdef";
+  out[0] = hextable[b>>4];
+  out[1] = hextable[b&0x0f];
+}
+
+static char to_char(uint8_t b) {
+  if (b < 32 || b > 126) {
+          return '.';
+  }
+  return b;
+}
+
+// hexdump_write adds |len| bytes of |data| to the current hex dump described by
+// |ctx|.
+static int hexdump_write(struct hexdump_ctx *ctx, const uint8_t *data,
+                         size_t len) {
+  char buf[10];
+  unsigned l;
+
+  // Output lines look like:
+  // 00000010  2e 2f 30 31 32 33 34 35  36 37 38 ... 3c 3d // |./0123456789:;<=|
+  // ^ offset                          ^ extra space           ^ ASCII of line
+
+  for (size_t i = 0; i < len; i++) {
+    if (ctx->used == 0) {
+      // The beginning of a line.
+      BIO_indent(ctx->bio, ctx->indent, UINT_MAX);
+
+      hexbyte(&buf[0], ctx->n >> 24);
+      hexbyte(&buf[2], ctx->n >> 16);
+      hexbyte(&buf[4], ctx->n >> 8);
+      hexbyte(&buf[6], ctx->n);
+      buf[8] = buf[9] = ' ';
+      if (BIO_write(ctx->bio, buf, 10) < 0) {
+        return 0;
+      }
+    }
+
+    hexbyte(buf, data[i]);
+    buf[2] = ' ';
+    l = 3;
+    if (ctx->used == 7) {
+      // There's an additional space after the 8th byte.
+      buf[3] = ' ';
+      l = 4;
+    } else if (ctx->used == 15) {
+      // At the end of the line there's an extra space and the bar for the
+      // right column.
+      buf[3] = ' ';
+      buf[4] = '|';
+      l = 5;
+    }
+
+    if (BIO_write(ctx->bio, buf, l) < 0) {
+      return 0;
+    }
+    ctx->right_chars[ctx->used] = to_char(data[i]);
+    ctx->used++;
+    ctx->n++;
+    if (ctx->used == 16) {
+      ctx->right_chars[16] = '|';
+      ctx->right_chars[17] = '\n';
+      if (BIO_write(ctx->bio, ctx->right_chars, sizeof(ctx->right_chars)) < 0) {
+        return 0;
+      }
+      ctx->used = 0;
+    }
+  }
+
+  return 1;
+}
+
+// finish flushes any buffered data in |ctx|.
+static int finish(struct hexdump_ctx *ctx) {
+  // See the comments in |hexdump| for the details of this format.
+  const unsigned n_bytes = ctx->used;
+  unsigned l;
+  char buf[5];
+
+  if (n_bytes == 0) {
+    return 1;
+  }
+
+  OPENSSL_memset(buf, ' ', 4);
+  buf[4] = '|';
+
+  for (; ctx->used < 16; ctx->used++) {
+    l = 3;
+    if (ctx->used == 7) {
+      l = 4;
+    } else if (ctx->used == 15) {
+      l = 5;
+    }
+    if (BIO_write(ctx->bio, buf, l) < 0) {
+      return 0;
+    }
+  }
+
+  ctx->right_chars[n_bytes] = '|';
+  ctx->right_chars[n_bytes + 1] = '\n';
+  if (BIO_write(ctx->bio, ctx->right_chars, n_bytes + 2) < 0) {
+    return 0;
+  }
+  return 1;
+}
+
+int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len, unsigned indent) {
+  struct hexdump_ctx ctx;
+  OPENSSL_memset(&ctx, 0, sizeof(ctx));
+  ctx.bio = bio;
+  ctx.indent = indent;
+
+  if (!hexdump_write(&ctx, data, len) || !finish(&ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c.grpc_back
new file mode 100644
index 0000000..6d928bc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/hexdump.c.grpc_back	
@@ -0,0 +1,192 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include "../internal.h"
+
+
+// hexdump_ctx contains the state of a hexdump.
+struct hexdump_ctx {
+  BIO *bio;
+  char right_chars[18];  // the contents of the right-hand side, ASCII dump.
+  unsigned used;         // number of bytes in the current line.
+  size_t n;              // number of bytes total.
+  unsigned indent;
+};
+
+static void hexbyte(char *out, uint8_t b) {
+  static const char hextable[] = "0123456789abcdef";
+  out[0] = hextable[b>>4];
+  out[1] = hextable[b&0x0f];
+}
+
+static char to_char(uint8_t b) {
+  if (b < 32 || b > 126) {
+          return '.';
+  }
+  return b;
+}
+
+// hexdump_write adds |len| bytes of |data| to the current hex dump described by
+// |ctx|.
+static int hexdump_write(struct hexdump_ctx *ctx, const uint8_t *data,
+                         size_t len) {
+  char buf[10];
+  unsigned l;
+
+  // Output lines look like:
+  // 00000010  2e 2f 30 31 32 33 34 35  36 37 38 ... 3c 3d // |./0123456789:;<=|
+  // ^ offset                          ^ extra space           ^ ASCII of line
+
+  for (size_t i = 0; i < len; i++) {
+    if (ctx->used == 0) {
+      // The beginning of a line.
+      BIO_indent(ctx->bio, ctx->indent, UINT_MAX);
+
+      hexbyte(&buf[0], ctx->n >> 24);
+      hexbyte(&buf[2], ctx->n >> 16);
+      hexbyte(&buf[4], ctx->n >> 8);
+      hexbyte(&buf[6], ctx->n);
+      buf[8] = buf[9] = ' ';
+      if (BIO_write(ctx->bio, buf, 10) < 0) {
+        return 0;
+      }
+    }
+
+    hexbyte(buf, data[i]);
+    buf[2] = ' ';
+    l = 3;
+    if (ctx->used == 7) {
+      // There's an additional space after the 8th byte.
+      buf[3] = ' ';
+      l = 4;
+    } else if (ctx->used == 15) {
+      // At the end of the line there's an extra space and the bar for the
+      // right column.
+      buf[3] = ' ';
+      buf[4] = '|';
+      l = 5;
+    }
+
+    if (BIO_write(ctx->bio, buf, l) < 0) {
+      return 0;
+    }
+    ctx->right_chars[ctx->used] = to_char(data[i]);
+    ctx->used++;
+    ctx->n++;
+    if (ctx->used == 16) {
+      ctx->right_chars[16] = '|';
+      ctx->right_chars[17] = '\n';
+      if (BIO_write(ctx->bio, ctx->right_chars, sizeof(ctx->right_chars)) < 0) {
+        return 0;
+      }
+      ctx->used = 0;
+    }
+  }
+
+  return 1;
+}
+
+// finish flushes any buffered data in |ctx|.
+static int finish(struct hexdump_ctx *ctx) {
+  // See the comments in |hexdump| for the details of this format.
+  const unsigned n_bytes = ctx->used;
+  unsigned l;
+  char buf[5];
+
+  if (n_bytes == 0) {
+    return 1;
+  }
+
+  OPENSSL_memset(buf, ' ', 4);
+  buf[4] = '|';
+
+  for (; ctx->used < 16; ctx->used++) {
+    l = 3;
+    if (ctx->used == 7) {
+      l = 4;
+    } else if (ctx->used == 15) {
+      l = 5;
+    }
+    if (BIO_write(ctx->bio, buf, l) < 0) {
+      return 0;
+    }
+  }
+
+  ctx->right_chars[n_bytes] = '|';
+  ctx->right_chars[n_bytes + 1] = '\n';
+  if (BIO_write(ctx->bio, ctx->right_chars, n_bytes + 2) < 0) {
+    return 0;
+  }
+  return 1;
+}
+
+int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len, unsigned indent) {
+  struct hexdump_ctx ctx;
+  OPENSSL_memset(&ctx, 0, sizeof(ctx));
+  ctx.bio = bio;
+  ctx.indent = indent;
+
+  if (!hexdump_write(&ctx, data, len) || !finish(&ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h
new file mode 100644
index 0000000..36cc921
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BIO_INTERNAL_H
+#define OPENSSL_HEADER_BIO_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#if defined(OPENSSL_PNACL)
+// newlib uses u_short in socket.h without defining it.
+typedef unsigned short u_short;
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+typedef int socklen_t;
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BIO_ip_and_port_to_socket_and_addr creates a socket and fills in |*out_addr|
+// and |*out_addr_length| with the correct values for connecting to |hostname|
+// on |port_str|. It returns one on success or zero on error.
+int bio_ip_and_port_to_socket_and_addr(int *out_sock,
+                                       struct sockaddr_storage *out_addr,
+                                       socklen_t *out_addr_length,
+                                       const char *hostname,
+                                       const char *port_str);
+
+// BIO_socket_nbio sets whether |sock| is non-blocking. It returns one on
+// success and zero otherwise.
+int bio_socket_nbio(int sock, int on);
+
+// BIO_clear_socket_error clears the last system socket error.
+//
+// TODO(fork): remove all callers of this.
+void bio_clear_socket_error(void);
+
+// BIO_sock_error returns the last socket error on |sock|.
+int bio_sock_error(int sock);
+
+// BIO_fd_should_retry returns non-zero if |return_value| indicates an error
+// and |errno| indicates that it's non-fatal.
+int bio_fd_should_retry(int return_value);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BIO_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h.grpc_back
new file mode 100644
index 0000000..8ed27da
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/internal.h.grpc_back	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BIO_INTERNAL_H
+#define OPENSSL_HEADER_BIO_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#if defined(OPENSSL_PNACL)
+// newlib uses u_short in socket.h without defining it.
+typedef unsigned short u_short;
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+typedef int socklen_t;
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BIO_ip_and_port_to_socket_and_addr creates a socket and fills in |*out_addr|
+// and |*out_addr_length| with the correct values for connecting to |hostname|
+// on |port_str|. It returns one on success or zero on error.
+int bio_ip_and_port_to_socket_and_addr(int *out_sock,
+                                       struct sockaddr_storage *out_addr,
+                                       socklen_t *out_addr_length,
+                                       const char *hostname,
+                                       const char *port_str);
+
+// BIO_socket_nbio sets whether |sock| is non-blocking. It returns one on
+// success and zero otherwise.
+int bio_socket_nbio(int sock, int on);
+
+// BIO_clear_socket_error clears the last system socket error.
+//
+// TODO(fork): remove all callers of this.
+void bio_clear_socket_error(void);
+
+// BIO_sock_error returns the last socket error on |sock|.
+int bio_sock_error(int sock);
+
+// BIO_fd_should_retry returns non-zero if |return_value| indicates an error
+// and |errno| indicates that it's non-fatal.
+int bio_fd_should_retry(int return_value);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BIO_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c
new file mode 100644
index 0000000..aa19a31
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c	
@@ -0,0 +1,488 @@
+/* ====================================================================
+ * Copyright (c) 1998-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bio.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+struct bio_bio_st {
+  BIO *peer;  // NULL if buf == NULL.
+              // If peer != NULL, then peer->ptr is also a bio_bio_st,
+              // and its "peer" member points back to us.
+              // peer != NULL iff init != 0 in the BIO.
+
+  // This is for what we write (i.e. reading uses peer's struct):
+  int closed;     // valid iff peer != NULL
+  size_t len;     // valid iff buf != NULL; 0 if peer == NULL
+  size_t offset;  // valid iff buf != NULL; 0 if len == 0
+  size_t size;
+  uint8_t *buf;  // "size" elements (if != NULL)
+
+  size_t request;  // valid iff peer != NULL; 0 if len != 0,
+                   // otherwise set by peer to number of bytes
+                   // it (unsuccessfully) tried to read,
+                   // never more than buffer space (size-len) warrants.
+};
+
+static int bio_new(BIO *bio) {
+  struct bio_bio_st *b;
+
+  b = OPENSSL_malloc(sizeof *b);
+  if (b == NULL) {
+    return 0;
+  }
+  OPENSSL_memset(b, 0, sizeof(struct bio_bio_st));
+
+  b->size = 17 * 1024;  // enough for one TLS record (just a default)
+  bio->ptr = b;
+  return 1;
+}
+
+static void bio_destroy_pair(BIO *bio) {
+  struct bio_bio_st *b = bio->ptr;
+  BIO *peer_bio;
+  struct bio_bio_st *peer_b;
+
+  if (b == NULL) {
+    return;
+  }
+
+  peer_bio = b->peer;
+  if (peer_bio == NULL) {
+    return;
+  }
+
+  peer_b = peer_bio->ptr;
+
+  assert(peer_b != NULL);
+  assert(peer_b->peer == bio);
+
+  peer_b->peer = NULL;
+  peer_bio->init = 0;
+  assert(peer_b->buf != NULL);
+  peer_b->len = 0;
+  peer_b->offset = 0;
+
+  b->peer = NULL;
+  bio->init = 0;
+  assert(b->buf != NULL);
+  b->len = 0;
+  b->offset = 0;
+}
+
+static int bio_free(BIO *bio) {
+  struct bio_bio_st *b;
+
+  if (bio == NULL) {
+    return 0;
+  }
+  b = bio->ptr;
+
+  assert(b != NULL);
+
+  if (b->peer) {
+    bio_destroy_pair(bio);
+  }
+
+  OPENSSL_free(b->buf);
+  OPENSSL_free(b);
+
+  return 1;
+}
+
+static int bio_read(BIO *bio, char *buf, int size_) {
+  size_t size = size_;
+  size_t rest;
+  struct bio_bio_st *b, *peer_b;
+
+  BIO_clear_retry_flags(bio);
+
+  if (!bio->init) {
+    return 0;
+  }
+
+  b = bio->ptr;
+  assert(b != NULL);
+  assert(b->peer != NULL);
+  peer_b = b->peer->ptr;
+  assert(peer_b != NULL);
+  assert(peer_b->buf != NULL);
+
+  peer_b->request = 0;  // will be set in "retry_read" situation
+
+  if (buf == NULL || size == 0) {
+    return 0;
+  }
+
+  if (peer_b->len == 0) {
+    if (peer_b->closed) {
+      return 0;  // writer has closed, and no data is left
+    } else {
+      BIO_set_retry_read(bio);  // buffer is empty
+      if (size <= peer_b->size) {
+        peer_b->request = size;
+      } else {
+        // don't ask for more than the peer can
+        // deliver in one write
+        peer_b->request = peer_b->size;
+      }
+      return -1;
+    }
+  }
+
+  // we can read
+  if (peer_b->len < size) {
+    size = peer_b->len;
+  }
+
+  // now read "size" bytes
+  rest = size;
+
+  assert(rest > 0);
+  // one or two iterations
+  do {
+    size_t chunk;
+
+    assert(rest <= peer_b->len);
+    if (peer_b->offset + rest <= peer_b->size) {
+      chunk = rest;
+    } else {
+      // wrap around ring buffer
+      chunk = peer_b->size - peer_b->offset;
+    }
+    assert(peer_b->offset + chunk <= peer_b->size);
+
+    OPENSSL_memcpy(buf, peer_b->buf + peer_b->offset, chunk);
+
+    peer_b->len -= chunk;
+    if (peer_b->len) {
+      peer_b->offset += chunk;
+      assert(peer_b->offset <= peer_b->size);
+      if (peer_b->offset == peer_b->size) {
+        peer_b->offset = 0;
+      }
+      buf += chunk;
+    } else {
+      // buffer now empty, no need to advance "buf"
+      assert(chunk == rest);
+      peer_b->offset = 0;
+    }
+    rest -= chunk;
+  } while (rest);
+
+  return size;
+}
+
+static int bio_write(BIO *bio, const char *buf, int num_) {
+  size_t num = num_;
+  size_t rest;
+  struct bio_bio_st *b;
+
+  BIO_clear_retry_flags(bio);
+
+  if (!bio->init || buf == NULL || num == 0) {
+    return 0;
+  }
+
+  b = bio->ptr;
+  assert(b != NULL);
+  assert(b->peer != NULL);
+  assert(b->buf != NULL);
+
+  b->request = 0;
+  if (b->closed) {
+    // we already closed
+    OPENSSL_PUT_ERROR(BIO, BIO_R_BROKEN_PIPE);
+    return -1;
+  }
+
+  assert(b->len <= b->size);
+
+  if (b->len == b->size) {
+    BIO_set_retry_write(bio);  // buffer is full
+    return -1;
+  }
+
+  // we can write
+  if (num > b->size - b->len) {
+    num = b->size - b->len;
+  }
+
+  // now write "num" bytes
+  rest = num;
+
+  assert(rest > 0);
+  // one or two iterations
+  do {
+    size_t write_offset;
+    size_t chunk;
+
+    assert(b->len + rest <= b->size);
+
+    write_offset = b->offset + b->len;
+    if (write_offset >= b->size) {
+      write_offset -= b->size;
+    }
+    // b->buf[write_offset] is the first byte we can write to.
+
+    if (write_offset + rest <= b->size) {
+      chunk = rest;
+    } else {
+      // wrap around ring buffer
+      chunk = b->size - write_offset;
+    }
+
+    OPENSSL_memcpy(b->buf + write_offset, buf, chunk);
+
+    b->len += chunk;
+
+    assert(b->len <= b->size);
+
+    rest -= chunk;
+    buf += chunk;
+  } while (rest);
+
+  return num;
+}
+
+static int bio_make_pair(BIO *bio1, BIO *bio2, size_t writebuf1_len,
+                         size_t writebuf2_len) {
+  struct bio_bio_st *b1, *b2;
+
+  assert(bio1 != NULL);
+  assert(bio2 != NULL);
+
+  b1 = bio1->ptr;
+  b2 = bio2->ptr;
+
+  if (b1->peer != NULL || b2->peer != NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_IN_USE);
+    return 0;
+  }
+
+  if (b1->buf == NULL) {
+    if (writebuf1_len) {
+      b1->size = writebuf1_len;
+    }
+    b1->buf = OPENSSL_malloc(b1->size);
+    if (b1->buf == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    b1->len = 0;
+    b1->offset = 0;
+  }
+
+  if (b2->buf == NULL) {
+    if (writebuf2_len) {
+      b2->size = writebuf2_len;
+    }
+    b2->buf = OPENSSL_malloc(b2->size);
+    if (b2->buf == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    b2->len = 0;
+    b2->offset = 0;
+  }
+
+  b1->peer = bio2;
+  b1->closed = 0;
+  b1->request = 0;
+  b2->peer = bio1;
+  b2->closed = 0;
+  b2->request = 0;
+
+  bio1->init = 1;
+  bio2->init = 1;
+
+  return 1;
+}
+
+static long bio_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  long ret;
+  struct bio_bio_st *b = bio->ptr;
+
+  assert(b != NULL);
+
+  switch (cmd) {
+    // specific CTRL codes
+
+    case BIO_C_GET_WRITE_BUF_SIZE:
+      ret = (long)b->size;
+      break;
+
+    case BIO_C_GET_WRITE_GUARANTEE:
+      // How many bytes can the caller feed to the next write
+      // without having to keep any?
+      if (b->peer == NULL || b->closed) {
+        ret = 0;
+      } else {
+        ret = (long)b->size - b->len;
+      }
+      break;
+
+    case BIO_C_GET_READ_REQUEST:
+      // If the peer unsuccessfully tried to read, how many bytes
+      // were requested?  (As with BIO_CTRL_PENDING, that number
+      // can usually be treated as boolean.)
+      ret = (long)b->request;
+      break;
+
+    case BIO_C_RESET_READ_REQUEST:
+      // Reset request.  (Can be useful after read attempts
+      // at the other side that are meant to be non-blocking,
+      // e.g. when probing SSL_read to see if any data is
+      // available.)
+      b->request = 0;
+      ret = 1;
+      break;
+
+    case BIO_C_SHUTDOWN_WR:
+      // similar to shutdown(..., SHUT_WR)
+      b->closed = 1;
+      ret = 1;
+      break;
+
+    // standard CTRL codes follow
+
+    case BIO_CTRL_GET_CLOSE:
+      ret = bio->shutdown;
+      break;
+
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      ret = 1;
+      break;
+
+    case BIO_CTRL_PENDING:
+      if (b->peer != NULL) {
+        struct bio_bio_st *peer_b = b->peer->ptr;
+        ret = (long)peer_b->len;
+      } else {
+        ret = 0;
+      }
+      break;
+
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      if (b->buf != NULL) {
+        ret = (long)b->len;
+      }
+      break;
+
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+
+    case BIO_CTRL_EOF: {
+      BIO *other_bio = ptr;
+
+      if (other_bio) {
+        struct bio_bio_st *other_b = other_bio->ptr;
+        assert(other_b != NULL);
+        ret = other_b->len == 0 && other_b->closed;
+      } else {
+        ret = 1;
+      }
+    } break;
+
+    default:
+      ret = 0;
+  }
+  return ret;
+}
+
+
+static const BIO_METHOD methods_biop = {
+    BIO_TYPE_BIO,    "BIO pair", bio_write, bio_read, NULL /* puts */,
+    NULL /* gets */, bio_ctrl,   bio_new,   bio_free, NULL /* callback_ctrl */,
+};
+
+static const BIO_METHOD *bio_s_bio(void) { return &methods_biop; }
+
+int BIO_new_bio_pair(BIO** bio1_p, size_t writebuf1_len,
+                     BIO** bio2_p, size_t writebuf2_len) {
+  BIO *bio1 = BIO_new(bio_s_bio());
+  BIO *bio2 = BIO_new(bio_s_bio());
+  if (bio1 == NULL || bio2 == NULL ||
+      !bio_make_pair(bio1, bio2, writebuf1_len, writebuf2_len)) {
+    BIO_free(bio1);
+    BIO_free(bio2);
+    *bio1_p = NULL;
+    *bio2_p = NULL;
+    return 0;
+  }
+
+  *bio1_p = bio1;
+  *bio2_p = bio2;
+  return 1;
+}
+
+size_t BIO_ctrl_get_read_request(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_GET_READ_REQUEST, 0, NULL);
+}
+
+size_t BIO_ctrl_get_write_guarantee(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_GET_WRITE_GUARANTEE, 0, NULL);
+}
+
+int BIO_shutdown_wr(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_SHUTDOWN_WR, 0, NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c.grpc_back
new file mode 100644
index 0000000..03f60b7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/pair.c.grpc_back	
@@ -0,0 +1,488 @@
+/* ====================================================================
+ * Copyright (c) 1998-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bio.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+struct bio_bio_st {
+  BIO *peer;  // NULL if buf == NULL.
+              // If peer != NULL, then peer->ptr is also a bio_bio_st,
+              // and its "peer" member points back to us.
+              // peer != NULL iff init != 0 in the BIO.
+
+  // This is for what we write (i.e. reading uses peer's struct):
+  int closed;     // valid iff peer != NULL
+  size_t len;     // valid iff buf != NULL; 0 if peer == NULL
+  size_t offset;  // valid iff buf != NULL; 0 if len == 0
+  size_t size;
+  uint8_t *buf;  // "size" elements (if != NULL)
+
+  size_t request;  // valid iff peer != NULL; 0 if len != 0,
+                   // otherwise set by peer to number of bytes
+                   // it (unsuccessfully) tried to read,
+                   // never more than buffer space (size-len) warrants.
+};
+
+static int bio_new(BIO *bio) {
+  struct bio_bio_st *b;
+
+  b = OPENSSL_malloc(sizeof *b);
+  if (b == NULL) {
+    return 0;
+  }
+  OPENSSL_memset(b, 0, sizeof(struct bio_bio_st));
+
+  b->size = 17 * 1024;  // enough for one TLS record (just a default)
+  bio->ptr = b;
+  return 1;
+}
+
+static void bio_destroy_pair(BIO *bio) {
+  struct bio_bio_st *b = bio->ptr;
+  BIO *peer_bio;
+  struct bio_bio_st *peer_b;
+
+  if (b == NULL) {
+    return;
+  }
+
+  peer_bio = b->peer;
+  if (peer_bio == NULL) {
+    return;
+  }
+
+  peer_b = peer_bio->ptr;
+
+  assert(peer_b != NULL);
+  assert(peer_b->peer == bio);
+
+  peer_b->peer = NULL;
+  peer_bio->init = 0;
+  assert(peer_b->buf != NULL);
+  peer_b->len = 0;
+  peer_b->offset = 0;
+
+  b->peer = NULL;
+  bio->init = 0;
+  assert(b->buf != NULL);
+  b->len = 0;
+  b->offset = 0;
+}
+
+static int bio_free(BIO *bio) {
+  struct bio_bio_st *b;
+
+  if (bio == NULL) {
+    return 0;
+  }
+  b = bio->ptr;
+
+  assert(b != NULL);
+
+  if (b->peer) {
+    bio_destroy_pair(bio);
+  }
+
+  OPENSSL_free(b->buf);
+  OPENSSL_free(b);
+
+  return 1;
+}
+
+static int bio_read(BIO *bio, char *buf, int size_) {
+  size_t size = size_;
+  size_t rest;
+  struct bio_bio_st *b, *peer_b;
+
+  BIO_clear_retry_flags(bio);
+
+  if (!bio->init) {
+    return 0;
+  }
+
+  b = bio->ptr;
+  assert(b != NULL);
+  assert(b->peer != NULL);
+  peer_b = b->peer->ptr;
+  assert(peer_b != NULL);
+  assert(peer_b->buf != NULL);
+
+  peer_b->request = 0;  // will be set in "retry_read" situation
+
+  if (buf == NULL || size == 0) {
+    return 0;
+  }
+
+  if (peer_b->len == 0) {
+    if (peer_b->closed) {
+      return 0;  // writer has closed, and no data is left
+    } else {
+      BIO_set_retry_read(bio);  // buffer is empty
+      if (size <= peer_b->size) {
+        peer_b->request = size;
+      } else {
+        // don't ask for more than the peer can
+        // deliver in one write
+        peer_b->request = peer_b->size;
+      }
+      return -1;
+    }
+  }
+
+  // we can read
+  if (peer_b->len < size) {
+    size = peer_b->len;
+  }
+
+  // now read "size" bytes
+  rest = size;
+
+  assert(rest > 0);
+  // one or two iterations
+  do {
+    size_t chunk;
+
+    assert(rest <= peer_b->len);
+    if (peer_b->offset + rest <= peer_b->size) {
+      chunk = rest;
+    } else {
+      // wrap around ring buffer
+      chunk = peer_b->size - peer_b->offset;
+    }
+    assert(peer_b->offset + chunk <= peer_b->size);
+
+    OPENSSL_memcpy(buf, peer_b->buf + peer_b->offset, chunk);
+
+    peer_b->len -= chunk;
+    if (peer_b->len) {
+      peer_b->offset += chunk;
+      assert(peer_b->offset <= peer_b->size);
+      if (peer_b->offset == peer_b->size) {
+        peer_b->offset = 0;
+      }
+      buf += chunk;
+    } else {
+      // buffer now empty, no need to advance "buf"
+      assert(chunk == rest);
+      peer_b->offset = 0;
+    }
+    rest -= chunk;
+  } while (rest);
+
+  return size;
+}
+
+static int bio_write(BIO *bio, const char *buf, int num_) {
+  size_t num = num_;
+  size_t rest;
+  struct bio_bio_st *b;
+
+  BIO_clear_retry_flags(bio);
+
+  if (!bio->init || buf == NULL || num == 0) {
+    return 0;
+  }
+
+  b = bio->ptr;
+  assert(b != NULL);
+  assert(b->peer != NULL);
+  assert(b->buf != NULL);
+
+  b->request = 0;
+  if (b->closed) {
+    // we already closed
+    OPENSSL_PUT_ERROR(BIO, BIO_R_BROKEN_PIPE);
+    return -1;
+  }
+
+  assert(b->len <= b->size);
+
+  if (b->len == b->size) {
+    BIO_set_retry_write(bio);  // buffer is full
+    return -1;
+  }
+
+  // we can write
+  if (num > b->size - b->len) {
+    num = b->size - b->len;
+  }
+
+  // now write "num" bytes
+  rest = num;
+
+  assert(rest > 0);
+  // one or two iterations
+  do {
+    size_t write_offset;
+    size_t chunk;
+
+    assert(b->len + rest <= b->size);
+
+    write_offset = b->offset + b->len;
+    if (write_offset >= b->size) {
+      write_offset -= b->size;
+    }
+    // b->buf[write_offset] is the first byte we can write to.
+
+    if (write_offset + rest <= b->size) {
+      chunk = rest;
+    } else {
+      // wrap around ring buffer
+      chunk = b->size - write_offset;
+    }
+
+    OPENSSL_memcpy(b->buf + write_offset, buf, chunk);
+
+    b->len += chunk;
+
+    assert(b->len <= b->size);
+
+    rest -= chunk;
+    buf += chunk;
+  } while (rest);
+
+  return num;
+}
+
+static int bio_make_pair(BIO *bio1, BIO *bio2, size_t writebuf1_len,
+                         size_t writebuf2_len) {
+  struct bio_bio_st *b1, *b2;
+
+  assert(bio1 != NULL);
+  assert(bio2 != NULL);
+
+  b1 = bio1->ptr;
+  b2 = bio2->ptr;
+
+  if (b1->peer != NULL || b2->peer != NULL) {
+    OPENSSL_PUT_ERROR(BIO, BIO_R_IN_USE);
+    return 0;
+  }
+
+  if (b1->buf == NULL) {
+    if (writebuf1_len) {
+      b1->size = writebuf1_len;
+    }
+    b1->buf = OPENSSL_malloc(b1->size);
+    if (b1->buf == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    b1->len = 0;
+    b1->offset = 0;
+  }
+
+  if (b2->buf == NULL) {
+    if (writebuf2_len) {
+      b2->size = writebuf2_len;
+    }
+    b2->buf = OPENSSL_malloc(b2->size);
+    if (b2->buf == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    b2->len = 0;
+    b2->offset = 0;
+  }
+
+  b1->peer = bio2;
+  b1->closed = 0;
+  b1->request = 0;
+  b2->peer = bio1;
+  b2->closed = 0;
+  b2->request = 0;
+
+  bio1->init = 1;
+  bio2->init = 1;
+
+  return 1;
+}
+
+static long bio_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  long ret;
+  struct bio_bio_st *b = bio->ptr;
+
+  assert(b != NULL);
+
+  switch (cmd) {
+    // specific CTRL codes
+
+    case BIO_C_GET_WRITE_BUF_SIZE:
+      ret = (long)b->size;
+      break;
+
+    case BIO_C_GET_WRITE_GUARANTEE:
+      // How many bytes can the caller feed to the next write
+      // without having to keep any?
+      if (b->peer == NULL || b->closed) {
+        ret = 0;
+      } else {
+        ret = (long)b->size - b->len;
+      }
+      break;
+
+    case BIO_C_GET_READ_REQUEST:
+      // If the peer unsuccessfully tried to read, how many bytes
+      // were requested?  (As with BIO_CTRL_PENDING, that number
+      // can usually be treated as boolean.)
+      ret = (long)b->request;
+      break;
+
+    case BIO_C_RESET_READ_REQUEST:
+      // Reset request.  (Can be useful after read attempts
+      // at the other side that are meant to be non-blocking,
+      // e.g. when probing SSL_read to see if any data is
+      // available.)
+      b->request = 0;
+      ret = 1;
+      break;
+
+    case BIO_C_SHUTDOWN_WR:
+      // similar to shutdown(..., SHUT_WR)
+      b->closed = 1;
+      ret = 1;
+      break;
+
+    // standard CTRL codes follow
+
+    case BIO_CTRL_GET_CLOSE:
+      ret = bio->shutdown;
+      break;
+
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = (int)num;
+      ret = 1;
+      break;
+
+    case BIO_CTRL_PENDING:
+      if (b->peer != NULL) {
+        struct bio_bio_st *peer_b = b->peer->ptr;
+        ret = (long)peer_b->len;
+      } else {
+        ret = 0;
+      }
+      break;
+
+    case BIO_CTRL_WPENDING:
+      ret = 0;
+      if (b->buf != NULL) {
+        ret = (long)b->len;
+      }
+      break;
+
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+
+    case BIO_CTRL_EOF: {
+      BIO *other_bio = ptr;
+
+      if (other_bio) {
+        struct bio_bio_st *other_b = other_bio->ptr;
+        assert(other_b != NULL);
+        ret = other_b->len == 0 && other_b->closed;
+      } else {
+        ret = 1;
+      }
+    } break;
+
+    default:
+      ret = 0;
+  }
+  return ret;
+}
+
+
+static const BIO_METHOD methods_biop = {
+    BIO_TYPE_BIO,    "BIO pair", bio_write, bio_read, NULL /* puts */,
+    NULL /* gets */, bio_ctrl,   bio_new,   bio_free, NULL /* callback_ctrl */,
+};
+
+static const BIO_METHOD *bio_s_bio(void) { return &methods_biop; }
+
+int BIO_new_bio_pair(BIO** bio1_p, size_t writebuf1_len,
+                     BIO** bio2_p, size_t writebuf2_len) {
+  BIO *bio1 = BIO_new(bio_s_bio());
+  BIO *bio2 = BIO_new(bio_s_bio());
+  if (bio1 == NULL || bio2 == NULL ||
+      !bio_make_pair(bio1, bio2, writebuf1_len, writebuf2_len)) {
+    BIO_free(bio1);
+    BIO_free(bio2);
+    *bio1_p = NULL;
+    *bio2_p = NULL;
+    return 0;
+  }
+
+  *bio1_p = bio1;
+  *bio2_p = bio2;
+  return 1;
+}
+
+size_t BIO_ctrl_get_read_request(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_GET_READ_REQUEST, 0, NULL);
+}
+
+size_t BIO_ctrl_get_write_guarantee(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_GET_WRITE_GUARANTEE, 0, NULL);
+}
+
+int BIO_shutdown_wr(BIO *bio) {
+  return BIO_ctrl(bio, BIO_C_SHUTDOWN_WR, 0, NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c
new file mode 100644
index 0000000..d33814f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c	
@@ -0,0 +1,115 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+int BIO_printf(BIO *bio, const char *format, ...) {
+  va_list args;
+  char buf[256], *out, out_malloced = 0;
+  int out_len, ret;
+
+  va_start(args, format);
+  out_len = vsnprintf(buf, sizeof(buf), format, args);
+  va_end(args);
+
+#if defined(OPENSSL_WINDOWS)
+  // On Windows, vsnprintf returns -1 rather than the requested length on
+  // truncation
+  if (out_len < 0) {
+    va_start(args, format);
+    out_len = _vscprintf(format, args);
+    va_end(args);
+    assert(out_len >= (int)sizeof(buf));
+  }
+#endif
+
+  if (out_len < 0) {
+    return -1;
+  }
+
+  if ((size_t) out_len >= sizeof(buf)) {
+    const int requested_len = out_len;
+    // The output was truncated. Note that vsnprintf's return value
+    // does not include a trailing NUL, but the buffer must be sized
+    // for it.
+    out = OPENSSL_malloc(requested_len + 1);
+    out_malloced = 1;
+    if (out == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    va_start(args, format);
+    out_len = vsnprintf(out, requested_len + 1, format, args);
+    va_end(args);
+    assert(out_len == requested_len);
+  } else {
+    out = buf;
+  }
+
+  ret = BIO_write(bio, out, out_len);
+  if (out_malloced) {
+    OPENSSL_free(out);
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c.grpc_back
new file mode 100644
index 0000000..4f9d8a1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/printf.c.grpc_back	
@@ -0,0 +1,115 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+int BIO_printf(BIO *bio, const char *format, ...) {
+  va_list args;
+  char buf[256], *out, out_malloced = 0;
+  int out_len, ret;
+
+  va_start(args, format);
+  out_len = vsnprintf(buf, sizeof(buf), format, args);
+  va_end(args);
+
+#if defined(OPENSSL_WINDOWS)
+  // On Windows, vsnprintf returns -1 rather than the requested length on
+  // truncation
+  if (out_len < 0) {
+    va_start(args, format);
+    out_len = _vscprintf(format, args);
+    va_end(args);
+    assert(out_len >= (int)sizeof(buf));
+  }
+#endif
+
+  if (out_len < 0) {
+    return -1;
+  }
+
+  if ((size_t) out_len >= sizeof(buf)) {
+    const int requested_len = out_len;
+    // The output was truncated. Note that vsnprintf's return value
+    // does not include a trailing NUL, but the buffer must be sized
+    // for it.
+    out = OPENSSL_malloc(requested_len + 1);
+    out_malloced = 1;
+    if (out == NULL) {
+      OPENSSL_PUT_ERROR(BIO, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    va_start(args, format);
+    out_len = vsnprintf(out, requested_len + 1, format, args);
+    va_end(args);
+    assert(out_len == requested_len);
+  } else {
+    out = buf;
+  }
+
+  ret = BIO_write(bio, out, out_len);
+  if (out_malloced) {
+    OPENSSL_free(out);
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c
new file mode 100644
index 0000000..359a888
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c	
@@ -0,0 +1,206 @@
+/* crypto/bio/bss_sock.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <fcntl.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+OPENSSL_MSVC_PRAGMA(comment(lib, "Ws2_32.lib"))
+#endif
+
+#include "internal.h"
+
+
+#if !defined(OPENSSL_WINDOWS)
+static int closesocket(int sock) {
+  return close(sock);
+}
+#endif
+
+static int sock_new(BIO *bio) {
+  bio->init = 0;
+  bio->num = 0;
+  bio->ptr = NULL;
+  bio->flags = 0;
+  return 1;
+}
+
+static int sock_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    if (bio->init) {
+      closesocket(bio->num);
+    }
+    bio->init = 0;
+    bio->flags = 0;
+  }
+  return 1;
+}
+
+static int sock_read(BIO *b, char *out, int outl) {
+  int ret = 0;
+
+  if (out == NULL) {
+    return 0;
+  }
+
+  bio_clear_socket_error();
+#if defined(OPENSSL_WINDOWS)
+  ret = recv(b->num, out, outl, 0);
+#else
+  ret = read(b->num, out, outl);
+#endif
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(b);
+    }
+  }
+  return ret;
+}
+
+static int sock_write(BIO *b, const char *in, int inl) {
+  int ret;
+
+  bio_clear_socket_error();
+#if defined(OPENSSL_WINDOWS)
+  ret = send(b->num, in, inl, 0);
+#else
+  ret = write(b->num, in, inl);
+#endif
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(b);
+    }
+  }
+  return ret;
+}
+
+static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  int *ip;
+
+  switch (cmd) {
+    case BIO_C_SET_FD:
+      sock_free(b);
+      b->num = *((int *)ptr);
+      b->shutdown = (int)num;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FD:
+      if (b->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = b->num;
+        }
+        ret = b->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static const BIO_METHOD methods_sockp = {
+    BIO_TYPE_SOCKET, "socket",
+    sock_write,      sock_read,
+    NULL /* puts */, NULL /* gets, */,
+    sock_ctrl,       sock_new,
+    sock_free,       NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_socket(void) { return &methods_sockp; }
+
+BIO *BIO_new_socket(int fd, int close_flag) {
+  BIO *ret;
+
+  ret = BIO_new(BIO_s_socket());
+  if (ret == NULL) {
+    return NULL;
+  }
+  BIO_set_fd(ret, fd, close_flag);
+  return ret;
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c.grpc_back
new file mode 100644
index 0000000..081ce01
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket.c.grpc_back	
@@ -0,0 +1,206 @@
+/* crypto/bio/bss_sock.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bio.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <fcntl.h>
+#include <string.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+OPENSSL_MSVC_PRAGMA(comment(lib, "Ws2_32.lib"))
+#endif
+
+#include "internal.h"
+
+
+#if !defined(OPENSSL_WINDOWS)
+static int closesocket(int sock) {
+  return close(sock);
+}
+#endif
+
+static int sock_new(BIO *bio) {
+  bio->init = 0;
+  bio->num = 0;
+  bio->ptr = NULL;
+  bio->flags = 0;
+  return 1;
+}
+
+static int sock_free(BIO *bio) {
+  if (bio == NULL) {
+    return 0;
+  }
+
+  if (bio->shutdown) {
+    if (bio->init) {
+      closesocket(bio->num);
+    }
+    bio->init = 0;
+    bio->flags = 0;
+  }
+  return 1;
+}
+
+static int sock_read(BIO *b, char *out, int outl) {
+  int ret = 0;
+
+  if (out == NULL) {
+    return 0;
+  }
+
+  bio_clear_socket_error();
+#if defined(OPENSSL_WINDOWS)
+  ret = recv(b->num, out, outl, 0);
+#else
+  ret = read(b->num, out, outl);
+#endif
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_read(b);
+    }
+  }
+  return ret;
+}
+
+static int sock_write(BIO *b, const char *in, int inl) {
+  int ret;
+
+  bio_clear_socket_error();
+#if defined(OPENSSL_WINDOWS)
+  ret = send(b->num, in, inl, 0);
+#else
+  ret = write(b->num, in, inl);
+#endif
+  BIO_clear_retry_flags(b);
+  if (ret <= 0) {
+    if (bio_fd_should_retry(ret)) {
+      BIO_set_retry_write(b);
+    }
+  }
+  return ret;
+}
+
+static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) {
+  long ret = 1;
+  int *ip;
+
+  switch (cmd) {
+    case BIO_C_SET_FD:
+      sock_free(b);
+      b->num = *((int *)ptr);
+      b->shutdown = (int)num;
+      b->init = 1;
+      break;
+    case BIO_C_GET_FD:
+      if (b->init) {
+        ip = (int *)ptr;
+        if (ip != NULL) {
+          *ip = b->num;
+        }
+        ret = b->num;
+      } else {
+        ret = -1;
+      }
+      break;
+    case BIO_CTRL_GET_CLOSE:
+      ret = b->shutdown;
+      break;
+    case BIO_CTRL_SET_CLOSE:
+      b->shutdown = (int)num;
+      break;
+    case BIO_CTRL_FLUSH:
+      ret = 1;
+      break;
+    default:
+      ret = 0;
+      break;
+  }
+  return ret;
+}
+
+static const BIO_METHOD methods_sockp = {
+    BIO_TYPE_SOCKET, "socket",
+    sock_write,      sock_read,
+    NULL /* puts */, NULL /* gets, */,
+    sock_ctrl,       sock_new,
+    sock_free,       NULL /* callback_ctrl */,
+};
+
+const BIO_METHOD *BIO_s_socket(void) { return &methods_sockp; }
+
+BIO *BIO_new_socket(int fd, int close_flag) {
+  BIO *ret;
+
+  ret = BIO_new(BIO_s_socket());
+  if (ret == NULL) {
+    return NULL;
+  }
+  BIO_set_fd(ret, fd, close_flag);
+  return ret;
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c
new file mode 100644
index 0000000..1ea87f7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c	
@@ -0,0 +1,118 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200112L
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <netdb.h>
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+#include <ws2tcpip.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int bio_ip_and_port_to_socket_and_addr(int *out_sock,
+                                       struct sockaddr_storage *out_addr,
+                                       socklen_t *out_addr_length,
+                                       const char *hostname,
+                                       const char *port_str) {
+  struct addrinfo hint, *result, *cur;
+  int ret;
+
+  *out_sock = -1;
+
+  OPENSSL_memset(&hint, 0, sizeof(hint));
+  hint.ai_family = AF_UNSPEC;
+  hint.ai_socktype = SOCK_STREAM;
+
+  ret = getaddrinfo(hostname, port_str, &hint, &result);
+  if (ret != 0) {
+    OPENSSL_PUT_ERROR(SYS, 0);
+    ERR_add_error_data(1, gai_strerror(ret));
+    return 0;
+  }
+
+  ret = 0;
+
+  for (cur = result; cur; cur = cur->ai_next) {
+    if ((size_t) cur->ai_addrlen > sizeof(struct sockaddr_storage)) {
+      continue;
+    }
+    OPENSSL_memset(out_addr, 0, sizeof(struct sockaddr_storage));
+    OPENSSL_memcpy(out_addr, cur->ai_addr, cur->ai_addrlen);
+    *out_addr_length = cur->ai_addrlen;
+
+    *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol);
+    if (*out_sock < 0) {
+      OPENSSL_PUT_SYSTEM_ERROR();
+      goto out;
+    }
+
+    ret = 1;
+    break;
+  }
+
+out:
+  freeaddrinfo(result);
+  return ret;
+}
+
+int bio_socket_nbio(int sock, int on) {
+#if defined(OPENSSL_WINDOWS)
+  u_long arg = on;
+
+  return 0 == ioctlsocket(sock, FIONBIO, &arg);
+#else
+  int flags = fcntl(sock, F_GETFL, 0);
+  if (flags < 0) {
+    return 0;
+  }
+  if (!on) {
+    flags &= ~O_NONBLOCK;
+  } else {
+    flags |= O_NONBLOCK;
+  }
+  return fcntl(sock, F_SETFL, flags) == 0;
+#endif
+}
+
+void bio_clear_socket_error(void) {}
+
+int bio_sock_error(int sock) {
+  int error;
+  socklen_t error_size = sizeof(error);
+
+  if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) {
+    return 1;
+  }
+  return error;
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c.grpc_back
new file mode 100644
index 0000000..d4209d0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bio/socket_helper.c.grpc_back	
@@ -0,0 +1,118 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200112L
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <netdb.h>
+#include <unistd.h>
+#else
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+#include <ws2tcpip.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int bio_ip_and_port_to_socket_and_addr(int *out_sock,
+                                       struct sockaddr_storage *out_addr,
+                                       socklen_t *out_addr_length,
+                                       const char *hostname,
+                                       const char *port_str) {
+  struct addrinfo hint, *result, *cur;
+  int ret;
+
+  *out_sock = -1;
+
+  OPENSSL_memset(&hint, 0, sizeof(hint));
+  hint.ai_family = AF_UNSPEC;
+  hint.ai_socktype = SOCK_STREAM;
+
+  ret = getaddrinfo(hostname, port_str, &hint, &result);
+  if (ret != 0) {
+    OPENSSL_PUT_ERROR(SYS, 0);
+    ERR_add_error_data(1, gai_strerror(ret));
+    return 0;
+  }
+
+  ret = 0;
+
+  for (cur = result; cur; cur = cur->ai_next) {
+    if ((size_t) cur->ai_addrlen > sizeof(struct sockaddr_storage)) {
+      continue;
+    }
+    OPENSSL_memset(out_addr, 0, sizeof(struct sockaddr_storage));
+    OPENSSL_memcpy(out_addr, cur->ai_addr, cur->ai_addrlen);
+    *out_addr_length = cur->ai_addrlen;
+
+    *out_sock = socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol);
+    if (*out_sock < 0) {
+      OPENSSL_PUT_SYSTEM_ERROR();
+      goto out;
+    }
+
+    ret = 1;
+    break;
+  }
+
+out:
+  freeaddrinfo(result);
+  return ret;
+}
+
+int bio_socket_nbio(int sock, int on) {
+#if defined(OPENSSL_WINDOWS)
+  u_long arg = on;
+
+  return 0 == ioctlsocket(sock, FIONBIO, &arg);
+#else
+  int flags = fcntl(sock, F_GETFL, 0);
+  if (flags < 0) {
+    return 0;
+  }
+  if (!on) {
+    flags &= ~O_NONBLOCK;
+  } else {
+    flags |= O_NONBLOCK;
+  }
+  return fcntl(sock, F_SETFL, flags) == 0;
+#endif
+}
+
+void bio_clear_socket_error(void) {}
+
+int bio_sock_error(int sock) {
+  int error;
+  socklen_t error_size = sizeof(error);
+
+  if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char *)&error, &error_size) < 0) {
+    return 1;
+  }
+  return error;
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c
new file mode 100644
index 0000000..ce08c53
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c	
@@ -0,0 +1,64 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+
+
+int BN_parse_asn1_unsigned(CBS *cbs, BIGNUM *ret) {
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_INTEGER) ||
+      CBS_len(&child) == 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return 0;
+  }
+
+  if (CBS_data(&child)[0] & 0x80) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  // INTEGERs must be minimal.
+  if (CBS_data(&child)[0] == 0x00 &&
+      CBS_len(&child) > 1 &&
+      !(CBS_data(&child)[1] & 0x80)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return 0;
+  }
+
+  return BN_bin2bn(CBS_data(&child), CBS_len(&child), ret) != NULL;
+}
+
+int BN_marshal_asn1(CBB *cbb, const BIGNUM *bn) {
+  // Negative numbers are unsupported.
+  if (BN_is_negative(bn)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER) ||
+      // The number must be padded with a leading zero if the high bit would
+      // otherwise be set or if |bn| is zero.
+      (BN_num_bits(bn) % 8 == 0 && !CBB_add_u8(&child, 0x00)) ||
+      !BN_bn2cbb_padded(&child, BN_num_bytes(bn), bn) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c.grpc_back
new file mode 100644
index 0000000..0d96573
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/bn_asn1.c.grpc_back	
@@ -0,0 +1,64 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bn.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+
+
+int BN_parse_asn1_unsigned(CBS *cbs, BIGNUM *ret) {
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_INTEGER) ||
+      CBS_len(&child) == 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return 0;
+  }
+
+  if (CBS_data(&child)[0] & 0x80) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  // INTEGERs must be minimal.
+  if (CBS_data(&child)[0] == 0x00 &&
+      CBS_len(&child) > 1 &&
+      !(CBS_data(&child)[1] & 0x80)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return 0;
+  }
+
+  return BN_bin2bn(CBS_data(&child), CBS_len(&child), ret) != NULL;
+}
+
+int BN_marshal_asn1(CBB *cbb, const BIGNUM *bn) {
+  // Negative numbers are unsupported.
+  if (BN_is_negative(bn)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER) ||
+      // The number must be padded with a leading zero if the high bit would
+      // otherwise be set or if |bn| is zero.
+      (BN_num_bits(bn) % 8 == 0 && !CBB_add_u8(&child, 0x00)) ||
+      !BN_bn2cbb_padded(&child, BN_num_bytes(bn), bn) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c
new file mode 100644
index 0000000..b1c285b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c	
@@ -0,0 +1,470 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../fipsmodule/bn/internal.h"
+
+
+int BN_bn2cbb_padded(CBB *out, size_t len, const BIGNUM *in) {
+  uint8_t *ptr;
+  return CBB_add_space(out, &ptr, len) && BN_bn2bin_padded(ptr, len, in);
+}
+
+static const char hextable[] = "0123456789abcdef";
+
+char *BN_bn2hex(const BIGNUM *bn) {
+  int width = bn_minimal_width(bn);
+  char *buf = OPENSSL_malloc(1 /* leading '-' */ + 1 /* zero is non-empty */ +
+                             width * BN_BYTES * 2 + 1 /* trailing NUL */);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  char *p = buf;
+  if (bn->neg) {
+    *(p++) = '-';
+  }
+
+  if (BN_is_zero(bn)) {
+    *(p++) = '0';
+  }
+
+  int z = 0;
+  for (int i = width - 1; i >= 0; i--) {
+    for (int j = BN_BITS2 - 8; j >= 0; j -= 8) {
+      // strip leading zeros
+      int v = ((int)(bn->d[i] >> (long)j)) & 0xff;
+      if (z || v != 0) {
+        *(p++) = hextable[v >> 4];
+        *(p++) = hextable[v & 0x0f];
+        z = 1;
+      }
+    }
+  }
+  *p = '\0';
+
+  return buf;
+}
+
+// decode_hex decodes |in_len| bytes of hex data from |in| and updates |bn|.
+static int decode_hex(BIGNUM *bn, const char *in, int in_len) {
+  if (in_len > INT_MAX/4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  // |in_len| is the number of hex digits.
+  if (!bn_expand(bn, in_len * 4)) {
+    return 0;
+  }
+
+  int i = 0;
+  while (in_len > 0) {
+    // Decode one |BN_ULONG| at a time.
+    int todo = BN_BYTES * 2;
+    if (todo > in_len) {
+      todo = in_len;
+    }
+
+    BN_ULONG word = 0;
+    int j;
+    for (j = todo; j > 0; j--) {
+      char c = in[in_len - j];
+
+      BN_ULONG hex;
+      if (c >= '0' && c <= '9') {
+        hex = c - '0';
+      } else if (c >= 'a' && c <= 'f') {
+        hex = c - 'a' + 10;
+      } else if (c >= 'A' && c <= 'F') {
+        hex = c - 'A' + 10;
+      } else {
+        hex = 0;
+        // This shouldn't happen. The caller checks |isxdigit|.
+        assert(0);
+      }
+      word = (word << 4) | hex;
+    }
+
+    bn->d[i++] = word;
+    in_len -= todo;
+  }
+  assert(i <= bn->dmax);
+  bn->width = i;
+  return 1;
+}
+
+// decode_dec decodes |in_len| bytes of decimal data from |in| and updates |bn|.
+static int decode_dec(BIGNUM *bn, const char *in, int in_len) {
+  int i, j;
+  BN_ULONG l = 0;
+
+  // Decode |BN_DEC_NUM| digits at a time.
+  j = BN_DEC_NUM - (in_len % BN_DEC_NUM);
+  if (j == BN_DEC_NUM) {
+    j = 0;
+  }
+  l = 0;
+  for (i = 0; i < in_len; i++) {
+    l *= 10;
+    l += in[i] - '0';
+    if (++j == BN_DEC_NUM) {
+      if (!BN_mul_word(bn, BN_DEC_CONV) ||
+          !BN_add_word(bn, l)) {
+        return 0;
+      }
+      l = 0;
+      j = 0;
+    }
+  }
+  return 1;
+}
+
+typedef int (*decode_func) (BIGNUM *bn, const char *in, int in_len);
+typedef int (*char_test_func) (int c);
+
+static int bn_x2bn(BIGNUM **outp, const char *in, decode_func decode, char_test_func want_char) {
+  BIGNUM *ret = NULL;
+  int neg = 0, i;
+  int num;
+
+  if (in == NULL || *in == 0) {
+    return 0;
+  }
+
+  if (*in == '-') {
+    neg = 1;
+    in++;
+  }
+
+  for (i = 0; want_char((unsigned char)in[i]) && i + neg < INT_MAX; i++) {}
+
+  num = i + neg;
+  if (outp == NULL) {
+    return num;
+  }
+
+  // in is the start of the hex digits, and it is 'i' long
+  if (*outp == NULL) {
+    ret = BN_new();
+    if (ret == NULL) {
+      return 0;
+    }
+  } else {
+    ret = *outp;
+    BN_zero(ret);
+  }
+
+  if (!decode(ret, in, i)) {
+    goto err;
+  }
+
+  bn_set_minimal_width(ret);
+  if (!BN_is_zero(ret)) {
+    ret->neg = neg;
+  }
+
+  *outp = ret;
+  return num;
+
+err:
+  if (*outp == NULL) {
+    BN_free(ret);
+  }
+
+  return 0;
+}
+
+int BN_hex2bn(BIGNUM **outp, const char *in) {
+  return bn_x2bn(outp, in, decode_hex, isxdigit);
+}
+
+char *BN_bn2dec(const BIGNUM *a) {
+  // It is easier to print strings little-endian, so we assemble it in reverse
+  // and fix at the end.
+  BIGNUM *copy = NULL;
+  CBB cbb;
+  if (!CBB_init(&cbb, 16) ||
+      !CBB_add_u8(&cbb, 0 /* trailing NUL */)) {
+    goto cbb_err;
+  }
+
+  if (BN_is_zero(a)) {
+    if (!CBB_add_u8(&cbb, '0')) {
+      goto cbb_err;
+    }
+  } else {
+    copy = BN_dup(a);
+    if (copy == NULL) {
+      goto err;
+    }
+
+    while (!BN_is_zero(copy)) {
+      BN_ULONG word = BN_div_word(copy, BN_DEC_CONV);
+      if (word == (BN_ULONG)-1) {
+        goto err;
+      }
+
+      const int add_leading_zeros = !BN_is_zero(copy);
+      for (int i = 0; i < BN_DEC_NUM && (add_leading_zeros || word != 0); i++) {
+        if (!CBB_add_u8(&cbb, '0' + word % 10)) {
+          goto cbb_err;
+        }
+        word /= 10;
+      }
+      assert(word == 0);
+    }
+  }
+
+  if (BN_is_negative(a) &&
+      !CBB_add_u8(&cbb, '-')) {
+    goto cbb_err;
+  }
+
+  uint8_t *data;
+  size_t len;
+  if (!CBB_finish(&cbb, &data, &len)) {
+    goto cbb_err;
+  }
+
+  // Reverse the buffer.
+  for (size_t i = 0; i < len/2; i++) {
+    uint8_t tmp = data[i];
+    data[i] = data[len - 1 - i];
+    data[len - 1 - i] = tmp;
+  }
+
+  BN_free(copy);
+  return (char *)data;
+
+cbb_err:
+  OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+err:
+  BN_free(copy);
+  CBB_cleanup(&cbb);
+  return NULL;
+}
+
+int BN_dec2bn(BIGNUM **outp, const char *in) {
+  return bn_x2bn(outp, in, decode_dec, isdigit);
+}
+
+int BN_asc2bn(BIGNUM **outp, const char *in) {
+  const char *const orig_in = in;
+  if (*in == '-') {
+    in++;
+  }
+
+  if (in[0] == '0' && (in[1] == 'X' || in[1] == 'x')) {
+    if (!BN_hex2bn(outp, in+2)) {
+      return 0;
+    }
+  } else {
+    if (!BN_dec2bn(outp, in)) {
+      return 0;
+    }
+  }
+
+  if (*orig_in == '-' && !BN_is_zero(*outp)) {
+    (*outp)->neg = 1;
+  }
+
+  return 1;
+}
+
+int BN_print(BIO *bp, const BIGNUM *a) {
+  int i, j, v, z = 0;
+  int ret = 0;
+
+  if (a->neg && BIO_write(bp, "-", 1) != 1) {
+    goto end;
+  }
+
+  if (BN_is_zero(a) && BIO_write(bp, "0", 1) != 1) {
+    goto end;
+  }
+
+  for (i = bn_minimal_width(a) - 1; i >= 0; i--) {
+    for (j = BN_BITS2 - 4; j >= 0; j -= 4) {
+      // strip leading zeros
+      v = ((int)(a->d[i] >> (long)j)) & 0x0f;
+      if (z || v != 0) {
+        if (BIO_write(bp, &hextable[v], 1) != 1) {
+          goto end;
+        }
+        z = 1;
+      }
+    }
+  }
+  ret = 1;
+
+end:
+  return ret;
+}
+
+int BN_print_fp(FILE *fp, const BIGNUM *a) {
+  BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+  if (b == NULL) {
+    return 0;
+  }
+
+  int ret = BN_print(b, a);
+  BIO_free(b);
+  return ret;
+}
+
+
+size_t BN_bn2mpi(const BIGNUM *in, uint8_t *out) {
+  const size_t bits = BN_num_bits(in);
+  const size_t bytes = (bits + 7) / 8;
+  // If the number of bits is a multiple of 8, i.e. if the MSB is set,
+  // prefix with a zero byte.
+  int extend = 0;
+  if (bytes != 0 && (bits & 0x07) == 0) {
+    extend = 1;
+  }
+
+  const size_t len = bytes + extend;
+  if (len < bytes ||
+      4 + len < len ||
+      (len & 0xffffffff) != len) {
+    // If we cannot represent the number then we emit zero as the interface
+    // doesn't allow an error to be signalled.
+    if (out) {
+      OPENSSL_memset(out, 0, 4);
+    }
+    return 4;
+  }
+
+  if (out == NULL) {
+    return 4 + len;
+  }
+
+  out[0] = len >> 24;
+  out[1] = len >> 16;
+  out[2] = len >> 8;
+  out[3] = len;
+  if (extend) {
+    out[4] = 0;
+  }
+  BN_bn2bin(in, out + 4 + extend);
+  if (in->neg && len > 0) {
+    out[4] |= 0x80;
+  }
+  return len + 4;
+}
+
+BIGNUM *BN_mpi2bn(const uint8_t *in, size_t len, BIGNUM *out) {
+  if (len < 4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return NULL;
+  }
+  const size_t in_len = ((size_t)in[0] << 24) |
+                        ((size_t)in[1] << 16) |
+                        ((size_t)in[2] << 8) |
+                        ((size_t)in[3]);
+  if (in_len != len - 4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return NULL;
+  }
+
+  int out_is_alloced = 0;
+  if (out == NULL) {
+    out = BN_new();
+    if (out == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      return NULL;
+    }
+    out_is_alloced = 1;
+  }
+
+  if (in_len == 0) {
+    BN_zero(out);
+    return out;
+  }
+
+  in += 4;
+  if (BN_bin2bn(in, in_len, out) == NULL) {
+    if (out_is_alloced) {
+      BN_free(out);
+    }
+    return NULL;
+  }
+  out->neg = ((*in) & 0x80) != 0;
+  if (out->neg) {
+    BN_clear_bit(out, BN_num_bits(out) - 1);
+  }
+  return out;
+}
+
+int BN_bn2binpad(const BIGNUM *in, uint8_t *out, int len) {
+  if (len < 0 ||
+      !BN_bn2bin_padded(out, (size_t)len, in)) {
+    return -1;
+  }
+  return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c.grpc_back
new file mode 100644
index 0000000..6e930fc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bn_extra/convert.c.grpc_back	
@@ -0,0 +1,470 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <openssl/bio.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../fipsmodule/bn/internal.h"
+
+
+int BN_bn2cbb_padded(CBB *out, size_t len, const BIGNUM *in) {
+  uint8_t *ptr;
+  return CBB_add_space(out, &ptr, len) && BN_bn2bin_padded(ptr, len, in);
+}
+
+static const char hextable[] = "0123456789abcdef";
+
+char *BN_bn2hex(const BIGNUM *bn) {
+  int width = bn_minimal_width(bn);
+  char *buf = OPENSSL_malloc(1 /* leading '-' */ + 1 /* zero is non-empty */ +
+                             width * BN_BYTES * 2 + 1 /* trailing NUL */);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  char *p = buf;
+  if (bn->neg) {
+    *(p++) = '-';
+  }
+
+  if (BN_is_zero(bn)) {
+    *(p++) = '0';
+  }
+
+  int z = 0;
+  for (int i = width - 1; i >= 0; i--) {
+    for (int j = BN_BITS2 - 8; j >= 0; j -= 8) {
+      // strip leading zeros
+      int v = ((int)(bn->d[i] >> (long)j)) & 0xff;
+      if (z || v != 0) {
+        *(p++) = hextable[v >> 4];
+        *(p++) = hextable[v & 0x0f];
+        z = 1;
+      }
+    }
+  }
+  *p = '\0';
+
+  return buf;
+}
+
+// decode_hex decodes |in_len| bytes of hex data from |in| and updates |bn|.
+static int decode_hex(BIGNUM *bn, const char *in, int in_len) {
+  if (in_len > INT_MAX/4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  // |in_len| is the number of hex digits.
+  if (!bn_expand(bn, in_len * 4)) {
+    return 0;
+  }
+
+  int i = 0;
+  while (in_len > 0) {
+    // Decode one |BN_ULONG| at a time.
+    int todo = BN_BYTES * 2;
+    if (todo > in_len) {
+      todo = in_len;
+    }
+
+    BN_ULONG word = 0;
+    int j;
+    for (j = todo; j > 0; j--) {
+      char c = in[in_len - j];
+
+      BN_ULONG hex;
+      if (c >= '0' && c <= '9') {
+        hex = c - '0';
+      } else if (c >= 'a' && c <= 'f') {
+        hex = c - 'a' + 10;
+      } else if (c >= 'A' && c <= 'F') {
+        hex = c - 'A' + 10;
+      } else {
+        hex = 0;
+        // This shouldn't happen. The caller checks |isxdigit|.
+        assert(0);
+      }
+      word = (word << 4) | hex;
+    }
+
+    bn->d[i++] = word;
+    in_len -= todo;
+  }
+  assert(i <= bn->dmax);
+  bn->width = i;
+  return 1;
+}
+
+// decode_dec decodes |in_len| bytes of decimal data from |in| and updates |bn|.
+static int decode_dec(BIGNUM *bn, const char *in, int in_len) {
+  int i, j;
+  BN_ULONG l = 0;
+
+  // Decode |BN_DEC_NUM| digits at a time.
+  j = BN_DEC_NUM - (in_len % BN_DEC_NUM);
+  if (j == BN_DEC_NUM) {
+    j = 0;
+  }
+  l = 0;
+  for (i = 0; i < in_len; i++) {
+    l *= 10;
+    l += in[i] - '0';
+    if (++j == BN_DEC_NUM) {
+      if (!BN_mul_word(bn, BN_DEC_CONV) ||
+          !BN_add_word(bn, l)) {
+        return 0;
+      }
+      l = 0;
+      j = 0;
+    }
+  }
+  return 1;
+}
+
+typedef int (*decode_func) (BIGNUM *bn, const char *in, int in_len);
+typedef int (*char_test_func) (int c);
+
+static int bn_x2bn(BIGNUM **outp, const char *in, decode_func decode, char_test_func want_char) {
+  BIGNUM *ret = NULL;
+  int neg = 0, i;
+  int num;
+
+  if (in == NULL || *in == 0) {
+    return 0;
+  }
+
+  if (*in == '-') {
+    neg = 1;
+    in++;
+  }
+
+  for (i = 0; want_char((unsigned char)in[i]) && i + neg < INT_MAX; i++) {}
+
+  num = i + neg;
+  if (outp == NULL) {
+    return num;
+  }
+
+  // in is the start of the hex digits, and it is 'i' long
+  if (*outp == NULL) {
+    ret = BN_new();
+    if (ret == NULL) {
+      return 0;
+    }
+  } else {
+    ret = *outp;
+    BN_zero(ret);
+  }
+
+  if (!decode(ret, in, i)) {
+    goto err;
+  }
+
+  bn_set_minimal_width(ret);
+  if (!BN_is_zero(ret)) {
+    ret->neg = neg;
+  }
+
+  *outp = ret;
+  return num;
+
+err:
+  if (*outp == NULL) {
+    BN_free(ret);
+  }
+
+  return 0;
+}
+
+int BN_hex2bn(BIGNUM **outp, const char *in) {
+  return bn_x2bn(outp, in, decode_hex, isxdigit);
+}
+
+char *BN_bn2dec(const BIGNUM *a) {
+  // It is easier to print strings little-endian, so we assemble it in reverse
+  // and fix at the end.
+  BIGNUM *copy = NULL;
+  CBB cbb;
+  if (!CBB_init(&cbb, 16) ||
+      !CBB_add_u8(&cbb, 0 /* trailing NUL */)) {
+    goto cbb_err;
+  }
+
+  if (BN_is_zero(a)) {
+    if (!CBB_add_u8(&cbb, '0')) {
+      goto cbb_err;
+    }
+  } else {
+    copy = BN_dup(a);
+    if (copy == NULL) {
+      goto err;
+    }
+
+    while (!BN_is_zero(copy)) {
+      BN_ULONG word = BN_div_word(copy, BN_DEC_CONV);
+      if (word == (BN_ULONG)-1) {
+        goto err;
+      }
+
+      const int add_leading_zeros = !BN_is_zero(copy);
+      for (int i = 0; i < BN_DEC_NUM && (add_leading_zeros || word != 0); i++) {
+        if (!CBB_add_u8(&cbb, '0' + word % 10)) {
+          goto cbb_err;
+        }
+        word /= 10;
+      }
+      assert(word == 0);
+    }
+  }
+
+  if (BN_is_negative(a) &&
+      !CBB_add_u8(&cbb, '-')) {
+    goto cbb_err;
+  }
+
+  uint8_t *data;
+  size_t len;
+  if (!CBB_finish(&cbb, &data, &len)) {
+    goto cbb_err;
+  }
+
+  // Reverse the buffer.
+  for (size_t i = 0; i < len/2; i++) {
+    uint8_t tmp = data[i];
+    data[i] = data[len - 1 - i];
+    data[len - 1 - i] = tmp;
+  }
+
+  BN_free(copy);
+  return (char *)data;
+
+cbb_err:
+  OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+err:
+  BN_free(copy);
+  CBB_cleanup(&cbb);
+  return NULL;
+}
+
+int BN_dec2bn(BIGNUM **outp, const char *in) {
+  return bn_x2bn(outp, in, decode_dec, isdigit);
+}
+
+int BN_asc2bn(BIGNUM **outp, const char *in) {
+  const char *const orig_in = in;
+  if (*in == '-') {
+    in++;
+  }
+
+  if (in[0] == '0' && (in[1] == 'X' || in[1] == 'x')) {
+    if (!BN_hex2bn(outp, in+2)) {
+      return 0;
+    }
+  } else {
+    if (!BN_dec2bn(outp, in)) {
+      return 0;
+    }
+  }
+
+  if (*orig_in == '-' && !BN_is_zero(*outp)) {
+    (*outp)->neg = 1;
+  }
+
+  return 1;
+}
+
+int BN_print(BIO *bp, const BIGNUM *a) {
+  int i, j, v, z = 0;
+  int ret = 0;
+
+  if (a->neg && BIO_write(bp, "-", 1) != 1) {
+    goto end;
+  }
+
+  if (BN_is_zero(a) && BIO_write(bp, "0", 1) != 1) {
+    goto end;
+  }
+
+  for (i = bn_minimal_width(a) - 1; i >= 0; i--) {
+    for (j = BN_BITS2 - 4; j >= 0; j -= 4) {
+      // strip leading zeros
+      v = ((int)(a->d[i] >> (long)j)) & 0x0f;
+      if (z || v != 0) {
+        if (BIO_write(bp, &hextable[v], 1) != 1) {
+          goto end;
+        }
+        z = 1;
+      }
+    }
+  }
+  ret = 1;
+
+end:
+  return ret;
+}
+
+int BN_print_fp(FILE *fp, const BIGNUM *a) {
+  BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+  if (b == NULL) {
+    return 0;
+  }
+
+  int ret = BN_print(b, a);
+  BIO_free(b);
+  return ret;
+}
+
+
+size_t BN_bn2mpi(const BIGNUM *in, uint8_t *out) {
+  const size_t bits = BN_num_bits(in);
+  const size_t bytes = (bits + 7) / 8;
+  // If the number of bits is a multiple of 8, i.e. if the MSB is set,
+  // prefix with a zero byte.
+  int extend = 0;
+  if (bytes != 0 && (bits & 0x07) == 0) {
+    extend = 1;
+  }
+
+  const size_t len = bytes + extend;
+  if (len < bytes ||
+      4 + len < len ||
+      (len & 0xffffffff) != len) {
+    // If we cannot represent the number then we emit zero as the interface
+    // doesn't allow an error to be signalled.
+    if (out) {
+      OPENSSL_memset(out, 0, 4);
+    }
+    return 4;
+  }
+
+  if (out == NULL) {
+    return 4 + len;
+  }
+
+  out[0] = len >> 24;
+  out[1] = len >> 16;
+  out[2] = len >> 8;
+  out[3] = len;
+  if (extend) {
+    out[4] = 0;
+  }
+  BN_bn2bin(in, out + 4 + extend);
+  if (in->neg && len > 0) {
+    out[4] |= 0x80;
+  }
+  return len + 4;
+}
+
+BIGNUM *BN_mpi2bn(const uint8_t *in, size_t len, BIGNUM *out) {
+  if (len < 4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return NULL;
+  }
+  const size_t in_len = ((size_t)in[0] << 24) |
+                        ((size_t)in[1] << 16) |
+                        ((size_t)in[2] << 8) |
+                        ((size_t)in[3]);
+  if (in_len != len - 4) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BAD_ENCODING);
+    return NULL;
+  }
+
+  int out_is_alloced = 0;
+  if (out == NULL) {
+    out = BN_new();
+    if (out == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      return NULL;
+    }
+    out_is_alloced = 1;
+  }
+
+  if (in_len == 0) {
+    BN_zero(out);
+    return out;
+  }
+
+  in += 4;
+  if (BN_bin2bn(in, in_len, out) == NULL) {
+    if (out_is_alloced) {
+      BN_free(out);
+    }
+    return NULL;
+  }
+  out->neg = ((*in) & 0x80) != 0;
+  if (out->neg) {
+    BN_clear_bit(out, BN_num_bits(out) - 1);
+  }
+  return out;
+}
+
+int BN_bn2binpad(const BIGNUM *in, uint8_t *out, int len) {
+  if (len < 0 ||
+      !BN_bn2bin_padded(out, (size_t)len, in)) {
+    return -1;
+  }
+  return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c
new file mode 100644
index 0000000..bcf591c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c	
@@ -0,0 +1,172 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/buf.h>
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/err.h>
+
+#include "../internal.h"
+
+
+BUF_MEM *BUF_MEM_new(void) {
+  BUF_MEM *ret;
+
+  ret = OPENSSL_malloc(sizeof(BUF_MEM));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BUF_MEM));
+  return ret;
+}
+
+void BUF_MEM_free(BUF_MEM *buf) {
+  if (buf == NULL) {
+    return;
+  }
+
+  OPENSSL_free(buf->data);
+  OPENSSL_free(buf);
+}
+
+int BUF_MEM_reserve(BUF_MEM *buf, size_t cap) {
+  if (buf->max >= cap) {
+    return 1;
+  }
+
+  size_t n = cap + 3;
+  if (n < cap) {
+    // overflow
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  n = n / 3;
+  size_t alloc_size = n * 4;
+  if (alloc_size / 4 != n) {
+    // overflow
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  char *new_buf = OPENSSL_realloc(buf->data, alloc_size);
+  if (new_buf == NULL) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  buf->data = new_buf;
+  buf->max = alloc_size;
+  return 1;
+}
+
+size_t BUF_MEM_grow(BUF_MEM *buf, size_t len) {
+  if (!BUF_MEM_reserve(buf, len)) {
+    return 0;
+  }
+  if (buf->length < len) {
+    OPENSSL_memset(&buf->data[buf->length], 0, len - buf->length);
+  }
+  buf->length = len;
+  return len;
+}
+
+size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len) {
+  return BUF_MEM_grow(buf, len);
+}
+
+int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len) {
+  // Work around a C language bug. See https://crbug.com/1019588.
+  if (len == 0) {
+    return 1;
+  }
+  size_t new_len = buf->length + len;
+  if (new_len < len) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_OVERFLOW);
+    return 0;
+  }
+  if (!BUF_MEM_reserve(buf, new_len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(buf->data + buf->length, in, len);
+  buf->length = new_len;
+  return 1;
+}
+
+char *BUF_strdup(const char *str) { return OPENSSL_strdup(str); }
+
+size_t BUF_strnlen(const char *str, size_t max_len) {
+  return OPENSSL_strnlen(str, max_len);
+}
+
+char *BUF_strndup(const char *str, size_t size) {
+  return OPENSSL_strndup(str, size);
+}
+
+size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size) {
+  return OPENSSL_strlcpy(dst, src, dst_size);
+}
+
+size_t BUF_strlcat(char *dst, const char *src, size_t dst_size) {
+  return OPENSSL_strlcat(dst, src, dst_size);
+}
+
+void *BUF_memdup(const void *data, size_t size) {
+  return OPENSSL_memdup(data, size);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c.grpc_back
new file mode 100644
index 0000000..bd97dd3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/buf/buf.c.grpc_back	
@@ -0,0 +1,172 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/buf.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/err.h>
+
+#include "../internal.h"
+
+
+BUF_MEM *BUF_MEM_new(void) {
+  BUF_MEM *ret;
+
+  ret = OPENSSL_malloc(sizeof(BUF_MEM));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BUF_MEM));
+  return ret;
+}
+
+void BUF_MEM_free(BUF_MEM *buf) {
+  if (buf == NULL) {
+    return;
+  }
+
+  OPENSSL_free(buf->data);
+  OPENSSL_free(buf);
+}
+
+int BUF_MEM_reserve(BUF_MEM *buf, size_t cap) {
+  if (buf->max >= cap) {
+    return 1;
+  }
+
+  size_t n = cap + 3;
+  if (n < cap) {
+    // overflow
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  n = n / 3;
+  size_t alloc_size = n * 4;
+  if (alloc_size / 4 != n) {
+    // overflow
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  char *new_buf = OPENSSL_realloc(buf->data, alloc_size);
+  if (new_buf == NULL) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  buf->data = new_buf;
+  buf->max = alloc_size;
+  return 1;
+}
+
+size_t BUF_MEM_grow(BUF_MEM *buf, size_t len) {
+  if (!BUF_MEM_reserve(buf, len)) {
+    return 0;
+  }
+  if (buf->length < len) {
+    OPENSSL_memset(&buf->data[buf->length], 0, len - buf->length);
+  }
+  buf->length = len;
+  return len;
+}
+
+size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len) {
+  return BUF_MEM_grow(buf, len);
+}
+
+int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len) {
+  // Work around a C language bug. See https://crbug.com/1019588.
+  if (len == 0) {
+    return 1;
+  }
+  size_t new_len = buf->length + len;
+  if (new_len < len) {
+    OPENSSL_PUT_ERROR(BUF, ERR_R_OVERFLOW);
+    return 0;
+  }
+  if (!BUF_MEM_reserve(buf, new_len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(buf->data + buf->length, in, len);
+  buf->length = new_len;
+  return 1;
+}
+
+char *BUF_strdup(const char *str) { return OPENSSL_strdup(str); }
+
+size_t BUF_strnlen(const char *str, size_t max_len) {
+  return OPENSSL_strnlen(str, max_len);
+}
+
+char *BUF_strndup(const char *str, size_t size) {
+  return OPENSSL_strndup(str, size);
+}
+
+size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size) {
+  return OPENSSL_strlcpy(dst, src, dst_size);
+}
+
+size_t BUF_strlcat(char *dst, const char *src, size_t dst_size) {
+  return OPENSSL_strlcat(dst, src, dst_size);
+}
+
+void *BUF_memdup(const void *data, size_t size) {
+  return OPENSSL_memdup(data, size);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c
new file mode 100644
index 0000000..43696a7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c	
@@ -0,0 +1,52 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+
+#include <openssl_grpc/bytestring.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int CBB_finish_i2d(CBB *cbb, uint8_t **outp) {
+  assert(cbb->base->can_resize);
+
+  uint8_t *der;
+  size_t der_len;
+  if (!CBB_finish(cbb, &der, &der_len)) {
+    CBB_cleanup(cbb);
+    return -1;
+  }
+  if (der_len > INT_MAX) {
+    OPENSSL_free(der);
+    return -1;
+  }
+  if (outp != NULL) {
+    if (*outp == NULL) {
+      *outp = der;
+      der = NULL;
+    } else {
+      OPENSSL_memcpy(*outp, der, der_len);
+      *outp += der_len;
+    }
+  }
+  OPENSSL_free(der);
+  return (int)der_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c.grpc_back
new file mode 100644
index 0000000..50df9cc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/asn1_compat.c.grpc_back	
@@ -0,0 +1,52 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+
+#include <openssl/bytestring.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int CBB_finish_i2d(CBB *cbb, uint8_t **outp) {
+  assert(cbb->base->can_resize);
+
+  uint8_t *der;
+  size_t der_len;
+  if (!CBB_finish(cbb, &der, &der_len)) {
+    CBB_cleanup(cbb);
+    return -1;
+  }
+  if (der_len > INT_MAX) {
+    OPENSSL_free(der);
+    return -1;
+  }
+  if (outp != NULL) {
+    if (*outp == NULL) {
+      *outp = der;
+      der = NULL;
+    } else {
+      OPENSSL_memcpy(*outp, der, der_len);
+      *outp += der_len;
+    }
+  }
+  OPENSSL_free(der);
+  return (int)der_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c
new file mode 100644
index 0000000..e4a9283
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c	
@@ -0,0 +1,265 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bytestring.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// kMaxDepth is a just a sanity limit. The code should be such that the length
+// of the input being processes always decreases. None the less, a very large
+// input could otherwise cause the stack to overflow.
+static const unsigned kMaxDepth = 2048;
+
+// is_string_type returns one if |tag| is a string type and zero otherwise. It
+// ignores the constructed bit.
+static int is_string_type(unsigned tag) {
+  switch (tag & ~CBS_ASN1_CONSTRUCTED) {
+    case CBS_ASN1_BITSTRING:
+    case CBS_ASN1_OCTETSTRING:
+    case CBS_ASN1_UTF8STRING:
+    case CBS_ASN1_NUMERICSTRING:
+    case CBS_ASN1_PRINTABLESTRING:
+    case CBS_ASN1_T61STRING:
+    case CBS_ASN1_VIDEOTEXSTRING:
+    case CBS_ASN1_IA5STRING:
+    case CBS_ASN1_GRAPHICSTRING:
+    case CBS_ASN1_VISIBLESTRING:
+    case CBS_ASN1_GENERALSTRING:
+    case CBS_ASN1_UNIVERSALSTRING:
+    case CBS_ASN1_BMPSTRING:
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+// cbs_find_ber walks an ASN.1 structure in |orig_in| and sets |*ber_found|
+// depending on whether an indefinite length element or constructed string was
+// found. The value of |orig_in| is not changed. It returns one on success (i.e.
+// |*ber_found| was set) and zero on error.
+static int cbs_find_ber(const CBS *orig_in, char *ber_found, unsigned depth) {
+  CBS in;
+
+  if (depth > kMaxDepth) {
+    return 0;
+  }
+
+  CBS_init(&in, CBS_data(orig_in), CBS_len(orig_in));
+  *ber_found = 0;
+
+  while (CBS_len(&in) > 0) {
+    CBS contents;
+    unsigned tag;
+    size_t header_len;
+
+    if (!CBS_get_any_ber_asn1_element(&in, &contents, &tag, &header_len)) {
+      return 0;
+    }
+    if (CBS_len(&contents) == header_len &&
+        header_len > 0 &&
+        CBS_data(&contents)[header_len-1] == 0x80) {
+      // Found an indefinite-length element.
+      *ber_found = 1;
+      return 1;
+    }
+    if (tag & CBS_ASN1_CONSTRUCTED) {
+      if (is_string_type(tag)) {
+        // Constructed strings are only legal in BER and require conversion.
+        *ber_found = 1;
+        return 1;
+      }
+      if (!CBS_skip(&contents, header_len) ||
+          !cbs_find_ber(&contents, ber_found, depth + 1)) {
+        return 0;
+      }
+    }
+  }
+
+  return 1;
+}
+
+// is_eoc returns true if |header_len| and |contents|, as returned by
+// |CBS_get_any_ber_asn1_element|, indicate an "end of contents" (EOC) value.
+static char is_eoc(size_t header_len, CBS *contents) {
+  return header_len == 2 && CBS_len(contents) == 2 &&
+         OPENSSL_memcmp(CBS_data(contents), "\x00\x00", 2) == 0;
+}
+
+// cbs_convert_ber reads BER data from |in| and writes DER data to |out|. If
+// |string_tag| is non-zero, then all elements must match |string_tag| up to the
+// constructed bit and primitive element bodies are written to |out| without
+// element headers. This is used when concatenating the fragments of a
+// constructed string. If |looking_for_eoc| is set then any EOC elements found
+// will cause the function to return after consuming it. It returns one on
+// success and zero on error.
+static int cbs_convert_ber(CBS *in, CBB *out, unsigned string_tag,
+                           char looking_for_eoc, unsigned depth) {
+  assert(!(string_tag & CBS_ASN1_CONSTRUCTED));
+
+  if (depth > kMaxDepth) {
+    return 0;
+  }
+
+  while (CBS_len(in) > 0) {
+    CBS contents;
+    unsigned tag, child_string_tag = string_tag;
+    size_t header_len;
+    CBB *out_contents, out_contents_storage;
+
+    if (!CBS_get_any_ber_asn1_element(in, &contents, &tag, &header_len)) {
+      return 0;
+    }
+
+    if (is_eoc(header_len, &contents)) {
+      return looking_for_eoc;
+    }
+
+    if (string_tag != 0) {
+      // This is part of a constructed string. All elements must match
+      // |string_tag| up to the constructed bit and get appended to |out|
+      // without a child element.
+      if ((tag & ~CBS_ASN1_CONSTRUCTED) != string_tag) {
+        return 0;
+      }
+      out_contents = out;
+    } else {
+      unsigned out_tag = tag;
+      if ((tag & CBS_ASN1_CONSTRUCTED) && is_string_type(tag)) {
+        // If a constructed string, clear the constructed bit and inform
+        // children to concatenate bodies.
+        out_tag &= ~CBS_ASN1_CONSTRUCTED;
+        child_string_tag = out_tag;
+      }
+      if (!CBB_add_asn1(out, &out_contents_storage, out_tag)) {
+        return 0;
+      }
+      out_contents = &out_contents_storage;
+    }
+
+    if (CBS_len(&contents) == header_len && header_len > 0 &&
+        CBS_data(&contents)[header_len - 1] == 0x80) {
+      // This is an indefinite length element.
+      if (!cbs_convert_ber(in, out_contents, child_string_tag,
+                           1 /* looking for eoc */, depth + 1) ||
+          !CBB_flush(out)) {
+        return 0;
+      }
+      continue;
+    }
+
+    if (!CBS_skip(&contents, header_len)) {
+      return 0;
+    }
+
+    if (tag & CBS_ASN1_CONSTRUCTED) {
+      // Recurse into children.
+      if (!cbs_convert_ber(&contents, out_contents, child_string_tag,
+                           0 /* not looking for eoc */, depth + 1)) {
+        return 0;
+      }
+    } else {
+      // Copy primitive contents as-is.
+      if (!CBB_add_bytes(out_contents, CBS_data(&contents),
+                         CBS_len(&contents))) {
+        return 0;
+      }
+    }
+
+    if (!CBB_flush(out)) {
+      return 0;
+    }
+  }
+
+  return looking_for_eoc == 0;
+}
+
+int CBS_asn1_ber_to_der(CBS *in, CBS *out, uint8_t **out_storage) {
+  CBB cbb;
+
+  // First, do a quick walk to find any indefinite-length elements. Most of the
+  // time we hope that there aren't any and thus we can quickly return.
+  char conversion_needed;
+  if (!cbs_find_ber(in, &conversion_needed, 0)) {
+    return 0;
+  }
+
+  if (!conversion_needed) {
+    if (!CBS_get_any_asn1_element(in, out, NULL, NULL)) {
+      return 0;
+    }
+    *out_storage = NULL;
+    return 1;
+  }
+
+  size_t len;
+  if (!CBB_init(&cbb, CBS_len(in)) ||
+      !cbs_convert_ber(in, &cbb, 0, 0, 0) ||
+      !CBB_finish(&cbb, out_storage, &len)) {
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+
+  CBS_init(out, *out_storage, len);
+  return 1;
+}
+
+int CBS_get_asn1_implicit_string(CBS *in, CBS *out, uint8_t **out_storage,
+                                 unsigned outer_tag, unsigned inner_tag) {
+  assert(!(outer_tag & CBS_ASN1_CONSTRUCTED));
+  assert(!(inner_tag & CBS_ASN1_CONSTRUCTED));
+  assert(is_string_type(inner_tag));
+
+  if (CBS_peek_asn1_tag(in, outer_tag)) {
+    // Normal implicitly-tagged string.
+    *out_storage = NULL;
+    return CBS_get_asn1(in, out, outer_tag);
+  }
+
+  // Otherwise, try to parse an implicitly-tagged constructed string.
+  // |CBS_asn1_ber_to_der| is assumed to have run, so only allow one level deep
+  // of nesting.
+  CBB result;
+  CBS child;
+  if (!CBB_init(&result, CBS_len(in)) ||
+      !CBS_get_asn1(in, &child, outer_tag | CBS_ASN1_CONSTRUCTED)) {
+    goto err;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS chunk;
+    if (!CBS_get_asn1(&child, &chunk, inner_tag) ||
+        !CBB_add_bytes(&result, CBS_data(&chunk), CBS_len(&chunk))) {
+      goto err;
+    }
+  }
+
+  uint8_t *data;
+  size_t len;
+  if (!CBB_finish(&result, &data, &len)) {
+    goto err;
+  }
+
+  CBS_init(out, data, len);
+  *out_storage = data;
+  return 1;
+
+err:
+  CBB_cleanup(&result);
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c.grpc_back
new file mode 100644
index 0000000..7437239
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/ber.c.grpc_back	
@@ -0,0 +1,265 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bytestring.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// kMaxDepth is a just a sanity limit. The code should be such that the length
+// of the input being processes always decreases. None the less, a very large
+// input could otherwise cause the stack to overflow.
+static const unsigned kMaxDepth = 2048;
+
+// is_string_type returns one if |tag| is a string type and zero otherwise. It
+// ignores the constructed bit.
+static int is_string_type(unsigned tag) {
+  switch (tag & ~CBS_ASN1_CONSTRUCTED) {
+    case CBS_ASN1_BITSTRING:
+    case CBS_ASN1_OCTETSTRING:
+    case CBS_ASN1_UTF8STRING:
+    case CBS_ASN1_NUMERICSTRING:
+    case CBS_ASN1_PRINTABLESTRING:
+    case CBS_ASN1_T61STRING:
+    case CBS_ASN1_VIDEOTEXSTRING:
+    case CBS_ASN1_IA5STRING:
+    case CBS_ASN1_GRAPHICSTRING:
+    case CBS_ASN1_VISIBLESTRING:
+    case CBS_ASN1_GENERALSTRING:
+    case CBS_ASN1_UNIVERSALSTRING:
+    case CBS_ASN1_BMPSTRING:
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+// cbs_find_ber walks an ASN.1 structure in |orig_in| and sets |*ber_found|
+// depending on whether an indefinite length element or constructed string was
+// found. The value of |orig_in| is not changed. It returns one on success (i.e.
+// |*ber_found| was set) and zero on error.
+static int cbs_find_ber(const CBS *orig_in, char *ber_found, unsigned depth) {
+  CBS in;
+
+  if (depth > kMaxDepth) {
+    return 0;
+  }
+
+  CBS_init(&in, CBS_data(orig_in), CBS_len(orig_in));
+  *ber_found = 0;
+
+  while (CBS_len(&in) > 0) {
+    CBS contents;
+    unsigned tag;
+    size_t header_len;
+
+    if (!CBS_get_any_ber_asn1_element(&in, &contents, &tag, &header_len)) {
+      return 0;
+    }
+    if (CBS_len(&contents) == header_len &&
+        header_len > 0 &&
+        CBS_data(&contents)[header_len-1] == 0x80) {
+      // Found an indefinite-length element.
+      *ber_found = 1;
+      return 1;
+    }
+    if (tag & CBS_ASN1_CONSTRUCTED) {
+      if (is_string_type(tag)) {
+        // Constructed strings are only legal in BER and require conversion.
+        *ber_found = 1;
+        return 1;
+      }
+      if (!CBS_skip(&contents, header_len) ||
+          !cbs_find_ber(&contents, ber_found, depth + 1)) {
+        return 0;
+      }
+    }
+  }
+
+  return 1;
+}
+
+// is_eoc returns true if |header_len| and |contents|, as returned by
+// |CBS_get_any_ber_asn1_element|, indicate an "end of contents" (EOC) value.
+static char is_eoc(size_t header_len, CBS *contents) {
+  return header_len == 2 && CBS_len(contents) == 2 &&
+         OPENSSL_memcmp(CBS_data(contents), "\x00\x00", 2) == 0;
+}
+
+// cbs_convert_ber reads BER data from |in| and writes DER data to |out|. If
+// |string_tag| is non-zero, then all elements must match |string_tag| up to the
+// constructed bit and primitive element bodies are written to |out| without
+// element headers. This is used when concatenating the fragments of a
+// constructed string. If |looking_for_eoc| is set then any EOC elements found
+// will cause the function to return after consuming it. It returns one on
+// success and zero on error.
+static int cbs_convert_ber(CBS *in, CBB *out, unsigned string_tag,
+                           char looking_for_eoc, unsigned depth) {
+  assert(!(string_tag & CBS_ASN1_CONSTRUCTED));
+
+  if (depth > kMaxDepth) {
+    return 0;
+  }
+
+  while (CBS_len(in) > 0) {
+    CBS contents;
+    unsigned tag, child_string_tag = string_tag;
+    size_t header_len;
+    CBB *out_contents, out_contents_storage;
+
+    if (!CBS_get_any_ber_asn1_element(in, &contents, &tag, &header_len)) {
+      return 0;
+    }
+
+    if (is_eoc(header_len, &contents)) {
+      return looking_for_eoc;
+    }
+
+    if (string_tag != 0) {
+      // This is part of a constructed string. All elements must match
+      // |string_tag| up to the constructed bit and get appended to |out|
+      // without a child element.
+      if ((tag & ~CBS_ASN1_CONSTRUCTED) != string_tag) {
+        return 0;
+      }
+      out_contents = out;
+    } else {
+      unsigned out_tag = tag;
+      if ((tag & CBS_ASN1_CONSTRUCTED) && is_string_type(tag)) {
+        // If a constructed string, clear the constructed bit and inform
+        // children to concatenate bodies.
+        out_tag &= ~CBS_ASN1_CONSTRUCTED;
+        child_string_tag = out_tag;
+      }
+      if (!CBB_add_asn1(out, &out_contents_storage, out_tag)) {
+        return 0;
+      }
+      out_contents = &out_contents_storage;
+    }
+
+    if (CBS_len(&contents) == header_len && header_len > 0 &&
+        CBS_data(&contents)[header_len - 1] == 0x80) {
+      // This is an indefinite length element.
+      if (!cbs_convert_ber(in, out_contents, child_string_tag,
+                           1 /* looking for eoc */, depth + 1) ||
+          !CBB_flush(out)) {
+        return 0;
+      }
+      continue;
+    }
+
+    if (!CBS_skip(&contents, header_len)) {
+      return 0;
+    }
+
+    if (tag & CBS_ASN1_CONSTRUCTED) {
+      // Recurse into children.
+      if (!cbs_convert_ber(&contents, out_contents, child_string_tag,
+                           0 /* not looking for eoc */, depth + 1)) {
+        return 0;
+      }
+    } else {
+      // Copy primitive contents as-is.
+      if (!CBB_add_bytes(out_contents, CBS_data(&contents),
+                         CBS_len(&contents))) {
+        return 0;
+      }
+    }
+
+    if (!CBB_flush(out)) {
+      return 0;
+    }
+  }
+
+  return looking_for_eoc == 0;
+}
+
+int CBS_asn1_ber_to_der(CBS *in, CBS *out, uint8_t **out_storage) {
+  CBB cbb;
+
+  // First, do a quick walk to find any indefinite-length elements. Most of the
+  // time we hope that there aren't any and thus we can quickly return.
+  char conversion_needed;
+  if (!cbs_find_ber(in, &conversion_needed, 0)) {
+    return 0;
+  }
+
+  if (!conversion_needed) {
+    if (!CBS_get_any_asn1_element(in, out, NULL, NULL)) {
+      return 0;
+    }
+    *out_storage = NULL;
+    return 1;
+  }
+
+  size_t len;
+  if (!CBB_init(&cbb, CBS_len(in)) ||
+      !cbs_convert_ber(in, &cbb, 0, 0, 0) ||
+      !CBB_finish(&cbb, out_storage, &len)) {
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+
+  CBS_init(out, *out_storage, len);
+  return 1;
+}
+
+int CBS_get_asn1_implicit_string(CBS *in, CBS *out, uint8_t **out_storage,
+                                 unsigned outer_tag, unsigned inner_tag) {
+  assert(!(outer_tag & CBS_ASN1_CONSTRUCTED));
+  assert(!(inner_tag & CBS_ASN1_CONSTRUCTED));
+  assert(is_string_type(inner_tag));
+
+  if (CBS_peek_asn1_tag(in, outer_tag)) {
+    // Normal implicitly-tagged string.
+    *out_storage = NULL;
+    return CBS_get_asn1(in, out, outer_tag);
+  }
+
+  // Otherwise, try to parse an implicitly-tagged constructed string.
+  // |CBS_asn1_ber_to_der| is assumed to have run, so only allow one level deep
+  // of nesting.
+  CBB result;
+  CBS child;
+  if (!CBB_init(&result, CBS_len(in)) ||
+      !CBS_get_asn1(in, &child, outer_tag | CBS_ASN1_CONSTRUCTED)) {
+    goto err;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS chunk;
+    if (!CBS_get_asn1(&child, &chunk, inner_tag) ||
+        !CBB_add_bytes(&result, CBS_data(&chunk), CBS_len(&chunk))) {
+      goto err;
+    }
+  }
+
+  uint8_t *data;
+  size_t len;
+  if (!CBB_finish(&result, &data, &len)) {
+    goto err;
+  }
+
+  CBS_init(out, data, len);
+  *out_storage = data;
+  return 1;
+
+err:
+  CBB_cleanup(&result);
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c
new file mode 100644
index 0000000..1b7ae10
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c	
@@ -0,0 +1,719 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bytestring.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+void CBB_zero(CBB *cbb) {
+  OPENSSL_memset(cbb, 0, sizeof(CBB));
+}
+
+static int cbb_init(CBB *cbb, uint8_t *buf, size_t cap) {
+  // This assumes that |cbb| has already been zeroed.
+  struct cbb_buffer_st *base;
+
+  base = OPENSSL_malloc(sizeof(struct cbb_buffer_st));
+  if (base == NULL) {
+    return 0;
+  }
+
+  base->buf = buf;
+  base->len = 0;
+  base->cap = cap;
+  base->can_resize = 1;
+  base->error = 0;
+
+  cbb->base = base;
+  cbb->is_child = 0;
+  return 1;
+}
+
+int CBB_init(CBB *cbb, size_t initial_capacity) {
+  CBB_zero(cbb);
+
+  uint8_t *buf = OPENSSL_malloc(initial_capacity);
+  if (initial_capacity > 0 && buf == NULL) {
+    return 0;
+  }
+
+  if (!cbb_init(cbb, buf, initial_capacity)) {
+    OPENSSL_free(buf);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len) {
+  CBB_zero(cbb);
+
+  if (!cbb_init(cbb, buf, len)) {
+    return 0;
+  }
+
+  cbb->base->can_resize = 0;
+  return 1;
+}
+
+void CBB_cleanup(CBB *cbb) {
+  // Child |CBB|s are non-owning. They are implicitly discarded and should not
+  // be used with |CBB_cleanup| or |ScopedCBB|.
+  assert(!cbb->is_child);
+  if (cbb->is_child) {
+    return;
+  }
+
+  if (cbb->base) {
+    if (cbb->base->can_resize) {
+      OPENSSL_free(cbb->base->buf);
+    }
+    OPENSSL_free(cbb->base);
+  }
+  cbb->base = NULL;
+}
+
+static int cbb_buffer_reserve(struct cbb_buffer_st *base, uint8_t **out,
+                              size_t len) {
+  size_t newlen;
+
+  if (base == NULL) {
+    return 0;
+  }
+
+  newlen = base->len + len;
+  if (newlen < base->len) {
+    // Overflow
+    goto err;
+  }
+
+  if (newlen > base->cap) {
+    size_t newcap = base->cap * 2;
+    uint8_t *newbuf;
+
+    if (!base->can_resize) {
+      goto err;
+    }
+
+    if (newcap < base->cap || newcap < newlen) {
+      newcap = newlen;
+    }
+    newbuf = OPENSSL_realloc(base->buf, newcap);
+    if (newbuf == NULL) {
+      goto err;
+    }
+
+    base->buf = newbuf;
+    base->cap = newcap;
+  }
+
+  if (out) {
+    *out = base->buf + base->len;
+  }
+
+  return 1;
+
+err:
+  base->error = 1;
+  return 0;
+}
+
+static int cbb_buffer_add(struct cbb_buffer_st *base, uint8_t **out,
+                          size_t len) {
+  if (!cbb_buffer_reserve(base, out, len)) {
+    return 0;
+  }
+  // This will not overflow or |cbb_buffer_reserve| would have failed.
+  base->len += len;
+  return 1;
+}
+
+static int cbb_buffer_add_u(struct cbb_buffer_st *base, uint64_t v,
+                            size_t len_len) {
+  if (len_len == 0) {
+    return 1;
+  }
+
+  uint8_t *buf;
+  if (!cbb_buffer_add(base, &buf, len_len)) {
+    return 0;
+  }
+
+  for (size_t i = len_len - 1; i < len_len; i--) {
+    buf[i] = v;
+    v >>= 8;
+  }
+
+  if (v != 0) {
+    base->error = 1;
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len) {
+  if (cbb->is_child) {
+    return 0;
+  }
+
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  if (cbb->base->can_resize && (out_data == NULL || out_len == NULL)) {
+    // |out_data| and |out_len| can only be NULL if the CBB is fixed.
+    return 0;
+  }
+
+  if (out_data != NULL) {
+    *out_data = cbb->base->buf;
+  }
+  if (out_len != NULL) {
+    *out_len = cbb->base->len;
+  }
+  cbb->base->buf = NULL;
+  CBB_cleanup(cbb);
+  return 1;
+}
+
+// CBB_flush recurses and then writes out any pending length prefix. The
+// current length of the underlying base is taken to be the length of the
+// length-prefixed data.
+int CBB_flush(CBB *cbb) {
+  size_t child_start, i, len;
+
+  // If |cbb->base| has hit an error, the buffer is in an undefined state, so
+  // fail all following calls. In particular, |cbb->child| may point to invalid
+  // memory.
+  if (cbb->base == NULL || cbb->base->error) {
+    return 0;
+  }
+
+  if (cbb->child == NULL || cbb->child->pending_len_len == 0) {
+    return 1;
+  }
+
+  child_start = cbb->child->offset + cbb->child->pending_len_len;
+
+  if (!CBB_flush(cbb->child) ||
+      child_start < cbb->child->offset ||
+      cbb->base->len < child_start) {
+    goto err;
+  }
+
+  len = cbb->base->len - child_start;
+
+  if (cbb->child->pending_is_asn1) {
+    // For ASN.1 we assume that we'll only need a single byte for the length.
+    // If that turned out to be incorrect, we have to move the contents along
+    // in order to make space.
+    uint8_t len_len;
+    uint8_t initial_length_byte;
+
+    assert (cbb->child->pending_len_len == 1);
+
+    if (len > 0xfffffffe) {
+      // Too large.
+      goto err;
+    } else if (len > 0xffffff) {
+      len_len = 5;
+      initial_length_byte = 0x80 | 4;
+    } else if (len > 0xffff) {
+      len_len = 4;
+      initial_length_byte = 0x80 | 3;
+    } else if (len > 0xff) {
+      len_len = 3;
+      initial_length_byte = 0x80 | 2;
+    } else if (len > 0x7f) {
+      len_len = 2;
+      initial_length_byte = 0x80 | 1;
+    } else {
+      len_len = 1;
+      initial_length_byte = (uint8_t)len;
+      len = 0;
+    }
+
+    if (len_len != 1) {
+      // We need to move the contents along in order to make space.
+      size_t extra_bytes = len_len - 1;
+      if (!cbb_buffer_add(cbb->base, NULL, extra_bytes)) {
+        goto err;
+      }
+      OPENSSL_memmove(cbb->base->buf + child_start + extra_bytes,
+                      cbb->base->buf + child_start, len);
+    }
+    cbb->base->buf[cbb->child->offset++] = initial_length_byte;
+    cbb->child->pending_len_len = len_len - 1;
+  }
+
+  for (i = cbb->child->pending_len_len - 1; i < cbb->child->pending_len_len;
+       i--) {
+    cbb->base->buf[cbb->child->offset + i] = (uint8_t)len;
+    len >>= 8;
+  }
+  if (len != 0) {
+    goto err;
+  }
+
+  cbb->child->base = NULL;
+  cbb->child = NULL;
+
+  return 1;
+
+err:
+  cbb->base->error = 1;
+  return 0;
+}
+
+const uint8_t *CBB_data(const CBB *cbb) {
+  assert(cbb->child == NULL);
+  return cbb->base->buf + cbb->offset + cbb->pending_len_len;
+}
+
+size_t CBB_len(const CBB *cbb) {
+  assert(cbb->child == NULL);
+  assert(cbb->offset + cbb->pending_len_len <= cbb->base->len);
+
+  return cbb->base->len - cbb->offset - cbb->pending_len_len;
+}
+
+static int cbb_add_length_prefixed(CBB *cbb, CBB *out_contents,
+                                   uint8_t len_len) {
+  uint8_t *prefix_bytes;
+
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  size_t offset = cbb->base->len;
+  if (!cbb_buffer_add(cbb->base, &prefix_bytes, len_len)) {
+    return 0;
+  }
+
+  OPENSSL_memset(prefix_bytes, 0, len_len);
+  OPENSSL_memset(out_contents, 0, sizeof(CBB));
+  out_contents->base = cbb->base;
+  out_contents->is_child = 1;
+  cbb->child = out_contents;
+  cbb->child->offset = offset;
+  cbb->child->pending_len_len = len_len;
+  cbb->child->pending_is_asn1 = 0;
+
+  return 1;
+}
+
+int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 1);
+}
+
+int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 2);
+}
+
+int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 3);
+}
+
+// add_base128_integer encodes |v| as a big-endian base-128 integer where the
+// high bit of each byte indicates where there is more data. This is the
+// encoding used in DER for both high tag number form and OID components.
+static int add_base128_integer(CBB *cbb, uint64_t v) {
+  unsigned len_len = 0;
+  uint64_t copy = v;
+  while (copy > 0) {
+    len_len++;
+    copy >>= 7;
+  }
+  if (len_len == 0) {
+    len_len = 1;  // Zero is encoded with one byte.
+  }
+  for (unsigned i = len_len - 1; i < len_len; i--) {
+    uint8_t byte = (v >> (7 * i)) & 0x7f;
+    if (i != 0) {
+      // The high bit denotes whether there is more data.
+      byte |= 0x80;
+    }
+    if (!CBB_add_u8(cbb, byte)) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  // Split the tag into leading bits and tag number.
+  uint8_t tag_bits = (tag >> CBS_ASN1_TAG_SHIFT) & 0xe0;
+  unsigned tag_number = tag & CBS_ASN1_TAG_NUMBER_MASK;
+  if (tag_number >= 0x1f) {
+    // Set all the bits in the tag number to signal high tag number form.
+    if (!CBB_add_u8(cbb, tag_bits | 0x1f) ||
+        !add_base128_integer(cbb, tag_number)) {
+      return 0;
+    }
+  } else if (!CBB_add_u8(cbb, tag_bits | tag_number)) {
+    return 0;
+  }
+
+  size_t offset = cbb->base->len;
+  if (!CBB_add_u8(cbb, 0)) {
+    return 0;
+  }
+
+  OPENSSL_memset(out_contents, 0, sizeof(CBB));
+  out_contents->base = cbb->base;
+  out_contents->is_child = 1;
+  cbb->child = out_contents;
+  cbb->child->offset = offset;
+  cbb->child->pending_len_len = 1;
+  cbb->child->pending_is_asn1 = 1;
+
+  return 1;
+}
+
+int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len) {
+  uint8_t *dest;
+
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_add(cbb->base, &dest, len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(dest, data, len);
+  return 1;
+}
+
+int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len) {
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_add(cbb->base, out_data, len)) {
+    return 0;
+  }
+  return 1;
+}
+
+int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len) {
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_reserve(cbb->base, out_data, len)) {
+    return 0;
+  }
+  return 1;
+}
+
+int CBB_did_write(CBB *cbb, size_t len) {
+  size_t newlen = cbb->base->len + len;
+  if (cbb->child != NULL ||
+      newlen < cbb->base->len ||
+      newlen > cbb->base->cap) {
+    return 0;
+  }
+  cbb->base->len = newlen;
+  return 1;
+}
+
+int CBB_add_u8(CBB *cbb, uint8_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 1);
+}
+
+int CBB_add_u16(CBB *cbb, uint16_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 2);
+}
+
+int CBB_add_u16le(CBB *cbb, uint16_t value) {
+  return CBB_add_u16(cbb, CRYPTO_bswap2(value));
+}
+
+int CBB_add_u24(CBB *cbb, uint32_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 3);
+}
+
+int CBB_add_u32(CBB *cbb, uint32_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 4);
+}
+
+int CBB_add_u32le(CBB *cbb, uint32_t value) {
+  return CBB_add_u32(cbb, CRYPTO_bswap4(value));
+}
+
+int CBB_add_u64(CBB *cbb, uint64_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+  return cbb_buffer_add_u(cbb->base, value, 8);
+}
+
+int CBB_add_u64le(CBB *cbb, uint64_t value) {
+  return CBB_add_u64(cbb, CRYPTO_bswap8(value));
+}
+
+void CBB_discard_child(CBB *cbb) {
+  if (cbb->child == NULL) {
+    return;
+  }
+
+  cbb->base->len = cbb->child->offset;
+
+  cbb->child->base = NULL;
+  cbb->child = NULL;
+}
+
+int CBB_add_asn1_uint64(CBB *cbb, uint64_t value) {
+  CBB child;
+  int started = 0;
+
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < 8; i++) {
+    uint8_t byte = (value >> 8*(7-i)) & 0xff;
+    if (!started) {
+      if (byte == 0) {
+        // Don't encode leading zeros.
+        continue;
+      }
+      // If the high bit is set, add a padding byte to make it
+      // unsigned.
+      if ((byte & 0x80) && !CBB_add_u8(&child, 0)) {
+        return 0;
+      }
+      started = 1;
+    }
+    if (!CBB_add_u8(&child, byte)) {
+      return 0;
+    }
+  }
+
+  // 0 is encoded as a single 0, not the empty string.
+  if (!started && !CBB_add_u8(&child, 0)) {
+    return 0;
+  }
+
+  return CBB_flush(cbb);
+}
+
+int CBB_add_asn1_int64(CBB *cbb, int64_t value) {
+  if (value >= 0) {
+    return CBB_add_asn1_uint64(cbb, value);
+  }
+
+  union {
+    int64_t i;
+    uint8_t bytes[sizeof(int64_t)];
+  } u;
+  u.i = value;
+  int start = 7;
+  // Skip leading sign-extension bytes unless they are necessary.
+  while (start > 0 && (u.bytes[start] == 0xff && (u.bytes[start - 1] & 0x80))) {
+    start--;
+  }
+
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+  for (int i = start; i >= 0; i--) {
+    if (!CBB_add_u8(&child, u.bytes[i])) {
+      return 0;
+    }
+  }
+  return CBB_flush(cbb);
+}
+
+int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data, size_t data_len) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&child, data, data_len) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_add_asn1_bool(CBB *cbb, int value) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_BOOLEAN) ||
+      !CBB_add_u8(&child, value != 0 ? 0xff : 0) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+// parse_dotted_decimal parses one decimal component from |cbs|, where |cbs| is
+// an OID literal, e.g., "1.2.840.113554.4.1.72585". It consumes both the
+// component and the dot, so |cbs| may be passed into the function again for the
+// next value.
+static int parse_dotted_decimal(CBS *cbs, uint64_t *out) {
+  *out = 0;
+  int seen_digit = 0;
+  for (;;) {
+    // Valid terminators for a component are the end of the string or a
+    // non-terminal dot. If the string ends with a dot, this is not a valid OID
+    // string.
+    uint8_t u;
+    if (!CBS_get_u8(cbs, &u) ||
+        (u == '.' && CBS_len(cbs) > 0)) {
+      break;
+    }
+    if (u < '0' || u > '9' ||
+        // Forbid stray leading zeros.
+        (seen_digit && *out == 0) ||
+        // Check for overflow.
+        *out > UINT64_MAX / 10 ||
+        *out * 10 > UINT64_MAX - (u - '0')) {
+      return 0;
+    }
+    *out = *out * 10 + (u - '0');
+    seen_digit = 1;
+  }
+  // The empty string is not a legal OID component.
+  return seen_digit;
+}
+
+int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text, size_t len) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, (const uint8_t *)text, len);
+
+  // OIDs must have at least two components.
+  uint64_t a, b;
+  if (!parse_dotted_decimal(&cbs, &a) ||
+      !parse_dotted_decimal(&cbs, &b)) {
+    return 0;
+  }
+
+  // The first component is encoded as 40 * |a| + |b|. This assumes that |a| is
+  // 0, 1, or 2 and that, when it is 0 or 1, |b| is at most 39.
+  if (a > 2 ||
+      (a < 2 && b > 39) ||
+      b > UINT64_MAX - 80 ||
+      !add_base128_integer(cbb, 40u * a + b)) {
+    return 0;
+  }
+
+  // The remaining components are encoded unmodified.
+  while (CBS_len(&cbs) > 0) {
+    if (!parse_dotted_decimal(&cbs, &a) ||
+        !add_base128_integer(cbb, a)) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+static int compare_set_of_element(const void *a_ptr, const void *b_ptr) {
+  // See X.690, section 11.6 for the ordering. They are sorted in ascending
+  // order by their DER encoding.
+  const CBS *a = a_ptr, *b = b_ptr;
+  size_t a_len = CBS_len(a), b_len = CBS_len(b);
+  size_t min_len = a_len < b_len ? a_len : b_len;
+  int ret = OPENSSL_memcmp(CBS_data(a), CBS_data(b), min_len);
+  if (ret != 0) {
+    return ret;
+  }
+  if (a_len == b_len) {
+    return 0;
+  }
+  // If one is a prefix of the other, the shorter one sorts first. (This is not
+  // actually reachable. No DER encoding is a prefix of another DER encoding.)
+  return a_len < b_len ? -1 : 1;
+}
+
+int CBB_flush_asn1_set_of(CBB *cbb) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  CBS cbs;
+  size_t num_children = 0;
+  CBS_init(&cbs, CBB_data(cbb), CBB_len(cbb));
+  while (CBS_len(&cbs) != 0) {
+    if (!CBS_get_any_asn1_element(&cbs, NULL, NULL, NULL)) {
+      return 0;
+    }
+    num_children++;
+  }
+
+  if (num_children < 2) {
+    return 1;  // Nothing to do. This is the common case for X.509.
+  }
+  if (num_children > ((size_t)-1) / sizeof(CBS)) {
+    return 0;  // Overflow.
+  }
+
+  // Parse out the children and sort. We alias them into a copy of so they
+  // remain valid as we rewrite |cbb|.
+  int ret = 0;
+  size_t buf_len = CBB_len(cbb);
+  uint8_t *buf = OPENSSL_memdup(CBB_data(cbb), buf_len);
+  CBS *children = OPENSSL_malloc(num_children * sizeof(CBS));
+  if (buf == NULL || children == NULL) {
+    goto err;
+  }
+  CBS_init(&cbs, buf, buf_len);
+  for (size_t i = 0; i < num_children; i++) {
+    if (!CBS_get_any_asn1_element(&cbs, &children[i], NULL, NULL)) {
+      goto err;
+    }
+  }
+  qsort(children, num_children, sizeof(CBS), compare_set_of_element);
+
+  // Rewind |cbb| and write the contents back in the new order.
+  cbb->base->len = cbb->offset + cbb->pending_len_len;
+  for (size_t i = 0; i < num_children; i++) {
+    if (!CBB_add_bytes(cbb, CBS_data(&children[i]), CBS_len(&children[i]))) {
+      goto err;
+    }
+  }
+  assert(CBB_len(cbb) == buf_len);
+
+  ret = 1;
+
+err:
+  OPENSSL_free(buf);
+  OPENSSL_free(children);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c.grpc_back
new file mode 100644
index 0000000..efb89c7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbb.c.grpc_back	
@@ -0,0 +1,719 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bytestring.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+void CBB_zero(CBB *cbb) {
+  OPENSSL_memset(cbb, 0, sizeof(CBB));
+}
+
+static int cbb_init(CBB *cbb, uint8_t *buf, size_t cap) {
+  // This assumes that |cbb| has already been zeroed.
+  struct cbb_buffer_st *base;
+
+  base = OPENSSL_malloc(sizeof(struct cbb_buffer_st));
+  if (base == NULL) {
+    return 0;
+  }
+
+  base->buf = buf;
+  base->len = 0;
+  base->cap = cap;
+  base->can_resize = 1;
+  base->error = 0;
+
+  cbb->base = base;
+  cbb->is_child = 0;
+  return 1;
+}
+
+int CBB_init(CBB *cbb, size_t initial_capacity) {
+  CBB_zero(cbb);
+
+  uint8_t *buf = OPENSSL_malloc(initial_capacity);
+  if (initial_capacity > 0 && buf == NULL) {
+    return 0;
+  }
+
+  if (!cbb_init(cbb, buf, initial_capacity)) {
+    OPENSSL_free(buf);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len) {
+  CBB_zero(cbb);
+
+  if (!cbb_init(cbb, buf, len)) {
+    return 0;
+  }
+
+  cbb->base->can_resize = 0;
+  return 1;
+}
+
+void CBB_cleanup(CBB *cbb) {
+  // Child |CBB|s are non-owning. They are implicitly discarded and should not
+  // be used with |CBB_cleanup| or |ScopedCBB|.
+  assert(!cbb->is_child);
+  if (cbb->is_child) {
+    return;
+  }
+
+  if (cbb->base) {
+    if (cbb->base->can_resize) {
+      OPENSSL_free(cbb->base->buf);
+    }
+    OPENSSL_free(cbb->base);
+  }
+  cbb->base = NULL;
+}
+
+static int cbb_buffer_reserve(struct cbb_buffer_st *base, uint8_t **out,
+                              size_t len) {
+  size_t newlen;
+
+  if (base == NULL) {
+    return 0;
+  }
+
+  newlen = base->len + len;
+  if (newlen < base->len) {
+    // Overflow
+    goto err;
+  }
+
+  if (newlen > base->cap) {
+    size_t newcap = base->cap * 2;
+    uint8_t *newbuf;
+
+    if (!base->can_resize) {
+      goto err;
+    }
+
+    if (newcap < base->cap || newcap < newlen) {
+      newcap = newlen;
+    }
+    newbuf = OPENSSL_realloc(base->buf, newcap);
+    if (newbuf == NULL) {
+      goto err;
+    }
+
+    base->buf = newbuf;
+    base->cap = newcap;
+  }
+
+  if (out) {
+    *out = base->buf + base->len;
+  }
+
+  return 1;
+
+err:
+  base->error = 1;
+  return 0;
+}
+
+static int cbb_buffer_add(struct cbb_buffer_st *base, uint8_t **out,
+                          size_t len) {
+  if (!cbb_buffer_reserve(base, out, len)) {
+    return 0;
+  }
+  // This will not overflow or |cbb_buffer_reserve| would have failed.
+  base->len += len;
+  return 1;
+}
+
+static int cbb_buffer_add_u(struct cbb_buffer_st *base, uint64_t v,
+                            size_t len_len) {
+  if (len_len == 0) {
+    return 1;
+  }
+
+  uint8_t *buf;
+  if (!cbb_buffer_add(base, &buf, len_len)) {
+    return 0;
+  }
+
+  for (size_t i = len_len - 1; i < len_len; i--) {
+    buf[i] = v;
+    v >>= 8;
+  }
+
+  if (v != 0) {
+    base->error = 1;
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len) {
+  if (cbb->is_child) {
+    return 0;
+  }
+
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  if (cbb->base->can_resize && (out_data == NULL || out_len == NULL)) {
+    // |out_data| and |out_len| can only be NULL if the CBB is fixed.
+    return 0;
+  }
+
+  if (out_data != NULL) {
+    *out_data = cbb->base->buf;
+  }
+  if (out_len != NULL) {
+    *out_len = cbb->base->len;
+  }
+  cbb->base->buf = NULL;
+  CBB_cleanup(cbb);
+  return 1;
+}
+
+// CBB_flush recurses and then writes out any pending length prefix. The
+// current length of the underlying base is taken to be the length of the
+// length-prefixed data.
+int CBB_flush(CBB *cbb) {
+  size_t child_start, i, len;
+
+  // If |cbb->base| has hit an error, the buffer is in an undefined state, so
+  // fail all following calls. In particular, |cbb->child| may point to invalid
+  // memory.
+  if (cbb->base == NULL || cbb->base->error) {
+    return 0;
+  }
+
+  if (cbb->child == NULL || cbb->child->pending_len_len == 0) {
+    return 1;
+  }
+
+  child_start = cbb->child->offset + cbb->child->pending_len_len;
+
+  if (!CBB_flush(cbb->child) ||
+      child_start < cbb->child->offset ||
+      cbb->base->len < child_start) {
+    goto err;
+  }
+
+  len = cbb->base->len - child_start;
+
+  if (cbb->child->pending_is_asn1) {
+    // For ASN.1 we assume that we'll only need a single byte for the length.
+    // If that turned out to be incorrect, we have to move the contents along
+    // in order to make space.
+    uint8_t len_len;
+    uint8_t initial_length_byte;
+
+    assert (cbb->child->pending_len_len == 1);
+
+    if (len > 0xfffffffe) {
+      // Too large.
+      goto err;
+    } else if (len > 0xffffff) {
+      len_len = 5;
+      initial_length_byte = 0x80 | 4;
+    } else if (len > 0xffff) {
+      len_len = 4;
+      initial_length_byte = 0x80 | 3;
+    } else if (len > 0xff) {
+      len_len = 3;
+      initial_length_byte = 0x80 | 2;
+    } else if (len > 0x7f) {
+      len_len = 2;
+      initial_length_byte = 0x80 | 1;
+    } else {
+      len_len = 1;
+      initial_length_byte = (uint8_t)len;
+      len = 0;
+    }
+
+    if (len_len != 1) {
+      // We need to move the contents along in order to make space.
+      size_t extra_bytes = len_len - 1;
+      if (!cbb_buffer_add(cbb->base, NULL, extra_bytes)) {
+        goto err;
+      }
+      OPENSSL_memmove(cbb->base->buf + child_start + extra_bytes,
+                      cbb->base->buf + child_start, len);
+    }
+    cbb->base->buf[cbb->child->offset++] = initial_length_byte;
+    cbb->child->pending_len_len = len_len - 1;
+  }
+
+  for (i = cbb->child->pending_len_len - 1; i < cbb->child->pending_len_len;
+       i--) {
+    cbb->base->buf[cbb->child->offset + i] = (uint8_t)len;
+    len >>= 8;
+  }
+  if (len != 0) {
+    goto err;
+  }
+
+  cbb->child->base = NULL;
+  cbb->child = NULL;
+
+  return 1;
+
+err:
+  cbb->base->error = 1;
+  return 0;
+}
+
+const uint8_t *CBB_data(const CBB *cbb) {
+  assert(cbb->child == NULL);
+  return cbb->base->buf + cbb->offset + cbb->pending_len_len;
+}
+
+size_t CBB_len(const CBB *cbb) {
+  assert(cbb->child == NULL);
+  assert(cbb->offset + cbb->pending_len_len <= cbb->base->len);
+
+  return cbb->base->len - cbb->offset - cbb->pending_len_len;
+}
+
+static int cbb_add_length_prefixed(CBB *cbb, CBB *out_contents,
+                                   uint8_t len_len) {
+  uint8_t *prefix_bytes;
+
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  size_t offset = cbb->base->len;
+  if (!cbb_buffer_add(cbb->base, &prefix_bytes, len_len)) {
+    return 0;
+  }
+
+  OPENSSL_memset(prefix_bytes, 0, len_len);
+  OPENSSL_memset(out_contents, 0, sizeof(CBB));
+  out_contents->base = cbb->base;
+  out_contents->is_child = 1;
+  cbb->child = out_contents;
+  cbb->child->offset = offset;
+  cbb->child->pending_len_len = len_len;
+  cbb->child->pending_is_asn1 = 0;
+
+  return 1;
+}
+
+int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 1);
+}
+
+int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 2);
+}
+
+int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents) {
+  return cbb_add_length_prefixed(cbb, out_contents, 3);
+}
+
+// add_base128_integer encodes |v| as a big-endian base-128 integer where the
+// high bit of each byte indicates where there is more data. This is the
+// encoding used in DER for both high tag number form and OID components.
+static int add_base128_integer(CBB *cbb, uint64_t v) {
+  unsigned len_len = 0;
+  uint64_t copy = v;
+  while (copy > 0) {
+    len_len++;
+    copy >>= 7;
+  }
+  if (len_len == 0) {
+    len_len = 1;  // Zero is encoded with one byte.
+  }
+  for (unsigned i = len_len - 1; i < len_len; i--) {
+    uint8_t byte = (v >> (7 * i)) & 0x7f;
+    if (i != 0) {
+      // The high bit denotes whether there is more data.
+      byte |= 0x80;
+    }
+    if (!CBB_add_u8(cbb, byte)) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  // Split the tag into leading bits and tag number.
+  uint8_t tag_bits = (tag >> CBS_ASN1_TAG_SHIFT) & 0xe0;
+  unsigned tag_number = tag & CBS_ASN1_TAG_NUMBER_MASK;
+  if (tag_number >= 0x1f) {
+    // Set all the bits in the tag number to signal high tag number form.
+    if (!CBB_add_u8(cbb, tag_bits | 0x1f) ||
+        !add_base128_integer(cbb, tag_number)) {
+      return 0;
+    }
+  } else if (!CBB_add_u8(cbb, tag_bits | tag_number)) {
+    return 0;
+  }
+
+  size_t offset = cbb->base->len;
+  if (!CBB_add_u8(cbb, 0)) {
+    return 0;
+  }
+
+  OPENSSL_memset(out_contents, 0, sizeof(CBB));
+  out_contents->base = cbb->base;
+  out_contents->is_child = 1;
+  cbb->child = out_contents;
+  cbb->child->offset = offset;
+  cbb->child->pending_len_len = 1;
+  cbb->child->pending_is_asn1 = 1;
+
+  return 1;
+}
+
+int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len) {
+  uint8_t *dest;
+
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_add(cbb->base, &dest, len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(dest, data, len);
+  return 1;
+}
+
+int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len) {
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_add(cbb->base, out_data, len)) {
+    return 0;
+  }
+  return 1;
+}
+
+int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len) {
+  if (!CBB_flush(cbb) ||
+      !cbb_buffer_reserve(cbb->base, out_data, len)) {
+    return 0;
+  }
+  return 1;
+}
+
+int CBB_did_write(CBB *cbb, size_t len) {
+  size_t newlen = cbb->base->len + len;
+  if (cbb->child != NULL ||
+      newlen < cbb->base->len ||
+      newlen > cbb->base->cap) {
+    return 0;
+  }
+  cbb->base->len = newlen;
+  return 1;
+}
+
+int CBB_add_u8(CBB *cbb, uint8_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 1);
+}
+
+int CBB_add_u16(CBB *cbb, uint16_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 2);
+}
+
+int CBB_add_u16le(CBB *cbb, uint16_t value) {
+  return CBB_add_u16(cbb, CRYPTO_bswap2(value));
+}
+
+int CBB_add_u24(CBB *cbb, uint32_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 3);
+}
+
+int CBB_add_u32(CBB *cbb, uint32_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return cbb_buffer_add_u(cbb->base, value, 4);
+}
+
+int CBB_add_u32le(CBB *cbb, uint32_t value) {
+  return CBB_add_u32(cbb, CRYPTO_bswap4(value));
+}
+
+int CBB_add_u64(CBB *cbb, uint64_t value) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+  return cbb_buffer_add_u(cbb->base, value, 8);
+}
+
+int CBB_add_u64le(CBB *cbb, uint64_t value) {
+  return CBB_add_u64(cbb, CRYPTO_bswap8(value));
+}
+
+void CBB_discard_child(CBB *cbb) {
+  if (cbb->child == NULL) {
+    return;
+  }
+
+  cbb->base->len = cbb->child->offset;
+
+  cbb->child->base = NULL;
+  cbb->child = NULL;
+}
+
+int CBB_add_asn1_uint64(CBB *cbb, uint64_t value) {
+  CBB child;
+  int started = 0;
+
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < 8; i++) {
+    uint8_t byte = (value >> 8*(7-i)) & 0xff;
+    if (!started) {
+      if (byte == 0) {
+        // Don't encode leading zeros.
+        continue;
+      }
+      // If the high bit is set, add a padding byte to make it
+      // unsigned.
+      if ((byte & 0x80) && !CBB_add_u8(&child, 0)) {
+        return 0;
+      }
+      started = 1;
+    }
+    if (!CBB_add_u8(&child, byte)) {
+      return 0;
+    }
+  }
+
+  // 0 is encoded as a single 0, not the empty string.
+  if (!started && !CBB_add_u8(&child, 0)) {
+    return 0;
+  }
+
+  return CBB_flush(cbb);
+}
+
+int CBB_add_asn1_int64(CBB *cbb, int64_t value) {
+  if (value >= 0) {
+    return CBB_add_asn1_uint64(cbb, value);
+  }
+
+  union {
+    int64_t i;
+    uint8_t bytes[sizeof(int64_t)];
+  } u;
+  u.i = value;
+  int start = 7;
+  // Skip leading sign-extension bytes unless they are necessary.
+  while (start > 0 && (u.bytes[start] == 0xff && (u.bytes[start - 1] & 0x80))) {
+    start--;
+  }
+
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+  for (int i = start; i >= 0; i--) {
+    if (!CBB_add_u8(&child, u.bytes[i])) {
+      return 0;
+    }
+  }
+  return CBB_flush(cbb);
+}
+
+int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data, size_t data_len) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&child, data, data_len) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBB_add_asn1_bool(CBB *cbb, int value) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_BOOLEAN) ||
+      !CBB_add_u8(&child, value != 0 ? 0xff : 0) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+// parse_dotted_decimal parses one decimal component from |cbs|, where |cbs| is
+// an OID literal, e.g., "1.2.840.113554.4.1.72585". It consumes both the
+// component and the dot, so |cbs| may be passed into the function again for the
+// next value.
+static int parse_dotted_decimal(CBS *cbs, uint64_t *out) {
+  *out = 0;
+  int seen_digit = 0;
+  for (;;) {
+    // Valid terminators for a component are the end of the string or a
+    // non-terminal dot. If the string ends with a dot, this is not a valid OID
+    // string.
+    uint8_t u;
+    if (!CBS_get_u8(cbs, &u) ||
+        (u == '.' && CBS_len(cbs) > 0)) {
+      break;
+    }
+    if (u < '0' || u > '9' ||
+        // Forbid stray leading zeros.
+        (seen_digit && *out == 0) ||
+        // Check for overflow.
+        *out > UINT64_MAX / 10 ||
+        *out * 10 > UINT64_MAX - (u - '0')) {
+      return 0;
+    }
+    *out = *out * 10 + (u - '0');
+    seen_digit = 1;
+  }
+  // The empty string is not a legal OID component.
+  return seen_digit;
+}
+
+int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text, size_t len) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, (const uint8_t *)text, len);
+
+  // OIDs must have at least two components.
+  uint64_t a, b;
+  if (!parse_dotted_decimal(&cbs, &a) ||
+      !parse_dotted_decimal(&cbs, &b)) {
+    return 0;
+  }
+
+  // The first component is encoded as 40 * |a| + |b|. This assumes that |a| is
+  // 0, 1, or 2 and that, when it is 0 or 1, |b| is at most 39.
+  if (a > 2 ||
+      (a < 2 && b > 39) ||
+      b > UINT64_MAX - 80 ||
+      !add_base128_integer(cbb, 40u * a + b)) {
+    return 0;
+  }
+
+  // The remaining components are encoded unmodified.
+  while (CBS_len(&cbs) > 0) {
+    if (!parse_dotted_decimal(&cbs, &a) ||
+        !add_base128_integer(cbb, a)) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+static int compare_set_of_element(const void *a_ptr, const void *b_ptr) {
+  // See X.690, section 11.6 for the ordering. They are sorted in ascending
+  // order by their DER encoding.
+  const CBS *a = a_ptr, *b = b_ptr;
+  size_t a_len = CBS_len(a), b_len = CBS_len(b);
+  size_t min_len = a_len < b_len ? a_len : b_len;
+  int ret = OPENSSL_memcmp(CBS_data(a), CBS_data(b), min_len);
+  if (ret != 0) {
+    return ret;
+  }
+  if (a_len == b_len) {
+    return 0;
+  }
+  // If one is a prefix of the other, the shorter one sorts first. (This is not
+  // actually reachable. No DER encoding is a prefix of another DER encoding.)
+  return a_len < b_len ? -1 : 1;
+}
+
+int CBB_flush_asn1_set_of(CBB *cbb) {
+  if (!CBB_flush(cbb)) {
+    return 0;
+  }
+
+  CBS cbs;
+  size_t num_children = 0;
+  CBS_init(&cbs, CBB_data(cbb), CBB_len(cbb));
+  while (CBS_len(&cbs) != 0) {
+    if (!CBS_get_any_asn1_element(&cbs, NULL, NULL, NULL)) {
+      return 0;
+    }
+    num_children++;
+  }
+
+  if (num_children < 2) {
+    return 1;  // Nothing to do. This is the common case for X.509.
+  }
+  if (num_children > ((size_t)-1) / sizeof(CBS)) {
+    return 0;  // Overflow.
+  }
+
+  // Parse out the children and sort. We alias them into a copy of so they
+  // remain valid as we rewrite |cbb|.
+  int ret = 0;
+  size_t buf_len = CBB_len(cbb);
+  uint8_t *buf = OPENSSL_memdup(CBB_data(cbb), buf_len);
+  CBS *children = OPENSSL_malloc(num_children * sizeof(CBS));
+  if (buf == NULL || children == NULL) {
+    goto err;
+  }
+  CBS_init(&cbs, buf, buf_len);
+  for (size_t i = 0; i < num_children; i++) {
+    if (!CBS_get_any_asn1_element(&cbs, &children[i], NULL, NULL)) {
+      goto err;
+    }
+  }
+  qsort(children, num_children, sizeof(CBS), compare_set_of_element);
+
+  // Rewind |cbb| and write the contents back in the new order.
+  cbb->base->len = cbb->offset + cbb->pending_len_len;
+  for (size_t i = 0; i < num_children; i++) {
+    if (!CBB_add_bytes(cbb, CBS_data(&children[i]), CBS_len(&children[i]))) {
+      goto err;
+    }
+  }
+  assert(CBB_len(cbb) == buf_len);
+
+  ret = 1;
+
+err:
+  OPENSSL_free(buf);
+  OPENSSL_free(children);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c
new file mode 100644
index 0000000..3e238e0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c	
@@ -0,0 +1,688 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/bytestring.h>
+
+#include <assert.h>
+#include <inttypes.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+void CBS_init(CBS *cbs, const uint8_t *data, size_t len) {
+  cbs->data = data;
+  cbs->len = len;
+}
+
+static int cbs_get(CBS *cbs, const uint8_t **p, size_t n) {
+  if (cbs->len < n) {
+    return 0;
+  }
+
+  *p = cbs->data;
+  cbs->data += n;
+  cbs->len -= n;
+  return 1;
+}
+
+int CBS_skip(CBS *cbs, size_t len) {
+  const uint8_t *dummy;
+  return cbs_get(cbs, &dummy, len);
+}
+
+const uint8_t *CBS_data(const CBS *cbs) {
+  return cbs->data;
+}
+
+size_t CBS_len(const CBS *cbs) {
+  return cbs->len;
+}
+
+int CBS_stow(const CBS *cbs, uint8_t **out_ptr, size_t *out_len) {
+  OPENSSL_free(*out_ptr);
+  *out_ptr = NULL;
+  *out_len = 0;
+
+  if (cbs->len == 0) {
+    return 1;
+  }
+  *out_ptr = OPENSSL_memdup(cbs->data, cbs->len);
+  if (*out_ptr == NULL) {
+    return 0;
+  }
+  *out_len = cbs->len;
+  return 1;
+}
+
+int CBS_strdup(const CBS *cbs, char **out_ptr) {
+  if (*out_ptr != NULL) {
+    OPENSSL_free(*out_ptr);
+  }
+  *out_ptr = OPENSSL_strndup((const char*)cbs->data, cbs->len);
+  return (*out_ptr != NULL);
+}
+
+int CBS_contains_zero_byte(const CBS *cbs) {
+  return OPENSSL_memchr(cbs->data, 0, cbs->len) != NULL;
+}
+
+int CBS_mem_equal(const CBS *cbs, const uint8_t *data, size_t len) {
+  if (len != cbs->len) {
+    return 0;
+  }
+  return CRYPTO_memcmp(cbs->data, data, len) == 0;
+}
+
+static int cbs_get_u(CBS *cbs, uint64_t *out, size_t len) {
+  uint64_t result = 0;
+  const uint8_t *data;
+
+  if (!cbs_get(cbs, &data, len)) {
+    return 0;
+  }
+  for (size_t i = 0; i < len; i++) {
+    result <<= 8;
+    result |= data[i];
+  }
+  *out = result;
+  return 1;
+}
+
+int CBS_get_u8(CBS *cbs, uint8_t *out) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, 1)) {
+    return 0;
+  }
+  *out = *v;
+  return 1;
+}
+
+int CBS_get_u16(CBS *cbs, uint16_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 2)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u16le(CBS *cbs, uint16_t *out) {
+  if (!CBS_get_u16(cbs, out)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap2(*out);
+  return 1;
+}
+
+int CBS_get_u24(CBS *cbs, uint32_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 3)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u32(CBS *cbs, uint32_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 4)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u32le(CBS *cbs, uint32_t *out) {
+  if (!CBS_get_u32(cbs, out)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap4(*out);
+  return 1;
+}
+
+int CBS_get_u64(CBS *cbs, uint64_t *out) {
+  return cbs_get_u(cbs, out, 8);
+}
+
+int CBS_get_u64le(CBS *cbs, uint64_t *out) {
+  if (!cbs_get_u(cbs, out, 8)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap8(*out);
+  return 1;
+}
+
+int CBS_get_last_u8(CBS *cbs, uint8_t *out) {
+  if (cbs->len == 0) {
+    return 0;
+  }
+  *out = cbs->data[cbs->len - 1];
+  cbs->len--;
+  return 1;
+}
+
+int CBS_get_bytes(CBS *cbs, CBS *out, size_t len) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, len)) {
+    return 0;
+  }
+  CBS_init(out, v, len);
+  return 1;
+}
+
+int CBS_copy_bytes(CBS *cbs, uint8_t *out, size_t len) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(out, v, len);
+  return 1;
+}
+
+static int cbs_get_length_prefixed(CBS *cbs, CBS *out, size_t len_len) {
+  uint64_t len;
+  if (!cbs_get_u(cbs, &len, len_len)) {
+    return 0;
+  }
+  // If |len_len| <= 3 then we know that |len| will fit into a |size_t|, even on
+  // 32-bit systems.
+  assert(len_len <= 3);
+  return CBS_get_bytes(cbs, out, len);
+}
+
+int CBS_get_u8_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 1);
+}
+
+int CBS_get_u16_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 2);
+}
+
+int CBS_get_u24_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 3);
+}
+
+// parse_base128_integer reads a big-endian base-128 integer from |cbs| and sets
+// |*out| to the result. This is the encoding used in DER for both high tag
+// number form and OID components.
+static int parse_base128_integer(CBS *cbs, uint64_t *out) {
+  uint64_t v = 0;
+  uint8_t b;
+  do {
+    if (!CBS_get_u8(cbs, &b)) {
+      return 0;
+    }
+    if ((v >> (64 - 7)) != 0) {
+      // The value is too large.
+      return 0;
+    }
+    if (v == 0 && b == 0x80) {
+      // The value must be minimally encoded.
+      return 0;
+    }
+    v = (v << 7) | (b & 0x7f);
+
+    // Values end at an octet with the high bit cleared.
+  } while (b & 0x80);
+
+  *out = v;
+  return 1;
+}
+
+static int parse_asn1_tag(CBS *cbs, unsigned *out) {
+  uint8_t tag_byte;
+  if (!CBS_get_u8(cbs, &tag_byte)) {
+    return 0;
+  }
+
+  // ITU-T X.690 section 8.1.2.3 specifies the format for identifiers with a tag
+  // number no greater than 30.
+  //
+  // If the number portion is 31 (0x1f, the largest value that fits in the
+  // allotted bits), then the tag is more than one byte long and the
+  // continuation bytes contain the tag number. This parser only supports tag
+  // numbers less than 31 (and thus single-byte tags).
+  unsigned tag = ((unsigned)tag_byte & 0xe0) << CBS_ASN1_TAG_SHIFT;
+  unsigned tag_number = tag_byte & 0x1f;
+  if (tag_number == 0x1f) {
+    uint64_t v;
+    if (!parse_base128_integer(cbs, &v) ||
+        // Check the tag number is within our supported bounds.
+        v > CBS_ASN1_TAG_NUMBER_MASK ||
+        // Small tag numbers should have used low tag number form.
+        v < 0x1f) {
+      return 0;
+    }
+    tag_number = (unsigned)v;
+  }
+
+  tag |= tag_number;
+
+  *out = tag;
+  return 1;
+}
+
+static int cbs_get_any_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                    size_t *out_header_len, int ber_ok) {
+  CBS header = *cbs;
+  CBS throwaway;
+
+  if (out == NULL) {
+    out = &throwaway;
+  }
+
+  unsigned tag;
+  if (!parse_asn1_tag(&header, &tag)) {
+    return 0;
+  }
+  if (out_tag != NULL) {
+    *out_tag = tag;
+  }
+
+  uint8_t length_byte;
+  if (!CBS_get_u8(&header, &length_byte)) {
+    return 0;
+  }
+
+  size_t header_len = CBS_len(cbs) - CBS_len(&header);
+
+  size_t len;
+  // The format for the length encoding is specified in ITU-T X.690 section
+  // 8.1.3.
+  if ((length_byte & 0x80) == 0) {
+    // Short form length.
+    len = ((size_t) length_byte) + header_len;
+    if (out_header_len != NULL) {
+      *out_header_len = header_len;
+    }
+  } else {
+    // The high bit indicate that this is the long form, while the next 7 bits
+    // encode the number of subsequent octets used to encode the length (ITU-T
+    // X.690 clause 8.1.3.5.b).
+    const size_t num_bytes = length_byte & 0x7f;
+    uint64_t len64;
+
+    if (ber_ok && (tag & CBS_ASN1_CONSTRUCTED) != 0 && num_bytes == 0) {
+      // indefinite length
+      if (out_header_len != NULL) {
+        *out_header_len = header_len;
+      }
+      return CBS_get_bytes(cbs, out, header_len);
+    }
+
+    // ITU-T X.690 clause 8.1.3.5.c specifies that the value 0xff shall not be
+    // used as the first byte of the length. If this parser encounters that
+    // value, num_bytes will be parsed as 127, which will fail the check below.
+    if (num_bytes == 0 || num_bytes > 4) {
+      return 0;
+    }
+    if (!cbs_get_u(&header, &len64, num_bytes)) {
+      return 0;
+    }
+    // ITU-T X.690 section 10.1 (DER length forms) requires encoding the length
+    // with the minimum number of octets.
+    if (len64 < 128) {
+      // Length should have used short-form encoding.
+      return 0;
+    }
+    if ((len64 >> ((num_bytes-1)*8)) == 0) {
+      // Length should have been at least one byte shorter.
+      return 0;
+    }
+    len = len64;
+    if (len + header_len + num_bytes < len) {
+      // Overflow.
+      return 0;
+    }
+    len += header_len + num_bytes;
+    if (out_header_len != NULL) {
+      *out_header_len = header_len + num_bytes;
+    }
+  }
+
+  return CBS_get_bytes(cbs, out, len);
+}
+
+int CBS_get_any_asn1(CBS *cbs, CBS *out, unsigned *out_tag) {
+  size_t header_len;
+  if (!CBS_get_any_asn1_element(cbs, out, out_tag, &header_len)) {
+    return 0;
+  }
+
+  if (!CBS_skip(out, header_len)) {
+    assert(0);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_get_any_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                    size_t *out_header_len) {
+  return cbs_get_any_asn1_element(cbs, out, out_tag, out_header_len,
+                                  0 /* DER only */);
+}
+
+int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                 size_t *out_header_len) {
+  return cbs_get_any_asn1_element(cbs, out, out_tag, out_header_len,
+                                  1 /* BER allowed */);
+}
+
+static int cbs_get_asn1(CBS *cbs, CBS *out, unsigned tag_value,
+                        int skip_header) {
+  size_t header_len;
+  unsigned tag;
+  CBS throwaway;
+
+  if (out == NULL) {
+    out = &throwaway;
+  }
+
+  if (!CBS_get_any_asn1_element(cbs, out, &tag, &header_len) ||
+      tag != tag_value) {
+    return 0;
+  }
+
+  if (skip_header && !CBS_skip(out, header_len)) {
+    assert(0);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value) {
+  return cbs_get_asn1(cbs, out, tag_value, 1 /* skip header */);
+}
+
+int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value) {
+  return cbs_get_asn1(cbs, out, tag_value, 0 /* include header */);
+}
+
+int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value) {
+  if (CBS_len(cbs) < 1) {
+    return 0;
+  }
+
+  CBS copy = *cbs;
+  unsigned actual_tag;
+  return parse_asn1_tag(&copy, &actual_tag) && tag_value == actual_tag;
+}
+
+int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+
+  *out = 0;
+  const uint8_t *data = CBS_data(&bytes);
+  size_t len = CBS_len(&bytes);
+
+  if (len == 0) {
+    // An INTEGER is encoded with at least one octet.
+    return 0;
+  }
+
+  if ((data[0] & 0x80) != 0) {
+    // Negative number.
+    return 0;
+  }
+
+  if (data[0] == 0 && len > 1 && (data[1] & 0x80) == 0) {
+    // Extra leading zeros.
+    return 0;
+  }
+
+  for (size_t i = 0; i < len; i++) {
+    if ((*out >> 56) != 0) {
+      // Too large to represent as a uint64_t.
+      return 0;
+    }
+    *out <<= 8;
+    *out |= data[i];
+  }
+
+  return 1;
+}
+
+int CBS_get_asn1_int64(CBS *cbs, int64_t *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+  const uint8_t *data = CBS_data(&bytes);
+  const size_t len = CBS_len(&bytes);
+
+  if (len == 0 || len > sizeof(int64_t)) {
+    // An INTEGER is encoded with at least one octet.
+    return 0;
+  }
+  if (len > 1) {
+    if (data[0] == 0 && (data[1] & 0x80) == 0) {
+      return 0;  // Extra leading zeros.
+    }
+    if (data[0] == 0xff && (data[1] & 0x80) != 0) {
+      return 0;  // Extra leading 0xff.
+    }
+  }
+
+  union {
+    int64_t i;
+    uint8_t bytes[sizeof(int64_t)];
+  } u;
+  const int is_negative = (data[0] & 0x80);
+  memset(u.bytes, is_negative ? 0xff : 0, sizeof(u.bytes));  // Sign-extend.
+  for (size_t i = 0; i < len; i++) {
+    u.bytes[i] = data[len - i - 1];
+  }
+  *out = u.i;
+  return 1;
+}
+
+int CBS_get_asn1_bool(CBS *cbs, int *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_BOOLEAN) ||
+      CBS_len(&bytes) != 1) {
+    return 0;
+  }
+
+  const uint8_t value = *CBS_data(&bytes);
+  if (value != 0 && value != 0xff) {
+    return 0;
+  }
+
+  *out = !!value;
+  return 1;
+}
+
+int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present, unsigned tag) {
+  int present = 0;
+
+  if (CBS_peek_asn1_tag(cbs, tag)) {
+    if (!CBS_get_asn1(cbs, out, tag)) {
+      return 0;
+    }
+    present = 1;
+  }
+
+  if (out_present != NULL) {
+    *out_present = present;
+  }
+
+  return 1;
+}
+
+int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out, int *out_present,
+                                       unsigned tag) {
+  CBS child;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    assert(out);
+    if (!CBS_get_asn1(&child, out, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+  } else {
+    CBS_init(out, NULL, 0);
+  }
+  if (out_present) {
+    *out_present = present;
+  }
+  return 1;
+}
+
+int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out, unsigned tag,
+                                 uint64_t default_value) {
+  CBS child;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    if (!CBS_get_asn1_uint64(&child, out) ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+  } else {
+    *out = default_value;
+  }
+  return 1;
+}
+
+int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                               int default_value) {
+  CBS child, child2;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    uint8_t boolean;
+
+    if (!CBS_get_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
+        CBS_len(&child2) != 1 ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+
+    boolean = CBS_data(&child2)[0];
+    if (boolean == 0) {
+      *out = 0;
+    } else if (boolean == 0xff) {
+      *out = 1;
+    } else {
+      return 0;
+    }
+  } else {
+    *out = default_value;
+  }
+  return 1;
+}
+
+int CBS_is_valid_asn1_bitstring(const CBS *cbs) {
+  CBS in = *cbs;
+  uint8_t num_unused_bits;
+  if (!CBS_get_u8(&in, &num_unused_bits) ||
+      num_unused_bits > 7) {
+    return 0;
+  }
+
+  if (num_unused_bits == 0) {
+    return 1;
+  }
+
+  // All num_unused_bits bits must exist and be zeros.
+  uint8_t last;
+  if (!CBS_get_last_u8(&in, &last) ||
+      (last & ((1 << num_unused_bits) - 1)) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_asn1_bitstring_has_bit(const CBS *cbs, unsigned bit) {
+  if (!CBS_is_valid_asn1_bitstring(cbs)) {
+    return 0;
+  }
+
+  const unsigned byte_num = (bit >> 3) + 1;
+  const unsigned bit_num = 7 - (bit & 7);
+
+  // Unused bits are zero, and this function does not distinguish between
+  // missing and unset bits. Thus it is sufficient to do a byte-level length
+  // check.
+  return byte_num < CBS_len(cbs) &&
+         (CBS_data(cbs)[byte_num] & (1 << bit_num)) != 0;
+}
+
+static int add_decimal(CBB *out, uint64_t v) {
+  char buf[DECIMAL_SIZE(uint64_t) + 1];
+  BIO_snprintf(buf, sizeof(buf), "%" PRIu64, v);
+  return CBB_add_bytes(out, (const uint8_t *)buf, strlen(buf));
+}
+
+char *CBS_asn1_oid_to_text(const CBS *cbs) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 32)) {
+    goto err;
+  }
+
+  CBS copy = *cbs;
+  // The first component is 40 * value1 + value2, where value1 is 0, 1, or 2.
+  uint64_t v;
+  if (!parse_base128_integer(&copy, &v)) {
+    goto err;
+  }
+
+  if (v >= 80) {
+    if (!CBB_add_bytes(&cbb, (const uint8_t *)"2.", 2) ||
+        !add_decimal(&cbb, v - 80)) {
+      goto err;
+    }
+  } else if (!add_decimal(&cbb, v / 40) ||
+             !CBB_add_u8(&cbb, '.') ||
+             !add_decimal(&cbb, v % 40)) {
+    goto err;
+  }
+
+  while (CBS_len(&copy) != 0) {
+    if (!parse_base128_integer(&copy, &v) ||
+        !CBB_add_u8(&cbb, '.') ||
+        !add_decimal(&cbb, v)) {
+      goto err;
+    }
+  }
+
+  uint8_t *txt;
+  size_t txt_len;
+  if (!CBB_add_u8(&cbb, '\0') ||
+      !CBB_finish(&cbb, &txt, &txt_len)) {
+    goto err;
+  }
+
+  return (char *)txt;
+
+err:
+  CBB_cleanup(&cbb);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c.grpc_back
new file mode 100644
index 0000000..49d7003
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/cbs.c.grpc_back	
@@ -0,0 +1,688 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/mem.h>
+#include <openssl/bytestring.h>
+
+#include <assert.h>
+#include <inttypes.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+void CBS_init(CBS *cbs, const uint8_t *data, size_t len) {
+  cbs->data = data;
+  cbs->len = len;
+}
+
+static int cbs_get(CBS *cbs, const uint8_t **p, size_t n) {
+  if (cbs->len < n) {
+    return 0;
+  }
+
+  *p = cbs->data;
+  cbs->data += n;
+  cbs->len -= n;
+  return 1;
+}
+
+int CBS_skip(CBS *cbs, size_t len) {
+  const uint8_t *dummy;
+  return cbs_get(cbs, &dummy, len);
+}
+
+const uint8_t *CBS_data(const CBS *cbs) {
+  return cbs->data;
+}
+
+size_t CBS_len(const CBS *cbs) {
+  return cbs->len;
+}
+
+int CBS_stow(const CBS *cbs, uint8_t **out_ptr, size_t *out_len) {
+  OPENSSL_free(*out_ptr);
+  *out_ptr = NULL;
+  *out_len = 0;
+
+  if (cbs->len == 0) {
+    return 1;
+  }
+  *out_ptr = OPENSSL_memdup(cbs->data, cbs->len);
+  if (*out_ptr == NULL) {
+    return 0;
+  }
+  *out_len = cbs->len;
+  return 1;
+}
+
+int CBS_strdup(const CBS *cbs, char **out_ptr) {
+  if (*out_ptr != NULL) {
+    OPENSSL_free(*out_ptr);
+  }
+  *out_ptr = OPENSSL_strndup((const char*)cbs->data, cbs->len);
+  return (*out_ptr != NULL);
+}
+
+int CBS_contains_zero_byte(const CBS *cbs) {
+  return OPENSSL_memchr(cbs->data, 0, cbs->len) != NULL;
+}
+
+int CBS_mem_equal(const CBS *cbs, const uint8_t *data, size_t len) {
+  if (len != cbs->len) {
+    return 0;
+  }
+  return CRYPTO_memcmp(cbs->data, data, len) == 0;
+}
+
+static int cbs_get_u(CBS *cbs, uint64_t *out, size_t len) {
+  uint64_t result = 0;
+  const uint8_t *data;
+
+  if (!cbs_get(cbs, &data, len)) {
+    return 0;
+  }
+  for (size_t i = 0; i < len; i++) {
+    result <<= 8;
+    result |= data[i];
+  }
+  *out = result;
+  return 1;
+}
+
+int CBS_get_u8(CBS *cbs, uint8_t *out) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, 1)) {
+    return 0;
+  }
+  *out = *v;
+  return 1;
+}
+
+int CBS_get_u16(CBS *cbs, uint16_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 2)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u16le(CBS *cbs, uint16_t *out) {
+  if (!CBS_get_u16(cbs, out)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap2(*out);
+  return 1;
+}
+
+int CBS_get_u24(CBS *cbs, uint32_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 3)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u32(CBS *cbs, uint32_t *out) {
+  uint64_t v;
+  if (!cbs_get_u(cbs, &v, 4)) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int CBS_get_u32le(CBS *cbs, uint32_t *out) {
+  if (!CBS_get_u32(cbs, out)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap4(*out);
+  return 1;
+}
+
+int CBS_get_u64(CBS *cbs, uint64_t *out) {
+  return cbs_get_u(cbs, out, 8);
+}
+
+int CBS_get_u64le(CBS *cbs, uint64_t *out) {
+  if (!cbs_get_u(cbs, out, 8)) {
+    return 0;
+  }
+  *out = CRYPTO_bswap8(*out);
+  return 1;
+}
+
+int CBS_get_last_u8(CBS *cbs, uint8_t *out) {
+  if (cbs->len == 0) {
+    return 0;
+  }
+  *out = cbs->data[cbs->len - 1];
+  cbs->len--;
+  return 1;
+}
+
+int CBS_get_bytes(CBS *cbs, CBS *out, size_t len) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, len)) {
+    return 0;
+  }
+  CBS_init(out, v, len);
+  return 1;
+}
+
+int CBS_copy_bytes(CBS *cbs, uint8_t *out, size_t len) {
+  const uint8_t *v;
+  if (!cbs_get(cbs, &v, len)) {
+    return 0;
+  }
+  OPENSSL_memcpy(out, v, len);
+  return 1;
+}
+
+static int cbs_get_length_prefixed(CBS *cbs, CBS *out, size_t len_len) {
+  uint64_t len;
+  if (!cbs_get_u(cbs, &len, len_len)) {
+    return 0;
+  }
+  // If |len_len| <= 3 then we know that |len| will fit into a |size_t|, even on
+  // 32-bit systems.
+  assert(len_len <= 3);
+  return CBS_get_bytes(cbs, out, len);
+}
+
+int CBS_get_u8_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 1);
+}
+
+int CBS_get_u16_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 2);
+}
+
+int CBS_get_u24_length_prefixed(CBS *cbs, CBS *out) {
+  return cbs_get_length_prefixed(cbs, out, 3);
+}
+
+// parse_base128_integer reads a big-endian base-128 integer from |cbs| and sets
+// |*out| to the result. This is the encoding used in DER for both high tag
+// number form and OID components.
+static int parse_base128_integer(CBS *cbs, uint64_t *out) {
+  uint64_t v = 0;
+  uint8_t b;
+  do {
+    if (!CBS_get_u8(cbs, &b)) {
+      return 0;
+    }
+    if ((v >> (64 - 7)) != 0) {
+      // The value is too large.
+      return 0;
+    }
+    if (v == 0 && b == 0x80) {
+      // The value must be minimally encoded.
+      return 0;
+    }
+    v = (v << 7) | (b & 0x7f);
+
+    // Values end at an octet with the high bit cleared.
+  } while (b & 0x80);
+
+  *out = v;
+  return 1;
+}
+
+static int parse_asn1_tag(CBS *cbs, unsigned *out) {
+  uint8_t tag_byte;
+  if (!CBS_get_u8(cbs, &tag_byte)) {
+    return 0;
+  }
+
+  // ITU-T X.690 section 8.1.2.3 specifies the format for identifiers with a tag
+  // number no greater than 30.
+  //
+  // If the number portion is 31 (0x1f, the largest value that fits in the
+  // allotted bits), then the tag is more than one byte long and the
+  // continuation bytes contain the tag number. This parser only supports tag
+  // numbers less than 31 (and thus single-byte tags).
+  unsigned tag = ((unsigned)tag_byte & 0xe0) << CBS_ASN1_TAG_SHIFT;
+  unsigned tag_number = tag_byte & 0x1f;
+  if (tag_number == 0x1f) {
+    uint64_t v;
+    if (!parse_base128_integer(cbs, &v) ||
+        // Check the tag number is within our supported bounds.
+        v > CBS_ASN1_TAG_NUMBER_MASK ||
+        // Small tag numbers should have used low tag number form.
+        v < 0x1f) {
+      return 0;
+    }
+    tag_number = (unsigned)v;
+  }
+
+  tag |= tag_number;
+
+  *out = tag;
+  return 1;
+}
+
+static int cbs_get_any_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                    size_t *out_header_len, int ber_ok) {
+  CBS header = *cbs;
+  CBS throwaway;
+
+  if (out == NULL) {
+    out = &throwaway;
+  }
+
+  unsigned tag;
+  if (!parse_asn1_tag(&header, &tag)) {
+    return 0;
+  }
+  if (out_tag != NULL) {
+    *out_tag = tag;
+  }
+
+  uint8_t length_byte;
+  if (!CBS_get_u8(&header, &length_byte)) {
+    return 0;
+  }
+
+  size_t header_len = CBS_len(cbs) - CBS_len(&header);
+
+  size_t len;
+  // The format for the length encoding is specified in ITU-T X.690 section
+  // 8.1.3.
+  if ((length_byte & 0x80) == 0) {
+    // Short form length.
+    len = ((size_t) length_byte) + header_len;
+    if (out_header_len != NULL) {
+      *out_header_len = header_len;
+    }
+  } else {
+    // The high bit indicate that this is the long form, while the next 7 bits
+    // encode the number of subsequent octets used to encode the length (ITU-T
+    // X.690 clause 8.1.3.5.b).
+    const size_t num_bytes = length_byte & 0x7f;
+    uint64_t len64;
+
+    if (ber_ok && (tag & CBS_ASN1_CONSTRUCTED) != 0 && num_bytes == 0) {
+      // indefinite length
+      if (out_header_len != NULL) {
+        *out_header_len = header_len;
+      }
+      return CBS_get_bytes(cbs, out, header_len);
+    }
+
+    // ITU-T X.690 clause 8.1.3.5.c specifies that the value 0xff shall not be
+    // used as the first byte of the length. If this parser encounters that
+    // value, num_bytes will be parsed as 127, which will fail the check below.
+    if (num_bytes == 0 || num_bytes > 4) {
+      return 0;
+    }
+    if (!cbs_get_u(&header, &len64, num_bytes)) {
+      return 0;
+    }
+    // ITU-T X.690 section 10.1 (DER length forms) requires encoding the length
+    // with the minimum number of octets.
+    if (len64 < 128) {
+      // Length should have used short-form encoding.
+      return 0;
+    }
+    if ((len64 >> ((num_bytes-1)*8)) == 0) {
+      // Length should have been at least one byte shorter.
+      return 0;
+    }
+    len = len64;
+    if (len + header_len + num_bytes < len) {
+      // Overflow.
+      return 0;
+    }
+    len += header_len + num_bytes;
+    if (out_header_len != NULL) {
+      *out_header_len = header_len + num_bytes;
+    }
+  }
+
+  return CBS_get_bytes(cbs, out, len);
+}
+
+int CBS_get_any_asn1(CBS *cbs, CBS *out, unsigned *out_tag) {
+  size_t header_len;
+  if (!CBS_get_any_asn1_element(cbs, out, out_tag, &header_len)) {
+    return 0;
+  }
+
+  if (!CBS_skip(out, header_len)) {
+    assert(0);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_get_any_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                    size_t *out_header_len) {
+  return cbs_get_any_asn1_element(cbs, out, out_tag, out_header_len,
+                                  0 /* DER only */);
+}
+
+int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out, unsigned *out_tag,
+                                 size_t *out_header_len) {
+  return cbs_get_any_asn1_element(cbs, out, out_tag, out_header_len,
+                                  1 /* BER allowed */);
+}
+
+static int cbs_get_asn1(CBS *cbs, CBS *out, unsigned tag_value,
+                        int skip_header) {
+  size_t header_len;
+  unsigned tag;
+  CBS throwaway;
+
+  if (out == NULL) {
+    out = &throwaway;
+  }
+
+  if (!CBS_get_any_asn1_element(cbs, out, &tag, &header_len) ||
+      tag != tag_value) {
+    return 0;
+  }
+
+  if (skip_header && !CBS_skip(out, header_len)) {
+    assert(0);
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value) {
+  return cbs_get_asn1(cbs, out, tag_value, 1 /* skip header */);
+}
+
+int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value) {
+  return cbs_get_asn1(cbs, out, tag_value, 0 /* include header */);
+}
+
+int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value) {
+  if (CBS_len(cbs) < 1) {
+    return 0;
+  }
+
+  CBS copy = *cbs;
+  unsigned actual_tag;
+  return parse_asn1_tag(&copy, &actual_tag) && tag_value == actual_tag;
+}
+
+int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+
+  *out = 0;
+  const uint8_t *data = CBS_data(&bytes);
+  size_t len = CBS_len(&bytes);
+
+  if (len == 0) {
+    // An INTEGER is encoded with at least one octet.
+    return 0;
+  }
+
+  if ((data[0] & 0x80) != 0) {
+    // Negative number.
+    return 0;
+  }
+
+  if (data[0] == 0 && len > 1 && (data[1] & 0x80) == 0) {
+    // Extra leading zeros.
+    return 0;
+  }
+
+  for (size_t i = 0; i < len; i++) {
+    if ((*out >> 56) != 0) {
+      // Too large to represent as a uint64_t.
+      return 0;
+    }
+    *out <<= 8;
+    *out |= data[i];
+  }
+
+  return 1;
+}
+
+int CBS_get_asn1_int64(CBS *cbs, int64_t *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_INTEGER)) {
+    return 0;
+  }
+  const uint8_t *data = CBS_data(&bytes);
+  const size_t len = CBS_len(&bytes);
+
+  if (len == 0 || len > sizeof(int64_t)) {
+    // An INTEGER is encoded with at least one octet.
+    return 0;
+  }
+  if (len > 1) {
+    if (data[0] == 0 && (data[1] & 0x80) == 0) {
+      return 0;  // Extra leading zeros.
+    }
+    if (data[0] == 0xff && (data[1] & 0x80) != 0) {
+      return 0;  // Extra leading 0xff.
+    }
+  }
+
+  union {
+    int64_t i;
+    uint8_t bytes[sizeof(int64_t)];
+  } u;
+  const int is_negative = (data[0] & 0x80);
+  memset(u.bytes, is_negative ? 0xff : 0, sizeof(u.bytes));  // Sign-extend.
+  for (size_t i = 0; i < len; i++) {
+    u.bytes[i] = data[len - i - 1];
+  }
+  *out = u.i;
+  return 1;
+}
+
+int CBS_get_asn1_bool(CBS *cbs, int *out) {
+  CBS bytes;
+  if (!CBS_get_asn1(cbs, &bytes, CBS_ASN1_BOOLEAN) ||
+      CBS_len(&bytes) != 1) {
+    return 0;
+  }
+
+  const uint8_t value = *CBS_data(&bytes);
+  if (value != 0 && value != 0xff) {
+    return 0;
+  }
+
+  *out = !!value;
+  return 1;
+}
+
+int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present, unsigned tag) {
+  int present = 0;
+
+  if (CBS_peek_asn1_tag(cbs, tag)) {
+    if (!CBS_get_asn1(cbs, out, tag)) {
+      return 0;
+    }
+    present = 1;
+  }
+
+  if (out_present != NULL) {
+    *out_present = present;
+  }
+
+  return 1;
+}
+
+int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out, int *out_present,
+                                       unsigned tag) {
+  CBS child;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    assert(out);
+    if (!CBS_get_asn1(&child, out, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+  } else {
+    CBS_init(out, NULL, 0);
+  }
+  if (out_present) {
+    *out_present = present;
+  }
+  return 1;
+}
+
+int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out, unsigned tag,
+                                 uint64_t default_value) {
+  CBS child;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    if (!CBS_get_asn1_uint64(&child, out) ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+  } else {
+    *out = default_value;
+  }
+  return 1;
+}
+
+int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                               int default_value) {
+  CBS child, child2;
+  int present;
+  if (!CBS_get_optional_asn1(cbs, &child, &present, tag)) {
+    return 0;
+  }
+  if (present) {
+    uint8_t boolean;
+
+    if (!CBS_get_asn1(&child, &child2, CBS_ASN1_BOOLEAN) ||
+        CBS_len(&child2) != 1 ||
+        CBS_len(&child) != 0) {
+      return 0;
+    }
+
+    boolean = CBS_data(&child2)[0];
+    if (boolean == 0) {
+      *out = 0;
+    } else if (boolean == 0xff) {
+      *out = 1;
+    } else {
+      return 0;
+    }
+  } else {
+    *out = default_value;
+  }
+  return 1;
+}
+
+int CBS_is_valid_asn1_bitstring(const CBS *cbs) {
+  CBS in = *cbs;
+  uint8_t num_unused_bits;
+  if (!CBS_get_u8(&in, &num_unused_bits) ||
+      num_unused_bits > 7) {
+    return 0;
+  }
+
+  if (num_unused_bits == 0) {
+    return 1;
+  }
+
+  // All num_unused_bits bits must exist and be zeros.
+  uint8_t last;
+  if (!CBS_get_last_u8(&in, &last) ||
+      (last & ((1 << num_unused_bits) - 1)) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int CBS_asn1_bitstring_has_bit(const CBS *cbs, unsigned bit) {
+  if (!CBS_is_valid_asn1_bitstring(cbs)) {
+    return 0;
+  }
+
+  const unsigned byte_num = (bit >> 3) + 1;
+  const unsigned bit_num = 7 - (bit & 7);
+
+  // Unused bits are zero, and this function does not distinguish between
+  // missing and unset bits. Thus it is sufficient to do a byte-level length
+  // check.
+  return byte_num < CBS_len(cbs) &&
+         (CBS_data(cbs)[byte_num] & (1 << bit_num)) != 0;
+}
+
+static int add_decimal(CBB *out, uint64_t v) {
+  char buf[DECIMAL_SIZE(uint64_t) + 1];
+  BIO_snprintf(buf, sizeof(buf), "%" PRIu64, v);
+  return CBB_add_bytes(out, (const uint8_t *)buf, strlen(buf));
+}
+
+char *CBS_asn1_oid_to_text(const CBS *cbs) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 32)) {
+    goto err;
+  }
+
+  CBS copy = *cbs;
+  // The first component is 40 * value1 + value2, where value1 is 0, 1, or 2.
+  uint64_t v;
+  if (!parse_base128_integer(&copy, &v)) {
+    goto err;
+  }
+
+  if (v >= 80) {
+    if (!CBB_add_bytes(&cbb, (const uint8_t *)"2.", 2) ||
+        !add_decimal(&cbb, v - 80)) {
+      goto err;
+    }
+  } else if (!add_decimal(&cbb, v / 40) ||
+             !CBB_add_u8(&cbb, '.') ||
+             !add_decimal(&cbb, v % 40)) {
+    goto err;
+  }
+
+  while (CBS_len(&copy) != 0) {
+    if (!parse_base128_integer(&copy, &v) ||
+        !CBB_add_u8(&cbb, '.') ||
+        !add_decimal(&cbb, v)) {
+      goto err;
+    }
+  }
+
+  uint8_t *txt;
+  size_t txt_len;
+  if (!CBB_add_u8(&cbb, '\0') ||
+      !CBB_finish(&cbb, &txt, &txt_len)) {
+    goto err;
+  }
+
+  return (char *)txt;
+
+err:
+  CBB_cleanup(&cbb);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h
new file mode 100644
index 0000000..d98c8fc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h	
@@ -0,0 +1,96 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_BYTESTRING_INTERNAL_H
+#define OPENSSL_HEADER_BYTESTRING_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CBS_asn1_ber_to_der reads a BER element from |in|. If it finds
+// indefinite-length elements or constructed strings then it converts the BER
+// data to DER, sets |out| to the converted contents and |*out_storage| to a
+// buffer which the caller must release with |OPENSSL_free|. Otherwise, it sets
+// |out| to the original BER element in |in| and |*out_storage| to NULL.
+// Additionally, |*in| will be advanced over the BER element.
+//
+// This function should successfully process any valid BER input, however it
+// will not convert all of BER's deviations from DER. BER is ambiguous between
+// implicitly-tagged SEQUENCEs of strings and implicitly-tagged constructed
+// strings. Implicitly-tagged strings must be parsed with
+// |CBS_get_ber_implicitly_tagged_string| instead of |CBS_get_asn1|. The caller
+// must also account for BER variations in the contents of a primitive.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBS_asn1_ber_to_der(CBS *in, CBS *out,
+                                       uint8_t **out_storage);
+
+// CBS_get_asn1_implicit_string parses a BER string of primitive type
+// |inner_tag| implicitly-tagged with |outer_tag|. It sets |out| to the
+// contents. If concatenation was needed, it sets |*out_storage| to a buffer
+// which the caller must release with |OPENSSL_free|. Otherwise, it sets
+// |*out_storage| to NULL.
+//
+// This function does not parse all of BER. It requires the string be
+// definite-length. Constructed strings are allowed, but all children of the
+// outermost element must be primitive. The caller should use
+// |CBS_asn1_ber_to_der| before running this function.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBS_get_asn1_implicit_string(CBS *in, CBS *out,
+                                                uint8_t **out_storage,
+                                                unsigned outer_tag,
+                                                unsigned inner_tag);
+
+// CBB_finish_i2d calls |CBB_finish| on |cbb| which must have been initialized
+// with |CBB_init|. If |outp| is not NULL then the result is written to |*outp|
+// and |*outp| is advanced just past the output. It returns the number of bytes
+// in the result, whether written or not, or a negative value on error. On
+// error, it calls |CBB_cleanup| on |cbb|.
+//
+// This function may be used to help implement legacy i2d ASN.1 functions.
+int CBB_finish_i2d(CBB *cbb, uint8_t **outp);
+
+
+// Unicode utilities.
+
+// The following functions read one Unicode code point from |cbs| with the
+// corresponding encoding and store it in |*out|. They return one on success and
+// zero on error.
+OPENSSL_EXPORT int cbs_get_utf8(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_latin1(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_ucs2_be(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_utf32_be(CBS *cbs, uint32_t *out);
+
+// cbb_get_utf8_len returns the number of bytes needed to represent |u| in
+// UTF-8.
+OPENSSL_EXPORT size_t cbb_get_utf8_len(uint32_t u);
+
+// The following functions encode |u| to |cbb| with the corresponding
+// encoding. They return one on success and zero on error.
+OPENSSL_EXPORT int cbb_add_utf8(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_latin1(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_ucs2_be(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_utf32_be(CBB *cbb, uint32_t u);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BYTESTRING_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h.grpc_back
new file mode 100644
index 0000000..7ef0e21
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/internal.h.grpc_back	
@@ -0,0 +1,96 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_BYTESTRING_INTERNAL_H
+#define OPENSSL_HEADER_BYTESTRING_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CBS_asn1_ber_to_der reads a BER element from |in|. If it finds
+// indefinite-length elements or constructed strings then it converts the BER
+// data to DER, sets |out| to the converted contents and |*out_storage| to a
+// buffer which the caller must release with |OPENSSL_free|. Otherwise, it sets
+// |out| to the original BER element in |in| and |*out_storage| to NULL.
+// Additionally, |*in| will be advanced over the BER element.
+//
+// This function should successfully process any valid BER input, however it
+// will not convert all of BER's deviations from DER. BER is ambiguous between
+// implicitly-tagged SEQUENCEs of strings and implicitly-tagged constructed
+// strings. Implicitly-tagged strings must be parsed with
+// |CBS_get_ber_implicitly_tagged_string| instead of |CBS_get_asn1|. The caller
+// must also account for BER variations in the contents of a primitive.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBS_asn1_ber_to_der(CBS *in, CBS *out,
+                                       uint8_t **out_storage);
+
+// CBS_get_asn1_implicit_string parses a BER string of primitive type
+// |inner_tag| implicitly-tagged with |outer_tag|. It sets |out| to the
+// contents. If concatenation was needed, it sets |*out_storage| to a buffer
+// which the caller must release with |OPENSSL_free|. Otherwise, it sets
+// |*out_storage| to NULL.
+//
+// This function does not parse all of BER. It requires the string be
+// definite-length. Constructed strings are allowed, but all children of the
+// outermost element must be primitive. The caller should use
+// |CBS_asn1_ber_to_der| before running this function.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBS_get_asn1_implicit_string(CBS *in, CBS *out,
+                                                uint8_t **out_storage,
+                                                unsigned outer_tag,
+                                                unsigned inner_tag);
+
+// CBB_finish_i2d calls |CBB_finish| on |cbb| which must have been initialized
+// with |CBB_init|. If |outp| is not NULL then the result is written to |*outp|
+// and |*outp| is advanced just past the output. It returns the number of bytes
+// in the result, whether written or not, or a negative value on error. On
+// error, it calls |CBB_cleanup| on |cbb|.
+//
+// This function may be used to help implement legacy i2d ASN.1 functions.
+int CBB_finish_i2d(CBB *cbb, uint8_t **outp);
+
+
+// Unicode utilities.
+
+// The following functions read one Unicode code point from |cbs| with the
+// corresponding encoding and store it in |*out|. They return one on success and
+// zero on error.
+OPENSSL_EXPORT int cbs_get_utf8(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_latin1(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_ucs2_be(CBS *cbs, uint32_t *out);
+OPENSSL_EXPORT int cbs_get_utf32_be(CBS *cbs, uint32_t *out);
+
+// cbb_get_utf8_len returns the number of bytes needed to represent |u| in
+// UTF-8.
+OPENSSL_EXPORT size_t cbb_get_utf8_len(uint32_t u);
+
+// The following functions encode |u| to |cbb| with the corresponding
+// encoding. They return one on success and zero on error.
+OPENSSL_EXPORT int cbb_add_utf8(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_latin1(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_ucs2_be(CBB *cbb, uint32_t u);
+OPENSSL_EXPORT int cbb_add_utf32_be(CBB *cbb, uint32_t u);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BYTESTRING_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c
new file mode 100644
index 0000000..0dba532
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c	
@@ -0,0 +1,155 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bytestring.h>
+
+#include "internal.h"
+
+
+static int is_valid_code_point(uint32_t v) {
+  // References in the following are to Unicode 9.0.0.
+  if (// The Unicode space runs from zero to 0x10ffff (3.4 D9).
+      v > 0x10ffff ||
+      // Values 0x...fffe, 0x...ffff, and 0xfdd0-0xfdef are permanently reserved
+      // (3.4 D14)
+      (v & 0xfffe) == 0xfffe ||
+      (v >= 0xfdd0 && v <= 0xfdef) ||
+      // Surrogate code points are invalid (3.2 C1).
+      (v >= 0xd800 && v <= 0xdfff)) {
+    return 0;
+  }
+  return 1;
+}
+
+// BOTTOM_BITS returns a byte with the bottom |n| bits set.
+#define BOTTOM_BITS(n) (uint8_t)((1u << (n)) - 1)
+
+// TOP_BITS returns a byte with the top |n| bits set.
+#define TOP_BITS(n) ((uint8_t)~BOTTOM_BITS(8 - (n)))
+
+int cbs_get_utf8(CBS *cbs, uint32_t *out) {
+  uint8_t c;
+  if (!CBS_get_u8(cbs, &c)) {
+    return 0;
+  }
+  if (c <= 0x7f) {
+    *out = c;
+    return 1;
+  }
+  uint32_t v, lower_bound;
+  size_t len;
+  if ((c & TOP_BITS(3)) == TOP_BITS(2)) {
+    v = c & BOTTOM_BITS(5);
+    len = 1;
+    lower_bound = 0x80;
+  } else if ((c & TOP_BITS(4)) == TOP_BITS(3)) {
+    v = c & BOTTOM_BITS(4);
+    len = 2;
+    lower_bound = 0x800;
+  } else if ((c & TOP_BITS(5)) == TOP_BITS(4)) {
+    v = c & BOTTOM_BITS(3);
+    len = 3;
+    lower_bound = 0x10000;
+  } else {
+    return 0;
+  }
+  for (size_t i = 0; i < len; i++) {
+    if (!CBS_get_u8(cbs, &c) ||
+        (c & TOP_BITS(2)) != TOP_BITS(1)) {
+      return 0;
+    }
+    v <<= 6;
+    v |= c & BOTTOM_BITS(6);
+  }
+  if (!is_valid_code_point(v) ||
+      v < lower_bound) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int cbs_get_latin1(CBS *cbs, uint32_t *out) {
+  uint8_t c;
+  if (!CBS_get_u8(cbs, &c)) {
+    return 0;
+  }
+  *out = c;
+  return 1;
+}
+
+int cbs_get_ucs2_be(CBS *cbs, uint32_t *out) {
+  // Note UCS-2 (used by BMPString) does not support surrogates.
+  uint16_t c;
+  if (!CBS_get_u16(cbs, &c) ||
+      !is_valid_code_point(c)) {
+    return 0;
+  }
+  *out = c;
+  return 1;
+}
+
+int cbs_get_utf32_be(CBS *cbs, uint32_t *out) {
+  return CBS_get_u32(cbs, out) && is_valid_code_point(*out);
+}
+
+size_t cbb_get_utf8_len(uint32_t u) {
+  if (u <= 0x7f) {
+    return 1;
+  }
+  if (u <= 0x7ff) {
+    return 2;
+  }
+  if (u <= 0xffff) {
+    return 3;
+  }
+  return 4;
+}
+
+int cbb_add_utf8(CBB *cbb, uint32_t u) {
+  if (!is_valid_code_point(u)) {
+    return 0;
+  }
+  if (u <= 0x7f) {
+    return CBB_add_u8(cbb, (uint8_t)u);
+  }
+  if (u <= 0x7ff) {
+    return CBB_add_u8(cbb, TOP_BITS(2) | (u >> 6)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  if (u <= 0xffff) {
+    return CBB_add_u8(cbb, TOP_BITS(3) | (u >> 12)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 6) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  if (u <= 0x10ffff) {
+    return CBB_add_u8(cbb, TOP_BITS(4) | (u >> 18)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 12) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 6) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  return 0;
+}
+
+int cbb_add_latin1(CBB *cbb, uint32_t u) {
+  return u <= 0xff && CBB_add_u8(cbb, (uint8_t)u);
+}
+
+int cbb_add_ucs2_be(CBB *cbb, uint32_t u) {
+  return u <= 0xffff && is_valid_code_point(u) && CBB_add_u16(cbb, (uint16_t)u);
+}
+
+int cbb_add_utf32_be(CBB *cbb, uint32_t u) {
+  return is_valid_code_point(u) && CBB_add_u32(cbb, u);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c.grpc_back
new file mode 100644
index 0000000..6f9467f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/bytestring/unicode.c.grpc_back	
@@ -0,0 +1,155 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bytestring.h>
+
+#include "internal.h"
+
+
+static int is_valid_code_point(uint32_t v) {
+  // References in the following are to Unicode 9.0.0.
+  if (// The Unicode space runs from zero to 0x10ffff (3.4 D9).
+      v > 0x10ffff ||
+      // Values 0x...fffe, 0x...ffff, and 0xfdd0-0xfdef are permanently reserved
+      // (3.4 D14)
+      (v & 0xfffe) == 0xfffe ||
+      (v >= 0xfdd0 && v <= 0xfdef) ||
+      // Surrogate code points are invalid (3.2 C1).
+      (v >= 0xd800 && v <= 0xdfff)) {
+    return 0;
+  }
+  return 1;
+}
+
+// BOTTOM_BITS returns a byte with the bottom |n| bits set.
+#define BOTTOM_BITS(n) (uint8_t)((1u << (n)) - 1)
+
+// TOP_BITS returns a byte with the top |n| bits set.
+#define TOP_BITS(n) ((uint8_t)~BOTTOM_BITS(8 - (n)))
+
+int cbs_get_utf8(CBS *cbs, uint32_t *out) {
+  uint8_t c;
+  if (!CBS_get_u8(cbs, &c)) {
+    return 0;
+  }
+  if (c <= 0x7f) {
+    *out = c;
+    return 1;
+  }
+  uint32_t v, lower_bound;
+  size_t len;
+  if ((c & TOP_BITS(3)) == TOP_BITS(2)) {
+    v = c & BOTTOM_BITS(5);
+    len = 1;
+    lower_bound = 0x80;
+  } else if ((c & TOP_BITS(4)) == TOP_BITS(3)) {
+    v = c & BOTTOM_BITS(4);
+    len = 2;
+    lower_bound = 0x800;
+  } else if ((c & TOP_BITS(5)) == TOP_BITS(4)) {
+    v = c & BOTTOM_BITS(3);
+    len = 3;
+    lower_bound = 0x10000;
+  } else {
+    return 0;
+  }
+  for (size_t i = 0; i < len; i++) {
+    if (!CBS_get_u8(cbs, &c) ||
+        (c & TOP_BITS(2)) != TOP_BITS(1)) {
+      return 0;
+    }
+    v <<= 6;
+    v |= c & BOTTOM_BITS(6);
+  }
+  if (!is_valid_code_point(v) ||
+      v < lower_bound) {
+    return 0;
+  }
+  *out = v;
+  return 1;
+}
+
+int cbs_get_latin1(CBS *cbs, uint32_t *out) {
+  uint8_t c;
+  if (!CBS_get_u8(cbs, &c)) {
+    return 0;
+  }
+  *out = c;
+  return 1;
+}
+
+int cbs_get_ucs2_be(CBS *cbs, uint32_t *out) {
+  // Note UCS-2 (used by BMPString) does not support surrogates.
+  uint16_t c;
+  if (!CBS_get_u16(cbs, &c) ||
+      !is_valid_code_point(c)) {
+    return 0;
+  }
+  *out = c;
+  return 1;
+}
+
+int cbs_get_utf32_be(CBS *cbs, uint32_t *out) {
+  return CBS_get_u32(cbs, out) && is_valid_code_point(*out);
+}
+
+size_t cbb_get_utf8_len(uint32_t u) {
+  if (u <= 0x7f) {
+    return 1;
+  }
+  if (u <= 0x7ff) {
+    return 2;
+  }
+  if (u <= 0xffff) {
+    return 3;
+  }
+  return 4;
+}
+
+int cbb_add_utf8(CBB *cbb, uint32_t u) {
+  if (!is_valid_code_point(u)) {
+    return 0;
+  }
+  if (u <= 0x7f) {
+    return CBB_add_u8(cbb, (uint8_t)u);
+  }
+  if (u <= 0x7ff) {
+    return CBB_add_u8(cbb, TOP_BITS(2) | (u >> 6)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  if (u <= 0xffff) {
+    return CBB_add_u8(cbb, TOP_BITS(3) | (u >> 12)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 6) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  if (u <= 0x10ffff) {
+    return CBB_add_u8(cbb, TOP_BITS(4) | (u >> 18)) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 12) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | ((u >> 6) & BOTTOM_BITS(6))) &&
+           CBB_add_u8(cbb, TOP_BITS(1) | (u & BOTTOM_BITS(6)));
+  }
+  return 0;
+}
+
+int cbb_add_latin1(CBB *cbb, uint32_t u) {
+  return u <= 0xff && CBB_add_u8(cbb, (uint8_t)u);
+}
+
+int cbb_add_ucs2_be(CBB *cbb, uint32_t u) {
+  return u <= 0xffff && is_valid_code_point(u) && CBB_add_u16(cbb, (uint16_t)u);
+}
+
+int cbb_add_utf32_be(CBB *cbb, uint32_t u) {
+  return is_valid_code_point(u) && CBB_add_u32(cbb, u);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c
new file mode 100644
index 0000000..0b382bf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c	
@@ -0,0 +1,184 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// Adapted from the public domain, estream code by D. Bernstein.
+
+#include <openssl_grpc/chacha.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/cpu.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+#define U8TO32_LITTLE(p)                              \
+  (((uint32_t)((p)[0])) | ((uint32_t)((p)[1]) << 8) | \
+   ((uint32_t)((p)[2]) << 16) | ((uint32_t)((p)[3]) << 24))
+
+// sigma contains the ChaCha constants, which happen to be an ASCII string.
+static const uint8_t sigma[16] = { 'e', 'x', 'p', 'a', 'n', 'd', ' ', '3',
+                                   '2', '-', 'b', 'y', 't', 'e', ' ', 'k' };
+
+#define ROTATE(v, n) (((v) << (n)) | ((v) >> (32 - (n))))
+
+// QUARTERROUND updates a, b, c, d with a ChaCha "quarter" round.
+#define QUARTERROUND(a, b, c, d)                \
+  x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a], 16); \
+  x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c], 12); \
+  x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a],  8); \
+  x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c],  7);
+
+void CRYPTO_hchacha20(uint8_t out[32], const uint8_t key[32],
+                      const uint8_t nonce[16]) {
+  uint32_t x[16];
+  OPENSSL_memcpy(x, sigma, sizeof(sigma));
+  OPENSSL_memcpy(&x[4], key, 32);
+  OPENSSL_memcpy(&x[12], nonce, 16);
+
+  for (size_t i = 0; i < 20; i += 2) {
+    QUARTERROUND(0, 4, 8, 12)
+    QUARTERROUND(1, 5, 9, 13)
+    QUARTERROUND(2, 6, 10, 14)
+    QUARTERROUND(3, 7, 11, 15)
+    QUARTERROUND(0, 5, 10, 15)
+    QUARTERROUND(1, 6, 11, 12)
+    QUARTERROUND(2, 7, 8, 13)
+    QUARTERROUND(3, 4, 9, 14)
+  }
+
+  OPENSSL_memcpy(out, &x[0], sizeof(uint32_t) * 4);
+  OPENSSL_memcpy(&out[16], &x[12], sizeof(uint32_t) * 4);
+}
+
+#if defined(CHACHA20_ASM)
+
+void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in, size_t in_len,
+                      const uint8_t key[32], const uint8_t nonce[12],
+                      uint32_t counter) {
+  assert(!buffers_alias(out, in_len, in, in_len) || in == out);
+
+  uint32_t counter_nonce[4];  counter_nonce[0] = counter;
+  counter_nonce[1] = U8TO32_LITTLE(nonce + 0);
+  counter_nonce[2] = U8TO32_LITTLE(nonce + 4);
+  counter_nonce[3] = U8TO32_LITTLE(nonce + 8);
+
+  const uint32_t *key_ptr = (const uint32_t *)key;
+#if !defined(OPENSSL_X86) && !defined(OPENSSL_X86_64)
+  // The assembly expects the key to be four-byte aligned.
+  uint32_t key_u32[8];
+  if ((((uintptr_t)key) & 3) != 0) {
+    key_u32[0] = U8TO32_LITTLE(key + 0);
+    key_u32[1] = U8TO32_LITTLE(key + 4);
+    key_u32[2] = U8TO32_LITTLE(key + 8);
+    key_u32[3] = U8TO32_LITTLE(key + 12);
+    key_u32[4] = U8TO32_LITTLE(key + 16);
+    key_u32[5] = U8TO32_LITTLE(key + 20);
+    key_u32[6] = U8TO32_LITTLE(key + 24);
+    key_u32[7] = U8TO32_LITTLE(key + 28);
+
+    key_ptr = key_u32;
+  }
+#endif
+
+  ChaCha20_ctr32(out, in, in_len, key_ptr, counter_nonce);
+}
+
+#else
+
+#define U32TO8_LITTLE(p, v)    \
+  {                            \
+    (p)[0] = (v >> 0) & 0xff;  \
+    (p)[1] = (v >> 8) & 0xff;  \
+    (p)[2] = (v >> 16) & 0xff; \
+    (p)[3] = (v >> 24) & 0xff; \
+  }
+
+// chacha_core performs 20 rounds of ChaCha on the input words in
+// |input| and writes the 64 output bytes to |output|.
+static void chacha_core(uint8_t output[64], const uint32_t input[16]) {
+  uint32_t x[16];
+  int i;
+
+  OPENSSL_memcpy(x, input, sizeof(uint32_t) * 16);
+  for (i = 20; i > 0; i -= 2) {
+    QUARTERROUND(0, 4, 8, 12)
+    QUARTERROUND(1, 5, 9, 13)
+    QUARTERROUND(2, 6, 10, 14)
+    QUARTERROUND(3, 7, 11, 15)
+    QUARTERROUND(0, 5, 10, 15)
+    QUARTERROUND(1, 6, 11, 12)
+    QUARTERROUND(2, 7, 8, 13)
+    QUARTERROUND(3, 4, 9, 14)
+  }
+
+  for (i = 0; i < 16; ++i) {
+    x[i] += input[i];
+  }
+  for (i = 0; i < 16; ++i) {
+    U32TO8_LITTLE(output + 4 * i, x[i]);
+  }
+}
+
+void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in, size_t in_len,
+                      const uint8_t key[32], const uint8_t nonce[12],
+                      uint32_t counter) {
+  assert(!buffers_alias(out, in_len, in, in_len) || in == out);
+
+  uint32_t input[16];
+  uint8_t buf[64];
+  size_t todo, i;
+
+  input[0] = U8TO32_LITTLE(sigma + 0);
+  input[1] = U8TO32_LITTLE(sigma + 4);
+  input[2] = U8TO32_LITTLE(sigma + 8);
+  input[3] = U8TO32_LITTLE(sigma + 12);
+
+  input[4] = U8TO32_LITTLE(key + 0);
+  input[5] = U8TO32_LITTLE(key + 4);
+  input[6] = U8TO32_LITTLE(key + 8);
+  input[7] = U8TO32_LITTLE(key + 12);
+
+  input[8] = U8TO32_LITTLE(key + 16);
+  input[9] = U8TO32_LITTLE(key + 20);
+  input[10] = U8TO32_LITTLE(key + 24);
+  input[11] = U8TO32_LITTLE(key + 28);
+
+  input[12] = counter;
+  input[13] = U8TO32_LITTLE(nonce + 0);
+  input[14] = U8TO32_LITTLE(nonce + 4);
+  input[15] = U8TO32_LITTLE(nonce + 8);
+
+  while (in_len > 0) {
+    todo = sizeof(buf);
+    if (in_len < todo) {
+      todo = in_len;
+    }
+
+    chacha_core(buf, input);
+    for (i = 0; i < todo; i++) {
+      out[i] = in[i] ^ buf[i];
+    }
+
+    out += todo;
+    in += todo;
+    in_len -= todo;
+
+    input[12]++;
+  }
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c.grpc_back
new file mode 100644
index 0000000..b539f99
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/chacha.c.grpc_back	
@@ -0,0 +1,184 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// Adapted from the public domain, estream code by D. Bernstein.
+
+#include <openssl/chacha.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/cpu.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+#define U8TO32_LITTLE(p)                              \
+  (((uint32_t)((p)[0])) | ((uint32_t)((p)[1]) << 8) | \
+   ((uint32_t)((p)[2]) << 16) | ((uint32_t)((p)[3]) << 24))
+
+// sigma contains the ChaCha constants, which happen to be an ASCII string.
+static const uint8_t sigma[16] = { 'e', 'x', 'p', 'a', 'n', 'd', ' ', '3',
+                                   '2', '-', 'b', 'y', 't', 'e', ' ', 'k' };
+
+#define ROTATE(v, n) (((v) << (n)) | ((v) >> (32 - (n))))
+
+// QUARTERROUND updates a, b, c, d with a ChaCha "quarter" round.
+#define QUARTERROUND(a, b, c, d)                \
+  x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a], 16); \
+  x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c], 12); \
+  x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a],  8); \
+  x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c],  7);
+
+void CRYPTO_hchacha20(uint8_t out[32], const uint8_t key[32],
+                      const uint8_t nonce[16]) {
+  uint32_t x[16];
+  OPENSSL_memcpy(x, sigma, sizeof(sigma));
+  OPENSSL_memcpy(&x[4], key, 32);
+  OPENSSL_memcpy(&x[12], nonce, 16);
+
+  for (size_t i = 0; i < 20; i += 2) {
+    QUARTERROUND(0, 4, 8, 12)
+    QUARTERROUND(1, 5, 9, 13)
+    QUARTERROUND(2, 6, 10, 14)
+    QUARTERROUND(3, 7, 11, 15)
+    QUARTERROUND(0, 5, 10, 15)
+    QUARTERROUND(1, 6, 11, 12)
+    QUARTERROUND(2, 7, 8, 13)
+    QUARTERROUND(3, 4, 9, 14)
+  }
+
+  OPENSSL_memcpy(out, &x[0], sizeof(uint32_t) * 4);
+  OPENSSL_memcpy(&out[16], &x[12], sizeof(uint32_t) * 4);
+}
+
+#if defined(CHACHA20_ASM)
+
+void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in, size_t in_len,
+                      const uint8_t key[32], const uint8_t nonce[12],
+                      uint32_t counter) {
+  assert(!buffers_alias(out, in_len, in, in_len) || in == out);
+
+  uint32_t counter_nonce[4];  counter_nonce[0] = counter;
+  counter_nonce[1] = U8TO32_LITTLE(nonce + 0);
+  counter_nonce[2] = U8TO32_LITTLE(nonce + 4);
+  counter_nonce[3] = U8TO32_LITTLE(nonce + 8);
+
+  const uint32_t *key_ptr = (const uint32_t *)key;
+#if !defined(OPENSSL_X86) && !defined(OPENSSL_X86_64)
+  // The assembly expects the key to be four-byte aligned.
+  uint32_t key_u32[8];
+  if ((((uintptr_t)key) & 3) != 0) {
+    key_u32[0] = U8TO32_LITTLE(key + 0);
+    key_u32[1] = U8TO32_LITTLE(key + 4);
+    key_u32[2] = U8TO32_LITTLE(key + 8);
+    key_u32[3] = U8TO32_LITTLE(key + 12);
+    key_u32[4] = U8TO32_LITTLE(key + 16);
+    key_u32[5] = U8TO32_LITTLE(key + 20);
+    key_u32[6] = U8TO32_LITTLE(key + 24);
+    key_u32[7] = U8TO32_LITTLE(key + 28);
+
+    key_ptr = key_u32;
+  }
+#endif
+
+  ChaCha20_ctr32(out, in, in_len, key_ptr, counter_nonce);
+}
+
+#else
+
+#define U32TO8_LITTLE(p, v)    \
+  {                            \
+    (p)[0] = (v >> 0) & 0xff;  \
+    (p)[1] = (v >> 8) & 0xff;  \
+    (p)[2] = (v >> 16) & 0xff; \
+    (p)[3] = (v >> 24) & 0xff; \
+  }
+
+// chacha_core performs 20 rounds of ChaCha on the input words in
+// |input| and writes the 64 output bytes to |output|.
+static void chacha_core(uint8_t output[64], const uint32_t input[16]) {
+  uint32_t x[16];
+  int i;
+
+  OPENSSL_memcpy(x, input, sizeof(uint32_t) * 16);
+  for (i = 20; i > 0; i -= 2) {
+    QUARTERROUND(0, 4, 8, 12)
+    QUARTERROUND(1, 5, 9, 13)
+    QUARTERROUND(2, 6, 10, 14)
+    QUARTERROUND(3, 7, 11, 15)
+    QUARTERROUND(0, 5, 10, 15)
+    QUARTERROUND(1, 6, 11, 12)
+    QUARTERROUND(2, 7, 8, 13)
+    QUARTERROUND(3, 4, 9, 14)
+  }
+
+  for (i = 0; i < 16; ++i) {
+    x[i] += input[i];
+  }
+  for (i = 0; i < 16; ++i) {
+    U32TO8_LITTLE(output + 4 * i, x[i]);
+  }
+}
+
+void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in, size_t in_len,
+                      const uint8_t key[32], const uint8_t nonce[12],
+                      uint32_t counter) {
+  assert(!buffers_alias(out, in_len, in, in_len) || in == out);
+
+  uint32_t input[16];
+  uint8_t buf[64];
+  size_t todo, i;
+
+  input[0] = U8TO32_LITTLE(sigma + 0);
+  input[1] = U8TO32_LITTLE(sigma + 4);
+  input[2] = U8TO32_LITTLE(sigma + 8);
+  input[3] = U8TO32_LITTLE(sigma + 12);
+
+  input[4] = U8TO32_LITTLE(key + 0);
+  input[5] = U8TO32_LITTLE(key + 4);
+  input[6] = U8TO32_LITTLE(key + 8);
+  input[7] = U8TO32_LITTLE(key + 12);
+
+  input[8] = U8TO32_LITTLE(key + 16);
+  input[9] = U8TO32_LITTLE(key + 20);
+  input[10] = U8TO32_LITTLE(key + 24);
+  input[11] = U8TO32_LITTLE(key + 28);
+
+  input[12] = counter;
+  input[13] = U8TO32_LITTLE(nonce + 0);
+  input[14] = U8TO32_LITTLE(nonce + 4);
+  input[15] = U8TO32_LITTLE(nonce + 8);
+
+  while (in_len > 0) {
+    todo = sizeof(buf);
+    if (in_len < todo) {
+      todo = in_len;
+    }
+
+    chacha_core(buf, input);
+    for (i = 0; i < todo; i++) {
+      out[i] = in[i] ^ buf[i];
+    }
+
+    out += todo;
+    in += todo;
+    in_len -= todo;
+
+    input[12]++;
+  }
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h
new file mode 100644
index 0000000..5dbb97b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h	
@@ -0,0 +1,45 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_INTERNAL
+#define OPENSSL_HEADER_CHACHA_INTERNAL
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CRYPTO_hchacha20 computes the HChaCha20 function, which should only be used
+// as part of XChaCha20.
+void CRYPTO_hchacha20(uint8_t out[32], const uint8_t key[32],
+                      const uint8_t nonce[16]);
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define CHACHA20_ASM
+
+// ChaCha20_ctr32 is defined in asm/chacha-*.pl.
+void ChaCha20_ctr32(uint8_t *out, const uint8_t *in, size_t in_len,
+                    const uint32_t key[8], const uint32_t counter[4]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CHACHA_INTERNAL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h.grpc_back
new file mode 100644
index 0000000..1435e3b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/chacha/internal.h.grpc_back	
@@ -0,0 +1,45 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_INTERNAL
+#define OPENSSL_HEADER_CHACHA_INTERNAL
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CRYPTO_hchacha20 computes the HChaCha20 function, which should only be used
+// as part of XChaCha20.
+void CRYPTO_hchacha20(uint8_t out[32], const uint8_t key[32],
+                      const uint8_t nonce[16]);
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define CHACHA20_ASM
+
+// ChaCha20_ctr32 is defined in asm/chacha-*.pl.
+void ChaCha20_ctr32(uint8_t *out, const uint8_t *in, size_t in_len,
+                    const uint32_t key[8], const uint32_t counter[4]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CHACHA_INTERNAL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c
new file mode 100644
index 0000000..4bfb52a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c	
@@ -0,0 +1,143 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+const EVP_CIPHER *EVP_get_cipherbynid(int nid) {
+  switch (nid) {
+    case NID_rc2_cbc:
+      return EVP_rc2_cbc();
+    case NID_rc2_40_cbc:
+      return EVP_rc2_40_cbc();
+    case NID_des_ede3_cbc:
+      return EVP_des_ede3_cbc();
+    case NID_des_ede_cbc:
+      return EVP_des_cbc();
+    case NID_aes_128_cbc:
+      return EVP_aes_128_cbc();
+    case NID_aes_192_cbc:
+      return EVP_aes_192_cbc();
+    case NID_aes_256_cbc:
+      return EVP_aes_256_cbc();
+    default:
+      return NULL;
+  }
+}
+
+const EVP_CIPHER *EVP_get_cipherbyname(const char *name) {
+  if (OPENSSL_strcasecmp(name, "rc4") == 0) {
+    return EVP_rc4();
+  } else if (OPENSSL_strcasecmp(name, "des-cbc") == 0) {
+    return EVP_des_cbc();
+  } else if (OPENSSL_strcasecmp(name, "des-ede3-cbc") == 0 ||
+             // This is not a name used by OpenSSL, but tcpdump registers it
+             // with |EVP_add_cipher_alias|. Our |EVP_add_cipher_alias| is a
+             // no-op, so we support the name here.
+             OPENSSL_strcasecmp(name, "3des") == 0) {
+    return EVP_des_ede3_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-cbc") == 0) {
+    return EVP_aes_128_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-cbc") == 0) {
+    return EVP_aes_192_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-cbc") == 0) {
+    return EVP_aes_256_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ctr") == 0) {
+    return EVP_aes_128_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ctr") == 0) {
+    return EVP_aes_192_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ctr") == 0) {
+    return EVP_aes_256_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ecb") == 0) {
+    return EVP_aes_128_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ecb") == 0) {
+    return EVP_aes_192_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ecb") == 0) {
+    return EVP_aes_256_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-gcm") == 0) {
+    return EVP_aes_128_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-gcm") == 0) {
+    return EVP_aes_192_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-gcm") == 0) {
+    return EVP_aes_256_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ofb") == 0) {
+    return EVP_aes_128_ofb();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ofb") == 0) {
+    return EVP_aes_192_ofb();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ofb") == 0) {
+    return EVP_aes_256_ofb();
+  } else if (OPENSSL_strcasecmp(name, "des-ecb") == 0) {
+    return EVP_des_ecb();
+  } else if (OPENSSL_strcasecmp(name, "des-ede") == 0) {
+    return EVP_des_ede();
+  } else if (OPENSSL_strcasecmp(name, "des-ede-cbc") == 0) {
+    return EVP_des_ede_cbc();
+  } else if (OPENSSL_strcasecmp(name, "rc2-cbc") == 0) {
+    return EVP_rc2_cbc();
+  }
+
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c.grpc_back
new file mode 100644
index 0000000..b132265
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/cipher_extra.c.grpc_back	
@@ -0,0 +1,143 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+const EVP_CIPHER *EVP_get_cipherbynid(int nid) {
+  switch (nid) {
+    case NID_rc2_cbc:
+      return EVP_rc2_cbc();
+    case NID_rc2_40_cbc:
+      return EVP_rc2_40_cbc();
+    case NID_des_ede3_cbc:
+      return EVP_des_ede3_cbc();
+    case NID_des_ede_cbc:
+      return EVP_des_cbc();
+    case NID_aes_128_cbc:
+      return EVP_aes_128_cbc();
+    case NID_aes_192_cbc:
+      return EVP_aes_192_cbc();
+    case NID_aes_256_cbc:
+      return EVP_aes_256_cbc();
+    default:
+      return NULL;
+  }
+}
+
+const EVP_CIPHER *EVP_get_cipherbyname(const char *name) {
+  if (OPENSSL_strcasecmp(name, "rc4") == 0) {
+    return EVP_rc4();
+  } else if (OPENSSL_strcasecmp(name, "des-cbc") == 0) {
+    return EVP_des_cbc();
+  } else if (OPENSSL_strcasecmp(name, "des-ede3-cbc") == 0 ||
+             // This is not a name used by OpenSSL, but tcpdump registers it
+             // with |EVP_add_cipher_alias|. Our |EVP_add_cipher_alias| is a
+             // no-op, so we support the name here.
+             OPENSSL_strcasecmp(name, "3des") == 0) {
+    return EVP_des_ede3_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-cbc") == 0) {
+    return EVP_aes_128_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-cbc") == 0) {
+    return EVP_aes_192_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-cbc") == 0) {
+    return EVP_aes_256_cbc();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ctr") == 0) {
+    return EVP_aes_128_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ctr") == 0) {
+    return EVP_aes_192_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ctr") == 0) {
+    return EVP_aes_256_ctr();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ecb") == 0) {
+    return EVP_aes_128_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ecb") == 0) {
+    return EVP_aes_192_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ecb") == 0) {
+    return EVP_aes_256_ecb();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-gcm") == 0) {
+    return EVP_aes_128_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-gcm") == 0) {
+    return EVP_aes_192_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-gcm") == 0) {
+    return EVP_aes_256_gcm();
+  } else if (OPENSSL_strcasecmp(name, "aes-128-ofb") == 0) {
+    return EVP_aes_128_ofb();
+  } else if (OPENSSL_strcasecmp(name, "aes-192-ofb") == 0) {
+    return EVP_aes_192_ofb();
+  } else if (OPENSSL_strcasecmp(name, "aes-256-ofb") == 0) {
+    return EVP_aes_256_ofb();
+  } else if (OPENSSL_strcasecmp(name, "des-ecb") == 0) {
+    return EVP_des_ecb();
+  } else if (OPENSSL_strcasecmp(name, "des-ede") == 0) {
+    return EVP_des_ede();
+  } else if (OPENSSL_strcasecmp(name, "des-ede-cbc") == 0) {
+    return EVP_des_ede_cbc();
+  } else if (OPENSSL_strcasecmp(name, "rc2-cbc") == 0) {
+    return EVP_rc2_cbc();
+  }
+
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c
new file mode 100644
index 0000000..05d2435
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c	
@@ -0,0 +1,152 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/mem.h>
+
+
+#define PKCS5_SALT_LEN 8
+
+int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+                   const uint8_t *salt, const uint8_t *data, size_t data_len,
+                   unsigned count, uint8_t *key, uint8_t *iv) {
+  EVP_MD_CTX c;
+  uint8_t md_buf[EVP_MAX_MD_SIZE];
+  unsigned niv, nkey, addmd = 0;
+  unsigned mds = 0, i;
+  int rv = 0;
+
+  nkey = type->key_len;
+  niv = type->iv_len;
+
+  assert(nkey <= EVP_MAX_KEY_LENGTH);
+  assert(niv <= EVP_MAX_IV_LENGTH);
+
+  if (data == NULL) {
+    return nkey;
+  }
+
+  EVP_MD_CTX_init(&c);
+  for (;;) {
+    if (!EVP_DigestInit_ex(&c, md, NULL)) {
+      return 0;
+    }
+    if (addmd++) {
+      if (!EVP_DigestUpdate(&c, md_buf, mds)) {
+        goto err;
+      }
+    }
+    if (!EVP_DigestUpdate(&c, data, data_len)) {
+      goto err;
+    }
+    if (salt != NULL) {
+      if (!EVP_DigestUpdate(&c, salt, PKCS5_SALT_LEN)) {
+        goto err;
+      }
+    }
+    if (!EVP_DigestFinal_ex(&c, md_buf, &mds)) {
+      goto err;
+    }
+
+    for (i = 1; i < count; i++) {
+      if (!EVP_DigestInit_ex(&c, md, NULL) ||
+          !EVP_DigestUpdate(&c, md_buf, mds) ||
+          !EVP_DigestFinal_ex(&c, md_buf, &mds)) {
+        goto err;
+      }
+    }
+
+    i = 0;
+    if (nkey) {
+      for (;;) {
+        if (nkey == 0 || i == mds) {
+          break;
+        }
+        if (key != NULL) {
+          *(key++) = md_buf[i];
+        }
+        nkey--;
+        i++;
+      }
+    }
+
+    if (niv && i != mds) {
+      for (;;) {
+        if (niv == 0 || i == mds) {
+          break;
+        }
+        if (iv != NULL) {
+          *(iv++) = md_buf[i];
+        }
+        niv--;
+        i++;
+      }
+    }
+    if (nkey == 0 && niv == 0) {
+      break;
+    }
+  }
+  rv = type->key_len;
+
+err:
+  EVP_MD_CTX_cleanup(&c);
+  OPENSSL_cleanse(md_buf, EVP_MAX_MD_SIZE);
+  return rv;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c.grpc_back
new file mode 100644
index 0000000..ff5ae06
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/derive_key.c.grpc_back	
@@ -0,0 +1,152 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+
+#include <assert.h>
+
+#include <openssl/digest.h>
+#include <openssl/mem.h>
+
+
+#define PKCS5_SALT_LEN 8
+
+int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+                   const uint8_t *salt, const uint8_t *data, size_t data_len,
+                   unsigned count, uint8_t *key, uint8_t *iv) {
+  EVP_MD_CTX c;
+  uint8_t md_buf[EVP_MAX_MD_SIZE];
+  unsigned niv, nkey, addmd = 0;
+  unsigned mds = 0, i;
+  int rv = 0;
+
+  nkey = type->key_len;
+  niv = type->iv_len;
+
+  assert(nkey <= EVP_MAX_KEY_LENGTH);
+  assert(niv <= EVP_MAX_IV_LENGTH);
+
+  if (data == NULL) {
+    return nkey;
+  }
+
+  EVP_MD_CTX_init(&c);
+  for (;;) {
+    if (!EVP_DigestInit_ex(&c, md, NULL)) {
+      return 0;
+    }
+    if (addmd++) {
+      if (!EVP_DigestUpdate(&c, md_buf, mds)) {
+        goto err;
+      }
+    }
+    if (!EVP_DigestUpdate(&c, data, data_len)) {
+      goto err;
+    }
+    if (salt != NULL) {
+      if (!EVP_DigestUpdate(&c, salt, PKCS5_SALT_LEN)) {
+        goto err;
+      }
+    }
+    if (!EVP_DigestFinal_ex(&c, md_buf, &mds)) {
+      goto err;
+    }
+
+    for (i = 1; i < count; i++) {
+      if (!EVP_DigestInit_ex(&c, md, NULL) ||
+          !EVP_DigestUpdate(&c, md_buf, mds) ||
+          !EVP_DigestFinal_ex(&c, md_buf, &mds)) {
+        goto err;
+      }
+    }
+
+    i = 0;
+    if (nkey) {
+      for (;;) {
+        if (nkey == 0 || i == mds) {
+          break;
+        }
+        if (key != NULL) {
+          *(key++) = md_buf[i];
+        }
+        nkey--;
+        i++;
+      }
+    }
+
+    if (niv && i != mds) {
+      for (;;) {
+        if (niv == 0 || i == mds) {
+          break;
+        }
+        if (iv != NULL) {
+          *(iv++) = md_buf[i];
+        }
+        niv--;
+        i++;
+      }
+    }
+    if (nkey == 0 && niv == 0) {
+      break;
+    }
+  }
+  rv = type->key_len;
+
+err:
+  EVP_MD_CTX_cleanup(&c);
+  OPENSSL_cleanse(md_buf, EVP_MAX_MD_SIZE);
+  return rv;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c
new file mode 100644
index 0000000..a13bc99
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c	
@@ -0,0 +1,447 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/aead.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+struct ccm128_context {
+  block128_f block;
+  ctr128_f ctr;
+  unsigned M, L;
+};
+
+struct ccm128_state {
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } nonce, cmac;
+};
+
+static int CRYPTO_ccm128_init(struct ccm128_context *ctx, const AES_KEY *key,
+                              block128_f block, ctr128_f ctr, unsigned M,
+                              unsigned L) {
+  if (M < 4 || M > 16 || (M & 1) != 0 || L < 2 || L > 8) {
+    return 0;
+  }
+  ctx->block = block;
+  ctx->ctr = ctr;
+  ctx->M = M;
+  ctx->L = L;
+  return 1;
+}
+
+static size_t CRYPTO_ccm128_max_input(const struct ccm128_context *ctx) {
+  return ctx->L >= sizeof(size_t) ? (size_t)-1
+                                  : (((size_t)1) << (ctx->L * 8)) - 1;
+}
+
+static int ccm128_init_state(const struct ccm128_context *ctx,
+                             struct ccm128_state *state, const AES_KEY *key,
+                             const uint8_t *nonce, size_t nonce_len,
+                             const uint8_t *aad, size_t aad_len,
+                             size_t plaintext_len) {
+  const block128_f block = ctx->block;
+  const unsigned M = ctx->M;
+  const unsigned L = ctx->L;
+
+  // |L| determines the expected |nonce_len| and the limit for |plaintext_len|.
+  if (plaintext_len > CRYPTO_ccm128_max_input(ctx) ||
+      nonce_len != 15 - L) {
+    return 0;
+  }
+
+  // Assemble the first block for computing the MAC.
+  OPENSSL_memset(state, 0, sizeof(*state));
+  state->nonce.c[0] = (uint8_t)((L - 1) | ((M - 2) / 2) << 3);
+  if (aad_len != 0) {
+    state->nonce.c[0] |= 0x40;  // Set AAD Flag
+  }
+  OPENSSL_memcpy(&state->nonce.c[1], nonce, nonce_len);
+  for (unsigned i = 0; i < L; i++) {
+    state->nonce.c[15 - i] = (uint8_t)(plaintext_len >> (8 * i));
+  }
+
+  (*block)(state->nonce.c, state->cmac.c, key);
+  size_t blocks = 1;
+
+  if (aad_len != 0) {
+    unsigned i;
+    // Cast to u64 to avoid the compiler complaining about invalid shifts.
+    uint64_t aad_len_u64 = aad_len;
+    if (aad_len_u64 < 0x10000 - 0x100) {
+      state->cmac.c[0] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[1] ^= (uint8_t)aad_len_u64;
+      i = 2;
+    } else if (aad_len_u64 <= 0xffffffff) {
+      state->cmac.c[0] ^= 0xff;
+      state->cmac.c[1] ^= 0xfe;
+      state->cmac.c[2] ^= (uint8_t)(aad_len_u64 >> 24);
+      state->cmac.c[3] ^= (uint8_t)(aad_len_u64 >> 16);
+      state->cmac.c[4] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[5] ^= (uint8_t)aad_len_u64;
+      i = 6;
+    } else {
+      state->cmac.c[0] ^= 0xff;
+      state->cmac.c[1] ^= 0xff;
+      state->cmac.c[2] ^= (uint8_t)(aad_len_u64 >> 56);
+      state->cmac.c[3] ^= (uint8_t)(aad_len_u64 >> 48);
+      state->cmac.c[4] ^= (uint8_t)(aad_len_u64 >> 40);
+      state->cmac.c[5] ^= (uint8_t)(aad_len_u64 >> 32);
+      state->cmac.c[6] ^= (uint8_t)(aad_len_u64 >> 24);
+      state->cmac.c[7] ^= (uint8_t)(aad_len_u64 >> 16);
+      state->cmac.c[8] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[9] ^= (uint8_t)aad_len_u64;
+      i = 10;
+    }
+
+    do {
+      for (; i < 16 && aad_len != 0; i++) {
+        state->cmac.c[i] ^= *aad;
+        aad++;
+        aad_len--;
+      }
+      (*block)(state->cmac.c, state->cmac.c, key);
+      blocks++;
+      i = 0;
+    } while (aad_len != 0);
+  }
+
+  // Per RFC 3610, section 2.6, the total number of block cipher operations done
+  // must not exceed 2^61. There are two block cipher operations remaining per
+  // message block, plus one block at the end to encrypt the MAC.
+  size_t remaining_blocks = 2 * ((plaintext_len + 15) / 16) + 1;
+  if (plaintext_len + 15 < plaintext_len ||
+      remaining_blocks + blocks < blocks ||
+      (uint64_t) remaining_blocks + blocks > UINT64_C(1) << 61) {
+    return 0;
+  }
+
+  // Assemble the first block for encrypting and decrypting. The bottom |L|
+  // bytes are replaced with a counter and all bit the encoding of |L| is
+  // cleared in the first byte.
+  state->nonce.c[0] &= 7;
+  return 1;
+}
+
+static int ccm128_encrypt(const struct ccm128_context *ctx,
+                          struct ccm128_state *state, const AES_KEY *key,
+                          uint8_t *out, const uint8_t *in, size_t len) {
+  // The counter for encryption begins at one.
+  for (unsigned i = 0; i < ctx->L; i++) {
+    state->nonce.c[15 - i] = 0;
+  }
+  state->nonce.c[15] = 1;
+
+  uint8_t partial_buf[16];
+  unsigned num = 0;
+  if (ctx->ctr != NULL) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, key, state->nonce.c, partial_buf,
+                                &num, ctx->ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, key, state->nonce.c, partial_buf, &num,
+                          ctx->block);
+  }
+  return 1;
+}
+
+static int ccm128_compute_mac(const struct ccm128_context *ctx,
+                              struct ccm128_state *state, const AES_KEY *key,
+                              uint8_t *out_tag, size_t tag_len,
+                              const uint8_t *in, size_t len) {
+  block128_f block = ctx->block;
+  if (tag_len != ctx->M) {
+    return 0;
+  }
+
+  // Incorporate |in| into the MAC.
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } tmp;
+  while (len >= 16) {
+    OPENSSL_memcpy(tmp.c, in, 16);
+    state->cmac.u[0] ^= tmp.u[0];
+    state->cmac.u[1] ^= tmp.u[1];
+    (*block)(state->cmac.c, state->cmac.c, key);
+    in += 16;
+    len -= 16;
+  }
+  if (len > 0) {
+    for (size_t i = 0; i < len; i++) {
+      state->cmac.c[i] ^= in[i];
+    }
+    (*block)(state->cmac.c, state->cmac.c, key);
+  }
+
+  // Encrypt the MAC with counter zero.
+  for (unsigned i = 0; i < ctx->L; i++) {
+    state->nonce.c[15 - i] = 0;
+  }
+  (*block)(state->nonce.c, tmp.c, key);
+  state->cmac.u[0] ^= tmp.u[0];
+  state->cmac.u[1] ^= tmp.u[1];
+
+  OPENSSL_memcpy(out_tag, state->cmac.c, tag_len);
+  return 1;
+}
+
+static int CRYPTO_ccm128_encrypt(const struct ccm128_context *ctx,
+                                 const AES_KEY *key, uint8_t *out,
+                                 uint8_t *out_tag, size_t tag_len,
+                                 const uint8_t *nonce, size_t nonce_len,
+                                 const uint8_t *in, size_t len,
+                                 const uint8_t *aad, size_t aad_len) {
+  struct ccm128_state state;
+  return ccm128_init_state(ctx, &state, key, nonce, nonce_len, aad, aad_len,
+                           len) &&
+         ccm128_compute_mac(ctx, &state, key, out_tag, tag_len, in, len) &&
+         ccm128_encrypt(ctx, &state, key, out, in, len);
+}
+
+static int CRYPTO_ccm128_decrypt(const struct ccm128_context *ctx,
+                                 const AES_KEY *key, uint8_t *out,
+                                 uint8_t *out_tag, size_t tag_len,
+                                 const uint8_t *nonce, size_t nonce_len,
+                                 const uint8_t *in, size_t len,
+                                 const uint8_t *aad, size_t aad_len) {
+  struct ccm128_state state;
+  return ccm128_init_state(ctx, &state, key, nonce, nonce_len, aad, aad_len,
+                           len) &&
+         ccm128_encrypt(ctx, &state, key, out, in, len) &&
+         ccm128_compute_mac(ctx, &state, key, out_tag, tag_len, out, len);
+}
+
+#define EVP_AEAD_AES_CCM_MAX_TAG_LEN 16
+
+struct aead_aes_ccm_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  struct ccm128_context ccm;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_ccm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_ccm_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_ccm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                             size_t key_len, size_t tag_len, unsigned M,
+                             unsigned L) {
+  assert(M == EVP_AEAD_max_overhead(ctx->aead));
+  assert(M == EVP_AEAD_max_tag_len(ctx->aead));
+  assert(15 - L == EVP_AEAD_nonce_length(ctx->aead));
+
+  if (key_len != EVP_AEAD_key_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = M;
+  }
+
+  if (tag_len != M) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_ccm_ctx *ccm_ctx = (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  block128_f block;
+  ctr128_f ctr = aes_ctr_set_key(&ccm_ctx->ks.ks, NULL, &block, key, key_len);
+  ctx->tag_len = tag_len;
+  if (!CRYPTO_ccm128_init(&ccm_ctx->ccm, &ccm_ctx->ks.ks, block, ctr, M, L)) {
+    OPENSSL_PUT_ERROR(CIPHER, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static void aead_aes_ccm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static int aead_aes_ccm_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ccm_ctx *ccm_ctx =
+      (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  if (in_len > CRYPTO_ccm128_max_input(&ccm_ctx->ccm)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (!CRYPTO_ccm128_encrypt(&ccm_ctx->ccm, &ccm_ctx->ks.ks, out, out_tag,
+                             ctx->tag_len, nonce, nonce_len, in, in_len, ad,
+                             ad_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  *out_tag_len = ctx->tag_len;
+  return 1;
+}
+
+static int aead_aes_ccm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                    const uint8_t *nonce, size_t nonce_len,
+                                    const uint8_t *in, size_t in_len,
+                                    const uint8_t *in_tag, size_t in_tag_len,
+                                    const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ccm_ctx *ccm_ctx =
+      (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  if (in_len > CRYPTO_ccm128_max_input(&ccm_ctx->ccm)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  uint8_t tag[EVP_AEAD_AES_CCM_MAX_TAG_LEN];
+  assert(ctx->tag_len <= EVP_AEAD_AES_CCM_MAX_TAG_LEN);
+  if (!CRYPTO_ccm128_decrypt(&ccm_ctx->ccm, &ccm_ctx->ks.ks, out, tag,
+                             ctx->tag_len, nonce, nonce_len, in, in_len, ad,
+                             ad_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aead_aes_ccm_bluetooth_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                       size_t key_len, size_t tag_len) {
+  return aead_aes_ccm_init(ctx, key, key_len, tag_len, 4, 2);
+}
+
+static const EVP_AEAD aead_aes_128_ccm_bluetooth = {
+    16,  // key length (AES-128)
+    13,  // nonce length
+    4,   // overhead
+    4,   // max tag length
+    0,   // seal_scatter_supports_extra_in
+
+    aead_aes_ccm_bluetooth_init,
+    NULL /* init_with_direction */,
+    aead_aes_ccm_cleanup,
+    NULL /* open */,
+    aead_aes_ccm_seal_scatter,
+    aead_aes_ccm_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth(void) {
+  return &aead_aes_128_ccm_bluetooth;
+}
+
+static int aead_aes_ccm_bluetooth_8_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                         size_t key_len, size_t tag_len) {
+  return aead_aes_ccm_init(ctx, key, key_len, tag_len, 8, 2);
+}
+
+static const EVP_AEAD aead_aes_128_ccm_bluetooth_8 = {
+    16,  // key length (AES-128)
+    13,  // nonce length
+    8,   // overhead
+    8,   // max tag length
+    0,   // seal_scatter_supports_extra_in
+
+    aead_aes_ccm_bluetooth_8_init,
+    NULL /* init_with_direction */,
+    aead_aes_ccm_cleanup,
+    NULL /* open */,
+    aead_aes_ccm_seal_scatter,
+    aead_aes_ccm_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth_8(void) {
+  return &aead_aes_128_ccm_bluetooth_8;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c.grpc_back
new file mode 100644
index 0000000..e9e9e16
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesccm.c.grpc_back	
@@ -0,0 +1,447 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/aead.h>
+
+#include <assert.h>
+
+#include <openssl/cpu.h>
+#include <openssl/cipher.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+struct ccm128_context {
+  block128_f block;
+  ctr128_f ctr;
+  unsigned M, L;
+};
+
+struct ccm128_state {
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } nonce, cmac;
+};
+
+static int CRYPTO_ccm128_init(struct ccm128_context *ctx, const AES_KEY *key,
+                              block128_f block, ctr128_f ctr, unsigned M,
+                              unsigned L) {
+  if (M < 4 || M > 16 || (M & 1) != 0 || L < 2 || L > 8) {
+    return 0;
+  }
+  ctx->block = block;
+  ctx->ctr = ctr;
+  ctx->M = M;
+  ctx->L = L;
+  return 1;
+}
+
+static size_t CRYPTO_ccm128_max_input(const struct ccm128_context *ctx) {
+  return ctx->L >= sizeof(size_t) ? (size_t)-1
+                                  : (((size_t)1) << (ctx->L * 8)) - 1;
+}
+
+static int ccm128_init_state(const struct ccm128_context *ctx,
+                             struct ccm128_state *state, const AES_KEY *key,
+                             const uint8_t *nonce, size_t nonce_len,
+                             const uint8_t *aad, size_t aad_len,
+                             size_t plaintext_len) {
+  const block128_f block = ctx->block;
+  const unsigned M = ctx->M;
+  const unsigned L = ctx->L;
+
+  // |L| determines the expected |nonce_len| and the limit for |plaintext_len|.
+  if (plaintext_len > CRYPTO_ccm128_max_input(ctx) ||
+      nonce_len != 15 - L) {
+    return 0;
+  }
+
+  // Assemble the first block for computing the MAC.
+  OPENSSL_memset(state, 0, sizeof(*state));
+  state->nonce.c[0] = (uint8_t)((L - 1) | ((M - 2) / 2) << 3);
+  if (aad_len != 0) {
+    state->nonce.c[0] |= 0x40;  // Set AAD Flag
+  }
+  OPENSSL_memcpy(&state->nonce.c[1], nonce, nonce_len);
+  for (unsigned i = 0; i < L; i++) {
+    state->nonce.c[15 - i] = (uint8_t)(plaintext_len >> (8 * i));
+  }
+
+  (*block)(state->nonce.c, state->cmac.c, key);
+  size_t blocks = 1;
+
+  if (aad_len != 0) {
+    unsigned i;
+    // Cast to u64 to avoid the compiler complaining about invalid shifts.
+    uint64_t aad_len_u64 = aad_len;
+    if (aad_len_u64 < 0x10000 - 0x100) {
+      state->cmac.c[0] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[1] ^= (uint8_t)aad_len_u64;
+      i = 2;
+    } else if (aad_len_u64 <= 0xffffffff) {
+      state->cmac.c[0] ^= 0xff;
+      state->cmac.c[1] ^= 0xfe;
+      state->cmac.c[2] ^= (uint8_t)(aad_len_u64 >> 24);
+      state->cmac.c[3] ^= (uint8_t)(aad_len_u64 >> 16);
+      state->cmac.c[4] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[5] ^= (uint8_t)aad_len_u64;
+      i = 6;
+    } else {
+      state->cmac.c[0] ^= 0xff;
+      state->cmac.c[1] ^= 0xff;
+      state->cmac.c[2] ^= (uint8_t)(aad_len_u64 >> 56);
+      state->cmac.c[3] ^= (uint8_t)(aad_len_u64 >> 48);
+      state->cmac.c[4] ^= (uint8_t)(aad_len_u64 >> 40);
+      state->cmac.c[5] ^= (uint8_t)(aad_len_u64 >> 32);
+      state->cmac.c[6] ^= (uint8_t)(aad_len_u64 >> 24);
+      state->cmac.c[7] ^= (uint8_t)(aad_len_u64 >> 16);
+      state->cmac.c[8] ^= (uint8_t)(aad_len_u64 >> 8);
+      state->cmac.c[9] ^= (uint8_t)aad_len_u64;
+      i = 10;
+    }
+
+    do {
+      for (; i < 16 && aad_len != 0; i++) {
+        state->cmac.c[i] ^= *aad;
+        aad++;
+        aad_len--;
+      }
+      (*block)(state->cmac.c, state->cmac.c, key);
+      blocks++;
+      i = 0;
+    } while (aad_len != 0);
+  }
+
+  // Per RFC 3610, section 2.6, the total number of block cipher operations done
+  // must not exceed 2^61. There are two block cipher operations remaining per
+  // message block, plus one block at the end to encrypt the MAC.
+  size_t remaining_blocks = 2 * ((plaintext_len + 15) / 16) + 1;
+  if (plaintext_len + 15 < plaintext_len ||
+      remaining_blocks + blocks < blocks ||
+      (uint64_t) remaining_blocks + blocks > UINT64_C(1) << 61) {
+    return 0;
+  }
+
+  // Assemble the first block for encrypting and decrypting. The bottom |L|
+  // bytes are replaced with a counter and all bit the encoding of |L| is
+  // cleared in the first byte.
+  state->nonce.c[0] &= 7;
+  return 1;
+}
+
+static int ccm128_encrypt(const struct ccm128_context *ctx,
+                          struct ccm128_state *state, const AES_KEY *key,
+                          uint8_t *out, const uint8_t *in, size_t len) {
+  // The counter for encryption begins at one.
+  for (unsigned i = 0; i < ctx->L; i++) {
+    state->nonce.c[15 - i] = 0;
+  }
+  state->nonce.c[15] = 1;
+
+  uint8_t partial_buf[16];
+  unsigned num = 0;
+  if (ctx->ctr != NULL) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, key, state->nonce.c, partial_buf,
+                                &num, ctx->ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, key, state->nonce.c, partial_buf, &num,
+                          ctx->block);
+  }
+  return 1;
+}
+
+static int ccm128_compute_mac(const struct ccm128_context *ctx,
+                              struct ccm128_state *state, const AES_KEY *key,
+                              uint8_t *out_tag, size_t tag_len,
+                              const uint8_t *in, size_t len) {
+  block128_f block = ctx->block;
+  if (tag_len != ctx->M) {
+    return 0;
+  }
+
+  // Incorporate |in| into the MAC.
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } tmp;
+  while (len >= 16) {
+    OPENSSL_memcpy(tmp.c, in, 16);
+    state->cmac.u[0] ^= tmp.u[0];
+    state->cmac.u[1] ^= tmp.u[1];
+    (*block)(state->cmac.c, state->cmac.c, key);
+    in += 16;
+    len -= 16;
+  }
+  if (len > 0) {
+    for (size_t i = 0; i < len; i++) {
+      state->cmac.c[i] ^= in[i];
+    }
+    (*block)(state->cmac.c, state->cmac.c, key);
+  }
+
+  // Encrypt the MAC with counter zero.
+  for (unsigned i = 0; i < ctx->L; i++) {
+    state->nonce.c[15 - i] = 0;
+  }
+  (*block)(state->nonce.c, tmp.c, key);
+  state->cmac.u[0] ^= tmp.u[0];
+  state->cmac.u[1] ^= tmp.u[1];
+
+  OPENSSL_memcpy(out_tag, state->cmac.c, tag_len);
+  return 1;
+}
+
+static int CRYPTO_ccm128_encrypt(const struct ccm128_context *ctx,
+                                 const AES_KEY *key, uint8_t *out,
+                                 uint8_t *out_tag, size_t tag_len,
+                                 const uint8_t *nonce, size_t nonce_len,
+                                 const uint8_t *in, size_t len,
+                                 const uint8_t *aad, size_t aad_len) {
+  struct ccm128_state state;
+  return ccm128_init_state(ctx, &state, key, nonce, nonce_len, aad, aad_len,
+                           len) &&
+         ccm128_compute_mac(ctx, &state, key, out_tag, tag_len, in, len) &&
+         ccm128_encrypt(ctx, &state, key, out, in, len);
+}
+
+static int CRYPTO_ccm128_decrypt(const struct ccm128_context *ctx,
+                                 const AES_KEY *key, uint8_t *out,
+                                 uint8_t *out_tag, size_t tag_len,
+                                 const uint8_t *nonce, size_t nonce_len,
+                                 const uint8_t *in, size_t len,
+                                 const uint8_t *aad, size_t aad_len) {
+  struct ccm128_state state;
+  return ccm128_init_state(ctx, &state, key, nonce, nonce_len, aad, aad_len,
+                           len) &&
+         ccm128_encrypt(ctx, &state, key, out, in, len) &&
+         ccm128_compute_mac(ctx, &state, key, out_tag, tag_len, out, len);
+}
+
+#define EVP_AEAD_AES_CCM_MAX_TAG_LEN 16
+
+struct aead_aes_ccm_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  struct ccm128_context ccm;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_ccm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_ccm_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_ccm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                             size_t key_len, size_t tag_len, unsigned M,
+                             unsigned L) {
+  assert(M == EVP_AEAD_max_overhead(ctx->aead));
+  assert(M == EVP_AEAD_max_tag_len(ctx->aead));
+  assert(15 - L == EVP_AEAD_nonce_length(ctx->aead));
+
+  if (key_len != EVP_AEAD_key_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = M;
+  }
+
+  if (tag_len != M) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_ccm_ctx *ccm_ctx = (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  block128_f block;
+  ctr128_f ctr = aes_ctr_set_key(&ccm_ctx->ks.ks, NULL, &block, key, key_len);
+  ctx->tag_len = tag_len;
+  if (!CRYPTO_ccm128_init(&ccm_ctx->ccm, &ccm_ctx->ks.ks, block, ctr, M, L)) {
+    OPENSSL_PUT_ERROR(CIPHER, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static void aead_aes_ccm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static int aead_aes_ccm_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ccm_ctx *ccm_ctx =
+      (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  if (in_len > CRYPTO_ccm128_max_input(&ccm_ctx->ccm)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (!CRYPTO_ccm128_encrypt(&ccm_ctx->ccm, &ccm_ctx->ks.ks, out, out_tag,
+                             ctx->tag_len, nonce, nonce_len, in, in_len, ad,
+                             ad_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  *out_tag_len = ctx->tag_len;
+  return 1;
+}
+
+static int aead_aes_ccm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                    const uint8_t *nonce, size_t nonce_len,
+                                    const uint8_t *in, size_t in_len,
+                                    const uint8_t *in_tag, size_t in_tag_len,
+                                    const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ccm_ctx *ccm_ctx =
+      (struct aead_aes_ccm_ctx *)&ctx->state;
+
+  if (in_len > CRYPTO_ccm128_max_input(&ccm_ctx->ccm)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  uint8_t tag[EVP_AEAD_AES_CCM_MAX_TAG_LEN];
+  assert(ctx->tag_len <= EVP_AEAD_AES_CCM_MAX_TAG_LEN);
+  if (!CRYPTO_ccm128_decrypt(&ccm_ctx->ccm, &ccm_ctx->ks.ks, out, tag,
+                             ctx->tag_len, nonce, nonce_len, in, in_len, ad,
+                             ad_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aead_aes_ccm_bluetooth_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                       size_t key_len, size_t tag_len) {
+  return aead_aes_ccm_init(ctx, key, key_len, tag_len, 4, 2);
+}
+
+static const EVP_AEAD aead_aes_128_ccm_bluetooth = {
+    16,  // key length (AES-128)
+    13,  // nonce length
+    4,   // overhead
+    4,   // max tag length
+    0,   // seal_scatter_supports_extra_in
+
+    aead_aes_ccm_bluetooth_init,
+    NULL /* init_with_direction */,
+    aead_aes_ccm_cleanup,
+    NULL /* open */,
+    aead_aes_ccm_seal_scatter,
+    aead_aes_ccm_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth(void) {
+  return &aead_aes_128_ccm_bluetooth;
+}
+
+static int aead_aes_ccm_bluetooth_8_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                         size_t key_len, size_t tag_len) {
+  return aead_aes_ccm_init(ctx, key, key_len, tag_len, 8, 2);
+}
+
+static const EVP_AEAD aead_aes_128_ccm_bluetooth_8 = {
+    16,  // key length (AES-128)
+    13,  // nonce length
+    8,   // overhead
+    8,   // max tag length
+    0,   // seal_scatter_supports_extra_in
+
+    aead_aes_ccm_bluetooth_8_init,
+    NULL /* init_with_direction */,
+    aead_aes_ccm_cleanup,
+    NULL /* open */,
+    aead_aes_ccm_seal_scatter,
+    aead_aes_ccm_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth_8(void) {
+  return &aead_aes_128_ccm_bluetooth_8;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c
new file mode 100644
index 0000000..e3daec4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c	
@@ -0,0 +1,283 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/crypto.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/sha.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+#define EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN SHA256_DIGEST_LENGTH
+#define EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN 12
+
+struct aead_aes_ctr_hmac_sha256_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  ctr128_f ctr;
+  block128_f block;
+  SHA256_CTX inner_init_state;
+  SHA256_CTX outer_init_state;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_ctr_hmac_sha256_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_ctr_hmac_sha256_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static void hmac_init(SHA256_CTX *out_inner, SHA256_CTX *out_outer,
+                      const uint8_t hmac_key[32]) {
+  static const size_t hmac_key_len = 32;
+  uint8_t block[SHA256_CBLOCK];
+  OPENSSL_memcpy(block, hmac_key, hmac_key_len);
+  OPENSSL_memset(block + hmac_key_len, 0x36, sizeof(block) - hmac_key_len);
+
+  unsigned i;
+  for (i = 0; i < hmac_key_len; i++) {
+    block[i] ^= 0x36;
+  }
+
+  SHA256_Init(out_inner);
+  SHA256_Update(out_inner, block, sizeof(block));
+
+  OPENSSL_memset(block + hmac_key_len, 0x5c, sizeof(block) - hmac_key_len);
+  for (i = 0; i < hmac_key_len; i++) {
+    block[i] ^= (0x36 ^ 0x5c);
+  }
+
+  SHA256_Init(out_outer);
+  SHA256_Update(out_outer, block, sizeof(block));
+}
+
+static int aead_aes_ctr_hmac_sha256_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                         size_t key_len, size_t tag_len) {
+  struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *)&ctx->state;
+  static const size_t hmac_key_len = 32;
+
+  if (key_len < hmac_key_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  const size_t aes_key_len = key_len - hmac_key_len;
+  if (aes_key_len != 16 && aes_key_len != 32) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN;
+  }
+
+  if (tag_len > EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  aes_ctx->ctr =
+      aes_ctr_set_key(&aes_ctx->ks.ks, NULL, &aes_ctx->block, key, aes_key_len);
+  ctx->tag_len = tag_len;
+  hmac_init(&aes_ctx->inner_init_state, &aes_ctx->outer_init_state,
+            key + aes_key_len);
+
+  return 1;
+}
+
+static void aead_aes_ctr_hmac_sha256_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static void hmac_update_uint64(SHA256_CTX *sha256, uint64_t value) {
+  unsigned i;
+  uint8_t bytes[8];
+
+  for (i = 0; i < sizeof(bytes); i++) {
+    bytes[i] = value & 0xff;
+    value >>= 8;
+  }
+  SHA256_Update(sha256, bytes, sizeof(bytes));
+}
+
+static void hmac_calculate(uint8_t out[SHA256_DIGEST_LENGTH],
+                           const SHA256_CTX *inner_init_state,
+                           const SHA256_CTX *outer_init_state,
+                           const uint8_t *ad, size_t ad_len,
+                           const uint8_t *nonce, const uint8_t *ciphertext,
+                           size_t ciphertext_len) {
+  SHA256_CTX sha256;
+  OPENSSL_memcpy(&sha256, inner_init_state, sizeof(sha256));
+  hmac_update_uint64(&sha256, ad_len);
+  hmac_update_uint64(&sha256, ciphertext_len);
+  SHA256_Update(&sha256, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
+  SHA256_Update(&sha256, ad, ad_len);
+
+  // Pad with zeros to the end of the SHA-256 block.
+  const unsigned num_padding =
+      (SHA256_CBLOCK - ((sizeof(uint64_t)*2 +
+                         EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN + ad_len) %
+                        SHA256_CBLOCK)) %
+      SHA256_CBLOCK;
+  uint8_t padding[SHA256_CBLOCK];
+  OPENSSL_memset(padding, 0, num_padding);
+  SHA256_Update(&sha256, padding, num_padding);
+
+  SHA256_Update(&sha256, ciphertext, ciphertext_len);
+
+  uint8_t inner_digest[SHA256_DIGEST_LENGTH];
+  SHA256_Final(inner_digest, &sha256);
+
+  OPENSSL_memcpy(&sha256, outer_init_state, sizeof(sha256));
+  SHA256_Update(&sha256, inner_digest, sizeof(inner_digest));
+  SHA256_Final(out, &sha256);
+}
+
+static void aead_aes_ctr_hmac_sha256_crypt(
+    const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx, uint8_t *out,
+    const uint8_t *in, size_t len, const uint8_t *nonce) {
+  // Since the AEAD operation is one-shot, keeping a buffer of unused keystream
+  // bytes is pointless. However, |CRYPTO_ctr128_encrypt| requires it.
+  uint8_t partial_block_buffer[AES_BLOCK_SIZE];
+  unsigned partial_block_offset = 0;
+  OPENSSL_memset(partial_block_buffer, 0, sizeof(partial_block_buffer));
+
+  uint8_t counter[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(counter, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
+  OPENSSL_memset(counter + EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN, 0, 4);
+
+  if (aes_ctx->ctr) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, &aes_ctx->ks.ks, counter,
+                                partial_block_buffer, &partial_block_offset,
+                                aes_ctx->ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, &aes_ctx->ks.ks, counter,
+                          partial_block_buffer, &partial_block_offset,
+                          aes_ctx->block);
+  }
+}
+
+static int aead_aes_ctr_hmac_sha256_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *) &ctx->state;
+  const uint64_t in_len_64 = in_len;
+
+  if (in_len_64 >= (UINT64_C(1) << 32) * AES_BLOCK_SIZE) {
+     // This input is so large it would overflow the 32-bit block counter.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, in_len, nonce);
+
+  uint8_t hmac_result[SHA256_DIGEST_LENGTH];
+  hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
+                 &aes_ctx->outer_init_state, ad, ad_len, nonce, out, in_len);
+  OPENSSL_memcpy(out_tag, hmac_result, ctx->tag_len);
+  *out_tag_len = ctx->tag_len;
+
+  return 1;
+}
+
+static int aead_aes_ctr_hmac_sha256_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *) &ctx->state;
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  uint8_t hmac_result[SHA256_DIGEST_LENGTH];
+  hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
+                 &aes_ctx->outer_init_state, ad, ad_len, nonce, in,
+                 in_len);
+  if (CRYPTO_memcmp(hmac_result, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, in_len, nonce);
+
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_ctr_hmac_sha256 = {
+    16 /* AES key */ + 32 /* HMAC key */,
+    12,                                    // nonce length
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // overhead
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // max tag length
+    0,                                     // seal_scatter_supports_extra_in
+
+    aead_aes_ctr_hmac_sha256_init,
+    NULL /* init_with_direction */,
+    aead_aes_ctr_hmac_sha256_cleanup,
+    NULL /* open */,
+    aead_aes_ctr_hmac_sha256_seal_scatter,
+    aead_aes_ctr_hmac_sha256_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_ctr_hmac_sha256 = {
+    32 /* AES key */ + 32 /* HMAC key */,
+    12,                                    // nonce length
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // overhead
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // max tag length
+    0,                                     // seal_scatter_supports_extra_in
+
+    aead_aes_ctr_hmac_sha256_init,
+    NULL /* init_with_direction */,
+    aead_aes_ctr_hmac_sha256_cleanup,
+    NULL /* open */,
+    aead_aes_ctr_hmac_sha256_seal_scatter,
+    aead_aes_ctr_hmac_sha256_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void) {
+  return &aead_aes_128_ctr_hmac_sha256;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void) {
+  return &aead_aes_256_ctr_hmac_sha256;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c.grpc_back
new file mode 100644
index 0000000..8c45c81
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesctrhmac.c.grpc_back	
@@ -0,0 +1,283 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/aead.h>
+#include <openssl/cipher.h>
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+#include <openssl/sha.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+#define EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN SHA256_DIGEST_LENGTH
+#define EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN 12
+
+struct aead_aes_ctr_hmac_sha256_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  ctr128_f ctr;
+  block128_f block;
+  SHA256_CTX inner_init_state;
+  SHA256_CTX outer_init_state;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_ctr_hmac_sha256_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_ctr_hmac_sha256_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static void hmac_init(SHA256_CTX *out_inner, SHA256_CTX *out_outer,
+                      const uint8_t hmac_key[32]) {
+  static const size_t hmac_key_len = 32;
+  uint8_t block[SHA256_CBLOCK];
+  OPENSSL_memcpy(block, hmac_key, hmac_key_len);
+  OPENSSL_memset(block + hmac_key_len, 0x36, sizeof(block) - hmac_key_len);
+
+  unsigned i;
+  for (i = 0; i < hmac_key_len; i++) {
+    block[i] ^= 0x36;
+  }
+
+  SHA256_Init(out_inner);
+  SHA256_Update(out_inner, block, sizeof(block));
+
+  OPENSSL_memset(block + hmac_key_len, 0x5c, sizeof(block) - hmac_key_len);
+  for (i = 0; i < hmac_key_len; i++) {
+    block[i] ^= (0x36 ^ 0x5c);
+  }
+
+  SHA256_Init(out_outer);
+  SHA256_Update(out_outer, block, sizeof(block));
+}
+
+static int aead_aes_ctr_hmac_sha256_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                         size_t key_len, size_t tag_len) {
+  struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *)&ctx->state;
+  static const size_t hmac_key_len = 32;
+
+  if (key_len < hmac_key_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  const size_t aes_key_len = key_len - hmac_key_len;
+  if (aes_key_len != 16 && aes_key_len != 32) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN;
+  }
+
+  if (tag_len > EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  aes_ctx->ctr =
+      aes_ctr_set_key(&aes_ctx->ks.ks, NULL, &aes_ctx->block, key, aes_key_len);
+  ctx->tag_len = tag_len;
+  hmac_init(&aes_ctx->inner_init_state, &aes_ctx->outer_init_state,
+            key + aes_key_len);
+
+  return 1;
+}
+
+static void aead_aes_ctr_hmac_sha256_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static void hmac_update_uint64(SHA256_CTX *sha256, uint64_t value) {
+  unsigned i;
+  uint8_t bytes[8];
+
+  for (i = 0; i < sizeof(bytes); i++) {
+    bytes[i] = value & 0xff;
+    value >>= 8;
+  }
+  SHA256_Update(sha256, bytes, sizeof(bytes));
+}
+
+static void hmac_calculate(uint8_t out[SHA256_DIGEST_LENGTH],
+                           const SHA256_CTX *inner_init_state,
+                           const SHA256_CTX *outer_init_state,
+                           const uint8_t *ad, size_t ad_len,
+                           const uint8_t *nonce, const uint8_t *ciphertext,
+                           size_t ciphertext_len) {
+  SHA256_CTX sha256;
+  OPENSSL_memcpy(&sha256, inner_init_state, sizeof(sha256));
+  hmac_update_uint64(&sha256, ad_len);
+  hmac_update_uint64(&sha256, ciphertext_len);
+  SHA256_Update(&sha256, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
+  SHA256_Update(&sha256, ad, ad_len);
+
+  // Pad with zeros to the end of the SHA-256 block.
+  const unsigned num_padding =
+      (SHA256_CBLOCK - ((sizeof(uint64_t)*2 +
+                         EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN + ad_len) %
+                        SHA256_CBLOCK)) %
+      SHA256_CBLOCK;
+  uint8_t padding[SHA256_CBLOCK];
+  OPENSSL_memset(padding, 0, num_padding);
+  SHA256_Update(&sha256, padding, num_padding);
+
+  SHA256_Update(&sha256, ciphertext, ciphertext_len);
+
+  uint8_t inner_digest[SHA256_DIGEST_LENGTH];
+  SHA256_Final(inner_digest, &sha256);
+
+  OPENSSL_memcpy(&sha256, outer_init_state, sizeof(sha256));
+  SHA256_Update(&sha256, inner_digest, sizeof(inner_digest));
+  SHA256_Final(out, &sha256);
+}
+
+static void aead_aes_ctr_hmac_sha256_crypt(
+    const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx, uint8_t *out,
+    const uint8_t *in, size_t len, const uint8_t *nonce) {
+  // Since the AEAD operation is one-shot, keeping a buffer of unused keystream
+  // bytes is pointless. However, |CRYPTO_ctr128_encrypt| requires it.
+  uint8_t partial_block_buffer[AES_BLOCK_SIZE];
+  unsigned partial_block_offset = 0;
+  OPENSSL_memset(partial_block_buffer, 0, sizeof(partial_block_buffer));
+
+  uint8_t counter[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(counter, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
+  OPENSSL_memset(counter + EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN, 0, 4);
+
+  if (aes_ctx->ctr) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, &aes_ctx->ks.ks, counter,
+                                partial_block_buffer, &partial_block_offset,
+                                aes_ctx->ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, &aes_ctx->ks.ks, counter,
+                          partial_block_buffer, &partial_block_offset,
+                          aes_ctx->block);
+  }
+}
+
+static int aead_aes_ctr_hmac_sha256_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *) &ctx->state;
+  const uint64_t in_len_64 = in_len;
+
+  if (in_len_64 >= (UINT64_C(1) << 32) * AES_BLOCK_SIZE) {
+     // This input is so large it would overflow the 32-bit block counter.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, in_len, nonce);
+
+  uint8_t hmac_result[SHA256_DIGEST_LENGTH];
+  hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
+                 &aes_ctx->outer_init_state, ad, ad_len, nonce, out, in_len);
+  OPENSSL_memcpy(out_tag, hmac_result, ctx->tag_len);
+  *out_tag_len = ctx->tag_len;
+
+  return 1;
+}
+
+static int aead_aes_ctr_hmac_sha256_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx =
+      (struct aead_aes_ctr_hmac_sha256_ctx *) &ctx->state;
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  uint8_t hmac_result[SHA256_DIGEST_LENGTH];
+  hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
+                 &aes_ctx->outer_init_state, ad, ad_len, nonce, in,
+                 in_len);
+  if (CRYPTO_memcmp(hmac_result, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, in_len, nonce);
+
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_ctr_hmac_sha256 = {
+    16 /* AES key */ + 32 /* HMAC key */,
+    12,                                    // nonce length
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // overhead
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // max tag length
+    0,                                     // seal_scatter_supports_extra_in
+
+    aead_aes_ctr_hmac_sha256_init,
+    NULL /* init_with_direction */,
+    aead_aes_ctr_hmac_sha256_cleanup,
+    NULL /* open */,
+    aead_aes_ctr_hmac_sha256_seal_scatter,
+    aead_aes_ctr_hmac_sha256_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_ctr_hmac_sha256 = {
+    32 /* AES key */ + 32 /* HMAC key */,
+    12,                                    // nonce length
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // overhead
+    EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN,  // max tag length
+    0,                                     // seal_scatter_supports_extra_in
+
+    aead_aes_ctr_hmac_sha256_init,
+    NULL /* init_with_direction */,
+    aead_aes_ctr_hmac_sha256_cleanup,
+    NULL /* open */,
+    aead_aes_ctr_hmac_sha256_seal_scatter,
+    aead_aes_ctr_hmac_sha256_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void) {
+  return &aead_aes_128_ctr_hmac_sha256;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void) {
+  return &aead_aes_256_ctr_hmac_sha256;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c
new file mode 100644
index 0000000..9c7e471
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c	
@@ -0,0 +1,891 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/aead.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/crypto.h>
+#include <openssl_grpc/err.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+#define EVP_AEAD_AES_GCM_SIV_NONCE_LEN 12
+#define EVP_AEAD_AES_GCM_SIV_TAG_LEN 16
+
+// TODO(davidben): AES-GCM-SIV assembly is not correct for Windows. It must save
+// and restore xmm6 through xmm15.
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(OPENSSL_WINDOWS)
+#define AES_GCM_SIV_ASM
+
+// Optimised AES-GCM-SIV
+
+struct aead_aes_gcm_siv_asm_ctx {
+  alignas(16) uint8_t key[16*15];
+  int is_128_bit;
+};
+
+// The assembly code assumes 8-byte alignment of the EVP_AEAD_CTX's state, and
+// aligns to 16 bytes itself.
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) + 8 >=
+                          sizeof(struct aead_aes_gcm_siv_asm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >= 8,
+                      "AEAD state has insufficient alignment");
+#endif
+
+// asm_ctx_from_ctx returns a 16-byte aligned context pointer from |ctx|.
+static struct aead_aes_gcm_siv_asm_ctx *asm_ctx_from_ctx(
+    const EVP_AEAD_CTX *ctx) {
+  // ctx->state must already be 8-byte aligned. Thus, at most, we may need to
+  // add eight to align it to 16 bytes.
+  const uintptr_t offset = ((uintptr_t)&ctx->state) & 8;
+  return (struct aead_aes_gcm_siv_asm_ctx *)(&ctx->state.opaque[offset]);
+}
+
+// aes128gcmsiv_aes_ks writes an AES-128 key schedule for |key| to
+// |out_expanded_key|.
+extern void aes128gcmsiv_aes_ks(
+    const uint8_t key[16], uint8_t out_expanded_key[16*15]);
+
+// aes256gcmsiv_aes_ks writes an AES-256 key schedule for |key| to
+// |out_expanded_key|.
+extern void aes256gcmsiv_aes_ks(
+    const uint8_t key[32], uint8_t out_expanded_key[16*15]);
+
+static int aead_aes_gcm_siv_asm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                     size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  }
+
+  if (tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  assert((((uintptr_t)gcm_siv_ctx) & 15) == 0);
+
+  if (key_bits == 128) {
+    aes128gcmsiv_aes_ks(key, &gcm_siv_ctx->key[0]);
+    gcm_siv_ctx->is_128_bit = 1;
+  } else {
+    aes256gcmsiv_aes_ks(key, &gcm_siv_ctx->key[0]);
+    gcm_siv_ctx->is_128_bit = 0;
+  }
+
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_aes_gcm_siv_asm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+// aesgcmsiv_polyval_horner updates the POLYVAL value in |in_out_poly| to
+// include a number (|in_blocks|) of 16-byte blocks of data from |in|, given
+// the POLYVAL key in |key|.
+extern void aesgcmsiv_polyval_horner(const uint8_t in_out_poly[16],
+                                     const uint8_t key[16], const uint8_t *in,
+                                     size_t in_blocks);
+
+// aesgcmsiv_htable_init writes powers 1..8 of |auth_key| to |out_htable|.
+extern void aesgcmsiv_htable_init(uint8_t out_htable[16 * 8],
+                                  const uint8_t auth_key[16]);
+
+// aesgcmsiv_htable6_init writes powers 1..6 of |auth_key| to |out_htable|.
+extern void aesgcmsiv_htable6_init(uint8_t out_htable[16 * 6],
+                                   const uint8_t auth_key[16]);
+
+// aesgcmsiv_htable_polyval updates the POLYVAL value in |in_out_poly| to
+// include |in_len| bytes of data from |in|. (Where |in_len| must be a multiple
+// of 16.) It uses the precomputed powers of the key given in |htable|.
+extern void aesgcmsiv_htable_polyval(const uint8_t htable[16 * 8],
+                                     const uint8_t *in, size_t in_len,
+                                     uint8_t in_out_poly[16]);
+
+// aes128gcmsiv_dec decrypts |in_len| & ~15 bytes from |out| and writes them to
+// |in|. (The full value of |in_len| is still used to find the authentication
+// tag appended to the ciphertext, however, so must not be pre-masked.)
+//
+// |in| and |out| may be equal, but must not otherwise overlap.
+//
+// While decrypting, it updates the POLYVAL value found at the beginning of
+// |in_out_calculated_tag_and_scratch| and writes the updated value back before
+// return. During executation, it may use the whole of this space for other
+// purposes. In order to decrypt and update the POLYVAL value, it uses the
+// expanded key from |key| and the table of powers in |htable|.
+extern void aes128gcmsiv_dec(const uint8_t *in, uint8_t *out,
+                             uint8_t in_out_calculated_tag_and_scratch[16 * 8],
+                             const uint8_t htable[16 * 6],
+                             const struct aead_aes_gcm_siv_asm_ctx *key,
+                             size_t in_len);
+
+// aes256gcmsiv_dec acts like |aes128gcmsiv_dec|, but for AES-256.
+extern void aes256gcmsiv_dec(const uint8_t *in, uint8_t *out,
+                             uint8_t in_out_calculated_tag_and_scratch[16 * 8],
+                             const uint8_t htable[16 * 6],
+                             const struct aead_aes_gcm_siv_asm_ctx *key,
+                             size_t in_len);
+
+// aes128gcmsiv_kdf performs the AES-GCM-SIV KDF given the expanded key from
+// |key_schedule| and the nonce in |nonce|. Note that, while only 12 bytes of
+// the nonce are used, 16 bytes are read and so the value must be
+// right-padded.
+extern void aes128gcmsiv_kdf(const uint8_t nonce[16],
+                             uint64_t out_key_material[8],
+                             const uint8_t *key_schedule);
+
+// aes256gcmsiv_kdf acts like |aes128gcmsiv_kdf|, but for AES-256.
+extern void aes256gcmsiv_kdf(const uint8_t nonce[16],
+                             uint64_t out_key_material[12],
+                             const uint8_t *key_schedule);
+
+// aes128gcmsiv_aes_ks_enc_x1 performs a key expansion of the AES-128 key in
+// |key|, writes the expanded key to |out_expanded_key| and encrypts a single
+// block from |in| to |out|.
+extern void aes128gcmsiv_aes_ks_enc_x1(const uint8_t in[16], uint8_t out[16],
+                                       uint8_t out_expanded_key[16 * 15],
+                                       const uint64_t key[2]);
+
+// aes256gcmsiv_aes_ks_enc_x1 acts like |aes128gcmsiv_aes_ks_enc_x1|, but for
+// AES-256.
+extern void aes256gcmsiv_aes_ks_enc_x1(const uint8_t in[16], uint8_t out[16],
+                                       uint8_t out_expanded_key[16 * 15],
+                                       const uint64_t key[4]);
+
+// aes128gcmsiv_ecb_enc_block encrypts a single block from |in| to |out| using
+// the expanded key in |expanded_key|.
+extern void aes128gcmsiv_ecb_enc_block(
+    const uint8_t in[16], uint8_t out[16],
+    const struct aead_aes_gcm_siv_asm_ctx *expanded_key);
+
+// aes256gcmsiv_ecb_enc_block acts like |aes128gcmsiv_ecb_enc_block|, but for
+// AES-256.
+extern void aes256gcmsiv_ecb_enc_block(
+    const uint8_t in[16], uint8_t out[16],
+    const struct aead_aes_gcm_siv_asm_ctx *expanded_key);
+
+// aes128gcmsiv_enc_msg_x4 encrypts |in_len| bytes from |in| to |out| using the
+// expanded key from |key|. (The value of |in_len| must be a multiple of 16.)
+// The |in| and |out| buffers may be equal but must not otherwise overlap. The
+// initial counter is constructed from the given |tag| as required by
+// AES-GCM-SIV.
+extern void aes128gcmsiv_enc_msg_x4(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes256gcmsiv_enc_msg_x4 acts like |aes128gcmsiv_enc_msg_x4|, but for
+// AES-256.
+extern void aes256gcmsiv_enc_msg_x4(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes128gcmsiv_enc_msg_x8 acts like |aes128gcmsiv_enc_msg_x4|, but is
+// optimised for longer messages.
+extern void aes128gcmsiv_enc_msg_x8(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes256gcmsiv_enc_msg_x8 acts like |aes256gcmsiv_enc_msg_x4|, but is
+// optimised for longer messages.
+extern void aes256gcmsiv_enc_msg_x8(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// gcm_siv_asm_polyval evaluates POLYVAL at |auth_key| on the given plaintext
+// and AD. The result is written to |out_tag|.
+static void gcm_siv_asm_polyval(uint8_t out_tag[16], const uint8_t *in,
+                                size_t in_len, const uint8_t *ad, size_t ad_len,
+                                const uint8_t auth_key[16],
+                                const uint8_t nonce[12]) {
+  OPENSSL_memset(out_tag, 0, 16);
+  const size_t ad_blocks = ad_len / 16;
+  const size_t in_blocks = in_len / 16;
+  int htable_init = 0;
+  alignas(16) uint8_t htable[16*8];
+
+  if (ad_blocks > 8 || in_blocks > 8) {
+    htable_init = 1;
+    aesgcmsiv_htable_init(htable, auth_key);
+  }
+
+  if (htable_init) {
+    aesgcmsiv_htable_polyval(htable, ad, ad_len & ~15, out_tag);
+  } else {
+    aesgcmsiv_polyval_horner(out_tag, auth_key, ad, ad_blocks);
+  }
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    aesgcmsiv_polyval_horner(out_tag, auth_key, scratch, 1);
+  }
+
+  if (htable_init) {
+    aesgcmsiv_htable_polyval(htable, in, in_len & ~15, out_tag);
+  } else {
+    aesgcmsiv_polyval_horner(out_tag, auth_key, in, in_blocks);
+  }
+
+  if (in_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &in[in_len & ~15], in_len & 15);
+    aesgcmsiv_polyval_horner(out_tag, auth_key, scratch, 1);
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = in_len * 8;
+  aesgcmsiv_polyval_horner(out_tag, auth_key, length_block.c, 1);
+
+  for (size_t i = 0; i < 12; i++) {
+    out_tag[i] ^= nonce[i];
+  }
+
+  out_tag[15] &= 0x7f;
+}
+
+// aead_aes_gcm_siv_asm_crypt_last_block handles the encryption/decryption
+// (same thing in CTR mode) of the final block of a plaintext/ciphertext. It
+// writes |in_len| & 15 bytes to |out| + |in_len|, based on an initial counter
+// derived from |tag|.
+static void aead_aes_gcm_siv_asm_crypt_last_block(
+    int is_128_bit, uint8_t *out, const uint8_t *in, size_t in_len,
+    const uint8_t tag[16],
+    const struct aead_aes_gcm_siv_asm_ctx *enc_key_expanded) {
+  alignas(16) union {
+    uint8_t c[16];
+    uint32_t u32[4];
+  } counter;
+  OPENSSL_memcpy(&counter, tag, sizeof(counter));
+  counter.c[15] |= 0x80;
+  counter.u32[0] += in_len / 16;
+
+  if (is_128_bit) {
+    aes128gcmsiv_ecb_enc_block(&counter.c[0], &counter.c[0], enc_key_expanded);
+  } else {
+    aes256gcmsiv_ecb_enc_block(&counter.c[0], &counter.c[0], enc_key_expanded);
+  }
+
+  const size_t last_bytes_offset = in_len & ~15;
+  const size_t last_bytes_len = in_len & 15;
+  uint8_t *last_bytes_out = &out[last_bytes_offset];
+  const uint8_t *last_bytes_in = &in[last_bytes_offset];
+  for (size_t i = 0; i < last_bytes_len; i++) {
+    last_bytes_out[i] = last_bytes_in[i] ^ counter.c[i];
+  }
+}
+
+// aead_aes_gcm_siv_kdf calculates the record encryption and authentication
+// keys given the |nonce|.
+static void aead_aes_gcm_siv_kdf(
+    int is_128_bit, const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx,
+    uint64_t out_record_auth_key[2], uint64_t out_record_enc_key[4],
+    const uint8_t nonce[12]) {
+  alignas(16) uint8_t padded_nonce[16];
+  OPENSSL_memcpy(padded_nonce, nonce, 12);
+
+  alignas(16) uint64_t key_material[12];
+  if (is_128_bit) {
+    aes128gcmsiv_kdf(padded_nonce, key_material, &gcm_siv_ctx->key[0]);
+    out_record_enc_key[0] = key_material[4];
+    out_record_enc_key[1] = key_material[6];
+  } else {
+    aes256gcmsiv_kdf(padded_nonce, key_material, &gcm_siv_ctx->key[0]);
+    out_record_enc_key[0] = key_material[4];
+    out_record_enc_key[1] = key_material[6];
+    out_record_enc_key[2] = key_material[8];
+    out_record_enc_key[3] = key_material[10];
+  }
+
+  out_record_auth_key[0] = key_material[0];
+  out_record_auth_key[1] = key_material[2];
+}
+
+static int aead_aes_gcm_siv_asm_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  const uint64_t in_len_64 = in_len;
+  const uint64_t ad_len_64 = ad_len;
+
+  if (in_len_64 > (UINT64_C(1) << 36) ||
+      ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(16) uint64_t record_auth_key[2];
+  alignas(16) uint64_t record_enc_key[4];
+  aead_aes_gcm_siv_kdf(gcm_siv_ctx->is_128_bit, gcm_siv_ctx, record_auth_key,
+                       record_enc_key, nonce);
+
+  alignas(16) uint8_t tag[16] = {0};
+  gcm_siv_asm_polyval(tag, in, in_len, ad, ad_len,
+                      (const uint8_t *)record_auth_key, nonce);
+
+  struct aead_aes_gcm_siv_asm_ctx enc_key_expanded;
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_aes_ks_enc_x1(tag, tag, &enc_key_expanded.key[0],
+                               record_enc_key);
+
+    if (in_len < 128) {
+      aes128gcmsiv_enc_msg_x4(in, out, tag, &enc_key_expanded, in_len & ~15);
+    } else {
+      aes128gcmsiv_enc_msg_x8(in, out, tag, &enc_key_expanded, in_len & ~15);
+    }
+  } else {
+    aes256gcmsiv_aes_ks_enc_x1(tag, tag, &enc_key_expanded.key[0],
+                               record_enc_key);
+
+    if (in_len < 128) {
+      aes256gcmsiv_enc_msg_x4(in, out, tag, &enc_key_expanded, in_len & ~15);
+    } else {
+      aes256gcmsiv_enc_msg_x8(in, out, tag, &enc_key_expanded, in_len & ~15);
+    }
+  }
+
+  if (in_len & 15) {
+    aead_aes_gcm_siv_asm_crypt_last_block(gcm_siv_ctx->is_128_bit, out, in,
+                                          in_len, tag, &enc_key_expanded);
+  }
+
+  OPENSSL_memcpy(out_tag, tag, sizeof(tag));
+  *out_tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+
+  return 1;
+}
+
+// TODO(martinkr): Add aead_aes_gcm_siv_asm_open_gather. N.B. aes128gcmsiv_dec
+// expects ciphertext and tag in a contiguous buffer.
+
+static int aead_aes_gcm_siv_asm_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len) {
+  const uint64_t ad_len_64 = ad_len;
+  if (ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  const uint64_t in_len_64 = in_len;
+  if (in_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN ||
+      in_len_64 > (UINT64_C(1) << 36) + AES_BLOCK_SIZE) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  const size_t plaintext_len = in_len - EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  const uint8_t *const given_tag = in + plaintext_len;
+
+  if (max_out_len < plaintext_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  alignas(16) uint64_t record_auth_key[2];
+  alignas(16) uint64_t record_enc_key[4];
+  aead_aes_gcm_siv_kdf(gcm_siv_ctx->is_128_bit, gcm_siv_ctx, record_auth_key,
+                       record_enc_key, nonce);
+
+  struct aead_aes_gcm_siv_asm_ctx expanded_key;
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_aes_ks((const uint8_t *) record_enc_key, &expanded_key.key[0]);
+  } else {
+    aes256gcmsiv_aes_ks((const uint8_t *) record_enc_key, &expanded_key.key[0]);
+  }
+  // calculated_tag is 16*8 bytes, rather than 16 bytes, because
+  // aes[128|256]gcmsiv_dec uses the extra as scratch space.
+  alignas(16) uint8_t calculated_tag[16 * 8] = {0};
+
+  OPENSSL_memset(calculated_tag, 0, EVP_AEAD_AES_GCM_SIV_TAG_LEN);
+  const size_t ad_blocks = ad_len / 16;
+  aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key, ad,
+                           ad_blocks);
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                             scratch, 1);
+  }
+
+  alignas(16) uint8_t htable[16 * 6];
+  aesgcmsiv_htable6_init(htable, (const uint8_t *)record_auth_key);
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_dec(in, out, calculated_tag, htable, &expanded_key,
+                     plaintext_len);
+  } else {
+    aes256gcmsiv_dec(in, out, calculated_tag, htable, &expanded_key,
+                     plaintext_len);
+  }
+
+  if (plaintext_len & 15) {
+    aead_aes_gcm_siv_asm_crypt_last_block(gcm_siv_ctx->is_128_bit, out, in,
+                                          plaintext_len, given_tag,
+                                          &expanded_key);
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, out + (plaintext_len & ~15), plaintext_len & 15);
+    aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                             scratch, 1);
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = plaintext_len * 8;
+  aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                           length_block.c, 1);
+
+  for (size_t i = 0; i < 12; i++) {
+    calculated_tag[i] ^= nonce[i];
+  }
+
+  calculated_tag[15] &= 0x7f;
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_ecb_enc_block(calculated_tag, calculated_tag, &expanded_key);
+  } else {
+    aes256gcmsiv_ecb_enc_block(calculated_tag, calculated_tag, &expanded_key);
+  }
+
+  if (CRYPTO_memcmp(calculated_tag, given_tag, EVP_AEAD_AES_GCM_SIV_TAG_LEN) !=
+      0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  *out_len = in_len - EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_gcm_siv_asm = {
+    16,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_asm_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_asm_cleanup,
+    aead_aes_gcm_siv_asm_open,
+    aead_aes_gcm_siv_asm_seal_scatter,
+    NULL /* open_gather */,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_gcm_siv_asm = {
+    32,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_asm_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_asm_cleanup,
+    aead_aes_gcm_siv_asm_open,
+    aead_aes_gcm_siv_asm_seal_scatter,
+    NULL /* open_gather */,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+#endif  // X86_64 && !NO_ASM && !WINDOWS
+
+struct aead_aes_gcm_siv_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  block128_f kgk_block;
+  unsigned is_256:1;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_siv_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_siv_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_siv_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                 size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  }
+  if (tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+  OPENSSL_memset(gcm_siv_ctx, 0, sizeof(struct aead_aes_gcm_siv_ctx));
+
+  aes_ctr_set_key(&gcm_siv_ctx->ks.ks, NULL, &gcm_siv_ctx->kgk_block, key,
+                  key_len);
+  gcm_siv_ctx->is_256 = (key_len == 32);
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_aes_gcm_siv_cleanup(EVP_AEAD_CTX *ctx) {}
+
+// gcm_siv_crypt encrypts (or decrypts—it's the same thing) |in_len| bytes from
+// |in| to |out|, using the block function |enc_block| with |key| in counter
+// mode, starting at |initial_counter|. This differs from the traditional
+// counter mode code in that the counter is handled little-endian, only the
+// first four bytes are used and the GCM-SIV tweak to the final byte is
+// applied. The |in| and |out| pointers may be equal but otherwise must not
+// alias.
+static void gcm_siv_crypt(uint8_t *out, const uint8_t *in, size_t in_len,
+                          const uint8_t initial_counter[AES_BLOCK_SIZE],
+                          block128_f enc_block, const AES_KEY *key) {
+  union {
+    uint32_t w[4];
+    uint8_t c[16];
+  } counter;
+
+  OPENSSL_memcpy(counter.c, initial_counter, AES_BLOCK_SIZE);
+  counter.c[15] |= 0x80;
+
+  for (size_t done = 0; done < in_len;) {
+    uint8_t keystream[AES_BLOCK_SIZE];
+    enc_block(counter.c, keystream, key);
+    counter.w[0]++;
+
+    size_t todo = AES_BLOCK_SIZE;
+    if (in_len - done < todo) {
+      todo = in_len - done;
+    }
+
+    for (size_t i = 0; i < todo; i++) {
+      out[done + i] = keystream[i] ^ in[done + i];
+    }
+
+    done += todo;
+  }
+}
+
+// gcm_siv_polyval evaluates POLYVAL at |auth_key| on the given plaintext and
+// AD. The result is written to |out_tag|.
+static void gcm_siv_polyval(
+    uint8_t out_tag[16], const uint8_t *in, size_t in_len, const uint8_t *ad,
+    size_t ad_len, const uint8_t auth_key[16],
+    const uint8_t nonce[EVP_AEAD_AES_GCM_SIV_NONCE_LEN]) {
+  struct polyval_ctx polyval_ctx;
+  CRYPTO_POLYVAL_init(&polyval_ctx, auth_key);
+
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, ad, ad_len & ~15);
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    CRYPTO_POLYVAL_update_blocks(&polyval_ctx, scratch, sizeof(scratch));
+  }
+
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, in, in_len & ~15);
+  if (in_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &in[in_len & ~15], in_len & 15);
+    CRYPTO_POLYVAL_update_blocks(&polyval_ctx, scratch, sizeof(scratch));
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = in_len * 8;
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, length_block.c,
+                               sizeof(length_block));
+
+  CRYPTO_POLYVAL_finish(&polyval_ctx, out_tag);
+  for (size_t i = 0; i < EVP_AEAD_AES_GCM_SIV_NONCE_LEN; i++) {
+    out_tag[i] ^= nonce[i];
+  }
+  out_tag[15] &= 0x7f;
+}
+
+// gcm_siv_record_keys contains the keys used for a specific GCM-SIV record.
+struct gcm_siv_record_keys {
+  uint8_t auth_key[16];
+  union {
+    double align;
+    AES_KEY ks;
+  } enc_key;
+  block128_f enc_block;
+};
+
+// gcm_siv_keys calculates the keys for a specific GCM-SIV record with the
+// given nonce and writes them to |*out_keys|.
+static void gcm_siv_keys(
+    const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx,
+    struct gcm_siv_record_keys *out_keys,
+    const uint8_t nonce[EVP_AEAD_AES_GCM_SIV_NONCE_LEN]) {
+  const AES_KEY *const key = &gcm_siv_ctx->ks.ks;
+  uint8_t key_material[(128 /* POLYVAL key */ + 256 /* max AES key */) / 8];
+  const size_t blocks_needed = gcm_siv_ctx->is_256 ? 6 : 4;
+
+  uint8_t counter[AES_BLOCK_SIZE];
+  OPENSSL_memset(counter, 0, AES_BLOCK_SIZE - EVP_AEAD_AES_GCM_SIV_NONCE_LEN);
+  OPENSSL_memcpy(counter + AES_BLOCK_SIZE - EVP_AEAD_AES_GCM_SIV_NONCE_LEN,
+                 nonce, EVP_AEAD_AES_GCM_SIV_NONCE_LEN);
+  for (size_t i = 0; i < blocks_needed; i++) {
+    counter[0] = i;
+
+    uint8_t ciphertext[AES_BLOCK_SIZE];
+    gcm_siv_ctx->kgk_block(counter, ciphertext, key);
+    OPENSSL_memcpy(&key_material[i * 8], ciphertext, 8);
+  }
+
+  OPENSSL_memcpy(out_keys->auth_key, key_material, 16);
+  // Note the |ctr128_f| function uses a big-endian couner, while AES-GCM-SIV
+  // uses a little-endian counter. We ignore the return value and only use
+  // |block128_f|. This has a significant performance cost for the fallback
+  // bitsliced AES implementations (bsaes and aes_nohw).
+  //
+  // We currently do not consider AES-GCM-SIV to be performance-sensitive on
+  // client hardware. If this changes, we can write little-endian |ctr128_f|
+  // functions.
+  aes_ctr_set_key(&out_keys->enc_key.ks, NULL, &out_keys->enc_block,
+                  key_material + 16, gcm_siv_ctx->is_256 ? 32 : 16);
+}
+
+static int aead_aes_gcm_siv_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+  const uint64_t in_len_64 = in_len;
+  const uint64_t ad_len_64 = ad_len;
+
+  if (in_len + EVP_AEAD_AES_GCM_SIV_TAG_LEN < in_len ||
+      in_len_64 > (UINT64_C(1) << 36) ||
+      ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  struct gcm_siv_record_keys keys;
+  gcm_siv_keys(gcm_siv_ctx, &keys, nonce);
+
+  uint8_t tag[16];
+  gcm_siv_polyval(tag, in, in_len, ad, ad_len, keys.auth_key, nonce);
+  keys.enc_block(tag, tag, &keys.enc_key.ks);
+
+  gcm_siv_crypt(out, in, in_len, tag, keys.enc_block, &keys.enc_key.ks);
+
+  OPENSSL_memcpy(out_tag, tag, EVP_AEAD_AES_GCM_SIV_TAG_LEN);
+  *out_tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+
+  return 1;
+}
+
+static int aead_aes_gcm_siv_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                        const uint8_t *nonce, size_t nonce_len,
+                                        const uint8_t *in, size_t in_len,
+                                        const uint8_t *in_tag,
+                                        size_t in_tag_len, const uint8_t *ad,
+                                        size_t ad_len) {
+  const uint64_t ad_len_64 = ad_len;
+  if (ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  const uint64_t in_len_64 = in_len;
+  if (in_tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN ||
+      in_len_64 > (UINT64_C(1) << 36) + AES_BLOCK_SIZE) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+
+  struct gcm_siv_record_keys keys;
+  gcm_siv_keys(gcm_siv_ctx, &keys, nonce);
+
+  gcm_siv_crypt(out, in, in_len, in_tag, keys.enc_block, &keys.enc_key.ks);
+
+  uint8_t expected_tag[EVP_AEAD_AES_GCM_SIV_TAG_LEN];
+  gcm_siv_polyval(expected_tag, out, in_len, ad, ad_len, keys.auth_key, nonce);
+  keys.enc_block(expected_tag, expected_tag, &keys.enc_key.ks);
+
+  if (CRYPTO_memcmp(expected_tag, in_tag, sizeof(expected_tag)) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_gcm_siv = {
+    16,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_cleanup,
+    NULL /* open */,
+    aead_aes_gcm_siv_seal_scatter,
+    aead_aes_gcm_siv_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_gcm_siv = {
+    32,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_cleanup,
+    NULL /* open */,
+    aead_aes_gcm_siv_seal_scatter,
+    aead_aes_gcm_siv_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+#if defined(AES_GCM_SIV_ASM)
+
+static char avx_aesni_capable(void) {
+  const uint32_t ecx = OPENSSL_ia32cap_P[1];
+
+  return (ecx & (1 << (57 - 32))) != 0 /* AESNI */ &&
+         (ecx & (1 << 28)) != 0 /* AVX */;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void) {
+  if (avx_aesni_capable()) {
+    return &aead_aes_128_gcm_siv_asm;
+  }
+  return &aead_aes_128_gcm_siv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void) {
+  if (avx_aesni_capable()) {
+    return &aead_aes_256_gcm_siv_asm;
+  }
+  return &aead_aes_256_gcm_siv;
+}
+
+#else
+
+const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void) {
+  return &aead_aes_128_gcm_siv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void) {
+  return &aead_aes_256_gcm_siv;
+}
+
+#endif  // AES_GCM_SIV_ASM
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c.grpc_back
new file mode 100644
index 0000000..d717572
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_aesgcmsiv.c.grpc_back	
@@ -0,0 +1,891 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/aead.h>
+
+#include <assert.h>
+
+#include <openssl/cipher.h>
+#include <openssl/cpu.h>
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+
+#include "../fipsmodule/cipher/internal.h"
+
+
+#define EVP_AEAD_AES_GCM_SIV_NONCE_LEN 12
+#define EVP_AEAD_AES_GCM_SIV_TAG_LEN 16
+
+// TODO(davidben): AES-GCM-SIV assembly is not correct for Windows. It must save
+// and restore xmm6 through xmm15.
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(OPENSSL_WINDOWS)
+#define AES_GCM_SIV_ASM
+
+// Optimised AES-GCM-SIV
+
+struct aead_aes_gcm_siv_asm_ctx {
+  alignas(16) uint8_t key[16*15];
+  int is_128_bit;
+};
+
+// The assembly code assumes 8-byte alignment of the EVP_AEAD_CTX's state, and
+// aligns to 16 bytes itself.
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) + 8 >=
+                          sizeof(struct aead_aes_gcm_siv_asm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >= 8,
+                      "AEAD state has insufficient alignment");
+#endif
+
+// asm_ctx_from_ctx returns a 16-byte aligned context pointer from |ctx|.
+static struct aead_aes_gcm_siv_asm_ctx *asm_ctx_from_ctx(
+    const EVP_AEAD_CTX *ctx) {
+  // ctx->state must already be 8-byte aligned. Thus, at most, we may need to
+  // add eight to align it to 16 bytes.
+  const uintptr_t offset = ((uintptr_t)&ctx->state) & 8;
+  return (struct aead_aes_gcm_siv_asm_ctx *)(&ctx->state.opaque[offset]);
+}
+
+// aes128gcmsiv_aes_ks writes an AES-128 key schedule for |key| to
+// |out_expanded_key|.
+extern void aes128gcmsiv_aes_ks(
+    const uint8_t key[16], uint8_t out_expanded_key[16*15]);
+
+// aes256gcmsiv_aes_ks writes an AES-256 key schedule for |key| to
+// |out_expanded_key|.
+extern void aes256gcmsiv_aes_ks(
+    const uint8_t key[32], uint8_t out_expanded_key[16*15]);
+
+static int aead_aes_gcm_siv_asm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                     size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  }
+
+  if (tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  assert((((uintptr_t)gcm_siv_ctx) & 15) == 0);
+
+  if (key_bits == 128) {
+    aes128gcmsiv_aes_ks(key, &gcm_siv_ctx->key[0]);
+    gcm_siv_ctx->is_128_bit = 1;
+  } else {
+    aes256gcmsiv_aes_ks(key, &gcm_siv_ctx->key[0]);
+    gcm_siv_ctx->is_128_bit = 0;
+  }
+
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_aes_gcm_siv_asm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+// aesgcmsiv_polyval_horner updates the POLYVAL value in |in_out_poly| to
+// include a number (|in_blocks|) of 16-byte blocks of data from |in|, given
+// the POLYVAL key in |key|.
+extern void aesgcmsiv_polyval_horner(const uint8_t in_out_poly[16],
+                                     const uint8_t key[16], const uint8_t *in,
+                                     size_t in_blocks);
+
+// aesgcmsiv_htable_init writes powers 1..8 of |auth_key| to |out_htable|.
+extern void aesgcmsiv_htable_init(uint8_t out_htable[16 * 8],
+                                  const uint8_t auth_key[16]);
+
+// aesgcmsiv_htable6_init writes powers 1..6 of |auth_key| to |out_htable|.
+extern void aesgcmsiv_htable6_init(uint8_t out_htable[16 * 6],
+                                   const uint8_t auth_key[16]);
+
+// aesgcmsiv_htable_polyval updates the POLYVAL value in |in_out_poly| to
+// include |in_len| bytes of data from |in|. (Where |in_len| must be a multiple
+// of 16.) It uses the precomputed powers of the key given in |htable|.
+extern void aesgcmsiv_htable_polyval(const uint8_t htable[16 * 8],
+                                     const uint8_t *in, size_t in_len,
+                                     uint8_t in_out_poly[16]);
+
+// aes128gcmsiv_dec decrypts |in_len| & ~15 bytes from |out| and writes them to
+// |in|. (The full value of |in_len| is still used to find the authentication
+// tag appended to the ciphertext, however, so must not be pre-masked.)
+//
+// |in| and |out| may be equal, but must not otherwise overlap.
+//
+// While decrypting, it updates the POLYVAL value found at the beginning of
+// |in_out_calculated_tag_and_scratch| and writes the updated value back before
+// return. During executation, it may use the whole of this space for other
+// purposes. In order to decrypt and update the POLYVAL value, it uses the
+// expanded key from |key| and the table of powers in |htable|.
+extern void aes128gcmsiv_dec(const uint8_t *in, uint8_t *out,
+                             uint8_t in_out_calculated_tag_and_scratch[16 * 8],
+                             const uint8_t htable[16 * 6],
+                             const struct aead_aes_gcm_siv_asm_ctx *key,
+                             size_t in_len);
+
+// aes256gcmsiv_dec acts like |aes128gcmsiv_dec|, but for AES-256.
+extern void aes256gcmsiv_dec(const uint8_t *in, uint8_t *out,
+                             uint8_t in_out_calculated_tag_and_scratch[16 * 8],
+                             const uint8_t htable[16 * 6],
+                             const struct aead_aes_gcm_siv_asm_ctx *key,
+                             size_t in_len);
+
+// aes128gcmsiv_kdf performs the AES-GCM-SIV KDF given the expanded key from
+// |key_schedule| and the nonce in |nonce|. Note that, while only 12 bytes of
+// the nonce are used, 16 bytes are read and so the value must be
+// right-padded.
+extern void aes128gcmsiv_kdf(const uint8_t nonce[16],
+                             uint64_t out_key_material[8],
+                             const uint8_t *key_schedule);
+
+// aes256gcmsiv_kdf acts like |aes128gcmsiv_kdf|, but for AES-256.
+extern void aes256gcmsiv_kdf(const uint8_t nonce[16],
+                             uint64_t out_key_material[12],
+                             const uint8_t *key_schedule);
+
+// aes128gcmsiv_aes_ks_enc_x1 performs a key expansion of the AES-128 key in
+// |key|, writes the expanded key to |out_expanded_key| and encrypts a single
+// block from |in| to |out|.
+extern void aes128gcmsiv_aes_ks_enc_x1(const uint8_t in[16], uint8_t out[16],
+                                       uint8_t out_expanded_key[16 * 15],
+                                       const uint64_t key[2]);
+
+// aes256gcmsiv_aes_ks_enc_x1 acts like |aes128gcmsiv_aes_ks_enc_x1|, but for
+// AES-256.
+extern void aes256gcmsiv_aes_ks_enc_x1(const uint8_t in[16], uint8_t out[16],
+                                       uint8_t out_expanded_key[16 * 15],
+                                       const uint64_t key[4]);
+
+// aes128gcmsiv_ecb_enc_block encrypts a single block from |in| to |out| using
+// the expanded key in |expanded_key|.
+extern void aes128gcmsiv_ecb_enc_block(
+    const uint8_t in[16], uint8_t out[16],
+    const struct aead_aes_gcm_siv_asm_ctx *expanded_key);
+
+// aes256gcmsiv_ecb_enc_block acts like |aes128gcmsiv_ecb_enc_block|, but for
+// AES-256.
+extern void aes256gcmsiv_ecb_enc_block(
+    const uint8_t in[16], uint8_t out[16],
+    const struct aead_aes_gcm_siv_asm_ctx *expanded_key);
+
+// aes128gcmsiv_enc_msg_x4 encrypts |in_len| bytes from |in| to |out| using the
+// expanded key from |key|. (The value of |in_len| must be a multiple of 16.)
+// The |in| and |out| buffers may be equal but must not otherwise overlap. The
+// initial counter is constructed from the given |tag| as required by
+// AES-GCM-SIV.
+extern void aes128gcmsiv_enc_msg_x4(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes256gcmsiv_enc_msg_x4 acts like |aes128gcmsiv_enc_msg_x4|, but for
+// AES-256.
+extern void aes256gcmsiv_enc_msg_x4(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes128gcmsiv_enc_msg_x8 acts like |aes128gcmsiv_enc_msg_x4|, but is
+// optimised for longer messages.
+extern void aes128gcmsiv_enc_msg_x8(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// aes256gcmsiv_enc_msg_x8 acts like |aes256gcmsiv_enc_msg_x4|, but is
+// optimised for longer messages.
+extern void aes256gcmsiv_enc_msg_x8(const uint8_t *in, uint8_t *out,
+                                    const uint8_t *tag,
+                                    const struct aead_aes_gcm_siv_asm_ctx *key,
+                                    size_t in_len);
+
+// gcm_siv_asm_polyval evaluates POLYVAL at |auth_key| on the given plaintext
+// and AD. The result is written to |out_tag|.
+static void gcm_siv_asm_polyval(uint8_t out_tag[16], const uint8_t *in,
+                                size_t in_len, const uint8_t *ad, size_t ad_len,
+                                const uint8_t auth_key[16],
+                                const uint8_t nonce[12]) {
+  OPENSSL_memset(out_tag, 0, 16);
+  const size_t ad_blocks = ad_len / 16;
+  const size_t in_blocks = in_len / 16;
+  int htable_init = 0;
+  alignas(16) uint8_t htable[16*8];
+
+  if (ad_blocks > 8 || in_blocks > 8) {
+    htable_init = 1;
+    aesgcmsiv_htable_init(htable, auth_key);
+  }
+
+  if (htable_init) {
+    aesgcmsiv_htable_polyval(htable, ad, ad_len & ~15, out_tag);
+  } else {
+    aesgcmsiv_polyval_horner(out_tag, auth_key, ad, ad_blocks);
+  }
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    aesgcmsiv_polyval_horner(out_tag, auth_key, scratch, 1);
+  }
+
+  if (htable_init) {
+    aesgcmsiv_htable_polyval(htable, in, in_len & ~15, out_tag);
+  } else {
+    aesgcmsiv_polyval_horner(out_tag, auth_key, in, in_blocks);
+  }
+
+  if (in_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &in[in_len & ~15], in_len & 15);
+    aesgcmsiv_polyval_horner(out_tag, auth_key, scratch, 1);
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = in_len * 8;
+  aesgcmsiv_polyval_horner(out_tag, auth_key, length_block.c, 1);
+
+  for (size_t i = 0; i < 12; i++) {
+    out_tag[i] ^= nonce[i];
+  }
+
+  out_tag[15] &= 0x7f;
+}
+
+// aead_aes_gcm_siv_asm_crypt_last_block handles the encryption/decryption
+// (same thing in CTR mode) of the final block of a plaintext/ciphertext. It
+// writes |in_len| & 15 bytes to |out| + |in_len|, based on an initial counter
+// derived from |tag|.
+static void aead_aes_gcm_siv_asm_crypt_last_block(
+    int is_128_bit, uint8_t *out, const uint8_t *in, size_t in_len,
+    const uint8_t tag[16],
+    const struct aead_aes_gcm_siv_asm_ctx *enc_key_expanded) {
+  alignas(16) union {
+    uint8_t c[16];
+    uint32_t u32[4];
+  } counter;
+  OPENSSL_memcpy(&counter, tag, sizeof(counter));
+  counter.c[15] |= 0x80;
+  counter.u32[0] += in_len / 16;
+
+  if (is_128_bit) {
+    aes128gcmsiv_ecb_enc_block(&counter.c[0], &counter.c[0], enc_key_expanded);
+  } else {
+    aes256gcmsiv_ecb_enc_block(&counter.c[0], &counter.c[0], enc_key_expanded);
+  }
+
+  const size_t last_bytes_offset = in_len & ~15;
+  const size_t last_bytes_len = in_len & 15;
+  uint8_t *last_bytes_out = &out[last_bytes_offset];
+  const uint8_t *last_bytes_in = &in[last_bytes_offset];
+  for (size_t i = 0; i < last_bytes_len; i++) {
+    last_bytes_out[i] = last_bytes_in[i] ^ counter.c[i];
+  }
+}
+
+// aead_aes_gcm_siv_kdf calculates the record encryption and authentication
+// keys given the |nonce|.
+static void aead_aes_gcm_siv_kdf(
+    int is_128_bit, const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx,
+    uint64_t out_record_auth_key[2], uint64_t out_record_enc_key[4],
+    const uint8_t nonce[12]) {
+  alignas(16) uint8_t padded_nonce[16];
+  OPENSSL_memcpy(padded_nonce, nonce, 12);
+
+  alignas(16) uint64_t key_material[12];
+  if (is_128_bit) {
+    aes128gcmsiv_kdf(padded_nonce, key_material, &gcm_siv_ctx->key[0]);
+    out_record_enc_key[0] = key_material[4];
+    out_record_enc_key[1] = key_material[6];
+  } else {
+    aes256gcmsiv_kdf(padded_nonce, key_material, &gcm_siv_ctx->key[0]);
+    out_record_enc_key[0] = key_material[4];
+    out_record_enc_key[1] = key_material[6];
+    out_record_enc_key[2] = key_material[8];
+    out_record_enc_key[3] = key_material[10];
+  }
+
+  out_record_auth_key[0] = key_material[0];
+  out_record_auth_key[1] = key_material[2];
+}
+
+static int aead_aes_gcm_siv_asm_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  const uint64_t in_len_64 = in_len;
+  const uint64_t ad_len_64 = ad_len;
+
+  if (in_len_64 > (UINT64_C(1) << 36) ||
+      ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(16) uint64_t record_auth_key[2];
+  alignas(16) uint64_t record_enc_key[4];
+  aead_aes_gcm_siv_kdf(gcm_siv_ctx->is_128_bit, gcm_siv_ctx, record_auth_key,
+                       record_enc_key, nonce);
+
+  alignas(16) uint8_t tag[16] = {0};
+  gcm_siv_asm_polyval(tag, in, in_len, ad, ad_len,
+                      (const uint8_t *)record_auth_key, nonce);
+
+  struct aead_aes_gcm_siv_asm_ctx enc_key_expanded;
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_aes_ks_enc_x1(tag, tag, &enc_key_expanded.key[0],
+                               record_enc_key);
+
+    if (in_len < 128) {
+      aes128gcmsiv_enc_msg_x4(in, out, tag, &enc_key_expanded, in_len & ~15);
+    } else {
+      aes128gcmsiv_enc_msg_x8(in, out, tag, &enc_key_expanded, in_len & ~15);
+    }
+  } else {
+    aes256gcmsiv_aes_ks_enc_x1(tag, tag, &enc_key_expanded.key[0],
+                               record_enc_key);
+
+    if (in_len < 128) {
+      aes256gcmsiv_enc_msg_x4(in, out, tag, &enc_key_expanded, in_len & ~15);
+    } else {
+      aes256gcmsiv_enc_msg_x8(in, out, tag, &enc_key_expanded, in_len & ~15);
+    }
+  }
+
+  if (in_len & 15) {
+    aead_aes_gcm_siv_asm_crypt_last_block(gcm_siv_ctx->is_128_bit, out, in,
+                                          in_len, tag, &enc_key_expanded);
+  }
+
+  OPENSSL_memcpy(out_tag, tag, sizeof(tag));
+  *out_tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+
+  return 1;
+}
+
+// TODO(martinkr): Add aead_aes_gcm_siv_asm_open_gather. N.B. aes128gcmsiv_dec
+// expects ciphertext and tag in a contiguous buffer.
+
+static int aead_aes_gcm_siv_asm_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len) {
+  const uint64_t ad_len_64 = ad_len;
+  if (ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  const uint64_t in_len_64 = in_len;
+  if (in_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN ||
+      in_len_64 > (UINT64_C(1) << 36) + AES_BLOCK_SIZE) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  const struct aead_aes_gcm_siv_asm_ctx *gcm_siv_ctx = asm_ctx_from_ctx(ctx);
+  const size_t plaintext_len = in_len - EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  const uint8_t *const given_tag = in + plaintext_len;
+
+  if (max_out_len < plaintext_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  alignas(16) uint64_t record_auth_key[2];
+  alignas(16) uint64_t record_enc_key[4];
+  aead_aes_gcm_siv_kdf(gcm_siv_ctx->is_128_bit, gcm_siv_ctx, record_auth_key,
+                       record_enc_key, nonce);
+
+  struct aead_aes_gcm_siv_asm_ctx expanded_key;
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_aes_ks((const uint8_t *) record_enc_key, &expanded_key.key[0]);
+  } else {
+    aes256gcmsiv_aes_ks((const uint8_t *) record_enc_key, &expanded_key.key[0]);
+  }
+  // calculated_tag is 16*8 bytes, rather than 16 bytes, because
+  // aes[128|256]gcmsiv_dec uses the extra as scratch space.
+  alignas(16) uint8_t calculated_tag[16 * 8] = {0};
+
+  OPENSSL_memset(calculated_tag, 0, EVP_AEAD_AES_GCM_SIV_TAG_LEN);
+  const size_t ad_blocks = ad_len / 16;
+  aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key, ad,
+                           ad_blocks);
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                             scratch, 1);
+  }
+
+  alignas(16) uint8_t htable[16 * 6];
+  aesgcmsiv_htable6_init(htable, (const uint8_t *)record_auth_key);
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_dec(in, out, calculated_tag, htable, &expanded_key,
+                     plaintext_len);
+  } else {
+    aes256gcmsiv_dec(in, out, calculated_tag, htable, &expanded_key,
+                     plaintext_len);
+  }
+
+  if (plaintext_len & 15) {
+    aead_aes_gcm_siv_asm_crypt_last_block(gcm_siv_ctx->is_128_bit, out, in,
+                                          plaintext_len, given_tag,
+                                          &expanded_key);
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, out + (plaintext_len & ~15), plaintext_len & 15);
+    aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                             scratch, 1);
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = plaintext_len * 8;
+  aesgcmsiv_polyval_horner(calculated_tag, (const uint8_t *)record_auth_key,
+                           length_block.c, 1);
+
+  for (size_t i = 0; i < 12; i++) {
+    calculated_tag[i] ^= nonce[i];
+  }
+
+  calculated_tag[15] &= 0x7f;
+
+  if (gcm_siv_ctx->is_128_bit) {
+    aes128gcmsiv_ecb_enc_block(calculated_tag, calculated_tag, &expanded_key);
+  } else {
+    aes256gcmsiv_ecb_enc_block(calculated_tag, calculated_tag, &expanded_key);
+  }
+
+  if (CRYPTO_memcmp(calculated_tag, given_tag, EVP_AEAD_AES_GCM_SIV_TAG_LEN) !=
+      0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  *out_len = in_len - EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_gcm_siv_asm = {
+    16,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_asm_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_asm_cleanup,
+    aead_aes_gcm_siv_asm_open,
+    aead_aes_gcm_siv_asm_seal_scatter,
+    NULL /* open_gather */,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_gcm_siv_asm = {
+    32,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_asm_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_asm_cleanup,
+    aead_aes_gcm_siv_asm_open,
+    aead_aes_gcm_siv_asm_seal_scatter,
+    NULL /* open_gather */,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+#endif  // X86_64 && !NO_ASM && !WINDOWS
+
+struct aead_aes_gcm_siv_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  block128_f kgk_block;
+  unsigned is_256:1;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_siv_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_siv_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_siv_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                 size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+  }
+  if (tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+  OPENSSL_memset(gcm_siv_ctx, 0, sizeof(struct aead_aes_gcm_siv_ctx));
+
+  aes_ctr_set_key(&gcm_siv_ctx->ks.ks, NULL, &gcm_siv_ctx->kgk_block, key,
+                  key_len);
+  gcm_siv_ctx->is_256 = (key_len == 32);
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_aes_gcm_siv_cleanup(EVP_AEAD_CTX *ctx) {}
+
+// gcm_siv_crypt encrypts (or decrypts—it's the same thing) |in_len| bytes from
+// |in| to |out|, using the block function |enc_block| with |key| in counter
+// mode, starting at |initial_counter|. This differs from the traditional
+// counter mode code in that the counter is handled little-endian, only the
+// first four bytes are used and the GCM-SIV tweak to the final byte is
+// applied. The |in| and |out| pointers may be equal but otherwise must not
+// alias.
+static void gcm_siv_crypt(uint8_t *out, const uint8_t *in, size_t in_len,
+                          const uint8_t initial_counter[AES_BLOCK_SIZE],
+                          block128_f enc_block, const AES_KEY *key) {
+  union {
+    uint32_t w[4];
+    uint8_t c[16];
+  } counter;
+
+  OPENSSL_memcpy(counter.c, initial_counter, AES_BLOCK_SIZE);
+  counter.c[15] |= 0x80;
+
+  for (size_t done = 0; done < in_len;) {
+    uint8_t keystream[AES_BLOCK_SIZE];
+    enc_block(counter.c, keystream, key);
+    counter.w[0]++;
+
+    size_t todo = AES_BLOCK_SIZE;
+    if (in_len - done < todo) {
+      todo = in_len - done;
+    }
+
+    for (size_t i = 0; i < todo; i++) {
+      out[done + i] = keystream[i] ^ in[done + i];
+    }
+
+    done += todo;
+  }
+}
+
+// gcm_siv_polyval evaluates POLYVAL at |auth_key| on the given plaintext and
+// AD. The result is written to |out_tag|.
+static void gcm_siv_polyval(
+    uint8_t out_tag[16], const uint8_t *in, size_t in_len, const uint8_t *ad,
+    size_t ad_len, const uint8_t auth_key[16],
+    const uint8_t nonce[EVP_AEAD_AES_GCM_SIV_NONCE_LEN]) {
+  struct polyval_ctx polyval_ctx;
+  CRYPTO_POLYVAL_init(&polyval_ctx, auth_key);
+
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, ad, ad_len & ~15);
+
+  uint8_t scratch[16];
+  if (ad_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &ad[ad_len & ~15], ad_len & 15);
+    CRYPTO_POLYVAL_update_blocks(&polyval_ctx, scratch, sizeof(scratch));
+  }
+
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, in, in_len & ~15);
+  if (in_len & 15) {
+    OPENSSL_memset(scratch, 0, sizeof(scratch));
+    OPENSSL_memcpy(scratch, &in[in_len & ~15], in_len & 15);
+    CRYPTO_POLYVAL_update_blocks(&polyval_ctx, scratch, sizeof(scratch));
+  }
+
+  union {
+    uint8_t c[16];
+    struct {
+      uint64_t ad;
+      uint64_t in;
+    } bitlens;
+  } length_block;
+
+  length_block.bitlens.ad = ad_len * 8;
+  length_block.bitlens.in = in_len * 8;
+  CRYPTO_POLYVAL_update_blocks(&polyval_ctx, length_block.c,
+                               sizeof(length_block));
+
+  CRYPTO_POLYVAL_finish(&polyval_ctx, out_tag);
+  for (size_t i = 0; i < EVP_AEAD_AES_GCM_SIV_NONCE_LEN; i++) {
+    out_tag[i] ^= nonce[i];
+  }
+  out_tag[15] &= 0x7f;
+}
+
+// gcm_siv_record_keys contains the keys used for a specific GCM-SIV record.
+struct gcm_siv_record_keys {
+  uint8_t auth_key[16];
+  union {
+    double align;
+    AES_KEY ks;
+  } enc_key;
+  block128_f enc_block;
+};
+
+// gcm_siv_keys calculates the keys for a specific GCM-SIV record with the
+// given nonce and writes them to |*out_keys|.
+static void gcm_siv_keys(
+    const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx,
+    struct gcm_siv_record_keys *out_keys,
+    const uint8_t nonce[EVP_AEAD_AES_GCM_SIV_NONCE_LEN]) {
+  const AES_KEY *const key = &gcm_siv_ctx->ks.ks;
+  uint8_t key_material[(128 /* POLYVAL key */ + 256 /* max AES key */) / 8];
+  const size_t blocks_needed = gcm_siv_ctx->is_256 ? 6 : 4;
+
+  uint8_t counter[AES_BLOCK_SIZE];
+  OPENSSL_memset(counter, 0, AES_BLOCK_SIZE - EVP_AEAD_AES_GCM_SIV_NONCE_LEN);
+  OPENSSL_memcpy(counter + AES_BLOCK_SIZE - EVP_AEAD_AES_GCM_SIV_NONCE_LEN,
+                 nonce, EVP_AEAD_AES_GCM_SIV_NONCE_LEN);
+  for (size_t i = 0; i < blocks_needed; i++) {
+    counter[0] = i;
+
+    uint8_t ciphertext[AES_BLOCK_SIZE];
+    gcm_siv_ctx->kgk_block(counter, ciphertext, key);
+    OPENSSL_memcpy(&key_material[i * 8], ciphertext, 8);
+  }
+
+  OPENSSL_memcpy(out_keys->auth_key, key_material, 16);
+  // Note the |ctr128_f| function uses a big-endian couner, while AES-GCM-SIV
+  // uses a little-endian counter. We ignore the return value and only use
+  // |block128_f|. This has a significant performance cost for the fallback
+  // bitsliced AES implementations (bsaes and aes_nohw).
+  //
+  // We currently do not consider AES-GCM-SIV to be performance-sensitive on
+  // client hardware. If this changes, we can write little-endian |ctr128_f|
+  // functions.
+  aes_ctr_set_key(&out_keys->enc_key.ks, NULL, &out_keys->enc_block,
+                  key_material + 16, gcm_siv_ctx->is_256 ? 32 : 16);
+}
+
+static int aead_aes_gcm_siv_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+  const uint64_t in_len_64 = in_len;
+  const uint64_t ad_len_64 = ad_len;
+
+  if (in_len + EVP_AEAD_AES_GCM_SIV_TAG_LEN < in_len ||
+      in_len_64 > (UINT64_C(1) << 36) ||
+      ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < EVP_AEAD_AES_GCM_SIV_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  struct gcm_siv_record_keys keys;
+  gcm_siv_keys(gcm_siv_ctx, &keys, nonce);
+
+  uint8_t tag[16];
+  gcm_siv_polyval(tag, in, in_len, ad, ad_len, keys.auth_key, nonce);
+  keys.enc_block(tag, tag, &keys.enc_key.ks);
+
+  gcm_siv_crypt(out, in, in_len, tag, keys.enc_block, &keys.enc_key.ks);
+
+  OPENSSL_memcpy(out_tag, tag, EVP_AEAD_AES_GCM_SIV_TAG_LEN);
+  *out_tag_len = EVP_AEAD_AES_GCM_SIV_TAG_LEN;
+
+  return 1;
+}
+
+static int aead_aes_gcm_siv_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                        const uint8_t *nonce, size_t nonce_len,
+                                        const uint8_t *in, size_t in_len,
+                                        const uint8_t *in_tag,
+                                        size_t in_tag_len, const uint8_t *ad,
+                                        size_t ad_len) {
+  const uint64_t ad_len_64 = ad_len;
+  if (ad_len_64 >= (UINT64_C(1) << 61)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  const uint64_t in_len_64 = in_len;
+  if (in_tag_len != EVP_AEAD_AES_GCM_SIV_TAG_LEN ||
+      in_len_64 > (UINT64_C(1) << 36) + AES_BLOCK_SIZE) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_AES_GCM_SIV_NONCE_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  const struct aead_aes_gcm_siv_ctx *gcm_siv_ctx =
+      (struct aead_aes_gcm_siv_ctx *)&ctx->state;
+
+  struct gcm_siv_record_keys keys;
+  gcm_siv_keys(gcm_siv_ctx, &keys, nonce);
+
+  gcm_siv_crypt(out, in, in_len, in_tag, keys.enc_block, &keys.enc_key.ks);
+
+  uint8_t expected_tag[EVP_AEAD_AES_GCM_SIV_TAG_LEN];
+  gcm_siv_polyval(expected_tag, out, in_len, ad, ad_len, keys.auth_key, nonce);
+  keys.enc_block(expected_tag, expected_tag, &keys.enc_key.ks);
+
+  if (CRYPTO_memcmp(expected_tag, in_tag, sizeof(expected_tag)) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static const EVP_AEAD aead_aes_128_gcm_siv = {
+    16,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_cleanup,
+    NULL /* open */,
+    aead_aes_gcm_siv_seal_scatter,
+    aead_aes_gcm_siv_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+static const EVP_AEAD aead_aes_256_gcm_siv = {
+    32,                              // key length
+    EVP_AEAD_AES_GCM_SIV_NONCE_LEN,  // nonce length
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // overhead
+    EVP_AEAD_AES_GCM_SIV_TAG_LEN,    // max tag length
+    0,                               // seal_scatter_supports_extra_in
+
+    aead_aes_gcm_siv_init,
+    NULL /* init_with_direction */,
+    aead_aes_gcm_siv_cleanup,
+    NULL /* open */,
+    aead_aes_gcm_siv_seal_scatter,
+    aead_aes_gcm_siv_open_gather,
+    NULL /* get_iv */,
+    NULL /* tag_len */,
+};
+
+#if defined(AES_GCM_SIV_ASM)
+
+static char avx_aesni_capable(void) {
+  const uint32_t ecx = OPENSSL_ia32cap_P[1];
+
+  return (ecx & (1 << (57 - 32))) != 0 /* AESNI */ &&
+         (ecx & (1 << 28)) != 0 /* AVX */;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void) {
+  if (avx_aesni_capable()) {
+    return &aead_aes_128_gcm_siv_asm;
+  }
+  return &aead_aes_128_gcm_siv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void) {
+  if (avx_aesni_capable()) {
+    return &aead_aes_256_gcm_siv_asm;
+  }
+  return &aead_aes_256_gcm_siv;
+}
+
+#else
+
+const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void) {
+  return &aead_aes_128_gcm_siv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void) {
+  return &aead_aes_256_gcm_siv;
+}
+
+#endif  // AES_GCM_SIV_ASM
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c
new file mode 100644
index 0000000..cb0ee40
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c	
@@ -0,0 +1,418 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/aead.h>
+
+#include <string.h>
+
+#include <openssl_grpc/chacha.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/poly1305.h>
+#include <openssl_grpc/type_check.h>
+
+#include "../fipsmodule/cipher/internal.h"
+#include "../internal.h"
+#include "../chacha/internal.h"
+
+
+#define POLY1305_TAG_LEN 16
+
+struct aead_chacha20_poly1305_ctx {
+  uint8_t key[32];
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_chacha20_poly1305_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_chacha20_poly1305_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+// For convenience (the x86_64 calling convention allows only six parameters in
+// registers), the final parameter for the assembly functions is both an input
+// and output parameter.
+union open_data {
+  struct {
+    alignas(16) uint8_t key[32];
+    uint32_t counter;
+    uint8_t nonce[12];
+  } in;
+  struct {
+    uint8_t tag[POLY1305_TAG_LEN];
+  } out;
+};
+
+union seal_data {
+  struct {
+    alignas(16) uint8_t key[32];
+    uint32_t counter;
+    uint8_t nonce[12];
+    const uint8_t *extra_ciphertext;
+    size_t extra_ciphertext_len;
+  } in;
+  struct {
+    uint8_t tag[POLY1305_TAG_LEN];
+  } out;
+};
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(OPENSSL_WINDOWS)
+static int asm_capable(void) {
+  const int sse41_capable = (OPENSSL_ia32cap_P[1] & (1 << 19)) != 0;
+  return sse41_capable;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(union open_data) == 48, "wrong open_data size");
+OPENSSL_STATIC_ASSERT(sizeof(union seal_data) == 48 + 8 + 8,
+                      "wrong seal_data size");
+
+// chacha20_poly1305_open is defined in chacha20_poly1305_x86_64.pl. It decrypts
+// |plaintext_len| bytes from |ciphertext| and writes them to |out_plaintext|.
+// Additional input parameters are passed in |aead_data->in|. On exit, it will
+// write calculated tag value to |aead_data->out.tag|, which the caller must
+// check.
+extern void chacha20_poly1305_open(uint8_t *out_plaintext,
+                                   const uint8_t *ciphertext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union open_data *aead_data);
+
+// chacha20_poly1305_open is defined in chacha20_poly1305_x86_64.pl. It encrypts
+// |plaintext_len| bytes from |plaintext| and writes them to |out_ciphertext|.
+// Additional input parameters are passed in |aead_data->in|. The calculated tag
+// value is over the computed ciphertext concatenated with |extra_ciphertext|
+// and written to |aead_data->out.tag|.
+extern void chacha20_poly1305_seal(uint8_t *out_ciphertext,
+                                   const uint8_t *plaintext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union seal_data *aead_data);
+#else
+static int asm_capable(void) { return 0; }
+
+
+static void chacha20_poly1305_open(uint8_t *out_plaintext,
+                                   const uint8_t *ciphertext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union open_data *aead_data) {}
+
+static void chacha20_poly1305_seal(uint8_t *out_ciphertext,
+                                   const uint8_t *plaintext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union seal_data *aead_data) {}
+#endif
+
+static int aead_chacha20_poly1305_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                       size_t key_len, size_t tag_len) {
+  struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (tag_len == 0) {
+    tag_len = POLY1305_TAG_LEN;
+  }
+
+  if (tag_len > POLY1305_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (key_len != sizeof(c20_ctx->key)) {
+    return 0;  // internal error - EVP_AEAD_CTX_init should catch this.
+  }
+
+  OPENSSL_memcpy(c20_ctx->key, key, key_len);
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_chacha20_poly1305_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static void poly1305_update_length(poly1305_state *poly1305, size_t data_len) {
+  uint8_t length_bytes[8];
+
+  for (unsigned i = 0; i < sizeof(length_bytes); i++) {
+    length_bytes[i] = data_len;
+    data_len >>= 8;
+  }
+
+  CRYPTO_poly1305_update(poly1305, length_bytes, sizeof(length_bytes));
+}
+
+// calc_tag fills |tag| with the authentication tag for the given inputs.
+static void calc_tag(uint8_t tag[POLY1305_TAG_LEN], const uint8_t *key,
+                     const uint8_t nonce[12], const uint8_t *ad, size_t ad_len,
+                     const uint8_t *ciphertext, size_t ciphertext_len,
+                     const uint8_t *ciphertext_extra,
+                     size_t ciphertext_extra_len) {
+  alignas(16) uint8_t poly1305_key[32];
+  OPENSSL_memset(poly1305_key, 0, sizeof(poly1305_key));
+  CRYPTO_chacha_20(poly1305_key, poly1305_key, sizeof(poly1305_key), key, nonce,
+                   0);
+
+  static const uint8_t padding[16] = { 0 };  // Padding is all zeros.
+  poly1305_state ctx;
+  CRYPTO_poly1305_init(&ctx, poly1305_key);
+  CRYPTO_poly1305_update(&ctx, ad, ad_len);
+  if (ad_len % 16 != 0) {
+    CRYPTO_poly1305_update(&ctx, padding, sizeof(padding) - (ad_len % 16));
+  }
+  CRYPTO_poly1305_update(&ctx, ciphertext, ciphertext_len);
+  CRYPTO_poly1305_update(&ctx, ciphertext_extra, ciphertext_extra_len);
+  const size_t ciphertext_total = ciphertext_len + ciphertext_extra_len;
+  if (ciphertext_total % 16 != 0) {
+    CRYPTO_poly1305_update(&ctx, padding,
+                           sizeof(padding) - (ciphertext_total % 16));
+  }
+  poly1305_update_length(&ctx, ad_len);
+  poly1305_update_length(&ctx, ciphertext_total);
+  CRYPTO_poly1305_finish(&ctx, tag);
+}
+
+static int chacha20_poly1305_seal_scatter(
+    const uint8_t *key, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len, size_t tag_len) {
+  if (extra_in_len + tag_len < tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+  if (max_out_tag_len < tag_len + extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // |CRYPTO_chacha_20| uses a 32-bit block counter. Therefore we disallow
+  // individual operations that work on more than 256GB at a time.
+  // |in_len_64| is needed because, on 32-bit platforms, size_t is only
+  // 32-bits and this produces a warning because it's always false.
+  // Casting to uint64_t inside the conditional is not sufficient to stop
+  // the warning.
+  const uint64_t in_len_64 = in_len;
+  if (in_len_64 >= (UINT64_C(1) << 32) * 64 - 64) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  // The the extra input is given, it is expected to be very short and so is
+  // encrypted byte-by-byte first.
+  if (extra_in_len) {
+    static const size_t kChaChaBlockSize = 64;
+    uint32_t block_counter = 1 + (in_len / kChaChaBlockSize);
+    size_t offset = in_len % kChaChaBlockSize;
+    uint8_t block[64 /* kChaChaBlockSize */];
+
+    for (size_t done = 0; done < extra_in_len; block_counter++) {
+      memset(block, 0, sizeof(block));
+      CRYPTO_chacha_20(block, block, sizeof(block), key, nonce,
+                       block_counter);
+      for (size_t i = offset; i < sizeof(block) && done < extra_in_len;
+           i++, done++) {
+        out_tag[done] = extra_in[done] ^ block[i];
+      }
+      offset = 0;
+    }
+  }
+
+  union seal_data data;
+  if (asm_capable()) {
+    OPENSSL_memcpy(data.in.key, key, 32);
+    data.in.counter = 0;
+    OPENSSL_memcpy(data.in.nonce, nonce, 12);
+    data.in.extra_ciphertext = out_tag;
+    data.in.extra_ciphertext_len = extra_in_len;
+    chacha20_poly1305_seal(out, in, in_len, ad, ad_len, &data);
+  } else {
+    CRYPTO_chacha_20(out, in, in_len, key, nonce, 1);
+    calc_tag(data.out.tag, key, nonce, ad, ad_len, out, in_len, out_tag,
+             extra_in_len);
+  }
+
+  OPENSSL_memcpy(out_tag + extra_in_len, data.out.tag, tag_len);
+  *out_tag_len = extra_in_len + tag_len;
+  return 1;
+}
+
+static int aead_chacha20_poly1305_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  return chacha20_poly1305_seal_scatter(
+      c20_ctx->key, out, out_tag, out_tag_len, max_out_tag_len, nonce,
+      nonce_len, in, in_len, extra_in, extra_in_len, ad, ad_len, ctx->tag_len);
+}
+
+static int aead_xchacha20_poly1305_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (nonce_len != 24) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(4) uint8_t derived_key[32];
+  alignas(4) uint8_t derived_nonce[12];
+  CRYPTO_hchacha20(derived_key, c20_ctx->key, nonce);
+  OPENSSL_memset(derived_nonce, 0, 4);
+  OPENSSL_memcpy(&derived_nonce[4], &nonce[16], 8);
+
+  return chacha20_poly1305_seal_scatter(
+      derived_key, out, out_tag, out_tag_len, max_out_tag_len,
+      derived_nonce, sizeof(derived_nonce), in, in_len, extra_in, extra_in_len,
+      ad, ad_len, ctx->tag_len);
+}
+
+static int chacha20_poly1305_open_gather(
+    const uint8_t *key, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len, size_t tag_len) {
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  // |CRYPTO_chacha_20| uses a 32-bit block counter. Therefore we disallow
+  // individual operations that work on more than 256GB at a time.
+  // |in_len_64| is needed because, on 32-bit platforms, size_t is only
+  // 32-bits and this produces a warning because it's always false.
+  // Casting to uint64_t inside the conditional is not sufficient to stop
+  // the warning.
+  const uint64_t in_len_64 = in_len;
+  if (in_len_64 >= (UINT64_C(1) << 32) * 64 - 64) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  union open_data data;
+  if (asm_capable()) {
+    OPENSSL_memcpy(data.in.key, key, 32);
+    data.in.counter = 0;
+    OPENSSL_memcpy(data.in.nonce, nonce, 12);
+    chacha20_poly1305_open(out, in, in_len, ad, ad_len, &data);
+  } else {
+    calc_tag(data.out.tag, key, nonce, ad, ad_len, in, in_len, NULL, 0);
+    CRYPTO_chacha_20(out, in, in_len, key, nonce, 1);
+  }
+
+  if (CRYPTO_memcmp(data.out.tag, in_tag, tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aead_chacha20_poly1305_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  return chacha20_poly1305_open_gather(c20_ctx->key, out, nonce, nonce_len, in,
+                                       in_len, in_tag, in_tag_len, ad, ad_len,
+                                       ctx->tag_len);
+}
+
+static int aead_xchacha20_poly1305_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (nonce_len != 24) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(4) uint8_t derived_key[32];
+  alignas(4) uint8_t derived_nonce[12];
+  CRYPTO_hchacha20(derived_key, c20_ctx->key, nonce);
+  OPENSSL_memset(derived_nonce, 0, 4);
+  OPENSSL_memcpy(&derived_nonce[4], &nonce[16], 8);
+
+  return chacha20_poly1305_open_gather(
+      derived_key, out, derived_nonce, sizeof(derived_nonce), in, in_len,
+      in_tag, in_tag_len, ad, ad_len, ctx->tag_len);
+}
+
+static const EVP_AEAD aead_chacha20_poly1305 = {
+    32,                // key len
+    12,                // nonce len
+    POLY1305_TAG_LEN,  // overhead
+    POLY1305_TAG_LEN,  // max tag length
+    1,                 // seal_scatter_supports_extra_in
+
+    aead_chacha20_poly1305_init,
+    NULL,  // init_with_direction
+    aead_chacha20_poly1305_cleanup,
+    NULL /* open */,
+    aead_chacha20_poly1305_seal_scatter,
+    aead_chacha20_poly1305_open_gather,
+    NULL,  // get_iv
+    NULL,  // tag_len
+};
+
+static const EVP_AEAD aead_xchacha20_poly1305 = {
+    32,                // key len
+    24,                // nonce len
+    POLY1305_TAG_LEN,  // overhead
+    POLY1305_TAG_LEN,  // max tag length
+    1,                 // seal_scatter_supports_extra_in
+
+    aead_chacha20_poly1305_init,
+    NULL,  // init_with_direction
+    aead_chacha20_poly1305_cleanup,
+    NULL /* open */,
+    aead_xchacha20_poly1305_seal_scatter,
+    aead_xchacha20_poly1305_open_gather,
+    NULL,  // get_iv
+    NULL,  // tag_len
+};
+
+const EVP_AEAD *EVP_aead_chacha20_poly1305(void) {
+  return &aead_chacha20_poly1305;
+}
+
+const EVP_AEAD *EVP_aead_xchacha20_poly1305(void) {
+  return &aead_xchacha20_poly1305;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c.grpc_back
new file mode 100644
index 0000000..1c175e9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_chacha20poly1305.c.grpc_back	
@@ -0,0 +1,418 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/aead.h>
+
+#include <string.h>
+
+#include <openssl/chacha.h>
+#include <openssl/cipher.h>
+#include <openssl/cpu.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/poly1305.h>
+#include <openssl/type_check.h>
+
+#include "../fipsmodule/cipher/internal.h"
+#include "../internal.h"
+#include "../chacha/internal.h"
+
+
+#define POLY1305_TAG_LEN 16
+
+struct aead_chacha20_poly1305_ctx {
+  uint8_t key[32];
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_chacha20_poly1305_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_chacha20_poly1305_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+// For convenience (the x86_64 calling convention allows only six parameters in
+// registers), the final parameter for the assembly functions is both an input
+// and output parameter.
+union open_data {
+  struct {
+    alignas(16) uint8_t key[32];
+    uint32_t counter;
+    uint8_t nonce[12];
+  } in;
+  struct {
+    uint8_t tag[POLY1305_TAG_LEN];
+  } out;
+};
+
+union seal_data {
+  struct {
+    alignas(16) uint8_t key[32];
+    uint32_t counter;
+    uint8_t nonce[12];
+    const uint8_t *extra_ciphertext;
+    size_t extra_ciphertext_len;
+  } in;
+  struct {
+    uint8_t tag[POLY1305_TAG_LEN];
+  } out;
+};
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(OPENSSL_WINDOWS)
+static int asm_capable(void) {
+  const int sse41_capable = (OPENSSL_ia32cap_P[1] & (1 << 19)) != 0;
+  return sse41_capable;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(union open_data) == 48, "wrong open_data size");
+OPENSSL_STATIC_ASSERT(sizeof(union seal_data) == 48 + 8 + 8,
+                      "wrong seal_data size");
+
+// chacha20_poly1305_open is defined in chacha20_poly1305_x86_64.pl. It decrypts
+// |plaintext_len| bytes from |ciphertext| and writes them to |out_plaintext|.
+// Additional input parameters are passed in |aead_data->in|. On exit, it will
+// write calculated tag value to |aead_data->out.tag|, which the caller must
+// check.
+extern void chacha20_poly1305_open(uint8_t *out_plaintext,
+                                   const uint8_t *ciphertext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union open_data *aead_data);
+
+// chacha20_poly1305_open is defined in chacha20_poly1305_x86_64.pl. It encrypts
+// |plaintext_len| bytes from |plaintext| and writes them to |out_ciphertext|.
+// Additional input parameters are passed in |aead_data->in|. The calculated tag
+// value is over the computed ciphertext concatenated with |extra_ciphertext|
+// and written to |aead_data->out.tag|.
+extern void chacha20_poly1305_seal(uint8_t *out_ciphertext,
+                                   const uint8_t *plaintext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union seal_data *aead_data);
+#else
+static int asm_capable(void) { return 0; }
+
+
+static void chacha20_poly1305_open(uint8_t *out_plaintext,
+                                   const uint8_t *ciphertext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union open_data *aead_data) {}
+
+static void chacha20_poly1305_seal(uint8_t *out_ciphertext,
+                                   const uint8_t *plaintext,
+                                   size_t plaintext_len, const uint8_t *ad,
+                                   size_t ad_len, union seal_data *aead_data) {}
+#endif
+
+static int aead_chacha20_poly1305_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                       size_t key_len, size_t tag_len) {
+  struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (tag_len == 0) {
+    tag_len = POLY1305_TAG_LEN;
+  }
+
+  if (tag_len > POLY1305_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (key_len != sizeof(c20_ctx->key)) {
+    return 0;  // internal error - EVP_AEAD_CTX_init should catch this.
+  }
+
+  OPENSSL_memcpy(c20_ctx->key, key, key_len);
+  ctx->tag_len = tag_len;
+
+  return 1;
+}
+
+static void aead_chacha20_poly1305_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static void poly1305_update_length(poly1305_state *poly1305, size_t data_len) {
+  uint8_t length_bytes[8];
+
+  for (unsigned i = 0; i < sizeof(length_bytes); i++) {
+    length_bytes[i] = data_len;
+    data_len >>= 8;
+  }
+
+  CRYPTO_poly1305_update(poly1305, length_bytes, sizeof(length_bytes));
+}
+
+// calc_tag fills |tag| with the authentication tag for the given inputs.
+static void calc_tag(uint8_t tag[POLY1305_TAG_LEN], const uint8_t *key,
+                     const uint8_t nonce[12], const uint8_t *ad, size_t ad_len,
+                     const uint8_t *ciphertext, size_t ciphertext_len,
+                     const uint8_t *ciphertext_extra,
+                     size_t ciphertext_extra_len) {
+  alignas(16) uint8_t poly1305_key[32];
+  OPENSSL_memset(poly1305_key, 0, sizeof(poly1305_key));
+  CRYPTO_chacha_20(poly1305_key, poly1305_key, sizeof(poly1305_key), key, nonce,
+                   0);
+
+  static const uint8_t padding[16] = { 0 };  // Padding is all zeros.
+  poly1305_state ctx;
+  CRYPTO_poly1305_init(&ctx, poly1305_key);
+  CRYPTO_poly1305_update(&ctx, ad, ad_len);
+  if (ad_len % 16 != 0) {
+    CRYPTO_poly1305_update(&ctx, padding, sizeof(padding) - (ad_len % 16));
+  }
+  CRYPTO_poly1305_update(&ctx, ciphertext, ciphertext_len);
+  CRYPTO_poly1305_update(&ctx, ciphertext_extra, ciphertext_extra_len);
+  const size_t ciphertext_total = ciphertext_len + ciphertext_extra_len;
+  if (ciphertext_total % 16 != 0) {
+    CRYPTO_poly1305_update(&ctx, padding,
+                           sizeof(padding) - (ciphertext_total % 16));
+  }
+  poly1305_update_length(&ctx, ad_len);
+  poly1305_update_length(&ctx, ciphertext_total);
+  CRYPTO_poly1305_finish(&ctx, tag);
+}
+
+static int chacha20_poly1305_seal_scatter(
+    const uint8_t *key, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len, size_t tag_len) {
+  if (extra_in_len + tag_len < tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+  if (max_out_tag_len < tag_len + extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // |CRYPTO_chacha_20| uses a 32-bit block counter. Therefore we disallow
+  // individual operations that work on more than 256GB at a time.
+  // |in_len_64| is needed because, on 32-bit platforms, size_t is only
+  // 32-bits and this produces a warning because it's always false.
+  // Casting to uint64_t inside the conditional is not sufficient to stop
+  // the warning.
+  const uint64_t in_len_64 = in_len;
+  if (in_len_64 >= (UINT64_C(1) << 32) * 64 - 64) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  // The the extra input is given, it is expected to be very short and so is
+  // encrypted byte-by-byte first.
+  if (extra_in_len) {
+    static const size_t kChaChaBlockSize = 64;
+    uint32_t block_counter = 1 + (in_len / kChaChaBlockSize);
+    size_t offset = in_len % kChaChaBlockSize;
+    uint8_t block[64 /* kChaChaBlockSize */];
+
+    for (size_t done = 0; done < extra_in_len; block_counter++) {
+      memset(block, 0, sizeof(block));
+      CRYPTO_chacha_20(block, block, sizeof(block), key, nonce,
+                       block_counter);
+      for (size_t i = offset; i < sizeof(block) && done < extra_in_len;
+           i++, done++) {
+        out_tag[done] = extra_in[done] ^ block[i];
+      }
+      offset = 0;
+    }
+  }
+
+  union seal_data data;
+  if (asm_capable()) {
+    OPENSSL_memcpy(data.in.key, key, 32);
+    data.in.counter = 0;
+    OPENSSL_memcpy(data.in.nonce, nonce, 12);
+    data.in.extra_ciphertext = out_tag;
+    data.in.extra_ciphertext_len = extra_in_len;
+    chacha20_poly1305_seal(out, in, in_len, ad, ad_len, &data);
+  } else {
+    CRYPTO_chacha_20(out, in, in_len, key, nonce, 1);
+    calc_tag(data.out.tag, key, nonce, ad, ad_len, out, in_len, out_tag,
+             extra_in_len);
+  }
+
+  OPENSSL_memcpy(out_tag + extra_in_len, data.out.tag, tag_len);
+  *out_tag_len = extra_in_len + tag_len;
+  return 1;
+}
+
+static int aead_chacha20_poly1305_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  return chacha20_poly1305_seal_scatter(
+      c20_ctx->key, out, out_tag, out_tag_len, max_out_tag_len, nonce,
+      nonce_len, in, in_len, extra_in, extra_in_len, ad, ad_len, ctx->tag_len);
+}
+
+static int aead_xchacha20_poly1305_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (nonce_len != 24) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(4) uint8_t derived_key[32];
+  alignas(4) uint8_t derived_nonce[12];
+  CRYPTO_hchacha20(derived_key, c20_ctx->key, nonce);
+  OPENSSL_memset(derived_nonce, 0, 4);
+  OPENSSL_memcpy(&derived_nonce[4], &nonce[16], 8);
+
+  return chacha20_poly1305_seal_scatter(
+      derived_key, out, out_tag, out_tag_len, max_out_tag_len,
+      derived_nonce, sizeof(derived_nonce), in, in_len, extra_in, extra_in_len,
+      ad, ad_len, ctx->tag_len);
+}
+
+static int chacha20_poly1305_open_gather(
+    const uint8_t *key, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len, size_t tag_len) {
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  // |CRYPTO_chacha_20| uses a 32-bit block counter. Therefore we disallow
+  // individual operations that work on more than 256GB at a time.
+  // |in_len_64| is needed because, on 32-bit platforms, size_t is only
+  // 32-bits and this produces a warning because it's always false.
+  // Casting to uint64_t inside the conditional is not sufficient to stop
+  // the warning.
+  const uint64_t in_len_64 = in_len;
+  if (in_len_64 >= (UINT64_C(1) << 32) * 64 - 64) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  union open_data data;
+  if (asm_capable()) {
+    OPENSSL_memcpy(data.in.key, key, 32);
+    data.in.counter = 0;
+    OPENSSL_memcpy(data.in.nonce, nonce, 12);
+    chacha20_poly1305_open(out, in, in_len, ad, ad_len, &data);
+  } else {
+    calc_tag(data.out.tag, key, nonce, ad, ad_len, in, in_len, NULL, 0);
+    CRYPTO_chacha_20(out, in, in_len, key, nonce, 1);
+  }
+
+  if (CRYPTO_memcmp(data.out.tag, in_tag, tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aead_chacha20_poly1305_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  return chacha20_poly1305_open_gather(c20_ctx->key, out, nonce, nonce_len, in,
+                                       in_len, in_tag, in_tag_len, ad, ad_len,
+                                       ctx->tag_len);
+}
+
+static int aead_xchacha20_poly1305_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len) {
+  const struct aead_chacha20_poly1305_ctx *c20_ctx =
+      (struct aead_chacha20_poly1305_ctx *)&ctx->state;
+
+  if (nonce_len != 24) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  alignas(4) uint8_t derived_key[32];
+  alignas(4) uint8_t derived_nonce[12];
+  CRYPTO_hchacha20(derived_key, c20_ctx->key, nonce);
+  OPENSSL_memset(derived_nonce, 0, 4);
+  OPENSSL_memcpy(&derived_nonce[4], &nonce[16], 8);
+
+  return chacha20_poly1305_open_gather(
+      derived_key, out, derived_nonce, sizeof(derived_nonce), in, in_len,
+      in_tag, in_tag_len, ad, ad_len, ctx->tag_len);
+}
+
+static const EVP_AEAD aead_chacha20_poly1305 = {
+    32,                // key len
+    12,                // nonce len
+    POLY1305_TAG_LEN,  // overhead
+    POLY1305_TAG_LEN,  // max tag length
+    1,                 // seal_scatter_supports_extra_in
+
+    aead_chacha20_poly1305_init,
+    NULL,  // init_with_direction
+    aead_chacha20_poly1305_cleanup,
+    NULL /* open */,
+    aead_chacha20_poly1305_seal_scatter,
+    aead_chacha20_poly1305_open_gather,
+    NULL,  // get_iv
+    NULL,  // tag_len
+};
+
+static const EVP_AEAD aead_xchacha20_poly1305 = {
+    32,                // key len
+    24,                // nonce len
+    POLY1305_TAG_LEN,  // overhead
+    POLY1305_TAG_LEN,  // max tag length
+    1,                 // seal_scatter_supports_extra_in
+
+    aead_chacha20_poly1305_init,
+    NULL,  // init_with_direction
+    aead_chacha20_poly1305_cleanup,
+    NULL /* open */,
+    aead_xchacha20_poly1305_seal_scatter,
+    aead_xchacha20_poly1305_open_gather,
+    NULL,  // get_iv
+    NULL,  // tag_len
+};
+
+const EVP_AEAD *EVP_aead_chacha20_poly1305(void) {
+  return &aead_chacha20_poly1305;
+}
+
+const EVP_AEAD *EVP_aead_xchacha20_poly1305(void) {
+  return &aead_xchacha20_poly1305;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c
new file mode 100644
index 0000000..3822dc3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c	
@@ -0,0 +1,85 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+
+#include <string.h>
+
+#include <openssl_grpc/nid.h>
+
+#include "../internal.h"
+
+
+static int null_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                         const uint8_t *iv, int enc) {
+  return 1;
+}
+
+static int null_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                       const uint8_t *in, size_t in_len) {
+  if (in != out) {
+    OPENSSL_memcpy(out, in, in_len);
+  }
+  return 1;
+}
+
+static const EVP_CIPHER n_cipher = {
+    NID_undef,        1 /* block size */, 0 /* key_len */,     0 /* iv_len */,
+    0 /* ctx_size */, 0 /* flags */,      NULL /* app_data */, null_init_key,
+    null_cipher,      NULL /* cleanup */, NULL /* ctrl */,
+};
+
+const EVP_CIPHER *EVP_enc_null(void) { return &n_cipher; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c.grpc_back
new file mode 100644
index 0000000..f5fe8fb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_null.c.grpc_back	
@@ -0,0 +1,85 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+
+#include <string.h>
+
+#include <openssl/nid.h>
+
+#include "../internal.h"
+
+
+static int null_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                         const uint8_t *iv, int enc) {
+  return 1;
+}
+
+static int null_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                       const uint8_t *in, size_t in_len) {
+  if (in != out) {
+    OPENSSL_memcpy(out, in, in_len);
+  }
+  return 1;
+}
+
+static const EVP_CIPHER n_cipher = {
+    NID_undef,        1 /* block size */, 0 /* key_len */,     0 /* iv_len */,
+    0 /* ctx_size */, 0 /* flags */,      NULL /* app_data */, null_init_key,
+    null_cipher,      NULL /* cleanup */, NULL /* ctrl */,
+};
+
+const EVP_CIPHER *EVP_enc_null(void) { return &n_cipher; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c
new file mode 100644
index 0000000..c9f789a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c	
@@ -0,0 +1,462 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/nid.h>
+
+#include "../internal.h"
+
+
+#define c2l(c, l)                         \
+  do {                                    \
+    (l) = ((uint32_t)(*((c)++)));         \
+    (l) |= ((uint32_t)(*((c)++))) << 8L;  \
+    (l) |= ((uint32_t)(*((c)++))) << 16L; \
+    (l) |= ((uint32_t)(*((c)++))) << 24L; \
+  } while (0)
+
+#define c2ln(c, l1, l2, n)                     \
+  do {                                         \
+    (c) += (n);                                \
+    (l1) = (l2) = 0;                           \
+    switch (n) {                               \
+      case 8:                                  \
+        (l2) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 7:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 6:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 5:                                  \
+        (l2) |= ((uint32_t)(*(--(c))));        \
+        OPENSSL_FALLTHROUGH;                   \
+      case 4:                                  \
+        (l1) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 3:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 2:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 1:                                  \
+        (l1) |= ((uint32_t)(*(--(c))));        \
+    }                                          \
+  } while (0)
+
+#define l2c(l, c)                              \
+  do {                                         \
+    *((c)++) = (uint8_t)(((l)) & 0xff);        \
+    *((c)++) = (uint8_t)(((l) >> 8L) & 0xff);  \
+    *((c)++) = (uint8_t)(((l) >> 16L) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 24L) & 0xff); \
+  } while (0)
+
+#define l2cn(l1, l2, c, n)                          \
+  do {                                              \
+    (c) += (n);                                     \
+    switch (n) {                                    \
+      case 8:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 7:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 6:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                        \
+      case 5:                                       \
+        *(--(c)) = (uint8_t)(((l2)) & 0xff);        \
+        OPENSSL_FALLTHROUGH;                        \
+      case 4:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 3:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 2:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                        \
+      case 1:                                       \
+        *(--(c)) = (uint8_t)(((l1)) & 0xff);        \
+    }                                               \
+  } while (0)
+
+typedef struct rc2_key_st { uint16_t data[64]; } RC2_KEY;
+
+static void RC2_encrypt(uint32_t *d, RC2_KEY *key) {
+  int i, n;
+  uint16_t *p0, *p1;
+  uint16_t x0, x1, x2, x3, t;
+  uint32_t l;
+
+  l = d[0];
+  x0 = (uint16_t)l & 0xffff;
+  x1 = (uint16_t)(l >> 16L);
+  l = d[1];
+  x2 = (uint16_t)l & 0xffff;
+  x3 = (uint16_t)(l >> 16L);
+
+  n = 3;
+  i = 5;
+
+  p0 = p1 = &key->data[0];
+  for (;;) {
+    t = (x0 + (x1 & ~x3) + (x2 & x3) + *(p0++)) & 0xffff;
+    x0 = (t << 1) | (t >> 15);
+    t = (x1 + (x2 & ~x0) + (x3 & x0) + *(p0++)) & 0xffff;
+    x1 = (t << 2) | (t >> 14);
+    t = (x2 + (x3 & ~x1) + (x0 & x1) + *(p0++)) & 0xffff;
+    x2 = (t << 3) | (t >> 13);
+    t = (x3 + (x0 & ~x2) + (x1 & x2) + *(p0++)) & 0xffff;
+    x3 = (t << 5) | (t >> 11);
+
+    if (--i == 0) {
+      if (--n == 0) {
+        break;
+      }
+      i = (n == 2) ? 6 : 5;
+
+      x0 += p1[x3 & 0x3f];
+      x1 += p1[x0 & 0x3f];
+      x2 += p1[x1 & 0x3f];
+      x3 += p1[x2 & 0x3f];
+    }
+  }
+
+  d[0] = (uint32_t)(x0 & 0xffff) | ((uint32_t)(x1 & 0xffff) << 16L);
+  d[1] = (uint32_t)(x2 & 0xffff) | ((uint32_t)(x3 & 0xffff) << 16L);
+}
+
+static void RC2_decrypt(uint32_t *d, RC2_KEY *key) {
+  int i, n;
+  uint16_t *p0, *p1;
+  uint16_t x0, x1, x2, x3, t;
+  uint32_t l;
+
+  l = d[0];
+  x0 = (uint16_t)l & 0xffff;
+  x1 = (uint16_t)(l >> 16L);
+  l = d[1];
+  x2 = (uint16_t)l & 0xffff;
+  x3 = (uint16_t)(l >> 16L);
+
+  n = 3;
+  i = 5;
+
+  p0 = &key->data[63];
+  p1 = &key->data[0];
+  for (;;) {
+    t = ((x3 << 11) | (x3 >> 5)) & 0xffff;
+    x3 = (t - (x0 & ~x2) - (x1 & x2) - *(p0--)) & 0xffff;
+    t = ((x2 << 13) | (x2 >> 3)) & 0xffff;
+    x2 = (t - (x3 & ~x1) - (x0 & x1) - *(p0--)) & 0xffff;
+    t = ((x1 << 14) | (x1 >> 2)) & 0xffff;
+    x1 = (t - (x2 & ~x0) - (x3 & x0) - *(p0--)) & 0xffff;
+    t = ((x0 << 15) | (x0 >> 1)) & 0xffff;
+    x0 = (t - (x1 & ~x3) - (x2 & x3) - *(p0--)) & 0xffff;
+
+    if (--i == 0) {
+      if (--n == 0) {
+        break;
+      }
+      i = (n == 2) ? 6 : 5;
+
+      x3 = (x3 - p1[x2 & 0x3f]) & 0xffff;
+      x2 = (x2 - p1[x1 & 0x3f]) & 0xffff;
+      x1 = (x1 - p1[x0 & 0x3f]) & 0xffff;
+      x0 = (x0 - p1[x3 & 0x3f]) & 0xffff;
+    }
+  }
+
+  d[0] = (uint32_t)(x0 & 0xffff) | ((uint32_t)(x1 & 0xffff) << 16L);
+  d[1] = (uint32_t)(x2 & 0xffff) | ((uint32_t)(x3 & 0xffff) << 16L);
+}
+
+static void RC2_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                            RC2_KEY *ks, uint8_t *iv, int encrypt) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  long l = length;
+  uint32_t tin[2];
+
+  if (encrypt) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    iv -= 8;
+    for (l -= 8; l >= 0; l -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+      tin[0] = tin0;
+      tin[1] = tin1;
+      RC2_encrypt(tin, ks);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    if (l != -8) {
+      c2ln(in, tin0, tin1, l + 8);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+      tin[0] = tin0;
+      tin[1] = tin1;
+      RC2_encrypt(tin, ks);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    iv -= 8;
+    for (l -= 8; l >= 0; l -= 8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      RC2_decrypt(tin, ks);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    if (l != -8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      RC2_decrypt(tin, ks);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2cn(tout0, tout1, out, l + 8);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+  tin[0] = tin[1] = 0;
+}
+
+static const uint8_t key_table[256] = {
+    0xd9, 0x78, 0xf9, 0xc4, 0x19, 0xdd, 0xb5, 0xed, 0x28, 0xe9, 0xfd, 0x79,
+    0x4a, 0xa0, 0xd8, 0x9d, 0xc6, 0x7e, 0x37, 0x83, 0x2b, 0x76, 0x53, 0x8e,
+    0x62, 0x4c, 0x64, 0x88, 0x44, 0x8b, 0xfb, 0xa2, 0x17, 0x9a, 0x59, 0xf5,
+    0x87, 0xb3, 0x4f, 0x13, 0x61, 0x45, 0x6d, 0x8d, 0x09, 0x81, 0x7d, 0x32,
+    0xbd, 0x8f, 0x40, 0xeb, 0x86, 0xb7, 0x7b, 0x0b, 0xf0, 0x95, 0x21, 0x22,
+    0x5c, 0x6b, 0x4e, 0x82, 0x54, 0xd6, 0x65, 0x93, 0xce, 0x60, 0xb2, 0x1c,
+    0x73, 0x56, 0xc0, 0x14, 0xa7, 0x8c, 0xf1, 0xdc, 0x12, 0x75, 0xca, 0x1f,
+    0x3b, 0xbe, 0xe4, 0xd1, 0x42, 0x3d, 0xd4, 0x30, 0xa3, 0x3c, 0xb6, 0x26,
+    0x6f, 0xbf, 0x0e, 0xda, 0x46, 0x69, 0x07, 0x57, 0x27, 0xf2, 0x1d, 0x9b,
+    0xbc, 0x94, 0x43, 0x03, 0xf8, 0x11, 0xc7, 0xf6, 0x90, 0xef, 0x3e, 0xe7,
+    0x06, 0xc3, 0xd5, 0x2f, 0xc8, 0x66, 0x1e, 0xd7, 0x08, 0xe8, 0xea, 0xde,
+    0x80, 0x52, 0xee, 0xf7, 0x84, 0xaa, 0x72, 0xac, 0x35, 0x4d, 0x6a, 0x2a,
+    0x96, 0x1a, 0xd2, 0x71, 0x5a, 0x15, 0x49, 0x74, 0x4b, 0x9f, 0xd0, 0x5e,
+    0x04, 0x18, 0xa4, 0xec, 0xc2, 0xe0, 0x41, 0x6e, 0x0f, 0x51, 0xcb, 0xcc,
+    0x24, 0x91, 0xaf, 0x50, 0xa1, 0xf4, 0x70, 0x39, 0x99, 0x7c, 0x3a, 0x85,
+    0x23, 0xb8, 0xb4, 0x7a, 0xfc, 0x02, 0x36, 0x5b, 0x25, 0x55, 0x97, 0x31,
+    0x2d, 0x5d, 0xfa, 0x98, 0xe3, 0x8a, 0x92, 0xae, 0x05, 0xdf, 0x29, 0x10,
+    0x67, 0x6c, 0xba, 0xc9, 0xd3, 0x00, 0xe6, 0xcf, 0xe1, 0x9e, 0xa8, 0x2c,
+    0x63, 0x16, 0x01, 0x3f, 0x58, 0xe2, 0x89, 0xa9, 0x0d, 0x38, 0x34, 0x1b,
+    0xab, 0x33, 0xff, 0xb0, 0xbb, 0x48, 0x0c, 0x5f, 0xb9, 0xb1, 0xcd, 0x2e,
+    0xc5, 0xf3, 0xdb, 0x47, 0xe5, 0xa5, 0x9c, 0x77, 0x0a, 0xa6, 0x20, 0x68,
+    0xfe, 0x7f, 0xc1, 0xad,
+};
+
+static void RC2_set_key(RC2_KEY *key, int len, const uint8_t *data, int bits) {
+  int i, j;
+  uint8_t *k;
+  uint16_t *ki;
+  unsigned int c, d;
+
+  k = (uint8_t *)&key->data[0];
+  *k = 0;  // for if there is a zero length key
+
+  if (len > 128) {
+    len = 128;
+  }
+  if (bits <= 0) {
+    bits = 1024;
+  }
+  if (bits > 1024) {
+    bits = 1024;
+  }
+
+  for (i = 0; i < len; i++) {
+    k[i] = data[i];
+  }
+
+  // expand table
+  d = k[len - 1];
+  j = 0;
+  for (i = len; i < 128; i++, j++) {
+    d = key_table[(k[j] + d) & 0xff];
+    k[i] = d;
+  }
+
+  // hmm.... key reduction to 'bits' bits
+
+  j = (bits + 7) >> 3;
+  i = 128 - j;
+  c = (0xff >> (-bits & 0x07));
+
+  d = key_table[k[i] & c];
+  k[i] = d;
+  while (i--) {
+    d = key_table[k[i + j] ^ d];
+    k[i] = d;
+  }
+
+  // copy from bytes into uint16_t's
+  ki = &(key->data[63]);
+  for (i = 127; i >= 0; i -= 2) {
+    *(ki--) = ((k[i] << 8) | k[i - 1]) & 0xffff;
+  }
+}
+
+typedef struct {
+  int key_bits;  // effective key bits
+  RC2_KEY ks;    // key schedule
+} EVP_RC2_KEY;
+
+static int rc2_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  EVP_RC2_KEY *rc2_key = (EVP_RC2_KEY *)ctx->cipher_data;
+  RC2_set_key(&rc2_key->ks, EVP_CIPHER_CTX_key_length(ctx), key,
+              rc2_key->key_bits);
+  return 1;
+}
+
+static int rc2_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t inl) {
+  EVP_RC2_KEY *key = (EVP_RC2_KEY *)ctx->cipher_data;
+  static const size_t kChunkSize = 0x10000;
+
+  while (inl >= kChunkSize) {
+    RC2_cbc_encrypt(in, out, kChunkSize, &key->ks, ctx->iv, ctx->encrypt);
+    inl -= kChunkSize;
+    in += kChunkSize;
+    out += kChunkSize;
+  }
+  if (inl) {
+    RC2_cbc_encrypt(in, out, inl, &key->ks, ctx->iv, ctx->encrypt);
+  }
+  return 1;
+}
+
+static int rc2_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) {
+  EVP_RC2_KEY *key = (EVP_RC2_KEY *)ctx->cipher_data;
+
+  switch (type) {
+    case EVP_CTRL_INIT:
+      key->key_bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
+      return 1;
+    case EVP_CTRL_SET_RC2_KEY_BITS:
+      // Should be overridden by later call to |EVP_CTRL_INIT|, but
+      // people call it, so it may as well work.
+      key->key_bits = arg;
+      return 1;
+
+    default:
+      return -1;
+  }
+}
+
+static const EVP_CIPHER rc2_40_cbc = {
+    NID_rc2_40_cbc,
+    8 /* block size */,
+    5 /* 40 bit */,
+    8 /* iv len */,
+    sizeof(EVP_RC2_KEY),
+    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
+    NULL /* app_data */,
+    rc2_init_key,
+    rc2_cbc_cipher,
+    NULL,
+    rc2_ctrl,
+};
+
+const EVP_CIPHER *EVP_rc2_40_cbc(void) {
+  return &rc2_40_cbc;
+}
+
+static const EVP_CIPHER rc2_cbc = {
+    NID_rc2_cbc,
+    8 /* block size */,
+    16 /* 128 bit */,
+    8 /* iv len */,
+    sizeof(EVP_RC2_KEY),
+    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
+    NULL /* app_data */,
+    rc2_init_key,
+    rc2_cbc_cipher,
+    NULL,
+    rc2_ctrl,
+};
+
+const EVP_CIPHER *EVP_rc2_cbc(void) {
+  return &rc2_cbc;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c.grpc_back
new file mode 100644
index 0000000..221a9c9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc2.c.grpc_back	
@@ -0,0 +1,462 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+#include <openssl/nid.h>
+
+#include "../internal.h"
+
+
+#define c2l(c, l)                         \
+  do {                                    \
+    (l) = ((uint32_t)(*((c)++)));         \
+    (l) |= ((uint32_t)(*((c)++))) << 8L;  \
+    (l) |= ((uint32_t)(*((c)++))) << 16L; \
+    (l) |= ((uint32_t)(*((c)++))) << 24L; \
+  } while (0)
+
+#define c2ln(c, l1, l2, n)                     \
+  do {                                         \
+    (c) += (n);                                \
+    (l1) = (l2) = 0;                           \
+    switch (n) {                               \
+      case 8:                                  \
+        (l2) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 7:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 6:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 5:                                  \
+        (l2) |= ((uint32_t)(*(--(c))));        \
+        OPENSSL_FALLTHROUGH;                   \
+      case 4:                                  \
+        (l1) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 3:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 2:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 1:                                  \
+        (l1) |= ((uint32_t)(*(--(c))));        \
+    }                                          \
+  } while (0)
+
+#define l2c(l, c)                              \
+  do {                                         \
+    *((c)++) = (uint8_t)(((l)) & 0xff);        \
+    *((c)++) = (uint8_t)(((l) >> 8L) & 0xff);  \
+    *((c)++) = (uint8_t)(((l) >> 16L) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 24L) & 0xff); \
+  } while (0)
+
+#define l2cn(l1, l2, c, n)                          \
+  do {                                              \
+    (c) += (n);                                     \
+    switch (n) {                                    \
+      case 8:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 7:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 6:                                       \
+        *(--(c)) = (uint8_t)(((l2) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                        \
+      case 5:                                       \
+        *(--(c)) = (uint8_t)(((l2)) & 0xff);        \
+        OPENSSL_FALLTHROUGH;                        \
+      case 4:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 3:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                        \
+      case 2:                                       \
+        *(--(c)) = (uint8_t)(((l1) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                        \
+      case 1:                                       \
+        *(--(c)) = (uint8_t)(((l1)) & 0xff);        \
+    }                                               \
+  } while (0)
+
+typedef struct rc2_key_st { uint16_t data[64]; } RC2_KEY;
+
+static void RC2_encrypt(uint32_t *d, RC2_KEY *key) {
+  int i, n;
+  uint16_t *p0, *p1;
+  uint16_t x0, x1, x2, x3, t;
+  uint32_t l;
+
+  l = d[0];
+  x0 = (uint16_t)l & 0xffff;
+  x1 = (uint16_t)(l >> 16L);
+  l = d[1];
+  x2 = (uint16_t)l & 0xffff;
+  x3 = (uint16_t)(l >> 16L);
+
+  n = 3;
+  i = 5;
+
+  p0 = p1 = &key->data[0];
+  for (;;) {
+    t = (x0 + (x1 & ~x3) + (x2 & x3) + *(p0++)) & 0xffff;
+    x0 = (t << 1) | (t >> 15);
+    t = (x1 + (x2 & ~x0) + (x3 & x0) + *(p0++)) & 0xffff;
+    x1 = (t << 2) | (t >> 14);
+    t = (x2 + (x3 & ~x1) + (x0 & x1) + *(p0++)) & 0xffff;
+    x2 = (t << 3) | (t >> 13);
+    t = (x3 + (x0 & ~x2) + (x1 & x2) + *(p0++)) & 0xffff;
+    x3 = (t << 5) | (t >> 11);
+
+    if (--i == 0) {
+      if (--n == 0) {
+        break;
+      }
+      i = (n == 2) ? 6 : 5;
+
+      x0 += p1[x3 & 0x3f];
+      x1 += p1[x0 & 0x3f];
+      x2 += p1[x1 & 0x3f];
+      x3 += p1[x2 & 0x3f];
+    }
+  }
+
+  d[0] = (uint32_t)(x0 & 0xffff) | ((uint32_t)(x1 & 0xffff) << 16L);
+  d[1] = (uint32_t)(x2 & 0xffff) | ((uint32_t)(x3 & 0xffff) << 16L);
+}
+
+static void RC2_decrypt(uint32_t *d, RC2_KEY *key) {
+  int i, n;
+  uint16_t *p0, *p1;
+  uint16_t x0, x1, x2, x3, t;
+  uint32_t l;
+
+  l = d[0];
+  x0 = (uint16_t)l & 0xffff;
+  x1 = (uint16_t)(l >> 16L);
+  l = d[1];
+  x2 = (uint16_t)l & 0xffff;
+  x3 = (uint16_t)(l >> 16L);
+
+  n = 3;
+  i = 5;
+
+  p0 = &key->data[63];
+  p1 = &key->data[0];
+  for (;;) {
+    t = ((x3 << 11) | (x3 >> 5)) & 0xffff;
+    x3 = (t - (x0 & ~x2) - (x1 & x2) - *(p0--)) & 0xffff;
+    t = ((x2 << 13) | (x2 >> 3)) & 0xffff;
+    x2 = (t - (x3 & ~x1) - (x0 & x1) - *(p0--)) & 0xffff;
+    t = ((x1 << 14) | (x1 >> 2)) & 0xffff;
+    x1 = (t - (x2 & ~x0) - (x3 & x0) - *(p0--)) & 0xffff;
+    t = ((x0 << 15) | (x0 >> 1)) & 0xffff;
+    x0 = (t - (x1 & ~x3) - (x2 & x3) - *(p0--)) & 0xffff;
+
+    if (--i == 0) {
+      if (--n == 0) {
+        break;
+      }
+      i = (n == 2) ? 6 : 5;
+
+      x3 = (x3 - p1[x2 & 0x3f]) & 0xffff;
+      x2 = (x2 - p1[x1 & 0x3f]) & 0xffff;
+      x1 = (x1 - p1[x0 & 0x3f]) & 0xffff;
+      x0 = (x0 - p1[x3 & 0x3f]) & 0xffff;
+    }
+  }
+
+  d[0] = (uint32_t)(x0 & 0xffff) | ((uint32_t)(x1 & 0xffff) << 16L);
+  d[1] = (uint32_t)(x2 & 0xffff) | ((uint32_t)(x3 & 0xffff) << 16L);
+}
+
+static void RC2_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                            RC2_KEY *ks, uint8_t *iv, int encrypt) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  long l = length;
+  uint32_t tin[2];
+
+  if (encrypt) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    iv -= 8;
+    for (l -= 8; l >= 0; l -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+      tin[0] = tin0;
+      tin[1] = tin1;
+      RC2_encrypt(tin, ks);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    if (l != -8) {
+      c2ln(in, tin0, tin1, l + 8);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+      tin[0] = tin0;
+      tin[1] = tin1;
+      RC2_encrypt(tin, ks);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    iv -= 8;
+    for (l -= 8; l >= 0; l -= 8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      RC2_decrypt(tin, ks);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    if (l != -8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      RC2_decrypt(tin, ks);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2cn(tout0, tout1, out, l + 8);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+  tin[0] = tin[1] = 0;
+}
+
+static const uint8_t key_table[256] = {
+    0xd9, 0x78, 0xf9, 0xc4, 0x19, 0xdd, 0xb5, 0xed, 0x28, 0xe9, 0xfd, 0x79,
+    0x4a, 0xa0, 0xd8, 0x9d, 0xc6, 0x7e, 0x37, 0x83, 0x2b, 0x76, 0x53, 0x8e,
+    0x62, 0x4c, 0x64, 0x88, 0x44, 0x8b, 0xfb, 0xa2, 0x17, 0x9a, 0x59, 0xf5,
+    0x87, 0xb3, 0x4f, 0x13, 0x61, 0x45, 0x6d, 0x8d, 0x09, 0x81, 0x7d, 0x32,
+    0xbd, 0x8f, 0x40, 0xeb, 0x86, 0xb7, 0x7b, 0x0b, 0xf0, 0x95, 0x21, 0x22,
+    0x5c, 0x6b, 0x4e, 0x82, 0x54, 0xd6, 0x65, 0x93, 0xce, 0x60, 0xb2, 0x1c,
+    0x73, 0x56, 0xc0, 0x14, 0xa7, 0x8c, 0xf1, 0xdc, 0x12, 0x75, 0xca, 0x1f,
+    0x3b, 0xbe, 0xe4, 0xd1, 0x42, 0x3d, 0xd4, 0x30, 0xa3, 0x3c, 0xb6, 0x26,
+    0x6f, 0xbf, 0x0e, 0xda, 0x46, 0x69, 0x07, 0x57, 0x27, 0xf2, 0x1d, 0x9b,
+    0xbc, 0x94, 0x43, 0x03, 0xf8, 0x11, 0xc7, 0xf6, 0x90, 0xef, 0x3e, 0xe7,
+    0x06, 0xc3, 0xd5, 0x2f, 0xc8, 0x66, 0x1e, 0xd7, 0x08, 0xe8, 0xea, 0xde,
+    0x80, 0x52, 0xee, 0xf7, 0x84, 0xaa, 0x72, 0xac, 0x35, 0x4d, 0x6a, 0x2a,
+    0x96, 0x1a, 0xd2, 0x71, 0x5a, 0x15, 0x49, 0x74, 0x4b, 0x9f, 0xd0, 0x5e,
+    0x04, 0x18, 0xa4, 0xec, 0xc2, 0xe0, 0x41, 0x6e, 0x0f, 0x51, 0xcb, 0xcc,
+    0x24, 0x91, 0xaf, 0x50, 0xa1, 0xf4, 0x70, 0x39, 0x99, 0x7c, 0x3a, 0x85,
+    0x23, 0xb8, 0xb4, 0x7a, 0xfc, 0x02, 0x36, 0x5b, 0x25, 0x55, 0x97, 0x31,
+    0x2d, 0x5d, 0xfa, 0x98, 0xe3, 0x8a, 0x92, 0xae, 0x05, 0xdf, 0x29, 0x10,
+    0x67, 0x6c, 0xba, 0xc9, 0xd3, 0x00, 0xe6, 0xcf, 0xe1, 0x9e, 0xa8, 0x2c,
+    0x63, 0x16, 0x01, 0x3f, 0x58, 0xe2, 0x89, 0xa9, 0x0d, 0x38, 0x34, 0x1b,
+    0xab, 0x33, 0xff, 0xb0, 0xbb, 0x48, 0x0c, 0x5f, 0xb9, 0xb1, 0xcd, 0x2e,
+    0xc5, 0xf3, 0xdb, 0x47, 0xe5, 0xa5, 0x9c, 0x77, 0x0a, 0xa6, 0x20, 0x68,
+    0xfe, 0x7f, 0xc1, 0xad,
+};
+
+static void RC2_set_key(RC2_KEY *key, int len, const uint8_t *data, int bits) {
+  int i, j;
+  uint8_t *k;
+  uint16_t *ki;
+  unsigned int c, d;
+
+  k = (uint8_t *)&key->data[0];
+  *k = 0;  // for if there is a zero length key
+
+  if (len > 128) {
+    len = 128;
+  }
+  if (bits <= 0) {
+    bits = 1024;
+  }
+  if (bits > 1024) {
+    bits = 1024;
+  }
+
+  for (i = 0; i < len; i++) {
+    k[i] = data[i];
+  }
+
+  // expand table
+  d = k[len - 1];
+  j = 0;
+  for (i = len; i < 128; i++, j++) {
+    d = key_table[(k[j] + d) & 0xff];
+    k[i] = d;
+  }
+
+  // hmm.... key reduction to 'bits' bits
+
+  j = (bits + 7) >> 3;
+  i = 128 - j;
+  c = (0xff >> (-bits & 0x07));
+
+  d = key_table[k[i] & c];
+  k[i] = d;
+  while (i--) {
+    d = key_table[k[i + j] ^ d];
+    k[i] = d;
+  }
+
+  // copy from bytes into uint16_t's
+  ki = &(key->data[63]);
+  for (i = 127; i >= 0; i -= 2) {
+    *(ki--) = ((k[i] << 8) | k[i - 1]) & 0xffff;
+  }
+}
+
+typedef struct {
+  int key_bits;  // effective key bits
+  RC2_KEY ks;    // key schedule
+} EVP_RC2_KEY;
+
+static int rc2_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  EVP_RC2_KEY *rc2_key = (EVP_RC2_KEY *)ctx->cipher_data;
+  RC2_set_key(&rc2_key->ks, EVP_CIPHER_CTX_key_length(ctx), key,
+              rc2_key->key_bits);
+  return 1;
+}
+
+static int rc2_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t inl) {
+  EVP_RC2_KEY *key = (EVP_RC2_KEY *)ctx->cipher_data;
+  static const size_t kChunkSize = 0x10000;
+
+  while (inl >= kChunkSize) {
+    RC2_cbc_encrypt(in, out, kChunkSize, &key->ks, ctx->iv, ctx->encrypt);
+    inl -= kChunkSize;
+    in += kChunkSize;
+    out += kChunkSize;
+  }
+  if (inl) {
+    RC2_cbc_encrypt(in, out, inl, &key->ks, ctx->iv, ctx->encrypt);
+  }
+  return 1;
+}
+
+static int rc2_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) {
+  EVP_RC2_KEY *key = (EVP_RC2_KEY *)ctx->cipher_data;
+
+  switch (type) {
+    case EVP_CTRL_INIT:
+      key->key_bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
+      return 1;
+    case EVP_CTRL_SET_RC2_KEY_BITS:
+      // Should be overridden by later call to |EVP_CTRL_INIT|, but
+      // people call it, so it may as well work.
+      key->key_bits = arg;
+      return 1;
+
+    default:
+      return -1;
+  }
+}
+
+static const EVP_CIPHER rc2_40_cbc = {
+    NID_rc2_40_cbc,
+    8 /* block size */,
+    5 /* 40 bit */,
+    8 /* iv len */,
+    sizeof(EVP_RC2_KEY),
+    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
+    NULL /* app_data */,
+    rc2_init_key,
+    rc2_cbc_cipher,
+    NULL,
+    rc2_ctrl,
+};
+
+const EVP_CIPHER *EVP_rc2_40_cbc(void) {
+  return &rc2_40_cbc;
+}
+
+static const EVP_CIPHER rc2_cbc = {
+    NID_rc2_cbc,
+    8 /* block size */,
+    16 /* 128 bit */,
+    8 /* iv len */,
+    sizeof(EVP_RC2_KEY),
+    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
+    NULL /* app_data */,
+    rc2_init_key,
+    rc2_cbc_cipher,
+    NULL,
+    rc2_ctrl,
+};
+
+const EVP_CIPHER *EVP_rc2_cbc(void) {
+  return &rc2_cbc;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c
new file mode 100644
index 0000000..47af272
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c	
@@ -0,0 +1,87 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rc4.h>
+
+
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
+
+  RC4_set_key(rc4key, EVP_CIPHER_CTX_key_length(ctx), key);
+  return 1;
+}
+
+static int rc4_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                      size_t in_len) {
+  RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
+
+  RC4(rc4key, in_len, in, out);
+  return 1;
+}
+
+static const EVP_CIPHER rc4 = {
+    NID_rc4,             1 /* block_size */, 16 /* key_size */,
+    0 /* iv_len */,      sizeof(RC4_KEY),    EVP_CIPH_VARIABLE_LENGTH,
+    NULL /* app_data */, rc4_init_key,       rc4_cipher,
+    NULL /* cleanup */,  NULL /* ctrl */, };
+
+const EVP_CIPHER *EVP_rc4(void) { return &rc4; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c.grpc_back
new file mode 100644
index 0000000..e7c2cca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_rc4.c.grpc_back	
@@ -0,0 +1,87 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/cipher.h>
+#include <openssl/nid.h>
+#include <openssl/rc4.h>
+
+
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
+
+  RC4_set_key(rc4key, EVP_CIPHER_CTX_key_length(ctx), key);
+  return 1;
+}
+
+static int rc4_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                      size_t in_len) {
+  RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
+
+  RC4(rc4key, in_len, in, out);
+  return 1;
+}
+
+static const EVP_CIPHER rc4 = {
+    NID_rc4,             1 /* block_size */, 16 /* key_size */,
+    0 /* iv_len */,      sizeof(RC4_KEY),    EVP_CIPH_VARIABLE_LENGTH,
+    NULL /* app_data */, rc4_init_key,       rc4_cipher,
+    NULL /* cleanup */,  NULL /* ctrl */, };
+
+const EVP_CIPHER *EVP_rc4(void) { return &rc4; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c
new file mode 100644
index 0000000..2b5b82f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c	
@@ -0,0 +1,688 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/type_check.h>
+
+#include "../fipsmodule/cipher/internal.h"
+#include "../internal.h"
+#include "internal.h"
+
+
+typedef struct {
+  EVP_CIPHER_CTX cipher_ctx;
+  HMAC_CTX hmac_ctx;
+  // mac_key is the portion of the key used for the MAC. It is retained
+  // separately for the constant-time CBC code.
+  uint8_t mac_key[EVP_MAX_MD_SIZE];
+  uint8_t mac_key_len;
+  // implicit_iv is one iff this is a pre-TLS-1.1 CBC cipher without an explicit
+  // IV.
+  char implicit_iv;
+} AEAD_TLS_CTX;
+
+OPENSSL_STATIC_ASSERT(EVP_MAX_MD_SIZE < 256,
+                      "mac_key_len does not fit in uint8_t");
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(AEAD_TLS_CTX),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(AEAD_TLS_CTX),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static void aead_tls_cleanup(EVP_AEAD_CTX *ctx) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  EVP_CIPHER_CTX_cleanup(&tls_ctx->cipher_ctx);
+  HMAC_CTX_cleanup(&tls_ctx->hmac_ctx);
+}
+
+static int aead_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len,
+                         size_t tag_len, enum evp_aead_direction_t dir,
+                         const EVP_CIPHER *cipher, const EVP_MD *md,
+                         char implicit_iv) {
+  if (tag_len != EVP_AEAD_DEFAULT_TAG_LENGTH &&
+      tag_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_TAG_SIZE);
+    return 0;
+  }
+
+  if (key_len != EVP_AEAD_key_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;
+  }
+
+  size_t mac_key_len = EVP_MD_size(md);
+  size_t enc_key_len = EVP_CIPHER_key_length(cipher);
+  assert(mac_key_len + enc_key_len +
+         (implicit_iv ? EVP_CIPHER_iv_length(cipher) : 0) == key_len);
+
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  EVP_CIPHER_CTX_init(&tls_ctx->cipher_ctx);
+  HMAC_CTX_init(&tls_ctx->hmac_ctx);
+  assert(mac_key_len <= EVP_MAX_MD_SIZE);
+  OPENSSL_memcpy(tls_ctx->mac_key, key, mac_key_len);
+  tls_ctx->mac_key_len = (uint8_t)mac_key_len;
+  tls_ctx->implicit_iv = implicit_iv;
+
+  if (!EVP_CipherInit_ex(&tls_ctx->cipher_ctx, cipher, NULL, &key[mac_key_len],
+                         implicit_iv ? &key[mac_key_len + enc_key_len] : NULL,
+                         dir == evp_aead_seal) ||
+      !HMAC_Init_ex(&tls_ctx->hmac_ctx, key, mac_key_len, md, NULL)) {
+    aead_tls_cleanup(ctx);
+    return 0;
+  }
+  EVP_CIPHER_CTX_set_padding(&tls_ctx->cipher_ctx, 0);
+
+  return 1;
+}
+
+static size_t aead_tls_tag_len(const EVP_AEAD_CTX *ctx, const size_t in_len,
+                               const size_t extra_in_len) {
+  assert(extra_in_len == 0);
+  const AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  const size_t hmac_len = HMAC_size(&tls_ctx->hmac_ctx);
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) != EVP_CIPH_CBC_MODE) {
+    // The NULL cipher.
+    return hmac_len;
+  }
+
+  const size_t block_size = EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx);
+  // An overflow of |in_len + hmac_len| doesn't affect the result mod
+  // |block_size|, provided that |block_size| is a smaller power of two.
+  assert(block_size != 0 && (block_size & (block_size - 1)) == 0);
+  const size_t pad_len = block_size - (in_len + hmac_len) % block_size;
+  return hmac_len + pad_len;
+}
+
+static int aead_tls_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                 uint8_t *out_tag, size_t *out_tag_len,
+                                 const size_t max_out_tag_len,
+                                 const uint8_t *nonce, const size_t nonce_len,
+                                 const uint8_t *in, const size_t in_len,
+                                 const uint8_t *extra_in,
+                                 const size_t extra_in_len, const uint8_t *ad,
+                                 const size_t ad_len) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  if (!tls_ctx->cipher_ctx.encrypt) {
+    // Unlike a normal AEAD, a TLS AEAD may only be used in one direction.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  if (in_len > INT_MAX) {
+    // EVP_CIPHER takes int as input.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < aead_tls_tag_len(ctx, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (ad_len != 13 - 2 /* length bytes */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_AD_SIZE);
+    return 0;
+  }
+
+  // To allow for CBC mode which changes cipher length, |ad| doesn't include the
+  // length for legacy ciphers.
+  uint8_t ad_extra[2];
+  ad_extra[0] = (uint8_t)(in_len >> 8);
+  ad_extra[1] = (uint8_t)(in_len & 0xff);
+
+  // Compute the MAC. This must be first in case the operation is being done
+  // in-place.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  unsigned mac_len;
+  if (!HMAC_Init_ex(&tls_ctx->hmac_ctx, NULL, 0, NULL, NULL) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, ad, ad_len) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, ad_extra, sizeof(ad_extra)) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, in, in_len) ||
+      !HMAC_Final(&tls_ctx->hmac_ctx, mac, &mac_len)) {
+    return 0;
+  }
+
+  // Configure the explicit IV.
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      !tls_ctx->implicit_iv &&
+      !EVP_EncryptInit_ex(&tls_ctx->cipher_ctx, NULL, NULL, NULL, nonce)) {
+    return 0;
+  }
+
+  // Encrypt the input.
+  int len;
+  if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out, &len, in, (int)in_len)) {
+    return 0;
+  }
+
+  unsigned block_size = EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx);
+
+  // Feed the MAC into the cipher in two steps. First complete the final partial
+  // block from encrypting the input and split the result between |out| and
+  // |out_tag|. Then feed the rest.
+
+  const size_t early_mac_len = (block_size - (in_len % block_size)) % block_size;
+  if (early_mac_len != 0) {
+    assert(len + block_size - early_mac_len == in_len);
+    uint8_t buf[EVP_MAX_BLOCK_LENGTH];
+    int buf_len;
+    if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, buf, &buf_len, mac,
+                           (int)early_mac_len)) {
+      return 0;
+    }
+    assert(buf_len == (int)block_size);
+    OPENSSL_memcpy(out + len, buf, block_size - early_mac_len);
+    OPENSSL_memcpy(out_tag, buf + block_size - early_mac_len, early_mac_len);
+  }
+  size_t tag_len = early_mac_len;
+
+  if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out_tag + tag_len, &len,
+                         mac + tag_len, mac_len - tag_len)) {
+    return 0;
+  }
+  tag_len += len;
+
+  if (block_size > 1) {
+    assert(block_size <= 256);
+    assert(EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE);
+
+    // Compute padding and feed that into the cipher.
+    uint8_t padding[256];
+    unsigned padding_len = block_size - ((in_len + mac_len) % block_size);
+    OPENSSL_memset(padding, padding_len - 1, padding_len);
+    if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out_tag + tag_len, &len,
+                           padding, (int)padding_len)) {
+      return 0;
+    }
+    tag_len += len;
+  }
+
+  if (!EVP_EncryptFinal_ex(&tls_ctx->cipher_ctx, out_tag + tag_len, &len)) {
+    return 0;
+  }
+  assert(len == 0);  // Padding is explicit.
+  assert(tag_len == aead_tls_tag_len(ctx, in_len, extra_in_len));
+
+  *out_tag_len = tag_len;
+  return 1;
+}
+
+static int aead_tls_open(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                         size_t max_out_len, const uint8_t *nonce,
+                         size_t nonce_len, const uint8_t *in, size_t in_len,
+                         const uint8_t *ad, size_t ad_len) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  if (tls_ctx->cipher_ctx.encrypt) {
+    // Unlike a normal AEAD, a TLS AEAD may only be used in one direction.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  if (in_len < HMAC_size(&tls_ctx->hmac_ctx)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (max_out_len < in_len) {
+    // This requires that the caller provide space for the MAC, even though it
+    // will always be removed on return.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (ad_len != 13 - 2 /* length bytes */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_AD_SIZE);
+    return 0;
+  }
+
+  if (in_len > INT_MAX) {
+    // EVP_CIPHER takes int as input.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  // Configure the explicit IV.
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      !tls_ctx->implicit_iv &&
+      !EVP_DecryptInit_ex(&tls_ctx->cipher_ctx, NULL, NULL, NULL, nonce)) {
+    return 0;
+  }
+
+  // Decrypt to get the plaintext + MAC + padding.
+  size_t total = 0;
+  int len;
+  if (!EVP_DecryptUpdate(&tls_ctx->cipher_ctx, out, &len, in, (int)in_len)) {
+    return 0;
+  }
+  total += len;
+  if (!EVP_DecryptFinal_ex(&tls_ctx->cipher_ctx, out + total, &len)) {
+    return 0;
+  }
+  total += len;
+  assert(total == in_len);
+
+  CONSTTIME_SECRET(out, total);
+
+  // Remove CBC padding. Code from here on is timing-sensitive with respect to
+  // |padding_ok| and |data_plus_mac_len| for CBC ciphers.
+  size_t data_plus_mac_len;
+  crypto_word_t padding_ok;
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE) {
+    if (!EVP_tls_cbc_remove_padding(
+            &padding_ok, &data_plus_mac_len, out, total,
+            EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx),
+            HMAC_size(&tls_ctx->hmac_ctx))) {
+      // Publicly invalid. This can be rejected in non-constant time.
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+  } else {
+    padding_ok = CONSTTIME_TRUE_W;
+    data_plus_mac_len = total;
+    // |data_plus_mac_len| = |total| = |in_len| at this point. |in_len| has
+    // already been checked against the MAC size at the top of the function.
+    assert(data_plus_mac_len >= HMAC_size(&tls_ctx->hmac_ctx));
+  }
+  size_t data_len = data_plus_mac_len - HMAC_size(&tls_ctx->hmac_ctx);
+
+  // At this point, if the padding is valid, the first |data_plus_mac_len| bytes
+  // after |out| are the plaintext and MAC. Otherwise, |data_plus_mac_len| is
+  // still large enough to extract a MAC, but it will be irrelevant.
+
+  // To allow for CBC mode which changes cipher length, |ad| doesn't include the
+  // length for legacy ciphers.
+  uint8_t ad_fixed[13];
+  OPENSSL_memcpy(ad_fixed, ad, 11);
+  ad_fixed[11] = (uint8_t)(data_len >> 8);
+  ad_fixed[12] = (uint8_t)(data_len & 0xff);
+  ad_len += 2;
+
+  // Compute the MAC and extract the one in the record.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  size_t mac_len;
+  uint8_t record_mac_tmp[EVP_MAX_MD_SIZE];
+  uint8_t *record_mac;
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      EVP_tls_cbc_record_digest_supported(tls_ctx->hmac_ctx.md)) {
+    if (!EVP_tls_cbc_digest_record(tls_ctx->hmac_ctx.md, mac, &mac_len,
+                                   ad_fixed, out, data_plus_mac_len, total,
+                                   tls_ctx->mac_key, tls_ctx->mac_key_len)) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+    assert(mac_len == HMAC_size(&tls_ctx->hmac_ctx));
+
+    record_mac = record_mac_tmp;
+    EVP_tls_cbc_copy_mac(record_mac, mac_len, out, data_plus_mac_len, total);
+  } else {
+    // We should support the constant-time path for all CBC-mode ciphers
+    // implemented.
+    assert(EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) != EVP_CIPH_CBC_MODE);
+
+    unsigned mac_len_u;
+    if (!HMAC_Init_ex(&tls_ctx->hmac_ctx, NULL, 0, NULL, NULL) ||
+        !HMAC_Update(&tls_ctx->hmac_ctx, ad_fixed, ad_len) ||
+        !HMAC_Update(&tls_ctx->hmac_ctx, out, data_len) ||
+        !HMAC_Final(&tls_ctx->hmac_ctx, mac, &mac_len_u)) {
+      return 0;
+    }
+    mac_len = mac_len_u;
+
+    assert(mac_len == HMAC_size(&tls_ctx->hmac_ctx));
+    record_mac = &out[data_len];
+  }
+
+  // Perform the MAC check and the padding check in constant-time. It should be
+  // safe to simply perform the padding check first, but it would not be under a
+  // different choice of MAC location on padding failure. See
+  // EVP_tls_cbc_remove_padding.
+  crypto_word_t good =
+      constant_time_eq_int(CRYPTO_memcmp(record_mac, mac, mac_len), 0);
+  good &= padding_ok;
+  CONSTTIME_DECLASSIFY(&good, sizeof(good));
+  if (!good) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  CONSTTIME_DECLASSIFY(&data_len, sizeof(data_len));
+  CONSTTIME_DECLASSIFY(out, data_len);
+
+  // End of timing-sensitive code.
+
+  *out_len = data_len;
+  return 1;
+}
+
+static int aead_aes_128_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                          size_t key_len, size_t tag_len,
+                                          enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_aes_128_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_aes_128_cbc_sha256_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha256(), 0);
+}
+
+static int aead_aes_256_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                          size_t key_len, size_t tag_len,
+                                          enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_aes_256_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_aes_256_cbc_sha256_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha256(), 0);
+}
+
+static int aead_aes_256_cbc_sha384_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha384(), 0);
+}
+
+static int aead_des_ede3_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx,
+                                           const uint8_t *key, size_t key_len,
+                                           size_t tag_len,
+                                           enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_des_ede3_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_des_ede3_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_des_ede3_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_tls_get_iv(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                           size_t *out_iv_len) {
+  const AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  const size_t iv_len = EVP_CIPHER_CTX_iv_length(&tls_ctx->cipher_ctx);
+  if (iv_len <= 1) {
+    return 0;
+  }
+
+  *out_iv = tls_ctx->cipher_ctx.iv;
+  *out_iv_len = iv_len;
+  return 1;
+}
+
+static int aead_null_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t tag_len,
+                                   enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_enc_null(),
+                       EVP_sha1(), 1 /* implicit iv */);
+}
+
+static const EVP_AEAD aead_aes_128_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 16,  // key len (SHA1 + AES128)
+    16,                      // nonce len (IV)
+    16 + SHA_DIGEST_LENGTH,  // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_128_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 16 + 16,  // key len (SHA1 + AES128 + IV)
+    0,                            // nonce len
+    16 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,            // max tag length
+    0,                            // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_128_cbc_sha256_tls = {
+    SHA256_DIGEST_LENGTH + 16,  // key len (SHA256 + AES128)
+    16,                         // nonce len (IV)
+    16 + SHA256_DIGEST_LENGTH,  // overhead (padding + SHA256)
+    SHA256_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha256_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 32,  // key len (SHA1 + AES256)
+    16,                      // nonce len (IV)
+    16 + SHA_DIGEST_LENGTH,  // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 32 + 16,  // key len (SHA1 + AES256 + IV)
+    0,                            // nonce len
+    16 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,            // max tag length
+    0,                            // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha256_tls = {
+    SHA256_DIGEST_LENGTH + 32,  // key len (SHA256 + AES256)
+    16,                         // nonce len (IV)
+    16 + SHA256_DIGEST_LENGTH,  // overhead (padding + SHA256)
+    SHA256_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha256_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha384_tls = {
+    SHA384_DIGEST_LENGTH + 32,  // key len (SHA384 + AES256)
+    16,                         // nonce len (IV)
+    16 + SHA384_DIGEST_LENGTH,  // overhead (padding + SHA384)
+    SHA384_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha384_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_des_ede3_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 24,  // key len (SHA1 + 3DES)
+    8,                       // nonce len (IV)
+    8 + SHA_DIGEST_LENGTH,   // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_des_ede3_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_des_ede3_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 24 + 8,  // key len (SHA1 + 3DES + IV)
+    0,                           // nonce len
+    8 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,           // max tag length
+    0,                           // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_des_ede3_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_null_sha1_tls = {
+    SHA_DIGEST_LENGTH,  // key len
+    0,                  // nonce len
+    SHA_DIGEST_LENGTH,  // overhead (SHA1)
+    SHA_DIGEST_LENGTH,  // max tag length
+    0,                  // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_null_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls(void) {
+  return &aead_aes_128_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_aes_128_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha256_tls(void) {
+  return &aead_aes_128_cbc_sha256_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls(void) {
+  return &aead_aes_256_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_aes_256_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha256_tls(void) {
+  return &aead_aes_256_cbc_sha256_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha384_tls(void) {
+  return &aead_aes_256_cbc_sha384_tls;
+}
+
+const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls(void) {
+  return &aead_des_ede3_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_des_ede3_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_null_sha1_tls(void) { return &aead_null_sha1_tls; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c.grpc_back
new file mode 100644
index 0000000..c812b6b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/e_tls.c.grpc_back	
@@ -0,0 +1,688 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/aead.h>
+#include <openssl/cipher.h>
+#include <openssl/err.h>
+#include <openssl/hmac.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+#include <openssl/type_check.h>
+
+#include "../fipsmodule/cipher/internal.h"
+#include "../internal.h"
+#include "internal.h"
+
+
+typedef struct {
+  EVP_CIPHER_CTX cipher_ctx;
+  HMAC_CTX hmac_ctx;
+  // mac_key is the portion of the key used for the MAC. It is retained
+  // separately for the constant-time CBC code.
+  uint8_t mac_key[EVP_MAX_MD_SIZE];
+  uint8_t mac_key_len;
+  // implicit_iv is one iff this is a pre-TLS-1.1 CBC cipher without an explicit
+  // IV.
+  char implicit_iv;
+} AEAD_TLS_CTX;
+
+OPENSSL_STATIC_ASSERT(EVP_MAX_MD_SIZE < 256,
+                      "mac_key_len does not fit in uint8_t");
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(AEAD_TLS_CTX),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(AEAD_TLS_CTX),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static void aead_tls_cleanup(EVP_AEAD_CTX *ctx) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  EVP_CIPHER_CTX_cleanup(&tls_ctx->cipher_ctx);
+  HMAC_CTX_cleanup(&tls_ctx->hmac_ctx);
+}
+
+static int aead_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len,
+                         size_t tag_len, enum evp_aead_direction_t dir,
+                         const EVP_CIPHER *cipher, const EVP_MD *md,
+                         char implicit_iv) {
+  if (tag_len != EVP_AEAD_DEFAULT_TAG_LENGTH &&
+      tag_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_TAG_SIZE);
+    return 0;
+  }
+
+  if (key_len != EVP_AEAD_key_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;
+  }
+
+  size_t mac_key_len = EVP_MD_size(md);
+  size_t enc_key_len = EVP_CIPHER_key_length(cipher);
+  assert(mac_key_len + enc_key_len +
+         (implicit_iv ? EVP_CIPHER_iv_length(cipher) : 0) == key_len);
+
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  EVP_CIPHER_CTX_init(&tls_ctx->cipher_ctx);
+  HMAC_CTX_init(&tls_ctx->hmac_ctx);
+  assert(mac_key_len <= EVP_MAX_MD_SIZE);
+  OPENSSL_memcpy(tls_ctx->mac_key, key, mac_key_len);
+  tls_ctx->mac_key_len = (uint8_t)mac_key_len;
+  tls_ctx->implicit_iv = implicit_iv;
+
+  if (!EVP_CipherInit_ex(&tls_ctx->cipher_ctx, cipher, NULL, &key[mac_key_len],
+                         implicit_iv ? &key[mac_key_len + enc_key_len] : NULL,
+                         dir == evp_aead_seal) ||
+      !HMAC_Init_ex(&tls_ctx->hmac_ctx, key, mac_key_len, md, NULL)) {
+    aead_tls_cleanup(ctx);
+    return 0;
+  }
+  EVP_CIPHER_CTX_set_padding(&tls_ctx->cipher_ctx, 0);
+
+  return 1;
+}
+
+static size_t aead_tls_tag_len(const EVP_AEAD_CTX *ctx, const size_t in_len,
+                               const size_t extra_in_len) {
+  assert(extra_in_len == 0);
+  const AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  const size_t hmac_len = HMAC_size(&tls_ctx->hmac_ctx);
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) != EVP_CIPH_CBC_MODE) {
+    // The NULL cipher.
+    return hmac_len;
+  }
+
+  const size_t block_size = EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx);
+  // An overflow of |in_len + hmac_len| doesn't affect the result mod
+  // |block_size|, provided that |block_size| is a smaller power of two.
+  assert(block_size != 0 && (block_size & (block_size - 1)) == 0);
+  const size_t pad_len = block_size - (in_len + hmac_len) % block_size;
+  return hmac_len + pad_len;
+}
+
+static int aead_tls_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                 uint8_t *out_tag, size_t *out_tag_len,
+                                 const size_t max_out_tag_len,
+                                 const uint8_t *nonce, const size_t nonce_len,
+                                 const uint8_t *in, const size_t in_len,
+                                 const uint8_t *extra_in,
+                                 const size_t extra_in_len, const uint8_t *ad,
+                                 const size_t ad_len) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  if (!tls_ctx->cipher_ctx.encrypt) {
+    // Unlike a normal AEAD, a TLS AEAD may only be used in one direction.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  if (in_len > INT_MAX) {
+    // EVP_CIPHER takes int as input.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  if (max_out_tag_len < aead_tls_tag_len(ctx, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (ad_len != 13 - 2 /* length bytes */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_AD_SIZE);
+    return 0;
+  }
+
+  // To allow for CBC mode which changes cipher length, |ad| doesn't include the
+  // length for legacy ciphers.
+  uint8_t ad_extra[2];
+  ad_extra[0] = (uint8_t)(in_len >> 8);
+  ad_extra[1] = (uint8_t)(in_len & 0xff);
+
+  // Compute the MAC. This must be first in case the operation is being done
+  // in-place.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  unsigned mac_len;
+  if (!HMAC_Init_ex(&tls_ctx->hmac_ctx, NULL, 0, NULL, NULL) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, ad, ad_len) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, ad_extra, sizeof(ad_extra)) ||
+      !HMAC_Update(&tls_ctx->hmac_ctx, in, in_len) ||
+      !HMAC_Final(&tls_ctx->hmac_ctx, mac, &mac_len)) {
+    return 0;
+  }
+
+  // Configure the explicit IV.
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      !tls_ctx->implicit_iv &&
+      !EVP_EncryptInit_ex(&tls_ctx->cipher_ctx, NULL, NULL, NULL, nonce)) {
+    return 0;
+  }
+
+  // Encrypt the input.
+  int len;
+  if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out, &len, in, (int)in_len)) {
+    return 0;
+  }
+
+  unsigned block_size = EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx);
+
+  // Feed the MAC into the cipher in two steps. First complete the final partial
+  // block from encrypting the input and split the result between |out| and
+  // |out_tag|. Then feed the rest.
+
+  const size_t early_mac_len = (block_size - (in_len % block_size)) % block_size;
+  if (early_mac_len != 0) {
+    assert(len + block_size - early_mac_len == in_len);
+    uint8_t buf[EVP_MAX_BLOCK_LENGTH];
+    int buf_len;
+    if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, buf, &buf_len, mac,
+                           (int)early_mac_len)) {
+      return 0;
+    }
+    assert(buf_len == (int)block_size);
+    OPENSSL_memcpy(out + len, buf, block_size - early_mac_len);
+    OPENSSL_memcpy(out_tag, buf + block_size - early_mac_len, early_mac_len);
+  }
+  size_t tag_len = early_mac_len;
+
+  if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out_tag + tag_len, &len,
+                         mac + tag_len, mac_len - tag_len)) {
+    return 0;
+  }
+  tag_len += len;
+
+  if (block_size > 1) {
+    assert(block_size <= 256);
+    assert(EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE);
+
+    // Compute padding and feed that into the cipher.
+    uint8_t padding[256];
+    unsigned padding_len = block_size - ((in_len + mac_len) % block_size);
+    OPENSSL_memset(padding, padding_len - 1, padding_len);
+    if (!EVP_EncryptUpdate(&tls_ctx->cipher_ctx, out_tag + tag_len, &len,
+                           padding, (int)padding_len)) {
+      return 0;
+    }
+    tag_len += len;
+  }
+
+  if (!EVP_EncryptFinal_ex(&tls_ctx->cipher_ctx, out_tag + tag_len, &len)) {
+    return 0;
+  }
+  assert(len == 0);  // Padding is explicit.
+  assert(tag_len == aead_tls_tag_len(ctx, in_len, extra_in_len));
+
+  *out_tag_len = tag_len;
+  return 1;
+}
+
+static int aead_tls_open(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                         size_t max_out_len, const uint8_t *nonce,
+                         size_t nonce_len, const uint8_t *in, size_t in_len,
+                         const uint8_t *ad, size_t ad_len) {
+  AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+
+  if (tls_ctx->cipher_ctx.encrypt) {
+    // Unlike a normal AEAD, a TLS AEAD may only be used in one direction.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  if (in_len < HMAC_size(&tls_ctx->hmac_ctx)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  if (max_out_len < in_len) {
+    // This requires that the caller provide space for the MAC, even though it
+    // will always be removed on return.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (nonce_len != EVP_AEAD_nonce_length(ctx->aead)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (ad_len != 13 - 2 /* length bytes */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_AD_SIZE);
+    return 0;
+  }
+
+  if (in_len > INT_MAX) {
+    // EVP_CIPHER takes int as input.
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+
+  // Configure the explicit IV.
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      !tls_ctx->implicit_iv &&
+      !EVP_DecryptInit_ex(&tls_ctx->cipher_ctx, NULL, NULL, NULL, nonce)) {
+    return 0;
+  }
+
+  // Decrypt to get the plaintext + MAC + padding.
+  size_t total = 0;
+  int len;
+  if (!EVP_DecryptUpdate(&tls_ctx->cipher_ctx, out, &len, in, (int)in_len)) {
+    return 0;
+  }
+  total += len;
+  if (!EVP_DecryptFinal_ex(&tls_ctx->cipher_ctx, out + total, &len)) {
+    return 0;
+  }
+  total += len;
+  assert(total == in_len);
+
+  CONSTTIME_SECRET(out, total);
+
+  // Remove CBC padding. Code from here on is timing-sensitive with respect to
+  // |padding_ok| and |data_plus_mac_len| for CBC ciphers.
+  size_t data_plus_mac_len;
+  crypto_word_t padding_ok;
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE) {
+    if (!EVP_tls_cbc_remove_padding(
+            &padding_ok, &data_plus_mac_len, out, total,
+            EVP_CIPHER_CTX_block_size(&tls_ctx->cipher_ctx),
+            HMAC_size(&tls_ctx->hmac_ctx))) {
+      // Publicly invalid. This can be rejected in non-constant time.
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+  } else {
+    padding_ok = CONSTTIME_TRUE_W;
+    data_plus_mac_len = total;
+    // |data_plus_mac_len| = |total| = |in_len| at this point. |in_len| has
+    // already been checked against the MAC size at the top of the function.
+    assert(data_plus_mac_len >= HMAC_size(&tls_ctx->hmac_ctx));
+  }
+  size_t data_len = data_plus_mac_len - HMAC_size(&tls_ctx->hmac_ctx);
+
+  // At this point, if the padding is valid, the first |data_plus_mac_len| bytes
+  // after |out| are the plaintext and MAC. Otherwise, |data_plus_mac_len| is
+  // still large enough to extract a MAC, but it will be irrelevant.
+
+  // To allow for CBC mode which changes cipher length, |ad| doesn't include the
+  // length for legacy ciphers.
+  uint8_t ad_fixed[13];
+  OPENSSL_memcpy(ad_fixed, ad, 11);
+  ad_fixed[11] = (uint8_t)(data_len >> 8);
+  ad_fixed[12] = (uint8_t)(data_len & 0xff);
+  ad_len += 2;
+
+  // Compute the MAC and extract the one in the record.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  size_t mac_len;
+  uint8_t record_mac_tmp[EVP_MAX_MD_SIZE];
+  uint8_t *record_mac;
+  if (EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) == EVP_CIPH_CBC_MODE &&
+      EVP_tls_cbc_record_digest_supported(tls_ctx->hmac_ctx.md)) {
+    if (!EVP_tls_cbc_digest_record(tls_ctx->hmac_ctx.md, mac, &mac_len,
+                                   ad_fixed, out, data_plus_mac_len, total,
+                                   tls_ctx->mac_key, tls_ctx->mac_key_len)) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+    assert(mac_len == HMAC_size(&tls_ctx->hmac_ctx));
+
+    record_mac = record_mac_tmp;
+    EVP_tls_cbc_copy_mac(record_mac, mac_len, out, data_plus_mac_len, total);
+  } else {
+    // We should support the constant-time path for all CBC-mode ciphers
+    // implemented.
+    assert(EVP_CIPHER_CTX_mode(&tls_ctx->cipher_ctx) != EVP_CIPH_CBC_MODE);
+
+    unsigned mac_len_u;
+    if (!HMAC_Init_ex(&tls_ctx->hmac_ctx, NULL, 0, NULL, NULL) ||
+        !HMAC_Update(&tls_ctx->hmac_ctx, ad_fixed, ad_len) ||
+        !HMAC_Update(&tls_ctx->hmac_ctx, out, data_len) ||
+        !HMAC_Final(&tls_ctx->hmac_ctx, mac, &mac_len_u)) {
+      return 0;
+    }
+    mac_len = mac_len_u;
+
+    assert(mac_len == HMAC_size(&tls_ctx->hmac_ctx));
+    record_mac = &out[data_len];
+  }
+
+  // Perform the MAC check and the padding check in constant-time. It should be
+  // safe to simply perform the padding check first, but it would not be under a
+  // different choice of MAC location on padding failure. See
+  // EVP_tls_cbc_remove_padding.
+  crypto_word_t good =
+      constant_time_eq_int(CRYPTO_memcmp(record_mac, mac, mac_len), 0);
+  good &= padding_ok;
+  CONSTTIME_DECLASSIFY(&good, sizeof(good));
+  if (!good) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  CONSTTIME_DECLASSIFY(&data_len, sizeof(data_len));
+  CONSTTIME_DECLASSIFY(out, data_len);
+
+  // End of timing-sensitive code.
+
+  *out_len = data_len;
+  return 1;
+}
+
+static int aead_aes_128_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                          size_t key_len, size_t tag_len,
+                                          enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_aes_128_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_aes_128_cbc_sha256_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_128_cbc(),
+                       EVP_sha256(), 0);
+}
+
+static int aead_aes_256_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                          size_t key_len, size_t tag_len,
+                                          enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_aes_256_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_aes_256_cbc_sha256_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha256(), 0);
+}
+
+static int aead_aes_256_cbc_sha384_tls_init(EVP_AEAD_CTX *ctx,
+                                            const uint8_t *key, size_t key_len,
+                                            size_t tag_len,
+                                            enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_aes_256_cbc(),
+                       EVP_sha384(), 0);
+}
+
+static int aead_des_ede3_cbc_sha1_tls_init(EVP_AEAD_CTX *ctx,
+                                           const uint8_t *key, size_t key_len,
+                                           size_t tag_len,
+                                           enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_des_ede3_cbc(),
+                       EVP_sha1(), 0);
+}
+
+static int aead_des_ede3_cbc_sha1_tls_implicit_iv_init(
+    EVP_AEAD_CTX *ctx, const uint8_t *key, size_t key_len, size_t tag_len,
+    enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_des_ede3_cbc(),
+                       EVP_sha1(), 1);
+}
+
+static int aead_tls_get_iv(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                           size_t *out_iv_len) {
+  const AEAD_TLS_CTX *tls_ctx = (AEAD_TLS_CTX *)&ctx->state;
+  const size_t iv_len = EVP_CIPHER_CTX_iv_length(&tls_ctx->cipher_ctx);
+  if (iv_len <= 1) {
+    return 0;
+  }
+
+  *out_iv = tls_ctx->cipher_ctx.iv;
+  *out_iv_len = iv_len;
+  return 1;
+}
+
+static int aead_null_sha1_tls_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t tag_len,
+                                   enum evp_aead_direction_t dir) {
+  return aead_tls_init(ctx, key, key_len, tag_len, dir, EVP_enc_null(),
+                       EVP_sha1(), 1 /* implicit iv */);
+}
+
+static const EVP_AEAD aead_aes_128_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 16,  // key len (SHA1 + AES128)
+    16,                      // nonce len (IV)
+    16 + SHA_DIGEST_LENGTH,  // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_128_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 16 + 16,  // key len (SHA1 + AES128 + IV)
+    0,                            // nonce len
+    16 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,            // max tag length
+    0,                            // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_128_cbc_sha256_tls = {
+    SHA256_DIGEST_LENGTH + 16,  // key len (SHA256 + AES128)
+    16,                         // nonce len (IV)
+    16 + SHA256_DIGEST_LENGTH,  // overhead (padding + SHA256)
+    SHA256_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_128_cbc_sha256_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 32,  // key len (SHA1 + AES256)
+    16,                      // nonce len (IV)
+    16 + SHA_DIGEST_LENGTH,  // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 32 + 16,  // key len (SHA1 + AES256 + IV)
+    0,                            // nonce len
+    16 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,            // max tag length
+    0,                            // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha256_tls = {
+    SHA256_DIGEST_LENGTH + 32,  // key len (SHA256 + AES256)
+    16,                         // nonce len (IV)
+    16 + SHA256_DIGEST_LENGTH,  // overhead (padding + SHA256)
+    SHA256_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha256_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_aes_256_cbc_sha384_tls = {
+    SHA384_DIGEST_LENGTH + 32,  // key len (SHA384 + AES256)
+    16,                         // nonce len (IV)
+    16 + SHA384_DIGEST_LENGTH,  // overhead (padding + SHA384)
+    SHA384_DIGEST_LENGTH,       // max tag length
+    0,                          // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_aes_256_cbc_sha384_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_des_ede3_cbc_sha1_tls = {
+    SHA_DIGEST_LENGTH + 24,  // key len (SHA1 + 3DES)
+    8,                       // nonce len (IV)
+    8 + SHA_DIGEST_LENGTH,   // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,       // max tag length
+    0,                       // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_des_ede3_cbc_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_des_ede3_cbc_sha1_tls_implicit_iv = {
+    SHA_DIGEST_LENGTH + 24 + 8,  // key len (SHA1 + 3DES + IV)
+    0,                           // nonce len
+    8 + SHA_DIGEST_LENGTH,       // overhead (padding + SHA1)
+    SHA_DIGEST_LENGTH,           // max tag length
+    0,                           // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_des_ede3_cbc_sha1_tls_implicit_iv_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,             // open_gather
+    aead_tls_get_iv,  // get_iv
+    aead_tls_tag_len,
+};
+
+static const EVP_AEAD aead_null_sha1_tls = {
+    SHA_DIGEST_LENGTH,  // key len
+    0,                  // nonce len
+    SHA_DIGEST_LENGTH,  // overhead (SHA1)
+    SHA_DIGEST_LENGTH,  // max tag length
+    0,                  // seal_scatter_supports_extra_in
+
+    NULL,  // init
+    aead_null_sha1_tls_init,
+    aead_tls_cleanup,
+    aead_tls_open,
+    aead_tls_seal_scatter,
+    NULL,  // open_gather
+    NULL,  // get_iv
+    aead_tls_tag_len,
+};
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls(void) {
+  return &aead_aes_128_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_aes_128_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_aes_128_cbc_sha256_tls(void) {
+  return &aead_aes_128_cbc_sha256_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls(void) {
+  return &aead_aes_256_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_aes_256_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha256_tls(void) {
+  return &aead_aes_256_cbc_sha256_tls;
+}
+
+const EVP_AEAD *EVP_aead_aes_256_cbc_sha384_tls(void) {
+  return &aead_aes_256_cbc_sha384_tls;
+}
+
+const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls(void) {
+  return &aead_des_ede3_cbc_sha1_tls;
+}
+
+const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv(void) {
+  return &aead_des_ede3_cbc_sha1_tls_implicit_iv;
+}
+
+const EVP_AEAD *EVP_aead_null_sha1_tls(void) { return &aead_null_sha1_tls; }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h
new file mode 100644
index 0000000..9edbf9d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
+#define OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include "../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP_tls_cbc_get_padding determines the padding from the decrypted, TLS, CBC
+// record in |in|. This decrypted record should not include any "decrypted"
+// explicit IV. If the record is publicly invalid, it returns zero. Otherwise,
+// it returns one and sets |*out_padding_ok| to all ones (0xfff..f) if the
+// padding is valid and zero otherwise. It then sets |*out_len| to the length
+// with the padding removed or |in_len| if invalid.
+//
+// If the function returns one, it runs in time independent of the contents of
+// |in|. It is also guaranteed that |*out_len| >= |mac_size|, satisfying
+// |EVP_tls_cbc_copy_mac|'s precondition.
+int EVP_tls_cbc_remove_padding(crypto_word_t *out_padding_ok, size_t *out_len,
+                               const uint8_t *in, size_t in_len,
+                               size_t block_size, size_t mac_size);
+
+// EVP_tls_cbc_copy_mac copies |md_size| bytes from the end of the first
+// |in_len| bytes of |in| to |out| in constant time (independent of the concrete
+// value of |in_len|, which may vary within a 256-byte window). |in| must point
+// to a buffer of |orig_len| bytes.
+//
+// On entry:
+//   orig_len >= in_len >= md_size
+//   md_size <= EVP_MAX_MD_SIZE
+void EVP_tls_cbc_copy_mac(uint8_t *out, size_t md_size, const uint8_t *in,
+                          size_t in_len, size_t orig_len);
+
+// EVP_tls_cbc_record_digest_supported returns 1 iff |md| is a hash function
+// which EVP_tls_cbc_digest_record supports.
+int EVP_tls_cbc_record_digest_supported(const EVP_MD *md);
+
+// EVP_tls_cbc_digest_record computes the MAC of a decrypted, padded TLS
+// record.
+//
+//   md: the hash function used in the HMAC.
+//     EVP_tls_cbc_record_digest_supported must return true for this hash.
+//   md_out: the digest output. At most EVP_MAX_MD_SIZE bytes will be written.
+//   md_out_size: the number of output bytes is written here.
+//   header: the 13-byte, TLS record header.
+//   data: the record data itself
+//   data_plus_mac_size: the secret, reported length of the data and MAC
+//     once the padding has been removed.
+//   data_plus_mac_plus_padding_size: the public length of the whole
+//     record, including padding.
+//
+// On entry: by virtue of having been through one of the remove_padding
+// functions, above, we know that data_plus_mac_size is large enough to contain
+// a padding byte and MAC. (If the padding was invalid, it might contain the
+// padding too. )
+int EVP_tls_cbc_digest_record(const EVP_MD *md, uint8_t *md_out,
+                              size_t *md_out_size, const uint8_t header[13],
+                              const uint8_t *data, size_t data_plus_mac_size,
+                              size_t data_plus_mac_plus_padding_size,
+                              const uint8_t *mac_secret,
+                              unsigned mac_secret_length);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h.grpc_back
new file mode 100644
index 0000000..1d2c4e1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/internal.h.grpc_back	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
+#define OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include "../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP_tls_cbc_get_padding determines the padding from the decrypted, TLS, CBC
+// record in |in|. This decrypted record should not include any "decrypted"
+// explicit IV. If the record is publicly invalid, it returns zero. Otherwise,
+// it returns one and sets |*out_padding_ok| to all ones (0xfff..f) if the
+// padding is valid and zero otherwise. It then sets |*out_len| to the length
+// with the padding removed or |in_len| if invalid.
+//
+// If the function returns one, it runs in time independent of the contents of
+// |in|. It is also guaranteed that |*out_len| >= |mac_size|, satisfying
+// |EVP_tls_cbc_copy_mac|'s precondition.
+int EVP_tls_cbc_remove_padding(crypto_word_t *out_padding_ok, size_t *out_len,
+                               const uint8_t *in, size_t in_len,
+                               size_t block_size, size_t mac_size);
+
+// EVP_tls_cbc_copy_mac copies |md_size| bytes from the end of the first
+// |in_len| bytes of |in| to |out| in constant time (independent of the concrete
+// value of |in_len|, which may vary within a 256-byte window). |in| must point
+// to a buffer of |orig_len| bytes.
+//
+// On entry:
+//   orig_len >= in_len >= md_size
+//   md_size <= EVP_MAX_MD_SIZE
+void EVP_tls_cbc_copy_mac(uint8_t *out, size_t md_size, const uint8_t *in,
+                          size_t in_len, size_t orig_len);
+
+// EVP_tls_cbc_record_digest_supported returns 1 iff |md| is a hash function
+// which EVP_tls_cbc_digest_record supports.
+int EVP_tls_cbc_record_digest_supported(const EVP_MD *md);
+
+// EVP_tls_cbc_digest_record computes the MAC of a decrypted, padded TLS
+// record.
+//
+//   md: the hash function used in the HMAC.
+//     EVP_tls_cbc_record_digest_supported must return true for this hash.
+//   md_out: the digest output. At most EVP_MAX_MD_SIZE bytes will be written.
+//   md_out_size: the number of output bytes is written here.
+//   header: the 13-byte, TLS record header.
+//   data: the record data itself
+//   data_plus_mac_size: the secret, reported length of the data and MAC
+//     once the padding has been removed.
+//   data_plus_mac_plus_padding_size: the public length of the whole
+//     record, including padding.
+//
+// On entry: by virtue of having been through one of the remove_padding
+// functions, above, we know that data_plus_mac_size is large enough to contain
+// a padding byte and MAC. (If the padding was invalid, it might contain the
+// padding too. )
+int EVP_tls_cbc_digest_record(const EVP_MD *md, uint8_t *md_out,
+                              size_t *md_out_size, const uint8_t header[13],
+                              const uint8_t *data, size_t data_plus_mac_size,
+                              size_t data_plus_mac_plus_padding_size,
+                              const uint8_t *mac_secret,
+                              unsigned mac_secret_length);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CIPHER_EXTRA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c
new file mode 100644
index 0000000..a18f521
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c	
@@ -0,0 +1,491 @@
+/* ====================================================================
+ * Copyright (c) 2012 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/sha.h>
+
+#include "../internal.h"
+#include "internal.h"
+#include "../fipsmodule/cipher/internal.h"
+
+
+// MAX_HASH_BIT_COUNT_BYTES is the maximum number of bytes in the hash's length
+// field. (SHA-384/512 have 128-bit length.)
+#define MAX_HASH_BIT_COUNT_BYTES 16
+
+// MAX_HASH_BLOCK_SIZE is the maximum hash block size that we'll support.
+// Currently SHA-384/512 has a 128-byte block size and that's the largest
+// supported by TLS.)
+#define MAX_HASH_BLOCK_SIZE 128
+
+int EVP_tls_cbc_remove_padding(crypto_word_t *out_padding_ok, size_t *out_len,
+                               const uint8_t *in, size_t in_len,
+                               size_t block_size, size_t mac_size) {
+  const size_t overhead = 1 /* padding length byte */ + mac_size;
+
+  // These lengths are all public so we can test them in non-constant time.
+  if (overhead > in_len) {
+    return 0;
+  }
+
+  size_t padding_length = in[in_len - 1];
+
+  crypto_word_t good = constant_time_ge_w(in_len, overhead + padding_length);
+  // The padding consists of a length byte at the end of the record and
+  // then that many bytes of padding, all with the same value as the
+  // length byte. Thus, with the length byte included, there are i+1
+  // bytes of padding.
+  //
+  // We can't check just |padding_length+1| bytes because that leaks
+  // decrypted information. Therefore we always have to check the maximum
+  // amount of padding possible. (Again, the length of the record is
+  // public information so we can use it.)
+  size_t to_check = 256;  // maximum amount of padding, inc length byte.
+  if (to_check > in_len) {
+    to_check = in_len;
+  }
+
+  for (size_t i = 0; i < to_check; i++) {
+    uint8_t mask = constant_time_ge_8(padding_length, i);
+    uint8_t b = in[in_len - 1 - i];
+    // The final |padding_length+1| bytes should all have the value
+    // |padding_length|. Therefore the XOR should be zero.
+    good &= ~(mask & (padding_length ^ b));
+  }
+
+  // If any of the final |padding_length+1| bytes had the wrong value,
+  // one or more of the lower eight bits of |good| will be cleared.
+  good = constant_time_eq_w(0xff, good & 0xff);
+
+  // Always treat |padding_length| as zero on error. If, assuming block size of
+  // 16, a padding of [<15 arbitrary bytes> 15] treated |padding_length| as 16
+  // and returned -1, distinguishing good MAC and bad padding from bad MAC and
+  // bad padding would give POODLE's padding oracle.
+  padding_length = good & (padding_length + 1);
+  *out_len = in_len - padding_length;
+  *out_padding_ok = good;
+  return 1;
+}
+
+void EVP_tls_cbc_copy_mac(uint8_t *out, size_t md_size, const uint8_t *in,
+                          size_t in_len, size_t orig_len) {
+  uint8_t rotated_mac1[EVP_MAX_MD_SIZE], rotated_mac2[EVP_MAX_MD_SIZE];
+  uint8_t *rotated_mac = rotated_mac1;
+  uint8_t *rotated_mac_tmp = rotated_mac2;
+
+  // mac_end is the index of |in| just after the end of the MAC.
+  size_t mac_end = in_len;
+  size_t mac_start = mac_end - md_size;
+
+  assert(orig_len >= in_len);
+  assert(in_len >= md_size);
+  assert(md_size <= EVP_MAX_MD_SIZE);
+
+  // scan_start contains the number of bytes that we can ignore because
+  // the MAC's position can only vary by 255 bytes.
+  size_t scan_start = 0;
+  // This information is public so it's safe to branch based on it.
+  if (orig_len > md_size + 255 + 1) {
+    scan_start = orig_len - (md_size + 255 + 1);
+  }
+
+  size_t rotate_offset = 0;
+  uint8_t mac_started = 0;
+  OPENSSL_memset(rotated_mac, 0, md_size);
+  for (size_t i = scan_start, j = 0; i < orig_len; i++, j++) {
+    if (j >= md_size) {
+      j -= md_size;
+    }
+    crypto_word_t is_mac_start = constant_time_eq_w(i, mac_start);
+    mac_started |= is_mac_start;
+    uint8_t mac_ended = constant_time_ge_8(i, mac_end);
+    rotated_mac[j] |= in[i] & mac_started & ~mac_ended;
+    // Save the offset that |mac_start| is mapped to.
+    rotate_offset |= j & is_mac_start;
+  }
+
+  // Now rotate the MAC. We rotate in log(md_size) steps, one for each bit
+  // position.
+  for (size_t offset = 1; offset < md_size; offset <<= 1, rotate_offset >>= 1) {
+    // Rotate by |offset| iff the corresponding bit is set in
+    // |rotate_offset|, placing the result in |rotated_mac_tmp|.
+    const uint8_t skip_rotate = (rotate_offset & 1) - 1;
+    for (size_t i = 0, j = offset; i < md_size; i++, j++) {
+      if (j >= md_size) {
+        j -= md_size;
+      }
+      rotated_mac_tmp[i] =
+          constant_time_select_8(skip_rotate, rotated_mac[i], rotated_mac[j]);
+    }
+
+    // Swap pointers so |rotated_mac| contains the (possibly) rotated value.
+    // Note the number of iterations and thus the identity of these pointers is
+    // public information.
+    uint8_t *tmp = rotated_mac;
+    rotated_mac = rotated_mac_tmp;
+    rotated_mac_tmp = tmp;
+  }
+
+  OPENSSL_memcpy(out, rotated_mac, md_size);
+}
+
+// u32toBE serialises an unsigned, 32-bit number (n) as four bytes at (p) in
+// big-endian order. The value of p is advanced by four.
+#define u32toBE(n, p)                \
+  do {                               \
+    *((p)++) = (uint8_t)((n) >> 24); \
+    *((p)++) = (uint8_t)((n) >> 16); \
+    *((p)++) = (uint8_t)((n) >> 8);  \
+    *((p)++) = (uint8_t)((n));       \
+  } while (0)
+
+// u64toBE serialises an unsigned, 64-bit number (n) as eight bytes at (p) in
+// big-endian order. The value of p is advanced by eight.
+#define u64toBE(n, p)                \
+  do {                               \
+    *((p)++) = (uint8_t)((n) >> 56); \
+    *((p)++) = (uint8_t)((n) >> 48); \
+    *((p)++) = (uint8_t)((n) >> 40); \
+    *((p)++) = (uint8_t)((n) >> 32); \
+    *((p)++) = (uint8_t)((n) >> 24); \
+    *((p)++) = (uint8_t)((n) >> 16); \
+    *((p)++) = (uint8_t)((n) >> 8);  \
+    *((p)++) = (uint8_t)((n));       \
+  } while (0)
+
+typedef union {
+  SHA_CTX sha1;
+  SHA256_CTX sha256;
+  SHA512_CTX sha512;
+} HASH_CTX;
+
+static void tls1_sha1_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA1_Transform(&ctx->sha1, block);
+}
+
+static void tls1_sha256_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA256_Transform(&ctx->sha256, block);
+}
+
+static void tls1_sha512_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA512_Transform(&ctx->sha512, block);
+}
+
+// These functions serialize the state of a hash and thus perform the standard
+// "final" operation without adding the padding and length that such a function
+// typically does.
+static void tls1_sha1_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA_CTX *sha1 = &ctx->sha1;
+  u32toBE(sha1->h[0], md_out);
+  u32toBE(sha1->h[1], md_out);
+  u32toBE(sha1->h[2], md_out);
+  u32toBE(sha1->h[3], md_out);
+  u32toBE(sha1->h[4], md_out);
+}
+
+static void tls1_sha256_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA256_CTX *sha256 = &ctx->sha256;
+  for (unsigned i = 0; i < 8; i++) {
+    u32toBE(sha256->h[i], md_out);
+  }
+}
+
+static void tls1_sha512_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA512_CTX *sha512 = &ctx->sha512;
+  for (unsigned i = 0; i < 8; i++) {
+    u64toBE(sha512->h[i], md_out);
+  }
+}
+
+int EVP_tls_cbc_record_digest_supported(const EVP_MD *md) {
+  switch (EVP_MD_type(md)) {
+    case NID_sha1:
+    case NID_sha256:
+    case NID_sha384:
+      return 1;
+
+    default:
+      return 0;
+  }
+}
+
+int EVP_tls_cbc_digest_record(const EVP_MD *md, uint8_t *md_out,
+                              size_t *md_out_size, const uint8_t header[13],
+                              const uint8_t *data, size_t data_plus_mac_size,
+                              size_t data_plus_mac_plus_padding_size,
+                              const uint8_t *mac_secret,
+                              unsigned mac_secret_length) {
+  HASH_CTX md_state;
+  void (*md_final_raw)(HASH_CTX *ctx, uint8_t *md_out);
+  void (*md_transform)(HASH_CTX *ctx, const uint8_t *block);
+  unsigned md_size, md_block_size = 64, md_block_shift = 6;
+  // md_length_size is the number of bytes in the length field that terminates
+  // the hash.
+  unsigned md_length_size = 8;
+
+  // Bound the acceptable input so we can forget about many possible overflows
+  // later in this function. This is redundant with the record size limits in
+  // TLS.
+  if (data_plus_mac_plus_padding_size >= 1024 * 1024) {
+    assert(0);
+    return 0;
+  }
+
+  switch (EVP_MD_type(md)) {
+    case NID_sha1:
+      SHA1_Init(&md_state.sha1);
+      md_final_raw = tls1_sha1_final_raw;
+      md_transform = tls1_sha1_transform;
+      md_size = SHA_DIGEST_LENGTH;
+      break;
+
+    case NID_sha256:
+      SHA256_Init(&md_state.sha256);
+      md_final_raw = tls1_sha256_final_raw;
+      md_transform = tls1_sha256_transform;
+      md_size = SHA256_DIGEST_LENGTH;
+      break;
+
+    case NID_sha384:
+      SHA384_Init(&md_state.sha512);
+      md_final_raw = tls1_sha512_final_raw;
+      md_transform = tls1_sha512_transform;
+      md_size = SHA384_DIGEST_LENGTH;
+      md_block_size = 128;
+      md_block_shift = 7;
+      md_length_size = 16;
+      break;
+
+    default:
+      // EVP_tls_cbc_record_digest_supported should have been called first to
+      // check that the hash function is supported.
+      assert(0);
+      *md_out_size = 0;
+      return 0;
+  }
+
+  assert(md_length_size <= MAX_HASH_BIT_COUNT_BYTES);
+  assert(md_block_size <= MAX_HASH_BLOCK_SIZE);
+  assert(md_block_size == (1u << md_block_shift));
+  assert(md_size <= EVP_MAX_MD_SIZE);
+
+  static const size_t kHeaderLength = 13;
+
+  // kVarianceBlocks is the number of blocks of the hash that we have to
+  // calculate in constant time because they could be altered by the
+  // padding value.
+  //
+  // TLSv1 has MACs up to 48 bytes long (SHA-384) and the padding is not
+  // required to be minimal. Therefore we say that the final |kVarianceBlocks|
+  // blocks can vary based on the padding and on the hash used. This value
+  // must be derived from public information.
+  const size_t kVarianceBlocks =
+     ( 255 + 1 + // maximum padding bytes + padding length
+       md_size + // length of hash's output
+       md_block_size - 1 // ceiling
+     ) / md_block_size
+     + 1; // the 0x80 marker and the encoded message length could or not
+          // require an extra block; since the exact value depends on the
+          // message length; thus, one extra block is always added to run
+          // in constant time.
+
+  // From now on we're dealing with the MAC, which conceptually has 13
+  // bytes of `header' before the start of the data.
+  size_t len = data_plus_mac_plus_padding_size + kHeaderLength;
+  // max_mac_bytes contains the maximum bytes of bytes in the MAC, including
+  // |header|, assuming that there's no padding.
+  size_t max_mac_bytes = len - md_size - 1;
+  // num_blocks is the maximum number of hash blocks.
+  size_t num_blocks =
+      (max_mac_bytes + 1 + md_length_size + md_block_size - 1) / md_block_size;
+  // In order to calculate the MAC in constant time we have to handle
+  // the final blocks specially because the padding value could cause the
+  // end to appear somewhere in the final |kVarianceBlocks| blocks and we
+  // can't leak where. However, |num_starting_blocks| worth of data can
+  // be hashed right away because no padding value can affect whether
+  // they are plaintext.
+  size_t num_starting_blocks = 0;
+  // k is the starting byte offset into the conceptual header||data where
+  // we start processing.
+  size_t k = 0;
+  // mac_end_offset is the index just past the end of the data to be MACed.
+  size_t mac_end_offset = data_plus_mac_size + kHeaderLength - md_size;
+  // c is the index of the 0x80 byte in the final hash block that contains
+  // application data.
+  size_t c = mac_end_offset & (md_block_size - 1);
+  // index_a is the hash block number that contains the 0x80 terminating value.
+  size_t index_a = mac_end_offset >> md_block_shift;
+  // index_b is the hash block number that contains the 64-bit hash length, in
+  // bits.
+  size_t index_b = (mac_end_offset + md_length_size) >> md_block_shift;
+
+  if (num_blocks > kVarianceBlocks) {
+    num_starting_blocks = num_blocks - kVarianceBlocks;
+    k = md_block_size * num_starting_blocks;
+  }
+
+  // bits is the hash-length in bits. It includes the additional hash
+  // block for the masked HMAC key.
+  size_t bits = 8 * mac_end_offset;  // at most 18 bits to represent
+
+  // Compute the initial HMAC block.
+  bits += 8 * md_block_size;
+  // hmac_pad is the masked HMAC key.
+  uint8_t hmac_pad[MAX_HASH_BLOCK_SIZE];
+  OPENSSL_memset(hmac_pad, 0, md_block_size);
+  assert(mac_secret_length <= sizeof(hmac_pad));
+  OPENSSL_memcpy(hmac_pad, mac_secret, mac_secret_length);
+  for (size_t i = 0; i < md_block_size; i++) {
+    hmac_pad[i] ^= 0x36;
+  }
+
+  md_transform(&md_state, hmac_pad);
+
+  // The length check means |bits| fits in four bytes.
+  uint8_t length_bytes[MAX_HASH_BIT_COUNT_BYTES];
+  OPENSSL_memset(length_bytes, 0, md_length_size - 4);
+  length_bytes[md_length_size - 4] = (uint8_t)(bits >> 24);
+  length_bytes[md_length_size - 3] = (uint8_t)(bits >> 16);
+  length_bytes[md_length_size - 2] = (uint8_t)(bits >> 8);
+  length_bytes[md_length_size - 1] = (uint8_t)bits;
+
+  if (k > 0) {
+    // k is a multiple of md_block_size.
+    uint8_t first_block[MAX_HASH_BLOCK_SIZE];
+    OPENSSL_memcpy(first_block, header, 13);
+    OPENSSL_memcpy(first_block + 13, data, md_block_size - 13);
+    md_transform(&md_state, first_block);
+    for (size_t i = 1; i < k / md_block_size; i++) {
+      md_transform(&md_state, data + md_block_size * i - 13);
+    }
+  }
+
+  uint8_t mac_out[EVP_MAX_MD_SIZE];
+  OPENSSL_memset(mac_out, 0, sizeof(mac_out));
+
+  // We now process the final hash blocks. For each block, we construct
+  // it in constant time. If the |i==index_a| then we'll include the 0x80
+  // bytes and zero pad etc. For each block we selectively copy it, in
+  // constant time, to |mac_out|.
+  for (size_t i = num_starting_blocks;
+       i <= num_starting_blocks + kVarianceBlocks; i++) {
+    uint8_t block[MAX_HASH_BLOCK_SIZE];
+    uint8_t is_block_a = constant_time_eq_8(i, index_a);
+    uint8_t is_block_b = constant_time_eq_8(i, index_b);
+    for (size_t j = 0; j < md_block_size; j++) {
+      uint8_t b = 0;
+      if (k < kHeaderLength) {
+        b = header[k];
+      } else if (k < data_plus_mac_plus_padding_size + kHeaderLength) {
+        b = data[k - kHeaderLength];
+      }
+      k++;
+
+      uint8_t is_past_c = is_block_a & constant_time_ge_8(j, c);
+      uint8_t is_past_cp1 = is_block_a & constant_time_ge_8(j, c + 1);
+      // If this is the block containing the end of the
+      // application data, and we are at the offset for the
+      // 0x80 value, then overwrite b with 0x80.
+      b = constant_time_select_8(is_past_c, 0x80, b);
+      // If this the the block containing the end of the
+      // application data and we're past the 0x80 value then
+      // just write zero.
+      b = b & ~is_past_cp1;
+      // If this is index_b (the final block), but not
+      // index_a (the end of the data), then the 64-bit
+      // length didn't fit into index_a and we're having to
+      // add an extra block of zeros.
+      b &= ~is_block_b | is_block_a;
+
+      // The final bytes of one of the blocks contains the
+      // length.
+      if (j >= md_block_size - md_length_size) {
+        // If this is index_b, write a length byte.
+        b = constant_time_select_8(
+            is_block_b, length_bytes[j - (md_block_size - md_length_size)], b);
+      }
+      block[j] = b;
+    }
+
+    md_transform(&md_state, block);
+    md_final_raw(&md_state, block);
+    // If this is index_b, copy the hash value to |mac_out|.
+    for (size_t j = 0; j < md_size; j++) {
+      mac_out[j] |= block[j] & is_block_b;
+    }
+  }
+
+  EVP_MD_CTX md_ctx;
+  EVP_MD_CTX_init(&md_ctx);
+  if (!EVP_DigestInit_ex(&md_ctx, md, NULL /* engine */)) {
+    EVP_MD_CTX_cleanup(&md_ctx);
+    return 0;
+  }
+
+  // Complete the HMAC in the standard manner.
+  for (size_t i = 0; i < md_block_size; i++) {
+    hmac_pad[i] ^= 0x6a;
+  }
+
+  EVP_DigestUpdate(&md_ctx, hmac_pad, md_block_size);
+  EVP_DigestUpdate(&md_ctx, mac_out, md_size);
+  unsigned md_out_size_u;
+  EVP_DigestFinal(&md_ctx, md_out, &md_out_size_u);
+  *md_out_size = md_out_size_u;
+  EVP_MD_CTX_cleanup(&md_ctx);
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c.grpc_back
new file mode 100644
index 0000000..52353f2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cipher_extra/tls_cbc.c.grpc_back	
@@ -0,0 +1,491 @@
+/* ====================================================================
+ * Copyright (c) 2012 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/nid.h>
+#include <openssl/sha.h>
+
+#include "../internal.h"
+#include "internal.h"
+#include "../fipsmodule/cipher/internal.h"
+
+
+// MAX_HASH_BIT_COUNT_BYTES is the maximum number of bytes in the hash's length
+// field. (SHA-384/512 have 128-bit length.)
+#define MAX_HASH_BIT_COUNT_BYTES 16
+
+// MAX_HASH_BLOCK_SIZE is the maximum hash block size that we'll support.
+// Currently SHA-384/512 has a 128-byte block size and that's the largest
+// supported by TLS.)
+#define MAX_HASH_BLOCK_SIZE 128
+
+int EVP_tls_cbc_remove_padding(crypto_word_t *out_padding_ok, size_t *out_len,
+                               const uint8_t *in, size_t in_len,
+                               size_t block_size, size_t mac_size) {
+  const size_t overhead = 1 /* padding length byte */ + mac_size;
+
+  // These lengths are all public so we can test them in non-constant time.
+  if (overhead > in_len) {
+    return 0;
+  }
+
+  size_t padding_length = in[in_len - 1];
+
+  crypto_word_t good = constant_time_ge_w(in_len, overhead + padding_length);
+  // The padding consists of a length byte at the end of the record and
+  // then that many bytes of padding, all with the same value as the
+  // length byte. Thus, with the length byte included, there are i+1
+  // bytes of padding.
+  //
+  // We can't check just |padding_length+1| bytes because that leaks
+  // decrypted information. Therefore we always have to check the maximum
+  // amount of padding possible. (Again, the length of the record is
+  // public information so we can use it.)
+  size_t to_check = 256;  // maximum amount of padding, inc length byte.
+  if (to_check > in_len) {
+    to_check = in_len;
+  }
+
+  for (size_t i = 0; i < to_check; i++) {
+    uint8_t mask = constant_time_ge_8(padding_length, i);
+    uint8_t b = in[in_len - 1 - i];
+    // The final |padding_length+1| bytes should all have the value
+    // |padding_length|. Therefore the XOR should be zero.
+    good &= ~(mask & (padding_length ^ b));
+  }
+
+  // If any of the final |padding_length+1| bytes had the wrong value,
+  // one or more of the lower eight bits of |good| will be cleared.
+  good = constant_time_eq_w(0xff, good & 0xff);
+
+  // Always treat |padding_length| as zero on error. If, assuming block size of
+  // 16, a padding of [<15 arbitrary bytes> 15] treated |padding_length| as 16
+  // and returned -1, distinguishing good MAC and bad padding from bad MAC and
+  // bad padding would give POODLE's padding oracle.
+  padding_length = good & (padding_length + 1);
+  *out_len = in_len - padding_length;
+  *out_padding_ok = good;
+  return 1;
+}
+
+void EVP_tls_cbc_copy_mac(uint8_t *out, size_t md_size, const uint8_t *in,
+                          size_t in_len, size_t orig_len) {
+  uint8_t rotated_mac1[EVP_MAX_MD_SIZE], rotated_mac2[EVP_MAX_MD_SIZE];
+  uint8_t *rotated_mac = rotated_mac1;
+  uint8_t *rotated_mac_tmp = rotated_mac2;
+
+  // mac_end is the index of |in| just after the end of the MAC.
+  size_t mac_end = in_len;
+  size_t mac_start = mac_end - md_size;
+
+  assert(orig_len >= in_len);
+  assert(in_len >= md_size);
+  assert(md_size <= EVP_MAX_MD_SIZE);
+
+  // scan_start contains the number of bytes that we can ignore because
+  // the MAC's position can only vary by 255 bytes.
+  size_t scan_start = 0;
+  // This information is public so it's safe to branch based on it.
+  if (orig_len > md_size + 255 + 1) {
+    scan_start = orig_len - (md_size + 255 + 1);
+  }
+
+  size_t rotate_offset = 0;
+  uint8_t mac_started = 0;
+  OPENSSL_memset(rotated_mac, 0, md_size);
+  for (size_t i = scan_start, j = 0; i < orig_len; i++, j++) {
+    if (j >= md_size) {
+      j -= md_size;
+    }
+    crypto_word_t is_mac_start = constant_time_eq_w(i, mac_start);
+    mac_started |= is_mac_start;
+    uint8_t mac_ended = constant_time_ge_8(i, mac_end);
+    rotated_mac[j] |= in[i] & mac_started & ~mac_ended;
+    // Save the offset that |mac_start| is mapped to.
+    rotate_offset |= j & is_mac_start;
+  }
+
+  // Now rotate the MAC. We rotate in log(md_size) steps, one for each bit
+  // position.
+  for (size_t offset = 1; offset < md_size; offset <<= 1, rotate_offset >>= 1) {
+    // Rotate by |offset| iff the corresponding bit is set in
+    // |rotate_offset|, placing the result in |rotated_mac_tmp|.
+    const uint8_t skip_rotate = (rotate_offset & 1) - 1;
+    for (size_t i = 0, j = offset; i < md_size; i++, j++) {
+      if (j >= md_size) {
+        j -= md_size;
+      }
+      rotated_mac_tmp[i] =
+          constant_time_select_8(skip_rotate, rotated_mac[i], rotated_mac[j]);
+    }
+
+    // Swap pointers so |rotated_mac| contains the (possibly) rotated value.
+    // Note the number of iterations and thus the identity of these pointers is
+    // public information.
+    uint8_t *tmp = rotated_mac;
+    rotated_mac = rotated_mac_tmp;
+    rotated_mac_tmp = tmp;
+  }
+
+  OPENSSL_memcpy(out, rotated_mac, md_size);
+}
+
+// u32toBE serialises an unsigned, 32-bit number (n) as four bytes at (p) in
+// big-endian order. The value of p is advanced by four.
+#define u32toBE(n, p)                \
+  do {                               \
+    *((p)++) = (uint8_t)((n) >> 24); \
+    *((p)++) = (uint8_t)((n) >> 16); \
+    *((p)++) = (uint8_t)((n) >> 8);  \
+    *((p)++) = (uint8_t)((n));       \
+  } while (0)
+
+// u64toBE serialises an unsigned, 64-bit number (n) as eight bytes at (p) in
+// big-endian order. The value of p is advanced by eight.
+#define u64toBE(n, p)                \
+  do {                               \
+    *((p)++) = (uint8_t)((n) >> 56); \
+    *((p)++) = (uint8_t)((n) >> 48); \
+    *((p)++) = (uint8_t)((n) >> 40); \
+    *((p)++) = (uint8_t)((n) >> 32); \
+    *((p)++) = (uint8_t)((n) >> 24); \
+    *((p)++) = (uint8_t)((n) >> 16); \
+    *((p)++) = (uint8_t)((n) >> 8);  \
+    *((p)++) = (uint8_t)((n));       \
+  } while (0)
+
+typedef union {
+  SHA_CTX sha1;
+  SHA256_CTX sha256;
+  SHA512_CTX sha512;
+} HASH_CTX;
+
+static void tls1_sha1_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA1_Transform(&ctx->sha1, block);
+}
+
+static void tls1_sha256_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA256_Transform(&ctx->sha256, block);
+}
+
+static void tls1_sha512_transform(HASH_CTX *ctx, const uint8_t *block) {
+  SHA512_Transform(&ctx->sha512, block);
+}
+
+// These functions serialize the state of a hash and thus perform the standard
+// "final" operation without adding the padding and length that such a function
+// typically does.
+static void tls1_sha1_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA_CTX *sha1 = &ctx->sha1;
+  u32toBE(sha1->h[0], md_out);
+  u32toBE(sha1->h[1], md_out);
+  u32toBE(sha1->h[2], md_out);
+  u32toBE(sha1->h[3], md_out);
+  u32toBE(sha1->h[4], md_out);
+}
+
+static void tls1_sha256_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA256_CTX *sha256 = &ctx->sha256;
+  for (unsigned i = 0; i < 8; i++) {
+    u32toBE(sha256->h[i], md_out);
+  }
+}
+
+static void tls1_sha512_final_raw(HASH_CTX *ctx, uint8_t *md_out) {
+  SHA512_CTX *sha512 = &ctx->sha512;
+  for (unsigned i = 0; i < 8; i++) {
+    u64toBE(sha512->h[i], md_out);
+  }
+}
+
+int EVP_tls_cbc_record_digest_supported(const EVP_MD *md) {
+  switch (EVP_MD_type(md)) {
+    case NID_sha1:
+    case NID_sha256:
+    case NID_sha384:
+      return 1;
+
+    default:
+      return 0;
+  }
+}
+
+int EVP_tls_cbc_digest_record(const EVP_MD *md, uint8_t *md_out,
+                              size_t *md_out_size, const uint8_t header[13],
+                              const uint8_t *data, size_t data_plus_mac_size,
+                              size_t data_plus_mac_plus_padding_size,
+                              const uint8_t *mac_secret,
+                              unsigned mac_secret_length) {
+  HASH_CTX md_state;
+  void (*md_final_raw)(HASH_CTX *ctx, uint8_t *md_out);
+  void (*md_transform)(HASH_CTX *ctx, const uint8_t *block);
+  unsigned md_size, md_block_size = 64, md_block_shift = 6;
+  // md_length_size is the number of bytes in the length field that terminates
+  // the hash.
+  unsigned md_length_size = 8;
+
+  // Bound the acceptable input so we can forget about many possible overflows
+  // later in this function. This is redundant with the record size limits in
+  // TLS.
+  if (data_plus_mac_plus_padding_size >= 1024 * 1024) {
+    assert(0);
+    return 0;
+  }
+
+  switch (EVP_MD_type(md)) {
+    case NID_sha1:
+      SHA1_Init(&md_state.sha1);
+      md_final_raw = tls1_sha1_final_raw;
+      md_transform = tls1_sha1_transform;
+      md_size = SHA_DIGEST_LENGTH;
+      break;
+
+    case NID_sha256:
+      SHA256_Init(&md_state.sha256);
+      md_final_raw = tls1_sha256_final_raw;
+      md_transform = tls1_sha256_transform;
+      md_size = SHA256_DIGEST_LENGTH;
+      break;
+
+    case NID_sha384:
+      SHA384_Init(&md_state.sha512);
+      md_final_raw = tls1_sha512_final_raw;
+      md_transform = tls1_sha512_transform;
+      md_size = SHA384_DIGEST_LENGTH;
+      md_block_size = 128;
+      md_block_shift = 7;
+      md_length_size = 16;
+      break;
+
+    default:
+      // EVP_tls_cbc_record_digest_supported should have been called first to
+      // check that the hash function is supported.
+      assert(0);
+      *md_out_size = 0;
+      return 0;
+  }
+
+  assert(md_length_size <= MAX_HASH_BIT_COUNT_BYTES);
+  assert(md_block_size <= MAX_HASH_BLOCK_SIZE);
+  assert(md_block_size == (1u << md_block_shift));
+  assert(md_size <= EVP_MAX_MD_SIZE);
+
+  static const size_t kHeaderLength = 13;
+
+  // kVarianceBlocks is the number of blocks of the hash that we have to
+  // calculate in constant time because they could be altered by the
+  // padding value.
+  //
+  // TLSv1 has MACs up to 48 bytes long (SHA-384) and the padding is not
+  // required to be minimal. Therefore we say that the final |kVarianceBlocks|
+  // blocks can vary based on the padding and on the hash used. This value
+  // must be derived from public information.
+  const size_t kVarianceBlocks =
+     ( 255 + 1 + // maximum padding bytes + padding length
+       md_size + // length of hash's output
+       md_block_size - 1 // ceiling
+     ) / md_block_size
+     + 1; // the 0x80 marker and the encoded message length could or not
+          // require an extra block; since the exact value depends on the
+          // message length; thus, one extra block is always added to run
+          // in constant time.
+
+  // From now on we're dealing with the MAC, which conceptually has 13
+  // bytes of `header' before the start of the data.
+  size_t len = data_plus_mac_plus_padding_size + kHeaderLength;
+  // max_mac_bytes contains the maximum bytes of bytes in the MAC, including
+  // |header|, assuming that there's no padding.
+  size_t max_mac_bytes = len - md_size - 1;
+  // num_blocks is the maximum number of hash blocks.
+  size_t num_blocks =
+      (max_mac_bytes + 1 + md_length_size + md_block_size - 1) / md_block_size;
+  // In order to calculate the MAC in constant time we have to handle
+  // the final blocks specially because the padding value could cause the
+  // end to appear somewhere in the final |kVarianceBlocks| blocks and we
+  // can't leak where. However, |num_starting_blocks| worth of data can
+  // be hashed right away because no padding value can affect whether
+  // they are plaintext.
+  size_t num_starting_blocks = 0;
+  // k is the starting byte offset into the conceptual header||data where
+  // we start processing.
+  size_t k = 0;
+  // mac_end_offset is the index just past the end of the data to be MACed.
+  size_t mac_end_offset = data_plus_mac_size + kHeaderLength - md_size;
+  // c is the index of the 0x80 byte in the final hash block that contains
+  // application data.
+  size_t c = mac_end_offset & (md_block_size - 1);
+  // index_a is the hash block number that contains the 0x80 terminating value.
+  size_t index_a = mac_end_offset >> md_block_shift;
+  // index_b is the hash block number that contains the 64-bit hash length, in
+  // bits.
+  size_t index_b = (mac_end_offset + md_length_size) >> md_block_shift;
+
+  if (num_blocks > kVarianceBlocks) {
+    num_starting_blocks = num_blocks - kVarianceBlocks;
+    k = md_block_size * num_starting_blocks;
+  }
+
+  // bits is the hash-length in bits. It includes the additional hash
+  // block for the masked HMAC key.
+  size_t bits = 8 * mac_end_offset;  // at most 18 bits to represent
+
+  // Compute the initial HMAC block.
+  bits += 8 * md_block_size;
+  // hmac_pad is the masked HMAC key.
+  uint8_t hmac_pad[MAX_HASH_BLOCK_SIZE];
+  OPENSSL_memset(hmac_pad, 0, md_block_size);
+  assert(mac_secret_length <= sizeof(hmac_pad));
+  OPENSSL_memcpy(hmac_pad, mac_secret, mac_secret_length);
+  for (size_t i = 0; i < md_block_size; i++) {
+    hmac_pad[i] ^= 0x36;
+  }
+
+  md_transform(&md_state, hmac_pad);
+
+  // The length check means |bits| fits in four bytes.
+  uint8_t length_bytes[MAX_HASH_BIT_COUNT_BYTES];
+  OPENSSL_memset(length_bytes, 0, md_length_size - 4);
+  length_bytes[md_length_size - 4] = (uint8_t)(bits >> 24);
+  length_bytes[md_length_size - 3] = (uint8_t)(bits >> 16);
+  length_bytes[md_length_size - 2] = (uint8_t)(bits >> 8);
+  length_bytes[md_length_size - 1] = (uint8_t)bits;
+
+  if (k > 0) {
+    // k is a multiple of md_block_size.
+    uint8_t first_block[MAX_HASH_BLOCK_SIZE];
+    OPENSSL_memcpy(first_block, header, 13);
+    OPENSSL_memcpy(first_block + 13, data, md_block_size - 13);
+    md_transform(&md_state, first_block);
+    for (size_t i = 1; i < k / md_block_size; i++) {
+      md_transform(&md_state, data + md_block_size * i - 13);
+    }
+  }
+
+  uint8_t mac_out[EVP_MAX_MD_SIZE];
+  OPENSSL_memset(mac_out, 0, sizeof(mac_out));
+
+  // We now process the final hash blocks. For each block, we construct
+  // it in constant time. If the |i==index_a| then we'll include the 0x80
+  // bytes and zero pad etc. For each block we selectively copy it, in
+  // constant time, to |mac_out|.
+  for (size_t i = num_starting_blocks;
+       i <= num_starting_blocks + kVarianceBlocks; i++) {
+    uint8_t block[MAX_HASH_BLOCK_SIZE];
+    uint8_t is_block_a = constant_time_eq_8(i, index_a);
+    uint8_t is_block_b = constant_time_eq_8(i, index_b);
+    for (size_t j = 0; j < md_block_size; j++) {
+      uint8_t b = 0;
+      if (k < kHeaderLength) {
+        b = header[k];
+      } else if (k < data_plus_mac_plus_padding_size + kHeaderLength) {
+        b = data[k - kHeaderLength];
+      }
+      k++;
+
+      uint8_t is_past_c = is_block_a & constant_time_ge_8(j, c);
+      uint8_t is_past_cp1 = is_block_a & constant_time_ge_8(j, c + 1);
+      // If this is the block containing the end of the
+      // application data, and we are at the offset for the
+      // 0x80 value, then overwrite b with 0x80.
+      b = constant_time_select_8(is_past_c, 0x80, b);
+      // If this the the block containing the end of the
+      // application data and we're past the 0x80 value then
+      // just write zero.
+      b = b & ~is_past_cp1;
+      // If this is index_b (the final block), but not
+      // index_a (the end of the data), then the 64-bit
+      // length didn't fit into index_a and we're having to
+      // add an extra block of zeros.
+      b &= ~is_block_b | is_block_a;
+
+      // The final bytes of one of the blocks contains the
+      // length.
+      if (j >= md_block_size - md_length_size) {
+        // If this is index_b, write a length byte.
+        b = constant_time_select_8(
+            is_block_b, length_bytes[j - (md_block_size - md_length_size)], b);
+      }
+      block[j] = b;
+    }
+
+    md_transform(&md_state, block);
+    md_final_raw(&md_state, block);
+    // If this is index_b, copy the hash value to |mac_out|.
+    for (size_t j = 0; j < md_size; j++) {
+      mac_out[j] |= block[j] & is_block_b;
+    }
+  }
+
+  EVP_MD_CTX md_ctx;
+  EVP_MD_CTX_init(&md_ctx);
+  if (!EVP_DigestInit_ex(&md_ctx, md, NULL /* engine */)) {
+    EVP_MD_CTX_cleanup(&md_ctx);
+    return 0;
+  }
+
+  // Complete the HMAC in the standard manner.
+  for (size_t i = 0; i < md_block_size; i++) {
+    hmac_pad[i] ^= 0x6a;
+  }
+
+  EVP_DigestUpdate(&md_ctx, hmac_pad, md_block_size);
+  EVP_DigestUpdate(&md_ctx, mac_out, md_size);
+  unsigned md_out_size_u;
+  EVP_DigestFinal(&md_ctx, md_out, &md_out_size_u);
+  *md_out_size = md_out_size_u;
+  EVP_MD_CTX_cleanup(&md_ctx);
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c
new file mode 100644
index 0000000..b191312
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c	
@@ -0,0 +1,278 @@
+/* ====================================================================
+ * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/cmac.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/aes.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+struct cmac_ctx_st {
+  EVP_CIPHER_CTX cipher_ctx;
+  // k1 and k2 are the CMAC subkeys. See
+  // https://tools.ietf.org/html/rfc4493#section-2.3
+  uint8_t k1[AES_BLOCK_SIZE];
+  uint8_t k2[AES_BLOCK_SIZE];
+  // Last (possibly partial) scratch
+  uint8_t block[AES_BLOCK_SIZE];
+  // block_used contains the number of valid bytes in |block|.
+  unsigned block_used;
+};
+
+static void CMAC_CTX_init(CMAC_CTX *ctx) {
+  EVP_CIPHER_CTX_init(&ctx->cipher_ctx);
+}
+
+static void CMAC_CTX_cleanup(CMAC_CTX *ctx) {
+  EVP_CIPHER_CTX_cleanup(&ctx->cipher_ctx);
+  OPENSSL_cleanse(ctx->k1, sizeof(ctx->k1));
+  OPENSSL_cleanse(ctx->k2, sizeof(ctx->k2));
+  OPENSSL_cleanse(ctx->block, sizeof(ctx->block));
+}
+
+int AES_CMAC(uint8_t out[16], const uint8_t *key, size_t key_len,
+             const uint8_t *in, size_t in_len) {
+  const EVP_CIPHER *cipher;
+  switch (key_len) {
+    case 16:
+      cipher = EVP_aes_128_cbc();
+      break;
+    case 32:
+      cipher = EVP_aes_256_cbc();
+      break;
+    default:
+      return 0;
+  }
+
+  size_t scratch_out_len;
+  CMAC_CTX ctx;
+  CMAC_CTX_init(&ctx);
+
+  const int ok = CMAC_Init(&ctx, key, key_len, cipher, NULL /* engine */) &&
+                 CMAC_Update(&ctx, in, in_len) &&
+                 CMAC_Final(&ctx, out, &scratch_out_len);
+
+  CMAC_CTX_cleanup(&ctx);
+  return ok;
+}
+
+CMAC_CTX *CMAC_CTX_new(void) {
+  CMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
+  if (ctx != NULL) {
+    CMAC_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+void CMAC_CTX_free(CMAC_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  CMAC_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in) {
+  if (!EVP_CIPHER_CTX_copy(&out->cipher_ctx, &in->cipher_ctx)) {
+    return 0;
+  }
+  OPENSSL_memcpy(out->k1, in->k1, AES_BLOCK_SIZE);
+  OPENSSL_memcpy(out->k2, in->k2, AES_BLOCK_SIZE);
+  OPENSSL_memcpy(out->block, in->block, AES_BLOCK_SIZE);
+  out->block_used = in->block_used;
+  return 1;
+}
+
+// binary_field_mul_x_128 treats the 128 bits at |in| as an element of GF(2¹²⁸)
+// with a hard-coded reduction polynomial and sets |out| as x times the input.
+//
+// See https://tools.ietf.org/html/rfc4493#section-2.3
+static void binary_field_mul_x_128(uint8_t out[16], const uint8_t in[16]) {
+  unsigned i;
+
+  // Shift |in| to left, including carry.
+  for (i = 0; i < 15; i++) {
+    out[i] = (in[i] << 1) | (in[i+1] >> 7);
+  }
+
+  // If MSB set fixup with R.
+  const uint8_t carry = in[0] >> 7;
+  out[i] = (in[i] << 1) ^ ((0 - carry) & 0x87);
+}
+
+// binary_field_mul_x_64 behaves like |binary_field_mul_x_128| but acts on an
+// element of GF(2⁶⁴).
+//
+// See https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-38b.pdf
+static void binary_field_mul_x_64(uint8_t out[8], const uint8_t in[8]) {
+  unsigned i;
+
+  // Shift |in| to left, including carry.
+  for (i = 0; i < 7; i++) {
+    out[i] = (in[i] << 1) | (in[i+1] >> 7);
+  }
+
+  // If MSB set fixup with R.
+  const uint8_t carry = in[0] >> 7;
+  out[i] = (in[i] << 1) ^ ((0 - carry) & 0x1b);
+}
+
+static const uint8_t kZeroIV[AES_BLOCK_SIZE] = {0};
+
+int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t key_len,
+              const EVP_CIPHER *cipher, ENGINE *engine) {
+  uint8_t scratch[AES_BLOCK_SIZE];
+
+  size_t block_size = EVP_CIPHER_block_size(cipher);
+  if ((block_size != AES_BLOCK_SIZE && block_size != 8 /* 3-DES */) ||
+      EVP_CIPHER_key_length(cipher) != key_len ||
+      !EVP_EncryptInit_ex(&ctx->cipher_ctx, cipher, NULL, key, kZeroIV) ||
+      !EVP_Cipher(&ctx->cipher_ctx, scratch, kZeroIV, block_size) ||
+      // Reset context again ready for first data.
+      !EVP_EncryptInit_ex(&ctx->cipher_ctx, NULL, NULL, NULL, kZeroIV)) {
+    return 0;
+  }
+
+  if (block_size == AES_BLOCK_SIZE) {
+    binary_field_mul_x_128(ctx->k1, scratch);
+    binary_field_mul_x_128(ctx->k2, ctx->k1);
+  } else {
+    binary_field_mul_x_64(ctx->k1, scratch);
+    binary_field_mul_x_64(ctx->k2, ctx->k1);
+  }
+  ctx->block_used = 0;
+
+  return 1;
+}
+
+int CMAC_Reset(CMAC_CTX *ctx) {
+  ctx->block_used = 0;
+  return EVP_EncryptInit_ex(&ctx->cipher_ctx, NULL, NULL, NULL, kZeroIV);
+}
+
+int CMAC_Update(CMAC_CTX *ctx, const uint8_t *in, size_t in_len) {
+  size_t block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
+  assert(block_size <= AES_BLOCK_SIZE);
+  uint8_t scratch[AES_BLOCK_SIZE];
+
+  if (ctx->block_used > 0) {
+    size_t todo = block_size - ctx->block_used;
+    if (in_len < todo) {
+      todo = in_len;
+    }
+
+    OPENSSL_memcpy(ctx->block + ctx->block_used, in, todo);
+    in += todo;
+    in_len -= todo;
+    ctx->block_used += todo;
+
+    // If |in_len| is zero then either |ctx->block_used| is less than
+    // |block_size|, in which case we can stop here, or |ctx->block_used| is
+    // exactly |block_size| but there's no more data to process. In the latter
+    // case we don't want to process this block now because it might be the last
+    // block and that block is treated specially.
+    if (in_len == 0) {
+      return 1;
+    }
+
+    assert(ctx->block_used == block_size);
+
+    if (!EVP_Cipher(&ctx->cipher_ctx, scratch, ctx->block, block_size)) {
+      return 0;
+    }
+  }
+
+  // Encrypt all but one of the remaining blocks.
+  while (in_len > block_size) {
+    if (!EVP_Cipher(&ctx->cipher_ctx, scratch, in, block_size)) {
+      return 0;
+    }
+    in += block_size;
+    in_len -= block_size;
+  }
+
+  OPENSSL_memcpy(ctx->block, in, in_len);
+  ctx->block_used = in_len;
+
+  return 1;
+}
+
+int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len) {
+  size_t block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
+  assert(block_size <= AES_BLOCK_SIZE);
+
+  *out_len = block_size;
+  if (out == NULL) {
+    return 1;
+  }
+
+  const uint8_t *mask = ctx->k1;
+
+  if (ctx->block_used != block_size) {
+    // If the last block is incomplete, terminate it with a single 'one' bit
+    // followed by zeros.
+    ctx->block[ctx->block_used] = 0x80;
+    OPENSSL_memset(ctx->block + ctx->block_used + 1, 0,
+                   block_size - (ctx->block_used + 1));
+
+    mask = ctx->k2;
+  }
+
+  for (unsigned i = 0; i < block_size; i++) {
+    out[i] = ctx->block[i] ^ mask[i];
+  }
+
+  return EVP_Cipher(&ctx->cipher_ctx, out, out, block_size);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c.grpc_back
new file mode 100644
index 0000000..b6a10f7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cmac/cmac.c.grpc_back	
@@ -0,0 +1,278 @@
+/* ====================================================================
+ * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/cmac.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/aes.h>
+#include <openssl/cipher.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+struct cmac_ctx_st {
+  EVP_CIPHER_CTX cipher_ctx;
+  // k1 and k2 are the CMAC subkeys. See
+  // https://tools.ietf.org/html/rfc4493#section-2.3
+  uint8_t k1[AES_BLOCK_SIZE];
+  uint8_t k2[AES_BLOCK_SIZE];
+  // Last (possibly partial) scratch
+  uint8_t block[AES_BLOCK_SIZE];
+  // block_used contains the number of valid bytes in |block|.
+  unsigned block_used;
+};
+
+static void CMAC_CTX_init(CMAC_CTX *ctx) {
+  EVP_CIPHER_CTX_init(&ctx->cipher_ctx);
+}
+
+static void CMAC_CTX_cleanup(CMAC_CTX *ctx) {
+  EVP_CIPHER_CTX_cleanup(&ctx->cipher_ctx);
+  OPENSSL_cleanse(ctx->k1, sizeof(ctx->k1));
+  OPENSSL_cleanse(ctx->k2, sizeof(ctx->k2));
+  OPENSSL_cleanse(ctx->block, sizeof(ctx->block));
+}
+
+int AES_CMAC(uint8_t out[16], const uint8_t *key, size_t key_len,
+             const uint8_t *in, size_t in_len) {
+  const EVP_CIPHER *cipher;
+  switch (key_len) {
+    case 16:
+      cipher = EVP_aes_128_cbc();
+      break;
+    case 32:
+      cipher = EVP_aes_256_cbc();
+      break;
+    default:
+      return 0;
+  }
+
+  size_t scratch_out_len;
+  CMAC_CTX ctx;
+  CMAC_CTX_init(&ctx);
+
+  const int ok = CMAC_Init(&ctx, key, key_len, cipher, NULL /* engine */) &&
+                 CMAC_Update(&ctx, in, in_len) &&
+                 CMAC_Final(&ctx, out, &scratch_out_len);
+
+  CMAC_CTX_cleanup(&ctx);
+  return ok;
+}
+
+CMAC_CTX *CMAC_CTX_new(void) {
+  CMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
+  if (ctx != NULL) {
+    CMAC_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+void CMAC_CTX_free(CMAC_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  CMAC_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in) {
+  if (!EVP_CIPHER_CTX_copy(&out->cipher_ctx, &in->cipher_ctx)) {
+    return 0;
+  }
+  OPENSSL_memcpy(out->k1, in->k1, AES_BLOCK_SIZE);
+  OPENSSL_memcpy(out->k2, in->k2, AES_BLOCK_SIZE);
+  OPENSSL_memcpy(out->block, in->block, AES_BLOCK_SIZE);
+  out->block_used = in->block_used;
+  return 1;
+}
+
+// binary_field_mul_x_128 treats the 128 bits at |in| as an element of GF(2¹²⁸)
+// with a hard-coded reduction polynomial and sets |out| as x times the input.
+//
+// See https://tools.ietf.org/html/rfc4493#section-2.3
+static void binary_field_mul_x_128(uint8_t out[16], const uint8_t in[16]) {
+  unsigned i;
+
+  // Shift |in| to left, including carry.
+  for (i = 0; i < 15; i++) {
+    out[i] = (in[i] << 1) | (in[i+1] >> 7);
+  }
+
+  // If MSB set fixup with R.
+  const uint8_t carry = in[0] >> 7;
+  out[i] = (in[i] << 1) ^ ((0 - carry) & 0x87);
+}
+
+// binary_field_mul_x_64 behaves like |binary_field_mul_x_128| but acts on an
+// element of GF(2⁶⁴).
+//
+// See https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-38b.pdf
+static void binary_field_mul_x_64(uint8_t out[8], const uint8_t in[8]) {
+  unsigned i;
+
+  // Shift |in| to left, including carry.
+  for (i = 0; i < 7; i++) {
+    out[i] = (in[i] << 1) | (in[i+1] >> 7);
+  }
+
+  // If MSB set fixup with R.
+  const uint8_t carry = in[0] >> 7;
+  out[i] = (in[i] << 1) ^ ((0 - carry) & 0x1b);
+}
+
+static const uint8_t kZeroIV[AES_BLOCK_SIZE] = {0};
+
+int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t key_len,
+              const EVP_CIPHER *cipher, ENGINE *engine) {
+  uint8_t scratch[AES_BLOCK_SIZE];
+
+  size_t block_size = EVP_CIPHER_block_size(cipher);
+  if ((block_size != AES_BLOCK_SIZE && block_size != 8 /* 3-DES */) ||
+      EVP_CIPHER_key_length(cipher) != key_len ||
+      !EVP_EncryptInit_ex(&ctx->cipher_ctx, cipher, NULL, key, kZeroIV) ||
+      !EVP_Cipher(&ctx->cipher_ctx, scratch, kZeroIV, block_size) ||
+      // Reset context again ready for first data.
+      !EVP_EncryptInit_ex(&ctx->cipher_ctx, NULL, NULL, NULL, kZeroIV)) {
+    return 0;
+  }
+
+  if (block_size == AES_BLOCK_SIZE) {
+    binary_field_mul_x_128(ctx->k1, scratch);
+    binary_field_mul_x_128(ctx->k2, ctx->k1);
+  } else {
+    binary_field_mul_x_64(ctx->k1, scratch);
+    binary_field_mul_x_64(ctx->k2, ctx->k1);
+  }
+  ctx->block_used = 0;
+
+  return 1;
+}
+
+int CMAC_Reset(CMAC_CTX *ctx) {
+  ctx->block_used = 0;
+  return EVP_EncryptInit_ex(&ctx->cipher_ctx, NULL, NULL, NULL, kZeroIV);
+}
+
+int CMAC_Update(CMAC_CTX *ctx, const uint8_t *in, size_t in_len) {
+  size_t block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
+  assert(block_size <= AES_BLOCK_SIZE);
+  uint8_t scratch[AES_BLOCK_SIZE];
+
+  if (ctx->block_used > 0) {
+    size_t todo = block_size - ctx->block_used;
+    if (in_len < todo) {
+      todo = in_len;
+    }
+
+    OPENSSL_memcpy(ctx->block + ctx->block_used, in, todo);
+    in += todo;
+    in_len -= todo;
+    ctx->block_used += todo;
+
+    // If |in_len| is zero then either |ctx->block_used| is less than
+    // |block_size|, in which case we can stop here, or |ctx->block_used| is
+    // exactly |block_size| but there's no more data to process. In the latter
+    // case we don't want to process this block now because it might be the last
+    // block and that block is treated specially.
+    if (in_len == 0) {
+      return 1;
+    }
+
+    assert(ctx->block_used == block_size);
+
+    if (!EVP_Cipher(&ctx->cipher_ctx, scratch, ctx->block, block_size)) {
+      return 0;
+    }
+  }
+
+  // Encrypt all but one of the remaining blocks.
+  while (in_len > block_size) {
+    if (!EVP_Cipher(&ctx->cipher_ctx, scratch, in, block_size)) {
+      return 0;
+    }
+    in += block_size;
+    in_len -= block_size;
+  }
+
+  OPENSSL_memcpy(ctx->block, in, in_len);
+  ctx->block_used = in_len;
+
+  return 1;
+}
+
+int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len) {
+  size_t block_size = EVP_CIPHER_CTX_block_size(&ctx->cipher_ctx);
+  assert(block_size <= AES_BLOCK_SIZE);
+
+  *out_len = block_size;
+  if (out == NULL) {
+    return 1;
+  }
+
+  const uint8_t *mask = ctx->k1;
+
+  if (ctx->block_used != block_size) {
+    // If the last block is incomplete, terminate it with a single 'one' bit
+    // followed by zeros.
+    ctx->block[ctx->block_used] = 0x80;
+    OPENSSL_memset(ctx->block + ctx->block_used + 1, 0,
+                   block_size - (ctx->block_used + 1));
+
+    mask = ctx->k2;
+  }
+
+  for (unsigned i = 0; i < block_size; i++) {
+    out[i] = ctx->block[i] ^ mask[i];
+  }
+
+  return EVP_Cipher(&ctx->cipher_ctx, out, out, block_size);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c
new file mode 100644
index 0000000..5ae7f11
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c	
@@ -0,0 +1,810 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/conf.h>
+
+#include <string.h>
+#include <ctype.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/mem.h>
+
+#include "conf_def.h"
+#include "internal.h"
+#include "../internal.h"
+
+
+DEFINE_LHASH_OF(CONF_VALUE)
+
+struct conf_st {
+  LHASH_OF(CONF_VALUE) *data;
+};
+
+// The maximum length we can grow a value to after variable expansion. 64k
+// should be more than enough for all reasonable uses.
+#define MAX_CONF_VALUE_LENGTH 65536
+
+static uint32_t conf_value_hash(const CONF_VALUE *v) {
+  return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
+}
+
+static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) {
+  int i;
+
+  if (a->section != b->section) {
+    i = strcmp(a->section, b->section);
+    if (i) {
+      return i;
+    }
+  }
+
+  if (a->name != NULL && b->name != NULL) {
+    return strcmp(a->name, b->name);
+  } else if (a->name == b->name) {
+    return 0;
+  } else {
+    return (a->name == NULL) ? -1 : 1;
+  }
+}
+
+CONF *NCONF_new(void *method) {
+  CONF *conf;
+
+  if (method != NULL) {
+    return NULL;
+  }
+
+  conf = OPENSSL_malloc(sizeof(CONF));
+  if (conf == NULL) {
+    return NULL;
+  }
+
+  conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
+  if (conf->data == NULL) {
+    OPENSSL_free(conf);
+    return NULL;
+  }
+
+  return conf;
+}
+
+CONF_VALUE *CONF_VALUE_new(void) {
+  CONF_VALUE *v = OPENSSL_malloc(sizeof(CONF_VALUE));
+  if (!v) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(v, 0, sizeof(CONF_VALUE));
+  return v;
+}
+
+static void value_free_contents(CONF_VALUE *value) {
+  if (value->section) {
+    OPENSSL_free(value->section);
+  }
+  if (value->name) {
+    OPENSSL_free(value->name);
+    if (value->value) {
+      OPENSSL_free(value->value);
+    }
+  } else {
+    if (value->value) {
+      sk_CONF_VALUE_free((STACK_OF(CONF_VALUE)*)value->value);
+    }
+  }
+}
+
+static void value_free(CONF_VALUE *value) {
+  value_free_contents(value);
+  OPENSSL_free(value);
+}
+
+void NCONF_free(CONF *conf) {
+  if (conf == NULL || conf->data == NULL) {
+    return;
+  }
+
+  lh_CONF_VALUE_doall(conf->data, value_free);
+  lh_CONF_VALUE_free(conf->data);
+  OPENSSL_free(conf);
+}
+
+static CONF_VALUE *NCONF_new_section(const CONF *conf, const char *section) {
+  STACK_OF(CONF_VALUE) *sk = NULL;
+  int ok = 0;
+  CONF_VALUE *v = NULL, *old_value;
+
+  sk = sk_CONF_VALUE_new_null();
+  v = CONF_VALUE_new();
+  if (sk == NULL || v == NULL) {
+    goto err;
+  }
+  v->section = OPENSSL_strdup(section);
+  if (v->section == NULL) {
+    goto err;
+  }
+
+  v->name = NULL;
+  v->value = (char *)sk;
+
+  if (!lh_CONF_VALUE_insert(conf->data, &old_value, v)) {
+    goto err;
+  }
+  if (old_value) {
+    value_free(old_value);
+  }
+  ok = 1;
+
+err:
+  if (!ok) {
+    if (sk != NULL) {
+      sk_CONF_VALUE_free(sk);
+    }
+    if (v != NULL) {
+      OPENSSL_free(v);
+    }
+    v = NULL;
+  }
+  return v;
+}
+
+static int str_copy(CONF *conf, char *section, char **pto, char *from) {
+  int q, r, rr = 0, to = 0, len = 0;
+  char *s, *e, *rp, *rrp, *np, *cp, v;
+  const char *p;
+  BUF_MEM *buf;
+
+  buf = BUF_MEM_new();
+  if (buf == NULL) {
+    return 0;
+  }
+
+  len = strlen(from) + 1;
+  if (!BUF_MEM_grow(buf, len)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (IS_QUOTE(conf, *from)) {
+      q = *from;
+      from++;
+      while (!IS_EOF(conf, *from) && (*from != q)) {
+        if (IS_ESC(conf, *from)) {
+          from++;
+          if (IS_EOF(conf, *from)) {
+            break;
+          }
+        }
+        buf->data[to++] = *(from++);
+      }
+      if (*from == q) {
+        from++;
+      }
+    } else if (IS_DQUOTE(conf, *from)) {
+      q = *from;
+      from++;
+      while (!IS_EOF(conf, *from)) {
+        if (*from == q) {
+          if (*(from + 1) == q) {
+            from++;
+          } else {
+            break;
+          }
+        }
+        buf->data[to++] = *(from++);
+      }
+      if (*from == q) {
+        from++;
+      }
+    } else if (IS_ESC(conf, *from)) {
+      from++;
+      v = *(from++);
+      if (IS_EOF(conf, v)) {
+        break;
+      } else if (v == 'r') {
+        v = '\r';
+      } else if (v == 'n') {
+        v = '\n';
+      } else if (v == 'b') {
+        v = '\b';
+      } else if (v == 't') {
+        v = '\t';
+      }
+      buf->data[to++] = v;
+    } else if (IS_EOF(conf, *from)) {
+      break;
+    } else if (*from == '$') {
+      // try to expand it
+      rrp = NULL;
+      s = &(from[1]);
+      if (*s == '{') {
+        q = '}';
+      } else if (*s == '(') {
+        q = ')';
+      } else {
+        q = 0;
+      }
+
+      if (q) {
+        s++;
+      }
+      cp = section;
+      e = np = s;
+      while (IS_ALPHA_NUMERIC(conf, *e)) {
+        e++;
+      }
+      if (e[0] == ':' && e[1] == ':') {
+        cp = np;
+        rrp = e;
+        rr = *e;
+        *rrp = '\0';
+        e += 2;
+        np = e;
+        while (IS_ALPHA_NUMERIC(conf, *e)) {
+          e++;
+        }
+      }
+      r = *e;
+      *e = '\0';
+      rp = e;
+      if (q) {
+        if (r != q) {
+          OPENSSL_PUT_ERROR(CONF, CONF_R_NO_CLOSE_BRACE);
+          goto err;
+        }
+        e++;
+      }
+      // So at this point we have
+      // np which is the start of the name string which is
+      //   '\0' terminated.
+      // cp which is the start of the section string which is
+      //   '\0' terminated.
+      // e is the 'next point after'.
+      // r and rr are the chars replaced by the '\0'
+      // rp and rrp is where 'r' and 'rr' came from.
+      p = NCONF_get_string(conf, cp, np);
+      if (rrp != NULL) {
+        *rrp = rr;
+      }
+      *rp = r;
+      if (p == NULL) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_HAS_NO_VALUE);
+        goto err;
+      }
+      size_t newsize = strlen(p) + buf->length - (e - from);
+      if (newsize > MAX_CONF_VALUE_LENGTH) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG);
+        goto err;
+      }
+      if (!BUF_MEM_grow_clean(buf, newsize)) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      while (*p) {
+        buf->data[to++] = *(p++);
+      }
+
+      /* Since we change the pointer 'from', we also have
+         to change the perceived length of the string it
+         points at.  /RL */
+      len -= e - from;
+      from = e;
+
+      /* In case there were no braces or parenthesis around
+         the variable reference, we have to put back the
+         character that was replaced with a '\0'.  /RL */
+      *rp = r;
+    } else {
+      buf->data[to++] = *(from++);
+    }
+  }
+
+  buf->data[to] = '\0';
+  if (*pto != NULL) {
+    OPENSSL_free(*pto);
+  }
+  *pto = buf->data;
+  OPENSSL_free(buf);
+  return 1;
+
+err:
+  if (buf != NULL) {
+    BUF_MEM_free(buf);
+  }
+  return 0;
+}
+
+static CONF_VALUE *get_section(const CONF *conf, const char *section) {
+  CONF_VALUE template;
+
+  OPENSSL_memset(&template, 0, sizeof(template));
+  template.section = (char *) section;
+  return lh_CONF_VALUE_retrieve(conf->data, &template);
+}
+
+STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section) {
+  CONF_VALUE *section_value = get_section(conf, section);
+  if (section_value == NULL) {
+    return NULL;
+  }
+  return (STACK_OF(CONF_VALUE)*) section_value->value;
+}
+
+const char *NCONF_get_string(const CONF *conf, const char *section,
+                             const char *name) {
+  CONF_VALUE template, *value;
+
+  OPENSSL_memset(&template, 0, sizeof(template));
+  template.section = (char *) section;
+  template.name = (char *) name;
+  value = lh_CONF_VALUE_retrieve(conf->data, &template);
+  if (value == NULL) {
+    return NULL;
+  }
+  return value->value;
+}
+
+static int add_string(const CONF *conf, CONF_VALUE *section,
+                      CONF_VALUE *value) {
+  STACK_OF(CONF_VALUE) *section_stack = (STACK_OF(CONF_VALUE)*) section->value;
+  CONF_VALUE *old_value;
+
+  value->section = OPENSSL_strdup(section->section);
+  if (!sk_CONF_VALUE_push(section_stack, value)) {
+    return 0;
+  }
+
+  if (!lh_CONF_VALUE_insert(conf->data, &old_value, value)) {
+    return 0;
+  }
+  if (old_value != NULL) {
+    (void)sk_CONF_VALUE_delete_ptr(section_stack, old_value);
+    value_free(old_value);
+  }
+
+  return 1;
+}
+
+static char *eat_ws(CONF *conf, char *p) {
+  while (IS_WS(conf, *p) && !IS_EOF(conf, *p)) {
+    p++;
+  }
+  return p;
+}
+
+#define scan_esc(conf, p) (((IS_EOF((conf), (p)[1])) ? ((p) + 1) : ((p) + 2)))
+
+static char *eat_alpha_numeric(CONF *conf, char *p) {
+  for (;;) {
+    if (IS_ESC(conf, *p)) {
+      p = scan_esc(conf, p);
+      continue;
+    }
+    if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p)) {
+      return p;
+    }
+    p++;
+  }
+}
+
+static char *scan_quote(CONF *conf, char *p) {
+  int q = *p;
+
+  p++;
+  while (!IS_EOF(conf, *p) && *p != q) {
+    if (IS_ESC(conf, *p)) {
+      p++;
+      if (IS_EOF(conf, *p)) {
+        return p;
+      }
+    }
+    p++;
+  }
+  if (*p == q) {
+    p++;
+  }
+  return p;
+}
+
+
+static char *scan_dquote(CONF *conf, char *p) {
+  int q = *p;
+
+  p++;
+  while (!(IS_EOF(conf, *p))) {
+    if (*p == q) {
+      if (*(p + 1) == q) {
+        p++;
+      } else {
+        break;
+      }
+    }
+    p++;
+  }
+  if (*p == q) {
+    p++;
+  }
+  return p;
+}
+
+static void clear_comments(CONF *conf, char *p) {
+  for (;;) {
+    if (IS_FCOMMENT(conf, *p)) {
+      *p = '\0';
+      return;
+    }
+    if (!IS_WS(conf, *p)) {
+      break;
+    }
+    p++;
+  }
+
+  for (;;) {
+    if (IS_COMMENT(conf, *p)) {
+      *p = '\0';
+      return;
+    }
+    if (IS_DQUOTE(conf, *p)) {
+      p = scan_dquote(conf, p);
+      continue;
+    }
+    if (IS_QUOTE(conf, *p)) {
+      p = scan_quote(conf, p);
+      continue;
+    }
+    if (IS_ESC(conf, *p)) {
+      p = scan_esc(conf, p);
+      continue;
+    }
+    if (IS_EOF(conf, *p)) {
+      return;
+    } else {
+      p++;
+    }
+  }
+}
+
+static int def_load_bio(CONF *conf, BIO *in, long *out_error_line) {
+  static const size_t CONFBUFSIZE = 512;
+  int bufnum = 0, i, ii;
+  BUF_MEM *buff = NULL;
+  char *s, *p, *end;
+  int again;
+  long eline = 0;
+  char btmp[DECIMAL_SIZE(eline) + 1];
+  CONF_VALUE *v = NULL, *tv;
+  CONF_VALUE *sv = NULL;
+  char *section = NULL, *buf;
+  char *start, *psection, *pname;
+
+  if ((buff = BUF_MEM_new()) == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
+    goto err;
+  }
+
+  section = OPENSSL_strdup("default");
+  if (section == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  sv = NCONF_new_section(conf, section);
+  if (sv == NULL) {
+    OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+    goto err;
+  }
+
+  bufnum = 0;
+  again = 0;
+  for (;;) {
+    if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
+      OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
+      goto err;
+    }
+    p = &(buff->data[bufnum]);
+    *p = '\0';
+    BIO_gets(in, p, CONFBUFSIZE - 1);
+    p[CONFBUFSIZE - 1] = '\0';
+    ii = i = strlen(p);
+    if (i == 0 && !again) {
+      break;
+    }
+    again = 0;
+    while (i > 0) {
+      if ((p[i - 1] != '\r') && (p[i - 1] != '\n')) {
+        break;
+      } else {
+        i--;
+      }
+    }
+    // we removed some trailing stuff so there is a new
+    // line on the end.
+    if (ii && i == ii) {
+      again = 1;  // long line
+    } else {
+      p[i] = '\0';
+      eline++;  // another input line
+    }
+
+    // we now have a line with trailing \r\n removed
+
+    // i is the number of bytes
+    bufnum += i;
+
+    v = NULL;
+    // check for line continuation
+    if (bufnum >= 1) {
+      // If we have bytes and the last char '\\' and
+      // second last char is not '\\'
+      p = &(buff->data[bufnum - 1]);
+      if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
+        bufnum--;
+        again = 1;
+      }
+    }
+    if (again) {
+      continue;
+    }
+    bufnum = 0;
+    buf = buff->data;
+
+    clear_comments(conf, buf);
+    s = eat_ws(conf, buf);
+    if (IS_EOF(conf, *s)) {
+      continue;  // blank line
+    }
+    if (*s == '[') {
+      char *ss;
+
+      s++;
+      start = eat_ws(conf, s);
+      ss = start;
+    again:
+      end = eat_alpha_numeric(conf, ss);
+      p = eat_ws(conf, end);
+      if (*p != ']') {
+        if (*p != '\0' && ss != p) {
+          ss = p;
+          goto again;
+        }
+        OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
+        goto err;
+      }
+      *end = '\0';
+      if (!str_copy(conf, NULL, &section, start)) {
+        goto err;
+      }
+      if ((sv = get_section(conf, section)) == NULL) {
+        sv = NCONF_new_section(conf, section);
+      }
+      if (sv == NULL) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+        goto err;
+      }
+      continue;
+    } else {
+      pname = s;
+      psection = NULL;
+      end = eat_alpha_numeric(conf, s);
+      if ((end[0] == ':') && (end[1] == ':')) {
+        *end = '\0';
+        end += 2;
+        psection = pname;
+        pname = end;
+        end = eat_alpha_numeric(conf, end);
+      }
+      p = eat_ws(conf, end);
+      if (*p != '=') {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_EQUAL_SIGN);
+        goto err;
+      }
+      *end = '\0';
+      p++;
+      start = eat_ws(conf, p);
+      while (!IS_EOF(conf, *p)) {
+        p++;
+      }
+      p--;
+      while ((p != start) && (IS_WS(conf, *p))) {
+        p--;
+      }
+      p++;
+      *p = '\0';
+
+      if (!(v = CONF_VALUE_new())) {
+        goto err;
+      }
+      if (psection == NULL) {
+        psection = section;
+      }
+      v->name = OPENSSL_strdup(pname);
+      if (v->name == NULL) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      if (!str_copy(conf, psection, &(v->value), start)) {
+        goto err;
+      }
+
+      if (strcmp(psection, section) != 0) {
+        if ((tv = get_section(conf, psection)) == NULL) {
+          tv = NCONF_new_section(conf, psection);
+        }
+        if (tv == NULL) {
+          OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+          goto err;
+        }
+      } else {
+        tv = sv;
+      }
+      if (add_string(conf, tv, v) == 0) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      v = NULL;
+    }
+  }
+  if (buff != NULL) {
+    BUF_MEM_free(buff);
+  }
+  if (section != NULL) {
+    OPENSSL_free(section);
+  }
+  return 1;
+
+err:
+  if (buff != NULL) {
+    BUF_MEM_free(buff);
+  }
+  if (section != NULL) {
+    OPENSSL_free(section);
+  }
+  if (out_error_line != NULL) {
+    *out_error_line = eline;
+  }
+  BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
+  ERR_add_error_data(2, "line ", btmp);
+
+  if (v != NULL) {
+    if (v->name != NULL) {
+      OPENSSL_free(v->name);
+    }
+    if (v->value != NULL) {
+      OPENSSL_free(v->value);
+    }
+    if (v != NULL) {
+      OPENSSL_free(v);
+    }
+  }
+  return 0;
+}
+
+int NCONF_load(CONF *conf, const char *filename, long *out_error_line) {
+  BIO *in = BIO_new_file(filename, "rb");
+  int ret;
+
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_SYS_LIB);
+    return 0;
+  }
+
+  ret = def_load_bio(conf, in, out_error_line);
+  BIO_free(in);
+
+  return ret;
+}
+
+int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line) {
+  return def_load_bio(conf, bio, out_error_line);
+}
+
+int CONF_parse_list(const char *list, char sep, int remove_whitespace,
+                    int (*list_cb)(const char *elem, int len, void *usr),
+                    void *arg) {
+  int ret;
+  const char *lstart, *tmpend, *p;
+
+  if (list == NULL) {
+    OPENSSL_PUT_ERROR(CONF, CONF_R_LIST_CANNOT_BE_NULL);
+    return 0;
+  }
+
+  lstart = list;
+  for (;;) {
+    if (remove_whitespace) {
+      while (*lstart && isspace((unsigned char)*lstart)) {
+        lstart++;
+      }
+    }
+    p = strchr(lstart, sep);
+    if (p == lstart || !*lstart) {
+      ret = list_cb(NULL, 0, arg);
+    } else {
+      if (p) {
+        tmpend = p - 1;
+      } else {
+        tmpend = lstart + strlen(lstart) - 1;
+      }
+      if (remove_whitespace) {
+        while (isspace((unsigned char)*tmpend)) {
+          tmpend--;
+        }
+      }
+      ret = list_cb(lstart, tmpend - lstart + 1, arg);
+    }
+    if (ret <= 0) {
+      return ret;
+    }
+    if (p == NULL) {
+      return 1;
+    }
+    lstart = p + 1;
+  }
+}
+
+int CONF_modules_load_file(const char *filename, const char *appname,
+                           unsigned long flags) {
+  return 1;
+}
+
+void CONF_modules_free(void) {}
+
+void OPENSSL_config(const char *config_name) {}
+
+void OPENSSL_no_config(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c.grpc_back
new file mode 100644
index 0000000..7070ca8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf.c.grpc_back	
@@ -0,0 +1,810 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/conf.h>
+
+#include <string.h>
+#include <ctype.h>
+
+#include <openssl/bio.h>
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+
+#include "conf_def.h"
+#include "internal.h"
+#include "../internal.h"
+
+
+DEFINE_LHASH_OF(CONF_VALUE)
+
+struct conf_st {
+  LHASH_OF(CONF_VALUE) *data;
+};
+
+// The maximum length we can grow a value to after variable expansion. 64k
+// should be more than enough for all reasonable uses.
+#define MAX_CONF_VALUE_LENGTH 65536
+
+static uint32_t conf_value_hash(const CONF_VALUE *v) {
+  return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
+}
+
+static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) {
+  int i;
+
+  if (a->section != b->section) {
+    i = strcmp(a->section, b->section);
+    if (i) {
+      return i;
+    }
+  }
+
+  if (a->name != NULL && b->name != NULL) {
+    return strcmp(a->name, b->name);
+  } else if (a->name == b->name) {
+    return 0;
+  } else {
+    return (a->name == NULL) ? -1 : 1;
+  }
+}
+
+CONF *NCONF_new(void *method) {
+  CONF *conf;
+
+  if (method != NULL) {
+    return NULL;
+  }
+
+  conf = OPENSSL_malloc(sizeof(CONF));
+  if (conf == NULL) {
+    return NULL;
+  }
+
+  conf->data = lh_CONF_VALUE_new(conf_value_hash, conf_value_cmp);
+  if (conf->data == NULL) {
+    OPENSSL_free(conf);
+    return NULL;
+  }
+
+  return conf;
+}
+
+CONF_VALUE *CONF_VALUE_new(void) {
+  CONF_VALUE *v = OPENSSL_malloc(sizeof(CONF_VALUE));
+  if (!v) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(v, 0, sizeof(CONF_VALUE));
+  return v;
+}
+
+static void value_free_contents(CONF_VALUE *value) {
+  if (value->section) {
+    OPENSSL_free(value->section);
+  }
+  if (value->name) {
+    OPENSSL_free(value->name);
+    if (value->value) {
+      OPENSSL_free(value->value);
+    }
+  } else {
+    if (value->value) {
+      sk_CONF_VALUE_free((STACK_OF(CONF_VALUE)*)value->value);
+    }
+  }
+}
+
+static void value_free(CONF_VALUE *value) {
+  value_free_contents(value);
+  OPENSSL_free(value);
+}
+
+void NCONF_free(CONF *conf) {
+  if (conf == NULL || conf->data == NULL) {
+    return;
+  }
+
+  lh_CONF_VALUE_doall(conf->data, value_free);
+  lh_CONF_VALUE_free(conf->data);
+  OPENSSL_free(conf);
+}
+
+static CONF_VALUE *NCONF_new_section(const CONF *conf, const char *section) {
+  STACK_OF(CONF_VALUE) *sk = NULL;
+  int ok = 0;
+  CONF_VALUE *v = NULL, *old_value;
+
+  sk = sk_CONF_VALUE_new_null();
+  v = CONF_VALUE_new();
+  if (sk == NULL || v == NULL) {
+    goto err;
+  }
+  v->section = OPENSSL_strdup(section);
+  if (v->section == NULL) {
+    goto err;
+  }
+
+  v->name = NULL;
+  v->value = (char *)sk;
+
+  if (!lh_CONF_VALUE_insert(conf->data, &old_value, v)) {
+    goto err;
+  }
+  if (old_value) {
+    value_free(old_value);
+  }
+  ok = 1;
+
+err:
+  if (!ok) {
+    if (sk != NULL) {
+      sk_CONF_VALUE_free(sk);
+    }
+    if (v != NULL) {
+      OPENSSL_free(v);
+    }
+    v = NULL;
+  }
+  return v;
+}
+
+static int str_copy(CONF *conf, char *section, char **pto, char *from) {
+  int q, r, rr = 0, to = 0, len = 0;
+  char *s, *e, *rp, *rrp, *np, *cp, v;
+  const char *p;
+  BUF_MEM *buf;
+
+  buf = BUF_MEM_new();
+  if (buf == NULL) {
+    return 0;
+  }
+
+  len = strlen(from) + 1;
+  if (!BUF_MEM_grow(buf, len)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (IS_QUOTE(conf, *from)) {
+      q = *from;
+      from++;
+      while (!IS_EOF(conf, *from) && (*from != q)) {
+        if (IS_ESC(conf, *from)) {
+          from++;
+          if (IS_EOF(conf, *from)) {
+            break;
+          }
+        }
+        buf->data[to++] = *(from++);
+      }
+      if (*from == q) {
+        from++;
+      }
+    } else if (IS_DQUOTE(conf, *from)) {
+      q = *from;
+      from++;
+      while (!IS_EOF(conf, *from)) {
+        if (*from == q) {
+          if (*(from + 1) == q) {
+            from++;
+          } else {
+            break;
+          }
+        }
+        buf->data[to++] = *(from++);
+      }
+      if (*from == q) {
+        from++;
+      }
+    } else if (IS_ESC(conf, *from)) {
+      from++;
+      v = *(from++);
+      if (IS_EOF(conf, v)) {
+        break;
+      } else if (v == 'r') {
+        v = '\r';
+      } else if (v == 'n') {
+        v = '\n';
+      } else if (v == 'b') {
+        v = '\b';
+      } else if (v == 't') {
+        v = '\t';
+      }
+      buf->data[to++] = v;
+    } else if (IS_EOF(conf, *from)) {
+      break;
+    } else if (*from == '$') {
+      // try to expand it
+      rrp = NULL;
+      s = &(from[1]);
+      if (*s == '{') {
+        q = '}';
+      } else if (*s == '(') {
+        q = ')';
+      } else {
+        q = 0;
+      }
+
+      if (q) {
+        s++;
+      }
+      cp = section;
+      e = np = s;
+      while (IS_ALPHA_NUMERIC(conf, *e)) {
+        e++;
+      }
+      if (e[0] == ':' && e[1] == ':') {
+        cp = np;
+        rrp = e;
+        rr = *e;
+        *rrp = '\0';
+        e += 2;
+        np = e;
+        while (IS_ALPHA_NUMERIC(conf, *e)) {
+          e++;
+        }
+      }
+      r = *e;
+      *e = '\0';
+      rp = e;
+      if (q) {
+        if (r != q) {
+          OPENSSL_PUT_ERROR(CONF, CONF_R_NO_CLOSE_BRACE);
+          goto err;
+        }
+        e++;
+      }
+      // So at this point we have
+      // np which is the start of the name string which is
+      //   '\0' terminated.
+      // cp which is the start of the section string which is
+      //   '\0' terminated.
+      // e is the 'next point after'.
+      // r and rr are the chars replaced by the '\0'
+      // rp and rrp is where 'r' and 'rr' came from.
+      p = NCONF_get_string(conf, cp, np);
+      if (rrp != NULL) {
+        *rrp = rr;
+      }
+      *rp = r;
+      if (p == NULL) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_HAS_NO_VALUE);
+        goto err;
+      }
+      size_t newsize = strlen(p) + buf->length - (e - from);
+      if (newsize > MAX_CONF_VALUE_LENGTH) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG);
+        goto err;
+      }
+      if (!BUF_MEM_grow_clean(buf, newsize)) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      while (*p) {
+        buf->data[to++] = *(p++);
+      }
+
+      /* Since we change the pointer 'from', we also have
+         to change the perceived length of the string it
+         points at.  /RL */
+      len -= e - from;
+      from = e;
+
+      /* In case there were no braces or parenthesis around
+         the variable reference, we have to put back the
+         character that was replaced with a '\0'.  /RL */
+      *rp = r;
+    } else {
+      buf->data[to++] = *(from++);
+    }
+  }
+
+  buf->data[to] = '\0';
+  if (*pto != NULL) {
+    OPENSSL_free(*pto);
+  }
+  *pto = buf->data;
+  OPENSSL_free(buf);
+  return 1;
+
+err:
+  if (buf != NULL) {
+    BUF_MEM_free(buf);
+  }
+  return 0;
+}
+
+static CONF_VALUE *get_section(const CONF *conf, const char *section) {
+  CONF_VALUE template;
+
+  OPENSSL_memset(&template, 0, sizeof(template));
+  template.section = (char *) section;
+  return lh_CONF_VALUE_retrieve(conf->data, &template);
+}
+
+STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section) {
+  CONF_VALUE *section_value = get_section(conf, section);
+  if (section_value == NULL) {
+    return NULL;
+  }
+  return (STACK_OF(CONF_VALUE)*) section_value->value;
+}
+
+const char *NCONF_get_string(const CONF *conf, const char *section,
+                             const char *name) {
+  CONF_VALUE template, *value;
+
+  OPENSSL_memset(&template, 0, sizeof(template));
+  template.section = (char *) section;
+  template.name = (char *) name;
+  value = lh_CONF_VALUE_retrieve(conf->data, &template);
+  if (value == NULL) {
+    return NULL;
+  }
+  return value->value;
+}
+
+static int add_string(const CONF *conf, CONF_VALUE *section,
+                      CONF_VALUE *value) {
+  STACK_OF(CONF_VALUE) *section_stack = (STACK_OF(CONF_VALUE)*) section->value;
+  CONF_VALUE *old_value;
+
+  value->section = OPENSSL_strdup(section->section);
+  if (!sk_CONF_VALUE_push(section_stack, value)) {
+    return 0;
+  }
+
+  if (!lh_CONF_VALUE_insert(conf->data, &old_value, value)) {
+    return 0;
+  }
+  if (old_value != NULL) {
+    (void)sk_CONF_VALUE_delete_ptr(section_stack, old_value);
+    value_free(old_value);
+  }
+
+  return 1;
+}
+
+static char *eat_ws(CONF *conf, char *p) {
+  while (IS_WS(conf, *p) && !IS_EOF(conf, *p)) {
+    p++;
+  }
+  return p;
+}
+
+#define scan_esc(conf, p) (((IS_EOF((conf), (p)[1])) ? ((p) + 1) : ((p) + 2)))
+
+static char *eat_alpha_numeric(CONF *conf, char *p) {
+  for (;;) {
+    if (IS_ESC(conf, *p)) {
+      p = scan_esc(conf, p);
+      continue;
+    }
+    if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p)) {
+      return p;
+    }
+    p++;
+  }
+}
+
+static char *scan_quote(CONF *conf, char *p) {
+  int q = *p;
+
+  p++;
+  while (!IS_EOF(conf, *p) && *p != q) {
+    if (IS_ESC(conf, *p)) {
+      p++;
+      if (IS_EOF(conf, *p)) {
+        return p;
+      }
+    }
+    p++;
+  }
+  if (*p == q) {
+    p++;
+  }
+  return p;
+}
+
+
+static char *scan_dquote(CONF *conf, char *p) {
+  int q = *p;
+
+  p++;
+  while (!(IS_EOF(conf, *p))) {
+    if (*p == q) {
+      if (*(p + 1) == q) {
+        p++;
+      } else {
+        break;
+      }
+    }
+    p++;
+  }
+  if (*p == q) {
+    p++;
+  }
+  return p;
+}
+
+static void clear_comments(CONF *conf, char *p) {
+  for (;;) {
+    if (IS_FCOMMENT(conf, *p)) {
+      *p = '\0';
+      return;
+    }
+    if (!IS_WS(conf, *p)) {
+      break;
+    }
+    p++;
+  }
+
+  for (;;) {
+    if (IS_COMMENT(conf, *p)) {
+      *p = '\0';
+      return;
+    }
+    if (IS_DQUOTE(conf, *p)) {
+      p = scan_dquote(conf, p);
+      continue;
+    }
+    if (IS_QUOTE(conf, *p)) {
+      p = scan_quote(conf, p);
+      continue;
+    }
+    if (IS_ESC(conf, *p)) {
+      p = scan_esc(conf, p);
+      continue;
+    }
+    if (IS_EOF(conf, *p)) {
+      return;
+    } else {
+      p++;
+    }
+  }
+}
+
+static int def_load_bio(CONF *conf, BIO *in, long *out_error_line) {
+  static const size_t CONFBUFSIZE = 512;
+  int bufnum = 0, i, ii;
+  BUF_MEM *buff = NULL;
+  char *s, *p, *end;
+  int again;
+  long eline = 0;
+  char btmp[DECIMAL_SIZE(eline) + 1];
+  CONF_VALUE *v = NULL, *tv;
+  CONF_VALUE *sv = NULL;
+  char *section = NULL, *buf;
+  char *start, *psection, *pname;
+
+  if ((buff = BUF_MEM_new()) == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
+    goto err;
+  }
+
+  section = OPENSSL_strdup("default");
+  if (section == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  sv = NCONF_new_section(conf, section);
+  if (sv == NULL) {
+    OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+    goto err;
+  }
+
+  bufnum = 0;
+  again = 0;
+  for (;;) {
+    if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
+      OPENSSL_PUT_ERROR(CONF, ERR_R_BUF_LIB);
+      goto err;
+    }
+    p = &(buff->data[bufnum]);
+    *p = '\0';
+    BIO_gets(in, p, CONFBUFSIZE - 1);
+    p[CONFBUFSIZE - 1] = '\0';
+    ii = i = strlen(p);
+    if (i == 0 && !again) {
+      break;
+    }
+    again = 0;
+    while (i > 0) {
+      if ((p[i - 1] != '\r') && (p[i - 1] != '\n')) {
+        break;
+      } else {
+        i--;
+      }
+    }
+    // we removed some trailing stuff so there is a new
+    // line on the end.
+    if (ii && i == ii) {
+      again = 1;  // long line
+    } else {
+      p[i] = '\0';
+      eline++;  // another input line
+    }
+
+    // we now have a line with trailing \r\n removed
+
+    // i is the number of bytes
+    bufnum += i;
+
+    v = NULL;
+    // check for line continuation
+    if (bufnum >= 1) {
+      // If we have bytes and the last char '\\' and
+      // second last char is not '\\'
+      p = &(buff->data[bufnum - 1]);
+      if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
+        bufnum--;
+        again = 1;
+      }
+    }
+    if (again) {
+      continue;
+    }
+    bufnum = 0;
+    buf = buff->data;
+
+    clear_comments(conf, buf);
+    s = eat_ws(conf, buf);
+    if (IS_EOF(conf, *s)) {
+      continue;  // blank line
+    }
+    if (*s == '[') {
+      char *ss;
+
+      s++;
+      start = eat_ws(conf, s);
+      ss = start;
+    again:
+      end = eat_alpha_numeric(conf, ss);
+      p = eat_ws(conf, end);
+      if (*p != ']') {
+        if (*p != '\0' && ss != p) {
+          ss = p;
+          goto again;
+        }
+        OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
+        goto err;
+      }
+      *end = '\0';
+      if (!str_copy(conf, NULL, &section, start)) {
+        goto err;
+      }
+      if ((sv = get_section(conf, section)) == NULL) {
+        sv = NCONF_new_section(conf, section);
+      }
+      if (sv == NULL) {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+        goto err;
+      }
+      continue;
+    } else {
+      pname = s;
+      psection = NULL;
+      end = eat_alpha_numeric(conf, s);
+      if ((end[0] == ':') && (end[1] == ':')) {
+        *end = '\0';
+        end += 2;
+        psection = pname;
+        pname = end;
+        end = eat_alpha_numeric(conf, end);
+      }
+      p = eat_ws(conf, end);
+      if (*p != '=') {
+        OPENSSL_PUT_ERROR(CONF, CONF_R_MISSING_EQUAL_SIGN);
+        goto err;
+      }
+      *end = '\0';
+      p++;
+      start = eat_ws(conf, p);
+      while (!IS_EOF(conf, *p)) {
+        p++;
+      }
+      p--;
+      while ((p != start) && (IS_WS(conf, *p))) {
+        p--;
+      }
+      p++;
+      *p = '\0';
+
+      if (!(v = CONF_VALUE_new())) {
+        goto err;
+      }
+      if (psection == NULL) {
+        psection = section;
+      }
+      v->name = OPENSSL_strdup(pname);
+      if (v->name == NULL) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      if (!str_copy(conf, psection, &(v->value), start)) {
+        goto err;
+      }
+
+      if (strcmp(psection, section) != 0) {
+        if ((tv = get_section(conf, psection)) == NULL) {
+          tv = NCONF_new_section(conf, psection);
+        }
+        if (tv == NULL) {
+          OPENSSL_PUT_ERROR(CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+          goto err;
+        }
+      } else {
+        tv = sv;
+      }
+      if (add_string(conf, tv, v) == 0) {
+        OPENSSL_PUT_ERROR(CONF, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      v = NULL;
+    }
+  }
+  if (buff != NULL) {
+    BUF_MEM_free(buff);
+  }
+  if (section != NULL) {
+    OPENSSL_free(section);
+  }
+  return 1;
+
+err:
+  if (buff != NULL) {
+    BUF_MEM_free(buff);
+  }
+  if (section != NULL) {
+    OPENSSL_free(section);
+  }
+  if (out_error_line != NULL) {
+    *out_error_line = eline;
+  }
+  BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
+  ERR_add_error_data(2, "line ", btmp);
+
+  if (v != NULL) {
+    if (v->name != NULL) {
+      OPENSSL_free(v->name);
+    }
+    if (v->value != NULL) {
+      OPENSSL_free(v->value);
+    }
+    if (v != NULL) {
+      OPENSSL_free(v);
+    }
+  }
+  return 0;
+}
+
+int NCONF_load(CONF *conf, const char *filename, long *out_error_line) {
+  BIO *in = BIO_new_file(filename, "rb");
+  int ret;
+
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(CONF, ERR_R_SYS_LIB);
+    return 0;
+  }
+
+  ret = def_load_bio(conf, in, out_error_line);
+  BIO_free(in);
+
+  return ret;
+}
+
+int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line) {
+  return def_load_bio(conf, bio, out_error_line);
+}
+
+int CONF_parse_list(const char *list, char sep, int remove_whitespace,
+                    int (*list_cb)(const char *elem, int len, void *usr),
+                    void *arg) {
+  int ret;
+  const char *lstart, *tmpend, *p;
+
+  if (list == NULL) {
+    OPENSSL_PUT_ERROR(CONF, CONF_R_LIST_CANNOT_BE_NULL);
+    return 0;
+  }
+
+  lstart = list;
+  for (;;) {
+    if (remove_whitespace) {
+      while (*lstart && isspace((unsigned char)*lstart)) {
+        lstart++;
+      }
+    }
+    p = strchr(lstart, sep);
+    if (p == lstart || !*lstart) {
+      ret = list_cb(NULL, 0, arg);
+    } else {
+      if (p) {
+        tmpend = p - 1;
+      } else {
+        tmpend = lstart + strlen(lstart) - 1;
+      }
+      if (remove_whitespace) {
+        while (isspace((unsigned char)*tmpend)) {
+          tmpend--;
+        }
+      }
+      ret = list_cb(lstart, tmpend - lstart + 1, arg);
+    }
+    if (ret <= 0) {
+      return ret;
+    }
+    if (p == NULL) {
+      return 1;
+    }
+    lstart = p + 1;
+  }
+}
+
+int CONF_modules_load_file(const char *filename, const char *appname,
+                           unsigned long flags) {
+  return 1;
+}
+
+void CONF_modules_free(void) {}
+
+void OPENSSL_config(const char *config_name) {}
+
+void OPENSSL_no_config(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h
new file mode 100644
index 0000000..b1e6ba6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h	
@@ -0,0 +1,127 @@
+/* crypto/conf/conf_def.h */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* THIS FILE WAS AUTOMAGICALLY GENERATED!
+   Please modify and use keysets.pl to regenerate it. */
+
+#define CONF_NUMBER		1
+#define CONF_UPPER		2
+#define CONF_LOWER		4
+#define CONF_UNDER		256
+#define CONF_PUNCTUATION	512
+#define CONF_WS			16
+#define CONF_ESC		32
+#define CONF_QUOTE		64
+#define CONF_DQUOTE		1024
+#define CONF_COMMENT		128
+#define CONF_FCOMMENT		2048
+#define CONF_EOF		8
+#define CONF_HIGHBIT		4096
+#define CONF_ALPHA		(CONF_UPPER|CONF_LOWER)
+#define CONF_ALPHA_NUMERIC	(CONF_ALPHA|CONF_NUMBER|CONF_UNDER)
+#define CONF_ALPHA_NUMERIC_PUNCT (CONF_ALPHA|CONF_NUMBER|CONF_UNDER| \
+					CONF_PUNCTUATION)
+
+#define KEYTYPES(c)		CONF_type_default
+#define IS_COMMENT(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_COMMENT)
+#define IS_FCOMMENT(c,a)	(KEYTYPES(c)[(a)&0xff]&CONF_FCOMMENT)
+#define IS_EOF(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_EOF)
+#define IS_ESC(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_ESC)
+#define IS_NUMBER(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_NUMBER)
+#define IS_WS(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_WS)
+#define IS_ALPHA_NUMERIC(c,a)	(KEYTYPES(c)[(a)&0xff]&CONF_ALPHA_NUMERIC)
+#define IS_ALPHA_NUMERIC_PUNCT(c,a) \
+				(KEYTYPES(c)[(a)&0xff]&CONF_ALPHA_NUMERIC_PUNCT)
+#define IS_QUOTE(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_QUOTE)
+#define IS_DQUOTE(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_DQUOTE)
+#define IS_HIGHBIT(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_HIGHBIT)
+
+static const unsigned short CONF_type_default[256]={
+	0x0008,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0000,0x0010,0x0010,0x0000,0x0000,0x0010,0x0000,0x0000,
+	0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0010,0x0200,0x0040,0x0080,0x0000,0x0200,0x0200,0x0040,
+	0x0000,0x0000,0x0200,0x0200,0x0200,0x0200,0x0200,0x0200,
+	0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,
+	0x0001,0x0001,0x0000,0x0200,0x0000,0x0000,0x0000,0x0200,
+	0x0200,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0000,0x0020,0x0000,0x0200,0x0100,
+	0x0040,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0000,0x0200,0x0000,0x0200,0x0000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h.grpc_back
new file mode 100644
index 0000000..b1e6ba6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/conf_def.h.grpc_back	
@@ -0,0 +1,127 @@
+/* crypto/conf/conf_def.h */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* THIS FILE WAS AUTOMAGICALLY GENERATED!
+   Please modify and use keysets.pl to regenerate it. */
+
+#define CONF_NUMBER		1
+#define CONF_UPPER		2
+#define CONF_LOWER		4
+#define CONF_UNDER		256
+#define CONF_PUNCTUATION	512
+#define CONF_WS			16
+#define CONF_ESC		32
+#define CONF_QUOTE		64
+#define CONF_DQUOTE		1024
+#define CONF_COMMENT		128
+#define CONF_FCOMMENT		2048
+#define CONF_EOF		8
+#define CONF_HIGHBIT		4096
+#define CONF_ALPHA		(CONF_UPPER|CONF_LOWER)
+#define CONF_ALPHA_NUMERIC	(CONF_ALPHA|CONF_NUMBER|CONF_UNDER)
+#define CONF_ALPHA_NUMERIC_PUNCT (CONF_ALPHA|CONF_NUMBER|CONF_UNDER| \
+					CONF_PUNCTUATION)
+
+#define KEYTYPES(c)		CONF_type_default
+#define IS_COMMENT(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_COMMENT)
+#define IS_FCOMMENT(c,a)	(KEYTYPES(c)[(a)&0xff]&CONF_FCOMMENT)
+#define IS_EOF(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_EOF)
+#define IS_ESC(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_ESC)
+#define IS_NUMBER(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_NUMBER)
+#define IS_WS(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_WS)
+#define IS_ALPHA_NUMERIC(c,a)	(KEYTYPES(c)[(a)&0xff]&CONF_ALPHA_NUMERIC)
+#define IS_ALPHA_NUMERIC_PUNCT(c,a) \
+				(KEYTYPES(c)[(a)&0xff]&CONF_ALPHA_NUMERIC_PUNCT)
+#define IS_QUOTE(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_QUOTE)
+#define IS_DQUOTE(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_DQUOTE)
+#define IS_HIGHBIT(c,a)		(KEYTYPES(c)[(a)&0xff]&CONF_HIGHBIT)
+
+static const unsigned short CONF_type_default[256]={
+	0x0008,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0000,0x0010,0x0010,0x0000,0x0000,0x0010,0x0000,0x0000,
+	0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,
+	0x0010,0x0200,0x0040,0x0080,0x0000,0x0200,0x0200,0x0040,
+	0x0000,0x0000,0x0200,0x0200,0x0200,0x0200,0x0200,0x0200,
+	0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,
+	0x0001,0x0001,0x0000,0x0200,0x0000,0x0000,0x0000,0x0200,
+	0x0200,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,
+	0x0002,0x0002,0x0002,0x0000,0x0020,0x0000,0x0200,0x0100,
+	0x0040,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004,
+	0x0004,0x0004,0x0004,0x0000,0x0200,0x0000,0x0200,0x0000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,0x1000,
+	};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h
new file mode 100644
index 0000000..3e0e57d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h	
@@ -0,0 +1,31 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CONF_VALUE_new returns a freshly allocated and zeroed |CONF_VALUE|.
+CONF_VALUE *CONF_VALUE_new(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h.grpc_back
new file mode 100644
index 0000000..3e0e57d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/conf/internal.h.grpc_back	
@@ -0,0 +1,31 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CONF_VALUE_new returns a freshly allocated and zeroed |CONF_VALUE|.
+CONF_VALUE *CONF_VALUE_new(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_CONF_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c
new file mode 100644
index 0000000..26d2008
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c	
@@ -0,0 +1,55 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/cpu.h>
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_FUCHSIA) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <zircon/features.h>
+#include <zircon/syscalls.h>
+#include <zircon/types.h>
+
+#include <openssl_grpc/arm_arch.h>
+
+#include "internal.h"
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  uint32_t hwcap;
+  zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &hwcap);
+  if (rc != ZX_OK || (hwcap & ZX_ARM64_FEATURE_ISA_ASIMD) == 0) {
+    // Matching OpenSSL, if NEON/ASIMD is missing, don't report other features
+    // either.
+    return;
+  }
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (hwcap & ZX_ARM64_FEATURE_ISA_AES) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_PMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_SHA1) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_SHA2) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c.grpc_back
new file mode 100644
index 0000000..98303a0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-fuchsia.c.grpc_back	
@@ -0,0 +1,55 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_FUCHSIA) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <zircon/features.h>
+#include <zircon/syscalls.h>
+#include <zircon/types.h>
+
+#include <openssl/arm_arch.h>
+
+#include "internal.h"
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  uint32_t hwcap;
+  zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &hwcap);
+  if (rc != ZX_OK || (hwcap & ZX_ARM64_FEATURE_ISA_ASIMD) == 0) {
+    // Matching OpenSSL, if NEON/ASIMD is missing, don't report other features
+    // either.
+    return;
+  }
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (hwcap & ZX_ARM64_FEATURE_ISA_AES) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_PMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_SHA1) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (hwcap & ZX_ARM64_FEATURE_ISA_SHA2) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c
new file mode 100644
index 0000000..d6aa0db
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c	
@@ -0,0 +1,62 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/cpu.h>
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_LINUX) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <sys/auxv.h>
+
+#include <openssl_grpc/arm_arch.h>
+
+#include "internal.h"
+
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  unsigned long hwcap = getauxval(AT_HWCAP);
+
+  // See /usr/include/asm/hwcap.h on an aarch64 installation for the source of
+  // these values.
+  static const unsigned long kNEON = 1 << 1;
+  static const unsigned long kAES = 1 << 3;
+  static const unsigned long kPMULL = 1 << 4;
+  static const unsigned long kSHA1 = 1 << 5;
+  static const unsigned long kSHA256 = 1 << 6;
+
+  if ((hwcap & kNEON) == 0) {
+    // Matching OpenSSL, if NEON is missing, don't report other features
+    // either.
+    return;
+  }
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (hwcap & kAES) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (hwcap & kPMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (hwcap & kSHA1) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (hwcap & kSHA256) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c.grpc_back
new file mode 100644
index 0000000..0184dd4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-aarch64-linux.c.grpc_back	
@@ -0,0 +1,62 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_LINUX) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <sys/auxv.h>
+
+#include <openssl/arm_arch.h>
+
+#include "internal.h"
+
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  unsigned long hwcap = getauxval(AT_HWCAP);
+
+  // See /usr/include/asm/hwcap.h on an aarch64 installation for the source of
+  // these values.
+  static const unsigned long kNEON = 1 << 1;
+  static const unsigned long kAES = 1 << 3;
+  static const unsigned long kPMULL = 1 << 4;
+  static const unsigned long kSHA1 = 1 << 5;
+  static const unsigned long kSHA256 = 1 << 6;
+
+  if ((hwcap & kNEON) == 0) {
+    // Matching OpenSSL, if NEON is missing, don't report other features
+    // either.
+    return;
+  }
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (hwcap & kAES) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (hwcap & kPMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (hwcap & kSHA1) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (hwcap & kSHA256) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c
new file mode 100644
index 0000000..1cde16f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c	
@@ -0,0 +1,218 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/cpu.h>
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_STATIC_ARMCAP)
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <openssl_grpc/arm_arch.h>
+#include <openssl_grpc/mem.h>
+
+#include "cpu-arm-linux.h"
+
+#define AT_HWCAP 16
+#define AT_HWCAP2 26
+
+// |getauxval| is not available on Android until API level 20. Link it as a weak
+// symbol and use other methods as fallback.
+unsigned long getauxval(unsigned long type) __attribute__((weak));
+
+static int open_eintr(const char *path, int flags) {
+  int ret;
+  do {
+    ret = open(path, flags);
+  } while (ret < 0 && errno == EINTR);
+  return ret;
+}
+
+static ssize_t read_eintr(int fd, void *out, size_t len) {
+  ssize_t ret;
+  do {
+    ret = read(fd, out, len);
+  } while (ret < 0 && errno == EINTR);
+  return ret;
+}
+
+// read_full reads exactly |len| bytes from |fd| to |out|. On error or end of
+// file, it returns zero.
+static int read_full(int fd, void *out, size_t len) {
+  char *outp = out;
+  while (len > 0) {
+    ssize_t ret = read_eintr(fd, outp, len);
+    if (ret <= 0) {
+      return 0;
+    }
+    outp += ret;
+    len -= ret;
+  }
+  return 1;
+}
+
+// read_file opens |path| and reads until end-of-file. On success, it returns
+// one and sets |*out_ptr| and |*out_len| to a newly-allocated buffer with the
+// contents. Otherwise, it returns zero.
+static int read_file(char **out_ptr, size_t *out_len, const char *path) {
+  int fd = open_eintr(path, O_RDONLY);
+  if (fd < 0) {
+    return 0;
+  }
+
+  static const size_t kReadSize = 1024;
+  int ret = 0;
+  size_t cap = kReadSize, len = 0;
+  char *buf = OPENSSL_malloc(cap);
+  if (buf == NULL) {
+    goto err;
+  }
+
+  for (;;) {
+    if (cap - len < kReadSize) {
+      size_t new_cap = cap * 2;
+      if (new_cap < cap) {
+        goto err;
+      }
+      char *new_buf = OPENSSL_realloc(buf, new_cap);
+      if (new_buf == NULL) {
+        goto err;
+      }
+      buf = new_buf;
+      cap = new_cap;
+    }
+
+    ssize_t bytes_read = read_eintr(fd, buf + len, kReadSize);
+    if (bytes_read < 0) {
+      goto err;
+    }
+    if (bytes_read == 0) {
+      break;
+    }
+    len += bytes_read;
+  }
+
+  *out_ptr = buf;
+  *out_len = len;
+  ret = 1;
+  buf = NULL;
+
+err:
+  OPENSSL_free(buf);
+  close(fd);
+  return ret;
+}
+
+// getauxval_proc behaves like |getauxval| but reads from /proc/self/auxv.
+static unsigned long getauxval_proc(unsigned long type) {
+  int fd = open_eintr("/proc/self/auxv", O_RDONLY);
+  if (fd < 0) {
+    return 0;
+  }
+
+  struct {
+    unsigned long tag;
+    unsigned long value;
+  } entry;
+
+  for (;;) {
+    if (!read_full(fd, &entry, sizeof(entry)) ||
+        (entry.tag == 0 && entry.value == 0)) {
+      break;
+    }
+    if (entry.tag == type) {
+      close(fd);
+      return entry.value;
+    }
+  }
+  close(fd);
+  return 0;
+}
+
+extern uint32_t OPENSSL_armcap_P;
+
+static int g_has_broken_neon, g_needs_hwcap2_workaround;
+
+void OPENSSL_cpuid_setup(void) {
+  char *cpuinfo_data;
+  size_t cpuinfo_len;
+  if (!read_file(&cpuinfo_data, &cpuinfo_len, "/proc/cpuinfo")) {
+    return;
+  }
+  STRING_PIECE cpuinfo;
+  cpuinfo.data = cpuinfo_data;
+  cpuinfo.len = cpuinfo_len;
+
+  // |getauxval| is not available on Android until API level 20. If it is
+  // unavailable, read from /proc/self/auxv as a fallback. This is unreadable
+  // on some versions of Android, so further fall back to /proc/cpuinfo.
+  //
+  // See
+  // https://android.googlesource.com/platform/ndk/+/882ac8f3392858991a0e1af33b4b7387ec856bd2
+  // and b/13679666 (Google-internal) for details.
+  unsigned long hwcap = 0;
+  if (getauxval != NULL) {
+    hwcap = getauxval(AT_HWCAP);
+  }
+  if (hwcap == 0) {
+    hwcap = getauxval_proc(AT_HWCAP);
+  }
+  if (hwcap == 0) {
+    hwcap = crypto_get_arm_hwcap_from_cpuinfo(&cpuinfo);
+  }
+
+  // Clear NEON support if known broken.
+  g_has_broken_neon = crypto_cpuinfo_has_broken_neon(&cpuinfo);
+  if (g_has_broken_neon) {
+    hwcap &= ~HWCAP_NEON;
+  }
+
+  // Matching OpenSSL, only report other features if NEON is present.
+  if (hwcap & HWCAP_NEON) {
+    OPENSSL_armcap_P |= ARMV7_NEON;
+
+    // Some ARMv8 Android devices don't expose AT_HWCAP2. Fall back to
+    // /proc/cpuinfo. See https://crbug.com/596156.
+    unsigned long hwcap2 = 0;
+    if (getauxval != NULL) {
+      hwcap2 = getauxval(AT_HWCAP2);
+    }
+    if (hwcap2 == 0) {
+      hwcap2 = crypto_get_arm_hwcap2_from_cpuinfo(&cpuinfo);
+      g_needs_hwcap2_workaround = hwcap2 != 0;
+    }
+
+    if (hwcap2 & HWCAP2_AES) {
+      OPENSSL_armcap_P |= ARMV8_AES;
+    }
+    if (hwcap2 & HWCAP2_PMULL) {
+      OPENSSL_armcap_P |= ARMV8_PMULL;
+    }
+    if (hwcap2 & HWCAP2_SHA1) {
+      OPENSSL_armcap_P |= ARMV8_SHA1;
+    }
+    if (hwcap2 & HWCAP2_SHA2) {
+      OPENSSL_armcap_P |= ARMV8_SHA256;
+    }
+  }
+
+  OPENSSL_free(cpuinfo_data);
+}
+
+int CRYPTO_has_broken_NEON(void) { return g_has_broken_neon; }
+
+int CRYPTO_needs_hwcap2_workaround(void) { return g_needs_hwcap2_workaround; }
+
+#endif  // OPENSSL_ARM && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c.grpc_back
new file mode 100644
index 0000000..ed30715
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.c.grpc_back	
@@ -0,0 +1,218 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_STATIC_ARMCAP)
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <openssl/arm_arch.h>
+#include <openssl/mem.h>
+
+#include "cpu-arm-linux.h"
+
+#define AT_HWCAP 16
+#define AT_HWCAP2 26
+
+// |getauxval| is not available on Android until API level 20. Link it as a weak
+// symbol and use other methods as fallback.
+unsigned long getauxval(unsigned long type) __attribute__((weak));
+
+static int open_eintr(const char *path, int flags) {
+  int ret;
+  do {
+    ret = open(path, flags);
+  } while (ret < 0 && errno == EINTR);
+  return ret;
+}
+
+static ssize_t read_eintr(int fd, void *out, size_t len) {
+  ssize_t ret;
+  do {
+    ret = read(fd, out, len);
+  } while (ret < 0 && errno == EINTR);
+  return ret;
+}
+
+// read_full reads exactly |len| bytes from |fd| to |out|. On error or end of
+// file, it returns zero.
+static int read_full(int fd, void *out, size_t len) {
+  char *outp = out;
+  while (len > 0) {
+    ssize_t ret = read_eintr(fd, outp, len);
+    if (ret <= 0) {
+      return 0;
+    }
+    outp += ret;
+    len -= ret;
+  }
+  return 1;
+}
+
+// read_file opens |path| and reads until end-of-file. On success, it returns
+// one and sets |*out_ptr| and |*out_len| to a newly-allocated buffer with the
+// contents. Otherwise, it returns zero.
+static int read_file(char **out_ptr, size_t *out_len, const char *path) {
+  int fd = open_eintr(path, O_RDONLY);
+  if (fd < 0) {
+    return 0;
+  }
+
+  static const size_t kReadSize = 1024;
+  int ret = 0;
+  size_t cap = kReadSize, len = 0;
+  char *buf = OPENSSL_malloc(cap);
+  if (buf == NULL) {
+    goto err;
+  }
+
+  for (;;) {
+    if (cap - len < kReadSize) {
+      size_t new_cap = cap * 2;
+      if (new_cap < cap) {
+        goto err;
+      }
+      char *new_buf = OPENSSL_realloc(buf, new_cap);
+      if (new_buf == NULL) {
+        goto err;
+      }
+      buf = new_buf;
+      cap = new_cap;
+    }
+
+    ssize_t bytes_read = read_eintr(fd, buf + len, kReadSize);
+    if (bytes_read < 0) {
+      goto err;
+    }
+    if (bytes_read == 0) {
+      break;
+    }
+    len += bytes_read;
+  }
+
+  *out_ptr = buf;
+  *out_len = len;
+  ret = 1;
+  buf = NULL;
+
+err:
+  OPENSSL_free(buf);
+  close(fd);
+  return ret;
+}
+
+// getauxval_proc behaves like |getauxval| but reads from /proc/self/auxv.
+static unsigned long getauxval_proc(unsigned long type) {
+  int fd = open_eintr("/proc/self/auxv", O_RDONLY);
+  if (fd < 0) {
+    return 0;
+  }
+
+  struct {
+    unsigned long tag;
+    unsigned long value;
+  } entry;
+
+  for (;;) {
+    if (!read_full(fd, &entry, sizeof(entry)) ||
+        (entry.tag == 0 && entry.value == 0)) {
+      break;
+    }
+    if (entry.tag == type) {
+      close(fd);
+      return entry.value;
+    }
+  }
+  close(fd);
+  return 0;
+}
+
+extern uint32_t OPENSSL_armcap_P;
+
+static int g_has_broken_neon, g_needs_hwcap2_workaround;
+
+void OPENSSL_cpuid_setup(void) {
+  char *cpuinfo_data;
+  size_t cpuinfo_len;
+  if (!read_file(&cpuinfo_data, &cpuinfo_len, "/proc/cpuinfo")) {
+    return;
+  }
+  STRING_PIECE cpuinfo;
+  cpuinfo.data = cpuinfo_data;
+  cpuinfo.len = cpuinfo_len;
+
+  // |getauxval| is not available on Android until API level 20. If it is
+  // unavailable, read from /proc/self/auxv as a fallback. This is unreadable
+  // on some versions of Android, so further fall back to /proc/cpuinfo.
+  //
+  // See
+  // https://android.googlesource.com/platform/ndk/+/882ac8f3392858991a0e1af33b4b7387ec856bd2
+  // and b/13679666 (Google-internal) for details.
+  unsigned long hwcap = 0;
+  if (getauxval != NULL) {
+    hwcap = getauxval(AT_HWCAP);
+  }
+  if (hwcap == 0) {
+    hwcap = getauxval_proc(AT_HWCAP);
+  }
+  if (hwcap == 0) {
+    hwcap = crypto_get_arm_hwcap_from_cpuinfo(&cpuinfo);
+  }
+
+  // Clear NEON support if known broken.
+  g_has_broken_neon = crypto_cpuinfo_has_broken_neon(&cpuinfo);
+  if (g_has_broken_neon) {
+    hwcap &= ~HWCAP_NEON;
+  }
+
+  // Matching OpenSSL, only report other features if NEON is present.
+  if (hwcap & HWCAP_NEON) {
+    OPENSSL_armcap_P |= ARMV7_NEON;
+
+    // Some ARMv8 Android devices don't expose AT_HWCAP2. Fall back to
+    // /proc/cpuinfo. See https://crbug.com/596156.
+    unsigned long hwcap2 = 0;
+    if (getauxval != NULL) {
+      hwcap2 = getauxval(AT_HWCAP2);
+    }
+    if (hwcap2 == 0) {
+      hwcap2 = crypto_get_arm_hwcap2_from_cpuinfo(&cpuinfo);
+      g_needs_hwcap2_workaround = hwcap2 != 0;
+    }
+
+    if (hwcap2 & HWCAP2_AES) {
+      OPENSSL_armcap_P |= ARMV8_AES;
+    }
+    if (hwcap2 & HWCAP2_PMULL) {
+      OPENSSL_armcap_P |= ARMV8_PMULL;
+    }
+    if (hwcap2 & HWCAP2_SHA1) {
+      OPENSSL_armcap_P |= ARMV8_SHA1;
+    }
+    if (hwcap2 & HWCAP2_SHA2) {
+      OPENSSL_armcap_P |= ARMV8_SHA256;
+    }
+  }
+
+  OPENSSL_free(cpuinfo_data);
+}
+
+int CRYPTO_has_broken_NEON(void) { return g_has_broken_neon; }
+
+int CRYPTO_needs_hwcap2_workaround(void) { return g_needs_hwcap2_workaround; }
+
+#endif  // OPENSSL_ARM && !OPENSSL_STATIC_ARMCAP
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h
new file mode 100644
index 0000000..0fd8c69
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h	
@@ -0,0 +1,201 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
+#define OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
+
+#include <openssl_grpc/base.h>
+
+#include <string.h>
+
+#include "internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The cpuinfo parser lives in a header file so it may be accessible from
+// cross-platform fuzzers without adding code to those platforms normally.
+
+#define HWCAP_NEON (1 << 12)
+
+// See /usr/include/asm/hwcap.h on an ARM installation for the source of
+// these values.
+#define HWCAP2_AES (1 << 0)
+#define HWCAP2_PMULL (1 << 1)
+#define HWCAP2_SHA1 (1 << 2)
+#define HWCAP2_SHA2 (1 << 3)
+
+typedef struct {
+  const char *data;
+  size_t len;
+} STRING_PIECE;
+
+static int STRING_PIECE_equals(const STRING_PIECE *a, const char *b) {
+  size_t b_len = strlen(b);
+  return a->len == b_len && OPENSSL_memcmp(a->data, b, b_len) == 0;
+}
+
+// STRING_PIECE_split finds the first occurence of |sep| in |in| and, if found,
+// sets |*out_left| and |*out_right| to |in| split before and after it. It
+// returns one if |sep| was found and zero otherwise.
+static int STRING_PIECE_split(STRING_PIECE *out_left, STRING_PIECE *out_right,
+                              const STRING_PIECE *in, char sep) {
+  const char *p = (const char *)OPENSSL_memchr(in->data, sep, in->len);
+  if (p == NULL) {
+    return 0;
+  }
+  // |out_left| or |out_right| may alias |in|, so make a copy.
+  STRING_PIECE in_copy = *in;
+  out_left->data = in_copy.data;
+  out_left->len = p - in_copy.data;
+  out_right->data = in_copy.data + out_left->len + 1;
+  out_right->len = in_copy.len - out_left->len - 1;
+  return 1;
+}
+
+// STRING_PIECE_get_delimited reads a |sep|-delimited entry from |s|, writing it
+// to |out| and updating |s| to point beyond it. It returns one on success and
+// zero if |s| is empty. If |s| is has no copies of |sep| and is non-empty, it
+// reads the entire string to |out|.
+static int STRING_PIECE_get_delimited(STRING_PIECE *s, STRING_PIECE *out, char sep) {
+  if (s->len == 0) {
+    return 0;
+  }
+  if (!STRING_PIECE_split(out, s, s, sep)) {
+    // |s| had no instances of |sep|. Return the entire string.
+    *out = *s;
+    s->data += s->len;
+    s->len = 0;
+  }
+  return 1;
+}
+
+// STRING_PIECE_trim removes leading and trailing whitespace from |s|.
+static void STRING_PIECE_trim(STRING_PIECE *s) {
+  while (s->len != 0 && (s->data[0] == ' ' || s->data[0] == '\t')) {
+    s->data++;
+    s->len--;
+  }
+  while (s->len != 0 &&
+         (s->data[s->len - 1] == ' ' || s->data[s->len - 1] == '\t')) {
+    s->len--;
+  }
+}
+
+// extract_cpuinfo_field extracts a /proc/cpuinfo field named |field| from
+// |in|. If found, it sets |*out| to the value and returns one. Otherwise, it
+// returns zero.
+static int extract_cpuinfo_field(STRING_PIECE *out, const STRING_PIECE *in,
+                                 const char *field) {
+  // Process |in| one line at a time.
+  STRING_PIECE remaining = *in, line;
+  while (STRING_PIECE_get_delimited(&remaining, &line, '\n')) {
+    STRING_PIECE key, value;
+    if (!STRING_PIECE_split(&key, &value, &line, ':')) {
+      continue;
+    }
+    STRING_PIECE_trim(&key);
+    if (STRING_PIECE_equals(&key, field)) {
+      STRING_PIECE_trim(&value);
+      *out = value;
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+static int cpuinfo_field_equals(const STRING_PIECE *cpuinfo, const char *field,
+                                const char *value) {
+  STRING_PIECE extracted;
+  return extract_cpuinfo_field(&extracted, cpuinfo, field) &&
+         STRING_PIECE_equals(&extracted, value);
+}
+
+// has_list_item treats |list| as a space-separated list of items and returns
+// one if |item| is contained in |list| and zero otherwise.
+static int has_list_item(const STRING_PIECE *list, const char *item) {
+  STRING_PIECE remaining = *list, feature;
+  while (STRING_PIECE_get_delimited(&remaining, &feature, ' ')) {
+    if (STRING_PIECE_equals(&feature, item)) {
+      return 1;
+    }
+  }
+  return 0;
+}
+
+// crypto_get_arm_hwcap_from_cpuinfo returns an equivalent ARM |AT_HWCAP| value
+// from |cpuinfo|.
+static unsigned long crypto_get_arm_hwcap_from_cpuinfo(
+    const STRING_PIECE *cpuinfo) {
+  if (cpuinfo_field_equals(cpuinfo, "CPU architecture", "8")) {
+    // This is a 32-bit ARM binary running on a 64-bit kernel. NEON is always
+    // available on ARMv8. Linux omits required features, so reading the
+    // "Features" line does not work. (For simplicity, use strict equality. We
+    // assume everything running on future ARM architectures will have a
+    // working |getauxval|.)
+    return HWCAP_NEON;
+  }
+
+  STRING_PIECE features;
+  if (extract_cpuinfo_field(&features, cpuinfo, "Features") &&
+      has_list_item(&features, "neon")) {
+    return HWCAP_NEON;
+  }
+  return 0;
+}
+
+// crypto_get_arm_hwcap2_from_cpuinfo returns an equivalent ARM |AT_HWCAP2|
+// value from |cpuinfo|.
+static unsigned long crypto_get_arm_hwcap2_from_cpuinfo(
+    const STRING_PIECE *cpuinfo) {
+  STRING_PIECE features;
+  if (!extract_cpuinfo_field(&features, cpuinfo, "Features")) {
+    return 0;
+  }
+
+  unsigned long ret = 0;
+  if (has_list_item(&features, "aes")) {
+    ret |= HWCAP2_AES;
+  }
+  if (has_list_item(&features, "pmull")) {
+    ret |= HWCAP2_PMULL;
+  }
+  if (has_list_item(&features, "sha1")) {
+    ret |= HWCAP2_SHA1;
+  }
+  if (has_list_item(&features, "sha2")) {
+    ret |= HWCAP2_SHA2;
+  }
+  return ret;
+}
+
+// crypto_cpuinfo_has_broken_neon returns one if |cpuinfo| matches a CPU known
+// to have broken NEON unit and zero otherwise. See https://crbug.com/341598.
+static int crypto_cpuinfo_has_broken_neon(const STRING_PIECE *cpuinfo) {
+  return cpuinfo_field_equals(cpuinfo, "CPU implementer", "0x51") &&
+         cpuinfo_field_equals(cpuinfo, "CPU architecture", "7") &&
+         cpuinfo_field_equals(cpuinfo, "CPU variant", "0x1") &&
+         cpuinfo_field_equals(cpuinfo, "CPU part", "0x04d") &&
+         cpuinfo_field_equals(cpuinfo, "CPU revision", "0");
+}
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h.grpc_back
new file mode 100644
index 0000000..e326285
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm-linux.h.grpc_back	
@@ -0,0 +1,201 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
+#define OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
+
+#include <openssl/base.h>
+
+#include <string.h>
+
+#include "internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The cpuinfo parser lives in a header file so it may be accessible from
+// cross-platform fuzzers without adding code to those platforms normally.
+
+#define HWCAP_NEON (1 << 12)
+
+// See /usr/include/asm/hwcap.h on an ARM installation for the source of
+// these values.
+#define HWCAP2_AES (1 << 0)
+#define HWCAP2_PMULL (1 << 1)
+#define HWCAP2_SHA1 (1 << 2)
+#define HWCAP2_SHA2 (1 << 3)
+
+typedef struct {
+  const char *data;
+  size_t len;
+} STRING_PIECE;
+
+static int STRING_PIECE_equals(const STRING_PIECE *a, const char *b) {
+  size_t b_len = strlen(b);
+  return a->len == b_len && OPENSSL_memcmp(a->data, b, b_len) == 0;
+}
+
+// STRING_PIECE_split finds the first occurence of |sep| in |in| and, if found,
+// sets |*out_left| and |*out_right| to |in| split before and after it. It
+// returns one if |sep| was found and zero otherwise.
+static int STRING_PIECE_split(STRING_PIECE *out_left, STRING_PIECE *out_right,
+                              const STRING_PIECE *in, char sep) {
+  const char *p = (const char *)OPENSSL_memchr(in->data, sep, in->len);
+  if (p == NULL) {
+    return 0;
+  }
+  // |out_left| or |out_right| may alias |in|, so make a copy.
+  STRING_PIECE in_copy = *in;
+  out_left->data = in_copy.data;
+  out_left->len = p - in_copy.data;
+  out_right->data = in_copy.data + out_left->len + 1;
+  out_right->len = in_copy.len - out_left->len - 1;
+  return 1;
+}
+
+// STRING_PIECE_get_delimited reads a |sep|-delimited entry from |s|, writing it
+// to |out| and updating |s| to point beyond it. It returns one on success and
+// zero if |s| is empty. If |s| is has no copies of |sep| and is non-empty, it
+// reads the entire string to |out|.
+static int STRING_PIECE_get_delimited(STRING_PIECE *s, STRING_PIECE *out, char sep) {
+  if (s->len == 0) {
+    return 0;
+  }
+  if (!STRING_PIECE_split(out, s, s, sep)) {
+    // |s| had no instances of |sep|. Return the entire string.
+    *out = *s;
+    s->data += s->len;
+    s->len = 0;
+  }
+  return 1;
+}
+
+// STRING_PIECE_trim removes leading and trailing whitespace from |s|.
+static void STRING_PIECE_trim(STRING_PIECE *s) {
+  while (s->len != 0 && (s->data[0] == ' ' || s->data[0] == '\t')) {
+    s->data++;
+    s->len--;
+  }
+  while (s->len != 0 &&
+         (s->data[s->len - 1] == ' ' || s->data[s->len - 1] == '\t')) {
+    s->len--;
+  }
+}
+
+// extract_cpuinfo_field extracts a /proc/cpuinfo field named |field| from
+// |in|. If found, it sets |*out| to the value and returns one. Otherwise, it
+// returns zero.
+static int extract_cpuinfo_field(STRING_PIECE *out, const STRING_PIECE *in,
+                                 const char *field) {
+  // Process |in| one line at a time.
+  STRING_PIECE remaining = *in, line;
+  while (STRING_PIECE_get_delimited(&remaining, &line, '\n')) {
+    STRING_PIECE key, value;
+    if (!STRING_PIECE_split(&key, &value, &line, ':')) {
+      continue;
+    }
+    STRING_PIECE_trim(&key);
+    if (STRING_PIECE_equals(&key, field)) {
+      STRING_PIECE_trim(&value);
+      *out = value;
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+static int cpuinfo_field_equals(const STRING_PIECE *cpuinfo, const char *field,
+                                const char *value) {
+  STRING_PIECE extracted;
+  return extract_cpuinfo_field(&extracted, cpuinfo, field) &&
+         STRING_PIECE_equals(&extracted, value);
+}
+
+// has_list_item treats |list| as a space-separated list of items and returns
+// one if |item| is contained in |list| and zero otherwise.
+static int has_list_item(const STRING_PIECE *list, const char *item) {
+  STRING_PIECE remaining = *list, feature;
+  while (STRING_PIECE_get_delimited(&remaining, &feature, ' ')) {
+    if (STRING_PIECE_equals(&feature, item)) {
+      return 1;
+    }
+  }
+  return 0;
+}
+
+// crypto_get_arm_hwcap_from_cpuinfo returns an equivalent ARM |AT_HWCAP| value
+// from |cpuinfo|.
+static unsigned long crypto_get_arm_hwcap_from_cpuinfo(
+    const STRING_PIECE *cpuinfo) {
+  if (cpuinfo_field_equals(cpuinfo, "CPU architecture", "8")) {
+    // This is a 32-bit ARM binary running on a 64-bit kernel. NEON is always
+    // available on ARMv8. Linux omits required features, so reading the
+    // "Features" line does not work. (For simplicity, use strict equality. We
+    // assume everything running on future ARM architectures will have a
+    // working |getauxval|.)
+    return HWCAP_NEON;
+  }
+
+  STRING_PIECE features;
+  if (extract_cpuinfo_field(&features, cpuinfo, "Features") &&
+      has_list_item(&features, "neon")) {
+    return HWCAP_NEON;
+  }
+  return 0;
+}
+
+// crypto_get_arm_hwcap2_from_cpuinfo returns an equivalent ARM |AT_HWCAP2|
+// value from |cpuinfo|.
+static unsigned long crypto_get_arm_hwcap2_from_cpuinfo(
+    const STRING_PIECE *cpuinfo) {
+  STRING_PIECE features;
+  if (!extract_cpuinfo_field(&features, cpuinfo, "Features")) {
+    return 0;
+  }
+
+  unsigned long ret = 0;
+  if (has_list_item(&features, "aes")) {
+    ret |= HWCAP2_AES;
+  }
+  if (has_list_item(&features, "pmull")) {
+    ret |= HWCAP2_PMULL;
+  }
+  if (has_list_item(&features, "sha1")) {
+    ret |= HWCAP2_SHA1;
+  }
+  if (has_list_item(&features, "sha2")) {
+    ret |= HWCAP2_SHA2;
+  }
+  return ret;
+}
+
+// crypto_cpuinfo_has_broken_neon returns one if |cpuinfo| matches a CPU known
+// to have broken NEON unit and zero otherwise. See https://crbug.com/341598.
+static int crypto_cpuinfo_has_broken_neon(const STRING_PIECE *cpuinfo) {
+  return cpuinfo_field_equals(cpuinfo, "CPU implementer", "0x51") &&
+         cpuinfo_field_equals(cpuinfo, "CPU architecture", "7") &&
+         cpuinfo_field_equals(cpuinfo, "CPU variant", "0x1") &&
+         cpuinfo_field_equals(cpuinfo, "CPU part", "0x04d") &&
+         cpuinfo_field_equals(cpuinfo, "CPU revision", "0");
+}
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_CPU_ARM_LINUX_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c
new file mode 100644
index 0000000..256f757
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c	
@@ -0,0 +1,38 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/cpu.h>
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <openssl_grpc/arm_arch.h>
+
+
+extern uint32_t OPENSSL_armcap_P;
+
+char CRYPTO_is_NEON_capable_at_runtime(void) {
+  return (OPENSSL_armcap_P & ARMV7_NEON) != 0;
+}
+
+int CRYPTO_is_ARMv8_AES_capable(void) {
+  return (OPENSSL_armcap_P & ARMV8_AES) != 0;
+}
+
+int CRYPTO_is_ARMv8_PMULL_capable(void) {
+  return (OPENSSL_armcap_P & ARMV8_PMULL) != 0;
+}
+
+#endif  /* (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) &&
+           !defined(OPENSSL_STATIC_ARMCAP) */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c.grpc_back
new file mode 100644
index 0000000..ef395ea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-arm.c.grpc_back	
@@ -0,0 +1,38 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <openssl/arm_arch.h>
+
+
+extern uint32_t OPENSSL_armcap_P;
+
+char CRYPTO_is_NEON_capable_at_runtime(void) {
+  return (OPENSSL_armcap_P & ARMV7_NEON) != 0;
+}
+
+int CRYPTO_is_ARMv8_AES_capable(void) {
+  return (OPENSSL_armcap_P & ARMV8_AES) != 0;
+}
+
+int CRYPTO_is_ARMv8_PMULL_capable(void) {
+  return (OPENSSL_armcap_P & ARMV8_PMULL) != 0;
+}
+
+#endif  /* (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) &&
+           !defined(OPENSSL_STATIC_ARMCAP) */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c
new file mode 100644
index 0000000..6de8f19
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c	
@@ -0,0 +1,282 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cpu.h>
+
+
+#if !defined(OPENSSL_NO_ASM) && (defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <immintrin.h>
+#include <intrin.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+
+
+// OPENSSL_cpuid runs the cpuid instruction. |leaf| is passed in as EAX and ECX
+// is set to zero. It writes EAX, EBX, ECX, and EDX to |*out_eax| through
+// |*out_edx|.
+static void OPENSSL_cpuid(uint32_t *out_eax, uint32_t *out_ebx,
+                          uint32_t *out_ecx, uint32_t *out_edx, uint32_t leaf) {
+#if defined(_MSC_VER)
+  int tmp[4];
+  __cpuid(tmp, (int)leaf);
+  *out_eax = (uint32_t)tmp[0];
+  *out_ebx = (uint32_t)tmp[1];
+  *out_ecx = (uint32_t)tmp[2];
+  *out_edx = (uint32_t)tmp[3];
+#elif defined(__pic__) && defined(OPENSSL_32_BIT)
+  // Inline assembly may not clobber the PIC register. For 32-bit, this is EBX.
+  // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47602.
+  __asm__ volatile (
+    "xor %%ecx, %%ecx\n"
+    "mov %%ebx, %%edi\n"
+    "cpuid\n"
+    "xchg %%edi, %%ebx\n"
+    : "=a"(*out_eax), "=D"(*out_ebx), "=c"(*out_ecx), "=d"(*out_edx)
+    : "a"(leaf)
+  );
+#else
+  __asm__ volatile (
+    "xor %%ecx, %%ecx\n"
+    "cpuid\n"
+    : "=a"(*out_eax), "=b"(*out_ebx), "=c"(*out_ecx), "=d"(*out_edx)
+    : "a"(leaf)
+  );
+#endif
+}
+
+// OPENSSL_xgetbv returns the value of an Intel Extended Control Register (XCR).
+// Currently only XCR0 is defined by Intel so |xcr| should always be zero.
+static uint64_t OPENSSL_xgetbv(uint32_t xcr) {
+#if defined(_MSC_VER)
+  return (uint64_t)_xgetbv(xcr);
+#else
+  uint32_t eax, edx;
+  __asm__ volatile ("xgetbv" : "=a"(eax), "=d"(edx) : "c"(xcr));
+  return (((uint64_t)edx) << 32) | eax;
+#endif
+}
+
+// handle_cpu_env applies the value from |in| to the CPUID values in |out[0]|
+// and |out[1]|. See the comment in |OPENSSL_cpuid_setup| about this.
+static void handle_cpu_env(uint32_t *out, const char *in) {
+  const int invert = in[0] == '~';
+  const int hex = in[invert] == '0' && in[invert+1] == 'x';
+
+  int sscanf_result;
+  uint64_t v;
+  if (hex) {
+    sscanf_result = sscanf(in + invert + 2, "%" PRIx64, &v);
+  } else {
+    sscanf_result = sscanf(in + invert, "%" PRIu64, &v);
+  }
+
+  if (!sscanf_result) {
+    return;
+  }
+
+  if (invert) {
+    out[0] &= ~v;
+    out[1] &= ~(v >> 32);
+  } else {
+    out[0] = v;
+    out[1] = v >> 32;
+  }
+}
+
+void OPENSSL_cpuid_setup(void) {
+  // Determine the vendor and maximum input value.
+  uint32_t eax, ebx, ecx, edx;
+  OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 0);
+
+  uint32_t num_ids = eax;
+
+  int is_intel = ebx == 0x756e6547 /* Genu */ &&
+                 edx == 0x49656e69 /* ineI */ &&
+                 ecx == 0x6c65746e /* ntel */;
+  int is_amd = ebx == 0x68747541 /* Auth */ &&
+               edx == 0x69746e65 /* enti */ &&
+               ecx == 0x444d4163 /* cAMD */;
+
+  uint32_t extended_features[2] = {0};
+  if (num_ids >= 7) {
+    OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 7);
+    extended_features[0] = ebx;
+    extended_features[1] = ecx;
+  }
+
+  OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 1);
+
+  if (is_amd) {
+    // See https://www.amd.com/system/files/TechDocs/25481.pdf, page 10.
+    const uint32_t base_family = (eax >> 8) & 15;
+    const uint32_t base_model = (eax >> 4) & 15;
+
+    uint32_t family = base_family;
+    uint32_t model = base_model;
+    if (base_family == 0xf) {
+      const uint32_t ext_family = (eax >> 20) & 255;
+      family += ext_family;
+      const uint32_t ext_model = (eax >> 16) & 15;
+      model |= ext_model << 4;
+    }
+
+    if (family < 0x17 || (family == 0x17 && 0x70 <= model && model <= 0x7f)) {
+      // Disable RDRAND on AMD families before 0x17 (Zen) due to reported
+      // failures after suspend.
+      // https://bugzilla.redhat.com/show_bug.cgi?id=1150286
+      // Also disable for family 0x17, models 0x70–0x7f, due to possible RDRAND
+      // failures there too.
+      ecx &= ~(1u << 30);
+    }
+  }
+
+  // Force the hyper-threading bit so that the more conservative path is always
+  // chosen.
+  edx |= 1u << 28;
+
+  // Reserved bit #20 was historically repurposed to control the in-memory
+  // representation of RC4 state. Always set it to zero.
+  edx &= ~(1u << 20);
+
+  // Reserved bit #30 is repurposed to signal an Intel CPU.
+  if (is_intel) {
+    edx |= (1u << 30);
+
+    // Clear the XSAVE bit on Knights Landing to mimic Silvermont. This enables
+    // some Silvermont-specific codepaths which perform better. See OpenSSL
+    // commit 64d92d74985ebb3d0be58a9718f9e080a14a8e7f.
+    if ((eax & 0x0fff0ff0) == 0x00050670 /* Knights Landing */ ||
+        (eax & 0x0fff0ff0) == 0x00080650 /* Knights Mill (per SDE) */) {
+      ecx &= ~(1u << 26);
+    }
+  } else {
+    edx &= ~(1u << 30);
+  }
+
+  // The SDBG bit is repurposed to denote AMD XOP support. Don't ever use AMD
+  // XOP code paths.
+  ecx &= ~(1u << 11);
+
+  uint64_t xcr0 = 0;
+  if (ecx & (1u << 27)) {
+    // XCR0 may only be queried if the OSXSAVE bit is set.
+    xcr0 = OPENSSL_xgetbv(0);
+  }
+  // See Intel manual, volume 1, section 14.3.
+  if ((xcr0 & 6) != 6) {
+    // YMM registers cannot be used.
+    ecx &= ~(1u << 28);  // AVX
+    ecx &= ~(1u << 12);  // FMA
+    ecx &= ~(1u << 11);  // AMD XOP
+    // Clear AVX2 and AVX512* bits.
+    //
+    // TODO(davidben): Should bits 17 and 26-28 also be cleared? Upstream
+    // doesn't clear those.
+    extended_features[0] &=
+        ~((1u << 5) | (1u << 16) | (1u << 21) | (1u << 30) | (1u << 31));
+  }
+  // See Intel manual, volume 1, section 15.2.
+  if ((xcr0 & 0xe6) != 0xe6) {
+    // Clear AVX512F. Note we don't touch other AVX512 extensions because they
+    // can be used with YMM.
+    extended_features[0] &= ~(1u << 16);
+  }
+
+  // Disable ADX instructions on Knights Landing. See OpenSSL commit
+  // 64d92d74985ebb3d0be58a9718f9e080a14a8e7f.
+  if ((ecx & (1u << 26)) == 0) {
+    extended_features[0] &= ~(1u << 19);
+  }
+
+  OPENSSL_ia32cap_P[0] = edx;
+  OPENSSL_ia32cap_P[1] = ecx;
+  OPENSSL_ia32cap_P[2] = extended_features[0];
+  OPENSSL_ia32cap_P[3] = extended_features[1];
+
+  const char *env1, *env2;
+  env1 = getenv("OPENSSL_ia32cap");
+  if (env1 == NULL) {
+    return;
+  }
+
+  // OPENSSL_ia32cap can contain zero, one or two values, separated with a ':'.
+  // Each value is a 64-bit, unsigned value which may start with "0x" to
+  // indicate a hex value. Prior to the 64-bit value, a '~' may be given.
+  //
+  // If '~' isn't present, then the value is taken as the result of the CPUID.
+  // Otherwise the value is inverted and ANDed with the probed CPUID result.
+  //
+  // The first value determines OPENSSL_ia32cap_P[0] and [1]. The second [2]
+  // and [3].
+
+  handle_cpu_env(&OPENSSL_ia32cap_P[0], env1);
+  env2 = strchr(env1, ':');
+  if (env2 != NULL) {
+    handle_cpu_env(&OPENSSL_ia32cap_P[2], env2 + 1);
+  }
+}
+
+#endif  // !OPENSSL_NO_ASM && (OPENSSL_X86 || OPENSSL_X86_64)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c.grpc_back
new file mode 100644
index 0000000..cc41fc4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-intel.c.grpc_back	
@@ -0,0 +1,282 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cpu.h>
+
+
+#if !defined(OPENSSL_NO_ASM) && (defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <immintrin.h>
+#include <intrin.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+
+
+// OPENSSL_cpuid runs the cpuid instruction. |leaf| is passed in as EAX and ECX
+// is set to zero. It writes EAX, EBX, ECX, and EDX to |*out_eax| through
+// |*out_edx|.
+static void OPENSSL_cpuid(uint32_t *out_eax, uint32_t *out_ebx,
+                          uint32_t *out_ecx, uint32_t *out_edx, uint32_t leaf) {
+#if defined(_MSC_VER)
+  int tmp[4];
+  __cpuid(tmp, (int)leaf);
+  *out_eax = (uint32_t)tmp[0];
+  *out_ebx = (uint32_t)tmp[1];
+  *out_ecx = (uint32_t)tmp[2];
+  *out_edx = (uint32_t)tmp[3];
+#elif defined(__pic__) && defined(OPENSSL_32_BIT)
+  // Inline assembly may not clobber the PIC register. For 32-bit, this is EBX.
+  // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47602.
+  __asm__ volatile (
+    "xor %%ecx, %%ecx\n"
+    "mov %%ebx, %%edi\n"
+    "cpuid\n"
+    "xchg %%edi, %%ebx\n"
+    : "=a"(*out_eax), "=D"(*out_ebx), "=c"(*out_ecx), "=d"(*out_edx)
+    : "a"(leaf)
+  );
+#else
+  __asm__ volatile (
+    "xor %%ecx, %%ecx\n"
+    "cpuid\n"
+    : "=a"(*out_eax), "=b"(*out_ebx), "=c"(*out_ecx), "=d"(*out_edx)
+    : "a"(leaf)
+  );
+#endif
+}
+
+// OPENSSL_xgetbv returns the value of an Intel Extended Control Register (XCR).
+// Currently only XCR0 is defined by Intel so |xcr| should always be zero.
+static uint64_t OPENSSL_xgetbv(uint32_t xcr) {
+#if defined(_MSC_VER)
+  return (uint64_t)_xgetbv(xcr);
+#else
+  uint32_t eax, edx;
+  __asm__ volatile ("xgetbv" : "=a"(eax), "=d"(edx) : "c"(xcr));
+  return (((uint64_t)edx) << 32) | eax;
+#endif
+}
+
+// handle_cpu_env applies the value from |in| to the CPUID values in |out[0]|
+// and |out[1]|. See the comment in |OPENSSL_cpuid_setup| about this.
+static void handle_cpu_env(uint32_t *out, const char *in) {
+  const int invert = in[0] == '~';
+  const int hex = in[invert] == '0' && in[invert+1] == 'x';
+
+  int sscanf_result;
+  uint64_t v;
+  if (hex) {
+    sscanf_result = sscanf(in + invert + 2, "%" PRIx64, &v);
+  } else {
+    sscanf_result = sscanf(in + invert, "%" PRIu64, &v);
+  }
+
+  if (!sscanf_result) {
+    return;
+  }
+
+  if (invert) {
+    out[0] &= ~v;
+    out[1] &= ~(v >> 32);
+  } else {
+    out[0] = v;
+    out[1] = v >> 32;
+  }
+}
+
+void OPENSSL_cpuid_setup(void) {
+  // Determine the vendor and maximum input value.
+  uint32_t eax, ebx, ecx, edx;
+  OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 0);
+
+  uint32_t num_ids = eax;
+
+  int is_intel = ebx == 0x756e6547 /* Genu */ &&
+                 edx == 0x49656e69 /* ineI */ &&
+                 ecx == 0x6c65746e /* ntel */;
+  int is_amd = ebx == 0x68747541 /* Auth */ &&
+               edx == 0x69746e65 /* enti */ &&
+               ecx == 0x444d4163 /* cAMD */;
+
+  uint32_t extended_features[2] = {0};
+  if (num_ids >= 7) {
+    OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 7);
+    extended_features[0] = ebx;
+    extended_features[1] = ecx;
+  }
+
+  OPENSSL_cpuid(&eax, &ebx, &ecx, &edx, 1);
+
+  if (is_amd) {
+    // See https://www.amd.com/system/files/TechDocs/25481.pdf, page 10.
+    const uint32_t base_family = (eax >> 8) & 15;
+    const uint32_t base_model = (eax >> 4) & 15;
+
+    uint32_t family = base_family;
+    uint32_t model = base_model;
+    if (base_family == 0xf) {
+      const uint32_t ext_family = (eax >> 20) & 255;
+      family += ext_family;
+      const uint32_t ext_model = (eax >> 16) & 15;
+      model |= ext_model << 4;
+    }
+
+    if (family < 0x17 || (family == 0x17 && 0x70 <= model && model <= 0x7f)) {
+      // Disable RDRAND on AMD families before 0x17 (Zen) due to reported
+      // failures after suspend.
+      // https://bugzilla.redhat.com/show_bug.cgi?id=1150286
+      // Also disable for family 0x17, models 0x70–0x7f, due to possible RDRAND
+      // failures there too.
+      ecx &= ~(1u << 30);
+    }
+  }
+
+  // Force the hyper-threading bit so that the more conservative path is always
+  // chosen.
+  edx |= 1u << 28;
+
+  // Reserved bit #20 was historically repurposed to control the in-memory
+  // representation of RC4 state. Always set it to zero.
+  edx &= ~(1u << 20);
+
+  // Reserved bit #30 is repurposed to signal an Intel CPU.
+  if (is_intel) {
+    edx |= (1u << 30);
+
+    // Clear the XSAVE bit on Knights Landing to mimic Silvermont. This enables
+    // some Silvermont-specific codepaths which perform better. See OpenSSL
+    // commit 64d92d74985ebb3d0be58a9718f9e080a14a8e7f.
+    if ((eax & 0x0fff0ff0) == 0x00050670 /* Knights Landing */ ||
+        (eax & 0x0fff0ff0) == 0x00080650 /* Knights Mill (per SDE) */) {
+      ecx &= ~(1u << 26);
+    }
+  } else {
+    edx &= ~(1u << 30);
+  }
+
+  // The SDBG bit is repurposed to denote AMD XOP support. Don't ever use AMD
+  // XOP code paths.
+  ecx &= ~(1u << 11);
+
+  uint64_t xcr0 = 0;
+  if (ecx & (1u << 27)) {
+    // XCR0 may only be queried if the OSXSAVE bit is set.
+    xcr0 = OPENSSL_xgetbv(0);
+  }
+  // See Intel manual, volume 1, section 14.3.
+  if ((xcr0 & 6) != 6) {
+    // YMM registers cannot be used.
+    ecx &= ~(1u << 28);  // AVX
+    ecx &= ~(1u << 12);  // FMA
+    ecx &= ~(1u << 11);  // AMD XOP
+    // Clear AVX2 and AVX512* bits.
+    //
+    // TODO(davidben): Should bits 17 and 26-28 also be cleared? Upstream
+    // doesn't clear those.
+    extended_features[0] &=
+        ~((1u << 5) | (1u << 16) | (1u << 21) | (1u << 30) | (1u << 31));
+  }
+  // See Intel manual, volume 1, section 15.2.
+  if ((xcr0 & 0xe6) != 0xe6) {
+    // Clear AVX512F. Note we don't touch other AVX512 extensions because they
+    // can be used with YMM.
+    extended_features[0] &= ~(1u << 16);
+  }
+
+  // Disable ADX instructions on Knights Landing. See OpenSSL commit
+  // 64d92d74985ebb3d0be58a9718f9e080a14a8e7f.
+  if ((ecx & (1u << 26)) == 0) {
+    extended_features[0] &= ~(1u << 19);
+  }
+
+  OPENSSL_ia32cap_P[0] = edx;
+  OPENSSL_ia32cap_P[1] = ecx;
+  OPENSSL_ia32cap_P[2] = extended_features[0];
+  OPENSSL_ia32cap_P[3] = extended_features[1];
+
+  const char *env1, *env2;
+  env1 = getenv("OPENSSL_ia32cap");
+  if (env1 == NULL) {
+    return;
+  }
+
+  // OPENSSL_ia32cap can contain zero, one or two values, separated with a ':'.
+  // Each value is a 64-bit, unsigned value which may start with "0x" to
+  // indicate a hex value. Prior to the 64-bit value, a '~' may be given.
+  //
+  // If '~' isn't present, then the value is taken as the result of the CPUID.
+  // Otherwise the value is inverted and ANDed with the probed CPUID result.
+  //
+  // The first value determines OPENSSL_ia32cap_P[0] and [1]. The second [2]
+  // and [3].
+
+  handle_cpu_env(&OPENSSL_ia32cap_P[0], env1);
+  env2 = strchr(env1, ':');
+  if (env2 != NULL) {
+    handle_cpu_env(&OPENSSL_ia32cap_P[2], env2 + 1);
+  }
+}
+
+#endif  // !OPENSSL_NO_ASM && (OPENSSL_X86 || OPENSSL_X86_64)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c
new file mode 100644
index 0000000..eee8ff8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c	
@@ -0,0 +1,38 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/cpu.h>
+
+#if defined(OPENSSL_PPC64LE)
+
+#include <sys/auxv.h>
+
+#include "internal.h"
+
+
+#if !defined(PPC_FEATURE2_HAS_VCRYPTO)
+// PPC_FEATURE2_HAS_VCRYPTO was taken from section 4.1.2.3 of the “OpenPOWER
+// ABI for Linux Supplement”.
+#define PPC_FEATURE2_HAS_VCRYPTO 0x02000000
+#endif
+
+void OPENSSL_cpuid_setup(void) {
+  OPENSSL_ppc64le_hwcap2 = getauxval(AT_HWCAP2);
+}
+
+int CRYPTO_is_PPC64LE_vcrypto_capable(void) {
+  return (OPENSSL_ppc64le_hwcap2 & PPC_FEATURE2_HAS_VCRYPTO) != 0;
+}
+
+#endif  // OPENSSL_PPC64LE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c.grpc_back
new file mode 100644
index 0000000..6cc8aee
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/cpu-ppc64le.c.grpc_back	
@@ -0,0 +1,38 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if defined(OPENSSL_PPC64LE)
+
+#include <sys/auxv.h>
+
+#include "internal.h"
+
+
+#if !defined(PPC_FEATURE2_HAS_VCRYPTO)
+// PPC_FEATURE2_HAS_VCRYPTO was taken from section 4.1.2.3 of the “OpenPOWER
+// ABI for Linux Supplement”.
+#define PPC_FEATURE2_HAS_VCRYPTO 0x02000000
+#endif
+
+void OPENSSL_cpuid_setup(void) {
+  OPENSSL_ppc64le_hwcap2 = getauxval(AT_HWCAP2);
+}
+
+int CRYPTO_is_PPC64LE_vcrypto_capable(void) {
+  return (OPENSSL_ppc64le_hwcap2 & PPC_FEATURE2_HAS_VCRYPTO) != 0;
+}
+
+#endif  // OPENSSL_PPC64LE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c
new file mode 100644
index 0000000..f289881
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c	
@@ -0,0 +1,215 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/crypto.h>
+
+#include <openssl_grpc/cpu.h>
+
+#include "internal.h"
+
+
+#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_STATIC_ARMCAP) && \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) || \
+     defined(OPENSSL_PPC64LE))
+// x86, x86_64, the ARMs and ppc64le need to record the result of a
+// cpuid/getauxval call for the asm to work correctly, unless compiled without
+// asm code.
+#define NEED_CPUID
+
+#else
+
+// Otherwise, don't emit a static initialiser.
+
+#if !defined(BORINGSSL_NO_STATIC_INITIALIZER)
+#define BORINGSSL_NO_STATIC_INITIALIZER
+#endif
+
+#endif  // !NO_ASM && !STATIC_ARMCAP &&
+        // (X86 || X86_64 || ARM || AARCH64 || PPC64LE)
+
+
+// Our assembly does not use the GOT to reference symbols, which means
+// references to visible symbols will often require a TEXTREL. This is
+// undesirable, so all assembly-referenced symbols should be hidden. CPU
+// capabilities are the only such symbols defined in C. Explicitly hide them,
+// rather than rely on being built with -fvisibility=hidden.
+#if defined(OPENSSL_WINDOWS)
+#define HIDDEN
+#else
+#define HIDDEN __attribute__((visibility("hidden")))
+#endif
+
+
+// The capability variables are defined in this file in order to work around a
+// linker bug. When linking with a .a, if no symbols in a .o are referenced
+// then the .o is discarded, even if it has constructor functions.
+//
+// This still means that any binaries that don't include some functionality
+// that tests the capability values will still skip the constructor but, so
+// far, the init constructor function only sets the capability variables.
+
+#if defined(BORINGSSL_DISPATCH_TEST)
+// This value must be explicitly initialised to zero in order to work around a
+// bug in libtool or the linker on OS X.
+//
+// If not initialised then it becomes a "common symbol". When put into an
+// archive, linking on OS X will fail to resolve common symbols. By
+// initialising it to zero, it becomes a "data symbol", which isn't so
+// affected.
+HIDDEN uint8_t BORINGSSL_function_hit[7] = {0};
+#endif
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+
+// This value must be explicitly initialized to zero. See similar comment above.
+HIDDEN uint32_t OPENSSL_ia32cap_P[4] = {0};
+
+#elif defined(OPENSSL_PPC64LE)
+
+HIDDEN unsigned long OPENSSL_ppc64le_hwcap2 = 0;
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#include <openssl_grpc/arm_arch.h>
+
+#if defined(OPENSSL_STATIC_ARMCAP)
+
+HIDDEN uint32_t OPENSSL_armcap_P =
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+    ARMV7_NEON |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_AES |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_SHA1) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_SHA1 |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_SHA256) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_SHA256 |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_PMULL |
+#endif
+    0;
+
+#else
+HIDDEN uint32_t OPENSSL_armcap_P = 0;
+
+uint32_t *OPENSSL_get_armcap_pointer_for_test(void) {
+  return &OPENSSL_armcap_P;
+}
+#endif
+
+#endif
+
+#if defined(BORINGSSL_FIPS)
+// In FIPS mode, the power-on self-test function calls |CRYPTO_library_init|
+// because we have to ensure that CPUID detection occurs first.
+#define BORINGSSL_NO_STATIC_INITIALIZER
+#endif
+
+#if defined(OPENSSL_WINDOWS) && !defined(BORINGSSL_NO_STATIC_INITIALIZER)
+#define OPENSSL_CDECL __cdecl
+#else
+#define OPENSSL_CDECL
+#endif
+
+#if defined(BORINGSSL_NO_STATIC_INITIALIZER)
+static CRYPTO_once_t once = CRYPTO_ONCE_INIT;
+#elif defined(_MSC_VER)
+#pragma section(".CRT$XCU", read)
+static void __cdecl do_library_init(void);
+__declspec(allocate(".CRT$XCU")) void(*library_init_constructor)(void) =
+    do_library_init;
+#else
+static void do_library_init(void) __attribute__ ((constructor));
+#endif
+
+// do_library_init is the actual initialization function. If
+// BORINGSSL_NO_STATIC_INITIALIZER isn't defined, this is set as a static
+// initializer. Otherwise, it is called by CRYPTO_library_init.
+static void OPENSSL_CDECL do_library_init(void) {
+ // WARNING: this function may only configure the capability variables. See the
+ // note above about the linker bug.
+#if defined(NEED_CPUID)
+  OPENSSL_cpuid_setup();
+#endif
+}
+
+void CRYPTO_library_init(void) {
+  // TODO(davidben): It would be tidier if this build knob could be replaced
+  // with an internal lazy-init mechanism that would handle things correctly
+  // in-library. https://crbug.com/542879
+#if defined(BORINGSSL_NO_STATIC_INITIALIZER)
+  CRYPTO_once(&once, do_library_init);
+#endif
+}
+
+int CRYPTO_is_confidential_build(void) {
+#if defined(BORINGSSL_CONFIDENTIAL)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+int CRYPTO_has_asm(void) {
+#if defined(OPENSSL_NO_ASM)
+  return 0;
+#else
+  return 1;
+#endif
+}
+
+const char *SSLeay_version(int which) { return OpenSSL_version(which); }
+
+const char *OpenSSL_version(int which) {
+  switch (which) {
+    case OPENSSL_VERSION:
+      return "BoringSSL";
+    case OPENSSL_CFLAGS:
+      return "compiler: n/a";
+    case OPENSSL_BUILT_ON:
+      return "built on: n/a";
+    case OPENSSL_PLATFORM:
+      return "platform: n/a";
+    case OPENSSL_DIR:
+      return "OPENSSLDIR: n/a";
+    default:
+      return "not available";
+  }
+}
+
+unsigned long SSLeay(void) { return OPENSSL_VERSION_NUMBER; }
+
+unsigned long OpenSSL_version_num(void) { return OPENSSL_VERSION_NUMBER; }
+
+int CRYPTO_malloc_init(void) { return 1; }
+
+int OPENSSL_malloc_init(void) { return 1; }
+
+void ENGINE_load_builtin_engines(void) {}
+
+int ENGINE_register_all_complete(void) { return 1; }
+
+void OPENSSL_load_builtin_modules(void) {}
+
+int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+void OPENSSL_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c.grpc_back
new file mode 100644
index 0000000..297240e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/crypto.c.grpc_back	
@@ -0,0 +1,215 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/crypto.h>
+
+#include <openssl/cpu.h>
+
+#include "internal.h"
+
+
+#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_STATIC_ARMCAP) && \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) || \
+     defined(OPENSSL_PPC64LE))
+// x86, x86_64, the ARMs and ppc64le need to record the result of a
+// cpuid/getauxval call for the asm to work correctly, unless compiled without
+// asm code.
+#define NEED_CPUID
+
+#else
+
+// Otherwise, don't emit a static initialiser.
+
+#if !defined(BORINGSSL_NO_STATIC_INITIALIZER)
+#define BORINGSSL_NO_STATIC_INITIALIZER
+#endif
+
+#endif  // !NO_ASM && !STATIC_ARMCAP &&
+        // (X86 || X86_64 || ARM || AARCH64 || PPC64LE)
+
+
+// Our assembly does not use the GOT to reference symbols, which means
+// references to visible symbols will often require a TEXTREL. This is
+// undesirable, so all assembly-referenced symbols should be hidden. CPU
+// capabilities are the only such symbols defined in C. Explicitly hide them,
+// rather than rely on being built with -fvisibility=hidden.
+#if defined(OPENSSL_WINDOWS)
+#define HIDDEN
+#else
+#define HIDDEN __attribute__((visibility("hidden")))
+#endif
+
+
+// The capability variables are defined in this file in order to work around a
+// linker bug. When linking with a .a, if no symbols in a .o are referenced
+// then the .o is discarded, even if it has constructor functions.
+//
+// This still means that any binaries that don't include some functionality
+// that tests the capability values will still skip the constructor but, so
+// far, the init constructor function only sets the capability variables.
+
+#if defined(BORINGSSL_DISPATCH_TEST)
+// This value must be explicitly initialised to zero in order to work around a
+// bug in libtool or the linker on OS X.
+//
+// If not initialised then it becomes a "common symbol". When put into an
+// archive, linking on OS X will fail to resolve common symbols. By
+// initialising it to zero, it becomes a "data symbol", which isn't so
+// affected.
+HIDDEN uint8_t BORINGSSL_function_hit[7] = {0};
+#endif
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+
+// This value must be explicitly initialized to zero. See similar comment above.
+HIDDEN uint32_t OPENSSL_ia32cap_P[4] = {0};
+
+#elif defined(OPENSSL_PPC64LE)
+
+HIDDEN unsigned long OPENSSL_ppc64le_hwcap2 = 0;
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#include <openssl/arm_arch.h>
+
+#if defined(OPENSSL_STATIC_ARMCAP)
+
+HIDDEN uint32_t OPENSSL_armcap_P =
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+    ARMV7_NEON |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_AES |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_SHA1) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_SHA1 |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_SHA256) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_SHA256 |
+#endif
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+    ARMV8_PMULL |
+#endif
+    0;
+
+#else
+HIDDEN uint32_t OPENSSL_armcap_P = 0;
+
+uint32_t *OPENSSL_get_armcap_pointer_for_test(void) {
+  return &OPENSSL_armcap_P;
+}
+#endif
+
+#endif
+
+#if defined(BORINGSSL_FIPS)
+// In FIPS mode, the power-on self-test function calls |CRYPTO_library_init|
+// because we have to ensure that CPUID detection occurs first.
+#define BORINGSSL_NO_STATIC_INITIALIZER
+#endif
+
+#if defined(OPENSSL_WINDOWS) && !defined(BORINGSSL_NO_STATIC_INITIALIZER)
+#define OPENSSL_CDECL __cdecl
+#else
+#define OPENSSL_CDECL
+#endif
+
+#if defined(BORINGSSL_NO_STATIC_INITIALIZER)
+static CRYPTO_once_t once = CRYPTO_ONCE_INIT;
+#elif defined(_MSC_VER)
+#pragma section(".CRT$XCU", read)
+static void __cdecl do_library_init(void);
+__declspec(allocate(".CRT$XCU")) void(*library_init_constructor)(void) =
+    do_library_init;
+#else
+static void do_library_init(void) __attribute__ ((constructor));
+#endif
+
+// do_library_init is the actual initialization function. If
+// BORINGSSL_NO_STATIC_INITIALIZER isn't defined, this is set as a static
+// initializer. Otherwise, it is called by CRYPTO_library_init.
+static void OPENSSL_CDECL do_library_init(void) {
+ // WARNING: this function may only configure the capability variables. See the
+ // note above about the linker bug.
+#if defined(NEED_CPUID)
+  OPENSSL_cpuid_setup();
+#endif
+}
+
+void CRYPTO_library_init(void) {
+  // TODO(davidben): It would be tidier if this build knob could be replaced
+  // with an internal lazy-init mechanism that would handle things correctly
+  // in-library. https://crbug.com/542879
+#if defined(BORINGSSL_NO_STATIC_INITIALIZER)
+  CRYPTO_once(&once, do_library_init);
+#endif
+}
+
+int CRYPTO_is_confidential_build(void) {
+#if defined(BORINGSSL_CONFIDENTIAL)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+int CRYPTO_has_asm(void) {
+#if defined(OPENSSL_NO_ASM)
+  return 0;
+#else
+  return 1;
+#endif
+}
+
+const char *SSLeay_version(int which) { return OpenSSL_version(which); }
+
+const char *OpenSSL_version(int which) {
+  switch (which) {
+    case OPENSSL_VERSION:
+      return "BoringSSL";
+    case OPENSSL_CFLAGS:
+      return "compiler: n/a";
+    case OPENSSL_BUILT_ON:
+      return "built on: n/a";
+    case OPENSSL_PLATFORM:
+      return "platform: n/a";
+    case OPENSSL_DIR:
+      return "OPENSSLDIR: n/a";
+    default:
+      return "not available";
+  }
+}
+
+unsigned long SSLeay(void) { return OPENSSL_VERSION_NUMBER; }
+
+unsigned long OpenSSL_version_num(void) { return OPENSSL_VERSION_NUMBER; }
+
+int CRYPTO_malloc_init(void) { return 1; }
+
+int OPENSSL_malloc_init(void) { return 1; }
+
+void ENGINE_load_builtin_engines(void) {}
+
+int ENGINE_register_all_complete(void) { return 1; }
+
+void OPENSSL_load_builtin_modules(void) {}
+
+int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+void OPENSSL_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c
new file mode 100644
index 0000000..dc71519
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c	
@@ -0,0 +1,539 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/curve25519.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+
+#include "../internal.h"
+#include "../../third_party/fiat/internal.h"
+
+
+// The following precomputation tables are for the following
+// points used in the SPAKE2 protocol.
+//
+// N:
+//   x: 49918732221787544735331783592030787422991506689877079631459872391322455579424
+//   y: 54629554431565467720832445949441049581317094546788069926228343916274969994000
+//   encoded: 10e3df0ae37d8e7a99b5fe74b44672103dbddcbd06af680d71329a11693bc778
+//
+// M:
+//   x: 31406539342727633121250288103050113562375374900226415211311216773867585644232
+//   y: 21177308356423958466833845032658859666296341766942662650232962324899758529114
+//   encoded: 5ada7e4bf6ddd9adb6626d32131c6b5c51a1e347a3478f53cfcf441b88eed12e
+//
+// These points and their precomputation tables are generated with the
+// following Python code. For a description of the precomputation table,
+// see curve25519.c in this directory.
+//
+// Exact copies of the source code are kept in bug 27296743.
+
+/*
+import hashlib
+import ed25519 as E  # http://ed25519.cr.yp.to/python/ed25519.py
+
+SEED_N = 'edwards25519 point generation seed (N)'
+SEED_M = 'edwards25519 point generation seed (M)'
+
+def genpoint(seed):
+    v = hashlib.sha256(seed).digest()
+    it = 1
+    while True:
+        try:
+            x,y = E.decodepoint(v)
+        except Exception, e:
+            print e
+            it += 1
+            v = hashlib.sha256(v).digest()
+            continue
+        print "Found in %d iterations:" % it
+        print "  x = %d" % x
+        print "  y = %d" % y
+        print " Encoded (hex)"
+        print E.encodepoint((x,y)).encode('hex')
+        return (x,y)
+
+def gentable(P):
+    t = []
+    for i in range(1,16):
+        k = ((i >> 3 & 1) * (1 << 192) +
+             (i >> 2 & 1) * (1 << 128) +
+             (i >> 1 & 1) * (1 <<  64) +
+             (i      & 1))
+        t.append(E.scalarmult(P, k))
+    return ''.join(E.encodeint(x) + E.encodeint(y) for (x,y) in t)
+
+def printtable(table, name):
+    print "static const uint8_t %s[15 * 2 * 32] = {" % name,
+    for i in range(15 * 2 * 32):
+        if i % 12 == 0:
+            print "\n   ",
+        print " 0x%02x," % ord(table[i]),
+    print "\n};"
+
+if __name__ == "__main__":
+    print "Searching for N"
+    N = genpoint(SEED_N)
+    print "Generating precomputation table for N"
+    Ntable = gentable(N)
+    printtable(Ntable, "kSpakeNSmallPrecomp")
+
+    print "Searching for M"
+    M = genpoint(SEED_M)
+    print "Generating precomputation table for M"
+    Mtable = gentable(M)
+    printtable(Mtable, "kSpakeMSmallPrecomp")
+*/
+
+static const uint8_t kSpakeNSmallPrecomp[15 * 2 * 32] = {
+    0x20, 0x1b, 0xc5, 0xb3, 0x43, 0x17, 0x71, 0x10, 0x44, 0x1e, 0x73, 0xb3,
+    0xae, 0x3f, 0xbf, 0x9f, 0xf5, 0x44, 0xc8, 0x13, 0x8f, 0xd1, 0x01, 0xc2,
+    0x8a, 0x1a, 0x6d, 0xea, 0x4d, 0x00, 0x5d, 0x6e, 0x10, 0xe3, 0xdf, 0x0a,
+    0xe3, 0x7d, 0x8e, 0x7a, 0x99, 0xb5, 0xfe, 0x74, 0xb4, 0x46, 0x72, 0x10,
+    0x3d, 0xbd, 0xdc, 0xbd, 0x06, 0xaf, 0x68, 0x0d, 0x71, 0x32, 0x9a, 0x11,
+    0x69, 0x3b, 0xc7, 0x78, 0x93, 0xf1, 0x57, 0x97, 0x6e, 0xf0, 0x6e, 0x45,
+    0x37, 0x4a, 0xf4, 0x0b, 0x18, 0x51, 0xf5, 0x4f, 0x67, 0x3c, 0xdc, 0xec,
+    0x84, 0xed, 0xd0, 0xeb, 0xca, 0xfb, 0xdb, 0xff, 0x7f, 0xeb, 0xa8, 0x23,
+    0x68, 0x87, 0x13, 0x64, 0x6a, 0x10, 0xf7, 0x45, 0xe0, 0x0f, 0x32, 0x21,
+    0x59, 0x7c, 0x0e, 0x50, 0xad, 0x56, 0xd7, 0x12, 0x69, 0x7b, 0x58, 0xf8,
+    0xb9, 0x3b, 0xa5, 0xbb, 0x4d, 0x1b, 0x87, 0x1c, 0x46, 0xa7, 0x17, 0x9d,
+    0x6d, 0x84, 0x45, 0xbe, 0x7f, 0x95, 0xd2, 0x34, 0xcd, 0x89, 0x95, 0xc0,
+    0xf0, 0xd3, 0xdf, 0x6e, 0x10, 0x4a, 0xe3, 0x7b, 0xce, 0x7f, 0x40, 0x27,
+    0xc7, 0x2b, 0xab, 0x66, 0x03, 0x59, 0xb4, 0x7b, 0xc7, 0xc7, 0xf0, 0x39,
+    0x9a, 0x33, 0x35, 0xbf, 0xcc, 0x2f, 0xf3, 0x2e, 0x68, 0x9d, 0x53, 0x5c,
+    0x88, 0x52, 0xe3, 0x77, 0x90, 0xa1, 0x27, 0x85, 0xc5, 0x74, 0x7f, 0x23,
+    0x0e, 0x93, 0x01, 0x3e, 0xe7, 0x2e, 0x2e, 0x95, 0xf3, 0x0d, 0xc2, 0x25,
+    0x25, 0x39, 0x39, 0x3d, 0x6e, 0x8e, 0x89, 0xbd, 0xe8, 0xbb, 0x67, 0x5e,
+    0x8c, 0x66, 0x8b, 0x63, 0x28, 0x1e, 0x4e, 0x74, 0x85, 0xa8, 0xaf, 0x0f,
+    0x12, 0x5d, 0xb6, 0x8a, 0x83, 0x1a, 0x77, 0x76, 0x5e, 0x62, 0x8a, 0xa7,
+    0x3c, 0xb8, 0x05, 0x57, 0x2b, 0xaf, 0x36, 0x2e, 0x10, 0x90, 0xb2, 0x39,
+    0xb4, 0x3e, 0x75, 0x6d, 0x3a, 0xa8, 0x31, 0x35, 0xc2, 0x1e, 0x8f, 0xc2,
+    0x79, 0x89, 0x35, 0x16, 0x26, 0xd1, 0xc7, 0x0b, 0x04, 0x1f, 0x1d, 0xf9,
+    0x9c, 0x05, 0xa6, 0x6b, 0xb5, 0x19, 0x5a, 0x24, 0x6d, 0x91, 0xc5, 0x31,
+    0xfd, 0xc5, 0xfa, 0xe7, 0xa6, 0xcb, 0x0e, 0x4b, 0x18, 0x0d, 0x94, 0xc7,
+    0xee, 0x1d, 0x46, 0x1f, 0x92, 0xb1, 0xb2, 0x4a, 0x2b, 0x43, 0x37, 0xfe,
+    0xc2, 0x15, 0x11, 0x89, 0xef, 0x59, 0x73, 0x3c, 0x06, 0x76, 0x78, 0xcb,
+    0xa6, 0x0d, 0x79, 0x5f, 0x28, 0x0b, 0x5b, 0x8c, 0x9e, 0xe4, 0xaa, 0x51,
+    0x9a, 0x42, 0x6f, 0x11, 0x50, 0x3d, 0x01, 0xd6, 0x21, 0xc0, 0x99, 0x5e,
+    0x1a, 0xe8, 0x81, 0x25, 0x80, 0xeb, 0xed, 0x5d, 0x37, 0x47, 0x30, 0x70,
+    0xa0, 0x4e, 0x0b, 0x43, 0x17, 0xbe, 0xb6, 0x47, 0xe7, 0x2a, 0x62, 0x9d,
+    0x5d, 0xa6, 0xc5, 0x33, 0x62, 0x9d, 0x56, 0x24, 0x9d, 0x1d, 0xb2, 0x13,
+    0xbc, 0x17, 0x66, 0x43, 0xd1, 0x68, 0xd5, 0x3b, 0x17, 0x69, 0x17, 0xa6,
+    0x06, 0x9e, 0x12, 0xb8, 0x7c, 0xd5, 0xaf, 0x3e, 0x21, 0x1b, 0x31, 0xeb,
+    0x0b, 0xa4, 0x98, 0x1c, 0xf2, 0x6a, 0x5e, 0x7c, 0x9b, 0x45, 0x8f, 0xb2,
+    0x12, 0x06, 0xd5, 0x8c, 0x1d, 0xb2, 0xa7, 0x57, 0x5f, 0x2f, 0x4f, 0xdb,
+    0x52, 0x99, 0x7c, 0x58, 0x01, 0x5f, 0xf2, 0xa5, 0xf6, 0x51, 0x86, 0x21,
+    0x2f, 0x5b, 0x8d, 0x6a, 0xae, 0x83, 0x34, 0x6d, 0x58, 0x4b, 0xef, 0xfe,
+    0xbf, 0x73, 0x5d, 0xdb, 0xc4, 0x97, 0x2a, 0x85, 0xf3, 0x6c, 0x46, 0x42,
+    0xb3, 0x90, 0xc1, 0x57, 0x97, 0x50, 0x35, 0xb1, 0x9d, 0xb7, 0xc7, 0x3c,
+    0x85, 0x6d, 0x6c, 0xfd, 0xce, 0xb0, 0xc9, 0xa2, 0x77, 0xee, 0xc3, 0x6b,
+    0x0c, 0x37, 0xfa, 0x30, 0x91, 0xd1, 0x2c, 0xb8, 0x5e, 0x7f, 0x81, 0x5f,
+    0x87, 0xfd, 0x18, 0x02, 0x5a, 0x30, 0x4e, 0x62, 0xbc, 0x65, 0xc6, 0xce,
+    0x1a, 0xcf, 0x2b, 0xaa, 0x56, 0x3e, 0x4d, 0xcf, 0xba, 0x62, 0x5f, 0x9a,
+    0xd0, 0x72, 0xff, 0xef, 0x28, 0xbd, 0xbe, 0xd8, 0x57, 0x3d, 0xf5, 0x57,
+    0x7d, 0xe9, 0x71, 0x31, 0xec, 0x98, 0x90, 0x94, 0xd9, 0x54, 0xbf, 0x84,
+    0x0b, 0xe3, 0x06, 0x47, 0x19, 0x9a, 0x13, 0x1d, 0xef, 0x9d, 0x13, 0xf3,
+    0xdb, 0xc3, 0x5c, 0x72, 0x9e, 0xed, 0x24, 0xaa, 0x64, 0xed, 0xe7, 0x0d,
+    0xa0, 0x7c, 0x73, 0xba, 0x9b, 0x86, 0xa7, 0x3b, 0x55, 0xab, 0x58, 0x30,
+    0xf1, 0x15, 0x81, 0x83, 0x2f, 0xf9, 0x62, 0x84, 0x98, 0x66, 0xf6, 0x55,
+    0x21, 0xd8, 0xf2, 0x25, 0x64, 0x71, 0x4b, 0x12, 0x76, 0x59, 0xc5, 0xaa,
+    0x93, 0x67, 0xc3, 0x86, 0x25, 0xab, 0x4e, 0x4b, 0xf6, 0xd8, 0x3f, 0x44,
+    0x2e, 0x11, 0xe0, 0xbd, 0x6a, 0xf2, 0x5d, 0xf5, 0xf9, 0x53, 0xea, 0xa4,
+    0xc8, 0xd9, 0x50, 0x33, 0x81, 0xd9, 0xa8, 0x2d, 0x91, 0x7d, 0x13, 0x2a,
+    0x11, 0xcf, 0xde, 0x3f, 0x0a, 0xd2, 0xbc, 0x33, 0xb2, 0x62, 0x53, 0xea,
+    0x77, 0x88, 0x43, 0x66, 0x27, 0x43, 0x85, 0xe9, 0x5f, 0x55, 0xf5, 0x2a,
+    0x8a, 0xac, 0xdf, 0xff, 0x9b, 0x4c, 0x96, 0x9c, 0xa5, 0x7a, 0xce, 0xd5,
+    0x79, 0x18, 0xf1, 0x0b, 0x58, 0x95, 0x7a, 0xe7, 0xd3, 0x74, 0x65, 0x0b,
+    0xa4, 0x64, 0x30, 0xe8, 0x5c, 0xfc, 0x55, 0x56, 0xee, 0x14, 0x14, 0xd3,
+    0x45, 0x3b, 0xf8, 0xde, 0x05, 0x3e, 0xb9, 0x3c, 0xd7, 0x6a, 0x52, 0x72,
+    0x5b, 0x39, 0x09, 0xbe, 0x82, 0x23, 0x10, 0x4a, 0xb7, 0xc3, 0xdc, 0x4c,
+    0x5d, 0xc9, 0xf1, 0x14, 0x83, 0xf9, 0x0b, 0x9b, 0xe9, 0x23, 0x84, 0x6a,
+    0xc4, 0x08, 0x3d, 0xda, 0x3d, 0x12, 0x95, 0x87, 0x18, 0xa4, 0x7d, 0x3f,
+    0x23, 0xde, 0xd4, 0x1e, 0xa8, 0x47, 0xc3, 0x71, 0xdb, 0xf5, 0x03, 0x6c,
+    0x57, 0xe7, 0xa4, 0x43, 0x82, 0x33, 0x7b, 0x62, 0x46, 0x7d, 0xf7, 0x10,
+    0x69, 0x18, 0x38, 0x27, 0x9a, 0x6f, 0x38, 0xac, 0xfa, 0x92, 0xc5, 0xae,
+    0x66, 0xa6, 0x73, 0x95, 0x15, 0x0e, 0x4c, 0x04, 0xb6, 0xfc, 0xf5, 0xc7,
+    0x21, 0x3a, 0x99, 0xdb, 0x0e, 0x36, 0xf0, 0x56, 0xbc, 0x75, 0xf9, 0x87,
+    0x9b, 0x11, 0x18, 0x92, 0x64, 0x1a, 0xe7, 0xc7, 0xab, 0x5a, 0xc7, 0x26,
+    0x7f, 0x13, 0x98, 0x42, 0x52, 0x43, 0xdb, 0xc8, 0x6d, 0x0b, 0xb7, 0x31,
+    0x93, 0x24, 0xd6, 0xe8, 0x24, 0x1f, 0x6f, 0x21, 0xa7, 0x8c, 0xeb, 0xdb,
+    0x83, 0xb8, 0x89, 0xe3, 0xc1, 0xd7, 0x69, 0x3b, 0x02, 0x6b, 0x54, 0x0f,
+    0x84, 0x2f, 0xb5, 0x5c, 0x17, 0x77, 0xbe, 0xe5, 0x61, 0x0d, 0xc5, 0xdf,
+    0x3b, 0xcf, 0x3e, 0x93, 0x4f, 0xf5, 0x89, 0xb9, 0x5a, 0xc5, 0x29, 0x31,
+    0xc0, 0xc2, 0xff, 0xe5, 0x3f, 0xa6, 0xac, 0x03, 0xca, 0xf5, 0xff, 0xe0,
+    0x36, 0xce, 0xf3, 0xe2, 0xb7, 0x9c, 0x02, 0xe9, 0x9e, 0xd2, 0xbc, 0x87,
+    0x2f, 0x3d, 0x9a, 0x1d, 0x8f, 0xc5, 0x72, 0xb8, 0xa2, 0x01, 0xd4, 0x68,
+    0xb1, 0x84, 0x16, 0x10, 0xf6, 0xf3, 0x52, 0x25, 0xd9, 0xdc, 0x4c, 0xdd,
+    0x0f, 0xd6, 0x4a, 0xcf, 0x60, 0x96, 0x7e, 0xcc, 0x42, 0x0f, 0x64, 0x9d,
+    0x72, 0x46, 0x04, 0x07, 0xf2, 0x5b, 0xf4, 0x07, 0xd1, 0xf4, 0x59, 0x71,
+};
+
+static const uint8_t kSpakeMSmallPrecomp[15 * 2 * 32] = {
+    0xc8, 0xa6, 0x63, 0xc5, 0x97, 0xf1, 0xee, 0x40, 0xab, 0x62, 0x42, 0xee,
+    0x25, 0x6f, 0x32, 0x6c, 0x75, 0x2c, 0xa7, 0xd3, 0xbd, 0x32, 0x3b, 0x1e,
+    0x11, 0x9c, 0xbd, 0x04, 0xa9, 0x78, 0x6f, 0x45, 0x5a, 0xda, 0x7e, 0x4b,
+    0xf6, 0xdd, 0xd9, 0xad, 0xb6, 0x62, 0x6d, 0x32, 0x13, 0x1c, 0x6b, 0x5c,
+    0x51, 0xa1, 0xe3, 0x47, 0xa3, 0x47, 0x8f, 0x53, 0xcf, 0xcf, 0x44, 0x1b,
+    0x88, 0xee, 0xd1, 0x2e, 0x03, 0x89, 0xaf, 0xc0, 0x61, 0x2d, 0x9e, 0x35,
+    0xeb, 0x0e, 0x03, 0xe0, 0xb7, 0xfb, 0xa5, 0xbc, 0x44, 0xbe, 0x0c, 0x89,
+    0x0a, 0x0f, 0xd6, 0x59, 0x47, 0x9e, 0xe6, 0x3d, 0x36, 0x9d, 0xff, 0x44,
+    0x5e, 0xac, 0xab, 0xe5, 0x3a, 0xd5, 0xb0, 0x35, 0x9f, 0x6d, 0x7f, 0xba,
+    0xc0, 0x85, 0x0e, 0xf4, 0x70, 0x3f, 0x13, 0x90, 0x4c, 0x50, 0x1a, 0xee,
+    0xc5, 0xeb, 0x69, 0xfe, 0x98, 0x42, 0x87, 0x1d, 0xce, 0x6c, 0x29, 0xaa,
+    0x2b, 0x31, 0xc2, 0x38, 0x7b, 0x6b, 0xee, 0x88, 0x0b, 0xba, 0xce, 0xa8,
+    0xca, 0x19, 0x60, 0x1b, 0x16, 0xf1, 0x25, 0x1e, 0xcf, 0x63, 0x66, 0x1e,
+    0xbb, 0x63, 0xeb, 0x7d, 0xca, 0xd2, 0xb4, 0x23, 0x5a, 0x01, 0x6f, 0x05,
+    0xd1, 0xdc, 0x41, 0x73, 0x75, 0xc0, 0xfd, 0x30, 0x91, 0x52, 0x68, 0x96,
+    0x45, 0xb3, 0x66, 0x01, 0x3b, 0x53, 0x89, 0x3c, 0x69, 0xbc, 0x6c, 0x69,
+    0xe3, 0x51, 0x8f, 0xe3, 0xd2, 0x84, 0xd5, 0x28, 0x66, 0xb5, 0xe6, 0x06,
+    0x09, 0xfe, 0x6d, 0xb0, 0x72, 0x16, 0xe0, 0x8a, 0xce, 0x61, 0x65, 0xa9,
+    0x21, 0x32, 0x48, 0xdc, 0x7a, 0x1d, 0xe1, 0x38, 0x7f, 0x8c, 0x75, 0x88,
+    0x3d, 0x08, 0xa9, 0x4a, 0x6f, 0x3d, 0x9f, 0x7f, 0x3f, 0xbd, 0x57, 0x6b,
+    0x19, 0xce, 0x3f, 0x4a, 0xc9, 0xd3, 0xf9, 0x6e, 0x72, 0x7b, 0x5b, 0x74,
+    0xea, 0xbe, 0x9c, 0x7a, 0x6d, 0x9c, 0x40, 0x49, 0xe6, 0xfb, 0x2a, 0x1a,
+    0x75, 0x70, 0xe5, 0x4e, 0xed, 0x74, 0xe0, 0x75, 0xac, 0xc0, 0xb1, 0x11,
+    0x3e, 0xf2, 0xaf, 0x88, 0x4d, 0x66, 0xb6, 0xf6, 0x15, 0x4f, 0x3c, 0x6c,
+    0x77, 0xae, 0x47, 0x51, 0x63, 0x9a, 0xfe, 0xe1, 0xb4, 0x1a, 0x12, 0xdf,
+    0xe9, 0x54, 0x8d, 0x3b, 0x30, 0x2a, 0x75, 0xe3, 0xe5, 0x29, 0xb1, 0x4c,
+    0xb0, 0x7c, 0x6d, 0xb5, 0xae, 0x85, 0xdb, 0x1e, 0x38, 0x55, 0x96, 0xa5,
+    0x5b, 0x9f, 0x15, 0x23, 0x28, 0x36, 0xb8, 0xa2, 0x41, 0xb4, 0xd7, 0x19,
+    0x91, 0x8d, 0x26, 0x3e, 0xca, 0x9c, 0x05, 0x7a, 0x2b, 0x60, 0x45, 0x86,
+    0x8b, 0xee, 0x64, 0x6f, 0x5c, 0x09, 0x4d, 0x4b, 0x5a, 0x7f, 0xb0, 0xc3,
+    0x26, 0x9d, 0x8b, 0xb8, 0x83, 0x69, 0xcf, 0x16, 0x72, 0x62, 0x3e, 0x5e,
+    0x53, 0x4f, 0x9c, 0x73, 0x76, 0xfc, 0x19, 0xef, 0xa0, 0x74, 0x3a, 0x11,
+    0x1e, 0xd0, 0x4d, 0xb7, 0x87, 0xa1, 0xd6, 0x87, 0x6c, 0x0e, 0x6c, 0x8c,
+    0xe9, 0xa0, 0x44, 0xc4, 0x72, 0x3e, 0x73, 0x17, 0x13, 0xd1, 0x4e, 0x3d,
+    0x8e, 0x1d, 0x5a, 0x8b, 0x75, 0xcb, 0x59, 0x2c, 0x47, 0x87, 0x15, 0x41,
+    0xfe, 0x08, 0xe9, 0xa6, 0x97, 0x17, 0x08, 0x26, 0x6a, 0xb5, 0xbb, 0x73,
+    0xaa, 0xb8, 0x5b, 0x65, 0x65, 0x5b, 0x30, 0x9e, 0x62, 0x59, 0x02, 0xf8,
+    0xb8, 0x0f, 0x32, 0x10, 0xc1, 0x36, 0x08, 0x52, 0x98, 0x4a, 0x1e, 0xf0,
+    0xab, 0x21, 0x5e, 0xde, 0x16, 0x0c, 0xda, 0x09, 0x99, 0x6b, 0x9e, 0xc0,
+    0x90, 0xa5, 0x5a, 0xcc, 0xb0, 0xb7, 0xbb, 0xd2, 0x8b, 0x5f, 0xd3, 0x3b,
+    0x3e, 0x8c, 0xa5, 0x71, 0x66, 0x06, 0xe3, 0x28, 0xd4, 0xf8, 0x3f, 0xe5,
+    0x27, 0xdf, 0xfe, 0x0f, 0x09, 0xb2, 0x8a, 0x09, 0x5a, 0x23, 0x61, 0x0d,
+    0x2d, 0xf5, 0x44, 0xf1, 0x5c, 0xf8, 0x82, 0x4e, 0xdc, 0x78, 0x7a, 0xab,
+    0xc3, 0x57, 0x91, 0xaf, 0x65, 0x6e, 0x71, 0xf1, 0x44, 0xbf, 0xed, 0x43,
+    0x50, 0xb4, 0x67, 0x48, 0xef, 0x5a, 0x10, 0x46, 0x81, 0xb4, 0x0c, 0xc8,
+    0x48, 0xed, 0x99, 0x7a, 0x45, 0xa5, 0x92, 0xc3, 0x69, 0xd6, 0xd7, 0x8a,
+    0x20, 0x1b, 0xeb, 0x8f, 0xb2, 0xff, 0xec, 0x6d, 0x76, 0x04, 0xf8, 0xc2,
+    0x58, 0x9b, 0xf2, 0x20, 0x53, 0xc4, 0x74, 0x91, 0x19, 0xdd, 0x2d, 0x12,
+    0x53, 0xc7, 0x6e, 0xd0, 0x02, 0x51, 0x3c, 0xa6, 0x7d, 0x80, 0x75, 0x6b,
+    0x1d, 0xdf, 0xf8, 0x6a, 0x52, 0xbb, 0x81, 0xf8, 0x30, 0x45, 0xef, 0x51,
+    0x85, 0x36, 0xbe, 0x8e, 0xcf, 0x0b, 0x9a, 0x46, 0xe8, 0x3f, 0x99, 0xfd,
+    0xf7, 0xd9, 0x3e, 0x84, 0xe5, 0xe3, 0x37, 0xcf, 0x98, 0x7f, 0xeb, 0x5e,
+    0x5a, 0x53, 0x77, 0x1c, 0x20, 0xdc, 0xf1, 0x20, 0x99, 0xec, 0x60, 0x40,
+    0x93, 0xef, 0x5c, 0x1c, 0x81, 0xe2, 0xa5, 0xad, 0x2a, 0xc2, 0xdb, 0x6b,
+    0xc1, 0x7e, 0x8f, 0xa9, 0x23, 0x5b, 0xd9, 0x0d, 0xfe, 0xa0, 0xac, 0x11,
+    0x28, 0xba, 0x8e, 0x92, 0x07, 0x2d, 0x07, 0x40, 0x83, 0x14, 0x4c, 0x35,
+    0x8d, 0xd0, 0x11, 0xff, 0x98, 0xdb, 0x00, 0x30, 0x6f, 0x65, 0xb6, 0xa0,
+    0x7f, 0x9c, 0x08, 0xb8, 0xce, 0xb3, 0xa8, 0x42, 0xd3, 0x84, 0x45, 0xe1,
+    0xe3, 0x8f, 0xa6, 0x89, 0x21, 0xd7, 0x74, 0x02, 0x4d, 0x64, 0xdf, 0x54,
+    0x15, 0x9e, 0xba, 0x12, 0x49, 0x09, 0x41, 0xf6, 0x10, 0x24, 0xa1, 0x84,
+    0x15, 0xfd, 0x68, 0x6a, 0x57, 0x66, 0xb3, 0x6d, 0x4c, 0xea, 0xbf, 0xbc,
+    0x60, 0x3f, 0x52, 0x1c, 0x44, 0x1b, 0xc0, 0x4a, 0x25, 0xe3, 0xd9, 0x4c,
+    0x9a, 0x74, 0xad, 0xfc, 0x9e, 0x8d, 0x0b, 0x18, 0x66, 0x24, 0xd1, 0x06,
+    0xac, 0x68, 0xc1, 0xae, 0x14, 0xce, 0xb1, 0xf3, 0x86, 0x9f, 0x87, 0x11,
+    0xd7, 0x9f, 0x30, 0x92, 0xdb, 0xec, 0x0b, 0x4a, 0xe8, 0xf6, 0x53, 0x36,
+    0x68, 0x12, 0x11, 0x5e, 0xe0, 0x34, 0xa4, 0xff, 0x00, 0x0a, 0x26, 0xb8,
+    0x62, 0x79, 0x9c, 0x0c, 0xd5, 0xe5, 0xf5, 0x1c, 0x1a, 0x16, 0x84, 0x4d,
+    0x8e, 0x5d, 0x31, 0x7e, 0xf7, 0xe2, 0xd3, 0xa1, 0x41, 0x90, 0x61, 0x5d,
+    0x04, 0xb2, 0x9a, 0x18, 0x9e, 0x54, 0xfb, 0xd1, 0x61, 0x95, 0x1b, 0x08,
+    0xca, 0x7c, 0x49, 0x44, 0x74, 0x1d, 0x2f, 0xca, 0xc4, 0x7a, 0xe1, 0x8b,
+    0x2f, 0xbb, 0x96, 0xee, 0x19, 0x8a, 0x5d, 0xfb, 0x3e, 0x82, 0xe7, 0x15,
+    0xdb, 0x29, 0x14, 0xee, 0xc9, 0x4d, 0x9a, 0xfb, 0x9f, 0x8a, 0xbb, 0x17,
+    0x37, 0x1b, 0x6e, 0x28, 0x6c, 0xf9, 0xff, 0xb5, 0xb5, 0x8b, 0x9d, 0x88,
+    0x20, 0x08, 0x10, 0xd7, 0xca, 0x58, 0xf6, 0xe1, 0x32, 0x91, 0x6f, 0x36,
+    0xc0, 0xad, 0xc1, 0x57, 0x5d, 0x76, 0x31, 0x43, 0xf3, 0xdd, 0xec, 0xf1,
+    0xa9, 0x79, 0xe9, 0xe9, 0x85, 0xd7, 0x91, 0xc7, 0x31, 0x62, 0x3c, 0xd2,
+    0x90, 0x2c, 0x9c, 0xa4, 0x56, 0x37, 0x7b, 0xbe, 0x40, 0x58, 0xc0, 0x81,
+    0x83, 0x22, 0xe8, 0x13, 0x79, 0x18, 0xdb, 0x3a, 0x1b, 0x31, 0x0d, 0x00,
+    0x6c, 0x22, 0x62, 0x75, 0x70, 0xd8, 0x96, 0x59, 0x99, 0x44, 0x79, 0x71,
+    0xa6, 0x76, 0x81, 0x28, 0xb2, 0x65, 0xe8, 0x47, 0x14, 0xc6, 0x39, 0x06,
+};
+
+SPAKE2_CTX *SPAKE2_CTX_new(enum spake2_role_t my_role,
+                           const uint8_t *my_name, size_t my_name_len,
+                           const uint8_t *their_name, size_t their_name_len) {
+  SPAKE2_CTX *ctx = OPENSSL_malloc(sizeof(SPAKE2_CTX));
+  if (ctx == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ctx, 0, sizeof(SPAKE2_CTX));
+  ctx->my_role = my_role;
+
+  CBS my_name_cbs, their_name_cbs;
+  CBS_init(&my_name_cbs, my_name, my_name_len);
+  CBS_init(&their_name_cbs, their_name, their_name_len);
+  if (!CBS_stow(&my_name_cbs, &ctx->my_name, &ctx->my_name_len) ||
+      !CBS_stow(&their_name_cbs, &ctx->their_name, &ctx->their_name_len)) {
+    SPAKE2_CTX_free(ctx);
+    return NULL;
+  }
+
+  return ctx;
+}
+
+void SPAKE2_CTX_free(SPAKE2_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  OPENSSL_free(ctx->my_name);
+  OPENSSL_free(ctx->their_name);
+  OPENSSL_free(ctx);
+}
+
+// left_shift_3 sets |n| to |n|*8, where |n| is represented in little-endian
+// order.
+static void left_shift_3(uint8_t n[32]) {
+  uint8_t carry = 0;
+  unsigned i;
+
+  for (i = 0; i < 32; i++) {
+    const uint8_t next_carry = n[i] >> 5;
+    n[i] = (n[i] << 3) | carry;
+    carry = next_carry;
+  }
+}
+
+typedef union {
+  uint8_t bytes[32];
+  uint32_t words[8];
+} scalar;
+
+// kOrder is the order of the prime-order subgroup of curve25519 in
+// little-endian order.
+static const scalar kOrder = {{0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+                               0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10}};
+
+// scalar_cmov copies |src| to |dest| if |mask| is all ones.
+static void scalar_cmov(scalar *dest, const scalar *src, crypto_word_t mask) {
+  for (size_t i = 0; i < 8; i++) {
+    dest->words[i] =
+        constant_time_select_w(mask, src->words[i], dest->words[i]);
+  }
+}
+
+// scalar_double sets |s| to |2×s|.
+static void scalar_double(scalar *s) {
+  uint32_t carry = 0;
+
+  for (size_t i = 0; i < 8; i++) {
+    const uint32_t carry_out = s->words[i] >> 31;
+    s->words[i] = (s->words[i] << 1) | carry;
+    carry = carry_out;
+  }
+}
+
+// scalar_add sets |dest| to |dest| plus |src|.
+static void scalar_add(scalar *dest, const scalar *src) {
+  uint32_t carry = 0;
+
+  for (size_t i = 0; i < 8; i++) {
+    uint64_t tmp = ((uint64_t)dest->words[i] + src->words[i]) + carry;
+    dest->words[i] = (uint32_t)tmp;
+    carry = (uint32_t)(tmp >> 32);
+  }
+}
+
+int SPAKE2_generate_msg(SPAKE2_CTX *ctx, uint8_t *out, size_t *out_len,
+                         size_t max_out_len, const uint8_t *password,
+                         size_t password_len) {
+  if (ctx->state != spake2_state_init) {
+    return 0;
+  }
+
+  if (max_out_len < sizeof(ctx->my_msg)) {
+    return 0;
+  }
+
+  uint8_t private_tmp[64];
+  RAND_bytes(private_tmp, sizeof(private_tmp));
+  x25519_sc_reduce(private_tmp);
+  // Multiply by the cofactor (eight) so that we'll clear it when operating on
+  // the peer's point later in the protocol.
+  left_shift_3(private_tmp);
+  OPENSSL_memcpy(ctx->private_key, private_tmp, sizeof(ctx->private_key));
+
+  ge_p3 P;
+  x25519_ge_scalarmult_base(&P, ctx->private_key);
+
+  // mask = h(password) * <N or M>.
+  uint8_t password_tmp[SHA512_DIGEST_LENGTH];
+  SHA512(password, password_len, password_tmp);
+  OPENSSL_memcpy(ctx->password_hash, password_tmp, sizeof(ctx->password_hash));
+  x25519_sc_reduce(password_tmp);
+
+  // Due to a copy-paste error, the call to |left_shift_3| was omitted after
+  // the |x25519_sc_reduce|, just above. This meant that |ctx->password_scalar|
+  // was not a multiple of eight to clear the cofactor and thus three bits of
+  // the password hash would leak. In order to fix this in a unilateral way,
+  // points of small order are added to the mask point such that it is in the
+  // prime-order subgroup. Since the ephemeral scalar is a multiple of eight,
+  // these points will cancel out when calculating the shared secret.
+  //
+  // Adding points of small order is the same as adding multiples of the prime
+  // order to the password scalar. Since that's faster, that is what is done
+  // below. The prime order (kOrder) is a large prime, thus odd, thus the LSB
+  // is one. So adding it will flip the LSB. Adding twice it will flip the next
+  // bit and so one for all the bottom three bits.
+
+  scalar password_scalar;
+  OPENSSL_memcpy(&password_scalar, password_tmp, sizeof(password_scalar));
+
+  // |password_scalar| is the result of |x25519_sc_reduce| and thus is, at
+  // most, $l-1$ (where $l$ is |kOrder|, the order of the prime-order subgroup
+  // of Ed25519). In the following, we may add $l + 2×l + 4×l$ for a max value
+  // of $8×l-1$. That is < 2**256, as required.
+
+  if (!ctx->disable_password_scalar_hack) {
+    scalar order = kOrder;
+    scalar tmp;
+
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 1, 1));
+    scalar_add(&password_scalar, &tmp);
+
+    scalar_double(&order);
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 2, 2));
+    scalar_add(&password_scalar, &tmp);
+
+    scalar_double(&order);
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 4, 4));
+    scalar_add(&password_scalar, &tmp);
+
+    assert((password_scalar.bytes[0] & 7) == 0);
+  }
+
+  OPENSSL_memcpy(ctx->password_scalar, password_scalar.bytes,
+                 sizeof(ctx->password_scalar));
+
+  ge_p3 mask;
+  x25519_ge_scalarmult_small_precomp(&mask, ctx->password_scalar,
+                                     ctx->my_role == spake2_role_alice
+                                         ? kSpakeMSmallPrecomp
+                                         : kSpakeNSmallPrecomp);
+
+  // P* = P + mask.
+  ge_cached mask_cached;
+  x25519_ge_p3_to_cached(&mask_cached, &mask);
+  ge_p1p1 Pstar;
+  x25519_ge_add(&Pstar, &P, &mask_cached);
+
+  // Encode P*
+  ge_p2 Pstar_proj;
+  x25519_ge_p1p1_to_p2(&Pstar_proj, &Pstar);
+  x25519_ge_tobytes(ctx->my_msg, &Pstar_proj);
+
+  OPENSSL_memcpy(out, ctx->my_msg, sizeof(ctx->my_msg));
+  *out_len = sizeof(ctx->my_msg);
+  ctx->state = spake2_state_msg_generated;
+
+  return 1;
+}
+
+static void update_with_length_prefix(SHA512_CTX *sha, const uint8_t *data,
+                                      const size_t len) {
+  uint8_t len_le[8];
+  size_t l = len;
+  unsigned i;
+
+  for (i = 0; i < 8; i++) {
+    len_le[i] = l & 0xff;
+    l >>= 8;
+  }
+
+  SHA512_Update(sha, len_le, sizeof(len_le));
+  SHA512_Update(sha, data, len);
+}
+
+int SPAKE2_process_msg(SPAKE2_CTX *ctx, uint8_t *out_key, size_t *out_key_len,
+                       size_t max_out_key_len, const uint8_t *their_msg,
+                       size_t their_msg_len) {
+  if (ctx->state != spake2_state_msg_generated ||
+      their_msg_len != 32) {
+    return 0;
+  }
+
+  ge_p3 Qstar;
+  if (!x25519_ge_frombytes_vartime(&Qstar, their_msg)) {
+    // Point received from peer was not on the curve.
+    return 0;
+  }
+
+  // Unmask peer's value.
+  ge_p3 peers_mask;
+  x25519_ge_scalarmult_small_precomp(&peers_mask, ctx->password_scalar,
+                                    ctx->my_role == spake2_role_alice
+                                        ? kSpakeNSmallPrecomp
+                                        : kSpakeMSmallPrecomp);
+
+  ge_cached peers_mask_cached;
+  x25519_ge_p3_to_cached(&peers_mask_cached, &peers_mask);
+
+  ge_p1p1 Q_compl;
+  ge_p3 Q_ext;
+  x25519_ge_sub(&Q_compl, &Qstar, &peers_mask_cached);
+  x25519_ge_p1p1_to_p3(&Q_ext, &Q_compl);
+
+  ge_p2 dh_shared;
+  x25519_ge_scalarmult(&dh_shared, ctx->private_key, &Q_ext);
+
+  uint8_t dh_shared_encoded[32];
+  x25519_ge_tobytes(dh_shared_encoded, &dh_shared);
+
+  SHA512_CTX sha;
+  SHA512_Init(&sha);
+  if (ctx->my_role == spake2_role_alice) {
+    update_with_length_prefix(&sha, ctx->my_name, ctx->my_name_len);
+    update_with_length_prefix(&sha, ctx->their_name, ctx->their_name_len);
+    update_with_length_prefix(&sha, ctx->my_msg, sizeof(ctx->my_msg));
+    update_with_length_prefix(&sha, their_msg, 32);
+  } else {
+    update_with_length_prefix(&sha, ctx->their_name, ctx->their_name_len);
+    update_with_length_prefix(&sha, ctx->my_name, ctx->my_name_len);
+    update_with_length_prefix(&sha, their_msg, 32);
+    update_with_length_prefix(&sha, ctx->my_msg, sizeof(ctx->my_msg));
+  }
+  update_with_length_prefix(&sha, dh_shared_encoded, sizeof(dh_shared_encoded));
+  update_with_length_prefix(&sha, ctx->password_hash,
+                            sizeof(ctx->password_hash));
+
+  uint8_t key[SHA512_DIGEST_LENGTH];
+  SHA512_Final(key, &sha);
+
+  size_t to_copy = max_out_key_len;
+  if (to_copy > sizeof(key)) {
+    to_copy = sizeof(key);
+  }
+  OPENSSL_memcpy(out_key, key, to_copy);
+  *out_key_len = to_copy;
+  ctx->state = spake2_state_key_generated;
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c.grpc_back
new file mode 100644
index 0000000..650178c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/curve25519/spake25519.c.grpc_back	
@@ -0,0 +1,539 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/curve25519.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+
+#include "../internal.h"
+#include "../../third_party/fiat/internal.h"
+
+
+// The following precomputation tables are for the following
+// points used in the SPAKE2 protocol.
+//
+// N:
+//   x: 49918732221787544735331783592030787422991506689877079631459872391322455579424
+//   y: 54629554431565467720832445949441049581317094546788069926228343916274969994000
+//   encoded: 10e3df0ae37d8e7a99b5fe74b44672103dbddcbd06af680d71329a11693bc778
+//
+// M:
+//   x: 31406539342727633121250288103050113562375374900226415211311216773867585644232
+//   y: 21177308356423958466833845032658859666296341766942662650232962324899758529114
+//   encoded: 5ada7e4bf6ddd9adb6626d32131c6b5c51a1e347a3478f53cfcf441b88eed12e
+//
+// These points and their precomputation tables are generated with the
+// following Python code. For a description of the precomputation table,
+// see curve25519.c in this directory.
+//
+// Exact copies of the source code are kept in bug 27296743.
+
+/*
+import hashlib
+import ed25519 as E  # http://ed25519.cr.yp.to/python/ed25519.py
+
+SEED_N = 'edwards25519 point generation seed (N)'
+SEED_M = 'edwards25519 point generation seed (M)'
+
+def genpoint(seed):
+    v = hashlib.sha256(seed).digest()
+    it = 1
+    while True:
+        try:
+            x,y = E.decodepoint(v)
+        except Exception, e:
+            print e
+            it += 1
+            v = hashlib.sha256(v).digest()
+            continue
+        print "Found in %d iterations:" % it
+        print "  x = %d" % x
+        print "  y = %d" % y
+        print " Encoded (hex)"
+        print E.encodepoint((x,y)).encode('hex')
+        return (x,y)
+
+def gentable(P):
+    t = []
+    for i in range(1,16):
+        k = ((i >> 3 & 1) * (1 << 192) +
+             (i >> 2 & 1) * (1 << 128) +
+             (i >> 1 & 1) * (1 <<  64) +
+             (i      & 1))
+        t.append(E.scalarmult(P, k))
+    return ''.join(E.encodeint(x) + E.encodeint(y) for (x,y) in t)
+
+def printtable(table, name):
+    print "static const uint8_t %s[15 * 2 * 32] = {" % name,
+    for i in range(15 * 2 * 32):
+        if i % 12 == 0:
+            print "\n   ",
+        print " 0x%02x," % ord(table[i]),
+    print "\n};"
+
+if __name__ == "__main__":
+    print "Searching for N"
+    N = genpoint(SEED_N)
+    print "Generating precomputation table for N"
+    Ntable = gentable(N)
+    printtable(Ntable, "kSpakeNSmallPrecomp")
+
+    print "Searching for M"
+    M = genpoint(SEED_M)
+    print "Generating precomputation table for M"
+    Mtable = gentable(M)
+    printtable(Mtable, "kSpakeMSmallPrecomp")
+*/
+
+static const uint8_t kSpakeNSmallPrecomp[15 * 2 * 32] = {
+    0x20, 0x1b, 0xc5, 0xb3, 0x43, 0x17, 0x71, 0x10, 0x44, 0x1e, 0x73, 0xb3,
+    0xae, 0x3f, 0xbf, 0x9f, 0xf5, 0x44, 0xc8, 0x13, 0x8f, 0xd1, 0x01, 0xc2,
+    0x8a, 0x1a, 0x6d, 0xea, 0x4d, 0x00, 0x5d, 0x6e, 0x10, 0xe3, 0xdf, 0x0a,
+    0xe3, 0x7d, 0x8e, 0x7a, 0x99, 0xb5, 0xfe, 0x74, 0xb4, 0x46, 0x72, 0x10,
+    0x3d, 0xbd, 0xdc, 0xbd, 0x06, 0xaf, 0x68, 0x0d, 0x71, 0x32, 0x9a, 0x11,
+    0x69, 0x3b, 0xc7, 0x78, 0x93, 0xf1, 0x57, 0x97, 0x6e, 0xf0, 0x6e, 0x45,
+    0x37, 0x4a, 0xf4, 0x0b, 0x18, 0x51, 0xf5, 0x4f, 0x67, 0x3c, 0xdc, 0xec,
+    0x84, 0xed, 0xd0, 0xeb, 0xca, 0xfb, 0xdb, 0xff, 0x7f, 0xeb, 0xa8, 0x23,
+    0x68, 0x87, 0x13, 0x64, 0x6a, 0x10, 0xf7, 0x45, 0xe0, 0x0f, 0x32, 0x21,
+    0x59, 0x7c, 0x0e, 0x50, 0xad, 0x56, 0xd7, 0x12, 0x69, 0x7b, 0x58, 0xf8,
+    0xb9, 0x3b, 0xa5, 0xbb, 0x4d, 0x1b, 0x87, 0x1c, 0x46, 0xa7, 0x17, 0x9d,
+    0x6d, 0x84, 0x45, 0xbe, 0x7f, 0x95, 0xd2, 0x34, 0xcd, 0x89, 0x95, 0xc0,
+    0xf0, 0xd3, 0xdf, 0x6e, 0x10, 0x4a, 0xe3, 0x7b, 0xce, 0x7f, 0x40, 0x27,
+    0xc7, 0x2b, 0xab, 0x66, 0x03, 0x59, 0xb4, 0x7b, 0xc7, 0xc7, 0xf0, 0x39,
+    0x9a, 0x33, 0x35, 0xbf, 0xcc, 0x2f, 0xf3, 0x2e, 0x68, 0x9d, 0x53, 0x5c,
+    0x88, 0x52, 0xe3, 0x77, 0x90, 0xa1, 0x27, 0x85, 0xc5, 0x74, 0x7f, 0x23,
+    0x0e, 0x93, 0x01, 0x3e, 0xe7, 0x2e, 0x2e, 0x95, 0xf3, 0x0d, 0xc2, 0x25,
+    0x25, 0x39, 0x39, 0x3d, 0x6e, 0x8e, 0x89, 0xbd, 0xe8, 0xbb, 0x67, 0x5e,
+    0x8c, 0x66, 0x8b, 0x63, 0x28, 0x1e, 0x4e, 0x74, 0x85, 0xa8, 0xaf, 0x0f,
+    0x12, 0x5d, 0xb6, 0x8a, 0x83, 0x1a, 0x77, 0x76, 0x5e, 0x62, 0x8a, 0xa7,
+    0x3c, 0xb8, 0x05, 0x57, 0x2b, 0xaf, 0x36, 0x2e, 0x10, 0x90, 0xb2, 0x39,
+    0xb4, 0x3e, 0x75, 0x6d, 0x3a, 0xa8, 0x31, 0x35, 0xc2, 0x1e, 0x8f, 0xc2,
+    0x79, 0x89, 0x35, 0x16, 0x26, 0xd1, 0xc7, 0x0b, 0x04, 0x1f, 0x1d, 0xf9,
+    0x9c, 0x05, 0xa6, 0x6b, 0xb5, 0x19, 0x5a, 0x24, 0x6d, 0x91, 0xc5, 0x31,
+    0xfd, 0xc5, 0xfa, 0xe7, 0xa6, 0xcb, 0x0e, 0x4b, 0x18, 0x0d, 0x94, 0xc7,
+    0xee, 0x1d, 0x46, 0x1f, 0x92, 0xb1, 0xb2, 0x4a, 0x2b, 0x43, 0x37, 0xfe,
+    0xc2, 0x15, 0x11, 0x89, 0xef, 0x59, 0x73, 0x3c, 0x06, 0x76, 0x78, 0xcb,
+    0xa6, 0x0d, 0x79, 0x5f, 0x28, 0x0b, 0x5b, 0x8c, 0x9e, 0xe4, 0xaa, 0x51,
+    0x9a, 0x42, 0x6f, 0x11, 0x50, 0x3d, 0x01, 0xd6, 0x21, 0xc0, 0x99, 0x5e,
+    0x1a, 0xe8, 0x81, 0x25, 0x80, 0xeb, 0xed, 0x5d, 0x37, 0x47, 0x30, 0x70,
+    0xa0, 0x4e, 0x0b, 0x43, 0x17, 0xbe, 0xb6, 0x47, 0xe7, 0x2a, 0x62, 0x9d,
+    0x5d, 0xa6, 0xc5, 0x33, 0x62, 0x9d, 0x56, 0x24, 0x9d, 0x1d, 0xb2, 0x13,
+    0xbc, 0x17, 0x66, 0x43, 0xd1, 0x68, 0xd5, 0x3b, 0x17, 0x69, 0x17, 0xa6,
+    0x06, 0x9e, 0x12, 0xb8, 0x7c, 0xd5, 0xaf, 0x3e, 0x21, 0x1b, 0x31, 0xeb,
+    0x0b, 0xa4, 0x98, 0x1c, 0xf2, 0x6a, 0x5e, 0x7c, 0x9b, 0x45, 0x8f, 0xb2,
+    0x12, 0x06, 0xd5, 0x8c, 0x1d, 0xb2, 0xa7, 0x57, 0x5f, 0x2f, 0x4f, 0xdb,
+    0x52, 0x99, 0x7c, 0x58, 0x01, 0x5f, 0xf2, 0xa5, 0xf6, 0x51, 0x86, 0x21,
+    0x2f, 0x5b, 0x8d, 0x6a, 0xae, 0x83, 0x34, 0x6d, 0x58, 0x4b, 0xef, 0xfe,
+    0xbf, 0x73, 0x5d, 0xdb, 0xc4, 0x97, 0x2a, 0x85, 0xf3, 0x6c, 0x46, 0x42,
+    0xb3, 0x90, 0xc1, 0x57, 0x97, 0x50, 0x35, 0xb1, 0x9d, 0xb7, 0xc7, 0x3c,
+    0x85, 0x6d, 0x6c, 0xfd, 0xce, 0xb0, 0xc9, 0xa2, 0x77, 0xee, 0xc3, 0x6b,
+    0x0c, 0x37, 0xfa, 0x30, 0x91, 0xd1, 0x2c, 0xb8, 0x5e, 0x7f, 0x81, 0x5f,
+    0x87, 0xfd, 0x18, 0x02, 0x5a, 0x30, 0x4e, 0x62, 0xbc, 0x65, 0xc6, 0xce,
+    0x1a, 0xcf, 0x2b, 0xaa, 0x56, 0x3e, 0x4d, 0xcf, 0xba, 0x62, 0x5f, 0x9a,
+    0xd0, 0x72, 0xff, 0xef, 0x28, 0xbd, 0xbe, 0xd8, 0x57, 0x3d, 0xf5, 0x57,
+    0x7d, 0xe9, 0x71, 0x31, 0xec, 0x98, 0x90, 0x94, 0xd9, 0x54, 0xbf, 0x84,
+    0x0b, 0xe3, 0x06, 0x47, 0x19, 0x9a, 0x13, 0x1d, 0xef, 0x9d, 0x13, 0xf3,
+    0xdb, 0xc3, 0x5c, 0x72, 0x9e, 0xed, 0x24, 0xaa, 0x64, 0xed, 0xe7, 0x0d,
+    0xa0, 0x7c, 0x73, 0xba, 0x9b, 0x86, 0xa7, 0x3b, 0x55, 0xab, 0x58, 0x30,
+    0xf1, 0x15, 0x81, 0x83, 0x2f, 0xf9, 0x62, 0x84, 0x98, 0x66, 0xf6, 0x55,
+    0x21, 0xd8, 0xf2, 0x25, 0x64, 0x71, 0x4b, 0x12, 0x76, 0x59, 0xc5, 0xaa,
+    0x93, 0x67, 0xc3, 0x86, 0x25, 0xab, 0x4e, 0x4b, 0xf6, 0xd8, 0x3f, 0x44,
+    0x2e, 0x11, 0xe0, 0xbd, 0x6a, 0xf2, 0x5d, 0xf5, 0xf9, 0x53, 0xea, 0xa4,
+    0xc8, 0xd9, 0x50, 0x33, 0x81, 0xd9, 0xa8, 0x2d, 0x91, 0x7d, 0x13, 0x2a,
+    0x11, 0xcf, 0xde, 0x3f, 0x0a, 0xd2, 0xbc, 0x33, 0xb2, 0x62, 0x53, 0xea,
+    0x77, 0x88, 0x43, 0x66, 0x27, 0x43, 0x85, 0xe9, 0x5f, 0x55, 0xf5, 0x2a,
+    0x8a, 0xac, 0xdf, 0xff, 0x9b, 0x4c, 0x96, 0x9c, 0xa5, 0x7a, 0xce, 0xd5,
+    0x79, 0x18, 0xf1, 0x0b, 0x58, 0x95, 0x7a, 0xe7, 0xd3, 0x74, 0x65, 0x0b,
+    0xa4, 0x64, 0x30, 0xe8, 0x5c, 0xfc, 0x55, 0x56, 0xee, 0x14, 0x14, 0xd3,
+    0x45, 0x3b, 0xf8, 0xde, 0x05, 0x3e, 0xb9, 0x3c, 0xd7, 0x6a, 0x52, 0x72,
+    0x5b, 0x39, 0x09, 0xbe, 0x82, 0x23, 0x10, 0x4a, 0xb7, 0xc3, 0xdc, 0x4c,
+    0x5d, 0xc9, 0xf1, 0x14, 0x83, 0xf9, 0x0b, 0x9b, 0xe9, 0x23, 0x84, 0x6a,
+    0xc4, 0x08, 0x3d, 0xda, 0x3d, 0x12, 0x95, 0x87, 0x18, 0xa4, 0x7d, 0x3f,
+    0x23, 0xde, 0xd4, 0x1e, 0xa8, 0x47, 0xc3, 0x71, 0xdb, 0xf5, 0x03, 0x6c,
+    0x57, 0xe7, 0xa4, 0x43, 0x82, 0x33, 0x7b, 0x62, 0x46, 0x7d, 0xf7, 0x10,
+    0x69, 0x18, 0x38, 0x27, 0x9a, 0x6f, 0x38, 0xac, 0xfa, 0x92, 0xc5, 0xae,
+    0x66, 0xa6, 0x73, 0x95, 0x15, 0x0e, 0x4c, 0x04, 0xb6, 0xfc, 0xf5, 0xc7,
+    0x21, 0x3a, 0x99, 0xdb, 0x0e, 0x36, 0xf0, 0x56, 0xbc, 0x75, 0xf9, 0x87,
+    0x9b, 0x11, 0x18, 0x92, 0x64, 0x1a, 0xe7, 0xc7, 0xab, 0x5a, 0xc7, 0x26,
+    0x7f, 0x13, 0x98, 0x42, 0x52, 0x43, 0xdb, 0xc8, 0x6d, 0x0b, 0xb7, 0x31,
+    0x93, 0x24, 0xd6, 0xe8, 0x24, 0x1f, 0x6f, 0x21, 0xa7, 0x8c, 0xeb, 0xdb,
+    0x83, 0xb8, 0x89, 0xe3, 0xc1, 0xd7, 0x69, 0x3b, 0x02, 0x6b, 0x54, 0x0f,
+    0x84, 0x2f, 0xb5, 0x5c, 0x17, 0x77, 0xbe, 0xe5, 0x61, 0x0d, 0xc5, 0xdf,
+    0x3b, 0xcf, 0x3e, 0x93, 0x4f, 0xf5, 0x89, 0xb9, 0x5a, 0xc5, 0x29, 0x31,
+    0xc0, 0xc2, 0xff, 0xe5, 0x3f, 0xa6, 0xac, 0x03, 0xca, 0xf5, 0xff, 0xe0,
+    0x36, 0xce, 0xf3, 0xe2, 0xb7, 0x9c, 0x02, 0xe9, 0x9e, 0xd2, 0xbc, 0x87,
+    0x2f, 0x3d, 0x9a, 0x1d, 0x8f, 0xc5, 0x72, 0xb8, 0xa2, 0x01, 0xd4, 0x68,
+    0xb1, 0x84, 0x16, 0x10, 0xf6, 0xf3, 0x52, 0x25, 0xd9, 0xdc, 0x4c, 0xdd,
+    0x0f, 0xd6, 0x4a, 0xcf, 0x60, 0x96, 0x7e, 0xcc, 0x42, 0x0f, 0x64, 0x9d,
+    0x72, 0x46, 0x04, 0x07, 0xf2, 0x5b, 0xf4, 0x07, 0xd1, 0xf4, 0x59, 0x71,
+};
+
+static const uint8_t kSpakeMSmallPrecomp[15 * 2 * 32] = {
+    0xc8, 0xa6, 0x63, 0xc5, 0x97, 0xf1, 0xee, 0x40, 0xab, 0x62, 0x42, 0xee,
+    0x25, 0x6f, 0x32, 0x6c, 0x75, 0x2c, 0xa7, 0xd3, 0xbd, 0x32, 0x3b, 0x1e,
+    0x11, 0x9c, 0xbd, 0x04, 0xa9, 0x78, 0x6f, 0x45, 0x5a, 0xda, 0x7e, 0x4b,
+    0xf6, 0xdd, 0xd9, 0xad, 0xb6, 0x62, 0x6d, 0x32, 0x13, 0x1c, 0x6b, 0x5c,
+    0x51, 0xa1, 0xe3, 0x47, 0xa3, 0x47, 0x8f, 0x53, 0xcf, 0xcf, 0x44, 0x1b,
+    0x88, 0xee, 0xd1, 0x2e, 0x03, 0x89, 0xaf, 0xc0, 0x61, 0x2d, 0x9e, 0x35,
+    0xeb, 0x0e, 0x03, 0xe0, 0xb7, 0xfb, 0xa5, 0xbc, 0x44, 0xbe, 0x0c, 0x89,
+    0x0a, 0x0f, 0xd6, 0x59, 0x47, 0x9e, 0xe6, 0x3d, 0x36, 0x9d, 0xff, 0x44,
+    0x5e, 0xac, 0xab, 0xe5, 0x3a, 0xd5, 0xb0, 0x35, 0x9f, 0x6d, 0x7f, 0xba,
+    0xc0, 0x85, 0x0e, 0xf4, 0x70, 0x3f, 0x13, 0x90, 0x4c, 0x50, 0x1a, 0xee,
+    0xc5, 0xeb, 0x69, 0xfe, 0x98, 0x42, 0x87, 0x1d, 0xce, 0x6c, 0x29, 0xaa,
+    0x2b, 0x31, 0xc2, 0x38, 0x7b, 0x6b, 0xee, 0x88, 0x0b, 0xba, 0xce, 0xa8,
+    0xca, 0x19, 0x60, 0x1b, 0x16, 0xf1, 0x25, 0x1e, 0xcf, 0x63, 0x66, 0x1e,
+    0xbb, 0x63, 0xeb, 0x7d, 0xca, 0xd2, 0xb4, 0x23, 0x5a, 0x01, 0x6f, 0x05,
+    0xd1, 0xdc, 0x41, 0x73, 0x75, 0xc0, 0xfd, 0x30, 0x91, 0x52, 0x68, 0x96,
+    0x45, 0xb3, 0x66, 0x01, 0x3b, 0x53, 0x89, 0x3c, 0x69, 0xbc, 0x6c, 0x69,
+    0xe3, 0x51, 0x8f, 0xe3, 0xd2, 0x84, 0xd5, 0x28, 0x66, 0xb5, 0xe6, 0x06,
+    0x09, 0xfe, 0x6d, 0xb0, 0x72, 0x16, 0xe0, 0x8a, 0xce, 0x61, 0x65, 0xa9,
+    0x21, 0x32, 0x48, 0xdc, 0x7a, 0x1d, 0xe1, 0x38, 0x7f, 0x8c, 0x75, 0x88,
+    0x3d, 0x08, 0xa9, 0x4a, 0x6f, 0x3d, 0x9f, 0x7f, 0x3f, 0xbd, 0x57, 0x6b,
+    0x19, 0xce, 0x3f, 0x4a, 0xc9, 0xd3, 0xf9, 0x6e, 0x72, 0x7b, 0x5b, 0x74,
+    0xea, 0xbe, 0x9c, 0x7a, 0x6d, 0x9c, 0x40, 0x49, 0xe6, 0xfb, 0x2a, 0x1a,
+    0x75, 0x70, 0xe5, 0x4e, 0xed, 0x74, 0xe0, 0x75, 0xac, 0xc0, 0xb1, 0x11,
+    0x3e, 0xf2, 0xaf, 0x88, 0x4d, 0x66, 0xb6, 0xf6, 0x15, 0x4f, 0x3c, 0x6c,
+    0x77, 0xae, 0x47, 0x51, 0x63, 0x9a, 0xfe, 0xe1, 0xb4, 0x1a, 0x12, 0xdf,
+    0xe9, 0x54, 0x8d, 0x3b, 0x30, 0x2a, 0x75, 0xe3, 0xe5, 0x29, 0xb1, 0x4c,
+    0xb0, 0x7c, 0x6d, 0xb5, 0xae, 0x85, 0xdb, 0x1e, 0x38, 0x55, 0x96, 0xa5,
+    0x5b, 0x9f, 0x15, 0x23, 0x28, 0x36, 0xb8, 0xa2, 0x41, 0xb4, 0xd7, 0x19,
+    0x91, 0x8d, 0x26, 0x3e, 0xca, 0x9c, 0x05, 0x7a, 0x2b, 0x60, 0x45, 0x86,
+    0x8b, 0xee, 0x64, 0x6f, 0x5c, 0x09, 0x4d, 0x4b, 0x5a, 0x7f, 0xb0, 0xc3,
+    0x26, 0x9d, 0x8b, 0xb8, 0x83, 0x69, 0xcf, 0x16, 0x72, 0x62, 0x3e, 0x5e,
+    0x53, 0x4f, 0x9c, 0x73, 0x76, 0xfc, 0x19, 0xef, 0xa0, 0x74, 0x3a, 0x11,
+    0x1e, 0xd0, 0x4d, 0xb7, 0x87, 0xa1, 0xd6, 0x87, 0x6c, 0x0e, 0x6c, 0x8c,
+    0xe9, 0xa0, 0x44, 0xc4, 0x72, 0x3e, 0x73, 0x17, 0x13, 0xd1, 0x4e, 0x3d,
+    0x8e, 0x1d, 0x5a, 0x8b, 0x75, 0xcb, 0x59, 0x2c, 0x47, 0x87, 0x15, 0x41,
+    0xfe, 0x08, 0xe9, 0xa6, 0x97, 0x17, 0x08, 0x26, 0x6a, 0xb5, 0xbb, 0x73,
+    0xaa, 0xb8, 0x5b, 0x65, 0x65, 0x5b, 0x30, 0x9e, 0x62, 0x59, 0x02, 0xf8,
+    0xb8, 0x0f, 0x32, 0x10, 0xc1, 0x36, 0x08, 0x52, 0x98, 0x4a, 0x1e, 0xf0,
+    0xab, 0x21, 0x5e, 0xde, 0x16, 0x0c, 0xda, 0x09, 0x99, 0x6b, 0x9e, 0xc0,
+    0x90, 0xa5, 0x5a, 0xcc, 0xb0, 0xb7, 0xbb, 0xd2, 0x8b, 0x5f, 0xd3, 0x3b,
+    0x3e, 0x8c, 0xa5, 0x71, 0x66, 0x06, 0xe3, 0x28, 0xd4, 0xf8, 0x3f, 0xe5,
+    0x27, 0xdf, 0xfe, 0x0f, 0x09, 0xb2, 0x8a, 0x09, 0x5a, 0x23, 0x61, 0x0d,
+    0x2d, 0xf5, 0x44, 0xf1, 0x5c, 0xf8, 0x82, 0x4e, 0xdc, 0x78, 0x7a, 0xab,
+    0xc3, 0x57, 0x91, 0xaf, 0x65, 0x6e, 0x71, 0xf1, 0x44, 0xbf, 0xed, 0x43,
+    0x50, 0xb4, 0x67, 0x48, 0xef, 0x5a, 0x10, 0x46, 0x81, 0xb4, 0x0c, 0xc8,
+    0x48, 0xed, 0x99, 0x7a, 0x45, 0xa5, 0x92, 0xc3, 0x69, 0xd6, 0xd7, 0x8a,
+    0x20, 0x1b, 0xeb, 0x8f, 0xb2, 0xff, 0xec, 0x6d, 0x76, 0x04, 0xf8, 0xc2,
+    0x58, 0x9b, 0xf2, 0x20, 0x53, 0xc4, 0x74, 0x91, 0x19, 0xdd, 0x2d, 0x12,
+    0x53, 0xc7, 0x6e, 0xd0, 0x02, 0x51, 0x3c, 0xa6, 0x7d, 0x80, 0x75, 0x6b,
+    0x1d, 0xdf, 0xf8, 0x6a, 0x52, 0xbb, 0x81, 0xf8, 0x30, 0x45, 0xef, 0x51,
+    0x85, 0x36, 0xbe, 0x8e, 0xcf, 0x0b, 0x9a, 0x46, 0xe8, 0x3f, 0x99, 0xfd,
+    0xf7, 0xd9, 0x3e, 0x84, 0xe5, 0xe3, 0x37, 0xcf, 0x98, 0x7f, 0xeb, 0x5e,
+    0x5a, 0x53, 0x77, 0x1c, 0x20, 0xdc, 0xf1, 0x20, 0x99, 0xec, 0x60, 0x40,
+    0x93, 0xef, 0x5c, 0x1c, 0x81, 0xe2, 0xa5, 0xad, 0x2a, 0xc2, 0xdb, 0x6b,
+    0xc1, 0x7e, 0x8f, 0xa9, 0x23, 0x5b, 0xd9, 0x0d, 0xfe, 0xa0, 0xac, 0x11,
+    0x28, 0xba, 0x8e, 0x92, 0x07, 0x2d, 0x07, 0x40, 0x83, 0x14, 0x4c, 0x35,
+    0x8d, 0xd0, 0x11, 0xff, 0x98, 0xdb, 0x00, 0x30, 0x6f, 0x65, 0xb6, 0xa0,
+    0x7f, 0x9c, 0x08, 0xb8, 0xce, 0xb3, 0xa8, 0x42, 0xd3, 0x84, 0x45, 0xe1,
+    0xe3, 0x8f, 0xa6, 0x89, 0x21, 0xd7, 0x74, 0x02, 0x4d, 0x64, 0xdf, 0x54,
+    0x15, 0x9e, 0xba, 0x12, 0x49, 0x09, 0x41, 0xf6, 0x10, 0x24, 0xa1, 0x84,
+    0x15, 0xfd, 0x68, 0x6a, 0x57, 0x66, 0xb3, 0x6d, 0x4c, 0xea, 0xbf, 0xbc,
+    0x60, 0x3f, 0x52, 0x1c, 0x44, 0x1b, 0xc0, 0x4a, 0x25, 0xe3, 0xd9, 0x4c,
+    0x9a, 0x74, 0xad, 0xfc, 0x9e, 0x8d, 0x0b, 0x18, 0x66, 0x24, 0xd1, 0x06,
+    0xac, 0x68, 0xc1, 0xae, 0x14, 0xce, 0xb1, 0xf3, 0x86, 0x9f, 0x87, 0x11,
+    0xd7, 0x9f, 0x30, 0x92, 0xdb, 0xec, 0x0b, 0x4a, 0xe8, 0xf6, 0x53, 0x36,
+    0x68, 0x12, 0x11, 0x5e, 0xe0, 0x34, 0xa4, 0xff, 0x00, 0x0a, 0x26, 0xb8,
+    0x62, 0x79, 0x9c, 0x0c, 0xd5, 0xe5, 0xf5, 0x1c, 0x1a, 0x16, 0x84, 0x4d,
+    0x8e, 0x5d, 0x31, 0x7e, 0xf7, 0xe2, 0xd3, 0xa1, 0x41, 0x90, 0x61, 0x5d,
+    0x04, 0xb2, 0x9a, 0x18, 0x9e, 0x54, 0xfb, 0xd1, 0x61, 0x95, 0x1b, 0x08,
+    0xca, 0x7c, 0x49, 0x44, 0x74, 0x1d, 0x2f, 0xca, 0xc4, 0x7a, 0xe1, 0x8b,
+    0x2f, 0xbb, 0x96, 0xee, 0x19, 0x8a, 0x5d, 0xfb, 0x3e, 0x82, 0xe7, 0x15,
+    0xdb, 0x29, 0x14, 0xee, 0xc9, 0x4d, 0x9a, 0xfb, 0x9f, 0x8a, 0xbb, 0x17,
+    0x37, 0x1b, 0x6e, 0x28, 0x6c, 0xf9, 0xff, 0xb5, 0xb5, 0x8b, 0x9d, 0x88,
+    0x20, 0x08, 0x10, 0xd7, 0xca, 0x58, 0xf6, 0xe1, 0x32, 0x91, 0x6f, 0x36,
+    0xc0, 0xad, 0xc1, 0x57, 0x5d, 0x76, 0x31, 0x43, 0xf3, 0xdd, 0xec, 0xf1,
+    0xa9, 0x79, 0xe9, 0xe9, 0x85, 0xd7, 0x91, 0xc7, 0x31, 0x62, 0x3c, 0xd2,
+    0x90, 0x2c, 0x9c, 0xa4, 0x56, 0x37, 0x7b, 0xbe, 0x40, 0x58, 0xc0, 0x81,
+    0x83, 0x22, 0xe8, 0x13, 0x79, 0x18, 0xdb, 0x3a, 0x1b, 0x31, 0x0d, 0x00,
+    0x6c, 0x22, 0x62, 0x75, 0x70, 0xd8, 0x96, 0x59, 0x99, 0x44, 0x79, 0x71,
+    0xa6, 0x76, 0x81, 0x28, 0xb2, 0x65, 0xe8, 0x47, 0x14, 0xc6, 0x39, 0x06,
+};
+
+SPAKE2_CTX *SPAKE2_CTX_new(enum spake2_role_t my_role,
+                           const uint8_t *my_name, size_t my_name_len,
+                           const uint8_t *their_name, size_t their_name_len) {
+  SPAKE2_CTX *ctx = OPENSSL_malloc(sizeof(SPAKE2_CTX));
+  if (ctx == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ctx, 0, sizeof(SPAKE2_CTX));
+  ctx->my_role = my_role;
+
+  CBS my_name_cbs, their_name_cbs;
+  CBS_init(&my_name_cbs, my_name, my_name_len);
+  CBS_init(&their_name_cbs, their_name, their_name_len);
+  if (!CBS_stow(&my_name_cbs, &ctx->my_name, &ctx->my_name_len) ||
+      !CBS_stow(&their_name_cbs, &ctx->their_name, &ctx->their_name_len)) {
+    SPAKE2_CTX_free(ctx);
+    return NULL;
+  }
+
+  return ctx;
+}
+
+void SPAKE2_CTX_free(SPAKE2_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  OPENSSL_free(ctx->my_name);
+  OPENSSL_free(ctx->their_name);
+  OPENSSL_free(ctx);
+}
+
+// left_shift_3 sets |n| to |n|*8, where |n| is represented in little-endian
+// order.
+static void left_shift_3(uint8_t n[32]) {
+  uint8_t carry = 0;
+  unsigned i;
+
+  for (i = 0; i < 32; i++) {
+    const uint8_t next_carry = n[i] >> 5;
+    n[i] = (n[i] << 3) | carry;
+    carry = next_carry;
+  }
+}
+
+typedef union {
+  uint8_t bytes[32];
+  uint32_t words[8];
+} scalar;
+
+// kOrder is the order of the prime-order subgroup of curve25519 in
+// little-endian order.
+static const scalar kOrder = {{0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
+                               0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10}};
+
+// scalar_cmov copies |src| to |dest| if |mask| is all ones.
+static void scalar_cmov(scalar *dest, const scalar *src, crypto_word_t mask) {
+  for (size_t i = 0; i < 8; i++) {
+    dest->words[i] =
+        constant_time_select_w(mask, src->words[i], dest->words[i]);
+  }
+}
+
+// scalar_double sets |s| to |2×s|.
+static void scalar_double(scalar *s) {
+  uint32_t carry = 0;
+
+  for (size_t i = 0; i < 8; i++) {
+    const uint32_t carry_out = s->words[i] >> 31;
+    s->words[i] = (s->words[i] << 1) | carry;
+    carry = carry_out;
+  }
+}
+
+// scalar_add sets |dest| to |dest| plus |src|.
+static void scalar_add(scalar *dest, const scalar *src) {
+  uint32_t carry = 0;
+
+  for (size_t i = 0; i < 8; i++) {
+    uint64_t tmp = ((uint64_t)dest->words[i] + src->words[i]) + carry;
+    dest->words[i] = (uint32_t)tmp;
+    carry = (uint32_t)(tmp >> 32);
+  }
+}
+
+int SPAKE2_generate_msg(SPAKE2_CTX *ctx, uint8_t *out, size_t *out_len,
+                         size_t max_out_len, const uint8_t *password,
+                         size_t password_len) {
+  if (ctx->state != spake2_state_init) {
+    return 0;
+  }
+
+  if (max_out_len < sizeof(ctx->my_msg)) {
+    return 0;
+  }
+
+  uint8_t private_tmp[64];
+  RAND_bytes(private_tmp, sizeof(private_tmp));
+  x25519_sc_reduce(private_tmp);
+  // Multiply by the cofactor (eight) so that we'll clear it when operating on
+  // the peer's point later in the protocol.
+  left_shift_3(private_tmp);
+  OPENSSL_memcpy(ctx->private_key, private_tmp, sizeof(ctx->private_key));
+
+  ge_p3 P;
+  x25519_ge_scalarmult_base(&P, ctx->private_key);
+
+  // mask = h(password) * <N or M>.
+  uint8_t password_tmp[SHA512_DIGEST_LENGTH];
+  SHA512(password, password_len, password_tmp);
+  OPENSSL_memcpy(ctx->password_hash, password_tmp, sizeof(ctx->password_hash));
+  x25519_sc_reduce(password_tmp);
+
+  // Due to a copy-paste error, the call to |left_shift_3| was omitted after
+  // the |x25519_sc_reduce|, just above. This meant that |ctx->password_scalar|
+  // was not a multiple of eight to clear the cofactor and thus three bits of
+  // the password hash would leak. In order to fix this in a unilateral way,
+  // points of small order are added to the mask point such that it is in the
+  // prime-order subgroup. Since the ephemeral scalar is a multiple of eight,
+  // these points will cancel out when calculating the shared secret.
+  //
+  // Adding points of small order is the same as adding multiples of the prime
+  // order to the password scalar. Since that's faster, that is what is done
+  // below. The prime order (kOrder) is a large prime, thus odd, thus the LSB
+  // is one. So adding it will flip the LSB. Adding twice it will flip the next
+  // bit and so one for all the bottom three bits.
+
+  scalar password_scalar;
+  OPENSSL_memcpy(&password_scalar, password_tmp, sizeof(password_scalar));
+
+  // |password_scalar| is the result of |x25519_sc_reduce| and thus is, at
+  // most, $l-1$ (where $l$ is |kOrder|, the order of the prime-order subgroup
+  // of Ed25519). In the following, we may add $l + 2×l + 4×l$ for a max value
+  // of $8×l-1$. That is < 2**256, as required.
+
+  if (!ctx->disable_password_scalar_hack) {
+    scalar order = kOrder;
+    scalar tmp;
+
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 1, 1));
+    scalar_add(&password_scalar, &tmp);
+
+    scalar_double(&order);
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 2, 2));
+    scalar_add(&password_scalar, &tmp);
+
+    scalar_double(&order);
+    OPENSSL_memset(&tmp, 0, sizeof(tmp));
+    scalar_cmov(&tmp, &order,
+                constant_time_eq_w(password_scalar.bytes[0] & 4, 4));
+    scalar_add(&password_scalar, &tmp);
+
+    assert((password_scalar.bytes[0] & 7) == 0);
+  }
+
+  OPENSSL_memcpy(ctx->password_scalar, password_scalar.bytes,
+                 sizeof(ctx->password_scalar));
+
+  ge_p3 mask;
+  x25519_ge_scalarmult_small_precomp(&mask, ctx->password_scalar,
+                                     ctx->my_role == spake2_role_alice
+                                         ? kSpakeMSmallPrecomp
+                                         : kSpakeNSmallPrecomp);
+
+  // P* = P + mask.
+  ge_cached mask_cached;
+  x25519_ge_p3_to_cached(&mask_cached, &mask);
+  ge_p1p1 Pstar;
+  x25519_ge_add(&Pstar, &P, &mask_cached);
+
+  // Encode P*
+  ge_p2 Pstar_proj;
+  x25519_ge_p1p1_to_p2(&Pstar_proj, &Pstar);
+  x25519_ge_tobytes(ctx->my_msg, &Pstar_proj);
+
+  OPENSSL_memcpy(out, ctx->my_msg, sizeof(ctx->my_msg));
+  *out_len = sizeof(ctx->my_msg);
+  ctx->state = spake2_state_msg_generated;
+
+  return 1;
+}
+
+static void update_with_length_prefix(SHA512_CTX *sha, const uint8_t *data,
+                                      const size_t len) {
+  uint8_t len_le[8];
+  size_t l = len;
+  unsigned i;
+
+  for (i = 0; i < 8; i++) {
+    len_le[i] = l & 0xff;
+    l >>= 8;
+  }
+
+  SHA512_Update(sha, len_le, sizeof(len_le));
+  SHA512_Update(sha, data, len);
+}
+
+int SPAKE2_process_msg(SPAKE2_CTX *ctx, uint8_t *out_key, size_t *out_key_len,
+                       size_t max_out_key_len, const uint8_t *their_msg,
+                       size_t their_msg_len) {
+  if (ctx->state != spake2_state_msg_generated ||
+      their_msg_len != 32) {
+    return 0;
+  }
+
+  ge_p3 Qstar;
+  if (!x25519_ge_frombytes_vartime(&Qstar, their_msg)) {
+    // Point received from peer was not on the curve.
+    return 0;
+  }
+
+  // Unmask peer's value.
+  ge_p3 peers_mask;
+  x25519_ge_scalarmult_small_precomp(&peers_mask, ctx->password_scalar,
+                                    ctx->my_role == spake2_role_alice
+                                        ? kSpakeNSmallPrecomp
+                                        : kSpakeMSmallPrecomp);
+
+  ge_cached peers_mask_cached;
+  x25519_ge_p3_to_cached(&peers_mask_cached, &peers_mask);
+
+  ge_p1p1 Q_compl;
+  ge_p3 Q_ext;
+  x25519_ge_sub(&Q_compl, &Qstar, &peers_mask_cached);
+  x25519_ge_p1p1_to_p3(&Q_ext, &Q_compl);
+
+  ge_p2 dh_shared;
+  x25519_ge_scalarmult(&dh_shared, ctx->private_key, &Q_ext);
+
+  uint8_t dh_shared_encoded[32];
+  x25519_ge_tobytes(dh_shared_encoded, &dh_shared);
+
+  SHA512_CTX sha;
+  SHA512_Init(&sha);
+  if (ctx->my_role == spake2_role_alice) {
+    update_with_length_prefix(&sha, ctx->my_name, ctx->my_name_len);
+    update_with_length_prefix(&sha, ctx->their_name, ctx->their_name_len);
+    update_with_length_prefix(&sha, ctx->my_msg, sizeof(ctx->my_msg));
+    update_with_length_prefix(&sha, their_msg, 32);
+  } else {
+    update_with_length_prefix(&sha, ctx->their_name, ctx->their_name_len);
+    update_with_length_prefix(&sha, ctx->my_name, ctx->my_name_len);
+    update_with_length_prefix(&sha, their_msg, 32);
+    update_with_length_prefix(&sha, ctx->my_msg, sizeof(ctx->my_msg));
+  }
+  update_with_length_prefix(&sha, dh_shared_encoded, sizeof(dh_shared_encoded));
+  update_with_length_prefix(&sha, ctx->password_hash,
+                            sizeof(ctx->password_hash));
+
+  uint8_t key[SHA512_DIGEST_LENGTH];
+  SHA512_Final(key, &sha);
+
+  size_t to_copy = max_out_key_len;
+  if (to_copy > sizeof(key)) {
+    to_copy = sizeof(key);
+  }
+  OPENSSL_memcpy(out_key, key, to_copy);
+  *out_key_len = to_copy;
+  ctx->state = spake2_state_key_generated;
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c
new file mode 100644
index 0000000..0b85183
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c	
@@ -0,0 +1,217 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/dh.h>
+
+#include <openssl_grpc/bn.h>
+
+
+int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *out_flags) {
+  *out_flags = 0;
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    return 0;
+  }
+  BN_CTX_start(ctx);
+
+  int ok = 0;
+
+  // Check |pub_key| is greater than 1.
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL ||
+      !BN_set_word(tmp, 1)) {
+    goto err;
+  }
+  if (BN_cmp(pub_key, tmp) <= 0) {
+    *out_flags |= DH_CHECK_PUBKEY_TOO_SMALL;
+  }
+
+  // Check |pub_key| is less than |dh->p| - 1.
+  if (!BN_copy(tmp, dh->p) ||
+      !BN_sub_word(tmp, 1)) {
+    goto err;
+  }
+  if (BN_cmp(pub_key, tmp) >= 0) {
+    *out_flags |= DH_CHECK_PUBKEY_TOO_LARGE;
+  }
+
+  if (dh->q != NULL) {
+    // Check |pub_key|^|dh->q| is 1 mod |dh->p|. This is necessary for RFC 5114
+    // groups which are not safe primes but pick a generator on a prime-order
+    // subgroup of size |dh->q|.
+    if (!BN_mod_exp_mont(tmp, pub_key, dh->q, dh->p, ctx, NULL)) {
+      goto err;
+    }
+    if (!BN_is_one(tmp)) {
+      *out_flags |= DH_CHECK_PUBKEY_INVALID;
+    }
+  }
+
+  ok = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+
+int DH_check(const DH *dh, int *out_flags) {
+  // Check that p is a safe prime and if g is 2, 3 or 5, check that it is a
+  // suitable generator where:
+  //   for 2, p mod 24 == 11
+  //   for 3, p mod 12 == 5
+  //   for 5, p mod 10 == 3 or 7
+  // should hold.
+  int ok = 0, r;
+  BN_CTX *ctx = NULL;
+  BN_ULONG l;
+  BIGNUM *t1 = NULL, *t2 = NULL;
+
+  *out_flags = 0;
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  if (t1 == NULL) {
+    goto err;
+  }
+  t2 = BN_CTX_get(ctx);
+  if (t2 == NULL) {
+    goto err;
+  }
+
+  if (dh->q) {
+    if (BN_cmp(dh->g, BN_value_one()) <= 0) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    } else if (BN_cmp(dh->g, dh->p) >= 0) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    } else {
+      // Check g^q == 1 mod p
+      if (!BN_mod_exp_mont(t1, dh->g, dh->q, dh->p, ctx, NULL)) {
+        goto err;
+      }
+      if (!BN_is_one(t1)) {
+        *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+      }
+    }
+    r = BN_is_prime_ex(dh->q, BN_prime_checks_for_validation, ctx, NULL);
+    if (r < 0) {
+      goto err;
+    }
+    if (!r) {
+      *out_flags |= DH_CHECK_Q_NOT_PRIME;
+    }
+    // Check p == 1 mod q  i.e. q divides p - 1
+    if (!BN_div(t1, t2, dh->p, dh->q, ctx)) {
+      goto err;
+    }
+    if (!BN_is_one(t2)) {
+      *out_flags |= DH_CHECK_INVALID_Q_VALUE;
+    }
+    if (dh->j && BN_cmp(dh->j, t1)) {
+      *out_flags |= DH_CHECK_INVALID_J_VALUE;
+    }
+  } else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
+    l = BN_mod_word(dh->p, 24);
+    if (l == (BN_ULONG)-1) {
+      goto err;
+    }
+    if (l != 11) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    }
+  } else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
+    l = BN_mod_word(dh->p, 10);
+    if (l == (BN_ULONG)-1) {
+      goto err;
+    }
+    if (l != 3 && l != 7) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    }
+  } else {
+    *out_flags |= DH_CHECK_UNABLE_TO_CHECK_GENERATOR;
+  }
+
+  r = BN_is_prime_ex(dh->p, BN_prime_checks_for_validation, ctx, NULL);
+  if (r < 0) {
+    goto err;
+  }
+  if (!r) {
+    *out_flags |= DH_CHECK_P_NOT_PRIME;
+  } else if (!dh->q) {
+    if (!BN_rshift1(t1, dh->p)) {
+      goto err;
+    }
+    r = BN_is_prime_ex(t1, BN_prime_checks_for_validation, ctx, NULL);
+    if (r < 0) {
+      goto err;
+    }
+    if (!r) {
+      *out_flags |= DH_CHECK_P_NOT_SAFE_PRIME;
+    }
+  }
+  ok = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c.grpc_back
new file mode 100644
index 0000000..5b6e03a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/check.c.grpc_back	
@@ -0,0 +1,217 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/dh.h>
+
+#include <openssl/bn.h>
+
+
+int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key, int *out_flags) {
+  *out_flags = 0;
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    return 0;
+  }
+  BN_CTX_start(ctx);
+
+  int ok = 0;
+
+  // Check |pub_key| is greater than 1.
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL ||
+      !BN_set_word(tmp, 1)) {
+    goto err;
+  }
+  if (BN_cmp(pub_key, tmp) <= 0) {
+    *out_flags |= DH_CHECK_PUBKEY_TOO_SMALL;
+  }
+
+  // Check |pub_key| is less than |dh->p| - 1.
+  if (!BN_copy(tmp, dh->p) ||
+      !BN_sub_word(tmp, 1)) {
+    goto err;
+  }
+  if (BN_cmp(pub_key, tmp) >= 0) {
+    *out_flags |= DH_CHECK_PUBKEY_TOO_LARGE;
+  }
+
+  if (dh->q != NULL) {
+    // Check |pub_key|^|dh->q| is 1 mod |dh->p|. This is necessary for RFC 5114
+    // groups which are not safe primes but pick a generator on a prime-order
+    // subgroup of size |dh->q|.
+    if (!BN_mod_exp_mont(tmp, pub_key, dh->q, dh->p, ctx, NULL)) {
+      goto err;
+    }
+    if (!BN_is_one(tmp)) {
+      *out_flags |= DH_CHECK_PUBKEY_INVALID;
+    }
+  }
+
+  ok = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+
+int DH_check(const DH *dh, int *out_flags) {
+  // Check that p is a safe prime and if g is 2, 3 or 5, check that it is a
+  // suitable generator where:
+  //   for 2, p mod 24 == 11
+  //   for 3, p mod 12 == 5
+  //   for 5, p mod 10 == 3 or 7
+  // should hold.
+  int ok = 0, r;
+  BN_CTX *ctx = NULL;
+  BN_ULONG l;
+  BIGNUM *t1 = NULL, *t2 = NULL;
+
+  *out_flags = 0;
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  if (t1 == NULL) {
+    goto err;
+  }
+  t2 = BN_CTX_get(ctx);
+  if (t2 == NULL) {
+    goto err;
+  }
+
+  if (dh->q) {
+    if (BN_cmp(dh->g, BN_value_one()) <= 0) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    } else if (BN_cmp(dh->g, dh->p) >= 0) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    } else {
+      // Check g^q == 1 mod p
+      if (!BN_mod_exp_mont(t1, dh->g, dh->q, dh->p, ctx, NULL)) {
+        goto err;
+      }
+      if (!BN_is_one(t1)) {
+        *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+      }
+    }
+    r = BN_is_prime_ex(dh->q, BN_prime_checks_for_validation, ctx, NULL);
+    if (r < 0) {
+      goto err;
+    }
+    if (!r) {
+      *out_flags |= DH_CHECK_Q_NOT_PRIME;
+    }
+    // Check p == 1 mod q  i.e. q divides p - 1
+    if (!BN_div(t1, t2, dh->p, dh->q, ctx)) {
+      goto err;
+    }
+    if (!BN_is_one(t2)) {
+      *out_flags |= DH_CHECK_INVALID_Q_VALUE;
+    }
+    if (dh->j && BN_cmp(dh->j, t1)) {
+      *out_flags |= DH_CHECK_INVALID_J_VALUE;
+    }
+  } else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
+    l = BN_mod_word(dh->p, 24);
+    if (l == (BN_ULONG)-1) {
+      goto err;
+    }
+    if (l != 11) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    }
+  } else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
+    l = BN_mod_word(dh->p, 10);
+    if (l == (BN_ULONG)-1) {
+      goto err;
+    }
+    if (l != 3 && l != 7) {
+      *out_flags |= DH_CHECK_NOT_SUITABLE_GENERATOR;
+    }
+  } else {
+    *out_flags |= DH_CHECK_UNABLE_TO_CHECK_GENERATOR;
+  }
+
+  r = BN_is_prime_ex(dh->p, BN_prime_checks_for_validation, ctx, NULL);
+  if (r < 0) {
+    goto err;
+  }
+  if (!r) {
+    *out_flags |= DH_CHECK_P_NOT_PRIME;
+  } else if (!dh->q) {
+    if (!BN_rshift1(t1, dh->p)) {
+      goto err;
+    }
+    r = BN_is_prime_ex(t1, BN_prime_checks_for_validation, ctx, NULL);
+    if (r < 0) {
+      goto err;
+    }
+    if (!r) {
+      *out_flags |= DH_CHECK_P_NOT_SAFE_PRIME;
+    }
+  }
+  ok = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c
new file mode 100644
index 0000000..65457ff
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c	
@@ -0,0 +1,518 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/dh.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+
+#define OPENSSL_DH_MAX_MODULUS_BITS 10000
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+DH *DH_new(void) {
+  DH *dh = OPENSSL_malloc(sizeof(DH));
+  if (dh == NULL) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(dh, 0, sizeof(DH));
+
+  CRYPTO_MUTEX_init(&dh->method_mont_p_lock);
+
+  dh->references = 1;
+  CRYPTO_new_ex_data(&dh->ex_data);
+
+  return dh;
+}
+
+void DH_free(DH *dh) {
+  if (dh == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&dh->references)) {
+    return;
+  }
+
+  CRYPTO_free_ex_data(&g_ex_data_class, dh, &dh->ex_data);
+
+  BN_MONT_CTX_free(dh->method_mont_p);
+  BN_clear_free(dh->p);
+  BN_clear_free(dh->g);
+  BN_clear_free(dh->q);
+  BN_clear_free(dh->j);
+  OPENSSL_free(dh->seed);
+  BN_clear_free(dh->counter);
+  BN_clear_free(dh->pub_key);
+  BN_clear_free(dh->priv_key);
+  CRYPTO_MUTEX_cleanup(&dh->method_mont_p_lock);
+
+  OPENSSL_free(dh);
+}
+
+void DH_get0_key(const DH *dh, const BIGNUM **out_pub_key,
+                 const BIGNUM **out_priv_key) {
+  if (out_pub_key != NULL) {
+    *out_pub_key = dh->pub_key;
+  }
+  if (out_priv_key != NULL) {
+    *out_priv_key = dh->priv_key;
+  }
+}
+
+int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key) {
+  if (pub_key != NULL) {
+    BN_free(dh->pub_key);
+    dh->pub_key = pub_key;
+  }
+
+  if (priv_key != NULL) {
+    BN_free(dh->priv_key);
+    dh->priv_key = priv_key;
+  }
+
+  return 1;
+}
+
+void DH_get0_pqg(const DH *dh, const BIGNUM **out_p, const BIGNUM **out_q,
+                 const BIGNUM **out_g) {
+  if (out_p != NULL) {
+    *out_p = dh->p;
+  }
+  if (out_q != NULL) {
+    *out_q = dh->q;
+  }
+  if (out_g != NULL) {
+    *out_g = dh->g;
+  }
+}
+
+int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g) {
+  if ((dh->p == NULL && p == NULL) ||
+      (dh->g == NULL && g == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(dh->p);
+    dh->p = p;
+  }
+
+  if (q != NULL) {
+    BN_free(dh->q);
+    dh->q = q;
+  }
+
+  if (g != NULL) {
+    BN_free(dh->g);
+    dh->g = g;
+  }
+
+  return 1;
+}
+
+int DH_generate_parameters_ex(DH *dh, int prime_bits, int generator, BN_GENCB *cb) {
+  // We generate DH parameters as follows
+  // find a prime q which is prime_bits/2 bits long.
+  // p=(2*q)+1 or (p-1)/2 = q
+  // For this case, g is a generator if
+  // g^((p-1)/q) mod p != 1 for values of q which are the factors of p-1.
+  // Since the factors of p-1 are q and 2, we just need to check
+  // g^2 mod p != 1 and g^q mod p != 1.
+  //
+  // Having said all that,
+  // there is another special case method for the generators 2, 3 and 5.
+  // for 2, p mod 24 == 11
+  // for 3, p mod 12 == 5  <<<<< does not work for safe primes.
+  // for 5, p mod 10 == 3 or 7
+  //
+  // Thanks to Phil Karn <karn@qualcomm.com> for the pointers about the
+  // special generators and for answering some of my questions.
+  //
+  // I've implemented the second simple method :-).
+  // Since DH should be using a safe prime (both p and q are prime),
+  // this generator function can take a very very long time to run.
+
+  // Actually there is no reason to insist that 'generator' be a generator.
+  // It's just as OK (and in some sense better) to use a generator of the
+  // order-q subgroup.
+
+  BIGNUM *t1, *t2;
+  int g, ok = 0;
+  BN_CTX *ctx = NULL;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  t2 = BN_CTX_get(ctx);
+  if (t1 == NULL || t2 == NULL) {
+    goto err;
+  }
+
+  // Make sure |dh| has the necessary elements
+  if (dh->p == NULL) {
+    dh->p = BN_new();
+    if (dh->p == NULL) {
+      goto err;
+    }
+  }
+  if (dh->g == NULL) {
+    dh->g = BN_new();
+    if (dh->g == NULL) {
+      goto err;
+    }
+  }
+
+  if (generator <= 1) {
+    OPENSSL_PUT_ERROR(DH, DH_R_BAD_GENERATOR);
+    goto err;
+  }
+  if (generator == DH_GENERATOR_2) {
+    if (!BN_set_word(t1, 24)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 11)) {
+      goto err;
+    }
+    g = 2;
+  } else if (generator == DH_GENERATOR_5) {
+    if (!BN_set_word(t1, 10)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 3)) {
+      goto err;
+    }
+    // BN_set_word(t3,7); just have to miss
+    // out on these ones :-(
+    g = 5;
+  } else {
+    // in the general case, don't worry if 'generator' is a
+    // generator or not: since we are using safe primes,
+    // it will generate either an order-q or an order-2q group,
+    // which both is OK
+    if (!BN_set_word(t1, 2)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 1)) {
+      goto err;
+    }
+    g = generator;
+  }
+
+  if (!BN_generate_prime_ex(dh->p, prime_bits, 1, t1, t2, cb)) {
+    goto err;
+  }
+  if (!BN_GENCB_call(cb, 3, 0)) {
+    goto err;
+  }
+  if (!BN_set_word(dh->g, g)) {
+    goto err;
+  }
+  ok = 1;
+
+err:
+  if (!ok) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+  }
+
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ok;
+}
+
+int DH_generate_key(DH *dh) {
+  int ok = 0;
+  int generate_new_key = 0;
+  BN_CTX *ctx = NULL;
+  BIGNUM *pub_key = NULL, *priv_key = NULL;
+
+  if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DH, DH_R_MODULUS_TOO_LARGE);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  if (dh->priv_key == NULL) {
+    priv_key = BN_new();
+    if (priv_key == NULL) {
+      goto err;
+    }
+    generate_new_key = 1;
+  } else {
+    priv_key = dh->priv_key;
+  }
+
+  if (dh->pub_key == NULL) {
+    pub_key = BN_new();
+    if (pub_key == NULL) {
+      goto err;
+    }
+  } else {
+    pub_key = dh->pub_key;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dh->method_mont_p, &dh->method_mont_p_lock,
+                              dh->p, ctx)) {
+    goto err;
+  }
+
+  if (generate_new_key) {
+    if (dh->q) {
+      if (!BN_rand_range_ex(priv_key, 2, dh->q)) {
+        goto err;
+      }
+    } else {
+      // secret exponent length
+      unsigned priv_bits = dh->priv_length;
+      if (priv_bits == 0) {
+        const unsigned p_bits = BN_num_bits(dh->p);
+        if (p_bits == 0) {
+          goto err;
+        }
+
+        priv_bits = p_bits - 1;
+      }
+
+      if (!BN_rand(priv_key, priv_bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_mod_exp_mont_consttime(pub_key, dh->g, priv_key, dh->p, ctx,
+                                 dh->method_mont_p)) {
+    goto err;
+  }
+
+  dh->pub_key = pub_key;
+  dh->priv_key = priv_key;
+  ok = 1;
+
+err:
+  if (ok != 1) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+  }
+
+  if (dh->pub_key == NULL) {
+    BN_free(pub_key);
+  }
+  if (dh->priv_key == NULL) {
+    BN_free(priv_key);
+  }
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int DH_compute_key(unsigned char *out, const BIGNUM *peers_key, DH *dh) {
+  BN_CTX *ctx = NULL;
+  BIGNUM *shared_key;
+  int ret = -1;
+  int check_result;
+
+  if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DH, DH_R_MODULUS_TOO_LARGE);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  shared_key = BN_CTX_get(ctx);
+  if (shared_key == NULL) {
+    goto err;
+  }
+
+  if (dh->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(DH, DH_R_NO_PRIVATE_VALUE);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dh->method_mont_p, &dh->method_mont_p_lock,
+                              dh->p, ctx)) {
+    goto err;
+  }
+
+  if (!DH_check_pub_key(dh, peers_key, &check_result) || check_result) {
+    OPENSSL_PUT_ERROR(DH, DH_R_INVALID_PUBKEY);
+    goto err;
+  }
+
+  if (!BN_mod_exp_mont_consttime(shared_key, peers_key, dh->priv_key, dh->p,
+                                 ctx, dh->method_mont_p)) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = BN_bn2bin(shared_key, out);
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  return ret;
+}
+
+int DH_size(const DH *dh) { return BN_num_bytes(dh->p); }
+
+unsigned DH_num_bits(const DH *dh) { return BN_num_bits(dh->p); }
+
+int DH_up_ref(DH *dh) {
+  CRYPTO_refcount_inc(&dh->references);
+  return 1;
+}
+
+static int int_dh_bn_cpy(BIGNUM **dst, const BIGNUM *src) {
+  BIGNUM *a = NULL;
+
+  if (src) {
+    a = BN_dup(src);
+    if (!a) {
+      return 0;
+    }
+  }
+
+  BN_free(*dst);
+  *dst = a;
+  return 1;
+}
+
+static int int_dh_param_copy(DH *to, const DH *from, int is_x942) {
+  if (is_x942 == -1) {
+    is_x942 = !!from->q;
+  }
+  if (!int_dh_bn_cpy(&to->p, from->p) ||
+      !int_dh_bn_cpy(&to->g, from->g)) {
+    return 0;
+  }
+
+  if (!is_x942) {
+    return 1;
+  }
+
+  if (!int_dh_bn_cpy(&to->q, from->q) ||
+      !int_dh_bn_cpy(&to->j, from->j)) {
+    return 0;
+  }
+
+  OPENSSL_free(to->seed);
+  to->seed = NULL;
+  to->seedlen = 0;
+
+  if (from->seed) {
+    to->seed = OPENSSL_memdup(from->seed, from->seedlen);
+    if (!to->seed) {
+      return 0;
+    }
+    to->seedlen = from->seedlen;
+  }
+
+  return 1;
+}
+
+DH *DHparams_dup(const DH *dh) {
+  DH *ret = DH_new();
+  if (!ret) {
+    return NULL;
+  }
+
+  if (!int_dh_param_copy(ret, dh, -1)) {
+    DH_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                        CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int DH_set_ex_data(DH *d, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
+}
+
+void *DH_get_ex_data(DH *d, int idx) {
+  return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c.grpc_back
new file mode 100644
index 0000000..68d710d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh.c.grpc_back	
@@ -0,0 +1,518 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/dh.h>
+
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/ex_data.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+
+#define OPENSSL_DH_MAX_MODULUS_BITS 10000
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+DH *DH_new(void) {
+  DH *dh = OPENSSL_malloc(sizeof(DH));
+  if (dh == NULL) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(dh, 0, sizeof(DH));
+
+  CRYPTO_MUTEX_init(&dh->method_mont_p_lock);
+
+  dh->references = 1;
+  CRYPTO_new_ex_data(&dh->ex_data);
+
+  return dh;
+}
+
+void DH_free(DH *dh) {
+  if (dh == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&dh->references)) {
+    return;
+  }
+
+  CRYPTO_free_ex_data(&g_ex_data_class, dh, &dh->ex_data);
+
+  BN_MONT_CTX_free(dh->method_mont_p);
+  BN_clear_free(dh->p);
+  BN_clear_free(dh->g);
+  BN_clear_free(dh->q);
+  BN_clear_free(dh->j);
+  OPENSSL_free(dh->seed);
+  BN_clear_free(dh->counter);
+  BN_clear_free(dh->pub_key);
+  BN_clear_free(dh->priv_key);
+  CRYPTO_MUTEX_cleanup(&dh->method_mont_p_lock);
+
+  OPENSSL_free(dh);
+}
+
+void DH_get0_key(const DH *dh, const BIGNUM **out_pub_key,
+                 const BIGNUM **out_priv_key) {
+  if (out_pub_key != NULL) {
+    *out_pub_key = dh->pub_key;
+  }
+  if (out_priv_key != NULL) {
+    *out_priv_key = dh->priv_key;
+  }
+}
+
+int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key) {
+  if (pub_key != NULL) {
+    BN_free(dh->pub_key);
+    dh->pub_key = pub_key;
+  }
+
+  if (priv_key != NULL) {
+    BN_free(dh->priv_key);
+    dh->priv_key = priv_key;
+  }
+
+  return 1;
+}
+
+void DH_get0_pqg(const DH *dh, const BIGNUM **out_p, const BIGNUM **out_q,
+                 const BIGNUM **out_g) {
+  if (out_p != NULL) {
+    *out_p = dh->p;
+  }
+  if (out_q != NULL) {
+    *out_q = dh->q;
+  }
+  if (out_g != NULL) {
+    *out_g = dh->g;
+  }
+}
+
+int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g) {
+  if ((dh->p == NULL && p == NULL) ||
+      (dh->g == NULL && g == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(dh->p);
+    dh->p = p;
+  }
+
+  if (q != NULL) {
+    BN_free(dh->q);
+    dh->q = q;
+  }
+
+  if (g != NULL) {
+    BN_free(dh->g);
+    dh->g = g;
+  }
+
+  return 1;
+}
+
+int DH_generate_parameters_ex(DH *dh, int prime_bits, int generator, BN_GENCB *cb) {
+  // We generate DH parameters as follows
+  // find a prime q which is prime_bits/2 bits long.
+  // p=(2*q)+1 or (p-1)/2 = q
+  // For this case, g is a generator if
+  // g^((p-1)/q) mod p != 1 for values of q which are the factors of p-1.
+  // Since the factors of p-1 are q and 2, we just need to check
+  // g^2 mod p != 1 and g^q mod p != 1.
+  //
+  // Having said all that,
+  // there is another special case method for the generators 2, 3 and 5.
+  // for 2, p mod 24 == 11
+  // for 3, p mod 12 == 5  <<<<< does not work for safe primes.
+  // for 5, p mod 10 == 3 or 7
+  //
+  // Thanks to Phil Karn <karn@qualcomm.com> for the pointers about the
+  // special generators and for answering some of my questions.
+  //
+  // I've implemented the second simple method :-).
+  // Since DH should be using a safe prime (both p and q are prime),
+  // this generator function can take a very very long time to run.
+
+  // Actually there is no reason to insist that 'generator' be a generator.
+  // It's just as OK (and in some sense better) to use a generator of the
+  // order-q subgroup.
+
+  BIGNUM *t1, *t2;
+  int g, ok = 0;
+  BN_CTX *ctx = NULL;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  t2 = BN_CTX_get(ctx);
+  if (t1 == NULL || t2 == NULL) {
+    goto err;
+  }
+
+  // Make sure |dh| has the necessary elements
+  if (dh->p == NULL) {
+    dh->p = BN_new();
+    if (dh->p == NULL) {
+      goto err;
+    }
+  }
+  if (dh->g == NULL) {
+    dh->g = BN_new();
+    if (dh->g == NULL) {
+      goto err;
+    }
+  }
+
+  if (generator <= 1) {
+    OPENSSL_PUT_ERROR(DH, DH_R_BAD_GENERATOR);
+    goto err;
+  }
+  if (generator == DH_GENERATOR_2) {
+    if (!BN_set_word(t1, 24)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 11)) {
+      goto err;
+    }
+    g = 2;
+  } else if (generator == DH_GENERATOR_5) {
+    if (!BN_set_word(t1, 10)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 3)) {
+      goto err;
+    }
+    // BN_set_word(t3,7); just have to miss
+    // out on these ones :-(
+    g = 5;
+  } else {
+    // in the general case, don't worry if 'generator' is a
+    // generator or not: since we are using safe primes,
+    // it will generate either an order-q or an order-2q group,
+    // which both is OK
+    if (!BN_set_word(t1, 2)) {
+      goto err;
+    }
+    if (!BN_set_word(t2, 1)) {
+      goto err;
+    }
+    g = generator;
+  }
+
+  if (!BN_generate_prime_ex(dh->p, prime_bits, 1, t1, t2, cb)) {
+    goto err;
+  }
+  if (!BN_GENCB_call(cb, 3, 0)) {
+    goto err;
+  }
+  if (!BN_set_word(dh->g, g)) {
+    goto err;
+  }
+  ok = 1;
+
+err:
+  if (!ok) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+  }
+
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ok;
+}
+
+int DH_generate_key(DH *dh) {
+  int ok = 0;
+  int generate_new_key = 0;
+  BN_CTX *ctx = NULL;
+  BIGNUM *pub_key = NULL, *priv_key = NULL;
+
+  if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DH, DH_R_MODULUS_TOO_LARGE);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  if (dh->priv_key == NULL) {
+    priv_key = BN_new();
+    if (priv_key == NULL) {
+      goto err;
+    }
+    generate_new_key = 1;
+  } else {
+    priv_key = dh->priv_key;
+  }
+
+  if (dh->pub_key == NULL) {
+    pub_key = BN_new();
+    if (pub_key == NULL) {
+      goto err;
+    }
+  } else {
+    pub_key = dh->pub_key;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dh->method_mont_p, &dh->method_mont_p_lock,
+                              dh->p, ctx)) {
+    goto err;
+  }
+
+  if (generate_new_key) {
+    if (dh->q) {
+      if (!BN_rand_range_ex(priv_key, 2, dh->q)) {
+        goto err;
+      }
+    } else {
+      // secret exponent length
+      unsigned priv_bits = dh->priv_length;
+      if (priv_bits == 0) {
+        const unsigned p_bits = BN_num_bits(dh->p);
+        if (p_bits == 0) {
+          goto err;
+        }
+
+        priv_bits = p_bits - 1;
+      }
+
+      if (!BN_rand(priv_key, priv_bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_mod_exp_mont_consttime(pub_key, dh->g, priv_key, dh->p, ctx,
+                                 dh->method_mont_p)) {
+    goto err;
+  }
+
+  dh->pub_key = pub_key;
+  dh->priv_key = priv_key;
+  ok = 1;
+
+err:
+  if (ok != 1) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+  }
+
+  if (dh->pub_key == NULL) {
+    BN_free(pub_key);
+  }
+  if (dh->priv_key == NULL) {
+    BN_free(priv_key);
+  }
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int DH_compute_key(unsigned char *out, const BIGNUM *peers_key, DH *dh) {
+  BN_CTX *ctx = NULL;
+  BIGNUM *shared_key;
+  int ret = -1;
+  int check_result;
+
+  if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DH, DH_R_MODULUS_TOO_LARGE);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  shared_key = BN_CTX_get(ctx);
+  if (shared_key == NULL) {
+    goto err;
+  }
+
+  if (dh->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(DH, DH_R_NO_PRIVATE_VALUE);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dh->method_mont_p, &dh->method_mont_p_lock,
+                              dh->p, ctx)) {
+    goto err;
+  }
+
+  if (!DH_check_pub_key(dh, peers_key, &check_result) || check_result) {
+    OPENSSL_PUT_ERROR(DH, DH_R_INVALID_PUBKEY);
+    goto err;
+  }
+
+  if (!BN_mod_exp_mont_consttime(shared_key, peers_key, dh->priv_key, dh->p,
+                                 ctx, dh->method_mont_p)) {
+    OPENSSL_PUT_ERROR(DH, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = BN_bn2bin(shared_key, out);
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  return ret;
+}
+
+int DH_size(const DH *dh) { return BN_num_bytes(dh->p); }
+
+unsigned DH_num_bits(const DH *dh) { return BN_num_bits(dh->p); }
+
+int DH_up_ref(DH *dh) {
+  CRYPTO_refcount_inc(&dh->references);
+  return 1;
+}
+
+static int int_dh_bn_cpy(BIGNUM **dst, const BIGNUM *src) {
+  BIGNUM *a = NULL;
+
+  if (src) {
+    a = BN_dup(src);
+    if (!a) {
+      return 0;
+    }
+  }
+
+  BN_free(*dst);
+  *dst = a;
+  return 1;
+}
+
+static int int_dh_param_copy(DH *to, const DH *from, int is_x942) {
+  if (is_x942 == -1) {
+    is_x942 = !!from->q;
+  }
+  if (!int_dh_bn_cpy(&to->p, from->p) ||
+      !int_dh_bn_cpy(&to->g, from->g)) {
+    return 0;
+  }
+
+  if (!is_x942) {
+    return 1;
+  }
+
+  if (!int_dh_bn_cpy(&to->q, from->q) ||
+      !int_dh_bn_cpy(&to->j, from->j)) {
+    return 0;
+  }
+
+  OPENSSL_free(to->seed);
+  to->seed = NULL;
+  to->seedlen = 0;
+
+  if (from->seed) {
+    to->seed = OPENSSL_memdup(from->seed, from->seedlen);
+    if (!to->seed) {
+      return 0;
+    }
+    to->seedlen = from->seedlen;
+  }
+
+  return 1;
+}
+
+DH *DHparams_dup(const DH *dh) {
+  DH *ret = DH_new();
+  if (!ret) {
+    return NULL;
+  }
+
+  if (!int_dh_param_copy(ret, dh, -1)) {
+    DH_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                        CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int DH_set_ex_data(DH *d, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
+}
+
+void *DH_get_ex_data(DH *d, int idx) {
+  return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c
new file mode 100644
index 0000000..2f40cd4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c	
@@ -0,0 +1,160 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/dh.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+
+#include "../bytestring/internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // A DH object may be missing some components.
+    OPENSSL_PUT_ERROR(DH, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+DH *DH_parse_parameters(CBS *cbs) {
+  DH *ret = DH_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->g)) {
+    goto err;
+  }
+
+  uint64_t priv_length;
+  if (CBS_len(&child) != 0) {
+    if (!CBS_get_asn1_uint64(&child, &priv_length) ||
+        priv_length > UINT_MAX) {
+      goto err;
+    }
+    ret->priv_length = (unsigned)priv_length;
+  }
+
+  if (CBS_len(&child) != 0) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  OPENSSL_PUT_ERROR(DH, DH_R_DECODE_ERROR);
+  DH_free(ret);
+  return NULL;
+}
+
+int DH_marshal_parameters(CBB *cbb, const DH *dh) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dh->p) ||
+      !marshal_integer(&child, dh->g) ||
+      (dh->priv_length != 0 &&
+       !CBB_add_asn1_uint64(&child, dh->priv_length)) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DH, DH_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DH *d2i_DHparams(DH **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DH *ret = DH_parse_parameters(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DH_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DHparams(const DH *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DH_marshal_parameters(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c.grpc_back
new file mode 100644
index 0000000..9d32180
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/dh_asn1.c.grpc_back	
@@ -0,0 +1,160 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/dh.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+
+#include "../bytestring/internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // A DH object may be missing some components.
+    OPENSSL_PUT_ERROR(DH, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+DH *DH_parse_parameters(CBS *cbs) {
+  DH *ret = DH_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->g)) {
+    goto err;
+  }
+
+  uint64_t priv_length;
+  if (CBS_len(&child) != 0) {
+    if (!CBS_get_asn1_uint64(&child, &priv_length) ||
+        priv_length > UINT_MAX) {
+      goto err;
+    }
+    ret->priv_length = (unsigned)priv_length;
+  }
+
+  if (CBS_len(&child) != 0) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  OPENSSL_PUT_ERROR(DH, DH_R_DECODE_ERROR);
+  DH_free(ret);
+  return NULL;
+}
+
+int DH_marshal_parameters(CBB *cbb, const DH *dh) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dh->p) ||
+      !marshal_integer(&child, dh->g) ||
+      (dh->priv_length != 0 &&
+       !CBB_add_asn1_uint64(&child, dh->priv_length)) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DH, DH_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DH *d2i_DHparams(DH **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DH *ret = DH_parse_parameters(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DH_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DHparams(const DH *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DH_marshal_parameters(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c
new file mode 100644
index 0000000..c583653
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c	
@@ -0,0 +1,93 @@
+/* ====================================================================
+ * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/dh.h>
+
+#include <openssl_grpc/bn.h>
+
+#include "../fipsmodule/bn/internal.h"
+
+
+BIGNUM *BN_get_rfc3526_prime_1536(BIGNUM *ret) {
+  static const BN_ULONG kPrime1536Data[] = {
+      TOBN(0xffffffff, 0xffffffff), TOBN(0xf1746c08, 0xca237327),
+      TOBN(0x670c354e, 0x4abc9804), TOBN(0x9ed52907, 0x7096966d),
+      TOBN(0x1c62f356, 0x208552bb), TOBN(0x83655d23, 0xdca3ad96),
+      TOBN(0x69163fa8, 0xfd24cf5f), TOBN(0x98da4836, 0x1c55d39a),
+      TOBN(0xc2007cb8, 0xa163bf05), TOBN(0x49286651, 0xece45b3d),
+      TOBN(0xae9f2411, 0x7c4b1fe6), TOBN(0xee386bfb, 0x5a899fa5),
+      TOBN(0x0bff5cb6, 0xf406b7ed), TOBN(0xf44c42e9, 0xa637ed6b),
+      TOBN(0xe485b576, 0x625e7ec6), TOBN(0x4fe1356d, 0x6d51c245),
+      TOBN(0x302b0a6d, 0xf25f1437), TOBN(0xef9519b3, 0xcd3a431b),
+      TOBN(0x514a0879, 0x8e3404dd), TOBN(0x020bbea6, 0x3b139b22),
+      TOBN(0x29024e08, 0x8a67cc74), TOBN(0xc4c6628b, 0x80dc1cd1),
+      TOBN(0xc90fdaa2, 0x2168c234), TOBN(0xffffffff, 0xffffffff),
+  };
+
+  static const BIGNUM kPrime1536BN = STATIC_BIGNUM(kPrime1536Data);
+
+  BIGNUM *alloc = NULL;
+  if (ret == NULL) {
+    alloc = BN_new();
+    if (alloc == NULL) {
+      return NULL;
+    }
+    ret = alloc;
+  }
+
+  if (!BN_copy(ret, &kPrime1536BN)) {
+    BN_free(alloc);
+    return NULL;
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c.grpc_back
new file mode 100644
index 0000000..3336029
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dh/params.c.grpc_back	
@@ -0,0 +1,93 @@
+/* ====================================================================
+ * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/dh.h>
+
+#include <openssl/bn.h>
+
+#include "../fipsmodule/bn/internal.h"
+
+
+BIGNUM *BN_get_rfc3526_prime_1536(BIGNUM *ret) {
+  static const BN_ULONG kPrime1536Data[] = {
+      TOBN(0xffffffff, 0xffffffff), TOBN(0xf1746c08, 0xca237327),
+      TOBN(0x670c354e, 0x4abc9804), TOBN(0x9ed52907, 0x7096966d),
+      TOBN(0x1c62f356, 0x208552bb), TOBN(0x83655d23, 0xdca3ad96),
+      TOBN(0x69163fa8, 0xfd24cf5f), TOBN(0x98da4836, 0x1c55d39a),
+      TOBN(0xc2007cb8, 0xa163bf05), TOBN(0x49286651, 0xece45b3d),
+      TOBN(0xae9f2411, 0x7c4b1fe6), TOBN(0xee386bfb, 0x5a899fa5),
+      TOBN(0x0bff5cb6, 0xf406b7ed), TOBN(0xf44c42e9, 0xa637ed6b),
+      TOBN(0xe485b576, 0x625e7ec6), TOBN(0x4fe1356d, 0x6d51c245),
+      TOBN(0x302b0a6d, 0xf25f1437), TOBN(0xef9519b3, 0xcd3a431b),
+      TOBN(0x514a0879, 0x8e3404dd), TOBN(0x020bbea6, 0x3b139b22),
+      TOBN(0x29024e08, 0x8a67cc74), TOBN(0xc4c6628b, 0x80dc1cd1),
+      TOBN(0xc90fdaa2, 0x2168c234), TOBN(0xffffffff, 0xffffffff),
+  };
+
+  static const BIGNUM kPrime1536BN = STATIC_BIGNUM(kPrime1536Data);
+
+  BIGNUM *alloc = NULL;
+  if (ret == NULL) {
+    alloc = BN_new();
+    if (alloc == NULL) {
+      return NULL;
+    }
+    ret = alloc;
+  }
+
+  if (!BN_copy(ret, &kPrime1536BN)) {
+    BN_free(alloc);
+    return NULL;
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c
new file mode 100644
index 0000000..1f49263
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c	
@@ -0,0 +1,240 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/digest.h>
+
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/nid.h>
+
+#include "../internal.h"
+
+
+struct nid_to_digest {
+  int nid;
+  const EVP_MD* (*md_func)(void);
+  const char *short_name;
+  const char *long_name;
+};
+
+static const struct nid_to_digest nid_to_digest_mapping[] = {
+    {NID_md4, EVP_md4, SN_md4, LN_md4},
+    {NID_md5, EVP_md5, SN_md5, LN_md5},
+    {NID_sha1, EVP_sha1, SN_sha1, LN_sha1},
+    {NID_sha224, EVP_sha224, SN_sha224, LN_sha224},
+    {NID_sha256, EVP_sha256, SN_sha256, LN_sha256},
+    {NID_sha384, EVP_sha384, SN_sha384, LN_sha384},
+    {NID_sha512, EVP_sha512, SN_sha512, LN_sha512},
+    {NID_md5_sha1, EVP_md5_sha1, SN_md5_sha1, LN_md5_sha1},
+    // As a remnant of signing |EVP_MD|s, OpenSSL returned the corresponding
+    // hash function when given a signature OID. To avoid unintended lax parsing
+    // of hash OIDs, this is no longer supported for lookup by OID or NID.
+    // Node.js, however, exposes |EVP_get_digestbyname|'s full behavior to
+    // consumers so we retain it there.
+    {NID_undef, EVP_sha1, SN_dsaWithSHA, LN_dsaWithSHA},
+    {NID_undef, EVP_sha1, SN_dsaWithSHA1, LN_dsaWithSHA1},
+    {NID_undef, EVP_sha1, SN_ecdsa_with_SHA1, NULL},
+    {NID_undef, EVP_md5, SN_md5WithRSAEncryption, LN_md5WithRSAEncryption},
+    {NID_undef, EVP_sha1, SN_sha1WithRSAEncryption, LN_sha1WithRSAEncryption},
+    {NID_undef, EVP_sha224, SN_sha224WithRSAEncryption,
+     LN_sha224WithRSAEncryption},
+    {NID_undef, EVP_sha256, SN_sha256WithRSAEncryption,
+     LN_sha256WithRSAEncryption},
+    {NID_undef, EVP_sha384, SN_sha384WithRSAEncryption,
+     LN_sha384WithRSAEncryption},
+    {NID_undef, EVP_sha512, SN_sha512WithRSAEncryption,
+     LN_sha512WithRSAEncryption},
+};
+
+const EVP_MD* EVP_get_digestbynid(int nid) {
+  if (nid == NID_undef) {
+    // Skip the |NID_undef| entries in |nid_to_digest_mapping|.
+    return NULL;
+  }
+
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+    if (nid_to_digest_mapping[i].nid == nid) {
+      return nid_to_digest_mapping[i].md_func();
+    }
+  }
+
+  return NULL;
+}
+
+static const struct {
+  uint8_t oid[9];
+  uint8_t oid_len;
+  int nid;
+} kMDOIDs[] = {
+  // 1.2.840.113549.2.4
+  { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x04}, 8, NID_md4 },
+  // 1.2.840.113549.2.5
+  { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05}, 8, NID_md5 },
+  // 1.3.14.3.2.26
+  { {0x2b, 0x0e, 0x03, 0x02, 0x1a}, 5, NID_sha1 },
+  // 2.16.840.1.101.3.4.2.1
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01}, 9, NID_sha256 },
+  // 2.16.840.1.101.3.4.2.2
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02}, 9, NID_sha384 },
+  // 2.16.840.1.101.3.4.2.3
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03}, 9, NID_sha512 },
+  // 2.16.840.1.101.3.4.2.4
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04}, 9, NID_sha224 },
+};
+
+static const EVP_MD *cbs_to_md(const CBS *cbs) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+    if (CBS_len(cbs) == kMDOIDs[i].oid_len &&
+        OPENSSL_memcmp(CBS_data(cbs), kMDOIDs[i].oid, kMDOIDs[i].oid_len) ==
+            0) {
+      return EVP_get_digestbynid(kMDOIDs[i].nid);
+    }
+  }
+
+  return NULL;
+}
+
+const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj) {
+  // Handle objects with no corresponding OID.
+  if (obj->nid != NID_undef) {
+    return EVP_get_digestbynid(obj->nid);
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, obj->data, obj->length);
+  return cbs_to_md(&cbs);
+}
+
+const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs) {
+  CBS algorithm, oid;
+  if (!CBS_get_asn1(cbs, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  const EVP_MD *ret = cbs_to_md(&oid);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+    return NULL;
+  }
+
+  // The parameters, if present, must be NULL. Historically, whether the NULL
+  // was included or omitted was not well-specified. When parsing an
+  // AlgorithmIdentifier, we allow both. (Note this code is not used when
+  // verifying RSASSA-PKCS1-v1_5 signatures.)
+  if (CBS_len(&algorithm) > 0) {
+    CBS param;
+    if (!CBS_get_asn1(&algorithm, &param, CBS_ASN1_NULL) ||
+        CBS_len(&param) != 0 ||
+        CBS_len(&algorithm) != 0) {
+      OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
+
+int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md) {
+  CBB algorithm, oid, null;
+  if (!CBB_add_asn1(cbb, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int found = 0;
+  int nid = EVP_MD_type(md);
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+    if (nid == kMDOIDs[i].nid) {
+      if (!CBB_add_bytes(&oid, kMDOIDs[i].oid, kMDOIDs[i].oid_len)) {
+        OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+      found = 1;
+      break;
+    }
+  }
+
+  if (!found) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+    return 0;
+  }
+
+  if (!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+const EVP_MD *EVP_get_digestbyname(const char *name) {
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+    const char *short_name = nid_to_digest_mapping[i].short_name;
+    const char *long_name = nid_to_digest_mapping[i].long_name;
+    if ((short_name && strcmp(short_name, name) == 0) ||
+        (long_name && strcmp(long_name, name) == 0)) {
+      return nid_to_digest_mapping[i].md_func();
+    }
+  }
+
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c.grpc_back
new file mode 100644
index 0000000..4b4bb38
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/digest_extra/digest_extra.c.grpc_back	
@@ -0,0 +1,240 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/digest.h>
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bytestring.h>
+#include <openssl/nid.h>
+
+#include "../internal.h"
+
+
+struct nid_to_digest {
+  int nid;
+  const EVP_MD* (*md_func)(void);
+  const char *short_name;
+  const char *long_name;
+};
+
+static const struct nid_to_digest nid_to_digest_mapping[] = {
+    {NID_md4, EVP_md4, SN_md4, LN_md4},
+    {NID_md5, EVP_md5, SN_md5, LN_md5},
+    {NID_sha1, EVP_sha1, SN_sha1, LN_sha1},
+    {NID_sha224, EVP_sha224, SN_sha224, LN_sha224},
+    {NID_sha256, EVP_sha256, SN_sha256, LN_sha256},
+    {NID_sha384, EVP_sha384, SN_sha384, LN_sha384},
+    {NID_sha512, EVP_sha512, SN_sha512, LN_sha512},
+    {NID_md5_sha1, EVP_md5_sha1, SN_md5_sha1, LN_md5_sha1},
+    // As a remnant of signing |EVP_MD|s, OpenSSL returned the corresponding
+    // hash function when given a signature OID. To avoid unintended lax parsing
+    // of hash OIDs, this is no longer supported for lookup by OID or NID.
+    // Node.js, however, exposes |EVP_get_digestbyname|'s full behavior to
+    // consumers so we retain it there.
+    {NID_undef, EVP_sha1, SN_dsaWithSHA, LN_dsaWithSHA},
+    {NID_undef, EVP_sha1, SN_dsaWithSHA1, LN_dsaWithSHA1},
+    {NID_undef, EVP_sha1, SN_ecdsa_with_SHA1, NULL},
+    {NID_undef, EVP_md5, SN_md5WithRSAEncryption, LN_md5WithRSAEncryption},
+    {NID_undef, EVP_sha1, SN_sha1WithRSAEncryption, LN_sha1WithRSAEncryption},
+    {NID_undef, EVP_sha224, SN_sha224WithRSAEncryption,
+     LN_sha224WithRSAEncryption},
+    {NID_undef, EVP_sha256, SN_sha256WithRSAEncryption,
+     LN_sha256WithRSAEncryption},
+    {NID_undef, EVP_sha384, SN_sha384WithRSAEncryption,
+     LN_sha384WithRSAEncryption},
+    {NID_undef, EVP_sha512, SN_sha512WithRSAEncryption,
+     LN_sha512WithRSAEncryption},
+};
+
+const EVP_MD* EVP_get_digestbynid(int nid) {
+  if (nid == NID_undef) {
+    // Skip the |NID_undef| entries in |nid_to_digest_mapping|.
+    return NULL;
+  }
+
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+    if (nid_to_digest_mapping[i].nid == nid) {
+      return nid_to_digest_mapping[i].md_func();
+    }
+  }
+
+  return NULL;
+}
+
+static const struct {
+  uint8_t oid[9];
+  uint8_t oid_len;
+  int nid;
+} kMDOIDs[] = {
+  // 1.2.840.113549.2.4
+  { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x04}, 8, NID_md4 },
+  // 1.2.840.113549.2.5
+  { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05}, 8, NID_md5 },
+  // 1.3.14.3.2.26
+  { {0x2b, 0x0e, 0x03, 0x02, 0x1a}, 5, NID_sha1 },
+  // 2.16.840.1.101.3.4.2.1
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01}, 9, NID_sha256 },
+  // 2.16.840.1.101.3.4.2.2
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02}, 9, NID_sha384 },
+  // 2.16.840.1.101.3.4.2.3
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03}, 9, NID_sha512 },
+  // 2.16.840.1.101.3.4.2.4
+  { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04}, 9, NID_sha224 },
+};
+
+static const EVP_MD *cbs_to_md(const CBS *cbs) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+    if (CBS_len(cbs) == kMDOIDs[i].oid_len &&
+        OPENSSL_memcmp(CBS_data(cbs), kMDOIDs[i].oid, kMDOIDs[i].oid_len) ==
+            0) {
+      return EVP_get_digestbynid(kMDOIDs[i].nid);
+    }
+  }
+
+  return NULL;
+}
+
+const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj) {
+  // Handle objects with no corresponding OID.
+  if (obj->nid != NID_undef) {
+    return EVP_get_digestbynid(obj->nid);
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, obj->data, obj->length);
+  return cbs_to_md(&cbs);
+}
+
+const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs) {
+  CBS algorithm, oid;
+  if (!CBS_get_asn1(cbs, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  const EVP_MD *ret = cbs_to_md(&oid);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+    return NULL;
+  }
+
+  // The parameters, if present, must be NULL. Historically, whether the NULL
+  // was included or omitted was not well-specified. When parsing an
+  // AlgorithmIdentifier, we allow both. (Note this code is not used when
+  // verifying RSASSA-PKCS1-v1_5 signatures.)
+  if (CBS_len(&algorithm) > 0) {
+    CBS param;
+    if (!CBS_get_asn1(&algorithm, &param, CBS_ASN1_NULL) ||
+        CBS_len(&param) != 0 ||
+        CBS_len(&algorithm) != 0) {
+      OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
+
+int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md) {
+  CBB algorithm, oid, null;
+  if (!CBB_add_asn1(cbb, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int found = 0;
+  int nid = EVP_MD_type(md);
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+    if (nid == kMDOIDs[i].nid) {
+      if (!CBB_add_bytes(&oid, kMDOIDs[i].oid, kMDOIDs[i].oid_len)) {
+        OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+      found = 1;
+      break;
+    }
+  }
+
+  if (!found) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+    return 0;
+  }
+
+  if (!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+const EVP_MD *EVP_get_digestbyname(const char *name) {
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+    const char *short_name = nid_to_digest_mapping[i].short_name;
+    const char *long_name = nid_to_digest_mapping[i].long_name;
+    if ((short_name && strcmp(short_name, name) == 0) ||
+        (long_name && strcmp(long_name, name) == 0)) {
+      return nid_to_digest_mapping[i].md_func();
+    }
+  }
+
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c
new file mode 100644
index 0000000..da0931d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c	
@@ -0,0 +1,970 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#include <openssl_grpc/dsa.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/dh.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/thread.h>
+
+#include "../fipsmodule/bn/internal.h"
+#include "../internal.h"
+
+
+#define OPENSSL_DSA_MAX_MODULUS_BITS 10000
+
+// Primality test according to FIPS PUB 186[-1], Appendix 2.1: 50 rounds of
+// Miller-Rabin.
+#define DSS_prime_checks 50
+
+static int dsa_sign_setup(const DSA *dsa, BN_CTX *ctx_in, BIGNUM **out_kinv,
+                          BIGNUM **out_r);
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+DSA *DSA_new(void) {
+  DSA *dsa = OPENSSL_malloc(sizeof(DSA));
+  if (dsa == NULL) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(dsa, 0, sizeof(DSA));
+
+  dsa->references = 1;
+
+  CRYPTO_MUTEX_init(&dsa->method_mont_lock);
+  CRYPTO_new_ex_data(&dsa->ex_data);
+
+  return dsa;
+}
+
+void DSA_free(DSA *dsa) {
+  if (dsa == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&dsa->references)) {
+    return;
+  }
+
+  CRYPTO_free_ex_data(&g_ex_data_class, dsa, &dsa->ex_data);
+
+  BN_clear_free(dsa->p);
+  BN_clear_free(dsa->q);
+  BN_clear_free(dsa->g);
+  BN_clear_free(dsa->pub_key);
+  BN_clear_free(dsa->priv_key);
+  BN_MONT_CTX_free(dsa->method_mont_p);
+  BN_MONT_CTX_free(dsa->method_mont_q);
+  CRYPTO_MUTEX_cleanup(&dsa->method_mont_lock);
+  OPENSSL_free(dsa);
+}
+
+int DSA_up_ref(DSA *dsa) {
+  CRYPTO_refcount_inc(&dsa->references);
+  return 1;
+}
+
+void DSA_get0_key(const DSA *dsa, const BIGNUM **out_pub_key,
+                  const BIGNUM **out_priv_key) {
+  if (out_pub_key != NULL) {
+    *out_pub_key = dsa->pub_key;
+  }
+  if (out_priv_key != NULL) {
+    *out_priv_key = dsa->priv_key;
+  }
+}
+
+void DSA_get0_pqg(const DSA *dsa, const BIGNUM **out_p, const BIGNUM **out_q,
+                  const BIGNUM **out_g) {
+  if (out_p != NULL) {
+    *out_p = dsa->p;
+  }
+  if (out_q != NULL) {
+    *out_q = dsa->q;
+  }
+  if (out_g != NULL) {
+    *out_g = dsa->g;
+  }
+}
+
+int DSA_set0_key(DSA *dsa, BIGNUM *pub_key, BIGNUM *priv_key) {
+  if (dsa->pub_key == NULL && pub_key == NULL) {
+    return 0;
+  }
+
+  if (pub_key != NULL) {
+    BN_free(dsa->pub_key);
+    dsa->pub_key = pub_key;
+  }
+  if (priv_key != NULL) {
+    BN_free(dsa->priv_key);
+    dsa->priv_key = priv_key;
+  }
+
+  return 1;
+}
+
+int DSA_set0_pqg(DSA *dsa, BIGNUM *p, BIGNUM *q, BIGNUM *g) {
+  if ((dsa->p == NULL && p == NULL) ||
+      (dsa->q == NULL && q == NULL) ||
+      (dsa->g == NULL && g == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(dsa->p);
+    dsa->p = p;
+  }
+  if (q != NULL) {
+    BN_free(dsa->q);
+    dsa->q = q;
+  }
+  if (g != NULL) {
+    BN_free(dsa->g);
+    dsa->g = g;
+  }
+
+  return 1;
+}
+
+int DSA_generate_parameters_ex(DSA *dsa, unsigned bits, const uint8_t *seed_in,
+                               size_t seed_len, int *out_counter,
+                               unsigned long *out_h, BN_GENCB *cb) {
+  int ok = 0;
+  unsigned char seed[SHA256_DIGEST_LENGTH];
+  unsigned char md[SHA256_DIGEST_LENGTH];
+  unsigned char buf[SHA256_DIGEST_LENGTH], buf2[SHA256_DIGEST_LENGTH];
+  BIGNUM *r0, *W, *X, *c, *test;
+  BIGNUM *g = NULL, *q = NULL, *p = NULL;
+  BN_MONT_CTX *mont = NULL;
+  int k, n = 0, m = 0;
+  unsigned i;
+  int counter = 0;
+  int r = 0;
+  BN_CTX *ctx = NULL;
+  unsigned int h = 2;
+  unsigned qsize;
+  const EVP_MD *evpmd;
+
+  evpmd = (bits >= 2048) ? EVP_sha256() : EVP_sha1();
+  qsize = EVP_MD_size(evpmd);
+
+  if (bits < 512) {
+    bits = 512;
+  }
+
+  bits = (bits + 63) / 64 * 64;
+
+  if (seed_in != NULL) {
+    if (seed_len < (size_t)qsize) {
+      return 0;
+    }
+    if (seed_len > (size_t)qsize) {
+      // Only consume as much seed as is expected.
+      seed_len = qsize;
+    }
+    OPENSSL_memcpy(seed, seed_in, seed_len);
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+
+  r0 = BN_CTX_get(ctx);
+  g = BN_CTX_get(ctx);
+  W = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  X = BN_CTX_get(ctx);
+  c = BN_CTX_get(ctx);
+  p = BN_CTX_get(ctx);
+  test = BN_CTX_get(ctx);
+
+  if (test == NULL || !BN_lshift(test, BN_value_one(), bits - 1)) {
+    goto err;
+  }
+
+  for (;;) {
+    // Find q.
+    for (;;) {
+      // step 1
+      if (!BN_GENCB_call(cb, BN_GENCB_GENERATED, m++)) {
+        goto err;
+      }
+
+      int use_random_seed = (seed_in == NULL);
+      if (use_random_seed) {
+        if (!RAND_bytes(seed, qsize)) {
+          goto err;
+        }
+      } else {
+        // If we come back through, use random seed next time.
+        seed_in = NULL;
+      }
+      OPENSSL_memcpy(buf, seed, qsize);
+      OPENSSL_memcpy(buf2, seed, qsize);
+      // precompute "SEED + 1" for step 7:
+      for (i = qsize - 1; i < qsize; i--) {
+        buf[i]++;
+        if (buf[i] != 0) {
+          break;
+        }
+      }
+
+      // step 2
+      if (!EVP_Digest(seed, qsize, md, NULL, evpmd, NULL) ||
+          !EVP_Digest(buf, qsize, buf2, NULL, evpmd, NULL)) {
+        goto err;
+      }
+      for (i = 0; i < qsize; i++) {
+        md[i] ^= buf2[i];
+      }
+
+      // step 3
+      md[0] |= 0x80;
+      md[qsize - 1] |= 0x01;
+      if (!BN_bin2bn(md, qsize, q)) {
+        goto err;
+      }
+
+      // step 4
+      r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx, use_random_seed, cb);
+      if (r > 0) {
+        break;
+      }
+      if (r != 0) {
+        goto err;
+      }
+
+      // do a callback call
+      // step 5
+    }
+
+    if (!BN_GENCB_call(cb, 2, 0) || !BN_GENCB_call(cb, 3, 0)) {
+      goto err;
+    }
+
+    // step 6
+    counter = 0;
+    // "offset = 2"
+
+    n = (bits - 1) / 160;
+
+    for (;;) {
+      if ((counter != 0) && !BN_GENCB_call(cb, BN_GENCB_GENERATED, counter)) {
+        goto err;
+      }
+
+      // step 7
+      BN_zero(W);
+      // now 'buf' contains "SEED + offset - 1"
+      for (k = 0; k <= n; k++) {
+        // obtain "SEED + offset + k" by incrementing:
+        for (i = qsize - 1; i < qsize; i--) {
+          buf[i]++;
+          if (buf[i] != 0) {
+            break;
+          }
+        }
+
+        if (!EVP_Digest(buf, qsize, md, NULL, evpmd, NULL)) {
+          goto err;
+        }
+
+        // step 8
+        if (!BN_bin2bn(md, qsize, r0) ||
+            !BN_lshift(r0, r0, (qsize << 3) * k) ||
+            !BN_add(W, W, r0)) {
+          goto err;
+        }
+      }
+
+      // more of step 8
+      if (!BN_mask_bits(W, bits - 1) ||
+          !BN_copy(X, W) ||
+          !BN_add(X, X, test)) {
+        goto err;
+      }
+
+      // step 9
+      if (!BN_lshift1(r0, q) ||
+          !BN_mod(c, X, r0, ctx) ||
+          !BN_sub(r0, c, BN_value_one()) ||
+          !BN_sub(p, X, r0)) {
+        goto err;
+      }
+
+      // step 10
+      if (BN_cmp(p, test) >= 0) {
+        // step 11
+        r = BN_is_prime_fasttest_ex(p, DSS_prime_checks, ctx, 1, cb);
+        if (r > 0) {
+          goto end;  // found it
+        }
+        if (r != 0) {
+          goto err;
+        }
+      }
+
+      // step 13
+      counter++;
+      // "offset = offset + n + 1"
+
+      // step 14
+      if (counter >= 4096) {
+        break;
+      }
+    }
+  }
+end:
+  if (!BN_GENCB_call(cb, 2, 1)) {
+    goto err;
+  }
+
+  // We now need to generate g
+  // Set r0=(p-1)/q
+  if (!BN_sub(test, p, BN_value_one()) ||
+      !BN_div(r0, NULL, test, q, ctx)) {
+    goto err;
+  }
+
+  mont = BN_MONT_CTX_new_for_modulus(p, ctx);
+  if (mont == NULL ||
+      !BN_set_word(test, h)) {
+    goto err;
+  }
+
+  for (;;) {
+    // g=test^r0%p
+    if (!BN_mod_exp_mont(g, test, r0, p, ctx, mont)) {
+      goto err;
+    }
+    if (!BN_is_one(g)) {
+      break;
+    }
+    if (!BN_add(test, test, BN_value_one())) {
+      goto err;
+    }
+    h++;
+  }
+
+  if (!BN_GENCB_call(cb, 3, 1)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (ok) {
+    BN_free(dsa->p);
+    BN_free(dsa->q);
+    BN_free(dsa->g);
+    dsa->p = BN_dup(p);
+    dsa->q = BN_dup(q);
+    dsa->g = BN_dup(g);
+    if (dsa->p == NULL || dsa->q == NULL || dsa->g == NULL) {
+      ok = 0;
+      goto err;
+    }
+    if (out_counter != NULL) {
+      *out_counter = counter;
+    }
+    if (out_h != NULL) {
+      *out_h = h;
+    }
+  }
+
+  if (ctx) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  BN_MONT_CTX_free(mont);
+
+  return ok;
+}
+
+DSA *DSAparams_dup(const DSA *dsa) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  ret->p = BN_dup(dsa->p);
+  ret->q = BN_dup(dsa->q);
+  ret->g = BN_dup(dsa->g);
+  if (ret->p == NULL || ret->q == NULL || ret->g == NULL) {
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_generate_key(DSA *dsa) {
+  int ok = 0;
+  BN_CTX *ctx = NULL;
+  BIGNUM *pub_key = NULL, *priv_key = NULL;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  priv_key = dsa->priv_key;
+  if (priv_key == NULL) {
+    priv_key = BN_new();
+    if (priv_key == NULL) {
+      goto err;
+    }
+  }
+
+  if (!BN_rand_range_ex(priv_key, 1, dsa->q)) {
+    goto err;
+  }
+
+  pub_key = dsa->pub_key;
+  if (pub_key == NULL) {
+    pub_key = BN_new();
+    if (pub_key == NULL) {
+      goto err;
+    }
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dsa->method_mont_p, &dsa->method_mont_lock,
+                              dsa->p, ctx) ||
+      !BN_mod_exp_mont_consttime(pub_key, dsa->g, priv_key, dsa->p, ctx,
+                                 dsa->method_mont_p)) {
+    goto err;
+  }
+
+  dsa->priv_key = priv_key;
+  dsa->pub_key = pub_key;
+  ok = 1;
+
+err:
+  if (dsa->pub_key == NULL) {
+    BN_free(pub_key);
+  }
+  if (dsa->priv_key == NULL) {
+    BN_free(priv_key);
+  }
+  BN_CTX_free(ctx);
+
+  return ok;
+}
+
+DSA_SIG *DSA_SIG_new(void) {
+  DSA_SIG *sig;
+  sig = OPENSSL_malloc(sizeof(DSA_SIG));
+  if (!sig) {
+    return NULL;
+  }
+  sig->r = NULL;
+  sig->s = NULL;
+  return sig;
+}
+
+void DSA_SIG_free(DSA_SIG *sig) {
+  if (!sig) {
+    return;
+  }
+
+  BN_free(sig->r);
+  BN_free(sig->s);
+  OPENSSL_free(sig);
+}
+
+// mod_mul_consttime sets |r| to |a| * |b| modulo |mont->N|, treating |a| and
+// |b| as secret. This function internally uses Montgomery reduction, but
+// neither inputs nor outputs are in Montgomery form.
+static int mod_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                             const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  // |BN_mod_mul_montgomery| removes a factor of R, so we cancel it with a
+  // single |BN_to_montgomery| which adds one factor of R.
+  int ok = tmp != NULL &&
+           BN_to_montgomery(tmp, a, mont, ctx) &&
+           BN_mod_mul_montgomery(r, tmp, b, mont, ctx);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len, const DSA *dsa) {
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return NULL;
+  }
+
+  // Reject invalid parameters. In particular, the algorithm will infinite loop
+  // if |g| is zero.
+  if (BN_is_zero(dsa->p) || BN_is_zero(dsa->q) || BN_is_zero(dsa->g)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_INVALID_PARAMETERS);
+    return NULL;
+  }
+
+  // We only support DSA keys that are a multiple of 8 bits. (This is a weaker
+  // check than the one in |DSA_do_check_signature|, which only allows 160-,
+  // 224-, and 256-bit keys.
+  if (BN_num_bits(dsa->q) % 8 != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_Q_VALUE);
+    return NULL;
+  }
+
+  BIGNUM *kinv = NULL, *r = NULL, *s = NULL;
+  BIGNUM m;
+  BIGNUM xr;
+  BN_CTX *ctx = NULL;
+  DSA_SIG *ret = NULL;
+
+  BN_init(&m);
+  BN_init(&xr);
+  s = BN_new();
+  if (s == NULL) {
+    goto err;
+  }
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+redo:
+  if (!dsa_sign_setup(dsa, ctx, &kinv, &r)) {
+    goto err;
+  }
+
+  if (digest_len > BN_num_bytes(dsa->q)) {
+    // If the digest length is greater than the size of |dsa->q| use the
+    // BN_num_bits(dsa->q) leftmost bits of the digest, see FIPS 186-3, 4.2.
+    // Note the above check that |dsa->q| is a multiple of 8 bits.
+    digest_len = BN_num_bytes(dsa->q);
+  }
+
+  if (BN_bin2bn(digest, digest_len, &m) == NULL) {
+    goto err;
+  }
+
+  // |m| is bounded by 2^(num_bits(q)), which is slightly looser than q. This
+  // violates |bn_mod_add_consttime| and |mod_mul_consttime|'s preconditions.
+  // (The underlying algorithms could accept looser bounds, but we reduce for
+  // simplicity.)
+  size_t q_width = bn_minimal_width(dsa->q);
+  if (!bn_resize_words(&m, q_width) ||
+      !bn_resize_words(&xr, q_width)) {
+    goto err;
+  }
+  bn_reduce_once_in_place(m.d, 0 /* no carry word */, dsa->q->d,
+                          xr.d /* scratch space */, q_width);
+
+  // Compute s = inv(k) (m + xr) mod q. Note |dsa->method_mont_q| is
+  // initialized by |dsa_sign_setup|.
+  if (!mod_mul_consttime(&xr, dsa->priv_key, r, dsa->method_mont_q, ctx) ||
+      !bn_mod_add_consttime(s, &xr, &m, dsa->q, ctx) ||
+      !mod_mul_consttime(s, s, kinv, dsa->method_mont_q, ctx)) {
+    goto err;
+  }
+
+  // Redo if r or s is zero as required by FIPS 186-3: this is
+  // very unlikely.
+  if (BN_is_zero(r) || BN_is_zero(s)) {
+    goto redo;
+  }
+  ret = DSA_SIG_new();
+  if (ret == NULL) {
+    goto err;
+  }
+  ret->r = r;
+  ret->s = s;
+
+err:
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+    BN_free(r);
+    BN_free(s);
+  }
+  BN_CTX_free(ctx);
+  BN_clear_free(&m);
+  BN_clear_free(&xr);
+  BN_clear_free(kinv);
+
+  return ret;
+}
+
+int DSA_do_verify(const uint8_t *digest, size_t digest_len, DSA_SIG *sig,
+                  const DSA *dsa) {
+  int valid;
+  if (!DSA_do_check_signature(&valid, digest, digest_len, sig, dsa)) {
+    return -1;
+  }
+  return valid;
+}
+
+int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                           size_t digest_len, DSA_SIG *sig, const DSA *dsa) {
+  BN_CTX *ctx;
+  BIGNUM u1, u2, t1;
+  int ret = 0;
+  unsigned i;
+
+  *out_valid = 0;
+
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  i = BN_num_bits(dsa->q);
+  // FIPS 186-3 allows only different sizes for q.
+  if (i != 160 && i != 224 && i != 256) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_Q_VALUE);
+    return 0;
+  }
+
+  if (BN_num_bits(dsa->p) > OPENSSL_DSA_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+
+  BN_init(&u1);
+  BN_init(&u2);
+  BN_init(&t1);
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  if (BN_is_zero(sig->r) || BN_is_negative(sig->r) ||
+      BN_ucmp(sig->r, dsa->q) >= 0) {
+    ret = 1;
+    goto err;
+  }
+  if (BN_is_zero(sig->s) || BN_is_negative(sig->s) ||
+      BN_ucmp(sig->s, dsa->q) >= 0) {
+    ret = 1;
+    goto err;
+  }
+
+  // Calculate W = inv(S) mod Q
+  // save W in u2
+  if (BN_mod_inverse(&u2, sig->s, dsa->q, ctx) == NULL) {
+    goto err;
+  }
+
+  // save M in u1
+  if (digest_len > (i >> 3)) {
+    // if the digest length is greater than the size of q use the
+    // BN_num_bits(dsa->q) leftmost bits of the digest, see
+    // fips 186-3, 4.2
+    digest_len = (i >> 3);
+  }
+
+  if (BN_bin2bn(digest, digest_len, &u1) == NULL) {
+    goto err;
+  }
+
+  // u1 = M * w mod q
+  if (!BN_mod_mul(&u1, &u1, &u2, dsa->q, ctx)) {
+    goto err;
+  }
+
+  // u2 = r * w mod q
+  if (!BN_mod_mul(&u2, sig->r, &u2, dsa->q, ctx)) {
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_p,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->p,
+                              ctx)) {
+    goto err;
+  }
+
+  if (!BN_mod_exp2_mont(&t1, dsa->g, &u1, dsa->pub_key, &u2, dsa->p, ctx,
+                        dsa->method_mont_p)) {
+    goto err;
+  }
+
+  // BN_copy(&u1,&t1);
+  // let u1 = u1 mod q
+  if (!BN_mod(&u1, &t1, dsa->q, ctx)) {
+    goto err;
+  }
+
+  // V is now in u1.  If the signature is correct, it will be
+  // equal to R.
+  *out_valid = BN_ucmp(&u1, sig->r) == 0;
+  ret = 1;
+
+err:
+  if (ret != 1) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+  }
+  BN_CTX_free(ctx);
+  BN_free(&u1);
+  BN_free(&u2);
+  BN_free(&t1);
+
+  return ret;
+}
+
+int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+             uint8_t *out_sig, unsigned int *out_siglen, const DSA *dsa) {
+  DSA_SIG *s;
+
+  s = DSA_do_sign(digest, digest_len, dsa);
+  if (s == NULL) {
+    *out_siglen = 0;
+    return 0;
+  }
+
+  *out_siglen = i2d_DSA_SIG(s, &out_sig);
+  DSA_SIG_free(s);
+  return 1;
+}
+
+int DSA_verify(int type, const uint8_t *digest, size_t digest_len,
+               const uint8_t *sig, size_t sig_len, const DSA *dsa) {
+  int valid;
+  if (!DSA_check_signature(&valid, digest, digest_len, sig, sig_len, dsa)) {
+    return -1;
+  }
+  return valid;
+}
+
+int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                        size_t digest_len, const uint8_t *sig, size_t sig_len,
+                        const DSA *dsa) {
+  DSA_SIG *s = NULL;
+  int ret = 0;
+  uint8_t *der = NULL;
+
+  s = DSA_SIG_new();
+  if (s == NULL) {
+    goto err;
+  }
+
+  const uint8_t *sigp = sig;
+  if (d2i_DSA_SIG(&s, &sigp, sig_len) == NULL || sigp != sig + sig_len) {
+    goto err;
+  }
+
+  // Ensure that the signature uses DER and doesn't have trailing garbage.
+  int der_len = i2d_DSA_SIG(s, &der);
+  if (der_len < 0 || (size_t)der_len != sig_len ||
+      OPENSSL_memcmp(sig, der, sig_len)) {
+    goto err;
+  }
+
+  ret = DSA_do_check_signature(out_valid, digest, digest_len, s, dsa);
+
+err:
+  OPENSSL_free(der);
+  DSA_SIG_free(s);
+  return ret;
+}
+
+// der_len_len returns the number of bytes needed to represent a length of |len|
+// in DER.
+static size_t der_len_len(size_t len) {
+  if (len < 0x80) {
+    return 1;
+  }
+  size_t ret = 1;
+  while (len > 0) {
+    ret++;
+    len >>= 8;
+  }
+  return ret;
+}
+
+int DSA_size(const DSA *dsa) {
+  size_t order_len = BN_num_bytes(dsa->q);
+  // Compute the maximum length of an |order_len| byte integer. Defensively
+  // assume that the leading 0x00 is included.
+  size_t integer_len = 1 /* tag */ + der_len_len(order_len + 1) + 1 + order_len;
+  if (integer_len < order_len) {
+    return 0;
+  }
+  // A DSA signature is two INTEGERs.
+  size_t value_len = 2 * integer_len;
+  if (value_len < integer_len) {
+    return 0;
+  }
+  // Add the header.
+  size_t ret = 1 /* tag */ + der_len_len(value_len) + value_len;
+  if (ret < value_len) {
+    return 0;
+  }
+  return ret;
+}
+
+static int dsa_sign_setup(const DSA *dsa, BN_CTX *ctx, BIGNUM **out_kinv,
+                          BIGNUM **out_r) {
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  int ret = 0;
+  BIGNUM k;
+  BN_init(&k);
+  BIGNUM *r = BN_new();
+  BIGNUM *kinv = BN_new();
+  if (r == NULL || kinv == NULL ||
+      // Get random k
+      !BN_rand_range_ex(&k, 1, dsa->q) ||
+      !BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_p,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->p,
+                              ctx) ||
+      !BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_q,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->q,
+                              ctx) ||
+      // Compute r = (g^k mod p) mod q
+      !BN_mod_exp_mont_consttime(r, dsa->g, &k, dsa->p, ctx,
+                                 dsa->method_mont_p) ||
+      // Note |BN_mod| below is not constant-time and may leak information about
+      // |r|. |dsa->p| may be significantly larger than |dsa->q|, so this is not
+      // easily performed in constant-time with Montgomery reduction.
+      //
+      // However, |r| at this point is g^k (mod p). It is almost the value of
+      // |r| revealed in the signature anyway (g^k (mod p) (mod q)), going from
+      // it to |k| would require computing a discrete log.
+      !BN_mod(r, r, dsa->q, ctx) ||
+      // Compute part of 's = inv(k) (m + xr) mod q' using Fermat's Little
+      // Theorem.
+      !bn_mod_inverse_prime(kinv, &k, dsa->q, ctx, dsa->method_mont_q)) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  BN_clear_free(*out_kinv);
+  *out_kinv = kinv;
+  kinv = NULL;
+
+  BN_clear_free(*out_r);
+  *out_r = r;
+  r = NULL;
+
+  ret = 1;
+
+err:
+  BN_clear_free(&k);
+  BN_clear_free(r);
+  BN_clear_free(kinv);
+  return ret;
+}
+
+int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int DSA_set_ex_data(DSA *dsa, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&dsa->ex_data, idx, arg);
+}
+
+void *DSA_get_ex_data(const DSA *dsa, int idx) {
+  return CRYPTO_get_ex_data(&dsa->ex_data, idx);
+}
+
+DH *DSA_dup_DH(const DSA *dsa) {
+  if (dsa == NULL) {
+    return NULL;
+  }
+
+  DH *ret = DH_new();
+  if (ret == NULL) {
+    goto err;
+  }
+  if (dsa->q != NULL) {
+    ret->priv_length = BN_num_bits(dsa->q);
+    if ((ret->q = BN_dup(dsa->q)) == NULL) {
+      goto err;
+    }
+  }
+  if ((dsa->p != NULL && (ret->p = BN_dup(dsa->p)) == NULL) ||
+      (dsa->g != NULL && (ret->g = BN_dup(dsa->g)) == NULL) ||
+      (dsa->pub_key != NULL && (ret->pub_key = BN_dup(dsa->pub_key)) == NULL) ||
+      (dsa->priv_key != NULL &&
+       (ret->priv_key = BN_dup(dsa->priv_key)) == NULL)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  DH_free(ret);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c.grpc_back
new file mode 100644
index 0000000..cc98225
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa.c.grpc_back	
@@ -0,0 +1,970 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#include <openssl/dsa.h>
+
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/dh.h>
+#include <openssl/digest.h>
+#include <openssl/engine.h>
+#include <openssl/err.h>
+#include <openssl/ex_data.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+#include <openssl/thread.h>
+
+#include "../fipsmodule/bn/internal.h"
+#include "../internal.h"
+
+
+#define OPENSSL_DSA_MAX_MODULUS_BITS 10000
+
+// Primality test according to FIPS PUB 186[-1], Appendix 2.1: 50 rounds of
+// Miller-Rabin.
+#define DSS_prime_checks 50
+
+static int dsa_sign_setup(const DSA *dsa, BN_CTX *ctx_in, BIGNUM **out_kinv,
+                          BIGNUM **out_r);
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+DSA *DSA_new(void) {
+  DSA *dsa = OPENSSL_malloc(sizeof(DSA));
+  if (dsa == NULL) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(dsa, 0, sizeof(DSA));
+
+  dsa->references = 1;
+
+  CRYPTO_MUTEX_init(&dsa->method_mont_lock);
+  CRYPTO_new_ex_data(&dsa->ex_data);
+
+  return dsa;
+}
+
+void DSA_free(DSA *dsa) {
+  if (dsa == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&dsa->references)) {
+    return;
+  }
+
+  CRYPTO_free_ex_data(&g_ex_data_class, dsa, &dsa->ex_data);
+
+  BN_clear_free(dsa->p);
+  BN_clear_free(dsa->q);
+  BN_clear_free(dsa->g);
+  BN_clear_free(dsa->pub_key);
+  BN_clear_free(dsa->priv_key);
+  BN_MONT_CTX_free(dsa->method_mont_p);
+  BN_MONT_CTX_free(dsa->method_mont_q);
+  CRYPTO_MUTEX_cleanup(&dsa->method_mont_lock);
+  OPENSSL_free(dsa);
+}
+
+int DSA_up_ref(DSA *dsa) {
+  CRYPTO_refcount_inc(&dsa->references);
+  return 1;
+}
+
+void DSA_get0_key(const DSA *dsa, const BIGNUM **out_pub_key,
+                  const BIGNUM **out_priv_key) {
+  if (out_pub_key != NULL) {
+    *out_pub_key = dsa->pub_key;
+  }
+  if (out_priv_key != NULL) {
+    *out_priv_key = dsa->priv_key;
+  }
+}
+
+void DSA_get0_pqg(const DSA *dsa, const BIGNUM **out_p, const BIGNUM **out_q,
+                  const BIGNUM **out_g) {
+  if (out_p != NULL) {
+    *out_p = dsa->p;
+  }
+  if (out_q != NULL) {
+    *out_q = dsa->q;
+  }
+  if (out_g != NULL) {
+    *out_g = dsa->g;
+  }
+}
+
+int DSA_set0_key(DSA *dsa, BIGNUM *pub_key, BIGNUM *priv_key) {
+  if (dsa->pub_key == NULL && pub_key == NULL) {
+    return 0;
+  }
+
+  if (pub_key != NULL) {
+    BN_free(dsa->pub_key);
+    dsa->pub_key = pub_key;
+  }
+  if (priv_key != NULL) {
+    BN_free(dsa->priv_key);
+    dsa->priv_key = priv_key;
+  }
+
+  return 1;
+}
+
+int DSA_set0_pqg(DSA *dsa, BIGNUM *p, BIGNUM *q, BIGNUM *g) {
+  if ((dsa->p == NULL && p == NULL) ||
+      (dsa->q == NULL && q == NULL) ||
+      (dsa->g == NULL && g == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(dsa->p);
+    dsa->p = p;
+  }
+  if (q != NULL) {
+    BN_free(dsa->q);
+    dsa->q = q;
+  }
+  if (g != NULL) {
+    BN_free(dsa->g);
+    dsa->g = g;
+  }
+
+  return 1;
+}
+
+int DSA_generate_parameters_ex(DSA *dsa, unsigned bits, const uint8_t *seed_in,
+                               size_t seed_len, int *out_counter,
+                               unsigned long *out_h, BN_GENCB *cb) {
+  int ok = 0;
+  unsigned char seed[SHA256_DIGEST_LENGTH];
+  unsigned char md[SHA256_DIGEST_LENGTH];
+  unsigned char buf[SHA256_DIGEST_LENGTH], buf2[SHA256_DIGEST_LENGTH];
+  BIGNUM *r0, *W, *X, *c, *test;
+  BIGNUM *g = NULL, *q = NULL, *p = NULL;
+  BN_MONT_CTX *mont = NULL;
+  int k, n = 0, m = 0;
+  unsigned i;
+  int counter = 0;
+  int r = 0;
+  BN_CTX *ctx = NULL;
+  unsigned int h = 2;
+  unsigned qsize;
+  const EVP_MD *evpmd;
+
+  evpmd = (bits >= 2048) ? EVP_sha256() : EVP_sha1();
+  qsize = EVP_MD_size(evpmd);
+
+  if (bits < 512) {
+    bits = 512;
+  }
+
+  bits = (bits + 63) / 64 * 64;
+
+  if (seed_in != NULL) {
+    if (seed_len < (size_t)qsize) {
+      return 0;
+    }
+    if (seed_len > (size_t)qsize) {
+      // Only consume as much seed as is expected.
+      seed_len = qsize;
+    }
+    OPENSSL_memcpy(seed, seed_in, seed_len);
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+
+  r0 = BN_CTX_get(ctx);
+  g = BN_CTX_get(ctx);
+  W = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  X = BN_CTX_get(ctx);
+  c = BN_CTX_get(ctx);
+  p = BN_CTX_get(ctx);
+  test = BN_CTX_get(ctx);
+
+  if (test == NULL || !BN_lshift(test, BN_value_one(), bits - 1)) {
+    goto err;
+  }
+
+  for (;;) {
+    // Find q.
+    for (;;) {
+      // step 1
+      if (!BN_GENCB_call(cb, BN_GENCB_GENERATED, m++)) {
+        goto err;
+      }
+
+      int use_random_seed = (seed_in == NULL);
+      if (use_random_seed) {
+        if (!RAND_bytes(seed, qsize)) {
+          goto err;
+        }
+      } else {
+        // If we come back through, use random seed next time.
+        seed_in = NULL;
+      }
+      OPENSSL_memcpy(buf, seed, qsize);
+      OPENSSL_memcpy(buf2, seed, qsize);
+      // precompute "SEED + 1" for step 7:
+      for (i = qsize - 1; i < qsize; i--) {
+        buf[i]++;
+        if (buf[i] != 0) {
+          break;
+        }
+      }
+
+      // step 2
+      if (!EVP_Digest(seed, qsize, md, NULL, evpmd, NULL) ||
+          !EVP_Digest(buf, qsize, buf2, NULL, evpmd, NULL)) {
+        goto err;
+      }
+      for (i = 0; i < qsize; i++) {
+        md[i] ^= buf2[i];
+      }
+
+      // step 3
+      md[0] |= 0x80;
+      md[qsize - 1] |= 0x01;
+      if (!BN_bin2bn(md, qsize, q)) {
+        goto err;
+      }
+
+      // step 4
+      r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx, use_random_seed, cb);
+      if (r > 0) {
+        break;
+      }
+      if (r != 0) {
+        goto err;
+      }
+
+      // do a callback call
+      // step 5
+    }
+
+    if (!BN_GENCB_call(cb, 2, 0) || !BN_GENCB_call(cb, 3, 0)) {
+      goto err;
+    }
+
+    // step 6
+    counter = 0;
+    // "offset = 2"
+
+    n = (bits - 1) / 160;
+
+    for (;;) {
+      if ((counter != 0) && !BN_GENCB_call(cb, BN_GENCB_GENERATED, counter)) {
+        goto err;
+      }
+
+      // step 7
+      BN_zero(W);
+      // now 'buf' contains "SEED + offset - 1"
+      for (k = 0; k <= n; k++) {
+        // obtain "SEED + offset + k" by incrementing:
+        for (i = qsize - 1; i < qsize; i--) {
+          buf[i]++;
+          if (buf[i] != 0) {
+            break;
+          }
+        }
+
+        if (!EVP_Digest(buf, qsize, md, NULL, evpmd, NULL)) {
+          goto err;
+        }
+
+        // step 8
+        if (!BN_bin2bn(md, qsize, r0) ||
+            !BN_lshift(r0, r0, (qsize << 3) * k) ||
+            !BN_add(W, W, r0)) {
+          goto err;
+        }
+      }
+
+      // more of step 8
+      if (!BN_mask_bits(W, bits - 1) ||
+          !BN_copy(X, W) ||
+          !BN_add(X, X, test)) {
+        goto err;
+      }
+
+      // step 9
+      if (!BN_lshift1(r0, q) ||
+          !BN_mod(c, X, r0, ctx) ||
+          !BN_sub(r0, c, BN_value_one()) ||
+          !BN_sub(p, X, r0)) {
+        goto err;
+      }
+
+      // step 10
+      if (BN_cmp(p, test) >= 0) {
+        // step 11
+        r = BN_is_prime_fasttest_ex(p, DSS_prime_checks, ctx, 1, cb);
+        if (r > 0) {
+          goto end;  // found it
+        }
+        if (r != 0) {
+          goto err;
+        }
+      }
+
+      // step 13
+      counter++;
+      // "offset = offset + n + 1"
+
+      // step 14
+      if (counter >= 4096) {
+        break;
+      }
+    }
+  }
+end:
+  if (!BN_GENCB_call(cb, 2, 1)) {
+    goto err;
+  }
+
+  // We now need to generate g
+  // Set r0=(p-1)/q
+  if (!BN_sub(test, p, BN_value_one()) ||
+      !BN_div(r0, NULL, test, q, ctx)) {
+    goto err;
+  }
+
+  mont = BN_MONT_CTX_new_for_modulus(p, ctx);
+  if (mont == NULL ||
+      !BN_set_word(test, h)) {
+    goto err;
+  }
+
+  for (;;) {
+    // g=test^r0%p
+    if (!BN_mod_exp_mont(g, test, r0, p, ctx, mont)) {
+      goto err;
+    }
+    if (!BN_is_one(g)) {
+      break;
+    }
+    if (!BN_add(test, test, BN_value_one())) {
+      goto err;
+    }
+    h++;
+  }
+
+  if (!BN_GENCB_call(cb, 3, 1)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (ok) {
+    BN_free(dsa->p);
+    BN_free(dsa->q);
+    BN_free(dsa->g);
+    dsa->p = BN_dup(p);
+    dsa->q = BN_dup(q);
+    dsa->g = BN_dup(g);
+    if (dsa->p == NULL || dsa->q == NULL || dsa->g == NULL) {
+      ok = 0;
+      goto err;
+    }
+    if (out_counter != NULL) {
+      *out_counter = counter;
+    }
+    if (out_h != NULL) {
+      *out_h = h;
+    }
+  }
+
+  if (ctx) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  BN_MONT_CTX_free(mont);
+
+  return ok;
+}
+
+DSA *DSAparams_dup(const DSA *dsa) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  ret->p = BN_dup(dsa->p);
+  ret->q = BN_dup(dsa->q);
+  ret->g = BN_dup(dsa->g);
+  if (ret->p == NULL || ret->q == NULL || ret->g == NULL) {
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_generate_key(DSA *dsa) {
+  int ok = 0;
+  BN_CTX *ctx = NULL;
+  BIGNUM *pub_key = NULL, *priv_key = NULL;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  priv_key = dsa->priv_key;
+  if (priv_key == NULL) {
+    priv_key = BN_new();
+    if (priv_key == NULL) {
+      goto err;
+    }
+  }
+
+  if (!BN_rand_range_ex(priv_key, 1, dsa->q)) {
+    goto err;
+  }
+
+  pub_key = dsa->pub_key;
+  if (pub_key == NULL) {
+    pub_key = BN_new();
+    if (pub_key == NULL) {
+      goto err;
+    }
+  }
+
+  if (!BN_MONT_CTX_set_locked(&dsa->method_mont_p, &dsa->method_mont_lock,
+                              dsa->p, ctx) ||
+      !BN_mod_exp_mont_consttime(pub_key, dsa->g, priv_key, dsa->p, ctx,
+                                 dsa->method_mont_p)) {
+    goto err;
+  }
+
+  dsa->priv_key = priv_key;
+  dsa->pub_key = pub_key;
+  ok = 1;
+
+err:
+  if (dsa->pub_key == NULL) {
+    BN_free(pub_key);
+  }
+  if (dsa->priv_key == NULL) {
+    BN_free(priv_key);
+  }
+  BN_CTX_free(ctx);
+
+  return ok;
+}
+
+DSA_SIG *DSA_SIG_new(void) {
+  DSA_SIG *sig;
+  sig = OPENSSL_malloc(sizeof(DSA_SIG));
+  if (!sig) {
+    return NULL;
+  }
+  sig->r = NULL;
+  sig->s = NULL;
+  return sig;
+}
+
+void DSA_SIG_free(DSA_SIG *sig) {
+  if (!sig) {
+    return;
+  }
+
+  BN_free(sig->r);
+  BN_free(sig->s);
+  OPENSSL_free(sig);
+}
+
+// mod_mul_consttime sets |r| to |a| * |b| modulo |mont->N|, treating |a| and
+// |b| as secret. This function internally uses Montgomery reduction, but
+// neither inputs nor outputs are in Montgomery form.
+static int mod_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                             const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  // |BN_mod_mul_montgomery| removes a factor of R, so we cancel it with a
+  // single |BN_to_montgomery| which adds one factor of R.
+  int ok = tmp != NULL &&
+           BN_to_montgomery(tmp, a, mont, ctx) &&
+           BN_mod_mul_montgomery(r, tmp, b, mont, ctx);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len, const DSA *dsa) {
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return NULL;
+  }
+
+  // Reject invalid parameters. In particular, the algorithm will infinite loop
+  // if |g| is zero.
+  if (BN_is_zero(dsa->p) || BN_is_zero(dsa->q) || BN_is_zero(dsa->g)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_INVALID_PARAMETERS);
+    return NULL;
+  }
+
+  // We only support DSA keys that are a multiple of 8 bits. (This is a weaker
+  // check than the one in |DSA_do_check_signature|, which only allows 160-,
+  // 224-, and 256-bit keys.
+  if (BN_num_bits(dsa->q) % 8 != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_Q_VALUE);
+    return NULL;
+  }
+
+  BIGNUM *kinv = NULL, *r = NULL, *s = NULL;
+  BIGNUM m;
+  BIGNUM xr;
+  BN_CTX *ctx = NULL;
+  DSA_SIG *ret = NULL;
+
+  BN_init(&m);
+  BN_init(&xr);
+  s = BN_new();
+  if (s == NULL) {
+    goto err;
+  }
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+redo:
+  if (!dsa_sign_setup(dsa, ctx, &kinv, &r)) {
+    goto err;
+  }
+
+  if (digest_len > BN_num_bytes(dsa->q)) {
+    // If the digest length is greater than the size of |dsa->q| use the
+    // BN_num_bits(dsa->q) leftmost bits of the digest, see FIPS 186-3, 4.2.
+    // Note the above check that |dsa->q| is a multiple of 8 bits.
+    digest_len = BN_num_bytes(dsa->q);
+  }
+
+  if (BN_bin2bn(digest, digest_len, &m) == NULL) {
+    goto err;
+  }
+
+  // |m| is bounded by 2^(num_bits(q)), which is slightly looser than q. This
+  // violates |bn_mod_add_consttime| and |mod_mul_consttime|'s preconditions.
+  // (The underlying algorithms could accept looser bounds, but we reduce for
+  // simplicity.)
+  size_t q_width = bn_minimal_width(dsa->q);
+  if (!bn_resize_words(&m, q_width) ||
+      !bn_resize_words(&xr, q_width)) {
+    goto err;
+  }
+  bn_reduce_once_in_place(m.d, 0 /* no carry word */, dsa->q->d,
+                          xr.d /* scratch space */, q_width);
+
+  // Compute s = inv(k) (m + xr) mod q. Note |dsa->method_mont_q| is
+  // initialized by |dsa_sign_setup|.
+  if (!mod_mul_consttime(&xr, dsa->priv_key, r, dsa->method_mont_q, ctx) ||
+      !bn_mod_add_consttime(s, &xr, &m, dsa->q, ctx) ||
+      !mod_mul_consttime(s, s, kinv, dsa->method_mont_q, ctx)) {
+    goto err;
+  }
+
+  // Redo if r or s is zero as required by FIPS 186-3: this is
+  // very unlikely.
+  if (BN_is_zero(r) || BN_is_zero(s)) {
+    goto redo;
+  }
+  ret = DSA_SIG_new();
+  if (ret == NULL) {
+    goto err;
+  }
+  ret->r = r;
+  ret->s = s;
+
+err:
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+    BN_free(r);
+    BN_free(s);
+  }
+  BN_CTX_free(ctx);
+  BN_clear_free(&m);
+  BN_clear_free(&xr);
+  BN_clear_free(kinv);
+
+  return ret;
+}
+
+int DSA_do_verify(const uint8_t *digest, size_t digest_len, DSA_SIG *sig,
+                  const DSA *dsa) {
+  int valid;
+  if (!DSA_do_check_signature(&valid, digest, digest_len, sig, dsa)) {
+    return -1;
+  }
+  return valid;
+}
+
+int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                           size_t digest_len, DSA_SIG *sig, const DSA *dsa) {
+  BN_CTX *ctx;
+  BIGNUM u1, u2, t1;
+  int ret = 0;
+  unsigned i;
+
+  *out_valid = 0;
+
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  i = BN_num_bits(dsa->q);
+  // FIPS 186-3 allows only different sizes for q.
+  if (i != 160 && i != 224 && i != 256) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_Q_VALUE);
+    return 0;
+  }
+
+  if (BN_num_bits(dsa->p) > OPENSSL_DSA_MAX_MODULUS_BITS) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+
+  BN_init(&u1);
+  BN_init(&u2);
+  BN_init(&t1);
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  if (BN_is_zero(sig->r) || BN_is_negative(sig->r) ||
+      BN_ucmp(sig->r, dsa->q) >= 0) {
+    ret = 1;
+    goto err;
+  }
+  if (BN_is_zero(sig->s) || BN_is_negative(sig->s) ||
+      BN_ucmp(sig->s, dsa->q) >= 0) {
+    ret = 1;
+    goto err;
+  }
+
+  // Calculate W = inv(S) mod Q
+  // save W in u2
+  if (BN_mod_inverse(&u2, sig->s, dsa->q, ctx) == NULL) {
+    goto err;
+  }
+
+  // save M in u1
+  if (digest_len > (i >> 3)) {
+    // if the digest length is greater than the size of q use the
+    // BN_num_bits(dsa->q) leftmost bits of the digest, see
+    // fips 186-3, 4.2
+    digest_len = (i >> 3);
+  }
+
+  if (BN_bin2bn(digest, digest_len, &u1) == NULL) {
+    goto err;
+  }
+
+  // u1 = M * w mod q
+  if (!BN_mod_mul(&u1, &u1, &u2, dsa->q, ctx)) {
+    goto err;
+  }
+
+  // u2 = r * w mod q
+  if (!BN_mod_mul(&u2, sig->r, &u2, dsa->q, ctx)) {
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_p,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->p,
+                              ctx)) {
+    goto err;
+  }
+
+  if (!BN_mod_exp2_mont(&t1, dsa->g, &u1, dsa->pub_key, &u2, dsa->p, ctx,
+                        dsa->method_mont_p)) {
+    goto err;
+  }
+
+  // BN_copy(&u1,&t1);
+  // let u1 = u1 mod q
+  if (!BN_mod(&u1, &t1, dsa->q, ctx)) {
+    goto err;
+  }
+
+  // V is now in u1.  If the signature is correct, it will be
+  // equal to R.
+  *out_valid = BN_ucmp(&u1, sig->r) == 0;
+  ret = 1;
+
+err:
+  if (ret != 1) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+  }
+  BN_CTX_free(ctx);
+  BN_free(&u1);
+  BN_free(&u2);
+  BN_free(&t1);
+
+  return ret;
+}
+
+int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+             uint8_t *out_sig, unsigned int *out_siglen, const DSA *dsa) {
+  DSA_SIG *s;
+
+  s = DSA_do_sign(digest, digest_len, dsa);
+  if (s == NULL) {
+    *out_siglen = 0;
+    return 0;
+  }
+
+  *out_siglen = i2d_DSA_SIG(s, &out_sig);
+  DSA_SIG_free(s);
+  return 1;
+}
+
+int DSA_verify(int type, const uint8_t *digest, size_t digest_len,
+               const uint8_t *sig, size_t sig_len, const DSA *dsa) {
+  int valid;
+  if (!DSA_check_signature(&valid, digest, digest_len, sig, sig_len, dsa)) {
+    return -1;
+  }
+  return valid;
+}
+
+int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                        size_t digest_len, const uint8_t *sig, size_t sig_len,
+                        const DSA *dsa) {
+  DSA_SIG *s = NULL;
+  int ret = 0;
+  uint8_t *der = NULL;
+
+  s = DSA_SIG_new();
+  if (s == NULL) {
+    goto err;
+  }
+
+  const uint8_t *sigp = sig;
+  if (d2i_DSA_SIG(&s, &sigp, sig_len) == NULL || sigp != sig + sig_len) {
+    goto err;
+  }
+
+  // Ensure that the signature uses DER and doesn't have trailing garbage.
+  int der_len = i2d_DSA_SIG(s, &der);
+  if (der_len < 0 || (size_t)der_len != sig_len ||
+      OPENSSL_memcmp(sig, der, sig_len)) {
+    goto err;
+  }
+
+  ret = DSA_do_check_signature(out_valid, digest, digest_len, s, dsa);
+
+err:
+  OPENSSL_free(der);
+  DSA_SIG_free(s);
+  return ret;
+}
+
+// der_len_len returns the number of bytes needed to represent a length of |len|
+// in DER.
+static size_t der_len_len(size_t len) {
+  if (len < 0x80) {
+    return 1;
+  }
+  size_t ret = 1;
+  while (len > 0) {
+    ret++;
+    len >>= 8;
+  }
+  return ret;
+}
+
+int DSA_size(const DSA *dsa) {
+  size_t order_len = BN_num_bytes(dsa->q);
+  // Compute the maximum length of an |order_len| byte integer. Defensively
+  // assume that the leading 0x00 is included.
+  size_t integer_len = 1 /* tag */ + der_len_len(order_len + 1) + 1 + order_len;
+  if (integer_len < order_len) {
+    return 0;
+  }
+  // A DSA signature is two INTEGERs.
+  size_t value_len = 2 * integer_len;
+  if (value_len < integer_len) {
+    return 0;
+  }
+  // Add the header.
+  size_t ret = 1 /* tag */ + der_len_len(value_len) + value_len;
+  if (ret < value_len) {
+    return 0;
+  }
+  return ret;
+}
+
+static int dsa_sign_setup(const DSA *dsa, BN_CTX *ctx, BIGNUM **out_kinv,
+                          BIGNUM **out_r) {
+  if (!dsa->p || !dsa->q || !dsa->g) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  int ret = 0;
+  BIGNUM k;
+  BN_init(&k);
+  BIGNUM *r = BN_new();
+  BIGNUM *kinv = BN_new();
+  if (r == NULL || kinv == NULL ||
+      // Get random k
+      !BN_rand_range_ex(&k, 1, dsa->q) ||
+      !BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_p,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->p,
+                              ctx) ||
+      !BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_q,
+                              (CRYPTO_MUTEX *)&dsa->method_mont_lock, dsa->q,
+                              ctx) ||
+      // Compute r = (g^k mod p) mod q
+      !BN_mod_exp_mont_consttime(r, dsa->g, &k, dsa->p, ctx,
+                                 dsa->method_mont_p) ||
+      // Note |BN_mod| below is not constant-time and may leak information about
+      // |r|. |dsa->p| may be significantly larger than |dsa->q|, so this is not
+      // easily performed in constant-time with Montgomery reduction.
+      //
+      // However, |r| at this point is g^k (mod p). It is almost the value of
+      // |r| revealed in the signature anyway (g^k (mod p) (mod q)), going from
+      // it to |k| would require computing a discrete log.
+      !BN_mod(r, r, dsa->q, ctx) ||
+      // Compute part of 's = inv(k) (m + xr) mod q' using Fermat's Little
+      // Theorem.
+      !bn_mod_inverse_prime(kinv, &k, dsa->q, ctx, dsa->method_mont_q)) {
+    OPENSSL_PUT_ERROR(DSA, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  BN_clear_free(*out_kinv);
+  *out_kinv = kinv;
+  kinv = NULL;
+
+  BN_clear_free(*out_r);
+  *out_r = r;
+  r = NULL;
+
+  ret = 1;
+
+err:
+  BN_clear_free(&k);
+  BN_clear_free(r);
+  BN_clear_free(kinv);
+  return ret;
+}
+
+int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int DSA_set_ex_data(DSA *dsa, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&dsa->ex_data, idx, arg);
+}
+
+void *DSA_get_ex_data(const DSA *dsa, int idx) {
+  return CRYPTO_get_ex_data(&dsa->ex_data, idx);
+}
+
+DH *DSA_dup_DH(const DSA *dsa) {
+  if (dsa == NULL) {
+    return NULL;
+  }
+
+  DH *ret = DH_new();
+  if (ret == NULL) {
+    goto err;
+  }
+  if (dsa->q != NULL) {
+    ret->priv_length = BN_num_bits(dsa->q);
+    if ((ret->q = BN_dup(dsa->q)) == NULL) {
+      goto err;
+    }
+  }
+  if ((dsa->p != NULL && (ret->p = BN_dup(dsa->p)) == NULL) ||
+      (dsa->g != NULL && (ret->g = BN_dup(dsa->g)) == NULL) ||
+      (dsa->pub_key != NULL && (ret->pub_key = BN_dup(dsa->pub_key)) == NULL) ||
+      (dsa->priv_key != NULL &&
+       (ret->priv_key = BN_dup(dsa->priv_key)) == NULL)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  DH_free(ret);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c
new file mode 100644
index 0000000..2f62503
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c	
@@ -0,0 +1,339 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000. */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/dsa.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../bytestring/internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // A DSA object may be missing some components.
+    OPENSSL_PUT_ERROR(DSA, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+DSA_SIG *DSA_SIG_parse(CBS *cbs) {
+  DSA_SIG *ret = DSA_SIG_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->r) ||
+      !parse_integer(&child, &ret->s) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_SIG_marshal(CBB *cbb, const DSA_SIG *sig) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, sig->r) ||
+      !marshal_integer(&child, sig->s) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_public_key(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->pub_key) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_marshal_public_key(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dsa->pub_key) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_parameters(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_marshal_parameters(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_private_key(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&child, &version)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    goto err;
+  }
+
+  if (version != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_VERSION);
+    goto err;
+  }
+
+  if (!parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      !parse_integer(&child, &ret->pub_key) ||
+      !parse_integer(&child, &ret->priv_key) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    goto err;
+  }
+  return ret;
+
+err:
+  DSA_free(ret);
+  return NULL;
+}
+
+int DSA_marshal_private_key(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&child, 0 /* version */) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !marshal_integer(&child, dsa->pub_key) ||
+      !marshal_integer(&child, dsa->priv_key) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA_SIG *ret = DSA_SIG_parse(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out_sig != NULL) {
+    DSA_SIG_free(*out_sig);
+    *out_sig = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_SIG_marshal(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_public_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAPublicKey(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_public_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_private_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAPrivateKey(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_private_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_parameters(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAparams(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_parameters(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c.grpc_back
new file mode 100644
index 0000000..97fd07f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/dsa/dsa_asn1.c.grpc_back	
@@ -0,0 +1,339 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000. */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/dsa.h>
+
+#include <assert.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../bytestring/internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // A DSA object may be missing some components.
+    OPENSSL_PUT_ERROR(DSA, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+DSA_SIG *DSA_SIG_parse(CBS *cbs) {
+  DSA_SIG *ret = DSA_SIG_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->r) ||
+      !parse_integer(&child, &ret->s) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_SIG_marshal(CBB *cbb, const DSA_SIG *sig) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, sig->r) ||
+      !marshal_integer(&child, sig->s) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_public_key(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->pub_key) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_marshal_public_key(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dsa->pub_key) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_parameters(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    DSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int DSA_marshal_parameters(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA *DSA_parse_private_key(CBS *cbs) {
+  DSA *ret = DSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&child, &version)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    goto err;
+  }
+
+  if (version != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_BAD_VERSION);
+    goto err;
+  }
+
+  if (!parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->g) ||
+      !parse_integer(&child, &ret->pub_key) ||
+      !parse_integer(&child, &ret->priv_key) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_DECODE_ERROR);
+    goto err;
+  }
+  return ret;
+
+err:
+  DSA_free(ret);
+  return NULL;
+}
+
+int DSA_marshal_private_key(CBB *cbb, const DSA *dsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&child, 0 /* version */) ||
+      !marshal_integer(&child, dsa->p) ||
+      !marshal_integer(&child, dsa->q) ||
+      !marshal_integer(&child, dsa->g) ||
+      !marshal_integer(&child, dsa->pub_key) ||
+      !marshal_integer(&child, dsa->priv_key) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(DSA, DSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA_SIG *ret = DSA_SIG_parse(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out_sig != NULL) {
+    DSA_SIG_free(*out_sig);
+    *out_sig = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_SIG_marshal(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_public_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAPublicKey(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_public_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_private_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAPrivateKey(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_private_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  DSA *ret = DSA_parse_parameters(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    DSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_DSAparams(const DSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !DSA_marshal_parameters(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c
new file mode 100644
index 0000000..58e46d6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c	
@@ -0,0 +1,574 @@
+/* Written by Nils Larsch for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 2000-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ec.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "../fipsmodule/ec/internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static const unsigned kParametersTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0;
+static const unsigned kPublicKeyTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
+
+EC_KEY *EC_KEY_parse_private_key(CBS *cbs, const EC_GROUP *group) {
+  CBS ec_private_key, private_key;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &ec_private_key, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&ec_private_key, &version) ||
+      version != 1 ||
+      !CBS_get_asn1(&ec_private_key, &private_key, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse the optional parameters field.
+  EC_GROUP *inner_group = NULL;
+  EC_KEY *ret = NULL;
+  BIGNUM *priv_key = NULL;
+  if (CBS_peek_asn1_tag(&ec_private_key, kParametersTag)) {
+    // Per SEC 1, as an alternative to omitting it, one is allowed to specify
+    // this field and put in a NULL to mean inheriting this value. This was
+    // omitted in a previous version of this logic without problems, so leave it
+    // unimplemented.
+    CBS child;
+    if (!CBS_get_asn1(&ec_private_key, &child, kParametersTag)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+    inner_group = EC_KEY_parse_parameters(&child);
+    if (inner_group == NULL) {
+      goto err;
+    }
+    if (group == NULL) {
+      group = inner_group;
+    } else if (EC_GROUP_cmp(group, inner_group, NULL) != 0) {
+      // If a group was supplied externally, it must match.
+      OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+      goto err;
+    }
+    if (CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+  }
+
+  if (group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    goto err;
+  }
+
+  ret = EC_KEY_new();
+  if (ret == NULL || !EC_KEY_set_group(ret, group)) {
+    goto err;
+  }
+
+  // Although RFC 5915 specifies the length of the key, OpenSSL historically
+  // got this wrong, so accept any length. See upstream's
+  // 30cd4ff294252c4b6a4b69cbef6a5b4117705d22.
+  priv_key = BN_bin2bn(CBS_data(&private_key), CBS_len(&private_key), NULL);
+  ret->pub_key = EC_POINT_new(group);
+  if (priv_key == NULL || ret->pub_key == NULL ||
+      !EC_KEY_set_private_key(ret, priv_key)) {
+    goto err;
+  }
+
+  if (CBS_peek_asn1_tag(&ec_private_key, kPublicKeyTag)) {
+    CBS child, public_key;
+    uint8_t padding;
+    if (!CBS_get_asn1(&ec_private_key, &child, kPublicKeyTag) ||
+        !CBS_get_asn1(&child, &public_key, CBS_ASN1_BITSTRING) ||
+        // As in a SubjectPublicKeyInfo, the byte-encoded public key is then
+        // encoded as a BIT STRING with bits ordered as in the DER encoding.
+        !CBS_get_u8(&public_key, &padding) ||
+        padding != 0 ||
+        // Explicitly check |public_key| is non-empty to save the conversion
+        // form later.
+        CBS_len(&public_key) == 0 ||
+        !EC_POINT_oct2point(group, ret->pub_key, CBS_data(&public_key),
+                            CBS_len(&public_key), NULL) ||
+        CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+
+    // Save the point conversion form.
+    // TODO(davidben): Consider removing this.
+    ret->conv_form =
+        (point_conversion_form_t)(CBS_data(&public_key)[0] & ~0x01);
+  } else {
+    // Compute the public key instead.
+    if (!ec_point_mul_scalar_base(group, &ret->pub_key->raw,
+                                  &ret->priv_key->scalar)) {
+      goto err;
+    }
+    // Remember the original private-key-only encoding.
+    // TODO(davidben): Consider removing this.
+    ret->enc_flag |= EC_PKEY_NO_PUBKEY;
+  }
+
+  if (CBS_len(&ec_private_key) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    goto err;
+  }
+
+  // Ensure the resulting key is valid.
+  if (!EC_KEY_check_key(ret)) {
+    goto err;
+  }
+
+  BN_free(priv_key);
+  EC_GROUP_free(inner_group);
+  return ret;
+
+err:
+  EC_KEY_free(ret);
+  BN_free(priv_key);
+  EC_GROUP_free(inner_group);
+  return NULL;
+}
+
+int EC_KEY_marshal_private_key(CBB *cbb, const EC_KEY *key,
+                               unsigned enc_flags) {
+  if (key == NULL || key->group == NULL || key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  CBB ec_private_key, private_key;
+  if (!CBB_add_asn1(cbb, &ec_private_key, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&ec_private_key, 1 /* version */) ||
+      !CBB_add_asn1(&ec_private_key, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !BN_bn2cbb_padded(&private_key,
+                        BN_num_bytes(EC_GROUP_get0_order(key->group)),
+                        EC_KEY_get0_private_key(key))) {
+    OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  if (!(enc_flags & EC_PKEY_NO_PARAMETERS)) {
+    CBB child;
+    if (!CBB_add_asn1(&ec_private_key, &child, kParametersTag) ||
+        !EC_KEY_marshal_curve_name(&child, key->group) ||
+        !CBB_flush(&ec_private_key)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+      return 0;
+    }
+  }
+
+  // TODO(fork): replace this flexibility with sensible default?
+  if (!(enc_flags & EC_PKEY_NO_PUBKEY) && key->pub_key != NULL) {
+    CBB child, public_key;
+    if (!CBB_add_asn1(&ec_private_key, &child, kPublicKeyTag) ||
+        !CBB_add_asn1(&child, &public_key, CBS_ASN1_BITSTRING) ||
+        // As in a SubjectPublicKeyInfo, the byte-encoded public key is then
+        // encoded as a BIT STRING with bits ordered as in the DER encoding.
+        !CBB_add_u8(&public_key, 0 /* padding */) ||
+        !EC_POINT_point2cbb(&public_key, key->group, key->pub_key,
+                            key->conv_form, NULL) ||
+        !CBB_flush(&ec_private_key)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+      return 0;
+    }
+  }
+
+  if (!CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+// is_unsigned_integer returns one if |cbs| is a valid unsigned DER INTEGER and
+// zero otherwise.
+static int is_unsigned_integer(const CBS *cbs) {
+  if (CBS_len(cbs) == 0) {
+    return 0;
+  }
+  uint8_t byte = CBS_data(cbs)[0];
+  if ((byte & 0x80) ||
+      (byte == 0 && CBS_len(cbs) > 1 && (CBS_data(cbs)[1] & 0x80) == 0)) {
+    // Negative or not minimally-encoded.
+    return 0;
+  }
+  return 1;
+}
+
+// kPrimeFieldOID is the encoding of 1.2.840.10045.1.1.
+static const uint8_t kPrimeField[] = {0x2a, 0x86, 0x48, 0xce, 0x3d, 0x01, 0x01};
+
+static int parse_explicit_prime_curve(CBS *in, CBS *out_prime, CBS *out_a,
+                                      CBS *out_b, CBS *out_base_x,
+                                      CBS *out_base_y, CBS *out_order) {
+  // See RFC 3279, section 2.3.5. Note that RFC 3279 calls this structure an
+  // ECParameters while RFC 5480 calls it a SpecifiedECDomain.
+  CBS params, field_id, field_type, curve, base, cofactor;
+  int has_cofactor;
+  uint64_t version;
+  if (!CBS_get_asn1(in, &params, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&params, &version) ||
+      version != 1 ||
+      !CBS_get_asn1(&params, &field_id, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&field_id, &field_type, CBS_ASN1_OBJECT) ||
+      CBS_len(&field_type) != sizeof(kPrimeField) ||
+      OPENSSL_memcmp(CBS_data(&field_type), kPrimeField, sizeof(kPrimeField)) !=
+          0 ||
+      !CBS_get_asn1(&field_id, out_prime, CBS_ASN1_INTEGER) ||
+      !is_unsigned_integer(out_prime) ||
+      CBS_len(&field_id) != 0 ||
+      !CBS_get_asn1(&params, &curve, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&curve, out_a, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&curve, out_b, CBS_ASN1_OCTETSTRING) ||
+      // |curve| has an optional BIT STRING seed which we ignore.
+      !CBS_get_optional_asn1(&curve, NULL, NULL, CBS_ASN1_BITSTRING) ||
+      CBS_len(&curve) != 0 ||
+      !CBS_get_asn1(&params, &base, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&params, out_order, CBS_ASN1_INTEGER) ||
+      !is_unsigned_integer(out_order) ||
+      !CBS_get_optional_asn1(&params, &cofactor, &has_cofactor,
+                             CBS_ASN1_INTEGER) ||
+      CBS_len(&params) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (has_cofactor) {
+    // We only support prime-order curves so the cofactor must be one.
+    if (CBS_len(&cofactor) != 1 ||
+        CBS_data(&cofactor)[0] != 1) {
+      OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+      return 0;
+    }
+  }
+
+  // Require that the base point use uncompressed form.
+  uint8_t form;
+  if (!CBS_get_u8(&base, &form) || form != POINT_CONVERSION_UNCOMPRESSED) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FORM);
+    return 0;
+  }
+
+  if (CBS_len(&base) % 2 != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return 0;
+  }
+  size_t field_len = CBS_len(&base) / 2;
+  CBS_init(out_base_x, CBS_data(&base), field_len);
+  CBS_init(out_base_y, CBS_data(&base) + field_len, field_len);
+
+  return 1;
+}
+
+// integers_equal returns one if |a| and |b| are equal, up to leading zeros, and
+// zero otherwise.
+static int integers_equal(const CBS *a, const uint8_t *b, size_t b_len) {
+  // Remove leading zeros from |a| and |b|.
+  CBS a_copy = *a;
+  while (CBS_len(&a_copy) > 0 && CBS_data(&a_copy)[0] == 0) {
+    CBS_skip(&a_copy, 1);
+  }
+  while (b_len > 0 && b[0] == 0) {
+    b++;
+    b_len--;
+  }
+  return CBS_mem_equal(&a_copy, b, b_len);
+}
+
+EC_GROUP *EC_KEY_parse_curve_name(CBS *cbs) {
+  CBS named_curve;
+  if (!CBS_get_asn1(cbs, &named_curve, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Look for a matching curve.
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    if (CBS_len(&named_curve) == curve->oid_len &&
+        OPENSSL_memcmp(CBS_data(&named_curve), curve->oid, curve->oid_len) ==
+            0) {
+      return EC_GROUP_new_by_curve_name(curve->nid);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return NULL;
+}
+
+int EC_KEY_marshal_curve_name(CBB *cbb, const EC_GROUP *group) {
+  int nid = EC_GROUP_get_curve_name(group);
+  if (nid == NID_undef) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return 0;
+  }
+
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    if (curve->nid == nid) {
+      CBB child;
+      return CBB_add_asn1(cbb, &child, CBS_ASN1_OBJECT) &&
+             CBB_add_bytes(&child, curve->oid, curve->oid_len) &&
+             CBB_flush(cbb);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return 0;
+}
+
+EC_GROUP *EC_KEY_parse_parameters(CBS *cbs) {
+  if (!CBS_peek_asn1_tag(cbs, CBS_ASN1_SEQUENCE)) {
+    return EC_KEY_parse_curve_name(cbs);
+  }
+
+  // OpenSSL sometimes produces ECPrivateKeys with explicitly-encoded versions
+  // of named curves.
+  //
+  // TODO(davidben): Remove support for this.
+  CBS prime, a, b, base_x, base_y, order;
+  if (!parse_explicit_prime_curve(cbs, &prime, &a, &b, &base_x, &base_y,
+                                  &order)) {
+    return NULL;
+  }
+
+  // Look for a matching prime curve.
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    const unsigned param_len = curve->param_len;
+    // |curve->params| is ordered p, a, b, x, y, order, each component
+    // zero-padded up to the field length. Although SEC 1 states that the
+    // Field-Element-to-Octet-String conversion also pads, OpenSSL mis-encodes
+    // |a| and |b|, so this comparison must allow omitting leading zeros. (This
+    // is relevant for P-521 whose |b| has a leading 0.)
+    if (integers_equal(&prime, curve->params, param_len) &&
+        integers_equal(&a, curve->params + param_len, param_len) &&
+        integers_equal(&b, curve->params + param_len * 2, param_len) &&
+        integers_equal(&base_x, curve->params + param_len * 3, param_len) &&
+        integers_equal(&base_y, curve->params + param_len * 4, param_len) &&
+        integers_equal(&order, curve->params + param_len * 5, param_len)) {
+      return EC_GROUP_new_by_curve_name(curve->nid);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return NULL;
+}
+
+int EC_POINT_point2cbb(CBB *out, const EC_GROUP *group, const EC_POINT *point,
+                       point_conversion_form_t form, BN_CTX *ctx) {
+  size_t len = EC_POINT_point2oct(group, point, form, NULL, 0, ctx);
+  if (len == 0) {
+    return 0;
+  }
+  uint8_t *p;
+  return CBB_add_space(out, &p, len) &&
+         EC_POINT_point2oct(group, point, form, p, len, ctx) == len;
+}
+
+EC_KEY *d2i_ECPrivateKey(EC_KEY **out, const uint8_t **inp, long len) {
+  // This function treats its |out| parameter differently from other |d2i|
+  // functions. If supplied, take the group from |*out|.
+  const EC_GROUP *group = NULL;
+  if (out != NULL && *out != NULL) {
+    group = EC_KEY_get0_group(*out);
+  }
+
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EC_KEY *ret = EC_KEY_parse_private_key(&cbs, group);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    EC_KEY_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECPrivateKey(const EC_KEY *key, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !EC_KEY_marshal_private_key(&cbb, key, EC_KEY_get_enc_flags(key))) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+EC_KEY *d2i_ECParameters(EC_KEY **out_key, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EC_GROUP *group = EC_KEY_parse_parameters(&cbs);
+  if (group == NULL) {
+    return NULL;
+  }
+
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL || !EC_KEY_set_group(ret, group)) {
+    EC_GROUP_free(group);
+    EC_KEY_free(ret);
+    return NULL;
+  }
+  EC_GROUP_free(group);
+
+  if (out_key != NULL) {
+    EC_KEY_free(*out_key);
+    *out_key = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECParameters(const EC_KEY *key, uint8_t **outp) {
+  if (key == NULL || key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return -1;
+  }
+
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !EC_KEY_marshal_curve_name(&cbb, key->group)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+EC_KEY *o2i_ECPublicKey(EC_KEY **keyp, const uint8_t **inp, long len) {
+  EC_KEY *ret = NULL;
+
+  if (keyp == NULL || *keyp == NULL || (*keyp)->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+  ret = *keyp;
+  if (ret->pub_key == NULL &&
+      (ret->pub_key = EC_POINT_new(ret->group)) == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  if (!EC_POINT_oct2point(ret->group, ret->pub_key, *inp, len, NULL)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    return NULL;
+  }
+  // save the point conversion form
+  ret->conv_form = (point_conversion_form_t)(*inp[0] & ~0x01);
+  *inp += len;
+  return ret;
+}
+
+int i2o_ECPublicKey(const EC_KEY *key, uint8_t **outp) {
+  size_t buf_len = 0;
+  int new_buffer = 0;
+
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  buf_len = EC_POINT_point2oct(key->group, key->pub_key, key->conv_form, NULL,
+                               0, NULL);
+
+  if (outp == NULL || buf_len == 0) {
+    // out == NULL => just return the length of the octet string
+    return buf_len;
+  }
+
+  if (*outp == NULL) {
+    *outp = OPENSSL_malloc(buf_len);
+    if (*outp == NULL) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    new_buffer = 1;
+  }
+  if (!EC_POINT_point2oct(key->group, key->pub_key, key->conv_form, *outp,
+                          buf_len, NULL)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    if (new_buffer) {
+      OPENSSL_free(*outp);
+      *outp = NULL;
+    }
+    return 0;
+  }
+
+  if (!new_buffer) {
+    *outp += buf_len;
+  }
+  return buf_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c.grpc_back
new file mode 100644
index 0000000..9769d01
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_asn1.c.grpc_back	
@@ -0,0 +1,574 @@
+/* Written by Nils Larsch for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 2000-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ec.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "../fipsmodule/ec/internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static const unsigned kParametersTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0;
+static const unsigned kPublicKeyTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
+
+EC_KEY *EC_KEY_parse_private_key(CBS *cbs, const EC_GROUP *group) {
+  CBS ec_private_key, private_key;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &ec_private_key, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&ec_private_key, &version) ||
+      version != 1 ||
+      !CBS_get_asn1(&ec_private_key, &private_key, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse the optional parameters field.
+  EC_GROUP *inner_group = NULL;
+  EC_KEY *ret = NULL;
+  BIGNUM *priv_key = NULL;
+  if (CBS_peek_asn1_tag(&ec_private_key, kParametersTag)) {
+    // Per SEC 1, as an alternative to omitting it, one is allowed to specify
+    // this field and put in a NULL to mean inheriting this value. This was
+    // omitted in a previous version of this logic without problems, so leave it
+    // unimplemented.
+    CBS child;
+    if (!CBS_get_asn1(&ec_private_key, &child, kParametersTag)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+    inner_group = EC_KEY_parse_parameters(&child);
+    if (inner_group == NULL) {
+      goto err;
+    }
+    if (group == NULL) {
+      group = inner_group;
+    } else if (EC_GROUP_cmp(group, inner_group, NULL) != 0) {
+      // If a group was supplied externally, it must match.
+      OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+      goto err;
+    }
+    if (CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+  }
+
+  if (group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    goto err;
+  }
+
+  ret = EC_KEY_new();
+  if (ret == NULL || !EC_KEY_set_group(ret, group)) {
+    goto err;
+  }
+
+  // Although RFC 5915 specifies the length of the key, OpenSSL historically
+  // got this wrong, so accept any length. See upstream's
+  // 30cd4ff294252c4b6a4b69cbef6a5b4117705d22.
+  priv_key = BN_bin2bn(CBS_data(&private_key), CBS_len(&private_key), NULL);
+  ret->pub_key = EC_POINT_new(group);
+  if (priv_key == NULL || ret->pub_key == NULL ||
+      !EC_KEY_set_private_key(ret, priv_key)) {
+    goto err;
+  }
+
+  if (CBS_peek_asn1_tag(&ec_private_key, kPublicKeyTag)) {
+    CBS child, public_key;
+    uint8_t padding;
+    if (!CBS_get_asn1(&ec_private_key, &child, kPublicKeyTag) ||
+        !CBS_get_asn1(&child, &public_key, CBS_ASN1_BITSTRING) ||
+        // As in a SubjectPublicKeyInfo, the byte-encoded public key is then
+        // encoded as a BIT STRING with bits ordered as in the DER encoding.
+        !CBS_get_u8(&public_key, &padding) ||
+        padding != 0 ||
+        // Explicitly check |public_key| is non-empty to save the conversion
+        // form later.
+        CBS_len(&public_key) == 0 ||
+        !EC_POINT_oct2point(group, ret->pub_key, CBS_data(&public_key),
+                            CBS_len(&public_key), NULL) ||
+        CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+      goto err;
+    }
+
+    // Save the point conversion form.
+    // TODO(davidben): Consider removing this.
+    ret->conv_form =
+        (point_conversion_form_t)(CBS_data(&public_key)[0] & ~0x01);
+  } else {
+    // Compute the public key instead.
+    if (!ec_point_mul_scalar_base(group, &ret->pub_key->raw,
+                                  &ret->priv_key->scalar)) {
+      goto err;
+    }
+    // Remember the original private-key-only encoding.
+    // TODO(davidben): Consider removing this.
+    ret->enc_flag |= EC_PKEY_NO_PUBKEY;
+  }
+
+  if (CBS_len(&ec_private_key) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    goto err;
+  }
+
+  // Ensure the resulting key is valid.
+  if (!EC_KEY_check_key(ret)) {
+    goto err;
+  }
+
+  BN_free(priv_key);
+  EC_GROUP_free(inner_group);
+  return ret;
+
+err:
+  EC_KEY_free(ret);
+  BN_free(priv_key);
+  EC_GROUP_free(inner_group);
+  return NULL;
+}
+
+int EC_KEY_marshal_private_key(CBB *cbb, const EC_KEY *key,
+                               unsigned enc_flags) {
+  if (key == NULL || key->group == NULL || key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  CBB ec_private_key, private_key;
+  if (!CBB_add_asn1(cbb, &ec_private_key, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&ec_private_key, 1 /* version */) ||
+      !CBB_add_asn1(&ec_private_key, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !BN_bn2cbb_padded(&private_key,
+                        BN_num_bytes(EC_GROUP_get0_order(key->group)),
+                        EC_KEY_get0_private_key(key))) {
+    OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  if (!(enc_flags & EC_PKEY_NO_PARAMETERS)) {
+    CBB child;
+    if (!CBB_add_asn1(&ec_private_key, &child, kParametersTag) ||
+        !EC_KEY_marshal_curve_name(&child, key->group) ||
+        !CBB_flush(&ec_private_key)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+      return 0;
+    }
+  }
+
+  // TODO(fork): replace this flexibility with sensible default?
+  if (!(enc_flags & EC_PKEY_NO_PUBKEY) && key->pub_key != NULL) {
+    CBB child, public_key;
+    if (!CBB_add_asn1(&ec_private_key, &child, kPublicKeyTag) ||
+        !CBB_add_asn1(&child, &public_key, CBS_ASN1_BITSTRING) ||
+        // As in a SubjectPublicKeyInfo, the byte-encoded public key is then
+        // encoded as a BIT STRING with bits ordered as in the DER encoding.
+        !CBB_add_u8(&public_key, 0 /* padding */) ||
+        !EC_POINT_point2cbb(&public_key, key->group, key->pub_key,
+                            key->conv_form, NULL) ||
+        !CBB_flush(&ec_private_key)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+      return 0;
+    }
+  }
+
+  if (!CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+// is_unsigned_integer returns one if |cbs| is a valid unsigned DER INTEGER and
+// zero otherwise.
+static int is_unsigned_integer(const CBS *cbs) {
+  if (CBS_len(cbs) == 0) {
+    return 0;
+  }
+  uint8_t byte = CBS_data(cbs)[0];
+  if ((byte & 0x80) ||
+      (byte == 0 && CBS_len(cbs) > 1 && (CBS_data(cbs)[1] & 0x80) == 0)) {
+    // Negative or not minimally-encoded.
+    return 0;
+  }
+  return 1;
+}
+
+// kPrimeFieldOID is the encoding of 1.2.840.10045.1.1.
+static const uint8_t kPrimeField[] = {0x2a, 0x86, 0x48, 0xce, 0x3d, 0x01, 0x01};
+
+static int parse_explicit_prime_curve(CBS *in, CBS *out_prime, CBS *out_a,
+                                      CBS *out_b, CBS *out_base_x,
+                                      CBS *out_base_y, CBS *out_order) {
+  // See RFC 3279, section 2.3.5. Note that RFC 3279 calls this structure an
+  // ECParameters while RFC 5480 calls it a SpecifiedECDomain.
+  CBS params, field_id, field_type, curve, base, cofactor;
+  int has_cofactor;
+  uint64_t version;
+  if (!CBS_get_asn1(in, &params, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&params, &version) ||
+      version != 1 ||
+      !CBS_get_asn1(&params, &field_id, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&field_id, &field_type, CBS_ASN1_OBJECT) ||
+      CBS_len(&field_type) != sizeof(kPrimeField) ||
+      OPENSSL_memcmp(CBS_data(&field_type), kPrimeField, sizeof(kPrimeField)) !=
+          0 ||
+      !CBS_get_asn1(&field_id, out_prime, CBS_ASN1_INTEGER) ||
+      !is_unsigned_integer(out_prime) ||
+      CBS_len(&field_id) != 0 ||
+      !CBS_get_asn1(&params, &curve, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&curve, out_a, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&curve, out_b, CBS_ASN1_OCTETSTRING) ||
+      // |curve| has an optional BIT STRING seed which we ignore.
+      !CBS_get_optional_asn1(&curve, NULL, NULL, CBS_ASN1_BITSTRING) ||
+      CBS_len(&curve) != 0 ||
+      !CBS_get_asn1(&params, &base, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&params, out_order, CBS_ASN1_INTEGER) ||
+      !is_unsigned_integer(out_order) ||
+      !CBS_get_optional_asn1(&params, &cofactor, &has_cofactor,
+                             CBS_ASN1_INTEGER) ||
+      CBS_len(&params) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (has_cofactor) {
+    // We only support prime-order curves so the cofactor must be one.
+    if (CBS_len(&cofactor) != 1 ||
+        CBS_data(&cofactor)[0] != 1) {
+      OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+      return 0;
+    }
+  }
+
+  // Require that the base point use uncompressed form.
+  uint8_t form;
+  if (!CBS_get_u8(&base, &form) || form != POINT_CONVERSION_UNCOMPRESSED) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FORM);
+    return 0;
+  }
+
+  if (CBS_len(&base) % 2 != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return 0;
+  }
+  size_t field_len = CBS_len(&base) / 2;
+  CBS_init(out_base_x, CBS_data(&base), field_len);
+  CBS_init(out_base_y, CBS_data(&base) + field_len, field_len);
+
+  return 1;
+}
+
+// integers_equal returns one if |a| and |b| are equal, up to leading zeros, and
+// zero otherwise.
+static int integers_equal(const CBS *a, const uint8_t *b, size_t b_len) {
+  // Remove leading zeros from |a| and |b|.
+  CBS a_copy = *a;
+  while (CBS_len(&a_copy) > 0 && CBS_data(&a_copy)[0] == 0) {
+    CBS_skip(&a_copy, 1);
+  }
+  while (b_len > 0 && b[0] == 0) {
+    b++;
+    b_len--;
+  }
+  return CBS_mem_equal(&a_copy, b, b_len);
+}
+
+EC_GROUP *EC_KEY_parse_curve_name(CBS *cbs) {
+  CBS named_curve;
+  if (!CBS_get_asn1(cbs, &named_curve, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Look for a matching curve.
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    if (CBS_len(&named_curve) == curve->oid_len &&
+        OPENSSL_memcmp(CBS_data(&named_curve), curve->oid, curve->oid_len) ==
+            0) {
+      return EC_GROUP_new_by_curve_name(curve->nid);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return NULL;
+}
+
+int EC_KEY_marshal_curve_name(CBB *cbb, const EC_GROUP *group) {
+  int nid = EC_GROUP_get_curve_name(group);
+  if (nid == NID_undef) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return 0;
+  }
+
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    if (curve->nid == nid) {
+      CBB child;
+      return CBB_add_asn1(cbb, &child, CBS_ASN1_OBJECT) &&
+             CBB_add_bytes(&child, curve->oid, curve->oid_len) &&
+             CBB_flush(cbb);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return 0;
+}
+
+EC_GROUP *EC_KEY_parse_parameters(CBS *cbs) {
+  if (!CBS_peek_asn1_tag(cbs, CBS_ASN1_SEQUENCE)) {
+    return EC_KEY_parse_curve_name(cbs);
+  }
+
+  // OpenSSL sometimes produces ECPrivateKeys with explicitly-encoded versions
+  // of named curves.
+  //
+  // TODO(davidben): Remove support for this.
+  CBS prime, a, b, base_x, base_y, order;
+  if (!parse_explicit_prime_curve(cbs, &prime, &a, &b, &base_x, &base_y,
+                                  &order)) {
+    return NULL;
+  }
+
+  // Look for a matching prime curve.
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    const struct built_in_curve *curve = &curves->curves[i];
+    const unsigned param_len = curve->param_len;
+    // |curve->params| is ordered p, a, b, x, y, order, each component
+    // zero-padded up to the field length. Although SEC 1 states that the
+    // Field-Element-to-Octet-String conversion also pads, OpenSSL mis-encodes
+    // |a| and |b|, so this comparison must allow omitting leading zeros. (This
+    // is relevant for P-521 whose |b| has a leading 0.)
+    if (integers_equal(&prime, curve->params, param_len) &&
+        integers_equal(&a, curve->params + param_len, param_len) &&
+        integers_equal(&b, curve->params + param_len * 2, param_len) &&
+        integers_equal(&base_x, curve->params + param_len * 3, param_len) &&
+        integers_equal(&base_y, curve->params + param_len * 4, param_len) &&
+        integers_equal(&order, curve->params + param_len * 5, param_len)) {
+      return EC_GROUP_new_by_curve_name(curve->nid);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+  return NULL;
+}
+
+int EC_POINT_point2cbb(CBB *out, const EC_GROUP *group, const EC_POINT *point,
+                       point_conversion_form_t form, BN_CTX *ctx) {
+  size_t len = EC_POINT_point2oct(group, point, form, NULL, 0, ctx);
+  if (len == 0) {
+    return 0;
+  }
+  uint8_t *p;
+  return CBB_add_space(out, &p, len) &&
+         EC_POINT_point2oct(group, point, form, p, len, ctx) == len;
+}
+
+EC_KEY *d2i_ECPrivateKey(EC_KEY **out, const uint8_t **inp, long len) {
+  // This function treats its |out| parameter differently from other |d2i|
+  // functions. If supplied, take the group from |*out|.
+  const EC_GROUP *group = NULL;
+  if (out != NULL && *out != NULL) {
+    group = EC_KEY_get0_group(*out);
+  }
+
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_DECODE_ERROR);
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EC_KEY *ret = EC_KEY_parse_private_key(&cbs, group);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    EC_KEY_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECPrivateKey(const EC_KEY *key, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !EC_KEY_marshal_private_key(&cbb, key, EC_KEY_get_enc_flags(key))) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+EC_KEY *d2i_ECParameters(EC_KEY **out_key, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EC_GROUP *group = EC_KEY_parse_parameters(&cbs);
+  if (group == NULL) {
+    return NULL;
+  }
+
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL || !EC_KEY_set_group(ret, group)) {
+    EC_GROUP_free(group);
+    EC_KEY_free(ret);
+    return NULL;
+  }
+  EC_GROUP_free(group);
+
+  if (out_key != NULL) {
+    EC_KEY_free(*out_key);
+    *out_key = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECParameters(const EC_KEY *key, uint8_t **outp) {
+  if (key == NULL || key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return -1;
+  }
+
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !EC_KEY_marshal_curve_name(&cbb, key->group)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+EC_KEY *o2i_ECPublicKey(EC_KEY **keyp, const uint8_t **inp, long len) {
+  EC_KEY *ret = NULL;
+
+  if (keyp == NULL || *keyp == NULL || (*keyp)->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+  ret = *keyp;
+  if (ret->pub_key == NULL &&
+      (ret->pub_key = EC_POINT_new(ret->group)) == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  if (!EC_POINT_oct2point(ret->group, ret->pub_key, *inp, len, NULL)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    return NULL;
+  }
+  // save the point conversion form
+  ret->conv_form = (point_conversion_form_t)(*inp[0] & ~0x01);
+  *inp += len;
+  return ret;
+}
+
+int i2o_ECPublicKey(const EC_KEY *key, uint8_t **outp) {
+  size_t buf_len = 0;
+  int new_buffer = 0;
+
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  buf_len = EC_POINT_point2oct(key->group, key->pub_key, key->conv_form, NULL,
+                               0, NULL);
+
+  if (outp == NULL || buf_len == 0) {
+    // out == NULL => just return the length of the octet string
+    return buf_len;
+  }
+
+  if (*outp == NULL) {
+    *outp = OPENSSL_malloc(buf_len);
+    if (*outp == NULL) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    new_buffer = 1;
+  }
+  if (!EC_POINT_point2oct(key->group, key->pub_key, key->conv_form, *outp,
+                          buf_len, NULL)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    if (new_buffer) {
+      OPENSSL_free(*outp);
+      *outp = NULL;
+    }
+    return 0;
+  }
+
+  if (!new_buffer) {
+    *outp += buf_len;
+  }
+  return buf_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c
new file mode 100644
index 0000000..f906e95
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c	
@@ -0,0 +1,95 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ec_key.h>
+
+#include <string.h>
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/hkdf.h>
+#include <openssl_grpc/mem.h>
+
+#include "../fipsmodule/ec/internal.h"
+
+
+EC_KEY *EC_KEY_derive_from_secret(const EC_GROUP *group, const uint8_t *secret,
+                                  size_t secret_len) {
+#define EC_KEY_DERIVE_MAX_NAME_LEN 16
+  const char *name = EC_curve_nid2nist(EC_GROUP_get_curve_name(group));
+  if (name == NULL || strlen(name) > EC_KEY_DERIVE_MAX_NAME_LEN) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return NULL;
+  }
+
+  // Assemble a label string to provide some key separation in case |secret| is
+  // misused, but ultimately it's on the caller to ensure |secret| is suitably
+  // separated.
+  static const char kLabel[] = "derive EC key ";
+  char info[sizeof(kLabel) + EC_KEY_DERIVE_MAX_NAME_LEN];
+  OPENSSL_strlcpy(info, kLabel, sizeof(info));
+  OPENSSL_strlcat(info, name, sizeof(info));
+
+  // Generate 128 bits beyond the group order so the bias is at most 2^-128.
+#define EC_KEY_DERIVE_EXTRA_BITS 128
+#define EC_KEY_DERIVE_EXTRA_BYTES (EC_KEY_DERIVE_EXTRA_BITS / 8)
+
+  if (EC_GROUP_order_bits(group) <= EC_KEY_DERIVE_EXTRA_BITS + 8) {
+    // The reduction strategy below requires the group order be large enough.
+    // (The actual bound is a bit tighter, but our curves are much larger than
+    // 128-bit.)
+    OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+    return NULL;
+  }
+
+  uint8_t derived[EC_KEY_DERIVE_EXTRA_BYTES + EC_MAX_BYTES];
+  size_t derived_len = BN_num_bytes(&group->order) + EC_KEY_DERIVE_EXTRA_BYTES;
+  assert(derived_len <= sizeof(derived));
+  if (!HKDF(derived, derived_len, EVP_sha256(), secret, secret_len,
+            /*salt=*/NULL, /*salt_len=*/0, (const uint8_t *)info,
+            strlen(info))) {
+    return NULL;
+  }
+
+  EC_KEY *key = EC_KEY_new();
+  BN_CTX *ctx = BN_CTX_new();
+  BIGNUM *priv = BN_bin2bn(derived, derived_len, NULL);
+  EC_POINT *pub = EC_POINT_new(group);
+  if (key == NULL || ctx == NULL || priv == NULL || pub == NULL ||
+      // Reduce |priv| with Montgomery reduction. First, convert "from"
+      // Montgomery form to compute |priv| * R^-1 mod |order|. This requires
+      // |priv| be under order * R, which is true if the group order is large
+      // enough. 2^(num_bytes(order)) < 2^8 * order, so:
+      //
+      //    priv < 2^8 * order * 2^128 < order * order < order * R
+      !BN_from_montgomery(priv, priv, group->order_mont, ctx) ||
+      // Multiply by R^2 and do another Montgomery reduction to compute
+      // priv * R^-1 * R^2 * R^-1 = priv mod order.
+      !BN_to_montgomery(priv, priv, group->order_mont, ctx) ||
+      !EC_POINT_mul(group, pub, priv, NULL, NULL, ctx) ||
+      !EC_KEY_set_group(key, group) || !EC_KEY_set_public_key(key, pub) ||
+      !EC_KEY_set_private_key(key, priv)) {
+    EC_KEY_free(key);
+    key = NULL;
+    goto err;
+  }
+
+err:
+  OPENSSL_cleanse(derived, sizeof(derived));
+  BN_CTX_free(ctx);
+  BN_free(priv);
+  EC_POINT_free(pub);
+  return key;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c.grpc_back
new file mode 100644
index 0000000..6904d7b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ec_extra/ec_derive.c.grpc_back	
@@ -0,0 +1,95 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ec_key.h>
+
+#include <string.h>
+
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/digest.h>
+#include <openssl/hkdf.h>
+#include <openssl/mem.h>
+
+#include "../fipsmodule/ec/internal.h"
+
+
+EC_KEY *EC_KEY_derive_from_secret(const EC_GROUP *group, const uint8_t *secret,
+                                  size_t secret_len) {
+#define EC_KEY_DERIVE_MAX_NAME_LEN 16
+  const char *name = EC_curve_nid2nist(EC_GROUP_get_curve_name(group));
+  if (name == NULL || strlen(name) > EC_KEY_DERIVE_MAX_NAME_LEN) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return NULL;
+  }
+
+  // Assemble a label string to provide some key separation in case |secret| is
+  // misused, but ultimately it's on the caller to ensure |secret| is suitably
+  // separated.
+  static const char kLabel[] = "derive EC key ";
+  char info[sizeof(kLabel) + EC_KEY_DERIVE_MAX_NAME_LEN];
+  OPENSSL_strlcpy(info, kLabel, sizeof(info));
+  OPENSSL_strlcat(info, name, sizeof(info));
+
+  // Generate 128 bits beyond the group order so the bias is at most 2^-128.
+#define EC_KEY_DERIVE_EXTRA_BITS 128
+#define EC_KEY_DERIVE_EXTRA_BYTES (EC_KEY_DERIVE_EXTRA_BITS / 8)
+
+  if (EC_GROUP_order_bits(group) <= EC_KEY_DERIVE_EXTRA_BITS + 8) {
+    // The reduction strategy below requires the group order be large enough.
+    // (The actual bound is a bit tighter, but our curves are much larger than
+    // 128-bit.)
+    OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+    return NULL;
+  }
+
+  uint8_t derived[EC_KEY_DERIVE_EXTRA_BYTES + EC_MAX_BYTES];
+  size_t derived_len = BN_num_bytes(&group->order) + EC_KEY_DERIVE_EXTRA_BYTES;
+  assert(derived_len <= sizeof(derived));
+  if (!HKDF(derived, derived_len, EVP_sha256(), secret, secret_len,
+            /*salt=*/NULL, /*salt_len=*/0, (const uint8_t *)info,
+            strlen(info))) {
+    return NULL;
+  }
+
+  EC_KEY *key = EC_KEY_new();
+  BN_CTX *ctx = BN_CTX_new();
+  BIGNUM *priv = BN_bin2bn(derived, derived_len, NULL);
+  EC_POINT *pub = EC_POINT_new(group);
+  if (key == NULL || ctx == NULL || priv == NULL || pub == NULL ||
+      // Reduce |priv| with Montgomery reduction. First, convert "from"
+      // Montgomery form to compute |priv| * R^-1 mod |order|. This requires
+      // |priv| be under order * R, which is true if the group order is large
+      // enough. 2^(num_bytes(order)) < 2^8 * order, so:
+      //
+      //    priv < 2^8 * order * 2^128 < order * order < order * R
+      !BN_from_montgomery(priv, priv, group->order_mont, ctx) ||
+      // Multiply by R^2 and do another Montgomery reduction to compute
+      // priv * R^-1 * R^2 * R^-1 = priv mod order.
+      !BN_to_montgomery(priv, priv, group->order_mont, ctx) ||
+      !EC_POINT_mul(group, pub, priv, NULL, NULL, ctx) ||
+      !EC_KEY_set_group(key, group) || !EC_KEY_set_public_key(key, pub) ||
+      !EC_KEY_set_private_key(key, priv)) {
+    EC_KEY_free(key);
+    key = NULL;
+    goto err;
+  }
+
+err:
+  OPENSSL_cleanse(derived, sizeof(derived));
+  BN_CTX_free(ctx);
+  BN_free(priv);
+  EC_POINT_free(pub);
+  return key;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c
new file mode 100644
index 0000000..5626e05
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c	
@@ -0,0 +1,124 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ecdh.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+int ECDH_compute_key(void *out, size_t out_len, const EC_POINT *pub_key,
+                     const EC_KEY *priv_key,
+                     void *(*kdf)(const void *in, size_t inlen, void *out,
+                                  size_t *out_len)) {
+  if (priv_key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_NO_PRIVATE_VALUE);
+    return -1;
+  }
+  const EC_SCALAR *const priv = &priv_key->priv_key->scalar;
+  const EC_GROUP *const group = EC_KEY_get0_group(priv_key);
+  if (EC_GROUP_cmp(group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return -1;
+  }
+
+  EC_RAW_POINT shared_point;
+  uint8_t buf[EC_MAX_BYTES];
+  size_t buf_len;
+  if (!ec_point_mul_scalar(group, &shared_point, &pub_key->raw, priv) ||
+      !ec_point_get_affine_coordinate_bytes(group, buf, NULL, &buf_len,
+                                            sizeof(buf), &shared_point)) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_POINT_ARITHMETIC_FAILURE);
+    return -1;
+  }
+
+  if (kdf != NULL) {
+    if (kdf(buf, buf_len, out, &out_len) == NULL) {
+      OPENSSL_PUT_ERROR(ECDH, ECDH_R_KDF_FAILED);
+      return -1;
+    }
+  } else {
+    // no KDF, just copy as much as we can
+    if (buf_len < out_len) {
+      out_len = buf_len;
+    }
+    OPENSSL_memcpy(out, buf, out_len);
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(ECDH, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  return (int)out_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c.grpc_back
new file mode 100644
index 0000000..b8a099a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdh_extra/ecdh_extra.c.grpc_back	
@@ -0,0 +1,124 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ecdh.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+int ECDH_compute_key(void *out, size_t out_len, const EC_POINT *pub_key,
+                     const EC_KEY *priv_key,
+                     void *(*kdf)(const void *in, size_t inlen, void *out,
+                                  size_t *out_len)) {
+  if (priv_key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_NO_PRIVATE_VALUE);
+    return -1;
+  }
+  const EC_SCALAR *const priv = &priv_key->priv_key->scalar;
+  const EC_GROUP *const group = EC_KEY_get0_group(priv_key);
+  if (EC_GROUP_cmp(group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return -1;
+  }
+
+  EC_RAW_POINT shared_point;
+  uint8_t buf[EC_MAX_BYTES];
+  size_t buf_len;
+  if (!ec_point_mul_scalar(group, &shared_point, &pub_key->raw, priv) ||
+      !ec_point_get_affine_coordinate_bytes(group, buf, NULL, &buf_len,
+                                            sizeof(buf), &shared_point)) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_POINT_ARITHMETIC_FAILURE);
+    return -1;
+  }
+
+  if (kdf != NULL) {
+    if (kdf(buf, buf_len, out, &out_len) == NULL) {
+      OPENSSL_PUT_ERROR(ECDH, ECDH_R_KDF_FAILED);
+      return -1;
+    }
+  } else {
+    // no KDF, just copy as much as we can
+    if (buf_len < out_len) {
+      out_len = buf_len;
+    }
+    OPENSSL_memcpy(out, buf, out_len);
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(ECDH, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  return (int)out_len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c
new file mode 100644
index 0000000..0bb1e23
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c	
@@ -0,0 +1,267 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ecdsa.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/mem.h>
+
+#include "../bytestring/internal.h"
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+int ECDSA_sign(int type, const uint8_t *digest, size_t digest_len, uint8_t *sig,
+               unsigned int *sig_len, const EC_KEY *eckey) {
+  if (eckey->ecdsa_meth && eckey->ecdsa_meth->sign) {
+    return eckey->ecdsa_meth->sign(digest, digest_len, sig, sig_len,
+                                   (EC_KEY*) eckey /* cast away const */);
+  }
+
+  int ret = 0;
+  ECDSA_SIG *s = ECDSA_do_sign(digest, digest_len, eckey);
+  if (s == NULL) {
+    *sig_len = 0;
+    goto err;
+  }
+
+  CBB cbb;
+  CBB_zero(&cbb);
+  size_t len;
+  if (!CBB_init_fixed(&cbb, sig, ECDSA_size(eckey)) ||
+      !ECDSA_SIG_marshal(&cbb, s) ||
+      !CBB_finish(&cbb, NULL, &len)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    *sig_len = 0;
+    goto err;
+  }
+  *sig_len = (unsigned)len;
+  ret = 1;
+
+err:
+  ECDSA_SIG_free(s);
+  return ret;
+}
+
+int ECDSA_verify(int type, const uint8_t *digest, size_t digest_len,
+                 const uint8_t *sig, size_t sig_len, const EC_KEY *eckey) {
+  ECDSA_SIG *s;
+  int ret = 0;
+  uint8_t *der = NULL;
+
+  // Decode the ECDSA signature.
+  s = ECDSA_SIG_from_bytes(sig, sig_len);
+  if (s == NULL) {
+    goto err;
+  }
+
+  // Defend against potential laxness in the DER parser.
+  size_t der_len;
+  if (!ECDSA_SIG_to_bytes(&der, &der_len, s) ||
+      der_len != sig_len || OPENSSL_memcmp(sig, der, sig_len) != 0) {
+    // This should never happen. crypto/bytestring is strictly DER.
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = ECDSA_do_verify(digest, digest_len, s, eckey);
+
+err:
+  OPENSSL_free(der);
+  ECDSA_SIG_free(s);
+  return ret;
+}
+
+
+size_t ECDSA_size(const EC_KEY *key) {
+  if (key == NULL) {
+    return 0;
+  }
+
+  size_t group_order_size;
+  if (key->ecdsa_meth && key->ecdsa_meth->group_order_size) {
+    group_order_size = key->ecdsa_meth->group_order_size(key);
+  } else {
+    const EC_GROUP *group = EC_KEY_get0_group(key);
+    if (group == NULL) {
+      return 0;
+    }
+
+    group_order_size = BN_num_bytes(EC_GROUP_get0_order(group));
+  }
+
+  return ECDSA_SIG_max_len(group_order_size);
+}
+
+ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs) {
+  ECDSA_SIG *ret = ECDSA_SIG_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !BN_parse_asn1_unsigned(&child, ret->r) ||
+      !BN_parse_asn1_unsigned(&child, ret->s) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    ECDSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  ECDSA_SIG *ret = ECDSA_SIG_parse(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    ECDSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !BN_marshal_asn1(&child, sig->r) ||
+      !BN_marshal_asn1(&child, sig->s) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                       const ECDSA_SIG *sig) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !ECDSA_SIG_marshal(&cbb, sig) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+// der_len_len returns the number of bytes needed to represent a length of |len|
+// in DER.
+static size_t der_len_len(size_t len) {
+  if (len < 0x80) {
+    return 1;
+  }
+  size_t ret = 1;
+  while (len > 0) {
+    ret++;
+    len >>= 8;
+  }
+  return ret;
+}
+
+size_t ECDSA_SIG_max_len(size_t order_len) {
+  // Compute the maximum length of an |order_len| byte integer. Defensively
+  // assume that the leading 0x00 is included.
+  size_t integer_len = 1 /* tag */ + der_len_len(order_len + 1) + 1 + order_len;
+  if (integer_len < order_len) {
+    return 0;
+  }
+  // An ECDSA signature is two INTEGERs.
+  size_t value_len = 2 * integer_len;
+  if (value_len < integer_len) {
+    return 0;
+  }
+  // Add the header.
+  size_t ret = 1 /* tag */ + der_len_len(value_len) + value_len;
+  if (ret < value_len) {
+    return 0;
+  }
+  return ret;
+}
+
+ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  ECDSA_SIG *ret = ECDSA_SIG_parse(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    ECDSA_SIG_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !ECDSA_SIG_marshal(&cbb, sig)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c.grpc_back
new file mode 100644
index 0000000..e6212cc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ecdsa_extra/ecdsa_asn1.c.grpc_back	
@@ -0,0 +1,267 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ecdsa.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/ec_key.h>
+#include <openssl/mem.h>
+
+#include "../bytestring/internal.h"
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+int ECDSA_sign(int type, const uint8_t *digest, size_t digest_len, uint8_t *sig,
+               unsigned int *sig_len, const EC_KEY *eckey) {
+  if (eckey->ecdsa_meth && eckey->ecdsa_meth->sign) {
+    return eckey->ecdsa_meth->sign(digest, digest_len, sig, sig_len,
+                                   (EC_KEY*) eckey /* cast away const */);
+  }
+
+  int ret = 0;
+  ECDSA_SIG *s = ECDSA_do_sign(digest, digest_len, eckey);
+  if (s == NULL) {
+    *sig_len = 0;
+    goto err;
+  }
+
+  CBB cbb;
+  CBB_zero(&cbb);
+  size_t len;
+  if (!CBB_init_fixed(&cbb, sig, ECDSA_size(eckey)) ||
+      !ECDSA_SIG_marshal(&cbb, s) ||
+      !CBB_finish(&cbb, NULL, &len)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    *sig_len = 0;
+    goto err;
+  }
+  *sig_len = (unsigned)len;
+  ret = 1;
+
+err:
+  ECDSA_SIG_free(s);
+  return ret;
+}
+
+int ECDSA_verify(int type, const uint8_t *digest, size_t digest_len,
+                 const uint8_t *sig, size_t sig_len, const EC_KEY *eckey) {
+  ECDSA_SIG *s;
+  int ret = 0;
+  uint8_t *der = NULL;
+
+  // Decode the ECDSA signature.
+  s = ECDSA_SIG_from_bytes(sig, sig_len);
+  if (s == NULL) {
+    goto err;
+  }
+
+  // Defend against potential laxness in the DER parser.
+  size_t der_len;
+  if (!ECDSA_SIG_to_bytes(&der, &der_len, s) ||
+      der_len != sig_len || OPENSSL_memcmp(sig, der, sig_len) != 0) {
+    // This should never happen. crypto/bytestring is strictly DER.
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = ECDSA_do_verify(digest, digest_len, s, eckey);
+
+err:
+  OPENSSL_free(der);
+  ECDSA_SIG_free(s);
+  return ret;
+}
+
+
+size_t ECDSA_size(const EC_KEY *key) {
+  if (key == NULL) {
+    return 0;
+  }
+
+  size_t group_order_size;
+  if (key->ecdsa_meth && key->ecdsa_meth->group_order_size) {
+    group_order_size = key->ecdsa_meth->group_order_size(key);
+  } else {
+    const EC_GROUP *group = EC_KEY_get0_group(key);
+    if (group == NULL) {
+      return 0;
+    }
+
+    group_order_size = BN_num_bytes(EC_GROUP_get0_order(group));
+  }
+
+  return ECDSA_SIG_max_len(group_order_size);
+}
+
+ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs) {
+  ECDSA_SIG *ret = ECDSA_SIG_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !BN_parse_asn1_unsigned(&child, ret->r) ||
+      !BN_parse_asn1_unsigned(&child, ret->s) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    ECDSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  ECDSA_SIG *ret = ECDSA_SIG_parse(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    ECDSA_SIG_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !BN_marshal_asn1(&child, sig->r) ||
+      !BN_marshal_asn1(&child, sig->s) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                       const ECDSA_SIG *sig) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !ECDSA_SIG_marshal(&cbb, sig) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+// der_len_len returns the number of bytes needed to represent a length of |len|
+// in DER.
+static size_t der_len_len(size_t len) {
+  if (len < 0x80) {
+    return 1;
+  }
+  size_t ret = 1;
+  while (len > 0) {
+    ret++;
+    len >>= 8;
+  }
+  return ret;
+}
+
+size_t ECDSA_SIG_max_len(size_t order_len) {
+  // Compute the maximum length of an |order_len| byte integer. Defensively
+  // assume that the leading 0x00 is included.
+  size_t integer_len = 1 /* tag */ + der_len_len(order_len + 1) + 1 + order_len;
+  if (integer_len < order_len) {
+    return 0;
+  }
+  // An ECDSA signature is two INTEGERs.
+  size_t value_len = 2 * integer_len;
+  if (value_len < integer_len) {
+    return 0;
+  }
+  // Add the header.
+  size_t ret = 1 /* tag */ + der_len_len(value_len) + value_len;
+  if (ret < value_len) {
+    return 0;
+  }
+  return ret;
+}
+
+ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  ECDSA_SIG *ret = ECDSA_SIG_parse(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    ECDSA_SIG_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !ECDSA_SIG_marshal(&cbb, sig)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c
new file mode 100644
index 0000000..678d703
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c	
@@ -0,0 +1,99 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/engine.h>
+
+#include <string.h>
+#include <assert.h>
+
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+
+struct engine_st {
+  RSA_METHOD *rsa_method;
+  ECDSA_METHOD *ecdsa_method;
+};
+
+ENGINE *ENGINE_new(void) {
+  ENGINE *engine = OPENSSL_malloc(sizeof(ENGINE));
+  if (engine == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(engine, 0, sizeof(ENGINE));
+  return engine;
+}
+
+int ENGINE_free(ENGINE *engine) {
+  // Methods are currently required to be static so are not unref'ed.
+  OPENSSL_free(engine);
+  return 1;
+}
+
+// set_method takes a pointer to a method and its given size and sets
+// |*out_member| to point to it. This function might want to be extended in the
+// future to support making a copy of the method so that a stable ABI for
+// ENGINEs can be supported. But, for the moment, all *_METHODS must be
+// static.
+static int set_method(void **out_member, const void *method, size_t method_size,
+                      size_t compiled_size) {
+  const struct openssl_method_common_st *common = method;
+  if (method_size != compiled_size || !common->is_static) {
+    return 0;
+  }
+
+  *out_member = (void*) method;
+  return 1;
+}
+
+int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
+                         size_t method_size) {
+  return set_method((void **)&engine->rsa_method, method, method_size,
+                    sizeof(RSA_METHOD));
+}
+
+RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine) {
+  return engine->rsa_method;
+}
+
+int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
+                            size_t method_size) {
+  return set_method((void **)&engine->ecdsa_method, method, method_size,
+                    sizeof(ECDSA_METHOD));
+}
+
+ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine) {
+  return engine->ecdsa_method;
+}
+
+void METHOD_ref(void *method_in) {
+  assert(((struct openssl_method_common_st*) method_in)->is_static);
+}
+
+void METHOD_unref(void *method_in) {
+  struct openssl_method_common_st *method = method_in;
+
+  if (method == NULL) {
+    return;
+  }
+  assert(method->is_static);
+}
+
+OPENSSL_DECLARE_ERROR_REASON(ENGINE, OPERATION_NOT_SUPPORTED)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c.grpc_back
new file mode 100644
index 0000000..973a57c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/engine/engine.c.grpc_back	
@@ -0,0 +1,99 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/engine.h>
+
+#include <string.h>
+#include <assert.h>
+
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/rsa.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+
+struct engine_st {
+  RSA_METHOD *rsa_method;
+  ECDSA_METHOD *ecdsa_method;
+};
+
+ENGINE *ENGINE_new(void) {
+  ENGINE *engine = OPENSSL_malloc(sizeof(ENGINE));
+  if (engine == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(engine, 0, sizeof(ENGINE));
+  return engine;
+}
+
+int ENGINE_free(ENGINE *engine) {
+  // Methods are currently required to be static so are not unref'ed.
+  OPENSSL_free(engine);
+  return 1;
+}
+
+// set_method takes a pointer to a method and its given size and sets
+// |*out_member| to point to it. This function might want to be extended in the
+// future to support making a copy of the method so that a stable ABI for
+// ENGINEs can be supported. But, for the moment, all *_METHODS must be
+// static.
+static int set_method(void **out_member, const void *method, size_t method_size,
+                      size_t compiled_size) {
+  const struct openssl_method_common_st *common = method;
+  if (method_size != compiled_size || !common->is_static) {
+    return 0;
+  }
+
+  *out_member = (void*) method;
+  return 1;
+}
+
+int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
+                         size_t method_size) {
+  return set_method((void **)&engine->rsa_method, method, method_size,
+                    sizeof(RSA_METHOD));
+}
+
+RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine) {
+  return engine->rsa_method;
+}
+
+int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
+                            size_t method_size) {
+  return set_method((void **)&engine->ecdsa_method, method, method_size,
+                    sizeof(ECDSA_METHOD));
+}
+
+ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine) {
+  return engine->ecdsa_method;
+}
+
+void METHOD_ref(void *method_in) {
+  assert(((struct openssl_method_common_st*) method_in)->is_static);
+}
+
+void METHOD_unref(void *method_in) {
+  struct openssl_method_common_st *method = method_in;
+
+  if (method == NULL) {
+    return;
+  }
+  assert(method->is_static);
+}
+
+OPENSSL_DECLARE_ERROR_REASON(ENGINE, OPERATION_NOT_SUPPORTED)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c
new file mode 100644
index 0000000..5f05f1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c	
@@ -0,0 +1,849 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/err.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+#include "./internal.h"
+
+
+struct err_error_st {
+  // file contains the filename where the error occurred.
+  const char *file;
+  // data contains a NUL-terminated string with optional data. It must be freed
+  // with |OPENSSL_free|.
+  char *data;
+  // packed contains the error library and reason, as packed by ERR_PACK.
+  uint32_t packed;
+  // line contains the line number where the error occurred.
+  uint16_t line;
+  // mark indicates a reversion point in the queue. See |ERR_pop_to_mark|.
+  unsigned mark : 1;
+};
+
+// ERR_STATE contains the per-thread, error queue.
+typedef struct err_state_st {
+  // errors contains the ERR_NUM_ERRORS most recent errors, organised as a ring
+  // buffer.
+  struct err_error_st errors[ERR_NUM_ERRORS];
+  // top contains the index one past the most recent error. If |top| equals
+  // |bottom| then the queue is empty.
+  unsigned top;
+  // bottom contains the index of the last error in the queue.
+  unsigned bottom;
+
+  // to_free, if not NULL, contains a pointer owned by this structure that was
+  // previously a |data| pointer of one of the elements of |errors|.
+  void *to_free;
+} ERR_STATE;
+
+extern const uint32_t kOpenSSLReasonValues[];
+extern const size_t kOpenSSLReasonValuesLen;
+extern const char kOpenSSLReasonStringData[];
+
+// err_clear clears the given queued error.
+static void err_clear(struct err_error_st *error) {
+  OPENSSL_free(error->data);
+  OPENSSL_memset(error, 0, sizeof(struct err_error_st));
+}
+
+static void err_copy(struct err_error_st *dst, const struct err_error_st *src) {
+  err_clear(dst);
+  dst->file = src->file;
+  if (src->data != NULL) {
+    dst->data = OPENSSL_strdup(src->data);
+  }
+  dst->packed = src->packed;
+  dst->line = src->line;
+}
+
+// global_next_library contains the next custom library value to return.
+static int global_next_library = ERR_NUM_LIBS;
+
+// global_next_library_mutex protects |global_next_library| from concurrent
+// updates.
+static struct CRYPTO_STATIC_MUTEX global_next_library_mutex =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+static void err_state_free(void *statep) {
+  ERR_STATE *state = statep;
+
+  if (state == NULL) {
+    return;
+  }
+
+  for (unsigned i = 0; i < ERR_NUM_ERRORS; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->to_free);
+  OPENSSL_free(state);
+}
+
+// err_get_state gets the ERR_STATE object for the current thread.
+static ERR_STATE *err_get_state(void) {
+  ERR_STATE *state = CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_ERR);
+  if (state == NULL) {
+    state = OPENSSL_malloc(sizeof(ERR_STATE));
+    if (state == NULL) {
+      return NULL;
+    }
+    OPENSSL_memset(state, 0, sizeof(ERR_STATE));
+    if (!CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_ERR, state,
+                                 err_state_free)) {
+      return NULL;
+    }
+  }
+
+  return state;
+}
+
+static uint32_t get_error_values(int inc, int top, const char **file, int *line,
+                                 const char **data, int *flags) {
+  unsigned i = 0;
+  ERR_STATE *state;
+  struct err_error_st *error;
+  uint32_t ret;
+
+  state = err_get_state();
+  if (state == NULL || state->bottom == state->top) {
+    return 0;
+  }
+
+  if (top) {
+    assert(!inc);
+    // last error
+    i = state->top;
+  } else {
+    i = (state->bottom + 1) % ERR_NUM_ERRORS;
+  }
+
+  error = &state->errors[i];
+  ret = error->packed;
+
+  if (file != NULL && line != NULL) {
+    if (error->file == NULL) {
+      *file = "NA";
+      *line = 0;
+    } else {
+      *file = error->file;
+      *line = error->line;
+    }
+  }
+
+  if (data != NULL) {
+    if (error->data == NULL) {
+      *data = "";
+      if (flags != NULL) {
+        *flags = 0;
+      }
+    } else {
+      *data = error->data;
+      if (flags != NULL) {
+        *flags = ERR_FLAG_STRING;
+      }
+      // If this error is being removed, take ownership of data from
+      // the error. The semantics are such that the caller doesn't
+      // take ownership either. Instead the error system takes
+      // ownership and retains it until the next call that affects the
+      // error queue.
+      if (inc) {
+        if (error->data != NULL) {
+          OPENSSL_free(state->to_free);
+          state->to_free = error->data;
+        }
+        error->data = NULL;
+      }
+    }
+  }
+
+  if (inc) {
+    assert(!top);
+    err_clear(error);
+    state->bottom = i;
+  }
+
+  return ret;
+}
+
+uint32_t ERR_get_error(void) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line(const char **file, int *line) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line_data(const char **file, int *line,
+                                 const char **data, int *flags) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, file, line, data, flags);
+}
+
+uint32_t ERR_peek_error(void) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line(const char **file, int *line) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line_data(const char **file, int *line,
+                                  const char **data, int *flags) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, file, line, data,
+                          flags);
+}
+
+uint32_t ERR_peek_last_error(void) {
+  return get_error_values(0 /* peek */, 1 /* top */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line(const char **file, int *line) {
+  return get_error_values(0 /* peek */, 1 /* top */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line_data(const char **file, int *line,
+                                       const char **data, int *flags) {
+  return get_error_values(0 /* peek */, 1 /* top */, file, line, data, flags);
+}
+
+void ERR_clear_error(void) {
+  ERR_STATE *const state = err_get_state();
+  unsigned i;
+
+  if (state == NULL) {
+    return;
+  }
+
+  for (i = 0; i < ERR_NUM_ERRORS; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->to_free);
+  state->to_free = NULL;
+
+  state->top = state->bottom = 0;
+}
+
+void ERR_remove_thread_state(const CRYPTO_THREADID *tid) {
+  if (tid != NULL) {
+    assert(0);
+    return;
+  }
+
+  ERR_clear_error();
+}
+
+int ERR_get_next_error_library(void) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_next_library_mutex);
+  ret = global_next_library++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_next_library_mutex);
+
+  return ret;
+}
+
+void ERR_remove_state(unsigned long pid) {
+  ERR_clear_error();
+}
+
+void ERR_clear_system_error(void) {
+  errno = 0;
+}
+
+char *ERR_error_string(uint32_t packed_error, char *ret) {
+  static char buf[ERR_ERROR_STRING_BUF_LEN];
+
+  if (ret == NULL) {
+    // TODO(fork): remove this.
+    ret = buf;
+  }
+
+#if !defined(NDEBUG)
+  // This is aimed to help catch callers who don't provide
+  // |ERR_ERROR_STRING_BUF_LEN| bytes of space.
+  OPENSSL_memset(ret, 0, ERR_ERROR_STRING_BUF_LEN);
+#endif
+
+  return ERR_error_string_n(packed_error, ret, ERR_ERROR_STRING_BUF_LEN);
+}
+
+char *ERR_error_string_n(uint32_t packed_error, char *buf, size_t len) {
+  char lib_buf[64], reason_buf[64];
+  const char *lib_str, *reason_str;
+  unsigned lib, reason;
+
+  if (len == 0) {
+    return NULL;
+  }
+
+  lib = ERR_GET_LIB(packed_error);
+  reason = ERR_GET_REASON(packed_error);
+
+  lib_str = ERR_lib_error_string(packed_error);
+  reason_str = ERR_reason_error_string(packed_error);
+
+  if (lib_str == NULL) {
+    BIO_snprintf(lib_buf, sizeof(lib_buf), "lib(%u)", lib);
+    lib_str = lib_buf;
+  }
+
+ if (reason_str == NULL) {
+    BIO_snprintf(reason_buf, sizeof(reason_buf), "reason(%u)", reason);
+    reason_str = reason_buf;
+  }
+
+  BIO_snprintf(buf, len, "error:%08" PRIx32 ":%s:OPENSSL_internal:%s",
+               packed_error, lib_str, reason_str);
+
+  if (strlen(buf) == len - 1) {
+    // output may be truncated; make sure we always have 5 colon-separated
+    // fields, i.e. 4 colons.
+    static const unsigned num_colons = 4;
+    unsigned i;
+    char *s = buf;
+
+    if (len <= num_colons) {
+      // In this situation it's not possible to ensure that the correct number
+      // of colons are included in the output.
+      return buf;
+    }
+
+    for (i = 0; i < num_colons; i++) {
+      char *colon = strchr(s, ':');
+      char *last_pos = &buf[len - 1] - num_colons + i;
+
+      if (colon == NULL || colon > last_pos) {
+        // set colon |i| at last possible position (buf[len-1] is the
+        // terminating 0). If we're setting this colon, then all whole of the
+        // rest of the string must be colons in order to have the correct
+        // number.
+        OPENSSL_memset(last_pos, ':', num_colons - i);
+        break;
+      }
+
+      s = colon + 1;
+    }
+  }
+
+  return buf;
+}
+
+// err_string_cmp is a compare function for searching error values with
+// |bsearch| in |err_string_lookup|.
+static int err_string_cmp(const void *a, const void *b) {
+  const uint32_t a_key = *((const uint32_t*) a) >> 15;
+  const uint32_t b_key = *((const uint32_t*) b) >> 15;
+
+  if (a_key < b_key) {
+    return -1;
+  } else if (a_key > b_key) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+// err_string_lookup looks up the string associated with |lib| and |key| in
+// |values| and |string_data|. It returns the string or NULL if not found.
+static const char *err_string_lookup(uint32_t lib, uint32_t key,
+                                     const uint32_t *values,
+                                     size_t num_values,
+                                     const char *string_data) {
+  // |values| points to data in err_data.h, which is generated by
+  // err_data_generate.go. It's an array of uint32_t values. Each value has the
+  // following structure:
+  //   | lib  |    key    |    offset     |
+  //   |6 bits|  11 bits  |    15 bits    |
+  //
+  // The |lib| value is a library identifier: one of the |ERR_LIB_*| values.
+  // The |key| is a reason code, depending on the context.
+  // The |offset| is the number of bytes from the start of |string_data| where
+  // the (NUL terminated) string for this value can be found.
+  //
+  // Values are sorted based on treating the |lib| and |key| part as an
+  // unsigned integer.
+  if (lib >= (1 << 6) || key >= (1 << 11)) {
+    return NULL;
+  }
+  uint32_t search_key = lib << 26 | key << 15;
+  const uint32_t *result = bsearch(&search_key, values, num_values,
+                                   sizeof(uint32_t), err_string_cmp);
+  if (result == NULL) {
+    return NULL;
+  }
+
+  return &string_data[(*result) & 0x7fff];
+}
+
+static const char *const kLibraryNames[ERR_NUM_LIBS] = {
+    "invalid library (0)",
+    "unknown library",                            // ERR_LIB_NONE
+    "system library",                             // ERR_LIB_SYS
+    "bignum routines",                            // ERR_LIB_BN
+    "RSA routines",                               // ERR_LIB_RSA
+    "Diffie-Hellman routines",                    // ERR_LIB_DH
+    "public key routines",                        // ERR_LIB_EVP
+    "memory buffer routines",                     // ERR_LIB_BUF
+    "object identifier routines",                 // ERR_LIB_OBJ
+    "PEM routines",                               // ERR_LIB_PEM
+    "DSA routines",                               // ERR_LIB_DSA
+    "X.509 certificate routines",                 // ERR_LIB_X509
+    "ASN.1 encoding routines",                    // ERR_LIB_ASN1
+    "configuration file routines",                // ERR_LIB_CONF
+    "common libcrypto routines",                  // ERR_LIB_CRYPTO
+    "elliptic curve routines",                    // ERR_LIB_EC
+    "SSL routines",                               // ERR_LIB_SSL
+    "BIO routines",                               // ERR_LIB_BIO
+    "PKCS7 routines",                             // ERR_LIB_PKCS7
+    "PKCS8 routines",                             // ERR_LIB_PKCS8
+    "X509 V3 routines",                           // ERR_LIB_X509V3
+    "random number generator",                    // ERR_LIB_RAND
+    "ENGINE routines",                            // ERR_LIB_ENGINE
+    "OCSP routines",                              // ERR_LIB_OCSP
+    "UI routines",                                // ERR_LIB_UI
+    "COMP routines",                              // ERR_LIB_COMP
+    "ECDSA routines",                             // ERR_LIB_ECDSA
+    "ECDH routines",                              // ERR_LIB_ECDH
+    "HMAC routines",                              // ERR_LIB_HMAC
+    "Digest functions",                           // ERR_LIB_DIGEST
+    "Cipher functions",                           // ERR_LIB_CIPHER
+    "HKDF functions",                             // ERR_LIB_HKDF
+    "User defined functions",                     // ERR_LIB_USER
+};
+
+const char *ERR_lib_error_string(uint32_t packed_error) {
+  const uint32_t lib = ERR_GET_LIB(packed_error);
+
+  if (lib >= ERR_NUM_LIBS) {
+    return NULL;
+  }
+  return kLibraryNames[lib];
+}
+
+const char *ERR_func_error_string(uint32_t packed_error) {
+  return "OPENSSL_internal";
+}
+
+const char *ERR_reason_error_string(uint32_t packed_error) {
+  const uint32_t lib = ERR_GET_LIB(packed_error);
+  const uint32_t reason = ERR_GET_REASON(packed_error);
+
+  if (lib == ERR_LIB_SYS) {
+    if (reason < 127) {
+      return strerror(reason);
+    }
+    return NULL;
+  }
+
+  if (reason < ERR_NUM_LIBS) {
+    return kLibraryNames[reason];
+  }
+
+  if (reason < 100) {
+    switch (reason) {
+      case ERR_R_MALLOC_FAILURE:
+        return "malloc failure";
+      case ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED:
+        return "function should not have been called";
+      case ERR_R_PASSED_NULL_PARAMETER:
+        return "passed a null parameter";
+      case ERR_R_INTERNAL_ERROR:
+        return "internal error";
+      case ERR_R_OVERFLOW:
+        return "overflow";
+      default:
+        return NULL;
+    }
+  }
+
+  return err_string_lookup(lib, reason, kOpenSSLReasonValues,
+                           kOpenSSLReasonValuesLen, kOpenSSLReasonStringData);
+}
+
+void ERR_print_errors_cb(ERR_print_errors_callback_t callback, void *ctx) {
+  char buf[ERR_ERROR_STRING_BUF_LEN];
+  char buf2[1024];
+  const char *file, *data;
+  int line, flags;
+  uint32_t packed_error;
+
+  // thread_hash is the least-significant bits of the |ERR_STATE| pointer value
+  // for this thread.
+  const unsigned long thread_hash = (uintptr_t) err_get_state();
+
+  for (;;) {
+    packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
+    if (packed_error == 0) {
+      break;
+    }
+
+    ERR_error_string_n(packed_error, buf, sizeof(buf));
+    BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", thread_hash, buf,
+                 file, line, (flags & ERR_FLAG_STRING) ? data : "");
+    if (callback(buf2, strlen(buf2), ctx) <= 0) {
+      break;
+    }
+  }
+}
+
+static int print_errors_to_file(const char* msg, size_t msg_len, void* ctx) {
+  assert(msg[msg_len] == '\0');
+  FILE* fp = ctx;
+  int res = fputs(msg, fp);
+  return res < 0 ? 0 : 1;
+}
+
+void ERR_print_errors_fp(FILE *file) {
+  ERR_print_errors_cb(print_errors_to_file, file);
+}
+
+// err_set_error_data sets the data on the most recent error.
+static void err_set_error_data(char *data) {
+  ERR_STATE *const state = err_get_state();
+  struct err_error_st *error;
+
+  if (state == NULL || state->top == state->bottom) {
+    OPENSSL_free(data);
+    return;
+  }
+
+  error = &state->errors[state->top];
+
+  OPENSSL_free(error->data);
+  error->data = data;
+}
+
+void ERR_put_error(int library, int unused, int reason, const char *file,
+                   unsigned line) {
+  ERR_STATE *const state = err_get_state();
+  struct err_error_st *error;
+
+  if (state == NULL) {
+    return;
+  }
+
+  if (library == ERR_LIB_SYS && reason == 0) {
+#if defined(OPENSSL_WINDOWS)
+    reason = GetLastError();
+#else
+    reason = errno;
+#endif
+  }
+
+  state->top = (state->top + 1) % ERR_NUM_ERRORS;
+  if (state->top == state->bottom) {
+    state->bottom = (state->bottom + 1) % ERR_NUM_ERRORS;
+  }
+
+  error = &state->errors[state->top];
+  err_clear(error);
+  error->file = file;
+  error->line = line;
+  error->packed = ERR_PACK(library, reason);
+}
+
+// ERR_add_error_data_vdata takes a variable number of const char* pointers,
+// concatenates them and sets the result as the data on the most recent
+// error.
+static void err_add_error_vdata(unsigned num, va_list args) {
+  size_t alloced, new_len, len = 0, substr_len;
+  char *buf;
+  const char *substr;
+  unsigned i;
+
+  alloced = 80;
+  buf = OPENSSL_malloc(alloced + 1);
+  if (buf == NULL) {
+    return;
+  }
+
+  for (i = 0; i < num; i++) {
+    substr = va_arg(args, const char *);
+    if (substr == NULL) {
+      continue;
+    }
+
+    substr_len = strlen(substr);
+    new_len = len + substr_len;
+    if (new_len > alloced) {
+      char *new_buf;
+
+      if (alloced + 20 + 1 < alloced) {
+        // overflow.
+        OPENSSL_free(buf);
+        return;
+      }
+
+      alloced = new_len + 20;
+      new_buf = OPENSSL_realloc(buf, alloced + 1);
+      if (new_buf == NULL) {
+        OPENSSL_free(buf);
+        return;
+      }
+      buf = new_buf;
+    }
+
+    OPENSSL_memcpy(buf + len, substr, substr_len);
+    len = new_len;
+  }
+
+  buf[len] = 0;
+  err_set_error_data(buf);
+}
+
+void ERR_add_error_data(unsigned count, ...) {
+  va_list args;
+  va_start(args, count);
+  err_add_error_vdata(count, args);
+  va_end(args);
+}
+
+void ERR_add_error_dataf(const char *format, ...) {
+  va_list ap;
+  char *buf;
+  static const unsigned buf_len = 256;
+
+  // A fixed-size buffer is used because va_copy (which would be needed in
+  // order to call vsnprintf twice and measure the buffer) wasn't defined until
+  // C99.
+  buf = OPENSSL_malloc(buf_len + 1);
+  if (buf == NULL) {
+    return;
+  }
+
+  va_start(ap, format);
+  BIO_vsnprintf(buf, buf_len, format, ap);
+  buf[buf_len] = 0;
+  va_end(ap);
+
+  err_set_error_data(buf);
+}
+
+int ERR_set_mark(void) {
+  ERR_STATE *const state = err_get_state();
+
+  if (state == NULL || state->bottom == state->top) {
+    return 0;
+  }
+  state->errors[state->top].mark = 1;
+  return 1;
+}
+
+int ERR_pop_to_mark(void) {
+  ERR_STATE *const state = err_get_state();
+
+  if (state == NULL) {
+    return 0;
+  }
+
+  while (state->bottom != state->top) {
+    struct err_error_st *error = &state->errors[state->top];
+
+    if (error->mark) {
+      error->mark = 0;
+      return 1;
+    }
+
+    err_clear(error);
+    if (state->top == 0) {
+      state->top = ERR_NUM_ERRORS - 1;
+    } else {
+      state->top--;
+    }
+  }
+
+  return 0;
+}
+
+void ERR_load_crypto_strings(void) {}
+
+void ERR_free_strings(void) {}
+
+void ERR_load_BIO_strings(void) {}
+
+void ERR_load_ERR_strings(void) {}
+
+void ERR_load_RAND_strings(void) {}
+
+struct err_save_state_st {
+  struct err_error_st *errors;
+  size_t num_errors;
+};
+
+void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state) {
+  if (state == NULL) {
+    return;
+  }
+  for (size_t i = 0; i < state->num_errors; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->errors);
+  OPENSSL_free(state);
+}
+
+ERR_SAVE_STATE *ERR_save_state(void) {
+  ERR_STATE *const state = err_get_state();
+  if (state == NULL || state->top == state->bottom) {
+    return NULL;
+  }
+
+  ERR_SAVE_STATE *ret = OPENSSL_malloc(sizeof(ERR_SAVE_STATE));
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  // Errors are stored in the range (bottom, top].
+  size_t num_errors = state->top >= state->bottom
+                          ? state->top - state->bottom
+                          : ERR_NUM_ERRORS + state->top - state->bottom;
+  assert(num_errors < ERR_NUM_ERRORS);
+  ret->errors = OPENSSL_malloc(num_errors * sizeof(struct err_error_st));
+  if (ret->errors == NULL) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+  OPENSSL_memset(ret->errors, 0, num_errors * sizeof(struct err_error_st));
+  ret->num_errors = num_errors;
+
+  for (size_t i = 0; i < num_errors; i++) {
+    size_t j = (state->bottom + i + 1) % ERR_NUM_ERRORS;
+    err_copy(&ret->errors[i], &state->errors[j]);
+  }
+  return ret;
+}
+
+void ERR_restore_state(const ERR_SAVE_STATE *state) {
+  if (state == NULL || state->num_errors == 0) {
+    ERR_clear_error();
+    return;
+  }
+
+  ERR_STATE *const dst = err_get_state();
+  if (dst == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < state->num_errors; i++) {
+    err_copy(&dst->errors[i], &state->errors[i]);
+  }
+  dst->top = state->num_errors - 1;
+  dst->bottom = ERR_NUM_ERRORS - 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c.grpc_back
new file mode 100644
index 0000000..a432ce3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/err.c.grpc_back	
@@ -0,0 +1,849 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/err.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+#include "./internal.h"
+
+
+struct err_error_st {
+  // file contains the filename where the error occurred.
+  const char *file;
+  // data contains a NUL-terminated string with optional data. It must be freed
+  // with |OPENSSL_free|.
+  char *data;
+  // packed contains the error library and reason, as packed by ERR_PACK.
+  uint32_t packed;
+  // line contains the line number where the error occurred.
+  uint16_t line;
+  // mark indicates a reversion point in the queue. See |ERR_pop_to_mark|.
+  unsigned mark : 1;
+};
+
+// ERR_STATE contains the per-thread, error queue.
+typedef struct err_state_st {
+  // errors contains the ERR_NUM_ERRORS most recent errors, organised as a ring
+  // buffer.
+  struct err_error_st errors[ERR_NUM_ERRORS];
+  // top contains the index one past the most recent error. If |top| equals
+  // |bottom| then the queue is empty.
+  unsigned top;
+  // bottom contains the index of the last error in the queue.
+  unsigned bottom;
+
+  // to_free, if not NULL, contains a pointer owned by this structure that was
+  // previously a |data| pointer of one of the elements of |errors|.
+  void *to_free;
+} ERR_STATE;
+
+extern const uint32_t kOpenSSLReasonValues[];
+extern const size_t kOpenSSLReasonValuesLen;
+extern const char kOpenSSLReasonStringData[];
+
+// err_clear clears the given queued error.
+static void err_clear(struct err_error_st *error) {
+  OPENSSL_free(error->data);
+  OPENSSL_memset(error, 0, sizeof(struct err_error_st));
+}
+
+static void err_copy(struct err_error_st *dst, const struct err_error_st *src) {
+  err_clear(dst);
+  dst->file = src->file;
+  if (src->data != NULL) {
+    dst->data = OPENSSL_strdup(src->data);
+  }
+  dst->packed = src->packed;
+  dst->line = src->line;
+}
+
+// global_next_library contains the next custom library value to return.
+static int global_next_library = ERR_NUM_LIBS;
+
+// global_next_library_mutex protects |global_next_library| from concurrent
+// updates.
+static struct CRYPTO_STATIC_MUTEX global_next_library_mutex =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+static void err_state_free(void *statep) {
+  ERR_STATE *state = statep;
+
+  if (state == NULL) {
+    return;
+  }
+
+  for (unsigned i = 0; i < ERR_NUM_ERRORS; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->to_free);
+  OPENSSL_free(state);
+}
+
+// err_get_state gets the ERR_STATE object for the current thread.
+static ERR_STATE *err_get_state(void) {
+  ERR_STATE *state = CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_ERR);
+  if (state == NULL) {
+    state = OPENSSL_malloc(sizeof(ERR_STATE));
+    if (state == NULL) {
+      return NULL;
+    }
+    OPENSSL_memset(state, 0, sizeof(ERR_STATE));
+    if (!CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_ERR, state,
+                                 err_state_free)) {
+      return NULL;
+    }
+  }
+
+  return state;
+}
+
+static uint32_t get_error_values(int inc, int top, const char **file, int *line,
+                                 const char **data, int *flags) {
+  unsigned i = 0;
+  ERR_STATE *state;
+  struct err_error_st *error;
+  uint32_t ret;
+
+  state = err_get_state();
+  if (state == NULL || state->bottom == state->top) {
+    return 0;
+  }
+
+  if (top) {
+    assert(!inc);
+    // last error
+    i = state->top;
+  } else {
+    i = (state->bottom + 1) % ERR_NUM_ERRORS;
+  }
+
+  error = &state->errors[i];
+  ret = error->packed;
+
+  if (file != NULL && line != NULL) {
+    if (error->file == NULL) {
+      *file = "NA";
+      *line = 0;
+    } else {
+      *file = error->file;
+      *line = error->line;
+    }
+  }
+
+  if (data != NULL) {
+    if (error->data == NULL) {
+      *data = "";
+      if (flags != NULL) {
+        *flags = 0;
+      }
+    } else {
+      *data = error->data;
+      if (flags != NULL) {
+        *flags = ERR_FLAG_STRING;
+      }
+      // If this error is being removed, take ownership of data from
+      // the error. The semantics are such that the caller doesn't
+      // take ownership either. Instead the error system takes
+      // ownership and retains it until the next call that affects the
+      // error queue.
+      if (inc) {
+        if (error->data != NULL) {
+          OPENSSL_free(state->to_free);
+          state->to_free = error->data;
+        }
+        error->data = NULL;
+      }
+    }
+  }
+
+  if (inc) {
+    assert(!top);
+    err_clear(error);
+    state->bottom = i;
+  }
+
+  return ret;
+}
+
+uint32_t ERR_get_error(void) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line(const char **file, int *line) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line_data(const char **file, int *line,
+                                 const char **data, int *flags) {
+  return get_error_values(1 /* inc */, 0 /* bottom */, file, line, data, flags);
+}
+
+uint32_t ERR_peek_error(void) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line(const char **file, int *line) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line_data(const char **file, int *line,
+                                  const char **data, int *flags) {
+  return get_error_values(0 /* peek */, 0 /* bottom */, file, line, data,
+                          flags);
+}
+
+uint32_t ERR_peek_last_error(void) {
+  return get_error_values(0 /* peek */, 1 /* top */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line(const char **file, int *line) {
+  return get_error_values(0 /* peek */, 1 /* top */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line_data(const char **file, int *line,
+                                       const char **data, int *flags) {
+  return get_error_values(0 /* peek */, 1 /* top */, file, line, data, flags);
+}
+
+void ERR_clear_error(void) {
+  ERR_STATE *const state = err_get_state();
+  unsigned i;
+
+  if (state == NULL) {
+    return;
+  }
+
+  for (i = 0; i < ERR_NUM_ERRORS; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->to_free);
+  state->to_free = NULL;
+
+  state->top = state->bottom = 0;
+}
+
+void ERR_remove_thread_state(const CRYPTO_THREADID *tid) {
+  if (tid != NULL) {
+    assert(0);
+    return;
+  }
+
+  ERR_clear_error();
+}
+
+int ERR_get_next_error_library(void) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_next_library_mutex);
+  ret = global_next_library++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_next_library_mutex);
+
+  return ret;
+}
+
+void ERR_remove_state(unsigned long pid) {
+  ERR_clear_error();
+}
+
+void ERR_clear_system_error(void) {
+  errno = 0;
+}
+
+char *ERR_error_string(uint32_t packed_error, char *ret) {
+  static char buf[ERR_ERROR_STRING_BUF_LEN];
+
+  if (ret == NULL) {
+    // TODO(fork): remove this.
+    ret = buf;
+  }
+
+#if !defined(NDEBUG)
+  // This is aimed to help catch callers who don't provide
+  // |ERR_ERROR_STRING_BUF_LEN| bytes of space.
+  OPENSSL_memset(ret, 0, ERR_ERROR_STRING_BUF_LEN);
+#endif
+
+  return ERR_error_string_n(packed_error, ret, ERR_ERROR_STRING_BUF_LEN);
+}
+
+char *ERR_error_string_n(uint32_t packed_error, char *buf, size_t len) {
+  char lib_buf[64], reason_buf[64];
+  const char *lib_str, *reason_str;
+  unsigned lib, reason;
+
+  if (len == 0) {
+    return NULL;
+  }
+
+  lib = ERR_GET_LIB(packed_error);
+  reason = ERR_GET_REASON(packed_error);
+
+  lib_str = ERR_lib_error_string(packed_error);
+  reason_str = ERR_reason_error_string(packed_error);
+
+  if (lib_str == NULL) {
+    BIO_snprintf(lib_buf, sizeof(lib_buf), "lib(%u)", lib);
+    lib_str = lib_buf;
+  }
+
+ if (reason_str == NULL) {
+    BIO_snprintf(reason_buf, sizeof(reason_buf), "reason(%u)", reason);
+    reason_str = reason_buf;
+  }
+
+  BIO_snprintf(buf, len, "error:%08" PRIx32 ":%s:OPENSSL_internal:%s",
+               packed_error, lib_str, reason_str);
+
+  if (strlen(buf) == len - 1) {
+    // output may be truncated; make sure we always have 5 colon-separated
+    // fields, i.e. 4 colons.
+    static const unsigned num_colons = 4;
+    unsigned i;
+    char *s = buf;
+
+    if (len <= num_colons) {
+      // In this situation it's not possible to ensure that the correct number
+      // of colons are included in the output.
+      return buf;
+    }
+
+    for (i = 0; i < num_colons; i++) {
+      char *colon = strchr(s, ':');
+      char *last_pos = &buf[len - 1] - num_colons + i;
+
+      if (colon == NULL || colon > last_pos) {
+        // set colon |i| at last possible position (buf[len-1] is the
+        // terminating 0). If we're setting this colon, then all whole of the
+        // rest of the string must be colons in order to have the correct
+        // number.
+        OPENSSL_memset(last_pos, ':', num_colons - i);
+        break;
+      }
+
+      s = colon + 1;
+    }
+  }
+
+  return buf;
+}
+
+// err_string_cmp is a compare function for searching error values with
+// |bsearch| in |err_string_lookup|.
+static int err_string_cmp(const void *a, const void *b) {
+  const uint32_t a_key = *((const uint32_t*) a) >> 15;
+  const uint32_t b_key = *((const uint32_t*) b) >> 15;
+
+  if (a_key < b_key) {
+    return -1;
+  } else if (a_key > b_key) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+// err_string_lookup looks up the string associated with |lib| and |key| in
+// |values| and |string_data|. It returns the string or NULL if not found.
+static const char *err_string_lookup(uint32_t lib, uint32_t key,
+                                     const uint32_t *values,
+                                     size_t num_values,
+                                     const char *string_data) {
+  // |values| points to data in err_data.h, which is generated by
+  // err_data_generate.go. It's an array of uint32_t values. Each value has the
+  // following structure:
+  //   | lib  |    key    |    offset     |
+  //   |6 bits|  11 bits  |    15 bits    |
+  //
+  // The |lib| value is a library identifier: one of the |ERR_LIB_*| values.
+  // The |key| is a reason code, depending on the context.
+  // The |offset| is the number of bytes from the start of |string_data| where
+  // the (NUL terminated) string for this value can be found.
+  //
+  // Values are sorted based on treating the |lib| and |key| part as an
+  // unsigned integer.
+  if (lib >= (1 << 6) || key >= (1 << 11)) {
+    return NULL;
+  }
+  uint32_t search_key = lib << 26 | key << 15;
+  const uint32_t *result = bsearch(&search_key, values, num_values,
+                                   sizeof(uint32_t), err_string_cmp);
+  if (result == NULL) {
+    return NULL;
+  }
+
+  return &string_data[(*result) & 0x7fff];
+}
+
+static const char *const kLibraryNames[ERR_NUM_LIBS] = {
+    "invalid library (0)",
+    "unknown library",                            // ERR_LIB_NONE
+    "system library",                             // ERR_LIB_SYS
+    "bignum routines",                            // ERR_LIB_BN
+    "RSA routines",                               // ERR_LIB_RSA
+    "Diffie-Hellman routines",                    // ERR_LIB_DH
+    "public key routines",                        // ERR_LIB_EVP
+    "memory buffer routines",                     // ERR_LIB_BUF
+    "object identifier routines",                 // ERR_LIB_OBJ
+    "PEM routines",                               // ERR_LIB_PEM
+    "DSA routines",                               // ERR_LIB_DSA
+    "X.509 certificate routines",                 // ERR_LIB_X509
+    "ASN.1 encoding routines",                    // ERR_LIB_ASN1
+    "configuration file routines",                // ERR_LIB_CONF
+    "common libcrypto routines",                  // ERR_LIB_CRYPTO
+    "elliptic curve routines",                    // ERR_LIB_EC
+    "SSL routines",                               // ERR_LIB_SSL
+    "BIO routines",                               // ERR_LIB_BIO
+    "PKCS7 routines",                             // ERR_LIB_PKCS7
+    "PKCS8 routines",                             // ERR_LIB_PKCS8
+    "X509 V3 routines",                           // ERR_LIB_X509V3
+    "random number generator",                    // ERR_LIB_RAND
+    "ENGINE routines",                            // ERR_LIB_ENGINE
+    "OCSP routines",                              // ERR_LIB_OCSP
+    "UI routines",                                // ERR_LIB_UI
+    "COMP routines",                              // ERR_LIB_COMP
+    "ECDSA routines",                             // ERR_LIB_ECDSA
+    "ECDH routines",                              // ERR_LIB_ECDH
+    "HMAC routines",                              // ERR_LIB_HMAC
+    "Digest functions",                           // ERR_LIB_DIGEST
+    "Cipher functions",                           // ERR_LIB_CIPHER
+    "HKDF functions",                             // ERR_LIB_HKDF
+    "User defined functions",                     // ERR_LIB_USER
+};
+
+const char *ERR_lib_error_string(uint32_t packed_error) {
+  const uint32_t lib = ERR_GET_LIB(packed_error);
+
+  if (lib >= ERR_NUM_LIBS) {
+    return NULL;
+  }
+  return kLibraryNames[lib];
+}
+
+const char *ERR_func_error_string(uint32_t packed_error) {
+  return "OPENSSL_internal";
+}
+
+const char *ERR_reason_error_string(uint32_t packed_error) {
+  const uint32_t lib = ERR_GET_LIB(packed_error);
+  const uint32_t reason = ERR_GET_REASON(packed_error);
+
+  if (lib == ERR_LIB_SYS) {
+    if (reason < 127) {
+      return strerror(reason);
+    }
+    return NULL;
+  }
+
+  if (reason < ERR_NUM_LIBS) {
+    return kLibraryNames[reason];
+  }
+
+  if (reason < 100) {
+    switch (reason) {
+      case ERR_R_MALLOC_FAILURE:
+        return "malloc failure";
+      case ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED:
+        return "function should not have been called";
+      case ERR_R_PASSED_NULL_PARAMETER:
+        return "passed a null parameter";
+      case ERR_R_INTERNAL_ERROR:
+        return "internal error";
+      case ERR_R_OVERFLOW:
+        return "overflow";
+      default:
+        return NULL;
+    }
+  }
+
+  return err_string_lookup(lib, reason, kOpenSSLReasonValues,
+                           kOpenSSLReasonValuesLen, kOpenSSLReasonStringData);
+}
+
+void ERR_print_errors_cb(ERR_print_errors_callback_t callback, void *ctx) {
+  char buf[ERR_ERROR_STRING_BUF_LEN];
+  char buf2[1024];
+  const char *file, *data;
+  int line, flags;
+  uint32_t packed_error;
+
+  // thread_hash is the least-significant bits of the |ERR_STATE| pointer value
+  // for this thread.
+  const unsigned long thread_hash = (uintptr_t) err_get_state();
+
+  for (;;) {
+    packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
+    if (packed_error == 0) {
+      break;
+    }
+
+    ERR_error_string_n(packed_error, buf, sizeof(buf));
+    BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", thread_hash, buf,
+                 file, line, (flags & ERR_FLAG_STRING) ? data : "");
+    if (callback(buf2, strlen(buf2), ctx) <= 0) {
+      break;
+    }
+  }
+}
+
+static int print_errors_to_file(const char* msg, size_t msg_len, void* ctx) {
+  assert(msg[msg_len] == '\0');
+  FILE* fp = ctx;
+  int res = fputs(msg, fp);
+  return res < 0 ? 0 : 1;
+}
+
+void ERR_print_errors_fp(FILE *file) {
+  ERR_print_errors_cb(print_errors_to_file, file);
+}
+
+// err_set_error_data sets the data on the most recent error.
+static void err_set_error_data(char *data) {
+  ERR_STATE *const state = err_get_state();
+  struct err_error_st *error;
+
+  if (state == NULL || state->top == state->bottom) {
+    OPENSSL_free(data);
+    return;
+  }
+
+  error = &state->errors[state->top];
+
+  OPENSSL_free(error->data);
+  error->data = data;
+}
+
+void ERR_put_error(int library, int unused, int reason, const char *file,
+                   unsigned line) {
+  ERR_STATE *const state = err_get_state();
+  struct err_error_st *error;
+
+  if (state == NULL) {
+    return;
+  }
+
+  if (library == ERR_LIB_SYS && reason == 0) {
+#if defined(OPENSSL_WINDOWS)
+    reason = GetLastError();
+#else
+    reason = errno;
+#endif
+  }
+
+  state->top = (state->top + 1) % ERR_NUM_ERRORS;
+  if (state->top == state->bottom) {
+    state->bottom = (state->bottom + 1) % ERR_NUM_ERRORS;
+  }
+
+  error = &state->errors[state->top];
+  err_clear(error);
+  error->file = file;
+  error->line = line;
+  error->packed = ERR_PACK(library, reason);
+}
+
+// ERR_add_error_data_vdata takes a variable number of const char* pointers,
+// concatenates them and sets the result as the data on the most recent
+// error.
+static void err_add_error_vdata(unsigned num, va_list args) {
+  size_t alloced, new_len, len = 0, substr_len;
+  char *buf;
+  const char *substr;
+  unsigned i;
+
+  alloced = 80;
+  buf = OPENSSL_malloc(alloced + 1);
+  if (buf == NULL) {
+    return;
+  }
+
+  for (i = 0; i < num; i++) {
+    substr = va_arg(args, const char *);
+    if (substr == NULL) {
+      continue;
+    }
+
+    substr_len = strlen(substr);
+    new_len = len + substr_len;
+    if (new_len > alloced) {
+      char *new_buf;
+
+      if (alloced + 20 + 1 < alloced) {
+        // overflow.
+        OPENSSL_free(buf);
+        return;
+      }
+
+      alloced = new_len + 20;
+      new_buf = OPENSSL_realloc(buf, alloced + 1);
+      if (new_buf == NULL) {
+        OPENSSL_free(buf);
+        return;
+      }
+      buf = new_buf;
+    }
+
+    OPENSSL_memcpy(buf + len, substr, substr_len);
+    len = new_len;
+  }
+
+  buf[len] = 0;
+  err_set_error_data(buf);
+}
+
+void ERR_add_error_data(unsigned count, ...) {
+  va_list args;
+  va_start(args, count);
+  err_add_error_vdata(count, args);
+  va_end(args);
+}
+
+void ERR_add_error_dataf(const char *format, ...) {
+  va_list ap;
+  char *buf;
+  static const unsigned buf_len = 256;
+
+  // A fixed-size buffer is used because va_copy (which would be needed in
+  // order to call vsnprintf twice and measure the buffer) wasn't defined until
+  // C99.
+  buf = OPENSSL_malloc(buf_len + 1);
+  if (buf == NULL) {
+    return;
+  }
+
+  va_start(ap, format);
+  BIO_vsnprintf(buf, buf_len, format, ap);
+  buf[buf_len] = 0;
+  va_end(ap);
+
+  err_set_error_data(buf);
+}
+
+int ERR_set_mark(void) {
+  ERR_STATE *const state = err_get_state();
+
+  if (state == NULL || state->bottom == state->top) {
+    return 0;
+  }
+  state->errors[state->top].mark = 1;
+  return 1;
+}
+
+int ERR_pop_to_mark(void) {
+  ERR_STATE *const state = err_get_state();
+
+  if (state == NULL) {
+    return 0;
+  }
+
+  while (state->bottom != state->top) {
+    struct err_error_st *error = &state->errors[state->top];
+
+    if (error->mark) {
+      error->mark = 0;
+      return 1;
+    }
+
+    err_clear(error);
+    if (state->top == 0) {
+      state->top = ERR_NUM_ERRORS - 1;
+    } else {
+      state->top--;
+    }
+  }
+
+  return 0;
+}
+
+void ERR_load_crypto_strings(void) {}
+
+void ERR_free_strings(void) {}
+
+void ERR_load_BIO_strings(void) {}
+
+void ERR_load_ERR_strings(void) {}
+
+void ERR_load_RAND_strings(void) {}
+
+struct err_save_state_st {
+  struct err_error_st *errors;
+  size_t num_errors;
+};
+
+void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state) {
+  if (state == NULL) {
+    return;
+  }
+  for (size_t i = 0; i < state->num_errors; i++) {
+    err_clear(&state->errors[i]);
+  }
+  OPENSSL_free(state->errors);
+  OPENSSL_free(state);
+}
+
+ERR_SAVE_STATE *ERR_save_state(void) {
+  ERR_STATE *const state = err_get_state();
+  if (state == NULL || state->top == state->bottom) {
+    return NULL;
+  }
+
+  ERR_SAVE_STATE *ret = OPENSSL_malloc(sizeof(ERR_SAVE_STATE));
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  // Errors are stored in the range (bottom, top].
+  size_t num_errors = state->top >= state->bottom
+                          ? state->top - state->bottom
+                          : ERR_NUM_ERRORS + state->top - state->bottom;
+  assert(num_errors < ERR_NUM_ERRORS);
+  ret->errors = OPENSSL_malloc(num_errors * sizeof(struct err_error_st));
+  if (ret->errors == NULL) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+  OPENSSL_memset(ret->errors, 0, num_errors * sizeof(struct err_error_st));
+  ret->num_errors = num_errors;
+
+  for (size_t i = 0; i < num_errors; i++) {
+    size_t j = (state->bottom + i + 1) % ERR_NUM_ERRORS;
+    err_copy(&ret->errors[i], &state->errors[j]);
+  }
+  return ret;
+}
+
+void ERR_restore_state(const ERR_SAVE_STATE *state) {
+  if (state == NULL || state->num_errors == 0) {
+    ERR_clear_error();
+    return;
+  }
+
+  ERR_STATE *const dst = err_get_state();
+  if (dst == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < state->num_errors; i++) {
+    err_copy(&dst->errors[i], &state->errors[i]);
+  }
+  dst->top = state->num_errors - 1;
+  dst->bottom = ERR_NUM_ERRORS - 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h
new file mode 100644
index 0000000..a4c1520
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h	
@@ -0,0 +1,58 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
+
+#include <openssl_grpc/err.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Private error queue functions.
+
+// ERR_SAVE_STATE contains a saved representation of the error queue. It is
+// slightly more compact than |ERR_STATE| as the error queue will typically not
+// contain |ERR_NUM_ERRORS| entries.
+typedef struct err_save_state_st ERR_SAVE_STATE;
+
+// ERR_SAVE_STATE_free releases all memory associated with |state|.
+OPENSSL_EXPORT void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state);
+
+// ERR_save_state returns a newly-allocated |ERR_SAVE_STATE| structure
+// containing the current state of the error queue or NULL on allocation
+// error. It should be released with |ERR_SAVE_STATE_free|.
+OPENSSL_EXPORT ERR_SAVE_STATE *ERR_save_state(void);
+
+// ERR_restore_state clears the error queue and replaces it with |state|.
+OPENSSL_EXPORT void ERR_restore_state(const ERR_SAVE_STATE *state);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ERR_SAVE_STATE, ERR_SAVE_STATE_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h.grpc_back
new file mode 100644
index 0000000..179f756
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/err/internal.h.grpc_back	
@@ -0,0 +1,58 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
+
+#include <openssl/err.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Private error queue functions.
+
+// ERR_SAVE_STATE contains a saved representation of the error queue. It is
+// slightly more compact than |ERR_STATE| as the error queue will typically not
+// contain |ERR_NUM_ERRORS| entries.
+typedef struct err_save_state_st ERR_SAVE_STATE;
+
+// ERR_SAVE_STATE_free releases all memory associated with |state|.
+OPENSSL_EXPORT void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state);
+
+// ERR_save_state returns a newly-allocated |ERR_SAVE_STATE| structure
+// containing the current state of the error queue or NULL on allocation
+// error. It should be released with |ERR_SAVE_STATE_free|.
+OPENSSL_EXPORT ERR_SAVE_STATE *ERR_save_state(void);
+
+// ERR_restore_state clears the error queue and replaces it with |state|.
+OPENSSL_EXPORT void ERR_restore_state(const ERR_SAVE_STATE *state);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ERR_SAVE_STATE, ERR_SAVE_STATE_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c
new file mode 100644
index 0000000..614da35
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c	
@@ -0,0 +1,231 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006,2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+#include "../fipsmodule/digest/internal.h"
+
+
+enum evp_sign_verify_t {
+  evp_sign,
+  evp_verify,
+};
+
+static const struct evp_md_pctx_ops md_pctx_ops = {
+  EVP_PKEY_CTX_free,
+  EVP_PKEY_CTX_dup,
+};
+
+static int uses_prehash(EVP_MD_CTX *ctx, enum evp_sign_verify_t op) {
+  return (op == evp_sign) ? (ctx->pctx->pmeth->sign != NULL)
+                          : (ctx->pctx->pmeth->verify != NULL);
+}
+
+static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                          const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
+                          enum evp_sign_verify_t op) {
+  if (ctx->pctx == NULL) {
+    ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
+  }
+  if (ctx->pctx == NULL) {
+    return 0;
+  }
+  ctx->pctx_ops = &md_pctx_ops;
+
+  if (op == evp_verify) {
+    if (!EVP_PKEY_verify_init(ctx->pctx)) {
+      return 0;
+    }
+  } else {
+    if (!EVP_PKEY_sign_init(ctx->pctx)) {
+      return 0;
+    }
+  }
+
+  if (type != NULL &&
+      !EVP_PKEY_CTX_set_signature_md(ctx->pctx, type)) {
+    return 0;
+  }
+
+  if (uses_prehash(ctx, op)) {
+    if (type == NULL) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_NO_DEFAULT_DIGEST);
+      return 0;
+    }
+    if (!EVP_DigestInit_ex(ctx, type, e)) {
+      return 0;
+    }
+  }
+
+  if (pctx) {
+    *pctx = ctx->pctx;
+  }
+  return 1;
+}
+
+int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, const EVP_MD *type,
+                       ENGINE *e, EVP_PKEY *pkey) {
+  return do_sigver_init(ctx, pctx, type, e, pkey, evp_sign);
+}
+
+int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                         const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) {
+  return do_sigver_init(ctx, pctx, type, e, pkey, evp_verify);
+}
+
+int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  if (!uses_prehash(ctx, evp_sign)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  if (!uses_prehash(ctx, evp_verify)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                        size_t *out_sig_len) {
+  if (!uses_prehash(ctx, evp_sign)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  if (out_sig) {
+    EVP_MD_CTX tmp_ctx;
+    int ret;
+    uint8_t md[EVP_MAX_MD_SIZE];
+    unsigned int mdlen;
+
+    EVP_MD_CTX_init(&tmp_ctx);
+    ret = EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) &&
+          EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen) &&
+          EVP_PKEY_sign(ctx->pctx, out_sig, out_sig_len, md, mdlen);
+    EVP_MD_CTX_cleanup(&tmp_ctx);
+
+    return ret;
+  } else {
+    size_t s = EVP_MD_size(ctx->digest);
+    return EVP_PKEY_sign(ctx->pctx, out_sig, out_sig_len, NULL, s);
+  }
+}
+
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                          size_t sig_len) {
+  if (!uses_prehash(ctx, evp_verify)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  EVP_MD_CTX tmp_ctx;
+  int ret;
+  uint8_t md[EVP_MAX_MD_SIZE];
+  unsigned int mdlen;
+
+  EVP_MD_CTX_init(&tmp_ctx);
+  ret = EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) &&
+        EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen) &&
+        EVP_PKEY_verify(ctx->pctx, sig, sig_len, md, mdlen);
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  return ret;
+}
+
+int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig, size_t *out_sig_len,
+                   const uint8_t *data, size_t data_len) {
+  if (uses_prehash(ctx, evp_sign)) {
+    // If |out_sig| is NULL, the caller is only querying the maximum output
+    // length. |data| should only be incorporated in the final call.
+    if (out_sig != NULL &&
+        !EVP_DigestSignUpdate(ctx, data, data_len)) {
+      return 0;
+    }
+
+    return EVP_DigestSignFinal(ctx, out_sig, out_sig_len);
+  }
+
+  if (ctx->pctx->pmeth->sign_message == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return ctx->pctx->pmeth->sign_message(ctx->pctx, out_sig, out_sig_len, data,
+                                        data_len);
+}
+
+int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                     const uint8_t *data, size_t len) {
+  if (uses_prehash(ctx, evp_verify)) {
+    return EVP_DigestVerifyUpdate(ctx, data, len) &&
+           EVP_DigestVerifyFinal(ctx, sig, sig_len);
+  }
+
+  if (ctx->pctx->pmeth->verify_message == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return ctx->pctx->pmeth->verify_message(ctx->pctx, sig, sig_len, data, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c.grpc_back
new file mode 100644
index 0000000..6e4d305
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/digestsign.c.grpc_back	
@@ -0,0 +1,231 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006,2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+#include "../fipsmodule/digest/internal.h"
+
+
+enum evp_sign_verify_t {
+  evp_sign,
+  evp_verify,
+};
+
+static const struct evp_md_pctx_ops md_pctx_ops = {
+  EVP_PKEY_CTX_free,
+  EVP_PKEY_CTX_dup,
+};
+
+static int uses_prehash(EVP_MD_CTX *ctx, enum evp_sign_verify_t op) {
+  return (op == evp_sign) ? (ctx->pctx->pmeth->sign != NULL)
+                          : (ctx->pctx->pmeth->verify != NULL);
+}
+
+static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                          const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
+                          enum evp_sign_verify_t op) {
+  if (ctx->pctx == NULL) {
+    ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
+  }
+  if (ctx->pctx == NULL) {
+    return 0;
+  }
+  ctx->pctx_ops = &md_pctx_ops;
+
+  if (op == evp_verify) {
+    if (!EVP_PKEY_verify_init(ctx->pctx)) {
+      return 0;
+    }
+  } else {
+    if (!EVP_PKEY_sign_init(ctx->pctx)) {
+      return 0;
+    }
+  }
+
+  if (type != NULL &&
+      !EVP_PKEY_CTX_set_signature_md(ctx->pctx, type)) {
+    return 0;
+  }
+
+  if (uses_prehash(ctx, op)) {
+    if (type == NULL) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_NO_DEFAULT_DIGEST);
+      return 0;
+    }
+    if (!EVP_DigestInit_ex(ctx, type, e)) {
+      return 0;
+    }
+  }
+
+  if (pctx) {
+    *pctx = ctx->pctx;
+  }
+  return 1;
+}
+
+int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, const EVP_MD *type,
+                       ENGINE *e, EVP_PKEY *pkey) {
+  return do_sigver_init(ctx, pctx, type, e, pkey, evp_sign);
+}
+
+int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                         const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey) {
+  return do_sigver_init(ctx, pctx, type, e, pkey, evp_verify);
+}
+
+int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  if (!uses_prehash(ctx, evp_sign)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  if (!uses_prehash(ctx, evp_verify)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                        size_t *out_sig_len) {
+  if (!uses_prehash(ctx, evp_sign)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  if (out_sig) {
+    EVP_MD_CTX tmp_ctx;
+    int ret;
+    uint8_t md[EVP_MAX_MD_SIZE];
+    unsigned int mdlen;
+
+    EVP_MD_CTX_init(&tmp_ctx);
+    ret = EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) &&
+          EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen) &&
+          EVP_PKEY_sign(ctx->pctx, out_sig, out_sig_len, md, mdlen);
+    EVP_MD_CTX_cleanup(&tmp_ctx);
+
+    return ret;
+  } else {
+    size_t s = EVP_MD_size(ctx->digest);
+    return EVP_PKEY_sign(ctx->pctx, out_sig, out_sig_len, NULL, s);
+  }
+}
+
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                          size_t sig_len) {
+  if (!uses_prehash(ctx, evp_verify)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  EVP_MD_CTX tmp_ctx;
+  int ret;
+  uint8_t md[EVP_MAX_MD_SIZE];
+  unsigned int mdlen;
+
+  EVP_MD_CTX_init(&tmp_ctx);
+  ret = EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) &&
+        EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen) &&
+        EVP_PKEY_verify(ctx->pctx, sig, sig_len, md, mdlen);
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  return ret;
+}
+
+int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig, size_t *out_sig_len,
+                   const uint8_t *data, size_t data_len) {
+  if (uses_prehash(ctx, evp_sign)) {
+    // If |out_sig| is NULL, the caller is only querying the maximum output
+    // length. |data| should only be incorporated in the final call.
+    if (out_sig != NULL &&
+        !EVP_DigestSignUpdate(ctx, data, data_len)) {
+      return 0;
+    }
+
+    return EVP_DigestSignFinal(ctx, out_sig, out_sig_len);
+  }
+
+  if (ctx->pctx->pmeth->sign_message == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return ctx->pctx->pmeth->sign_message(ctx->pctx, out_sig, out_sig_len, data,
+                                        data_len);
+}
+
+int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                     const uint8_t *data, size_t len) {
+  if (uses_prehash(ctx, evp_verify)) {
+    return EVP_DigestVerifyUpdate(ctx, data, len) &&
+           EVP_DigestVerifyFinal(ctx, sig, sig_len);
+  }
+
+  if (ctx->pctx->pmeth->verify_message == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return ctx->pctx->pmeth->verify_message(ctx->pctx, sig, sig_len, data, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c
new file mode 100644
index 0000000..b52f859
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c	
@@ -0,0 +1,443 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/evp.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/thread.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// Node depends on |EVP_R_NOT_XOF_OR_INVALID_LENGTH|.
+//
+// TODO(davidben): Fix Node to not touch the error queue itself and remove this.
+OPENSSL_DECLARE_ERROR_REASON(EVP, NOT_XOF_OR_INVALID_LENGTH)
+
+EVP_PKEY *EVP_PKEY_new(void) {
+  EVP_PKEY *ret;
+
+  ret = OPENSSL_malloc(sizeof(EVP_PKEY));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY));
+  ret->type = EVP_PKEY_NONE;
+  ret->references = 1;
+
+  return ret;
+}
+
+static void free_it(EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->pkey_free) {
+    pkey->ameth->pkey_free(pkey);
+    pkey->pkey.ptr = NULL;
+    pkey->type = EVP_PKEY_NONE;
+  }
+}
+
+void EVP_PKEY_free(EVP_PKEY *pkey) {
+  if (pkey == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) {
+    return;
+  }
+
+  free_it(pkey);
+  OPENSSL_free(pkey);
+}
+
+int EVP_PKEY_up_ref(EVP_PKEY *pkey) {
+  CRYPTO_refcount_inc(&pkey->references);
+  return 1;
+}
+
+int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->pkey_opaque) {
+    return pkey->ameth->pkey_opaque(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  if (a->type != b->type) {
+    return -1;
+  }
+
+  if (a->ameth) {
+    int ret;
+    // Compare parameters if the algorithm has them
+    if (a->ameth->param_cmp) {
+      ret = a->ameth->param_cmp(a, b);
+      if (ret <= 0) {
+        return ret;
+      }
+    }
+
+    if (a->ameth->pub_cmp) {
+      return a->ameth->pub_cmp(a, b);
+    }
+  }
+
+  return -2;
+}
+
+int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  if (to->type != from->type) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+    goto err;
+  }
+
+  if (EVP_PKEY_missing_parameters(from)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
+    goto err;
+  }
+
+  if (from->ameth && from->ameth->param_copy) {
+    return from->ameth->param_copy(to, from);
+  }
+
+err:
+  return 0;
+}
+
+int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->param_missing) {
+    return pkey->ameth->param_missing(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_size(const EVP_PKEY *pkey) {
+  if (pkey && pkey->ameth && pkey->ameth->pkey_size) {
+    return pkey->ameth->pkey_size(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_bits(const EVP_PKEY *pkey) {
+  if (pkey && pkey->ameth && pkey->ameth->pkey_bits) {
+    return pkey->ameth->pkey_bits(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_id(const EVP_PKEY *pkey) {
+  return pkey->type;
+}
+
+// evp_pkey_asn1_find returns the ASN.1 method table for the given |nid|, which
+// should be one of the |EVP_PKEY_*| values. It returns NULL if |nid| is
+// unknown.
+static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) {
+  switch (nid) {
+    case EVP_PKEY_RSA:
+      return &rsa_asn1_meth;
+    case EVP_PKEY_EC:
+      return &ec_asn1_meth;
+    case EVP_PKEY_DSA:
+      return &dsa_asn1_meth;
+    case EVP_PKEY_ED25519:
+      return &ed25519_asn1_meth;
+    case EVP_PKEY_X25519:
+      return &x25519_asn1_meth;
+    default:
+      return NULL;
+  }
+}
+
+int EVP_PKEY_type(int nid) {
+  const EVP_PKEY_ASN1_METHOD *meth = evp_pkey_asn1_find(nid);
+  if (meth == NULL) {
+    return NID_undef;
+  }
+  return meth->pkey_id;
+}
+
+int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) {
+  if (EVP_PKEY_assign_RSA(pkey, key)) {
+    RSA_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key);
+}
+
+RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_RSA) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_RSA_KEY);
+    return NULL;
+  }
+  return pkey->pkey.rsa;
+}
+
+RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey) {
+  RSA *rsa = EVP_PKEY_get0_RSA(pkey);
+  if (rsa != NULL) {
+    RSA_up_ref(rsa);
+  }
+  return rsa;
+}
+
+int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) {
+  if (EVP_PKEY_assign_DSA(pkey, key)) {
+    DSA_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key);
+}
+
+DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_DSA) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_A_DSA_KEY);
+    return NULL;
+  }
+  return pkey->pkey.dsa;
+}
+
+DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey) {
+  DSA *dsa = EVP_PKEY_get0_DSA(pkey);
+  if (dsa != NULL) {
+    DSA_up_ref(dsa);
+  }
+  return dsa;
+}
+
+int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
+  if (EVP_PKEY_assign_EC_KEY(pkey, key)) {
+    EC_KEY_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
+}
+
+EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_EC) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_EC_KEY_KEY);
+    return NULL;
+  }
+  return pkey->pkey.ec;
+}
+
+EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey) {
+  EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
+  if (ec_key != NULL) {
+    EC_KEY_up_ref(ec_key);
+  }
+  return ec_key;
+}
+
+DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey) { return NULL; }
+DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey) { return NULL; }
+
+int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) {
+  if (!EVP_PKEY_set_type(pkey, type)) {
+    return 0;
+  }
+  pkey->pkey.ptr = key;
+  return key != NULL;
+}
+
+int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) {
+  const EVP_PKEY_ASN1_METHOD *ameth;
+
+  if (pkey && pkey->pkey.ptr) {
+    free_it(pkey);
+  }
+
+  ameth = evp_pkey_asn1_find(type);
+  if (ameth == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    ERR_add_error_dataf("algorithm %d", type);
+    return 0;
+  }
+
+  if (pkey) {
+    pkey->ameth = ameth;
+    pkey->type = pkey->ameth->pkey_id;
+  }
+
+  return 1;
+}
+
+EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
+                                       const uint8_t *in, size_t len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  if (ret->ameth->set_priv_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    goto err;
+  }
+
+  if (!ret->ameth->set_priv_raw(ret, in, len)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
+                                      const uint8_t *in, size_t len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  if (ret->ameth->set_pub_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    goto err;
+  }
+
+  if (!ret->ameth->set_pub_raw(ret, in, len)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, uint8_t *out,
+                                 size_t *out_len) {
+  if (pkey->ameth->get_priv_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return pkey->ameth->get_priv_raw(pkey, out, out_len);
+}
+
+int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  if (pkey->ameth->get_pub_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return pkey->ameth->get_pub_raw(pkey, out, out_len);
+}
+
+int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  if (a->type != b->type) {
+    return -1;
+  }
+  if (a->ameth && a->ameth->param_cmp) {
+    return a->ameth->param_cmp(a, b);
+  }
+  return -2;
+}
+
+int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0,
+                           (void *)md);
+}
+
+int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD,
+                           0, (void *)out_md);
+}
+
+void OpenSSL_add_all_algorithms(void) {}
+
+void OPENSSL_add_all_algorithms_conf(void) {}
+
+void OpenSSL_add_all_ciphers(void) {}
+
+void OpenSSL_add_all_digests(void) {}
+
+void EVP_cleanup(void) {}
+
+int EVP_PKEY_base_id(const EVP_PKEY *pkey) {
+  // OpenSSL has two notions of key type because it supports multiple OIDs for
+  // the same algorithm: NID_rsa vs NID_rsaEncryption and five distinct spelling
+  // of DSA. We do not support these, so the base ID is simply the ID.
+  return EVP_PKEY_id(pkey);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c.grpc_back
new file mode 100644
index 0000000..60fdf64
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp.c.grpc_back	
@@ -0,0 +1,443 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/evp.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/dsa.h>
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rsa.h>
+#include <openssl/thread.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// Node depends on |EVP_R_NOT_XOF_OR_INVALID_LENGTH|.
+//
+// TODO(davidben): Fix Node to not touch the error queue itself and remove this.
+OPENSSL_DECLARE_ERROR_REASON(EVP, NOT_XOF_OR_INVALID_LENGTH)
+
+EVP_PKEY *EVP_PKEY_new(void) {
+  EVP_PKEY *ret;
+
+  ret = OPENSSL_malloc(sizeof(EVP_PKEY));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY));
+  ret->type = EVP_PKEY_NONE;
+  ret->references = 1;
+
+  return ret;
+}
+
+static void free_it(EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->pkey_free) {
+    pkey->ameth->pkey_free(pkey);
+    pkey->pkey.ptr = NULL;
+    pkey->type = EVP_PKEY_NONE;
+  }
+}
+
+void EVP_PKEY_free(EVP_PKEY *pkey) {
+  if (pkey == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) {
+    return;
+  }
+
+  free_it(pkey);
+  OPENSSL_free(pkey);
+}
+
+int EVP_PKEY_up_ref(EVP_PKEY *pkey) {
+  CRYPTO_refcount_inc(&pkey->references);
+  return 1;
+}
+
+int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->pkey_opaque) {
+    return pkey->ameth->pkey_opaque(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  if (a->type != b->type) {
+    return -1;
+  }
+
+  if (a->ameth) {
+    int ret;
+    // Compare parameters if the algorithm has them
+    if (a->ameth->param_cmp) {
+      ret = a->ameth->param_cmp(a, b);
+      if (ret <= 0) {
+        return ret;
+      }
+    }
+
+    if (a->ameth->pub_cmp) {
+      return a->ameth->pub_cmp(a, b);
+    }
+  }
+
+  return -2;
+}
+
+int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  if (to->type != from->type) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+    goto err;
+  }
+
+  if (EVP_PKEY_missing_parameters(from)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
+    goto err;
+  }
+
+  if (from->ameth && from->ameth->param_copy) {
+    return from->ameth->param_copy(to, from);
+  }
+
+err:
+  return 0;
+}
+
+int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) {
+  if (pkey->ameth && pkey->ameth->param_missing) {
+    return pkey->ameth->param_missing(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_size(const EVP_PKEY *pkey) {
+  if (pkey && pkey->ameth && pkey->ameth->pkey_size) {
+    return pkey->ameth->pkey_size(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_bits(const EVP_PKEY *pkey) {
+  if (pkey && pkey->ameth && pkey->ameth->pkey_bits) {
+    return pkey->ameth->pkey_bits(pkey);
+  }
+  return 0;
+}
+
+int EVP_PKEY_id(const EVP_PKEY *pkey) {
+  return pkey->type;
+}
+
+// evp_pkey_asn1_find returns the ASN.1 method table for the given |nid|, which
+// should be one of the |EVP_PKEY_*| values. It returns NULL if |nid| is
+// unknown.
+static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) {
+  switch (nid) {
+    case EVP_PKEY_RSA:
+      return &rsa_asn1_meth;
+    case EVP_PKEY_EC:
+      return &ec_asn1_meth;
+    case EVP_PKEY_DSA:
+      return &dsa_asn1_meth;
+    case EVP_PKEY_ED25519:
+      return &ed25519_asn1_meth;
+    case EVP_PKEY_X25519:
+      return &x25519_asn1_meth;
+    default:
+      return NULL;
+  }
+}
+
+int EVP_PKEY_type(int nid) {
+  const EVP_PKEY_ASN1_METHOD *meth = evp_pkey_asn1_find(nid);
+  if (meth == NULL) {
+    return NID_undef;
+  }
+  return meth->pkey_id;
+}
+
+int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) {
+  if (EVP_PKEY_assign_RSA(pkey, key)) {
+    RSA_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key);
+}
+
+RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_RSA) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_RSA_KEY);
+    return NULL;
+  }
+  return pkey->pkey.rsa;
+}
+
+RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey) {
+  RSA *rsa = EVP_PKEY_get0_RSA(pkey);
+  if (rsa != NULL) {
+    RSA_up_ref(rsa);
+  }
+  return rsa;
+}
+
+int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) {
+  if (EVP_PKEY_assign_DSA(pkey, key)) {
+    DSA_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key);
+}
+
+DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_DSA) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_A_DSA_KEY);
+    return NULL;
+  }
+  return pkey->pkey.dsa;
+}
+
+DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey) {
+  DSA *dsa = EVP_PKEY_get0_DSA(pkey);
+  if (dsa != NULL) {
+    DSA_up_ref(dsa);
+  }
+  return dsa;
+}
+
+int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
+  if (EVP_PKEY_assign_EC_KEY(pkey, key)) {
+    EC_KEY_up_ref(key);
+    return 1;
+  }
+  return 0;
+}
+
+int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
+  return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
+}
+
+EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey) {
+  if (pkey->type != EVP_PKEY_EC) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_EC_KEY_KEY);
+    return NULL;
+  }
+  return pkey->pkey.ec;
+}
+
+EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey) {
+  EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
+  if (ec_key != NULL) {
+    EC_KEY_up_ref(ec_key);
+  }
+  return ec_key;
+}
+
+DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey) { return NULL; }
+DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey) { return NULL; }
+
+int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) {
+  if (!EVP_PKEY_set_type(pkey, type)) {
+    return 0;
+  }
+  pkey->pkey.ptr = key;
+  return key != NULL;
+}
+
+int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) {
+  const EVP_PKEY_ASN1_METHOD *ameth;
+
+  if (pkey && pkey->pkey.ptr) {
+    free_it(pkey);
+  }
+
+  ameth = evp_pkey_asn1_find(type);
+  if (ameth == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    ERR_add_error_dataf("algorithm %d", type);
+    return 0;
+  }
+
+  if (pkey) {
+    pkey->ameth = ameth;
+    pkey->type = pkey->ameth->pkey_id;
+  }
+
+  return 1;
+}
+
+EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
+                                       const uint8_t *in, size_t len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  if (ret->ameth->set_priv_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    goto err;
+  }
+
+  if (!ret->ameth->set_priv_raw(ret, in, len)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
+                                      const uint8_t *in, size_t len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  if (ret->ameth->set_pub_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    goto err;
+  }
+
+  if (!ret->ameth->set_pub_raw(ret, in, len)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, uint8_t *out,
+                                 size_t *out_len) {
+  if (pkey->ameth->get_priv_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return pkey->ameth->get_priv_raw(pkey, out, out_len);
+}
+
+int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  if (pkey->ameth->get_pub_raw == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  return pkey->ameth->get_pub_raw(pkey, out, out_len);
+}
+
+int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  if (a->type != b->type) {
+    return -1;
+  }
+  if (a->ameth && a->ameth->param_cmp) {
+    return a->ameth->param_cmp(a, b);
+  }
+  return -2;
+}
+
+int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0,
+                           (void *)md);
+}
+
+int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD,
+                           0, (void *)out_md);
+}
+
+void OpenSSL_add_all_algorithms(void) {}
+
+void OPENSSL_add_all_algorithms_conf(void) {}
+
+void OpenSSL_add_all_ciphers(void) {}
+
+void OpenSSL_add_all_digests(void) {}
+
+void EVP_cleanup(void) {}
+
+int EVP_PKEY_base_id(const EVP_PKEY *pkey) {
+  // OpenSSL has two notions of key type because it supports multiple OIDs for
+  // the same algorithm: NID_rsa vs NID_rsaEncryption and five distinct spelling
+  // of DSA. We do not support these, so the base ID is simply the ID.
+  return EVP_PKEY_id(pkey);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c
new file mode 100644
index 0000000..47b3e70
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c	
@@ -0,0 +1,388 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/evp.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/rsa.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static const EVP_PKEY_ASN1_METHOD *const kASN1Methods[] = {
+    &rsa_asn1_meth,
+    &ec_asn1_meth,
+    &dsa_asn1_meth,
+    &ed25519_asn1_meth,
+    &x25519_asn1_meth,
+};
+
+static int parse_key_type(CBS *cbs, int *out_type) {
+  CBS oid;
+  if (!CBS_get_asn1(cbs, &oid, CBS_ASN1_OBJECT)) {
+    return 0;
+  }
+
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kASN1Methods); i++) {
+    const EVP_PKEY_ASN1_METHOD *method = kASN1Methods[i];
+    if (CBS_len(&oid) == method->oid_len &&
+        OPENSSL_memcmp(CBS_data(&oid), method->oid, method->oid_len) == 0) {
+      *out_type = method->pkey_id;
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+EVP_PKEY *EVP_parse_public_key(CBS *cbs) {
+  // Parse the SubjectPublicKeyInfo.
+  CBS spki, algorithm, key;
+  int type;
+  uint8_t padding;
+  if (!CBS_get_asn1(cbs, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&spki, &key, CBS_ASN1_BITSTRING) ||
+      CBS_len(&spki) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+  if (!parse_key_type(&algorithm, &type)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return NULL;
+  }
+  if (// Every key type defined encodes the key as a byte string with the same
+      // conversion to BIT STRING.
+      !CBS_get_u8(&key, &padding) ||
+      padding != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Set up an |EVP_PKEY| of the appropriate type.
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  // Call into the type-specific SPKI decoding function.
+  if (ret->ameth->pub_decode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    goto err;
+  }
+  if (!ret->ameth->pub_decode(ret, &algorithm, &key)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key) {
+  if (key->ameth == NULL || key->ameth->pub_encode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return 0;
+  }
+
+  return key->ameth->pub_encode(cbb, key);
+}
+
+EVP_PKEY *EVP_parse_private_key(CBS *cbs) {
+  // Parse the PrivateKeyInfo.
+  CBS pkcs8, algorithm, key;
+  uint64_t version;
+  int type;
+  if (!CBS_get_asn1(cbs, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&pkcs8, &version) ||
+      version != 0 ||
+      !CBS_get_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pkcs8, &key, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+  if (!parse_key_type(&algorithm, &type)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return NULL;
+  }
+
+  // A PrivateKeyInfo ends with a SET of Attributes which we ignore.
+
+  // Set up an |EVP_PKEY| of the appropriate type.
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  // Call into the type-specific PrivateKeyInfo decoding function.
+  if (ret->ameth->priv_decode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    goto err;
+  }
+  if (!ret->ameth->priv_decode(ret, &algorithm, &key)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key) {
+  if (key->ameth == NULL || key->ameth->priv_encode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return 0;
+  }
+
+  return key->ameth->priv_encode(cbb, key);
+}
+
+static EVP_PKEY *old_priv_decode(CBS *cbs, int type) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  switch (type) {
+    case EVP_PKEY_EC: {
+      EC_KEY *ec_key = EC_KEY_parse_private_key(cbs, NULL);
+      if (ec_key == NULL || !EVP_PKEY_assign_EC_KEY(ret, ec_key)) {
+        EC_KEY_free(ec_key);
+        goto err;
+      }
+      return ret;
+    }
+    case EVP_PKEY_DSA: {
+      DSA *dsa = DSA_parse_private_key(cbs);
+      if (dsa == NULL || !EVP_PKEY_assign_DSA(ret, dsa)) {
+        DSA_free(dsa);
+        goto err;
+      }
+      return ret;
+    }
+    case EVP_PKEY_RSA: {
+      RSA *rsa = RSA_parse_private_key(cbs);
+      if (rsa == NULL || !EVP_PKEY_assign_RSA(ret, rsa)) {
+        RSA_free(rsa);
+        goto err;
+      }
+      return ret;
+    }
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_PUBLIC_KEY_TYPE);
+      goto err;
+  }
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out, const uint8_t **inp,
+                         long len) {
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse with the legacy format.
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EVP_PKEY *ret = old_priv_decode(&cbs, type);
+  if (ret == NULL) {
+    // Try again with PKCS#8.
+    ERR_clear_error();
+    CBS_init(&cbs, *inp, (size_t)len);
+    ret = EVP_parse_private_key(&cbs);
+    if (ret == NULL) {
+      return NULL;
+    }
+    if (ret->type != type) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+      EVP_PKEY_free(ret);
+      return NULL;
+    }
+  }
+
+  if (out != NULL) {
+    EVP_PKEY_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+// num_elements parses one SEQUENCE from |in| and returns the number of elements
+// in it. On parse error, it returns zero.
+static size_t num_elements(const uint8_t *in, size_t in_len) {
+  CBS cbs, sequence;
+  CBS_init(&cbs, in, (size_t)in_len);
+
+  if (!CBS_get_asn1(&cbs, &sequence, CBS_ASN1_SEQUENCE)) {
+    return 0;
+  }
+
+  size_t count = 0;
+  while (CBS_len(&sequence) > 0) {
+    if (!CBS_get_any_asn1_element(&sequence, NULL, NULL, NULL)) {
+      return 0;
+    }
+
+    count++;
+  }
+
+  return count;
+}
+
+EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse the input as a PKCS#8 PrivateKeyInfo.
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EVP_PKEY *ret = EVP_parse_private_key(&cbs);
+  if (ret != NULL) {
+    if (out != NULL) {
+      EVP_PKEY_free(*out);
+      *out = ret;
+    }
+    *inp = CBS_data(&cbs);
+    return ret;
+  }
+  ERR_clear_error();
+
+  // Count the elements to determine the legacy key format.
+  switch (num_elements(*inp, (size_t)len)) {
+    case 4:
+      return d2i_PrivateKey(EVP_PKEY_EC, out, inp, len);
+
+    case 6:
+      return d2i_PrivateKey(EVP_PKEY_DSA, out, inp, len);
+
+    default:
+      return d2i_PrivateKey(EVP_PKEY_RSA, out, inp, len);
+  }
+}
+
+int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp) {
+  switch (key->type) {
+    case EVP_PKEY_RSA:
+      return i2d_RSAPublicKey(key->pkey.rsa, outp);
+    case EVP_PKEY_DSA:
+      return i2d_DSAPublicKey(key->pkey.dsa, outp);
+    case EVP_PKEY_EC:
+      return i2o_ECPublicKey(key->pkey.ec, outp);
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+      return -1;
+  }
+}
+
+EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out, const uint8_t **inp,
+                        long len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *inp, len < 0 ? 0 : (size_t)len);
+  switch (type) {
+    case EVP_PKEY_RSA: {
+      RSA *rsa = RSA_parse_public_key(&cbs);
+      if (rsa == NULL || !EVP_PKEY_assign_RSA(ret, rsa)) {
+        RSA_free(rsa);
+        goto err;
+      }
+      break;
+    }
+
+    // Unlike OpenSSL, we do not support EC keys with this API. The raw EC
+    // public key serialization requires knowing the group. In OpenSSL, calling
+    // this function with |EVP_PKEY_EC| and setting |out| to NULL does not work.
+    // It requires |*out| to include a partially-initiazed |EVP_PKEY| to extract
+    // the group.
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+      goto err;
+  }
+
+  *inp = CBS_data(&cbs);
+  if (out != NULL) {
+    EVP_PKEY_free(*out);
+    *out = ret;
+  }
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c.grpc_back
new file mode 100644
index 0000000..fc1dce3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_asn1.c.grpc_back	
@@ -0,0 +1,388 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/evp.h>
+
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/dsa.h>
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/rsa.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static const EVP_PKEY_ASN1_METHOD *const kASN1Methods[] = {
+    &rsa_asn1_meth,
+    &ec_asn1_meth,
+    &dsa_asn1_meth,
+    &ed25519_asn1_meth,
+    &x25519_asn1_meth,
+};
+
+static int parse_key_type(CBS *cbs, int *out_type) {
+  CBS oid;
+  if (!CBS_get_asn1(cbs, &oid, CBS_ASN1_OBJECT)) {
+    return 0;
+  }
+
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kASN1Methods); i++) {
+    const EVP_PKEY_ASN1_METHOD *method = kASN1Methods[i];
+    if (CBS_len(&oid) == method->oid_len &&
+        OPENSSL_memcmp(CBS_data(&oid), method->oid, method->oid_len) == 0) {
+      *out_type = method->pkey_id;
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+EVP_PKEY *EVP_parse_public_key(CBS *cbs) {
+  // Parse the SubjectPublicKeyInfo.
+  CBS spki, algorithm, key;
+  int type;
+  uint8_t padding;
+  if (!CBS_get_asn1(cbs, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&spki, &key, CBS_ASN1_BITSTRING) ||
+      CBS_len(&spki) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+  if (!parse_key_type(&algorithm, &type)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return NULL;
+  }
+  if (// Every key type defined encodes the key as a byte string with the same
+      // conversion to BIT STRING.
+      !CBS_get_u8(&key, &padding) ||
+      padding != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Set up an |EVP_PKEY| of the appropriate type.
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  // Call into the type-specific SPKI decoding function.
+  if (ret->ameth->pub_decode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    goto err;
+  }
+  if (!ret->ameth->pub_decode(ret, &algorithm, &key)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key) {
+  if (key->ameth == NULL || key->ameth->pub_encode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return 0;
+  }
+
+  return key->ameth->pub_encode(cbb, key);
+}
+
+EVP_PKEY *EVP_parse_private_key(CBS *cbs) {
+  // Parse the PrivateKeyInfo.
+  CBS pkcs8, algorithm, key;
+  uint64_t version;
+  int type;
+  if (!CBS_get_asn1(cbs, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&pkcs8, &version) ||
+      version != 0 ||
+      !CBS_get_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pkcs8, &key, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+  if (!parse_key_type(&algorithm, &type)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return NULL;
+  }
+
+  // A PrivateKeyInfo ends with a SET of Attributes which we ignore.
+
+  // Set up an |EVP_PKEY| of the appropriate type.
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL ||
+      !EVP_PKEY_set_type(ret, type)) {
+    goto err;
+  }
+
+  // Call into the type-specific PrivateKeyInfo decoding function.
+  if (ret->ameth->priv_decode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    goto err;
+  }
+  if (!ret->ameth->priv_decode(ret, &algorithm, &key)) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key) {
+  if (key->ameth == NULL || key->ameth->priv_encode == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    return 0;
+  }
+
+  return key->ameth->priv_encode(cbb, key);
+}
+
+static EVP_PKEY *old_priv_decode(CBS *cbs, int type) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  switch (type) {
+    case EVP_PKEY_EC: {
+      EC_KEY *ec_key = EC_KEY_parse_private_key(cbs, NULL);
+      if (ec_key == NULL || !EVP_PKEY_assign_EC_KEY(ret, ec_key)) {
+        EC_KEY_free(ec_key);
+        goto err;
+      }
+      return ret;
+    }
+    case EVP_PKEY_DSA: {
+      DSA *dsa = DSA_parse_private_key(cbs);
+      if (dsa == NULL || !EVP_PKEY_assign_DSA(ret, dsa)) {
+        DSA_free(dsa);
+        goto err;
+      }
+      return ret;
+    }
+    case EVP_PKEY_RSA: {
+      RSA *rsa = RSA_parse_private_key(cbs);
+      if (rsa == NULL || !EVP_PKEY_assign_RSA(ret, rsa)) {
+        RSA_free(rsa);
+        goto err;
+      }
+      return ret;
+    }
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_PUBLIC_KEY_TYPE);
+      goto err;
+  }
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
+
+EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out, const uint8_t **inp,
+                         long len) {
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse with the legacy format.
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EVP_PKEY *ret = old_priv_decode(&cbs, type);
+  if (ret == NULL) {
+    // Try again with PKCS#8.
+    ERR_clear_error();
+    CBS_init(&cbs, *inp, (size_t)len);
+    ret = EVP_parse_private_key(&cbs);
+    if (ret == NULL) {
+      return NULL;
+    }
+    if (ret->type != type) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+      EVP_PKEY_free(ret);
+      return NULL;
+    }
+  }
+
+  if (out != NULL) {
+    EVP_PKEY_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+// num_elements parses one SEQUENCE from |in| and returns the number of elements
+// in it. On parse error, it returns zero.
+static size_t num_elements(const uint8_t *in, size_t in_len) {
+  CBS cbs, sequence;
+  CBS_init(&cbs, in, (size_t)in_len);
+
+  if (!CBS_get_asn1(&cbs, &sequence, CBS_ASN1_SEQUENCE)) {
+    return 0;
+  }
+
+  size_t count = 0;
+  while (CBS_len(&sequence) > 0) {
+    if (!CBS_get_any_asn1_element(&sequence, NULL, NULL, NULL)) {
+      return 0;
+    }
+
+    count++;
+  }
+
+  return count;
+}
+
+EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return NULL;
+  }
+
+  // Parse the input as a PKCS#8 PrivateKeyInfo.
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  EVP_PKEY *ret = EVP_parse_private_key(&cbs);
+  if (ret != NULL) {
+    if (out != NULL) {
+      EVP_PKEY_free(*out);
+      *out = ret;
+    }
+    *inp = CBS_data(&cbs);
+    return ret;
+  }
+  ERR_clear_error();
+
+  // Count the elements to determine the legacy key format.
+  switch (num_elements(*inp, (size_t)len)) {
+    case 4:
+      return d2i_PrivateKey(EVP_PKEY_EC, out, inp, len);
+
+    case 6:
+      return d2i_PrivateKey(EVP_PKEY_DSA, out, inp, len);
+
+    default:
+      return d2i_PrivateKey(EVP_PKEY_RSA, out, inp, len);
+  }
+}
+
+int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp) {
+  switch (key->type) {
+    case EVP_PKEY_RSA:
+      return i2d_RSAPublicKey(key->pkey.rsa, outp);
+    case EVP_PKEY_DSA:
+      return i2d_DSAPublicKey(key->pkey.dsa, outp);
+    case EVP_PKEY_EC:
+      return i2o_ECPublicKey(key->pkey.ec, outp);
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+      return -1;
+  }
+}
+
+EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out, const uint8_t **inp,
+                        long len) {
+  EVP_PKEY *ret = EVP_PKEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *inp, len < 0 ? 0 : (size_t)len);
+  switch (type) {
+    case EVP_PKEY_RSA: {
+      RSA *rsa = RSA_parse_public_key(&cbs);
+      if (rsa == NULL || !EVP_PKEY_assign_RSA(ret, rsa)) {
+        RSA_free(rsa);
+        goto err;
+      }
+      break;
+    }
+
+    // Unlike OpenSSL, we do not support EC keys with this API. The raw EC
+    // public key serialization requires knowing the group. In OpenSSL, calling
+    // this function with |EVP_PKEY_EC| and setting |out| to NULL does not work.
+    // It requires |*out| to include a partially-initiazed |EVP_PKEY| to extract
+    // the group.
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+      goto err;
+  }
+
+  *inp = CBS_data(&cbs);
+  if (out != NULL) {
+    EVP_PKEY_free(*out);
+    *out = ret;
+  }
+  return ret;
+
+err:
+  EVP_PKEY_free(ret);
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c
new file mode 100644
index 0000000..dcdaf4b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c	
@@ -0,0 +1,484 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/evp.h>
+
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+static const EVP_PKEY_METHOD *const evp_methods[] = {
+    &rsa_pkey_meth,
+    &ec_pkey_meth,
+    &ed25519_pkey_meth,
+    &x25519_pkey_meth,
+};
+
+static const EVP_PKEY_METHOD *evp_pkey_meth_find(int type) {
+  for (size_t i = 0; i < sizeof(evp_methods)/sizeof(EVP_PKEY_METHOD*); i++) {
+    if (evp_methods[i]->pkey_id == type) {
+      return evp_methods[i];
+    }
+  }
+
+  return NULL;
+}
+
+static EVP_PKEY_CTX *evp_pkey_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id) {
+  EVP_PKEY_CTX *ret;
+  const EVP_PKEY_METHOD *pmeth;
+
+  if (id == -1) {
+    if (!pkey || !pkey->ameth) {
+      return NULL;
+    }
+    id = pkey->ameth->pkey_id;
+  }
+
+  pmeth = evp_pkey_meth_find(id);
+
+  if (pmeth == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    ERR_add_error_dataf("algorithm %d", id);
+    return NULL;
+  }
+
+  ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+  ret->engine = e;
+  ret->pmeth = pmeth;
+  ret->operation = EVP_PKEY_OP_UNDEFINED;
+
+  if (pkey) {
+    EVP_PKEY_up_ref(pkey);
+    ret->pkey = pkey;
+  }
+
+  if (pmeth->init) {
+    if (pmeth->init(ret) <= 0) {
+      EVP_PKEY_free(ret->pkey);
+      OPENSSL_free(ret);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) {
+  return evp_pkey_ctx_new(pkey, e, -1);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) {
+  return evp_pkey_ctx_new(NULL, e, id);
+}
+
+void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+  if (ctx->pmeth && ctx->pmeth->cleanup) {
+    ctx->pmeth->cleanup(ctx);
+  }
+  EVP_PKEY_free(ctx->pkey);
+  EVP_PKEY_free(ctx->peerkey);
+  OPENSSL_free(ctx);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx) {
+  if (!ctx->pmeth || !ctx->pmeth->copy) {
+    return NULL;
+  }
+
+  EVP_PKEY_CTX *ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+  if (!ret) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+  ret->pmeth = ctx->pmeth;
+  ret->engine = ctx->engine;
+  ret->operation = ctx->operation;
+
+  if (ctx->pkey != NULL) {
+    EVP_PKEY_up_ref(ctx->pkey);
+    ret->pkey = ctx->pkey;
+  }
+
+  if (ctx->peerkey != NULL) {
+    EVP_PKEY_up_ref(ctx->peerkey);
+    ret->peerkey = ctx->peerkey;
+  }
+
+  if (ctx->pmeth->copy(ret, ctx) <= 0) {
+    ret->pmeth = NULL;
+    EVP_PKEY_CTX_free(ret);
+    OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+    return NULL;
+  }
+
+  return ret;
+}
+
+EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) { return ctx->pkey; }
+
+int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
+                      int p1, void *p2) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+    return 0;
+  }
+  if (keytype != -1 && ctx->pmeth->pkey_id != keytype) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_OPERATION_SET);
+    return 0;
+  }
+
+  if (optype != -1 && !(ctx->operation & optype)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  return ctx->pmeth->ctrl(ctx, cmd, p1, p2);
+}
+
+int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL || ctx->pmeth == NULL ||
+      (ctx->pmeth->sign == NULL && ctx->pmeth->sign_message == NULL)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  ctx->operation = EVP_PKEY_OP_SIGN;
+  return 1;
+}
+
+int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *sig_len,
+                  const uint8_t *digest, size_t digest_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_SIGN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->sign(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL || ctx->pmeth == NULL ||
+      (ctx->pmeth->verify == NULL && ctx->pmeth->verify_message == NULL)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_VERIFY;
+  return 1;
+}
+
+int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                    const uint8_t *digest, size_t digest_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_VERIFY) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->verify(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_ENCRYPT;
+  return 1;
+}
+
+int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                     const uint8_t *in, size_t inlen) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_DECRYPT;
+  return 1;
+}
+
+int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                     const uint8_t *in, size_t inlen) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
+  return 1;
+}
+
+int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
+                            const uint8_t *sig, size_t sig_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->verify_recover(ctx, out, out_len, sig, sig_len);
+}
+
+int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_DERIVE;
+  return 1;
+}
+
+int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer) {
+  int ret;
+  if (!ctx || !ctx->pmeth ||
+      !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt) ||
+      !ctx->pmeth->ctrl) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DERIVE &&
+      ctx->operation != EVP_PKEY_OP_ENCRYPT &&
+      ctx->operation != EVP_PKEY_OP_DECRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
+
+  if (ret <= 0) {
+    return 0;
+  }
+
+  if (ret == 2) {
+    return 1;
+  }
+
+  if (!ctx->pkey) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
+    return 0;
+  }
+
+  if (ctx->pkey->type != peer->type) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+    return 0;
+  }
+
+  // ran@cryptocom.ru: For clarity.  The error is if parameters in peer are
+  // present (!missing) but don't match.  EVP_PKEY_cmp_parameters may return
+  // 1 (match), 0 (don't match) and -2 (comparison is not defined).  -1
+  // (different key types) is impossible here because it is checked earlier.
+  // -2 is OK for us here, as well as 1, so we can check for 0 only.
+  if (!EVP_PKEY_missing_parameters(peer) &&
+      !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
+    return 0;
+  }
+
+  EVP_PKEY_free(ctx->peerkey);
+  ctx->peerkey = peer;
+
+  ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
+
+  if (ret <= 0) {
+    ctx->peerkey = NULL;
+    return 0;
+  }
+
+  EVP_PKEY_up_ref(peer);
+  return 1;
+}
+
+int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *out_key_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DERIVE) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->derive(ctx, key, out_key_len);
+}
+
+int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_KEYGEN;
+  return 1;
+}
+
+int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!out_pkey) {
+    return 0;
+  }
+
+  if (!*out_pkey) {
+    *out_pkey = EVP_PKEY_new();
+    if (!*out_pkey) {
+      OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+      return 0;
+    }
+  }
+
+  if (!ctx->pmeth->keygen(ctx, *out_pkey)) {
+    EVP_PKEY_free(*out_pkey);
+    *out_pkey = NULL;
+    return 0;
+  }
+  return 1;
+}
+
+int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_PARAMGEN;
+  return 1;
+}
+
+int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_PARAMGEN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!out_pkey) {
+    return 0;
+  }
+
+  if (!*out_pkey) {
+    *out_pkey = EVP_PKEY_new();
+    if (!*out_pkey) {
+      OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+      return 0;
+    }
+  }
+
+  if (!ctx->pmeth->paramgen(ctx, *out_pkey)) {
+    EVP_PKEY_free(*out_pkey);
+    *out_pkey = NULL;
+    return 0;
+  }
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c.grpc_back
new file mode 100644
index 0000000..9ca2c55
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/evp_ctx.c.grpc_back	
@@ -0,0 +1,484 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/evp.h>
+
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+static const EVP_PKEY_METHOD *const evp_methods[] = {
+    &rsa_pkey_meth,
+    &ec_pkey_meth,
+    &ed25519_pkey_meth,
+    &x25519_pkey_meth,
+};
+
+static const EVP_PKEY_METHOD *evp_pkey_meth_find(int type) {
+  for (size_t i = 0; i < sizeof(evp_methods)/sizeof(EVP_PKEY_METHOD*); i++) {
+    if (evp_methods[i]->pkey_id == type) {
+      return evp_methods[i];
+    }
+  }
+
+  return NULL;
+}
+
+static EVP_PKEY_CTX *evp_pkey_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id) {
+  EVP_PKEY_CTX *ret;
+  const EVP_PKEY_METHOD *pmeth;
+
+  if (id == -1) {
+    if (!pkey || !pkey->ameth) {
+      return NULL;
+    }
+    id = pkey->ameth->pkey_id;
+  }
+
+  pmeth = evp_pkey_meth_find(id);
+
+  if (pmeth == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+    ERR_add_error_dataf("algorithm %d", id);
+    return NULL;
+  }
+
+  ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+  ret->engine = e;
+  ret->pmeth = pmeth;
+  ret->operation = EVP_PKEY_OP_UNDEFINED;
+
+  if (pkey) {
+    EVP_PKEY_up_ref(pkey);
+    ret->pkey = pkey;
+  }
+
+  if (pmeth->init) {
+    if (pmeth->init(ret) <= 0) {
+      EVP_PKEY_free(ret->pkey);
+      OPENSSL_free(ret);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) {
+  return evp_pkey_ctx_new(pkey, e, -1);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) {
+  return evp_pkey_ctx_new(NULL, e, id);
+}
+
+void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+  if (ctx->pmeth && ctx->pmeth->cleanup) {
+    ctx->pmeth->cleanup(ctx);
+  }
+  EVP_PKEY_free(ctx->pkey);
+  EVP_PKEY_free(ctx->peerkey);
+  OPENSSL_free(ctx);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx) {
+  if (!ctx->pmeth || !ctx->pmeth->copy) {
+    return NULL;
+  }
+
+  EVP_PKEY_CTX *ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+  if (!ret) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+  ret->pmeth = ctx->pmeth;
+  ret->engine = ctx->engine;
+  ret->operation = ctx->operation;
+
+  if (ctx->pkey != NULL) {
+    EVP_PKEY_up_ref(ctx->pkey);
+    ret->pkey = ctx->pkey;
+  }
+
+  if (ctx->peerkey != NULL) {
+    EVP_PKEY_up_ref(ctx->peerkey);
+    ret->peerkey = ctx->peerkey;
+  }
+
+  if (ctx->pmeth->copy(ret, ctx) <= 0) {
+    ret->pmeth = NULL;
+    EVP_PKEY_CTX_free(ret);
+    OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+    return NULL;
+  }
+
+  return ret;
+}
+
+EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) { return ctx->pkey; }
+
+int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
+                      int p1, void *p2) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+    return 0;
+  }
+  if (keytype != -1 && ctx->pmeth->pkey_id != keytype) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_OPERATION_SET);
+    return 0;
+  }
+
+  if (optype != -1 && !(ctx->operation & optype)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_OPERATION);
+    return 0;
+  }
+
+  return ctx->pmeth->ctrl(ctx, cmd, p1, p2);
+}
+
+int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL || ctx->pmeth == NULL ||
+      (ctx->pmeth->sign == NULL && ctx->pmeth->sign_message == NULL)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+
+  ctx->operation = EVP_PKEY_OP_SIGN;
+  return 1;
+}
+
+int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *sig_len,
+                  const uint8_t *digest, size_t digest_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_SIGN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->sign(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) {
+  if (ctx == NULL || ctx->pmeth == NULL ||
+      (ctx->pmeth->verify == NULL && ctx->pmeth->verify_message == NULL)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_VERIFY;
+  return 1;
+}
+
+int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                    const uint8_t *digest, size_t digest_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_VERIFY) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->verify(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_ENCRYPT;
+  return 1;
+}
+
+int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                     const uint8_t *in, size_t inlen) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_DECRYPT;
+  return 1;
+}
+
+int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                     const uint8_t *in, size_t inlen) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
+  return 1;
+}
+
+int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
+                            const uint8_t *sig, size_t sig_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->verify_recover(ctx, out, out_len, sig, sig_len);
+}
+
+int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_DERIVE;
+  return 1;
+}
+
+int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer) {
+  int ret;
+  if (!ctx || !ctx->pmeth ||
+      !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt) ||
+      !ctx->pmeth->ctrl) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DERIVE &&
+      ctx->operation != EVP_PKEY_OP_ENCRYPT &&
+      ctx->operation != EVP_PKEY_OP_DECRYPT) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
+
+  if (ret <= 0) {
+    return 0;
+  }
+
+  if (ret == 2) {
+    return 1;
+  }
+
+  if (!ctx->pkey) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
+    return 0;
+  }
+
+  if (ctx->pkey->type != peer->type) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+    return 0;
+  }
+
+  // ran@cryptocom.ru: For clarity.  The error is if parameters in peer are
+  // present (!missing) but don't match.  EVP_PKEY_cmp_parameters may return
+  // 1 (match), 0 (don't match) and -2 (comparison is not defined).  -1
+  // (different key types) is impossible here because it is checked earlier.
+  // -2 is OK for us here, as well as 1, so we can check for 0 only.
+  if (!EVP_PKEY_missing_parameters(peer) &&
+      !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
+    return 0;
+  }
+
+  EVP_PKEY_free(ctx->peerkey);
+  ctx->peerkey = peer;
+
+  ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
+
+  if (ret <= 0) {
+    ctx->peerkey = NULL;
+    return 0;
+  }
+
+  EVP_PKEY_up_ref(peer);
+  return 1;
+}
+
+int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *out_key_len) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_DERIVE) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+  return ctx->pmeth->derive(ctx, key, out_key_len);
+}
+
+int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_KEYGEN;
+  return 1;
+}
+
+int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!out_pkey) {
+    return 0;
+  }
+
+  if (!*out_pkey) {
+    *out_pkey = EVP_PKEY_new();
+    if (!*out_pkey) {
+      OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+      return 0;
+    }
+  }
+
+  if (!ctx->pmeth->keygen(ctx, *out_pkey)) {
+    EVP_PKEY_free(*out_pkey);
+    *out_pkey = NULL;
+    return 0;
+  }
+  return 1;
+}
+
+int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  ctx->operation = EVP_PKEY_OP_PARAMGEN;
+  return 1;
+}
+
+int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey) {
+  if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return 0;
+  }
+  if (ctx->operation != EVP_PKEY_OP_PARAMGEN) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!out_pkey) {
+    return 0;
+  }
+
+  if (!*out_pkey) {
+    *out_pkey = EVP_PKEY_new();
+    if (!*out_pkey) {
+      OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+      return 0;
+    }
+  }
+
+  if (!ctx->pmeth->paramgen(ctx, *out_pkey)) {
+    EVP_PKEY_free(*out_pkey);
+    *out_pkey = NULL;
+    return 0;
+  }
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h
new file mode 100644
index 0000000..1b1fb48
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h	
@@ -0,0 +1,269 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_EVP_INTERNAL_H
+#define OPENSSL_HEADER_EVP_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/rsa.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+struct evp_pkey_asn1_method_st {
+  int pkey_id;
+  uint8_t oid[9];
+  uint8_t oid_len;
+
+  // pub_decode decodes |params| and |key| as a SubjectPublicKeyInfo
+  // and writes the result into |out|. It returns one on success and zero on
+  // error. |params| is the AlgorithmIdentifier after the OBJECT IDENTIFIER
+  // type field, and |key| is the contents of the subjectPublicKey with the
+  // leading padding byte checked and removed. Although X.509 uses BIT STRINGs
+  // to represent SubjectPublicKeyInfo, every key type defined encodes the key
+  // as a byte string with the same conversion to BIT STRING.
+  int (*pub_decode)(EVP_PKEY *out, CBS *params, CBS *key);
+
+  // pub_encode encodes |key| as a SubjectPublicKeyInfo and appends the result
+  // to |out|. It returns one on success and zero on error.
+  int (*pub_encode)(CBB *out, const EVP_PKEY *key);
+
+  int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
+
+  // priv_decode decodes |params| and |key| as a PrivateKeyInfo and writes the
+  // result into |out|. It returns one on success and zero on error. |params| is
+  // the AlgorithmIdentifier after the OBJECT IDENTIFIER type field, and |key|
+  // is the contents of the OCTET STRING privateKey field.
+  int (*priv_decode)(EVP_PKEY *out, CBS *params, CBS *key);
+
+  // priv_encode encodes |key| as a PrivateKeyInfo and appends the result to
+  // |out|. It returns one on success and zero on error.
+  int (*priv_encode)(CBB *out, const EVP_PKEY *key);
+
+  int (*set_priv_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
+  int (*set_pub_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
+  int (*get_priv_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
+  int (*get_pub_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
+
+  // pkey_opaque returns 1 if the |pk| is opaque. Opaque keys are backed by
+  // custom implementations which do not expose key material and parameters.
+  int (*pkey_opaque)(const EVP_PKEY *pk);
+
+  int (*pkey_size)(const EVP_PKEY *pk);
+  int (*pkey_bits)(const EVP_PKEY *pk);
+
+  int (*param_missing)(const EVP_PKEY *pk);
+  int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from);
+  int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
+
+  void (*pkey_free)(EVP_PKEY *pkey);
+} /* EVP_PKEY_ASN1_METHOD */;
+
+
+#define EVP_PKEY_OP_UNDEFINED 0
+#define EVP_PKEY_OP_KEYGEN (1 << 2)
+#define EVP_PKEY_OP_SIGN (1 << 3)
+#define EVP_PKEY_OP_VERIFY (1 << 4)
+#define EVP_PKEY_OP_VERIFYRECOVER (1 << 5)
+#define EVP_PKEY_OP_ENCRYPT (1 << 6)
+#define EVP_PKEY_OP_DECRYPT (1 << 7)
+#define EVP_PKEY_OP_DERIVE (1 << 8)
+#define EVP_PKEY_OP_PARAMGEN (1 << 9)
+
+#define EVP_PKEY_OP_TYPE_SIG \
+  (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER)
+
+#define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
+
+#define EVP_PKEY_OP_TYPE_NOGEN \
+  (EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
+
+#define EVP_PKEY_OP_TYPE_GEN (EVP_PKEY_OP_KEYGEN | EVP_PKEY_OP_PARAMGEN)
+
+// EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|
+// arguments can be -1 to specify that any type and operation are acceptable,
+// otherwise |keytype| must match the type of |ctx| and the bits of |optype|
+// must intersect the operation flags set on |ctx|.
+//
+// The |p1| and |p2| arguments depend on the value of |cmd|.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
+                                     int cmd, int p1, void *p2);
+
+#define EVP_PKEY_CTRL_MD 1
+#define EVP_PKEY_CTRL_GET_MD 2
+
+// EVP_PKEY_CTRL_PEER_KEY is called with different values of |p1|:
+//   0: Is called from |EVP_PKEY_derive_set_peer| and |p2| contains a peer key.
+//      If the return value is <= 0, the key is rejected.
+//   1: Is called at the end of |EVP_PKEY_derive_set_peer| and |p2| contains a
+//      peer key. If the return value is <= 0, the key is rejected.
+//   2: Is called with |p2| == NULL to test whether the peer's key was used.
+//      (EC)DH always return one in this case.
+//   3: Is called with |p2| == NULL to set whether the peer's key was used.
+//      (EC)DH always return one in this case. This was only used for GOST.
+#define EVP_PKEY_CTRL_PEER_KEY 3
+
+// EVP_PKEY_ALG_CTRL is the base value from which key-type specific ctrl
+// commands are numbered.
+#define EVP_PKEY_ALG_CTRL 0x1000
+
+#define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
+#define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 2)
+#define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 3)
+#define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 4)
+#define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 5)
+#define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 6)
+#define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 7)
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 8)
+#define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 9)
+#define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 10)
+#define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 11)
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
+#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 13)
+
+struct evp_pkey_ctx_st {
+  // Method associated with this operation
+  const EVP_PKEY_METHOD *pmeth;
+  // Engine that implements this method or NULL if builtin
+  ENGINE *engine;
+  // Key: may be NULL
+  EVP_PKEY *pkey;
+  // Peer key for key agreement, may be NULL
+  EVP_PKEY *peerkey;
+  // operation contains one of the |EVP_PKEY_OP_*| values.
+  int operation;
+  // Algorithm specific data
+  void *data;
+} /* EVP_PKEY_CTX */;
+
+struct evp_pkey_method_st {
+  int pkey_id;
+
+  int (*init)(EVP_PKEY_CTX *ctx);
+  int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
+  void (*cleanup)(EVP_PKEY_CTX *ctx);
+
+  int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+
+  int (*sign)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+              const uint8_t *tbs, size_t tbslen);
+
+  int (*sign_message)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                      const uint8_t *tbs, size_t tbslen);
+
+  int (*verify)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                const uint8_t *tbs, size_t tbslen);
+
+  int (*verify_message)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                        const uint8_t *tbs, size_t tbslen);
+
+  int (*verify_recover)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
+                        const uint8_t *sig, size_t sig_len);
+
+  int (*encrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                 const uint8_t *in, size_t inlen);
+
+  int (*decrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                 const uint8_t *in, size_t inlen);
+
+  int (*derive)(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *keylen);
+
+  int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+
+  int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
+} /* EVP_PKEY_METHOD */;
+
+typedef struct {
+  union {
+    uint8_t priv[64];
+    struct {
+      // Shift the location of the public key to align with where it is in the
+      // private key representation.
+      uint8_t pad[32];
+      uint8_t value[32];
+    } pub;
+  } key;
+  char has_private;
+} ED25519_KEY;
+
+typedef struct {
+  uint8_t pub[32];
+  uint8_t priv[32];
+  char has_private;
+} X25519_KEY;
+
+extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD x25519_asn1_meth;
+
+extern const EVP_PKEY_METHOD rsa_pkey_meth;
+extern const EVP_PKEY_METHOD ec_pkey_meth;
+extern const EVP_PKEY_METHOD ed25519_pkey_meth;
+extern const EVP_PKEY_METHOD x25519_pkey_meth;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EVP_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h.grpc_back
new file mode 100644
index 0000000..8b6a583
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/internal.h.grpc_back	
@@ -0,0 +1,269 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_EVP_INTERNAL_H
+#define OPENSSL_HEADER_EVP_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/rsa.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+struct evp_pkey_asn1_method_st {
+  int pkey_id;
+  uint8_t oid[9];
+  uint8_t oid_len;
+
+  // pub_decode decodes |params| and |key| as a SubjectPublicKeyInfo
+  // and writes the result into |out|. It returns one on success and zero on
+  // error. |params| is the AlgorithmIdentifier after the OBJECT IDENTIFIER
+  // type field, and |key| is the contents of the subjectPublicKey with the
+  // leading padding byte checked and removed. Although X.509 uses BIT STRINGs
+  // to represent SubjectPublicKeyInfo, every key type defined encodes the key
+  // as a byte string with the same conversion to BIT STRING.
+  int (*pub_decode)(EVP_PKEY *out, CBS *params, CBS *key);
+
+  // pub_encode encodes |key| as a SubjectPublicKeyInfo and appends the result
+  // to |out|. It returns one on success and zero on error.
+  int (*pub_encode)(CBB *out, const EVP_PKEY *key);
+
+  int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
+
+  // priv_decode decodes |params| and |key| as a PrivateKeyInfo and writes the
+  // result into |out|. It returns one on success and zero on error. |params| is
+  // the AlgorithmIdentifier after the OBJECT IDENTIFIER type field, and |key|
+  // is the contents of the OCTET STRING privateKey field.
+  int (*priv_decode)(EVP_PKEY *out, CBS *params, CBS *key);
+
+  // priv_encode encodes |key| as a PrivateKeyInfo and appends the result to
+  // |out|. It returns one on success and zero on error.
+  int (*priv_encode)(CBB *out, const EVP_PKEY *key);
+
+  int (*set_priv_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
+  int (*set_pub_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
+  int (*get_priv_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
+  int (*get_pub_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
+
+  // pkey_opaque returns 1 if the |pk| is opaque. Opaque keys are backed by
+  // custom implementations which do not expose key material and parameters.
+  int (*pkey_opaque)(const EVP_PKEY *pk);
+
+  int (*pkey_size)(const EVP_PKEY *pk);
+  int (*pkey_bits)(const EVP_PKEY *pk);
+
+  int (*param_missing)(const EVP_PKEY *pk);
+  int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from);
+  int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
+
+  void (*pkey_free)(EVP_PKEY *pkey);
+} /* EVP_PKEY_ASN1_METHOD */;
+
+
+#define EVP_PKEY_OP_UNDEFINED 0
+#define EVP_PKEY_OP_KEYGEN (1 << 2)
+#define EVP_PKEY_OP_SIGN (1 << 3)
+#define EVP_PKEY_OP_VERIFY (1 << 4)
+#define EVP_PKEY_OP_VERIFYRECOVER (1 << 5)
+#define EVP_PKEY_OP_ENCRYPT (1 << 6)
+#define EVP_PKEY_OP_DECRYPT (1 << 7)
+#define EVP_PKEY_OP_DERIVE (1 << 8)
+#define EVP_PKEY_OP_PARAMGEN (1 << 9)
+
+#define EVP_PKEY_OP_TYPE_SIG \
+  (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER)
+
+#define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
+
+#define EVP_PKEY_OP_TYPE_NOGEN \
+  (EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
+
+#define EVP_PKEY_OP_TYPE_GEN (EVP_PKEY_OP_KEYGEN | EVP_PKEY_OP_PARAMGEN)
+
+// EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|
+// arguments can be -1 to specify that any type and operation are acceptable,
+// otherwise |keytype| must match the type of |ctx| and the bits of |optype|
+// must intersect the operation flags set on |ctx|.
+//
+// The |p1| and |p2| arguments depend on the value of |cmd|.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
+                                     int cmd, int p1, void *p2);
+
+#define EVP_PKEY_CTRL_MD 1
+#define EVP_PKEY_CTRL_GET_MD 2
+
+// EVP_PKEY_CTRL_PEER_KEY is called with different values of |p1|:
+//   0: Is called from |EVP_PKEY_derive_set_peer| and |p2| contains a peer key.
+//      If the return value is <= 0, the key is rejected.
+//   1: Is called at the end of |EVP_PKEY_derive_set_peer| and |p2| contains a
+//      peer key. If the return value is <= 0, the key is rejected.
+//   2: Is called with |p2| == NULL to test whether the peer's key was used.
+//      (EC)DH always return one in this case.
+//   3: Is called with |p2| == NULL to set whether the peer's key was used.
+//      (EC)DH always return one in this case. This was only used for GOST.
+#define EVP_PKEY_CTRL_PEER_KEY 3
+
+// EVP_PKEY_ALG_CTRL is the base value from which key-type specific ctrl
+// commands are numbered.
+#define EVP_PKEY_ALG_CTRL 0x1000
+
+#define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
+#define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 2)
+#define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 3)
+#define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 4)
+#define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 5)
+#define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 6)
+#define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 7)
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 8)
+#define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 9)
+#define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 10)
+#define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 11)
+#define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
+#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 13)
+
+struct evp_pkey_ctx_st {
+  // Method associated with this operation
+  const EVP_PKEY_METHOD *pmeth;
+  // Engine that implements this method or NULL if builtin
+  ENGINE *engine;
+  // Key: may be NULL
+  EVP_PKEY *pkey;
+  // Peer key for key agreement, may be NULL
+  EVP_PKEY *peerkey;
+  // operation contains one of the |EVP_PKEY_OP_*| values.
+  int operation;
+  // Algorithm specific data
+  void *data;
+} /* EVP_PKEY_CTX */;
+
+struct evp_pkey_method_st {
+  int pkey_id;
+
+  int (*init)(EVP_PKEY_CTX *ctx);
+  int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
+  void (*cleanup)(EVP_PKEY_CTX *ctx);
+
+  int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+
+  int (*sign)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+              const uint8_t *tbs, size_t tbslen);
+
+  int (*sign_message)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                      const uint8_t *tbs, size_t tbslen);
+
+  int (*verify)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                const uint8_t *tbs, size_t tbslen);
+
+  int (*verify_message)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                        const uint8_t *tbs, size_t tbslen);
+
+  int (*verify_recover)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
+                        const uint8_t *sig, size_t sig_len);
+
+  int (*encrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                 const uint8_t *in, size_t inlen);
+
+  int (*decrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                 const uint8_t *in, size_t inlen);
+
+  int (*derive)(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *keylen);
+
+  int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
+
+  int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
+} /* EVP_PKEY_METHOD */;
+
+typedef struct {
+  union {
+    uint8_t priv[64];
+    struct {
+      // Shift the location of the public key to align with where it is in the
+      // private key representation.
+      uint8_t pad[32];
+      uint8_t value[32];
+    } pub;
+  } key;
+  char has_private;
+} ED25519_KEY;
+
+typedef struct {
+  uint8_t pub[32];
+  uint8_t priv[32];
+  char has_private;
+} X25519_KEY;
+
+extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD x25519_asn1_meth;
+
+extern const EVP_PKEY_METHOD rsa_pkey_meth;
+extern const EVP_PKEY_METHOD ec_pkey_meth;
+extern const EVP_PKEY_METHOD ed25519_pkey_meth;
+extern const EVP_PKEY_METHOD x25519_pkey_meth;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EVP_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c
new file mode 100644
index 0000000..78587dc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c	
@@ -0,0 +1,273 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+static int dsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 3279, section 2.3.2.
+
+  // Parameters may or may not be present.
+  DSA *dsa;
+  if (CBS_len(params) == 0) {
+    dsa = DSA_new();
+    if (dsa == NULL) {
+      return 0;
+    }
+  } else {
+    dsa = DSA_parse_parameters(params);
+    if (dsa == NULL || CBS_len(params) != 0) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+      goto err;
+    }
+  }
+
+  dsa->pub_key = BN_new();
+  if (dsa->pub_key == NULL) {
+    goto err;
+  }
+
+  if (!BN_parse_asn1_unsigned(key, dsa->pub_key) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  EVP_PKEY_assign_DSA(out, dsa);
+  return 1;
+
+err:
+  DSA_free(dsa);
+  return 0;
+}
+
+static int dsa_pub_encode(CBB *out, const EVP_PKEY *key) {
+  const DSA *dsa = key->pkey.dsa;
+  const int has_params = dsa->p != NULL && dsa->q != NULL && dsa->g != NULL;
+
+  // See RFC 5480, section 2.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, dsa_asn1_meth.oid, dsa_asn1_meth.oid_len) ||
+      (has_params &&
+       !DSA_marshal_parameters(&algorithm, dsa)) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !BN_marshal_asn1(&key_bitstring, dsa->pub_key) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int dsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See PKCS#11, v2.40, section 2.5.
+
+  // Decode parameters.
+  BN_CTX *ctx = NULL;
+  DSA *dsa = DSA_parse_parameters(params);
+  if (dsa == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  dsa->priv_key = BN_new();
+  dsa->pub_key = BN_new();
+  if (dsa->priv_key == NULL || dsa->pub_key == NULL) {
+    goto err;
+  }
+
+  // Decode the key.
+  if (!BN_parse_asn1_unsigned(key, dsa->priv_key) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  // Calculate the public key.
+  ctx = BN_CTX_new();
+  if (ctx == NULL ||
+      !BN_mod_exp_mont_consttime(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p,
+                                 ctx, NULL)) {
+    goto err;
+  }
+
+  BN_CTX_free(ctx);
+  EVP_PKEY_assign_DSA(out, dsa);
+  return 1;
+
+err:
+  BN_CTX_free(ctx);
+  DSA_free(dsa);
+  return 0;
+}
+
+static int dsa_priv_encode(CBB *out, const EVP_PKEY *key) {
+  const DSA *dsa = key->pkey.dsa;
+  if (dsa == NULL || dsa->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  // See PKCS#11, v2.40, section 2.5.
+  CBB pkcs8, algorithm, oid, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, dsa_asn1_meth.oid, dsa_asn1_meth.oid_len) ||
+      !DSA_marshal_parameters(&algorithm, dsa) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !BN_marshal_asn1(&private_key, dsa->priv_key) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int int_dsa_size(const EVP_PKEY *pkey) {
+  return DSA_size(pkey->pkey.dsa);
+}
+
+static int dsa_bits(const EVP_PKEY *pkey) {
+  return BN_num_bits(pkey->pkey.dsa->p);
+}
+
+static int dsa_missing_parameters(const EVP_PKEY *pkey) {
+  DSA *dsa;
+  dsa = pkey->pkey.dsa;
+  if (dsa->p == NULL || dsa->q == NULL || dsa->g == NULL) {
+    return 1;
+  }
+  return 0;
+}
+
+static int dup_bn_into(BIGNUM **out, BIGNUM *src) {
+  BIGNUM *a;
+
+  a = BN_dup(src);
+  if (a == NULL) {
+    return 0;
+  }
+  BN_free(*out);
+  *out = a;
+
+  return 1;
+}
+
+static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  if (!dup_bn_into(&to->pkey.dsa->p, from->pkey.dsa->p) ||
+      !dup_bn_into(&to->pkey.dsa->q, from->pkey.dsa->q) ||
+      !dup_bn_into(&to->pkey.dsa->g, from->pkey.dsa->g)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) == 0 &&
+         BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) == 0 &&
+         BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g) == 0;
+}
+
+static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) == 0;
+}
+
+static void int_dsa_free(EVP_PKEY *pkey) { DSA_free(pkey->pkey.dsa); }
+
+const EVP_PKEY_ASN1_METHOD dsa_asn1_meth = {
+  EVP_PKEY_DSA,
+  // 1.2.840.10040.4.1
+  {0x2a, 0x86, 0x48, 0xce, 0x38, 0x04, 0x01}, 7,
+
+  dsa_pub_decode,
+  dsa_pub_encode,
+  dsa_pub_cmp,
+
+  dsa_priv_decode,
+  dsa_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  NULL /* pkey_opaque */,
+
+  int_dsa_size,
+  dsa_bits,
+
+  dsa_missing_parameters,
+  dsa_copy_parameters,
+  dsa_cmp_parameters,
+
+  int_dsa_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c.grpc_back
new file mode 100644
index 0000000..d50e0fc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_dsa_asn1.c.grpc_back	
@@ -0,0 +1,273 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <openssl/digest.h>
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/dsa.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+static int dsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 3279, section 2.3.2.
+
+  // Parameters may or may not be present.
+  DSA *dsa;
+  if (CBS_len(params) == 0) {
+    dsa = DSA_new();
+    if (dsa == NULL) {
+      return 0;
+    }
+  } else {
+    dsa = DSA_parse_parameters(params);
+    if (dsa == NULL || CBS_len(params) != 0) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+      goto err;
+    }
+  }
+
+  dsa->pub_key = BN_new();
+  if (dsa->pub_key == NULL) {
+    goto err;
+  }
+
+  if (!BN_parse_asn1_unsigned(key, dsa->pub_key) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  EVP_PKEY_assign_DSA(out, dsa);
+  return 1;
+
+err:
+  DSA_free(dsa);
+  return 0;
+}
+
+static int dsa_pub_encode(CBB *out, const EVP_PKEY *key) {
+  const DSA *dsa = key->pkey.dsa;
+  const int has_params = dsa->p != NULL && dsa->q != NULL && dsa->g != NULL;
+
+  // See RFC 5480, section 2.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, dsa_asn1_meth.oid, dsa_asn1_meth.oid_len) ||
+      (has_params &&
+       !DSA_marshal_parameters(&algorithm, dsa)) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !BN_marshal_asn1(&key_bitstring, dsa->pub_key) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int dsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See PKCS#11, v2.40, section 2.5.
+
+  // Decode parameters.
+  BN_CTX *ctx = NULL;
+  DSA *dsa = DSA_parse_parameters(params);
+  if (dsa == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  dsa->priv_key = BN_new();
+  dsa->pub_key = BN_new();
+  if (dsa->priv_key == NULL || dsa->pub_key == NULL) {
+    goto err;
+  }
+
+  // Decode the key.
+  if (!BN_parse_asn1_unsigned(key, dsa->priv_key) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  // Calculate the public key.
+  ctx = BN_CTX_new();
+  if (ctx == NULL ||
+      !BN_mod_exp_mont_consttime(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p,
+                                 ctx, NULL)) {
+    goto err;
+  }
+
+  BN_CTX_free(ctx);
+  EVP_PKEY_assign_DSA(out, dsa);
+  return 1;
+
+err:
+  BN_CTX_free(ctx);
+  DSA_free(dsa);
+  return 0;
+}
+
+static int dsa_priv_encode(CBB *out, const EVP_PKEY *key) {
+  const DSA *dsa = key->pkey.dsa;
+  if (dsa == NULL || dsa->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  // See PKCS#11, v2.40, section 2.5.
+  CBB pkcs8, algorithm, oid, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, dsa_asn1_meth.oid, dsa_asn1_meth.oid_len) ||
+      !DSA_marshal_parameters(&algorithm, dsa) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !BN_marshal_asn1(&private_key, dsa->priv_key) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int int_dsa_size(const EVP_PKEY *pkey) {
+  return DSA_size(pkey->pkey.dsa);
+}
+
+static int dsa_bits(const EVP_PKEY *pkey) {
+  return BN_num_bits(pkey->pkey.dsa->p);
+}
+
+static int dsa_missing_parameters(const EVP_PKEY *pkey) {
+  DSA *dsa;
+  dsa = pkey->pkey.dsa;
+  if (dsa->p == NULL || dsa->q == NULL || dsa->g == NULL) {
+    return 1;
+  }
+  return 0;
+}
+
+static int dup_bn_into(BIGNUM **out, BIGNUM *src) {
+  BIGNUM *a;
+
+  a = BN_dup(src);
+  if (a == NULL) {
+    return 0;
+  }
+  BN_free(*out);
+  *out = a;
+
+  return 1;
+}
+
+static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  if (!dup_bn_into(&to->pkey.dsa->p, from->pkey.dsa->p) ||
+      !dup_bn_into(&to->pkey.dsa->q, from->pkey.dsa->q) ||
+      !dup_bn_into(&to->pkey.dsa->g, from->pkey.dsa->g)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) == 0 &&
+         BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) == 0 &&
+         BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g) == 0;
+}
+
+static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) == 0;
+}
+
+static void int_dsa_free(EVP_PKEY *pkey) { DSA_free(pkey->pkey.dsa); }
+
+const EVP_PKEY_ASN1_METHOD dsa_asn1_meth = {
+  EVP_PKEY_DSA,
+  // 1.2.840.10040.4.1
+  {0x2a, 0x86, 0x48, 0xce, 0x38, 0x04, 0x01}, 7,
+
+  dsa_pub_decode,
+  dsa_pub_encode,
+  dsa_pub_cmp,
+
+  dsa_priv_decode,
+  dsa_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  NULL /* pkey_opaque */,
+
+  int_dsa_size,
+  dsa_bits,
+
+  dsa_missing_parameters,
+  dsa_copy_parameters,
+  dsa_cmp_parameters,
+
+  int_dsa_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c
new file mode 100644
index 0000000..9dc36fa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c	
@@ -0,0 +1,286 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/ecdh.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "internal.h"
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+typedef struct {
+  // message digest
+  const EVP_MD *md;
+  EC_GROUP *gen_group;
+} EC_PKEY_CTX;
+
+
+static int pkey_ec_init(EVP_PKEY_CTX *ctx) {
+  EC_PKEY_CTX *dctx;
+  dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
+  if (!dctx) {
+    return 0;
+  }
+  OPENSSL_memset(dctx, 0, sizeof(EC_PKEY_CTX));
+
+  ctx->data = dctx;
+
+  return 1;
+}
+
+static int pkey_ec_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) {
+  EC_PKEY_CTX *dctx, *sctx;
+  if (!pkey_ec_init(dst)) {
+    return 0;
+  }
+  sctx = src->data;
+  dctx = dst->data;
+
+  dctx->md = sctx->md;
+
+  return 1;
+}
+
+static void pkey_ec_cleanup(EVP_PKEY_CTX *ctx) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  if (!dctx) {
+    return;
+  }
+
+  EC_GROUP_free(dctx->gen_group);
+  OPENSSL_free(dctx);
+}
+
+static int pkey_ec_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                        const uint8_t *tbs, size_t tbslen) {
+  unsigned int sltmp;
+  EC_KEY *ec = ctx->pkey->pkey.ec;
+
+  if (!sig) {
+    *siglen = ECDSA_size(ec);
+    return 1;
+  } else if (*siglen < (size_t)ECDSA_size(ec)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!ECDSA_sign(0, tbs, tbslen, sig, &sltmp, ec)) {
+    return 0;
+  }
+  *siglen = (size_t)sltmp;
+  return 1;
+}
+
+static int pkey_ec_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                          const uint8_t *tbs, size_t tbslen) {
+  return ECDSA_verify(0, tbs, tbslen, sig, siglen, ctx->pkey->pkey.ec);
+}
+
+static int pkey_ec_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
+                          size_t *keylen) {
+  int ret;
+  size_t outlen;
+  const EC_POINT *pubkey = NULL;
+  EC_KEY *eckey;
+
+  if (!ctx->pkey || !ctx->peerkey) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  eckey = ctx->pkey->pkey.ec;
+
+  if (!key) {
+    const EC_GROUP *group;
+    group = EC_KEY_get0_group(eckey);
+    *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
+    return 1;
+  }
+  pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
+
+  // NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
+  // not an error, the result is truncated.
+
+  outlen = *keylen;
+
+  ret = ECDH_compute_key(key, outlen, pubkey, eckey, 0);
+  if (ret < 0) {
+    return 0;
+  }
+  *keylen = ret;
+  return 1;
+}
+
+static int pkey_ec_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  EC_PKEY_CTX *dctx = ctx->data;
+
+  switch (type) {
+    case EVP_PKEY_CTRL_MD:
+      if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha512) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_DIGEST_TYPE);
+        return 0;
+      }
+      dctx->md = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_MD:
+      *(const EVP_MD **)p2 = dctx->md;
+      return 1;
+
+    case EVP_PKEY_CTRL_PEER_KEY:
+      // Default behaviour is OK
+      return 1;
+
+    case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID: {
+      EC_GROUP *group = EC_GROUP_new_by_curve_name(p1);
+      if (group == NULL) {
+        return 0;
+      }
+      EC_GROUP_free(dctx->gen_group);
+      dctx->gen_group = group;
+      return 1;
+    }
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  const EC_GROUP *group = dctx->gen_group;
+  if (group == NULL) {
+    if (ctx->pkey == NULL) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_NO_PARAMETERS_SET);
+      return 0;
+    }
+    group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
+  }
+  EC_KEY *ec = EC_KEY_new();
+  if (ec == NULL ||
+      !EC_KEY_set_group(ec, group) ||
+      !EC_KEY_generate_key(ec)) {
+    EC_KEY_free(ec);
+    return 0;
+  }
+  EVP_PKEY_assign_EC_KEY(pkey, ec);
+  return 1;
+}
+
+static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  if (dctx->gen_group == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_PARAMETERS_SET);
+    return 0;
+  }
+  EC_KEY *ec = EC_KEY_new();
+  if (ec == NULL ||
+      !EC_KEY_set_group(ec, dctx->gen_group)) {
+    EC_KEY_free(ec);
+    return 0;
+  }
+  EVP_PKEY_assign_EC_KEY(pkey, ec);
+  return 1;
+}
+
+const EVP_PKEY_METHOD ec_pkey_meth = {
+    EVP_PKEY_EC,
+    pkey_ec_init,
+    pkey_ec_copy,
+    pkey_ec_cleanup,
+    pkey_ec_keygen,
+    pkey_ec_sign,
+    NULL /* sign_message */,
+    pkey_ec_verify,
+    NULL /* verify_message */,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    pkey_ec_derive,
+    pkey_ec_paramgen,
+    pkey_ec_ctrl,
+};
+
+int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, EVP_PKEY_OP_TYPE_GEN,
+                           EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL);
+}
+
+int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int encoding) {
+  // BoringSSL only supports named curve syntax.
+  if (encoding != OPENSSL_EC_NAMED_CURVE) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PARAMETERS);
+    return 0;
+  }
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c.grpc_back
new file mode 100644
index 0000000..9767541
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec.c.grpc_back	
@@ -0,0 +1,286 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/digest.h>
+#include <openssl/ec.h>
+#include <openssl/ec_key.h>
+#include <openssl/ecdh.h>
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "internal.h"
+#include "../fipsmodule/ec/internal.h"
+#include "../internal.h"
+
+
+typedef struct {
+  // message digest
+  const EVP_MD *md;
+  EC_GROUP *gen_group;
+} EC_PKEY_CTX;
+
+
+static int pkey_ec_init(EVP_PKEY_CTX *ctx) {
+  EC_PKEY_CTX *dctx;
+  dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
+  if (!dctx) {
+    return 0;
+  }
+  OPENSSL_memset(dctx, 0, sizeof(EC_PKEY_CTX));
+
+  ctx->data = dctx;
+
+  return 1;
+}
+
+static int pkey_ec_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) {
+  EC_PKEY_CTX *dctx, *sctx;
+  if (!pkey_ec_init(dst)) {
+    return 0;
+  }
+  sctx = src->data;
+  dctx = dst->data;
+
+  dctx->md = sctx->md;
+
+  return 1;
+}
+
+static void pkey_ec_cleanup(EVP_PKEY_CTX *ctx) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  if (!dctx) {
+    return;
+  }
+
+  EC_GROUP_free(dctx->gen_group);
+  OPENSSL_free(dctx);
+}
+
+static int pkey_ec_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                        const uint8_t *tbs, size_t tbslen) {
+  unsigned int sltmp;
+  EC_KEY *ec = ctx->pkey->pkey.ec;
+
+  if (!sig) {
+    *siglen = ECDSA_size(ec);
+    return 1;
+  } else if (*siglen < (size_t)ECDSA_size(ec)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!ECDSA_sign(0, tbs, tbslen, sig, &sltmp, ec)) {
+    return 0;
+  }
+  *siglen = (size_t)sltmp;
+  return 1;
+}
+
+static int pkey_ec_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
+                          const uint8_t *tbs, size_t tbslen) {
+  return ECDSA_verify(0, tbs, tbslen, sig, siglen, ctx->pkey->pkey.ec);
+}
+
+static int pkey_ec_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
+                          size_t *keylen) {
+  int ret;
+  size_t outlen;
+  const EC_POINT *pubkey = NULL;
+  EC_KEY *eckey;
+
+  if (!ctx->pkey || !ctx->peerkey) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  eckey = ctx->pkey->pkey.ec;
+
+  if (!key) {
+    const EC_GROUP *group;
+    group = EC_KEY_get0_group(eckey);
+    *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
+    return 1;
+  }
+  pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
+
+  // NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
+  // not an error, the result is truncated.
+
+  outlen = *keylen;
+
+  ret = ECDH_compute_key(key, outlen, pubkey, eckey, 0);
+  if (ret < 0) {
+    return 0;
+  }
+  *keylen = ret;
+  return 1;
+}
+
+static int pkey_ec_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  EC_PKEY_CTX *dctx = ctx->data;
+
+  switch (type) {
+    case EVP_PKEY_CTRL_MD:
+      if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
+          EVP_MD_type((const EVP_MD *)p2) != NID_sha512) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_DIGEST_TYPE);
+        return 0;
+      }
+      dctx->md = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_MD:
+      *(const EVP_MD **)p2 = dctx->md;
+      return 1;
+
+    case EVP_PKEY_CTRL_PEER_KEY:
+      // Default behaviour is OK
+      return 1;
+
+    case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID: {
+      EC_GROUP *group = EC_GROUP_new_by_curve_name(p1);
+      if (group == NULL) {
+        return 0;
+      }
+      EC_GROUP_free(dctx->gen_group);
+      dctx->gen_group = group;
+      return 1;
+    }
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  const EC_GROUP *group = dctx->gen_group;
+  if (group == NULL) {
+    if (ctx->pkey == NULL) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_NO_PARAMETERS_SET);
+      return 0;
+    }
+    group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
+  }
+  EC_KEY *ec = EC_KEY_new();
+  if (ec == NULL ||
+      !EC_KEY_set_group(ec, group) ||
+      !EC_KEY_generate_key(ec)) {
+    EC_KEY_free(ec);
+    return 0;
+  }
+  EVP_PKEY_assign_EC_KEY(pkey, ec);
+  return 1;
+}
+
+static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  EC_PKEY_CTX *dctx = ctx->data;
+  if (dctx->gen_group == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_PARAMETERS_SET);
+    return 0;
+  }
+  EC_KEY *ec = EC_KEY_new();
+  if (ec == NULL ||
+      !EC_KEY_set_group(ec, dctx->gen_group)) {
+    EC_KEY_free(ec);
+    return 0;
+  }
+  EVP_PKEY_assign_EC_KEY(pkey, ec);
+  return 1;
+}
+
+const EVP_PKEY_METHOD ec_pkey_meth = {
+    EVP_PKEY_EC,
+    pkey_ec_init,
+    pkey_ec_copy,
+    pkey_ec_cleanup,
+    pkey_ec_keygen,
+    pkey_ec_sign,
+    NULL /* sign_message */,
+    pkey_ec_verify,
+    NULL /* verify_message */,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    pkey_ec_derive,
+    pkey_ec_paramgen,
+    pkey_ec_ctrl,
+};
+
+int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, EVP_PKEY_OP_TYPE_GEN,
+                           EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL);
+}
+
+int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int encoding) {
+  // BoringSSL only supports named curve syntax.
+  if (encoding != OPENSSL_EC_NAMED_CURVE) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PARAMETERS);
+    return 0;
+  }
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c
new file mode 100644
index 0000000..5c0bec5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c	
@@ -0,0 +1,255 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+static int eckey_pub_encode(CBB *out, const EVP_PKEY *key) {
+  const EC_KEY *ec_key = key->pkey.ec;
+  const EC_GROUP *group = EC_KEY_get0_group(ec_key);
+  const EC_POINT *public_key = EC_KEY_get0_public_key(ec_key);
+
+  // See RFC 5480, section 2.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ec_asn1_meth.oid, ec_asn1_meth.oid_len) ||
+      !EC_KEY_marshal_curve_name(&algorithm, group) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !EC_POINT_point2cbb(&key_bitstring, group, public_key,
+                          POINT_CONVERSION_UNCOMPRESSED, NULL) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int eckey_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 5480, section 2.
+
+  // The parameters are a named curve.
+  EC_POINT *point = NULL;
+  EC_KEY *eckey = NULL;
+  EC_GROUP *group = EC_KEY_parse_curve_name(params);
+  if (group == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  eckey = EC_KEY_new();
+  if (eckey == NULL || !EC_KEY_set_group(eckey, group)) {
+    goto err;
+  }
+
+  point = EC_POINT_new(group);
+  if (point == NULL ||
+      !EC_POINT_oct2point(group, point, CBS_data(key), CBS_len(key), NULL) ||
+      !EC_KEY_set_public_key(eckey, point)) {
+    goto err;
+  }
+
+  EC_GROUP_free(group);
+  EC_POINT_free(point);
+  EVP_PKEY_assign_EC_KEY(out, eckey);
+  return 1;
+
+err:
+  EC_GROUP_free(group);
+  EC_POINT_free(point);
+  EC_KEY_free(eckey);
+  return 0;
+}
+
+static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  int r;
+  const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
+  const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
+                 *pb = EC_KEY_get0_public_key(b->pkey.ec);
+  r = EC_POINT_cmp(group, pa, pb, NULL);
+  if (r == 0) {
+    return 1;
+  } else if (r == 1) {
+    return 0;
+  } else {
+    return -2;
+  }
+}
+
+static int eckey_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 5915.
+  EC_GROUP *group = EC_KEY_parse_parameters(params);
+  if (group == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    EC_GROUP_free(group);
+    return 0;
+  }
+
+  EC_KEY *ec_key = EC_KEY_parse_private_key(key, group);
+  EC_GROUP_free(group);
+  if (ec_key == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    EC_KEY_free(ec_key);
+    return 0;
+  }
+
+  EVP_PKEY_assign_EC_KEY(out, ec_key);
+  return 1;
+}
+
+static int eckey_priv_encode(CBB *out, const EVP_PKEY *key) {
+  const EC_KEY *ec_key = key->pkey.ec;
+
+  // Omit the redundant copy of the curve name. This contradicts RFC 5915 but
+  // aligns with PKCS #11. SEC 1 only says they may be omitted if known by other
+  // means. Both OpenSSL and NSS omit the redundant parameters, so we omit them
+  // as well.
+  unsigned enc_flags = EC_KEY_get_enc_flags(ec_key) | EC_PKEY_NO_PARAMETERS;
+
+  // See RFC 5915.
+  CBB pkcs8, algorithm, oid, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ec_asn1_meth.oid, ec_asn1_meth.oid_len) ||
+      !EC_KEY_marshal_curve_name(&algorithm, EC_KEY_get0_group(ec_key)) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !EC_KEY_marshal_private_key(&private_key, ec_key, enc_flags) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int int_ec_size(const EVP_PKEY *pkey) {
+  return ECDSA_size(pkey->pkey.ec);
+}
+
+static int ec_bits(const EVP_PKEY *pkey) {
+  const EC_GROUP *group = EC_KEY_get0_group(pkey->pkey.ec);
+  if (group == NULL) {
+    ERR_clear_error();
+    return 0;
+  }
+  return BN_num_bits(EC_GROUP_get0_order(group));
+}
+
+static int ec_missing_parameters(const EVP_PKEY *pkey) {
+  return EC_KEY_get0_group(pkey->pkey.ec) == NULL;
+}
+
+static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  return EC_KEY_set_group(to->pkey.ec, EC_KEY_get0_group(from->pkey.ec));
+}
+
+static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
+                 *group_b = EC_KEY_get0_group(b->pkey.ec);
+  if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) {
+    // mismatch
+    return 0;
+  }
+  return 1;
+}
+
+static void int_ec_free(EVP_PKEY *pkey) { EC_KEY_free(pkey->pkey.ec); }
+
+static int eckey_opaque(const EVP_PKEY *pkey) {
+  return EC_KEY_is_opaque(pkey->pkey.ec);
+}
+
+const EVP_PKEY_ASN1_METHOD ec_asn1_meth = {
+  EVP_PKEY_EC,
+  // 1.2.840.10045.2.1
+  {0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01}, 7,
+
+  eckey_pub_decode,
+  eckey_pub_encode,
+  eckey_pub_cmp,
+
+  eckey_priv_decode,
+  eckey_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  eckey_opaque,
+
+  int_ec_size,
+  ec_bits,
+
+  ec_missing_parameters,
+  ec_copy_parameters,
+  ec_cmp_parameters,
+
+  int_ec_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c.grpc_back
new file mode 100644
index 0000000..dedc5e0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ec_asn1.c.grpc_back	
@@ -0,0 +1,255 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/ec.h>
+#include <openssl/ec_key.h>
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+static int eckey_pub_encode(CBB *out, const EVP_PKEY *key) {
+  const EC_KEY *ec_key = key->pkey.ec;
+  const EC_GROUP *group = EC_KEY_get0_group(ec_key);
+  const EC_POINT *public_key = EC_KEY_get0_public_key(ec_key);
+
+  // See RFC 5480, section 2.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ec_asn1_meth.oid, ec_asn1_meth.oid_len) ||
+      !EC_KEY_marshal_curve_name(&algorithm, group) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !EC_POINT_point2cbb(&key_bitstring, group, public_key,
+                          POINT_CONVERSION_UNCOMPRESSED, NULL) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int eckey_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 5480, section 2.
+
+  // The parameters are a named curve.
+  EC_POINT *point = NULL;
+  EC_KEY *eckey = NULL;
+  EC_GROUP *group = EC_KEY_parse_curve_name(params);
+  if (group == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    goto err;
+  }
+
+  eckey = EC_KEY_new();
+  if (eckey == NULL || !EC_KEY_set_group(eckey, group)) {
+    goto err;
+  }
+
+  point = EC_POINT_new(group);
+  if (point == NULL ||
+      !EC_POINT_oct2point(group, point, CBS_data(key), CBS_len(key), NULL) ||
+      !EC_KEY_set_public_key(eckey, point)) {
+    goto err;
+  }
+
+  EC_GROUP_free(group);
+  EC_POINT_free(point);
+  EVP_PKEY_assign_EC_KEY(out, eckey);
+  return 1;
+
+err:
+  EC_GROUP_free(group);
+  EC_POINT_free(point);
+  EC_KEY_free(eckey);
+  return 0;
+}
+
+static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  int r;
+  const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
+  const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
+                 *pb = EC_KEY_get0_public_key(b->pkey.ec);
+  r = EC_POINT_cmp(group, pa, pb, NULL);
+  if (r == 0) {
+    return 1;
+  } else if (r == 1) {
+    return 0;
+  } else {
+    return -2;
+  }
+}
+
+static int eckey_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 5915.
+  EC_GROUP *group = EC_KEY_parse_parameters(params);
+  if (group == NULL || CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    EC_GROUP_free(group);
+    return 0;
+  }
+
+  EC_KEY *ec_key = EC_KEY_parse_private_key(key, group);
+  EC_GROUP_free(group);
+  if (ec_key == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    EC_KEY_free(ec_key);
+    return 0;
+  }
+
+  EVP_PKEY_assign_EC_KEY(out, ec_key);
+  return 1;
+}
+
+static int eckey_priv_encode(CBB *out, const EVP_PKEY *key) {
+  const EC_KEY *ec_key = key->pkey.ec;
+
+  // Omit the redundant copy of the curve name. This contradicts RFC 5915 but
+  // aligns with PKCS #11. SEC 1 only says they may be omitted if known by other
+  // means. Both OpenSSL and NSS omit the redundant parameters, so we omit them
+  // as well.
+  unsigned enc_flags = EC_KEY_get_enc_flags(ec_key) | EC_PKEY_NO_PARAMETERS;
+
+  // See RFC 5915.
+  CBB pkcs8, algorithm, oid, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ec_asn1_meth.oid, ec_asn1_meth.oid_len) ||
+      !EC_KEY_marshal_curve_name(&algorithm, EC_KEY_get0_group(ec_key)) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !EC_KEY_marshal_private_key(&private_key, ec_key, enc_flags) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int int_ec_size(const EVP_PKEY *pkey) {
+  return ECDSA_size(pkey->pkey.ec);
+}
+
+static int ec_bits(const EVP_PKEY *pkey) {
+  const EC_GROUP *group = EC_KEY_get0_group(pkey->pkey.ec);
+  if (group == NULL) {
+    ERR_clear_error();
+    return 0;
+  }
+  return BN_num_bits(EC_GROUP_get0_order(group));
+}
+
+static int ec_missing_parameters(const EVP_PKEY *pkey) {
+  return EC_KEY_get0_group(pkey->pkey.ec) == NULL;
+}
+
+static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
+  return EC_KEY_set_group(to->pkey.ec, EC_KEY_get0_group(from->pkey.ec));
+}
+
+static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
+                 *group_b = EC_KEY_get0_group(b->pkey.ec);
+  if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) {
+    // mismatch
+    return 0;
+  }
+  return 1;
+}
+
+static void int_ec_free(EVP_PKEY *pkey) { EC_KEY_free(pkey->pkey.ec); }
+
+static int eckey_opaque(const EVP_PKEY *pkey) {
+  return EC_KEY_is_opaque(pkey->pkey.ec);
+}
+
+const EVP_PKEY_ASN1_METHOD ec_asn1_meth = {
+  EVP_PKEY_EC,
+  // 1.2.840.10045.2.1
+  {0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01}, 7,
+
+  eckey_pub_decode,
+  eckey_pub_encode,
+  eckey_pub_cmp,
+
+  eckey_priv_decode,
+  eckey_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  eckey_opaque,
+
+  int_ec_size,
+  ec_bits,
+
+  ec_missing_parameters,
+  ec_copy_parameters,
+  ec_cmp_parameters,
+
+  int_ec_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c
new file mode 100644
index 0000000..d520ed2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c	
@@ -0,0 +1,104 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/curve25519.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+
+
+// Ed25519 has no parameters to copy.
+static int pkey_ed25519_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { return 1; }
+
+static int pkey_ed25519_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!EVP_PKEY_set_type(pkey, EVP_PKEY_ED25519)) {
+    OPENSSL_free(key);
+    return 0;
+  }
+
+  uint8_t pubkey_unused[32];
+  ED25519_keypair(pubkey_unused, key->key.priv);
+  key->has_private = 1;
+
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int pkey_ed25519_sign_message(EVP_PKEY_CTX *ctx, uint8_t *sig,
+                                     size_t *siglen, const uint8_t *tbs,
+                                     size_t tbslen) {
+  ED25519_KEY *key = ctx->pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (sig == NULL) {
+    *siglen = 64;
+    return 1;
+  }
+
+  if (*siglen < 64) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!ED25519_sign(sig, tbs, tbslen, key->key.priv)) {
+    return 0;
+  }
+
+  *siglen = 64;
+  return 1;
+}
+
+static int pkey_ed25519_verify_message(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                                       size_t siglen, const uint8_t *tbs,
+                                       size_t tbslen) {
+  ED25519_KEY *key = ctx->pkey->pkey.ptr;
+  if (siglen != 64 ||
+      !ED25519_verify(tbs, tbslen, sig, key->key.pub.value)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_SIGNATURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+const EVP_PKEY_METHOD ed25519_pkey_meth = {
+    EVP_PKEY_ED25519,
+    NULL /* init */,
+    pkey_ed25519_copy,
+    NULL /* cleanup */,
+    pkey_ed25519_keygen,
+    NULL /* sign */,
+    pkey_ed25519_sign_message,
+    NULL /* verify */,
+    pkey_ed25519_verify_message,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    NULL /* derive */,
+    NULL /* paramgen */,
+    NULL /* ctrl */,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c.grpc_back
new file mode 100644
index 0000000..9149afb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519.c.grpc_back	
@@ -0,0 +1,104 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/evp.h>
+
+#include <openssl/curve25519.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+
+
+// Ed25519 has no parameters to copy.
+static int pkey_ed25519_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { return 1; }
+
+static int pkey_ed25519_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!EVP_PKEY_set_type(pkey, EVP_PKEY_ED25519)) {
+    OPENSSL_free(key);
+    return 0;
+  }
+
+  uint8_t pubkey_unused[32];
+  ED25519_keypair(pubkey_unused, key->key.priv);
+  key->has_private = 1;
+
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int pkey_ed25519_sign_message(EVP_PKEY_CTX *ctx, uint8_t *sig,
+                                     size_t *siglen, const uint8_t *tbs,
+                                     size_t tbslen) {
+  ED25519_KEY *key = ctx->pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (sig == NULL) {
+    *siglen = 64;
+    return 1;
+  }
+
+  if (*siglen < 64) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!ED25519_sign(sig, tbs, tbslen, key->key.priv)) {
+    return 0;
+  }
+
+  *siglen = 64;
+  return 1;
+}
+
+static int pkey_ed25519_verify_message(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                                       size_t siglen, const uint8_t *tbs,
+                                       size_t tbslen) {
+  ED25519_KEY *key = ctx->pkey->pkey.ptr;
+  if (siglen != 64 ||
+      !ED25519_verify(tbs, tbslen, sig, key->key.pub.value)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_SIGNATURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+const EVP_PKEY_METHOD ed25519_pkey_meth = {
+    EVP_PKEY_ED25519,
+    NULL /* init */,
+    pkey_ed25519_copy,
+    NULL /* cleanup */,
+    pkey_ed25519_keygen,
+    NULL /* sign */,
+    pkey_ed25519_sign_message,
+    NULL /* verify */,
+    pkey_ed25519_verify_message,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    NULL /* derive */,
+    NULL /* paramgen */,
+    NULL /* ctrl */,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c
new file mode 100644
index 0000000..632ee5b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c	
@@ -0,0 +1,221 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/curve25519.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static void ed25519_free(EVP_PKEY *pkey) {
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = NULL;
+}
+
+static int ed25519_set_priv_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The RFC 8032 encoding stores only the 32-byte seed, so we must recover the
+  // full representation which we use from it.
+  uint8_t pubkey_unused[32];
+  ED25519_keypair_from_seed(pubkey_unused, key->key.priv, in);
+  key->has_private = 1;
+
+  ed25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int ed25519_set_pub_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->key.pub.value, in, 32);
+  key->has_private = 0;
+
+  ed25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int ed25519_get_priv_raw(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  // The raw private key format is the first 32 bytes of the private key.
+  OPENSSL_memcpy(out, key->key.priv, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int ed25519_get_pub_raw(const EVP_PKEY *pkey, uint8_t *out,
+                               size_t *out_len) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->key.pub.value, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int ed25519_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 4.
+
+  // The parameters must be omitted. Public keys have length 32.
+  if (CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return ed25519_set_pub_raw(out, CBS_data(key), CBS_len(key));
+}
+
+static int ed25519_pub_encode(CBB *out, const EVP_PKEY *pkey) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+
+  // See RFC 8410, section 4.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ed25519_asn1_meth.oid, ed25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !CBB_add_bytes(&key_bitstring, key->key.pub.value, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ed25519_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const ED25519_KEY *a_key = a->pkey.ptr;
+  const ED25519_KEY *b_key = b->pkey.ptr;
+  return OPENSSL_memcmp(a_key->key.pub.value, b_key->key.pub.value, 32) == 0;
+}
+
+static int ed25519_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 7.
+
+  // Parameters must be empty. The key is a 32-byte value wrapped in an extra
+  // OCTET STRING layer.
+  CBS inner;
+  if (CBS_len(params) != 0 ||
+      !CBS_get_asn1(key, &inner, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return ed25519_set_priv_raw(out, CBS_data(&inner), CBS_len(&inner));
+}
+
+static int ed25519_priv_encode(CBB *out, const EVP_PKEY *pkey) {
+  ED25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  // See RFC 8410, section 7.
+  CBB pkcs8, algorithm, oid, private_key, inner;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ed25519_asn1_meth.oid, ed25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_asn1(&private_key, &inner, CBS_ASN1_OCTETSTRING) ||
+      // The PKCS#8 encoding stores only the 32-byte seed which is the first 32
+      // bytes of the private key.
+      !CBB_add_bytes(&inner, key->key.priv, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ed25519_size(const EVP_PKEY *pkey) { return 64; }
+
+static int ed25519_bits(const EVP_PKEY *pkey) { return 253; }
+
+const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth = {
+    EVP_PKEY_ED25519,
+    {0x2b, 0x65, 0x70},
+    3,
+    ed25519_pub_decode,
+    ed25519_pub_encode,
+    ed25519_pub_cmp,
+    ed25519_priv_decode,
+    ed25519_priv_encode,
+    ed25519_set_priv_raw,
+    ed25519_set_pub_raw,
+    ed25519_get_priv_raw,
+    ed25519_get_pub_raw,
+    NULL /* pkey_opaque */,
+    ed25519_size,
+    ed25519_bits,
+    NULL /* param_missing */,
+    NULL /* param_copy */,
+    NULL /* param_cmp */,
+    ed25519_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c.grpc_back
new file mode 100644
index 0000000..1f996cf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_ed25519_asn1.c.grpc_back	
@@ -0,0 +1,221 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/evp.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/curve25519.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static void ed25519_free(EVP_PKEY *pkey) {
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = NULL;
+}
+
+static int ed25519_set_priv_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The RFC 8032 encoding stores only the 32-byte seed, so we must recover the
+  // full representation which we use from it.
+  uint8_t pubkey_unused[32];
+  ED25519_keypair_from_seed(pubkey_unused, key->key.priv, in);
+  key->has_private = 1;
+
+  ed25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int ed25519_set_pub_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  ED25519_KEY *key = OPENSSL_malloc(sizeof(ED25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->key.pub.value, in, 32);
+  key->has_private = 0;
+
+  ed25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int ed25519_get_priv_raw(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  // The raw private key format is the first 32 bytes of the private key.
+  OPENSSL_memcpy(out, key->key.priv, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int ed25519_get_pub_raw(const EVP_PKEY *pkey, uint8_t *out,
+                               size_t *out_len) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->key.pub.value, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int ed25519_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 4.
+
+  // The parameters must be omitted. Public keys have length 32.
+  if (CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return ed25519_set_pub_raw(out, CBS_data(key), CBS_len(key));
+}
+
+static int ed25519_pub_encode(CBB *out, const EVP_PKEY *pkey) {
+  const ED25519_KEY *key = pkey->pkey.ptr;
+
+  // See RFC 8410, section 4.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ed25519_asn1_meth.oid, ed25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !CBB_add_bytes(&key_bitstring, key->key.pub.value, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ed25519_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const ED25519_KEY *a_key = a->pkey.ptr;
+  const ED25519_KEY *b_key = b->pkey.ptr;
+  return OPENSSL_memcmp(a_key->key.pub.value, b_key->key.pub.value, 32) == 0;
+}
+
+static int ed25519_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 7.
+
+  // Parameters must be empty. The key is a 32-byte value wrapped in an extra
+  // OCTET STRING layer.
+  CBS inner;
+  if (CBS_len(params) != 0 ||
+      !CBS_get_asn1(key, &inner, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return ed25519_set_priv_raw(out, CBS_data(&inner), CBS_len(&inner));
+}
+
+static int ed25519_priv_encode(CBB *out, const EVP_PKEY *pkey) {
+  ED25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  // See RFC 8410, section 7.
+  CBB pkcs8, algorithm, oid, private_key, inner;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, ed25519_asn1_meth.oid, ed25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_asn1(&private_key, &inner, CBS_ASN1_OCTETSTRING) ||
+      // The PKCS#8 encoding stores only the 32-byte seed which is the first 32
+      // bytes of the private key.
+      !CBB_add_bytes(&inner, key->key.priv, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ed25519_size(const EVP_PKEY *pkey) { return 64; }
+
+static int ed25519_bits(const EVP_PKEY *pkey) { return 253; }
+
+const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth = {
+    EVP_PKEY_ED25519,
+    {0x2b, 0x65, 0x70},
+    3,
+    ed25519_pub_decode,
+    ed25519_pub_encode,
+    ed25519_pub_cmp,
+    ed25519_priv_decode,
+    ed25519_priv_encode,
+    ed25519_set_priv_raw,
+    ed25519_set_pub_raw,
+    ed25519_get_priv_raw,
+    ed25519_get_pub_raw,
+    NULL /* pkey_opaque */,
+    ed25519_size,
+    ed25519_bits,
+    NULL /* param_missing */,
+    NULL /* param_copy */,
+    NULL /* param_cmp */,
+    ed25519_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c
new file mode 100644
index 0000000..04a4f22
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c	
@@ -0,0 +1,648 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rsa.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rsa/internal.h"
+#include "internal.h"
+
+
+typedef struct {
+  // Key gen parameters
+  int nbits;
+  BIGNUM *pub_exp;
+  // RSA padding mode
+  int pad_mode;
+  // message digest
+  const EVP_MD *md;
+  // message digest for MGF1
+  const EVP_MD *mgf1md;
+  // PSS salt length
+  int saltlen;
+  // tbuf is a buffer which is either NULL, or is the size of the RSA modulus.
+  // It's used to store the output of RSA operations.
+  uint8_t *tbuf;
+  // OAEP label
+  uint8_t *oaep_label;
+  size_t oaep_labellen;
+} RSA_PKEY_CTX;
+
+typedef struct {
+  uint8_t *data;
+  size_t len;
+} RSA_OAEP_LABEL_PARAMS;
+
+static int pkey_rsa_init(EVP_PKEY_CTX *ctx) {
+  RSA_PKEY_CTX *rctx;
+  rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX));
+  if (!rctx) {
+    return 0;
+  }
+  OPENSSL_memset(rctx, 0, sizeof(RSA_PKEY_CTX));
+
+  rctx->nbits = 2048;
+  rctx->pad_mode = RSA_PKCS1_PADDING;
+  rctx->saltlen = -2;
+
+  ctx->data = rctx;
+
+  return 1;
+}
+
+static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) {
+  RSA_PKEY_CTX *dctx, *sctx;
+  if (!pkey_rsa_init(dst)) {
+    return 0;
+  }
+  sctx = src->data;
+  dctx = dst->data;
+  dctx->nbits = sctx->nbits;
+  if (sctx->pub_exp) {
+    dctx->pub_exp = BN_dup(sctx->pub_exp);
+    if (!dctx->pub_exp) {
+      return 0;
+    }
+  }
+
+  dctx->pad_mode = sctx->pad_mode;
+  dctx->md = sctx->md;
+  dctx->mgf1md = sctx->mgf1md;
+  dctx->saltlen = sctx->saltlen;
+  if (sctx->oaep_label) {
+    OPENSSL_free(dctx->oaep_label);
+    dctx->oaep_label = OPENSSL_memdup(sctx->oaep_label, sctx->oaep_labellen);
+    if (!dctx->oaep_label) {
+      return 0;
+    }
+    dctx->oaep_labellen = sctx->oaep_labellen;
+  }
+
+  return 1;
+}
+
+static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+
+  if (rctx == NULL) {
+    return;
+  }
+
+  BN_free(rctx->pub_exp);
+  OPENSSL_free(rctx->tbuf);
+  OPENSSL_free(rctx->oaep_label);
+  OPENSSL_free(rctx);
+}
+
+static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) {
+  if (ctx->tbuf) {
+    return 1;
+  }
+  ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey));
+  if (!ctx->tbuf) {
+    return 0;
+  }
+  return 1;
+}
+
+static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                         const uint8_t *tbs, size_t tbslen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!sig) {
+    *siglen = key_len;
+    return 1;
+  }
+
+  if (*siglen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->md) {
+    unsigned out_len;
+    switch (rctx->pad_mode) {
+      case RSA_PKCS1_PADDING:
+        if (!RSA_sign(EVP_MD_type(rctx->md), tbs, tbslen, sig, &out_len, rsa)) {
+          return 0;
+        }
+        *siglen = out_len;
+        return 1;
+
+      case RSA_PKCS1_PSS_PADDING:
+        return RSA_sign_pss_mgf1(rsa, siglen, sig, *siglen, tbs, tbslen,
+                                 rctx->md, rctx->mgf1md, rctx->saltlen);
+
+      default:
+        return 0;
+    }
+  }
+
+  return RSA_sign_raw(rsa, siglen, sig, *siglen, tbs, tbslen, rctx->pad_mode);
+}
+
+static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                           size_t siglen, const uint8_t *tbs,
+                           size_t tbslen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+
+  if (rctx->md) {
+    switch (rctx->pad_mode) {
+      case RSA_PKCS1_PADDING:
+        return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, sig, siglen, rsa);
+
+      case RSA_PKCS1_PSS_PADDING:
+        return RSA_verify_pss_mgf1(rsa, tbs, tbslen, rctx->md, rctx->mgf1md,
+                                   rctx->saltlen, sig, siglen);
+
+      default:
+        return 0;
+    }
+  }
+
+  size_t rslen;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+  if (!setup_tbuf(rctx, ctx) ||
+      !RSA_verify_raw(rsa, &rslen, rctx->tbuf, key_len, sig, siglen,
+                      rctx->pad_mode) ||
+      rslen != tbslen ||
+      CRYPTO_memcmp(tbs, rctx->tbuf, rslen) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int pkey_rsa_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                   size_t *out_len, const uint8_t *sig,
+                                   size_t sig_len) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (out == NULL) {
+    *out_len = key_len;
+    return 1;
+  }
+
+  if (*out_len < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->md == NULL) {
+    return RSA_verify_raw(rsa, out_len, out, *out_len, sig, sig_len,
+                          rctx->pad_mode);
+  }
+
+  if (rctx->pad_mode != RSA_PKCS1_PADDING) {
+    return 0;
+  }
+
+  // Assemble the encoded hash, using a placeholder hash value.
+  static const uint8_t kDummyHash[EVP_MAX_MD_SIZE] = {0};
+  const size_t hash_len = EVP_MD_size(rctx->md);
+  uint8_t *asn1_prefix;
+  size_t asn1_prefix_len;
+  int asn1_prefix_allocated;
+  if (!setup_tbuf(rctx, ctx) ||
+      !RSA_add_pkcs1_prefix(&asn1_prefix, &asn1_prefix_len,
+                            &asn1_prefix_allocated, EVP_MD_type(rctx->md),
+                            kDummyHash, hash_len)) {
+    return 0;
+  }
+
+  size_t rslen;
+  int ok = 1;
+  if (!RSA_verify_raw(rsa, &rslen, rctx->tbuf, key_len, sig, sig_len,
+                      RSA_PKCS1_PADDING) ||
+      rslen != asn1_prefix_len ||
+      // Compare all but the hash suffix.
+      CRYPTO_memcmp(rctx->tbuf, asn1_prefix, asn1_prefix_len - hash_len) != 0) {
+    ok = 0;
+  }
+
+  if (asn1_prefix_allocated) {
+    OPENSSL_free(asn1_prefix);
+  }
+
+  if (!ok) {
+    return 0;
+  }
+
+  if (out != NULL) {
+    OPENSSL_memcpy(out, rctx->tbuf + rslen - hash_len, hash_len);
+  }
+  *out_len = hash_len;
+
+  return 1;
+}
+
+static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                            const uint8_t *in, size_t inlen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!out) {
+    *outlen = key_len;
+    return 1;
+  }
+
+  if (*outlen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) {
+    if (!setup_tbuf(rctx, ctx) ||
+        !RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, key_len, in, inlen,
+                                         rctx->oaep_label, rctx->oaep_labellen,
+                                         rctx->md, rctx->mgf1md) ||
+        !RSA_encrypt(rsa, outlen, out, *outlen, rctx->tbuf, key_len,
+                     RSA_NO_PADDING)) {
+      return 0;
+    }
+    return 1;
+  }
+
+  return RSA_encrypt(rsa, outlen, out, *outlen, in, inlen, rctx->pad_mode);
+}
+
+static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                            size_t *outlen, const uint8_t *in,
+                            size_t inlen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!out) {
+    *outlen = key_len;
+    return 1;
+  }
+
+  if (*outlen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) {
+    size_t padded_len;
+    if (!setup_tbuf(rctx, ctx) ||
+        !RSA_decrypt(rsa, &padded_len, rctx->tbuf, key_len, in, inlen,
+                     RSA_NO_PADDING) ||
+        !RSA_padding_check_PKCS1_OAEP_mgf1(
+            out, outlen, key_len, rctx->tbuf, padded_len, rctx->oaep_label,
+            rctx->oaep_labellen, rctx->md, rctx->mgf1md)) {
+      return 0;
+    }
+    return 1;
+  }
+
+  return RSA_decrypt(rsa, outlen, out, key_len, in, inlen, rctx->pad_mode);
+}
+
+static int check_padding_md(const EVP_MD *md, int padding) {
+  if (!md) {
+    return 1;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int is_known_padding(int padding_mode) {
+  switch (padding_mode) {
+    case RSA_PKCS1_PADDING:
+    case RSA_NO_PADDING:
+    case RSA_PKCS1_OAEP_PADDING:
+    case RSA_PKCS1_PSS_PADDING:
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  switch (type) {
+    case EVP_PKEY_CTRL_RSA_PADDING:
+      if (!is_known_padding(p1) || !check_padding_md(rctx->md, p1) ||
+          (p1 == RSA_PKCS1_PSS_PADDING &&
+           0 == (ctx->operation & (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) ||
+          (p1 == RSA_PKCS1_OAEP_PADDING &&
+           0 == (ctx->operation & EVP_PKEY_OP_TYPE_CRYPT))) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
+        return 0;
+      }
+      if ((p1 == RSA_PKCS1_PSS_PADDING || p1 == RSA_PKCS1_OAEP_PADDING) &&
+          rctx->md == NULL) {
+        rctx->md = EVP_sha1();
+      }
+      rctx->pad_mode = p1;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_RSA_PADDING:
+      *(int *)p2 = rctx->pad_mode;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
+    case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
+      if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PSS_SALTLEN);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) {
+        *(int *)p2 = rctx->saltlen;
+      } else {
+        if (p1 < -2) {
+          return 0;
+        }
+        rctx->saltlen = p1;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
+      if (p1 < 256) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_KEYBITS);
+        return 0;
+      }
+      rctx->nbits = p1;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
+      if (!p2) {
+        return 0;
+      }
+      BN_free(rctx->pub_exp);
+      rctx->pub_exp = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_OAEP_MD:
+    case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) {
+        *(const EVP_MD **)p2 = rctx->md;
+      } else {
+        rctx->md = p2;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_MD:
+      if (!check_padding_md(p2, rctx->pad_mode)) {
+        return 0;
+      }
+      rctx->md = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_MD:
+      *(const EVP_MD **)p2 = rctx->md;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_MGF1_MD:
+    case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
+      if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING &&
+          rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_MGF1_MD);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) {
+        if (rctx->mgf1md) {
+          *(const EVP_MD **)p2 = rctx->mgf1md;
+        } else {
+          *(const EVP_MD **)p2 = rctx->md;
+        }
+      } else {
+        rctx->mgf1md = p2;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_OAEP_LABEL: {
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      OPENSSL_free(rctx->oaep_label);
+      RSA_OAEP_LABEL_PARAMS *params = p2;
+      rctx->oaep_label = params->data;
+      rctx->oaep_labellen = params->len;
+      return 1;
+    }
+
+    case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      CBS_init((CBS *)p2, rctx->oaep_label, rctx->oaep_labellen);
+      return 1;
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  RSA *rsa = NULL;
+  RSA_PKEY_CTX *rctx = ctx->data;
+
+  if (!rctx->pub_exp) {
+    rctx->pub_exp = BN_new();
+    if (!rctx->pub_exp || !BN_set_word(rctx->pub_exp, RSA_F4)) {
+      return 0;
+    }
+  }
+  rsa = RSA_new();
+  if (!rsa) {
+    return 0;
+  }
+
+  if (!RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, NULL)) {
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(pkey, rsa);
+  return 1;
+}
+
+const EVP_PKEY_METHOD rsa_pkey_meth = {
+    EVP_PKEY_RSA,
+    pkey_rsa_init,
+    pkey_rsa_copy,
+    pkey_rsa_cleanup,
+    pkey_rsa_keygen,
+    pkey_rsa_sign,
+    NULL /* sign_message */,
+    pkey_rsa_verify,
+    NULL /* verify_message */,
+    pkey_rsa_verify_recover,
+    pkey_rsa_encrypt,
+    pkey_rsa_decrypt,
+    NULL /* derive */,
+    NULL /* paramgen */,
+    pkey_rsa_ctrl,
+};
+
+int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_RSA_PADDING,
+                           padding, NULL);
+}
+
+int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *out_padding) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_GET_RSA_PADDING,
+                           0, out_padding);
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx, int salt_len) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx,
+                                            const EVP_MD *md) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int salt_len) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY),
+                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, salt_len, NULL);
+}
+
+int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int *out_salt_len) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY),
+                           EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, out_salt_len);
+}
+
+int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx, int bits) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN,
+                           EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL);
+}
+
+int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *e) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN,
+                           EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, e);
+}
+
+int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md);
+}
+
+int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void*) out_md);
+}
+
+int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void*) md);
+}
+
+int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void*) out_md);
+}
+
+int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, uint8_t *label,
+                                     size_t label_len) {
+  RSA_OAEP_LABEL_PARAMS params = {label, label_len};
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_OAEP_LABEL, 0, &params);
+}
+
+int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                     const uint8_t **out_label) {
+  CBS label;
+  if (!EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                         EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, &label)) {
+    return -1;
+  }
+  if (CBS_len(&label) > INT_MAX) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_OVERFLOW);
+    return -1;
+  }
+  *out_label = CBS_data(&label);
+  return (int)CBS_len(&label);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c.grpc_back
new file mode 100644
index 0000000..7872a92
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa.c.grpc_back	
@@ -0,0 +1,648 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rsa.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rsa/internal.h"
+#include "internal.h"
+
+
+typedef struct {
+  // Key gen parameters
+  int nbits;
+  BIGNUM *pub_exp;
+  // RSA padding mode
+  int pad_mode;
+  // message digest
+  const EVP_MD *md;
+  // message digest for MGF1
+  const EVP_MD *mgf1md;
+  // PSS salt length
+  int saltlen;
+  // tbuf is a buffer which is either NULL, or is the size of the RSA modulus.
+  // It's used to store the output of RSA operations.
+  uint8_t *tbuf;
+  // OAEP label
+  uint8_t *oaep_label;
+  size_t oaep_labellen;
+} RSA_PKEY_CTX;
+
+typedef struct {
+  uint8_t *data;
+  size_t len;
+} RSA_OAEP_LABEL_PARAMS;
+
+static int pkey_rsa_init(EVP_PKEY_CTX *ctx) {
+  RSA_PKEY_CTX *rctx;
+  rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX));
+  if (!rctx) {
+    return 0;
+  }
+  OPENSSL_memset(rctx, 0, sizeof(RSA_PKEY_CTX));
+
+  rctx->nbits = 2048;
+  rctx->pad_mode = RSA_PKCS1_PADDING;
+  rctx->saltlen = -2;
+
+  ctx->data = rctx;
+
+  return 1;
+}
+
+static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) {
+  RSA_PKEY_CTX *dctx, *sctx;
+  if (!pkey_rsa_init(dst)) {
+    return 0;
+  }
+  sctx = src->data;
+  dctx = dst->data;
+  dctx->nbits = sctx->nbits;
+  if (sctx->pub_exp) {
+    dctx->pub_exp = BN_dup(sctx->pub_exp);
+    if (!dctx->pub_exp) {
+      return 0;
+    }
+  }
+
+  dctx->pad_mode = sctx->pad_mode;
+  dctx->md = sctx->md;
+  dctx->mgf1md = sctx->mgf1md;
+  dctx->saltlen = sctx->saltlen;
+  if (sctx->oaep_label) {
+    OPENSSL_free(dctx->oaep_label);
+    dctx->oaep_label = OPENSSL_memdup(sctx->oaep_label, sctx->oaep_labellen);
+    if (!dctx->oaep_label) {
+      return 0;
+    }
+    dctx->oaep_labellen = sctx->oaep_labellen;
+  }
+
+  return 1;
+}
+
+static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+
+  if (rctx == NULL) {
+    return;
+  }
+
+  BN_free(rctx->pub_exp);
+  OPENSSL_free(rctx->tbuf);
+  OPENSSL_free(rctx->oaep_label);
+  OPENSSL_free(rctx);
+}
+
+static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) {
+  if (ctx->tbuf) {
+    return 1;
+  }
+  ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey));
+  if (!ctx->tbuf) {
+    return 0;
+  }
+  return 1;
+}
+
+static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
+                         const uint8_t *tbs, size_t tbslen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!sig) {
+    *siglen = key_len;
+    return 1;
+  }
+
+  if (*siglen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->md) {
+    unsigned out_len;
+    switch (rctx->pad_mode) {
+      case RSA_PKCS1_PADDING:
+        if (!RSA_sign(EVP_MD_type(rctx->md), tbs, tbslen, sig, &out_len, rsa)) {
+          return 0;
+        }
+        *siglen = out_len;
+        return 1;
+
+      case RSA_PKCS1_PSS_PADDING:
+        return RSA_sign_pss_mgf1(rsa, siglen, sig, *siglen, tbs, tbslen,
+                                 rctx->md, rctx->mgf1md, rctx->saltlen);
+
+      default:
+        return 0;
+    }
+  }
+
+  return RSA_sign_raw(rsa, siglen, sig, *siglen, tbs, tbslen, rctx->pad_mode);
+}
+
+static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                           size_t siglen, const uint8_t *tbs,
+                           size_t tbslen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+
+  if (rctx->md) {
+    switch (rctx->pad_mode) {
+      case RSA_PKCS1_PADDING:
+        return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, sig, siglen, rsa);
+
+      case RSA_PKCS1_PSS_PADDING:
+        return RSA_verify_pss_mgf1(rsa, tbs, tbslen, rctx->md, rctx->mgf1md,
+                                   rctx->saltlen, sig, siglen);
+
+      default:
+        return 0;
+    }
+  }
+
+  size_t rslen;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+  if (!setup_tbuf(rctx, ctx) ||
+      !RSA_verify_raw(rsa, &rslen, rctx->tbuf, key_len, sig, siglen,
+                      rctx->pad_mode) ||
+      rslen != tbslen ||
+      CRYPTO_memcmp(tbs, rctx->tbuf, rslen) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int pkey_rsa_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                   size_t *out_len, const uint8_t *sig,
+                                   size_t sig_len) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (out == NULL) {
+    *out_len = key_len;
+    return 1;
+  }
+
+  if (*out_len < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->md == NULL) {
+    return RSA_verify_raw(rsa, out_len, out, *out_len, sig, sig_len,
+                          rctx->pad_mode);
+  }
+
+  if (rctx->pad_mode != RSA_PKCS1_PADDING) {
+    return 0;
+  }
+
+  // Assemble the encoded hash, using a placeholder hash value.
+  static const uint8_t kDummyHash[EVP_MAX_MD_SIZE] = {0};
+  const size_t hash_len = EVP_MD_size(rctx->md);
+  uint8_t *asn1_prefix;
+  size_t asn1_prefix_len;
+  int asn1_prefix_allocated;
+  if (!setup_tbuf(rctx, ctx) ||
+      !RSA_add_pkcs1_prefix(&asn1_prefix, &asn1_prefix_len,
+                            &asn1_prefix_allocated, EVP_MD_type(rctx->md),
+                            kDummyHash, hash_len)) {
+    return 0;
+  }
+
+  size_t rslen;
+  int ok = 1;
+  if (!RSA_verify_raw(rsa, &rslen, rctx->tbuf, key_len, sig, sig_len,
+                      RSA_PKCS1_PADDING) ||
+      rslen != asn1_prefix_len ||
+      // Compare all but the hash suffix.
+      CRYPTO_memcmp(rctx->tbuf, asn1_prefix, asn1_prefix_len - hash_len) != 0) {
+    ok = 0;
+  }
+
+  if (asn1_prefix_allocated) {
+    OPENSSL_free(asn1_prefix);
+  }
+
+  if (!ok) {
+    return 0;
+  }
+
+  if (out != NULL) {
+    OPENSSL_memcpy(out, rctx->tbuf + rslen - hash_len, hash_len);
+  }
+  *out_len = hash_len;
+
+  return 1;
+}
+
+static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+                            const uint8_t *in, size_t inlen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!out) {
+    *outlen = key_len;
+    return 1;
+  }
+
+  if (*outlen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) {
+    if (!setup_tbuf(rctx, ctx) ||
+        !RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, key_len, in, inlen,
+                                         rctx->oaep_label, rctx->oaep_labellen,
+                                         rctx->md, rctx->mgf1md) ||
+        !RSA_encrypt(rsa, outlen, out, *outlen, rctx->tbuf, key_len,
+                     RSA_NO_PADDING)) {
+      return 0;
+    }
+    return 1;
+  }
+
+  return RSA_encrypt(rsa, outlen, out, *outlen, in, inlen, rctx->pad_mode);
+}
+
+static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                            size_t *outlen, const uint8_t *in,
+                            size_t inlen) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  RSA *rsa = ctx->pkey->pkey.rsa;
+  const size_t key_len = EVP_PKEY_size(ctx->pkey);
+
+  if (!out) {
+    *outlen = key_len;
+    return 1;
+  }
+
+  if (*outlen < key_len) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) {
+    size_t padded_len;
+    if (!setup_tbuf(rctx, ctx) ||
+        !RSA_decrypt(rsa, &padded_len, rctx->tbuf, key_len, in, inlen,
+                     RSA_NO_PADDING) ||
+        !RSA_padding_check_PKCS1_OAEP_mgf1(
+            out, outlen, key_len, rctx->tbuf, padded_len, rctx->oaep_label,
+            rctx->oaep_labellen, rctx->md, rctx->mgf1md)) {
+      return 0;
+    }
+    return 1;
+  }
+
+  return RSA_decrypt(rsa, outlen, out, key_len, in, inlen, rctx->pad_mode);
+}
+
+static int check_padding_md(const EVP_MD *md, int padding) {
+  if (!md) {
+    return 1;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int is_known_padding(int padding_mode) {
+  switch (padding_mode) {
+    case RSA_PKCS1_PADDING:
+    case RSA_NO_PADDING:
+    case RSA_PKCS1_OAEP_PADDING:
+    case RSA_PKCS1_PSS_PADDING:
+      return 1;
+    default:
+      return 0;
+  }
+}
+
+static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  RSA_PKEY_CTX *rctx = ctx->data;
+  switch (type) {
+    case EVP_PKEY_CTRL_RSA_PADDING:
+      if (!is_known_padding(p1) || !check_padding_md(rctx->md, p1) ||
+          (p1 == RSA_PKCS1_PSS_PADDING &&
+           0 == (ctx->operation & (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) ||
+          (p1 == RSA_PKCS1_OAEP_PADDING &&
+           0 == (ctx->operation & EVP_PKEY_OP_TYPE_CRYPT))) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
+        return 0;
+      }
+      if ((p1 == RSA_PKCS1_PSS_PADDING || p1 == RSA_PKCS1_OAEP_PADDING) &&
+          rctx->md == NULL) {
+        rctx->md = EVP_sha1();
+      }
+      rctx->pad_mode = p1;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_RSA_PADDING:
+      *(int *)p2 = rctx->pad_mode;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
+    case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
+      if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PSS_SALTLEN);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) {
+        *(int *)p2 = rctx->saltlen;
+      } else {
+        if (p1 < -2) {
+          return 0;
+        }
+        rctx->saltlen = p1;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
+      if (p1 < 256) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_KEYBITS);
+        return 0;
+      }
+      rctx->nbits = p1;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
+      if (!p2) {
+        return 0;
+      }
+      BN_free(rctx->pub_exp);
+      rctx->pub_exp = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_OAEP_MD:
+    case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) {
+        *(const EVP_MD **)p2 = rctx->md;
+      } else {
+        rctx->md = p2;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_MD:
+      if (!check_padding_md(p2, rctx->pad_mode)) {
+        return 0;
+      }
+      rctx->md = p2;
+      return 1;
+
+    case EVP_PKEY_CTRL_GET_MD:
+      *(const EVP_MD **)p2 = rctx->md;
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_MGF1_MD:
+    case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
+      if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING &&
+          rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_MGF1_MD);
+        return 0;
+      }
+      if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) {
+        if (rctx->mgf1md) {
+          *(const EVP_MD **)p2 = rctx->mgf1md;
+        } else {
+          *(const EVP_MD **)p2 = rctx->md;
+        }
+      } else {
+        rctx->mgf1md = p2;
+      }
+      return 1;
+
+    case EVP_PKEY_CTRL_RSA_OAEP_LABEL: {
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      OPENSSL_free(rctx->oaep_label);
+      RSA_OAEP_LABEL_PARAMS *params = p2;
+      rctx->oaep_label = params->data;
+      rctx->oaep_labellen = params->len;
+      return 1;
+    }
+
+    case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
+      if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) {
+        OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PADDING_MODE);
+        return 0;
+      }
+      CBS_init((CBS *)p2, rctx->oaep_label, rctx->oaep_labellen);
+      return 1;
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  RSA *rsa = NULL;
+  RSA_PKEY_CTX *rctx = ctx->data;
+
+  if (!rctx->pub_exp) {
+    rctx->pub_exp = BN_new();
+    if (!rctx->pub_exp || !BN_set_word(rctx->pub_exp, RSA_F4)) {
+      return 0;
+    }
+  }
+  rsa = RSA_new();
+  if (!rsa) {
+    return 0;
+  }
+
+  if (!RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, NULL)) {
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(pkey, rsa);
+  return 1;
+}
+
+const EVP_PKEY_METHOD rsa_pkey_meth = {
+    EVP_PKEY_RSA,
+    pkey_rsa_init,
+    pkey_rsa_copy,
+    pkey_rsa_cleanup,
+    pkey_rsa_keygen,
+    pkey_rsa_sign,
+    NULL /* sign_message */,
+    pkey_rsa_verify,
+    NULL /* verify_message */,
+    pkey_rsa_verify_recover,
+    pkey_rsa_encrypt,
+    pkey_rsa_decrypt,
+    NULL /* derive */,
+    NULL /* paramgen */,
+    pkey_rsa_ctrl,
+};
+
+int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_RSA_PADDING,
+                           padding, NULL);
+}
+
+int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *out_padding) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_GET_RSA_PADDING,
+                           0, out_padding);
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx, int salt_len) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx,
+                                            const EVP_MD *md) {
+  return 0;
+}
+
+int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int salt_len) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY),
+                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, salt_len, NULL);
+}
+
+int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int *out_salt_len) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY),
+                           EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, out_salt_len);
+}
+
+int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx, int bits) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN,
+                           EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL);
+}
+
+int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *e) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN,
+                           EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, e);
+}
+
+int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md);
+}
+
+int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void*) out_md);
+}
+
+int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void*) md);
+}
+
+int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA,
+                           EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void*) out_md);
+}
+
+int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, uint8_t *label,
+                                     size_t label_len) {
+  RSA_OAEP_LABEL_PARAMS params = {label, label_len};
+  return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                           EVP_PKEY_CTRL_RSA_OAEP_LABEL, 0, &params);
+}
+
+int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                     const uint8_t **out_label) {
+  CBS label;
+  if (!EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,
+                         EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, &label)) {
+    return -1;
+  }
+  if (CBS_len(&label) > INT_MAX) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_OVERFLOW);
+    return -1;
+  }
+  *out_label = CBS_data(&label);
+  return (int)CBS_len(&label);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c
new file mode 100644
index 0000000..1bd2eab
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c	
@@ -0,0 +1,194 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rsa.h>
+
+#include "../fipsmodule/rsa/internal.h"
+#include "internal.h"
+
+
+static int rsa_pub_encode(CBB *out, const EVP_PKEY *key) {
+  // See RFC 3279, section 2.3.1.
+  CBB spki, algorithm, oid, null, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !RSA_marshal_public_key(&key_bitstring, key->pkey.rsa) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int rsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 3279, section 2.3.1.
+
+  // The parameters must be NULL.
+  CBS null;
+  if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
+      CBS_len(&null) != 0 ||
+      CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  RSA *rsa = RSA_parse_public_key(key);
+  if (rsa == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(out, rsa);
+  return 1;
+}
+
+static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) == 0 &&
+         BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) == 0;
+}
+
+static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
+  CBB pkcs8, algorithm, oid, null, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int rsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // Per RFC 3447, A.1, the parameters have type NULL.
+  CBS null;
+  if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
+      CBS_len(&null) != 0 ||
+      CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  RSA *rsa = RSA_parse_private_key(key);
+  if (rsa == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(out, rsa);
+  return 1;
+}
+
+static int rsa_opaque(const EVP_PKEY *pkey) {
+  return RSA_is_opaque(pkey->pkey.rsa);
+}
+
+static int int_rsa_size(const EVP_PKEY *pkey) {
+  return RSA_size(pkey->pkey.rsa);
+}
+
+static int rsa_bits(const EVP_PKEY *pkey) {
+  return RSA_bits(pkey->pkey.rsa);
+}
+
+static void int_rsa_free(EVP_PKEY *pkey) { RSA_free(pkey->pkey.rsa); }
+
+const EVP_PKEY_ASN1_METHOD rsa_asn1_meth = {
+  EVP_PKEY_RSA,
+  // 1.2.840.113549.1.1.1
+  {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01}, 9,
+
+  rsa_pub_decode,
+  rsa_pub_encode,
+  rsa_pub_cmp,
+
+  rsa_priv_decode,
+  rsa_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  rsa_opaque,
+
+  int_rsa_size,
+  rsa_bits,
+
+  0,0,0,
+
+  int_rsa_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c.grpc_back
new file mode 100644
index 0000000..c097103
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_rsa_asn1.c.grpc_back	
@@ -0,0 +1,194 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/rsa.h>
+
+#include "../fipsmodule/rsa/internal.h"
+#include "internal.h"
+
+
+static int rsa_pub_encode(CBB *out, const EVP_PKEY *key) {
+  // See RFC 3279, section 2.3.1.
+  CBB spki, algorithm, oid, null, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !RSA_marshal_public_key(&key_bitstring, key->pkey.rsa) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int rsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 3279, section 2.3.1.
+
+  // The parameters must be NULL.
+  CBS null;
+  if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
+      CBS_len(&null) != 0 ||
+      CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  RSA *rsa = RSA_parse_public_key(key);
+  if (rsa == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(out, rsa);
+  return 1;
+}
+
+static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  return BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) == 0 &&
+         BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) == 0;
+}
+
+static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
+  CBB pkcs8, algorithm, oid, null, private_key;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int rsa_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // Per RFC 3447, A.1, the parameters have type NULL.
+  CBS null;
+  if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) ||
+      CBS_len(&null) != 0 ||
+      CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  RSA *rsa = RSA_parse_private_key(key);
+  if (rsa == NULL || CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    RSA_free(rsa);
+    return 0;
+  }
+
+  EVP_PKEY_assign_RSA(out, rsa);
+  return 1;
+}
+
+static int rsa_opaque(const EVP_PKEY *pkey) {
+  return RSA_is_opaque(pkey->pkey.rsa);
+}
+
+static int int_rsa_size(const EVP_PKEY *pkey) {
+  return RSA_size(pkey->pkey.rsa);
+}
+
+static int rsa_bits(const EVP_PKEY *pkey) {
+  return RSA_bits(pkey->pkey.rsa);
+}
+
+static void int_rsa_free(EVP_PKEY *pkey) { RSA_free(pkey->pkey.rsa); }
+
+const EVP_PKEY_ASN1_METHOD rsa_asn1_meth = {
+  EVP_PKEY_RSA,
+  // 1.2.840.113549.1.1.1
+  {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01}, 9,
+
+  rsa_pub_decode,
+  rsa_pub_encode,
+  rsa_pub_cmp,
+
+  rsa_priv_decode,
+  rsa_priv_encode,
+
+  NULL /* set_priv_raw */,
+  NULL /* set_pub_raw */,
+  NULL /* get_priv_raw */,
+  NULL /* get_pub_raw */,
+
+  rsa_opaque,
+
+  int_rsa_size,
+  rsa_bits,
+
+  0,0,0,
+
+  int_rsa_free,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c
new file mode 100644
index 0000000..b72ac6d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c	
@@ -0,0 +1,110 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/curve25519.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+
+
+// X25519 has no parameters to copy.
+static int pkey_x25519_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { return 1; }
+
+static int pkey_x25519_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!EVP_PKEY_set_type(pkey, EVP_PKEY_X25519)) {
+    OPENSSL_free(key);
+    return 0;
+  }
+
+  X25519_keypair(key->pub, key->priv);
+  key->has_private = 1;
+
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int pkey_x25519_derive(EVP_PKEY_CTX *ctx, uint8_t *out,
+                              size_t *out_len) {
+  if (ctx->pkey == NULL || ctx->peerkey == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  const X25519_KEY *our_key = ctx->pkey->pkey.ptr;
+  const X25519_KEY *peer_key = ctx->peerkey->pkey.ptr;
+  if (our_key == NULL || peer_key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  if (!our_key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out != NULL) {
+    if (*out_len < 32) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+      return 0;
+    }
+    if (!X25519(out, our_key->priv, peer_key->pub)) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PEER_KEY);
+      return 0;
+    }
+  }
+
+  *out_len = 32;
+  return 1;
+}
+
+static int pkey_x25519_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  switch (type) {
+    case EVP_PKEY_CTRL_PEER_KEY:
+      // |EVP_PKEY_derive_set_peer| requires the key implement this command,
+      // even if it is a no-op.
+      return 1;
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+const EVP_PKEY_METHOD x25519_pkey_meth = {
+    EVP_PKEY_X25519,
+    NULL /* init */,
+    pkey_x25519_copy,
+    NULL /* cleanup */,
+    pkey_x25519_keygen,
+    NULL /* sign */,
+    NULL /* sign_message */,
+    NULL /* verify */,
+    NULL /* verify_message */,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    pkey_x25519_derive,
+    NULL /* paramgen */,
+    pkey_x25519_ctrl,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c.grpc_back
new file mode 100644
index 0000000..ed7df39
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519.c.grpc_back	
@@ -0,0 +1,110 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/evp.h>
+
+#include <openssl/curve25519.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+
+
+// X25519 has no parameters to copy.
+static int pkey_x25519_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { return 1; }
+
+static int pkey_x25519_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!EVP_PKEY_set_type(pkey, EVP_PKEY_X25519)) {
+    OPENSSL_free(key);
+    return 0;
+  }
+
+  X25519_keypair(key->pub, key->priv);
+  key->has_private = 1;
+
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int pkey_x25519_derive(EVP_PKEY_CTX *ctx, uint8_t *out,
+                              size_t *out_len) {
+  if (ctx->pkey == NULL || ctx->peerkey == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  const X25519_KEY *our_key = ctx->pkey->pkey.ptr;
+  const X25519_KEY *peer_key = ctx->peerkey->pkey.ptr;
+  if (our_key == NULL || peer_key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_KEYS_NOT_SET);
+    return 0;
+  }
+
+  if (!our_key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out != NULL) {
+    if (*out_len < 32) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+      return 0;
+    }
+    if (!X25519(out, our_key->priv, peer_key->pub)) {
+      OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PEER_KEY);
+      return 0;
+    }
+  }
+
+  *out_len = 32;
+  return 1;
+}
+
+static int pkey_x25519_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) {
+  switch (type) {
+    case EVP_PKEY_CTRL_PEER_KEY:
+      // |EVP_PKEY_derive_set_peer| requires the key implement this command,
+      // even if it is a no-op.
+      return 1;
+
+    default:
+      OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+      return 0;
+  }
+}
+
+const EVP_PKEY_METHOD x25519_pkey_meth = {
+    EVP_PKEY_X25519,
+    NULL /* init */,
+    pkey_x25519_copy,
+    NULL /* cleanup */,
+    pkey_x25519_keygen,
+    NULL /* sign */,
+    NULL /* sign_message */,
+    NULL /* verify */,
+    NULL /* verify_message */,
+    NULL /* verify_recover */,
+    NULL /* encrypt */,
+    NULL /* decrypt */,
+    pkey_x25519_derive,
+    NULL /* paramgen */,
+    pkey_x25519_ctrl,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c
new file mode 100644
index 0000000..0e96d99
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c	
@@ -0,0 +1,248 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/curve25519.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static void x25519_free(EVP_PKEY *pkey) {
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = NULL;
+}
+
+static int x25519_set_priv_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->priv, in, 32);
+  X25519_public_from_private(key->pub, key->priv);
+  key->has_private = 1;
+
+  x25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int x25519_set_pub_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->pub, in, 32);
+  key->has_private = 0;
+
+  x25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int x25519_get_priv_raw(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->priv, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int x25519_get_pub_raw(const EVP_PKEY *pkey, uint8_t *out,
+                               size_t *out_len) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->pub, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int x25519_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 4.
+
+  // The parameters must be omitted. Public keys have length 32.
+  if (CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return x25519_set_pub_raw(out, CBS_data(key), CBS_len(key));
+}
+
+static int x25519_pub_encode(CBB *out, const EVP_PKEY *pkey) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+
+  // See RFC 8410, section 4.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, x25519_asn1_meth.oid, x25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !CBB_add_bytes(&key_bitstring, key->pub, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int x25519_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const X25519_KEY *a_key = a->pkey.ptr;
+  const X25519_KEY *b_key = b->pkey.ptr;
+  return OPENSSL_memcmp(a_key->pub, b_key->pub, 32) == 0;
+}
+
+static int x25519_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 7.
+
+  // Parameters must be empty. The key is a 32-byte value wrapped in an extra
+  // OCTET STRING layer.
+  CBS inner;
+  if (CBS_len(params) != 0 ||
+      !CBS_get_asn1(key, &inner, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return x25519_set_priv_raw(out, CBS_data(&inner), CBS_len(&inner));
+}
+
+static int x25519_priv_encode(CBB *out, const EVP_PKEY *pkey) {
+  X25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  // See RFC 8410, section 7.
+  CBB pkcs8, algorithm, oid, private_key, inner;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, x25519_asn1_meth.oid, x25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_asn1(&private_key, &inner, CBS_ASN1_OCTETSTRING) ||
+      // The PKCS#8 encoding stores only the 32-byte seed which is the first 32
+      // bytes of the private key.
+      !CBB_add_bytes(&inner, key->priv, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int x25519_size(const EVP_PKEY *pkey) { return 32; }
+
+static int x25519_bits(const EVP_PKEY *pkey) { return 253; }
+
+const EVP_PKEY_ASN1_METHOD x25519_asn1_meth = {
+    EVP_PKEY_X25519,
+    {0x2b, 0x65, 0x6e},
+    3,
+    x25519_pub_decode,
+    x25519_pub_encode,
+    x25519_pub_cmp,
+    x25519_priv_decode,
+    x25519_priv_encode,
+    x25519_set_priv_raw,
+    x25519_set_pub_raw,
+    x25519_get_priv_raw,
+    x25519_get_pub_raw,
+    NULL /* pkey_opaque */,
+    x25519_size,
+    x25519_bits,
+    NULL /* param_missing */,
+    NULL /* param_copy */,
+    NULL /* param_cmp */,
+    x25519_free,
+};
+
+int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, const uint8_t *in,
+                                   size_t len) {
+  // TODO(davidben): In OpenSSL, this function also works for |EVP_PKEY_EC|
+  // keys. Add support if it ever comes up.
+  if (pkey->type != EVP_PKEY_X25519) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  return x25519_set_pub_raw(pkey, in, len);
+}
+
+size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey, uint8_t **out_ptr) {
+  // TODO(davidben): In OpenSSL, this function also works for |EVP_PKEY_EC|
+  // keys. Add support if it ever comes up.
+  if (pkey->type != EVP_PKEY_X25519) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
+    return 0;
+  }
+
+  *out_ptr = OPENSSL_memdup(key->pub, 32);
+  return *out_ptr == NULL ? 0 : 32;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c.grpc_back
new file mode 100644
index 0000000..99b4cc9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/p_x25519_asn1.c.grpc_back	
@@ -0,0 +1,248 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/evp.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/curve25519.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+static void x25519_free(EVP_PKEY *pkey) {
+  OPENSSL_free(pkey->pkey.ptr);
+  pkey->pkey.ptr = NULL;
+}
+
+static int x25519_set_priv_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->priv, in, 32);
+  X25519_public_from_private(key->pub, key->priv);
+  key->has_private = 1;
+
+  x25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int x25519_set_pub_raw(EVP_PKEY *pkey, const uint8_t *in, size_t len) {
+  if (len != 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  X25519_KEY *key = OPENSSL_malloc(sizeof(X25519_KEY));
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(key->pub, in, 32);
+  key->has_private = 0;
+
+  x25519_free(pkey);
+  pkey->pkey.ptr = key;
+  return 1;
+}
+
+static int x25519_get_priv_raw(const EVP_PKEY *pkey, uint8_t *out,
+                                size_t *out_len) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->priv, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int x25519_get_pub_raw(const EVP_PKEY *pkey, uint8_t *out,
+                               size_t *out_len) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (out == NULL) {
+    *out_len = 32;
+    return 1;
+  }
+
+  if (*out_len < 32) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, key->pub, 32);
+  *out_len = 32;
+  return 1;
+}
+
+static int x25519_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 4.
+
+  // The parameters must be omitted. Public keys have length 32.
+  if (CBS_len(params) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return x25519_set_pub_raw(out, CBS_data(key), CBS_len(key));
+}
+
+static int x25519_pub_encode(CBB *out, const EVP_PKEY *pkey) {
+  const X25519_KEY *key = pkey->pkey.ptr;
+
+  // See RFC 8410, section 4.
+  CBB spki, algorithm, oid, key_bitstring;
+  if (!CBB_add_asn1(out, &spki, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, x25519_asn1_meth.oid, x25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&spki, &key_bitstring, CBS_ASN1_BITSTRING) ||
+      !CBB_add_u8(&key_bitstring, 0 /* padding */) ||
+      !CBB_add_bytes(&key_bitstring, key->pub, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int x25519_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
+  const X25519_KEY *a_key = a->pkey.ptr;
+  const X25519_KEY *b_key = b->pkey.ptr;
+  return OPENSSL_memcmp(a_key->pub, b_key->pub, 32) == 0;
+}
+
+static int x25519_priv_decode(EVP_PKEY *out, CBS *params, CBS *key) {
+  // See RFC 8410, section 7.
+
+  // Parameters must be empty. The key is a 32-byte value wrapped in an extra
+  // OCTET STRING layer.
+  CBS inner;
+  if (CBS_len(params) != 0 ||
+      !CBS_get_asn1(key, &inner, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(key) != 0) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
+    return 0;
+  }
+
+  return x25519_set_priv_raw(out, CBS_data(&inner), CBS_len(&inner));
+}
+
+static int x25519_priv_encode(CBB *out, const EVP_PKEY *pkey) {
+  X25519_KEY *key = pkey->pkey.ptr;
+  if (!key->has_private) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NOT_A_PRIVATE_KEY);
+    return 0;
+  }
+
+  // See RFC 8410, section 7.
+  CBB pkcs8, algorithm, oid, private_key, inner;
+  if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
+      !CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, x25519_asn1_meth.oid, x25519_asn1_meth.oid_len) ||
+      !CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_asn1(&private_key, &inner, CBS_ASN1_OCTETSTRING) ||
+      // The PKCS#8 encoding stores only the 32-byte seed which is the first 32
+      // bytes of the private key.
+      !CBB_add_bytes(&inner, key->priv, 32) ||
+      !CBB_flush(out)) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int x25519_size(const EVP_PKEY *pkey) { return 32; }
+
+static int x25519_bits(const EVP_PKEY *pkey) { return 253; }
+
+const EVP_PKEY_ASN1_METHOD x25519_asn1_meth = {
+    EVP_PKEY_X25519,
+    {0x2b, 0x65, 0x6e},
+    3,
+    x25519_pub_decode,
+    x25519_pub_encode,
+    x25519_pub_cmp,
+    x25519_priv_decode,
+    x25519_priv_encode,
+    x25519_set_priv_raw,
+    x25519_set_pub_raw,
+    x25519_get_priv_raw,
+    x25519_get_pub_raw,
+    NULL /* pkey_opaque */,
+    x25519_size,
+    x25519_bits,
+    NULL /* param_missing */,
+    NULL /* param_copy */,
+    NULL /* param_cmp */,
+    x25519_free,
+};
+
+int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, const uint8_t *in,
+                                   size_t len) {
+  // TODO(davidben): In OpenSSL, this function also works for |EVP_PKEY_EC|
+  // keys. Add support if it ever comes up.
+  if (pkey->type != EVP_PKEY_X25519) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  return x25519_set_pub_raw(pkey, in, len);
+}
+
+size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey, uint8_t **out_ptr) {
+  // TODO(davidben): In OpenSSL, this function also works for |EVP_PKEY_EC|
+  // keys. Add support if it ever comes up.
+  if (pkey->type != EVP_PKEY_X25519) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  const X25519_KEY *key = pkey->pkey.ptr;
+  if (key == NULL) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
+    return 0;
+  }
+
+  *out_ptr = OPENSSL_memdup(key->pub, 32);
+  return *out_ptr == NULL ? 0 : 32;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c
new file mode 100644
index 0000000..19bcad4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c	
@@ -0,0 +1,146 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <string.h>
+
+#include <openssl_grpc/hmac.h>
+
+#include "../internal.h"
+
+
+int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
+                      const uint8_t *salt, size_t salt_len, unsigned iterations,
+                      const EVP_MD *digest, size_t key_len, uint8_t *out_key) {
+  // See RFC 8018, section 5.2.
+  int ret = 0;
+  size_t md_len = EVP_MD_size(digest);
+  uint32_t i = 1;
+  HMAC_CTX hctx;
+  HMAC_CTX_init(&hctx);
+
+  if (!HMAC_Init_ex(&hctx, password, password_len, digest, NULL)) {
+    goto err;
+  }
+
+  while (key_len > 0) {
+    size_t todo = md_len;
+    if (todo > key_len) {
+      todo = key_len;
+    }
+
+    uint8_t i_buf[4];
+    i_buf[0] = (uint8_t)((i >> 24) & 0xff);
+    i_buf[1] = (uint8_t)((i >> 16) & 0xff);
+    i_buf[2] = (uint8_t)((i >> 8) & 0xff);
+    i_buf[3] = (uint8_t)(i & 0xff);
+
+    // Compute U_1.
+    uint8_t digest_tmp[EVP_MAX_MD_SIZE];
+    if (!HMAC_Init_ex(&hctx, NULL, 0, NULL, NULL) ||
+        !HMAC_Update(&hctx, salt, salt_len) ||
+        !HMAC_Update(&hctx, i_buf, 4) ||
+        !HMAC_Final(&hctx, digest_tmp, NULL)) {
+      goto err;
+    }
+
+    OPENSSL_memcpy(out_key, digest_tmp, todo);
+    for (unsigned j = 1; j < iterations; j++) {
+      // Compute the remaining U_* values and XOR.
+      if (!HMAC_Init_ex(&hctx, NULL, 0, NULL, NULL) ||
+          !HMAC_Update(&hctx, digest_tmp, md_len) ||
+          !HMAC_Final(&hctx, digest_tmp, NULL)) {
+        goto err;
+      }
+      for (size_t k = 0; k < todo; k++) {
+        out_key[k] ^= digest_tmp[k];
+      }
+    }
+
+    key_len -= todo;
+    out_key += todo;
+    i++;
+  }
+
+  // RFC 8018 describes iterations (c) as being a "positive integer", so a
+  // value of 0 is an error.
+  //
+  // Unfortunately not all consumers of PKCS5_PBKDF2_HMAC() check their return
+  // value, expecting it to succeed and unconditionally using |out_key|.  As a
+  // precaution for such callsites in external code, the old behavior of
+  // iterations < 1 being treated as iterations == 1 is preserved, but
+  // additionally an error result is returned.
+  //
+  // TODO(eroman): Figure out how to remove this compatibility hack, or change
+  // the default to something more sensible like 2048.
+  if (iterations == 0) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  HMAC_CTX_cleanup(&hctx);
+  return ret;
+}
+
+int PKCS5_PBKDF2_HMAC_SHA1(const char *password, size_t password_len,
+                           const uint8_t *salt, size_t salt_len,
+                           unsigned iterations, size_t key_len,
+                           uint8_t *out_key) {
+  return PKCS5_PBKDF2_HMAC(password, password_len, salt, salt_len, iterations,
+                           EVP_sha1(), key_len, out_key);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c.grpc_back
new file mode 100644
index 0000000..f23a74b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/pbkdf.c.grpc_back	
@@ -0,0 +1,146 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <string.h>
+
+#include <openssl/hmac.h>
+
+#include "../internal.h"
+
+
+int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
+                      const uint8_t *salt, size_t salt_len, unsigned iterations,
+                      const EVP_MD *digest, size_t key_len, uint8_t *out_key) {
+  // See RFC 8018, section 5.2.
+  int ret = 0;
+  size_t md_len = EVP_MD_size(digest);
+  uint32_t i = 1;
+  HMAC_CTX hctx;
+  HMAC_CTX_init(&hctx);
+
+  if (!HMAC_Init_ex(&hctx, password, password_len, digest, NULL)) {
+    goto err;
+  }
+
+  while (key_len > 0) {
+    size_t todo = md_len;
+    if (todo > key_len) {
+      todo = key_len;
+    }
+
+    uint8_t i_buf[4];
+    i_buf[0] = (uint8_t)((i >> 24) & 0xff);
+    i_buf[1] = (uint8_t)((i >> 16) & 0xff);
+    i_buf[2] = (uint8_t)((i >> 8) & 0xff);
+    i_buf[3] = (uint8_t)(i & 0xff);
+
+    // Compute U_1.
+    uint8_t digest_tmp[EVP_MAX_MD_SIZE];
+    if (!HMAC_Init_ex(&hctx, NULL, 0, NULL, NULL) ||
+        !HMAC_Update(&hctx, salt, salt_len) ||
+        !HMAC_Update(&hctx, i_buf, 4) ||
+        !HMAC_Final(&hctx, digest_tmp, NULL)) {
+      goto err;
+    }
+
+    OPENSSL_memcpy(out_key, digest_tmp, todo);
+    for (unsigned j = 1; j < iterations; j++) {
+      // Compute the remaining U_* values and XOR.
+      if (!HMAC_Init_ex(&hctx, NULL, 0, NULL, NULL) ||
+          !HMAC_Update(&hctx, digest_tmp, md_len) ||
+          !HMAC_Final(&hctx, digest_tmp, NULL)) {
+        goto err;
+      }
+      for (size_t k = 0; k < todo; k++) {
+        out_key[k] ^= digest_tmp[k];
+      }
+    }
+
+    key_len -= todo;
+    out_key += todo;
+    i++;
+  }
+
+  // RFC 8018 describes iterations (c) as being a "positive integer", so a
+  // value of 0 is an error.
+  //
+  // Unfortunately not all consumers of PKCS5_PBKDF2_HMAC() check their return
+  // value, expecting it to succeed and unconditionally using |out_key|.  As a
+  // precaution for such callsites in external code, the old behavior of
+  // iterations < 1 being treated as iterations == 1 is preserved, but
+  // additionally an error result is returned.
+  //
+  // TODO(eroman): Figure out how to remove this compatibility hack, or change
+  // the default to something more sensible like 2048.
+  if (iterations == 0) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  HMAC_CTX_cleanup(&hctx);
+  return ret;
+}
+
+int PKCS5_PBKDF2_HMAC_SHA1(const char *password, size_t password_len,
+                           const uint8_t *salt, size_t salt_len,
+                           unsigned iterations, size_t key_len,
+                           uint8_t *out_key) {
+  return PKCS5_PBKDF2_HMAC(password, password_len, salt, salt_len, iterations,
+                           EVP_sha1(), key_len, out_key);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c
new file mode 100644
index 0000000..c60a020
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c	
@@ -0,0 +1,489 @@
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rsa.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rsa/internal.h"
+
+
+static int bn_print(BIO *bp, const char *number, const BIGNUM *num,
+                    uint8_t *buf, int off) {
+  if (num == NULL) {
+    return 1;
+  }
+
+  if (!BIO_indent(bp, off, 128)) {
+    return 0;
+  }
+  if (BN_is_zero(num)) {
+    if (BIO_printf(bp, "%s 0\n", number) <= 0) {
+      return 0;
+    }
+    return 1;
+  }
+
+  if (BN_num_bytes(num) <= sizeof(long)) {
+    const char *neg = BN_is_negative(num) ? "-" : "";
+    if (BIO_printf(bp, "%s %s%lu (%s0x%lx)\n", number, neg,
+                   (unsigned long)num->d[0], neg,
+                   (unsigned long)num->d[0]) <= 0) {
+      return 0;
+    }
+  } else {
+    buf[0] = 0;
+    if (BIO_printf(bp, "%s%s", number,
+                   (BN_is_negative(num)) ? " (Negative)" : "") <= 0) {
+      return 0;
+    }
+    int n = BN_bn2bin(num, &buf[1]);
+
+    if (buf[1] & 0x80) {
+      n++;
+    } else {
+      buf++;
+    }
+
+    int i;
+    for (i = 0; i < n; i++) {
+      if ((i % 15) == 0) {
+        if (BIO_puts(bp, "\n") <= 0 ||
+            !BIO_indent(bp, off + 4, 128)) {
+          return 0;
+        }
+      }
+      if (BIO_printf(bp, "%02x%s", buf[i], ((i + 1) == n) ? "" : ":") <= 0) {
+        return 0;
+      }
+    }
+    if (BIO_write(bp, "\n", 1) <= 0) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+static void update_buflen(const BIGNUM *b, size_t *pbuflen) {
+  if (!b) {
+    return;
+  }
+
+  size_t len = BN_num_bytes(b);
+  if (*pbuflen < len) {
+    *pbuflen = len;
+  }
+}
+
+// RSA keys.
+
+static int do_rsa_print(BIO *out, const RSA *rsa, int off,
+                        int include_private) {
+  const char *s, *str;
+  uint8_t *m = NULL;
+  int ret = 0, mod_len = 0;
+  size_t buf_len = 0;
+
+  update_buflen(rsa->n, &buf_len);
+  update_buflen(rsa->e, &buf_len);
+
+  if (include_private) {
+    update_buflen(rsa->d, &buf_len);
+    update_buflen(rsa->p, &buf_len);
+    update_buflen(rsa->q, &buf_len);
+    update_buflen(rsa->dmp1, &buf_len);
+    update_buflen(rsa->dmq1, &buf_len);
+    update_buflen(rsa->iqmp, &buf_len);
+  }
+
+  m = (uint8_t *)OPENSSL_malloc(buf_len + 10);
+  if (m == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (rsa->n != NULL) {
+    mod_len = BN_num_bits(rsa->n);
+  }
+
+  if (!BIO_indent(out, off, 128)) {
+    goto err;
+  }
+
+  if (include_private && rsa->d) {
+    if (BIO_printf(out, "Private-Key: (%d bit)\n", mod_len) <= 0) {
+      goto err;
+    }
+    str = "modulus:";
+    s = "publicExponent:";
+  } else {
+    if (BIO_printf(out, "Public-Key: (%d bit)\n", mod_len) <= 0) {
+      goto err;
+    }
+    str = "Modulus:";
+    s = "Exponent:";
+  }
+  if (!bn_print(out, str, rsa->n, m, off) ||
+      !bn_print(out, s, rsa->e, m, off)) {
+    goto err;
+  }
+
+  if (include_private) {
+    if (!bn_print(out, "privateExponent:", rsa->d, m, off) ||
+        !bn_print(out, "prime1:", rsa->p, m, off) ||
+        !bn_print(out, "prime2:", rsa->q, m, off) ||
+        !bn_print(out, "exponent1:", rsa->dmp1, m, off) ||
+        !bn_print(out, "exponent2:", rsa->dmq1, m, off) ||
+        !bn_print(out, "coefficient:", rsa->iqmp, m, off)) {
+      goto err;
+    }
+  }
+  ret = 1;
+
+err:
+  OPENSSL_free(m);
+  return ret;
+}
+
+static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                         ASN1_PCTX *ctx) {
+  return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
+}
+
+static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *ctx) {
+  return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
+}
+
+
+// DSA keys.
+
+static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype) {
+  uint8_t *m = NULL;
+  int ret = 0;
+  size_t buf_len = 0;
+  const char *ktype = NULL;
+
+  const BIGNUM *priv_key, *pub_key;
+
+  priv_key = NULL;
+  if (ptype == 2) {
+    priv_key = x->priv_key;
+  }
+
+  pub_key = NULL;
+  if (ptype > 0) {
+    pub_key = x->pub_key;
+  }
+
+  ktype = "DSA-Parameters";
+  if (ptype == 2) {
+    ktype = "Private-Key";
+  } else if (ptype == 1) {
+    ktype = "Public-Key";
+  }
+
+  update_buflen(x->p, &buf_len);
+  update_buflen(x->q, &buf_len);
+  update_buflen(x->g, &buf_len);
+  update_buflen(priv_key, &buf_len);
+  update_buflen(pub_key, &buf_len);
+
+  m = (uint8_t *)OPENSSL_malloc(buf_len + 10);
+  if (m == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (priv_key) {
+    if (!BIO_indent(bp, off, 128) ||
+        BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) <= 0) {
+      goto err;
+    }
+  }
+
+  if (!bn_print(bp, "priv:", priv_key, m, off) ||
+      !bn_print(bp, "pub: ", pub_key, m, off) ||
+      !bn_print(bp, "P:   ", x->p, m, off) ||
+      !bn_print(bp, "Q:   ", x->q, m, off) ||
+      !bn_print(bp, "G:   ", x->g, m, off)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  OPENSSL_free(m);
+  return ret;
+}
+
+static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
+}
+
+static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                         ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
+}
+
+static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
+}
+
+
+// EC keys.
+
+static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype) {
+  uint8_t *buffer = NULL;
+  const char *ecstr;
+  size_t buf_len = 0, i;
+  int ret = 0, reason = ERR_R_BIO_LIB;
+  BIGNUM *order = NULL;
+  BN_CTX *ctx = NULL;
+  const EC_GROUP *group;
+  const EC_POINT *public_key;
+  const BIGNUM *priv_key;
+  uint8_t *pub_key_bytes = NULL;
+  size_t pub_key_bytes_len = 0;
+
+  if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
+    reason = ERR_R_PASSED_NULL_PARAMETER;
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    reason = ERR_R_MALLOC_FAILURE;
+    goto err;
+  }
+
+  if (ktype > 0) {
+    public_key = EC_KEY_get0_public_key(x);
+    if (public_key != NULL) {
+      pub_key_bytes_len = EC_POINT_point2oct(
+          group, public_key, EC_KEY_get_conv_form(x), NULL, 0, ctx);
+      if (pub_key_bytes_len == 0) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      pub_key_bytes = OPENSSL_malloc(pub_key_bytes_len);
+      if (pub_key_bytes == NULL) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      pub_key_bytes_len =
+          EC_POINT_point2oct(group, public_key, EC_KEY_get_conv_form(x),
+                             pub_key_bytes, pub_key_bytes_len, ctx);
+      if (pub_key_bytes_len == 0) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      buf_len = pub_key_bytes_len;
+    }
+  }
+
+  if (ktype == 2) {
+    priv_key = EC_KEY_get0_private_key(x);
+    if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len) {
+      buf_len = i;
+    }
+  } else {
+    priv_key = NULL;
+  }
+
+  if (ktype > 0) {
+    buf_len += 10;
+    if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
+      reason = ERR_R_MALLOC_FAILURE;
+      goto err;
+    }
+  }
+  if (ktype == 2) {
+    ecstr = "Private-Key";
+  } else if (ktype == 1) {
+    ecstr = "Public-Key";
+  } else {
+    ecstr = "ECDSA-Parameters";
+  }
+
+  if (!BIO_indent(bp, off, 128)) {
+    goto err;
+  }
+  order = BN_new();
+  if (order == NULL || !EC_GROUP_get_order(group, order, NULL) ||
+      BIO_printf(bp, "%s: (%d bit)\n", ecstr, BN_num_bits(order)) <= 0) {
+    goto err;
+  }
+
+  if ((priv_key != NULL) &&
+      !bn_print(bp, "priv:", priv_key, buffer, off)) {
+    goto err;
+  }
+  if (pub_key_bytes != NULL) {
+    BIO_hexdump(bp, pub_key_bytes, pub_key_bytes_len, off);
+  }
+  // TODO(fork): implement
+  /*
+  if (!ECPKParameters_print(bp, group, off))
+    goto err; */
+  ret = 1;
+
+err:
+  if (!ret) {
+    OPENSSL_PUT_ERROR(EVP, reason);
+  }
+  OPENSSL_free(pub_key_bytes);
+  BN_free(order);
+  BN_CTX_free(ctx);
+  OPENSSL_free(buffer);
+  return ret;
+}
+
+static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                             ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
+}
+
+static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
+}
+
+
+static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                            ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
+}
+
+
+typedef struct {
+  int type;
+  int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx);
+  int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
+                    ASN1_PCTX *pctx);
+  int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
+                     ASN1_PCTX *pctx);
+} EVP_PKEY_PRINT_METHOD;
+
+static EVP_PKEY_PRINT_METHOD kPrintMethods[] = {
+    {
+        EVP_PKEY_RSA,
+        rsa_pub_print,
+        rsa_priv_print,
+        NULL /* param_print */,
+    },
+    {
+        EVP_PKEY_DSA,
+        dsa_pub_print,
+        dsa_priv_print,
+        dsa_param_print,
+    },
+    {
+        EVP_PKEY_EC,
+        eckey_pub_print,
+        eckey_priv_print,
+        eckey_param_print,
+    },
+};
+
+static size_t kPrintMethodsLen = OPENSSL_ARRAY_SIZE(kPrintMethods);
+
+static EVP_PKEY_PRINT_METHOD *find_method(int type) {
+  for (size_t i = 0; i < kPrintMethodsLen; i++) {
+    if (kPrintMethods[i].type == type) {
+      return &kPrintMethods[i];
+    }
+  }
+  return NULL;
+}
+
+static int print_unsupported(BIO *out, const EVP_PKEY *pkey, int indent,
+                             const char *kstr) {
+  BIO_indent(out, indent, 128);
+  BIO_printf(out, "%s algorithm unsupported\n", kstr);
+  return 1;
+}
+
+int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->pub_print != NULL) {
+    return method->pub_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Public Key");
+}
+
+int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->priv_print != NULL) {
+    return method->priv_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Private Key");
+}
+
+int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->param_print != NULL) {
+    return method->param_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Parameters");
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c.grpc_back
new file mode 100644
index 0000000..3621d5f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/print.c.grpc_back	
@@ -0,0 +1,489 @@
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/evp.h>
+
+#include <openssl/bio.h>
+#include <openssl/bn.h>
+#include <openssl/dsa.h>
+#include <openssl/ec.h>
+#include <openssl/ec_key.h>
+#include <openssl/mem.h>
+#include <openssl/rsa.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rsa/internal.h"
+
+
+static int bn_print(BIO *bp, const char *number, const BIGNUM *num,
+                    uint8_t *buf, int off) {
+  if (num == NULL) {
+    return 1;
+  }
+
+  if (!BIO_indent(bp, off, 128)) {
+    return 0;
+  }
+  if (BN_is_zero(num)) {
+    if (BIO_printf(bp, "%s 0\n", number) <= 0) {
+      return 0;
+    }
+    return 1;
+  }
+
+  if (BN_num_bytes(num) <= sizeof(long)) {
+    const char *neg = BN_is_negative(num) ? "-" : "";
+    if (BIO_printf(bp, "%s %s%lu (%s0x%lx)\n", number, neg,
+                   (unsigned long)num->d[0], neg,
+                   (unsigned long)num->d[0]) <= 0) {
+      return 0;
+    }
+  } else {
+    buf[0] = 0;
+    if (BIO_printf(bp, "%s%s", number,
+                   (BN_is_negative(num)) ? " (Negative)" : "") <= 0) {
+      return 0;
+    }
+    int n = BN_bn2bin(num, &buf[1]);
+
+    if (buf[1] & 0x80) {
+      n++;
+    } else {
+      buf++;
+    }
+
+    int i;
+    for (i = 0; i < n; i++) {
+      if ((i % 15) == 0) {
+        if (BIO_puts(bp, "\n") <= 0 ||
+            !BIO_indent(bp, off + 4, 128)) {
+          return 0;
+        }
+      }
+      if (BIO_printf(bp, "%02x%s", buf[i], ((i + 1) == n) ? "" : ":") <= 0) {
+        return 0;
+      }
+    }
+    if (BIO_write(bp, "\n", 1) <= 0) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+static void update_buflen(const BIGNUM *b, size_t *pbuflen) {
+  if (!b) {
+    return;
+  }
+
+  size_t len = BN_num_bytes(b);
+  if (*pbuflen < len) {
+    *pbuflen = len;
+  }
+}
+
+// RSA keys.
+
+static int do_rsa_print(BIO *out, const RSA *rsa, int off,
+                        int include_private) {
+  const char *s, *str;
+  uint8_t *m = NULL;
+  int ret = 0, mod_len = 0;
+  size_t buf_len = 0;
+
+  update_buflen(rsa->n, &buf_len);
+  update_buflen(rsa->e, &buf_len);
+
+  if (include_private) {
+    update_buflen(rsa->d, &buf_len);
+    update_buflen(rsa->p, &buf_len);
+    update_buflen(rsa->q, &buf_len);
+    update_buflen(rsa->dmp1, &buf_len);
+    update_buflen(rsa->dmq1, &buf_len);
+    update_buflen(rsa->iqmp, &buf_len);
+  }
+
+  m = (uint8_t *)OPENSSL_malloc(buf_len + 10);
+  if (m == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (rsa->n != NULL) {
+    mod_len = BN_num_bits(rsa->n);
+  }
+
+  if (!BIO_indent(out, off, 128)) {
+    goto err;
+  }
+
+  if (include_private && rsa->d) {
+    if (BIO_printf(out, "Private-Key: (%d bit)\n", mod_len) <= 0) {
+      goto err;
+    }
+    str = "modulus:";
+    s = "publicExponent:";
+  } else {
+    if (BIO_printf(out, "Public-Key: (%d bit)\n", mod_len) <= 0) {
+      goto err;
+    }
+    str = "Modulus:";
+    s = "Exponent:";
+  }
+  if (!bn_print(out, str, rsa->n, m, off) ||
+      !bn_print(out, s, rsa->e, m, off)) {
+    goto err;
+  }
+
+  if (include_private) {
+    if (!bn_print(out, "privateExponent:", rsa->d, m, off) ||
+        !bn_print(out, "prime1:", rsa->p, m, off) ||
+        !bn_print(out, "prime2:", rsa->q, m, off) ||
+        !bn_print(out, "exponent1:", rsa->dmp1, m, off) ||
+        !bn_print(out, "exponent2:", rsa->dmq1, m, off) ||
+        !bn_print(out, "coefficient:", rsa->iqmp, m, off)) {
+      goto err;
+    }
+  }
+  ret = 1;
+
+err:
+  OPENSSL_free(m);
+  return ret;
+}
+
+static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                         ASN1_PCTX *ctx) {
+  return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
+}
+
+static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *ctx) {
+  return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
+}
+
+
+// DSA keys.
+
+static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype) {
+  uint8_t *m = NULL;
+  int ret = 0;
+  size_t buf_len = 0;
+  const char *ktype = NULL;
+
+  const BIGNUM *priv_key, *pub_key;
+
+  priv_key = NULL;
+  if (ptype == 2) {
+    priv_key = x->priv_key;
+  }
+
+  pub_key = NULL;
+  if (ptype > 0) {
+    pub_key = x->pub_key;
+  }
+
+  ktype = "DSA-Parameters";
+  if (ptype == 2) {
+    ktype = "Private-Key";
+  } else if (ptype == 1) {
+    ktype = "Public-Key";
+  }
+
+  update_buflen(x->p, &buf_len);
+  update_buflen(x->q, &buf_len);
+  update_buflen(x->g, &buf_len);
+  update_buflen(priv_key, &buf_len);
+  update_buflen(pub_key, &buf_len);
+
+  m = (uint8_t *)OPENSSL_malloc(buf_len + 10);
+  if (m == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (priv_key) {
+    if (!BIO_indent(bp, off, 128) ||
+        BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) <= 0) {
+      goto err;
+    }
+  }
+
+  if (!bn_print(bp, "priv:", priv_key, m, off) ||
+      !bn_print(bp, "pub: ", pub_key, m, off) ||
+      !bn_print(bp, "P:   ", x->p, m, off) ||
+      !bn_print(bp, "Q:   ", x->q, m, off) ||
+      !bn_print(bp, "G:   ", x->g, m, off)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  OPENSSL_free(m);
+  return ret;
+}
+
+static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
+}
+
+static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                         ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
+}
+
+static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *ctx) {
+  return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
+}
+
+
+// EC keys.
+
+static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype) {
+  uint8_t *buffer = NULL;
+  const char *ecstr;
+  size_t buf_len = 0, i;
+  int ret = 0, reason = ERR_R_BIO_LIB;
+  BIGNUM *order = NULL;
+  BN_CTX *ctx = NULL;
+  const EC_GROUP *group;
+  const EC_POINT *public_key;
+  const BIGNUM *priv_key;
+  uint8_t *pub_key_bytes = NULL;
+  size_t pub_key_bytes_len = 0;
+
+  if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
+    reason = ERR_R_PASSED_NULL_PARAMETER;
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    reason = ERR_R_MALLOC_FAILURE;
+    goto err;
+  }
+
+  if (ktype > 0) {
+    public_key = EC_KEY_get0_public_key(x);
+    if (public_key != NULL) {
+      pub_key_bytes_len = EC_POINT_point2oct(
+          group, public_key, EC_KEY_get_conv_form(x), NULL, 0, ctx);
+      if (pub_key_bytes_len == 0) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      pub_key_bytes = OPENSSL_malloc(pub_key_bytes_len);
+      if (pub_key_bytes == NULL) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      pub_key_bytes_len =
+          EC_POINT_point2oct(group, public_key, EC_KEY_get_conv_form(x),
+                             pub_key_bytes, pub_key_bytes_len, ctx);
+      if (pub_key_bytes_len == 0) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+      }
+      buf_len = pub_key_bytes_len;
+    }
+  }
+
+  if (ktype == 2) {
+    priv_key = EC_KEY_get0_private_key(x);
+    if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len) {
+      buf_len = i;
+    }
+  } else {
+    priv_key = NULL;
+  }
+
+  if (ktype > 0) {
+    buf_len += 10;
+    if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
+      reason = ERR_R_MALLOC_FAILURE;
+      goto err;
+    }
+  }
+  if (ktype == 2) {
+    ecstr = "Private-Key";
+  } else if (ktype == 1) {
+    ecstr = "Public-Key";
+  } else {
+    ecstr = "ECDSA-Parameters";
+  }
+
+  if (!BIO_indent(bp, off, 128)) {
+    goto err;
+  }
+  order = BN_new();
+  if (order == NULL || !EC_GROUP_get_order(group, order, NULL) ||
+      BIO_printf(bp, "%s: (%d bit)\n", ecstr, BN_num_bits(order)) <= 0) {
+    goto err;
+  }
+
+  if ((priv_key != NULL) &&
+      !bn_print(bp, "priv:", priv_key, buffer, off)) {
+    goto err;
+  }
+  if (pub_key_bytes != NULL) {
+    BIO_hexdump(bp, pub_key_bytes, pub_key_bytes_len, off);
+  }
+  // TODO(fork): implement
+  /*
+  if (!ECPKParameters_print(bp, group, off))
+    goto err; */
+  ret = 1;
+
+err:
+  if (!ret) {
+    OPENSSL_PUT_ERROR(EVP, reason);
+  }
+  OPENSSL_free(pub_key_bytes);
+  BN_free(order);
+  BN_CTX_free(ctx);
+  OPENSSL_free(buffer);
+  return ret;
+}
+
+static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                             ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
+}
+
+static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
+}
+
+
+static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
+                            ASN1_PCTX *ctx) {
+  return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
+}
+
+
+typedef struct {
+  int type;
+  int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx);
+  int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
+                    ASN1_PCTX *pctx);
+  int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
+                     ASN1_PCTX *pctx);
+} EVP_PKEY_PRINT_METHOD;
+
+static EVP_PKEY_PRINT_METHOD kPrintMethods[] = {
+    {
+        EVP_PKEY_RSA,
+        rsa_pub_print,
+        rsa_priv_print,
+        NULL /* param_print */,
+    },
+    {
+        EVP_PKEY_DSA,
+        dsa_pub_print,
+        dsa_priv_print,
+        dsa_param_print,
+    },
+    {
+        EVP_PKEY_EC,
+        eckey_pub_print,
+        eckey_priv_print,
+        eckey_param_print,
+    },
+};
+
+static size_t kPrintMethodsLen = OPENSSL_ARRAY_SIZE(kPrintMethods);
+
+static EVP_PKEY_PRINT_METHOD *find_method(int type) {
+  for (size_t i = 0; i < kPrintMethodsLen; i++) {
+    if (kPrintMethods[i].type == type) {
+      return &kPrintMethods[i];
+    }
+  }
+  return NULL;
+}
+
+static int print_unsupported(BIO *out, const EVP_PKEY *pkey, int indent,
+                             const char *kstr) {
+  BIO_indent(out, indent, 128);
+  BIO_printf(out, "%s algorithm unsupported\n", kstr);
+  return 1;
+}
+
+int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->pub_print != NULL) {
+    return method->pub_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Public Key");
+}
+
+int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
+                           ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->priv_print != NULL) {
+    return method->priv_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Private Key");
+}
+
+int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
+                          ASN1_PCTX *pctx) {
+  EVP_PKEY_PRINT_METHOD *method = find_method(pkey->type);
+  if (method != NULL && method->param_print != NULL) {
+    return method->param_print(out, pkey, indent, pctx);
+  }
+  return print_unsupported(out, pkey, indent, "Parameters");
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c
new file mode 100644
index 0000000..82ed1f9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c	
@@ -0,0 +1,213 @@
+/*
+ * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl_grpc/evp.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+#include "../internal.h"
+
+
+// This file implements scrypt, described in RFC 7914.
+//
+// Note scrypt refers to both "blocks" and a "block size" parameter, r. These
+// are two different notions of blocks. A Salsa20 block is 64 bytes long,
+// represented in this implementation by 16 |uint32_t|s. |r| determines the
+// number of 64-byte Salsa20 blocks in a scryptBlockMix block, which is 2 * |r|
+// Salsa20 blocks. This implementation refers to them as Salsa20 blocks and
+// scrypt blocks, respectively.
+
+// A block_t is a Salsa20 block.
+typedef struct { uint32_t words[16]; } block_t;
+
+OPENSSL_STATIC_ASSERT(sizeof(block_t) == 64, "block_t has padding");
+
+#define R(a, b) (((a) << (b)) | ((a) >> (32 - (b))))
+
+// salsa208_word_specification implements the Salsa20/8 core function, also
+// described in RFC 7914, section 3. It modifies the block at |inout|
+// in-place.
+static void salsa208_word_specification(block_t *inout) {
+  block_t x;
+  OPENSSL_memcpy(&x, inout, sizeof(x));
+
+  for (int i = 8; i > 0; i -= 2) {
+    x.words[4] ^= R(x.words[0] + x.words[12], 7);
+    x.words[8] ^= R(x.words[4] + x.words[0], 9);
+    x.words[12] ^= R(x.words[8] + x.words[4], 13);
+    x.words[0] ^= R(x.words[12] + x.words[8], 18);
+    x.words[9] ^= R(x.words[5] + x.words[1], 7);
+    x.words[13] ^= R(x.words[9] + x.words[5], 9);
+    x.words[1] ^= R(x.words[13] + x.words[9], 13);
+    x.words[5] ^= R(x.words[1] + x.words[13], 18);
+    x.words[14] ^= R(x.words[10] + x.words[6], 7);
+    x.words[2] ^= R(x.words[14] + x.words[10], 9);
+    x.words[6] ^= R(x.words[2] + x.words[14], 13);
+    x.words[10] ^= R(x.words[6] + x.words[2], 18);
+    x.words[3] ^= R(x.words[15] + x.words[11], 7);
+    x.words[7] ^= R(x.words[3] + x.words[15], 9);
+    x.words[11] ^= R(x.words[7] + x.words[3], 13);
+    x.words[15] ^= R(x.words[11] + x.words[7], 18);
+    x.words[1] ^= R(x.words[0] + x.words[3], 7);
+    x.words[2] ^= R(x.words[1] + x.words[0], 9);
+    x.words[3] ^= R(x.words[2] + x.words[1], 13);
+    x.words[0] ^= R(x.words[3] + x.words[2], 18);
+    x.words[6] ^= R(x.words[5] + x.words[4], 7);
+    x.words[7] ^= R(x.words[6] + x.words[5], 9);
+    x.words[4] ^= R(x.words[7] + x.words[6], 13);
+    x.words[5] ^= R(x.words[4] + x.words[7], 18);
+    x.words[11] ^= R(x.words[10] + x.words[9], 7);
+    x.words[8] ^= R(x.words[11] + x.words[10], 9);
+    x.words[9] ^= R(x.words[8] + x.words[11], 13);
+    x.words[10] ^= R(x.words[9] + x.words[8], 18);
+    x.words[12] ^= R(x.words[15] + x.words[14], 7);
+    x.words[13] ^= R(x.words[12] + x.words[15], 9);
+    x.words[14] ^= R(x.words[13] + x.words[12], 13);
+    x.words[15] ^= R(x.words[14] + x.words[13], 18);
+  }
+
+  for (int i = 0; i < 16; ++i) {
+    inout->words[i] += x.words[i];
+  }
+}
+
+// xor_block sets |*out| to be |*a| XOR |*b|.
+static void xor_block(block_t *out, const block_t *a, const block_t *b) {
+  for (size_t i = 0; i < 16; i++) {
+    out->words[i] = a->words[i] ^ b->words[i];
+  }
+}
+
+// scryptBlockMix implements the function described in RFC 7914, section 4. B'
+// is written to |out|. |out| and |B| may not alias and must be each one scrypt
+// block (2 * |r| Salsa20 blocks) long.
+static void scryptBlockMix(block_t *out, const block_t *B, uint64_t r) {
+  assert(out != B);
+
+  block_t X;
+  OPENSSL_memcpy(&X, &B[r * 2 - 1], sizeof(X));
+  for (uint64_t i = 0; i < r * 2; i++) {
+    xor_block(&X, &X, &B[i]);
+    salsa208_word_specification(&X);
+
+    // This implements the permutation in step 3.
+    OPENSSL_memcpy(&out[i / 2 + (i & 1) * r], &X, sizeof(X));
+  }
+}
+
+// scryptROMix implements the function described in RFC 7914, section 5.  |B| is
+// an scrypt block (2 * |r| Salsa20 blocks) and is modified in-place. |T| and
+// |V| are scratch space allocated by the caller. |T| must have space for one
+// scrypt block (2 * |r| Salsa20 blocks). |V| must have space for |N| scrypt
+// blocks (2 * |r| * |N| Salsa20 blocks).
+static void scryptROMix(block_t *B, uint64_t r, uint64_t N, block_t *T,
+                        block_t *V) {
+  // Steps 1 and 2.
+  OPENSSL_memcpy(V, B, 2 * r * sizeof(block_t));
+  for (uint64_t i = 1; i < N; i++) {
+    scryptBlockMix(&V[2 * r * i /* scrypt block i */],
+                   &V[2 * r * (i - 1) /* scrypt block i-1 */], r);
+  }
+  scryptBlockMix(B, &V[2 * r * (N - 1) /* scrypt block N-1 */], r);
+
+  // Step 3.
+  for (uint64_t i = 0; i < N; i++) {
+    // Note this assumes |N| <= 2^32 and is a power of 2.
+    uint32_t j = B[2 * r - 1].words[0] & (N - 1);
+    for (size_t k = 0; k < 2 * r; k++) {
+      xor_block(&T[k], &B[k], &V[2 * r * j + k]);
+    }
+    scryptBlockMix(B, T, r);
+  }
+}
+
+// SCRYPT_PR_MAX is the maximum value of p * r. This is equivalent to the
+// bounds on p in section 6:
+//
+//   p <= ((2^32-1) * hLen) / MFLen iff
+//   p <= ((2^32-1) * 32) / (128 * r) iff
+//   p * r <= (2^30-1)
+#define SCRYPT_PR_MAX ((1 << 30) - 1)
+
+// SCRYPT_MAX_MEM is the default maximum memory that may be allocated by
+// |EVP_PBE_scrypt|.
+#define SCRYPT_MAX_MEM (1024 * 1024 * 32)
+
+int EVP_PBE_scrypt(const char *password, size_t password_len,
+                   const uint8_t *salt, size_t salt_len, uint64_t N, uint64_t r,
+                   uint64_t p, size_t max_mem, uint8_t *out_key,
+                   size_t key_len) {
+  if (r == 0 || p == 0 || p > SCRYPT_PR_MAX / r ||
+      // |N| must be a power of two.
+      N < 2 || (N & (N - 1)) ||
+      // We only support |N| <= 2^32 in |scryptROMix|.
+      N > UINT64_C(1) << 32 ||
+      // Check that |N| < 2^(128×r / 8).
+      (16 * r <= 63 && N >= UINT64_C(1) << (16 * r))) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PARAMETERS);
+    return 0;
+  }
+
+  // Determine the amount of memory needed. B, T, and V are |p|, 1, and |N|
+  // scrypt blocks, respectively. Each scrypt block is 2*|r| |block_t|s.
+  if (max_mem == 0) {
+    max_mem = SCRYPT_MAX_MEM;
+  }
+
+  size_t max_scrypt_blocks = max_mem / (2 * r * sizeof(block_t));
+  if (max_scrypt_blocks < p + 1 ||
+      max_scrypt_blocks - p - 1 < N) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MEMORY_LIMIT_EXCEEDED);
+    return 0;
+  }
+
+  // Allocate and divide up the scratch space. |max_mem| fits in a size_t, which
+  // is no bigger than uint64_t, so none of these operations may overflow.
+  OPENSSL_STATIC_ASSERT(UINT64_MAX >= ((size_t)-1), "size_t exceeds uint64_t");
+  size_t B_blocks = p * 2 * r;
+  size_t B_bytes = B_blocks * sizeof(block_t);
+  size_t T_blocks = 2 * r;
+  size_t V_blocks = N * 2 * r;
+  block_t *B = OPENSSL_malloc((B_blocks + T_blocks + V_blocks) * sizeof(block_t));
+  if (B == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  block_t *T = B + B_blocks;
+  block_t *V = T + T_blocks;
+
+  // NOTE: PKCS5_PBKDF2_HMAC can only fail due to allocation failure
+  // or |iterations| of 0 (we pass 1 here). This is consistent with
+  // the documented failure conditions of EVP_PBE_scrypt.
+  if (!PKCS5_PBKDF2_HMAC(password, password_len, salt, salt_len, 1,
+                         EVP_sha256(), B_bytes, (uint8_t *)B)) {
+    goto err;
+  }
+
+  for (uint64_t i = 0; i < p; i++) {
+    scryptROMix(B + 2 * r * i, r, N, T, V);
+  }
+
+  if (!PKCS5_PBKDF2_HMAC(password, password_len, (const uint8_t *)B, B_bytes, 1,
+                         EVP_sha256(), key_len, out_key)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(B);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c.grpc_back
new file mode 100644
index 0000000..2feb650
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/scrypt.c.grpc_back	
@@ -0,0 +1,213 @@
+/*
+ * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/evp.h>
+
+#include <assert.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+#include "../internal.h"
+
+
+// This file implements scrypt, described in RFC 7914.
+//
+// Note scrypt refers to both "blocks" and a "block size" parameter, r. These
+// are two different notions of blocks. A Salsa20 block is 64 bytes long,
+// represented in this implementation by 16 |uint32_t|s. |r| determines the
+// number of 64-byte Salsa20 blocks in a scryptBlockMix block, which is 2 * |r|
+// Salsa20 blocks. This implementation refers to them as Salsa20 blocks and
+// scrypt blocks, respectively.
+
+// A block_t is a Salsa20 block.
+typedef struct { uint32_t words[16]; } block_t;
+
+OPENSSL_STATIC_ASSERT(sizeof(block_t) == 64, "block_t has padding");
+
+#define R(a, b) (((a) << (b)) | ((a) >> (32 - (b))))
+
+// salsa208_word_specification implements the Salsa20/8 core function, also
+// described in RFC 7914, section 3. It modifies the block at |inout|
+// in-place.
+static void salsa208_word_specification(block_t *inout) {
+  block_t x;
+  OPENSSL_memcpy(&x, inout, sizeof(x));
+
+  for (int i = 8; i > 0; i -= 2) {
+    x.words[4] ^= R(x.words[0] + x.words[12], 7);
+    x.words[8] ^= R(x.words[4] + x.words[0], 9);
+    x.words[12] ^= R(x.words[8] + x.words[4], 13);
+    x.words[0] ^= R(x.words[12] + x.words[8], 18);
+    x.words[9] ^= R(x.words[5] + x.words[1], 7);
+    x.words[13] ^= R(x.words[9] + x.words[5], 9);
+    x.words[1] ^= R(x.words[13] + x.words[9], 13);
+    x.words[5] ^= R(x.words[1] + x.words[13], 18);
+    x.words[14] ^= R(x.words[10] + x.words[6], 7);
+    x.words[2] ^= R(x.words[14] + x.words[10], 9);
+    x.words[6] ^= R(x.words[2] + x.words[14], 13);
+    x.words[10] ^= R(x.words[6] + x.words[2], 18);
+    x.words[3] ^= R(x.words[15] + x.words[11], 7);
+    x.words[7] ^= R(x.words[3] + x.words[15], 9);
+    x.words[11] ^= R(x.words[7] + x.words[3], 13);
+    x.words[15] ^= R(x.words[11] + x.words[7], 18);
+    x.words[1] ^= R(x.words[0] + x.words[3], 7);
+    x.words[2] ^= R(x.words[1] + x.words[0], 9);
+    x.words[3] ^= R(x.words[2] + x.words[1], 13);
+    x.words[0] ^= R(x.words[3] + x.words[2], 18);
+    x.words[6] ^= R(x.words[5] + x.words[4], 7);
+    x.words[7] ^= R(x.words[6] + x.words[5], 9);
+    x.words[4] ^= R(x.words[7] + x.words[6], 13);
+    x.words[5] ^= R(x.words[4] + x.words[7], 18);
+    x.words[11] ^= R(x.words[10] + x.words[9], 7);
+    x.words[8] ^= R(x.words[11] + x.words[10], 9);
+    x.words[9] ^= R(x.words[8] + x.words[11], 13);
+    x.words[10] ^= R(x.words[9] + x.words[8], 18);
+    x.words[12] ^= R(x.words[15] + x.words[14], 7);
+    x.words[13] ^= R(x.words[12] + x.words[15], 9);
+    x.words[14] ^= R(x.words[13] + x.words[12], 13);
+    x.words[15] ^= R(x.words[14] + x.words[13], 18);
+  }
+
+  for (int i = 0; i < 16; ++i) {
+    inout->words[i] += x.words[i];
+  }
+}
+
+// xor_block sets |*out| to be |*a| XOR |*b|.
+static void xor_block(block_t *out, const block_t *a, const block_t *b) {
+  for (size_t i = 0; i < 16; i++) {
+    out->words[i] = a->words[i] ^ b->words[i];
+  }
+}
+
+// scryptBlockMix implements the function described in RFC 7914, section 4. B'
+// is written to |out|. |out| and |B| may not alias and must be each one scrypt
+// block (2 * |r| Salsa20 blocks) long.
+static void scryptBlockMix(block_t *out, const block_t *B, uint64_t r) {
+  assert(out != B);
+
+  block_t X;
+  OPENSSL_memcpy(&X, &B[r * 2 - 1], sizeof(X));
+  for (uint64_t i = 0; i < r * 2; i++) {
+    xor_block(&X, &X, &B[i]);
+    salsa208_word_specification(&X);
+
+    // This implements the permutation in step 3.
+    OPENSSL_memcpy(&out[i / 2 + (i & 1) * r], &X, sizeof(X));
+  }
+}
+
+// scryptROMix implements the function described in RFC 7914, section 5.  |B| is
+// an scrypt block (2 * |r| Salsa20 blocks) and is modified in-place. |T| and
+// |V| are scratch space allocated by the caller. |T| must have space for one
+// scrypt block (2 * |r| Salsa20 blocks). |V| must have space for |N| scrypt
+// blocks (2 * |r| * |N| Salsa20 blocks).
+static void scryptROMix(block_t *B, uint64_t r, uint64_t N, block_t *T,
+                        block_t *V) {
+  // Steps 1 and 2.
+  OPENSSL_memcpy(V, B, 2 * r * sizeof(block_t));
+  for (uint64_t i = 1; i < N; i++) {
+    scryptBlockMix(&V[2 * r * i /* scrypt block i */],
+                   &V[2 * r * (i - 1) /* scrypt block i-1 */], r);
+  }
+  scryptBlockMix(B, &V[2 * r * (N - 1) /* scrypt block N-1 */], r);
+
+  // Step 3.
+  for (uint64_t i = 0; i < N; i++) {
+    // Note this assumes |N| <= 2^32 and is a power of 2.
+    uint32_t j = B[2 * r - 1].words[0] & (N - 1);
+    for (size_t k = 0; k < 2 * r; k++) {
+      xor_block(&T[k], &B[k], &V[2 * r * j + k]);
+    }
+    scryptBlockMix(B, T, r);
+  }
+}
+
+// SCRYPT_PR_MAX is the maximum value of p * r. This is equivalent to the
+// bounds on p in section 6:
+//
+//   p <= ((2^32-1) * hLen) / MFLen iff
+//   p <= ((2^32-1) * 32) / (128 * r) iff
+//   p * r <= (2^30-1)
+#define SCRYPT_PR_MAX ((1 << 30) - 1)
+
+// SCRYPT_MAX_MEM is the default maximum memory that may be allocated by
+// |EVP_PBE_scrypt|.
+#define SCRYPT_MAX_MEM (1024 * 1024 * 32)
+
+int EVP_PBE_scrypt(const char *password, size_t password_len,
+                   const uint8_t *salt, size_t salt_len, uint64_t N, uint64_t r,
+                   uint64_t p, size_t max_mem, uint8_t *out_key,
+                   size_t key_len) {
+  if (r == 0 || p == 0 || p > SCRYPT_PR_MAX / r ||
+      // |N| must be a power of two.
+      N < 2 || (N & (N - 1)) ||
+      // We only support |N| <= 2^32 in |scryptROMix|.
+      N > UINT64_C(1) << 32 ||
+      // Check that |N| < 2^(128×r / 8).
+      (16 * r <= 63 && N >= UINT64_C(1) << (16 * r))) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PARAMETERS);
+    return 0;
+  }
+
+  // Determine the amount of memory needed. B, T, and V are |p|, 1, and |N|
+  // scrypt blocks, respectively. Each scrypt block is 2*|r| |block_t|s.
+  if (max_mem == 0) {
+    max_mem = SCRYPT_MAX_MEM;
+  }
+
+  size_t max_scrypt_blocks = max_mem / (2 * r * sizeof(block_t));
+  if (max_scrypt_blocks < p + 1 ||
+      max_scrypt_blocks - p - 1 < N) {
+    OPENSSL_PUT_ERROR(EVP, EVP_R_MEMORY_LIMIT_EXCEEDED);
+    return 0;
+  }
+
+  // Allocate and divide up the scratch space. |max_mem| fits in a size_t, which
+  // is no bigger than uint64_t, so none of these operations may overflow.
+  OPENSSL_STATIC_ASSERT(UINT64_MAX >= ((size_t)-1), "size_t exceeds uint64_t");
+  size_t B_blocks = p * 2 * r;
+  size_t B_bytes = B_blocks * sizeof(block_t);
+  size_t T_blocks = 2 * r;
+  size_t V_blocks = N * 2 * r;
+  block_t *B = OPENSSL_malloc((B_blocks + T_blocks + V_blocks) * sizeof(block_t));
+  if (B == NULL) {
+    OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  block_t *T = B + B_blocks;
+  block_t *V = T + T_blocks;
+
+  // NOTE: PKCS5_PBKDF2_HMAC can only fail due to allocation failure
+  // or |iterations| of 0 (we pass 1 here). This is consistent with
+  // the documented failure conditions of EVP_PBE_scrypt.
+  if (!PKCS5_PBKDF2_HMAC(password, password_len, salt, salt_len, 1,
+                         EVP_sha256(), B_bytes, (uint8_t *)B)) {
+    goto err;
+  }
+
+  for (uint64_t i = 0; i < p; i++) {
+    scryptROMix(B + 2 * r * i, r, N, T, V);
+  }
+
+  if (!PKCS5_PBKDF2_HMAC(password, password_len, (const uint8_t *)B, B_bytes, 1,
+                         EVP_sha256(), key_len, out_key)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(B);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c
new file mode 100644
index 0000000..046b50c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c	
@@ -0,0 +1,151 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/evp.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
+  return EVP_DigestInit_ex(ctx, type, impl);
+}
+
+int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  return EVP_DigestInit(ctx, type);
+}
+
+int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
+                  unsigned int *out_sig_len, EVP_PKEY *pkey) {
+  uint8_t m[EVP_MAX_MD_SIZE];
+  unsigned int m_len;
+  int ret = 0;
+  EVP_MD_CTX tmp_ctx;
+  EVP_PKEY_CTX *pkctx = NULL;
+  size_t sig_len = EVP_PKEY_size(pkey);
+
+  *out_sig_len = 0;
+  EVP_MD_CTX_init(&tmp_ctx);
+  if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
+      !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
+    goto out;
+  }
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+  if (!pkctx || !EVP_PKEY_sign_init(pkctx) ||
+      !EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) ||
+      !EVP_PKEY_sign(pkctx, sig, &sig_len, m, m_len)) {
+    goto out;
+  }
+  *out_sig_len = sig_len;
+  ret = 1;
+
+out:
+  if (pkctx) {
+    EVP_PKEY_CTX_free(pkctx);
+  }
+
+  return ret;
+}
+
+int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
+  return EVP_DigestInit_ex(ctx, type, impl);
+}
+
+int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  return EVP_DigestInit(ctx, type);
+}
+
+int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                    EVP_PKEY *pkey) {
+  uint8_t m[EVP_MAX_MD_SIZE];
+  unsigned int m_len;
+  int ret = 0;
+  EVP_MD_CTX tmp_ctx;
+  EVP_PKEY_CTX *pkctx = NULL;
+
+  EVP_MD_CTX_init(&tmp_ctx);
+  if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
+      !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
+    EVP_MD_CTX_cleanup(&tmp_ctx);
+    goto out;
+  }
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+  if (!pkctx ||
+      !EVP_PKEY_verify_init(pkctx) ||
+      !EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest)) {
+    goto out;
+  }
+  ret = EVP_PKEY_verify(pkctx, sig, sig_len, m, m_len);
+
+out:
+  EVP_PKEY_CTX_free(pkctx);
+  return ret;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c.grpc_back
new file mode 100644
index 0000000..ced86bd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/evp/sign.c.grpc_back	
@@ -0,0 +1,151 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/evp.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
+  return EVP_DigestInit_ex(ctx, type, impl);
+}
+
+int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  return EVP_DigestInit(ctx, type);
+}
+
+int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
+                  unsigned int *out_sig_len, EVP_PKEY *pkey) {
+  uint8_t m[EVP_MAX_MD_SIZE];
+  unsigned int m_len;
+  int ret = 0;
+  EVP_MD_CTX tmp_ctx;
+  EVP_PKEY_CTX *pkctx = NULL;
+  size_t sig_len = EVP_PKEY_size(pkey);
+
+  *out_sig_len = 0;
+  EVP_MD_CTX_init(&tmp_ctx);
+  if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
+      !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
+    goto out;
+  }
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+  if (!pkctx || !EVP_PKEY_sign_init(pkctx) ||
+      !EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) ||
+      !EVP_PKEY_sign(pkctx, sig, &sig_len, m, m_len)) {
+    goto out;
+  }
+  *out_sig_len = sig_len;
+  ret = 1;
+
+out:
+  if (pkctx) {
+    EVP_PKEY_CTX_free(pkctx);
+  }
+
+  return ret;
+}
+
+int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
+  return EVP_DigestInit_ex(ctx, type, impl);
+}
+
+int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  return EVP_DigestInit(ctx, type);
+}
+
+int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  return EVP_DigestUpdate(ctx, data, len);
+}
+
+int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig, size_t sig_len,
+                    EVP_PKEY *pkey) {
+  uint8_t m[EVP_MAX_MD_SIZE];
+  unsigned int m_len;
+  int ret = 0;
+  EVP_MD_CTX tmp_ctx;
+  EVP_PKEY_CTX *pkctx = NULL;
+
+  EVP_MD_CTX_init(&tmp_ctx);
+  if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
+      !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
+    EVP_MD_CTX_cleanup(&tmp_ctx);
+    goto out;
+  }
+  EVP_MD_CTX_cleanup(&tmp_ctx);
+
+  pkctx = EVP_PKEY_CTX_new(pkey, NULL);
+  if (!pkctx ||
+      !EVP_PKEY_verify_init(pkctx) ||
+      !EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest)) {
+    goto out;
+  }
+  ret = EVP_PKEY_verify(pkctx, sig, sig_len, m, m_len);
+
+out:
+  EVP_PKEY_CTX_free(pkctx);
+  return ret;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c
new file mode 100644
index 0000000..6191a6f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ex_data.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/crypto.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+
+#include "internal.h"
+
+
+DEFINE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
+
+struct crypto_ex_data_func_st {
+  long argl;   // Arbitary long
+  void *argp;  // Arbitary void pointer
+  CRYPTO_EX_free *free_func;
+};
+
+int CRYPTO_get_ex_new_index(CRYPTO_EX_DATA_CLASS *ex_data_class, int *out_index,
+                            long argl, void *argp, CRYPTO_EX_free *free_func) {
+  CRYPTO_EX_DATA_FUNCS *funcs;
+  int ret = 0;
+
+  funcs = OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
+  if (funcs == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  funcs->argl = argl;
+  funcs->argp = argp;
+  funcs->free_func = free_func;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&ex_data_class->lock);
+
+  if (ex_data_class->meth == NULL) {
+    ex_data_class->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null();
+  }
+
+  if (ex_data_class->meth == NULL ||
+      !sk_CRYPTO_EX_DATA_FUNCS_push(ex_data_class->meth, funcs)) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    OPENSSL_free(funcs);
+    goto err;
+  }
+
+  *out_index = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth) - 1 +
+               ex_data_class->num_reserved;
+  ret = 1;
+
+err:
+  CRYPTO_STATIC_MUTEX_unlock_write(&ex_data_class->lock);
+  return ret;
+}
+
+int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) {
+  int n, i;
+
+  if (ad->sk == NULL) {
+    ad->sk = sk_void_new_null();
+    if (ad->sk == NULL) {
+      OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  n = sk_void_num(ad->sk);
+
+  // Add NULL values until the stack is long enough.
+  for (i = n; i <= index; i++) {
+    if (!sk_void_push(ad->sk, NULL)) {
+      OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  sk_void_set(ad->sk, index, val);
+  return 1;
+}
+
+void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) {
+  if (ad->sk == NULL || idx < 0 || (size_t)idx >= sk_void_num(ad->sk)) {
+    return NULL;
+  }
+  return sk_void_value(ad->sk, idx);
+}
+
+// get_func_pointers takes a copy of the CRYPTO_EX_DATA_FUNCS pointers, if any,
+// for the given class. If there are some pointers, it sets |*out| to point to
+// a fresh stack of them. Otherwise it sets |*out| to NULL. It returns one on
+// success or zero on error.
+static int get_func_pointers(STACK_OF(CRYPTO_EX_DATA_FUNCS) **out,
+                             CRYPTO_EX_DATA_CLASS *ex_data_class) {
+  size_t n;
+
+  *out = NULL;
+
+  // CRYPTO_EX_DATA_FUNCS structures are static once set, so we can take a
+  // shallow copy of the list under lock and then use the structures without
+  // the lock held.
+  CRYPTO_STATIC_MUTEX_lock_read(&ex_data_class->lock);
+  n = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth);
+  if (n > 0) {
+    *out = sk_CRYPTO_EX_DATA_FUNCS_dup(ex_data_class->meth);
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&ex_data_class->lock);
+
+  if (n > 0 && *out == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+void CRYPTO_new_ex_data(CRYPTO_EX_DATA *ad) {
+  ad->sk = NULL;
+}
+
+void CRYPTO_free_ex_data(CRYPTO_EX_DATA_CLASS *ex_data_class, void *obj,
+                         CRYPTO_EX_DATA *ad) {
+  if (ad->sk == NULL) {
+    // Nothing to do.
+    return;
+  }
+
+  STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+  if (!get_func_pointers(&func_pointers, ex_data_class)) {
+    // TODO(davidben): This leaks memory on malloc error.
+    return;
+  }
+
+  for (size_t i = 0; i < sk_CRYPTO_EX_DATA_FUNCS_num(func_pointers); i++) {
+    CRYPTO_EX_DATA_FUNCS *func_pointer =
+        sk_CRYPTO_EX_DATA_FUNCS_value(func_pointers, i);
+    if (func_pointer->free_func) {
+      void *ptr = CRYPTO_get_ex_data(ad, i + ex_data_class->num_reserved);
+      func_pointer->free_func(obj, ptr, ad, i + ex_data_class->num_reserved,
+                              func_pointer->argl, func_pointer->argp);
+    }
+  }
+
+  sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+  sk_void_free(ad->sk);
+  ad->sk = NULL;
+}
+
+void CRYPTO_cleanup_all_ex_data(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c.grpc_back
new file mode 100644
index 0000000..71d60a5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/ex_data.c.grpc_back	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ex_data.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#include "internal.h"
+
+
+DEFINE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
+
+struct crypto_ex_data_func_st {
+  long argl;   // Arbitary long
+  void *argp;  // Arbitary void pointer
+  CRYPTO_EX_free *free_func;
+};
+
+int CRYPTO_get_ex_new_index(CRYPTO_EX_DATA_CLASS *ex_data_class, int *out_index,
+                            long argl, void *argp, CRYPTO_EX_free *free_func) {
+  CRYPTO_EX_DATA_FUNCS *funcs;
+  int ret = 0;
+
+  funcs = OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
+  if (funcs == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  funcs->argl = argl;
+  funcs->argp = argp;
+  funcs->free_func = free_func;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&ex_data_class->lock);
+
+  if (ex_data_class->meth == NULL) {
+    ex_data_class->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null();
+  }
+
+  if (ex_data_class->meth == NULL ||
+      !sk_CRYPTO_EX_DATA_FUNCS_push(ex_data_class->meth, funcs)) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    OPENSSL_free(funcs);
+    goto err;
+  }
+
+  *out_index = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth) - 1 +
+               ex_data_class->num_reserved;
+  ret = 1;
+
+err:
+  CRYPTO_STATIC_MUTEX_unlock_write(&ex_data_class->lock);
+  return ret;
+}
+
+int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) {
+  int n, i;
+
+  if (ad->sk == NULL) {
+    ad->sk = sk_void_new_null();
+    if (ad->sk == NULL) {
+      OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  n = sk_void_num(ad->sk);
+
+  // Add NULL values until the stack is long enough.
+  for (i = n; i <= index; i++) {
+    if (!sk_void_push(ad->sk, NULL)) {
+      OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  sk_void_set(ad->sk, index, val);
+  return 1;
+}
+
+void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) {
+  if (ad->sk == NULL || idx < 0 || (size_t)idx >= sk_void_num(ad->sk)) {
+    return NULL;
+  }
+  return sk_void_value(ad->sk, idx);
+}
+
+// get_func_pointers takes a copy of the CRYPTO_EX_DATA_FUNCS pointers, if any,
+// for the given class. If there are some pointers, it sets |*out| to point to
+// a fresh stack of them. Otherwise it sets |*out| to NULL. It returns one on
+// success or zero on error.
+static int get_func_pointers(STACK_OF(CRYPTO_EX_DATA_FUNCS) **out,
+                             CRYPTO_EX_DATA_CLASS *ex_data_class) {
+  size_t n;
+
+  *out = NULL;
+
+  // CRYPTO_EX_DATA_FUNCS structures are static once set, so we can take a
+  // shallow copy of the list under lock and then use the structures without
+  // the lock held.
+  CRYPTO_STATIC_MUTEX_lock_read(&ex_data_class->lock);
+  n = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth);
+  if (n > 0) {
+    *out = sk_CRYPTO_EX_DATA_FUNCS_dup(ex_data_class->meth);
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&ex_data_class->lock);
+
+  if (n > 0 && *out == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+void CRYPTO_new_ex_data(CRYPTO_EX_DATA *ad) {
+  ad->sk = NULL;
+}
+
+void CRYPTO_free_ex_data(CRYPTO_EX_DATA_CLASS *ex_data_class, void *obj,
+                         CRYPTO_EX_DATA *ad) {
+  if (ad->sk == NULL) {
+    // Nothing to do.
+    return;
+  }
+
+  STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+  if (!get_func_pointers(&func_pointers, ex_data_class)) {
+    // TODO(davidben): This leaks memory on malloc error.
+    return;
+  }
+
+  for (size_t i = 0; i < sk_CRYPTO_EX_DATA_FUNCS_num(func_pointers); i++) {
+    CRYPTO_EX_DATA_FUNCS *func_pointer =
+        sk_CRYPTO_EX_DATA_FUNCS_value(func_pointers, i);
+    if (func_pointer->free_func) {
+      void *ptr = CRYPTO_get_ex_data(ad, i + ex_data_class->num_reserved);
+      func_pointer->free_func(obj, ptr, ad, i + ex_data_class->num_reserved,
+                              func_pointer->argl, func_pointer->argp);
+    }
+  }
+
+  sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+  sk_void_free(ad->sk);
+  ad->sk = NULL;
+}
+
+void CRYPTO_cleanup_all_ex_data(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c
new file mode 100644
index 0000000..ef61b94
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c	
@@ -0,0 +1,108 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/aes.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/cpu.h>
+
+#include "internal.h"
+#include "../modes/internal.h"
+
+
+// Be aware that different sets of AES functions use incompatible key
+// representations, varying in format of the key schedule, the |AES_KEY.rounds|
+// value, or both. Therefore they cannot mix. Also, on AArch64, the plain-C
+// code, above, is incompatible with the |aes_hw_*| functions.
+
+void AES_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  if (hwaes_capable()) {
+    aes_hw_encrypt(in, out, key);
+  } else if (vpaes_capable()) {
+    vpaes_encrypt(in, out, key);
+  } else {
+    aes_nohw_encrypt(in, out, key);
+  }
+}
+
+void AES_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  if (hwaes_capable()) {
+    aes_hw_decrypt(in, out, key);
+  } else if (vpaes_capable()) {
+    vpaes_decrypt(in, out, key);
+  } else {
+    aes_nohw_decrypt(in, out, key);
+  }
+}
+
+int AES_set_encrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
+  if (bits != 128 && bits != 192 && bits != 256) {
+    return -2;
+  }
+  if (hwaes_capable()) {
+    return aes_hw_set_encrypt_key(key, bits, aeskey);
+  } else if (vpaes_capable()) {
+    return vpaes_set_encrypt_key(key, bits, aeskey);
+  } else {
+    return aes_nohw_set_encrypt_key(key, bits, aeskey);
+  }
+}
+
+int AES_set_decrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
+  if (bits != 128 && bits != 192 && bits != 256) {
+    return -2;
+  }
+  if (hwaes_capable()) {
+    return aes_hw_set_decrypt_key(key, bits, aeskey);
+  } else if (vpaes_capable()) {
+    return vpaes_set_decrypt_key(key, bits, aeskey);
+  } else {
+    return aes_nohw_set_decrypt_key(key, bits, aeskey);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c.grpc_back
new file mode 100644
index 0000000..f60281d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes.c.grpc_back	
@@ -0,0 +1,108 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/aes.h>
+
+#include <assert.h>
+
+#include <openssl/cpu.h>
+
+#include "internal.h"
+#include "../modes/internal.h"
+
+
+// Be aware that different sets of AES functions use incompatible key
+// representations, varying in format of the key schedule, the |AES_KEY.rounds|
+// value, or both. Therefore they cannot mix. Also, on AArch64, the plain-C
+// code, above, is incompatible with the |aes_hw_*| functions.
+
+void AES_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  if (hwaes_capable()) {
+    aes_hw_encrypt(in, out, key);
+  } else if (vpaes_capable()) {
+    vpaes_encrypt(in, out, key);
+  } else {
+    aes_nohw_encrypt(in, out, key);
+  }
+}
+
+void AES_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  if (hwaes_capable()) {
+    aes_hw_decrypt(in, out, key);
+  } else if (vpaes_capable()) {
+    vpaes_decrypt(in, out, key);
+  } else {
+    aes_nohw_decrypt(in, out, key);
+  }
+}
+
+int AES_set_encrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
+  if (bits != 128 && bits != 192 && bits != 256) {
+    return -2;
+  }
+  if (hwaes_capable()) {
+    return aes_hw_set_encrypt_key(key, bits, aeskey);
+  } else if (vpaes_capable()) {
+    return vpaes_set_encrypt_key(key, bits, aeskey);
+  } else {
+    return aes_nohw_set_encrypt_key(key, bits, aeskey);
+  }
+}
+
+int AES_set_decrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
+  if (bits != 128 && bits != 192 && bits != 256) {
+    return -2;
+  }
+  if (hwaes_capable()) {
+    return aes_hw_set_decrypt_key(key, bits, aeskey);
+  } else if (vpaes_capable()) {
+    return vpaes_set_decrypt_key(key, bits, aeskey);
+  } else {
+    return aes_nohw_set_decrypt_key(key, bits, aeskey);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c
new file mode 100644
index 0000000..18ffdc9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c	
@@ -0,0 +1,1282 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/aes.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+#if defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+
+// This file contains a constant-time implementation of AES, bitsliced with
+// 32-bit, 64-bit, or 128-bit words, operating on two-, four-, and eight-block
+// batches, respectively. The 128-bit implementation requires SSE2 intrinsics.
+//
+// This implementation is based on the algorithms described in the following
+// references:
+// - https://bearssl.org/constanttime.html#aes
+// - https://eprint.iacr.org/2009/129.pdf
+// - https://eprint.iacr.org/2009/191.pdf
+
+
+// Word operations.
+//
+// An aes_word_t is the word used for this AES implementation. Throughout this
+// file, bits and bytes are ordered little-endian, though "left" and "right"
+// shifts match the operations themselves, which makes them reversed in a
+// little-endian, left-to-right reading.
+//
+// Eight |aes_word_t|s contain |AES_NOHW_BATCH_SIZE| blocks. The bits in an
+// |aes_word_t| are divided into 16 consecutive groups of |AES_NOHW_BATCH_SIZE|
+// bits each, each corresponding to a byte in an AES block in column-major
+// order (AES's byte order). We refer to these as "logical bytes". Note, in the
+// 32-bit and 64-bit implementations, they are smaller than a byte. (The
+// contents of a logical byte will be described later.)
+//
+// MSVC does not support C bit operators on |__m128i|, so the wrapper functions
+// |aes_nohw_and|, etc., should be used instead. Note |aes_nohw_shift_left| and
+// |aes_nohw_shift_right| measure the shift in logical bytes. That is, the shift
+// value ranges from 0 to 15 independent of |aes_word_t| and
+// |AES_NOHW_BATCH_SIZE|.
+//
+// This ordering is different from https://eprint.iacr.org/2009/129.pdf, which
+// uses row-major order. Matching the AES order was easier to reason about, and
+// we do not have PSHUFB available to arbitrarily permute bytes.
+
+#if defined(OPENSSL_SSE2)
+typedef __m128i aes_word_t;
+// AES_NOHW_WORD_SIZE is sizeof(aes_word_t). alignas(sizeof(T)) does not work in
+// MSVC, so we define a constant.
+#define AES_NOHW_WORD_SIZE 16
+#define AES_NOHW_BATCH_SIZE 8
+#define AES_NOHW_ROW0_MASK \
+  _mm_set_epi32(0x000000ff, 0x000000ff, 0x000000ff, 0x000000ff)
+#define AES_NOHW_ROW1_MASK \
+  _mm_set_epi32(0x0000ff00, 0x0000ff00, 0x0000ff00, 0x0000ff00)
+#define AES_NOHW_ROW2_MASK \
+  _mm_set_epi32(0x00ff0000, 0x00ff0000, 0x00ff0000, 0x00ff0000)
+#define AES_NOHW_ROW3_MASK \
+  _mm_set_epi32(0xff000000, 0xff000000, 0xff000000, 0xff000000)
+#define AES_NOHW_COL01_MASK \
+  _mm_set_epi32(0x00000000, 0x00000000, 0xffffffff, 0xffffffff)
+#define AES_NOHW_COL2_MASK \
+  _mm_set_epi32(0x00000000, 0xffffffff, 0x00000000, 0x00000000)
+#define AES_NOHW_COL3_MASK \
+  _mm_set_epi32(0xffffffff, 0x00000000, 0x00000000, 0x00000000)
+
+static inline aes_word_t aes_nohw_and(aes_word_t a, aes_word_t b) {
+  return _mm_and_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_or(aes_word_t a, aes_word_t b) {
+  return _mm_or_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_xor(aes_word_t a, aes_word_t b) {
+  return _mm_xor_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_not(aes_word_t a) {
+  return _mm_xor_si128(
+      a, _mm_set_epi32(0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff));
+}
+
+// These are macros because parameters to |_mm_slli_si128| and |_mm_srli_si128|
+// must be constants.
+#define aes_nohw_shift_left(/* aes_word_t */ a, /* const */ i) \
+  _mm_slli_si128((a), (i))
+#define aes_nohw_shift_right(/* aes_word_t */ a, /* const */ i) \
+  _mm_srli_si128((a), (i))
+#else  // !OPENSSL_SSE2
+#if defined(OPENSSL_64_BIT)
+typedef uint64_t aes_word_t;
+#define AES_NOHW_WORD_SIZE 8
+#define AES_NOHW_BATCH_SIZE 4
+#define AES_NOHW_ROW0_MASK UINT64_C(0x000f000f000f000f)
+#define AES_NOHW_ROW1_MASK UINT64_C(0x00f000f000f000f0)
+#define AES_NOHW_ROW2_MASK UINT64_C(0x0f000f000f000f00)
+#define AES_NOHW_ROW3_MASK UINT64_C(0xf000f000f000f000)
+#define AES_NOHW_COL01_MASK UINT64_C(0x00000000ffffffff)
+#define AES_NOHW_COL2_MASK UINT64_C(0x0000ffff00000000)
+#define AES_NOHW_COL3_MASK UINT64_C(0xffff000000000000)
+#else  // !OPENSSL_64_BIT
+typedef uint32_t aes_word_t;
+#define AES_NOHW_WORD_SIZE 4
+#define AES_NOHW_BATCH_SIZE 2
+#define AES_NOHW_ROW0_MASK 0x03030303
+#define AES_NOHW_ROW1_MASK 0x0c0c0c0c
+#define AES_NOHW_ROW2_MASK 0x30303030
+#define AES_NOHW_ROW3_MASK 0xc0c0c0c0
+#define AES_NOHW_COL01_MASK 0x0000ffff
+#define AES_NOHW_COL2_MASK 0x00ff0000
+#define AES_NOHW_COL3_MASK 0xff000000
+#endif  // OPENSSL_64_BIT
+
+static inline aes_word_t aes_nohw_and(aes_word_t a, aes_word_t b) {
+  return a & b;
+}
+
+static inline aes_word_t aes_nohw_or(aes_word_t a, aes_word_t b) {
+  return a | b;
+}
+
+static inline aes_word_t aes_nohw_xor(aes_word_t a, aes_word_t b) {
+  return a ^ b;
+}
+
+static inline aes_word_t aes_nohw_not(aes_word_t a) { return ~a; }
+
+static inline aes_word_t aes_nohw_shift_left(aes_word_t a, aes_word_t i) {
+  return a << (i * AES_NOHW_BATCH_SIZE);
+}
+
+static inline aes_word_t aes_nohw_shift_right(aes_word_t a, aes_word_t i) {
+  return a >> (i * AES_NOHW_BATCH_SIZE);
+}
+#endif  // OPENSSL_SSE2
+
+OPENSSL_STATIC_ASSERT(AES_NOHW_BATCH_SIZE * 128 == 8 * 8 * sizeof(aes_word_t),
+                      "batch size does not match word size");
+OPENSSL_STATIC_ASSERT(AES_NOHW_WORD_SIZE == sizeof(aes_word_t),
+                      "AES_NOHW_WORD_SIZE is incorrect");
+
+
+// Block representations.
+//
+// This implementation uses three representations for AES blocks. First, the
+// public API represents blocks as uint8_t[16] in the usual way. Second, most
+// AES steps are evaluated in bitsliced form, stored in an |AES_NOHW_BATCH|.
+// This stores |AES_NOHW_BATCH_SIZE| blocks in bitsliced order. For 64-bit words
+// containing bitsliced blocks a, b, c, d, this would be as follows (vertical
+// bars divide logical bytes):
+//
+//   batch.w[0] = a0 b0 c0 d0 |  a8  b8  c8  d8 | a16 b16 c16 d16 ...
+//   batch.w[1] = a1 b1 c1 d1 |  a9  b9  c9  d9 | a17 b17 c17 d17 ...
+//   batch.w[2] = a2 b2 c2 d2 | a10 b10 c10 d10 | a18 b18 c18 d18 ...
+//   batch.w[3] = a3 b3 c3 d3 | a11 b11 c11 d11 | a19 b19 c19 d19 ...
+//   ...
+//
+// Finally, an individual block may be stored as an intermediate form in an
+// aes_word_t[AES_NOHW_BLOCK_WORDS]. In this form, we permute the bits in each
+// block, so that block[0]'s ith logical byte contains least-significant
+// |AES_NOHW_BATCH_SIZE| bits of byte i, block[1] contains the next group of
+// |AES_NOHW_BATCH_SIZE| bits, and so on. We refer to this transformation as
+// "compacting" the block. Note this is no-op with 128-bit words because then
+// |AES_NOHW_BLOCK_WORDS| is one and |AES_NOHW_BATCH_SIZE| is eight. For 64-bit
+// words, one block would be stored in two words:
+//
+//   block[0] = a0 a1 a2 a3 |  a8  a9 a10 a11 | a16 a17 a18 a19 ...
+//   block[1] = a4 a5 a6 a7 | a12 a13 a14 a15 | a20 a21 a22 a23 ...
+//
+// Observe that the distances between corresponding bits in bitsliced and
+// compact bit orders match. If we line up corresponding words of each block,
+// the bitsliced and compact representations may be converted by tranposing bits
+// in corresponding logical bytes. Continuing the 64-bit example:
+//
+//   block_a[0] = a0 a1 a2 a3 |  a8  a9 a10 a11 | a16 a17 a18 a19 ...
+//   block_b[0] = b0 b1 b2 b3 |  b8  b9 b10 b11 | b16 b17 b18 b19 ...
+//   block_c[0] = c0 c1 c2 c3 |  c8  c9 c10 c11 | c16 c17 c18 c19 ...
+//   block_d[0] = d0 d1 d2 d3 |  d8  d9 d10 d11 | d16 d17 d18 d19 ...
+//
+//   batch.w[0] = a0 b0 c0 d0 |  a8  b8  c8  d8 | a16 b16 c16 d16 ...
+//   batch.w[1] = a1 b1 c1 d1 |  a9  b9  c9  d9 | a17 b17 c17 d17 ...
+//   batch.w[2] = a2 b2 c2 d2 | a10 b10 c10 d10 | a18 b18 c18 d18 ...
+//   batch.w[3] = a3 b3 c3 d3 | a11 b11 c11 d11 | a19 b19 c19 d19 ...
+//
+// Note also that bitwise operations and (logical) byte permutations on an
+// |aes_word_t| work equally for the bitsliced and compact words.
+//
+// We use the compact form in the |AES_KEY| representation to save work
+// inflating round keys into |AES_NOHW_BATCH|. The compact form also exists
+// temporarily while moving blocks in or out of an |AES_NOHW_BATCH|, immediately
+// before or after |aes_nohw_transpose|.
+
+#define AES_NOHW_BLOCK_WORDS (16 / sizeof(aes_word_t))
+
+// An AES_NOHW_BATCH stores |AES_NOHW_BATCH_SIZE| blocks. Unless otherwise
+// specified, it is in bitsliced form.
+typedef struct {
+  aes_word_t w[8];
+} AES_NOHW_BATCH;
+
+// An AES_NOHW_SCHEDULE is an expanded bitsliced AES key schedule. It is
+// suitable for encryption or decryption. It is as large as |AES_NOHW_BATCH|
+// |AES_KEY|s so it should not be used as a long-term key representation.
+typedef struct {
+  // keys is an array of batches, one for each round key. Each batch stores
+  // |AES_NOHW_BATCH_SIZE| copies of the round key in bitsliced form.
+  AES_NOHW_BATCH keys[AES_MAXNR + 1];
+} AES_NOHW_SCHEDULE;
+
+// aes_nohw_batch_set sets the |i|th block of |batch| to |in|. |batch| is in
+// compact form.
+static inline void aes_nohw_batch_set(AES_NOHW_BATCH *batch,
+                                      const aes_word_t in[AES_NOHW_BLOCK_WORDS],
+                                      size_t i) {
+  // Note the words are interleaved. The order comes from |aes_nohw_transpose|.
+  // If |i| is zero and this is the 64-bit implementation, in[0] contains bits
+  // 0-3 and in[1] contains bits 4-7. We place in[0] at w[0] and in[1] at
+  // w[4] so that bits 0 and 4 are in the correct position. (In general, bits
+  // along diagonals of |AES_NOHW_BATCH_SIZE| by |AES_NOHW_BATCH_SIZE| squares
+  // will be correctly placed.)
+  assert(i < AES_NOHW_BATCH_SIZE);
+#if defined(OPENSSL_SSE2)
+  batch->w[i] = in[0];
+#elif defined(OPENSSL_64_BIT)
+  batch->w[i] = in[0];
+  batch->w[i + 4] = in[1];
+#else
+  batch->w[i] = in[0];
+  batch->w[i + 2] = in[1];
+  batch->w[i + 4] = in[2];
+  batch->w[i + 6] = in[3];
+#endif
+}
+
+// aes_nohw_batch_get writes the |i|th block of |batch| to |out|. |batch| is in
+// compact form.
+static inline void aes_nohw_batch_get(const AES_NOHW_BATCH *batch,
+                                      aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                                      size_t i) {
+  assert(i < AES_NOHW_BATCH_SIZE);
+#if defined(OPENSSL_SSE2)
+  out[0] = batch->w[i];
+#elif defined(OPENSSL_64_BIT)
+  out[0] = batch->w[i];
+  out[1] = batch->w[i + 4];
+#else
+  out[0] = batch->w[i];
+  out[1] = batch->w[i + 2];
+  out[2] = batch->w[i + 4];
+  out[3] = batch->w[i + 6];
+#endif
+}
+
+#if !defined(OPENSSL_SSE2)
+// aes_nohw_delta_swap returns |a| with bits |a & mask| and
+// |a & (mask << shift)| swapped. |mask| and |mask << shift| may not overlap.
+static inline aes_word_t aes_nohw_delta_swap(aes_word_t a, aes_word_t mask,
+                                             aes_word_t shift) {
+  // See
+  // https://reflectionsonsecurity.wordpress.com/2014/05/11/efficient-bit-permutation-using-delta-swaps/
+  aes_word_t b = (a ^ (a >> shift)) & mask;
+  return a ^ b ^ (b << shift);
+}
+
+// In the 32-bit and 64-bit implementations, a block spans multiple words.
+// |aes_nohw_compact_block| must permute bits across different words. First we
+// implement |aes_nohw_compact_word| which performs a smaller version of the
+// transformation which stays within a single word.
+//
+// These transformations are generalizations of the output of
+// http://programming.sirrida.de/calcperm.php on smaller inputs.
+#if defined(OPENSSL_64_BIT)
+static inline uint64_t aes_nohw_compact_word(uint64_t a) {
+  // Numbering the 64/2 = 16 4-bit chunks, least to most significant, we swap
+  // quartets of those chunks:
+  //   0 1 2 3 | 4 5 6 7 | 8  9 10 11 | 12 13 14 15 =>
+  //   0 2 1 3 | 4 6 5 7 | 8 10  9 11 | 12 14 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00f000f000f000f0), 4);
+  // Swap quartets of 8-bit chunks (still numbering by 4-bit chunks):
+  //   0 2 1 3 | 4 6 5 7 | 8 10  9 11 | 12 14 13 15 =>
+  //   0 2 4 6 | 1 3 5 7 | 8 10 12 14 |  9 11 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x0000ff000000ff00), 8);
+  // Swap quartets of 16-bit chunks (still numbering by 4-bit chunks):
+  //   0 2 4 6 | 1  3  5  7 | 8 10 12 14 | 9 11 13 15 =>
+  //   0 2 4 6 | 8 10 12 14 | 1  3  5  7 | 9 11 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00000000ffff0000), 16);
+  return a;
+}
+
+static inline uint64_t aes_nohw_uncompact_word(uint64_t a) {
+  // Reverse the steps of |aes_nohw_uncompact_word|.
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00000000ffff0000), 16);
+  a = aes_nohw_delta_swap(a, UINT64_C(0x0000ff000000ff00), 8);
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00f000f000f000f0), 4);
+  return a;
+}
+#else   // !OPENSSL_64_BIT
+static inline uint32_t aes_nohw_compact_word(uint32_t a) {
+  // Numbering the 32/2 = 16 pairs of bits, least to most significant, we swap:
+  //   0 1 2 3 | 4 5 6 7 | 8  9 10 11 | 12 13 14 15 =>
+  //   0 4 2 6 | 1 5 3 7 | 8 12 10 14 |  9 13 11 15
+  // Note:  0x00cc = 0b0000_0000_1100_1100
+  //   0x00cc << 6 = 0b0011_0011_0000_0000
+  a = aes_nohw_delta_swap(a, 0x00cc00cc, 6);
+  // Now we swap groups of four bits (still numbering by pairs):
+  //   0 4 2  6 | 1 5 3  7 | 8 12 10 14 | 9 13 11 15 =>
+  //   0 4 8 12 | 1 5 9 13 | 2  6 10 14 | 3  7 11 15
+  // Note: 0x0000_f0f0 << 12 = 0x0f0f_0000
+  a = aes_nohw_delta_swap(a, 0x0000f0f0, 12);
+  return a;
+}
+
+static inline uint32_t aes_nohw_uncompact_word(uint32_t a) {
+  // Reverse the steps of |aes_nohw_uncompact_word|.
+  a = aes_nohw_delta_swap(a, 0x0000f0f0, 12);
+  a = aes_nohw_delta_swap(a, 0x00cc00cc, 6);
+  return a;
+}
+
+static inline uint32_t aes_nohw_word_from_bytes(uint8_t a0, uint8_t a1,
+                                                uint8_t a2, uint8_t a3) {
+  return (uint32_t)a0 | ((uint32_t)a1 << 8) | ((uint32_t)a2 << 16) |
+         ((uint32_t)a3 << 24);
+}
+#endif  // OPENSSL_64_BIT
+#endif  // !OPENSSL_SSE2
+
+static inline void aes_nohw_compact_block(aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                                          const uint8_t in[16]) {
+  memcpy(out, in, 16);
+#if defined(OPENSSL_SSE2)
+  // No conversions needed.
+#elif defined(OPENSSL_64_BIT)
+  uint64_t a0 = aes_nohw_compact_word(out[0]);
+  uint64_t a1 = aes_nohw_compact_word(out[1]);
+  out[0] = (a0 & UINT64_C(0x00000000ffffffff)) | (a1 << 32);
+  out[1] = (a1 & UINT64_C(0xffffffff00000000)) | (a0 >> 32);
+#else
+  uint32_t a0 = aes_nohw_compact_word(out[0]);
+  uint32_t a1 = aes_nohw_compact_word(out[1]);
+  uint32_t a2 = aes_nohw_compact_word(out[2]);
+  uint32_t a3 = aes_nohw_compact_word(out[3]);
+  // Note clang, when building for ARM Thumb2, will sometimes miscompile
+  // expressions such as (a0 & 0x0000ff00) << 8, particularly when building
+  // without optimizations. This bug was introduced in
+  // https://reviews.llvm.org/rL340261 and fixed in
+  // https://reviews.llvm.org/rL351310. The following is written to avoid this.
+  out[0] = aes_nohw_word_from_bytes(a0, a1, a2, a3);
+  out[1] = aes_nohw_word_from_bytes(a0 >> 8, a1 >> 8, a2 >> 8, a3 >> 8);
+  out[2] = aes_nohw_word_from_bytes(a0 >> 16, a1 >> 16, a2 >> 16, a3 >> 16);
+  out[3] = aes_nohw_word_from_bytes(a0 >> 24, a1 >> 24, a2 >> 24, a3 >> 24);
+#endif
+}
+
+static inline void aes_nohw_uncompact_block(
+    uint8_t out[16], const aes_word_t in[AES_NOHW_BLOCK_WORDS]) {
+#if defined(OPENSSL_SSE2)
+  memcpy(out, in, 16);  // No conversions needed.
+#elif defined(OPENSSL_64_BIT)
+  uint64_t a0 = in[0];
+  uint64_t a1 = in[1];
+  uint64_t b0 =
+      aes_nohw_uncompact_word((a0 & UINT64_C(0x00000000ffffffff)) | (a1 << 32));
+  uint64_t b1 =
+      aes_nohw_uncompact_word((a1 & UINT64_C(0xffffffff00000000)) | (a0 >> 32));
+  memcpy(out, &b0, 8);
+  memcpy(out + 8, &b1, 8);
+#else
+  uint32_t a0 = in[0];
+  uint32_t a1 = in[1];
+  uint32_t a2 = in[2];
+  uint32_t a3 = in[3];
+  // Note clang, when building for ARM Thumb2, will sometimes miscompile
+  // expressions such as (a0 & 0x0000ff00) << 8, particularly when building
+  // without optimizations. This bug was introduced in
+  // https://reviews.llvm.org/rL340261 and fixed in
+  // https://reviews.llvm.org/rL351310. The following is written to avoid this.
+  uint32_t b0 = aes_nohw_word_from_bytes(a0, a1, a2, a3);
+  uint32_t b1 = aes_nohw_word_from_bytes(a0 >> 8, a1 >> 8, a2 >> 8, a3 >> 8);
+  uint32_t b2 =
+      aes_nohw_word_from_bytes(a0 >> 16, a1 >> 16, a2 >> 16, a3 >> 16);
+  uint32_t b3 =
+      aes_nohw_word_from_bytes(a0 >> 24, a1 >> 24, a2 >> 24, a3 >> 24);
+  b0 = aes_nohw_uncompact_word(b0);
+  b1 = aes_nohw_uncompact_word(b1);
+  b2 = aes_nohw_uncompact_word(b2);
+  b3 = aes_nohw_uncompact_word(b3);
+  memcpy(out, &b0, 4);
+  memcpy(out + 4, &b1, 4);
+  memcpy(out + 8, &b2, 4);
+  memcpy(out + 12, &b3, 4);
+#endif
+}
+
+// aes_nohw_swap_bits is a variation on a delta swap. It swaps the bits in
+// |*a & (mask << shift)| with the bits in |*b & mask|. |mask| and
+// |mask << shift| must not overlap. |mask| is specified as a |uint32_t|, but it
+// is repeated to the full width of |aes_word_t|.
+#if defined(OPENSSL_SSE2)
+// This must be a macro because |_mm_srli_epi32| and |_mm_slli_epi32| require
+// constant shift values.
+#define aes_nohw_swap_bits(/*__m128i* */ a, /*__m128i* */ b,              \
+                           /* uint32_t */ mask, /* const */ shift)        \
+  do {                                                                    \
+    __m128i swap =                                                        \
+        _mm_and_si128(_mm_xor_si128(_mm_srli_epi32(*(a), (shift)), *(b)), \
+                      _mm_set_epi32((mask), (mask), (mask), (mask)));     \
+    *(a) = _mm_xor_si128(*(a), _mm_slli_epi32(swap, (shift)));            \
+    *(b) = _mm_xor_si128(*(b), swap);                                     \
+                                                                          \
+  } while (0)
+#else
+static inline void aes_nohw_swap_bits(aes_word_t *a, aes_word_t *b,
+                                      uint32_t mask, aes_word_t shift) {
+#if defined(OPENSSL_64_BIT)
+  aes_word_t mask_w = (((uint64_t)mask) << 32) | mask;
+#else
+  aes_word_t mask_w = mask;
+#endif
+  // This is a variation on a delta swap.
+  aes_word_t swap = ((*a >> shift) ^ *b) & mask_w;
+  *a ^= swap << shift;
+  *b ^= swap;
+}
+#endif  // OPENSSL_SSE2
+
+// aes_nohw_transpose converts |batch| to and from bitsliced form. It divides
+// the 8 × word_size bits into AES_NOHW_BATCH_SIZE × AES_NOHW_BATCH_SIZE squares
+// and transposes each square.
+static void aes_nohw_transpose(AES_NOHW_BATCH *batch) {
+  // Swap bits with index 0 and 1 mod 2 (0x55 = 0b01010101).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[1], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[2], &batch->w[3], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[4], &batch->w[5], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[6], &batch->w[7], 0x55555555, 1);
+
+#if AES_NOHW_BATCH_SIZE >= 4
+  // Swap bits with index 0-1 and 2-3 mod 4 (0x33 = 0b00110011).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[2], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[1], &batch->w[3], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[4], &batch->w[6], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[5], &batch->w[7], 0x33333333, 2);
+#endif
+
+#if AES_NOHW_BATCH_SIZE >= 8
+  // Swap bits with index 0-3 and 4-7 mod 8 (0x0f = 0b00001111).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[4], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[1], &batch->w[5], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[2], &batch->w[6], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[3], &batch->w[7], 0x0f0f0f0f, 4);
+#endif
+}
+
+// aes_nohw_to_batch initializes |out| with the |num_blocks| blocks from |in|.
+// |num_blocks| must be at most |AES_NOHW_BATCH|.
+static void aes_nohw_to_batch(AES_NOHW_BATCH *out, const uint8_t *in,
+                              size_t num_blocks) {
+  // Don't leave unused blocks unitialized.
+  memset(out, 0, sizeof(AES_NOHW_BATCH));
+  assert(num_blocks <= AES_NOHW_BATCH_SIZE);
+  for (size_t i = 0; i < num_blocks; i++) {
+    aes_word_t block[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_compact_block(block, in + 16 * i);
+    aes_nohw_batch_set(out, block, i);
+  }
+
+  aes_nohw_transpose(out);
+}
+
+// aes_nohw_to_batch writes the first |num_blocks| blocks in |batch| to |out|.
+// |num_blocks| must be at most |AES_NOHW_BATCH|.
+static void aes_nohw_from_batch(uint8_t *out, size_t num_blocks,
+                                const AES_NOHW_BATCH *batch) {
+  AES_NOHW_BATCH copy = *batch;
+  aes_nohw_transpose(&copy);
+
+  assert(num_blocks <= AES_NOHW_BATCH_SIZE);
+  for (size_t i = 0; i < num_blocks; i++) {
+    aes_word_t block[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_batch_get(&copy, block, i);
+    aes_nohw_uncompact_block(out + 16 * i, block);
+  }
+}
+
+
+// AES round steps.
+
+static void aes_nohw_add_round_key(AES_NOHW_BATCH *batch,
+                                   const AES_NOHW_BATCH *key) {
+  for (size_t i = 0; i < 8; i++) {
+    batch->w[i] = aes_nohw_xor(batch->w[i], key->w[i]);
+  }
+}
+
+static void aes_nohw_sub_bytes(AES_NOHW_BATCH *batch) {
+  // See https://eprint.iacr.org/2009/191.pdf, Appendix C.
+  aes_word_t x0 = batch->w[7];
+  aes_word_t x1 = batch->w[6];
+  aes_word_t x2 = batch->w[5];
+  aes_word_t x3 = batch->w[4];
+  aes_word_t x4 = batch->w[3];
+  aes_word_t x5 = batch->w[2];
+  aes_word_t x6 = batch->w[1];
+  aes_word_t x7 = batch->w[0];
+
+  // Figure 2, the top linear transformation.
+  aes_word_t y14 = aes_nohw_xor(x3, x5);
+  aes_word_t y13 = aes_nohw_xor(x0, x6);
+  aes_word_t y9 = aes_nohw_xor(x0, x3);
+  aes_word_t y8 = aes_nohw_xor(x0, x5);
+  aes_word_t t0 = aes_nohw_xor(x1, x2);
+  aes_word_t y1 = aes_nohw_xor(t0, x7);
+  aes_word_t y4 = aes_nohw_xor(y1, x3);
+  aes_word_t y12 = aes_nohw_xor(y13, y14);
+  aes_word_t y2 = aes_nohw_xor(y1, x0);
+  aes_word_t y5 = aes_nohw_xor(y1, x6);
+  aes_word_t y3 = aes_nohw_xor(y5, y8);
+  aes_word_t t1 = aes_nohw_xor(x4, y12);
+  aes_word_t y15 = aes_nohw_xor(t1, x5);
+  aes_word_t y20 = aes_nohw_xor(t1, x1);
+  aes_word_t y6 = aes_nohw_xor(y15, x7);
+  aes_word_t y10 = aes_nohw_xor(y15, t0);
+  aes_word_t y11 = aes_nohw_xor(y20, y9);
+  aes_word_t y7 = aes_nohw_xor(x7, y11);
+  aes_word_t y17 = aes_nohw_xor(y10, y11);
+  aes_word_t y19 = aes_nohw_xor(y10, y8);
+  aes_word_t y16 = aes_nohw_xor(t0, y11);
+  aes_word_t y21 = aes_nohw_xor(y13, y16);
+  aes_word_t y18 = aes_nohw_xor(x0, y16);
+
+  // Figure 3, the middle non-linear section.
+  aes_word_t t2 = aes_nohw_and(y12, y15);
+  aes_word_t t3 = aes_nohw_and(y3, y6);
+  aes_word_t t4 = aes_nohw_xor(t3, t2);
+  aes_word_t t5 = aes_nohw_and(y4, x7);
+  aes_word_t t6 = aes_nohw_xor(t5, t2);
+  aes_word_t t7 = aes_nohw_and(y13, y16);
+  aes_word_t t8 = aes_nohw_and(y5, y1);
+  aes_word_t t9 = aes_nohw_xor(t8, t7);
+  aes_word_t t10 = aes_nohw_and(y2, y7);
+  aes_word_t t11 = aes_nohw_xor(t10, t7);
+  aes_word_t t12 = aes_nohw_and(y9, y11);
+  aes_word_t t13 = aes_nohw_and(y14, y17);
+  aes_word_t t14 = aes_nohw_xor(t13, t12);
+  aes_word_t t15 = aes_nohw_and(y8, y10);
+  aes_word_t t16 = aes_nohw_xor(t15, t12);
+  aes_word_t t17 = aes_nohw_xor(t4, t14);
+  aes_word_t t18 = aes_nohw_xor(t6, t16);
+  aes_word_t t19 = aes_nohw_xor(t9, t14);
+  aes_word_t t20 = aes_nohw_xor(t11, t16);
+  aes_word_t t21 = aes_nohw_xor(t17, y20);
+  aes_word_t t22 = aes_nohw_xor(t18, y19);
+  aes_word_t t23 = aes_nohw_xor(t19, y21);
+  aes_word_t t24 = aes_nohw_xor(t20, y18);
+  aes_word_t t25 = aes_nohw_xor(t21, t22);
+  aes_word_t t26 = aes_nohw_and(t21, t23);
+  aes_word_t t27 = aes_nohw_xor(t24, t26);
+  aes_word_t t28 = aes_nohw_and(t25, t27);
+  aes_word_t t29 = aes_nohw_xor(t28, t22);
+  aes_word_t t30 = aes_nohw_xor(t23, t24);
+  aes_word_t t31 = aes_nohw_xor(t22, t26);
+  aes_word_t t32 = aes_nohw_and(t31, t30);
+  aes_word_t t33 = aes_nohw_xor(t32, t24);
+  aes_word_t t34 = aes_nohw_xor(t23, t33);
+  aes_word_t t35 = aes_nohw_xor(t27, t33);
+  aes_word_t t36 = aes_nohw_and(t24, t35);
+  aes_word_t t37 = aes_nohw_xor(t36, t34);
+  aes_word_t t38 = aes_nohw_xor(t27, t36);
+  aes_word_t t39 = aes_nohw_and(t29, t38);
+  aes_word_t t40 = aes_nohw_xor(t25, t39);
+  aes_word_t t41 = aes_nohw_xor(t40, t37);
+  aes_word_t t42 = aes_nohw_xor(t29, t33);
+  aes_word_t t43 = aes_nohw_xor(t29, t40);
+  aes_word_t t44 = aes_nohw_xor(t33, t37);
+  aes_word_t t45 = aes_nohw_xor(t42, t41);
+  aes_word_t z0 = aes_nohw_and(t44, y15);
+  aes_word_t z1 = aes_nohw_and(t37, y6);
+  aes_word_t z2 = aes_nohw_and(t33, x7);
+  aes_word_t z3 = aes_nohw_and(t43, y16);
+  aes_word_t z4 = aes_nohw_and(t40, y1);
+  aes_word_t z5 = aes_nohw_and(t29, y7);
+  aes_word_t z6 = aes_nohw_and(t42, y11);
+  aes_word_t z7 = aes_nohw_and(t45, y17);
+  aes_word_t z8 = aes_nohw_and(t41, y10);
+  aes_word_t z9 = aes_nohw_and(t44, y12);
+  aes_word_t z10 = aes_nohw_and(t37, y3);
+  aes_word_t z11 = aes_nohw_and(t33, y4);
+  aes_word_t z12 = aes_nohw_and(t43, y13);
+  aes_word_t z13 = aes_nohw_and(t40, y5);
+  aes_word_t z14 = aes_nohw_and(t29, y2);
+  aes_word_t z15 = aes_nohw_and(t42, y9);
+  aes_word_t z16 = aes_nohw_and(t45, y14);
+  aes_word_t z17 = aes_nohw_and(t41, y8);
+
+  // Figure 4, bottom linear transformation.
+  aes_word_t t46 = aes_nohw_xor(z15, z16);
+  aes_word_t t47 = aes_nohw_xor(z10, z11);
+  aes_word_t t48 = aes_nohw_xor(z5, z13);
+  aes_word_t t49 = aes_nohw_xor(z9, z10);
+  aes_word_t t50 = aes_nohw_xor(z2, z12);
+  aes_word_t t51 = aes_nohw_xor(z2, z5);
+  aes_word_t t52 = aes_nohw_xor(z7, z8);
+  aes_word_t t53 = aes_nohw_xor(z0, z3);
+  aes_word_t t54 = aes_nohw_xor(z6, z7);
+  aes_word_t t55 = aes_nohw_xor(z16, z17);
+  aes_word_t t56 = aes_nohw_xor(z12, t48);
+  aes_word_t t57 = aes_nohw_xor(t50, t53);
+  aes_word_t t58 = aes_nohw_xor(z4, t46);
+  aes_word_t t59 = aes_nohw_xor(z3, t54);
+  aes_word_t t60 = aes_nohw_xor(t46, t57);
+  aes_word_t t61 = aes_nohw_xor(z14, t57);
+  aes_word_t t62 = aes_nohw_xor(t52, t58);
+  aes_word_t t63 = aes_nohw_xor(t49, t58);
+  aes_word_t t64 = aes_nohw_xor(z4, t59);
+  aes_word_t t65 = aes_nohw_xor(t61, t62);
+  aes_word_t t66 = aes_nohw_xor(z1, t63);
+  aes_word_t s0 = aes_nohw_xor(t59, t63);
+  aes_word_t s6 = aes_nohw_xor(t56, aes_nohw_not(t62));
+  aes_word_t s7 = aes_nohw_xor(t48, aes_nohw_not(t60));
+  aes_word_t t67 = aes_nohw_xor(t64, t65);
+  aes_word_t s3 = aes_nohw_xor(t53, t66);
+  aes_word_t s4 = aes_nohw_xor(t51, t66);
+  aes_word_t s5 = aes_nohw_xor(t47, t65);
+  aes_word_t s1 = aes_nohw_xor(t64, aes_nohw_not(s3));
+  aes_word_t s2 = aes_nohw_xor(t55, aes_nohw_not(t67));
+
+  batch->w[0] = s7;
+  batch->w[1] = s6;
+  batch->w[2] = s5;
+  batch->w[3] = s4;
+  batch->w[4] = s3;
+  batch->w[5] = s2;
+  batch->w[6] = s1;
+  batch->w[7] = s0;
+}
+
+// aes_nohw_sub_bytes_inv_affine inverts the affine transform portion of the AES
+// S-box, defined in FIPS PUB 197, section 5.1.1, step 2.
+static void aes_nohw_sub_bytes_inv_affine(AES_NOHW_BATCH *batch) {
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  // Apply the circulant [0 0 1 0 0 1 0 1]. This is the inverse of the circulant
+  // [1 0 0 0 1 1 1 1].
+  aes_word_t b0 = aes_nohw_xor(a2, aes_nohw_xor(a5, a7));
+  aes_word_t b1 = aes_nohw_xor(a3, aes_nohw_xor(a6, a0));
+  aes_word_t b2 = aes_nohw_xor(a4, aes_nohw_xor(a7, a1));
+  aes_word_t b3 = aes_nohw_xor(a5, aes_nohw_xor(a0, a2));
+  aes_word_t b4 = aes_nohw_xor(a6, aes_nohw_xor(a1, a3));
+  aes_word_t b5 = aes_nohw_xor(a7, aes_nohw_xor(a2, a4));
+  aes_word_t b6 = aes_nohw_xor(a0, aes_nohw_xor(a3, a5));
+  aes_word_t b7 = aes_nohw_xor(a1, aes_nohw_xor(a4, a6));
+
+  // XOR 0x05. Equivalently, we could XOR 0x63 before applying the circulant,
+  // but 0x05 has lower Hamming weight. (0x05 is the circulant applied to 0x63.)
+  batch->w[0] = aes_nohw_not(b0);
+  batch->w[1] = b1;
+  batch->w[2] = aes_nohw_not(b2);
+  batch->w[3] = b3;
+  batch->w[4] = b4;
+  batch->w[5] = b5;
+  batch->w[6] = b6;
+  batch->w[7] = b7;
+}
+
+static void aes_nohw_inv_sub_bytes(AES_NOHW_BATCH *batch) {
+  // We implement the inverse S-box using the forwards implementation with the
+  // technique described in https://www.bearssl.org/constanttime.html#aes.
+  //
+  // The forwards S-box inverts its input and applies an affine transformation:
+  // S(x) = A(Inv(x)). Thus Inv(x) = InvA(S(x)). The inverse S-box is then:
+  //
+  //   InvS(x) = Inv(InvA(x)).
+  //           = InvA(S(InvA(x)))
+  aes_nohw_sub_bytes_inv_affine(batch);
+  aes_nohw_sub_bytes(batch);
+  aes_nohw_sub_bytes_inv_affine(batch);
+}
+
+// aes_nohw_rotate_cols_right returns |v| with the columns in each row rotated
+// to the right by |n|. This is a macro because |aes_nohw_shift_*| require
+// constant shift counts in the SSE2 implementation.
+#define aes_nohw_rotate_cols_right(/* aes_word_t */ v, /* const */ n) \
+  (aes_nohw_or(aes_nohw_shift_right((v), (n)*4),                      \
+               aes_nohw_shift_left((v), 16 - (n)*4)))
+
+static void aes_nohw_shift_rows(AES_NOHW_BATCH *batch) {
+  for (size_t i = 0; i < 8; i++) {
+    aes_word_t row0 = aes_nohw_and(batch->w[i], AES_NOHW_ROW0_MASK);
+    aes_word_t row1 = aes_nohw_and(batch->w[i], AES_NOHW_ROW1_MASK);
+    aes_word_t row2 = aes_nohw_and(batch->w[i], AES_NOHW_ROW2_MASK);
+    aes_word_t row3 = aes_nohw_and(batch->w[i], AES_NOHW_ROW3_MASK);
+    row1 = aes_nohw_rotate_cols_right(row1, 1);
+    row2 = aes_nohw_rotate_cols_right(row2, 2);
+    row3 = aes_nohw_rotate_cols_right(row3, 3);
+    batch->w[i] = aes_nohw_or(aes_nohw_or(row0, row1), aes_nohw_or(row2, row3));
+  }
+}
+
+static void aes_nohw_inv_shift_rows(AES_NOHW_BATCH *batch) {
+  for (size_t i = 0; i < 8; i++) {
+    aes_word_t row0 = aes_nohw_and(batch->w[i], AES_NOHW_ROW0_MASK);
+    aes_word_t row1 = aes_nohw_and(batch->w[i], AES_NOHW_ROW1_MASK);
+    aes_word_t row2 = aes_nohw_and(batch->w[i], AES_NOHW_ROW2_MASK);
+    aes_word_t row3 = aes_nohw_and(batch->w[i], AES_NOHW_ROW3_MASK);
+    row1 = aes_nohw_rotate_cols_right(row1, 3);
+    row2 = aes_nohw_rotate_cols_right(row2, 2);
+    row3 = aes_nohw_rotate_cols_right(row3, 1);
+    batch->w[i] = aes_nohw_or(aes_nohw_or(row0, row1), aes_nohw_or(row2, row3));
+  }
+}
+
+// aes_nohw_rotate_rows_down returns |v| with the rows in each column rotated
+// down by one.
+static inline aes_word_t aes_nohw_rotate_rows_down(aes_word_t v) {
+#if defined(OPENSSL_SSE2)
+  return _mm_or_si128(_mm_srli_epi32(v, 8), _mm_slli_epi32(v, 24));
+#elif defined(OPENSSL_64_BIT)
+  return ((v >> 4) & UINT64_C(0x0fff0fff0fff0fff)) |
+         ((v << 12) & UINT64_C(0xf000f000f000f000));
+#else
+  return ((v >> 2) & 0x3f3f3f3f) | ((v << 6) & 0xc0c0c0c0);
+#endif
+}
+
+// aes_nohw_rotate_rows_twice returns |v| with the rows in each column rotated
+// by two.
+static inline aes_word_t aes_nohw_rotate_rows_twice(aes_word_t v) {
+#if defined(OPENSSL_SSE2)
+  return _mm_or_si128(_mm_srli_epi32(v, 16), _mm_slli_epi32(v, 16));
+#elif defined(OPENSSL_64_BIT)
+  return ((v >> 8) & UINT64_C(0x00ff00ff00ff00ff)) |
+         ((v << 8) & UINT64_C(0xff00ff00ff00ff00));
+#else
+  return ((v >> 4) & 0x0f0f0f0f) | ((v << 4) & 0xf0f0f0f0);
+#endif
+}
+
+static void aes_nohw_mix_columns(AES_NOHW_BATCH *batch) {
+  // See https://eprint.iacr.org/2009/129.pdf, section 4.4 and appendix A.
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  aes_word_t r0 = aes_nohw_rotate_rows_down(a0);
+  aes_word_t a0_r0 = aes_nohw_xor(a0, r0);
+  aes_word_t r1 = aes_nohw_rotate_rows_down(a1);
+  aes_word_t a1_r1 = aes_nohw_xor(a1, r1);
+  aes_word_t r2 = aes_nohw_rotate_rows_down(a2);
+  aes_word_t a2_r2 = aes_nohw_xor(a2, r2);
+  aes_word_t r3 = aes_nohw_rotate_rows_down(a3);
+  aes_word_t a3_r3 = aes_nohw_xor(a3, r3);
+  aes_word_t r4 = aes_nohw_rotate_rows_down(a4);
+  aes_word_t a4_r4 = aes_nohw_xor(a4, r4);
+  aes_word_t r5 = aes_nohw_rotate_rows_down(a5);
+  aes_word_t a5_r5 = aes_nohw_xor(a5, r5);
+  aes_word_t r6 = aes_nohw_rotate_rows_down(a6);
+  aes_word_t a6_r6 = aes_nohw_xor(a6, r6);
+  aes_word_t r7 = aes_nohw_rotate_rows_down(a7);
+  aes_word_t a7_r7 = aes_nohw_xor(a7, r7);
+
+  batch->w[0] =
+      aes_nohw_xor(aes_nohw_xor(a7_r7, r0), aes_nohw_rotate_rows_twice(a0_r0));
+  batch->w[1] =
+      aes_nohw_xor(aes_nohw_xor(a0_r0, a7_r7),
+                   aes_nohw_xor(r1, aes_nohw_rotate_rows_twice(a1_r1)));
+  batch->w[2] =
+      aes_nohw_xor(aes_nohw_xor(a1_r1, r2), aes_nohw_rotate_rows_twice(a2_r2));
+  batch->w[3] =
+      aes_nohw_xor(aes_nohw_xor(a2_r2, a7_r7),
+                   aes_nohw_xor(r3, aes_nohw_rotate_rows_twice(a3_r3)));
+  batch->w[4] =
+      aes_nohw_xor(aes_nohw_xor(a3_r3, a7_r7),
+                   aes_nohw_xor(r4, aes_nohw_rotate_rows_twice(a4_r4)));
+  batch->w[5] =
+      aes_nohw_xor(aes_nohw_xor(a4_r4, r5), aes_nohw_rotate_rows_twice(a5_r5));
+  batch->w[6] =
+      aes_nohw_xor(aes_nohw_xor(a5_r5, r6), aes_nohw_rotate_rows_twice(a6_r6));
+  batch->w[7] =
+      aes_nohw_xor(aes_nohw_xor(a6_r6, r7), aes_nohw_rotate_rows_twice(a7_r7));
+}
+
+static void aes_nohw_inv_mix_columns(AES_NOHW_BATCH *batch) {
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  // bsaes-x86_64.pl describes the following decomposition of the inverse
+  // MixColumns matrix, credited to Jussi Kivilinna. This gives a much simpler
+  // multiplication.
+  //
+  // | 0e 0b 0d 09 |   | 02 03 01 01 |   | 05 00 04 00 |
+  // | 09 0e 0b 0d | = | 01 02 03 01 | x | 00 05 00 04 |
+  // | 0d 09 0e 0b |   | 01 01 02 03 |   | 04 00 05 00 |
+  // | 0b 0d 09 0e |   | 03 01 01 02 |   | 00 04 00 05 |
+  //
+  // First, apply the [5 0 4 0] matrix. Multiplying by 4 in F_(2^8) is described
+  // by the following bit equations:
+  //
+  //   b0 = a6
+  //   b1 = a6 ^ a7
+  //   b2 = a0 ^ a7
+  //   b3 = a1 ^ a6
+  //   b4 = a2 ^ a6 ^ a7
+  //   b5 = a3 ^ a7
+  //   b6 = a4
+  //   b7 = a5
+  //
+  // Each coefficient is given by:
+  //
+  //   b_ij = 05·a_ij ⊕ 04·a_i(j+2) = 04·(a_ij ⊕ a_i(j+2)) ⊕ a_ij
+  //
+  // We combine the two equations below. Note a_i(j+2) is a row rotation.
+  aes_word_t a0_r0 = aes_nohw_xor(a0, aes_nohw_rotate_rows_twice(a0));
+  aes_word_t a1_r1 = aes_nohw_xor(a1, aes_nohw_rotate_rows_twice(a1));
+  aes_word_t a2_r2 = aes_nohw_xor(a2, aes_nohw_rotate_rows_twice(a2));
+  aes_word_t a3_r3 = aes_nohw_xor(a3, aes_nohw_rotate_rows_twice(a3));
+  aes_word_t a4_r4 = aes_nohw_xor(a4, aes_nohw_rotate_rows_twice(a4));
+  aes_word_t a5_r5 = aes_nohw_xor(a5, aes_nohw_rotate_rows_twice(a5));
+  aes_word_t a6_r6 = aes_nohw_xor(a6, aes_nohw_rotate_rows_twice(a6));
+  aes_word_t a7_r7 = aes_nohw_xor(a7, aes_nohw_rotate_rows_twice(a7));
+
+  batch->w[0] = aes_nohw_xor(a0, a6_r6);
+  batch->w[1] = aes_nohw_xor(a1, aes_nohw_xor(a6_r6, a7_r7));
+  batch->w[2] = aes_nohw_xor(a2, aes_nohw_xor(a0_r0, a7_r7));
+  batch->w[3] = aes_nohw_xor(a3, aes_nohw_xor(a1_r1, a6_r6));
+  batch->w[4] =
+      aes_nohw_xor(aes_nohw_xor(a4, a2_r2), aes_nohw_xor(a6_r6, a7_r7));
+  batch->w[5] = aes_nohw_xor(a5, aes_nohw_xor(a3_r3, a7_r7));
+  batch->w[6] = aes_nohw_xor(a6, a4_r4);
+  batch->w[7] = aes_nohw_xor(a7, a5_r5);
+
+  // Apply the [02 03 01 01] matrix, which is just MixColumns.
+  aes_nohw_mix_columns(batch);
+}
+
+static void aes_nohw_encrypt_batch(const AES_NOHW_SCHEDULE *key,
+                                   size_t num_rounds, AES_NOHW_BATCH *batch) {
+  aes_nohw_add_round_key(batch, &key->keys[0]);
+  for (size_t i = 1; i < num_rounds; i++) {
+    aes_nohw_sub_bytes(batch);
+    aes_nohw_shift_rows(batch);
+    aes_nohw_mix_columns(batch);
+    aes_nohw_add_round_key(batch, &key->keys[i]);
+  }
+  aes_nohw_sub_bytes(batch);
+  aes_nohw_shift_rows(batch);
+  aes_nohw_add_round_key(batch, &key->keys[num_rounds]);
+}
+
+static void aes_nohw_decrypt_batch(const AES_NOHW_SCHEDULE *key,
+                                   size_t num_rounds, AES_NOHW_BATCH *batch) {
+  aes_nohw_add_round_key(batch, &key->keys[num_rounds]);
+  aes_nohw_inv_shift_rows(batch);
+  aes_nohw_inv_sub_bytes(batch);
+  for (size_t i = num_rounds - 1; i > 0; i--) {
+    aes_nohw_add_round_key(batch, &key->keys[i]);
+    aes_nohw_inv_mix_columns(batch);
+    aes_nohw_inv_shift_rows(batch);
+    aes_nohw_inv_sub_bytes(batch);
+  }
+  aes_nohw_add_round_key(batch, &key->keys[0]);
+}
+
+
+// Key schedule.
+
+static void aes_nohw_expand_round_keys(AES_NOHW_SCHEDULE *out,
+                                       const AES_KEY *key) {
+  for (size_t i = 0; i <= key->rounds; i++) {
+    // Copy the round key into each block in the batch.
+    for (size_t j = 0; j < AES_NOHW_BATCH_SIZE; j++) {
+      aes_word_t tmp[AES_NOHW_BLOCK_WORDS];
+      memcpy(tmp, key->rd_key + 4 * i, 16);
+      aes_nohw_batch_set(&out->keys[i], tmp, j);
+    }
+    aes_nohw_transpose(&out->keys[i]);
+  }
+}
+
+static const uint8_t aes_nohw_rcon[10] = {0x01, 0x02, 0x04, 0x08, 0x10,
+                                          0x20, 0x40, 0x80, 0x1b, 0x36};
+
+// aes_nohw_rcon_slice returns the |i|th group of |AES_NOHW_BATCH_SIZE| bits in
+// |rcon|, stored in a |aes_word_t|.
+static inline aes_word_t aes_nohw_rcon_slice(uint8_t rcon, size_t i) {
+  rcon = (rcon >> (i * AES_NOHW_BATCH_SIZE)) & ((1 << AES_NOHW_BATCH_SIZE) - 1);
+#if defined(OPENSSL_SSE2)
+  return _mm_set_epi32(0, 0, 0, rcon);
+#else
+  return ((aes_word_t)rcon);
+#endif
+}
+
+static void aes_nohw_sub_block(aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                               const aes_word_t in[AES_NOHW_BLOCK_WORDS]) {
+  AES_NOHW_BATCH batch;
+  memset(&batch, 0, sizeof(batch));
+  aes_nohw_batch_set(&batch, in, 0);
+  aes_nohw_transpose(&batch);
+  aes_nohw_sub_bytes(&batch);
+  aes_nohw_transpose(&batch);
+  aes_nohw_batch_get(&batch, out, 0);
+}
+
+static void aes_nohw_setup_key_128(AES_KEY *key, const uint8_t in[16]) {
+  key->rounds = 10;
+
+  aes_word_t block[AES_NOHW_BLOCK_WORDS];
+  aes_nohw_compact_block(block, in);
+  memcpy(key->rd_key, block, 16);
+
+  for (size_t i = 1; i <= 10; i++) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block);
+    uint8_t rcon = aes_nohw_rcon[i - 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate |rcon| and the transformed word into the first word.
+      block[j] = aes_nohw_xor(block[j], aes_nohw_rcon_slice(rcon, j));
+      block[j] = aes_nohw_xor(
+          block[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words. Note this is reordered from the usual
+      // formulation to avoid needing masks.
+      aes_word_t v = block[j];
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 4));
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 8));
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * i, block, 16);
+  }
+}
+
+static void aes_nohw_setup_key_192(AES_KEY *key, const uint8_t in[24]) {
+  key->rounds = 12;
+
+  aes_word_t storage1[AES_NOHW_BLOCK_WORDS], storage2[AES_NOHW_BLOCK_WORDS];
+  aes_word_t *block1 = storage1, *block2 = storage2;
+
+  // AES-192's key schedule is complex because each key schedule iteration
+  // produces six words, but we compute on blocks and each block is four words.
+  // We maintain a sliding window of two blocks, filled to 1.5 blocks at a time.
+  // We loop below every three blocks or two key schedule iterations.
+  //
+  // On entry to the loop, |block1| and the first half of |block2| contain the
+  // previous key schedule iteration. |block1| has been written to |key|, but
+  // |block2| has not as it is incomplete.
+  aes_nohw_compact_block(block1, in);
+  memcpy(key->rd_key, block1, 16);
+
+  uint8_t half_block[16] = {0};
+  memcpy(half_block, in + 16, 8);
+  aes_nohw_compact_block(block2, half_block);
+
+  for (size_t i = 0; i < 4; i++) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block2);
+    uint8_t rcon = aes_nohw_rcon[2 * i];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Compute the first two words of the next key schedule iteration, which
+      // go in the second half of |block2|. The first two words of the previous
+      // iteration are in the first half of |block1|. Apply |rcon| here too
+      // because the shifts match.
+      block2[j] = aes_nohw_or(
+          block2[j],
+          aes_nohw_shift_left(
+              aes_nohw_xor(block1[j], aes_nohw_rcon_slice(rcon, j)), 8));
+      // Incorporate the transformed word and propagate. Note the last word of
+      // the previous iteration corresponds to the second word of |copy|. This
+      // is incorporated into the first word of the next iteration, or the third
+      // word of |block2|.
+      block2[j] = aes_nohw_xor(
+          block2[j], aes_nohw_and(aes_nohw_shift_left(
+                                      aes_nohw_rotate_rows_down(sub[j]), 4),
+                                  AES_NOHW_COL2_MASK));
+      block2[j] = aes_nohw_xor(
+          block2[j],
+          aes_nohw_and(aes_nohw_shift_left(block2[j], 4), AES_NOHW_COL3_MASK));
+
+      // Compute the remaining four words, which fill |block1|. Begin by moving
+      // the corresponding words of the previous iteration: the second half of
+      // |block1| and the first half of |block2|.
+      block1[j] = aes_nohw_shift_right(block1[j], 8);
+      block1[j] = aes_nohw_or(block1[j], aes_nohw_shift_left(block2[j], 8));
+      // Incorporate the second word, computed previously in |block2|, and
+      // propagate.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_right(block2[j], 12));
+      aes_word_t v = block1[j];
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 4));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 8));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 12));
+    }
+
+    // This completes two round keys. Note half of |block2| was computed in the
+    // previous loop iteration but was not yet output.
+    memcpy(key->rd_key + 4 * (3 * i + 1), block2, 16);
+    memcpy(key->rd_key + 4 * (3 * i + 2), block1, 16);
+
+    aes_nohw_sub_block(sub, block1);
+    rcon = aes_nohw_rcon[2 * i + 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Compute the first four words of the next key schedule iteration in
+      // |block2|. Begin by moving the corresponding words of the previous
+      // iteration: the second half of |block2| and the first half of |block1|.
+      block2[j] = aes_nohw_shift_right(block2[j], 8);
+      block2[j] = aes_nohw_or(block2[j], aes_nohw_shift_left(block1[j], 8));
+      // Incorporate rcon and the transformed word. Note the last word of the
+      // previous iteration corresponds to the last word of |copy|.
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_rcon_slice(rcon, j));
+      block2[j] = aes_nohw_xor(
+          block2[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block2[j];
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 4));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 8));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 12));
+
+      // Compute the last two words, which go in the first half of |block1|. The
+      // last two words of the previous iteration are in the second half of
+      // |block1|.
+      block1[j] = aes_nohw_shift_right(block1[j], 8);
+      // Propagate blocks and mask off the excess.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_right(block2[j], 12));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(block1[j], 4));
+      block1[j] = aes_nohw_and(block1[j], AES_NOHW_COL01_MASK);
+    }
+
+    // |block2| has a complete round key. |block1| will be completed in the next
+    // iteration.
+    memcpy(key->rd_key + 4 * (3 * i + 3), block2, 16);
+
+    // Swap blocks to restore the invariant.
+    aes_word_t *tmp = block1;
+    block1 = block2;
+    block2 = tmp;
+  }
+}
+
+static void aes_nohw_setup_key_256(AES_KEY *key, const uint8_t in[32]) {
+  key->rounds = 14;
+
+  // Each key schedule iteration produces two round keys.
+  aes_word_t block1[AES_NOHW_BLOCK_WORDS], block2[AES_NOHW_BLOCK_WORDS];
+  aes_nohw_compact_block(block1, in);
+  memcpy(key->rd_key, block1, 16);
+
+  aes_nohw_compact_block(block2, in + 16);
+  memcpy(key->rd_key + 4, block2, 16);
+
+  for (size_t i = 2; i <= 14; i += 2) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block2);
+    uint8_t rcon = aes_nohw_rcon[i / 2 - 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate |rcon| and the transformed word into the first word.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_rcon_slice(rcon, j));
+      block1[j] = aes_nohw_xor(
+          block1[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block1[j];
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 4));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 8));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * i, block1, 16);
+
+    if (i == 14) {
+      break;
+    }
+
+    aes_nohw_sub_block(sub, block1);
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate the transformed word into the first word.
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_right(sub[j], 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block2[j];
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 4));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 8));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * (i + 1), block2, 16);
+  }
+}
+
+
+// External API.
+
+int aes_nohw_set_encrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey) {
+  switch (bits) {
+    case 128:
+      aes_nohw_setup_key_128(aeskey, key);
+      return 0;
+    case 192:
+      aes_nohw_setup_key_192(aeskey, key);
+      return 0;
+    case 256:
+      aes_nohw_setup_key_256(aeskey, key);
+      return 0;
+  }
+  return 1;
+}
+
+int aes_nohw_set_decrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey) {
+  return aes_nohw_set_encrypt_key(key, bits, aeskey);
+}
+
+void aes_nohw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  AES_NOHW_BATCH batch;
+  aes_nohw_to_batch(&batch, in, /*num_blocks=*/1);
+  aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+  aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+}
+
+void aes_nohw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  AES_NOHW_BATCH batch;
+  aes_nohw_to_batch(&batch, in, /*num_blocks=*/1);
+  aes_nohw_decrypt_batch(&sched, key->rounds, &batch);
+  aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+}
+
+static inline void aes_nohw_xor_block(uint8_t out[16], const uint8_t a[16],
+                                      const uint8_t b[16]) {
+  for (size_t i = 0; i < 16; i += sizeof(aes_word_t)) {
+    aes_word_t x, y;
+    memcpy(&x, a + i, sizeof(aes_word_t));
+    memcpy(&y, b + i, sizeof(aes_word_t));
+    x = aes_nohw_xor(x, y);
+    memcpy(out + i, &x, sizeof(aes_word_t));
+  }
+}
+
+void aes_nohw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                   size_t blocks, const AES_KEY *key,
+                                   const uint8_t ivec[16]) {
+  if (blocks == 0) {
+    return;
+  }
+
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+
+  // Make |AES_NOHW_BATCH_SIZE| copies of |ivec|.
+  alignas(AES_NOHW_WORD_SIZE) union {
+    uint32_t u32[AES_NOHW_BATCH_SIZE * 4];
+    uint8_t u8[AES_NOHW_BATCH_SIZE * 16];
+  } ivs, enc_ivs;
+  for (size_t i = 0; i < AES_NOHW_BATCH_SIZE; i++) {
+    memcpy(ivs.u8 + 16 * i, ivec, 16);
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ivs.u32[3]);
+  for (;;) {
+    // Update counters.
+    for (size_t i = 0; i < AES_NOHW_BATCH_SIZE; i++) {
+      ivs.u32[4 * i + 3] = CRYPTO_bswap4(ctr + i);
+    }
+
+    size_t todo = blocks >= AES_NOHW_BATCH_SIZE ? AES_NOHW_BATCH_SIZE : blocks;
+    AES_NOHW_BATCH batch;
+    aes_nohw_to_batch(&batch, ivs.u8, todo);
+    aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+    aes_nohw_from_batch(enc_ivs.u8, todo, &batch);
+
+    for (size_t i = 0; i < todo; i++) {
+      aes_nohw_xor_block(out + 16 * i, in + 16 * i, enc_ivs.u8 + 16 * i);
+    }
+
+    blocks -= todo;
+    if (blocks == 0) {
+      break;
+    }
+
+    in += 16 * AES_NOHW_BATCH_SIZE;
+    out += 16 * AES_NOHW_BATCH_SIZE;
+    ctr += AES_NOHW_BATCH_SIZE;
+  }
+}
+
+void aes_nohw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const AES_KEY *key, uint8_t *ivec, const int enc) {
+  assert(len % 16 == 0);
+  size_t blocks = len / 16;
+  if (blocks == 0) {
+    return;
+  }
+
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  alignas(AES_NOHW_WORD_SIZE) uint8_t iv[16];
+  memcpy(iv, ivec, 16);
+
+  if (enc) {
+    // CBC encryption is not parallelizable.
+    while (blocks > 0) {
+      aes_nohw_xor_block(iv, iv, in);
+
+      AES_NOHW_BATCH batch;
+      aes_nohw_to_batch(&batch, iv, /*num_blocks=*/1);
+      aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+      aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+
+      memcpy(iv, out, 16);
+
+      in += 16;
+      out += 16;
+      blocks--;
+    }
+    memcpy(ivec, iv, 16);
+    return;
+  }
+
+  for (;;) {
+    size_t todo = blocks >= AES_NOHW_BATCH_SIZE ? AES_NOHW_BATCH_SIZE : blocks;
+    // Make a copy of the input so we can decrypt in-place.
+    alignas(AES_NOHW_WORD_SIZE) uint8_t copy[AES_NOHW_BATCH_SIZE * 16];
+    memcpy(copy, in, todo * 16);
+
+    AES_NOHW_BATCH batch;
+    aes_nohw_to_batch(&batch, in, todo);
+    aes_nohw_decrypt_batch(&sched, key->rounds, &batch);
+    aes_nohw_from_batch(out, todo, &batch);
+
+    aes_nohw_xor_block(out, out, iv);
+    for (size_t i = 1; i < todo; i++) {
+      aes_nohw_xor_block(out + 16 * i, out + 16 * i, copy + 16 * (i - 1));
+    }
+
+    // Save the last block as the IV.
+    memcpy(iv, copy + 16 * (todo - 1), 16);
+
+    blocks -= todo;
+    if (blocks == 0) {
+      break;
+    }
+
+    in += 16 * AES_NOHW_BATCH_SIZE;
+    out += 16 * AES_NOHW_BATCH_SIZE;
+  }
+
+  memcpy(ivec, iv, 16);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c.grpc_back
new file mode 100644
index 0000000..ffbee89
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/aes_nohw.c.grpc_back	
@@ -0,0 +1,1282 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/aes.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+#if defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+
+// This file contains a constant-time implementation of AES, bitsliced with
+// 32-bit, 64-bit, or 128-bit words, operating on two-, four-, and eight-block
+// batches, respectively. The 128-bit implementation requires SSE2 intrinsics.
+//
+// This implementation is based on the algorithms described in the following
+// references:
+// - https://bearssl.org/constanttime.html#aes
+// - https://eprint.iacr.org/2009/129.pdf
+// - https://eprint.iacr.org/2009/191.pdf
+
+
+// Word operations.
+//
+// An aes_word_t is the word used for this AES implementation. Throughout this
+// file, bits and bytes are ordered little-endian, though "left" and "right"
+// shifts match the operations themselves, which makes them reversed in a
+// little-endian, left-to-right reading.
+//
+// Eight |aes_word_t|s contain |AES_NOHW_BATCH_SIZE| blocks. The bits in an
+// |aes_word_t| are divided into 16 consecutive groups of |AES_NOHW_BATCH_SIZE|
+// bits each, each corresponding to a byte in an AES block in column-major
+// order (AES's byte order). We refer to these as "logical bytes". Note, in the
+// 32-bit and 64-bit implementations, they are smaller than a byte. (The
+// contents of a logical byte will be described later.)
+//
+// MSVC does not support C bit operators on |__m128i|, so the wrapper functions
+// |aes_nohw_and|, etc., should be used instead. Note |aes_nohw_shift_left| and
+// |aes_nohw_shift_right| measure the shift in logical bytes. That is, the shift
+// value ranges from 0 to 15 independent of |aes_word_t| and
+// |AES_NOHW_BATCH_SIZE|.
+//
+// This ordering is different from https://eprint.iacr.org/2009/129.pdf, which
+// uses row-major order. Matching the AES order was easier to reason about, and
+// we do not have PSHUFB available to arbitrarily permute bytes.
+
+#if defined(OPENSSL_SSE2)
+typedef __m128i aes_word_t;
+// AES_NOHW_WORD_SIZE is sizeof(aes_word_t). alignas(sizeof(T)) does not work in
+// MSVC, so we define a constant.
+#define AES_NOHW_WORD_SIZE 16
+#define AES_NOHW_BATCH_SIZE 8
+#define AES_NOHW_ROW0_MASK \
+  _mm_set_epi32(0x000000ff, 0x000000ff, 0x000000ff, 0x000000ff)
+#define AES_NOHW_ROW1_MASK \
+  _mm_set_epi32(0x0000ff00, 0x0000ff00, 0x0000ff00, 0x0000ff00)
+#define AES_NOHW_ROW2_MASK \
+  _mm_set_epi32(0x00ff0000, 0x00ff0000, 0x00ff0000, 0x00ff0000)
+#define AES_NOHW_ROW3_MASK \
+  _mm_set_epi32(0xff000000, 0xff000000, 0xff000000, 0xff000000)
+#define AES_NOHW_COL01_MASK \
+  _mm_set_epi32(0x00000000, 0x00000000, 0xffffffff, 0xffffffff)
+#define AES_NOHW_COL2_MASK \
+  _mm_set_epi32(0x00000000, 0xffffffff, 0x00000000, 0x00000000)
+#define AES_NOHW_COL3_MASK \
+  _mm_set_epi32(0xffffffff, 0x00000000, 0x00000000, 0x00000000)
+
+static inline aes_word_t aes_nohw_and(aes_word_t a, aes_word_t b) {
+  return _mm_and_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_or(aes_word_t a, aes_word_t b) {
+  return _mm_or_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_xor(aes_word_t a, aes_word_t b) {
+  return _mm_xor_si128(a, b);
+}
+
+static inline aes_word_t aes_nohw_not(aes_word_t a) {
+  return _mm_xor_si128(
+      a, _mm_set_epi32(0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff));
+}
+
+// These are macros because parameters to |_mm_slli_si128| and |_mm_srli_si128|
+// must be constants.
+#define aes_nohw_shift_left(/* aes_word_t */ a, /* const */ i) \
+  _mm_slli_si128((a), (i))
+#define aes_nohw_shift_right(/* aes_word_t */ a, /* const */ i) \
+  _mm_srli_si128((a), (i))
+#else  // !OPENSSL_SSE2
+#if defined(OPENSSL_64_BIT)
+typedef uint64_t aes_word_t;
+#define AES_NOHW_WORD_SIZE 8
+#define AES_NOHW_BATCH_SIZE 4
+#define AES_NOHW_ROW0_MASK UINT64_C(0x000f000f000f000f)
+#define AES_NOHW_ROW1_MASK UINT64_C(0x00f000f000f000f0)
+#define AES_NOHW_ROW2_MASK UINT64_C(0x0f000f000f000f00)
+#define AES_NOHW_ROW3_MASK UINT64_C(0xf000f000f000f000)
+#define AES_NOHW_COL01_MASK UINT64_C(0x00000000ffffffff)
+#define AES_NOHW_COL2_MASK UINT64_C(0x0000ffff00000000)
+#define AES_NOHW_COL3_MASK UINT64_C(0xffff000000000000)
+#else  // !OPENSSL_64_BIT
+typedef uint32_t aes_word_t;
+#define AES_NOHW_WORD_SIZE 4
+#define AES_NOHW_BATCH_SIZE 2
+#define AES_NOHW_ROW0_MASK 0x03030303
+#define AES_NOHW_ROW1_MASK 0x0c0c0c0c
+#define AES_NOHW_ROW2_MASK 0x30303030
+#define AES_NOHW_ROW3_MASK 0xc0c0c0c0
+#define AES_NOHW_COL01_MASK 0x0000ffff
+#define AES_NOHW_COL2_MASK 0x00ff0000
+#define AES_NOHW_COL3_MASK 0xff000000
+#endif  // OPENSSL_64_BIT
+
+static inline aes_word_t aes_nohw_and(aes_word_t a, aes_word_t b) {
+  return a & b;
+}
+
+static inline aes_word_t aes_nohw_or(aes_word_t a, aes_word_t b) {
+  return a | b;
+}
+
+static inline aes_word_t aes_nohw_xor(aes_word_t a, aes_word_t b) {
+  return a ^ b;
+}
+
+static inline aes_word_t aes_nohw_not(aes_word_t a) { return ~a; }
+
+static inline aes_word_t aes_nohw_shift_left(aes_word_t a, aes_word_t i) {
+  return a << (i * AES_NOHW_BATCH_SIZE);
+}
+
+static inline aes_word_t aes_nohw_shift_right(aes_word_t a, aes_word_t i) {
+  return a >> (i * AES_NOHW_BATCH_SIZE);
+}
+#endif  // OPENSSL_SSE2
+
+OPENSSL_STATIC_ASSERT(AES_NOHW_BATCH_SIZE * 128 == 8 * 8 * sizeof(aes_word_t),
+                      "batch size does not match word size");
+OPENSSL_STATIC_ASSERT(AES_NOHW_WORD_SIZE == sizeof(aes_word_t),
+                      "AES_NOHW_WORD_SIZE is incorrect");
+
+
+// Block representations.
+//
+// This implementation uses three representations for AES blocks. First, the
+// public API represents blocks as uint8_t[16] in the usual way. Second, most
+// AES steps are evaluated in bitsliced form, stored in an |AES_NOHW_BATCH|.
+// This stores |AES_NOHW_BATCH_SIZE| blocks in bitsliced order. For 64-bit words
+// containing bitsliced blocks a, b, c, d, this would be as follows (vertical
+// bars divide logical bytes):
+//
+//   batch.w[0] = a0 b0 c0 d0 |  a8  b8  c8  d8 | a16 b16 c16 d16 ...
+//   batch.w[1] = a1 b1 c1 d1 |  a9  b9  c9  d9 | a17 b17 c17 d17 ...
+//   batch.w[2] = a2 b2 c2 d2 | a10 b10 c10 d10 | a18 b18 c18 d18 ...
+//   batch.w[3] = a3 b3 c3 d3 | a11 b11 c11 d11 | a19 b19 c19 d19 ...
+//   ...
+//
+// Finally, an individual block may be stored as an intermediate form in an
+// aes_word_t[AES_NOHW_BLOCK_WORDS]. In this form, we permute the bits in each
+// block, so that block[0]'s ith logical byte contains least-significant
+// |AES_NOHW_BATCH_SIZE| bits of byte i, block[1] contains the next group of
+// |AES_NOHW_BATCH_SIZE| bits, and so on. We refer to this transformation as
+// "compacting" the block. Note this is no-op with 128-bit words because then
+// |AES_NOHW_BLOCK_WORDS| is one and |AES_NOHW_BATCH_SIZE| is eight. For 64-bit
+// words, one block would be stored in two words:
+//
+//   block[0] = a0 a1 a2 a3 |  a8  a9 a10 a11 | a16 a17 a18 a19 ...
+//   block[1] = a4 a5 a6 a7 | a12 a13 a14 a15 | a20 a21 a22 a23 ...
+//
+// Observe that the distances between corresponding bits in bitsliced and
+// compact bit orders match. If we line up corresponding words of each block,
+// the bitsliced and compact representations may be converted by tranposing bits
+// in corresponding logical bytes. Continuing the 64-bit example:
+//
+//   block_a[0] = a0 a1 a2 a3 |  a8  a9 a10 a11 | a16 a17 a18 a19 ...
+//   block_b[0] = b0 b1 b2 b3 |  b8  b9 b10 b11 | b16 b17 b18 b19 ...
+//   block_c[0] = c0 c1 c2 c3 |  c8  c9 c10 c11 | c16 c17 c18 c19 ...
+//   block_d[0] = d0 d1 d2 d3 |  d8  d9 d10 d11 | d16 d17 d18 d19 ...
+//
+//   batch.w[0] = a0 b0 c0 d0 |  a8  b8  c8  d8 | a16 b16 c16 d16 ...
+//   batch.w[1] = a1 b1 c1 d1 |  a9  b9  c9  d9 | a17 b17 c17 d17 ...
+//   batch.w[2] = a2 b2 c2 d2 | a10 b10 c10 d10 | a18 b18 c18 d18 ...
+//   batch.w[3] = a3 b3 c3 d3 | a11 b11 c11 d11 | a19 b19 c19 d19 ...
+//
+// Note also that bitwise operations and (logical) byte permutations on an
+// |aes_word_t| work equally for the bitsliced and compact words.
+//
+// We use the compact form in the |AES_KEY| representation to save work
+// inflating round keys into |AES_NOHW_BATCH|. The compact form also exists
+// temporarily while moving blocks in or out of an |AES_NOHW_BATCH|, immediately
+// before or after |aes_nohw_transpose|.
+
+#define AES_NOHW_BLOCK_WORDS (16 / sizeof(aes_word_t))
+
+// An AES_NOHW_BATCH stores |AES_NOHW_BATCH_SIZE| blocks. Unless otherwise
+// specified, it is in bitsliced form.
+typedef struct {
+  aes_word_t w[8];
+} AES_NOHW_BATCH;
+
+// An AES_NOHW_SCHEDULE is an expanded bitsliced AES key schedule. It is
+// suitable for encryption or decryption. It is as large as |AES_NOHW_BATCH|
+// |AES_KEY|s so it should not be used as a long-term key representation.
+typedef struct {
+  // keys is an array of batches, one for each round key. Each batch stores
+  // |AES_NOHW_BATCH_SIZE| copies of the round key in bitsliced form.
+  AES_NOHW_BATCH keys[AES_MAXNR + 1];
+} AES_NOHW_SCHEDULE;
+
+// aes_nohw_batch_set sets the |i|th block of |batch| to |in|. |batch| is in
+// compact form.
+static inline void aes_nohw_batch_set(AES_NOHW_BATCH *batch,
+                                      const aes_word_t in[AES_NOHW_BLOCK_WORDS],
+                                      size_t i) {
+  // Note the words are interleaved. The order comes from |aes_nohw_transpose|.
+  // If |i| is zero and this is the 64-bit implementation, in[0] contains bits
+  // 0-3 and in[1] contains bits 4-7. We place in[0] at w[0] and in[1] at
+  // w[4] so that bits 0 and 4 are in the correct position. (In general, bits
+  // along diagonals of |AES_NOHW_BATCH_SIZE| by |AES_NOHW_BATCH_SIZE| squares
+  // will be correctly placed.)
+  assert(i < AES_NOHW_BATCH_SIZE);
+#if defined(OPENSSL_SSE2)
+  batch->w[i] = in[0];
+#elif defined(OPENSSL_64_BIT)
+  batch->w[i] = in[0];
+  batch->w[i + 4] = in[1];
+#else
+  batch->w[i] = in[0];
+  batch->w[i + 2] = in[1];
+  batch->w[i + 4] = in[2];
+  batch->w[i + 6] = in[3];
+#endif
+}
+
+// aes_nohw_batch_get writes the |i|th block of |batch| to |out|. |batch| is in
+// compact form.
+static inline void aes_nohw_batch_get(const AES_NOHW_BATCH *batch,
+                                      aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                                      size_t i) {
+  assert(i < AES_NOHW_BATCH_SIZE);
+#if defined(OPENSSL_SSE2)
+  out[0] = batch->w[i];
+#elif defined(OPENSSL_64_BIT)
+  out[0] = batch->w[i];
+  out[1] = batch->w[i + 4];
+#else
+  out[0] = batch->w[i];
+  out[1] = batch->w[i + 2];
+  out[2] = batch->w[i + 4];
+  out[3] = batch->w[i + 6];
+#endif
+}
+
+#if !defined(OPENSSL_SSE2)
+// aes_nohw_delta_swap returns |a| with bits |a & mask| and
+// |a & (mask << shift)| swapped. |mask| and |mask << shift| may not overlap.
+static inline aes_word_t aes_nohw_delta_swap(aes_word_t a, aes_word_t mask,
+                                             aes_word_t shift) {
+  // See
+  // https://reflectionsonsecurity.wordpress.com/2014/05/11/efficient-bit-permutation-using-delta-swaps/
+  aes_word_t b = (a ^ (a >> shift)) & mask;
+  return a ^ b ^ (b << shift);
+}
+
+// In the 32-bit and 64-bit implementations, a block spans multiple words.
+// |aes_nohw_compact_block| must permute bits across different words. First we
+// implement |aes_nohw_compact_word| which performs a smaller version of the
+// transformation which stays within a single word.
+//
+// These transformations are generalizations of the output of
+// http://programming.sirrida.de/calcperm.php on smaller inputs.
+#if defined(OPENSSL_64_BIT)
+static inline uint64_t aes_nohw_compact_word(uint64_t a) {
+  // Numbering the 64/2 = 16 4-bit chunks, least to most significant, we swap
+  // quartets of those chunks:
+  //   0 1 2 3 | 4 5 6 7 | 8  9 10 11 | 12 13 14 15 =>
+  //   0 2 1 3 | 4 6 5 7 | 8 10  9 11 | 12 14 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00f000f000f000f0), 4);
+  // Swap quartets of 8-bit chunks (still numbering by 4-bit chunks):
+  //   0 2 1 3 | 4 6 5 7 | 8 10  9 11 | 12 14 13 15 =>
+  //   0 2 4 6 | 1 3 5 7 | 8 10 12 14 |  9 11 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x0000ff000000ff00), 8);
+  // Swap quartets of 16-bit chunks (still numbering by 4-bit chunks):
+  //   0 2 4 6 | 1  3  5  7 | 8 10 12 14 | 9 11 13 15 =>
+  //   0 2 4 6 | 8 10 12 14 | 1  3  5  7 | 9 11 13 15
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00000000ffff0000), 16);
+  return a;
+}
+
+static inline uint64_t aes_nohw_uncompact_word(uint64_t a) {
+  // Reverse the steps of |aes_nohw_uncompact_word|.
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00000000ffff0000), 16);
+  a = aes_nohw_delta_swap(a, UINT64_C(0x0000ff000000ff00), 8);
+  a = aes_nohw_delta_swap(a, UINT64_C(0x00f000f000f000f0), 4);
+  return a;
+}
+#else   // !OPENSSL_64_BIT
+static inline uint32_t aes_nohw_compact_word(uint32_t a) {
+  // Numbering the 32/2 = 16 pairs of bits, least to most significant, we swap:
+  //   0 1 2 3 | 4 5 6 7 | 8  9 10 11 | 12 13 14 15 =>
+  //   0 4 2 6 | 1 5 3 7 | 8 12 10 14 |  9 13 11 15
+  // Note:  0x00cc = 0b0000_0000_1100_1100
+  //   0x00cc << 6 = 0b0011_0011_0000_0000
+  a = aes_nohw_delta_swap(a, 0x00cc00cc, 6);
+  // Now we swap groups of four bits (still numbering by pairs):
+  //   0 4 2  6 | 1 5 3  7 | 8 12 10 14 | 9 13 11 15 =>
+  //   0 4 8 12 | 1 5 9 13 | 2  6 10 14 | 3  7 11 15
+  // Note: 0x0000_f0f0 << 12 = 0x0f0f_0000
+  a = aes_nohw_delta_swap(a, 0x0000f0f0, 12);
+  return a;
+}
+
+static inline uint32_t aes_nohw_uncompact_word(uint32_t a) {
+  // Reverse the steps of |aes_nohw_uncompact_word|.
+  a = aes_nohw_delta_swap(a, 0x0000f0f0, 12);
+  a = aes_nohw_delta_swap(a, 0x00cc00cc, 6);
+  return a;
+}
+
+static inline uint32_t aes_nohw_word_from_bytes(uint8_t a0, uint8_t a1,
+                                                uint8_t a2, uint8_t a3) {
+  return (uint32_t)a0 | ((uint32_t)a1 << 8) | ((uint32_t)a2 << 16) |
+         ((uint32_t)a3 << 24);
+}
+#endif  // OPENSSL_64_BIT
+#endif  // !OPENSSL_SSE2
+
+static inline void aes_nohw_compact_block(aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                                          const uint8_t in[16]) {
+  memcpy(out, in, 16);
+#if defined(OPENSSL_SSE2)
+  // No conversions needed.
+#elif defined(OPENSSL_64_BIT)
+  uint64_t a0 = aes_nohw_compact_word(out[0]);
+  uint64_t a1 = aes_nohw_compact_word(out[1]);
+  out[0] = (a0 & UINT64_C(0x00000000ffffffff)) | (a1 << 32);
+  out[1] = (a1 & UINT64_C(0xffffffff00000000)) | (a0 >> 32);
+#else
+  uint32_t a0 = aes_nohw_compact_word(out[0]);
+  uint32_t a1 = aes_nohw_compact_word(out[1]);
+  uint32_t a2 = aes_nohw_compact_word(out[2]);
+  uint32_t a3 = aes_nohw_compact_word(out[3]);
+  // Note clang, when building for ARM Thumb2, will sometimes miscompile
+  // expressions such as (a0 & 0x0000ff00) << 8, particularly when building
+  // without optimizations. This bug was introduced in
+  // https://reviews.llvm.org/rL340261 and fixed in
+  // https://reviews.llvm.org/rL351310. The following is written to avoid this.
+  out[0] = aes_nohw_word_from_bytes(a0, a1, a2, a3);
+  out[1] = aes_nohw_word_from_bytes(a0 >> 8, a1 >> 8, a2 >> 8, a3 >> 8);
+  out[2] = aes_nohw_word_from_bytes(a0 >> 16, a1 >> 16, a2 >> 16, a3 >> 16);
+  out[3] = aes_nohw_word_from_bytes(a0 >> 24, a1 >> 24, a2 >> 24, a3 >> 24);
+#endif
+}
+
+static inline void aes_nohw_uncompact_block(
+    uint8_t out[16], const aes_word_t in[AES_NOHW_BLOCK_WORDS]) {
+#if defined(OPENSSL_SSE2)
+  memcpy(out, in, 16);  // No conversions needed.
+#elif defined(OPENSSL_64_BIT)
+  uint64_t a0 = in[0];
+  uint64_t a1 = in[1];
+  uint64_t b0 =
+      aes_nohw_uncompact_word((a0 & UINT64_C(0x00000000ffffffff)) | (a1 << 32));
+  uint64_t b1 =
+      aes_nohw_uncompact_word((a1 & UINT64_C(0xffffffff00000000)) | (a0 >> 32));
+  memcpy(out, &b0, 8);
+  memcpy(out + 8, &b1, 8);
+#else
+  uint32_t a0 = in[0];
+  uint32_t a1 = in[1];
+  uint32_t a2 = in[2];
+  uint32_t a3 = in[3];
+  // Note clang, when building for ARM Thumb2, will sometimes miscompile
+  // expressions such as (a0 & 0x0000ff00) << 8, particularly when building
+  // without optimizations. This bug was introduced in
+  // https://reviews.llvm.org/rL340261 and fixed in
+  // https://reviews.llvm.org/rL351310. The following is written to avoid this.
+  uint32_t b0 = aes_nohw_word_from_bytes(a0, a1, a2, a3);
+  uint32_t b1 = aes_nohw_word_from_bytes(a0 >> 8, a1 >> 8, a2 >> 8, a3 >> 8);
+  uint32_t b2 =
+      aes_nohw_word_from_bytes(a0 >> 16, a1 >> 16, a2 >> 16, a3 >> 16);
+  uint32_t b3 =
+      aes_nohw_word_from_bytes(a0 >> 24, a1 >> 24, a2 >> 24, a3 >> 24);
+  b0 = aes_nohw_uncompact_word(b0);
+  b1 = aes_nohw_uncompact_word(b1);
+  b2 = aes_nohw_uncompact_word(b2);
+  b3 = aes_nohw_uncompact_word(b3);
+  memcpy(out, &b0, 4);
+  memcpy(out + 4, &b1, 4);
+  memcpy(out + 8, &b2, 4);
+  memcpy(out + 12, &b3, 4);
+#endif
+}
+
+// aes_nohw_swap_bits is a variation on a delta swap. It swaps the bits in
+// |*a & (mask << shift)| with the bits in |*b & mask|. |mask| and
+// |mask << shift| must not overlap. |mask| is specified as a |uint32_t|, but it
+// is repeated to the full width of |aes_word_t|.
+#if defined(OPENSSL_SSE2)
+// This must be a macro because |_mm_srli_epi32| and |_mm_slli_epi32| require
+// constant shift values.
+#define aes_nohw_swap_bits(/*__m128i* */ a, /*__m128i* */ b,              \
+                           /* uint32_t */ mask, /* const */ shift)        \
+  do {                                                                    \
+    __m128i swap =                                                        \
+        _mm_and_si128(_mm_xor_si128(_mm_srli_epi32(*(a), (shift)), *(b)), \
+                      _mm_set_epi32((mask), (mask), (mask), (mask)));     \
+    *(a) = _mm_xor_si128(*(a), _mm_slli_epi32(swap, (shift)));            \
+    *(b) = _mm_xor_si128(*(b), swap);                                     \
+                                                                          \
+  } while (0)
+#else
+static inline void aes_nohw_swap_bits(aes_word_t *a, aes_word_t *b,
+                                      uint32_t mask, aes_word_t shift) {
+#if defined(OPENSSL_64_BIT)
+  aes_word_t mask_w = (((uint64_t)mask) << 32) | mask;
+#else
+  aes_word_t mask_w = mask;
+#endif
+  // This is a variation on a delta swap.
+  aes_word_t swap = ((*a >> shift) ^ *b) & mask_w;
+  *a ^= swap << shift;
+  *b ^= swap;
+}
+#endif  // OPENSSL_SSE2
+
+// aes_nohw_transpose converts |batch| to and from bitsliced form. It divides
+// the 8 × word_size bits into AES_NOHW_BATCH_SIZE × AES_NOHW_BATCH_SIZE squares
+// and transposes each square.
+static void aes_nohw_transpose(AES_NOHW_BATCH *batch) {
+  // Swap bits with index 0 and 1 mod 2 (0x55 = 0b01010101).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[1], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[2], &batch->w[3], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[4], &batch->w[5], 0x55555555, 1);
+  aes_nohw_swap_bits(&batch->w[6], &batch->w[7], 0x55555555, 1);
+
+#if AES_NOHW_BATCH_SIZE >= 4
+  // Swap bits with index 0-1 and 2-3 mod 4 (0x33 = 0b00110011).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[2], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[1], &batch->w[3], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[4], &batch->w[6], 0x33333333, 2);
+  aes_nohw_swap_bits(&batch->w[5], &batch->w[7], 0x33333333, 2);
+#endif
+
+#if AES_NOHW_BATCH_SIZE >= 8
+  // Swap bits with index 0-3 and 4-7 mod 8 (0x0f = 0b00001111).
+  aes_nohw_swap_bits(&batch->w[0], &batch->w[4], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[1], &batch->w[5], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[2], &batch->w[6], 0x0f0f0f0f, 4);
+  aes_nohw_swap_bits(&batch->w[3], &batch->w[7], 0x0f0f0f0f, 4);
+#endif
+}
+
+// aes_nohw_to_batch initializes |out| with the |num_blocks| blocks from |in|.
+// |num_blocks| must be at most |AES_NOHW_BATCH|.
+static void aes_nohw_to_batch(AES_NOHW_BATCH *out, const uint8_t *in,
+                              size_t num_blocks) {
+  // Don't leave unused blocks unitialized.
+  memset(out, 0, sizeof(AES_NOHW_BATCH));
+  assert(num_blocks <= AES_NOHW_BATCH_SIZE);
+  for (size_t i = 0; i < num_blocks; i++) {
+    aes_word_t block[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_compact_block(block, in + 16 * i);
+    aes_nohw_batch_set(out, block, i);
+  }
+
+  aes_nohw_transpose(out);
+}
+
+// aes_nohw_to_batch writes the first |num_blocks| blocks in |batch| to |out|.
+// |num_blocks| must be at most |AES_NOHW_BATCH|.
+static void aes_nohw_from_batch(uint8_t *out, size_t num_blocks,
+                                const AES_NOHW_BATCH *batch) {
+  AES_NOHW_BATCH copy = *batch;
+  aes_nohw_transpose(&copy);
+
+  assert(num_blocks <= AES_NOHW_BATCH_SIZE);
+  for (size_t i = 0; i < num_blocks; i++) {
+    aes_word_t block[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_batch_get(&copy, block, i);
+    aes_nohw_uncompact_block(out + 16 * i, block);
+  }
+}
+
+
+// AES round steps.
+
+static void aes_nohw_add_round_key(AES_NOHW_BATCH *batch,
+                                   const AES_NOHW_BATCH *key) {
+  for (size_t i = 0; i < 8; i++) {
+    batch->w[i] = aes_nohw_xor(batch->w[i], key->w[i]);
+  }
+}
+
+static void aes_nohw_sub_bytes(AES_NOHW_BATCH *batch) {
+  // See https://eprint.iacr.org/2009/191.pdf, Appendix C.
+  aes_word_t x0 = batch->w[7];
+  aes_word_t x1 = batch->w[6];
+  aes_word_t x2 = batch->w[5];
+  aes_word_t x3 = batch->w[4];
+  aes_word_t x4 = batch->w[3];
+  aes_word_t x5 = batch->w[2];
+  aes_word_t x6 = batch->w[1];
+  aes_word_t x7 = batch->w[0];
+
+  // Figure 2, the top linear transformation.
+  aes_word_t y14 = aes_nohw_xor(x3, x5);
+  aes_word_t y13 = aes_nohw_xor(x0, x6);
+  aes_word_t y9 = aes_nohw_xor(x0, x3);
+  aes_word_t y8 = aes_nohw_xor(x0, x5);
+  aes_word_t t0 = aes_nohw_xor(x1, x2);
+  aes_word_t y1 = aes_nohw_xor(t0, x7);
+  aes_word_t y4 = aes_nohw_xor(y1, x3);
+  aes_word_t y12 = aes_nohw_xor(y13, y14);
+  aes_word_t y2 = aes_nohw_xor(y1, x0);
+  aes_word_t y5 = aes_nohw_xor(y1, x6);
+  aes_word_t y3 = aes_nohw_xor(y5, y8);
+  aes_word_t t1 = aes_nohw_xor(x4, y12);
+  aes_word_t y15 = aes_nohw_xor(t1, x5);
+  aes_word_t y20 = aes_nohw_xor(t1, x1);
+  aes_word_t y6 = aes_nohw_xor(y15, x7);
+  aes_word_t y10 = aes_nohw_xor(y15, t0);
+  aes_word_t y11 = aes_nohw_xor(y20, y9);
+  aes_word_t y7 = aes_nohw_xor(x7, y11);
+  aes_word_t y17 = aes_nohw_xor(y10, y11);
+  aes_word_t y19 = aes_nohw_xor(y10, y8);
+  aes_word_t y16 = aes_nohw_xor(t0, y11);
+  aes_word_t y21 = aes_nohw_xor(y13, y16);
+  aes_word_t y18 = aes_nohw_xor(x0, y16);
+
+  // Figure 3, the middle non-linear section.
+  aes_word_t t2 = aes_nohw_and(y12, y15);
+  aes_word_t t3 = aes_nohw_and(y3, y6);
+  aes_word_t t4 = aes_nohw_xor(t3, t2);
+  aes_word_t t5 = aes_nohw_and(y4, x7);
+  aes_word_t t6 = aes_nohw_xor(t5, t2);
+  aes_word_t t7 = aes_nohw_and(y13, y16);
+  aes_word_t t8 = aes_nohw_and(y5, y1);
+  aes_word_t t9 = aes_nohw_xor(t8, t7);
+  aes_word_t t10 = aes_nohw_and(y2, y7);
+  aes_word_t t11 = aes_nohw_xor(t10, t7);
+  aes_word_t t12 = aes_nohw_and(y9, y11);
+  aes_word_t t13 = aes_nohw_and(y14, y17);
+  aes_word_t t14 = aes_nohw_xor(t13, t12);
+  aes_word_t t15 = aes_nohw_and(y8, y10);
+  aes_word_t t16 = aes_nohw_xor(t15, t12);
+  aes_word_t t17 = aes_nohw_xor(t4, t14);
+  aes_word_t t18 = aes_nohw_xor(t6, t16);
+  aes_word_t t19 = aes_nohw_xor(t9, t14);
+  aes_word_t t20 = aes_nohw_xor(t11, t16);
+  aes_word_t t21 = aes_nohw_xor(t17, y20);
+  aes_word_t t22 = aes_nohw_xor(t18, y19);
+  aes_word_t t23 = aes_nohw_xor(t19, y21);
+  aes_word_t t24 = aes_nohw_xor(t20, y18);
+  aes_word_t t25 = aes_nohw_xor(t21, t22);
+  aes_word_t t26 = aes_nohw_and(t21, t23);
+  aes_word_t t27 = aes_nohw_xor(t24, t26);
+  aes_word_t t28 = aes_nohw_and(t25, t27);
+  aes_word_t t29 = aes_nohw_xor(t28, t22);
+  aes_word_t t30 = aes_nohw_xor(t23, t24);
+  aes_word_t t31 = aes_nohw_xor(t22, t26);
+  aes_word_t t32 = aes_nohw_and(t31, t30);
+  aes_word_t t33 = aes_nohw_xor(t32, t24);
+  aes_word_t t34 = aes_nohw_xor(t23, t33);
+  aes_word_t t35 = aes_nohw_xor(t27, t33);
+  aes_word_t t36 = aes_nohw_and(t24, t35);
+  aes_word_t t37 = aes_nohw_xor(t36, t34);
+  aes_word_t t38 = aes_nohw_xor(t27, t36);
+  aes_word_t t39 = aes_nohw_and(t29, t38);
+  aes_word_t t40 = aes_nohw_xor(t25, t39);
+  aes_word_t t41 = aes_nohw_xor(t40, t37);
+  aes_word_t t42 = aes_nohw_xor(t29, t33);
+  aes_word_t t43 = aes_nohw_xor(t29, t40);
+  aes_word_t t44 = aes_nohw_xor(t33, t37);
+  aes_word_t t45 = aes_nohw_xor(t42, t41);
+  aes_word_t z0 = aes_nohw_and(t44, y15);
+  aes_word_t z1 = aes_nohw_and(t37, y6);
+  aes_word_t z2 = aes_nohw_and(t33, x7);
+  aes_word_t z3 = aes_nohw_and(t43, y16);
+  aes_word_t z4 = aes_nohw_and(t40, y1);
+  aes_word_t z5 = aes_nohw_and(t29, y7);
+  aes_word_t z6 = aes_nohw_and(t42, y11);
+  aes_word_t z7 = aes_nohw_and(t45, y17);
+  aes_word_t z8 = aes_nohw_and(t41, y10);
+  aes_word_t z9 = aes_nohw_and(t44, y12);
+  aes_word_t z10 = aes_nohw_and(t37, y3);
+  aes_word_t z11 = aes_nohw_and(t33, y4);
+  aes_word_t z12 = aes_nohw_and(t43, y13);
+  aes_word_t z13 = aes_nohw_and(t40, y5);
+  aes_word_t z14 = aes_nohw_and(t29, y2);
+  aes_word_t z15 = aes_nohw_and(t42, y9);
+  aes_word_t z16 = aes_nohw_and(t45, y14);
+  aes_word_t z17 = aes_nohw_and(t41, y8);
+
+  // Figure 4, bottom linear transformation.
+  aes_word_t t46 = aes_nohw_xor(z15, z16);
+  aes_word_t t47 = aes_nohw_xor(z10, z11);
+  aes_word_t t48 = aes_nohw_xor(z5, z13);
+  aes_word_t t49 = aes_nohw_xor(z9, z10);
+  aes_word_t t50 = aes_nohw_xor(z2, z12);
+  aes_word_t t51 = aes_nohw_xor(z2, z5);
+  aes_word_t t52 = aes_nohw_xor(z7, z8);
+  aes_word_t t53 = aes_nohw_xor(z0, z3);
+  aes_word_t t54 = aes_nohw_xor(z6, z7);
+  aes_word_t t55 = aes_nohw_xor(z16, z17);
+  aes_word_t t56 = aes_nohw_xor(z12, t48);
+  aes_word_t t57 = aes_nohw_xor(t50, t53);
+  aes_word_t t58 = aes_nohw_xor(z4, t46);
+  aes_word_t t59 = aes_nohw_xor(z3, t54);
+  aes_word_t t60 = aes_nohw_xor(t46, t57);
+  aes_word_t t61 = aes_nohw_xor(z14, t57);
+  aes_word_t t62 = aes_nohw_xor(t52, t58);
+  aes_word_t t63 = aes_nohw_xor(t49, t58);
+  aes_word_t t64 = aes_nohw_xor(z4, t59);
+  aes_word_t t65 = aes_nohw_xor(t61, t62);
+  aes_word_t t66 = aes_nohw_xor(z1, t63);
+  aes_word_t s0 = aes_nohw_xor(t59, t63);
+  aes_word_t s6 = aes_nohw_xor(t56, aes_nohw_not(t62));
+  aes_word_t s7 = aes_nohw_xor(t48, aes_nohw_not(t60));
+  aes_word_t t67 = aes_nohw_xor(t64, t65);
+  aes_word_t s3 = aes_nohw_xor(t53, t66);
+  aes_word_t s4 = aes_nohw_xor(t51, t66);
+  aes_word_t s5 = aes_nohw_xor(t47, t65);
+  aes_word_t s1 = aes_nohw_xor(t64, aes_nohw_not(s3));
+  aes_word_t s2 = aes_nohw_xor(t55, aes_nohw_not(t67));
+
+  batch->w[0] = s7;
+  batch->w[1] = s6;
+  batch->w[2] = s5;
+  batch->w[3] = s4;
+  batch->w[4] = s3;
+  batch->w[5] = s2;
+  batch->w[6] = s1;
+  batch->w[7] = s0;
+}
+
+// aes_nohw_sub_bytes_inv_affine inverts the affine transform portion of the AES
+// S-box, defined in FIPS PUB 197, section 5.1.1, step 2.
+static void aes_nohw_sub_bytes_inv_affine(AES_NOHW_BATCH *batch) {
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  // Apply the circulant [0 0 1 0 0 1 0 1]. This is the inverse of the circulant
+  // [1 0 0 0 1 1 1 1].
+  aes_word_t b0 = aes_nohw_xor(a2, aes_nohw_xor(a5, a7));
+  aes_word_t b1 = aes_nohw_xor(a3, aes_nohw_xor(a6, a0));
+  aes_word_t b2 = aes_nohw_xor(a4, aes_nohw_xor(a7, a1));
+  aes_word_t b3 = aes_nohw_xor(a5, aes_nohw_xor(a0, a2));
+  aes_word_t b4 = aes_nohw_xor(a6, aes_nohw_xor(a1, a3));
+  aes_word_t b5 = aes_nohw_xor(a7, aes_nohw_xor(a2, a4));
+  aes_word_t b6 = aes_nohw_xor(a0, aes_nohw_xor(a3, a5));
+  aes_word_t b7 = aes_nohw_xor(a1, aes_nohw_xor(a4, a6));
+
+  // XOR 0x05. Equivalently, we could XOR 0x63 before applying the circulant,
+  // but 0x05 has lower Hamming weight. (0x05 is the circulant applied to 0x63.)
+  batch->w[0] = aes_nohw_not(b0);
+  batch->w[1] = b1;
+  batch->w[2] = aes_nohw_not(b2);
+  batch->w[3] = b3;
+  batch->w[4] = b4;
+  batch->w[5] = b5;
+  batch->w[6] = b6;
+  batch->w[7] = b7;
+}
+
+static void aes_nohw_inv_sub_bytes(AES_NOHW_BATCH *batch) {
+  // We implement the inverse S-box using the forwards implementation with the
+  // technique described in https://www.bearssl.org/constanttime.html#aes.
+  //
+  // The forwards S-box inverts its input and applies an affine transformation:
+  // S(x) = A(Inv(x)). Thus Inv(x) = InvA(S(x)). The inverse S-box is then:
+  //
+  //   InvS(x) = Inv(InvA(x)).
+  //           = InvA(S(InvA(x)))
+  aes_nohw_sub_bytes_inv_affine(batch);
+  aes_nohw_sub_bytes(batch);
+  aes_nohw_sub_bytes_inv_affine(batch);
+}
+
+// aes_nohw_rotate_cols_right returns |v| with the columns in each row rotated
+// to the right by |n|. This is a macro because |aes_nohw_shift_*| require
+// constant shift counts in the SSE2 implementation.
+#define aes_nohw_rotate_cols_right(/* aes_word_t */ v, /* const */ n) \
+  (aes_nohw_or(aes_nohw_shift_right((v), (n)*4),                      \
+               aes_nohw_shift_left((v), 16 - (n)*4)))
+
+static void aes_nohw_shift_rows(AES_NOHW_BATCH *batch) {
+  for (size_t i = 0; i < 8; i++) {
+    aes_word_t row0 = aes_nohw_and(batch->w[i], AES_NOHW_ROW0_MASK);
+    aes_word_t row1 = aes_nohw_and(batch->w[i], AES_NOHW_ROW1_MASK);
+    aes_word_t row2 = aes_nohw_and(batch->w[i], AES_NOHW_ROW2_MASK);
+    aes_word_t row3 = aes_nohw_and(batch->w[i], AES_NOHW_ROW3_MASK);
+    row1 = aes_nohw_rotate_cols_right(row1, 1);
+    row2 = aes_nohw_rotate_cols_right(row2, 2);
+    row3 = aes_nohw_rotate_cols_right(row3, 3);
+    batch->w[i] = aes_nohw_or(aes_nohw_or(row0, row1), aes_nohw_or(row2, row3));
+  }
+}
+
+static void aes_nohw_inv_shift_rows(AES_NOHW_BATCH *batch) {
+  for (size_t i = 0; i < 8; i++) {
+    aes_word_t row0 = aes_nohw_and(batch->w[i], AES_NOHW_ROW0_MASK);
+    aes_word_t row1 = aes_nohw_and(batch->w[i], AES_NOHW_ROW1_MASK);
+    aes_word_t row2 = aes_nohw_and(batch->w[i], AES_NOHW_ROW2_MASK);
+    aes_word_t row3 = aes_nohw_and(batch->w[i], AES_NOHW_ROW3_MASK);
+    row1 = aes_nohw_rotate_cols_right(row1, 3);
+    row2 = aes_nohw_rotate_cols_right(row2, 2);
+    row3 = aes_nohw_rotate_cols_right(row3, 1);
+    batch->w[i] = aes_nohw_or(aes_nohw_or(row0, row1), aes_nohw_or(row2, row3));
+  }
+}
+
+// aes_nohw_rotate_rows_down returns |v| with the rows in each column rotated
+// down by one.
+static inline aes_word_t aes_nohw_rotate_rows_down(aes_word_t v) {
+#if defined(OPENSSL_SSE2)
+  return _mm_or_si128(_mm_srli_epi32(v, 8), _mm_slli_epi32(v, 24));
+#elif defined(OPENSSL_64_BIT)
+  return ((v >> 4) & UINT64_C(0x0fff0fff0fff0fff)) |
+         ((v << 12) & UINT64_C(0xf000f000f000f000));
+#else
+  return ((v >> 2) & 0x3f3f3f3f) | ((v << 6) & 0xc0c0c0c0);
+#endif
+}
+
+// aes_nohw_rotate_rows_twice returns |v| with the rows in each column rotated
+// by two.
+static inline aes_word_t aes_nohw_rotate_rows_twice(aes_word_t v) {
+#if defined(OPENSSL_SSE2)
+  return _mm_or_si128(_mm_srli_epi32(v, 16), _mm_slli_epi32(v, 16));
+#elif defined(OPENSSL_64_BIT)
+  return ((v >> 8) & UINT64_C(0x00ff00ff00ff00ff)) |
+         ((v << 8) & UINT64_C(0xff00ff00ff00ff00));
+#else
+  return ((v >> 4) & 0x0f0f0f0f) | ((v << 4) & 0xf0f0f0f0);
+#endif
+}
+
+static void aes_nohw_mix_columns(AES_NOHW_BATCH *batch) {
+  // See https://eprint.iacr.org/2009/129.pdf, section 4.4 and appendix A.
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  aes_word_t r0 = aes_nohw_rotate_rows_down(a0);
+  aes_word_t a0_r0 = aes_nohw_xor(a0, r0);
+  aes_word_t r1 = aes_nohw_rotate_rows_down(a1);
+  aes_word_t a1_r1 = aes_nohw_xor(a1, r1);
+  aes_word_t r2 = aes_nohw_rotate_rows_down(a2);
+  aes_word_t a2_r2 = aes_nohw_xor(a2, r2);
+  aes_word_t r3 = aes_nohw_rotate_rows_down(a3);
+  aes_word_t a3_r3 = aes_nohw_xor(a3, r3);
+  aes_word_t r4 = aes_nohw_rotate_rows_down(a4);
+  aes_word_t a4_r4 = aes_nohw_xor(a4, r4);
+  aes_word_t r5 = aes_nohw_rotate_rows_down(a5);
+  aes_word_t a5_r5 = aes_nohw_xor(a5, r5);
+  aes_word_t r6 = aes_nohw_rotate_rows_down(a6);
+  aes_word_t a6_r6 = aes_nohw_xor(a6, r6);
+  aes_word_t r7 = aes_nohw_rotate_rows_down(a7);
+  aes_word_t a7_r7 = aes_nohw_xor(a7, r7);
+
+  batch->w[0] =
+      aes_nohw_xor(aes_nohw_xor(a7_r7, r0), aes_nohw_rotate_rows_twice(a0_r0));
+  batch->w[1] =
+      aes_nohw_xor(aes_nohw_xor(a0_r0, a7_r7),
+                   aes_nohw_xor(r1, aes_nohw_rotate_rows_twice(a1_r1)));
+  batch->w[2] =
+      aes_nohw_xor(aes_nohw_xor(a1_r1, r2), aes_nohw_rotate_rows_twice(a2_r2));
+  batch->w[3] =
+      aes_nohw_xor(aes_nohw_xor(a2_r2, a7_r7),
+                   aes_nohw_xor(r3, aes_nohw_rotate_rows_twice(a3_r3)));
+  batch->w[4] =
+      aes_nohw_xor(aes_nohw_xor(a3_r3, a7_r7),
+                   aes_nohw_xor(r4, aes_nohw_rotate_rows_twice(a4_r4)));
+  batch->w[5] =
+      aes_nohw_xor(aes_nohw_xor(a4_r4, r5), aes_nohw_rotate_rows_twice(a5_r5));
+  batch->w[6] =
+      aes_nohw_xor(aes_nohw_xor(a5_r5, r6), aes_nohw_rotate_rows_twice(a6_r6));
+  batch->w[7] =
+      aes_nohw_xor(aes_nohw_xor(a6_r6, r7), aes_nohw_rotate_rows_twice(a7_r7));
+}
+
+static void aes_nohw_inv_mix_columns(AES_NOHW_BATCH *batch) {
+  aes_word_t a0 = batch->w[0];
+  aes_word_t a1 = batch->w[1];
+  aes_word_t a2 = batch->w[2];
+  aes_word_t a3 = batch->w[3];
+  aes_word_t a4 = batch->w[4];
+  aes_word_t a5 = batch->w[5];
+  aes_word_t a6 = batch->w[6];
+  aes_word_t a7 = batch->w[7];
+
+  // bsaes-x86_64.pl describes the following decomposition of the inverse
+  // MixColumns matrix, credited to Jussi Kivilinna. This gives a much simpler
+  // multiplication.
+  //
+  // | 0e 0b 0d 09 |   | 02 03 01 01 |   | 05 00 04 00 |
+  // | 09 0e 0b 0d | = | 01 02 03 01 | x | 00 05 00 04 |
+  // | 0d 09 0e 0b |   | 01 01 02 03 |   | 04 00 05 00 |
+  // | 0b 0d 09 0e |   | 03 01 01 02 |   | 00 04 00 05 |
+  //
+  // First, apply the [5 0 4 0] matrix. Multiplying by 4 in F_(2^8) is described
+  // by the following bit equations:
+  //
+  //   b0 = a6
+  //   b1 = a6 ^ a7
+  //   b2 = a0 ^ a7
+  //   b3 = a1 ^ a6
+  //   b4 = a2 ^ a6 ^ a7
+  //   b5 = a3 ^ a7
+  //   b6 = a4
+  //   b7 = a5
+  //
+  // Each coefficient is given by:
+  //
+  //   b_ij = 05·a_ij ⊕ 04·a_i(j+2) = 04·(a_ij ⊕ a_i(j+2)) ⊕ a_ij
+  //
+  // We combine the two equations below. Note a_i(j+2) is a row rotation.
+  aes_word_t a0_r0 = aes_nohw_xor(a0, aes_nohw_rotate_rows_twice(a0));
+  aes_word_t a1_r1 = aes_nohw_xor(a1, aes_nohw_rotate_rows_twice(a1));
+  aes_word_t a2_r2 = aes_nohw_xor(a2, aes_nohw_rotate_rows_twice(a2));
+  aes_word_t a3_r3 = aes_nohw_xor(a3, aes_nohw_rotate_rows_twice(a3));
+  aes_word_t a4_r4 = aes_nohw_xor(a4, aes_nohw_rotate_rows_twice(a4));
+  aes_word_t a5_r5 = aes_nohw_xor(a5, aes_nohw_rotate_rows_twice(a5));
+  aes_word_t a6_r6 = aes_nohw_xor(a6, aes_nohw_rotate_rows_twice(a6));
+  aes_word_t a7_r7 = aes_nohw_xor(a7, aes_nohw_rotate_rows_twice(a7));
+
+  batch->w[0] = aes_nohw_xor(a0, a6_r6);
+  batch->w[1] = aes_nohw_xor(a1, aes_nohw_xor(a6_r6, a7_r7));
+  batch->w[2] = aes_nohw_xor(a2, aes_nohw_xor(a0_r0, a7_r7));
+  batch->w[3] = aes_nohw_xor(a3, aes_nohw_xor(a1_r1, a6_r6));
+  batch->w[4] =
+      aes_nohw_xor(aes_nohw_xor(a4, a2_r2), aes_nohw_xor(a6_r6, a7_r7));
+  batch->w[5] = aes_nohw_xor(a5, aes_nohw_xor(a3_r3, a7_r7));
+  batch->w[6] = aes_nohw_xor(a6, a4_r4);
+  batch->w[7] = aes_nohw_xor(a7, a5_r5);
+
+  // Apply the [02 03 01 01] matrix, which is just MixColumns.
+  aes_nohw_mix_columns(batch);
+}
+
+static void aes_nohw_encrypt_batch(const AES_NOHW_SCHEDULE *key,
+                                   size_t num_rounds, AES_NOHW_BATCH *batch) {
+  aes_nohw_add_round_key(batch, &key->keys[0]);
+  for (size_t i = 1; i < num_rounds; i++) {
+    aes_nohw_sub_bytes(batch);
+    aes_nohw_shift_rows(batch);
+    aes_nohw_mix_columns(batch);
+    aes_nohw_add_round_key(batch, &key->keys[i]);
+  }
+  aes_nohw_sub_bytes(batch);
+  aes_nohw_shift_rows(batch);
+  aes_nohw_add_round_key(batch, &key->keys[num_rounds]);
+}
+
+static void aes_nohw_decrypt_batch(const AES_NOHW_SCHEDULE *key,
+                                   size_t num_rounds, AES_NOHW_BATCH *batch) {
+  aes_nohw_add_round_key(batch, &key->keys[num_rounds]);
+  aes_nohw_inv_shift_rows(batch);
+  aes_nohw_inv_sub_bytes(batch);
+  for (size_t i = num_rounds - 1; i > 0; i--) {
+    aes_nohw_add_round_key(batch, &key->keys[i]);
+    aes_nohw_inv_mix_columns(batch);
+    aes_nohw_inv_shift_rows(batch);
+    aes_nohw_inv_sub_bytes(batch);
+  }
+  aes_nohw_add_round_key(batch, &key->keys[0]);
+}
+
+
+// Key schedule.
+
+static void aes_nohw_expand_round_keys(AES_NOHW_SCHEDULE *out,
+                                       const AES_KEY *key) {
+  for (size_t i = 0; i <= key->rounds; i++) {
+    // Copy the round key into each block in the batch.
+    for (size_t j = 0; j < AES_NOHW_BATCH_SIZE; j++) {
+      aes_word_t tmp[AES_NOHW_BLOCK_WORDS];
+      memcpy(tmp, key->rd_key + 4 * i, 16);
+      aes_nohw_batch_set(&out->keys[i], tmp, j);
+    }
+    aes_nohw_transpose(&out->keys[i]);
+  }
+}
+
+static const uint8_t aes_nohw_rcon[10] = {0x01, 0x02, 0x04, 0x08, 0x10,
+                                          0x20, 0x40, 0x80, 0x1b, 0x36};
+
+// aes_nohw_rcon_slice returns the |i|th group of |AES_NOHW_BATCH_SIZE| bits in
+// |rcon|, stored in a |aes_word_t|.
+static inline aes_word_t aes_nohw_rcon_slice(uint8_t rcon, size_t i) {
+  rcon = (rcon >> (i * AES_NOHW_BATCH_SIZE)) & ((1 << AES_NOHW_BATCH_SIZE) - 1);
+#if defined(OPENSSL_SSE2)
+  return _mm_set_epi32(0, 0, 0, rcon);
+#else
+  return ((aes_word_t)rcon);
+#endif
+}
+
+static void aes_nohw_sub_block(aes_word_t out[AES_NOHW_BLOCK_WORDS],
+                               const aes_word_t in[AES_NOHW_BLOCK_WORDS]) {
+  AES_NOHW_BATCH batch;
+  memset(&batch, 0, sizeof(batch));
+  aes_nohw_batch_set(&batch, in, 0);
+  aes_nohw_transpose(&batch);
+  aes_nohw_sub_bytes(&batch);
+  aes_nohw_transpose(&batch);
+  aes_nohw_batch_get(&batch, out, 0);
+}
+
+static void aes_nohw_setup_key_128(AES_KEY *key, const uint8_t in[16]) {
+  key->rounds = 10;
+
+  aes_word_t block[AES_NOHW_BLOCK_WORDS];
+  aes_nohw_compact_block(block, in);
+  memcpy(key->rd_key, block, 16);
+
+  for (size_t i = 1; i <= 10; i++) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block);
+    uint8_t rcon = aes_nohw_rcon[i - 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate |rcon| and the transformed word into the first word.
+      block[j] = aes_nohw_xor(block[j], aes_nohw_rcon_slice(rcon, j));
+      block[j] = aes_nohw_xor(
+          block[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words. Note this is reordered from the usual
+      // formulation to avoid needing masks.
+      aes_word_t v = block[j];
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 4));
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 8));
+      block[j] = aes_nohw_xor(block[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * i, block, 16);
+  }
+}
+
+static void aes_nohw_setup_key_192(AES_KEY *key, const uint8_t in[24]) {
+  key->rounds = 12;
+
+  aes_word_t storage1[AES_NOHW_BLOCK_WORDS], storage2[AES_NOHW_BLOCK_WORDS];
+  aes_word_t *block1 = storage1, *block2 = storage2;
+
+  // AES-192's key schedule is complex because each key schedule iteration
+  // produces six words, but we compute on blocks and each block is four words.
+  // We maintain a sliding window of two blocks, filled to 1.5 blocks at a time.
+  // We loop below every three blocks or two key schedule iterations.
+  //
+  // On entry to the loop, |block1| and the first half of |block2| contain the
+  // previous key schedule iteration. |block1| has been written to |key|, but
+  // |block2| has not as it is incomplete.
+  aes_nohw_compact_block(block1, in);
+  memcpy(key->rd_key, block1, 16);
+
+  uint8_t half_block[16] = {0};
+  memcpy(half_block, in + 16, 8);
+  aes_nohw_compact_block(block2, half_block);
+
+  for (size_t i = 0; i < 4; i++) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block2);
+    uint8_t rcon = aes_nohw_rcon[2 * i];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Compute the first two words of the next key schedule iteration, which
+      // go in the second half of |block2|. The first two words of the previous
+      // iteration are in the first half of |block1|. Apply |rcon| here too
+      // because the shifts match.
+      block2[j] = aes_nohw_or(
+          block2[j],
+          aes_nohw_shift_left(
+              aes_nohw_xor(block1[j], aes_nohw_rcon_slice(rcon, j)), 8));
+      // Incorporate the transformed word and propagate. Note the last word of
+      // the previous iteration corresponds to the second word of |copy|. This
+      // is incorporated into the first word of the next iteration, or the third
+      // word of |block2|.
+      block2[j] = aes_nohw_xor(
+          block2[j], aes_nohw_and(aes_nohw_shift_left(
+                                      aes_nohw_rotate_rows_down(sub[j]), 4),
+                                  AES_NOHW_COL2_MASK));
+      block2[j] = aes_nohw_xor(
+          block2[j],
+          aes_nohw_and(aes_nohw_shift_left(block2[j], 4), AES_NOHW_COL3_MASK));
+
+      // Compute the remaining four words, which fill |block1|. Begin by moving
+      // the corresponding words of the previous iteration: the second half of
+      // |block1| and the first half of |block2|.
+      block1[j] = aes_nohw_shift_right(block1[j], 8);
+      block1[j] = aes_nohw_or(block1[j], aes_nohw_shift_left(block2[j], 8));
+      // Incorporate the second word, computed previously in |block2|, and
+      // propagate.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_right(block2[j], 12));
+      aes_word_t v = block1[j];
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 4));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 8));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 12));
+    }
+
+    // This completes two round keys. Note half of |block2| was computed in the
+    // previous loop iteration but was not yet output.
+    memcpy(key->rd_key + 4 * (3 * i + 1), block2, 16);
+    memcpy(key->rd_key + 4 * (3 * i + 2), block1, 16);
+
+    aes_nohw_sub_block(sub, block1);
+    rcon = aes_nohw_rcon[2 * i + 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Compute the first four words of the next key schedule iteration in
+      // |block2|. Begin by moving the corresponding words of the previous
+      // iteration: the second half of |block2| and the first half of |block1|.
+      block2[j] = aes_nohw_shift_right(block2[j], 8);
+      block2[j] = aes_nohw_or(block2[j], aes_nohw_shift_left(block1[j], 8));
+      // Incorporate rcon and the transformed word. Note the last word of the
+      // previous iteration corresponds to the last word of |copy|.
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_rcon_slice(rcon, j));
+      block2[j] = aes_nohw_xor(
+          block2[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block2[j];
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 4));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 8));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 12));
+
+      // Compute the last two words, which go in the first half of |block1|. The
+      // last two words of the previous iteration are in the second half of
+      // |block1|.
+      block1[j] = aes_nohw_shift_right(block1[j], 8);
+      // Propagate blocks and mask off the excess.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_right(block2[j], 12));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(block1[j], 4));
+      block1[j] = aes_nohw_and(block1[j], AES_NOHW_COL01_MASK);
+    }
+
+    // |block2| has a complete round key. |block1| will be completed in the next
+    // iteration.
+    memcpy(key->rd_key + 4 * (3 * i + 3), block2, 16);
+
+    // Swap blocks to restore the invariant.
+    aes_word_t *tmp = block1;
+    block1 = block2;
+    block2 = tmp;
+  }
+}
+
+static void aes_nohw_setup_key_256(AES_KEY *key, const uint8_t in[32]) {
+  key->rounds = 14;
+
+  // Each key schedule iteration produces two round keys.
+  aes_word_t block1[AES_NOHW_BLOCK_WORDS], block2[AES_NOHW_BLOCK_WORDS];
+  aes_nohw_compact_block(block1, in);
+  memcpy(key->rd_key, block1, 16);
+
+  aes_nohw_compact_block(block2, in + 16);
+  memcpy(key->rd_key + 4, block2, 16);
+
+  for (size_t i = 2; i <= 14; i += 2) {
+    aes_word_t sub[AES_NOHW_BLOCK_WORDS];
+    aes_nohw_sub_block(sub, block2);
+    uint8_t rcon = aes_nohw_rcon[i / 2 - 1];
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate |rcon| and the transformed word into the first word.
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_rcon_slice(rcon, j));
+      block1[j] = aes_nohw_xor(
+          block1[j],
+          aes_nohw_shift_right(aes_nohw_rotate_rows_down(sub[j]), 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block1[j];
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 4));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 8));
+      block1[j] = aes_nohw_xor(block1[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * i, block1, 16);
+
+    if (i == 14) {
+      break;
+    }
+
+    aes_nohw_sub_block(sub, block1);
+    for (size_t j = 0; j < AES_NOHW_BLOCK_WORDS; j++) {
+      // Incorporate the transformed word into the first word.
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_right(sub[j], 12));
+      // Propagate to the remaining words.
+      aes_word_t v = block2[j];
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 4));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 8));
+      block2[j] = aes_nohw_xor(block2[j], aes_nohw_shift_left(v, 12));
+    }
+    memcpy(key->rd_key + 4 * (i + 1), block2, 16);
+  }
+}
+
+
+// External API.
+
+int aes_nohw_set_encrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey) {
+  switch (bits) {
+    case 128:
+      aes_nohw_setup_key_128(aeskey, key);
+      return 0;
+    case 192:
+      aes_nohw_setup_key_192(aeskey, key);
+      return 0;
+    case 256:
+      aes_nohw_setup_key_256(aeskey, key);
+      return 0;
+  }
+  return 1;
+}
+
+int aes_nohw_set_decrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey) {
+  return aes_nohw_set_encrypt_key(key, bits, aeskey);
+}
+
+void aes_nohw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  AES_NOHW_BATCH batch;
+  aes_nohw_to_batch(&batch, in, /*num_blocks=*/1);
+  aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+  aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+}
+
+void aes_nohw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  AES_NOHW_BATCH batch;
+  aes_nohw_to_batch(&batch, in, /*num_blocks=*/1);
+  aes_nohw_decrypt_batch(&sched, key->rounds, &batch);
+  aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+}
+
+static inline void aes_nohw_xor_block(uint8_t out[16], const uint8_t a[16],
+                                      const uint8_t b[16]) {
+  for (size_t i = 0; i < 16; i += sizeof(aes_word_t)) {
+    aes_word_t x, y;
+    memcpy(&x, a + i, sizeof(aes_word_t));
+    memcpy(&y, b + i, sizeof(aes_word_t));
+    x = aes_nohw_xor(x, y);
+    memcpy(out + i, &x, sizeof(aes_word_t));
+  }
+}
+
+void aes_nohw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                   size_t blocks, const AES_KEY *key,
+                                   const uint8_t ivec[16]) {
+  if (blocks == 0) {
+    return;
+  }
+
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+
+  // Make |AES_NOHW_BATCH_SIZE| copies of |ivec|.
+  alignas(AES_NOHW_WORD_SIZE) union {
+    uint32_t u32[AES_NOHW_BATCH_SIZE * 4];
+    uint8_t u8[AES_NOHW_BATCH_SIZE * 16];
+  } ivs, enc_ivs;
+  for (size_t i = 0; i < AES_NOHW_BATCH_SIZE; i++) {
+    memcpy(ivs.u8 + 16 * i, ivec, 16);
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ivs.u32[3]);
+  for (;;) {
+    // Update counters.
+    for (size_t i = 0; i < AES_NOHW_BATCH_SIZE; i++) {
+      ivs.u32[4 * i + 3] = CRYPTO_bswap4(ctr + i);
+    }
+
+    size_t todo = blocks >= AES_NOHW_BATCH_SIZE ? AES_NOHW_BATCH_SIZE : blocks;
+    AES_NOHW_BATCH batch;
+    aes_nohw_to_batch(&batch, ivs.u8, todo);
+    aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+    aes_nohw_from_batch(enc_ivs.u8, todo, &batch);
+
+    for (size_t i = 0; i < todo; i++) {
+      aes_nohw_xor_block(out + 16 * i, in + 16 * i, enc_ivs.u8 + 16 * i);
+    }
+
+    blocks -= todo;
+    if (blocks == 0) {
+      break;
+    }
+
+    in += 16 * AES_NOHW_BATCH_SIZE;
+    out += 16 * AES_NOHW_BATCH_SIZE;
+    ctr += AES_NOHW_BATCH_SIZE;
+  }
+}
+
+void aes_nohw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const AES_KEY *key, uint8_t *ivec, const int enc) {
+  assert(len % 16 == 0);
+  size_t blocks = len / 16;
+  if (blocks == 0) {
+    return;
+  }
+
+  AES_NOHW_SCHEDULE sched;
+  aes_nohw_expand_round_keys(&sched, key);
+  alignas(AES_NOHW_WORD_SIZE) uint8_t iv[16];
+  memcpy(iv, ivec, 16);
+
+  if (enc) {
+    // CBC encryption is not parallelizable.
+    while (blocks > 0) {
+      aes_nohw_xor_block(iv, iv, in);
+
+      AES_NOHW_BATCH batch;
+      aes_nohw_to_batch(&batch, iv, /*num_blocks=*/1);
+      aes_nohw_encrypt_batch(&sched, key->rounds, &batch);
+      aes_nohw_from_batch(out, /*num_blocks=*/1, &batch);
+
+      memcpy(iv, out, 16);
+
+      in += 16;
+      out += 16;
+      blocks--;
+    }
+    memcpy(ivec, iv, 16);
+    return;
+  }
+
+  for (;;) {
+    size_t todo = blocks >= AES_NOHW_BATCH_SIZE ? AES_NOHW_BATCH_SIZE : blocks;
+    // Make a copy of the input so we can decrypt in-place.
+    alignas(AES_NOHW_WORD_SIZE) uint8_t copy[AES_NOHW_BATCH_SIZE * 16];
+    memcpy(copy, in, todo * 16);
+
+    AES_NOHW_BATCH batch;
+    aes_nohw_to_batch(&batch, in, todo);
+    aes_nohw_decrypt_batch(&sched, key->rounds, &batch);
+    aes_nohw_from_batch(out, todo, &batch);
+
+    aes_nohw_xor_block(out, out, iv);
+    for (size_t i = 1; i < todo; i++) {
+      aes_nohw_xor_block(out + 16 * i, out + 16 * i, copy + 16 * (i - 1));
+    }
+
+    // Save the last block as the IV.
+    memcpy(iv, copy + 16 * (todo - 1), 16);
+
+    blocks -= todo;
+    if (blocks == 0) {
+      break;
+    }
+
+    in += 16 * AES_NOHW_BATCH_SIZE;
+    out += 16 * AES_NOHW_BATCH_SIZE;
+  }
+
+  memcpy(ivec, iv, 16);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h
new file mode 100644
index 0000000..2c20807
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h	
@@ -0,0 +1,238 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_AES_INTERNAL_H
+#define OPENSSL_HEADER_AES_INTERNAL_H
+
+#include <stdlib.h>
+
+#include <openssl_grpc/cpu.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM)
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+#define HWAES
+#define HWAES_ECB
+
+OPENSSL_INLINE int hwaes_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (57 - 32))) != 0;
+}
+
+#define VPAES
+#if defined(OPENSSL_X86_64)
+#define VPAES_CTR32
+#endif
+#define VPAES_CBC
+OPENSSL_INLINE int vpaes_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (41 - 32))) != 0;
+}
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+#define HWAES
+
+OPENSSL_INLINE int hwaes_capable(void) { return CRYPTO_is_ARMv8_AES_capable(); }
+
+#if defined(OPENSSL_ARM)
+#define BSAES
+#define VPAES
+#define VPAES_CTR32
+OPENSSL_INLINE int bsaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+OPENSSL_INLINE int vpaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+#endif
+
+#if defined(OPENSSL_AARCH64)
+#define VPAES
+#define VPAES_CBC
+#define VPAES_CTR32
+OPENSSL_INLINE int vpaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+#endif
+
+#elif defined(OPENSSL_PPC64LE)
+#define HWAES
+
+OPENSSL_INLINE int hwaes_capable(void) {
+  return CRYPTO_is_PPC64LE_vcrypto_capable();
+}
+#endif
+
+#endif  // !NO_ASM
+
+
+#if defined(HWAES)
+
+int aes_hw_set_encrypt_key(const uint8_t *user_key, const int bits,
+                           AES_KEY *key);
+int aes_hw_set_decrypt_key(const uint8_t *user_key, const int bits,
+                           AES_KEY *key);
+void aes_hw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_hw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, const int enc);
+void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, const uint8_t ivec[16]);
+
+#else
+
+// If HWAES isn't defined then we provide dummy functions for each of the hwaes
+// functions.
+OPENSSL_INLINE int hwaes_capable(void) { return 0; }
+
+OPENSSL_INLINE int aes_hw_set_encrypt_key(const uint8_t *user_key, int bits,
+                                          AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE int aes_hw_set_decrypt_key(const uint8_t *user_key, int bits,
+                                          AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_encrypt(const uint8_t *in, uint8_t *out,
+                                   const AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_decrypt(const uint8_t *in, uint8_t *out,
+                                   const AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t length, const AES_KEY *key,
+                                       uint8_t *ivec, int enc) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                                size_t len, const AES_KEY *key,
+                                                const uint8_t ivec[16]) {
+  abort();
+}
+
+#endif  // !HWAES
+
+
+#if defined(HWAES_ECB)
+void aes_hw_ecb_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, const int enc);
+#endif  // HWAES_ECB
+
+
+#if defined(BSAES)
+// Note |bsaes_cbc_encrypt| requires |enc| to be zero.
+void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                       const AES_KEY *key, uint8_t ivec[16], int enc);
+void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                const AES_KEY *key, const uint8_t ivec[16]);
+// VPAES to BSAES conversions are available on all BSAES platforms.
+void vpaes_encrypt_key_to_bsaes(AES_KEY *out_bsaes, const AES_KEY *vpaes);
+void vpaes_decrypt_key_to_bsaes(AES_KEY *out_bsaes, const AES_KEY *vpaes);
+#else
+OPENSSL_INLINE char bsaes_capable(void) { return 0; }
+
+// On other platforms, bsaes_capable() will always return false and so the
+// following will never be called.
+OPENSSL_INLINE void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                      size_t length, const AES_KEY *key,
+                                      uint8_t ivec[16], int enc) {
+  abort();
+}
+
+OPENSSL_INLINE void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                               size_t len, const AES_KEY *key,
+                                               const uint8_t ivec[16]) {
+  abort();
+}
+
+OPENSSL_INLINE void vpaes_encrypt_key_to_bsaes(AES_KEY *out_bsaes,
+                                               const AES_KEY *vpaes) {
+  abort();
+}
+
+OPENSSL_INLINE void vpaes_decrypt_key_to_bsaes(AES_KEY *out_bsaes,
+                                               const AES_KEY *vpaes) {
+  abort();
+}
+#endif  // !BSAES
+
+
+#if defined(VPAES)
+// On platforms where VPAES gets defined (just above), then these functions are
+// provided by asm.
+int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
+int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
+
+void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+
+#if defined(VPAES_CBC)
+void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                       const AES_KEY *key, uint8_t *ivec, int enc);
+#endif
+#if defined(VPAES_CTR32)
+void vpaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                const AES_KEY *key, const uint8_t ivec[16]);
+#endif
+#else
+OPENSSL_INLINE char vpaes_capable(void) { return 0; }
+
+// On other platforms, vpaes_capable() will always return false and so the
+// following will never be called.
+OPENSSL_INLINE int vpaes_set_encrypt_key(const uint8_t *userKey, int bits,
+                                         AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE int vpaes_set_decrypt_key(const uint8_t *userKey, int bits,
+                                         AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_encrypt(const uint8_t *in, uint8_t *out,
+                                  const AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_decrypt(const uint8_t *in, uint8_t *out,
+                                  const AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                      size_t length, const AES_KEY *key,
+                                      uint8_t *ivec, int enc) {
+  abort();
+}
+#endif  // !VPAES
+
+
+int aes_nohw_set_encrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey);
+int aes_nohw_set_decrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey);
+void aes_nohw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_nohw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_nohw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                   size_t blocks, const AES_KEY *key,
+                                   const uint8_t ivec[16]);
+void aes_nohw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const AES_KEY *key, uint8_t *ivec, const int enc);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_AES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h.grpc_back
new file mode 100644
index 0000000..5b80695
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/internal.h.grpc_back	
@@ -0,0 +1,238 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_AES_INTERNAL_H
+#define OPENSSL_HEADER_AES_INTERNAL_H
+
+#include <stdlib.h>
+
+#include <openssl/cpu.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM)
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+#define HWAES
+#define HWAES_ECB
+
+OPENSSL_INLINE int hwaes_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (57 - 32))) != 0;
+}
+
+#define VPAES
+#if defined(OPENSSL_X86_64)
+#define VPAES_CTR32
+#endif
+#define VPAES_CBC
+OPENSSL_INLINE int vpaes_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (41 - 32))) != 0;
+}
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+#define HWAES
+
+OPENSSL_INLINE int hwaes_capable(void) { return CRYPTO_is_ARMv8_AES_capable(); }
+
+#if defined(OPENSSL_ARM)
+#define BSAES
+#define VPAES
+#define VPAES_CTR32
+OPENSSL_INLINE int bsaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+OPENSSL_INLINE int vpaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+#endif
+
+#if defined(OPENSSL_AARCH64)
+#define VPAES
+#define VPAES_CBC
+#define VPAES_CTR32
+OPENSSL_INLINE int vpaes_capable(void) { return CRYPTO_is_NEON_capable(); }
+#endif
+
+#elif defined(OPENSSL_PPC64LE)
+#define HWAES
+
+OPENSSL_INLINE int hwaes_capable(void) {
+  return CRYPTO_is_PPC64LE_vcrypto_capable();
+}
+#endif
+
+#endif  // !NO_ASM
+
+
+#if defined(HWAES)
+
+int aes_hw_set_encrypt_key(const uint8_t *user_key, const int bits,
+                           AES_KEY *key);
+int aes_hw_set_decrypt_key(const uint8_t *user_key, const int bits,
+                           AES_KEY *key);
+void aes_hw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_hw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, const int enc);
+void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, const uint8_t ivec[16]);
+
+#else
+
+// If HWAES isn't defined then we provide dummy functions for each of the hwaes
+// functions.
+OPENSSL_INLINE int hwaes_capable(void) { return 0; }
+
+OPENSSL_INLINE int aes_hw_set_encrypt_key(const uint8_t *user_key, int bits,
+                                          AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE int aes_hw_set_decrypt_key(const uint8_t *user_key, int bits,
+                                          AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_encrypt(const uint8_t *in, uint8_t *out,
+                                   const AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_decrypt(const uint8_t *in, uint8_t *out,
+                                   const AES_KEY *key) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t length, const AES_KEY *key,
+                                       uint8_t *ivec, int enc) {
+  abort();
+}
+
+OPENSSL_INLINE void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                                size_t len, const AES_KEY *key,
+                                                const uint8_t ivec[16]) {
+  abort();
+}
+
+#endif  // !HWAES
+
+
+#if defined(HWAES_ECB)
+void aes_hw_ecb_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, const int enc);
+#endif  // HWAES_ECB
+
+
+#if defined(BSAES)
+// Note |bsaes_cbc_encrypt| requires |enc| to be zero.
+void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                       const AES_KEY *key, uint8_t ivec[16], int enc);
+void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                const AES_KEY *key, const uint8_t ivec[16]);
+// VPAES to BSAES conversions are available on all BSAES platforms.
+void vpaes_encrypt_key_to_bsaes(AES_KEY *out_bsaes, const AES_KEY *vpaes);
+void vpaes_decrypt_key_to_bsaes(AES_KEY *out_bsaes, const AES_KEY *vpaes);
+#else
+OPENSSL_INLINE char bsaes_capable(void) { return 0; }
+
+// On other platforms, bsaes_capable() will always return false and so the
+// following will never be called.
+OPENSSL_INLINE void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                      size_t length, const AES_KEY *key,
+                                      uint8_t ivec[16], int enc) {
+  abort();
+}
+
+OPENSSL_INLINE void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                               size_t len, const AES_KEY *key,
+                                               const uint8_t ivec[16]) {
+  abort();
+}
+
+OPENSSL_INLINE void vpaes_encrypt_key_to_bsaes(AES_KEY *out_bsaes,
+                                               const AES_KEY *vpaes) {
+  abort();
+}
+
+OPENSSL_INLINE void vpaes_decrypt_key_to_bsaes(AES_KEY *out_bsaes,
+                                               const AES_KEY *vpaes) {
+  abort();
+}
+#endif  // !BSAES
+
+
+#if defined(VPAES)
+// On platforms where VPAES gets defined (just above), then these functions are
+// provided by asm.
+int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
+int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
+
+void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+
+#if defined(VPAES_CBC)
+void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                       const AES_KEY *key, uint8_t *ivec, int enc);
+#endif
+#if defined(VPAES_CTR32)
+void vpaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
+                                const AES_KEY *key, const uint8_t ivec[16]);
+#endif
+#else
+OPENSSL_INLINE char vpaes_capable(void) { return 0; }
+
+// On other platforms, vpaes_capable() will always return false and so the
+// following will never be called.
+OPENSSL_INLINE int vpaes_set_encrypt_key(const uint8_t *userKey, int bits,
+                                         AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE int vpaes_set_decrypt_key(const uint8_t *userKey, int bits,
+                                         AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_encrypt(const uint8_t *in, uint8_t *out,
+                                  const AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_decrypt(const uint8_t *in, uint8_t *out,
+                                  const AES_KEY *key) {
+  abort();
+}
+OPENSSL_INLINE void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                      size_t length, const AES_KEY *key,
+                                      uint8_t *ivec, int enc) {
+  abort();
+}
+#endif  // !VPAES
+
+
+int aes_nohw_set_encrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey);
+int aes_nohw_set_decrypt_key(const uint8_t *key, unsigned bits,
+                             AES_KEY *aeskey);
+void aes_nohw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_nohw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
+void aes_nohw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
+                                   size_t blocks, const AES_KEY *key,
+                                   const uint8_t ivec[16]);
+void aes_nohw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const AES_KEY *key, uint8_t *ivec, const int enc);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_AES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c
new file mode 100644
index 0000000..a0947bc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c	
@@ -0,0 +1,236 @@
+/* ====================================================================
+ * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/aes.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "../../internal.h"
+
+
+// kDefaultIV is the default IV value given in RFC 3394, 2.2.3.1.
+static const uint8_t kDefaultIV[] = {
+    0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
+};
+
+static const unsigned kBound = 6;
+
+int AES_wrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                 const uint8_t *in, size_t in_len) {
+  // See RFC 3394, section 2.2.1. Additionally, note that section 2 requires the
+  // plaintext be at least two 8-byte blocks.
+
+  if (in_len > INT_MAX - 8 || in_len < 16 || in_len % 8 != 0) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+
+  OPENSSL_memmove(out + 8, in, in_len);
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, iv, 8);
+
+  size_t n = in_len / 8;
+
+  for (unsigned j = 0; j < kBound; j++) {
+    for (size_t i = 1; i <= n; i++) {
+      OPENSSL_memcpy(A + 8, out + 8 * i, 8);
+      AES_encrypt(A, A, key);
+
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(out + 8 * i, A + 8, 8);
+    }
+  }
+
+  OPENSSL_memcpy(out, A, 8);
+  return (int)in_len + 8;
+}
+
+// aes_unwrap_key_inner performs steps one and two from
+// https://tools.ietf.org/html/rfc3394#section-2.2.2
+static int aes_unwrap_key_inner(const AES_KEY *key, uint8_t *out,
+                                uint8_t out_iv[8], const uint8_t *in,
+                                size_t in_len) {
+  // See RFC 3394, section 2.2.2. Additionally, note that section 2 requires the
+  // plaintext be at least two 8-byte blocks, so the ciphertext must be at least
+  // three blocks.
+
+  if (in_len > INT_MAX || in_len < 24 || in_len % 8 != 0) {
+    return 0;
+  }
+
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, in, 8);
+  OPENSSL_memmove(out, in + 8, in_len - 8);
+
+  size_t n = (in_len / 8) - 1;
+
+  for (unsigned j = kBound - 1; j < kBound; j--) {
+    for (size_t i = n; i > 0; i--) {
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(A + 8, out + 8 * (i - 1), 8);
+      AES_decrypt(A, A, key);
+      OPENSSL_memcpy(out + 8 * (i - 1), A + 8, 8);
+    }
+  }
+
+  memcpy(out_iv, A, 8);
+  return 1;
+}
+
+int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                   const uint8_t *in, size_t in_len) {
+  uint8_t calculated_iv[8];
+  if (!aes_unwrap_key_inner(key, out, calculated_iv, in, in_len)) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+  if (CRYPTO_memcmp(calculated_iv, iv, 8) != 0) {
+    return -1;
+  }
+
+  return (int)in_len - 8;
+}
+
+// kPaddingConstant is used in Key Wrap with Padding. See
+// https://tools.ietf.org/html/rfc5649#section-3
+static const uint8_t kPaddingConstant[4] = {0xa6, 0x59, 0x59, 0xa6};
+
+int AES_wrap_key_padded(const AES_KEY *key, uint8_t *out, size_t *out_len,
+                        size_t max_out, const uint8_t *in, size_t in_len) {
+  // See https://tools.ietf.org/html/rfc5649#section-4.1
+  const uint32_t in_len32_be = CRYPTO_bswap4(in_len);
+  const uint64_t in_len64 = in_len;
+  const size_t padded_len = (in_len + 7) & ~7;
+
+  *out_len = 0;
+  if (in_len == 0 || in_len64 > 0xffffffffu || in_len + 7 < in_len ||
+      padded_len + 8 < padded_len || max_out < padded_len + 8) {
+    return 0;
+  }
+
+  uint8_t block[AES_BLOCK_SIZE];
+  memcpy(block, kPaddingConstant, sizeof(kPaddingConstant));
+  memcpy(block + 4, &in_len32_be, sizeof(in_len32_be));
+
+  if (in_len <= 8) {
+    memset(block + 8, 0, 8);
+    memcpy(block + 8, in, in_len);
+    AES_encrypt(block, out, key);
+    *out_len = AES_BLOCK_SIZE;
+    return 1;
+  }
+
+  uint8_t *padded_in = OPENSSL_malloc(padded_len);
+  if (padded_in == NULL) {
+    return 0;
+  }
+  assert(padded_len >= 8);
+  memset(padded_in + padded_len - 8, 0, 8);
+  memcpy(padded_in, in, in_len);
+  const int ret = AES_wrap_key(key, block, out, padded_in, padded_len);
+  OPENSSL_free(padded_in);
+  if (ret < 0) {
+    return 0;
+  }
+  *out_len = ret;
+  return 1;
+}
+
+int AES_unwrap_key_padded(const AES_KEY *key, uint8_t *out, size_t *out_len,
+                          size_t max_out, const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+  if (in_len < AES_BLOCK_SIZE || max_out < in_len - 8) {
+    return 0;
+  }
+
+  uint8_t iv[8];
+  if (in_len == AES_BLOCK_SIZE) {
+    uint8_t block[AES_BLOCK_SIZE];
+    AES_decrypt(in, block, key);
+    memcpy(iv, block, sizeof(iv));
+    memcpy(out, block + 8, 8);
+  } else if (!aes_unwrap_key_inner(key, out, iv, in, in_len)) {
+    return 0;
+  }
+  assert(in_len % 8 == 0);
+
+  crypto_word_t ok = constant_time_eq_int(
+      CRYPTO_memcmp(iv, kPaddingConstant, sizeof(kPaddingConstant)), 0);
+
+  uint32_t claimed_len32;
+  memcpy(&claimed_len32, iv + 4, sizeof(claimed_len32));
+  const size_t claimed_len = CRYPTO_bswap4(claimed_len32);
+  ok &= ~constant_time_is_zero_w(claimed_len);
+  ok &= constant_time_eq_w((claimed_len - 1) >> 3, (in_len - 9) >> 3);
+
+  // Check that padding bytes are all zero.
+  for (size_t i = in_len - 15; i < in_len - 8; i++) {
+    ok &= constant_time_is_zero_w(constant_time_ge_8(i, claimed_len) & out[i]);
+  }
+
+  *out_len = constant_time_select_w(ok, claimed_len, 0);
+  return ok & 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c.grpc_back
new file mode 100644
index 0000000..9a5b28d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/key_wrap.c.grpc_back	
@@ -0,0 +1,236 @@
+/* ====================================================================
+ * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/aes.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "../../internal.h"
+
+
+// kDefaultIV is the default IV value given in RFC 3394, 2.2.3.1.
+static const uint8_t kDefaultIV[] = {
+    0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6, 0xa6,
+};
+
+static const unsigned kBound = 6;
+
+int AES_wrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                 const uint8_t *in, size_t in_len) {
+  // See RFC 3394, section 2.2.1. Additionally, note that section 2 requires the
+  // plaintext be at least two 8-byte blocks.
+
+  if (in_len > INT_MAX - 8 || in_len < 16 || in_len % 8 != 0) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+
+  OPENSSL_memmove(out + 8, in, in_len);
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, iv, 8);
+
+  size_t n = in_len / 8;
+
+  for (unsigned j = 0; j < kBound; j++) {
+    for (size_t i = 1; i <= n; i++) {
+      OPENSSL_memcpy(A + 8, out + 8 * i, 8);
+      AES_encrypt(A, A, key);
+
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(out + 8 * i, A + 8, 8);
+    }
+  }
+
+  OPENSSL_memcpy(out, A, 8);
+  return (int)in_len + 8;
+}
+
+// aes_unwrap_key_inner performs steps one and two from
+// https://tools.ietf.org/html/rfc3394#section-2.2.2
+static int aes_unwrap_key_inner(const AES_KEY *key, uint8_t *out,
+                                uint8_t out_iv[8], const uint8_t *in,
+                                size_t in_len) {
+  // See RFC 3394, section 2.2.2. Additionally, note that section 2 requires the
+  // plaintext be at least two 8-byte blocks, so the ciphertext must be at least
+  // three blocks.
+
+  if (in_len > INT_MAX || in_len < 24 || in_len % 8 != 0) {
+    return 0;
+  }
+
+  uint8_t A[AES_BLOCK_SIZE];
+  OPENSSL_memcpy(A, in, 8);
+  OPENSSL_memmove(out, in + 8, in_len - 8);
+
+  size_t n = (in_len / 8) - 1;
+
+  for (unsigned j = kBound - 1; j < kBound; j--) {
+    for (size_t i = n; i > 0; i--) {
+      uint32_t t = (uint32_t)(n * j + i);
+      A[7] ^= t & 0xff;
+      A[6] ^= (t >> 8) & 0xff;
+      A[5] ^= (t >> 16) & 0xff;
+      A[4] ^= (t >> 24) & 0xff;
+      OPENSSL_memcpy(A + 8, out + 8 * (i - 1), 8);
+      AES_decrypt(A, A, key);
+      OPENSSL_memcpy(out + 8 * (i - 1), A + 8, 8);
+    }
+  }
+
+  memcpy(out_iv, A, 8);
+  return 1;
+}
+
+int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv, uint8_t *out,
+                   const uint8_t *in, size_t in_len) {
+  uint8_t calculated_iv[8];
+  if (!aes_unwrap_key_inner(key, out, calculated_iv, in, in_len)) {
+    return -1;
+  }
+
+  if (iv == NULL) {
+    iv = kDefaultIV;
+  }
+  if (CRYPTO_memcmp(calculated_iv, iv, 8) != 0) {
+    return -1;
+  }
+
+  return (int)in_len - 8;
+}
+
+// kPaddingConstant is used in Key Wrap with Padding. See
+// https://tools.ietf.org/html/rfc5649#section-3
+static const uint8_t kPaddingConstant[4] = {0xa6, 0x59, 0x59, 0xa6};
+
+int AES_wrap_key_padded(const AES_KEY *key, uint8_t *out, size_t *out_len,
+                        size_t max_out, const uint8_t *in, size_t in_len) {
+  // See https://tools.ietf.org/html/rfc5649#section-4.1
+  const uint32_t in_len32_be = CRYPTO_bswap4(in_len);
+  const uint64_t in_len64 = in_len;
+  const size_t padded_len = (in_len + 7) & ~7;
+
+  *out_len = 0;
+  if (in_len == 0 || in_len64 > 0xffffffffu || in_len + 7 < in_len ||
+      padded_len + 8 < padded_len || max_out < padded_len + 8) {
+    return 0;
+  }
+
+  uint8_t block[AES_BLOCK_SIZE];
+  memcpy(block, kPaddingConstant, sizeof(kPaddingConstant));
+  memcpy(block + 4, &in_len32_be, sizeof(in_len32_be));
+
+  if (in_len <= 8) {
+    memset(block + 8, 0, 8);
+    memcpy(block + 8, in, in_len);
+    AES_encrypt(block, out, key);
+    *out_len = AES_BLOCK_SIZE;
+    return 1;
+  }
+
+  uint8_t *padded_in = OPENSSL_malloc(padded_len);
+  if (padded_in == NULL) {
+    return 0;
+  }
+  assert(padded_len >= 8);
+  memset(padded_in + padded_len - 8, 0, 8);
+  memcpy(padded_in, in, in_len);
+  const int ret = AES_wrap_key(key, block, out, padded_in, padded_len);
+  OPENSSL_free(padded_in);
+  if (ret < 0) {
+    return 0;
+  }
+  *out_len = ret;
+  return 1;
+}
+
+int AES_unwrap_key_padded(const AES_KEY *key, uint8_t *out, size_t *out_len,
+                          size_t max_out, const uint8_t *in, size_t in_len) {
+  *out_len = 0;
+  if (in_len < AES_BLOCK_SIZE || max_out < in_len - 8) {
+    return 0;
+  }
+
+  uint8_t iv[8];
+  if (in_len == AES_BLOCK_SIZE) {
+    uint8_t block[AES_BLOCK_SIZE];
+    AES_decrypt(in, block, key);
+    memcpy(iv, block, sizeof(iv));
+    memcpy(out, block + 8, 8);
+  } else if (!aes_unwrap_key_inner(key, out, iv, in, in_len)) {
+    return 0;
+  }
+  assert(in_len % 8 == 0);
+
+  crypto_word_t ok = constant_time_eq_int(
+      CRYPTO_memcmp(iv, kPaddingConstant, sizeof(kPaddingConstant)), 0);
+
+  uint32_t claimed_len32;
+  memcpy(&claimed_len32, iv + 4, sizeof(claimed_len32));
+  const size_t claimed_len = CRYPTO_bswap4(claimed_len32);
+  ok &= ~constant_time_is_zero_w(claimed_len);
+  ok &= constant_time_eq_w((claimed_len - 1) >> 3, (in_len - 9) >> 3);
+
+  // Check that padding bytes are all zero.
+  for (size_t i = in_len - 15; i < in_len - 8; i++) {
+    ok &= constant_time_is_zero_w(constant_time_ge_8(i, claimed_len) & out[i]);
+  }
+
+  *out_len = constant_time_select_w(ok, claimed_len, 0);
+  return ok & 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c
new file mode 100644
index 0000000..42497dc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c	
@@ -0,0 +1,106 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/aes.h>
+
+#include <assert.h>
+
+#include "../aes/internal.h"
+#include "../modes/internal.h"
+
+
+void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                        const AES_KEY *key, uint8_t ivec[AES_BLOCK_SIZE],
+                        uint8_t ecount_buf[AES_BLOCK_SIZE], unsigned int *num) {
+  CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num, AES_encrypt);
+}
+
+void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key,
+                     const int enc) {
+  assert(in && out && key);
+  assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
+
+  if (AES_ENCRYPT == enc) {
+    AES_encrypt(in, out, key);
+  } else {
+    AES_decrypt(in, out, key);
+  }
+}
+
+void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                     const AES_KEY *key, uint8_t *ivec, const int enc) {
+  if (hwaes_capable()) {
+    aes_hw_cbc_encrypt(in, out, len, key, ivec, enc);
+    return;
+  }
+
+  if (!vpaes_capable()) {
+    aes_nohw_cbc_encrypt(in, out, len, key, ivec, enc);
+    return;
+  }
+  if (enc) {
+    CRYPTO_cbc128_encrypt(in, out, len, key, ivec, AES_encrypt);
+  } else {
+    CRYPTO_cbc128_decrypt(in, out, len, key, ivec, AES_decrypt);
+  }
+}
+
+void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, int *num) {
+  unsigned num_u = (unsigned)(*num);
+  CRYPTO_ofb128_encrypt(in, out, length, key, ivec, &num_u, AES_encrypt);
+  *num = (int)num_u;
+}
+
+void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, int *num,
+                        int enc) {
+  unsigned num_u = (unsigned)(*num);
+  CRYPTO_cfb128_encrypt(in, out, length, key, ivec, &num_u, enc, AES_encrypt);
+  *num = (int)num_u;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c.grpc_back
new file mode 100644
index 0000000..206fcfd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/aes/mode_wrappers.c.grpc_back	
@@ -0,0 +1,106 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/aes.h>
+
+#include <assert.h>
+
+#include "../aes/internal.h"
+#include "../modes/internal.h"
+
+
+void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                        const AES_KEY *key, uint8_t ivec[AES_BLOCK_SIZE],
+                        uint8_t ecount_buf[AES_BLOCK_SIZE], unsigned int *num) {
+  CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num, AES_encrypt);
+}
+
+void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key,
+                     const int enc) {
+  assert(in && out && key);
+  assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
+
+  if (AES_ENCRYPT == enc) {
+    AES_encrypt(in, out, key);
+  } else {
+    AES_decrypt(in, out, key);
+  }
+}
+
+void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                     const AES_KEY *key, uint8_t *ivec, const int enc) {
+  if (hwaes_capable()) {
+    aes_hw_cbc_encrypt(in, out, len, key, ivec, enc);
+    return;
+  }
+
+  if (!vpaes_capable()) {
+    aes_nohw_cbc_encrypt(in, out, len, key, ivec, enc);
+    return;
+  }
+  if (enc) {
+    CRYPTO_cbc128_encrypt(in, out, len, key, ivec, AES_encrypt);
+  } else {
+    CRYPTO_cbc128_decrypt(in, out, len, key, ivec, AES_decrypt);
+  }
+}
+
+void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, int *num) {
+  unsigned num_u = (unsigned)(*num);
+  CRYPTO_ofb128_encrypt(in, out, length, key, ivec, &num_u, AES_encrypt);
+  *num = (int)num_u;
+}
+
+void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
+                        const AES_KEY *key, uint8_t *ivec, int *num,
+                        int enc) {
+  unsigned num_u = (unsigned)(*num);
+  CRYPTO_cfb128_encrypt(in, out, length, key, ivec, &num_u, enc, AES_encrypt);
+  *num = (int)num_u;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c
new file mode 100644
index 0000000..8c19670
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c	
@@ -0,0 +1,316 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+
+
+int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  const BIGNUM *tmp;
+  int a_neg = a->neg, ret;
+
+  //  a +  b	a+b
+  //  a + -b	a-b
+  // -a +  b	b-a
+  // -a + -b	-(a+b)
+  if (a_neg ^ b->neg) {
+    // only one is negative
+    if (a_neg) {
+      tmp = a;
+      a = b;
+      b = tmp;
+    }
+
+    // we are now a - b
+    if (BN_ucmp(a, b) < 0) {
+      if (!BN_usub(r, b, a)) {
+        return 0;
+      }
+      r->neg = 1;
+    } else {
+      if (!BN_usub(r, a, b)) {
+        return 0;
+      }
+      r->neg = 0;
+    }
+    return 1;
+  }
+
+  ret = BN_uadd(r, a, b);
+  r->neg = a_neg;
+  return ret;
+}
+
+int bn_uadd_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  // Widths are public, so we normalize to make |a| the larger one.
+  if (a->width < b->width) {
+    const BIGNUM *tmp = a;
+    a = b;
+    b = tmp;
+  }
+
+  int max = a->width;
+  int min = b->width;
+  if (!bn_wexpand(r, max + 1)) {
+    return 0;
+  }
+  r->width = max + 1;
+
+  BN_ULONG carry = bn_add_words(r->d, a->d, b->d, min);
+  for (int i = min; i < max; i++) {
+    // |r| and |a| may alias, so use a temporary.
+    BN_ULONG tmp = carry + a->d[i];
+    carry = tmp < a->d[i];
+    r->d[i] = tmp;
+  }
+
+  r->d[max] = carry;
+  return 1;
+}
+
+int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  if (!bn_uadd_consttime(r, a, b)) {
+    return 0;
+  }
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_add_word(BIGNUM *a, BN_ULONG w) {
+  BN_ULONG l;
+  int i;
+
+  // degenerate case: w is zero
+  if (!w) {
+    return 1;
+  }
+
+  // degenerate case: a is zero
+  if (BN_is_zero(a)) {
+    return BN_set_word(a, w);
+  }
+
+  // handle 'a' when negative
+  if (a->neg) {
+    a->neg = 0;
+    i = BN_sub_word(a, w);
+    if (!BN_is_zero(a)) {
+      a->neg = !(a->neg);
+    }
+    return i;
+  }
+
+  for (i = 0; w != 0 && i < a->width; i++) {
+    a->d[i] = l = a->d[i] + w;
+    w = (w > l) ? 1 : 0;
+  }
+
+  if (w && i == a->width) {
+    if (!bn_wexpand(a, a->width + 1)) {
+      return 0;
+    }
+    a->width++;
+    a->d[i] = w;
+  }
+
+  return 1;
+}
+
+int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  int add = 0, neg = 0;
+  const BIGNUM *tmp;
+
+  //  a -  b	a-b
+  //  a - -b	a+b
+  // -a -  b	-(a+b)
+  // -a - -b	b-a
+  if (a->neg) {
+    if (b->neg) {
+      tmp = a;
+      a = b;
+      b = tmp;
+    } else {
+      add = 1;
+      neg = 1;
+    }
+  } else {
+    if (b->neg) {
+      add = 1;
+      neg = 0;
+    }
+  }
+
+  if (add) {
+    if (!BN_uadd(r, a, b)) {
+      return 0;
+    }
+
+    r->neg = neg;
+    return 1;
+  }
+
+  if (BN_ucmp(a, b) < 0) {
+    if (!BN_usub(r, b, a)) {
+      return 0;
+    }
+    r->neg = 1;
+  } else {
+    if (!BN_usub(r, a, b)) {
+      return 0;
+    }
+    r->neg = 0;
+  }
+
+  return 1;
+}
+
+int bn_usub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  // |b| may have more words than |a| given non-minimal inputs, but all words
+  // beyond |a->width| must then be zero.
+  int b_width = b->width;
+  if (b_width > a->width) {
+    if (!bn_fits_in_words(b, a->width)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_ARG2_LT_ARG3);
+      return 0;
+    }
+    b_width = a->width;
+  }
+
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+
+  BN_ULONG borrow = bn_sub_words(r->d, a->d, b->d, b_width);
+  for (int i = b_width; i < a->width; i++) {
+    // |r| and |a| may alias, so use a temporary.
+    BN_ULONG tmp = a->d[i];
+    r->d[i] = a->d[i] - borrow;
+    borrow = tmp < r->d[i];
+  }
+
+  if (borrow) {
+    OPENSSL_PUT_ERROR(BN, BN_R_ARG2_LT_ARG3);
+    return 0;
+  }
+
+  r->width = a->width;
+  r->neg = 0;
+  return 1;
+}
+
+int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  if (!bn_usub_consttime(r, a, b)) {
+    return 0;
+  }
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_sub_word(BIGNUM *a, BN_ULONG w) {
+  int i;
+
+  // degenerate case: w is zero
+  if (!w) {
+    return 1;
+  }
+
+  // degenerate case: a is zero
+  if (BN_is_zero(a)) {
+    i = BN_set_word(a, w);
+    if (i != 0) {
+      BN_set_negative(a, 1);
+    }
+    return i;
+  }
+
+  // handle 'a' when negative
+  if (a->neg) {
+    a->neg = 0;
+    i = BN_add_word(a, w);
+    a->neg = 1;
+    return i;
+  }
+
+  if ((bn_minimal_width(a) == 1) && (a->d[0] < w)) {
+    a->d[0] = w - a->d[0];
+    a->neg = 1;
+    return 1;
+  }
+
+  i = 0;
+  for (;;) {
+    if (a->d[i] >= w) {
+      a->d[i] -= w;
+      break;
+    } else {
+      a->d[i] -= w;
+      i++;
+      w = 1;
+    }
+  }
+
+  if ((a->d[i] == 0) && (i == (a->width - 1))) {
+    a->width--;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c.grpc_back
new file mode 100644
index 0000000..38a8450
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/add.c.grpc_back	
@@ -0,0 +1,316 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+
+
+int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  const BIGNUM *tmp;
+  int a_neg = a->neg, ret;
+
+  //  a +  b	a+b
+  //  a + -b	a-b
+  // -a +  b	b-a
+  // -a + -b	-(a+b)
+  if (a_neg ^ b->neg) {
+    // only one is negative
+    if (a_neg) {
+      tmp = a;
+      a = b;
+      b = tmp;
+    }
+
+    // we are now a - b
+    if (BN_ucmp(a, b) < 0) {
+      if (!BN_usub(r, b, a)) {
+        return 0;
+      }
+      r->neg = 1;
+    } else {
+      if (!BN_usub(r, a, b)) {
+        return 0;
+      }
+      r->neg = 0;
+    }
+    return 1;
+  }
+
+  ret = BN_uadd(r, a, b);
+  r->neg = a_neg;
+  return ret;
+}
+
+int bn_uadd_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  // Widths are public, so we normalize to make |a| the larger one.
+  if (a->width < b->width) {
+    const BIGNUM *tmp = a;
+    a = b;
+    b = tmp;
+  }
+
+  int max = a->width;
+  int min = b->width;
+  if (!bn_wexpand(r, max + 1)) {
+    return 0;
+  }
+  r->width = max + 1;
+
+  BN_ULONG carry = bn_add_words(r->d, a->d, b->d, min);
+  for (int i = min; i < max; i++) {
+    // |r| and |a| may alias, so use a temporary.
+    BN_ULONG tmp = carry + a->d[i];
+    carry = tmp < a->d[i];
+    r->d[i] = tmp;
+  }
+
+  r->d[max] = carry;
+  return 1;
+}
+
+int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  if (!bn_uadd_consttime(r, a, b)) {
+    return 0;
+  }
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_add_word(BIGNUM *a, BN_ULONG w) {
+  BN_ULONG l;
+  int i;
+
+  // degenerate case: w is zero
+  if (!w) {
+    return 1;
+  }
+
+  // degenerate case: a is zero
+  if (BN_is_zero(a)) {
+    return BN_set_word(a, w);
+  }
+
+  // handle 'a' when negative
+  if (a->neg) {
+    a->neg = 0;
+    i = BN_sub_word(a, w);
+    if (!BN_is_zero(a)) {
+      a->neg = !(a->neg);
+    }
+    return i;
+  }
+
+  for (i = 0; w != 0 && i < a->width; i++) {
+    a->d[i] = l = a->d[i] + w;
+    w = (w > l) ? 1 : 0;
+  }
+
+  if (w && i == a->width) {
+    if (!bn_wexpand(a, a->width + 1)) {
+      return 0;
+    }
+    a->width++;
+    a->d[i] = w;
+  }
+
+  return 1;
+}
+
+int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  int add = 0, neg = 0;
+  const BIGNUM *tmp;
+
+  //  a -  b	a-b
+  //  a - -b	a+b
+  // -a -  b	-(a+b)
+  // -a - -b	b-a
+  if (a->neg) {
+    if (b->neg) {
+      tmp = a;
+      a = b;
+      b = tmp;
+    } else {
+      add = 1;
+      neg = 1;
+    }
+  } else {
+    if (b->neg) {
+      add = 1;
+      neg = 0;
+    }
+  }
+
+  if (add) {
+    if (!BN_uadd(r, a, b)) {
+      return 0;
+    }
+
+    r->neg = neg;
+    return 1;
+  }
+
+  if (BN_ucmp(a, b) < 0) {
+    if (!BN_usub(r, b, a)) {
+      return 0;
+    }
+    r->neg = 1;
+  } else {
+    if (!BN_usub(r, a, b)) {
+      return 0;
+    }
+    r->neg = 0;
+  }
+
+  return 1;
+}
+
+int bn_usub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  // |b| may have more words than |a| given non-minimal inputs, but all words
+  // beyond |a->width| must then be zero.
+  int b_width = b->width;
+  if (b_width > a->width) {
+    if (!bn_fits_in_words(b, a->width)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_ARG2_LT_ARG3);
+      return 0;
+    }
+    b_width = a->width;
+  }
+
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+
+  BN_ULONG borrow = bn_sub_words(r->d, a->d, b->d, b_width);
+  for (int i = b_width; i < a->width; i++) {
+    // |r| and |a| may alias, so use a temporary.
+    BN_ULONG tmp = a->d[i];
+    r->d[i] = a->d[i] - borrow;
+    borrow = tmp < r->d[i];
+  }
+
+  if (borrow) {
+    OPENSSL_PUT_ERROR(BN, BN_R_ARG2_LT_ARG3);
+    return 0;
+  }
+
+  r->width = a->width;
+  r->neg = 0;
+  return 1;
+}
+
+int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b) {
+  if (!bn_usub_consttime(r, a, b)) {
+    return 0;
+  }
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_sub_word(BIGNUM *a, BN_ULONG w) {
+  int i;
+
+  // degenerate case: w is zero
+  if (!w) {
+    return 1;
+  }
+
+  // degenerate case: a is zero
+  if (BN_is_zero(a)) {
+    i = BN_set_word(a, w);
+    if (i != 0) {
+      BN_set_negative(a, 1);
+    }
+    return i;
+  }
+
+  // handle 'a' when negative
+  if (a->neg) {
+    a->neg = 0;
+    i = BN_add_word(a, w);
+    a->neg = 1;
+    return i;
+  }
+
+  if ((bn_minimal_width(a) == 1) && (a->d[0] < w)) {
+    a->d[0] = w - a->d[0];
+    a->neg = 1;
+    return 1;
+  }
+
+  i = 0;
+  for (;;) {
+    if (a->d[i] >= w) {
+      a->d[i] -= w;
+      break;
+    } else {
+      a->d[i] -= w;
+      i++;
+      w = 1;
+    }
+  }
+
+  if ((a->d[i] == 0) && (i == (a->width - 1))) {
+    a->width--;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c
new file mode 100644
index 0000000..6034b61
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c	
@@ -0,0 +1,541 @@
+/* x86_64 BIGNUM accelerator version 0.1, December 2002.
+ *
+ * Implemented by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
+ * project.
+ *
+ * Rights for redistribution and usage in source and binary forms are
+ * granted according to the OpenSSL license. Warranty of any kind is
+ * disclaimed.
+ *
+ * Q. Version 0.1? It doesn't sound like Andy, he used to assign real
+ *    versions, like 1.0...
+ * A. Well, that's because this code is basically a quick-n-dirty
+ *    proof-of-concept hack. As you can see it's implemented with
+ *    inline assembler, which means that you're bound to GCC and that
+ *    there might be enough room for further improvement.
+ *
+ * Q. Why inline assembler?
+ * A. x86_64 features own ABI which I'm not familiar with. This is
+ *    why I decided to let the compiler take care of subroutine
+ *    prologue/epilogue as well as register allocation. For reference.
+ *    Win64 implements different ABI for AMD64, different from Linux.
+ *
+ * Q. How much faster does it get?
+ * A. 'apps/openssl speed rsa dsa' output with no-asm:
+ *
+ *	                  sign    verify    sign/s verify/s
+ *	rsa  512 bits   0.0006s   0.0001s   1683.8  18456.2
+ *	rsa 1024 bits   0.0028s   0.0002s    356.0   6407.0
+ *	rsa 2048 bits   0.0172s   0.0005s     58.0   1957.8
+ *	rsa 4096 bits   0.1155s   0.0018s      8.7    555.6
+ *	                  sign    verify    sign/s verify/s
+ *	dsa  512 bits   0.0005s   0.0006s   2100.8   1768.3
+ *	dsa 1024 bits   0.0014s   0.0018s    692.3    559.2
+ *	dsa 2048 bits   0.0049s   0.0061s    204.7    165.0
+ *
+ *    'apps/openssl speed rsa dsa' output with this module:
+ *
+ *	                  sign    verify    sign/s verify/s
+ *	rsa  512 bits   0.0004s   0.0000s   2767.1  33297.9
+ *	rsa 1024 bits   0.0012s   0.0001s    867.4  14674.7
+ *	rsa 2048 bits   0.0061s   0.0002s    164.0   5270.0
+ *	rsa 4096 bits   0.0384s   0.0006s     26.1   1650.8
+ *	                  sign    verify    sign/s verify/s
+ *	dsa  512 bits   0.0002s   0.0003s   4442.2   3786.3
+ *	dsa 1024 bits   0.0005s   0.0007s   1835.1   1497.4
+ *	dsa 2048 bits   0.0016s   0.0020s    620.4    504.6
+ *
+ *    For the reference. IA-32 assembler implementation performs
+ *    very much like 64-bit code compiled with no-asm on the same
+ *    machine.
+ */
+
+#include <openssl_grpc/bn.h>
+
+// TODO(davidben): Get this file working on MSVC x64.
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    (defined(__GNUC__) || defined(__clang__))
+
+#include "../internal.h"
+
+
+#undef mul
+#undef mul_add
+
+// "m"(a), "+m"(r)	is the way to favor DirectPath µ-code;
+// "g"(0)		let the compiler to decide where does it
+//			want to keep the value of zero;
+#define mul_add(r, a, word, carry)                                         \
+  do {                                                                     \
+    register BN_ULONG high, low;                                           \
+    __asm__("mulq %3" : "=a"(low), "=d"(high) : "a"(word), "m"(a) : "cc"); \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+r"(carry), "+d"(high)                                      \
+            : "a"(low), "g"(0)                                             \
+            : "cc");                                                       \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+m"(r), "+d"(high)                                          \
+            : "r"(carry), "g"(0)                                           \
+            : "cc");                                                       \
+    (carry) = high;                                                        \
+  } while (0)
+
+#define mul(r, a, word, carry)                                             \
+  do {                                                                     \
+    register BN_ULONG high, low;                                           \
+    __asm__("mulq %3" : "=a"(low), "=d"(high) : "a"(word), "g"(a) : "cc"); \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+r"(carry), "+d"(high)                                      \
+            : "a"(low), "g"(0)                                             \
+            : "cc");                                                       \
+    (r) = (carry);                                                         \
+    (carry) = high;                                                        \
+  } while (0)
+#undef sqr
+#define sqr(r0, r1, a) __asm__("mulq %2" : "=a"(r0), "=d"(r1) : "a"(a) : "cc");
+
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return (c1);
+  }
+
+  while (num & ~3) {
+    mul_add(rp[0], ap[0], w, c1);
+    mul_add(rp[1], ap[1], w, c1);
+    mul_add(rp[2], ap[2], w, c1);
+    mul_add(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  if (num) {
+    mul_add(rp[0], ap[0], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul_add(rp[1], ap[1], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul_add(rp[2], ap[2], w, c1);
+    return c1;
+  }
+
+  return c1;
+}
+
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                      BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul(rp[0], ap[0], w, c1);
+    mul(rp[1], ap[1], w, c1);
+    mul(rp[2], ap[2], w, c1);
+    mul(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  if (num) {
+    mul(rp[0], ap[0], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul(rp[1], ap[1], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul(rp[2], ap[2], w, c1);
+  }
+  return c1;
+}
+
+void bn_sqr_words(BN_ULONG *r, const BN_ULONG *a, size_t n) {
+  if (n == 0) {
+    return;
+  }
+
+  while (n & ~3) {
+    sqr(r[0], r[1], a[0]);
+    sqr(r[2], r[3], a[1]);
+    sqr(r[4], r[5], a[2]);
+    sqr(r[6], r[7], a[3]);
+    a += 4;
+    r += 8;
+    n -= 4;
+  }
+  if (n) {
+    sqr(r[0], r[1], a[0]);
+    if (--n == 0) {
+      return;
+    }
+    sqr(r[2], r[3], a[1]);
+    if (--n == 0) {
+      return;
+    }
+    sqr(r[4], r[5], a[2]);
+  }
+}
+
+BN_ULONG bn_add_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t n) {
+  BN_ULONG ret;
+  size_t i = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  __asm__ volatile (
+      "	subq	%0,%0		\n"  // clear carry
+      "	jmp	1f		\n"
+      ".p2align 4			\n"
+      "1:"
+      "	movq	(%4,%2,8),%0	\n"
+      "	adcq	(%5,%2,8),%0	\n"
+      "	movq	%0,(%3,%2,8)	\n"
+      "	lea	1(%2),%2	\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
+      "	sbbq	%0,%0		\n"
+      : "=&r"(ret), "+c"(n), "+r"(i)
+      : "r"(rp), "r"(ap), "r"(bp)
+      : "cc", "memory");
+
+  return ret & 1;
+}
+
+BN_ULONG bn_sub_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t n) {
+  BN_ULONG ret;
+  size_t i = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  __asm__ volatile (
+      "	subq	%0,%0		\n"  // clear borrow
+      "	jmp	1f		\n"
+      ".p2align 4			\n"
+      "1:"
+      "	movq	(%4,%2,8),%0	\n"
+      "	sbbq	(%5,%2,8),%0	\n"
+      "	movq	%0,(%3,%2,8)	\n"
+      "	lea	1(%2),%2	\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
+      "	sbbq	%0,%0		\n"
+      : "=&r"(ret), "+c"(n), "+r"(i)
+      : "r"(rp), "r"(ap), "r"(bp)
+      : "cc", "memory");
+
+  return ret & 1;
+}
+
+// mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0)
+// mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0)
+// sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0)
+// sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0)
+
+// Keep in mind that carrying into high part of multiplication result can not
+// overflow, because it cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2)                                  \
+  do {                                                               \
+    BN_ULONG t1, t2;                                                 \
+    __asm__("mulq %3" : "=a"(t1), "=d"(t2) : "a"(a), "m"(b) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2)                               \
+  do {                                                            \
+    BN_ULONG t1, t2;                                              \
+    __asm__("mulq %2" : "=a"(t1), "=d"(t2) : "a"((a)[i]) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                  \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                        \
+            : "r"(t1), "r"(t2), "g"(0)                            \
+            : "cc");                                              \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2)                                 \
+  do {                                                               \
+    BN_ULONG t1, t2;                                                 \
+    __asm__("mulq %3" : "=a"(t1), "=d"(t2) : "a"(a), "m"(b) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[4], b[0], c2, c3, c1);
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  mul_add_c(a[0], b[4], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[0], b[5], c3, c1, c2);
+  mul_add_c(a[1], b[4], c3, c1, c2);
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  mul_add_c(a[4], b[1], c3, c1, c2);
+  mul_add_c(a[5], b[0], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[6], b[0], c1, c2, c3);
+  mul_add_c(a[5], b[1], c1, c2, c3);
+  mul_add_c(a[4], b[2], c1, c2, c3);
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  mul_add_c(a[2], b[4], c1, c2, c3);
+  mul_add_c(a[1], b[5], c1, c2, c3);
+  mul_add_c(a[0], b[6], c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[7], c2, c3, c1);
+  mul_add_c(a[1], b[6], c2, c3, c1);
+  mul_add_c(a[2], b[5], c2, c3, c1);
+  mul_add_c(a[3], b[4], c2, c3, c1);
+  mul_add_c(a[4], b[3], c2, c3, c1);
+  mul_add_c(a[5], b[2], c2, c3, c1);
+  mul_add_c(a[6], b[1], c2, c3, c1);
+  mul_add_c(a[7], b[0], c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[1], c3, c1, c2);
+  mul_add_c(a[6], b[2], c3, c1, c2);
+  mul_add_c(a[5], b[3], c3, c1, c2);
+  mul_add_c(a[4], b[4], c3, c1, c2);
+  mul_add_c(a[3], b[5], c3, c1, c2);
+  mul_add_c(a[2], b[6], c3, c1, c2);
+  mul_add_c(a[1], b[7], c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  mul_add_c(a[2], b[7], c1, c2, c3);
+  mul_add_c(a[3], b[6], c1, c2, c3);
+  mul_add_c(a[4], b[5], c1, c2, c3);
+  mul_add_c(a[5], b[4], c1, c2, c3);
+  mul_add_c(a[6], b[3], c1, c2, c3);
+  mul_add_c(a[7], b[2], c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  mul_add_c(a[7], b[3], c2, c3, c1);
+  mul_add_c(a[6], b[4], c2, c3, c1);
+  mul_add_c(a[5], b[5], c2, c3, c1);
+  mul_add_c(a[4], b[6], c2, c3, c1);
+  mul_add_c(a[3], b[7], c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  mul_add_c(a[4], b[7], c3, c1, c2);
+  mul_add_c(a[5], b[6], c3, c1, c2);
+  mul_add_c(a[6], b[5], c3, c1, c2);
+  mul_add_c(a[7], b[4], c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  mul_add_c(a[7], b[5], c1, c2, c3);
+  mul_add_c(a[6], b[6], c1, c2, c3);
+  mul_add_c(a[5], b[7], c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  mul_add_c(a[6], b[7], c2, c3, c1);
+  mul_add_c(a[7], b[6], c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[7], c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  sqr_add_c2(a, 4, 0, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 5, 0, c3, c1, c2);
+  sqr_add_c2(a, 4, 1, c3, c1, c2);
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  sqr_add_c2(a, 4, 2, c1, c2, c3);
+  sqr_add_c2(a, 5, 1, c1, c2, c3);
+  sqr_add_c2(a, 6, 0, c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 0, c2, c3, c1);
+  sqr_add_c2(a, 6, 1, c2, c3, c1);
+  sqr_add_c2(a, 5, 2, c2, c3, c1);
+  sqr_add_c2(a, 4, 3, c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  sqr_add_c(a, 4, c3, c1, c2);
+  sqr_add_c2(a, 5, 3, c3, c1, c2);
+  sqr_add_c2(a, 6, 2, c3, c1, c2);
+  sqr_add_c2(a, 7, 1, c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 7, 2, c1, c2, c3);
+  sqr_add_c2(a, 6, 3, c1, c2, c3);
+  sqr_add_c2(a, 5, 4, c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  sqr_add_c(a, 5, c2, c3, c1);
+  sqr_add_c2(a, 6, 4, c2, c3, c1);
+  sqr_add_c2(a, 7, 3, c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 7, 4, c3, c1, c2);
+  sqr_add_c2(a, 6, 5, c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  sqr_add_c(a, 6, c1, c2, c3);
+  sqr_add_c2(a, 7, 5, c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 6, c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  sqr_add_c(a, 7, c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+#undef mul_add
+#undef mul
+#undef sqr
+#undef mul_add_c
+#undef sqr_add_c
+#undef mul_add_c2
+#undef sqr_add_c2
+
+#endif  // !NO_ASM && X86_64 && (__GNUC__ || __clang__)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c.grpc_back
new file mode 100644
index 0000000..30fff21
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/asm/x86_64-gcc.c.grpc_back	
@@ -0,0 +1,541 @@
+/* x86_64 BIGNUM accelerator version 0.1, December 2002.
+ *
+ * Implemented by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
+ * project.
+ *
+ * Rights for redistribution and usage in source and binary forms are
+ * granted according to the OpenSSL license. Warranty of any kind is
+ * disclaimed.
+ *
+ * Q. Version 0.1? It doesn't sound like Andy, he used to assign real
+ *    versions, like 1.0...
+ * A. Well, that's because this code is basically a quick-n-dirty
+ *    proof-of-concept hack. As you can see it's implemented with
+ *    inline assembler, which means that you're bound to GCC and that
+ *    there might be enough room for further improvement.
+ *
+ * Q. Why inline assembler?
+ * A. x86_64 features own ABI which I'm not familiar with. This is
+ *    why I decided to let the compiler take care of subroutine
+ *    prologue/epilogue as well as register allocation. For reference.
+ *    Win64 implements different ABI for AMD64, different from Linux.
+ *
+ * Q. How much faster does it get?
+ * A. 'apps/openssl speed rsa dsa' output with no-asm:
+ *
+ *	                  sign    verify    sign/s verify/s
+ *	rsa  512 bits   0.0006s   0.0001s   1683.8  18456.2
+ *	rsa 1024 bits   0.0028s   0.0002s    356.0   6407.0
+ *	rsa 2048 bits   0.0172s   0.0005s     58.0   1957.8
+ *	rsa 4096 bits   0.1155s   0.0018s      8.7    555.6
+ *	                  sign    verify    sign/s verify/s
+ *	dsa  512 bits   0.0005s   0.0006s   2100.8   1768.3
+ *	dsa 1024 bits   0.0014s   0.0018s    692.3    559.2
+ *	dsa 2048 bits   0.0049s   0.0061s    204.7    165.0
+ *
+ *    'apps/openssl speed rsa dsa' output with this module:
+ *
+ *	                  sign    verify    sign/s verify/s
+ *	rsa  512 bits   0.0004s   0.0000s   2767.1  33297.9
+ *	rsa 1024 bits   0.0012s   0.0001s    867.4  14674.7
+ *	rsa 2048 bits   0.0061s   0.0002s    164.0   5270.0
+ *	rsa 4096 bits   0.0384s   0.0006s     26.1   1650.8
+ *	                  sign    verify    sign/s verify/s
+ *	dsa  512 bits   0.0002s   0.0003s   4442.2   3786.3
+ *	dsa 1024 bits   0.0005s   0.0007s   1835.1   1497.4
+ *	dsa 2048 bits   0.0016s   0.0020s    620.4    504.6
+ *
+ *    For the reference. IA-32 assembler implementation performs
+ *    very much like 64-bit code compiled with no-asm on the same
+ *    machine.
+ */
+
+#include <openssl/bn.h>
+
+// TODO(davidben): Get this file working on MSVC x64.
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    (defined(__GNUC__) || defined(__clang__))
+
+#include "../internal.h"
+
+
+#undef mul
+#undef mul_add
+
+// "m"(a), "+m"(r)	is the way to favor DirectPath µ-code;
+// "g"(0)		let the compiler to decide where does it
+//			want to keep the value of zero;
+#define mul_add(r, a, word, carry)                                         \
+  do {                                                                     \
+    register BN_ULONG high, low;                                           \
+    __asm__("mulq %3" : "=a"(low), "=d"(high) : "a"(word), "m"(a) : "cc"); \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+r"(carry), "+d"(high)                                      \
+            : "a"(low), "g"(0)                                             \
+            : "cc");                                                       \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+m"(r), "+d"(high)                                          \
+            : "r"(carry), "g"(0)                                           \
+            : "cc");                                                       \
+    (carry) = high;                                                        \
+  } while (0)
+
+#define mul(r, a, word, carry)                                             \
+  do {                                                                     \
+    register BN_ULONG high, low;                                           \
+    __asm__("mulq %3" : "=a"(low), "=d"(high) : "a"(word), "g"(a) : "cc"); \
+    __asm__("addq %2,%0; adcq %3,%1"                                       \
+            : "+r"(carry), "+d"(high)                                      \
+            : "a"(low), "g"(0)                                             \
+            : "cc");                                                       \
+    (r) = (carry);                                                         \
+    (carry) = high;                                                        \
+  } while (0)
+#undef sqr
+#define sqr(r0, r1, a) __asm__("mulq %2" : "=a"(r0), "=d"(r1) : "a"(a) : "cc");
+
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return (c1);
+  }
+
+  while (num & ~3) {
+    mul_add(rp[0], ap[0], w, c1);
+    mul_add(rp[1], ap[1], w, c1);
+    mul_add(rp[2], ap[2], w, c1);
+    mul_add(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  if (num) {
+    mul_add(rp[0], ap[0], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul_add(rp[1], ap[1], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul_add(rp[2], ap[2], w, c1);
+    return c1;
+  }
+
+  return c1;
+}
+
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                      BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul(rp[0], ap[0], w, c1);
+    mul(rp[1], ap[1], w, c1);
+    mul(rp[2], ap[2], w, c1);
+    mul(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  if (num) {
+    mul(rp[0], ap[0], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul(rp[1], ap[1], w, c1);
+    if (--num == 0) {
+      return c1;
+    }
+    mul(rp[2], ap[2], w, c1);
+  }
+  return c1;
+}
+
+void bn_sqr_words(BN_ULONG *r, const BN_ULONG *a, size_t n) {
+  if (n == 0) {
+    return;
+  }
+
+  while (n & ~3) {
+    sqr(r[0], r[1], a[0]);
+    sqr(r[2], r[3], a[1]);
+    sqr(r[4], r[5], a[2]);
+    sqr(r[6], r[7], a[3]);
+    a += 4;
+    r += 8;
+    n -= 4;
+  }
+  if (n) {
+    sqr(r[0], r[1], a[0]);
+    if (--n == 0) {
+      return;
+    }
+    sqr(r[2], r[3], a[1]);
+    if (--n == 0) {
+      return;
+    }
+    sqr(r[4], r[5], a[2]);
+  }
+}
+
+BN_ULONG bn_add_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t n) {
+  BN_ULONG ret;
+  size_t i = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  __asm__ volatile (
+      "	subq	%0,%0		\n"  // clear carry
+      "	jmp	1f		\n"
+      ".p2align 4			\n"
+      "1:"
+      "	movq	(%4,%2,8),%0	\n"
+      "	adcq	(%5,%2,8),%0	\n"
+      "	movq	%0,(%3,%2,8)	\n"
+      "	lea	1(%2),%2	\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
+      "	sbbq	%0,%0		\n"
+      : "=&r"(ret), "+c"(n), "+r"(i)
+      : "r"(rp), "r"(ap), "r"(bp)
+      : "cc", "memory");
+
+  return ret & 1;
+}
+
+BN_ULONG bn_sub_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t n) {
+  BN_ULONG ret;
+  size_t i = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  __asm__ volatile (
+      "	subq	%0,%0		\n"  // clear borrow
+      "	jmp	1f		\n"
+      ".p2align 4			\n"
+      "1:"
+      "	movq	(%4,%2,8),%0	\n"
+      "	sbbq	(%5,%2,8),%0	\n"
+      "	movq	%0,(%3,%2,8)	\n"
+      "	lea	1(%2),%2	\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
+      "	sbbq	%0,%0		\n"
+      : "=&r"(ret), "+c"(n), "+r"(i)
+      : "r"(rp), "r"(ap), "r"(bp)
+      : "cc", "memory");
+
+  return ret & 1;
+}
+
+// mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0)
+// mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0)
+// sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0)
+// sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0)
+
+// Keep in mind that carrying into high part of multiplication result can not
+// overflow, because it cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2)                                  \
+  do {                                                               \
+    BN_ULONG t1, t2;                                                 \
+    __asm__("mulq %3" : "=a"(t1), "=d"(t2) : "a"(a), "m"(b) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2)                               \
+  do {                                                            \
+    BN_ULONG t1, t2;                                              \
+    __asm__("mulq %2" : "=a"(t1), "=d"(t2) : "a"((a)[i]) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                  \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                        \
+            : "r"(t1), "r"(t2), "g"(0)                            \
+            : "cc");                                              \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2)                                 \
+  do {                                                               \
+    BN_ULONG t1, t2;                                                 \
+    __asm__("mulq %3" : "=a"(t1), "=d"(t2) : "a"(a), "m"(b) : "cc"); \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+    __asm__("addq %3,%0; adcq %4,%1; adcq %5,%2"                     \
+            : "+r"(c0), "+r"(c1), "+r"(c2)                           \
+            : "r"(t1), "r"(t2), "g"(0)                               \
+            : "cc");                                                 \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[4], b[0], c2, c3, c1);
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  mul_add_c(a[0], b[4], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[0], b[5], c3, c1, c2);
+  mul_add_c(a[1], b[4], c3, c1, c2);
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  mul_add_c(a[4], b[1], c3, c1, c2);
+  mul_add_c(a[5], b[0], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[6], b[0], c1, c2, c3);
+  mul_add_c(a[5], b[1], c1, c2, c3);
+  mul_add_c(a[4], b[2], c1, c2, c3);
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  mul_add_c(a[2], b[4], c1, c2, c3);
+  mul_add_c(a[1], b[5], c1, c2, c3);
+  mul_add_c(a[0], b[6], c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[7], c2, c3, c1);
+  mul_add_c(a[1], b[6], c2, c3, c1);
+  mul_add_c(a[2], b[5], c2, c3, c1);
+  mul_add_c(a[3], b[4], c2, c3, c1);
+  mul_add_c(a[4], b[3], c2, c3, c1);
+  mul_add_c(a[5], b[2], c2, c3, c1);
+  mul_add_c(a[6], b[1], c2, c3, c1);
+  mul_add_c(a[7], b[0], c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[1], c3, c1, c2);
+  mul_add_c(a[6], b[2], c3, c1, c2);
+  mul_add_c(a[5], b[3], c3, c1, c2);
+  mul_add_c(a[4], b[4], c3, c1, c2);
+  mul_add_c(a[3], b[5], c3, c1, c2);
+  mul_add_c(a[2], b[6], c3, c1, c2);
+  mul_add_c(a[1], b[7], c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  mul_add_c(a[2], b[7], c1, c2, c3);
+  mul_add_c(a[3], b[6], c1, c2, c3);
+  mul_add_c(a[4], b[5], c1, c2, c3);
+  mul_add_c(a[5], b[4], c1, c2, c3);
+  mul_add_c(a[6], b[3], c1, c2, c3);
+  mul_add_c(a[7], b[2], c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  mul_add_c(a[7], b[3], c2, c3, c1);
+  mul_add_c(a[6], b[4], c2, c3, c1);
+  mul_add_c(a[5], b[5], c2, c3, c1);
+  mul_add_c(a[4], b[6], c2, c3, c1);
+  mul_add_c(a[3], b[7], c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  mul_add_c(a[4], b[7], c3, c1, c2);
+  mul_add_c(a[5], b[6], c3, c1, c2);
+  mul_add_c(a[6], b[5], c3, c1, c2);
+  mul_add_c(a[7], b[4], c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  mul_add_c(a[7], b[5], c1, c2, c3);
+  mul_add_c(a[6], b[6], c1, c2, c3);
+  mul_add_c(a[5], b[7], c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  mul_add_c(a[6], b[7], c2, c3, c1);
+  mul_add_c(a[7], b[6], c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[7], c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  sqr_add_c2(a, 4, 0, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 5, 0, c3, c1, c2);
+  sqr_add_c2(a, 4, 1, c3, c1, c2);
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  sqr_add_c2(a, 4, 2, c1, c2, c3);
+  sqr_add_c2(a, 5, 1, c1, c2, c3);
+  sqr_add_c2(a, 6, 0, c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 0, c2, c3, c1);
+  sqr_add_c2(a, 6, 1, c2, c3, c1);
+  sqr_add_c2(a, 5, 2, c2, c3, c1);
+  sqr_add_c2(a, 4, 3, c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  sqr_add_c(a, 4, c3, c1, c2);
+  sqr_add_c2(a, 5, 3, c3, c1, c2);
+  sqr_add_c2(a, 6, 2, c3, c1, c2);
+  sqr_add_c2(a, 7, 1, c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 7, 2, c1, c2, c3);
+  sqr_add_c2(a, 6, 3, c1, c2, c3);
+  sqr_add_c2(a, 5, 4, c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  sqr_add_c(a, 5, c2, c3, c1);
+  sqr_add_c2(a, 6, 4, c2, c3, c1);
+  sqr_add_c2(a, 7, 3, c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 7, 4, c3, c1, c2);
+  sqr_add_c2(a, 6, 5, c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  sqr_add_c(a, 6, c1, c2, c3);
+  sqr_add_c2(a, 7, 5, c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 6, c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  sqr_add_c(a, 7, c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+#undef mul_add
+#undef mul
+#undef sqr
+#undef mul_add_c
+#undef sqr_add_c
+#undef mul_add_c2
+#undef sqr_add_c2
+
+#endif  // !NO_ASM && X86_64 && (__GNUC__ || __clang__)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c
new file mode 100644
index 0000000..ce87862
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c	
@@ -0,0 +1,445 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../delocate.h"
+
+
+BIGNUM *BN_new(void) {
+  BIGNUM *bn = OPENSSL_malloc(sizeof(BIGNUM));
+
+  if (bn == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(bn, 0, sizeof(BIGNUM));
+  bn->flags = BN_FLG_MALLOCED;
+
+  return bn;
+}
+
+void BN_init(BIGNUM *bn) {
+  OPENSSL_memset(bn, 0, sizeof(BIGNUM));
+}
+
+void BN_free(BIGNUM *bn) {
+  if (bn == NULL) {
+    return;
+  }
+
+  if ((bn->flags & BN_FLG_STATIC_DATA) == 0) {
+    OPENSSL_free(bn->d);
+  }
+
+  if (bn->flags & BN_FLG_MALLOCED) {
+    OPENSSL_free(bn);
+  } else {
+    bn->d = NULL;
+  }
+}
+
+void BN_clear_free(BIGNUM *bn) {
+  char should_free;
+
+  if (bn == NULL) {
+    return;
+  }
+
+  if (bn->d != NULL) {
+    if ((bn->flags & BN_FLG_STATIC_DATA) == 0) {
+      OPENSSL_free(bn->d);
+    } else {
+      OPENSSL_cleanse(bn->d, bn->dmax * sizeof(bn->d[0]));
+    }
+  }
+
+  should_free = (bn->flags & BN_FLG_MALLOCED) != 0;
+  if (should_free) {
+    OPENSSL_free(bn);
+  } else {
+    OPENSSL_cleanse(bn, sizeof(BIGNUM));
+  }
+}
+
+BIGNUM *BN_dup(const BIGNUM *src) {
+  BIGNUM *copy;
+
+  if (src == NULL) {
+    return NULL;
+  }
+
+  copy = BN_new();
+  if (copy == NULL) {
+    return NULL;
+  }
+
+  if (!BN_copy(copy, src)) {
+    BN_free(copy);
+    return NULL;
+  }
+
+  return copy;
+}
+
+BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src) {
+  if (src == dest) {
+    return dest;
+  }
+
+  if (!bn_wexpand(dest, src->width)) {
+    return NULL;
+  }
+
+  OPENSSL_memcpy(dest->d, src->d, sizeof(src->d[0]) * src->width);
+
+  dest->width = src->width;
+  dest->neg = src->neg;
+  return dest;
+}
+
+void BN_clear(BIGNUM *bn) {
+  if (bn->d != NULL) {
+    OPENSSL_memset(bn->d, 0, bn->dmax * sizeof(bn->d[0]));
+  }
+
+  bn->width = 0;
+  bn->neg = 0;
+}
+
+DEFINE_METHOD_FUNCTION(BIGNUM, BN_value_one) {
+  static const BN_ULONG kOneLimbs[1] = { 1 };
+  out->d = (BN_ULONG*) kOneLimbs;
+  out->width = 1;
+  out->dmax = 1;
+  out->neg = 0;
+  out->flags = BN_FLG_STATIC_DATA;
+}
+
+// BN_num_bits_word returns the minimum number of bits needed to represent the
+// value in |l|.
+unsigned BN_num_bits_word(BN_ULONG l) {
+  // |BN_num_bits| is often called on RSA prime factors. These have public bit
+  // lengths, but all bits beyond the high bit are secret, so count bits in
+  // constant time.
+  BN_ULONG x, mask;
+  int bits = (l != 0);
+
+#if BN_BITS2 > 32
+  // Look at the upper half of |x|. |x| is at most 64 bits long.
+  x = l >> 32;
+  // Set |mask| to all ones if |x| (the top 32 bits of |l|) is non-zero and all
+  // all zeros otherwise.
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  // If |x| is non-zero, the lower half is included in the bit count in full,
+  // and we count the upper half. Otherwise, we count the lower half.
+  bits += 32 & mask;
+  l ^= (x ^ l) & mask;  // |l| is |x| if |mask| and remains |l| otherwise.
+#endif
+
+  // The remaining blocks are analogous iterations at lower powers of two.
+  x = l >> 16;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 16 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 8;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 8 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 4;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 4 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 2;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 2 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 1;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 1 & mask;
+
+  return bits;
+}
+
+unsigned BN_num_bits(const BIGNUM *bn) {
+  const int width = bn_minimal_width(bn);
+  if (width == 0) {
+    return 0;
+  }
+
+  return (width - 1) * BN_BITS2 + BN_num_bits_word(bn->d[width - 1]);
+}
+
+unsigned BN_num_bytes(const BIGNUM *bn) {
+  return (BN_num_bits(bn) + 7) / 8;
+}
+
+void BN_zero(BIGNUM *bn) {
+  bn->width = bn->neg = 0;
+}
+
+int BN_one(BIGNUM *bn) {
+  return BN_set_word(bn, 1);
+}
+
+int BN_set_word(BIGNUM *bn, BN_ULONG value) {
+  if (value == 0) {
+    BN_zero(bn);
+    return 1;
+  }
+
+  if (!bn_wexpand(bn, 1)) {
+    return 0;
+  }
+
+  bn->neg = 0;
+  bn->d[0] = value;
+  bn->width = 1;
+  return 1;
+}
+
+int BN_set_u64(BIGNUM *bn, uint64_t value) {
+#if BN_BITS2 == 64
+  return BN_set_word(bn, value);
+#elif BN_BITS2 == 32
+  if (value <= BN_MASK2) {
+    return BN_set_word(bn, (BN_ULONG)value);
+  }
+
+  if (!bn_wexpand(bn, 2)) {
+    return 0;
+  }
+
+  bn->neg = 0;
+  bn->d[0] = (BN_ULONG)value;
+  bn->d[1] = (BN_ULONG)(value >> 32);
+  bn->width = 2;
+  return 1;
+#else
+#error "BN_BITS2 must be 32 or 64."
+#endif
+}
+
+int bn_set_words(BIGNUM *bn, const BN_ULONG *words, size_t num) {
+  if (!bn_wexpand(bn, num)) {
+    return 0;
+  }
+  OPENSSL_memmove(bn->d, words, num * sizeof(BN_ULONG));
+  // |bn_wexpand| verified that |num| isn't too large.
+  bn->width = (int)num;
+  bn->neg = 0;
+  return 1;
+}
+
+int bn_fits_in_words(const BIGNUM *bn, size_t num) {
+  // All words beyond |num| must be zero.
+  BN_ULONG mask = 0;
+  for (size_t i = num; i < (size_t)bn->width; i++) {
+    mask |= bn->d[i];
+  }
+  return mask == 0;
+}
+
+int bn_copy_words(BN_ULONG *out, size_t num, const BIGNUM *bn) {
+  if (bn->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  size_t width = (size_t)bn->width;
+  if (width > num) {
+    if (!bn_fits_in_words(bn, num)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+      return 0;
+    }
+    width = num;
+  }
+
+  OPENSSL_memset(out, 0, sizeof(BN_ULONG) * num);
+  OPENSSL_memcpy(out, bn->d, sizeof(BN_ULONG) * width);
+  return 1;
+}
+
+int BN_is_negative(const BIGNUM *bn) {
+  return bn->neg != 0;
+}
+
+void BN_set_negative(BIGNUM *bn, int sign) {
+  if (sign && !BN_is_zero(bn)) {
+    bn->neg = 1;
+  } else {
+    bn->neg = 0;
+  }
+}
+
+int bn_wexpand(BIGNUM *bn, size_t words) {
+  BN_ULONG *a;
+
+  if (words <= (size_t)bn->dmax) {
+    return 1;
+  }
+
+  if (words > (INT_MAX / (4 * BN_BITS2))) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+
+  if (bn->flags & BN_FLG_STATIC_DATA) {
+    OPENSSL_PUT_ERROR(BN, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
+    return 0;
+  }
+
+  a = OPENSSL_malloc(sizeof(BN_ULONG) * words);
+  if (a == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(a, bn->d, sizeof(BN_ULONG) * bn->width);
+
+  OPENSSL_free(bn->d);
+  bn->d = a;
+  bn->dmax = (int)words;
+
+  return 1;
+}
+
+int bn_expand(BIGNUM *bn, size_t bits) {
+  if (bits + BN_BITS2 - 1 < bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  return bn_wexpand(bn, (bits+BN_BITS2-1)/BN_BITS2);
+}
+
+int bn_resize_words(BIGNUM *bn, size_t words) {
+#if defined(OPENSSL_PPC64LE)
+  // This is a workaround for a miscompilation bug in Clang 7.0.1 on POWER.
+  // The unittests catch the miscompilation, if it occurs, and it manifests
+  // as a crash in |bn_fits_in_words|.
+  //
+  // The bug only triggers if building in FIPS mode and with -O3. Clang 8.0.1
+  // has the same bug but this workaround is not effective there---I've not
+  // been able to find a workaround for 8.0.1.
+  //
+  // At the time of writing (2019-08-08), Clang git does *not* have this bug
+  // and does not need this workaroud. The current git version should go on to
+  // be Clang 10 thus, once we can depend on that, this can be removed.
+  if (value_barrier_w((size_t)bn->width == words)) {
+    return 1;
+  }
+#endif
+
+  if ((size_t)bn->width <= words) {
+    if (!bn_wexpand(bn, words)) {
+      return 0;
+    }
+    OPENSSL_memset(bn->d + bn->width, 0,
+                   (words - bn->width) * sizeof(BN_ULONG));
+    bn->width = words;
+    return 1;
+  }
+
+  // All words beyond the new width must be zero.
+  if (!bn_fits_in_words(bn, words)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  bn->width = words;
+  return 1;
+}
+
+void bn_select_words(BN_ULONG *r, BN_ULONG mask, const BN_ULONG *a,
+                     const BN_ULONG *b, size_t num) {
+  for (size_t i = 0; i < num; i++) {
+    OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                          "crypto_word_t is too small");
+    r[i] = constant_time_select_w(mask, a[i], b[i]);
+  }
+}
+
+int bn_minimal_width(const BIGNUM *bn) {
+  int ret = bn->width;
+  while (ret > 0 && bn->d[ret - 1] == 0) {
+    ret--;
+  }
+  return ret;
+}
+
+void bn_set_minimal_width(BIGNUM *bn) {
+  bn->width = bn_minimal_width(bn);
+  if (bn->width == 0) {
+    bn->neg = 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c.grpc_back
new file mode 100644
index 0000000..e3f1c90
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bn.c.grpc_back	
@@ -0,0 +1,445 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../delocate.h"
+
+
+BIGNUM *BN_new(void) {
+  BIGNUM *bn = OPENSSL_malloc(sizeof(BIGNUM));
+
+  if (bn == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(bn, 0, sizeof(BIGNUM));
+  bn->flags = BN_FLG_MALLOCED;
+
+  return bn;
+}
+
+void BN_init(BIGNUM *bn) {
+  OPENSSL_memset(bn, 0, sizeof(BIGNUM));
+}
+
+void BN_free(BIGNUM *bn) {
+  if (bn == NULL) {
+    return;
+  }
+
+  if ((bn->flags & BN_FLG_STATIC_DATA) == 0) {
+    OPENSSL_free(bn->d);
+  }
+
+  if (bn->flags & BN_FLG_MALLOCED) {
+    OPENSSL_free(bn);
+  } else {
+    bn->d = NULL;
+  }
+}
+
+void BN_clear_free(BIGNUM *bn) {
+  char should_free;
+
+  if (bn == NULL) {
+    return;
+  }
+
+  if (bn->d != NULL) {
+    if ((bn->flags & BN_FLG_STATIC_DATA) == 0) {
+      OPENSSL_free(bn->d);
+    } else {
+      OPENSSL_cleanse(bn->d, bn->dmax * sizeof(bn->d[0]));
+    }
+  }
+
+  should_free = (bn->flags & BN_FLG_MALLOCED) != 0;
+  if (should_free) {
+    OPENSSL_free(bn);
+  } else {
+    OPENSSL_cleanse(bn, sizeof(BIGNUM));
+  }
+}
+
+BIGNUM *BN_dup(const BIGNUM *src) {
+  BIGNUM *copy;
+
+  if (src == NULL) {
+    return NULL;
+  }
+
+  copy = BN_new();
+  if (copy == NULL) {
+    return NULL;
+  }
+
+  if (!BN_copy(copy, src)) {
+    BN_free(copy);
+    return NULL;
+  }
+
+  return copy;
+}
+
+BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src) {
+  if (src == dest) {
+    return dest;
+  }
+
+  if (!bn_wexpand(dest, src->width)) {
+    return NULL;
+  }
+
+  OPENSSL_memcpy(dest->d, src->d, sizeof(src->d[0]) * src->width);
+
+  dest->width = src->width;
+  dest->neg = src->neg;
+  return dest;
+}
+
+void BN_clear(BIGNUM *bn) {
+  if (bn->d != NULL) {
+    OPENSSL_memset(bn->d, 0, bn->dmax * sizeof(bn->d[0]));
+  }
+
+  bn->width = 0;
+  bn->neg = 0;
+}
+
+DEFINE_METHOD_FUNCTION(BIGNUM, BN_value_one) {
+  static const BN_ULONG kOneLimbs[1] = { 1 };
+  out->d = (BN_ULONG*) kOneLimbs;
+  out->width = 1;
+  out->dmax = 1;
+  out->neg = 0;
+  out->flags = BN_FLG_STATIC_DATA;
+}
+
+// BN_num_bits_word returns the minimum number of bits needed to represent the
+// value in |l|.
+unsigned BN_num_bits_word(BN_ULONG l) {
+  // |BN_num_bits| is often called on RSA prime factors. These have public bit
+  // lengths, but all bits beyond the high bit are secret, so count bits in
+  // constant time.
+  BN_ULONG x, mask;
+  int bits = (l != 0);
+
+#if BN_BITS2 > 32
+  // Look at the upper half of |x|. |x| is at most 64 bits long.
+  x = l >> 32;
+  // Set |mask| to all ones if |x| (the top 32 bits of |l|) is non-zero and all
+  // all zeros otherwise.
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  // If |x| is non-zero, the lower half is included in the bit count in full,
+  // and we count the upper half. Otherwise, we count the lower half.
+  bits += 32 & mask;
+  l ^= (x ^ l) & mask;  // |l| is |x| if |mask| and remains |l| otherwise.
+#endif
+
+  // The remaining blocks are analogous iterations at lower powers of two.
+  x = l >> 16;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 16 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 8;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 8 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 4;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 4 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 2;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 2 & mask;
+  l ^= (x ^ l) & mask;
+
+  x = l >> 1;
+  mask = 0u - x;
+  mask = (0u - (mask >> (BN_BITS2 - 1)));
+  bits += 1 & mask;
+
+  return bits;
+}
+
+unsigned BN_num_bits(const BIGNUM *bn) {
+  const int width = bn_minimal_width(bn);
+  if (width == 0) {
+    return 0;
+  }
+
+  return (width - 1) * BN_BITS2 + BN_num_bits_word(bn->d[width - 1]);
+}
+
+unsigned BN_num_bytes(const BIGNUM *bn) {
+  return (BN_num_bits(bn) + 7) / 8;
+}
+
+void BN_zero(BIGNUM *bn) {
+  bn->width = bn->neg = 0;
+}
+
+int BN_one(BIGNUM *bn) {
+  return BN_set_word(bn, 1);
+}
+
+int BN_set_word(BIGNUM *bn, BN_ULONG value) {
+  if (value == 0) {
+    BN_zero(bn);
+    return 1;
+  }
+
+  if (!bn_wexpand(bn, 1)) {
+    return 0;
+  }
+
+  bn->neg = 0;
+  bn->d[0] = value;
+  bn->width = 1;
+  return 1;
+}
+
+int BN_set_u64(BIGNUM *bn, uint64_t value) {
+#if BN_BITS2 == 64
+  return BN_set_word(bn, value);
+#elif BN_BITS2 == 32
+  if (value <= BN_MASK2) {
+    return BN_set_word(bn, (BN_ULONG)value);
+  }
+
+  if (!bn_wexpand(bn, 2)) {
+    return 0;
+  }
+
+  bn->neg = 0;
+  bn->d[0] = (BN_ULONG)value;
+  bn->d[1] = (BN_ULONG)(value >> 32);
+  bn->width = 2;
+  return 1;
+#else
+#error "BN_BITS2 must be 32 or 64."
+#endif
+}
+
+int bn_set_words(BIGNUM *bn, const BN_ULONG *words, size_t num) {
+  if (!bn_wexpand(bn, num)) {
+    return 0;
+  }
+  OPENSSL_memmove(bn->d, words, num * sizeof(BN_ULONG));
+  // |bn_wexpand| verified that |num| isn't too large.
+  bn->width = (int)num;
+  bn->neg = 0;
+  return 1;
+}
+
+int bn_fits_in_words(const BIGNUM *bn, size_t num) {
+  // All words beyond |num| must be zero.
+  BN_ULONG mask = 0;
+  for (size_t i = num; i < (size_t)bn->width; i++) {
+    mask |= bn->d[i];
+  }
+  return mask == 0;
+}
+
+int bn_copy_words(BN_ULONG *out, size_t num, const BIGNUM *bn) {
+  if (bn->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  size_t width = (size_t)bn->width;
+  if (width > num) {
+    if (!bn_fits_in_words(bn, num)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+      return 0;
+    }
+    width = num;
+  }
+
+  OPENSSL_memset(out, 0, sizeof(BN_ULONG) * num);
+  OPENSSL_memcpy(out, bn->d, sizeof(BN_ULONG) * width);
+  return 1;
+}
+
+int BN_is_negative(const BIGNUM *bn) {
+  return bn->neg != 0;
+}
+
+void BN_set_negative(BIGNUM *bn, int sign) {
+  if (sign && !BN_is_zero(bn)) {
+    bn->neg = 1;
+  } else {
+    bn->neg = 0;
+  }
+}
+
+int bn_wexpand(BIGNUM *bn, size_t words) {
+  BN_ULONG *a;
+
+  if (words <= (size_t)bn->dmax) {
+    return 1;
+  }
+
+  if (words > (INT_MAX / (4 * BN_BITS2))) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+
+  if (bn->flags & BN_FLG_STATIC_DATA) {
+    OPENSSL_PUT_ERROR(BN, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
+    return 0;
+  }
+
+  a = OPENSSL_malloc(sizeof(BN_ULONG) * words);
+  if (a == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(a, bn->d, sizeof(BN_ULONG) * bn->width);
+
+  OPENSSL_free(bn->d);
+  bn->d = a;
+  bn->dmax = (int)words;
+
+  return 1;
+}
+
+int bn_expand(BIGNUM *bn, size_t bits) {
+  if (bits + BN_BITS2 - 1 < bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  return bn_wexpand(bn, (bits+BN_BITS2-1)/BN_BITS2);
+}
+
+int bn_resize_words(BIGNUM *bn, size_t words) {
+#if defined(OPENSSL_PPC64LE)
+  // This is a workaround for a miscompilation bug in Clang 7.0.1 on POWER.
+  // The unittests catch the miscompilation, if it occurs, and it manifests
+  // as a crash in |bn_fits_in_words|.
+  //
+  // The bug only triggers if building in FIPS mode and with -O3. Clang 8.0.1
+  // has the same bug but this workaround is not effective there---I've not
+  // been able to find a workaround for 8.0.1.
+  //
+  // At the time of writing (2019-08-08), Clang git does *not* have this bug
+  // and does not need this workaroud. The current git version should go on to
+  // be Clang 10 thus, once we can depend on that, this can be removed.
+  if (value_barrier_w((size_t)bn->width == words)) {
+    return 1;
+  }
+#endif
+
+  if ((size_t)bn->width <= words) {
+    if (!bn_wexpand(bn, words)) {
+      return 0;
+    }
+    OPENSSL_memset(bn->d + bn->width, 0,
+                   (words - bn->width) * sizeof(BN_ULONG));
+    bn->width = words;
+    return 1;
+  }
+
+  // All words beyond the new width must be zero.
+  if (!bn_fits_in_words(bn, words)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+  bn->width = words;
+  return 1;
+}
+
+void bn_select_words(BN_ULONG *r, BN_ULONG mask, const BN_ULONG *a,
+                     const BN_ULONG *b, size_t num) {
+  for (size_t i = 0; i < num; i++) {
+    OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                          "crypto_word_t is too small");
+    r[i] = constant_time_select_w(mask, a[i], b[i]);
+  }
+}
+
+int bn_minimal_width(const BIGNUM *bn) {
+  int ret = bn->width;
+  while (ret > 0 && bn->d[ret - 1] == 0) {
+    ret--;
+  }
+  return ret;
+}
+
+void bn_set_minimal_width(BIGNUM *bn) {
+  bn->width = bn_minimal_width(bn);
+  if (bn->width == 0) {
+    bn->neg = 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c
new file mode 100644
index 0000000..a2fde19
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c	
@@ -0,0 +1,230 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include "internal.h"
+
+
+BIGNUM *BN_bin2bn(const uint8_t *in, size_t len, BIGNUM *ret) {
+  size_t num_words;
+  unsigned m;
+  BN_ULONG word = 0;
+  BIGNUM *bn = NULL;
+
+  if (ret == NULL) {
+    ret = bn = BN_new();
+  }
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (len == 0) {
+    ret->width = 0;
+    return ret;
+  }
+
+  num_words = ((len - 1) / BN_BYTES) + 1;
+  m = (len - 1) % BN_BYTES;
+  if (!bn_wexpand(ret, num_words)) {
+    if (bn) {
+      BN_free(bn);
+    }
+    return NULL;
+  }
+
+  // |bn_wexpand| must check bounds on |num_words| to write it into
+  // |ret->dmax|.
+  assert(num_words <= INT_MAX);
+  ret->width = (int)num_words;
+  ret->neg = 0;
+
+  while (len--) {
+    word = (word << 8) | *(in++);
+    if (m-- == 0) {
+      ret->d[--num_words] = word;
+      word = 0;
+      m = BN_BYTES - 1;
+    }
+  }
+
+  return ret;
+}
+
+BIGNUM *BN_le2bn(const uint8_t *in, size_t len, BIGNUM *ret) {
+  BIGNUM *bn = NULL;
+  if (ret == NULL) {
+    bn = BN_new();
+    ret = bn;
+  }
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (len == 0) {
+    ret->width = 0;
+    ret->neg = 0;
+    return ret;
+  }
+
+  // Reserve enough space in |ret|.
+  size_t num_words = ((len - 1) / BN_BYTES) + 1;
+  if (!bn_wexpand(ret, num_words)) {
+    BN_free(bn);
+    return NULL;
+  }
+  ret->width = num_words;
+
+  // Make sure the top bytes will be zeroed.
+  ret->d[num_words - 1] = 0;
+
+  // We only support little-endian platforms, so we can simply memcpy the
+  // internal representation.
+  OPENSSL_memcpy(ret->d, in, len);
+  return ret;
+}
+
+size_t BN_bn2bin(const BIGNUM *in, uint8_t *out) {
+  size_t n, i;
+  BN_ULONG l;
+
+  n = i = BN_num_bytes(in);
+  while (i--) {
+    l = in->d[i / BN_BYTES];
+    *(out++) = (unsigned char)(l >> (8 * (i % BN_BYTES))) & 0xff;
+  }
+  return n;
+}
+
+static int fits_in_bytes(const uint8_t *bytes, size_t num_bytes, size_t len) {
+  uint8_t mask = 0;
+  for (size_t i = len; i < num_bytes; i++) {
+    mask |= bytes[i];
+  }
+  return mask == 0;
+}
+
+int BN_bn2le_padded(uint8_t *out, size_t len, const BIGNUM *in) {
+  const uint8_t *bytes = (const uint8_t *)in->d;
+  size_t num_bytes = in->width * BN_BYTES;
+  if (len < num_bytes) {
+    if (!fits_in_bytes(bytes, num_bytes, len)) {
+      return 0;
+    }
+    num_bytes = len;
+  }
+
+  // We only support little-endian platforms, so we can simply memcpy into the
+  // internal representation.
+  OPENSSL_memcpy(out, bytes, num_bytes);
+  // Pad out the rest of the buffer with zeroes.
+  OPENSSL_memset(out + num_bytes, 0, len - num_bytes);
+  return 1;
+}
+
+int BN_bn2bin_padded(uint8_t *out, size_t len, const BIGNUM *in) {
+  const uint8_t *bytes = (const uint8_t *)in->d;
+  size_t num_bytes = in->width * BN_BYTES;
+  if (len < num_bytes) {
+    if (!fits_in_bytes(bytes, num_bytes, len)) {
+      return 0;
+    }
+    num_bytes = len;
+  }
+
+  // We only support little-endian platforms, so we can simply write the buffer
+  // in reverse.
+  for (size_t i = 0; i < num_bytes; i++) {
+    out[len - i - 1] = bytes[i];
+  }
+  // Pad out the rest of the buffer with zeroes.
+  OPENSSL_memset(out, 0, len - num_bytes);
+  return 1;
+}
+
+BN_ULONG BN_get_word(const BIGNUM *bn) {
+  switch (bn_minimal_width(bn)) {
+    case 0:
+      return 0;
+    case 1:
+      return bn->d[0];
+    default:
+      return BN_MASK2;
+  }
+}
+
+int BN_get_u64(const BIGNUM *bn, uint64_t *out) {
+  switch (bn_minimal_width(bn)) {
+    case 0:
+      *out = 0;
+      return 1;
+    case 1:
+      *out = bn->d[0];
+      return 1;
+#if defined(OPENSSL_32_BIT)
+    case 2:
+      *out = (uint64_t) bn->d[0] | (((uint64_t) bn->d[1]) << 32);
+      return 1;
+#endif
+    default:
+      return 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c.grpc_back
new file mode 100644
index 0000000..56241e3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/bytes.c.grpc_back	
@@ -0,0 +1,230 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include "internal.h"
+
+
+BIGNUM *BN_bin2bn(const uint8_t *in, size_t len, BIGNUM *ret) {
+  size_t num_words;
+  unsigned m;
+  BN_ULONG word = 0;
+  BIGNUM *bn = NULL;
+
+  if (ret == NULL) {
+    ret = bn = BN_new();
+  }
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (len == 0) {
+    ret->width = 0;
+    return ret;
+  }
+
+  num_words = ((len - 1) / BN_BYTES) + 1;
+  m = (len - 1) % BN_BYTES;
+  if (!bn_wexpand(ret, num_words)) {
+    if (bn) {
+      BN_free(bn);
+    }
+    return NULL;
+  }
+
+  // |bn_wexpand| must check bounds on |num_words| to write it into
+  // |ret->dmax|.
+  assert(num_words <= INT_MAX);
+  ret->width = (int)num_words;
+  ret->neg = 0;
+
+  while (len--) {
+    word = (word << 8) | *(in++);
+    if (m-- == 0) {
+      ret->d[--num_words] = word;
+      word = 0;
+      m = BN_BYTES - 1;
+    }
+  }
+
+  return ret;
+}
+
+BIGNUM *BN_le2bn(const uint8_t *in, size_t len, BIGNUM *ret) {
+  BIGNUM *bn = NULL;
+  if (ret == NULL) {
+    bn = BN_new();
+    ret = bn;
+  }
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (len == 0) {
+    ret->width = 0;
+    ret->neg = 0;
+    return ret;
+  }
+
+  // Reserve enough space in |ret|.
+  size_t num_words = ((len - 1) / BN_BYTES) + 1;
+  if (!bn_wexpand(ret, num_words)) {
+    BN_free(bn);
+    return NULL;
+  }
+  ret->width = num_words;
+
+  // Make sure the top bytes will be zeroed.
+  ret->d[num_words - 1] = 0;
+
+  // We only support little-endian platforms, so we can simply memcpy the
+  // internal representation.
+  OPENSSL_memcpy(ret->d, in, len);
+  return ret;
+}
+
+size_t BN_bn2bin(const BIGNUM *in, uint8_t *out) {
+  size_t n, i;
+  BN_ULONG l;
+
+  n = i = BN_num_bytes(in);
+  while (i--) {
+    l = in->d[i / BN_BYTES];
+    *(out++) = (unsigned char)(l >> (8 * (i % BN_BYTES))) & 0xff;
+  }
+  return n;
+}
+
+static int fits_in_bytes(const uint8_t *bytes, size_t num_bytes, size_t len) {
+  uint8_t mask = 0;
+  for (size_t i = len; i < num_bytes; i++) {
+    mask |= bytes[i];
+  }
+  return mask == 0;
+}
+
+int BN_bn2le_padded(uint8_t *out, size_t len, const BIGNUM *in) {
+  const uint8_t *bytes = (const uint8_t *)in->d;
+  size_t num_bytes = in->width * BN_BYTES;
+  if (len < num_bytes) {
+    if (!fits_in_bytes(bytes, num_bytes, len)) {
+      return 0;
+    }
+    num_bytes = len;
+  }
+
+  // We only support little-endian platforms, so we can simply memcpy into the
+  // internal representation.
+  OPENSSL_memcpy(out, bytes, num_bytes);
+  // Pad out the rest of the buffer with zeroes.
+  OPENSSL_memset(out + num_bytes, 0, len - num_bytes);
+  return 1;
+}
+
+int BN_bn2bin_padded(uint8_t *out, size_t len, const BIGNUM *in) {
+  const uint8_t *bytes = (const uint8_t *)in->d;
+  size_t num_bytes = in->width * BN_BYTES;
+  if (len < num_bytes) {
+    if (!fits_in_bytes(bytes, num_bytes, len)) {
+      return 0;
+    }
+    num_bytes = len;
+  }
+
+  // We only support little-endian platforms, so we can simply write the buffer
+  // in reverse.
+  for (size_t i = 0; i < num_bytes; i++) {
+    out[len - i - 1] = bytes[i];
+  }
+  // Pad out the rest of the buffer with zeroes.
+  OPENSSL_memset(out, 0, len - num_bytes);
+  return 1;
+}
+
+BN_ULONG BN_get_word(const BIGNUM *bn) {
+  switch (bn_minimal_width(bn)) {
+    case 0:
+      return 0;
+    case 1:
+      return bn->d[0];
+    default:
+      return BN_MASK2;
+  }
+}
+
+int BN_get_u64(const BIGNUM *bn, uint64_t *out) {
+  switch (bn_minimal_width(bn)) {
+    case 0:
+      *out = 0;
+      return 1;
+    case 1:
+      *out = bn->d[0];
+      return 1;
+#if defined(OPENSSL_32_BIT)
+    case 2:
+      *out = (uint64_t) bn->d[0] | (((uint64_t) bn->d[1]) << 32);
+      return 1;
+#endif
+    default:
+      return 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c
new file mode 100644
index 0000000..284ef07
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c	
@@ -0,0 +1,200 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+static int bn_cmp_words_consttime(const BN_ULONG *a, size_t a_len,
+                                  const BN_ULONG *b, size_t b_len) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  int ret = 0;
+  // Process the common words in little-endian order.
+  size_t min = a_len < b_len ? a_len : b_len;
+  for (size_t i = 0; i < min; i++) {
+    crypto_word_t eq = constant_time_eq_w(a[i], b[i]);
+    crypto_word_t lt = constant_time_lt_w(a[i], b[i]);
+    ret =
+        constant_time_select_int(eq, ret, constant_time_select_int(lt, -1, 1));
+  }
+
+  // If |a| or |b| has non-zero words beyond |min|, they take precedence.
+  if (a_len < b_len) {
+    crypto_word_t mask = 0;
+    for (size_t i = a_len; i < b_len; i++) {
+      mask |= b[i];
+    }
+    ret = constant_time_select_int(constant_time_is_zero_w(mask), ret, -1);
+  } else if (b_len < a_len) {
+    crypto_word_t mask = 0;
+    for (size_t i = b_len; i < a_len; i++) {
+      mask |= a[i];
+    }
+    ret = constant_time_select_int(constant_time_is_zero_w(mask), ret, 1);
+  }
+
+  return ret;
+}
+
+int BN_ucmp(const BIGNUM *a, const BIGNUM *b) {
+  return bn_cmp_words_consttime(a->d, a->width, b->d, b->width);
+}
+
+int BN_cmp(const BIGNUM *a, const BIGNUM *b) {
+  if ((a == NULL) || (b == NULL)) {
+    if (a != NULL) {
+      return -1;
+    } else if (b != NULL) {
+      return 1;
+    } else {
+      return 0;
+    }
+  }
+
+  // We do not attempt to process the sign bit in constant time. Negative
+  // |BIGNUM|s should never occur in crypto, only calculators.
+  if (a->neg != b->neg) {
+    if (a->neg) {
+      return -1;
+    }
+    return 1;
+  }
+
+  int ret = BN_ucmp(a, b);
+  return a->neg ? -ret : ret;
+}
+
+int bn_less_than_words(const BN_ULONG *a, const BN_ULONG *b, size_t len) {
+  return bn_cmp_words_consttime(a, len, b, len) < 0;
+}
+
+int BN_abs_is_word(const BIGNUM *bn, BN_ULONG w) {
+  if (bn->width == 0) {
+    return w == 0;
+  }
+  BN_ULONG mask = bn->d[0] ^ w;
+  for (int i = 1; i < bn->width; i++) {
+    mask |= bn->d[i];
+  }
+  return mask == 0;
+}
+
+int BN_cmp_word(const BIGNUM *a, BN_ULONG b) {
+  BIGNUM b_bn;
+  BN_init(&b_bn);
+
+  b_bn.d = &b;
+  b_bn.width = b > 0;
+  b_bn.dmax = 1;
+  b_bn.flags = BN_FLG_STATIC_DATA;
+  return BN_cmp(a, &b_bn);
+}
+
+int BN_is_zero(const BIGNUM *bn) {
+  return bn_fits_in_words(bn, 0);
+}
+
+int BN_is_one(const BIGNUM *bn) {
+  return bn->neg == 0 && BN_abs_is_word(bn, 1);
+}
+
+int BN_is_word(const BIGNUM *bn, BN_ULONG w) {
+  return BN_abs_is_word(bn, w) && (w == 0 || bn->neg == 0);
+}
+
+int BN_is_odd(const BIGNUM *bn) {
+  return bn->width > 0 && (bn->d[0] & 1) == 1;
+}
+
+int BN_is_pow2(const BIGNUM *bn) {
+  int width = bn_minimal_width(bn);
+  if (width == 0 || bn->neg) {
+    return 0;
+  }
+
+  for (int i = 0; i < width - 1; i++) {
+    if (bn->d[i] != 0) {
+      return 0;
+    }
+  }
+
+  return 0 == (bn->d[width-1] & (bn->d[width-1] - 1));
+}
+
+int BN_equal_consttime(const BIGNUM *a, const BIGNUM *b) {
+  BN_ULONG mask = 0;
+  // If |a| or |b| has more words than the other, all those words must be zero.
+  for (int i = a->width; i < b->width; i++) {
+    mask |= b->d[i];
+  }
+  for (int i = b->width; i < a->width; i++) {
+    mask |= a->d[i];
+  }
+  // Common words must match.
+  int min = a->width < b->width ? a->width : b->width;
+  for (int i = 0; i < min; i++) {
+    mask |= (a->d[i] ^ b->d[i]);
+  }
+  // The sign bit must match.
+  mask |= (a->neg ^ b->neg);
+  return mask == 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c.grpc_back
new file mode 100644
index 0000000..fe478b6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/cmp.c.grpc_back	
@@ -0,0 +1,200 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+static int bn_cmp_words_consttime(const BN_ULONG *a, size_t a_len,
+                                  const BN_ULONG *b, size_t b_len) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  int ret = 0;
+  // Process the common words in little-endian order.
+  size_t min = a_len < b_len ? a_len : b_len;
+  for (size_t i = 0; i < min; i++) {
+    crypto_word_t eq = constant_time_eq_w(a[i], b[i]);
+    crypto_word_t lt = constant_time_lt_w(a[i], b[i]);
+    ret =
+        constant_time_select_int(eq, ret, constant_time_select_int(lt, -1, 1));
+  }
+
+  // If |a| or |b| has non-zero words beyond |min|, they take precedence.
+  if (a_len < b_len) {
+    crypto_word_t mask = 0;
+    for (size_t i = a_len; i < b_len; i++) {
+      mask |= b[i];
+    }
+    ret = constant_time_select_int(constant_time_is_zero_w(mask), ret, -1);
+  } else if (b_len < a_len) {
+    crypto_word_t mask = 0;
+    for (size_t i = b_len; i < a_len; i++) {
+      mask |= a[i];
+    }
+    ret = constant_time_select_int(constant_time_is_zero_w(mask), ret, 1);
+  }
+
+  return ret;
+}
+
+int BN_ucmp(const BIGNUM *a, const BIGNUM *b) {
+  return bn_cmp_words_consttime(a->d, a->width, b->d, b->width);
+}
+
+int BN_cmp(const BIGNUM *a, const BIGNUM *b) {
+  if ((a == NULL) || (b == NULL)) {
+    if (a != NULL) {
+      return -1;
+    } else if (b != NULL) {
+      return 1;
+    } else {
+      return 0;
+    }
+  }
+
+  // We do not attempt to process the sign bit in constant time. Negative
+  // |BIGNUM|s should never occur in crypto, only calculators.
+  if (a->neg != b->neg) {
+    if (a->neg) {
+      return -1;
+    }
+    return 1;
+  }
+
+  int ret = BN_ucmp(a, b);
+  return a->neg ? -ret : ret;
+}
+
+int bn_less_than_words(const BN_ULONG *a, const BN_ULONG *b, size_t len) {
+  return bn_cmp_words_consttime(a, len, b, len) < 0;
+}
+
+int BN_abs_is_word(const BIGNUM *bn, BN_ULONG w) {
+  if (bn->width == 0) {
+    return w == 0;
+  }
+  BN_ULONG mask = bn->d[0] ^ w;
+  for (int i = 1; i < bn->width; i++) {
+    mask |= bn->d[i];
+  }
+  return mask == 0;
+}
+
+int BN_cmp_word(const BIGNUM *a, BN_ULONG b) {
+  BIGNUM b_bn;
+  BN_init(&b_bn);
+
+  b_bn.d = &b;
+  b_bn.width = b > 0;
+  b_bn.dmax = 1;
+  b_bn.flags = BN_FLG_STATIC_DATA;
+  return BN_cmp(a, &b_bn);
+}
+
+int BN_is_zero(const BIGNUM *bn) {
+  return bn_fits_in_words(bn, 0);
+}
+
+int BN_is_one(const BIGNUM *bn) {
+  return bn->neg == 0 && BN_abs_is_word(bn, 1);
+}
+
+int BN_is_word(const BIGNUM *bn, BN_ULONG w) {
+  return BN_abs_is_word(bn, w) && (w == 0 || bn->neg == 0);
+}
+
+int BN_is_odd(const BIGNUM *bn) {
+  return bn->width > 0 && (bn->d[0] & 1) == 1;
+}
+
+int BN_is_pow2(const BIGNUM *bn) {
+  int width = bn_minimal_width(bn);
+  if (width == 0 || bn->neg) {
+    return 0;
+  }
+
+  for (int i = 0; i < width - 1; i++) {
+    if (bn->d[i] != 0) {
+      return 0;
+    }
+  }
+
+  return 0 == (bn->d[width-1] & (bn->d[width-1] - 1));
+}
+
+int BN_equal_consttime(const BIGNUM *a, const BIGNUM *b) {
+  BN_ULONG mask = 0;
+  // If |a| or |b| has more words than the other, all those words must be zero.
+  for (int i = a->width; i < b->width; i++) {
+    mask |= b->d[i];
+  }
+  for (int i = b->width; i < a->width; i++) {
+    mask |= a->d[i];
+  }
+  // Common words must match.
+  int min = a->width < b->width ? a->width : b->width;
+  for (int i = 0; i < min; i++) {
+    mask |= (a->d[i] ^ b->d[i]);
+  }
+  // The sign bit must match.
+  mask |= (a->neg ^ b->neg);
+  return mask == 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c
new file mode 100644
index 0000000..c9ef147
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c	
@@ -0,0 +1,236 @@
+/* Written by Ulf Moeller for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../../internal.h"
+
+
+// The stack frame info is resizing, set a first-time expansion size;
+#define BN_CTX_START_FRAMES 32
+
+
+// BN_STACK
+
+// A |BN_STACK| is a stack of |size_t| values.
+typedef struct {
+  // Array of indexes into |ctx->bignums|.
+  size_t *indexes;
+  // Number of stack frames, and the size of the allocated array
+  size_t depth, size;
+} BN_STACK;
+
+static void BN_STACK_init(BN_STACK *);
+static void BN_STACK_cleanup(BN_STACK *);
+static int BN_STACK_push(BN_STACK *, size_t idx);
+static size_t BN_STACK_pop(BN_STACK *);
+
+
+// BN_CTX
+
+DEFINE_STACK_OF(BIGNUM)
+
+// The opaque BN_CTX type
+struct bignum_ctx {
+  // bignums is the stack of |BIGNUM|s managed by this |BN_CTX|.
+  STACK_OF(BIGNUM) *bignums;
+  // stack is the stack of |BN_CTX_start| frames. It is the value of |used| at
+  // the time |BN_CTX_start| was called.
+  BN_STACK stack;
+  // used is the number of |BIGNUM|s from |bignums| that have been used.
+  size_t used;
+  // error is one if any operation on this |BN_CTX| failed. All subsequent
+  // operations will fail.
+  char error;
+  // defer_error is one if an operation on this |BN_CTX| has failed, but no
+  // error has been pushed to the queue yet. This is used to defer errors from
+  // |BN_CTX_start| to |BN_CTX_get|.
+  char defer_error;
+};
+
+BN_CTX *BN_CTX_new(void) {
+  BN_CTX *ret = OPENSSL_malloc(sizeof(BN_CTX));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  // Initialise the structure
+  ret->bignums = NULL;
+  BN_STACK_init(&ret->stack);
+  ret->used = 0;
+  ret->error = 0;
+  ret->defer_error = 0;
+  return ret;
+}
+
+void BN_CTX_free(BN_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  // All |BN_CTX_start| calls must be matched with |BN_CTX_end|, otherwise the
+  // function may use more memory than expected, potentially without bound if
+  // done in a loop. Assert that all |BIGNUM|s have been released.
+  assert(ctx->used == 0 || ctx->error);
+  sk_BIGNUM_pop_free(ctx->bignums, BN_free);
+  BN_STACK_cleanup(&ctx->stack);
+  OPENSSL_free(ctx);
+}
+
+void BN_CTX_start(BN_CTX *ctx) {
+  if (ctx->error) {
+    // Once an operation has failed, |ctx->stack| no longer matches the number
+    // of |BN_CTX_end| calls to come. Do nothing.
+    return;
+  }
+
+  if (!BN_STACK_push(&ctx->stack, ctx->used)) {
+    ctx->error = 1;
+    // |BN_CTX_start| cannot fail, so defer the error to |BN_CTX_get|.
+    ctx->defer_error = 1;
+  }
+}
+
+BIGNUM *BN_CTX_get(BN_CTX *ctx) {
+  // Once any operation has failed, they all do.
+  if (ctx->error) {
+    if (ctx->defer_error) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_TEMPORARY_VARIABLES);
+      ctx->defer_error = 0;
+    }
+    return NULL;
+  }
+
+  if (ctx->bignums == NULL) {
+    ctx->bignums = sk_BIGNUM_new_null();
+    if (ctx->bignums == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      ctx->error = 1;
+      return NULL;
+    }
+  }
+
+  if (ctx->used == sk_BIGNUM_num(ctx->bignums)) {
+    BIGNUM *bn = BN_new();
+    if (bn == NULL || !sk_BIGNUM_push(ctx->bignums, bn)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_TEMPORARY_VARIABLES);
+      BN_free(bn);
+      ctx->error = 1;
+      return NULL;
+    }
+  }
+
+  BIGNUM *ret = sk_BIGNUM_value(ctx->bignums, ctx->used);
+  BN_zero(ret);
+  // This is bounded by |sk_BIGNUM_num|, so it cannot overflow.
+  ctx->used++;
+  return ret;
+}
+
+void BN_CTX_end(BN_CTX *ctx) {
+  if (ctx->error) {
+    // Once an operation has failed, |ctx->stack| no longer matches the number
+    // of |BN_CTX_end| calls to come. Do nothing.
+    return;
+  }
+
+  ctx->used = BN_STACK_pop(&ctx->stack);
+}
+
+
+// BN_STACK
+
+static void BN_STACK_init(BN_STACK *st) {
+  st->indexes = NULL;
+  st->depth = st->size = 0;
+}
+
+static void BN_STACK_cleanup(BN_STACK *st) {
+  OPENSSL_free(st->indexes);
+}
+
+static int BN_STACK_push(BN_STACK *st, size_t idx) {
+  if (st->depth == st->size) {
+    // This function intentionally does not push to the error queue on error.
+    // Error-reporting is deferred to |BN_CTX_get|.
+    size_t new_size = st->size != 0 ? st->size * 3 / 2 : BN_CTX_START_FRAMES;
+    if (new_size <= st->size || new_size > ((size_t)-1) / sizeof(size_t)) {
+      return 0;
+    }
+    size_t *new_indexes =
+        OPENSSL_realloc(st->indexes, new_size * sizeof(size_t));
+    if (new_indexes == NULL) {
+      return 0;
+    }
+    st->indexes = new_indexes;
+    st->size = new_size;
+  }
+
+  st->indexes[st->depth] = idx;
+  st->depth++;
+  return 1;
+}
+
+static size_t BN_STACK_pop(BN_STACK *st) {
+  assert(st->depth > 0);
+  st->depth--;
+  return st->indexes[st->depth];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c.grpc_back
new file mode 100644
index 0000000..f8c7ebf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/ctx.c.grpc_back	
@@ -0,0 +1,236 @@
+/* Written by Ulf Moeller for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../../internal.h"
+
+
+// The stack frame info is resizing, set a first-time expansion size;
+#define BN_CTX_START_FRAMES 32
+
+
+// BN_STACK
+
+// A |BN_STACK| is a stack of |size_t| values.
+typedef struct {
+  // Array of indexes into |ctx->bignums|.
+  size_t *indexes;
+  // Number of stack frames, and the size of the allocated array
+  size_t depth, size;
+} BN_STACK;
+
+static void BN_STACK_init(BN_STACK *);
+static void BN_STACK_cleanup(BN_STACK *);
+static int BN_STACK_push(BN_STACK *, size_t idx);
+static size_t BN_STACK_pop(BN_STACK *);
+
+
+// BN_CTX
+
+DEFINE_STACK_OF(BIGNUM)
+
+// The opaque BN_CTX type
+struct bignum_ctx {
+  // bignums is the stack of |BIGNUM|s managed by this |BN_CTX|.
+  STACK_OF(BIGNUM) *bignums;
+  // stack is the stack of |BN_CTX_start| frames. It is the value of |used| at
+  // the time |BN_CTX_start| was called.
+  BN_STACK stack;
+  // used is the number of |BIGNUM|s from |bignums| that have been used.
+  size_t used;
+  // error is one if any operation on this |BN_CTX| failed. All subsequent
+  // operations will fail.
+  char error;
+  // defer_error is one if an operation on this |BN_CTX| has failed, but no
+  // error has been pushed to the queue yet. This is used to defer errors from
+  // |BN_CTX_start| to |BN_CTX_get|.
+  char defer_error;
+};
+
+BN_CTX *BN_CTX_new(void) {
+  BN_CTX *ret = OPENSSL_malloc(sizeof(BN_CTX));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  // Initialise the structure
+  ret->bignums = NULL;
+  BN_STACK_init(&ret->stack);
+  ret->used = 0;
+  ret->error = 0;
+  ret->defer_error = 0;
+  return ret;
+}
+
+void BN_CTX_free(BN_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  // All |BN_CTX_start| calls must be matched with |BN_CTX_end|, otherwise the
+  // function may use more memory than expected, potentially without bound if
+  // done in a loop. Assert that all |BIGNUM|s have been released.
+  assert(ctx->used == 0 || ctx->error);
+  sk_BIGNUM_pop_free(ctx->bignums, BN_free);
+  BN_STACK_cleanup(&ctx->stack);
+  OPENSSL_free(ctx);
+}
+
+void BN_CTX_start(BN_CTX *ctx) {
+  if (ctx->error) {
+    // Once an operation has failed, |ctx->stack| no longer matches the number
+    // of |BN_CTX_end| calls to come. Do nothing.
+    return;
+  }
+
+  if (!BN_STACK_push(&ctx->stack, ctx->used)) {
+    ctx->error = 1;
+    // |BN_CTX_start| cannot fail, so defer the error to |BN_CTX_get|.
+    ctx->defer_error = 1;
+  }
+}
+
+BIGNUM *BN_CTX_get(BN_CTX *ctx) {
+  // Once any operation has failed, they all do.
+  if (ctx->error) {
+    if (ctx->defer_error) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_TEMPORARY_VARIABLES);
+      ctx->defer_error = 0;
+    }
+    return NULL;
+  }
+
+  if (ctx->bignums == NULL) {
+    ctx->bignums = sk_BIGNUM_new_null();
+    if (ctx->bignums == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      ctx->error = 1;
+      return NULL;
+    }
+  }
+
+  if (ctx->used == sk_BIGNUM_num(ctx->bignums)) {
+    BIGNUM *bn = BN_new();
+    if (bn == NULL || !sk_BIGNUM_push(ctx->bignums, bn)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_TEMPORARY_VARIABLES);
+      BN_free(bn);
+      ctx->error = 1;
+      return NULL;
+    }
+  }
+
+  BIGNUM *ret = sk_BIGNUM_value(ctx->bignums, ctx->used);
+  BN_zero(ret);
+  // This is bounded by |sk_BIGNUM_num|, so it cannot overflow.
+  ctx->used++;
+  return ret;
+}
+
+void BN_CTX_end(BN_CTX *ctx) {
+  if (ctx->error) {
+    // Once an operation has failed, |ctx->stack| no longer matches the number
+    // of |BN_CTX_end| calls to come. Do nothing.
+    return;
+  }
+
+  ctx->used = BN_STACK_pop(&ctx->stack);
+}
+
+
+// BN_STACK
+
+static void BN_STACK_init(BN_STACK *st) {
+  st->indexes = NULL;
+  st->depth = st->size = 0;
+}
+
+static void BN_STACK_cleanup(BN_STACK *st) {
+  OPENSSL_free(st->indexes);
+}
+
+static int BN_STACK_push(BN_STACK *st, size_t idx) {
+  if (st->depth == st->size) {
+    // This function intentionally does not push to the error queue on error.
+    // Error-reporting is deferred to |BN_CTX_get|.
+    size_t new_size = st->size != 0 ? st->size * 3 / 2 : BN_CTX_START_FRAMES;
+    if (new_size <= st->size || new_size > ((size_t)-1) / sizeof(size_t)) {
+      return 0;
+    }
+    size_t *new_indexes =
+        OPENSSL_realloc(st->indexes, new_size * sizeof(size_t));
+    if (new_indexes == NULL) {
+      return 0;
+    }
+    st->indexes = new_indexes;
+    st->size = new_size;
+  }
+
+  st->indexes[st->depth] = idx;
+  st->depth++;
+  return 1;
+}
+
+static size_t BN_STACK_pop(BN_STACK *st) {
+  assert(st->depth > 0);
+  st->depth--;
+  return st->indexes[st->depth];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c
new file mode 100644
index 0000000..45ae65e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c	
@@ -0,0 +1,886 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+#if !defined(BN_CAN_DIVIDE_ULLONG) && !defined(BN_CAN_USE_INLINE_ASM)
+// bn_div_words divides a double-width |h|,|l| by |d| and returns the result,
+// which must fit in a |BN_ULONG|.
+static BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d) {
+  BN_ULONG dh, dl, q, ret = 0, th, tl, t;
+  int i, count = 2;
+
+  if (d == 0) {
+    return BN_MASK2;
+  }
+
+  i = BN_num_bits_word(d);
+  assert((i == BN_BITS2) || (h <= (BN_ULONG)1 << i));
+
+  i = BN_BITS2 - i;
+  if (h >= d) {
+    h -= d;
+  }
+
+  if (i) {
+    d <<= i;
+    h = (h << i) | (l >> (BN_BITS2 - i));
+    l <<= i;
+  }
+  dh = (d & BN_MASK2h) >> BN_BITS4;
+  dl = (d & BN_MASK2l);
+  for (;;) {
+    if ((h >> BN_BITS4) == dh) {
+      q = BN_MASK2l;
+    } else {
+      q = h / dh;
+    }
+
+    th = q * dh;
+    tl = dl * q;
+    for (;;) {
+      t = h - th;
+      if ((t & BN_MASK2h) ||
+          ((tl) <= ((t << BN_BITS4) | ((l & BN_MASK2h) >> BN_BITS4)))) {
+        break;
+      }
+      q--;
+      th -= dh;
+      tl -= dl;
+    }
+    t = (tl >> BN_BITS4);
+    tl = (tl << BN_BITS4) & BN_MASK2h;
+    th += t;
+
+    if (l < tl) {
+      th++;
+    }
+    l -= tl;
+    if (h < th) {
+      h += d;
+      q--;
+    }
+    h -= th;
+
+    if (--count == 0) {
+      break;
+    }
+
+    ret = q << BN_BITS4;
+    h = (h << BN_BITS4) | (l >> BN_BITS4);
+    l = (l & BN_MASK2l) << BN_BITS4;
+  }
+
+  ret |= q;
+  return ret;
+}
+#endif  // !defined(BN_CAN_DIVIDE_ULLONG) && !defined(BN_CAN_USE_INLINE_ASM)
+
+static inline void bn_div_rem_words(BN_ULONG *quotient_out, BN_ULONG *rem_out,
+                                    BN_ULONG n0, BN_ULONG n1, BN_ULONG d0) {
+  // GCC and Clang generate function calls to |__udivdi3| and |__umoddi3| when
+  // the |BN_ULLONG|-based C code is used.
+  //
+  // GCC bugs:
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14224
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43721
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54183
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58897
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65668
+  //
+  // Clang bugs:
+  //   * https://llvm.org/bugs/show_bug.cgi?id=6397
+  //   * https://llvm.org/bugs/show_bug.cgi?id=12418
+  //
+  // These issues aren't specific to x86 and x86_64, so it might be worthwhile
+  // to add more assembly language implementations.
+#if defined(BN_CAN_USE_INLINE_ASM) && defined(OPENSSL_X86)
+  __asm__ volatile("divl %4"
+                   : "=a"(*quotient_out), "=d"(*rem_out)
+                   : "a"(n1), "d"(n0), "rm"(d0)
+                   : "cc");
+#elif defined(BN_CAN_USE_INLINE_ASM) && defined(OPENSSL_X86_64)
+  __asm__ volatile("divq %4"
+                   : "=a"(*quotient_out), "=d"(*rem_out)
+                   : "a"(n1), "d"(n0), "rm"(d0)
+                   : "cc");
+#else
+#if defined(BN_CAN_DIVIDE_ULLONG)
+  BN_ULLONG n = (((BN_ULLONG)n0) << BN_BITS2) | n1;
+  *quotient_out = (BN_ULONG)(n / d0);
+#else
+  *quotient_out = bn_div_words(n0, n1, d0);
+#endif
+  *rem_out = n1 - (*quotient_out * d0);
+#endif
+}
+
+// BN_div computes "quotient := numerator / divisor", rounding towards zero,
+// and sets up |rem| such that "quotient * divisor + rem = numerator" holds.
+//
+// Thus:
+//
+//     quotient->neg == numerator->neg ^ divisor->neg
+//        (unless the result is zero)
+//     rem->neg == numerator->neg
+//        (unless the remainder is zero)
+//
+// If |quotient| or |rem| is NULL, the respective value is not returned.
+//
+// This was specifically designed to contain fewer branches that may leak
+// sensitive information; see "New Branch Prediction Vulnerabilities in OpenSSL
+// and Necessary Software Countermeasures" by Onur Acıçmez, Shay Gueron, and
+// Jean-Pierre Seifert.
+int BN_div(BIGNUM *quotient, BIGNUM *rem, const BIGNUM *numerator,
+           const BIGNUM *divisor, BN_CTX *ctx) {
+  int norm_shift, loop;
+  BIGNUM wnum;
+  BN_ULONG *resp, *wnump;
+  BN_ULONG d0, d1;
+  int num_n, div_n;
+
+  // This function relies on the historical minimal-width |BIGNUM| invariant.
+  // It is already not constant-time (constant-time reductions should use
+  // Montgomery logic), so we shrink all inputs and intermediate values to
+  // retain the previous behavior.
+
+  // Invalid zero-padding would have particularly bad consequences.
+  int numerator_width = bn_minimal_width(numerator);
+  int divisor_width = bn_minimal_width(divisor);
+  if ((numerator_width > 0 && numerator->d[numerator_width - 1] == 0) ||
+      (divisor_width > 0 && divisor->d[divisor_width - 1] == 0)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (BN_is_zero(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  BIGNUM *snum = BN_CTX_get(ctx);
+  BIGNUM *sdiv = BN_CTX_get(ctx);
+  BIGNUM *res = NULL;
+  if (quotient == NULL) {
+    res = BN_CTX_get(ctx);
+  } else {
+    res = quotient;
+  }
+  if (sdiv == NULL || res == NULL) {
+    goto err;
+  }
+
+  // First we normalise the numbers
+  norm_shift = BN_BITS2 - (BN_num_bits(divisor) % BN_BITS2);
+  if (!BN_lshift(sdiv, divisor, norm_shift)) {
+    goto err;
+  }
+  bn_set_minimal_width(sdiv);
+  sdiv->neg = 0;
+  norm_shift += BN_BITS2;
+  if (!BN_lshift(snum, numerator, norm_shift)) {
+    goto err;
+  }
+  bn_set_minimal_width(snum);
+  snum->neg = 0;
+
+  // Since we don't want to have special-case logic for the case where snum is
+  // larger than sdiv, we pad snum with enough zeroes without changing its
+  // value.
+  if (snum->width <= sdiv->width + 1) {
+    if (!bn_wexpand(snum, sdiv->width + 2)) {
+      goto err;
+    }
+    for (int i = snum->width; i < sdiv->width + 2; i++) {
+      snum->d[i] = 0;
+    }
+    snum->width = sdiv->width + 2;
+  } else {
+    if (!bn_wexpand(snum, snum->width + 1)) {
+      goto err;
+    }
+    snum->d[snum->width] = 0;
+    snum->width++;
+  }
+
+  div_n = sdiv->width;
+  num_n = snum->width;
+  loop = num_n - div_n;
+  // Lets setup a 'window' into snum
+  // This is the part that corresponds to the current
+  // 'area' being divided
+  wnum.neg = 0;
+  wnum.d = &(snum->d[loop]);
+  wnum.width = div_n;
+  // only needed when BN_ucmp messes up the values between width and max
+  wnum.dmax = snum->dmax - loop;  // so we don't step out of bounds
+
+  // Get the top 2 words of sdiv
+  // div_n=sdiv->width;
+  d0 = sdiv->d[div_n - 1];
+  d1 = (div_n == 1) ? 0 : sdiv->d[div_n - 2];
+
+  // pointer to the 'top' of snum
+  wnump = &(snum->d[num_n - 1]);
+
+  // Setup to 'res'
+  res->neg = (numerator->neg ^ divisor->neg);
+  if (!bn_wexpand(res, loop + 1)) {
+    goto err;
+  }
+  res->width = loop - 1;
+  resp = &(res->d[loop - 1]);
+
+  // space for temp
+  if (!bn_wexpand(tmp, div_n + 1)) {
+    goto err;
+  }
+
+  // if res->width == 0 then clear the neg value otherwise decrease
+  // the resp pointer
+  if (res->width == 0) {
+    res->neg = 0;
+  } else {
+    resp--;
+  }
+
+  for (int i = 0; i < loop - 1; i++, wnump--, resp--) {
+    BN_ULONG q, l0;
+    // the first part of the loop uses the top two words of snum and sdiv to
+    // calculate a BN_ULONG q such that | wnum - sdiv * q | < sdiv
+    BN_ULONG n0, n1, rm = 0;
+
+    n0 = wnump[0];
+    n1 = wnump[-1];
+    if (n0 == d0) {
+      q = BN_MASK2;
+    } else {
+      // n0 < d0
+      bn_div_rem_words(&q, &rm, n0, n1, d0);
+
+#ifdef BN_ULLONG
+      BN_ULLONG t2 = (BN_ULLONG)d1 * q;
+      for (;;) {
+        if (t2 <= ((((BN_ULLONG)rm) << BN_BITS2) | wnump[-2])) {
+          break;
+        }
+        q--;
+        rm += d0;
+        if (rm < d0) {
+          break;  // don't let rm overflow
+        }
+        t2 -= d1;
+      }
+#else  // !BN_ULLONG
+      BN_ULONG t2l, t2h;
+      BN_UMULT_LOHI(t2l, t2h, d1, q);
+      for (;;) {
+        if (t2h < rm ||
+            (t2h == rm && t2l <= wnump[-2])) {
+          break;
+        }
+        q--;
+        rm += d0;
+        if (rm < d0) {
+          break;  // don't let rm overflow
+        }
+        if (t2l < d1) {
+          t2h--;
+        }
+        t2l -= d1;
+      }
+#endif  // !BN_ULLONG
+    }
+
+    l0 = bn_mul_words(tmp->d, sdiv->d, div_n, q);
+    tmp->d[div_n] = l0;
+    wnum.d--;
+    // ingore top values of the bignums just sub the two
+    // BN_ULONG arrays with bn_sub_words
+    if (bn_sub_words(wnum.d, wnum.d, tmp->d, div_n + 1)) {
+      // Note: As we have considered only the leading
+      // two BN_ULONGs in the calculation of q, sdiv * q
+      // might be greater than wnum (but then (q-1) * sdiv
+      // is less or equal than wnum)
+      q--;
+      if (bn_add_words(wnum.d, wnum.d, sdiv->d, div_n)) {
+        // we can't have an overflow here (assuming
+        // that q != 0, but if q == 0 then tmp is
+        // zero anyway)
+        (*wnump)++;
+      }
+    }
+    // store part of the result
+    *resp = q;
+  }
+
+  bn_set_minimal_width(snum);
+
+  if (rem != NULL) {
+    // Keep a copy of the neg flag in numerator because if |rem| == |numerator|
+    // |BN_rshift| will overwrite it.
+    int neg = numerator->neg;
+    if (!BN_rshift(rem, snum, norm_shift)) {
+      goto err;
+    }
+    if (!BN_is_zero(rem)) {
+      rem->neg = neg;
+    }
+  }
+
+  bn_set_minimal_width(res);
+  BN_CTX_end(ctx);
+  return 1;
+
+err:
+  BN_CTX_end(ctx);
+  return 0;
+}
+
+int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx) {
+  if (!(BN_mod(r, m, d, ctx))) {
+    return 0;
+  }
+  if (!r->neg) {
+    return 1;
+  }
+
+  // now -|d| < r < 0, so we have to set r := r + |d|.
+  return (d->neg ? BN_sub : BN_add)(r, r, d);
+}
+
+BN_ULONG bn_reduce_once(BN_ULONG *r, const BN_ULONG *a, BN_ULONG carry,
+                        const BN_ULONG *m, size_t num) {
+  assert(r != a);
+  // |r| = |a| - |m|. |bn_sub_words| performs the bulk of the subtraction, and
+  // then we apply the borrow to |carry|.
+  carry -= bn_sub_words(r, a, m, num);
+  // We know 0 <= |a| < 2*|m|, so -|m| <= |r| < |m|.
+  //
+  // If 0 <= |r| < |m|, |r| fits in |num| words and |carry| is zero. We then
+  // wish to select |r| as the answer. Otherwise -m <= r < 0 and we wish to
+  // return |r| + |m|, or |a|. |carry| must then be -1 or all ones. In both
+  // cases, |carry| is a suitable input to |bn_select_words|.
+  //
+  // Although |carry| may be one if it was one on input and |bn_sub_words|
+  // returns zero, this would give |r| > |m|, violating our input assumptions.
+  assert(carry == 0 || carry == (BN_ULONG)-1);
+  bn_select_words(r, carry, a /* r < 0 */, r /* r >= 0 */, num);
+  return carry;
+}
+
+BN_ULONG bn_reduce_once_in_place(BN_ULONG *r, BN_ULONG carry, const BN_ULONG *m,
+                                 BN_ULONG *tmp, size_t num) {
+  // See |bn_reduce_once| for why this logic works.
+  carry -= bn_sub_words(tmp, r, m, num);
+  assert(carry == 0 || carry == (BN_ULONG)-1);
+  bn_select_words(r, carry, r /* tmp < 0 */, tmp /* tmp >= 0 */, num);
+  return carry;
+}
+
+void bn_mod_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num) {
+  // r = a - b
+  BN_ULONG borrow = bn_sub_words(r, a, b, num);
+  // tmp = a - b + m
+  bn_add_words(tmp, r, m, num);
+  bn_select_words(r, 0 - borrow, tmp /* r < 0 */, r /* r >= 0 */, num);
+}
+
+void bn_mod_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num) {
+  BN_ULONG carry = bn_add_words(r, a, b, num);
+  bn_reduce_once_in_place(r, carry, m, tmp, num);
+}
+
+int bn_div_consttime(BIGNUM *quotient, BIGNUM *remainder,
+                     const BIGNUM *numerator, const BIGNUM *divisor,
+                     BN_CTX *ctx) {
+  if (BN_is_negative(numerator) || BN_is_negative(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (BN_is_zero(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+
+  // This function implements long division in binary. It is not very efficient,
+  // but it is simple, easy to make constant-time, and performant enough for RSA
+  // key generation.
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *q = quotient, *r = remainder;
+  if (quotient == NULL || quotient == numerator || quotient == divisor) {
+    q = BN_CTX_get(ctx);
+  }
+  if (remainder == NULL || remainder == numerator || remainder == divisor) {
+    r = BN_CTX_get(ctx);
+  }
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (q == NULL || r == NULL || tmp == NULL ||
+      !bn_wexpand(q, numerator->width) ||
+      !bn_wexpand(r, divisor->width) ||
+      !bn_wexpand(tmp, divisor->width)) {
+    goto err;
+  }
+
+  OPENSSL_memset(q->d, 0, numerator->width * sizeof(BN_ULONG));
+  q->width = numerator->width;
+  q->neg = 0;
+
+  OPENSSL_memset(r->d, 0, divisor->width * sizeof(BN_ULONG));
+  r->width = divisor->width;
+  r->neg = 0;
+
+  // Incorporate |numerator| into |r|, one bit at a time, reducing after each
+  // step. At the start of each loop iteration, |r| < |divisor|
+  for (int i = numerator->width - 1; i >= 0; i--) {
+    for (int bit = BN_BITS2 - 1; bit >= 0; bit--) {
+      // Incorporate the next bit of the numerator, by computing
+      // r = 2*r or 2*r + 1. Note the result fits in one more word. We store the
+      // extra word in |carry|.
+      BN_ULONG carry = bn_add_words(r->d, r->d, r->d, divisor->width);
+      r->d[0] |= (numerator->d[i] >> bit) & 1;
+      // |r| was previously fully-reduced, so we know:
+      //      2*0 <= r <= 2*(divisor-1) + 1
+      //        0 <= r <= 2*divisor - 1 < 2*divisor.
+      // Thus |r| satisfies the preconditions for |bn_reduce_once_in_place|.
+      BN_ULONG subtracted = bn_reduce_once_in_place(r->d, carry, divisor->d,
+                                                    tmp->d, divisor->width);
+      // The corresponding bit of the quotient is set iff we needed to subtract.
+      q->d[i] |= (~subtracted & 1) << bit;
+    }
+  }
+
+  if ((quotient != NULL && !BN_copy(quotient, q)) ||
+      (remainder != NULL && !BN_copy(remainder, r))) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static BIGNUM *bn_scratch_space_from_ctx(size_t width, BN_CTX *ctx) {
+  BIGNUM *ret = BN_CTX_get(ctx);
+  if (ret == NULL ||
+      !bn_wexpand(ret, width)) {
+    return NULL;
+  }
+  ret->neg = 0;
+  ret->width = width;
+  return ret;
+}
+
+// bn_resized_from_ctx returns |bn| with width at least |width| or NULL on
+// error. This is so it may be used with low-level "words" functions. If
+// necessary, it allocates a new |BIGNUM| with a lifetime of the current scope
+// in |ctx|, so the caller does not need to explicitly free it. |bn| must fit in
+// |width| words.
+static const BIGNUM *bn_resized_from_ctx(const BIGNUM *bn, size_t width,
+                                         BN_CTX *ctx) {
+  if ((size_t)bn->width >= width) {
+    // Any excess words must be zero.
+    assert(bn_fits_in_words(bn, width));
+    return bn;
+  }
+  BIGNUM *ret = bn_scratch_space_from_ctx(width, ctx);
+  if (ret == NULL ||
+      !BN_copy(ret, bn) ||
+      !bn_resize_words(ret, width)) {
+    return NULL;
+  }
+  return ret;
+}
+
+int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (!BN_add(r, a, b)) {
+    return 0;
+  }
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_add_consttime(r, a, b, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int bn_mod_add_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  a = bn_resized_from_ctx(a, m->width, ctx);
+  b = bn_resized_from_ctx(b, m->width, ctx);
+  BIGNUM *tmp = bn_scratch_space_from_ctx(m->width, ctx);
+  int ok = a != NULL && b != NULL && tmp != NULL &&
+           bn_wexpand(r, m->width);
+  if (ok) {
+    bn_mod_add_words(r->d, a->d, b->d, m->d, tmp->d, m->width);
+    r->width = m->width;
+    r->neg = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (!BN_sub(r, a, b)) {
+    return 0;
+  }
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int bn_mod_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  a = bn_resized_from_ctx(a, m->width, ctx);
+  b = bn_resized_from_ctx(b, m->width, ctx);
+  BIGNUM *tmp = bn_scratch_space_from_ctx(m->width, ctx);
+  int ok = a != NULL && b != NULL && tmp != NULL &&
+           bn_wexpand(r, m->width);
+  if (ok) {
+    bn_mod_sub_words(r->d, a->d, b->d, m->d, tmp->d, m->width);
+    r->width = m->width;
+    r->neg = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_sub_consttime(r, a, b, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  BIGNUM *t;
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL) {
+    goto err;
+  }
+
+  if (a == b) {
+    if (!BN_sqr(t, a, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_mul(t, a, b, ctx)) {
+      goto err;
+    }
+  }
+
+  if (!BN_nnmod(r, t, m, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx) {
+  if (!BN_sqr(r, a, ctx)) {
+    return 0;
+  }
+
+  // r->neg == 0,  thus we don't need BN_nnmod
+  return BN_mod(r, r, m, ctx);
+}
+
+int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                  BN_CTX *ctx) {
+  BIGNUM *abs_m = NULL;
+  int ret;
+
+  if (!BN_nnmod(r, a, m, ctx)) {
+    return 0;
+  }
+
+  if (m->neg) {
+    abs_m = BN_dup(m);
+    if (abs_m == NULL) {
+      return 0;
+    }
+    abs_m->neg = 0;
+  }
+
+  ret = bn_mod_lshift_consttime(r, r, n, (abs_m ? abs_m : m), ctx);
+
+  BN_free(abs_m);
+  return ret;
+}
+
+int bn_mod_lshift_consttime(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                            BN_CTX *ctx) {
+  if (!BN_copy(r, a)) {
+    return 0;
+  }
+  for (int i = 0; i < n; i++) {
+    if (!bn_mod_lshift1_consttime(r, r, m, ctx)) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_lshift_consttime(r, a, n, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx) {
+  if (!BN_lshift1(r, a)) {
+    return 0;
+  }
+
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int bn_mod_lshift1_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                             BN_CTX *ctx) {
+  return bn_mod_add_consttime(r, a, a, m, ctx);
+}
+
+int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_lshift1_consttime(r, a, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w) {
+  BN_ULONG ret = 0;
+  int i, j;
+
+  if (!w) {
+    // actually this an error (division by zero)
+    return (BN_ULONG) - 1;
+  }
+
+  if (a->width == 0) {
+    return 0;
+  }
+
+  // normalize input for |bn_div_rem_words|.
+  j = BN_BITS2 - BN_num_bits_word(w);
+  w <<= j;
+  if (!BN_lshift(a, a, j)) {
+    return (BN_ULONG) - 1;
+  }
+
+  for (i = a->width - 1; i >= 0; i--) {
+    BN_ULONG l = a->d[i];
+    BN_ULONG d;
+    BN_ULONG unused_rem;
+    bn_div_rem_words(&d, &unused_rem, ret, l, w);
+    ret = l - (d * w);
+    a->d[i] = d;
+  }
+
+  bn_set_minimal_width(a);
+  ret >>= j;
+  return ret;
+}
+
+BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w) {
+#ifndef BN_CAN_DIVIDE_ULLONG
+  BN_ULONG ret = 0;
+#else
+  BN_ULLONG ret = 0;
+#endif
+  int i;
+
+  if (w == 0) {
+    return (BN_ULONG) -1;
+  }
+
+#ifndef BN_CAN_DIVIDE_ULLONG
+  // If |w| is too long and we don't have |BN_ULLONG| division then we need to
+  // fall back to using |BN_div_word|.
+  if (w > ((BN_ULONG)1 << BN_BITS4)) {
+    BIGNUM *tmp = BN_dup(a);
+    if (tmp == NULL) {
+      return (BN_ULONG)-1;
+    }
+    ret = BN_div_word(tmp, w);
+    BN_free(tmp);
+    return ret;
+  }
+#endif
+
+  for (i = a->width - 1; i >= 0; i--) {
+#ifndef BN_CAN_DIVIDE_ULLONG
+    ret = ((ret << BN_BITS4) | ((a->d[i] >> BN_BITS4) & BN_MASK2l)) % w;
+    ret = ((ret << BN_BITS4) | (a->d[i] & BN_MASK2l)) % w;
+#else
+    ret = (BN_ULLONG)(((ret << (BN_ULLONG)BN_BITS2) | a->d[i]) % (BN_ULLONG)w);
+#endif
+  }
+  return (BN_ULONG)ret;
+}
+
+int BN_mod_pow2(BIGNUM *r, const BIGNUM *a, size_t e) {
+  if (e == 0 || a->width == 0) {
+    BN_zero(r);
+    return 1;
+  }
+
+  size_t num_words = 1 + ((e - 1) / BN_BITS2);
+
+  // If |a| definitely has less than |e| bits, just BN_copy.
+  if ((size_t) a->width < num_words) {
+    return BN_copy(r, a) != NULL;
+  }
+
+  // Otherwise, first make sure we have enough space in |r|.
+  // Note that this will fail if num_words > INT_MAX.
+  if (!bn_wexpand(r, num_words)) {
+    return 0;
+  }
+
+  // Copy the content of |a| into |r|.
+  OPENSSL_memcpy(r->d, a->d, num_words * sizeof(BN_ULONG));
+
+  // If |e| isn't word-aligned, we have to mask off some of our bits.
+  size_t top_word_exponent = e % (sizeof(BN_ULONG) * 8);
+  if (top_word_exponent != 0) {
+    r->d[num_words - 1] &= (((BN_ULONG) 1) << top_word_exponent) - 1;
+  }
+
+  // Fill in the remaining fields of |r|.
+  r->neg = a->neg;
+  r->width = (int) num_words;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_nnmod_pow2(BIGNUM *r, const BIGNUM *a, size_t e) {
+  if (!BN_mod_pow2(r, a, e)) {
+    return 0;
+  }
+
+  // If the returned value was non-negative, we're done.
+  if (BN_is_zero(r) || !r->neg) {
+    return 1;
+  }
+
+  size_t num_words = 1 + (e - 1) / BN_BITS2;
+
+  // Expand |r| to the size of our modulus.
+  if (!bn_wexpand(r, num_words)) {
+    return 0;
+  }
+
+  // Clear the upper words of |r|.
+  OPENSSL_memset(&r->d[r->width], 0, (num_words - r->width) * BN_BYTES);
+
+  // Set parameters of |r|.
+  r->neg = 0;
+  r->width = (int) num_words;
+
+  // Now, invert every word. The idea here is that we want to compute 2^e-|x|,
+  // which is actually equivalent to the twos-complement representation of |x|
+  // in |e| bits, which is -x = ~x + 1.
+  for (int i = 0; i < r->width; i++) {
+    r->d[i] = ~r->d[i];
+  }
+
+  // If our exponent doesn't span the top word, we have to mask the rest.
+  size_t top_word_exponent = e % BN_BITS2;
+  if (top_word_exponent != 0) {
+    r->d[r->width - 1] &= (((BN_ULONG) 1) << top_word_exponent) - 1;
+  }
+
+  // Keep the minimal-width invariant for |BIGNUM|.
+  bn_set_minimal_width(r);
+
+  // Finally, add one, for the reason described above.
+  return BN_add(r, r, BN_value_one());
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c.grpc_back
new file mode 100644
index 0000000..27b591c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div.c.grpc_back	
@@ -0,0 +1,886 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+#if !defined(BN_CAN_DIVIDE_ULLONG) && !defined(BN_CAN_USE_INLINE_ASM)
+// bn_div_words divides a double-width |h|,|l| by |d| and returns the result,
+// which must fit in a |BN_ULONG|.
+static BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d) {
+  BN_ULONG dh, dl, q, ret = 0, th, tl, t;
+  int i, count = 2;
+
+  if (d == 0) {
+    return BN_MASK2;
+  }
+
+  i = BN_num_bits_word(d);
+  assert((i == BN_BITS2) || (h <= (BN_ULONG)1 << i));
+
+  i = BN_BITS2 - i;
+  if (h >= d) {
+    h -= d;
+  }
+
+  if (i) {
+    d <<= i;
+    h = (h << i) | (l >> (BN_BITS2 - i));
+    l <<= i;
+  }
+  dh = (d & BN_MASK2h) >> BN_BITS4;
+  dl = (d & BN_MASK2l);
+  for (;;) {
+    if ((h >> BN_BITS4) == dh) {
+      q = BN_MASK2l;
+    } else {
+      q = h / dh;
+    }
+
+    th = q * dh;
+    tl = dl * q;
+    for (;;) {
+      t = h - th;
+      if ((t & BN_MASK2h) ||
+          ((tl) <= ((t << BN_BITS4) | ((l & BN_MASK2h) >> BN_BITS4)))) {
+        break;
+      }
+      q--;
+      th -= dh;
+      tl -= dl;
+    }
+    t = (tl >> BN_BITS4);
+    tl = (tl << BN_BITS4) & BN_MASK2h;
+    th += t;
+
+    if (l < tl) {
+      th++;
+    }
+    l -= tl;
+    if (h < th) {
+      h += d;
+      q--;
+    }
+    h -= th;
+
+    if (--count == 0) {
+      break;
+    }
+
+    ret = q << BN_BITS4;
+    h = (h << BN_BITS4) | (l >> BN_BITS4);
+    l = (l & BN_MASK2l) << BN_BITS4;
+  }
+
+  ret |= q;
+  return ret;
+}
+#endif  // !defined(BN_CAN_DIVIDE_ULLONG) && !defined(BN_CAN_USE_INLINE_ASM)
+
+static inline void bn_div_rem_words(BN_ULONG *quotient_out, BN_ULONG *rem_out,
+                                    BN_ULONG n0, BN_ULONG n1, BN_ULONG d0) {
+  // GCC and Clang generate function calls to |__udivdi3| and |__umoddi3| when
+  // the |BN_ULLONG|-based C code is used.
+  //
+  // GCC bugs:
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14224
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43721
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54183
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58897
+  //   * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65668
+  //
+  // Clang bugs:
+  //   * https://llvm.org/bugs/show_bug.cgi?id=6397
+  //   * https://llvm.org/bugs/show_bug.cgi?id=12418
+  //
+  // These issues aren't specific to x86 and x86_64, so it might be worthwhile
+  // to add more assembly language implementations.
+#if defined(BN_CAN_USE_INLINE_ASM) && defined(OPENSSL_X86)
+  __asm__ volatile("divl %4"
+                   : "=a"(*quotient_out), "=d"(*rem_out)
+                   : "a"(n1), "d"(n0), "rm"(d0)
+                   : "cc");
+#elif defined(BN_CAN_USE_INLINE_ASM) && defined(OPENSSL_X86_64)
+  __asm__ volatile("divq %4"
+                   : "=a"(*quotient_out), "=d"(*rem_out)
+                   : "a"(n1), "d"(n0), "rm"(d0)
+                   : "cc");
+#else
+#if defined(BN_CAN_DIVIDE_ULLONG)
+  BN_ULLONG n = (((BN_ULLONG)n0) << BN_BITS2) | n1;
+  *quotient_out = (BN_ULONG)(n / d0);
+#else
+  *quotient_out = bn_div_words(n0, n1, d0);
+#endif
+  *rem_out = n1 - (*quotient_out * d0);
+#endif
+}
+
+// BN_div computes "quotient := numerator / divisor", rounding towards zero,
+// and sets up |rem| such that "quotient * divisor + rem = numerator" holds.
+//
+// Thus:
+//
+//     quotient->neg == numerator->neg ^ divisor->neg
+//        (unless the result is zero)
+//     rem->neg == numerator->neg
+//        (unless the remainder is zero)
+//
+// If |quotient| or |rem| is NULL, the respective value is not returned.
+//
+// This was specifically designed to contain fewer branches that may leak
+// sensitive information; see "New Branch Prediction Vulnerabilities in OpenSSL
+// and Necessary Software Countermeasures" by Onur Acıçmez, Shay Gueron, and
+// Jean-Pierre Seifert.
+int BN_div(BIGNUM *quotient, BIGNUM *rem, const BIGNUM *numerator,
+           const BIGNUM *divisor, BN_CTX *ctx) {
+  int norm_shift, loop;
+  BIGNUM wnum;
+  BN_ULONG *resp, *wnump;
+  BN_ULONG d0, d1;
+  int num_n, div_n;
+
+  // This function relies on the historical minimal-width |BIGNUM| invariant.
+  // It is already not constant-time (constant-time reductions should use
+  // Montgomery logic), so we shrink all inputs and intermediate values to
+  // retain the previous behavior.
+
+  // Invalid zero-padding would have particularly bad consequences.
+  int numerator_width = bn_minimal_width(numerator);
+  int divisor_width = bn_minimal_width(divisor);
+  if ((numerator_width > 0 && numerator->d[numerator_width - 1] == 0) ||
+      (divisor_width > 0 && divisor->d[divisor_width - 1] == 0)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (BN_is_zero(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  BIGNUM *snum = BN_CTX_get(ctx);
+  BIGNUM *sdiv = BN_CTX_get(ctx);
+  BIGNUM *res = NULL;
+  if (quotient == NULL) {
+    res = BN_CTX_get(ctx);
+  } else {
+    res = quotient;
+  }
+  if (sdiv == NULL || res == NULL) {
+    goto err;
+  }
+
+  // First we normalise the numbers
+  norm_shift = BN_BITS2 - (BN_num_bits(divisor) % BN_BITS2);
+  if (!BN_lshift(sdiv, divisor, norm_shift)) {
+    goto err;
+  }
+  bn_set_minimal_width(sdiv);
+  sdiv->neg = 0;
+  norm_shift += BN_BITS2;
+  if (!BN_lshift(snum, numerator, norm_shift)) {
+    goto err;
+  }
+  bn_set_minimal_width(snum);
+  snum->neg = 0;
+
+  // Since we don't want to have special-case logic for the case where snum is
+  // larger than sdiv, we pad snum with enough zeroes without changing its
+  // value.
+  if (snum->width <= sdiv->width + 1) {
+    if (!bn_wexpand(snum, sdiv->width + 2)) {
+      goto err;
+    }
+    for (int i = snum->width; i < sdiv->width + 2; i++) {
+      snum->d[i] = 0;
+    }
+    snum->width = sdiv->width + 2;
+  } else {
+    if (!bn_wexpand(snum, snum->width + 1)) {
+      goto err;
+    }
+    snum->d[snum->width] = 0;
+    snum->width++;
+  }
+
+  div_n = sdiv->width;
+  num_n = snum->width;
+  loop = num_n - div_n;
+  // Lets setup a 'window' into snum
+  // This is the part that corresponds to the current
+  // 'area' being divided
+  wnum.neg = 0;
+  wnum.d = &(snum->d[loop]);
+  wnum.width = div_n;
+  // only needed when BN_ucmp messes up the values between width and max
+  wnum.dmax = snum->dmax - loop;  // so we don't step out of bounds
+
+  // Get the top 2 words of sdiv
+  // div_n=sdiv->width;
+  d0 = sdiv->d[div_n - 1];
+  d1 = (div_n == 1) ? 0 : sdiv->d[div_n - 2];
+
+  // pointer to the 'top' of snum
+  wnump = &(snum->d[num_n - 1]);
+
+  // Setup to 'res'
+  res->neg = (numerator->neg ^ divisor->neg);
+  if (!bn_wexpand(res, loop + 1)) {
+    goto err;
+  }
+  res->width = loop - 1;
+  resp = &(res->d[loop - 1]);
+
+  // space for temp
+  if (!bn_wexpand(tmp, div_n + 1)) {
+    goto err;
+  }
+
+  // if res->width == 0 then clear the neg value otherwise decrease
+  // the resp pointer
+  if (res->width == 0) {
+    res->neg = 0;
+  } else {
+    resp--;
+  }
+
+  for (int i = 0; i < loop - 1; i++, wnump--, resp--) {
+    BN_ULONG q, l0;
+    // the first part of the loop uses the top two words of snum and sdiv to
+    // calculate a BN_ULONG q such that | wnum - sdiv * q | < sdiv
+    BN_ULONG n0, n1, rm = 0;
+
+    n0 = wnump[0];
+    n1 = wnump[-1];
+    if (n0 == d0) {
+      q = BN_MASK2;
+    } else {
+      // n0 < d0
+      bn_div_rem_words(&q, &rm, n0, n1, d0);
+
+#ifdef BN_ULLONG
+      BN_ULLONG t2 = (BN_ULLONG)d1 * q;
+      for (;;) {
+        if (t2 <= ((((BN_ULLONG)rm) << BN_BITS2) | wnump[-2])) {
+          break;
+        }
+        q--;
+        rm += d0;
+        if (rm < d0) {
+          break;  // don't let rm overflow
+        }
+        t2 -= d1;
+      }
+#else  // !BN_ULLONG
+      BN_ULONG t2l, t2h;
+      BN_UMULT_LOHI(t2l, t2h, d1, q);
+      for (;;) {
+        if (t2h < rm ||
+            (t2h == rm && t2l <= wnump[-2])) {
+          break;
+        }
+        q--;
+        rm += d0;
+        if (rm < d0) {
+          break;  // don't let rm overflow
+        }
+        if (t2l < d1) {
+          t2h--;
+        }
+        t2l -= d1;
+      }
+#endif  // !BN_ULLONG
+    }
+
+    l0 = bn_mul_words(tmp->d, sdiv->d, div_n, q);
+    tmp->d[div_n] = l0;
+    wnum.d--;
+    // ingore top values of the bignums just sub the two
+    // BN_ULONG arrays with bn_sub_words
+    if (bn_sub_words(wnum.d, wnum.d, tmp->d, div_n + 1)) {
+      // Note: As we have considered only the leading
+      // two BN_ULONGs in the calculation of q, sdiv * q
+      // might be greater than wnum (but then (q-1) * sdiv
+      // is less or equal than wnum)
+      q--;
+      if (bn_add_words(wnum.d, wnum.d, sdiv->d, div_n)) {
+        // we can't have an overflow here (assuming
+        // that q != 0, but if q == 0 then tmp is
+        // zero anyway)
+        (*wnump)++;
+      }
+    }
+    // store part of the result
+    *resp = q;
+  }
+
+  bn_set_minimal_width(snum);
+
+  if (rem != NULL) {
+    // Keep a copy of the neg flag in numerator because if |rem| == |numerator|
+    // |BN_rshift| will overwrite it.
+    int neg = numerator->neg;
+    if (!BN_rshift(rem, snum, norm_shift)) {
+      goto err;
+    }
+    if (!BN_is_zero(rem)) {
+      rem->neg = neg;
+    }
+  }
+
+  bn_set_minimal_width(res);
+  BN_CTX_end(ctx);
+  return 1;
+
+err:
+  BN_CTX_end(ctx);
+  return 0;
+}
+
+int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx) {
+  if (!(BN_mod(r, m, d, ctx))) {
+    return 0;
+  }
+  if (!r->neg) {
+    return 1;
+  }
+
+  // now -|d| < r < 0, so we have to set r := r + |d|.
+  return (d->neg ? BN_sub : BN_add)(r, r, d);
+}
+
+BN_ULONG bn_reduce_once(BN_ULONG *r, const BN_ULONG *a, BN_ULONG carry,
+                        const BN_ULONG *m, size_t num) {
+  assert(r != a);
+  // |r| = |a| - |m|. |bn_sub_words| performs the bulk of the subtraction, and
+  // then we apply the borrow to |carry|.
+  carry -= bn_sub_words(r, a, m, num);
+  // We know 0 <= |a| < 2*|m|, so -|m| <= |r| < |m|.
+  //
+  // If 0 <= |r| < |m|, |r| fits in |num| words and |carry| is zero. We then
+  // wish to select |r| as the answer. Otherwise -m <= r < 0 and we wish to
+  // return |r| + |m|, or |a|. |carry| must then be -1 or all ones. In both
+  // cases, |carry| is a suitable input to |bn_select_words|.
+  //
+  // Although |carry| may be one if it was one on input and |bn_sub_words|
+  // returns zero, this would give |r| > |m|, violating our input assumptions.
+  assert(carry == 0 || carry == (BN_ULONG)-1);
+  bn_select_words(r, carry, a /* r < 0 */, r /* r >= 0 */, num);
+  return carry;
+}
+
+BN_ULONG bn_reduce_once_in_place(BN_ULONG *r, BN_ULONG carry, const BN_ULONG *m,
+                                 BN_ULONG *tmp, size_t num) {
+  // See |bn_reduce_once| for why this logic works.
+  carry -= bn_sub_words(tmp, r, m, num);
+  assert(carry == 0 || carry == (BN_ULONG)-1);
+  bn_select_words(r, carry, r /* tmp < 0 */, tmp /* tmp >= 0 */, num);
+  return carry;
+}
+
+void bn_mod_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num) {
+  // r = a - b
+  BN_ULONG borrow = bn_sub_words(r, a, b, num);
+  // tmp = a - b + m
+  bn_add_words(tmp, r, m, num);
+  bn_select_words(r, 0 - borrow, tmp /* r < 0 */, r /* r >= 0 */, num);
+}
+
+void bn_mod_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num) {
+  BN_ULONG carry = bn_add_words(r, a, b, num);
+  bn_reduce_once_in_place(r, carry, m, tmp, num);
+}
+
+int bn_div_consttime(BIGNUM *quotient, BIGNUM *remainder,
+                     const BIGNUM *numerator, const BIGNUM *divisor,
+                     BN_CTX *ctx) {
+  if (BN_is_negative(numerator) || BN_is_negative(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (BN_is_zero(divisor)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+
+  // This function implements long division in binary. It is not very efficient,
+  // but it is simple, easy to make constant-time, and performant enough for RSA
+  // key generation.
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *q = quotient, *r = remainder;
+  if (quotient == NULL || quotient == numerator || quotient == divisor) {
+    q = BN_CTX_get(ctx);
+  }
+  if (remainder == NULL || remainder == numerator || remainder == divisor) {
+    r = BN_CTX_get(ctx);
+  }
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (q == NULL || r == NULL || tmp == NULL ||
+      !bn_wexpand(q, numerator->width) ||
+      !bn_wexpand(r, divisor->width) ||
+      !bn_wexpand(tmp, divisor->width)) {
+    goto err;
+  }
+
+  OPENSSL_memset(q->d, 0, numerator->width * sizeof(BN_ULONG));
+  q->width = numerator->width;
+  q->neg = 0;
+
+  OPENSSL_memset(r->d, 0, divisor->width * sizeof(BN_ULONG));
+  r->width = divisor->width;
+  r->neg = 0;
+
+  // Incorporate |numerator| into |r|, one bit at a time, reducing after each
+  // step. At the start of each loop iteration, |r| < |divisor|
+  for (int i = numerator->width - 1; i >= 0; i--) {
+    for (int bit = BN_BITS2 - 1; bit >= 0; bit--) {
+      // Incorporate the next bit of the numerator, by computing
+      // r = 2*r or 2*r + 1. Note the result fits in one more word. We store the
+      // extra word in |carry|.
+      BN_ULONG carry = bn_add_words(r->d, r->d, r->d, divisor->width);
+      r->d[0] |= (numerator->d[i] >> bit) & 1;
+      // |r| was previously fully-reduced, so we know:
+      //      2*0 <= r <= 2*(divisor-1) + 1
+      //        0 <= r <= 2*divisor - 1 < 2*divisor.
+      // Thus |r| satisfies the preconditions for |bn_reduce_once_in_place|.
+      BN_ULONG subtracted = bn_reduce_once_in_place(r->d, carry, divisor->d,
+                                                    tmp->d, divisor->width);
+      // The corresponding bit of the quotient is set iff we needed to subtract.
+      q->d[i] |= (~subtracted & 1) << bit;
+    }
+  }
+
+  if ((quotient != NULL && !BN_copy(quotient, q)) ||
+      (remainder != NULL && !BN_copy(remainder, r))) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static BIGNUM *bn_scratch_space_from_ctx(size_t width, BN_CTX *ctx) {
+  BIGNUM *ret = BN_CTX_get(ctx);
+  if (ret == NULL ||
+      !bn_wexpand(ret, width)) {
+    return NULL;
+  }
+  ret->neg = 0;
+  ret->width = width;
+  return ret;
+}
+
+// bn_resized_from_ctx returns |bn| with width at least |width| or NULL on
+// error. This is so it may be used with low-level "words" functions. If
+// necessary, it allocates a new |BIGNUM| with a lifetime of the current scope
+// in |ctx|, so the caller does not need to explicitly free it. |bn| must fit in
+// |width| words.
+static const BIGNUM *bn_resized_from_ctx(const BIGNUM *bn, size_t width,
+                                         BN_CTX *ctx) {
+  if ((size_t)bn->width >= width) {
+    // Any excess words must be zero.
+    assert(bn_fits_in_words(bn, width));
+    return bn;
+  }
+  BIGNUM *ret = bn_scratch_space_from_ctx(width, ctx);
+  if (ret == NULL ||
+      !BN_copy(ret, bn) ||
+      !bn_resize_words(ret, width)) {
+    return NULL;
+  }
+  return ret;
+}
+
+int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (!BN_add(r, a, b)) {
+    return 0;
+  }
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_add_consttime(r, a, b, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int bn_mod_add_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  a = bn_resized_from_ctx(a, m->width, ctx);
+  b = bn_resized_from_ctx(b, m->width, ctx);
+  BIGNUM *tmp = bn_scratch_space_from_ctx(m->width, ctx);
+  int ok = a != NULL && b != NULL && tmp != NULL &&
+           bn_wexpand(r, m->width);
+  if (ok) {
+    bn_mod_add_words(r->d, a->d, b->d, m->d, tmp->d, m->width);
+    r->width = m->width;
+    r->neg = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (!BN_sub(r, a, b)) {
+    return 0;
+  }
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int bn_mod_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  a = bn_resized_from_ctx(a, m->width, ctx);
+  b = bn_resized_from_ctx(b, m->width, ctx);
+  BIGNUM *tmp = bn_scratch_space_from_ctx(m->width, ctx);
+  int ok = a != NULL && b != NULL && tmp != NULL &&
+           bn_wexpand(r, m->width);
+  if (ok) {
+    bn_mod_sub_words(r->d, a->d, b->d, m->d, tmp->d, m->width);
+    r->width = m->width;
+    r->neg = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_sub_consttime(r, a, b, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx) {
+  BIGNUM *t;
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL) {
+    goto err;
+  }
+
+  if (a == b) {
+    if (!BN_sqr(t, a, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_mul(t, a, b, ctx)) {
+      goto err;
+    }
+  }
+
+  if (!BN_nnmod(r, t, m, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx) {
+  if (!BN_sqr(r, a, ctx)) {
+    return 0;
+  }
+
+  // r->neg == 0,  thus we don't need BN_nnmod
+  return BN_mod(r, r, m, ctx);
+}
+
+int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                  BN_CTX *ctx) {
+  BIGNUM *abs_m = NULL;
+  int ret;
+
+  if (!BN_nnmod(r, a, m, ctx)) {
+    return 0;
+  }
+
+  if (m->neg) {
+    abs_m = BN_dup(m);
+    if (abs_m == NULL) {
+      return 0;
+    }
+    abs_m->neg = 0;
+  }
+
+  ret = bn_mod_lshift_consttime(r, r, n, (abs_m ? abs_m : m), ctx);
+
+  BN_free(abs_m);
+  return ret;
+}
+
+int bn_mod_lshift_consttime(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                            BN_CTX *ctx) {
+  if (!BN_copy(r, a)) {
+    return 0;
+  }
+  for (int i = 0; i < n; i++) {
+    if (!bn_mod_lshift1_consttime(r, r, m, ctx)) {
+      return 0;
+    }
+  }
+  return 1;
+}
+
+int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_lshift_consttime(r, a, n, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx) {
+  if (!BN_lshift1(r, a)) {
+    return 0;
+  }
+
+  return BN_nnmod(r, r, m, ctx);
+}
+
+int bn_mod_lshift1_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                             BN_CTX *ctx) {
+  return bn_mod_add_consttime(r, a, a, m, ctx);
+}
+
+int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *m) {
+  BN_CTX *ctx = BN_CTX_new();
+  int ok = ctx != NULL &&
+           bn_mod_lshift1_consttime(r, a, m, ctx);
+  BN_CTX_free(ctx);
+  return ok;
+}
+
+BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w) {
+  BN_ULONG ret = 0;
+  int i, j;
+
+  if (!w) {
+    // actually this an error (division by zero)
+    return (BN_ULONG) - 1;
+  }
+
+  if (a->width == 0) {
+    return 0;
+  }
+
+  // normalize input for |bn_div_rem_words|.
+  j = BN_BITS2 - BN_num_bits_word(w);
+  w <<= j;
+  if (!BN_lshift(a, a, j)) {
+    return (BN_ULONG) - 1;
+  }
+
+  for (i = a->width - 1; i >= 0; i--) {
+    BN_ULONG l = a->d[i];
+    BN_ULONG d;
+    BN_ULONG unused_rem;
+    bn_div_rem_words(&d, &unused_rem, ret, l, w);
+    ret = l - (d * w);
+    a->d[i] = d;
+  }
+
+  bn_set_minimal_width(a);
+  ret >>= j;
+  return ret;
+}
+
+BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w) {
+#ifndef BN_CAN_DIVIDE_ULLONG
+  BN_ULONG ret = 0;
+#else
+  BN_ULLONG ret = 0;
+#endif
+  int i;
+
+  if (w == 0) {
+    return (BN_ULONG) -1;
+  }
+
+#ifndef BN_CAN_DIVIDE_ULLONG
+  // If |w| is too long and we don't have |BN_ULLONG| division then we need to
+  // fall back to using |BN_div_word|.
+  if (w > ((BN_ULONG)1 << BN_BITS4)) {
+    BIGNUM *tmp = BN_dup(a);
+    if (tmp == NULL) {
+      return (BN_ULONG)-1;
+    }
+    ret = BN_div_word(tmp, w);
+    BN_free(tmp);
+    return ret;
+  }
+#endif
+
+  for (i = a->width - 1; i >= 0; i--) {
+#ifndef BN_CAN_DIVIDE_ULLONG
+    ret = ((ret << BN_BITS4) | ((a->d[i] >> BN_BITS4) & BN_MASK2l)) % w;
+    ret = ((ret << BN_BITS4) | (a->d[i] & BN_MASK2l)) % w;
+#else
+    ret = (BN_ULLONG)(((ret << (BN_ULLONG)BN_BITS2) | a->d[i]) % (BN_ULLONG)w);
+#endif
+  }
+  return (BN_ULONG)ret;
+}
+
+int BN_mod_pow2(BIGNUM *r, const BIGNUM *a, size_t e) {
+  if (e == 0 || a->width == 0) {
+    BN_zero(r);
+    return 1;
+  }
+
+  size_t num_words = 1 + ((e - 1) / BN_BITS2);
+
+  // If |a| definitely has less than |e| bits, just BN_copy.
+  if ((size_t) a->width < num_words) {
+    return BN_copy(r, a) != NULL;
+  }
+
+  // Otherwise, first make sure we have enough space in |r|.
+  // Note that this will fail if num_words > INT_MAX.
+  if (!bn_wexpand(r, num_words)) {
+    return 0;
+  }
+
+  // Copy the content of |a| into |r|.
+  OPENSSL_memcpy(r->d, a->d, num_words * sizeof(BN_ULONG));
+
+  // If |e| isn't word-aligned, we have to mask off some of our bits.
+  size_t top_word_exponent = e % (sizeof(BN_ULONG) * 8);
+  if (top_word_exponent != 0) {
+    r->d[num_words - 1] &= (((BN_ULONG) 1) << top_word_exponent) - 1;
+  }
+
+  // Fill in the remaining fields of |r|.
+  r->neg = a->neg;
+  r->width = (int) num_words;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_nnmod_pow2(BIGNUM *r, const BIGNUM *a, size_t e) {
+  if (!BN_mod_pow2(r, a, e)) {
+    return 0;
+  }
+
+  // If the returned value was non-negative, we're done.
+  if (BN_is_zero(r) || !r->neg) {
+    return 1;
+  }
+
+  size_t num_words = 1 + (e - 1) / BN_BITS2;
+
+  // Expand |r| to the size of our modulus.
+  if (!bn_wexpand(r, num_words)) {
+    return 0;
+  }
+
+  // Clear the upper words of |r|.
+  OPENSSL_memset(&r->d[r->width], 0, (num_words - r->width) * BN_BYTES);
+
+  // Set parameters of |r|.
+  r->neg = 0;
+  r->width = (int) num_words;
+
+  // Now, invert every word. The idea here is that we want to compute 2^e-|x|,
+  // which is actually equivalent to the twos-complement representation of |x|
+  // in |e| bits, which is -x = ~x + 1.
+  for (int i = 0; i < r->width; i++) {
+    r->d[i] = ~r->d[i];
+  }
+
+  // If our exponent doesn't span the top word, we have to mask the rest.
+  size_t top_word_exponent = e % BN_BITS2;
+  if (top_word_exponent != 0) {
+    r->d[r->width - 1] &= (((BN_ULONG) 1) << top_word_exponent) - 1;
+  }
+
+  // Keep the minimal-width invariant for |BIGNUM|.
+  bn_set_minimal_width(r);
+
+  // Finally, add one, for the reason described above.
+  return BN_add(r, r, BN_value_one());
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c
new file mode 100644
index 0000000..027e005
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c	
@@ -0,0 +1,87 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+// The following functions use a Barrett reduction variant to avoid leaking the
+// numerator. See http://ridiculousfish.com/blog/posts/labor-of-division-episode-i.html
+//
+// We use 32-bit numerator and 16-bit divisor for simplicity. This allows
+// computing |m| and |q| without architecture-specific code.
+
+// mod_u16 returns |n| mod |d|. |p| and |m| are the "magic numbers" for |d| (see
+// reference). For proof of correctness in Coq, see
+// https://github.com/davidben/fiat-crypto/blob/barrett/src/Arithmetic/BarrettReduction/RidiculousFish.v
+// Note the Coq version of |mod_u16| additionally includes the computation of
+// |p| and |m| from |bn_mod_u16_consttime| below.
+static uint16_t mod_u16(uint32_t n, uint16_t d, uint32_t p, uint32_t m) {
+  // Compute floor(n/d) per steps 3 through 5.
+  uint32_t q = ((uint64_t)m * n) >> 32;
+  // Note there is a typo in the reference. We right-shift by one, not two.
+  uint32_t t = ((n - q) >> 1) + q;
+  t = t >> (p - 1);
+
+  // Multiply and subtract to get the remainder.
+  n -= d * t;
+  assert(n < d);
+  return n;
+}
+
+// shift_and_add_mod_u16 returns |r| * 2^32 + |a| mod |d|. |p| and |m| are the
+// "magic numbers" for |d| (see reference).
+static uint16_t shift_and_add_mod_u16(uint16_t r, uint32_t a, uint16_t d,
+                                      uint32_t p, uint32_t m) {
+  // Incorporate |a| in two 16-bit chunks.
+  uint32_t t = r;
+  t <<= 16;
+  t |= a >> 16;
+  t = mod_u16(t, d, p, m);
+
+  t <<= 16;
+  t |= a & 0xffff;
+  t = mod_u16(t, d, p, m);
+  return t;
+}
+
+uint16_t bn_mod_u16_consttime(const BIGNUM *bn, uint16_t d) {
+  if (d <= 1) {
+    return 0;
+  }
+
+  // Compute the "magic numbers" for |d|. See steps 1 and 2.
+  // This computes p = ceil(log_2(d)).
+  uint32_t p = BN_num_bits_word(d - 1);
+  // This operation is not constant-time, but |p| and |d| are public values.
+  // Note that |p| is at most 16, so the computation fits in |uint64_t|.
+  assert(p <= 16);
+  uint32_t m = ((UINT64_C(1) << (32 + p)) + d - 1) / d;
+
+  uint16_t ret = 0;
+  for (int i = bn->width - 1; i >= 0; i--) {
+#if BN_BITS2 == 32
+    ret = shift_and_add_mod_u16(ret, bn->d[i], d, p, m);
+#elif BN_BITS2 == 64
+    ret = shift_and_add_mod_u16(ret, bn->d[i] >> 32, d, p, m);
+    ret = shift_and_add_mod_u16(ret, bn->d[i] & 0xffffffff, d, p, m);
+#else
+#error "Unknown BN_ULONG size"
+#endif
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c.grpc_back
new file mode 100644
index 0000000..7f03f28
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/div_extra.c.grpc_back	
@@ -0,0 +1,87 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+// The following functions use a Barrett reduction variant to avoid leaking the
+// numerator. See http://ridiculousfish.com/blog/posts/labor-of-division-episode-i.html
+//
+// We use 32-bit numerator and 16-bit divisor for simplicity. This allows
+// computing |m| and |q| without architecture-specific code.
+
+// mod_u16 returns |n| mod |d|. |p| and |m| are the "magic numbers" for |d| (see
+// reference). For proof of correctness in Coq, see
+// https://github.com/davidben/fiat-crypto/blob/barrett/src/Arithmetic/BarrettReduction/RidiculousFish.v
+// Note the Coq version of |mod_u16| additionally includes the computation of
+// |p| and |m| from |bn_mod_u16_consttime| below.
+static uint16_t mod_u16(uint32_t n, uint16_t d, uint32_t p, uint32_t m) {
+  // Compute floor(n/d) per steps 3 through 5.
+  uint32_t q = ((uint64_t)m * n) >> 32;
+  // Note there is a typo in the reference. We right-shift by one, not two.
+  uint32_t t = ((n - q) >> 1) + q;
+  t = t >> (p - 1);
+
+  // Multiply and subtract to get the remainder.
+  n -= d * t;
+  assert(n < d);
+  return n;
+}
+
+// shift_and_add_mod_u16 returns |r| * 2^32 + |a| mod |d|. |p| and |m| are the
+// "magic numbers" for |d| (see reference).
+static uint16_t shift_and_add_mod_u16(uint16_t r, uint32_t a, uint16_t d,
+                                      uint32_t p, uint32_t m) {
+  // Incorporate |a| in two 16-bit chunks.
+  uint32_t t = r;
+  t <<= 16;
+  t |= a >> 16;
+  t = mod_u16(t, d, p, m);
+
+  t <<= 16;
+  t |= a & 0xffff;
+  t = mod_u16(t, d, p, m);
+  return t;
+}
+
+uint16_t bn_mod_u16_consttime(const BIGNUM *bn, uint16_t d) {
+  if (d <= 1) {
+    return 0;
+  }
+
+  // Compute the "magic numbers" for |d|. See steps 1 and 2.
+  // This computes p = ceil(log_2(d)).
+  uint32_t p = BN_num_bits_word(d - 1);
+  // This operation is not constant-time, but |p| and |d| are public values.
+  // Note that |p| is at most 16, so the computation fits in |uint64_t|.
+  assert(p <= 16);
+  uint32_t m = ((UINT64_C(1) << (32 + p)) + d - 1) / d;
+
+  uint16_t ret = 0;
+  for (int i = bn->width - 1; i >= 0; i--) {
+#if BN_BITS2 == 32
+    ret = shift_and_add_mod_u16(ret, bn->d[i], d, p, m);
+#elif BN_BITS2 == 64
+    ret = shift_and_add_mod_u16(ret, bn->d[i] >> 32, d, p, m);
+    ret = shift_and_add_mod_u16(ret, bn->d[i] & 0xffffffff, d, p, m);
+#else
+#error "Unknown BN_ULONG size"
+#endif
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c
new file mode 100644
index 0000000..bf70c3a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c	
@@ -0,0 +1,1288 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "rsaz_exp.h"
+
+
+int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) {
+  int i, bits, ret = 0;
+  BIGNUM *v, *rr;
+
+  BN_CTX_start(ctx);
+  if (r == a || r == p) {
+    rr = BN_CTX_get(ctx);
+  } else {
+    rr = r;
+  }
+
+  v = BN_CTX_get(ctx);
+  if (rr == NULL || v == NULL) {
+    goto err;
+  }
+
+  if (BN_copy(v, a) == NULL) {
+    goto err;
+  }
+  bits = BN_num_bits(p);
+
+  if (BN_is_odd(p)) {
+    if (BN_copy(rr, a) == NULL) {
+      goto err;
+    }
+  } else {
+    if (!BN_one(rr)) {
+      goto err;
+    }
+  }
+
+  for (i = 1; i < bits; i++) {
+    if (!BN_sqr(v, v, ctx)) {
+      goto err;
+    }
+    if (BN_is_bit_set(p, i)) {
+      if (!BN_mul(rr, rr, v, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  if (r != rr && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+typedef struct bn_recp_ctx_st {
+  BIGNUM N;   // the divisor
+  BIGNUM Nr;  // the reciprocal
+  int num_bits;
+  int shift;
+  int flags;
+} BN_RECP_CTX;
+
+static void BN_RECP_CTX_init(BN_RECP_CTX *recp) {
+  BN_init(&recp->N);
+  BN_init(&recp->Nr);
+  recp->num_bits = 0;
+  recp->shift = 0;
+  recp->flags = 0;
+}
+
+static void BN_RECP_CTX_free(BN_RECP_CTX *recp) {
+  if (recp == NULL) {
+    return;
+  }
+
+  BN_free(&recp->N);
+  BN_free(&recp->Nr);
+}
+
+static int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx) {
+  if (!BN_copy(&(recp->N), d)) {
+    return 0;
+  }
+  BN_zero(&recp->Nr);
+  recp->num_bits = BN_num_bits(d);
+  recp->shift = 0;
+
+  return 1;
+}
+
+// len is the expected size of the result We actually calculate with an extra
+// word of precision, so we can do faster division if the remainder is not
+// required.
+// r := 2^len / m
+static int BN_reciprocal(BIGNUM *r, const BIGNUM *m, int len, BN_CTX *ctx) {
+  int ret = -1;
+  BIGNUM *t;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL) {
+    goto err;
+  }
+
+  if (!BN_set_bit(t, len)) {
+    goto err;
+  }
+
+  if (!BN_div(r, NULL, t, m, ctx)) {
+    goto err;
+  }
+
+  ret = len;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m,
+                       BN_RECP_CTX *recp, BN_CTX *ctx) {
+  int i, j, ret = 0;
+  BIGNUM *a, *b, *d, *r;
+
+  BN_CTX_start(ctx);
+  a = BN_CTX_get(ctx);
+  b = BN_CTX_get(ctx);
+  if (dv != NULL) {
+    d = dv;
+  } else {
+    d = BN_CTX_get(ctx);
+  }
+
+  if (rem != NULL) {
+    r = rem;
+  } else {
+    r = BN_CTX_get(ctx);
+  }
+
+  if (a == NULL || b == NULL || d == NULL || r == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(m, &recp->N) < 0) {
+    BN_zero(d);
+    if (!BN_copy(r, m)) {
+      goto err;
+    }
+    BN_CTX_end(ctx);
+    return 1;
+  }
+
+  // We want the remainder
+  // Given input of ABCDEF / ab
+  // we need multiply ABCDEF by 3 digests of the reciprocal of ab
+
+  // i := max(BN_num_bits(m), 2*BN_num_bits(N))
+  i = BN_num_bits(m);
+  j = recp->num_bits << 1;
+  if (j > i) {
+    i = j;
+  }
+
+  // Nr := round(2^i / N)
+  if (i != recp->shift) {
+    recp->shift =
+        BN_reciprocal(&(recp->Nr), &(recp->N), i,
+                      ctx);  // BN_reciprocal returns i, or -1 for an error
+  }
+
+  if (recp->shift == -1) {
+    goto err;
+  }
+
+  // d := |round(round(m / 2^BN_num_bits(N)) * recp->Nr / 2^(i -
+  // BN_num_bits(N)))|
+  //    = |round(round(m / 2^BN_num_bits(N)) * round(2^i / N) / 2^(i -
+  // BN_num_bits(N)))|
+  //   <= |(m / 2^BN_num_bits(N)) * (2^i / N) * (2^BN_num_bits(N) / 2^i)|
+  //    = |m/N|
+  if (!BN_rshift(a, m, recp->num_bits)) {
+    goto err;
+  }
+  if (!BN_mul(b, a, &(recp->Nr), ctx)) {
+    goto err;
+  }
+  if (!BN_rshift(d, b, i - recp->num_bits)) {
+    goto err;
+  }
+  d->neg = 0;
+
+  if (!BN_mul(b, &(recp->N), d, ctx)) {
+    goto err;
+  }
+  if (!BN_usub(r, m, b)) {
+    goto err;
+  }
+  r->neg = 0;
+
+  j = 0;
+  while (BN_ucmp(r, &(recp->N)) >= 0) {
+    if (j++ > 2) {
+      OPENSSL_PUT_ERROR(BN, BN_R_BAD_RECIPROCAL);
+      goto err;
+    }
+    if (!BN_usub(r, r, &(recp->N))) {
+      goto err;
+    }
+    if (!BN_add_word(d, 1)) {
+      goto err;
+    }
+  }
+
+  r->neg = BN_is_zero(r) ? 0 : m->neg;
+  d->neg = m->neg ^ recp->N.neg;
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int BN_mod_mul_reciprocal(BIGNUM *r, const BIGNUM *x, const BIGNUM *y,
+                                 BN_RECP_CTX *recp, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *a;
+  const BIGNUM *ca;
+
+  BN_CTX_start(ctx);
+  a = BN_CTX_get(ctx);
+  if (a == NULL) {
+    goto err;
+  }
+
+  if (y != NULL) {
+    if (x == y) {
+      if (!BN_sqr(a, x, ctx)) {
+        goto err;
+      }
+    } else {
+      if (!BN_mul(a, x, y, ctx)) {
+        goto err;
+      }
+    }
+    ca = a;
+  } else {
+    ca = x;  // Just do the mod
+  }
+
+  ret = BN_div_recp(NULL, r, ca, recp, ctx);
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+// BN_window_bits_for_exponent_size returns sliding window size for mod_exp with
+// a |b| bit exponent.
+//
+// For window size 'w' (w >= 2) and a random 'b' bits exponent, the number of
+// multiplications is a constant plus on average
+//
+//    2^(w-1) + (b-w)/(w+1);
+//
+// here 2^(w-1)  is for precomputing the table (we actually need entries only
+// for windows that have the lowest bit set), and (b-w)/(w+1)  is an
+// approximation for the expected number of w-bit windows, not counting the
+// first one.
+//
+// Thus we should use
+//
+//    w >= 6  if        b > 671
+//     w = 5  if  671 > b > 239
+//     w = 4  if  239 > b >  79
+//     w = 3  if   79 > b >  23
+//    w <= 2  if   23 > b
+//
+// (with draws in between).  Very small exponents are often selected
+// with low Hamming weight, so we use  w = 1  for b <= 23.
+static int BN_window_bits_for_exponent_size(int b) {
+  if (b > 671) {
+    return 6;
+  }
+  if (b > 239) {
+    return 5;
+  }
+  if (b > 79) {
+    return 4;
+  }
+  if (b > 23) {
+    return 3;
+  }
+  return 1;
+}
+
+// TABLE_SIZE is the maximum precomputation table size for *variable* sliding
+// windows. This must be 2^(max_window - 1), where max_window is the largest
+// value returned from |BN_window_bits_for_exponent_size|.
+#define TABLE_SIZE 32
+
+// TABLE_BITS_SMALL is the smallest value returned from
+// |BN_window_bits_for_exponent_size| when |b| is at most |BN_BITS2| *
+// |BN_SMALL_MAX_WORDS| words.
+#define TABLE_BITS_SMALL 5
+
+// TABLE_SIZE_SMALL is the same as |TABLE_SIZE|, but when |b| is at most
+// |BN_BITS2| * |BN_SMALL_MAX_WORDS|.
+#define TABLE_SIZE_SMALL (1 << (TABLE_BITS_SMALL - 1))
+
+static int mod_exp_recp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                        const BIGNUM *m, BN_CTX *ctx) {
+  int i, j, ret = 0, wstart, window;
+  int start = 1;
+  BIGNUM *aa;
+  // Table of variables obtained from 'ctx'
+  BIGNUM *val[TABLE_SIZE];
+  BN_RECP_CTX recp;
+
+  // This function is only called on even moduli.
+  assert(!BN_is_odd(m));
+
+  int bits = BN_num_bits(p);
+  if (bits == 0) {
+    return BN_one(r);
+  }
+
+  BN_CTX_start(ctx);
+  aa = BN_CTX_get(ctx);
+  val[0] = BN_CTX_get(ctx);
+  if (!aa || !val[0]) {
+    goto err;
+  }
+
+  BN_RECP_CTX_init(&recp);
+  if (m->neg) {
+    // ignore sign of 'm'
+    if (!BN_copy(aa, m)) {
+      goto err;
+    }
+    aa->neg = 0;
+    if (BN_RECP_CTX_set(&recp, aa, ctx) <= 0) {
+      goto err;
+    }
+  } else {
+    if (BN_RECP_CTX_set(&recp, m, ctx) <= 0) {
+      goto err;
+    }
+  }
+
+  if (!BN_nnmod(val[0], a, m, ctx)) {
+    goto err;  // 1
+  }
+  if (BN_is_zero(val[0])) {
+    BN_zero(r);
+    ret = 1;
+    goto err;
+  }
+
+  window = BN_window_bits_for_exponent_size(bits);
+  if (window > 1) {
+    if (!BN_mod_mul_reciprocal(aa, val[0], val[0], &recp, ctx)) {
+      goto err;  // 2
+    }
+    j = 1 << (window - 1);
+    for (i = 1; i < j; i++) {
+      if (((val[i] = BN_CTX_get(ctx)) == NULL) ||
+          !BN_mod_mul_reciprocal(val[i], val[i - 1], aa, &recp, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  start = 1;  // This is used to avoid multiplication etc
+              // when there is only the value '1' in the
+              // buffer.
+  wstart = bits - 1;  // The top bit of the window
+
+  if (!BN_one(r)) {
+    goto err;
+  }
+
+  for (;;) {
+    int wvalue;  // The 'value' of the window
+    int wend;  // The bottom bit of the window
+
+    if (!BN_is_bit_set(p, wstart)) {
+      if (!start) {
+        if (!BN_mod_mul_reciprocal(r, r, r, &recp, ctx)) {
+          goto err;
+        }
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a 'set' bit, we now need to work out
+    // how bit a window to do.  To do this we need to scan
+    // forward until the last set bit before the end of the
+    // window
+    wvalue = 1;
+    wend = 0;
+    for (i = 1; i < window; i++) {
+      if (wstart - i < 0) {
+        break;
+      }
+      if (BN_is_bit_set(p, wstart - i)) {
+        wvalue <<= (i - wend);
+        wvalue |= 1;
+        wend = i;
+      }
+    }
+
+    // wend is the size of the current window
+    j = wend + 1;
+    // add the 'bytes above'
+    if (!start) {
+      for (i = 0; i < j; i++) {
+        if (!BN_mod_mul_reciprocal(r, r, r, &recp, ctx)) {
+          goto err;
+        }
+      }
+    }
+
+    // wvalue will be an odd number < 2^window
+    if (!BN_mod_mul_reciprocal(r, r, val[wvalue >> 1], &recp, ctx)) {
+      goto err;
+    }
+
+    // move the 'window' down further
+    wstart -= wend + 1;
+    start = 0;
+    if (wstart < 0) {
+      break;
+    }
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_RECP_CTX_free(&recp);
+  return ret;
+}
+
+int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    if (!BN_nnmod(r, a, m, ctx)) {
+      return 0;
+    }
+    a = r;
+  }
+
+  if (BN_is_odd(m)) {
+    return BN_mod_exp_mont(r, a, p, m, ctx, NULL);
+  }
+
+  return mod_exp_recp(r, a, p, m, ctx);
+}
+
+int BN_mod_exp_mont(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
+                    const BIGNUM *m, BN_CTX *ctx, const BN_MONT_CTX *mont) {
+  if (!BN_is_odd(m)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  int bits = BN_num_bits(p);
+  if (bits == 0) {
+    // x**0 mod 1 is still zero.
+    if (BN_abs_is_word(m, 1)) {
+      BN_zero(rr);
+      return 1;
+    }
+    return BN_one(rr);
+  }
+
+  int ret = 0;
+  BIGNUM *val[TABLE_SIZE];
+  BN_MONT_CTX *new_mont = NULL;
+
+  BN_CTX_start(ctx);
+  BIGNUM *r = BN_CTX_get(ctx);
+  val[0] = BN_CTX_get(ctx);
+  if (r == NULL || val[0] == NULL) {
+    goto err;
+  }
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_consttime(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // We exponentiate by looking at sliding windows of the exponent and
+  // precomputing powers of |a|. Windows may be shifted so they always end on a
+  // set bit, so only precompute odd powers. We compute val[i] = a^(2*i + 1)
+  // for i = 0 to 2^(window-1), all in Montgomery form.
+  int window = BN_window_bits_for_exponent_size(bits);
+  if (!BN_to_montgomery(val[0], a, mont, ctx)) {
+    goto err;
+  }
+  if (window > 1) {
+    BIGNUM *d = BN_CTX_get(ctx);
+    if (d == NULL ||
+        !BN_mod_mul_montgomery(d, val[0], val[0], mont, ctx)) {
+      goto err;
+    }
+    for (int i = 1; i < 1 << (window - 1); i++) {
+      val[i] = BN_CTX_get(ctx);
+      if (val[i] == NULL ||
+          !BN_mod_mul_montgomery(val[i], val[i - 1], d, mont, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  // |p| is non-zero, so at least one window is non-zero. To save some
+  // multiplications, defer initializing |r| until then.
+  int r_is_one = 1;
+  int wstart = bits - 1;  // The top bit of the window.
+  for (;;) {
+    if (!BN_is_bit_set(p, wstart)) {
+      if (!r_is_one && !BN_mod_mul_montgomery(r, r, r, mont, ctx)) {
+        goto err;
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a set bit. Find the largest window we can use.
+    int wvalue = 1;
+    int wsize = 0;
+    for (int i = 1; i < window && i <= wstart; i++) {
+      if (BN_is_bit_set(p, wstart - i)) {
+        wvalue <<= (i - wsize);
+        wvalue |= 1;
+        wsize = i;
+      }
+    }
+
+    // Shift |r| to the end of the window.
+    if (!r_is_one) {
+      for (int i = 0; i < wsize + 1; i++) {
+        if (!BN_mod_mul_montgomery(r, r, r, mont, ctx)) {
+          goto err;
+        }
+      }
+    }
+
+    assert(wvalue & 1);
+    assert(wvalue < (1 << window));
+    if (r_is_one) {
+      if (!BN_copy(r, val[wvalue >> 1])) {
+        goto err;
+      }
+    } else if (!BN_mod_mul_montgomery(r, r, val[wvalue >> 1], mont, ctx)) {
+      goto err;
+    }
+
+    r_is_one = 0;
+    if (wstart == wsize) {
+      break;
+    }
+    wstart -= wsize + 1;
+  }
+
+  // |p| is non-zero, so |r_is_one| must be cleared at some point.
+  assert(!r_is_one);
+
+  if (!BN_from_montgomery(rr, r, mont, ctx)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+void bn_mod_exp_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                           const BN_ULONG *p, size_t num_p,
+                           const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  assert(BN_is_odd(&mont->N));
+
+  // Count the number of bits in |p|. Note this function treats |p| as public.
+  while (num_p != 0 && p[num_p - 1] == 0) {
+    num_p--;
+  }
+  if (num_p == 0) {
+    bn_from_montgomery_small(r, mont->RR.d, num, mont);
+    return;
+  }
+  unsigned bits = BN_num_bits_word(p[num_p - 1]) + (num_p - 1) * BN_BITS2;
+  assert(bits != 0);
+
+  // We exponentiate by looking at sliding windows of the exponent and
+  // precomputing powers of |a|. Windows may be shifted so they always end on a
+  // set bit, so only precompute odd powers. We compute val[i] = a^(2*i + 1) for
+  // i = 0 to 2^(window-1), all in Montgomery form.
+  unsigned window = BN_window_bits_for_exponent_size(bits);
+  if (window > TABLE_BITS_SMALL) {
+    window = TABLE_BITS_SMALL;  // Tolerate excessively large |p|.
+  }
+  BN_ULONG val[TABLE_SIZE_SMALL][BN_SMALL_MAX_WORDS];
+  OPENSSL_memcpy(val[0], a, num * sizeof(BN_ULONG));
+  if (window > 1) {
+    BN_ULONG d[BN_SMALL_MAX_WORDS];
+    bn_mod_mul_montgomery_small(d, val[0], val[0], num, mont);
+    for (unsigned i = 1; i < 1u << (window - 1); i++) {
+      bn_mod_mul_montgomery_small(val[i], val[i - 1], d, num, mont);
+    }
+  }
+
+  // |p| is non-zero, so at least one window is non-zero. To save some
+  // multiplications, defer initializing |r| until then.
+  int r_is_one = 1;
+  unsigned wstart = bits - 1;  // The top bit of the window.
+  for (;;) {
+    if (!bn_is_bit_set_words(p, num_p, wstart)) {
+      if (!r_is_one) {
+        bn_mod_mul_montgomery_small(r, r, r, num, mont);
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a set bit. Find the largest window we can use.
+    unsigned wvalue = 1;
+    unsigned wsize = 0;
+    for (unsigned i = 1; i < window && i <= wstart; i++) {
+      if (bn_is_bit_set_words(p, num_p, wstart - i)) {
+        wvalue <<= (i - wsize);
+        wvalue |= 1;
+        wsize = i;
+      }
+    }
+
+    // Shift |r| to the end of the window.
+    if (!r_is_one) {
+      for (unsigned i = 0; i < wsize + 1; i++) {
+        bn_mod_mul_montgomery_small(r, r, r, num, mont);
+      }
+    }
+
+    assert(wvalue & 1);
+    assert(wvalue < (1u << window));
+    if (r_is_one) {
+      OPENSSL_memcpy(r, val[wvalue >> 1], num * sizeof(BN_ULONG));
+    } else {
+      bn_mod_mul_montgomery_small(r, r, val[wvalue >> 1], num, mont);
+    }
+    r_is_one = 0;
+    if (wstart == wsize) {
+      break;
+    }
+    wstart -= wsize + 1;
+  }
+
+  // |p| is non-zero, so |r_is_one| must be cleared at some point.
+  assert(!r_is_one);
+  OPENSSL_cleanse(val, sizeof(val));
+}
+
+void bn_mod_inverse_prime_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                                     const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+
+  // Per Fermat's Little Theorem, a^-1 = a^(p-2) (mod p) for p prime.
+  BN_ULONG p_minus_two[BN_SMALL_MAX_WORDS];
+  const BN_ULONG *p = mont->N.d;
+  OPENSSL_memcpy(p_minus_two, p, num * sizeof(BN_ULONG));
+  if (p_minus_two[0] >= 2) {
+    p_minus_two[0] -= 2;
+  } else {
+    p_minus_two[0] -= 2;
+    for (size_t i = 1; i < num; i++) {
+      if (p_minus_two[i]-- != 0) {
+        break;
+      }
+    }
+  }
+
+  bn_mod_exp_mont_small(r, a, num, p_minus_two, num, mont);
+}
+
+static void copy_to_prebuf(const BIGNUM *b, int top, BN_ULONG *table, int idx,
+                           int window) {
+  int ret = bn_copy_words(table + idx * top, top, b);
+  assert(ret);  // |b| is guaranteed to fit.
+  (void)ret;
+}
+
+static int copy_from_prebuf(BIGNUM *b, int top, const BN_ULONG *table, int idx,
+                            int window) {
+  if (!bn_wexpand(b, top)) {
+    return 0;
+  }
+
+  OPENSSL_memset(b->d, 0, sizeof(BN_ULONG) * top);
+  const int width = 1 << window;
+  for (int i = 0; i < width; i++, table += top) {
+    BN_ULONG mask = constant_time_eq_int(i, idx);
+    for (int j = 0; j < top; j++) {
+      b->d[j] |= table[j] & mask;
+    }
+  }
+
+  b->width = top;
+  return 1;
+}
+
+#define MOD_EXP_CTIME_MIN_CACHE_LINE_MASK \
+  (MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH - 1)
+
+// Window sizes optimized for fixed window size modular exponentiation
+// algorithm (BN_mod_exp_mont_consttime).
+//
+// To achieve the security goals of BN_mode_exp_mont_consttime, the maximum
+// size of the window must not exceed
+// log_2(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH).
+//
+// Window size thresholds are defined for cache line sizes of 32 and 64, cache
+// line sizes where log_2(32)=5 and log_2(64)=6 respectively. A window size of
+// 7 should only be used on processors that have a 128 byte or greater cache
+// line size.
+#if MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH == 64
+
+#define BN_window_bits_for_ctime_exponent_size(b) \
+  ((b) > 937 ? 6 : (b) > 306 ? 5 : (b) > 89 ? 4 : (b) > 22 ? 3 : 1)
+#define BN_MAX_WINDOW_BITS_FOR_CTIME_EXPONENT_SIZE (6)
+
+#elif MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH == 32
+
+#define BN_window_bits_for_ctime_exponent_size(b) \
+  ((b) > 306 ? 5 : (b) > 89 ? 4 : (b) > 22 ? 3 : 1)
+#define BN_MAX_WINDOW_BITS_FOR_CTIME_EXPONENT_SIZE (5)
+
+#endif
+
+// Given a pointer value, compute the next address that is a cache line
+// multiple.
+#define MOD_EXP_CTIME_ALIGN(x_)          \
+  ((unsigned char *)(x_) +               \
+   (MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH - \
+    (((size_t)(x_)) & (MOD_EXP_CTIME_MIN_CACHE_LINE_MASK))))
+
+// This variant of |BN_mod_exp_mont| uses fixed windows and fixed memory access
+// patterns to protect secret exponents (cf. the hyper-threading timing attacks
+// pointed out by Colin Percival,
+// http://www.daemonology.net/hyperthreading-considered-harmful/)
+int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
+                              const BIGNUM *m, BN_CTX *ctx,
+                              const BN_MONT_CTX *mont) {
+  int i, ret = 0, window, wvalue;
+  BN_MONT_CTX *new_mont = NULL;
+
+  int numPowers;
+  unsigned char *powerbufFree = NULL;
+  int powerbufLen = 0;
+  BN_ULONG *powerbuf = NULL;
+  BIGNUM tmp, am;
+
+  if (!BN_is_odd(m)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  // Use all bits stored in |p|, rather than |BN_num_bits|, so we do not leak
+  // whether the top bits are zero.
+  int max_bits = p->width * BN_BITS2;
+  int bits = max_bits;
+  if (bits == 0) {
+    // x**0 mod 1 is still zero.
+    if (BN_abs_is_word(m, 1)) {
+      BN_zero(rr);
+      return 1;
+    }
+    return BN_one(rr);
+  }
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_consttime(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // Use the width in |mont->N|, rather than the copy in |m|. The assembly
+  // implementation assumes it can use |top| to size R.
+  int top = mont->N.width;
+
+#if defined(OPENSSL_BN_ASM_MONT5) || defined(RSAZ_ENABLED)
+  // Share one large stack-allocated buffer between the RSAZ and non-RSAZ code
+  // paths. If we were to use separate static buffers for each then there is
+  // some chance that both large buffers would be allocated on the stack,
+  // causing the stack space requirement to be truly huge (~10KB).
+  alignas(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH) BN_ULONG
+    storage[MOD_EXP_CTIME_STORAGE_LEN];
+#endif
+#if defined(RSAZ_ENABLED)
+  // If the size of the operands allow it, perform the optimized RSAZ
+  // exponentiation. For further information see crypto/fipsmodule/bn/rsaz_exp.c
+  // and accompanying assembly modules.
+  if (a->width == 16 && p->width == 16 && BN_num_bits(m) == 1024 &&
+      rsaz_avx2_preferred()) {
+    if (!bn_wexpand(rr, 16)) {
+      goto err;
+    }
+    RSAZ_1024_mod_exp_avx2(rr->d, a->d, p->d, m->d, mont->RR.d, mont->n0[0],
+                           storage);
+    rr->width = 16;
+    rr->neg = 0;
+    ret = 1;
+    goto err;
+  }
+#endif
+
+  // Get the window size to use with size of p.
+  window = BN_window_bits_for_ctime_exponent_size(bits);
+#if defined(OPENSSL_BN_ASM_MONT5)
+  if (window >= 5) {
+    window = 5;  // ~5% improvement for RSA2048 sign, and even for RSA4096
+    // reserve space for mont->N.d[] copy
+    powerbufLen += top * sizeof(mont->N.d[0]);
+  }
+#endif
+
+  // Allocate a buffer large enough to hold all of the pre-computed
+  // powers of am, am itself and tmp.
+  numPowers = 1 << window;
+  powerbufLen +=
+      sizeof(m->d[0]) *
+      (top * numPowers + ((2 * top) > numPowers ? (2 * top) : numPowers));
+
+#if defined(OPENSSL_BN_ASM_MONT5)
+  if ((size_t)powerbufLen <= sizeof(storage)) {
+    powerbuf = storage;
+  }
+  // |storage| is more than large enough to handle 1024-bit inputs.
+  assert(powerbuf != NULL || top * BN_BITS2 > 1024);
+#endif
+  if (powerbuf == NULL) {
+    powerbufFree =
+        OPENSSL_malloc(powerbufLen + MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH);
+    if (powerbufFree == NULL) {
+      goto err;
+    }
+    powerbuf = (BN_ULONG *)MOD_EXP_CTIME_ALIGN(powerbufFree);
+  }
+  OPENSSL_memset(powerbuf, 0, powerbufLen);
+
+  // lay down tmp and am right after powers table
+  tmp.d = powerbuf + top * numPowers;
+  am.d = tmp.d + top;
+  tmp.width = am.width = 0;
+  tmp.dmax = am.dmax = top;
+  tmp.neg = am.neg = 0;
+  tmp.flags = am.flags = BN_FLG_STATIC_DATA;
+
+  if (!bn_one_to_montgomery(&tmp, mont, ctx)) {
+    goto err;
+  }
+
+  // prepare a^1 in Montgomery domain
+  assert(!a->neg);
+  assert(BN_ucmp(a, m) < 0);
+  if (!BN_to_montgomery(&am, a, mont, ctx)) {
+    goto err;
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT5)
+  // This optimization uses ideas from http://eprint.iacr.org/2011/239,
+  // specifically optimization of cache-timing attack countermeasures
+  // and pre-computation optimization.
+
+  // Dedicated window==4 case improves 512-bit RSA sign by ~15%, but as
+  // 512-bit RSA is hardly relevant, we omit it to spare size...
+  if (window == 5 && top > 1) {
+    const BN_ULONG *n0 = mont->n0;
+    BN_ULONG *np;
+
+    // BN_to_montgomery can contaminate words above .top
+    // [in BN_DEBUG[_DEBUG] build]...
+    for (i = am.width; i < top; i++) {
+      am.d[i] = 0;
+    }
+    for (i = tmp.width; i < top; i++) {
+      tmp.d[i] = 0;
+    }
+
+    // copy mont->N.d[] to improve cache locality
+    for (np = am.d + top, i = 0; i < top; i++) {
+      np[i] = mont->N.d[i];
+    }
+
+    bn_scatter5(tmp.d, top, powerbuf, 0);
+    bn_scatter5(am.d, am.width, powerbuf, 1);
+    bn_mul_mont(tmp.d, am.d, am.d, np, n0, top);
+    bn_scatter5(tmp.d, top, powerbuf, 2);
+
+    // same as above, but uses squaring for 1/2 of operations
+    for (i = 4; i < 32; i *= 2) {
+      bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+    }
+    for (i = 3; i < 8; i += 2) {
+      int j;
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+      for (j = 2 * i; j < 32; j *= 2) {
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_scatter5(tmp.d, top, powerbuf, j);
+      }
+    }
+    for (; i < 16; i += 2) {
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+      bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+      bn_scatter5(tmp.d, top, powerbuf, 2 * i);
+    }
+    for (; i < 32; i += 2) {
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+    }
+
+    bits--;
+    for (wvalue = 0, i = bits % 5; i >= 0; i--, bits--) {
+      wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+    }
+    bn_gather5(tmp.d, top, powerbuf, wvalue);
+
+    // At this point |bits| is 4 mod 5 and at least -1. (|bits| is the first bit
+    // that has not been read yet.)
+    assert(bits >= -1 && (bits == -1 || bits % 5 == 4));
+
+    // Scan the exponent one window at a time starting from the most
+    // significant bits.
+    if (top & 7) {
+      while (bits >= 0) {
+        for (wvalue = 0, i = 0; i < 5; i++, bits--) {
+          wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+        }
+
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont_gather5(tmp.d, tmp.d, powerbuf, np, n0, top, wvalue);
+      }
+    } else {
+      const uint8_t *p_bytes = (const uint8_t *)p->d;
+      assert(bits < max_bits);
+      // |p = 0| has been handled as a special case, so |max_bits| is at least
+      // one word.
+      assert(max_bits >= 64);
+
+      // If the first bit to be read lands in the last byte, unroll the first
+      // iteration to avoid reading past the bounds of |p->d|. (After the first
+      // iteration, we are guaranteed to be past the last byte.) Note |bits|
+      // here is the top bit, inclusive.
+      if (bits - 4 >= max_bits - 8) {
+        // Read five bits from |bits-4| through |bits|, inclusive.
+        wvalue = p_bytes[p->width * BN_BYTES - 1];
+        wvalue >>= (bits - 4) & 7;
+        wvalue &= 0x1f;
+        bits -= 5;
+        bn_power5(tmp.d, tmp.d, powerbuf, np, n0, top, wvalue);
+      }
+      while (bits >= 0) {
+        // Read five bits from |bits-4| through |bits|, inclusive.
+        int first_bit = bits - 4;
+        uint16_t val;
+        OPENSSL_memcpy(&val, p_bytes + (first_bit >> 3), sizeof(val));
+        val >>= first_bit & 7;
+        val &= 0x1f;
+        bits -= 5;
+        bn_power5(tmp.d, tmp.d, powerbuf, np, n0, top, val);
+      }
+    }
+
+    ret = bn_from_montgomery(tmp.d, tmp.d, NULL, np, n0, top);
+    tmp.width = top;
+    if (ret) {
+      if (!BN_copy(rr, &tmp)) {
+        ret = 0;
+      }
+      goto err;  // non-zero ret means it's not error
+    }
+  } else
+#endif
+  {
+    copy_to_prebuf(&tmp, top, powerbuf, 0, window);
+    copy_to_prebuf(&am, top, powerbuf, 1, window);
+
+    // If the window size is greater than 1, then calculate
+    // val[i=2..2^winsize-1]. Powers are computed as a*a^(i-1)
+    // (even powers could instead be computed as (a^(i/2))^2
+    // to use the slight performance advantage of sqr over mul).
+    if (window > 1) {
+      if (!BN_mod_mul_montgomery(&tmp, &am, &am, mont, ctx)) {
+        goto err;
+      }
+
+      copy_to_prebuf(&tmp, top, powerbuf, 2, window);
+
+      for (i = 3; i < numPowers; i++) {
+        // Calculate a^i = a^(i-1) * a
+        if (!BN_mod_mul_montgomery(&tmp, &am, &tmp, mont, ctx)) {
+          goto err;
+        }
+
+        copy_to_prebuf(&tmp, top, powerbuf, i, window);
+      }
+    }
+
+    bits--;
+    for (wvalue = 0, i = bits % window; i >= 0; i--, bits--) {
+      wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+    }
+    if (!copy_from_prebuf(&tmp, top, powerbuf, wvalue, window)) {
+      goto err;
+    }
+
+    // Scan the exponent one window at a time starting from the most
+    // significant bits.
+    while (bits >= 0) {
+      wvalue = 0;  // The 'value' of the window
+
+      // Scan the window, squaring the result as we go
+      for (i = 0; i < window; i++, bits--) {
+        if (!BN_mod_mul_montgomery(&tmp, &tmp, &tmp, mont, ctx)) {
+          goto err;
+        }
+        wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+      }
+
+      // Fetch the appropriate pre-computed value from the pre-buf
+      if (!copy_from_prebuf(&am, top, powerbuf, wvalue, window)) {
+        goto err;
+      }
+
+      // Multiply the result into the intermediate result
+      if (!BN_mod_mul_montgomery(&tmp, &tmp, &am, mont, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  // Convert the final result from montgomery to standard format
+  if (!BN_from_montgomery(rr, &tmp, mont, ctx)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  if (powerbuf != NULL && powerbufFree == NULL) {
+    OPENSSL_cleanse(powerbuf, powerbufLen);
+  }
+  OPENSSL_free(powerbufFree);
+  return (ret);
+}
+
+int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
+                         const BIGNUM *m, BN_CTX *ctx,
+                         const BN_MONT_CTX *mont) {
+  BIGNUM a_bignum;
+  BN_init(&a_bignum);
+
+  int ret = 0;
+
+  // BN_mod_exp_mont requires reduced inputs.
+  if (bn_minimal_width(m) == 1) {
+    a %= m->d[0];
+  }
+
+  if (!BN_set_word(&a_bignum, a)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = BN_mod_exp_mont(rr, &a_bignum, p, m, ctx, mont);
+
+err:
+  BN_free(&a_bignum);
+
+  return ret;
+}
+
+#define TABLE_SIZE 32
+
+int BN_mod_exp2_mont(BIGNUM *rr, const BIGNUM *a1, const BIGNUM *p1,
+                     const BIGNUM *a2, const BIGNUM *p2, const BIGNUM *m,
+                     BN_CTX *ctx, const BN_MONT_CTX *mont) {
+  BIGNUM tmp;
+  BN_init(&tmp);
+
+  int ret = 0;
+  BN_MONT_CTX *new_mont = NULL;
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_for_modulus(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // BN_mod_mul_montgomery removes one Montgomery factor, so passing one
+  // Montgomery-encoded and one non-Montgomery-encoded value gives a
+  // non-Montgomery-encoded result.
+  if (!BN_mod_exp_mont(rr, a1, p1, m, ctx, mont) ||
+      !BN_mod_exp_mont(&tmp, a2, p2, m, ctx, mont) ||
+      !BN_to_montgomery(rr, rr, mont, ctx) ||
+      !BN_mod_mul_montgomery(rr, rr, &tmp, mont, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  BN_free(&tmp);
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c.grpc_back
new file mode 100644
index 0000000..8d4a5c8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/exponentiation.c.grpc_back	
@@ -0,0 +1,1288 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/cpu.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "rsaz_exp.h"
+
+
+int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) {
+  int i, bits, ret = 0;
+  BIGNUM *v, *rr;
+
+  BN_CTX_start(ctx);
+  if (r == a || r == p) {
+    rr = BN_CTX_get(ctx);
+  } else {
+    rr = r;
+  }
+
+  v = BN_CTX_get(ctx);
+  if (rr == NULL || v == NULL) {
+    goto err;
+  }
+
+  if (BN_copy(v, a) == NULL) {
+    goto err;
+  }
+  bits = BN_num_bits(p);
+
+  if (BN_is_odd(p)) {
+    if (BN_copy(rr, a) == NULL) {
+      goto err;
+    }
+  } else {
+    if (!BN_one(rr)) {
+      goto err;
+    }
+  }
+
+  for (i = 1; i < bits; i++) {
+    if (!BN_sqr(v, v, ctx)) {
+      goto err;
+    }
+    if (BN_is_bit_set(p, i)) {
+      if (!BN_mul(rr, rr, v, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  if (r != rr && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+typedef struct bn_recp_ctx_st {
+  BIGNUM N;   // the divisor
+  BIGNUM Nr;  // the reciprocal
+  int num_bits;
+  int shift;
+  int flags;
+} BN_RECP_CTX;
+
+static void BN_RECP_CTX_init(BN_RECP_CTX *recp) {
+  BN_init(&recp->N);
+  BN_init(&recp->Nr);
+  recp->num_bits = 0;
+  recp->shift = 0;
+  recp->flags = 0;
+}
+
+static void BN_RECP_CTX_free(BN_RECP_CTX *recp) {
+  if (recp == NULL) {
+    return;
+  }
+
+  BN_free(&recp->N);
+  BN_free(&recp->Nr);
+}
+
+static int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx) {
+  if (!BN_copy(&(recp->N), d)) {
+    return 0;
+  }
+  BN_zero(&recp->Nr);
+  recp->num_bits = BN_num_bits(d);
+  recp->shift = 0;
+
+  return 1;
+}
+
+// len is the expected size of the result We actually calculate with an extra
+// word of precision, so we can do faster division if the remainder is not
+// required.
+// r := 2^len / m
+static int BN_reciprocal(BIGNUM *r, const BIGNUM *m, int len, BN_CTX *ctx) {
+  int ret = -1;
+  BIGNUM *t;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL) {
+    goto err;
+  }
+
+  if (!BN_set_bit(t, len)) {
+    goto err;
+  }
+
+  if (!BN_div(r, NULL, t, m, ctx)) {
+    goto err;
+  }
+
+  ret = len;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m,
+                       BN_RECP_CTX *recp, BN_CTX *ctx) {
+  int i, j, ret = 0;
+  BIGNUM *a, *b, *d, *r;
+
+  BN_CTX_start(ctx);
+  a = BN_CTX_get(ctx);
+  b = BN_CTX_get(ctx);
+  if (dv != NULL) {
+    d = dv;
+  } else {
+    d = BN_CTX_get(ctx);
+  }
+
+  if (rem != NULL) {
+    r = rem;
+  } else {
+    r = BN_CTX_get(ctx);
+  }
+
+  if (a == NULL || b == NULL || d == NULL || r == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(m, &recp->N) < 0) {
+    BN_zero(d);
+    if (!BN_copy(r, m)) {
+      goto err;
+    }
+    BN_CTX_end(ctx);
+    return 1;
+  }
+
+  // We want the remainder
+  // Given input of ABCDEF / ab
+  // we need multiply ABCDEF by 3 digests of the reciprocal of ab
+
+  // i := max(BN_num_bits(m), 2*BN_num_bits(N))
+  i = BN_num_bits(m);
+  j = recp->num_bits << 1;
+  if (j > i) {
+    i = j;
+  }
+
+  // Nr := round(2^i / N)
+  if (i != recp->shift) {
+    recp->shift =
+        BN_reciprocal(&(recp->Nr), &(recp->N), i,
+                      ctx);  // BN_reciprocal returns i, or -1 for an error
+  }
+
+  if (recp->shift == -1) {
+    goto err;
+  }
+
+  // d := |round(round(m / 2^BN_num_bits(N)) * recp->Nr / 2^(i -
+  // BN_num_bits(N)))|
+  //    = |round(round(m / 2^BN_num_bits(N)) * round(2^i / N) / 2^(i -
+  // BN_num_bits(N)))|
+  //   <= |(m / 2^BN_num_bits(N)) * (2^i / N) * (2^BN_num_bits(N) / 2^i)|
+  //    = |m/N|
+  if (!BN_rshift(a, m, recp->num_bits)) {
+    goto err;
+  }
+  if (!BN_mul(b, a, &(recp->Nr), ctx)) {
+    goto err;
+  }
+  if (!BN_rshift(d, b, i - recp->num_bits)) {
+    goto err;
+  }
+  d->neg = 0;
+
+  if (!BN_mul(b, &(recp->N), d, ctx)) {
+    goto err;
+  }
+  if (!BN_usub(r, m, b)) {
+    goto err;
+  }
+  r->neg = 0;
+
+  j = 0;
+  while (BN_ucmp(r, &(recp->N)) >= 0) {
+    if (j++ > 2) {
+      OPENSSL_PUT_ERROR(BN, BN_R_BAD_RECIPROCAL);
+      goto err;
+    }
+    if (!BN_usub(r, r, &(recp->N))) {
+      goto err;
+    }
+    if (!BN_add_word(d, 1)) {
+      goto err;
+    }
+  }
+
+  r->neg = BN_is_zero(r) ? 0 : m->neg;
+  d->neg = m->neg ^ recp->N.neg;
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int BN_mod_mul_reciprocal(BIGNUM *r, const BIGNUM *x, const BIGNUM *y,
+                                 BN_RECP_CTX *recp, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *a;
+  const BIGNUM *ca;
+
+  BN_CTX_start(ctx);
+  a = BN_CTX_get(ctx);
+  if (a == NULL) {
+    goto err;
+  }
+
+  if (y != NULL) {
+    if (x == y) {
+      if (!BN_sqr(a, x, ctx)) {
+        goto err;
+      }
+    } else {
+      if (!BN_mul(a, x, y, ctx)) {
+        goto err;
+      }
+    }
+    ca = a;
+  } else {
+    ca = x;  // Just do the mod
+  }
+
+  ret = BN_div_recp(NULL, r, ca, recp, ctx);
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+// BN_window_bits_for_exponent_size returns sliding window size for mod_exp with
+// a |b| bit exponent.
+//
+// For window size 'w' (w >= 2) and a random 'b' bits exponent, the number of
+// multiplications is a constant plus on average
+//
+//    2^(w-1) + (b-w)/(w+1);
+//
+// here 2^(w-1)  is for precomputing the table (we actually need entries only
+// for windows that have the lowest bit set), and (b-w)/(w+1)  is an
+// approximation for the expected number of w-bit windows, not counting the
+// first one.
+//
+// Thus we should use
+//
+//    w >= 6  if        b > 671
+//     w = 5  if  671 > b > 239
+//     w = 4  if  239 > b >  79
+//     w = 3  if   79 > b >  23
+//    w <= 2  if   23 > b
+//
+// (with draws in between).  Very small exponents are often selected
+// with low Hamming weight, so we use  w = 1  for b <= 23.
+static int BN_window_bits_for_exponent_size(int b) {
+  if (b > 671) {
+    return 6;
+  }
+  if (b > 239) {
+    return 5;
+  }
+  if (b > 79) {
+    return 4;
+  }
+  if (b > 23) {
+    return 3;
+  }
+  return 1;
+}
+
+// TABLE_SIZE is the maximum precomputation table size for *variable* sliding
+// windows. This must be 2^(max_window - 1), where max_window is the largest
+// value returned from |BN_window_bits_for_exponent_size|.
+#define TABLE_SIZE 32
+
+// TABLE_BITS_SMALL is the smallest value returned from
+// |BN_window_bits_for_exponent_size| when |b| is at most |BN_BITS2| *
+// |BN_SMALL_MAX_WORDS| words.
+#define TABLE_BITS_SMALL 5
+
+// TABLE_SIZE_SMALL is the same as |TABLE_SIZE|, but when |b| is at most
+// |BN_BITS2| * |BN_SMALL_MAX_WORDS|.
+#define TABLE_SIZE_SMALL (1 << (TABLE_BITS_SMALL - 1))
+
+static int mod_exp_recp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                        const BIGNUM *m, BN_CTX *ctx) {
+  int i, j, ret = 0, wstart, window;
+  int start = 1;
+  BIGNUM *aa;
+  // Table of variables obtained from 'ctx'
+  BIGNUM *val[TABLE_SIZE];
+  BN_RECP_CTX recp;
+
+  // This function is only called on even moduli.
+  assert(!BN_is_odd(m));
+
+  int bits = BN_num_bits(p);
+  if (bits == 0) {
+    return BN_one(r);
+  }
+
+  BN_CTX_start(ctx);
+  aa = BN_CTX_get(ctx);
+  val[0] = BN_CTX_get(ctx);
+  if (!aa || !val[0]) {
+    goto err;
+  }
+
+  BN_RECP_CTX_init(&recp);
+  if (m->neg) {
+    // ignore sign of 'm'
+    if (!BN_copy(aa, m)) {
+      goto err;
+    }
+    aa->neg = 0;
+    if (BN_RECP_CTX_set(&recp, aa, ctx) <= 0) {
+      goto err;
+    }
+  } else {
+    if (BN_RECP_CTX_set(&recp, m, ctx) <= 0) {
+      goto err;
+    }
+  }
+
+  if (!BN_nnmod(val[0], a, m, ctx)) {
+    goto err;  // 1
+  }
+  if (BN_is_zero(val[0])) {
+    BN_zero(r);
+    ret = 1;
+    goto err;
+  }
+
+  window = BN_window_bits_for_exponent_size(bits);
+  if (window > 1) {
+    if (!BN_mod_mul_reciprocal(aa, val[0], val[0], &recp, ctx)) {
+      goto err;  // 2
+    }
+    j = 1 << (window - 1);
+    for (i = 1; i < j; i++) {
+      if (((val[i] = BN_CTX_get(ctx)) == NULL) ||
+          !BN_mod_mul_reciprocal(val[i], val[i - 1], aa, &recp, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  start = 1;  // This is used to avoid multiplication etc
+              // when there is only the value '1' in the
+              // buffer.
+  wstart = bits - 1;  // The top bit of the window
+
+  if (!BN_one(r)) {
+    goto err;
+  }
+
+  for (;;) {
+    int wvalue;  // The 'value' of the window
+    int wend;  // The bottom bit of the window
+
+    if (!BN_is_bit_set(p, wstart)) {
+      if (!start) {
+        if (!BN_mod_mul_reciprocal(r, r, r, &recp, ctx)) {
+          goto err;
+        }
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a 'set' bit, we now need to work out
+    // how bit a window to do.  To do this we need to scan
+    // forward until the last set bit before the end of the
+    // window
+    wvalue = 1;
+    wend = 0;
+    for (i = 1; i < window; i++) {
+      if (wstart - i < 0) {
+        break;
+      }
+      if (BN_is_bit_set(p, wstart - i)) {
+        wvalue <<= (i - wend);
+        wvalue |= 1;
+        wend = i;
+      }
+    }
+
+    // wend is the size of the current window
+    j = wend + 1;
+    // add the 'bytes above'
+    if (!start) {
+      for (i = 0; i < j; i++) {
+        if (!BN_mod_mul_reciprocal(r, r, r, &recp, ctx)) {
+          goto err;
+        }
+      }
+    }
+
+    // wvalue will be an odd number < 2^window
+    if (!BN_mod_mul_reciprocal(r, r, val[wvalue >> 1], &recp, ctx)) {
+      goto err;
+    }
+
+    // move the 'window' down further
+    wstart -= wend + 1;
+    start = 0;
+    if (wstart < 0) {
+      break;
+    }
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_RECP_CTX_free(&recp);
+  return ret;
+}
+
+int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
+               BN_CTX *ctx) {
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    if (!BN_nnmod(r, a, m, ctx)) {
+      return 0;
+    }
+    a = r;
+  }
+
+  if (BN_is_odd(m)) {
+    return BN_mod_exp_mont(r, a, p, m, ctx, NULL);
+  }
+
+  return mod_exp_recp(r, a, p, m, ctx);
+}
+
+int BN_mod_exp_mont(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
+                    const BIGNUM *m, BN_CTX *ctx, const BN_MONT_CTX *mont) {
+  if (!BN_is_odd(m)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  int bits = BN_num_bits(p);
+  if (bits == 0) {
+    // x**0 mod 1 is still zero.
+    if (BN_abs_is_word(m, 1)) {
+      BN_zero(rr);
+      return 1;
+    }
+    return BN_one(rr);
+  }
+
+  int ret = 0;
+  BIGNUM *val[TABLE_SIZE];
+  BN_MONT_CTX *new_mont = NULL;
+
+  BN_CTX_start(ctx);
+  BIGNUM *r = BN_CTX_get(ctx);
+  val[0] = BN_CTX_get(ctx);
+  if (r == NULL || val[0] == NULL) {
+    goto err;
+  }
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_consttime(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // We exponentiate by looking at sliding windows of the exponent and
+  // precomputing powers of |a|. Windows may be shifted so they always end on a
+  // set bit, so only precompute odd powers. We compute val[i] = a^(2*i + 1)
+  // for i = 0 to 2^(window-1), all in Montgomery form.
+  int window = BN_window_bits_for_exponent_size(bits);
+  if (!BN_to_montgomery(val[0], a, mont, ctx)) {
+    goto err;
+  }
+  if (window > 1) {
+    BIGNUM *d = BN_CTX_get(ctx);
+    if (d == NULL ||
+        !BN_mod_mul_montgomery(d, val[0], val[0], mont, ctx)) {
+      goto err;
+    }
+    for (int i = 1; i < 1 << (window - 1); i++) {
+      val[i] = BN_CTX_get(ctx);
+      if (val[i] == NULL ||
+          !BN_mod_mul_montgomery(val[i], val[i - 1], d, mont, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  // |p| is non-zero, so at least one window is non-zero. To save some
+  // multiplications, defer initializing |r| until then.
+  int r_is_one = 1;
+  int wstart = bits - 1;  // The top bit of the window.
+  for (;;) {
+    if (!BN_is_bit_set(p, wstart)) {
+      if (!r_is_one && !BN_mod_mul_montgomery(r, r, r, mont, ctx)) {
+        goto err;
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a set bit. Find the largest window we can use.
+    int wvalue = 1;
+    int wsize = 0;
+    for (int i = 1; i < window && i <= wstart; i++) {
+      if (BN_is_bit_set(p, wstart - i)) {
+        wvalue <<= (i - wsize);
+        wvalue |= 1;
+        wsize = i;
+      }
+    }
+
+    // Shift |r| to the end of the window.
+    if (!r_is_one) {
+      for (int i = 0; i < wsize + 1; i++) {
+        if (!BN_mod_mul_montgomery(r, r, r, mont, ctx)) {
+          goto err;
+        }
+      }
+    }
+
+    assert(wvalue & 1);
+    assert(wvalue < (1 << window));
+    if (r_is_one) {
+      if (!BN_copy(r, val[wvalue >> 1])) {
+        goto err;
+      }
+    } else if (!BN_mod_mul_montgomery(r, r, val[wvalue >> 1], mont, ctx)) {
+      goto err;
+    }
+
+    r_is_one = 0;
+    if (wstart == wsize) {
+      break;
+    }
+    wstart -= wsize + 1;
+  }
+
+  // |p| is non-zero, so |r_is_one| must be cleared at some point.
+  assert(!r_is_one);
+
+  if (!BN_from_montgomery(rr, r, mont, ctx)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+void bn_mod_exp_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                           const BN_ULONG *p, size_t num_p,
+                           const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  assert(BN_is_odd(&mont->N));
+
+  // Count the number of bits in |p|. Note this function treats |p| as public.
+  while (num_p != 0 && p[num_p - 1] == 0) {
+    num_p--;
+  }
+  if (num_p == 0) {
+    bn_from_montgomery_small(r, mont->RR.d, num, mont);
+    return;
+  }
+  unsigned bits = BN_num_bits_word(p[num_p - 1]) + (num_p - 1) * BN_BITS2;
+  assert(bits != 0);
+
+  // We exponentiate by looking at sliding windows of the exponent and
+  // precomputing powers of |a|. Windows may be shifted so they always end on a
+  // set bit, so only precompute odd powers. We compute val[i] = a^(2*i + 1) for
+  // i = 0 to 2^(window-1), all in Montgomery form.
+  unsigned window = BN_window_bits_for_exponent_size(bits);
+  if (window > TABLE_BITS_SMALL) {
+    window = TABLE_BITS_SMALL;  // Tolerate excessively large |p|.
+  }
+  BN_ULONG val[TABLE_SIZE_SMALL][BN_SMALL_MAX_WORDS];
+  OPENSSL_memcpy(val[0], a, num * sizeof(BN_ULONG));
+  if (window > 1) {
+    BN_ULONG d[BN_SMALL_MAX_WORDS];
+    bn_mod_mul_montgomery_small(d, val[0], val[0], num, mont);
+    for (unsigned i = 1; i < 1u << (window - 1); i++) {
+      bn_mod_mul_montgomery_small(val[i], val[i - 1], d, num, mont);
+    }
+  }
+
+  // |p| is non-zero, so at least one window is non-zero. To save some
+  // multiplications, defer initializing |r| until then.
+  int r_is_one = 1;
+  unsigned wstart = bits - 1;  // The top bit of the window.
+  for (;;) {
+    if (!bn_is_bit_set_words(p, num_p, wstart)) {
+      if (!r_is_one) {
+        bn_mod_mul_montgomery_small(r, r, r, num, mont);
+      }
+      if (wstart == 0) {
+        break;
+      }
+      wstart--;
+      continue;
+    }
+
+    // We now have wstart on a set bit. Find the largest window we can use.
+    unsigned wvalue = 1;
+    unsigned wsize = 0;
+    for (unsigned i = 1; i < window && i <= wstart; i++) {
+      if (bn_is_bit_set_words(p, num_p, wstart - i)) {
+        wvalue <<= (i - wsize);
+        wvalue |= 1;
+        wsize = i;
+      }
+    }
+
+    // Shift |r| to the end of the window.
+    if (!r_is_one) {
+      for (unsigned i = 0; i < wsize + 1; i++) {
+        bn_mod_mul_montgomery_small(r, r, r, num, mont);
+      }
+    }
+
+    assert(wvalue & 1);
+    assert(wvalue < (1u << window));
+    if (r_is_one) {
+      OPENSSL_memcpy(r, val[wvalue >> 1], num * sizeof(BN_ULONG));
+    } else {
+      bn_mod_mul_montgomery_small(r, r, val[wvalue >> 1], num, mont);
+    }
+    r_is_one = 0;
+    if (wstart == wsize) {
+      break;
+    }
+    wstart -= wsize + 1;
+  }
+
+  // |p| is non-zero, so |r_is_one| must be cleared at some point.
+  assert(!r_is_one);
+  OPENSSL_cleanse(val, sizeof(val));
+}
+
+void bn_mod_inverse_prime_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                                     const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+
+  // Per Fermat's Little Theorem, a^-1 = a^(p-2) (mod p) for p prime.
+  BN_ULONG p_minus_two[BN_SMALL_MAX_WORDS];
+  const BN_ULONG *p = mont->N.d;
+  OPENSSL_memcpy(p_minus_two, p, num * sizeof(BN_ULONG));
+  if (p_minus_two[0] >= 2) {
+    p_minus_two[0] -= 2;
+  } else {
+    p_minus_two[0] -= 2;
+    for (size_t i = 1; i < num; i++) {
+      if (p_minus_two[i]-- != 0) {
+        break;
+      }
+    }
+  }
+
+  bn_mod_exp_mont_small(r, a, num, p_minus_two, num, mont);
+}
+
+static void copy_to_prebuf(const BIGNUM *b, int top, BN_ULONG *table, int idx,
+                           int window) {
+  int ret = bn_copy_words(table + idx * top, top, b);
+  assert(ret);  // |b| is guaranteed to fit.
+  (void)ret;
+}
+
+static int copy_from_prebuf(BIGNUM *b, int top, const BN_ULONG *table, int idx,
+                            int window) {
+  if (!bn_wexpand(b, top)) {
+    return 0;
+  }
+
+  OPENSSL_memset(b->d, 0, sizeof(BN_ULONG) * top);
+  const int width = 1 << window;
+  for (int i = 0; i < width; i++, table += top) {
+    BN_ULONG mask = constant_time_eq_int(i, idx);
+    for (int j = 0; j < top; j++) {
+      b->d[j] |= table[j] & mask;
+    }
+  }
+
+  b->width = top;
+  return 1;
+}
+
+#define MOD_EXP_CTIME_MIN_CACHE_LINE_MASK \
+  (MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH - 1)
+
+// Window sizes optimized for fixed window size modular exponentiation
+// algorithm (BN_mod_exp_mont_consttime).
+//
+// To achieve the security goals of BN_mode_exp_mont_consttime, the maximum
+// size of the window must not exceed
+// log_2(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH).
+//
+// Window size thresholds are defined for cache line sizes of 32 and 64, cache
+// line sizes where log_2(32)=5 and log_2(64)=6 respectively. A window size of
+// 7 should only be used on processors that have a 128 byte or greater cache
+// line size.
+#if MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH == 64
+
+#define BN_window_bits_for_ctime_exponent_size(b) \
+  ((b) > 937 ? 6 : (b) > 306 ? 5 : (b) > 89 ? 4 : (b) > 22 ? 3 : 1)
+#define BN_MAX_WINDOW_BITS_FOR_CTIME_EXPONENT_SIZE (6)
+
+#elif MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH == 32
+
+#define BN_window_bits_for_ctime_exponent_size(b) \
+  ((b) > 306 ? 5 : (b) > 89 ? 4 : (b) > 22 ? 3 : 1)
+#define BN_MAX_WINDOW_BITS_FOR_CTIME_EXPONENT_SIZE (5)
+
+#endif
+
+// Given a pointer value, compute the next address that is a cache line
+// multiple.
+#define MOD_EXP_CTIME_ALIGN(x_)          \
+  ((unsigned char *)(x_) +               \
+   (MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH - \
+    (((size_t)(x_)) & (MOD_EXP_CTIME_MIN_CACHE_LINE_MASK))))
+
+// This variant of |BN_mod_exp_mont| uses fixed windows and fixed memory access
+// patterns to protect secret exponents (cf. the hyper-threading timing attacks
+// pointed out by Colin Percival,
+// http://www.daemonology.net/hyperthreading-considered-harmful/)
+int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
+                              const BIGNUM *m, BN_CTX *ctx,
+                              const BN_MONT_CTX *mont) {
+  int i, ret = 0, window, wvalue;
+  BN_MONT_CTX *new_mont = NULL;
+
+  int numPowers;
+  unsigned char *powerbufFree = NULL;
+  int powerbufLen = 0;
+  BN_ULONG *powerbuf = NULL;
+  BIGNUM tmp, am;
+
+  if (!BN_is_odd(m)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (m->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (a->neg || BN_ucmp(a, m) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  // Use all bits stored in |p|, rather than |BN_num_bits|, so we do not leak
+  // whether the top bits are zero.
+  int max_bits = p->width * BN_BITS2;
+  int bits = max_bits;
+  if (bits == 0) {
+    // x**0 mod 1 is still zero.
+    if (BN_abs_is_word(m, 1)) {
+      BN_zero(rr);
+      return 1;
+    }
+    return BN_one(rr);
+  }
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_consttime(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // Use the width in |mont->N|, rather than the copy in |m|. The assembly
+  // implementation assumes it can use |top| to size R.
+  int top = mont->N.width;
+
+#if defined(OPENSSL_BN_ASM_MONT5) || defined(RSAZ_ENABLED)
+  // Share one large stack-allocated buffer between the RSAZ and non-RSAZ code
+  // paths. If we were to use separate static buffers for each then there is
+  // some chance that both large buffers would be allocated on the stack,
+  // causing the stack space requirement to be truly huge (~10KB).
+  alignas(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH) BN_ULONG
+    storage[MOD_EXP_CTIME_STORAGE_LEN];
+#endif
+#if defined(RSAZ_ENABLED)
+  // If the size of the operands allow it, perform the optimized RSAZ
+  // exponentiation. For further information see crypto/fipsmodule/bn/rsaz_exp.c
+  // and accompanying assembly modules.
+  if (a->width == 16 && p->width == 16 && BN_num_bits(m) == 1024 &&
+      rsaz_avx2_preferred()) {
+    if (!bn_wexpand(rr, 16)) {
+      goto err;
+    }
+    RSAZ_1024_mod_exp_avx2(rr->d, a->d, p->d, m->d, mont->RR.d, mont->n0[0],
+                           storage);
+    rr->width = 16;
+    rr->neg = 0;
+    ret = 1;
+    goto err;
+  }
+#endif
+
+  // Get the window size to use with size of p.
+  window = BN_window_bits_for_ctime_exponent_size(bits);
+#if defined(OPENSSL_BN_ASM_MONT5)
+  if (window >= 5) {
+    window = 5;  // ~5% improvement for RSA2048 sign, and even for RSA4096
+    // reserve space for mont->N.d[] copy
+    powerbufLen += top * sizeof(mont->N.d[0]);
+  }
+#endif
+
+  // Allocate a buffer large enough to hold all of the pre-computed
+  // powers of am, am itself and tmp.
+  numPowers = 1 << window;
+  powerbufLen +=
+      sizeof(m->d[0]) *
+      (top * numPowers + ((2 * top) > numPowers ? (2 * top) : numPowers));
+
+#if defined(OPENSSL_BN_ASM_MONT5)
+  if ((size_t)powerbufLen <= sizeof(storage)) {
+    powerbuf = storage;
+  }
+  // |storage| is more than large enough to handle 1024-bit inputs.
+  assert(powerbuf != NULL || top * BN_BITS2 > 1024);
+#endif
+  if (powerbuf == NULL) {
+    powerbufFree =
+        OPENSSL_malloc(powerbufLen + MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH);
+    if (powerbufFree == NULL) {
+      goto err;
+    }
+    powerbuf = (BN_ULONG *)MOD_EXP_CTIME_ALIGN(powerbufFree);
+  }
+  OPENSSL_memset(powerbuf, 0, powerbufLen);
+
+  // lay down tmp and am right after powers table
+  tmp.d = powerbuf + top * numPowers;
+  am.d = tmp.d + top;
+  tmp.width = am.width = 0;
+  tmp.dmax = am.dmax = top;
+  tmp.neg = am.neg = 0;
+  tmp.flags = am.flags = BN_FLG_STATIC_DATA;
+
+  if (!bn_one_to_montgomery(&tmp, mont, ctx)) {
+    goto err;
+  }
+
+  // prepare a^1 in Montgomery domain
+  assert(!a->neg);
+  assert(BN_ucmp(a, m) < 0);
+  if (!BN_to_montgomery(&am, a, mont, ctx)) {
+    goto err;
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT5)
+  // This optimization uses ideas from http://eprint.iacr.org/2011/239,
+  // specifically optimization of cache-timing attack countermeasures
+  // and pre-computation optimization.
+
+  // Dedicated window==4 case improves 512-bit RSA sign by ~15%, but as
+  // 512-bit RSA is hardly relevant, we omit it to spare size...
+  if (window == 5 && top > 1) {
+    const BN_ULONG *n0 = mont->n0;
+    BN_ULONG *np;
+
+    // BN_to_montgomery can contaminate words above .top
+    // [in BN_DEBUG[_DEBUG] build]...
+    for (i = am.width; i < top; i++) {
+      am.d[i] = 0;
+    }
+    for (i = tmp.width; i < top; i++) {
+      tmp.d[i] = 0;
+    }
+
+    // copy mont->N.d[] to improve cache locality
+    for (np = am.d + top, i = 0; i < top; i++) {
+      np[i] = mont->N.d[i];
+    }
+
+    bn_scatter5(tmp.d, top, powerbuf, 0);
+    bn_scatter5(am.d, am.width, powerbuf, 1);
+    bn_mul_mont(tmp.d, am.d, am.d, np, n0, top);
+    bn_scatter5(tmp.d, top, powerbuf, 2);
+
+    // same as above, but uses squaring for 1/2 of operations
+    for (i = 4; i < 32; i *= 2) {
+      bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+    }
+    for (i = 3; i < 8; i += 2) {
+      int j;
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+      for (j = 2 * i; j < 32; j *= 2) {
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_scatter5(tmp.d, top, powerbuf, j);
+      }
+    }
+    for (; i < 16; i += 2) {
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+      bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+      bn_scatter5(tmp.d, top, powerbuf, 2 * i);
+    }
+    for (; i < 32; i += 2) {
+      bn_mul_mont_gather5(tmp.d, am.d, powerbuf, np, n0, top, i - 1);
+      bn_scatter5(tmp.d, top, powerbuf, i);
+    }
+
+    bits--;
+    for (wvalue = 0, i = bits % 5; i >= 0; i--, bits--) {
+      wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+    }
+    bn_gather5(tmp.d, top, powerbuf, wvalue);
+
+    // At this point |bits| is 4 mod 5 and at least -1. (|bits| is the first bit
+    // that has not been read yet.)
+    assert(bits >= -1 && (bits == -1 || bits % 5 == 4));
+
+    // Scan the exponent one window at a time starting from the most
+    // significant bits.
+    if (top & 7) {
+      while (bits >= 0) {
+        for (wvalue = 0, i = 0; i < 5; i++, bits--) {
+          wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+        }
+
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont(tmp.d, tmp.d, tmp.d, np, n0, top);
+        bn_mul_mont_gather5(tmp.d, tmp.d, powerbuf, np, n0, top, wvalue);
+      }
+    } else {
+      const uint8_t *p_bytes = (const uint8_t *)p->d;
+      assert(bits < max_bits);
+      // |p = 0| has been handled as a special case, so |max_bits| is at least
+      // one word.
+      assert(max_bits >= 64);
+
+      // If the first bit to be read lands in the last byte, unroll the first
+      // iteration to avoid reading past the bounds of |p->d|. (After the first
+      // iteration, we are guaranteed to be past the last byte.) Note |bits|
+      // here is the top bit, inclusive.
+      if (bits - 4 >= max_bits - 8) {
+        // Read five bits from |bits-4| through |bits|, inclusive.
+        wvalue = p_bytes[p->width * BN_BYTES - 1];
+        wvalue >>= (bits - 4) & 7;
+        wvalue &= 0x1f;
+        bits -= 5;
+        bn_power5(tmp.d, tmp.d, powerbuf, np, n0, top, wvalue);
+      }
+      while (bits >= 0) {
+        // Read five bits from |bits-4| through |bits|, inclusive.
+        int first_bit = bits - 4;
+        uint16_t val;
+        OPENSSL_memcpy(&val, p_bytes + (first_bit >> 3), sizeof(val));
+        val >>= first_bit & 7;
+        val &= 0x1f;
+        bits -= 5;
+        bn_power5(tmp.d, tmp.d, powerbuf, np, n0, top, val);
+      }
+    }
+
+    ret = bn_from_montgomery(tmp.d, tmp.d, NULL, np, n0, top);
+    tmp.width = top;
+    if (ret) {
+      if (!BN_copy(rr, &tmp)) {
+        ret = 0;
+      }
+      goto err;  // non-zero ret means it's not error
+    }
+  } else
+#endif
+  {
+    copy_to_prebuf(&tmp, top, powerbuf, 0, window);
+    copy_to_prebuf(&am, top, powerbuf, 1, window);
+
+    // If the window size is greater than 1, then calculate
+    // val[i=2..2^winsize-1]. Powers are computed as a*a^(i-1)
+    // (even powers could instead be computed as (a^(i/2))^2
+    // to use the slight performance advantage of sqr over mul).
+    if (window > 1) {
+      if (!BN_mod_mul_montgomery(&tmp, &am, &am, mont, ctx)) {
+        goto err;
+      }
+
+      copy_to_prebuf(&tmp, top, powerbuf, 2, window);
+
+      for (i = 3; i < numPowers; i++) {
+        // Calculate a^i = a^(i-1) * a
+        if (!BN_mod_mul_montgomery(&tmp, &am, &tmp, mont, ctx)) {
+          goto err;
+        }
+
+        copy_to_prebuf(&tmp, top, powerbuf, i, window);
+      }
+    }
+
+    bits--;
+    for (wvalue = 0, i = bits % window; i >= 0; i--, bits--) {
+      wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+    }
+    if (!copy_from_prebuf(&tmp, top, powerbuf, wvalue, window)) {
+      goto err;
+    }
+
+    // Scan the exponent one window at a time starting from the most
+    // significant bits.
+    while (bits >= 0) {
+      wvalue = 0;  // The 'value' of the window
+
+      // Scan the window, squaring the result as we go
+      for (i = 0; i < window; i++, bits--) {
+        if (!BN_mod_mul_montgomery(&tmp, &tmp, &tmp, mont, ctx)) {
+          goto err;
+        }
+        wvalue = (wvalue << 1) + BN_is_bit_set(p, bits);
+      }
+
+      // Fetch the appropriate pre-computed value from the pre-buf
+      if (!copy_from_prebuf(&am, top, powerbuf, wvalue, window)) {
+        goto err;
+      }
+
+      // Multiply the result into the intermediate result
+      if (!BN_mod_mul_montgomery(&tmp, &tmp, &am, mont, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  // Convert the final result from montgomery to standard format
+  if (!BN_from_montgomery(rr, &tmp, mont, ctx)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  if (powerbuf != NULL && powerbufFree == NULL) {
+    OPENSSL_cleanse(powerbuf, powerbufLen);
+  }
+  OPENSSL_free(powerbufFree);
+  return (ret);
+}
+
+int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
+                         const BIGNUM *m, BN_CTX *ctx,
+                         const BN_MONT_CTX *mont) {
+  BIGNUM a_bignum;
+  BN_init(&a_bignum);
+
+  int ret = 0;
+
+  // BN_mod_exp_mont requires reduced inputs.
+  if (bn_minimal_width(m) == 1) {
+    a %= m->d[0];
+  }
+
+  if (!BN_set_word(&a_bignum, a)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = BN_mod_exp_mont(rr, &a_bignum, p, m, ctx, mont);
+
+err:
+  BN_free(&a_bignum);
+
+  return ret;
+}
+
+#define TABLE_SIZE 32
+
+int BN_mod_exp2_mont(BIGNUM *rr, const BIGNUM *a1, const BIGNUM *p1,
+                     const BIGNUM *a2, const BIGNUM *p2, const BIGNUM *m,
+                     BN_CTX *ctx, const BN_MONT_CTX *mont) {
+  BIGNUM tmp;
+  BN_init(&tmp);
+
+  int ret = 0;
+  BN_MONT_CTX *new_mont = NULL;
+
+  // Allocate a montgomery context if it was not supplied by the caller.
+  if (mont == NULL) {
+    new_mont = BN_MONT_CTX_new_for_modulus(m, ctx);
+    if (new_mont == NULL) {
+      goto err;
+    }
+    mont = new_mont;
+  }
+
+  // BN_mod_mul_montgomery removes one Montgomery factor, so passing one
+  // Montgomery-encoded and one non-Montgomery-encoded value gives a
+  // non-Montgomery-encoded result.
+  if (!BN_mod_exp_mont(rr, a1, p1, m, ctx, mont) ||
+      !BN_mod_exp_mont(&tmp, a2, p2, m, ctx, mont) ||
+      !BN_to_montgomery(rr, rr, mont, ctx) ||
+      !BN_mod_mul_montgomery(rr, rr, &tmp, mont, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(new_mont);
+  BN_free(&tmp);
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c
new file mode 100644
index 0000000..258bea2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c	
@@ -0,0 +1,378 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+int BN_mod_inverse_odd(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                       const BIGNUM *n, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+
+  if (!BN_is_odd(n)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+
+  if (BN_is_negative(a) || BN_cmp(a, n) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  BIGNUM *A, *B, *X, *Y;
+  int ret = 0;
+  int sign;
+
+  BN_CTX_start(ctx);
+  A = BN_CTX_get(ctx);
+  B = BN_CTX_get(ctx);
+  X = BN_CTX_get(ctx);
+  Y = BN_CTX_get(ctx);
+  if (Y == NULL) {
+    goto err;
+  }
+
+  BIGNUM *R = out;
+
+  BN_zero(Y);
+  if (!BN_one(X) || BN_copy(B, a) == NULL || BN_copy(A, n) == NULL) {
+    goto err;
+  }
+  A->neg = 0;
+  sign = -1;
+  // From  B = a mod |n|,  A = |n|  it follows that
+  //
+  //      0 <= B < A,
+  //     -sign*X*a  ==  B   (mod |n|),
+  //      sign*Y*a  ==  A   (mod |n|).
+
+  // Binary inversion algorithm; requires odd modulus. This is faster than the
+  // general algorithm if the modulus is sufficiently small (about 400 .. 500
+  // bits on 32-bit systems, but much more on 64-bit systems)
+  int shift;
+
+  while (!BN_is_zero(B)) {
+    //      0 < B < |n|,
+    //      0 < A <= |n|,
+    // (1) -sign*X*a  ==  B   (mod |n|),
+    // (2)  sign*Y*a  ==  A   (mod |n|)
+
+    // Now divide  B  by the maximum possible power of two in the integers,
+    // and divide  X  by the same value mod |n|.
+    // When we're done, (1) still holds.
+    shift = 0;
+    while (!BN_is_bit_set(B, shift)) {
+      // note that 0 < B
+      shift++;
+
+      if (BN_is_odd(X)) {
+        if (!BN_uadd(X, X, n)) {
+          goto err;
+        }
+      }
+      // now X is even, so we can easily divide it by two
+      if (!BN_rshift1(X, X)) {
+        goto err;
+      }
+    }
+    if (shift > 0) {
+      if (!BN_rshift(B, B, shift)) {
+        goto err;
+      }
+    }
+
+    // Same for A and Y. Afterwards, (2) still holds.
+    shift = 0;
+    while (!BN_is_bit_set(A, shift)) {
+      // note that 0 < A
+      shift++;
+
+      if (BN_is_odd(Y)) {
+        if (!BN_uadd(Y, Y, n)) {
+          goto err;
+        }
+      }
+      // now Y is even
+      if (!BN_rshift1(Y, Y)) {
+        goto err;
+      }
+    }
+    if (shift > 0) {
+      if (!BN_rshift(A, A, shift)) {
+        goto err;
+      }
+    }
+
+    // We still have (1) and (2).
+    // Both  A  and  B  are odd.
+    // The following computations ensure that
+    //
+    //     0 <= B < |n|,
+    //      0 < A < |n|,
+    // (1) -sign*X*a  ==  B   (mod |n|),
+    // (2)  sign*Y*a  ==  A   (mod |n|),
+    //
+    // and that either  A  or  B  is even in the next iteration.
+    if (BN_ucmp(B, A) >= 0) {
+      // -sign*(X + Y)*a == B - A  (mod |n|)
+      if (!BN_uadd(X, X, Y)) {
+        goto err;
+      }
+      // NB: we could use BN_mod_add_quick(X, X, Y, n), but that
+      // actually makes the algorithm slower
+      if (!BN_usub(B, B, A)) {
+        goto err;
+      }
+    } else {
+      //  sign*(X + Y)*a == A - B  (mod |n|)
+      if (!BN_uadd(Y, Y, X)) {
+        goto err;
+      }
+      // as above, BN_mod_add_quick(Y, Y, X, n) would slow things down
+      if (!BN_usub(A, A, B)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_is_one(A)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    goto err;
+  }
+
+  // The while loop (Euclid's algorithm) ends when
+  //      A == gcd(a,n);
+  // we have
+  //       sign*Y*a  ==  A  (mod |n|),
+  // where  Y  is non-negative.
+
+  if (sign < 0) {
+    if (!BN_sub(Y, n, Y)) {
+      goto err;
+    }
+  }
+  // Now  Y*a  ==  A  (mod |n|).
+
+  // Y*a == 1  (mod |n|)
+  if (!Y->neg && BN_ucmp(Y, n) < 0) {
+    if (!BN_copy(R, Y)) {
+      goto err;
+    }
+  } else {
+    if (!BN_nnmod(R, Y, n, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a, const BIGNUM *n,
+                       BN_CTX *ctx) {
+  BIGNUM *new_out = NULL;
+  if (out == NULL) {
+    new_out = BN_new();
+    if (new_out == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      return NULL;
+    }
+    out = new_out;
+  }
+
+  int ok = 0;
+  BIGNUM *a_reduced = NULL;
+  if (a->neg || BN_ucmp(a, n) >= 0) {
+    a_reduced = BN_dup(a);
+    if (a_reduced == NULL) {
+      goto err;
+    }
+    if (!BN_nnmod(a_reduced, a_reduced, n, ctx)) {
+      goto err;
+    }
+    a = a_reduced;
+  }
+
+  int no_inverse;
+  if (!BN_is_odd(n)) {
+    if (!bn_mod_inverse_consttime(out, &no_inverse, a, n, ctx)) {
+      goto err;
+    }
+  } else if (!BN_mod_inverse_odd(out, &no_inverse, a, n, ctx)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (!ok) {
+    BN_free(new_out);
+    out = NULL;
+  }
+  BN_free(a_reduced);
+  return out;
+}
+
+int BN_mod_inverse_blinded(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                           const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+
+  if (BN_is_negative(a) || BN_cmp(a, &mont->N) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  int ret = 0;
+  BIGNUM blinding_factor;
+  BN_init(&blinding_factor);
+
+  if (!BN_rand_range_ex(&blinding_factor, 1, &mont->N) ||
+      !BN_mod_mul_montgomery(out, &blinding_factor, a, mont, ctx) ||
+      !BN_mod_inverse_odd(out, out_no_inverse, out, &mont->N, ctx) ||
+      !BN_mod_mul_montgomery(out, &blinding_factor, out, mont, ctx)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_free(&blinding_factor);
+  return ret;
+}
+
+int bn_mod_inverse_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                         BN_CTX *ctx, const BN_MONT_CTX *mont_p) {
+  BN_CTX_start(ctx);
+  BIGNUM *p_minus_2 = BN_CTX_get(ctx);
+  int ok = p_minus_2 != NULL &&
+           BN_copy(p_minus_2, p) &&
+           BN_sub_word(p_minus_2, 2) &&
+           BN_mod_exp_mont(out, a, p_minus_2, p, ctx, mont_p);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int bn_mod_inverse_secret_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                                BN_CTX *ctx, const BN_MONT_CTX *mont_p) {
+  BN_CTX_start(ctx);
+  BIGNUM *p_minus_2 = BN_CTX_get(ctx);
+  int ok = p_minus_2 != NULL &&
+           BN_copy(p_minus_2, p) &&
+           BN_sub_word(p_minus_2, 2) &&
+           BN_mod_exp_mont_consttime(out, a, p_minus_2, p, ctx, mont_p);
+  BN_CTX_end(ctx);
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c.grpc_back
new file mode 100644
index 0000000..bd0fa6f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd.c.grpc_back	
@@ -0,0 +1,378 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+int BN_mod_inverse_odd(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                       const BIGNUM *n, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+
+  if (!BN_is_odd(n)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+
+  if (BN_is_negative(a) || BN_cmp(a, n) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  BIGNUM *A, *B, *X, *Y;
+  int ret = 0;
+  int sign;
+
+  BN_CTX_start(ctx);
+  A = BN_CTX_get(ctx);
+  B = BN_CTX_get(ctx);
+  X = BN_CTX_get(ctx);
+  Y = BN_CTX_get(ctx);
+  if (Y == NULL) {
+    goto err;
+  }
+
+  BIGNUM *R = out;
+
+  BN_zero(Y);
+  if (!BN_one(X) || BN_copy(B, a) == NULL || BN_copy(A, n) == NULL) {
+    goto err;
+  }
+  A->neg = 0;
+  sign = -1;
+  // From  B = a mod |n|,  A = |n|  it follows that
+  //
+  //      0 <= B < A,
+  //     -sign*X*a  ==  B   (mod |n|),
+  //      sign*Y*a  ==  A   (mod |n|).
+
+  // Binary inversion algorithm; requires odd modulus. This is faster than the
+  // general algorithm if the modulus is sufficiently small (about 400 .. 500
+  // bits on 32-bit systems, but much more on 64-bit systems)
+  int shift;
+
+  while (!BN_is_zero(B)) {
+    //      0 < B < |n|,
+    //      0 < A <= |n|,
+    // (1) -sign*X*a  ==  B   (mod |n|),
+    // (2)  sign*Y*a  ==  A   (mod |n|)
+
+    // Now divide  B  by the maximum possible power of two in the integers,
+    // and divide  X  by the same value mod |n|.
+    // When we're done, (1) still holds.
+    shift = 0;
+    while (!BN_is_bit_set(B, shift)) {
+      // note that 0 < B
+      shift++;
+
+      if (BN_is_odd(X)) {
+        if (!BN_uadd(X, X, n)) {
+          goto err;
+        }
+      }
+      // now X is even, so we can easily divide it by two
+      if (!BN_rshift1(X, X)) {
+        goto err;
+      }
+    }
+    if (shift > 0) {
+      if (!BN_rshift(B, B, shift)) {
+        goto err;
+      }
+    }
+
+    // Same for A and Y. Afterwards, (2) still holds.
+    shift = 0;
+    while (!BN_is_bit_set(A, shift)) {
+      // note that 0 < A
+      shift++;
+
+      if (BN_is_odd(Y)) {
+        if (!BN_uadd(Y, Y, n)) {
+          goto err;
+        }
+      }
+      // now Y is even
+      if (!BN_rshift1(Y, Y)) {
+        goto err;
+      }
+    }
+    if (shift > 0) {
+      if (!BN_rshift(A, A, shift)) {
+        goto err;
+      }
+    }
+
+    // We still have (1) and (2).
+    // Both  A  and  B  are odd.
+    // The following computations ensure that
+    //
+    //     0 <= B < |n|,
+    //      0 < A < |n|,
+    // (1) -sign*X*a  ==  B   (mod |n|),
+    // (2)  sign*Y*a  ==  A   (mod |n|),
+    //
+    // and that either  A  or  B  is even in the next iteration.
+    if (BN_ucmp(B, A) >= 0) {
+      // -sign*(X + Y)*a == B - A  (mod |n|)
+      if (!BN_uadd(X, X, Y)) {
+        goto err;
+      }
+      // NB: we could use BN_mod_add_quick(X, X, Y, n), but that
+      // actually makes the algorithm slower
+      if (!BN_usub(B, B, A)) {
+        goto err;
+      }
+    } else {
+      //  sign*(X + Y)*a == A - B  (mod |n|)
+      if (!BN_uadd(Y, Y, X)) {
+        goto err;
+      }
+      // as above, BN_mod_add_quick(Y, Y, X, n) would slow things down
+      if (!BN_usub(A, A, B)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_is_one(A)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    goto err;
+  }
+
+  // The while loop (Euclid's algorithm) ends when
+  //      A == gcd(a,n);
+  // we have
+  //       sign*Y*a  ==  A  (mod |n|),
+  // where  Y  is non-negative.
+
+  if (sign < 0) {
+    if (!BN_sub(Y, n, Y)) {
+      goto err;
+    }
+  }
+  // Now  Y*a  ==  A  (mod |n|).
+
+  // Y*a == 1  (mod |n|)
+  if (!Y->neg && BN_ucmp(Y, n) < 0) {
+    if (!BN_copy(R, Y)) {
+      goto err;
+    }
+  } else {
+    if (!BN_nnmod(R, Y, n, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a, const BIGNUM *n,
+                       BN_CTX *ctx) {
+  BIGNUM *new_out = NULL;
+  if (out == NULL) {
+    new_out = BN_new();
+    if (new_out == NULL) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+      return NULL;
+    }
+    out = new_out;
+  }
+
+  int ok = 0;
+  BIGNUM *a_reduced = NULL;
+  if (a->neg || BN_ucmp(a, n) >= 0) {
+    a_reduced = BN_dup(a);
+    if (a_reduced == NULL) {
+      goto err;
+    }
+    if (!BN_nnmod(a_reduced, a_reduced, n, ctx)) {
+      goto err;
+    }
+    a = a_reduced;
+  }
+
+  int no_inverse;
+  if (!BN_is_odd(n)) {
+    if (!bn_mod_inverse_consttime(out, &no_inverse, a, n, ctx)) {
+      goto err;
+    }
+  } else if (!BN_mod_inverse_odd(out, &no_inverse, a, n, ctx)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (!ok) {
+    BN_free(new_out);
+    out = NULL;
+  }
+  BN_free(a_reduced);
+  return out;
+}
+
+int BN_mod_inverse_blinded(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                           const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+
+  if (BN_is_negative(a) || BN_cmp(a, &mont->N) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+
+  int ret = 0;
+  BIGNUM blinding_factor;
+  BN_init(&blinding_factor);
+
+  if (!BN_rand_range_ex(&blinding_factor, 1, &mont->N) ||
+      !BN_mod_mul_montgomery(out, &blinding_factor, a, mont, ctx) ||
+      !BN_mod_inverse_odd(out, out_no_inverse, out, &mont->N, ctx) ||
+      !BN_mod_mul_montgomery(out, &blinding_factor, out, mont, ctx)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_free(&blinding_factor);
+  return ret;
+}
+
+int bn_mod_inverse_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                         BN_CTX *ctx, const BN_MONT_CTX *mont_p) {
+  BN_CTX_start(ctx);
+  BIGNUM *p_minus_2 = BN_CTX_get(ctx);
+  int ok = p_minus_2 != NULL &&
+           BN_copy(p_minus_2, p) &&
+           BN_sub_word(p_minus_2, 2) &&
+           BN_mod_exp_mont(out, a, p_minus_2, p, ctx, mont_p);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int bn_mod_inverse_secret_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                                BN_CTX *ctx, const BN_MONT_CTX *mont_p) {
+  BN_CTX_start(ctx);
+  BIGNUM *p_minus_2 = BN_CTX_get(ctx);
+  int ok = p_minus_2 != NULL &&
+           BN_copy(p_minus_2, p) &&
+           BN_sub_word(p_minus_2, 2) &&
+           BN_mod_exp_mont_consttime(out, a, p_minus_2, p, ctx, mont_p);
+  BN_CTX_end(ctx);
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c
new file mode 100644
index 0000000..83615d5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c	
@@ -0,0 +1,325 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+static BN_ULONG word_is_odd_mask(BN_ULONG a) { return (BN_ULONG)0 - (a & 1); }
+
+static void maybe_rshift1_words(BN_ULONG *a, BN_ULONG mask, BN_ULONG *tmp,
+                                size_t num) {
+  bn_rshift1_words(tmp, a, num);
+  bn_select_words(a, mask, tmp, a, num);
+}
+
+static void maybe_rshift1_words_carry(BN_ULONG *a, BN_ULONG carry,
+                                      BN_ULONG mask, BN_ULONG *tmp,
+                                      size_t num) {
+  maybe_rshift1_words(a, mask, tmp, num);
+  if (num != 0) {
+    carry &= mask;
+    a[num - 1] |= carry << (BN_BITS2-1);
+  }
+}
+
+static BN_ULONG maybe_add_words(BN_ULONG *a, BN_ULONG mask, const BN_ULONG *b,
+                                BN_ULONG *tmp, size_t num) {
+  BN_ULONG carry = bn_add_words(tmp, a, b, num);
+  bn_select_words(a, mask, tmp, a, num);
+  return carry & mask;
+}
+
+static int bn_gcd_consttime(BIGNUM *r, unsigned *out_shift, const BIGNUM *x,
+                            const BIGNUM *y, BN_CTX *ctx) {
+  size_t width = x->width > y->width ? x->width : y->width;
+  if (width == 0) {
+    *out_shift = 0;
+    BN_zero(r);
+    return 1;
+  }
+
+  // This is a constant-time implementation of Stein's algorithm (binary GCD).
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *u = BN_CTX_get(ctx);
+  BIGNUM *v = BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (u == NULL || v == NULL || tmp == NULL ||
+      !BN_copy(u, x) ||
+      !BN_copy(v, y) ||
+      !bn_resize_words(u, width) ||
+      !bn_resize_words(v, width) ||
+      !bn_resize_words(tmp, width)) {
+    goto err;
+  }
+
+  // Each loop iteration halves at least one of |u| and |v|. Thus we need at
+  // most the combined bit width of inputs for at least one value to be zero.
+  unsigned x_bits = x->width * BN_BITS2, y_bits = y->width * BN_BITS2;
+  unsigned num_iters = x_bits + y_bits;
+  if (num_iters < x_bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    goto err;
+  }
+
+  unsigned shift = 0;
+  for (unsigned i = 0; i < num_iters; i++) {
+    BN_ULONG both_odd = word_is_odd_mask(u->d[0]) & word_is_odd_mask(v->d[0]);
+
+    // If both |u| and |v| are odd, subtract the smaller from the larger.
+    BN_ULONG u_less_than_v =
+        (BN_ULONG)0 - bn_sub_words(tmp->d, u->d, v->d, width);
+    bn_select_words(u->d, both_odd & ~u_less_than_v, tmp->d, u->d, width);
+    bn_sub_words(tmp->d, v->d, u->d, width);
+    bn_select_words(v->d, both_odd & u_less_than_v, tmp->d, v->d, width);
+
+    // At least one of |u| and |v| is now even.
+    BN_ULONG u_is_odd = word_is_odd_mask(u->d[0]);
+    BN_ULONG v_is_odd = word_is_odd_mask(v->d[0]);
+    assert(!(u_is_odd & v_is_odd));
+
+    // If both are even, the final GCD gains a factor of two.
+    shift += 1 & (~u_is_odd & ~v_is_odd);
+
+    // Halve any which are even.
+    maybe_rshift1_words(u->d, ~u_is_odd, tmp->d, width);
+    maybe_rshift1_words(v->d, ~v_is_odd, tmp->d, width);
+  }
+
+  // One of |u| or |v| is zero at this point. The algorithm usually makes |u|
+  // zero, unless |y| was already zero on input. Fix this by combining the
+  // values.
+  assert(BN_is_zero(u) || BN_is_zero(v));
+  for (size_t i = 0; i < width; i++) {
+    v->d[i] |= u->d[i];
+  }
+
+  *out_shift = shift;
+  ret = bn_set_words(r, v->d, width);
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_gcd(BIGNUM *r, const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) {
+  unsigned shift;
+  return bn_gcd_consttime(r, &shift, x, y, ctx) &&
+         BN_lshift(r, r, shift);
+}
+
+int bn_is_relatively_prime(int *out_relatively_prime, const BIGNUM *x,
+                           const BIGNUM *y, BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX_start(ctx);
+  unsigned shift;
+  BIGNUM *gcd = BN_CTX_get(ctx);
+  if (gcd == NULL ||
+      !bn_gcd_consttime(gcd, &shift, x, y, ctx)) {
+    goto err;
+  }
+
+  // Check that 2^|shift| * |gcd| is one.
+  if (gcd->width == 0) {
+    *out_relatively_prime = 0;
+  } else {
+    BN_ULONG mask = shift | (gcd->d[0] ^ 1);
+    for (int i = 1; i < gcd->width; i++) {
+      mask |= gcd->d[i];
+    }
+    *out_relatively_prime = mask == 0;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int bn_lcm_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  unsigned shift;
+  BIGNUM *gcd = BN_CTX_get(ctx);
+  int ret = gcd != NULL &&
+            bn_mul_consttime(r, a, b, ctx) &&
+            bn_gcd_consttime(gcd, &shift, a, b, ctx) &&
+            bn_div_consttime(r, NULL, r, gcd, ctx) &&
+            bn_rshift_secret_shift(r, r, shift, ctx);
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int bn_mod_inverse_consttime(BIGNUM *r, int *out_no_inverse, const BIGNUM *a,
+                             const BIGNUM *n, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+  if (BN_is_negative(a) || BN_ucmp(a, n) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+  if (BN_is_zero(a)) {
+    if (BN_is_one(n)) {
+      BN_zero(r);
+      return 1;
+    }
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    return 0;
+  }
+
+  // This is a constant-time implementation of the extended binary GCD
+  // algorithm. It is adapted from the Handbook of Applied Cryptography, section
+  // 14.4.3, algorithm 14.51, and modified to bound coefficients and avoid
+  // negative numbers.
+  //
+  // For more details and proof of correctness, see
+  // https://github.com/mit-plv/fiat-crypto/pull/333. In particular, see |step|
+  // and |mod_inverse_consttime| for the algorithm in Gallina and see
+  // |mod_inverse_consttime_spec| for the correctness result.
+
+  if (!BN_is_odd(a) && !BN_is_odd(n)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    return 0;
+  }
+
+  // This function exists to compute the RSA private exponent, where |a| is one
+  // word. We'll thus use |a_width| when available.
+  size_t n_width = n->width, a_width = a->width;
+  if (a_width > n_width) {
+    a_width = n_width;
+  }
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *u = BN_CTX_get(ctx);
+  BIGNUM *v = BN_CTX_get(ctx);
+  BIGNUM *A = BN_CTX_get(ctx);
+  BIGNUM *B = BN_CTX_get(ctx);
+  BIGNUM *C = BN_CTX_get(ctx);
+  BIGNUM *D = BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  BIGNUM *tmp2 = BN_CTX_get(ctx);
+  if (u == NULL || v == NULL || A == NULL || B == NULL || C == NULL ||
+      D == NULL || tmp == NULL || tmp2 == NULL ||
+      !BN_copy(u, a) ||
+      !BN_copy(v, n) ||
+      !BN_one(A) ||
+      !BN_one(D) ||
+      // For convenience, size |u| and |v| equivalently.
+      !bn_resize_words(u, n_width) ||
+      !bn_resize_words(v, n_width) ||
+      // |A| and |C| are bounded by |m|.
+      !bn_resize_words(A, n_width) ||
+      !bn_resize_words(C, n_width) ||
+      // |B| and |D| are bounded by |a|.
+      !bn_resize_words(B, a_width) ||
+      !bn_resize_words(D, a_width) ||
+      // |tmp| and |tmp2| may be used at either size.
+      !bn_resize_words(tmp, n_width) ||
+      !bn_resize_words(tmp2, n_width)) {
+    goto err;
+  }
+
+  // Each loop iteration halves at least one of |u| and |v|. Thus we need at
+  // most the combined bit width of inputs for at least one value to be zero.
+  unsigned a_bits = a_width * BN_BITS2, n_bits = n_width * BN_BITS2;
+  unsigned num_iters = a_bits + n_bits;
+  if (num_iters < a_bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    goto err;
+  }
+
+  // Before and after each loop iteration, the following hold:
+  //
+  //   u = A*a - B*n
+  //   v = D*n - C*a
+  //   0 < u <= a
+  //   0 <= v <= n
+  //   0 <= A < n
+  //   0 <= B <= a
+  //   0 <= C < n
+  //   0 <= D <= a
+  //
+  // After each loop iteration, u and v only get smaller, and at least one of
+  // them shrinks by at least a factor of two.
+  for (unsigned i = 0; i < num_iters; i++) {
+    BN_ULONG both_odd = word_is_odd_mask(u->d[0]) & word_is_odd_mask(v->d[0]);
+
+    // If both |u| and |v| are odd, subtract the smaller from the larger.
+    BN_ULONG v_less_than_u =
+        (BN_ULONG)0 - bn_sub_words(tmp->d, v->d, u->d, n_width);
+    bn_select_words(v->d, both_odd & ~v_less_than_u, tmp->d, v->d, n_width);
+    bn_sub_words(tmp->d, u->d, v->d, n_width);
+    bn_select_words(u->d, both_odd & v_less_than_u, tmp->d, u->d, n_width);
+
+    // If we updated one of the values, update the corresponding coefficient.
+    BN_ULONG carry = bn_add_words(tmp->d, A->d, C->d, n_width);
+    carry -= bn_sub_words(tmp2->d, tmp->d, n->d, n_width);
+    bn_select_words(tmp->d, carry, tmp->d, tmp2->d, n_width);
+    bn_select_words(A->d, both_odd & v_less_than_u, tmp->d, A->d, n_width);
+    bn_select_words(C->d, both_odd & ~v_less_than_u, tmp->d, C->d, n_width);
+
+    bn_add_words(tmp->d, B->d, D->d, a_width);
+    bn_sub_words(tmp2->d, tmp->d, a->d, a_width);
+    bn_select_words(tmp->d, carry, tmp->d, tmp2->d, a_width);
+    bn_select_words(B->d, both_odd & v_less_than_u, tmp->d, B->d, a_width);
+    bn_select_words(D->d, both_odd & ~v_less_than_u, tmp->d, D->d, a_width);
+
+    // Our loop invariants hold at this point. Additionally, exactly one of |u|
+    // and |v| is now even.
+    BN_ULONG u_is_even = ~word_is_odd_mask(u->d[0]);
+    BN_ULONG v_is_even = ~word_is_odd_mask(v->d[0]);
+    assert(u_is_even != v_is_even);
+
+    // Halve the even one and adjust the corresponding coefficient.
+    maybe_rshift1_words(u->d, u_is_even, tmp->d, n_width);
+    BN_ULONG A_or_B_is_odd =
+        word_is_odd_mask(A->d[0]) | word_is_odd_mask(B->d[0]);
+    BN_ULONG A_carry =
+        maybe_add_words(A->d, A_or_B_is_odd & u_is_even, n->d, tmp->d, n_width);
+    BN_ULONG B_carry =
+        maybe_add_words(B->d, A_or_B_is_odd & u_is_even, a->d, tmp->d, a_width);
+    maybe_rshift1_words_carry(A->d, A_carry, u_is_even, tmp->d, n_width);
+    maybe_rshift1_words_carry(B->d, B_carry, u_is_even, tmp->d, a_width);
+
+    maybe_rshift1_words(v->d, v_is_even, tmp->d, n_width);
+    BN_ULONG C_or_D_is_odd =
+        word_is_odd_mask(C->d[0]) | word_is_odd_mask(D->d[0]);
+    BN_ULONG C_carry =
+        maybe_add_words(C->d, C_or_D_is_odd & v_is_even, n->d, tmp->d, n_width);
+    BN_ULONG D_carry =
+        maybe_add_words(D->d, C_or_D_is_odd & v_is_even, a->d, tmp->d, a_width);
+    maybe_rshift1_words_carry(C->d, C_carry, v_is_even, tmp->d, n_width);
+    maybe_rshift1_words_carry(D->d, D_carry, v_is_even, tmp->d, a_width);
+  }
+
+  assert(BN_is_zero(v));
+  if (!BN_is_one(u)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    goto err;
+  }
+
+  ret = BN_copy(r, A) != NULL;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c.grpc_back
new file mode 100644
index 0000000..30540e3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/gcd_extra.c.grpc_back	
@@ -0,0 +1,325 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+static BN_ULONG word_is_odd_mask(BN_ULONG a) { return (BN_ULONG)0 - (a & 1); }
+
+static void maybe_rshift1_words(BN_ULONG *a, BN_ULONG mask, BN_ULONG *tmp,
+                                size_t num) {
+  bn_rshift1_words(tmp, a, num);
+  bn_select_words(a, mask, tmp, a, num);
+}
+
+static void maybe_rshift1_words_carry(BN_ULONG *a, BN_ULONG carry,
+                                      BN_ULONG mask, BN_ULONG *tmp,
+                                      size_t num) {
+  maybe_rshift1_words(a, mask, tmp, num);
+  if (num != 0) {
+    carry &= mask;
+    a[num - 1] |= carry << (BN_BITS2-1);
+  }
+}
+
+static BN_ULONG maybe_add_words(BN_ULONG *a, BN_ULONG mask, const BN_ULONG *b,
+                                BN_ULONG *tmp, size_t num) {
+  BN_ULONG carry = bn_add_words(tmp, a, b, num);
+  bn_select_words(a, mask, tmp, a, num);
+  return carry & mask;
+}
+
+static int bn_gcd_consttime(BIGNUM *r, unsigned *out_shift, const BIGNUM *x,
+                            const BIGNUM *y, BN_CTX *ctx) {
+  size_t width = x->width > y->width ? x->width : y->width;
+  if (width == 0) {
+    *out_shift = 0;
+    BN_zero(r);
+    return 1;
+  }
+
+  // This is a constant-time implementation of Stein's algorithm (binary GCD).
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *u = BN_CTX_get(ctx);
+  BIGNUM *v = BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (u == NULL || v == NULL || tmp == NULL ||
+      !BN_copy(u, x) ||
+      !BN_copy(v, y) ||
+      !bn_resize_words(u, width) ||
+      !bn_resize_words(v, width) ||
+      !bn_resize_words(tmp, width)) {
+    goto err;
+  }
+
+  // Each loop iteration halves at least one of |u| and |v|. Thus we need at
+  // most the combined bit width of inputs for at least one value to be zero.
+  unsigned x_bits = x->width * BN_BITS2, y_bits = y->width * BN_BITS2;
+  unsigned num_iters = x_bits + y_bits;
+  if (num_iters < x_bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    goto err;
+  }
+
+  unsigned shift = 0;
+  for (unsigned i = 0; i < num_iters; i++) {
+    BN_ULONG both_odd = word_is_odd_mask(u->d[0]) & word_is_odd_mask(v->d[0]);
+
+    // If both |u| and |v| are odd, subtract the smaller from the larger.
+    BN_ULONG u_less_than_v =
+        (BN_ULONG)0 - bn_sub_words(tmp->d, u->d, v->d, width);
+    bn_select_words(u->d, both_odd & ~u_less_than_v, tmp->d, u->d, width);
+    bn_sub_words(tmp->d, v->d, u->d, width);
+    bn_select_words(v->d, both_odd & u_less_than_v, tmp->d, v->d, width);
+
+    // At least one of |u| and |v| is now even.
+    BN_ULONG u_is_odd = word_is_odd_mask(u->d[0]);
+    BN_ULONG v_is_odd = word_is_odd_mask(v->d[0]);
+    assert(!(u_is_odd & v_is_odd));
+
+    // If both are even, the final GCD gains a factor of two.
+    shift += 1 & (~u_is_odd & ~v_is_odd);
+
+    // Halve any which are even.
+    maybe_rshift1_words(u->d, ~u_is_odd, tmp->d, width);
+    maybe_rshift1_words(v->d, ~v_is_odd, tmp->d, width);
+  }
+
+  // One of |u| or |v| is zero at this point. The algorithm usually makes |u|
+  // zero, unless |y| was already zero on input. Fix this by combining the
+  // values.
+  assert(BN_is_zero(u) || BN_is_zero(v));
+  for (size_t i = 0; i < width; i++) {
+    v->d[i] |= u->d[i];
+  }
+
+  *out_shift = shift;
+  ret = bn_set_words(r, v->d, width);
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_gcd(BIGNUM *r, const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx) {
+  unsigned shift;
+  return bn_gcd_consttime(r, &shift, x, y, ctx) &&
+         BN_lshift(r, r, shift);
+}
+
+int bn_is_relatively_prime(int *out_relatively_prime, const BIGNUM *x,
+                           const BIGNUM *y, BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX_start(ctx);
+  unsigned shift;
+  BIGNUM *gcd = BN_CTX_get(ctx);
+  if (gcd == NULL ||
+      !bn_gcd_consttime(gcd, &shift, x, y, ctx)) {
+    goto err;
+  }
+
+  // Check that 2^|shift| * |gcd| is one.
+  if (gcd->width == 0) {
+    *out_relatively_prime = 0;
+  } else {
+    BN_ULONG mask = shift | (gcd->d[0] ^ 1);
+    for (int i = 1; i < gcd->width; i++) {
+      mask |= gcd->d[i];
+    }
+    *out_relatively_prime = mask == 0;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int bn_lcm_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  unsigned shift;
+  BIGNUM *gcd = BN_CTX_get(ctx);
+  int ret = gcd != NULL &&
+            bn_mul_consttime(r, a, b, ctx) &&
+            bn_gcd_consttime(gcd, &shift, a, b, ctx) &&
+            bn_div_consttime(r, NULL, r, gcd, ctx) &&
+            bn_rshift_secret_shift(r, r, shift, ctx);
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int bn_mod_inverse_consttime(BIGNUM *r, int *out_no_inverse, const BIGNUM *a,
+                             const BIGNUM *n, BN_CTX *ctx) {
+  *out_no_inverse = 0;
+  if (BN_is_negative(a) || BN_ucmp(a, n) >= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INPUT_NOT_REDUCED);
+    return 0;
+  }
+  if (BN_is_zero(a)) {
+    if (BN_is_one(n)) {
+      BN_zero(r);
+      return 1;
+    }
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    return 0;
+  }
+
+  // This is a constant-time implementation of the extended binary GCD
+  // algorithm. It is adapted from the Handbook of Applied Cryptography, section
+  // 14.4.3, algorithm 14.51, and modified to bound coefficients and avoid
+  // negative numbers.
+  //
+  // For more details and proof of correctness, see
+  // https://github.com/mit-plv/fiat-crypto/pull/333. In particular, see |step|
+  // and |mod_inverse_consttime| for the algorithm in Gallina and see
+  // |mod_inverse_consttime_spec| for the correctness result.
+
+  if (!BN_is_odd(a) && !BN_is_odd(n)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    return 0;
+  }
+
+  // This function exists to compute the RSA private exponent, where |a| is one
+  // word. We'll thus use |a_width| when available.
+  size_t n_width = n->width, a_width = a->width;
+  if (a_width > n_width) {
+    a_width = n_width;
+  }
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *u = BN_CTX_get(ctx);
+  BIGNUM *v = BN_CTX_get(ctx);
+  BIGNUM *A = BN_CTX_get(ctx);
+  BIGNUM *B = BN_CTX_get(ctx);
+  BIGNUM *C = BN_CTX_get(ctx);
+  BIGNUM *D = BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  BIGNUM *tmp2 = BN_CTX_get(ctx);
+  if (u == NULL || v == NULL || A == NULL || B == NULL || C == NULL ||
+      D == NULL || tmp == NULL || tmp2 == NULL ||
+      !BN_copy(u, a) ||
+      !BN_copy(v, n) ||
+      !BN_one(A) ||
+      !BN_one(D) ||
+      // For convenience, size |u| and |v| equivalently.
+      !bn_resize_words(u, n_width) ||
+      !bn_resize_words(v, n_width) ||
+      // |A| and |C| are bounded by |m|.
+      !bn_resize_words(A, n_width) ||
+      !bn_resize_words(C, n_width) ||
+      // |B| and |D| are bounded by |a|.
+      !bn_resize_words(B, a_width) ||
+      !bn_resize_words(D, a_width) ||
+      // |tmp| and |tmp2| may be used at either size.
+      !bn_resize_words(tmp, n_width) ||
+      !bn_resize_words(tmp2, n_width)) {
+    goto err;
+  }
+
+  // Each loop iteration halves at least one of |u| and |v|. Thus we need at
+  // most the combined bit width of inputs for at least one value to be zero.
+  unsigned a_bits = a_width * BN_BITS2, n_bits = n_width * BN_BITS2;
+  unsigned num_iters = a_bits + n_bits;
+  if (num_iters < a_bits) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    goto err;
+  }
+
+  // Before and after each loop iteration, the following hold:
+  //
+  //   u = A*a - B*n
+  //   v = D*n - C*a
+  //   0 < u <= a
+  //   0 <= v <= n
+  //   0 <= A < n
+  //   0 <= B <= a
+  //   0 <= C < n
+  //   0 <= D <= a
+  //
+  // After each loop iteration, u and v only get smaller, and at least one of
+  // them shrinks by at least a factor of two.
+  for (unsigned i = 0; i < num_iters; i++) {
+    BN_ULONG both_odd = word_is_odd_mask(u->d[0]) & word_is_odd_mask(v->d[0]);
+
+    // If both |u| and |v| are odd, subtract the smaller from the larger.
+    BN_ULONG v_less_than_u =
+        (BN_ULONG)0 - bn_sub_words(tmp->d, v->d, u->d, n_width);
+    bn_select_words(v->d, both_odd & ~v_less_than_u, tmp->d, v->d, n_width);
+    bn_sub_words(tmp->d, u->d, v->d, n_width);
+    bn_select_words(u->d, both_odd & v_less_than_u, tmp->d, u->d, n_width);
+
+    // If we updated one of the values, update the corresponding coefficient.
+    BN_ULONG carry = bn_add_words(tmp->d, A->d, C->d, n_width);
+    carry -= bn_sub_words(tmp2->d, tmp->d, n->d, n_width);
+    bn_select_words(tmp->d, carry, tmp->d, tmp2->d, n_width);
+    bn_select_words(A->d, both_odd & v_less_than_u, tmp->d, A->d, n_width);
+    bn_select_words(C->d, both_odd & ~v_less_than_u, tmp->d, C->d, n_width);
+
+    bn_add_words(tmp->d, B->d, D->d, a_width);
+    bn_sub_words(tmp2->d, tmp->d, a->d, a_width);
+    bn_select_words(tmp->d, carry, tmp->d, tmp2->d, a_width);
+    bn_select_words(B->d, both_odd & v_less_than_u, tmp->d, B->d, a_width);
+    bn_select_words(D->d, both_odd & ~v_less_than_u, tmp->d, D->d, a_width);
+
+    // Our loop invariants hold at this point. Additionally, exactly one of |u|
+    // and |v| is now even.
+    BN_ULONG u_is_even = ~word_is_odd_mask(u->d[0]);
+    BN_ULONG v_is_even = ~word_is_odd_mask(v->d[0]);
+    assert(u_is_even != v_is_even);
+
+    // Halve the even one and adjust the corresponding coefficient.
+    maybe_rshift1_words(u->d, u_is_even, tmp->d, n_width);
+    BN_ULONG A_or_B_is_odd =
+        word_is_odd_mask(A->d[0]) | word_is_odd_mask(B->d[0]);
+    BN_ULONG A_carry =
+        maybe_add_words(A->d, A_or_B_is_odd & u_is_even, n->d, tmp->d, n_width);
+    BN_ULONG B_carry =
+        maybe_add_words(B->d, A_or_B_is_odd & u_is_even, a->d, tmp->d, a_width);
+    maybe_rshift1_words_carry(A->d, A_carry, u_is_even, tmp->d, n_width);
+    maybe_rshift1_words_carry(B->d, B_carry, u_is_even, tmp->d, a_width);
+
+    maybe_rshift1_words(v->d, v_is_even, tmp->d, n_width);
+    BN_ULONG C_or_D_is_odd =
+        word_is_odd_mask(C->d[0]) | word_is_odd_mask(D->d[0]);
+    BN_ULONG C_carry =
+        maybe_add_words(C->d, C_or_D_is_odd & v_is_even, n->d, tmp->d, n_width);
+    BN_ULONG D_carry =
+        maybe_add_words(D->d, C_or_D_is_odd & v_is_even, a->d, tmp->d, a_width);
+    maybe_rshift1_words_carry(C->d, C_carry, v_is_even, tmp->d, n_width);
+    maybe_rshift1_words_carry(D->d, D_carry, v_is_even, tmp->d, a_width);
+  }
+
+  assert(BN_is_zero(v));
+  if (!BN_is_one(u)) {
+    *out_no_inverse = 1;
+    OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+    goto err;
+  }
+
+  ret = BN_copy(r, A) != NULL;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c
new file mode 100644
index 0000000..7d0d0ef
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c	
@@ -0,0 +1,711 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+// This file has two other implementations: x86 assembly language in
+// asm/bn-586.pl and x86_64 inline assembly in asm/x86_64-gcc.c.
+#if defined(OPENSSL_NO_ASM) || \
+    !(defined(OPENSSL_X86) ||  \
+      (defined(OPENSSL_X86_64) && (defined(__GNUC__) || defined(__clang__))))
+
+#ifdef BN_ULLONG
+#define mul_add(r, a, w, c)               \
+  do {                                    \
+    BN_ULLONG t;                          \
+    t = (BN_ULLONG)(w) * (a) + (r) + (c); \
+    (r) = Lw(t);                          \
+    (c) = Hw(t);                          \
+  } while (0)
+
+#define mul(r, a, w, c)             \
+  do {                              \
+    BN_ULLONG t;                    \
+    t = (BN_ULLONG)(w) * (a) + (c); \
+    (r) = Lw(t);                    \
+    (c) = Hw(t);                    \
+  } while (0)
+
+#define sqr(r0, r1, a)        \
+  do {                        \
+    BN_ULLONG t;              \
+    t = (BN_ULLONG)(a) * (a); \
+    (r0) = Lw(t);             \
+    (r1) = Hw(t);             \
+  } while (0)
+
+#else
+
+#define mul_add(r, a, w, c)             \
+  do {                                  \
+    BN_ULONG high, low, ret, tmp = (a); \
+    ret = (r);                          \
+    BN_UMULT_LOHI(low, high, w, tmp);   \
+    ret += (c);                         \
+    (c) = (ret < (c)) ? 1 : 0;          \
+    (c) += high;                        \
+    ret += low;                         \
+    (c) += (ret < low) ? 1 : 0;         \
+    (r) = ret;                          \
+  } while (0)
+
+#define mul(r, a, w, c)                \
+  do {                                 \
+    BN_ULONG high, low, ret, ta = (a); \
+    BN_UMULT_LOHI(low, high, w, ta);   \
+    ret = low + (c);                   \
+    (c) = high;                        \
+    (c) += (ret < low) ? 1 : 0;        \
+    (r) = ret;                         \
+  } while (0)
+
+#define sqr(r0, r1, a)               \
+  do {                               \
+    BN_ULONG tmp = (a);              \
+    BN_UMULT_LOHI(r0, r1, tmp, tmp); \
+  } while (0)
+
+#endif  // !BN_ULLONG
+
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul_add(rp[0], ap[0], w, c1);
+    mul_add(rp[1], ap[1], w, c1);
+    mul_add(rp[2], ap[2], w, c1);
+    mul_add(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+
+  while (num) {
+    mul_add(rp[0], ap[0], w, c1);
+    ap++;
+    rp++;
+    num--;
+  }
+
+  return c1;
+}
+
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                      BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul(rp[0], ap[0], w, c1);
+    mul(rp[1], ap[1], w, c1);
+    mul(rp[2], ap[2], w, c1);
+    mul(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  while (num) {
+    mul(rp[0], ap[0], w, c1);
+    ap++;
+    rp++;
+    num--;
+  }
+  return c1;
+}
+
+void bn_sqr_words(BN_ULONG *r, const BN_ULONG *a, size_t n) {
+  if (n == 0) {
+    return;
+  }
+
+  while (n & ~3) {
+    sqr(r[0], r[1], a[0]);
+    sqr(r[2], r[3], a[1]);
+    sqr(r[4], r[5], a[2]);
+    sqr(r[6], r[7], a[3]);
+    a += 4;
+    r += 8;
+    n -= 4;
+  }
+  while (n) {
+    sqr(r[0], r[1], a[0]);
+    a++;
+    r += 2;
+    n--;
+  }
+}
+
+#ifdef BN_ULLONG
+BN_ULONG bn_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULLONG ll = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  while (n & ~3) {
+    ll += (BN_ULLONG)a[0] + b[0];
+    r[0] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[1] + b[1];
+    r[1] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[2] + b[2];
+    r[2] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[3] + b[3];
+    r[3] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    ll += (BN_ULLONG)a[0] + b[0];
+    r[0] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return (BN_ULONG)ll;
+}
+
+#else  // !BN_ULLONG
+
+BN_ULONG bn_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULONG c, l, t;
+
+  if (n == 0) {
+    return (BN_ULONG)0;
+  }
+
+  c = 0;
+  while (n & ~3) {
+    t = a[0];
+    t += c;
+    c = (t < c);
+    l = t + b[0];
+    c += (l < t);
+    r[0] = l;
+    t = a[1];
+    t += c;
+    c = (t < c);
+    l = t + b[1];
+    c += (l < t);
+    r[1] = l;
+    t = a[2];
+    t += c;
+    c = (t < c);
+    l = t + b[2];
+    c += (l < t);
+    r[2] = l;
+    t = a[3];
+    t += c;
+    c = (t < c);
+    l = t + b[3];
+    c += (l < t);
+    r[3] = l;
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    t = a[0];
+    t += c;
+    c = (t < c);
+    l = t + b[0];
+    c += (l < t);
+    r[0] = l;
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return (BN_ULONG)c;
+}
+
+#endif  // !BN_ULLONG
+
+BN_ULONG bn_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULONG t1, t2;
+  int c = 0;
+
+  if (n == 0) {
+    return (BN_ULONG)0;
+  }
+
+  while (n & ~3) {
+    t1 = a[0];
+    t2 = b[0];
+    r[0] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[1];
+    t2 = b[1];
+    r[1] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[2];
+    t2 = b[2];
+    r[2] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[3];
+    t2 = b[3];
+    r[3] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    t1 = a[0];
+    t2 = b[0];
+    r[0] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return c;
+}
+
+// mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0)
+// mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0)
+// sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0)
+// sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0)
+
+#ifdef BN_ULLONG
+
+// Keep in mind that additions to multiplication result can not overflow,
+// because its high half cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2)     \
+  do {                                  \
+    BN_ULONG hi;                        \
+    BN_ULLONG t = (BN_ULLONG)(a) * (b); \
+    t += (c0); /* no carry */           \
+    (c0) = (BN_ULONG)Lw(t);             \
+    hi = (BN_ULONG)Hw(t);               \
+    (c1) += (hi);                       \
+    if ((c1) < hi) {                    \
+      (c2)++;                           \
+    }                                   \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2)        \
+  do {                                      \
+    BN_ULONG hi;                            \
+    BN_ULLONG t = (BN_ULLONG)(a) * (b);     \
+    BN_ULLONG tt = t + (c0); /* no carry */ \
+    (c0) = (BN_ULONG)Lw(tt);                \
+    hi = (BN_ULONG)Hw(tt);                  \
+    (c1) += hi;                             \
+    if ((c1) < hi) {                        \
+      (c2)++;                               \
+    }                                       \
+    t += (c0); /* no carry */               \
+    (c0) = (BN_ULONG)Lw(t);                 \
+    hi = (BN_ULONG)Hw(t);                   \
+    (c1) += hi;                             \
+    if ((c1) < hi) {                        \
+      (c2)++;                               \
+    }                                       \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2)           \
+  do {                                        \
+    BN_ULONG hi;                              \
+    BN_ULLONG t = (BN_ULLONG)(a)[i] * (a)[i]; \
+    t += (c0); /* no carry */                 \
+    (c0) = (BN_ULONG)Lw(t);                   \
+    hi = (BN_ULONG)Hw(t);                     \
+    (c1) += hi;                               \
+    if ((c1) < hi) {                          \
+      (c2)++;                                 \
+    }                                         \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+#else
+
+// Keep in mind that additions to hi can not overflow, because the high word of
+// a multiplication result cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2) \
+  do {                              \
+    BN_ULONG ta = (a), tb = (b);    \
+    BN_ULONG lo, hi;                \
+    BN_UMULT_LOHI(lo, hi, ta, tb);  \
+    (c0) += lo;                     \
+    hi += ((c0) < lo) ? 1 : 0;      \
+    (c1) += hi;                     \
+    (c2) += ((c1) < hi) ? 1 : 0;    \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2) \
+  do {                               \
+    BN_ULONG ta = (a), tb = (b);     \
+    BN_ULONG lo, hi, tt;             \
+    BN_UMULT_LOHI(lo, hi, ta, tb);   \
+    (c0) += lo;                      \
+    tt = hi + (((c0) < lo) ? 1 : 0); \
+    (c1) += tt;                      \
+    (c2) += ((c1) < tt) ? 1 : 0;     \
+    (c0) += lo;                      \
+    hi += (c0 < lo) ? 1 : 0;         \
+    (c1) += hi;                      \
+    (c2) += ((c1) < hi) ? 1 : 0;     \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2) \
+  do {                              \
+    BN_ULONG ta = (a)[i];           \
+    BN_ULONG lo, hi;                \
+    BN_UMULT_LOHI(lo, hi, ta, ta);  \
+    (c0) += lo;                     \
+    hi += (c0 < lo) ? 1 : 0;        \
+    (c1) += hi;                     \
+    (c2) += ((c1) < hi) ? 1 : 0;    \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+#endif  // !BN_ULLONG
+
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[4], b[0], c2, c3, c1);
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  mul_add_c(a[0], b[4], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[0], b[5], c3, c1, c2);
+  mul_add_c(a[1], b[4], c3, c1, c2);
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  mul_add_c(a[4], b[1], c3, c1, c2);
+  mul_add_c(a[5], b[0], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[6], b[0], c1, c2, c3);
+  mul_add_c(a[5], b[1], c1, c2, c3);
+  mul_add_c(a[4], b[2], c1, c2, c3);
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  mul_add_c(a[2], b[4], c1, c2, c3);
+  mul_add_c(a[1], b[5], c1, c2, c3);
+  mul_add_c(a[0], b[6], c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[7], c2, c3, c1);
+  mul_add_c(a[1], b[6], c2, c3, c1);
+  mul_add_c(a[2], b[5], c2, c3, c1);
+  mul_add_c(a[3], b[4], c2, c3, c1);
+  mul_add_c(a[4], b[3], c2, c3, c1);
+  mul_add_c(a[5], b[2], c2, c3, c1);
+  mul_add_c(a[6], b[1], c2, c3, c1);
+  mul_add_c(a[7], b[0], c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[1], c3, c1, c2);
+  mul_add_c(a[6], b[2], c3, c1, c2);
+  mul_add_c(a[5], b[3], c3, c1, c2);
+  mul_add_c(a[4], b[4], c3, c1, c2);
+  mul_add_c(a[3], b[5], c3, c1, c2);
+  mul_add_c(a[2], b[6], c3, c1, c2);
+  mul_add_c(a[1], b[7], c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  mul_add_c(a[2], b[7], c1, c2, c3);
+  mul_add_c(a[3], b[6], c1, c2, c3);
+  mul_add_c(a[4], b[5], c1, c2, c3);
+  mul_add_c(a[5], b[4], c1, c2, c3);
+  mul_add_c(a[6], b[3], c1, c2, c3);
+  mul_add_c(a[7], b[2], c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  mul_add_c(a[7], b[3], c2, c3, c1);
+  mul_add_c(a[6], b[4], c2, c3, c1);
+  mul_add_c(a[5], b[5], c2, c3, c1);
+  mul_add_c(a[4], b[6], c2, c3, c1);
+  mul_add_c(a[3], b[7], c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  mul_add_c(a[4], b[7], c3, c1, c2);
+  mul_add_c(a[5], b[6], c3, c1, c2);
+  mul_add_c(a[6], b[5], c3, c1, c2);
+  mul_add_c(a[7], b[4], c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  mul_add_c(a[7], b[5], c1, c2, c3);
+  mul_add_c(a[6], b[6], c1, c2, c3);
+  mul_add_c(a[5], b[7], c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  mul_add_c(a[6], b[7], c2, c3, c1);
+  mul_add_c(a[7], b[6], c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[7], c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  sqr_add_c2(a, 4, 0, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 5, 0, c3, c1, c2);
+  sqr_add_c2(a, 4, 1, c3, c1, c2);
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  sqr_add_c2(a, 4, 2, c1, c2, c3);
+  sqr_add_c2(a, 5, 1, c1, c2, c3);
+  sqr_add_c2(a, 6, 0, c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 0, c2, c3, c1);
+  sqr_add_c2(a, 6, 1, c2, c3, c1);
+  sqr_add_c2(a, 5, 2, c2, c3, c1);
+  sqr_add_c2(a, 4, 3, c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  sqr_add_c(a, 4, c3, c1, c2);
+  sqr_add_c2(a, 5, 3, c3, c1, c2);
+  sqr_add_c2(a, 6, 2, c3, c1, c2);
+  sqr_add_c2(a, 7, 1, c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 7, 2, c1, c2, c3);
+  sqr_add_c2(a, 6, 3, c1, c2, c3);
+  sqr_add_c2(a, 5, 4, c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  sqr_add_c(a, 5, c2, c3, c1);
+  sqr_add_c2(a, 6, 4, c2, c3, c1);
+  sqr_add_c2(a, 7, 3, c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 7, 4, c3, c1, c2);
+  sqr_add_c2(a, 6, 5, c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  sqr_add_c(a, 6, c1, c2, c3);
+  sqr_add_c2(a, 7, 5, c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 6, c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  sqr_add_c(a, 7, c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+#undef mul_add
+#undef mul
+#undef sqr
+#undef mul_add_c
+#undef mul_add_c2
+#undef sqr_add_c
+#undef sqr_add_c2
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c.grpc_back
new file mode 100644
index 0000000..ee80a3c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/generic.c.grpc_back	
@@ -0,0 +1,711 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+// This file has two other implementations: x86 assembly language in
+// asm/bn-586.pl and x86_64 inline assembly in asm/x86_64-gcc.c.
+#if defined(OPENSSL_NO_ASM) || \
+    !(defined(OPENSSL_X86) ||  \
+      (defined(OPENSSL_X86_64) && (defined(__GNUC__) || defined(__clang__))))
+
+#ifdef BN_ULLONG
+#define mul_add(r, a, w, c)               \
+  do {                                    \
+    BN_ULLONG t;                          \
+    t = (BN_ULLONG)(w) * (a) + (r) + (c); \
+    (r) = Lw(t);                          \
+    (c) = Hw(t);                          \
+  } while (0)
+
+#define mul(r, a, w, c)             \
+  do {                              \
+    BN_ULLONG t;                    \
+    t = (BN_ULLONG)(w) * (a) + (c); \
+    (r) = Lw(t);                    \
+    (c) = Hw(t);                    \
+  } while (0)
+
+#define sqr(r0, r1, a)        \
+  do {                        \
+    BN_ULLONG t;              \
+    t = (BN_ULLONG)(a) * (a); \
+    (r0) = Lw(t);             \
+    (r1) = Hw(t);             \
+  } while (0)
+
+#else
+
+#define mul_add(r, a, w, c)             \
+  do {                                  \
+    BN_ULONG high, low, ret, tmp = (a); \
+    ret = (r);                          \
+    BN_UMULT_LOHI(low, high, w, tmp);   \
+    ret += (c);                         \
+    (c) = (ret < (c)) ? 1 : 0;          \
+    (c) += high;                        \
+    ret += low;                         \
+    (c) += (ret < low) ? 1 : 0;         \
+    (r) = ret;                          \
+  } while (0)
+
+#define mul(r, a, w, c)                \
+  do {                                 \
+    BN_ULONG high, low, ret, ta = (a); \
+    BN_UMULT_LOHI(low, high, w, ta);   \
+    ret = low + (c);                   \
+    (c) = high;                        \
+    (c) += (ret < low) ? 1 : 0;        \
+    (r) = ret;                         \
+  } while (0)
+
+#define sqr(r0, r1, a)               \
+  do {                               \
+    BN_ULONG tmp = (a);              \
+    BN_UMULT_LOHI(r0, r1, tmp, tmp); \
+  } while (0)
+
+#endif  // !BN_ULLONG
+
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul_add(rp[0], ap[0], w, c1);
+    mul_add(rp[1], ap[1], w, c1);
+    mul_add(rp[2], ap[2], w, c1);
+    mul_add(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+
+  while (num) {
+    mul_add(rp[0], ap[0], w, c1);
+    ap++;
+    rp++;
+    num--;
+  }
+
+  return c1;
+}
+
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                      BN_ULONG w) {
+  BN_ULONG c1 = 0;
+
+  if (num == 0) {
+    return c1;
+  }
+
+  while (num & ~3) {
+    mul(rp[0], ap[0], w, c1);
+    mul(rp[1], ap[1], w, c1);
+    mul(rp[2], ap[2], w, c1);
+    mul(rp[3], ap[3], w, c1);
+    ap += 4;
+    rp += 4;
+    num -= 4;
+  }
+  while (num) {
+    mul(rp[0], ap[0], w, c1);
+    ap++;
+    rp++;
+    num--;
+  }
+  return c1;
+}
+
+void bn_sqr_words(BN_ULONG *r, const BN_ULONG *a, size_t n) {
+  if (n == 0) {
+    return;
+  }
+
+  while (n & ~3) {
+    sqr(r[0], r[1], a[0]);
+    sqr(r[2], r[3], a[1]);
+    sqr(r[4], r[5], a[2]);
+    sqr(r[6], r[7], a[3]);
+    a += 4;
+    r += 8;
+    n -= 4;
+  }
+  while (n) {
+    sqr(r[0], r[1], a[0]);
+    a++;
+    r += 2;
+    n--;
+  }
+}
+
+#ifdef BN_ULLONG
+BN_ULONG bn_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULLONG ll = 0;
+
+  if (n == 0) {
+    return 0;
+  }
+
+  while (n & ~3) {
+    ll += (BN_ULLONG)a[0] + b[0];
+    r[0] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[1] + b[1];
+    r[1] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[2] + b[2];
+    r[2] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    ll += (BN_ULLONG)a[3] + b[3];
+    r[3] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    ll += (BN_ULLONG)a[0] + b[0];
+    r[0] = (BN_ULONG)ll;
+    ll >>= BN_BITS2;
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return (BN_ULONG)ll;
+}
+
+#else  // !BN_ULLONG
+
+BN_ULONG bn_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULONG c, l, t;
+
+  if (n == 0) {
+    return (BN_ULONG)0;
+  }
+
+  c = 0;
+  while (n & ~3) {
+    t = a[0];
+    t += c;
+    c = (t < c);
+    l = t + b[0];
+    c += (l < t);
+    r[0] = l;
+    t = a[1];
+    t += c;
+    c = (t < c);
+    l = t + b[1];
+    c += (l < t);
+    r[1] = l;
+    t = a[2];
+    t += c;
+    c = (t < c);
+    l = t + b[2];
+    c += (l < t);
+    r[2] = l;
+    t = a[3];
+    t += c;
+    c = (t < c);
+    l = t + b[3];
+    c += (l < t);
+    r[3] = l;
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    t = a[0];
+    t += c;
+    c = (t < c);
+    l = t + b[0];
+    c += (l < t);
+    r[0] = l;
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return (BN_ULONG)c;
+}
+
+#endif  // !BN_ULLONG
+
+BN_ULONG bn_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      size_t n) {
+  BN_ULONG t1, t2;
+  int c = 0;
+
+  if (n == 0) {
+    return (BN_ULONG)0;
+  }
+
+  while (n & ~3) {
+    t1 = a[0];
+    t2 = b[0];
+    r[0] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[1];
+    t2 = b[1];
+    r[1] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[2];
+    t2 = b[2];
+    r[2] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    t1 = a[3];
+    t2 = b[3];
+    r[3] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    a += 4;
+    b += 4;
+    r += 4;
+    n -= 4;
+  }
+  while (n) {
+    t1 = a[0];
+    t2 = b[0];
+    r[0] = t1 - t2 - c;
+    if (t1 != t2) {
+      c = (t1 < t2);
+    }
+    a++;
+    b++;
+    r++;
+    n--;
+  }
+  return c;
+}
+
+// mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0)
+// mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0)
+// sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0)
+// sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0)
+
+#ifdef BN_ULLONG
+
+// Keep in mind that additions to multiplication result can not overflow,
+// because its high half cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2)     \
+  do {                                  \
+    BN_ULONG hi;                        \
+    BN_ULLONG t = (BN_ULLONG)(a) * (b); \
+    t += (c0); /* no carry */           \
+    (c0) = (BN_ULONG)Lw(t);             \
+    hi = (BN_ULONG)Hw(t);               \
+    (c1) += (hi);                       \
+    if ((c1) < hi) {                    \
+      (c2)++;                           \
+    }                                   \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2)        \
+  do {                                      \
+    BN_ULONG hi;                            \
+    BN_ULLONG t = (BN_ULLONG)(a) * (b);     \
+    BN_ULLONG tt = t + (c0); /* no carry */ \
+    (c0) = (BN_ULONG)Lw(tt);                \
+    hi = (BN_ULONG)Hw(tt);                  \
+    (c1) += hi;                             \
+    if ((c1) < hi) {                        \
+      (c2)++;                               \
+    }                                       \
+    t += (c0); /* no carry */               \
+    (c0) = (BN_ULONG)Lw(t);                 \
+    hi = (BN_ULONG)Hw(t);                   \
+    (c1) += hi;                             \
+    if ((c1) < hi) {                        \
+      (c2)++;                               \
+    }                                       \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2)           \
+  do {                                        \
+    BN_ULONG hi;                              \
+    BN_ULLONG t = (BN_ULLONG)(a)[i] * (a)[i]; \
+    t += (c0); /* no carry */                 \
+    (c0) = (BN_ULONG)Lw(t);                   \
+    hi = (BN_ULONG)Hw(t);                     \
+    (c1) += hi;                               \
+    if ((c1) < hi) {                          \
+      (c2)++;                                 \
+    }                                         \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+#else
+
+// Keep in mind that additions to hi can not overflow, because the high word of
+// a multiplication result cannot be all-ones.
+#define mul_add_c(a, b, c0, c1, c2) \
+  do {                              \
+    BN_ULONG ta = (a), tb = (b);    \
+    BN_ULONG lo, hi;                \
+    BN_UMULT_LOHI(lo, hi, ta, tb);  \
+    (c0) += lo;                     \
+    hi += ((c0) < lo) ? 1 : 0;      \
+    (c1) += hi;                     \
+    (c2) += ((c1) < hi) ? 1 : 0;    \
+  } while (0)
+
+#define mul_add_c2(a, b, c0, c1, c2) \
+  do {                               \
+    BN_ULONG ta = (a), tb = (b);     \
+    BN_ULONG lo, hi, tt;             \
+    BN_UMULT_LOHI(lo, hi, ta, tb);   \
+    (c0) += lo;                      \
+    tt = hi + (((c0) < lo) ? 1 : 0); \
+    (c1) += tt;                      \
+    (c2) += ((c1) < tt) ? 1 : 0;     \
+    (c0) += lo;                      \
+    hi += (c0 < lo) ? 1 : 0;         \
+    (c1) += hi;                      \
+    (c2) += ((c1) < hi) ? 1 : 0;     \
+  } while (0)
+
+#define sqr_add_c(a, i, c0, c1, c2) \
+  do {                              \
+    BN_ULONG ta = (a)[i];           \
+    BN_ULONG lo, hi;                \
+    BN_UMULT_LOHI(lo, hi, ta, ta);  \
+    (c0) += lo;                     \
+    hi += (c0 < lo) ? 1 : 0;        \
+    (c1) += hi;                     \
+    (c2) += ((c1) < hi) ? 1 : 0;    \
+  } while (0)
+
+#define sqr_add_c2(a, i, j, c0, c1, c2) mul_add_c2((a)[i], (a)[j], c0, c1, c2)
+
+#endif  // !BN_ULLONG
+
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[4], b[0], c2, c3, c1);
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  mul_add_c(a[0], b[4], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[0], b[5], c3, c1, c2);
+  mul_add_c(a[1], b[4], c3, c1, c2);
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  mul_add_c(a[4], b[1], c3, c1, c2);
+  mul_add_c(a[5], b[0], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[6], b[0], c1, c2, c3);
+  mul_add_c(a[5], b[1], c1, c2, c3);
+  mul_add_c(a[4], b[2], c1, c2, c3);
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  mul_add_c(a[2], b[4], c1, c2, c3);
+  mul_add_c(a[1], b[5], c1, c2, c3);
+  mul_add_c(a[0], b[6], c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[7], c2, c3, c1);
+  mul_add_c(a[1], b[6], c2, c3, c1);
+  mul_add_c(a[2], b[5], c2, c3, c1);
+  mul_add_c(a[3], b[4], c2, c3, c1);
+  mul_add_c(a[4], b[3], c2, c3, c1);
+  mul_add_c(a[5], b[2], c2, c3, c1);
+  mul_add_c(a[6], b[1], c2, c3, c1);
+  mul_add_c(a[7], b[0], c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[1], c3, c1, c2);
+  mul_add_c(a[6], b[2], c3, c1, c2);
+  mul_add_c(a[5], b[3], c3, c1, c2);
+  mul_add_c(a[4], b[4], c3, c1, c2);
+  mul_add_c(a[3], b[5], c3, c1, c2);
+  mul_add_c(a[2], b[6], c3, c1, c2);
+  mul_add_c(a[1], b[7], c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  mul_add_c(a[2], b[7], c1, c2, c3);
+  mul_add_c(a[3], b[6], c1, c2, c3);
+  mul_add_c(a[4], b[5], c1, c2, c3);
+  mul_add_c(a[5], b[4], c1, c2, c3);
+  mul_add_c(a[6], b[3], c1, c2, c3);
+  mul_add_c(a[7], b[2], c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  mul_add_c(a[7], b[3], c2, c3, c1);
+  mul_add_c(a[6], b[4], c2, c3, c1);
+  mul_add_c(a[5], b[5], c2, c3, c1);
+  mul_add_c(a[4], b[6], c2, c3, c1);
+  mul_add_c(a[3], b[7], c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  mul_add_c(a[4], b[7], c3, c1, c2);
+  mul_add_c(a[5], b[6], c3, c1, c2);
+  mul_add_c(a[6], b[5], c3, c1, c2);
+  mul_add_c(a[7], b[4], c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  mul_add_c(a[7], b[5], c1, c2, c3);
+  mul_add_c(a[6], b[6], c1, c2, c3);
+  mul_add_c(a[5], b[7], c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  mul_add_c(a[6], b[7], c2, c3, c1);
+  mul_add_c(a[7], b[6], c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  mul_add_c(a[7], b[7], c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  mul_add_c(a[0], b[0], c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  mul_add_c(a[0], b[1], c2, c3, c1);
+  mul_add_c(a[1], b[0], c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[0], c3, c1, c2);
+  mul_add_c(a[1], b[1], c3, c1, c2);
+  mul_add_c(a[0], b[2], c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  mul_add_c(a[0], b[3], c1, c2, c3);
+  mul_add_c(a[1], b[2], c1, c2, c3);
+  mul_add_c(a[2], b[1], c1, c2, c3);
+  mul_add_c(a[3], b[0], c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  mul_add_c(a[3], b[1], c2, c3, c1);
+  mul_add_c(a[2], b[2], c2, c3, c1);
+  mul_add_c(a[1], b[3], c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  mul_add_c(a[2], b[3], c3, c1, c2);
+  mul_add_c(a[3], b[2], c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  mul_add_c(a[3], b[3], c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[8]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  sqr_add_c2(a, 4, 0, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 5, 0, c3, c1, c2);
+  sqr_add_c2(a, 4, 1, c3, c1, c2);
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  sqr_add_c2(a, 4, 2, c1, c2, c3);
+  sqr_add_c2(a, 5, 1, c1, c2, c3);
+  sqr_add_c2(a, 6, 0, c1, c2, c3);
+  r[6] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 0, c2, c3, c1);
+  sqr_add_c2(a, 6, 1, c2, c3, c1);
+  sqr_add_c2(a, 5, 2, c2, c3, c1);
+  sqr_add_c2(a, 4, 3, c2, c3, c1);
+  r[7] = c2;
+  c2 = 0;
+  sqr_add_c(a, 4, c3, c1, c2);
+  sqr_add_c2(a, 5, 3, c3, c1, c2);
+  sqr_add_c2(a, 6, 2, c3, c1, c2);
+  sqr_add_c2(a, 7, 1, c3, c1, c2);
+  r[8] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 7, 2, c1, c2, c3);
+  sqr_add_c2(a, 6, 3, c1, c2, c3);
+  sqr_add_c2(a, 5, 4, c1, c2, c3);
+  r[9] = c1;
+  c1 = 0;
+  sqr_add_c(a, 5, c2, c3, c1);
+  sqr_add_c2(a, 6, 4, c2, c3, c1);
+  sqr_add_c2(a, 7, 3, c2, c3, c1);
+  r[10] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 7, 4, c3, c1, c2);
+  sqr_add_c2(a, 6, 5, c3, c1, c2);
+  r[11] = c3;
+  c3 = 0;
+  sqr_add_c(a, 6, c1, c2, c3);
+  sqr_add_c2(a, 7, 5, c1, c2, c3);
+  r[12] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 7, 6, c2, c3, c1);
+  r[13] = c2;
+  c2 = 0;
+  sqr_add_c(a, 7, c3, c1, c2);
+  r[14] = c3;
+  r[15] = c1;
+}
+
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]) {
+  BN_ULONG c1, c2, c3;
+
+  c1 = 0;
+  c2 = 0;
+  c3 = 0;
+  sqr_add_c(a, 0, c1, c2, c3);
+  r[0] = c1;
+  c1 = 0;
+  sqr_add_c2(a, 1, 0, c2, c3, c1);
+  r[1] = c2;
+  c2 = 0;
+  sqr_add_c(a, 1, c3, c1, c2);
+  sqr_add_c2(a, 2, 0, c3, c1, c2);
+  r[2] = c3;
+  c3 = 0;
+  sqr_add_c2(a, 3, 0, c1, c2, c3);
+  sqr_add_c2(a, 2, 1, c1, c2, c3);
+  r[3] = c1;
+  c1 = 0;
+  sqr_add_c(a, 2, c2, c3, c1);
+  sqr_add_c2(a, 3, 1, c2, c3, c1);
+  r[4] = c2;
+  c2 = 0;
+  sqr_add_c2(a, 3, 2, c3, c1, c2);
+  r[5] = c3;
+  c3 = 0;
+  sqr_add_c(a, 3, c1, c2, c3);
+  r[6] = c1;
+  r[7] = c2;
+}
+
+#undef mul_add
+#undef mul
+#undef sqr
+#undef mul_add_c
+#undef mul_add_c2
+#undef sqr_add_c
+#undef sqr_add_c2
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h
new file mode 100644
index 0000000..547415a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h	
@@ -0,0 +1,691 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_BN_INTERNAL_H
+#define OPENSSL_HEADER_BN_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(OPENSSL_X86_64) && defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <intrin.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#pragma intrinsic(__umulh, _umul128)
+#endif
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(OPENSSL_64_BIT)
+
+#if defined(BORINGSSL_HAS_UINT128)
+// MSVC doesn't support two-word integers on 64-bit.
+#define BN_ULLONG uint128_t
+#if defined(BORINGSSL_CAN_DIVIDE_UINT128)
+#define BN_CAN_DIVIDE_ULLONG
+#endif
+#endif
+
+#define BN_BITS2 64
+#define BN_BYTES 8
+#define BN_BITS4 32
+#define BN_MASK2 (0xffffffffffffffffUL)
+#define BN_MASK2l (0xffffffffUL)
+#define BN_MASK2h (0xffffffff00000000UL)
+#define BN_MASK2h1 (0xffffffff80000000UL)
+#define BN_MONT_CTX_N0_LIMBS 1
+#define BN_DEC_CONV (10000000000000000000UL)
+#define BN_DEC_NUM 19
+#define TOBN(hi, lo) ((BN_ULONG)(hi) << 32 | (lo))
+
+#elif defined(OPENSSL_32_BIT)
+
+#define BN_ULLONG uint64_t
+#define BN_CAN_DIVIDE_ULLONG
+#define BN_BITS2 32
+#define BN_BYTES 4
+#define BN_BITS4 16
+#define BN_MASK2 (0xffffffffUL)
+#define BN_MASK2l (0xffffUL)
+#define BN_MASK2h1 (0xffff8000UL)
+#define BN_MASK2h (0xffff0000UL)
+// On some 32-bit platforms, Montgomery multiplication is done using 64-bit
+// arithmetic with SIMD instructions. On such platforms, |BN_MONT_CTX::n0|
+// needs to be two words long. Only certain 32-bit platforms actually make use
+// of n0[1] and shorter R value would suffice for the others. However,
+// currently only the assembly files know which is which.
+#define BN_MONT_CTX_N0_LIMBS 2
+#define BN_DEC_CONV (1000000000UL)
+#define BN_DEC_NUM 9
+#define TOBN(hi, lo) (lo), (hi)
+
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+#define BN_CAN_USE_INLINE_ASM
+#endif
+
+// |BN_mod_exp_mont_consttime| is based on the assumption that the L1 data
+// cache line width of the target processor is at least the following value.
+#define MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH 64
+
+// The number of |BN_ULONG|s needed for the |BN_mod_exp_mont_consttime| stack-
+// allocated storage buffer. The buffer is just the right size for the RSAZ
+// and is about ~1KB larger than what's necessary (4480 bytes) for 1024-bit
+// inputs.
+#define MOD_EXP_CTIME_STORAGE_LEN \
+  (((320u * 3u) + (32u * 9u * 16u)) / sizeof(BN_ULONG))
+
+#define STATIC_BIGNUM(x)                                    \
+  {                                                         \
+    (BN_ULONG *)(x), sizeof(x) / sizeof(BN_ULONG),          \
+        sizeof(x) / sizeof(BN_ULONG), 0, BN_FLG_STATIC_DATA \
+  }
+
+#if defined(BN_ULLONG)
+#define Lw(t) ((BN_ULONG)(t))
+#define Hw(t) ((BN_ULONG)((t) >> BN_BITS2))
+#endif
+
+// bn_minimal_width returns the minimal value of |bn->top| which fits the
+// value of |bn|.
+int bn_minimal_width(const BIGNUM *bn);
+
+// bn_set_minimal_width sets |bn->width| to |bn_minimal_width(bn)|. If |bn| is
+// zero, |bn->neg| is set to zero.
+void bn_set_minimal_width(BIGNUM *bn);
+
+// bn_wexpand ensures that |bn| has at least |words| works of space without
+// altering its value. It returns one on success or zero on allocation
+// failure.
+int bn_wexpand(BIGNUM *bn, size_t words);
+
+// bn_expand acts the same as |bn_wexpand|, but takes a number of bits rather
+// than a number of words.
+int bn_expand(BIGNUM *bn, size_t bits);
+
+// bn_resize_words adjusts |bn->top| to be |words|. It returns one on success
+// and zero on allocation error or if |bn|'s value is too large.
+OPENSSL_EXPORT int bn_resize_words(BIGNUM *bn, size_t words);
+
+// bn_select_words sets |r| to |a| if |mask| is all ones or |b| if |mask| is
+// all zeros.
+void bn_select_words(BN_ULONG *r, BN_ULONG mask, const BN_ULONG *a,
+                     const BN_ULONG *b, size_t num);
+
+// bn_set_words sets |bn| to the value encoded in the |num| words in |words|,
+// least significant word first.
+int bn_set_words(BIGNUM *bn, const BN_ULONG *words, size_t num);
+
+// bn_fits_in_words returns one if |bn| may be represented in |num| words, plus
+// a sign bit, and zero otherwise.
+int bn_fits_in_words(const BIGNUM *bn, size_t num);
+
+// bn_copy_words copies the value of |bn| to |out| and returns one if the value
+// is representable in |num| words. Otherwise, it returns zero.
+int bn_copy_words(BN_ULONG *out, size_t num, const BIGNUM *bn);
+
+// bn_mul_add_words multiples |ap| by |w|, adds the result to |rp|, and places
+// the result in |rp|. |ap| and |rp| must both be |num| words long. It returns
+// the carry word of the operation. |ap| and |rp| may be equal but otherwise may
+// not alias.
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w);
+
+// bn_mul_words multiples |ap| by |w| and places the result in |rp|. |ap| and
+// |rp| must both be |num| words long. It returns the carry word of the
+// operation. |ap| and |rp| may be equal but otherwise may not alias.
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num, BN_ULONG w);
+
+// bn_sqr_words sets |rp[2*i]| and |rp[2*i+1]| to |ap[i]|'s square, for all |i|
+// up to |num|. |ap| is an array of |num| words and |rp| an array of |2*num|
+// words. |ap| and |rp| may not alias.
+//
+// This gives the contribution of the |ap[i]*ap[i]| terms when squaring |ap|.
+void bn_sqr_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num);
+
+// bn_add_words adds |ap| to |bp| and places the result in |rp|, each of which
+// are |num| words long. It returns the carry bit, which is one if the operation
+// overflowed and zero otherwise. Any pair of |ap|, |bp|, and |rp| may be equal
+// to each other but otherwise may not alias.
+BN_ULONG bn_add_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t num);
+
+// bn_sub_words subtracts |bp| from |ap| and places the result in |rp|. It
+// returns the borrow bit, which is one if the computation underflowed and zero
+// otherwise. Any pair of |ap|, |bp|, and |rp| may be equal to each other but
+// otherwise may not alias.
+BN_ULONG bn_sub_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t num);
+
+// bn_mul_comba4 sets |r| to the product of |a| and |b|.
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]);
+
+// bn_mul_comba8 sets |r| to the product of |a| and |b|.
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]);
+
+// bn_sqr_comba8 sets |r| to |a|^2.
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[4]);
+
+// bn_sqr_comba4 sets |r| to |a|^2.
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]);
+
+// bn_less_than_words returns one if |a| < |b| and zero otherwise, where |a|
+// and |b| both are |len| words long. It runs in constant time.
+int bn_less_than_words(const BN_ULONG *a, const BN_ULONG *b, size_t len);
+
+// bn_in_range_words returns one if |min_inclusive| <= |a| < |max_exclusive|,
+// where |a| and |max_exclusive| both are |len| words long. |a| and
+// |max_exclusive| are treated as secret.
+int bn_in_range_words(const BN_ULONG *a, BN_ULONG min_inclusive,
+                      const BN_ULONG *max_exclusive, size_t len);
+
+// bn_rand_range_words sets |out| to a uniformly distributed random number from
+// |min_inclusive| to |max_exclusive|. Both |out| and |max_exclusive| are |len|
+// words long.
+//
+// This function runs in time independent of the result, but |min_inclusive| and
+// |max_exclusive| are public data. (Information about the range is unavoidably
+// leaked by how many iterations it took to select a number.)
+int bn_rand_range_words(BN_ULONG *out, BN_ULONG min_inclusive,
+                        const BN_ULONG *max_exclusive, size_t len,
+                        const uint8_t additional_data[32]);
+
+// bn_range_secret_range behaves like |BN_rand_range_ex|, but treats
+// |max_exclusive| as secret. Because of this constraint, the distribution of
+// values returned is more complex.
+//
+// Rather than repeatedly generating values until one is in range, which would
+// leak information, it generates one value. If the value is in range, it sets
+// |*out_is_uniform| to one. Otherwise, it sets |*out_is_uniform| to zero,
+// fixing up the value to force it in range.
+//
+// The subset of calls to |bn_rand_secret_range| which set |*out_is_uniform| to
+// one are uniformly distributed in the target range. Calls overall are not.
+// This function is intended for use in situations where the extra values are
+// still usable and where the number of iterations needed to reach the target
+// number of uniform outputs may be blinded for negligible probabilities of
+// timing leaks.
+//
+// Although this function treats |max_exclusive| as secret, it treats the number
+// of bits in |max_exclusive| as public.
+int bn_rand_secret_range(BIGNUM *r, int *out_is_uniform, BN_ULONG min_inclusive,
+                         const BIGNUM *max_exclusive);
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define OPENSSL_BN_ASM_MONT
+// bn_mul_mont writes |ap| * |bp| mod |np| to |rp|, each |num| words
+// long. Inputs and outputs are in Montgomery form. |n0| is a pointer to the
+// corresponding field in |BN_MONT_CTX|. It returns one if |bn_mul_mont| handles
+// inputs of this size and zero otherwise.
+//
+// TODO(davidben): The x86_64 implementation expects a 32-bit input and masks
+// off upper bits. The aarch64 implementation expects a 64-bit input and does
+// not. |size_t| is the safer option but not strictly correct for x86_64. But
+// this function implicitly already has a bound on the size of |num| because it
+// internally creates |num|-sized stack allocation.
+//
+// See also discussion in |ToWord| in abi_test.h for notes on smaller-than-word
+// inputs.
+int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                const BN_ULONG *np, const BN_ULONG *n0, size_t num);
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64)
+#define OPENSSL_BN_ASM_MONT5
+
+// bn_mul_mont_gather5 multiples loads index |power| of |table|, multiplies it
+// by |ap| modulo |np|, and stores the result in |rp|. The values are |num|
+// words long and represented in Montgomery form. |n0| is a pointer to the
+// corresponding field in |BN_MONT_CTX|.
+void bn_mul_mont_gather5(BN_ULONG *rp, const BN_ULONG *ap,
+                         const BN_ULONG *table, const BN_ULONG *np,
+                         const BN_ULONG *n0, int num, int power);
+
+// bn_scatter5 stores |inp| to index |power| of |table|. |inp| and each entry of
+// |table| are |num| words long. |power| must be less than 32. |table| must be
+// 32*|num| words long.
+void bn_scatter5(const BN_ULONG *inp, size_t num, BN_ULONG *table,
+                 size_t power);
+
+// bn_gather5 loads index |power| of |table| and stores it in |out|. |out| and
+// each entry of |table| are |num| words long. |power| must be less than 32.
+void bn_gather5(BN_ULONG *out, size_t num, BN_ULONG *table, size_t power);
+
+// bn_power5 squares |ap| five times and multiplies it by the value stored at
+// index |power| of |table|, modulo |np|. It stores the result in |rp|. The
+// values are |num| words long and represented in Montgomery form. |n0| is a
+// pointer to the corresponding field in |BN_MONT_CTX|. |num| must be divisible
+// by 8.
+void bn_power5(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *table,
+               const BN_ULONG *np, const BN_ULONG *n0, int num, int power);
+
+// bn_from_montgomery converts |ap| from Montgomery form modulo |np| and writes
+// the result in |rp|, each of which is |num| words long. It returns one on
+// success and zero if it cannot handle inputs of length |num|. |n0| is a
+// pointer to the corresponding field in |BN_MONT_CTX|.
+int bn_from_montgomery(BN_ULONG *rp, const BN_ULONG *ap,
+                       const BN_ULONG *not_used, const BN_ULONG *np,
+                       const BN_ULONG *n0, int num);
+#endif  // !OPENSSL_NO_ASM && OPENSSL_X86_64
+
+uint64_t bn_mont_n0(const BIGNUM *n);
+
+// bn_mod_exp_base_2_consttime calculates r = 2**p (mod n). |p| must be larger
+// than log_2(n); i.e. 2**p must be larger than |n|. |n| must be positive and
+// odd. |p| and the bit width of |n| are assumed public, but |n| is otherwise
+// treated as secret.
+int bn_mod_exp_base_2_consttime(BIGNUM *r, unsigned p, const BIGNUM *n,
+                                BN_CTX *ctx);
+
+#if defined(OPENSSL_X86_64) && defined(_MSC_VER)
+#define BN_UMULT_LOHI(low, high, a, b) ((low) = _umul128((a), (b), &(high)))
+#endif
+
+#if !defined(BN_ULLONG) && !defined(BN_UMULT_LOHI)
+#error "Either BN_ULLONG or BN_UMULT_LOHI must be defined on every platform."
+#endif
+
+// bn_jacobi returns the Jacobi symbol of |a| and |b| (which is -1, 0 or 1), or
+// -2 on error.
+int bn_jacobi(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+
+// bn_is_bit_set_words returns one if bit |bit| is set in |a| and zero
+// otherwise.
+int bn_is_bit_set_words(const BN_ULONG *a, size_t num, unsigned bit);
+
+// bn_one_to_montgomery sets |r| to one in Montgomery form. It returns one on
+// success and zero on error. This function treats the bit width of the modulus
+// as public.
+int bn_one_to_montgomery(BIGNUM *r, const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_less_than_montgomery_R returns one if |bn| is less than the Montgomery R
+// value for |mont| and zero otherwise.
+int bn_less_than_montgomery_R(const BIGNUM *bn, const BN_MONT_CTX *mont);
+
+// bn_mod_u16_consttime returns |bn| mod |d|, ignoring |bn|'s sign bit. It runs
+// in time independent of the value of |bn|, but it treats |d| as public.
+OPENSSL_EXPORT uint16_t bn_mod_u16_consttime(const BIGNUM *bn, uint16_t d);
+
+// bn_odd_number_is_obviously_composite returns one if |bn| is divisible by one
+// of the first several odd primes and zero otherwise.
+int bn_odd_number_is_obviously_composite(const BIGNUM *bn);
+
+// A BN_MILLER_RABIN stores state common to each Miller-Rabin iteration. It is
+// initialized within an existing |BN_CTX| scope and may not be used after
+// that scope is released with |BN_CTX_end|. Field names match those in FIPS
+// 186-4, section C.3.1.
+typedef struct {
+  // w1 is w-1.
+  BIGNUM *w1;
+  // m is (w-1)/2^a.
+  BIGNUM *m;
+  // one_mont is 1 (mod w) in Montgomery form.
+  BIGNUM *one_mont;
+  // w1_mont is w-1 (mod w) in Montgomery form.
+  BIGNUM *w1_mont;
+  // w_bits is BN_num_bits(w).
+  int w_bits;
+  // a is the largest integer such that 2^a divides w-1.
+  int a;
+} BN_MILLER_RABIN;
+
+// bn_miller_rabin_init initializes |miller_rabin| for testing if |mont->N| is
+// prime. It returns one on success and zero on error.
+OPENSSL_EXPORT int bn_miller_rabin_init(BN_MILLER_RABIN *miller_rabin,
+                                        const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_miller_rabin_iteration performs one Miller-Rabin iteration, checking if
+// |b| is a composite witness for |mont->N|. |miller_rabin| must have been
+// initialized with |bn_miller_rabin_setup|. On success, it returns one and sets
+// |*out_is_possibly_prime| to one if |mont->N| may still be prime or zero if
+// |b| shows it is composite. On allocation or internal failure, it returns
+// zero.
+OPENSSL_EXPORT int bn_miller_rabin_iteration(
+    const BN_MILLER_RABIN *miller_rabin, int *out_is_possibly_prime,
+    const BIGNUM *b, const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_rshift1_words sets |r| to |a| >> 1, where both arrays are |num| bits wide.
+void bn_rshift1_words(BN_ULONG *r, const BN_ULONG *a, size_t num);
+
+// bn_rshift_words sets |r| to |a| >> |shift|, where both arrays are |num| bits
+// wide.
+void bn_rshift_words(BN_ULONG *r, const BN_ULONG *a, unsigned shift,
+                     size_t num);
+
+// bn_rshift_secret_shift behaves like |BN_rshift| but runs in time independent
+// of both |a| and |n|.
+OPENSSL_EXPORT int bn_rshift_secret_shift(BIGNUM *r, const BIGNUM *a,
+                                          unsigned n, BN_CTX *ctx);
+
+// bn_reduce_once sets |r| to |a| mod |m| where 0 <= |a| < 2*|m|. It returns
+// zero if |a| < |m| and a mask of all ones if |a| >= |m|. Each array is |num|
+// words long, but |a| has an additional word specified by |carry|. |carry| must
+// be zero or one, as implied by the bounds on |a|.
+//
+// |r|, |a|, and |m| may not alias. Use |bn_reduce_once_in_place| if |r| and |a|
+// must alias.
+BN_ULONG bn_reduce_once(BN_ULONG *r, const BN_ULONG *a, BN_ULONG carry,
+                        const BN_ULONG *m, size_t num);
+
+// bn_reduce_once_in_place behaves like |bn_reduce_once| but acts in-place on
+// |r|, using |tmp| as scratch space. |r|, |tmp|, and |m| may not alias.
+BN_ULONG bn_reduce_once_in_place(BN_ULONG *r, BN_ULONG carry, const BN_ULONG *m,
+                                 BN_ULONG *tmp, size_t num);
+
+
+// Constant-time non-modular arithmetic.
+//
+// The following functions implement non-modular arithmetic in constant-time
+// and pessimally set |r->width| to the largest possible word size.
+//
+// Note this means that, e.g., repeatedly multiplying by one will cause widths
+// to increase without bound. The corresponding public API functions minimize
+// their outputs to avoid regressing calculator consumers.
+
+// bn_uadd_consttime behaves like |BN_uadd|, but it pessimally sets
+// |r->width| = |a->width| + |b->width| + 1.
+int bn_uadd_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// bn_usub_consttime behaves like |BN_usub|, but it pessimally sets
+// |r->width| = |a->width|.
+int bn_usub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// bn_abs_sub_consttime sets |r| to the absolute value of |a| - |b|, treating
+// both inputs as secret. It returns one on success and zero on error.
+OPENSSL_EXPORT int bn_abs_sub_consttime(BIGNUM *r, const BIGNUM *a,
+                                        const BIGNUM *b, BN_CTX *ctx);
+
+// bn_mul_consttime behaves like |BN_mul|, but it rejects negative inputs and
+// pessimally sets |r->width| to |a->width| + |b->width|, to avoid leaking
+// information about |a| and |b|.
+int bn_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+
+// bn_sqrt_consttime behaves like |BN_sqrt|, but it pessimally sets |r->width|
+// to 2*|a->width|, to avoid leaking information about |a| and |b|.
+int bn_sqr_consttime(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+
+// bn_div_consttime behaves like |BN_div|, but it rejects negative inputs and
+// treats both inputs, including their magnitudes, as secret. It is, as a
+// result, much slower than |BN_div| and should only be used for rare operations
+// where Montgomery reduction is not available.
+//
+// Note that |quotient->width| will be set pessimally to |numerator->width|.
+OPENSSL_EXPORT int bn_div_consttime(BIGNUM *quotient, BIGNUM *remainder,
+                                    const BIGNUM *numerator,
+                                    const BIGNUM *divisor, BN_CTX *ctx);
+
+// bn_is_relatively_prime checks whether GCD(|x|, |y|) is one. On success, it
+// returns one and sets |*out_relatively_prime| to one if the GCD was one and
+// zero otherwise. On error, it returns zero.
+OPENSSL_EXPORT int bn_is_relatively_prime(int *out_relatively_prime,
+                                          const BIGNUM *x, const BIGNUM *y,
+                                          BN_CTX *ctx);
+
+// bn_lcm_consttime sets |r| to LCM(|a|, |b|). It returns one and success and
+// zero on error. |a| and |b| are both treated as secret.
+OPENSSL_EXPORT int bn_lcm_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    BN_CTX *ctx);
+
+
+// Constant-time modular arithmetic.
+//
+// The following functions implement basic constant-time modular arithmetic.
+
+// bn_mod_add_words sets |r| to |a| + |b| (mod |m|), using |tmp| as scratch
+// space. Each array is |num| words long. |a| and |b| must be < |m|. Any pair of
+// |r|, |a|, and |b| may alias.
+void bn_mod_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num);
+
+// bn_mod_add_consttime acts like |BN_mod_add_quick| but takes a |BN_CTX|.
+int bn_mod_add_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx);
+
+// bn_mod_sub_words sets |r| to |a| - |b| (mod |m|), using |tmp| as scratch
+// space. Each array is |num| words long. |a| and |b| must be < |m|. Any pair of
+// |r|, |a|, and |b| may alias.
+void bn_mod_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num);
+
+// bn_mod_sub_consttime acts like |BN_mod_sub_quick| but takes a |BN_CTX|.
+int bn_mod_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx);
+
+// bn_mod_lshift1_consttime acts like |BN_mod_lshift1_quick| but takes a
+// |BN_CTX|.
+int bn_mod_lshift1_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                             BN_CTX *ctx);
+
+// bn_mod_lshift_consttime acts like |BN_mod_lshift_quick| but takes a |BN_CTX|.
+int bn_mod_lshift_consttime(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                            BN_CTX *ctx);
+
+// bn_mod_inverse_consttime sets |r| to |a|^-1, mod |n|. |a| must be non-
+// negative and less than |n|. It returns one on success and zero on error. On
+// failure, if the failure was caused by |a| having no inverse mod |n| then
+// |*out_no_inverse| will be set to one; otherwise it will be set to zero.
+//
+// This function treats both |a| and |n| as secret, provided they are both non-
+// zero and the inverse exists. It should only be used for even moduli where
+// none of the less general implementations are applicable.
+OPENSSL_EXPORT int bn_mod_inverse_consttime(BIGNUM *r, int *out_no_inverse,
+                                            const BIGNUM *a, const BIGNUM *n,
+                                            BN_CTX *ctx);
+
+// bn_mod_inverse_prime sets |out| to the modular inverse of |a| modulo |p|,
+// computed with Fermat's Little Theorem. It returns one on success and zero on
+// error. If |mont_p| is NULL, one will be computed temporarily.
+int bn_mod_inverse_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                         BN_CTX *ctx, const BN_MONT_CTX *mont_p);
+
+// bn_mod_inverse_secret_prime behaves like |bn_mod_inverse_prime| but uses
+// |BN_mod_exp_mont_consttime| instead of |BN_mod_exp_mont| in hopes of
+// protecting the exponent.
+int bn_mod_inverse_secret_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                                BN_CTX *ctx, const BN_MONT_CTX *mont_p);
+
+
+// Low-level operations for small numbers.
+//
+// The following functions implement algorithms suitable for use with scalars
+// and field elements in elliptic curves. They rely on the number being small
+// both to stack-allocate various temporaries and because they do not implement
+// optimizations useful for the larger values used in RSA.
+
+// BN_SMALL_MAX_WORDS is the largest size input these functions handle. This
+// limit allows temporaries to be more easily stack-allocated. This limit is set
+// to accommodate P-521.
+#if defined(OPENSSL_32_BIT)
+#define BN_SMALL_MAX_WORDS 17
+#else
+#define BN_SMALL_MAX_WORDS 9
+#endif
+
+// bn_mul_small sets |r| to |a|*|b|. |num_r| must be |num_a| + |num_b|. |r| may
+// not alias with |a| or |b|.
+void bn_mul_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a,
+                 const BN_ULONG *b, size_t num_b);
+
+// bn_sqr_small sets |r| to |a|^2. |num_a| must be at most |BN_SMALL_MAX_WORDS|.
+// |num_r| must be |num_a|*2. |r| and |a| may not alias.
+void bn_sqr_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a);
+
+// In the following functions, the modulus must be at most |BN_SMALL_MAX_WORDS|
+// words long.
+
+// bn_to_montgomery_small sets |r| to |a| translated to the Montgomery domain.
+// |r| and |a| are |num| words long, which must be |mont->N.width|. |a| must be
+// fully reduced and may alias |r|.
+void bn_to_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                            const BN_MONT_CTX *mont);
+
+// bn_from_montgomery_small sets |r| to |a| translated out of the Montgomery
+// domain. |r| and |a| are |num| words long, which must be |mont->N.width|. |a|
+// must be fully-reduced and may alias |r|.
+void bn_from_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                              const BN_MONT_CTX *mont);
+
+// bn_mod_mul_montgomery_small sets |r| to |a| * |b| mod |mont->N|. Both inputs
+// and outputs are in the Montgomery domain. Each array is |num| words long,
+// which must be |mont->N.width|. Any two of |r|, |a|, and |b| may alias. |a|
+// and |b| must be reduced on input.
+void bn_mod_mul_montgomery_small(BN_ULONG *r, const BN_ULONG *a,
+                                 const BN_ULONG *b, size_t num,
+                                 const BN_MONT_CTX *mont);
+
+// bn_mod_exp_mont_small sets |r| to |a|^|p| mod |mont->N|. It returns one on
+// success and zero on programmer or internal error. Both inputs and outputs are
+// in the Montgomery domain. |r| and |a| are |num| words long, which must be
+// |mont->N.width| and at most |BN_SMALL_MAX_WORDS|. |a| must be fully-reduced.
+// This function runs in time independent of |a|, but |p| and |mont->N| are
+// public values. |a| must be fully-reduced and may alias with |r|.
+//
+// Note this function differs from |BN_mod_exp_mont| which uses Montgomery
+// reduction but takes input and output outside the Montgomery domain. Combine
+// this function with |bn_from_montgomery_small| and |bn_to_montgomery_small|
+// if necessary.
+void bn_mod_exp_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                           const BN_ULONG *p, size_t num_p,
+                           const BN_MONT_CTX *mont);
+
+// bn_mod_inverse_prime_mont_small sets |r| to |a|^-1 mod |mont->N|. |mont->N|
+// must be a prime. |r| and |a| are |num| words long, which must be
+// |mont->N.width| and at most |BN_SMALL_MAX_WORDS|. |a| must be fully-reduced
+// and may alias |r|. This function runs in time independent of |a|, but
+// |mont->N| is a public value.
+void bn_mod_inverse_prime_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                                     const BN_MONT_CTX *mont);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BN_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h.grpc_back
new file mode 100644
index 0000000..d58a2ac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/internal.h.grpc_back	
@@ -0,0 +1,691 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_BN_INTERNAL_H
+#define OPENSSL_HEADER_BN_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(OPENSSL_X86_64) && defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <intrin.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#pragma intrinsic(__umulh, _umul128)
+#endif
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(OPENSSL_64_BIT)
+
+#if defined(BORINGSSL_HAS_UINT128)
+// MSVC doesn't support two-word integers on 64-bit.
+#define BN_ULLONG uint128_t
+#if defined(BORINGSSL_CAN_DIVIDE_UINT128)
+#define BN_CAN_DIVIDE_ULLONG
+#endif
+#endif
+
+#define BN_BITS2 64
+#define BN_BYTES 8
+#define BN_BITS4 32
+#define BN_MASK2 (0xffffffffffffffffUL)
+#define BN_MASK2l (0xffffffffUL)
+#define BN_MASK2h (0xffffffff00000000UL)
+#define BN_MASK2h1 (0xffffffff80000000UL)
+#define BN_MONT_CTX_N0_LIMBS 1
+#define BN_DEC_CONV (10000000000000000000UL)
+#define BN_DEC_NUM 19
+#define TOBN(hi, lo) ((BN_ULONG)(hi) << 32 | (lo))
+
+#elif defined(OPENSSL_32_BIT)
+
+#define BN_ULLONG uint64_t
+#define BN_CAN_DIVIDE_ULLONG
+#define BN_BITS2 32
+#define BN_BYTES 4
+#define BN_BITS4 16
+#define BN_MASK2 (0xffffffffUL)
+#define BN_MASK2l (0xffffUL)
+#define BN_MASK2h1 (0xffff8000UL)
+#define BN_MASK2h (0xffff0000UL)
+// On some 32-bit platforms, Montgomery multiplication is done using 64-bit
+// arithmetic with SIMD instructions. On such platforms, |BN_MONT_CTX::n0|
+// needs to be two words long. Only certain 32-bit platforms actually make use
+// of n0[1] and shorter R value would suffice for the others. However,
+// currently only the assembly files know which is which.
+#define BN_MONT_CTX_N0_LIMBS 2
+#define BN_DEC_CONV (1000000000UL)
+#define BN_DEC_NUM 9
+#define TOBN(hi, lo) (lo), (hi)
+
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+#define BN_CAN_USE_INLINE_ASM
+#endif
+
+// |BN_mod_exp_mont_consttime| is based on the assumption that the L1 data
+// cache line width of the target processor is at least the following value.
+#define MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH 64
+
+// The number of |BN_ULONG|s needed for the |BN_mod_exp_mont_consttime| stack-
+// allocated storage buffer. The buffer is just the right size for the RSAZ
+// and is about ~1KB larger than what's necessary (4480 bytes) for 1024-bit
+// inputs.
+#define MOD_EXP_CTIME_STORAGE_LEN \
+  (((320u * 3u) + (32u * 9u * 16u)) / sizeof(BN_ULONG))
+
+#define STATIC_BIGNUM(x)                                    \
+  {                                                         \
+    (BN_ULONG *)(x), sizeof(x) / sizeof(BN_ULONG),          \
+        sizeof(x) / sizeof(BN_ULONG), 0, BN_FLG_STATIC_DATA \
+  }
+
+#if defined(BN_ULLONG)
+#define Lw(t) ((BN_ULONG)(t))
+#define Hw(t) ((BN_ULONG)((t) >> BN_BITS2))
+#endif
+
+// bn_minimal_width returns the minimal value of |bn->top| which fits the
+// value of |bn|.
+int bn_minimal_width(const BIGNUM *bn);
+
+// bn_set_minimal_width sets |bn->width| to |bn_minimal_width(bn)|. If |bn| is
+// zero, |bn->neg| is set to zero.
+void bn_set_minimal_width(BIGNUM *bn);
+
+// bn_wexpand ensures that |bn| has at least |words| works of space without
+// altering its value. It returns one on success or zero on allocation
+// failure.
+int bn_wexpand(BIGNUM *bn, size_t words);
+
+// bn_expand acts the same as |bn_wexpand|, but takes a number of bits rather
+// than a number of words.
+int bn_expand(BIGNUM *bn, size_t bits);
+
+// bn_resize_words adjusts |bn->top| to be |words|. It returns one on success
+// and zero on allocation error or if |bn|'s value is too large.
+OPENSSL_EXPORT int bn_resize_words(BIGNUM *bn, size_t words);
+
+// bn_select_words sets |r| to |a| if |mask| is all ones or |b| if |mask| is
+// all zeros.
+void bn_select_words(BN_ULONG *r, BN_ULONG mask, const BN_ULONG *a,
+                     const BN_ULONG *b, size_t num);
+
+// bn_set_words sets |bn| to the value encoded in the |num| words in |words|,
+// least significant word first.
+int bn_set_words(BIGNUM *bn, const BN_ULONG *words, size_t num);
+
+// bn_fits_in_words returns one if |bn| may be represented in |num| words, plus
+// a sign bit, and zero otherwise.
+int bn_fits_in_words(const BIGNUM *bn, size_t num);
+
+// bn_copy_words copies the value of |bn| to |out| and returns one if the value
+// is representable in |num| words. Otherwise, it returns zero.
+int bn_copy_words(BN_ULONG *out, size_t num, const BIGNUM *bn);
+
+// bn_mul_add_words multiples |ap| by |w|, adds the result to |rp|, and places
+// the result in |rp|. |ap| and |rp| must both be |num| words long. It returns
+// the carry word of the operation. |ap| and |rp| may be equal but otherwise may
+// not alias.
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num,
+                          BN_ULONG w);
+
+// bn_mul_words multiples |ap| by |w| and places the result in |rp|. |ap| and
+// |rp| must both be |num| words long. It returns the carry word of the
+// operation. |ap| and |rp| may be equal but otherwise may not alias.
+BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num, BN_ULONG w);
+
+// bn_sqr_words sets |rp[2*i]| and |rp[2*i+1]| to |ap[i]|'s square, for all |i|
+// up to |num|. |ap| is an array of |num| words and |rp| an array of |2*num|
+// words. |ap| and |rp| may not alias.
+//
+// This gives the contribution of the |ap[i]*ap[i]| terms when squaring |ap|.
+void bn_sqr_words(BN_ULONG *rp, const BN_ULONG *ap, size_t num);
+
+// bn_add_words adds |ap| to |bp| and places the result in |rp|, each of which
+// are |num| words long. It returns the carry bit, which is one if the operation
+// overflowed and zero otherwise. Any pair of |ap|, |bp|, and |rp| may be equal
+// to each other but otherwise may not alias.
+BN_ULONG bn_add_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t num);
+
+// bn_sub_words subtracts |bp| from |ap| and places the result in |rp|. It
+// returns the borrow bit, which is one if the computation underflowed and zero
+// otherwise. Any pair of |ap|, |bp|, and |rp| may be equal to each other but
+// otherwise may not alias.
+BN_ULONG bn_sub_words(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                      size_t num);
+
+// bn_mul_comba4 sets |r| to the product of |a| and |b|.
+void bn_mul_comba4(BN_ULONG r[8], const BN_ULONG a[4], const BN_ULONG b[4]);
+
+// bn_mul_comba8 sets |r| to the product of |a| and |b|.
+void bn_mul_comba8(BN_ULONG r[16], const BN_ULONG a[8], const BN_ULONG b[8]);
+
+// bn_sqr_comba8 sets |r| to |a|^2.
+void bn_sqr_comba8(BN_ULONG r[16], const BN_ULONG a[4]);
+
+// bn_sqr_comba4 sets |r| to |a|^2.
+void bn_sqr_comba4(BN_ULONG r[8], const BN_ULONG a[4]);
+
+// bn_less_than_words returns one if |a| < |b| and zero otherwise, where |a|
+// and |b| both are |len| words long. It runs in constant time.
+int bn_less_than_words(const BN_ULONG *a, const BN_ULONG *b, size_t len);
+
+// bn_in_range_words returns one if |min_inclusive| <= |a| < |max_exclusive|,
+// where |a| and |max_exclusive| both are |len| words long. |a| and
+// |max_exclusive| are treated as secret.
+int bn_in_range_words(const BN_ULONG *a, BN_ULONG min_inclusive,
+                      const BN_ULONG *max_exclusive, size_t len);
+
+// bn_rand_range_words sets |out| to a uniformly distributed random number from
+// |min_inclusive| to |max_exclusive|. Both |out| and |max_exclusive| are |len|
+// words long.
+//
+// This function runs in time independent of the result, but |min_inclusive| and
+// |max_exclusive| are public data. (Information about the range is unavoidably
+// leaked by how many iterations it took to select a number.)
+int bn_rand_range_words(BN_ULONG *out, BN_ULONG min_inclusive,
+                        const BN_ULONG *max_exclusive, size_t len,
+                        const uint8_t additional_data[32]);
+
+// bn_range_secret_range behaves like |BN_rand_range_ex|, but treats
+// |max_exclusive| as secret. Because of this constraint, the distribution of
+// values returned is more complex.
+//
+// Rather than repeatedly generating values until one is in range, which would
+// leak information, it generates one value. If the value is in range, it sets
+// |*out_is_uniform| to one. Otherwise, it sets |*out_is_uniform| to zero,
+// fixing up the value to force it in range.
+//
+// The subset of calls to |bn_rand_secret_range| which set |*out_is_uniform| to
+// one are uniformly distributed in the target range. Calls overall are not.
+// This function is intended for use in situations where the extra values are
+// still usable and where the number of iterations needed to reach the target
+// number of uniform outputs may be blinded for negligible probabilities of
+// timing leaks.
+//
+// Although this function treats |max_exclusive| as secret, it treats the number
+// of bits in |max_exclusive| as public.
+int bn_rand_secret_range(BIGNUM *r, int *out_is_uniform, BN_ULONG min_inclusive,
+                         const BIGNUM *max_exclusive);
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define OPENSSL_BN_ASM_MONT
+// bn_mul_mont writes |ap| * |bp| mod |np| to |rp|, each |num| words
+// long. Inputs and outputs are in Montgomery form. |n0| is a pointer to the
+// corresponding field in |BN_MONT_CTX|. It returns one if |bn_mul_mont| handles
+// inputs of this size and zero otherwise.
+//
+// TODO(davidben): The x86_64 implementation expects a 32-bit input and masks
+// off upper bits. The aarch64 implementation expects a 64-bit input and does
+// not. |size_t| is the safer option but not strictly correct for x86_64. But
+// this function implicitly already has a bound on the size of |num| because it
+// internally creates |num|-sized stack allocation.
+//
+// See also discussion in |ToWord| in abi_test.h for notes on smaller-than-word
+// inputs.
+int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
+                const BN_ULONG *np, const BN_ULONG *n0, size_t num);
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64)
+#define OPENSSL_BN_ASM_MONT5
+
+// bn_mul_mont_gather5 multiples loads index |power| of |table|, multiplies it
+// by |ap| modulo |np|, and stores the result in |rp|. The values are |num|
+// words long and represented in Montgomery form. |n0| is a pointer to the
+// corresponding field in |BN_MONT_CTX|.
+void bn_mul_mont_gather5(BN_ULONG *rp, const BN_ULONG *ap,
+                         const BN_ULONG *table, const BN_ULONG *np,
+                         const BN_ULONG *n0, int num, int power);
+
+// bn_scatter5 stores |inp| to index |power| of |table|. |inp| and each entry of
+// |table| are |num| words long. |power| must be less than 32. |table| must be
+// 32*|num| words long.
+void bn_scatter5(const BN_ULONG *inp, size_t num, BN_ULONG *table,
+                 size_t power);
+
+// bn_gather5 loads index |power| of |table| and stores it in |out|. |out| and
+// each entry of |table| are |num| words long. |power| must be less than 32.
+void bn_gather5(BN_ULONG *out, size_t num, BN_ULONG *table, size_t power);
+
+// bn_power5 squares |ap| five times and multiplies it by the value stored at
+// index |power| of |table|, modulo |np|. It stores the result in |rp|. The
+// values are |num| words long and represented in Montgomery form. |n0| is a
+// pointer to the corresponding field in |BN_MONT_CTX|. |num| must be divisible
+// by 8.
+void bn_power5(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *table,
+               const BN_ULONG *np, const BN_ULONG *n0, int num, int power);
+
+// bn_from_montgomery converts |ap| from Montgomery form modulo |np| and writes
+// the result in |rp|, each of which is |num| words long. It returns one on
+// success and zero if it cannot handle inputs of length |num|. |n0| is a
+// pointer to the corresponding field in |BN_MONT_CTX|.
+int bn_from_montgomery(BN_ULONG *rp, const BN_ULONG *ap,
+                       const BN_ULONG *not_used, const BN_ULONG *np,
+                       const BN_ULONG *n0, int num);
+#endif  // !OPENSSL_NO_ASM && OPENSSL_X86_64
+
+uint64_t bn_mont_n0(const BIGNUM *n);
+
+// bn_mod_exp_base_2_consttime calculates r = 2**p (mod n). |p| must be larger
+// than log_2(n); i.e. 2**p must be larger than |n|. |n| must be positive and
+// odd. |p| and the bit width of |n| are assumed public, but |n| is otherwise
+// treated as secret.
+int bn_mod_exp_base_2_consttime(BIGNUM *r, unsigned p, const BIGNUM *n,
+                                BN_CTX *ctx);
+
+#if defined(OPENSSL_X86_64) && defined(_MSC_VER)
+#define BN_UMULT_LOHI(low, high, a, b) ((low) = _umul128((a), (b), &(high)))
+#endif
+
+#if !defined(BN_ULLONG) && !defined(BN_UMULT_LOHI)
+#error "Either BN_ULLONG or BN_UMULT_LOHI must be defined on every platform."
+#endif
+
+// bn_jacobi returns the Jacobi symbol of |a| and |b| (which is -1, 0 or 1), or
+// -2 on error.
+int bn_jacobi(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+
+// bn_is_bit_set_words returns one if bit |bit| is set in |a| and zero
+// otherwise.
+int bn_is_bit_set_words(const BN_ULONG *a, size_t num, unsigned bit);
+
+// bn_one_to_montgomery sets |r| to one in Montgomery form. It returns one on
+// success and zero on error. This function treats the bit width of the modulus
+// as public.
+int bn_one_to_montgomery(BIGNUM *r, const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_less_than_montgomery_R returns one if |bn| is less than the Montgomery R
+// value for |mont| and zero otherwise.
+int bn_less_than_montgomery_R(const BIGNUM *bn, const BN_MONT_CTX *mont);
+
+// bn_mod_u16_consttime returns |bn| mod |d|, ignoring |bn|'s sign bit. It runs
+// in time independent of the value of |bn|, but it treats |d| as public.
+OPENSSL_EXPORT uint16_t bn_mod_u16_consttime(const BIGNUM *bn, uint16_t d);
+
+// bn_odd_number_is_obviously_composite returns one if |bn| is divisible by one
+// of the first several odd primes and zero otherwise.
+int bn_odd_number_is_obviously_composite(const BIGNUM *bn);
+
+// A BN_MILLER_RABIN stores state common to each Miller-Rabin iteration. It is
+// initialized within an existing |BN_CTX| scope and may not be used after
+// that scope is released with |BN_CTX_end|. Field names match those in FIPS
+// 186-4, section C.3.1.
+typedef struct {
+  // w1 is w-1.
+  BIGNUM *w1;
+  // m is (w-1)/2^a.
+  BIGNUM *m;
+  // one_mont is 1 (mod w) in Montgomery form.
+  BIGNUM *one_mont;
+  // w1_mont is w-1 (mod w) in Montgomery form.
+  BIGNUM *w1_mont;
+  // w_bits is BN_num_bits(w).
+  int w_bits;
+  // a is the largest integer such that 2^a divides w-1.
+  int a;
+} BN_MILLER_RABIN;
+
+// bn_miller_rabin_init initializes |miller_rabin| for testing if |mont->N| is
+// prime. It returns one on success and zero on error.
+OPENSSL_EXPORT int bn_miller_rabin_init(BN_MILLER_RABIN *miller_rabin,
+                                        const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_miller_rabin_iteration performs one Miller-Rabin iteration, checking if
+// |b| is a composite witness for |mont->N|. |miller_rabin| must have been
+// initialized with |bn_miller_rabin_setup|. On success, it returns one and sets
+// |*out_is_possibly_prime| to one if |mont->N| may still be prime or zero if
+// |b| shows it is composite. On allocation or internal failure, it returns
+// zero.
+OPENSSL_EXPORT int bn_miller_rabin_iteration(
+    const BN_MILLER_RABIN *miller_rabin, int *out_is_possibly_prime,
+    const BIGNUM *b, const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// bn_rshift1_words sets |r| to |a| >> 1, where both arrays are |num| bits wide.
+void bn_rshift1_words(BN_ULONG *r, const BN_ULONG *a, size_t num);
+
+// bn_rshift_words sets |r| to |a| >> |shift|, where both arrays are |num| bits
+// wide.
+void bn_rshift_words(BN_ULONG *r, const BN_ULONG *a, unsigned shift,
+                     size_t num);
+
+// bn_rshift_secret_shift behaves like |BN_rshift| but runs in time independent
+// of both |a| and |n|.
+OPENSSL_EXPORT int bn_rshift_secret_shift(BIGNUM *r, const BIGNUM *a,
+                                          unsigned n, BN_CTX *ctx);
+
+// bn_reduce_once sets |r| to |a| mod |m| where 0 <= |a| < 2*|m|. It returns
+// zero if |a| < |m| and a mask of all ones if |a| >= |m|. Each array is |num|
+// words long, but |a| has an additional word specified by |carry|. |carry| must
+// be zero or one, as implied by the bounds on |a|.
+//
+// |r|, |a|, and |m| may not alias. Use |bn_reduce_once_in_place| if |r| and |a|
+// must alias.
+BN_ULONG bn_reduce_once(BN_ULONG *r, const BN_ULONG *a, BN_ULONG carry,
+                        const BN_ULONG *m, size_t num);
+
+// bn_reduce_once_in_place behaves like |bn_reduce_once| but acts in-place on
+// |r|, using |tmp| as scratch space. |r|, |tmp|, and |m| may not alias.
+BN_ULONG bn_reduce_once_in_place(BN_ULONG *r, BN_ULONG carry, const BN_ULONG *m,
+                                 BN_ULONG *tmp, size_t num);
+
+
+// Constant-time non-modular arithmetic.
+//
+// The following functions implement non-modular arithmetic in constant-time
+// and pessimally set |r->width| to the largest possible word size.
+//
+// Note this means that, e.g., repeatedly multiplying by one will cause widths
+// to increase without bound. The corresponding public API functions minimize
+// their outputs to avoid regressing calculator consumers.
+
+// bn_uadd_consttime behaves like |BN_uadd|, but it pessimally sets
+// |r->width| = |a->width| + |b->width| + 1.
+int bn_uadd_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// bn_usub_consttime behaves like |BN_usub|, but it pessimally sets
+// |r->width| = |a->width|.
+int bn_usub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// bn_abs_sub_consttime sets |r| to the absolute value of |a| - |b|, treating
+// both inputs as secret. It returns one on success and zero on error.
+OPENSSL_EXPORT int bn_abs_sub_consttime(BIGNUM *r, const BIGNUM *a,
+                                        const BIGNUM *b, BN_CTX *ctx);
+
+// bn_mul_consttime behaves like |BN_mul|, but it rejects negative inputs and
+// pessimally sets |r->width| to |a->width| + |b->width|, to avoid leaking
+// information about |a| and |b|.
+int bn_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+
+// bn_sqrt_consttime behaves like |BN_sqrt|, but it pessimally sets |r->width|
+// to 2*|a->width|, to avoid leaking information about |a| and |b|.
+int bn_sqr_consttime(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+
+// bn_div_consttime behaves like |BN_div|, but it rejects negative inputs and
+// treats both inputs, including their magnitudes, as secret. It is, as a
+// result, much slower than |BN_div| and should only be used for rare operations
+// where Montgomery reduction is not available.
+//
+// Note that |quotient->width| will be set pessimally to |numerator->width|.
+OPENSSL_EXPORT int bn_div_consttime(BIGNUM *quotient, BIGNUM *remainder,
+                                    const BIGNUM *numerator,
+                                    const BIGNUM *divisor, BN_CTX *ctx);
+
+// bn_is_relatively_prime checks whether GCD(|x|, |y|) is one. On success, it
+// returns one and sets |*out_relatively_prime| to one if the GCD was one and
+// zero otherwise. On error, it returns zero.
+OPENSSL_EXPORT int bn_is_relatively_prime(int *out_relatively_prime,
+                                          const BIGNUM *x, const BIGNUM *y,
+                                          BN_CTX *ctx);
+
+// bn_lcm_consttime sets |r| to LCM(|a|, |b|). It returns one and success and
+// zero on error. |a| and |b| are both treated as secret.
+OPENSSL_EXPORT int bn_lcm_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    BN_CTX *ctx);
+
+
+// Constant-time modular arithmetic.
+//
+// The following functions implement basic constant-time modular arithmetic.
+
+// bn_mod_add_words sets |r| to |a| + |b| (mod |m|), using |tmp| as scratch
+// space. Each array is |num| words long. |a| and |b| must be < |m|. Any pair of
+// |r|, |a|, and |b| may alias.
+void bn_mod_add_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num);
+
+// bn_mod_add_consttime acts like |BN_mod_add_quick| but takes a |BN_CTX|.
+int bn_mod_add_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx);
+
+// bn_mod_sub_words sets |r| to |a| - |b| (mod |m|), using |tmp| as scratch
+// space. Each array is |num| words long. |a| and |b| must be < |m|. Any pair of
+// |r|, |a|, and |b| may alias.
+void bn_mod_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                      const BN_ULONG *m, BN_ULONG *tmp, size_t num);
+
+// bn_mod_sub_consttime acts like |BN_mod_sub_quick| but takes a |BN_CTX|.
+int bn_mod_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         const BIGNUM *m, BN_CTX *ctx);
+
+// bn_mod_lshift1_consttime acts like |BN_mod_lshift1_quick| but takes a
+// |BN_CTX|.
+int bn_mod_lshift1_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                             BN_CTX *ctx);
+
+// bn_mod_lshift_consttime acts like |BN_mod_lshift_quick| but takes a |BN_CTX|.
+int bn_mod_lshift_consttime(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                            BN_CTX *ctx);
+
+// bn_mod_inverse_consttime sets |r| to |a|^-1, mod |n|. |a| must be non-
+// negative and less than |n|. It returns one on success and zero on error. On
+// failure, if the failure was caused by |a| having no inverse mod |n| then
+// |*out_no_inverse| will be set to one; otherwise it will be set to zero.
+//
+// This function treats both |a| and |n| as secret, provided they are both non-
+// zero and the inverse exists. It should only be used for even moduli where
+// none of the less general implementations are applicable.
+OPENSSL_EXPORT int bn_mod_inverse_consttime(BIGNUM *r, int *out_no_inverse,
+                                            const BIGNUM *a, const BIGNUM *n,
+                                            BN_CTX *ctx);
+
+// bn_mod_inverse_prime sets |out| to the modular inverse of |a| modulo |p|,
+// computed with Fermat's Little Theorem. It returns one on success and zero on
+// error. If |mont_p| is NULL, one will be computed temporarily.
+int bn_mod_inverse_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                         BN_CTX *ctx, const BN_MONT_CTX *mont_p);
+
+// bn_mod_inverse_secret_prime behaves like |bn_mod_inverse_prime| but uses
+// |BN_mod_exp_mont_consttime| instead of |BN_mod_exp_mont| in hopes of
+// protecting the exponent.
+int bn_mod_inverse_secret_prime(BIGNUM *out, const BIGNUM *a, const BIGNUM *p,
+                                BN_CTX *ctx, const BN_MONT_CTX *mont_p);
+
+
+// Low-level operations for small numbers.
+//
+// The following functions implement algorithms suitable for use with scalars
+// and field elements in elliptic curves. They rely on the number being small
+// both to stack-allocate various temporaries and because they do not implement
+// optimizations useful for the larger values used in RSA.
+
+// BN_SMALL_MAX_WORDS is the largest size input these functions handle. This
+// limit allows temporaries to be more easily stack-allocated. This limit is set
+// to accommodate P-521.
+#if defined(OPENSSL_32_BIT)
+#define BN_SMALL_MAX_WORDS 17
+#else
+#define BN_SMALL_MAX_WORDS 9
+#endif
+
+// bn_mul_small sets |r| to |a|*|b|. |num_r| must be |num_a| + |num_b|. |r| may
+// not alias with |a| or |b|.
+void bn_mul_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a,
+                 const BN_ULONG *b, size_t num_b);
+
+// bn_sqr_small sets |r| to |a|^2. |num_a| must be at most |BN_SMALL_MAX_WORDS|.
+// |num_r| must be |num_a|*2. |r| and |a| may not alias.
+void bn_sqr_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a);
+
+// In the following functions, the modulus must be at most |BN_SMALL_MAX_WORDS|
+// words long.
+
+// bn_to_montgomery_small sets |r| to |a| translated to the Montgomery domain.
+// |r| and |a| are |num| words long, which must be |mont->N.width|. |a| must be
+// fully reduced and may alias |r|.
+void bn_to_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                            const BN_MONT_CTX *mont);
+
+// bn_from_montgomery_small sets |r| to |a| translated out of the Montgomery
+// domain. |r| and |a| are |num| words long, which must be |mont->N.width|. |a|
+// must be fully-reduced and may alias |r|.
+void bn_from_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                              const BN_MONT_CTX *mont);
+
+// bn_mod_mul_montgomery_small sets |r| to |a| * |b| mod |mont->N|. Both inputs
+// and outputs are in the Montgomery domain. Each array is |num| words long,
+// which must be |mont->N.width|. Any two of |r|, |a|, and |b| may alias. |a|
+// and |b| must be reduced on input.
+void bn_mod_mul_montgomery_small(BN_ULONG *r, const BN_ULONG *a,
+                                 const BN_ULONG *b, size_t num,
+                                 const BN_MONT_CTX *mont);
+
+// bn_mod_exp_mont_small sets |r| to |a|^|p| mod |mont->N|. It returns one on
+// success and zero on programmer or internal error. Both inputs and outputs are
+// in the Montgomery domain. |r| and |a| are |num| words long, which must be
+// |mont->N.width| and at most |BN_SMALL_MAX_WORDS|. |a| must be fully-reduced.
+// This function runs in time independent of |a|, but |p| and |mont->N| are
+// public values. |a| must be fully-reduced and may alias with |r|.
+//
+// Note this function differs from |BN_mod_exp_mont| which uses Montgomery
+// reduction but takes input and output outside the Montgomery domain. Combine
+// this function with |bn_from_montgomery_small| and |bn_to_montgomery_small|
+// if necessary.
+void bn_mod_exp_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                           const BN_ULONG *p, size_t num_p,
+                           const BN_MONT_CTX *mont);
+
+// bn_mod_inverse_prime_mont_small sets |r| to |a|^-1 mod |mont->N|. |mont->N|
+// must be a prime. |r| and |a| are |num| words long, which must be
+// |mont->N.width| and at most |BN_SMALL_MAX_WORDS|. |a| must be fully-reduced
+// and may alias |r|. This function runs in time independent of |a|, but
+// |mont->N| is a public value.
+void bn_mod_inverse_prime_mont_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                                     const BN_MONT_CTX *mont);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BN_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c
new file mode 100644
index 0000000..8d52e56
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c	
@@ -0,0 +1,146 @@
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+// least significant word
+#define BN_lsw(n) (((n)->width == 0) ? (BN_ULONG) 0 : (n)->d[0])
+
+int bn_jacobi(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  // In 'tab', only odd-indexed entries are relevant:
+  // For any odd BIGNUM n,
+  //     tab[BN_lsw(n) & 7]
+  // is $(-1)^{(n^2-1)/8}$ (using TeX notation).
+  // Note that the sign of n does not matter.
+  static const int tab[8] = {0, 1, 0, -1, 0, -1, 0, 1};
+
+  // The Jacobi symbol is only defined for odd modulus.
+  if (!BN_is_odd(b)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return -2;
+  }
+
+  // Require b be positive.
+  if (BN_is_negative(b)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return -2;
+  }
+
+  int ret = -2;
+  BN_CTX_start(ctx);
+  BIGNUM *A = BN_CTX_get(ctx);
+  BIGNUM *B = BN_CTX_get(ctx);
+  if (B == NULL) {
+    goto end;
+  }
+
+  if (!BN_copy(A, a) ||
+      !BN_copy(B, b)) {
+    goto end;
+  }
+
+  // Adapted from logic to compute the Kronecker symbol, originally implemented
+  // according to Henri Cohen, "A Course in Computational Algebraic Number
+  // Theory" (algorithm 1.4.10).
+
+  ret = 1;
+
+  while (1) {
+    // Cohen's step 3:
+
+    // B is positive and odd
+    if (BN_is_zero(A)) {
+      ret = BN_is_one(B) ? ret : 0;
+      goto end;
+    }
+
+    // now A is non-zero
+    int i = 0;
+    while (!BN_is_bit_set(A, i)) {
+      i++;
+    }
+    if (!BN_rshift(A, A, i)) {
+      ret = -2;
+      goto end;
+    }
+    if (i & 1) {
+      // i is odd
+      // multiply 'ret' by  $(-1)^{(B^2-1)/8}$
+      ret = ret * tab[BN_lsw(B) & 7];
+    }
+
+    // Cohen's step 4:
+    // multiply 'ret' by  $(-1)^{(A-1)(B-1)/4}$
+    if ((A->neg ? ~BN_lsw(A) : BN_lsw(A)) & BN_lsw(B) & 2) {
+      ret = -ret;
+    }
+
+    // (A, B) := (B mod |A|, |A|)
+    if (!BN_nnmod(B, B, A, ctx)) {
+      ret = -2;
+      goto end;
+    }
+    BIGNUM *tmp = A;
+    A = B;
+    B = tmp;
+    tmp->neg = 0;
+  }
+
+end:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c.grpc_back
new file mode 100644
index 0000000..d1a9d50
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/jacobi.c.grpc_back	
@@ -0,0 +1,146 @@
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+// least significant word
+#define BN_lsw(n) (((n)->width == 0) ? (BN_ULONG) 0 : (n)->d[0])
+
+int bn_jacobi(const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  // In 'tab', only odd-indexed entries are relevant:
+  // For any odd BIGNUM n,
+  //     tab[BN_lsw(n) & 7]
+  // is $(-1)^{(n^2-1)/8}$ (using TeX notation).
+  // Note that the sign of n does not matter.
+  static const int tab[8] = {0, 1, 0, -1, 0, -1, 0, 1};
+
+  // The Jacobi symbol is only defined for odd modulus.
+  if (!BN_is_odd(b)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return -2;
+  }
+
+  // Require b be positive.
+  if (BN_is_negative(b)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return -2;
+  }
+
+  int ret = -2;
+  BN_CTX_start(ctx);
+  BIGNUM *A = BN_CTX_get(ctx);
+  BIGNUM *B = BN_CTX_get(ctx);
+  if (B == NULL) {
+    goto end;
+  }
+
+  if (!BN_copy(A, a) ||
+      !BN_copy(B, b)) {
+    goto end;
+  }
+
+  // Adapted from logic to compute the Kronecker symbol, originally implemented
+  // according to Henri Cohen, "A Course in Computational Algebraic Number
+  // Theory" (algorithm 1.4.10).
+
+  ret = 1;
+
+  while (1) {
+    // Cohen's step 3:
+
+    // B is positive and odd
+    if (BN_is_zero(A)) {
+      ret = BN_is_one(B) ? ret : 0;
+      goto end;
+    }
+
+    // now A is non-zero
+    int i = 0;
+    while (!BN_is_bit_set(A, i)) {
+      i++;
+    }
+    if (!BN_rshift(A, A, i)) {
+      ret = -2;
+      goto end;
+    }
+    if (i & 1) {
+      // i is odd
+      // multiply 'ret' by  $(-1)^{(B^2-1)/8}$
+      ret = ret * tab[BN_lsw(B) & 7];
+    }
+
+    // Cohen's step 4:
+    // multiply 'ret' by  $(-1)^{(A-1)(B-1)/4}$
+    if ((A->neg ? ~BN_lsw(A) : BN_lsw(A)) & BN_lsw(B) & 2) {
+      ret = -ret;
+    }
+
+    // (A, B) := (B mod |A|, |A|)
+    if (!BN_nnmod(B, B, A, ctx)) {
+      ret = -2;
+      goto end;
+    }
+    BIGNUM *tmp = A;
+    A = B;
+    B = tmp;
+    tmp->neg = 0;
+  }
+
+end:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c
new file mode 100644
index 0000000..a6b00e2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c	
@@ -0,0 +1,502 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+BN_MONT_CTX *BN_MONT_CTX_new(void) {
+  BN_MONT_CTX *ret = OPENSSL_malloc(sizeof(BN_MONT_CTX));
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BN_MONT_CTX));
+  BN_init(&ret->RR);
+  BN_init(&ret->N);
+
+  return ret;
+}
+
+void BN_MONT_CTX_free(BN_MONT_CTX *mont) {
+  if (mont == NULL) {
+    return;
+  }
+
+  BN_free(&mont->RR);
+  BN_free(&mont->N);
+  OPENSSL_free(mont);
+}
+
+BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to, const BN_MONT_CTX *from) {
+  if (to == from) {
+    return to;
+  }
+
+  if (!BN_copy(&to->RR, &from->RR) ||
+      !BN_copy(&to->N, &from->N)) {
+    return NULL;
+  }
+  to->n0[0] = from->n0[0];
+  to->n0[1] = from->n0[1];
+  return to;
+}
+
+static int bn_mont_ctx_set_N_and_n0(BN_MONT_CTX *mont, const BIGNUM *mod) {
+  if (BN_is_zero(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+  if (!BN_is_odd(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (BN_is_negative(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  // Save the modulus.
+  if (!BN_copy(&mont->N, mod)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  // |mont->N| is always stored minimally. Computing RR efficiently leaks the
+  // size of the modulus. While the modulus may be private in RSA (one of the
+  // primes), their sizes are public, so this is fine.
+  bn_set_minimal_width(&mont->N);
+
+  // Find n0 such that n0 * N == -1 (mod r).
+  //
+  // Only certain BN_BITS2<=32 platforms actually make use of n0[1]. For the
+  // others, we could use a shorter R value and use faster |BN_ULONG|-based
+  // math instead of |uint64_t|-based math, which would be double-precision.
+  // However, currently only the assembler files know which is which.
+  OPENSSL_STATIC_ASSERT(BN_MONT_CTX_N0_LIMBS == 1 || BN_MONT_CTX_N0_LIMBS == 2,
+                        "BN_MONT_CTX_N0_LIMBS value is invalid");
+  OPENSSL_STATIC_ASSERT(
+      sizeof(BN_ULONG) * BN_MONT_CTX_N0_LIMBS == sizeof(uint64_t),
+      "uint64_t is insufficient precision for n0");
+  uint64_t n0 = bn_mont_n0(&mont->N);
+  mont->n0[0] = (BN_ULONG)n0;
+#if BN_MONT_CTX_N0_LIMBS == 2
+  mont->n0[1] = (BN_ULONG)(n0 >> BN_BITS2);
+#else
+  mont->n0[1] = 0;
+#endif
+  return 1;
+}
+
+int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx) {
+  if (!bn_mont_ctx_set_N_and_n0(mont, mod)) {
+    return 0;
+  }
+
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      return 0;
+    }
+    ctx = new_ctx;
+  }
+
+  // Save RR = R**2 (mod N). R is the smallest power of 2**BN_BITS2 such that R
+  // > mod. Even though the assembly on some 32-bit platforms works with 64-bit
+  // values, using |BN_BITS2| here, rather than |BN_MONT_CTX_N0_LIMBS *
+  // BN_BITS2|, is correct because R**2 will still be a multiple of the latter
+  // as |BN_MONT_CTX_N0_LIMBS| is either one or two.
+  unsigned lgBigR = mont->N.width * BN_BITS2;
+  BN_zero(&mont->RR);
+  int ok = BN_set_bit(&mont->RR, lgBigR * 2) &&
+           BN_mod(&mont->RR, &mont->RR, &mont->N, ctx) &&
+           bn_resize_words(&mont->RR, mont->N.width);
+  BN_CTX_free(new_ctx);
+  return ok;
+}
+
+BN_MONT_CTX *BN_MONT_CTX_new_for_modulus(const BIGNUM *mod, BN_CTX *ctx) {
+  BN_MONT_CTX *mont = BN_MONT_CTX_new();
+  if (mont == NULL ||
+      !BN_MONT_CTX_set(mont, mod, ctx)) {
+    BN_MONT_CTX_free(mont);
+    return NULL;
+  }
+  return mont;
+}
+
+BN_MONT_CTX *BN_MONT_CTX_new_consttime(const BIGNUM *mod, BN_CTX *ctx) {
+  BN_MONT_CTX *mont = BN_MONT_CTX_new();
+  if (mont == NULL ||
+      !bn_mont_ctx_set_N_and_n0(mont, mod)) {
+    goto err;
+  }
+  unsigned lgBigR = mont->N.width * BN_BITS2;
+  if (!bn_mod_exp_base_2_consttime(&mont->RR, lgBigR * 2, &mont->N, ctx) ||
+      !bn_resize_words(&mont->RR, mont->N.width)) {
+    goto err;
+  }
+  return mont;
+
+err:
+  BN_MONT_CTX_free(mont);
+  return NULL;
+}
+
+int BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, CRYPTO_MUTEX *lock,
+                           const BIGNUM *mod, BN_CTX *bn_ctx) {
+  CRYPTO_MUTEX_lock_read(lock);
+  BN_MONT_CTX *ctx = *pmont;
+  CRYPTO_MUTEX_unlock_read(lock);
+
+  if (ctx) {
+    return 1;
+  }
+
+  CRYPTO_MUTEX_lock_write(lock);
+  if (*pmont == NULL) {
+    *pmont = BN_MONT_CTX_new_for_modulus(mod, bn_ctx);
+  }
+  const int ok = *pmont != NULL;
+  CRYPTO_MUTEX_unlock_write(lock);
+  return ok;
+}
+
+int BN_to_montgomery(BIGNUM *ret, const BIGNUM *a, const BN_MONT_CTX *mont,
+                     BN_CTX *ctx) {
+  return BN_mod_mul_montgomery(ret, a, &mont->RR, mont, ctx);
+}
+
+static int bn_from_montgomery_in_place(BN_ULONG *r, size_t num_r, BN_ULONG *a,
+                                       size_t num_a, const BN_MONT_CTX *mont) {
+  const BN_ULONG *n = mont->N.d;
+  size_t num_n = mont->N.width;
+  if (num_r != num_n || num_a != 2 * num_n) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  // Add multiples of |n| to |r| until R = 2^(nl * BN_BITS2) divides it. On
+  // input, we had |r| < |n| * R, so now |r| < 2 * |n| * R. Note that |r|
+  // includes |carry| which is stored separately.
+  BN_ULONG n0 = mont->n0[0];
+  BN_ULONG carry = 0;
+  for (size_t i = 0; i < num_n; i++) {
+    BN_ULONG v = bn_mul_add_words(a + i, n, num_n, a[i] * n0);
+    v += carry + a[i + num_n];
+    carry |= (v != a[i + num_n]);
+    carry &= (v <= a[i + num_n]);
+    a[i + num_n] = v;
+  }
+
+  // Shift |num_n| words to divide by R. We have |a| < 2 * |n|. Note that |a|
+  // includes |carry| which is stored separately.
+  a += num_n;
+
+  // |a| thus requires at most one additional subtraction |n| to be reduced.
+  bn_reduce_once(r, a, carry, n, num_n);
+  return 1;
+}
+
+static int BN_from_montgomery_word(BIGNUM *ret, BIGNUM *r,
+                                   const BN_MONT_CTX *mont) {
+  if (r->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  const BIGNUM *n = &mont->N;
+  if (n->width == 0) {
+    ret->width = 0;
+    return 1;
+  }
+
+  int max = 2 * n->width;  // carry is stored separately
+  if (!bn_resize_words(r, max) ||
+      !bn_wexpand(ret, n->width)) {
+    return 0;
+  }
+
+  ret->width = n->width;
+  ret->neg = 0;
+  return bn_from_montgomery_in_place(ret->d, ret->width, r->d, r->width, mont);
+}
+
+int BN_from_montgomery(BIGNUM *r, const BIGNUM *a, const BN_MONT_CTX *mont,
+                       BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL ||
+      !BN_copy(t, a)) {
+    goto err;
+  }
+
+  ret = BN_from_montgomery_word(r, t, mont);
+
+err:
+  BN_CTX_end(ctx);
+
+  return ret;
+}
+
+int bn_one_to_montgomery(BIGNUM *r, const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // If the high bit of |n| is set, R = 2^(width*BN_BITS2) < 2 * |n|, so we
+  // compute R - |n| rather than perform Montgomery reduction.
+  const BIGNUM *n = &mont->N;
+  if (n->width > 0 && (n->d[n->width - 1] >> (BN_BITS2 - 1)) != 0) {
+    if (!bn_wexpand(r, n->width)) {
+      return 0;
+    }
+    r->d[0] = 0 - n->d[0];
+    for (int i = 1; i < n->width; i++) {
+      r->d[i] = ~n->d[i];
+    }
+    r->width = n->width;
+    r->neg = 0;
+    return 1;
+  }
+
+  return BN_from_montgomery(r, &mont->RR, mont, ctx);
+}
+
+static int bn_mod_mul_montgomery_fallback(BIGNUM *r, const BIGNUM *a,
+                                          const BIGNUM *b,
+                                          const BN_MONT_CTX *mont,
+                                          BN_CTX *ctx) {
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  if (a == b) {
+    if (!bn_sqr_consttime(tmp, a, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!bn_mul_consttime(tmp, a, b, ctx)) {
+      goto err;
+    }
+  }
+
+  // reduce from aRR to aR
+  if (!BN_from_montgomery_word(r, tmp, mont)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mod_mul_montgomery(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  if (a->neg || b->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT)
+  // |bn_mul_mont| requires at least 128 bits of limbs, at least for x86.
+  int num = mont->N.width;
+  if (num >= (128 / BN_BITS2) &&
+      a->width == num &&
+      b->width == num) {
+    if (!bn_wexpand(r, num)) {
+      return 0;
+    }
+    if (!bn_mul_mont(r->d, a->d, b->d, mont->N.d, mont->n0, num)) {
+      // The check above ensures this won't happen.
+      assert(0);
+      OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+    r->neg = 0;
+    r->width = num;
+    return 1;
+  }
+#endif
+
+  return bn_mod_mul_montgomery_fallback(r, a, b, mont, ctx);
+}
+
+int bn_less_than_montgomery_R(const BIGNUM *bn, const BN_MONT_CTX *mont) {
+  return !BN_is_negative(bn) &&
+         bn_fits_in_words(bn, mont->N.width);
+}
+
+void bn_to_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                            const BN_MONT_CTX *mont) {
+  bn_mod_mul_montgomery_small(r, a, mont->RR.d, num, mont);
+}
+
+void bn_from_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                              const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  BN_ULONG tmp[BN_SMALL_MAX_WORDS * 2];
+  OPENSSL_memcpy(tmp, a, num * sizeof(BN_ULONG));
+  OPENSSL_memset(tmp + num, 0, num * sizeof(BN_ULONG));
+  if (!bn_from_montgomery_in_place(r, num, tmp, 2 * num, mont)) {
+    abort();
+  }
+  OPENSSL_cleanse(tmp, 2 * num * sizeof(BN_ULONG));
+}
+
+void bn_mod_mul_montgomery_small(BN_ULONG *r, const BN_ULONG *a,
+                                 const BN_ULONG *b, size_t num,
+                                 const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT)
+  // |bn_mul_mont| requires at least 128 bits of limbs, at least for x86.
+  if (num >= (128 / BN_BITS2)) {
+    if (!bn_mul_mont(r, a, b, mont->N.d, mont->n0, num)) {
+      abort();  // The check above ensures this won't happen.
+    }
+    return;
+  }
+#endif
+
+  // Compute the product.
+  BN_ULONG tmp[2 * BN_SMALL_MAX_WORDS];
+  if (a == b) {
+    bn_sqr_small(tmp, 2 * num, a, num);
+  } else {
+    bn_mul_small(tmp, 2 * num, a, num, b, num);
+  }
+
+  // Reduce.
+  if (!bn_from_montgomery_in_place(r, num, tmp, 2 * num, mont)) {
+    abort();
+  }
+  OPENSSL_cleanse(tmp, 2 * num * sizeof(BN_ULONG));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c.grpc_back
new file mode 100644
index 0000000..b6eaf6a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery.c.grpc_back	
@@ -0,0 +1,502 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+BN_MONT_CTX *BN_MONT_CTX_new(void) {
+  BN_MONT_CTX *ret = OPENSSL_malloc(sizeof(BN_MONT_CTX));
+
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(BN_MONT_CTX));
+  BN_init(&ret->RR);
+  BN_init(&ret->N);
+
+  return ret;
+}
+
+void BN_MONT_CTX_free(BN_MONT_CTX *mont) {
+  if (mont == NULL) {
+    return;
+  }
+
+  BN_free(&mont->RR);
+  BN_free(&mont->N);
+  OPENSSL_free(mont);
+}
+
+BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to, const BN_MONT_CTX *from) {
+  if (to == from) {
+    return to;
+  }
+
+  if (!BN_copy(&to->RR, &from->RR) ||
+      !BN_copy(&to->N, &from->N)) {
+    return NULL;
+  }
+  to->n0[0] = from->n0[0];
+  to->n0[1] = from->n0[1];
+  return to;
+}
+
+static int bn_mont_ctx_set_N_and_n0(BN_MONT_CTX *mont, const BIGNUM *mod) {
+  if (BN_is_zero(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_DIV_BY_ZERO);
+    return 0;
+  }
+  if (!BN_is_odd(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_CALLED_WITH_EVEN_MODULUS);
+    return 0;
+  }
+  if (BN_is_negative(mod)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  // Save the modulus.
+  if (!BN_copy(&mont->N, mod)) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  // |mont->N| is always stored minimally. Computing RR efficiently leaks the
+  // size of the modulus. While the modulus may be private in RSA (one of the
+  // primes), their sizes are public, so this is fine.
+  bn_set_minimal_width(&mont->N);
+
+  // Find n0 such that n0 * N == -1 (mod r).
+  //
+  // Only certain BN_BITS2<=32 platforms actually make use of n0[1]. For the
+  // others, we could use a shorter R value and use faster |BN_ULONG|-based
+  // math instead of |uint64_t|-based math, which would be double-precision.
+  // However, currently only the assembler files know which is which.
+  OPENSSL_STATIC_ASSERT(BN_MONT_CTX_N0_LIMBS == 1 || BN_MONT_CTX_N0_LIMBS == 2,
+                        "BN_MONT_CTX_N0_LIMBS value is invalid");
+  OPENSSL_STATIC_ASSERT(
+      sizeof(BN_ULONG) * BN_MONT_CTX_N0_LIMBS == sizeof(uint64_t),
+      "uint64_t is insufficient precision for n0");
+  uint64_t n0 = bn_mont_n0(&mont->N);
+  mont->n0[0] = (BN_ULONG)n0;
+#if BN_MONT_CTX_N0_LIMBS == 2
+  mont->n0[1] = (BN_ULONG)(n0 >> BN_BITS2);
+#else
+  mont->n0[1] = 0;
+#endif
+  return 1;
+}
+
+int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx) {
+  if (!bn_mont_ctx_set_N_and_n0(mont, mod)) {
+    return 0;
+  }
+
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      return 0;
+    }
+    ctx = new_ctx;
+  }
+
+  // Save RR = R**2 (mod N). R is the smallest power of 2**BN_BITS2 such that R
+  // > mod. Even though the assembly on some 32-bit platforms works with 64-bit
+  // values, using |BN_BITS2| here, rather than |BN_MONT_CTX_N0_LIMBS *
+  // BN_BITS2|, is correct because R**2 will still be a multiple of the latter
+  // as |BN_MONT_CTX_N0_LIMBS| is either one or two.
+  unsigned lgBigR = mont->N.width * BN_BITS2;
+  BN_zero(&mont->RR);
+  int ok = BN_set_bit(&mont->RR, lgBigR * 2) &&
+           BN_mod(&mont->RR, &mont->RR, &mont->N, ctx) &&
+           bn_resize_words(&mont->RR, mont->N.width);
+  BN_CTX_free(new_ctx);
+  return ok;
+}
+
+BN_MONT_CTX *BN_MONT_CTX_new_for_modulus(const BIGNUM *mod, BN_CTX *ctx) {
+  BN_MONT_CTX *mont = BN_MONT_CTX_new();
+  if (mont == NULL ||
+      !BN_MONT_CTX_set(mont, mod, ctx)) {
+    BN_MONT_CTX_free(mont);
+    return NULL;
+  }
+  return mont;
+}
+
+BN_MONT_CTX *BN_MONT_CTX_new_consttime(const BIGNUM *mod, BN_CTX *ctx) {
+  BN_MONT_CTX *mont = BN_MONT_CTX_new();
+  if (mont == NULL ||
+      !bn_mont_ctx_set_N_and_n0(mont, mod)) {
+    goto err;
+  }
+  unsigned lgBigR = mont->N.width * BN_BITS2;
+  if (!bn_mod_exp_base_2_consttime(&mont->RR, lgBigR * 2, &mont->N, ctx) ||
+      !bn_resize_words(&mont->RR, mont->N.width)) {
+    goto err;
+  }
+  return mont;
+
+err:
+  BN_MONT_CTX_free(mont);
+  return NULL;
+}
+
+int BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, CRYPTO_MUTEX *lock,
+                           const BIGNUM *mod, BN_CTX *bn_ctx) {
+  CRYPTO_MUTEX_lock_read(lock);
+  BN_MONT_CTX *ctx = *pmont;
+  CRYPTO_MUTEX_unlock_read(lock);
+
+  if (ctx) {
+    return 1;
+  }
+
+  CRYPTO_MUTEX_lock_write(lock);
+  if (*pmont == NULL) {
+    *pmont = BN_MONT_CTX_new_for_modulus(mod, bn_ctx);
+  }
+  const int ok = *pmont != NULL;
+  CRYPTO_MUTEX_unlock_write(lock);
+  return ok;
+}
+
+int BN_to_montgomery(BIGNUM *ret, const BIGNUM *a, const BN_MONT_CTX *mont,
+                     BN_CTX *ctx) {
+  return BN_mod_mul_montgomery(ret, a, &mont->RR, mont, ctx);
+}
+
+static int bn_from_montgomery_in_place(BN_ULONG *r, size_t num_r, BN_ULONG *a,
+                                       size_t num_a, const BN_MONT_CTX *mont) {
+  const BN_ULONG *n = mont->N.d;
+  size_t num_n = mont->N.width;
+  if (num_r != num_n || num_a != 2 * num_n) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  // Add multiples of |n| to |r| until R = 2^(nl * BN_BITS2) divides it. On
+  // input, we had |r| < |n| * R, so now |r| < 2 * |n| * R. Note that |r|
+  // includes |carry| which is stored separately.
+  BN_ULONG n0 = mont->n0[0];
+  BN_ULONG carry = 0;
+  for (size_t i = 0; i < num_n; i++) {
+    BN_ULONG v = bn_mul_add_words(a + i, n, num_n, a[i] * n0);
+    v += carry + a[i + num_n];
+    carry |= (v != a[i + num_n]);
+    carry &= (v <= a[i + num_n]);
+    a[i + num_n] = v;
+  }
+
+  // Shift |num_n| words to divide by R. We have |a| < 2 * |n|. Note that |a|
+  // includes |carry| which is stored separately.
+  a += num_n;
+
+  // |a| thus requires at most one additional subtraction |n| to be reduced.
+  bn_reduce_once(r, a, carry, n, num_n);
+  return 1;
+}
+
+static int BN_from_montgomery_word(BIGNUM *ret, BIGNUM *r,
+                                   const BN_MONT_CTX *mont) {
+  if (r->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  const BIGNUM *n = &mont->N;
+  if (n->width == 0) {
+    ret->width = 0;
+    return 1;
+  }
+
+  int max = 2 * n->width;  // carry is stored separately
+  if (!bn_resize_words(r, max) ||
+      !bn_wexpand(ret, n->width)) {
+    return 0;
+  }
+
+  ret->width = n->width;
+  ret->neg = 0;
+  return bn_from_montgomery_in_place(ret->d, ret->width, r->d, r->width, mont);
+}
+
+int BN_from_montgomery(BIGNUM *r, const BIGNUM *a, const BN_MONT_CTX *mont,
+                       BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t;
+
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (t == NULL ||
+      !BN_copy(t, a)) {
+    goto err;
+  }
+
+  ret = BN_from_montgomery_word(r, t, mont);
+
+err:
+  BN_CTX_end(ctx);
+
+  return ret;
+}
+
+int bn_one_to_montgomery(BIGNUM *r, const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // If the high bit of |n| is set, R = 2^(width*BN_BITS2) < 2 * |n|, so we
+  // compute R - |n| rather than perform Montgomery reduction.
+  const BIGNUM *n = &mont->N;
+  if (n->width > 0 && (n->d[n->width - 1] >> (BN_BITS2 - 1)) != 0) {
+    if (!bn_wexpand(r, n->width)) {
+      return 0;
+    }
+    r->d[0] = 0 - n->d[0];
+    for (int i = 1; i < n->width; i++) {
+      r->d[i] = ~n->d[i];
+    }
+    r->width = n->width;
+    r->neg = 0;
+    return 1;
+  }
+
+  return BN_from_montgomery(r, &mont->RR, mont, ctx);
+}
+
+static int bn_mod_mul_montgomery_fallback(BIGNUM *r, const BIGNUM *a,
+                                          const BIGNUM *b,
+                                          const BN_MONT_CTX *mont,
+                                          BN_CTX *ctx) {
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  if (a == b) {
+    if (!bn_sqr_consttime(tmp, a, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!bn_mul_consttime(tmp, a, b, ctx)) {
+      goto err;
+    }
+  }
+
+  // reduce from aRR to aR
+  if (!BN_from_montgomery_word(r, tmp, mont)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mod_mul_montgomery(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  if (a->neg || b->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT)
+  // |bn_mul_mont| requires at least 128 bits of limbs, at least for x86.
+  int num = mont->N.width;
+  if (num >= (128 / BN_BITS2) &&
+      a->width == num &&
+      b->width == num) {
+    if (!bn_wexpand(r, num)) {
+      return 0;
+    }
+    if (!bn_mul_mont(r->d, a->d, b->d, mont->N.d, mont->n0, num)) {
+      // The check above ensures this won't happen.
+      assert(0);
+      OPENSSL_PUT_ERROR(BN, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+    r->neg = 0;
+    r->width = num;
+    return 1;
+  }
+#endif
+
+  return bn_mod_mul_montgomery_fallback(r, a, b, mont, ctx);
+}
+
+int bn_less_than_montgomery_R(const BIGNUM *bn, const BN_MONT_CTX *mont) {
+  return !BN_is_negative(bn) &&
+         bn_fits_in_words(bn, mont->N.width);
+}
+
+void bn_to_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                            const BN_MONT_CTX *mont) {
+  bn_mod_mul_montgomery_small(r, a, mont->RR.d, num, mont);
+}
+
+void bn_from_montgomery_small(BN_ULONG *r, const BN_ULONG *a, size_t num,
+                              const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  BN_ULONG tmp[BN_SMALL_MAX_WORDS * 2];
+  OPENSSL_memcpy(tmp, a, num * sizeof(BN_ULONG));
+  OPENSSL_memset(tmp + num, 0, num * sizeof(BN_ULONG));
+  if (!bn_from_montgomery_in_place(r, num, tmp, 2 * num, mont)) {
+    abort();
+  }
+  OPENSSL_cleanse(tmp, 2 * num * sizeof(BN_ULONG));
+}
+
+void bn_mod_mul_montgomery_small(BN_ULONG *r, const BN_ULONG *a,
+                                 const BN_ULONG *b, size_t num,
+                                 const BN_MONT_CTX *mont) {
+  if (num != (size_t)mont->N.width || num > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+
+#if defined(OPENSSL_BN_ASM_MONT)
+  // |bn_mul_mont| requires at least 128 bits of limbs, at least for x86.
+  if (num >= (128 / BN_BITS2)) {
+    if (!bn_mul_mont(r, a, b, mont->N.d, mont->n0, num)) {
+      abort();  // The check above ensures this won't happen.
+    }
+    return;
+  }
+#endif
+
+  // Compute the product.
+  BN_ULONG tmp[2 * BN_SMALL_MAX_WORDS];
+  if (a == b) {
+    bn_sqr_small(tmp, 2 * num, a, num);
+  } else {
+    bn_mul_small(tmp, 2 * num, a, num, b, num);
+  }
+
+  // Reduce.
+  if (!bn_from_montgomery_in_place(r, num, tmp, 2 * num, mont)) {
+    abort();
+  }
+  OPENSSL_cleanse(tmp, 2 * num * sizeof(BN_ULONG));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c
new file mode 100644
index 0000000..64d07ed
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c	
@@ -0,0 +1,186 @@
+/* Copyright 2016 Brian Smith.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+static uint64_t bn_neg_inv_mod_r_u64(uint64_t n);
+
+OPENSSL_STATIC_ASSERT(BN_MONT_CTX_N0_LIMBS == 1 || BN_MONT_CTX_N0_LIMBS == 2,
+                      "BN_MONT_CTX_N0_LIMBS value is invalid");
+OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) * BN_MONT_CTX_N0_LIMBS ==
+                          sizeof(uint64_t),
+                      "uint64_t is insufficient precision for n0");
+
+// LG_LITTLE_R is log_2(r).
+#define LG_LITTLE_R (BN_MONT_CTX_N0_LIMBS * BN_BITS2)
+
+uint64_t bn_mont_n0(const BIGNUM *n) {
+  // These conditions are checked by the caller, |BN_MONT_CTX_set| or
+  // |BN_MONT_CTX_new_consttime|.
+  assert(!BN_is_zero(n));
+  assert(!BN_is_negative(n));
+  assert(BN_is_odd(n));
+
+  // r == 2**(BN_MONT_CTX_N0_LIMBS * BN_BITS2) and LG_LITTLE_R == lg(r). This
+  // ensures that we can do integer division by |r| by simply ignoring
+  // |BN_MONT_CTX_N0_LIMBS| limbs. Similarly, we can calculate values modulo
+  // |r| by just looking at the lowest |BN_MONT_CTX_N0_LIMBS| limbs. This is
+  // what makes Montgomery multiplication efficient.
+  //
+  // As shown in Algorithm 1 of "Fast Prime Field Elliptic Curve Cryptography
+  // with 256 Bit Primes" by Shay Gueron and Vlad Krasnov, in the loop of a
+  // multi-limb Montgomery multiplication of |a * b (mod n)|, given the
+  // unreduced product |t == a * b|, we repeatedly calculate:
+  //
+  //    t1 := t % r         |t1| is |t|'s lowest limb (see previous paragraph).
+  //    t2 := t1*n0*n
+  //    t3 := t + t2
+  //    t := t3 / r         copy all limbs of |t3| except the lowest to |t|.
+  //
+  // In the last step, it would only make sense to ignore the lowest limb of
+  // |t3| if it were zero. The middle steps ensure that this is the case:
+  //
+  //                            t3 ==  0 (mod r)
+  //                        t + t2 ==  0 (mod r)
+  //                   t + t1*n0*n ==  0 (mod r)
+  //                       t1*n0*n == -t (mod r)
+  //                        t*n0*n == -t (mod r)
+  //                          n0*n == -1 (mod r)
+  //                            n0 == -1/n (mod r)
+  //
+  // Thus, in each iteration of the loop, we multiply by the constant factor
+  // |n0|, the negative inverse of n (mod r).
+
+  // n_mod_r = n % r. As explained above, this is done by taking the lowest
+  // |BN_MONT_CTX_N0_LIMBS| limbs of |n|.
+  uint64_t n_mod_r = n->d[0];
+#if BN_MONT_CTX_N0_LIMBS == 2
+  if (n->width > 1) {
+    n_mod_r |= (uint64_t)n->d[1] << BN_BITS2;
+  }
+#endif
+
+  return bn_neg_inv_mod_r_u64(n_mod_r);
+}
+
+// bn_neg_inv_r_mod_n_u64 calculates the -1/n mod r; i.e. it calculates |v|
+// such that u*r - v*n == 1. |r| is the constant defined in |bn_mont_n0|. |n|
+// must be odd.
+//
+// This is derived from |xbinGCD| in Henry S. Warren, Jr.'s "Montgomery
+// Multiplication" (http://www.hackersdelight.org/MontgomeryMultiplication.pdf).
+// It is very similar to the MODULAR-INVERSE function in Stephen R. Dussé's and
+// Burton S. Kaliski Jr.'s "A Cryptographic Library for the Motorola DSP56000"
+// (http://link.springer.com/chapter/10.1007%2F3-540-46877-3_21).
+//
+// This is inspired by Joppe W. Bos's "Constant Time Modular Inversion"
+// (http://www.joppebos.com/files/CTInversion.pdf) so that the inversion is
+// constant-time with respect to |n|. We assume uint64_t additions,
+// subtractions, shifts, and bitwise operations are all constant time, which
+// may be a large leap of faith on 32-bit targets. We avoid division and
+// multiplication, which tend to be the most problematic in terms of timing
+// leaks.
+//
+// Most GCD implementations return values such that |u*r + v*n == 1|, so the
+// caller would have to negate the resultant |v| for the purpose of Montgomery
+// multiplication. This implementation does the negation implicitly by doing
+// the computations as a difference instead of a sum.
+static uint64_t bn_neg_inv_mod_r_u64(uint64_t n) {
+  assert(n % 2 == 1);
+
+  // alpha == 2**(lg r - 1) == r / 2.
+  static const uint64_t alpha = UINT64_C(1) << (LG_LITTLE_R - 1);
+
+  const uint64_t beta = n;
+
+  uint64_t u = 1;
+  uint64_t v = 0;
+
+  // The invariant maintained from here on is:
+  // 2**(lg r - i) == u*2*alpha - v*beta.
+  for (size_t i = 0; i < LG_LITTLE_R; ++i) {
+#if BN_BITS2 == 64 && defined(BN_ULLONG)
+    assert((BN_ULLONG)(1) << (LG_LITTLE_R - i) ==
+           ((BN_ULLONG)u * 2 * alpha) - ((BN_ULLONG)v * beta));
+#endif
+
+    // Delete a common factor of 2 in u and v if |u| is even. Otherwise, set
+    // |u = (u + beta) / 2| and |v = (v / 2) + alpha|.
+
+    uint64_t u_is_odd = UINT64_C(0) - (u & 1);  // Either 0xff..ff or 0.
+
+    // The addition can overflow, so use Dietz's method for it.
+    //
+    // Dietz calculates (x+y)/2 by (x⊕y)>>1 + x&y. This is valid for all
+    // (unsigned) x and y, even when x+y overflows. Evidence for 32-bit values
+    // (embedded in 64 bits to so that overflow can be ignored):
+    //
+    // (declare-fun x () (_ BitVec 64))
+    // (declare-fun y () (_ BitVec 64))
+    // (assert (let (
+    //    (one (_ bv1 64))
+    //    (thirtyTwo (_ bv32 64)))
+    //    (and
+    //      (bvult x (bvshl one thirtyTwo))
+    //      (bvult y (bvshl one thirtyTwo))
+    //      (not (=
+    //        (bvadd (bvlshr (bvxor x y) one) (bvand x y))
+    //        (bvlshr (bvadd x y) one)))
+    // )))
+    // (check-sat)
+    uint64_t beta_if_u_is_odd = beta & u_is_odd;  // Either |beta| or 0.
+    u = ((u ^ beta_if_u_is_odd) >> 1) + (u & beta_if_u_is_odd);
+
+    uint64_t alpha_if_u_is_odd = alpha & u_is_odd;  // Either |alpha| or 0.
+    v = (v >> 1) + alpha_if_u_is_odd;
+  }
+
+  // The invariant now shows that u*r - v*n == 1 since r == 2 * alpha.
+#if BN_BITS2 == 64 && defined(BN_ULLONG)
+  assert(1 == ((BN_ULLONG)u * 2 * alpha) - ((BN_ULLONG)v * beta));
+#endif
+
+  return v;
+}
+
+int bn_mod_exp_base_2_consttime(BIGNUM *r, unsigned p, const BIGNUM *n,
+                                BN_CTX *ctx) {
+  assert(!BN_is_zero(n));
+  assert(!BN_is_negative(n));
+  assert(BN_is_odd(n));
+
+  BN_zero(r);
+
+  unsigned n_bits = BN_num_bits(n);
+  assert(n_bits != 0);
+  assert(p > n_bits);
+  if (n_bits == 1) {
+    return 1;
+  }
+
+  // Set |r| to the larger power of two smaller than |n|, then shift with
+  // reductions the rest of the way.
+  if (!BN_set_bit(r, n_bits - 1) ||
+      !bn_mod_lshift_consttime(r, r, p - (n_bits - 1), n, ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c.grpc_back
new file mode 100644
index 0000000..c80873f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/montgomery_inv.c.grpc_back	
@@ -0,0 +1,186 @@
+/* Copyright 2016 Brian Smith.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+static uint64_t bn_neg_inv_mod_r_u64(uint64_t n);
+
+OPENSSL_STATIC_ASSERT(BN_MONT_CTX_N0_LIMBS == 1 || BN_MONT_CTX_N0_LIMBS == 2,
+                      "BN_MONT_CTX_N0_LIMBS value is invalid");
+OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) * BN_MONT_CTX_N0_LIMBS ==
+                          sizeof(uint64_t),
+                      "uint64_t is insufficient precision for n0");
+
+// LG_LITTLE_R is log_2(r).
+#define LG_LITTLE_R (BN_MONT_CTX_N0_LIMBS * BN_BITS2)
+
+uint64_t bn_mont_n0(const BIGNUM *n) {
+  // These conditions are checked by the caller, |BN_MONT_CTX_set| or
+  // |BN_MONT_CTX_new_consttime|.
+  assert(!BN_is_zero(n));
+  assert(!BN_is_negative(n));
+  assert(BN_is_odd(n));
+
+  // r == 2**(BN_MONT_CTX_N0_LIMBS * BN_BITS2) and LG_LITTLE_R == lg(r). This
+  // ensures that we can do integer division by |r| by simply ignoring
+  // |BN_MONT_CTX_N0_LIMBS| limbs. Similarly, we can calculate values modulo
+  // |r| by just looking at the lowest |BN_MONT_CTX_N0_LIMBS| limbs. This is
+  // what makes Montgomery multiplication efficient.
+  //
+  // As shown in Algorithm 1 of "Fast Prime Field Elliptic Curve Cryptography
+  // with 256 Bit Primes" by Shay Gueron and Vlad Krasnov, in the loop of a
+  // multi-limb Montgomery multiplication of |a * b (mod n)|, given the
+  // unreduced product |t == a * b|, we repeatedly calculate:
+  //
+  //    t1 := t % r         |t1| is |t|'s lowest limb (see previous paragraph).
+  //    t2 := t1*n0*n
+  //    t3 := t + t2
+  //    t := t3 / r         copy all limbs of |t3| except the lowest to |t|.
+  //
+  // In the last step, it would only make sense to ignore the lowest limb of
+  // |t3| if it were zero. The middle steps ensure that this is the case:
+  //
+  //                            t3 ==  0 (mod r)
+  //                        t + t2 ==  0 (mod r)
+  //                   t + t1*n0*n ==  0 (mod r)
+  //                       t1*n0*n == -t (mod r)
+  //                        t*n0*n == -t (mod r)
+  //                          n0*n == -1 (mod r)
+  //                            n0 == -1/n (mod r)
+  //
+  // Thus, in each iteration of the loop, we multiply by the constant factor
+  // |n0|, the negative inverse of n (mod r).
+
+  // n_mod_r = n % r. As explained above, this is done by taking the lowest
+  // |BN_MONT_CTX_N0_LIMBS| limbs of |n|.
+  uint64_t n_mod_r = n->d[0];
+#if BN_MONT_CTX_N0_LIMBS == 2
+  if (n->width > 1) {
+    n_mod_r |= (uint64_t)n->d[1] << BN_BITS2;
+  }
+#endif
+
+  return bn_neg_inv_mod_r_u64(n_mod_r);
+}
+
+// bn_neg_inv_r_mod_n_u64 calculates the -1/n mod r; i.e. it calculates |v|
+// such that u*r - v*n == 1. |r| is the constant defined in |bn_mont_n0|. |n|
+// must be odd.
+//
+// This is derived from |xbinGCD| in Henry S. Warren, Jr.'s "Montgomery
+// Multiplication" (http://www.hackersdelight.org/MontgomeryMultiplication.pdf).
+// It is very similar to the MODULAR-INVERSE function in Stephen R. Dussé's and
+// Burton S. Kaliski Jr.'s "A Cryptographic Library for the Motorola DSP56000"
+// (http://link.springer.com/chapter/10.1007%2F3-540-46877-3_21).
+//
+// This is inspired by Joppe W. Bos's "Constant Time Modular Inversion"
+// (http://www.joppebos.com/files/CTInversion.pdf) so that the inversion is
+// constant-time with respect to |n|. We assume uint64_t additions,
+// subtractions, shifts, and bitwise operations are all constant time, which
+// may be a large leap of faith on 32-bit targets. We avoid division and
+// multiplication, which tend to be the most problematic in terms of timing
+// leaks.
+//
+// Most GCD implementations return values such that |u*r + v*n == 1|, so the
+// caller would have to negate the resultant |v| for the purpose of Montgomery
+// multiplication. This implementation does the negation implicitly by doing
+// the computations as a difference instead of a sum.
+static uint64_t bn_neg_inv_mod_r_u64(uint64_t n) {
+  assert(n % 2 == 1);
+
+  // alpha == 2**(lg r - 1) == r / 2.
+  static const uint64_t alpha = UINT64_C(1) << (LG_LITTLE_R - 1);
+
+  const uint64_t beta = n;
+
+  uint64_t u = 1;
+  uint64_t v = 0;
+
+  // The invariant maintained from here on is:
+  // 2**(lg r - i) == u*2*alpha - v*beta.
+  for (size_t i = 0; i < LG_LITTLE_R; ++i) {
+#if BN_BITS2 == 64 && defined(BN_ULLONG)
+    assert((BN_ULLONG)(1) << (LG_LITTLE_R - i) ==
+           ((BN_ULLONG)u * 2 * alpha) - ((BN_ULLONG)v * beta));
+#endif
+
+    // Delete a common factor of 2 in u and v if |u| is even. Otherwise, set
+    // |u = (u + beta) / 2| and |v = (v / 2) + alpha|.
+
+    uint64_t u_is_odd = UINT64_C(0) - (u & 1);  // Either 0xff..ff or 0.
+
+    // The addition can overflow, so use Dietz's method for it.
+    //
+    // Dietz calculates (x+y)/2 by (x⊕y)>>1 + x&y. This is valid for all
+    // (unsigned) x and y, even when x+y overflows. Evidence for 32-bit values
+    // (embedded in 64 bits to so that overflow can be ignored):
+    //
+    // (declare-fun x () (_ BitVec 64))
+    // (declare-fun y () (_ BitVec 64))
+    // (assert (let (
+    //    (one (_ bv1 64))
+    //    (thirtyTwo (_ bv32 64)))
+    //    (and
+    //      (bvult x (bvshl one thirtyTwo))
+    //      (bvult y (bvshl one thirtyTwo))
+    //      (not (=
+    //        (bvadd (bvlshr (bvxor x y) one) (bvand x y))
+    //        (bvlshr (bvadd x y) one)))
+    // )))
+    // (check-sat)
+    uint64_t beta_if_u_is_odd = beta & u_is_odd;  // Either |beta| or 0.
+    u = ((u ^ beta_if_u_is_odd) >> 1) + (u & beta_if_u_is_odd);
+
+    uint64_t alpha_if_u_is_odd = alpha & u_is_odd;  // Either |alpha| or 0.
+    v = (v >> 1) + alpha_if_u_is_odd;
+  }
+
+  // The invariant now shows that u*r - v*n == 1 since r == 2 * alpha.
+#if BN_BITS2 == 64 && defined(BN_ULLONG)
+  assert(1 == ((BN_ULLONG)u * 2 * alpha) - ((BN_ULLONG)v * beta));
+#endif
+
+  return v;
+}
+
+int bn_mod_exp_base_2_consttime(BIGNUM *r, unsigned p, const BIGNUM *n,
+                                BN_CTX *ctx) {
+  assert(!BN_is_zero(n));
+  assert(!BN_is_negative(n));
+  assert(BN_is_odd(n));
+
+  BN_zero(r);
+
+  unsigned n_bits = BN_num_bits(n);
+  assert(n_bits != 0);
+  assert(p > n_bits);
+  if (n_bits == 1) {
+    return 1;
+  }
+
+  // Set |r| to the larger power of two smaller than |n|, then shift with
+  // reductions the rest of the way.
+  if (!BN_set_bit(r, n_bits - 1) ||
+      !bn_mod_lshift_consttime(r, r, p - (n_bits - 1), n, ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c
new file mode 100644
index 0000000..7050c8d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c	
@@ -0,0 +1,873 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define BN_MUL_RECURSIVE_SIZE_NORMAL 16
+#define BN_SQR_RECURSIVE_SIZE_NORMAL BN_MUL_RECURSIVE_SIZE_NORMAL
+
+
+static void bn_abs_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                             size_t num, BN_ULONG *tmp) {
+  BN_ULONG borrow = bn_sub_words(tmp, a, b, num);
+  bn_sub_words(r, b, a, num);
+  bn_select_words(r, 0 - borrow, r /* tmp < 0 */, tmp /* tmp >= 0 */, num);
+}
+
+static void bn_mul_normal(BN_ULONG *r, const BN_ULONG *a, size_t na,
+                          const BN_ULONG *b, size_t nb) {
+  if (na < nb) {
+    size_t itmp = na;
+    na = nb;
+    nb = itmp;
+    const BN_ULONG *ltmp = a;
+    a = b;
+    b = ltmp;
+  }
+  BN_ULONG *rr = &(r[na]);
+  if (nb == 0) {
+    OPENSSL_memset(r, 0, na * sizeof(BN_ULONG));
+    return;
+  }
+  rr[0] = bn_mul_words(r, a, na, b[0]);
+
+  for (;;) {
+    if (--nb == 0) {
+      return;
+    }
+    rr[1] = bn_mul_add_words(&(r[1]), a, na, b[1]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[2] = bn_mul_add_words(&(r[2]), a, na, b[2]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[3] = bn_mul_add_words(&(r[3]), a, na, b[3]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[4] = bn_mul_add_words(&(r[4]), a, na, b[4]);
+    rr += 4;
+    r += 4;
+    b += 4;
+  }
+}
+
+#if !defined(OPENSSL_X86) || defined(OPENSSL_NO_ASM)
+// Here follows specialised variants of bn_add_words() and bn_sub_words(). They
+// have the property performing operations on arrays of different sizes. The
+// sizes of those arrays is expressed through cl, which is the common length (
+// basicall, min(len(a),len(b)) ), and dl, which is the delta between the two
+// lengths, calculated as len(a)-len(b). All lengths are the number of
+// BN_ULONGs...  For the operations that require a result array as parameter,
+// it must have the length cl+abs(dl). These functions should probably end up
+// in bn_asm.c as soon as there are assembler counterparts for the systems that
+// use assembler files.
+
+static BN_ULONG bn_sub_part_words(BN_ULONG *r, const BN_ULONG *a,
+                                  const BN_ULONG *b, int cl, int dl) {
+  BN_ULONG c, t;
+
+  assert(cl >= 0);
+  c = bn_sub_words(r, a, b, cl);
+
+  if (dl == 0) {
+    return c;
+  }
+
+  r += cl;
+  a += cl;
+  b += cl;
+
+  if (dl < 0) {
+    for (;;) {
+      t = b[0];
+      r[0] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[1];
+      r[1] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[2];
+      r[2] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[3];
+      r[3] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      b += 4;
+      r += 4;
+    }
+  } else {
+    int save_dl = dl;
+    while (c) {
+      t = a[0];
+      r[0] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[1];
+      r[1] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[2];
+      r[2] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[3];
+      r[3] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      save_dl = dl;
+      a += 4;
+      r += 4;
+    }
+    if (dl > 0) {
+      if (save_dl > dl) {
+        switch (save_dl - dl) {
+          case 1:
+            r[1] = a[1];
+            if (--dl <= 0) {
+              break;
+            }
+            OPENSSL_FALLTHROUGH;
+          case 2:
+            r[2] = a[2];
+            if (--dl <= 0) {
+              break;
+            }
+            OPENSSL_FALLTHROUGH;
+          case 3:
+            r[3] = a[3];
+            if (--dl <= 0) {
+              break;
+            }
+        }
+        a += 4;
+        r += 4;
+      }
+    }
+
+    if (dl > 0) {
+      for (;;) {
+        r[0] = a[0];
+        if (--dl <= 0) {
+          break;
+        }
+        r[1] = a[1];
+        if (--dl <= 0) {
+          break;
+        }
+        r[2] = a[2];
+        if (--dl <= 0) {
+          break;
+        }
+        r[3] = a[3];
+        if (--dl <= 0) {
+          break;
+        }
+
+        a += 4;
+        r += 4;
+      }
+    }
+  }
+
+  return c;
+}
+#else
+// On other platforms the function is defined in asm.
+BN_ULONG bn_sub_part_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                           int cl, int dl);
+#endif
+
+// bn_abs_sub_part_words computes |r| = |a| - |b|, storing the absolute value
+// and returning a mask of all ones if the result was negative and all zeros if
+// the result was positive. |cl| and |dl| follow the |bn_sub_part_words| calling
+// convention.
+//
+// TODO(davidben): Make this take |size_t|. The |cl| + |dl| calling convention
+// is confusing. The trouble is 32-bit x86 implements |bn_sub_part_words| in
+// assembly, but we can probably just delete it?
+static BN_ULONG bn_abs_sub_part_words(BN_ULONG *r, const BN_ULONG *a,
+                                      const BN_ULONG *b, int cl, int dl,
+                                      BN_ULONG *tmp) {
+  BN_ULONG borrow = bn_sub_part_words(tmp, a, b, cl, dl);
+  bn_sub_part_words(r, b, a, cl, -dl);
+  int r_len = cl + (dl < 0 ? -dl : dl);
+  borrow = 0 - borrow;
+  bn_select_words(r, borrow, r /* tmp < 0 */, tmp /* tmp >= 0 */, r_len);
+  return borrow;
+}
+
+int bn_abs_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         BN_CTX *ctx) {
+  int cl = a->width < b->width ? a->width : b->width;
+  int dl = a->width - b->width;
+  int r_len = a->width < b->width ? b->width : a->width;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ok = tmp != NULL &&
+           bn_wexpand(r, r_len) &&
+           bn_wexpand(tmp, r_len);
+  if (ok) {
+    bn_abs_sub_part_words(r->d, a->d, b->d, cl, dl, tmp->d);
+    r->width = r_len;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+// Karatsuba recursive multiplication algorithm
+// (cf. Knuth, The Art of Computer Programming, Vol. 2)
+
+// bn_mul_recursive sets |r| to |a| * |b|, using |t| as scratch space. |r| has
+// length 2*|n2|, |a| has length |n2| + |dna|, |b| has length |n2| + |dnb|, and
+// |t| has length 4*|n2|. |n2| must be a power of two. Finally, we must have
+// -|BN_MUL_RECURSIVE_SIZE_NORMAL|/2 <= |dna| <= 0 and
+// -|BN_MUL_RECURSIVE_SIZE_NORMAL|/2 <= |dnb| <= 0.
+//
+// TODO(davidben): Simplify and |size_t| the calling convention around lengths
+// here.
+static void bn_mul_recursive(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                             int n2, int dna, int dnb, BN_ULONG *t) {
+  // |n2| is a power of two.
+  assert(n2 != 0 && (n2 & (n2 - 1)) == 0);
+  // Check |dna| and |dnb| are in range.
+  assert(-BN_MUL_RECURSIVE_SIZE_NORMAL/2 <= dna && dna <= 0);
+  assert(-BN_MUL_RECURSIVE_SIZE_NORMAL/2 <= dnb && dnb <= 0);
+
+  // Only call bn_mul_comba 8 if n2 == 8 and the
+  // two arrays are complete [steve]
+  if (n2 == 8 && dna == 0 && dnb == 0) {
+    bn_mul_comba8(r, a, b);
+    return;
+  }
+
+  // Else do normal multiply
+  if (n2 < BN_MUL_RECURSIVE_SIZE_NORMAL) {
+    bn_mul_normal(r, a, n2 + dna, b, n2 + dnb);
+    if (dna + dnb < 0) {
+      OPENSSL_memset(&r[2 * n2 + dna + dnb], 0,
+                     sizeof(BN_ULONG) * -(dna + dnb));
+    }
+    return;
+  }
+
+  // Split |a| and |b| into a0,a1 and b0,b1, where a0 and b0 have size |n|.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0*b0 to r0,r1, a0*a1+b0*b1
+  // to r1,r2, and a1*b1 to r2,r3. The middle term we will compute as:
+  //
+  //   a0*a1 + b0*b1 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0
+  //
+  // Note that we know |n| >= |BN_MUL_RECURSIVE_SIZE_NORMAL|/2 above, so
+  // |tna| and |tnb| are non-negative.
+  int n = n2 / 2, tna = n + dna, tnb = n + dnb;
+
+  // t0 = a0 - a1 and t1 = b1 - b0. The result will be multiplied, so we XOR
+  // their sign masks, giving the sign of (a0 - a1)*(b1 - b0). t0 and t1
+  // themselves store the absolute value.
+  BN_ULONG neg = bn_abs_sub_part_words(t, a, &a[n], tna, n - tna, &t[n2]);
+  neg ^= bn_abs_sub_part_words(&t[n], &b[n], b, tnb, tnb - n, &t[n2]);
+
+  // Compute:
+  // t2,t3 = t0 * t1 = |(a0 - a1)*(b1 - b0)|
+  // r0,r1 = a0 * b0
+  // r2,r3 = a1 * b1
+  if (n == 4 && dna == 0 && dnb == 0) {
+    bn_mul_comba4(&t[n2], t, &t[n]);
+
+    bn_mul_comba4(r, a, b);
+    bn_mul_comba4(&r[n2], &a[n], &b[n]);
+  } else if (n == 8 && dna == 0 && dnb == 0) {
+    bn_mul_comba8(&t[n2], t, &t[n]);
+
+    bn_mul_comba8(r, a, b);
+    bn_mul_comba8(&r[n2], &a[n], &b[n]);
+  } else {
+    BN_ULONG *p = &t[n2 * 2];
+    bn_mul_recursive(&t[n2], t, &t[n], n, 0, 0, p);
+    bn_mul_recursive(r, a, b, n, 0, 0, p);
+    bn_mul_recursive(&r[n2], &a[n], &b[n], n, dna, dnb, p);
+  }
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0*b0 + a1*b1
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+
+  // t2,t3,c = t0,t1,c + neg*t2,t3 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0.
+  // The second term is stored as the absolute value, so we do this with a
+  // constant-time select.
+  BN_ULONG c_neg = c - bn_sub_words(&t[n2 * 2], t, &t[n2], n2);
+  BN_ULONG c_pos = c + bn_add_words(&t[n2], t, &t[n2], n2);
+  bn_select_words(&t[n2], neg, &t[n2 * 2], &t[n2], n2);
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  c = constant_time_select_w(neg, c_neg, c_pos);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (int i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The product should fit without carries.
+  assert(c == 0);
+}
+
+// bn_mul_part_recursive sets |r| to |a| * |b|, using |t| as scratch space. |r|
+// has length 4*|n|, |a| has length |n| + |tna|, |b| has length |n| + |tnb|, and
+// |t| has length 8*|n|. |n| must be a power of two. Additionally, we must have
+// 0 <= tna < n and 0 <= tnb < n, and |tna| and |tnb| must differ by at most
+// one.
+//
+// TODO(davidben): Make this take |size_t| and perhaps the actual lengths of |a|
+// and |b|.
+static void bn_mul_part_recursive(BN_ULONG *r, const BN_ULONG *a,
+                                  const BN_ULONG *b, int n, int tna, int tnb,
+                                  BN_ULONG *t) {
+  // |n| is a power of two.
+  assert(n != 0 && (n & (n - 1)) == 0);
+  // Check |tna| and |tnb| are in range.
+  assert(0 <= tna && tna < n);
+  assert(0 <= tnb && tnb < n);
+  assert(-1 <= tna - tnb && tna - tnb <= 1);
+
+  int n2 = n * 2;
+  if (n < 8) {
+    bn_mul_normal(r, a, n + tna, b, n + tnb);
+    OPENSSL_memset(r + n2 + tna + tnb, 0, n2 - tna - tnb);
+    return;
+  }
+
+  // Split |a| and |b| into a0,a1 and b0,b1, where a0 and b0 have size |n|. |a1|
+  // and |b1| have size |tna| and |tnb|, respectively.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0*b0 to r0,r1, a0*a1+b0*b1
+  // to r1,r2, and a1*b1 to r2,r3. The middle term we will compute as:
+  //
+  //   a0*a1 + b0*b1 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0
+
+  // t0 = a0 - a1 and t1 = b1 - b0. The result will be multiplied, so we XOR
+  // their sign masks, giving the sign of (a0 - a1)*(b1 - b0). t0 and t1
+  // themselves store the absolute value.
+  BN_ULONG neg = bn_abs_sub_part_words(t, a, &a[n], tna, n - tna, &t[n2]);
+  neg ^= bn_abs_sub_part_words(&t[n], &b[n], b, tnb, tnb - n, &t[n2]);
+
+  // Compute:
+  // t2,t3 = t0 * t1 = |(a0 - a1)*(b1 - b0)|
+  // r0,r1 = a0 * b0
+  // r2,r3 = a1 * b1
+  if (n == 8) {
+    bn_mul_comba8(&t[n2], t, &t[n]);
+    bn_mul_comba8(r, a, b);
+
+    bn_mul_normal(&r[n2], &a[n], tna, &b[n], tnb);
+    // |bn_mul_normal| only writes |tna| + |tna| words. Zero the rest.
+    OPENSSL_memset(&r[n2 + tna + tnb], 0, sizeof(BN_ULONG) * (n2 - tna - tnb));
+  } else {
+    BN_ULONG *p = &t[n2 * 2];
+    bn_mul_recursive(&t[n2], t, &t[n], n, 0, 0, p);
+    bn_mul_recursive(r, a, b, n, 0, 0, p);
+
+    OPENSSL_memset(&r[n2], 0, sizeof(BN_ULONG) * n2);
+    if (tna < BN_MUL_RECURSIVE_SIZE_NORMAL &&
+        tnb < BN_MUL_RECURSIVE_SIZE_NORMAL) {
+      bn_mul_normal(&r[n2], &a[n], tna, &b[n], tnb);
+    } else {
+      int i = n;
+      for (;;) {
+        i /= 2;
+        if (i < tna || i < tnb) {
+          // E.g., n == 16, i == 8 and tna == 11. |tna| and |tnb| are within one
+          // of each other, so if |tna| is larger and tna > i, then we know
+          // tnb >= i, and this call is valid.
+          bn_mul_part_recursive(&r[n2], &a[n], &b[n], i, tna - i, tnb - i, p);
+          break;
+        }
+        if (i == tna || i == tnb) {
+          // If there is only a bottom half to the number, just do it. We know
+          // the larger of |tna - i| and |tnb - i| is zero. The other is zero or
+          // -1 by because of |tna| and |tnb| differ by at most one.
+          bn_mul_recursive(&r[n2], &a[n], &b[n], i, tna - i, tnb - i, p);
+          break;
+        }
+
+        // This loop will eventually terminate when |i| falls below
+        // |BN_MUL_RECURSIVE_SIZE_NORMAL| because we know one of |tna| and |tnb|
+        // exceeds that.
+      }
+    }
+  }
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0*b0 + a1*b1
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+
+  // t2,t3,c = t0,t1,c + neg*t2,t3 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0.
+  // The second term is stored as the absolute value, so we do this with a
+  // constant-time select.
+  BN_ULONG c_neg = c - bn_sub_words(&t[n2 * 2], t, &t[n2], n2);
+  BN_ULONG c_pos = c + bn_add_words(&t[n2], t, &t[n2], n2);
+  bn_select_words(&t[n2], neg, &t[n2 * 2], &t[n2], n2);
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  c = constant_time_select_w(neg, c_neg, c_pos);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (int i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The product should fit without carries.
+  assert(c == 0);
+}
+
+// bn_mul_impl implements |BN_mul| and |bn_mul_consttime|. Note this function
+// breaks |BIGNUM| invariants and may return a negative zero. This is handled by
+// the callers.
+static int bn_mul_impl(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                       BN_CTX *ctx) {
+  int al = a->width;
+  int bl = b->width;
+  if (al == 0 || bl == 0) {
+    BN_zero(r);
+    return 1;
+  }
+
+  int ret = 0;
+  BIGNUM *rr;
+  BN_CTX_start(ctx);
+  if (r == a || r == b) {
+    rr = BN_CTX_get(ctx);
+    if (rr == NULL) {
+      goto err;
+    }
+  } else {
+    rr = r;
+  }
+  rr->neg = a->neg ^ b->neg;
+
+  int i = al - bl;
+  if (i == 0) {
+    if (al == 8) {
+      if (!bn_wexpand(rr, 16)) {
+        goto err;
+      }
+      rr->width = 16;
+      bn_mul_comba8(rr->d, a->d, b->d);
+      goto end;
+    }
+  }
+
+  int top = al + bl;
+  static const int kMulNormalSize = 16;
+  if (al >= kMulNormalSize && bl >= kMulNormalSize) {
+    if (-1 <= i && i <= 1) {
+      // Find the larger power of two less than or equal to the larger length.
+      int j;
+      if (i >= 0) {
+        j = BN_num_bits_word((BN_ULONG)al);
+      } else {
+        j = BN_num_bits_word((BN_ULONG)bl);
+      }
+      j = 1 << (j - 1);
+      assert(j <= al || j <= bl);
+      BIGNUM *t = BN_CTX_get(ctx);
+      if (t == NULL) {
+        goto err;
+      }
+      if (al > j || bl > j) {
+        // We know |al| and |bl| are at most one from each other, so if al > j,
+        // bl >= j, and vice versa. Thus we can use |bn_mul_part_recursive|.
+        assert(al >= j && bl >= j);
+        if (!bn_wexpand(t, j * 8) ||
+            !bn_wexpand(rr, j * 4)) {
+          goto err;
+        }
+        bn_mul_part_recursive(rr->d, a->d, b->d, j, al - j, bl - j, t->d);
+      } else {
+        // al <= j && bl <= j. Additionally, we know j <= al or j <= bl, so one
+        // of al - j or bl - j is zero. The other, by the bound on |i| above, is
+        // zero or -1. Thus, we can use |bn_mul_recursive|.
+        if (!bn_wexpand(t, j * 4) ||
+            !bn_wexpand(rr, j * 2)) {
+          goto err;
+        }
+        bn_mul_recursive(rr->d, a->d, b->d, j, al - j, bl - j, t->d);
+      }
+      rr->width = top;
+      goto end;
+    }
+  }
+
+  if (!bn_wexpand(rr, top)) {
+    goto err;
+  }
+  rr->width = top;
+  bn_mul_normal(rr->d, a->d, al, b->d, bl);
+
+end:
+  if (r != rr && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  if (!bn_mul_impl(r, a, b, ctx)) {
+    return 0;
+  }
+
+  // This additionally fixes any negative zeros created by |bn_mul_impl|.
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int bn_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  // Prevent negative zeros.
+  if (a->neg || b->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  return bn_mul_impl(r, a, b, ctx);
+}
+
+void bn_mul_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a,
+                  const BN_ULONG *b, size_t num_b) {
+  if (num_r != num_a + num_b) {
+    abort();
+  }
+  // TODO(davidben): Should this call |bn_mul_comba4| too? |BN_mul| does not
+  // hit that code.
+  if (num_a == 8 && num_b == 8) {
+    bn_mul_comba8(r, a, b);
+  } else {
+    bn_mul_normal(r, a, num_a, b, num_b);
+  }
+}
+
+// tmp must have 2*n words
+static void bn_sqr_normal(BN_ULONG *r, const BN_ULONG *a, size_t n,
+                          BN_ULONG *tmp) {
+  if (n == 0) {
+    return;
+  }
+
+  size_t max = n * 2;
+  const BN_ULONG *ap = a;
+  BN_ULONG *rp = r;
+  rp[0] = rp[max - 1] = 0;
+  rp++;
+
+  // Compute the contribution of a[i] * a[j] for all i < j.
+  if (n > 1) {
+    ap++;
+    rp[n - 1] = bn_mul_words(rp, ap, n - 1, ap[-1]);
+    rp += 2;
+  }
+  if (n > 2) {
+    for (size_t i = n - 2; i > 0; i--) {
+      ap++;
+      rp[i] = bn_mul_add_words(rp, ap, i, ap[-1]);
+      rp += 2;
+    }
+  }
+
+  // The final result fits in |max| words, so none of the following operations
+  // will overflow.
+
+  // Double |r|, giving the contribution of a[i] * a[j] for all i != j.
+  bn_add_words(r, r, r, max);
+
+  // Add in the contribution of a[i] * a[i] for all i.
+  bn_sqr_words(tmp, a, n);
+  bn_add_words(r, r, tmp, max);
+}
+
+// bn_sqr_recursive sets |r| to |a|^2, using |t| as scratch space. |r| has
+// length 2*|n2|, |a| has length |n2|, and |t| has length 4*|n2|. |n2| must be
+// a power of two.
+static void bn_sqr_recursive(BN_ULONG *r, const BN_ULONG *a, size_t n2,
+                             BN_ULONG *t) {
+  // |n2| is a power of two.
+  assert(n2 != 0 && (n2 & (n2 - 1)) == 0);
+
+  if (n2 == 4) {
+    bn_sqr_comba4(r, a);
+    return;
+  }
+  if (n2 == 8) {
+    bn_sqr_comba8(r, a);
+    return;
+  }
+  if (n2 < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+    bn_sqr_normal(r, a, n2, t);
+    return;
+  }
+
+  // Split |a| into a0,a1, each of size |n|.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0^2 to r0,r1, 2*a0*a1 to
+  // r1,r2, and a1^2 to r2,r3.
+  size_t n = n2 / 2;
+  BN_ULONG *t_recursive = &t[n2 * 2];
+
+  // t0 = |a0 - a1|.
+  bn_abs_sub_words(t, a, &a[n], n, &t[n]);
+  // t2,t3 = t0^2 = |a0 - a1|^2 = a0^2 - 2*a0*a1 + a1^2
+  bn_sqr_recursive(&t[n2], t, n, t_recursive);
+
+  // r0,r1 = a0^2
+  bn_sqr_recursive(r, a, n, t_recursive);
+
+  // r2,r3 = a1^2
+  bn_sqr_recursive(&r[n2], &a[n], n, t_recursive);
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0^2 + a1^2
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+  // t2,t3,c = t0,t1,c - t2,t3 = 2*a0*a1
+  c -= bn_sub_words(&t[n2], t, &t[n2], n2);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (size_t i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The square should fit without carries.
+  assert(c == 0);
+}
+
+int BN_mul_word(BIGNUM *bn, BN_ULONG w) {
+  if (!bn->width) {
+    return 1;
+  }
+
+  if (w == 0) {
+    BN_zero(bn);
+    return 1;
+  }
+
+  BN_ULONG ll = bn_mul_words(bn->d, bn->d, bn->width, w);
+  if (ll) {
+    if (!bn_wexpand(bn, bn->width + 1)) {
+      return 0;
+    }
+    bn->d[bn->width++] = ll;
+  }
+
+  return 1;
+}
+
+int bn_sqr_consttime(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx) {
+  int al = a->width;
+  if (al <= 0) {
+    r->width = 0;
+    r->neg = 0;
+    return 1;
+  }
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *rr = (a != r) ? r : BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (!rr || !tmp) {
+    goto err;
+  }
+
+  int max = 2 * al;  // Non-zero (from above)
+  if (!bn_wexpand(rr, max)) {
+    goto err;
+  }
+
+  if (al == 4) {
+    bn_sqr_comba4(rr->d, a->d);
+  } else if (al == 8) {
+    bn_sqr_comba8(rr->d, a->d);
+  } else {
+    if (al < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+      BN_ULONG t[BN_SQR_RECURSIVE_SIZE_NORMAL * 2];
+      bn_sqr_normal(rr->d, a->d, al, t);
+    } else {
+      // If |al| is a power of two, we can use |bn_sqr_recursive|.
+      if (al != 0 && (al & (al - 1)) == 0) {
+        if (!bn_wexpand(tmp, al * 4)) {
+          goto err;
+        }
+        bn_sqr_recursive(rr->d, a->d, al, tmp->d);
+      } else {
+        if (!bn_wexpand(tmp, max)) {
+          goto err;
+        }
+        bn_sqr_normal(rr->d, a->d, al, tmp->d);
+      }
+    }
+  }
+
+  rr->neg = 0;
+  rr->width = max;
+
+  if (rr != r && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx) {
+  if (!bn_sqr_consttime(r, a, ctx)) {
+    return 0;
+  }
+
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+void bn_sqr_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a) {
+  if (num_r != 2 * num_a || num_a > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  if (num_a == 4) {
+    bn_sqr_comba4(r, a);
+  } else if (num_a == 8) {
+    bn_sqr_comba8(r, a);
+  } else {
+    BN_ULONG tmp[2 * BN_SMALL_MAX_WORDS];
+    bn_sqr_normal(r, a, num_a, tmp);
+    OPENSSL_cleanse(tmp, 2 * num_a * sizeof(BN_ULONG));
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c.grpc_back
new file mode 100644
index 0000000..640d8cd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/mul.c.grpc_back	
@@ -0,0 +1,873 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define BN_MUL_RECURSIVE_SIZE_NORMAL 16
+#define BN_SQR_RECURSIVE_SIZE_NORMAL BN_MUL_RECURSIVE_SIZE_NORMAL
+
+
+static void bn_abs_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                             size_t num, BN_ULONG *tmp) {
+  BN_ULONG borrow = bn_sub_words(tmp, a, b, num);
+  bn_sub_words(r, b, a, num);
+  bn_select_words(r, 0 - borrow, r /* tmp < 0 */, tmp /* tmp >= 0 */, num);
+}
+
+static void bn_mul_normal(BN_ULONG *r, const BN_ULONG *a, size_t na,
+                          const BN_ULONG *b, size_t nb) {
+  if (na < nb) {
+    size_t itmp = na;
+    na = nb;
+    nb = itmp;
+    const BN_ULONG *ltmp = a;
+    a = b;
+    b = ltmp;
+  }
+  BN_ULONG *rr = &(r[na]);
+  if (nb == 0) {
+    OPENSSL_memset(r, 0, na * sizeof(BN_ULONG));
+    return;
+  }
+  rr[0] = bn_mul_words(r, a, na, b[0]);
+
+  for (;;) {
+    if (--nb == 0) {
+      return;
+    }
+    rr[1] = bn_mul_add_words(&(r[1]), a, na, b[1]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[2] = bn_mul_add_words(&(r[2]), a, na, b[2]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[3] = bn_mul_add_words(&(r[3]), a, na, b[3]);
+    if (--nb == 0) {
+      return;
+    }
+    rr[4] = bn_mul_add_words(&(r[4]), a, na, b[4]);
+    rr += 4;
+    r += 4;
+    b += 4;
+  }
+}
+
+#if !defined(OPENSSL_X86) || defined(OPENSSL_NO_ASM)
+// Here follows specialised variants of bn_add_words() and bn_sub_words(). They
+// have the property performing operations on arrays of different sizes. The
+// sizes of those arrays is expressed through cl, which is the common length (
+// basicall, min(len(a),len(b)) ), and dl, which is the delta between the two
+// lengths, calculated as len(a)-len(b). All lengths are the number of
+// BN_ULONGs...  For the operations that require a result array as parameter,
+// it must have the length cl+abs(dl). These functions should probably end up
+// in bn_asm.c as soon as there are assembler counterparts for the systems that
+// use assembler files.
+
+static BN_ULONG bn_sub_part_words(BN_ULONG *r, const BN_ULONG *a,
+                                  const BN_ULONG *b, int cl, int dl) {
+  BN_ULONG c, t;
+
+  assert(cl >= 0);
+  c = bn_sub_words(r, a, b, cl);
+
+  if (dl == 0) {
+    return c;
+  }
+
+  r += cl;
+  a += cl;
+  b += cl;
+
+  if (dl < 0) {
+    for (;;) {
+      t = b[0];
+      r[0] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[1];
+      r[1] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[2];
+      r[2] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      t = b[3];
+      r[3] = 0 - t - c;
+      if (t != 0) {
+        c = 1;
+      }
+      if (++dl >= 0) {
+        break;
+      }
+
+      b += 4;
+      r += 4;
+    }
+  } else {
+    int save_dl = dl;
+    while (c) {
+      t = a[0];
+      r[0] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[1];
+      r[1] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[2];
+      r[2] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      t = a[3];
+      r[3] = t - c;
+      if (t != 0) {
+        c = 0;
+      }
+      if (--dl <= 0) {
+        break;
+      }
+
+      save_dl = dl;
+      a += 4;
+      r += 4;
+    }
+    if (dl > 0) {
+      if (save_dl > dl) {
+        switch (save_dl - dl) {
+          case 1:
+            r[1] = a[1];
+            if (--dl <= 0) {
+              break;
+            }
+            OPENSSL_FALLTHROUGH;
+          case 2:
+            r[2] = a[2];
+            if (--dl <= 0) {
+              break;
+            }
+            OPENSSL_FALLTHROUGH;
+          case 3:
+            r[3] = a[3];
+            if (--dl <= 0) {
+              break;
+            }
+        }
+        a += 4;
+        r += 4;
+      }
+    }
+
+    if (dl > 0) {
+      for (;;) {
+        r[0] = a[0];
+        if (--dl <= 0) {
+          break;
+        }
+        r[1] = a[1];
+        if (--dl <= 0) {
+          break;
+        }
+        r[2] = a[2];
+        if (--dl <= 0) {
+          break;
+        }
+        r[3] = a[3];
+        if (--dl <= 0) {
+          break;
+        }
+
+        a += 4;
+        r += 4;
+      }
+    }
+  }
+
+  return c;
+}
+#else
+// On other platforms the function is defined in asm.
+BN_ULONG bn_sub_part_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                           int cl, int dl);
+#endif
+
+// bn_abs_sub_part_words computes |r| = |a| - |b|, storing the absolute value
+// and returning a mask of all ones if the result was negative and all zeros if
+// the result was positive. |cl| and |dl| follow the |bn_sub_part_words| calling
+// convention.
+//
+// TODO(davidben): Make this take |size_t|. The |cl| + |dl| calling convention
+// is confusing. The trouble is 32-bit x86 implements |bn_sub_part_words| in
+// assembly, but we can probably just delete it?
+static BN_ULONG bn_abs_sub_part_words(BN_ULONG *r, const BN_ULONG *a,
+                                      const BN_ULONG *b, int cl, int dl,
+                                      BN_ULONG *tmp) {
+  BN_ULONG borrow = bn_sub_part_words(tmp, a, b, cl, dl);
+  bn_sub_part_words(r, b, a, cl, -dl);
+  int r_len = cl + (dl < 0 ? -dl : dl);
+  borrow = 0 - borrow;
+  bn_select_words(r, borrow, r /* tmp < 0 */, tmp /* tmp >= 0 */, r_len);
+  return borrow;
+}
+
+int bn_abs_sub_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                         BN_CTX *ctx) {
+  int cl = a->width < b->width ? a->width : b->width;
+  int dl = a->width - b->width;
+  int r_len = a->width < b->width ? b->width : a->width;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ok = tmp != NULL &&
+           bn_wexpand(r, r_len) &&
+           bn_wexpand(tmp, r_len);
+  if (ok) {
+    bn_abs_sub_part_words(r->d, a->d, b->d, cl, dl, tmp->d);
+    r->width = r_len;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+// Karatsuba recursive multiplication algorithm
+// (cf. Knuth, The Art of Computer Programming, Vol. 2)
+
+// bn_mul_recursive sets |r| to |a| * |b|, using |t| as scratch space. |r| has
+// length 2*|n2|, |a| has length |n2| + |dna|, |b| has length |n2| + |dnb|, and
+// |t| has length 4*|n2|. |n2| must be a power of two. Finally, we must have
+// -|BN_MUL_RECURSIVE_SIZE_NORMAL|/2 <= |dna| <= 0 and
+// -|BN_MUL_RECURSIVE_SIZE_NORMAL|/2 <= |dnb| <= 0.
+//
+// TODO(davidben): Simplify and |size_t| the calling convention around lengths
+// here.
+static void bn_mul_recursive(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b,
+                             int n2, int dna, int dnb, BN_ULONG *t) {
+  // |n2| is a power of two.
+  assert(n2 != 0 && (n2 & (n2 - 1)) == 0);
+  // Check |dna| and |dnb| are in range.
+  assert(-BN_MUL_RECURSIVE_SIZE_NORMAL/2 <= dna && dna <= 0);
+  assert(-BN_MUL_RECURSIVE_SIZE_NORMAL/2 <= dnb && dnb <= 0);
+
+  // Only call bn_mul_comba 8 if n2 == 8 and the
+  // two arrays are complete [steve]
+  if (n2 == 8 && dna == 0 && dnb == 0) {
+    bn_mul_comba8(r, a, b);
+    return;
+  }
+
+  // Else do normal multiply
+  if (n2 < BN_MUL_RECURSIVE_SIZE_NORMAL) {
+    bn_mul_normal(r, a, n2 + dna, b, n2 + dnb);
+    if (dna + dnb < 0) {
+      OPENSSL_memset(&r[2 * n2 + dna + dnb], 0,
+                     sizeof(BN_ULONG) * -(dna + dnb));
+    }
+    return;
+  }
+
+  // Split |a| and |b| into a0,a1 and b0,b1, where a0 and b0 have size |n|.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0*b0 to r0,r1, a0*a1+b0*b1
+  // to r1,r2, and a1*b1 to r2,r3. The middle term we will compute as:
+  //
+  //   a0*a1 + b0*b1 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0
+  //
+  // Note that we know |n| >= |BN_MUL_RECURSIVE_SIZE_NORMAL|/2 above, so
+  // |tna| and |tnb| are non-negative.
+  int n = n2 / 2, tna = n + dna, tnb = n + dnb;
+
+  // t0 = a0 - a1 and t1 = b1 - b0. The result will be multiplied, so we XOR
+  // their sign masks, giving the sign of (a0 - a1)*(b1 - b0). t0 and t1
+  // themselves store the absolute value.
+  BN_ULONG neg = bn_abs_sub_part_words(t, a, &a[n], tna, n - tna, &t[n2]);
+  neg ^= bn_abs_sub_part_words(&t[n], &b[n], b, tnb, tnb - n, &t[n2]);
+
+  // Compute:
+  // t2,t3 = t0 * t1 = |(a0 - a1)*(b1 - b0)|
+  // r0,r1 = a0 * b0
+  // r2,r3 = a1 * b1
+  if (n == 4 && dna == 0 && dnb == 0) {
+    bn_mul_comba4(&t[n2], t, &t[n]);
+
+    bn_mul_comba4(r, a, b);
+    bn_mul_comba4(&r[n2], &a[n], &b[n]);
+  } else if (n == 8 && dna == 0 && dnb == 0) {
+    bn_mul_comba8(&t[n2], t, &t[n]);
+
+    bn_mul_comba8(r, a, b);
+    bn_mul_comba8(&r[n2], &a[n], &b[n]);
+  } else {
+    BN_ULONG *p = &t[n2 * 2];
+    bn_mul_recursive(&t[n2], t, &t[n], n, 0, 0, p);
+    bn_mul_recursive(r, a, b, n, 0, 0, p);
+    bn_mul_recursive(&r[n2], &a[n], &b[n], n, dna, dnb, p);
+  }
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0*b0 + a1*b1
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+
+  // t2,t3,c = t0,t1,c + neg*t2,t3 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0.
+  // The second term is stored as the absolute value, so we do this with a
+  // constant-time select.
+  BN_ULONG c_neg = c - bn_sub_words(&t[n2 * 2], t, &t[n2], n2);
+  BN_ULONG c_pos = c + bn_add_words(&t[n2], t, &t[n2], n2);
+  bn_select_words(&t[n2], neg, &t[n2 * 2], &t[n2], n2);
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  c = constant_time_select_w(neg, c_neg, c_pos);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (int i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The product should fit without carries.
+  assert(c == 0);
+}
+
+// bn_mul_part_recursive sets |r| to |a| * |b|, using |t| as scratch space. |r|
+// has length 4*|n|, |a| has length |n| + |tna|, |b| has length |n| + |tnb|, and
+// |t| has length 8*|n|. |n| must be a power of two. Additionally, we must have
+// 0 <= tna < n and 0 <= tnb < n, and |tna| and |tnb| must differ by at most
+// one.
+//
+// TODO(davidben): Make this take |size_t| and perhaps the actual lengths of |a|
+// and |b|.
+static void bn_mul_part_recursive(BN_ULONG *r, const BN_ULONG *a,
+                                  const BN_ULONG *b, int n, int tna, int tnb,
+                                  BN_ULONG *t) {
+  // |n| is a power of two.
+  assert(n != 0 && (n & (n - 1)) == 0);
+  // Check |tna| and |tnb| are in range.
+  assert(0 <= tna && tna < n);
+  assert(0 <= tnb && tnb < n);
+  assert(-1 <= tna - tnb && tna - tnb <= 1);
+
+  int n2 = n * 2;
+  if (n < 8) {
+    bn_mul_normal(r, a, n + tna, b, n + tnb);
+    OPENSSL_memset(r + n2 + tna + tnb, 0, n2 - tna - tnb);
+    return;
+  }
+
+  // Split |a| and |b| into a0,a1 and b0,b1, where a0 and b0 have size |n|. |a1|
+  // and |b1| have size |tna| and |tnb|, respectively.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0*b0 to r0,r1, a0*a1+b0*b1
+  // to r1,r2, and a1*b1 to r2,r3. The middle term we will compute as:
+  //
+  //   a0*a1 + b0*b1 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0
+
+  // t0 = a0 - a1 and t1 = b1 - b0. The result will be multiplied, so we XOR
+  // their sign masks, giving the sign of (a0 - a1)*(b1 - b0). t0 and t1
+  // themselves store the absolute value.
+  BN_ULONG neg = bn_abs_sub_part_words(t, a, &a[n], tna, n - tna, &t[n2]);
+  neg ^= bn_abs_sub_part_words(&t[n], &b[n], b, tnb, tnb - n, &t[n2]);
+
+  // Compute:
+  // t2,t3 = t0 * t1 = |(a0 - a1)*(b1 - b0)|
+  // r0,r1 = a0 * b0
+  // r2,r3 = a1 * b1
+  if (n == 8) {
+    bn_mul_comba8(&t[n2], t, &t[n]);
+    bn_mul_comba8(r, a, b);
+
+    bn_mul_normal(&r[n2], &a[n], tna, &b[n], tnb);
+    // |bn_mul_normal| only writes |tna| + |tna| words. Zero the rest.
+    OPENSSL_memset(&r[n2 + tna + tnb], 0, sizeof(BN_ULONG) * (n2 - tna - tnb));
+  } else {
+    BN_ULONG *p = &t[n2 * 2];
+    bn_mul_recursive(&t[n2], t, &t[n], n, 0, 0, p);
+    bn_mul_recursive(r, a, b, n, 0, 0, p);
+
+    OPENSSL_memset(&r[n2], 0, sizeof(BN_ULONG) * n2);
+    if (tna < BN_MUL_RECURSIVE_SIZE_NORMAL &&
+        tnb < BN_MUL_RECURSIVE_SIZE_NORMAL) {
+      bn_mul_normal(&r[n2], &a[n], tna, &b[n], tnb);
+    } else {
+      int i = n;
+      for (;;) {
+        i /= 2;
+        if (i < tna || i < tnb) {
+          // E.g., n == 16, i == 8 and tna == 11. |tna| and |tnb| are within one
+          // of each other, so if |tna| is larger and tna > i, then we know
+          // tnb >= i, and this call is valid.
+          bn_mul_part_recursive(&r[n2], &a[n], &b[n], i, tna - i, tnb - i, p);
+          break;
+        }
+        if (i == tna || i == tnb) {
+          // If there is only a bottom half to the number, just do it. We know
+          // the larger of |tna - i| and |tnb - i| is zero. The other is zero or
+          // -1 by because of |tna| and |tnb| differ by at most one.
+          bn_mul_recursive(&r[n2], &a[n], &b[n], i, tna - i, tnb - i, p);
+          break;
+        }
+
+        // This loop will eventually terminate when |i| falls below
+        // |BN_MUL_RECURSIVE_SIZE_NORMAL| because we know one of |tna| and |tnb|
+        // exceeds that.
+      }
+    }
+  }
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0*b0 + a1*b1
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+
+  // t2,t3,c = t0,t1,c + neg*t2,t3 = (a0 - a1)*(b1 - b0) + a1*b1 + a0*b0.
+  // The second term is stored as the absolute value, so we do this with a
+  // constant-time select.
+  BN_ULONG c_neg = c - bn_sub_words(&t[n2 * 2], t, &t[n2], n2);
+  BN_ULONG c_pos = c + bn_add_words(&t[n2], t, &t[n2], n2);
+  bn_select_words(&t[n2], neg, &t[n2 * 2], &t[n2], n2);
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  c = constant_time_select_w(neg, c_neg, c_pos);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (int i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The product should fit without carries.
+  assert(c == 0);
+}
+
+// bn_mul_impl implements |BN_mul| and |bn_mul_consttime|. Note this function
+// breaks |BIGNUM| invariants and may return a negative zero. This is handled by
+// the callers.
+static int bn_mul_impl(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                       BN_CTX *ctx) {
+  int al = a->width;
+  int bl = b->width;
+  if (al == 0 || bl == 0) {
+    BN_zero(r);
+    return 1;
+  }
+
+  int ret = 0;
+  BIGNUM *rr;
+  BN_CTX_start(ctx);
+  if (r == a || r == b) {
+    rr = BN_CTX_get(ctx);
+    if (rr == NULL) {
+      goto err;
+    }
+  } else {
+    rr = r;
+  }
+  rr->neg = a->neg ^ b->neg;
+
+  int i = al - bl;
+  if (i == 0) {
+    if (al == 8) {
+      if (!bn_wexpand(rr, 16)) {
+        goto err;
+      }
+      rr->width = 16;
+      bn_mul_comba8(rr->d, a->d, b->d);
+      goto end;
+    }
+  }
+
+  int top = al + bl;
+  static const int kMulNormalSize = 16;
+  if (al >= kMulNormalSize && bl >= kMulNormalSize) {
+    if (-1 <= i && i <= 1) {
+      // Find the larger power of two less than or equal to the larger length.
+      int j;
+      if (i >= 0) {
+        j = BN_num_bits_word((BN_ULONG)al);
+      } else {
+        j = BN_num_bits_word((BN_ULONG)bl);
+      }
+      j = 1 << (j - 1);
+      assert(j <= al || j <= bl);
+      BIGNUM *t = BN_CTX_get(ctx);
+      if (t == NULL) {
+        goto err;
+      }
+      if (al > j || bl > j) {
+        // We know |al| and |bl| are at most one from each other, so if al > j,
+        // bl >= j, and vice versa. Thus we can use |bn_mul_part_recursive|.
+        assert(al >= j && bl >= j);
+        if (!bn_wexpand(t, j * 8) ||
+            !bn_wexpand(rr, j * 4)) {
+          goto err;
+        }
+        bn_mul_part_recursive(rr->d, a->d, b->d, j, al - j, bl - j, t->d);
+      } else {
+        // al <= j && bl <= j. Additionally, we know j <= al or j <= bl, so one
+        // of al - j or bl - j is zero. The other, by the bound on |i| above, is
+        // zero or -1. Thus, we can use |bn_mul_recursive|.
+        if (!bn_wexpand(t, j * 4) ||
+            !bn_wexpand(rr, j * 2)) {
+          goto err;
+        }
+        bn_mul_recursive(rr->d, a->d, b->d, j, al - j, bl - j, t->d);
+      }
+      rr->width = top;
+      goto end;
+    }
+  }
+
+  if (!bn_wexpand(rr, top)) {
+    goto err;
+  }
+  rr->width = top;
+  bn_mul_normal(rr->d, a->d, al, b->d, bl);
+
+end:
+  if (r != rr && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  if (!bn_mul_impl(r, a, b, ctx)) {
+    return 0;
+  }
+
+  // This additionally fixes any negative zeros created by |bn_mul_impl|.
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int bn_mul_consttime(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  // Prevent negative zeros.
+  if (a->neg || b->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  return bn_mul_impl(r, a, b, ctx);
+}
+
+void bn_mul_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a,
+                  const BN_ULONG *b, size_t num_b) {
+  if (num_r != num_a + num_b) {
+    abort();
+  }
+  // TODO(davidben): Should this call |bn_mul_comba4| too? |BN_mul| does not
+  // hit that code.
+  if (num_a == 8 && num_b == 8) {
+    bn_mul_comba8(r, a, b);
+  } else {
+    bn_mul_normal(r, a, num_a, b, num_b);
+  }
+}
+
+// tmp must have 2*n words
+static void bn_sqr_normal(BN_ULONG *r, const BN_ULONG *a, size_t n,
+                          BN_ULONG *tmp) {
+  if (n == 0) {
+    return;
+  }
+
+  size_t max = n * 2;
+  const BN_ULONG *ap = a;
+  BN_ULONG *rp = r;
+  rp[0] = rp[max - 1] = 0;
+  rp++;
+
+  // Compute the contribution of a[i] * a[j] for all i < j.
+  if (n > 1) {
+    ap++;
+    rp[n - 1] = bn_mul_words(rp, ap, n - 1, ap[-1]);
+    rp += 2;
+  }
+  if (n > 2) {
+    for (size_t i = n - 2; i > 0; i--) {
+      ap++;
+      rp[i] = bn_mul_add_words(rp, ap, i, ap[-1]);
+      rp += 2;
+    }
+  }
+
+  // The final result fits in |max| words, so none of the following operations
+  // will overflow.
+
+  // Double |r|, giving the contribution of a[i] * a[j] for all i != j.
+  bn_add_words(r, r, r, max);
+
+  // Add in the contribution of a[i] * a[i] for all i.
+  bn_sqr_words(tmp, a, n);
+  bn_add_words(r, r, tmp, max);
+}
+
+// bn_sqr_recursive sets |r| to |a|^2, using |t| as scratch space. |r| has
+// length 2*|n2|, |a| has length |n2|, and |t| has length 4*|n2|. |n2| must be
+// a power of two.
+static void bn_sqr_recursive(BN_ULONG *r, const BN_ULONG *a, size_t n2,
+                             BN_ULONG *t) {
+  // |n2| is a power of two.
+  assert(n2 != 0 && (n2 & (n2 - 1)) == 0);
+
+  if (n2 == 4) {
+    bn_sqr_comba4(r, a);
+    return;
+  }
+  if (n2 == 8) {
+    bn_sqr_comba8(r, a);
+    return;
+  }
+  if (n2 < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+    bn_sqr_normal(r, a, n2, t);
+    return;
+  }
+
+  // Split |a| into a0,a1, each of size |n|.
+  // Split |t| into t0,t1,t2,t3, each of size |n|, with the remaining 4*|n| used
+  // for recursive calls.
+  // Split |r| into r0,r1,r2,r3. We must contribute a0^2 to r0,r1, 2*a0*a1 to
+  // r1,r2, and a1^2 to r2,r3.
+  size_t n = n2 / 2;
+  BN_ULONG *t_recursive = &t[n2 * 2];
+
+  // t0 = |a0 - a1|.
+  bn_abs_sub_words(t, a, &a[n], n, &t[n]);
+  // t2,t3 = t0^2 = |a0 - a1|^2 = a0^2 - 2*a0*a1 + a1^2
+  bn_sqr_recursive(&t[n2], t, n, t_recursive);
+
+  // r0,r1 = a0^2
+  bn_sqr_recursive(r, a, n, t_recursive);
+
+  // r2,r3 = a1^2
+  bn_sqr_recursive(&r[n2], &a[n], n, t_recursive);
+
+  // t0,t1,c = r0,r1 + r2,r3 = a0^2 + a1^2
+  BN_ULONG c = bn_add_words(t, r, &r[n2], n2);
+  // t2,t3,c = t0,t1,c - t2,t3 = 2*a0*a1
+  c -= bn_sub_words(&t[n2], t, &t[n2], n2);
+
+  // We now have our three components. Add them together.
+  // r1,r2,c = r1,r2 + t2,t3,c
+  c += bn_add_words(&r[n], &r[n], &t[n2], n2);
+
+  // Propagate the carry bit to the end.
+  for (size_t i = n + n2; i < n2 + n2; i++) {
+    BN_ULONG old = r[i];
+    r[i] = old + c;
+    c = r[i] < old;
+  }
+
+  // The square should fit without carries.
+  assert(c == 0);
+}
+
+int BN_mul_word(BIGNUM *bn, BN_ULONG w) {
+  if (!bn->width) {
+    return 1;
+  }
+
+  if (w == 0) {
+    BN_zero(bn);
+    return 1;
+  }
+
+  BN_ULONG ll = bn_mul_words(bn->d, bn->d, bn->width, w);
+  if (ll) {
+    if (!bn_wexpand(bn, bn->width + 1)) {
+      return 0;
+    }
+    bn->d[bn->width++] = ll;
+  }
+
+  return 1;
+}
+
+int bn_sqr_consttime(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx) {
+  int al = a->width;
+  if (al <= 0) {
+    r->width = 0;
+    r->neg = 0;
+    return 1;
+  }
+
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *rr = (a != r) ? r : BN_CTX_get(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (!rr || !tmp) {
+    goto err;
+  }
+
+  int max = 2 * al;  // Non-zero (from above)
+  if (!bn_wexpand(rr, max)) {
+    goto err;
+  }
+
+  if (al == 4) {
+    bn_sqr_comba4(rr->d, a->d);
+  } else if (al == 8) {
+    bn_sqr_comba8(rr->d, a->d);
+  } else {
+    if (al < BN_SQR_RECURSIVE_SIZE_NORMAL) {
+      BN_ULONG t[BN_SQR_RECURSIVE_SIZE_NORMAL * 2];
+      bn_sqr_normal(rr->d, a->d, al, t);
+    } else {
+      // If |al| is a power of two, we can use |bn_sqr_recursive|.
+      if (al != 0 && (al & (al - 1)) == 0) {
+        if (!bn_wexpand(tmp, al * 4)) {
+          goto err;
+        }
+        bn_sqr_recursive(rr->d, a->d, al, tmp->d);
+      } else {
+        if (!bn_wexpand(tmp, max)) {
+          goto err;
+        }
+        bn_sqr_normal(rr->d, a->d, al, tmp->d);
+      }
+    }
+  }
+
+  rr->neg = 0;
+  rr->width = max;
+
+  if (rr != r && !BN_copy(r, rr)) {
+    goto err;
+  }
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx) {
+  if (!bn_sqr_consttime(r, a, ctx)) {
+    return 0;
+  }
+
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+void bn_sqr_small(BN_ULONG *r, size_t num_r, const BN_ULONG *a, size_t num_a) {
+  if (num_r != 2 * num_a || num_a > BN_SMALL_MAX_WORDS) {
+    abort();
+  }
+  if (num_a == 4) {
+    bn_sqr_comba4(r, a);
+  } else if (num_a == 8) {
+    bn_sqr_comba8(r, a);
+  } else {
+    BN_ULONG tmp[2 * BN_SMALL_MAX_WORDS];
+    bn_sqr_normal(r, a, num_a, tmp);
+    OPENSSL_cleanse(tmp, 2 * num_a * sizeof(BN_ULONG));
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c
new file mode 100644
index 0000000..ea41f0f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c	
@@ -0,0 +1,1068 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// The quick sieve algorithm approach to weeding out primes is Philip
+// Zimmermann's, as implemented in PGP.  I have had a read of his comments and
+// implemented my own version.
+
+// kPrimes contains the first 1024 primes.
+static const uint16_t kPrimes[] = {
+    2,    3,    5,    7,    11,   13,   17,   19,   23,   29,   31,   37,
+    41,   43,   47,   53,   59,   61,   67,   71,   73,   79,   83,   89,
+    97,   101,  103,  107,  109,  113,  127,  131,  137,  139,  149,  151,
+    157,  163,  167,  173,  179,  181,  191,  193,  197,  199,  211,  223,
+    227,  229,  233,  239,  241,  251,  257,  263,  269,  271,  277,  281,
+    283,  293,  307,  311,  313,  317,  331,  337,  347,  349,  353,  359,
+    367,  373,  379,  383,  389,  397,  401,  409,  419,  421,  431,  433,
+    439,  443,  449,  457,  461,  463,  467,  479,  487,  491,  499,  503,
+    509,  521,  523,  541,  547,  557,  563,  569,  571,  577,  587,  593,
+    599,  601,  607,  613,  617,  619,  631,  641,  643,  647,  653,  659,
+    661,  673,  677,  683,  691,  701,  709,  719,  727,  733,  739,  743,
+    751,  757,  761,  769,  773,  787,  797,  809,  811,  821,  823,  827,
+    829,  839,  853,  857,  859,  863,  877,  881,  883,  887,  907,  911,
+    919,  929,  937,  941,  947,  953,  967,  971,  977,  983,  991,  997,
+    1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069,
+    1087, 1091, 1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163,
+    1171, 1181, 1187, 1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249,
+    1259, 1277, 1279, 1283, 1289, 1291, 1297, 1301, 1303, 1307, 1319, 1321,
+    1327, 1361, 1367, 1373, 1381, 1399, 1409, 1423, 1427, 1429, 1433, 1439,
+    1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, 1499, 1511,
+    1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583, 1597, 1601,
+    1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693,
+    1697, 1699, 1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783,
+    1787, 1789, 1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877,
+    1879, 1889, 1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987,
+    1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, 2039, 2053, 2063, 2069,
+    2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137, 2141, 2143,
+    2153, 2161, 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251, 2267,
+    2269, 2273, 2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347,
+    2351, 2357, 2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423,
+    2437, 2441, 2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531, 2539, 2543,
+    2549, 2551, 2557, 2579, 2591, 2593, 2609, 2617, 2621, 2633, 2647, 2657,
+    2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, 2699, 2707, 2711, 2713,
+    2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, 2797, 2801,
+    2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903,
+    2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, 3001, 3011,
+    3019, 3023, 3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119,
+    3121, 3137, 3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221,
+    3229, 3251, 3253, 3257, 3259, 3271, 3299, 3301, 3307, 3313, 3319, 3323,
+    3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391, 3407, 3413,
+    3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, 3517, 3527,
+    3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607,
+    3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697,
+    3701, 3709, 3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797,
+    3803, 3821, 3823, 3833, 3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907,
+    3911, 3917, 3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989, 4001, 4003,
+    4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057, 4073, 4079, 4091, 4093,
+    4099, 4111, 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, 4201, 4211,
+    4217, 4219, 4229, 4231, 4241, 4243, 4253, 4259, 4261, 4271, 4273, 4283,
+    4289, 4297, 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, 4397, 4409,
+    4421, 4423, 4441, 4447, 4451, 4457, 4463, 4481, 4483, 4493, 4507, 4513,
+    4517, 4519, 4523, 4547, 4549, 4561, 4567, 4583, 4591, 4597, 4603, 4621,
+    4637, 4639, 4643, 4649, 4651, 4657, 4663, 4673, 4679, 4691, 4703, 4721,
+    4723, 4729, 4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799, 4801, 4813,
+    4817, 4831, 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, 4933, 4937,
+    4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5003, 5009, 5011,
+    5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087, 5099, 5101, 5107, 5113,
+    5119, 5147, 5153, 5167, 5171, 5179, 5189, 5197, 5209, 5227, 5231, 5233,
+    5237, 5261, 5273, 5279, 5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351,
+    5381, 5387, 5393, 5399, 5407, 5413, 5417, 5419, 5431, 5437, 5441, 5443,
+    5449, 5471, 5477, 5479, 5483, 5501, 5503, 5507, 5519, 5521, 5527, 5531,
+    5557, 5563, 5569, 5573, 5581, 5591, 5623, 5639, 5641, 5647, 5651, 5653,
+    5657, 5659, 5669, 5683, 5689, 5693, 5701, 5711, 5717, 5737, 5741, 5743,
+    5749, 5779, 5783, 5791, 5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849,
+    5851, 5857, 5861, 5867, 5869, 5879, 5881, 5897, 5903, 5923, 5927, 5939,
+    5953, 5981, 5987, 6007, 6011, 6029, 6037, 6043, 6047, 6053, 6067, 6073,
+    6079, 6089, 6091, 6101, 6113, 6121, 6131, 6133, 6143, 6151, 6163, 6173,
+    6197, 6199, 6203, 6211, 6217, 6221, 6229, 6247, 6257, 6263, 6269, 6271,
+    6277, 6287, 6299, 6301, 6311, 6317, 6323, 6329, 6337, 6343, 6353, 6359,
+    6361, 6367, 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451, 6469, 6473,
+    6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571, 6577, 6581,
+    6599, 6607, 6619, 6637, 6653, 6659, 6661, 6673, 6679, 6689, 6691, 6701,
+    6703, 6709, 6719, 6733, 6737, 6761, 6763, 6779, 6781, 6791, 6793, 6803,
+    6823, 6827, 6829, 6833, 6841, 6857, 6863, 6869, 6871, 6883, 6899, 6907,
+    6911, 6917, 6947, 6949, 6959, 6961, 6967, 6971, 6977, 6983, 6991, 6997,
+    7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, 7109, 7121,
+    7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229,
+    7237, 7243, 7247, 7253, 7283, 7297, 7307, 7309, 7321, 7331, 7333, 7349,
+    7351, 7369, 7393, 7411, 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487,
+    7489, 7499, 7507, 7517, 7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561,
+    7573, 7577, 7583, 7589, 7591, 7603, 7607, 7621, 7639, 7643, 7649, 7669,
+    7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, 7727, 7741, 7753, 7757,
+    7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873, 7877, 7879,
+    7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993, 8009,
+    8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111,
+    8117, 8123, 8147, 8161,
+};
+
+// BN_prime_checks_for_size returns the number of Miller-Rabin iterations
+// necessary for generating a 'bits'-bit candidate prime.
+//
+//
+// This table is generated using the algorithm of FIPS PUB 186-4
+// Digital Signature Standard (DSS), section F.1, page 117.
+// (https://doi.org/10.6028/NIST.FIPS.186-4)
+// The following magma script was used to generate the output:
+// securitybits:=125;
+// k:=1024;
+// for t:=1 to 65 do
+//   for M:=3 to Floor(2*Sqrt(k-1)-1) do
+//     S:=0;
+//     // Sum over m
+//     for m:=3 to M do
+//       s:=0;
+//       // Sum over j
+//       for j:=2 to m do
+//         s+:=(RealField(32)!2)^-(j+(k-1)/j);
+//       end for;
+//       S+:=2^(m-(m-1)*t)*s;
+//     end for;
+//     A:=2^(k-2-M*t);
+//     B:=8*(Pi(RealField(32))^2-6)/3*2^(k-2)*S;
+//     pkt:=2.00743*Log(2)*k*2^-k*(A+B);
+//     seclevel:=Floor(-Log(2,pkt));
+//     if seclevel ge securitybits then
+//       printf "k: %5o, security: %o bits  (t: %o, M: %o)\n",k,seclevel,t,M;
+//       break;
+//     end if;
+//   end for;
+//   if seclevel ge securitybits then break; end if;
+// end for;
+//
+// It can be run online at: http://magma.maths.usyd.edu.au/calc
+// And will output:
+// k:  1024, security: 129 bits  (t: 6, M: 23)
+// k is the number of bits of the prime, securitybits is the level we want to
+// reach.
+// prime length | RSA key size | # MR tests | security level
+// -------------+--------------|------------+---------------
+//  (b) >= 6394 |     >= 12788 |          3 |        256 bit
+//  (b) >= 3747 |     >=  7494 |          3 |        192 bit
+//  (b) >= 1345 |     >=  2690 |          4 |        128 bit
+//  (b) >= 1080 |     >=  2160 |          5 |        128 bit
+//  (b) >=  852 |     >=  1704 |          5 |        112 bit
+//  (b) >=  476 |     >=   952 |          5 |         80 bit
+//  (b) >=  400 |     >=   800 |          6 |         80 bit
+//  (b) >=  347 |     >=   694 |          7 |         80 bit
+//  (b) >=  308 |     >=   616 |          8 |         80 bit
+//  (b) >=   55 |     >=   110 |         27 |         64 bit
+//  (b) >=    6 |     >=    12 |         34 |         64 bit
+static int BN_prime_checks_for_size(int bits) {
+  if (bits >= 3747) {
+    return 3;
+  }
+  if (bits >= 1345) {
+    return 4;
+  }
+  if (bits >= 476) {
+    return 5;
+  }
+  if (bits >= 400) {
+    return 6;
+  }
+  if (bits >= 347) {
+    return 7;
+  }
+  if (bits >= 308) {
+    return 8;
+  }
+  if (bits >= 55) {
+    return 27;
+  }
+  return 34;
+}
+
+// num_trial_division_primes returns the number of primes to try with trial
+// division before using more expensive checks. For larger numbers, the value
+// of excluding a candidate with trial division is larger.
+static size_t num_trial_division_primes(const BIGNUM *n) {
+  if (n->width * BN_BITS2 > 1024) {
+    return OPENSSL_ARRAY_SIZE(kPrimes);
+  }
+  return OPENSSL_ARRAY_SIZE(kPrimes) / 2;
+}
+
+// BN_PRIME_CHECKS_BLINDED is the iteration count for blinding the constant-time
+// primality test. See |BN_primality_test| for details. This number is selected
+// so that, for a candidate N-bit RSA prime, picking |BN_PRIME_CHECKS_BLINDED|
+// random N-bit numbers will have at least |BN_prime_checks_for_size(N)| values
+// in range with high probability.
+//
+// The following Python script computes the blinding factor needed for the
+// corresponding iteration count.
+/*
+import math
+
+# We choose candidate RSA primes between sqrt(2)/2 * 2^N and 2^N and select
+# witnesses by generating random N-bit numbers. Thus the probability of
+# selecting one in range is at least sqrt(2)/2.
+p = math.sqrt(2) / 2
+
+# Target around 2^-8 probability of the blinding being insufficient given that
+# key generation is a one-time, noisy operation.
+epsilon = 2**-8
+
+def choose(a, b):
+  r = 1
+  for i in xrange(b):
+    r *= a - i
+    r /= (i + 1)
+  return r
+
+def failure_rate(min_uniform, iterations):
+  """ Returns the probability that, for |iterations| candidate witnesses, fewer
+      than |min_uniform| of them will be uniform. """
+  prob = 0.0
+  for i in xrange(min_uniform):
+    prob += (choose(iterations, i) *
+             p**i * (1-p)**(iterations - i))
+  return prob
+
+for min_uniform in (3, 4, 5, 6, 8, 13, 19, 28):
+  # Find the smallest number of iterations under the target failure rate.
+  iterations = min_uniform
+  while True:
+    prob = failure_rate(min_uniform, iterations)
+    if prob < epsilon:
+      print min_uniform, iterations, prob
+      break
+    iterations += 1
+
+Output:
+  3 9 0.00368894873911
+  4 11 0.00363319494662
+  5 13 0.00336215573898
+  6 15 0.00300145783158
+  8 19 0.00225214119331
+  13 27 0.00385610026955
+  19 38 0.0021410539126
+  28 52 0.00325405801769
+
+16 iterations suffices for 400-bit primes and larger (6 uniform samples needed),
+which is already well below the minimum acceptable key size for RSA.
+*/
+#define BN_PRIME_CHECKS_BLINDED 16
+
+static int probable_prime(BIGNUM *rnd, int bits);
+static int probable_prime_dh(BIGNUM *rnd, int bits, const BIGNUM *add,
+                             const BIGNUM *rem, BN_CTX *ctx);
+static int probable_prime_dh_safe(BIGNUM *rnd, int bits, const BIGNUM *add,
+                                  const BIGNUM *rem, BN_CTX *ctx);
+
+void BN_GENCB_set(BN_GENCB *callback,
+                  int (*f)(int event, int n, struct bn_gencb_st *),
+                  void *arg) {
+  callback->callback = f;
+  callback->arg = arg;
+}
+
+int BN_GENCB_call(BN_GENCB *callback, int event, int n) {
+  if (!callback) {
+    return 1;
+  }
+
+  return callback->callback(event, n, callback);
+}
+
+int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe, const BIGNUM *add,
+                         const BIGNUM *rem, BN_GENCB *cb) {
+  BIGNUM *t;
+  int found = 0;
+  int i, j, c1 = 0;
+  BN_CTX *ctx;
+  int checks = BN_prime_checks_for_size(bits);
+
+  if (bits < 2) {
+    // There are no prime numbers this small.
+    OPENSSL_PUT_ERROR(BN, BN_R_BITS_TOO_SMALL);
+    return 0;
+  } else if (bits == 2 && safe) {
+    // The smallest safe prime (7) is three bits.
+    OPENSSL_PUT_ERROR(BN, BN_R_BITS_TOO_SMALL);
+    return 0;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (!t) {
+    goto err;
+  }
+
+loop:
+  // make a random number and set the top and bottom bits
+  if (add == NULL) {
+    if (!probable_prime(ret, bits)) {
+      goto err;
+    }
+  } else {
+    if (safe) {
+      if (!probable_prime_dh_safe(ret, bits, add, rem, ctx)) {
+        goto err;
+      }
+    } else {
+      if (!probable_prime_dh(ret, bits, add, rem, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_GENCB_call(cb, BN_GENCB_GENERATED, c1++)) {
+    // aborted
+    goto err;
+  }
+
+  if (!safe) {
+    i = BN_is_prime_fasttest_ex(ret, checks, ctx, 0, cb);
+    if (i == -1) {
+      goto err;
+    } else if (i == 0) {
+      goto loop;
+    }
+  } else {
+    // for "safe prime" generation, check that (p-1)/2 is prime. Since a prime
+    // is odd, We just need to divide by 2
+    if (!BN_rshift1(t, ret)) {
+      goto err;
+    }
+
+    // Interleave |ret| and |t|'s primality tests to avoid paying the full
+    // iteration count on |ret| only to quickly discover |t| is composite.
+    //
+    // TODO(davidben): This doesn't quite work because an iteration count of 1
+    // still runs the blinding mechanism.
+    for (i = 0; i < checks; i++) {
+      j = BN_is_prime_fasttest_ex(ret, 1, ctx, 0, NULL);
+      if (j == -1) {
+        goto err;
+      } else if (j == 0) {
+        goto loop;
+      }
+
+      j = BN_is_prime_fasttest_ex(t, 1, ctx, 0, NULL);
+      if (j == -1) {
+        goto err;
+      } else if (j == 0) {
+        goto loop;
+      }
+
+      if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i)) {
+        goto err;
+      }
+      // We have a safe prime test pass
+    }
+  }
+
+  // we have a prime :-)
+  found = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  return found;
+}
+
+static int bn_trial_division(uint16_t *out, const BIGNUM *bn) {
+  const size_t num_primes = num_trial_division_primes(bn);
+  for (size_t i = 1; i < num_primes; i++) {
+    if (bn_mod_u16_consttime(bn, kPrimes[i]) == 0) {
+      *out = kPrimes[i];
+      return 1;
+    }
+  }
+  return 0;
+}
+
+int bn_odd_number_is_obviously_composite(const BIGNUM *bn) {
+  uint16_t prime;
+  return bn_trial_division(&prime, bn) && !BN_is_word(bn, prime);
+}
+
+int bn_miller_rabin_init(BN_MILLER_RABIN *miller_rabin, const BN_MONT_CTX *mont,
+                         BN_CTX *ctx) {
+  // This function corresponds to steps 1 through 3 of FIPS 186-4, C.3.1.
+  const BIGNUM *w = &mont->N;
+  // Note we do not call |BN_CTX_start| in this function. We intentionally
+  // allocate values in the containing scope so they outlive this function.
+  miller_rabin->w1 = BN_CTX_get(ctx);
+  miller_rabin->m = BN_CTX_get(ctx);
+  miller_rabin->one_mont = BN_CTX_get(ctx);
+  miller_rabin->w1_mont = BN_CTX_get(ctx);
+  if (miller_rabin->w1 == NULL ||
+      miller_rabin->m == NULL ||
+      miller_rabin->one_mont == NULL ||
+      miller_rabin->w1_mont == NULL) {
+    return 0;
+  }
+
+  // See FIPS 186-4, C.3.1, steps 1 through 3.
+  if (!bn_usub_consttime(miller_rabin->w1, w, BN_value_one())) {
+    return 0;
+  }
+  miller_rabin->a = BN_count_low_zero_bits(miller_rabin->w1);
+  if (!bn_rshift_secret_shift(miller_rabin->m, miller_rabin->w1,
+                              miller_rabin->a, ctx)) {
+    return 0;
+  }
+  miller_rabin->w_bits = BN_num_bits(w);
+
+  // Precompute some values in Montgomery form.
+  if (!bn_one_to_montgomery(miller_rabin->one_mont, mont, ctx) ||
+      // w - 1 is -1 mod w, so we can compute it in the Montgomery domain, -R,
+      // with a subtraction. (|one_mont| cannot be zero.)
+      !bn_usub_consttime(miller_rabin->w1_mont, w, miller_rabin->one_mont)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int bn_miller_rabin_iteration(const BN_MILLER_RABIN *miller_rabin,
+                              int *out_is_possibly_prime, const BIGNUM *b,
+                              const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // This function corresponds to steps 4.3 through 4.5 of FIPS 186-4, C.3.1.
+  int ret = 0;
+  BN_CTX_start(ctx);
+
+  // Step 4.3. We use Montgomery-encoding for better performance and to avoid
+  // timing leaks.
+  const BIGNUM *w = &mont->N;
+  BIGNUM *z = BN_CTX_get(ctx);
+  if (z == NULL ||
+      !BN_mod_exp_mont_consttime(z, b, miller_rabin->m, w, ctx, mont) ||
+      !BN_to_montgomery(z, z, mont, ctx)) {
+    goto err;
+  }
+
+  // is_possibly_prime is all ones if we have determined |b| is not a composite
+  // witness for |w|. This is equivalent to going to step 4.7 in the original
+  // algorithm. To avoid timing leaks, we run the algorithm to the end for prime
+  // inputs.
+  crypto_word_t is_possibly_prime = 0;
+
+  // Step 4.4. If z = 1 or z = w-1, b is not a composite witness and w is still
+  // possibly prime.
+  is_possibly_prime = BN_equal_consttime(z, miller_rabin->one_mont) |
+                      BN_equal_consttime(z, miller_rabin->w1_mont);
+  is_possibly_prime = 0 - is_possibly_prime;  // Make it all zeros or all ones.
+
+  // Step 4.5.
+  //
+  // To avoid leaking |a|, we run the loop to |w_bits| and mask off all
+  // iterations once |j| = |a|.
+  for (int j = 1; j < miller_rabin->w_bits; j++) {
+    if (constant_time_eq_int(j, miller_rabin->a) & ~is_possibly_prime) {
+      // If the loop is done and we haven't seen z = 1 or z = w-1 yet, the
+      // value is composite and we can break in variable time.
+      break;
+    }
+
+    // Step 4.5.1.
+    if (!BN_mod_mul_montgomery(z, z, z, mont, ctx)) {
+      goto err;
+    }
+
+    // Step 4.5.2. If z = w-1 and the loop is not done, this is not a composite
+    // witness.
+    crypto_word_t z_is_w1_mont = BN_equal_consttime(z, miller_rabin->w1_mont);
+    z_is_w1_mont = 0 - z_is_w1_mont;    // Make it all zeros or all ones.
+    is_possibly_prime |= z_is_w1_mont;  // Go to step 4.7 if |z_is_w1_mont|.
+
+    // Step 4.5.3. If z = 1 and the loop is not done, the previous value of z
+    // was not -1. There are no non-trivial square roots of 1 modulo a prime, so
+    // w is composite and we may exit in variable time.
+    if (BN_equal_consttime(z, miller_rabin->one_mont) & ~is_possibly_prime) {
+      break;
+    }
+  }
+
+  *out_is_possibly_prime = is_possibly_prime & 1;
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_primality_test(int *out_is_probably_prime, const BIGNUM *w, int checks,
+                      BN_CTX *ctx, int do_trial_division, BN_GENCB *cb) {
+  // This function's secrecy and performance requirements come from RSA key
+  // generation. We generate RSA keys by selecting two large, secret primes with
+  // rejection sampling.
+  //
+  // We thus treat |w| as secret if turns out to be a large prime. However, if
+  // |w| is composite, we treat this and |w| itself as public. (Conversely, if
+  // |w| is prime, that it is prime is public. Only the value is secret.) This
+  // is fine for RSA key generation, but note it is important that we use
+  // rejection sampling, with each candidate prime chosen independently. This
+  // would not work for, e.g., an algorithm which looked for primes in
+  // consecutive integers. These assumptions allow us to discard composites
+  // quickly. We additionally treat |w| as public when it is a small prime to
+  // simplify trial decryption and some edge cases.
+  //
+  // One RSA key generation will call this function on exactly two primes and
+  // many more composites. The overall cost is a combination of several factors:
+  //
+  // 1. Checking if |w| is divisible by a small prime is much faster than
+  //    learning it is composite by Miller-Rabin (see below for details on that
+  //    cost). Trial division by p saves 1/p of Miller-Rabin calls, so this is
+  //    worthwhile until p exceeds the ratio of the two costs.
+  //
+  // 2. For a random (i.e. non-adversarial) candidate large prime and candidate
+  //    witness, the probability of false witness is very low. (This is why FIPS
+  //    186-4 only requires a few iterations.) Thus composites not discarded by
+  //    trial decryption, in practice, cost one Miller-Rabin iteration. Only the
+  //    two actual primes cost the full iteration count.
+  //
+  // 3. A Miller-Rabin iteration is a modular exponentiation plus |a| additional
+  //    modular squares, where |a| is the number of factors of two in |w-1|. |a|
+  //    is likely small (the distribution falls exponentially), but it is also
+  //    potentially secret, so we loop up to its log(w) upper bound when |w| is
+  //    prime. When |w| is composite, we break early, so only two calls pay this
+  //    cost. (Note that all calls pay the modular exponentiation which is,
+  //    itself, log(w) modular multiplications and squares.)
+  //
+  // 4. While there are only two prime calls, they multiplicatively pay the full
+  //    costs of (2) and (3).
+  //
+  // 5. After the primes are chosen, RSA keys derive some values from the
+  //    primes, but this cost is negligible in comparison.
+
+  *out_is_probably_prime = 0;
+
+  if (BN_cmp(w, BN_value_one()) <= 0) {
+    return 1;
+  }
+
+  if (!BN_is_odd(w)) {
+    // The only even prime is two.
+    *out_is_probably_prime = BN_is_word(w, 2);
+    return 1;
+  }
+
+  // Miller-Rabin does not work for three.
+  if (BN_is_word(w, 3)) {
+    *out_is_probably_prime = 1;
+    return 1;
+  }
+
+  if (do_trial_division) {
+    // Perform additional trial division checks to discard small primes.
+    uint16_t prime;
+    if (bn_trial_division(&prime, w)) {
+      *out_is_probably_prime = BN_is_word(w, prime);
+      return 1;
+    }
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, -1)) {
+      return 0;
+    }
+  }
+
+  if (checks == BN_prime_checks_for_generation) {
+    checks = BN_prime_checks_for_size(BN_num_bits(w));
+  }
+
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      return 0;
+    }
+    ctx = new_ctx;
+  }
+
+  // See C.3.1 from FIPS 186-4.
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *b = BN_CTX_get(ctx);
+  BN_MONT_CTX *mont = BN_MONT_CTX_new_consttime(w, ctx);
+  BN_MILLER_RABIN miller_rabin;
+  if (b == NULL || mont == NULL ||
+      // Steps 1-3.
+      !bn_miller_rabin_init(&miller_rabin, mont, ctx)) {
+    goto err;
+  }
+
+  // The following loop performs in inner iteration of the Miller-Rabin
+  // Primality test (Step 4).
+  //
+  // The algorithm as specified in FIPS 186-4 leaks information on |w|, the RSA
+  // private key. Instead, we run through each iteration unconditionally,
+  // performing modular multiplications, masking off any effects to behave
+  // equivalently to the specified algorithm.
+  //
+  // We also blind the number of values of |b| we try. Steps 4.1–4.2 say to
+  // discard out-of-range values. To avoid leaking information on |w|, we use
+  // |bn_rand_secret_range| which, rather than discarding bad values, adjusts
+  // them to be in range. Though not uniformly selected, these adjusted values
+  // are still usable as Miller-Rabin checks.
+  //
+  // Miller-Rabin is already probabilistic, so we could reach the desired
+  // confidence levels by just suitably increasing the iteration count. However,
+  // to align with FIPS 186-4, we use a more pessimal analysis: we do not count
+  // the non-uniform values towards the iteration count. As a result, this
+  // function is more complex and has more timing risk than necessary.
+  //
+  // We count both total iterations and uniform ones and iterate until we've
+  // reached at least |BN_PRIME_CHECKS_BLINDED| and |iterations|, respectively.
+  // If the latter is large enough, it will be the limiting factor with high
+  // probability and we won't leak information.
+  //
+  // Note this blinding does not impact most calls when picking primes because
+  // composites are rejected early. Only the two secret primes see extra work.
+
+  crypto_word_t uniform_iterations = 0;
+  // Using |constant_time_lt_w| seems to prevent the compiler from optimizing
+  // this into two jumps.
+  for (int i = 1; (i <= BN_PRIME_CHECKS_BLINDED) |
+                  constant_time_lt_w(uniform_iterations, checks);
+       i++) {
+    // Step 4.1-4.2
+    int is_uniform;
+    if (!bn_rand_secret_range(b, &is_uniform, 2, miller_rabin.w1)) {
+        goto err;
+    }
+    uniform_iterations += is_uniform;
+
+    // Steps 4.3-4.5
+    int is_possibly_prime = 0;
+    if (!bn_miller_rabin_iteration(&miller_rabin, &is_possibly_prime, b, mont,
+                                   ctx)) {
+      goto err;
+    }
+
+    if (!is_possibly_prime) {
+      // Step 4.6. We did not see z = w-1 before z = 1, so w must be composite.
+      *out_is_probably_prime = 0;
+      ret = 1;
+      goto err;
+    }
+
+    // Step 4.7
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i - 1)) {
+      goto err;
+    }
+  }
+
+  assert(uniform_iterations >= (crypto_word_t)checks);
+  *out_is_probably_prime = 1;
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(mont);
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int BN_is_prime_ex(const BIGNUM *candidate, int checks, BN_CTX *ctx,
+                   BN_GENCB *cb) {
+  return BN_is_prime_fasttest_ex(candidate, checks, ctx, 0, cb);
+}
+
+int BN_is_prime_fasttest_ex(const BIGNUM *a, int checks, BN_CTX *ctx,
+                            int do_trial_division, BN_GENCB *cb) {
+  int is_probably_prime;
+  if (!BN_primality_test(&is_probably_prime, a, checks, ctx, do_trial_division,
+                         cb)) {
+    return -1;
+  }
+  return is_probably_prime;
+}
+
+int BN_enhanced_miller_rabin_primality_test(
+    enum bn_primality_result_t *out_result, const BIGNUM *w, int checks,
+    BN_CTX *ctx, BN_GENCB *cb) {
+  // Enhanced Miller-Rabin is only valid on odd integers greater than 3.
+  if (!BN_is_odd(w) || BN_cmp_word(w, 3) <= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_INPUT);
+    return 0;
+  }
+
+  if (checks == BN_prime_checks_for_generation) {
+    checks = BN_prime_checks_for_size(BN_num_bits(w));
+  }
+
+  int ret = 0;
+  BN_MONT_CTX *mont = NULL;
+
+  BN_CTX_start(ctx);
+
+  BIGNUM *w1 = BN_CTX_get(ctx);
+  if (w1 == NULL ||
+      !BN_copy(w1, w) ||
+      !BN_sub_word(w1, 1)) {
+    goto err;
+  }
+
+  // Write w1 as m*2^a (Steps 1 and 2).
+  int a = 0;
+  while (!BN_is_bit_set(w1, a)) {
+    a++;
+  }
+  BIGNUM *m = BN_CTX_get(ctx);
+  if (m == NULL ||
+      !BN_rshift(m, w1, a)) {
+    goto err;
+  }
+
+  BIGNUM *b = BN_CTX_get(ctx);
+  BIGNUM *g = BN_CTX_get(ctx);
+  BIGNUM *z = BN_CTX_get(ctx);
+  BIGNUM *x = BN_CTX_get(ctx);
+  BIGNUM *x1 = BN_CTX_get(ctx);
+  if (b == NULL ||
+      g == NULL ||
+      z == NULL ||
+      x == NULL ||
+      x1 == NULL) {
+    goto err;
+  }
+
+  // Montgomery setup for computations mod w
+  mont = BN_MONT_CTX_new_for_modulus(w, ctx);
+  if (mont == NULL) {
+    goto err;
+  }
+
+  // The following loop performs in inner iteration of the Enhanced Miller-Rabin
+  // Primality test (Step 4).
+  for (int i = 1; i <= checks; i++) {
+    // Step 4.1-4.2
+    if (!BN_rand_range_ex(b, 2, w1)) {
+      goto err;
+    }
+
+    // Step 4.3-4.4
+    if (!BN_gcd(g, b, w, ctx)) {
+      goto err;
+    }
+    if (BN_cmp_word(g, 1) > 0) {
+      *out_result = bn_composite;
+      ret = 1;
+      goto err;
+    }
+
+    // Step 4.5
+    if (!BN_mod_exp_mont(z, b, m, w, ctx, mont)) {
+      goto err;
+    }
+
+    // Step 4.6
+    if (BN_is_one(z) || BN_cmp(z, w1) == 0) {
+      goto loop;
+    }
+
+    // Step 4.7
+    for (int j = 1; j < a; j++) {
+      if (!BN_copy(x, z) || !BN_mod_mul(z, x, x, w, ctx)) {
+        goto err;
+      }
+      if (BN_cmp(z, w1) == 0) {
+        goto loop;
+      }
+      if (BN_is_one(z)) {
+        goto composite;
+      }
+    }
+
+    // Step 4.8-4.9
+    if (!BN_copy(x, z) || !BN_mod_mul(z, x, x, w, ctx)) {
+      goto err;
+    }
+
+    // Step 4.10-4.11
+    if (!BN_is_one(z) && !BN_copy(x, z)) {
+      goto err;
+    }
+
+ composite:
+    // Step 4.12-4.14
+    if (!BN_copy(x1, x) ||
+        !BN_sub_word(x1, 1) ||
+        !BN_gcd(g, x1, w, ctx)) {
+      goto err;
+    }
+    if (BN_cmp_word(g, 1) > 0) {
+      *out_result = bn_composite;
+    } else {
+      *out_result = bn_non_prime_power_composite;
+    }
+
+    ret = 1;
+    goto err;
+
+ loop:
+    // Step 4.15
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i - 1)) {
+      goto err;
+    }
+  }
+
+  *out_result = bn_probably_prime;
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(mont);
+  BN_CTX_end(ctx);
+
+  return ret;
+}
+
+static int probable_prime(BIGNUM *rnd, int bits) {
+  do {
+    if (!BN_rand(rnd, bits, BN_RAND_TOP_TWO, BN_RAND_BOTTOM_ODD)) {
+      return 0;
+    }
+  } while (bn_odd_number_is_obviously_composite(rnd));
+  return 1;
+}
+
+static int probable_prime_dh(BIGNUM *rnd, int bits, const BIGNUM *add,
+                             const BIGNUM *rem, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t1;
+
+  BN_CTX_start(ctx);
+  if ((t1 = BN_CTX_get(ctx)) == NULL) {
+    goto err;
+  }
+
+  if (!BN_rand(rnd, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD)) {
+    goto err;
+  }
+
+  // we need ((rnd-rem) % add) == 0
+
+  if (!BN_mod(t1, rnd, add, ctx)) {
+    goto err;
+  }
+  if (!BN_sub(rnd, rnd, t1)) {
+    goto err;
+  }
+  if (rem == NULL) {
+    if (!BN_add_word(rnd, 1)) {
+      goto err;
+    }
+  } else {
+    if (!BN_add(rnd, rnd, rem)) {
+      goto err;
+    }
+  }
+  // we now have a random number 'rand' to test.
+
+  const size_t num_primes = num_trial_division_primes(rnd);
+loop:
+  for (size_t i = 1; i < num_primes; i++) {
+    // check that rnd is a prime
+    if (bn_mod_u16_consttime(rnd, kPrimes[i]) <= 1) {
+      if (!BN_add(rnd, rnd, add)) {
+        goto err;
+      }
+      goto loop;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int probable_prime_dh_safe(BIGNUM *p, int bits, const BIGNUM *padd,
+                                  const BIGNUM *rem, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t1, *qadd, *q;
+
+  bits--;
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  qadd = BN_CTX_get(ctx);
+  if (qadd == NULL) {
+    goto err;
+  }
+
+  if (!BN_rshift1(qadd, padd)) {
+    goto err;
+  }
+
+  if (!BN_rand(q, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD)) {
+    goto err;
+  }
+
+  // we need ((rnd-rem) % add) == 0
+  if (!BN_mod(t1, q, qadd, ctx)) {
+    goto err;
+  }
+
+  if (!BN_sub(q, q, t1)) {
+    goto err;
+  }
+
+  if (rem == NULL) {
+    if (!BN_add_word(q, 1)) {
+      goto err;
+    }
+  } else {
+    if (!BN_rshift1(t1, rem)) {
+      goto err;
+    }
+    if (!BN_add(q, q, t1)) {
+      goto err;
+    }
+  }
+
+  // we now have a random number 'rand' to test.
+  if (!BN_lshift1(p, q)) {
+    goto err;
+  }
+  if (!BN_add_word(p, 1)) {
+    goto err;
+  }
+
+  const size_t num_primes = num_trial_division_primes(p);
+loop:
+  for (size_t i = 1; i < num_primes; i++) {
+    // check that p and q are prime
+    // check that for p and q
+    // gcd(p-1,primes) == 1 (except for 2)
+    if (bn_mod_u16_consttime(p, kPrimes[i]) == 0 ||
+        bn_mod_u16_consttime(q, kPrimes[i]) == 0) {
+      if (!BN_add(p, p, padd)) {
+        goto err;
+      }
+      if (!BN_add(q, q, qadd)) {
+        goto err;
+      }
+      goto loop;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c.grpc_back
new file mode 100644
index 0000000..262822f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/prime.c.grpc_back	
@@ -0,0 +1,1068 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// The quick sieve algorithm approach to weeding out primes is Philip
+// Zimmermann's, as implemented in PGP.  I have had a read of his comments and
+// implemented my own version.
+
+// kPrimes contains the first 1024 primes.
+static const uint16_t kPrimes[] = {
+    2,    3,    5,    7,    11,   13,   17,   19,   23,   29,   31,   37,
+    41,   43,   47,   53,   59,   61,   67,   71,   73,   79,   83,   89,
+    97,   101,  103,  107,  109,  113,  127,  131,  137,  139,  149,  151,
+    157,  163,  167,  173,  179,  181,  191,  193,  197,  199,  211,  223,
+    227,  229,  233,  239,  241,  251,  257,  263,  269,  271,  277,  281,
+    283,  293,  307,  311,  313,  317,  331,  337,  347,  349,  353,  359,
+    367,  373,  379,  383,  389,  397,  401,  409,  419,  421,  431,  433,
+    439,  443,  449,  457,  461,  463,  467,  479,  487,  491,  499,  503,
+    509,  521,  523,  541,  547,  557,  563,  569,  571,  577,  587,  593,
+    599,  601,  607,  613,  617,  619,  631,  641,  643,  647,  653,  659,
+    661,  673,  677,  683,  691,  701,  709,  719,  727,  733,  739,  743,
+    751,  757,  761,  769,  773,  787,  797,  809,  811,  821,  823,  827,
+    829,  839,  853,  857,  859,  863,  877,  881,  883,  887,  907,  911,
+    919,  929,  937,  941,  947,  953,  967,  971,  977,  983,  991,  997,
+    1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069,
+    1087, 1091, 1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163,
+    1171, 1181, 1187, 1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249,
+    1259, 1277, 1279, 1283, 1289, 1291, 1297, 1301, 1303, 1307, 1319, 1321,
+    1327, 1361, 1367, 1373, 1381, 1399, 1409, 1423, 1427, 1429, 1433, 1439,
+    1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, 1499, 1511,
+    1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583, 1597, 1601,
+    1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693,
+    1697, 1699, 1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783,
+    1787, 1789, 1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877,
+    1879, 1889, 1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987,
+    1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, 2039, 2053, 2063, 2069,
+    2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137, 2141, 2143,
+    2153, 2161, 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251, 2267,
+    2269, 2273, 2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347,
+    2351, 2357, 2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423,
+    2437, 2441, 2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531, 2539, 2543,
+    2549, 2551, 2557, 2579, 2591, 2593, 2609, 2617, 2621, 2633, 2647, 2657,
+    2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, 2699, 2707, 2711, 2713,
+    2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, 2797, 2801,
+    2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903,
+    2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, 3001, 3011,
+    3019, 3023, 3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119,
+    3121, 3137, 3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221,
+    3229, 3251, 3253, 3257, 3259, 3271, 3299, 3301, 3307, 3313, 3319, 3323,
+    3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391, 3407, 3413,
+    3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, 3517, 3527,
+    3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607,
+    3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697,
+    3701, 3709, 3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797,
+    3803, 3821, 3823, 3833, 3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907,
+    3911, 3917, 3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989, 4001, 4003,
+    4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057, 4073, 4079, 4091, 4093,
+    4099, 4111, 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, 4201, 4211,
+    4217, 4219, 4229, 4231, 4241, 4243, 4253, 4259, 4261, 4271, 4273, 4283,
+    4289, 4297, 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, 4397, 4409,
+    4421, 4423, 4441, 4447, 4451, 4457, 4463, 4481, 4483, 4493, 4507, 4513,
+    4517, 4519, 4523, 4547, 4549, 4561, 4567, 4583, 4591, 4597, 4603, 4621,
+    4637, 4639, 4643, 4649, 4651, 4657, 4663, 4673, 4679, 4691, 4703, 4721,
+    4723, 4729, 4733, 4751, 4759, 4783, 4787, 4789, 4793, 4799, 4801, 4813,
+    4817, 4831, 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, 4933, 4937,
+    4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5003, 5009, 5011,
+    5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087, 5099, 5101, 5107, 5113,
+    5119, 5147, 5153, 5167, 5171, 5179, 5189, 5197, 5209, 5227, 5231, 5233,
+    5237, 5261, 5273, 5279, 5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351,
+    5381, 5387, 5393, 5399, 5407, 5413, 5417, 5419, 5431, 5437, 5441, 5443,
+    5449, 5471, 5477, 5479, 5483, 5501, 5503, 5507, 5519, 5521, 5527, 5531,
+    5557, 5563, 5569, 5573, 5581, 5591, 5623, 5639, 5641, 5647, 5651, 5653,
+    5657, 5659, 5669, 5683, 5689, 5693, 5701, 5711, 5717, 5737, 5741, 5743,
+    5749, 5779, 5783, 5791, 5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849,
+    5851, 5857, 5861, 5867, 5869, 5879, 5881, 5897, 5903, 5923, 5927, 5939,
+    5953, 5981, 5987, 6007, 6011, 6029, 6037, 6043, 6047, 6053, 6067, 6073,
+    6079, 6089, 6091, 6101, 6113, 6121, 6131, 6133, 6143, 6151, 6163, 6173,
+    6197, 6199, 6203, 6211, 6217, 6221, 6229, 6247, 6257, 6263, 6269, 6271,
+    6277, 6287, 6299, 6301, 6311, 6317, 6323, 6329, 6337, 6343, 6353, 6359,
+    6361, 6367, 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451, 6469, 6473,
+    6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571, 6577, 6581,
+    6599, 6607, 6619, 6637, 6653, 6659, 6661, 6673, 6679, 6689, 6691, 6701,
+    6703, 6709, 6719, 6733, 6737, 6761, 6763, 6779, 6781, 6791, 6793, 6803,
+    6823, 6827, 6829, 6833, 6841, 6857, 6863, 6869, 6871, 6883, 6899, 6907,
+    6911, 6917, 6947, 6949, 6959, 6961, 6967, 6971, 6977, 6983, 6991, 6997,
+    7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, 7109, 7121,
+    7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229,
+    7237, 7243, 7247, 7253, 7283, 7297, 7307, 7309, 7321, 7331, 7333, 7349,
+    7351, 7369, 7393, 7411, 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487,
+    7489, 7499, 7507, 7517, 7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561,
+    7573, 7577, 7583, 7589, 7591, 7603, 7607, 7621, 7639, 7643, 7649, 7669,
+    7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, 7727, 7741, 7753, 7757,
+    7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873, 7877, 7879,
+    7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993, 8009,
+    8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111,
+    8117, 8123, 8147, 8161,
+};
+
+// BN_prime_checks_for_size returns the number of Miller-Rabin iterations
+// necessary for generating a 'bits'-bit candidate prime.
+//
+//
+// This table is generated using the algorithm of FIPS PUB 186-4
+// Digital Signature Standard (DSS), section F.1, page 117.
+// (https://doi.org/10.6028/NIST.FIPS.186-4)
+// The following magma script was used to generate the output:
+// securitybits:=125;
+// k:=1024;
+// for t:=1 to 65 do
+//   for M:=3 to Floor(2*Sqrt(k-1)-1) do
+//     S:=0;
+//     // Sum over m
+//     for m:=3 to M do
+//       s:=0;
+//       // Sum over j
+//       for j:=2 to m do
+//         s+:=(RealField(32)!2)^-(j+(k-1)/j);
+//       end for;
+//       S+:=2^(m-(m-1)*t)*s;
+//     end for;
+//     A:=2^(k-2-M*t);
+//     B:=8*(Pi(RealField(32))^2-6)/3*2^(k-2)*S;
+//     pkt:=2.00743*Log(2)*k*2^-k*(A+B);
+//     seclevel:=Floor(-Log(2,pkt));
+//     if seclevel ge securitybits then
+//       printf "k: %5o, security: %o bits  (t: %o, M: %o)\n",k,seclevel,t,M;
+//       break;
+//     end if;
+//   end for;
+//   if seclevel ge securitybits then break; end if;
+// end for;
+//
+// It can be run online at: http://magma.maths.usyd.edu.au/calc
+// And will output:
+// k:  1024, security: 129 bits  (t: 6, M: 23)
+// k is the number of bits of the prime, securitybits is the level we want to
+// reach.
+// prime length | RSA key size | # MR tests | security level
+// -------------+--------------|------------+---------------
+//  (b) >= 6394 |     >= 12788 |          3 |        256 bit
+//  (b) >= 3747 |     >=  7494 |          3 |        192 bit
+//  (b) >= 1345 |     >=  2690 |          4 |        128 bit
+//  (b) >= 1080 |     >=  2160 |          5 |        128 bit
+//  (b) >=  852 |     >=  1704 |          5 |        112 bit
+//  (b) >=  476 |     >=   952 |          5 |         80 bit
+//  (b) >=  400 |     >=   800 |          6 |         80 bit
+//  (b) >=  347 |     >=   694 |          7 |         80 bit
+//  (b) >=  308 |     >=   616 |          8 |         80 bit
+//  (b) >=   55 |     >=   110 |         27 |         64 bit
+//  (b) >=    6 |     >=    12 |         34 |         64 bit
+static int BN_prime_checks_for_size(int bits) {
+  if (bits >= 3747) {
+    return 3;
+  }
+  if (bits >= 1345) {
+    return 4;
+  }
+  if (bits >= 476) {
+    return 5;
+  }
+  if (bits >= 400) {
+    return 6;
+  }
+  if (bits >= 347) {
+    return 7;
+  }
+  if (bits >= 308) {
+    return 8;
+  }
+  if (bits >= 55) {
+    return 27;
+  }
+  return 34;
+}
+
+// num_trial_division_primes returns the number of primes to try with trial
+// division before using more expensive checks. For larger numbers, the value
+// of excluding a candidate with trial division is larger.
+static size_t num_trial_division_primes(const BIGNUM *n) {
+  if (n->width * BN_BITS2 > 1024) {
+    return OPENSSL_ARRAY_SIZE(kPrimes);
+  }
+  return OPENSSL_ARRAY_SIZE(kPrimes) / 2;
+}
+
+// BN_PRIME_CHECKS_BLINDED is the iteration count for blinding the constant-time
+// primality test. See |BN_primality_test| for details. This number is selected
+// so that, for a candidate N-bit RSA prime, picking |BN_PRIME_CHECKS_BLINDED|
+// random N-bit numbers will have at least |BN_prime_checks_for_size(N)| values
+// in range with high probability.
+//
+// The following Python script computes the blinding factor needed for the
+// corresponding iteration count.
+/*
+import math
+
+# We choose candidate RSA primes between sqrt(2)/2 * 2^N and 2^N and select
+# witnesses by generating random N-bit numbers. Thus the probability of
+# selecting one in range is at least sqrt(2)/2.
+p = math.sqrt(2) / 2
+
+# Target around 2^-8 probability of the blinding being insufficient given that
+# key generation is a one-time, noisy operation.
+epsilon = 2**-8
+
+def choose(a, b):
+  r = 1
+  for i in xrange(b):
+    r *= a - i
+    r /= (i + 1)
+  return r
+
+def failure_rate(min_uniform, iterations):
+  """ Returns the probability that, for |iterations| candidate witnesses, fewer
+      than |min_uniform| of them will be uniform. """
+  prob = 0.0
+  for i in xrange(min_uniform):
+    prob += (choose(iterations, i) *
+             p**i * (1-p)**(iterations - i))
+  return prob
+
+for min_uniform in (3, 4, 5, 6, 8, 13, 19, 28):
+  # Find the smallest number of iterations under the target failure rate.
+  iterations = min_uniform
+  while True:
+    prob = failure_rate(min_uniform, iterations)
+    if prob < epsilon:
+      print min_uniform, iterations, prob
+      break
+    iterations += 1
+
+Output:
+  3 9 0.00368894873911
+  4 11 0.00363319494662
+  5 13 0.00336215573898
+  6 15 0.00300145783158
+  8 19 0.00225214119331
+  13 27 0.00385610026955
+  19 38 0.0021410539126
+  28 52 0.00325405801769
+
+16 iterations suffices for 400-bit primes and larger (6 uniform samples needed),
+which is already well below the minimum acceptable key size for RSA.
+*/
+#define BN_PRIME_CHECKS_BLINDED 16
+
+static int probable_prime(BIGNUM *rnd, int bits);
+static int probable_prime_dh(BIGNUM *rnd, int bits, const BIGNUM *add,
+                             const BIGNUM *rem, BN_CTX *ctx);
+static int probable_prime_dh_safe(BIGNUM *rnd, int bits, const BIGNUM *add,
+                                  const BIGNUM *rem, BN_CTX *ctx);
+
+void BN_GENCB_set(BN_GENCB *callback,
+                  int (*f)(int event, int n, struct bn_gencb_st *),
+                  void *arg) {
+  callback->callback = f;
+  callback->arg = arg;
+}
+
+int BN_GENCB_call(BN_GENCB *callback, int event, int n) {
+  if (!callback) {
+    return 1;
+  }
+
+  return callback->callback(event, n, callback);
+}
+
+int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe, const BIGNUM *add,
+                         const BIGNUM *rem, BN_GENCB *cb) {
+  BIGNUM *t;
+  int found = 0;
+  int i, j, c1 = 0;
+  BN_CTX *ctx;
+  int checks = BN_prime_checks_for_size(bits);
+
+  if (bits < 2) {
+    // There are no prime numbers this small.
+    OPENSSL_PUT_ERROR(BN, BN_R_BITS_TOO_SMALL);
+    return 0;
+  } else if (bits == 2 && safe) {
+    // The smallest safe prime (7) is three bits.
+    OPENSSL_PUT_ERROR(BN, BN_R_BITS_TOO_SMALL);
+    return 0;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  t = BN_CTX_get(ctx);
+  if (!t) {
+    goto err;
+  }
+
+loop:
+  // make a random number and set the top and bottom bits
+  if (add == NULL) {
+    if (!probable_prime(ret, bits)) {
+      goto err;
+    }
+  } else {
+    if (safe) {
+      if (!probable_prime_dh_safe(ret, bits, add, rem, ctx)) {
+        goto err;
+      }
+    } else {
+      if (!probable_prime_dh(ret, bits, add, rem, ctx)) {
+        goto err;
+      }
+    }
+  }
+
+  if (!BN_GENCB_call(cb, BN_GENCB_GENERATED, c1++)) {
+    // aborted
+    goto err;
+  }
+
+  if (!safe) {
+    i = BN_is_prime_fasttest_ex(ret, checks, ctx, 0, cb);
+    if (i == -1) {
+      goto err;
+    } else if (i == 0) {
+      goto loop;
+    }
+  } else {
+    // for "safe prime" generation, check that (p-1)/2 is prime. Since a prime
+    // is odd, We just need to divide by 2
+    if (!BN_rshift1(t, ret)) {
+      goto err;
+    }
+
+    // Interleave |ret| and |t|'s primality tests to avoid paying the full
+    // iteration count on |ret| only to quickly discover |t| is composite.
+    //
+    // TODO(davidben): This doesn't quite work because an iteration count of 1
+    // still runs the blinding mechanism.
+    for (i = 0; i < checks; i++) {
+      j = BN_is_prime_fasttest_ex(ret, 1, ctx, 0, NULL);
+      if (j == -1) {
+        goto err;
+      } else if (j == 0) {
+        goto loop;
+      }
+
+      j = BN_is_prime_fasttest_ex(t, 1, ctx, 0, NULL);
+      if (j == -1) {
+        goto err;
+      } else if (j == 0) {
+        goto loop;
+      }
+
+      if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i)) {
+        goto err;
+      }
+      // We have a safe prime test pass
+    }
+  }
+
+  // we have a prime :-)
+  found = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+
+  return found;
+}
+
+static int bn_trial_division(uint16_t *out, const BIGNUM *bn) {
+  const size_t num_primes = num_trial_division_primes(bn);
+  for (size_t i = 1; i < num_primes; i++) {
+    if (bn_mod_u16_consttime(bn, kPrimes[i]) == 0) {
+      *out = kPrimes[i];
+      return 1;
+    }
+  }
+  return 0;
+}
+
+int bn_odd_number_is_obviously_composite(const BIGNUM *bn) {
+  uint16_t prime;
+  return bn_trial_division(&prime, bn) && !BN_is_word(bn, prime);
+}
+
+int bn_miller_rabin_init(BN_MILLER_RABIN *miller_rabin, const BN_MONT_CTX *mont,
+                         BN_CTX *ctx) {
+  // This function corresponds to steps 1 through 3 of FIPS 186-4, C.3.1.
+  const BIGNUM *w = &mont->N;
+  // Note we do not call |BN_CTX_start| in this function. We intentionally
+  // allocate values in the containing scope so they outlive this function.
+  miller_rabin->w1 = BN_CTX_get(ctx);
+  miller_rabin->m = BN_CTX_get(ctx);
+  miller_rabin->one_mont = BN_CTX_get(ctx);
+  miller_rabin->w1_mont = BN_CTX_get(ctx);
+  if (miller_rabin->w1 == NULL ||
+      miller_rabin->m == NULL ||
+      miller_rabin->one_mont == NULL ||
+      miller_rabin->w1_mont == NULL) {
+    return 0;
+  }
+
+  // See FIPS 186-4, C.3.1, steps 1 through 3.
+  if (!bn_usub_consttime(miller_rabin->w1, w, BN_value_one())) {
+    return 0;
+  }
+  miller_rabin->a = BN_count_low_zero_bits(miller_rabin->w1);
+  if (!bn_rshift_secret_shift(miller_rabin->m, miller_rabin->w1,
+                              miller_rabin->a, ctx)) {
+    return 0;
+  }
+  miller_rabin->w_bits = BN_num_bits(w);
+
+  // Precompute some values in Montgomery form.
+  if (!bn_one_to_montgomery(miller_rabin->one_mont, mont, ctx) ||
+      // w - 1 is -1 mod w, so we can compute it in the Montgomery domain, -R,
+      // with a subtraction. (|one_mont| cannot be zero.)
+      !bn_usub_consttime(miller_rabin->w1_mont, w, miller_rabin->one_mont)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int bn_miller_rabin_iteration(const BN_MILLER_RABIN *miller_rabin,
+                              int *out_is_possibly_prime, const BIGNUM *b,
+                              const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // This function corresponds to steps 4.3 through 4.5 of FIPS 186-4, C.3.1.
+  int ret = 0;
+  BN_CTX_start(ctx);
+
+  // Step 4.3. We use Montgomery-encoding for better performance and to avoid
+  // timing leaks.
+  const BIGNUM *w = &mont->N;
+  BIGNUM *z = BN_CTX_get(ctx);
+  if (z == NULL ||
+      !BN_mod_exp_mont_consttime(z, b, miller_rabin->m, w, ctx, mont) ||
+      !BN_to_montgomery(z, z, mont, ctx)) {
+    goto err;
+  }
+
+  // is_possibly_prime is all ones if we have determined |b| is not a composite
+  // witness for |w|. This is equivalent to going to step 4.7 in the original
+  // algorithm. To avoid timing leaks, we run the algorithm to the end for prime
+  // inputs.
+  crypto_word_t is_possibly_prime = 0;
+
+  // Step 4.4. If z = 1 or z = w-1, b is not a composite witness and w is still
+  // possibly prime.
+  is_possibly_prime = BN_equal_consttime(z, miller_rabin->one_mont) |
+                      BN_equal_consttime(z, miller_rabin->w1_mont);
+  is_possibly_prime = 0 - is_possibly_prime;  // Make it all zeros or all ones.
+
+  // Step 4.5.
+  //
+  // To avoid leaking |a|, we run the loop to |w_bits| and mask off all
+  // iterations once |j| = |a|.
+  for (int j = 1; j < miller_rabin->w_bits; j++) {
+    if (constant_time_eq_int(j, miller_rabin->a) & ~is_possibly_prime) {
+      // If the loop is done and we haven't seen z = 1 or z = w-1 yet, the
+      // value is composite and we can break in variable time.
+      break;
+    }
+
+    // Step 4.5.1.
+    if (!BN_mod_mul_montgomery(z, z, z, mont, ctx)) {
+      goto err;
+    }
+
+    // Step 4.5.2. If z = w-1 and the loop is not done, this is not a composite
+    // witness.
+    crypto_word_t z_is_w1_mont = BN_equal_consttime(z, miller_rabin->w1_mont);
+    z_is_w1_mont = 0 - z_is_w1_mont;    // Make it all zeros or all ones.
+    is_possibly_prime |= z_is_w1_mont;  // Go to step 4.7 if |z_is_w1_mont|.
+
+    // Step 4.5.3. If z = 1 and the loop is not done, the previous value of z
+    // was not -1. There are no non-trivial square roots of 1 modulo a prime, so
+    // w is composite and we may exit in variable time.
+    if (BN_equal_consttime(z, miller_rabin->one_mont) & ~is_possibly_prime) {
+      break;
+    }
+  }
+
+  *out_is_possibly_prime = is_possibly_prime & 1;
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_primality_test(int *out_is_probably_prime, const BIGNUM *w, int checks,
+                      BN_CTX *ctx, int do_trial_division, BN_GENCB *cb) {
+  // This function's secrecy and performance requirements come from RSA key
+  // generation. We generate RSA keys by selecting two large, secret primes with
+  // rejection sampling.
+  //
+  // We thus treat |w| as secret if turns out to be a large prime. However, if
+  // |w| is composite, we treat this and |w| itself as public. (Conversely, if
+  // |w| is prime, that it is prime is public. Only the value is secret.) This
+  // is fine for RSA key generation, but note it is important that we use
+  // rejection sampling, with each candidate prime chosen independently. This
+  // would not work for, e.g., an algorithm which looked for primes in
+  // consecutive integers. These assumptions allow us to discard composites
+  // quickly. We additionally treat |w| as public when it is a small prime to
+  // simplify trial decryption and some edge cases.
+  //
+  // One RSA key generation will call this function on exactly two primes and
+  // many more composites. The overall cost is a combination of several factors:
+  //
+  // 1. Checking if |w| is divisible by a small prime is much faster than
+  //    learning it is composite by Miller-Rabin (see below for details on that
+  //    cost). Trial division by p saves 1/p of Miller-Rabin calls, so this is
+  //    worthwhile until p exceeds the ratio of the two costs.
+  //
+  // 2. For a random (i.e. non-adversarial) candidate large prime and candidate
+  //    witness, the probability of false witness is very low. (This is why FIPS
+  //    186-4 only requires a few iterations.) Thus composites not discarded by
+  //    trial decryption, in practice, cost one Miller-Rabin iteration. Only the
+  //    two actual primes cost the full iteration count.
+  //
+  // 3. A Miller-Rabin iteration is a modular exponentiation plus |a| additional
+  //    modular squares, where |a| is the number of factors of two in |w-1|. |a|
+  //    is likely small (the distribution falls exponentially), but it is also
+  //    potentially secret, so we loop up to its log(w) upper bound when |w| is
+  //    prime. When |w| is composite, we break early, so only two calls pay this
+  //    cost. (Note that all calls pay the modular exponentiation which is,
+  //    itself, log(w) modular multiplications and squares.)
+  //
+  // 4. While there are only two prime calls, they multiplicatively pay the full
+  //    costs of (2) and (3).
+  //
+  // 5. After the primes are chosen, RSA keys derive some values from the
+  //    primes, but this cost is negligible in comparison.
+
+  *out_is_probably_prime = 0;
+
+  if (BN_cmp(w, BN_value_one()) <= 0) {
+    return 1;
+  }
+
+  if (!BN_is_odd(w)) {
+    // The only even prime is two.
+    *out_is_probably_prime = BN_is_word(w, 2);
+    return 1;
+  }
+
+  // Miller-Rabin does not work for three.
+  if (BN_is_word(w, 3)) {
+    *out_is_probably_prime = 1;
+    return 1;
+  }
+
+  if (do_trial_division) {
+    // Perform additional trial division checks to discard small primes.
+    uint16_t prime;
+    if (bn_trial_division(&prime, w)) {
+      *out_is_probably_prime = BN_is_word(w, prime);
+      return 1;
+    }
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, -1)) {
+      return 0;
+    }
+  }
+
+  if (checks == BN_prime_checks_for_generation) {
+    checks = BN_prime_checks_for_size(BN_num_bits(w));
+  }
+
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      return 0;
+    }
+    ctx = new_ctx;
+  }
+
+  // See C.3.1 from FIPS 186-4.
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *b = BN_CTX_get(ctx);
+  BN_MONT_CTX *mont = BN_MONT_CTX_new_consttime(w, ctx);
+  BN_MILLER_RABIN miller_rabin;
+  if (b == NULL || mont == NULL ||
+      // Steps 1-3.
+      !bn_miller_rabin_init(&miller_rabin, mont, ctx)) {
+    goto err;
+  }
+
+  // The following loop performs in inner iteration of the Miller-Rabin
+  // Primality test (Step 4).
+  //
+  // The algorithm as specified in FIPS 186-4 leaks information on |w|, the RSA
+  // private key. Instead, we run through each iteration unconditionally,
+  // performing modular multiplications, masking off any effects to behave
+  // equivalently to the specified algorithm.
+  //
+  // We also blind the number of values of |b| we try. Steps 4.1–4.2 say to
+  // discard out-of-range values. To avoid leaking information on |w|, we use
+  // |bn_rand_secret_range| which, rather than discarding bad values, adjusts
+  // them to be in range. Though not uniformly selected, these adjusted values
+  // are still usable as Miller-Rabin checks.
+  //
+  // Miller-Rabin is already probabilistic, so we could reach the desired
+  // confidence levels by just suitably increasing the iteration count. However,
+  // to align with FIPS 186-4, we use a more pessimal analysis: we do not count
+  // the non-uniform values towards the iteration count. As a result, this
+  // function is more complex and has more timing risk than necessary.
+  //
+  // We count both total iterations and uniform ones and iterate until we've
+  // reached at least |BN_PRIME_CHECKS_BLINDED| and |iterations|, respectively.
+  // If the latter is large enough, it will be the limiting factor with high
+  // probability and we won't leak information.
+  //
+  // Note this blinding does not impact most calls when picking primes because
+  // composites are rejected early. Only the two secret primes see extra work.
+
+  crypto_word_t uniform_iterations = 0;
+  // Using |constant_time_lt_w| seems to prevent the compiler from optimizing
+  // this into two jumps.
+  for (int i = 1; (i <= BN_PRIME_CHECKS_BLINDED) |
+                  constant_time_lt_w(uniform_iterations, checks);
+       i++) {
+    // Step 4.1-4.2
+    int is_uniform;
+    if (!bn_rand_secret_range(b, &is_uniform, 2, miller_rabin.w1)) {
+        goto err;
+    }
+    uniform_iterations += is_uniform;
+
+    // Steps 4.3-4.5
+    int is_possibly_prime = 0;
+    if (!bn_miller_rabin_iteration(&miller_rabin, &is_possibly_prime, b, mont,
+                                   ctx)) {
+      goto err;
+    }
+
+    if (!is_possibly_prime) {
+      // Step 4.6. We did not see z = w-1 before z = 1, so w must be composite.
+      *out_is_probably_prime = 0;
+      ret = 1;
+      goto err;
+    }
+
+    // Step 4.7
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i - 1)) {
+      goto err;
+    }
+  }
+
+  assert(uniform_iterations >= (crypto_word_t)checks);
+  *out_is_probably_prime = 1;
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(mont);
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int BN_is_prime_ex(const BIGNUM *candidate, int checks, BN_CTX *ctx,
+                   BN_GENCB *cb) {
+  return BN_is_prime_fasttest_ex(candidate, checks, ctx, 0, cb);
+}
+
+int BN_is_prime_fasttest_ex(const BIGNUM *a, int checks, BN_CTX *ctx,
+                            int do_trial_division, BN_GENCB *cb) {
+  int is_probably_prime;
+  if (!BN_primality_test(&is_probably_prime, a, checks, ctx, do_trial_division,
+                         cb)) {
+    return -1;
+  }
+  return is_probably_prime;
+}
+
+int BN_enhanced_miller_rabin_primality_test(
+    enum bn_primality_result_t *out_result, const BIGNUM *w, int checks,
+    BN_CTX *ctx, BN_GENCB *cb) {
+  // Enhanced Miller-Rabin is only valid on odd integers greater than 3.
+  if (!BN_is_odd(w) || BN_cmp_word(w, 3) <= 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_INPUT);
+    return 0;
+  }
+
+  if (checks == BN_prime_checks_for_generation) {
+    checks = BN_prime_checks_for_size(BN_num_bits(w));
+  }
+
+  int ret = 0;
+  BN_MONT_CTX *mont = NULL;
+
+  BN_CTX_start(ctx);
+
+  BIGNUM *w1 = BN_CTX_get(ctx);
+  if (w1 == NULL ||
+      !BN_copy(w1, w) ||
+      !BN_sub_word(w1, 1)) {
+    goto err;
+  }
+
+  // Write w1 as m*2^a (Steps 1 and 2).
+  int a = 0;
+  while (!BN_is_bit_set(w1, a)) {
+    a++;
+  }
+  BIGNUM *m = BN_CTX_get(ctx);
+  if (m == NULL ||
+      !BN_rshift(m, w1, a)) {
+    goto err;
+  }
+
+  BIGNUM *b = BN_CTX_get(ctx);
+  BIGNUM *g = BN_CTX_get(ctx);
+  BIGNUM *z = BN_CTX_get(ctx);
+  BIGNUM *x = BN_CTX_get(ctx);
+  BIGNUM *x1 = BN_CTX_get(ctx);
+  if (b == NULL ||
+      g == NULL ||
+      z == NULL ||
+      x == NULL ||
+      x1 == NULL) {
+    goto err;
+  }
+
+  // Montgomery setup for computations mod w
+  mont = BN_MONT_CTX_new_for_modulus(w, ctx);
+  if (mont == NULL) {
+    goto err;
+  }
+
+  // The following loop performs in inner iteration of the Enhanced Miller-Rabin
+  // Primality test (Step 4).
+  for (int i = 1; i <= checks; i++) {
+    // Step 4.1-4.2
+    if (!BN_rand_range_ex(b, 2, w1)) {
+      goto err;
+    }
+
+    // Step 4.3-4.4
+    if (!BN_gcd(g, b, w, ctx)) {
+      goto err;
+    }
+    if (BN_cmp_word(g, 1) > 0) {
+      *out_result = bn_composite;
+      ret = 1;
+      goto err;
+    }
+
+    // Step 4.5
+    if (!BN_mod_exp_mont(z, b, m, w, ctx, mont)) {
+      goto err;
+    }
+
+    // Step 4.6
+    if (BN_is_one(z) || BN_cmp(z, w1) == 0) {
+      goto loop;
+    }
+
+    // Step 4.7
+    for (int j = 1; j < a; j++) {
+      if (!BN_copy(x, z) || !BN_mod_mul(z, x, x, w, ctx)) {
+        goto err;
+      }
+      if (BN_cmp(z, w1) == 0) {
+        goto loop;
+      }
+      if (BN_is_one(z)) {
+        goto composite;
+      }
+    }
+
+    // Step 4.8-4.9
+    if (!BN_copy(x, z) || !BN_mod_mul(z, x, x, w, ctx)) {
+      goto err;
+    }
+
+    // Step 4.10-4.11
+    if (!BN_is_one(z) && !BN_copy(x, z)) {
+      goto err;
+    }
+
+ composite:
+    // Step 4.12-4.14
+    if (!BN_copy(x1, x) ||
+        !BN_sub_word(x1, 1) ||
+        !BN_gcd(g, x1, w, ctx)) {
+      goto err;
+    }
+    if (BN_cmp_word(g, 1) > 0) {
+      *out_result = bn_composite;
+    } else {
+      *out_result = bn_non_prime_power_composite;
+    }
+
+    ret = 1;
+    goto err;
+
+ loop:
+    // Step 4.15
+    if (!BN_GENCB_call(cb, BN_GENCB_PRIME_TEST, i - 1)) {
+      goto err;
+    }
+  }
+
+  *out_result = bn_probably_prime;
+  ret = 1;
+
+err:
+  BN_MONT_CTX_free(mont);
+  BN_CTX_end(ctx);
+
+  return ret;
+}
+
+static int probable_prime(BIGNUM *rnd, int bits) {
+  do {
+    if (!BN_rand(rnd, bits, BN_RAND_TOP_TWO, BN_RAND_BOTTOM_ODD)) {
+      return 0;
+    }
+  } while (bn_odd_number_is_obviously_composite(rnd));
+  return 1;
+}
+
+static int probable_prime_dh(BIGNUM *rnd, int bits, const BIGNUM *add,
+                             const BIGNUM *rem, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t1;
+
+  BN_CTX_start(ctx);
+  if ((t1 = BN_CTX_get(ctx)) == NULL) {
+    goto err;
+  }
+
+  if (!BN_rand(rnd, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD)) {
+    goto err;
+  }
+
+  // we need ((rnd-rem) % add) == 0
+
+  if (!BN_mod(t1, rnd, add, ctx)) {
+    goto err;
+  }
+  if (!BN_sub(rnd, rnd, t1)) {
+    goto err;
+  }
+  if (rem == NULL) {
+    if (!BN_add_word(rnd, 1)) {
+      goto err;
+    }
+  } else {
+    if (!BN_add(rnd, rnd, rem)) {
+      goto err;
+    }
+  }
+  // we now have a random number 'rand' to test.
+
+  const size_t num_primes = num_trial_division_primes(rnd);
+loop:
+  for (size_t i = 1; i < num_primes; i++) {
+    // check that rnd is a prime
+    if (bn_mod_u16_consttime(rnd, kPrimes[i]) <= 1) {
+      if (!BN_add(rnd, rnd, add)) {
+        goto err;
+      }
+      goto loop;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int probable_prime_dh_safe(BIGNUM *p, int bits, const BIGNUM *padd,
+                                  const BIGNUM *rem, BN_CTX *ctx) {
+  int ret = 0;
+  BIGNUM *t1, *qadd, *q;
+
+  bits--;
+  BN_CTX_start(ctx);
+  t1 = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  qadd = BN_CTX_get(ctx);
+  if (qadd == NULL) {
+    goto err;
+  }
+
+  if (!BN_rshift1(qadd, padd)) {
+    goto err;
+  }
+
+  if (!BN_rand(q, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD)) {
+    goto err;
+  }
+
+  // we need ((rnd-rem) % add) == 0
+  if (!BN_mod(t1, q, qadd, ctx)) {
+    goto err;
+  }
+
+  if (!BN_sub(q, q, t1)) {
+    goto err;
+  }
+
+  if (rem == NULL) {
+    if (!BN_add_word(q, 1)) {
+      goto err;
+    }
+  } else {
+    if (!BN_rshift1(t1, rem)) {
+      goto err;
+    }
+    if (!BN_add(q, q, t1)) {
+      goto err;
+    }
+  }
+
+  // we now have a random number 'rand' to test.
+  if (!BN_lshift1(p, q)) {
+    goto err;
+  }
+  if (!BN_add_word(p, 1)) {
+    goto err;
+  }
+
+  const size_t num_primes = num_trial_division_primes(p);
+loop:
+  for (size_t i = 1; i < num_primes; i++) {
+    // check that p and q are prime
+    // check that for p and q
+    // gcd(p-1,primes) == 1 (except for 2)
+    if (bn_mod_u16_consttime(p, kPrimes[i]) == 0 ||
+        bn_mod_u16_consttime(q, kPrimes[i]) == 0) {
+      if (!BN_add(p, p, padd)) {
+        goto err;
+      }
+      if (!BN_add(q, q, qadd)) {
+        goto err;
+      }
+      goto loop;
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c
new file mode 100644
index 0000000..cef812c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c	
@@ -0,0 +1,341 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../rand/internal.h"
+
+
+int BN_rand(BIGNUM *rnd, int bits, int top, int bottom) {
+  if (rnd == NULL) {
+    return 0;
+  }
+
+  if (top != BN_RAND_TOP_ANY && top != BN_RAND_TOP_ONE &&
+      top != BN_RAND_TOP_TWO) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (bottom != BN_RAND_BOTTOM_ANY && bottom != BN_RAND_BOTTOM_ODD) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (bits == 0) {
+    BN_zero(rnd);
+    return 1;
+  }
+
+  if (bits > INT_MAX - (BN_BITS2 - 1)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+
+  int words = (bits + BN_BITS2 - 1) / BN_BITS2;
+  int bit = (bits - 1) % BN_BITS2;
+  const BN_ULONG kOne = 1;
+  const BN_ULONG kThree = 3;
+  BN_ULONG mask = bit < BN_BITS2 - 1 ? (kOne << (bit + 1)) - 1 : BN_MASK2;
+  if (!bn_wexpand(rnd, words)) {
+    return 0;
+  }
+
+  RAND_bytes((uint8_t *)rnd->d, words * sizeof(BN_ULONG));
+  rnd->d[words - 1] &= mask;
+  if (top != BN_RAND_TOP_ANY) {
+    if (top == BN_RAND_TOP_TWO && bits > 1) {
+      if (bit == 0) {
+        rnd->d[words - 1] |= 1;
+        rnd->d[words - 2] |= kOne << (BN_BITS2 - 1);
+      } else {
+        rnd->d[words - 1] |= kThree << (bit - 1);
+      }
+    } else {
+      rnd->d[words - 1] |= kOne << bit;
+    }
+  }
+  if (bottom == BN_RAND_BOTTOM_ODD) {
+    rnd->d[0] |= 1;
+  }
+
+  rnd->neg = 0;
+  rnd->width = words;
+  return 1;
+}
+
+int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom) {
+  return BN_rand(rnd, bits, top, bottom);
+}
+
+// bn_less_than_word_mask returns a mask of all ones if the number represented
+// by |len| words at |a| is less than |b| and zero otherwise. It performs this
+// computation in time independent of the value of |a|. |b| is assumed public.
+static crypto_word_t bn_less_than_word_mask(const BN_ULONG *a, size_t len,
+                                            BN_ULONG b) {
+  if (b == 0) {
+    return CONSTTIME_FALSE_W;
+  }
+  if (len == 0) {
+    return CONSTTIME_TRUE_W;
+  }
+
+  // |a| < |b| iff a[1..len-1] are all zero and a[0] < b.
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  crypto_word_t mask = 0;
+  for (size_t i = 1; i < len; i++) {
+    mask |= a[i];
+  }
+  // |mask| is now zero iff a[1..len-1] are all zero.
+  mask = constant_time_is_zero_w(mask);
+  mask &= constant_time_lt_w(a[0], b);
+  return mask;
+}
+
+int bn_in_range_words(const BN_ULONG *a, BN_ULONG min_inclusive,
+                      const BN_ULONG *max_exclusive, size_t len) {
+  crypto_word_t mask = ~bn_less_than_word_mask(a, len, min_inclusive);
+  return mask & bn_less_than_words(a, max_exclusive, len);
+}
+
+static int bn_range_to_mask(size_t *out_words, BN_ULONG *out_mask,
+                            size_t min_inclusive, const BN_ULONG *max_exclusive,
+                            size_t len) {
+  // The magnitude of |max_exclusive| is assumed public.
+  size_t words = len;
+  while (words > 0 && max_exclusive[words - 1] == 0) {
+    words--;
+  }
+  if (words == 0 ||
+      (words == 1 && max_exclusive[0] <= min_inclusive)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_RANGE);
+    return 0;
+  }
+  BN_ULONG mask = max_exclusive[words - 1];
+  // This sets all bits in |mask| below the most significant bit.
+  mask |= mask >> 1;
+  mask |= mask >> 2;
+  mask |= mask >> 4;
+  mask |= mask >> 8;
+  mask |= mask >> 16;
+#if defined(OPENSSL_64_BIT)
+  mask |= mask >> 32;
+#endif
+
+  *out_words = words;
+  *out_mask = mask;
+  return 1;
+}
+
+int bn_rand_range_words(BN_ULONG *out, BN_ULONG min_inclusive,
+                        const BN_ULONG *max_exclusive, size_t len,
+                        const uint8_t additional_data[32]) {
+  // This function implements the equivalent of steps 4 through 7 of FIPS 186-4
+  // appendices B.4.2 and B.5.2. When called in those contexts, |max_exclusive|
+  // is n and |min_inclusive| is one.
+
+  // Compute the bit length of |max_exclusive| (step 1), in terms of a number of
+  // |words| worth of entropy to fill and a mask of bits to clear in the top
+  // word.
+  size_t words;
+  BN_ULONG mask;
+  if (!bn_range_to_mask(&words, &mask, min_inclusive, max_exclusive, len)) {
+    return 0;
+  }
+
+  // Fill any unused words with zero.
+  OPENSSL_memset(out + words, 0, (len - words) * sizeof(BN_ULONG));
+
+  unsigned count = 100;
+  do {
+    if (!--count) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_ITERATIONS);
+      return 0;
+    }
+
+    // Steps 4 and 5. Use |words| and |mask| together to obtain a string of N
+    // bits, where N is the bit length of |max_exclusive|.
+    RAND_bytes_with_additional_data((uint8_t *)out, words * sizeof(BN_ULONG),
+                                    additional_data);
+    out[words - 1] &= mask;
+
+    // If out >= max_exclusive or out < min_inclusive, retry. This implements
+    // the equivalent of steps 6 and 7 without leaking the value of |out|.
+  } while (!bn_in_range_words(out, min_inclusive, max_exclusive, words));
+  return 1;
+}
+
+int BN_rand_range_ex(BIGNUM *r, BN_ULONG min_inclusive,
+                     const BIGNUM *max_exclusive) {
+  static const uint8_t kDefaultAdditionalData[32] = {0};
+  if (!bn_wexpand(r, max_exclusive->width) ||
+      !bn_rand_range_words(r->d, min_inclusive, max_exclusive->d,
+                           max_exclusive->width, kDefaultAdditionalData)) {
+    return 0;
+  }
+
+  r->neg = 0;
+  r->width = max_exclusive->width;
+  return 1;
+}
+
+int bn_rand_secret_range(BIGNUM *r, int *out_is_uniform, BN_ULONG min_inclusive,
+                         const BIGNUM *max_exclusive) {
+  size_t words;
+  BN_ULONG mask;
+  if (!bn_range_to_mask(&words, &mask, min_inclusive, max_exclusive->d,
+                        max_exclusive->width) ||
+      !bn_wexpand(r, words)) {
+    return 0;
+  }
+
+  assert(words > 0);
+  assert(mask != 0);
+  // The range must be large enough for bit tricks to fix invalid values.
+  if (words == 1 && min_inclusive > mask >> 1) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_RANGE);
+    return 0;
+  }
+
+  // Select a uniform random number with num_bits(max_exclusive) bits.
+  RAND_bytes((uint8_t *)r->d, words * sizeof(BN_ULONG));
+  r->d[words - 1] &= mask;
+
+  // Check, in constant-time, if the value is in range.
+  *out_is_uniform =
+      bn_in_range_words(r->d, min_inclusive, max_exclusive->d, words);
+  crypto_word_t in_range = *out_is_uniform;
+  in_range = 0 - in_range;
+
+  // If the value is not in range, force it to be in range.
+  r->d[0] |= constant_time_select_w(in_range, 0, min_inclusive);
+  r->d[words - 1] &= constant_time_select_w(in_range, BN_MASK2, mask >> 1);
+  assert(bn_in_range_words(r->d, min_inclusive, max_exclusive->d, words));
+
+  r->neg = 0;
+  r->width = words;
+  return 1;
+}
+
+int BN_rand_range(BIGNUM *r, const BIGNUM *range) {
+  return BN_rand_range_ex(r, 0, range);
+}
+
+int BN_pseudo_rand_range(BIGNUM *r, const BIGNUM *range) {
+  return BN_rand_range(r, range);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c.grpc_back
new file mode 100644
index 0000000..f6812f1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/random.c.grpc_back	
@@ -0,0 +1,341 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../rand/internal.h"
+
+
+int BN_rand(BIGNUM *rnd, int bits, int top, int bottom) {
+  if (rnd == NULL) {
+    return 0;
+  }
+
+  if (top != BN_RAND_TOP_ANY && top != BN_RAND_TOP_ONE &&
+      top != BN_RAND_TOP_TWO) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (bottom != BN_RAND_BOTTOM_ANY && bottom != BN_RAND_BOTTOM_ODD) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (bits == 0) {
+    BN_zero(rnd);
+    return 1;
+  }
+
+  if (bits > INT_MAX - (BN_BITS2 - 1)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG);
+    return 0;
+  }
+
+  int words = (bits + BN_BITS2 - 1) / BN_BITS2;
+  int bit = (bits - 1) % BN_BITS2;
+  const BN_ULONG kOne = 1;
+  const BN_ULONG kThree = 3;
+  BN_ULONG mask = bit < BN_BITS2 - 1 ? (kOne << (bit + 1)) - 1 : BN_MASK2;
+  if (!bn_wexpand(rnd, words)) {
+    return 0;
+  }
+
+  RAND_bytes((uint8_t *)rnd->d, words * sizeof(BN_ULONG));
+  rnd->d[words - 1] &= mask;
+  if (top != BN_RAND_TOP_ANY) {
+    if (top == BN_RAND_TOP_TWO && bits > 1) {
+      if (bit == 0) {
+        rnd->d[words - 1] |= 1;
+        rnd->d[words - 2] |= kOne << (BN_BITS2 - 1);
+      } else {
+        rnd->d[words - 1] |= kThree << (bit - 1);
+      }
+    } else {
+      rnd->d[words - 1] |= kOne << bit;
+    }
+  }
+  if (bottom == BN_RAND_BOTTOM_ODD) {
+    rnd->d[0] |= 1;
+  }
+
+  rnd->neg = 0;
+  rnd->width = words;
+  return 1;
+}
+
+int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom) {
+  return BN_rand(rnd, bits, top, bottom);
+}
+
+// bn_less_than_word_mask returns a mask of all ones if the number represented
+// by |len| words at |a| is less than |b| and zero otherwise. It performs this
+// computation in time independent of the value of |a|. |b| is assumed public.
+static crypto_word_t bn_less_than_word_mask(const BN_ULONG *a, size_t len,
+                                            BN_ULONG b) {
+  if (b == 0) {
+    return CONSTTIME_FALSE_W;
+  }
+  if (len == 0) {
+    return CONSTTIME_TRUE_W;
+  }
+
+  // |a| < |b| iff a[1..len-1] are all zero and a[0] < b.
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  crypto_word_t mask = 0;
+  for (size_t i = 1; i < len; i++) {
+    mask |= a[i];
+  }
+  // |mask| is now zero iff a[1..len-1] are all zero.
+  mask = constant_time_is_zero_w(mask);
+  mask &= constant_time_lt_w(a[0], b);
+  return mask;
+}
+
+int bn_in_range_words(const BN_ULONG *a, BN_ULONG min_inclusive,
+                      const BN_ULONG *max_exclusive, size_t len) {
+  crypto_word_t mask = ~bn_less_than_word_mask(a, len, min_inclusive);
+  return mask & bn_less_than_words(a, max_exclusive, len);
+}
+
+static int bn_range_to_mask(size_t *out_words, BN_ULONG *out_mask,
+                            size_t min_inclusive, const BN_ULONG *max_exclusive,
+                            size_t len) {
+  // The magnitude of |max_exclusive| is assumed public.
+  size_t words = len;
+  while (words > 0 && max_exclusive[words - 1] == 0) {
+    words--;
+  }
+  if (words == 0 ||
+      (words == 1 && max_exclusive[0] <= min_inclusive)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_RANGE);
+    return 0;
+  }
+  BN_ULONG mask = max_exclusive[words - 1];
+  // This sets all bits in |mask| below the most significant bit.
+  mask |= mask >> 1;
+  mask |= mask >> 2;
+  mask |= mask >> 4;
+  mask |= mask >> 8;
+  mask |= mask >> 16;
+#if defined(OPENSSL_64_BIT)
+  mask |= mask >> 32;
+#endif
+
+  *out_words = words;
+  *out_mask = mask;
+  return 1;
+}
+
+int bn_rand_range_words(BN_ULONG *out, BN_ULONG min_inclusive,
+                        const BN_ULONG *max_exclusive, size_t len,
+                        const uint8_t additional_data[32]) {
+  // This function implements the equivalent of steps 4 through 7 of FIPS 186-4
+  // appendices B.4.2 and B.5.2. When called in those contexts, |max_exclusive|
+  // is n and |min_inclusive| is one.
+
+  // Compute the bit length of |max_exclusive| (step 1), in terms of a number of
+  // |words| worth of entropy to fill and a mask of bits to clear in the top
+  // word.
+  size_t words;
+  BN_ULONG mask;
+  if (!bn_range_to_mask(&words, &mask, min_inclusive, max_exclusive, len)) {
+    return 0;
+  }
+
+  // Fill any unused words with zero.
+  OPENSSL_memset(out + words, 0, (len - words) * sizeof(BN_ULONG));
+
+  unsigned count = 100;
+  do {
+    if (!--count) {
+      OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_ITERATIONS);
+      return 0;
+    }
+
+    // Steps 4 and 5. Use |words| and |mask| together to obtain a string of N
+    // bits, where N is the bit length of |max_exclusive|.
+    RAND_bytes_with_additional_data((uint8_t *)out, words * sizeof(BN_ULONG),
+                                    additional_data);
+    out[words - 1] &= mask;
+
+    // If out >= max_exclusive or out < min_inclusive, retry. This implements
+    // the equivalent of steps 6 and 7 without leaking the value of |out|.
+  } while (!bn_in_range_words(out, min_inclusive, max_exclusive, words));
+  return 1;
+}
+
+int BN_rand_range_ex(BIGNUM *r, BN_ULONG min_inclusive,
+                     const BIGNUM *max_exclusive) {
+  static const uint8_t kDefaultAdditionalData[32] = {0};
+  if (!bn_wexpand(r, max_exclusive->width) ||
+      !bn_rand_range_words(r->d, min_inclusive, max_exclusive->d,
+                           max_exclusive->width, kDefaultAdditionalData)) {
+    return 0;
+  }
+
+  r->neg = 0;
+  r->width = max_exclusive->width;
+  return 1;
+}
+
+int bn_rand_secret_range(BIGNUM *r, int *out_is_uniform, BN_ULONG min_inclusive,
+                         const BIGNUM *max_exclusive) {
+  size_t words;
+  BN_ULONG mask;
+  if (!bn_range_to_mask(&words, &mask, min_inclusive, max_exclusive->d,
+                        max_exclusive->width) ||
+      !bn_wexpand(r, words)) {
+    return 0;
+  }
+
+  assert(words > 0);
+  assert(mask != 0);
+  // The range must be large enough for bit tricks to fix invalid values.
+  if (words == 1 && min_inclusive > mask >> 1) {
+    OPENSSL_PUT_ERROR(BN, BN_R_INVALID_RANGE);
+    return 0;
+  }
+
+  // Select a uniform random number with num_bits(max_exclusive) bits.
+  RAND_bytes((uint8_t *)r->d, words * sizeof(BN_ULONG));
+  r->d[words - 1] &= mask;
+
+  // Check, in constant-time, if the value is in range.
+  *out_is_uniform =
+      bn_in_range_words(r->d, min_inclusive, max_exclusive->d, words);
+  crypto_word_t in_range = *out_is_uniform;
+  in_range = 0 - in_range;
+
+  // If the value is not in range, force it to be in range.
+  r->d[0] |= constant_time_select_w(in_range, 0, min_inclusive);
+  r->d[words - 1] &= constant_time_select_w(in_range, BN_MASK2, mask >> 1);
+  assert(bn_in_range_words(r->d, min_inclusive, max_exclusive->d, words));
+
+  r->neg = 0;
+  r->width = words;
+  return 1;
+}
+
+int BN_rand_range(BIGNUM *r, const BIGNUM *range) {
+  return BN_rand_range_ex(r, 0, range);
+}
+
+int BN_pseudo_rand_range(BIGNUM *r, const BIGNUM *range) {
+  return BN_rand_range(r, range);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c
new file mode 100644
index 0000000..32a624d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c	
@@ -0,0 +1,226 @@
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2012, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ */
+
+#include "rsaz_exp.h"
+
+#if defined(RSAZ_ENABLED)
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// one is 1 in RSAZ's representation.
+alignas(64) static const BN_ULONG one[40] = {
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+// two80 is 2^80 in RSAZ's representation. Note RSAZ uses base 2^29, so this is
+// 2^(29*2 + 22) = 2^80, not 2^(64*2 + 22).
+alignas(64) static const BN_ULONG two80[40] = {
+    0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0,       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
+                            const BN_ULONG base_norm[16],
+                            const BN_ULONG exponent[16],
+                            const BN_ULONG m_norm[16], const BN_ULONG RR[16],
+                            BN_ULONG k0,
+                            BN_ULONG storage[MOD_EXP_CTIME_STORAGE_LEN]) {
+  OPENSSL_STATIC_ASSERT(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH % 64 == 0,
+                        "MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH is too small");
+  assert((uintptr_t)storage % 64 == 0);
+
+  BN_ULONG *a_inv, *m, *result, *table_s = storage + 40 * 3, *R2 = table_s;
+  // Note |R2| aliases |table_s|.
+  if (((((uintptr_t)storage & 4095) + 320) >> 12) != 0) {
+    result = storage;
+    a_inv = storage + 40;
+    m = storage + 40 * 2;  // should not cross page
+  } else {
+    m = storage;  // should not cross page
+    result = storage + 40;
+    a_inv = storage + 40 * 2;
+  }
+
+  rsaz_1024_norm2red_avx2(m, m_norm);
+  rsaz_1024_norm2red_avx2(a_inv, base_norm);
+  rsaz_1024_norm2red_avx2(R2, RR);
+
+  // Convert |R2| from the usual radix, giving R = 2^1024, to RSAZ's radix,
+  // giving R = 2^(36*29) = 2^1044.
+  rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
+  // R2 = 2^2048 * 2^2048 / 2^1044 = 2^3052
+  rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
+  // R2 = 2^3052 * 2^80 / 2^1044 = 2^2088 = (2^1044)^2
+
+  // table[0] = 1
+  rsaz_1024_mul_avx2(result, R2, one, m, k0);
+  // table[1] = a_inv^1
+  rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
+
+  rsaz_1024_scatter5_avx2(table_s, result, 0);
+  rsaz_1024_scatter5_avx2(table_s, a_inv, 1);
+
+  // table[2] = a_inv^2
+  rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 2);
+#if 0
+  // This is almost 2x smaller and less than 1% slower.
+  for (int index = 3; index < 32; index++) {
+    rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+    rsaz_1024_scatter5_avx2(table_s, result, index);
+  }
+#else
+  // table[4] = a_inv^4
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 4);
+  // table[8] = a_inv^8
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 8);
+  // table[16] = a_inv^16
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 16);
+  // table[17] = a_inv^17
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 17);
+
+  // table[3]
+  rsaz_1024_gather5_avx2(result, table_s, 2);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 3);
+  // table[6]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 6);
+  // table[12]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 12);
+  // table[24]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 24);
+  // table[25]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 25);
+
+  // table[5]
+  rsaz_1024_gather5_avx2(result, table_s, 4);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 5);
+  // table[10]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 10);
+  // table[20]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 20);
+  // table[21]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 21);
+
+  // table[7]
+  rsaz_1024_gather5_avx2(result, table_s, 6);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 7);
+  // table[14]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 14);
+  // table[28]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 28);
+  // table[29]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 29);
+
+  // table[9]
+  rsaz_1024_gather5_avx2(result, table_s, 8);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 9);
+  // table[18]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 18);
+  // table[19]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 19);
+
+  // table[11]
+  rsaz_1024_gather5_avx2(result, table_s, 10);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 11);
+  // table[22]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 22);
+  // table[23]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 23);
+
+  // table[13]
+  rsaz_1024_gather5_avx2(result, table_s, 12);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 13);
+  // table[26]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 26);
+  // table[27]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 27);
+
+  // table[15]
+  rsaz_1024_gather5_avx2(result, table_s, 14);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 15);
+  // table[30]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 30);
+  // table[31]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 31);
+#endif
+
+  const uint8_t *p_str = (const uint8_t *)exponent;
+
+  // load first window
+  int wvalue = p_str[127] >> 3;
+  rsaz_1024_gather5_avx2(result, table_s, wvalue);
+
+  int index = 1014;
+  while (index > -1) {  // Loop for the remaining 127 windows.
+
+    rsaz_1024_sqr_avx2(result, result, m, k0, 5);
+
+    uint16_t wvalue_16;
+    memcpy(&wvalue_16, &p_str[index / 8], sizeof(wvalue_16));
+    wvalue = wvalue_16;
+    wvalue = (wvalue >> (index % 8)) & 31;
+    index -= 5;
+
+    rsaz_1024_gather5_avx2(a_inv, table_s, wvalue);  // Borrow |a_inv|.
+    rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  }
+
+  // Square four times.
+  rsaz_1024_sqr_avx2(result, result, m, k0, 4);
+
+  wvalue = p_str[0] & 15;
+
+  rsaz_1024_gather5_avx2(a_inv, table_s, wvalue);  // Borrow |a_inv|.
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+
+  // Convert from Montgomery.
+  rsaz_1024_mul_avx2(result, result, one, m, k0);
+
+  rsaz_1024_red2norm_avx2(result_norm, result);
+
+  OPENSSL_cleanse(storage, MOD_EXP_CTIME_STORAGE_LEN * sizeof(BN_ULONG));
+}
+
+#endif  // RSAZ_ENABLED
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c.grpc_back
new file mode 100644
index 0000000..7e15aaf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.c.grpc_back	
@@ -0,0 +1,226 @@
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2012, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ */
+
+#include "rsaz_exp.h"
+
+#if defined(RSAZ_ENABLED)
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// one is 1 in RSAZ's representation.
+alignas(64) static const BN_ULONG one[40] = {
+    1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+// two80 is 2^80 in RSAZ's representation. Note RSAZ uses base 2^29, so this is
+// 2^(29*2 + 22) = 2^80, not 2^(64*2 + 22).
+alignas(64) static const BN_ULONG two80[40] = {
+    0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0,       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
+                            const BN_ULONG base_norm[16],
+                            const BN_ULONG exponent[16],
+                            const BN_ULONG m_norm[16], const BN_ULONG RR[16],
+                            BN_ULONG k0,
+                            BN_ULONG storage[MOD_EXP_CTIME_STORAGE_LEN]) {
+  OPENSSL_STATIC_ASSERT(MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH % 64 == 0,
+                        "MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH is too small");
+  assert((uintptr_t)storage % 64 == 0);
+
+  BN_ULONG *a_inv, *m, *result, *table_s = storage + 40 * 3, *R2 = table_s;
+  // Note |R2| aliases |table_s|.
+  if (((((uintptr_t)storage & 4095) + 320) >> 12) != 0) {
+    result = storage;
+    a_inv = storage + 40;
+    m = storage + 40 * 2;  // should not cross page
+  } else {
+    m = storage;  // should not cross page
+    result = storage + 40;
+    a_inv = storage + 40 * 2;
+  }
+
+  rsaz_1024_norm2red_avx2(m, m_norm);
+  rsaz_1024_norm2red_avx2(a_inv, base_norm);
+  rsaz_1024_norm2red_avx2(R2, RR);
+
+  // Convert |R2| from the usual radix, giving R = 2^1024, to RSAZ's radix,
+  // giving R = 2^(36*29) = 2^1044.
+  rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
+  // R2 = 2^2048 * 2^2048 / 2^1044 = 2^3052
+  rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
+  // R2 = 2^3052 * 2^80 / 2^1044 = 2^2088 = (2^1044)^2
+
+  // table[0] = 1
+  rsaz_1024_mul_avx2(result, R2, one, m, k0);
+  // table[1] = a_inv^1
+  rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
+
+  rsaz_1024_scatter5_avx2(table_s, result, 0);
+  rsaz_1024_scatter5_avx2(table_s, a_inv, 1);
+
+  // table[2] = a_inv^2
+  rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 2);
+#if 0
+  // This is almost 2x smaller and less than 1% slower.
+  for (int index = 3; index < 32; index++) {
+    rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+    rsaz_1024_scatter5_avx2(table_s, result, index);
+  }
+#else
+  // table[4] = a_inv^4
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 4);
+  // table[8] = a_inv^8
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 8);
+  // table[16] = a_inv^16
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 16);
+  // table[17] = a_inv^17
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 17);
+
+  // table[3]
+  rsaz_1024_gather5_avx2(result, table_s, 2);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 3);
+  // table[6]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 6);
+  // table[12]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 12);
+  // table[24]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 24);
+  // table[25]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 25);
+
+  // table[5]
+  rsaz_1024_gather5_avx2(result, table_s, 4);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 5);
+  // table[10]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 10);
+  // table[20]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 20);
+  // table[21]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 21);
+
+  // table[7]
+  rsaz_1024_gather5_avx2(result, table_s, 6);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 7);
+  // table[14]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 14);
+  // table[28]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 28);
+  // table[29]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 29);
+
+  // table[9]
+  rsaz_1024_gather5_avx2(result, table_s, 8);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 9);
+  // table[18]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 18);
+  // table[19]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 19);
+
+  // table[11]
+  rsaz_1024_gather5_avx2(result, table_s, 10);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 11);
+  // table[22]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 22);
+  // table[23]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 23);
+
+  // table[13]
+  rsaz_1024_gather5_avx2(result, table_s, 12);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 13);
+  // table[26]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 26);
+  // table[27]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 27);
+
+  // table[15]
+  rsaz_1024_gather5_avx2(result, table_s, 14);
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 15);
+  // table[30]
+  rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+  rsaz_1024_scatter5_avx2(table_s, result, 30);
+  // table[31]
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  rsaz_1024_scatter5_avx2(table_s, result, 31);
+#endif
+
+  const uint8_t *p_str = (const uint8_t *)exponent;
+
+  // load first window
+  int wvalue = p_str[127] >> 3;
+  rsaz_1024_gather5_avx2(result, table_s, wvalue);
+
+  int index = 1014;
+  while (index > -1) {  // Loop for the remaining 127 windows.
+
+    rsaz_1024_sqr_avx2(result, result, m, k0, 5);
+
+    uint16_t wvalue_16;
+    memcpy(&wvalue_16, &p_str[index / 8], sizeof(wvalue_16));
+    wvalue = wvalue_16;
+    wvalue = (wvalue >> (index % 8)) & 31;
+    index -= 5;
+
+    rsaz_1024_gather5_avx2(a_inv, table_s, wvalue);  // Borrow |a_inv|.
+    rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+  }
+
+  // Square four times.
+  rsaz_1024_sqr_avx2(result, result, m, k0, 4);
+
+  wvalue = p_str[0] & 15;
+
+  rsaz_1024_gather5_avx2(a_inv, table_s, wvalue);  // Borrow |a_inv|.
+  rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+
+  // Convert from Montgomery.
+  rsaz_1024_mul_avx2(result, result, one, m, k0);
+
+  rsaz_1024_red2norm_avx2(result_norm, result);
+
+  OPENSSL_cleanse(storage, MOD_EXP_CTIME_STORAGE_LEN * sizeof(BN_ULONG));
+}
+
+#endif  // RSAZ_ENABLED
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h
new file mode 100644
index 0000000..717c3d4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2012, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ */
+
+#ifndef OPENSSL_HEADER_BN_RSAZ_EXP_H
+#define OPENSSL_HEADER_BN_RSAZ_EXP_H
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/cpu.h>
+
+#include "internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64)
+#define RSAZ_ENABLED
+
+
+// RSAZ_1024_mod_exp_avx2 sets |result| to |base_norm| raised to |exponent|
+// modulo |m_norm|. |base_norm| must be fully-reduced and |exponent| must have
+// the high bit set (it is 1024 bits wide). |RR| and |k0| must be |RR| and |n0|,
+// respectively, extracted from |m_norm|'s |BN_MONT_CTX|. |storage_words| is a
+// temporary buffer that must be aligned to |MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH|
+// bytes.
+void RSAZ_1024_mod_exp_avx2(BN_ULONG result[16], const BN_ULONG base_norm[16],
+                            const BN_ULONG exponent[16],
+                            const BN_ULONG m_norm[16], const BN_ULONG RR[16],
+                            BN_ULONG k0,
+                            BN_ULONG storage_words[MOD_EXP_CTIME_STORAGE_LEN]);
+
+OPENSSL_INLINE int rsaz_avx2_capable(void) {
+  const uint32_t *cap = OPENSSL_ia32cap_get();
+  return (cap[2] & (1 << 5)) != 0;  // AVX2
+}
+
+OPENSSL_INLINE int rsaz_avx2_preferred(void) {
+  const uint32_t *cap = OPENSSL_ia32cap_get();
+  static const uint32_t kBMI2AndADX = (1 << 8) | (1 << 19);
+  if ((cap[2] & kBMI2AndADX) == kBMI2AndADX) {
+    // If BMI2 and ADX are available, x86_64-mont5.pl is faster.
+    return 0;
+  }
+  return (cap[2] & (1 << 5)) != 0;  // AVX2
+}
+
+
+// Assembly functions.
+
+// RSAZ represents 1024-bit integers using unsaturated 29-bit limbs stored in
+// 64-bit integers. This requires 36 limbs but padded up to 40.
+//
+// See crypto/bn/asm/rsaz-avx2.pl for further details.
+
+// rsaz_1024_norm2red_avx2 converts |norm| from |BIGNUM| to RSAZ representation
+// and writes the result to |red|.
+void rsaz_1024_norm2red_avx2(BN_ULONG red[40], const BN_ULONG norm[16]);
+
+// rsaz_1024_mul_avx2 computes |a| * |b| mod |n| and writes the result to |ret|.
+// Inputs and outputs are in Montgomery form, using RSAZ's representation. |k|
+// is -|n|^-1 mod 2^64 or |n0| from |BN_MONT_CTX|.
+void rsaz_1024_mul_avx2(BN_ULONG ret[40], const BN_ULONG a[40],
+                        const BN_ULONG b[40], const BN_ULONG n[40], BN_ULONG k);
+
+// rsaz_1024_mul_avx2 computes |a|^(2*|count|) mod |n| and writes the result to
+// |ret|. Inputs and outputs are in Montgomery form, using RSAZ's
+// representation. |k| is -|n|^-1 mod 2^64 or |n0| from |BN_MONT_CTX|.
+void rsaz_1024_sqr_avx2(BN_ULONG ret[40], const BN_ULONG a[40],
+                        const BN_ULONG n[40], BN_ULONG k, int count);
+
+// rsaz_1024_scatter5_avx2 stores |val| at index |i| of |tbl|. |i| must be
+// positive and at most 31. Note the table only uses 18 |BN_ULONG|s per entry
+// instead of 40. It packs two 29-bit limbs into each |BN_ULONG| and only stores
+// 36 limbs rather than the padded 40.
+void rsaz_1024_scatter5_avx2(BN_ULONG tbl[32 * 18], const BN_ULONG val[40],
+                             int i);
+
+// rsaz_1024_gather5_avx2 loads index |i| of |tbl| and writes it to |val|.
+void rsaz_1024_gather5_avx2(BN_ULONG val[40], const BN_ULONG tbl[32 * 18],
+                            int i);
+
+// rsaz_1024_red2norm_avx2 converts |red| from RSAZ to |BIGNUM| representation
+// and writes the result to |norm|.
+void rsaz_1024_red2norm_avx2(BN_ULONG norm[16], const BN_ULONG red[40]);
+
+
+#endif  // !OPENSSL_NO_ASM && OPENSSL_X86_64
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_BN_RSAZ_EXP_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h.grpc_back
new file mode 100644
index 0000000..3b06192
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/rsaz_exp.h.grpc_back	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2012, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ */
+
+#ifndef OPENSSL_HEADER_BN_RSAZ_EXP_H
+#define OPENSSL_HEADER_BN_RSAZ_EXP_H
+
+#include <openssl/bn.h>
+#include <openssl/cpu.h>
+
+#include "internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64)
+#define RSAZ_ENABLED
+
+
+// RSAZ_1024_mod_exp_avx2 sets |result| to |base_norm| raised to |exponent|
+// modulo |m_norm|. |base_norm| must be fully-reduced and |exponent| must have
+// the high bit set (it is 1024 bits wide). |RR| and |k0| must be |RR| and |n0|,
+// respectively, extracted from |m_norm|'s |BN_MONT_CTX|. |storage_words| is a
+// temporary buffer that must be aligned to |MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH|
+// bytes.
+void RSAZ_1024_mod_exp_avx2(BN_ULONG result[16], const BN_ULONG base_norm[16],
+                            const BN_ULONG exponent[16],
+                            const BN_ULONG m_norm[16], const BN_ULONG RR[16],
+                            BN_ULONG k0,
+                            BN_ULONG storage_words[MOD_EXP_CTIME_STORAGE_LEN]);
+
+OPENSSL_INLINE int rsaz_avx2_capable(void) {
+  const uint32_t *cap = OPENSSL_ia32cap_get();
+  return (cap[2] & (1 << 5)) != 0;  // AVX2
+}
+
+OPENSSL_INLINE int rsaz_avx2_preferred(void) {
+  const uint32_t *cap = OPENSSL_ia32cap_get();
+  static const uint32_t kBMI2AndADX = (1 << 8) | (1 << 19);
+  if ((cap[2] & kBMI2AndADX) == kBMI2AndADX) {
+    // If BMI2 and ADX are available, x86_64-mont5.pl is faster.
+    return 0;
+  }
+  return (cap[2] & (1 << 5)) != 0;  // AVX2
+}
+
+
+// Assembly functions.
+
+// RSAZ represents 1024-bit integers using unsaturated 29-bit limbs stored in
+// 64-bit integers. This requires 36 limbs but padded up to 40.
+//
+// See crypto/bn/asm/rsaz-avx2.pl for further details.
+
+// rsaz_1024_norm2red_avx2 converts |norm| from |BIGNUM| to RSAZ representation
+// and writes the result to |red|.
+void rsaz_1024_norm2red_avx2(BN_ULONG red[40], const BN_ULONG norm[16]);
+
+// rsaz_1024_mul_avx2 computes |a| * |b| mod |n| and writes the result to |ret|.
+// Inputs and outputs are in Montgomery form, using RSAZ's representation. |k|
+// is -|n|^-1 mod 2^64 or |n0| from |BN_MONT_CTX|.
+void rsaz_1024_mul_avx2(BN_ULONG ret[40], const BN_ULONG a[40],
+                        const BN_ULONG b[40], const BN_ULONG n[40], BN_ULONG k);
+
+// rsaz_1024_mul_avx2 computes |a|^(2*|count|) mod |n| and writes the result to
+// |ret|. Inputs and outputs are in Montgomery form, using RSAZ's
+// representation. |k| is -|n|^-1 mod 2^64 or |n0| from |BN_MONT_CTX|.
+void rsaz_1024_sqr_avx2(BN_ULONG ret[40], const BN_ULONG a[40],
+                        const BN_ULONG n[40], BN_ULONG k, int count);
+
+// rsaz_1024_scatter5_avx2 stores |val| at index |i| of |tbl|. |i| must be
+// positive and at most 31. Note the table only uses 18 |BN_ULONG|s per entry
+// instead of 40. It packs two 29-bit limbs into each |BN_ULONG| and only stores
+// 36 limbs rather than the padded 40.
+void rsaz_1024_scatter5_avx2(BN_ULONG tbl[32 * 18], const BN_ULONG val[40],
+                             int i);
+
+// rsaz_1024_gather5_avx2 loads index |i| of |tbl| and writes it to |val|.
+void rsaz_1024_gather5_avx2(BN_ULONG val[40], const BN_ULONG tbl[32 * 18],
+                            int i);
+
+// rsaz_1024_red2norm_avx2 converts |red| from RSAZ to |BIGNUM| representation
+// and writes the result to |norm|.
+void rsaz_1024_red2norm_avx2(BN_ULONG norm[16], const BN_ULONG red[40]);
+
+
+#endif  // !OPENSSL_NO_ASM && OPENSSL_X86_64
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_BN_RSAZ_EXP_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c
new file mode 100644
index 0000000..880866c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c	
@@ -0,0 +1,364 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/bn.h>
+
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+
+
+int BN_lshift(BIGNUM *r, const BIGNUM *a, int n) {
+  int i, nw, lb, rb;
+  BN_ULONG *t, *f;
+  BN_ULONG l;
+
+  if (n < 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  r->neg = a->neg;
+  nw = n / BN_BITS2;
+  if (!bn_wexpand(r, a->width + nw + 1)) {
+    return 0;
+  }
+  lb = n % BN_BITS2;
+  rb = BN_BITS2 - lb;
+  f = a->d;
+  t = r->d;
+  t[a->width + nw] = 0;
+  if (lb == 0) {
+    for (i = a->width - 1; i >= 0; i--) {
+      t[nw + i] = f[i];
+    }
+  } else {
+    for (i = a->width - 1; i >= 0; i--) {
+      l = f[i];
+      t[nw + i + 1] |= l >> rb;
+      t[nw + i] = l << lb;
+    }
+  }
+  OPENSSL_memset(t, 0, nw * sizeof(t[0]));
+  r->width = a->width + nw + 1;
+  bn_set_minimal_width(r);
+
+  return 1;
+}
+
+int BN_lshift1(BIGNUM *r, const BIGNUM *a) {
+  BN_ULONG *ap, *rp, t, c;
+  int i;
+
+  if (r != a) {
+    r->neg = a->neg;
+    if (!bn_wexpand(r, a->width + 1)) {
+      return 0;
+    }
+    r->width = a->width;
+  } else {
+    if (!bn_wexpand(r, a->width + 1)) {
+      return 0;
+    }
+  }
+  ap = a->d;
+  rp = r->d;
+  c = 0;
+  for (i = 0; i < a->width; i++) {
+    t = *(ap++);
+    *(rp++) = (t << 1) | c;
+    c = t >> (BN_BITS2 - 1);
+  }
+  if (c) {
+    *rp = 1;
+    r->width++;
+  }
+
+  return 1;
+}
+
+void bn_rshift_words(BN_ULONG *r, const BN_ULONG *a, unsigned shift,
+                     size_t num) {
+  unsigned shift_bits = shift % BN_BITS2;
+  size_t shift_words = shift / BN_BITS2;
+  if (shift_words >= num) {
+    OPENSSL_memset(r, 0, num * sizeof(BN_ULONG));
+    return;
+  }
+  if (shift_bits == 0) {
+    OPENSSL_memmove(r, a + shift_words, (num - shift_words) * sizeof(BN_ULONG));
+  } else {
+    for (size_t i = shift_words; i < num - 1; i++) {
+      r[i - shift_words] =
+          (a[i] >> shift_bits) | (a[i + 1] << (BN_BITS2 - shift_bits));
+    }
+    r[num - 1 - shift_words] = a[num - 1] >> shift_bits;
+  }
+  OPENSSL_memset(r + num - shift_words, 0, shift_words * sizeof(BN_ULONG));
+}
+
+int BN_rshift(BIGNUM *r, const BIGNUM *a, int n) {
+  if (n < 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+  bn_rshift_words(r->d, a->d, n, a->width);
+  r->neg = a->neg;
+  r->width = a->width;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int bn_rshift_secret_shift(BIGNUM *r, const BIGNUM *a, unsigned n,
+                           BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL ||
+      !BN_copy(r, a) ||
+      !bn_wexpand(tmp, r->width)) {
+    goto err;
+  }
+
+  // Shift conditionally by powers of two.
+  unsigned max_bits = BN_BITS2 * r->width;
+  for (unsigned i = 0; (max_bits >> i) != 0; i++) {
+    BN_ULONG mask = (n >> i) & 1;
+    mask = 0 - mask;
+    bn_rshift_words(tmp->d, r->d, 1u << i, r->width);
+    bn_select_words(r->d, mask, tmp->d /* apply shift */,
+                    r->d /* ignore shift */, r->width);
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+void bn_rshift1_words(BN_ULONG *r, const BN_ULONG *a, size_t num) {
+  if (num == 0) {
+    return;
+  }
+  for (size_t i = 0; i < num - 1; i++) {
+    r[i] = (a[i] >> 1) | (a[i + 1] << (BN_BITS2 - 1));
+  }
+  r[num - 1] = a[num - 1] >> 1;
+}
+
+int BN_rshift1(BIGNUM *r, const BIGNUM *a) {
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+  bn_rshift1_words(r->d, a->d, a->width);
+  r->width = a->width;
+  r->neg = a->neg;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_set_bit(BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+
+  int i = n / BN_BITS2;
+  int j = n % BN_BITS2;
+  if (a->width <= i) {
+    if (!bn_wexpand(a, i + 1)) {
+      return 0;
+    }
+    for (int k = a->width; k < i + 1; k++) {
+      a->d[k] = 0;
+    }
+    a->width = i + 1;
+  }
+
+  a->d[i] |= (((BN_ULONG)1) << j);
+
+  return 1;
+}
+
+int BN_clear_bit(BIGNUM *a, int n) {
+  int i, j;
+
+  if (n < 0) {
+    return 0;
+  }
+
+  i = n / BN_BITS2;
+  j = n % BN_BITS2;
+  if (a->width <= i) {
+    return 0;
+  }
+
+  a->d[i] &= (~(((BN_ULONG)1) << j));
+  bn_set_minimal_width(a);
+  return 1;
+}
+
+int bn_is_bit_set_words(const BN_ULONG *a, size_t num, unsigned bit) {
+  unsigned i = bit / BN_BITS2;
+  unsigned j = bit % BN_BITS2;
+  if (i >= num) {
+    return 0;
+  }
+  return (a[i] >> j) & 1;
+}
+
+int BN_is_bit_set(const BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+  return bn_is_bit_set_words(a->d, a->width, n);
+}
+
+int BN_mask_bits(BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+
+  int w = n / BN_BITS2;
+  int b = n % BN_BITS2;
+  if (w >= a->width) {
+    return 1;
+  }
+  if (b == 0) {
+    a->width = w;
+  } else {
+    a->width = w + 1;
+    a->d[w] &= ~(BN_MASK2 << b);
+  }
+
+  bn_set_minimal_width(a);
+  return 1;
+}
+
+static int bn_count_low_zero_bits_word(BN_ULONG l) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(sizeof(int) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(BN_BITS2 == sizeof(BN_ULONG) * 8,
+                        "BN_ULONG has padding bits");
+  // C has very bizarre rules for types smaller than an int.
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) >= sizeof(int),
+                        "BN_ULONG gets promoted to int");
+
+  crypto_word_t mask;
+  int bits = 0;
+
+#if BN_BITS2 > 32
+  // Check if the lower half of |x| are all zero.
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 32));
+  // If the lower half is all zeros, it is included in the bit count and we
+  // count the upper half. Otherwise, we count the lower half.
+  bits += 32 & mask;
+  l = constant_time_select_w(mask, l >> 32, l);
+#endif
+
+  // The remaining blocks are analogous iterations at lower powers of two.
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 16));
+  bits += 16 & mask;
+  l = constant_time_select_w(mask, l >> 16, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 8));
+  bits += 8 & mask;
+  l = constant_time_select_w(mask, l >> 8, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 4));
+  bits += 4 & mask;
+  l = constant_time_select_w(mask, l >> 4, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 2));
+  bits += 2 & mask;
+  l = constant_time_select_w(mask, l >> 2, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 1));
+  bits += 1 & mask;
+
+  return bits;
+}
+
+int BN_count_low_zero_bits(const BIGNUM *bn) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(sizeof(int) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+
+  int ret = 0;
+  crypto_word_t saw_nonzero = 0;
+  for (int i = 0; i < bn->width; i++) {
+    crypto_word_t nonzero = ~constant_time_is_zero_w(bn->d[i]);
+    crypto_word_t first_nonzero = ~saw_nonzero & nonzero;
+    saw_nonzero |= nonzero;
+
+    int bits = bn_count_low_zero_bits_word(bn->d[i]);
+    ret |= first_nonzero & (i * BN_BITS2 + bits);
+  }
+
+  // If got to the end of |bn| and saw no non-zero words, |bn| is zero. |ret|
+  // will then remain zero.
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c.grpc_back
new file mode 100644
index 0000000..523da67
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/shift.c.grpc_back	
@@ -0,0 +1,364 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/bn.h>
+
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+
+
+int BN_lshift(BIGNUM *r, const BIGNUM *a, int n) {
+  int i, nw, lb, rb;
+  BN_ULONG *t, *f;
+  BN_ULONG l;
+
+  if (n < 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  r->neg = a->neg;
+  nw = n / BN_BITS2;
+  if (!bn_wexpand(r, a->width + nw + 1)) {
+    return 0;
+  }
+  lb = n % BN_BITS2;
+  rb = BN_BITS2 - lb;
+  f = a->d;
+  t = r->d;
+  t[a->width + nw] = 0;
+  if (lb == 0) {
+    for (i = a->width - 1; i >= 0; i--) {
+      t[nw + i] = f[i];
+    }
+  } else {
+    for (i = a->width - 1; i >= 0; i--) {
+      l = f[i];
+      t[nw + i + 1] |= l >> rb;
+      t[nw + i] = l << lb;
+    }
+  }
+  OPENSSL_memset(t, 0, nw * sizeof(t[0]));
+  r->width = a->width + nw + 1;
+  bn_set_minimal_width(r);
+
+  return 1;
+}
+
+int BN_lshift1(BIGNUM *r, const BIGNUM *a) {
+  BN_ULONG *ap, *rp, t, c;
+  int i;
+
+  if (r != a) {
+    r->neg = a->neg;
+    if (!bn_wexpand(r, a->width + 1)) {
+      return 0;
+    }
+    r->width = a->width;
+  } else {
+    if (!bn_wexpand(r, a->width + 1)) {
+      return 0;
+    }
+  }
+  ap = a->d;
+  rp = r->d;
+  c = 0;
+  for (i = 0; i < a->width; i++) {
+    t = *(ap++);
+    *(rp++) = (t << 1) | c;
+    c = t >> (BN_BITS2 - 1);
+  }
+  if (c) {
+    *rp = 1;
+    r->width++;
+  }
+
+  return 1;
+}
+
+void bn_rshift_words(BN_ULONG *r, const BN_ULONG *a, unsigned shift,
+                     size_t num) {
+  unsigned shift_bits = shift % BN_BITS2;
+  size_t shift_words = shift / BN_BITS2;
+  if (shift_words >= num) {
+    OPENSSL_memset(r, 0, num * sizeof(BN_ULONG));
+    return;
+  }
+  if (shift_bits == 0) {
+    OPENSSL_memmove(r, a + shift_words, (num - shift_words) * sizeof(BN_ULONG));
+  } else {
+    for (size_t i = shift_words; i < num - 1; i++) {
+      r[i - shift_words] =
+          (a[i] >> shift_bits) | (a[i + 1] << (BN_BITS2 - shift_bits));
+    }
+    r[num - 1 - shift_words] = a[num - 1] >> shift_bits;
+  }
+  OPENSSL_memset(r + num - shift_words, 0, shift_words * sizeof(BN_ULONG));
+}
+
+int BN_rshift(BIGNUM *r, const BIGNUM *a, int n) {
+  if (n < 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+  bn_rshift_words(r->d, a->d, n, a->width);
+  r->neg = a->neg;
+  r->width = a->width;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int bn_rshift_secret_shift(BIGNUM *r, const BIGNUM *a, unsigned n,
+                           BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL ||
+      !BN_copy(r, a) ||
+      !bn_wexpand(tmp, r->width)) {
+    goto err;
+  }
+
+  // Shift conditionally by powers of two.
+  unsigned max_bits = BN_BITS2 * r->width;
+  for (unsigned i = 0; (max_bits >> i) != 0; i++) {
+    BN_ULONG mask = (n >> i) & 1;
+    mask = 0 - mask;
+    bn_rshift_words(tmp->d, r->d, 1u << i, r->width);
+    bn_select_words(r->d, mask, tmp->d /* apply shift */,
+                    r->d /* ignore shift */, r->width);
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+void bn_rshift1_words(BN_ULONG *r, const BN_ULONG *a, size_t num) {
+  if (num == 0) {
+    return;
+  }
+  for (size_t i = 0; i < num - 1; i++) {
+    r[i] = (a[i] >> 1) | (a[i + 1] << (BN_BITS2 - 1));
+  }
+  r[num - 1] = a[num - 1] >> 1;
+}
+
+int BN_rshift1(BIGNUM *r, const BIGNUM *a) {
+  if (!bn_wexpand(r, a->width)) {
+    return 0;
+  }
+  bn_rshift1_words(r->d, a->d, a->width);
+  r->width = a->width;
+  r->neg = a->neg;
+  bn_set_minimal_width(r);
+  return 1;
+}
+
+int BN_set_bit(BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+
+  int i = n / BN_BITS2;
+  int j = n % BN_BITS2;
+  if (a->width <= i) {
+    if (!bn_wexpand(a, i + 1)) {
+      return 0;
+    }
+    for (int k = a->width; k < i + 1; k++) {
+      a->d[k] = 0;
+    }
+    a->width = i + 1;
+  }
+
+  a->d[i] |= (((BN_ULONG)1) << j);
+
+  return 1;
+}
+
+int BN_clear_bit(BIGNUM *a, int n) {
+  int i, j;
+
+  if (n < 0) {
+    return 0;
+  }
+
+  i = n / BN_BITS2;
+  j = n % BN_BITS2;
+  if (a->width <= i) {
+    return 0;
+  }
+
+  a->d[i] &= (~(((BN_ULONG)1) << j));
+  bn_set_minimal_width(a);
+  return 1;
+}
+
+int bn_is_bit_set_words(const BN_ULONG *a, size_t num, unsigned bit) {
+  unsigned i = bit / BN_BITS2;
+  unsigned j = bit % BN_BITS2;
+  if (i >= num) {
+    return 0;
+  }
+  return (a[i] >> j) & 1;
+}
+
+int BN_is_bit_set(const BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+  return bn_is_bit_set_words(a->d, a->width, n);
+}
+
+int BN_mask_bits(BIGNUM *a, int n) {
+  if (n < 0) {
+    return 0;
+  }
+
+  int w = n / BN_BITS2;
+  int b = n % BN_BITS2;
+  if (w >= a->width) {
+    return 1;
+  }
+  if (b == 0) {
+    a->width = w;
+  } else {
+    a->width = w + 1;
+    a->d[w] &= ~(BN_MASK2 << b);
+  }
+
+  bn_set_minimal_width(a);
+  return 1;
+}
+
+static int bn_count_low_zero_bits_word(BN_ULONG l) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(sizeof(int) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(BN_BITS2 == sizeof(BN_ULONG) * 8,
+                        "BN_ULONG has padding bits");
+  // C has very bizarre rules for types smaller than an int.
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) >= sizeof(int),
+                        "BN_ULONG gets promoted to int");
+
+  crypto_word_t mask;
+  int bits = 0;
+
+#if BN_BITS2 > 32
+  // Check if the lower half of |x| are all zero.
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 32));
+  // If the lower half is all zeros, it is included in the bit count and we
+  // count the upper half. Otherwise, we count the lower half.
+  bits += 32 & mask;
+  l = constant_time_select_w(mask, l >> 32, l);
+#endif
+
+  // The remaining blocks are analogous iterations at lower powers of two.
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 16));
+  bits += 16 & mask;
+  l = constant_time_select_w(mask, l >> 16, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 8));
+  bits += 8 & mask;
+  l = constant_time_select_w(mask, l >> 8, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 4));
+  bits += 4 & mask;
+  l = constant_time_select_w(mask, l >> 4, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 2));
+  bits += 2 & mask;
+  l = constant_time_select_w(mask, l >> 2, l);
+
+  mask = constant_time_is_zero_w(l << (BN_BITS2 - 1));
+  bits += 1 & mask;
+
+  return bits;
+}
+
+int BN_count_low_zero_bits(const BIGNUM *bn) {
+  OPENSSL_STATIC_ASSERT(sizeof(BN_ULONG) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+  OPENSSL_STATIC_ASSERT(sizeof(int) <= sizeof(crypto_word_t),
+                        "crypto_word_t is too small");
+
+  int ret = 0;
+  crypto_word_t saw_nonzero = 0;
+  for (int i = 0; i < bn->width; i++) {
+    crypto_word_t nonzero = ~constant_time_is_zero_w(bn->d[i]);
+    crypto_word_t first_nonzero = ~saw_nonzero & nonzero;
+    saw_nonzero |= nonzero;
+
+    int bits = bn_count_low_zero_bits_word(bn->d[i]);
+    ret |= first_nonzero & (i * BN_BITS2 + bits);
+  }
+
+  // If got to the end of |bn| and saw no non-zero words, |bn| is zero. |ret|
+  // will then remain zero.
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c
new file mode 100644
index 0000000..6dd88fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c	
@@ -0,0 +1,502 @@
+/* Written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
+ * and Bodo Moeller for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/bn.h>
+
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) {
+  // Compute a square root of |a| mod |p| using the Tonelli/Shanks algorithm
+  // (cf. Henri Cohen, "A Course in Algebraic Computational Number Theory",
+  // algorithm 1.5.1). |p| is assumed to be a prime.
+
+  BIGNUM *ret = in;
+  int err = 1;
+  int r;
+  BIGNUM *A, *b, *q, *t, *x, *y;
+  int e, i, j;
+
+  if (!BN_is_odd(p) || BN_abs_is_word(p, 1)) {
+    if (BN_abs_is_word(p, 2)) {
+      if (ret == NULL) {
+        ret = BN_new();
+      }
+      if (ret == NULL) {
+        goto end;
+      }
+      if (!BN_set_word(ret, BN_is_bit_set(a, 0))) {
+        if (ret != in) {
+          BN_free(ret);
+        }
+        return NULL;
+      }
+      return ret;
+    }
+
+    OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+    return (NULL);
+  }
+
+  if (BN_is_zero(a) || BN_is_one(a)) {
+    if (ret == NULL) {
+      ret = BN_new();
+    }
+    if (ret == NULL) {
+      goto end;
+    }
+    if (!BN_set_word(ret, BN_is_one(a))) {
+      if (ret != in) {
+        BN_free(ret);
+      }
+      return NULL;
+    }
+    return ret;
+  }
+
+  BN_CTX_start(ctx);
+  A = BN_CTX_get(ctx);
+  b = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  t = BN_CTX_get(ctx);
+  x = BN_CTX_get(ctx);
+  y = BN_CTX_get(ctx);
+  if (y == NULL) {
+    goto end;
+  }
+
+  if (ret == NULL) {
+    ret = BN_new();
+  }
+  if (ret == NULL) {
+    goto end;
+  }
+
+  // A = a mod p
+  if (!BN_nnmod(A, a, p, ctx)) {
+    goto end;
+  }
+
+  // now write  |p| - 1  as  2^e*q  where  q  is odd
+  e = 1;
+  while (!BN_is_bit_set(p, e)) {
+    e++;
+  }
+  // we'll set  q  later (if needed)
+
+  if (e == 1) {
+    // The easy case:  (|p|-1)/2  is odd, so 2 has an inverse
+    // modulo  (|p|-1)/2,  and square roots can be computed
+    // directly by modular exponentiation.
+    // We have
+    //     2 * (|p|+1)/4 == 1   (mod (|p|-1)/2),
+    // so we can use exponent  (|p|+1)/4,  i.e.  (|p|-3)/4 + 1.
+    if (!BN_rshift(q, p, 2)) {
+      goto end;
+    }
+    q->neg = 0;
+    if (!BN_add_word(q, 1) ||
+        !BN_mod_exp_mont(ret, A, q, p, ctx, NULL)) {
+      goto end;
+    }
+    err = 0;
+    goto vrfy;
+  }
+
+  if (e == 2) {
+    // |p| == 5  (mod 8)
+    //
+    // In this case  2  is always a non-square since
+    // Legendre(2,p) = (-1)^((p^2-1)/8)  for any odd prime.
+    // So if  a  really is a square, then  2*a  is a non-square.
+    // Thus for
+    //      b := (2*a)^((|p|-5)/8),
+    //      i := (2*a)*b^2
+    // we have
+    //     i^2 = (2*a)^((1 + (|p|-5)/4)*2)
+    //         = (2*a)^((p-1)/2)
+    //         = -1;
+    // so if we set
+    //      x := a*b*(i-1),
+    // then
+    //     x^2 = a^2 * b^2 * (i^2 - 2*i + 1)
+    //         = a^2 * b^2 * (-2*i)
+    //         = a*(-i)*(2*a*b^2)
+    //         = a*(-i)*i
+    //         = a.
+    //
+    // (This is due to A.O.L. Atkin,
+    // <URL:
+    //http://listserv.nodak.edu/scripts/wa.exe?A2=ind9211&L=nmbrthry&O=T&P=562>,
+    // November 1992.)
+
+    // t := 2*a
+    if (!bn_mod_lshift1_consttime(t, A, p, ctx)) {
+      goto end;
+    }
+
+    // b := (2*a)^((|p|-5)/8)
+    if (!BN_rshift(q, p, 3)) {
+      goto end;
+    }
+    q->neg = 0;
+    if (!BN_mod_exp_mont(b, t, q, p, ctx, NULL)) {
+      goto end;
+    }
+
+    // y := b^2
+    if (!BN_mod_sqr(y, b, p, ctx)) {
+      goto end;
+    }
+
+    // t := (2*a)*b^2 - 1
+    if (!BN_mod_mul(t, t, y, p, ctx) ||
+        !BN_sub_word(t, 1)) {
+      goto end;
+    }
+
+    // x = a*b*t
+    if (!BN_mod_mul(x, A, b, p, ctx) ||
+        !BN_mod_mul(x, x, t, p, ctx)) {
+      goto end;
+    }
+
+    if (!BN_copy(ret, x)) {
+      goto end;
+    }
+    err = 0;
+    goto vrfy;
+  }
+
+  // e > 2, so we really have to use the Tonelli/Shanks algorithm.
+  // First, find some  y  that is not a square.
+  if (!BN_copy(q, p)) {
+    goto end;  // use 'q' as temp
+  }
+  q->neg = 0;
+  i = 2;
+  do {
+    // For efficiency, try small numbers first;
+    // if this fails, try random numbers.
+    if (i < 22) {
+      if (!BN_set_word(y, i)) {
+        goto end;
+      }
+    } else {
+      if (!BN_pseudo_rand(y, BN_num_bits(p), 0, 0)) {
+        goto end;
+      }
+      if (BN_ucmp(y, p) >= 0) {
+        if (!(p->neg ? BN_add : BN_sub)(y, y, p)) {
+          goto end;
+        }
+      }
+      // now 0 <= y < |p|
+      if (BN_is_zero(y)) {
+        if (!BN_set_word(y, i)) {
+          goto end;
+        }
+      }
+    }
+
+    r = bn_jacobi(y, q, ctx);  // here 'q' is |p|
+    if (r < -1) {
+      goto end;
+    }
+    if (r == 0) {
+      // m divides p
+      OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+      goto end;
+    }
+  } while (r == 1 && ++i < 82);
+
+  if (r != -1) {
+    // Many rounds and still no non-square -- this is more likely
+    // a bug than just bad luck.
+    // Even if  p  is not prime, we should have found some  y
+    // such that r == -1.
+    OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_ITERATIONS);
+    goto end;
+  }
+
+  // Here's our actual 'q':
+  if (!BN_rshift(q, q, e)) {
+    goto end;
+  }
+
+  // Now that we have some non-square, we can find an element
+  // of order  2^e  by computing its q'th power.
+  if (!BN_mod_exp_mont(y, y, q, p, ctx, NULL)) {
+    goto end;
+  }
+  if (BN_is_one(y)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+    goto end;
+  }
+
+  // Now we know that (if  p  is indeed prime) there is an integer
+  // k,  0 <= k < 2^e,  such that
+  //
+  //      a^q * y^k == 1   (mod p).
+  //
+  // As  a^q  is a square and  y  is not,  k  must be even.
+  // q+1  is even, too, so there is an element
+  //
+  //     X := a^((q+1)/2) * y^(k/2),
+  //
+  // and it satisfies
+  //
+  //     X^2 = a^q * a     * y^k
+  //         = a,
+  //
+  // so it is the square root that we are looking for.
+
+  // t := (q-1)/2  (note that  q  is odd)
+  if (!BN_rshift1(t, q)) {
+    goto end;
+  }
+
+  // x := a^((q-1)/2)
+  if (BN_is_zero(t))  // special case: p = 2^e + 1
+  {
+    if (!BN_nnmod(t, A, p, ctx)) {
+      goto end;
+    }
+    if (BN_is_zero(t)) {
+      // special case: a == 0  (mod p)
+      BN_zero(ret);
+      err = 0;
+      goto end;
+    } else if (!BN_one(x)) {
+      goto end;
+    }
+  } else {
+    if (!BN_mod_exp_mont(x, A, t, p, ctx, NULL)) {
+      goto end;
+    }
+    if (BN_is_zero(x)) {
+      // special case: a == 0  (mod p)
+      BN_zero(ret);
+      err = 0;
+      goto end;
+    }
+  }
+
+  // b := a*x^2  (= a^q)
+  if (!BN_mod_sqr(b, x, p, ctx) ||
+      !BN_mod_mul(b, b, A, p, ctx)) {
+    goto end;
+  }
+
+  // x := a*x    (= a^((q+1)/2))
+  if (!BN_mod_mul(x, x, A, p, ctx)) {
+    goto end;
+  }
+
+  while (1) {
+    // Now  b  is  a^q * y^k  for some even  k  (0 <= k < 2^E
+    // where  E  refers to the original value of  e,  which we
+    // don't keep in a variable),  and  x  is  a^((q+1)/2) * y^(k/2).
+    //
+    // We have  a*b = x^2,
+    //    y^2^(e-1) = -1,
+    //    b^2^(e-1) = 1.
+
+    if (BN_is_one(b)) {
+      if (!BN_copy(ret, x)) {
+        goto end;
+      }
+      err = 0;
+      goto vrfy;
+    }
+
+
+    // find smallest  i  such that  b^(2^i) = 1
+    i = 1;
+    if (!BN_mod_sqr(t, b, p, ctx)) {
+      goto end;
+    }
+    while (!BN_is_one(t)) {
+      i++;
+      if (i == e) {
+        OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+        goto end;
+      }
+      if (!BN_mod_mul(t, t, t, p, ctx)) {
+        goto end;
+      }
+    }
+
+
+    // t := y^2^(e - i - 1)
+    if (!BN_copy(t, y)) {
+      goto end;
+    }
+    for (j = e - i - 1; j > 0; j--) {
+      if (!BN_mod_sqr(t, t, p, ctx)) {
+        goto end;
+      }
+    }
+    if (!BN_mod_mul(y, t, t, p, ctx) ||
+        !BN_mod_mul(x, x, t, p, ctx) ||
+        !BN_mod_mul(b, b, y, p, ctx)) {
+      goto end;
+    }
+    e = i;
+  }
+
+vrfy:
+  if (!err) {
+    // verify the result -- the input might have been not a square
+    // (test added in 0.9.8)
+
+    if (!BN_mod_sqr(x, ret, p, ctx)) {
+      err = 1;
+    }
+
+    if (!err && 0 != BN_cmp(x, A)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+      err = 1;
+    }
+  }
+
+end:
+  if (err) {
+    if (ret != in) {
+      BN_clear_free(ret);
+    }
+    ret = NULL;
+  }
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_sqrt(BIGNUM *out_sqrt, const BIGNUM *in, BN_CTX *ctx) {
+  BIGNUM *estimate, *tmp, *delta, *last_delta, *tmp2;
+  int ok = 0, last_delta_valid = 0;
+
+  if (in->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (BN_is_zero(in)) {
+    BN_zero(out_sqrt);
+    return 1;
+  }
+
+  BN_CTX_start(ctx);
+  if (out_sqrt == in) {
+    estimate = BN_CTX_get(ctx);
+  } else {
+    estimate = out_sqrt;
+  }
+  tmp = BN_CTX_get(ctx);
+  last_delta = BN_CTX_get(ctx);
+  delta = BN_CTX_get(ctx);
+  if (estimate == NULL || tmp == NULL || last_delta == NULL || delta == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  // We estimate that the square root of an n-bit number is 2^{n/2}.
+  if (!BN_lshift(estimate, BN_value_one(), BN_num_bits(in)/2)) {
+    goto err;
+  }
+
+  // This is Newton's method for finding a root of the equation |estimate|^2 -
+  // |in| = 0.
+  for (;;) {
+    // |estimate| = 1/2 * (|estimate| + |in|/|estimate|)
+    if (!BN_div(tmp, NULL, in, estimate, ctx) ||
+        !BN_add(tmp, tmp, estimate) ||
+        !BN_rshift1(estimate, tmp) ||
+        // |tmp| = |estimate|^2
+        !BN_sqr(tmp, estimate, ctx) ||
+        // |delta| = |in| - |tmp|
+        !BN_sub(delta, in, tmp)) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_BN_LIB);
+      goto err;
+    }
+
+    delta->neg = 0;
+    // The difference between |in| and |estimate| squared is required to always
+    // decrease. This ensures that the loop always terminates, but I don't have
+    // a proof that it always finds the square root for a given square.
+    if (last_delta_valid && BN_cmp(delta, last_delta) >= 0) {
+      break;
+    }
+
+    last_delta_valid = 1;
+
+    tmp2 = last_delta;
+    last_delta = delta;
+    delta = tmp2;
+  }
+
+  if (BN_cmp(tmp, in) != 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (ok && out_sqrt == in && !BN_copy(out_sqrt, estimate)) {
+    ok = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c.grpc_back
new file mode 100644
index 0000000..23417d1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/bn/sqrt.c.grpc_back	
@@ -0,0 +1,502 @@
+/* Written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
+ * and Bodo Moeller for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/bn.h>
+
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) {
+  // Compute a square root of |a| mod |p| using the Tonelli/Shanks algorithm
+  // (cf. Henri Cohen, "A Course in Algebraic Computational Number Theory",
+  // algorithm 1.5.1). |p| is assumed to be a prime.
+
+  BIGNUM *ret = in;
+  int err = 1;
+  int r;
+  BIGNUM *A, *b, *q, *t, *x, *y;
+  int e, i, j;
+
+  if (!BN_is_odd(p) || BN_abs_is_word(p, 1)) {
+    if (BN_abs_is_word(p, 2)) {
+      if (ret == NULL) {
+        ret = BN_new();
+      }
+      if (ret == NULL) {
+        goto end;
+      }
+      if (!BN_set_word(ret, BN_is_bit_set(a, 0))) {
+        if (ret != in) {
+          BN_free(ret);
+        }
+        return NULL;
+      }
+      return ret;
+    }
+
+    OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+    return (NULL);
+  }
+
+  if (BN_is_zero(a) || BN_is_one(a)) {
+    if (ret == NULL) {
+      ret = BN_new();
+    }
+    if (ret == NULL) {
+      goto end;
+    }
+    if (!BN_set_word(ret, BN_is_one(a))) {
+      if (ret != in) {
+        BN_free(ret);
+      }
+      return NULL;
+    }
+    return ret;
+  }
+
+  BN_CTX_start(ctx);
+  A = BN_CTX_get(ctx);
+  b = BN_CTX_get(ctx);
+  q = BN_CTX_get(ctx);
+  t = BN_CTX_get(ctx);
+  x = BN_CTX_get(ctx);
+  y = BN_CTX_get(ctx);
+  if (y == NULL) {
+    goto end;
+  }
+
+  if (ret == NULL) {
+    ret = BN_new();
+  }
+  if (ret == NULL) {
+    goto end;
+  }
+
+  // A = a mod p
+  if (!BN_nnmod(A, a, p, ctx)) {
+    goto end;
+  }
+
+  // now write  |p| - 1  as  2^e*q  where  q  is odd
+  e = 1;
+  while (!BN_is_bit_set(p, e)) {
+    e++;
+  }
+  // we'll set  q  later (if needed)
+
+  if (e == 1) {
+    // The easy case:  (|p|-1)/2  is odd, so 2 has an inverse
+    // modulo  (|p|-1)/2,  and square roots can be computed
+    // directly by modular exponentiation.
+    // We have
+    //     2 * (|p|+1)/4 == 1   (mod (|p|-1)/2),
+    // so we can use exponent  (|p|+1)/4,  i.e.  (|p|-3)/4 + 1.
+    if (!BN_rshift(q, p, 2)) {
+      goto end;
+    }
+    q->neg = 0;
+    if (!BN_add_word(q, 1) ||
+        !BN_mod_exp_mont(ret, A, q, p, ctx, NULL)) {
+      goto end;
+    }
+    err = 0;
+    goto vrfy;
+  }
+
+  if (e == 2) {
+    // |p| == 5  (mod 8)
+    //
+    // In this case  2  is always a non-square since
+    // Legendre(2,p) = (-1)^((p^2-1)/8)  for any odd prime.
+    // So if  a  really is a square, then  2*a  is a non-square.
+    // Thus for
+    //      b := (2*a)^((|p|-5)/8),
+    //      i := (2*a)*b^2
+    // we have
+    //     i^2 = (2*a)^((1 + (|p|-5)/4)*2)
+    //         = (2*a)^((p-1)/2)
+    //         = -1;
+    // so if we set
+    //      x := a*b*(i-1),
+    // then
+    //     x^2 = a^2 * b^2 * (i^2 - 2*i + 1)
+    //         = a^2 * b^2 * (-2*i)
+    //         = a*(-i)*(2*a*b^2)
+    //         = a*(-i)*i
+    //         = a.
+    //
+    // (This is due to A.O.L. Atkin,
+    // <URL:
+    //http://listserv.nodak.edu/scripts/wa.exe?A2=ind9211&L=nmbrthry&O=T&P=562>,
+    // November 1992.)
+
+    // t := 2*a
+    if (!bn_mod_lshift1_consttime(t, A, p, ctx)) {
+      goto end;
+    }
+
+    // b := (2*a)^((|p|-5)/8)
+    if (!BN_rshift(q, p, 3)) {
+      goto end;
+    }
+    q->neg = 0;
+    if (!BN_mod_exp_mont(b, t, q, p, ctx, NULL)) {
+      goto end;
+    }
+
+    // y := b^2
+    if (!BN_mod_sqr(y, b, p, ctx)) {
+      goto end;
+    }
+
+    // t := (2*a)*b^2 - 1
+    if (!BN_mod_mul(t, t, y, p, ctx) ||
+        !BN_sub_word(t, 1)) {
+      goto end;
+    }
+
+    // x = a*b*t
+    if (!BN_mod_mul(x, A, b, p, ctx) ||
+        !BN_mod_mul(x, x, t, p, ctx)) {
+      goto end;
+    }
+
+    if (!BN_copy(ret, x)) {
+      goto end;
+    }
+    err = 0;
+    goto vrfy;
+  }
+
+  // e > 2, so we really have to use the Tonelli/Shanks algorithm.
+  // First, find some  y  that is not a square.
+  if (!BN_copy(q, p)) {
+    goto end;  // use 'q' as temp
+  }
+  q->neg = 0;
+  i = 2;
+  do {
+    // For efficiency, try small numbers first;
+    // if this fails, try random numbers.
+    if (i < 22) {
+      if (!BN_set_word(y, i)) {
+        goto end;
+      }
+    } else {
+      if (!BN_pseudo_rand(y, BN_num_bits(p), 0, 0)) {
+        goto end;
+      }
+      if (BN_ucmp(y, p) >= 0) {
+        if (!(p->neg ? BN_add : BN_sub)(y, y, p)) {
+          goto end;
+        }
+      }
+      // now 0 <= y < |p|
+      if (BN_is_zero(y)) {
+        if (!BN_set_word(y, i)) {
+          goto end;
+        }
+      }
+    }
+
+    r = bn_jacobi(y, q, ctx);  // here 'q' is |p|
+    if (r < -1) {
+      goto end;
+    }
+    if (r == 0) {
+      // m divides p
+      OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+      goto end;
+    }
+  } while (r == 1 && ++i < 82);
+
+  if (r != -1) {
+    // Many rounds and still no non-square -- this is more likely
+    // a bug than just bad luck.
+    // Even if  p  is not prime, we should have found some  y
+    // such that r == -1.
+    OPENSSL_PUT_ERROR(BN, BN_R_TOO_MANY_ITERATIONS);
+    goto end;
+  }
+
+  // Here's our actual 'q':
+  if (!BN_rshift(q, q, e)) {
+    goto end;
+  }
+
+  // Now that we have some non-square, we can find an element
+  // of order  2^e  by computing its q'th power.
+  if (!BN_mod_exp_mont(y, y, q, p, ctx, NULL)) {
+    goto end;
+  }
+  if (BN_is_one(y)) {
+    OPENSSL_PUT_ERROR(BN, BN_R_P_IS_NOT_PRIME);
+    goto end;
+  }
+
+  // Now we know that (if  p  is indeed prime) there is an integer
+  // k,  0 <= k < 2^e,  such that
+  //
+  //      a^q * y^k == 1   (mod p).
+  //
+  // As  a^q  is a square and  y  is not,  k  must be even.
+  // q+1  is even, too, so there is an element
+  //
+  //     X := a^((q+1)/2) * y^(k/2),
+  //
+  // and it satisfies
+  //
+  //     X^2 = a^q * a     * y^k
+  //         = a,
+  //
+  // so it is the square root that we are looking for.
+
+  // t := (q-1)/2  (note that  q  is odd)
+  if (!BN_rshift1(t, q)) {
+    goto end;
+  }
+
+  // x := a^((q-1)/2)
+  if (BN_is_zero(t))  // special case: p = 2^e + 1
+  {
+    if (!BN_nnmod(t, A, p, ctx)) {
+      goto end;
+    }
+    if (BN_is_zero(t)) {
+      // special case: a == 0  (mod p)
+      BN_zero(ret);
+      err = 0;
+      goto end;
+    } else if (!BN_one(x)) {
+      goto end;
+    }
+  } else {
+    if (!BN_mod_exp_mont(x, A, t, p, ctx, NULL)) {
+      goto end;
+    }
+    if (BN_is_zero(x)) {
+      // special case: a == 0  (mod p)
+      BN_zero(ret);
+      err = 0;
+      goto end;
+    }
+  }
+
+  // b := a*x^2  (= a^q)
+  if (!BN_mod_sqr(b, x, p, ctx) ||
+      !BN_mod_mul(b, b, A, p, ctx)) {
+    goto end;
+  }
+
+  // x := a*x    (= a^((q+1)/2))
+  if (!BN_mod_mul(x, x, A, p, ctx)) {
+    goto end;
+  }
+
+  while (1) {
+    // Now  b  is  a^q * y^k  for some even  k  (0 <= k < 2^E
+    // where  E  refers to the original value of  e,  which we
+    // don't keep in a variable),  and  x  is  a^((q+1)/2) * y^(k/2).
+    //
+    // We have  a*b = x^2,
+    //    y^2^(e-1) = -1,
+    //    b^2^(e-1) = 1.
+
+    if (BN_is_one(b)) {
+      if (!BN_copy(ret, x)) {
+        goto end;
+      }
+      err = 0;
+      goto vrfy;
+    }
+
+
+    // find smallest  i  such that  b^(2^i) = 1
+    i = 1;
+    if (!BN_mod_sqr(t, b, p, ctx)) {
+      goto end;
+    }
+    while (!BN_is_one(t)) {
+      i++;
+      if (i == e) {
+        OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+        goto end;
+      }
+      if (!BN_mod_mul(t, t, t, p, ctx)) {
+        goto end;
+      }
+    }
+
+
+    // t := y^2^(e - i - 1)
+    if (!BN_copy(t, y)) {
+      goto end;
+    }
+    for (j = e - i - 1; j > 0; j--) {
+      if (!BN_mod_sqr(t, t, p, ctx)) {
+        goto end;
+      }
+    }
+    if (!BN_mod_mul(y, t, t, p, ctx) ||
+        !BN_mod_mul(x, x, t, p, ctx) ||
+        !BN_mod_mul(b, b, y, p, ctx)) {
+      goto end;
+    }
+    e = i;
+  }
+
+vrfy:
+  if (!err) {
+    // verify the result -- the input might have been not a square
+    // (test added in 0.9.8)
+
+    if (!BN_mod_sqr(x, ret, p, ctx)) {
+      err = 1;
+    }
+
+    if (!err && 0 != BN_cmp(x, A)) {
+      OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+      err = 1;
+    }
+  }
+
+end:
+  if (err) {
+    if (ret != in) {
+      BN_clear_free(ret);
+    }
+    ret = NULL;
+  }
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int BN_sqrt(BIGNUM *out_sqrt, const BIGNUM *in, BN_CTX *ctx) {
+  BIGNUM *estimate, *tmp, *delta, *last_delta, *tmp2;
+  int ok = 0, last_delta_valid = 0;
+
+  if (in->neg) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NEGATIVE_NUMBER);
+    return 0;
+  }
+  if (BN_is_zero(in)) {
+    BN_zero(out_sqrt);
+    return 1;
+  }
+
+  BN_CTX_start(ctx);
+  if (out_sqrt == in) {
+    estimate = BN_CTX_get(ctx);
+  } else {
+    estimate = out_sqrt;
+  }
+  tmp = BN_CTX_get(ctx);
+  last_delta = BN_CTX_get(ctx);
+  delta = BN_CTX_get(ctx);
+  if (estimate == NULL || tmp == NULL || last_delta == NULL || delta == NULL) {
+    OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  // We estimate that the square root of an n-bit number is 2^{n/2}.
+  if (!BN_lshift(estimate, BN_value_one(), BN_num_bits(in)/2)) {
+    goto err;
+  }
+
+  // This is Newton's method for finding a root of the equation |estimate|^2 -
+  // |in| = 0.
+  for (;;) {
+    // |estimate| = 1/2 * (|estimate| + |in|/|estimate|)
+    if (!BN_div(tmp, NULL, in, estimate, ctx) ||
+        !BN_add(tmp, tmp, estimate) ||
+        !BN_rshift1(estimate, tmp) ||
+        // |tmp| = |estimate|^2
+        !BN_sqr(tmp, estimate, ctx) ||
+        // |delta| = |in| - |tmp|
+        !BN_sub(delta, in, tmp)) {
+      OPENSSL_PUT_ERROR(BN, ERR_R_BN_LIB);
+      goto err;
+    }
+
+    delta->neg = 0;
+    // The difference between |in| and |estimate| squared is required to always
+    // decrease. This ensures that the loop always terminates, but I don't have
+    // a proof that it always finds the square root for a given square.
+    if (last_delta_valid && BN_cmp(delta, last_delta) >= 0) {
+      break;
+    }
+
+    last_delta_valid = 1;
+
+    tmp2 = last_delta;
+    last_delta = delta;
+    delta = tmp2;
+  }
+
+  if (BN_cmp(tmp, in) != 0) {
+    OPENSSL_PUT_ERROR(BN, BN_R_NOT_A_SQUARE);
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  if (ok && out_sqrt == in && !BN_copy(out_sqrt, estimate)) {
+    ok = 0;
+  }
+  BN_CTX_end(ctx);
+  return ok;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c
new file mode 100644
index 0000000..66956d9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c	
@@ -0,0 +1,284 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/aead.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+size_t EVP_AEAD_key_length(const EVP_AEAD *aead) { return aead->key_len; }
+
+size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead) { return aead->nonce_len; }
+
+size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead) { return aead->overhead; }
+
+size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead) { return aead->max_tag_len; }
+
+void EVP_AEAD_CTX_zero(EVP_AEAD_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_AEAD_CTX));
+}
+
+EVP_AEAD_CTX *EVP_AEAD_CTX_new(const EVP_AEAD *aead, const uint8_t *key,
+                               size_t key_len, size_t tag_len) {
+  EVP_AEAD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_AEAD_CTX));
+  EVP_AEAD_CTX_zero(ctx);
+
+  if (EVP_AEAD_CTX_init(ctx, aead, key, key_len, tag_len, NULL)) {
+    return ctx;
+  }
+
+  EVP_AEAD_CTX_free(ctx);
+  return NULL;
+}
+
+void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx) {
+  EVP_AEAD_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                      const uint8_t *key, size_t key_len, size_t tag_len,
+                      ENGINE *impl) {
+  if (!aead->init) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_DIRECTION_SET);
+    ctx->aead = NULL;
+    return 0;
+  }
+  return EVP_AEAD_CTX_init_with_direction(ctx, aead, key, key_len, tag_len,
+                                          evp_aead_open);
+}
+
+int EVP_AEAD_CTX_init_with_direction(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                                     const uint8_t *key, size_t key_len,
+                                     size_t tag_len,
+                                     enum evp_aead_direction_t dir) {
+  if (key_len != aead->key_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_KEY_SIZE);
+    ctx->aead = NULL;
+    return 0;
+  }
+
+  ctx->aead = aead;
+
+  int ok;
+  if (aead->init) {
+    ok = aead->init(ctx, key, key_len, tag_len);
+  } else {
+    ok = aead->init_with_direction(ctx, key, key_len, tag_len, dir);
+  }
+
+  if (!ok) {
+    ctx->aead = NULL;
+  }
+
+  return ok;
+}
+
+void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx) {
+  if (ctx->aead == NULL) {
+    return;
+  }
+  ctx->aead->cleanup(ctx);
+  ctx->aead = NULL;
+}
+
+// check_alias returns 1 if |out| is compatible with |in| and 0 otherwise. If
+// |in| and |out| alias, we require that |in| == |out|.
+static int check_alias(const uint8_t *in, size_t in_len, const uint8_t *out,
+                       size_t out_len) {
+  if (!buffers_alias(in, in_len, out, out_len)) {
+    return 1;
+  }
+
+  return in == out;
+}
+
+int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                      size_t max_out_len, const uint8_t *nonce,
+                      size_t nonce_len, const uint8_t *in, size_t in_len,
+                      const uint8_t *ad, size_t ad_len) {
+  if (in_len + ctx->aead->overhead < in_len /* overflow */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    goto error;
+  }
+
+  if (max_out_len < in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    goto error;
+  }
+
+  if (!check_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  size_t out_tag_len;
+  if (ctx->aead->seal_scatter(ctx, out, out + in_len, &out_tag_len,
+                              max_out_len - in_len, nonce, nonce_len, in,
+                              in_len, NULL, 0, ad, ad_len)) {
+    *out_len = in_len + out_tag_len;
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't send raw data.
+  OPENSSL_memset(out, 0, max_out_len);
+  *out_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag, size_t
+    *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce, size_t
+    nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  // |in| and |out| may alias exactly, |out_tag| may not alias.
+  if (!check_alias(in, in_len, out, in_len) ||
+      buffers_alias(out, in_len, out_tag, max_out_tag_len) ||
+      buffers_alias(in, in_len, out_tag, max_out_tag_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (!ctx->aead->seal_scatter_supports_extra_in && extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    goto error;
+  }
+
+  if (ctx->aead->seal_scatter(ctx, out, out_tag, out_tag_len, max_out_tag_len,
+                              nonce, nonce_len, in, in_len, extra_in,
+                              extra_in_len, ad, ad_len)) {
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't send raw data.
+  OPENSSL_memset(out, 0, in_len);
+  OPENSSL_memset(out_tag, 0, max_out_tag_len);
+  *out_tag_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                      size_t max_out_len, const uint8_t *nonce,
+                      size_t nonce_len, const uint8_t *in, size_t in_len,
+                      const uint8_t *ad, size_t ad_len) {
+  if (!check_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (ctx->aead->open) {
+    if (!ctx->aead->open(ctx, out, out_len, max_out_len, nonce, nonce_len, in,
+                        in_len, ad, ad_len)) {
+      goto error;
+    }
+    return 1;
+  }
+
+  // AEADs that use the default implementation of open() must set |tag_len| at
+  // initialization time.
+  assert(ctx->tag_len);
+
+  if (in_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    goto error;
+  }
+
+  size_t plaintext_len = in_len - ctx->tag_len;
+  if (max_out_len < plaintext_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    goto error;
+  }
+  if (EVP_AEAD_CTX_open_gather(ctx, out, nonce, nonce_len, in, plaintext_len,
+                               in + plaintext_len, ctx->tag_len, ad, ad_len)) {
+    *out_len = plaintext_len;
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't try and process bad
+  // data.
+  OPENSSL_memset(out, 0, max_out_len);
+  *out_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                             const uint8_t *nonce, size_t nonce_len,
+                             const uint8_t *in, size_t in_len,
+                             const uint8_t *in_tag, size_t in_tag_len,
+                             const uint8_t *ad, size_t ad_len) {
+  if (!check_alias(in, in_len, out, in_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (!ctx->aead->open_gather) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_NOT_IMPLEMENTED);
+    goto error;
+  }
+
+  if (ctx->aead->open_gather(ctx, out, nonce, nonce_len, in, in_len, in_tag,
+                             in_tag_len, ad, ad_len)) {
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't try and process bad
+  // data.
+  OPENSSL_memset(out, 0, in_len);
+  return 0;
+}
+
+const EVP_AEAD *EVP_AEAD_CTX_aead(const EVP_AEAD_CTX *ctx) { return ctx->aead; }
+
+int EVP_AEAD_CTX_get_iv(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                        size_t *out_len) {
+  if (ctx->aead->get_iv == NULL) {
+    return 0;
+  }
+
+  return ctx->aead->get_iv(ctx, out_iv, out_len);
+}
+
+int EVP_AEAD_CTX_tag_len(const EVP_AEAD_CTX *ctx, size_t *out_tag_len,
+                         const size_t in_len, const size_t extra_in_len) {
+  assert(ctx->aead->seal_scatter_supports_extra_in || !extra_in_len);
+
+  if (ctx->aead->tag_len) {
+    *out_tag_len = ctx->aead->tag_len(ctx, in_len, extra_in_len);
+    return 1;
+  }
+
+  if (extra_in_len + ctx->tag_len < extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, ERR_R_OVERFLOW);
+    *out_tag_len = 0;
+    return 0;
+  }
+  *out_tag_len = extra_in_len + ctx->tag_len;
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c.grpc_back
new file mode 100644
index 0000000..8d2ad04
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/aead.c.grpc_back	
@@ -0,0 +1,284 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/aead.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/cipher.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+size_t EVP_AEAD_key_length(const EVP_AEAD *aead) { return aead->key_len; }
+
+size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead) { return aead->nonce_len; }
+
+size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead) { return aead->overhead; }
+
+size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead) { return aead->max_tag_len; }
+
+void EVP_AEAD_CTX_zero(EVP_AEAD_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_AEAD_CTX));
+}
+
+EVP_AEAD_CTX *EVP_AEAD_CTX_new(const EVP_AEAD *aead, const uint8_t *key,
+                               size_t key_len, size_t tag_len) {
+  EVP_AEAD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_AEAD_CTX));
+  EVP_AEAD_CTX_zero(ctx);
+
+  if (EVP_AEAD_CTX_init(ctx, aead, key, key_len, tag_len, NULL)) {
+    return ctx;
+  }
+
+  EVP_AEAD_CTX_free(ctx);
+  return NULL;
+}
+
+void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx) {
+  EVP_AEAD_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                      const uint8_t *key, size_t key_len, size_t tag_len,
+                      ENGINE *impl) {
+  if (!aead->init) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_DIRECTION_SET);
+    ctx->aead = NULL;
+    return 0;
+  }
+  return EVP_AEAD_CTX_init_with_direction(ctx, aead, key, key_len, tag_len,
+                                          evp_aead_open);
+}
+
+int EVP_AEAD_CTX_init_with_direction(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                                     const uint8_t *key, size_t key_len,
+                                     size_t tag_len,
+                                     enum evp_aead_direction_t dir) {
+  if (key_len != aead->key_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_KEY_SIZE);
+    ctx->aead = NULL;
+    return 0;
+  }
+
+  ctx->aead = aead;
+
+  int ok;
+  if (aead->init) {
+    ok = aead->init(ctx, key, key_len, tag_len);
+  } else {
+    ok = aead->init_with_direction(ctx, key, key_len, tag_len, dir);
+  }
+
+  if (!ok) {
+    ctx->aead = NULL;
+  }
+
+  return ok;
+}
+
+void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx) {
+  if (ctx->aead == NULL) {
+    return;
+  }
+  ctx->aead->cleanup(ctx);
+  ctx->aead = NULL;
+}
+
+// check_alias returns 1 if |out| is compatible with |in| and 0 otherwise. If
+// |in| and |out| alias, we require that |in| == |out|.
+static int check_alias(const uint8_t *in, size_t in_len, const uint8_t *out,
+                       size_t out_len) {
+  if (!buffers_alias(in, in_len, out, out_len)) {
+    return 1;
+  }
+
+  return in == out;
+}
+
+int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                      size_t max_out_len, const uint8_t *nonce,
+                      size_t nonce_len, const uint8_t *in, size_t in_len,
+                      const uint8_t *ad, size_t ad_len) {
+  if (in_len + ctx->aead->overhead < in_len /* overflow */) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    goto error;
+  }
+
+  if (max_out_len < in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    goto error;
+  }
+
+  if (!check_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  size_t out_tag_len;
+  if (ctx->aead->seal_scatter(ctx, out, out + in_len, &out_tag_len,
+                              max_out_len - in_len, nonce, nonce_len, in,
+                              in_len, NULL, 0, ad, ad_len)) {
+    *out_len = in_len + out_tag_len;
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't send raw data.
+  OPENSSL_memset(out, 0, max_out_len);
+  *out_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag, size_t
+    *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce, size_t
+    nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  // |in| and |out| may alias exactly, |out_tag| may not alias.
+  if (!check_alias(in, in_len, out, in_len) ||
+      buffers_alias(out, in_len, out_tag, max_out_tag_len) ||
+      buffers_alias(in, in_len, out_tag, max_out_tag_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (!ctx->aead->seal_scatter_supports_extra_in && extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_OPERATION);
+    goto error;
+  }
+
+  if (ctx->aead->seal_scatter(ctx, out, out_tag, out_tag_len, max_out_tag_len,
+                              nonce, nonce_len, in, in_len, extra_in,
+                              extra_in_len, ad, ad_len)) {
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't send raw data.
+  OPENSSL_memset(out, 0, in_len);
+  OPENSSL_memset(out_tag, 0, max_out_tag_len);
+  *out_tag_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+                      size_t max_out_len, const uint8_t *nonce,
+                      size_t nonce_len, const uint8_t *in, size_t in_len,
+                      const uint8_t *ad, size_t ad_len) {
+  if (!check_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (ctx->aead->open) {
+    if (!ctx->aead->open(ctx, out, out_len, max_out_len, nonce, nonce_len, in,
+                        in_len, ad, ad_len)) {
+      goto error;
+    }
+    return 1;
+  }
+
+  // AEADs that use the default implementation of open() must set |tag_len| at
+  // initialization time.
+  assert(ctx->tag_len);
+
+  if (in_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    goto error;
+  }
+
+  size_t plaintext_len = in_len - ctx->tag_len;
+  if (max_out_len < plaintext_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    goto error;
+  }
+  if (EVP_AEAD_CTX_open_gather(ctx, out, nonce, nonce_len, in, plaintext_len,
+                               in + plaintext_len, ctx->tag_len, ad, ad_len)) {
+    *out_len = plaintext_len;
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't try and process bad
+  // data.
+  OPENSSL_memset(out, 0, max_out_len);
+  *out_len = 0;
+  return 0;
+}
+
+int EVP_AEAD_CTX_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                             const uint8_t *nonce, size_t nonce_len,
+                             const uint8_t *in, size_t in_len,
+                             const uint8_t *in_tag, size_t in_tag_len,
+                             const uint8_t *ad, size_t ad_len) {
+  if (!check_alias(in, in_len, out, in_len)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_OUTPUT_ALIASES_INPUT);
+    goto error;
+  }
+
+  if (!ctx->aead->open_gather) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_NOT_IMPLEMENTED);
+    goto error;
+  }
+
+  if (ctx->aead->open_gather(ctx, out, nonce, nonce_len, in, in_len, in_tag,
+                             in_tag_len, ad, ad_len)) {
+    return 1;
+  }
+
+error:
+  // In the event of an error, clear the output buffer so that a caller
+  // that doesn't check the return value doesn't try and process bad
+  // data.
+  OPENSSL_memset(out, 0, in_len);
+  return 0;
+}
+
+const EVP_AEAD *EVP_AEAD_CTX_aead(const EVP_AEAD_CTX *ctx) { return ctx->aead; }
+
+int EVP_AEAD_CTX_get_iv(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                        size_t *out_len) {
+  if (ctx->aead->get_iv == NULL) {
+    return 0;
+  }
+
+  return ctx->aead->get_iv(ctx, out_iv, out_len);
+}
+
+int EVP_AEAD_CTX_tag_len(const EVP_AEAD_CTX *ctx, size_t *out_tag_len,
+                         const size_t in_len, const size_t extra_in_len) {
+  assert(ctx->aead->seal_scatter_supports_extra_in || !extra_in_len);
+
+  if (ctx->aead->tag_len) {
+    *out_tag_len = ctx->aead->tag_len(ctx, in_len, extra_in_len);
+    return 1;
+  }
+
+  if (extra_in_len + ctx->tag_len < extra_in_len) {
+    OPENSSL_PUT_ERROR(CIPHER, ERR_R_OVERFLOW);
+    *out_tag_len = 0;
+    return 0;
+  }
+  *out_tag_len = extra_in_len + ctx->tag_len;
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c
new file mode 100644
index 0000000..15a85ea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c	
@@ -0,0 +1,620 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_CIPHER_CTX));
+}
+
+EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) {
+  EVP_CIPHER_CTX *ctx = OPENSSL_malloc(sizeof(EVP_CIPHER_CTX));
+  if (ctx) {
+    EVP_CIPHER_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) {
+  if (c->cipher != NULL && c->cipher->cleanup) {
+    c->cipher->cleanup(c);
+  }
+  OPENSSL_free(c->cipher_data);
+
+  OPENSSL_memset(c, 0, sizeof(EVP_CIPHER_CTX));
+  return 1;
+}
+
+void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) {
+  if (ctx) {
+    EVP_CIPHER_CTX_cleanup(ctx);
+    OPENSSL_free(ctx);
+  }
+}
+
+int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) {
+  if (in == NULL || in->cipher == NULL) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INPUT_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EVP_CIPHER_CTX_cleanup(out);
+  OPENSSL_memcpy(out, in, sizeof(EVP_CIPHER_CTX));
+
+  if (in->cipher_data && in->cipher->ctx_size) {
+    out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
+    if (!out->cipher_data) {
+      out->cipher = NULL;
+      OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    OPENSSL_memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
+  }
+
+  if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY) {
+    if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
+      out->cipher = NULL;
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) {
+  EVP_CIPHER_CTX_cleanup(ctx);
+  EVP_CIPHER_CTX_init(ctx);
+  return 1;
+}
+
+int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                      ENGINE *engine, const uint8_t *key, const uint8_t *iv,
+                      int enc) {
+  if (enc == -1) {
+    enc = ctx->encrypt;
+  } else {
+    if (enc) {
+      enc = 1;
+    }
+    ctx->encrypt = enc;
+  }
+
+  if (cipher) {
+    // Ensure a context left from last time is cleared (the previous check
+    // attempted to avoid this if the same ENGINE and EVP_CIPHER could be
+    // used).
+    if (ctx->cipher) {
+      EVP_CIPHER_CTX_cleanup(ctx);
+      // Restore encrypt and flags
+      ctx->encrypt = enc;
+    }
+
+    ctx->cipher = cipher;
+    if (ctx->cipher->ctx_size) {
+      ctx->cipher_data = OPENSSL_malloc(ctx->cipher->ctx_size);
+      if (!ctx->cipher_data) {
+        ctx->cipher = NULL;
+        OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    } else {
+      ctx->cipher_data = NULL;
+    }
+
+    ctx->key_len = cipher->key_len;
+    ctx->flags = 0;
+
+    if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
+      if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
+        ctx->cipher = NULL;
+        OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INITIALIZATION_ERROR);
+        return 0;
+      }
+    }
+  } else if (!ctx->cipher) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
+    return 0;
+  }
+
+  // we assume block size is a power of 2 in *cryptUpdate
+  assert(ctx->cipher->block_size == 1 || ctx->cipher->block_size == 8 ||
+         ctx->cipher->block_size == 16);
+
+  if (!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
+    switch (EVP_CIPHER_CTX_mode(ctx)) {
+      case EVP_CIPH_STREAM_CIPHER:
+      case EVP_CIPH_ECB_MODE:
+        break;
+
+      case EVP_CIPH_CFB_MODE:
+        ctx->num = 0;
+        OPENSSL_FALLTHROUGH;
+
+      case EVP_CIPH_CBC_MODE:
+        assert(EVP_CIPHER_CTX_iv_length(ctx) <= sizeof(ctx->iv));
+        if (iv) {
+          OPENSSL_memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+        }
+        OPENSSL_memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+        break;
+
+      case EVP_CIPH_CTR_MODE:
+      case EVP_CIPH_OFB_MODE:
+        ctx->num = 0;
+        // Don't reuse IV for CTR mode
+        if (iv) {
+          OPENSSL_memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+        }
+        break;
+
+      default:
+        return 0;
+    }
+  }
+
+  if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
+    if (!ctx->cipher->init(ctx, key, iv, enc)) {
+      return 0;
+    }
+  }
+
+  ctx->buf_len = 0;
+  ctx->final_used = 0;
+  ctx->block_mask = ctx->cipher->block_size - 1;
+  return 1;
+}
+
+int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                       ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
+}
+
+int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                       ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
+}
+
+int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, int in_len) {
+  int i, j, bl;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    i = ctx->cipher->cipher(ctx, out, in, in_len);
+    if (i < 0) {
+      return 0;
+    } else {
+      *out_len = i;
+    }
+    return 1;
+  }
+
+  if (in_len <= 0) {
+    *out_len = 0;
+    return in_len == 0;
+  }
+
+  if (ctx->buf_len == 0 && (in_len & ctx->block_mask) == 0) {
+    if (ctx->cipher->cipher(ctx, out, in, in_len)) {
+      *out_len = in_len;
+      return 1;
+    } else {
+      *out_len = 0;
+      return 0;
+    }
+  }
+
+  i = ctx->buf_len;
+  bl = ctx->cipher->block_size;
+  assert(bl <= (int)sizeof(ctx->buf));
+  if (i != 0) {
+    if (bl - i > in_len) {
+      OPENSSL_memcpy(&ctx->buf[i], in, in_len);
+      ctx->buf_len += in_len;
+      *out_len = 0;
+      return 1;
+    } else {
+      j = bl - i;
+      OPENSSL_memcpy(&ctx->buf[i], in, j);
+      if (!ctx->cipher->cipher(ctx, out, ctx->buf, bl)) {
+        return 0;
+      }
+      in_len -= j;
+      in += j;
+      out += bl;
+      *out_len = bl;
+    }
+  } else {
+    *out_len = 0;
+  }
+
+  i = in_len & ctx->block_mask;
+  in_len -= i;
+  if (in_len > 0) {
+    if (!ctx->cipher->cipher(ctx, out, in, in_len)) {
+      return 0;
+    }
+    *out_len += in_len;
+  }
+
+  if (i != 0) {
+    OPENSSL_memcpy(ctx->buf, &in[in_len], i);
+  }
+  ctx->buf_len = i;
+  return 1;
+}
+
+int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
+  int n, ret;
+  unsigned int i, b, bl;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    ret = ctx->cipher->cipher(ctx, out, NULL, 0);
+    if (ret < 0) {
+      return 0;
+    } else {
+      *out_len = ret;
+    }
+    return 1;
+  }
+
+  b = ctx->cipher->block_size;
+  assert(b <= sizeof(ctx->buf));
+  if (b == 1) {
+    *out_len = 0;
+    return 1;
+  }
+
+  bl = ctx->buf_len;
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    if (bl) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+      return 0;
+    }
+    *out_len = 0;
+    return 1;
+  }
+
+  n = b - bl;
+  for (i = bl; i < b; i++) {
+    ctx->buf[i] = n;
+  }
+  ret = ctx->cipher->cipher(ctx, out, ctx->buf, b);
+
+  if (ret) {
+    *out_len = b;
+  }
+
+  return ret;
+}
+
+int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, int in_len) {
+  int fix_len;
+  unsigned int b;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    int r = ctx->cipher->cipher(ctx, out, in, in_len);
+    if (r < 0) {
+      *out_len = 0;
+      return 0;
+    } else {
+      *out_len = r;
+    }
+    return 1;
+  }
+
+  if (in_len <= 0) {
+    *out_len = 0;
+    return in_len == 0;
+  }
+
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
+  }
+
+  b = ctx->cipher->block_size;
+  assert(b <= sizeof(ctx->final));
+
+  if (ctx->final_used) {
+    OPENSSL_memcpy(out, ctx->final, b);
+    out += b;
+    fix_len = 1;
+  } else {
+    fix_len = 0;
+  }
+
+  if (!EVP_EncryptUpdate(ctx, out, out_len, in, in_len)) {
+    return 0;
+  }
+
+  // if we have 'decrypted' a multiple of block size, make sure
+  // we have a copy of this last block
+  if (b > 1 && !ctx->buf_len) {
+    *out_len -= b;
+    ctx->final_used = 1;
+    OPENSSL_memcpy(ctx->final, &out[*out_len], b);
+  } else {
+    ctx->final_used = 0;
+  }
+
+  if (fix_len) {
+    *out_len += b;
+  }
+
+  return 1;
+}
+
+int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *out_len) {
+  int i, n;
+  unsigned int b;
+  *out_len = 0;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    i = ctx->cipher->cipher(ctx, out, NULL, 0);
+    if (i < 0) {
+      return 0;
+    } else {
+      *out_len = i;
+    }
+    return 1;
+  }
+
+  b = ctx->cipher->block_size;
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    if (ctx->buf_len) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+      return 0;
+    }
+    *out_len = 0;
+    return 1;
+  }
+
+  if (b > 1) {
+    if (ctx->buf_len || !ctx->final_used) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_WRONG_FINAL_BLOCK_LENGTH);
+      return 0;
+    }
+    assert(b <= sizeof(ctx->final));
+
+    // The following assumes that the ciphertext has been authenticated.
+    // Otherwise it provides a padding oracle.
+    n = ctx->final[b - 1];
+    if (n == 0 || n > (int)b) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+
+    for (i = 0; i < n; i++) {
+      if (ctx->final[--b] != n) {
+        OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+        return 0;
+      }
+    }
+
+    n = ctx->cipher->block_size - n;
+    for (i = 0; i < n; i++) {
+      out[i] = ctx->final[i];
+    }
+    *out_len = n;
+  } else {
+    *out_len = 0;
+  }
+
+  return 1;
+}
+
+int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+               size_t in_len) {
+  return ctx->cipher->cipher(ctx, out, in, in_len);
+}
+
+int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                     const uint8_t *in, int in_len) {
+  if (ctx->encrypt) {
+    return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
+  } else {
+    return EVP_DecryptUpdate(ctx, out, out_len, in, in_len);
+  }
+}
+
+int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
+  if (ctx->encrypt) {
+    return EVP_EncryptFinal_ex(ctx, out, out_len);
+  } else {
+    return EVP_DecryptFinal_ex(ctx, out, out_len);
+  }
+}
+
+const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher;
+}
+
+int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->nid;
+}
+
+int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx) {
+  return ctx->encrypt;
+}
+
+unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->block_size;
+}
+
+unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) {
+  return ctx->key_len;
+}
+
+unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->iv_len;
+}
+
+void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) {
+  return ctx->app_data;
+}
+
+void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) {
+  ctx->app_data = data;
+}
+
+uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->flags & ~EVP_CIPH_MODE_MASK;
+}
+
+uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->flags & EVP_CIPH_MODE_MASK;
+}
+
+int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command, int arg, void *ptr) {
+  int ret;
+  if (!ctx->cipher) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
+    return 0;
+  }
+
+  if (!ctx->cipher->ctrl) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_NOT_IMPLEMENTED);
+    return 0;
+  }
+
+  ret = ctx->cipher->ctrl(ctx, command, arg, ptr);
+  if (ret == -1) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED);
+    return 0;
+  }
+
+  return ret;
+}
+
+int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) {
+  if (pad) {
+    ctx->flags &= ~EVP_CIPH_NO_PADDING;
+  } else {
+    ctx->flags |= EVP_CIPH_NO_PADDING;
+  }
+  return 1;
+}
+
+int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, unsigned key_len) {
+  if (c->key_len == key_len) {
+    return 1;
+  }
+
+  if (key_len == 0 || !(c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_KEY_LENGTH);
+    return 0;
+  }
+
+  c->key_len = key_len;
+  return 1;
+}
+
+int EVP_CIPHER_nid(const EVP_CIPHER *cipher) { return cipher->nid; }
+
+unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher) {
+  return cipher->block_size;
+}
+
+unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher) {
+  return cipher->key_len;
+}
+
+unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) {
+  return cipher->iv_len;
+}
+
+uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher) {
+  return cipher->flags & ~EVP_CIPH_MODE_MASK;
+}
+
+uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher) {
+  return cipher->flags & EVP_CIPH_MODE_MASK;
+}
+
+int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                   const uint8_t *key, const uint8_t *iv, int enc) {
+  if (cipher) {
+    EVP_CIPHER_CTX_init(ctx);
+  }
+  return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
+}
+
+int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                    const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit(ctx, cipher, key, iv, 1);
+}
+
+int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                    const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit(ctx, cipher, key, iv, 0);
+}
+
+int EVP_add_cipher_alias(const char *a, const char *b) {
+  return 1;
+}
+
+void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx, uint32_t flags) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c.grpc_back
new file mode 100644
index 0000000..c50c6c5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/cipher.c.grpc_back	
@@ -0,0 +1,620 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_CIPHER_CTX));
+}
+
+EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) {
+  EVP_CIPHER_CTX *ctx = OPENSSL_malloc(sizeof(EVP_CIPHER_CTX));
+  if (ctx) {
+    EVP_CIPHER_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) {
+  if (c->cipher != NULL && c->cipher->cleanup) {
+    c->cipher->cleanup(c);
+  }
+  OPENSSL_free(c->cipher_data);
+
+  OPENSSL_memset(c, 0, sizeof(EVP_CIPHER_CTX));
+  return 1;
+}
+
+void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) {
+  if (ctx) {
+    EVP_CIPHER_CTX_cleanup(ctx);
+    OPENSSL_free(ctx);
+  }
+}
+
+int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) {
+  if (in == NULL || in->cipher == NULL) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INPUT_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EVP_CIPHER_CTX_cleanup(out);
+  OPENSSL_memcpy(out, in, sizeof(EVP_CIPHER_CTX));
+
+  if (in->cipher_data && in->cipher->ctx_size) {
+    out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
+    if (!out->cipher_data) {
+      out->cipher = NULL;
+      OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    OPENSSL_memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
+  }
+
+  if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY) {
+    if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
+      out->cipher = NULL;
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) {
+  EVP_CIPHER_CTX_cleanup(ctx);
+  EVP_CIPHER_CTX_init(ctx);
+  return 1;
+}
+
+int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                      ENGINE *engine, const uint8_t *key, const uint8_t *iv,
+                      int enc) {
+  if (enc == -1) {
+    enc = ctx->encrypt;
+  } else {
+    if (enc) {
+      enc = 1;
+    }
+    ctx->encrypt = enc;
+  }
+
+  if (cipher) {
+    // Ensure a context left from last time is cleared (the previous check
+    // attempted to avoid this if the same ENGINE and EVP_CIPHER could be
+    // used).
+    if (ctx->cipher) {
+      EVP_CIPHER_CTX_cleanup(ctx);
+      // Restore encrypt and flags
+      ctx->encrypt = enc;
+    }
+
+    ctx->cipher = cipher;
+    if (ctx->cipher->ctx_size) {
+      ctx->cipher_data = OPENSSL_malloc(ctx->cipher->ctx_size);
+      if (!ctx->cipher_data) {
+        ctx->cipher = NULL;
+        OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    } else {
+      ctx->cipher_data = NULL;
+    }
+
+    ctx->key_len = cipher->key_len;
+    ctx->flags = 0;
+
+    if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
+      if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
+        ctx->cipher = NULL;
+        OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INITIALIZATION_ERROR);
+        return 0;
+      }
+    }
+  } else if (!ctx->cipher) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
+    return 0;
+  }
+
+  // we assume block size is a power of 2 in *cryptUpdate
+  assert(ctx->cipher->block_size == 1 || ctx->cipher->block_size == 8 ||
+         ctx->cipher->block_size == 16);
+
+  if (!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
+    switch (EVP_CIPHER_CTX_mode(ctx)) {
+      case EVP_CIPH_STREAM_CIPHER:
+      case EVP_CIPH_ECB_MODE:
+        break;
+
+      case EVP_CIPH_CFB_MODE:
+        ctx->num = 0;
+        OPENSSL_FALLTHROUGH;
+
+      case EVP_CIPH_CBC_MODE:
+        assert(EVP_CIPHER_CTX_iv_length(ctx) <= sizeof(ctx->iv));
+        if (iv) {
+          OPENSSL_memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+        }
+        OPENSSL_memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+        break;
+
+      case EVP_CIPH_CTR_MODE:
+      case EVP_CIPH_OFB_MODE:
+        ctx->num = 0;
+        // Don't reuse IV for CTR mode
+        if (iv) {
+          OPENSSL_memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+        }
+        break;
+
+      default:
+        return 0;
+    }
+  }
+
+  if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
+    if (!ctx->cipher->init(ctx, key, iv, enc)) {
+      return 0;
+    }
+  }
+
+  ctx->buf_len = 0;
+  ctx->final_used = 0;
+  ctx->block_mask = ctx->cipher->block_size - 1;
+  return 1;
+}
+
+int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                       ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
+}
+
+int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                       ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
+}
+
+int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, int in_len) {
+  int i, j, bl;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    i = ctx->cipher->cipher(ctx, out, in, in_len);
+    if (i < 0) {
+      return 0;
+    } else {
+      *out_len = i;
+    }
+    return 1;
+  }
+
+  if (in_len <= 0) {
+    *out_len = 0;
+    return in_len == 0;
+  }
+
+  if (ctx->buf_len == 0 && (in_len & ctx->block_mask) == 0) {
+    if (ctx->cipher->cipher(ctx, out, in, in_len)) {
+      *out_len = in_len;
+      return 1;
+    } else {
+      *out_len = 0;
+      return 0;
+    }
+  }
+
+  i = ctx->buf_len;
+  bl = ctx->cipher->block_size;
+  assert(bl <= (int)sizeof(ctx->buf));
+  if (i != 0) {
+    if (bl - i > in_len) {
+      OPENSSL_memcpy(&ctx->buf[i], in, in_len);
+      ctx->buf_len += in_len;
+      *out_len = 0;
+      return 1;
+    } else {
+      j = bl - i;
+      OPENSSL_memcpy(&ctx->buf[i], in, j);
+      if (!ctx->cipher->cipher(ctx, out, ctx->buf, bl)) {
+        return 0;
+      }
+      in_len -= j;
+      in += j;
+      out += bl;
+      *out_len = bl;
+    }
+  } else {
+    *out_len = 0;
+  }
+
+  i = in_len & ctx->block_mask;
+  in_len -= i;
+  if (in_len > 0) {
+    if (!ctx->cipher->cipher(ctx, out, in, in_len)) {
+      return 0;
+    }
+    *out_len += in_len;
+  }
+
+  if (i != 0) {
+    OPENSSL_memcpy(ctx->buf, &in[in_len], i);
+  }
+  ctx->buf_len = i;
+  return 1;
+}
+
+int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
+  int n, ret;
+  unsigned int i, b, bl;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    ret = ctx->cipher->cipher(ctx, out, NULL, 0);
+    if (ret < 0) {
+      return 0;
+    } else {
+      *out_len = ret;
+    }
+    return 1;
+  }
+
+  b = ctx->cipher->block_size;
+  assert(b <= sizeof(ctx->buf));
+  if (b == 1) {
+    *out_len = 0;
+    return 1;
+  }
+
+  bl = ctx->buf_len;
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    if (bl) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+      return 0;
+    }
+    *out_len = 0;
+    return 1;
+  }
+
+  n = b - bl;
+  for (i = bl; i < b; i++) {
+    ctx->buf[i] = n;
+  }
+  ret = ctx->cipher->cipher(ctx, out, ctx->buf, b);
+
+  if (ret) {
+    *out_len = b;
+  }
+
+  return ret;
+}
+
+int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                      const uint8_t *in, int in_len) {
+  int fix_len;
+  unsigned int b;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    int r = ctx->cipher->cipher(ctx, out, in, in_len);
+    if (r < 0) {
+      *out_len = 0;
+      return 0;
+    } else {
+      *out_len = r;
+    }
+    return 1;
+  }
+
+  if (in_len <= 0) {
+    *out_len = 0;
+    return in_len == 0;
+  }
+
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
+  }
+
+  b = ctx->cipher->block_size;
+  assert(b <= sizeof(ctx->final));
+
+  if (ctx->final_used) {
+    OPENSSL_memcpy(out, ctx->final, b);
+    out += b;
+    fix_len = 1;
+  } else {
+    fix_len = 0;
+  }
+
+  if (!EVP_EncryptUpdate(ctx, out, out_len, in, in_len)) {
+    return 0;
+  }
+
+  // if we have 'decrypted' a multiple of block size, make sure
+  // we have a copy of this last block
+  if (b > 1 && !ctx->buf_len) {
+    *out_len -= b;
+    ctx->final_used = 1;
+    OPENSSL_memcpy(ctx->final, &out[*out_len], b);
+  } else {
+    ctx->final_used = 0;
+  }
+
+  if (fix_len) {
+    *out_len += b;
+  }
+
+  return 1;
+}
+
+int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *out_len) {
+  int i, n;
+  unsigned int b;
+  *out_len = 0;
+
+  if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
+    i = ctx->cipher->cipher(ctx, out, NULL, 0);
+    if (i < 0) {
+      return 0;
+    } else {
+      *out_len = i;
+    }
+    return 1;
+  }
+
+  b = ctx->cipher->block_size;
+  if (ctx->flags & EVP_CIPH_NO_PADDING) {
+    if (ctx->buf_len) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+      return 0;
+    }
+    *out_len = 0;
+    return 1;
+  }
+
+  if (b > 1) {
+    if (ctx->buf_len || !ctx->final_used) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_WRONG_FINAL_BLOCK_LENGTH);
+      return 0;
+    }
+    assert(b <= sizeof(ctx->final));
+
+    // The following assumes that the ciphertext has been authenticated.
+    // Otherwise it provides a padding oracle.
+    n = ctx->final[b - 1];
+    if (n == 0 || n > (int)b) {
+      OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+      return 0;
+    }
+
+    for (i = 0; i < n; i++) {
+      if (ctx->final[--b] != n) {
+        OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+        return 0;
+      }
+    }
+
+    n = ctx->cipher->block_size - n;
+    for (i = 0; i < n; i++) {
+      out[i] = ctx->final[i];
+    }
+    *out_len = n;
+  } else {
+    *out_len = 0;
+  }
+
+  return 1;
+}
+
+int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+               size_t in_len) {
+  return ctx->cipher->cipher(ctx, out, in, in_len);
+}
+
+int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
+                     const uint8_t *in, int in_len) {
+  if (ctx->encrypt) {
+    return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
+  } else {
+    return EVP_DecryptUpdate(ctx, out, out_len, in, in_len);
+  }
+}
+
+int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
+  if (ctx->encrypt) {
+    return EVP_EncryptFinal_ex(ctx, out, out_len);
+  } else {
+    return EVP_DecryptFinal_ex(ctx, out, out_len);
+  }
+}
+
+const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher;
+}
+
+int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->nid;
+}
+
+int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx) {
+  return ctx->encrypt;
+}
+
+unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->block_size;
+}
+
+unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) {
+  return ctx->key_len;
+}
+
+unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->iv_len;
+}
+
+void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) {
+  return ctx->app_data;
+}
+
+void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) {
+  ctx->app_data = data;
+}
+
+uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->flags & ~EVP_CIPH_MODE_MASK;
+}
+
+uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx) {
+  return ctx->cipher->flags & EVP_CIPH_MODE_MASK;
+}
+
+int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command, int arg, void *ptr) {
+  int ret;
+  if (!ctx->cipher) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
+    return 0;
+  }
+
+  if (!ctx->cipher->ctrl) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_NOT_IMPLEMENTED);
+    return 0;
+  }
+
+  ret = ctx->cipher->ctrl(ctx, command, arg, ptr);
+  if (ret == -1) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED);
+    return 0;
+  }
+
+  return ret;
+}
+
+int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) {
+  if (pad) {
+    ctx->flags &= ~EVP_CIPH_NO_PADDING;
+  } else {
+    ctx->flags |= EVP_CIPH_NO_PADDING;
+  }
+  return 1;
+}
+
+int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, unsigned key_len) {
+  if (c->key_len == key_len) {
+    return 1;
+  }
+
+  if (key_len == 0 || !(c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_KEY_LENGTH);
+    return 0;
+  }
+
+  c->key_len = key_len;
+  return 1;
+}
+
+int EVP_CIPHER_nid(const EVP_CIPHER *cipher) { return cipher->nid; }
+
+unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher) {
+  return cipher->block_size;
+}
+
+unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher) {
+  return cipher->key_len;
+}
+
+unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) {
+  return cipher->iv_len;
+}
+
+uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher) {
+  return cipher->flags & ~EVP_CIPH_MODE_MASK;
+}
+
+uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher) {
+  return cipher->flags & EVP_CIPH_MODE_MASK;
+}
+
+int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                   const uint8_t *key, const uint8_t *iv, int enc) {
+  if (cipher) {
+    EVP_CIPHER_CTX_init(ctx);
+  }
+  return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
+}
+
+int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                    const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit(ctx, cipher, key, iv, 1);
+}
+
+int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                    const uint8_t *key, const uint8_t *iv) {
+  return EVP_CipherInit(ctx, cipher, key, iv, 0);
+}
+
+int EVP_add_cipher_alias(const char *a, const char *b) {
+  return 1;
+}
+
+void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx, uint32_t flags) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c
new file mode 100644
index 0000000..808d339
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c	
@@ -0,0 +1,1302 @@
+/* ====================================================================
+ * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/aes.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../aes/internal.h"
+#include "../modes/internal.h"
+#include "../delocate.h"
+
+
+OPENSSL_MSVC_PRAGMA(warning(push))
+OPENSSL_MSVC_PRAGMA(warning(disable: 4702))  // Unreachable code.
+
+#if defined(BSAES)
+static void vpaes_ctr32_encrypt_blocks_with_bsaes(const uint8_t *in,
+                                                  uint8_t *out, size_t blocks,
+                                                  const AES_KEY *key,
+                                                  const uint8_t ivec[16]) {
+  // |bsaes_ctr32_encrypt_blocks| is faster than |vpaes_ctr32_encrypt_blocks|,
+  // but it takes at least one full 8-block batch to amortize the conversion.
+  if (blocks < 8) {
+    vpaes_ctr32_encrypt_blocks(in, out, blocks, key, ivec);
+    return;
+  }
+
+  size_t bsaes_blocks = blocks;
+  if (bsaes_blocks % 8 < 6) {
+    // |bsaes_ctr32_encrypt_blocks| internally works in 8-block batches. If the
+    // final batch is too small (under six blocks), it is faster to loop over
+    // |vpaes_encrypt|. Round |bsaes_blocks| down to a multiple of 8.
+    bsaes_blocks -= bsaes_blocks % 8;
+  }
+
+  AES_KEY bsaes;
+  vpaes_encrypt_key_to_bsaes(&bsaes, key);
+  bsaes_ctr32_encrypt_blocks(in, out, bsaes_blocks, &bsaes, ivec);
+  OPENSSL_cleanse(&bsaes, sizeof(bsaes));
+
+  in += 16 * bsaes_blocks;
+  out += 16 * bsaes_blocks;
+  blocks -= bsaes_blocks;
+
+  union {
+    uint32_t u32[4];
+    uint8_t u8[16];
+  } new_ivec;
+  memcpy(new_ivec.u8, ivec, 16);
+  uint32_t ctr = CRYPTO_bswap4(new_ivec.u32[3]) + bsaes_blocks;
+  new_ivec.u32[3] = CRYPTO_bswap4(ctr);
+
+  // Finish any remaining blocks with |vpaes_ctr32_encrypt_blocks|.
+  vpaes_ctr32_encrypt_blocks(in, out, blocks, key, new_ivec.u8);
+}
+#endif  // BSAES
+
+typedef struct {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  block128_f block;
+  union {
+    cbc128_f cbc;
+    ctr128_f ctr;
+  } stream;
+} EVP_AES_KEY;
+
+typedef struct {
+  GCM128_CONTEXT gcm;
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;         // AES key schedule to use
+  int key_set;  // Set if key initialised
+  int iv_set;   // Set if an iv is set
+  uint8_t *iv;  // Temporary IV store
+  int ivlen;         // IV length
+  int taglen;
+  int iv_gen;      // It is OK to generate IVs
+  ctr128_f ctr;
+} EVP_AES_GCM_CTX;
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  int ret, mode;
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK;
+  if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) {
+    if (hwaes_capable()) {
+      ret = aes_hw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = aes_hw_decrypt;
+      dat->stream.cbc = NULL;
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = aes_hw_cbc_encrypt;
+      }
+    } else if (bsaes_capable() && mode == EVP_CIPH_CBC_MODE) {
+      assert(vpaes_capable());
+      ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      if (ret == 0) {
+        vpaes_decrypt_key_to_bsaes(&dat->ks.ks, &dat->ks.ks);
+      }
+      // If |dat->stream.cbc| is provided, |dat->block| is never used.
+      dat->block = NULL;
+      dat->stream.cbc = bsaes_cbc_encrypt;
+    } else if (vpaes_capable()) {
+      ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = vpaes_decrypt;
+      dat->stream.cbc = NULL;
+#if defined(VPAES_CBC)
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = vpaes_cbc_encrypt;
+      }
+#endif
+    } else {
+      ret = aes_nohw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = aes_nohw_decrypt;
+      dat->stream.cbc = NULL;
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = aes_nohw_cbc_encrypt;
+      }
+    }
+  } else if (hwaes_capable()) {
+    ret = aes_hw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = aes_hw_encrypt;
+    dat->stream.cbc = NULL;
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = aes_hw_cbc_encrypt;
+    } else if (mode == EVP_CIPH_CTR_MODE) {
+      dat->stream.ctr = aes_hw_ctr32_encrypt_blocks;
+    }
+  } else if (vpaes_capable()) {
+    ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = vpaes_encrypt;
+    dat->stream.cbc = NULL;
+#if defined(VPAES_CBC)
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = vpaes_cbc_encrypt;
+    }
+#endif
+    if (mode == EVP_CIPH_CTR_MODE) {
+#if defined(BSAES)
+      assert(bsaes_capable());
+      dat->stream.ctr = vpaes_ctr32_encrypt_blocks_with_bsaes;
+#elif defined(VPAES_CTR32)
+      dat->stream.ctr = vpaes_ctr32_encrypt_blocks;
+#endif
+    }
+  } else {
+    ret = aes_nohw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = aes_nohw_encrypt;
+    dat->stream.cbc = NULL;
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = aes_nohw_cbc_encrypt;
+    }
+  }
+
+  if (ret < 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (dat->stream.cbc) {
+    (*dat->stream.cbc)(in, out, len, &dat->ks.ks, ctx->iv, ctx->encrypt);
+  } else if (ctx->encrypt) {
+    CRYPTO_cbc128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, dat->block);
+  } else {
+    CRYPTO_cbc128_decrypt(in, out, len, &dat->ks.ks, ctx->iv, dat->block);
+  }
+
+  return 1;
+}
+
+static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  size_t bl = ctx->cipher->block_size;
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (len < bl) {
+    return 1;
+  }
+
+  len -= bl;
+  for (size_t i = 0; i <= len; i += bl) {
+    (*dat->block)(in + i, out + i, &dat->ks.ks);
+  }
+
+  return 1;
+}
+
+static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (dat->stream.ctr) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks.ks, ctx->iv, ctx->buf,
+                                &ctx->num, dat->stream.ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, ctx->buf,
+                          &ctx->num, dat->block);
+  }
+  return 1;
+}
+
+static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  CRYPTO_ofb128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, &ctx->num,
+                        dat->block);
+  return 1;
+}
+
+ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_KEY *gcm_key,
+                         block128_f *out_block, const uint8_t *key,
+                         size_t key_bytes) {
+  if (hwaes_capable()) {
+    aes_hw_set_encrypt_key(key, key_bytes * 8, aes_key);
+    if (gcm_key != NULL) {
+      CRYPTO_gcm128_init_key(gcm_key, aes_key, aes_hw_encrypt, 1);
+    }
+    if (out_block) {
+      *out_block = aes_hw_encrypt;
+    }
+    return aes_hw_ctr32_encrypt_blocks;
+  }
+
+  if (vpaes_capable()) {
+    vpaes_set_encrypt_key(key, key_bytes * 8, aes_key);
+    if (out_block) {
+      *out_block = vpaes_encrypt;
+    }
+    if (gcm_key != NULL) {
+      CRYPTO_gcm128_init_key(gcm_key, aes_key, vpaes_encrypt, 0);
+    }
+#if defined(BSAES)
+    assert(bsaes_capable());
+    return vpaes_ctr32_encrypt_blocks_with_bsaes;
+#elif defined(VPAES_CTR32)
+    return vpaes_ctr32_encrypt_blocks;
+#else
+    return NULL;
+#endif
+  }
+
+  aes_nohw_set_encrypt_key(key, key_bytes * 8, aes_key);
+  if (gcm_key != NULL) {
+    CRYPTO_gcm128_init_key(gcm_key, aes_key, aes_nohw_encrypt, 0);
+  }
+  if (out_block) {
+    *out_block = aes_nohw_encrypt;
+  }
+  return aes_nohw_ctr32_encrypt_blocks;
+}
+
+#if defined(OPENSSL_32_BIT)
+#define EVP_AES_GCM_CTX_PADDING (4+8)
+#else
+#define EVP_AES_GCM_CTX_PADDING 8
+#endif
+
+static EVP_AES_GCM_CTX *aes_gcm_from_cipher_ctx(EVP_CIPHER_CTX *ctx) {
+#if defined(__GNUC__) || defined(__clang__)
+  OPENSSL_STATIC_ASSERT(
+      alignof(EVP_AES_GCM_CTX) <= 16,
+      "EVP_AES_GCM_CTX needs more alignment than this function provides");
+#endif
+
+  // |malloc| guarantees up to 4-byte alignment on 32-bit and 8-byte alignment
+  // on 64-bit systems, so we need to adjust to reach 16-byte alignment.
+  assert(ctx->cipher->ctx_size ==
+         sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING);
+
+  char *ptr = ctx->cipher_data;
+#if defined(OPENSSL_32_BIT)
+  assert((uintptr_t)ptr % 4 == 0);
+  ptr += (uintptr_t)ptr & 4;
+#endif
+  assert((uintptr_t)ptr % 8 == 0);
+  ptr += (uintptr_t)ptr & 8;
+  return (EVP_AES_GCM_CTX *)ptr;
+}
+
+static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                            const uint8_t *iv, int enc) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(ctx);
+  if (!iv && !key) {
+    return 1;
+  }
+  if (key) {
+    OPENSSL_memset(&gctx->gcm, 0, sizeof(gctx->gcm));
+    gctx->ctr = aes_ctr_set_key(&gctx->ks.ks, &gctx->gcm.gcm_key, NULL, key,
+                                ctx->key_len);
+    // If we have an iv can set it directly, otherwise use saved IV.
+    if (iv == NULL && gctx->iv_set) {
+      iv = gctx->iv;
+    }
+    if (iv) {
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen);
+      gctx->iv_set = 1;
+    }
+    gctx->key_set = 1;
+  } else {
+    // If key set use IV, otherwise copy
+    if (gctx->key_set) {
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen);
+    } else {
+      OPENSSL_memcpy(gctx->iv, iv, gctx->ivlen);
+    }
+    gctx->iv_set = 1;
+    gctx->iv_gen = 0;
+  }
+  return 1;
+}
+
+static void aes_gcm_cleanup(EVP_CIPHER_CTX *c) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(c);
+  OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
+  if (gctx->iv != c->iv) {
+    OPENSSL_free(gctx->iv);
+  }
+}
+
+// increment counter (64-bit int) by 1
+static void ctr64_inc(uint8_t *counter) {
+  int n = 8;
+  uint8_t c;
+
+  do {
+    --n;
+    c = counter[n];
+    ++c;
+    counter[n] = c;
+    if (c) {
+      return;
+    }
+  } while (n);
+}
+
+static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(c);
+  switch (type) {
+    case EVP_CTRL_INIT:
+      gctx->key_set = 0;
+      gctx->iv_set = 0;
+      gctx->ivlen = c->cipher->iv_len;
+      gctx->iv = c->iv;
+      gctx->taglen = -1;
+      gctx->iv_gen = 0;
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_IVLEN:
+      if (arg <= 0) {
+        return 0;
+      }
+
+      // Allocate memory for IV if needed
+      if (arg > EVP_MAX_IV_LENGTH && arg > gctx->ivlen) {
+        if (gctx->iv != c->iv) {
+          OPENSSL_free(gctx->iv);
+        }
+        gctx->iv = OPENSSL_malloc(arg);
+        if (!gctx->iv) {
+          return 0;
+        }
+      }
+      gctx->ivlen = arg;
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_TAG:
+      if (arg <= 0 || arg > 16 || c->encrypt) {
+        return 0;
+      }
+      OPENSSL_memcpy(c->buf, ptr, arg);
+      gctx->taglen = arg;
+      return 1;
+
+    case EVP_CTRL_AEAD_GET_TAG:
+      if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) {
+        return 0;
+      }
+      OPENSSL_memcpy(ptr, c->buf, arg);
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_IV_FIXED:
+      // Special case: -1 length restores whole IV
+      if (arg == -1) {
+        OPENSSL_memcpy(gctx->iv, ptr, gctx->ivlen);
+        gctx->iv_gen = 1;
+        return 1;
+      }
+      // Fixed field must be at least 4 bytes and invocation field
+      // at least 8.
+      if (arg < 4 || (gctx->ivlen - arg) < 8) {
+        return 0;
+      }
+      if (arg) {
+        OPENSSL_memcpy(gctx->iv, ptr, arg);
+      }
+      if (c->encrypt && !RAND_bytes(gctx->iv + arg, gctx->ivlen - arg)) {
+        return 0;
+      }
+      gctx->iv_gen = 1;
+      return 1;
+
+    case EVP_CTRL_GCM_IV_GEN:
+      if (gctx->iv_gen == 0 || gctx->key_set == 0) {
+        return 0;
+      }
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen);
+      if (arg <= 0 || arg > gctx->ivlen) {
+        arg = gctx->ivlen;
+      }
+      OPENSSL_memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
+      // Invocation field will be at least 8 bytes in size and
+      // so no need to check wrap around or increment more than
+      // last 8 bytes.
+      ctr64_inc(gctx->iv + gctx->ivlen - 8);
+      gctx->iv_set = 1;
+      return 1;
+
+    case EVP_CTRL_GCM_SET_IV_INV:
+      if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) {
+        return 0;
+      }
+      OPENSSL_memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen);
+      gctx->iv_set = 1;
+      return 1;
+
+    case EVP_CTRL_COPY: {
+      EVP_CIPHER_CTX *out = ptr;
+      EVP_AES_GCM_CTX *gctx_out = aes_gcm_from_cipher_ctx(out);
+      // |EVP_CIPHER_CTX_copy| copies this generically, but we must redo it in
+      // case |out->cipher_data| and |in->cipher_data| are differently aligned.
+      OPENSSL_memcpy(gctx_out, gctx, sizeof(EVP_AES_GCM_CTX));
+      if (gctx->iv == c->iv) {
+        gctx_out->iv = out->iv;
+      } else {
+        gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
+        if (!gctx_out->iv) {
+          return 0;
+        }
+        OPENSSL_memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
+      }
+      return 1;
+    }
+
+    default:
+      return -1;
+  }
+}
+
+static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(ctx);
+
+  // If not set up, return error
+  if (!gctx->key_set) {
+    return -1;
+  }
+  if (!gctx->iv_set) {
+    return -1;
+  }
+
+  if (in) {
+    if (out == NULL) {
+      if (!CRYPTO_gcm128_aad(&gctx->gcm, in, len)) {
+        return -1;
+      }
+    } else if (ctx->encrypt) {
+      if (gctx->ctr) {
+        if (!CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+                                         gctx->ctr)) {
+          return -1;
+        }
+      } else {
+        if (!CRYPTO_gcm128_encrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+          return -1;
+        }
+      }
+    } else {
+      if (gctx->ctr) {
+        if (!CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+                                         gctx->ctr)) {
+          return -1;
+        }
+      } else {
+        if (!CRYPTO_gcm128_decrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+          return -1;
+        }
+      }
+    }
+    return len;
+  } else {
+    if (!ctx->encrypt) {
+      if (gctx->taglen < 0 ||
+          !CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen)) {
+        return -1;
+      }
+      gctx->iv_set = 0;
+      return 0;
+    }
+    CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
+    gctx->taglen = 16;
+    // Don't reuse the IV
+    gctx->iv_set = 0;
+    return 0;
+  }
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_cbc;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ctr;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ecb;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ofb128;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_gcm;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_cbc;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ctr;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ecb;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ofb128;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_gcm;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_cbc;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ctr;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ecb;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ofb128;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_gcm;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+#if defined(HWAES_ECB)
+
+static int aes_hw_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                             const uint8_t *in, size_t len) {
+  size_t bl = ctx->cipher->block_size;
+
+  if (len < bl) {
+    return 1;
+  }
+
+  aes_hw_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_128_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ecb;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_192_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ecb;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_256_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ecb;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+#define EVP_ECB_CIPHER_FUNCTION(keybits)            \
+  const EVP_CIPHER *EVP_aes_##keybits##_ecb(void) { \
+    if (hwaes_capable()) {                          \
+      return aes_hw_##keybits##_ecb();              \
+    }                                               \
+    return aes_##keybits##_ecb_generic();           \
+  }
+
+#else
+
+#define EVP_ECB_CIPHER_FUNCTION(keybits)            \
+  const EVP_CIPHER *EVP_aes_##keybits##_ecb(void) { \
+    return aes_##keybits##_ecb_generic();           \
+  }
+
+#endif  // HWAES_ECB
+
+#define EVP_CIPHER_FUNCTION(keybits, mode)             \
+  const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \
+    return aes_##keybits##_##mode##_generic();         \
+  }
+
+EVP_CIPHER_FUNCTION(128, cbc)
+EVP_CIPHER_FUNCTION(128, ctr)
+EVP_CIPHER_FUNCTION(128, ofb)
+EVP_CIPHER_FUNCTION(128, gcm)
+
+EVP_CIPHER_FUNCTION(192, cbc)
+EVP_CIPHER_FUNCTION(192, ctr)
+EVP_CIPHER_FUNCTION(192, ofb)
+EVP_CIPHER_FUNCTION(192, gcm)
+
+EVP_CIPHER_FUNCTION(256, cbc)
+EVP_CIPHER_FUNCTION(256, ctr)
+EVP_CIPHER_FUNCTION(256, ofb)
+EVP_CIPHER_FUNCTION(256, gcm)
+
+EVP_ECB_CIPHER_FUNCTION(128)
+EVP_ECB_CIPHER_FUNCTION(192)
+EVP_ECB_CIPHER_FUNCTION(256)
+
+
+#define EVP_AEAD_AES_GCM_TAG_LEN 16
+
+struct aead_aes_gcm_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  GCM128_KEY gcm_key;
+  ctr128_f ctr;
+};
+
+static int aead_aes_gcm_init_impl(struct aead_aes_gcm_ctx *gcm_ctx,
+                                  size_t *out_tag_len, const uint8_t *key,
+                                  size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 192 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  }
+
+  if (tag_len > EVP_AEAD_AES_GCM_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  gcm_ctx->ctr =
+      aes_ctr_set_key(&gcm_ctx->ks.ks, &gcm_ctx->gcm_key, NULL, key, key_len);
+  *out_tag_len = tag_len;
+  return 1;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                             size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static void aead_aes_gcm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static int aead_aes_gcm_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     uint8_t *out_tag, size_t *out_tag_len,
+                                     size_t max_out_tag_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *extra_in,
+                                     size_t extra_in_len,
+                                     const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+
+  if (extra_in_len + ctx->tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+  if (max_out_tag_len < extra_in_len + ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+  if (nonce_len == 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  const AES_KEY *key = &gcm_ctx->ks.ks;
+
+  GCM128_CONTEXT gcm;
+  OPENSSL_memset(&gcm, 0, sizeof(gcm));
+  OPENSSL_memcpy(&gcm.gcm_key, &gcm_ctx->gcm_key, sizeof(gcm.gcm_key));
+  CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len);
+
+  if (ad_len > 0 && !CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
+    return 0;
+  }
+
+  if (gcm_ctx->ctr) {
+    if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, in, out, in_len,
+                                     gcm_ctx->ctr)) {
+      return 0;
+    }
+  } else {
+    if (!CRYPTO_gcm128_encrypt(&gcm, key, in, out, in_len)) {
+      return 0;
+    }
+  }
+
+  if (extra_in_len) {
+    if (gcm_ctx->ctr) {
+      if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, extra_in, out_tag,
+                                       extra_in_len, gcm_ctx->ctr)) {
+        return 0;
+      }
+    } else {
+      if (!CRYPTO_gcm128_encrypt(&gcm, key, extra_in, out_tag, extra_in_len)) {
+        return 0;
+      }
+    }
+  }
+
+  CRYPTO_gcm128_tag(&gcm, out_tag + extra_in_len, ctx->tag_len);
+  *out_tag_len = ctx->tag_len + extra_in_len;
+
+  return 1;
+}
+
+static int aead_aes_gcm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                    const uint8_t *nonce, size_t nonce_len,
+                                    const uint8_t *in, size_t in_len,
+                                    const uint8_t *in_tag, size_t in_tag_len,
+                                    const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+  uint8_t tag[EVP_AEAD_AES_GCM_TAG_LEN];
+
+  if (nonce_len == 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  const AES_KEY *key = &gcm_ctx->ks.ks;
+
+  GCM128_CONTEXT gcm;
+  OPENSSL_memset(&gcm, 0, sizeof(gcm));
+  OPENSSL_memcpy(&gcm.gcm_key, &gcm_ctx->gcm_key, sizeof(gcm.gcm_key));
+  CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len);
+
+  if (!CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
+    return 0;
+  }
+
+  if (gcm_ctx->ctr) {
+    if (!CRYPTO_gcm128_decrypt_ctr32(&gcm, key, in, out, in_len,
+                                     gcm_ctx->ctr)) {
+      return 0;
+    }
+  } else {
+    if (!CRYPTO_gcm128_decrypt(&gcm, key, in, out, in_len)) {
+      return 0;
+    }
+  }
+
+  CRYPTO_gcm128_tag(&gcm, tag, ctx->tag_len);
+  if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_192_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 24;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+struct aead_aes_gcm_tls12_ctx {
+  struct aead_aes_gcm_ctx gcm_ctx;
+  uint64_t min_next_nonce;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_tls12_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_tls12_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_tls12_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_tls12_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls12_ctx *) &ctx->state;
+
+  gcm_ctx->min_next_nonce = 0;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static int aead_aes_gcm_tls12_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_tls12_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls12_ctx *) &ctx->state;
+
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // The given nonces must be strictly monotonically increasing.
+  uint64_t given_counter;
+  OPENSSL_memcpy(&given_counter, nonce + nonce_len - sizeof(given_counter),
+                 sizeof(given_counter));
+  given_counter = CRYPTO_bswap8(given_counter);
+  if (given_counter == UINT64_MAX ||
+      given_counter < gcm_ctx->min_next_nonce) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE);
+    return 0;
+  }
+
+  gcm_ctx->min_next_nonce = given_counter + 1;
+
+  return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len,
+                                   max_out_tag_len, nonce, nonce_len, in,
+                                   in_len, extra_in, extra_in_len, ad, ad_len);
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls12) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls12_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls12) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls12_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+struct aead_aes_gcm_tls13_ctx {
+  struct aead_aes_gcm_ctx gcm_ctx;
+  uint64_t min_next_nonce;
+  uint64_t mask;
+  uint8_t first;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_tls13_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_tls13_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_tls13_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_tls13_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls13_ctx *) &ctx->state;
+
+  gcm_ctx->min_next_nonce = 0;
+  gcm_ctx->first = 1;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static int aead_aes_gcm_tls13_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_tls13_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls13_ctx *) &ctx->state;
+
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // The given nonces must be strictly monotonically increasing. See
+  // https://tools.ietf.org/html/rfc8446#section-5.3 for details of the TLS 1.3
+  // nonce construction.
+  uint64_t given_counter;
+  OPENSSL_memcpy(&given_counter, nonce + nonce_len - sizeof(given_counter),
+                 sizeof(given_counter));
+  given_counter = CRYPTO_bswap8(given_counter);
+
+  if (gcm_ctx->first) {
+    // In the first call the sequence number will be zero and therefore the
+    // given nonce will be 0 ^ mask = mask.
+    gcm_ctx->mask = given_counter;
+    gcm_ctx->first = 0;
+  }
+  given_counter ^= gcm_ctx->mask;
+
+  if (given_counter == UINT64_MAX ||
+      given_counter < gcm_ctx->min_next_nonce) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE);
+    return 0;
+  }
+
+  gcm_ctx->min_next_nonce = given_counter + 1;
+
+  return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len,
+                                   max_out_tag_len, nonce, nonce_len, in,
+                                   in_len, extra_in, extra_in_len, ad, ad_len);
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls13) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls13_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls13_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls13) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls13_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls13_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+int EVP_has_aes_hardware(void) {
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+  return hwaes_capable() && crypto_gcm_clmul_enabled();
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+  return hwaes_capable() && CRYPTO_is_ARMv8_PMULL_capable();
+#elif defined(OPENSSL_PPC64LE)
+  return CRYPTO_is_PPC64LE_vcrypto_capable();
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_MSVC_PRAGMA(warning(pop))
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c.grpc_back
new file mode 100644
index 0000000..8f4907f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_aes.c.grpc_back	
@@ -0,0 +1,1302 @@
+/* ====================================================================
+ * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/aead.h>
+#include <openssl/aes.h>
+#include <openssl/cipher.h>
+#include <openssl/cpu.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../aes/internal.h"
+#include "../modes/internal.h"
+#include "../delocate.h"
+
+
+OPENSSL_MSVC_PRAGMA(warning(push))
+OPENSSL_MSVC_PRAGMA(warning(disable: 4702))  // Unreachable code.
+
+#if defined(BSAES)
+static void vpaes_ctr32_encrypt_blocks_with_bsaes(const uint8_t *in,
+                                                  uint8_t *out, size_t blocks,
+                                                  const AES_KEY *key,
+                                                  const uint8_t ivec[16]) {
+  // |bsaes_ctr32_encrypt_blocks| is faster than |vpaes_ctr32_encrypt_blocks|,
+  // but it takes at least one full 8-block batch to amortize the conversion.
+  if (blocks < 8) {
+    vpaes_ctr32_encrypt_blocks(in, out, blocks, key, ivec);
+    return;
+  }
+
+  size_t bsaes_blocks = blocks;
+  if (bsaes_blocks % 8 < 6) {
+    // |bsaes_ctr32_encrypt_blocks| internally works in 8-block batches. If the
+    // final batch is too small (under six blocks), it is faster to loop over
+    // |vpaes_encrypt|. Round |bsaes_blocks| down to a multiple of 8.
+    bsaes_blocks -= bsaes_blocks % 8;
+  }
+
+  AES_KEY bsaes;
+  vpaes_encrypt_key_to_bsaes(&bsaes, key);
+  bsaes_ctr32_encrypt_blocks(in, out, bsaes_blocks, &bsaes, ivec);
+  OPENSSL_cleanse(&bsaes, sizeof(bsaes));
+
+  in += 16 * bsaes_blocks;
+  out += 16 * bsaes_blocks;
+  blocks -= bsaes_blocks;
+
+  union {
+    uint32_t u32[4];
+    uint8_t u8[16];
+  } new_ivec;
+  memcpy(new_ivec.u8, ivec, 16);
+  uint32_t ctr = CRYPTO_bswap4(new_ivec.u32[3]) + bsaes_blocks;
+  new_ivec.u32[3] = CRYPTO_bswap4(ctr);
+
+  // Finish any remaining blocks with |vpaes_ctr32_encrypt_blocks|.
+  vpaes_ctr32_encrypt_blocks(in, out, blocks, key, new_ivec.u8);
+}
+#endif  // BSAES
+
+typedef struct {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  block128_f block;
+  union {
+    cbc128_f cbc;
+    ctr128_f ctr;
+  } stream;
+} EVP_AES_KEY;
+
+typedef struct {
+  GCM128_CONTEXT gcm;
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;         // AES key schedule to use
+  int key_set;  // Set if key initialised
+  int iv_set;   // Set if an iv is set
+  uint8_t *iv;  // Temporary IV store
+  int ivlen;         // IV length
+  int taglen;
+  int iv_gen;      // It is OK to generate IVs
+  ctr128_f ctr;
+} EVP_AES_GCM_CTX;
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  int ret, mode;
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK;
+  if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) {
+    if (hwaes_capable()) {
+      ret = aes_hw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = aes_hw_decrypt;
+      dat->stream.cbc = NULL;
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = aes_hw_cbc_encrypt;
+      }
+    } else if (bsaes_capable() && mode == EVP_CIPH_CBC_MODE) {
+      assert(vpaes_capable());
+      ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      if (ret == 0) {
+        vpaes_decrypt_key_to_bsaes(&dat->ks.ks, &dat->ks.ks);
+      }
+      // If |dat->stream.cbc| is provided, |dat->block| is never used.
+      dat->block = NULL;
+      dat->stream.cbc = bsaes_cbc_encrypt;
+    } else if (vpaes_capable()) {
+      ret = vpaes_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = vpaes_decrypt;
+      dat->stream.cbc = NULL;
+#if defined(VPAES_CBC)
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = vpaes_cbc_encrypt;
+      }
+#endif
+    } else {
+      ret = aes_nohw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+      dat->block = aes_nohw_decrypt;
+      dat->stream.cbc = NULL;
+      if (mode == EVP_CIPH_CBC_MODE) {
+        dat->stream.cbc = aes_nohw_cbc_encrypt;
+      }
+    }
+  } else if (hwaes_capable()) {
+    ret = aes_hw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = aes_hw_encrypt;
+    dat->stream.cbc = NULL;
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = aes_hw_cbc_encrypt;
+    } else if (mode == EVP_CIPH_CTR_MODE) {
+      dat->stream.ctr = aes_hw_ctr32_encrypt_blocks;
+    }
+  } else if (vpaes_capable()) {
+    ret = vpaes_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = vpaes_encrypt;
+    dat->stream.cbc = NULL;
+#if defined(VPAES_CBC)
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = vpaes_cbc_encrypt;
+    }
+#endif
+    if (mode == EVP_CIPH_CTR_MODE) {
+#if defined(BSAES)
+      assert(bsaes_capable());
+      dat->stream.ctr = vpaes_ctr32_encrypt_blocks_with_bsaes;
+#elif defined(VPAES_CTR32)
+      dat->stream.ctr = vpaes_ctr32_encrypt_blocks;
+#endif
+    }
+  } else {
+    ret = aes_nohw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+    dat->block = aes_nohw_encrypt;
+    dat->stream.cbc = NULL;
+    if (mode == EVP_CIPH_CBC_MODE) {
+      dat->stream.cbc = aes_nohw_cbc_encrypt;
+    }
+  }
+
+  if (ret < 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (dat->stream.cbc) {
+    (*dat->stream.cbc)(in, out, len, &dat->ks.ks, ctx->iv, ctx->encrypt);
+  } else if (ctx->encrypt) {
+    CRYPTO_cbc128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, dat->block);
+  } else {
+    CRYPTO_cbc128_decrypt(in, out, len, &dat->ks.ks, ctx->iv, dat->block);
+  }
+
+  return 1;
+}
+
+static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  size_t bl = ctx->cipher->block_size;
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (len < bl) {
+    return 1;
+  }
+
+  len -= bl;
+  for (size_t i = 0; i <= len; i += bl) {
+    (*dat->block)(in + i, out + i, &dat->ks.ks);
+  }
+
+  return 1;
+}
+
+static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  if (dat->stream.ctr) {
+    CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks.ks, ctx->iv, ctx->buf,
+                                &ctx->num, dat->stream.ctr);
+  } else {
+    CRYPTO_ctr128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, ctx->buf,
+                          &ctx->num, dat->block);
+  }
+  return 1;
+}
+
+static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+  CRYPTO_ofb128_encrypt(in, out, len, &dat->ks.ks, ctx->iv, &ctx->num,
+                        dat->block);
+  return 1;
+}
+
+ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_KEY *gcm_key,
+                         block128_f *out_block, const uint8_t *key,
+                         size_t key_bytes) {
+  if (hwaes_capable()) {
+    aes_hw_set_encrypt_key(key, key_bytes * 8, aes_key);
+    if (gcm_key != NULL) {
+      CRYPTO_gcm128_init_key(gcm_key, aes_key, aes_hw_encrypt, 1);
+    }
+    if (out_block) {
+      *out_block = aes_hw_encrypt;
+    }
+    return aes_hw_ctr32_encrypt_blocks;
+  }
+
+  if (vpaes_capable()) {
+    vpaes_set_encrypt_key(key, key_bytes * 8, aes_key);
+    if (out_block) {
+      *out_block = vpaes_encrypt;
+    }
+    if (gcm_key != NULL) {
+      CRYPTO_gcm128_init_key(gcm_key, aes_key, vpaes_encrypt, 0);
+    }
+#if defined(BSAES)
+    assert(bsaes_capable());
+    return vpaes_ctr32_encrypt_blocks_with_bsaes;
+#elif defined(VPAES_CTR32)
+    return vpaes_ctr32_encrypt_blocks;
+#else
+    return NULL;
+#endif
+  }
+
+  aes_nohw_set_encrypt_key(key, key_bytes * 8, aes_key);
+  if (gcm_key != NULL) {
+    CRYPTO_gcm128_init_key(gcm_key, aes_key, aes_nohw_encrypt, 0);
+  }
+  if (out_block) {
+    *out_block = aes_nohw_encrypt;
+  }
+  return aes_nohw_ctr32_encrypt_blocks;
+}
+
+#if defined(OPENSSL_32_BIT)
+#define EVP_AES_GCM_CTX_PADDING (4+8)
+#else
+#define EVP_AES_GCM_CTX_PADDING 8
+#endif
+
+static EVP_AES_GCM_CTX *aes_gcm_from_cipher_ctx(EVP_CIPHER_CTX *ctx) {
+#if defined(__GNUC__) || defined(__clang__)
+  OPENSSL_STATIC_ASSERT(
+      alignof(EVP_AES_GCM_CTX) <= 16,
+      "EVP_AES_GCM_CTX needs more alignment than this function provides");
+#endif
+
+  // |malloc| guarantees up to 4-byte alignment on 32-bit and 8-byte alignment
+  // on 64-bit systems, so we need to adjust to reach 16-byte alignment.
+  assert(ctx->cipher->ctx_size ==
+         sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING);
+
+  char *ptr = ctx->cipher_data;
+#if defined(OPENSSL_32_BIT)
+  assert((uintptr_t)ptr % 4 == 0);
+  ptr += (uintptr_t)ptr & 4;
+#endif
+  assert((uintptr_t)ptr % 8 == 0);
+  ptr += (uintptr_t)ptr & 8;
+  return (EVP_AES_GCM_CTX *)ptr;
+}
+
+static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                            const uint8_t *iv, int enc) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(ctx);
+  if (!iv && !key) {
+    return 1;
+  }
+  if (key) {
+    OPENSSL_memset(&gctx->gcm, 0, sizeof(gctx->gcm));
+    gctx->ctr = aes_ctr_set_key(&gctx->ks.ks, &gctx->gcm.gcm_key, NULL, key,
+                                ctx->key_len);
+    // If we have an iv can set it directly, otherwise use saved IV.
+    if (iv == NULL && gctx->iv_set) {
+      iv = gctx->iv;
+    }
+    if (iv) {
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen);
+      gctx->iv_set = 1;
+    }
+    gctx->key_set = 1;
+  } else {
+    // If key set use IV, otherwise copy
+    if (gctx->key_set) {
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, iv, gctx->ivlen);
+    } else {
+      OPENSSL_memcpy(gctx->iv, iv, gctx->ivlen);
+    }
+    gctx->iv_set = 1;
+    gctx->iv_gen = 0;
+  }
+  return 1;
+}
+
+static void aes_gcm_cleanup(EVP_CIPHER_CTX *c) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(c);
+  OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
+  if (gctx->iv != c->iv) {
+    OPENSSL_free(gctx->iv);
+  }
+}
+
+// increment counter (64-bit int) by 1
+static void ctr64_inc(uint8_t *counter) {
+  int n = 8;
+  uint8_t c;
+
+  do {
+    --n;
+    c = counter[n];
+    ++c;
+    counter[n] = c;
+    if (c) {
+      return;
+    }
+  } while (n);
+}
+
+static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(c);
+  switch (type) {
+    case EVP_CTRL_INIT:
+      gctx->key_set = 0;
+      gctx->iv_set = 0;
+      gctx->ivlen = c->cipher->iv_len;
+      gctx->iv = c->iv;
+      gctx->taglen = -1;
+      gctx->iv_gen = 0;
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_IVLEN:
+      if (arg <= 0) {
+        return 0;
+      }
+
+      // Allocate memory for IV if needed
+      if (arg > EVP_MAX_IV_LENGTH && arg > gctx->ivlen) {
+        if (gctx->iv != c->iv) {
+          OPENSSL_free(gctx->iv);
+        }
+        gctx->iv = OPENSSL_malloc(arg);
+        if (!gctx->iv) {
+          return 0;
+        }
+      }
+      gctx->ivlen = arg;
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_TAG:
+      if (arg <= 0 || arg > 16 || c->encrypt) {
+        return 0;
+      }
+      OPENSSL_memcpy(c->buf, ptr, arg);
+      gctx->taglen = arg;
+      return 1;
+
+    case EVP_CTRL_AEAD_GET_TAG:
+      if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0) {
+        return 0;
+      }
+      OPENSSL_memcpy(ptr, c->buf, arg);
+      return 1;
+
+    case EVP_CTRL_AEAD_SET_IV_FIXED:
+      // Special case: -1 length restores whole IV
+      if (arg == -1) {
+        OPENSSL_memcpy(gctx->iv, ptr, gctx->ivlen);
+        gctx->iv_gen = 1;
+        return 1;
+      }
+      // Fixed field must be at least 4 bytes and invocation field
+      // at least 8.
+      if (arg < 4 || (gctx->ivlen - arg) < 8) {
+        return 0;
+      }
+      if (arg) {
+        OPENSSL_memcpy(gctx->iv, ptr, arg);
+      }
+      if (c->encrypt && !RAND_bytes(gctx->iv + arg, gctx->ivlen - arg)) {
+        return 0;
+      }
+      gctx->iv_gen = 1;
+      return 1;
+
+    case EVP_CTRL_GCM_IV_GEN:
+      if (gctx->iv_gen == 0 || gctx->key_set == 0) {
+        return 0;
+      }
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen);
+      if (arg <= 0 || arg > gctx->ivlen) {
+        arg = gctx->ivlen;
+      }
+      OPENSSL_memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
+      // Invocation field will be at least 8 bytes in size and
+      // so no need to check wrap around or increment more than
+      // last 8 bytes.
+      ctr64_inc(gctx->iv + gctx->ivlen - 8);
+      gctx->iv_set = 1;
+      return 1;
+
+    case EVP_CTRL_GCM_SET_IV_INV:
+      if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt) {
+        return 0;
+      }
+      OPENSSL_memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+      CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, gctx->iv, gctx->ivlen);
+      gctx->iv_set = 1;
+      return 1;
+
+    case EVP_CTRL_COPY: {
+      EVP_CIPHER_CTX *out = ptr;
+      EVP_AES_GCM_CTX *gctx_out = aes_gcm_from_cipher_ctx(out);
+      // |EVP_CIPHER_CTX_copy| copies this generically, but we must redo it in
+      // case |out->cipher_data| and |in->cipher_data| are differently aligned.
+      OPENSSL_memcpy(gctx_out, gctx, sizeof(EVP_AES_GCM_CTX));
+      if (gctx->iv == c->iv) {
+        gctx_out->iv = out->iv;
+      } else {
+        gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
+        if (!gctx_out->iv) {
+          return 0;
+        }
+        OPENSSL_memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
+      }
+      return 1;
+    }
+
+    default:
+      return -1;
+  }
+}
+
+static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  EVP_AES_GCM_CTX *gctx = aes_gcm_from_cipher_ctx(ctx);
+
+  // If not set up, return error
+  if (!gctx->key_set) {
+    return -1;
+  }
+  if (!gctx->iv_set) {
+    return -1;
+  }
+
+  if (in) {
+    if (out == NULL) {
+      if (!CRYPTO_gcm128_aad(&gctx->gcm, in, len)) {
+        return -1;
+      }
+    } else if (ctx->encrypt) {
+      if (gctx->ctr) {
+        if (!CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+                                         gctx->ctr)) {
+          return -1;
+        }
+      } else {
+        if (!CRYPTO_gcm128_encrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+          return -1;
+        }
+      }
+    } else {
+      if (gctx->ctr) {
+        if (!CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+                                         gctx->ctr)) {
+          return -1;
+        }
+      } else {
+        if (!CRYPTO_gcm128_decrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+          return -1;
+        }
+      }
+    }
+    return len;
+  } else {
+    if (!ctx->encrypt) {
+      if (gctx->taglen < 0 ||
+          !CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen)) {
+        return -1;
+      }
+      gctx->iv_set = 0;
+      return 0;
+    }
+    CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
+    gctx->taglen = 16;
+    // Don't reuse the IV
+    gctx->iv_set = 0;
+    return 0;
+  }
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_cbc;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ctr;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ecb;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ofb128;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_gcm;
+  out->block_size = 1;
+  out->key_len = 16;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_cbc;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ctr;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ecb;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ofb128;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_gcm;
+  out->block_size = 1;
+  out->key_len = 24;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_cbc_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_cbc;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ctr_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ctr;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_CTR_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ecb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ecb;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ofb_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ofb128;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_OFB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_gcm_generic) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_gcm;
+  out->block_size = 1;
+  out->key_len = 32;
+  out->iv_len = 12;
+  out->ctx_size = sizeof(EVP_AES_GCM_CTX) + EVP_AES_GCM_CTX_PADDING;
+  out->flags = EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_CUSTOM_COPY |
+               EVP_CIPH_FLAG_CUSTOM_CIPHER | EVP_CIPH_ALWAYS_CALL_INIT |
+               EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER;
+  out->init = aes_gcm_init_key;
+  out->cipher = aes_gcm_cipher;
+  out->cleanup = aes_gcm_cleanup;
+  out->ctrl = aes_gcm_ctrl;
+}
+
+#if defined(HWAES_ECB)
+
+static int aes_hw_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                             const uint8_t *in, size_t len) {
+  size_t bl = ctx->cipher->block_size;
+
+  if (len < bl) {
+    return 1;
+  }
+
+  aes_hw_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_128_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_128_ecb;
+  out->block_size = 16;
+  out->key_len = 16;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_192_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_192_ecb;
+  out->block_size = 16;
+  out->key_len = 24;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_hw_256_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+
+  out->nid = NID_aes_256_ecb;
+  out->block_size = 16;
+  out->key_len = 32;
+  out->ctx_size = sizeof(EVP_AES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = aes_init_key;
+  out->cipher = aes_hw_ecb_cipher;
+}
+
+#define EVP_ECB_CIPHER_FUNCTION(keybits)            \
+  const EVP_CIPHER *EVP_aes_##keybits##_ecb(void) { \
+    if (hwaes_capable()) {                          \
+      return aes_hw_##keybits##_ecb();              \
+    }                                               \
+    return aes_##keybits##_ecb_generic();           \
+  }
+
+#else
+
+#define EVP_ECB_CIPHER_FUNCTION(keybits)            \
+  const EVP_CIPHER *EVP_aes_##keybits##_ecb(void) { \
+    return aes_##keybits##_ecb_generic();           \
+  }
+
+#endif  // HWAES_ECB
+
+#define EVP_CIPHER_FUNCTION(keybits, mode)             \
+  const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \
+    return aes_##keybits##_##mode##_generic();         \
+  }
+
+EVP_CIPHER_FUNCTION(128, cbc)
+EVP_CIPHER_FUNCTION(128, ctr)
+EVP_CIPHER_FUNCTION(128, ofb)
+EVP_CIPHER_FUNCTION(128, gcm)
+
+EVP_CIPHER_FUNCTION(192, cbc)
+EVP_CIPHER_FUNCTION(192, ctr)
+EVP_CIPHER_FUNCTION(192, ofb)
+EVP_CIPHER_FUNCTION(192, gcm)
+
+EVP_CIPHER_FUNCTION(256, cbc)
+EVP_CIPHER_FUNCTION(256, ctr)
+EVP_CIPHER_FUNCTION(256, ofb)
+EVP_CIPHER_FUNCTION(256, gcm)
+
+EVP_ECB_CIPHER_FUNCTION(128)
+EVP_ECB_CIPHER_FUNCTION(192)
+EVP_ECB_CIPHER_FUNCTION(256)
+
+
+#define EVP_AEAD_AES_GCM_TAG_LEN 16
+
+struct aead_aes_gcm_ctx {
+  union {
+    double align;
+    AES_KEY ks;
+  } ks;
+  GCM128_KEY gcm_key;
+  ctr128_f ctr;
+};
+
+static int aead_aes_gcm_init_impl(struct aead_aes_gcm_ctx *gcm_ctx,
+                                  size_t *out_tag_len, const uint8_t *key,
+                                  size_t key_len, size_t tag_len) {
+  const size_t key_bits = key_len * 8;
+
+  if (key_bits != 128 && key_bits != 192 && key_bits != 256) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
+    return 0;  // EVP_AEAD_CTX_init should catch this.
+  }
+
+  if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
+    tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  }
+
+  if (tag_len > EVP_AEAD_AES_GCM_TAG_LEN) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
+    return 0;
+  }
+
+  gcm_ctx->ctr =
+      aes_ctr_set_key(&gcm_ctx->ks.ks, &gcm_ctx->gcm_key, NULL, key, key_len);
+  *out_tag_len = tag_len;
+  return 1;
+}
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                             size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static void aead_aes_gcm_cleanup(EVP_AEAD_CTX *ctx) {}
+
+static int aead_aes_gcm_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     uint8_t *out_tag, size_t *out_tag_len,
+                                     size_t max_out_tag_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *extra_in,
+                                     size_t extra_in_len,
+                                     const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+
+  if (extra_in_len + ctx->tag_len < ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+    return 0;
+  }
+  if (max_out_tag_len < extra_in_len + ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+  if (nonce_len == 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  const AES_KEY *key = &gcm_ctx->ks.ks;
+
+  GCM128_CONTEXT gcm;
+  OPENSSL_memset(&gcm, 0, sizeof(gcm));
+  OPENSSL_memcpy(&gcm.gcm_key, &gcm_ctx->gcm_key, sizeof(gcm.gcm_key));
+  CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len);
+
+  if (ad_len > 0 && !CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
+    return 0;
+  }
+
+  if (gcm_ctx->ctr) {
+    if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, in, out, in_len,
+                                     gcm_ctx->ctr)) {
+      return 0;
+    }
+  } else {
+    if (!CRYPTO_gcm128_encrypt(&gcm, key, in, out, in_len)) {
+      return 0;
+    }
+  }
+
+  if (extra_in_len) {
+    if (gcm_ctx->ctr) {
+      if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, extra_in, out_tag,
+                                       extra_in_len, gcm_ctx->ctr)) {
+        return 0;
+      }
+    } else {
+      if (!CRYPTO_gcm128_encrypt(&gcm, key, extra_in, out_tag, extra_in_len)) {
+        return 0;
+      }
+    }
+  }
+
+  CRYPTO_gcm128_tag(&gcm, out_tag + extra_in_len, ctx->tag_len);
+  *out_tag_len = ctx->tag_len + extra_in_len;
+
+  return 1;
+}
+
+static int aead_aes_gcm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                    const uint8_t *nonce, size_t nonce_len,
+                                    const uint8_t *in, size_t in_len,
+                                    const uint8_t *in_tag, size_t in_tag_len,
+                                    const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_ctx *gcm_ctx = (struct aead_aes_gcm_ctx *) &ctx->state;
+  uint8_t tag[EVP_AEAD_AES_GCM_TAG_LEN];
+
+  if (nonce_len == 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+    return 0;
+  }
+
+  if (in_tag_len != ctx->tag_len) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  const AES_KEY *key = &gcm_ctx->ks.ks;
+
+  GCM128_CONTEXT gcm;
+  OPENSSL_memset(&gcm, 0, sizeof(gcm));
+  OPENSSL_memcpy(&gcm.gcm_key, &gcm_ctx->gcm_key, sizeof(gcm.gcm_key));
+  CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len);
+
+  if (!CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
+    return 0;
+  }
+
+  if (gcm_ctx->ctr) {
+    if (!CRYPTO_gcm128_decrypt_ctr32(&gcm, key, in, out, in_len,
+                                     gcm_ctx->ctr)) {
+      return 0;
+    }
+  } else {
+    if (!CRYPTO_gcm128_decrypt(&gcm, key, in, out, in_len)) {
+      return 0;
+    }
+  }
+
+  CRYPTO_gcm128_tag(&gcm, tag, ctx->tag_len);
+  if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+    return 0;
+  }
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_192_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 24;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+struct aead_aes_gcm_tls12_ctx {
+  struct aead_aes_gcm_ctx gcm_ctx;
+  uint64_t min_next_nonce;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_tls12_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_tls12_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_tls12_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_tls12_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls12_ctx *) &ctx->state;
+
+  gcm_ctx->min_next_nonce = 0;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static int aead_aes_gcm_tls12_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_tls12_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls12_ctx *) &ctx->state;
+
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // The given nonces must be strictly monotonically increasing.
+  uint64_t given_counter;
+  OPENSSL_memcpy(&given_counter, nonce + nonce_len - sizeof(given_counter),
+                 sizeof(given_counter));
+  given_counter = CRYPTO_bswap8(given_counter);
+  if (given_counter == UINT64_MAX ||
+      given_counter < gcm_ctx->min_next_nonce) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE);
+    return 0;
+  }
+
+  gcm_ctx->min_next_nonce = given_counter + 1;
+
+  return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len,
+                                   max_out_tag_len, nonce, nonce_len, in,
+                                   in_len, extra_in, extra_in_len, ad, ad_len);
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls12) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls12_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls12) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls12_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+struct aead_aes_gcm_tls13_ctx {
+  struct aead_aes_gcm_ctx gcm_ctx;
+  uint64_t min_next_nonce;
+  uint64_t mask;
+  uint8_t first;
+};
+
+OPENSSL_STATIC_ASSERT(sizeof(((EVP_AEAD_CTX *)NULL)->state) >=
+                          sizeof(struct aead_aes_gcm_tls13_ctx),
+                      "AEAD state is too small");
+#if defined(__GNUC__) || defined(__clang__)
+OPENSSL_STATIC_ASSERT(alignof(union evp_aead_ctx_st_state) >=
+                          alignof(struct aead_aes_gcm_tls13_ctx),
+                      "AEAD state has insufficient alignment");
+#endif
+
+static int aead_aes_gcm_tls13_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+                                   size_t key_len, size_t requested_tag_len) {
+  struct aead_aes_gcm_tls13_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls13_ctx *) &ctx->state;
+
+  gcm_ctx->min_next_nonce = 0;
+  gcm_ctx->first = 1;
+
+  size_t actual_tag_len;
+  if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len,
+                              requested_tag_len)) {
+    return 0;
+  }
+
+  ctx->tag_len = actual_tag_len;
+  return 1;
+}
+
+static int aead_aes_gcm_tls13_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+    size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+    size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+  struct aead_aes_gcm_tls13_ctx *gcm_ctx =
+      (struct aead_aes_gcm_tls13_ctx *) &ctx->state;
+
+  if (nonce_len != 12) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+    return 0;
+  }
+
+  // The given nonces must be strictly monotonically increasing. See
+  // https://tools.ietf.org/html/rfc8446#section-5.3 for details of the TLS 1.3
+  // nonce construction.
+  uint64_t given_counter;
+  OPENSSL_memcpy(&given_counter, nonce + nonce_len - sizeof(given_counter),
+                 sizeof(given_counter));
+  given_counter = CRYPTO_bswap8(given_counter);
+
+  if (gcm_ctx->first) {
+    // In the first call the sequence number will be zero and therefore the
+    // given nonce will be 0 ^ mask = mask.
+    gcm_ctx->mask = given_counter;
+    gcm_ctx->first = 0;
+  }
+  given_counter ^= gcm_ctx->mask;
+
+  if (given_counter == UINT64_MAX ||
+      given_counter < gcm_ctx->min_next_nonce) {
+    OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE);
+    return 0;
+  }
+
+  gcm_ctx->min_next_nonce = given_counter + 1;
+
+  return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len,
+                                   max_out_tag_len, nonce, nonce_len, in,
+                                   in_len, extra_in, extra_in_len, ad, ad_len);
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls13) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 16;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls13_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls13_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls13) {
+  memset(out, 0, sizeof(EVP_AEAD));
+
+  out->key_len = 32;
+  out->nonce_len = 12;
+  out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+  out->seal_scatter_supports_extra_in = 1;
+
+  out->init = aead_aes_gcm_tls13_init;
+  out->cleanup = aead_aes_gcm_cleanup;
+  out->seal_scatter = aead_aes_gcm_tls13_seal_scatter;
+  out->open_gather = aead_aes_gcm_open_gather;
+}
+
+int EVP_has_aes_hardware(void) {
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+  return hwaes_capable() && crypto_gcm_clmul_enabled();
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+  return hwaes_capable() && CRYPTO_is_ARMv8_PMULL_capable();
+#elif defined(OPENSSL_PPC64LE)
+  return CRYPTO_is_PPC64LE_vcrypto_capable();
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_MSVC_PRAGMA(warning(pop))
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c
new file mode 100644
index 0000000..2aaefbc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c	
@@ -0,0 +1,237 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/des.h>
+#include <openssl_grpc/nid.h>
+
+#include "internal.h"
+#include "../delocate.h"
+
+
+typedef struct {
+  union {
+    double align;
+    DES_key_schedule ks;
+  } ks;
+} EVP_DES_KEY;
+
+static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *)key;
+  EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
+
+  DES_set_key(deskey, &dat->ks.ks);
+  return 1;
+}
+
+static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t in_len) {
+  EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
+
+  DES_ncbc_encrypt(in, out, in_len, &dat->ks.ks, (DES_cblock *)ctx->iv,
+                   ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_cbc;
+  out->block_size = 8;
+  out->key_len = 8;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(EVP_DES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_init_key;
+  out->cipher = des_cbc_cipher;
+}
+
+static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t in_len) {
+  if (in_len < ctx->cipher->block_size) {
+    return 1;
+  }
+  in_len -= ctx->cipher->block_size;
+
+  EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;
+  for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
+    DES_ecb_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
+                    &dat->ks.ks, ctx->encrypt);
+  }
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ecb;
+  out->block_size = 8;
+  out->key_len = 8;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(EVP_DES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_init_key;
+  out->cipher = des_ecb_cipher;
+}
+
+typedef struct {
+  union {
+    double align;
+    DES_key_schedule ks[3];
+  } ks;
+} DES_EDE_KEY;
+
+static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                             const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *)key;
+  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
+
+  DES_set_key(&deskey[0], &dat->ks.ks[0]);
+  DES_set_key(&deskey[1], &dat->ks.ks[1]);
+  DES_set_key(&deskey[2], &dat->ks.ks[2]);
+
+  return 1;
+}
+
+static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len) {
+  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
+
+  DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
+                       &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede3_cbc;
+  out->block_size = 8;
+  out->key_len = 24;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_ede3_init_key;
+  out->cipher = des_ede3_cbc_cipher;
+}
+
+static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                             const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *) key;
+  DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
+
+  DES_set_key(&deskey[0], &dat->ks.ks[0]);
+  DES_set_key(&deskey[1], &dat->ks.ks[1]);
+  DES_set_key(&deskey[0], &dat->ks.ks[2]);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede_cbc;
+  out->block_size = 8;
+  out->key_len = 16;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_ede_init_key;
+  out->cipher = des_ede3_cbc_cipher;
+}
+
+static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len) {
+  if (in_len < ctx->cipher->block_size) {
+    return 1;
+  }
+  in_len -= ctx->cipher->block_size;
+
+  DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
+  for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
+    DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
+                     &dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
+                     ctx->encrypt);
+  }
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede_ecb;
+  out->block_size = 8;
+  out->key_len = 16;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_ede_init_key;
+  out->cipher = des_ede_ecb_cipher;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede3_ecb;
+  out->block_size = 8;
+  out->key_len = 24;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_ede3_init_key;
+  out->cipher = des_ede_ecb_cipher;
+}
+
+const EVP_CIPHER* EVP_des_ede3_ecb(void) {
+  return EVP_des_ede3();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c.grpc_back
new file mode 100644
index 0000000..e77363b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/e_des.c.grpc_back	
@@ -0,0 +1,237 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/cipher.h>
+#include <openssl/des.h>
+#include <openssl/nid.h>
+
+#include "internal.h"
+#include "../delocate.h"
+
+
+typedef struct {
+  union {
+    double align;
+    DES_key_schedule ks;
+  } ks;
+} EVP_DES_KEY;
+
+static int des_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                        const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *)key;
+  EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
+
+  DES_set_key(deskey, &dat->ks.ks);
+  return 1;
+}
+
+static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t in_len) {
+  EVP_DES_KEY *dat = (EVP_DES_KEY *)ctx->cipher_data;
+
+  DES_ncbc_encrypt(in, out, in_len, &dat->ks.ks, (DES_cblock *)ctx->iv,
+                   ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_cbc;
+  out->block_size = 8;
+  out->key_len = 8;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(EVP_DES_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_init_key;
+  out->cipher = des_cbc_cipher;
+}
+
+static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                          size_t in_len) {
+  if (in_len < ctx->cipher->block_size) {
+    return 1;
+  }
+  in_len -= ctx->cipher->block_size;
+
+  EVP_DES_KEY *dat = (EVP_DES_KEY *) ctx->cipher_data;
+  for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
+    DES_ecb_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
+                    &dat->ks.ks, ctx->encrypt);
+  }
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ecb) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ecb;
+  out->block_size = 8;
+  out->key_len = 8;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(EVP_DES_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_init_key;
+  out->cipher = des_ecb_cipher;
+}
+
+typedef struct {
+  union {
+    double align;
+    DES_key_schedule ks[3];
+  } ks;
+} DES_EDE_KEY;
+
+static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                             const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *)key;
+  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
+
+  DES_set_key(&deskey[0], &dat->ks.ks[0]);
+  DES_set_key(&deskey[1], &dat->ks.ks[1]);
+  DES_set_key(&deskey[2], &dat->ks.ks[2]);
+
+  return 1;
+}
+
+static int des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len) {
+  DES_EDE_KEY *dat = (DES_EDE_KEY*) ctx->cipher_data;
+
+  DES_ede3_cbc_encrypt(in, out, in_len, &dat->ks.ks[0], &dat->ks.ks[1],
+                       &dat->ks.ks[2], (DES_cblock *)ctx->iv, ctx->encrypt);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede3_cbc;
+  out->block_size = 8;
+  out->key_len = 24;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_ede3_init_key;
+  out->cipher = des_ede3_cbc_cipher;
+}
+
+static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
+                             const uint8_t *iv, int enc) {
+  DES_cblock *deskey = (DES_cblock *) key;
+  DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
+
+  DES_set_key(&deskey[0], &dat->ks.ks[0]);
+  DES_set_key(&deskey[1], &dat->ks.ks[1]);
+  DES_set_key(&deskey[0], &dat->ks.ks[2]);
+
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede_cbc) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede_cbc;
+  out->block_size = 8;
+  out->key_len = 16;
+  out->iv_len = 8;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_CBC_MODE;
+  out->init = des_ede_init_key;
+  out->cipher = des_ede3_cbc_cipher;
+}
+
+static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len) {
+  if (in_len < ctx->cipher->block_size) {
+    return 1;
+  }
+  in_len -= ctx->cipher->block_size;
+
+  DES_EDE_KEY *dat = (DES_EDE_KEY *) ctx->cipher_data;
+  for (size_t i = 0; i <= in_len; i += ctx->cipher->block_size) {
+    DES_ecb3_encrypt((DES_cblock *) (in + i), (DES_cblock *) (out + i),
+                     &dat->ks.ks[0], &dat->ks.ks[1], &dat->ks.ks[2],
+                     ctx->encrypt);
+  }
+  return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede_ecb;
+  out->block_size = 8;
+  out->key_len = 16;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_ede_init_key;
+  out->cipher = des_ede_ecb_cipher;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_CIPHER, EVP_des_ede3) {
+  memset(out, 0, sizeof(EVP_CIPHER));
+  out->nid = NID_des_ede3_ecb;
+  out->block_size = 8;
+  out->key_len = 24;
+  out->iv_len = 0;
+  out->ctx_size = sizeof(DES_EDE_KEY);
+  out->flags = EVP_CIPH_ECB_MODE;
+  out->init = des_ede3_init_key;
+  out->cipher = des_ede_ecb_cipher;
+}
+
+const EVP_CIPHER* EVP_des_ede3_ecb(void) {
+  return EVP_des_ede3();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h
new file mode 100644
index 0000000..6d0160e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_INTERNAL_H
+#define OPENSSL_HEADER_CIPHER_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/aes.h>
+
+#include "../../internal.h"
+#include "../modes/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP_CIPH_MODE_MASK contains the bits of |flags| that represent the mode.
+#define EVP_CIPH_MODE_MASK 0x3f
+
+// EVP_AEAD represents a specific AEAD algorithm.
+struct evp_aead_st {
+  uint8_t key_len;
+  uint8_t nonce_len;
+  uint8_t overhead;
+  uint8_t max_tag_len;
+  int seal_scatter_supports_extra_in;
+
+  // init initialises an |EVP_AEAD_CTX|. If this call returns zero then
+  // |cleanup| will not be called for that context.
+  int (*init)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+              size_t tag_len);
+  int (*init_with_direction)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+                             size_t tag_len, enum evp_aead_direction_t dir);
+  void (*cleanup)(EVP_AEAD_CTX *);
+
+  int (*open)(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+              size_t max_out_len, const uint8_t *nonce, size_t nonce_len,
+              const uint8_t *in, size_t in_len, const uint8_t *ad,
+              size_t ad_len);
+
+  int (*seal_scatter)(const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+                      size_t *out_tag_len, size_t max_out_tag_len,
+                      const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+                      size_t in_len, const uint8_t *extra_in,
+                      size_t extra_in_len, const uint8_t *ad, size_t ad_len);
+
+  int (*open_gather)(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                     const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+                     size_t in_len, const uint8_t *in_tag, size_t in_tag_len,
+                     const uint8_t *ad, size_t ad_len);
+
+  int (*get_iv)(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                size_t *out_len);
+
+  size_t (*tag_len)(const EVP_AEAD_CTX *ctx, size_t in_Len,
+                    size_t extra_in_len);
+};
+
+// aes_ctr_set_key initialises |*aes_key| using |key_bytes| bytes from |key|,
+// where |key_bytes| must either be 16, 24 or 32. If not NULL, |*out_block| is
+// set to a function that encrypts single blocks. If not NULL, |*gcm_key| is
+// initialised to do GHASH with the given key. It returns a function for
+// optimised CTR-mode, or NULL if CTR-mode should be built using |*out_block|.
+ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_KEY *gcm_key,
+                         block128_f *out_block, const uint8_t *key,
+                         size_t key_bytes);
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CIPHER_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h.grpc_back
new file mode 100644
index 0000000..68efe33
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/cipher/internal.h.grpc_back	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_INTERNAL_H
+#define OPENSSL_HEADER_CIPHER_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/aead.h>
+#include <openssl/aes.h>
+
+#include "../../internal.h"
+#include "../modes/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP_CIPH_MODE_MASK contains the bits of |flags| that represent the mode.
+#define EVP_CIPH_MODE_MASK 0x3f
+
+// EVP_AEAD represents a specific AEAD algorithm.
+struct evp_aead_st {
+  uint8_t key_len;
+  uint8_t nonce_len;
+  uint8_t overhead;
+  uint8_t max_tag_len;
+  int seal_scatter_supports_extra_in;
+
+  // init initialises an |EVP_AEAD_CTX|. If this call returns zero then
+  // |cleanup| will not be called for that context.
+  int (*init)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+              size_t tag_len);
+  int (*init_with_direction)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len,
+                             size_t tag_len, enum evp_aead_direction_t dir);
+  void (*cleanup)(EVP_AEAD_CTX *);
+
+  int (*open)(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len,
+              size_t max_out_len, const uint8_t *nonce, size_t nonce_len,
+              const uint8_t *in, size_t in_len, const uint8_t *ad,
+              size_t ad_len);
+
+  int (*seal_scatter)(const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+                      size_t *out_tag_len, size_t max_out_tag_len,
+                      const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+                      size_t in_len, const uint8_t *extra_in,
+                      size_t extra_in_len, const uint8_t *ad, size_t ad_len);
+
+  int (*open_gather)(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                     const uint8_t *nonce, size_t nonce_len, const uint8_t *in,
+                     size_t in_len, const uint8_t *in_tag, size_t in_tag_len,
+                     const uint8_t *ad, size_t ad_len);
+
+  int (*get_iv)(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv,
+                size_t *out_len);
+
+  size_t (*tag_len)(const EVP_AEAD_CTX *ctx, size_t in_Len,
+                    size_t extra_in_len);
+};
+
+// aes_ctr_set_key initialises |*aes_key| using |key_bytes| bytes from |key|,
+// where |key_bytes| must either be 16, 24 or 32. If not NULL, |*out_block| is
+// set to a function that encrypts single blocks. If not NULL, |*gcm_key| is
+// initialised to do GHASH with the given key. It returns a function for
+// optimised CTR-mode, or NULL if CTR-mode should be built using |*out_block|.
+ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_KEY *gcm_key,
+                         block128_f *out_block, const uint8_t *key,
+                         size_t key_bytes);
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CIPHER_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h
new file mode 100644
index 0000000..06f3c48
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h	
@@ -0,0 +1,89 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
+#define OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
+
+#include <openssl_grpc/base.h>
+
+#include "../internal.h"
+
+
+#if !defined(BORINGSSL_SHARED_LIBRARY) && defined(BORINGSSL_FIPS) && \
+    !defined(OPENSSL_ASAN) && !defined(OPENSSL_MSAN)
+#define DEFINE_BSS_GET(type, name)        \
+  static type name __attribute__((used)); \
+  type *name##_bss_get(void) __attribute__((const));
+// For FIPS builds we require that CRYPTO_ONCE_INIT be zero.
+#define DEFINE_STATIC_ONCE(name) DEFINE_BSS_GET(CRYPTO_once_t, name)
+// For FIPS builds we require that CRYPTO_STATIC_MUTEX_INIT be zero.
+#define DEFINE_STATIC_MUTEX(name) \
+  DEFINE_BSS_GET(struct CRYPTO_STATIC_MUTEX, name)
+// For FIPS builds we require that CRYPTO_EX_DATA_CLASS_INIT be zero.
+#define DEFINE_STATIC_EX_DATA_CLASS(name) \
+  DEFINE_BSS_GET(CRYPTO_EX_DATA_CLASS, name)
+#else
+#define DEFINE_BSS_GET(type, name) \
+  static type name;                \
+  static type *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_ONCE(name)                \
+  static CRYPTO_once_t name = CRYPTO_ONCE_INIT; \
+  static CRYPTO_once_t *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_MUTEX(name)                                    \
+  static struct CRYPTO_STATIC_MUTEX name = CRYPTO_STATIC_MUTEX_INIT; \
+  static struct CRYPTO_STATIC_MUTEX *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_EX_DATA_CLASS(name)                       \
+  static CRYPTO_EX_DATA_CLASS name = CRYPTO_EX_DATA_CLASS_INIT; \
+  static CRYPTO_EX_DATA_CLASS *name##_bss_get(void) { return &name; }
+#endif
+
+#define DEFINE_DATA(type, name, accessor_decorations)                         \
+  DEFINE_BSS_GET(type, name##_storage)                                        \
+  DEFINE_STATIC_ONCE(name##_once)                                             \
+  static void name##_do_init(type *out);                                      \
+  static void name##_init(void) { name##_do_init(name##_storage_bss_get()); } \
+  accessor_decorations type *name(void) {                                     \
+    CRYPTO_once(name##_once_bss_get(), name##_init);                          \
+    /* See http://c-faq.com/ansi/constmismatch.html for why the following     \
+     * cast is needed. */                                                     \
+    return (const type *)name##_storage_bss_get();                            \
+  }                                                                           \
+  static void name##_do_init(type *out)
+
+// DEFINE_METHOD_FUNCTION defines a function named |name| which returns a
+// method table of type const |type|*. In FIPS mode, to avoid rel.ro data, it
+// is split into a CRYPTO_once_t-guarded initializer in the module and
+// unhashed, non-module accessor functions to space reserved in the BSS. The
+// method table is initialized by a caller-supplied function which takes a
+// parameter named |out| of type |type|*. The caller should follow the macro
+// invocation with the body of this function:
+//
+//     DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md4) {
+//       out->type = NID_md4;
+//       out->md_size = MD4_DIGEST_LENGTH;
+//       out->flags = 0;
+//       out->init = md4_init;
+//       out->update = md4_update;
+//       out->final = md4_final;
+//       out->block_size = 64;
+//       out->ctx_size = sizeof(MD4_CTX);
+//     }
+//
+// This mechanism does not use a static initializer because their execution
+// order is undefined. See FIPS.md for more details.
+#define DEFINE_METHOD_FUNCTION(type, name) DEFINE_DATA(type, name, const)
+
+#define DEFINE_LOCAL_DATA(type, name) DEFINE_DATA(type, name, static const)
+
+#endif  // OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h.grpc_back
new file mode 100644
index 0000000..d6564e4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/delocate.h.grpc_back	
@@ -0,0 +1,89 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
+#define OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
+
+#include <openssl/base.h>
+
+#include "../internal.h"
+
+
+#if !defined(BORINGSSL_SHARED_LIBRARY) && defined(BORINGSSL_FIPS) && \
+    !defined(OPENSSL_ASAN) && !defined(OPENSSL_MSAN)
+#define DEFINE_BSS_GET(type, name)        \
+  static type name __attribute__((used)); \
+  type *name##_bss_get(void) __attribute__((const));
+// For FIPS builds we require that CRYPTO_ONCE_INIT be zero.
+#define DEFINE_STATIC_ONCE(name) DEFINE_BSS_GET(CRYPTO_once_t, name)
+// For FIPS builds we require that CRYPTO_STATIC_MUTEX_INIT be zero.
+#define DEFINE_STATIC_MUTEX(name) \
+  DEFINE_BSS_GET(struct CRYPTO_STATIC_MUTEX, name)
+// For FIPS builds we require that CRYPTO_EX_DATA_CLASS_INIT be zero.
+#define DEFINE_STATIC_EX_DATA_CLASS(name) \
+  DEFINE_BSS_GET(CRYPTO_EX_DATA_CLASS, name)
+#else
+#define DEFINE_BSS_GET(type, name) \
+  static type name;                \
+  static type *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_ONCE(name)                \
+  static CRYPTO_once_t name = CRYPTO_ONCE_INIT; \
+  static CRYPTO_once_t *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_MUTEX(name)                                    \
+  static struct CRYPTO_STATIC_MUTEX name = CRYPTO_STATIC_MUTEX_INIT; \
+  static struct CRYPTO_STATIC_MUTEX *name##_bss_get(void) { return &name; }
+#define DEFINE_STATIC_EX_DATA_CLASS(name)                       \
+  static CRYPTO_EX_DATA_CLASS name = CRYPTO_EX_DATA_CLASS_INIT; \
+  static CRYPTO_EX_DATA_CLASS *name##_bss_get(void) { return &name; }
+#endif
+
+#define DEFINE_DATA(type, name, accessor_decorations)                         \
+  DEFINE_BSS_GET(type, name##_storage)                                        \
+  DEFINE_STATIC_ONCE(name##_once)                                             \
+  static void name##_do_init(type *out);                                      \
+  static void name##_init(void) { name##_do_init(name##_storage_bss_get()); } \
+  accessor_decorations type *name(void) {                                     \
+    CRYPTO_once(name##_once_bss_get(), name##_init);                          \
+    /* See http://c-faq.com/ansi/constmismatch.html for why the following     \
+     * cast is needed. */                                                     \
+    return (const type *)name##_storage_bss_get();                            \
+  }                                                                           \
+  static void name##_do_init(type *out)
+
+// DEFINE_METHOD_FUNCTION defines a function named |name| which returns a
+// method table of type const |type|*. In FIPS mode, to avoid rel.ro data, it
+// is split into a CRYPTO_once_t-guarded initializer in the module and
+// unhashed, non-module accessor functions to space reserved in the BSS. The
+// method table is initialized by a caller-supplied function which takes a
+// parameter named |out| of type |type|*. The caller should follow the macro
+// invocation with the body of this function:
+//
+//     DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md4) {
+//       out->type = NID_md4;
+//       out->md_size = MD4_DIGEST_LENGTH;
+//       out->flags = 0;
+//       out->init = md4_init;
+//       out->update = md4_update;
+//       out->final = md4_final;
+//       out->block_size = 64;
+//       out->ctx_size = sizeof(MD4_CTX);
+//     }
+//
+// This mechanism does not use a static initializer because their execution
+// order is undefined. See FIPS.md for more details.
+#define DEFINE_METHOD_FUNCTION(type, name) DEFINE_DATA(type, name, const)
+
+#define DEFINE_LOCAL_DATA(type, name) DEFINE_DATA(type, name, static const)
+
+#endif  // OPENSSL_HEADER_FIPSMODULE_DELOCATE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c
new file mode 100644
index 0000000..359fcf0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c	
@@ -0,0 +1,785 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/des.h>
+
+#include <stdlib.h>
+
+#include "internal.h"
+
+
+static const uint32_t des_skb[8][64] = {
+    {  // for C bits (numbered as per FIPS 46) 1 2 3 4 5 6
+     0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L, 0x00010000L,
+     0x00010010L, 0x20010000L, 0x20010010L, 0x00000800L, 0x00000810L,
+     0x20000800L, 0x20000810L, 0x00010800L, 0x00010810L, 0x20010800L,
+     0x20010810L, 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L,
+     0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L, 0x00000820L,
+     0x00000830L, 0x20000820L, 0x20000830L, 0x00010820L, 0x00010830L,
+     0x20010820L, 0x20010830L, 0x00080000L, 0x00080010L, 0x20080000L,
+     0x20080010L, 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L,
+     0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L, 0x00090800L,
+     0x00090810L, 0x20090800L, 0x20090810L, 0x00080020L, 0x00080030L,
+     0x20080020L, 0x20080030L, 0x00090020L, 0x00090030L, 0x20090020L,
+     0x20090030L, 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L,
+     0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L, },
+    {  // for C bits (numbered as per FIPS 46) 7 8 10 11 12 13
+     0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L, 0x00200000L,
+     0x02200000L, 0x00202000L, 0x02202000L, 0x00000004L, 0x02000004L,
+     0x00002004L, 0x02002004L, 0x00200004L, 0x02200004L, 0x00202004L,
+     0x02202004L, 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L,
+     0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L, 0x00000404L,
+     0x02000404L, 0x00002404L, 0x02002404L, 0x00200404L, 0x02200404L,
+     0x00202404L, 0x02202404L, 0x10000000L, 0x12000000L, 0x10002000L,
+     0x12002000L, 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L,
+     0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L, 0x10200004L,
+     0x12200004L, 0x10202004L, 0x12202004L, 0x10000400L, 0x12000400L,
+     0x10002400L, 0x12002400L, 0x10200400L, 0x12200400L, 0x10202400L,
+     0x12202400L, 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L,
+     0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L, },
+    {  // for C bits (numbered as per FIPS 46) 14 15 16 17 19 20
+     0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L, 0x01000000L,
+     0x01000001L, 0x01040000L, 0x01040001L, 0x00000002L, 0x00000003L,
+     0x00040002L, 0x00040003L, 0x01000002L, 0x01000003L, 0x01040002L,
+     0x01040003L, 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L,
+     0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L, 0x00000202L,
+     0x00000203L, 0x00040202L, 0x00040203L, 0x01000202L, 0x01000203L,
+     0x01040202L, 0x01040203L, 0x08000000L, 0x08000001L, 0x08040000L,
+     0x08040001L, 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L,
+     0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L, 0x09000002L,
+     0x09000003L, 0x09040002L, 0x09040003L, 0x08000200L, 0x08000201L,
+     0x08040200L, 0x08040201L, 0x09000200L, 0x09000201L, 0x09040200L,
+     0x09040201L, 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L,
+     0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L, },
+    {  // for C bits (numbered as per FIPS 46) 21 23 24 26 27 28
+     0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L, 0x00000008L,
+     0x00100008L, 0x00000108L, 0x00100108L, 0x00001000L, 0x00101000L,
+     0x00001100L, 0x00101100L, 0x00001008L, 0x00101008L, 0x00001108L,
+     0x00101108L, 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L,
+     0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L, 0x04001000L,
+     0x04101000L, 0x04001100L, 0x04101100L, 0x04001008L, 0x04101008L,
+     0x04001108L, 0x04101108L, 0x00020000L, 0x00120000L, 0x00020100L,
+     0x00120100L, 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L,
+     0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L, 0x00021008L,
+     0x00121008L, 0x00021108L, 0x00121108L, 0x04020000L, 0x04120000L,
+     0x04020100L, 0x04120100L, 0x04020008L, 0x04120008L, 0x04020108L,
+     0x04120108L, 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L,
+     0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L, },
+    {  // for D bits (numbered as per FIPS 46) 1 2 3 4 5 6
+     0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L, 0x00000004L,
+     0x10000004L, 0x00010004L, 0x10010004L, 0x20000000L, 0x30000000L,
+     0x20010000L, 0x30010000L, 0x20000004L, 0x30000004L, 0x20010004L,
+     0x30010004L, 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L,
+     0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L, 0x20100000L,
+     0x30100000L, 0x20110000L, 0x30110000L, 0x20100004L, 0x30100004L,
+     0x20110004L, 0x30110004L, 0x00001000L, 0x10001000L, 0x00011000L,
+     0x10011000L, 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L,
+     0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L, 0x20001004L,
+     0x30001004L, 0x20011004L, 0x30011004L, 0x00101000L, 0x10101000L,
+     0x00111000L, 0x10111000L, 0x00101004L, 0x10101004L, 0x00111004L,
+     0x10111004L, 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L,
+     0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L, },
+    {  // for D bits (numbered as per FIPS 46) 8 9 11 12 13 14
+     0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L, 0x00000400L,
+     0x08000400L, 0x00000408L, 0x08000408L, 0x00020000L, 0x08020000L,
+     0x00020008L, 0x08020008L, 0x00020400L, 0x08020400L, 0x00020408L,
+     0x08020408L, 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L,
+     0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L, 0x00020001L,
+     0x08020001L, 0x00020009L, 0x08020009L, 0x00020401L, 0x08020401L,
+     0x00020409L, 0x08020409L, 0x02000000L, 0x0A000000L, 0x02000008L,
+     0x0A000008L, 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L,
+     0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L, 0x02020400L,
+     0x0A020400L, 0x02020408L, 0x0A020408L, 0x02000001L, 0x0A000001L,
+     0x02000009L, 0x0A000009L, 0x02000401L, 0x0A000401L, 0x02000409L,
+     0x0A000409L, 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L,
+     0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L, },
+    {  // for D bits (numbered as per FIPS 46) 16 17 18 19 20 21
+     0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L, 0x01000000L,
+     0x01000100L, 0x01080000L, 0x01080100L, 0x00000010L, 0x00000110L,
+     0x00080010L, 0x00080110L, 0x01000010L, 0x01000110L, 0x01080010L,
+     0x01080110L, 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L,
+     0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L, 0x00200010L,
+     0x00200110L, 0x00280010L, 0x00280110L, 0x01200010L, 0x01200110L,
+     0x01280010L, 0x01280110L, 0x00000200L, 0x00000300L, 0x00080200L,
+     0x00080300L, 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L,
+     0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L, 0x01000210L,
+     0x01000310L, 0x01080210L, 0x01080310L, 0x00200200L, 0x00200300L,
+     0x00280200L, 0x00280300L, 0x01200200L, 0x01200300L, 0x01280200L,
+     0x01280300L, 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L,
+     0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L, },
+    {  // for D bits (numbered as per FIPS 46) 22 23 24 25 27 28
+     0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L, 0x00000002L,
+     0x04000002L, 0x00040002L, 0x04040002L, 0x00002000L, 0x04002000L,
+     0x00042000L, 0x04042000L, 0x00002002L, 0x04002002L, 0x00042002L,
+     0x04042002L, 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L,
+     0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L, 0x00002020L,
+     0x04002020L, 0x00042020L, 0x04042020L, 0x00002022L, 0x04002022L,
+     0x00042022L, 0x04042022L, 0x00000800L, 0x04000800L, 0x00040800L,
+     0x04040800L, 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L,
+     0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L, 0x00002802L,
+     0x04002802L, 0x00042802L, 0x04042802L, 0x00000820L, 0x04000820L,
+     0x00040820L, 0x04040820L, 0x00000822L, 0x04000822L, 0x00040822L,
+     0x04040822L, 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L,
+     0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L, }};
+
+static const uint32_t DES_SPtrans[8][64] = {
+    {  // nibble 0
+     0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 0x02000000L,
+     0x00080802L, 0x00080002L, 0x02000002L, 0x00080802L, 0x02080800L,
+     0x02080000L, 0x00000802L, 0x02000802L, 0x02000000L, 0x00000000L,
+     0x00080002L, 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
+     0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 0x00000002L,
+     0x00000800L, 0x00080800L, 0x02080002L, 0x00000800L, 0x02000802L,
+     0x02080002L, 0x00000000L, 0x00000000L, 0x02080802L, 0x02000800L,
+     0x00080002L, 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
+     0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 0x00080802L,
+     0x00000002L, 0x02000002L, 0x02080000L, 0x02080802L, 0x00080800L,
+     0x02080000L, 0x02000802L, 0x02000000L, 0x00000802L, 0x00080002L,
+     0x00000000L, 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
+     0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, },
+    {  // nibble 1
+     0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 0x40000010L,
+     0x00008010L, 0x40008000L, 0x00108000L, 0x00008000L, 0x40100010L,
+     0x00000010L, 0x40008000L, 0x00100010L, 0x40108000L, 0x40100000L,
+     0x00000010L, 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
+     0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 0x40008010L,
+     0x00108010L, 0x40108000L, 0x40000010L, 0x40000000L, 0x00100000L,
+     0x00008010L, 0x40108010L, 0x00100010L, 0x40108000L, 0x40008000L,
+     0x00108010L, 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
+     0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 0x00008000L,
+     0x40000000L, 0x00108010L, 0x40008010L, 0x40108000L, 0x00008000L,
+     0x00000000L, 0x40000010L, 0x00000010L, 0x40108010L, 0x00108000L,
+     0x40100000L, 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
+     0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, },
+    {  // nibble 2
+     0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 0x00040001L,
+     0x04000000L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00040000L,
+     0x04040000L, 0x00000001L, 0x04040101L, 0x00000101L, 0x00000001L,
+     0x04040001L, 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
+     0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 0x04040001L,
+     0x04000100L, 0x00040101L, 0x04040000L, 0x00040100L, 0x00000000L,
+     0x04000000L, 0x00040101L, 0x04040100L, 0x00000100L, 0x00000001L,
+     0x00040000L, 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
+     0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 0x00040001L,
+     0x04000000L, 0x04040101L, 0x00000001L, 0x00040101L, 0x04000001L,
+     0x04000000L, 0x04040101L, 0x00040000L, 0x04000100L, 0x04000101L,
+     0x00040100L, 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
+     0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, },
+    {  // nibble 3
+     0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 0x00000000L,
+     0x10400000L, 0x10001008L, 0x00400008L, 0x10401000L, 0x10000008L,
+     0x10000000L, 0x00001008L, 0x10000008L, 0x00401008L, 0x00400000L,
+     0x10000000L, 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
+     0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 0x00001008L,
+     0x00000000L, 0x00400008L, 0x10401000L, 0x10001000L, 0x10400008L,
+     0x10401008L, 0x00400000L, 0x10400008L, 0x00001008L, 0x00400000L,
+     0x10000008L, 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
+     0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 0x00000000L,
+     0x10400008L, 0x10401000L, 0x00001000L, 0x10000000L, 0x10401008L,
+     0x00401008L, 0x00400000L, 0x10401008L, 0x00000008L, 0x10001000L,
+     0x00401008L, 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
+     0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, },
+    {  // nibble 4
+     0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 0x08010020L,
+     0x08000400L, 0x00010420L, 0x08010000L, 0x00010000L, 0x00000020L,
+     0x08000020L, 0x00010400L, 0x08000420L, 0x08010020L, 0x08010400L,
+     0x00000000L, 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
+     0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 0x00000020L,
+     0x08000420L, 0x08010420L, 0x00010020L, 0x08010000L, 0x00000400L,
+     0x00000420L, 0x08010400L, 0x08010400L, 0x08000420L, 0x00010020L,
+     0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
+     0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 0x00010420L,
+     0x08000000L, 0x00000400L, 0x00010020L, 0x08000420L, 0x00000400L,
+     0x00000000L, 0x08010420L, 0x08010020L, 0x08010400L, 0x00000420L,
+     0x00010000L, 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
+     0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, },
+    {  // nibble 5
+     0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 0x00200040L,
+     0x00002000L, 0x80002040L, 0x00200000L, 0x00002040L, 0x80202040L,
+     0x00202000L, 0x80000000L, 0x80002000L, 0x80000040L, 0x80200000L,
+     0x00202040L, 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
+     0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 0x80202040L,
+     0x80200000L, 0x80000000L, 0x00002040L, 0x00000040L, 0x00202000L,
+     0x00202040L, 0x80002000L, 0x00002040L, 0x80000000L, 0x80002000L,
+     0x00202040L, 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
+     0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 0x00200040L,
+     0x80202040L, 0x00202000L, 0x00000040L, 0x80202040L, 0x00202000L,
+     0x00200000L, 0x80002040L, 0x80000040L, 0x80200000L, 0x00202040L,
+     0x00000000L, 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
+     0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, },
+    {  // nibble 6
+     0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 0x01004204L,
+     0x00004004L, 0x00004200L, 0x00000000L, 0x01000000L, 0x01000204L,
+     0x00000204L, 0x01004000L, 0x00000004L, 0x01004200L, 0x01004000L,
+     0x00000204L, 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
+     0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 0x01004004L,
+     0x00004204L, 0x01004200L, 0x00000004L, 0x00004204L, 0x01004004L,
+     0x00000200L, 0x01000000L, 0x00004204L, 0x01004000L, 0x01004004L,
+     0x00000204L, 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
+     0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 0x00000200L,
+     0x01000004L, 0x00000004L, 0x01000200L, 0x00000000L, 0x01000204L,
+     0x01000200L, 0x00004200L, 0x00000204L, 0x00004000L, 0x01004204L,
+     0x01000000L, 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
+     0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, },
+    {  // nibble 7
+     0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 0x20020000L,
+     0x00800080L, 0x20800000L, 0x20820080L, 0x00000080L, 0x20000000L,
+     0x00820000L, 0x00020080L, 0x00820080L, 0x20020080L, 0x20000080L,
+     0x20800000L, 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
+     0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 0x20000000L,
+     0x00800000L, 0x20020080L, 0x20800080L, 0x00800000L, 0x00020000L,
+     0x20820000L, 0x00000080L, 0x00800000L, 0x00020000L, 0x20000080L,
+     0x20820080L, 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
+     0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 0x20820000L,
+     0x00000080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x00800000L,
+     0x20800000L, 0x20000080L, 0x00820000L, 0x00020080L, 0x20020080L,
+     0x20800000L, 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
+     0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, }};
+
+#define HPERM_OP(a, t, n, m)                  \
+  ((t) = ((((a) << (16 - (n))) ^ (a)) & (m)), \
+   (a) = (a) ^ (t) ^ ((t) >> (16 - (n))))
+
+void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule) {
+  static const int shifts2[16] = {0, 0, 1, 1, 1, 1, 1, 1,
+                                  0, 1, 1, 1, 1, 1, 1, 0};
+  uint32_t c, d, t, s, t2;
+  const uint8_t *in;
+  int i;
+
+  in = key->bytes;
+
+  c2l(in, c);
+  c2l(in, d);
+
+  // do PC1 in 47 simple operations :-)
+  // Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+  // for the inspiration. :-)
+  PERM_OP(d, c, t, 4, 0x0f0f0f0fL);
+  HPERM_OP(c, t, -2, 0xcccc0000L);
+  HPERM_OP(d, t, -2, 0xcccc0000L);
+  PERM_OP(d, c, t, 1, 0x55555555L);
+  PERM_OP(c, d, t, 8, 0x00ff00ffL);
+  PERM_OP(d, c, t, 1, 0x55555555L);
+  d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) |
+       ((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L));
+  c &= 0x0fffffffL;
+
+  for (i = 0; i < ITERATIONS; i++) {
+    if (shifts2[i]) {
+      c = ((c >> 2L) | (c << 26L));
+      d = ((d >> 2L) | (d << 26L));
+    } else {
+      c = ((c >> 1L) | (c << 27L));
+      d = ((d >> 1L) | (d << 27L));
+    }
+    c &= 0x0fffffffL;
+    d &= 0x0fffffffL;
+    // could be a few less shifts but I am to lazy at this
+    // point in time to investigate
+    s = des_skb[0][(c) & 0x3f] |
+        des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] |
+        des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] |
+        des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) |
+                   ((c >> 22L) & 0x38)];
+    t = des_skb[4][(d) & 0x3f] |
+        des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] |
+        des_skb[6][(d >> 15L) & 0x3f] |
+        des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)];
+
+    // table contained 0213 4657
+    t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL;
+    schedule->subkeys[i][0] = ROTATE(t2, 30) & 0xffffffffL;
+
+    t2 = ((s >> 16L) | (t & 0xffff0000L));
+    schedule->subkeys[i][1] = ROTATE(t2, 26) & 0xffffffffL;
+  }
+}
+
+static const uint8_t kOddParity[256] = {
+    1,   1,   2,   2,   4,   4,   7,   7,   8,   8,   11,  11,  13,  13,  14,
+    14,  16,  16,  19,  19,  21,  21,  22,  22,  25,  25,  26,  26,  28,  28,
+    31,  31,  32,  32,  35,  35,  37,  37,  38,  38,  41,  41,  42,  42,  44,
+    44,  47,  47,  49,  49,  50,  50,  52,  52,  55,  55,  56,  56,  59,  59,
+    61,  61,  62,  62,  64,  64,  67,  67,  69,  69,  70,  70,  73,  73,  74,
+    74,  76,  76,  79,  79,  81,  81,  82,  82,  84,  84,  87,  87,  88,  88,
+    91,  91,  93,  93,  94,  94,  97,  97,  98,  98,  100, 100, 103, 103, 104,
+    104, 107, 107, 109, 109, 110, 110, 112, 112, 115, 115, 117, 117, 118, 118,
+    121, 121, 122, 122, 124, 124, 127, 127, 128, 128, 131, 131, 133, 133, 134,
+    134, 137, 137, 138, 138, 140, 140, 143, 143, 145, 145, 146, 146, 148, 148,
+    151, 151, 152, 152, 155, 155, 157, 157, 158, 158, 161, 161, 162, 162, 164,
+    164, 167, 167, 168, 168, 171, 171, 173, 173, 174, 174, 176, 176, 179, 179,
+    181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, 191, 193, 193, 194,
+    194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, 206, 208, 208,
+    211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, 223, 224,
+    224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, 239,
+    241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254,
+    254
+};
+
+void DES_set_odd_parity(DES_cblock *key) {
+  unsigned i;
+
+  for (i = 0; i < DES_KEY_SZ; i++) {
+    key->bytes[i] = kOddParity[key->bytes[i]];
+  }
+}
+
+static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) {
+  uint32_t l, r, t, u;
+
+  r = data[0];
+  l = data[1];
+
+  IP(r, l);
+  // Things have been modified so that the initial rotate is done outside
+  // the loop.  This required the DES_SPtrans values in sp.h to be
+  // rotated 1 bit to the right. One perl script later and things have a
+  // 5% speed up on a sparc2. Thanks to Richard Outerbridge
+  // <71755.204@CompuServe.COM> for pointing this out.
+  // clear the top bits on machines with 8byte longs
+  // shift left by 2
+  r = ROTATE(r, 29) & 0xffffffffL;
+  l = ROTATE(l, 29) & 0xffffffffL;
+
+  // I don't know if it is worth the effort of loop unrolling the
+  // inner loop
+  if (enc) {
+    D_ENCRYPT(ks, l, r, 0);
+    D_ENCRYPT(ks, r, l, 1);
+    D_ENCRYPT(ks, l, r, 2);
+    D_ENCRYPT(ks, r, l, 3);
+    D_ENCRYPT(ks, l, r, 4);
+    D_ENCRYPT(ks, r, l, 5);
+    D_ENCRYPT(ks, l, r, 6);
+    D_ENCRYPT(ks, r, l, 7);
+    D_ENCRYPT(ks, l, r, 8);
+    D_ENCRYPT(ks, r, l, 9);
+    D_ENCRYPT(ks, l, r, 10);
+    D_ENCRYPT(ks, r, l, 11);
+    D_ENCRYPT(ks, l, r, 12);
+    D_ENCRYPT(ks, r, l, 13);
+    D_ENCRYPT(ks, l, r, 14);
+    D_ENCRYPT(ks, r, l, 15);
+  } else {
+    D_ENCRYPT(ks, l, r, 15);
+    D_ENCRYPT(ks, r, l, 14);
+    D_ENCRYPT(ks, l, r, 13);
+    D_ENCRYPT(ks, r, l, 12);
+    D_ENCRYPT(ks, l, r, 11);
+    D_ENCRYPT(ks, r, l, 10);
+    D_ENCRYPT(ks, l, r, 9);
+    D_ENCRYPT(ks, r, l, 8);
+    D_ENCRYPT(ks, l, r, 7);
+    D_ENCRYPT(ks, r, l, 6);
+    D_ENCRYPT(ks, l, r, 5);
+    D_ENCRYPT(ks, r, l, 4);
+    D_ENCRYPT(ks, l, r, 3);
+    D_ENCRYPT(ks, r, l, 2);
+    D_ENCRYPT(ks, l, r, 1);
+    D_ENCRYPT(ks, r, l, 0);
+  }
+
+  // rotate and clear the top bits on machines with 8byte longs
+  l = ROTATE(l, 3) & 0xffffffffL;
+  r = ROTATE(r, 3) & 0xffffffffL;
+
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+static void DES_encrypt2(uint32_t *data, const DES_key_schedule *ks, int enc) {
+  uint32_t l, r, t, u;
+
+  r = data[0];
+  l = data[1];
+
+  // Things have been modified so that the initial rotate is done outside the
+  // loop.  This required the DES_SPtrans values in sp.h to be rotated 1 bit to
+  // the right. One perl script later and things have a 5% speed up on a
+  // sparc2. Thanks to Richard Outerbridge <71755.204@CompuServe.COM> for
+  // pointing this out.
+  // clear the top bits on machines with 8byte longs
+  r = ROTATE(r, 29) & 0xffffffffL;
+  l = ROTATE(l, 29) & 0xffffffffL;
+
+  // I don't know if it is worth the effort of loop unrolling the
+  // inner loop
+  if (enc) {
+    D_ENCRYPT(ks, l, r, 0);
+    D_ENCRYPT(ks, r, l, 1);
+    D_ENCRYPT(ks, l, r, 2);
+    D_ENCRYPT(ks, r, l, 3);
+    D_ENCRYPT(ks, l, r, 4);
+    D_ENCRYPT(ks, r, l, 5);
+    D_ENCRYPT(ks, l, r, 6);
+    D_ENCRYPT(ks, r, l, 7);
+    D_ENCRYPT(ks, l, r, 8);
+    D_ENCRYPT(ks, r, l, 9);
+    D_ENCRYPT(ks, l, r, 10);
+    D_ENCRYPT(ks, r, l, 11);
+    D_ENCRYPT(ks, l, r, 12);
+    D_ENCRYPT(ks, r, l, 13);
+    D_ENCRYPT(ks, l, r, 14);
+    D_ENCRYPT(ks, r, l, 15);
+  } else {
+    D_ENCRYPT(ks, l, r, 15);
+    D_ENCRYPT(ks, r, l, 14);
+    D_ENCRYPT(ks, l, r, 13);
+    D_ENCRYPT(ks, r, l, 12);
+    D_ENCRYPT(ks, l, r, 11);
+    D_ENCRYPT(ks, r, l, 10);
+    D_ENCRYPT(ks, l, r, 9);
+    D_ENCRYPT(ks, r, l, 8);
+    D_ENCRYPT(ks, l, r, 7);
+    D_ENCRYPT(ks, r, l, 6);
+    D_ENCRYPT(ks, l, r, 5);
+    D_ENCRYPT(ks, r, l, 4);
+    D_ENCRYPT(ks, l, r, 3);
+    D_ENCRYPT(ks, r, l, 2);
+    D_ENCRYPT(ks, l, r, 1);
+    D_ENCRYPT(ks, r, l, 0);
+  }
+  // rotate and clear the top bits on machines with 8byte longs
+  data[0] = ROTATE(l, 3) & 0xffffffffL;
+  data[1] = ROTATE(r, 3) & 0xffffffffL;
+}
+
+void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                  const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
+  uint32_t l, r;
+
+  l = data[0];
+  r = data[1];
+  IP(l, r);
+  data[0] = l;
+  data[1] = r;
+  DES_encrypt2((uint32_t *)data, ks1, DES_ENCRYPT);
+  DES_encrypt2((uint32_t *)data, ks2, DES_DECRYPT);
+  DES_encrypt2((uint32_t *)data, ks3, DES_ENCRYPT);
+  l = data[0];
+  r = data[1];
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                  const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
+  uint32_t l, r;
+
+  l = data[0];
+  r = data[1];
+  IP(l, r);
+  data[0] = l;
+  data[1] = r;
+  DES_encrypt2((uint32_t *)data, ks3, DES_DECRYPT);
+  DES_encrypt2((uint32_t *)data, ks2, DES_ENCRYPT);
+  DES_encrypt2((uint32_t *)data, ks1, DES_DECRYPT);
+  l = data[0];
+  r = data[1];
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+void DES_ecb_encrypt(const DES_cblock *in_block, DES_cblock *out_block,
+                     const DES_key_schedule *schedule, int is_encrypt) {
+  uint32_t l;
+  uint32_t ll[2];
+  const uint8_t *in = in_block->bytes;
+  uint8_t *out = out_block->bytes;
+
+  c2l(in, l);
+  ll[0] = l;
+  c2l(in, l);
+  ll[1] = l;
+  DES_encrypt1(ll, schedule, is_encrypt);
+  l = ll[0];
+  l2c(l, out);
+  l = ll[1];
+  l2c(l, out);
+  ll[0] = ll[1] = 0;
+}
+
+void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                      const DES_key_schedule *schedule, DES_cblock *ivec,
+                      int enc) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  uint32_t tin[2];
+  unsigned char *iv;
+
+  iv = ivec->bytes;
+
+  if (enc) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin[0] = tin0;
+      tin1 ^= tout1;
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    if (len != 0) {
+      c2ln(in, tin0, tin1, len);
+      tin0 ^= tout0;
+      tin[0] = tin0;
+      tin1 ^= tout1;
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    iv = ivec->bytes;
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    if (len != 0) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2cn(tout0, tout1, out, len);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    iv = ivec->bytes;
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+  tin[0] = tin[1] = 0;
+}
+
+void DES_ecb3_encrypt(const DES_cblock *input, DES_cblock *output,
+                      const DES_key_schedule *ks1, const DES_key_schedule *ks2,
+                      const DES_key_schedule *ks3, int enc) {
+  uint32_t l0, l1;
+  uint32_t ll[2];
+  const uint8_t *in = input->bytes;
+  uint8_t *out = output->bytes;
+
+  c2l(in, l0);
+  c2l(in, l1);
+  ll[0] = l0;
+  ll[1] = l1;
+  if (enc) {
+    DES_encrypt3(ll, ks1, ks2, ks3);
+  } else {
+    DES_decrypt3(ll, ks1, ks2, ks3);
+  }
+  l0 = ll[0];
+  l1 = ll[1];
+  l2c(l0, out);
+  l2c(l1, out);
+}
+
+void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const DES_key_schedule *ks1,
+                          const DES_key_schedule *ks2,
+                          const DES_key_schedule *ks3, DES_cblock *ivec,
+                          int enc) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  uint32_t tin[2];
+  uint8_t *iv;
+
+  iv = ivec->bytes;
+
+  if (enc) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      l2c(tout0, out);
+      l2c(tout1, out);
+    }
+    if (len != 0) {
+      c2ln(in, tin0, tin1, len);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      l2c(tout0, out);
+      l2c(tout1, out);
+    }
+    iv = ivec->bytes;
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    uint32_t t0, t1;
+
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+
+      t0 = tin0;
+      t1 = tin1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      tout0 ^= xor0;
+      tout1 ^= xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = t0;
+      xor1 = t1;
+    }
+    if (len != 0) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+
+      t0 = tin0;
+      t1 = tin1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      tout0 ^= xor0;
+      tout1 ^= xor1;
+      l2cn(tout0, tout1, out, len);
+      xor0 = t0;
+      xor1 = t1;
+    }
+
+    iv = ivec->bytes;
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+
+  tin[0] = tin[1] = 0;
+}
+
+void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const DES_key_schedule *ks1,
+                          const DES_key_schedule *ks2,
+                          DES_cblock *ivec,
+                          int enc) {
+  DES_ede3_cbc_encrypt(in, out, len, ks1, ks2, ks1, ivec, enc);
+}
+
+
+// Deprecated functions.
+
+void DES_set_key_unchecked(const DES_cblock *key, DES_key_schedule *schedule) {
+  DES_set_key(key, schedule);
+}
+
+#undef HPERM_OP
+#undef c2l
+#undef l2c
+#undef c2ln
+#undef l2cn
+#undef PERM_OP
+#undef IP
+#undef FP
+#undef LOAD_DATA
+#undef D_ENCRYPT
+#undef ITERATIONS
+#undef HALF_ITERATIONS
+#undef ROTATE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c.grpc_back
new file mode 100644
index 0000000..2b0fdcd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/des.c.grpc_back	
@@ -0,0 +1,785 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/des.h>
+
+#include <stdlib.h>
+
+#include "internal.h"
+
+
+static const uint32_t des_skb[8][64] = {
+    {  // for C bits (numbered as per FIPS 46) 1 2 3 4 5 6
+     0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L, 0x00010000L,
+     0x00010010L, 0x20010000L, 0x20010010L, 0x00000800L, 0x00000810L,
+     0x20000800L, 0x20000810L, 0x00010800L, 0x00010810L, 0x20010800L,
+     0x20010810L, 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L,
+     0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L, 0x00000820L,
+     0x00000830L, 0x20000820L, 0x20000830L, 0x00010820L, 0x00010830L,
+     0x20010820L, 0x20010830L, 0x00080000L, 0x00080010L, 0x20080000L,
+     0x20080010L, 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L,
+     0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L, 0x00090800L,
+     0x00090810L, 0x20090800L, 0x20090810L, 0x00080020L, 0x00080030L,
+     0x20080020L, 0x20080030L, 0x00090020L, 0x00090030L, 0x20090020L,
+     0x20090030L, 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L,
+     0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L, },
+    {  // for C bits (numbered as per FIPS 46) 7 8 10 11 12 13
+     0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L, 0x00200000L,
+     0x02200000L, 0x00202000L, 0x02202000L, 0x00000004L, 0x02000004L,
+     0x00002004L, 0x02002004L, 0x00200004L, 0x02200004L, 0x00202004L,
+     0x02202004L, 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L,
+     0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L, 0x00000404L,
+     0x02000404L, 0x00002404L, 0x02002404L, 0x00200404L, 0x02200404L,
+     0x00202404L, 0x02202404L, 0x10000000L, 0x12000000L, 0x10002000L,
+     0x12002000L, 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L,
+     0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L, 0x10200004L,
+     0x12200004L, 0x10202004L, 0x12202004L, 0x10000400L, 0x12000400L,
+     0x10002400L, 0x12002400L, 0x10200400L, 0x12200400L, 0x10202400L,
+     0x12202400L, 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L,
+     0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L, },
+    {  // for C bits (numbered as per FIPS 46) 14 15 16 17 19 20
+     0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L, 0x01000000L,
+     0x01000001L, 0x01040000L, 0x01040001L, 0x00000002L, 0x00000003L,
+     0x00040002L, 0x00040003L, 0x01000002L, 0x01000003L, 0x01040002L,
+     0x01040003L, 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L,
+     0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L, 0x00000202L,
+     0x00000203L, 0x00040202L, 0x00040203L, 0x01000202L, 0x01000203L,
+     0x01040202L, 0x01040203L, 0x08000000L, 0x08000001L, 0x08040000L,
+     0x08040001L, 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L,
+     0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L, 0x09000002L,
+     0x09000003L, 0x09040002L, 0x09040003L, 0x08000200L, 0x08000201L,
+     0x08040200L, 0x08040201L, 0x09000200L, 0x09000201L, 0x09040200L,
+     0x09040201L, 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L,
+     0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L, },
+    {  // for C bits (numbered as per FIPS 46) 21 23 24 26 27 28
+     0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L, 0x00000008L,
+     0x00100008L, 0x00000108L, 0x00100108L, 0x00001000L, 0x00101000L,
+     0x00001100L, 0x00101100L, 0x00001008L, 0x00101008L, 0x00001108L,
+     0x00101108L, 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L,
+     0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L, 0x04001000L,
+     0x04101000L, 0x04001100L, 0x04101100L, 0x04001008L, 0x04101008L,
+     0x04001108L, 0x04101108L, 0x00020000L, 0x00120000L, 0x00020100L,
+     0x00120100L, 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L,
+     0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L, 0x00021008L,
+     0x00121008L, 0x00021108L, 0x00121108L, 0x04020000L, 0x04120000L,
+     0x04020100L, 0x04120100L, 0x04020008L, 0x04120008L, 0x04020108L,
+     0x04120108L, 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L,
+     0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L, },
+    {  // for D bits (numbered as per FIPS 46) 1 2 3 4 5 6
+     0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L, 0x00000004L,
+     0x10000004L, 0x00010004L, 0x10010004L, 0x20000000L, 0x30000000L,
+     0x20010000L, 0x30010000L, 0x20000004L, 0x30000004L, 0x20010004L,
+     0x30010004L, 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L,
+     0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L, 0x20100000L,
+     0x30100000L, 0x20110000L, 0x30110000L, 0x20100004L, 0x30100004L,
+     0x20110004L, 0x30110004L, 0x00001000L, 0x10001000L, 0x00011000L,
+     0x10011000L, 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L,
+     0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L, 0x20001004L,
+     0x30001004L, 0x20011004L, 0x30011004L, 0x00101000L, 0x10101000L,
+     0x00111000L, 0x10111000L, 0x00101004L, 0x10101004L, 0x00111004L,
+     0x10111004L, 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L,
+     0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L, },
+    {  // for D bits (numbered as per FIPS 46) 8 9 11 12 13 14
+     0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L, 0x00000400L,
+     0x08000400L, 0x00000408L, 0x08000408L, 0x00020000L, 0x08020000L,
+     0x00020008L, 0x08020008L, 0x00020400L, 0x08020400L, 0x00020408L,
+     0x08020408L, 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L,
+     0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L, 0x00020001L,
+     0x08020001L, 0x00020009L, 0x08020009L, 0x00020401L, 0x08020401L,
+     0x00020409L, 0x08020409L, 0x02000000L, 0x0A000000L, 0x02000008L,
+     0x0A000008L, 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L,
+     0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L, 0x02020400L,
+     0x0A020400L, 0x02020408L, 0x0A020408L, 0x02000001L, 0x0A000001L,
+     0x02000009L, 0x0A000009L, 0x02000401L, 0x0A000401L, 0x02000409L,
+     0x0A000409L, 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L,
+     0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L, },
+    {  // for D bits (numbered as per FIPS 46) 16 17 18 19 20 21
+     0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L, 0x01000000L,
+     0x01000100L, 0x01080000L, 0x01080100L, 0x00000010L, 0x00000110L,
+     0x00080010L, 0x00080110L, 0x01000010L, 0x01000110L, 0x01080010L,
+     0x01080110L, 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L,
+     0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L, 0x00200010L,
+     0x00200110L, 0x00280010L, 0x00280110L, 0x01200010L, 0x01200110L,
+     0x01280010L, 0x01280110L, 0x00000200L, 0x00000300L, 0x00080200L,
+     0x00080300L, 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L,
+     0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L, 0x01000210L,
+     0x01000310L, 0x01080210L, 0x01080310L, 0x00200200L, 0x00200300L,
+     0x00280200L, 0x00280300L, 0x01200200L, 0x01200300L, 0x01280200L,
+     0x01280300L, 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L,
+     0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L, },
+    {  // for D bits (numbered as per FIPS 46) 22 23 24 25 27 28
+     0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L, 0x00000002L,
+     0x04000002L, 0x00040002L, 0x04040002L, 0x00002000L, 0x04002000L,
+     0x00042000L, 0x04042000L, 0x00002002L, 0x04002002L, 0x00042002L,
+     0x04042002L, 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L,
+     0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L, 0x00002020L,
+     0x04002020L, 0x00042020L, 0x04042020L, 0x00002022L, 0x04002022L,
+     0x00042022L, 0x04042022L, 0x00000800L, 0x04000800L, 0x00040800L,
+     0x04040800L, 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L,
+     0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L, 0x00002802L,
+     0x04002802L, 0x00042802L, 0x04042802L, 0x00000820L, 0x04000820L,
+     0x00040820L, 0x04040820L, 0x00000822L, 0x04000822L, 0x00040822L,
+     0x04040822L, 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L,
+     0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L, }};
+
+static const uint32_t DES_SPtrans[8][64] = {
+    {  // nibble 0
+     0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 0x02000000L,
+     0x00080802L, 0x00080002L, 0x02000002L, 0x00080802L, 0x02080800L,
+     0x02080000L, 0x00000802L, 0x02000802L, 0x02000000L, 0x00000000L,
+     0x00080002L, 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
+     0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 0x00000002L,
+     0x00000800L, 0x00080800L, 0x02080002L, 0x00000800L, 0x02000802L,
+     0x02080002L, 0x00000000L, 0x00000000L, 0x02080802L, 0x02000800L,
+     0x00080002L, 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
+     0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 0x00080802L,
+     0x00000002L, 0x02000002L, 0x02080000L, 0x02080802L, 0x00080800L,
+     0x02080000L, 0x02000802L, 0x02000000L, 0x00000802L, 0x00080002L,
+     0x00000000L, 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
+     0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, },
+    {  // nibble 1
+     0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 0x40000010L,
+     0x00008010L, 0x40008000L, 0x00108000L, 0x00008000L, 0x40100010L,
+     0x00000010L, 0x40008000L, 0x00100010L, 0x40108000L, 0x40100000L,
+     0x00000010L, 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
+     0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 0x40008010L,
+     0x00108010L, 0x40108000L, 0x40000010L, 0x40000000L, 0x00100000L,
+     0x00008010L, 0x40108010L, 0x00100010L, 0x40108000L, 0x40008000L,
+     0x00108010L, 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
+     0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 0x00008000L,
+     0x40000000L, 0x00108010L, 0x40008010L, 0x40108000L, 0x00008000L,
+     0x00000000L, 0x40000010L, 0x00000010L, 0x40108010L, 0x00108000L,
+     0x40100000L, 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
+     0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, },
+    {  // nibble 2
+     0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 0x00040001L,
+     0x04000000L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00040000L,
+     0x04040000L, 0x00000001L, 0x04040101L, 0x00000101L, 0x00000001L,
+     0x04040001L, 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
+     0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 0x04040001L,
+     0x04000100L, 0x00040101L, 0x04040000L, 0x00040100L, 0x00000000L,
+     0x04000000L, 0x00040101L, 0x04040100L, 0x00000100L, 0x00000001L,
+     0x00040000L, 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
+     0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 0x00040001L,
+     0x04000000L, 0x04040101L, 0x00000001L, 0x00040101L, 0x04000001L,
+     0x04000000L, 0x04040101L, 0x00040000L, 0x04000100L, 0x04000101L,
+     0x00040100L, 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
+     0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, },
+    {  // nibble 3
+     0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 0x00000000L,
+     0x10400000L, 0x10001008L, 0x00400008L, 0x10401000L, 0x10000008L,
+     0x10000000L, 0x00001008L, 0x10000008L, 0x00401008L, 0x00400000L,
+     0x10000000L, 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
+     0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 0x00001008L,
+     0x00000000L, 0x00400008L, 0x10401000L, 0x10001000L, 0x10400008L,
+     0x10401008L, 0x00400000L, 0x10400008L, 0x00001008L, 0x00400000L,
+     0x10000008L, 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
+     0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 0x00000000L,
+     0x10400008L, 0x10401000L, 0x00001000L, 0x10000000L, 0x10401008L,
+     0x00401008L, 0x00400000L, 0x10401008L, 0x00000008L, 0x10001000L,
+     0x00401008L, 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
+     0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, },
+    {  // nibble 4
+     0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 0x08010020L,
+     0x08000400L, 0x00010420L, 0x08010000L, 0x00010000L, 0x00000020L,
+     0x08000020L, 0x00010400L, 0x08000420L, 0x08010020L, 0x08010400L,
+     0x00000000L, 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
+     0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 0x00000020L,
+     0x08000420L, 0x08010420L, 0x00010020L, 0x08010000L, 0x00000400L,
+     0x00000420L, 0x08010400L, 0x08010400L, 0x08000420L, 0x00010020L,
+     0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
+     0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 0x00010420L,
+     0x08000000L, 0x00000400L, 0x00010020L, 0x08000420L, 0x00000400L,
+     0x00000000L, 0x08010420L, 0x08010020L, 0x08010400L, 0x00000420L,
+     0x00010000L, 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
+     0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, },
+    {  // nibble 5
+     0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 0x00200040L,
+     0x00002000L, 0x80002040L, 0x00200000L, 0x00002040L, 0x80202040L,
+     0x00202000L, 0x80000000L, 0x80002000L, 0x80000040L, 0x80200000L,
+     0x00202040L, 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
+     0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 0x80202040L,
+     0x80200000L, 0x80000000L, 0x00002040L, 0x00000040L, 0x00202000L,
+     0x00202040L, 0x80002000L, 0x00002040L, 0x80000000L, 0x80002000L,
+     0x00202040L, 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
+     0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 0x00200040L,
+     0x80202040L, 0x00202000L, 0x00000040L, 0x80202040L, 0x00202000L,
+     0x00200000L, 0x80002040L, 0x80000040L, 0x80200000L, 0x00202040L,
+     0x00000000L, 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
+     0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, },
+    {  // nibble 6
+     0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 0x01004204L,
+     0x00004004L, 0x00004200L, 0x00000000L, 0x01000000L, 0x01000204L,
+     0x00000204L, 0x01004000L, 0x00000004L, 0x01004200L, 0x01004000L,
+     0x00000204L, 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
+     0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 0x01004004L,
+     0x00004204L, 0x01004200L, 0x00000004L, 0x00004204L, 0x01004004L,
+     0x00000200L, 0x01000000L, 0x00004204L, 0x01004000L, 0x01004004L,
+     0x00000204L, 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
+     0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 0x00000200L,
+     0x01000004L, 0x00000004L, 0x01000200L, 0x00000000L, 0x01000204L,
+     0x01000200L, 0x00004200L, 0x00000204L, 0x00004000L, 0x01004204L,
+     0x01000000L, 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
+     0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, },
+    {  // nibble 7
+     0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 0x20020000L,
+     0x00800080L, 0x20800000L, 0x20820080L, 0x00000080L, 0x20000000L,
+     0x00820000L, 0x00020080L, 0x00820080L, 0x20020080L, 0x20000080L,
+     0x20800000L, 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
+     0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 0x20000000L,
+     0x00800000L, 0x20020080L, 0x20800080L, 0x00800000L, 0x00020000L,
+     0x20820000L, 0x00000080L, 0x00800000L, 0x00020000L, 0x20000080L,
+     0x20820080L, 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
+     0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 0x20820000L,
+     0x00000080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x00800000L,
+     0x20800000L, 0x20000080L, 0x00820000L, 0x00020080L, 0x20020080L,
+     0x20800000L, 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
+     0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, }};
+
+#define HPERM_OP(a, t, n, m)                  \
+  ((t) = ((((a) << (16 - (n))) ^ (a)) & (m)), \
+   (a) = (a) ^ (t) ^ ((t) >> (16 - (n))))
+
+void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule) {
+  static const int shifts2[16] = {0, 0, 1, 1, 1, 1, 1, 1,
+                                  0, 1, 1, 1, 1, 1, 1, 0};
+  uint32_t c, d, t, s, t2;
+  const uint8_t *in;
+  int i;
+
+  in = key->bytes;
+
+  c2l(in, c);
+  c2l(in, d);
+
+  // do PC1 in 47 simple operations :-)
+  // Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+  // for the inspiration. :-)
+  PERM_OP(d, c, t, 4, 0x0f0f0f0fL);
+  HPERM_OP(c, t, -2, 0xcccc0000L);
+  HPERM_OP(d, t, -2, 0xcccc0000L);
+  PERM_OP(d, c, t, 1, 0x55555555L);
+  PERM_OP(c, d, t, 8, 0x00ff00ffL);
+  PERM_OP(d, c, t, 1, 0x55555555L);
+  d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) |
+       ((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L));
+  c &= 0x0fffffffL;
+
+  for (i = 0; i < ITERATIONS; i++) {
+    if (shifts2[i]) {
+      c = ((c >> 2L) | (c << 26L));
+      d = ((d >> 2L) | (d << 26L));
+    } else {
+      c = ((c >> 1L) | (c << 27L));
+      d = ((d >> 1L) | (d << 27L));
+    }
+    c &= 0x0fffffffL;
+    d &= 0x0fffffffL;
+    // could be a few less shifts but I am to lazy at this
+    // point in time to investigate
+    s = des_skb[0][(c) & 0x3f] |
+        des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] |
+        des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] |
+        des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) |
+                   ((c >> 22L) & 0x38)];
+    t = des_skb[4][(d) & 0x3f] |
+        des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] |
+        des_skb[6][(d >> 15L) & 0x3f] |
+        des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)];
+
+    // table contained 0213 4657
+    t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL;
+    schedule->subkeys[i][0] = ROTATE(t2, 30) & 0xffffffffL;
+
+    t2 = ((s >> 16L) | (t & 0xffff0000L));
+    schedule->subkeys[i][1] = ROTATE(t2, 26) & 0xffffffffL;
+  }
+}
+
+static const uint8_t kOddParity[256] = {
+    1,   1,   2,   2,   4,   4,   7,   7,   8,   8,   11,  11,  13,  13,  14,
+    14,  16,  16,  19,  19,  21,  21,  22,  22,  25,  25,  26,  26,  28,  28,
+    31,  31,  32,  32,  35,  35,  37,  37,  38,  38,  41,  41,  42,  42,  44,
+    44,  47,  47,  49,  49,  50,  50,  52,  52,  55,  55,  56,  56,  59,  59,
+    61,  61,  62,  62,  64,  64,  67,  67,  69,  69,  70,  70,  73,  73,  74,
+    74,  76,  76,  79,  79,  81,  81,  82,  82,  84,  84,  87,  87,  88,  88,
+    91,  91,  93,  93,  94,  94,  97,  97,  98,  98,  100, 100, 103, 103, 104,
+    104, 107, 107, 109, 109, 110, 110, 112, 112, 115, 115, 117, 117, 118, 118,
+    121, 121, 122, 122, 124, 124, 127, 127, 128, 128, 131, 131, 133, 133, 134,
+    134, 137, 137, 138, 138, 140, 140, 143, 143, 145, 145, 146, 146, 148, 148,
+    151, 151, 152, 152, 155, 155, 157, 157, 158, 158, 161, 161, 162, 162, 164,
+    164, 167, 167, 168, 168, 171, 171, 173, 173, 174, 174, 176, 176, 179, 179,
+    181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, 191, 193, 193, 194,
+    194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, 206, 208, 208,
+    211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, 223, 224,
+    224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, 239,
+    241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254,
+    254
+};
+
+void DES_set_odd_parity(DES_cblock *key) {
+  unsigned i;
+
+  for (i = 0; i < DES_KEY_SZ; i++) {
+    key->bytes[i] = kOddParity[key->bytes[i]];
+  }
+}
+
+static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) {
+  uint32_t l, r, t, u;
+
+  r = data[0];
+  l = data[1];
+
+  IP(r, l);
+  // Things have been modified so that the initial rotate is done outside
+  // the loop.  This required the DES_SPtrans values in sp.h to be
+  // rotated 1 bit to the right. One perl script later and things have a
+  // 5% speed up on a sparc2. Thanks to Richard Outerbridge
+  // <71755.204@CompuServe.COM> for pointing this out.
+  // clear the top bits on machines with 8byte longs
+  // shift left by 2
+  r = ROTATE(r, 29) & 0xffffffffL;
+  l = ROTATE(l, 29) & 0xffffffffL;
+
+  // I don't know if it is worth the effort of loop unrolling the
+  // inner loop
+  if (enc) {
+    D_ENCRYPT(ks, l, r, 0);
+    D_ENCRYPT(ks, r, l, 1);
+    D_ENCRYPT(ks, l, r, 2);
+    D_ENCRYPT(ks, r, l, 3);
+    D_ENCRYPT(ks, l, r, 4);
+    D_ENCRYPT(ks, r, l, 5);
+    D_ENCRYPT(ks, l, r, 6);
+    D_ENCRYPT(ks, r, l, 7);
+    D_ENCRYPT(ks, l, r, 8);
+    D_ENCRYPT(ks, r, l, 9);
+    D_ENCRYPT(ks, l, r, 10);
+    D_ENCRYPT(ks, r, l, 11);
+    D_ENCRYPT(ks, l, r, 12);
+    D_ENCRYPT(ks, r, l, 13);
+    D_ENCRYPT(ks, l, r, 14);
+    D_ENCRYPT(ks, r, l, 15);
+  } else {
+    D_ENCRYPT(ks, l, r, 15);
+    D_ENCRYPT(ks, r, l, 14);
+    D_ENCRYPT(ks, l, r, 13);
+    D_ENCRYPT(ks, r, l, 12);
+    D_ENCRYPT(ks, l, r, 11);
+    D_ENCRYPT(ks, r, l, 10);
+    D_ENCRYPT(ks, l, r, 9);
+    D_ENCRYPT(ks, r, l, 8);
+    D_ENCRYPT(ks, l, r, 7);
+    D_ENCRYPT(ks, r, l, 6);
+    D_ENCRYPT(ks, l, r, 5);
+    D_ENCRYPT(ks, r, l, 4);
+    D_ENCRYPT(ks, l, r, 3);
+    D_ENCRYPT(ks, r, l, 2);
+    D_ENCRYPT(ks, l, r, 1);
+    D_ENCRYPT(ks, r, l, 0);
+  }
+
+  // rotate and clear the top bits on machines with 8byte longs
+  l = ROTATE(l, 3) & 0xffffffffL;
+  r = ROTATE(r, 3) & 0xffffffffL;
+
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+static void DES_encrypt2(uint32_t *data, const DES_key_schedule *ks, int enc) {
+  uint32_t l, r, t, u;
+
+  r = data[0];
+  l = data[1];
+
+  // Things have been modified so that the initial rotate is done outside the
+  // loop.  This required the DES_SPtrans values in sp.h to be rotated 1 bit to
+  // the right. One perl script later and things have a 5% speed up on a
+  // sparc2. Thanks to Richard Outerbridge <71755.204@CompuServe.COM> for
+  // pointing this out.
+  // clear the top bits on machines with 8byte longs
+  r = ROTATE(r, 29) & 0xffffffffL;
+  l = ROTATE(l, 29) & 0xffffffffL;
+
+  // I don't know if it is worth the effort of loop unrolling the
+  // inner loop
+  if (enc) {
+    D_ENCRYPT(ks, l, r, 0);
+    D_ENCRYPT(ks, r, l, 1);
+    D_ENCRYPT(ks, l, r, 2);
+    D_ENCRYPT(ks, r, l, 3);
+    D_ENCRYPT(ks, l, r, 4);
+    D_ENCRYPT(ks, r, l, 5);
+    D_ENCRYPT(ks, l, r, 6);
+    D_ENCRYPT(ks, r, l, 7);
+    D_ENCRYPT(ks, l, r, 8);
+    D_ENCRYPT(ks, r, l, 9);
+    D_ENCRYPT(ks, l, r, 10);
+    D_ENCRYPT(ks, r, l, 11);
+    D_ENCRYPT(ks, l, r, 12);
+    D_ENCRYPT(ks, r, l, 13);
+    D_ENCRYPT(ks, l, r, 14);
+    D_ENCRYPT(ks, r, l, 15);
+  } else {
+    D_ENCRYPT(ks, l, r, 15);
+    D_ENCRYPT(ks, r, l, 14);
+    D_ENCRYPT(ks, l, r, 13);
+    D_ENCRYPT(ks, r, l, 12);
+    D_ENCRYPT(ks, l, r, 11);
+    D_ENCRYPT(ks, r, l, 10);
+    D_ENCRYPT(ks, l, r, 9);
+    D_ENCRYPT(ks, r, l, 8);
+    D_ENCRYPT(ks, l, r, 7);
+    D_ENCRYPT(ks, r, l, 6);
+    D_ENCRYPT(ks, l, r, 5);
+    D_ENCRYPT(ks, r, l, 4);
+    D_ENCRYPT(ks, l, r, 3);
+    D_ENCRYPT(ks, r, l, 2);
+    D_ENCRYPT(ks, l, r, 1);
+    D_ENCRYPT(ks, r, l, 0);
+  }
+  // rotate and clear the top bits on machines with 8byte longs
+  data[0] = ROTATE(l, 3) & 0xffffffffL;
+  data[1] = ROTATE(r, 3) & 0xffffffffL;
+}
+
+void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                  const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
+  uint32_t l, r;
+
+  l = data[0];
+  r = data[1];
+  IP(l, r);
+  data[0] = l;
+  data[1] = r;
+  DES_encrypt2((uint32_t *)data, ks1, DES_ENCRYPT);
+  DES_encrypt2((uint32_t *)data, ks2, DES_DECRYPT);
+  DES_encrypt2((uint32_t *)data, ks3, DES_ENCRYPT);
+  l = data[0];
+  r = data[1];
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                  const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
+  uint32_t l, r;
+
+  l = data[0];
+  r = data[1];
+  IP(l, r);
+  data[0] = l;
+  data[1] = r;
+  DES_encrypt2((uint32_t *)data, ks3, DES_DECRYPT);
+  DES_encrypt2((uint32_t *)data, ks2, DES_ENCRYPT);
+  DES_encrypt2((uint32_t *)data, ks1, DES_DECRYPT);
+  l = data[0];
+  r = data[1];
+  FP(r, l);
+  data[0] = l;
+  data[1] = r;
+}
+
+void DES_ecb_encrypt(const DES_cblock *in_block, DES_cblock *out_block,
+                     const DES_key_schedule *schedule, int is_encrypt) {
+  uint32_t l;
+  uint32_t ll[2];
+  const uint8_t *in = in_block->bytes;
+  uint8_t *out = out_block->bytes;
+
+  c2l(in, l);
+  ll[0] = l;
+  c2l(in, l);
+  ll[1] = l;
+  DES_encrypt1(ll, schedule, is_encrypt);
+  l = ll[0];
+  l2c(l, out);
+  l = ll[1];
+  l2c(l, out);
+  ll[0] = ll[1] = 0;
+}
+
+void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                      const DES_key_schedule *schedule, DES_cblock *ivec,
+                      int enc) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  uint32_t tin[2];
+  unsigned char *iv;
+
+  iv = ivec->bytes;
+
+  if (enc) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin[0] = tin0;
+      tin1 ^= tout1;
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    if (len != 0) {
+      c2ln(in, tin0, tin1, len);
+      tin0 ^= tout0;
+      tin[0] = tin0;
+      tin1 ^= tout1;
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
+      tout0 = tin[0];
+      l2c(tout0, out);
+      tout1 = tin[1];
+      l2c(tout1, out);
+    }
+    iv = ivec->bytes;
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    if (len != 0) {
+      c2l(in, tin0);
+      tin[0] = tin0;
+      c2l(in, tin1);
+      tin[1] = tin1;
+      DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
+      tout0 = tin[0] ^ xor0;
+      tout1 = tin[1] ^ xor1;
+      l2cn(tout0, tout1, out, len);
+      xor0 = tin0;
+      xor1 = tin1;
+    }
+    iv = ivec->bytes;
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+  tin[0] = tin[1] = 0;
+}
+
+void DES_ecb3_encrypt(const DES_cblock *input, DES_cblock *output,
+                      const DES_key_schedule *ks1, const DES_key_schedule *ks2,
+                      const DES_key_schedule *ks3, int enc) {
+  uint32_t l0, l1;
+  uint32_t ll[2];
+  const uint8_t *in = input->bytes;
+  uint8_t *out = output->bytes;
+
+  c2l(in, l0);
+  c2l(in, l1);
+  ll[0] = l0;
+  ll[1] = l1;
+  if (enc) {
+    DES_encrypt3(ll, ks1, ks2, ks3);
+  } else {
+    DES_decrypt3(ll, ks1, ks2, ks3);
+  }
+  l0 = ll[0];
+  l1 = ll[1];
+  l2c(l0, out);
+  l2c(l1, out);
+}
+
+void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const DES_key_schedule *ks1,
+                          const DES_key_schedule *ks2,
+                          const DES_key_schedule *ks3, DES_cblock *ivec,
+                          int enc) {
+  uint32_t tin0, tin1;
+  uint32_t tout0, tout1, xor0, xor1;
+  uint32_t tin[2];
+  uint8_t *iv;
+
+  iv = ivec->bytes;
+
+  if (enc) {
+    c2l(iv, tout0);
+    c2l(iv, tout1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      l2c(tout0, out);
+      l2c(tout1, out);
+    }
+    if (len != 0) {
+      c2ln(in, tin0, tin1, len);
+      tin0 ^= tout0;
+      tin1 ^= tout1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      l2c(tout0, out);
+      l2c(tout1, out);
+    }
+    iv = ivec->bytes;
+    l2c(tout0, iv);
+    l2c(tout1, iv);
+  } else {
+    uint32_t t0, t1;
+
+    c2l(iv, xor0);
+    c2l(iv, xor1);
+    for (; len >= 8; len -= 8) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+
+      t0 = tin0;
+      t1 = tin1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      tout0 ^= xor0;
+      tout1 ^= xor1;
+      l2c(tout0, out);
+      l2c(tout1, out);
+      xor0 = t0;
+      xor1 = t1;
+    }
+    if (len != 0) {
+      c2l(in, tin0);
+      c2l(in, tin1);
+
+      t0 = tin0;
+      t1 = tin1;
+
+      tin[0] = tin0;
+      tin[1] = tin1;
+      DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
+      tout0 = tin[0];
+      tout1 = tin[1];
+
+      tout0 ^= xor0;
+      tout1 ^= xor1;
+      l2cn(tout0, tout1, out, len);
+      xor0 = t0;
+      xor1 = t1;
+    }
+
+    iv = ivec->bytes;
+    l2c(xor0, iv);
+    l2c(xor1, iv);
+  }
+
+  tin[0] = tin[1] = 0;
+}
+
+void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const DES_key_schedule *ks1,
+                          const DES_key_schedule *ks2,
+                          DES_cblock *ivec,
+                          int enc) {
+  DES_ede3_cbc_encrypt(in, out, len, ks1, ks2, ks1, ivec, enc);
+}
+
+
+// Deprecated functions.
+
+void DES_set_key_unchecked(const DES_cblock *key, DES_key_schedule *schedule) {
+  DES_set_key(key, schedule);
+}
+
+#undef HPERM_OP
+#undef c2l
+#undef l2c
+#undef c2ln
+#undef l2cn
+#undef PERM_OP
+#undef IP
+#undef FP
+#undef LOAD_DATA
+#undef D_ENCRYPT
+#undef ITERATIONS
+#undef HALF_ITERATIONS
+#undef ROTATE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h
new file mode 100644
index 0000000..841812a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h	
@@ -0,0 +1,240 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_INTERNAL_H
+#define OPENSSL_HEADER_DES_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#define c2l(c, l)                         \
+  do {                                    \
+    (l) = ((uint32_t)(*((c)++)));         \
+    (l) |= ((uint32_t)(*((c)++))) << 8L;  \
+    (l) |= ((uint32_t)(*((c)++))) << 16L; \
+    (l) |= ((uint32_t)(*((c)++))) << 24L; \
+  } while (0)
+
+#define l2c(l, c)                                    \
+  do {                                               \
+    *((c)++) = (unsigned char)(((l)) & 0xff);        \
+    *((c)++) = (unsigned char)(((l) >> 8L) & 0xff);  \
+    *((c)++) = (unsigned char)(((l) >> 16L) & 0xff); \
+    *((c)++) = (unsigned char)(((l) >> 24L) & 0xff); \
+  } while (0)
+
+// NOTE - c is not incremented as per c2l
+#define c2ln(c, l1, l2, n)                     \
+  do {                                         \
+    (c) += (n);                                \
+    (l1) = (l2) = 0;                           \
+    switch (n) {                               \
+      case 8:                                  \
+        (l2) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 7:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 6:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 5:                                  \
+        (l2) |= ((uint32_t)(*(--(c))));        \
+        OPENSSL_FALLTHROUGH;                   \
+      case 4:                                  \
+        (l1) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 3:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 2:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 1:                                  \
+        (l1) |= ((uint32_t)(*(--(c))));        \
+    }                                          \
+  } while (0)
+
+// NOTE - c is not incremented as per l2c
+#define l2cn(l1, l2, c, n)                                \
+  do {                                                    \
+    (c) += (n);                                           \
+    switch (n) {                                          \
+      case 8:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 7:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 6:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                              \
+      case 5:                                             \
+        *(--(c)) = (unsigned char)(((l2)) & 0xff);        \
+        OPENSSL_FALLTHROUGH;                              \
+      case 4:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 3:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 2:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                              \
+      case 1:                                             \
+        *(--(c)) = (unsigned char)(((l1)) & 0xff);        \
+    }                                                     \
+  } while (0)
+
+/* IP and FP
+ * The problem is more of a geometric problem that random bit fiddling.
+ 0  1  2  3  4  5  6  7      62 54 46 38 30 22 14  6
+ 8  9 10 11 12 13 14 15      60 52 44 36 28 20 12  4
+16 17 18 19 20 21 22 23      58 50 42 34 26 18 10  2
+24 25 26 27 28 29 30 31  to  56 48 40 32 24 16  8  0
+
+32 33 34 35 36 37 38 39      63 55 47 39 31 23 15  7
+40 41 42 43 44 45 46 47      61 53 45 37 29 21 13  5
+48 49 50 51 52 53 54 55      59 51 43 35 27 19 11  3
+56 57 58 59 60 61 62 63      57 49 41 33 25 17  9  1
+
+The output has been subject to swaps of the form
+0 1 -> 3 1 but the odd and even bits have been put into
+2 3    2 0
+different words.  The main trick is to remember that
+t=((l>>size)^r)&(mask);
+r^=t;
+l^=(t<<size);
+can be used to swap and move bits between words.
+
+So l =  0  1  2  3  r = 16 17 18 19
+        4  5  6  7      20 21 22 23
+        8  9 10 11      24 25 26 27
+       12 13 14 15      28 29 30 31
+becomes (for size == 2 and mask == 0x3333)
+   t =   2^16  3^17 -- --   l =  0  1 16 17  r =  2  3 18 19
+         6^20  7^21 -- --        4  5 20 21       6  7 22 23
+        10^24 11^25 -- --        8  9 24 25      10 11 24 25
+        14^28 15^29 -- --       12 13 28 29      14 15 28 29
+
+Thanks for hints from Richard Outerbridge - he told me IP&FP
+could be done in 15 xor, 10 shifts and 5 ands.
+When I finally started to think of the problem in 2D
+I first got ~42 operations without xors.  When I remembered
+how to use xors :-) I got it to its final state.
+*/
+#define PERM_OP(a, b, t, n, m)          \
+  do {                                  \
+    (t) = ((((a) >> (n)) ^ (b)) & (m)); \
+    (b) ^= (t);                         \
+    (a) ^= ((t) << (n));                \
+  } while (0)
+
+#define IP(l, r)                        \
+  do {                                  \
+    uint32_t tt;                        \
+    PERM_OP(r, l, tt, 4, 0x0f0f0f0fL);  \
+    PERM_OP(l, r, tt, 16, 0x0000ffffL); \
+    PERM_OP(r, l, tt, 2, 0x33333333L);  \
+    PERM_OP(l, r, tt, 8, 0x00ff00ffL);  \
+    PERM_OP(r, l, tt, 1, 0x55555555L);  \
+  } while (0)
+
+#define FP(l, r)                        \
+  do {                                  \
+    uint32_t tt;                        \
+    PERM_OP(l, r, tt, 1, 0x55555555L);  \
+    PERM_OP(r, l, tt, 8, 0x00ff00ffL);  \
+    PERM_OP(l, r, tt, 2, 0x33333333L);  \
+    PERM_OP(r, l, tt, 16, 0x0000ffffL); \
+    PERM_OP(l, r, tt, 4, 0x0f0f0f0fL);  \
+  } while (0)
+
+#define LOAD_DATA(ks, R, S, u, t, E0, E1) \
+  do {                                    \
+    (u) = (R) ^ (ks)->subkeys[S][0];      \
+    (t) = (R) ^ (ks)->subkeys[S][1];      \
+  } while (0)
+
+#define D_ENCRYPT(ks, LL, R, S)                                                \
+  do {                                                                         \
+    LOAD_DATA(ks, R, S, u, t, E0, E1);                                         \
+    t = ROTATE(t, 4);                                                          \
+    (LL) ^=                                                                    \
+        DES_SPtrans[0][(u >> 2L) & 0x3f] ^ DES_SPtrans[2][(u >> 10L) & 0x3f] ^ \
+        DES_SPtrans[4][(u >> 18L) & 0x3f] ^                                    \
+        DES_SPtrans[6][(u >> 26L) & 0x3f] ^ DES_SPtrans[1][(t >> 2L) & 0x3f] ^ \
+        DES_SPtrans[3][(t >> 10L) & 0x3f] ^                                    \
+        DES_SPtrans[5][(t >> 18L) & 0x3f] ^ DES_SPtrans[7][(t >> 26L) & 0x3f]; \
+  } while (0)
+
+#define ITERATIONS 16
+#define HALF_ITERATIONS 8
+
+#define ROTATE(a, n) (((a) >> (n)) + ((a) << (32 - (n))))
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h.grpc_back
new file mode 100644
index 0000000..1ae3f22
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/des/internal.h.grpc_back	
@@ -0,0 +1,240 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_INTERNAL_H
+#define OPENSSL_HEADER_DES_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#define c2l(c, l)                         \
+  do {                                    \
+    (l) = ((uint32_t)(*((c)++)));         \
+    (l) |= ((uint32_t)(*((c)++))) << 8L;  \
+    (l) |= ((uint32_t)(*((c)++))) << 16L; \
+    (l) |= ((uint32_t)(*((c)++))) << 24L; \
+  } while (0)
+
+#define l2c(l, c)                                    \
+  do {                                               \
+    *((c)++) = (unsigned char)(((l)) & 0xff);        \
+    *((c)++) = (unsigned char)(((l) >> 8L) & 0xff);  \
+    *((c)++) = (unsigned char)(((l) >> 16L) & 0xff); \
+    *((c)++) = (unsigned char)(((l) >> 24L) & 0xff); \
+  } while (0)
+
+// NOTE - c is not incremented as per c2l
+#define c2ln(c, l1, l2, n)                     \
+  do {                                         \
+    (c) += (n);                                \
+    (l1) = (l2) = 0;                           \
+    switch (n) {                               \
+      case 8:                                  \
+        (l2) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 7:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 6:                                  \
+        (l2) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 5:                                  \
+        (l2) |= ((uint32_t)(*(--(c))));        \
+        OPENSSL_FALLTHROUGH;                   \
+      case 4:                                  \
+        (l1) = ((uint32_t)(*(--(c)))) << 24L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 3:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 16L; \
+        OPENSSL_FALLTHROUGH;                   \
+      case 2:                                  \
+        (l1) |= ((uint32_t)(*(--(c)))) << 8L;  \
+        OPENSSL_FALLTHROUGH;                   \
+      case 1:                                  \
+        (l1) |= ((uint32_t)(*(--(c))));        \
+    }                                          \
+  } while (0)
+
+// NOTE - c is not incremented as per l2c
+#define l2cn(l1, l2, c, n)                                \
+  do {                                                    \
+    (c) += (n);                                           \
+    switch (n) {                                          \
+      case 8:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 7:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 6:                                             \
+        *(--(c)) = (unsigned char)(((l2) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                              \
+      case 5:                                             \
+        *(--(c)) = (unsigned char)(((l2)) & 0xff);        \
+        OPENSSL_FALLTHROUGH;                              \
+      case 4:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 24L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 3:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 16L) & 0xff); \
+        OPENSSL_FALLTHROUGH;                              \
+      case 2:                                             \
+        *(--(c)) = (unsigned char)(((l1) >> 8L) & 0xff);  \
+        OPENSSL_FALLTHROUGH;                              \
+      case 1:                                             \
+        *(--(c)) = (unsigned char)(((l1)) & 0xff);        \
+    }                                                     \
+  } while (0)
+
+/* IP and FP
+ * The problem is more of a geometric problem that random bit fiddling.
+ 0  1  2  3  4  5  6  7      62 54 46 38 30 22 14  6
+ 8  9 10 11 12 13 14 15      60 52 44 36 28 20 12  4
+16 17 18 19 20 21 22 23      58 50 42 34 26 18 10  2
+24 25 26 27 28 29 30 31  to  56 48 40 32 24 16  8  0
+
+32 33 34 35 36 37 38 39      63 55 47 39 31 23 15  7
+40 41 42 43 44 45 46 47      61 53 45 37 29 21 13  5
+48 49 50 51 52 53 54 55      59 51 43 35 27 19 11  3
+56 57 58 59 60 61 62 63      57 49 41 33 25 17  9  1
+
+The output has been subject to swaps of the form
+0 1 -> 3 1 but the odd and even bits have been put into
+2 3    2 0
+different words.  The main trick is to remember that
+t=((l>>size)^r)&(mask);
+r^=t;
+l^=(t<<size);
+can be used to swap and move bits between words.
+
+So l =  0  1  2  3  r = 16 17 18 19
+        4  5  6  7      20 21 22 23
+        8  9 10 11      24 25 26 27
+       12 13 14 15      28 29 30 31
+becomes (for size == 2 and mask == 0x3333)
+   t =   2^16  3^17 -- --   l =  0  1 16 17  r =  2  3 18 19
+         6^20  7^21 -- --        4  5 20 21       6  7 22 23
+        10^24 11^25 -- --        8  9 24 25      10 11 24 25
+        14^28 15^29 -- --       12 13 28 29      14 15 28 29
+
+Thanks for hints from Richard Outerbridge - he told me IP&FP
+could be done in 15 xor, 10 shifts and 5 ands.
+When I finally started to think of the problem in 2D
+I first got ~42 operations without xors.  When I remembered
+how to use xors :-) I got it to its final state.
+*/
+#define PERM_OP(a, b, t, n, m)          \
+  do {                                  \
+    (t) = ((((a) >> (n)) ^ (b)) & (m)); \
+    (b) ^= (t);                         \
+    (a) ^= ((t) << (n));                \
+  } while (0)
+
+#define IP(l, r)                        \
+  do {                                  \
+    uint32_t tt;                        \
+    PERM_OP(r, l, tt, 4, 0x0f0f0f0fL);  \
+    PERM_OP(l, r, tt, 16, 0x0000ffffL); \
+    PERM_OP(r, l, tt, 2, 0x33333333L);  \
+    PERM_OP(l, r, tt, 8, 0x00ff00ffL);  \
+    PERM_OP(r, l, tt, 1, 0x55555555L);  \
+  } while (0)
+
+#define FP(l, r)                        \
+  do {                                  \
+    uint32_t tt;                        \
+    PERM_OP(l, r, tt, 1, 0x55555555L);  \
+    PERM_OP(r, l, tt, 8, 0x00ff00ffL);  \
+    PERM_OP(l, r, tt, 2, 0x33333333L);  \
+    PERM_OP(r, l, tt, 16, 0x0000ffffL); \
+    PERM_OP(l, r, tt, 4, 0x0f0f0f0fL);  \
+  } while (0)
+
+#define LOAD_DATA(ks, R, S, u, t, E0, E1) \
+  do {                                    \
+    (u) = (R) ^ (ks)->subkeys[S][0];      \
+    (t) = (R) ^ (ks)->subkeys[S][1];      \
+  } while (0)
+
+#define D_ENCRYPT(ks, LL, R, S)                                                \
+  do {                                                                         \
+    LOAD_DATA(ks, R, S, u, t, E0, E1);                                         \
+    t = ROTATE(t, 4);                                                          \
+    (LL) ^=                                                                    \
+        DES_SPtrans[0][(u >> 2L) & 0x3f] ^ DES_SPtrans[2][(u >> 10L) & 0x3f] ^ \
+        DES_SPtrans[4][(u >> 18L) & 0x3f] ^                                    \
+        DES_SPtrans[6][(u >> 26L) & 0x3f] ^ DES_SPtrans[1][(t >> 2L) & 0x3f] ^ \
+        DES_SPtrans[3][(t >> 10L) & 0x3f] ^                                    \
+        DES_SPtrans[5][(t >> 18L) & 0x3f] ^ DES_SPtrans[7][(t >> 26L) & 0x3f]; \
+  } while (0)
+
+#define ITERATIONS 16
+#define HALF_ITERATIONS 8
+
+#define ROTATE(a, n) (((a) >> (n)) + ((a) << (32 - (n))))
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c
new file mode 100644
index 0000000..4bae3f4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c	
@@ -0,0 +1,271 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/digest.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int EVP_MD_type(const EVP_MD *md) { return md->type; }
+
+uint32_t EVP_MD_flags(const EVP_MD *md) { return md->flags; }
+
+size_t EVP_MD_size(const EVP_MD *md) { return md->md_size; }
+
+size_t EVP_MD_block_size(const EVP_MD *md) { return md->block_size; }
+
+
+void EVP_MD_CTX_init(EVP_MD_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_MD_CTX));
+}
+
+EVP_MD_CTX *EVP_MD_CTX_new(void) {
+  EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_MD_CTX));
+
+  if (ctx) {
+    EVP_MD_CTX_init(ctx);
+  }
+
+  return ctx;
+}
+
+EVP_MD_CTX *EVP_MD_CTX_create(void) { return EVP_MD_CTX_new(); }
+
+int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) {
+  OPENSSL_free(ctx->md_data);
+
+  assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+  if (ctx->pctx_ops) {
+    ctx->pctx_ops->free(ctx->pctx);
+  }
+
+  EVP_MD_CTX_init(ctx);
+
+  return 1;
+}
+
+void EVP_MD_CTX_free(EVP_MD_CTX *ctx) {
+  if (!ctx) {
+    return;
+  }
+
+  EVP_MD_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) { EVP_MD_CTX_free(ctx); }
+
+int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, uint8_t *out, size_t len) {
+  OPENSSL_PUT_ERROR(DIGEST, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+  return 0;
+}
+
+uint32_t EVP_MD_meth_get_flags(const EVP_MD *md) { return EVP_MD_flags(md); }
+
+int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+  // |in->digest| may be NULL if this is a signing |EVP_MD_CTX| for, e.g.,
+  // Ed25519 which does not hash with |EVP_MD_CTX|.
+  if (in == NULL || (in->pctx == NULL && in->digest == NULL)) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_INPUT_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EVP_PKEY_CTX *pctx = NULL;
+  assert(in->pctx == NULL || in->pctx_ops != NULL);
+  if (in->pctx) {
+    pctx = in->pctx_ops->dup(in->pctx);
+    if (!pctx) {
+      OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  uint8_t *tmp_buf = NULL;
+  if (in->digest != NULL) {
+    if (out->digest != in->digest) {
+      assert(in->digest->ctx_size != 0);
+      tmp_buf = OPENSSL_malloc(in->digest->ctx_size);
+      if (tmp_buf == NULL) {
+        if (pctx) {
+          in->pctx_ops->free(pctx);
+        }
+        OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    } else {
+      // |md_data| will be the correct size in this case. It's removed from
+      // |out| so that |EVP_MD_CTX_cleanup| doesn't free it, and then it's
+      // reused.
+      tmp_buf = out->md_data;
+      out->md_data = NULL;
+    }
+  }
+
+  EVP_MD_CTX_cleanup(out);
+
+  out->digest = in->digest;
+  out->md_data = tmp_buf;
+  if (in->digest != NULL) {
+    OPENSSL_memcpy(out->md_data, in->md_data, in->digest->ctx_size);
+  }
+  out->pctx = pctx;
+  out->pctx_ops = in->pctx_ops;
+  assert(out->pctx == NULL || out->pctx_ops != NULL);
+
+  return 1;
+}
+
+int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+  EVP_MD_CTX_init(out);
+  return EVP_MD_CTX_copy_ex(out, in);
+}
+
+int EVP_MD_CTX_reset(EVP_MD_CTX *ctx) {
+  EVP_MD_CTX_cleanup(ctx);
+  EVP_MD_CTX_init(ctx);
+  return 1;
+}
+
+int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *engine) {
+  if (ctx->digest != type) {
+    assert(type->ctx_size != 0);
+    uint8_t *md_data = OPENSSL_malloc(type->ctx_size);
+    if (md_data == NULL) {
+      OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+
+    OPENSSL_free(ctx->md_data);
+    ctx->md_data = md_data;
+    ctx->digest = type;
+  }
+
+  assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+
+  ctx->digest->init(ctx);
+  return 1;
+}
+
+int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  EVP_MD_CTX_init(ctx);
+  return EVP_DigestInit_ex(ctx, type, NULL);
+}
+
+int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  ctx->digest->update(ctx, data, len);
+  return 1;
+}
+
+int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out, unsigned int *size) {
+  assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
+  ctx->digest->final(ctx, md_out);
+  if (size != NULL) {
+    *size = ctx->digest->md_size;
+  }
+  OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+  return 1;
+}
+
+int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md, unsigned int *size) {
+  (void)EVP_DigestFinal_ex(ctx, md, size);
+  EVP_MD_CTX_cleanup(ctx);
+  return 1;
+}
+
+int EVP_Digest(const void *data, size_t count, uint8_t *out_md,
+               unsigned int *out_size, const EVP_MD *type, ENGINE *impl) {
+  EVP_MD_CTX ctx;
+  int ret;
+
+  EVP_MD_CTX_init(&ctx);
+  ret = EVP_DigestInit_ex(&ctx, type, impl) &&
+        EVP_DigestUpdate(&ctx, data, count) &&
+        EVP_DigestFinal_ex(&ctx, out_md, out_size);
+  EVP_MD_CTX_cleanup(&ctx);
+
+  return ret;
+}
+
+
+const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) {
+  if (ctx == NULL) {
+    return NULL;
+  }
+  return ctx->digest;
+}
+
+size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx) {
+  return EVP_MD_size(EVP_MD_CTX_md(ctx));
+}
+
+size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx) {
+  return EVP_MD_block_size(EVP_MD_CTX_md(ctx));
+}
+
+int EVP_MD_CTX_type(const EVP_MD_CTX *ctx) {
+  return EVP_MD_type(EVP_MD_CTX_md(ctx));
+}
+
+int EVP_add_digest(const EVP_MD *digest) {
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c.grpc_back
new file mode 100644
index 0000000..a0b3bf5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digest.c.grpc_back	
@@ -0,0 +1,271 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/digest.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int EVP_MD_type(const EVP_MD *md) { return md->type; }
+
+uint32_t EVP_MD_flags(const EVP_MD *md) { return md->flags; }
+
+size_t EVP_MD_size(const EVP_MD *md) { return md->md_size; }
+
+size_t EVP_MD_block_size(const EVP_MD *md) { return md->block_size; }
+
+
+void EVP_MD_CTX_init(EVP_MD_CTX *ctx) {
+  OPENSSL_memset(ctx, 0, sizeof(EVP_MD_CTX));
+}
+
+EVP_MD_CTX *EVP_MD_CTX_new(void) {
+  EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_MD_CTX));
+
+  if (ctx) {
+    EVP_MD_CTX_init(ctx);
+  }
+
+  return ctx;
+}
+
+EVP_MD_CTX *EVP_MD_CTX_create(void) { return EVP_MD_CTX_new(); }
+
+int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) {
+  OPENSSL_free(ctx->md_data);
+
+  assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+  if (ctx->pctx_ops) {
+    ctx->pctx_ops->free(ctx->pctx);
+  }
+
+  EVP_MD_CTX_init(ctx);
+
+  return 1;
+}
+
+void EVP_MD_CTX_free(EVP_MD_CTX *ctx) {
+  if (!ctx) {
+    return;
+  }
+
+  EVP_MD_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) { EVP_MD_CTX_free(ctx); }
+
+int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, uint8_t *out, size_t len) {
+  OPENSSL_PUT_ERROR(DIGEST, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+  return 0;
+}
+
+uint32_t EVP_MD_meth_get_flags(const EVP_MD *md) { return EVP_MD_flags(md); }
+
+int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+  // |in->digest| may be NULL if this is a signing |EVP_MD_CTX| for, e.g.,
+  // Ed25519 which does not hash with |EVP_MD_CTX|.
+  if (in == NULL || (in->pctx == NULL && in->digest == NULL)) {
+    OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_INPUT_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EVP_PKEY_CTX *pctx = NULL;
+  assert(in->pctx == NULL || in->pctx_ops != NULL);
+  if (in->pctx) {
+    pctx = in->pctx_ops->dup(in->pctx);
+    if (!pctx) {
+      OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  uint8_t *tmp_buf = NULL;
+  if (in->digest != NULL) {
+    if (out->digest != in->digest) {
+      assert(in->digest->ctx_size != 0);
+      tmp_buf = OPENSSL_malloc(in->digest->ctx_size);
+      if (tmp_buf == NULL) {
+        if (pctx) {
+          in->pctx_ops->free(pctx);
+        }
+        OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    } else {
+      // |md_data| will be the correct size in this case. It's removed from
+      // |out| so that |EVP_MD_CTX_cleanup| doesn't free it, and then it's
+      // reused.
+      tmp_buf = out->md_data;
+      out->md_data = NULL;
+    }
+  }
+
+  EVP_MD_CTX_cleanup(out);
+
+  out->digest = in->digest;
+  out->md_data = tmp_buf;
+  if (in->digest != NULL) {
+    OPENSSL_memcpy(out->md_data, in->md_data, in->digest->ctx_size);
+  }
+  out->pctx = pctx;
+  out->pctx_ops = in->pctx_ops;
+  assert(out->pctx == NULL || out->pctx_ops != NULL);
+
+  return 1;
+}
+
+int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+  EVP_MD_CTX_init(out);
+  return EVP_MD_CTX_copy_ex(out, in);
+}
+
+int EVP_MD_CTX_reset(EVP_MD_CTX *ctx) {
+  EVP_MD_CTX_cleanup(ctx);
+  EVP_MD_CTX_init(ctx);
+  return 1;
+}
+
+int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *engine) {
+  if (ctx->digest != type) {
+    assert(type->ctx_size != 0);
+    uint8_t *md_data = OPENSSL_malloc(type->ctx_size);
+    if (md_data == NULL) {
+      OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+
+    OPENSSL_free(ctx->md_data);
+    ctx->md_data = md_data;
+    ctx->digest = type;
+  }
+
+  assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+
+  ctx->digest->init(ctx);
+  return 1;
+}
+
+int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+  EVP_MD_CTX_init(ctx);
+  return EVP_DigestInit_ex(ctx, type, NULL);
+}
+
+int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+  ctx->digest->update(ctx, data, len);
+  return 1;
+}
+
+int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out, unsigned int *size) {
+  assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
+  ctx->digest->final(ctx, md_out);
+  if (size != NULL) {
+    *size = ctx->digest->md_size;
+  }
+  OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+  return 1;
+}
+
+int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md, unsigned int *size) {
+  (void)EVP_DigestFinal_ex(ctx, md, size);
+  EVP_MD_CTX_cleanup(ctx);
+  return 1;
+}
+
+int EVP_Digest(const void *data, size_t count, uint8_t *out_md,
+               unsigned int *out_size, const EVP_MD *type, ENGINE *impl) {
+  EVP_MD_CTX ctx;
+  int ret;
+
+  EVP_MD_CTX_init(&ctx);
+  ret = EVP_DigestInit_ex(&ctx, type, impl) &&
+        EVP_DigestUpdate(&ctx, data, count) &&
+        EVP_DigestFinal_ex(&ctx, out_md, out_size);
+  EVP_MD_CTX_cleanup(&ctx);
+
+  return ret;
+}
+
+
+const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) {
+  if (ctx == NULL) {
+    return NULL;
+  }
+  return ctx->digest;
+}
+
+size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx) {
+  return EVP_MD_size(EVP_MD_CTX_md(ctx));
+}
+
+size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx) {
+  return EVP_MD_block_size(EVP_MD_CTX_md(ctx));
+}
+
+int EVP_MD_CTX_type(const EVP_MD_CTX *ctx) {
+  return EVP_MD_type(EVP_MD_CTX_md(ctx));
+}
+
+int EVP_add_digest(const EVP_MD *digest) {
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c
new file mode 100644
index 0000000..bda7f78
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c	
@@ -0,0 +1,280 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/digest.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/md4.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/sha.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+#if defined(NDEBUG)
+#define CHECK(x) (void) (x)
+#else
+#define CHECK(x) assert(x)
+#endif
+
+
+static void md4_init(EVP_MD_CTX *ctx) {
+  CHECK(MD4_Init(ctx->md_data));
+}
+
+static void md4_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(MD4_Update(ctx->md_data, data, count));
+}
+
+static void md4_final(EVP_MD_CTX *ctx, uint8_t *out) {
+  CHECK(MD4_Final(out, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md4) {
+  out->type = NID_md4;
+  out->md_size = MD4_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md4_init;
+  out->update = md4_update;
+  out->final = md4_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD4_CTX);
+}
+
+
+static void md5_init(EVP_MD_CTX *ctx) {
+  CHECK(MD5_Init(ctx->md_data));
+}
+
+static void md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(MD5_Update(ctx->md_data, data, count));
+}
+
+static void md5_final(EVP_MD_CTX *ctx, uint8_t *out) {
+  CHECK(MD5_Final(out, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5) {
+  out->type = NID_md5;
+  out->md_size = MD5_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md5_init;
+  out->update = md5_update;
+  out->final = md5_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD5_CTX);
+}
+
+
+static void sha1_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA1_Init(ctx->md_data));
+}
+
+static void sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA1_Update(ctx->md_data, data, count));
+}
+
+static void sha1_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA1_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha1) {
+  out->type = NID_sha1;
+  out->md_size = SHA_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha1_init;
+  out->update = sha1_update;
+  out->final = sha1_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA_CTX);
+}
+
+
+static void sha224_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA224_Init(ctx->md_data));
+}
+
+static void sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA224_Update(ctx->md_data, data, count));
+}
+
+static void sha224_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA224_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha224) {
+  out->type = NID_sha224;
+  out->md_size = SHA224_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha224_init;
+  out->update = sha224_update;
+  out->final = sha224_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA256_CTX);
+}
+
+
+static void sha256_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA256_Init(ctx->md_data));
+}
+
+static void sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA256_Update(ctx->md_data, data, count));
+}
+
+static void sha256_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA256_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha256) {
+  out->type = NID_sha256;
+  out->md_size = SHA256_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha256_init;
+  out->update = sha256_update;
+  out->final = sha256_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA256_CTX);
+}
+
+
+static void sha384_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA384_Init(ctx->md_data));
+}
+
+static void sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA384_Update(ctx->md_data, data, count));
+}
+
+static void sha384_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA384_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha384) {
+  out->type = NID_sha384;
+  out->md_size = SHA384_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha384_init;
+  out->update = sha384_update;
+  out->final = sha384_final;
+  out->block_size = 128;
+  out->ctx_size = sizeof(SHA512_CTX);
+}
+
+
+static void sha512_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA512_Init(ctx->md_data));
+}
+
+static void sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA512_Update(ctx->md_data, data, count));
+}
+
+static void sha512_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA512_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha512) {
+  out->type = NID_sha512;
+  out->md_size = SHA512_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha512_init;
+  out->update = sha512_update;
+  out->final = sha512_final;
+  out->block_size = 128;
+  out->ctx_size = sizeof(SHA512_CTX);
+}
+
+
+typedef struct {
+  MD5_CTX md5;
+  SHA_CTX sha1;
+} MD5_SHA1_CTX;
+
+static void md5_sha1_init(EVP_MD_CTX *md_ctx) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Init(&ctx->md5) && SHA1_Init(&ctx->sha1));
+}
+
+static void md5_sha1_update(EVP_MD_CTX *md_ctx, const void *data,
+                            size_t count) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Update(&ctx->md5, data, count) &&
+        SHA1_Update(&ctx->sha1, data, count));
+}
+
+static void md5_sha1_final(EVP_MD_CTX *md_ctx, uint8_t *out) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Final(out, &ctx->md5) &&
+        SHA1_Final(out + MD5_DIGEST_LENGTH, &ctx->sha1));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5_sha1) {
+  out->type = NID_md5_sha1;
+  out->md_size = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md5_sha1_init;
+  out->update = md5_sha1_update;
+  out->final = md5_sha1_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD5_SHA1_CTX);
+}
+
+#undef CHECK
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c.grpc_back
new file mode 100644
index 0000000..f2fa349
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/digests.c.grpc_back	
@@ -0,0 +1,280 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/digest.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/md4.h>
+#include <openssl/md5.h>
+#include <openssl/nid.h>
+#include <openssl/sha.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+#if defined(NDEBUG)
+#define CHECK(x) (void) (x)
+#else
+#define CHECK(x) assert(x)
+#endif
+
+
+static void md4_init(EVP_MD_CTX *ctx) {
+  CHECK(MD4_Init(ctx->md_data));
+}
+
+static void md4_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(MD4_Update(ctx->md_data, data, count));
+}
+
+static void md4_final(EVP_MD_CTX *ctx, uint8_t *out) {
+  CHECK(MD4_Final(out, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md4) {
+  out->type = NID_md4;
+  out->md_size = MD4_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md4_init;
+  out->update = md4_update;
+  out->final = md4_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD4_CTX);
+}
+
+
+static void md5_init(EVP_MD_CTX *ctx) {
+  CHECK(MD5_Init(ctx->md_data));
+}
+
+static void md5_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(MD5_Update(ctx->md_data, data, count));
+}
+
+static void md5_final(EVP_MD_CTX *ctx, uint8_t *out) {
+  CHECK(MD5_Final(out, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5) {
+  out->type = NID_md5;
+  out->md_size = MD5_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md5_init;
+  out->update = md5_update;
+  out->final = md5_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD5_CTX);
+}
+
+
+static void sha1_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA1_Init(ctx->md_data));
+}
+
+static void sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA1_Update(ctx->md_data, data, count));
+}
+
+static void sha1_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA1_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha1) {
+  out->type = NID_sha1;
+  out->md_size = SHA_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha1_init;
+  out->update = sha1_update;
+  out->final = sha1_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA_CTX);
+}
+
+
+static void sha224_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA224_Init(ctx->md_data));
+}
+
+static void sha224_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA224_Update(ctx->md_data, data, count));
+}
+
+static void sha224_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA224_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha224) {
+  out->type = NID_sha224;
+  out->md_size = SHA224_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha224_init;
+  out->update = sha224_update;
+  out->final = sha224_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA256_CTX);
+}
+
+
+static void sha256_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA256_Init(ctx->md_data));
+}
+
+static void sha256_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA256_Update(ctx->md_data, data, count));
+}
+
+static void sha256_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA256_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha256) {
+  out->type = NID_sha256;
+  out->md_size = SHA256_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha256_init;
+  out->update = sha256_update;
+  out->final = sha256_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(SHA256_CTX);
+}
+
+
+static void sha384_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA384_Init(ctx->md_data));
+}
+
+static void sha384_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA384_Update(ctx->md_data, data, count));
+}
+
+static void sha384_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA384_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha384) {
+  out->type = NID_sha384;
+  out->md_size = SHA384_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha384_init;
+  out->update = sha384_update;
+  out->final = sha384_final;
+  out->block_size = 128;
+  out->ctx_size = sizeof(SHA512_CTX);
+}
+
+
+static void sha512_init(EVP_MD_CTX *ctx) {
+  CHECK(SHA512_Init(ctx->md_data));
+}
+
+static void sha512_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+  CHECK(SHA512_Update(ctx->md_data, data, count));
+}
+
+static void sha512_final(EVP_MD_CTX *ctx, uint8_t *md) {
+  CHECK(SHA512_Final(md, ctx->md_data));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_sha512) {
+  out->type = NID_sha512;
+  out->md_size = SHA512_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = sha512_init;
+  out->update = sha512_update;
+  out->final = sha512_final;
+  out->block_size = 128;
+  out->ctx_size = sizeof(SHA512_CTX);
+}
+
+
+typedef struct {
+  MD5_CTX md5;
+  SHA_CTX sha1;
+} MD5_SHA1_CTX;
+
+static void md5_sha1_init(EVP_MD_CTX *md_ctx) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Init(&ctx->md5) && SHA1_Init(&ctx->sha1));
+}
+
+static void md5_sha1_update(EVP_MD_CTX *md_ctx, const void *data,
+                            size_t count) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Update(&ctx->md5, data, count) &&
+        SHA1_Update(&ctx->sha1, data, count));
+}
+
+static void md5_sha1_final(EVP_MD_CTX *md_ctx, uint8_t *out) {
+  MD5_SHA1_CTX *ctx = md_ctx->md_data;
+  CHECK(MD5_Final(out, &ctx->md5) &&
+        SHA1_Final(out + MD5_DIGEST_LENGTH, &ctx->sha1));
+}
+
+DEFINE_METHOD_FUNCTION(EVP_MD, EVP_md5_sha1) {
+  out->type = NID_md5_sha1;
+  out->md_size = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH;
+  out->flags = 0;
+  out->init = md5_sha1_init;
+  out->update = md5_sha1_update;
+  out->final = md5_sha1_final;
+  out->block_size = 64;
+  out->ctx_size = sizeof(MD5_SHA1_CTX);
+}
+
+#undef CHECK
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h
new file mode 100644
index 0000000..ebac9ab
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h	
@@ -0,0 +1,112 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DIGEST_INTERNAL_H
+#define OPENSSL_HEADER_DIGEST_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+struct env_md_st {
+  // type contains a NID identifing the digest function. (For example,
+  // NID_md5.)
+  int type;
+
+  // md_size contains the size, in bytes, of the resulting digest.
+  unsigned md_size;
+
+  // flags contains the OR of |EVP_MD_FLAG_*| values.
+  uint32_t flags;
+
+  // init initialises the state in |ctx->md_data|.
+  void (*init)(EVP_MD_CTX *ctx);
+
+  // update hashes |len| bytes of |data| into the state in |ctx->md_data|.
+  void (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
+
+  // final completes the hash and writes |md_size| bytes of digest to |out|.
+  void (*final)(EVP_MD_CTX *ctx, uint8_t *out);
+
+  // block_size contains the hash's native block size.
+  unsigned block_size;
+
+  // ctx_size contains the size, in bytes, of the state of the hash function.
+  unsigned ctx_size;
+};
+
+// evp_md_pctx_ops contains function pointers to allow the |pctx| member of
+// |EVP_MD_CTX| to be manipulated without breaking layering by calling EVP
+// functions.
+struct evp_md_pctx_ops {
+  // free is called when an |EVP_MD_CTX| is being freed and the |pctx| also
+  // needs to be freed.
+  void (*free) (EVP_PKEY_CTX *pctx);
+
+  // dup is called when an |EVP_MD_CTX| is copied and so the |pctx| also needs
+  // to be copied.
+  EVP_PKEY_CTX* (*dup) (EVP_PKEY_CTX *pctx);
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DIGEST_INTERNAL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h.grpc_back
new file mode 100644
index 0000000..2d06ed0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/internal.h.grpc_back	
@@ -0,0 +1,112 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DIGEST_INTERNAL_H
+#define OPENSSL_HEADER_DIGEST_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+struct env_md_st {
+  // type contains a NID identifing the digest function. (For example,
+  // NID_md5.)
+  int type;
+
+  // md_size contains the size, in bytes, of the resulting digest.
+  unsigned md_size;
+
+  // flags contains the OR of |EVP_MD_FLAG_*| values.
+  uint32_t flags;
+
+  // init initialises the state in |ctx->md_data|.
+  void (*init)(EVP_MD_CTX *ctx);
+
+  // update hashes |len| bytes of |data| into the state in |ctx->md_data|.
+  void (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
+
+  // final completes the hash and writes |md_size| bytes of digest to |out|.
+  void (*final)(EVP_MD_CTX *ctx, uint8_t *out);
+
+  // block_size contains the hash's native block size.
+  unsigned block_size;
+
+  // ctx_size contains the size, in bytes, of the state of the hash function.
+  unsigned ctx_size;
+};
+
+// evp_md_pctx_ops contains function pointers to allow the |pctx| member of
+// |EVP_MD_CTX| to be manipulated without breaking layering by calling EVP
+// functions.
+struct evp_md_pctx_ops {
+  // free is called when an |EVP_MD_CTX| is being freed and the |pctx| also
+  // needs to be freed.
+  void (*free) (EVP_PKEY_CTX *pctx);
+
+  // dup is called when an |EVP_MD_CTX| is copied and so the |pctx| also needs
+  // to be copied.
+  EVP_PKEY_CTX* (*dup) (EVP_PKEY_CTX *pctx);
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DIGEST_INTERNAL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h
new file mode 100644
index 0000000..fc325d9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h	
@@ -0,0 +1,268 @@
+/* ====================================================================
+ * Copyright (c) 1999-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/base.h>
+
+#include <assert.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// This is a generic 32-bit "collector" for message digest algorithms. It
+// collects input character stream into chunks of 32-bit values and invokes the
+// block function that performs the actual hash calculations. To make use of
+// this mechanism, the following macros must be defined before including
+// md32_common.h.
+//
+// One of |DATA_ORDER_IS_BIG_ENDIAN| or |DATA_ORDER_IS_LITTLE_ENDIAN| must be
+// defined to specify the byte order of the input stream.
+//
+// |HASH_CBLOCK| must be defined as the integer block size, in bytes.
+//
+// |HASH_CTX| must be defined as the name of the context structure, which must
+// have at least the following members:
+//
+//     typedef struct <name>_state_st {
+//       uint32_t h[<chaining length> / sizeof(uint32_t)];
+//       uint32_t Nl, Nh;
+//       uint8_t data[HASH_CBLOCK];
+//       unsigned num;
+//       ...
+//     } <NAME>_CTX;
+//
+// <chaining length> is the output length of the hash in bytes, before
+// any truncation (e.g. 64 for SHA-224 and SHA-256, 128 for SHA-384 and
+// SHA-512).
+//
+// |HASH_UPDATE| must be defined as the name of the "Update" function to
+// generate.
+//
+// |HASH_TRANSFORM| must be defined as the  the name of the "Transform"
+// function to generate.
+//
+// |HASH_FINAL| must be defined as the name of "Final" function to generate.
+//
+// |HASH_BLOCK_DATA_ORDER| must be defined as the name of the "Block" function.
+// That function must be implemented manually. It must be capable of operating
+// on *unaligned* input data in its original (data) byte order. It must have
+// this signature:
+//
+//     void HASH_BLOCK_DATA_ORDER(uint32_t *state, const uint8_t *data,
+//                                size_t num);
+//
+// It must update the hash state |state| with |num| blocks of data from |data|,
+// where each block is |HASH_CBLOCK| bytes; i.e. |data| points to a array of
+// |HASH_CBLOCK * num| bytes. |state| points to the |h| member of a |HASH_CTX|,
+// and so will have |<chaining length> / sizeof(uint32_t)| elements.
+//
+// |HASH_MAKE_STRING(c, s)| must be defined as a block statement that converts
+// the hash state |c->h| into the output byte order, storing the result in |s|.
+
+#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+#error "DATA_ORDER must be defined!"
+#endif
+
+#ifndef HASH_CBLOCK
+#error "HASH_CBLOCK must be defined!"
+#endif
+#ifndef HASH_CTX
+#error "HASH_CTX must be defined!"
+#endif
+
+#ifndef HASH_UPDATE
+#error "HASH_UPDATE must be defined!"
+#endif
+#ifndef HASH_TRANSFORM
+#error "HASH_TRANSFORM must be defined!"
+#endif
+#ifndef HASH_FINAL
+#error "HASH_FINAL must be defined!"
+#endif
+
+#ifndef HASH_BLOCK_DATA_ORDER
+#error "HASH_BLOCK_DATA_ORDER must be defined!"
+#endif
+
+#ifndef HASH_MAKE_STRING
+#error "HASH_MAKE_STRING must be defined!"
+#endif
+
+#if defined(DATA_ORDER_IS_BIG_ENDIAN)
+
+#define HOST_c2l(c, l)                     \
+  do {                                     \
+    (l) = (((uint32_t)(*((c)++))) << 24);  \
+    (l) |= (((uint32_t)(*((c)++))) << 16); \
+    (l) |= (((uint32_t)(*((c)++))) << 8);  \
+    (l) |= (((uint32_t)(*((c)++))));       \
+  } while (0)
+
+#define HOST_l2c(l, c)                        \
+  do {                                        \
+    *((c)++) = (uint8_t)(((l) >> 24) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 16) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 8) & 0xff);  \
+    *((c)++) = (uint8_t)(((l)) & 0xff);       \
+  } while (0)
+
+#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+
+#define HOST_c2l(c, l)                     \
+  do {                                     \
+    (l) = (((uint32_t)(*((c)++))));        \
+    (l) |= (((uint32_t)(*((c)++))) << 8);  \
+    (l) |= (((uint32_t)(*((c)++))) << 16); \
+    (l) |= (((uint32_t)(*((c)++))) << 24); \
+  } while (0)
+
+#define HOST_l2c(l, c)                        \
+  do {                                        \
+    *((c)++) = (uint8_t)(((l)) & 0xff);       \
+    *((c)++) = (uint8_t)(((l) >> 8) & 0xff);  \
+    *((c)++) = (uint8_t)(((l) >> 16) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 24) & 0xff); \
+  } while (0)
+
+#endif  // DATA_ORDER
+
+int HASH_UPDATE(HASH_CTX *c, const void *data_, size_t len) {
+  const uint8_t *data = data_;
+
+  if (len == 0) {
+    return 1;
+  }
+
+  uint32_t l = c->Nl + (((uint32_t)len) << 3);
+  if (l < c->Nl) {
+    // Handle carries.
+    c->Nh++;
+  }
+  c->Nh += (uint32_t)(len >> 29);
+  c->Nl = l;
+
+  size_t n = c->num;
+  if (n != 0) {
+    if (len >= HASH_CBLOCK || len + n >= HASH_CBLOCK) {
+      OPENSSL_memcpy(c->data + n, data, HASH_CBLOCK - n);
+      HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+      n = HASH_CBLOCK - n;
+      data += n;
+      len -= n;
+      c->num = 0;
+      // Keep |c->data| zeroed when unused.
+      OPENSSL_memset(c->data, 0, HASH_CBLOCK);
+    } else {
+      OPENSSL_memcpy(c->data + n, data, len);
+      c->num += (unsigned)len;
+      return 1;
+    }
+  }
+
+  n = len / HASH_CBLOCK;
+  if (n > 0) {
+    HASH_BLOCK_DATA_ORDER(c->h, data, n);
+    n *= HASH_CBLOCK;
+    data += n;
+    len -= n;
+  }
+
+  if (len != 0) {
+    c->num = (unsigned)len;
+    OPENSSL_memcpy(c->data, data, len);
+  }
+  return 1;
+}
+
+
+void HASH_TRANSFORM(HASH_CTX *c, const uint8_t data[HASH_CBLOCK]) {
+  HASH_BLOCK_DATA_ORDER(c->h, data, 1);
+}
+
+
+int HASH_FINAL(uint8_t out[HASH_DIGEST_LENGTH], HASH_CTX *c) {
+  // |c->data| always has room for at least one byte. A full block would have
+  // been consumed.
+  size_t n = c->num;
+  assert(n < HASH_CBLOCK);
+  c->data[n] = 0x80;
+  n++;
+
+  // Fill the block with zeros if there isn't room for a 64-bit length.
+  if (n > (HASH_CBLOCK - 8)) {
+    OPENSSL_memset(c->data + n, 0, HASH_CBLOCK - n);
+    n = 0;
+    HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+  }
+  OPENSSL_memset(c->data + n, 0, HASH_CBLOCK - 8 - n);
+
+  // Append a 64-bit length to the block and process it.
+  uint8_t *p = c->data + HASH_CBLOCK - 8;
+#if defined(DATA_ORDER_IS_BIG_ENDIAN)
+  HOST_l2c(c->Nh, p);
+  HOST_l2c(c->Nl, p);
+#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+  HOST_l2c(c->Nl, p);
+  HOST_l2c(c->Nh, p);
+#endif
+  assert(p == c->data + HASH_CBLOCK);
+  HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+  c->num = 0;
+  OPENSSL_memset(c->data, 0, HASH_CBLOCK);
+
+  HASH_MAKE_STRING(c, out);
+  return 1;
+}
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h.grpc_back
new file mode 100644
index 0000000..07d39d9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/digest/md32_common.h.grpc_back	
@@ -0,0 +1,268 @@
+/* ====================================================================
+ * Copyright (c) 1999-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/base.h>
+
+#include <assert.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// This is a generic 32-bit "collector" for message digest algorithms. It
+// collects input character stream into chunks of 32-bit values and invokes the
+// block function that performs the actual hash calculations. To make use of
+// this mechanism, the following macros must be defined before including
+// md32_common.h.
+//
+// One of |DATA_ORDER_IS_BIG_ENDIAN| or |DATA_ORDER_IS_LITTLE_ENDIAN| must be
+// defined to specify the byte order of the input stream.
+//
+// |HASH_CBLOCK| must be defined as the integer block size, in bytes.
+//
+// |HASH_CTX| must be defined as the name of the context structure, which must
+// have at least the following members:
+//
+//     typedef struct <name>_state_st {
+//       uint32_t h[<chaining length> / sizeof(uint32_t)];
+//       uint32_t Nl, Nh;
+//       uint8_t data[HASH_CBLOCK];
+//       unsigned num;
+//       ...
+//     } <NAME>_CTX;
+//
+// <chaining length> is the output length of the hash in bytes, before
+// any truncation (e.g. 64 for SHA-224 and SHA-256, 128 for SHA-384 and
+// SHA-512).
+//
+// |HASH_UPDATE| must be defined as the name of the "Update" function to
+// generate.
+//
+// |HASH_TRANSFORM| must be defined as the  the name of the "Transform"
+// function to generate.
+//
+// |HASH_FINAL| must be defined as the name of "Final" function to generate.
+//
+// |HASH_BLOCK_DATA_ORDER| must be defined as the name of the "Block" function.
+// That function must be implemented manually. It must be capable of operating
+// on *unaligned* input data in its original (data) byte order. It must have
+// this signature:
+//
+//     void HASH_BLOCK_DATA_ORDER(uint32_t *state, const uint8_t *data,
+//                                size_t num);
+//
+// It must update the hash state |state| with |num| blocks of data from |data|,
+// where each block is |HASH_CBLOCK| bytes; i.e. |data| points to a array of
+// |HASH_CBLOCK * num| bytes. |state| points to the |h| member of a |HASH_CTX|,
+// and so will have |<chaining length> / sizeof(uint32_t)| elements.
+//
+// |HASH_MAKE_STRING(c, s)| must be defined as a block statement that converts
+// the hash state |c->h| into the output byte order, storing the result in |s|.
+
+#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+#error "DATA_ORDER must be defined!"
+#endif
+
+#ifndef HASH_CBLOCK
+#error "HASH_CBLOCK must be defined!"
+#endif
+#ifndef HASH_CTX
+#error "HASH_CTX must be defined!"
+#endif
+
+#ifndef HASH_UPDATE
+#error "HASH_UPDATE must be defined!"
+#endif
+#ifndef HASH_TRANSFORM
+#error "HASH_TRANSFORM must be defined!"
+#endif
+#ifndef HASH_FINAL
+#error "HASH_FINAL must be defined!"
+#endif
+
+#ifndef HASH_BLOCK_DATA_ORDER
+#error "HASH_BLOCK_DATA_ORDER must be defined!"
+#endif
+
+#ifndef HASH_MAKE_STRING
+#error "HASH_MAKE_STRING must be defined!"
+#endif
+
+#if defined(DATA_ORDER_IS_BIG_ENDIAN)
+
+#define HOST_c2l(c, l)                     \
+  do {                                     \
+    (l) = (((uint32_t)(*((c)++))) << 24);  \
+    (l) |= (((uint32_t)(*((c)++))) << 16); \
+    (l) |= (((uint32_t)(*((c)++))) << 8);  \
+    (l) |= (((uint32_t)(*((c)++))));       \
+  } while (0)
+
+#define HOST_l2c(l, c)                        \
+  do {                                        \
+    *((c)++) = (uint8_t)(((l) >> 24) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 16) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 8) & 0xff);  \
+    *((c)++) = (uint8_t)(((l)) & 0xff);       \
+  } while (0)
+
+#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+
+#define HOST_c2l(c, l)                     \
+  do {                                     \
+    (l) = (((uint32_t)(*((c)++))));        \
+    (l) |= (((uint32_t)(*((c)++))) << 8);  \
+    (l) |= (((uint32_t)(*((c)++))) << 16); \
+    (l) |= (((uint32_t)(*((c)++))) << 24); \
+  } while (0)
+
+#define HOST_l2c(l, c)                        \
+  do {                                        \
+    *((c)++) = (uint8_t)(((l)) & 0xff);       \
+    *((c)++) = (uint8_t)(((l) >> 8) & 0xff);  \
+    *((c)++) = (uint8_t)(((l) >> 16) & 0xff); \
+    *((c)++) = (uint8_t)(((l) >> 24) & 0xff); \
+  } while (0)
+
+#endif  // DATA_ORDER
+
+int HASH_UPDATE(HASH_CTX *c, const void *data_, size_t len) {
+  const uint8_t *data = data_;
+
+  if (len == 0) {
+    return 1;
+  }
+
+  uint32_t l = c->Nl + (((uint32_t)len) << 3);
+  if (l < c->Nl) {
+    // Handle carries.
+    c->Nh++;
+  }
+  c->Nh += (uint32_t)(len >> 29);
+  c->Nl = l;
+
+  size_t n = c->num;
+  if (n != 0) {
+    if (len >= HASH_CBLOCK || len + n >= HASH_CBLOCK) {
+      OPENSSL_memcpy(c->data + n, data, HASH_CBLOCK - n);
+      HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+      n = HASH_CBLOCK - n;
+      data += n;
+      len -= n;
+      c->num = 0;
+      // Keep |c->data| zeroed when unused.
+      OPENSSL_memset(c->data, 0, HASH_CBLOCK);
+    } else {
+      OPENSSL_memcpy(c->data + n, data, len);
+      c->num += (unsigned)len;
+      return 1;
+    }
+  }
+
+  n = len / HASH_CBLOCK;
+  if (n > 0) {
+    HASH_BLOCK_DATA_ORDER(c->h, data, n);
+    n *= HASH_CBLOCK;
+    data += n;
+    len -= n;
+  }
+
+  if (len != 0) {
+    c->num = (unsigned)len;
+    OPENSSL_memcpy(c->data, data, len);
+  }
+  return 1;
+}
+
+
+void HASH_TRANSFORM(HASH_CTX *c, const uint8_t data[HASH_CBLOCK]) {
+  HASH_BLOCK_DATA_ORDER(c->h, data, 1);
+}
+
+
+int HASH_FINAL(uint8_t out[HASH_DIGEST_LENGTH], HASH_CTX *c) {
+  // |c->data| always has room for at least one byte. A full block would have
+  // been consumed.
+  size_t n = c->num;
+  assert(n < HASH_CBLOCK);
+  c->data[n] = 0x80;
+  n++;
+
+  // Fill the block with zeros if there isn't room for a 64-bit length.
+  if (n > (HASH_CBLOCK - 8)) {
+    OPENSSL_memset(c->data + n, 0, HASH_CBLOCK - n);
+    n = 0;
+    HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+  }
+  OPENSSL_memset(c->data + n, 0, HASH_CBLOCK - 8 - n);
+
+  // Append a 64-bit length to the block and process it.
+  uint8_t *p = c->data + HASH_CBLOCK - 8;
+#if defined(DATA_ORDER_IS_BIG_ENDIAN)
+  HOST_l2c(c->Nh, p);
+  HOST_l2c(c->Nl, p);
+#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
+  HOST_l2c(c->Nl, p);
+  HOST_l2c(c->Nh, p);
+#endif
+  assert(p == c->data + HASH_CBLOCK);
+  HASH_BLOCK_DATA_ORDER(c->h, c->data, 1);
+  c->num = 0;
+  OPENSSL_memset(c->data, 0, HASH_CBLOCK);
+
+  HASH_MAKE_STRING(c, out);
+  return 1;
+}
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c
new file mode 100644
index 0000000..9ccdb33
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c	
@@ -0,0 +1,1080 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../bn/internal.h"
+#include "../delocate.h"
+
+
+static void ec_point_free(EC_POINT *point, int free_group);
+
+static const uint8_t kP224Params[6 * 28] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFE,
+    // b
+    0xB4, 0x05, 0x0A, 0x85, 0x0C, 0x04, 0xB3, 0xAB, 0xF5, 0x41, 0x32, 0x56,
+    0x50, 0x44, 0xB0, 0xB7, 0xD7, 0xBF, 0xD8, 0xBA, 0x27, 0x0B, 0x39, 0x43,
+    0x23, 0x55, 0xFF, 0xB4,
+    // x
+    0xB7, 0x0E, 0x0C, 0xBD, 0x6B, 0xB4, 0xBF, 0x7F, 0x32, 0x13, 0x90, 0xB9,
+    0x4A, 0x03, 0xC1, 0xD3, 0x56, 0xC2, 0x11, 0x22, 0x34, 0x32, 0x80, 0xD6,
+    0x11, 0x5C, 0x1D, 0x21,
+    // y
+    0xbd, 0x37, 0x63, 0x88, 0xb5, 0xf7, 0x23, 0xfb, 0x4c, 0x22, 0xdf, 0xe6,
+    0xcd, 0x43, 0x75, 0xa0, 0x5a, 0x07, 0x47, 0x64, 0x44, 0xd5, 0x81, 0x99,
+    0x85, 0x00, 0x7e, 0x34,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0x16, 0xA2, 0xE0, 0xB8, 0xF0, 0x3E, 0x13, 0xDD, 0x29, 0x45,
+    0x5C, 0x5C, 0x2A, 0x3D,
+};
+
+static const uint8_t kP256Params[6 * 32] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0x5A, 0xC6, 0x35, 0xD8, 0xAA, 0x3A, 0x93, 0xE7, 0xB3, 0xEB, 0xBD, 0x55,
+    0x76, 0x98, 0x86, 0xBC, 0x65, 0x1D, 0x06, 0xB0, 0xCC, 0x53, 0xB0, 0xF6,
+    0x3B, 0xCE, 0x3C, 0x3E, 0x27, 0xD2, 0x60, 0x4B,
+    // x
+    0x6B, 0x17, 0xD1, 0xF2, 0xE1, 0x2C, 0x42, 0x47, 0xF8, 0xBC, 0xE6, 0xE5,
+    0x63, 0xA4, 0x40, 0xF2, 0x77, 0x03, 0x7D, 0x81, 0x2D, 0xEB, 0x33, 0xA0,
+    0xF4, 0xA1, 0x39, 0x45, 0xD8, 0x98, 0xC2, 0x96,
+    // y
+    0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a,
+    0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce,
+    0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xBC, 0xE6, 0xFA, 0xAD, 0xA7, 0x17, 0x9E, 0x84,
+    0xF3, 0xB9, 0xCA, 0xC2, 0xFC, 0x63, 0x25, 0x51,
+};
+
+static const uint8_t kP384Params[6 * 48] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0xB3, 0x31, 0x2F, 0xA7, 0xE2, 0x3E, 0xE7, 0xE4, 0x98, 0x8E, 0x05, 0x6B,
+    0xE3, 0xF8, 0x2D, 0x19, 0x18, 0x1D, 0x9C, 0x6E, 0xFE, 0x81, 0x41, 0x12,
+    0x03, 0x14, 0x08, 0x8F, 0x50, 0x13, 0x87, 0x5A, 0xC6, 0x56, 0x39, 0x8D,
+    0x8A, 0x2E, 0xD1, 0x9D, 0x2A, 0x85, 0xC8, 0xED, 0xD3, 0xEC, 0x2A, 0xEF,
+    // x
+    0xAA, 0x87, 0xCA, 0x22, 0xBE, 0x8B, 0x05, 0x37, 0x8E, 0xB1, 0xC7, 0x1E,
+    0xF3, 0x20, 0xAD, 0x74, 0x6E, 0x1D, 0x3B, 0x62, 0x8B, 0xA7, 0x9B, 0x98,
+    0x59, 0xF7, 0x41, 0xE0, 0x82, 0x54, 0x2A, 0x38, 0x55, 0x02, 0xF2, 0x5D,
+    0xBF, 0x55, 0x29, 0x6C, 0x3A, 0x54, 0x5E, 0x38, 0x72, 0x76, 0x0A, 0xB7,
+    // y
+    0x36, 0x17, 0xde, 0x4a, 0x96, 0x26, 0x2c, 0x6f, 0x5d, 0x9e, 0x98, 0xbf,
+    0x92, 0x92, 0xdc, 0x29, 0xf8, 0xf4, 0x1d, 0xbd, 0x28, 0x9a, 0x14, 0x7c,
+    0xe9, 0xda, 0x31, 0x13, 0xb5, 0xf0, 0xb8, 0xc0, 0x0a, 0x60, 0xb1, 0xce,
+    0x1d, 0x7e, 0x81, 0x9d, 0x7a, 0x43, 0x1d, 0x7c, 0x90, 0xea, 0x0e, 0x5f,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xC7, 0x63, 0x4D, 0x81, 0xF4, 0x37, 0x2D, 0xDF, 0x58, 0x1A, 0x0D, 0xB2,
+    0x48, 0xB0, 0xA7, 0x7A, 0xEC, 0xEC, 0x19, 0x6A, 0xCC, 0xC5, 0x29, 0x73,
+};
+
+static const uint8_t kP521Params[6 * 66] = {
+    // p
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0x00, 0x51, 0x95, 0x3E, 0xB9, 0x61, 0x8E, 0x1C, 0x9A, 0x1F, 0x92, 0x9A,
+    0x21, 0xA0, 0xB6, 0x85, 0x40, 0xEE, 0xA2, 0xDA, 0x72, 0x5B, 0x99, 0xB3,
+    0x15, 0xF3, 0xB8, 0xB4, 0x89, 0x91, 0x8E, 0xF1, 0x09, 0xE1, 0x56, 0x19,
+    0x39, 0x51, 0xEC, 0x7E, 0x93, 0x7B, 0x16, 0x52, 0xC0, 0xBD, 0x3B, 0xB1,
+    0xBF, 0x07, 0x35, 0x73, 0xDF, 0x88, 0x3D, 0x2C, 0x34, 0xF1, 0xEF, 0x45,
+    0x1F, 0xD4, 0x6B, 0x50, 0x3F, 0x00,
+    // x
+    0x00, 0xC6, 0x85, 0x8E, 0x06, 0xB7, 0x04, 0x04, 0xE9, 0xCD, 0x9E, 0x3E,
+    0xCB, 0x66, 0x23, 0x95, 0xB4, 0x42, 0x9C, 0x64, 0x81, 0x39, 0x05, 0x3F,
+    0xB5, 0x21, 0xF8, 0x28, 0xAF, 0x60, 0x6B, 0x4D, 0x3D, 0xBA, 0xA1, 0x4B,
+    0x5E, 0x77, 0xEF, 0xE7, 0x59, 0x28, 0xFE, 0x1D, 0xC1, 0x27, 0xA2, 0xFF,
+    0xA8, 0xDE, 0x33, 0x48, 0xB3, 0xC1, 0x85, 0x6A, 0x42, 0x9B, 0xF9, 0x7E,
+    0x7E, 0x31, 0xC2, 0xE5, 0xBD, 0x66,
+    // y
+    0x01, 0x18, 0x39, 0x29, 0x6a, 0x78, 0x9a, 0x3b, 0xc0, 0x04, 0x5c, 0x8a,
+    0x5f, 0xb4, 0x2c, 0x7d, 0x1b, 0xd9, 0x98, 0xf5, 0x44, 0x49, 0x57, 0x9b,
+    0x44, 0x68, 0x17, 0xaf, 0xbd, 0x17, 0x27, 0x3e, 0x66, 0x2c, 0x97, 0xee,
+    0x72, 0x99, 0x5e, 0xf4, 0x26, 0x40, 0xc5, 0x50, 0xb9, 0x01, 0x3f, 0xad,
+    0x07, 0x61, 0x35, 0x3c, 0x70, 0x86, 0xa2, 0x72, 0xc2, 0x40, 0x88, 0xbe,
+    0x94, 0x76, 0x9f, 0xd1, 0x66, 0x50,
+    // order
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFA, 0x51, 0x86,
+    0x87, 0x83, 0xBF, 0x2F, 0x96, 0x6B, 0x7F, 0xCC, 0x01, 0x48, 0xF7, 0x09,
+    0xA5, 0xD0, 0x3B, 0xB5, 0xC9, 0xB8, 0x89, 0x9C, 0x47, 0xAE, 0xBB, 0x6F,
+    0xB7, 0x1E, 0x91, 0x38, 0x64, 0x09,
+};
+
+DEFINE_METHOD_FUNCTION(struct built_in_curves, OPENSSL_built_in_curves) {
+  // 1.3.132.0.35
+  static const uint8_t kOIDP521[] = {0x2b, 0x81, 0x04, 0x00, 0x23};
+  out->curves[0].nid = NID_secp521r1;
+  out->curves[0].oid = kOIDP521;
+  out->curves[0].oid_len = sizeof(kOIDP521);
+  out->curves[0].comment = "NIST P-521";
+  out->curves[0].param_len = 66;
+  out->curves[0].params = kP521Params;
+  out->curves[0].method = EC_GFp_mont_method();
+
+  // 1.3.132.0.34
+  static const uint8_t kOIDP384[] = {0x2b, 0x81, 0x04, 0x00, 0x22};
+  out->curves[1].nid = NID_secp384r1;
+  out->curves[1].oid = kOIDP384;
+  out->curves[1].oid_len = sizeof(kOIDP384);
+  out->curves[1].comment = "NIST P-384";
+  out->curves[1].param_len = 48;
+  out->curves[1].params = kP384Params;
+  out->curves[1].method = EC_GFp_mont_method();
+
+  // 1.2.840.10045.3.1.7
+  static const uint8_t kOIDP256[] = {0x2a, 0x86, 0x48, 0xce,
+                                     0x3d, 0x03, 0x01, 0x07};
+  out->curves[2].nid = NID_X9_62_prime256v1;
+  out->curves[2].oid = kOIDP256;
+  out->curves[2].oid_len = sizeof(kOIDP256);
+  out->curves[2].comment = "NIST P-256";
+  out->curves[2].param_len = 32;
+  out->curves[2].params = kP256Params;
+  out->curves[2].method =
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+      EC_GFp_nistz256_method();
+#else
+      EC_GFp_nistp256_method();
+#endif
+
+  // 1.3.132.0.33
+  static const uint8_t kOIDP224[] = {0x2b, 0x81, 0x04, 0x00, 0x21};
+  out->curves[3].nid = NID_secp224r1;
+  out->curves[3].oid = kOIDP224;
+  out->curves[3].oid_len = sizeof(kOIDP224);
+  out->curves[3].comment = "NIST P-224";
+  out->curves[3].param_len = 28;
+  out->curves[3].params = kP224Params;
+  out->curves[3].method =
+#if defined(BORINGSSL_HAS_UINT128) && !defined(OPENSSL_SMALL)
+      EC_GFp_nistp224_method();
+#else
+      EC_GFp_mont_method();
+#endif
+}
+
+EC_GROUP *ec_group_new(const EC_METHOD *meth) {
+  EC_GROUP *ret;
+
+  if (meth == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_SLOT_FULL);
+    return NULL;
+  }
+
+  if (meth->group_init == 0) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return NULL;
+  }
+
+  ret = OPENSSL_malloc(sizeof(EC_GROUP));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(EC_GROUP));
+
+  ret->references = 1;
+  ret->meth = meth;
+  BN_init(&ret->order);
+
+  if (!meth->group_init(ret)) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+static void ec_group_set0_generator(EC_GROUP *group, EC_POINT *generator) {
+  assert(group->generator == NULL);
+  assert(group == generator->group);
+
+  // Avoid a reference cycle. |group->generator| does not maintain an owning
+  // pointer to |group|.
+  group->generator = generator;
+  int is_zero = CRYPTO_refcount_dec_and_test_zero(&group->references);
+
+  assert(!is_zero);
+  (void)is_zero;
+}
+
+EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
+                                 const BIGNUM *b, BN_CTX *ctx) {
+  if (BN_num_bytes(p) > EC_MAX_BYTES) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FIELD);
+    return NULL;
+  }
+
+  EC_GROUP *ret = ec_group_new(EC_GFp_mont_method());
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (ret->meth->group_set_curve == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    EC_GROUP_free(ret);
+    return NULL;
+  }
+  if (!ret->meth->group_set_curve(ret, p, a, b, ctx)) {
+    EC_GROUP_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
+                           const BIGNUM *order, const BIGNUM *cofactor) {
+  if (group->curve_name != NID_undef || group->generator != NULL ||
+      generator->group != group) {
+    // |EC_GROUP_set_generator| may only be used with |EC_GROUP|s returned by
+    // |EC_GROUP_new_curve_GFp| and may only used once on each group.
+    // |generator| must have been created from |EC_GROUP_new_curve_GFp|, not a
+    // copy, so that |generator->group->generator| is set correctly.
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (BN_num_bytes(order) > EC_MAX_BYTES) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  // Require a cofactor of one for custom curves, which implies prime order.
+  if (!BN_is_one(cofactor)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COFACTOR);
+    return 0;
+  }
+
+  // Require that p < 2×order. This simplifies some ECDSA operations.
+  //
+  // Note any curve which did not satisfy this must have been invalid or use a
+  // tiny prime (less than 17). See the proof in |field_element_to_scalar| in
+  // the ECDSA implementation.
+  int ret = 0;
+  EC_POINT *copy = NULL;
+  BIGNUM *tmp = BN_new();
+  if (tmp == NULL ||
+      !BN_lshift1(tmp, order)) {
+    goto err;
+  }
+  if (BN_cmp(tmp, &group->field) <= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    goto err;
+  }
+
+  copy = EC_POINT_new(group);
+  if (copy == NULL ||
+      !EC_POINT_copy(copy, generator) ||
+      !BN_copy(&group->order, order)) {
+    goto err;
+  }
+  // Store the order in minimal form, so it can be used with |BN_ULONG| arrays.
+  bn_set_minimal_width(&group->order);
+
+  BN_MONT_CTX_free(group->order_mont);
+  group->order_mont = BN_MONT_CTX_new_for_modulus(&group->order, NULL);
+  if (group->order_mont == NULL) {
+    goto err;
+  }
+
+  group->field_greater_than_order = BN_cmp(&group->field, &group->order) > 0;
+  if (group->field_greater_than_order) {
+    if (!BN_sub(tmp, &group->field, &group->order) ||
+        !bn_copy_words(group->field_minus_order.words, group->field.width,
+                       tmp)) {
+      goto err;
+    }
+  }
+
+  ec_group_set0_generator(group, copy);
+  copy = NULL;
+  ret = 1;
+
+err:
+  EC_POINT_free(copy);
+  BN_free(tmp);
+  return ret;
+}
+
+static EC_GROUP *ec_group_new_from_data(const struct built_in_curve *curve) {
+  EC_GROUP *group = NULL;
+  EC_POINT *P = NULL;
+  BIGNUM *p = NULL, *a = NULL, *b = NULL, *x = NULL, *y = NULL;
+  int ok = 0;
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  const unsigned param_len = curve->param_len;
+  const uint8_t *params = curve->params;
+
+  if (!(p = BN_bin2bn(params + 0 * param_len, param_len, NULL)) ||
+      !(a = BN_bin2bn(params + 1 * param_len, param_len, NULL)) ||
+      !(b = BN_bin2bn(params + 2 * param_len, param_len, NULL))) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  group = ec_group_new(curve->method);
+  if (group == NULL ||
+      !group->meth->group_set_curve(group, p, a, b, ctx)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+
+  if ((P = EC_POINT_new(group)) == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+
+  if (!(x = BN_bin2bn(params + 3 * param_len, param_len, NULL)) ||
+      !(y = BN_bin2bn(params + 4 * param_len, param_len, NULL))) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  if (!EC_POINT_set_affine_coordinates_GFp(group, P, x, y, ctx)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+  if (!BN_bin2bn(params + 5 * param_len, param_len, &group->order)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  group->field_greater_than_order = BN_cmp(&group->field, &group->order) > 0;
+  if (group->field_greater_than_order) {
+    if (!BN_sub(p, &group->field, &group->order) ||
+        !bn_copy_words(group->field_minus_order.words, group->field.width, p)) {
+      goto err;
+    }
+  }
+
+  group->order_mont = BN_MONT_CTX_new_for_modulus(&group->order, ctx);
+  if (group->order_mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ec_group_set0_generator(group, P);
+  P = NULL;
+  ok = 1;
+
+err:
+  if (!ok) {
+    EC_GROUP_free(group);
+    group = NULL;
+  }
+  EC_POINT_free(P);
+  BN_CTX_free(ctx);
+  BN_free(p);
+  BN_free(a);
+  BN_free(b);
+  BN_free(x);
+  BN_free(y);
+  return group;
+}
+
+// Built-in groups are allocated lazily and static once allocated.
+// TODO(davidben): Make these actually static. https://crbug.com/boringssl/20.
+struct built_in_groups_st {
+  EC_GROUP *groups[OPENSSL_NUM_BUILT_IN_CURVES];
+};
+DEFINE_BSS_GET(struct built_in_groups_st, built_in_groups)
+DEFINE_STATIC_MUTEX(built_in_groups_lock)
+
+EC_GROUP *EC_GROUP_new_by_curve_name(int nid) {
+  struct built_in_groups_st *groups = built_in_groups_bss_get();
+  EC_GROUP **group_ptr = NULL;
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  const struct built_in_curve *curve = NULL;
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    if (curves->curves[i].nid == nid) {
+      curve = &curves->curves[i];
+      group_ptr = &groups->groups[i];
+      break;
+    }
+  }
+
+  if (curve == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return NULL;
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(built_in_groups_lock_bss_get());
+  EC_GROUP *ret = *group_ptr;
+  CRYPTO_STATIC_MUTEX_unlock_read(built_in_groups_lock_bss_get());
+  if (ret != NULL) {
+    return ret;
+  }
+
+  ret = ec_group_new_from_data(curve);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  EC_GROUP *to_free = NULL;
+  CRYPTO_STATIC_MUTEX_lock_write(built_in_groups_lock_bss_get());
+  if (*group_ptr == NULL) {
+    *group_ptr = ret;
+    // Filling in |ret->curve_name| makes |EC_GROUP_free| and |EC_GROUP_dup|
+    // into no-ops. At this point, |ret| is considered static.
+    ret->curve_name = nid;
+  } else {
+    to_free = ret;
+    ret = *group_ptr;
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(built_in_groups_lock_bss_get());
+
+  EC_GROUP_free(to_free);
+  return ret;
+}
+
+void EC_GROUP_free(EC_GROUP *group) {
+  if (group == NULL ||
+      // Built-in curves are static.
+      group->curve_name != NID_undef ||
+      !CRYPTO_refcount_dec_and_test_zero(&group->references)) {
+    return;
+  }
+
+  if (group->meth->group_finish != NULL) {
+    group->meth->group_finish(group);
+  }
+
+  ec_point_free(group->generator, 0 /* don't free group */);
+  BN_free(&group->order);
+  BN_MONT_CTX_free(group->order_mont);
+
+  OPENSSL_free(group);
+}
+
+EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) {
+  if (a == NULL ||
+      // Built-in curves are static.
+      a->curve_name != NID_undef) {
+    return (EC_GROUP *)a;
+  }
+
+  // Groups are logically immutable (but for |EC_GROUP_set_generator| which must
+  // be called early on), so we simply take a reference.
+  EC_GROUP *group = (EC_GROUP *)a;
+  CRYPTO_refcount_inc(&group->references);
+  return group;
+}
+
+int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ignored) {
+  // Note this function returns 0 if equal and non-zero otherwise.
+  if (a == b) {
+    return 0;
+  }
+  if (a->curve_name != b->curve_name) {
+    return 1;
+  }
+  if (a->curve_name != NID_undef) {
+    // Built-in curves may be compared by curve name alone.
+    return 0;
+  }
+
+  // |a| and |b| are both custom curves. We compare the entire curve
+  // structure. If |a| or |b| is incomplete (due to legacy OpenSSL mistakes,
+  // custom curve construction is sadly done in two parts) but otherwise not the
+  // same object, we consider them always unequal.
+  return a->meth != b->meth ||
+         a->generator == NULL ||
+         b->generator == NULL ||
+         BN_cmp(&a->order, &b->order) != 0 ||
+         BN_cmp(&a->field, &b->field) != 0 ||
+         !ec_felem_equal(a, &a->a, &b->a) ||
+         !ec_felem_equal(a, &a->b, &b->b) ||
+         ec_GFp_simple_cmp(a, &a->generator->raw, &b->generator->raw) != 0;
+}
+
+const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) {
+  return group->generator;
+}
+
+const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group) {
+  assert(!BN_is_zero(&group->order));
+  return &group->order;
+}
+
+int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) {
+  if (BN_copy(order, EC_GROUP_get0_order(group)) == NULL) {
+    return 0;
+  }
+  return 1;
+}
+
+int EC_GROUP_order_bits(const EC_GROUP *group) {
+  return BN_num_bits(&group->order);
+}
+
+int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
+                          BN_CTX *ctx) {
+  // All |EC_GROUP|s have cofactor 1.
+  return BN_set_word(cofactor, 1);
+}
+
+int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *out_p, BIGNUM *out_a,
+                           BIGNUM *out_b, BN_CTX *ctx) {
+  return ec_GFp_simple_group_get_curve(group, out_p, out_a, out_b);
+}
+
+int EC_GROUP_get_curve_name(const EC_GROUP *group) { return group->curve_name; }
+
+unsigned EC_GROUP_get_degree(const EC_GROUP *group) {
+  return BN_num_bits(&group->field);
+}
+
+const char *EC_curve_nid2nist(int nid) {
+  switch (nid) {
+    case NID_secp224r1:
+      return "P-224";
+    case NID_X9_62_prime256v1:
+      return "P-256";
+    case NID_secp384r1:
+      return "P-384";
+    case NID_secp521r1:
+      return "P-521";
+  }
+  return NULL;
+}
+
+int EC_curve_nist2nid(const char *name) {
+  if (strcmp(name, "P-224") == 0) {
+    return NID_secp224r1;
+  }
+  if (strcmp(name, "P-256") == 0) {
+    return NID_X9_62_prime256v1;
+  }
+  if (strcmp(name, "P-384") == 0) {
+    return NID_secp384r1;
+  }
+  if (strcmp(name, "P-521") == 0) {
+    return NID_secp521r1;
+  }
+  return NID_undef;
+}
+
+EC_POINT *EC_POINT_new(const EC_GROUP *group) {
+  if (group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+
+  EC_POINT *ret = OPENSSL_malloc(sizeof *ret);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  ret->group = EC_GROUP_dup(group);
+  ec_GFp_simple_point_init(&ret->raw);
+  return ret;
+}
+
+static void ec_point_free(EC_POINT *point, int free_group) {
+  if (!point) {
+    return;
+  }
+  if (free_group) {
+    EC_GROUP_free(point->group);
+  }
+  OPENSSL_free(point);
+}
+
+void EC_POINT_free(EC_POINT *point) {
+  ec_point_free(point, 1 /* free group */);
+}
+
+void EC_POINT_clear_free(EC_POINT *point) { EC_POINT_free(point); }
+
+int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) {
+  if (EC_GROUP_cmp(dest->group, src->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  if (dest == src) {
+    return 1;
+  }
+  ec_GFp_simple_point_copy(&dest->raw, &src->raw);
+  return 1;
+}
+
+EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group) {
+  if (a == NULL) {
+    return NULL;
+  }
+
+  EC_POINT *ret = EC_POINT_new(group);
+  if (ret == NULL ||
+      !EC_POINT_copy(ret, a)) {
+    EC_POINT_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  ec_GFp_simple_point_set_to_infinity(group, &point->raw);
+  return 1;
+}
+
+int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_is_at_infinity(group, &point->raw);
+}
+
+int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
+                         BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_is_on_curve(group, &point->raw);
+}
+
+int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
+                 BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, a->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, b->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return -1;
+  }
+  return ec_GFp_simple_cmp(group, &a->raw, &b->raw);
+}
+
+int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
+                                        const EC_POINT *point, BIGNUM *x,
+                                        BIGNUM *y, BN_CTX *ctx) {
+  if (group->meth->point_get_affine_coordinates == 0) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  EC_FELEM x_felem, y_felem;
+  if (!group->meth->point_get_affine_coordinates(group, &point->raw,
+                                                 x == NULL ? NULL : &x_felem,
+                                                 y == NULL ? NULL : &y_felem) ||
+      (x != NULL && !bn_set_words(x, x_felem.words, group->field.width)) ||
+      (y != NULL && !bn_set_words(y, y_felem.words, group->field.width))) {
+    return 0;
+  }
+  return 1;
+}
+
+int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point,
+                                        const BIGNUM *x, const BIGNUM *y,
+                                        BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  if (!ec_GFp_simple_point_set_affine_coordinates(group, &point->raw, x, y)) {
+    return 0;
+  }
+
+  if (!EC_POINT_is_on_curve(group, point, ctx)) {
+    // In the event of an error, defend against the caller not checking the
+    // return value by setting a known safe value: the base point.
+    const EC_POINT *generator = EC_GROUP_get0_generator(group);
+    // The generator can be missing if the caller is in the process of
+    // constructing an arbitrary group. In this, we give up and hope they're
+    // checking the return value.
+    if (generator) {
+      ec_GFp_simple_point_copy(&point->raw, &generator->raw);
+    }
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_IS_NOT_ON_CURVE);
+    return 0;
+  }
+
+  return 1;
+}
+
+int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
+                 const EC_POINT *b, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, a->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, b->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  group->meth->add(group, &r->raw, &a->raw, &b->raw);
+  return 1;
+}
+
+int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
+                 BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, a->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  group->meth->dbl(group, &r->raw, &a->raw);
+  return 1;
+}
+
+
+int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, a->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  ec_GFp_simple_invert(group, &a->raw);
+  return 1;
+}
+
+static int arbitrary_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                      const BIGNUM *in, BN_CTX *ctx) {
+  if (ec_bignum_to_scalar(group, out, in)) {
+    return 1;
+  }
+
+  ERR_clear_error();
+
+  // This is an unusual input, so we do not guarantee constant-time processing.
+  const BIGNUM *order = &group->order;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ok = tmp != NULL &&
+           BN_nnmod(tmp, in, order, ctx) &&
+           ec_bignum_to_scalar(group, out, tmp);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar,
+                 const EC_POINT *p, const BIGNUM *p_scalar, BN_CTX *ctx) {
+  // Previously, this function set |r| to the point at infinity if there was
+  // nothing to multiply. But, nobody should be calling this function with
+  // nothing to multiply in the first place.
+  if ((g_scalar == NULL && p_scalar == NULL) ||
+      (p == NULL) != (p_scalar == NULL))  {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      (p != NULL && EC_GROUP_cmp(group, p->group, NULL) != 0)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  int ret = 0;
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      goto err;
+    }
+    ctx = new_ctx;
+  }
+
+  // If both |g_scalar| and |p_scalar| are non-NULL,
+  // |ec_point_mul_scalar_public| would share the doublings between the two
+  // products, which would be more efficient. However, we conservatively assume
+  // the caller needs a constant-time operation. (ECDSA verification does not
+  // use this function.)
+  //
+  // Previously, the low-level constant-time multiplication function aligned
+  // with this function's calling convention, but this was misleading. Curves
+  // which combined the two multiplications did not avoid the doubling case
+  // in the incomplete addition formula and were not constant-time.
+
+  if (g_scalar != NULL) {
+    EC_SCALAR scalar;
+    if (!arbitrary_bignum_to_scalar(group, &scalar, g_scalar, ctx) ||
+        !ec_point_mul_scalar_base(group, &r->raw, &scalar)) {
+      goto err;
+    }
+  }
+
+  if (p_scalar != NULL) {
+    EC_SCALAR scalar;
+    EC_RAW_POINT tmp;
+    if (!arbitrary_bignum_to_scalar(group, &scalar, p_scalar, ctx) ||
+        !ec_point_mul_scalar(group, &tmp, &p->raw, &scalar)) {
+      goto err;
+    }
+    if (g_scalar == NULL) {
+      OPENSSL_memcpy(&r->raw, &tmp, sizeof(EC_RAW_POINT));
+    } else {
+      group->meth->add(group, &r->raw, &r->raw, &tmp);
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int ec_point_mul_scalar_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                               const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                               const EC_SCALAR *p_scalar) {
+  if (g_scalar == NULL || p_scalar == NULL || p == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul_public(group, r, g_scalar, p, p_scalar);
+  return 1;
+}
+
+int ec_point_mul_scalar(const EC_GROUP *group, EC_RAW_POINT *r,
+                        const EC_RAW_POINT *p, const EC_SCALAR *scalar) {
+  if (p == NULL || scalar == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul(group, r, p, scalar);
+  return 1;
+}
+
+int ec_point_mul_scalar_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_SCALAR *scalar) {
+  if (scalar == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul_base(group, r, scalar);
+  return 1;
+}
+
+int ec_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                        const EC_SCALAR *r) {
+  return group->meth->cmp_x_coordinate(group, p, r);
+}
+
+int ec_get_x_coordinate_as_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                  const EC_RAW_POINT *p) {
+  EC_FELEM x;
+  // For simplicity, in case of width mismatches between |group->field| and
+  // |group->order|, zero any untouched words in |x|.
+  OPENSSL_memset(&x, 0, sizeof(x));
+  if (!group->meth->point_get_affine_coordinates(group, p, &x, NULL)) {
+    return 0;
+  }
+
+  // We must have p < 2×order, assuming p is not tiny (p >= 17). Thus rather we
+  // can reduce by performing at most one subtraction.
+  //
+  // Proof: We only work with prime order curves, so the number of points on
+  // the curve is the order. Thus Hasse's theorem gives:
+  //
+  //     |order - (p + 1)| <= 2×sqrt(p)
+  //         p + 1 - order <= 2×sqrt(p)
+  //     p + 1 - 2×sqrt(p) <= order
+  //       p + 1 - 2×(p/4)  < order       (p/4 > sqrt(p) for p >= 17)
+  //         p/2 < p/2 + 1  < order
+  //                     p  < 2×order
+  //
+  // Additionally, one can manually check this property for built-in curves. It
+  // is enforced for legacy custom curves in |EC_GROUP_set_generator|.
+
+  // The above does not guarantee |group->field| is not one word larger than
+  // |group->order|, so read one extra carry word.
+  BN_ULONG carry =
+      group->order.width < EC_MAX_WORDS ? x.words[group->order.width] : 0;
+  bn_reduce_once(out->words, x.words, carry, group->order.d,
+                 group->order.width);
+  return 1;
+}
+
+int ec_point_get_affine_coordinate_bytes(const EC_GROUP *group, uint8_t *out_x,
+                                         uint8_t *out_y, size_t *out_len,
+                                         size_t max_out,
+                                         const EC_RAW_POINT *p) {
+  size_t len = BN_num_bytes(&group->field);
+  assert(len <= EC_MAX_BYTES);
+  if (max_out < len) {
+    OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  EC_FELEM x, y;
+  if (!group->meth->point_get_affine_coordinates(
+          group, p, out_x == NULL ? NULL : &x, out_y == NULL ? NULL : &y)) {
+    return 0;
+  }
+
+  if (out_x != NULL) {
+    for (size_t i = 0; i < len; i++) {
+      out_x[i] = x.bytes[len - i - 1];
+    }
+  }
+  if (out_y != NULL) {
+    for (size_t i = 0; i < len; i++) {
+      out_y[i] = y.bytes[len - i - 1];
+    }
+  }
+  *out_len = len;
+  return 1;
+}
+
+void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) {}
+
+const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) {
+  // This function exists purely to give callers a way to call
+  // |EC_METHOD_get_field_type|. cryptography.io crashes if |EC_GROUP_method_of|
+  // returns NULL, so return some other garbage pointer.
+  return (const EC_METHOD *)0x12340000;
+}
+
+int EC_METHOD_get_field_type(const EC_METHOD *meth) {
+  return NID_X9_62_prime_field;
+}
+
+void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
+                                        point_conversion_form_t form) {
+  if (form != POINT_CONVERSION_UNCOMPRESSED) {
+    abort();
+  }
+}
+
+size_t EC_get_builtin_curves(EC_builtin_curve *out_curves,
+                             size_t max_num_curves) {
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+
+  for (size_t i = 0; i < max_num_curves && i < OPENSSL_NUM_BUILT_IN_CURVES;
+       i++) {
+    out_curves[i].comment = curves->curves[i].comment;
+    out_curves[i].nid = curves->curves[i].nid;
+  }
+
+  return OPENSSL_NUM_BUILT_IN_CURVES;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c.grpc_back
new file mode 100644
index 0000000..158d66c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec.c.grpc_back	
@@ -0,0 +1,1080 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../bn/internal.h"
+#include "../delocate.h"
+
+
+static void ec_point_free(EC_POINT *point, int free_group);
+
+static const uint8_t kP224Params[6 * 28] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFE,
+    // b
+    0xB4, 0x05, 0x0A, 0x85, 0x0C, 0x04, 0xB3, 0xAB, 0xF5, 0x41, 0x32, 0x56,
+    0x50, 0x44, 0xB0, 0xB7, 0xD7, 0xBF, 0xD8, 0xBA, 0x27, 0x0B, 0x39, 0x43,
+    0x23, 0x55, 0xFF, 0xB4,
+    // x
+    0xB7, 0x0E, 0x0C, 0xBD, 0x6B, 0xB4, 0xBF, 0x7F, 0x32, 0x13, 0x90, 0xB9,
+    0x4A, 0x03, 0xC1, 0xD3, 0x56, 0xC2, 0x11, 0x22, 0x34, 0x32, 0x80, 0xD6,
+    0x11, 0x5C, 0x1D, 0x21,
+    // y
+    0xbd, 0x37, 0x63, 0x88, 0xb5, 0xf7, 0x23, 0xfb, 0x4c, 0x22, 0xdf, 0xe6,
+    0xcd, 0x43, 0x75, 0xa0, 0x5a, 0x07, 0x47, 0x64, 0x44, 0xd5, 0x81, 0x99,
+    0x85, 0x00, 0x7e, 0x34,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0x16, 0xA2, 0xE0, 0xB8, 0xF0, 0x3E, 0x13, 0xDD, 0x29, 0x45,
+    0x5C, 0x5C, 0x2A, 0x3D,
+};
+
+static const uint8_t kP256Params[6 * 32] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0x5A, 0xC6, 0x35, 0xD8, 0xAA, 0x3A, 0x93, 0xE7, 0xB3, 0xEB, 0xBD, 0x55,
+    0x76, 0x98, 0x86, 0xBC, 0x65, 0x1D, 0x06, 0xB0, 0xCC, 0x53, 0xB0, 0xF6,
+    0x3B, 0xCE, 0x3C, 0x3E, 0x27, 0xD2, 0x60, 0x4B,
+    // x
+    0x6B, 0x17, 0xD1, 0xF2, 0xE1, 0x2C, 0x42, 0x47, 0xF8, 0xBC, 0xE6, 0xE5,
+    0x63, 0xA4, 0x40, 0xF2, 0x77, 0x03, 0x7D, 0x81, 0x2D, 0xEB, 0x33, 0xA0,
+    0xF4, 0xA1, 0x39, 0x45, 0xD8, 0x98, 0xC2, 0x96,
+    // y
+    0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a,
+    0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce,
+    0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xBC, 0xE6, 0xFA, 0xAD, 0xA7, 0x17, 0x9E, 0x84,
+    0xF3, 0xB9, 0xCA, 0xC2, 0xFC, 0x63, 0x25, 0x51,
+};
+
+static const uint8_t kP384Params[6 * 48] = {
+    // p
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0xB3, 0x31, 0x2F, 0xA7, 0xE2, 0x3E, 0xE7, 0xE4, 0x98, 0x8E, 0x05, 0x6B,
+    0xE3, 0xF8, 0x2D, 0x19, 0x18, 0x1D, 0x9C, 0x6E, 0xFE, 0x81, 0x41, 0x12,
+    0x03, 0x14, 0x08, 0x8F, 0x50, 0x13, 0x87, 0x5A, 0xC6, 0x56, 0x39, 0x8D,
+    0x8A, 0x2E, 0xD1, 0x9D, 0x2A, 0x85, 0xC8, 0xED, 0xD3, 0xEC, 0x2A, 0xEF,
+    // x
+    0xAA, 0x87, 0xCA, 0x22, 0xBE, 0x8B, 0x05, 0x37, 0x8E, 0xB1, 0xC7, 0x1E,
+    0xF3, 0x20, 0xAD, 0x74, 0x6E, 0x1D, 0x3B, 0x62, 0x8B, 0xA7, 0x9B, 0x98,
+    0x59, 0xF7, 0x41, 0xE0, 0x82, 0x54, 0x2A, 0x38, 0x55, 0x02, 0xF2, 0x5D,
+    0xBF, 0x55, 0x29, 0x6C, 0x3A, 0x54, 0x5E, 0x38, 0x72, 0x76, 0x0A, 0xB7,
+    // y
+    0x36, 0x17, 0xde, 0x4a, 0x96, 0x26, 0x2c, 0x6f, 0x5d, 0x9e, 0x98, 0xbf,
+    0x92, 0x92, 0xdc, 0x29, 0xf8, 0xf4, 0x1d, 0xbd, 0x28, 0x9a, 0x14, 0x7c,
+    0xe9, 0xda, 0x31, 0x13, 0xb5, 0xf0, 0xb8, 0xc0, 0x0a, 0x60, 0xb1, 0xce,
+    0x1d, 0x7e, 0x81, 0x9d, 0x7a, 0x43, 0x1d, 0x7c, 0x90, 0xea, 0x0e, 0x5f,
+    // order
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xC7, 0x63, 0x4D, 0x81, 0xF4, 0x37, 0x2D, 0xDF, 0x58, 0x1A, 0x0D, 0xB2,
+    0x48, 0xB0, 0xA7, 0x7A, 0xEC, 0xEC, 0x19, 0x6A, 0xCC, 0xC5, 0x29, 0x73,
+};
+
+static const uint8_t kP521Params[6 * 66] = {
+    // p
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    // a
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+    // b
+    0x00, 0x51, 0x95, 0x3E, 0xB9, 0x61, 0x8E, 0x1C, 0x9A, 0x1F, 0x92, 0x9A,
+    0x21, 0xA0, 0xB6, 0x85, 0x40, 0xEE, 0xA2, 0xDA, 0x72, 0x5B, 0x99, 0xB3,
+    0x15, 0xF3, 0xB8, 0xB4, 0x89, 0x91, 0x8E, 0xF1, 0x09, 0xE1, 0x56, 0x19,
+    0x39, 0x51, 0xEC, 0x7E, 0x93, 0x7B, 0x16, 0x52, 0xC0, 0xBD, 0x3B, 0xB1,
+    0xBF, 0x07, 0x35, 0x73, 0xDF, 0x88, 0x3D, 0x2C, 0x34, 0xF1, 0xEF, 0x45,
+    0x1F, 0xD4, 0x6B, 0x50, 0x3F, 0x00,
+    // x
+    0x00, 0xC6, 0x85, 0x8E, 0x06, 0xB7, 0x04, 0x04, 0xE9, 0xCD, 0x9E, 0x3E,
+    0xCB, 0x66, 0x23, 0x95, 0xB4, 0x42, 0x9C, 0x64, 0x81, 0x39, 0x05, 0x3F,
+    0xB5, 0x21, 0xF8, 0x28, 0xAF, 0x60, 0x6B, 0x4D, 0x3D, 0xBA, 0xA1, 0x4B,
+    0x5E, 0x77, 0xEF, 0xE7, 0x59, 0x28, 0xFE, 0x1D, 0xC1, 0x27, 0xA2, 0xFF,
+    0xA8, 0xDE, 0x33, 0x48, 0xB3, 0xC1, 0x85, 0x6A, 0x42, 0x9B, 0xF9, 0x7E,
+    0x7E, 0x31, 0xC2, 0xE5, 0xBD, 0x66,
+    // y
+    0x01, 0x18, 0x39, 0x29, 0x6a, 0x78, 0x9a, 0x3b, 0xc0, 0x04, 0x5c, 0x8a,
+    0x5f, 0xb4, 0x2c, 0x7d, 0x1b, 0xd9, 0x98, 0xf5, 0x44, 0x49, 0x57, 0x9b,
+    0x44, 0x68, 0x17, 0xaf, 0xbd, 0x17, 0x27, 0x3e, 0x66, 0x2c, 0x97, 0xee,
+    0x72, 0x99, 0x5e, 0xf4, 0x26, 0x40, 0xc5, 0x50, 0xb9, 0x01, 0x3f, 0xad,
+    0x07, 0x61, 0x35, 0x3c, 0x70, 0x86, 0xa2, 0x72, 0xc2, 0x40, 0x88, 0xbe,
+    0x94, 0x76, 0x9f, 0xd1, 0x66, 0x50,
+    // order
+    0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFA, 0x51, 0x86,
+    0x87, 0x83, 0xBF, 0x2F, 0x96, 0x6B, 0x7F, 0xCC, 0x01, 0x48, 0xF7, 0x09,
+    0xA5, 0xD0, 0x3B, 0xB5, 0xC9, 0xB8, 0x89, 0x9C, 0x47, 0xAE, 0xBB, 0x6F,
+    0xB7, 0x1E, 0x91, 0x38, 0x64, 0x09,
+};
+
+DEFINE_METHOD_FUNCTION(struct built_in_curves, OPENSSL_built_in_curves) {
+  // 1.3.132.0.35
+  static const uint8_t kOIDP521[] = {0x2b, 0x81, 0x04, 0x00, 0x23};
+  out->curves[0].nid = NID_secp521r1;
+  out->curves[0].oid = kOIDP521;
+  out->curves[0].oid_len = sizeof(kOIDP521);
+  out->curves[0].comment = "NIST P-521";
+  out->curves[0].param_len = 66;
+  out->curves[0].params = kP521Params;
+  out->curves[0].method = EC_GFp_mont_method();
+
+  // 1.3.132.0.34
+  static const uint8_t kOIDP384[] = {0x2b, 0x81, 0x04, 0x00, 0x22};
+  out->curves[1].nid = NID_secp384r1;
+  out->curves[1].oid = kOIDP384;
+  out->curves[1].oid_len = sizeof(kOIDP384);
+  out->curves[1].comment = "NIST P-384";
+  out->curves[1].param_len = 48;
+  out->curves[1].params = kP384Params;
+  out->curves[1].method = EC_GFp_mont_method();
+
+  // 1.2.840.10045.3.1.7
+  static const uint8_t kOIDP256[] = {0x2a, 0x86, 0x48, 0xce,
+                                     0x3d, 0x03, 0x01, 0x07};
+  out->curves[2].nid = NID_X9_62_prime256v1;
+  out->curves[2].oid = kOIDP256;
+  out->curves[2].oid_len = sizeof(kOIDP256);
+  out->curves[2].comment = "NIST P-256";
+  out->curves[2].param_len = 32;
+  out->curves[2].params = kP256Params;
+  out->curves[2].method =
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+      EC_GFp_nistz256_method();
+#else
+      EC_GFp_nistp256_method();
+#endif
+
+  // 1.3.132.0.33
+  static const uint8_t kOIDP224[] = {0x2b, 0x81, 0x04, 0x00, 0x21};
+  out->curves[3].nid = NID_secp224r1;
+  out->curves[3].oid = kOIDP224;
+  out->curves[3].oid_len = sizeof(kOIDP224);
+  out->curves[3].comment = "NIST P-224";
+  out->curves[3].param_len = 28;
+  out->curves[3].params = kP224Params;
+  out->curves[3].method =
+#if defined(BORINGSSL_HAS_UINT128) && !defined(OPENSSL_SMALL)
+      EC_GFp_nistp224_method();
+#else
+      EC_GFp_mont_method();
+#endif
+}
+
+EC_GROUP *ec_group_new(const EC_METHOD *meth) {
+  EC_GROUP *ret;
+
+  if (meth == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_SLOT_FULL);
+    return NULL;
+  }
+
+  if (meth->group_init == 0) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return NULL;
+  }
+
+  ret = OPENSSL_malloc(sizeof(EC_GROUP));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(EC_GROUP));
+
+  ret->references = 1;
+  ret->meth = meth;
+  BN_init(&ret->order);
+
+  if (!meth->group_init(ret)) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+static void ec_group_set0_generator(EC_GROUP *group, EC_POINT *generator) {
+  assert(group->generator == NULL);
+  assert(group == generator->group);
+
+  // Avoid a reference cycle. |group->generator| does not maintain an owning
+  // pointer to |group|.
+  group->generator = generator;
+  int is_zero = CRYPTO_refcount_dec_and_test_zero(&group->references);
+
+  assert(!is_zero);
+  (void)is_zero;
+}
+
+EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
+                                 const BIGNUM *b, BN_CTX *ctx) {
+  if (BN_num_bytes(p) > EC_MAX_BYTES) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FIELD);
+    return NULL;
+  }
+
+  EC_GROUP *ret = ec_group_new(EC_GFp_mont_method());
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if (ret->meth->group_set_curve == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    EC_GROUP_free(ret);
+    return NULL;
+  }
+  if (!ret->meth->group_set_curve(ret, p, a, b, ctx)) {
+    EC_GROUP_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
+                           const BIGNUM *order, const BIGNUM *cofactor) {
+  if (group->curve_name != NID_undef || group->generator != NULL ||
+      generator->group != group) {
+    // |EC_GROUP_set_generator| may only be used with |EC_GROUP|s returned by
+    // |EC_GROUP_new_curve_GFp| and may only used once on each group.
+    // |generator| must have been created from |EC_GROUP_new_curve_GFp|, not a
+    // copy, so that |generator->group->generator| is set correctly.
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (BN_num_bytes(order) > EC_MAX_BYTES) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  // Require a cofactor of one for custom curves, which implies prime order.
+  if (!BN_is_one(cofactor)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COFACTOR);
+    return 0;
+  }
+
+  // Require that p < 2×order. This simplifies some ECDSA operations.
+  //
+  // Note any curve which did not satisfy this must have been invalid or use a
+  // tiny prime (less than 17). See the proof in |field_element_to_scalar| in
+  // the ECDSA implementation.
+  int ret = 0;
+  EC_POINT *copy = NULL;
+  BIGNUM *tmp = BN_new();
+  if (tmp == NULL ||
+      !BN_lshift1(tmp, order)) {
+    goto err;
+  }
+  if (BN_cmp(tmp, &group->field) <= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    goto err;
+  }
+
+  copy = EC_POINT_new(group);
+  if (copy == NULL ||
+      !EC_POINT_copy(copy, generator) ||
+      !BN_copy(&group->order, order)) {
+    goto err;
+  }
+  // Store the order in minimal form, so it can be used with |BN_ULONG| arrays.
+  bn_set_minimal_width(&group->order);
+
+  BN_MONT_CTX_free(group->order_mont);
+  group->order_mont = BN_MONT_CTX_new_for_modulus(&group->order, NULL);
+  if (group->order_mont == NULL) {
+    goto err;
+  }
+
+  group->field_greater_than_order = BN_cmp(&group->field, &group->order) > 0;
+  if (group->field_greater_than_order) {
+    if (!BN_sub(tmp, &group->field, &group->order) ||
+        !bn_copy_words(group->field_minus_order.words, group->field.width,
+                       tmp)) {
+      goto err;
+    }
+  }
+
+  ec_group_set0_generator(group, copy);
+  copy = NULL;
+  ret = 1;
+
+err:
+  EC_POINT_free(copy);
+  BN_free(tmp);
+  return ret;
+}
+
+static EC_GROUP *ec_group_new_from_data(const struct built_in_curve *curve) {
+  EC_GROUP *group = NULL;
+  EC_POINT *P = NULL;
+  BIGNUM *p = NULL, *a = NULL, *b = NULL, *x = NULL, *y = NULL;
+  int ok = 0;
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  const unsigned param_len = curve->param_len;
+  const uint8_t *params = curve->params;
+
+  if (!(p = BN_bin2bn(params + 0 * param_len, param_len, NULL)) ||
+      !(a = BN_bin2bn(params + 1 * param_len, param_len, NULL)) ||
+      !(b = BN_bin2bn(params + 2 * param_len, param_len, NULL))) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  group = ec_group_new(curve->method);
+  if (group == NULL ||
+      !group->meth->group_set_curve(group, p, a, b, ctx)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+
+  if ((P = EC_POINT_new(group)) == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+
+  if (!(x = BN_bin2bn(params + 3 * param_len, param_len, NULL)) ||
+      !(y = BN_bin2bn(params + 4 * param_len, param_len, NULL))) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  if (!EC_POINT_set_affine_coordinates_GFp(group, P, x, y, ctx)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+    goto err;
+  }
+  if (!BN_bin2bn(params + 5 * param_len, param_len, &group->order)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  group->field_greater_than_order = BN_cmp(&group->field, &group->order) > 0;
+  if (group->field_greater_than_order) {
+    if (!BN_sub(p, &group->field, &group->order) ||
+        !bn_copy_words(group->field_minus_order.words, group->field.width, p)) {
+      goto err;
+    }
+  }
+
+  group->order_mont = BN_MONT_CTX_new_for_modulus(&group->order, ctx);
+  if (group->order_mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ec_group_set0_generator(group, P);
+  P = NULL;
+  ok = 1;
+
+err:
+  if (!ok) {
+    EC_GROUP_free(group);
+    group = NULL;
+  }
+  EC_POINT_free(P);
+  BN_CTX_free(ctx);
+  BN_free(p);
+  BN_free(a);
+  BN_free(b);
+  BN_free(x);
+  BN_free(y);
+  return group;
+}
+
+// Built-in groups are allocated lazily and static once allocated.
+// TODO(davidben): Make these actually static. https://crbug.com/boringssl/20.
+struct built_in_groups_st {
+  EC_GROUP *groups[OPENSSL_NUM_BUILT_IN_CURVES];
+};
+DEFINE_BSS_GET(struct built_in_groups_st, built_in_groups)
+DEFINE_STATIC_MUTEX(built_in_groups_lock)
+
+EC_GROUP *EC_GROUP_new_by_curve_name(int nid) {
+  struct built_in_groups_st *groups = built_in_groups_bss_get();
+  EC_GROUP **group_ptr = NULL;
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+  const struct built_in_curve *curve = NULL;
+  for (size_t i = 0; i < OPENSSL_NUM_BUILT_IN_CURVES; i++) {
+    if (curves->curves[i].nid == nid) {
+      curve = &curves->curves[i];
+      group_ptr = &groups->groups[i];
+      break;
+    }
+  }
+
+  if (curve == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_UNKNOWN_GROUP);
+    return NULL;
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(built_in_groups_lock_bss_get());
+  EC_GROUP *ret = *group_ptr;
+  CRYPTO_STATIC_MUTEX_unlock_read(built_in_groups_lock_bss_get());
+  if (ret != NULL) {
+    return ret;
+  }
+
+  ret = ec_group_new_from_data(curve);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  EC_GROUP *to_free = NULL;
+  CRYPTO_STATIC_MUTEX_lock_write(built_in_groups_lock_bss_get());
+  if (*group_ptr == NULL) {
+    *group_ptr = ret;
+    // Filling in |ret->curve_name| makes |EC_GROUP_free| and |EC_GROUP_dup|
+    // into no-ops. At this point, |ret| is considered static.
+    ret->curve_name = nid;
+  } else {
+    to_free = ret;
+    ret = *group_ptr;
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(built_in_groups_lock_bss_get());
+
+  EC_GROUP_free(to_free);
+  return ret;
+}
+
+void EC_GROUP_free(EC_GROUP *group) {
+  if (group == NULL ||
+      // Built-in curves are static.
+      group->curve_name != NID_undef ||
+      !CRYPTO_refcount_dec_and_test_zero(&group->references)) {
+    return;
+  }
+
+  if (group->meth->group_finish != NULL) {
+    group->meth->group_finish(group);
+  }
+
+  ec_point_free(group->generator, 0 /* don't free group */);
+  BN_free(&group->order);
+  BN_MONT_CTX_free(group->order_mont);
+
+  OPENSSL_free(group);
+}
+
+EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) {
+  if (a == NULL ||
+      // Built-in curves are static.
+      a->curve_name != NID_undef) {
+    return (EC_GROUP *)a;
+  }
+
+  // Groups are logically immutable (but for |EC_GROUP_set_generator| which must
+  // be called early on), so we simply take a reference.
+  EC_GROUP *group = (EC_GROUP *)a;
+  CRYPTO_refcount_inc(&group->references);
+  return group;
+}
+
+int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ignored) {
+  // Note this function returns 0 if equal and non-zero otherwise.
+  if (a == b) {
+    return 0;
+  }
+  if (a->curve_name != b->curve_name) {
+    return 1;
+  }
+  if (a->curve_name != NID_undef) {
+    // Built-in curves may be compared by curve name alone.
+    return 0;
+  }
+
+  // |a| and |b| are both custom curves. We compare the entire curve
+  // structure. If |a| or |b| is incomplete (due to legacy OpenSSL mistakes,
+  // custom curve construction is sadly done in two parts) but otherwise not the
+  // same object, we consider them always unequal.
+  return a->meth != b->meth ||
+         a->generator == NULL ||
+         b->generator == NULL ||
+         BN_cmp(&a->order, &b->order) != 0 ||
+         BN_cmp(&a->field, &b->field) != 0 ||
+         !ec_felem_equal(a, &a->a, &b->a) ||
+         !ec_felem_equal(a, &a->b, &b->b) ||
+         ec_GFp_simple_cmp(a, &a->generator->raw, &b->generator->raw) != 0;
+}
+
+const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) {
+  return group->generator;
+}
+
+const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group) {
+  assert(!BN_is_zero(&group->order));
+  return &group->order;
+}
+
+int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) {
+  if (BN_copy(order, EC_GROUP_get0_order(group)) == NULL) {
+    return 0;
+  }
+  return 1;
+}
+
+int EC_GROUP_order_bits(const EC_GROUP *group) {
+  return BN_num_bits(&group->order);
+}
+
+int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
+                          BN_CTX *ctx) {
+  // All |EC_GROUP|s have cofactor 1.
+  return BN_set_word(cofactor, 1);
+}
+
+int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *out_p, BIGNUM *out_a,
+                           BIGNUM *out_b, BN_CTX *ctx) {
+  return ec_GFp_simple_group_get_curve(group, out_p, out_a, out_b);
+}
+
+int EC_GROUP_get_curve_name(const EC_GROUP *group) { return group->curve_name; }
+
+unsigned EC_GROUP_get_degree(const EC_GROUP *group) {
+  return BN_num_bits(&group->field);
+}
+
+const char *EC_curve_nid2nist(int nid) {
+  switch (nid) {
+    case NID_secp224r1:
+      return "P-224";
+    case NID_X9_62_prime256v1:
+      return "P-256";
+    case NID_secp384r1:
+      return "P-384";
+    case NID_secp521r1:
+      return "P-521";
+  }
+  return NULL;
+}
+
+int EC_curve_nist2nid(const char *name) {
+  if (strcmp(name, "P-224") == 0) {
+    return NID_secp224r1;
+  }
+  if (strcmp(name, "P-256") == 0) {
+    return NID_X9_62_prime256v1;
+  }
+  if (strcmp(name, "P-384") == 0) {
+    return NID_secp384r1;
+  }
+  if (strcmp(name, "P-521") == 0) {
+    return NID_secp521r1;
+  }
+  return NID_undef;
+}
+
+EC_POINT *EC_POINT_new(const EC_GROUP *group) {
+  if (group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+
+  EC_POINT *ret = OPENSSL_malloc(sizeof *ret);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  ret->group = EC_GROUP_dup(group);
+  ec_GFp_simple_point_init(&ret->raw);
+  return ret;
+}
+
+static void ec_point_free(EC_POINT *point, int free_group) {
+  if (!point) {
+    return;
+  }
+  if (free_group) {
+    EC_GROUP_free(point->group);
+  }
+  OPENSSL_free(point);
+}
+
+void EC_POINT_free(EC_POINT *point) {
+  ec_point_free(point, 1 /* free group */);
+}
+
+void EC_POINT_clear_free(EC_POINT *point) { EC_POINT_free(point); }
+
+int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) {
+  if (EC_GROUP_cmp(dest->group, src->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  if (dest == src) {
+    return 1;
+  }
+  ec_GFp_simple_point_copy(&dest->raw, &src->raw);
+  return 1;
+}
+
+EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group) {
+  if (a == NULL) {
+    return NULL;
+  }
+
+  EC_POINT *ret = EC_POINT_new(group);
+  if (ret == NULL ||
+      !EC_POINT_copy(ret, a)) {
+    EC_POINT_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  ec_GFp_simple_point_set_to_infinity(group, &point->raw);
+  return 1;
+}
+
+int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_is_at_infinity(group, &point->raw);
+}
+
+int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
+                         BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_is_on_curve(group, &point->raw);
+}
+
+int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
+                 BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, a->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, b->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return -1;
+  }
+  return ec_GFp_simple_cmp(group, &a->raw, &b->raw);
+}
+
+int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
+                                        const EC_POINT *point, BIGNUM *x,
+                                        BIGNUM *y, BN_CTX *ctx) {
+  if (group->meth->point_get_affine_coordinates == 0) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  EC_FELEM x_felem, y_felem;
+  if (!group->meth->point_get_affine_coordinates(group, &point->raw,
+                                                 x == NULL ? NULL : &x_felem,
+                                                 y == NULL ? NULL : &y_felem) ||
+      (x != NULL && !bn_set_words(x, x_felem.words, group->field.width)) ||
+      (y != NULL && !bn_set_words(y, y_felem.words, group->field.width))) {
+    return 0;
+  }
+  return 1;
+}
+
+int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *point,
+                                        const BIGNUM *x, const BIGNUM *y,
+                                        BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  if (!ec_GFp_simple_point_set_affine_coordinates(group, &point->raw, x, y)) {
+    return 0;
+  }
+
+  if (!EC_POINT_is_on_curve(group, point, ctx)) {
+    // In the event of an error, defend against the caller not checking the
+    // return value by setting a known safe value: the base point.
+    const EC_POINT *generator = EC_GROUP_get0_generator(group);
+    // The generator can be missing if the caller is in the process of
+    // constructing an arbitrary group. In this, we give up and hope they're
+    // checking the return value.
+    if (generator) {
+      ec_GFp_simple_point_copy(&point->raw, &generator->raw);
+    }
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_IS_NOT_ON_CURVE);
+    return 0;
+  }
+
+  return 1;
+}
+
+int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
+                 const EC_POINT *b, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, a->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, b->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  group->meth->add(group, &r->raw, &a->raw, &b->raw);
+  return 1;
+}
+
+int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
+                 BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      EC_GROUP_cmp(group, a->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  group->meth->dbl(group, &r->raw, &a->raw);
+  return 1;
+}
+
+
+int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, a->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  ec_GFp_simple_invert(group, &a->raw);
+  return 1;
+}
+
+static int arbitrary_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                      const BIGNUM *in, BN_CTX *ctx) {
+  if (ec_bignum_to_scalar(group, out, in)) {
+    return 1;
+  }
+
+  ERR_clear_error();
+
+  // This is an unusual input, so we do not guarantee constant-time processing.
+  const BIGNUM *order = &group->order;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ok = tmp != NULL &&
+           BN_nnmod(tmp, in, order, ctx) &&
+           ec_bignum_to_scalar(group, out, tmp);
+  BN_CTX_end(ctx);
+  return ok;
+}
+
+int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar,
+                 const EC_POINT *p, const BIGNUM *p_scalar, BN_CTX *ctx) {
+  // Previously, this function set |r| to the point at infinity if there was
+  // nothing to multiply. But, nobody should be calling this function with
+  // nothing to multiply in the first place.
+  if ((g_scalar == NULL && p_scalar == NULL) ||
+      (p == NULL) != (p_scalar == NULL))  {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (EC_GROUP_cmp(group, r->group, NULL) != 0 ||
+      (p != NULL && EC_GROUP_cmp(group, p->group, NULL) != 0)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  int ret = 0;
+  BN_CTX *new_ctx = NULL;
+  if (ctx == NULL) {
+    new_ctx = BN_CTX_new();
+    if (new_ctx == NULL) {
+      goto err;
+    }
+    ctx = new_ctx;
+  }
+
+  // If both |g_scalar| and |p_scalar| are non-NULL,
+  // |ec_point_mul_scalar_public| would share the doublings between the two
+  // products, which would be more efficient. However, we conservatively assume
+  // the caller needs a constant-time operation. (ECDSA verification does not
+  // use this function.)
+  //
+  // Previously, the low-level constant-time multiplication function aligned
+  // with this function's calling convention, but this was misleading. Curves
+  // which combined the two multiplications did not avoid the doubling case
+  // in the incomplete addition formula and were not constant-time.
+
+  if (g_scalar != NULL) {
+    EC_SCALAR scalar;
+    if (!arbitrary_bignum_to_scalar(group, &scalar, g_scalar, ctx) ||
+        !ec_point_mul_scalar_base(group, &r->raw, &scalar)) {
+      goto err;
+    }
+  }
+
+  if (p_scalar != NULL) {
+    EC_SCALAR scalar;
+    EC_RAW_POINT tmp;
+    if (!arbitrary_bignum_to_scalar(group, &scalar, p_scalar, ctx) ||
+        !ec_point_mul_scalar(group, &tmp, &p->raw, &scalar)) {
+      goto err;
+    }
+    if (g_scalar == NULL) {
+      OPENSSL_memcpy(&r->raw, &tmp, sizeof(EC_RAW_POINT));
+    } else {
+      group->meth->add(group, &r->raw, &r->raw, &tmp);
+    }
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int ec_point_mul_scalar_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                               const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                               const EC_SCALAR *p_scalar) {
+  if (g_scalar == NULL || p_scalar == NULL || p == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul_public(group, r, g_scalar, p, p_scalar);
+  return 1;
+}
+
+int ec_point_mul_scalar(const EC_GROUP *group, EC_RAW_POINT *r,
+                        const EC_RAW_POINT *p, const EC_SCALAR *scalar) {
+  if (p == NULL || scalar == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul(group, r, p, scalar);
+  return 1;
+}
+
+int ec_point_mul_scalar_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_SCALAR *scalar) {
+  if (scalar == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  group->meth->mul_base(group, r, scalar);
+  return 1;
+}
+
+int ec_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                        const EC_SCALAR *r) {
+  return group->meth->cmp_x_coordinate(group, p, r);
+}
+
+int ec_get_x_coordinate_as_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                  const EC_RAW_POINT *p) {
+  EC_FELEM x;
+  // For simplicity, in case of width mismatches between |group->field| and
+  // |group->order|, zero any untouched words in |x|.
+  OPENSSL_memset(&x, 0, sizeof(x));
+  if (!group->meth->point_get_affine_coordinates(group, p, &x, NULL)) {
+    return 0;
+  }
+
+  // We must have p < 2×order, assuming p is not tiny (p >= 17). Thus rather we
+  // can reduce by performing at most one subtraction.
+  //
+  // Proof: We only work with prime order curves, so the number of points on
+  // the curve is the order. Thus Hasse's theorem gives:
+  //
+  //     |order - (p + 1)| <= 2×sqrt(p)
+  //         p + 1 - order <= 2×sqrt(p)
+  //     p + 1 - 2×sqrt(p) <= order
+  //       p + 1 - 2×(p/4)  < order       (p/4 > sqrt(p) for p >= 17)
+  //         p/2 < p/2 + 1  < order
+  //                     p  < 2×order
+  //
+  // Additionally, one can manually check this property for built-in curves. It
+  // is enforced for legacy custom curves in |EC_GROUP_set_generator|.
+
+  // The above does not guarantee |group->field| is not one word larger than
+  // |group->order|, so read one extra carry word.
+  BN_ULONG carry =
+      group->order.width < EC_MAX_WORDS ? x.words[group->order.width] : 0;
+  bn_reduce_once(out->words, x.words, carry, group->order.d,
+                 group->order.width);
+  return 1;
+}
+
+int ec_point_get_affine_coordinate_bytes(const EC_GROUP *group, uint8_t *out_x,
+                                         uint8_t *out_y, size_t *out_len,
+                                         size_t max_out,
+                                         const EC_RAW_POINT *p) {
+  size_t len = BN_num_bytes(&group->field);
+  assert(len <= EC_MAX_BYTES);
+  if (max_out < len) {
+    OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  EC_FELEM x, y;
+  if (!group->meth->point_get_affine_coordinates(
+          group, p, out_x == NULL ? NULL : &x, out_y == NULL ? NULL : &y)) {
+    return 0;
+  }
+
+  if (out_x != NULL) {
+    for (size_t i = 0; i < len; i++) {
+      out_x[i] = x.bytes[len - i - 1];
+    }
+  }
+  if (out_y != NULL) {
+    for (size_t i = 0; i < len; i++) {
+      out_y[i] = y.bytes[len - i - 1];
+    }
+  }
+  *out_len = len;
+  return 1;
+}
+
+void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) {}
+
+const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) {
+  // This function exists purely to give callers a way to call
+  // |EC_METHOD_get_field_type|. cryptography.io crashes if |EC_GROUP_method_of|
+  // returns NULL, so return some other garbage pointer.
+  return (const EC_METHOD *)0x12340000;
+}
+
+int EC_METHOD_get_field_type(const EC_METHOD *meth) {
+  return NID_X9_62_prime_field;
+}
+
+void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
+                                        point_conversion_form_t form) {
+  if (form != POINT_CONVERSION_UNCOMPRESSED) {
+    abort();
+  }
+}
+
+size_t EC_get_builtin_curves(EC_builtin_curve *out_curves,
+                             size_t max_num_curves) {
+  const struct built_in_curves *const curves = OPENSSL_built_in_curves();
+
+  for (size_t i = 0; i < max_num_curves && i < OPENSSL_NUM_BUILT_IN_CURVES;
+       i++) {
+    out_curves[i].comment = curves->curves[i].comment;
+    out_curves[i].nid = curves->curves[i].nid;
+  }
+
+  return OPENSSL_NUM_BUILT_IN_CURVES;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c
new file mode 100644
index 0000000..7cf9ffb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c	
@@ -0,0 +1,479 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec_key.h>
+
+#include <string.h>
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+DEFINE_STATIC_EX_DATA_CLASS(g_ec_ex_data_class)
+
+static EC_WRAPPED_SCALAR *ec_wrapped_scalar_new(const EC_GROUP *group) {
+  EC_WRAPPED_SCALAR *wrapped = OPENSSL_malloc(sizeof(EC_WRAPPED_SCALAR));
+  if (wrapped == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(wrapped, 0, sizeof(EC_WRAPPED_SCALAR));
+  wrapped->bignum.d = wrapped->scalar.words;
+  wrapped->bignum.width = group->order.width;
+  wrapped->bignum.dmax = group->order.width;
+  wrapped->bignum.flags = BN_FLG_STATIC_DATA;
+  return wrapped;
+}
+
+static void ec_wrapped_scalar_free(EC_WRAPPED_SCALAR *scalar) {
+  OPENSSL_free(scalar);
+}
+
+EC_KEY *EC_KEY_new(void) { return EC_KEY_new_method(NULL); }
+
+EC_KEY *EC_KEY_new_method(const ENGINE *engine) {
+  EC_KEY *ret = OPENSSL_malloc(sizeof(EC_KEY));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EC_KEY));
+
+  if (engine) {
+    ret->ecdsa_meth = ENGINE_get_ECDSA_method(engine);
+  }
+  if (ret->ecdsa_meth) {
+    METHOD_ref(ret->ecdsa_meth);
+  }
+
+  ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
+  ret->references = 1;
+
+  CRYPTO_new_ex_data(&ret->ex_data);
+
+  if (ret->ecdsa_meth && ret->ecdsa_meth->init && !ret->ecdsa_meth->init(ret)) {
+    CRYPTO_free_ex_data(g_ec_ex_data_class_bss_get(), ret, &ret->ex_data);
+    if (ret->ecdsa_meth) {
+      METHOD_unref(ret->ecdsa_meth);
+    }
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+EC_KEY *EC_KEY_new_by_curve_name(int nid) {
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  ret->group = EC_GROUP_new_by_curve_name(nid);
+  if (ret->group == NULL) {
+    EC_KEY_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+void EC_KEY_free(EC_KEY *r) {
+  if (r == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&r->references)) {
+    return;
+  }
+
+  if (r->ecdsa_meth) {
+    if (r->ecdsa_meth->finish) {
+      r->ecdsa_meth->finish(r);
+    }
+    METHOD_unref(r->ecdsa_meth);
+  }
+
+  EC_GROUP_free(r->group);
+  EC_POINT_free(r->pub_key);
+  ec_wrapped_scalar_free(r->priv_key);
+  BN_free(r->fixed_k);
+
+  CRYPTO_free_ex_data(g_ec_ex_data_class_bss_get(), r, &r->ex_data);
+
+  OPENSSL_free(r);
+}
+
+EC_KEY *EC_KEY_dup(const EC_KEY *src) {
+  if (src == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if ((src->group != NULL &&
+       !EC_KEY_set_group(ret, src->group)) ||
+      (src->pub_key != NULL &&
+       !EC_KEY_set_public_key(ret, src->pub_key)) ||
+      (src->priv_key != NULL &&
+       !EC_KEY_set_private_key(ret, EC_KEY_get0_private_key(src)))) {
+    EC_KEY_free(ret);
+    return NULL;
+  }
+
+  ret->enc_flag = src->enc_flag;
+  ret->conv_form = src->conv_form;
+  return ret;
+}
+
+int EC_KEY_up_ref(EC_KEY *r) {
+  CRYPTO_refcount_inc(&r->references);
+  return 1;
+}
+
+int EC_KEY_is_opaque(const EC_KEY *key) {
+  return key->ecdsa_meth && (key->ecdsa_meth->flags & ECDSA_FLAG_OPAQUE);
+}
+
+const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key) { return key->group; }
+
+int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group) {
+  // If |key| already has a group, it is an error to switch to another one.
+  if (key->group != NULL) {
+    if (EC_GROUP_cmp(key->group, group, NULL) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+      return 0;
+    }
+    return 1;
+  }
+
+  assert(key->priv_key == NULL);
+  assert(key->pub_key == NULL);
+
+  EC_GROUP_free(key->group);
+  key->group = EC_GROUP_dup(group);
+  return key->group != NULL;
+}
+
+const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key) {
+  return key->priv_key != NULL ? &key->priv_key->bignum : NULL;
+}
+
+int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key) {
+  if (key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  EC_WRAPPED_SCALAR *scalar = ec_wrapped_scalar_new(key->group);
+  if (scalar == NULL) {
+    return 0;
+  }
+  if (!ec_bignum_to_scalar(key->group, &scalar->scalar, priv_key)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_WRONG_ORDER);
+    ec_wrapped_scalar_free(scalar);
+    return 0;
+  }
+  ec_wrapped_scalar_free(key->priv_key);
+  key->priv_key = scalar;
+  return 1;
+}
+
+const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key) {
+  return key->pub_key;
+}
+
+int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key) {
+  if (key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  if (pub_key != NULL && EC_GROUP_cmp(key->group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+    return 0;
+  }
+
+  EC_POINT_free(key->pub_key);
+  key->pub_key = EC_POINT_dup(pub_key, key->group);
+  return (key->pub_key == NULL) ? 0 : 1;
+}
+
+unsigned int EC_KEY_get_enc_flags(const EC_KEY *key) { return key->enc_flag; }
+
+void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags) {
+  key->enc_flag = flags;
+}
+
+point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key) {
+  return key->conv_form;
+}
+
+void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform) {
+  key->conv_form = cform;
+}
+
+int EC_KEY_check_key(const EC_KEY *eckey) {
+  int ok = 0;
+  BN_CTX *ctx = NULL;
+  EC_POINT *point = NULL;
+
+  if (!eckey || !eckey->group || !eckey->pub_key) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  // testing whether the pub_key is on the elliptic curve
+  if (!EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_IS_NOT_ON_CURVE);
+    goto err;
+  }
+  // in case the priv_key is present :
+  // check if generator * priv_key == pub_key
+  if (eckey->priv_key != NULL) {
+    point = EC_POINT_new(eckey->group);
+    if (point == NULL ||
+        !ec_point_mul_scalar_base(eckey->group, &point->raw,
+                                  &eckey->priv_key->scalar)) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+      goto err;
+    }
+    if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_PRIVATE_KEY);
+      goto err;
+    }
+  }
+  ok = 1;
+
+err:
+  BN_CTX_free(ctx);
+  EC_POINT_free(point);
+  return ok;
+}
+
+int EC_KEY_check_fips(const EC_KEY *key) {
+  if (EC_KEY_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    OPENSSL_PUT_ERROR(EC, EC_R_PUBLIC_KEY_VALIDATION_FAILED);
+    return 0;
+  }
+
+  if (!EC_KEY_check_key(key)) {
+    return 0;
+  }
+
+  if (key->priv_key) {
+    uint8_t data[16] = {0};
+    ECDSA_SIG *sig = ECDSA_do_sign(data, sizeof(data), key);
+#if defined(BORINGSSL_FIPS_BREAK_ECDSA_PWCT)
+    data[0] = ~data[0];
+#endif
+    int ok = sig != NULL &&
+             ECDSA_do_verify(data, sizeof(data), sig, key);
+    ECDSA_SIG_free(sig);
+    if (!ok) {
+      OPENSSL_PUT_ERROR(EC, EC_R_PUBLIC_KEY_VALIDATION_FAILED);
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, const BIGNUM *x,
+                                             const BIGNUM *y) {
+  EC_POINT *point = NULL;
+  int ok = 0;
+
+  if (!key || !key->group || !x || !y) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  point = EC_POINT_new(key->group);
+  if (point == NULL ||
+      !EC_POINT_set_affine_coordinates_GFp(key->group, point, x, y, NULL) ||
+      !EC_KEY_set_public_key(key, point) ||
+      !EC_KEY_check_key(key)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  EC_POINT_free(point);
+  return ok;
+}
+
+size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
+                      unsigned char **out_buf, BN_CTX *ctx) {
+  if (key == NULL || key->pub_key == NULL || key->group == NULL) {
+    return 0;
+  }
+
+  const size_t len =
+      EC_POINT_point2oct(key->group, key->pub_key, form, NULL, 0, ctx);
+  if (len == 0) {
+    return 0;
+  }
+
+  uint8_t *buf = OPENSSL_malloc(len);
+  if (buf == NULL) {
+    return 0;
+  }
+
+  if (EC_POINT_point2oct(key->group, key->pub_key, form, buf, len, ctx) !=
+      len) {
+    OPENSSL_free(buf);
+    return 0;
+  }
+
+  *out_buf = buf;
+  return len;
+}
+
+int EC_KEY_generate_key(EC_KEY *key) {
+  if (key == NULL || key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  // Check that the group order is FIPS compliant (FIPS 186-4 B.4.2).
+  if (BN_num_bits(EC_GROUP_get0_order(key->group)) < 160) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  static const uint8_t kDefaultAdditionalData[32] = {0};
+  EC_WRAPPED_SCALAR *priv_key = ec_wrapped_scalar_new(key->group);
+  EC_POINT *pub_key = EC_POINT_new(key->group);
+  if (priv_key == NULL || pub_key == NULL ||
+      // Generate the private key by testing candidates (FIPS 186-4 B.4.2).
+      !ec_random_nonzero_scalar(key->group, &priv_key->scalar,
+                                kDefaultAdditionalData) ||
+      !ec_point_mul_scalar_base(key->group, &pub_key->raw, &priv_key->scalar)) {
+    EC_POINT_free(pub_key);
+    ec_wrapped_scalar_free(priv_key);
+    return 0;
+  }
+
+  ec_wrapped_scalar_free(key->priv_key);
+  key->priv_key = priv_key;
+  EC_POINT_free(key->pub_key);
+  key->pub_key = pub_key;
+  return 1;
+}
+
+int EC_KEY_generate_key_fips(EC_KEY *eckey) {
+  return EC_KEY_generate_key(eckey) && EC_KEY_check_fips(eckey);
+}
+
+int EC_KEY_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                            CRYPTO_EX_dup *dup_unused,
+                            CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(g_ec_ex_data_class_bss_get(), &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int EC_KEY_set_ex_data(EC_KEY *d, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
+}
+
+void *EC_KEY_get_ex_data(const EC_KEY *d, int idx) {
+  return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
+
+void EC_KEY_set_asn1_flag(EC_KEY *key, int flag) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c.grpc_back
new file mode 100644
index 0000000..0d9ce67
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_key.c.grpc_back	
@@ -0,0 +1,479 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec_key.h>
+
+#include <string.h>
+
+#include <openssl/ec.h>
+#include <openssl/ecdsa.h>
+#include <openssl/engine.h>
+#include <openssl/err.h>
+#include <openssl/ex_data.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+DEFINE_STATIC_EX_DATA_CLASS(g_ec_ex_data_class)
+
+static EC_WRAPPED_SCALAR *ec_wrapped_scalar_new(const EC_GROUP *group) {
+  EC_WRAPPED_SCALAR *wrapped = OPENSSL_malloc(sizeof(EC_WRAPPED_SCALAR));
+  if (wrapped == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(wrapped, 0, sizeof(EC_WRAPPED_SCALAR));
+  wrapped->bignum.d = wrapped->scalar.words;
+  wrapped->bignum.width = group->order.width;
+  wrapped->bignum.dmax = group->order.width;
+  wrapped->bignum.flags = BN_FLG_STATIC_DATA;
+  return wrapped;
+}
+
+static void ec_wrapped_scalar_free(EC_WRAPPED_SCALAR *scalar) {
+  OPENSSL_free(scalar);
+}
+
+EC_KEY *EC_KEY_new(void) { return EC_KEY_new_method(NULL); }
+
+EC_KEY *EC_KEY_new_method(const ENGINE *engine) {
+  EC_KEY *ret = OPENSSL_malloc(sizeof(EC_KEY));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(ret, 0, sizeof(EC_KEY));
+
+  if (engine) {
+    ret->ecdsa_meth = ENGINE_get_ECDSA_method(engine);
+  }
+  if (ret->ecdsa_meth) {
+    METHOD_ref(ret->ecdsa_meth);
+  }
+
+  ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
+  ret->references = 1;
+
+  CRYPTO_new_ex_data(&ret->ex_data);
+
+  if (ret->ecdsa_meth && ret->ecdsa_meth->init && !ret->ecdsa_meth->init(ret)) {
+    CRYPTO_free_ex_data(g_ec_ex_data_class_bss_get(), ret, &ret->ex_data);
+    if (ret->ecdsa_meth) {
+      METHOD_unref(ret->ecdsa_meth);
+    }
+    OPENSSL_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+EC_KEY *EC_KEY_new_by_curve_name(int nid) {
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  ret->group = EC_GROUP_new_by_curve_name(nid);
+  if (ret->group == NULL) {
+    EC_KEY_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+void EC_KEY_free(EC_KEY *r) {
+  if (r == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&r->references)) {
+    return;
+  }
+
+  if (r->ecdsa_meth) {
+    if (r->ecdsa_meth->finish) {
+      r->ecdsa_meth->finish(r);
+    }
+    METHOD_unref(r->ecdsa_meth);
+  }
+
+  EC_GROUP_free(r->group);
+  EC_POINT_free(r->pub_key);
+  ec_wrapped_scalar_free(r->priv_key);
+  BN_free(r->fixed_k);
+
+  CRYPTO_free_ex_data(g_ec_ex_data_class_bss_get(), r, &r->ex_data);
+
+  OPENSSL_free(r);
+}
+
+EC_KEY *EC_KEY_dup(const EC_KEY *src) {
+  if (src == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+
+  EC_KEY *ret = EC_KEY_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  if ((src->group != NULL &&
+       !EC_KEY_set_group(ret, src->group)) ||
+      (src->pub_key != NULL &&
+       !EC_KEY_set_public_key(ret, src->pub_key)) ||
+      (src->priv_key != NULL &&
+       !EC_KEY_set_private_key(ret, EC_KEY_get0_private_key(src)))) {
+    EC_KEY_free(ret);
+    return NULL;
+  }
+
+  ret->enc_flag = src->enc_flag;
+  ret->conv_form = src->conv_form;
+  return ret;
+}
+
+int EC_KEY_up_ref(EC_KEY *r) {
+  CRYPTO_refcount_inc(&r->references);
+  return 1;
+}
+
+int EC_KEY_is_opaque(const EC_KEY *key) {
+  return key->ecdsa_meth && (key->ecdsa_meth->flags & ECDSA_FLAG_OPAQUE);
+}
+
+const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key) { return key->group; }
+
+int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group) {
+  // If |key| already has a group, it is an error to switch to another one.
+  if (key->group != NULL) {
+    if (EC_GROUP_cmp(key->group, group, NULL) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+      return 0;
+    }
+    return 1;
+  }
+
+  assert(key->priv_key == NULL);
+  assert(key->pub_key == NULL);
+
+  EC_GROUP_free(key->group);
+  key->group = EC_GROUP_dup(group);
+  return key->group != NULL;
+}
+
+const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key) {
+  return key->priv_key != NULL ? &key->priv_key->bignum : NULL;
+}
+
+int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key) {
+  if (key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  EC_WRAPPED_SCALAR *scalar = ec_wrapped_scalar_new(key->group);
+  if (scalar == NULL) {
+    return 0;
+  }
+  if (!ec_bignum_to_scalar(key->group, &scalar->scalar, priv_key)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_WRONG_ORDER);
+    ec_wrapped_scalar_free(scalar);
+    return 0;
+  }
+  ec_wrapped_scalar_free(key->priv_key);
+  key->priv_key = scalar;
+  return 1;
+}
+
+const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key) {
+  return key->pub_key;
+}
+
+int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key) {
+  if (key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  if (pub_key != NULL && EC_GROUP_cmp(key->group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_GROUP_MISMATCH);
+    return 0;
+  }
+
+  EC_POINT_free(key->pub_key);
+  key->pub_key = EC_POINT_dup(pub_key, key->group);
+  return (key->pub_key == NULL) ? 0 : 1;
+}
+
+unsigned int EC_KEY_get_enc_flags(const EC_KEY *key) { return key->enc_flag; }
+
+void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags) {
+  key->enc_flag = flags;
+}
+
+point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key) {
+  return key->conv_form;
+}
+
+void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform) {
+  key->conv_form = cform;
+}
+
+int EC_KEY_check_key(const EC_KEY *eckey) {
+  int ok = 0;
+  BN_CTX *ctx = NULL;
+  EC_POINT *point = NULL;
+
+  if (!eckey || !eckey->group || !eckey->pub_key) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    goto err;
+  }
+
+  ctx = BN_CTX_new();
+
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  // testing whether the pub_key is on the elliptic curve
+  if (!EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_IS_NOT_ON_CURVE);
+    goto err;
+  }
+  // in case the priv_key is present :
+  // check if generator * priv_key == pub_key
+  if (eckey->priv_key != NULL) {
+    point = EC_POINT_new(eckey->group);
+    if (point == NULL ||
+        !ec_point_mul_scalar_base(eckey->group, &point->raw,
+                                  &eckey->priv_key->scalar)) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_EC_LIB);
+      goto err;
+    }
+    if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_PRIVATE_KEY);
+      goto err;
+    }
+  }
+  ok = 1;
+
+err:
+  BN_CTX_free(ctx);
+  EC_POINT_free(point);
+  return ok;
+}
+
+int EC_KEY_check_fips(const EC_KEY *key) {
+  if (EC_KEY_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    OPENSSL_PUT_ERROR(EC, EC_R_PUBLIC_KEY_VALIDATION_FAILED);
+    return 0;
+  }
+
+  if (!EC_KEY_check_key(key)) {
+    return 0;
+  }
+
+  if (key->priv_key) {
+    uint8_t data[16] = {0};
+    ECDSA_SIG *sig = ECDSA_do_sign(data, sizeof(data), key);
+#if defined(BORINGSSL_FIPS_BREAK_ECDSA_PWCT)
+    data[0] = ~data[0];
+#endif
+    int ok = sig != NULL &&
+             ECDSA_do_verify(data, sizeof(data), sig, key);
+    ECDSA_SIG_free(sig);
+    if (!ok) {
+      OPENSSL_PUT_ERROR(EC, EC_R_PUBLIC_KEY_VALIDATION_FAILED);
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, const BIGNUM *x,
+                                             const BIGNUM *y) {
+  EC_POINT *point = NULL;
+  int ok = 0;
+
+  if (!key || !key->group || !x || !y) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  point = EC_POINT_new(key->group);
+  if (point == NULL ||
+      !EC_POINT_set_affine_coordinates_GFp(key->group, point, x, y, NULL) ||
+      !EC_KEY_set_public_key(key, point) ||
+      !EC_KEY_check_key(key)) {
+    goto err;
+  }
+
+  ok = 1;
+
+err:
+  EC_POINT_free(point);
+  return ok;
+}
+
+size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
+                      unsigned char **out_buf, BN_CTX *ctx) {
+  if (key == NULL || key->pub_key == NULL || key->group == NULL) {
+    return 0;
+  }
+
+  const size_t len =
+      EC_POINT_point2oct(key->group, key->pub_key, form, NULL, 0, ctx);
+  if (len == 0) {
+    return 0;
+  }
+
+  uint8_t *buf = OPENSSL_malloc(len);
+  if (buf == NULL) {
+    return 0;
+  }
+
+  if (EC_POINT_point2oct(key->group, key->pub_key, form, buf, len, ctx) !=
+      len) {
+    OPENSSL_free(buf);
+    return 0;
+  }
+
+  *out_buf = buf;
+  return len;
+}
+
+int EC_KEY_generate_key(EC_KEY *key) {
+  if (key == NULL || key->group == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  // Check that the group order is FIPS compliant (FIPS 186-4 B.4.2).
+  if (BN_num_bits(EC_GROUP_get0_order(key->group)) < 160) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  static const uint8_t kDefaultAdditionalData[32] = {0};
+  EC_WRAPPED_SCALAR *priv_key = ec_wrapped_scalar_new(key->group);
+  EC_POINT *pub_key = EC_POINT_new(key->group);
+  if (priv_key == NULL || pub_key == NULL ||
+      // Generate the private key by testing candidates (FIPS 186-4 B.4.2).
+      !ec_random_nonzero_scalar(key->group, &priv_key->scalar,
+                                kDefaultAdditionalData) ||
+      !ec_point_mul_scalar_base(key->group, &pub_key->raw, &priv_key->scalar)) {
+    EC_POINT_free(pub_key);
+    ec_wrapped_scalar_free(priv_key);
+    return 0;
+  }
+
+  ec_wrapped_scalar_free(key->priv_key);
+  key->priv_key = priv_key;
+  EC_POINT_free(key->pub_key);
+  key->pub_key = pub_key;
+  return 1;
+}
+
+int EC_KEY_generate_key_fips(EC_KEY *eckey) {
+  return EC_KEY_generate_key(eckey) && EC_KEY_check_fips(eckey);
+}
+
+int EC_KEY_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                            CRYPTO_EX_dup *dup_unused,
+                            CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(g_ec_ex_data_class_bss_get(), &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int EC_KEY_set_ex_data(EC_KEY *d, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
+}
+
+void *EC_KEY_get_ex_data(const EC_KEY *d, int idx) {
+  return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
+
+void EC_KEY_set_asn1_flag(EC_KEY *key, int flag) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c
new file mode 100644
index 0000000..a195b95
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c	
@@ -0,0 +1,483 @@
+/* Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "internal.h"
+
+
+int ec_GFp_mont_group_init(EC_GROUP *group) {
+  int ok;
+
+  ok = ec_GFp_simple_group_init(group);
+  group->mont = NULL;
+  return ok;
+}
+
+void ec_GFp_mont_group_finish(EC_GROUP *group) {
+  BN_MONT_CTX_free(group->mont);
+  group->mont = NULL;
+  ec_GFp_simple_group_finish(group);
+}
+
+int ec_GFp_mont_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+                                const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  BN_CTX *new_ctx = NULL;
+  int ret = 0;
+
+  BN_MONT_CTX_free(group->mont);
+  group->mont = NULL;
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  group->mont = BN_MONT_CTX_new_for_modulus(p, ctx);
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
+
+  if (!ret) {
+    BN_MONT_CTX_free(group->mont);
+    group->mont = NULL;
+  }
+
+err:
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+static void ec_GFp_mont_felem_to_montgomery(const EC_GROUP *group,
+                                            EC_FELEM *out, const EC_FELEM *in) {
+  bn_to_montgomery_small(out->words, in->words, group->field.width,
+                         group->mont);
+}
+
+static void ec_GFp_mont_felem_from_montgomery(const EC_GROUP *group,
+                                              EC_FELEM *out,
+                                              const EC_FELEM *in) {
+  bn_from_montgomery_small(out->words, in->words, group->field.width,
+                           group->mont);
+}
+
+static void ec_GFp_mont_felem_inv(const EC_GROUP *group, EC_FELEM *out,
+                                  const EC_FELEM *a) {
+  bn_mod_inverse_prime_mont_small(out->words, a->words, group->field.width,
+                                  group->mont);
+}
+
+void ec_GFp_mont_felem_mul(const EC_GROUP *group, EC_FELEM *r,
+                           const EC_FELEM *a, const EC_FELEM *b) {
+  bn_mod_mul_montgomery_small(r->words, a->words, b->words, group->field.width,
+                              group->mont);
+}
+
+void ec_GFp_mont_felem_sqr(const EC_GROUP *group, EC_FELEM *r,
+                           const EC_FELEM *a) {
+  bn_mod_mul_montgomery_small(r->words, a->words, a->words, group->field.width,
+                              group->mont);
+}
+
+int ec_GFp_mont_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                const BIGNUM *in) {
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!bn_copy_words(out->words, group->field.width, in)) {
+    return 0;
+  }
+  ec_GFp_mont_felem_to_montgomery(group, out, out);
+  return 1;
+}
+
+int ec_GFp_mont_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                const EC_FELEM *in) {
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EC_FELEM tmp;
+  ec_GFp_mont_felem_from_montgomery(group, &tmp, in);
+  return bn_set_words(out, tmp.words, group->field.width);
+}
+
+static int ec_GFp_mont_point_get_affine_coordinates(const EC_GROUP *group,
+                                                    const EC_RAW_POINT *point,
+                                                    EC_FELEM *x, EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  // Transform  (X, Y, Z)  into  (x, y) := (X/Z^2, Y/Z^3).
+
+  EC_FELEM z1, z2;
+  ec_GFp_mont_felem_inv(group, &z2, &point->Z);
+  ec_GFp_mont_felem_sqr(group, &z1, &z2);
+
+  // Instead of using |ec_GFp_mont_felem_from_montgomery| to convert the |x|
+  // coordinate and then calling |ec_GFp_mont_felem_from_montgomery| again to
+  // convert the |y| coordinate below, convert the common factor |z1| once now,
+  // saving one reduction.
+  ec_GFp_mont_felem_from_montgomery(group, &z1, &z1);
+
+  if (x != NULL) {
+    ec_GFp_mont_felem_mul(group, x, &point->X, &z1);
+  }
+
+  if (y != NULL) {
+    ec_GFp_mont_felem_mul(group, &z1, &z1, &z2);
+    ec_GFp_mont_felem_mul(group, y, &point->Y, &z1);
+  }
+
+  return 1;
+}
+
+void ec_GFp_mont_add(const EC_GROUP *group, EC_RAW_POINT *out,
+                     const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  if (a == b) {
+    ec_GFp_mont_dbl(group, out, a);
+    return;
+  }
+
+  // The method is taken from:
+  //   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian.html#addition-add-2007-bl
+  //
+  // Coq transcription and correctness proof:
+  // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L467>
+  // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L544>
+  EC_FELEM x_out, y_out, z_out;
+  BN_ULONG z1nz = ec_felem_non_zero_mask(group, &a->Z);
+  BN_ULONG z2nz = ec_felem_non_zero_mask(group, &b->Z);
+
+  // z1z1 = z1z1 = z1**2
+  EC_FELEM z1z1;
+  ec_GFp_mont_felem_sqr(group, &z1z1, &a->Z);
+
+  // z2z2 = z2**2
+  EC_FELEM z2z2;
+  ec_GFp_mont_felem_sqr(group, &z2z2, &b->Z);
+
+  // u1 = x1*z2z2
+  EC_FELEM u1;
+  ec_GFp_mont_felem_mul(group, &u1, &a->X, &z2z2);
+
+  // two_z1z2 = (z1 + z2)**2 - (z1z1 + z2z2) = 2z1z2
+  EC_FELEM two_z1z2;
+  ec_felem_add(group, &two_z1z2, &a->Z, &b->Z);
+  ec_GFp_mont_felem_sqr(group, &two_z1z2, &two_z1z2);
+  ec_felem_sub(group, &two_z1z2, &two_z1z2, &z1z1);
+  ec_felem_sub(group, &two_z1z2, &two_z1z2, &z2z2);
+
+  // s1 = y1 * z2**3
+  EC_FELEM s1;
+  ec_GFp_mont_felem_mul(group, &s1, &b->Z, &z2z2);
+  ec_GFp_mont_felem_mul(group, &s1, &s1, &a->Y);
+
+  // u2 = x2*z1z1
+  EC_FELEM u2;
+  ec_GFp_mont_felem_mul(group, &u2, &b->X, &z1z1);
+
+  // h = u2 - u1
+  EC_FELEM h;
+  ec_felem_sub(group, &h, &u2, &u1);
+
+  BN_ULONG xneq = ec_felem_non_zero_mask(group, &h);
+
+  // z_out = two_z1z2 * h
+  ec_GFp_mont_felem_mul(group, &z_out, &h, &two_z1z2);
+
+  // z1z1z1 = z1 * z1z1
+  EC_FELEM z1z1z1;
+  ec_GFp_mont_felem_mul(group, &z1z1z1, &a->Z, &z1z1);
+
+  // s2 = y2 * z1**3
+  EC_FELEM s2;
+  ec_GFp_mont_felem_mul(group, &s2, &b->Y, &z1z1z1);
+
+  // r = (s2 - s1)*2
+  EC_FELEM r;
+  ec_felem_sub(group, &r, &s2, &s1);
+  ec_felem_add(group, &r, &r, &r);
+
+  BN_ULONG yneq = ec_felem_non_zero_mask(group, &r);
+
+  // This case will never occur in the constant-time |ec_GFp_mont_mul|.
+  BN_ULONG is_nontrivial_double = ~xneq & ~yneq & z1nz & z2nz;
+  if (is_nontrivial_double) {
+    ec_GFp_mont_dbl(group, out, a);
+    return;
+  }
+
+  // I = (2h)**2
+  EC_FELEM i;
+  ec_felem_add(group, &i, &h, &h);
+  ec_GFp_mont_felem_sqr(group, &i, &i);
+
+  // J = h * I
+  EC_FELEM j;
+  ec_GFp_mont_felem_mul(group, &j, &h, &i);
+
+  // V = U1 * I
+  EC_FELEM v;
+  ec_GFp_mont_felem_mul(group, &v, &u1, &i);
+
+  // x_out = r**2 - J - 2V
+  ec_GFp_mont_felem_sqr(group, &x_out, &r);
+  ec_felem_sub(group, &x_out, &x_out, &j);
+  ec_felem_sub(group, &x_out, &x_out, &v);
+  ec_felem_sub(group, &x_out, &x_out, &v);
+
+  // y_out = r(V-x_out) - 2 * s1 * J
+  ec_felem_sub(group, &y_out, &v, &x_out);
+  ec_GFp_mont_felem_mul(group, &y_out, &y_out, &r);
+  EC_FELEM s1j;
+  ec_GFp_mont_felem_mul(group, &s1j, &s1, &j);
+  ec_felem_sub(group, &y_out, &y_out, &s1j);
+  ec_felem_sub(group, &y_out, &y_out, &s1j);
+
+  ec_felem_select(group, &x_out, z1nz, &x_out, &b->X);
+  ec_felem_select(group, &out->X, z2nz, &x_out, &a->X);
+  ec_felem_select(group, &y_out, z1nz, &y_out, &b->Y);
+  ec_felem_select(group, &out->Y, z2nz, &y_out, &a->Y);
+  ec_felem_select(group, &z_out, z1nz, &z_out, &b->Z);
+  ec_felem_select(group, &out->Z, z2nz, &z_out, &a->Z);
+}
+
+void ec_GFp_mont_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *a) {
+  if (group->a_is_minus3) {
+    // The method is taken from:
+    //   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
+    //
+    // Coq transcription and correctness proof:
+    // <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L93>
+    // <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L201>
+    EC_FELEM delta, gamma, beta, ftmp, ftmp2, tmptmp, alpha, fourbeta;
+    // delta = z^2
+    ec_GFp_mont_felem_sqr(group, &delta, &a->Z);
+    // gamma = y^2
+    ec_GFp_mont_felem_sqr(group, &gamma, &a->Y);
+    // beta = x*gamma
+    ec_GFp_mont_felem_mul(group, &beta, &a->X, &gamma);
+
+    // alpha = 3*(x-delta)*(x+delta)
+    ec_felem_sub(group, &ftmp, &a->X, &delta);
+    ec_felem_add(group, &ftmp2, &a->X, &delta);
+
+    ec_felem_add(group, &tmptmp, &ftmp2, &ftmp2);
+    ec_felem_add(group, &ftmp2, &ftmp2, &tmptmp);
+    ec_GFp_mont_felem_mul(group, &alpha, &ftmp, &ftmp2);
+
+    // x' = alpha^2 - 8*beta
+    ec_GFp_mont_felem_sqr(group, &r->X, &alpha);
+    ec_felem_add(group, &fourbeta, &beta, &beta);
+    ec_felem_add(group, &fourbeta, &fourbeta, &fourbeta);
+    ec_felem_add(group, &tmptmp, &fourbeta, &fourbeta);
+    ec_felem_sub(group, &r->X, &r->X, &tmptmp);
+
+    // z' = (y + z)^2 - gamma - delta
+    ec_felem_add(group, &delta, &gamma, &delta);
+    ec_felem_add(group, &ftmp, &a->Y, &a->Z);
+    ec_GFp_mont_felem_sqr(group, &r->Z, &ftmp);
+    ec_felem_sub(group, &r->Z, &r->Z, &delta);
+
+    // y' = alpha*(4*beta - x') - 8*gamma^2
+    ec_felem_sub(group, &r->Y, &fourbeta, &r->X);
+    ec_felem_add(group, &gamma, &gamma, &gamma);
+    ec_GFp_mont_felem_sqr(group, &gamma, &gamma);
+    ec_GFp_mont_felem_mul(group, &r->Y, &alpha, &r->Y);
+    ec_felem_add(group, &gamma, &gamma, &gamma);
+    ec_felem_sub(group, &r->Y, &r->Y, &gamma);
+  } else {
+    // The method is taken from:
+    //   http://www.hyperelliptic.org/EFD/g1p/auto-shortw-jacobian.html#doubling-dbl-2007-bl
+    //
+    // Coq transcription and correctness proof:
+    // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L102>
+    // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L534>
+    EC_FELEM xx, yy, yyyy, zz;
+    ec_GFp_mont_felem_sqr(group, &xx, &a->X);
+    ec_GFp_mont_felem_sqr(group, &yy, &a->Y);
+    ec_GFp_mont_felem_sqr(group, &yyyy, &yy);
+    ec_GFp_mont_felem_sqr(group, &zz, &a->Z);
+
+    // s = 2*((x_in + yy)^2 - xx - yyyy)
+    EC_FELEM s;
+    ec_felem_add(group, &s, &a->X, &yy);
+    ec_GFp_mont_felem_sqr(group, &s, &s);
+    ec_felem_sub(group, &s, &s, &xx);
+    ec_felem_sub(group, &s, &s, &yyyy);
+    ec_felem_add(group, &s, &s, &s);
+
+    // m = 3*xx + a*zz^2
+    EC_FELEM m;
+    ec_GFp_mont_felem_sqr(group, &m, &zz);
+    ec_GFp_mont_felem_mul(group, &m, &group->a, &m);
+    ec_felem_add(group, &m, &m, &xx);
+    ec_felem_add(group, &m, &m, &xx);
+    ec_felem_add(group, &m, &m, &xx);
+
+    // x_out = m^2 - 2*s
+    ec_GFp_mont_felem_sqr(group, &r->X, &m);
+    ec_felem_sub(group, &r->X, &r->X, &s);
+    ec_felem_sub(group, &r->X, &r->X, &s);
+
+    // z_out = (y_in + z_in)^2 - yy - zz
+    ec_felem_add(group, &r->Z, &a->Y, &a->Z);
+    ec_GFp_mont_felem_sqr(group, &r->Z, &r->Z);
+    ec_felem_sub(group, &r->Z, &r->Z, &yy);
+    ec_felem_sub(group, &r->Z, &r->Z, &zz);
+
+    // y_out = m*(s-x_out) - 8*yyyy
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_sub(group, &r->Y, &s, &r->X);
+    ec_GFp_mont_felem_mul(group, &r->Y, &r->Y, &m);
+    ec_felem_sub(group, &r->Y, &r->Y, &yyyy);
+  }
+}
+
+static int ec_GFp_mont_cmp_x_coordinate(const EC_GROUP *group,
+                                        const EC_RAW_POINT *p,
+                                        const EC_SCALAR *r) {
+  if (!group->field_greater_than_order ||
+      group->field.width != group->order.width) {
+    // Do not bother optimizing this case. p > order in all commonly-used
+    // curves.
+    return ec_GFp_simple_cmp_x_coordinate(group, p, r);
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  EC_FELEM r_Z2, Z2_mont, X;
+  ec_GFp_mont_felem_mul(group, &Z2_mont, &p->Z, &p->Z);
+  // r < order < p, so this is valid.
+  OPENSSL_memcpy(r_Z2.words, r->words, group->field.width * sizeof(BN_ULONG));
+  ec_GFp_mont_felem_mul(group, &r_Z2, &r_Z2, &Z2_mont);
+  ec_GFp_mont_felem_from_montgomery(group, &X, &p->X);
+
+  if (ec_felem_equal(group, &r_Z2, &X)) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         group->field.width)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    bn_add_words(r_Z2.words, r->words, group->order.d, group->field.width);
+    ec_GFp_mont_felem_mul(group, &r_Z2, &r_Z2, &Z2_mont);
+    if (ec_felem_equal(group, &r_Z2, &X)) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_mont_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates = ec_GFp_mont_point_get_affine_coordinates;
+  out->add = ec_GFp_mont_add;
+  out->dbl = ec_GFp_mont_dbl;
+  out->mul = ec_GFp_mont_mul;
+  out->mul_base = ec_GFp_mont_mul_base;
+  out->mul_public = ec_GFp_mont_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_mont_cmp_x_coordinate;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c.grpc_back
new file mode 100644
index 0000000..0cf1d91
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/ec_montgomery.c.grpc_back	
@@ -0,0 +1,483 @@
+/* Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "internal.h"
+
+
+int ec_GFp_mont_group_init(EC_GROUP *group) {
+  int ok;
+
+  ok = ec_GFp_simple_group_init(group);
+  group->mont = NULL;
+  return ok;
+}
+
+void ec_GFp_mont_group_finish(EC_GROUP *group) {
+  BN_MONT_CTX_free(group->mont);
+  group->mont = NULL;
+  ec_GFp_simple_group_finish(group);
+}
+
+int ec_GFp_mont_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+                                const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) {
+  BN_CTX *new_ctx = NULL;
+  int ret = 0;
+
+  BN_MONT_CTX_free(group->mont);
+  group->mont = NULL;
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  group->mont = BN_MONT_CTX_new_for_modulus(p, ctx);
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    goto err;
+  }
+
+  ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
+
+  if (!ret) {
+    BN_MONT_CTX_free(group->mont);
+    group->mont = NULL;
+  }
+
+err:
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+static void ec_GFp_mont_felem_to_montgomery(const EC_GROUP *group,
+                                            EC_FELEM *out, const EC_FELEM *in) {
+  bn_to_montgomery_small(out->words, in->words, group->field.width,
+                         group->mont);
+}
+
+static void ec_GFp_mont_felem_from_montgomery(const EC_GROUP *group,
+                                              EC_FELEM *out,
+                                              const EC_FELEM *in) {
+  bn_from_montgomery_small(out->words, in->words, group->field.width,
+                           group->mont);
+}
+
+static void ec_GFp_mont_felem_inv(const EC_GROUP *group, EC_FELEM *out,
+                                  const EC_FELEM *a) {
+  bn_mod_inverse_prime_mont_small(out->words, a->words, group->field.width,
+                                  group->mont);
+}
+
+void ec_GFp_mont_felem_mul(const EC_GROUP *group, EC_FELEM *r,
+                           const EC_FELEM *a, const EC_FELEM *b) {
+  bn_mod_mul_montgomery_small(r->words, a->words, b->words, group->field.width,
+                              group->mont);
+}
+
+void ec_GFp_mont_felem_sqr(const EC_GROUP *group, EC_FELEM *r,
+                           const EC_FELEM *a) {
+  bn_mod_mul_montgomery_small(r->words, a->words, a->words, group->field.width,
+                              group->mont);
+}
+
+int ec_GFp_mont_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                const BIGNUM *in) {
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  if (!bn_copy_words(out->words, group->field.width, in)) {
+    return 0;
+  }
+  ec_GFp_mont_felem_to_montgomery(group, out, out);
+  return 1;
+}
+
+int ec_GFp_mont_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                const EC_FELEM *in) {
+  if (group->mont == NULL) {
+    OPENSSL_PUT_ERROR(EC, EC_R_NOT_INITIALIZED);
+    return 0;
+  }
+
+  EC_FELEM tmp;
+  ec_GFp_mont_felem_from_montgomery(group, &tmp, in);
+  return bn_set_words(out, tmp.words, group->field.width);
+}
+
+static int ec_GFp_mont_point_get_affine_coordinates(const EC_GROUP *group,
+                                                    const EC_RAW_POINT *point,
+                                                    EC_FELEM *x, EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  // Transform  (X, Y, Z)  into  (x, y) := (X/Z^2, Y/Z^3).
+
+  EC_FELEM z1, z2;
+  ec_GFp_mont_felem_inv(group, &z2, &point->Z);
+  ec_GFp_mont_felem_sqr(group, &z1, &z2);
+
+  // Instead of using |ec_GFp_mont_felem_from_montgomery| to convert the |x|
+  // coordinate and then calling |ec_GFp_mont_felem_from_montgomery| again to
+  // convert the |y| coordinate below, convert the common factor |z1| once now,
+  // saving one reduction.
+  ec_GFp_mont_felem_from_montgomery(group, &z1, &z1);
+
+  if (x != NULL) {
+    ec_GFp_mont_felem_mul(group, x, &point->X, &z1);
+  }
+
+  if (y != NULL) {
+    ec_GFp_mont_felem_mul(group, &z1, &z1, &z2);
+    ec_GFp_mont_felem_mul(group, y, &point->Y, &z1);
+  }
+
+  return 1;
+}
+
+void ec_GFp_mont_add(const EC_GROUP *group, EC_RAW_POINT *out,
+                     const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  if (a == b) {
+    ec_GFp_mont_dbl(group, out, a);
+    return;
+  }
+
+  // The method is taken from:
+  //   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian.html#addition-add-2007-bl
+  //
+  // Coq transcription and correctness proof:
+  // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L467>
+  // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L544>
+  EC_FELEM x_out, y_out, z_out;
+  BN_ULONG z1nz = ec_felem_non_zero_mask(group, &a->Z);
+  BN_ULONG z2nz = ec_felem_non_zero_mask(group, &b->Z);
+
+  // z1z1 = z1z1 = z1**2
+  EC_FELEM z1z1;
+  ec_GFp_mont_felem_sqr(group, &z1z1, &a->Z);
+
+  // z2z2 = z2**2
+  EC_FELEM z2z2;
+  ec_GFp_mont_felem_sqr(group, &z2z2, &b->Z);
+
+  // u1 = x1*z2z2
+  EC_FELEM u1;
+  ec_GFp_mont_felem_mul(group, &u1, &a->X, &z2z2);
+
+  // two_z1z2 = (z1 + z2)**2 - (z1z1 + z2z2) = 2z1z2
+  EC_FELEM two_z1z2;
+  ec_felem_add(group, &two_z1z2, &a->Z, &b->Z);
+  ec_GFp_mont_felem_sqr(group, &two_z1z2, &two_z1z2);
+  ec_felem_sub(group, &two_z1z2, &two_z1z2, &z1z1);
+  ec_felem_sub(group, &two_z1z2, &two_z1z2, &z2z2);
+
+  // s1 = y1 * z2**3
+  EC_FELEM s1;
+  ec_GFp_mont_felem_mul(group, &s1, &b->Z, &z2z2);
+  ec_GFp_mont_felem_mul(group, &s1, &s1, &a->Y);
+
+  // u2 = x2*z1z1
+  EC_FELEM u2;
+  ec_GFp_mont_felem_mul(group, &u2, &b->X, &z1z1);
+
+  // h = u2 - u1
+  EC_FELEM h;
+  ec_felem_sub(group, &h, &u2, &u1);
+
+  BN_ULONG xneq = ec_felem_non_zero_mask(group, &h);
+
+  // z_out = two_z1z2 * h
+  ec_GFp_mont_felem_mul(group, &z_out, &h, &two_z1z2);
+
+  // z1z1z1 = z1 * z1z1
+  EC_FELEM z1z1z1;
+  ec_GFp_mont_felem_mul(group, &z1z1z1, &a->Z, &z1z1);
+
+  // s2 = y2 * z1**3
+  EC_FELEM s2;
+  ec_GFp_mont_felem_mul(group, &s2, &b->Y, &z1z1z1);
+
+  // r = (s2 - s1)*2
+  EC_FELEM r;
+  ec_felem_sub(group, &r, &s2, &s1);
+  ec_felem_add(group, &r, &r, &r);
+
+  BN_ULONG yneq = ec_felem_non_zero_mask(group, &r);
+
+  // This case will never occur in the constant-time |ec_GFp_mont_mul|.
+  BN_ULONG is_nontrivial_double = ~xneq & ~yneq & z1nz & z2nz;
+  if (is_nontrivial_double) {
+    ec_GFp_mont_dbl(group, out, a);
+    return;
+  }
+
+  // I = (2h)**2
+  EC_FELEM i;
+  ec_felem_add(group, &i, &h, &h);
+  ec_GFp_mont_felem_sqr(group, &i, &i);
+
+  // J = h * I
+  EC_FELEM j;
+  ec_GFp_mont_felem_mul(group, &j, &h, &i);
+
+  // V = U1 * I
+  EC_FELEM v;
+  ec_GFp_mont_felem_mul(group, &v, &u1, &i);
+
+  // x_out = r**2 - J - 2V
+  ec_GFp_mont_felem_sqr(group, &x_out, &r);
+  ec_felem_sub(group, &x_out, &x_out, &j);
+  ec_felem_sub(group, &x_out, &x_out, &v);
+  ec_felem_sub(group, &x_out, &x_out, &v);
+
+  // y_out = r(V-x_out) - 2 * s1 * J
+  ec_felem_sub(group, &y_out, &v, &x_out);
+  ec_GFp_mont_felem_mul(group, &y_out, &y_out, &r);
+  EC_FELEM s1j;
+  ec_GFp_mont_felem_mul(group, &s1j, &s1, &j);
+  ec_felem_sub(group, &y_out, &y_out, &s1j);
+  ec_felem_sub(group, &y_out, &y_out, &s1j);
+
+  ec_felem_select(group, &x_out, z1nz, &x_out, &b->X);
+  ec_felem_select(group, &out->X, z2nz, &x_out, &a->X);
+  ec_felem_select(group, &y_out, z1nz, &y_out, &b->Y);
+  ec_felem_select(group, &out->Y, z2nz, &y_out, &a->Y);
+  ec_felem_select(group, &z_out, z1nz, &z_out, &b->Z);
+  ec_felem_select(group, &out->Z, z2nz, &z_out, &a->Z);
+}
+
+void ec_GFp_mont_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *a) {
+  if (group->a_is_minus3) {
+    // The method is taken from:
+    //   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
+    //
+    // Coq transcription and correctness proof:
+    // <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L93>
+    // <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L201>
+    EC_FELEM delta, gamma, beta, ftmp, ftmp2, tmptmp, alpha, fourbeta;
+    // delta = z^2
+    ec_GFp_mont_felem_sqr(group, &delta, &a->Z);
+    // gamma = y^2
+    ec_GFp_mont_felem_sqr(group, &gamma, &a->Y);
+    // beta = x*gamma
+    ec_GFp_mont_felem_mul(group, &beta, &a->X, &gamma);
+
+    // alpha = 3*(x-delta)*(x+delta)
+    ec_felem_sub(group, &ftmp, &a->X, &delta);
+    ec_felem_add(group, &ftmp2, &a->X, &delta);
+
+    ec_felem_add(group, &tmptmp, &ftmp2, &ftmp2);
+    ec_felem_add(group, &ftmp2, &ftmp2, &tmptmp);
+    ec_GFp_mont_felem_mul(group, &alpha, &ftmp, &ftmp2);
+
+    // x' = alpha^2 - 8*beta
+    ec_GFp_mont_felem_sqr(group, &r->X, &alpha);
+    ec_felem_add(group, &fourbeta, &beta, &beta);
+    ec_felem_add(group, &fourbeta, &fourbeta, &fourbeta);
+    ec_felem_add(group, &tmptmp, &fourbeta, &fourbeta);
+    ec_felem_sub(group, &r->X, &r->X, &tmptmp);
+
+    // z' = (y + z)^2 - gamma - delta
+    ec_felem_add(group, &delta, &gamma, &delta);
+    ec_felem_add(group, &ftmp, &a->Y, &a->Z);
+    ec_GFp_mont_felem_sqr(group, &r->Z, &ftmp);
+    ec_felem_sub(group, &r->Z, &r->Z, &delta);
+
+    // y' = alpha*(4*beta - x') - 8*gamma^2
+    ec_felem_sub(group, &r->Y, &fourbeta, &r->X);
+    ec_felem_add(group, &gamma, &gamma, &gamma);
+    ec_GFp_mont_felem_sqr(group, &gamma, &gamma);
+    ec_GFp_mont_felem_mul(group, &r->Y, &alpha, &r->Y);
+    ec_felem_add(group, &gamma, &gamma, &gamma);
+    ec_felem_sub(group, &r->Y, &r->Y, &gamma);
+  } else {
+    // The method is taken from:
+    //   http://www.hyperelliptic.org/EFD/g1p/auto-shortw-jacobian.html#doubling-dbl-2007-bl
+    //
+    // Coq transcription and correctness proof:
+    // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L102>
+    // <https://github.com/davidben/fiat-crypto/blob/c7b95f62b2a54b559522573310e9b487327d219a/src/Curves/Weierstrass/Jacobian.v#L534>
+    EC_FELEM xx, yy, yyyy, zz;
+    ec_GFp_mont_felem_sqr(group, &xx, &a->X);
+    ec_GFp_mont_felem_sqr(group, &yy, &a->Y);
+    ec_GFp_mont_felem_sqr(group, &yyyy, &yy);
+    ec_GFp_mont_felem_sqr(group, &zz, &a->Z);
+
+    // s = 2*((x_in + yy)^2 - xx - yyyy)
+    EC_FELEM s;
+    ec_felem_add(group, &s, &a->X, &yy);
+    ec_GFp_mont_felem_sqr(group, &s, &s);
+    ec_felem_sub(group, &s, &s, &xx);
+    ec_felem_sub(group, &s, &s, &yyyy);
+    ec_felem_add(group, &s, &s, &s);
+
+    // m = 3*xx + a*zz^2
+    EC_FELEM m;
+    ec_GFp_mont_felem_sqr(group, &m, &zz);
+    ec_GFp_mont_felem_mul(group, &m, &group->a, &m);
+    ec_felem_add(group, &m, &m, &xx);
+    ec_felem_add(group, &m, &m, &xx);
+    ec_felem_add(group, &m, &m, &xx);
+
+    // x_out = m^2 - 2*s
+    ec_GFp_mont_felem_sqr(group, &r->X, &m);
+    ec_felem_sub(group, &r->X, &r->X, &s);
+    ec_felem_sub(group, &r->X, &r->X, &s);
+
+    // z_out = (y_in + z_in)^2 - yy - zz
+    ec_felem_add(group, &r->Z, &a->Y, &a->Z);
+    ec_GFp_mont_felem_sqr(group, &r->Z, &r->Z);
+    ec_felem_sub(group, &r->Z, &r->Z, &yy);
+    ec_felem_sub(group, &r->Z, &r->Z, &zz);
+
+    // y_out = m*(s-x_out) - 8*yyyy
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_add(group, &yyyy, &yyyy, &yyyy);
+    ec_felem_sub(group, &r->Y, &s, &r->X);
+    ec_GFp_mont_felem_mul(group, &r->Y, &r->Y, &m);
+    ec_felem_sub(group, &r->Y, &r->Y, &yyyy);
+  }
+}
+
+static int ec_GFp_mont_cmp_x_coordinate(const EC_GROUP *group,
+                                        const EC_RAW_POINT *p,
+                                        const EC_SCALAR *r) {
+  if (!group->field_greater_than_order ||
+      group->field.width != group->order.width) {
+    // Do not bother optimizing this case. p > order in all commonly-used
+    // curves.
+    return ec_GFp_simple_cmp_x_coordinate(group, p, r);
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  EC_FELEM r_Z2, Z2_mont, X;
+  ec_GFp_mont_felem_mul(group, &Z2_mont, &p->Z, &p->Z);
+  // r < order < p, so this is valid.
+  OPENSSL_memcpy(r_Z2.words, r->words, group->field.width * sizeof(BN_ULONG));
+  ec_GFp_mont_felem_mul(group, &r_Z2, &r_Z2, &Z2_mont);
+  ec_GFp_mont_felem_from_montgomery(group, &X, &p->X);
+
+  if (ec_felem_equal(group, &r_Z2, &X)) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         group->field.width)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    bn_add_words(r_Z2.words, r->words, group->order.d, group->field.width);
+    ec_GFp_mont_felem_mul(group, &r_Z2, &r_Z2, &Z2_mont);
+    if (ec_felem_equal(group, &r_Z2, &X)) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_mont_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates = ec_GFp_mont_point_get_affine_coordinates;
+  out->add = ec_GFp_mont_add;
+  out->dbl = ec_GFp_mont_dbl;
+  out->mul = ec_GFp_mont_mul;
+  out->mul_base = ec_GFp_mont_mul_base;
+  out->mul_public = ec_GFp_mont_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_mont_cmp_x_coordinate;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c
new file mode 100644
index 0000000..88ff4a2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c	
@@ -0,0 +1,82 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+int ec_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out, const BIGNUM *in) {
+  if (BN_is_negative(in) || BN_cmp(in, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_COORDINATES_OUT_OF_RANGE);
+    return 0;
+  }
+  return group->meth->bignum_to_felem(group, out, in);
+}
+
+int ec_felem_to_bignum(const EC_GROUP *group, BIGNUM *out, const EC_FELEM *in) {
+  return group->meth->felem_to_bignum(group, out, in);
+}
+
+void ec_felem_neg(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a) {
+  // -a is zero if a is zero and p-a otherwise.
+  BN_ULONG mask = ec_felem_non_zero_mask(group, a);
+  BN_ULONG borrow =
+      bn_sub_words(out->words, group->field.d, a->words, group->field.width);
+  assert(borrow == 0);
+  (void)borrow;
+  for (int i = 0; i < group->field.width; i++) {
+    out->words[i] &= mask;
+  }
+}
+
+void ec_felem_add(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b) {
+  EC_FELEM tmp;
+  bn_mod_add_words(out->words, a->words, b->words, group->field.d, tmp.words,
+                   group->field.width);
+}
+
+void ec_felem_sub(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b) {
+  EC_FELEM tmp;
+  bn_mod_sub_words(out->words, a->words, b->words, group->field.d, tmp.words,
+                   group->field.width);
+}
+
+BN_ULONG ec_felem_non_zero_mask(const EC_GROUP *group, const EC_FELEM *a) {
+  BN_ULONG mask = 0;
+  for (int i = 0; i < group->field.width; i++) {
+    mask |= a->words[i];
+  }
+  return ~constant_time_is_zero_w(mask);
+}
+
+void ec_felem_select(const EC_GROUP *group, EC_FELEM *out, BN_ULONG mask,
+                     const EC_FELEM *a, const EC_FELEM *b) {
+  bn_select_words(out->words, mask, a->words, b->words, group->field.width);
+}
+
+int ec_felem_equal(const EC_GROUP *group, const EC_FELEM *a,
+                   const EC_FELEM *b) {
+  // Note this function is variable-time. Constant-time operations should use
+  // |ec_felem_non_zero_mask|.
+  return OPENSSL_memcmp(a->words, b->words,
+                        group->field.width * sizeof(BN_ULONG)) == 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c.grpc_back
new file mode 100644
index 0000000..9be9f8c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/felem.c.grpc_back	
@@ -0,0 +1,82 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ec.h>
+#include <openssl/err.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+int ec_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out, const BIGNUM *in) {
+  if (BN_is_negative(in) || BN_cmp(in, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_COORDINATES_OUT_OF_RANGE);
+    return 0;
+  }
+  return group->meth->bignum_to_felem(group, out, in);
+}
+
+int ec_felem_to_bignum(const EC_GROUP *group, BIGNUM *out, const EC_FELEM *in) {
+  return group->meth->felem_to_bignum(group, out, in);
+}
+
+void ec_felem_neg(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a) {
+  // -a is zero if a is zero and p-a otherwise.
+  BN_ULONG mask = ec_felem_non_zero_mask(group, a);
+  BN_ULONG borrow =
+      bn_sub_words(out->words, group->field.d, a->words, group->field.width);
+  assert(borrow == 0);
+  (void)borrow;
+  for (int i = 0; i < group->field.width; i++) {
+    out->words[i] &= mask;
+  }
+}
+
+void ec_felem_add(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b) {
+  EC_FELEM tmp;
+  bn_mod_add_words(out->words, a->words, b->words, group->field.d, tmp.words,
+                   group->field.width);
+}
+
+void ec_felem_sub(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b) {
+  EC_FELEM tmp;
+  bn_mod_sub_words(out->words, a->words, b->words, group->field.d, tmp.words,
+                   group->field.width);
+}
+
+BN_ULONG ec_felem_non_zero_mask(const EC_GROUP *group, const EC_FELEM *a) {
+  BN_ULONG mask = 0;
+  for (int i = 0; i < group->field.width; i++) {
+    mask |= a->words[i];
+  }
+  return ~constant_time_is_zero_w(mask);
+}
+
+void ec_felem_select(const EC_GROUP *group, EC_FELEM *out, BN_ULONG mask,
+                     const EC_FELEM *a, const EC_FELEM *b) {
+  bn_select_words(out->words, mask, a->words, b->words, group->field.width);
+}
+
+int ec_felem_equal(const EC_GROUP *group, const EC_FELEM *a,
+                   const EC_FELEM *b) {
+  // Note this function is variable-time. Constant-time operations should use
+  // |ec_felem_non_zero_mask|.
+  return OPENSSL_memcmp(a->words, b->words,
+                        group->field.width * sizeof(BN_ULONG)) == 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h
new file mode 100644
index 0000000..6396e5c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h	
@@ -0,0 +1,503 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_INTERNAL_H
+#define OPENSSL_HEADER_EC_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/type_check.h>
+
+#include "../bn/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Cap the size of all field elements and scalars, including custom curves, to
+// 66 bytes, large enough to fit secp521r1 and brainpoolP512r1, which appear to
+// be the largest fields anyone plausibly uses.
+#define EC_MAX_BYTES 66
+#define EC_MAX_WORDS ((EC_MAX_BYTES + BN_BYTES - 1) / BN_BYTES)
+
+OPENSSL_STATIC_ASSERT(EC_MAX_WORDS <= BN_SMALL_MAX_WORDS,
+                      "bn_*_small functions not usable");
+
+// An EC_SCALAR is an integer fully reduced modulo the order. Only the first
+// |order->width| words are used. An |EC_SCALAR| is specific to an |EC_GROUP|
+// and must not be mixed between groups.
+typedef union {
+  // bytes is the representation of the scalar in little-endian order.
+  uint8_t bytes[EC_MAX_BYTES];
+  BN_ULONG words[EC_MAX_WORDS];
+} EC_SCALAR;
+
+// An EC_FELEM represents a field element. Only the first |field->width| words
+// are used. An |EC_FELEM| is specific to an |EC_GROUP| and must not be mixed
+// between groups. Additionally, the representation (whether or not elements are
+// represented in Montgomery-form) may vary between |EC_METHOD|s.
+typedef union {
+  // bytes is the representation of the field element in little-endian order.
+  uint8_t bytes[EC_MAX_BYTES];
+  BN_ULONG words[EC_MAX_WORDS];
+} EC_FELEM;
+
+// An EC_RAW_POINT represents an elliptic curve point. Unlike |EC_POINT|, it is
+// a plain struct which can be stack-allocated and needs no cleanup. It is
+// specific to an |EC_GROUP| and must not be mixed between groups.
+typedef struct {
+  EC_FELEM X, Y, Z;
+  // X, Y, and Z are Jacobian projective coordinates. They represent
+  // (X/Z^2, Y/Z^3) if Z != 0 and the point at infinity otherwise.
+} EC_RAW_POINT;
+
+struct ec_method_st {
+  int (*group_init)(EC_GROUP *);
+  void (*group_finish)(EC_GROUP *);
+  int (*group_set_curve)(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                         const BIGNUM *b, BN_CTX *);
+
+  // point_get_affine_coordinates sets |*x| and |*y| to the affine coordinates
+  // of |p|. Either |x| or |y| may be NULL to omit it. It returns one on success
+  // and zero if |p| is the point at infinity.
+  //
+  // Note: unlike |EC_FELEM|s used as intermediate values internal to the
+  // |EC_METHOD|, |*x| and |*y| are not encoded in Montgomery form.
+  int (*point_get_affine_coordinates)(const EC_GROUP *, const EC_RAW_POINT *p,
+                                      EC_FELEM *x, EC_FELEM *y);
+
+  // add sets |r| to |a| + |b|.
+  void (*add)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *a,
+              const EC_RAW_POINT *b);
+  // dbl sets |r| to |a| + |a|.
+  void (*dbl)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *a);
+
+  // mul sets |r| to |scalar|*|p|.
+  void (*mul)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *p,
+              const EC_SCALAR *scalar);
+  // mul_base sets |r| to |scalar|*generator.
+  void (*mul_base)(const EC_GROUP *group, EC_RAW_POINT *r,
+                   const EC_SCALAR *scalar);
+  // mul_public sets |r| to |g_scalar|*generator + |p_scalar|*|p|. It assumes
+  // that the inputs are public so there is no concern about leaking their
+  // values through timing.
+  void (*mul_public)(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                     const EC_SCALAR *p_scalar);
+
+  // felem_mul and felem_sqr implement multiplication and squaring,
+  // respectively, so that the generic |EC_POINT_add| and |EC_POINT_dbl|
+  // implementations can work both with |EC_GFp_mont_method| and the tuned
+  // operations.
+  //
+  // TODO(davidben): This constrains |EC_FELEM|'s internal representation, adds
+  // many indirect calls in the middle of the generic code, and a bunch of
+  // conversions. If p224-64.c were easily convertable to Montgomery form, we
+  // could say |EC_FELEM| is always in Montgomery form. If we routed the rest of
+  // simple.c to |EC_METHOD|, we could give |EC_POINT| an |EC_METHOD|-specific
+  // representation and say |EC_FELEM| is purely a |EC_GFp_mont_method| type.
+  void (*felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                    const EC_FELEM *b);
+  void (*felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a);
+
+  int (*bignum_to_felem)(const EC_GROUP *group, EC_FELEM *out,
+                         const BIGNUM *in);
+  int (*felem_to_bignum)(const EC_GROUP *group, BIGNUM *out,
+                         const EC_FELEM *in);
+
+  // scalar_inv_montgomery sets |out| to |in|^-1, where both input and output
+  // are in Montgomery form.
+  void (*scalar_inv_montgomery)(const EC_GROUP *group, EC_SCALAR *out,
+                                const EC_SCALAR *in);
+
+  // scalar_inv_montgomery_vartime performs the same computation as
+  // |scalar_inv_montgomery|. It further assumes that the inputs are public so
+  // there is no concern about leaking their values through timing.
+  int (*scalar_inv_montgomery_vartime)(const EC_GROUP *group, EC_SCALAR *out,
+                                       const EC_SCALAR *in);
+
+  // cmp_x_coordinate compares the x (affine) coordinate of |p|, mod the group
+  // order, with |r|. It returns one if the values match and zero if |p| is the
+  // point at infinity of the values do not match.
+  int (*cmp_x_coordinate)(const EC_GROUP *group, const EC_RAW_POINT *p,
+                          const EC_SCALAR *r);
+} /* EC_METHOD */;
+
+const EC_METHOD *EC_GFp_mont_method(void);
+
+struct ec_group_st {
+  const EC_METHOD *meth;
+
+  // Unlike all other |EC_POINT|s, |generator| does not own |generator->group|
+  // to avoid a reference cycle.
+  EC_POINT *generator;
+  BIGNUM order;
+
+  int curve_name;  // optional NID for named curve
+
+  BN_MONT_CTX *order_mont;  // data for ECDSA inverse
+
+  // The following members are handled by the method functions,
+  // even if they appear generic
+
+  BIGNUM field;  // For curves over GF(p), this is the modulus.
+
+  EC_FELEM a, b;  // Curve coefficients.
+
+  // a_is_minus3 is one if |a| is -3 mod |field| and zero otherwise. Point
+  // arithmetic is optimized for -3.
+  int a_is_minus3;
+
+  // field_greater_than_order is one if |field| is greate than |order| and zero
+  // otherwise.
+  int field_greater_than_order;
+
+  // field_minus_order, if |field_greater_than_order| is true, is |field| minus
+  // |order| represented as an |EC_FELEM|. Otherwise, it is zero.
+  //
+  // Note: unlike |EC_FELEM|s used as intermediate values internal to the
+  // |EC_METHOD|, this value is not encoded in Montgomery form.
+  EC_FELEM field_minus_order;
+
+  CRYPTO_refcount_t references;
+
+  BN_MONT_CTX *mont;  // Montgomery structure.
+
+  EC_FELEM one;  // The value one.
+} /* EC_GROUP */;
+
+struct ec_point_st {
+  // group is an owning reference to |group|, unless this is
+  // |group->generator|.
+  EC_GROUP *group;
+  // raw is the group-specific point data. Functions that take |EC_POINT|
+  // typically check consistency with |EC_GROUP| while functions that take
+  // |EC_RAW_POINT| do not. Thus accesses to this field should be externally
+  // checked for consistency.
+  EC_RAW_POINT raw;
+} /* EC_POINT */;
+
+EC_GROUP *ec_group_new(const EC_METHOD *meth);
+
+// ec_bignum_to_felem converts |in| to an |EC_FELEM|. It returns one on success
+// and zero if |in| is out of range.
+int ec_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out, const BIGNUM *in);
+
+// ec_felem_to_bignum converts |in| to a |BIGNUM|. It returns one on success and
+// zero on allocation failure.
+int ec_felem_to_bignum(const EC_GROUP *group, BIGNUM *out, const EC_FELEM *in);
+
+// ec_felem_neg sets |out| to -|a|.
+void ec_felem_neg(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a);
+
+// ec_felem_add sets |out| to |a| + |b|.
+void ec_felem_add(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b);
+
+// ec_felem_add sets |out| to |a| - |b|.
+void ec_felem_sub(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b);
+
+// ec_felem_non_zero_mask returns all ones if |a| is non-zero and all zeros
+// otherwise.
+BN_ULONG ec_felem_non_zero_mask(const EC_GROUP *group, const EC_FELEM *a);
+
+// ec_felem_select, in constant time, sets |out| to |a| if |mask| is all ones
+// and |b| if |mask| is all zeros.
+void ec_felem_select(const EC_GROUP *group, EC_FELEM *out, BN_ULONG mask,
+                     const EC_FELEM *a, const EC_FELEM *b);
+
+// ec_felem_equal returns one if |a| and |b| are equal and zero otherwise. It
+// treats |a| and |b| as public and does *not* run in constant time.
+int ec_felem_equal(const EC_GROUP *group, const EC_FELEM *a, const EC_FELEM *b);
+
+// ec_bignum_to_scalar converts |in| to an |EC_SCALAR| and writes it to
+// |*out|. It returns one on success and zero if |in| is out of range.
+OPENSSL_EXPORT int ec_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                       const BIGNUM *in);
+
+// ec_random_nonzero_scalar sets |out| to a uniformly selected random value from
+// 1 to |group->order| - 1. It returns one on success and zero on error.
+int ec_random_nonzero_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t additional_data[32]);
+
+// ec_scalar_equal_vartime returns one if |a| and |b| are equal and zero
+// otherwise. Both values are treated as public.
+int ec_scalar_equal_vartime(const EC_GROUP *group, const EC_SCALAR *a,
+                            const EC_SCALAR *b);
+
+// ec_scalar_is_zero returns one if |a| is zero and zero otherwise.
+int ec_scalar_is_zero(const EC_GROUP *group, const EC_SCALAR *a);
+
+// ec_scalar_add sets |r| to |a| + |b|.
+void ec_scalar_add(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
+                   const EC_SCALAR *b);
+
+// ec_scalar_to_montgomery sets |r| to |a| in Montgomery form.
+void ec_scalar_to_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                             const EC_SCALAR *a);
+
+// ec_scalar_to_montgomery sets |r| to |a| converted from Montgomery form.
+void ec_scalar_from_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                               const EC_SCALAR *a);
+
+// ec_scalar_mul_montgomery sets |r| to |a| * |b| where inputs and outputs are
+// in Montgomery form.
+void ec_scalar_mul_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a, const EC_SCALAR *b);
+
+// ec_scalar_mul_montgomery sets |r| to |a|^-1 where inputs and outputs are in
+// Montgomery form.
+void ec_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a);
+
+// ec_scalar_inv_montgomery_vartime performs the same actions as
+// |ec_scalar_inv_montgomery|, but in variable time.
+int ec_scalar_inv_montgomery_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a);
+
+// ec_point_mul_scalar sets |r| to |p| * |scalar|. Both inputs are considered
+// secret.
+int ec_point_mul_scalar(const EC_GROUP *group, EC_RAW_POINT *r,
+                        const EC_RAW_POINT *p, const EC_SCALAR *scalar);
+
+// ec_point_mul_scalar_base sets |r| to generator * |scalar|. |scalar| is
+// treated as secret.
+int ec_point_mul_scalar_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_SCALAR *scalar);
+
+// ec_point_mul_scalar_public performs the same computation as
+// ec_point_mul_scalar.  It further assumes that the inputs are public so
+// there is no concern about leaking their values through timing.
+OPENSSL_EXPORT int ec_point_mul_scalar_public(const EC_GROUP *group,
+                                              EC_RAW_POINT *r,
+                                              const EC_SCALAR *g_scalar,
+                                              const EC_RAW_POINT *p,
+                                              const EC_SCALAR *p_scalar);
+
+// ec_cmp_x_coordinate compares the x (affine) coordinate of |p|, mod the group
+// order, with |r|. It returns one if the values match and zero if |p| is the
+// point at infinity of the values do not match.
+int ec_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                        const EC_SCALAR *r);
+
+// ec_get_x_coordinate_as_scalar sets |*out| to |p|'s x-coordinate, modulo
+// |group->order|. It returns one on success and zero if |p| is the point at
+// infinity.
+int ec_get_x_coordinate_as_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                  const EC_RAW_POINT *p);
+
+// ec_point_get_affine_coordinate_bytes writes |p|'s affine coordinates to
+// |out_x| and |out_y|, each of which must have at must |max_out| bytes. It sets
+// |*out_len| to the number of bytes written in each buffer. Coordinates are
+// written big-endian and zero-padded to the size of the field.
+//
+// Either of |out_x| or |out_y| may be NULL to omit that coordinate. This
+// function returns one on success and zero on failure.
+int ec_point_get_affine_coordinate_bytes(const EC_GROUP *group, uint8_t *out_x,
+                                         uint8_t *out_y, size_t *out_len,
+                                         size_t max_out, const EC_RAW_POINT *p);
+
+// ec_field_element_to_scalar reduces |r| modulo |group->order|. |r| must
+// previously have been reduced modulo |group->field|.
+int ec_field_element_to_scalar(const EC_GROUP *group, BIGNUM *r);
+
+void ec_GFp_mont_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *p, const EC_SCALAR *scalar);
+void ec_GFp_mont_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                          const EC_SCALAR *scalar);
+
+// ec_compute_wNAF writes the modified width-(w+1) Non-Adjacent Form (wNAF) of
+// |scalar| to |out|. |out| must have room for |bits| + 1 elements, each of
+// which will be either zero or odd with an absolute value less than  2^w
+// satisfying
+//     scalar = \sum_j out[j]*2^j
+// where at most one of any  w+1  consecutive digits is non-zero
+// with the exception that the most significant digit may be only
+// w-1 zeros away from that next non-zero digit.
+void ec_compute_wNAF(const EC_GROUP *group, int8_t *out,
+                     const EC_SCALAR *scalar, size_t bits, int w);
+
+void ec_GFp_mont_mul_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                            const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                            const EC_SCALAR *p_scalar);
+
+// method functions in simple.c
+int ec_GFp_simple_group_init(EC_GROUP *);
+void ec_GFp_simple_group_finish(EC_GROUP *);
+int ec_GFp_simple_group_set_curve(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                                  const BIGNUM *b, BN_CTX *);
+int ec_GFp_simple_group_get_curve(const EC_GROUP *, BIGNUM *p, BIGNUM *a,
+                                  BIGNUM *b);
+void ec_GFp_simple_point_init(EC_RAW_POINT *);
+void ec_GFp_simple_point_copy(EC_RAW_POINT *, const EC_RAW_POINT *);
+void ec_GFp_simple_point_set_to_infinity(const EC_GROUP *, EC_RAW_POINT *);
+int ec_GFp_simple_point_set_affine_coordinates(const EC_GROUP *, EC_RAW_POINT *,
+                                               const BIGNUM *x,
+                                               const BIGNUM *y);
+void ec_GFp_mont_add(const EC_GROUP *, EC_RAW_POINT *r, const EC_RAW_POINT *a,
+                     const EC_RAW_POINT *b);
+void ec_GFp_mont_dbl(const EC_GROUP *, EC_RAW_POINT *r, const EC_RAW_POINT *a);
+void ec_GFp_simple_invert(const EC_GROUP *, EC_RAW_POINT *);
+int ec_GFp_simple_is_at_infinity(const EC_GROUP *, const EC_RAW_POINT *);
+int ec_GFp_simple_is_on_curve(const EC_GROUP *, const EC_RAW_POINT *);
+int ec_GFp_simple_cmp(const EC_GROUP *, const EC_RAW_POINT *a,
+                      const EC_RAW_POINT *b);
+void ec_simple_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a);
+
+int ec_GFp_simple_mont_inv_mod_ord_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                           const EC_SCALAR *a);
+
+int ec_GFp_simple_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                                   const EC_SCALAR *r);
+
+// method functions in montgomery.c
+int ec_GFp_mont_group_init(EC_GROUP *);
+int ec_GFp_mont_group_set_curve(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                                const BIGNUM *b, BN_CTX *);
+void ec_GFp_mont_group_finish(EC_GROUP *);
+void ec_GFp_mont_felem_mul(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                           const EC_FELEM *b);
+void ec_GFp_mont_felem_sqr(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a);
+
+int ec_GFp_mont_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                const BIGNUM *in);
+int ec_GFp_mont_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                const EC_FELEM *in);
+
+void ec_GFp_nistp_recode_scalar_bits(uint8_t *sign, uint8_t *digit, uint8_t in);
+
+const EC_METHOD *EC_GFp_nistp224_method(void);
+const EC_METHOD *EC_GFp_nistp256_method(void);
+
+// EC_GFp_nistz256_method is a GFp method using montgomery multiplication, with
+// x86-64 optimized P256. See http://eprint.iacr.org/2013/816.
+const EC_METHOD *EC_GFp_nistz256_method(void);
+
+// An EC_WRAPPED_SCALAR is an |EC_SCALAR| with a parallel |BIGNUM|
+// representation. It exists to support the |EC_KEY_get0_private_key| API.
+typedef struct {
+  BIGNUM bignum;
+  EC_SCALAR scalar;
+} EC_WRAPPED_SCALAR;
+
+struct ec_key_st {
+  EC_GROUP *group;
+
+  EC_POINT *pub_key;
+  EC_WRAPPED_SCALAR *priv_key;
+
+  // fixed_k may contain a specific value of 'k', to be used in ECDSA signing.
+  // This is only for the FIPS power-on tests.
+  BIGNUM *fixed_k;
+
+  unsigned int enc_flag;
+  point_conversion_form_t conv_form;
+
+  CRYPTO_refcount_t references;
+
+  ECDSA_METHOD *ecdsa_meth;
+
+  CRYPTO_EX_DATA ex_data;
+} /* EC_KEY */;
+
+struct built_in_curve {
+  int nid;
+  const uint8_t *oid;
+  uint8_t oid_len;
+  // comment is a human-readable string describing the curve.
+  const char *comment;
+  // param_len is the number of bytes needed to store a field element.
+  uint8_t param_len;
+  // params points to an array of 6*|param_len| bytes which hold the field
+  // elements of the following (in big-endian order): prime, a, b, generator x,
+  // generator y, order.
+  const uint8_t *params;
+  const EC_METHOD *method;
+};
+
+#define OPENSSL_NUM_BUILT_IN_CURVES 4
+
+struct built_in_curves {
+  struct built_in_curve curves[OPENSSL_NUM_BUILT_IN_CURVES];
+};
+
+// OPENSSL_built_in_curves returns a pointer to static information about
+// standard curves. The array is terminated with an entry where |nid| is
+// |NID_undef|.
+const struct built_in_curves *OPENSSL_built_in_curves(void);
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EC_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h.grpc_back
new file mode 100644
index 0000000..7934c3a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/internal.h.grpc_back	
@@ -0,0 +1,503 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_INTERNAL_H
+#define OPENSSL_HEADER_EC_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/bn.h>
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+#include <openssl/type_check.h>
+
+#include "../bn/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Cap the size of all field elements and scalars, including custom curves, to
+// 66 bytes, large enough to fit secp521r1 and brainpoolP512r1, which appear to
+// be the largest fields anyone plausibly uses.
+#define EC_MAX_BYTES 66
+#define EC_MAX_WORDS ((EC_MAX_BYTES + BN_BYTES - 1) / BN_BYTES)
+
+OPENSSL_STATIC_ASSERT(EC_MAX_WORDS <= BN_SMALL_MAX_WORDS,
+                      "bn_*_small functions not usable");
+
+// An EC_SCALAR is an integer fully reduced modulo the order. Only the first
+// |order->width| words are used. An |EC_SCALAR| is specific to an |EC_GROUP|
+// and must not be mixed between groups.
+typedef union {
+  // bytes is the representation of the scalar in little-endian order.
+  uint8_t bytes[EC_MAX_BYTES];
+  BN_ULONG words[EC_MAX_WORDS];
+} EC_SCALAR;
+
+// An EC_FELEM represents a field element. Only the first |field->width| words
+// are used. An |EC_FELEM| is specific to an |EC_GROUP| and must not be mixed
+// between groups. Additionally, the representation (whether or not elements are
+// represented in Montgomery-form) may vary between |EC_METHOD|s.
+typedef union {
+  // bytes is the representation of the field element in little-endian order.
+  uint8_t bytes[EC_MAX_BYTES];
+  BN_ULONG words[EC_MAX_WORDS];
+} EC_FELEM;
+
+// An EC_RAW_POINT represents an elliptic curve point. Unlike |EC_POINT|, it is
+// a plain struct which can be stack-allocated and needs no cleanup. It is
+// specific to an |EC_GROUP| and must not be mixed between groups.
+typedef struct {
+  EC_FELEM X, Y, Z;
+  // X, Y, and Z are Jacobian projective coordinates. They represent
+  // (X/Z^2, Y/Z^3) if Z != 0 and the point at infinity otherwise.
+} EC_RAW_POINT;
+
+struct ec_method_st {
+  int (*group_init)(EC_GROUP *);
+  void (*group_finish)(EC_GROUP *);
+  int (*group_set_curve)(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                         const BIGNUM *b, BN_CTX *);
+
+  // point_get_affine_coordinates sets |*x| and |*y| to the affine coordinates
+  // of |p|. Either |x| or |y| may be NULL to omit it. It returns one on success
+  // and zero if |p| is the point at infinity.
+  //
+  // Note: unlike |EC_FELEM|s used as intermediate values internal to the
+  // |EC_METHOD|, |*x| and |*y| are not encoded in Montgomery form.
+  int (*point_get_affine_coordinates)(const EC_GROUP *, const EC_RAW_POINT *p,
+                                      EC_FELEM *x, EC_FELEM *y);
+
+  // add sets |r| to |a| + |b|.
+  void (*add)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *a,
+              const EC_RAW_POINT *b);
+  // dbl sets |r| to |a| + |a|.
+  void (*dbl)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *a);
+
+  // mul sets |r| to |scalar|*|p|.
+  void (*mul)(const EC_GROUP *group, EC_RAW_POINT *r, const EC_RAW_POINT *p,
+              const EC_SCALAR *scalar);
+  // mul_base sets |r| to |scalar|*generator.
+  void (*mul_base)(const EC_GROUP *group, EC_RAW_POINT *r,
+                   const EC_SCALAR *scalar);
+  // mul_public sets |r| to |g_scalar|*generator + |p_scalar|*|p|. It assumes
+  // that the inputs are public so there is no concern about leaking their
+  // values through timing.
+  void (*mul_public)(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                     const EC_SCALAR *p_scalar);
+
+  // felem_mul and felem_sqr implement multiplication and squaring,
+  // respectively, so that the generic |EC_POINT_add| and |EC_POINT_dbl|
+  // implementations can work both with |EC_GFp_mont_method| and the tuned
+  // operations.
+  //
+  // TODO(davidben): This constrains |EC_FELEM|'s internal representation, adds
+  // many indirect calls in the middle of the generic code, and a bunch of
+  // conversions. If p224-64.c were easily convertable to Montgomery form, we
+  // could say |EC_FELEM| is always in Montgomery form. If we routed the rest of
+  // simple.c to |EC_METHOD|, we could give |EC_POINT| an |EC_METHOD|-specific
+  // representation and say |EC_FELEM| is purely a |EC_GFp_mont_method| type.
+  void (*felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                    const EC_FELEM *b);
+  void (*felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a);
+
+  int (*bignum_to_felem)(const EC_GROUP *group, EC_FELEM *out,
+                         const BIGNUM *in);
+  int (*felem_to_bignum)(const EC_GROUP *group, BIGNUM *out,
+                         const EC_FELEM *in);
+
+  // scalar_inv_montgomery sets |out| to |in|^-1, where both input and output
+  // are in Montgomery form.
+  void (*scalar_inv_montgomery)(const EC_GROUP *group, EC_SCALAR *out,
+                                const EC_SCALAR *in);
+
+  // scalar_inv_montgomery_vartime performs the same computation as
+  // |scalar_inv_montgomery|. It further assumes that the inputs are public so
+  // there is no concern about leaking their values through timing.
+  int (*scalar_inv_montgomery_vartime)(const EC_GROUP *group, EC_SCALAR *out,
+                                       const EC_SCALAR *in);
+
+  // cmp_x_coordinate compares the x (affine) coordinate of |p|, mod the group
+  // order, with |r|. It returns one if the values match and zero if |p| is the
+  // point at infinity of the values do not match.
+  int (*cmp_x_coordinate)(const EC_GROUP *group, const EC_RAW_POINT *p,
+                          const EC_SCALAR *r);
+} /* EC_METHOD */;
+
+const EC_METHOD *EC_GFp_mont_method(void);
+
+struct ec_group_st {
+  const EC_METHOD *meth;
+
+  // Unlike all other |EC_POINT|s, |generator| does not own |generator->group|
+  // to avoid a reference cycle.
+  EC_POINT *generator;
+  BIGNUM order;
+
+  int curve_name;  // optional NID for named curve
+
+  BN_MONT_CTX *order_mont;  // data for ECDSA inverse
+
+  // The following members are handled by the method functions,
+  // even if they appear generic
+
+  BIGNUM field;  // For curves over GF(p), this is the modulus.
+
+  EC_FELEM a, b;  // Curve coefficients.
+
+  // a_is_minus3 is one if |a| is -3 mod |field| and zero otherwise. Point
+  // arithmetic is optimized for -3.
+  int a_is_minus3;
+
+  // field_greater_than_order is one if |field| is greate than |order| and zero
+  // otherwise.
+  int field_greater_than_order;
+
+  // field_minus_order, if |field_greater_than_order| is true, is |field| minus
+  // |order| represented as an |EC_FELEM|. Otherwise, it is zero.
+  //
+  // Note: unlike |EC_FELEM|s used as intermediate values internal to the
+  // |EC_METHOD|, this value is not encoded in Montgomery form.
+  EC_FELEM field_minus_order;
+
+  CRYPTO_refcount_t references;
+
+  BN_MONT_CTX *mont;  // Montgomery structure.
+
+  EC_FELEM one;  // The value one.
+} /* EC_GROUP */;
+
+struct ec_point_st {
+  // group is an owning reference to |group|, unless this is
+  // |group->generator|.
+  EC_GROUP *group;
+  // raw is the group-specific point data. Functions that take |EC_POINT|
+  // typically check consistency with |EC_GROUP| while functions that take
+  // |EC_RAW_POINT| do not. Thus accesses to this field should be externally
+  // checked for consistency.
+  EC_RAW_POINT raw;
+} /* EC_POINT */;
+
+EC_GROUP *ec_group_new(const EC_METHOD *meth);
+
+// ec_bignum_to_felem converts |in| to an |EC_FELEM|. It returns one on success
+// and zero if |in| is out of range.
+int ec_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out, const BIGNUM *in);
+
+// ec_felem_to_bignum converts |in| to a |BIGNUM|. It returns one on success and
+// zero on allocation failure.
+int ec_felem_to_bignum(const EC_GROUP *group, BIGNUM *out, const EC_FELEM *in);
+
+// ec_felem_neg sets |out| to -|a|.
+void ec_felem_neg(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a);
+
+// ec_felem_add sets |out| to |a| + |b|.
+void ec_felem_add(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b);
+
+// ec_felem_add sets |out| to |a| - |b|.
+void ec_felem_sub(const EC_GROUP *group, EC_FELEM *out, const EC_FELEM *a,
+                  const EC_FELEM *b);
+
+// ec_felem_non_zero_mask returns all ones if |a| is non-zero and all zeros
+// otherwise.
+BN_ULONG ec_felem_non_zero_mask(const EC_GROUP *group, const EC_FELEM *a);
+
+// ec_felem_select, in constant time, sets |out| to |a| if |mask| is all ones
+// and |b| if |mask| is all zeros.
+void ec_felem_select(const EC_GROUP *group, EC_FELEM *out, BN_ULONG mask,
+                     const EC_FELEM *a, const EC_FELEM *b);
+
+// ec_felem_equal returns one if |a| and |b| are equal and zero otherwise. It
+// treats |a| and |b| as public and does *not* run in constant time.
+int ec_felem_equal(const EC_GROUP *group, const EC_FELEM *a, const EC_FELEM *b);
+
+// ec_bignum_to_scalar converts |in| to an |EC_SCALAR| and writes it to
+// |*out|. It returns one on success and zero if |in| is out of range.
+OPENSSL_EXPORT int ec_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                       const BIGNUM *in);
+
+// ec_random_nonzero_scalar sets |out| to a uniformly selected random value from
+// 1 to |group->order| - 1. It returns one on success and zero on error.
+int ec_random_nonzero_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t additional_data[32]);
+
+// ec_scalar_equal_vartime returns one if |a| and |b| are equal and zero
+// otherwise. Both values are treated as public.
+int ec_scalar_equal_vartime(const EC_GROUP *group, const EC_SCALAR *a,
+                            const EC_SCALAR *b);
+
+// ec_scalar_is_zero returns one if |a| is zero and zero otherwise.
+int ec_scalar_is_zero(const EC_GROUP *group, const EC_SCALAR *a);
+
+// ec_scalar_add sets |r| to |a| + |b|.
+void ec_scalar_add(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
+                   const EC_SCALAR *b);
+
+// ec_scalar_to_montgomery sets |r| to |a| in Montgomery form.
+void ec_scalar_to_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                             const EC_SCALAR *a);
+
+// ec_scalar_to_montgomery sets |r| to |a| converted from Montgomery form.
+void ec_scalar_from_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                               const EC_SCALAR *a);
+
+// ec_scalar_mul_montgomery sets |r| to |a| * |b| where inputs and outputs are
+// in Montgomery form.
+void ec_scalar_mul_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a, const EC_SCALAR *b);
+
+// ec_scalar_mul_montgomery sets |r| to |a|^-1 where inputs and outputs are in
+// Montgomery form.
+void ec_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a);
+
+// ec_scalar_inv_montgomery_vartime performs the same actions as
+// |ec_scalar_inv_montgomery|, but in variable time.
+int ec_scalar_inv_montgomery_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a);
+
+// ec_point_mul_scalar sets |r| to |p| * |scalar|. Both inputs are considered
+// secret.
+int ec_point_mul_scalar(const EC_GROUP *group, EC_RAW_POINT *r,
+                        const EC_RAW_POINT *p, const EC_SCALAR *scalar);
+
+// ec_point_mul_scalar_base sets |r| to generator * |scalar|. |scalar| is
+// treated as secret.
+int ec_point_mul_scalar_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_SCALAR *scalar);
+
+// ec_point_mul_scalar_public performs the same computation as
+// ec_point_mul_scalar.  It further assumes that the inputs are public so
+// there is no concern about leaking their values through timing.
+OPENSSL_EXPORT int ec_point_mul_scalar_public(const EC_GROUP *group,
+                                              EC_RAW_POINT *r,
+                                              const EC_SCALAR *g_scalar,
+                                              const EC_RAW_POINT *p,
+                                              const EC_SCALAR *p_scalar);
+
+// ec_cmp_x_coordinate compares the x (affine) coordinate of |p|, mod the group
+// order, with |r|. It returns one if the values match and zero if |p| is the
+// point at infinity of the values do not match.
+int ec_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                        const EC_SCALAR *r);
+
+// ec_get_x_coordinate_as_scalar sets |*out| to |p|'s x-coordinate, modulo
+// |group->order|. It returns one on success and zero if |p| is the point at
+// infinity.
+int ec_get_x_coordinate_as_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                                  const EC_RAW_POINT *p);
+
+// ec_point_get_affine_coordinate_bytes writes |p|'s affine coordinates to
+// |out_x| and |out_y|, each of which must have at must |max_out| bytes. It sets
+// |*out_len| to the number of bytes written in each buffer. Coordinates are
+// written big-endian and zero-padded to the size of the field.
+//
+// Either of |out_x| or |out_y| may be NULL to omit that coordinate. This
+// function returns one on success and zero on failure.
+int ec_point_get_affine_coordinate_bytes(const EC_GROUP *group, uint8_t *out_x,
+                                         uint8_t *out_y, size_t *out_len,
+                                         size_t max_out, const EC_RAW_POINT *p);
+
+// ec_field_element_to_scalar reduces |r| modulo |group->order|. |r| must
+// previously have been reduced modulo |group->field|.
+int ec_field_element_to_scalar(const EC_GROUP *group, BIGNUM *r);
+
+void ec_GFp_mont_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *p, const EC_SCALAR *scalar);
+void ec_GFp_mont_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                          const EC_SCALAR *scalar);
+
+// ec_compute_wNAF writes the modified width-(w+1) Non-Adjacent Form (wNAF) of
+// |scalar| to |out|. |out| must have room for |bits| + 1 elements, each of
+// which will be either zero or odd with an absolute value less than  2^w
+// satisfying
+//     scalar = \sum_j out[j]*2^j
+// where at most one of any  w+1  consecutive digits is non-zero
+// with the exception that the most significant digit may be only
+// w-1 zeros away from that next non-zero digit.
+void ec_compute_wNAF(const EC_GROUP *group, int8_t *out,
+                     const EC_SCALAR *scalar, size_t bits, int w);
+
+void ec_GFp_mont_mul_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                            const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                            const EC_SCALAR *p_scalar);
+
+// method functions in simple.c
+int ec_GFp_simple_group_init(EC_GROUP *);
+void ec_GFp_simple_group_finish(EC_GROUP *);
+int ec_GFp_simple_group_set_curve(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                                  const BIGNUM *b, BN_CTX *);
+int ec_GFp_simple_group_get_curve(const EC_GROUP *, BIGNUM *p, BIGNUM *a,
+                                  BIGNUM *b);
+void ec_GFp_simple_point_init(EC_RAW_POINT *);
+void ec_GFp_simple_point_copy(EC_RAW_POINT *, const EC_RAW_POINT *);
+void ec_GFp_simple_point_set_to_infinity(const EC_GROUP *, EC_RAW_POINT *);
+int ec_GFp_simple_point_set_affine_coordinates(const EC_GROUP *, EC_RAW_POINT *,
+                                               const BIGNUM *x,
+                                               const BIGNUM *y);
+void ec_GFp_mont_add(const EC_GROUP *, EC_RAW_POINT *r, const EC_RAW_POINT *a,
+                     const EC_RAW_POINT *b);
+void ec_GFp_mont_dbl(const EC_GROUP *, EC_RAW_POINT *r, const EC_RAW_POINT *a);
+void ec_GFp_simple_invert(const EC_GROUP *, EC_RAW_POINT *);
+int ec_GFp_simple_is_at_infinity(const EC_GROUP *, const EC_RAW_POINT *);
+int ec_GFp_simple_is_on_curve(const EC_GROUP *, const EC_RAW_POINT *);
+int ec_GFp_simple_cmp(const EC_GROUP *, const EC_RAW_POINT *a,
+                      const EC_RAW_POINT *b);
+void ec_simple_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a);
+
+int ec_GFp_simple_mont_inv_mod_ord_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                           const EC_SCALAR *a);
+
+int ec_GFp_simple_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                                   const EC_SCALAR *r);
+
+// method functions in montgomery.c
+int ec_GFp_mont_group_init(EC_GROUP *);
+int ec_GFp_mont_group_set_curve(EC_GROUP *, const BIGNUM *p, const BIGNUM *a,
+                                const BIGNUM *b, BN_CTX *);
+void ec_GFp_mont_group_finish(EC_GROUP *);
+void ec_GFp_mont_felem_mul(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                           const EC_FELEM *b);
+void ec_GFp_mont_felem_sqr(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a);
+
+int ec_GFp_mont_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                const BIGNUM *in);
+int ec_GFp_mont_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                const EC_FELEM *in);
+
+void ec_GFp_nistp_recode_scalar_bits(uint8_t *sign, uint8_t *digit, uint8_t in);
+
+const EC_METHOD *EC_GFp_nistp224_method(void);
+const EC_METHOD *EC_GFp_nistp256_method(void);
+
+// EC_GFp_nistz256_method is a GFp method using montgomery multiplication, with
+// x86-64 optimized P256. See http://eprint.iacr.org/2013/816.
+const EC_METHOD *EC_GFp_nistz256_method(void);
+
+// An EC_WRAPPED_SCALAR is an |EC_SCALAR| with a parallel |BIGNUM|
+// representation. It exists to support the |EC_KEY_get0_private_key| API.
+typedef struct {
+  BIGNUM bignum;
+  EC_SCALAR scalar;
+} EC_WRAPPED_SCALAR;
+
+struct ec_key_st {
+  EC_GROUP *group;
+
+  EC_POINT *pub_key;
+  EC_WRAPPED_SCALAR *priv_key;
+
+  // fixed_k may contain a specific value of 'k', to be used in ECDSA signing.
+  // This is only for the FIPS power-on tests.
+  BIGNUM *fixed_k;
+
+  unsigned int enc_flag;
+  point_conversion_form_t conv_form;
+
+  CRYPTO_refcount_t references;
+
+  ECDSA_METHOD *ecdsa_meth;
+
+  CRYPTO_EX_DATA ex_data;
+} /* EC_KEY */;
+
+struct built_in_curve {
+  int nid;
+  const uint8_t *oid;
+  uint8_t oid_len;
+  // comment is a human-readable string describing the curve.
+  const char *comment;
+  // param_len is the number of bytes needed to store a field element.
+  uint8_t param_len;
+  // params points to an array of 6*|param_len| bytes which hold the field
+  // elements of the following (in big-endian order): prime, a, b, generator x,
+  // generator y, order.
+  const uint8_t *params;
+  const EC_METHOD *method;
+};
+
+#define OPENSSL_NUM_BUILT_IN_CURVES 4
+
+struct built_in_curves {
+  struct built_in_curve curves[OPENSSL_NUM_BUILT_IN_CURVES];
+};
+
+// OPENSSL_built_in_curves returns a pointer to static information about
+// standard curves. The array is terminated with an entry where |nid| is
+// |NID_undef|.
+const struct built_in_curves *OPENSSL_built_in_curves(void);
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EC_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c
new file mode 100644
index 0000000..aa42805
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c	
@@ -0,0 +1,336 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+static size_t ec_GFp_simple_point2oct(const EC_GROUP *group,
+                                      const EC_RAW_POINT *point,
+                                      point_conversion_form_t form,
+                                      uint8_t *buf, size_t len) {
+  if (form != POINT_CONVERSION_COMPRESSED &&
+      form != POINT_CONVERSION_UNCOMPRESSED) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FORM);
+    return 0;
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  const size_t field_len = BN_num_bytes(&group->field);
+  size_t output_len = 1 /* type byte */ + field_len;
+  if (form == POINT_CONVERSION_UNCOMPRESSED) {
+    // Uncompressed points have a second coordinate.
+    output_len += field_len;
+  }
+
+  // if 'buf' is NULL, just return required length
+  if (buf != NULL) {
+    if (len < output_len) {
+      OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+      return 0;
+    }
+
+    uint8_t y_buf[EC_MAX_BYTES];
+    size_t field_len_out;
+    if (!ec_point_get_affine_coordinate_bytes(
+            group, buf + 1 /* x */,
+            form == POINT_CONVERSION_COMPRESSED ? y_buf : buf + 1 + field_len,
+            &field_len_out, field_len, point)) {
+      return 0;
+    }
+
+    if (field_len_out != field_len) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+
+    if (form == POINT_CONVERSION_COMPRESSED) {
+      buf[0] = form + (y_buf[field_len - 1] & 1);
+    } else {
+      buf[0] = form;
+    }
+  }
+
+  return output_len;
+}
+
+static int ec_GFp_simple_oct2point(const EC_GROUP *group, EC_POINT *point,
+                                   const uint8_t *buf, size_t len,
+                                   BN_CTX *ctx) {
+  BN_CTX *new_ctx = NULL;
+  int ret = 0, used_ctx = 0;
+
+  if (len == 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+    goto err;
+  }
+
+  point_conversion_form_t form = buf[0];
+  const int y_bit = form & 1;
+  form = form & ~1U;
+  if ((form != POINT_CONVERSION_COMPRESSED &&
+       form != POINT_CONVERSION_UNCOMPRESSED) ||
+      (form == POINT_CONVERSION_UNCOMPRESSED && y_bit)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  const size_t field_len = BN_num_bytes(&group->field);
+  size_t enc_len = 1 /* type byte */ + field_len;
+  if (form == POINT_CONVERSION_UNCOMPRESSED) {
+    // Uncompressed points have a second coordinate.
+    enc_len += field_len;
+  }
+
+  if (len != enc_len) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      goto err;
+    }
+  }
+
+  BN_CTX_start(ctx);
+  used_ctx = 1;
+  BIGNUM *x = BN_CTX_get(ctx);
+  BIGNUM *y = BN_CTX_get(ctx);
+  if (x == NULL || y == NULL) {
+    goto err;
+  }
+
+  if (!BN_bin2bn(buf + 1, field_len, x)) {
+    goto err;
+  }
+  if (BN_ucmp(x, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  if (form == POINT_CONVERSION_COMPRESSED) {
+    if (!EC_POINT_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_bin2bn(buf + 1 + field_len, field_len, y)) {
+      goto err;
+    }
+    if (BN_ucmp(y, &group->field) >= 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+      goto err;
+    }
+
+    if (!EC_POINT_set_affine_coordinates_GFp(group, point, x, y, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  if (used_ctx) {
+    BN_CTX_end(ctx);
+  }
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
+                       const uint8_t *buf, size_t len, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_oct2point(group, point, buf, len, ctx);
+}
+
+size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point,
+                          point_conversion_form_t form, uint8_t *buf,
+                          size_t len, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_point2oct(group, &point->raw, form, buf, len);
+}
+
+int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
+                                            EC_POINT *point, const BIGNUM *x,
+                                            int y_bit, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  if (BN_is_negative(x) || BN_cmp(x, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSED_POINT);
+    return 0;
+  }
+
+  BN_CTX *new_ctx = NULL;
+  int ret = 0;
+
+  ERR_clear_error();
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  y_bit = (y_bit != 0);
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp1 = BN_CTX_get(ctx);
+  BIGNUM *tmp2 = BN_CTX_get(ctx);
+  BIGNUM *a = BN_CTX_get(ctx);
+  BIGNUM *b = BN_CTX_get(ctx);
+  BIGNUM *y = BN_CTX_get(ctx);
+  if (y == NULL ||
+      !EC_GROUP_get_curve_GFp(group, NULL, a, b, ctx)) {
+    goto err;
+  }
+
+  // Recover y.  We have a Weierstrass equation
+  //     y^2 = x^3 + a*x + b,
+  // so  y  is one of the square roots of  x^3 + a*x + b.
+
+  // tmp1 := x^3
+  if (!BN_mod_sqr(tmp2, x, &group->field, ctx) ||
+      !BN_mod_mul(tmp1, tmp2, x, &group->field, ctx)) {
+    goto err;
+  }
+
+  // tmp1 := tmp1 + a*x
+  if (group->a_is_minus3) {
+    if (!bn_mod_lshift1_consttime(tmp2, x, &group->field, ctx) ||
+        !bn_mod_add_consttime(tmp2, tmp2, x, &group->field, ctx) ||
+        !bn_mod_sub_consttime(tmp1, tmp1, tmp2, &group->field, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_mod_mul(tmp2, a, x, &group->field, ctx) ||
+        !bn_mod_add_consttime(tmp1, tmp1, tmp2, &group->field, ctx)) {
+      goto err;
+    }
+  }
+
+  // tmp1 := tmp1 + b
+  if (!bn_mod_add_consttime(tmp1, tmp1, b, &group->field, ctx)) {
+    goto err;
+  }
+
+  if (!BN_mod_sqrt(y, tmp1, &group->field, ctx)) {
+    unsigned long err = ERR_peek_last_error();
+
+    if (ERR_GET_LIB(err) == ERR_LIB_BN &&
+        ERR_GET_REASON(err) == BN_R_NOT_A_SQUARE) {
+      ERR_clear_error();
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSED_POINT);
+    } else {
+      OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    }
+    goto err;
+  }
+
+  if (y_bit != BN_is_odd(y)) {
+    if (BN_is_zero(y)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSION_BIT);
+      goto err;
+    }
+    if (!BN_usub(y, &group->field, y)) {
+      goto err;
+    }
+  }
+  if (y_bit != BN_is_odd(y)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  if (!EC_POINT_set_affine_coordinates_GFp(group, point, x, y, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c.grpc_back
new file mode 100644
index 0000000..04b1f2c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/oct.c.grpc_back	
@@ -0,0 +1,336 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+static size_t ec_GFp_simple_point2oct(const EC_GROUP *group,
+                                      const EC_RAW_POINT *point,
+                                      point_conversion_form_t form,
+                                      uint8_t *buf, size_t len) {
+  if (form != POINT_CONVERSION_COMPRESSED &&
+      form != POINT_CONVERSION_UNCOMPRESSED) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FORM);
+    return 0;
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  const size_t field_len = BN_num_bytes(&group->field);
+  size_t output_len = 1 /* type byte */ + field_len;
+  if (form == POINT_CONVERSION_UNCOMPRESSED) {
+    // Uncompressed points have a second coordinate.
+    output_len += field_len;
+  }
+
+  // if 'buf' is NULL, just return required length
+  if (buf != NULL) {
+    if (len < output_len) {
+      OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+      return 0;
+    }
+
+    uint8_t y_buf[EC_MAX_BYTES];
+    size_t field_len_out;
+    if (!ec_point_get_affine_coordinate_bytes(
+            group, buf + 1 /* x */,
+            form == POINT_CONVERSION_COMPRESSED ? y_buf : buf + 1 + field_len,
+            &field_len_out, field_len, point)) {
+      return 0;
+    }
+
+    if (field_len_out != field_len) {
+      OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+
+    if (form == POINT_CONVERSION_COMPRESSED) {
+      buf[0] = form + (y_buf[field_len - 1] & 1);
+    } else {
+      buf[0] = form;
+    }
+  }
+
+  return output_len;
+}
+
+static int ec_GFp_simple_oct2point(const EC_GROUP *group, EC_POINT *point,
+                                   const uint8_t *buf, size_t len,
+                                   BN_CTX *ctx) {
+  BN_CTX *new_ctx = NULL;
+  int ret = 0, used_ctx = 0;
+
+  if (len == 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_BUFFER_TOO_SMALL);
+    goto err;
+  }
+
+  point_conversion_form_t form = buf[0];
+  const int y_bit = form & 1;
+  form = form & ~1U;
+  if ((form != POINT_CONVERSION_COMPRESSED &&
+       form != POINT_CONVERSION_UNCOMPRESSED) ||
+      (form == POINT_CONVERSION_UNCOMPRESSED && y_bit)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  const size_t field_len = BN_num_bytes(&group->field);
+  size_t enc_len = 1 /* type byte */ + field_len;
+  if (form == POINT_CONVERSION_UNCOMPRESSED) {
+    // Uncompressed points have a second coordinate.
+    enc_len += field_len;
+  }
+
+  if (len != enc_len) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      goto err;
+    }
+  }
+
+  BN_CTX_start(ctx);
+  used_ctx = 1;
+  BIGNUM *x = BN_CTX_get(ctx);
+  BIGNUM *y = BN_CTX_get(ctx);
+  if (x == NULL || y == NULL) {
+    goto err;
+  }
+
+  if (!BN_bin2bn(buf + 1, field_len, x)) {
+    goto err;
+  }
+  if (BN_ucmp(x, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+    goto err;
+  }
+
+  if (form == POINT_CONVERSION_COMPRESSED) {
+    if (!EC_POINT_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_bin2bn(buf + 1 + field_len, field_len, y)) {
+      goto err;
+    }
+    if (BN_ucmp(y, &group->field) >= 0) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_ENCODING);
+      goto err;
+    }
+
+    if (!EC_POINT_set_affine_coordinates_GFp(group, point, x, y, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  if (used_ctx) {
+    BN_CTX_end(ctx);
+  }
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
+                       const uint8_t *buf, size_t len, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_oct2point(group, point, buf, len, ctx);
+}
+
+size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point,
+                          point_conversion_form_t form, uint8_t *buf,
+                          size_t len, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+  return ec_GFp_simple_point2oct(group, &point->raw, form, buf, len);
+}
+
+int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
+                                            EC_POINT *point, const BIGNUM *x,
+                                            int y_bit, BN_CTX *ctx) {
+  if (EC_GROUP_cmp(group, point->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  if (BN_is_negative(x) || BN_cmp(x, &group->field) >= 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSED_POINT);
+    return 0;
+  }
+
+  BN_CTX *new_ctx = NULL;
+  int ret = 0;
+
+  ERR_clear_error();
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  y_bit = (y_bit != 0);
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp1 = BN_CTX_get(ctx);
+  BIGNUM *tmp2 = BN_CTX_get(ctx);
+  BIGNUM *a = BN_CTX_get(ctx);
+  BIGNUM *b = BN_CTX_get(ctx);
+  BIGNUM *y = BN_CTX_get(ctx);
+  if (y == NULL ||
+      !EC_GROUP_get_curve_GFp(group, NULL, a, b, ctx)) {
+    goto err;
+  }
+
+  // Recover y.  We have a Weierstrass equation
+  //     y^2 = x^3 + a*x + b,
+  // so  y  is one of the square roots of  x^3 + a*x + b.
+
+  // tmp1 := x^3
+  if (!BN_mod_sqr(tmp2, x, &group->field, ctx) ||
+      !BN_mod_mul(tmp1, tmp2, x, &group->field, ctx)) {
+    goto err;
+  }
+
+  // tmp1 := tmp1 + a*x
+  if (group->a_is_minus3) {
+    if (!bn_mod_lshift1_consttime(tmp2, x, &group->field, ctx) ||
+        !bn_mod_add_consttime(tmp2, tmp2, x, &group->field, ctx) ||
+        !bn_mod_sub_consttime(tmp1, tmp1, tmp2, &group->field, ctx)) {
+      goto err;
+    }
+  } else {
+    if (!BN_mod_mul(tmp2, a, x, &group->field, ctx) ||
+        !bn_mod_add_consttime(tmp1, tmp1, tmp2, &group->field, ctx)) {
+      goto err;
+    }
+  }
+
+  // tmp1 := tmp1 + b
+  if (!bn_mod_add_consttime(tmp1, tmp1, b, &group->field, ctx)) {
+    goto err;
+  }
+
+  if (!BN_mod_sqrt(y, tmp1, &group->field, ctx)) {
+    unsigned long err = ERR_peek_last_error();
+
+    if (ERR_GET_LIB(err) == ERR_LIB_BN &&
+        ERR_GET_REASON(err) == BN_R_NOT_A_SQUARE) {
+      ERR_clear_error();
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSED_POINT);
+    } else {
+      OPENSSL_PUT_ERROR(EC, ERR_R_BN_LIB);
+    }
+    goto err;
+  }
+
+  if (y_bit != BN_is_odd(y)) {
+    if (BN_is_zero(y)) {
+      OPENSSL_PUT_ERROR(EC, EC_R_INVALID_COMPRESSION_BIT);
+      goto err;
+    }
+    if (!BN_usub(y, &group->field, y)) {
+      goto err;
+    }
+  }
+  if (y_bit != BN_is_odd(y)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  if (!EC_POINT_set_affine_coordinates_GFp(group, point, x, y, ctx)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c
new file mode 100644
index 0000000..4932289
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c	
@@ -0,0 +1,1187 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// A 64-bit implementation of the NIST P-224 elliptic curve point multiplication
+//
+// Inspired by Daniel J. Bernstein's public domain nistp224 implementation
+// and Adam Langley's public domain 64-bit C implementation of curve25519.
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include <string.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+#if defined(BORINGSSL_HAS_UINT128) && !defined(OPENSSL_SMALL)
+
+// Field elements are represented as a_0 + 2^56*a_1 + 2^112*a_2 + 2^168*a_3
+// using 64-bit coefficients called 'limbs', and sometimes (for multiplication
+// results) as b_0 + 2^56*b_1 + 2^112*b_2 + 2^168*b_3 + 2^224*b_4 + 2^280*b_5 +
+// 2^336*b_6 using 128-bit coefficients called 'widelimbs'. A 4-p224_limb
+// representation is an 'p224_felem'; a 7-p224_widelimb representation is a
+// 'p224_widefelem'. Even within felems, bits of adjacent limbs overlap, and we
+// don't always reduce the representations: we ensure that inputs to each
+// p224_felem multiplication satisfy a_i < 2^60, so outputs satisfy b_i <
+// 4*2^60*2^60, and fit into a 128-bit word without overflow. The coefficients
+// are then again partially reduced to obtain an p224_felem satisfying a_i <
+// 2^57. We only reduce to the unique minimal representation at the end of the
+// computation.
+
+typedef uint64_t p224_limb;
+typedef uint128_t p224_widelimb;
+
+typedef p224_limb p224_felem[4];
+typedef p224_widelimb p224_widefelem[7];
+
+// Field element represented as a byte arrary. 28*8 = 224 bits is also the
+// group order size for the elliptic curve, and we also use this type for
+// scalars for point multiplication.
+typedef uint8_t p224_felem_bytearray[28];
+
+// Precomputed multiples of the standard generator
+// Points are given in coordinates (X, Y, Z) where Z normally is 1
+// (0 for the point at infinity).
+// For each field element, slice a_0 is word 0, etc.
+//
+// The table has 2 * 16 elements, starting with the following:
+// index | bits    | point
+// ------+---------+------------------------------
+//     0 | 0 0 0 0 | 0G
+//     1 | 0 0 0 1 | 1G
+//     2 | 0 0 1 0 | 2^56G
+//     3 | 0 0 1 1 | (2^56 + 1)G
+//     4 | 0 1 0 0 | 2^112G
+//     5 | 0 1 0 1 | (2^112 + 1)G
+//     6 | 0 1 1 0 | (2^112 + 2^56)G
+//     7 | 0 1 1 1 | (2^112 + 2^56 + 1)G
+//     8 | 1 0 0 0 | 2^168G
+//     9 | 1 0 0 1 | (2^168 + 1)G
+//    10 | 1 0 1 0 | (2^168 + 2^56)G
+//    11 | 1 0 1 1 | (2^168 + 2^56 + 1)G
+//    12 | 1 1 0 0 | (2^168 + 2^112)G
+//    13 | 1 1 0 1 | (2^168 + 2^112 + 1)G
+//    14 | 1 1 1 0 | (2^168 + 2^112 + 2^56)G
+//    15 | 1 1 1 1 | (2^168 + 2^112 + 2^56 + 1)G
+// followed by a copy of this with each element multiplied by 2^28.
+//
+// The reason for this is so that we can clock bits into four different
+// locations when doing simple scalar multiplies against the base point,
+// and then another four locations using the second 16 elements.
+static const p224_felem g_p224_pre_comp[2][16][3] = {
+    {{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}},
+     {{0x3280d6115c1d21, 0xc1d356c2112234, 0x7f321390b94a03, 0xb70e0cbd6bb4bf},
+      {0xd5819985007e34, 0x75a05a07476444, 0xfb4c22dfe6cd43, 0xbd376388b5f723},
+      {1, 0, 0, 0}},
+     {{0xfd9675666ebbe9, 0xbca7664d40ce5e, 0x2242df8d8a2a43, 0x1f49bbb0f99bc5},
+      {0x29e0b892dc9c43, 0xece8608436e662, 0xdc858f185310d0, 0x9812dd4eb8d321},
+      {1, 0, 0, 0}},
+     {{0x6d3e678d5d8eb8, 0x559eed1cb362f1, 0x16e9a3bbce8a3f, 0xeedcccd8c2a748},
+      {0xf19f90ed50266d, 0xabf2b4bf65f9df, 0x313865468fafec, 0x5cb379ba910a17},
+      {1, 0, 0, 0}},
+     {{0x0641966cab26e3, 0x91fb2991fab0a0, 0xefec27a4e13a0b, 0x0499aa8a5f8ebe},
+      {0x7510407766af5d, 0x84d929610d5450, 0x81d77aae82f706, 0x6916f6d4338c5b},
+      {1, 0, 0, 0}},
+     {{0xea95ac3b1f15c6, 0x086000905e82d4, 0xdd323ae4d1c8b1, 0x932b56be7685a3},
+      {0x9ef93dea25dbbf, 0x41665960f390f0, 0xfdec76dbe2a8a7, 0x523e80f019062a},
+      {1, 0, 0, 0}},
+     {{0x822fdd26732c73, 0xa01c83531b5d0f, 0x363f37347c1ba4, 0xc391b45c84725c},
+      {0xbbd5e1b2d6ad24, 0xddfbcde19dfaec, 0xc393da7e222a7f, 0x1efb7890ede244},
+      {1, 0, 0, 0}},
+     {{0x4c9e90ca217da1, 0xd11beca79159bb, 0xff8d33c2c98b7c, 0x2610b39409f849},
+      {0x44d1352ac64da0, 0xcdbb7b2c46b4fb, 0x966c079b753c89, 0xfe67e4e820b112},
+      {1, 0, 0, 0}},
+     {{0xe28cae2df5312d, 0xc71b61d16f5c6e, 0x79b7619a3e7c4c, 0x05c73240899b47},
+      {0x9f7f6382c73e3a, 0x18615165c56bda, 0x641fab2116fd56, 0x72855882b08394},
+      {1, 0, 0, 0}},
+     {{0x0469182f161c09, 0x74a98ca8d00fb5, 0xb89da93489a3e0, 0x41c98768fb0c1d},
+      {0xe5ea05fb32da81, 0x3dce9ffbca6855, 0x1cfe2d3fbf59e6, 0x0e5e03408738a7},
+      {1, 0, 0, 0}},
+     {{0xdab22b2333e87f, 0x4430137a5dd2f6, 0xe03ab9f738beb8, 0xcb0c5d0dc34f24},
+      {0x764a7df0c8fda5, 0x185ba5c3fa2044, 0x9281d688bcbe50, 0xc40331df893881},
+      {1, 0, 0, 0}},
+     {{0xb89530796f0f60, 0xade92bd26909a3, 0x1a0c83fb4884da, 0x1765bf22a5a984},
+      {0x772a9ee75db09e, 0x23bc6c67cec16f, 0x4c1edba8b14e2f, 0xe2a215d9611369},
+      {1, 0, 0, 0}},
+     {{0x571e509fb5efb3, 0xade88696410552, 0xc8ae85fada74fe, 0x6c7e4be83bbde3},
+      {0xff9f51160f4652, 0xb47ce2495a6539, 0xa2946c53b582f4, 0x286d2db3ee9a60},
+      {1, 0, 0, 0}},
+     {{0x40bbd5081a44af, 0x0995183b13926c, 0xbcefba6f47f6d0, 0x215619e9cc0057},
+      {0x8bc94d3b0df45e, 0xf11c54a3694f6f, 0x8631b93cdfe8b5, 0xe7e3f4b0982db9},
+      {1, 0, 0, 0}},
+     {{0xb17048ab3e1c7b, 0xac38f36ff8a1d8, 0x1c29819435d2c6, 0xc813132f4c07e9},
+      {0x2891425503b11f, 0x08781030579fea, 0xf5426ba5cc9674, 0x1e28ebf18562bc},
+      {1, 0, 0, 0}},
+     {{0x9f31997cc864eb, 0x06cd91d28b5e4c, 0xff17036691a973, 0xf1aef351497c58},
+      {0xdd1f2d600564ff, 0xdead073b1402db, 0x74a684435bd693, 0xeea7471f962558},
+      {1, 0, 0, 0}}},
+    {{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}},
+     {{0x9665266dddf554, 0x9613d78b60ef2d, 0xce27a34cdba417, 0xd35ab74d6afc31},
+      {0x85ccdd22deb15e, 0x2137e5783a6aab, 0xa141cffd8c93c6, 0x355a1830e90f2d},
+      {1, 0, 0, 0}},
+     {{0x1a494eadaade65, 0xd6da4da77fe53c, 0xe7992996abec86, 0x65c3553c6090e3},
+      {0xfa610b1fb09346, 0xf1c6540b8a4aaf, 0xc51a13ccd3cbab, 0x02995b1b18c28a},
+      {1, 0, 0, 0}},
+     {{0x7874568e7295ef, 0x86b419fbe38d04, 0xdc0690a7550d9a, 0xd3966a44beac33},
+      {0x2b7280ec29132f, 0xbeaa3b6a032df3, 0xdc7dd88ae41200, 0xd25e2513e3a100},
+      {1, 0, 0, 0}},
+     {{0x924857eb2efafd, 0xac2bce41223190, 0x8edaa1445553fc, 0x825800fd3562d5},
+      {0x8d79148ea96621, 0x23a01c3dd9ed8d, 0xaf8b219f9416b5, 0xd8db0cc277daea},
+      {1, 0, 0, 0}},
+     {{0x76a9c3b1a700f0, 0xe9acd29bc7e691, 0x69212d1a6b0327, 0x6322e97fe154be},
+      {0x469fc5465d62aa, 0x8d41ed18883b05, 0x1f8eae66c52b88, 0xe4fcbe9325be51},
+      {1, 0, 0, 0}},
+     {{0x825fdf583cac16, 0x020b857c7b023a, 0x683c17744b0165, 0x14ffd0a2daf2f1},
+      {0x323b36184218f9, 0x4944ec4e3b47d4, 0xc15b3080841acf, 0x0bced4b01a28bb},
+      {1, 0, 0, 0}},
+     {{0x92ac22230df5c4, 0x52f33b4063eda8, 0xcb3f19870c0c93, 0x40064f2ba65233},
+      {0xfe16f0924f8992, 0x012da25af5b517, 0x1a57bb24f723a6, 0x06f8bc76760def},
+      {1, 0, 0, 0}},
+     {{0x4a7084f7817cb9, 0xbcab0738ee9a78, 0x3ec11e11d9c326, 0xdc0fe90e0f1aae},
+      {0xcf639ea5f98390, 0x5c350aa22ffb74, 0x9afae98a4047b7, 0x956ec2d617fc45},
+      {1, 0, 0, 0}},
+     {{0x4306d648c1be6a, 0x9247cd8bc9a462, 0xf5595e377d2f2e, 0xbd1c3caff1a52e},
+      {0x045e14472409d0, 0x29f3e17078f773, 0x745a602b2d4f7d, 0x191837685cdfbb},
+      {1, 0, 0, 0}},
+     {{0x5b6ee254a8cb79, 0x4953433f5e7026, 0xe21faeb1d1def4, 0xc4c225785c09de},
+      {0x307ce7bba1e518, 0x31b125b1036db8, 0x47e91868839e8f, 0xc765866e33b9f3},
+      {1, 0, 0, 0}},
+     {{0x3bfece24f96906, 0x4794da641e5093, 0xde5df64f95db26, 0x297ecd89714b05},
+      {0x701bd3ebb2c3aa, 0x7073b4f53cb1d5, 0x13c5665658af16, 0x9895089d66fe58},
+      {1, 0, 0, 0}},
+     {{0x0fef05f78c4790, 0x2d773633b05d2e, 0x94229c3a951c94, 0xbbbd70df4911bb},
+      {0xb2c6963d2c1168, 0x105f47a72b0d73, 0x9fdf6111614080, 0x7b7e94b39e67b0},
+      {1, 0, 0, 0}},
+     {{0xad1a7d6efbe2b3, 0xf012482c0da69d, 0x6b3bdf12438345, 0x40d7558d7aa4d9},
+      {0x8a09fffb5c6d3d, 0x9a356e5d9ffd38, 0x5973f15f4f9b1c, 0xdcd5f59f63c3ea},
+      {1, 0, 0, 0}},
+     {{0xacf39f4c5ca7ab, 0x4c8071cc5fd737, 0xc64e3602cd1184, 0x0acd4644c9abba},
+      {0x6c011a36d8bf6e, 0xfecd87ba24e32a, 0x19f6f56574fad8, 0x050b204ced9405},
+      {1, 0, 0, 0}},
+     {{0xed4f1cae7d9a96, 0x5ceef7ad94c40a, 0x778e4a3bf3ef9b, 0x7405783dc3b55e},
+      {0x32477c61b6e8c6, 0xb46a97570f018b, 0x91176d0a7e95d1, 0x3df90fbc4c7d0e},
+      {1, 0, 0, 0}}}};
+
+static uint64_t p224_load_u64(const uint8_t in[8]) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, in, sizeof(ret));
+  return ret;
+}
+
+// Helper functions to convert field elements to/from internal representation
+static void p224_bin28_to_felem(p224_felem out, const uint8_t in[28]) {
+  out[0] = p224_load_u64(in) & 0x00ffffffffffffff;
+  out[1] = p224_load_u64(in + 7) & 0x00ffffffffffffff;
+  out[2] = p224_load_u64(in + 14) & 0x00ffffffffffffff;
+  out[3] = p224_load_u64(in + 20) >> 8;
+}
+
+static void p224_felem_to_bin28(uint8_t out[28], const p224_felem in) {
+  for (size_t i = 0; i < 7; ++i) {
+    out[i] = in[0] >> (8 * i);
+    out[i + 7] = in[1] >> (8 * i);
+    out[i + 14] = in[2] >> (8 * i);
+    out[i + 21] = in[3] >> (8 * i);
+  }
+}
+
+static void p224_generic_to_felem(p224_felem out, const EC_FELEM *in) {
+  p224_bin28_to_felem(out, in->bytes);
+}
+
+// Requires 0 <= in < 2*p (always call p224_felem_reduce first)
+static void p224_felem_to_generic(EC_FELEM *out, const p224_felem in) {
+  // Reduce to unique minimal representation.
+  static const int64_t two56 = ((p224_limb)1) << 56;
+  // 0 <= in < 2*p, p = 2^224 - 2^96 + 1
+  // if in > p , reduce in = in - 2^224 + 2^96 - 1
+  int64_t tmp[4], a;
+  tmp[0] = in[0];
+  tmp[1] = in[1];
+  tmp[2] = in[2];
+  tmp[3] = in[3];
+  // Case 1: a = 1 iff in >= 2^224
+  a = (in[3] >> 56);
+  tmp[0] -= a;
+  tmp[1] += a << 40;
+  tmp[3] &= 0x00ffffffffffffff;
+  // Case 2: a = 0 iff p <= in < 2^224, i.e., the high 128 bits are all 1 and
+  // the lower part is non-zero
+  a = ((in[3] & in[2] & (in[1] | 0x000000ffffffffff)) + 1) |
+      (((int64_t)(in[0] + (in[1] & 0x000000ffffffffff)) - 1) >> 63);
+  a &= 0x00ffffffffffffff;
+  // turn a into an all-one mask (if a = 0) or an all-zero mask
+  a = (a - 1) >> 63;
+  // subtract 2^224 - 2^96 + 1 if a is all-one
+  tmp[3] &= a ^ 0xffffffffffffffff;
+  tmp[2] &= a ^ 0xffffffffffffffff;
+  tmp[1] &= (a ^ 0xffffffffffffffff) | 0x000000ffffffffff;
+  tmp[0] -= 1 & a;
+
+  // eliminate negative coefficients: if tmp[0] is negative, tmp[1] must
+  // be non-zero, so we only need one step
+  a = tmp[0] >> 63;
+  tmp[0] += two56 & a;
+  tmp[1] -= 1 & a;
+
+  // carry 1 -> 2 -> 3
+  tmp[2] += tmp[1] >> 56;
+  tmp[1] &= 0x00ffffffffffffff;
+
+  tmp[3] += tmp[2] >> 56;
+  tmp[2] &= 0x00ffffffffffffff;
+
+  // Now 0 <= tmp < p
+  p224_felem tmp2;
+  tmp2[0] = tmp[0];
+  tmp2[1] = tmp[1];
+  tmp2[2] = tmp[2];
+  tmp2[3] = tmp[3];
+
+  p224_felem_to_bin28(out->bytes, tmp2);
+  // 224 is not a multiple of 64, so zero the remaining bytes.
+  OPENSSL_memset(out->bytes + 28, 0, 32 - 28);
+}
+
+
+// Field operations, using the internal representation of field elements.
+// NB! These operations are specific to our point multiplication and cannot be
+// expected to be correct in general - e.g., multiplication with a large scalar
+// will cause an overflow.
+
+static void p224_felem_assign(p224_felem out, const p224_felem in) {
+  out[0] = in[0];
+  out[1] = in[1];
+  out[2] = in[2];
+  out[3] = in[3];
+}
+
+// Sum two field elements: out += in
+static void p224_felem_sum(p224_felem out, const p224_felem in) {
+  out[0] += in[0];
+  out[1] += in[1];
+  out[2] += in[2];
+  out[3] += in[3];
+}
+
+// Subtract field elements: out -= in
+// Assumes in[i] < 2^57
+static void p224_felem_diff(p224_felem out, const p224_felem in) {
+  static const p224_limb two58p2 =
+      (((p224_limb)1) << 58) + (((p224_limb)1) << 2);
+  static const p224_limb two58m2 =
+      (((p224_limb)1) << 58) - (((p224_limb)1) << 2);
+  static const p224_limb two58m42m2 =
+      (((p224_limb)1) << 58) - (((p224_limb)1) << 42) - (((p224_limb)1) << 2);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two58p2;
+  out[1] += two58m42m2;
+  out[2] += two58m2;
+  out[3] += two58m2;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+}
+
+// Subtract in unreduced 128-bit mode: out -= in
+// Assumes in[i] < 2^119
+static void p224_widefelem_diff(p224_widefelem out, const p224_widefelem in) {
+  static const p224_widelimb two120 = ((p224_widelimb)1) << 120;
+  static const p224_widelimb two120m64 =
+      (((p224_widelimb)1) << 120) - (((p224_widelimb)1) << 64);
+  static const p224_widelimb two120m104m64 = (((p224_widelimb)1) << 120) -
+                                             (((p224_widelimb)1) << 104) -
+                                             (((p224_widelimb)1) << 64);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two120;
+  out[1] += two120m64;
+  out[2] += two120m64;
+  out[3] += two120;
+  out[4] += two120m104m64;
+  out[5] += two120m64;
+  out[6] += two120m64;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+  out[4] -= in[4];
+  out[5] -= in[5];
+  out[6] -= in[6];
+}
+
+// Subtract in mixed mode: out128 -= in64
+// in[i] < 2^63
+static void p224_felem_diff_128_64(p224_widefelem out, const p224_felem in) {
+  static const p224_widelimb two64p8 =
+      (((p224_widelimb)1) << 64) + (((p224_widelimb)1) << 8);
+  static const p224_widelimb two64m8 =
+      (((p224_widelimb)1) << 64) - (((p224_widelimb)1) << 8);
+  static const p224_widelimb two64m48m8 = (((p224_widelimb)1) << 64) -
+                                          (((p224_widelimb)1) << 48) -
+                                          (((p224_widelimb)1) << 8);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two64p8;
+  out[1] += two64m48m8;
+  out[2] += two64m8;
+  out[3] += two64m8;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+}
+
+// Multiply a field element by a scalar: out = out * scalar
+// The scalars we actually use are small, so results fit without overflow
+static void p224_felem_scalar(p224_felem out, const p224_limb scalar) {
+  out[0] *= scalar;
+  out[1] *= scalar;
+  out[2] *= scalar;
+  out[3] *= scalar;
+}
+
+// Multiply an unreduced field element by a scalar: out = out * scalar
+// The scalars we actually use are small, so results fit without overflow
+static void p224_widefelem_scalar(p224_widefelem out,
+                                  const p224_widelimb scalar) {
+  out[0] *= scalar;
+  out[1] *= scalar;
+  out[2] *= scalar;
+  out[3] *= scalar;
+  out[4] *= scalar;
+  out[5] *= scalar;
+  out[6] *= scalar;
+}
+
+// Square a field element: out = in^2
+static void p224_felem_square(p224_widefelem out, const p224_felem in) {
+  p224_limb tmp0, tmp1, tmp2;
+  tmp0 = 2 * in[0];
+  tmp1 = 2 * in[1];
+  tmp2 = 2 * in[2];
+  out[0] = ((p224_widelimb)in[0]) * in[0];
+  out[1] = ((p224_widelimb)in[0]) * tmp1;
+  out[2] = ((p224_widelimb)in[0]) * tmp2 + ((p224_widelimb)in[1]) * in[1];
+  out[3] = ((p224_widelimb)in[3]) * tmp0 + ((p224_widelimb)in[1]) * tmp2;
+  out[4] = ((p224_widelimb)in[3]) * tmp1 + ((p224_widelimb)in[2]) * in[2];
+  out[5] = ((p224_widelimb)in[3]) * tmp2;
+  out[6] = ((p224_widelimb)in[3]) * in[3];
+}
+
+// Multiply two field elements: out = in1 * in2
+static void p224_felem_mul(p224_widefelem out, const p224_felem in1,
+                           const p224_felem in2) {
+  out[0] = ((p224_widelimb)in1[0]) * in2[0];
+  out[1] = ((p224_widelimb)in1[0]) * in2[1] + ((p224_widelimb)in1[1]) * in2[0];
+  out[2] = ((p224_widelimb)in1[0]) * in2[2] + ((p224_widelimb)in1[1]) * in2[1] +
+           ((p224_widelimb)in1[2]) * in2[0];
+  out[3] = ((p224_widelimb)in1[0]) * in2[3] + ((p224_widelimb)in1[1]) * in2[2] +
+           ((p224_widelimb)in1[2]) * in2[1] + ((p224_widelimb)in1[3]) * in2[0];
+  out[4] = ((p224_widelimb)in1[1]) * in2[3] + ((p224_widelimb)in1[2]) * in2[2] +
+           ((p224_widelimb)in1[3]) * in2[1];
+  out[5] = ((p224_widelimb)in1[2]) * in2[3] + ((p224_widelimb)in1[3]) * in2[2];
+  out[6] = ((p224_widelimb)in1[3]) * in2[3];
+}
+
+// Reduce seven 128-bit coefficients to four 64-bit coefficients.
+// Requires in[i] < 2^126,
+// ensures out[0] < 2^56, out[1] < 2^56, out[2] < 2^56, out[3] <= 2^56 + 2^16
+static void p224_felem_reduce(p224_felem out, const p224_widefelem in) {
+  static const p224_widelimb two127p15 =
+      (((p224_widelimb)1) << 127) + (((p224_widelimb)1) << 15);
+  static const p224_widelimb two127m71 =
+      (((p224_widelimb)1) << 127) - (((p224_widelimb)1) << 71);
+  static const p224_widelimb two127m71m55 = (((p224_widelimb)1) << 127) -
+                                            (((p224_widelimb)1) << 71) -
+                                            (((p224_widelimb)1) << 55);
+  p224_widelimb output[5];
+
+  // Add 0 mod 2^224-2^96+1 to ensure all differences are positive
+  output[0] = in[0] + two127p15;
+  output[1] = in[1] + two127m71m55;
+  output[2] = in[2] + two127m71;
+  output[3] = in[3];
+  output[4] = in[4];
+
+  // Eliminate in[4], in[5], in[6]
+  output[4] += in[6] >> 16;
+  output[3] += (in[6] & 0xffff) << 40;
+  output[2] -= in[6];
+
+  output[3] += in[5] >> 16;
+  output[2] += (in[5] & 0xffff) << 40;
+  output[1] -= in[5];
+
+  output[2] += output[4] >> 16;
+  output[1] += (output[4] & 0xffff) << 40;
+  output[0] -= output[4];
+
+  // Carry 2 -> 3 -> 4
+  output[3] += output[2] >> 56;
+  output[2] &= 0x00ffffffffffffff;
+
+  output[4] = output[3] >> 56;
+  output[3] &= 0x00ffffffffffffff;
+
+  // Now output[2] < 2^56, output[3] < 2^56, output[4] < 2^72
+
+  // Eliminate output[4]
+  output[2] += output[4] >> 16;
+  // output[2] < 2^56 + 2^56 = 2^57
+  output[1] += (output[4] & 0xffff) << 40;
+  output[0] -= output[4];
+
+  // Carry 0 -> 1 -> 2 -> 3
+  output[1] += output[0] >> 56;
+  out[0] = output[0] & 0x00ffffffffffffff;
+
+  output[2] += output[1] >> 56;
+  // output[2] < 2^57 + 2^72
+  out[1] = output[1] & 0x00ffffffffffffff;
+  output[3] += output[2] >> 56;
+  // output[3] <= 2^56 + 2^16
+  out[2] = output[2] & 0x00ffffffffffffff;
+
+  // out[0] < 2^56, out[1] < 2^56, out[2] < 2^56,
+  // out[3] <= 2^56 + 2^16 (due to final carry),
+  // so out < 2*p
+  out[3] = output[3];
+}
+
+// Get negative value: out = -in
+// Requires in[i] < 2^63,
+// ensures out[0] < 2^56, out[1] < 2^56, out[2] < 2^56, out[3] <= 2^56 + 2^16
+static void p224_felem_neg(p224_felem out, const p224_felem in) {
+  p224_widefelem tmp = {0};
+  p224_felem_diff_128_64(tmp, in);
+  p224_felem_reduce(out, tmp);
+}
+
+// Zero-check: returns 1 if input is 0, and 0 otherwise. We know that field
+// elements are reduced to in < 2^225, so we only need to check three cases: 0,
+// 2^224 - 2^96 + 1, and 2^225 - 2^97 + 2
+static p224_limb p224_felem_is_zero(const p224_felem in) {
+  p224_limb zero = in[0] | in[1] | in[2] | in[3];
+  zero = (((int64_t)(zero)-1) >> 63) & 1;
+
+  p224_limb two224m96p1 = (in[0] ^ 1) | (in[1] ^ 0x00ffff0000000000) |
+                     (in[2] ^ 0x00ffffffffffffff) |
+                     (in[3] ^ 0x00ffffffffffffff);
+  two224m96p1 = (((int64_t)(two224m96p1)-1) >> 63) & 1;
+  p224_limb two225m97p2 = (in[0] ^ 2) | (in[1] ^ 0x00fffe0000000000) |
+                     (in[2] ^ 0x00ffffffffffffff) |
+                     (in[3] ^ 0x01ffffffffffffff);
+  two225m97p2 = (((int64_t)(two225m97p2)-1) >> 63) & 1;
+  return (zero | two224m96p1 | two225m97p2);
+}
+
+// Invert a field element
+// Computation chain copied from djb's code
+static void p224_felem_inv(p224_felem out, const p224_felem in) {
+  p224_felem ftmp, ftmp2, ftmp3, ftmp4;
+  p224_widefelem tmp;
+
+  p224_felem_square(tmp, in);
+  p224_felem_reduce(ftmp, tmp);  // 2
+  p224_felem_mul(tmp, in, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^2 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^3 - 2
+  p224_felem_mul(tmp, in, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^3 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^4 - 2
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^5 - 4
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^6 - 8
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^6 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^7 - 2
+  for (size_t i = 0; i < 5; ++i) {  // 2^12 - 2^6
+    p224_felem_square(tmp, ftmp2);
+    p224_felem_reduce(ftmp2, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^12 - 1
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^13 - 2
+  for (size_t i = 0; i < 11; ++i) {  // 2^24 - 2^12
+    p224_felem_square(tmp, ftmp3);
+    p224_felem_reduce(ftmp3, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^24 - 1
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^25 - 2
+  for (size_t i = 0; i < 23; ++i) {  // 2^48 - 2^24
+    p224_felem_square(tmp, ftmp3);
+    p224_felem_reduce(ftmp3, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^48 - 1
+  p224_felem_square(tmp, ftmp3);
+  p224_felem_reduce(ftmp4, tmp);  // 2^49 - 2
+  for (size_t i = 0; i < 47; ++i) {  // 2^96 - 2^48
+    p224_felem_square(tmp, ftmp4);
+    p224_felem_reduce(ftmp4, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp4);
+  p224_felem_reduce(ftmp3, tmp);  // 2^96 - 1
+  p224_felem_square(tmp, ftmp3);
+  p224_felem_reduce(ftmp4, tmp);  // 2^97 - 2
+  for (size_t i = 0; i < 23; ++i) {  // 2^120 - 2^24
+    p224_felem_square(tmp, ftmp4);
+    p224_felem_reduce(ftmp4, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp4);
+  p224_felem_reduce(ftmp2, tmp);  // 2^120 - 1
+  for (size_t i = 0; i < 6; ++i) {  // 2^126 - 2^6
+    p224_felem_square(tmp, ftmp2);
+    p224_felem_reduce(ftmp2, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^126 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^127 - 2
+  p224_felem_mul(tmp, ftmp, in);
+  p224_felem_reduce(ftmp, tmp);  // 2^127 - 1
+  for (size_t i = 0; i < 97; ++i) {  // 2^224 - 2^97
+    p224_felem_square(tmp, ftmp);
+    p224_felem_reduce(ftmp, tmp);
+  }
+  p224_felem_mul(tmp, ftmp, ftmp3);
+  p224_felem_reduce(out, tmp);  // 2^224 - 2^96 - 1
+}
+
+// Copy in constant time:
+// if icopy == 1, copy in to out,
+// if icopy == 0, copy out to itself.
+static void p224_copy_conditional(p224_felem out, const p224_felem in,
+                                  p224_limb icopy) {
+  // icopy is a (64-bit) 0 or 1, so copy is either all-zero or all-one
+  const p224_limb copy = -icopy;
+  for (size_t i = 0; i < 4; ++i) {
+    const p224_limb tmp = copy & (in[i] ^ out[i]);
+    out[i] ^= tmp;
+  }
+}
+
+// ELLIPTIC CURVE POINT OPERATIONS
+//
+// Points are represented in Jacobian projective coordinates:
+// (X, Y, Z) corresponds to the affine point (X/Z^2, Y/Z^3),
+// or to the point at infinity if Z == 0.
+
+// Double an elliptic curve point:
+// (X', Y', Z') = 2 * (X, Y, Z), where
+// X' = (3 * (X - Z^2) * (X + Z^2))^2 - 8 * X * Y^2
+// Y' = 3 * (X - Z^2) * (X + Z^2) * (4 * X * Y^2 - X') - 8 * Y^2
+// Z' = (Y + Z)^2 - Y^2 - Z^2 = 2 * Y * Z
+// Outputs can equal corresponding inputs, i.e., x_out == x_in is allowed,
+// while x_out == y_in is not (maybe this works, but it's not tested).
+static void p224_point_double(p224_felem x_out, p224_felem y_out,
+                              p224_felem z_out, const p224_felem x_in,
+                              const p224_felem y_in, const p224_felem z_in) {
+  p224_widefelem tmp, tmp2;
+  p224_felem delta, gamma, beta, alpha, ftmp, ftmp2;
+
+  p224_felem_assign(ftmp, x_in);
+  p224_felem_assign(ftmp2, x_in);
+
+  // delta = z^2
+  p224_felem_square(tmp, z_in);
+  p224_felem_reduce(delta, tmp);
+
+  // gamma = y^2
+  p224_felem_square(tmp, y_in);
+  p224_felem_reduce(gamma, tmp);
+
+  // beta = x*gamma
+  p224_felem_mul(tmp, x_in, gamma);
+  p224_felem_reduce(beta, tmp);
+
+  // alpha = 3*(x-delta)*(x+delta)
+  p224_felem_diff(ftmp, delta);
+  // ftmp[i] < 2^57 + 2^58 + 2 < 2^59
+  p224_felem_sum(ftmp2, delta);
+  // ftmp2[i] < 2^57 + 2^57 = 2^58
+  p224_felem_scalar(ftmp2, 3);
+  // ftmp2[i] < 3 * 2^58 < 2^60
+  p224_felem_mul(tmp, ftmp, ftmp2);
+  // tmp[i] < 2^60 * 2^59 * 4 = 2^121
+  p224_felem_reduce(alpha, tmp);
+
+  // x' = alpha^2 - 8*beta
+  p224_felem_square(tmp, alpha);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+  p224_felem_assign(ftmp, beta);
+  p224_felem_scalar(ftmp, 8);
+  // ftmp[i] < 8 * 2^57 = 2^60
+  p224_felem_diff_128_64(tmp, ftmp);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(x_out, tmp);
+
+  // z' = (y + z)^2 - gamma - delta
+  p224_felem_sum(delta, gamma);
+  // delta[i] < 2^57 + 2^57 = 2^58
+  p224_felem_assign(ftmp, y_in);
+  p224_felem_sum(ftmp, z_in);
+  // ftmp[i] < 2^57 + 2^57 = 2^58
+  p224_felem_square(tmp, ftmp);
+  // tmp[i] < 4 * 2^58 * 2^58 = 2^118
+  p224_felem_diff_128_64(tmp, delta);
+  // tmp[i] < 2^118 + 2^64 + 8 < 2^119
+  p224_felem_reduce(z_out, tmp);
+
+  // y' = alpha*(4*beta - x') - 8*gamma^2
+  p224_felem_scalar(beta, 4);
+  // beta[i] < 4 * 2^57 = 2^59
+  p224_felem_diff(beta, x_out);
+  // beta[i] < 2^59 + 2^58 + 2 < 2^60
+  p224_felem_mul(tmp, alpha, beta);
+  // tmp[i] < 4 * 2^57 * 2^60 = 2^119
+  p224_felem_square(tmp2, gamma);
+  // tmp2[i] < 4 * 2^57 * 2^57 = 2^116
+  p224_widefelem_scalar(tmp2, 8);
+  // tmp2[i] < 8 * 2^116 = 2^119
+  p224_widefelem_diff(tmp, tmp2);
+  // tmp[i] < 2^119 + 2^120 < 2^121
+  p224_felem_reduce(y_out, tmp);
+}
+
+// Add two elliptic curve points:
+// (X_1, Y_1, Z_1) + (X_2, Y_2, Z_2) = (X_3, Y_3, Z_3), where
+// X_3 = (Z_1^3 * Y_2 - Z_2^3 * Y_1)^2 - (Z_1^2 * X_2 - Z_2^2 * X_1)^3 -
+// 2 * Z_2^2 * X_1 * (Z_1^2 * X_2 - Z_2^2 * X_1)^2
+// Y_3 = (Z_1^3 * Y_2 - Z_2^3 * Y_1) * (Z_2^2 * X_1 * (Z_1^2 * X_2 - Z_2^2 *
+// X_1)^2 - X_3) -
+//        Z_2^3 * Y_1 * (Z_1^2 * X_2 - Z_2^2 * X_1)^3
+// Z_3 = (Z_1^2 * X_2 - Z_2^2 * X_1) * (Z_1 * Z_2)
+//
+// This runs faster if 'mixed' is set, which requires Z_2 = 1 or Z_2 = 0.
+
+// This function is not entirely constant-time: it includes a branch for
+// checking whether the two input points are equal, (while not equal to the
+// point at infinity). This case never happens during single point
+// multiplication, so there is no timing leak for ECDH or ECDSA signing.
+static void p224_point_add(p224_felem x3, p224_felem y3, p224_felem z3,
+                           const p224_felem x1, const p224_felem y1,
+                           const p224_felem z1, const int mixed,
+                           const p224_felem x2, const p224_felem y2,
+                           const p224_felem z2) {
+  p224_felem ftmp, ftmp2, ftmp3, ftmp4, ftmp5, x_out, y_out, z_out;
+  p224_widefelem tmp, tmp2;
+  p224_limb z1_is_zero, z2_is_zero, x_equal, y_equal;
+
+  if (!mixed) {
+    // ftmp2 = z2^2
+    p224_felem_square(tmp, z2);
+    p224_felem_reduce(ftmp2, tmp);
+
+    // ftmp4 = z2^3
+    p224_felem_mul(tmp, ftmp2, z2);
+    p224_felem_reduce(ftmp4, tmp);
+
+    // ftmp4 = z2^3*y1
+    p224_felem_mul(tmp2, ftmp4, y1);
+    p224_felem_reduce(ftmp4, tmp2);
+
+    // ftmp2 = z2^2*x1
+    p224_felem_mul(tmp2, ftmp2, x1);
+    p224_felem_reduce(ftmp2, tmp2);
+  } else {
+    // We'll assume z2 = 1 (special case z2 = 0 is handled later)
+
+    // ftmp4 = z2^3*y1
+    p224_felem_assign(ftmp4, y1);
+
+    // ftmp2 = z2^2*x1
+    p224_felem_assign(ftmp2, x1);
+  }
+
+  // ftmp = z1^2
+  p224_felem_square(tmp, z1);
+  p224_felem_reduce(ftmp, tmp);
+
+  // ftmp3 = z1^3
+  p224_felem_mul(tmp, ftmp, z1);
+  p224_felem_reduce(ftmp3, tmp);
+
+  // tmp = z1^3*y2
+  p224_felem_mul(tmp, ftmp3, y2);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // ftmp3 = z1^3*y2 - z2^3*y1
+  p224_felem_diff_128_64(tmp, ftmp4);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(ftmp3, tmp);
+
+  // tmp = z1^2*x2
+  p224_felem_mul(tmp, ftmp, x2);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // ftmp = z1^2*x2 - z2^2*x1
+  p224_felem_diff_128_64(tmp, ftmp2);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(ftmp, tmp);
+
+  // the formulae are incorrect if the points are equal
+  // so we check for this and do doubling if this happens
+  x_equal = p224_felem_is_zero(ftmp);
+  y_equal = p224_felem_is_zero(ftmp3);
+  z1_is_zero = p224_felem_is_zero(z1);
+  z2_is_zero = p224_felem_is_zero(z2);
+  // In affine coordinates, (X_1, Y_1) == (X_2, Y_2)
+  p224_limb is_nontrivial_double =
+      x_equal & y_equal & (1 - z1_is_zero) & (1 - z2_is_zero);
+  if (is_nontrivial_double) {
+    p224_point_double(x3, y3, z3, x1, y1, z1);
+    return;
+  }
+
+  // ftmp5 = z1*z2
+  if (!mixed) {
+    p224_felem_mul(tmp, z1, z2);
+    p224_felem_reduce(ftmp5, tmp);
+  } else {
+    // special case z2 = 0 is handled later
+    p224_felem_assign(ftmp5, z1);
+  }
+
+  // z_out = (z1^2*x2 - z2^2*x1)*(z1*z2)
+  p224_felem_mul(tmp, ftmp, ftmp5);
+  p224_felem_reduce(z_out, tmp);
+
+  // ftmp = (z1^2*x2 - z2^2*x1)^2
+  p224_felem_assign(ftmp5, ftmp);
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);
+
+  // ftmp5 = (z1^2*x2 - z2^2*x1)^3
+  p224_felem_mul(tmp, ftmp, ftmp5);
+  p224_felem_reduce(ftmp5, tmp);
+
+  // ftmp2 = z2^2*x1*(z1^2*x2 - z2^2*x1)^2
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp2, tmp);
+
+  // tmp = z2^3*y1*(z1^2*x2 - z2^2*x1)^3
+  p224_felem_mul(tmp, ftmp4, ftmp5);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)^2
+  p224_felem_square(tmp2, ftmp3);
+  // tmp2[i] < 4 * 2^57 * 2^57 < 2^116
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)^2 - (z1^2*x2 - z2^2*x1)^3
+  p224_felem_diff_128_64(tmp2, ftmp5);
+  // tmp2[i] < 2^116 + 2^64 + 8 < 2^117
+
+  // ftmp5 = 2*z2^2*x1*(z1^2*x2 - z2^2*x1)^2
+  p224_felem_assign(ftmp5, ftmp2);
+  p224_felem_scalar(ftmp5, 2);
+  // ftmp5[i] < 2 * 2^57 = 2^58
+
+  /* x_out = (z1^3*y2 - z2^3*y1)^2 - (z1^2*x2 - z2^2*x1)^3 -
+     2*z2^2*x1*(z1^2*x2 - z2^2*x1)^2 */
+  p224_felem_diff_128_64(tmp2, ftmp5);
+  // tmp2[i] < 2^117 + 2^64 + 8 < 2^118
+  p224_felem_reduce(x_out, tmp2);
+
+  // ftmp2 = z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out
+  p224_felem_diff(ftmp2, x_out);
+  // ftmp2[i] < 2^57 + 2^58 + 2 < 2^59
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)*(z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out)
+  p224_felem_mul(tmp2, ftmp3, ftmp2);
+  // tmp2[i] < 4 * 2^57 * 2^59 = 2^118
+
+  /* y_out = (z1^3*y2 - z2^3*y1)*(z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out) -
+     z2^3*y1*(z1^2*x2 - z2^2*x1)^3 */
+  p224_widefelem_diff(tmp2, tmp);
+  // tmp2[i] < 2^118 + 2^120 < 2^121
+  p224_felem_reduce(y_out, tmp2);
+
+  // the result (x_out, y_out, z_out) is incorrect if one of the inputs is
+  // the point at infinity, so we need to check for this separately
+
+  // if point 1 is at infinity, copy point 2 to output, and vice versa
+  p224_copy_conditional(x_out, x2, z1_is_zero);
+  p224_copy_conditional(x_out, x1, z2_is_zero);
+  p224_copy_conditional(y_out, y2, z1_is_zero);
+  p224_copy_conditional(y_out, y1, z2_is_zero);
+  p224_copy_conditional(z_out, z2, z1_is_zero);
+  p224_copy_conditional(z_out, z1, z2_is_zero);
+  p224_felem_assign(x3, x_out);
+  p224_felem_assign(y3, y_out);
+  p224_felem_assign(z3, z_out);
+}
+
+// p224_select_point selects the |idx|th point from a precomputation table and
+// copies it to out.
+static void p224_select_point(const uint64_t idx, size_t size,
+                              const p224_felem pre_comp[/*size*/][3],
+                              p224_felem out[3]) {
+  p224_limb *outlimbs = &out[0][0];
+  OPENSSL_memset(outlimbs, 0, 3 * sizeof(p224_felem));
+
+  for (size_t i = 0; i < size; i++) {
+    const p224_limb *inlimbs = &pre_comp[i][0][0];
+    uint64_t mask = i ^ idx;
+    mask |= mask >> 4;
+    mask |= mask >> 2;
+    mask |= mask >> 1;
+    mask &= 1;
+    mask--;
+    for (size_t j = 0; j < 4 * 3; j++) {
+      outlimbs[j] |= inlimbs[j] & mask;
+    }
+  }
+}
+
+// p224_get_bit returns the |i|th bit in |in|
+static char p224_get_bit(const p224_felem_bytearray in, size_t i) {
+  if (i >= 224) {
+    return 0;
+  }
+  return (in[i >> 3] >> (i & 7)) & 1;
+}
+
+// Takes the Jacobian coordinates (X, Y, Z) of a point and returns
+// (X', Y') = (X/Z^2, Y/Z^3)
+static int ec_GFp_nistp224_point_get_affine_coordinates(
+    const EC_GROUP *group, const EC_RAW_POINT *point, EC_FELEM *x,
+    EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  p224_felem z1, z2;
+  p224_widefelem tmp;
+  p224_generic_to_felem(z1, &point->Z);
+  p224_felem_inv(z2, z1);
+  p224_felem_square(tmp, z2);
+  p224_felem_reduce(z1, tmp);
+
+  if (x != NULL) {
+    p224_felem x_in, x_out;
+    p224_generic_to_felem(x_in, &point->X);
+    p224_felem_mul(tmp, x_in, z1);
+    p224_felem_reduce(x_out, tmp);
+    p224_felem_to_generic(x, x_out);
+  }
+
+  if (y != NULL) {
+    p224_felem y_in, y_out;
+    p224_generic_to_felem(y_in, &point->Y);
+    p224_felem_mul(tmp, z1, z2);
+    p224_felem_reduce(z1, tmp);
+    p224_felem_mul(tmp, y_in, z1);
+    p224_felem_reduce(y_out, tmp);
+    p224_felem_to_generic(y, y_out);
+  }
+
+  return 1;
+}
+
+static void ec_GFp_nistp224_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  p224_felem x1, y1, z1, x2, y2, z2;
+  p224_generic_to_felem(x1, &a->X);
+  p224_generic_to_felem(y1, &a->Y);
+  p224_generic_to_felem(z1, &a->Z);
+  p224_generic_to_felem(x2, &b->X);
+  p224_generic_to_felem(y2, &b->Y);
+  p224_generic_to_felem(z2, &b->Z);
+  p224_point_add(x1, y1, z1, x1, y1, z1, 0 /* both Jacobian */, x2, y2, z2);
+  // The outputs are already reduced, but still need to be contracted.
+  p224_felem_to_generic(&r->X, x1);
+  p224_felem_to_generic(&r->Y, y1);
+  p224_felem_to_generic(&r->Z, z1);
+}
+
+static void ec_GFp_nistp224_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a) {
+  p224_felem x, y, z;
+  p224_generic_to_felem(x, &a->X);
+  p224_generic_to_felem(y, &a->Y);
+  p224_generic_to_felem(z, &a->Z);
+  p224_point_double(x, y, z, x, y, z);
+  // The outputs are already reduced, but still need to be contracted.
+  p224_felem_to_generic(&r->X, x);
+  p224_felem_to_generic(&r->Y, y);
+  p224_felem_to_generic(&r->Z, z);
+}
+
+static void ec_GFp_nistp224_make_precomp(p224_felem out[17][3],
+                                         const EC_RAW_POINT *p) {
+  OPENSSL_memset(out[0], 0, sizeof(p224_felem) * 3);
+
+  p224_generic_to_felem(out[1][0], &p->X);
+  p224_generic_to_felem(out[1][1], &p->Y);
+  p224_generic_to_felem(out[1][2], &p->Z);
+
+  for (size_t j = 2; j <= 16; ++j) {
+    if (j & 1) {
+      p224_point_add(out[j][0], out[j][1], out[j][2], out[1][0], out[1][1],
+                     out[1][2], 0, out[j - 1][0], out[j - 1][1], out[j - 1][2]);
+    } else {
+      p224_point_double(out[j][0], out[j][1], out[j][2], out[j / 2][0],
+                        out[j / 2][1], out[j / 2][2]);
+    }
+  }
+}
+
+static void ec_GFp_nistp224_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *scalar) {
+  p224_felem p_pre_comp[17][3];
+  ec_GFp_nistp224_make_precomp(p_pre_comp, p);
+
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[4];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 220; i < 221; i--) {
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // Add every 5 doublings.
+    if (i % 5 == 0) {
+      uint64_t bits = p224_get_bit(scalar->bytes, i + 4) << 5;
+      bits |= p224_get_bit(scalar->bytes, i + 3) << 4;
+      bits |= p224_get_bit(scalar->bytes, i + 2) << 3;
+      bits |= p224_get_bit(scalar->bytes, i + 1) << 2;
+      bits |= p224_get_bit(scalar->bytes, i) << 1;
+      bits |= p224_get_bit(scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // Select the point to add or subtract.
+      p224_select_point(digit, 17, (const p224_felem(*)[3])p_pre_comp, tmp);
+      p224_felem_neg(tmp[3], tmp[1]);  // (X, -Y, Z) is the negative point
+      p224_copy_conditional(tmp[1], tmp[3], sign);
+
+      if (!skip) {
+        p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                       tmp[0], tmp[1], tmp[2]);
+      } else {
+        OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+        skip = 0;
+      }
+    }
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_point_mul_base(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *scalar) {
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[3];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 27; i < 28; i--) {
+    // double
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // First, look 28 bits upwards.
+    uint64_t bits = p224_get_bit(scalar->bytes, i + 196) << 3;
+    bits |= p224_get_bit(scalar->bytes, i + 140) << 2;
+    bits |= p224_get_bit(scalar->bytes, i + 84) << 1;
+    bits |= p224_get_bit(scalar->bytes, i + 28);
+    // Select the point to add, in constant time.
+    p224_select_point(bits, 16, g_p224_pre_comp[1], tmp);
+
+    if (!skip) {
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     tmp[0], tmp[1], tmp[2]);
+    } else {
+      OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+      skip = 0;
+    }
+
+    // Second, look at the current position/
+    bits = p224_get_bit(scalar->bytes, i + 168) << 3;
+    bits |= p224_get_bit(scalar->bytes, i + 112) << 2;
+    bits |= p224_get_bit(scalar->bytes, i + 56) << 1;
+    bits |= p224_get_bit(scalar->bytes, i);
+    // Select the point to add, in constant time.
+    p224_select_point(bits, 16, g_p224_pre_comp[0], tmp);
+    p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                   tmp[0], tmp[1], tmp[2]);
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_point_mul_public(const EC_GROUP *group,
+                                             EC_RAW_POINT *r,
+                                             const EC_SCALAR *g_scalar,
+                                             const EC_RAW_POINT *p,
+                                             const EC_SCALAR *p_scalar) {
+  // TODO(davidben): If P-224 ECDSA verify performance ever matters, using
+  // |ec_compute_wNAF| for |p_scalar| would likely be an easy improvement.
+  p224_felem p_pre_comp[17][3];
+  ec_GFp_nistp224_make_precomp(p_pre_comp, p);
+
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[3];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  // Loop over both scalars msb-to-lsb, interleaving additions of multiples of
+  // the generator (two in each of the last 28 rounds) and additions of p (every
+  // 5th round).
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 220; i < 221; i--) {
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // Add multiples of the generator.
+    if (i <= 27) {
+      // First, look 28 bits upwards.
+      uint64_t bits = p224_get_bit(g_scalar->bytes, i + 196) << 3;
+      bits |= p224_get_bit(g_scalar->bytes, i + 140) << 2;
+      bits |= p224_get_bit(g_scalar->bytes, i + 84) << 1;
+      bits |= p224_get_bit(g_scalar->bytes, i + 28);
+
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     g_p224_pre_comp[1][bits][0], g_p224_pre_comp[1][bits][1],
+                     g_p224_pre_comp[1][bits][2]);
+      assert(!skip);
+
+      // Second, look at the current position.
+      bits = p224_get_bit(g_scalar->bytes, i + 168) << 3;
+      bits |= p224_get_bit(g_scalar->bytes, i + 112) << 2;
+      bits |= p224_get_bit(g_scalar->bytes, i + 56) << 1;
+      bits |= p224_get_bit(g_scalar->bytes, i);
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     g_p224_pre_comp[0][bits][0], g_p224_pre_comp[0][bits][1],
+                     g_p224_pre_comp[0][bits][2]);
+    }
+
+    // Incorporate |p_scalar| every 5 doublings.
+    if (i % 5 == 0) {
+      uint64_t bits = p224_get_bit(p_scalar->bytes, i + 4) << 5;
+      bits |= p224_get_bit(p_scalar->bytes, i + 3) << 4;
+      bits |= p224_get_bit(p_scalar->bytes, i + 2) << 3;
+      bits |= p224_get_bit(p_scalar->bytes, i + 1) << 2;
+      bits |= p224_get_bit(p_scalar->bytes, i) << 1;
+      bits |= p224_get_bit(p_scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // Select the point to add or subtract.
+      OPENSSL_memcpy(tmp, p_pre_comp[digit], 3 * sizeof(p224_felem));
+      if (sign) {
+        p224_felem_neg(tmp[1], tmp[1]);  // (X, -Y, Z) is the negative point
+      }
+
+      if (!skip) {
+        p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                       tmp[0], tmp[1], tmp[2]);
+      } else {
+        OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+        skip = 0;
+      }
+    }
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_felem_mul(const EC_GROUP *group, EC_FELEM *r,
+                                      const EC_FELEM *a, const EC_FELEM *b) {
+  p224_felem felem1, felem2;
+  p224_widefelem wide;
+  p224_generic_to_felem(felem1, a);
+  p224_generic_to_felem(felem2, b);
+  p224_felem_mul(wide, felem1, felem2);
+  p224_felem_reduce(felem1, wide);
+  p224_felem_to_generic(r, felem1);
+}
+
+static void ec_GFp_nistp224_felem_sqr(const EC_GROUP *group, EC_FELEM *r,
+                                      const EC_FELEM *a) {
+  p224_felem felem;
+  p224_generic_to_felem(felem, a);
+  p224_widefelem wide;
+  p224_felem_square(wide, felem);
+  p224_felem_reduce(felem, wide);
+  p224_felem_to_generic(r, felem);
+}
+
+static int ec_GFp_nistp224_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                           const BIGNUM *in) {
+  return bn_copy_words(out->words, group->field.width, in);
+}
+
+static int ec_GFp_nistp224_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                           const EC_FELEM *in) {
+  return bn_set_words(out, in->words, group->field.width);
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistp224_method) {
+  out->group_init = ec_GFp_simple_group_init;
+  out->group_finish = ec_GFp_simple_group_finish;
+  out->group_set_curve = ec_GFp_simple_group_set_curve;
+  out->point_get_affine_coordinates =
+      ec_GFp_nistp224_point_get_affine_coordinates;
+  out->add = ec_GFp_nistp224_add;
+  out->dbl = ec_GFp_nistp224_dbl;
+  out->mul = ec_GFp_nistp224_point_mul;
+  out->mul_base = ec_GFp_nistp224_point_mul_base;
+  out->mul_public = ec_GFp_nistp224_point_mul_public;
+  out->felem_mul = ec_GFp_nistp224_felem_mul;
+  out->felem_sqr = ec_GFp_nistp224_felem_sqr;
+  out->bignum_to_felem = ec_GFp_nistp224_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_nistp224_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_simple_cmp_x_coordinate;
+}
+
+#endif  // BORINGSSL_HAS_UINT128 && !SMALL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c.grpc_back
new file mode 100644
index 0000000..f8af39b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p224-64.c.grpc_back	
@@ -0,0 +1,1187 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// A 64-bit implementation of the NIST P-224 elliptic curve point multiplication
+//
+// Inspired by Daniel J. Bernstein's public domain nistp224 implementation
+// and Adam Langley's public domain 64-bit C implementation of curve25519.
+
+#include <openssl/base.h>
+
+#include <openssl/bn.h>
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include <string.h>
+
+#include "internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+#if defined(BORINGSSL_HAS_UINT128) && !defined(OPENSSL_SMALL)
+
+// Field elements are represented as a_0 + 2^56*a_1 + 2^112*a_2 + 2^168*a_3
+// using 64-bit coefficients called 'limbs', and sometimes (for multiplication
+// results) as b_0 + 2^56*b_1 + 2^112*b_2 + 2^168*b_3 + 2^224*b_4 + 2^280*b_5 +
+// 2^336*b_6 using 128-bit coefficients called 'widelimbs'. A 4-p224_limb
+// representation is an 'p224_felem'; a 7-p224_widelimb representation is a
+// 'p224_widefelem'. Even within felems, bits of adjacent limbs overlap, and we
+// don't always reduce the representations: we ensure that inputs to each
+// p224_felem multiplication satisfy a_i < 2^60, so outputs satisfy b_i <
+// 4*2^60*2^60, and fit into a 128-bit word without overflow. The coefficients
+// are then again partially reduced to obtain an p224_felem satisfying a_i <
+// 2^57. We only reduce to the unique minimal representation at the end of the
+// computation.
+
+typedef uint64_t p224_limb;
+typedef uint128_t p224_widelimb;
+
+typedef p224_limb p224_felem[4];
+typedef p224_widelimb p224_widefelem[7];
+
+// Field element represented as a byte arrary. 28*8 = 224 bits is also the
+// group order size for the elliptic curve, and we also use this type for
+// scalars for point multiplication.
+typedef uint8_t p224_felem_bytearray[28];
+
+// Precomputed multiples of the standard generator
+// Points are given in coordinates (X, Y, Z) where Z normally is 1
+// (0 for the point at infinity).
+// For each field element, slice a_0 is word 0, etc.
+//
+// The table has 2 * 16 elements, starting with the following:
+// index | bits    | point
+// ------+---------+------------------------------
+//     0 | 0 0 0 0 | 0G
+//     1 | 0 0 0 1 | 1G
+//     2 | 0 0 1 0 | 2^56G
+//     3 | 0 0 1 1 | (2^56 + 1)G
+//     4 | 0 1 0 0 | 2^112G
+//     5 | 0 1 0 1 | (2^112 + 1)G
+//     6 | 0 1 1 0 | (2^112 + 2^56)G
+//     7 | 0 1 1 1 | (2^112 + 2^56 + 1)G
+//     8 | 1 0 0 0 | 2^168G
+//     9 | 1 0 0 1 | (2^168 + 1)G
+//    10 | 1 0 1 0 | (2^168 + 2^56)G
+//    11 | 1 0 1 1 | (2^168 + 2^56 + 1)G
+//    12 | 1 1 0 0 | (2^168 + 2^112)G
+//    13 | 1 1 0 1 | (2^168 + 2^112 + 1)G
+//    14 | 1 1 1 0 | (2^168 + 2^112 + 2^56)G
+//    15 | 1 1 1 1 | (2^168 + 2^112 + 2^56 + 1)G
+// followed by a copy of this with each element multiplied by 2^28.
+//
+// The reason for this is so that we can clock bits into four different
+// locations when doing simple scalar multiplies against the base point,
+// and then another four locations using the second 16 elements.
+static const p224_felem g_p224_pre_comp[2][16][3] = {
+    {{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}},
+     {{0x3280d6115c1d21, 0xc1d356c2112234, 0x7f321390b94a03, 0xb70e0cbd6bb4bf},
+      {0xd5819985007e34, 0x75a05a07476444, 0xfb4c22dfe6cd43, 0xbd376388b5f723},
+      {1, 0, 0, 0}},
+     {{0xfd9675666ebbe9, 0xbca7664d40ce5e, 0x2242df8d8a2a43, 0x1f49bbb0f99bc5},
+      {0x29e0b892dc9c43, 0xece8608436e662, 0xdc858f185310d0, 0x9812dd4eb8d321},
+      {1, 0, 0, 0}},
+     {{0x6d3e678d5d8eb8, 0x559eed1cb362f1, 0x16e9a3bbce8a3f, 0xeedcccd8c2a748},
+      {0xf19f90ed50266d, 0xabf2b4bf65f9df, 0x313865468fafec, 0x5cb379ba910a17},
+      {1, 0, 0, 0}},
+     {{0x0641966cab26e3, 0x91fb2991fab0a0, 0xefec27a4e13a0b, 0x0499aa8a5f8ebe},
+      {0x7510407766af5d, 0x84d929610d5450, 0x81d77aae82f706, 0x6916f6d4338c5b},
+      {1, 0, 0, 0}},
+     {{0xea95ac3b1f15c6, 0x086000905e82d4, 0xdd323ae4d1c8b1, 0x932b56be7685a3},
+      {0x9ef93dea25dbbf, 0x41665960f390f0, 0xfdec76dbe2a8a7, 0x523e80f019062a},
+      {1, 0, 0, 0}},
+     {{0x822fdd26732c73, 0xa01c83531b5d0f, 0x363f37347c1ba4, 0xc391b45c84725c},
+      {0xbbd5e1b2d6ad24, 0xddfbcde19dfaec, 0xc393da7e222a7f, 0x1efb7890ede244},
+      {1, 0, 0, 0}},
+     {{0x4c9e90ca217da1, 0xd11beca79159bb, 0xff8d33c2c98b7c, 0x2610b39409f849},
+      {0x44d1352ac64da0, 0xcdbb7b2c46b4fb, 0x966c079b753c89, 0xfe67e4e820b112},
+      {1, 0, 0, 0}},
+     {{0xe28cae2df5312d, 0xc71b61d16f5c6e, 0x79b7619a3e7c4c, 0x05c73240899b47},
+      {0x9f7f6382c73e3a, 0x18615165c56bda, 0x641fab2116fd56, 0x72855882b08394},
+      {1, 0, 0, 0}},
+     {{0x0469182f161c09, 0x74a98ca8d00fb5, 0xb89da93489a3e0, 0x41c98768fb0c1d},
+      {0xe5ea05fb32da81, 0x3dce9ffbca6855, 0x1cfe2d3fbf59e6, 0x0e5e03408738a7},
+      {1, 0, 0, 0}},
+     {{0xdab22b2333e87f, 0x4430137a5dd2f6, 0xe03ab9f738beb8, 0xcb0c5d0dc34f24},
+      {0x764a7df0c8fda5, 0x185ba5c3fa2044, 0x9281d688bcbe50, 0xc40331df893881},
+      {1, 0, 0, 0}},
+     {{0xb89530796f0f60, 0xade92bd26909a3, 0x1a0c83fb4884da, 0x1765bf22a5a984},
+      {0x772a9ee75db09e, 0x23bc6c67cec16f, 0x4c1edba8b14e2f, 0xe2a215d9611369},
+      {1, 0, 0, 0}},
+     {{0x571e509fb5efb3, 0xade88696410552, 0xc8ae85fada74fe, 0x6c7e4be83bbde3},
+      {0xff9f51160f4652, 0xb47ce2495a6539, 0xa2946c53b582f4, 0x286d2db3ee9a60},
+      {1, 0, 0, 0}},
+     {{0x40bbd5081a44af, 0x0995183b13926c, 0xbcefba6f47f6d0, 0x215619e9cc0057},
+      {0x8bc94d3b0df45e, 0xf11c54a3694f6f, 0x8631b93cdfe8b5, 0xe7e3f4b0982db9},
+      {1, 0, 0, 0}},
+     {{0xb17048ab3e1c7b, 0xac38f36ff8a1d8, 0x1c29819435d2c6, 0xc813132f4c07e9},
+      {0x2891425503b11f, 0x08781030579fea, 0xf5426ba5cc9674, 0x1e28ebf18562bc},
+      {1, 0, 0, 0}},
+     {{0x9f31997cc864eb, 0x06cd91d28b5e4c, 0xff17036691a973, 0xf1aef351497c58},
+      {0xdd1f2d600564ff, 0xdead073b1402db, 0x74a684435bd693, 0xeea7471f962558},
+      {1, 0, 0, 0}}},
+    {{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}},
+     {{0x9665266dddf554, 0x9613d78b60ef2d, 0xce27a34cdba417, 0xd35ab74d6afc31},
+      {0x85ccdd22deb15e, 0x2137e5783a6aab, 0xa141cffd8c93c6, 0x355a1830e90f2d},
+      {1, 0, 0, 0}},
+     {{0x1a494eadaade65, 0xd6da4da77fe53c, 0xe7992996abec86, 0x65c3553c6090e3},
+      {0xfa610b1fb09346, 0xf1c6540b8a4aaf, 0xc51a13ccd3cbab, 0x02995b1b18c28a},
+      {1, 0, 0, 0}},
+     {{0x7874568e7295ef, 0x86b419fbe38d04, 0xdc0690a7550d9a, 0xd3966a44beac33},
+      {0x2b7280ec29132f, 0xbeaa3b6a032df3, 0xdc7dd88ae41200, 0xd25e2513e3a100},
+      {1, 0, 0, 0}},
+     {{0x924857eb2efafd, 0xac2bce41223190, 0x8edaa1445553fc, 0x825800fd3562d5},
+      {0x8d79148ea96621, 0x23a01c3dd9ed8d, 0xaf8b219f9416b5, 0xd8db0cc277daea},
+      {1, 0, 0, 0}},
+     {{0x76a9c3b1a700f0, 0xe9acd29bc7e691, 0x69212d1a6b0327, 0x6322e97fe154be},
+      {0x469fc5465d62aa, 0x8d41ed18883b05, 0x1f8eae66c52b88, 0xe4fcbe9325be51},
+      {1, 0, 0, 0}},
+     {{0x825fdf583cac16, 0x020b857c7b023a, 0x683c17744b0165, 0x14ffd0a2daf2f1},
+      {0x323b36184218f9, 0x4944ec4e3b47d4, 0xc15b3080841acf, 0x0bced4b01a28bb},
+      {1, 0, 0, 0}},
+     {{0x92ac22230df5c4, 0x52f33b4063eda8, 0xcb3f19870c0c93, 0x40064f2ba65233},
+      {0xfe16f0924f8992, 0x012da25af5b517, 0x1a57bb24f723a6, 0x06f8bc76760def},
+      {1, 0, 0, 0}},
+     {{0x4a7084f7817cb9, 0xbcab0738ee9a78, 0x3ec11e11d9c326, 0xdc0fe90e0f1aae},
+      {0xcf639ea5f98390, 0x5c350aa22ffb74, 0x9afae98a4047b7, 0x956ec2d617fc45},
+      {1, 0, 0, 0}},
+     {{0x4306d648c1be6a, 0x9247cd8bc9a462, 0xf5595e377d2f2e, 0xbd1c3caff1a52e},
+      {0x045e14472409d0, 0x29f3e17078f773, 0x745a602b2d4f7d, 0x191837685cdfbb},
+      {1, 0, 0, 0}},
+     {{0x5b6ee254a8cb79, 0x4953433f5e7026, 0xe21faeb1d1def4, 0xc4c225785c09de},
+      {0x307ce7bba1e518, 0x31b125b1036db8, 0x47e91868839e8f, 0xc765866e33b9f3},
+      {1, 0, 0, 0}},
+     {{0x3bfece24f96906, 0x4794da641e5093, 0xde5df64f95db26, 0x297ecd89714b05},
+      {0x701bd3ebb2c3aa, 0x7073b4f53cb1d5, 0x13c5665658af16, 0x9895089d66fe58},
+      {1, 0, 0, 0}},
+     {{0x0fef05f78c4790, 0x2d773633b05d2e, 0x94229c3a951c94, 0xbbbd70df4911bb},
+      {0xb2c6963d2c1168, 0x105f47a72b0d73, 0x9fdf6111614080, 0x7b7e94b39e67b0},
+      {1, 0, 0, 0}},
+     {{0xad1a7d6efbe2b3, 0xf012482c0da69d, 0x6b3bdf12438345, 0x40d7558d7aa4d9},
+      {0x8a09fffb5c6d3d, 0x9a356e5d9ffd38, 0x5973f15f4f9b1c, 0xdcd5f59f63c3ea},
+      {1, 0, 0, 0}},
+     {{0xacf39f4c5ca7ab, 0x4c8071cc5fd737, 0xc64e3602cd1184, 0x0acd4644c9abba},
+      {0x6c011a36d8bf6e, 0xfecd87ba24e32a, 0x19f6f56574fad8, 0x050b204ced9405},
+      {1, 0, 0, 0}},
+     {{0xed4f1cae7d9a96, 0x5ceef7ad94c40a, 0x778e4a3bf3ef9b, 0x7405783dc3b55e},
+      {0x32477c61b6e8c6, 0xb46a97570f018b, 0x91176d0a7e95d1, 0x3df90fbc4c7d0e},
+      {1, 0, 0, 0}}}};
+
+static uint64_t p224_load_u64(const uint8_t in[8]) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, in, sizeof(ret));
+  return ret;
+}
+
+// Helper functions to convert field elements to/from internal representation
+static void p224_bin28_to_felem(p224_felem out, const uint8_t in[28]) {
+  out[0] = p224_load_u64(in) & 0x00ffffffffffffff;
+  out[1] = p224_load_u64(in + 7) & 0x00ffffffffffffff;
+  out[2] = p224_load_u64(in + 14) & 0x00ffffffffffffff;
+  out[3] = p224_load_u64(in + 20) >> 8;
+}
+
+static void p224_felem_to_bin28(uint8_t out[28], const p224_felem in) {
+  for (size_t i = 0; i < 7; ++i) {
+    out[i] = in[0] >> (8 * i);
+    out[i + 7] = in[1] >> (8 * i);
+    out[i + 14] = in[2] >> (8 * i);
+    out[i + 21] = in[3] >> (8 * i);
+  }
+}
+
+static void p224_generic_to_felem(p224_felem out, const EC_FELEM *in) {
+  p224_bin28_to_felem(out, in->bytes);
+}
+
+// Requires 0 <= in < 2*p (always call p224_felem_reduce first)
+static void p224_felem_to_generic(EC_FELEM *out, const p224_felem in) {
+  // Reduce to unique minimal representation.
+  static const int64_t two56 = ((p224_limb)1) << 56;
+  // 0 <= in < 2*p, p = 2^224 - 2^96 + 1
+  // if in > p , reduce in = in - 2^224 + 2^96 - 1
+  int64_t tmp[4], a;
+  tmp[0] = in[0];
+  tmp[1] = in[1];
+  tmp[2] = in[2];
+  tmp[3] = in[3];
+  // Case 1: a = 1 iff in >= 2^224
+  a = (in[3] >> 56);
+  tmp[0] -= a;
+  tmp[1] += a << 40;
+  tmp[3] &= 0x00ffffffffffffff;
+  // Case 2: a = 0 iff p <= in < 2^224, i.e., the high 128 bits are all 1 and
+  // the lower part is non-zero
+  a = ((in[3] & in[2] & (in[1] | 0x000000ffffffffff)) + 1) |
+      (((int64_t)(in[0] + (in[1] & 0x000000ffffffffff)) - 1) >> 63);
+  a &= 0x00ffffffffffffff;
+  // turn a into an all-one mask (if a = 0) or an all-zero mask
+  a = (a - 1) >> 63;
+  // subtract 2^224 - 2^96 + 1 if a is all-one
+  tmp[3] &= a ^ 0xffffffffffffffff;
+  tmp[2] &= a ^ 0xffffffffffffffff;
+  tmp[1] &= (a ^ 0xffffffffffffffff) | 0x000000ffffffffff;
+  tmp[0] -= 1 & a;
+
+  // eliminate negative coefficients: if tmp[0] is negative, tmp[1] must
+  // be non-zero, so we only need one step
+  a = tmp[0] >> 63;
+  tmp[0] += two56 & a;
+  tmp[1] -= 1 & a;
+
+  // carry 1 -> 2 -> 3
+  tmp[2] += tmp[1] >> 56;
+  tmp[1] &= 0x00ffffffffffffff;
+
+  tmp[3] += tmp[2] >> 56;
+  tmp[2] &= 0x00ffffffffffffff;
+
+  // Now 0 <= tmp < p
+  p224_felem tmp2;
+  tmp2[0] = tmp[0];
+  tmp2[1] = tmp[1];
+  tmp2[2] = tmp[2];
+  tmp2[3] = tmp[3];
+
+  p224_felem_to_bin28(out->bytes, tmp2);
+  // 224 is not a multiple of 64, so zero the remaining bytes.
+  OPENSSL_memset(out->bytes + 28, 0, 32 - 28);
+}
+
+
+// Field operations, using the internal representation of field elements.
+// NB! These operations are specific to our point multiplication and cannot be
+// expected to be correct in general - e.g., multiplication with a large scalar
+// will cause an overflow.
+
+static void p224_felem_assign(p224_felem out, const p224_felem in) {
+  out[0] = in[0];
+  out[1] = in[1];
+  out[2] = in[2];
+  out[3] = in[3];
+}
+
+// Sum two field elements: out += in
+static void p224_felem_sum(p224_felem out, const p224_felem in) {
+  out[0] += in[0];
+  out[1] += in[1];
+  out[2] += in[2];
+  out[3] += in[3];
+}
+
+// Subtract field elements: out -= in
+// Assumes in[i] < 2^57
+static void p224_felem_diff(p224_felem out, const p224_felem in) {
+  static const p224_limb two58p2 =
+      (((p224_limb)1) << 58) + (((p224_limb)1) << 2);
+  static const p224_limb two58m2 =
+      (((p224_limb)1) << 58) - (((p224_limb)1) << 2);
+  static const p224_limb two58m42m2 =
+      (((p224_limb)1) << 58) - (((p224_limb)1) << 42) - (((p224_limb)1) << 2);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two58p2;
+  out[1] += two58m42m2;
+  out[2] += two58m2;
+  out[3] += two58m2;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+}
+
+// Subtract in unreduced 128-bit mode: out -= in
+// Assumes in[i] < 2^119
+static void p224_widefelem_diff(p224_widefelem out, const p224_widefelem in) {
+  static const p224_widelimb two120 = ((p224_widelimb)1) << 120;
+  static const p224_widelimb two120m64 =
+      (((p224_widelimb)1) << 120) - (((p224_widelimb)1) << 64);
+  static const p224_widelimb two120m104m64 = (((p224_widelimb)1) << 120) -
+                                             (((p224_widelimb)1) << 104) -
+                                             (((p224_widelimb)1) << 64);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two120;
+  out[1] += two120m64;
+  out[2] += two120m64;
+  out[3] += two120;
+  out[4] += two120m104m64;
+  out[5] += two120m64;
+  out[6] += two120m64;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+  out[4] -= in[4];
+  out[5] -= in[5];
+  out[6] -= in[6];
+}
+
+// Subtract in mixed mode: out128 -= in64
+// in[i] < 2^63
+static void p224_felem_diff_128_64(p224_widefelem out, const p224_felem in) {
+  static const p224_widelimb two64p8 =
+      (((p224_widelimb)1) << 64) + (((p224_widelimb)1) << 8);
+  static const p224_widelimb two64m8 =
+      (((p224_widelimb)1) << 64) - (((p224_widelimb)1) << 8);
+  static const p224_widelimb two64m48m8 = (((p224_widelimb)1) << 64) -
+                                          (((p224_widelimb)1) << 48) -
+                                          (((p224_widelimb)1) << 8);
+
+  // Add 0 mod 2^224-2^96+1 to ensure out > in
+  out[0] += two64p8;
+  out[1] += two64m48m8;
+  out[2] += two64m8;
+  out[3] += two64m8;
+
+  out[0] -= in[0];
+  out[1] -= in[1];
+  out[2] -= in[2];
+  out[3] -= in[3];
+}
+
+// Multiply a field element by a scalar: out = out * scalar
+// The scalars we actually use are small, so results fit without overflow
+static void p224_felem_scalar(p224_felem out, const p224_limb scalar) {
+  out[0] *= scalar;
+  out[1] *= scalar;
+  out[2] *= scalar;
+  out[3] *= scalar;
+}
+
+// Multiply an unreduced field element by a scalar: out = out * scalar
+// The scalars we actually use are small, so results fit without overflow
+static void p224_widefelem_scalar(p224_widefelem out,
+                                  const p224_widelimb scalar) {
+  out[0] *= scalar;
+  out[1] *= scalar;
+  out[2] *= scalar;
+  out[3] *= scalar;
+  out[4] *= scalar;
+  out[5] *= scalar;
+  out[6] *= scalar;
+}
+
+// Square a field element: out = in^2
+static void p224_felem_square(p224_widefelem out, const p224_felem in) {
+  p224_limb tmp0, tmp1, tmp2;
+  tmp0 = 2 * in[0];
+  tmp1 = 2 * in[1];
+  tmp2 = 2 * in[2];
+  out[0] = ((p224_widelimb)in[0]) * in[0];
+  out[1] = ((p224_widelimb)in[0]) * tmp1;
+  out[2] = ((p224_widelimb)in[0]) * tmp2 + ((p224_widelimb)in[1]) * in[1];
+  out[3] = ((p224_widelimb)in[3]) * tmp0 + ((p224_widelimb)in[1]) * tmp2;
+  out[4] = ((p224_widelimb)in[3]) * tmp1 + ((p224_widelimb)in[2]) * in[2];
+  out[5] = ((p224_widelimb)in[3]) * tmp2;
+  out[6] = ((p224_widelimb)in[3]) * in[3];
+}
+
+// Multiply two field elements: out = in1 * in2
+static void p224_felem_mul(p224_widefelem out, const p224_felem in1,
+                           const p224_felem in2) {
+  out[0] = ((p224_widelimb)in1[0]) * in2[0];
+  out[1] = ((p224_widelimb)in1[0]) * in2[1] + ((p224_widelimb)in1[1]) * in2[0];
+  out[2] = ((p224_widelimb)in1[0]) * in2[2] + ((p224_widelimb)in1[1]) * in2[1] +
+           ((p224_widelimb)in1[2]) * in2[0];
+  out[3] = ((p224_widelimb)in1[0]) * in2[3] + ((p224_widelimb)in1[1]) * in2[2] +
+           ((p224_widelimb)in1[2]) * in2[1] + ((p224_widelimb)in1[3]) * in2[0];
+  out[4] = ((p224_widelimb)in1[1]) * in2[3] + ((p224_widelimb)in1[2]) * in2[2] +
+           ((p224_widelimb)in1[3]) * in2[1];
+  out[5] = ((p224_widelimb)in1[2]) * in2[3] + ((p224_widelimb)in1[3]) * in2[2];
+  out[6] = ((p224_widelimb)in1[3]) * in2[3];
+}
+
+// Reduce seven 128-bit coefficients to four 64-bit coefficients.
+// Requires in[i] < 2^126,
+// ensures out[0] < 2^56, out[1] < 2^56, out[2] < 2^56, out[3] <= 2^56 + 2^16
+static void p224_felem_reduce(p224_felem out, const p224_widefelem in) {
+  static const p224_widelimb two127p15 =
+      (((p224_widelimb)1) << 127) + (((p224_widelimb)1) << 15);
+  static const p224_widelimb two127m71 =
+      (((p224_widelimb)1) << 127) - (((p224_widelimb)1) << 71);
+  static const p224_widelimb two127m71m55 = (((p224_widelimb)1) << 127) -
+                                            (((p224_widelimb)1) << 71) -
+                                            (((p224_widelimb)1) << 55);
+  p224_widelimb output[5];
+
+  // Add 0 mod 2^224-2^96+1 to ensure all differences are positive
+  output[0] = in[0] + two127p15;
+  output[1] = in[1] + two127m71m55;
+  output[2] = in[2] + two127m71;
+  output[3] = in[3];
+  output[4] = in[4];
+
+  // Eliminate in[4], in[5], in[6]
+  output[4] += in[6] >> 16;
+  output[3] += (in[6] & 0xffff) << 40;
+  output[2] -= in[6];
+
+  output[3] += in[5] >> 16;
+  output[2] += (in[5] & 0xffff) << 40;
+  output[1] -= in[5];
+
+  output[2] += output[4] >> 16;
+  output[1] += (output[4] & 0xffff) << 40;
+  output[0] -= output[4];
+
+  // Carry 2 -> 3 -> 4
+  output[3] += output[2] >> 56;
+  output[2] &= 0x00ffffffffffffff;
+
+  output[4] = output[3] >> 56;
+  output[3] &= 0x00ffffffffffffff;
+
+  // Now output[2] < 2^56, output[3] < 2^56, output[4] < 2^72
+
+  // Eliminate output[4]
+  output[2] += output[4] >> 16;
+  // output[2] < 2^56 + 2^56 = 2^57
+  output[1] += (output[4] & 0xffff) << 40;
+  output[0] -= output[4];
+
+  // Carry 0 -> 1 -> 2 -> 3
+  output[1] += output[0] >> 56;
+  out[0] = output[0] & 0x00ffffffffffffff;
+
+  output[2] += output[1] >> 56;
+  // output[2] < 2^57 + 2^72
+  out[1] = output[1] & 0x00ffffffffffffff;
+  output[3] += output[2] >> 56;
+  // output[3] <= 2^56 + 2^16
+  out[2] = output[2] & 0x00ffffffffffffff;
+
+  // out[0] < 2^56, out[1] < 2^56, out[2] < 2^56,
+  // out[3] <= 2^56 + 2^16 (due to final carry),
+  // so out < 2*p
+  out[3] = output[3];
+}
+
+// Get negative value: out = -in
+// Requires in[i] < 2^63,
+// ensures out[0] < 2^56, out[1] < 2^56, out[2] < 2^56, out[3] <= 2^56 + 2^16
+static void p224_felem_neg(p224_felem out, const p224_felem in) {
+  p224_widefelem tmp = {0};
+  p224_felem_diff_128_64(tmp, in);
+  p224_felem_reduce(out, tmp);
+}
+
+// Zero-check: returns 1 if input is 0, and 0 otherwise. We know that field
+// elements are reduced to in < 2^225, so we only need to check three cases: 0,
+// 2^224 - 2^96 + 1, and 2^225 - 2^97 + 2
+static p224_limb p224_felem_is_zero(const p224_felem in) {
+  p224_limb zero = in[0] | in[1] | in[2] | in[3];
+  zero = (((int64_t)(zero)-1) >> 63) & 1;
+
+  p224_limb two224m96p1 = (in[0] ^ 1) | (in[1] ^ 0x00ffff0000000000) |
+                     (in[2] ^ 0x00ffffffffffffff) |
+                     (in[3] ^ 0x00ffffffffffffff);
+  two224m96p1 = (((int64_t)(two224m96p1)-1) >> 63) & 1;
+  p224_limb two225m97p2 = (in[0] ^ 2) | (in[1] ^ 0x00fffe0000000000) |
+                     (in[2] ^ 0x00ffffffffffffff) |
+                     (in[3] ^ 0x01ffffffffffffff);
+  two225m97p2 = (((int64_t)(two225m97p2)-1) >> 63) & 1;
+  return (zero | two224m96p1 | two225m97p2);
+}
+
+// Invert a field element
+// Computation chain copied from djb's code
+static void p224_felem_inv(p224_felem out, const p224_felem in) {
+  p224_felem ftmp, ftmp2, ftmp3, ftmp4;
+  p224_widefelem tmp;
+
+  p224_felem_square(tmp, in);
+  p224_felem_reduce(ftmp, tmp);  // 2
+  p224_felem_mul(tmp, in, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^2 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^3 - 2
+  p224_felem_mul(tmp, in, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^3 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^4 - 2
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^5 - 4
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^6 - 8
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^6 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^7 - 2
+  for (size_t i = 0; i < 5; ++i) {  // 2^12 - 2^6
+    p224_felem_square(tmp, ftmp2);
+    p224_felem_reduce(ftmp2, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp2, tmp);  // 2^12 - 1
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^13 - 2
+  for (size_t i = 0; i < 11; ++i) {  // 2^24 - 2^12
+    p224_felem_square(tmp, ftmp3);
+    p224_felem_reduce(ftmp3, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp2);
+  p224_felem_reduce(ftmp2, tmp);  // 2^24 - 1
+  p224_felem_square(tmp, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^25 - 2
+  for (size_t i = 0; i < 23; ++i) {  // 2^48 - 2^24
+    p224_felem_square(tmp, ftmp3);
+    p224_felem_reduce(ftmp3, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp2);
+  p224_felem_reduce(ftmp3, tmp);  // 2^48 - 1
+  p224_felem_square(tmp, ftmp3);
+  p224_felem_reduce(ftmp4, tmp);  // 2^49 - 2
+  for (size_t i = 0; i < 47; ++i) {  // 2^96 - 2^48
+    p224_felem_square(tmp, ftmp4);
+    p224_felem_reduce(ftmp4, tmp);
+  }
+  p224_felem_mul(tmp, ftmp3, ftmp4);
+  p224_felem_reduce(ftmp3, tmp);  // 2^96 - 1
+  p224_felem_square(tmp, ftmp3);
+  p224_felem_reduce(ftmp4, tmp);  // 2^97 - 2
+  for (size_t i = 0; i < 23; ++i) {  // 2^120 - 2^24
+    p224_felem_square(tmp, ftmp4);
+    p224_felem_reduce(ftmp4, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp4);
+  p224_felem_reduce(ftmp2, tmp);  // 2^120 - 1
+  for (size_t i = 0; i < 6; ++i) {  // 2^126 - 2^6
+    p224_felem_square(tmp, ftmp2);
+    p224_felem_reduce(ftmp2, tmp);
+  }
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^126 - 1
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);  // 2^127 - 2
+  p224_felem_mul(tmp, ftmp, in);
+  p224_felem_reduce(ftmp, tmp);  // 2^127 - 1
+  for (size_t i = 0; i < 97; ++i) {  // 2^224 - 2^97
+    p224_felem_square(tmp, ftmp);
+    p224_felem_reduce(ftmp, tmp);
+  }
+  p224_felem_mul(tmp, ftmp, ftmp3);
+  p224_felem_reduce(out, tmp);  // 2^224 - 2^96 - 1
+}
+
+// Copy in constant time:
+// if icopy == 1, copy in to out,
+// if icopy == 0, copy out to itself.
+static void p224_copy_conditional(p224_felem out, const p224_felem in,
+                                  p224_limb icopy) {
+  // icopy is a (64-bit) 0 or 1, so copy is either all-zero or all-one
+  const p224_limb copy = -icopy;
+  for (size_t i = 0; i < 4; ++i) {
+    const p224_limb tmp = copy & (in[i] ^ out[i]);
+    out[i] ^= tmp;
+  }
+}
+
+// ELLIPTIC CURVE POINT OPERATIONS
+//
+// Points are represented in Jacobian projective coordinates:
+// (X, Y, Z) corresponds to the affine point (X/Z^2, Y/Z^3),
+// or to the point at infinity if Z == 0.
+
+// Double an elliptic curve point:
+// (X', Y', Z') = 2 * (X, Y, Z), where
+// X' = (3 * (X - Z^2) * (X + Z^2))^2 - 8 * X * Y^2
+// Y' = 3 * (X - Z^2) * (X + Z^2) * (4 * X * Y^2 - X') - 8 * Y^2
+// Z' = (Y + Z)^2 - Y^2 - Z^2 = 2 * Y * Z
+// Outputs can equal corresponding inputs, i.e., x_out == x_in is allowed,
+// while x_out == y_in is not (maybe this works, but it's not tested).
+static void p224_point_double(p224_felem x_out, p224_felem y_out,
+                              p224_felem z_out, const p224_felem x_in,
+                              const p224_felem y_in, const p224_felem z_in) {
+  p224_widefelem tmp, tmp2;
+  p224_felem delta, gamma, beta, alpha, ftmp, ftmp2;
+
+  p224_felem_assign(ftmp, x_in);
+  p224_felem_assign(ftmp2, x_in);
+
+  // delta = z^2
+  p224_felem_square(tmp, z_in);
+  p224_felem_reduce(delta, tmp);
+
+  // gamma = y^2
+  p224_felem_square(tmp, y_in);
+  p224_felem_reduce(gamma, tmp);
+
+  // beta = x*gamma
+  p224_felem_mul(tmp, x_in, gamma);
+  p224_felem_reduce(beta, tmp);
+
+  // alpha = 3*(x-delta)*(x+delta)
+  p224_felem_diff(ftmp, delta);
+  // ftmp[i] < 2^57 + 2^58 + 2 < 2^59
+  p224_felem_sum(ftmp2, delta);
+  // ftmp2[i] < 2^57 + 2^57 = 2^58
+  p224_felem_scalar(ftmp2, 3);
+  // ftmp2[i] < 3 * 2^58 < 2^60
+  p224_felem_mul(tmp, ftmp, ftmp2);
+  // tmp[i] < 2^60 * 2^59 * 4 = 2^121
+  p224_felem_reduce(alpha, tmp);
+
+  // x' = alpha^2 - 8*beta
+  p224_felem_square(tmp, alpha);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+  p224_felem_assign(ftmp, beta);
+  p224_felem_scalar(ftmp, 8);
+  // ftmp[i] < 8 * 2^57 = 2^60
+  p224_felem_diff_128_64(tmp, ftmp);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(x_out, tmp);
+
+  // z' = (y + z)^2 - gamma - delta
+  p224_felem_sum(delta, gamma);
+  // delta[i] < 2^57 + 2^57 = 2^58
+  p224_felem_assign(ftmp, y_in);
+  p224_felem_sum(ftmp, z_in);
+  // ftmp[i] < 2^57 + 2^57 = 2^58
+  p224_felem_square(tmp, ftmp);
+  // tmp[i] < 4 * 2^58 * 2^58 = 2^118
+  p224_felem_diff_128_64(tmp, delta);
+  // tmp[i] < 2^118 + 2^64 + 8 < 2^119
+  p224_felem_reduce(z_out, tmp);
+
+  // y' = alpha*(4*beta - x') - 8*gamma^2
+  p224_felem_scalar(beta, 4);
+  // beta[i] < 4 * 2^57 = 2^59
+  p224_felem_diff(beta, x_out);
+  // beta[i] < 2^59 + 2^58 + 2 < 2^60
+  p224_felem_mul(tmp, alpha, beta);
+  // tmp[i] < 4 * 2^57 * 2^60 = 2^119
+  p224_felem_square(tmp2, gamma);
+  // tmp2[i] < 4 * 2^57 * 2^57 = 2^116
+  p224_widefelem_scalar(tmp2, 8);
+  // tmp2[i] < 8 * 2^116 = 2^119
+  p224_widefelem_diff(tmp, tmp2);
+  // tmp[i] < 2^119 + 2^120 < 2^121
+  p224_felem_reduce(y_out, tmp);
+}
+
+// Add two elliptic curve points:
+// (X_1, Y_1, Z_1) + (X_2, Y_2, Z_2) = (X_3, Y_3, Z_3), where
+// X_3 = (Z_1^3 * Y_2 - Z_2^3 * Y_1)^2 - (Z_1^2 * X_2 - Z_2^2 * X_1)^3 -
+// 2 * Z_2^2 * X_1 * (Z_1^2 * X_2 - Z_2^2 * X_1)^2
+// Y_3 = (Z_1^3 * Y_2 - Z_2^3 * Y_1) * (Z_2^2 * X_1 * (Z_1^2 * X_2 - Z_2^2 *
+// X_1)^2 - X_3) -
+//        Z_2^3 * Y_1 * (Z_1^2 * X_2 - Z_2^2 * X_1)^3
+// Z_3 = (Z_1^2 * X_2 - Z_2^2 * X_1) * (Z_1 * Z_2)
+//
+// This runs faster if 'mixed' is set, which requires Z_2 = 1 or Z_2 = 0.
+
+// This function is not entirely constant-time: it includes a branch for
+// checking whether the two input points are equal, (while not equal to the
+// point at infinity). This case never happens during single point
+// multiplication, so there is no timing leak for ECDH or ECDSA signing.
+static void p224_point_add(p224_felem x3, p224_felem y3, p224_felem z3,
+                           const p224_felem x1, const p224_felem y1,
+                           const p224_felem z1, const int mixed,
+                           const p224_felem x2, const p224_felem y2,
+                           const p224_felem z2) {
+  p224_felem ftmp, ftmp2, ftmp3, ftmp4, ftmp5, x_out, y_out, z_out;
+  p224_widefelem tmp, tmp2;
+  p224_limb z1_is_zero, z2_is_zero, x_equal, y_equal;
+
+  if (!mixed) {
+    // ftmp2 = z2^2
+    p224_felem_square(tmp, z2);
+    p224_felem_reduce(ftmp2, tmp);
+
+    // ftmp4 = z2^3
+    p224_felem_mul(tmp, ftmp2, z2);
+    p224_felem_reduce(ftmp4, tmp);
+
+    // ftmp4 = z2^3*y1
+    p224_felem_mul(tmp2, ftmp4, y1);
+    p224_felem_reduce(ftmp4, tmp2);
+
+    // ftmp2 = z2^2*x1
+    p224_felem_mul(tmp2, ftmp2, x1);
+    p224_felem_reduce(ftmp2, tmp2);
+  } else {
+    // We'll assume z2 = 1 (special case z2 = 0 is handled later)
+
+    // ftmp4 = z2^3*y1
+    p224_felem_assign(ftmp4, y1);
+
+    // ftmp2 = z2^2*x1
+    p224_felem_assign(ftmp2, x1);
+  }
+
+  // ftmp = z1^2
+  p224_felem_square(tmp, z1);
+  p224_felem_reduce(ftmp, tmp);
+
+  // ftmp3 = z1^3
+  p224_felem_mul(tmp, ftmp, z1);
+  p224_felem_reduce(ftmp3, tmp);
+
+  // tmp = z1^3*y2
+  p224_felem_mul(tmp, ftmp3, y2);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // ftmp3 = z1^3*y2 - z2^3*y1
+  p224_felem_diff_128_64(tmp, ftmp4);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(ftmp3, tmp);
+
+  // tmp = z1^2*x2
+  p224_felem_mul(tmp, ftmp, x2);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // ftmp = z1^2*x2 - z2^2*x1
+  p224_felem_diff_128_64(tmp, ftmp2);
+  // tmp[i] < 2^116 + 2^64 + 8 < 2^117
+  p224_felem_reduce(ftmp, tmp);
+
+  // the formulae are incorrect if the points are equal
+  // so we check for this and do doubling if this happens
+  x_equal = p224_felem_is_zero(ftmp);
+  y_equal = p224_felem_is_zero(ftmp3);
+  z1_is_zero = p224_felem_is_zero(z1);
+  z2_is_zero = p224_felem_is_zero(z2);
+  // In affine coordinates, (X_1, Y_1) == (X_2, Y_2)
+  p224_limb is_nontrivial_double =
+      x_equal & y_equal & (1 - z1_is_zero) & (1 - z2_is_zero);
+  if (is_nontrivial_double) {
+    p224_point_double(x3, y3, z3, x1, y1, z1);
+    return;
+  }
+
+  // ftmp5 = z1*z2
+  if (!mixed) {
+    p224_felem_mul(tmp, z1, z2);
+    p224_felem_reduce(ftmp5, tmp);
+  } else {
+    // special case z2 = 0 is handled later
+    p224_felem_assign(ftmp5, z1);
+  }
+
+  // z_out = (z1^2*x2 - z2^2*x1)*(z1*z2)
+  p224_felem_mul(tmp, ftmp, ftmp5);
+  p224_felem_reduce(z_out, tmp);
+
+  // ftmp = (z1^2*x2 - z2^2*x1)^2
+  p224_felem_assign(ftmp5, ftmp);
+  p224_felem_square(tmp, ftmp);
+  p224_felem_reduce(ftmp, tmp);
+
+  // ftmp5 = (z1^2*x2 - z2^2*x1)^3
+  p224_felem_mul(tmp, ftmp, ftmp5);
+  p224_felem_reduce(ftmp5, tmp);
+
+  // ftmp2 = z2^2*x1*(z1^2*x2 - z2^2*x1)^2
+  p224_felem_mul(tmp, ftmp2, ftmp);
+  p224_felem_reduce(ftmp2, tmp);
+
+  // tmp = z2^3*y1*(z1^2*x2 - z2^2*x1)^3
+  p224_felem_mul(tmp, ftmp4, ftmp5);
+  // tmp[i] < 4 * 2^57 * 2^57 = 2^116
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)^2
+  p224_felem_square(tmp2, ftmp3);
+  // tmp2[i] < 4 * 2^57 * 2^57 < 2^116
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)^2 - (z1^2*x2 - z2^2*x1)^3
+  p224_felem_diff_128_64(tmp2, ftmp5);
+  // tmp2[i] < 2^116 + 2^64 + 8 < 2^117
+
+  // ftmp5 = 2*z2^2*x1*(z1^2*x2 - z2^2*x1)^2
+  p224_felem_assign(ftmp5, ftmp2);
+  p224_felem_scalar(ftmp5, 2);
+  // ftmp5[i] < 2 * 2^57 = 2^58
+
+  /* x_out = (z1^3*y2 - z2^3*y1)^2 - (z1^2*x2 - z2^2*x1)^3 -
+     2*z2^2*x1*(z1^2*x2 - z2^2*x1)^2 */
+  p224_felem_diff_128_64(tmp2, ftmp5);
+  // tmp2[i] < 2^117 + 2^64 + 8 < 2^118
+  p224_felem_reduce(x_out, tmp2);
+
+  // ftmp2 = z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out
+  p224_felem_diff(ftmp2, x_out);
+  // ftmp2[i] < 2^57 + 2^58 + 2 < 2^59
+
+  // tmp2 = (z1^3*y2 - z2^3*y1)*(z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out)
+  p224_felem_mul(tmp2, ftmp3, ftmp2);
+  // tmp2[i] < 4 * 2^57 * 2^59 = 2^118
+
+  /* y_out = (z1^3*y2 - z2^3*y1)*(z2^2*x1*(z1^2*x2 - z2^2*x1)^2 - x_out) -
+     z2^3*y1*(z1^2*x2 - z2^2*x1)^3 */
+  p224_widefelem_diff(tmp2, tmp);
+  // tmp2[i] < 2^118 + 2^120 < 2^121
+  p224_felem_reduce(y_out, tmp2);
+
+  // the result (x_out, y_out, z_out) is incorrect if one of the inputs is
+  // the point at infinity, so we need to check for this separately
+
+  // if point 1 is at infinity, copy point 2 to output, and vice versa
+  p224_copy_conditional(x_out, x2, z1_is_zero);
+  p224_copy_conditional(x_out, x1, z2_is_zero);
+  p224_copy_conditional(y_out, y2, z1_is_zero);
+  p224_copy_conditional(y_out, y1, z2_is_zero);
+  p224_copy_conditional(z_out, z2, z1_is_zero);
+  p224_copy_conditional(z_out, z1, z2_is_zero);
+  p224_felem_assign(x3, x_out);
+  p224_felem_assign(y3, y_out);
+  p224_felem_assign(z3, z_out);
+}
+
+// p224_select_point selects the |idx|th point from a precomputation table and
+// copies it to out.
+static void p224_select_point(const uint64_t idx, size_t size,
+                              const p224_felem pre_comp[/*size*/][3],
+                              p224_felem out[3]) {
+  p224_limb *outlimbs = &out[0][0];
+  OPENSSL_memset(outlimbs, 0, 3 * sizeof(p224_felem));
+
+  for (size_t i = 0; i < size; i++) {
+    const p224_limb *inlimbs = &pre_comp[i][0][0];
+    uint64_t mask = i ^ idx;
+    mask |= mask >> 4;
+    mask |= mask >> 2;
+    mask |= mask >> 1;
+    mask &= 1;
+    mask--;
+    for (size_t j = 0; j < 4 * 3; j++) {
+      outlimbs[j] |= inlimbs[j] & mask;
+    }
+  }
+}
+
+// p224_get_bit returns the |i|th bit in |in|
+static char p224_get_bit(const p224_felem_bytearray in, size_t i) {
+  if (i >= 224) {
+    return 0;
+  }
+  return (in[i >> 3] >> (i & 7)) & 1;
+}
+
+// Takes the Jacobian coordinates (X, Y, Z) of a point and returns
+// (X', Y') = (X/Z^2, Y/Z^3)
+static int ec_GFp_nistp224_point_get_affine_coordinates(
+    const EC_GROUP *group, const EC_RAW_POINT *point, EC_FELEM *x,
+    EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  p224_felem z1, z2;
+  p224_widefelem tmp;
+  p224_generic_to_felem(z1, &point->Z);
+  p224_felem_inv(z2, z1);
+  p224_felem_square(tmp, z2);
+  p224_felem_reduce(z1, tmp);
+
+  if (x != NULL) {
+    p224_felem x_in, x_out;
+    p224_generic_to_felem(x_in, &point->X);
+    p224_felem_mul(tmp, x_in, z1);
+    p224_felem_reduce(x_out, tmp);
+    p224_felem_to_generic(x, x_out);
+  }
+
+  if (y != NULL) {
+    p224_felem y_in, y_out;
+    p224_generic_to_felem(y_in, &point->Y);
+    p224_felem_mul(tmp, z1, z2);
+    p224_felem_reduce(z1, tmp);
+    p224_felem_mul(tmp, y_in, z1);
+    p224_felem_reduce(y_out, tmp);
+    p224_felem_to_generic(y, y_out);
+  }
+
+  return 1;
+}
+
+static void ec_GFp_nistp224_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  p224_felem x1, y1, z1, x2, y2, z2;
+  p224_generic_to_felem(x1, &a->X);
+  p224_generic_to_felem(y1, &a->Y);
+  p224_generic_to_felem(z1, &a->Z);
+  p224_generic_to_felem(x2, &b->X);
+  p224_generic_to_felem(y2, &b->Y);
+  p224_generic_to_felem(z2, &b->Z);
+  p224_point_add(x1, y1, z1, x1, y1, z1, 0 /* both Jacobian */, x2, y2, z2);
+  // The outputs are already reduced, but still need to be contracted.
+  p224_felem_to_generic(&r->X, x1);
+  p224_felem_to_generic(&r->Y, y1);
+  p224_felem_to_generic(&r->Z, z1);
+}
+
+static void ec_GFp_nistp224_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a) {
+  p224_felem x, y, z;
+  p224_generic_to_felem(x, &a->X);
+  p224_generic_to_felem(y, &a->Y);
+  p224_generic_to_felem(z, &a->Z);
+  p224_point_double(x, y, z, x, y, z);
+  // The outputs are already reduced, but still need to be contracted.
+  p224_felem_to_generic(&r->X, x);
+  p224_felem_to_generic(&r->Y, y);
+  p224_felem_to_generic(&r->Z, z);
+}
+
+static void ec_GFp_nistp224_make_precomp(p224_felem out[17][3],
+                                         const EC_RAW_POINT *p) {
+  OPENSSL_memset(out[0], 0, sizeof(p224_felem) * 3);
+
+  p224_generic_to_felem(out[1][0], &p->X);
+  p224_generic_to_felem(out[1][1], &p->Y);
+  p224_generic_to_felem(out[1][2], &p->Z);
+
+  for (size_t j = 2; j <= 16; ++j) {
+    if (j & 1) {
+      p224_point_add(out[j][0], out[j][1], out[j][2], out[1][0], out[1][1],
+                     out[1][2], 0, out[j - 1][0], out[j - 1][1], out[j - 1][2]);
+    } else {
+      p224_point_double(out[j][0], out[j][1], out[j][2], out[j / 2][0],
+                        out[j / 2][1], out[j / 2][2]);
+    }
+  }
+}
+
+static void ec_GFp_nistp224_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *scalar) {
+  p224_felem p_pre_comp[17][3];
+  ec_GFp_nistp224_make_precomp(p_pre_comp, p);
+
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[4];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 220; i < 221; i--) {
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // Add every 5 doublings.
+    if (i % 5 == 0) {
+      uint64_t bits = p224_get_bit(scalar->bytes, i + 4) << 5;
+      bits |= p224_get_bit(scalar->bytes, i + 3) << 4;
+      bits |= p224_get_bit(scalar->bytes, i + 2) << 3;
+      bits |= p224_get_bit(scalar->bytes, i + 1) << 2;
+      bits |= p224_get_bit(scalar->bytes, i) << 1;
+      bits |= p224_get_bit(scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // Select the point to add or subtract.
+      p224_select_point(digit, 17, (const p224_felem(*)[3])p_pre_comp, tmp);
+      p224_felem_neg(tmp[3], tmp[1]);  // (X, -Y, Z) is the negative point
+      p224_copy_conditional(tmp[1], tmp[3], sign);
+
+      if (!skip) {
+        p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                       tmp[0], tmp[1], tmp[2]);
+      } else {
+        OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+        skip = 0;
+      }
+    }
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_point_mul_base(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *scalar) {
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[3];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 27; i < 28; i--) {
+    // double
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // First, look 28 bits upwards.
+    uint64_t bits = p224_get_bit(scalar->bytes, i + 196) << 3;
+    bits |= p224_get_bit(scalar->bytes, i + 140) << 2;
+    bits |= p224_get_bit(scalar->bytes, i + 84) << 1;
+    bits |= p224_get_bit(scalar->bytes, i + 28);
+    // Select the point to add, in constant time.
+    p224_select_point(bits, 16, g_p224_pre_comp[1], tmp);
+
+    if (!skip) {
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     tmp[0], tmp[1], tmp[2]);
+    } else {
+      OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+      skip = 0;
+    }
+
+    // Second, look at the current position/
+    bits = p224_get_bit(scalar->bytes, i + 168) << 3;
+    bits |= p224_get_bit(scalar->bytes, i + 112) << 2;
+    bits |= p224_get_bit(scalar->bytes, i + 56) << 1;
+    bits |= p224_get_bit(scalar->bytes, i);
+    // Select the point to add, in constant time.
+    p224_select_point(bits, 16, g_p224_pre_comp[0], tmp);
+    p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                   tmp[0], tmp[1], tmp[2]);
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_point_mul_public(const EC_GROUP *group,
+                                             EC_RAW_POINT *r,
+                                             const EC_SCALAR *g_scalar,
+                                             const EC_RAW_POINT *p,
+                                             const EC_SCALAR *p_scalar) {
+  // TODO(davidben): If P-224 ECDSA verify performance ever matters, using
+  // |ec_compute_wNAF| for |p_scalar| would likely be an easy improvement.
+  p224_felem p_pre_comp[17][3];
+  ec_GFp_nistp224_make_precomp(p_pre_comp, p);
+
+  // Set nq to the point at infinity.
+  p224_felem nq[3], tmp[3];
+  OPENSSL_memset(nq, 0, 3 * sizeof(p224_felem));
+
+  // Loop over both scalars msb-to-lsb, interleaving additions of multiples of
+  // the generator (two in each of the last 28 rounds) and additions of p (every
+  // 5th round).
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 220; i < 221; i--) {
+    if (!skip) {
+      p224_point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // Add multiples of the generator.
+    if (i <= 27) {
+      // First, look 28 bits upwards.
+      uint64_t bits = p224_get_bit(g_scalar->bytes, i + 196) << 3;
+      bits |= p224_get_bit(g_scalar->bytes, i + 140) << 2;
+      bits |= p224_get_bit(g_scalar->bytes, i + 84) << 1;
+      bits |= p224_get_bit(g_scalar->bytes, i + 28);
+
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     g_p224_pre_comp[1][bits][0], g_p224_pre_comp[1][bits][1],
+                     g_p224_pre_comp[1][bits][2]);
+      assert(!skip);
+
+      // Second, look at the current position.
+      bits = p224_get_bit(g_scalar->bytes, i + 168) << 3;
+      bits |= p224_get_bit(g_scalar->bytes, i + 112) << 2;
+      bits |= p224_get_bit(g_scalar->bytes, i + 56) << 1;
+      bits |= p224_get_bit(g_scalar->bytes, i);
+      p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */,
+                     g_p224_pre_comp[0][bits][0], g_p224_pre_comp[0][bits][1],
+                     g_p224_pre_comp[0][bits][2]);
+    }
+
+    // Incorporate |p_scalar| every 5 doublings.
+    if (i % 5 == 0) {
+      uint64_t bits = p224_get_bit(p_scalar->bytes, i + 4) << 5;
+      bits |= p224_get_bit(p_scalar->bytes, i + 3) << 4;
+      bits |= p224_get_bit(p_scalar->bytes, i + 2) << 3;
+      bits |= p224_get_bit(p_scalar->bytes, i + 1) << 2;
+      bits |= p224_get_bit(p_scalar->bytes, i) << 1;
+      bits |= p224_get_bit(p_scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // Select the point to add or subtract.
+      OPENSSL_memcpy(tmp, p_pre_comp[digit], 3 * sizeof(p224_felem));
+      if (sign) {
+        p224_felem_neg(tmp[1], tmp[1]);  // (X, -Y, Z) is the negative point
+      }
+
+      if (!skip) {
+        p224_point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                       tmp[0], tmp[1], tmp[2]);
+      } else {
+        OPENSSL_memcpy(nq, tmp, 3 * sizeof(p224_felem));
+        skip = 0;
+      }
+    }
+  }
+
+  // Reduce the output to its unique minimal representation.
+  p224_felem_to_generic(&r->X, nq[0]);
+  p224_felem_to_generic(&r->Y, nq[1]);
+  p224_felem_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp224_felem_mul(const EC_GROUP *group, EC_FELEM *r,
+                                      const EC_FELEM *a, const EC_FELEM *b) {
+  p224_felem felem1, felem2;
+  p224_widefelem wide;
+  p224_generic_to_felem(felem1, a);
+  p224_generic_to_felem(felem2, b);
+  p224_felem_mul(wide, felem1, felem2);
+  p224_felem_reduce(felem1, wide);
+  p224_felem_to_generic(r, felem1);
+}
+
+static void ec_GFp_nistp224_felem_sqr(const EC_GROUP *group, EC_FELEM *r,
+                                      const EC_FELEM *a) {
+  p224_felem felem;
+  p224_generic_to_felem(felem, a);
+  p224_widefelem wide;
+  p224_felem_square(wide, felem);
+  p224_felem_reduce(felem, wide);
+  p224_felem_to_generic(r, felem);
+}
+
+static int ec_GFp_nistp224_bignum_to_felem(const EC_GROUP *group, EC_FELEM *out,
+                                           const BIGNUM *in) {
+  return bn_copy_words(out->words, group->field.width, in);
+}
+
+static int ec_GFp_nistp224_felem_to_bignum(const EC_GROUP *group, BIGNUM *out,
+                                           const EC_FELEM *in) {
+  return bn_set_words(out, in->words, group->field.width);
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistp224_method) {
+  out->group_init = ec_GFp_simple_group_init;
+  out->group_finish = ec_GFp_simple_group_finish;
+  out->group_set_curve = ec_GFp_simple_group_set_curve;
+  out->point_get_affine_coordinates =
+      ec_GFp_nistp224_point_get_affine_coordinates;
+  out->add = ec_GFp_nistp224_add;
+  out->dbl = ec_GFp_nistp224_dbl;
+  out->mul = ec_GFp_nistp224_point_mul;
+  out->mul_base = ec_GFp_nistp224_point_mul_base;
+  out->mul_public = ec_GFp_nistp224_point_mul_public;
+  out->felem_mul = ec_GFp_nistp224_felem_mul;
+  out->felem_sqr = ec_GFp_nistp224_felem_sqr;
+  out->bignum_to_felem = ec_GFp_nistp224_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_nistp224_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_simple_cmp_x_coordinate;
+}
+
+#endif  // BORINGSSL_HAS_UINT128 && !SMALL
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h
new file mode 100644
index 0000000..8246b11
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h	
@@ -0,0 +1,9501 @@
+/* Copyright (c) 2015, Intel Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This is the precomputed constant time access table for the code in
+// p256-x86_64.c, for the default generator. The table consists of 37
+// subtables, each subtable contains 64 affine points. The affine points are
+// encoded as eight uint64's, four for the x coordinate and four for the y.
+// Both values are in little-endian order. There are 37 tables because a
+// signed, 6-bit wNAF form of the scalar is used and ceil(256/(6 + 1)) = 37.
+// Within each table there are 64 values because the 6-bit wNAF value can take
+// 64 values, ignoring the sign bit, which is implemented by performing a
+// negation of the affine point when required. We would like to align it to 2MB
+// in order to increase the chances of using a large page but that appears to
+// lead to invalid ELF files being produced.
+
+// This file is generated by make_p256-x86_64-table.go.
+
+static const alignas(4096) PRECOMP256_ROW ecp_nistz256_precomputed[37] = {
+        {{{TOBN(0x79e730d4, 0x18a9143c), TOBN(0x75ba95fc, 0x5fedb601),
+           TOBN(0x79fb732b, 0x77622510), TOBN(0x18905f76, 0xa53755c6)},
+          {TOBN(0xddf25357, 0xce95560a), TOBN(0x8b4ab8e4, 0xba19e45c),
+           TOBN(0xd2e88688, 0xdd21f325), TOBN(0x8571ff18, 0x25885d85)}},
+         {{TOBN(0x850046d4, 0x10ddd64d), TOBN(0xaa6ae3c1, 0xa433827d),
+           TOBN(0x73220503, 0x8d1490d9), TOBN(0xf6bb32e4, 0x3dcf3a3b)},
+          {TOBN(0x2f3648d3, 0x61bee1a5), TOBN(0x152cd7cb, 0xeb236ff8),
+           TOBN(0x19a8fb0e, 0x92042dbe), TOBN(0x78c57751, 0x0a5b8a3b)}},
+         {{TOBN(0xffac3f90, 0x4eebc127), TOBN(0xb027f84a, 0x087d81fb),
+           TOBN(0x66ad77dd, 0x87cbbc98), TOBN(0x26936a3f, 0xb6ff747e)},
+          {TOBN(0xb04c5c1f, 0xc983a7eb), TOBN(0x583e47ad, 0x0861fe1a),
+           TOBN(0x78820831, 0x1a2ee98e), TOBN(0xd5f06a29, 0xe587cc07)}},
+         {{TOBN(0x74b0b50d, 0x46918dcc), TOBN(0x4650a6ed, 0xc623c173),
+           TOBN(0x0cdaacac, 0xe8100af2), TOBN(0x577362f5, 0x41b0176b)},
+          {TOBN(0x2d96f24c, 0xe4cbaba6), TOBN(0x17628471, 0xfad6f447),
+           TOBN(0x6b6c36de, 0xe5ddd22e), TOBN(0x84b14c39, 0x4c5ab863)}},
+         {{TOBN(0xbe1b8aae, 0xc45c61f5), TOBN(0x90ec649a, 0x94b9537d),
+           TOBN(0x941cb5aa, 0xd076c20c), TOBN(0xc9079605, 0x890523c8)},
+          {TOBN(0xeb309b4a, 0xe7ba4f10), TOBN(0x73c568ef, 0xe5eb882b),
+           TOBN(0x3540a987, 0x7e7a1f68), TOBN(0x73a076bb, 0x2dd1e916)}},
+         {{TOBN(0x40394737, 0x3e77664a), TOBN(0x55ae744f, 0x346cee3e),
+           TOBN(0xd50a961a, 0x5b17a3ad), TOBN(0x13074b59, 0x54213673)},
+          {TOBN(0x93d36220, 0xd377e44b), TOBN(0x299c2b53, 0xadff14b5),
+           TOBN(0xf424d44c, 0xef639f11), TOBN(0xa4c9916d, 0x4a07f75f)}},
+         {{TOBN(0x0746354e, 0xa0173b4f), TOBN(0x2bd20213, 0xd23c00f7),
+           TOBN(0xf43eaab5, 0x0c23bb08), TOBN(0x13ba5119, 0xc3123e03)},
+          {TOBN(0x2847d030, 0x3f5b9d4d), TOBN(0x6742f2f2, 0x5da67bdd),
+           TOBN(0xef933bdc, 0x77c94195), TOBN(0xeaedd915, 0x6e240867)}},
+         {{TOBN(0x27f14cd1, 0x9499a78f), TOBN(0x462ab5c5, 0x6f9b3455),
+           TOBN(0x8f90f02a, 0xf02cfc6b), TOBN(0xb763891e, 0xb265230d)},
+          {TOBN(0xf59da3a9, 0x532d4977), TOBN(0x21e3327d, 0xcf9eba15),
+           TOBN(0x123c7b84, 0xbe60bbf0), TOBN(0x56ec12f2, 0x7706df76)}},
+         {{TOBN(0x75c96e8f, 0x264e20e8), TOBN(0xabe6bfed, 0x59a7a841),
+           TOBN(0x2cc09c04, 0x44c8eb00), TOBN(0xe05b3080, 0xf0c4e16b)},
+          {TOBN(0x1eb7777a, 0xa45f3314), TOBN(0x56af7bed, 0xce5d45e3),
+           TOBN(0x2b6e019a, 0x88b12f1a), TOBN(0x086659cd, 0xfd835f9b)}},
+         {{TOBN(0x2c18dbd1, 0x9dc21ec8), TOBN(0x98f9868a, 0x0fcf8139),
+           TOBN(0x737d2cd6, 0x48250b49), TOBN(0xcc61c947, 0x24b3428f)},
+          {TOBN(0x0c2b4078, 0x80dd9e76), TOBN(0xc43a8991, 0x383fbe08),
+           TOBN(0x5f7d2d65, 0x779be5d2), TOBN(0x78719a54, 0xeb3b4ab5)}},
+         {{TOBN(0xea7d260a, 0x6245e404), TOBN(0x9de40795, 0x6e7fdfe0),
+           TOBN(0x1ff3a415, 0x8dac1ab5), TOBN(0x3e7090f1, 0x649c9073)},
+          {TOBN(0x1a768561, 0x2b944e88), TOBN(0x250f939e, 0xe57f61c8),
+           TOBN(0x0c0daa89, 0x1ead643d), TOBN(0x68930023, 0xe125b88e)}},
+         {{TOBN(0x04b71aa7, 0xd2697768), TOBN(0xabdedef5, 0xca345a33),
+           TOBN(0x2409d29d, 0xee37385e), TOBN(0x4ee1df77, 0xcb83e156)},
+          {TOBN(0x0cac12d9, 0x1cbb5b43), TOBN(0x170ed2f6, 0xca895637),
+           TOBN(0x28228cfa, 0x8ade6d66), TOBN(0x7ff57c95, 0x53238aca)}},
+         {{TOBN(0xccc42563, 0x4b2ed709), TOBN(0x0e356769, 0x856fd30d),
+           TOBN(0xbcbcd43f, 0x559e9811), TOBN(0x738477ac, 0x5395b759)},
+          {TOBN(0x35752b90, 0xc00ee17f), TOBN(0x68748390, 0x742ed2e3),
+           TOBN(0x7cd06422, 0xbd1f5bc1), TOBN(0xfbc08769, 0xc9e7b797)}},
+         {{TOBN(0xa242a35b, 0xb0cf664a), TOBN(0x126e48f7, 0x7f9707e3),
+           TOBN(0x1717bf54, 0xc6832660), TOBN(0xfaae7332, 0xfd12c72e)},
+          {TOBN(0x27b52db7, 0x995d586b), TOBN(0xbe29569e, 0x832237c2),
+           TOBN(0xe8e4193e, 0x2a65e7db), TOBN(0x152706dc, 0x2eaa1bbb)}},
+         {{TOBN(0x72bcd8b7, 0xbc60055b), TOBN(0x03cc23ee, 0x56e27e4b),
+           TOBN(0xee337424, 0xe4819370), TOBN(0xe2aa0e43, 0x0ad3da09)},
+          {TOBN(0x40b8524f, 0x6383c45d), TOBN(0xd7663554, 0x42a41b25),
+           TOBN(0x64efa6de, 0x778a4797), TOBN(0x2042170a, 0x7079adf4)}},
+         {{TOBN(0x808b0b65, 0x0bc6fb80), TOBN(0x5882e075, 0x3ffe2e6b),
+           TOBN(0xd5ef2f7c, 0x2c83f549), TOBN(0x54d63c80, 0x9103b723)},
+          {TOBN(0xf2f11bd6, 0x52a23f9b), TOBN(0x3670c319, 0x4b0b6587),
+           TOBN(0x55c4623b, 0xb1580e9e), TOBN(0x64edf7b2, 0x01efe220)}},
+         {{TOBN(0x97091dcb, 0xd53c5c9d), TOBN(0xf17624b6, 0xac0a177b),
+           TOBN(0xb0f13975, 0x2cfe2dff), TOBN(0xc1a35c0a, 0x6c7a574e)},
+          {TOBN(0x227d3146, 0x93e79987), TOBN(0x0575bf30, 0xe89cb80e),
+           TOBN(0x2f4e247f, 0x0d1883bb), TOBN(0xebd51226, 0x3274c3d0)}},
+         {{TOBN(0x5f3e51c8, 0x56ada97a), TOBN(0x4afc964d, 0x8f8b403e),
+           TOBN(0xa6f247ab, 0x412e2979), TOBN(0x675abd1b, 0x6f80ebda)},
+          {TOBN(0x66a2bd72, 0x5e485a1d), TOBN(0x4b2a5caf, 0x8f4f0b3c),
+           TOBN(0x2626927f, 0x1b847bba), TOBN(0x6c6fc7d9, 0x0502394d)}},
+         {{TOBN(0xfea912ba, 0xa5659ae8), TOBN(0x68363aba, 0x25e1a16e),
+           TOBN(0xb8842277, 0x752c41ac), TOBN(0xfe545c28, 0x2897c3fc)},
+          {TOBN(0x2d36e9e7, 0xdc4c696b), TOBN(0x5806244a, 0xfba977c5),
+           TOBN(0x85665e9b, 0xe39508c1), TOBN(0xf720ee25, 0x6d12597b)}},
+         {{TOBN(0x8a979129, 0xd2337a31), TOBN(0x5916868f, 0x0f862bdc),
+           TOBN(0x048099d9, 0x5dd283ba), TOBN(0xe2d1eeb6, 0xfe5bfb4e)},
+          {TOBN(0x82ef1c41, 0x7884005d), TOBN(0xa2d4ec17, 0xffffcbae),
+           TOBN(0x9161c53f, 0x8aa95e66), TOBN(0x5ee104e1, 0xc5fee0d0)}},
+         {{TOBN(0x562e4cec, 0xc135b208), TOBN(0x74e1b265, 0x4783f47d),
+           TOBN(0x6d2a506c, 0x5a3f3b30), TOBN(0xecead9f4, 0xc16762fc)},
+          {TOBN(0xf29dd4b2, 0xe286e5b9), TOBN(0x1b0fadc0, 0x83bb3c61),
+           TOBN(0x7a75023e, 0x7fac29a4), TOBN(0xc086d5f1, 0xc9477fa3)}},
+         {{TOBN(0x0fc61135, 0x2f6f3076), TOBN(0xc99ffa23, 0xe3912a9a),
+           TOBN(0x6a0b0685, 0xd2f8ba3d), TOBN(0xfdc777e8, 0xe93358a4)},
+          {TOBN(0x94a787bb, 0x35415f04), TOBN(0x640c2d6a, 0x4d23fea4),
+           TOBN(0x9de917da, 0x153a35b5), TOBN(0x793e8d07, 0x5d5cd074)}},
+         {{TOBN(0xf4f87653, 0x2de45068), TOBN(0x37c7a7e8, 0x9e2e1f6e),
+           TOBN(0xd0825fa2, 0xa3584069), TOBN(0xaf2cea7c, 0x1727bf42)},
+          {TOBN(0x0360a4fb, 0x9e4785a9), TOBN(0xe5fda49c, 0x27299f4a),
+           TOBN(0x48068e13, 0x71ac2f71), TOBN(0x83d0687b, 0x9077666f)}},
+         {{TOBN(0x6d3883b2, 0x15d02819), TOBN(0x6d0d7550, 0x40dd9a35),
+           TOBN(0x61d7cbf9, 0x1d2b469f), TOBN(0xf97b232f, 0x2efc3115)},
+          {TOBN(0xa551d750, 0xb24bcbc7), TOBN(0x11ea4949, 0x88a1e356),
+           TOBN(0x7669f031, 0x93cb7501), TOBN(0x595dc55e, 0xca737b8a)}},
+         {{TOBN(0xa4a319ac, 0xd837879f), TOBN(0x6fc1b49e, 0xed6b67b0),
+           TOBN(0xe3959933, 0x32f1f3af), TOBN(0x966742eb, 0x65432a2e)},
+          {TOBN(0x4b8dc9fe, 0xb4966228), TOBN(0x96cc6312, 0x43f43950),
+           TOBN(0x12068859, 0xc9b731ee), TOBN(0x7b948dc3, 0x56f79968)}},
+         {{TOBN(0x61e4ad32, 0xed1f8008), TOBN(0xe6c9267a, 0xd8b17538),
+           TOBN(0x1ac7c5eb, 0x857ff6fb), TOBN(0x994baaa8, 0x55f2fb10)},
+          {TOBN(0x84cf14e1, 0x1d248018), TOBN(0x5a39898b, 0x628ac508),
+           TOBN(0x14fde97b, 0x5fa944f5), TOBN(0xed178030, 0xd12e5ac7)}},
+         {{TOBN(0x042c2af4, 0x97e2feb4), TOBN(0xd36a42d7, 0xaebf7313),
+           TOBN(0x49d2c9eb, 0x084ffdd7), TOBN(0x9f8aa54b, 0x2ef7c76a)},
+          {TOBN(0x9200b7ba, 0x09895e70), TOBN(0x3bd0c66f, 0xddb7fb58),
+           TOBN(0x2d97d108, 0x78eb4cbb), TOBN(0x2d431068, 0xd84bde31)}},
+         {{TOBN(0x4b523eb7, 0x172ccd1f), TOBN(0x7323cb28, 0x30a6a892),
+           TOBN(0x97082ec0, 0xcfe153eb), TOBN(0xe97f6b6a, 0xf2aadb97)},
+          {TOBN(0x1d3d393e, 0xd1a83da1), TOBN(0xa6a7f9c7, 0x804b2a68),
+           TOBN(0x4a688b48, 0x2d0cb71e), TOBN(0xa9b4cc5f, 0x40585278)}},
+         {{TOBN(0x5e5db46a, 0xcb66e132), TOBN(0xf1be963a, 0x0d925880),
+           TOBN(0x944a7027, 0x0317b9e2), TOBN(0xe266f959, 0x48603d48)},
+          {TOBN(0x98db6673, 0x5c208899), TOBN(0x90472447, 0xa2fb18a3),
+           TOBN(0x8a966939, 0x777c619f), TOBN(0x3798142a, 0x2a3be21b)}},
+         {{TOBN(0xb4241cb1, 0x3298b343), TOBN(0xa3a14e49, 0xb44f65a1),
+           TOBN(0xc5f4d6cd, 0x3ac77acd), TOBN(0xd0288cb5, 0x52b6fc3c)},
+          {TOBN(0xd5cc8c2f, 0x1c040abc), TOBN(0xb675511e, 0x06bf9b4a),
+           TOBN(0xd667da37, 0x9b3aa441), TOBN(0x460d45ce, 0x51601f72)}},
+         {{TOBN(0xe2f73c69, 0x6755ff89), TOBN(0xdd3cf7e7, 0x473017e6),
+           TOBN(0x8ef5689d, 0x3cf7600d), TOBN(0x948dc4f8, 0xb1fc87b4)},
+          {TOBN(0xd9e9fe81, 0x4ea53299), TOBN(0x2d921ca2, 0x98eb6028),
+           TOBN(0xfaecedfd, 0x0c9803fc), TOBN(0xf38ae891, 0x4d7b4745)}},
+         {{TOBN(0xd8c5fccf, 0xc5e3a3d8), TOBN(0xbefd904c, 0x4079dfbf),
+           TOBN(0xbc6d6a58, 0xfead0197), TOBN(0x39227077, 0x695532a4)},
+          {TOBN(0x09e23e6d, 0xdbef42f5), TOBN(0x7e449b64, 0x480a9908),
+           TOBN(0x7b969c1a, 0xad9a2e40), TOBN(0x6231d792, 0x9591c2a4)}},
+         {{TOBN(0x87151456, 0x0f664534), TOBN(0x85ceae7c, 0x4b68f103),
+           TOBN(0xac09c4ae, 0x65578ab9), TOBN(0x33ec6868, 0xf044b10c)},
+          {TOBN(0x6ac4832b, 0x3a8ec1f1), TOBN(0x5509d128, 0x5847d5ef),
+           TOBN(0xf909604f, 0x763f1574), TOBN(0xb16c4303, 0xc32f63c4)}},
+         {{TOBN(0xb6ab2014, 0x7ca23cd3), TOBN(0xcaa7a5c6, 0xa391849d),
+           TOBN(0x5b0673a3, 0x75678d94), TOBN(0xc982ddd4, 0xdd303e64)},
+          {TOBN(0xfd7b000b, 0x5db6f971), TOBN(0xbba2cb1f, 0x6f876f92),
+           TOBN(0xc77332a3, 0x3c569426), TOBN(0xa159100c, 0x570d74f8)}},
+         {{TOBN(0xfd16847f, 0xdec67ef5), TOBN(0x742ee464, 0x233e76b7),
+           TOBN(0x0b8e4134, 0xefc2b4c8), TOBN(0xca640b86, 0x42a3e521)},
+          {TOBN(0x653a0190, 0x8ceb6aa9), TOBN(0x313c300c, 0x547852d5),
+           TOBN(0x24e4ab12, 0x6b237af7), TOBN(0x2ba90162, 0x8bb47af8)}},
+         {{TOBN(0x3d5e58d6, 0xa8219bb7), TOBN(0xc691d0bd, 0x1b06c57f),
+           TOBN(0x0ae4cb10, 0xd257576e), TOBN(0x3569656c, 0xd54a3dc3)},
+          {TOBN(0xe5ebaebd, 0x94cda03a), TOBN(0x934e82d3, 0x162bfe13),
+           TOBN(0x450ac0ba, 0xe251a0c6), TOBN(0x480b9e11, 0xdd6da526)}},
+         {{TOBN(0x00467bc5, 0x8cce08b5), TOBN(0xb636458c, 0x7f178d55),
+           TOBN(0xc5748bae, 0xa677d806), TOBN(0x2763a387, 0xdfa394eb)},
+          {TOBN(0xa12b448a, 0x7d3cebb6), TOBN(0xe7adda3e, 0x6f20d850),
+           TOBN(0xf63ebce5, 0x1558462c), TOBN(0x58b36143, 0x620088a8)}},
+         {{TOBN(0x8a2cc3ca, 0x4d63c0ee), TOBN(0x51233117, 0x0fe948ce),
+           TOBN(0x7463fd85, 0x222ef33b), TOBN(0xadf0c7dc, 0x7c603d6c)},
+          {TOBN(0x0ec32d3b, 0xfe7765e5), TOBN(0xccaab359, 0xbf380409),
+           TOBN(0xbdaa84d6, 0x8e59319c), TOBN(0xd9a4c280, 0x9c80c34d)}},
+         {{TOBN(0xa9d89488, 0xa059c142), TOBN(0x6f5ae714, 0xff0b9346),
+           TOBN(0x068f237d, 0x16fb3664), TOBN(0x5853e4c4, 0x363186ac)},
+          {TOBN(0xe2d87d23, 0x63c52f98), TOBN(0x2ec4a766, 0x81828876),
+           TOBN(0x47b864fa, 0xe14e7b1c), TOBN(0x0c0bc0e5, 0x69192408)}},
+         {{TOBN(0xe4d7681d, 0xb82e9f3e), TOBN(0x83200f0b, 0xdf25e13c),
+           TOBN(0x8909984c, 0x66f27280), TOBN(0x462d7b00, 0x75f73227)},
+          {TOBN(0xd90ba188, 0xf2651798), TOBN(0x74c6e18c, 0x36ab1c34),
+           TOBN(0xab256ea3, 0x5ef54359), TOBN(0x03466612, 0xd1aa702f)}},
+         {{TOBN(0x624d6049, 0x2ed22e91), TOBN(0x6fdfe0b5, 0x6f072822),
+           TOBN(0xeeca1115, 0x39ce2271), TOBN(0x98100a4f, 0xdb01614f)},
+          {TOBN(0xb6b0daa2, 0xa35c628f), TOBN(0xb6f94d2e, 0xc87e9a47),
+           TOBN(0xc6773259, 0x1d57d9ce), TOBN(0xf70bfeec, 0x03884a7b)}},
+         {{TOBN(0x5fb35ccf, 0xed2bad01), TOBN(0xa155cbe3, 0x1da6a5c7),
+           TOBN(0xc2e2594c, 0x30a92f8f), TOBN(0x649c89ce, 0x5bfafe43)},
+          {TOBN(0xd158667d, 0xe9ff257a), TOBN(0x9b359611, 0xf32c50ae),
+           TOBN(0x4b00b20b, 0x906014cf), TOBN(0xf3a8cfe3, 0x89bc7d3d)}},
+         {{TOBN(0x4ff23ffd, 0x248a7d06), TOBN(0x80c5bfb4, 0x878873fa),
+           TOBN(0xb7d9ad90, 0x05745981), TOBN(0x179c85db, 0x3db01994)},
+          {TOBN(0xba41b062, 0x61a6966c), TOBN(0x4d82d052, 0xeadce5a8),
+           TOBN(0x9e91cd3b, 0xa5e6a318), TOBN(0x47795f4f, 0x95b2dda0)}},
+         {{TOBN(0xecfd7c1f, 0xd55a897c), TOBN(0x009194ab, 0xb29110fb),
+           TOBN(0x5f0e2046, 0xe381d3b0), TOBN(0x5f3425f6, 0xa98dd291)},
+          {TOBN(0xbfa06687, 0x730d50da), TOBN(0x0423446c, 0x4b083b7f),
+           TOBN(0x397a247d, 0xd69d3417), TOBN(0xeb629f90, 0x387ba42a)}},
+         {{TOBN(0x1ee426cc, 0xd5cd79bf), TOBN(0x0032940b, 0x946c6e18),
+           TOBN(0x1b1e8ae0, 0x57477f58), TOBN(0xe94f7d34, 0x6d823278)},
+          {TOBN(0xc747cb96, 0x782ba21a), TOBN(0xc5254469, 0xf72b33a5),
+           TOBN(0x772ef6de, 0xc7f80c81), TOBN(0xd73acbfe, 0x2cd9e6b5)}},
+         {{TOBN(0x4075b5b1, 0x49ee90d9), TOBN(0x785c339a, 0xa06e9eba),
+           TOBN(0xa1030d5b, 0xabf825e0), TOBN(0xcec684c3, 0xa42931dc)},
+          {TOBN(0x42ab62c9, 0xc1586e63), TOBN(0x45431d66, 0x5ab43f2b),
+           TOBN(0x57c8b2c0, 0x55f7835d), TOBN(0x033da338, 0xc1b7f865)}},
+         {{TOBN(0x283c7513, 0xcaa76097), TOBN(0x0a624fa9, 0x36c83906),
+           TOBN(0x6b20afec, 0x715af2c7), TOBN(0x4b969974, 0xeba78bfd)},
+          {TOBN(0x220755cc, 0xd921d60e), TOBN(0x9b944e10, 0x7baeca13),
+           TOBN(0x04819d51, 0x5ded93d4), TOBN(0x9bbff86e, 0x6dddfd27)}},
+         {{TOBN(0x6b344130, 0x77adc612), TOBN(0xa7496529, 0xbbd803a0),
+           TOBN(0x1a1baaa7, 0x6d8805bd), TOBN(0xc8403902, 0x470343ad)},
+          {TOBN(0x39f59f66, 0x175adff1), TOBN(0x0b26d7fb, 0xb7d8c5b7),
+           TOBN(0xa875f5ce, 0x529d75e3), TOBN(0x85efc7e9, 0x41325cc2)}},
+         {{TOBN(0x21950b42, 0x1ff6acd3), TOBN(0xffe70484, 0x53dc6909),
+           TOBN(0xff4cd0b2, 0x28766127), TOBN(0xabdbe608, 0x4fb7db2b)},
+          {TOBN(0x837c9228, 0x5e1109e8), TOBN(0x26147d27, 0xf4645b5a),
+           TOBN(0x4d78f592, 0xf7818ed8), TOBN(0xd394077e, 0xf247fa36)}},
+         {{TOBN(0x0fb9c2d0, 0x488c171a), TOBN(0xa78bfbaa, 0x13685278),
+           TOBN(0xedfbe268, 0xd5b1fa6a), TOBN(0x0dceb8db, 0x2b7eaba7)},
+          {TOBN(0xbf9e8089, 0x9ae2b710), TOBN(0xefde7ae6, 0xa4449c96),
+           TOBN(0x43b7716b, 0xcc143a46), TOBN(0xd7d34194, 0xc3628c13)}},
+         {{TOBN(0x508cec1c, 0x3b3f64c9), TOBN(0xe20bc0ba, 0x1e5edf3f),
+           TOBN(0xda1deb85, 0x2f4318d4), TOBN(0xd20ebe0d, 0x5c3fa443)},
+          {TOBN(0x370b4ea7, 0x73241ea3), TOBN(0x61f1511c, 0x5e1a5f65),
+           TOBN(0x99a5e23d, 0x82681c62), TOBN(0xd731e383, 0xa2f54c2d)}},
+         {{TOBN(0x2692f36e, 0x83445904), TOBN(0x2e0ec469, 0xaf45f9c0),
+           TOBN(0x905a3201, 0xc67528b7), TOBN(0x88f77f34, 0xd0e5e542)},
+          {TOBN(0xf67a8d29, 0x5864687c), TOBN(0x23b92eae, 0x22df3562),
+           TOBN(0x5c27014b, 0x9bbec39e), TOBN(0x7ef2f226, 0x9c0f0f8d)}},
+         {{TOBN(0x97359638, 0x546c4d8d), TOBN(0x5f9c3fc4, 0x92f24679),
+           TOBN(0x912e8bed, 0xa8c8acd9), TOBN(0xec3a318d, 0x306634b0)},
+          {TOBN(0x80167f41, 0xc31cb264), TOBN(0x3db82f6f, 0x522113f2),
+           TOBN(0xb155bcd2, 0xdcafe197), TOBN(0xfba1da59, 0x43465283)}},
+         {{TOBN(0xa0425b8e, 0xb212cf53), TOBN(0x4f2e512e, 0xf8557c5f),
+           TOBN(0xc1286ff9, 0x25c4d56c), TOBN(0xbb8a0fea, 0xee26c851)},
+          {TOBN(0xc28f70d2, 0xe7d6107e), TOBN(0x7ee0c444, 0xe76265aa),
+           TOBN(0x3df277a4, 0x1d1936b1), TOBN(0x1a556e3f, 0xea9595eb)}},
+         {{TOBN(0x258bbbf9, 0xe7305683), TOBN(0x31eea5bf, 0x07ef5be6),
+           TOBN(0x0deb0e4a, 0x46c814c1), TOBN(0x5cee8449, 0xa7b730dd)},
+          {TOBN(0xeab495c5, 0xa0182bde), TOBN(0xee759f87, 0x9e27a6b4),
+           TOBN(0xc2cf6a68, 0x80e518ca), TOBN(0x25e8013f, 0xf14cf3f4)}},
+         {{TOBN(0x8fc44140, 0x7e8d7a14), TOBN(0xbb1ff3ca, 0x9556f36a),
+           TOBN(0x6a844385, 0x14600044), TOBN(0xba3f0c4a, 0x7451ae63)},
+          {TOBN(0xdfcac25b, 0x1f9af32a), TOBN(0x01e0db86, 0xb1f2214b),
+           TOBN(0x4e9a5bc2, 0xa4b596ac), TOBN(0x83927681, 0x026c2c08)}},
+         {{TOBN(0x3ec832e7, 0x7acaca28), TOBN(0x1bfeea57, 0xc7385b29),
+           TOBN(0x068212e3, 0xfd1eaf38), TOBN(0xc1329830, 0x6acf8ccc)},
+          {TOBN(0xb909f2db, 0x2aac9e59), TOBN(0x5748060d, 0xb661782a),
+           TOBN(0xc5ab2632, 0xc79b7a01), TOBN(0xda44c6c6, 0x00017626)}},
+         {{TOBN(0xf26c00e8, 0xa7ea82f0), TOBN(0x99cac80d, 0xe4299aaf),
+           TOBN(0xd66fe3b6, 0x7ed78be1), TOBN(0x305f725f, 0x648d02cd)},
+          {TOBN(0x33ed1bc4, 0x623fb21b), TOBN(0xfa70533e, 0x7a6319ad),
+           TOBN(0x17ab562d, 0xbe5ffb3e), TOBN(0x06374994, 0x56674741)}},
+         {{TOBN(0x69d44ed6, 0x5c46aa8e), TOBN(0x2100d5d3, 0xa8d063d1),
+           TOBN(0xcb9727ea, 0xa2d17c36), TOBN(0x4c2bab1b, 0x8add53b7)},
+          {TOBN(0xa084e90c, 0x15426704), TOBN(0x778afcd3, 0xa837ebea),
+           TOBN(0x6651f701, 0x7ce477f8), TOBN(0xa0624998, 0x46fb7a8b)}},
+         {{TOBN(0xdc1e6828, 0xed8a6e19), TOBN(0x33fc2336, 0x4189d9c7),
+           TOBN(0x026f8fe2, 0x671c39bc), TOBN(0xd40c4ccd, 0xbc6f9915)},
+          {TOBN(0xafa135bb, 0xf80e75ca), TOBN(0x12c651a0, 0x22adff2c),
+           TOBN(0xc40a04bd, 0x4f51ad96), TOBN(0x04820109, 0xbbe4e832)}},
+         {{TOBN(0x3667eb1a, 0x7f4c04cc), TOBN(0x59556621, 0xa9404f84),
+           TOBN(0x71cdf653, 0x7eceb50a), TOBN(0x994a44a6, 0x9b8335fa)},
+          {TOBN(0xd7faf819, 0xdbeb9b69), TOBN(0x473c5680, 0xeed4350d),
+           TOBN(0xb6658466, 0xda44bba2), TOBN(0x0d1bc780, 0x872bdbf3)}},
+         {{TOBN(0xe535f175, 0xa1962f91), TOBN(0x6ed7e061, 0xed58f5a7),
+           TOBN(0x177aa4c0, 0x2089a233), TOBN(0x0dbcb03a, 0xe539b413)},
+          {TOBN(0xe3dc424e, 0xbb32e38e), TOBN(0x6472e5ef, 0x6806701e),
+           TOBN(0xdd47ff98, 0x814be9ee), TOBN(0x6b60cfff, 0x35ace009)}},
+         {{TOBN(0xb8d3d931, 0x9ff91fe5), TOBN(0x039c4800, 0xf0518eed),
+           TOBN(0x95c37632, 0x9182cb26), TOBN(0x0763a434, 0x82fc568d)},
+          {TOBN(0x707c04d5, 0x383e76ba), TOBN(0xac98b930, 0x824e8197),
+           TOBN(0x92bf7c8f, 0x91230de0), TOBN(0x90876a01, 0x40959b70)}},
+         {{TOBN(0xdb6d96f3, 0x05968b80), TOBN(0x380a0913, 0x089f73b9),
+           TOBN(0x7da70b83, 0xc2c61e01), TOBN(0x95fb8394, 0x569b38c7)},
+          {TOBN(0x9a3c6512, 0x80edfe2f), TOBN(0x8f726bb9, 0x8faeaf82),
+           TOBN(0x8010a4a0, 0x78424bf8), TOBN(0x29672044, 0x0e844970)}}},
+        {{{TOBN(0x63c5cb81, 0x7a2ad62a), TOBN(0x7ef2b6b9, 0xac62ff54),
+           TOBN(0x3749bba4, 0xb3ad9db5), TOBN(0xad311f2c, 0x46d5a617)},
+          {TOBN(0xb77a8087, 0xc2ff3b6d), TOBN(0xb46feaf3, 0x367834ff),
+           TOBN(0xf8aa266d, 0x75d6b138), TOBN(0xfa38d320, 0xec008188)}},
+         {{TOBN(0x486d8ffa, 0x696946fc), TOBN(0x50fbc6d8, 0xb9cba56d),
+           TOBN(0x7e3d423e, 0x90f35a15), TOBN(0x7c3da195, 0xc0dd962c)},
+          {TOBN(0xe673fdb0, 0x3cfd5d8b), TOBN(0x0704b7c2, 0x889dfca5),
+           TOBN(0xf6ce581f, 0xf52305aa), TOBN(0x399d49eb, 0x914d5e53)}},
+         {{TOBN(0x380a496d, 0x6ec293cd), TOBN(0x733dbda7, 0x8e7051f5),
+           TOBN(0x037e388d, 0xb849140a), TOBN(0xee4b32b0, 0x5946dbf6)},
+          {TOBN(0xb1c4fda9, 0xcae368d1), TOBN(0x5001a7b0, 0xfdb0b2f3),
+           TOBN(0x6df59374, 0x2e3ac46e), TOBN(0x4af675f2, 0x39b3e656)}},
+         {{TOBN(0x44e38110, 0x39949296), TOBN(0x5b63827b, 0x361db1b5),
+           TOBN(0x3e5323ed, 0x206eaff5), TOBN(0x942370d2, 0xc21f4290)},
+          {TOBN(0xf2caaf2e, 0xe0d985a1), TOBN(0x192cc64b, 0x7239846d),
+           TOBN(0x7c0b8f47, 0xae6312f8), TOBN(0x7dc61f91, 0x96620108)}},
+         {{TOBN(0xb830fb5b, 0xc2da7de9), TOBN(0xd0e643df, 0x0ff8d3be),
+           TOBN(0x31ee77ba, 0x188a9641), TOBN(0x4e8aa3aa, 0xbcf6d502)},
+          {TOBN(0xf9fb6532, 0x9a49110f), TOBN(0xd18317f6, 0x2dd6b220),
+           TOBN(0x7e3ced41, 0x52c3ea5a), TOBN(0x0d296a14, 0x7d579c4a)}},
+         {{TOBN(0x35d6a53e, 0xed4c3717), TOBN(0x9f8240cf, 0x3d0ed2a3),
+           TOBN(0x8c0d4d05, 0xe5543aa5), TOBN(0x45d5bbfb, 0xdd33b4b4)},
+          {TOBN(0xfa04cc73, 0x137fd28e), TOBN(0x862ac6ef, 0xc73b3ffd),
+           TOBN(0x403ff9f5, 0x31f51ef2), TOBN(0x34d5e0fc, 0xbc73f5a2)}},
+         {{TOBN(0xf2526820, 0x08913f4f), TOBN(0xea20ed61, 0xeac93d95),
+           TOBN(0x51ed38b4, 0x6ca6b26c), TOBN(0x8662dcbc, 0xea4327b0)},
+          {TOBN(0x6daf295c, 0x725d2aaa), TOBN(0xbad2752f, 0x8e52dcda),
+           TOBN(0x2210e721, 0x0b17dacc), TOBN(0xa37f7912, 0xd51e8232)}},
+         {{TOBN(0x4f7081e1, 0x44cc3add), TOBN(0xd5ffa1d6, 0x87be82cf),
+           TOBN(0x89890b6c, 0x0edd6472), TOBN(0xada26e1a, 0x3ed17863)},
+          {TOBN(0x276f2715, 0x63483caa), TOBN(0xe6924cd9, 0x2f6077fd),
+           TOBN(0x05a7fe98, 0x0a466e3c), TOBN(0xf1c794b0, 0xb1902d1f)}},
+         {{TOBN(0xe5213688, 0x82a8042c), TOBN(0xd931cfaf, 0xcd278298),
+           TOBN(0x069a0ae0, 0xf597a740), TOBN(0x0adbb3f3, 0xeb59107c)},
+          {TOBN(0x983e951e, 0x5eaa8eb8), TOBN(0xe663a8b5, 0x11b48e78),
+           TOBN(0x1631cc0d, 0x8a03f2c5), TOBN(0x7577c11e, 0x11e271e2)}},
+         {{TOBN(0x33b2385c, 0x08369a90), TOBN(0x2990c59b, 0x190eb4f8),
+           TOBN(0x819a6145, 0xc68eac80), TOBN(0x7a786d62, 0x2ec4a014)},
+          {TOBN(0x33faadbe, 0x20ac3a8d), TOBN(0x31a21781, 0x5aba2d30),
+           TOBN(0x209d2742, 0xdba4f565), TOBN(0xdb2ce9e3, 0x55aa0fbb)}},
+         {{TOBN(0x8cef334b, 0x168984df), TOBN(0xe81dce17, 0x33879638),
+           TOBN(0xf6e6949c, 0x263720f0), TOBN(0x5c56feaf, 0xf593cbec)},
+          {TOBN(0x8bff5601, 0xfde58c84), TOBN(0x74e24117, 0x2eccb314),
+           TOBN(0xbcf01b61, 0x4c9a8a78), TOBN(0xa233e35e, 0x544c9868)}},
+         {{TOBN(0xb3156bf3, 0x8bd7aff1), TOBN(0x1b5ee4cb, 0x1d81b146),
+           TOBN(0x7ba1ac41, 0xd628a915), TOBN(0x8f3a8f9c, 0xfd89699e)},
+          {TOBN(0x7329b9c9, 0xa0748be7), TOBN(0x1d391c95, 0xa92e621f),
+           TOBN(0xe51e6b21, 0x4d10a837), TOBN(0xd255f53a, 0x4947b435)}},
+         {{TOBN(0x07669e04, 0xf1788ee3), TOBN(0xc14f27af, 0xa86938a2),
+           TOBN(0x8b47a334, 0xe93a01c0), TOBN(0xff627438, 0xd9366808)},
+          {TOBN(0x7a0985d8, 0xca2a5965), TOBN(0x3d9a5542, 0xd6e9b9b3),
+           TOBN(0xc23eb80b, 0x4cf972e8), TOBN(0x5c1c33bb, 0x4fdf72fd)}},
+         {{TOBN(0x0c4a58d4, 0x74a86108), TOBN(0xf8048a8f, 0xee4c5d90),
+           TOBN(0xe3c7c924, 0xe86d4c80), TOBN(0x28c889de, 0x056a1e60)},
+          {TOBN(0x57e2662e, 0xb214a040), TOBN(0xe8c48e98, 0x37e10347),
+           TOBN(0x87742862, 0x80ac748a), TOBN(0xf1c24022, 0x186b06f2)}},
+         {{TOBN(0xac2dd4c3, 0x5f74040a), TOBN(0x409aeb71, 0xfceac957),
+           TOBN(0x4fbad782, 0x55c4ec23), TOBN(0xb359ed61, 0x8a7b76ec)},
+          {TOBN(0x12744926, 0xed6f4a60), TOBN(0xe21e8d7f, 0x4b912de3),
+           TOBN(0xe2575a59, 0xfc705a59), TOBN(0x72f1d4de, 0xed2dbc0e)}},
+         {{TOBN(0x3d2b24b9, 0xeb7926b8), TOBN(0xbff88cb3, 0xcdbe5509),
+           TOBN(0xd0f399af, 0xe4dd640b), TOBN(0x3c5fe130, 0x2f76ed45)},
+          {TOBN(0x6f3562f4, 0x3764fb3d), TOBN(0x7b5af318, 0x3151b62d),
+           TOBN(0xd5bd0bc7, 0xd79ce5f3), TOBN(0xfdaf6b20, 0xec66890f)}},
+         {{TOBN(0x735c67ec, 0x6063540c), TOBN(0x50b259c2, 0xe5f9cb8f),
+           TOBN(0xb8734f9a, 0x3f99c6ab), TOBN(0xf8cc13d5, 0xa3a7bc85)},
+          {TOBN(0x80c1b305, 0xc5217659), TOBN(0xfe5364d4, 0x4ec12a54),
+           TOBN(0xbd87045e, 0x681345fe), TOBN(0x7f8efeb1, 0x582f897f)}},
+         {{TOBN(0xe8cbf1e5, 0xd5923359), TOBN(0xdb0cea9d, 0x539b9fb0),
+           TOBN(0x0c5b34cf, 0x49859b98), TOBN(0x5e583c56, 0xa4403cc6)},
+          {TOBN(0x11fc1a2d, 0xd48185b7), TOBN(0xc93fbc7e, 0x6e521787),
+           TOBN(0x47e7a058, 0x05105b8b), TOBN(0x7b4d4d58, 0xdb8260c8)}},
+         {{TOBN(0xe33930b0, 0x46eb842a), TOBN(0x8e844a9a, 0x7bdae56d),
+           TOBN(0x34ef3a9e, 0x13f7fdfc), TOBN(0xb3768f82, 0x636ca176)},
+          {TOBN(0x2821f4e0, 0x4e09e61c), TOBN(0x414dc3a1, 0xa0c7cddc),
+           TOBN(0xd5379437, 0x54945fcd), TOBN(0x151b6eef, 0xb3555ff1)}},
+         {{TOBN(0xb31bd613, 0x6339c083), TOBN(0x39ff8155, 0xdfb64701),
+           TOBN(0x7c3388d2, 0xe29604ab), TOBN(0x1e19084b, 0xa6b10442)},
+          {TOBN(0x17cf54c0, 0xeccd47ef), TOBN(0x89693385, 0x4a5dfb30),
+           TOBN(0x69d023fb, 0x47daf9f6), TOBN(0x9222840b, 0x7d91d959)}},
+         {{TOBN(0x439108f5, 0x803bac62), TOBN(0x0b7dd91d, 0x379bd45f),
+           TOBN(0xd651e827, 0xca63c581), TOBN(0x5c5d75f6, 0x509c104f)},
+          {TOBN(0x7d5fc738, 0x1f2dc308), TOBN(0x20faa7bf, 0xd98454be),
+           TOBN(0x95374bee, 0xa517b031), TOBN(0xf036b9b1, 0x642692ac)}},
+         {{TOBN(0xc5106109, 0x39842194), TOBN(0xb7e2353e, 0x49d05295),
+           TOBN(0xfc8c1d5c, 0xefb42ee0), TOBN(0xe04884eb, 0x08ce811c)},
+          {TOBN(0xf1f75d81, 0x7419f40e), TOBN(0x5b0ac162, 0xa995c241),
+           TOBN(0x120921bb, 0xc4c55646), TOBN(0x713520c2, 0x8d33cf97)}},
+         {{TOBN(0xb4a65a5c, 0xe98c5100), TOBN(0x6cec871d, 0x2ddd0f5a),
+           TOBN(0x251f0b7f, 0x9ba2e78b), TOBN(0x224a8434, 0xce3a2a5f)},
+          {TOBN(0x26827f61, 0x25f5c46f), TOBN(0x6a22bedc, 0x48545ec0),
+           TOBN(0x25ae5fa0, 0xb1bb5cdc), TOBN(0xd693682f, 0xfcb9b98f)}},
+         {{TOBN(0x32027fe8, 0x91e5d7d3), TOBN(0xf14b7d17, 0x73a07678),
+           TOBN(0xf88497b3, 0xc0dfdd61), TOBN(0xf7c2eec0, 0x2a8c4f48)},
+          {TOBN(0xaa5573f4, 0x3756e621), TOBN(0xc013a240, 0x1825b948),
+           TOBN(0x1c03b345, 0x63878572), TOBN(0xa0472bea, 0x653a4184)}},
+         {{TOBN(0xf4222e27, 0x0ac69a80), TOBN(0x34096d25, 0xf51e54f6),
+           TOBN(0x00a648cb, 0x8fffa591), TOBN(0x4e87acdc, 0x69b6527f)},
+          {TOBN(0x0575e037, 0xe285ccb4), TOBN(0x188089e4, 0x50ddcf52),
+           TOBN(0xaa96c9a8, 0x870ff719), TOBN(0x74a56cd8, 0x1fc7e369)}},
+         {{TOBN(0x41d04ee2, 0x1726931a), TOBN(0x0bbbb2c8, 0x3660ecfd),
+           TOBN(0xa6ef6de5, 0x24818e18), TOBN(0xe421cc51, 0xe7d57887)},
+          {TOBN(0xf127d208, 0xbea87be6), TOBN(0x16a475d3, 0xb1cdd682),
+           TOBN(0x9db1b684, 0x439b63f7), TOBN(0x5359b3db, 0xf0f113b6)}},
+         {{TOBN(0xdfccf1de, 0x8bf06e31), TOBN(0x1fdf8f44, 0xdd383901),
+           TOBN(0x10775cad, 0x5017e7d2), TOBN(0xdfc3a597, 0x58d11eef)},
+          {TOBN(0x6ec9c8a0, 0xb1ecff10), TOBN(0xee6ed6cc, 0x28400549),
+           TOBN(0xb5ad7bae, 0x1b4f8d73), TOBN(0x61b4f11d, 0xe00aaab9)}},
+         {{TOBN(0x7b32d69b, 0xd4eff2d7), TOBN(0x88ae6771, 0x4288b60f),
+           TOBN(0x159461b4, 0x37a1e723), TOBN(0x1f3d4789, 0x570aae8c)},
+          {TOBN(0x869118c0, 0x7f9871da), TOBN(0x35fbda78, 0xf635e278),
+           TOBN(0x738f3641, 0xe1541dac), TOBN(0x6794b13a, 0xc0dae45f)}},
+         {{TOBN(0x065064ac, 0x09cc0917), TOBN(0x27c53729, 0xc68540fd),
+           TOBN(0x0d2d4c8e, 0xef227671), TOBN(0xd23a9f80, 0xa1785a04)},
+          {TOBN(0x98c59528, 0x52650359), TOBN(0xfa09ad01, 0x74a1acad),
+           TOBN(0x082d5a29, 0x0b55bf5c), TOBN(0xa40f1c67, 0x419b8084)}},
+         {{TOBN(0x3a5c752e, 0xdcc18770), TOBN(0x4baf1f2f, 0x8825c3a5),
+           TOBN(0xebd63f74, 0x21b153ed), TOBN(0xa2383e47, 0xb2f64723)},
+          {TOBN(0xe7bf620a, 0x2646d19a), TOBN(0x56cb44ec, 0x03c83ffd),
+           TOBN(0xaf7267c9, 0x4f6be9f1), TOBN(0x8b2dfd7b, 0xc06bb5e9)}},
+         {{TOBN(0xb87072f2, 0xa672c5c7), TOBN(0xeacb11c8, 0x0d53c5e2),
+           TOBN(0x22dac29d, 0xff435932), TOBN(0x37bdb99d, 0x4408693c)},
+          {TOBN(0xf6e62fb6, 0x2899c20f), TOBN(0x3535d512, 0x447ece24),
+           TOBN(0xfbdc6b88, 0xff577ce3), TOBN(0x726693bd, 0x190575f2)}},
+         {{TOBN(0x6772b0e5, 0xab4b35a2), TOBN(0x1d8b6001, 0xf5eeaacf),
+           TOBN(0x728f7ce4, 0x795b9580), TOBN(0x4a20ed2a, 0x41fb81da)},
+          {TOBN(0x9f685cd4, 0x4fec01e6), TOBN(0x3ed7ddcc, 0xa7ff50ad),
+           TOBN(0x460fd264, 0x0c2d97fd), TOBN(0x3a241426, 0xeb82f4f9)}},
+         {{TOBN(0x17d1df2c, 0x6a8ea820), TOBN(0xb2b50d3b, 0xf22cc254),
+           TOBN(0x03856cba, 0xb7291426), TOBN(0x87fd26ae, 0x04f5ee39)},
+          {TOBN(0x9cb696cc, 0x02bee4ba), TOBN(0x53121804, 0x06820fd6),
+           TOBN(0xa5dfc269, 0x0212e985), TOBN(0x666f7ffa, 0x160f9a09)}},
+         {{TOBN(0xc503cd33, 0xbccd9617), TOBN(0x365dede4, 0xba7730a3),
+           TOBN(0x798c6355, 0x5ddb0786), TOBN(0xa6c3200e, 0xfc9cd3bc)},
+          {TOBN(0x060ffb2c, 0xe5e35efd), TOBN(0x99a4e25b, 0x5555a1c1),
+           TOBN(0x11d95375, 0xf70b3751), TOBN(0x0a57354a, 0x160e1bf6)}},
+         {{TOBN(0xecb3ae4b, 0xf8e4b065), TOBN(0x07a834c4, 0x2e53022b),
+           TOBN(0x1cd300b3, 0x8692ed96), TOBN(0x16a6f792, 0x61ee14ec)},
+          {TOBN(0x8f1063c6, 0x6a8649ed), TOBN(0xfbcdfcfe, 0x869f3e14),
+           TOBN(0x2cfb97c1, 0x00a7b3ec), TOBN(0xcea49b3c, 0x7130c2f1)}},
+         {{TOBN(0x462d044f, 0xe9d96488), TOBN(0x4b53d52e, 0x8182a0c1),
+           TOBN(0x84b6ddd3, 0x0391e9e9), TOBN(0x80ab7b48, 0xb1741a09)},
+          {TOBN(0xec0e15d4, 0x27d3317f), TOBN(0x8dfc1ddb, 0x1a64671e),
+           TOBN(0x93cc5d5f, 0xd49c5b92), TOBN(0xc995d53d, 0x3674a331)}},
+         {{TOBN(0x302e41ec, 0x090090ae), TOBN(0x2278a0cc, 0xedb06830),
+           TOBN(0x1d025932, 0xfbc99690), TOBN(0x0c32fbd2, 0xb80d68da)},
+          {TOBN(0xd79146da, 0xf341a6c1), TOBN(0xae0ba139, 0x1bef68a0),
+           TOBN(0xc6b8a563, 0x8d774b3a), TOBN(0x1cf307bd, 0x880ba4d7)}},
+         {{TOBN(0xc033bdc7, 0x19803511), TOBN(0xa9f97b3b, 0x8888c3be),
+           TOBN(0x3d68aebc, 0x85c6d05e), TOBN(0xc3b88a9d, 0x193919eb)},
+          {TOBN(0x2d300748, 0xc48b0ee3), TOBN(0x7506bc7c, 0x07a746c1),
+           TOBN(0xfc48437c, 0x6e6d57f3), TOBN(0x5bd71587, 0xcfeaa91a)}},
+         {{TOBN(0xa4ed0408, 0xc1bc5225), TOBN(0xd0b946db, 0x2719226d),
+           TOBN(0x109ecd62, 0x758d2d43), TOBN(0x75c8485a, 0x2751759b)},
+          {TOBN(0xb0b75f49, 0x9ce4177a), TOBN(0x4fa61a1e, 0x79c10c3d),
+           TOBN(0xc062d300, 0xa167fcd7), TOBN(0x4df3874c, 0x750f0fa8)}},
+         {{TOBN(0x29ae2cf9, 0x83dfedc9), TOBN(0xf8437134, 0x8d87631a),
+           TOBN(0xaf571711, 0x7429c8d2), TOBN(0x18d15867, 0x146d9272)},
+          {TOBN(0x83053ecf, 0x69769bb7), TOBN(0xc55eb856, 0xc479ab82),
+           TOBN(0x5ef7791c, 0x21b0f4b2), TOBN(0xaa5956ba, 0x3d491525)}},
+         {{TOBN(0x407a96c2, 0x9fe20eba), TOBN(0xf27168bb, 0xe52a5ad3),
+           TOBN(0x43b60ab3, 0xbf1d9d89), TOBN(0xe45c51ef, 0x710e727a)},
+          {TOBN(0xdfca5276, 0x099b4221), TOBN(0x8dc6407c, 0x2557a159),
+           TOBN(0x0ead8335, 0x91035895), TOBN(0x0a9db957, 0x9c55dc32)}},
+         {{TOBN(0xe40736d3, 0xdf61bc76), TOBN(0x13a619c0, 0x3f778cdb),
+           TOBN(0x6dd921a4, 0xc56ea28f), TOBN(0x76a52433, 0x2fa647b4)},
+          {TOBN(0x23591891, 0xac5bdc5d), TOBN(0xff4a1a72, 0xbac7dc01),
+           TOBN(0x9905e261, 0x62df8453), TOBN(0x3ac045df, 0xe63b265f)}},
+         {{TOBN(0x8a3f341b, 0xad53dba7), TOBN(0x8ec269cc, 0x837b625a),
+           TOBN(0xd71a2782, 0x3ae31189), TOBN(0x8fb4f9a3, 0x55e96120)},
+          {TOBN(0x804af823, 0xff9875cf), TOBN(0x23224f57, 0x5d442a9b),
+           TOBN(0x1c4d3b9e, 0xecc62679), TOBN(0x91da22fb, 0xa0e7ddb1)}},
+         {{TOBN(0xa370324d, 0x6c04a661), TOBN(0x9710d3b6, 0x5e376d17),
+           TOBN(0xed8c98f0, 0x3044e357), TOBN(0xc364ebbe, 0x6422701c)},
+          {TOBN(0x347f5d51, 0x7733d61c), TOBN(0xd55644b9, 0xcea826c3),
+           TOBN(0x80c6e0ad, 0x55a25548), TOBN(0x0aa7641d, 0x844220a7)}},
+         {{TOBN(0x1438ec81, 0x31810660), TOBN(0x9dfa6507, 0xde4b4043),
+           TOBN(0x10b515d8, 0xcc3e0273), TOBN(0x1b6066dd, 0x28d8cfb2)},
+          {TOBN(0xd3b04591, 0x9c9efebd), TOBN(0x425d4bdf, 0xa21c1ff4),
+           TOBN(0x5fe5af19, 0xd57607d3), TOBN(0xbbf773f7, 0x54481084)}},
+         {{TOBN(0x8435bd69, 0x94b03ed1), TOBN(0xd9ad1de3, 0x634cc546),
+           TOBN(0x2cf423fc, 0x00e420ca), TOBN(0xeed26d80, 0xa03096dd)},
+          {TOBN(0xd7f60be7, 0xa4db09d2), TOBN(0xf47f569d, 0x960622f7),
+           TOBN(0xe5925fd7, 0x7296c729), TOBN(0xeff2db26, 0x26ca2715)}},
+         {{TOBN(0xa6fcd014, 0xb913e759), TOBN(0x53da4786, 0x8ff4de93),
+           TOBN(0x14616d79, 0xc32068e1), TOBN(0xb187d664, 0xccdf352e)},
+          {TOBN(0xf7afb650, 0x1dc90b59), TOBN(0x8170e943, 0x7daa1b26),
+           TOBN(0xc8e3bdd8, 0x700c0a84), TOBN(0x6e8d345f, 0x6482bdfa)}},
+         {{TOBN(0x84cfbfa1, 0xc5c5ea50), TOBN(0xd3baf14c, 0x67960681),
+           TOBN(0x26398403, 0x0dd50942), TOBN(0xe4b7839c, 0x4716a663)},
+          {TOBN(0xd5f1f794, 0xe7de6dc0), TOBN(0x5cd0f4d4, 0x622aa7ce),
+           TOBN(0x5295f3f1, 0x59acfeec), TOBN(0x8d933552, 0x953e0607)}},
+         {{TOBN(0xc7db8ec5, 0x776c5722), TOBN(0xdc467e62, 0x2b5f290c),
+           TOBN(0xd4297e70, 0x4ff425a9), TOBN(0x4be924c1, 0x0cf7bb72)},
+          {TOBN(0x0d5dc5ae, 0xa1892131), TOBN(0x8bf8a8e3, 0xa705c992),
+           TOBN(0x73a0b064, 0x7a305ac5), TOBN(0x00c9ca4e, 0x9a8c77a8)}},
+         {{TOBN(0x5dfee80f, 0x83774bdd), TOBN(0x63131602, 0x85734485),
+           TOBN(0xa1b524ae, 0x914a69a9), TOBN(0xebc2ffaf, 0xd4e300d7)},
+          {TOBN(0x52c93db7, 0x7cfa46a5), TOBN(0x71e6161f, 0x21653b50),
+           TOBN(0x3574fc57, 0xa4bc580a), TOBN(0xc09015dd, 0xe1bc1253)}},
+         {{TOBN(0x4b7b47b2, 0xd174d7aa), TOBN(0x4072d8e8, 0xf3a15d04),
+           TOBN(0xeeb7d47f, 0xd6fa07ed), TOBN(0x6f2b9ff9, 0xedbdafb1)},
+          {TOBN(0x18c51615, 0x3760fe8a), TOBN(0x7a96e6bf, 0xf06c6c13),
+           TOBN(0x4d7a0410, 0x0ea2d071), TOBN(0xa1914e9b, 0x0be2a5ce)}},
+         {{TOBN(0x5726e357, 0xd8a3c5cf), TOBN(0x1197ecc3, 0x2abb2b13),
+           TOBN(0x6c0d7f7f, 0x31ae88dd), TOBN(0x15b20d1a, 0xfdbb3efe)},
+          {TOBN(0xcd06aa26, 0x70584039), TOBN(0x2277c969, 0xa7dc9747),
+           TOBN(0xbca69587, 0x7855d815), TOBN(0x899ea238, 0x5188b32a)}},
+         {{TOBN(0x37d9228b, 0x760c1c9d), TOBN(0xc7efbb11, 0x9b5c18da),
+           TOBN(0x7f0d1bc8, 0x19f6dbc5), TOBN(0x4875384b, 0x07e6905b)},
+          {TOBN(0xc7c50baa, 0x3ba8cd86), TOBN(0xb0ce40fb, 0xc2905de0),
+           TOBN(0x70840673, 0x7a231952), TOBN(0xa912a262, 0xcf43de26)}},
+         {{TOBN(0x9c38ddcc, 0xeb5b76c1), TOBN(0x746f5285, 0x26fc0ab4),
+           TOBN(0x52a63a50, 0xd62c269f), TOBN(0x60049c55, 0x99458621)},
+          {TOBN(0xe7f48f82, 0x3c2f7c9e), TOBN(0x6bd99043, 0x917d5cf3),
+           TOBN(0xeb1317a8, 0x8701f469), TOBN(0xbd3fe2ed, 0x9a449fe0)}},
+         {{TOBN(0x421e79ca, 0x12ef3d36), TOBN(0x9ee3c36c, 0x3e7ea5de),
+           TOBN(0xe48198b5, 0xcdff36f7), TOBN(0xaff4f967, 0xc6b82228)},
+          {TOBN(0x15e19dd0, 0xc47adb7e), TOBN(0x45699b23, 0x032e7dfa),
+           TOBN(0x40680c8b, 0x1fae026a), TOBN(0x5a347a48, 0x550dbf4d)}},
+         {{TOBN(0xe652533b, 0x3cef0d7d), TOBN(0xd94f7b18, 0x2bbb4381),
+           TOBN(0x838752be, 0x0e80f500), TOBN(0x8e6e2488, 0x9e9c9bfb)},
+          {TOBN(0xc9751697, 0x16caca6a), TOBN(0x866c49d8, 0x38531ad9),
+           TOBN(0xc917e239, 0x7151ade1), TOBN(0x2d016ec1, 0x6037c407)}},
+         {{TOBN(0xa407ccc9, 0x00eac3f9), TOBN(0x835f6280, 0xe2ed4748),
+           TOBN(0xcc54c347, 0x1cc98e0d), TOBN(0x0e969937, 0xdcb572eb)},
+          {TOBN(0x1b16c8e8, 0x8f30c9cb), TOBN(0xa606ae75, 0x373c4661),
+           TOBN(0x47aa689b, 0x35502cab), TOBN(0xf89014ae, 0x4d9bb64f)}},
+         {{TOBN(0x202f6a9c, 0x31c71f7b), TOBN(0x01f95aa3, 0x296ffe5c),
+           TOBN(0x5fc06014, 0x53cec3a3), TOBN(0xeb991237, 0x5f498a45)},
+          {TOBN(0xae9a935e, 0x5d91ba87), TOBN(0xc6ac6281, 0x0b564a19),
+           TOBN(0x8a8fe81c, 0x3bd44e69), TOBN(0x7c8b467f, 0x9dd11d45)}},
+         {{TOBN(0xf772251f, 0xea5b8e69), TOBN(0xaeecb3bd, 0xc5b75fbc),
+           TOBN(0x1aca3331, 0x887ff0e5), TOBN(0xbe5d49ff, 0x19f0a131)},
+          {TOBN(0x582c13aa, 0xe5c8646f), TOBN(0xdbaa12e8, 0x20e19980),
+           TOBN(0x8f40f31a, 0xf7abbd94), TOBN(0x1f13f5a8, 0x1dfc7663)}},
+         {{TOBN(0x5d81f1ee, 0xaceb4fc0), TOBN(0x36256002, 0x5e6f0f42),
+           TOBN(0x4b67d6d7, 0x751370c8), TOBN(0x2608b698, 0x03e80589)},
+          {TOBN(0xcfc0d2fc, 0x05268301), TOBN(0xa6943d39, 0x40309212),
+           TOBN(0x192a90c2, 0x1fd0e1c2), TOBN(0xb209f113, 0x37f1dc76)}},
+         {{TOBN(0xefcc5e06, 0x97bf1298), TOBN(0xcbdb6730, 0x219d639e),
+           TOBN(0xd009c116, 0xb81e8c6f), TOBN(0xa3ffdde3, 0x1a7ce2e5)},
+          {TOBN(0xc53fbaaa, 0xa914d3ba), TOBN(0x836d500f, 0x88df85ee),
+           TOBN(0xd98dc71b, 0x66ee0751), TOBN(0x5a3d7005, 0x714516fd)}},
+         {{TOBN(0x21d3634d, 0x39eedbba), TOBN(0x35cd2e68, 0x0455a46d),
+           TOBN(0xc8cafe65, 0xf9d7eb0c), TOBN(0xbda3ce9e, 0x00cefb3e)},
+          {TOBN(0xddc17a60, 0x2c9cf7a4), TOBN(0x01572ee4, 0x7bcb8773),
+           TOBN(0xa92b2b01, 0x8c7548df), TOBN(0x732fd309, 0xa84600e3)}},
+         {{TOBN(0xe22109c7, 0x16543a40), TOBN(0x9acafd36, 0xfede3c6c),
+           TOBN(0xfb206852, 0x6824e614), TOBN(0x2a4544a9, 0xda25dca0)},
+          {TOBN(0x25985262, 0x91d60b06), TOBN(0x281b7be9, 0x28753545),
+           TOBN(0xec667b1a, 0x90f13b27), TOBN(0x33a83aff, 0x940e2eb4)}},
+         {{TOBN(0x80009862, 0xd5d721d5), TOBN(0x0c3357a3, 0x5bd3a182),
+           TOBN(0x27f3a83b, 0x7aa2cda4), TOBN(0xb58ae74e, 0xf6f83085)},
+          {TOBN(0x2a911a81, 0x2e6dad6b), TOBN(0xde286051, 0xf43d6c5b),
+           TOBN(0x4bdccc41, 0xf996c4d8), TOBN(0xe7312ec0, 0x0ae1e24e)}}},
+        {{{TOBN(0xf8d112e7, 0x6e6485b3), TOBN(0x4d3e24db, 0x771c52f8),
+           TOBN(0x48e3ee41, 0x684a2f6d), TOBN(0x7161957d, 0x21d95551)},
+          {TOBN(0x19631283, 0xcdb12a6c), TOBN(0xbf3fa882, 0x2e50e164),
+           TOBN(0xf6254b63, 0x3166cc73), TOBN(0x3aefa7ae, 0xaee8cc38)}},
+         {{TOBN(0x79b0fe62, 0x3b36f9fd), TOBN(0x26543b23, 0xfde19fc0),
+           TOBN(0x136e64a0, 0x958482ef), TOBN(0x23f63771, 0x9b095825)},
+          {TOBN(0x14cfd596, 0xb6a1142e), TOBN(0x5ea6aac6, 0x335aac0b),
+           TOBN(0x86a0e8bd, 0xf3081dd5), TOBN(0x5fb89d79, 0x003dc12a)}},
+         {{TOBN(0xf615c33a, 0xf72e34d4), TOBN(0x0bd9ea40, 0x110eec35),
+           TOBN(0x1c12bc5b, 0xc1dea34e), TOBN(0x686584c9, 0x49ae4699)},
+          {TOBN(0x13ad95d3, 0x8c97b942), TOBN(0x4609561a, 0x4e5c7562),
+           TOBN(0x9e94a4ae, 0xf2737f89), TOBN(0xf57594c6, 0x371c78b6)}},
+         {{TOBN(0x0f0165fc, 0xe3779ee3), TOBN(0xe00e7f9d, 0xbd495d9e),
+           TOBN(0x1fa4efa2, 0x20284e7a), TOBN(0x4564bade, 0x47ac6219)},
+          {TOBN(0x90e6312a, 0xc4708e8e), TOBN(0x4f5725fb, 0xa71e9adf),
+           TOBN(0xe95f55ae, 0x3d684b9f), TOBN(0x47f7ccb1, 0x1e94b415)}},
+         {{TOBN(0x7322851b, 0x8d946581), TOBN(0xf0d13133, 0xbdf4a012),
+           TOBN(0xa3510f69, 0x6584dae0), TOBN(0x03a7c171, 0x3c9f6c6d)},
+          {TOBN(0x5be97f38, 0xe475381a), TOBN(0xca1ba422, 0x85823334),
+           TOBN(0xf83cc5c7, 0x0be17dda), TOBN(0x158b1494, 0x0b918c0f)}},
+         {{TOBN(0xda3a77e5, 0x522e6b69), TOBN(0x69c908c3, 0xbbcd6c18),
+           TOBN(0x1f1b9e48, 0xd924fd56), TOBN(0x37c64e36, 0xaa4bb3f7)},
+          {TOBN(0x5a4fdbdf, 0xee478d7d), TOBN(0xba75c8bc, 0x0193f7a0),
+           TOBN(0x84bc1e84, 0x56cd16df), TOBN(0x1fb08f08, 0x46fad151)}},
+         {{TOBN(0x8a7cabf9, 0x842e9f30), TOBN(0xa331d4bf, 0x5eab83af),
+           TOBN(0xd272cfba, 0x017f2a6a), TOBN(0x27560abc, 0x83aba0e3)},
+          {TOBN(0x94b83387, 0x0e3a6b75), TOBN(0x25c6aea2, 0x6b9f50f5),
+           TOBN(0x803d691d, 0xb5fdf6d0), TOBN(0x03b77509, 0xe6333514)}},
+         {{TOBN(0x36178903, 0x61a341c1), TOBN(0x3604dc60, 0x0cfd6142),
+           TOBN(0x022295eb, 0x8533316c), TOBN(0x3dbde4ac, 0x44af2922)},
+          {TOBN(0x898afc5d, 0x1c7eef69), TOBN(0x58896805, 0xd14f4fa1),
+           TOBN(0x05002160, 0x203c21ca), TOBN(0x6f0d1f30, 0x40ef730b)}},
+         {{TOBN(0x8e8c44d4, 0x196224f8), TOBN(0x75a4ab95, 0x374d079d),
+           TOBN(0x79085ecc, 0x7d48f123), TOBN(0x56f04d31, 0x1bf65ad8)},
+          {TOBN(0xe220bf1c, 0xbda602b2), TOBN(0x73ee1742, 0xf9612c69),
+           TOBN(0x76008fc8, 0x084fd06b), TOBN(0x4000ef9f, 0xf11380d1)}},
+         {{TOBN(0x48201b4b, 0x12cfe297), TOBN(0x3eee129c, 0x292f74e5),
+           TOBN(0xe1fe114e, 0xc9e874e8), TOBN(0x899b055c, 0x92c5fc41)},
+          {TOBN(0x4e477a64, 0x3a39c8cf), TOBN(0x82f09efe, 0x78963cc9),
+           TOBN(0x6fd3fd8f, 0xd333f863), TOBN(0x85132b2a, 0xdc949c63)}},
+         {{TOBN(0x7e06a3ab, 0x516eb17b), TOBN(0x73bec06f, 0xd2c7372b),
+           TOBN(0xe4f74f55, 0xba896da6), TOBN(0xbb4afef8, 0x8e9eb40f)},
+          {TOBN(0x2d75bec8, 0xe61d66b0), TOBN(0x02bda4b4, 0xef29300b),
+           TOBN(0x8bbaa8de, 0x026baa5a), TOBN(0xff54befd, 0xa07f4440)}},
+         {{TOBN(0xbd9b8b1d, 0xbe7a2af3), TOBN(0xec51caa9, 0x4fb74a72),
+           TOBN(0xb9937a4b, 0x63879697), TOBN(0x7c9a9d20, 0xec2687d5)},
+          {TOBN(0x1773e44f, 0x6ef5f014), TOBN(0x8abcf412, 0xe90c6900),
+           TOBN(0x387bd022, 0x8142161e), TOBN(0x50393755, 0xfcb6ff2a)}},
+         {{TOBN(0x9813fd56, 0xed6def63), TOBN(0x53cf6482, 0x7d53106c),
+           TOBN(0x991a35bd, 0x431f7ac1), TOBN(0xf1e274dd, 0x63e65faf)},
+          {TOBN(0xf63ffa3c, 0x44cc7880), TOBN(0x411a426b, 0x7c256981),
+           TOBN(0xb698b9fd, 0x93a420e0), TOBN(0x89fdddc0, 0xae53f8fe)}},
+         {{TOBN(0x766e0722, 0x32398baa), TOBN(0x205fee42, 0x5cfca031),
+           TOBN(0xa49f5341, 0x7a029cf2), TOBN(0xa88c68b8, 0x4023890d)},
+          {TOBN(0xbc275041, 0x7337aaa8), TOBN(0x9ed364ad, 0x0eb384f4),
+           TOBN(0xe0816f85, 0x29aba92f), TOBN(0x2e9e1941, 0x04e38a88)}},
+         {{TOBN(0x57eef44a, 0x3dafd2d5), TOBN(0x35d1fae5, 0x97ed98d8),
+           TOBN(0x50628c09, 0x2307f9b1), TOBN(0x09d84aae, 0xd6cba5c6)},
+          {TOBN(0x67071bc7, 0x88aaa691), TOBN(0x2dea57a9, 0xafe6cb03),
+           TOBN(0xdfe11bb4, 0x3d78ac01), TOBN(0x7286418c, 0x7fd7aa51)}},
+         {{TOBN(0xfabf7709, 0x77f7195a), TOBN(0x8ec86167, 0xadeb838f),
+           TOBN(0xea1285a8, 0xbb4f012d), TOBN(0xd6883503, 0x9a3eab3f)},
+          {TOBN(0xee5d24f8, 0x309004c2), TOBN(0xa96e4b76, 0x13ffe95e),
+           TOBN(0x0cdffe12, 0xbd223ea4), TOBN(0x8f5c2ee5, 0xb6739a53)}},
+         {{TOBN(0x5cb4aaa5, 0xdd968198), TOBN(0xfa131c52, 0x72413a6c),
+           TOBN(0x53d46a90, 0x9536d903), TOBN(0xb270f0d3, 0x48606d8e)},
+          {TOBN(0x518c7564, 0xa053a3bc), TOBN(0x088254b7, 0x1a86caef),
+           TOBN(0xb3ba8cb4, 0x0ab5efd0), TOBN(0x5c59900e, 0x4605945d)}},
+         {{TOBN(0xecace1dd, 0xa1887395), TOBN(0x40960f36, 0x932a65de),
+           TOBN(0x9611ff5c, 0x3aa95529), TOBN(0xc58215b0, 0x7c1e5a36)},
+          {TOBN(0xd48c9b58, 0xf0e1a524), TOBN(0xb406856b, 0xf590dfb8),
+           TOBN(0xc7605e04, 0x9cd95662), TOBN(0x0dd036ee, 0xa33ecf82)}},
+         {{TOBN(0xa50171ac, 0xc33156b3), TOBN(0xf09d24ea, 0x4a80172e),
+           TOBN(0x4e1f72c6, 0x76dc8eef), TOBN(0xe60caadc, 0x5e3d44ee)},
+          {TOBN(0x006ef8a6, 0x979b1d8f), TOBN(0x60908a1c, 0x97788d26),
+           TOBN(0x6e08f95b, 0x266feec0), TOBN(0x618427c2, 0x22e8c94e)}},
+         {{TOBN(0x3d613339, 0x59145a65), TOBN(0xcd9bc368, 0xfa406337),
+           TOBN(0x82d11be3, 0x2d8a52a0), TOBN(0xf6877b27, 0x97a1c590)},
+          {TOBN(0x837a819b, 0xf5cbdb25), TOBN(0x2a4fd1d8, 0xde090249),
+           TOBN(0x622a7de7, 0x74990e5f), TOBN(0x840fa5a0, 0x7945511b)}},
+         {{TOBN(0x30b974be, 0x6558842d), TOBN(0x70df8c64, 0x17f3d0a6),
+           TOBN(0x7c803520, 0x7542e46d), TOBN(0x7251fe7f, 0xe4ecc823)},
+          {TOBN(0xe59134cb, 0x5e9aac9a), TOBN(0x11bb0934, 0xf0045d71),
+           TOBN(0x53e5d9b5, 0xdbcb1d4e), TOBN(0x8d97a905, 0x92defc91)}},
+         {{TOBN(0xfe289327, 0x7946d3f9), TOBN(0xe132bd24, 0x07472273),
+           TOBN(0xeeeb510c, 0x1eb6ae86), TOBN(0x777708c5, 0xf0595067)},
+          {TOBN(0x18e2c8cd, 0x1297029e), TOBN(0x2c61095c, 0xbbf9305e),
+           TOBN(0xe466c258, 0x6b85d6d9), TOBN(0x8ac06c36, 0xda1ea530)}},
+         {{TOBN(0xa365dc39, 0xa1304668), TOBN(0xe4a9c885, 0x07f89606),
+           TOBN(0x65a4898f, 0xacc7228d), TOBN(0x3e2347ff, 0x84ca8303)},
+          {TOBN(0xa5f6fb77, 0xea7d23a3), TOBN(0x2fac257d, 0x672a71cd),
+           TOBN(0x6908bef8, 0x7e6a44d3), TOBN(0x8ff87566, 0x891d3d7a)}},
+         {{TOBN(0xe58e90b3, 0x6b0cf82e), TOBN(0x6438d246, 0x2615b5e7),
+           TOBN(0x07b1f8fc, 0x669c145a), TOBN(0xb0d8b2da, 0x36f1e1cb)},
+          {TOBN(0x54d5dadb, 0xd9184c4d), TOBN(0x3dbb18d5, 0xf93d9976),
+           TOBN(0x0a3e0f56, 0xd1147d47), TOBN(0x2afa8c8d, 0xa0a48609)}},
+         {{TOBN(0x275353e8, 0xbc36742c), TOBN(0x898f427e, 0xeea0ed90),
+           TOBN(0x26f4947e, 0x3e477b00), TOBN(0x8ad8848a, 0x308741e3)},
+          {TOBN(0x6c703c38, 0xd74a2a46), TOBN(0x5e3e05a9, 0x9ba17ba2),
+           TOBN(0xc1fa6f66, 0x4ab9a9e4), TOBN(0x474a2d9a, 0x3841d6ec)}},
+         {{TOBN(0x871239ad, 0x653ae326), TOBN(0x14bcf72a, 0xa74cbb43),
+           TOBN(0x8737650e, 0x20d4c083), TOBN(0x3df86536, 0x110ed4af)},
+          {TOBN(0xd2d86fe7, 0xb53ca555), TOBN(0x688cb00d, 0xabd5d538),
+           TOBN(0xcf81bda3, 0x1ad38468), TOBN(0x7ccfe3cc, 0xf01167b6)}},
+         {{TOBN(0xcf4f47e0, 0x6c4c1fe6), TOBN(0x557e1f1a, 0x298bbb79),
+           TOBN(0xf93b974f, 0x30d45a14), TOBN(0x174a1d2d, 0x0baf97c4)},
+          {TOBN(0x7a003b30, 0xc51fbf53), TOBN(0xd8940991, 0xee68b225),
+           TOBN(0x5b0aa7b7, 0x1c0f4173), TOBN(0x975797c9, 0xa20a7153)}},
+         {{TOBN(0x26e08c07, 0xe3533d77), TOBN(0xd7222e6a, 0x2e341c99),
+           TOBN(0x9d60ec3d, 0x8d2dc4ed), TOBN(0xbdfe0d8f, 0x7c476cf8)},
+          {TOBN(0x1fe59ab6, 0x1d056605), TOBN(0xa9ea9df6, 0x86a8551f),
+           TOBN(0x8489941e, 0x47fb8d8c), TOBN(0xfeb874eb, 0x4a7f1b10)}},
+         {{TOBN(0xfe5fea86, 0x7ee0d98f), TOBN(0x201ad34b, 0xdbf61864),
+           TOBN(0x45d8fe47, 0x37c031d4), TOBN(0xd5f49fae, 0x795f0822)},
+          {TOBN(0xdb0fb291, 0xc7f4a40c), TOBN(0x2e69d9c1, 0x730ddd92),
+           TOBN(0x754e1054, 0x49d76987), TOBN(0x8a24911d, 0x7662db87)}},
+         {{TOBN(0x61fc1810, 0x60a71676), TOBN(0xe852d1a8, 0xf66a8ad1),
+           TOBN(0x172bbd65, 0x6417231e), TOBN(0x0d6de7bd, 0x3babb11f)},
+          {TOBN(0x6fde6f88, 0xc8e347f8), TOBN(0x1c587547, 0x9bd99cc3),
+           TOBN(0x78e54ed0, 0x34076950), TOBN(0x97f0f334, 0x796e83ba)}},
+         {{TOBN(0xe4dbe1ce, 0x4924867a), TOBN(0xbd5f51b0, 0x60b84917),
+           TOBN(0x37530040, 0x3cb09a79), TOBN(0xdb3fe0f8, 0xff1743d8)},
+          {TOBN(0xed7894d8, 0x556fa9db), TOBN(0xfa262169, 0x23412fbf),
+           TOBN(0x563be0db, 0xba7b9291), TOBN(0x6ca8b8c0, 0x0c9fb234)}},
+         {{TOBN(0xed406aa9, 0xbd763802), TOBN(0xc21486a0, 0x65303da1),
+           TOBN(0x61ae291e, 0xc7e62ec4), TOBN(0x622a0492, 0xdf99333e)},
+          {TOBN(0x7fd80c9d, 0xbb7a8ee0), TOBN(0xdc2ed3bc, 0x6c01aedb),
+           TOBN(0x35c35a12, 0x08be74ec), TOBN(0xd540cb1a, 0x469f671f)}},
+         {{TOBN(0xd16ced4e, 0xcf84f6c7), TOBN(0x8561fb9c, 0x2d090f43),
+           TOBN(0x7e693d79, 0x6f239db4), TOBN(0xa736f928, 0x77bd0d94)},
+          {TOBN(0x07b4d929, 0x2c1950ee), TOBN(0xda177543, 0x56dc11b3),
+           TOBN(0xa5dfbbaa, 0x7a6a878e), TOBN(0x1c70cb29, 0x4decb08a)}},
+         {{TOBN(0xfba28c8b, 0x6f0f7c50), TOBN(0xa8eba2b8, 0x854dcc6d),
+           TOBN(0x5ff8e89a, 0x36b78642), TOBN(0x070c1c8e, 0xf6873adf)},
+          {TOBN(0xbbd3c371, 0x6484d2e4), TOBN(0xfb78318f, 0x0d414129),
+           TOBN(0x2621a39c, 0x6ad93b0b), TOBN(0x979d74c2, 0xa9e917f7)}},
+         {{TOBN(0xfc195647, 0x61fb0428), TOBN(0x4d78954a, 0xbee624d4),
+           TOBN(0xb94896e0, 0xb8ae86fd), TOBN(0x6667ac0c, 0xc91c8b13)},
+          {TOBN(0x9f180512, 0x43bcf832), TOBN(0xfbadf8b7, 0xa0010137),
+           TOBN(0xc69b4089, 0xb3ba8aa7), TOBN(0xfac4bacd, 0xe687ce85)}},
+         {{TOBN(0x9164088d, 0x977eab40), TOBN(0x51f4c5b6, 0x2760b390),
+           TOBN(0xd238238f, 0x340dd553), TOBN(0x358566c3, 0xdb1d31c9)},
+          {TOBN(0x3a5ad69e, 0x5068f5ff), TOBN(0xf31435fc, 0xdaff6b06),
+           TOBN(0xae549a5b, 0xd6debff0), TOBN(0x59e5f0b7, 0x75e01331)}},
+         {{TOBN(0x5d492fb8, 0x98559acf), TOBN(0x96018c2e, 0x4db79b50),
+           TOBN(0x55f4a48f, 0x609f66aa), TOBN(0x1943b3af, 0x4900a14f)},
+          {TOBN(0xc22496df, 0x15a40d39), TOBN(0xb2a44684, 0x4c20f7c5),
+           TOBN(0x76a35afa, 0x3b98404c), TOBN(0xbec75725, 0xff5d1b77)}},
+         {{TOBN(0xb67aa163, 0xbea06444), TOBN(0x27e95bb2, 0xf724b6f2),
+           TOBN(0x3c20e3e9, 0xd238c8ab), TOBN(0x1213754e, 0xddd6ae17)},
+          {TOBN(0x8c431020, 0x716e0f74), TOBN(0x6679c82e, 0xffc095c2),
+           TOBN(0x2eb3adf4, 0xd0ac2932), TOBN(0x2cc970d3, 0x01bb7a76)}},
+         {{TOBN(0x70c71f2f, 0x740f0e66), TOBN(0x545c616b, 0x2b6b23cc),
+           TOBN(0x4528cfcb, 0xb40a8bd7), TOBN(0xff839633, 0x2ab27722)},
+          {TOBN(0x049127d9, 0x025ac99a), TOBN(0xd314d4a0, 0x2b63e33b),
+           TOBN(0xc8c310e7, 0x28d84519), TOBN(0x0fcb8983, 0xb3bc84ba)}},
+         {{TOBN(0x2cc52261, 0x38634818), TOBN(0x501814f4, 0xb44c2e0b),
+           TOBN(0xf7e181aa, 0x54dfdba3), TOBN(0xcfd58ff0, 0xe759718c)},
+          {TOBN(0xf90cdb14, 0xd3b507a8), TOBN(0x57bd478e, 0xc50bdad8),
+           TOBN(0x29c197e2, 0x50e5f9aa), TOBN(0x4db6eef8, 0xe40bc855)}},
+         {{TOBN(0x2cc8f21a, 0xd1fc0654), TOBN(0xc71cc963, 0x81269d73),
+           TOBN(0xecfbb204, 0x077f49f9), TOBN(0xdde92571, 0xca56b793)},
+          {TOBN(0x9abed6a3, 0xf97ad8f7), TOBN(0xe6c19d3f, 0x924de3bd),
+           TOBN(0x8dce92f4, 0xa140a800), TOBN(0x85f44d1e, 0x1337af07)}},
+         {{TOBN(0x5953c08b, 0x09d64c52), TOBN(0xa1b5e49f, 0xf5df9749),
+           TOBN(0x336a8fb8, 0x52735f7d), TOBN(0xb332b6db, 0x9add676b)},
+          {TOBN(0x558b88a0, 0xb4511aa4), TOBN(0x09788752, 0xdbd5cc55),
+           TOBN(0x16b43b9c, 0xd8cd52bd), TOBN(0x7f0bc5a0, 0xc2a2696b)}},
+         {{TOBN(0x146e12d4, 0xc11f61ef), TOBN(0x9ce10754, 0x3a83e79e),
+           TOBN(0x08ec73d9, 0x6cbfca15), TOBN(0x09ff29ad, 0x5b49653f)},
+          {TOBN(0xe31b72bd, 0xe7da946e), TOBN(0xebf9eb3b, 0xee80a4f2),
+           TOBN(0xd1aabd08, 0x17598ce4), TOBN(0x18b5fef4, 0x53f37e80)}},
+         {{TOBN(0xd5d5cdd3, 0x5958cd79), TOBN(0x3580a1b5, 0x1d373114),
+           TOBN(0xa36e4c91, 0xfa935726), TOBN(0xa38c534d, 0xef20d760)},
+          {TOBN(0x7088e40a, 0x2ff5845b), TOBN(0xe5bb40bd, 0xbd78177f),
+           TOBN(0x4f06a7a8, 0x857f9920), TOBN(0xe3cc3e50, 0xe968f05d)}},
+         {{TOBN(0x1d68b7fe, 0xe5682d26), TOBN(0x5206f76f, 0xaec7f87c),
+           TOBN(0x41110530, 0x041951ab), TOBN(0x58ec52c1, 0xd4b5a71a)},
+          {TOBN(0xf3488f99, 0x0f75cf9a), TOBN(0xf411951f, 0xba82d0d5),
+           TOBN(0x27ee75be, 0x618895ab), TOBN(0xeae060d4, 0x6d8aab14)}},
+         {{TOBN(0x9ae1df73, 0x7fb54dc2), TOBN(0x1f3e391b, 0x25963649),
+           TOBN(0x242ec32a, 0xfe055081), TOBN(0x5bd450ef, 0x8491c9bd)},
+          {TOBN(0x367efc67, 0x981eb389), TOBN(0xed7e1928, 0x3a0550d5),
+           TOBN(0x362e776b, 0xab3ce75c), TOBN(0xe890e308, 0x1f24c523)}},
+         {{TOBN(0xb961b682, 0xfeccef76), TOBN(0x8b8e11f5, 0x8bba6d92),
+           TOBN(0x8f2ccc4c, 0x2b2375c4), TOBN(0x0d7f7a52, 0xe2f86cfa)},
+          {TOBN(0xfd94d30a, 0x9efe5633), TOBN(0x2d8d246b, 0x5451f934),
+           TOBN(0x2234c6e3, 0x244e6a00), TOBN(0xde2b5b0d, 0xddec8c50)}},
+         {{TOBN(0x2ce53c5a, 0xbf776f5b), TOBN(0x6f724071, 0x60357b05),
+           TOBN(0xb2593717, 0x71bf3f7a), TOBN(0x87d2501c, 0x440c4a9f)},
+          {TOBN(0x440552e1, 0x87b05340), TOBN(0xb7bf7cc8, 0x21624c32),
+           TOBN(0x4155a6ce, 0x22facddb), TOBN(0x5a4228cb, 0x889837ef)}},
+         {{TOBN(0xef87d6d6, 0xfd4fd671), TOBN(0xa233687e, 0xc2daa10e),
+           TOBN(0x75622244, 0x03c0eb96), TOBN(0x7632d184, 0x8bf19be6)},
+          {TOBN(0x05d0f8e9, 0x40735ff4), TOBN(0x3a3e6e13, 0xc00931f1),
+           TOBN(0x31ccde6a, 0xdafe3f18), TOBN(0xf381366a, 0xcfe51207)}},
+         {{TOBN(0x24c222a9, 0x60167d92), TOBN(0x62f9d6f8, 0x7529f18c),
+           TOBN(0x412397c0, 0x0353b114), TOBN(0x334d89dc, 0xef808043)},
+          {TOBN(0xd9ec63ba, 0x2a4383ce), TOBN(0xcec8e937, 0x5cf92ba0),
+           TOBN(0xfb8b4288, 0xc8be74c0), TOBN(0x67d6912f, 0x105d4391)}},
+         {{TOBN(0x7b996c46, 0x1b913149), TOBN(0x36aae2ef, 0x3a4e02da),
+           TOBN(0xb68aa003, 0x972de594), TOBN(0x284ec70d, 0x4ec6d545)},
+          {TOBN(0xf3d2b2d0, 0x61391d54), TOBN(0x69c5d5d6, 0xfe114e92),
+           TOBN(0xbe0f00b5, 0xb4482dff), TOBN(0xe1596fa5, 0xf5bf33c5)}},
+         {{TOBN(0x10595b56, 0x96a71cba), TOBN(0x944938b2, 0xfdcadeb7),
+           TOBN(0xa282da4c, 0xfccd8471), TOBN(0x98ec05f3, 0x0d37bfe1)},
+          {TOBN(0xe171ce1b, 0x0698304a), TOBN(0x2d691444, 0x21bdf79b),
+           TOBN(0xd0cd3b74, 0x1b21dec1), TOBN(0x712ecd8b, 0x16a15f71)}},
+         {{TOBN(0x8d4c00a7, 0x00fd56e1), TOBN(0x02ec9692, 0xf9527c18),
+           TOBN(0x21c44937, 0x4a3e42e1), TOBN(0x9176fbab, 0x1392ae0a)},
+          {TOBN(0x8726f1ba, 0x44b7b618), TOBN(0xb4d7aae9, 0xf1de491c),
+           TOBN(0xf91df7b9, 0x07b582c0), TOBN(0x7e116c30, 0xef60aa3a)}},
+         {{TOBN(0x99270f81, 0x466265d7), TOBN(0xb15b6fe2, 0x4df7adf0),
+           TOBN(0xfe33b2d3, 0xf9738f7f), TOBN(0x48553ab9, 0xd6d70f95)},
+          {TOBN(0x2cc72ac8, 0xc21e94db), TOBN(0x795ac38d, 0xbdc0bbee),
+           TOBN(0x0a1be449, 0x2e40478f), TOBN(0x81bd3394, 0x052bde55)}},
+         {{TOBN(0x63c8dbe9, 0x56b3c4f2), TOBN(0x017a99cf, 0x904177cc),
+           TOBN(0x947bbddb, 0x4d010fc1), TOBN(0xacf9b00b, 0xbb2c9b21)},
+          {TOBN(0x2970bc8d, 0x47173611), TOBN(0x1a4cbe08, 0xac7d756f),
+           TOBN(0x06d9f4aa, 0x67d541a2), TOBN(0xa3e8b689, 0x59c2cf44)}},
+         {{TOBN(0xaad066da, 0x4d88f1dd), TOBN(0xc604f165, 0x7ad35dea),
+           TOBN(0x7edc0720, 0x4478ca67), TOBN(0xa10dfae0, 0xba02ce06)},
+          {TOBN(0xeceb1c76, 0xaf36f4e4), TOBN(0x994b2292, 0xaf3f8f48),
+           TOBN(0xbf9ed77b, 0x77c8a68c), TOBN(0x74f544ea, 0x51744c9d)}},
+         {{TOBN(0x82d05bb9, 0x8113a757), TOBN(0x4ef2d2b4, 0x8a9885e4),
+           TOBN(0x1e332be5, 0x1aa7865f), TOBN(0x22b76b18, 0x290d1a52)},
+          {TOBN(0x308a2310, 0x44351683), TOBN(0x9d861896, 0xa3f22840),
+           TOBN(0x5959ddcd, 0x841ed947), TOBN(0x0def0c94, 0x154b73bf)}},
+         {{TOBN(0xf0105417, 0x4c7c15e0), TOBN(0x539bfb02, 0x3a277c32),
+           TOBN(0xe699268e, 0xf9dccf5f), TOBN(0x9f5796a5, 0x0247a3bd)},
+          {TOBN(0x8b839de8, 0x4f157269), TOBN(0xc825c1e5, 0x7a30196b),
+           TOBN(0x6ef0aabc, 0xdc8a5a91), TOBN(0xf4a8ce6c, 0x498b7fe6)}},
+         {{TOBN(0x1cce35a7, 0x70cbac78), TOBN(0x83488e9b, 0xf6b23958),
+           TOBN(0x0341a070, 0xd76cb011), TOBN(0xda6c9d06, 0xae1b2658)},
+          {TOBN(0xb701fb30, 0xdd648c52), TOBN(0x994ca02c, 0x52fb9fd1),
+           TOBN(0x06933117, 0x6f563086), TOBN(0x3d2b8100, 0x17856bab)}},
+         {{TOBN(0xe89f48c8, 0x5963a46e), TOBN(0x658ab875, 0xa99e61c7),
+           TOBN(0x6e296f87, 0x4b8517b4), TOBN(0x36c4fcdc, 0xfc1bc656)},
+          {TOBN(0xde5227a1, 0xa3906def), TOBN(0x9fe95f57, 0x62418945),
+           TOBN(0x20c91e81, 0xfdd96cde), TOBN(0x5adbe47e, 0xda4480de)}},
+         {{TOBN(0xa009370f, 0x396de2b6), TOBN(0x98583d4b, 0xf0ecc7bd),
+           TOBN(0xf44f6b57, 0xe51d0672), TOBN(0x03d6b078, 0x556b1984)},
+          {TOBN(0x27dbdd93, 0xb0b64912), TOBN(0x9b3a3434, 0x15687b09),
+           TOBN(0x0dba6461, 0x51ec20a9), TOBN(0xec93db7f, 0xff28187c)}},
+         {{TOBN(0x00ff8c24, 0x66e48bdd), TOBN(0x2514f2f9, 0x11ccd78e),
+           TOBN(0xeba11f4f, 0xe1250603), TOBN(0x8a22cd41, 0x243fa156)},
+          {TOBN(0xa4e58df4, 0xb283e4c6), TOBN(0x78c29859, 0x8b39783f),
+           TOBN(0x5235aee2, 0xa5259809), TOBN(0xc16284b5, 0x0e0227dd)}},
+         {{TOBN(0xa5f57916, 0x1338830d), TOBN(0x6d4b8a6b, 0xd2123fca),
+           TOBN(0x236ea68a, 0xf9c546f8), TOBN(0xc1d36873, 0xfa608d36)},
+          {TOBN(0xcd76e495, 0x8d436d13), TOBN(0xd4d9c221, 0x8fb080af),
+           TOBN(0x665c1728, 0xe8ad3fb5), TOBN(0xcf1ebe4d, 0xb3d572e0)}},
+         {{TOBN(0xa7a8746a, 0x584c5e20), TOBN(0x267e4ea1, 0xb9dc7035),
+           TOBN(0x593a15cf, 0xb9548c9b), TOBN(0x5e6e2135, 0x4bd012f3)},
+          {TOBN(0xdf31cc6a, 0x8c8f936e), TOBN(0x8af84d04, 0xb5c241dc),
+           TOBN(0x63990a6f, 0x345efb86), TOBN(0x6fef4e61, 0xb9b962cb)}}},
+        {{{TOBN(0xf6368f09, 0x25722608), TOBN(0x131260db, 0x131cf5c6),
+           TOBN(0x40eb353b, 0xfab4f7ac), TOBN(0x85c78880, 0x37eee829)},
+          {TOBN(0x4c1581ff, 0xc3bdf24e), TOBN(0x5bff75cb, 0xf5c3c5a8),
+           TOBN(0x35e8c83f, 0xa14e6f40), TOBN(0xb81d1c0f, 0x0295e0ca)}},
+         {{TOBN(0xfcde7cc8, 0xf43a730f), TOBN(0xe89b6f3c, 0x33ab590e),
+           TOBN(0xc823f529, 0xad03240b), TOBN(0x82b79afe, 0x98bea5db)},
+          {TOBN(0x568f2856, 0x962fe5de), TOBN(0x0c590adb, 0x60c591f3),
+           TOBN(0x1fc74a14, 0x4a28a858), TOBN(0x3b662498, 0xb3203f4c)}},
+         {{TOBN(0x91e3cf0d, 0x6c39765a), TOBN(0xa2db3acd, 0xac3cca0b),
+           TOBN(0x288f2f08, 0xcb953b50), TOBN(0x2414582c, 0xcf43cf1a)},
+          {TOBN(0x8dec8bbc, 0x60eee9a8), TOBN(0x54c79f02, 0x729aa042),
+           TOBN(0xd81cd5ec, 0x6532f5d5), TOBN(0xa672303a, 0xcf82e15f)}},
+         {{TOBN(0x376aafa8, 0x719c0563), TOBN(0xcd8ad2dc, 0xbc5fc79f),
+           TOBN(0x303fdb9f, 0xcb750cd3), TOBN(0x14ff052f, 0x4418b08e)},
+          {TOBN(0xf75084cf, 0x3e2d6520), TOBN(0x7ebdf0f8, 0x144ed509),
+           TOBN(0xf43bf0f2, 0xd3f25b98), TOBN(0x86ad71cf, 0xa354d837)}},
+         {{TOBN(0xb827fe92, 0x26f43572), TOBN(0xdfd3ab5b, 0x5d824758),
+           TOBN(0x315dd23a, 0x539094c1), TOBN(0x85c0e37a, 0x66623d68)},
+          {TOBN(0x575c7972, 0x7be19ae0), TOBN(0x616a3396, 0xdf0d36b5),
+           TOBN(0xa1ebb3c8, 0x26b1ff7e), TOBN(0x635b9485, 0x140ad453)}},
+         {{TOBN(0x92bf3cda, 0xda430c0b), TOBN(0x4702850e, 0x3a96dac6),
+           TOBN(0xc91cf0a5, 0x15ac326a), TOBN(0x95de4f49, 0xab8c25e4)},
+          {TOBN(0xb01bad09, 0xe265c17c), TOBN(0x24e45464, 0x087b3881),
+           TOBN(0xd43e583c, 0xe1fac5ca), TOBN(0xe17cb318, 0x6ead97a6)}},
+         {{TOBN(0x6cc39243, 0x74dcec46), TOBN(0x33cfc02d, 0x54c2b73f),
+           TOBN(0x82917844, 0xf26cd99c), TOBN(0x8819dd95, 0xd1773f89)},
+          {TOBN(0x09572aa6, 0x0871f427), TOBN(0x8e0cf365, 0xf6f01c34),
+           TOBN(0x7fa52988, 0xbff1f5af), TOBN(0x4eb357ea, 0xe75e8e50)}},
+         {{TOBN(0xd9d0c8c4, 0x868af75d), TOBN(0xd7325cff, 0x45c8c7ea),
+           TOBN(0xab471996, 0xcc81ecb0), TOBN(0xff5d55f3, 0x611824ed)},
+          {TOBN(0xbe314541, 0x1977a0ee), TOBN(0x5085c4c5, 0x722038c6),
+           TOBN(0x2d5335bf, 0xf94bb495), TOBN(0x894ad8a6, 0xc8e2a082)}},
+         {{TOBN(0x5c3e2341, 0xada35438), TOBN(0xf4a9fc89, 0x049b8c4e),
+           TOBN(0xbeeb355a, 0x9f17cf34), TOBN(0x3f311e0e, 0x6c91fe10)},
+          {TOBN(0xc2d20038, 0x92ab9891), TOBN(0x257bdcc1, 0x3e8ce9a9),
+           TOBN(0x1b2d9789, 0x88c53bee), TOBN(0x927ce89a, 0xcdba143a)}},
+         {{TOBN(0xb0a32cca, 0x523db280), TOBN(0x5c889f8a, 0x50d43783),
+           TOBN(0x503e04b3, 0x4897d16f), TOBN(0x8cdb6e78, 0x08f5f2e8)},
+          {TOBN(0x6ab91cf0, 0x179c8e74), TOBN(0xd8874e52, 0x48211d60),
+           TOBN(0xf948d4d5, 0xea851200), TOBN(0x4076d41e, 0xe6f9840a)}},
+         {{TOBN(0xc20e263c, 0x47b517ea), TOBN(0x79a448fd, 0x30685e5e),
+           TOBN(0xe55f6f78, 0xf90631a0), TOBN(0x88a790b1, 0xa79e6346)},
+          {TOBN(0x62160c7d, 0x80969fe8), TOBN(0x54f92fd4, 0x41491bb9),
+           TOBN(0xa6645c23, 0x5c957526), TOBN(0xf44cc5ae, 0xbea3ce7b)}},
+         {{TOBN(0xf7628327, 0x8b1e68b7), TOBN(0xc731ad7a, 0x303f29d3),
+           TOBN(0xfe5a9ca9, 0x57d03ecb), TOBN(0x96c0d50c, 0x41bc97a7)},
+          {TOBN(0xc4669fe7, 0x9b4f7f24), TOBN(0xfdd781d8, 0x3d9967ef),
+           TOBN(0x7892c7c3, 0x5d2c208d), TOBN(0x8bf64f7c, 0xae545cb3)}},
+         {{TOBN(0xc01f862c, 0x467be912), TOBN(0xf4c85ee9, 0xc73d30cc),
+           TOBN(0x1fa6f4be, 0x6ab83ec7), TOBN(0xa07a3c1c, 0x4e3e3cf9)},
+          {TOBN(0x87f8ef45, 0x0c00beb3), TOBN(0x30e2c2b3, 0x000d4c3e),
+           TOBN(0x1aa00b94, 0xfe08bf5b), TOBN(0x32c133aa, 0x9224ef52)}},
+         {{TOBN(0x38df16bb, 0x32e5685d), TOBN(0x68a9e069, 0x58e6f544),
+           TOBN(0x495aaff7, 0xcdc5ebc6), TOBN(0xf894a645, 0x378b135f)},
+          {TOBN(0xf316350a, 0x09e27ecf), TOBN(0xeced201e, 0x58f7179d),
+           TOBN(0x2eec273c, 0xe97861ba), TOBN(0x47ec2cae, 0xd693be2e)}},
+         {{TOBN(0xfa4c97c4, 0xf68367ce), TOBN(0xe4f47d0b, 0xbe5a5755),
+           TOBN(0x17de815d, 0xb298a979), TOBN(0xd7eca659, 0xc177dc7d)},
+          {TOBN(0x20fdbb71, 0x49ded0a3), TOBN(0x4cb2aad4, 0xfb34d3c5),
+           TOBN(0x2cf31d28, 0x60858a33), TOBN(0x3b6873ef, 0xa24aa40f)}},
+         {{TOBN(0x540234b2, 0x2c11bb37), TOBN(0x2d0366dd, 0xed4c74a3),
+           TOBN(0xf9a968da, 0xeec5f25d), TOBN(0x36601068, 0x67b63142)},
+          {TOBN(0x07cd6d2c, 0x68d7b6d4), TOBN(0xa8f74f09, 0x0c842942),
+           TOBN(0xe2751404, 0x7768b1ee), TOBN(0x4b5f7e89, 0xfe62aee4)}},
+         {{TOBN(0xc6a77177, 0x89070d26), TOBN(0xa1f28e4e, 0xdd1c8bc7),
+           TOBN(0xea5f4f06, 0x469e1f17), TOBN(0x78fc242a, 0xfbdb78e0)},
+          {TOBN(0xc9c7c592, 0x8b0588f1), TOBN(0xb6b7a0fd, 0x1535921e),
+           TOBN(0xcc5bdb91, 0xbde5ae35), TOBN(0xb42c485e, 0x12ff1864)}},
+         {{TOBN(0xa1113e13, 0xdbab98aa), TOBN(0xde9d469b, 0xa17b1024),
+           TOBN(0x23f48b37, 0xc0462d3a), TOBN(0x3752e537, 0x7c5c078d)},
+          {TOBN(0xe3a86add, 0x15544eb9), TOBN(0xf013aea7, 0x80fba279),
+           TOBN(0x8b5bb76c, 0xf22001b5), TOBN(0xe617ba14, 0xf02891ab)}},
+         {{TOBN(0xd39182a6, 0x936219d3), TOBN(0x5ce1f194, 0xae51cb19),
+           TOBN(0xc78f8598, 0xbf07a74c), TOBN(0x6d7158f2, 0x22cbf1bc)},
+          {TOBN(0x3b846b21, 0xe300ce18), TOBN(0x35fba630, 0x2d11275d),
+           TOBN(0x5fe25c36, 0xa0239b9b), TOBN(0xd8beb35d, 0xdf05d940)}},
+         {{TOBN(0x4db02bb0, 0x1f7e320d), TOBN(0x0641c364, 0x6da320ea),
+           TOBN(0x6d95fa5d, 0x821389a3), TOBN(0x92699748, 0x8fcd8e3d)},
+          {TOBN(0x316fef17, 0xceb6c143), TOBN(0x67fcb841, 0xd933762b),
+           TOBN(0xbb837e35, 0x118b17f8), TOBN(0x4b92552f, 0x9fd24821)}},
+         {{TOBN(0xae6bc70e, 0x46aca793), TOBN(0x1cf0b0e4, 0xe579311b),
+           TOBN(0x8dc631be, 0x5802f716), TOBN(0x099bdc6f, 0xbddbee4d)},
+          {TOBN(0xcc352bb2, 0x0caf8b05), TOBN(0xf74d505a, 0x72d63df2),
+           TOBN(0xb9876d4b, 0x91c4f408), TOBN(0x1ce18473, 0x9e229b2d)}},
+         {{TOBN(0x49507597, 0x83abdb4a), TOBN(0x850fbcb6, 0xdee84b18),
+           TOBN(0x6325236e, 0x609e67dc), TOBN(0x04d831d9, 0x9336c6d8)},
+          {TOBN(0x8deaae3b, 0xfa12d45d), TOBN(0xe425f8ce, 0x4746e246),
+           TOBN(0x8004c175, 0x24f5f31e), TOBN(0xaca16d8f, 0xad62c3b7)}},
+         {{TOBN(0x0dc15a6a, 0x9152f934), TOBN(0xf1235e5d, 0xed0e12c1),
+           TOBN(0xc33c06ec, 0xda477dac), TOBN(0x76be8732, 0xb2ea0006)},
+          {TOBN(0xcf3f7831, 0x0c0cd313), TOBN(0x3c524553, 0xa614260d),
+           TOBN(0x31a756f8, 0xcab22d15), TOBN(0x03ee10d1, 0x77827a20)}},
+         {{TOBN(0xd1e059b2, 0x1994ef20), TOBN(0x2a653b69, 0x638ae318),
+           TOBN(0x70d5eb58, 0x2f699010), TOBN(0x279739f7, 0x09f5f84a)},
+          {TOBN(0x5da4663c, 0x8b799336), TOBN(0xfdfdf14d, 0x203c37eb),
+           TOBN(0x32d8a9dc, 0xa1dbfb2d), TOBN(0xab40cff0, 0x77d48f9b)}},
+         {{TOBN(0xc018b383, 0xd20b42d5), TOBN(0xf9a810ef, 0x9f78845f),
+           TOBN(0x40af3753, 0xbdba9df0), TOBN(0xb90bdcfc, 0x131dfdf9)},
+          {TOBN(0x18720591, 0xf01ab782), TOBN(0xc823f211, 0x6af12a88),
+           TOBN(0xa51b80f3, 0x0dc14401), TOBN(0xde248f77, 0xfb2dfbe3)}},
+         {{TOBN(0xef5a44e5, 0x0cafe751), TOBN(0x73997c9c, 0xd4dcd221),
+           TOBN(0x32fd86d1, 0xde854024), TOBN(0xd5b53adc, 0xa09b84bb)},
+          {TOBN(0x008d7a11, 0xdcedd8d1), TOBN(0x406bd1c8, 0x74b32c84),
+           TOBN(0x5d4472ff, 0x05dde8b1), TOBN(0x2e25f2cd, 0xfce2b32f)}},
+         {{TOBN(0xbec0dd5e, 0x29dfc254), TOBN(0x4455fcf6, 0x2b98b267),
+           TOBN(0x0b4d43a5, 0xc72df2ad), TOBN(0xea70e6be, 0x48a75397)},
+          {TOBN(0x2aad6169, 0x5820f3bf), TOBN(0xf410d2dd, 0x9e37f68f),
+           TOBN(0x70fb7dba, 0x7be5ac83), TOBN(0x636bb645, 0x36ec3eec)}},
+         {{TOBN(0x27104ea3, 0x9754e21c), TOBN(0xbc87a3e6, 0x8d63c373),
+           TOBN(0x483351d7, 0x4109db9a), TOBN(0x0fa724e3, 0x60134da7)},
+          {TOBN(0x9ff44c29, 0xb0720b16), TOBN(0x2dd0cf13, 0x06aceead),
+           TOBN(0x5942758c, 0xe26929a6), TOBN(0x96c5db92, 0xb766a92b)}},
+         {{TOBN(0xcec7d4c0, 0x5f18395e), TOBN(0xd3f22744, 0x1f80d032),
+           TOBN(0x7a68b37a, 0xcb86075b), TOBN(0x074764dd, 0xafef92db)},
+          {TOBN(0xded1e950, 0x7bc7f389), TOBN(0xc580c850, 0xb9756460),
+           TOBN(0xaeeec2a4, 0x7da48157), TOBN(0x3f0b4e7f, 0x82c587b3)}},
+         {{TOBN(0x231c6de8, 0xa9f19c53), TOBN(0x5717bd73, 0x6974e34e),
+           TOBN(0xd9e1d216, 0xf1508fa9), TOBN(0x9f112361, 0xdadaa124)},
+          {TOBN(0x80145e31, 0x823b7348), TOBN(0x4dd8f0d5, 0xac634069),
+           TOBN(0xe3d82fc7, 0x2297c258), TOBN(0x276fcfee, 0x9cee7431)}},
+         {{TOBN(0x8eb61b5e, 0x2bc0aea9), TOBN(0x4f668fd5, 0xde329431),
+           TOBN(0x03a32ab1, 0x38e4b87e), TOBN(0xe1374517, 0x73d0ef0b)},
+          {TOBN(0x1a46f7e6, 0x853ac983), TOBN(0xc3bdf42e, 0x68e78a57),
+           TOBN(0xacf20785, 0x2ea96dd1), TOBN(0xa10649b9, 0xf1638460)}},
+         {{TOBN(0xf2369f0b, 0x879fbbed), TOBN(0x0ff0ae86, 0xda9d1869),
+           TOBN(0x5251d759, 0x56766f45), TOBN(0x4984d8c0, 0x2be8d0fc)},
+          {TOBN(0x7ecc95a6, 0xd21008f0), TOBN(0x29bd54a0, 0x3a1a1c49),
+           TOBN(0xab9828c5, 0xd26c50f3), TOBN(0x32c0087c, 0x51d0d251)}},
+         {{TOBN(0x9bac3ce6, 0x0c1cdb26), TOBN(0xcd94d947, 0x557ca205),
+           TOBN(0x1b1bd598, 0x9db1fdcd), TOBN(0x0eda0108, 0xa3d8b149)},
+          {TOBN(0x95066610, 0x56152fcc), TOBN(0xc2f037e6, 0xe7192b33),
+           TOBN(0xdeffb41a, 0xc92e05a4), TOBN(0x1105f6c2, 0xc2f6c62e)}},
+         {{TOBN(0x68e73500, 0x8733913c), TOBN(0xcce86163, 0x3f3adc40),
+           TOBN(0xf407a942, 0x38a278e9), TOBN(0xd13c1b9d, 0x2ab21292)},
+          {TOBN(0x93ed7ec7, 0x1c74cf5c), TOBN(0x8887dc48, 0xf1a4c1b4),
+           TOBN(0x3830ff30, 0x4b3a11f1), TOBN(0x358c5a3c, 0x58937cb6)}},
+         {{TOBN(0x027dc404, 0x89022829), TOBN(0x40e93977, 0x3b798f79),
+           TOBN(0x90ad3337, 0x38be6ead), TOBN(0x9c23f6bc, 0xf34c0a5d)},
+          {TOBN(0xd1711a35, 0xfbffd8bb), TOBN(0x60fcfb49, 0x1949d3dd),
+           TOBN(0x09c8ef4b, 0x7825d93a), TOBN(0x24233cff, 0xa0a8c968)}},
+         {{TOBN(0x67ade46c, 0xe6d982af), TOBN(0xebb6bf3e, 0xe7544d7c),
+           TOBN(0xd6b9ba76, 0x3d8bd087), TOBN(0x46fe382d, 0x4dc61280)},
+          {TOBN(0xbd39a7e8, 0xb5bdbd75), TOBN(0xab381331, 0xb8f228fe),
+           TOBN(0x0709a77c, 0xce1c4300), TOBN(0x6a247e56, 0xf337ceac)}},
+         {{TOBN(0x8f34f21b, 0x636288be), TOBN(0x9dfdca74, 0xc8a7c305),
+           TOBN(0x6decfd1b, 0xea919e04), TOBN(0xcdf2688d, 0x8e1991f8)},
+          {TOBN(0xe607df44, 0xd0f8a67e), TOBN(0xd985df4b, 0x0b58d010),
+           TOBN(0x57f834c5, 0x0c24f8f4), TOBN(0xe976ef56, 0xa0bf01ae)}},
+         {{TOBN(0x536395ac, 0xa1c32373), TOBN(0x351027aa, 0x734c0a13),
+           TOBN(0xd2f1b5d6, 0x5e6bd5bc), TOBN(0x2b539e24, 0x223debed)},
+          {TOBN(0xd4994cec, 0x0eaa1d71), TOBN(0x2a83381d, 0x661dcf65),
+           TOBN(0x5f1aed2f, 0x7b54c740), TOBN(0x0bea3fa5, 0xd6dda5ee)}},
+         {{TOBN(0x9d4fb684, 0x36cc6134), TOBN(0x8eb9bbf3, 0xc0a443dd),
+           TOBN(0xfc500e2e, 0x383b7d2a), TOBN(0x7aad621c, 0x5b775257)},
+          {TOBN(0x69284d74, 0x0a8f7cc0), TOBN(0xe820c2ce, 0x07562d65),
+           TOBN(0xbf9531b9, 0x499758ee), TOBN(0x73e95ca5, 0x6ee0cc2d)}},
+         {{TOBN(0xf61790ab, 0xfbaf50a5), TOBN(0xdf55e76b, 0x684e0750),
+           TOBN(0xec516da7, 0xf176b005), TOBN(0x575553bb, 0x7a2dddc7)},
+          {TOBN(0x37c87ca3, 0x553afa73), TOBN(0x315f3ffc, 0x4d55c251),
+           TOBN(0xe846442a, 0xaf3e5d35), TOBN(0x61b91149, 0x6495ff28)}},
+         {{TOBN(0x23cc95d3, 0xfa326dc3), TOBN(0x1df4da1f, 0x18fc2cea),
+           TOBN(0x24bf9adc, 0xd0a37d59), TOBN(0xb6710053, 0x320d6e1e)},
+          {TOBN(0x96f9667e, 0x618344d1), TOBN(0xcc7ce042, 0xa06445af),
+           TOBN(0xa02d8514, 0xd68dbc3a), TOBN(0x4ea109e4, 0x280b5a5b)}},
+         {{TOBN(0x5741a7ac, 0xb40961bf), TOBN(0x4ada5937, 0x6aa56bfa),
+           TOBN(0x7feb9145, 0x02b765d1), TOBN(0x561e97be, 0xe6ad1582)},
+          {TOBN(0xbbc4a5b6, 0xda3982f5), TOBN(0x0c2659ed, 0xb546f468),
+           TOBN(0xb8e7e6aa, 0x59612d20), TOBN(0xd83dfe20, 0xac19e8e0)}},
+         {{TOBN(0x8530c45f, 0xb835398c), TOBN(0x6106a8bf, 0xb38a41c2),
+           TOBN(0x21e8f9a6, 0x35f5dcdb), TOBN(0x39707137, 0xcae498ed)},
+          {TOBN(0x70c23834, 0xd8249f00), TOBN(0x9f14b58f, 0xab2537a0),
+           TOBN(0xd043c365, 0x5f61c0c2), TOBN(0xdc5926d6, 0x09a194a7)}},
+         {{TOBN(0xddec0339, 0x8e77738a), TOBN(0xd07a63ef, 0xfba46426),
+           TOBN(0x2e58e79c, 0xee7f6e86), TOBN(0xe59b0459, 0xff32d241)},
+          {TOBN(0xc5ec84e5, 0x20fa0338), TOBN(0x97939ac8, 0xeaff5ace),
+           TOBN(0x0310a4e3, 0xb4a38313), TOBN(0x9115fba2, 0x8f9d9885)}},
+         {{TOBN(0x8dd710c2, 0x5fadf8c3), TOBN(0x66be38a2, 0xce19c0e2),
+           TOBN(0xd42a279c, 0x4cfe5022), TOBN(0x597bb530, 0x0e24e1b8)},
+          {TOBN(0x3cde86b7, 0xc153ca7f), TOBN(0xa8d30fb3, 0x707d63bd),
+           TOBN(0xac905f92, 0xbd60d21e), TOBN(0x98e7ffb6, 0x7b9a54ab)}},
+         {{TOBN(0xd7147df8, 0xe9726a30), TOBN(0xb5e216ff, 0xafce3533),
+           TOBN(0xb550b799, 0x2ff1ec40), TOBN(0x6b613b87, 0xa1e953fd)},
+          {TOBN(0x87b88dba, 0x792d5610), TOBN(0x2ee1270a, 0xa190fbe1),
+           TOBN(0x02f4e2dc, 0x2ef581da), TOBN(0x016530e4, 0xeff82a95)}},
+         {{TOBN(0xcbb93dfd, 0x8fd6ee89), TOBN(0x16d3d986, 0x46848fff),
+           TOBN(0x600eff24, 0x1da47adf), TOBN(0x1b9754a0, 0x0ad47a71)},
+          {TOBN(0x8f9266df, 0x70c33b98), TOBN(0xaadc87ae, 0xdf34186e),
+           TOBN(0x0d2ce8e1, 0x4ad24132), TOBN(0x8a47cbfc, 0x19946eba)}},
+         {{TOBN(0x47feeb66, 0x62b5f3af), TOBN(0xcefab561, 0x0abb3734),
+           TOBN(0x449de60e, 0x19f35cb1), TOBN(0x39f8db14, 0x157f0eb9)},
+          {TOBN(0xffaecc5b, 0x3c61bfd6), TOBN(0xa5a4d41d, 0x41216703),
+           TOBN(0x7f8fabed, 0x224e1cc2), TOBN(0x0d5a8186, 0x871ad953)}},
+         {{TOBN(0xf10774f7, 0xd22da9a9), TOBN(0x45b8a678, 0xcc8a9b0d),
+           TOBN(0xd9c2e722, 0xbdc32cff), TOBN(0xbf71b5f5, 0x337202a5)},
+          {TOBN(0x95c57f2f, 0x69fc4db9), TOBN(0xb6dad34c, 0x765d01e1),
+           TOBN(0x7e0bd13f, 0xcb904635), TOBN(0x61751253, 0x763a588c)}},
+         {{TOBN(0xd85c2997, 0x81af2c2d), TOBN(0xc0f7d9c4, 0x81b9d7da),
+           TOBN(0x838a34ae, 0x08533e8d), TOBN(0x15c4cb08, 0x311d8311)},
+          {TOBN(0x97f83285, 0x8e121e14), TOBN(0xeea7dc1e, 0x85000a5f),
+           TOBN(0x0c6059b6, 0x5d256274), TOBN(0xec9beace, 0xb95075c0)}},
+         {{TOBN(0x173daad7, 0x1df97828), TOBN(0xbf851cb5, 0xa8937877),
+           TOBN(0xb083c594, 0x01646f3c), TOBN(0x3bad30cf, 0x50c6d352)},
+          {TOBN(0xfeb2b202, 0x496bbcea), TOBN(0x3cf9fd4f, 0x18a1e8ba),
+           TOBN(0xd26de7ff, 0x1c066029), TOBN(0x39c81e9e, 0x4e9ed4f8)}},
+         {{TOBN(0xd8be0cb9, 0x7b390d35), TOBN(0x01df2bbd, 0x964aab27),
+           TOBN(0x3e8c1a65, 0xc3ef64f8), TOBN(0x567291d1, 0x716ed1dd)},
+          {TOBN(0x95499c6c, 0x5f5406d3), TOBN(0x71fdda39, 0x5ba8e23f),
+           TOBN(0xcfeb320e, 0xd5096ece), TOBN(0xbe7ba92b, 0xca66dd16)}},
+         {{TOBN(0x4608d36b, 0xc6fb5a7d), TOBN(0xe3eea15a, 0x6d2dd0e0),
+           TOBN(0x75b0a3eb, 0x8f97a36a), TOBN(0xf59814cc, 0x1c83de1e)},
+          {TOBN(0x56c9c5b0, 0x1c33c23f), TOBN(0xa96c1da4, 0x6faa4136),
+           TOBN(0x46bf2074, 0xde316551), TOBN(0x3b866e7b, 0x1f756c8f)}},
+         {{TOBN(0x727727d8, 0x1495ed6b), TOBN(0xb2394243, 0xb682dce7),
+           TOBN(0x8ab8454e, 0x758610f3), TOBN(0xc243ce84, 0x857d72a4)},
+          {TOBN(0x7b320d71, 0xdbbf370f), TOBN(0xff9afa37, 0x78e0f7ca),
+           TOBN(0x0119d1e0, 0xea7b523f), TOBN(0xb997f8cb, 0x058c7d42)}},
+         {{TOBN(0x285bcd2a, 0x37bbb184), TOBN(0x51dcec49, 0xa45d1fa6),
+           TOBN(0x6ade3b64, 0xe29634cb), TOBN(0x080c94a7, 0x26b86ef1)},
+          {TOBN(0xba583db1, 0x2283fbe3), TOBN(0x902bddc8, 0x5a9315ed),
+           TOBN(0x07c1ccb3, 0x86964bec), TOBN(0x78f4eacf, 0xb6258301)}},
+         {{TOBN(0x4bdf3a49, 0x56f90823), TOBN(0xba0f5080, 0x741d777b),
+           TOBN(0x091d71c3, 0xf38bf760), TOBN(0x9633d50f, 0x9b625b02)},
+          {TOBN(0x03ecb743, 0xb8c9de61), TOBN(0xb4751254, 0x5de74720),
+           TOBN(0x9f9defc9, 0x74ce1cb2), TOBN(0x774a4f6a, 0x00bd32ef)}},
+         {{TOBN(0xaca385f7, 0x73848f22), TOBN(0x53dad716, 0xf3f8558e),
+           TOBN(0xab7b34b0, 0x93c471f9), TOBN(0xf530e069, 0x19644bc7)},
+          {TOBN(0x3d9fb1ff, 0xdd59d31a), TOBN(0x4382e0df, 0x08daa795),
+           TOBN(0x165c6f4b, 0xd5cc88d7), TOBN(0xeaa392d5, 0x4a18c900)}},
+         {{TOBN(0x94203c67, 0x648024ee), TOBN(0x188763f2, 0x8c2fabcd),
+           TOBN(0xa80f87ac, 0xbbaec835), TOBN(0x632c96e0, 0xf29d8d54)},
+          {TOBN(0x29b0a60e, 0x4c00a95e), TOBN(0x2ef17f40, 0xe011e9fa),
+           TOBN(0xf6c0e1d1, 0x15b77223), TOBN(0xaaec2c62, 0x14b04e32)}},
+         {{TOBN(0xd35688d8, 0x3d84e58c), TOBN(0x2af5094c, 0x958571db),
+           TOBN(0x4fff7e19, 0x760682a6), TOBN(0x4cb27077, 0xe39a407c)},
+          {TOBN(0x0f59c547, 0x4ff0e321), TOBN(0x169f34a6, 0x1b34c8ff),
+           TOBN(0x2bff1096, 0x52bc1ba7), TOBN(0xa25423b7, 0x83583544)}},
+         {{TOBN(0x5d55d5d5, 0x0ac8b782), TOBN(0xff6622ec, 0x2db3c892),
+           TOBN(0x48fce741, 0x6b8bb642), TOBN(0x31d6998c, 0x69d7e3dc)},
+          {TOBN(0xdbaf8004, 0xcadcaed0), TOBN(0x801b0142, 0xd81d053c),
+           TOBN(0x94b189fc, 0x59630ec6), TOBN(0x120e9934, 0xaf762c8e)}},
+         {{TOBN(0x53a29aa4, 0xfdc6a404), TOBN(0x19d8e01e, 0xa1909948),
+           TOBN(0x3cfcabf1, 0xd7e89681), TOBN(0x3321a50d, 0x4e132d37)},
+          {TOBN(0xd0496863, 0xe9a86111), TOBN(0x8c0cde61, 0x06a3bc65),
+           TOBN(0xaf866c49, 0xfc9f8eef), TOBN(0x2066350e, 0xff7f5141)}},
+         {{TOBN(0x4f8a4689, 0xe56ddfbd), TOBN(0xea1b0c07, 0xfe32983a),
+           TOBN(0x2b317462, 0x873cb8cb), TOBN(0x658deddc, 0x2d93229f)},
+          {TOBN(0x65efaf4d, 0x0f64ef58), TOBN(0xfe43287d, 0x730cc7a8),
+           TOBN(0xaebc0c72, 0x3d047d70), TOBN(0x92efa539, 0xd92d26c9)}},
+         {{TOBN(0x06e78457, 0x94b56526), TOBN(0x415cb80f, 0x0961002d),
+           TOBN(0x89e5c565, 0x76dcb10f), TOBN(0x8bbb6982, 0xff9259fe)},
+          {TOBN(0x4fe8795b, 0x9abc2668), TOBN(0xb5d4f534, 0x1e678fb1),
+           TOBN(0x6601f3be, 0x7b7da2b9), TOBN(0x98da59e2, 0xa13d6805)}},
+         {{TOBN(0x190d8ea6, 0x01799a52), TOBN(0xa20cec41, 0xb86d2952),
+           TOBN(0x3062ffb2, 0x7fff2a7c), TOBN(0x741b32e5, 0x79f19d37)},
+          {TOBN(0xf80d8181, 0x4eb57d47), TOBN(0x7a2d0ed4, 0x16aef06b),
+           TOBN(0x09735fb0, 0x1cecb588), TOBN(0x1641caaa, 0xc6061f5b)}}},
+        {{{TOBN(0x7f99824f, 0x20151427), TOBN(0x206828b6, 0x92430206),
+           TOBN(0xaa9097d7, 0xe1112357), TOBN(0xacf9a2f2, 0x09e414ec)},
+          {TOBN(0xdbdac9da, 0x27915356), TOBN(0x7e0734b7, 0x001efee3),
+           TOBN(0x54fab5bb, 0xd2b288e2), TOBN(0x4c630fc4, 0xf62dd09c)}},
+         {{TOBN(0x8537107a, 0x1ac2703b), TOBN(0xb49258d8, 0x6bc857b5),
+           TOBN(0x57df14de, 0xbcdaccd1), TOBN(0x24ab68d7, 0xc4ae8529)},
+          {TOBN(0x7ed8b5d4, 0x734e59d0), TOBN(0x5f8740c8, 0xc495cc80),
+           TOBN(0x84aedd5a, 0x291db9b3), TOBN(0x80b360f8, 0x4fb995be)}},
+         {{TOBN(0xae915f5d, 0x5fa067d1), TOBN(0x4134b57f, 0x9668960c),
+           TOBN(0xbd3656d6, 0xa48edaac), TOBN(0xdac1e3e4, 0xfc1d7436)},
+          {TOBN(0x674ff869, 0xd81fbb26), TOBN(0x449ed3ec, 0xb26c33d4),
+           TOBN(0x85138705, 0xd94203e8), TOBN(0xccde538b, 0xbeeb6f4a)}},
+         {{TOBN(0x55d5c68d, 0xa61a76fa), TOBN(0x598b441d, 0xca1554dc),
+           TOBN(0xd39923b9, 0x773b279c), TOBN(0x33331d3c, 0x36bf9efc)},
+          {TOBN(0x2d4c848e, 0x298de399), TOBN(0xcfdb8e77, 0xa1a27f56),
+           TOBN(0x94c855ea, 0x57b8ab70), TOBN(0xdcdb9dae, 0x6f7879ba)}},
+         {{TOBN(0x7bdff8c2, 0x019f2a59), TOBN(0xb3ce5bb3, 0xcb4fbc74),
+           TOBN(0xea907f68, 0x8a9173dd), TOBN(0x6cd3d0d3, 0x95a75439)},
+          {TOBN(0x92ecc4d6, 0xefed021c), TOBN(0x09a9f9b0, 0x6a77339a),
+           TOBN(0x87ca6b15, 0x7188c64a), TOBN(0x10c29968, 0x44899158)}},
+         {{TOBN(0x5859a229, 0xed6e82ef), TOBN(0x16f338e3, 0x65ebaf4e),
+           TOBN(0x0cd31387, 0x5ead67ae), TOBN(0x1c73d228, 0x54ef0bb4)},
+          {TOBN(0x4cb55131, 0x74a5c8c7), TOBN(0x01cd2970, 0x7f69ad6a),
+           TOBN(0xa04d00dd, 0xe966f87e), TOBN(0xd96fe447, 0x0b7b0321)}},
+         {{TOBN(0x342ac06e, 0x88fbd381), TOBN(0x02cd4a84, 0x5c35a493),
+           TOBN(0xe8fa89de, 0x54f1bbcd), TOBN(0x341d6367, 0x2575ed4c)},
+          {TOBN(0xebe357fb, 0xd238202b), TOBN(0x600b4d1a, 0xa984ead9),
+           TOBN(0xc35c9f44, 0x52436ea0), TOBN(0x96fe0a39, 0xa370751b)}},
+         {{TOBN(0x4c4f0736, 0x7f636a38), TOBN(0x9f943fb7, 0x0e76d5cb),
+           TOBN(0xb03510ba, 0xa8b68b8b), TOBN(0xc246780a, 0x9ed07a1f)},
+          {TOBN(0x3c051415, 0x6d549fc2), TOBN(0xc2953f31, 0x607781ca),
+           TOBN(0x955e2c69, 0xd8d95413), TOBN(0xb300fadc, 0x7bd282e3)}},
+         {{TOBN(0x81fe7b50, 0x87e9189f), TOBN(0xdb17375c, 0xf42dda27),
+           TOBN(0x22f7d896, 0xcf0a5904), TOBN(0xa0e57c5a, 0xebe348e6)},
+          {TOBN(0xa61011d3, 0xf40e3c80), TOBN(0xb1189321, 0x8db705c5),
+           TOBN(0x4ed9309e, 0x50fedec3), TOBN(0xdcf14a10, 0x4d6d5c1d)}},
+         {{TOBN(0x056c265b, 0x55691342), TOBN(0xe8e08504, 0x91049dc7),
+           TOBN(0x131329f5, 0xc9bae20a), TOBN(0x96c8b3e8, 0xd9dccdb4)},
+          {TOBN(0x8c5ff838, 0xfb4ee6b4), TOBN(0xfc5a9aeb, 0x41e8ccf0),
+           TOBN(0x7417b764, 0xfae050c6), TOBN(0x0953c3d7, 0x00452080)}},
+         {{TOBN(0x21372682, 0x38dfe7e8), TOBN(0xea417e15, 0x2bb79d4b),
+           TOBN(0x59641f1c, 0x76e7cf2d), TOBN(0x271e3059, 0xea0bcfcc)},
+          {TOBN(0x624c7dfd, 0x7253ecbd), TOBN(0x2f552e25, 0x4fca6186),
+           TOBN(0xcbf84ecd, 0x4d866e9c), TOBN(0x73967709, 0xf68d4610)}},
+         {{TOBN(0xa14b1163, 0xc27901b4), TOBN(0xfd9236e0, 0x899b8bf3),
+           TOBN(0x42b091ec, 0xcbc6da0a), TOBN(0xbb1dac6f, 0x5ad1d297)},
+          {TOBN(0x80e61d53, 0xa91cf76e), TOBN(0x4110a412, 0xd31f1ee7),
+           TOBN(0x2d87c3ba, 0x13efcf77), TOBN(0x1f374bb4, 0xdf450d76)}},
+         {{TOBN(0x5e78e2f2, 0x0d188dab), TOBN(0xe3968ed0, 0xf4b885ef),
+           TOBN(0x46c0568e, 0x7314570f), TOBN(0x31616338, 0x01170521)},
+          {TOBN(0x18e1e7e2, 0x4f0c8afe), TOBN(0x4caa75ff, 0xdeea78da),
+           TOBN(0x82db67f2, 0x7c5d8a51), TOBN(0x36a44d86, 0x6f505370)}},
+         {{TOBN(0xd72c5bda, 0x0333974f), TOBN(0x5db516ae, 0x27a70146),
+           TOBN(0x34705281, 0x210ef921), TOBN(0xbff17a8f, 0x0c9c38e5)},
+          {TOBN(0x78f4814e, 0x12476da1), TOBN(0xc1e16613, 0x33c16980),
+           TOBN(0x9e5b386f, 0x424d4bca), TOBN(0x4c274e87, 0xc85740de)}},
+         {{TOBN(0xb6a9b88d, 0x6c2f5226), TOBN(0x14d1b944, 0x550d7ca8),
+           TOBN(0x580c85fc, 0x1fc41709), TOBN(0xc1da368b, 0x54c6d519)},
+          {TOBN(0x2b0785ce, 0xd5113cf7), TOBN(0x0670f633, 0x5a34708f),
+           TOBN(0x46e23767, 0x15cc3f88), TOBN(0x1b480cfa, 0x50c72c8f)}},
+         {{TOBN(0x20288602, 0x4147519a), TOBN(0xd0981eac, 0x26b372f0),
+           TOBN(0xa9d4a7ca, 0xa785ebc8), TOBN(0xd953c50d, 0xdbdf58e9)},
+          {TOBN(0x9d6361cc, 0xfd590f8f), TOBN(0x72e9626b, 0x44e6c917),
+           TOBN(0x7fd96110, 0x22eb64cf), TOBN(0x863ebb7e, 0x9eb288f3)}},
+         {{TOBN(0x6e6ab761, 0x6aca8ee7), TOBN(0x97d10b39, 0xd7b40358),
+           TOBN(0x1687d377, 0x1e5feb0d), TOBN(0xc83e50e4, 0x8265a27a)},
+          {TOBN(0x8f75a9fe, 0xc954b313), TOBN(0xcc2e8f47, 0x310d1f61),
+           TOBN(0xf5ba81c5, 0x6557d0e0), TOBN(0x25f9680c, 0x3eaf6207)}},
+         {{TOBN(0xf95c6609, 0x4354080b), TOBN(0x5225bfa5, 0x7bf2fe1c),
+           TOBN(0xc5c004e2, 0x5c7d98fa), TOBN(0x3561bf1c, 0x019aaf60)},
+          {TOBN(0x5e6f9f17, 0xba151474), TOBN(0xdec2f934, 0xb04f6eca),
+           TOBN(0x64e368a1, 0x269acb1e), TOBN(0x1332d9e4, 0x0cdda493)}},
+         {{TOBN(0x60d6cf69, 0xdf23de05), TOBN(0x66d17da2, 0x009339a0),
+           TOBN(0x9fcac985, 0x0a693923), TOBN(0xbcf057fc, 0xed7c6a6d)},
+          {TOBN(0xc3c5c8c5, 0xf0b5662c), TOBN(0x25318dd8, 0xdcba4f24),
+           TOBN(0x60e8cb75, 0x082b69ff), TOBN(0x7c23b3ee, 0x1e728c01)}},
+         {{TOBN(0x15e10a0a, 0x097e4403), TOBN(0xcb3d0a86, 0x19854665),
+           TOBN(0x88d8e211, 0xd67d4826), TOBN(0xb39af66e, 0x0b9d2839)},
+          {TOBN(0xa5f94588, 0xbd475ca8), TOBN(0xe06b7966, 0xc077b80b),
+           TOBN(0xfedb1485, 0xda27c26c), TOBN(0xd290d33a, 0xfe0fd5e0)}},
+         {{TOBN(0xa40bcc47, 0xf34fb0fa), TOBN(0xb4760cc8, 0x1fb1ab09),
+           TOBN(0x8fca0993, 0xa273bfe3), TOBN(0x13e4fe07, 0xf70b213c)},
+          {TOBN(0x3bcdb992, 0xfdb05163), TOBN(0x8c484b11, 0x0c2b19b6),
+           TOBN(0x1acb815f, 0xaaf2e3e2), TOBN(0xc6905935, 0xb89ff1b4)}},
+         {{TOBN(0xb2ad6f9d, 0x586e74e1), TOBN(0x488883ad, 0x67b80484),
+           TOBN(0x758aa2c7, 0x369c3ddb), TOBN(0x8ab74e69, 0x9f9afd31)},
+          {TOBN(0x10fc2d28, 0x5e21beb1), TOBN(0x3484518a, 0x318c42f9),
+           TOBN(0x377427dc, 0x53cf40c3), TOBN(0x9de0781a, 0x391bc1d9)}},
+         {{TOBN(0x8faee858, 0x693807e1), TOBN(0xa3865327, 0x4e81ccc7),
+           TOBN(0x02c30ff2, 0x6f835b84), TOBN(0xb604437b, 0x0d3d38d4)},
+          {TOBN(0xb3fc8a98, 0x5ca1823d), TOBN(0xb82f7ec9, 0x03be0324),
+           TOBN(0xee36d761, 0xcf684a33), TOBN(0x5a01df0e, 0x9f29bf7d)}},
+         {{TOBN(0x686202f3, 0x1306583d), TOBN(0x05b10da0, 0x437c622e),
+           TOBN(0xbf9aaa0f, 0x076a7bc8), TOBN(0x25e94efb, 0x8f8f4e43)},
+          {TOBN(0x8a35c9b7, 0xfa3dc26d), TOBN(0xe0e5fb93, 0x96ff03c5),
+           TOBN(0xa77e3843, 0xebc394ce), TOBN(0xcede6595, 0x8361de60)}},
+         {{TOBN(0xd27c22f6, 0xa1993545), TOBN(0xab01cc36, 0x24d671ba),
+           TOBN(0x63fa2877, 0xa169c28e), TOBN(0x925ef904, 0x2eb08376)},
+          {TOBN(0x3b2fa3cf, 0x53aa0b32), TOBN(0xb27beb5b, 0x71c49d7a),
+           TOBN(0xb60e1834, 0xd105e27f), TOBN(0xd6089788, 0x4f68570d)}},
+         {{TOBN(0x23094ce0, 0xd6fbc2ac), TOBN(0x738037a1, 0x815ff551),
+           TOBN(0xda73b1bb, 0x6bef119c), TOBN(0xdcf6c430, 0xeef506ba)},
+          {TOBN(0x00e4fe7b, 0xe3ef104a), TOBN(0xebdd9a2c, 0x0a065628),
+           TOBN(0x853a81c3, 0x8792043e), TOBN(0x22ad6ece, 0xb3b59108)}},
+         {{TOBN(0x9fb813c0, 0x39cd297d), TOBN(0x8ec7e16e, 0x05bda5d9),
+           TOBN(0x2834797c, 0x0d104b96), TOBN(0xcc11a2e7, 0x7c511510)},
+          {TOBN(0x96ca5a53, 0x96ee6380), TOBN(0x054c8655, 0xcea38742),
+           TOBN(0xb5946852, 0xd54dfa7d), TOBN(0x97c422e7, 0x1f4ab207)}},
+         {{TOBN(0xbf907509, 0x0c22b540), TOBN(0x2cde42aa, 0xb7c267d4),
+           TOBN(0xba18f9ed, 0x5ab0d693), TOBN(0x3ba62aa6, 0x6e4660d9)},
+          {TOBN(0xb24bf97b, 0xab9ea96a), TOBN(0x5d039642, 0xe3b60e32),
+           TOBN(0x4e6a4506, 0x7c4d9bd5), TOBN(0x666c5b9e, 0x7ed4a6a4)}},
+         {{TOBN(0xfa3fdcd9, 0x8edbd7cc), TOBN(0x4660bb87, 0xc6ccd753),
+           TOBN(0x9ae90820, 0x21e6b64f), TOBN(0x8a56a713, 0xb36bfb3f)},
+          {TOBN(0xabfce096, 0x5726d47f), TOBN(0x9eed01b2, 0x0b1a9a7f),
+           TOBN(0x30e9cad4, 0x4eb74a37), TOBN(0x7b2524cc, 0x53e9666d)}},
+         {{TOBN(0x6a29683b, 0x8f4b002f), TOBN(0xc2200d7a, 0x41f4fc20),
+           TOBN(0xcf3af47a, 0x3a338acc), TOBN(0x6539a4fb, 0xe7128975)},
+          {TOBN(0xcec31c14, 0xc33c7fcf), TOBN(0x7eb6799b, 0xc7be322b),
+           TOBN(0x119ef4e9, 0x6646f623), TOBN(0x7b7a26a5, 0x54d7299b)}},
+         {{TOBN(0xcb37f08d, 0x403f46f2), TOBN(0x94b8fc43, 0x1a0ec0c7),
+           TOBN(0xbb8514e3, 0xc332142f), TOBN(0xf3ed2c33, 0xe80d2a7a)},
+          {TOBN(0x8d2080af, 0xb639126c), TOBN(0xf7b6be60, 0xe3553ade),
+           TOBN(0x3950aa9f, 0x1c7e2b09), TOBN(0x847ff958, 0x6410f02b)}},
+         {{TOBN(0x877b7cf5, 0x678a31b0), TOBN(0xd50301ae, 0x3998b620),
+           TOBN(0x734257c5, 0xc00fb396), TOBN(0xf9fb18a0, 0x04e672a6)},
+          {TOBN(0xff8bd8eb, 0xe8758851), TOBN(0x1e64e4c6, 0x5d99ba44),
+           TOBN(0x4b8eaedf, 0x7dfd93b7), TOBN(0xba2f2a98, 0x04e76b8c)}},
+         {{TOBN(0x7d790cba, 0xe8053433), TOBN(0xc8e725a0, 0x3d2c9585),
+           TOBN(0x58c5c476, 0xcdd8f5ed), TOBN(0xd106b952, 0xefa9fe1d)},
+          {TOBN(0x3c5c775b, 0x0eff13a9), TOBN(0x242442ba, 0xe057b930),
+           TOBN(0xe9f458d4, 0xc9b70cbd), TOBN(0x69b71448, 0xa3cdb89a)}},
+         {{TOBN(0x41ee46f6, 0x0e2ed742), TOBN(0x573f1045, 0x40067493),
+           TOBN(0xb1e154ff, 0x9d54c304), TOBN(0x2ad0436a, 0x8d3a7502)},
+          {TOBN(0xee4aaa2d, 0x431a8121), TOBN(0xcd38b3ab, 0x886f11ed),
+           TOBN(0x57d49ea6, 0x034a0eb7), TOBN(0xd2b773bd, 0xf7e85e58)}},
+         {{TOBN(0x4a559ac4, 0x9b5c1f14), TOBN(0xc444be1a, 0x3e54df2b),
+           TOBN(0x13aad704, 0xeda41891), TOBN(0xcd927bec, 0x5eb5c788)},
+          {TOBN(0xeb3c8516, 0xe48c8a34), TOBN(0x1b7ac812, 0x4b546669),
+           TOBN(0x1815f896, 0x594df8ec), TOBN(0x87c6a79c, 0x79227865)}},
+         {{TOBN(0xae02a2f0, 0x9b56ddbd), TOBN(0x1339b5ac, 0x8a2f1cf3),
+           TOBN(0xf2b569c7, 0x839dff0d), TOBN(0xb0b9e864, 0xfee9a43d)},
+          {TOBN(0x4ff8ca41, 0x77bb064e), TOBN(0x145a2812, 0xfd249f63),
+           TOBN(0x3ab7beac, 0xf86f689a), TOBN(0x9bafec27, 0x01d35f5e)}},
+         {{TOBN(0x28054c65, 0x4265aa91), TOBN(0xa4b18304, 0x035efe42),
+           TOBN(0x6887b0e6, 0x9639dec7), TOBN(0xf4b8f6ad, 0x3d52aea5)},
+          {TOBN(0xfb9293cc, 0x971a8a13), TOBN(0x3f159e5d, 0x4c934d07),
+           TOBN(0x2c50e9b1, 0x09acbc29), TOBN(0x08eb65e6, 0x7154d129)}},
+         {{TOBN(0x4feff589, 0x30b75c3e), TOBN(0x0bb82fe2, 0x94491c93),
+           TOBN(0xd8ac377a, 0x89af62bb), TOBN(0xd7b51490, 0x9685e49f)},
+          {TOBN(0xabca9a7b, 0x04497f19), TOBN(0x1b35ed0a, 0x1a7ad13f),
+           TOBN(0x6b601e21, 0x3ec86ed6), TOBN(0xda91fcb9, 0xce0c76f1)}},
+         {{TOBN(0x9e28507b, 0xd7ab27e1), TOBN(0x7c19a555, 0x63945b7b),
+           TOBN(0x6b43f0a1, 0xaafc9827), TOBN(0x443b4fbd, 0x3aa55b91)},
+          {TOBN(0x962b2e65, 0x6962c88f), TOBN(0x139da8d4, 0xce0db0ca),
+           TOBN(0xb93f05dd, 0x1b8d6c4f), TOBN(0x779cdff7, 0x180b9824)}},
+         {{TOBN(0xbba23fdd, 0xae57c7b7), TOBN(0x345342f2, 0x1b932522),
+           TOBN(0xfd9c80fe, 0x556d4aa3), TOBN(0xa03907ba, 0x6525bb61)},
+          {TOBN(0x38b010e1, 0xff218933), TOBN(0xc066b654, 0xaa52117b),
+           TOBN(0x8e141920, 0x94f2e6ea), TOBN(0x66a27dca, 0x0d32f2b2)}},
+         {{TOBN(0x69c7f993, 0x048b3717), TOBN(0xbf5a989a, 0xb178ae1c),
+           TOBN(0x49fa9058, 0x564f1d6b), TOBN(0x27ec6e15, 0xd31fde4e)},
+          {TOBN(0x4cce0373, 0x7276e7fc), TOBN(0x64086d79, 0x89d6bf02),
+           TOBN(0x5a72f046, 0x4ccdd979), TOBN(0x909c3566, 0x47775631)}},
+         {{TOBN(0x1c07bc6b, 0x75dd7125), TOBN(0xb4c6bc97, 0x87a0428d),
+           TOBN(0x507ece52, 0xfdeb6b9d), TOBN(0xfca56512, 0xb2c95432)},
+          {TOBN(0x15d97181, 0xd0e8bd06), TOBN(0x384dd317, 0xc6bb46ea),
+           TOBN(0x5441ea20, 0x3952b624), TOBN(0xbcf70dee, 0x4e7dc2fb)}},
+         {{TOBN(0x372b016e, 0x6628e8c3), TOBN(0x07a0d667, 0xb60a7522),
+           TOBN(0xcf05751b, 0x0a344ee2), TOBN(0x0ec09a48, 0x118bdeec)},
+          {TOBN(0x6e4b3d4e, 0xd83dce46), TOBN(0x43a6316d, 0x99d2fc6e),
+           TOBN(0xa99d8989, 0x56cf044c), TOBN(0x7c7f4454, 0xae3e5fb7)}},
+         {{TOBN(0xb2e6b121, 0xfbabbe92), TOBN(0x281850fb, 0xe1330076),
+           TOBN(0x093581ec, 0x97890015), TOBN(0x69b1dded, 0x75ff77f5)},
+          {TOBN(0x7cf0b18f, 0xab105105), TOBN(0x953ced31, 0xa89ccfef),
+           TOBN(0x3151f85f, 0xeb914009), TOBN(0x3c9f1b87, 0x88ed48ad)}},
+         {{TOBN(0xc9aba1a1, 0x4a7eadcb), TOBN(0x928e7501, 0x522e71cf),
+           TOBN(0xeaede727, 0x3a2e4f83), TOBN(0x467e10d1, 0x1ce3bbd3)},
+          {TOBN(0xf3442ac3, 0xb955dcf0), TOBN(0xba96307d, 0xd3d5e527),
+           TOBN(0xf763a10e, 0xfd77f474), TOBN(0x5d744bd0, 0x6a6e1ff0)}},
+         {{TOBN(0xd287282a, 0xa777899e), TOBN(0xe20eda8f, 0xd03f3cde),
+           TOBN(0x6a7e75bb, 0x50b07d31), TOBN(0x0b7e2a94, 0x6f379de4)},
+          {TOBN(0x31cb64ad, 0x19f593cf), TOBN(0x7b1a9e4f, 0x1e76ef1d),
+           TOBN(0xe18c9c9d, 0xb62d609c), TOBN(0x439bad6d, 0xe779a650)}},
+         {{TOBN(0x219d9066, 0xe032f144), TOBN(0x1db632b8, 0xe8b2ec6a),
+           TOBN(0xff0d0fd4, 0xfda12f78), TOBN(0x56fb4c2d, 0x2a25d265)},
+          {TOBN(0x5f4e2ee1, 0x255a03f1), TOBN(0x61cd6af2, 0xe96af176),
+           TOBN(0xe0317ba8, 0xd068bc97), TOBN(0x927d6bab, 0x264b988e)}},
+         {{TOBN(0xa18f07e0, 0xe90fb21e), TOBN(0x00fd2b80, 0xbba7fca1),
+           TOBN(0x20387f27, 0x95cd67b5), TOBN(0x5b89a4e7, 0xd39707f7)},
+          {TOBN(0x8f83ad3f, 0x894407ce), TOBN(0xa0025b94, 0x6c226132),
+           TOBN(0xc79563c7, 0xf906c13b), TOBN(0x5f548f31, 0x4e7bb025)}},
+         {{TOBN(0x2b4c6b8f, 0xeac6d113), TOBN(0xa67e3f9c, 0x0e813c76),
+           TOBN(0x3982717c, 0x3fe1f4b9), TOBN(0x58865819, 0x26d8050e)},
+          {TOBN(0x99f3640c, 0xf7f06f20), TOBN(0xdc610216, 0x2a66ebc2),
+           TOBN(0x52f2c175, 0x767a1e08), TOBN(0x05660e1a, 0x5999871b)}},
+         {{TOBN(0x6b0f1762, 0x6d3c4693), TOBN(0xf0e7d627, 0x37ed7bea),
+           TOBN(0xc51758c7, 0xb75b226d), TOBN(0x40a88628, 0x1f91613b)},
+          {TOBN(0x889dbaa7, 0xbbb38ce0), TOBN(0xe0404b65, 0xbddcad81),
+           TOBN(0xfebccd3a, 0x8bc9671f), TOBN(0xfbf9a357, 0xee1f5375)}},
+         {{TOBN(0x5dc169b0, 0x28f33398), TOBN(0xb07ec11d, 0x72e90f65),
+           TOBN(0xae7f3b4a, 0xfaab1eb1), TOBN(0xd970195e, 0x5f17538a)},
+          {TOBN(0x52b05cbe, 0x0181e640), TOBN(0xf5debd62, 0x2643313d),
+           TOBN(0x76148154, 0x5df31f82), TOBN(0x23e03b33, 0x3a9e13c5)}},
+         {{TOBN(0xff758949, 0x4fde0c1f), TOBN(0xbf8a1abe, 0xe5b6ec20),
+           TOBN(0x702278fb, 0x87e1db6c), TOBN(0xc447ad7a, 0x35ed658f)},
+          {TOBN(0x48d4aa38, 0x03d0ccf2), TOBN(0x80acb338, 0x819a7c03),
+           TOBN(0x9bc7c89e, 0x6e17cecc), TOBN(0x46736b8b, 0x03be1d82)}},
+         {{TOBN(0xd65d7b60, 0xc0432f96), TOBN(0xddebe7a3, 0xdeb5442f),
+           TOBN(0x79a25307, 0x7dff69a2), TOBN(0x37a56d94, 0x02cf3122)},
+          {TOBN(0x8bab8aed, 0xf2350d0a), TOBN(0x13c3f276, 0x037b0d9a),
+           TOBN(0xc664957c, 0x44c65cae), TOBN(0x88b44089, 0xc2e71a88)}},
+         {{TOBN(0xdb88e5a3, 0x5cb02664), TOBN(0x5d4c0bf1, 0x8686c72e),
+           TOBN(0xea3d9b62, 0xa682d53e), TOBN(0x9b605ef4, 0x0b2ad431)},
+          {TOBN(0x71bac202, 0xc69645d0), TOBN(0xa115f03a, 0x6a1b66e7),
+           TOBN(0xfe2c563a, 0x158f4dc4), TOBN(0xf715b3a0, 0x4d12a78c)}},
+         {{TOBN(0x8f7f0a48, 0xd413213a), TOBN(0x2035806d, 0xc04becdb),
+           TOBN(0xecd34a99, 0x5d8587f5), TOBN(0x4d8c3079, 0x9f6d3a71)},
+          {TOBN(0x1b2a2a67, 0x8d95a8f6), TOBN(0xc58c9d7d, 0xf2110d0d),
+           TOBN(0xdeee81d5, 0xcf8fba3f), TOBN(0xa42be3c0, 0x0c7cdf68)}},
+         {{TOBN(0x2126f742, 0xd43b5eaa), TOBN(0x054a0766, 0xdfa59b85),
+           TOBN(0x9d0d5e36, 0x126bfd45), TOBN(0xa1f8fbd7, 0x384f8a8f)},
+          {TOBN(0x317680f5, 0xd563fccc), TOBN(0x48ca5055, 0xf280a928),
+           TOBN(0xe00b81b2, 0x27b578cf), TOBN(0x10aad918, 0x2994a514)}},
+         {{TOBN(0xd9e07b62, 0xb7bdc953), TOBN(0x9f0f6ff2, 0x5bc086dd),
+           TOBN(0x09d1ccff, 0x655eee77), TOBN(0x45475f79, 0x5bef7df1)},
+          {TOBN(0x3faa28fa, 0x86f702cc), TOBN(0x92e60905, 0x0f021f07),
+           TOBN(0xe9e62968, 0x7f8fa8c6), TOBN(0xbd71419a, 0xf036ea2c)}},
+         {{TOBN(0x171ee1cc, 0x6028da9a), TOBN(0x5352fe1a, 0xc251f573),
+           TOBN(0xf8ff236e, 0x3fa997f4), TOBN(0xd831b6c9, 0xa5749d5f)},
+          {TOBN(0x7c872e1d, 0xe350e2c2), TOBN(0xc56240d9, 0x1e0ce403),
+           TOBN(0xf9deb077, 0x6974f5cb), TOBN(0x7d50ba87, 0x961c3728)}},
+         {{TOBN(0xd6f89426, 0x5a3a2518), TOBN(0xcf817799, 0xc6303d43),
+           TOBN(0x510a0471, 0x619e5696), TOBN(0xab049ff6, 0x3a5e307b)},
+          {TOBN(0xe4cdf9b0, 0xfeb13ec7), TOBN(0xd5e97117, 0x9d8ff90c),
+           TOBN(0xf6f64d06, 0x9afa96af), TOBN(0x00d0bf5e, 0x9d2012a2)}},
+         {{TOBN(0xe63f301f, 0x358bcdc0), TOBN(0x07689e99, 0x0a9d47f8),
+           TOBN(0x1f689e2f, 0x4f43d43a), TOBN(0x4d542a16, 0x90920904)},
+          {TOBN(0xaea293d5, 0x9ca0a707), TOBN(0xd061fe45, 0x8ac68065),
+           TOBN(0x1033bf1b, 0x0090008c), TOBN(0x29749558, 0xc08a6db6)}},
+         {{TOBN(0x74b5fc59, 0xc1d5d034), TOBN(0xf712e9f6, 0x67e215e0),
+           TOBN(0xfd520cbd, 0x860200e6), TOBN(0x0229acb4, 0x3ea22588)},
+          {TOBN(0x9cd1e14c, 0xfff0c82e), TOBN(0x87684b62, 0x59c69e73),
+           TOBN(0xda85e61c, 0x96ccb989), TOBN(0x2d5dbb02, 0xa3d06493)}},
+         {{TOBN(0xf22ad33a, 0xe86b173c), TOBN(0xe8e41ea5, 0xa79ff0e3),
+           TOBN(0x01d2d725, 0xdd0d0c10), TOBN(0x31f39088, 0x032d28f9)},
+          {TOBN(0x7b3f71e1, 0x7829839e), TOBN(0x0cf691b4, 0x4502ae58),
+           TOBN(0xef658dbd, 0xbefc6115), TOBN(0xa5cd6ee5, 0xb3ab5314)}},
+         {{TOBN(0x206c8d7b, 0x5f1d2347), TOBN(0x794645ba, 0x4cc2253a),
+           TOBN(0xd517d8ff, 0x58389e08), TOBN(0x4fa20dee, 0x9f847288)},
+          {TOBN(0xeba072d8, 0xd797770a), TOBN(0x7360c91d, 0xbf429e26),
+           TOBN(0x7200a3b3, 0x80af8279), TOBN(0x6a1c9150, 0x82dadce3)}},
+         {{TOBN(0x0ee6d3a7, 0xc35d8794), TOBN(0x042e6558, 0x0356bae5),
+           TOBN(0x9f59698d, 0x643322fd), TOBN(0x9379ae15, 0x50a61967)},
+          {TOBN(0x64b9ae62, 0xfcc9981e), TOBN(0xaed3d631, 0x6d2934c6),
+           TOBN(0x2454b302, 0x5e4e65eb), TOBN(0xab09f647, 0xf9950428)}}},
+        {{{TOBN(0xb2083a12, 0x22248acc), TOBN(0x1f6ec0ef, 0x3264e366),
+           TOBN(0x5659b704, 0x5afdee28), TOBN(0x7a823a40, 0xe6430bb5)},
+          {TOBN(0x24592a04, 0xe1900a79), TOBN(0xcde09d4a, 0xc9ee6576),
+           TOBN(0x52b6463f, 0x4b5ea54a), TOBN(0x1efe9ed3, 0xd3ca65a7)}},
+         {{TOBN(0xe27a6dbe, 0x305406dd), TOBN(0x8eb7dc7f, 0xdd5d1957),
+           TOBN(0xf54a6876, 0x387d4d8f), TOBN(0x9c479409, 0xc7762de4)},
+          {TOBN(0xbe4d5b5d, 0x99b30778), TOBN(0x25380c56, 0x6e793682),
+           TOBN(0x602d37f3, 0xdac740e3), TOBN(0x140deabe, 0x1566e4ae)}},
+         {{TOBN(0x4481d067, 0xafd32acf), TOBN(0xd8f0fcca, 0xe1f71ccf),
+           TOBN(0xd208dd0c, 0xb596f2da), TOBN(0xd049d730, 0x9aad93f9)},
+          {TOBN(0xc79f263d, 0x42ab580e), TOBN(0x09411bb1, 0x23f707b4),
+           TOBN(0x8cfde1ff, 0x835e0eda), TOBN(0x72707490, 0x90f03402)}},
+         {{TOBN(0xeaee6126, 0xc49a861e), TOBN(0x024f3b65, 0xe14f0d06),
+           TOBN(0x51a3f1e8, 0xc69bfc17), TOBN(0xc3c3a8e9, 0xa7686381)},
+          {TOBN(0x3400752c, 0xb103d4c8), TOBN(0x02bc4613, 0x9218b36b),
+           TOBN(0xc67f75eb, 0x7651504a), TOBN(0xd6848b56, 0xd02aebfa)}},
+         {{TOBN(0xbd9802e6, 0xc30fa92b), TOBN(0x5a70d96d, 0x9a552784),
+           TOBN(0x9085c4ea, 0x3f83169b), TOBN(0xfa9423bb, 0x06908228)},
+          {TOBN(0x2ffebe12, 0xfe97a5b9), TOBN(0x85da6049, 0x71b99118),
+           TOBN(0x9cbc2f7f, 0x63178846), TOBN(0xfd96bc70, 0x9153218e)}},
+         {{TOBN(0x958381db, 0x1782269b), TOBN(0xae34bf79, 0x2597e550),
+           TOBN(0xbb5c6064, 0x5f385153), TOBN(0x6f0e96af, 0xe3088048)},
+          {TOBN(0xbf6a0215, 0x77884456), TOBN(0xb3b5688c, 0x69310ea7),
+           TOBN(0x17c94295, 0x04fad2de), TOBN(0xe020f0e5, 0x17896d4d)}},
+         {{TOBN(0x730ba0ab, 0x0976505f), TOBN(0x567f6813, 0x095e2ec5),
+           TOBN(0x47062010, 0x6331ab71), TOBN(0x72cfa977, 0x41d22b9f)},
+          {TOBN(0x33e55ead, 0x8a2373da), TOBN(0xa8d0d5f4, 0x7ba45a68),
+           TOBN(0xba1d8f9c, 0x03029d15), TOBN(0x8f34f1cc, 0xfc55b9f3)}},
+         {{TOBN(0xcca4428d, 0xbbe5a1a9), TOBN(0x8187fd5f, 0x3126bd67),
+           TOBN(0x0036973a, 0x48105826), TOBN(0xa39b6663, 0xb8bd61a0)},
+          {TOBN(0x6d42deef, 0x2d65a808), TOBN(0x4969044f, 0x94636b19),
+           TOBN(0xf611ee47, 0xdd5d564c), TOBN(0x7b2f3a49, 0xd2873077)}},
+         {{TOBN(0x94157d45, 0x300eb294), TOBN(0x2b2a656e, 0x169c1494),
+           TOBN(0xc000dd76, 0xd3a47aa9), TOBN(0xa2864e4f, 0xa6243ea4)},
+          {TOBN(0x82716c47, 0xdb89842e), TOBN(0x12dfd7d7, 0x61479fb7),
+           TOBN(0x3b9a2c56, 0xe0b2f6dc), TOBN(0x46be862a, 0xd7f85d67)}},
+         {{TOBN(0x03b0d8dd, 0x0f82b214), TOBN(0x460c34f9, 0xf103cbc6),
+           TOBN(0xf32e5c03, 0x18d79e19), TOBN(0x8b8888ba, 0xa84117f8)},
+          {TOBN(0x8f3c37dc, 0xc0722677), TOBN(0x10d21be9, 0x1c1c0f27),
+           TOBN(0xd47c8468, 0xe0f7a0c6), TOBN(0x9bf02213, 0xadecc0e0)}},
+         {{TOBN(0x0baa7d12, 0x42b48b99), TOBN(0x1bcb665d, 0x48424096),
+           TOBN(0x8b847cd6, 0xebfb5cfb), TOBN(0x87c2ae56, 0x9ad4d10d)},
+          {TOBN(0xf1cbb122, 0x0de36726), TOBN(0xe7043c68, 0x3fdfbd21),
+           TOBN(0x4bd0826a, 0x4e79d460), TOBN(0x11f5e598, 0x4bd1a2cb)}},
+         {{TOBN(0x97554160, 0xb7fe7b6e), TOBN(0x7d16189a, 0x400a3fb2),
+           TOBN(0xd73e9bea, 0xe328ca1e), TOBN(0x0dd04b97, 0xe793d8cc)},
+          {TOBN(0xa9c83c9b, 0x506db8cc), TOBN(0x5cd47aae, 0xcf38814c),
+           TOBN(0x26fc430d, 0xb64b45e6), TOBN(0x079b5499, 0xd818ea84)}},
+         {{TOBN(0xebb01102, 0xc1c24a3b), TOBN(0xca24e568, 0x1c161c1a),
+           TOBN(0x103eea69, 0x36f00a4a), TOBN(0x9ad76ee8, 0x76176c7b)},
+          {TOBN(0x97451fc2, 0x538e0ff7), TOBN(0x94f89809, 0x6604b3b0),
+           TOBN(0x6311436e, 0x3249cfd7), TOBN(0x27b4a7bd, 0x41224f69)}},
+         {{TOBN(0x03b5d21a, 0xe0ac2941), TOBN(0x279b0254, 0xc2d31937),
+           TOBN(0x3307c052, 0xcac992d0), TOBN(0x6aa7cb92, 0xefa8b1f3)},
+          {TOBN(0x5a182580, 0x0d37c7a5), TOBN(0x13380c37, 0x342d5422),
+           TOBN(0x92ac2d66, 0xd5d2ef92), TOBN(0x035a70c9, 0x030c63c6)}},
+         {{TOBN(0xc16025dd, 0x4ce4f152), TOBN(0x1f419a71, 0xf9df7c06),
+           TOBN(0x6d5b2214, 0x91e4bb14), TOBN(0xfc43c6cc, 0x839fb4ce)},
+          {TOBN(0x49f06591, 0x925d6b2d), TOBN(0x4b37d9d3, 0x62186598),
+           TOBN(0x8c54a971, 0xd01b1629), TOBN(0xe1a9c29f, 0x51d50e05)}},
+         {{TOBN(0x5109b785, 0x71ba1861), TOBN(0x48b22d5c, 0xd0c8f93d),
+           TOBN(0xe8fa84a7, 0x8633bb93), TOBN(0x53fba6ba, 0x5aebbd08)},
+          {TOBN(0x7ff27df3, 0xe5eea7d8), TOBN(0x521c8796, 0x68ca7158),
+           TOBN(0xb9d5133b, 0xce6f1a05), TOBN(0x2d50cd53, 0xfd0ebee4)}},
+         {{TOBN(0xc82115d6, 0xc5a3ef16), TOBN(0x993eff9d, 0xba079221),
+           TOBN(0xe4da2c5e, 0x4b5da81c), TOBN(0x9a89dbdb, 0x8033fd85)},
+          {TOBN(0x60819ebf, 0x2b892891), TOBN(0x53902b21, 0x5d14a4d5),
+           TOBN(0x6ac35051, 0xd7fda421), TOBN(0xcc6ab885, 0x61c83284)}},
+         {{TOBN(0x14eba133, 0xf74cff17), TOBN(0x240aaa03, 0xecb813f2),
+           TOBN(0xcfbb6540, 0x6f665bee), TOBN(0x084b1fe4, 0xa425ad73)},
+          {TOBN(0x009d5d16, 0xd081f6a6), TOBN(0x35304fe8, 0xeef82c90),
+           TOBN(0xf20346d5, 0xaa9eaa22), TOBN(0x0ada9f07, 0xac1c91e3)}},
+         {{TOBN(0xa6e21678, 0x968a6144), TOBN(0x54c1f77c, 0x07b31a1e),
+           TOBN(0xd6bb787e, 0x5781fbe1), TOBN(0x61bd2ee0, 0xe31f1c4a)},
+          {TOBN(0xf25aa1e9, 0x781105fc), TOBN(0x9cf2971f, 0x7b2f8e80),
+           TOBN(0x26d15412, 0xcdff919b), TOBN(0x01db4ebe, 0x34bc896e)}},
+         {{TOBN(0x7d9b3e23, 0xb40df1cf), TOBN(0x59337373, 0x94e971b4),
+           TOBN(0xbf57bd14, 0x669cf921), TOBN(0x865daedf, 0x0c1a1064)},
+          {TOBN(0x3eb70bd3, 0x83279125), TOBN(0xbc3d5b9f, 0x34ecdaab),
+           TOBN(0x91e3ed7e, 0x5f755caf), TOBN(0x49699f54, 0xd41e6f02)}},
+         {{TOBN(0x185770e1, 0xd4a7a15b), TOBN(0x08f3587a, 0xeaac87e7),
+           TOBN(0x352018db, 0x473133ea), TOBN(0x674ce719, 0x04fd30fc)},
+          {TOBN(0x7b8d9835, 0x088b3e0e), TOBN(0x7a0356a9, 0x5d0d47a1),
+           TOBN(0x9d9e7659, 0x6474a3c4), TOBN(0x61ea48a7, 0xff66966c)}},
+         {{TOBN(0x30417758, 0x0f3e4834), TOBN(0xfdbb21c2, 0x17a9afcb),
+           TOBN(0x756fa17f, 0x2f9a67b3), TOBN(0x2a6b2421, 0xa245c1a8)},
+          {TOBN(0x64be2794, 0x4af02291), TOBN(0xade465c6, 0x2a5804fe),
+           TOBN(0x8dffbd39, 0xa6f08fd7), TOBN(0xc4efa84c, 0xaa14403b)}},
+         {{TOBN(0xa1b91b2a, 0x442b0f5c), TOBN(0xb748e317, 0xcf997736),
+           TOBN(0x8d1b62bf, 0xcee90e16), TOBN(0x907ae271, 0x0b2078c0)},
+          {TOBN(0xdf31534b, 0x0c9bcddd), TOBN(0x043fb054, 0x39adce83),
+           TOBN(0x99031043, 0xd826846a), TOBN(0x61a9c0d6, 0xb144f393)}},
+         {{TOBN(0xdab48046, 0x47718427), TOBN(0xdf17ff9b, 0x6e830f8b),
+           TOBN(0x408d7ee8, 0xe49a1347), TOBN(0x6ac71e23, 0x91c1d4ae)},
+          {TOBN(0xc8cbb9fd, 0x1defd73c), TOBN(0x19840657, 0xbbbbfec5),
+           TOBN(0x39db1cb5, 0x9e7ef8ea), TOBN(0x78aa8296, 0x64105f30)}},
+         {{TOBN(0xa3d9b7f0, 0xa3738c29), TOBN(0x0a2f235a, 0xbc3250a3),
+           TOBN(0x55e506f6, 0x445e4caf), TOBN(0x0974f73d, 0x33475f7a)},
+          {TOBN(0xd37dbba3, 0x5ba2f5a8), TOBN(0x542c6e63, 0x6af40066),
+           TOBN(0x26d99b53, 0xc5d73e2c), TOBN(0x06060d7d, 0x6c3ca33e)}},
+         {{TOBN(0xcdbef1c2, 0x065fef4a), TOBN(0x77e60f7d, 0xfd5b92e3),
+           TOBN(0xd7c549f0, 0x26708350), TOBN(0x201b3ad0, 0x34f121bf)},
+          {TOBN(0x5fcac2a1, 0x0334fc14), TOBN(0x8a9a9e09, 0x344552f6),
+           TOBN(0x7dd8a1d3, 0x97653082), TOBN(0x5fc0738f, 0x79d4f289)}},
+         {{TOBN(0x787d244d, 0x17d2d8c3), TOBN(0xeffc6345, 0x70830684),
+           TOBN(0x5ddb96dd, 0xe4f73ae5), TOBN(0x8efb14b1, 0x172549a5)},
+          {TOBN(0x6eb73eee, 0x2245ae7a), TOBN(0xbca4061e, 0xea11f13e),
+           TOBN(0xb577421d, 0x30b01f5d), TOBN(0xaa688b24, 0x782e152c)}},
+         {{TOBN(0x67608e71, 0xbd3502ba), TOBN(0x4ef41f24, 0xb4de75a0),
+           TOBN(0xb08dde5e, 0xfd6125e5), TOBN(0xde484825, 0xa409543f)},
+          {TOBN(0x1f198d98, 0x65cc2295), TOBN(0x428a3771, 0x6e0edfa2),
+           TOBN(0x4f9697a2, 0xadf35fc7), TOBN(0x01a43c79, 0xf7cac3c7)}},
+         {{TOBN(0xb05d7059, 0x0fd3659a), TOBN(0x8927f30c, 0xbb7f2d9a),
+           TOBN(0x4023d1ac, 0x8cf984d3), TOBN(0x32125ed3, 0x02897a45)},
+          {TOBN(0xfb572dad, 0x3d414205), TOBN(0x73000ef2, 0xe3fa82a9),
+           TOBN(0x4c0868e9, 0xf10a5581), TOBN(0x5b61fc67, 0x6b0b3ca5)}},
+         {{TOBN(0xc1258d5b, 0x7cae440c), TOBN(0x21c08b41, 0x402b7531),
+           TOBN(0xf61a8955, 0xde932321), TOBN(0x3568faf8, 0x2d1408af)},
+          {TOBN(0x71b15e99, 0x9ecf965b), TOBN(0xf14ed248, 0xe917276f),
+           TOBN(0xc6f4caa1, 0x820cf9e2), TOBN(0x681b20b2, 0x18d83c7e)}},
+         {{TOBN(0x6cde738d, 0xc6c01120), TOBN(0x71db0813, 0xae70e0db),
+           TOBN(0x95fc0644, 0x74afe18c), TOBN(0x34619053, 0x129e2be7)},
+          {TOBN(0x80615cea, 0xdb2a3b15), TOBN(0x0a49a19e, 0xdb4c7073),
+           TOBN(0x0e1b84c8, 0x8fd2d367), TOBN(0xd74bf462, 0x033fb8aa)}},
+         {{TOBN(0x889f6d65, 0x533ef217), TOBN(0x7158c7e4, 0xc3ca2e87),
+           TOBN(0xfb670dfb, 0xdc2b4167), TOBN(0x75910a01, 0x844c257f)},
+          {TOBN(0xf336bf07, 0xcf88577d), TOBN(0x22245250, 0xe45e2ace),
+           TOBN(0x2ed92e8d, 0x7ca23d85), TOBN(0x29f8be4c, 0x2b812f58)}},
+         {{TOBN(0xdd9ebaa7, 0x076fe12b), TOBN(0x3f2400cb, 0xae1537f9),
+           TOBN(0x1aa93528, 0x17bdfb46), TOBN(0xc0f98430, 0x67883b41)},
+          {TOBN(0x5590ede1, 0x0170911d), TOBN(0x7562f5bb, 0x34d4b17f),
+           TOBN(0xe1fa1df2, 0x1826b8d2), TOBN(0xb40b796a, 0x6bd80d59)}},
+         {{TOBN(0xd65bf197, 0x3467ba92), TOBN(0x8c9b46db, 0xf70954b0),
+           TOBN(0x97c8a0f3, 0x0e78f15d), TOBN(0xa8f3a69a, 0x85a4c961)},
+          {TOBN(0x4242660f, 0x61e4ce9b), TOBN(0xbf06aab3, 0x6ea6790c),
+           TOBN(0xc6706f8e, 0xec986416), TOBN(0x9e56dec1, 0x9a9fc225)}},
+         {{TOBN(0x527c46f4, 0x9a9898d9), TOBN(0xd799e77b, 0x5633cdef),
+           TOBN(0x24eacc16, 0x7d9e4297), TOBN(0xabb61cea, 0x6b1cb734)},
+          {TOBN(0xbee2e8a7, 0xf778443c), TOBN(0x3bb42bf1, 0x29de2fe6),
+           TOBN(0xcbed86a1, 0x3003bb6f), TOBN(0xd3918e6c, 0xd781cdf6)}},
+         {{TOBN(0x4bee3271, 0x9a5103f1), TOBN(0x5243efc6, 0xf50eac06),
+           TOBN(0xb8e122cb, 0x6adcc119), TOBN(0x1b7faa84, 0xc0b80a08)},
+          {TOBN(0x32c3d1bd, 0x6dfcd08c), TOBN(0x129dec4e, 0x0be427de),
+           TOBN(0x98ab679c, 0x1d263c83), TOBN(0xafc83cb7, 0xcef64eff)}},
+         {{TOBN(0x85eb6088, 0x2fa6be76), TOBN(0x892585fb, 0x1328cbfe),
+           TOBN(0xc154d3ed, 0xcf618dda), TOBN(0xc44f601b, 0x3abaf26e)},
+          {TOBN(0x7bf57d0b, 0x2be1fdfd), TOBN(0xa833bd2d, 0x21137fee),
+           TOBN(0x9353af36, 0x2db591a8), TOBN(0xc76f26dc, 0x5562a056)}},
+         {{TOBN(0x1d87e47d, 0x3fdf5a51), TOBN(0x7afb5f93, 0x55c9cab0),
+           TOBN(0x91bbf58f, 0x89e0586e), TOBN(0x7c72c018, 0x0d843709)},
+          {TOBN(0xa9a5aafb, 0x99b5c3dc), TOBN(0xa48a0f1d, 0x3844aeb0),
+           TOBN(0x7178b7dd, 0xb667e482), TOBN(0x453985e9, 0x6e23a59a)}},
+         {{TOBN(0x4a54c860, 0x01b25dd8), TOBN(0x0dd37f48, 0xfb897c8a),
+           TOBN(0x5f8aa610, 0x0ea90cd9), TOBN(0xc8892c68, 0x16d5830d)},
+          {TOBN(0xeb4befc0, 0xef514ca5), TOBN(0x478eb679, 0xe72c9ee6),
+           TOBN(0x9bca20da, 0xdbc40d5f), TOBN(0xf015de21, 0xdde4f64a)}},
+         {{TOBN(0xaa6a4de0, 0xeaf4b8a5), TOBN(0x68cfd9ca, 0x4bc60e32),
+           TOBN(0x668a4b01, 0x7fd15e70), TOBN(0xd9f0694a, 0xf27dc09d)},
+          {TOBN(0xf6c3cad5, 0xba708bcd), TOBN(0x5cd2ba69, 0x5bb95c2a),
+           TOBN(0xaa28c1d3, 0x33c0a58f), TOBN(0x23e274e3, 0xabc77870)}},
+         {{TOBN(0x44c3692d, 0xdfd20a4a), TOBN(0x091c5fd3, 0x81a66653),
+           TOBN(0x6c0bb691, 0x09a0757d), TOBN(0x9072e8b9, 0x667343ea)},
+          {TOBN(0x31d40eb0, 0x80848bec), TOBN(0x95bd480a, 0x79fd36cc),
+           TOBN(0x01a77c61, 0x65ed43f5), TOBN(0xafccd127, 0x2e0d40bf)}},
+         {{TOBN(0xeccfc82d, 0x1cc1884b), TOBN(0xc85ac201, 0x5d4753b4),
+           TOBN(0xc7a6caac, 0x658e099f), TOBN(0xcf46369e, 0x04b27390)},
+          {TOBN(0xe2e7d049, 0x506467ea), TOBN(0x481b63a2, 0x37cdeccc),
+           TOBN(0x4029abd8, 0xed80143a), TOBN(0x28bfe3c7, 0xbcb00b88)}},
+         {{TOBN(0x3bec1009, 0x0643d84a), TOBN(0x885f3668, 0xabd11041),
+           TOBN(0xdb02432c, 0xf83a34d6), TOBN(0x32f7b360, 0x719ceebe)},
+          {TOBN(0xf06c7837, 0xdad1fe7a), TOBN(0x60a157a9, 0x5441a0b0),
+           TOBN(0x704970e9, 0xe2d47550), TOBN(0xcd2bd553, 0x271b9020)}},
+         {{TOBN(0xff57f82f, 0x33e24a0b), TOBN(0x9cbee23f, 0xf2565079),
+           TOBN(0x16353427, 0xeb5f5825), TOBN(0x276feec4, 0xe948d662)},
+          {TOBN(0xd1b62bc6, 0xda10032b), TOBN(0x718351dd, 0xf0e72a53),
+           TOBN(0x93452076, 0x2420e7ba), TOBN(0x96368fff, 0x3a00118d)}},
+         {{TOBN(0x00ce2d26, 0x150a49e4), TOBN(0x0c28b636, 0x3f04706b),
+           TOBN(0xbad65a46, 0x58b196d0), TOBN(0x6c8455fc, 0xec9f8b7c)},
+          {TOBN(0xe90c895f, 0x2d71867e), TOBN(0x5c0be31b, 0xedf9f38c),
+           TOBN(0x2a37a15e, 0xd8f6ec04), TOBN(0x239639e7, 0x8cd85251)}},
+         {{TOBN(0xd8975315, 0x9c7c4c6b), TOBN(0x603aa3c0, 0xd7409af7),
+           TOBN(0xb8d53d0c, 0x007132fb), TOBN(0x68d12af7, 0xa6849238)},
+          {TOBN(0xbe0607e7, 0xbf5d9279), TOBN(0x9aa50055, 0xaada74ce),
+           TOBN(0xe81079cb, 0xba7e8ccb), TOBN(0x610c71d1, 0xa5f4ff5e)}},
+         {{TOBN(0x9e2ee1a7, 0x5aa07093), TOBN(0xca84004b, 0xa75da47c),
+           TOBN(0x074d3951, 0x3de75401), TOBN(0xf938f756, 0xbb311592)},
+          {TOBN(0x96197618, 0x00a43421), TOBN(0x39a25362, 0x07bc78c8),
+           TOBN(0x278f710a, 0x0a171276), TOBN(0xb28446ea, 0x8d1a8f08)}},
+         {{TOBN(0x184781bf, 0xe3b6a661), TOBN(0x7751cb1d, 0xe6d279f7),
+           TOBN(0xf8ff95d6, 0xc59eb662), TOBN(0x186d90b7, 0x58d3dea7)},
+          {TOBN(0x0e4bb6c1, 0xdfb4f754), TOBN(0x5c5cf56b, 0x2b2801dc),
+           TOBN(0xc561e452, 0x1f54564d), TOBN(0xb4fb8c60, 0xf0dd7f13)}},
+         {{TOBN(0xf8849630, 0x33ff98c7), TOBN(0x9619fffa, 0xcf17769c),
+           TOBN(0xf8090bf6, 0x1bfdd80a), TOBN(0x14d9a149, 0x422cfe63)},
+          {TOBN(0xb354c360, 0x6f6df9ea), TOBN(0xdbcf770d, 0x218f17ea),
+           TOBN(0x207db7c8, 0x79eb3480), TOBN(0x213dbda8, 0x559b6a26)}},
+         {{TOBN(0xac4c200b, 0x29fc81b3), TOBN(0xebc3e09f, 0x171d87c1),
+           TOBN(0x91799530, 0x1481aa9e), TOBN(0x051b92e1, 0x92e114fa)},
+          {TOBN(0xdf8f92e9, 0xecb5537f), TOBN(0x44b1b2cc, 0x290c7483),
+           TOBN(0xa711455a, 0x2adeb016), TOBN(0x964b6856, 0x81a10c2c)}},
+         {{TOBN(0x4f159d99, 0xcec03623), TOBN(0x05532225, 0xef3271ea),
+           TOBN(0xb231bea3, 0xc5ee4849), TOBN(0x57a54f50, 0x7094f103)},
+          {TOBN(0x3e2d421d, 0x9598b352), TOBN(0xe865a49c, 0x67412ab4),
+           TOBN(0xd2998a25, 0x1cc3a912), TOBN(0x5d092808, 0x0c74d65d)}},
+         {{TOBN(0x73f45908, 0x4088567a), TOBN(0xeb6b280e, 0x1f214a61),
+           TOBN(0x8c9adc34, 0xcaf0c13d), TOBN(0x39d12938, 0xf561fb80)},
+          {TOBN(0xb2dc3a5e, 0xbc6edfb4), TOBN(0x7485b1b1, 0xfe4d210e),
+           TOBN(0x062e0400, 0xe186ae72), TOBN(0x91e32d5c, 0x6eeb3b88)}},
+         {{TOBN(0x6df574d7, 0x4be59224), TOBN(0xebc88ccc, 0x716d55f3),
+           TOBN(0x26c2e6d0, 0xcad6ed33), TOBN(0xc6e21e7d, 0x0d3e8b10)},
+          {TOBN(0x2cc5840e, 0x5bcc36bb), TOBN(0x9292445e, 0x7da74f69),
+           TOBN(0x8be8d321, 0x4e5193a8), TOBN(0x3ec23629, 0x8df06413)}},
+         {{TOBN(0xc7e9ae85, 0xb134defa), TOBN(0x6073b1d0, 0x1bb2d475),
+           TOBN(0xb9ad615e, 0x2863c00d), TOBN(0x9e29493d, 0x525f4ac4)},
+          {TOBN(0xc32b1dea, 0x4e9acf4f), TOBN(0x3e1f01c8, 0xa50db88d),
+           TOBN(0xb05d70ea, 0x04da916c), TOBN(0x714b0d0a, 0xd865803e)}},
+         {{TOBN(0x4bd493fc, 0x9920cb5e), TOBN(0x5b44b1f7, 0x92c7a3ac),
+           TOBN(0xa2a77293, 0xbcec9235), TOBN(0x5ee06e87, 0xcd378553)},
+          {TOBN(0xceff8173, 0xda621607), TOBN(0x2bb03e4c, 0x99f5d290),
+           TOBN(0x2945106a, 0xa6f734ac), TOBN(0xb5056604, 0xd25c4732)}},
+         {{TOBN(0x5945920c, 0xe079afee), TOBN(0x686e17a0, 0x6789831f),
+           TOBN(0x5966bee8, 0xb74a5ae5), TOBN(0x38a673a2, 0x1e258d46)},
+          {TOBN(0xbd1cc1f2, 0x83141c95), TOBN(0x3b2ecf4f, 0x0e96e486),
+           TOBN(0xcd3aa896, 0x74e5fc78), TOBN(0x415ec10c, 0x2482fa7a)}},
+         {{TOBN(0x15234419, 0x80503380), TOBN(0x513d917a, 0xd314b392),
+           TOBN(0xb0b52f4e, 0x63caecae), TOBN(0x07bf22ad, 0x2dc7780b)},
+          {TOBN(0xe761e8a1, 0xe4306839), TOBN(0x1b3be962, 0x5dd7feaa),
+           TOBN(0x4fe728de, 0x74c778f1), TOBN(0xf1fa0bda, 0x5e0070f6)}},
+         {{TOBN(0x85205a31, 0x6ec3f510), TOBN(0x2c7e4a14, 0xd2980475),
+           TOBN(0xde3c19c0, 0x6f30ebfd), TOBN(0xdb1c1f38, 0xd4b7e644)},
+          {TOBN(0xfe291a75, 0x5dce364a), TOBN(0xb7b22a3c, 0x058f5be3),
+           TOBN(0x2cd2c302, 0x37fea38c), TOBN(0x2930967a, 0x2e17be17)}},
+         {{TOBN(0x87f009de, 0x0c061c65), TOBN(0xcb014aac, 0xedc6ed44),
+           TOBN(0x49bd1cb4, 0x3bafb1eb), TOBN(0x81bd8b5c, 0x282d3688)},
+          {TOBN(0x1cdab87e, 0xf01a17af), TOBN(0x21f37ac4, 0xe710063b),
+           TOBN(0x5a6c5676, 0x42fc8193), TOBN(0xf4753e70, 0x56a6015c)}},
+         {{TOBN(0x020f795e, 0xa15b0a44), TOBN(0x8f37c8d7, 0x8958a958),
+           TOBN(0x63b7e89b, 0xa4b675b5), TOBN(0xb4fb0c0c, 0x0fc31aea)},
+          {TOBN(0xed95e639, 0xa7ff1f2e), TOBN(0x9880f5a3, 0x619614fb),
+           TOBN(0xdeb6ff02, 0x947151ab), TOBN(0x5bc5118c, 0xa868dcdb)}},
+         {{TOBN(0xd8da2055, 0x4c20cea5), TOBN(0xcac2776e, 0x14c4d69a),
+           TOBN(0xcccb22c1, 0x622d599b), TOBN(0xa4ddb653, 0x68a9bb50)},
+          {TOBN(0x2c4ff151, 0x1b4941b4), TOBN(0xe1ff19b4, 0x6efba588),
+           TOBN(0x35034363, 0xc48345e0), TOBN(0x45542e3d, 0x1e29dfc4)}},
+         {{TOBN(0xf197cb91, 0x349f7aed), TOBN(0x3b2b5a00, 0x8fca8420),
+           TOBN(0x7c175ee8, 0x23aaf6d8), TOBN(0x54dcf421, 0x35af32b6)},
+          {TOBN(0x0ba14307, 0x27d6561e), TOBN(0x879d5ee4, 0xd175b1e2),
+           TOBN(0xc7c43673, 0x99807db5), TOBN(0x77a54455, 0x9cd55bcd)}},
+         {{TOBN(0xe6c2ff13, 0x0105c072), TOBN(0x18f7a99f, 0x8dda7da4),
+           TOBN(0x4c301820, 0x0e2d35c1), TOBN(0x06a53ca0, 0xd9cc6c82)},
+          {TOBN(0xaa21cc1e, 0xf1aa1d9e), TOBN(0x32414334, 0x4a75b1e8),
+           TOBN(0x2a6d1328, 0x0ebe9fdc), TOBN(0x16bd173f, 0x98a4755a)}},
+         {{TOBN(0xfbb9b245, 0x2133ffd9), TOBN(0x39a8b2f1, 0x830f1a20),
+           TOBN(0x484bc97d, 0xd5a1f52a), TOBN(0xd6aebf56, 0xa40eddf8)},
+          {TOBN(0x32257acb, 0x76ccdac6), TOBN(0xaf4d36ec, 0x1586ff27),
+           TOBN(0x8eaa8863, 0xf8de7dd1), TOBN(0x0045d5cf, 0x88647c16)}}},
+        {{{TOBN(0xa6f3d574, 0xc005979d), TOBN(0xc2072b42, 0x6a40e350),
+           TOBN(0xfca5c156, 0x8de2ecf9), TOBN(0xa8c8bf5b, 0xa515344e)},
+          {TOBN(0x97aee555, 0x114df14a), TOBN(0xd4374a4d, 0xfdc5ec6b),
+           TOBN(0x754cc28f, 0x2ca85418), TOBN(0x71cb9e27, 0xd3c41f78)}},
+         {{TOBN(0x89105079, 0x03605c39), TOBN(0xf0843d9e, 0xa142c96c),
+           TOBN(0xf3744934, 0x16923684), TOBN(0x732caa2f, 0xfa0a2893)},
+          {TOBN(0xb2e8c270, 0x61160170), TOBN(0xc32788cc, 0x437fbaa3),
+           TOBN(0x39cd818e, 0xa6eda3ac), TOBN(0xe2e94239, 0x9e2b2e07)}},
+         {{TOBN(0x6967d39b, 0x0260e52a), TOBN(0xd42585cc, 0x90653325),
+           TOBN(0x0d9bd605, 0x21ca7954), TOBN(0x4fa20877, 0x81ed57b3)},
+          {TOBN(0x60c1eff8, 0xe34a0bbe), TOBN(0x56b0040c, 0x84f6ef64),
+           TOBN(0x28be2b24, 0xb1af8483), TOBN(0xb2278163, 0xf5531614)}},
+         {{TOBN(0x8df27545, 0x5922ac1c), TOBN(0xa7b3ef5c, 0xa52b3f63),
+           TOBN(0x8e77b214, 0x71de57c4), TOBN(0x31682c10, 0x834c008b)},
+          {TOBN(0xc76824f0, 0x4bd55d31), TOBN(0xb6d1c086, 0x17b61c71),
+           TOBN(0x31db0903, 0xc2a5089d), TOBN(0x9c092172, 0x184e5d3f)}},
+         {{TOBN(0xdd7ced5b, 0xc00cc638), TOBN(0x1a2015eb, 0x61278fc2),
+           TOBN(0x2e8e5288, 0x6a37f8d6), TOBN(0xc457786f, 0xe79933ad)},
+          {TOBN(0xb3fe4cce, 0x2c51211a), TOBN(0xad9b10b2, 0x24c20498),
+           TOBN(0x90d87a4f, 0xd28db5e5), TOBN(0x698cd105, 0x3aca2fc3)}},
+         {{TOBN(0x4f112d07, 0xe91b536d), TOBN(0xceb982f2, 0x9eba09d6),
+           TOBN(0x3c157b2c, 0x197c396f), TOBN(0xe23c2d41, 0x7b66eb24)},
+          {TOBN(0x480c57d9, 0x3f330d37), TOBN(0xb3a4c8a1, 0x79108deb),
+           TOBN(0x702388de, 0xcb199ce5), TOBN(0x0b019211, 0xb944a8d4)}},
+         {{TOBN(0x24f2a692, 0x840bb336), TOBN(0x7c353bdc, 0xa669fa7b),
+           TOBN(0xda20d6fc, 0xdec9c300), TOBN(0x625fbe2f, 0xa13a4f17)},
+          {TOBN(0xa2b1b61a, 0xdbc17328), TOBN(0x008965bf, 0xa9515621),
+           TOBN(0x49690939, 0xc620ff46), TOBN(0x182dd27d, 0x8717e91c)}},
+         {{TOBN(0x5ace5035, 0xea6c3997), TOBN(0x54259aaa, 0xc2610bef),
+           TOBN(0xef18bb3f, 0x3c80dd39), TOBN(0x6910b95b, 0x5fc3fa39)},
+          {TOBN(0xfce2f510, 0x43e09aee), TOBN(0xced56c9f, 0xa7675665),
+           TOBN(0x10e265ac, 0xd872db61), TOBN(0x6982812e, 0xae9fce69)}},
+         {{TOBN(0x29be11c6, 0xce800998), TOBN(0x72bb1752, 0xb90360d9),
+           TOBN(0x2c193197, 0x5a4ad590), TOBN(0x2ba2f548, 0x9fc1dbc0)},
+          {TOBN(0x7fe4eebb, 0xe490ebe0), TOBN(0x12a0a4cd, 0x7fae11c0),
+           TOBN(0x7197cf81, 0xe903ba37), TOBN(0xcf7d4aa8, 0xde1c6dd8)}},
+         {{TOBN(0x92af6bf4, 0x3fd5684c), TOBN(0x2b26eecf, 0x80360aa1),
+           TOBN(0xbd960f30, 0x00546a82), TOBN(0x407b3c43, 0xf59ad8fe)},
+          {TOBN(0x86cae5fe, 0x249c82ba), TOBN(0x9e0faec7, 0x2463744c),
+           TOBN(0x87f551e8, 0x94916272), TOBN(0x033f9344, 0x6ceb0615)}},
+         {{TOBN(0x1e5eb0d1, 0x8be82e84), TOBN(0x89967f0e, 0x7a582fef),
+           TOBN(0xbcf687d5, 0xa6e921fa), TOBN(0xdfee4cf3, 0xd37a09ba)},
+          {TOBN(0x94f06965, 0xb493c465), TOBN(0x638b9a1c, 0x7635c030),
+           TOBN(0x76667864, 0x66f05e9f), TOBN(0xccaf6808, 0xc04da725)}},
+         {{TOBN(0xca2eb690, 0x768fccfc), TOBN(0xf402d37d, 0xb835b362),
+           TOBN(0x0efac0d0, 0xe2fdfcce), TOBN(0xefc9cdef, 0xb638d990)},
+          {TOBN(0x2af12b72, 0xd1669a8b), TOBN(0x33c536bc, 0x5774ccbd),
+           TOBN(0x30b21909, 0xfb34870e), TOBN(0xc38fa2f7, 0x7df25aca)}},
+         {{TOBN(0x74c5f02b, 0xbf81f3f5), TOBN(0x0525a5ae, 0xaf7e4581),
+           TOBN(0x88d2aaba, 0x433c54ae), TOBN(0xed9775db, 0x806a56c5)},
+          {TOBN(0xd320738a, 0xc0edb37d), TOBN(0x25fdb6ee, 0x66cc1f51),
+           TOBN(0xac661d17, 0x10600d76), TOBN(0x931ec1f3, 0xbdd1ed76)}},
+         {{TOBN(0x65c11d62, 0x19ee43f1), TOBN(0x5cd57c3e, 0x60829d97),
+           TOBN(0xd26c91a3, 0x984be6e8), TOBN(0xf08d9309, 0x8b0c53bd)},
+          {TOBN(0x94bc9e5b, 0xc016e4ea), TOBN(0xd3916839, 0x11d43d2b),
+           TOBN(0x886c5ad7, 0x73701155), TOBN(0xe0377626, 0x20b00715)}},
+         {{TOBN(0x7f01c9ec, 0xaa80ba59), TOBN(0x3083411a, 0x68538e51),
+           TOBN(0x970370f1, 0xe88128af), TOBN(0x625cc3db, 0x91dec14b)},
+          {TOBN(0xfef9666c, 0x01ac3107), TOBN(0xb2a8d577, 0xd5057ac3),
+           TOBN(0xb0f26299, 0x92be5df7), TOBN(0xf579c8e5, 0x00353924)}},
+         {{TOBN(0xb8fa3d93, 0x1341ed7a), TOBN(0x4223272c, 0xa7b59d49),
+           TOBN(0x3dcb1947, 0x83b8c4a4), TOBN(0x4e413c01, 0xed1302e4)},
+          {TOBN(0x6d999127, 0xe17e44ce), TOBN(0xee86bf75, 0x33b3adfb),
+           TOBN(0xf6902fe6, 0x25aa96ca), TOBN(0xb73540e4, 0xe5aae47d)}},
+         {{TOBN(0x32801d7b, 0x1b4a158c), TOBN(0xe571c99e, 0x27e2a369),
+           TOBN(0x40cb76c0, 0x10d9f197), TOBN(0xc308c289, 0x3167c0ae)},
+          {TOBN(0xa6ef9dd3, 0xeb7958f2), TOBN(0xa7226dfc, 0x300879b1),
+           TOBN(0x6cd0b362, 0x7edf0636), TOBN(0x4efbce6c, 0x7bc37eed)}},
+         {{TOBN(0x75f92a05, 0x8d699021), TOBN(0x586d4c79, 0x772566e3),
+           TOBN(0x378ca5f1, 0x761ad23a), TOBN(0x650d86fc, 0x1465a8ac)},
+          {TOBN(0x7a4ed457, 0x842ba251), TOBN(0x6b65e3e6, 0x42234933),
+           TOBN(0xaf1543b7, 0x31aad657), TOBN(0xa4cefe98, 0xcbfec369)}},
+         {{TOBN(0xb587da90, 0x9f47befb), TOBN(0x6562e9fb, 0x41312d13),
+           TOBN(0xa691ea59, 0xeff1cefe), TOBN(0xcc30477a, 0x05fc4cf6)},
+          {TOBN(0xa1632461, 0x0b0ffd3d), TOBN(0xa1f16f3b, 0x5b355956),
+           TOBN(0x5b148d53, 0x4224ec24), TOBN(0xdc834e7b, 0xf977012a)}},
+         {{TOBN(0x7bfc5e75, 0xb2c69dbc), TOBN(0x3aa77a29, 0x03c3da6c),
+           TOBN(0xde0df03c, 0xca910271), TOBN(0xcbd5ca4a, 0x7806dc55)},
+          {TOBN(0xe1ca5807, 0x6db476cb), TOBN(0xfde15d62, 0x5f37a31e),
+           TOBN(0xf49af520, 0xf41af416), TOBN(0x96c5c5b1, 0x7d342db5)}},
+         {{TOBN(0x155c43b7, 0xeb4ceb9b), TOBN(0x2e993010, 0x4e77371a),
+           TOBN(0x1d2987da, 0x675d43af), TOBN(0xef2bc1c0, 0x8599fd72)},
+          {TOBN(0x96894b7b, 0x9342f6b2), TOBN(0x201eadf2, 0x7c8e71f0),
+           TOBN(0xf3479d9f, 0x4a1f3efc), TOBN(0xe0f8a742, 0x702a9704)}},
+         {{TOBN(0xeafd44b6, 0xb3eba40c), TOBN(0xf9739f29, 0xc1c1e0d0),
+           TOBN(0x0091471a, 0x619d505e), TOBN(0xc15f9c96, 0x9d7c263e)},
+          {TOBN(0x5be47285, 0x83afbe33), TOBN(0xa3b6d6af, 0x04f1e092),
+           TOBN(0xe76526b9, 0x751a9d11), TOBN(0x2ec5b26d, 0x9a4ae4d2)}},
+         {{TOBN(0xeb66f4d9, 0x02f6fb8d), TOBN(0x4063c561, 0x96912164),
+           TOBN(0xeb7050c1, 0x80ef3000), TOBN(0x288d1c33, 0xeaa5b3f0)},
+          {TOBN(0xe87c68d6, 0x07806fd8), TOBN(0xb2f7f9d5, 0x4bbbf50f),
+           TOBN(0x25972f3a, 0xac8d6627), TOBN(0xf8547774, 0x10e8c13b)}},
+         {{TOBN(0xcc50ef6c, 0x872b4a60), TOBN(0xab2a34a4, 0x4613521b),
+           TOBN(0x39c5c190, 0x983e15d1), TOBN(0x61dde5df, 0x59905512)},
+          {TOBN(0xe417f621, 0x9f2275f3), TOBN(0x0750c8b6, 0x451d894b),
+           TOBN(0x75b04ab9, 0x78b0bdaa), TOBN(0x3bfd9fd4, 0x458589bd)}},
+         {{TOBN(0xf1013e30, 0xee9120b6), TOBN(0x2b51af93, 0x23a4743e),
+           TOBN(0xea96ffae, 0x48d14d9e), TOBN(0x71dc0dbe, 0x698a1d32)},
+          {TOBN(0x914962d2, 0x0180cca4), TOBN(0x1ae60677, 0xc3568963),
+           TOBN(0x8cf227b1, 0x437bc444), TOBN(0xc650c83b, 0xc9962c7a)}},
+         {{TOBN(0x23c2c7dd, 0xfe7ccfc4), TOBN(0xf925c89d, 0x1b929d48),
+           TOBN(0x4460f74b, 0x06783c33), TOBN(0xac2c8d49, 0xa590475a)},
+          {TOBN(0xfb40b407, 0xb807bba0), TOBN(0x9d1e362d, 0x69ff8f3a),
+           TOBN(0xa33e9681, 0xcbef64a4), TOBN(0x67ece5fa, 0x332fb4b2)}},
+         {{TOBN(0x6900a99b, 0x739f10e3), TOBN(0xc3341ca9, 0xff525925),
+           TOBN(0xee18a626, 0xa9e2d041), TOBN(0xa5a83685, 0x29580ddd)},
+          {TOBN(0xf3470c81, 0x9d7de3cd), TOBN(0xedf02586, 0x2062cf9c),
+           TOBN(0xf43522fa, 0xc010edb0), TOBN(0x30314135, 0x13a4b1ae)}},
+         {{TOBN(0xc792e02a, 0xdb22b94b), TOBN(0x993d8ae9, 0xa1eaa45b),
+           TOBN(0x8aad6cd3, 0xcd1e1c63), TOBN(0x89529ca7, 0xc5ce688a)},
+          {TOBN(0x2ccee3aa, 0xe572a253), TOBN(0xe02b6438, 0x02a21efb),
+           TOBN(0xa7091b6e, 0xc9430358), TOBN(0x06d1b1fa, 0x9d7db504)}},
+         {{TOBN(0x58846d32, 0xc4744733), TOBN(0x40517c71, 0x379f9e34),
+           TOBN(0x2f65655f, 0x130ef6ca), TOBN(0x526e4488, 0xf1f3503f)},
+          {TOBN(0x8467bd17, 0x7ee4a976), TOBN(0x1d9dc913, 0x921363d1),
+           TOBN(0xd8d24c33, 0xb069e041), TOBN(0x5eb5da0a, 0x2cdf7f51)}},
+         {{TOBN(0x1c0f3cb1, 0x197b994f), TOBN(0x3c95a6c5, 0x2843eae9),
+           TOBN(0x7766ffc9, 0xa6097ea5), TOBN(0x7bea4093, 0xd723b867)},
+          {TOBN(0xb48e1f73, 0x4db378f9), TOBN(0x70025b00, 0xe37b77ac),
+           TOBN(0x943dc8e7, 0xaf24ad46), TOBN(0xb98a15ac, 0x16d00a85)}},
+         {{TOBN(0x3adc38ba, 0x2743b004), TOBN(0xb1c7f4f7, 0x334415ee),
+           TOBN(0xea43df8f, 0x1e62d05a), TOBN(0x32618905, 0x9d76a3b6)},
+          {TOBN(0x2fbd0bb5, 0xa23a0f46), TOBN(0x5bc971db, 0x6a01918c),
+           TOBN(0x7801d94a, 0xb4743f94), TOBN(0xb94df65e, 0x676ae22b)}},
+         {{TOBN(0xaafcbfab, 0xaf95894c), TOBN(0x7b9bdc07, 0x276b2241),
+           TOBN(0xeaf98362, 0x5bdda48b), TOBN(0x5977faf2, 0xa3fcb4df)},
+          {TOBN(0xbed042ef, 0x052c4b5b), TOBN(0x9fe87f71, 0x067591f0),
+           TOBN(0xc89c73ca, 0x22f24ec7), TOBN(0x7d37fa9e, 0xe64a9f1b)}},
+         {{TOBN(0x2710841a, 0x15562627), TOBN(0x2c01a613, 0xc243b034),
+           TOBN(0x1d135c56, 0x2bc68609), TOBN(0xc2ca1715, 0x8b03f1f6)},
+          {TOBN(0xc9966c2d, 0x3eb81d82), TOBN(0xc02abf4a, 0x8f6df13e),
+           TOBN(0x77b34bd7, 0x8f72b43b), TOBN(0xaff6218f, 0x360c82b0)}},
+         {{TOBN(0x0aa5726c, 0x8d55b9d2), TOBN(0xdc0adbe9, 0x99e9bffb),
+           TOBN(0x9097549c, 0xefb9e72a), TOBN(0x16755712, 0x9dfb3111)},
+          {TOBN(0xdd8bf984, 0xf26847f9), TOBN(0xbcb8e387, 0xdfb30cb7),
+           TOBN(0xc1fd32a7, 0x5171ef9c), TOBN(0x977f3fc7, 0x389b363f)}},
+         {{TOBN(0x116eaf2b, 0xf4babda0), TOBN(0xfeab68bd, 0xf7113c8e),
+           TOBN(0xd1e3f064, 0xb7def526), TOBN(0x1ac30885, 0xe0b3fa02)},
+          {TOBN(0x1c5a6e7b, 0x40142d9d), TOBN(0x839b5603, 0x30921c0b),
+           TOBN(0x48f301fa, 0x36a116a3), TOBN(0x380e1107, 0xcfd9ee6d)}},
+         {{TOBN(0x7945ead8, 0x58854be1), TOBN(0x4111c12e, 0xcbd4d49d),
+           TOBN(0xece3b1ec, 0x3a29c2ef), TOBN(0x6356d404, 0x8d3616f5)},
+          {TOBN(0x9f0d6a8f, 0x594d320e), TOBN(0x0989316d, 0xf651ccd2),
+           TOBN(0x6c32117a, 0x0f8fdde4), TOBN(0x9abe5cc5, 0xa26a9bbc)}},
+         {{TOBN(0xcff560fb, 0x9723f671), TOBN(0x21b2a12d, 0x7f3d593c),
+           TOBN(0xe4cb18da, 0x24ba0696), TOBN(0x186e2220, 0xc3543384)},
+          {TOBN(0x722f64e0, 0x88312c29), TOBN(0x94282a99, 0x17dc7752),
+           TOBN(0x62467bbf, 0x5a85ee89), TOBN(0xf435c650, 0xf10076a0)}},
+         {{TOBN(0xc9ff1539, 0x43b3a50b), TOBN(0x7132130c, 0x1a53efbc),
+           TOBN(0x31bfe063, 0xf7b0c5b7), TOBN(0xb0179a7d, 0x4ea994cc)},
+          {TOBN(0x12d064b3, 0xc85f455b), TOBN(0x47259328, 0x8f6e0062),
+           TOBN(0xf64e590b, 0xb875d6d9), TOBN(0x22dd6225, 0xad92bcc7)}},
+         {{TOBN(0xb658038e, 0xb9c3bd6d), TOBN(0x00cdb0d6, 0xfbba27c8),
+           TOBN(0x0c681337, 0x1062c45d), TOBN(0xd8515b8c, 0x2d33407d)},
+          {TOBN(0xcb8f699e, 0x8cbb5ecf), TOBN(0x8c4347f8, 0xc608d7d8),
+           TOBN(0x2c11850a, 0xbb3e00db), TOBN(0x20a8dafd, 0xecb49d19)}},
+         {{TOBN(0xbd781480, 0x45ee2f40), TOBN(0x75e354af, 0x416b60cf),
+           TOBN(0xde0b58a1, 0x8d49a8c4), TOBN(0xe40e94e2, 0xfa359536)},
+          {TOBN(0xbd4fa59f, 0x62accd76), TOBN(0x05cf466a, 0x8c762837),
+           TOBN(0xb5abda99, 0x448c277b), TOBN(0x5a9e01bf, 0x48b13740)}},
+         {{TOBN(0x9d457798, 0x326aad8d), TOBN(0xbdef4954, 0xc396f7e7),
+           TOBN(0x6fb274a2, 0xc253e292), TOBN(0x2800bf0a, 0x1cfe53e7)},
+          {TOBN(0x22426d31, 0x44438fd4), TOBN(0xef233923, 0x5e259f9a),
+           TOBN(0x4188503c, 0x03f66264), TOBN(0x9e5e7f13, 0x7f9fdfab)}},
+         {{TOBN(0x565eb76c, 0x5fcc1aba), TOBN(0xea632548, 0x59b5bff8),
+           TOBN(0x5587c087, 0xaab6d3fa), TOBN(0x92b639ea, 0x6ce39c1b)},
+          {TOBN(0x0706e782, 0x953b135c), TOBN(0x7308912e, 0x425268ef),
+           TOBN(0x599e92c7, 0x090e7469), TOBN(0x83b90f52, 0x9bc35e75)}},
+         {{TOBN(0x4750b3d0, 0x244975b3), TOBN(0xf3a44358, 0x11965d72),
+           TOBN(0x179c6774, 0x9c8dc751), TOBN(0xff18cdfe, 0xd23d9ff0)},
+          {TOBN(0xc4013833, 0x2028e247), TOBN(0x96e280e2, 0xf3bfbc79),
+           TOBN(0xf60417bd, 0xd0880a84), TOBN(0x263c9f3d, 0x2a568151)}},
+         {{TOBN(0x36be15b3, 0x2d2ce811), TOBN(0x846dc0c2, 0xf8291d21),
+           TOBN(0x5cfa0ecb, 0x789fcfdb), TOBN(0x45a0beed, 0xd7535b9a)},
+          {TOBN(0xec8e9f07, 0x96d69af1), TOBN(0x31a7c5b8, 0x599ab6dc),
+           TOBN(0xd36d45ef, 0xf9e2e09f), TOBN(0x3cf49ef1, 0xdcee954b)}},
+         {{TOBN(0x6be34cf3, 0x086cff9b), TOBN(0x88dbd491, 0x39a3360f),
+           TOBN(0x1e96b8cc, 0x0dbfbd1d), TOBN(0xc1e5f7bf, 0xcb7e2552)},
+          {TOBN(0x0547b214, 0x28819d98), TOBN(0xc770dd9c, 0x7aea9dcb),
+           TOBN(0xaef0d4c7, 0x041d68c8), TOBN(0xcc2b9818, 0x13cb9ba8)}},
+         {{TOBN(0x7fc7bc76, 0xfe86c607), TOBN(0x6b7b9337, 0x502a9a95),
+           TOBN(0x1948dc27, 0xd14dab63), TOBN(0x249dd198, 0xdae047be)},
+          {TOBN(0xe8356584, 0xa981a202), TOBN(0x3531dd18, 0x3a893387),
+           TOBN(0x1be11f90, 0xc85c7209), TOBN(0x93d2fe1e, 0xe2a52b5a)}},
+         {{TOBN(0x8225bfe2, 0xec6d6b97), TOBN(0x9cf6d6f4, 0xbd0aa5de),
+           TOBN(0x911459cb, 0x54779f5f), TOBN(0x5649cddb, 0x86aeb1f3)},
+          {TOBN(0x32133579, 0x3f26ce5a), TOBN(0xc289a102, 0x550f431e),
+           TOBN(0x559dcfda, 0x73b84c6f), TOBN(0x84973819, 0xee3ac4d7)}},
+         {{TOBN(0xb51e55e6, 0xf2606a82), TOBN(0xe25f7061, 0x90f2fb57),
+           TOBN(0xacef6c2a, 0xb1a4e37c), TOBN(0x864e359d, 0x5dcf2706)},
+          {TOBN(0x479e6b18, 0x7ce57316), TOBN(0x2cab2500, 0x3a96b23d),
+           TOBN(0xed489862, 0x8ef16df7), TOBN(0x2056538c, 0xef3758b5)}},
+         {{TOBN(0xa7df865e, 0xf15d3101), TOBN(0x80c5533a, 0x61b553d7),
+           TOBN(0x366e1997, 0x4ed14294), TOBN(0x6620741f, 0xb3c0bcd6)},
+          {TOBN(0x21d1d9c4, 0xedc45418), TOBN(0x005b859e, 0xc1cc4a9d),
+           TOBN(0xdf01f630, 0xa1c462f0), TOBN(0x15d06cf3, 0xf26820c7)}},
+         {{TOBN(0x9f7f24ee, 0x3484be47), TOBN(0x2ff33e96, 0x4a0c902f),
+           TOBN(0x00bdf457, 0x5a0bc453), TOBN(0x2378dfaf, 0x1aa238db)},
+          {TOBN(0x272420ec, 0x856720f2), TOBN(0x2ad9d95b, 0x96797291),
+           TOBN(0xd1242cc6, 0x768a1558), TOBN(0x2e287f8b, 0x5cc86aa8)}},
+         {{TOBN(0x796873d0, 0x990cecaa), TOBN(0xade55f81, 0x675d4080),
+           TOBN(0x2645eea3, 0x21f0cd84), TOBN(0x7a1efa0f, 0xb4e17d02)},
+          {TOBN(0xf6858420, 0x037cc061), TOBN(0x682e05f0, 0xd5d43e12),
+           TOBN(0x59c36994, 0x27218710), TOBN(0x85cbba4d, 0x3f7cd2fc)}},
+         {{TOBN(0x726f9729, 0x7a3cd22a), TOBN(0x9f8cd5dc, 0x4a628397),
+           TOBN(0x17b93ab9, 0xc23165ed), TOBN(0xff5f5dbf, 0x122823d4)},
+          {TOBN(0xc1e4e4b5, 0x654a446d), TOBN(0xd1a9496f, 0x677257ba),
+           TOBN(0x6387ba94, 0xde766a56), TOBN(0x23608bc8, 0x521ec74a)}},
+         {{TOBN(0x16a522d7, 0x6688c4d4), TOBN(0x9d6b4282, 0x07373abd),
+           TOBN(0xa62f07ac, 0xb42efaa3), TOBN(0xf73e00f7, 0xe3b90180)},
+          {TOBN(0x36175fec, 0x49421c3e), TOBN(0xc4e44f9b, 0x3dcf2678),
+           TOBN(0x76df436b, 0x7220f09f), TOBN(0x172755fb, 0x3aa8b6cf)}},
+         {{TOBN(0xbab89d57, 0x446139cc), TOBN(0x0a0a6e02, 0x5fe0208f),
+           TOBN(0xcdbb63e2, 0x11e5d399), TOBN(0x33ecaa12, 0xa8977f0b)},
+          {TOBN(0x59598b21, 0xf7c42664), TOBN(0xb3e91b32, 0xab65d08a),
+           TOBN(0x035822ee, 0xf4502526), TOBN(0x1dcf0176, 0x720a82a9)}},
+         {{TOBN(0x50f8598f, 0x3d589e02), TOBN(0xdf0478ff, 0xb1d63d2c),
+           TOBN(0x8b8068bd, 0x1571cd07), TOBN(0x30c3aa4f, 0xd79670cd)},
+          {TOBN(0x25e8fd4b, 0x941ade7f), TOBN(0x3d1debdc, 0x32790011),
+           TOBN(0x65b6dcbd, 0x3a3f9ff0), TOBN(0x282736a4, 0x793de69c)}},
+         {{TOBN(0xef69a0c3, 0xd41d3bd3), TOBN(0xb533b8c9, 0x07a26bde),
+           TOBN(0xe2801d97, 0xdb2edf9f), TOBN(0xdc4a8269, 0xe1877af0)},
+          {TOBN(0x6c1c5851, 0x3d590dbe), TOBN(0x84632f6b, 0xee4e9357),
+           TOBN(0xd36d36b7, 0x79b33374), TOBN(0xb46833e3, 0x9bbca2e6)}},
+         {{TOBN(0x37893913, 0xf7fc0586), TOBN(0x385315f7, 0x66bf4719),
+           TOBN(0x72c56293, 0xb31855dc), TOBN(0xd1416d4e, 0x849061fe)},
+          {TOBN(0xbeb3ab78, 0x51047213), TOBN(0x447f6e61, 0xf040c996),
+           TOBN(0xd06d310d, 0x638b1d0c), TOBN(0xe28a413f, 0xbad1522e)}},
+         {{TOBN(0x685a76cb, 0x82003f86), TOBN(0x610d07f7, 0x0bcdbca3),
+           TOBN(0x6ff66021, 0x9ca4c455), TOBN(0x7df39b87, 0xcea10eec)},
+          {TOBN(0xb9255f96, 0xe22db218), TOBN(0x8cc6d9eb, 0x08a34c44),
+           TOBN(0xcd4ffb86, 0x859f9276), TOBN(0x8fa15eb2, 0x50d07335)}},
+         {{TOBN(0xdf553845, 0xcf2c24b5), TOBN(0x89f66a9f, 0x52f9c3ba),
+           TOBN(0x8f22b5b9, 0xe4a7ceb3), TOBN(0xaffef809, 0x0e134686)},
+          {TOBN(0x3e53e1c6, 0x8eb8fac2), TOBN(0x93c1e4eb, 0x28aec98e),
+           TOBN(0xb6b91ec5, 0x32a43bcb), TOBN(0x2dbfa947, 0xb2d74a51)}},
+         {{TOBN(0xe065d190, 0xca84bad7), TOBN(0xfb13919f, 0xad58e65c),
+           TOBN(0x3c41718b, 0xf1cb6e31), TOBN(0x688969f0, 0x06d05c3f)},
+          {TOBN(0xd4f94ce7, 0x21264d45), TOBN(0xfdfb65e9, 0x7367532b),
+           TOBN(0x5b1be8b1, 0x0945a39d), TOBN(0x229f789c, 0x2b8baf3b)}},
+         {{TOBN(0xd8f41f3e, 0x6f49f15d), TOBN(0x678ce828, 0x907f0792),
+           TOBN(0xc69ace82, 0xfca6e867), TOBN(0x106451ae, 0xd01dcc89)},
+          {TOBN(0x1bb4f7f0, 0x19fc32d2), TOBN(0x64633dfc, 0xb00c52d2),
+           TOBN(0x8f13549a, 0xad9ea445), TOBN(0x99a3bf50, 0xfb323705)}},
+         {{TOBN(0x0c9625a2, 0x534d4dbc), TOBN(0x45b8f1d1, 0xc2a2fea3),
+           TOBN(0x76ec21a1, 0xa530fc1a), TOBN(0x4bac9c2a, 0x9e5bd734)},
+          {TOBN(0x5996d76a, 0x7b4e3587), TOBN(0x0045cdee, 0x1182d9e3),
+           TOBN(0x1aee24b9, 0x1207f13d), TOBN(0x66452e97, 0x97345a41)}},
+         {{TOBN(0x16e5b054, 0x9f950cd0), TOBN(0x9cc72fb1, 0xd7fdd075),
+           TOBN(0x6edd61e7, 0x66249663), TOBN(0xde4caa4d, 0xf043cccb)},
+          {TOBN(0x11b1f57a, 0x55c7ac17), TOBN(0x779cbd44, 0x1a85e24d),
+           TOBN(0x78030f86, 0xe46081e7), TOBN(0xfd4a6032, 0x8e20f643)}},
+         {{TOBN(0xcc7a6488, 0x0a750c0f), TOBN(0x39bacfe3, 0x4e548e83),
+           TOBN(0x3d418c76, 0x0c110f05), TOBN(0x3e4daa4c, 0xb1f11588)},
+          {TOBN(0x2733e7b5, 0x5ffc69ff), TOBN(0x46f147bc, 0x92053127),
+           TOBN(0x885b2434, 0xd722df94), TOBN(0x6a444f65, 0xe6fc6b7c)}}},
+        {{{TOBN(0x7a1a465a, 0xc3f16ea8), TOBN(0x115a461d, 0xb2f1d11c),
+           TOBN(0x4767dd95, 0x6c68a172), TOBN(0x3392f2eb, 0xd13a4698)},
+          {TOBN(0xc7a99ccd, 0xe526cdc7), TOBN(0x8e537fdc, 0x22292b81),
+           TOBN(0x76d8cf69, 0xa6d39198), TOBN(0xffc5ff43, 0x2446852d)}},
+         {{TOBN(0x97b14f7e, 0xa90567e6), TOBN(0x513257b7, 0xb6ae5cb7),
+           TOBN(0x85454a3c, 0x9f10903d), TOBN(0xd8d2c9ad, 0x69bc3724)},
+          {TOBN(0x38da9324, 0x6b29cb44), TOBN(0xb540a21d, 0x77c8cbac),
+           TOBN(0x9bbfe435, 0x01918e42), TOBN(0xfffa707a, 0x56c3614e)}},
+         {{TOBN(0x0ce4e3f1, 0xd4e353b7), TOBN(0x062d8a14, 0xef46b0a0),
+           TOBN(0x6408d5ab, 0x574b73fd), TOBN(0xbc41d1c9, 0xd3273ffd)},
+          {TOBN(0x3538e1e7, 0x6be77800), TOBN(0x71fe8b37, 0xc5655031),
+           TOBN(0x1cd91621, 0x6b9b331a), TOBN(0xad825d0b, 0xbb388f73)}},
+         {{TOBN(0x56c2e05b, 0x1cb76219), TOBN(0x0ec0bf91, 0x71567e7e),
+           TOBN(0xe7076f86, 0x61c4c910), TOBN(0xd67b085b, 0xbabc04d9)},
+          {TOBN(0x9fb90459, 0x5e93a96a), TOBN(0x7526c1ea, 0xfbdc249a),
+           TOBN(0x0d44d367, 0xecdd0bb7), TOBN(0x95399917, 0x9dc0d695)}},
+         {{TOBN(0x61360ee9, 0x9e240d18), TOBN(0x057cdcac, 0xb4b94466),
+           TOBN(0xe7667cd1, 0x2fe5325c), TOBN(0x1fa297b5, 0x21974e3b)},
+          {TOBN(0xfa4081e7, 0xdb083d76), TOBN(0x31993be6, 0xf206bd15),
+           TOBN(0x8949269b, 0x14c19f8c), TOBN(0x21468d72, 0xa9d92357)}},
+         {{TOBN(0x2ccbc583, 0xa4c506ec), TOBN(0x957ed188, 0xd1acfe97),
+           TOBN(0x8baed833, 0x12f1aea2), TOBN(0xef2a6cb4, 0x8325362d)},
+          {TOBN(0x130dde42, 0x8e195c43), TOBN(0xc842025a, 0x0e6050c6),
+           TOBN(0x2da972a7, 0x08686a5d), TOBN(0xb52999a1, 0xe508b4a8)}},
+         {{TOBN(0xd9f090b9, 0x10a5a8bd), TOBN(0xca91d249, 0x096864da),
+           TOBN(0x8e6a93be, 0x3f67dbc1), TOBN(0xacae6fba, 0xf5f4764c)},
+          {TOBN(0x1563c6e0, 0xd21411a0), TOBN(0x28fa787f, 0xda0a4ad8),
+           TOBN(0xd524491c, 0x908c8030), TOBN(0x1257ba0e, 0x4c795f07)}},
+         {{TOBN(0x83f49167, 0xceca9754), TOBN(0x426d2cf6, 0x4b7939a0),
+           TOBN(0x2555e355, 0x723fd0bf), TOBN(0xa96e6d06, 0xc4f144e2)},
+          {TOBN(0x4768a8dd, 0x87880e61), TOBN(0x15543815, 0xe508e4d5),
+           TOBN(0x09d7e772, 0xb1b65e15), TOBN(0x63439dd6, 0xac302fa0)}},
+         {{TOBN(0xb93f802f, 0xc14e35c2), TOBN(0x71735b7c, 0x4341333c),
+           TOBN(0x03a25104, 0x16d4f362), TOBN(0x3f4d069b, 0xbf433c8e)},
+          {TOBN(0x0d83ae01, 0xf78f5a7c), TOBN(0x50a8ffbe, 0x7c4eed07),
+           TOBN(0xc74f8906, 0x76e10f83), TOBN(0x7d080966, 0x9ddaf8e1)}},
+         {{TOBN(0xb11df8e1, 0x698e04cc), TOBN(0x877be203, 0x169005c8),
+           TOBN(0x32749e8c, 0x4f3c6179), TOBN(0x2dbc9d0a, 0x7853fc05)},
+          {TOBN(0x187d4f93, 0x9454d937), TOBN(0xe682ce9d, 0xb4800e1b),
+           TOBN(0xa9129ad8, 0x165e68e8), TOBN(0x0fe29735, 0xbe7f785b)}},
+         {{TOBN(0x5303f40c, 0x5b9e02b7), TOBN(0xa37c9692, 0x35ee04e8),
+           TOBN(0x5f46cc20, 0x34d6632b), TOBN(0x55ef72b2, 0x96ac545b)},
+          {TOBN(0xabec5c1f, 0x7b91b062), TOBN(0x0a79e1c7, 0xbb33e821),
+           TOBN(0xbb04b428, 0x3a9f4117), TOBN(0x0de1f28f, 0xfd2a475a)}},
+         {{TOBN(0x31019ccf, 0x3a4434b4), TOBN(0xa3458111, 0x1a7954dc),
+           TOBN(0xa9dac80d, 0xe34972a7), TOBN(0xb043d054, 0x74f6b8dd)},
+          {TOBN(0x021c319e, 0x11137b1a), TOBN(0x00a754ce, 0xed5cc03f),
+           TOBN(0x0aa2c794, 0xcbea5ad4), TOBN(0x093e67f4, 0x70c015b6)}},
+         {{TOBN(0x72cdfee9, 0xc97e3f6b), TOBN(0xc10bcab4, 0xb6da7461),
+           TOBN(0x3b02d2fc, 0xb59806b9), TOBN(0x85185e89, 0xa1de6f47)},
+          {TOBN(0x39e6931f, 0x0eb6c4d4), TOBN(0x4d4440bd, 0xd4fa5b04),
+           TOBN(0x5418786e, 0x34be7eb8), TOBN(0x6380e521, 0x9d7259bc)}},
+         {{TOBN(0x20ac0351, 0xd598d710), TOBN(0x272c4166, 0xcb3a4da4),
+           TOBN(0xdb82fe1a, 0xca71de1f), TOBN(0x746e79f2, 0xd8f54b0f)},
+          {TOBN(0x6e7fc736, 0x4b573e9b), TOBN(0x75d03f46, 0xfd4b5040),
+           TOBN(0x5c1cc36d, 0x0b98d87b), TOBN(0x513ba3f1, 0x1f472da1)}},
+         {{TOBN(0x79d0af26, 0xabb177dd), TOBN(0xf82ab568, 0x7891d564),
+           TOBN(0x2b6768a9, 0x72232173), TOBN(0xefbb3bb0, 0x8c1f6619)},
+          {TOBN(0xb29c11db, 0xa6d18358), TOBN(0x519e2797, 0xb0916d3a),
+           TOBN(0xd4dc18f0, 0x9188e290), TOBN(0x648e86e3, 0x98b0ca7f)}},
+         {{TOBN(0x859d3145, 0x983c38b5), TOBN(0xb14f176c, 0x637abc8b),
+           TOBN(0x2793fb9d, 0xcaff7be6), TOBN(0xebe5a55f, 0x35a66a5a)},
+          {TOBN(0x7cec1dcd, 0x9f87dc59), TOBN(0x7c595cd3, 0xfbdbf560),
+           TOBN(0x5b543b22, 0x26eb3257), TOBN(0x69080646, 0xc4c935fd)}},
+         {{TOBN(0x7f2e4403, 0x81e9ede3), TOBN(0x243c3894, 0xcaf6df0a),
+           TOBN(0x7c605bb1, 0x1c073b11), TOBN(0xcd06a541, 0xba6a4a62)},
+          {TOBN(0x29168949, 0x49d4e2e5), TOBN(0x33649d07, 0x4af66880),
+           TOBN(0xbfc0c885, 0xe9a85035), TOBN(0xb4e52113, 0xfc410f4b)}},
+         {{TOBN(0xdca3b706, 0x78a6513b), TOBN(0x92ea4a2a, 0x9edb1943),
+           TOBN(0x02642216, 0xdb6e2dd8), TOBN(0x9b45d0b4, 0x9fd57894)},
+          {TOBN(0x114e70db, 0xc69d11ae), TOBN(0x1477dd19, 0x4c57595f),
+           TOBN(0xbc2208b4, 0xec77c272), TOBN(0x95c5b4d7, 0xdb68f59c)}},
+         {{TOBN(0xb8c4fc63, 0x42e532b7), TOBN(0x386ba422, 0x9ae35290),
+           TOBN(0xfb5dda42, 0xd201ecbc), TOBN(0x2353dc8b, 0xa0e38fd6)},
+          {TOBN(0x9a0b85ea, 0x68f7e978), TOBN(0x96ec5682, 0x2ad6d11f),
+           TOBN(0x5e279d6c, 0xe5f6886d), TOBN(0xd3fe03cd, 0x3cb1914d)}},
+         {{TOBN(0xfe541fa4, 0x7ea67c77), TOBN(0x952bd2af, 0xe3ea810c),
+           TOBN(0x791fef56, 0x8d01d374), TOBN(0xa3a1c621, 0x0f11336e)},
+          {TOBN(0x5ad0d5a9, 0xc7ec6d79), TOBN(0xff7038af, 0x3225c342),
+           TOBN(0x003c6689, 0xbc69601b), TOBN(0x25059bc7, 0x45e8747d)}},
+         {{TOBN(0xfa4965b2, 0xf2086fbf), TOBN(0xf6840ea6, 0x86916078),
+           TOBN(0xd7ac7620, 0x70081d6c), TOBN(0xe600da31, 0xb5328645)},
+          {TOBN(0x01916f63, 0x529b8a80), TOBN(0xe80e4858, 0x2d7d6f3e),
+           TOBN(0x29eb0fe8, 0xd664ca7c), TOBN(0xf017637b, 0xe7b43b0c)}},
+         {{TOBN(0x9a75c806, 0x76cb2566), TOBN(0x8f76acb1, 0xb24892d9),
+           TOBN(0x7ae7b9cc, 0x1f08fe45), TOBN(0x19ef7329, 0x6a4907d8)},
+          {TOBN(0x2db4ab71, 0x5f228bf0), TOBN(0xf3cdea39, 0x817032d7),
+           TOBN(0x0b1f482e, 0xdcabe3c0), TOBN(0x3baf76b4, 0xbb86325c)}},
+         {{TOBN(0xd49065e0, 0x10089465), TOBN(0x3bab5d29, 0x8e77c596),
+           TOBN(0x7636c3a6, 0x193dbd95), TOBN(0xdef5d294, 0xb246e499)},
+          {TOBN(0xb22c58b9, 0x286b2475), TOBN(0xa0b93939, 0xcd80862b),
+           TOBN(0x3002c83a, 0xf0992388), TOBN(0x6de01f9b, 0xeacbe14c)}},
+         {{TOBN(0x6aac688e, 0xadd70482), TOBN(0x708de92a, 0x7b4a4e8a),
+           TOBN(0x75b6dd73, 0x758a6eef), TOBN(0xea4bf352, 0x725b3c43)},
+          {TOBN(0x10041f2c, 0x87912868), TOBN(0xb1b1be95, 0xef09297a),
+           TOBN(0x19ae23c5, 0xa9f3860a), TOBN(0xc4f0f839, 0x515dcf4b)}},
+         {{TOBN(0x3c7ecca3, 0x97f6306a), TOBN(0x744c44ae, 0x68a3a4b0),
+           TOBN(0x69cd13a0, 0xb3a1d8a2), TOBN(0x7cad0a1e, 0x5256b578)},
+          {TOBN(0xea653fcd, 0x33791d9e), TOBN(0x9cc2a05d, 0x74b2e05f),
+           TOBN(0x73b391dc, 0xfd7affa2), TOBN(0xddb7091e, 0xb6b05442)}},
+         {{TOBN(0xc71e27bf, 0x8538a5c6), TOBN(0x195c63dd, 0x89abff17),
+           TOBN(0xfd315285, 0x1b71e3da), TOBN(0x9cbdfda7, 0xfa680fa0)},
+          {TOBN(0x9db876ca, 0x849d7eab), TOBN(0xebe2764b, 0x3c273271),
+           TOBN(0x663357e3, 0xf208dcea), TOBN(0x8c5bd833, 0x565b1b70)}},
+         {{TOBN(0xccc3b4f5, 0x9837fc0d), TOBN(0x9b641ba8, 0xa79cf00f),
+           TOBN(0x7428243d, 0xdfdf3990), TOBN(0x83a594c4, 0x020786b1)},
+          {TOBN(0xb712451a, 0x526c4502), TOBN(0x9d39438e, 0x6adb3f93),
+           TOBN(0xfdb261e3, 0xe9ff0ccd), TOBN(0x80344e3c, 0xe07af4c3)}},
+         {{TOBN(0x75900d7c, 0x2fa4f126), TOBN(0x08a3b865, 0x5c99a232),
+           TOBN(0x2478b6bf, 0xdb25e0c3), TOBN(0x482cc2c2, 0x71db2edf)},
+          {TOBN(0x37df7e64, 0x5f321bb8), TOBN(0x8a93821b, 0x9a8005b4),
+           TOBN(0x3fa2f10c, 0xcc8c1958), TOBN(0x0d332218, 0x2c269d0a)}},
+         {{TOBN(0x20ab8119, 0xe246b0e6), TOBN(0xb39781e4, 0xd349fd17),
+           TOBN(0xd293231e, 0xb31aa100), TOBN(0x4b779c97, 0xbb032168)},
+          {TOBN(0x4b3f19e1, 0xc8470500), TOBN(0x45b7efe9, 0x0c4c869d),
+           TOBN(0xdb84f38a, 0xa1a6bbcc), TOBN(0x3b59cb15, 0xb2fddbc1)}},
+         {{TOBN(0xba5514df, 0x3fd165e8), TOBN(0x499fd6a9, 0x061f8811),
+           TOBN(0x72cd1fe0, 0xbfef9f00), TOBN(0x120a4bb9, 0x79ad7e8a)},
+          {TOBN(0xf2ffd095, 0x5f4a5ac5), TOBN(0xcfd174f1, 0x95a7a2f0),
+           TOBN(0xd42301ba, 0x9d17baf1), TOBN(0xd2fa487a, 0x77f22089)}},
+         {{TOBN(0x9cb09efe, 0xb1dc77e1), TOBN(0xe9566939, 0x21c99682),
+           TOBN(0x8c546901, 0x6c6067bb), TOBN(0xfd378574, 0x61c24456)},
+          {TOBN(0x2b6a6cbe, 0x81796b33), TOBN(0x62d550f6, 0x58e87f8b),
+           TOBN(0x1b763e1c, 0x7f1b01b4), TOBN(0x4b93cfea, 0x1b1b5e12)}},
+         {{TOBN(0xb9345238, 0x1d531696), TOBN(0x57201c00, 0x88cdde69),
+           TOBN(0xdde92251, 0x9a86afc7), TOBN(0xe3043895, 0xbd35cea8)},
+          {TOBN(0x7608c1e1, 0x8555970d), TOBN(0x8267dfa9, 0x2535935e),
+           TOBN(0xd4c60a57, 0x322ea38b), TOBN(0xe0bf7977, 0x804ef8b5)}},
+         {{TOBN(0x1a0dab28, 0xc06fece4), TOBN(0xd405991e, 0x94e7b49d),
+           TOBN(0xc542b6d2, 0x706dab28), TOBN(0xcb228da3, 0xa91618fb)},
+          {TOBN(0x224e4164, 0x107d1cea), TOBN(0xeb9fdab3, 0xd0f5d8f1),
+           TOBN(0xc02ba386, 0x0d6e41cd), TOBN(0x676a72c5, 0x9b1f7146)}},
+         {{TOBN(0xffd6dd98, 0x4d6cb00b), TOBN(0xcef9c5ca, 0xde2e8d7c),
+           TOBN(0xa1bbf5d7, 0x641c7936), TOBN(0x1b95b230, 0xee8f772e)},
+          {TOBN(0xf765a92e, 0xe8ac25b1), TOBN(0xceb04cfc, 0x3a18b7c6),
+           TOBN(0x27944cef, 0x0acc8966), TOBN(0xcbb3c957, 0x434c1004)}},
+         {{TOBN(0x9c9971a1, 0xa43ff93c), TOBN(0x5bc2db17, 0xa1e358a9),
+           TOBN(0x45b4862e, 0xa8d9bc82), TOBN(0x70ebfbfb, 0x2201e052)},
+          {TOBN(0xafdf64c7, 0x92871591), TOBN(0xea5bcae6, 0xb42d0219),
+           TOBN(0xde536c55, 0x2ad8f03c), TOBN(0xcd6c3f4d, 0xa76aa33c)}},
+         {{TOBN(0xbeb5f623, 0x0bca6de3), TOBN(0xdd20dd99, 0xb1e706fd),
+           TOBN(0x90b3ff9d, 0xac9059d4), TOBN(0x2d7b2902, 0x7ccccc4e)},
+          {TOBN(0x8a090a59, 0xce98840f), TOBN(0xa5d947e0, 0x8410680a),
+           TOBN(0x49ae346a, 0x923379a5), TOBN(0x7dbc84f9, 0xb28a3156)}},
+         {{TOBN(0xfd40d916, 0x54a1aff2), TOBN(0xabf318ba, 0x3a78fb9b),
+           TOBN(0x50152ed8, 0x3029f95e), TOBN(0x9fc1dd77, 0xc58ad7fa)},
+          {TOBN(0x5fa57915, 0x13595c17), TOBN(0xb9504668, 0x8f62b3a9),
+           TOBN(0x907b5b24, 0xff3055b0), TOBN(0x2e995e35, 0x9a84f125)}},
+         {{TOBN(0x87dacf69, 0x7e9bbcfb), TOBN(0x95d0c1d6, 0xe86d96e3),
+           TOBN(0x65726e3c, 0x2d95a75c), TOBN(0x2c3c9001, 0xacd27f21)},
+          {TOBN(0x1deab561, 0x6c973f57), TOBN(0x108b7e2c, 0xa5221643),
+           TOBN(0x5fee9859, 0xc4ef79d4), TOBN(0xbd62b88a, 0x40d4b8c6)}},
+         {{TOBN(0xb4dd29c4, 0x197c75d6), TOBN(0x266a6df2, 0xb7076feb),
+           TOBN(0x9512d0ea, 0x4bf2df11), TOBN(0x1320c24f, 0x6b0cc9ec)},
+          {TOBN(0x6bb1e0e1, 0x01a59596), TOBN(0x8317c5bb, 0xeff9aaac),
+           TOBN(0x65bb405e, 0x385aa6c9), TOBN(0x613439c1, 0x8f07988f)}},
+         {{TOBN(0xd730049f, 0x16a66e91), TOBN(0xe97f2820, 0xfa1b0e0d),
+           TOBN(0x4131e003, 0x304c28ea), TOBN(0x820ab732, 0x526bac62)},
+          {TOBN(0xb2ac9ef9, 0x28714423), TOBN(0x54ecfffa, 0xadb10cb2),
+           TOBN(0x8781476e, 0xf886a4cc), TOBN(0x4b2c87b5, 0xdb2f8d49)}},
+         {{TOBN(0xe857cd20, 0x0a44295d), TOBN(0x707d7d21, 0x58c6b044),
+           TOBN(0xae8521f9, 0xf596757c), TOBN(0x87448f03, 0x67b2b714)},
+          {TOBN(0x13a9bc45, 0x5ebcd58d), TOBN(0x79bcced9, 0x9122d3c1),
+           TOBN(0x3c644247, 0x9e076642), TOBN(0x0cf22778, 0x2df4767d)}},
+         {{TOBN(0x5e61aee4, 0x71d444b6), TOBN(0x211236bf, 0xc5084a1d),
+           TOBN(0x7e15bc9a, 0x4fd3eaf6), TOBN(0x68df2c34, 0xab622bf5)},
+          {TOBN(0x9e674f0f, 0x59bf4f36), TOBN(0xf883669b, 0xd7f34d73),
+           TOBN(0xc48ac1b8, 0x31497b1d), TOBN(0x323b925d, 0x5106703b)}},
+         {{TOBN(0x22156f42, 0x74082008), TOBN(0xeffc521a, 0xc8482bcb),
+           TOBN(0x5c6831bf, 0x12173479), TOBN(0xcaa2528f, 0xc4739490)},
+          {TOBN(0x84d2102a, 0x8f1b3c4d), TOBN(0xcf64dfc1, 0x2d9bec0d),
+           TOBN(0x433febad, 0x78a546ef), TOBN(0x1f621ec3, 0x7b73cef1)}},
+         {{TOBN(0x6aecd627, 0x37338615), TOBN(0x162082ab, 0x01d8edf6),
+           TOBN(0x833a8119, 0x19e86b66), TOBN(0x6023a251, 0xd299b5db)},
+          {TOBN(0xf5bb0c3a, 0xbbf04b89), TOBN(0x6735eb69, 0xae749a44),
+           TOBN(0xd0e058c5, 0x4713de3b), TOBN(0xfdf2593e, 0x2c3d4ccd)}},
+         {{TOBN(0x1b8f414e, 0xfdd23667), TOBN(0xdd52aaca, 0xfa2015ee),
+           TOBN(0x3e31b517, 0xbd9625ff), TOBN(0x5ec9322d, 0x8db5918c)},
+          {TOBN(0xbc73ac85, 0xa96f5294), TOBN(0x82aa5bf3, 0x61a0666a),
+           TOBN(0x49755810, 0xbf08ac42), TOBN(0xd21cdfd5, 0x891cedfc)}},
+         {{TOBN(0x918cb57b, 0x67f8be10), TOBN(0x365d1a7c, 0x56ffa726),
+           TOBN(0x2435c504, 0x6532de93), TOBN(0xc0fc5e10, 0x2674cd02)},
+          {TOBN(0x6e51fcf8, 0x9cbbb142), TOBN(0x1d436e5a, 0xafc50692),
+           TOBN(0x766bffff, 0x3fbcae22), TOBN(0x3148c2fd, 0xfd55d3b8)}},
+         {{TOBN(0x52c7fdc9, 0x233222fa), TOBN(0x89ff1092, 0xe419fb6b),
+           TOBN(0x3cd6db99, 0x25254977), TOBN(0x2e85a161, 0x1cf12ca7)},
+          {TOBN(0xadd2547c, 0xdc810bc9), TOBN(0xea3f458f, 0x9d257c22),
+           TOBN(0x642c1fbe, 0x27d6b19b), TOBN(0xed07e6b5, 0x140481a6)}},
+         {{TOBN(0x6ada1d42, 0x86d2e0f8), TOBN(0xe5920122, 0x0e8a9fd5),
+           TOBN(0x02c936af, 0x708c1b49), TOBN(0x60f30fee, 0x2b4bfaff)},
+          {TOBN(0x6637ad06, 0x858e6a61), TOBN(0xce4c7767, 0x3fd374d0),
+           TOBN(0x39d54b2d, 0x7188defb), TOBN(0xa8c9d250, 0xf56a6b66)}},
+         {{TOBN(0x58fc0f5e, 0xb24fe1dc), TOBN(0x9eaf9dee, 0x6b73f24c),
+           TOBN(0xa90d588b, 0x33650705), TOBN(0xde5b62c5, 0xaf2ec729)},
+          {TOBN(0x5c72cfae, 0xd3c2b36e), TOBN(0x868c19d5, 0x034435da),
+           TOBN(0x88605f93, 0xe17ee145), TOBN(0xaa60c4ee, 0x77a5d5b1)}},
+         {{TOBN(0xbcf5bfd2, 0x3b60c472), TOBN(0xaf4ef13c, 0xeb1d3049),
+           TOBN(0x373f44fc, 0xe13895c9), TOBN(0xf29b382f, 0x0cbc9822)},
+          {TOBN(0x1bfcb853, 0x73efaef6), TOBN(0xcf56ac9c, 0xa8c96f40),
+           TOBN(0xd7adf109, 0x7a191e24), TOBN(0x98035f44, 0xbf8a8dc2)}},
+         {{TOBN(0xf40a71b9, 0x1e750c84), TOBN(0xc57f7b0c, 0x5dc6c469),
+           TOBN(0x49a0e79c, 0x6fbc19c1), TOBN(0x6b0f5889, 0xa48ebdb8)},
+          {TOBN(0x5d3fd084, 0xa07c4e9f), TOBN(0xc3830111, 0xab27de14),
+           TOBN(0x0e4929fe, 0x33e08dcc), TOBN(0xf4a5ad24, 0x40bb73a3)}},
+         {{TOBN(0xde86c2bf, 0x490f97ca), TOBN(0x288f09c6, 0x67a1ce18),
+           TOBN(0x364bb886, 0x1844478d), TOBN(0x7840fa42, 0xceedb040)},
+          {TOBN(0x1269fdd2, 0x5a631b37), TOBN(0x94761f1e, 0xa47c8b7d),
+           TOBN(0xfc0c2e17, 0x481c6266), TOBN(0x85e16ea2, 0x3daa5fa7)}},
+         {{TOBN(0xccd86033, 0x92491048), TOBN(0x0c2f6963, 0xf4d402d7),
+           TOBN(0x6336f7df, 0xdf6a865c), TOBN(0x0a2a463c, 0xb5c02a87)},
+          {TOBN(0xb0e29be7, 0xbf2f12ee), TOBN(0xf0a22002, 0x66bad988),
+           TOBN(0x27f87e03, 0x9123c1d7), TOBN(0x21669c55, 0x328a8c98)}},
+         {{TOBN(0x186b9803, 0x92f14529), TOBN(0xd3d056cc, 0x63954df3),
+           TOBN(0x2f03fd58, 0x175a46f6), TOBN(0x63e34ebe, 0x11558558)},
+          {TOBN(0xe13fedee, 0x5b80cfa5), TOBN(0xe872a120, 0xd401dbd1),
+           TOBN(0x52657616, 0xe8a9d667), TOBN(0xbc8da4b6, 0xe08d6693)}},
+         {{TOBN(0x370fb9bb, 0x1b703e75), TOBN(0x6773b186, 0xd4338363),
+           TOBN(0x18dad378, 0xecef7bff), TOBN(0xaac787ed, 0x995677da)},
+          {TOBN(0x4801ea8b, 0x0437164b), TOBN(0xf430ad20, 0x73fe795e),
+           TOBN(0xb164154d, 0x8ee5eb73), TOBN(0x0884ecd8, 0x108f7c0e)}},
+         {{TOBN(0x0e6ec096, 0x5f520698), TOBN(0x640631fe, 0x44f7b8d9),
+           TOBN(0x92fd34fc, 0xa35a68b9), TOBN(0x9c5a4b66, 0x4d40cf4e)},
+          {TOBN(0x949454bf, 0x80b6783d), TOBN(0x80e701fe, 0x3a320a10),
+           TOBN(0x8d1a564a, 0x1a0a39b2), TOBN(0x1436d53d, 0x320587db)}},
+         {{TOBN(0xf5096e6d, 0x6556c362), TOBN(0xbc23a3c0, 0xe2455d7e),
+           TOBN(0x3a7aee54, 0x807230f9), TOBN(0x9ba1cfa6, 0x22ae82fd)},
+          {TOBN(0x833a057a, 0x99c5d706), TOBN(0x8be85f4b, 0x842315c9),
+           TOBN(0xd083179a, 0x66a72f12), TOBN(0x2fc77d5d, 0xcdcc73cd)}},
+         {{TOBN(0x22b88a80, 0x5616ee30), TOBN(0xfb09548f, 0xe7ab1083),
+           TOBN(0x8ad6ab0d, 0x511270cd), TOBN(0x61f6c57a, 0x6924d9ab)},
+          {TOBN(0xa0f7bf72, 0x90aecb08), TOBN(0x849f87c9, 0x0df784a4),
+           TOBN(0x27c79c15, 0xcfaf1d03), TOBN(0xbbf9f675, 0xc463face)}},
+         {{TOBN(0x91502c65, 0x765ba543), TOBN(0x18ce3cac, 0x42ea60dd),
+           TOBN(0xe5cee6ac, 0x6e43ecb3), TOBN(0x63e4e910, 0x68f2aeeb)},
+          {TOBN(0x26234fa3, 0xc85932ee), TOBN(0x96883e8b, 0x4c90c44d),
+           TOBN(0x29b9e738, 0xa18a50f6), TOBN(0xbfc62b2a, 0x3f0420df)}},
+         {{TOBN(0xd22a7d90, 0x6d3e1fa9), TOBN(0x17115618, 0xfe05b8a3),
+           TOBN(0x2a0c9926, 0xbb2b9c01), TOBN(0xc739fcc6, 0xe07e76a2)},
+          {TOBN(0x540e9157, 0x165e439a), TOBN(0x06353a62, 0x6a9063d8),
+           TOBN(0x84d95594, 0x61e927a3), TOBN(0x013b9b26, 0xe2e0be7f)}},
+         {{TOBN(0x4feaec3b, 0x973497f1), TOBN(0x15c0f94e, 0x093ebc2d),
+           TOBN(0x6af5f227, 0x33af0583), TOBN(0x0c2af206, 0xc61f3340)},
+          {TOBN(0xd25dbdf1, 0x4457397c), TOBN(0x2e8ed017, 0xcabcbae0),
+           TOBN(0xe3010938, 0xc2815306), TOBN(0xbaa99337, 0xe8c6cd68)}},
+         {{TOBN(0x08513182, 0x3b0ec7de), TOBN(0x1e1b822b, 0x58df05df),
+           TOBN(0x5c14842f, 0xa5c3b683), TOBN(0x98fe977e, 0x3eba34ce)},
+          {TOBN(0xfd2316c2, 0x0d5e8873), TOBN(0xe48d839a, 0xbd0d427d),
+           TOBN(0x495b2218, 0x623fc961), TOBN(0x24ee56e7, 0xb46fba5e)}},
+         {{TOBN(0x9184a55b, 0x91e4de58), TOBN(0xa7488ca5, 0xdfdea288),
+           TOBN(0xa723862e, 0xa8dcc943), TOBN(0x92d762b2, 0x849dc0fc)},
+          {TOBN(0x3c444a12, 0x091ff4a9), TOBN(0x581113fa, 0x0cada274),
+           TOBN(0xb9de0a45, 0x30d8eae2), TOBN(0x5e0fcd85, 0xdf6b41ea)}},
+         {{TOBN(0x6233ea68, 0xc094dbb5), TOBN(0xb77d062e, 0xd968d410),
+           TOBN(0x3e719bbc, 0x58b3002d), TOBN(0x68e7dd3d, 0x3dc49d58)},
+          {TOBN(0x8d825740, 0x013a5e58), TOBN(0x21311747, 0x3c9e3c1b),
+           TOBN(0x0cb0a2a7, 0x7c99b6ab), TOBN(0x5c48a3b3, 0xc2f888f2)}}},
+        {{{TOBN(0xc7913e91, 0x991724f3), TOBN(0x5eda799c, 0x39cbd686),
+           TOBN(0xddb595c7, 0x63d4fc1e), TOBN(0x6b63b80b, 0xac4fed54)},
+          {TOBN(0x6ea0fc69, 0x7e5fb516), TOBN(0x737708ba, 0xd0f1c964),
+           TOBN(0x9628745f, 0x11a92ca5), TOBN(0x61f37958, 0x9a86967a)}},
+         {{TOBN(0x9af39b2c, 0xaa665072), TOBN(0x78322fa4, 0xefd324ef),
+           TOBN(0x3d153394, 0xc327bd31), TOBN(0x81d5f271, 0x3129dab0)},
+          {TOBN(0xc72e0c42, 0xf48027f5), TOBN(0xaa40cdbc, 0x8536e717),
+           TOBN(0xf45a657a, 0x2d369d0f), TOBN(0xb03bbfc4, 0xea7f74e6)}},
+         {{TOBN(0x46a8c418, 0x0d738ded), TOBN(0x6f1a5bb0, 0xe0de5729),
+           TOBN(0xf10230b9, 0x8ba81675), TOBN(0x32c6f30c, 0x112b33d4)},
+          {TOBN(0x7559129d, 0xd8fffb62), TOBN(0x6a281b47, 0xb459bf05),
+           TOBN(0x77c1bd3a, 0xfa3b6776), TOBN(0x0709b380, 0x7829973a)}},
+         {{TOBN(0x8c26b232, 0xa3326505), TOBN(0x38d69272, 0xee1d41bf),
+           TOBN(0x0459453e, 0xffe32afa), TOBN(0xce8143ad, 0x7cb3ea87)},
+          {TOBN(0x932ec1fa, 0x7e6ab666), TOBN(0x6cd2d230, 0x22286264),
+           TOBN(0x459a46fe, 0x6736f8ed), TOBN(0x50bf0d00, 0x9eca85bb)}},
+         {{TOBN(0x0b825852, 0x877a21ec), TOBN(0x300414a7, 0x0f537a94),
+           TOBN(0x3f1cba40, 0x21a9a6a2), TOBN(0x50824eee, 0x76943c00)},
+          {TOBN(0xa0dbfcec, 0xf83cba5d), TOBN(0xf9538148, 0x93b4f3c0),
+           TOBN(0x61744162, 0x48f24dd7), TOBN(0x5322d64d, 0xe4fb09dd)}},
+         {{TOBN(0x57447384, 0x3d9325f3), TOBN(0xa9bef2d0, 0xf371cb84),
+           TOBN(0x77d2188b, 0xa61e36c5), TOBN(0xbbd6a7d7, 0xc602df72)},
+          {TOBN(0xba3aa902, 0x8f61bc0b), TOBN(0xf49085ed, 0x6ed0b6a1),
+           TOBN(0x8bc625d6, 0xae6e8298), TOBN(0x832b0b1d, 0xa2e9c01d)}},
+         {{TOBN(0xa337c447, 0xf1f0ced1), TOBN(0x800cc793, 0x9492dd2b),
+           TOBN(0x4b93151d, 0xbea08efa), TOBN(0x820cf3f8, 0xde0a741e)},
+          {TOBN(0xff1982dc, 0x1c0f7d13), TOBN(0xef921960, 0x84dde6ca),
+           TOBN(0x1ad7d972, 0x45f96ee3), TOBN(0x319c8dbe, 0x29dea0c7)}},
+         {{TOBN(0xd3ea3871, 0x7b82b99b), TOBN(0x75922d4d, 0x470eb624),
+           TOBN(0x8f66ec54, 0x3b95d466), TOBN(0x66e673cc, 0xbee1e346)},
+          {TOBN(0x6afe67c4, 0xb5f2b89a), TOBN(0x3de9c1e6, 0x290e5cd3),
+           TOBN(0x8c278bb6, 0x310a2ada), TOBN(0x420fa384, 0x0bdb323b)}},
+         {{TOBN(0x0ae1d63b, 0x0eb919b0), TOBN(0xd74ee51d, 0xa74b9620),
+           TOBN(0x395458d0, 0xa674290c), TOBN(0x324c930f, 0x4620a510)},
+          {TOBN(0x2d1f4d19, 0xfbac27d4), TOBN(0x4086e8ca, 0x9bedeeac),
+           TOBN(0x0cdd211b, 0x9b679ab8), TOBN(0x5970167d, 0x7090fec4)}},
+         {{TOBN(0x3420f2c9, 0xfaf1fc63), TOBN(0x616d333a, 0x328c8bb4),
+           TOBN(0x7d65364c, 0x57f1fe4a), TOBN(0x9343e877, 0x55e5c73a)},
+          {TOBN(0x5795176b, 0xe970e78c), TOBN(0xa36ccebf, 0x60533627),
+           TOBN(0xfc7c7380, 0x09cdfc1b), TOBN(0xb39a2afe, 0xb3fec326)}},
+         {{TOBN(0xb7ff1ba1, 0x6224408a), TOBN(0xcc856e92, 0x247cfc5e),
+           TOBN(0x01f102e7, 0xc18bc493), TOBN(0x4613ab74, 0x2091c727)},
+          {TOBN(0xaa25e89c, 0xc420bf2b), TOBN(0x00a53176, 0x90337ec2),
+           TOBN(0xd2be9f43, 0x7d025fc7), TOBN(0x3316fb85, 0x6e6fe3dc)}},
+         {{TOBN(0x27520af5, 0x9ac50814), TOBN(0xfdf95e78, 0x9a8e4223),
+           TOBN(0xb7e7df2a, 0x56bec5a0), TOBN(0xf7022f7d, 0xdf159e5d)},
+          {TOBN(0x93eeeab1, 0xcac1fe8f), TOBN(0x8040188c, 0x37451168),
+           TOBN(0x7ee8aa8a, 0xd967dce6), TOBN(0xfa0e79e7, 0x3abc9299)}},
+         {{TOBN(0x67332cfc, 0x2064cfd1), TOBN(0x339c31de, 0xb0651934),
+           TOBN(0x719b28d5, 0x2a3bcbea), TOBN(0xee74c82b, 0x9d6ae5c6)},
+          {TOBN(0x0927d05e, 0xbaf28ee6), TOBN(0x82cecf2c, 0x9d719028),
+           TOBN(0x0b0d353e, 0xddb30289), TOBN(0xfe4bb977, 0xfddb2e29)}},
+         {{TOBN(0xbb5bb990, 0x640bfd9e), TOBN(0xd226e277, 0x82f62108),
+           TOBN(0x4bf00985, 0x02ffdd56), TOBN(0x7756758a, 0x2ca1b1b5)},
+          {TOBN(0xc32b62a3, 0x5285fe91), TOBN(0xedbc546a, 0x8c9cd140),
+           TOBN(0x1e47a013, 0xaf5cb008), TOBN(0xbca7e720, 0x073ce8f2)}},
+         {{TOBN(0xe10b2ab8, 0x17a91cae), TOBN(0xb89aab65, 0x08e27f63),
+           TOBN(0x7b3074a7, 0xdba3ddf9), TOBN(0x1c20ce09, 0x330c2972)},
+          {TOBN(0x6b9917b4, 0x5fcf7e33), TOBN(0xe6793743, 0x945ceb42),
+           TOBN(0x18fc2215, 0x5c633d19), TOBN(0xad1adb3c, 0xc7485474)}},
+         {{TOBN(0x646f9679, 0x6424c49b), TOBN(0xf888dfe8, 0x67c241c9),
+           TOBN(0xe12d4b93, 0x24f68b49), TOBN(0x9a6b62d8, 0xa571df20)},
+          {TOBN(0x81b4b26d, 0x179483cb), TOBN(0x666f9632, 0x9511fae2),
+           TOBN(0xd281b3e4, 0xd53aa51f), TOBN(0x7f96a765, 0x7f3dbd16)}},
+         {{TOBN(0xa7f8b5bf, 0x074a30ce), TOBN(0xd7f52107, 0x005a32e6),
+           TOBN(0x6f9e0907, 0x50237ed4), TOBN(0x2f21da47, 0x8096fa2b)},
+          {TOBN(0xf3e19cb4, 0xeec863a0), TOBN(0xd18f77fd, 0x9527620a),
+           TOBN(0x9505c81c, 0x407c1cf8), TOBN(0x9998db4e, 0x1b6ec284)}},
+         {{TOBN(0x7e3389e5, 0xc247d44d), TOBN(0x12507141, 0x3f4f3d80),
+           TOBN(0xd4ba0110, 0x4a78a6c7), TOBN(0x312874a0, 0x767720be)},
+          {TOBN(0xded059a6, 0x75944370), TOBN(0xd6123d90, 0x3b2c0bdd),
+           TOBN(0xa56b717b, 0x51c108e3), TOBN(0x9bb7940e, 0x070623e9)}},
+         {{TOBN(0x794e2d59, 0x84ac066c), TOBN(0xf5954a92, 0xe68c69a0),
+           TOBN(0x28c52458, 0x4fd99dcc), TOBN(0x60e639fc, 0xb1012517)},
+          {TOBN(0xc2e60125, 0x7de79248), TOBN(0xe9ef6404, 0xf12fc6d7),
+           TOBN(0x4c4f2808, 0x2a3b5d32), TOBN(0x865ad32e, 0xc768eb8a)}},
+         {{TOBN(0xac02331b, 0x13fb70b6), TOBN(0x037b44c1, 0x95599b27),
+           TOBN(0x1a860fc4, 0x60bd082c), TOBN(0xa2e25745, 0xc980cd01)},
+          {TOBN(0xee3387a8, 0x1da0263e), TOBN(0x931bfb95, 0x2d10f3d6),
+           TOBN(0x5b687270, 0xa1f24a32), TOBN(0xf140e65d, 0xca494b86)}},
+         {{TOBN(0x4f4ddf91, 0xb2f1ac7a), TOBN(0xf99eaabb, 0x760fee27),
+           TOBN(0x57f4008a, 0x49c228e5), TOBN(0x090be440, 0x1cf713bb)},
+          {TOBN(0xac91fbe4, 0x5004f022), TOBN(0xd838c2c2, 0x569e1af6),
+           TOBN(0xd6c7d20b, 0x0f1daaa5), TOBN(0xaa063ac1, 0x1bbb02c0)}},
+         {{TOBN(0x0938a422, 0x59558a78), TOBN(0x5343c669, 0x8435da2f),
+           TOBN(0x96f67b18, 0x034410dc), TOBN(0x7cc1e424, 0x84510804)},
+          {TOBN(0x86a1543f, 0x16dfbb7d), TOBN(0x921fa942, 0x5b5bd592),
+           TOBN(0x9dcccb6e, 0xb33dd03c), TOBN(0x8581ddd9, 0xb843f51e)}},
+         {{TOBN(0x54935fcb, 0x81d73c9e), TOBN(0x6d07e979, 0x0a5e97ab),
+           TOBN(0x4dc7b30a, 0xcf3a6bab), TOBN(0x147ab1f3, 0x170bee11)},
+          {TOBN(0x0aaf8e3d, 0x9fafdee4), TOBN(0xfab3dbcb, 0x538a8b95),
+           TOBN(0x405df4b3, 0x6ef13871), TOBN(0xf1f4e9cb, 0x088d5a49)}},
+         {{TOBN(0x9bcd24d3, 0x66b33f1d), TOBN(0x3b97b820, 0x5ce445c0),
+           TOBN(0xe2926549, 0xba93ff61), TOBN(0xd9c341ce, 0x4dafe616)},
+          {TOBN(0xfb30a76e, 0x16efb6f3), TOBN(0xdf24b8ca, 0x605b953c),
+           TOBN(0x8bd52afe, 0xc2fffb9f), TOBN(0xbbac5ff7, 0xe19d0b96)}},
+         {{TOBN(0x43c01b87, 0x459afccd), TOBN(0x6bd45143, 0xb7432652),
+           TOBN(0x84734530, 0x55b5d78e), TOBN(0x81088fdb, 0x1554ba7d)},
+          {TOBN(0xada0a52c, 0x1e269375), TOBN(0xf9f037c4, 0x2dc5ec10),
+           TOBN(0xc0660607, 0x94bfbc11), TOBN(0xc0a630bb, 0xc9c40d2f)}},
+         {{TOBN(0x5efc797e, 0xab64c31e), TOBN(0xffdb1dab, 0x74507144),
+           TOBN(0xf6124287, 0x1ca6790c), TOBN(0xe9609d81, 0xe69bf1bf)},
+          {TOBN(0xdb898595, 0x00d24fc9), TOBN(0x9c750333, 0xe51fb417),
+           TOBN(0x51830a91, 0xfef7bbde), TOBN(0x0ce67dc8, 0x945f585c)}},
+         {{TOBN(0x9a730ed4, 0x4763eb50), TOBN(0x24a0e221, 0xc1ab0d66),
+           TOBN(0x643b6393, 0x648748f3), TOBN(0x1982daa1, 0x6d3c6291)},
+          {TOBN(0x6f00a9f7, 0x8bbc5549), TOBN(0x7a1783e1, 0x7f36384e),
+           TOBN(0xe8346323, 0xde977f50), TOBN(0x91ab688d, 0xb245502a)}},
+         {{TOBN(0x331ab6b5, 0x6d0bdd66), TOBN(0x0a6ef32e, 0x64b71229),
+           TOBN(0x1028150e, 0xfe7c352f), TOBN(0x27e04350, 0xce7b39d3)},
+          {TOBN(0x2a3c8acd, 0xc1070c82), TOBN(0xfb2034d3, 0x80c9feef),
+           TOBN(0x2d729621, 0x709f3729), TOBN(0x8df290bf, 0x62cb4549)}},
+         {{TOBN(0x02f99f33, 0xfc2e4326), TOBN(0x3b30076d, 0x5eddf032),
+           TOBN(0xbb21f8cf, 0x0c652fb5), TOBN(0x314fb49e, 0xed91cf7b)},
+          {TOBN(0xa013eca5, 0x2f700750), TOBN(0x2b9e3c23, 0x712a4575),
+           TOBN(0xe5355557, 0xaf30fbb0), TOBN(0x1ada3516, 0x7c77e771)}},
+         {{TOBN(0x45f6ecb2, 0x7b135670), TOBN(0xe85d19df, 0x7cfc202e),
+           TOBN(0x0f1b50c7, 0x58d1be9f), TOBN(0x5ebf2c0a, 0xead2e344)},
+          {TOBN(0x1531fe4e, 0xabc199c9), TOBN(0xc7032592, 0x56bab0ae),
+           TOBN(0x16ab2e48, 0x6c1fec54), TOBN(0x0f87fda8, 0x04280188)}},
+         {{TOBN(0xdc9f46fc, 0x609e4a74), TOBN(0x2a44a143, 0xba667f91),
+           TOBN(0xbc3d8b95, 0xb4d83436), TOBN(0xa01e4bd0, 0xc7bd2958)},
+          {TOBN(0x7b182932, 0x73483c90), TOBN(0xa79c6aa1, 0xa7c7b598),
+           TOBN(0xbf3983c6, 0xeaaac07e), TOBN(0x8f18181e, 0x96e0d4e6)}},
+         {{TOBN(0x8553d37c, 0x051af62b), TOBN(0xe9a998eb, 0x0bf94496),
+           TOBN(0xe0844f9f, 0xb0d59aa1), TOBN(0x983fd558, 0xe6afb813)},
+          {TOBN(0x9670c0ca, 0x65d69804), TOBN(0x732b22de, 0x6ea5ff2d),
+           TOBN(0xd7640ba9, 0x5fd8623b), TOBN(0x9f619163, 0xa6351782)}},
+         {{TOBN(0x0bfc27ee, 0xacee5043), TOBN(0xae419e73, 0x2eb10f02),
+           TOBN(0x19c028d1, 0x8943fb05), TOBN(0x71f01cf7, 0xff13aa2a)},
+          {TOBN(0x7790737e, 0x8887a132), TOBN(0x67513309, 0x66318410),
+           TOBN(0x9819e8a3, 0x7ddb795e), TOBN(0xfecb8ef5, 0xdad100b2)}},
+         {{TOBN(0x59f74a22, 0x3021926a), TOBN(0xb7c28a49, 0x6f9b4c1c),
+           TOBN(0xed1a733f, 0x912ad0ab), TOBN(0x42a910af, 0x01a5659c)},
+          {TOBN(0x3842c6e0, 0x7bd68cab), TOBN(0x2b57fa38, 0x76d70ac8),
+           TOBN(0x8a6707a8, 0x3c53aaeb), TOBN(0x62c1c510, 0x65b4db18)}},
+         {{TOBN(0x8de2c1fb, 0xb2d09dc7), TOBN(0xc3dfed12, 0x266bd23b),
+           TOBN(0x927d039b, 0xd5b27db6), TOBN(0x2fb2f0f1, 0x103243da)},
+          {TOBN(0xf855a07b, 0x80be7399), TOBN(0xed9327ce, 0x1f9f27a8),
+           TOBN(0xa0bd99c7, 0x729bdef7), TOBN(0x2b67125e, 0x28250d88)}},
+         {{TOBN(0x784b26e8, 0x8670ced7), TOBN(0xe3dfe41f, 0xc31bd3b4),
+           TOBN(0x9e353a06, 0xbcc85cbc), TOBN(0x302e2909, 0x60178a9d)},
+          {TOBN(0x860abf11, 0xa6eac16e), TOBN(0x76447000, 0xaa2b3aac),
+           TOBN(0x46ff9d19, 0x850afdab), TOBN(0x35bdd6a5, 0xfdb2d4c1)}},
+         {{TOBN(0xe82594b0, 0x7e5c9ce9), TOBN(0x0f379e53, 0x20af346e),
+           TOBN(0x608b31e3, 0xbc65ad4a), TOBN(0x710c6b12, 0x267c4826)},
+          {TOBN(0x51c966f9, 0x71954cf1), TOBN(0xb1cec793, 0x0d0aa215),
+           TOBN(0x1f155989, 0x86bd23a8), TOBN(0xae2ff99c, 0xf9452e86)}},
+         {{TOBN(0xd8dd953c, 0x340ceaa2), TOBN(0x26355275, 0x2e2e9333),
+           TOBN(0x15d4e5f9, 0x8586f06d), TOBN(0xd6bf94a8, 0xf7cab546)},
+          {TOBN(0x33c59a0a, 0xb76a9af0), TOBN(0x52740ab3, 0xba095af7),
+           TOBN(0xc444de8a, 0x24389ca0), TOBN(0xcc6f9863, 0x706da0cb)}},
+         {{TOBN(0xb5a741a7, 0x6b2515cf), TOBN(0x71c41601, 0x9585c749),
+           TOBN(0x78350d4f, 0xe683de97), TOBN(0x31d61524, 0x63d0b5f5)},
+          {TOBN(0x7a0cc5e1, 0xfbce090b), TOBN(0xaac927ed, 0xfbcb2a5b),
+           TOBN(0xe920de49, 0x20d84c35), TOBN(0x8c06a0b6, 0x22b4de26)}},
+         {{TOBN(0xd34dd58b, 0xafe7ddf3), TOBN(0x55851fed, 0xc1e6e55b),
+           TOBN(0xd1395616, 0x960696e7), TOBN(0x940304b2, 0x5f22705f)},
+          {TOBN(0x6f43f861, 0xb0a2a860), TOBN(0xcf121282, 0x0e7cc981),
+           TOBN(0x12186212, 0x0ab64a96), TOBN(0x09215b9a, 0xb789383c)}},
+         {{TOBN(0x311eb305, 0x37387c09), TOBN(0xc5832fce, 0xf03ee760),
+           TOBN(0x30358f58, 0x32f7ea19), TOBN(0xe01d3c34, 0x91d53551)},
+          {TOBN(0x1ca5ee41, 0xda48ea80), TOBN(0x34e71e8e, 0xcf4fa4c1),
+           TOBN(0x312abd25, 0x7af1e1c7), TOBN(0xe3afcdeb, 0x2153f4a5)}},
+         {{TOBN(0x9d5c84d7, 0x00235e9a), TOBN(0x0308d3f4, 0x8c4c836f),
+           TOBN(0xc0a66b04, 0x89332de5), TOBN(0x610dd399, 0x89e566ef)},
+          {TOBN(0xf8eea460, 0xd1ac1635), TOBN(0x84cbb3fb, 0x20a2c0df),
+           TOBN(0x40afb488, 0xe74a48c5), TOBN(0x29738198, 0xd326b150)}},
+         {{TOBN(0x2a17747f, 0xa6d74081), TOBN(0x60ea4c05, 0x55a26214),
+           TOBN(0x53514bb4, 0x1f88c5fe), TOBN(0xedd64567, 0x7e83426c)},
+          {TOBN(0xd5d6cbec, 0x96460b25), TOBN(0xa12fd0ce, 0x68dc115e),
+           TOBN(0xc5bc3ed2, 0x697840ea), TOBN(0x969876a8, 0xa6331e31)}},
+         {{TOBN(0x60c36217, 0x472ff580), TOBN(0xf4229705, 0x4ad41393),
+           TOBN(0x4bd99ef0, 0xa03b8b92), TOBN(0x501c7317, 0xc144f4f6)},
+          {TOBN(0x159009b3, 0x18464945), TOBN(0x6d5e594c, 0x74c5c6be),
+           TOBN(0x2d587011, 0x321a3660), TOBN(0xd1e184b1, 0x3898d022)}},
+         {{TOBN(0x5ba04752, 0x4c6a7e04), TOBN(0x47fa1e2b, 0x45550b65),
+           TOBN(0x9419daf0, 0x48c0a9a5), TOBN(0x66362953, 0x7c243236)},
+          {TOBN(0xcd0744b1, 0x5cb12a88), TOBN(0x561b6f9a, 0x2b646188),
+           TOBN(0x599415a5, 0x66c2c0c0), TOBN(0xbe3f0859, 0x0f83f09a)}},
+         {{TOBN(0x9141c5be, 0xb92041b8), TOBN(0x01ae38c7, 0x26477d0d),
+           TOBN(0xca8b71f3, 0xd12c7a94), TOBN(0xfab5b31f, 0x765c70db)},
+          {TOBN(0x76ae7492, 0x487443e9), TOBN(0x8595a310, 0x990d1349),
+           TOBN(0xf8dbeda8, 0x7d460a37), TOBN(0x7f7ad082, 0x1e45a38f)}},
+         {{TOBN(0xed1d4db6, 0x1059705a), TOBN(0xa3dd492a, 0xe6b9c697),
+           TOBN(0x4b92ee3a, 0x6eb38bd5), TOBN(0xbab2609d, 0x67cc0bb7)},
+          {TOBN(0x7fc4fe89, 0x6e70ee82), TOBN(0xeff2c56e, 0x13e6b7e3),
+           TOBN(0x9b18959e, 0x34d26fca), TOBN(0x2517ab66, 0x889d6b45)}},
+         {{TOBN(0xf167b4e0, 0xbdefdd4f), TOBN(0x69958465, 0xf366e401),
+           TOBN(0x5aa368ab, 0xa73bbec0), TOBN(0x12148709, 0x7b240c21)},
+          {TOBN(0x378c3233, 0x18969006), TOBN(0xcb4d73ce, 0xe1fe53d1),
+           TOBN(0x5f50a80e, 0x130c4361), TOBN(0xd67f5951, 0x7ef5212b)}},
+         {{TOBN(0xf145e21e, 0x9e70c72e), TOBN(0xb2e52e29, 0x5566d2fb),
+           TOBN(0x44eaba4a, 0x032397f5), TOBN(0x5e56937b, 0x7e31a7de)},
+          {TOBN(0x68dcf517, 0x456c61e1), TOBN(0xbc2e954a, 0xa8b0a388),
+           TOBN(0xe3552fa7, 0x60a8b755), TOBN(0x03442dae, 0x73ad0cde)}},
+         {{TOBN(0x37ffe747, 0xceb26210), TOBN(0x983545e8, 0x787baef9),
+           TOBN(0x8b8c8535, 0x86a3de31), TOBN(0xc621dbcb, 0xfacd46db)},
+          {TOBN(0x82e442e9, 0x59266fbb), TOBN(0xa3514c37, 0x339d471c),
+           TOBN(0x3a11b771, 0x62cdad96), TOBN(0xf0cb3b3c, 0xecf9bdf0)}},
+         {{TOBN(0x3fcbdbce, 0x478e2135), TOBN(0x7547b5cf, 0xbda35342),
+           TOBN(0xa97e81f1, 0x8a677af6), TOBN(0xc8c2bf83, 0x28817987)},
+          {TOBN(0xdf07eaaf, 0x45580985), TOBN(0xc68d1f05, 0xc93b45cb),
+           TOBN(0x106aa2fe, 0xc77b4cac), TOBN(0x4c1d8afc, 0x04a7ae86)}},
+         {{TOBN(0xdb41c3fd, 0x9eb45ab2), TOBN(0x5b234b5b, 0xd4b22e74),
+           TOBN(0xda253dec, 0xf215958a), TOBN(0x67e0606e, 0xa04edfa0)},
+          {TOBN(0xabbbf070, 0xef751b11), TOBN(0xf352f175, 0xf6f06dce),
+           TOBN(0xdfc4b6af, 0x6839f6b4), TOBN(0x53ddf9a8, 0x9959848e)}},
+         {{TOBN(0xda49c379, 0xc21520b0), TOBN(0x90864ff0, 0xdbd5d1b6),
+           TOBN(0x2f055d23, 0x5f49c7f7), TOBN(0xe51e4e6a, 0xa796b2d8)},
+          {TOBN(0xc361a67f, 0x5c9dc340), TOBN(0x5ad53c37, 0xbca7c620),
+           TOBN(0xda1d6588, 0x32c756d0), TOBN(0xad60d911, 0x8bb67e13)}},
+         {{TOBN(0xd6c47bdf, 0x0eeec8c6), TOBN(0x4a27fec1, 0x078a1821),
+           TOBN(0x081f7415, 0xc3099524), TOBN(0x8effdf0b, 0x82cd8060)},
+          {TOBN(0xdb70ec1c, 0x65842df8), TOBN(0x8821b358, 0xd319a901),
+           TOBN(0x72ee56ee, 0xde42b529), TOBN(0x5bb39592, 0x236e4286)}},
+         {{TOBN(0xd1183316, 0xfd6f7140), TOBN(0xf9fadb5b, 0xbd8e81f7),
+           TOBN(0x701d5e0c, 0x5a02d962), TOBN(0xfdee4dbf, 0x1b601324)},
+          {TOBN(0xbed17407, 0x35d7620e), TOBN(0x04e3c2c3, 0xf48c0012),
+           TOBN(0x9ee29da7, 0x3455449a), TOBN(0x562cdef4, 0x91a836c4)}},
+         {{TOBN(0x8f682a5f, 0x47701097), TOBN(0x617125d8, 0xff88d0c2),
+           TOBN(0x948fda24, 0x57bb86dd), TOBN(0x348abb8f, 0x289f7286)},
+          {TOBN(0xeb10eab5, 0x99d94bbd), TOBN(0xd51ba28e, 0x4684d160),
+           TOBN(0xabe0e51c, 0x30c8f41a), TOBN(0x66588b45, 0x13254f4a)}},
+         {{TOBN(0x147ebf01, 0xfad097a5), TOBN(0x49883ea8, 0x610e815d),
+           TOBN(0xe44d60ba, 0x8a11de56), TOBN(0xa970de6e, 0x827a7a6d)},
+          {TOBN(0x2be41424, 0x5e17fc19), TOBN(0xd833c657, 0x01214057),
+           TOBN(0x1375813b, 0x363e723f), TOBN(0x6820bb88, 0xe6a52e9b)}},
+         {{TOBN(0x7e7f6970, 0xd875d56a), TOBN(0xd6a0a9ac, 0x51fbf6bf),
+           TOBN(0x54ba8790, 0xa3083c12), TOBN(0xebaeb23d, 0x6ae7eb64)},
+          {TOBN(0xa8685c3a, 0xb99a907a), TOBN(0xf1e74550, 0x026bf40b),
+           TOBN(0x7b73a027, 0xc802cd9e), TOBN(0x9a8a927c, 0x4fef4635)}},
+         {{TOBN(0xe1b6f60c, 0x08191224), TOBN(0xc4126ebb, 0xde4ec091),
+           TOBN(0xe1dff4dc, 0x4ae38d84), TOBN(0xde3f57db, 0x4f2ef985)},
+          {TOBN(0x34964337, 0xd446a1dd), TOBN(0x7bf217a0, 0x859e77f6),
+           TOBN(0x8ff10527, 0x8e1d13f5), TOBN(0xa304ef03, 0x74eeae27)}},
+         {{TOBN(0xfc6f5e47, 0xd19dfa5a), TOBN(0xdb007de3, 0x7fad982b),
+           TOBN(0x28205ad1, 0x613715f5), TOBN(0x251e6729, 0x7889529e)},
+          {TOBN(0x72705184, 0x1ae98e78), TOBN(0xf818537d, 0x271cac32),
+           TOBN(0xc8a15b7e, 0xb7f410f5), TOBN(0xc474356f, 0x81f62393)}},
+         {{TOBN(0x92dbdc5a, 0xc242316b), TOBN(0xabe060ac, 0xdbf4aff5),
+           TOBN(0x6e8c38fe, 0x909a8ec6), TOBN(0x43e514e5, 0x6116cb94)},
+          {TOBN(0x2078fa38, 0x07d784f9), TOBN(0x1161a880, 0xf4b5b357),
+           TOBN(0x5283ce79, 0x13adea3d), TOBN(0x0756c3e6, 0xcc6a910b)}},
+         {{TOBN(0x60bcfe01, 0xaaa79697), TOBN(0x04a73b29, 0x56391db1),
+           TOBN(0xdd8dad47, 0x189b45a0), TOBN(0xbfac0dd0, 0x48d5b8d9)},
+          {TOBN(0x34ab3af5, 0x7d3d2ec2), TOBN(0x6fa2fc2d, 0x207bd3af),
+           TOBN(0x9ff40092, 0x66550ded), TOBN(0x719b3e87, 0x1fd5b913)}},
+         {{TOBN(0xa573a496, 0x6d17fbc7), TOBN(0x0cd1a70a, 0x73d2b24e),
+           TOBN(0x34e2c5ca, 0xb2676937), TOBN(0xe7050b06, 0xbf669f21)},
+          {TOBN(0xfbe948b6, 0x1ede9046), TOBN(0xa0530051, 0x97662659),
+           TOBN(0x58cbd4ed, 0xf10124c5), TOBN(0xde2646e4, 0xdd6c06c8)}},
+         {{TOBN(0x332f8108, 0x8cad38c0), TOBN(0x471b7e90, 0x6bd68ae2),
+           TOBN(0x56ac3fb2, 0x0d8e27a3), TOBN(0xb54660db, 0x136b4b0d)},
+          {TOBN(0x123a1e11, 0xa6fd8de4), TOBN(0x44dbffea, 0xa37799ef),
+           TOBN(0x4540b977, 0xce6ac17c), TOBN(0x495173a8, 0xaf60acef)}}},
+        {{{TOBN(0x9ebb284d, 0x391c2a82), TOBN(0xbcdd4863, 0x158308e8),
+           TOBN(0x006f16ec, 0x83f1edca), TOBN(0xa13e2c37, 0x695dc6c8)},
+          {TOBN(0x2ab756f0, 0x4a057a87), TOBN(0xa8765500, 0xa6b48f98),
+           TOBN(0x4252face, 0x68651c44), TOBN(0xa52b540b, 0xe1765e02)}},
+         {{TOBN(0x4f922fc5, 0x16a0d2bb), TOBN(0x0d5cc16c, 0x1a623499),
+           TOBN(0x9241cf3a, 0x57c62c8b), TOBN(0x2f5e6961, 0xfd1b667f)},
+          {TOBN(0x5c15c70b, 0xf5a01797), TOBN(0x3d20b44d, 0x60956192),
+           TOBN(0x04911b37, 0x071fdb52), TOBN(0xf648f916, 0x8d6f0f7b)}},
+         {{TOBN(0x6dc1acaf, 0xe60b7cf7), TOBN(0x25860a50, 0x84a9d869),
+           TOBN(0x56fc6f09, 0xe7ba8ac4), TOBN(0x828c5bd0, 0x6148d29e)},
+          {TOBN(0xac6b435e, 0xdc55ae5f), TOBN(0xa527f56c, 0xc0117411),
+           TOBN(0x94d5045e, 0xfd24342c), TOBN(0x2c4c0a35, 0x70b67c0d)}},
+         {{TOBN(0x027cc8b8, 0xfac61d9a), TOBN(0x7d25e062, 0xe3c6fe8a),
+           TOBN(0xe08805bf, 0xe5bff503), TOBN(0x13271e6c, 0x6ff632f7)},
+          {TOBN(0x55dca6c0, 0x232f76a5), TOBN(0x8957c32d, 0x701ef426),
+           TOBN(0xee728bcb, 0xa10a5178), TOBN(0x5ea60411, 0xb62c5173)}},
+         {{TOBN(0xfc4e964e, 0xd0b8892b), TOBN(0x9ea17683, 0x9301bb74),
+           TOBN(0x6265c5ae, 0xfcc48626), TOBN(0xe60cf82e, 0xbb3e9102)},
+          {TOBN(0x57adf797, 0xd4df5531), TOBN(0x235b59a1, 0x8deeefe2),
+           TOBN(0x60adcf58, 0x3f306eb1), TOBN(0x105c2753, 0x3d09492d)}},
+         {{TOBN(0x4090914b, 0xb5def996), TOBN(0x1cb69c83, 0x233dd1e7),
+           TOBN(0xc1e9c1d3, 0x9b3d5e76), TOBN(0x1f3338ed, 0xfccf6012)},
+          {TOBN(0xb1e95d0d, 0x2f5378a8), TOBN(0xacf4c2c7, 0x2f00cd21),
+           TOBN(0x6e984240, 0xeb5fe290), TOBN(0xd66c038d, 0x248088ae)}},
+         {{TOBN(0x804d264a, 0xf94d70cf), TOBN(0xbdb802ef, 0x7314bf7e),
+           TOBN(0x8fb54de2, 0x4333ed02), TOBN(0x740461e0, 0x285635d9)},
+          {TOBN(0x4113b2c8, 0x365e9383), TOBN(0xea762c83, 0x3fdef652),
+           TOBN(0x4eec6e2e, 0x47b956c1), TOBN(0xa3d814be, 0x65620fa4)}},
+         {{TOBN(0x9ad5462b, 0xb4d8bc50), TOBN(0x181c0b16, 0xa9195770),
+           TOBN(0xebd4fe1c, 0x78412a68), TOBN(0xae0341bc, 0xc0dff48c)},
+          {TOBN(0xb6bc45cf, 0x7003e866), TOBN(0xf11a6dea, 0x8a24a41b),
+           TOBN(0x5407151a, 0xd04c24c2), TOBN(0x62c9d27d, 0xda5b7b68)}},
+         {{TOBN(0x2e964235, 0x88cceff6), TOBN(0x8594c54f, 0x8b07ed69),
+           TOBN(0x1578e73c, 0xc84d0d0d), TOBN(0x7b4e1055, 0xff532868)},
+          {TOBN(0xa348c0d5, 0xb5ec995a), TOBN(0xbf4b9d55, 0x14289a54),
+           TOBN(0x9ba155a6, 0x58fbd777), TOBN(0x186ed7a8, 0x1a84491d)}},
+         {{TOBN(0xd4992b30, 0x614c0900), TOBN(0xda98d121, 0xbd00c24b),
+           TOBN(0x7f534dc8, 0x7ec4bfa1), TOBN(0x4a5ff674, 0x37dc34bc)},
+          {TOBN(0x68c196b8, 0x1d7ea1d7), TOBN(0x38cf2893, 0x80a6d208),
+           TOBN(0xfd56cd09, 0xe3cbbd6e), TOBN(0xec72e27e, 0x4205a5b6)}},
+         {{TOBN(0x15ea68f5, 0xa44f77f7), TOBN(0x7aa5f9fd, 0xb43c52bc),
+           TOBN(0x86ff676f, 0x94f0e609), TOBN(0xa4cde963, 0x2e2d432b)},
+          {TOBN(0x8cafa0c0, 0xeee470af), TOBN(0x84137d0e, 0x8a3f5ec8),
+           TOBN(0xebb40411, 0xfaa31231), TOBN(0xa239c13f, 0x6f7f7ccf)}},
+         {{TOBN(0x32865719, 0xa8afd30b), TOBN(0x86798328, 0x8a826dce),
+           TOBN(0xdf04e891, 0xc4a8fbe0), TOBN(0xbb6b6e1b, 0xebf56ad3)},
+          {TOBN(0x0a695b11, 0x471f1ff0), TOBN(0xd76c3389, 0xbe15baf0),
+           TOBN(0x018edb95, 0xbe96c43e), TOBN(0xf2beaaf4, 0x90794158)}},
+         {{TOBN(0x152db09e, 0xc3076a27), TOBN(0x5e82908e, 0xe416545d),
+           TOBN(0xa2c41272, 0x356d6f2e), TOBN(0xdc9c9642, 0x31fd74e1)},
+          {TOBN(0x66ceb88d, 0x519bf615), TOBN(0xe29ecd76, 0x05a2274e),
+           TOBN(0x3a0473c4, 0xbf5e2fa0), TOBN(0x6b6eb671, 0x64284e67)}},
+         {{TOBN(0xe8b97932, 0xb88756dd), TOBN(0xed4e8652, 0xf17e3e61),
+           TOBN(0xc2dd1499, 0x3ee1c4a4), TOBN(0xc0aaee17, 0x597f8c0e)},
+          {TOBN(0x15c4edb9, 0x6c168af3), TOBN(0x6563c7bf, 0xb39ae875),
+           TOBN(0xadfadb6f, 0x20adb436), TOBN(0xad55e8c9, 0x9a042ac0)}},
+         {{TOBN(0x975a1ed8, 0xb76da1f5), TOBN(0x10dfa466, 0xa58acb94),
+           TOBN(0x8dd7f7e3, 0xac060282), TOBN(0x6813e66a, 0x572a051e)},
+          {TOBN(0xb4ccae1e, 0x350cb901), TOBN(0xb653d656, 0x50cb7822),
+           TOBN(0x42484710, 0xdfab3b87), TOBN(0xcd7ee537, 0x9b670fd0)}},
+         {{TOBN(0x0a50b12e, 0x523b8bf6), TOBN(0x8009eb5b, 0x8f910c1b),
+           TOBN(0xf535af82, 0x4a167588), TOBN(0x0f835f9c, 0xfb2a2abd)},
+          {TOBN(0xf59b2931, 0x2afceb62), TOBN(0xc797df2a, 0x169d383f),
+           TOBN(0xeb3f5fb0, 0x66ac02b0), TOBN(0x029d4c6f, 0xdaa2d0ca)}},
+         {{TOBN(0xd4059bc1, 0xafab4bc5), TOBN(0x833f5c6f, 0x56783247),
+           TOBN(0xb5346630, 0x8d2d3605), TOBN(0x83387891, 0xd34d8433)},
+          {TOBN(0xd973b30f, 0xadd9419a), TOBN(0xbcca1099, 0xafe3fce8),
+           TOBN(0x08178315, 0x0809aac6), TOBN(0x01b7f21a, 0x540f0f11)}},
+         {{TOBN(0x65c29219, 0x909523c8), TOBN(0xa62f648f, 0xa3a1c741),
+           TOBN(0x88598d4f, 0x60c9e55a), TOBN(0xbce9141b, 0x0e4f347a)},
+          {TOBN(0x9af97d84, 0x35f9b988), TOBN(0x0210da62, 0x320475b6),
+           TOBN(0x3c076e22, 0x9191476c), TOBN(0x7520dbd9, 0x44fc7834)}},
+         {{TOBN(0x6a6b2cfe, 0xc1ab1bbd), TOBN(0xef8a65be, 0xdc650938),
+           TOBN(0x72855540, 0x805d7bc4), TOBN(0xda389396, 0xed11fdfd)},
+          {TOBN(0xa9d5bd36, 0x74660876), TOBN(0x11d67c54, 0xb45dff35),
+           TOBN(0x6af7d148, 0xa4f5da94), TOBN(0xbb8d4c3f, 0xc0bbeb31)}},
+         {{TOBN(0x87a7ebd1, 0xe0a1b12a), TOBN(0x1e4ef88d, 0x770ba95f),
+           TOBN(0x8c33345c, 0xdc2ae9cb), TOBN(0xcecf1276, 0x01cc8403)},
+          {TOBN(0x687c012e, 0x1b39b80f), TOBN(0xfd90d0ad, 0x35c33ba4),
+           TOBN(0xa3ef5a67, 0x5c9661c2), TOBN(0x368fc88e, 0xe017429e)}},
+         {{TOBN(0xd30c6761, 0x196a2fa2), TOBN(0x931b9817, 0xbd5b312e),
+           TOBN(0xba01000c, 0x72f54a31), TOBN(0xa203d2c8, 0x66eaa541)},
+          {TOBN(0xf2abdee0, 0x98939db3), TOBN(0xe37d6c2c, 0x3e606c02),
+           TOBN(0xf2921574, 0x521ff643), TOBN(0x2781b3c4, 0xd7e2fca3)}},
+         {{TOBN(0x664300b0, 0x7850ec06), TOBN(0xac5a38b9, 0x7d3a10cf),
+           TOBN(0x9233188d, 0xe34ab39d), TOBN(0xe77057e4, 0x5072cbb9)},
+          {TOBN(0xbcf0c042, 0xb59e78df), TOBN(0x4cfc91e8, 0x1d97de52),
+           TOBN(0x4661a26c, 0x3ee0ca4a), TOBN(0x5620a4c1, 0xfb8507bc)}},
+         {{TOBN(0x4b44d4aa, 0x049f842c), TOBN(0xceabc5d5, 0x1540e82b),
+           TOBN(0x306710fd, 0x15c6f156), TOBN(0xbe5ae52b, 0x63db1d72)},
+          {TOBN(0x06f1e7e6, 0x334957f1), TOBN(0x57e388f0, 0x31144a70),
+           TOBN(0xfb69bb2f, 0xdf96447b), TOBN(0x0f78ebd3, 0x73e38a12)}},
+         {{TOBN(0xb8222605, 0x2b7ce542), TOBN(0xe6d4ce99, 0x7472bde1),
+           TOBN(0x53e16ebe, 0x09d2f4da), TOBN(0x180ff42e, 0x53b92b2e)},
+          {TOBN(0xc59bcc02, 0x2c34a1c6), TOBN(0x3803d6f9, 0x422c46c2),
+           TOBN(0x18aff74f, 0x5c14a8a2), TOBN(0x55aebf80, 0x10a08b28)}},
+         {{TOBN(0x66097d58, 0x7135593f), TOBN(0x32e6eff7, 0x2be570cd),
+           TOBN(0x584e6a10, 0x2a8c860d), TOBN(0xcd185890, 0xa2eb4163)},
+          {TOBN(0x7ceae99d, 0x6d97e134), TOBN(0xd42c6b70, 0xdd8447ce),
+           TOBN(0x59ddbb4a, 0xb8c50273), TOBN(0x03c612df, 0x3cf34e1e)}},
+         {{TOBN(0x84b9ca15, 0x04b6c5a0), TOBN(0x35216f39, 0x18f0e3a3),
+           TOBN(0x3ec2d2bc, 0xbd986c00), TOBN(0x8bf546d9, 0xd19228fe)},
+          {TOBN(0xd1c655a4, 0x4cd623c3), TOBN(0x366ce718, 0x502b8e5a),
+           TOBN(0x2cfc84b4, 0xeea0bfe7), TOBN(0xe01d5cee, 0xcf443e8e)}},
+         {{TOBN(0x8ec045d9, 0x036520f8), TOBN(0xdfb3c3d1, 0x92d40e98),
+           TOBN(0x0bac4cce, 0xcc559a04), TOBN(0x35eccae5, 0x240ea6b1)},
+          {TOBN(0x180b32db, 0xf8a5a0ac), TOBN(0x547972a5, 0xeb699700),
+           TOBN(0xa3765801, 0xca26bca0), TOBN(0x57e09d0e, 0xa647f25a)}},
+         {{TOBN(0xb956970e, 0x2fdd23cc), TOBN(0xb80288bc, 0x5682e971),
+           TOBN(0xe6e6d91e, 0x9ae86ebc), TOBN(0x0564c83f, 0x8c9f1939)},
+          {TOBN(0x551932a2, 0x39560368), TOBN(0xe893752b, 0x049c28e2),
+           TOBN(0x0b03cee5, 0xa6a158c3), TOBN(0xe12d656b, 0x04964263)}},
+         {{TOBN(0x4b47554e, 0x63e3bc1d), TOBN(0xc719b6a2, 0x45044ff7),
+           TOBN(0x4f24d30a, 0xe48daa07), TOBN(0xa3f37556, 0xc8c1edc3)},
+          {TOBN(0x9a47bf76, 0x0700d360), TOBN(0xbb1a1824, 0x822ae4e2),
+           TOBN(0x22e275a3, 0x89f1fb4c), TOBN(0x72b1aa23, 0x9968c5f5)}},
+         {{TOBN(0xa75feaca, 0xbe063f64), TOBN(0x9b392f43, 0xbce47a09),
+           TOBN(0xd4241509, 0x1ad07aca), TOBN(0x4b0c591b, 0x8d26cd0f)},
+          {TOBN(0x2d42ddfd, 0x92f1169a), TOBN(0x63aeb1ac, 0x4cbf2392),
+           TOBN(0x1de9e877, 0x0691a2af), TOBN(0xebe79af7, 0xd98021da)}},
+         {{TOBN(0xcfdf2a4e, 0x40e50acf), TOBN(0xf0a98ad7, 0xaf01d665),
+           TOBN(0xefb640bf, 0x1831be1f), TOBN(0x6fe8bd2f, 0x80e9ada0)},
+          {TOBN(0x94c103a1, 0x6cafbc91), TOBN(0x170f8759, 0x8308e08c),
+           TOBN(0x5de2d2ab, 0x9780ff4f), TOBN(0x666466bc, 0x45b201f2)}},
+         {{TOBN(0x58af2010, 0xf5b343bc), TOBN(0x0f2e400a, 0xf2f142fe),
+           TOBN(0x3483bfde, 0xa85f4bdf), TOBN(0xf0b1d093, 0x03bfeaa9)},
+          {TOBN(0x2ea01b95, 0xc7081603), TOBN(0xe943e4c9, 0x3dba1097),
+           TOBN(0x47be92ad, 0xb438f3a6), TOBN(0x00bb7742, 0xe5bf6636)}},
+         {{TOBN(0x136b7083, 0x824297b4), TOBN(0x9d0e5580, 0x5584455f),
+           TOBN(0xab48cedc, 0xf1c7d69e), TOBN(0x53a9e481, 0x2a256e76)},
+          {TOBN(0x0402b0e0, 0x65eb2413), TOBN(0xdadbbb84, 0x8fc407a7),
+           TOBN(0xa65cd5a4, 0x8d7f5492), TOBN(0x21d44293, 0x74bae294)}},
+         {{TOBN(0x66917ce6, 0x3b5f1cc4), TOBN(0x37ae52ea, 0xce872e62),
+           TOBN(0xbb087b72, 0x2905f244), TOBN(0x12077086, 0x1e6af74f)},
+          {TOBN(0x4b644e49, 0x1058edea), TOBN(0x827510e3, 0xb638ca1d),
+           TOBN(0x8cf2b704, 0x6038591c), TOBN(0xffc8b47a, 0xfe635063)}},
+         {{TOBN(0x3ae220e6, 0x1b4d5e63), TOBN(0xbd864742, 0x9d961b4b),
+           TOBN(0x610c107e, 0x9bd16bed), TOBN(0x4270352a, 0x1127147b)},
+          {TOBN(0x7d17ffe6, 0x64cfc50e), TOBN(0x50dee01a, 0x1e36cb42),
+           TOBN(0x068a7622, 0x35dc5f9a), TOBN(0x9a08d536, 0xdf53f62c)}},
+         {{TOBN(0x4ed71457, 0x6be5f7de), TOBN(0xd93006f8, 0xc2263c9e),
+           TOBN(0xe073694c, 0xcacacb36), TOBN(0x2ff7a5b4, 0x3ae118ab)},
+          {TOBN(0x3cce53f1, 0xcd871236), TOBN(0xf156a39d, 0xc2aa6d52),
+           TOBN(0x9cc5f271, 0xb198d76d), TOBN(0xbc615b6f, 0x81383d39)}},
+         {{TOBN(0xa54538e8, 0xde3eee6b), TOBN(0x58c77538, 0xab910d91),
+           TOBN(0x31e5bdbc, 0x58d278bd), TOBN(0x3cde4adf, 0xb963acae)},
+          {TOBN(0xb1881fd2, 0x5302169c), TOBN(0x8ca60fa0, 0xa989ed8b),
+           TOBN(0xa1999458, 0xff96a0ee), TOBN(0xc1141f03, 0xac6c283d)}},
+         {{TOBN(0x7677408d, 0x6dfafed3), TOBN(0x33a01653, 0x39661588),
+           TOBN(0x3c9c15ec, 0x0b726fa0), TOBN(0x090cfd93, 0x6c9b56da)},
+          {TOBN(0xe34f4bae, 0xa3c40af5), TOBN(0x3469eadb, 0xd21129f1),
+           TOBN(0xcc51674a, 0x1e207ce8), TOBN(0x1e293b24, 0xc83b1ef9)}},
+         {{TOBN(0x17173d13, 0x1e6c0bb4), TOBN(0x19004695, 0x90776d35),
+           TOBN(0xe7980e34, 0x6de6f922), TOBN(0x873554cb, 0xf4dd9a22)},
+          {TOBN(0x0316c627, 0xcbf18a51), TOBN(0x4d93651b, 0x3032c081),
+           TOBN(0x207f2771, 0x3946834d), TOBN(0x2c08d7b4, 0x30cdbf80)}},
+         {{TOBN(0x137a4fb4, 0x86df2a61), TOBN(0xa1ed9c07, 0xecf7b4a2),
+           TOBN(0xb2e460e2, 0x7bd042ff), TOBN(0xb7f5e2fa, 0x5f62f5ec)},
+          {TOBN(0x7aa6ec6b, 0xcc2423b7), TOBN(0x75ce0a7f, 0xba63eea7),
+           TOBN(0x67a45fb1, 0xf250a6e1), TOBN(0x93bc919c, 0xe53cdc9f)}},
+         {{TOBN(0x9271f56f, 0x871942df), TOBN(0x2372ff6f, 0x7859ad66),
+           TOBN(0x5f4c2b96, 0x33cb1a78), TOBN(0xe3e29101, 0x5838aa83)},
+          {TOBN(0xa7ed1611, 0xe4e8110c), TOBN(0x2a2d70d5, 0x330198ce),
+           TOBN(0xbdf132e8, 0x6720efe0), TOBN(0xe61a8962, 0x66a471bf)}},
+         {{TOBN(0x796d3a85, 0x825808bd), TOBN(0x51dc3cb7, 0x3fd6e902),
+           TOBN(0x643c768a, 0x916219d1), TOBN(0x36cd7685, 0xa2ad7d32)},
+          {TOBN(0xe3db9d05, 0xb22922a4), TOBN(0x6494c87e, 0xdba29660),
+           TOBN(0xf0ac91df, 0xbcd2ebc7), TOBN(0x4deb57a0, 0x45107f8d)}},
+         {{TOBN(0x42271f59, 0xc3d12a73), TOBN(0x5f71687c, 0xa5c2c51d),
+           TOBN(0xcb1f50c6, 0x05797bcb), TOBN(0x29ed0ed9, 0xd6d34eb0)},
+          {TOBN(0xe5fe5b47, 0x4683c2eb), TOBN(0x4956eeb5, 0x97447c46),
+           TOBN(0x5b163a43, 0x71207167), TOBN(0x93fa2fed, 0x0248c5ef)}},
+         {{TOBN(0x67930af2, 0x31f63950), TOBN(0xa77797c1, 0x14caa2c9),
+           TOBN(0x526e80ee, 0x27ac7e62), TOBN(0xe1e6e626, 0x58b28aec)},
+          {TOBN(0x636178b0, 0xb3c9fef0), TOBN(0xaf7752e0, 0x6d5f90be),
+           TOBN(0x94ecaf18, 0xeece51cf), TOBN(0x2864d0ed, 0xca806e1f)}},
+         {{TOBN(0x6de2e383, 0x97c69134), TOBN(0x5a42c316, 0xeb291293),
+           TOBN(0xc7779219, 0x6a60bae0), TOBN(0xa24de346, 0x6b7599d1)},
+          {TOBN(0x49d374aa, 0xb75d4941), TOBN(0x98900586, 0x2d501ff0),
+           TOBN(0x9f16d40e, 0xeb7974cf), TOBN(0x1033860b, 0xcdd8c115)}},
+         {{TOBN(0xb6c69ac8, 0x2094cec3), TOBN(0x9976fb88, 0x403b770c),
+           TOBN(0x1dea026c, 0x4859590d), TOBN(0xb6acbb46, 0x8562d1fd)},
+          {TOBN(0x7cd6c461, 0x44569d85), TOBN(0xc3190a36, 0x97f0891d),
+           TOBN(0xc6f53195, 0x48d5a17d), TOBN(0x7d919966, 0xd749abc8)}},
+         {{TOBN(0x65104837, 0xdd1c8a20), TOBN(0x7e5410c8, 0x2f683419),
+           TOBN(0x958c3ca8, 0xbe94022e), TOBN(0x605c3197, 0x6145dac2)},
+          {TOBN(0x3fc07501, 0x01683d54), TOBN(0x1d7127c5, 0x595b1234),
+           TOBN(0x10b8f87c, 0x9481277f), TOBN(0x677db2a8, 0xe65a1adb)}},
+         {{TOBN(0xec2fccaa, 0xddce3345), TOBN(0x2a6811b7, 0x012a4350),
+           TOBN(0x96760ff1, 0xac598bdc), TOBN(0x054d652a, 0xd1bf4128)},
+          {TOBN(0x0a1151d4, 0x92a21005), TOBN(0xad7f3971, 0x33110fdf),
+           TOBN(0x8c95928c, 0x1960100f), TOBN(0x6c91c825, 0x7bf03362)}},
+         {{TOBN(0xc8c8b2a2, 0xce309f06), TOBN(0xfdb27b59, 0xca27204b),
+           TOBN(0xd223eaa5, 0x0848e32e), TOBN(0xb93e4b2e, 0xe7bfaf1e)},
+          {TOBN(0xc5308ae6, 0x44aa3ded), TOBN(0x317a666a, 0xc015d573),
+           TOBN(0xc888ce23, 0x1a979707), TOBN(0xf141c1e6, 0x0d5c4958)}},
+         {{TOBN(0xb53b7de5, 0x61906373), TOBN(0x858dbade, 0xeb999595),
+           TOBN(0x8cbb47b2, 0xa59e5c36), TOBN(0x660318b3, 0xdcf4e842)},
+          {TOBN(0xbd161ccd, 0x12ba4b7a), TOBN(0xf399daab, 0xf8c8282a),
+           TOBN(0x1587633a, 0xeeb2130d), TOBN(0xa465311a, 0xda38dd7d)}},
+         {{TOBN(0x5f75eec8, 0x64d3779b), TOBN(0x3c5d0476, 0xad64c171),
+           TOBN(0x87410371, 0x2a914428), TOBN(0x8096a891, 0x90e2fc29)},
+          {TOBN(0xd3d2ae9d, 0x23b3ebc2), TOBN(0x90bdd6db, 0xa580cfd6),
+           TOBN(0x52dbb7f3, 0xc5b01f6c), TOBN(0xe68eded4, 0xe102a2dc)}},
+         {{TOBN(0x17785b77, 0x99eb6df0), TOBN(0x26c3cc51, 0x7386b779),
+           TOBN(0x345ed988, 0x6417a48e), TOBN(0xe990b4e4, 0x07d6ef31)},
+          {TOBN(0x0f456b7e, 0x2586abba), TOBN(0x239ca6a5, 0x59c96e9a),
+           TOBN(0xe327459c, 0xe2eb4206), TOBN(0x3a4c3313, 0xa002b90a)}},
+         {{TOBN(0x2a114806, 0xf6a3f6fb), TOBN(0xad5cad2f, 0x85c251dd),
+           TOBN(0x92c1f613, 0xf5a784d3), TOBN(0xec7bfacf, 0x349766d5)},
+          {TOBN(0x04b3cd33, 0x3e23cb3b), TOBN(0x3979fe84, 0xc5a64b2d),
+           TOBN(0x192e2720, 0x7e589106), TOBN(0xa60c43d1, 0xa15b527f)}},
+         {{TOBN(0x2dae9082, 0xbe7cf3a6), TOBN(0xcc86ba92, 0xbc967274),
+           TOBN(0xf28a2ce8, 0xaea0a8a9), TOBN(0x404ca6d9, 0x6ee988b3)},
+          {TOBN(0xfd7e9c5d, 0x005921b8), TOBN(0xf56297f1, 0x44e79bf9),
+           TOBN(0xa163b460, 0x0d75ddc2), TOBN(0x30b23616, 0xa1f2be87)}},
+         {{TOBN(0x4b070d21, 0xbfe50e2b), TOBN(0x7ef8cfd0, 0xe1bfede1),
+           TOBN(0xadba0011, 0x2aac4ae0), TOBN(0x2a3e7d01, 0xb9ebd033)},
+          {TOBN(0x995277ec, 0xe38d9d1c), TOBN(0xb500249e, 0x9c5d2de3),
+           TOBN(0x8912b820, 0xf13ca8c9), TOBN(0xc8798114, 0x877793af)}},
+         {{TOBN(0x19e6125d, 0xec3f1dec), TOBN(0x07b1f040, 0x911178da),
+           TOBN(0xd93ededa, 0x904a6738), TOBN(0x55187a5a, 0x0bebedcd)},
+          {TOBN(0xf7d04722, 0xeb329d41), TOBN(0xf449099e, 0xf170b391),
+           TOBN(0xfd317a69, 0xca99f828), TOBN(0x50c3db2b, 0x34a4976d)}},
+         {{TOBN(0xe9ba7784, 0x3757b392), TOBN(0x326caefd, 0xaa3ca05a),
+           TOBN(0x78e5293b, 0xf1e593d4), TOBN(0x7842a937, 0x0d98fd13)},
+          {TOBN(0xe694bf96, 0x5f96b10d), TOBN(0x373a9df6, 0x06a8cd05),
+           TOBN(0x997d1e51, 0xe8f0c7fc), TOBN(0x1d019790, 0x63fd972e)}},
+         {{TOBN(0x0064d858, 0x5499fb32), TOBN(0x7b67bad9, 0x77a8aeb7),
+           TOBN(0x1d3eb977, 0x2d08eec5), TOBN(0x5fc047a6, 0xcbabae1d)},
+          {TOBN(0x0577d159, 0xe54a64bb), TOBN(0x8862201b, 0xc43497e4),
+           TOBN(0xad6b4e28, 0x2ce0608d), TOBN(0x8b687b7d, 0x0b167aac)}},
+         {{TOBN(0x6ed4d367, 0x8b2ecfa9), TOBN(0x24dfe62d, 0xa90c3c38),
+           TOBN(0xa1862e10, 0x3fe5c42b), TOBN(0x1ca73dca, 0xd5732a9f)},
+          {TOBN(0x35f038b7, 0x76bb87ad), TOBN(0x674976ab, 0xf242b81f),
+           TOBN(0x4f2bde7e, 0xb0fd90cd), TOBN(0x6efc172e, 0xa7fdf092)}},
+         {{TOBN(0x3806b69b, 0x92222f1f), TOBN(0x5a2459ca, 0x6cf7ae70),
+           TOBN(0x6789f69c, 0xa85217ee), TOBN(0x5f232b5e, 0xe3dc85ac)},
+          {TOBN(0x660e3ec5, 0x48e9e516), TOBN(0x124b4e47, 0x3197eb31),
+           TOBN(0x10a0cb13, 0xaafcca23), TOBN(0x7bd63ba4, 0x8213224f)}},
+         {{TOBN(0xaffad7cc, 0x290a7f4f), TOBN(0x6b409c9e, 0x0286b461),
+           TOBN(0x58ab809f, 0xffa407af), TOBN(0xc3122eed, 0xc68ac073)},
+          {TOBN(0x17bf9e50, 0x4ef24d7e), TOBN(0x5d929794, 0x3e2a5811),
+           TOBN(0x519bc867, 0x02902e01), TOBN(0x76bba5da, 0x39c8a851)}},
+         {{TOBN(0xe9f9669c, 0xda94951e), TOBN(0x4b6af58d, 0x66b8d418),
+           TOBN(0xfa321074, 0x17d426a4), TOBN(0xc78e66a9, 0x9dde6027)},
+          {TOBN(0x0516c083, 0x4a53b964), TOBN(0xfc659d38, 0xff602330),
+           TOBN(0x0ab55e5c, 0x58c5c897), TOBN(0x985099b2, 0x838bc5df)}},
+         {{TOBN(0x061d9efc, 0xc52fc238), TOBN(0x712b2728, 0x6ac1da3f),
+           TOBN(0xfb658149, 0x9283fe08), TOBN(0x4954ac94, 0xb8aaa2f7)},
+          {TOBN(0x85c0ada4, 0x7fb2e74f), TOBN(0xee8ba98e, 0xb89926b0),
+           TOBN(0xe4f9d37d, 0x23d1af5b), TOBN(0x14ccdbf9, 0xba9b015e)}},
+         {{TOBN(0xb674481b, 0x7bfe7178), TOBN(0x4e1debae, 0x65405868),
+           TOBN(0x061b2821, 0xc48c867d), TOBN(0x69c15b35, 0x513b30ea)},
+          {TOBN(0x3b4a1666, 0x36871088), TOBN(0xe5e29f5d, 0x1220b1ff),
+           TOBN(0x4b82bb35, 0x233d9f4d), TOBN(0x4e076333, 0x18cdc675)}}},
+        {{{TOBN(0x0d53f5c7, 0xa3e6fced), TOBN(0xe8cbbdd5, 0xf45fbdeb),
+           TOBN(0xf85c01df, 0x13339a70), TOBN(0x0ff71880, 0x142ceb81)},
+          {TOBN(0x4c4e8774, 0xbd70437a), TOBN(0x5fb32891, 0xba0bda6a),
+           TOBN(0x1cdbebd2, 0xf18bd26e), TOBN(0x2f9526f1, 0x03a9d522)}},
+         {{TOBN(0x40ce3051, 0x92c4d684), TOBN(0x8b04d725, 0x7612efcd),
+           TOBN(0xb9dcda36, 0x6f9cae20), TOBN(0x0edc4d24, 0xf058856c)},
+          {TOBN(0x64f2e6bf, 0x85427900), TOBN(0x3de81295, 0xdc09dfea),
+           TOBN(0xd41b4487, 0x379bf26c), TOBN(0x50b62c6d, 0x6df135a9)}},
+         {{TOBN(0xd4f8e3b4, 0xc72dfe67), TOBN(0xc416b0f6, 0x90e19fdf),
+           TOBN(0x18b9098d, 0x4c13bd35), TOBN(0xac11118a, 0x15b8cb9e)},
+          {TOBN(0xf598a318, 0xf0062841), TOBN(0xbfe0602f, 0x89f356f4),
+           TOBN(0x7ae3637e, 0x30177a0c), TOBN(0x34097747, 0x61136537)}},
+         {{TOBN(0x0db2fb5e, 0xd005832a), TOBN(0x5f5efd3b, 0x91042e4f),
+           TOBN(0x8c4ffdc6, 0xed70f8ca), TOBN(0xe4645d0b, 0xb52da9cc)},
+          {TOBN(0x9596f58b, 0xc9001d1f), TOBN(0x52c8f0bc, 0x4e117205),
+           TOBN(0xfd4aa0d2, 0xe398a084), TOBN(0x815bfe3a, 0x104f49de)}},
+         {{TOBN(0x97e5443f, 0x23885e5f), TOBN(0xf72f8f99, 0xe8433aab),
+           TOBN(0xbd00b154, 0xe4d4e604), TOBN(0xd0b35e6a, 0xe5e173ff)},
+          {TOBN(0x57b2a048, 0x9164722d), TOBN(0x3e3c665b, 0x88761ec8),
+           TOBN(0x6bdd1397, 0x3da83832), TOBN(0x3c8b1a1e, 0x73dafe3b)}},
+         {{TOBN(0x4497ace6, 0x54317cac), TOBN(0xbe600ab9, 0x521771b3),
+           TOBN(0xb42e409e, 0xb0dfe8b8), TOBN(0x386a67d7, 0x3942310f)},
+          {TOBN(0x25548d8d, 0x4431cc28), TOBN(0xa7cff142, 0x985dc524),
+           TOBN(0x4d60f5a1, 0x93c4be32), TOBN(0x83ebd5c8, 0xd071c6e1)}},
+         {{TOBN(0xba3a80a7, 0xb1fd2b0b), TOBN(0x9b3ad396, 0x5bec33e8),
+           TOBN(0xb3868d61, 0x79743fb3), TOBN(0xcfd169fc, 0xfdb462fa)},
+          {TOBN(0xd3b499d7, 0x9ce0a6af), TOBN(0x55dc1cf1, 0xe42d3ff8),
+           TOBN(0x04fb9e6c, 0xc6c3e1b2), TOBN(0x47e6961d, 0x6f69a474)}},
+         {{TOBN(0x54eb3acc, 0xe548b37b), TOBN(0xb38e7542, 0x84d40549),
+           TOBN(0x8c3daa51, 0x7b341b4f), TOBN(0x2f6928ec, 0x690bf7fa)},
+          {TOBN(0x0496b323, 0x86ce6c41), TOBN(0x01be1c55, 0x10adadcd),
+           TOBN(0xc04e67e7, 0x4bb5faf9), TOBN(0x3cbaf678, 0xe15c9985)}},
+         {{TOBN(0x8cd12145, 0x50ca4247), TOBN(0xba1aa47a, 0xe7dd30aa),
+           TOBN(0x2f81ddf1, 0xe58fee24), TOBN(0x03452936, 0xeec9b0e8)},
+          {TOBN(0x8bdc3b81, 0x243aea96), TOBN(0x9a2919af, 0x15c3d0e5),
+           TOBN(0x9ea640ec, 0x10948361), TOBN(0x5ac86d5b, 0x6e0bcccf)}},
+         {{TOBN(0xf892d918, 0xc36cf440), TOBN(0xaed3e837, 0xc939719c),
+           TOBN(0xb07b08d2, 0xc0218b64), TOBN(0x6f1bcbba, 0xce9790dd)},
+          {TOBN(0x4a84d6ed, 0x60919b8e), TOBN(0xd8900791, 0x8ac1f9eb),
+           TOBN(0xf84941aa, 0x0dd5daef), TOBN(0xb22fe40a, 0x67fd62c5)}},
+         {{TOBN(0x97e15ba2, 0x157f2db3), TOBN(0xbda2fc8f, 0x8e28ca9c),
+           TOBN(0x5d050da4, 0x37b9f454), TOBN(0x3d57eb57, 0x2379d72e)},
+          {TOBN(0xe9b5eba2, 0xfb5ee997), TOBN(0x01648ca2, 0xe11538ca),
+           TOBN(0x32bb76f6, 0xf6327974), TOBN(0x338f14b8, 0xff3f4bb7)}},
+         {{TOBN(0x524d226a, 0xd7ab9a2d), TOBN(0x9c00090d, 0x7dfae958),
+           TOBN(0x0ba5f539, 0x8751d8c2), TOBN(0x8afcbcdd, 0x3ab8262d)},
+          {TOBN(0x57392729, 0xe99d043b), TOBN(0xef51263b, 0xaebc943a),
+           TOBN(0x9feace93, 0x20862935), TOBN(0x639efc03, 0xb06c817b)}},
+         {{TOBN(0x1fe054b3, 0x66b4be7a), TOBN(0x3f25a9de, 0x84a37a1e),
+           TOBN(0xf39ef1ad, 0x78d75cd9), TOBN(0xd7b58f49, 0x5062c1b5)},
+          {TOBN(0x6f74f9a9, 0xff563436), TOBN(0xf718ff29, 0xe8af51e7),
+           TOBN(0x5234d313, 0x15e97fec), TOBN(0xb6a8e2b1, 0x292f1c0a)}},
+         {{TOBN(0xa7f53aa8, 0x327720c1), TOBN(0x956ca322, 0xba092cc8),
+           TOBN(0x8f03d64a, 0x28746c4d), TOBN(0x51fe1782, 0x66d0d392)},
+          {TOBN(0xd19b34db, 0x3c832c80), TOBN(0x60dccc5c, 0x6da2e3b4),
+           TOBN(0x245dd62e, 0x0a104ccc), TOBN(0xa7ab1de1, 0x620b21fd)}},
+         {{TOBN(0xb293ae0b, 0x3893d123), TOBN(0xf7b75783, 0xb15ee71c),
+           TOBN(0x5aa3c614, 0x42a9468b), TOBN(0xd686123c, 0xdb15d744)},
+          {TOBN(0x8c616891, 0xa7ab4116), TOBN(0x6fcd72c8, 0xa4e6a459),
+           TOBN(0xac219110, 0x77e5fad7), TOBN(0xfb6a20e7, 0x704fa46b)}},
+         {{TOBN(0xe839be7d, 0x341d81dc), TOBN(0xcddb6889, 0x32148379),
+           TOBN(0xda6211a1, 0xf7026ead), TOBN(0xf3b2575f, 0xf4d1cc5e)},
+          {TOBN(0x40cfc8f6, 0xa7a73ae6), TOBN(0x83879a5e, 0x61d5b483),
+           TOBN(0xc5acb1ed, 0x41a50ebc), TOBN(0x59a60cc8, 0x3c07d8fa)}},
+         {{TOBN(0x1b73bdce, 0xb1876262), TOBN(0x2b0d79f0, 0x12af4ee9),
+           TOBN(0x8bcf3b0b, 0xd46e1d07), TOBN(0x17d6af9d, 0xe45d152f)},
+          {TOBN(0x73520461, 0x6d736451), TOBN(0x43cbbd97, 0x56b0bf5a),
+           TOBN(0xb0833a5b, 0xd5999b9d), TOBN(0x702614f0, 0xeb72e398)}},
+         {{TOBN(0x0aadf01a, 0x59c3e9f8), TOBN(0x40200e77, 0xce6b3d16),
+           TOBN(0xda22bdd3, 0xdeddafad), TOBN(0x76dedaf4, 0x310d72e1)},
+          {TOBN(0x49ef807c, 0x4bc2e88f), TOBN(0x6ba81291, 0x146dd5a5),
+           TOBN(0xa1a4077a, 0x7d8d59e9), TOBN(0x87b6a2e7, 0x802db349)}},
+         {{TOBN(0xd5679997, 0x1b4e598e), TOBN(0xf499ef1f, 0x06fe4b1d),
+           TOBN(0x3978d3ae, 0xfcb267c5), TOBN(0xb582b557, 0x235786d0)},
+          {TOBN(0x32b3b2ca, 0x1715cb07), TOBN(0x4c3de6a2, 0x8480241d),
+           TOBN(0x63b5ffed, 0xcb571ecd), TOBN(0xeaf53900, 0xed2fe9a9)}},
+         {{TOBN(0xdec98d4a, 0xc3b81990), TOBN(0x1cb83722, 0x9e0cc8fe),
+           TOBN(0xfe0b0491, 0xd2b427b9), TOBN(0x0f2386ac, 0xe983a66c)},
+          {TOBN(0x930c4d1e, 0xb3291213), TOBN(0xa2f82b2e, 0x59a62ae4),
+           TOBN(0x77233853, 0xf93e89e3), TOBN(0x7f8063ac, 0x11777c7f)}},
+         {{TOBN(0xff0eb567, 0x59ad2877), TOBN(0x6f454642, 0x9865c754),
+           TOBN(0xe6fe701a, 0x236e9a84), TOBN(0xc586ef16, 0x06e40fc3)},
+          {TOBN(0x3f62b6e0, 0x24bafad9), TOBN(0xc8b42bd2, 0x64da906a),
+           TOBN(0xc98e1eb4, 0xda3276a0), TOBN(0x30d0e5fc, 0x06cbf852)}},
+         {{TOBN(0x1b6b2ae1, 0xe8b4dfd4), TOBN(0xd754d5c7, 0x8301cbac),
+           TOBN(0x66097629, 0x112a39ac), TOBN(0xf86b5999, 0x93ba4ab9)},
+          {TOBN(0x26c9dea7, 0x99f9d581), TOBN(0x0473b1a8, 0xc2fafeaa),
+           TOBN(0x1469af55, 0x3b2505a5), TOBN(0x227d16d7, 0xd6a43323)}},
+         {{TOBN(0x3316f73c, 0xad3d97f9), TOBN(0x52bf3bb5, 0x1f137455),
+           TOBN(0x953eafeb, 0x09954e7c), TOBN(0xa721dfed, 0xdd732411)},
+          {TOBN(0xb4929821, 0x141d4579), TOBN(0x3411321c, 0xaa3bd435),
+           TOBN(0xafb355aa, 0x17fa6015), TOBN(0xb4e7ef4a, 0x18e42f0e)}},
+         {{TOBN(0x604ac97c, 0x59371000), TOBN(0xe1c48c70, 0x7f759c18),
+           TOBN(0x3f62ecc5, 0xa5db6b65), TOBN(0x0a78b173, 0x38a21495)},
+          {TOBN(0x6be1819d, 0xbcc8ad94), TOBN(0x70dc04f6, 0xd89c3400),
+           TOBN(0x462557b4, 0xa6b4840a), TOBN(0x544c6ade, 0x60bd21c0)}},
+         {{TOBN(0x6a00f24e, 0x907a544b), TOBN(0xa7520dcb, 0x313da210),
+           TOBN(0xfe939b75, 0x11e4994b), TOBN(0x918b6ba6, 0xbc275d70)},
+          {TOBN(0xd3e5e0fc, 0x644be892), TOBN(0x707a9816, 0xfdaf6c42),
+           TOBN(0x60145567, 0xf15c13fe), TOBN(0x4818ebaa, 0xe130a54a)}},
+         {{TOBN(0x28aad3ad, 0x58d2f767), TOBN(0xdc5267fd, 0xd7e7c773),
+           TOBN(0x4919cc88, 0xc3afcc98), TOBN(0xaa2e6ab0, 0x2db8cd4b)},
+          {TOBN(0xd46fec04, 0xd0c63eaa), TOBN(0xa1cb92c5, 0x19ffa832),
+           TOBN(0x678dd178, 0xe43a631f), TOBN(0xfb5ae1cd, 0x3dc788b3)}},
+         {{TOBN(0x68b4fb90, 0x6e77de04), TOBN(0x7992bcf0, 0xf06dbb97),
+           TOBN(0x896e6a13, 0xc417c01d), TOBN(0x8d96332c, 0xb956be01)},
+          {TOBN(0x902fc93a, 0x413aa2b9), TOBN(0x99a4d915, 0xfc98c8a5),
+           TOBN(0x52c29407, 0x565f1137), TOBN(0x4072690f, 0x21e4f281)}},
+         {{TOBN(0x36e607cf, 0x02ff6072), TOBN(0xa47d2ca9, 0x8ad98cdc),
+           TOBN(0xbf471d1e, 0xf5f56609), TOBN(0xbcf86623, 0xf264ada0)},
+          {TOBN(0xb70c0687, 0xaa9e5cb6), TOBN(0xc98124f2, 0x17401c6c),
+           TOBN(0x8189635f, 0xd4a61435), TOBN(0xd28fb8af, 0xa9d98ea6)}},
+         {{TOBN(0xb9a67c2a, 0x40c251f8), TOBN(0x88cd5d87, 0xa2da44be),
+           TOBN(0x437deb96, 0xe09b5423), TOBN(0x150467db, 0x64287dc1)},
+          {TOBN(0xe161debb, 0xcdabb839), TOBN(0xa79e9742, 0xf1839a3e),
+           TOBN(0xbb8dd3c2, 0x652d202b), TOBN(0x7b3e67f7, 0xe9f97d96)}},
+         {{TOBN(0x5aa5d78f, 0xb1cb6ac9), TOBN(0xffa13e8e, 0xca1d0d45),
+           TOBN(0x369295dd, 0x2ba5bf95), TOBN(0xd68bd1f8, 0x39aff05e)},
+          {TOBN(0xaf0d86f9, 0x26d783f2), TOBN(0x543a59b3, 0xfc3aafc1),
+           TOBN(0x3fcf81d2, 0x7b7da97c), TOBN(0xc990a056, 0xd25dee46)}},
+         {{TOBN(0x3e6775b8, 0x519cce2c), TOBN(0xfc9af71f, 0xae13d863),
+           TOBN(0x774a4a6f, 0x47c1605c), TOBN(0x46ba4245, 0x2fd205e8)},
+          {TOBN(0xa06feea4, 0xd3fd524d), TOBN(0x1e724641, 0x6de1acc2),
+           TOBN(0xf53816f1, 0x334e2b42), TOBN(0x49e5918e, 0x922f0024)}},
+         {{TOBN(0x439530b6, 0x65c7322d), TOBN(0xcf12cc01, 0xb3c1b3fb),
+           TOBN(0xc70b0186, 0x0172f685), TOBN(0xb915ee22, 0x1b58391d)},
+          {TOBN(0x9afdf03b, 0xa317db24), TOBN(0x87dec659, 0x17b8ffc4),
+           TOBN(0x7f46597b, 0xe4d3d050), TOBN(0x80a1c1ed, 0x006500e7)}},
+         {{TOBN(0x84902a96, 0x78bf030e), TOBN(0xfb5e9c9a, 0x50560148),
+           TOBN(0x6dae0a92, 0x63362426), TOBN(0xdcaeecf4, 0xa9e30c40)},
+          {TOBN(0xc0d887bb, 0x518d0c6b), TOBN(0x99181152, 0xcb985b9d),
+           TOBN(0xad186898, 0xef7bc381), TOBN(0x18168ffb, 0x9ee46201)}},
+         {{TOBN(0x9a04cdaa, 0x2502753c), TOBN(0xbb279e26, 0x51407c41),
+           TOBN(0xeacb03aa, 0xf23564e5), TOBN(0x18336582, 0x71e61016)},
+          {TOBN(0x8684b8c4, 0xeb809877), TOBN(0xb336e18d, 0xea0e672e),
+           TOBN(0xefb601f0, 0x34ee5867), TOBN(0x2733edbe, 0x1341cfd1)}},
+         {{TOBN(0xb15e809a, 0x26025c3c), TOBN(0xe6e981a6, 0x9350df88),
+           TOBN(0x92376237, 0x8502fd8e), TOBN(0x4791f216, 0x0c12be9b)},
+          {TOBN(0xb7256789, 0x25f02425), TOBN(0xec863194, 0x7a974443),
+           TOBN(0x7c0ce882, 0xfb41cc52), TOBN(0xc266ff7e, 0xf25c07f2)}},
+         {{TOBN(0x3d4da8c3, 0x017025f3), TOBN(0xefcf628c, 0xfb9579b4),
+           TOBN(0x5c4d0016, 0x1f3716ec), TOBN(0x9c27ebc4, 0x6801116e)},
+          {TOBN(0x5eba0ea1, 0x1da1767e), TOBN(0xfe151452, 0x47004c57),
+           TOBN(0x3ace6df6, 0x8c2373b7), TOBN(0x75c3dffe, 0x5dbc37ac)}},
+         {{TOBN(0x3dc32a73, 0xddc925fc), TOBN(0xb679c841, 0x2f65ee0b),
+           TOBN(0x715a3295, 0x451cbfeb), TOBN(0xd9889768, 0xf76e9a29)},
+          {TOBN(0xec20ce7f, 0xb28ad247), TOBN(0xe99146c4, 0x00894d79),
+           TOBN(0x71457d7c, 0x9f5e3ea7), TOBN(0x097b2662, 0x38030031)}},
+         {{TOBN(0xdb7f6ae6, 0xcf9f82a8), TOBN(0x319decb9, 0x438f473a),
+           TOBN(0xa63ab386, 0x283856c3), TOBN(0x13e3172f, 0xb06a361b)},
+          {TOBN(0x2959f8dc, 0x7d5a006c), TOBN(0x2dbc27c6, 0x75fba752),
+           TOBN(0xc1227ab2, 0x87c22c9e), TOBN(0x06f61f75, 0x71a268b2)}},
+         {{TOBN(0x1b6bb971, 0x04779ce2), TOBN(0xaca83812, 0x0aadcb1d),
+           TOBN(0x297ae0bc, 0xaeaab2d5), TOBN(0xa5c14ee7, 0x5bfb9f13)},
+          {TOBN(0xaa00c583, 0xf17a62c7), TOBN(0x39eb962c, 0x173759f6),
+           TOBN(0x1eeba1d4, 0x86c9a88f), TOBN(0x0ab6c37a, 0xdf016c5e)}},
+         {{TOBN(0xa2a147db, 0xa28a0749), TOBN(0x246c20d6, 0xee519165),
+           TOBN(0x5068d1b1, 0xd3810715), TOBN(0xb1e7018c, 0x748160b9)},
+          {TOBN(0x03f5b1fa, 0xf380ff62), TOBN(0xef7fb1dd, 0xf3cb2c1e),
+           TOBN(0xeab539a8, 0xfc91a7da), TOBN(0x83ddb707, 0xf3f9b561)}},
+         {{TOBN(0xc550e211, 0xfe7df7a4), TOBN(0xa7cd07f2, 0x063f6f40),
+           TOBN(0xb0de3635, 0x2976879c), TOBN(0xb5f83f85, 0xe55741da)},
+          {TOBN(0x4ea9d25e, 0xf3d8ac3d), TOBN(0x6fe2066f, 0x62819f02),
+           TOBN(0x4ab2b9c2, 0xcef4a564), TOBN(0x1e155d96, 0x5ffa2de3)}},
+         {{TOBN(0x0eb0a19b, 0xc3a72d00), TOBN(0x4037665b, 0x8513c31b),
+           TOBN(0x2fb2b6bf, 0x04c64637), TOBN(0x45c34d6e, 0x08cdc639)},
+          {TOBN(0x56f1e10f, 0xf01fd796), TOBN(0x4dfb8101, 0xfe3667b8),
+           TOBN(0xe0eda253, 0x9021d0c0), TOBN(0x7a94e9ff, 0x8a06c6ab)}},
+         {{TOBN(0x2d3bb0d9, 0xbb9aa882), TOBN(0xea20e4e5, 0xec05fd10),
+           TOBN(0xed7eeb5f, 0x1a1ca64e), TOBN(0x2fa6b43c, 0xc6327cbd)},
+          {TOBN(0xb577e3cf, 0x3aa91121), TOBN(0x8c6bd5ea, 0x3a34079b),
+           TOBN(0xd7e5ba39, 0x60e02fc0), TOBN(0xf16dd2c3, 0x90141bf8)}},
+         {{TOBN(0xb57276d9, 0x80101b98), TOBN(0x760883fd, 0xb82f0f66),
+           TOBN(0x89d7de75, 0x4bc3eff3), TOBN(0x03b60643, 0x5dc2ab40)},
+          {TOBN(0xcd6e53df, 0xe05beeac), TOBN(0xf2f1e862, 0xbc3325cd),
+           TOBN(0xdd0f7921, 0x774f03c3), TOBN(0x97ca7221, 0x4552cc1b)}},
+         {{TOBN(0x5a0d6afe, 0x1cd19f72), TOBN(0xa20915dc, 0xf183fbeb),
+           TOBN(0x9fda4b40, 0x832c403c), TOBN(0x32738edd, 0xbe425442)},
+          {TOBN(0x469a1df6, 0xb5eccf1a), TOBN(0x4b5aff42, 0x28bbe1f0),
+           TOBN(0x31359d7f, 0x570dfc93), TOBN(0xa18be235, 0xf0088628)}},
+         {{TOBN(0xa5b30fba, 0xb00ed3a9), TOBN(0x34c61374, 0x73cdf8be),
+           TOBN(0x2c5c5f46, 0xabc56797), TOBN(0x5cecf93d, 0xb82a8ae2)},
+          {TOBN(0x7d3dbe41, 0xa968fbf0), TOBN(0xd23d4583, 0x1a5c7f3d),
+           TOBN(0xf28f69a0, 0xc087a9c7), TOBN(0xc2d75471, 0x474471ca)}},
+         {{TOBN(0x36ec9f4a, 0x4eb732ec), TOBN(0x6c943bbd, 0xb1ca6bed),
+           TOBN(0xd64535e1, 0xf2457892), TOBN(0x8b84a8ea, 0xf7e2ac06)},
+          {TOBN(0xe0936cd3, 0x2499dd5f), TOBN(0x12053d7e, 0x0ed04e57),
+           TOBN(0x4bdd0076, 0xe4305d9d), TOBN(0x34a527b9, 0x1f67f0a2)}},
+         {{TOBN(0xe79a4af0, 0x9cec46ea), TOBN(0xb15347a1, 0x658b9bc7),
+           TOBN(0x6bd2796f, 0x35af2f75), TOBN(0xac957990, 0x4051c435)},
+          {TOBN(0x2669dda3, 0xc33a655d), TOBN(0x5d503c2e, 0x88514aa3),
+           TOBN(0xdfa11337, 0x3753dd41), TOBN(0x3f054673, 0x0b754f78)}},
+         {{TOBN(0xbf185677, 0x496125bd), TOBN(0xfb0023c8, 0x3775006c),
+           TOBN(0xfa0f072f, 0x3a037899), TOBN(0x4222b6eb, 0x0e4aea57)},
+          {TOBN(0x3dde5e76, 0x7866d25a), TOBN(0xb6eb04f8, 0x4837aa6f),
+           TOBN(0x5315591a, 0x2cf1cdb8), TOBN(0x6dfb4f41, 0x2d4e683c)}},
+         {{TOBN(0x7e923ea4, 0x48ee1f3a), TOBN(0x9604d9f7, 0x05a2afd5),
+           TOBN(0xbe1d4a33, 0x40ea4948), TOBN(0x5b45f1f4, 0xb44cbd2f)},
+          {TOBN(0x5faf8376, 0x4acc757e), TOBN(0xa7cf9ab8, 0x63d68ff7),
+           TOBN(0x8ad62f69, 0xdf0e404b), TOBN(0xd65f33c2, 0x12bdafdf)}},
+         {{TOBN(0xc365de15, 0xa377b14e), TOBN(0x6bf5463b, 0x8e39f60c),
+           TOBN(0x62030d2d, 0x2ce68148), TOBN(0xd95867ef, 0xe6f843a8)},
+          {TOBN(0xd39a0244, 0xef5ab017), TOBN(0x0bd2d8c1, 0x4ab55d12),
+           TOBN(0xc9503db3, 0x41639169), TOBN(0x2d4e25b0, 0xf7660c8a)}},
+         {{TOBN(0x760cb3b5, 0xe224c5d7), TOBN(0xfa3baf8c, 0x68616919),
+           TOBN(0x9fbca113, 0x8d142552), TOBN(0x1ab18bf1, 0x7669ebf5)},
+          {TOBN(0x55e6f53e, 0x9bdf25dd), TOBN(0x04cc0bf3, 0xcb6cd154),
+           TOBN(0x595bef49, 0x95e89080), TOBN(0xfe9459a8, 0x104a9ac1)}},
+         {{TOBN(0xad2d89ca, 0xcce9bb32), TOBN(0xddea65e1, 0xf7de8285),
+           TOBN(0x62ed8c35, 0xb351bd4b), TOBN(0x4150ff36, 0x0c0e19a7)},
+          {TOBN(0x86e3c801, 0x345f4e47), TOBN(0x3bf21f71, 0x203a266c),
+           TOBN(0x7ae110d4, 0x855b1f13), TOBN(0x5d6aaf6a, 0x07262517)}},
+         {{TOBN(0x1e0f12e1, 0x813d28f1), TOBN(0x6000e11d, 0x7ad7a523),
+           TOBN(0xc7d8deef, 0xc744a17b), TOBN(0x1e990b48, 0x14c05a00)},
+          {TOBN(0x68fddaee, 0x93e976d5), TOBN(0x696241d1, 0x46610d63),
+           TOBN(0xb204e7c3, 0x893dda88), TOBN(0x8bccfa65, 0x6a3a6946)}},
+         {{TOBN(0xb59425b4, 0xc5cd1411), TOBN(0x701b4042, 0xff3658b1),
+           TOBN(0xe3e56bca, 0x4784cf93), TOBN(0x27de5f15, 0x8fe68d60)},
+          {TOBN(0x4ab9cfce, 0xf8d53f19), TOBN(0xddb10311, 0xa40a730d),
+           TOBN(0x6fa73cd1, 0x4eee0a8a), TOBN(0xfd548748, 0x5249719d)}},
+         {{TOBN(0x49d66316, 0xa8123ef0), TOBN(0x73c32db4, 0xe7f95438),
+           TOBN(0x2e2ed209, 0x0d9e7854), TOBN(0xf98a9329, 0x9d9f0507)},
+          {TOBN(0xc5d33cf6, 0x0c6aa20a), TOBN(0x9a32ba14, 0x75279bb2),
+           TOBN(0x7e3202cb, 0x774a7307), TOBN(0x64ed4bc4, 0xe8c42dbd)}},
+         {{TOBN(0xc20f1a06, 0xd4caed0d), TOBN(0xb8021407, 0x171d22b3),
+           TOBN(0xd426ca04, 0xd13268d7), TOBN(0x92377007, 0x25f4d126)},
+          {TOBN(0x4204cbc3, 0x71f21a85), TOBN(0x18461b7a, 0xf82369ba),
+           TOBN(0xc0c07d31, 0x3fc858f9), TOBN(0x5deb5a50, 0xe2bab569)}},
+         {{TOBN(0xd5959d46, 0xd5eea89e), TOBN(0xfdff8424, 0x08437f4b),
+           TOBN(0xf21071e4, 0x3cfe254f), TOBN(0x72417696, 0x95468321)},
+          {TOBN(0x5d8288b9, 0x102cae3e), TOBN(0x2d143e3d, 0xf1965dff),
+           TOBN(0x00c9a376, 0xa078d847), TOBN(0x6fc0da31, 0x26028731)}},
+         {{TOBN(0xa2baeadf, 0xe45083a2), TOBN(0x66bc7218, 0x5e5b4bcd),
+           TOBN(0x2c826442, 0xd04b8e7f), TOBN(0xc19f5451, 0x6c4b586b)},
+          {TOBN(0x60182c49, 0x5b7eeed5), TOBN(0xd9954ecd, 0x7aa9dfa1),
+           TOBN(0xa403a8ec, 0xc73884ad), TOBN(0x7fb17de2, 0x9bb39041)}},
+         {{TOBN(0x694b64c5, 0xabb020e8), TOBN(0x3d18c184, 0x19c4eec7),
+           TOBN(0x9c4673ef, 0x1c4793e5), TOBN(0xc7b8aeb5, 0x056092e6)},
+          {TOBN(0x3aa1ca43, 0xf0f8c16b), TOBN(0x224ed5ec, 0xd679b2f6),
+           TOBN(0x0d56eeaf, 0x55a205c9), TOBN(0xbfe115ba, 0x4b8e028b)}},
+         {{TOBN(0x97e60849, 0x3927f4fe), TOBN(0xf91fbf94, 0x759aa7c5),
+           TOBN(0x985af769, 0x6be90a51), TOBN(0xc1277b78, 0x78ccb823)},
+          {TOBN(0x395b656e, 0xe7a75952), TOBN(0x00df7de0, 0x928da5f5),
+           TOBN(0x09c23175, 0x4ca4454f), TOBN(0x4ec971f4, 0x7aa2d3c1)}},
+         {{TOBN(0x45c3c507, 0xe75d9ccc), TOBN(0x63b7be8a, 0x3dc90306),
+           TOBN(0x37e09c66, 0x5db44bdc), TOBN(0x50d60da1, 0x6841c6a2)},
+          {TOBN(0x6f9b65ee, 0x08df1b12), TOBN(0x38734879, 0x7ff089df),
+           TOBN(0x9c331a66, 0x3fe8013d), TOBN(0x017f5de9, 0x5f42fcc8)}},
+         {{TOBN(0x43077866, 0xe8e57567), TOBN(0xc9f781ce, 0xf9fcdb18),
+           TOBN(0x38131dda, 0x9b12e174), TOBN(0x25d84aa3, 0x8a03752a)},
+          {TOBN(0x45e09e09, 0x4d0c0ce2), TOBN(0x1564008b, 0x92bebba5),
+           TOBN(0xf7e8ad31, 0xa87284c7), TOBN(0xb7c4b46c, 0x97e7bbaa)}},
+         {{TOBN(0x3e22a7b3, 0x97acf4ec), TOBN(0x0426c400, 0x5ea8b640),
+           TOBN(0x5e3295a6, 0x4e969285), TOBN(0x22aabc59, 0xa6a45670)},
+          {TOBN(0xb929714c, 0x5f5942bc), TOBN(0x9a6168bd, 0xfa3182ed),
+           TOBN(0x2216a665, 0x104152ba), TOBN(0x46908d03, 0xb6926368)}}},
+        {{{TOBN(0xa9f5d874, 0x5a1251fb), TOBN(0x967747a8, 0xc72725c7),
+           TOBN(0x195c33e5, 0x31ffe89e), TOBN(0x609d210f, 0xe964935e)},
+          {TOBN(0xcafd6ca8, 0x2fe12227), TOBN(0xaf9b5b96, 0x0426469d),
+           TOBN(0x2e9ee04c, 0x5693183c), TOBN(0x1084a333, 0xc8146fef)}},
+         {{TOBN(0x96649933, 0xaed1d1f7), TOBN(0x566eaff3, 0x50563090),
+           TOBN(0x345057f0, 0xad2e39cf), TOBN(0x148ff65b, 0x1f832124)},
+          {TOBN(0x042e89d4, 0xcf94cf0d), TOBN(0x319bec84, 0x520c58b3),
+           TOBN(0x2a267626, 0x5361aa0d), TOBN(0xc86fa302, 0x8fbc87ad)}},
+         {{TOBN(0xfc83d2ab, 0x5c8b06d5), TOBN(0xb1a785a2, 0xfe4eac46),
+           TOBN(0xb99315bc, 0x846f7779), TOBN(0xcf31d816, 0xef9ea505)},
+          {TOBN(0x2391fe6a, 0x15d7dc85), TOBN(0x2f132b04, 0xb4016b33),
+           TOBN(0x29547fe3, 0x181cb4c7), TOBN(0xdb66d8a6, 0x650155a1)}},
+         {{TOBN(0x6b66d7e1, 0xadc1696f), TOBN(0x98ebe593, 0x0acd72d0),
+           TOBN(0x65f24550, 0xcc1b7435), TOBN(0xce231393, 0xb4b9a5ec)},
+          {TOBN(0x234a22d4, 0xdb067df9), TOBN(0x98dda095, 0xcaff9b00),
+           TOBN(0x1bbc75a0, 0x6100c9c1), TOBN(0x1560a9c8, 0x939cf695)}},
+         {{TOBN(0xcf006d3e, 0x99e0925f), TOBN(0x2dd74a96, 0x6322375a),
+           TOBN(0xc58b446a, 0xb56af5ba), TOBN(0x50292683, 0xe0b9b4f1)},
+          {TOBN(0xe2c34cb4, 0x1aeaffa3), TOBN(0x8b17203f, 0x9b9587c1),
+           TOBN(0x6d559207, 0xead1350c), TOBN(0x2b66a215, 0xfb7f9604)}},
+         {{TOBN(0x0850325e, 0xfe51bf74), TOBN(0x9c4f579e, 0x5e460094),
+           TOBN(0x5c87b92a, 0x76da2f25), TOBN(0x889de4e0, 0x6febef33)},
+          {TOBN(0x6900ec06, 0x646083ce), TOBN(0xbe2a0335, 0xbfe12773),
+           TOBN(0xadd1da35, 0xc5344110), TOBN(0x757568b7, 0xb802cd20)}},
+         {{TOBN(0x75559779, 0x00f7e6c8), TOBN(0x38e8b94f, 0x0facd2f0),
+           TOBN(0xfea1f3af, 0x03fde375), TOBN(0x5e11a1d8, 0x75881dfc)},
+          {TOBN(0xb3a6b02e, 0xc1e2f2ef), TOBN(0x193d2bbb, 0xc605a6c5),
+           TOBN(0x325ffeee, 0x339a0b2d), TOBN(0x27b6a724, 0x9e0c8846)}},
+         {{TOBN(0xe4050f1c, 0xf1c367ca), TOBN(0x9bc85a9b, 0xc90fbc7d),
+           TOBN(0xa373c4a2, 0xe1a11032), TOBN(0xb64232b7, 0xad0393a9)},
+          {TOBN(0xf5577eb0, 0x167dad29), TOBN(0x1604f301, 0x94b78ab2),
+           TOBN(0x0baa94af, 0xe829348b), TOBN(0x77fbd8dd, 0x41654342)}},
+         {{TOBN(0xdab50ea5, 0xb964e39a), TOBN(0xd4c29e3c, 0xd0d3c76e),
+           TOBN(0x80dae67c, 0x56d11964), TOBN(0x7307a8bf, 0xe5ffcc2f)},
+          {TOBN(0x65bbc1aa, 0x91708c3b), TOBN(0xa151e62c, 0x28bf0eeb),
+           TOBN(0x6cb53381, 0x6fa34db7), TOBN(0x5139e05c, 0xa29403a8)}},
+         {{TOBN(0x6ff651b4, 0x94a7cd2e), TOBN(0x5671ffd1, 0x0699336c),
+           TOBN(0x6f5fd2cc, 0x979a896a), TOBN(0x11e893a8, 0xd8148cef)},
+          {TOBN(0x988906a1, 0x65cf7b10), TOBN(0x81b67178, 0xc50d8485),
+           TOBN(0x7c0deb35, 0x8a35b3de), TOBN(0x423ac855, 0xc1d29799)}},
+         {{TOBN(0xaf580d87, 0xdac50b74), TOBN(0x28b2b89f, 0x5869734c),
+           TOBN(0x99a3b936, 0x874e28fb), TOBN(0xbb2c9190, 0x25f3f73a)},
+          {TOBN(0x199f6918, 0x84a9d5b7), TOBN(0x7ebe2325, 0x7e770374),
+           TOBN(0xf442e107, 0x0738efe2), TOBN(0xcf9f3f56, 0xcf9082d2)}},
+         {{TOBN(0x719f69e1, 0x09618708), TOBN(0xcc9e8364, 0xc183f9b1),
+           TOBN(0xec203a95, 0x366a21af), TOBN(0x6aec5d6d, 0x068b141f)},
+          {TOBN(0xee2df78a, 0x994f04e9), TOBN(0xb39ccae8, 0x271245b0),
+           TOBN(0xb875a4a9, 0x97e43f4f), TOBN(0x507dfe11, 0xdb2cea98)}},
+         {{TOBN(0x4fbf81cb, 0x489b03e9), TOBN(0xdb86ec5b, 0x6ec414fa),
+           TOBN(0xfad444f9, 0xf51b3ae5), TOBN(0xca7d33d6, 0x1914e3fe)},
+          {TOBN(0xa9c32f5c, 0x0ae6c4d0), TOBN(0xa9ca1d1e, 0x73969568),
+           TOBN(0x98043c31, 0x1aa7467e), TOBN(0xe832e75c, 0xe21b5ac6)}},
+         {{TOBN(0x314b7aea, 0x5232123d), TOBN(0x08307c8c, 0x65ae86db),
+           TOBN(0x06e7165c, 0xaa4668ed), TOBN(0xb170458b, 0xb4d3ec39)},
+          {TOBN(0x4d2e3ec6, 0xc19bb986), TOBN(0xc5f34846, 0xae0304ed),
+           TOBN(0x917695a0, 0x6c9f9722), TOBN(0x6c7f7317, 0x4cab1c0a)}},
+         {{TOBN(0x6295940e, 0x9d6d2e8b), TOBN(0xd318b8c1, 0x549f7c97),
+           TOBN(0x22453204, 0x97713885), TOBN(0x468d834b, 0xa8a440fe)},
+          {TOBN(0xd81fe5b2, 0xbfba796e), TOBN(0x152364db, 0x6d71f116),
+           TOBN(0xbb8c7c59, 0xb5b66e53), TOBN(0x0b12c61b, 0x2641a192)}},
+         {{TOBN(0x31f14802, 0xfcf0a7fd), TOBN(0x42fd0789, 0x5488b01e),
+           TOBN(0x71d78d6d, 0x9952b498), TOBN(0x8eb572d9, 0x07ac5201)},
+          {TOBN(0xe0a2a44c, 0x4d194a88), TOBN(0xd2b63fd9, 0xba017e66),
+           TOBN(0x78efc6c8, 0xf888aefc), TOBN(0xb76f6bda, 0x4a881a11)}},
+         {{TOBN(0x187f314b, 0xb46c2397), TOBN(0x004cf566, 0x5ded2819),
+           TOBN(0xa9ea5704, 0x38764d34), TOBN(0xbba45217, 0x78084709)},
+          {TOBN(0x06474571, 0x1171121e), TOBN(0xad7b7eb1, 0xe7c9b671),
+           TOBN(0xdacfbc40, 0x730f7507), TOBN(0x178cd8c6, 0xc7ad7bd1)}},
+         {{TOBN(0xbf0be101, 0xb2a67238), TOBN(0x3556d367, 0xaf9c14f2),
+           TOBN(0x104b7831, 0xa5662075), TOBN(0x58ca59bb, 0x79d9e60a)},
+          {TOBN(0x4bc45392, 0xa569a73b), TOBN(0x517a52e8, 0x5698f6c9),
+           TOBN(0x85643da5, 0xaeadd755), TOBN(0x1aed0cd5, 0x2a581b84)}},
+         {{TOBN(0xb9b4ff84, 0x80af1372), TOBN(0x244c3113, 0xf1ba5d1f),
+           TOBN(0x2a5dacbe, 0xf5f98d31), TOBN(0x2c3323e8, 0x4375bc2a)},
+          {TOBN(0x17a3ab4a, 0x5594b1dd), TOBN(0xa1928bfb, 0xceb4797e),
+           TOBN(0xe83af245, 0xe4886a19), TOBN(0x8979d546, 0x72b5a74a)}},
+         {{TOBN(0xa0f726bc, 0x19f9e967), TOBN(0xd9d03152, 0xe8fbbf4e),
+           TOBN(0xcfd6f51d, 0xb7707d40), TOBN(0x633084d9, 0x63f6e6e0)},
+          {TOBN(0xedcd9cdc, 0x55667eaf), TOBN(0x73b7f92b, 0x2e44d56f),
+           TOBN(0xfb2e39b6, 0x4e962b14), TOBN(0x7d408f6e, 0xf671fcbf)}},
+         {{TOBN(0xcc634ddc, 0x164a89bb), TOBN(0x74a42bb2, 0x3ef3bd05),
+           TOBN(0x1280dbb2, 0x428decbb), TOBN(0x6103f6bb, 0x402c8596)},
+          {TOBN(0xfa2bf581, 0x355a5752), TOBN(0x562f96a8, 0x00946674),
+           TOBN(0x4e4ca16d, 0x6da0223b), TOBN(0xfe47819f, 0x28d3aa25)}},
+         {{TOBN(0x9eea3075, 0xf8dfcf8a), TOBN(0xa284f0aa, 0x95669825),
+           TOBN(0xb3fca250, 0x867d3fd8), TOBN(0x20757b5f, 0x269d691e)},
+          {TOBN(0xf2c24020, 0x93b8a5de), TOBN(0xd3f93359, 0xebc06da6),
+           TOBN(0x1178293e, 0xb2739c33), TOBN(0xd2a3e770, 0xbcd686e5)}},
+         {{TOBN(0xa76f49f4, 0xcd941534), TOBN(0x0d37406b, 0xe3c71c0e),
+           TOBN(0x172d9397, 0x3b97f7e3), TOBN(0xec17e239, 0xbd7fd0de)},
+          {TOBN(0xe3290551, 0x6f496ba2), TOBN(0x6a693172, 0x36ad50e7),
+           TOBN(0xc4e539a2, 0x83e7eff5), TOBN(0x752737e7, 0x18e1b4cf)}},
+         {{TOBN(0xa2f7932c, 0x68af43ee), TOBN(0x5502468e, 0x703d00bd),
+           TOBN(0xe5dc978f, 0x2fb061f5), TOBN(0xc9a1904a, 0x28c815ad)},
+          {TOBN(0xd3af538d, 0x470c56a4), TOBN(0x159abc5f, 0x193d8ced),
+           TOBN(0x2a37245f, 0x20108ef3), TOBN(0xfa17081e, 0x223f7178)}},
+         {{TOBN(0x27b0fb2b, 0x10c8c0f5), TOBN(0x2102c3ea, 0x40650547),
+           TOBN(0x594564df, 0x8ac3bfa7), TOBN(0x98102033, 0x509dad96)},
+          {TOBN(0x6989643f, 0xf1d18a13), TOBN(0x35eebd91, 0xd7fc5af0),
+           TOBN(0x078d096a, 0xfaeaafd8), TOBN(0xb7a89341, 0xdef3de98)}},
+         {{TOBN(0x2a206e8d, 0xecf2a73a), TOBN(0x066a6397, 0x8e551994),
+           TOBN(0x3a6a088a, 0xb98d53a2), TOBN(0x0ce7c67c, 0x2d1124aa)},
+          {TOBN(0x48cec671, 0x759a113c), TOBN(0xe3b373d3, 0x4f6f67fa),
+           TOBN(0x5455d479, 0xfd36727b), TOBN(0xe5a428ee, 0xa13c0d81)}},
+         {{TOBN(0xb853dbc8, 0x1c86682b), TOBN(0xb78d2727, 0xb8d02b2a),
+           TOBN(0xaaf69bed, 0x8ebc329a), TOBN(0xdb6b40b3, 0x293b2148)},
+          {TOBN(0xe42ea77d, 0xb8c4961f), TOBN(0xb1a12f7c, 0x20e5e0ab),
+           TOBN(0xa0ec5274, 0x79e8b05e), TOBN(0x68027391, 0xfab60a80)}},
+         {{TOBN(0x6bfeea5f, 0x16b1bd5e), TOBN(0xf957e420, 0x4de30ad3),
+           TOBN(0xcbaf664e, 0x6a353b9e), TOBN(0x5c873312, 0x26d14feb)},
+          {TOBN(0x4e87f98c, 0xb65f57cb), TOBN(0xdb60a621, 0x5e0cdd41),
+           TOBN(0x67c16865, 0xa6881440), TOBN(0x1093ef1a, 0x46ab52aa)}},
+         {{TOBN(0xc095afb5, 0x3f4ece64), TOBN(0x6a6bb02e, 0x7604551a),
+           TOBN(0x55d44b4e, 0x0b26b8cd), TOBN(0xe5f9a999, 0xf971268a)},
+          {TOBN(0xc08ec425, 0x11a7de84), TOBN(0x83568095, 0xfda469dd),
+           TOBN(0x737bfba1, 0x6c6c90a2), TOBN(0x1cb9c4a0, 0xbe229831)}},
+         {{TOBN(0x93bccbba, 0xbb2eec64), TOBN(0xa0c23b64, 0xda03adbe),
+           TOBN(0x5f7aa00a, 0xe0e86ac4), TOBN(0x470b941e, 0xfc1401e6)},
+          {TOBN(0x5ad8d679, 0x9df43574), TOBN(0x4ccfb8a9, 0x0f65d810),
+           TOBN(0x1bce80e3, 0xaa7fbd81), TOBN(0x273291ad, 0x9508d20a)}},
+         {{TOBN(0xf5c4b46b, 0x42a92806), TOBN(0x810684ec, 0xa86ab44a),
+           TOBN(0x4591640b, 0xca0bc9f8), TOBN(0xb5efcdfc, 0x5c4b6054)},
+          {TOBN(0x16fc8907, 0x6e9edd12), TOBN(0xe29d0b50, 0xd4d792f9),
+           TOBN(0xa45fd01c, 0x9b03116d), TOBN(0x85035235, 0xc81765a4)}},
+         {{TOBN(0x1fe2a9b2, 0xb4b4b67c), TOBN(0xc1d10df0, 0xe8020604),
+           TOBN(0x9d64abfc, 0xbc8058d8), TOBN(0x8943b9b2, 0x712a0fbb)},
+          {TOBN(0x90eed914, 0x3b3def04), TOBN(0x85ab3aa2, 0x4ce775ff),
+           TOBN(0x605fd4ca, 0x7bbc9040), TOBN(0x8b34a564, 0xe2c75dfb)}},
+         {{TOBN(0x41ffc94a, 0x10358560), TOBN(0x2d8a5072, 0x9e5c28aa),
+           TOBN(0xe915a0fc, 0x4cc7eb15), TOBN(0xe9efab05, 0x8f6d0f5d)},
+          {TOBN(0xdbab47a9, 0xd19e9b91), TOBN(0x8cfed745, 0x0276154c),
+           TOBN(0x154357ae, 0x2cfede0d), TOBN(0x520630df, 0x19f5a4ef)}},
+         {{TOBN(0x25759f7c, 0xe382360f), TOBN(0xb6db05c9, 0x88bf5857),
+           TOBN(0x2917d61d, 0x6c58d46c), TOBN(0x14f8e491, 0xfd20cb7a)},
+          {TOBN(0xb68a727a, 0x11c20340), TOBN(0x0386f86f, 0xaf7ccbb6),
+           TOBN(0x5c8bc6cc, 0xfee09a20), TOBN(0x7d76ff4a, 0xbb7eea35)}},
+         {{TOBN(0xa7bdebe7, 0xdb15be7a), TOBN(0x67a08054, 0xd89f0302),
+           TOBN(0x56bf0ea9, 0xc1193364), TOBN(0xc8244467, 0x62837ebe)},
+          {TOBN(0x32bd8e8b, 0x20d841b8), TOBN(0x127a0548, 0xdbb8a54f),
+           TOBN(0x83dd4ca6, 0x63b20236), TOBN(0x87714718, 0x203491fa)}},
+         {{TOBN(0x4dabcaaa, 0xaa8a5288), TOBN(0x91cc0c8a, 0xaf23a1c9),
+           TOBN(0x34c72c6a, 0x3f220e0c), TOBN(0xbcc20bdf, 0x1232144a)},
+          {TOBN(0x6e2f42da, 0xa20ede1b), TOBN(0xc441f00c, 0x74a00515),
+           TOBN(0xbf46a5b6, 0x734b8c4b), TOBN(0x57409503, 0x7b56c9a4)}},
+         {{TOBN(0x9f735261, 0xe4585d45), TOBN(0x9231faed, 0x6734e642),
+           TOBN(0x1158a176, 0xbe70ee6c), TOBN(0x35f1068d, 0x7c3501bf)},
+          {TOBN(0x6beef900, 0xa2d26115), TOBN(0x649406f2, 0xef0afee3),
+           TOBN(0x3f43a60a, 0xbc2420a1), TOBN(0x509002a7, 0xd5aee4ac)}},
+         {{TOBN(0xb46836a5, 0x3ff3571b), TOBN(0x24f98b78, 0x837927c1),
+           TOBN(0x6254256a, 0x4533c716), TOBN(0xf27abb0b, 0xd07ee196)},
+          {TOBN(0xd7cf64fc, 0x5c6d5bfd), TOBN(0x6915c751, 0xf0cd7a77),
+           TOBN(0xd9f59012, 0x8798f534), TOBN(0x772b0da8, 0xf81d8b5f)}},
+         {{TOBN(0x1244260c, 0x2e03fa69), TOBN(0x36cf0e3a, 0x3be1a374),
+           TOBN(0x6e7c1633, 0xef06b960), TOBN(0xa71a4c55, 0x671f90f6)},
+          {TOBN(0x7a941251, 0x33c673db), TOBN(0xc0bea510, 0x73e8c131),
+           TOBN(0x61a8a699, 0xd4f6c734), TOBN(0x25e78c88, 0x341ed001)}},
+         {{TOBN(0x5c18acf8, 0x8e2f7d90), TOBN(0xfdbf33d7, 0x77be32cd),
+           TOBN(0x0a085cd7, 0xd2eb5ee9), TOBN(0x2d702cfb, 0xb3201115)},
+          {TOBN(0xb6e0ebdb, 0x85c88ce8), TOBN(0x23a3ce3c, 0x1e01d617),
+           TOBN(0x3041618e, 0x567333ac), TOBN(0x9dd0fd8f, 0x157edb6b)}},
+         {{TOBN(0x27f74702, 0xb57872b8), TOBN(0x2ef26b4f, 0x657d5fe1),
+           TOBN(0x95426f0a, 0x57cf3d40), TOBN(0x847e2ad1, 0x65a6067a)},
+          {TOBN(0xd474d9a0, 0x09996a74), TOBN(0x16a56acd, 0x2a26115c),
+           TOBN(0x02a615c3, 0xd16f4d43), TOBN(0xcc3fc965, 0xaadb85b7)}},
+         {{TOBN(0x386bda73, 0xce07d1b0), TOBN(0xd82910c2, 0x58ad4178),
+           TOBN(0x124f82cf, 0xcd2617f4), TOBN(0xcc2f5e8d, 0xef691770)},
+          {TOBN(0x82702550, 0xb8c30ccc), TOBN(0x7b856aea, 0x1a8e575a),
+           TOBN(0xbb822fef, 0xb1ab9459), TOBN(0x085928bc, 0xec24e38e)}},
+         {{TOBN(0x5d0402ec, 0xba8f4b4d), TOBN(0xc07cd4ba, 0x00b4d58b),
+           TOBN(0x5d8dffd5, 0x29227e7a), TOBN(0x61d44d0c, 0x31bf386f)},
+          {TOBN(0xe486dc2b, 0x135e6f4d), TOBN(0x680962eb, 0xe79410ef),
+           TOBN(0xa61bd343, 0xf10088b5), TOBN(0x6aa76076, 0xe2e28686)}},
+         {{TOBN(0x80463d11, 0x8fb98871), TOBN(0xcb26f5c3, 0xbbc76aff),
+           TOBN(0xd4ab8edd, 0xfbe03614), TOBN(0xc8eb579b, 0xc0cf2dee)},
+          {TOBN(0xcc004c15, 0xc93bae41), TOBN(0x46fbae5d, 0x3aeca3b2),
+           TOBN(0x671235cf, 0x0f1e9ab1), TOBN(0xadfba934, 0x9ec285c1)}},
+         {{TOBN(0x88ded013, 0xf216c980), TOBN(0xc8ac4fb8, 0xf79e0bc1),
+           TOBN(0xa29b89c6, 0xfb97a237), TOBN(0xb697b780, 0x9922d8e7)},
+          {TOBN(0x3142c639, 0xddb945b5), TOBN(0x447b06c7, 0xe094c3a9),
+           TOBN(0xcdcb3642, 0x72266c90), TOBN(0x633aad08, 0xa9385046)}},
+         {{TOBN(0xa36c936b, 0xb57c6477), TOBN(0x871f8b64, 0xe94dbcc6),
+           TOBN(0x28d0fb62, 0xa591a67b), TOBN(0x9d40e081, 0xc1d926f5)},
+          {TOBN(0x3111eaf6, 0xf2d84b5a), TOBN(0x228993f9, 0xa565b644),
+           TOBN(0x0ccbf592, 0x2c83188b), TOBN(0xf87b30ab, 0x3df3e197)}},
+         {{TOBN(0xb8658b31, 0x7642bca8), TOBN(0x1a032d7f, 0x52800f17),
+           TOBN(0x051dcae5, 0x79bf9445), TOBN(0xeba6b8ee, 0x54a2e253)},
+          {TOBN(0x5c8b9cad, 0xd4485692), TOBN(0x84bda40e, 0x8986e9be),
+           TOBN(0xd16d16a4, 0x2f0db448), TOBN(0x8ec80050, 0xa14d4188)}},
+         {{TOBN(0xb2b26107, 0x98fa7aaa), TOBN(0x41209ee4, 0xf073aa4e),
+           TOBN(0xf1570359, 0xf2d6b19b), TOBN(0xcbe6868c, 0xfc577caf)},
+          {TOBN(0x186c4bdc, 0x32c04dd3), TOBN(0xa6c35fae, 0xcfeee397),
+           TOBN(0xb4a1b312, 0xf086c0cf), TOBN(0xe0a5ccc6, 0xd9461fe2)}},
+         {{TOBN(0xc32278aa, 0x1536189f), TOBN(0x1126c55f, 0xba6df571),
+           TOBN(0x0f71a602, 0xb194560e), TOBN(0x8b2d7405, 0x324bd6e1)},
+          {TOBN(0x8481939e, 0x3738be71), TOBN(0xb5090b1a, 0x1a4d97a9),
+           TOBN(0x116c65a3, 0xf05ba915), TOBN(0x21863ad3, 0xaae448aa)}},
+         {{TOBN(0xd24e2679, 0xa7aae5d3), TOBN(0x7076013d, 0x0de5c1c4),
+           TOBN(0x2d50f8ba, 0xbb05b629), TOBN(0x73c1abe2, 0x6e66efbb)},
+          {TOBN(0xefd4b422, 0xf2488af7), TOBN(0xe4105d02, 0x663ba575),
+           TOBN(0x7eb60a8b, 0x53a69457), TOBN(0x62210008, 0xc945973b)}},
+         {{TOBN(0xfb255478, 0x77a50ec6), TOBN(0xbf0392f7, 0x0a37a72c),
+           TOBN(0xa0a7a19c, 0x4be18e7a), TOBN(0x90d8ea16, 0x25b1e0af)},
+          {TOBN(0x7582a293, 0xef953f57), TOBN(0x90a64d05, 0xbdc5465a),
+           TOBN(0xca79c497, 0xe2510717), TOBN(0x560dbb7c, 0x18cb641f)}},
+         {{TOBN(0x1d8e3286, 0x4b66abfb), TOBN(0xd26f52e5, 0x59030900),
+           TOBN(0x1ee3f643, 0x5584941a), TOBN(0x6d3b3730, 0x569f5958)},
+          {TOBN(0x9ff2a62f, 0x4789dba5), TOBN(0x91fcb815, 0x72b5c9b7),
+           TOBN(0xf446cb7d, 0x6c8f9a0e), TOBN(0x48f625c1, 0x39b7ecb5)}},
+         {{TOBN(0xbabae801, 0x1c6219b8), TOBN(0xe7a562d9, 0x28ac2f23),
+           TOBN(0xe1b48732, 0x26e20588), TOBN(0x06ee1cad, 0x775af051)},
+          {TOBN(0xda29ae43, 0xfaff79f7), TOBN(0xc141a412, 0x652ee9e0),
+           TOBN(0x1e127f6f, 0x195f4bd0), TOBN(0x29c6ab4f, 0x072f34f8)}},
+         {{TOBN(0x7b7c1477, 0x30448112), TOBN(0x82b51af1, 0xe4a38656),
+           TOBN(0x2bf2028a, 0x2f315010), TOBN(0xc9a4a01f, 0x6ea88cd4)},
+          {TOBN(0xf63e95d8, 0x257e5818), TOBN(0xdd8efa10, 0xb4519b16),
+           TOBN(0xed8973e0, 0x0da910bf), TOBN(0xed49d077, 0x5c0fe4a9)}},
+         {{TOBN(0xac3aac5e, 0xb7caee1e), TOBN(0x1033898d, 0xa7f4da57),
+           TOBN(0x42145c0e, 0x5c6669b9), TOBN(0x42daa688, 0xc1aa2aa0)},
+          {TOBN(0x629cc15c, 0x1a1d885a), TOBN(0x25572ec0, 0xf4b76817),
+           TOBN(0x8312e435, 0x9c8f8f28), TOBN(0x8107f8cd, 0x81965490)}},
+         {{TOBN(0x516ff3a3, 0x6fa6110c), TOBN(0x74fb1eb1, 0xfb93561f),
+           TOBN(0x6c0c9047, 0x8457522b), TOBN(0xcfd32104, 0x6bb8bdc6)},
+          {TOBN(0x2d6884a2, 0xcc80ad57), TOBN(0x7c27fc35, 0x86a9b637),
+           TOBN(0x3461baed, 0xadf4e8cd), TOBN(0x1d56251a, 0x617242f0)}},
+         {{TOBN(0x0b80d209, 0xc955bef4), TOBN(0xdf02cad2, 0x06adb047),
+           TOBN(0xf0d7cb91, 0x5ec74fee), TOBN(0xd2503375, 0x1111ba44)},
+          {TOBN(0x9671755e, 0xdf53cb36), TOBN(0x54dcb612, 0x3368551b),
+           TOBN(0x66d69aac, 0xc8a025a4), TOBN(0x6be946c6, 0xe77ef445)}},
+         {{TOBN(0x719946d1, 0xa995e094), TOBN(0x65e848f6, 0xe51e04d8),
+           TOBN(0xe62f3300, 0x6a1e3113), TOBN(0x1541c7c1, 0x501de503)},
+          {TOBN(0x4daac9fa, 0xf4acfade), TOBN(0x0e585897, 0x44cd0b71),
+           TOBN(0x544fd869, 0x0a51cd77), TOBN(0x60fc20ed, 0x0031016d)}},
+         {{TOBN(0x58b404ec, 0xa4276867), TOBN(0x46f6c3cc, 0x34f34993),
+           TOBN(0x477ca007, 0xc636e5bd), TOBN(0x8018f5e5, 0x7c458b47)},
+          {TOBN(0xa1202270, 0xe47b668f), TOBN(0xcef48ccd, 0xee14f203),
+           TOBN(0x23f98bae, 0x62ff9b4d), TOBN(0x55acc035, 0xc589eddd)}},
+         {{TOBN(0x3fe712af, 0x64db4444), TOBN(0x19e9d634, 0xbecdd480),
+           TOBN(0xe08bc047, 0xa930978a), TOBN(0x2dbf24ec, 0xa1280733)},
+          {TOBN(0x3c0ae38c, 0x2cd706b2), TOBN(0x5b012a5b, 0x359017b9),
+           TOBN(0x3943c38c, 0x72e0f5ae), TOBN(0x786167ea, 0x57176fa3)}},
+         {{TOBN(0xe5f9897d, 0x594881dc), TOBN(0x6b5efad8, 0xcfb820c1),
+           TOBN(0xb2179093, 0xd55018de), TOBN(0x39ad7d32, 0x0bac56ce)},
+          {TOBN(0xb55122e0, 0x2cfc0e81), TOBN(0x117c4661, 0xf6d89daa),
+           TOBN(0x362d01e1, 0xcb64fa09), TOBN(0x6a309b4e, 0x3e9c4ddd)}},
+         {{TOBN(0xfa979fb7, 0xabea49b1), TOBN(0xb4b1d27d, 0x10e2c6c5),
+           TOBN(0xbd61c2c4, 0x23afde7a), TOBN(0xeb6614f8, 0x9786d358)},
+          {TOBN(0x4a5d816b, 0x7f6f7459), TOBN(0xe431a44f, 0x09360e7b),
+           TOBN(0x8c27a032, 0xc309914c), TOBN(0xcea5d68a, 0xcaede3d8)}},
+         {{TOBN(0x3668f665, 0x3a0a3f95), TOBN(0x89369416, 0x7ceba27b),
+           TOBN(0x89981fad, 0xe4728fe9), TOBN(0x7102c8a0, 0x8a093562)},
+          {TOBN(0xbb80310e, 0x235d21c8), TOBN(0x505e55d1, 0xbefb7f7b),
+           TOBN(0xa0a90811, 0x12958a67), TOBN(0xd67e106a, 0x4d851fef)}},
+         {{TOBN(0xb84011a9, 0x431dd80e), TOBN(0xeb7c7cca, 0x73306cd9),
+           TOBN(0x20fadd29, 0xd1b3b730), TOBN(0x83858b5b, 0xfe37b3d3)},
+          {TOBN(0xbf4cd193, 0xb6251d5c), TOBN(0x1cca1fd3, 0x1352d952),
+           TOBN(0xc66157a4, 0x90fbc051), TOBN(0x7990a638, 0x89b98636)}}},
+        {{{TOBN(0xe5aa692a, 0x87dec0e1), TOBN(0x010ded8d, 0xf7b39d00),
+           TOBN(0x7b1b80c8, 0x54cfa0b5), TOBN(0x66beb876, 0xa0f8ea28)},
+          {TOBN(0x50d7f531, 0x3476cd0e), TOBN(0xa63d0e65, 0xb08d3949),
+           TOBN(0x1a09eea9, 0x53479fc6), TOBN(0x82ae9891, 0xf499e742)}},
+         {{TOBN(0xab58b910, 0x5ca7d866), TOBN(0x582967e2, 0x3adb3b34),
+           TOBN(0x89ae4447, 0xcceac0bc), TOBN(0x919c667c, 0x7bf56af5)},
+          {TOBN(0x9aec17b1, 0x60f5dcd7), TOBN(0xec697b9f, 0xddcaadbc),
+           TOBN(0x0b98f341, 0x463467f5), TOBN(0xb187f1f7, 0xa967132f)}},
+         {{TOBN(0x90fe7a1d, 0x214aeb18), TOBN(0x1506af3c, 0x741432f7),
+           TOBN(0xbb5565f9, 0xe591a0c4), TOBN(0x10d41a77, 0xb44f1bc3)},
+          {TOBN(0xa09d65e4, 0xa84bde96), TOBN(0x42f060d8, 0xf20a6a1c),
+           TOBN(0x652a3bfd, 0xf27f9ce7), TOBN(0xb6bdb65c, 0x3b3d739f)}},
+         {{TOBN(0xeb5ddcb6, 0xec7fae9f), TOBN(0x995f2714, 0xefb66e5a),
+           TOBN(0xdee95d8e, 0x69445d52), TOBN(0x1b6c2d46, 0x09e27620)},
+          {TOBN(0x32621c31, 0x8129d716), TOBN(0xb03909f1, 0x0958c1aa),
+           TOBN(0x8c468ef9, 0x1af4af63), TOBN(0x162c429f, 0xfba5cdf6)}},
+         {{TOBN(0x2f682343, 0x753b9371), TOBN(0x29cab45a, 0x5f1f9cd7),
+           TOBN(0x571623ab, 0xb245db96), TOBN(0xc507db09, 0x3fd79999)},
+          {TOBN(0x4e2ef652, 0xaf036c32), TOBN(0x86f0cc78, 0x05018e5c),
+           TOBN(0xc10a73d4, 0xab8be350), TOBN(0x6519b397, 0x7e826327)}},
+         {{TOBN(0xe8cb5eef, 0x9c053df7), TOBN(0x8de25b37, 0xb300ea6f),
+           TOBN(0xdb03fa92, 0xc849cffb), TOBN(0x242e43a7, 0xe84169bb)},
+          {TOBN(0xe4fa51f4, 0xdd6f958e), TOBN(0x6925a77f, 0xf4445a8d),
+           TOBN(0xe6e72a50, 0xe90d8949), TOBN(0xc66648e3, 0x2b1f6390)}},
+         {{TOBN(0xb2ab1957, 0x173e460c), TOBN(0x1bbbce75, 0x30704590),
+           TOBN(0xc0a90dbd, 0xdb1c7162), TOBN(0x505e399e, 0x15cdd65d)},
+          {TOBN(0x68434dcb, 0x57797ab7), TOBN(0x60ad35ba, 0x6a2ca8e8),
+           TOBN(0x4bfdb1e0, 0xde3336c1), TOBN(0xbbef99eb, 0xd8b39015)}},
+         {{TOBN(0x6c3b96f3, 0x1711ebec), TOBN(0x2da40f1f, 0xce98fdc4),
+           TOBN(0xb99774d3, 0x57b4411f), TOBN(0x87c8bdf4, 0x15b65bb6)},
+          {TOBN(0xda3a89e3, 0xc2eef12d), TOBN(0xde95bb9b, 0x3c7471f3),
+           TOBN(0x600f225b, 0xd812c594), TOBN(0x54907c5d, 0x2b75a56b)}},
+         {{TOBN(0xa93cc5f0, 0x8db60e35), TOBN(0x743e3cd6, 0xfa833319),
+           TOBN(0x7dad5c41, 0xf81683c9), TOBN(0x70c1e7d9, 0x9c34107e)},
+          {TOBN(0x0edc4a39, 0xa6be0907), TOBN(0x36d47035, 0x86d0b7d3),
+           TOBN(0x8c76da03, 0x272bfa60), TOBN(0x0b4a07ea, 0x0f08a414)}},
+         {{TOBN(0x699e4d29, 0x45c1dd53), TOBN(0xcadc5898, 0x231debb5),
+           TOBN(0xdf49fcc7, 0xa77f00e0), TOBN(0x93057bbf, 0xa73e5a0e)},
+          {TOBN(0x2f8b7ecd, 0x027a4cd1), TOBN(0x114734b3, 0xc614011a),
+           TOBN(0xe7a01db7, 0x67677c68), TOBN(0x89d9be5e, 0x7e273f4f)}},
+         {{TOBN(0xd225cb2e, 0x089808ef), TOBN(0xf1f7a27d, 0xd59e4107),
+           TOBN(0x53afc761, 0x8211b9c9), TOBN(0x0361bc67, 0xe6819159)},
+          {TOBN(0x2a865d0b, 0x7f071426), TOBN(0x6a3c1810, 0xe7072567),
+           TOBN(0x3e3bca1e, 0x0d6bcabd), TOBN(0xa1b02bc1, 0x408591bc)}},
+         {{TOBN(0xe0deee59, 0x31fba239), TOBN(0xf47424d3, 0x98bd91d1),
+           TOBN(0x0f8886f4, 0x071a3c1d), TOBN(0x3f7d41e8, 0xa819233b)},
+          {TOBN(0x708623c2, 0xcf6eb998), TOBN(0x86bb49af, 0x609a287f),
+           TOBN(0x942bb249, 0x63c90762), TOBN(0x0ef6eea5, 0x55a9654b)}},
+         {{TOBN(0x5f6d2d72, 0x36f5defe), TOBN(0xfa9922dc, 0x56f99176),
+           TOBN(0x6c8c5ece, 0xf78ce0c7), TOBN(0x7b44589d, 0xbe09b55e)},
+          {TOBN(0xe11b3bca, 0x9ea83770), TOBN(0xd7fa2c7f, 0x2ab71547),
+           TOBN(0x2a3dd6fa, 0x2a1ddcc0), TOBN(0x09acb430, 0x5a7b7707)}},
+         {{TOBN(0x4add4a2e, 0x649d4e57), TOBN(0xcd53a2b0, 0x1917526e),
+           TOBN(0xc5262330, 0x20b44ac4), TOBN(0x4028746a, 0xbaa2c31d)},
+          {TOBN(0x51318390, 0x64291d4c), TOBN(0xbf48f151, 0xee5ad909),
+           TOBN(0xcce57f59, 0x7b185681), TOBN(0x7c3ac1b0, 0x4854d442)}},
+         {{TOBN(0x65587dc3, 0xc093c171), TOBN(0xae7acb24, 0x24f42b65),
+           TOBN(0x5a338adb, 0x955996cb), TOBN(0xc8e65675, 0x6051f91b)},
+          {TOBN(0x66711fba, 0x28b8d0b1), TOBN(0x15d74137, 0xb6c10a90),
+           TOBN(0x70cdd7eb, 0x3a232a80), TOBN(0xc9e2f07f, 0x6191ed24)}},
+         {{TOBN(0xa80d1db6, 0xf79588c0), TOBN(0xfa52fc69, 0xb55768cc),
+           TOBN(0x0b4df1ae, 0x7f54438a), TOBN(0x0cadd1a7, 0xf9b46a4f)},
+          {TOBN(0xb40ea6b3, 0x1803dd6f), TOBN(0x488e4fa5, 0x55eaae35),
+           TOBN(0x9f047d55, 0x382e4e16), TOBN(0xc9b5b7e0, 0x2f6e0c98)}},
+         {{TOBN(0x6b1bd2d3, 0x95762649), TOBN(0xa9604ee7, 0xc7aea3f6),
+           TOBN(0x3646ff27, 0x6dc6f896), TOBN(0x9bf0e7f5, 0x2860bad1)},
+          {TOBN(0x2d92c821, 0x7cb44b92), TOBN(0xa2f5ce63, 0xaea9c182),
+           TOBN(0xd0a2afb1, 0x9154a5fd), TOBN(0x482e474c, 0x95801da6)}},
+         {{TOBN(0xc19972d0, 0xb611c24b), TOBN(0x1d468e65, 0x60a8f351),
+           TOBN(0xeb758069, 0x7bcf6421), TOBN(0xec9dd0ee, 0x88fbc491)},
+          {TOBN(0x5b59d2bf, 0x956c2e32), TOBN(0x73dc6864, 0xdcddf94e),
+           TOBN(0xfd5e2321, 0xbcee7665), TOBN(0xa7b4f8ef, 0x5e9a06c4)}},
+         {{TOBN(0xfba918dd, 0x7280f855), TOBN(0xbbaac260, 0x8baec688),
+           TOBN(0xa3b3f00f, 0x33400f42), TOBN(0x3d2dba29, 0x66f2e6e4)},
+          {TOBN(0xb6f71a94, 0x98509375), TOBN(0x8f33031f, 0xcea423cc),
+           TOBN(0x009b8dd0, 0x4807e6fb), TOBN(0x5163cfe5, 0x5cdb954c)}},
+         {{TOBN(0x03cc8f17, 0xcf41c6e8), TOBN(0xf1f03c2a, 0x037b925c),
+           TOBN(0xc39c19cc, 0x66d2427c), TOBN(0x823d24ba, 0x7b6c18e4)},
+          {TOBN(0x32ef9013, 0x901f0b4f), TOBN(0x684360f1, 0xf8941c2e),
+           TOBN(0x0ebaff52, 0x2c28092e), TOBN(0x7891e4e3, 0x256c932f)}},
+         {{TOBN(0x51264319, 0xac445e3d), TOBN(0x553432e7, 0x8ea74381),
+           TOBN(0xe6eeaa69, 0x67e9c50a), TOBN(0x27ced284, 0x62e628c7)},
+          {TOBN(0x3f96d375, 0x7a4afa57), TOBN(0xde0a14c3, 0xe484c150),
+           TOBN(0x364a24eb, 0x38bd9923), TOBN(0x1df18da0, 0xe5177422)}},
+         {{TOBN(0x174e8f82, 0xd8d38a9b), TOBN(0x2e97c600, 0xe7de1391),
+           TOBN(0xc5709850, 0xa1c175dd), TOBN(0x969041a0, 0x32ae5035)},
+          {TOBN(0xcbfd533b, 0x76a2086b), TOBN(0xd6bba71b, 0xd7c2e8fe),
+           TOBN(0xb2d58ee6, 0x099dfb67), TOBN(0x3a8b342d, 0x064a85d9)}},
+         {{TOBN(0x3bc07649, 0x522f9be3), TOBN(0x690c075b, 0xdf1f49a8),
+           TOBN(0x80e1aee8, 0x3854ec42), TOBN(0x2a7dbf44, 0x17689dc7)},
+          {TOBN(0xc004fc0e, 0x3faf4078), TOBN(0xb2f02e9e, 0xdf11862c),
+           TOBN(0xf10a5e0f, 0xa0a1b7b3), TOBN(0x30aca623, 0x8936ec80)}},
+         {{TOBN(0xf83cbf05, 0x02f40d9a), TOBN(0x4681c468, 0x2c318a4d),
+           TOBN(0x98575618, 0x0e9c2674), TOBN(0xbe79d046, 0x1847092e)},
+          {TOBN(0xaf1e480a, 0x78bd01e0), TOBN(0x6dd359e4, 0x72a51db9),
+           TOBN(0x62ce3821, 0xe3afbab6), TOBN(0xc5cee5b6, 0x17733199)}},
+         {{TOBN(0xe08b30d4, 0x6ffd9fbb), TOBN(0x6e5bc699, 0x36c610b7),
+           TOBN(0xf343cff2, 0x9ce262cf), TOBN(0xca2e4e35, 0x68b914c1)},
+          {TOBN(0x011d64c0, 0x16de36c5), TOBN(0xe0b10fdd, 0x42e2b829),
+           TOBN(0x78942981, 0x6685aaf8), TOBN(0xe7511708, 0x230ede97)}},
+         {{TOBN(0x671ed8fc, 0x3b922bf8), TOBN(0xe4d8c0a0, 0x4c29b133),
+           TOBN(0x87eb1239, 0x3b6e99c4), TOBN(0xaff3974c, 0x8793beba)},
+          {TOBN(0x03749405, 0x2c18df9b), TOBN(0xc5c3a293, 0x91007139),
+           TOBN(0x6a77234f, 0xe37a0b95), TOBN(0x02c29a21, 0xb661c96b)}},
+         {{TOBN(0xc3aaf1d6, 0x141ecf61), TOBN(0x9195509e, 0x3bb22f53),
+           TOBN(0x29597404, 0x22d51357), TOBN(0x1b083822, 0x537bed60)},
+          {TOBN(0xcd7d6e35, 0xe07289f0), TOBN(0x1f94c48c, 0x6dd86eff),
+           TOBN(0xc8bb1f82, 0xeb0f9cfa), TOBN(0x9ee0b7e6, 0x1b2eb97d)}},
+         {{TOBN(0x5a52fe2e, 0x34d74e31), TOBN(0xa352c310, 0x3bf79ab6),
+           TOBN(0x97ff6c5a, 0xabfeeb8f), TOBN(0xbfbe8fef, 0xf5c97305)},
+          {TOBN(0xd6081ce6, 0xa7904608), TOBN(0x1f812f3a, 0xc4fca249),
+           TOBN(0x9b24bc9a, 0xb9e5e200), TOBN(0x91022c67, 0x38012ee8)}},
+         {{TOBN(0xe83d9c5d, 0x30a713a1), TOBN(0x4876e3f0, 0x84ef0f93),
+           TOBN(0xc9777029, 0xc1fbf928), TOBN(0xef7a6bb3, 0xbce7d2a4)},
+          {TOBN(0xb8067228, 0xdfa2a659), TOBN(0xd5cd3398, 0xd877a48f),
+           TOBN(0xbea4fd8f, 0x025d0f3f), TOBN(0xd67d2e35, 0x2eae7c2b)}},
+         {{TOBN(0x184de7d7, 0xcc5f4394), TOBN(0xb5551b5c, 0x4536e142),
+           TOBN(0x2e89b212, 0xd34aa60a), TOBN(0x14a96fea, 0xf50051d5)},
+          {TOBN(0x4e21ef74, 0x0d12bb0b), TOBN(0xc522f020, 0x60b9677e),
+           TOBN(0x8b12e467, 0x2df7731d), TOBN(0x39f80382, 0x7b326d31)}},
+         {{TOBN(0xdfb8630c, 0x39024a94), TOBN(0xaacb96a8, 0x97319452),
+           TOBN(0xd68a3961, 0xeda3867c), TOBN(0x0c58e2b0, 0x77c4ffca)},
+          {TOBN(0x3d545d63, 0x4da919fa), TOBN(0xef79b69a, 0xf15e2289),
+           TOBN(0x54bc3d3d, 0x808bab10), TOBN(0xc8ab3007, 0x45f82c37)}},
+         {{TOBN(0xc12738b6, 0x7c4a658a), TOBN(0xb3c47639, 0x40e72182),
+           TOBN(0x3b77be46, 0x8798e44f), TOBN(0xdc047df2, 0x17a7f85f)},
+          {TOBN(0x2439d4c5, 0x5e59d92d), TOBN(0xcedca475, 0xe8e64d8d),
+           TOBN(0xa724cd0d, 0x87ca9b16), TOBN(0x35e4fd59, 0xa5540dfe)}},
+         {{TOBN(0xf8c1ff18, 0xe4bcf6b1), TOBN(0x856d6285, 0x295018fa),
+           TOBN(0x433f665c, 0x3263c949), TOBN(0xa6a76dd6, 0xa1f21409)},
+          {TOBN(0x17d32334, 0xcc7b4f79), TOBN(0xa1d03122, 0x06720e4a),
+           TOBN(0xadb6661d, 0x81d9bed5), TOBN(0xf0d6fb02, 0x11db15d1)}},
+         {{TOBN(0x7fd11ad5, 0x1fb747d2), TOBN(0xab50f959, 0x3033762b),
+           TOBN(0x2a7e711b, 0xfbefaf5a), TOBN(0xc7393278, 0x3fef2bbf)},
+          {TOBN(0xe29fa244, 0x0df6f9be), TOBN(0x9092757b, 0x71efd215),
+           TOBN(0xee60e311, 0x4f3d6fd9), TOBN(0x338542d4, 0x0acfb78b)}},
+         {{TOBN(0x44a23f08, 0x38961a0f), TOBN(0x1426eade, 0x986987ca),
+           TOBN(0x36e6ee2e, 0x4a863cc6), TOBN(0x48059420, 0x628b8b79)},
+          {TOBN(0x30303ad8, 0x7396e1de), TOBN(0x5c8bdc48, 0x38c5aad1),
+           TOBN(0x3e40e11f, 0x5c8f5066), TOBN(0xabd6e768, 0x8d246bbd)}},
+         {{TOBN(0x68aa40bb, 0x23330a01), TOBN(0xd23f5ee4, 0xc34eafa0),
+           TOBN(0x3bbee315, 0x5de02c21), TOBN(0x18dd4397, 0xd1d8dd06)},
+          {TOBN(0x3ba1939a, 0x122d7b44), TOBN(0xe6d3b40a, 0xa33870d6),
+           TOBN(0x8e620f70, 0x1c4fe3f8), TOBN(0xf6bba1a5, 0xd3a50cbf)}},
+         {{TOBN(0x4a78bde5, 0xcfc0aee0), TOBN(0x847edc46, 0xc08c50bd),
+           TOBN(0xbaa2439c, 0xad63c9b2), TOBN(0xceb4a728, 0x10fc2acb)},
+          {TOBN(0xa419e40e, 0x26da033d), TOBN(0x6cc3889d, 0x03e02683),
+           TOBN(0x1cd28559, 0xfdccf725), TOBN(0x0fd7e0f1, 0x8d13d208)}},
+         {{TOBN(0x01b9733b, 0x1f0df9d4), TOBN(0x8cc2c5f3, 0xa2b5e4f3),
+           TOBN(0x43053bfa, 0x3a304fd4), TOBN(0x8e87665c, 0x0a9f1aa7)},
+          {TOBN(0x087f29ec, 0xd73dc965), TOBN(0x15ace455, 0x3e9023db),
+           TOBN(0x2370e309, 0x2bce28b4), TOBN(0xf9723442, 0xb6b1e84a)}},
+         {{TOBN(0xbeee662e, 0xb72d9f26), TOBN(0xb19396de, 0xf0e47109),
+           TOBN(0x85b1fa73, 0xe13289d0), TOBN(0x436cf77e, 0x54e58e32)},
+          {TOBN(0x0ec833b3, 0xe990ef77), TOBN(0x7373e3ed, 0x1b11fc25),
+           TOBN(0xbe0eda87, 0x0fc332ce), TOBN(0xced04970, 0x8d7ea856)}},
+         {{TOBN(0xf85ff785, 0x7e977ca0), TOBN(0xb66ee8da, 0xdfdd5d2b),
+           TOBN(0xf5e37950, 0x905af461), TOBN(0x587b9090, 0x966d487c)},
+          {TOBN(0x6a198a1b, 0x32ba0127), TOBN(0xa7720e07, 0x141615ac),
+           TOBN(0xa23f3499, 0x996ef2f2), TOBN(0xef5f64b4, 0x470bcb3d)}},
+         {{TOBN(0xa526a962, 0x92b8c559), TOBN(0x0c14aac0, 0x69740a0f),
+           TOBN(0x0d41a9e3, 0xa6bdc0a5), TOBN(0x97d52106, 0x9c48aef4)},
+          {TOBN(0xcf16bd30, 0x3e7c253b), TOBN(0xcc834b1a, 0x47fdedc1),
+           TOBN(0x7362c6e5, 0x373aab2e), TOBN(0x264ed85e, 0xc5f590ff)}},
+         {{TOBN(0x7a46d9c0, 0x66d41870), TOBN(0xa50c20b1, 0x4787ba09),
+           TOBN(0x185e7e51, 0xe3d44635), TOBN(0xb3b3e080, 0x31e2d8dc)},
+          {TOBN(0xbed1e558, 0xa179e9d9), TOBN(0x2daa3f79, 0x74a76781),
+           TOBN(0x4372baf2, 0x3a40864f), TOBN(0x46900c54, 0x4fe75cb5)}},
+         {{TOBN(0xb95f171e, 0xf76765d0), TOBN(0x4ad726d2, 0x95c87502),
+           TOBN(0x2ec769da, 0x4d7c99bd), TOBN(0x5e2ddd19, 0xc36cdfa8)},
+          {TOBN(0xc22117fc, 0xa93e6dea), TOBN(0xe8a2583b, 0x93771123),
+           TOBN(0xbe2f6089, 0xfa08a3a2), TOBN(0x4809d5ed, 0x8f0e1112)}},
+         {{TOBN(0x3b414aa3, 0xda7a095e), TOBN(0x9049acf1, 0x26f5aadd),
+           TOBN(0x78d46a4d, 0x6be8b84a), TOBN(0xd66b1963, 0xb732b9b3)},
+          {TOBN(0x5c2ac2a0, 0xde6e9555), TOBN(0xcf52d098, 0xb5bd8770),
+           TOBN(0x15a15fa6, 0x0fd28921), TOBN(0x56ccb81e, 0x8b27536d)}},
+         {{TOBN(0x0f0d8ab8, 0x9f4ccbb8), TOBN(0xed5f44d2, 0xdb221729),
+           TOBN(0x43141988, 0x00bed10c), TOBN(0xc94348a4, 0x1d735b8b)},
+          {TOBN(0x79f3e9c4, 0x29ef8479), TOBN(0x4c13a4e3, 0x614c693f),
+           TOBN(0x32c9af56, 0x8e143a14), TOBN(0xbc517799, 0xe29ac5c4)}},
+         {{TOBN(0x05e17992, 0x2774856f), TOBN(0x6e52fb05, 0x6c1bf55f),
+           TOBN(0xaeda4225, 0xe4f19e16), TOBN(0x70f4728a, 0xaf5ccb26)},
+          {TOBN(0x5d2118d1, 0xb2947f22), TOBN(0xc827ea16, 0x281d6fb9),
+           TOBN(0x8412328d, 0x8cf0eabd), TOBN(0x45ee9fb2, 0x03ef9dcf)}},
+         {{TOBN(0x8e700421, 0xbb937d63), TOBN(0xdf8ff2d5, 0xcc4b37a6),
+           TOBN(0xa4c0d5b2, 0x5ced7b68), TOBN(0x6537c1ef, 0xc7308f59)},
+          {TOBN(0x25ce6a26, 0x3b37f8e8), TOBN(0x170e9a9b, 0xdeebc6ce),
+           TOBN(0xdd037952, 0x8728d72c), TOBN(0x445b0e55, 0x850154bc)}},
+         {{TOBN(0x4b7d0e06, 0x83a7337b), TOBN(0x1e3416d4, 0xffecf249),
+           TOBN(0x24840eff, 0x66a2b71f), TOBN(0xd0d9a50a, 0xb37cc26d)},
+          {TOBN(0xe2198150, 0x6fe28ef7), TOBN(0x3cc5ef16, 0x23324c7f),
+           TOBN(0x220f3455, 0x769b5263), TOBN(0xe2ade2f1, 0xa10bf475)}},
+         {{TOBN(0x28cd20fa, 0x458d3671), TOBN(0x1549722c, 0x2dc4847b),
+           TOBN(0x6dd01e55, 0x591941e3), TOBN(0x0e6fbcea, 0x27128ccb)},
+          {TOBN(0xae1a1e6b, 0x3bef0262), TOBN(0xfa8c472c, 0x8f54e103),
+           TOBN(0x7539c0a8, 0x72c052ec), TOBN(0xd7b27369, 0x5a3490e9)}},
+         {{TOBN(0x143fe1f1, 0x71684349), TOBN(0x36b4722e, 0x32e19b97),
+           TOBN(0xdc059227, 0x90980aff), TOBN(0x175c9c88, 0x9e13d674)},
+          {TOBN(0xa7de5b22, 0x6e6bfdb1), TOBN(0x5ea5b7b2, 0xbedb4b46),
+           TOBN(0xd5570191, 0xd34a6e44), TOBN(0xfcf60d2e, 0xa24ff7e6)}},
+         {{TOBN(0x614a392d, 0x677819e1), TOBN(0x7be74c7e, 0xaa5a29e8),
+           TOBN(0xab50fece, 0x63c85f3f), TOBN(0xaca2e2a9, 0x46cab337)},
+          {TOBN(0x7f700388, 0x122a6fe3), TOBN(0xdb69f703, 0x882a04a8),
+           TOBN(0x9a77935d, 0xcf7aed57), TOBN(0xdf16207c, 0x8d91c86f)}},
+         {{TOBN(0x2fca49ab, 0x63ed9998), TOBN(0xa3125c44, 0xa77ddf96),
+           TOBN(0x05dd8a86, 0x24344072), TOBN(0xa023dda2, 0xfec3fb56)},
+          {TOBN(0x421b41fc, 0x0c743032), TOBN(0x4f2120c1, 0x5e438639),
+           TOBN(0xfb7cae51, 0xc83c1b07), TOBN(0xb2370caa, 0xcac2171a)}},
+         {{TOBN(0x2eb2d962, 0x6cc820fb), TOBN(0x59feee5c, 0xb85a44bf),
+           TOBN(0x94620fca, 0x5b6598f0), TOBN(0x6b922cae, 0x7e314051)},
+          {TOBN(0xff8745ad, 0x106bed4e), TOBN(0x546e71f5, 0xdfa1e9ab),
+           TOBN(0x935c1e48, 0x1ec29487), TOBN(0x9509216c, 0x4d936530)}},
+         {{TOBN(0xc7ca3067, 0x85c9a2db), TOBN(0xd6ae5152, 0x6be8606f),
+           TOBN(0x09dbcae6, 0xe14c651d), TOBN(0xc9536e23, 0x9bc32f96)},
+          {TOBN(0xa90535a9, 0x34521b03), TOBN(0xf39c526c, 0x878756ff),
+           TOBN(0x383172ec, 0x8aedf03c), TOBN(0x20a8075e, 0xefe0c034)}},
+         {{TOBN(0xf22f9c62, 0x64026422), TOBN(0x8dd10780, 0x24b9d076),
+           TOBN(0x944c742a, 0x3bef2950), TOBN(0x55b9502e, 0x88a2b00b)},
+          {TOBN(0xa59e14b4, 0x86a09817), TOBN(0xa39dd3ac, 0x47bb4071),
+           TOBN(0x55137f66, 0x3be0592f), TOBN(0x07fcafd4, 0xc9e63f5b)}},
+         {{TOBN(0x963652ee, 0x346eb226), TOBN(0x7dfab085, 0xec2facb7),
+           TOBN(0x273bf2b8, 0x691add26), TOBN(0x30d74540, 0xf2b46c44)},
+          {TOBN(0x05e8e73e, 0xf2c2d065), TOBN(0xff9b8a00, 0xd42eeac9),
+           TOBN(0x2fcbd205, 0x97209d22), TOBN(0xeb740ffa, 0xde14ea2c)}},
+         {{TOBN(0xc71ff913, 0xa8aef518), TOBN(0x7bfc74bb, 0xfff4cfa2),
+           TOBN(0x1716680c, 0xb6b36048), TOBN(0x121b2cce, 0x9ef79af1)},
+          {TOBN(0xbff3c836, 0xa01eb3d3), TOBN(0x50eb1c6a, 0x5f79077b),
+           TOBN(0xa48c32d6, 0xa004bbcf), TOBN(0x47a59316, 0x7d64f61d)}},
+         {{TOBN(0x6068147f, 0x93102016), TOBN(0x12c5f654, 0x94d12576),
+           TOBN(0xefb071a7, 0xc9bc6b91), TOBN(0x7c2da0c5, 0x6e23ea95)},
+          {TOBN(0xf4fd45b6, 0xd4a1dd5d), TOBN(0x3e7ad9b6, 0x9122b13c),
+           TOBN(0x342ca118, 0xe6f57a48), TOBN(0x1c2e94a7, 0x06f8288f)}},
+         {{TOBN(0x99e68f07, 0x5a97d231), TOBN(0x7c80de97, 0x4d838758),
+           TOBN(0xbce0f5d0, 0x05872727), TOBN(0xbe5d95c2, 0x19c4d016)},
+          {TOBN(0x921d5cb1, 0x9c2492ee), TOBN(0x42192dc1, 0x404d6fb3),
+           TOBN(0x4c84dcd1, 0x32f988d3), TOBN(0xde26d61f, 0xa17b8e85)}},
+         {{TOBN(0xc466dcb6, 0x137c7408), TOBN(0x9a38d7b6, 0x36a266da),
+           TOBN(0x7ef5cb06, 0x83bebf1b), TOBN(0xe5cdcbbf, 0x0fd014e3)},
+          {TOBN(0x30aa376d, 0xf65965a0), TOBN(0x60fe88c2, 0xebb3e95e),
+           TOBN(0x33fd0b61, 0x66ee6f20), TOBN(0x8827dcdb, 0x3f41f0a0)}},
+         {{TOBN(0xbf8a9d24, 0x0c56c690), TOBN(0x40265dad, 0xddb7641d),
+           TOBN(0x522b05bf, 0x3a6b662b), TOBN(0x466d1dfe, 0xb1478c9b)},
+          {TOBN(0xaa616962, 0x1484469b), TOBN(0x0db60549, 0x02df8f9f),
+           TOBN(0xc37bca02, 0x3cb8bf51), TOBN(0x5effe346, 0x21371ce8)}},
+         {{TOBN(0xe8f65264, 0xff112c32), TOBN(0x8a9c736d, 0x7b971fb2),
+           TOBN(0xa4f19470, 0x7b75080d), TOBN(0xfc3f2c5a, 0x8839c59b)},
+          {TOBN(0x1d6c777e, 0x5aeb49c2), TOBN(0xf3db034d, 0xda1addfe),
+           TOBN(0xd76fee5a, 0x5535affc), TOBN(0x0853ac70, 0xb92251fd)}},
+         {{TOBN(0x37e3d594, 0x8b2a29d5), TOBN(0x28f1f457, 0x4de00ddb),
+           TOBN(0x8083c1b5, 0xf42c328b), TOBN(0xd8ef1d8f, 0xe493c73b)},
+          {TOBN(0x96fb6260, 0x41dc61bd), TOBN(0xf74e8a9d, 0x27ee2f8a),
+           TOBN(0x7c605a80, 0x2c946a5d), TOBN(0xeed48d65, 0x3839ccfd)}},
+         {{TOBN(0x9894344f, 0x3a29467a), TOBN(0xde81e949, 0xc51eba6d),
+           TOBN(0xdaea066b, 0xa5e5c2f2), TOBN(0x3fc8a614, 0x08c8c7b3)},
+          {TOBN(0x7adff88f, 0x06d0de9f), TOBN(0xbbc11cf5, 0x3b75ce0a),
+           TOBN(0x9fbb7acc, 0xfbbc87d5), TOBN(0xa1458e26, 0x7badfde2)}}},
+        {{{TOBN(0x1cb43668, 0xe039c256), TOBN(0x5f26fb8b, 0x7c17fd5d),
+           TOBN(0xeee426af, 0x79aa062b), TOBN(0x072002d0, 0xd78fbf04)},
+          {TOBN(0x4c9ca237, 0xe84fb7e3), TOBN(0xb401d8a1, 0x0c82133d),
+           TOBN(0xaaa52592, 0x6d7e4181), TOBN(0xe9430833, 0x73dbb152)}},
+         {{TOBN(0xf92dda31, 0xbe24319a), TOBN(0x03f7d28b, 0xe095a8e7),
+           TOBN(0xa52fe840, 0x98782185), TOBN(0x276ddafe, 0x29c24dbc)},
+          {TOBN(0x80cd5496, 0x1d7a64eb), TOBN(0xe4360889, 0x7f1dbe42),
+           TOBN(0x2f81a877, 0x8438d2d5), TOBN(0x7e4d52a8, 0x85169036)}},
+         {{TOBN(0x19e3d5b1, 0x1d59715d), TOBN(0xc7eaa762, 0xd788983e),
+           TOBN(0xe5a730b0, 0xabf1f248), TOBN(0xfbab8084, 0xfae3fd83)},
+          {TOBN(0x65e50d21, 0x53765b2f), TOBN(0xbdd4e083, 0xfa127f3d),
+           TOBN(0x9cf3c074, 0x397b1b10), TOBN(0x59f8090c, 0xb1b59fd3)}},
+         {{TOBN(0x7b15fd9d, 0x615faa8f), TOBN(0x8fa1eb40, 0x968554ed),
+           TOBN(0x7bb4447e, 0x7aa44882), TOBN(0x2bb2d0d1, 0x029fff32)},
+          {TOBN(0x075e2a64, 0x6caa6d2f), TOBN(0x8eb879de, 0x22e7351b),
+           TOBN(0xbcd5624e, 0x9a506c62), TOBN(0x218eaef0, 0xa87e24dc)}},
+         {{TOBN(0x37e56847, 0x44ddfa35), TOBN(0x9ccfc5c5, 0xdab3f747),
+           TOBN(0x9ac1df3f, 0x1ee96cf4), TOBN(0x0c0571a1, 0x3b480b8f)},
+          {TOBN(0x2fbeb3d5, 0x4b3a7b3c), TOBN(0x35c03669, 0x5dcdbb99),
+           TOBN(0x52a0f5dc, 0xb2415b3a), TOBN(0xd57759b4, 0x4413ed9a)}},
+         {{TOBN(0x1fe647d8, 0x3d30a2c5), TOBN(0x0857f77e, 0xf78a81dc),
+           TOBN(0x11d5a334, 0x131a4a9b), TOBN(0xc0a94af9, 0x29d393f5)},
+          {TOBN(0xbc3a5c0b, 0xdaa6ec1a), TOBN(0xba9fe493, 0x88d2d7ed),
+           TOBN(0xbb4335b4, 0xbb614797), TOBN(0x991c4d68, 0x72f83533)}},
+         {{TOBN(0x53258c28, 0xd2f01cb3), TOBN(0x93d6eaa3, 0xd75db0b1),
+           TOBN(0x419a2b0d, 0xe87d0db4), TOBN(0xa1e48f03, 0xd8fe8493)},
+          {TOBN(0xf747faf6, 0xc508b23a), TOBN(0xf137571a, 0x35d53549),
+           TOBN(0x9f5e58e2, 0xfcf9b838), TOBN(0xc7186cee, 0xa7fd3cf5)}},
+         {{TOBN(0x77b868ce, 0xe978a1d3), TOBN(0xe3a68b33, 0x7ab92d04),
+           TOBN(0x51029794, 0x87a5b862), TOBN(0x5f0606c3, 0x3a61d41d)},
+          {TOBN(0x2814be27, 0x6f9326f1), TOBN(0x2f521c14, 0xc6fe3c2e),
+           TOBN(0x17464d7d, 0xacdf7351), TOBN(0x10f5f9d3, 0x777f7e44)}},
+         {{TOBN(0xce8e616b, 0x269fb37d), TOBN(0xaaf73804, 0x7de62de5),
+           TOBN(0xaba11175, 0x4fdd4153), TOBN(0x515759ba, 0x3770b49b)},
+          {TOBN(0x8b09ebf8, 0xaa423a61), TOBN(0x592245a1, 0xcd41fb92),
+           TOBN(0x1cba8ec1, 0x9b4c8936), TOBN(0xa87e91e3, 0xaf36710e)}},
+         {{TOBN(0x1fd84ce4, 0x3d34a2e3), TOBN(0xee3759ce, 0xb43b5d61),
+           TOBN(0x895bc78c, 0x619186c7), TOBN(0xf19c3809, 0xcbb9725a)},
+          {TOBN(0xc0be21aa, 0xde744b1f), TOBN(0xa7d222b0, 0x60f8056b),
+           TOBN(0x74be6157, 0xb23efe11), TOBN(0x6fab2b4f, 0x0cd68253)}},
+         {{TOBN(0xad33ea5f, 0x4bf1d725), TOBN(0x9c1d8ee2, 0x4f6c950f),
+           TOBN(0x544ee78a, 0xa377af06), TOBN(0x54f489bb, 0x94a113e1)},
+          {TOBN(0x8f11d634, 0x992fb7e8), TOBN(0x0169a7aa, 0xa2a44347),
+           TOBN(0x1d49d4af, 0x95020e00), TOBN(0x95945722, 0xe08e120b)}},
+         {{TOBN(0xb6e33878, 0xa4d32282), TOBN(0xe36e029d, 0x48020ae7),
+           TOBN(0xe05847fb, 0x37a9b750), TOBN(0xf876812c, 0xb29e3819)},
+          {TOBN(0x84ad138e, 0xd23a17f0), TOBN(0x6d7b4480, 0xf0b3950e),
+           TOBN(0xdfa8aef4, 0x2fd67ae0), TOBN(0x8d3eea24, 0x52333af6)}},
+         {{TOBN(0x0d052075, 0xb15d5acc), TOBN(0xc6d9c79f, 0xbd815bc4),
+           TOBN(0x8dcafd88, 0xdfa36cf2), TOBN(0x908ccbe2, 0x38aa9070)},
+          {TOBN(0x638722c4, 0xba35afce), TOBN(0x5a3da8b0, 0xfd6abf0b),
+           TOBN(0x2dce252c, 0xc9c335c1), TOBN(0x84e7f0de, 0x65aa799b)}},
+         {{TOBN(0x2101a522, 0xb99a72cb), TOBN(0x06de6e67, 0x87618016),
+           TOBN(0x5ff8c7cd, 0xe6f3653e), TOBN(0x0a821ab5, 0xc7a6754a)},
+          {TOBN(0x7e3fa52b, 0x7cb0b5a2), TOBN(0xa7fb121c, 0xc9048790),
+           TOBN(0x1a725020, 0x06ce053a), TOBN(0xb490a31f, 0x04e929b0)}},
+         {{TOBN(0xe17be47d, 0x62dd61ad), TOBN(0x781a961c, 0x6be01371),
+           TOBN(0x1063bfd3, 0xdae3cbba), TOBN(0x35647406, 0x7f73c9ba)},
+          {TOBN(0xf50e957b, 0x2736a129), TOBN(0xa6313702, 0xed13f256),
+           TOBN(0x9436ee65, 0x3a19fcc5), TOBN(0xcf2bdb29, 0xe7a4c8b6)}},
+         {{TOBN(0xb06b1244, 0xc5f95cd8), TOBN(0xda8c8af0, 0xf4ab95f4),
+           TOBN(0x1bae59c2, 0xb9e5836d), TOBN(0x07d51e7e, 0x3acffffc)},
+          {TOBN(0x01e15e6a, 0xc2ccbcda), TOBN(0x3bc1923f, 0x8528c3e0),
+           TOBN(0x43324577, 0xa49fead4), TOBN(0x61a1b884, 0x2aa7a711)}},
+         {{TOBN(0xf9a86e08, 0x700230ef), TOBN(0x0af585a1, 0xbd19adf8),
+           TOBN(0x7645f361, 0xf55ad8f2), TOBN(0x6e676223, 0x46c3614c)},
+          {TOBN(0x23cb257c, 0x4e774d3f), TOBN(0x82a38513, 0xac102d1b),
+           TOBN(0x9bcddd88, 0x7b126aa5), TOBN(0xe716998b, 0xeefd3ee4)}},
+         {{TOBN(0x4239d571, 0xfb167583), TOBN(0xdd011c78, 0xd16c8f8a),
+           TOBN(0x271c2895, 0x69a27519), TOBN(0x9ce0a3b7, 0xd2d64b6a)},
+          {TOBN(0x8c977289, 0xd5ec6738), TOBN(0xa3b49f9a, 0x8840ef6b),
+           TOBN(0x808c14c9, 0x9a453419), TOBN(0x5c00295b, 0x0cf0a2d5)}},
+         {{TOBN(0x524414fb, 0x1d4bcc76), TOBN(0xb07691d2, 0x459a88f1),
+           TOBN(0x77f43263, 0xf70d110f), TOBN(0x64ada5e0, 0xb7abf9f3)},
+          {TOBN(0xafd0f94e, 0x5b544cf5), TOBN(0xb4a13a15, 0xfd2713fe),
+           TOBN(0xb99b7d6e, 0x250c74f4), TOBN(0x097f2f73, 0x20324e45)}},
+         {{TOBN(0x994b37d8, 0xaffa8208), TOBN(0xc3c31b0b, 0xdc29aafc),
+           TOBN(0x3da74651, 0x7a3a607f), TOBN(0xd8e1b8c1, 0xfe6955d6)},
+          {TOBN(0x716e1815, 0xc8418682), TOBN(0x541d487f, 0x7dc91d97),
+           TOBN(0x48a04669, 0xc6996982), TOBN(0xf39cab15, 0x83a6502e)}},
+         {{TOBN(0x025801a0, 0xe68db055), TOBN(0xf3569758, 0xba3338d5),
+           TOBN(0xb0c8c0aa, 0xee2afa84), TOBN(0x4f6985d3, 0xfb6562d1)},
+          {TOBN(0x351f1f15, 0x132ed17a), TOBN(0x510ed0b4, 0xc04365fe),
+           TOBN(0xa3f98138, 0xe5b1f066), TOBN(0xbc9d95d6, 0x32df03dc)}},
+         {{TOBN(0xa83ccf6e, 0x19abd09e), TOBN(0x0b4097c1, 0x4ff17edb),
+           TOBN(0x58a5c478, 0xd64a06ce), TOBN(0x2ddcc3fd, 0x544a58fd)},
+          {TOBN(0xd449503d, 0x9e8153b8), TOBN(0x3324fd02, 0x7774179b),
+           TOBN(0xaf5d47c8, 0xdbd9120c), TOBN(0xeb860162, 0x34fa94db)}},
+         {{TOBN(0x5817bdd1, 0x972f07f4), TOBN(0xe5579e2e, 0xd27bbceb),
+           TOBN(0x86847a1f, 0x5f11e5a6), TOBN(0xb39ed255, 0x7c3cf048)},
+          {TOBN(0xe1076417, 0xa2f62e55), TOBN(0x6b9ab38f, 0x1bcf82a2),
+           TOBN(0x4bb7c319, 0x7aeb29f9), TOBN(0xf6d17da3, 0x17227a46)}},
+         {{TOBN(0xab53ddbd, 0x0f968c00), TOBN(0xa03da7ec, 0x000c880b),
+           TOBN(0x7b239624, 0x6a9ad24d), TOBN(0x612c0401, 0x01ec60d0)},
+          {TOBN(0x70d10493, 0x109f5df1), TOBN(0xfbda4030, 0x80af7550),
+           TOBN(0x30b93f95, 0xc6b9a9b3), TOBN(0x0c74ec71, 0x007d9418)}},
+         {{TOBN(0x94175564, 0x6edb951f), TOBN(0x5f4a9d78, 0x7f22c282),
+           TOBN(0xb7870895, 0xb38d1196), TOBN(0xbc593df3, 0xa228ce7c)},
+          {TOBN(0xc78c5bd4, 0x6af3641a), TOBN(0x7802200b, 0x3d9b3dcc),
+           TOBN(0x0dc73f32, 0x8be33304), TOBN(0x847ed87d, 0x61ffb79a)}},
+         {{TOBN(0xf85c974e, 0x6d671192), TOBN(0x1e14100a, 0xde16f60f),
+           TOBN(0x45cb0d5a, 0x95c38797), TOBN(0x18923bba, 0x9b022da4)},
+          {TOBN(0xef2be899, 0xbbe7e86e), TOBN(0x4a1510ee, 0x216067bf),
+           TOBN(0xd98c8154, 0x84d5ce3e), TOBN(0x1af777f0, 0xf92a2b90)}},
+         {{TOBN(0x9fbcb400, 0x4ef65724), TOBN(0x3e04a4c9, 0x3c0ca6fe),
+           TOBN(0xfb3e2cb5, 0x55002994), TOBN(0x1f3a93c5, 0x5363ecab)},
+          {TOBN(0x1fe00efe, 0x3923555b), TOBN(0x744bedd9, 0x1e1751ea),
+           TOBN(0x3fb2db59, 0x6ab69357), TOBN(0x8dbd7365, 0xf5e6618b)}},
+         {{TOBN(0x99d53099, 0xdf1ea40e), TOBN(0xb3f24a0b, 0x57d61e64),
+           TOBN(0xd088a198, 0x596eb812), TOBN(0x22c8361b, 0x5762940b)},
+          {TOBN(0x66f01f97, 0xf9c0d95c), TOBN(0x88461172, 0x8e43cdae),
+           TOBN(0x11599a7f, 0xb72b15c3), TOBN(0x135a7536, 0x420d95cc)}},
+         {{TOBN(0x2dcdf0f7, 0x5f7ae2f6), TOBN(0x15fc6e1d, 0xd7fa6da2),
+           TOBN(0x81ca829a, 0xd1d441b6), TOBN(0x84c10cf8, 0x04a106b6)},
+          {TOBN(0xa9b26c95, 0xa73fbbd0), TOBN(0x7f24e0cb, 0x4d8f6ee8),
+           TOBN(0x48b45937, 0x1e25a043), TOBN(0xf8a74fca, 0x036f3dfe)}},
+         {{TOBN(0x1ed46585, 0xc9f84296), TOBN(0x7fbaa8fb, 0x3bc278b0),
+           TOBN(0xa8e96cd4, 0x6c4fcbd0), TOBN(0x940a1202, 0x73b60a5f)},
+          {TOBN(0x34aae120, 0x55a4aec8), TOBN(0x550e9a74, 0xdbd742f0),
+           TOBN(0x794456d7, 0x228c68ab), TOBN(0x492f8868, 0xa4e25ec6)}},
+         {{TOBN(0x682915ad, 0xb2d8f398), TOBN(0xf13b51cc, 0x5b84c953),
+           TOBN(0xcda90ab8, 0x5bb917d6), TOBN(0x4b615560, 0x4ea3dee1)},
+          {TOBN(0x578b4e85, 0x0a52c1c8), TOBN(0xeab1a695, 0x20b75fc4),
+           TOBN(0x60c14f3c, 0xaa0bb3c6), TOBN(0x220f448a, 0xb8216094)}},
+         {{TOBN(0x4fe7ee31, 0xb0e63d34), TOBN(0xf4600572, 0xa9e54fab),
+           TOBN(0xc0493334, 0xd5e7b5a4), TOBN(0x8589fb92, 0x06d54831)},
+          {TOBN(0xaa70f5cc, 0x6583553a), TOBN(0x0879094a, 0xe25649e5),
+           TOBN(0xcc904507, 0x10044652), TOBN(0xebb0696d, 0x02541c4f)}},
+         {{TOBN(0x5a171fde, 0xb9718710), TOBN(0x38f1bed8, 0xf374a9f5),
+           TOBN(0xc8c582e1, 0xba39bdc1), TOBN(0xfc457b0a, 0x908cc0ce)},
+          {TOBN(0x9a187fd4, 0x883841e2), TOBN(0x8ec25b39, 0x38725381),
+           TOBN(0x2553ed05, 0x96f84395), TOBN(0x095c7661, 0x6f6c6897)}},
+         {{TOBN(0x917ac85c, 0x4bdc5610), TOBN(0xb2885fe4, 0x179eb301),
+           TOBN(0x5fc65547, 0x8b78bdcc), TOBN(0x4a9fc893, 0xe59e4699)},
+          {TOBN(0xbb7ff0cd, 0x3ce299af), TOBN(0x195be9b3, 0xadf38b20),
+           TOBN(0x6a929c87, 0xd38ddb8f), TOBN(0x55fcc99c, 0xb21a51b9)}},
+         {{TOBN(0x2b695b4c, 0x721a4593), TOBN(0xed1e9a15, 0x768eaac2),
+           TOBN(0xfb63d71c, 0x7489f914), TOBN(0xf98ba31c, 0x78118910)},
+          {TOBN(0x80291373, 0x9b128eb4), TOBN(0x7801214e, 0xd448af4a),
+           TOBN(0xdbd2e22b, 0x55418dd3), TOBN(0xeffb3c0d, 0xd3998242)}},
+         {{TOBN(0xdfa6077c, 0xc7bf3827), TOBN(0xf2165bcb, 0x47f8238f),
+           TOBN(0xfe37cf68, 0x8564d554), TOBN(0xe5f825c4, 0x0a81fb98)},
+          {TOBN(0x43cc4f67, 0xffed4d6f), TOBN(0xbc609578, 0xb50a34b0),
+           TOBN(0x8aa8fcf9, 0x5041faf1), TOBN(0x5659f053, 0x651773b6)}},
+         {{TOBN(0xe87582c3, 0x6044d63b), TOBN(0xa6089409, 0x0cdb0ca0),
+           TOBN(0x8c993e0f, 0xbfb2bcf6), TOBN(0xfc64a719, 0x45985cfc)},
+          {TOBN(0x15c4da80, 0x83dbedba), TOBN(0x804ae112, 0x2be67df7),
+           TOBN(0xda4c9658, 0xa23defde), TOBN(0x12002ddd, 0x5156e0d3)}},
+         {{TOBN(0xe68eae89, 0x5dd21b96), TOBN(0x8b99f28b, 0xcf44624d),
+           TOBN(0x0ae00808, 0x1ec8897a), TOBN(0xdd0a9303, 0x6712f76e)},
+          {TOBN(0x96237522, 0x4e233de4), TOBN(0x192445b1, 0x2b36a8a5),
+           TOBN(0xabf9ff74, 0x023993d9), TOBN(0x21f37bf4, 0x2aad4a8f)}},
+         {{TOBN(0x340a4349, 0xf8bd2bbd), TOBN(0x1d902cd9, 0x4868195d),
+           TOBN(0x3d27bbf1, 0xe5fdb6f1), TOBN(0x7a5ab088, 0x124f9f1c)},
+          {TOBN(0xc466ab06, 0xf7a09e03), TOBN(0x2f8a1977, 0x31f2c123),
+           TOBN(0xda355dc7, 0x041b6657), TOBN(0xcb840d12, 0x8ece2a7c)}},
+         {{TOBN(0xb600ad9f, 0x7db32675), TOBN(0x78fea133, 0x07a06f1b),
+           TOBN(0x5d032269, 0xb31f6094), TOBN(0x07753ef5, 0x83ec37aa)},
+          {TOBN(0x03485aed, 0x9c0bea78), TOBN(0x41bb3989, 0xbc3f4524),
+           TOBN(0x09403761, 0x697f726d), TOBN(0x6109beb3, 0xdf394820)}},
+         {{TOBN(0x804111ea, 0x3b6d1145), TOBN(0xb6271ea9, 0xa8582654),
+           TOBN(0x619615e6, 0x24e66562), TOBN(0xa2554945, 0xd7b6ad9c)},
+          {TOBN(0xd9c4985e, 0x99bfe35f), TOBN(0x9770ccc0, 0x7b51cdf6),
+           TOBN(0x7c327013, 0x92881832), TOBN(0x8777d45f, 0x286b26d1)}},
+         {{TOBN(0x9bbeda22, 0xd847999d), TOBN(0x03aa33b6, 0xc3525d32),
+           TOBN(0x4b7b96d4, 0x28a959a1), TOBN(0xbb3786e5, 0x31e5d234)},
+          {TOBN(0xaeb5d3ce, 0x6961f247), TOBN(0x20aa85af, 0x02f93d3f),
+           TOBN(0x9cd1ad3d, 0xd7a7ae4f), TOBN(0xbf6688f0, 0x781adaa8)}},
+         {{TOBN(0xb1b40e86, 0x7469cead), TOBN(0x1904c524, 0x309fca48),
+           TOBN(0x9b7312af, 0x4b54bbc7), TOBN(0xbe24bf8f, 0x593affa2)},
+          {TOBN(0xbe5e0790, 0xbd98764b), TOBN(0xa0f45f17, 0xa26e299e),
+           TOBN(0x4af0d2c2, 0x6b8fe4c7), TOBN(0xef170db1, 0x8ae8a3e6)}},
+         {{TOBN(0x0e8d61a0, 0x29e0ccc1), TOBN(0xcd53e87e, 0x60ad36ca),
+           TOBN(0x328c6623, 0xc8173822), TOBN(0x7ee1767d, 0xa496be55)},
+          {TOBN(0x89f13259, 0x648945af), TOBN(0x9e45a5fd, 0x25c8009c),
+           TOBN(0xaf2febd9, 0x1f61ab8c), TOBN(0x43f6bc86, 0x8a275385)}},
+         {{TOBN(0x87792348, 0xf2142e79), TOBN(0x17d89259, 0xc6e6238a),
+           TOBN(0x7536d2f6, 0x4a839d9b), TOBN(0x1f428fce, 0x76a1fbdc)},
+          {TOBN(0x1c109601, 0x0db06dfe), TOBN(0xbfc16bc1, 0x50a3a3cc),
+           TOBN(0xf9cbd9ec, 0x9b30f41b), TOBN(0x5b5da0d6, 0x00138cce)}},
+         {{TOBN(0xec1d0a48, 0x56ef96a7), TOBN(0xb47eb848, 0x982bf842),
+           TOBN(0x66deae32, 0xec3f700d), TOBN(0x4e43c42c, 0xaa1181e0)},
+          {TOBN(0xa1d72a31, 0xd1a4aa2a), TOBN(0x440d4668, 0xc004f3ce),
+           TOBN(0x0d6a2d3b, 0x45fe8a7a), TOBN(0x820e52e2, 0xfb128365)}},
+         {{TOBN(0x29ac5fcf, 0x25e51b09), TOBN(0x180cd2bf, 0x2023d159),
+           TOBN(0xa9892171, 0xa1ebf90e), TOBN(0xf97c4c87, 0x7c132181)},
+          {TOBN(0x9f1dc724, 0xc03dbb7e), TOBN(0xae043765, 0x018cbbe4),
+           TOBN(0xfb0b2a36, 0x0767d153), TOBN(0xa8e2f4d6, 0x249cbaeb)}},
+         {{TOBN(0x172a5247, 0xd95ea168), TOBN(0x1758fada, 0x2970764a),
+           TOBN(0xac803a51, 0x1d978169), TOBN(0x299cfe2e, 0xde77e01b)},
+          {TOBN(0x652a1e17, 0xb0a98927), TOBN(0x2e26e1d1, 0x20014495),
+           TOBN(0x7ae0af9f, 0x7175b56a), TOBN(0xc2e22a80, 0xd64b9f95)}},
+         {{TOBN(0x4d0ff9fb, 0xd90a060a), TOBN(0x496a27db, 0xbaf38085),
+           TOBN(0x32305401, 0xda776bcf), TOBN(0xb8cdcef6, 0x725f209e)},
+          {TOBN(0x61ba0f37, 0x436a0bba), TOBN(0x263fa108, 0x76860049),
+           TOBN(0x92beb98e, 0xda3542cf), TOBN(0xa2d4d14a, 0xd5849538)}},
+         {{TOBN(0x989b9d68, 0x12e9a1bc), TOBN(0x61d9075c, 0x5f6e3268),
+           TOBN(0x352c6aa9, 0x99ace638), TOBN(0xde4e4a55, 0x920f43ff)},
+          {TOBN(0xe5e4144a, 0xd673c017), TOBN(0x667417ae, 0x6f6e05ea),
+           TOBN(0x613416ae, 0xdcd1bd56), TOBN(0x5eb36201, 0x86693711)}},
+         {{TOBN(0x2d7bc504, 0x3a1aa914), TOBN(0x175a1299, 0x76dc5975),
+           TOBN(0xe900e0f2, 0x3fc8125c), TOBN(0x569ef68c, 0x11198875)},
+          {TOBN(0x9012db63, 0x63a113b4), TOBN(0xe3bd3f56, 0x98835766),
+           TOBN(0xa5c94a52, 0x76412dea), TOBN(0xad9e2a09, 0xaa735e5c)}},
+         {{TOBN(0x405a984c, 0x508b65e9), TOBN(0xbde4a1d1, 0x6df1a0d1),
+           TOBN(0x1a9433a1, 0xdfba80da), TOBN(0xe9192ff9, 0x9440ad2e)},
+          {TOBN(0x9f649696, 0x5099fe92), TOBN(0x25ddb65c, 0x0b27a54a),
+           TOBN(0x178279dd, 0xc590da61), TOBN(0x5479a999, 0xfbde681a)}},
+         {{TOBN(0xd0e84e05, 0x013fe162), TOBN(0xbe11dc92, 0x632d471b),
+           TOBN(0xdf0b0c45, 0xfc0e089f), TOBN(0x04fb15b0, 0x4c144025)},
+          {TOBN(0xa61d5fc2, 0x13c99927), TOBN(0xa033e9e0, 0x3de2eb35),
+           TOBN(0xf8185d5c, 0xb8dacbb4), TOBN(0x9a88e265, 0x8644549d)}},
+         {{TOBN(0xf717af62, 0x54671ff6), TOBN(0x4bd4241b, 0x5fa58603),
+           TOBN(0x06fba40b, 0xe67773c0), TOBN(0xc1d933d2, 0x6a2847e9)},
+          {TOBN(0xf4f5acf3, 0x689e2c70), TOBN(0x92aab0e7, 0x46bafd31),
+           TOBN(0x798d76aa, 0x3473f6e5), TOBN(0xcc6641db, 0x93141934)}},
+         {{TOBN(0xcae27757, 0xd31e535e), TOBN(0x04cc43b6, 0x87c2ee11),
+           TOBN(0x8d1f9675, 0x2e029ffa), TOBN(0xc2150672, 0xe4cc7a2c)},
+          {TOBN(0x3b03c1e0, 0x8d68b013), TOBN(0xa9d6816f, 0xedf298f3),
+           TOBN(0x1bfbb529, 0xa2804464), TOBN(0x95a52fae, 0x5db22125)}},
+         {{TOBN(0x55b32160, 0x0e1cb64e), TOBN(0x004828f6, 0x7e7fc9fe),
+           TOBN(0x13394b82, 0x1bb0fb93), TOBN(0xb6293a2d, 0x35f1a920)},
+          {TOBN(0xde35ef21, 0xd145d2d9), TOBN(0xbe6225b3, 0xbb8fa603),
+           TOBN(0x00fc8f6b, 0x32cf252d), TOBN(0xa28e52e6, 0x117cf8c2)}},
+         {{TOBN(0x9d1dc89b, 0x4c371e6d), TOBN(0xcebe0675, 0x36ef0f28),
+           TOBN(0x5de05d09, 0xa4292f81), TOBN(0xa8303593, 0x353e3083)},
+          {TOBN(0xa1715b0a, 0x7e37a9bb), TOBN(0x8c56f61e, 0x2b8faec3),
+           TOBN(0x52507431, 0x33c9b102), TOBN(0x0130cefc, 0xa44431f0)}},
+         {{TOBN(0x56039fa0, 0xbd865cfb), TOBN(0x4b03e578, 0xbc5f1dd7),
+           TOBN(0x40edf2e4, 0xbabe7224), TOBN(0xc752496d, 0x3a1988f6)},
+          {TOBN(0xd1572d3b, 0x564beb6b), TOBN(0x0db1d110, 0x39a1c608),
+           TOBN(0x568d1934, 0x16f60126), TOBN(0x05ae9668, 0xf354af33)}},
+         {{TOBN(0x19de6d37, 0xc92544f2), TOBN(0xcc084353, 0xa35837d5),
+           TOBN(0xcbb6869c, 0x1a514ece), TOBN(0xb633e728, 0x2e1d1066)},
+          {TOBN(0xf15dd69f, 0x936c581c), TOBN(0x96e7b8ce, 0x7439c4f9),
+           TOBN(0x5e676f48, 0x2e448a5b), TOBN(0xb2ca7d5b, 0xfd916bbb)}},
+         {{TOBN(0xd55a2541, 0xf5024025), TOBN(0x47bc5769, 0xe4c2d937),
+           TOBN(0x7d31b92a, 0x0362189f), TOBN(0x83f3086e, 0xef7816f9)},
+          {TOBN(0xf9f46d94, 0xb587579a), TOBN(0xec2d22d8, 0x30e76c5f),
+           TOBN(0x27d57461, 0xb000ffcf), TOBN(0xbb7e65f9, 0x364ffc2c)}},
+         {{TOBN(0x7c7c9477, 0x6652a220), TOBN(0x61618f89, 0xd696c981),
+           TOBN(0x5021701d, 0x89effff3), TOBN(0xf2c8ff8e, 0x7c314163)},
+          {TOBN(0x2da413ad, 0x8efb4d3e), TOBN(0x937b5adf, 0xce176d95),
+           TOBN(0x22867d34, 0x2a67d51c), TOBN(0x262b9b10, 0x18eb3ac9)}},
+         {{TOBN(0x4e314fe4, 0xc43ff28b), TOBN(0x76476627, 0x6a664e7a),
+           TOBN(0x3e90e40b, 0xb7a565c2), TOBN(0x8588993a, 0xc1acf831)},
+          {TOBN(0xd7b501d6, 0x8f938829), TOBN(0x996627ee, 0x3edd7d4c),
+           TOBN(0x37d44a62, 0x90cd34c7), TOBN(0xa8327499, 0xf3833e8d)}},
+         {{TOBN(0x2e18917d, 0x4bf50353), TOBN(0x85dd726b, 0x556765fb),
+           TOBN(0x54fe65d6, 0x93d5ab66), TOBN(0x3ddbaced, 0x915c25fe)},
+          {TOBN(0xa799d9a4, 0x12f22e85), TOBN(0xe2a24867, 0x6d06f6bc),
+           TOBN(0xf4f1ee56, 0x43ca1637), TOBN(0xfda2828b, 0x61ece30a)}},
+         {{TOBN(0x758c1a3e, 0xa2dee7a6), TOBN(0xdcde2f3c, 0x734b2284),
+           TOBN(0xaba445d2, 0x4eaba6ad), TOBN(0x35aaf668, 0x76cee0a7)},
+          {TOBN(0x7e0b04a9, 0xe5aa049a), TOBN(0xe74083ad, 0x91103e84),
+           TOBN(0xbeb183ce, 0x40afecc3), TOBN(0x6b89de9f, 0xea043f7a)}}},
+        {{{TOBN(0x0e299d23, 0xfe67ba66), TOBN(0x91450760, 0x93cf2f34),
+           TOBN(0xf45b5ea9, 0x97fcf913), TOBN(0x5be00843, 0x8bd7ddda)},
+          {TOBN(0x358c3e05, 0xd53ff04d), TOBN(0xbf7ccdc3, 0x5de91ef7),
+           TOBN(0xad684dbf, 0xb69ec1a0), TOBN(0x367e7cf2, 0x801fd997)}},
+         {{TOBN(0x0ca1f3b7, 0xb0dc8595), TOBN(0x27de4608, 0x9f1d9f2e),
+           TOBN(0x1af3bf39, 0xbadd82a7), TOBN(0x79356a79, 0x65862448)},
+          {TOBN(0xc0602345, 0xf5f9a052), TOBN(0x1a8b0f89, 0x139a42f9),
+           TOBN(0xb53eee42, 0x844d40fc), TOBN(0x93b0bfe5, 0x4e5b6368)}},
+         {{TOBN(0x5434dd02, 0xc024789c), TOBN(0x90dca9ea, 0x41b57bfc),
+           TOBN(0x8aa898e2, 0x243398df), TOBN(0xf607c834, 0x894a94bb)},
+          {TOBN(0xbb07be97, 0xc2c99b76), TOBN(0x6576ba67, 0x18c29302),
+           TOBN(0x3d79efcc, 0xe703a88c), TOBN(0xf259ced7, 0xb6a0d106)}},
+         {{TOBN(0x0f893a5d, 0xc8de610b), TOBN(0xe8c515fb, 0x67e223ce),
+           TOBN(0x7774bfa6, 0x4ead6dc5), TOBN(0x89d20f95, 0x925c728f)},
+          {TOBN(0x7a1e0966, 0x098583ce), TOBN(0xa2eedb94, 0x93f2a7d7),
+           TOBN(0x1b282097, 0x4c304d4a), TOBN(0x0842e3da, 0xc077282d)}},
+         {{TOBN(0xe4d972a3, 0x3b9e2d7b), TOBN(0x7cc60b27, 0xc48218ff),
+           TOBN(0x8fc70838, 0x84149d91), TOBN(0x5c04346f, 0x2f461ecc)},
+          {TOBN(0xebe9fdf2, 0x614650a9), TOBN(0x5e35b537, 0xc1f666ac),
+           TOBN(0x645613d1, 0x88babc83), TOBN(0x88cace3a, 0xc5e1c93e)}},
+         {{TOBN(0x209ca375, 0x3de92e23), TOBN(0xccb03cc8, 0x5fbbb6e3),
+           TOBN(0xccb90f03, 0xd7b1487e), TOBN(0xfa9c2a38, 0xc710941f)},
+          {TOBN(0x756c3823, 0x6724ceed), TOBN(0x3a902258, 0x192d0323),
+           TOBN(0xb150e519, 0xea5e038e), TOBN(0xdcba2865, 0xc7427591)}},
+         {{TOBN(0xe549237f, 0x78890732), TOBN(0xc443bef9, 0x53fcb4d9),
+           TOBN(0x9884d8a6, 0xeb3480d6), TOBN(0x8a35b6a1, 0x3048b186)},
+          {TOBN(0xb4e44716, 0x65e9a90a), TOBN(0x45bf380d, 0x653006c0),
+           TOBN(0x8f3f820d, 0x4fe9ae3b), TOBN(0x244a35a0, 0x979a3b71)}},
+         {{TOBN(0xa1010e9d, 0x74cd06ff), TOBN(0x9c17c7df, 0xaca3eeac),
+           TOBN(0x74c86cd3, 0x8063aa2b), TOBN(0x8595c4b3, 0x734614ff)},
+          {TOBN(0xa3de00ca, 0x990f62cc), TOBN(0xd9bed213, 0xca0c3be5),
+           TOBN(0x7886078a, 0xdf8ce9f5), TOBN(0xddb27ce3, 0x5cd44444)}},
+         {{TOBN(0xed374a66, 0x58926ddd), TOBN(0x138b2d49, 0x908015b8),
+           TOBN(0x886c6579, 0xde1f7ab8), TOBN(0x888b9aa0, 0xc3020b7a)},
+          {TOBN(0xd3ec034e, 0x3a96e355), TOBN(0xba65b0b8, 0xf30fbe9a),
+           TOBN(0x064c8e50, 0xff21367a), TOBN(0x1f508ea4, 0x0b04b46e)}},
+         {{TOBN(0x98561a49, 0x747c866c), TOBN(0xbbb1e5fe, 0x0518a062),
+           TOBN(0x20ff4e8b, 0xecdc3608), TOBN(0x7f55cded, 0x20184027)},
+          {TOBN(0x8d73ec95, 0xf38c85f0), TOBN(0x5b589fdf, 0x8bc3b8c3),
+           TOBN(0xbe95dd98, 0x0f12b66f), TOBN(0xf5bd1a09, 0x0e338e01)}},
+         {{TOBN(0x65163ae5, 0x5e915918), TOBN(0x6158d6d9, 0x86f8a46b),
+           TOBN(0x8466b538, 0xeeebf99c), TOBN(0xca8761f6, 0xbca477ef)},
+          {TOBN(0xaf3449c2, 0x9ebbc601), TOBN(0xef3b0f41, 0xe0c3ae2f),
+           TOBN(0xaa6c577d, 0x5de63752), TOBN(0xe9166601, 0x64682a51)}},
+         {{TOBN(0x5a3097be, 0xfc15aa1e), TOBN(0x40d12548, 0xb54b0745),
+           TOBN(0x5bad4706, 0x519a5f12), TOBN(0xed03f717, 0xa439dee6)},
+          {TOBN(0x0794bb6c, 0x4a02c499), TOBN(0xf725083d, 0xcffe71d2),
+           TOBN(0x2cad7519, 0x0f3adcaf), TOBN(0x7f68ea1c, 0x43729310)}},
+         {{TOBN(0xe747c8c7, 0xb7ffd977), TOBN(0xec104c35, 0x80761a22),
+           TOBN(0x8395ebaf, 0x5a3ffb83), TOBN(0xfb3261f4, 0xe4b63db7)},
+          {TOBN(0x53544960, 0xd883e544), TOBN(0x13520d70, 0x8cc2eeb8),
+           TOBN(0x08f6337b, 0xd3d65f99), TOBN(0x83997db2, 0x781cf95b)}},
+         {{TOBN(0xce6ff106, 0x0dbd2c01), TOBN(0x4f8eea6b, 0x1f9ce934),
+           TOBN(0x546f7c4b, 0x0e993921), TOBN(0x6236a324, 0x5e753fc7)},
+          {TOBN(0x65a41f84, 0xa16022e9), TOBN(0x0c18d878, 0x43d1dbb2),
+           TOBN(0x73c55640, 0x2d4cef9c), TOBN(0xa0428108, 0x70444c74)}},
+         {{TOBN(0x68e4f15e, 0x9afdfb3c), TOBN(0x49a56143, 0x5bdfb6df),
+           TOBN(0xa9bc1bd4, 0x5f823d97), TOBN(0xbceb5970, 0xea111c2a)},
+          {TOBN(0x366b455f, 0xb269bbc4), TOBN(0x7cd85e1e, 0xe9bc5d62),
+           TOBN(0xc743c41c, 0x4f18b086), TOBN(0xa4b40990, 0x95294fb9)}},
+         {{TOBN(0x9c7c581d, 0x26ee8382), TOBN(0xcf17dcc5, 0x359d638e),
+           TOBN(0xee8273ab, 0xb728ae3d), TOBN(0x1d112926, 0xf821f047)},
+          {TOBN(0x11498477, 0x50491a74), TOBN(0x687fa761, 0xfde0dfb9),
+           TOBN(0x2c258022, 0x7ea435ab), TOBN(0x6b8bdb94, 0x91ce7e3f)}},
+         {{TOBN(0x4c5b5dc9, 0x3bf834aa), TOBN(0x04371819, 0x4f6c7e4b),
+           TOBN(0xc284e00a, 0x3736bcad), TOBN(0x0d881118, 0x21ae8f8d)},
+          {TOBN(0xf9cf0f82, 0xf48c8e33), TOBN(0xa11fd075, 0xa1bf40db),
+           TOBN(0xdceab0de, 0xdc2733e5), TOBN(0xc560a8b5, 0x8e986bd7)}},
+         {{TOBN(0x48dd1fe2, 0x3929d097), TOBN(0x3885b290, 0x92f188f1),
+           TOBN(0x0f2ae613, 0xda6fcdac), TOBN(0x9054303e, 0xb662a46c)},
+          {TOBN(0xb6871e44, 0x0738042a), TOBN(0x98e6a977, 0xbdaf6449),
+           TOBN(0xd8bc0650, 0xd1c9df1b), TOBN(0xef3d6451, 0x36e098f9)}},
+         {{TOBN(0x03fbae82, 0xb6d72d28), TOBN(0x77ca9db1, 0xf5d84080),
+           TOBN(0x8a112cff, 0xa58efc1c), TOBN(0x518d761c, 0xc564cb4a)},
+          {TOBN(0x69b5740e, 0xf0d1b5ce), TOBN(0x717039cc, 0xe9eb1785),
+           TOBN(0x3fe29f90, 0x22f53382), TOBN(0x8e54ba56, 0x6bc7c95c)}},
+         {{TOBN(0x9c806d8a, 0xf7f91d0f), TOBN(0x3b61b0f1, 0xa82a5728),
+           TOBN(0x4640032d, 0x94d76754), TOBN(0x273eb5de, 0x47d834c6)},
+          {TOBN(0x2988abf7, 0x7b4e4d53), TOBN(0xb7ce66bf, 0xde401777),
+           TOBN(0x9fba6b32, 0x715071b3), TOBN(0x82413c24, 0xad3a1a98)}},
+         {{TOBN(0x5b7fc8c4, 0xe0e8ad93), TOBN(0xb5679aee, 0x5fab868d),
+           TOBN(0xb1f9d2fa, 0x2b3946f3), TOBN(0x458897dc, 0x5685b50a)},
+          {TOBN(0x1e98c930, 0x89d0caf3), TOBN(0x39564c5f, 0x78642e92),
+           TOBN(0x1b77729a, 0x0dbdaf18), TOBN(0xf9170722, 0x579e82e6)}},
+         {{TOBN(0x680c0317, 0xe4515fa5), TOBN(0xf85cff84, 0xfb0c790f),
+           TOBN(0xc7a82aab, 0x6d2e0765), TOBN(0x7446bca9, 0x35c82b32)},
+          {TOBN(0x5de607aa, 0x6d63184f), TOBN(0x7c1a46a8, 0x262803a6),
+           TOBN(0xd218313d, 0xaebe8035), TOBN(0x92113ffd, 0xc73c51f8)}},
+         {{TOBN(0x4b38e083, 0x12e7e46c), TOBN(0x69d0a37a, 0x56126bd5),
+           TOBN(0xfb3f324b, 0x73c07e04), TOBN(0xa0c22f67, 0x8fda7267)},
+          {TOBN(0x8f2c0051, 0x4d2c7d8f), TOBN(0xbc45ced3, 0xcbe2cae5),
+           TOBN(0xe1c6cf07, 0xa8f0f277), TOBN(0xbc392312, 0x1eb99a98)}},
+         {{TOBN(0x75537b7e, 0x3cc8ac85), TOBN(0x8d725f57, 0xdd02753b),
+           TOBN(0xfd05ff64, 0xb737df2f), TOBN(0x55fe8712, 0xf6d2531d)},
+          {TOBN(0x57ce04a9, 0x6ab6b01c), TOBN(0x69a02a89, 0x7cd93724),
+           TOBN(0x4f82ac35, 0xcf86699b), TOBN(0x8242d3ad, 0x9cb4b232)}},
+         {{TOBN(0x713d0f65, 0xd62105e5), TOBN(0xbb222bfa, 0x2d29be61),
+           TOBN(0xf2f9a79e, 0x6cfbef09), TOBN(0xfc24d8d3, 0xd5d6782f)},
+          {TOBN(0x5db77085, 0xd4129967), TOBN(0xdb81c3cc, 0xdc3c2a43),
+           TOBN(0x9d655fc0, 0x05d8d9a3), TOBN(0x3f5d057a, 0x54298026)}},
+         {{TOBN(0x1157f56d, 0x88c54694), TOBN(0xb26baba5, 0x9b09573e),
+           TOBN(0x2cab03b0, 0x22adffd1), TOBN(0x60a412c8, 0xdd69f383)},
+          {TOBN(0xed76e98b, 0x54b25039), TOBN(0xd4ee67d3, 0x687e714d),
+           TOBN(0x87739648, 0x7b00b594), TOBN(0xce419775, 0xc9ef709b)}},
+         {{TOBN(0x40f76f85, 0x1c203a40), TOBN(0x30d352d6, 0xeafd8f91),
+           TOBN(0xaf196d3d, 0x95578dd2), TOBN(0xea4bb3d7, 0x77cc3f3d)},
+          {TOBN(0x42a5bd03, 0xb98e782b), TOBN(0xac958c40, 0x0624920d),
+           TOBN(0xb838134c, 0xfc56fcc8), TOBN(0x86ec4ccf, 0x89572e5e)}},
+         {{TOBN(0x69c43526, 0x9be47be0), TOBN(0x323b7dd8, 0xcb28fea1),
+           TOBN(0xfa5538ba, 0x3a6c67e5), TOBN(0xef921d70, 0x1d378e46)},
+          {TOBN(0xf92961fc, 0x3c4b880e), TOBN(0x3f6f914e, 0x98940a67),
+           TOBN(0xa990eb0a, 0xfef0ff39), TOBN(0xa6c2920f, 0xf0eeff9c)}},
+         {{TOBN(0xca804166, 0x51b8d9a3), TOBN(0x42531bc9, 0x0ffb0db1),
+           TOBN(0x72ce4718, 0xaa82e7ce), TOBN(0x6e199913, 0xdf574741)},
+          {TOBN(0xd5f1b13d, 0xd5d36946), TOBN(0x8255dc65, 0xf68f0194),
+           TOBN(0xdc9df4cd, 0x8710d230), TOBN(0x3453c20f, 0x138c1988)}},
+         {{TOBN(0x9af98dc0, 0x89a6ef01), TOBN(0x4dbcc3f0, 0x9857df85),
+           TOBN(0x34805601, 0x5c1ad924), TOBN(0x40448da5, 0xd0493046)},
+          {TOBN(0xf629926d, 0x4ee343e2), TOBN(0x6343f1bd, 0x90e8a301),
+           TOBN(0xefc93491, 0x40815b3f), TOBN(0xf882a423, 0xde8f66fb)}},
+         {{TOBN(0x3a12d5f4, 0xe7db9f57), TOBN(0x7dfba38a, 0x3c384c27),
+           TOBN(0x7a904bfd, 0x6fc660b1), TOBN(0xeb6c5db3, 0x2773b21c)},
+          {TOBN(0xc350ee66, 0x1cdfe049), TOBN(0x9baac0ce, 0x44540f29),
+           TOBN(0xbc57b6ab, 0xa5ec6aad), TOBN(0x167ce8c3, 0x0a7c1baa)}},
+         {{TOBN(0xb23a03a5, 0x53fb2b56), TOBN(0x6ce141e7, 0x4e057f78),
+           TOBN(0x796525c3, 0x89e490d9), TOBN(0x0bc95725, 0xa31a7e75)},
+          {TOBN(0x1ec56791, 0x1220fd06), TOBN(0x716e3a3c, 0x408b0bd6),
+           TOBN(0x31cd6bf7, 0xe8ebeba9), TOBN(0xa7326ca6, 0xbee6b670)}},
+         {{TOBN(0x3d9f851c, 0xcd090c43), TOBN(0x561e8f13, 0xf12c3988),
+           TOBN(0x50490b6a, 0x904b7be4), TOBN(0x61690ce1, 0x0410737b)},
+          {TOBN(0x299e9a37, 0x0f009052), TOBN(0x258758f0, 0xf026092e),
+           TOBN(0x9fa255f3, 0xfdfcdc0f), TOBN(0xdbc9fb1f, 0xc0e1bcd2)}},
+         {{TOBN(0x35f9dd6e, 0x24651840), TOBN(0xdca45a84, 0xa5c59abc),
+           TOBN(0x103d396f, 0xecca4938), TOBN(0x4532da0a, 0xb97b3f29)},
+          {TOBN(0xc4135ea5, 0x1999a6bf), TOBN(0x3aa9505a, 0x5e6bf2ee),
+           TOBN(0xf77cef06, 0x3f5be093), TOBN(0x97d1a0f8, 0xa943152e)}},
+         {{TOBN(0x2cb0ebba, 0x2e1c21dd), TOBN(0xf41b29fc, 0x2c6797c4),
+           TOBN(0xc6e17321, 0xb300101f), TOBN(0x4422b0e9, 0xd0d79a89)},
+          {TOBN(0x49e4901c, 0x92f1bfc4), TOBN(0x06ab1f8f, 0xe1e10ed9),
+           TOBN(0x84d35577, 0xdb2926b8), TOBN(0xca349d39, 0x356e8ec2)}},
+         {{TOBN(0x70b63d32, 0x343bf1a9), TOBN(0x8fd3bd28, 0x37d1a6b1),
+           TOBN(0x0454879c, 0x316865b4), TOBN(0xee959ff6, 0xc458efa2)},
+          {TOBN(0x0461dcf8, 0x9706dc3f), TOBN(0x737db0e2, 0x164e4b2e),
+           TOBN(0x09262680, 0x2f8843c8), TOBN(0x54498bbc, 0x7745e6f6)}},
+         {{TOBN(0x359473fa, 0xa29e24af), TOBN(0xfcc3c454, 0x70aa87a1),
+           TOBN(0xfd2c4bf5, 0x00573ace), TOBN(0xb65b514e, 0x28dd1965)},
+          {TOBN(0xe46ae7cf, 0x2193e393), TOBN(0x60e9a4e1, 0xf5444d97),
+           TOBN(0xe7594e96, 0x00ff38ed), TOBN(0x43d84d2f, 0x0a0e0f02)}},
+         {{TOBN(0x8b6db141, 0xee398a21), TOBN(0xb88a56ae, 0xe3bcc5be),
+           TOBN(0x0a1aa52f, 0x373460ea), TOBN(0x20da1a56, 0x160bb19b)},
+          {TOBN(0xfb54999d, 0x65bf0384), TOBN(0x71a14d24, 0x5d5a180e),
+           TOBN(0xbc44db7b, 0x21737b04), TOBN(0xd84fcb18, 0x01dd8e92)}},
+         {{TOBN(0x80de937b, 0xfa44b479), TOBN(0x53505499, 0x5c98fd4f),
+           TOBN(0x1edb12ab, 0x28f08727), TOBN(0x4c58b582, 0xa5f3ef53)},
+          {TOBN(0xbfb236d8, 0x8327f246), TOBN(0xc3a3bfaa, 0x4d7df320),
+           TOBN(0xecd96c59, 0xb96024f2), TOBN(0xfc293a53, 0x7f4e0433)}},
+         {{TOBN(0x5341352b, 0x5acf6e10), TOBN(0xc50343fd, 0xafe652c3),
+           TOBN(0x4af3792d, 0x18577a7f), TOBN(0xe1a4c617, 0xaf16823d)},
+          {TOBN(0x9b26d0cd, 0x33425d0a), TOBN(0x306399ed, 0x9b7bc47f),
+           TOBN(0x2a792f33, 0x706bb20b), TOBN(0x31219614, 0x98111055)}},
+         {{TOBN(0x864ec064, 0x87f5d28b), TOBN(0x11392d91, 0x962277fd),
+           TOBN(0xb5aa7942, 0xbb6aed5f), TOBN(0x080094dc, 0x47e799d9)},
+          {TOBN(0x4afa588c, 0x208ba19b), TOBN(0xd3e7570f, 0x8512f284),
+           TOBN(0xcbae64e6, 0x02f5799a), TOBN(0xdeebe7ef, 0x514b9492)}},
+         {{TOBN(0x30300f98, 0xe5c298ff), TOBN(0x17f561be, 0x3678361f),
+           TOBN(0xf52ff312, 0x98cb9a16), TOBN(0x6233c3bc, 0x5562d490)},
+          {TOBN(0x7bfa15a1, 0x92e3a2cb), TOBN(0x961bcfd1, 0xe6365119),
+           TOBN(0x3bdd29bf, 0x2c8c53b1), TOBN(0x739704df, 0x822844ba)}},
+         {{TOBN(0x7dacfb58, 0x7e7b754b), TOBN(0x23360791, 0xa806c9b9),
+           TOBN(0xe7eb88c9, 0x23504452), TOBN(0x2983e996, 0x852c1783)},
+          {TOBN(0xdd4ae529, 0x958d881d), TOBN(0x026bae03, 0x262c7b3c),
+           TOBN(0x3a6f9193, 0x960b52d1), TOBN(0xd0980f90, 0x92696cfb)}},
+         {{TOBN(0x4c1f428c, 0xd5f30851), TOBN(0x94dfed27, 0x2a4f6630),
+           TOBN(0x4df53772, 0xfc5d48a4), TOBN(0xdd2d5a2f, 0x933260ce)},
+          {TOBN(0x574115bd, 0xd44cc7a5), TOBN(0x4ba6b20d, 0xbd12533a),
+           TOBN(0x30e93cb8, 0x243057c9), TOBN(0x794c486a, 0x14de320e)}},
+         {{TOBN(0xe925d4ce, 0xf21496e4), TOBN(0xf951d198, 0xec696331),
+           TOBN(0x9810e2de, 0x3e8d812f), TOBN(0xd0a47259, 0x389294ab)},
+          {TOBN(0x513ba2b5, 0x0e3bab66), TOBN(0x462caff5, 0xabad306f),
+           TOBN(0xe2dc6d59, 0xaf04c49e), TOBN(0x1aeb8750, 0xe0b84b0b)}},
+         {{TOBN(0xc034f12f, 0x2f7d0ca2), TOBN(0x6d2e8128, 0xe06acf2f),
+           TOBN(0x801f4f83, 0x21facc2f), TOBN(0xa1170c03, 0xf40ef607)},
+          {TOBN(0xfe0a1d4f, 0x7805a99c), TOBN(0xbde56a36, 0xcc26aba5),
+           TOBN(0x5b1629d0, 0x35531f40), TOBN(0xac212c2b, 0x9afa6108)}},
+         {{TOBN(0x30a06bf3, 0x15697be5), TOBN(0x6f0545dc, 0x2c63c7c1),
+           TOBN(0x5d8cb842, 0x7ccdadaf), TOBN(0xd52e379b, 0xac7015bb)},
+          {TOBN(0xc4f56147, 0xf462c23e), TOBN(0xd44a4298, 0x46bc24b0),
+           TOBN(0xbc73d23a, 0xe2856d4f), TOBN(0x61cedd8c, 0x0832bcdf)}},
+         {{TOBN(0x60953556, 0x99f241d7), TOBN(0xee4adbd7, 0x001a349d),
+           TOBN(0x0b35bf6a, 0xaa89e491), TOBN(0x7f0076f4, 0x136f7546)},
+          {TOBN(0xd19a18ba, 0x9264da3d), TOBN(0x6eb2d2cd, 0x62a7a28b),
+           TOBN(0xcdba941f, 0x8761c971), TOBN(0x1550518b, 0xa3be4a5d)}},
+         {{TOBN(0xd0e8e2f0, 0x57d0b70c), TOBN(0xeea8612e, 0xcd133ba3),
+           TOBN(0x814670f0, 0x44416aec), TOBN(0x424db6c3, 0x30775061)},
+          {TOBN(0xd96039d1, 0x16213fd1), TOBN(0xc61e7fa5, 0x18a3478f),
+           TOBN(0xa805bdcc, 0xcb0c5021), TOBN(0xbdd6f3a8, 0x0cc616dd)}},
+         {{TOBN(0x06009667, 0x5d97f7e2), TOBN(0x31db0fc1, 0xaf0bf4b6),
+           TOBN(0x23680ed4, 0x5491627a), TOBN(0xb99a3c66, 0x7d741fb1)},
+          {TOBN(0xe9bb5f55, 0x36b1ff92), TOBN(0x29738577, 0x512b388d),
+           TOBN(0xdb8a2ce7, 0x50fcf263), TOBN(0x385346d4, 0x6c4f7b47)}},
+         {{TOBN(0xbe86c5ef, 0x31631f9e), TOBN(0xbf91da21, 0x03a57a29),
+           TOBN(0xc3b1f796, 0x7b23f821), TOBN(0x0f7d00d2, 0x770db354)},
+          {TOBN(0x8ffc6c3b, 0xd8fe79da), TOBN(0xcc5e8c40, 0xd525c996),
+           TOBN(0x4640991d, 0xcfff632a), TOBN(0x64d97e8c, 0x67112528)}},
+         {{TOBN(0xc232d973, 0x02f1cd1e), TOBN(0xce87eacb, 0x1dd212a4),
+           TOBN(0x6e4c8c73, 0xe69802f7), TOBN(0x12ef0290, 0x1fffddbd)},
+          {TOBN(0x941ec74e, 0x1bcea6e2), TOBN(0xd0b54024, 0x3cb92cbb),
+           TOBN(0x809fb9d4, 0x7e8f9d05), TOBN(0x3bf16159, 0xf2992aae)}},
+         {{TOBN(0xad40f279, 0xf8a7a838), TOBN(0x11aea631, 0x05615660),
+           TOBN(0xbf52e6f1, 0xa01f6fa1), TOBN(0xef046995, 0x3dc2aec9)},
+          {TOBN(0x785dbec9, 0xd8080711), TOBN(0xe1aec60a, 0x9fdedf76),
+           TOBN(0xece797b5, 0xfa21c126), TOBN(0xc66e898f, 0x05e52732)}},
+         {{TOBN(0x39bb69c4, 0x08811fdb), TOBN(0x8bfe1ef8, 0x2fc7f082),
+           TOBN(0xc8e7a393, 0x174f4138), TOBN(0xfba8ad1d, 0xd58d1f98)},
+          {TOBN(0xbc21d0ce, 0xbfd2fd5b), TOBN(0x0b839a82, 0x6ee60d61),
+           TOBN(0xaacf7658, 0xafd22253), TOBN(0xb526bed8, 0xaae396b3)}},
+         {{TOBN(0xccc1bbc2, 0x38564464), TOBN(0x9e3ff947, 0x8c45bc73),
+           TOBN(0xcde9bca3, 0x58188a78), TOBN(0x138b8ee0, 0xd73bf8f7)},
+          {TOBN(0x5c7e234c, 0x4123c489), TOBN(0x66e69368, 0xfa643297),
+           TOBN(0x0629eeee, 0x39a15fa3), TOBN(0x95fab881, 0xa9e2a927)}},
+         {{TOBN(0xb2497007, 0xeafbb1e1), TOBN(0xd75c9ce6, 0xe75b7a93),
+           TOBN(0x3558352d, 0xefb68d78), TOBN(0xa2f26699, 0x223f6396)},
+          {TOBN(0xeb911ecf, 0xe469b17a), TOBN(0x62545779, 0xe72d3ec2),
+           TOBN(0x8ea47de7, 0x82cb113f), TOBN(0xebe4b086, 0x4e1fa98d)}},
+         {{TOBN(0xec2d5ed7, 0x8cdfedb1), TOBN(0xa535c077, 0xfe211a74),
+           TOBN(0x9678109b, 0x11d244c5), TOBN(0xf17c8bfb, 0xbe299a76)},
+          {TOBN(0xb651412e, 0xfb11fbc4), TOBN(0xea0b5482, 0x94ab3f65),
+           TOBN(0xd8dffd95, 0x0cf78243), TOBN(0x2e719e57, 0xce0361d4)}},
+         {{TOBN(0x9007f085, 0x304ddc5b), TOBN(0x095e8c6d, 0x4daba2ea),
+           TOBN(0x5a33cdb4, 0x3f9d28a9), TOBN(0x85b95cd8, 0xe2283003)},
+          {TOBN(0xbcd6c819, 0xb9744733), TOBN(0x29c5f538, 0xfc7f5783),
+           TOBN(0x6c49b2fa, 0xd59038e4), TOBN(0x68349cc1, 0x3bbe1018)}},
+         {{TOBN(0xcc490c1d, 0x21830ee5), TOBN(0x36f9c4ee, 0xe9bfa297),
+           TOBN(0x58fd7294, 0x48de1a94), TOBN(0xaadb13a8, 0x4e8f2cdc)},
+          {TOBN(0x515eaaa0, 0x81313dba), TOBN(0xc76bb468, 0xc2152dd8),
+           TOBN(0x357f8d75, 0xa653dbf8), TOBN(0xe4d8c4d1, 0xb14ac143)}},
+         {{TOBN(0xbdb8e675, 0xb055cb40), TOBN(0x898f8e7b, 0x977b5167),
+           TOBN(0xecc65651, 0xb82fb863), TOBN(0x56544814, 0x6d88f01f)},
+          {TOBN(0xb0928e95, 0x263a75a9), TOBN(0xcfb6836f, 0x1a22fcda),
+           TOBN(0x651d14db, 0x3f3bd37c), TOBN(0x1d3837fb, 0xb6ad4664)}},
+         {{TOBN(0x7c5fb538, 0xff4f94ab), TOBN(0x7243c712, 0x6d7fb8f2),
+           TOBN(0xef13d60c, 0xa85c5287), TOBN(0x18cfb7c7, 0x4bb8dd1b)},
+          {TOBN(0x82f9bfe6, 0x72908219), TOBN(0x35c4592b, 0x9d5144ab),
+           TOBN(0x52734f37, 0x9cf4b42f), TOBN(0x6bac55e7, 0x8c60ddc4)}},
+         {{TOBN(0xb5cd811e, 0x94dea0f6), TOBN(0x259ecae4, 0xe18cc1a3),
+           TOBN(0x6a0e836e, 0x15e660f8), TOBN(0x6c639ea6, 0x0e02bff2)},
+          {TOBN(0x8721b8cb, 0x7e1026fd), TOBN(0x9e73b50b, 0x63261942),
+           TOBN(0xb8c70974, 0x77f01da3), TOBN(0x1839e6a6, 0x8268f57f)}},
+         {{TOBN(0x571b9415, 0x5150b805), TOBN(0x1892389e, 0xf92c7097),
+           TOBN(0x8d69c18e, 0x4a084b95), TOBN(0x7014c512, 0xbe5b495c)},
+          {TOBN(0x4780db36, 0x1b07523c), TOBN(0x2f6219ce, 0x2c1c64fa),
+           TOBN(0xc38b81b0, 0x602c105a), TOBN(0xab4f4f20, 0x5dc8e360)}},
+         {{TOBN(0x20d3c982, 0xcf7d62d2), TOBN(0x1f36e29d, 0x23ba8150),
+           TOBN(0x48ae0bf0, 0x92763f9e), TOBN(0x7a527e6b, 0x1d3a7007)},
+          {TOBN(0xb4a89097, 0x581a85e3), TOBN(0x1f1a520f, 0xdc158be5),
+           TOBN(0xf98db37d, 0x167d726e), TOBN(0x8802786e, 0x1113e862)}}},
+        {{{TOBN(0xefb2149e, 0x36f09ab0), TOBN(0x03f163ca, 0x4a10bb5b),
+           TOBN(0xd0297045, 0x06e20998), TOBN(0x56f0af00, 0x1b5a3bab)},
+          {TOBN(0x7af4cfec, 0x70880e0d), TOBN(0x7332a66f, 0xbe3d913f),
+           TOBN(0x32e6c84a, 0x7eceb4bd), TOBN(0xedc4a79a, 0x9c228f55)}},
+         {{TOBN(0xc37c7dd0, 0xc55c4496), TOBN(0xa6a96357, 0x25bbabd2),
+           TOBN(0x5b7e63f2, 0xadd7f363), TOBN(0x9dce3782, 0x2e73f1df)},
+          {TOBN(0xe1e5a16a, 0xb2b91f71), TOBN(0xe4489823, 0x5ba0163c),
+           TOBN(0xf2759c32, 0xf6e515ad), TOBN(0xa5e2f1f8, 0x8615eecf)}},
+         {{TOBN(0x74519be7, 0xabded551), TOBN(0x03d358b8, 0xc8b74410),
+           TOBN(0x4d00b10b, 0x0e10d9a9), TOBN(0x6392b0b1, 0x28da52b7)},
+          {TOBN(0x6744a298, 0x0b75c904), TOBN(0xc305b0ae, 0xa8f7f96c),
+           TOBN(0x042e421d, 0x182cf932), TOBN(0xf6fc5d50, 0x9e4636ca)}},
+         {{TOBN(0x795847c9, 0xd64cc78c), TOBN(0x6c50621b, 0x9b6cb27b),
+           TOBN(0x07099bf8, 0xdf8022ab), TOBN(0x48f862eb, 0xc04eda1d)},
+          {TOBN(0xd12732ed, 0xe1603c16), TOBN(0x19a80e0f, 0x5c9a9450),
+           TOBN(0xe2257f54, 0xb429b4fc), TOBN(0x66d3b2c6, 0x45460515)}},
+         {{TOBN(0x6ca4f87e, 0x822e37be), TOBN(0x73f237b4, 0x253bda4e),
+           TOBN(0xf747f3a2, 0x41190aeb), TOBN(0xf06fa36f, 0x804cf284)},
+          {TOBN(0x0a6bbb6e, 0xfc621c12), TOBN(0x5d624b64, 0x40b80ec6),
+           TOBN(0x4b072425, 0x7ba556f3), TOBN(0x7fa0c354, 0x3e2d20a8)}},
+         {{TOBN(0xe921fa31, 0xe3229d41), TOBN(0xa929c652, 0x94531bd4),
+           TOBN(0x84156027, 0xa6d38209), TOBN(0xf3d69f73, 0x6bdb97bd)},
+          {TOBN(0x8906d19a, 0x16833631), TOBN(0x68a34c2e, 0x03d51be3),
+           TOBN(0xcb59583b, 0x0e511cd8), TOBN(0x99ce6bfd, 0xfdc132a8)}},
+         {{TOBN(0x3facdaaa, 0xffcdb463), TOBN(0x658bbc1a, 0x34a38b08),
+           TOBN(0x12a801f8, 0xf1a9078d), TOBN(0x1567bcf9, 0x6ab855de)},
+          {TOBN(0xe08498e0, 0x3572359b), TOBN(0xcf0353e5, 0x8659e68b),
+           TOBN(0xbb86e9c8, 0x7d23807c), TOBN(0xbc08728d, 0x2198e8a2)}},
+         {{TOBN(0x8de2b7bc, 0x453cadd6), TOBN(0x203900a7, 0xbc0bc1f8),
+           TOBN(0xbcd86e47, 0xa6abd3af), TOBN(0x911cac12, 0x8502effb)},
+          {TOBN(0x2d550242, 0xec965469), TOBN(0x0e9f7692, 0x29e0017e),
+           TOBN(0x633f078f, 0x65979885), TOBN(0xfb87d449, 0x4cf751ef)}},
+         {{TOBN(0xe1790e4b, 0xfc25419a), TOBN(0x36467203, 0x4bff3cfd),
+           TOBN(0xc8db6386, 0x25b6e83f), TOBN(0x6cc69f23, 0x6cad6fd2)},
+          {TOBN(0x0219e45a, 0x6bc68bb9), TOBN(0xe43d79b6, 0x297f7334),
+           TOBN(0x7d445368, 0x465dc97c), TOBN(0x4b9eea32, 0x2a0b949a)}},
+         {{TOBN(0x1b96c6ba, 0x6102d021), TOBN(0xeaafac78, 0x2f4461ea),
+           TOBN(0xd4b85c41, 0xc49f19a8), TOBN(0x275c28e4, 0xcf538875)},
+          {TOBN(0x35451a9d, 0xdd2e54e0), TOBN(0x6991adb5, 0x0605618b),
+           TOBN(0x5b8b4bcd, 0x7b36cd24), TOBN(0x372a4f8c, 0x56f37216)}},
+         {{TOBN(0xc890bd73, 0xa6a5da60), TOBN(0x6f083da0, 0xdc4c9ff0),
+           TOBN(0xf4e14d94, 0xf0536e57), TOBN(0xf9ee1eda, 0xaaec8243)},
+          {TOBN(0x571241ec, 0x8bdcf8e7), TOBN(0xa5db8271, 0x0b041e26),
+           TOBN(0x9a0b9a99, 0xe3fff040), TOBN(0xcaaf21dd, 0x7c271202)}},
+         {{TOBN(0xb4e2b2e1, 0x4f0dd2e8), TOBN(0xe77e7c4f, 0x0a377ac7),
+           TOBN(0x69202c3f, 0x0d7a2198), TOBN(0xf759b7ff, 0x28200eb8)},
+          {TOBN(0xc87526ed, 0xdcfe314e), TOBN(0xeb84c524, 0x53d5cf99),
+           TOBN(0xb1b52ace, 0x515138b6), TOBN(0x5aa7ff8c, 0x23fca3f4)}},
+         {{TOBN(0xff0b13c3, 0xb9791a26), TOBN(0x960022da, 0xcdd58b16),
+           TOBN(0xdbd55c92, 0x57aad2de), TOBN(0x3baaaaa3, 0xf30fe619)},
+          {TOBN(0x9a4b2346, 0x0d881efd), TOBN(0x506416c0, 0x46325e2a),
+           TOBN(0x91381e76, 0x035c18d4), TOBN(0xb3bb68be, 0xf27817b0)}},
+         {{TOBN(0x15bfb8bf, 0x5116f937), TOBN(0x7c64a586, 0xc1268943),
+           TOBN(0x71e25cc3, 0x8419a2c8), TOBN(0x9fd6b0c4, 0x8335f463)},
+          {TOBN(0x4bf0ba3c, 0xe8ee0e0e), TOBN(0x6f6fba60, 0x298c21fa),
+           TOBN(0x57d57b39, 0xae66bee0), TOBN(0x292d5130, 0x22672544)}},
+         {{TOBN(0xf451105d, 0xbab093b3), TOBN(0x012f59b9, 0x02839986),
+           TOBN(0x8a915802, 0x3474a89c), TOBN(0x048c919c, 0x2de03e97)},
+          {TOBN(0xc476a2b5, 0x91071cd5), TOBN(0x791ed89a, 0x034970a5),
+           TOBN(0x89bd9042, 0xe1b7994b), TOBN(0x8eaf5179, 0xa1057ffd)}},
+         {{TOBN(0x6066e2a2, 0xd551ee10), TOBN(0x87a8f1d8, 0x727e09a6),
+           TOBN(0x00d08bab, 0x2c01148d), TOBN(0x6da8e4f1, 0x424f33fe)},
+          {TOBN(0x466d17f0, 0xcf9a4e71), TOBN(0xff502010, 0x3bf5cb19),
+           TOBN(0xdccf97d8, 0xd062ecc0), TOBN(0x80c0d9af, 0x81d80ac4)}},
+         {{TOBN(0xe87771d8, 0x033f2876), TOBN(0xb0186ec6, 0x7d5cc3db),
+           TOBN(0x58e8bb80, 0x3bc9bc1d), TOBN(0x4d1395cc, 0x6f6ef60e)},
+          {TOBN(0xa73c62d6, 0x186244a0), TOBN(0x918e5f23, 0x110a5b53),
+           TOBN(0xed4878ca, 0x741b7eab), TOBN(0x3038d71a, 0xdbe03e51)}},
+         {{TOBN(0x840204b7, 0xa93c3246), TOBN(0x21ab6069, 0xa0b9b4cd),
+           TOBN(0xf5fa6e2b, 0xb1d64218), TOBN(0x1de6ad0e, 0xf3d56191)},
+          {TOBN(0x570aaa88, 0xff1929c7), TOBN(0xc6df4c6b, 0x640e87b5),
+           TOBN(0xde8a74f2, 0xc65f0ccc), TOBN(0x8b972fd5, 0xe6f6cc01)}},
+         {{TOBN(0x3fff36b6, 0x0b846531), TOBN(0xba7e45e6, 0x10a5e475),
+           TOBN(0x84a1d10e, 0x4145b6c5), TOBN(0xf1f7f91a, 0x5e046d9d)},
+          {TOBN(0x0317a692, 0x44de90d7), TOBN(0x951a1d4a, 0xf199c15e),
+           TOBN(0x91f78046, 0xc9d73deb), TOBN(0x74c82828, 0xfab8224f)}},
+         {{TOBN(0xaa6778fc, 0xe7560b90), TOBN(0xb4073e61, 0xa7e824ce),
+           TOBN(0xff0d693c, 0xd642eba8), TOBN(0x7ce2e57a, 0x5dccef38)},
+          {TOBN(0x89c2c789, 0x1df1ad46), TOBN(0x83a06922, 0x098346fd),
+           TOBN(0x2d715d72, 0xda2fc177), TOBN(0x7b6dd71d, 0x85b6cf1d)}},
+         {{TOBN(0xc60a6d0a, 0x73fa9cb0), TOBN(0xedd3992e, 0x328bf5a9),
+           TOBN(0xc380ddd0, 0x832c8c82), TOBN(0xd182d410, 0xa2a0bf50)},
+          {TOBN(0x7d9d7438, 0xd9a528db), TOBN(0xe8b1a0e9, 0xcaf53994),
+           TOBN(0xddd6e5fe, 0x0e19987c), TOBN(0xacb8df03, 0x190b059d)}},
+         {{TOBN(0x53703a32, 0x8300129f), TOBN(0x1f637662, 0x68c43bfd),
+           TOBN(0xbcbd1913, 0x00e54051), TOBN(0x812fcc62, 0x7bf5a8c5)},
+          {TOBN(0x3f969d5f, 0x29fb85da), TOBN(0x72f4e00a, 0x694759e8),
+           TOBN(0x426b6e52, 0x790726b7), TOBN(0x617bbc87, 0x3bdbb209)}},
+         {{TOBN(0x511f8bb9, 0x97aee317), TOBN(0x812a4096, 0xe81536a8),
+           TOBN(0x137dfe59, 0x3ac09b9b), TOBN(0x0682238f, 0xba8c9a7a)},
+          {TOBN(0x7072ead6, 0xaeccb4bd), TOBN(0x6a34e9aa, 0x692ba633),
+           TOBN(0xc82eaec2, 0x6fff9d33), TOBN(0xfb753512, 0x1d4d2b62)}},
+         {{TOBN(0x1a0445ff, 0x1d7aadab), TOBN(0x65d38260, 0xd5f6a67c),
+           TOBN(0x6e62fb08, 0x91cfb26f), TOBN(0xef1e0fa5, 0x5c7d91d6)},
+          {TOBN(0x47e7c7ba, 0x33db72cd), TOBN(0x017cbc09, 0xfa7c74b2),
+           TOBN(0x3c931590, 0xf50a503c), TOBN(0xcac54f60, 0x616baa42)}},
+         {{TOBN(0x9b6cd380, 0xb2369f0f), TOBN(0x97d3a70d, 0x23c76151),
+           TOBN(0x5f9dd6fc, 0x9862a9c6), TOBN(0x044c4ab2, 0x12312f51)},
+          {TOBN(0x035ea0fd, 0x834a2ddc), TOBN(0x49e6b862, 0xcc7b826d),
+           TOBN(0xb03d6883, 0x62fce490), TOBN(0x62f2497a, 0xb37e36e9)}},
+         {{TOBN(0x04b005b6, 0xc6458293), TOBN(0x36bb5276, 0xe8d10af7),
+           TOBN(0xacf2dc13, 0x8ee617b8), TOBN(0x470d2d35, 0xb004b3d4)},
+          {TOBN(0x06790832, 0xfeeb1b77), TOBN(0x2bb75c39, 0x85657f9c),
+           TOBN(0xd70bd4ed, 0xc0f60004), TOBN(0xfe797ecc, 0x219b018b)}},
+         {{TOBN(0x9b5bec2a, 0x753aebcc), TOBN(0xdaf9f3dc, 0xc939eca5),
+           TOBN(0xd6bc6833, 0xd095ad09), TOBN(0x98abdd51, 0xdaa4d2fc)},
+          {TOBN(0xd9840a31, 0x8d168be5), TOBN(0xcf7c10e0, 0x2325a23c),
+           TOBN(0xa5c02aa0, 0x7e6ecfaf), TOBN(0x2462e7e6, 0xb5bfdf18)}},
+         {{TOBN(0xab2d8a8b, 0xa0cc3f12), TOBN(0x68dd485d, 0xbc672a29),
+           TOBN(0x72039752, 0x596f2cd3), TOBN(0x5d3eea67, 0xa0cf3d8d)},
+          {TOBN(0x810a1a81, 0xe6602671), TOBN(0x8f144a40, 0x14026c0c),
+           TOBN(0xbc753a6d, 0x76b50f85), TOBN(0xc4dc21e8, 0x645cd4a4)}},
+         {{TOBN(0xc5262dea, 0x521d0378), TOBN(0x802b8e0e, 0x05011c6f),
+           TOBN(0x1ba19cbb, 0x0b4c19ea), TOBN(0x21db64b5, 0xebf0aaec)},
+          {TOBN(0x1f394ee9, 0x70342f9d), TOBN(0x93a10aee, 0x1bc44a14),
+           TOBN(0xa7eed31b, 0x3efd0baa), TOBN(0x6e7c824e, 0x1d154e65)}},
+         {{TOBN(0xee23fa81, 0x9966e7ee), TOBN(0x64ec4aa8, 0x05b7920d),
+           TOBN(0x2d44462d, 0x2d90aad4), TOBN(0xf44dd195, 0xdf277ad5)},
+          {TOBN(0x8d6471f1, 0xbb46b6a1), TOBN(0x1e65d313, 0xfd885090),
+           TOBN(0x33a800f5, 0x13a977b4), TOBN(0xaca9d721, 0x0797e1ef)}},
+         {{TOBN(0x9a5a85a0, 0xfcff6a17), TOBN(0x9970a3f3, 0x1eca7cee),
+           TOBN(0xbb9f0d6b, 0xc9504be3), TOBN(0xe0c504be, 0xadd24ee2)},
+          {TOBN(0x7e09d956, 0x77fcc2f4), TOBN(0xef1a5227, 0x65bb5fc4),
+           TOBN(0x145d4fb1, 0x8b9286aa), TOBN(0x66fd0c5d, 0x6649028b)}},
+         {{TOBN(0x98857ceb, 0x1bf4581c), TOBN(0xe635e186, 0xaca7b166),
+           TOBN(0x278ddd22, 0x659722ac), TOBN(0xa0903c4c, 0x1db68007)},
+          {TOBN(0x366e4589, 0x48f21402), TOBN(0x31b49c14, 0xb96abda2),
+           TOBN(0x329c4b09, 0xe0403190), TOBN(0x97197ca3, 0xd29f43fe)}},
+         {{TOBN(0x8073dd1e, 0x274983d8), TOBN(0xda1a3bde, 0x55717c8f),
+           TOBN(0xfd3d4da2, 0x0361f9d1), TOBN(0x1332d081, 0x4c7de1ce)},
+          {TOBN(0x9b7ef7a3, 0xaa6d0e10), TOBN(0x17db2e73, 0xf54f1c4a),
+           TOBN(0xaf3dffae, 0x4cd35567), TOBN(0xaaa2f406, 0xe56f4e71)}},
+         {{TOBN(0x8966759e, 0x7ace3fc7), TOBN(0x9594eacf, 0x45a8d8c6),
+           TOBN(0x8de3bd8b, 0x91834e0e), TOBN(0xafe4ca53, 0x548c0421)},
+          {TOBN(0xfdd7e856, 0xe6ee81c6), TOBN(0x8f671beb, 0x6b891a3a),
+           TOBN(0xf7a58f2b, 0xfae63829), TOBN(0x9ab186fb, 0x9c11ac9f)}},
+         {{TOBN(0x8d6eb369, 0x10b5be76), TOBN(0x046b7739, 0xfb040bcd),
+           TOBN(0xccb4529f, 0xcb73de88), TOBN(0x1df0fefc, 0xcf26be03)},
+          {TOBN(0xad7757a6, 0xbcfcd027), TOBN(0xa8786c75, 0xbb3165ca),
+           TOBN(0xe9db1e34, 0x7e99a4d9), TOBN(0x99ee86df, 0xb06c504b)}},
+         {{TOBN(0x5b7c2ddd, 0xc15c9f0a), TOBN(0xdf87a734, 0x4295989e),
+           TOBN(0x59ece47c, 0x03d08fda), TOBN(0xb074d3dd, 0xad5fc702)},
+          {TOBN(0x20407903, 0x51a03776), TOBN(0x2bb1f77b, 0x2a608007),
+           TOBN(0x25c58f4f, 0xe1153185), TOBN(0xe6df62f6, 0x766e6447)}},
+         {{TOBN(0xefb3d1be, 0xed51275a), TOBN(0x5de47dc7, 0x2f0f483f),
+           TOBN(0x7932d98e, 0x97c2bedf), TOBN(0xd5c11927, 0x0219f8a1)},
+          {TOBN(0x9d751200, 0xa73a294e), TOBN(0x5f88434a, 0x9dc20172),
+           TOBN(0xd28d9fd3, 0xa26f506a), TOBN(0xa890cd31, 0x9d1dcd48)}},
+         {{TOBN(0x0aebaec1, 0x70f4d3b4), TOBN(0xfd1a1369, 0x0ffc8d00),
+           TOBN(0xb9d9c240, 0x57d57838), TOBN(0x45929d26, 0x68bac361)},
+          {TOBN(0x5a2cd060, 0x25b15ca6), TOBN(0x4b3c83e1, 0x6e474446),
+           TOBN(0x1aac7578, 0xee1e5134), TOBN(0xa418f5d6, 0xc91e2f41)}},
+         {{TOBN(0x6936fc8a, 0x213ed68b), TOBN(0x860ae7ed, 0x510a5224),
+           TOBN(0x63660335, 0xdef09b53), TOBN(0x641b2897, 0xcd79c98d)},
+          {TOBN(0x29bd38e1, 0x01110f35), TOBN(0x79c26f42, 0x648b1937),
+           TOBN(0x64dae519, 0x9d9164f4), TOBN(0xd85a2310, 0x0265c273)}},
+         {{TOBN(0x7173dd5d, 0x4b07e2b1), TOBN(0xd144c4cb, 0x8d9ea221),
+           TOBN(0xe8b04ea4, 0x1105ab14), TOBN(0x92dda542, 0xfe80d8f1)},
+          {TOBN(0xe9982fa8, 0xcf03dce6), TOBN(0x8b5ea965, 0x1a22cffc),
+           TOBN(0xf7f4ea7f, 0x3fad88c4), TOBN(0x62db773e, 0x6a5ba95c)}},
+         {{TOBN(0xd20f02fb, 0x93f24567), TOBN(0xfd46c69a, 0x315257ca),
+           TOBN(0x0ac74cc7, 0x8bcab987), TOBN(0x46f31c01, 0x5ceca2f5)},
+          {TOBN(0x40aedb59, 0x888b219e), TOBN(0xe50ecc37, 0xe1fccd02),
+           TOBN(0x1bcd9dad, 0x911f816c), TOBN(0x583cc1ec, 0x8db9b00c)}},
+         {{TOBN(0xf3cd2e66, 0xa483bf11), TOBN(0xfa08a6f5, 0xb1b2c169),
+           TOBN(0xf375e245, 0x4be9fa28), TOBN(0x99a7ffec, 0x5b6d011f)},
+          {TOBN(0x6a3ebddb, 0xc4ae62da), TOBN(0x6cea00ae, 0x374aef5d),
+           TOBN(0xab5fb98d, 0x9d4d05bc), TOBN(0x7cba1423, 0xd560f252)}},
+         {{TOBN(0x49b2cc21, 0x208490de), TOBN(0x1ca66ec3, 0xbcfb2879),
+           TOBN(0x7f1166b7, 0x1b6fb16f), TOBN(0xfff63e08, 0x65fe5db3)},
+          {TOBN(0xb8345abe, 0x8b2610be), TOBN(0xb732ed80, 0x39de3df4),
+           TOBN(0x0e24ed50, 0x211c32b4), TOBN(0xd10d8a69, 0x848ff27d)}},
+         {{TOBN(0xc1074398, 0xed4de248), TOBN(0xd7cedace, 0x10488927),
+           TOBN(0xa4aa6bf8, 0x85673e13), TOBN(0xb46bae91, 0x6daf30af)},
+          {TOBN(0x07088472, 0xfcef7ad8), TOBN(0x61151608, 0xd4b35e97),
+           TOBN(0xbcfe8f26, 0xdde29986), TOBN(0xeb84c4c7, 0xd5a34c79)}},
+         {{TOBN(0xc1eec55c, 0x164e1214), TOBN(0x891be86d, 0xa147bb03),
+           TOBN(0x9fab4d10, 0x0ba96835), TOBN(0xbf01e9b8, 0xa5c1ae9f)},
+          {TOBN(0x6b4de139, 0xb186ebc0), TOBN(0xd5c74c26, 0x85b91bca),
+           TOBN(0x5086a99c, 0xc2d93854), TOBN(0xeed62a7b, 0xa7a9dfbc)}},
+         {{TOBN(0x8778ed6f, 0x76b7618a), TOBN(0xbff750a5, 0x03b66062),
+           TOBN(0x4cb7be22, 0xb65186db), TOBN(0x369dfbf0, 0xcc3a6d13)},
+          {TOBN(0xc7dab26c, 0x7191a321), TOBN(0x9edac3f9, 0x40ed718e),
+           TOBN(0xbc142b36, 0xd0cfd183), TOBN(0xc8af82f6, 0x7c991693)}},
+         {{TOBN(0xb3d1e4d8, 0x97ce0b2a), TOBN(0xe6d7c87f, 0xc3a55cdf),
+           TOBN(0x35846b95, 0x68b81afe), TOBN(0x018d12af, 0xd3c239d8)},
+          {TOBN(0x2b2c6208, 0x01206e15), TOBN(0xe0e42453, 0xa3b882c6),
+           TOBN(0x854470a3, 0xa50162d5), TOBN(0x08157478, 0x7017a62a)}},
+         {{TOBN(0x18bd3fb4, 0x820357c7), TOBN(0x992039ae, 0x6f1458ad),
+           TOBN(0x9a1df3c5, 0x25b44aa1), TOBN(0x2d780357, 0xed3d5281)},
+          {TOBN(0x58cf7e4d, 0xc77ad4d4), TOBN(0xd49a7998, 0xf9df4fc4),
+           TOBN(0x4465a8b5, 0x1d71205e), TOBN(0xa0ee0ea6, 0x649254aa)}},
+         {{TOBN(0x4b5eeecf, 0xab7bd771), TOBN(0x6c873073, 0x35c262b9),
+           TOBN(0xdc5bd648, 0x3c9d61e7), TOBN(0x233d6d54, 0x321460d2)},
+          {TOBN(0xd20c5626, 0xfc195bcc), TOBN(0x25445958, 0x04d78b63),
+           TOBN(0xe03fcb3d, 0x17ec8ef3), TOBN(0x54b690d1, 0x46b8f781)}},
+         {{TOBN(0x82fa2c8a, 0x21230646), TOBN(0xf51aabb9, 0x084f418c),
+           TOBN(0xff4fbec1, 0x1a30ba43), TOBN(0x6a5acf73, 0x743c9df7)},
+          {TOBN(0x1da2b357, 0xd635b4d5), TOBN(0xc3de68dd, 0xecd5c1da),
+           TOBN(0xa689080b, 0xd61af0dd), TOBN(0xdea5938a, 0xd665bf99)}},
+         {{TOBN(0x0231d71a, 0xfe637294), TOBN(0x01968aa6, 0xa5a81cd8),
+           TOBN(0x11252d50, 0x048e63b5), TOBN(0xc446bc52, 0x6ca007e9)},
+          {TOBN(0xef8c50a6, 0x96d6134b), TOBN(0x9361fbf5, 0x9e09a05c),
+           TOBN(0xf17f85a6, 0xdca3291a), TOBN(0xb178d548, 0xff251a21)}},
+         {{TOBN(0x87f6374b, 0xa4df3915), TOBN(0x566ce1bf, 0x2fd5d608),
+           TOBN(0x425cba4d, 0x7de35102), TOBN(0x6b745f8f, 0x58c5d5e2)},
+          {TOBN(0x88402af6, 0x63122edf), TOBN(0x3190f9ed, 0x3b989a89),
+           TOBN(0x4ad3d387, 0xebba3156), TOBN(0xef385ad9, 0xc7c469a5)}},
+         {{TOBN(0xb08281de, 0x3f642c29), TOBN(0x20be0888, 0x910ffb88),
+           TOBN(0xf353dd4a, 0xd5292546), TOBN(0x3f1627de, 0x8377a262)},
+          {TOBN(0xa5faa013, 0xeefcd638), TOBN(0x8f3bf626, 0x74cc77c3),
+           TOBN(0x32618f65, 0xa348f55e), TOBN(0x5787c0dc, 0x9fefeb9e)}},
+         {{TOBN(0xf1673aa2, 0xd9a23e44), TOBN(0x88dfa993, 0x4e10690d),
+           TOBN(0x1ced1b36, 0x2bf91108), TOBN(0x9193ceca, 0x3af48649)},
+          {TOBN(0xfb34327d, 0x2d738fc5), TOBN(0x6697b037, 0x975fee6c),
+           TOBN(0x2f485da0, 0xc04079a5), TOBN(0x2cdf5735, 0x2feaa1ac)}},
+         {{TOBN(0x76944420, 0xbd55659e), TOBN(0x7973e32b, 0x4376090c),
+           TOBN(0x86bb4fe1, 0x163b591a), TOBN(0x10441aed, 0xc196f0ca)},
+          {TOBN(0x3b431f4a, 0x045ad915), TOBN(0x6c11b437, 0xa4afacb1),
+           TOBN(0x30b0c7db, 0x71fdbbd8), TOBN(0xb642931f, 0xeda65acd)}},
+         {{TOBN(0x4baae6e8, 0x9c92b235), TOBN(0xa73bbd0e, 0x6b3993a1),
+           TOBN(0xd06d60ec, 0x693dd031), TOBN(0x03cab91b, 0x7156881c)},
+          {TOBN(0xd615862f, 0x1db3574b), TOBN(0x485b0185, 0x64bb061a),
+           TOBN(0x27434988, 0xa0181e06), TOBN(0x2cd61ad4, 0xc1c0c757)}},
+         {{TOBN(0x3effed5a, 0x2ff9f403), TOBN(0x8dc98d8b, 0x62239029),
+           TOBN(0x2206021e, 0x1f17b70d), TOBN(0xafbec0ca, 0xbf510015)},
+          {TOBN(0x9fed7164, 0x80130dfa), TOBN(0x306dc2b5, 0x8a02dcf5),
+           TOBN(0x48f06620, 0xfeb10fc0), TOBN(0x78d1e1d5, 0x5a57cf51)}},
+         {{TOBN(0xadef8c5a, 0x192ef710), TOBN(0x88afbd4b, 0x3b7431f9),
+           TOBN(0x7e1f7407, 0x64250c9e), TOBN(0x6e31318d, 0xb58bec07)},
+          {TOBN(0xfd4fc4b8, 0x24f89b4e), TOBN(0x65a5dd88, 0x48c36a2a),
+           TOBN(0x4f1eccff, 0xf024baa7), TOBN(0x22a21cf2, 0xcba94650)}},
+         {{TOBN(0x95d29dee, 0x42a554f7), TOBN(0x828983a5, 0x002ec4ba),
+           TOBN(0x8112a1f7, 0x8badb73d), TOBN(0x79ea8897, 0xa27c1839)},
+          {TOBN(0x8969a5a7, 0xd065fd83), TOBN(0xf49af791, 0xb262a0bc),
+           TOBN(0xfcdea8b6, 0xaf2b5127), TOBN(0x10e913e1, 0x564c2dbc)}},
+         {{TOBN(0x51239d14, 0xbc21ef51), TOBN(0xe51c3ceb, 0x4ce57292),
+           TOBN(0x795ff068, 0x47bbcc3b), TOBN(0x86b46e1e, 0xbd7e11e6)},
+          {TOBN(0x0ea6ba23, 0x80041ef4), TOBN(0xd72fe505, 0x6262342e),
+           TOBN(0x8abc6dfd, 0x31d294d4), TOBN(0xbbe017a2, 0x1278c2c9)}},
+         {{TOBN(0xb1fcfa09, 0xb389328a), TOBN(0x322fbc62, 0xd01771b5),
+           TOBN(0x04c0d063, 0x60b045bf), TOBN(0xdb652edc, 0x10e52d01)},
+          {TOBN(0x50ef932c, 0x03ec6627), TOBN(0xde1b3b2d, 0xc1ee50e3),
+           TOBN(0x5ab7bdc5, 0xdc37a90d), TOBN(0xfea67213, 0x31e33a96)}},
+         {{TOBN(0x6482b5cb, 0x4f2999aa), TOBN(0x38476cc6, 0xb8cbf0dd),
+           TOBN(0x93ebfacb, 0x173405bb), TOBN(0x15cdafe7, 0xe52369ec)},
+          {TOBN(0xd42d5ba4, 0xd935b7db), TOBN(0x648b6004, 0x1c99a4cd),
+           TOBN(0x785101bd, 0xa3b5545b), TOBN(0x4bf2c38a, 0x9dd67faf)}},
+         {{TOBN(0xb1aadc63, 0x4442449c), TOBN(0xe0e9921a, 0x33ad4fb8),
+           TOBN(0x5c552313, 0xaa686d82), TOBN(0xdee635fa, 0x465d866c)},
+          {TOBN(0xbc3c224a, 0x18ee6e8a), TOBN(0xeed748a6, 0xed42e02f),
+           TOBN(0xe70f930a, 0xd474cd08), TOBN(0x774ea6ec, 0xfff24adf)}},
+         {{TOBN(0x03e2de1c, 0xf3480d4a), TOBN(0xf0d8edc7, 0xbc8acf1a),
+           TOBN(0xf23e3303, 0x68295a9c), TOBN(0xfadd5f68, 0xc546a97d)},
+          {TOBN(0x895597ad, 0x96f8acb1), TOBN(0xbddd49d5, 0x671bdae2),
+           TOBN(0x16fcd528, 0x21dd43f4), TOBN(0xa5a45412, 0x6619141a)}}},
+        {{{TOBN(0x8ce9b6bf, 0xc360e25a), TOBN(0xe6425195, 0x075a1a78),
+           TOBN(0x9dc756a8, 0x481732f4), TOBN(0x83c0440f, 0x5432b57a)},
+          {TOBN(0xc670b3f1, 0xd720281f), TOBN(0x2205910e, 0xd135e051),
+           TOBN(0xded14b0e, 0xdb052be7), TOBN(0x697b3d27, 0xc568ea39)}},
+         {{TOBN(0x2e599b9a, 0xfb3ff9ed), TOBN(0x28c2e0ab, 0x17f6515c),
+           TOBN(0x1cbee4fd, 0x474da449), TOBN(0x071279a4, 0x4f364452)},
+          {TOBN(0x97abff66, 0x01fbe855), TOBN(0x3ee394e8, 0x5fda51c4),
+           TOBN(0x190385f6, 0x67597c0b), TOBN(0x6e9fccc6, 0xa27ee34b)}},
+         {{TOBN(0x0b89de93, 0x14092ebb), TOBN(0xf17256bd, 0x428e240c),
+           TOBN(0xcf89a7f3, 0x93d2f064), TOBN(0x4f57841e, 0xe1ed3b14)},
+          {TOBN(0x4ee14405, 0xe708d855), TOBN(0x856aae72, 0x03f1c3d0),
+           TOBN(0xc8e5424f, 0xbdd7eed5), TOBN(0x3333e4ef, 0x73ab4270)}},
+         {{TOBN(0x3bc77ade, 0xdda492f8), TOBN(0xc11a3aea, 0x78297205),
+           TOBN(0x5e89a3e7, 0x34931b4c), TOBN(0x17512e2e, 0x9f5694bb)},
+          {TOBN(0x5dc349f3, 0x177bf8b6), TOBN(0x232ea4ba, 0x08c7ff3e),
+           TOBN(0x9c4f9d16, 0xf511145d), TOBN(0xccf109a3, 0x33b379c3)}},
+         {{TOBN(0xe75e7a88, 0xa1f25897), TOBN(0x7ac6961f, 0xa1b5d4d8),
+           TOBN(0xe3e10773, 0x08f3ed5c), TOBN(0x208a54ec, 0x0a892dfb)},
+          {TOBN(0xbe826e19, 0x78660710), TOBN(0x0cf70a97, 0x237df2c8),
+           TOBN(0x418a7340, 0xed704da5), TOBN(0xa3eeb9a9, 0x08ca33fd)}},
+         {{TOBN(0x49d96233, 0x169bca96), TOBN(0x04d286d4, 0x2da6aafb),
+           TOBN(0xc09606ec, 0xa0c2fa94), TOBN(0x8869d0d5, 0x23ff0fb3)},
+          {TOBN(0xa99937e5, 0xd0150d65), TOBN(0xa92e2503, 0x240c14c9),
+           TOBN(0x656bf945, 0x108e2d49), TOBN(0x152a733a, 0xa2f59e2b)}},
+         {{TOBN(0xb4323d58, 0x8434a920), TOBN(0xc0af8e93, 0x622103c5),
+           TOBN(0x667518ef, 0x938dbf9a), TOBN(0xa1843073, 0x83a9cdf2)},
+          {TOBN(0x350a94aa, 0x5447ab80), TOBN(0xe5e5a325, 0xc75a3d61),
+           TOBN(0x74ba507f, 0x68411a9e), TOBN(0x10581fc1, 0x594f70c5)}},
+         {{TOBN(0x60e28570, 0x80eb24a9), TOBN(0x7bedfb4d, 0x488e0cfd),
+           TOBN(0x721ebbd7, 0xc259cdb8), TOBN(0x0b0da855, 0xbc6390a9)},
+          {TOBN(0x2b4d04db, 0xde314c70), TOBN(0xcdbf1fbc, 0x6c32e846),
+           TOBN(0x33833eab, 0xb162fc9e), TOBN(0x9939b48b, 0xb0dd3ab7)}},
+         {{TOBN(0x5aaa98a7, 0xcb0c9c8c), TOBN(0x75105f30, 0x81c4375c),
+           TOBN(0xceee5057, 0x5ef1c90f), TOBN(0xb31e065f, 0xc23a17bf)},
+          {TOBN(0x5364d275, 0xd4b6d45a), TOBN(0xd363f3ad, 0x62ec8996),
+           TOBN(0xb5d21239, 0x4391c65b), TOBN(0x84564765, 0xebb41b47)}},
+         {{TOBN(0x20d18ecc, 0x37107c78), TOBN(0xacff3b6b, 0x570c2a66),
+           TOBN(0x22f975d9, 0x9bd0d845), TOBN(0xef0a0c46, 0xba178fa0)},
+          {TOBN(0x1a419651, 0x76b6028e), TOBN(0xc49ec674, 0x248612d4),
+           TOBN(0x5b6ac4f2, 0x7338af55), TOBN(0x06145e62, 0x7bee5a36)}},
+         {{TOBN(0x33e95d07, 0xe75746b5), TOBN(0x1c1e1f6d, 0xc40c78be),
+           TOBN(0x967833ef, 0x222ff8e2), TOBN(0x4bedcf6a, 0xb49180ad)},
+          {TOBN(0x6b37e9c1, 0x3d7a4c8a), TOBN(0x2748887c, 0x6ddfe760),
+           TOBN(0xf7055123, 0xaa3a5bbc), TOBN(0x954ff225, 0x7bbb8e74)}},
+         {{TOBN(0xc42b8ab1, 0x97c3dfb9), TOBN(0x55a549b0, 0xcf168154),
+           TOBN(0xad6748e7, 0xc1b50692), TOBN(0x2775780f, 0x6fc5cbcb)},
+          {TOBN(0x4eab80b8, 0xe1c9d7c8), TOBN(0x8c69dae1, 0x3fdbcd56),
+           TOBN(0x47e6b4fb, 0x9969eace), TOBN(0x002f1085, 0xa705cb5a)}},
+         {{TOBN(0x4e23ca44, 0x6d3fea55), TOBN(0xb4ae9c86, 0xf4810568),
+           TOBN(0x47bfb91b, 0x2a62f27d), TOBN(0x60deb4c9, 0xd9bac28c)},
+          {TOBN(0xa892d894, 0x7de6c34c), TOBN(0x4ee68259, 0x4494587d),
+           TOBN(0x914ee14e, 0x1a3f8a5b), TOBN(0xbb113eaa, 0x28700385)}},
+         {{TOBN(0x81ca03b9, 0x2115b4c9), TOBN(0x7c163d38, 0x8908cad1),
+           TOBN(0xc912a118, 0xaa18179a), TOBN(0xe09ed750, 0x886e3081)},
+          {TOBN(0xa676e3fa, 0x26f516ca), TOBN(0x753cacf7, 0x8e732f91),
+           TOBN(0x51592aea, 0x833da8b4), TOBN(0xc626f42f, 0x4cbea8aa)}},
+         {{TOBN(0xef9dc899, 0xa7b56eaf), TOBN(0x00c0e52c, 0x34ef7316),
+           TOBN(0x5b1e4e24, 0xfe818a86), TOBN(0x9d31e20d, 0xc538be47)},
+          {TOBN(0x22eb932d, 0x3ed68974), TOBN(0xe44bbc08, 0x7c4e87c4),
+           TOBN(0x4121086e, 0x0dde9aef), TOBN(0x8e6b9cff, 0x134f4345)}},
+         {{TOBN(0x96892c1f, 0x711b0eb9), TOBN(0xb905f2c8, 0x780ab954),
+           TOBN(0xace26309, 0xa20792db), TOBN(0xec8ac9b3, 0x0684e126)},
+          {TOBN(0x486ad8b6, 0xb40a2447), TOBN(0x60121fc1, 0x9fe3fb24),
+           TOBN(0x5626fccf, 0x1a8e3b3f), TOBN(0x4e568622, 0x6ad1f394)}},
+         {{TOBN(0xda7aae0d, 0x196aa5a1), TOBN(0xe0df8c77, 0x1041b5fb),
+           TOBN(0x451465d9, 0x26b318b7), TOBN(0xc29b6e55, 0x7ab136e9)},
+          {TOBN(0x2c2ab48b, 0x71148463), TOBN(0xb5738de3, 0x64454a76),
+           TOBN(0x54ccf9a0, 0x5a03abe4), TOBN(0x377c0296, 0x0427d58e)}},
+         {{TOBN(0x73f5f0b9, 0x2bb39c1f), TOBN(0x14373f2c, 0xe608d8c5),
+           TOBN(0xdcbfd314, 0x00fbb805), TOBN(0xdf18fb20, 0x83afdcfb)},
+          {TOBN(0x81a57f42, 0x42b3523f), TOBN(0xe958532d, 0x87f650fb),
+           TOBN(0xaa8dc8b6, 0x8b0a7d7c), TOBN(0x1b75dfb7, 0x150166be)}},
+         {{TOBN(0x90e4f7c9, 0x2d7d1413), TOBN(0x67e2d6b5, 0x9834f597),
+           TOBN(0x4fd4f4f9, 0xa808c3e8), TOBN(0xaf8237e0, 0xd5281ec1)},
+          {TOBN(0x25ab5fdc, 0x84687cee), TOBN(0xc5ded6b1, 0xa5b26c09),
+           TOBN(0x8e4a5aec, 0xc8ea7650), TOBN(0x23b73e5c, 0x14cc417f)}},
+         {{TOBN(0x2bfb4318, 0x3037bf52), TOBN(0xb61e6db5, 0x78c725d7),
+           TOBN(0x8efd4060, 0xbbb3e5d7), TOBN(0x2e014701, 0xdbac488e)},
+          {TOBN(0xac75cf9a, 0x360aa449), TOBN(0xb70cfd05, 0x79634d08),
+           TOBN(0xa591536d, 0xfffb15ef), TOBN(0xb2c37582, 0xd07c106c)}},
+         {{TOBN(0xb4293fdc, 0xf50225f9), TOBN(0xc52e175c, 0xb0e12b03),
+           TOBN(0xf649c3ba, 0xd0a8bf64), TOBN(0x745a8fef, 0xeb8ae3c6)},
+          {TOBN(0x30d7e5a3, 0x58321bc3), TOBN(0xb1732be7, 0x0bc4df48),
+           TOBN(0x1f217993, 0xe9ea5058), TOBN(0xf7a71cde, 0x3e4fd745)}},
+         {{TOBN(0x86cc533e, 0x894c5bbb), TOBN(0x6915c7d9, 0x69d83082),
+           TOBN(0xa6aa2d05, 0x5815c244), TOBN(0xaeeee592, 0x49b22ce5)},
+          {TOBN(0x89e39d13, 0x78135486), TOBN(0x3a275c1f, 0x16b76f2f),
+           TOBN(0xdb6bcc1b, 0xe036e8f5), TOBN(0x4df69b21, 0x5e4709f5)}},
+         {{TOBN(0xa188b250, 0x2d0f39aa), TOBN(0x622118bb, 0x15a85947),
+           TOBN(0x2ebf520f, 0xfde0f4fa), TOBN(0xa40e9f29, 0x4860e539)},
+          {TOBN(0x7b6a51eb, 0x22b57f0f), TOBN(0x849a33b9, 0x7e80644a),
+           TOBN(0x50e5d16f, 0x1cf095fe), TOBN(0xd754b54e, 0xec55f002)}},
+         {{TOBN(0x5cfbbb22, 0x236f4a98), TOBN(0x0b0c59e9, 0x066800bb),
+           TOBN(0x4ac69a8f, 0x5a9a7774), TOBN(0x2b33f804, 0xd6bec948)},
+          {TOBN(0xb3729295, 0x32e6c466), TOBN(0x68956d0f, 0x4e599c73),
+           TOBN(0xa47a249f, 0x155c31cc), TOBN(0x24d80f0d, 0xe1ce284e)}},
+         {{TOBN(0xcd821dfb, 0x988baf01), TOBN(0xe6331a7d, 0xdbb16647),
+           TOBN(0x1eb8ad33, 0x094cb960), TOBN(0x593cca38, 0xc91bbca5)},
+          {TOBN(0x384aac8d, 0x26567456), TOBN(0x40fa0309, 0xc04b6490),
+           TOBN(0x97834cd6, 0xdab6c8f6), TOBN(0x68a7318d, 0x3f91e55f)}},
+         {{TOBN(0xa00fd04e, 0xfc4d3157), TOBN(0xb56f8ab2, 0x2bf3bdea),
+           TOBN(0x014f5648, 0x4fa57172), TOBN(0x948c5860, 0x450abdb3)},
+          {TOBN(0x342b5df0, 0x0ebd4f08), TOBN(0x3e5168cd, 0x0e82938e),
+           TOBN(0x7aedc1ce, 0xb0df5dd0), TOBN(0x6bbbc6d9, 0xe5732516)}},
+         {{TOBN(0xc7bfd486, 0x605daaa6), TOBN(0x46fd72b7, 0xbb9a6c9e),
+           TOBN(0xe4847fb1, 0xa124fb89), TOBN(0x75959cbd, 0xa2d8ffbc)},
+          {TOBN(0x42579f65, 0xc8a588ee), TOBN(0x368c92e6, 0xb80b499d),
+           TOBN(0xea4ef6cd, 0x999a5df1), TOBN(0xaa73bb7f, 0x936fe604)}},
+         {{TOBN(0xf347a70d, 0x6457d188), TOBN(0x86eda86b, 0x8b7a388b),
+           TOBN(0xb7cdff06, 0x0ccd6013), TOBN(0xbeb1b6c7, 0xd0053fb2)},
+          {TOBN(0x0b022387, 0x99240a9f), TOBN(0x1bbb384f, 0x776189b2),
+           TOBN(0x8695e71e, 0x9066193a), TOBN(0x2eb50097, 0x06ffac7e)}},
+         {{TOBN(0x0654a9c0, 0x4a7d2caa), TOBN(0x6f3fb3d1, 0xa5aaa290),
+           TOBN(0x835db041, 0xff476e8f), TOBN(0x540b8b0b, 0xc42295e4)},
+          {TOBN(0xa5c73ac9, 0x05e214f5), TOBN(0x9a74075a, 0x56a0b638),
+           TOBN(0x2e4b1090, 0xce9e680b), TOBN(0x57a5b479, 0x6b8d9afa)}},
+         {{TOBN(0x0dca48e7, 0x26bfe65c), TOBN(0x097e391c, 0x7290c307),
+           TOBN(0x683c462e, 0x6669e72e), TOBN(0xf505be1e, 0x062559ac)},
+          {TOBN(0x5fbe3ea1, 0xe3a3035a), TOBN(0x6431ebf6, 0x9cd50da8),
+           TOBN(0xfd169d5c, 0x1f6407f2), TOBN(0x8d838a95, 0x60fce6b8)}},
+         {{TOBN(0x2a2bfa7f, 0x650006f0), TOBN(0xdfd7dad3, 0x50c0fbb2),
+           TOBN(0x92452495, 0xccf9ad96), TOBN(0x183bf494, 0xd95635f9)},
+          {TOBN(0x02d5df43, 0x4a7bd989), TOBN(0x505385cc, 0xa5431095),
+           TOBN(0xdd98e67d, 0xfd43f53e), TOBN(0xd61e1a6c, 0x500c34a9)}},
+         {{TOBN(0x5a4b46c6, 0x4a8a3d62), TOBN(0x8469c4d0, 0x247743d2),
+           TOBN(0x2bb3a13d, 0x88f7e433), TOBN(0x62b23a10, 0x01be5849)},
+          {TOBN(0xe83596b4, 0xa63d1a4c), TOBN(0x454e7fea, 0x7d183f3e),
+           TOBN(0x643fce61, 0x17afb01c), TOBN(0x4e65e5e6, 0x1c4c3638)}},
+         {{TOBN(0x41d85ea1, 0xef74c45b), TOBN(0x2cfbfa66, 0xae328506),
+           TOBN(0x98b078f5, 0x3ada7da9), TOBN(0xd985fe37, 0xec752fbb)},
+          {TOBN(0xeece68fe, 0x5a0148b4), TOBN(0x6f9a55c7, 0x2d78136d),
+           TOBN(0x232dccc4, 0xd2b729ce), TOBN(0xa27e0dfd, 0x90aafbc4)}},
+         {{TOBN(0x96474452, 0x12b4603e), TOBN(0xa876c551, 0x6b706d14),
+           TOBN(0xdf145fcf, 0x69a9d412), TOBN(0xe2ab75b7, 0x2d479c34)},
+          {TOBN(0x12df9a76, 0x1a23ff97), TOBN(0xc6138992, 0x5d359d10),
+           TOBN(0x6e51c7ae, 0xfa835f22), TOBN(0x69a79cb1, 0xc0fcc4d9)}},
+         {{TOBN(0xf57f350d, 0x594cc7e1), TOBN(0x3079ca63, 0x3350ab79),
+           TOBN(0x226fb614, 0x9aff594a), TOBN(0x35afec02, 0x6d59a62b)},
+          {TOBN(0x9bee46f4, 0x06ed2c6e), TOBN(0x58da1735, 0x7d939a57),
+           TOBN(0x44c50402, 0x8fd1797e), TOBN(0xd8853e7c, 0x5ccea6ca)}},
+         {{TOBN(0x4065508d, 0xa35fcd5f), TOBN(0x8965df8c, 0x495ccaeb),
+           TOBN(0x0f2da850, 0x12e1a962), TOBN(0xee471b94, 0xc1cf1cc4)},
+          {TOBN(0xcef19bc8, 0x0a08fb75), TOBN(0x704958f5, 0x81de3591),
+           TOBN(0x2867f8b2, 0x3aef4f88), TOBN(0x8d749384, 0xea9f9a5f)}},
+         {{TOBN(0x1b385537, 0x8c9049f4), TOBN(0x5be948f3, 0x7b92d8b6),
+           TOBN(0xd96f725d, 0xb6e2bd6b), TOBN(0x37a222bc, 0x958c454d)},
+          {TOBN(0xe7c61abb, 0x8809bf61), TOBN(0x46f07fbc, 0x1346f18d),
+           TOBN(0xfb567a7a, 0xe87c0d1c), TOBN(0x84a461c8, 0x7ef3d07a)}},
+         {{TOBN(0x0a5adce6, 0xd9278d98), TOBN(0x24d94813, 0x9dfc73e1),
+           TOBN(0x4f3528b6, 0x054321c3), TOBN(0x2e03fdde, 0x692ea706)},
+          {TOBN(0x10e60619, 0x47b533c0), TOBN(0x1a8bc73f, 0x2ca3c055),
+           TOBN(0xae58d4b2, 0x1bb62b8f), TOBN(0xb2045a73, 0x584a24e3)}},
+         {{TOBN(0x3ab3d5af, 0xbd76e195), TOBN(0x478dd1ad, 0x6938a810),
+           TOBN(0x6ffab393, 0x6ee3d5cb), TOBN(0xdfb693db, 0x22b361e4)},
+          {TOBN(0xf9694496, 0x51dbf1a7), TOBN(0xcab4b4ef, 0x08a2e762),
+           TOBN(0xe8c92f25, 0xd39bba9a), TOBN(0x850e61bc, 0xf1464d96)}},
+         {{TOBN(0xb7e830e3, 0xdc09508b), TOBN(0xfaf6d2cf, 0x74317655),
+           TOBN(0x72606ceb, 0xdf690355), TOBN(0x48bb92b3, 0xd0c3ded6)},
+          {TOBN(0x65b75484, 0x5c7cf892), TOBN(0xf6cd7ac9, 0xd5d5f01f),
+           TOBN(0xc2c30a59, 0x96401d69), TOBN(0x91268650, 0xed921878)}},
+         {{TOBN(0x380bf913, 0xb78c558f), TOBN(0x43c0baeb, 0xc8afdaa9),
+           TOBN(0x377f61d5, 0x54f169d3), TOBN(0xf8da07e3, 0xae5ff20b)},
+          {TOBN(0xb676c49d, 0xa8a90ea8), TOBN(0x81c1ff2b, 0x83a29b21),
+           TOBN(0x383297ac, 0x2ad8d276), TOBN(0x3001122f, 0xba89f982)}},
+         {{TOBN(0xe1d794be, 0x6718e448), TOBN(0x246c1482, 0x7c3e6e13),
+           TOBN(0x56646ef8, 0x5d26b5ef), TOBN(0x80f5091e, 0x88069cdd)},
+          {TOBN(0xc5992e2f, 0x724bdd38), TOBN(0x02e915b4, 0x8471e8c7),
+           TOBN(0x96ff320a, 0x0d0ff2a9), TOBN(0xbf886487, 0x4384d1a0)}},
+         {{TOBN(0xbbe1e6a6, 0xc93f72d6), TOBN(0xd5f75d12, 0xcad800ea),
+           TOBN(0xfa40a09f, 0xe7acf117), TOBN(0x32c8cdd5, 0x7581a355)},
+          {TOBN(0x74221992, 0x7023c499), TOBN(0xa8afe5d7, 0x38ec3901),
+           TOBN(0x5691afcb, 0xa90e83f0), TOBN(0x41bcaa03, 0x0b8f8eac)}},
+         {{TOBN(0xe38b5ff9, 0x8d2668d5), TOBN(0x0715281a, 0x7ad81965),
+           TOBN(0x1bc8fc7c, 0x03c6ce11), TOBN(0xcbbee6e2, 0x8b650436)},
+          {TOBN(0x06b00fe8, 0x0cdb9808), TOBN(0x17d6e066, 0xfe3ed315),
+           TOBN(0x2e9d38c6, 0x4d0b5018), TOBN(0xab8bfd56, 0x844dcaef)}},
+         {{TOBN(0x42894a59, 0x513aed8b), TOBN(0xf77f3b6d, 0x314bd07a),
+           TOBN(0xbbdecb8f, 0x8e42b582), TOBN(0xf10e2fa8, 0xd2390fe6)},
+          {TOBN(0xefb95022, 0x62a2f201), TOBN(0x4d59ea50, 0x50ee32b0),
+           TOBN(0xd87f7728, 0x6da789a8), TOBN(0xcf98a2cf, 0xf79492c4)}},
+         {{TOBN(0xf9577239, 0x720943c2), TOBN(0xba044cf5, 0x3990b9d0),
+           TOBN(0x5aa8e823, 0x95f2884a), TOBN(0x834de6ed, 0x0278a0af)},
+          {TOBN(0xc8e1ee9a, 0x5f25bd12), TOBN(0x9259ceaa, 0x6f7ab271),
+           TOBN(0x7e6d97a2, 0x77d00b76), TOBN(0x5c0c6eea, 0xa437832a)}},
+         {{TOBN(0x5232c20f, 0x5606b81d), TOBN(0xabd7b375, 0x0d991ee5),
+           TOBN(0x4d2bfe35, 0x8632d951), TOBN(0x78f85146, 0x98ed9364)},
+          {TOBN(0x951873f0, 0xf30c3282), TOBN(0x0da8ac80, 0xa789230b),
+           TOBN(0x3ac7789c, 0x5398967f), TOBN(0xa69b8f7f, 0xbdda0fb5)}},
+         {{TOBN(0xe5db7717, 0x6add8545), TOBN(0x1b71cb66, 0x72c49b66),
+           TOBN(0xd8560739, 0x68421d77), TOBN(0x03840fe8, 0x83e3afea)},
+          {TOBN(0xb391dad5, 0x1ec69977), TOBN(0xae243fb9, 0x307f6726),
+           TOBN(0xc88ac87b, 0xe8ca160c), TOBN(0x5174cced, 0x4ce355f4)}},
+         {{TOBN(0x98a35966, 0xe58ba37d), TOBN(0xfdcc8da2, 0x7817335d),
+           TOBN(0x5b752830, 0x83fbc7bf), TOBN(0x68e419d4, 0xd9c96984)},
+          {TOBN(0x409a39f4, 0x02a40380), TOBN(0x88940faf, 0x1fe977bc),
+           TOBN(0xc640a94b, 0x8f8edea6), TOBN(0x1e22cd17, 0xed11547d)}},
+         {{TOBN(0xe28568ce, 0x59ffc3e2), TOBN(0x60aa1b55, 0xc1dee4e7),
+           TOBN(0xc67497c8, 0x837cb363), TOBN(0x06fb438a, 0x105a2bf2)},
+          {TOBN(0x30357ec4, 0x500d8e20), TOBN(0x1ad9095d, 0x0670db10),
+           TOBN(0x7f589a05, 0xc73b7cfd), TOBN(0xf544607d, 0x880d6d28)}},
+         {{TOBN(0x17ba93b1, 0xa20ef103), TOBN(0xad859130, 0x6ba6577b),
+           TOBN(0x65c91cf6, 0x6fa214a0), TOBN(0xd7d49c6c, 0x27990da5)},
+          {TOBN(0xecd9ec8d, 0x20bb569d), TOBN(0xbd4b2502, 0xeeffbc33),
+           TOBN(0x2056ca5a, 0x6bed0467), TOBN(0x7916a1f7, 0x5b63728c)}},
+         {{TOBN(0xd4f9497d, 0x53a4f566), TOBN(0x89734664, 0x97b56810),
+           TOBN(0xf8e1da74, 0x0494a621), TOBN(0x82546a93, 0x8d011c68)},
+          {TOBN(0x1f3acb19, 0xc61ac162), TOBN(0x52f8fa9c, 0xabad0d3e),
+           TOBN(0x15356523, 0xb4b7ea43), TOBN(0x5a16ad61, 0xae608125)}},
+         {{TOBN(0xb0bcb87f, 0x4faed184), TOBN(0x5f236b1d, 0x5029f45f),
+           TOBN(0xd42c7607, 0x0bc6b1fc), TOBN(0xc644324e, 0x68aefce3)},
+          {TOBN(0x8e191d59, 0x5c5d8446), TOBN(0xc0208077, 0x13ae1979),
+           TOBN(0xadcaee55, 0x3ba59cc7), TOBN(0x20ed6d6b, 0xa2cb81ba)}},
+         {{TOBN(0x0952ba19, 0xb6efcffc), TOBN(0x60f12d68, 0x97c0b87c),
+           TOBN(0x4ee2c7c4, 0x9caa30bc), TOBN(0x767238b7, 0x97fbff4e)},
+          {TOBN(0xebc73921, 0x501b5d92), TOBN(0x3279e3df, 0xc2a37737),
+           TOBN(0x9fc12bc8, 0x6d197543), TOBN(0xfa94dc6f, 0x0a40db4e)}},
+         {{TOBN(0x7392b41a, 0x530ccbbd), TOBN(0x87c82146, 0xea823525),
+           TOBN(0xa52f984c, 0x05d98d0c), TOBN(0x2ae57d73, 0x5ef6974c)},
+          {TOBN(0x9377f7bf, 0x3042a6dd), TOBN(0xb1a007c0, 0x19647a64),
+           TOBN(0xfaa9079a, 0x0cca9767), TOBN(0x3d81a25b, 0xf68f72d5)}},
+         {{TOBN(0x752067f8, 0xff81578e), TOBN(0x78622150, 0x9045447d),
+           TOBN(0xc0c22fcf, 0x0505aa6f), TOBN(0x1030f0a6, 0x6bed1c77)},
+          {TOBN(0x31f29f15, 0x1f0bd739), TOBN(0x2d7989c7, 0xe6debe85),
+           TOBN(0x5c070e72, 0x8e677e98), TOBN(0x0a817bd3, 0x06e81fd5)}},
+         {{TOBN(0xc110d830, 0xb0f2ac95), TOBN(0x48d0995a, 0xab20e64e),
+           TOBN(0x0f3e00e1, 0x7729cd9a), TOBN(0x2a570c20, 0xdd556946)},
+          {TOBN(0x912dbcfd, 0x4e86214d), TOBN(0x2d014ee2, 0xcf615498),
+           TOBN(0x55e2b1e6, 0x3530d76e), TOBN(0xc5135ae4, 0xfd0fd6d1)}},
+         {{TOBN(0x0066273a, 0xd4f3049f), TOBN(0xbb8e9893, 0xe7087477),
+           TOBN(0x2dba1ddb, 0x14c6e5fd), TOBN(0xdba37886, 0x51f57e6c)},
+          {TOBN(0x5aaee0a6, 0x5a72f2cf), TOBN(0x1208bfbf, 0x7bea5642),
+           TOBN(0xf5c6aa3b, 0x67872c37), TOBN(0xd726e083, 0x43f93224)}},
+         {{TOBN(0x1854daa5, 0x061f1658), TOBN(0xc0016df1, 0xdf0cd2b3),
+           TOBN(0xc2a3f23e, 0x833d50de), TOBN(0x73b681d2, 0xbbbd3017)},
+          {TOBN(0x2f046dc4, 0x3ac343c0), TOBN(0x9c847e7d, 0x85716421),
+           TOBN(0xe1e13c91, 0x0917eed4), TOBN(0x3fc9eebd, 0x63a1b9c6)}},
+         {{TOBN(0x0f816a72, 0x7fe02299), TOBN(0x6335ccc2, 0x294f3319),
+           TOBN(0x3820179f, 0x4745c5be), TOBN(0xe647b782, 0x922f066e)},
+          {TOBN(0xc22e49de, 0x02cafb8a), TOBN(0x299bc2ff, 0xfcc2eccc),
+           TOBN(0x9a8feea2, 0x6e0e8282), TOBN(0xa627278b, 0xfe893205)}},
+         {{TOBN(0xa7e19733, 0x7933e47b), TOBN(0xf4ff6b13, 0x2e766402),
+           TOBN(0xa4d8be0a, 0x98440d9f), TOBN(0x658f5c2f, 0x38938808)},
+          {TOBN(0x90b75677, 0xc95b3b3e), TOBN(0xfa044269, 0x3137b6ff),
+           TOBN(0x077b039b, 0x43c47c29), TOBN(0xcca95dd3, 0x8a6445b2)}},
+         {{TOBN(0x0b498ba4, 0x2333fc4c), TOBN(0x274f8e68, 0xf736a1b1),
+           TOBN(0x6ca348fd, 0x5f1d4b2e), TOBN(0x24d3be78, 0xa8f10199)},
+          {TOBN(0x8535f858, 0xca14f530), TOBN(0xa6e7f163, 0x5b982e51),
+           TOBN(0x847c8512, 0x36e1bf62), TOBN(0xf6a7c58e, 0x03448418)}},
+         {{TOBN(0x583f3703, 0xf9374ab6), TOBN(0x864f9195, 0x6e564145),
+           TOBN(0x33bc3f48, 0x22526d50), TOBN(0x9f323c80, 0x1262a496)},
+          {TOBN(0xaa97a7ae, 0x3f046a9a), TOBN(0x70da183e, 0xdf8a039a),
+           TOBN(0x5b68f71c, 0x52aa0ba6), TOBN(0x9be0fe51, 0x21459c2d)}},
+         {{TOBN(0xc1e17eb6, 0xcbc613e5), TOBN(0x33131d55, 0x497ea61c),
+           TOBN(0x2f69d39e, 0xaf7eded5), TOBN(0x73c2f434, 0xde6af11b)},
+          {TOBN(0x4ca52493, 0xa4a375fa), TOBN(0x5f06787c, 0xb833c5c2),
+           TOBN(0x814e091f, 0x3e6e71cf), TOBN(0x76451f57, 0x8b746666)}}},
+        {{{TOBN(0x80f9bdef, 0x694db7e0), TOBN(0xedca8787, 0xb9fcddc6),
+           TOBN(0x51981c34, 0x03b8dce1), TOBN(0x4274dcf1, 0x70e10ba1)},
+          {TOBN(0xf72743b8, 0x6def6d1a), TOBN(0xd25b1670, 0xebdb1866),
+           TOBN(0xc4491e8c, 0x050c6f58), TOBN(0x2be2b2ab, 0x87fbd7f5)}},
+         {{TOBN(0x3e0e5c9d, 0xd111f8ec), TOBN(0xbcc33f8d, 0xb7c4e760),
+           TOBN(0x702f9a91, 0xbd392a51), TOBN(0x7da4a795, 0xc132e92d)},
+          {TOBN(0x1a0b0ae3, 0x0bb1151b), TOBN(0x54febac8, 0x02e32251),
+           TOBN(0xea3a5082, 0x694e9e78), TOBN(0xe58ffec1, 0xe4fe40b8)}},
+         {{TOBN(0xf85592fc, 0xd1e0cf9e), TOBN(0xdea75f0d, 0xc0e7b2e8),
+           TOBN(0xc04215cf, 0xc135584e), TOBN(0x174fc727, 0x2f57092a)},
+          {TOBN(0xe7277877, 0xeb930bea), TOBN(0x504caccb, 0x5eb02a5a),
+           TOBN(0xf9fe08f7, 0xf5241b9b), TOBN(0xe7fb62f4, 0x8d5ca954)}},
+         {{TOBN(0xfbb8349d, 0x29c4120b), TOBN(0x9f94391f, 0xc0d0d915),
+           TOBN(0xc4074fa7, 0x5410ba51), TOBN(0xa66adbf6, 0x150a5911)},
+          {TOBN(0xc164543c, 0x34bfca38), TOBN(0xe0f27560, 0xb9e1ccfc),
+           TOBN(0x99da0f53, 0xe820219c), TOBN(0xe8234498, 0xc6b4997a)}},
+         {{TOBN(0xcfb88b76, 0x9d4c5423), TOBN(0x9e56eb10, 0xb0521c49),
+           TOBN(0x418e0b5e, 0xbe8700a1), TOBN(0x00cbaad6, 0xf93cb58a)},
+          {TOBN(0xe923fbde, 0xd92a5e67), TOBN(0xca4979ac, 0x1f347f11),
+           TOBN(0x89162d85, 0x6bc0585b), TOBN(0xdd6254af, 0xac3c70e3)}},
+         {{TOBN(0x7b23c513, 0x516e19e4), TOBN(0x56e2e847, 0xc5c4d593),
+           TOBN(0x9f727d73, 0x5ce71ef6), TOBN(0x5b6304a6, 0xf79a44c5)},
+          {TOBN(0x6638a736, 0x3ab7e433), TOBN(0x1adea470, 0xfe742f83),
+           TOBN(0xe054b854, 0x5b7fc19f), TOBN(0xf935381a, 0xba1d0698)}},
+         {{TOBN(0x546eab2d, 0x799e9a74), TOBN(0x96239e0e, 0xa949f729),
+           TOBN(0xca274c6b, 0x7090055a), TOBN(0x835142c3, 0x9020c9b0)},
+          {TOBN(0xa405667a, 0xa2e8807f), TOBN(0x29f2c085, 0x1aa3d39e),
+           TOBN(0xcc555d64, 0x42fc72f5), TOBN(0xe856e0e7, 0xfbeacb3c)}},
+         {{TOBN(0xb5504f9d, 0x918e4936), TOBN(0x65035ef6, 0xb2513982),
+           TOBN(0x0553a0c2, 0x6f4d9cb9), TOBN(0x6cb10d56, 0xbea85509)},
+          {TOBN(0x48d957b7, 0xa242da11), TOBN(0x16a4d3dd, 0x672b7268),
+           TOBN(0x3d7e637c, 0x8502a96b), TOBN(0x27c7032b, 0x730d463b)}},
+         {{TOBN(0xbdc02b18, 0xe4136a14), TOBN(0xbacf969d, 0x678e32bf),
+           TOBN(0xc98d89a3, 0xdd9c3c03), TOBN(0x7b92420a, 0x23becc4f)},
+          {TOBN(0xd4b41f78, 0xc64d565c), TOBN(0x9f969d00, 0x10f28295),
+           TOBN(0xec7f7f76, 0xb13d051a), TOBN(0x08945e1e, 0xa92da585)}},
+         {{TOBN(0x55366b7d, 0x5846426f), TOBN(0xe7d09e89, 0x247d441d),
+           TOBN(0x510b404d, 0x736fbf48), TOBN(0x7fa003d0, 0xe784bd7d)},
+          {TOBN(0x25f7614f, 0x17fd9596), TOBN(0x49e0e0a1, 0x35cb98db),
+           TOBN(0x2c65957b, 0x2e83a76a), TOBN(0x5d40da8d, 0xcddbe0f8)}},
+         {{TOBN(0xf2b8c405, 0x050bad24), TOBN(0x8918426d, 0xc2aa4823),
+           TOBN(0x2aeab3dd, 0xa38365a7), TOBN(0x72031717, 0x7c91b690)},
+          {TOBN(0x8b00d699, 0x60a94120), TOBN(0x478a255d, 0xe99eaeec),
+           TOBN(0xbf656a5f, 0x6f60aafd), TOBN(0xdfd7cb75, 0x5dee77b3)}},
+         {{TOBN(0x37f68bb4, 0xa595939d), TOBN(0x03556479, 0x28740217),
+           TOBN(0x8e740e7c, 0x84ad7612), TOBN(0xd89bc843, 0x9044695f)},
+          {TOBN(0xf7f3da5d, 0x85a9184d), TOBN(0x562563bb, 0x9fc0b074),
+           TOBN(0x06d2e6aa, 0xf88a888e), TOBN(0x612d8643, 0x161fbe7c)}},
+         {{TOBN(0x465edba7, 0xf64085e7), TOBN(0xb230f304, 0x29aa8511),
+           TOBN(0x53388426, 0xcda2d188), TOBN(0x90885735, 0x4b666649)},
+          {TOBN(0x6f02ff9a, 0x652f54f6), TOBN(0x65c82294, 0x5fae2bf0),
+           TOBN(0x7816ade0, 0x62f5eee3), TOBN(0xdcdbdf43, 0xfcc56d70)}},
+         {{TOBN(0x9fb3bba3, 0x54530bb2), TOBN(0xbde3ef77, 0xcb0869ea),
+           TOBN(0x89bc9046, 0x0b431163), TOBN(0x4d03d7d2, 0xe4819a35)},
+          {TOBN(0x33ae4f9e, 0x43b6a782), TOBN(0x216db307, 0x9c88a686),
+           TOBN(0x91dd88e0, 0x00ffedd9), TOBN(0xb280da9f, 0x12bd4840)}},
+         {{TOBN(0x32a7cb8a, 0x1635e741), TOBN(0xfe14008a, 0x78be02a7),
+           TOBN(0x3fafb334, 0x1b7ae030), TOBN(0x7fd508e7, 0x5add0ce9)},
+          {TOBN(0x72c83219, 0xd607ad51), TOBN(0x0f229c0a, 0x8d40964a),
+           TOBN(0x1be2c336, 0x1c878da2), TOBN(0xe0c96742, 0xeab2ab86)}},
+         {{TOBN(0x458f8691, 0x3e538cd7), TOBN(0xa7001f6c, 0x8e08ad53),
+           TOBN(0x52b8c6e6, 0xbf5d15ff), TOBN(0x548234a4, 0x011215dd)},
+          {TOBN(0xff5a9d2d, 0x3d5b4045), TOBN(0xb0ffeeb6, 0x4a904190),
+           TOBN(0x55a3aca4, 0x48607f8b), TOBN(0x8cbd665c, 0x30a0672a)}},
+         {{TOBN(0x87f834e0, 0x42583068), TOBN(0x02da2aeb, 0xf3f6e683),
+           TOBN(0x6b763e5d, 0x05c12248), TOBN(0x7230378f, 0x65a8aefc)},
+          {TOBN(0x93bd80b5, 0x71e8e5ca), TOBN(0x53ab041c, 0xb3b62524),
+           TOBN(0x1b860513, 0x6c9c552e), TOBN(0xe84d402c, 0xd5524e66)}},
+         {{TOBN(0xa37f3573, 0xf37f5937), TOBN(0xeb0f6c7d, 0xd1e4fca5),
+           TOBN(0x2965a554, 0xac8ab0fc), TOBN(0x17fbf56c, 0x274676ac)},
+          {TOBN(0x2e2f6bd9, 0xacf7d720), TOBN(0x41fc8f88, 0x10224766),
+           TOBN(0x517a14b3, 0x85d53bef), TOBN(0xdae327a5, 0x7d76a7d1)}},
+         {{TOBN(0x6ad0a065, 0xc4818267), TOBN(0x33aa189b, 0x37c1bbc1),
+           TOBN(0x64970b52, 0x27392a92), TOBN(0x21699a1c, 0x2d1535ea)},
+          {TOBN(0xcd20779c, 0xc2d7a7fd), TOBN(0xe3186059, 0x99c83cf2),
+           TOBN(0x9b69440b, 0x72c0b8c7), TOBN(0xa81497d7, 0x7b9e0e4d)}},
+         {{TOBN(0x515d5c89, 0x1f5f82dc), TOBN(0x9a7f67d7, 0x6361079e),
+           TOBN(0xa8da81e3, 0x11a35330), TOBN(0xe44990c4, 0x4b18be1b)},
+          {TOBN(0xc7d5ed95, 0xaf103e59), TOBN(0xece8aba7, 0x8dac9261),
+           TOBN(0xbe82b099, 0x9394b8d3), TOBN(0x6830f09a, 0x16adfe83)}},
+         {{TOBN(0x250a29b4, 0x88172d01), TOBN(0x8b20bd65, 0xcaff9e02),
+           TOBN(0xb8a7661e, 0xe8a6329a), TOBN(0x4520304d, 0xd3fce920)},
+          {TOBN(0xae45da1f, 0x2b47f7ef), TOBN(0xe07f5288, 0x5bffc540),
+           TOBN(0xf7997009, 0x3464f874), TOBN(0x2244c2cd, 0xa6fa1f38)}},
+         {{TOBN(0x43c41ac1, 0x94d7d9b1), TOBN(0x5bafdd82, 0xc82e7f17),
+           TOBN(0xdf0614c1, 0x5fda0fca), TOBN(0x74b043a7, 0xa8ae37ad)},
+          {TOBN(0x3ba6afa1, 0x9e71734c), TOBN(0x15d5437e, 0x9c450f2e),
+           TOBN(0x4a5883fe, 0x67e242b1), TOBN(0x5143bdc2, 0x2c1953c2)}},
+         {{TOBN(0x542b8b53, 0xfc5e8920), TOBN(0x363bf9a8, 0x9a9cee08),
+           TOBN(0x02375f10, 0xc3486e08), TOBN(0x2037543b, 0x8c5e70d2)},
+          {TOBN(0x7109bccc, 0x625640b4), TOBN(0xcbc1051e, 0x8bc62c3b),
+           TOBN(0xf8455fed, 0x803f26ea), TOBN(0x6badceab, 0xeb372424)}},
+         {{TOBN(0xa2a9ce7c, 0x6b53f5f9), TOBN(0x64246595, 0x1b176d99),
+           TOBN(0xb1298d36, 0xb95c081b), TOBN(0x53505bb8, 0x1d9a9ee6)},
+          {TOBN(0x3f6f9e61, 0xf2ba70b0), TOBN(0xd07e16c9, 0x8afad453),
+           TOBN(0x9f1694bb, 0xe7eb4a6a), TOBN(0xdfebced9, 0x3cb0bc8e)}},
+         {{TOBN(0x92d3dcdc, 0x53868c8b), TOBN(0x174311a2, 0x386107a6),
+           TOBN(0x4109e07c, 0x689b4e64), TOBN(0x30e4587f, 0x2df3dcb6)},
+          {TOBN(0x841aea31, 0x0811b3b2), TOBN(0x6144d41d, 0x0cce43ea),
+           TOBN(0x464c4581, 0x2a9a7803), TOBN(0xd03d371f, 0x3e158930)}},
+         {{TOBN(0xc676d7f2, 0xb1f3390b), TOBN(0x9f7a1b8c, 0xa5b61272),
+           TOBN(0x4ebebfc9, 0xc2e127a9), TOBN(0x4602500c, 0x5dd997bf)},
+          {TOBN(0x7f09771c, 0x4711230f), TOBN(0x058eb37c, 0x020f09c1),
+           TOBN(0xab693d4b, 0xfee5e38b), TOBN(0x9289eb1f, 0x4653cbc0)}},
+         {{TOBN(0xbecf46ab, 0xd51b9cf5), TOBN(0xd2aa9c02, 0x9f0121af),
+           TOBN(0x36aaf7d2, 0xe90dc274), TOBN(0x909e4ea0, 0x48b95a3c)},
+          {TOBN(0xe6b70496, 0x6f32dbdb), TOBN(0x672188a0, 0x8b030b3e),
+           TOBN(0xeeffe5b3, 0xcfb617e2), TOBN(0x87e947de, 0x7c82709e)}},
+         {{TOBN(0xa44d2b39, 0x1770f5a7), TOBN(0xe4d4d791, 0x0e44eb82),
+           TOBN(0x42e69d1e, 0x3f69712a), TOBN(0xbf11c4d6, 0xac6a820e)},
+          {TOBN(0xb5e7f3e5, 0x42c4224c), TOBN(0xd6b4e81c, 0x449d941c),
+           TOBN(0x5d72bd16, 0x5450e878), TOBN(0x6a61e28a, 0xee25ac54)}},
+         {{TOBN(0x33272094, 0xe6f1cd95), TOBN(0x7512f30d, 0x0d18673f),
+           TOBN(0x32f7a4ca, 0x5afc1464), TOBN(0x2f095656, 0x6bbb977b)},
+          {TOBN(0x586f47ca, 0xa8226200), TOBN(0x02c868ad, 0x1ac07369),
+           TOBN(0x4ef2b845, 0xc613acbe), TOBN(0x43d7563e, 0x0386054c)}},
+         {{TOBN(0x54da9dc7, 0xab952578), TOBN(0xb5423df2, 0x26e84d0b),
+           TOBN(0xa8b64eeb, 0x9b872042), TOBN(0xac205782, 0x5990f6df)},
+          {TOBN(0x4ff696eb, 0x21f4c77a), TOBN(0x1a79c3e4, 0xaab273af),
+           TOBN(0x29bc922e, 0x9436b3f1), TOBN(0xff807ef8, 0xd6d9a27a)}},
+         {{TOBN(0x82acea3d, 0x778f22a0), TOBN(0xfb10b2e8, 0x5b5e7469),
+           TOBN(0xc0b16980, 0x2818ee7d), TOBN(0x011afff4, 0xc91c1a2f)},
+          {TOBN(0x95a6d126, 0xad124418), TOBN(0x31c081a5, 0xe72e295f),
+           TOBN(0x36bb283a, 0xf2f4db75), TOBN(0xd115540f, 0x7acef462)}},
+         {{TOBN(0xc7f3a8f8, 0x33f6746c), TOBN(0x21e46f65, 0xfea990ca),
+           TOBN(0x915fd5c5, 0xcaddb0a9), TOBN(0xbd41f016, 0x78614555)},
+          {TOBN(0x346f4434, 0x426ffb58), TOBN(0x80559436, 0x14dbc204),
+           TOBN(0xf3dd20fe, 0x5a969b7f), TOBN(0x9d59e956, 0xe899a39a)}},
+         {{TOBN(0xf1b0971c, 0x8ad4cf4b), TOBN(0x03448860, 0x2ffb8fb8),
+           TOBN(0xf071ac3c, 0x65340ba4), TOBN(0x408d0596, 0xb27fd758)},
+          {TOBN(0xe7c78ea4, 0x98c364b0), TOBN(0xa4aac4a5, 0x051e8ab5),
+           TOBN(0xb9e1d560, 0x485d9002), TOBN(0x9acd518a, 0x88844455)}},
+         {{TOBN(0xe4ca688f, 0xd06f56c0), TOBN(0xa48af70d, 0xdf027972),
+           TOBN(0x691f0f04, 0x5e9a609d), TOBN(0xa9dd82cd, 0xee61270e)},
+          {TOBN(0x8903ca63, 0xa0ef18d3), TOBN(0x9fb7ee35, 0x3d6ca3bd),
+           TOBN(0xa7b4a09c, 0xabf47d03), TOBN(0x4cdada01, 0x1c67de8e)}},
+         {{TOBN(0x52003749, 0x9355a244), TOBN(0xe77fd2b6, 0x4f2151a9),
+           TOBN(0x695d6cf6, 0x66b4efcb), TOBN(0xc5a0cacf, 0xda2cfe25)},
+          {TOBN(0x104efe5c, 0xef811865), TOBN(0xf52813e8, 0x9ea5cc3d),
+           TOBN(0x855683dc, 0x40b58dbc), TOBN(0x0338ecde, 0x175fcb11)}},
+         {{TOBN(0xf9a05637, 0x74921592), TOBN(0xb4f1261d, 0xb9bb9d31),
+           TOBN(0x551429b7, 0x4e9c5459), TOBN(0xbe182e6f, 0x6ea71f53)},
+          {TOBN(0xd3a3b07c, 0xdfc50573), TOBN(0x9ba1afda, 0x62be8d44),
+           TOBN(0x9bcfd2cb, 0x52ab65d3), TOBN(0xdf11d547, 0xa9571802)}},
+         {{TOBN(0x099403ee, 0x02a2404a), TOBN(0x497406f4, 0x21088a71),
+           TOBN(0x99479409, 0x5004ae71), TOBN(0xbdb42078, 0xa812c362)},
+          {TOBN(0x2b72a30f, 0xd8828442), TOBN(0x283add27, 0xfcb5ed1c),
+           TOBN(0xf7c0e200, 0x66a40015), TOBN(0x3e3be641, 0x08b295ef)}},
+         {{TOBN(0xac127dc1, 0xe038a675), TOBN(0x729deff3, 0x8c5c6320),
+           TOBN(0xb7df8fd4, 0xa90d2c53), TOBN(0x9b74b0ec, 0x681e7cd3)},
+          {TOBN(0x5cb5a623, 0xdab407e5), TOBN(0xcdbd3615, 0x76b340c6),
+           TOBN(0xa184415a, 0x7d28392c), TOBN(0xc184c1d8, 0xe96f7830)}},
+         {{TOBN(0xc3204f19, 0x81d3a80f), TOBN(0xfde0c841, 0xc8e02432),
+           TOBN(0x78203b3e, 0x8149e0c1), TOBN(0x5904bdbb, 0x08053a73)},
+          {TOBN(0x30fc1dd1, 0x101b6805), TOBN(0x43c223bc, 0x49aa6d49),
+           TOBN(0x9ed67141, 0x7a174087), TOBN(0x311469a0, 0xd5997008)}},
+         {{TOBN(0xb189b684, 0x5e43fc61), TOBN(0xf3282375, 0xe0d3ab57),
+           TOBN(0x4fa34b67, 0xb1181da8), TOBN(0x621ed0b2, 0x99ee52b8)},
+          {TOBN(0x9b178de1, 0xad990676), TOBN(0xd51de67b, 0x56d54065),
+           TOBN(0x2a2c27c4, 0x7538c201), TOBN(0x33856ec8, 0x38a40f5c)}},
+         {{TOBN(0x2522fc15, 0xbe6cdcde), TOBN(0x1e603f33, 0x9f0c6f89),
+           TOBN(0x7994edc3, 0x103e30a6), TOBN(0x033a00db, 0x220c853e)},
+          {TOBN(0xd3cfa409, 0xf7bb7fd7), TOBN(0x70f8781e, 0x462d18f6),
+           TOBN(0xbbd82980, 0x687fe295), TOBN(0x6eef4c32, 0x595669f3)}},
+         {{TOBN(0x86a9303b, 0x2f7e85c3), TOBN(0x5fce4621, 0x71988f9b),
+           TOBN(0x5b935bf6, 0xc138acb5), TOBN(0x30ea7d67, 0x25661212)},
+          {TOBN(0xef1eb5f4, 0xe51ab9a2), TOBN(0x0587c98a, 0xae067c78),
+           TOBN(0xb3ce1b3c, 0x77ca9ca6), TOBN(0x2a553d4d, 0x54b5f057)}},
+         {{TOBN(0xc7898236, 0x4da29ec2), TOBN(0xdbdd5d13, 0xb9c57316),
+           TOBN(0xc57d6e6b, 0x2cd80d47), TOBN(0x80b460cf, 0xfe9e7391)},
+          {TOBN(0x98648cab, 0xf963c31e), TOBN(0x67f9f633, 0xcc4d32fd),
+           TOBN(0x0af42a9d, 0xfdf7c687), TOBN(0x55f292a3, 0x0b015ea7)}},
+         {{TOBN(0x89e468b2, 0xcd21ab3d), TOBN(0xe504f022, 0xc393d392),
+           TOBN(0xab21e1d4, 0xa5013af9), TOBN(0xe3283f78, 0xc2c28acb)},
+          {TOBN(0xf38b35f6, 0x226bf99f), TOBN(0xe8354274, 0x0e291e69),
+           TOBN(0x61673a15, 0xb20c162d), TOBN(0xc101dc75, 0xb04fbdbe)}},
+         {{TOBN(0x8323b4c2, 0x255bd617), TOBN(0x6c969693, 0x6c2a9154),
+           TOBN(0xc6e65860, 0x62679387), TOBN(0x8e01db0c, 0xb8c88e23)},
+          {TOBN(0x33c42873, 0x893a5559), TOBN(0x7630f04b, 0x47a3e149),
+           TOBN(0xb5d80805, 0xddcf35f8), TOBN(0x582ca080, 0x77dfe732)}},
+         {{TOBN(0x2c7156e1, 0x0b1894a0), TOBN(0x92034001, 0xd81c68c0),
+           TOBN(0xed225d00, 0xc8b115b5), TOBN(0x237f9c22, 0x83b907f2)},
+          {TOBN(0x0ea2f32f, 0x4470e2c0), TOBN(0xb725f7c1, 0x58be4e95),
+           TOBN(0x0f1dcafa, 0xb1ae5463), TOBN(0x59ed5187, 0x1ba2fc04)}},
+         {{TOBN(0xf6e0f316, 0xd0115d4d), TOBN(0x5180b12f, 0xd3691599),
+           TOBN(0x157e32c9, 0x527f0a41), TOBN(0x7b0b081d, 0xa8e0ecc0)},
+          {TOBN(0x6dbaaa8a, 0xbf4f0dd0), TOBN(0x99b289c7, 0x4d252696),
+           TOBN(0x79b7755e, 0xdbf864fe), TOBN(0x6974e2b1, 0x76cad3ab)}},
+         {{TOBN(0x35dbbee2, 0x06ddd657), TOBN(0xe7cbdd11, 0x2ff3a96d),
+           TOBN(0x88381968, 0x076be758), TOBN(0x2d737e72, 0x08c91f5d)},
+          {TOBN(0x5f83ab62, 0x86ec3776), TOBN(0x98aa649d, 0x945fa7a1),
+           TOBN(0xf477ec37, 0x72ef0933), TOBN(0x66f52b1e, 0x098c17b1)}},
+         {{TOBN(0x9eec58fb, 0xd803738b), TOBN(0x91aaade7, 0xe4e86aa4),
+           TOBN(0x6b1ae617, 0xa5b51492), TOBN(0x63272121, 0xbbc45974)},
+          {TOBN(0x7e0e28f0, 0x862c5129), TOBN(0x0a8f79a9, 0x3321a4a0),
+           TOBN(0xe26d1664, 0x5041c88f), TOBN(0x0571b805, 0x53233e3a)}},
+         {{TOBN(0xd1b0ccde, 0xc9520711), TOBN(0x55a9e4ed, 0x3c8b84bf),
+           TOBN(0x9426bd39, 0xa1fef314), TOBN(0x4f5f638e, 0x6eb93f2b)},
+          {TOBN(0xba2a1ed3, 0x2bf9341b), TOBN(0xd63c1321, 0x4d42d5a9),
+           TOBN(0xd2964a89, 0x316dc7c5), TOBN(0xd1759606, 0xca511851)}},
+         {{TOBN(0xd8a9201f, 0xf9e6ed35), TOBN(0xb7b5ee45, 0x6736925a),
+           TOBN(0x0a83fbbc, 0x99581af7), TOBN(0x3076bc40, 0x64eeb051)},
+          {TOBN(0x5511c98c, 0x02dec312), TOBN(0x270de898, 0x238dcb78),
+           TOBN(0x2cf4cf9c, 0x539c08c9), TOBN(0xa70cb65e, 0x38d3b06e)}},
+         {{TOBN(0xb12ec10e, 0xcfe57bbd), TOBN(0x82c7b656, 0x35a0c2b5),
+           TOBN(0xddc7d5cd, 0x161c67bd), TOBN(0xe32e8985, 0xae3a32cc)},
+          {TOBN(0x7aba9444, 0xd11a5529), TOBN(0xe964ed02, 0x2427fa1a),
+           TOBN(0x1528392d, 0x24a1770a), TOBN(0xa152ce2c, 0x12c72fcd)}},
+         {{TOBN(0x714553a4, 0x8ec07649), TOBN(0x18b4c290, 0x459dd453),
+           TOBN(0xea32b714, 0x7b64b110), TOBN(0xb871bfa5, 0x2e6f07a2)},
+          {TOBN(0xb67112e5, 0x9e2e3c9b), TOBN(0xfbf250e5, 0x44aa90f6),
+           TOBN(0xf77aedb8, 0xbd539006), TOBN(0x3b0cdf9a, 0xd172a66f)}},
+         {{TOBN(0xedf69fea, 0xf8c51187), TOBN(0x05bb67ec, 0x741e4da7),
+           TOBN(0x47df0f32, 0x08114345), TOBN(0x56facb07, 0xbb9792b1)},
+          {TOBN(0xf3e007e9, 0x8f6229e4), TOBN(0x62d103f4, 0x526fba0f),
+           TOBN(0x4f33bef7, 0xb0339d79), TOBN(0x9841357b, 0xb59bfec1)}},
+         {{TOBN(0xfa8dbb59, 0xc34e6705), TOBN(0xc3c7180b, 0x7fdaa84c),
+           TOBN(0xf95872fc, 0xa4108537), TOBN(0x8750cc3b, 0x932a3e5a)},
+          {TOBN(0xb61cc69d, 0xb7275d7d), TOBN(0xffa0168b, 0x2e59b2e9),
+           TOBN(0xca032abc, 0x6ecbb493), TOBN(0x1d86dbd3, 0x2c9082d8)}},
+         {{TOBN(0xae1e0b67, 0xe28ef5ba), TOBN(0x2c9a4699, 0xcb18e169),
+           TOBN(0x0ecd0e33, 0x1e6bbd20), TOBN(0x571b360e, 0xaf5e81d2)},
+          {TOBN(0xcd9fea58, 0x101c1d45), TOBN(0x6651788e, 0x18880452),
+           TOBN(0xa9972635, 0x1f8dd446), TOBN(0x44bed022, 0xe37281d0)}},
+         {{TOBN(0x094b2b2d, 0x33da525d), TOBN(0xf193678e, 0x13144fd8),
+           TOBN(0xb8ab5ba4, 0xf4c1061d), TOBN(0x4343b5fa, 0xdccbe0f4)},
+          {TOBN(0xa8702371, 0x63812713), TOBN(0x47bf6d2d, 0xf7611d93),
+           TOBN(0x46729b8c, 0xbd21e1d7), TOBN(0x7484d4e0, 0xd629e77d)}},
+         {{TOBN(0x830e6eea, 0x60dbac1f), TOBN(0x23d8c484, 0xda06a2f7),
+           TOBN(0x896714b0, 0x50ca535b), TOBN(0xdc8d3644, 0xebd97a9b)},
+          {TOBN(0x106ef9fa, 0xb12177b4), TOBN(0xf79bf464, 0x534d5d9c),
+           TOBN(0x2537a349, 0xa6ab360b), TOBN(0xc7c54253, 0xa00c744f)}},
+         {{TOBN(0xb3c7a047, 0xe5911a76), TOBN(0x61ffa5c8, 0x647f1ee7),
+           TOBN(0x15aed36f, 0x8f56ab42), TOBN(0x6a0d41b0, 0xa3ff9ac9)},
+          {TOBN(0x68f469f5, 0xcc30d357), TOBN(0xbe9adf81, 0x6b72be96),
+           TOBN(0x1cd926fe, 0x903ad461), TOBN(0x7e89e38f, 0xcaca441b)}},
+         {{TOBN(0xf0f82de5, 0xfacf69d4), TOBN(0x363b7e76, 0x4775344c),
+           TOBN(0x6894f312, 0xb2e36d04), TOBN(0x3c6cb4fe, 0x11d1c9a5)},
+          {TOBN(0x85d9c339, 0x4008e1f2), TOBN(0x5e9a85ea, 0x249f326c),
+           TOBN(0xdc35c60a, 0x678c5e06), TOBN(0xc08b944f, 0x9f86fba9)}},
+         {{TOBN(0xde40c02c, 0x89f71f0f), TOBN(0xad8f3e31, 0xff3da3c0),
+           TOBN(0x3ea5096b, 0x42125ded), TOBN(0x13879cbf, 0xa7379183)},
+          {TOBN(0x6f4714a5, 0x6b306a0b), TOBN(0x359c2ea6, 0x67646c5e),
+           TOBN(0xfacf8943, 0x07726368), TOBN(0x07a58935, 0x65ff431e)}},
+         {{TOBN(0x24d661d1, 0x68754ab0), TOBN(0x801fce1d, 0x6f429a76),
+           TOBN(0xc068a85f, 0xa58ce769), TOBN(0xedc35c54, 0x5d5eca2b)},
+          {TOBN(0xea31276f, 0xa3f660d1), TOBN(0xa0184ebe, 0xb8fc7167),
+           TOBN(0x0f20f21a, 0x1d8db0ae), TOBN(0xd96d095f, 0x56c35e12)}},
+         {{TOBN(0xedf402b5, 0xf8c2a25b), TOBN(0x1bb772b9, 0x059204b6),
+           TOBN(0x50cbeae2, 0x19b4e34c), TOBN(0x93109d80, 0x3fa0845a)},
+          {TOBN(0x54f7ccf7, 0x8ef59fb5), TOBN(0x3b438fe2, 0x88070963),
+           TOBN(0x9e28c659, 0x31f3ba9b), TOBN(0x9cc31b46, 0xead9da92)}},
+         {{TOBN(0x3c2f0ba9, 0xb733aa5f), TOBN(0xdece47cb, 0xf05af235),
+           TOBN(0xf8e3f715, 0xa2ac82a5), TOBN(0xc97ba641, 0x2203f18a)},
+          {TOBN(0xc3af5504, 0x09c11060), TOBN(0x56ea2c05, 0x46af512d),
+           TOBN(0xfac28daf, 0xf3f28146), TOBN(0x87fab43a, 0x959ef494)}}},
+        {{{TOBN(0x09891641, 0xd4c5105f), TOBN(0x1ae80f8e, 0x6d7fbd65),
+           TOBN(0x9d67225f, 0xbee6bdb0), TOBN(0x3b433b59, 0x7fc4d860)},
+          {TOBN(0x44e66db6, 0x93e85638), TOBN(0xf7b59252, 0xe3e9862f),
+           TOBN(0xdb785157, 0x665c32ec), TOBN(0x702fefd7, 0xae362f50)}},
+         {{TOBN(0x3754475d, 0x0fefb0c3), TOBN(0xd48fb56b, 0x46d7c35d),
+           TOBN(0xa070b633, 0x363798a4), TOBN(0xae89f3d2, 0x8fdb98e6)},
+          {TOBN(0x970b89c8, 0x6363d14c), TOBN(0x89817521, 0x67abd27d),
+           TOBN(0x9bf7d474, 0x44d5a021), TOBN(0xb3083baf, 0xcac72aee)}},
+         {{TOBN(0x389741de, 0xbe949a44), TOBN(0x638e9388, 0x546a4fa5),
+           TOBN(0x3fe6419c, 0xa0047bdc), TOBN(0x7047f648, 0xaaea57ca)},
+          {TOBN(0x54e48a90, 0x41fbab17), TOBN(0xda8e0b28, 0x576bdba2),
+           TOBN(0xe807eebc, 0xc72afddc), TOBN(0x07d3336d, 0xf42577bf)}},
+         {{TOBN(0x62a8c244, 0xbfe20925), TOBN(0x91c19ac3, 0x8fdce867),
+           TOBN(0x5a96a5d5, 0xdd387063), TOBN(0x61d587d4, 0x21d324f6)},
+          {TOBN(0xe87673a2, 0xa37173ea), TOBN(0x23848008, 0x53778b65),
+           TOBN(0x10f8441e, 0x05bab43e), TOBN(0xfa11fe12, 0x4621efbe)}},
+         {{TOBN(0x047b772e, 0x81685d7b), TOBN(0x23f27d81, 0xbf34a976),
+           TOBN(0xc27608e2, 0x915f48ef), TOBN(0x3b0b43fa, 0xa521d5c3)},
+          {TOBN(0x7613fb26, 0x63ca7284), TOBN(0x7f5729b4, 0x1d4db837),
+           TOBN(0x87b14898, 0x583b526b), TOBN(0x00b732a6, 0xbbadd3d1)}},
+         {{TOBN(0x8e02f426, 0x2048e396), TOBN(0x436b50b6, 0x383d9de4),
+           TOBN(0xf78d3481, 0x471e85ad), TOBN(0x8b01ea6a, 0xd005c8d6)},
+          {TOBN(0xd3c7afee, 0x97015c07), TOBN(0x46cdf1a9, 0x4e3ba2ae),
+           TOBN(0x7a42e501, 0x83d3a1d2), TOBN(0xd54b5268, 0xb541dff4)}},
+         {{TOBN(0x3f24cf30, 0x4e23e9bc), TOBN(0x4387f816, 0x126e3624),
+           TOBN(0x26a46a03, 0x3b0b6d61), TOBN(0xaf1bc845, 0x8b2d777c)},
+          {TOBN(0x25c401ba, 0x527de79c), TOBN(0x0e1346d4, 0x4261bbb6),
+           TOBN(0x4b96c44b, 0x287b4bc7), TOBN(0x658493c7, 0x5254562f)}},
+         {{TOBN(0x23f949fe, 0xb8a24a20), TOBN(0x17ebfed1, 0xf52ca53f),
+           TOBN(0x9b691bbe, 0xbcfb4853), TOBN(0x5617ff6b, 0x6278a05d)},
+          {TOBN(0x241b34c5, 0xe3c99ebd), TOBN(0xfc64242e, 0x1784156a),
+           TOBN(0x4206482f, 0x695d67df), TOBN(0xb967ce0e, 0xee27c011)}},
+         {{TOBN(0x65db3751, 0x21c80b5d), TOBN(0x2e7a563c, 0xa31ecca0),
+           TOBN(0xe56ffc4e, 0x5238a07e), TOBN(0x3d6c2966, 0x32ced854)},
+          {TOBN(0xe99d7d1a, 0xaf70b885), TOBN(0xafc3bad9, 0x2d686459),
+           TOBN(0x9c78bf46, 0x0cc8ba5b), TOBN(0x5a439519, 0x18955aa3)}},
+         {{TOBN(0xf8b517a8, 0x5fe4e314), TOBN(0xe60234d0, 0xfcb8906f),
+           TOBN(0xffe542ac, 0xf2061b23), TOBN(0x287e191f, 0x6b4cb59c)},
+          {TOBN(0x21857ddc, 0x09d877d8), TOBN(0x1c23478c, 0x14678941),
+           TOBN(0xbbf0c056, 0xb6e05ea4), TOBN(0x82da4b53, 0xb01594fe)}},
+         {{TOBN(0xf7526791, 0xfadb8608), TOBN(0x049e832d, 0x7b74cdf6),
+           TOBN(0xa43581cc, 0xc2b90a34), TOBN(0x73639eb8, 0x9360b10c)},
+          {TOBN(0x4fba331f, 0xe1e4a71b), TOBN(0x6ffd6b93, 0x8072f919),
+           TOBN(0x6e53271c, 0x65679032), TOBN(0x67206444, 0xf14272ce)}},
+         {{TOBN(0xc0f734a3, 0xb2335834), TOBN(0x9526205a, 0x90ef6860),
+           TOBN(0xcb8be717, 0x04e2bb0d), TOBN(0x2418871e, 0x02f383fa)},
+          {TOBN(0xd7177681, 0x4082c157), TOBN(0xcc914ad0, 0x29c20073),
+           TOBN(0xf186c1eb, 0xe587e728), TOBN(0x6fdb3c22, 0x61bcd5fd)}},
+         {{TOBN(0x30d014a6, 0xf2f9f8e9), TOBN(0x963ece23, 0x4fec49d2),
+           TOBN(0x862025c5, 0x9605a8d9), TOBN(0x39874445, 0x19f8929a)},
+          {TOBN(0x01b6ff65, 0x12bf476a), TOBN(0x598a64d8, 0x09cf7d91),
+           TOBN(0xd7ec7749, 0x93be56ca), TOBN(0x10899785, 0xcbb33615)}},
+         {{TOBN(0xb8a092fd, 0x02eee3ad), TOBN(0xa86b3d35, 0x30145270),
+           TOBN(0x323d98c6, 0x8512b675), TOBN(0x4b8bc785, 0x62ebb40f)},
+          {TOBN(0x7d301f54, 0x413f9cde), TOBN(0xa5e4fb4f, 0x2bab5664),
+           TOBN(0x1d2b252d, 0x1cbfec23), TOBN(0xfcd576bb, 0xe177120d)}},
+         {{TOBN(0x04427d3e, 0x83731a34), TOBN(0x2bb9028e, 0xed836e8e),
+           TOBN(0xb36acff8, 0xb612ca7c), TOBN(0xb88fe5ef, 0xd3d9c73a)},
+          {TOBN(0xbe2a6bc6, 0xedea4eb3), TOBN(0x43b93133, 0x488eec77),
+           TOBN(0xf41ff566, 0xb17106e1), TOBN(0x469e9172, 0x654efa32)}},
+         {{TOBN(0xb4480f04, 0x41c23fa3), TOBN(0xb4712eb0, 0xc1989a2e),
+           TOBN(0x3ccbba0f, 0x93a29ca7), TOBN(0x6e205c14, 0xd619428c)},
+          {TOBN(0x90db7957, 0xb3641686), TOBN(0x0432691d, 0x45ac8b4e),
+           TOBN(0x07a759ac, 0xf64e0350), TOBN(0x0514d89c, 0x9c972517)}},
+         {{TOBN(0x1701147f, 0xa8e67fc3), TOBN(0x9e2e0b8b, 0xab2085be),
+           TOBN(0xd5651824, 0xac284e57), TOBN(0x890d4325, 0x74893664)},
+          {TOBN(0x8a7c5e6e, 0xc55e68a3), TOBN(0xbf12e90b, 0x4339c85a),
+           TOBN(0x31846b85, 0xf922b655), TOBN(0x9a54ce4d, 0x0bf4d700)}},
+         {{TOBN(0xd7f4e83a, 0xf1a14295), TOBN(0x916f955c, 0xb285d4f9),
+           TOBN(0xe57bb0e0, 0x99ffdaba), TOBN(0x28a43034, 0xeab0d152)},
+          {TOBN(0x0a36ffa2, 0xb8a9cef8), TOBN(0x5517407e, 0xb9ec051a),
+           TOBN(0x9c796096, 0xea68e672), TOBN(0x853db5fb, 0xfb3c77fb)}},
+         {{TOBN(0x21474ba9, 0xe864a51a), TOBN(0x6c267699, 0x6e8a1b8b),
+           TOBN(0x7c823626, 0x94120a28), TOBN(0xe61e9a48, 0x8383a5db)},
+          {TOBN(0x7dd75003, 0x9f84216d), TOBN(0xab020d07, 0xad43cd85),
+           TOBN(0x9437ae48, 0xda12c659), TOBN(0x6449c2eb, 0xe65452ad)}},
+         {{TOBN(0xcc7c4c1c, 0x2cf9d7c1), TOBN(0x1320886a, 0xee95e5ab),
+           TOBN(0xbb7b9056, 0xbeae170c), TOBN(0xc8a5b250, 0xdbc0d662)},
+          {TOBN(0x4ed81432, 0xc11d2303), TOBN(0x7da66912, 0x1f03769f),
+           TOBN(0x3ac7a5fd, 0x84539828), TOBN(0x14dada94, 0x3bccdd02)}},
+         {{TOBN(0x8b84c321, 0x7ef6b0d1), TOBN(0x52a9477a, 0x7c933f22),
+           TOBN(0x5ef6728a, 0xfd440b82), TOBN(0x5c3bd859, 0x6ce4bd5e)},
+          {TOBN(0x918b80f5, 0xf22c2d3e), TOBN(0x368d5040, 0xb7bb6cc5),
+           TOBN(0xb66142a1, 0x2695a11c), TOBN(0x60ac583a, 0xeb19ea70)}},
+         {{TOBN(0x317cbb98, 0x0eab2437), TOBN(0x8cc08c55, 0x5e2654c8),
+           TOBN(0xfe2d6520, 0xe6d8307f), TOBN(0xe9f147f3, 0x57428993)},
+          {TOBN(0x5f9c7d14, 0xd2fd6cf1), TOBN(0xa3ecd064, 0x2d4fcbb0),
+           TOBN(0xad83fef0, 0x8e7341f7), TOBN(0x643f23a0, 0x3a63115c)}},
+         {{TOBN(0xd38a78ab, 0xe65ab743), TOBN(0xbf7c75b1, 0x35edc89c),
+           TOBN(0x3dd8752e, 0x530df568), TOBN(0xf85c4a76, 0xe308c682)},
+          {TOBN(0x4c9955b2, 0xe68acf37), TOBN(0xa544df3d, 0xab32af85),
+           TOBN(0x4b8ec3f5, 0xa25cf493), TOBN(0x4d8f2764, 0x1a622feb)}},
+         {{TOBN(0x7bb4f7aa, 0xf0dcbc49), TOBN(0x7de551f9, 0x70bbb45b),
+           TOBN(0xcfd0f3e4, 0x9f2ca2e5), TOBN(0xece58709, 0x1f5c76ef)},
+          {TOBN(0x32920edd, 0x167d79ae), TOBN(0x039df8a2, 0xfa7d7ec1),
+           TOBN(0xf46206c0, 0xbb30af91), TOBN(0x1ff5e2f5, 0x22676b59)}},
+         {{TOBN(0x11f4a039, 0x6ea51d66), TOBN(0x506c1445, 0x807d7a26),
+           TOBN(0x60da5705, 0x755a9b24), TOBN(0x8fc8cc32, 0x1f1a319e)},
+          {TOBN(0x83642d4d, 0x9433d67d), TOBN(0x7fa5cb8f, 0x6a7dd296),
+           TOBN(0x576591db, 0x9b7bde07), TOBN(0x13173d25, 0x419716fb)}},
+         {{TOBN(0xea30599d, 0xd5b340ff), TOBN(0xfc6b5297, 0xb0fe76c5),
+           TOBN(0x1c6968c8, 0xab8f5adc), TOBN(0xf723c7f5, 0x901c928d)},
+          {TOBN(0x4203c321, 0x9773d402), TOBN(0xdf7c6aa3, 0x1b51dd47),
+           TOBN(0x3d49e37a, 0x552be23c), TOBN(0x57febee8, 0x0b5a6e87)}},
+         {{TOBN(0xc5ecbee4, 0x7bd8e739), TOBN(0x79d44994, 0xae63bf75),
+           TOBN(0x168bd00f, 0x38fb8923), TOBN(0x75d48ee4, 0xd0533130)},
+          {TOBN(0x554f77aa, 0xdb5cdf33), TOBN(0x3396e896, 0x3c696769),
+           TOBN(0x2fdddbf2, 0xd3fd674e), TOBN(0xbbb8f6ee, 0x99d0e3e5)}},
+         {{TOBN(0x51b90651, 0xcbae2f70), TOBN(0xefc4bc05, 0x93aaa8eb),
+           TOBN(0x8ecd8689, 0xdd1df499), TOBN(0x1aee99a8, 0x22f367a5)},
+          {TOBN(0x95d485b9, 0xae8274c5), TOBN(0x6c14d445, 0x7d30b39c),
+           TOBN(0xbafea90b, 0xbcc1ef81), TOBN(0x7c5f317a, 0xa459a2ed)}},
+         {{TOBN(0x01211075, 0x4ef44227), TOBN(0xa17bed6e, 0xdc20f496),
+           TOBN(0x0cdfe424, 0x819853cd), TOBN(0x13793298, 0xf71e2ce7)},
+          {TOBN(0x3c1f3078, 0xdbbe307b), TOBN(0x6dd1c20e, 0x76ee9936),
+           TOBN(0x23ee4b57, 0x423caa20), TOBN(0x4ac3793b, 0x8efb840e)}},
+         {{TOBN(0x934438eb, 0xed1f8ca0), TOBN(0x3e546658, 0x4ebb25a2),
+           TOBN(0xc415af0e, 0xc069896f), TOBN(0xc13eddb0, 0x9a5aa43d)},
+          {TOBN(0x7a04204f, 0xd49eb8f6), TOBN(0xd0d5bdfc, 0xd74f1670),
+           TOBN(0x3697e286, 0x56fc0558), TOBN(0x10207371, 0x01cebade)}},
+         {{TOBN(0x5f87e690, 0x0647a82b), TOBN(0x908e0ed4, 0x8f40054f),
+           TOBN(0xa9f633d4, 0x79853803), TOBN(0x8ed13c9a, 0x4a28b252)},
+          {TOBN(0x3e2ef676, 0x1f460f64), TOBN(0x53930b9b, 0x36d06336),
+           TOBN(0x347073ac, 0x8fc4979b), TOBN(0x84380e0e, 0x5ecd5597)}},
+         {{TOBN(0xe3b22c6b, 0xc4fe3c39), TOBN(0xba4a8153, 0x6c7bebdf),
+           TOBN(0xf23ab6b7, 0x25693459), TOBN(0x53bc3770, 0x14922b11)},
+          {TOBN(0x4645c8ab, 0x5afc60db), TOBN(0xaa022355, 0x20b9f2a3),
+           TOBN(0x52a2954c, 0xce0fc507), TOBN(0x8c2731bb, 0x7ce1c2e7)}},
+         {{TOBN(0xf39608ab, 0x18a0339d), TOBN(0xac7a658d, 0x3735436c),
+           TOBN(0xb22c2b07, 0xcd992b4f), TOBN(0x4e83daec, 0xf40dcfd4)},
+          {TOBN(0x8a34c7be, 0x2f39ea3e), TOBN(0xef0c005f, 0xb0a56d2e),
+           TOBN(0x62731f6a, 0x6edd8038), TOBN(0x5721d740, 0x4e3cb075)}},
+         {{TOBN(0x1ea41511, 0xfbeeee1b), TOBN(0xd1ef5e73, 0xef1d0c05),
+           TOBN(0x42feefd1, 0x73c07d35), TOBN(0xe530a00a, 0x8a329493)},
+          {TOBN(0x5d55b7fe, 0xf15ebfb0), TOBN(0x549de03c, 0xd322491a),
+           TOBN(0xf7b5f602, 0x745b3237), TOBN(0x3632a3a2, 0x1ab6e2b6)}},
+         {{TOBN(0x0d3bba89, 0x0ef59f78), TOBN(0x0dfc6443, 0xc9e52b9a),
+           TOBN(0x1dc79699, 0x72631447), TOBN(0xef033917, 0xb3be20b1)},
+          {TOBN(0x0c92735d, 0xb1383948), TOBN(0xc1fc29a2, 0xc0dd7d7d),
+           TOBN(0x6485b697, 0x403ed068), TOBN(0x13bfaab3, 0xaac93bdc)}},
+         {{TOBN(0x410dc6a9, 0x0deeaf52), TOBN(0xb003fb02, 0x4c641c15),
+           TOBN(0x1384978c, 0x5bc504c4), TOBN(0x37640487, 0x864a6a77)},
+          {TOBN(0x05991bc6, 0x222a77da), TOBN(0x62260a57, 0x5e47eb11),
+           TOBN(0xc7af6613, 0xf21b432c), TOBN(0x22f3acc9, 0xab4953e9)}},
+         {{TOBN(0x52934922, 0x8e41d155), TOBN(0x4d024568, 0x3ac059ef),
+           TOBN(0xb0201755, 0x4d884411), TOBN(0xce8055cf, 0xa59a178f)},
+          {TOBN(0xcd77d1af, 0xf6204549), TOBN(0xa0a00a3e, 0xc7066759),
+           TOBN(0x471071ef, 0x0272c229), TOBN(0x009bcf6b, 0xd3c4b6b0)}},
+         {{TOBN(0x2a2638a8, 0x22305177), TOBN(0xd51d59df, 0x41645bbf),
+           TOBN(0xa81142fd, 0xc0a7a3c0), TOBN(0xa17eca6d, 0x4c7063ee)},
+          {TOBN(0x0bb887ed, 0x60d9dcec), TOBN(0xd6d28e51, 0x20ad2455),
+           TOBN(0xebed6308, 0xa67102ba), TOBN(0x042c3114, 0x8bffa408)}},
+         {{TOBN(0xfd099ac5, 0x8aa68e30), TOBN(0x7a6a3d7c, 0x1483513e),
+           TOBN(0xffcc6b75, 0xba2d8f0c), TOBN(0x54dacf96, 0x1e78b954)},
+          {TOBN(0xf645696f, 0xa4a9af89), TOBN(0x3a411940, 0x06ac98ec),
+           TOBN(0x41b8b3f6, 0x22a67a20), TOBN(0x2d0b1e0f, 0x99dec626)}},
+         {{TOBN(0x27c89192, 0x40be34e8), TOBN(0xc7162b37, 0x91907f35),
+           TOBN(0x90188ec1, 0xa956702b), TOBN(0xca132f7d, 0xdf93769c)},
+          {TOBN(0x3ece44f9, 0x0e2025b4), TOBN(0x67aaec69, 0x0c62f14c),
+           TOBN(0xad741418, 0x22e3cc11), TOBN(0xcf9b75c3, 0x7ff9a50e)}},
+         {{TOBN(0x02fa2b16, 0x4d348272), TOBN(0xbd99d61a, 0x9959d56d),
+           TOBN(0xbc4f19db, 0x18762916), TOBN(0xcc7cce50, 0x49c1ac80)},
+          {TOBN(0x4d59ebaa, 0xd846bd83), TOBN(0x8775a9dc, 0xa9202849),
+           TOBN(0x07ec4ae1, 0x6e1f4ca9), TOBN(0x27eb5875, 0xba893f11)}},
+         {{TOBN(0x00284d51, 0x662cc565), TOBN(0x82353a6b, 0x0db4138d),
+           TOBN(0xd9c7aaaa, 0xaa32a594), TOBN(0xf5528b5e, 0xa5669c47)},
+          {TOBN(0xf3220231, 0x2f23c5ff), TOBN(0xe3e8147a, 0x6affa3a1),
+           TOBN(0xfb423d5c, 0x202ddda0), TOBN(0x3d6414ac, 0x6b871bd4)}},
+         {{TOBN(0x586f82e1, 0xa51a168a), TOBN(0xb712c671, 0x48ae5448),
+           TOBN(0x9a2e4bd1, 0x76233eb8), TOBN(0x0188223a, 0x78811ca9)},
+          {TOBN(0x553c5e21, 0xf7c18de1), TOBN(0x7682e451, 0xb27bb286),
+           TOBN(0x3ed036b3, 0x0e51e929), TOBN(0xf487211b, 0xec9cb34f)}},
+         {{TOBN(0x0d094277, 0x0c24efc8), TOBN(0x0349fd04, 0xbef737a4),
+           TOBN(0x6d1c9dd2, 0x514cdd28), TOBN(0x29c135ff, 0x30da9521)},
+          {TOBN(0xea6e4508, 0xf78b0b6f), TOBN(0x176f5dd2, 0x678c143c),
+           TOBN(0x08148418, 0x4be21e65), TOBN(0x27f7525c, 0xe7df38c4)}},
+         {{TOBN(0x1fb70e09, 0x748ab1a4), TOBN(0x9cba50a0, 0x5efe4433),
+           TOBN(0x7846c7a6, 0x15f75af2), TOBN(0x2a7c2c57, 0x5ee73ea8)},
+          {TOBN(0x42e566a4, 0x3f0a449a), TOBN(0x45474c3b, 0xad90fc3d),
+           TOBN(0x7447be3d, 0x8b61d057), TOBN(0x3e9d1cf1, 0x3a4ec092)}},
+         {{TOBN(0x1603e453, 0xf380a6e6), TOBN(0x0b86e431, 0x9b1437c2),
+           TOBN(0x7a4173f2, 0xef29610a), TOBN(0x8fa729a7, 0xf03d57f7)},
+          {TOBN(0x3e186f6e, 0x6c9c217e), TOBN(0xbe1d3079, 0x91919524),
+           TOBN(0x92a62a70, 0x153d4fb1), TOBN(0x32ed3e34, 0xd68c2f71)}},
+         {{TOBN(0xd785027f, 0x9eb1a8b7), TOBN(0xbc37eb77, 0xc5b22fe8),
+           TOBN(0x466b34f0, 0xb9d6a191), TOBN(0x008a89af, 0x9a05f816)},
+          {TOBN(0x19b028fb, 0x7d42c10a), TOBN(0x7fe8c92f, 0x49b3f6b8),
+           TOBN(0x58907cc0, 0xa5a0ade3), TOBN(0xb3154f51, 0x559d1a7c)}},
+         {{TOBN(0x5066efb6, 0xd9790ed6), TOBN(0xa77a0cbc, 0xa6aa793b),
+           TOBN(0x1a915f3c, 0x223e042e), TOBN(0x1c5def04, 0x69c5874b)},
+          {TOBN(0x0e830078, 0x73b6c1da), TOBN(0x55cf85d2, 0xfcd8557a),
+           TOBN(0x0f7c7c76, 0x0460f3b1), TOBN(0x87052acb, 0x46e58063)}},
+         {{TOBN(0x09212b80, 0x907eae66), TOBN(0x3cb068e0, 0x4d721c89),
+           TOBN(0xa87941ae, 0xdd45ac1c), TOBN(0xde8d5c0d, 0x0daa0dbb)},
+          {TOBN(0xda421fdc, 0xe3502e6e), TOBN(0xc8944201, 0x4d89a084),
+           TOBN(0x7307ba5e, 0xf0c24bfb), TOBN(0xda212beb, 0x20bde0ef)}},
+         {{TOBN(0xea2da24b, 0xf82ce682), TOBN(0x058d3816, 0x07f71fe4),
+           TOBN(0x35a02462, 0x5ffad8de), TOBN(0xcd7b05dc, 0xaadcefab)},
+          {TOBN(0xd442f8ed, 0x1d9f54ec), TOBN(0x8be3d618, 0xb2d3b5ca),
+           TOBN(0xe2220ed0, 0xe06b2ce2), TOBN(0x82699a5f, 0x1b0da4c0)}},
+         {{TOBN(0x3ff106f5, 0x71c0c3a7), TOBN(0x8f580f5a, 0x0d34180c),
+           TOBN(0x4ebb120e, 0x22d7d375), TOBN(0x5e5782cc, 0xe9513675)},
+          {TOBN(0x2275580c, 0x99c82a70), TOBN(0xe8359fbf, 0x15ea8c4c),
+           TOBN(0x53b48db8, 0x7b415e70), TOBN(0xaacf2240, 0x100c6014)}},
+         {{TOBN(0x9faaccf5, 0xe4652f1d), TOBN(0xbd6fdd2a, 0xd56157b2),
+           TOBN(0xa4f4fb1f, 0x6261ec50), TOBN(0x244e55ad, 0x476bcd52)},
+          {TOBN(0x881c9305, 0x047d320b), TOBN(0x1ca983d5, 0x6181263f),
+           TOBN(0x354e9a44, 0x278fb8ee), TOBN(0xad2dbc0f, 0x396e4964)}},
+         {{TOBN(0x723f3aa2, 0x9268b3de), TOBN(0x0d1ca29a, 0xe6e0609a),
+           TOBN(0x794866aa, 0x6cf44252), TOBN(0x0b59f3e3, 0x01af87ed)},
+          {TOBN(0xe234e5ff, 0x7f4a6c51), TOBN(0xa8768fd2, 0x61dc2f7e),
+           TOBN(0xdafc7332, 0x0a94d81f), TOBN(0xd7f84282, 0x06938ce1)}},
+         {{TOBN(0xae0b3c0e, 0x0546063e), TOBN(0x7fbadcb2, 0x5d61abc6),
+           TOBN(0xd5d7a2c9, 0x369ac400), TOBN(0xa5978d09, 0xae67d10c)},
+          {TOBN(0x290f211e, 0x4f85eaac), TOBN(0xe61e2ad1, 0xfacac681),
+           TOBN(0xae125225, 0x388384cd), TOBN(0xa7fb68e9, 0xccfde30f)}},
+         {{TOBN(0x7a59b936, 0x3daed4c2), TOBN(0x80a9aa40, 0x2606f789),
+           TOBN(0xb40c1ea5, 0xf6a6d90a), TOBN(0x948364d3, 0x514d5885)},
+          {TOBN(0x062ebc60, 0x70985182), TOBN(0xa6db5b0e, 0x33310895),
+           TOBN(0x64a12175, 0xe329c2f5), TOBN(0xc5f25bd2, 0x90ea237e)}},
+         {{TOBN(0x7915c524, 0x2d0a4c23), TOBN(0xeb5d26e4, 0x6bb3cc52),
+           TOBN(0x369a9116, 0xc09e2c92), TOBN(0x0c527f92, 0xcf182cf8)},
+          {TOBN(0x9e591938, 0x2aede0ac), TOBN(0xb2922208, 0x6cc34939),
+           TOBN(0x3c9d8962, 0x99a34361), TOBN(0x3c81836d, 0xc1905fe6)}},
+         {{TOBN(0x4bfeb57f, 0xa001ec5a), TOBN(0xe993f5bb, 0xa0dc5dba),
+           TOBN(0x47884109, 0x724a1380), TOBN(0x8a0369ab, 0x32fe9a04)},
+          {TOBN(0xea068d60, 0x8c927db8), TOBN(0xbf5f37cf, 0x94655741),
+           TOBN(0x47d402a2, 0x04b6c7ea), TOBN(0x4551c295, 0x6af259cb)}},
+         {{TOBN(0x698b71e7, 0xed77ee8b), TOBN(0xbddf7bd0, 0xf309d5c7),
+           TOBN(0x6201c22c, 0x34e780ca), TOBN(0xab04f7d8, 0x4c295ef4)},
+          {TOBN(0x1c947294, 0x4313a8ce), TOBN(0xe532e4ac, 0x92ca4cfe),
+           TOBN(0x89738f80, 0xd0a7a97a), TOBN(0xec088c88, 0xa580fd5b)}},
+         {{TOBN(0x612b1ecc, 0x42ce9e51), TOBN(0x8f9840fd, 0xb25fdd2a),
+           TOBN(0x3cda78c0, 0x01e7f839), TOBN(0x546b3d3a, 0xece05480)},
+          {TOBN(0x271719a9, 0x80d30916), TOBN(0x45497107, 0x584c20c4),
+           TOBN(0xaf8f9478, 0x5bc78608), TOBN(0x28c7d484, 0x277e2a4c)}},
+         {{TOBN(0xfce01767, 0x88a2ffe4), TOBN(0xdc506a35, 0x28e169a5),
+           TOBN(0x0ea10861, 0x7af9c93a), TOBN(0x1ed24361, 0x03fa0e08)},
+          {TOBN(0x96eaaa92, 0xa3d694e7), TOBN(0xc0f43b4d, 0xef50bc74),
+           TOBN(0xce6aa58c, 0x64114db4), TOBN(0x8218e8ea, 0x7c000fd4)}},
+         {{TOBN(0xac815dfb, 0x185f8844), TOBN(0xcd7e90cb, 0x1557abfb),
+           TOBN(0x23d16655, 0xafbfecdf), TOBN(0x80f3271f, 0x085cac4a)},
+          {TOBN(0x7fc39aa7, 0xd0e62f47), TOBN(0x88d519d1, 0x460a48e5),
+           TOBN(0x59559ac4, 0xd28f101e), TOBN(0x7981d9e9, 0xca9ae816)}},
+         {{TOBN(0x5c38652c, 0x9ac38203), TOBN(0x86eaf87f, 0x57657fe5),
+           TOBN(0x568fc472, 0xe21f5416), TOBN(0x2afff39c, 0xe7e597b5)},
+          {TOBN(0x3adbbb07, 0x256d4eab), TOBN(0x22598692, 0x8285ab89),
+           TOBN(0x35f8112a, 0x041caefe), TOBN(0x95df02e3, 0xa5064c8b)}},
+         {{TOBN(0x4d63356e, 0xc7004bf3), TOBN(0x230a08f4, 0xdb83c7de),
+           TOBN(0xca27b270, 0x8709a7b7), TOBN(0x0d1c4cc4, 0xcb9abd2d)},
+          {TOBN(0x8a0bc66e, 0x7550fee8), TOBN(0x369cd4c7, 0x9cf7247e),
+           TOBN(0x75562e84, 0x92b5b7e7), TOBN(0x8fed0da0, 0x5802af7b)}},
+         {{TOBN(0x6a7091c2, 0xe48fb889), TOBN(0x26882c13, 0x7b8a9d06),
+           TOBN(0xa2498663, 0x1b82a0e2), TOBN(0x844ed736, 0x3518152d)},
+          {TOBN(0x282f476f, 0xd86e27c7), TOBN(0xa04edaca, 0x04afefdc),
+           TOBN(0x8b256ebc, 0x6119e34d), TOBN(0x56a413e9, 0x0787d78b)}}},
+        {{{TOBN(0x82ee061d, 0x5a74be50), TOBN(0xe41781c4, 0xdea16ff5),
+           TOBN(0xe0b0c81e, 0x99bfc8a2), TOBN(0x624f4d69, 0x0b547e2d)},
+          {TOBN(0x3a83545d, 0xbdcc9ae4), TOBN(0x2573dbb6, 0x409b1e8e),
+           TOBN(0x482960c4, 0xa6c93539), TOBN(0xf01059ad, 0x5ae18798)}},
+         {{TOBN(0x715c9f97, 0x3112795f), TOBN(0xe8244437, 0x984e6ee1),
+           TOBN(0x55cb4858, 0xecb66bcd), TOBN(0x7c136735, 0xabaffbee)},
+          {TOBN(0x54661595, 0x5dbec38e), TOBN(0x51c0782c, 0x388ad153),
+           TOBN(0x9ba4c53a, 0xc6e0952f), TOBN(0x27e6782a, 0x1b21dfa8)}},
+         {{TOBN(0x682f903d, 0x4ed2dbc2), TOBN(0x0eba59c8, 0x7c3b2d83),
+           TOBN(0x8e9dc84d, 0x9c7e9335), TOBN(0x5f9b21b0, 0x0eb226d7)},
+          {TOBN(0xe33bd394, 0xaf267bae), TOBN(0xaa86cc25, 0xbe2e15ae),
+           TOBN(0x4f0bf67d, 0x6a8ec500), TOBN(0x5846aa44, 0xf9630658)}},
+         {{TOBN(0xfeb09740, 0xe2c2bf15), TOBN(0x627a2205, 0xa9e99704),
+           TOBN(0xec8d73d0, 0xc2fbc565), TOBN(0x223eed8f, 0xc20c8de8)},
+          {TOBN(0x1ee32583, 0xa8363b49), TOBN(0x1a0b6cb9, 0xc9c2b0a6),
+           TOBN(0x49f7c3d2, 0x90dbc85c), TOBN(0xa8dfbb97, 0x1ef4c1ac)}},
+         {{TOBN(0xafb34d4c, 0x65c7c2ab), TOBN(0x1d4610e7, 0xe2c5ea84),
+           TOBN(0x893f6d1b, 0x973c4ab5), TOBN(0xa3cdd7e9, 0x945ba5c4)},
+          {TOBN(0x60514983, 0x064417ee), TOBN(0x1459b23c, 0xad6bdf2b),
+           TOBN(0x23b2c341, 0x5cf726c3), TOBN(0x3a829635, 0x32d6354a)}},
+         {{TOBN(0x294f901f, 0xab192c18), TOBN(0xec5fcbfe, 0x7030164f),
+           TOBN(0xe2e2fcb7, 0xe2246ba6), TOBN(0x1e7c88b3, 0x221a1a0c)},
+          {TOBN(0x72c7dd93, 0xc92d88c5), TOBN(0x41c2148e, 0x1106fb59),
+           TOBN(0x547dd4f5, 0xa0f60f14), TOBN(0xed9b52b2, 0x63960f31)}},
+         {{TOBN(0x6c8349eb, 0xb0a5b358), TOBN(0xb154c5c2, 0x9e7e2ed6),
+           TOBN(0xcad5eccf, 0xeda462db), TOBN(0xf2d6dbe4, 0x2de66b69)},
+          {TOBN(0x426aedf3, 0x8665e5b2), TOBN(0x488a8513, 0x7b7f5723),
+           TOBN(0x15cc43b3, 0x8bcbb386), TOBN(0x27ad0af3, 0xd791d879)}},
+         {{TOBN(0xc16c236e, 0x846e364f), TOBN(0x7f33527c, 0xdea50ca0),
+           TOBN(0xc4810775, 0x0926b86d), TOBN(0x6c2a3609, 0x0598e70c)},
+          {TOBN(0xa6755e52, 0xf024e924), TOBN(0xe0fa07a4, 0x9db4afca),
+           TOBN(0x15c3ce7d, 0x66831790), TOBN(0x5b4ef350, 0xa6cbb0d6)}},
+         {{TOBN(0x2c4aafc4, 0xb6205969), TOBN(0x42563f02, 0xf6c7854f),
+           TOBN(0x016aced5, 0x1d983b48), TOBN(0xfeb356d8, 0x99949755)},
+          {TOBN(0x8c2a2c81, 0xd1a39bd7), TOBN(0x8f44340f, 0xe6934ae9),
+           TOBN(0x148cf91c, 0x447904da), TOBN(0x7340185f, 0x0f51a926)}},
+         {{TOBN(0x2f8f00fb, 0x7409ab46), TOBN(0x057e78e6, 0x80e289b2),
+           TOBN(0x03e5022c, 0xa888e5d1), TOBN(0x3c87111a, 0x9dede4e2)},
+          {TOBN(0x5b9b0e1c, 0x7809460b), TOBN(0xe751c852, 0x71c9abc7),
+           TOBN(0x8b944e28, 0xc7cc1dc9), TOBN(0x4f201ffa, 0x1d3cfa08)}},
+         {{TOBN(0x02fc905c, 0x3e6721ce), TOBN(0xd52d70da, 0xd0b3674c),
+           TOBN(0x5dc2e5ca, 0x18810da4), TOBN(0xa984b273, 0x5c69dd99)},
+          {TOBN(0x63b92527, 0x84de5ca4), TOBN(0x2f1c9872, 0xc852dec4),
+           TOBN(0x18b03593, 0xc2e3de09), TOBN(0x19d70b01, 0x9813dc2f)}},
+         {{TOBN(0x42806b2d, 0xa6dc1d29), TOBN(0xd3030009, 0xf871e144),
+           TOBN(0xa1feb333, 0xaaf49276), TOBN(0xb5583b9e, 0xc70bc04b)},
+          {TOBN(0x1db0be78, 0x95695f20), TOBN(0xfc841811, 0x89d012b5),
+           TOBN(0x6409f272, 0x05f61643), TOBN(0x40d34174, 0xd5883128)}},
+         {{TOBN(0xd79196f5, 0x67419833), TOBN(0x6059e252, 0x863b7b08),
+           TOBN(0x84da1817, 0x1c56700c), TOBN(0x5758ee56, 0xb28d3ec4)},
+          {TOBN(0x7da2771d, 0x013b0ea6), TOBN(0xfddf524b, 0x54c5e9b9),
+           TOBN(0x7df4faf8, 0x24305d80), TOBN(0x58f5c1bf, 0x3a97763f)}},
+         {{TOBN(0xa5af37f1, 0x7c696042), TOBN(0xd4cba22c, 0x4a2538de),
+           TOBN(0x211cb995, 0x9ea42600), TOBN(0xcd105f41, 0x7b069889)},
+          {TOBN(0xb1e1cf19, 0xddb81e74), TOBN(0x472f2d89, 0x5157b8ca),
+           TOBN(0x086fb008, 0xee9db885), TOBN(0x365cd570, 0x0f26d131)}},
+         {{TOBN(0x284b02bb, 0xa2be7053), TOBN(0xdcbbf7c6, 0x7ab9a6d6),
+           TOBN(0x4425559c, 0x20f7a530), TOBN(0x961f2dfa, 0x188767c8)},
+          {TOBN(0xe2fd9435, 0x70dc80c4), TOBN(0x104d6b63, 0xf0784120),
+           TOBN(0x7f592bc1, 0x53567122), TOBN(0xf6bc1246, 0xf688ad77)}},
+         {{TOBN(0x05214c05, 0x0f15dde9), TOBN(0xa47a76a8, 0x0d5f2b82),
+           TOBN(0xbb254d30, 0x62e82b62), TOBN(0x11a05fe0, 0x3ec955ee)},
+          {TOBN(0x7eaff46e, 0x9d529b36), TOBN(0x55ab1301, 0x8f9e3df6),
+           TOBN(0xc463e371, 0x99317698), TOBN(0xfd251438, 0xccda47ad)}},
+         {{TOBN(0xca9c3547, 0x23d695ea), TOBN(0x48ce626e, 0x16e589b5),
+           TOBN(0x6b5b64c7, 0xb187d086), TOBN(0xd02e1794, 0xb2207948)},
+          {TOBN(0x8b58e98f, 0x7198111d), TOBN(0x90ca6305, 0xdcf9c3cc),
+           TOBN(0x5691fe72, 0xf34089b0), TOBN(0x60941af1, 0xfc7c80ff)}},
+         {{TOBN(0xa09bc0a2, 0x22eb51e5), TOBN(0xc0bb7244, 0xaa9cf09a),
+           TOBN(0x36a8077f, 0x80159f06), TOBN(0x8b5c989e, 0xdddc560e)},
+          {TOBN(0x19d2f316, 0x512e1f43), TOBN(0x02eac554, 0xad08ff62),
+           TOBN(0x012ab84c, 0x07d20b4e), TOBN(0x37d1e115, 0xd6d4e4e1)}},
+         {{TOBN(0xb6443e1a, 0xab7b19a8), TOBN(0xf08d067e, 0xdef8cd45),
+           TOBN(0x63adf3e9, 0x685e03da), TOBN(0xcf15a10e, 0x4792b916)},
+          {TOBN(0xf44bcce5, 0xb738a425), TOBN(0xebe131d5, 0x9636b2fd),
+           TOBN(0x94068841, 0x7850d605), TOBN(0x09684eaa, 0xb40d749d)}},
+         {{TOBN(0x8c3c669c, 0x72ba075b), TOBN(0x89f78b55, 0xba469015),
+           TOBN(0x5706aade, 0x3e9f8ba8), TOBN(0x6d8bd565, 0xb32d7ed7)},
+          {TOBN(0x25f4e63b, 0x805f08d6), TOBN(0x7f48200d, 0xc3bcc1b5),
+           TOBN(0x4e801968, 0xb025d847), TOBN(0x74afac04, 0x87cbe0a8)}},
+         {{TOBN(0x43ed2c2b, 0x7e63d690), TOBN(0xefb6bbf0, 0x0223cdb8),
+           TOBN(0x4fec3cae, 0x2884d3fe), TOBN(0x065ecce6, 0xd75e25a4)},
+          {TOBN(0x6c2294ce, 0x69f79071), TOBN(0x0d9a8e5f, 0x044b8666),
+           TOBN(0x5009f238, 0x17b69d8f), TOBN(0x3c29f8fe, 0xc5dfdaf7)}},
+         {{TOBN(0x9067528f, 0xebae68c4), TOBN(0x5b385632, 0x30c5ba21),
+           TOBN(0x540df119, 0x1fdd1aec), TOBN(0xcf37825b, 0xcfba4c78)},
+          {TOBN(0x77eff980, 0xbeb11454), TOBN(0x40a1a991, 0x60c1b066),
+           TOBN(0xe8018980, 0xf889a1c7), TOBN(0xb9c52ae9, 0x76c24be0)}},
+         {{TOBN(0x05fbbcce, 0x45650ef4), TOBN(0xae000f10, 0x8aa29ac7),
+           TOBN(0x884b7172, 0x4f04c470), TOBN(0x7cd4fde2, 0x19bb5c25)},
+          {TOBN(0x6477b22a, 0xe8840869), TOBN(0xa8868859, 0x5fbd0686),
+           TOBN(0xf23cc02e, 0x1116dfba), TOBN(0x76cd563f, 0xd87d7776)}},
+         {{TOBN(0xe2a37598, 0xa9d82abf), TOBN(0x5f188ccb, 0xe6c170f5),
+           TOBN(0x81682200, 0x5066b087), TOBN(0xda22c212, 0xc7155ada)},
+          {TOBN(0x151e5d3a, 0xfbddb479), TOBN(0x4b606b84, 0x6d715b99),
+           TOBN(0x4a73b54b, 0xf997cb2e), TOBN(0x9a1bfe43, 0x3ecd8b66)}},
+         {{TOBN(0x1c312809, 0x2a67d48a), TOBN(0xcd6a671e, 0x031fa9e2),
+           TOBN(0xbec3312a, 0x0e43a34a), TOBN(0x1d935639, 0x55ef47d3)},
+          {TOBN(0x5ea02489, 0x8fea73ea), TOBN(0x8247b364, 0xa035afb2),
+           TOBN(0xb58300a6, 0x5265b54c), TOBN(0x3286662f, 0x722c7148)}},
+         {{TOBN(0xb77fd76b, 0xb4ec4c20), TOBN(0xf0a12fa7, 0x0f3fe3fd),
+           TOBN(0xf845bbf5, 0x41d8c7e8), TOBN(0xe4d969ca, 0x5ec10aa8)},
+          {TOBN(0x4c0053b7, 0x43e232a3), TOBN(0xdc7a3fac, 0x37f8a45a),
+           TOBN(0x3c4261c5, 0x20d81c8f), TOBN(0xfd4b3453, 0xb00eab00)}},
+         {{TOBN(0x76d48f86, 0xd36e3062), TOBN(0x626c5277, 0xa143ff02),
+           TOBN(0x538174de, 0xaf76f42e), TOBN(0x2267aa86, 0x6407ceac)},
+          {TOBN(0xfad76351, 0x72e572d5), TOBN(0xab861af7, 0xba7330eb),
+           TOBN(0xa0a1c8c7, 0x418d8657), TOBN(0x988821cb, 0x20289a52)}},
+         {{TOBN(0x79732522, 0xcccc18ad), TOBN(0xaadf3f8d, 0xf1a6e027),
+           TOBN(0xf7382c93, 0x17c2354d), TOBN(0x5ce1680c, 0xd818b689)},
+          {TOBN(0x359ebbfc, 0xd9ecbee9), TOBN(0x4330689c, 0x1cae62ac),
+           TOBN(0xb55ce5b4, 0xc51ac38a), TOBN(0x7921dfea, 0xfe238ee8)}},
+         {{TOBN(0x3972bef8, 0x271d1ca5), TOBN(0x3e423bc7, 0xe8aabd18),
+           TOBN(0x57b09f3f, 0x44a3e5e3), TOBN(0x5da886ae, 0x7b444d66)},
+          {TOBN(0x68206634, 0xa9964375), TOBN(0x356a2fa3, 0x699cd0ff),
+           TOBN(0xaf0faa24, 0xdba515e9), TOBN(0x536e1f5c, 0xb321d79a)}},
+         {{TOBN(0xd3b9913a, 0x5c04e4ea), TOBN(0xd549dcfe, 0xd6f11513),
+           TOBN(0xee227bf5, 0x79fd1d94), TOBN(0x9f35afee, 0xb43f2c67)},
+          {TOBN(0xd2638d24, 0xf1314f53), TOBN(0x62baf948, 0xcabcd822),
+           TOBN(0x5542de29, 0x4ef48db0), TOBN(0xb3eb6a04, 0xfc5f6bb2)}},
+         {{TOBN(0x23c110ae, 0x1208e16a), TOBN(0x1a4d15b5, 0xf8363e24),
+           TOBN(0x30716844, 0x164be00b), TOBN(0xa8e24824, 0xf6f4690d)},
+          {TOBN(0x548773a2, 0x90b170cf), TOBN(0xa1bef331, 0x42f191f4),
+           TOBN(0x70f418d0, 0x9247aa97), TOBN(0xea06028e, 0x48be9147)}},
+         {{TOBN(0xe13122f3, 0xdbfb894e), TOBN(0xbe9b79f6, 0xce274b18),
+           TOBN(0x85a49de5, 0xca58aadf), TOBN(0x24957758, 0x11487351)},
+          {TOBN(0x111def61, 0xbb939099), TOBN(0x1d6a974a, 0x26d13694),
+           TOBN(0x4474b4ce, 0xd3fc253b), TOBN(0x3a1485e6, 0x4c5db15e)}},
+         {{TOBN(0xe79667b4, 0x147c15b4), TOBN(0xe34f553b, 0x7bc61301),
+           TOBN(0x032b80f8, 0x17094381), TOBN(0x55d8bafd, 0x723eaa21)},
+          {TOBN(0x5a987995, 0xf1c0e74e), TOBN(0x5a9b292e, 0xebba289c),
+           TOBN(0x413cd4b2, 0xeb4c8251), TOBN(0x98b5d243, 0xd162db0a)}},
+         {{TOBN(0xbb47bf66, 0x68342520), TOBN(0x08d68949, 0xbaa862d1),
+           TOBN(0x11f349c7, 0xe906abcd), TOBN(0x454ce985, 0xed7bf00e)},
+          {TOBN(0xacab5c9e, 0xb55b803b), TOBN(0xb03468ea, 0x31e3c16d),
+           TOBN(0x5c24213d, 0xd273bf12), TOBN(0x211538eb, 0x71587887)}},
+         {{TOBN(0x198e4a2f, 0x731dea2d), TOBN(0xd5856cf2, 0x74ed7b2a),
+           TOBN(0x86a632eb, 0x13a664fe), TOBN(0x932cd909, 0xbda41291)},
+          {TOBN(0x850e95d4, 0xc0c4ddc0), TOBN(0xc0f422f8, 0x347fc2c9),
+           TOBN(0xe68cbec4, 0x86076bcb), TOBN(0xf9e7c0c0, 0xcd6cd286)}},
+         {{TOBN(0x65994ddb, 0x0f5f27ca), TOBN(0xe85461fb, 0xa80d59ff),
+           TOBN(0xff05481a, 0x66601023), TOBN(0xc665427a, 0xfc9ebbfb)},
+          {TOBN(0xb0571a69, 0x7587fd52), TOBN(0x935289f8, 0x8d49efce),
+           TOBN(0x61becc60, 0xea420688), TOBN(0xb22639d9, 0x13a786af)}},
+         {{TOBN(0x1a8e6220, 0x361ecf90), TOBN(0x001f23e0, 0x25506463),
+           TOBN(0xe4ae9b5d, 0x0a5c2b79), TOBN(0xebc9cdad, 0xd8149db5)},
+          {TOBN(0xb33164a1, 0x934aa728), TOBN(0x750eb00e, 0xae9b60f3),
+           TOBN(0x5a91615b, 0x9b9cfbfd), TOBN(0x97015cbf, 0xef45f7f6)}},
+         {{TOBN(0xb462c4a5, 0xbf5151df), TOBN(0x21adcc41, 0xb07118f2),
+           TOBN(0xd60c545b, 0x043fa42c), TOBN(0xfc21aa54, 0xe96be1ab)},
+          {TOBN(0xe84bc32f, 0x4e51ea80), TOBN(0x3dae45f0, 0x259b5d8d),
+           TOBN(0xbb73c7eb, 0xc38f1b5e), TOBN(0xe405a74a, 0xe8ae617d)}},
+         {{TOBN(0xbb1ae9c6, 0x9f1c56bd), TOBN(0x8c176b98, 0x49f196a4),
+           TOBN(0xc448f311, 0x6875092b), TOBN(0xb5afe3de, 0x9f976033)},
+          {TOBN(0xa8dafd49, 0x145813e5), TOBN(0x687fc4d9, 0xe2b34226),
+           TOBN(0xf2dfc92d, 0x4c7ff57f), TOBN(0x004e3fc1, 0x401f1b46)}},
+         {{TOBN(0x5afddab6, 0x1430c9ab), TOBN(0x0bdd41d3, 0x2238e997),
+           TOBN(0xf0947430, 0x418042ae), TOBN(0x71f9adda, 0xcdddc4cb)},
+          {TOBN(0x7090c016, 0xc52dd907), TOBN(0xd9bdf44d, 0x29e2047f),
+           TOBN(0xe6f1fe80, 0x1b1011a6), TOBN(0xb63accbc, 0xd9acdc78)}},
+         {{TOBN(0xcfc7e235, 0x1272a95b), TOBN(0x0c667717, 0xa6276ac8),
+           TOBN(0x3c0d3709, 0xe2d7eef7), TOBN(0x5add2b06, 0x9a685b3e)},
+          {TOBN(0x363ad32d, 0x14ea5d65), TOBN(0xf8e01f06, 0x8d7dd506),
+           TOBN(0xc9ea2213, 0x75b4aac6), TOBN(0xed2a2bf9, 0x0d353466)}},
+         {{TOBN(0x439d79b5, 0xe9d3a7c3), TOBN(0x8e0ee5a6, 0x81b7f34b),
+           TOBN(0xcf3dacf5, 0x1dc4ba75), TOBN(0x1d3d1773, 0xeb3310c7)},
+          {TOBN(0xa8e67112, 0x7747ae83), TOBN(0x31f43160, 0x197d6b40),
+           TOBN(0x0521ccee, 0xcd961400), TOBN(0x67246f11, 0xf6535768)}},
+         {{TOBN(0x702fcc5a, 0xef0c3133), TOBN(0x247cc45d, 0x7e16693b),
+           TOBN(0xfd484e49, 0xc729b749), TOBN(0x522cef7d, 0xb218320f)},
+          {TOBN(0xe56ef405, 0x59ab93b3), TOBN(0x225fba11, 0x9f181071),
+           TOBN(0x33bd6595, 0x15330ed0), TOBN(0xc4be69d5, 0x1ddb32f7)}},
+         {{TOBN(0x264c7668, 0x0448087c), TOBN(0xac30903f, 0x71432dae),
+           TOBN(0x3851b266, 0x00f9bf47), TOBN(0x400ed311, 0x6cdd6d03)},
+          {TOBN(0x045e79fe, 0xf8fd2424), TOBN(0xfdfd974a, 0xfa6da98b),
+           TOBN(0x45c9f641, 0x0c1e673a), TOBN(0x76f2e733, 0x5b2c5168)}},
+         {{TOBN(0x1adaebb5, 0x2a601753), TOBN(0xb286514c, 0xc57c2d49),
+           TOBN(0xd8769670, 0x1e0bfd24), TOBN(0x950c547e, 0x04478922)},
+          {TOBN(0xd1d41969, 0xe5d32bfe), TOBN(0x30bc1472, 0x750d6c3e),
+           TOBN(0x8f3679fe, 0xe0e27f3a), TOBN(0x8f64a7dc, 0xa4a6ee0c)}},
+         {{TOBN(0x2fe59937, 0x633dfb1f), TOBN(0xea82c395, 0x977f2547),
+           TOBN(0xcbdfdf1a, 0x661ea646), TOBN(0xc7ccc591, 0xb9085451)},
+          {TOBN(0x82177962, 0x81761e13), TOBN(0xda57596f, 0x9196885c),
+           TOBN(0xbc17e849, 0x28ffbd70), TOBN(0x1e6e0a41, 0x2671d36f)}},
+         {{TOBN(0x61ae872c, 0x4152fcf5), TOBN(0x441c87b0, 0x9e77e754),
+           TOBN(0xd0799dd5, 0xa34dff09), TOBN(0x766b4e44, 0x88a6b171)},
+          {TOBN(0xdc06a512, 0x11f1c792), TOBN(0xea02ae93, 0x4be35c3e),
+           TOBN(0xe5ca4d6d, 0xe90c469e), TOBN(0x4df4368e, 0x56e4ff5c)}},
+         {{TOBN(0x7817acab, 0x4baef62e), TOBN(0x9f5a2202, 0xa85b91e8),
+           TOBN(0x9666ebe6, 0x6ce57610), TOBN(0x32ad31f3, 0xf73bfe03)},
+          {TOBN(0x628330a4, 0x25bcf4d6), TOBN(0xea950593, 0x515056e6),
+           TOBN(0x59811c89, 0xe1332156), TOBN(0xc89cf1fe, 0x8c11b2d7)}},
+         {{TOBN(0x75b63913, 0x04e60cc0), TOBN(0xce811e8d, 0x4625d375),
+           TOBN(0x030e43fc, 0x2d26e562), TOBN(0xfbb30b4b, 0x608d36a0)},
+          {TOBN(0x634ff82c, 0x48528118), TOBN(0x7c6fe085, 0xcd285911),
+           TOBN(0x7f2830c0, 0x99358f28), TOBN(0x2e60a95e, 0x665e6c09)}},
+         {{TOBN(0x08407d3d, 0x9b785dbf), TOBN(0x530889ab, 0xa759bce7),
+           TOBN(0xf228e0e6, 0x52f61239), TOBN(0x2b6d1461, 0x6879be3c)},
+          {TOBN(0xe6902c04, 0x51a7bbf7), TOBN(0x30ad99f0, 0x76f24a64),
+           TOBN(0x66d9317a, 0x98bc6da0), TOBN(0xf4f877f3, 0xcb596ac0)}},
+         {{TOBN(0xb05ff62d, 0x4c44f119), TOBN(0x4555f536, 0xe9b77416),
+           TOBN(0xc7c0d059, 0x8caed63b), TOBN(0x0cd2b7ce, 0xc358b2a9)},
+          {TOBN(0x3f33287b, 0x46945fa3), TOBN(0xf8785b20, 0xd67c8791),
+           TOBN(0xc54a7a61, 0x9637bd08), TOBN(0x54d4598c, 0x18be79d7)}},
+         {{TOBN(0x889e5acb, 0xc46d7ce1), TOBN(0x9a515bb7, 0x8b085877),
+           TOBN(0xfac1a03d, 0x0b7a5050), TOBN(0x7d3e738a, 0xf2926035)},
+          {TOBN(0x861cc2ce, 0x2a6cb0eb), TOBN(0x6f2e2955, 0x8f7adc79),
+           TOBN(0x61c4d451, 0x33016376), TOBN(0xd9fd2c80, 0x5ad59090)}},
+         {{TOBN(0xe5a83738, 0xb2b836a1), TOBN(0x855b41a0, 0x7c0d6622),
+           TOBN(0x186fe317, 0x7cc19af1), TOBN(0x6465c1ff, 0xfdd99acb)},
+          {TOBN(0x46e5c23f, 0x6974b99e), TOBN(0x75a7cf8b, 0xa2717cbe),
+           TOBN(0x4d2ebc3f, 0x062be658), TOBN(0x094b4447, 0x5f209c98)}},
+         {{TOBN(0x4af285ed, 0xb940cb5a), TOBN(0x6706d792, 0x7cc82f10),
+           TOBN(0xc8c8776c, 0x030526fa), TOBN(0xfa8e6f76, 0xa0da9140)},
+          {TOBN(0x77ea9d34, 0x591ee4f0), TOBN(0x5f46e337, 0x40274166),
+           TOBN(0x1bdf98bb, 0xea671457), TOBN(0xd7c08b46, 0x862a1fe2)}},
+         {{TOBN(0x46cc303c, 0x1c08ad63), TOBN(0x99543440, 0x4c845e7b),
+           TOBN(0x1b8fbdb5, 0x48f36bf7), TOBN(0x5b82c392, 0x8c8273a7)},
+          {TOBN(0x08f712c4, 0x928435d5), TOBN(0x071cf0f1, 0x79330380),
+           TOBN(0xc74c2d24, 0xa8da054a), TOBN(0xcb0e7201, 0x43c46b5c)}},
+         {{TOBN(0x0ad7337a, 0xc0b7eff3), TOBN(0x8552225e, 0xc5e48b3c),
+           TOBN(0xe6f78b0c, 0x73f13a5f), TOBN(0x5e70062e, 0x82349cbe)},
+          {TOBN(0x6b8d5048, 0xe7073969), TOBN(0x392d2a29, 0xc33cb3d2),
+           TOBN(0xee4f727c, 0x4ecaa20f), TOBN(0xa068c99e, 0x2ccde707)}},
+         {{TOBN(0xfcd5651f, 0xb87a2913), TOBN(0xea3e3c15, 0x3cc252f0),
+           TOBN(0x777d92df, 0x3b6cd3e4), TOBN(0x7a414143, 0xc5a732e7)},
+          {TOBN(0xa895951a, 0xa71ff493), TOBN(0xfe980c92, 0xbbd37cf6),
+           TOBN(0x45bd5e64, 0xdecfeeff), TOBN(0x910dc2a9, 0xa44c43e9)}},
+         {{TOBN(0xcb403f26, 0xcca9f54d), TOBN(0x928bbdfb, 0x9303f6db),
+           TOBN(0x3c37951e, 0xa9eee67c), TOBN(0x3bd61a52, 0xf79961c3)},
+          {TOBN(0x09a238e6, 0x395c9a79), TOBN(0x6940ca2d, 0x61eb352d),
+           TOBN(0x7d1e5c5e, 0xc1875631), TOBN(0x1e19742c, 0x1e1b20d1)}},
+         {{TOBN(0x4633d908, 0x23fc2e6e), TOBN(0xa76e29a9, 0x08959149),
+           TOBN(0x61069d9c, 0x84ed7da5), TOBN(0x0baa11cf, 0x5dbcad51)},
+          {TOBN(0xd01eec64, 0x961849da), TOBN(0x93b75f1f, 0xaf3d8c28),
+           TOBN(0x57bc4f9f, 0x1ca2ee44), TOBN(0x5a26322d, 0x00e00558)}},
+         {{TOBN(0x1888d658, 0x61a023ef), TOBN(0x1d72aab4, 0xb9e5246e),
+           TOBN(0xa9a26348, 0xe5563ec0), TOBN(0xa0971963, 0xc3439a43)},
+          {TOBN(0x567dd54b, 0xadb9b5b7), TOBN(0x73fac1a1, 0xc45a524b),
+           TOBN(0x8fe97ef7, 0xfe38e608), TOBN(0x608748d2, 0x3f384f48)}},
+         {{TOBN(0xb0571794, 0xc486094f), TOBN(0x869254a3, 0x8bf3a8d6),
+           TOBN(0x148a8dd1, 0x310b0e25), TOBN(0x99ab9f3f, 0x9aa3f7d8)},
+          {TOBN(0x0927c68a, 0x6706c02e), TOBN(0x22b5e76c, 0x69790e6c),
+           TOBN(0x6c325260, 0x6c71376c), TOBN(0x53a57690, 0x09ef6657)}},
+         {{TOBN(0x8d63f852, 0xedffcf3a), TOBN(0xb4d2ed04, 0x3c0a6f55),
+           TOBN(0xdb3aa8de, 0x12519b9e), TOBN(0x5d38e9c4, 0x1e0a569a)},
+          {TOBN(0x871528bf, 0x303747e2), TOBN(0xa208e77c, 0xf5b5c18d),
+           TOBN(0x9d129c88, 0xca6bf923), TOBN(0xbcbf197f, 0xbf02839f)}},
+         {{TOBN(0x9b9bf030, 0x27323194), TOBN(0x3b055a8b, 0x339ca59d),
+           TOBN(0xb46b2312, 0x0f669520), TOBN(0x19789f1f, 0x497e5f24)},
+          {TOBN(0x9c499468, 0xaaf01801), TOBN(0x72ee1190, 0x8b69d59c),
+           TOBN(0x8bd39595, 0xacf4c079), TOBN(0x3ee11ece, 0x8e0cd048)}},
+         {{TOBN(0xebde86ec, 0x1ed66f18), TOBN(0x225d906b, 0xd61fce43),
+           TOBN(0x5cab07d6, 0xe8bed74d), TOBN(0x16e4617f, 0x27855ab7)},
+          {TOBN(0x6568aadd, 0xb2fbc3dd), TOBN(0xedb5484f, 0x8aeddf5b),
+           TOBN(0x878f20e8, 0x6dcf2fad), TOBN(0x3516497c, 0x615f5699)}}},
+        {{{TOBN(0xef0a3fec, 0xfa181e69), TOBN(0x9ea02f81, 0x30d69a98),
+           TOBN(0xb2e9cf8e, 0x66eab95d), TOBN(0x520f2beb, 0x24720021)},
+          {TOBN(0x621c540a, 0x1df84361), TOBN(0x12037721, 0x71fa6d5d),
+           TOBN(0x6e3c7b51, 0x0ff5f6ff), TOBN(0x817a069b, 0xabb2bef3)}},
+         {{TOBN(0x83572fb6, 0xb294cda6), TOBN(0x6ce9bf75, 0xb9039f34),
+           TOBN(0x20e012f0, 0x095cbb21), TOBN(0xa0aecc1b, 0xd063f0da)},
+          {TOBN(0x57c21c3a, 0xf02909e5), TOBN(0xc7d59ecf, 0x48ce9cdc),
+           TOBN(0x2732b844, 0x8ae336f8), TOBN(0x056e3723, 0x3f4f85f4)}},
+         {{TOBN(0x8a10b531, 0x89e800ca), TOBN(0x50fe0c17, 0x145208fd),
+           TOBN(0x9e43c0d3, 0xb714ba37), TOBN(0x427d200e, 0x34189acc)},
+          {TOBN(0x05dee24f, 0xe616e2c0), TOBN(0x9c25f4c8, 0xee1854c1),
+           TOBN(0x4d3222a5, 0x8f342a73), TOBN(0x0807804f, 0xa027c952)}},
+         {{TOBN(0xc222653a, 0x4f0d56f3), TOBN(0x961e4047, 0xca28b805),
+           TOBN(0x2c03f8b0, 0x4a73434b), TOBN(0x4c966787, 0xab712a19)},
+          {TOBN(0xcc196c42, 0x864fee42), TOBN(0xc1be93da, 0x5b0ece5c),
+           TOBN(0xa87d9f22, 0xc131c159), TOBN(0x2bb6d593, 0xdce45655)}},
+         {{TOBN(0x22c49ec9, 0xb809b7ce), TOBN(0x8a41486b, 0xe2c72c2c),
+           TOBN(0x813b9420, 0xfea0bf36), TOBN(0xb3d36ee9, 0xa66dac69)},
+          {TOBN(0x6fddc08a, 0x328cc987), TOBN(0x0a3bcd2c, 0x3a326461),
+           TOBN(0x7103c49d, 0xd810dbba), TOBN(0xf9d81a28, 0x4b78a4c4)}},
+         {{TOBN(0x3de865ad, 0xe4d55941), TOBN(0xdedafa5e, 0x30384087),
+           TOBN(0x6f414abb, 0x4ef18b9b), TOBN(0x9ee9ea42, 0xfaee5268)},
+          {TOBN(0x260faa16, 0x37a55a4a), TOBN(0xeb19a514, 0x015f93b9),
+           TOBN(0x51d7ebd2, 0x9e9c3598), TOBN(0x523fc56d, 0x1932178e)}},
+         {{TOBN(0x501d070c, 0xb98fe684), TOBN(0xd60fbe9a, 0x124a1458),
+           TOBN(0xa45761c8, 0x92bc6b3f), TOBN(0xf5384858, 0xfe6f27cb)},
+          {TOBN(0x4b0271f7, 0xb59e763b), TOBN(0x3d4606a9, 0x5b5a8e5e),
+           TOBN(0x1eda5d9b, 0x05a48292), TOBN(0xda7731d0, 0xe6fec446)}},
+         {{TOBN(0xa3e33693, 0x90d45871), TOBN(0xe9764040, 0x06166d8d),
+           TOBN(0xb5c33682, 0x89a90403), TOBN(0x4bd17983, 0x72f1d637)},
+          {TOBN(0xa616679e, 0xd5d2c53a), TOBN(0x5ec4bcd8, 0xfdcf3b87),
+           TOBN(0xae6d7613, 0xb66a694e), TOBN(0x7460fc76, 0xe3fc27e5)}},
+         {{TOBN(0x70469b82, 0x95caabee), TOBN(0xde024ca5, 0x889501e3),
+           TOBN(0x6bdadc06, 0x076ed265), TOBN(0x0cb1236b, 0x5a0ef8b2)},
+          {TOBN(0x4065ddbf, 0x0972ebf9), TOBN(0xf1dd3875, 0x22aca432),
+           TOBN(0xa88b97cf, 0x744aff76), TOBN(0xd1359afd, 0xfe8e3d24)}},
+         {{TOBN(0x52a3ba2b, 0x91502cf3), TOBN(0x2c3832a8, 0x084db75d),
+           TOBN(0x04a12ddd, 0xde30b1c9), TOBN(0x7802eabc, 0xe31fd60c)},
+          {TOBN(0x33707327, 0xa37fddab), TOBN(0x65d6f2ab, 0xfaafa973),
+           TOBN(0x3525c5b8, 0x11e6f91a), TOBN(0x76aeb0c9, 0x5f46530b)}},
+         {{TOBN(0xe8815ff6, 0x2f93a675), TOBN(0xa6ec9684, 0x05f48679),
+           TOBN(0x6dcbb556, 0x358ae884), TOBN(0x0af61472, 0xe19e3873)},
+          {TOBN(0x72334372, 0xa5f696be), TOBN(0xc65e57ea, 0x6f22fb70),
+           TOBN(0x268da30c, 0x946cea90), TOBN(0x136a8a87, 0x65681b2a)}},
+         {{TOBN(0xad5e81dc, 0x0f9f44d4), TOBN(0xf09a6960, 0x2c46585a),
+           TOBN(0xd1649164, 0xc447d1b1), TOBN(0x3b4b36c8, 0x879dc8b1)},
+          {TOBN(0x20d4177b, 0x3b6b234c), TOBN(0x096a2505, 0x1730d9d0),
+           TOBN(0x0611b9b8, 0xef80531d), TOBN(0xba904b3b, 0x64bb495d)}},
+         {{TOBN(0x1192d9d4, 0x93a3147a), TOBN(0x9f30a5dc, 0x9a565545),
+           TOBN(0x90b1f9cb, 0x6ef07212), TOBN(0x29958546, 0x0d87fc13)},
+          {TOBN(0xd3323eff, 0xc17db9ba), TOBN(0xcb18548c, 0xcb1644a8),
+           TOBN(0x18a306d4, 0x4f49ffbc), TOBN(0x28d658f1, 0x4c2e8684)}},
+         {{TOBN(0x44ba60cd, 0xa99f8c71), TOBN(0x67b7abdb, 0x4bf742ff),
+           TOBN(0x66310f9c, 0x914b3f99), TOBN(0xae430a32, 0xf412c161)},
+          {TOBN(0x1e6776d3, 0x88ace52f), TOBN(0x4bc0fa24, 0x52d7067d),
+           TOBN(0x03c286aa, 0x8f07cd1b), TOBN(0x4cb8f38c, 0xa985b2c1)}},
+         {{TOBN(0x83ccbe80, 0x8c3bff36), TOBN(0x005a0bd2, 0x5263e575),
+           TOBN(0x460d7dda, 0x259bdcd1), TOBN(0x4a1c5642, 0xfa5cab6b)},
+          {TOBN(0x2b7bdbb9, 0x9fe4fc88), TOBN(0x09418e28, 0xcc97bbb5),
+           TOBN(0xd8274fb4, 0xa12321ae), TOBN(0xb137007d, 0x5c87b64e)}},
+         {{TOBN(0x80531fe1, 0xc63c4962), TOBN(0x50541e89, 0x981fdb25),
+           TOBN(0xdc1291a1, 0xfd4c2b6b), TOBN(0xc0693a17, 0xa6df4fca)},
+          {TOBN(0xb2c4604e, 0x0117f203), TOBN(0x245f1963, 0x0a99b8d0),
+           TOBN(0xaedc20aa, 0xc6212c44), TOBN(0xb1ed4e56, 0x520f52a8)}},
+         {{TOBN(0xfe48f575, 0xf8547be3), TOBN(0x0a7033cd, 0xa9e45f98),
+           TOBN(0x4b45d3a9, 0x18c50100), TOBN(0xb2a6cd6a, 0xa61d41da)},
+          {TOBN(0x60bbb4f5, 0x57933c6b), TOBN(0xa7538ebd, 0x2b0d7ffc),
+           TOBN(0x9ea3ab8d, 0x8cd626b6), TOBN(0x8273a484, 0x3601625a)}},
+         {{TOBN(0x88859845, 0x0168e508), TOBN(0x8cbc9bb2, 0x99a94abd),
+           TOBN(0x713ac792, 0xfab0a671), TOBN(0xa3995b19, 0x6c9ebffc)},
+          {TOBN(0xe711668e, 0x1239e152), TOBN(0x56892558, 0xbbb8dff4),
+           TOBN(0x8bfc7dab, 0xdbf17963), TOBN(0x5b59fe5a, 0xb3de1253)}},
+         {{TOBN(0x7e3320eb, 0x34a9f7ae), TOBN(0xe5e8cf72, 0xd751efe4),
+           TOBN(0x7ea003bc, 0xd9be2f37), TOBN(0xc0f551a0, 0xb6c08ef7)},
+          {TOBN(0x56606268, 0x038f6725), TOBN(0x1dd38e35, 0x6d92d3b6),
+           TOBN(0x07dfce7c, 0xc3cbd686), TOBN(0x4e549e04, 0x651c5da8)}},
+         {{TOBN(0x4058f93b, 0x08b19340), TOBN(0xc2fae6f4, 0xcac6d89d),
+           TOBN(0x4bad8a8c, 0x8f159cc7), TOBN(0x0ddba4b3, 0xcb0b601c)},
+          {TOBN(0xda4fc7b5, 0x1dd95f8c), TOBN(0x1d163cd7, 0xcea5c255),
+           TOBN(0x30707d06, 0x274a8c4c), TOBN(0x79d9e008, 0x2802e9ce)}},
+         {{TOBN(0x02a29ebf, 0xe6ddd505), TOBN(0x37064e74, 0xb50bed1a),
+           TOBN(0x3f6bae65, 0xa7327d57), TOBN(0x3846f5f1, 0xf83920bc)},
+          {TOBN(0x87c37491, 0x60df1b9b), TOBN(0x4cfb2895, 0x2d1da29f),
+           TOBN(0x10a478ca, 0x4ed1743c), TOBN(0x390c6030, 0x3edd47c6)}},
+         {{TOBN(0x8f3e5312, 0x8c0a78de), TOBN(0xccd02bda, 0x1e85df70),
+           TOBN(0xd6c75c03, 0xa61b6582), TOBN(0x0762921c, 0xfc0eebd1)},
+          {TOBN(0xd34d0823, 0xd85010c0), TOBN(0xd73aaacb, 0x0044cf1f),
+           TOBN(0xfb4159bb, 0xa3b5e78a), TOBN(0x2287c7f7, 0xe5826f3f)}},
+         {{TOBN(0x4aeaf742, 0x580b1a01), TOBN(0xf080415d, 0x60423b79),
+           TOBN(0xe12622cd, 0xa7dea144), TOBN(0x49ea4996, 0x59d62472)},
+          {TOBN(0xb42991ef, 0x571f3913), TOBN(0x0610f214, 0xf5b25a8a),
+           TOBN(0x47adc585, 0x30b79e8f), TOBN(0xf90e3df6, 0x07a065a2)}},
+         {{TOBN(0x5d0a5deb, 0x43e2e034), TOBN(0x53fb5a34, 0x444024aa),
+           TOBN(0xa8628c68, 0x6b0c9f7f), TOBN(0x9c69c29c, 0xac563656)},
+          {TOBN(0x5a231feb, 0xbace47b6), TOBN(0xbdce0289, 0x9ea5a2ec),
+           TOBN(0x05da1fac, 0x9463853e), TOBN(0x96812c52, 0x509e78aa)}},
+         {{TOBN(0xd3fb5771, 0x57151692), TOBN(0xeb2721f8, 0xd98e1c44),
+           TOBN(0xc0506087, 0x32399be1), TOBN(0xda5a5511, 0xd979d8b8)},
+          {TOBN(0x737ed55d, 0xc6f56780), TOBN(0xe20d3004, 0x0dc7a7f4),
+           TOBN(0x02ce7301, 0xf5941a03), TOBN(0x91ef5215, 0xed30f83a)}},
+         {{TOBN(0x28727fc1, 0x4092d85f), TOBN(0x72d223c6, 0x5c49e41a),
+           TOBN(0xa7cf30a2, 0xba6a4d81), TOBN(0x7c086209, 0xb030d87d)},
+          {TOBN(0x04844c7d, 0xfc588b09), TOBN(0x728cd499, 0x5874bbb0),
+           TOBN(0xcc1281ee, 0xe84c0495), TOBN(0x0769b5ba, 0xec31958f)}},
+         {{TOBN(0x665c228b, 0xf99c2471), TOBN(0xf2d8a11b, 0x191eb110),
+           TOBN(0x4594f494, 0xd36d7024), TOBN(0x482ded8b, 0xcdcb25a1)},
+          {TOBN(0xc958a9d8, 0xdadd4885), TOBN(0x7004477e, 0xf1d2b547),
+           TOBN(0x0a45f6ef, 0x2a0af550), TOBN(0x4fc739d6, 0x2f8d6351)}},
+         {{TOBN(0x75cdaf27, 0x786f08a9), TOBN(0x8700bb26, 0x42c2737f),
+           TOBN(0x855a7141, 0x1c4e2670), TOBN(0x810188c1, 0x15076fef)},
+          {TOBN(0xc251d0c9, 0xabcd3297), TOBN(0xae4c8967, 0xf48108eb),
+           TOBN(0xbd146de7, 0x18ceed30), TOBN(0xf9d4f07a, 0xc986bced)}},
+         {{TOBN(0x5ad98ed5, 0x83fa1e08), TOBN(0x7780d33e, 0xbeabd1fb),
+           TOBN(0xe330513c, 0x903b1196), TOBN(0xba11de9e, 0xa47bc8c4)},
+          {TOBN(0x684334da, 0x02c2d064), TOBN(0x7ecf360d, 0xa48de23b),
+           TOBN(0x57a1b474, 0x0a9089d8), TOBN(0xf28fa439, 0xff36734c)}},
+         {{TOBN(0xf2a482cb, 0xea4570b3), TOBN(0xee65d68b, 0xa5ebcee9),
+           TOBN(0x988d0036, 0xb9694cd5), TOBN(0x53edd0e9, 0x37885d32)},
+          {TOBN(0xe37e3307, 0xbeb9bc6d), TOBN(0xe9abb907, 0x9f5c6768),
+           TOBN(0x4396ccd5, 0x51f2160f), TOBN(0x2500888c, 0x47336da6)}},
+         {{TOBN(0x383f9ed9, 0x926fce43), TOBN(0x809dd1c7, 0x04da2930),
+           TOBN(0x30f6f596, 0x8a4cb227), TOBN(0x0d700c7f, 0x73a56b38)},
+          {TOBN(0x1825ea33, 0xab64a065), TOBN(0xaab9b735, 0x1338df80),
+           TOBN(0x1516100d, 0x9b63f57f), TOBN(0x2574395a, 0x27a6a634)}},
+         {{TOBN(0xb5560fb6, 0x700a1acd), TOBN(0xe823fd73, 0xfd999681),
+           TOBN(0xda915d1f, 0x6cb4e1ba), TOBN(0x0d030118, 0x6ebe00a3)},
+          {TOBN(0x744fb0c9, 0x89fca8cd), TOBN(0x970d01db, 0xf9da0e0b),
+           TOBN(0x0ad8c564, 0x7931d76f), TOBN(0xb15737bf, 0xf659b96a)}},
+         {{TOBN(0xdc9933e8, 0xa8b484e7), TOBN(0xb2fdbdf9, 0x7a26dec7),
+           TOBN(0x2349e9a4, 0x9f1f0136), TOBN(0x7860368e, 0x70fddddb)},
+          {TOBN(0xd93d2c1c, 0xf9ad3e18), TOBN(0x6d6c5f17, 0x689f4e79),
+           TOBN(0x7a544d91, 0xb24ff1b6), TOBN(0x3e12a5eb, 0xfe16cd8c)}},
+         {{TOBN(0x543574e9, 0xa56b872f), TOBN(0xa1ad550c, 0xfcf68ea2),
+           TOBN(0x689e37d2, 0x3f560ef7), TOBN(0x8c54b9ca, 0xc9d47a8b)},
+          {TOBN(0x46d40a4a, 0x088ac342), TOBN(0xec450c7c, 0x1576c6d0),
+           TOBN(0xb589e31c, 0x1f9689e9), TOBN(0xdacf2602, 0xb8781718)}},
+         {{TOBN(0xa89237c6, 0xc8cb6b42), TOBN(0x1326fc93, 0xb96ef381),
+           TOBN(0x55d56c6d, 0xb5f07825), TOBN(0xacba2eea, 0x7449e22d)},
+          {TOBN(0x74e0887a, 0x633c3000), TOBN(0xcb6cd172, 0xd7cbcf71),
+           TOBN(0x309e81de, 0xc36cf1be), TOBN(0x07a18a6d, 0x60ae399b)}},
+         {{TOBN(0xb36c2679, 0x9edce57e), TOBN(0x52b892f4, 0xdf001d41),
+           TOBN(0xd884ae5d, 0x16a1f2c6), TOBN(0x9b329424, 0xefcc370a)},
+          {TOBN(0x3120daf2, 0xbd2e21df), TOBN(0x55298d2d, 0x02470a99),
+           TOBN(0x0b78af6c, 0xa05db32e), TOBN(0x5c76a331, 0x601f5636)}},
+         {{TOBN(0xaae861ff, 0xf8a4f29c), TOBN(0x70dc9240, 0xd68f8d49),
+           TOBN(0x960e649f, 0x81b1321c), TOBN(0x3d2c801b, 0x8792e4ce)},
+          {TOBN(0xf479f772, 0x42521876), TOBN(0x0bed93bc, 0x416c79b1),
+           TOBN(0xa67fbc05, 0x263e5bc9), TOBN(0x01e8e630, 0x521db049)}},
+         {{TOBN(0x76f26738, 0xc6f3431e), TOBN(0xe609cb02, 0xe3267541),
+           TOBN(0xb10cff2d, 0x818c877c), TOBN(0x1f0e75ce, 0x786a13cb)},
+          {TOBN(0xf4fdca64, 0x1158544d), TOBN(0x5d777e89, 0x6cb71ed0),
+           TOBN(0x3c233737, 0xa9aa4755), TOBN(0x7b453192, 0xe527ab40)}},
+         {{TOBN(0xdb59f688, 0x39f05ffe), TOBN(0x8f4f4be0, 0x6d82574e),
+           TOBN(0xcce3450c, 0xee292d1b), TOBN(0xaa448a12, 0x61ccd086)},
+          {TOBN(0xabce91b3, 0xf7914967), TOBN(0x4537f09b, 0x1908a5ed),
+           TOBN(0xa812421e, 0xf51042e7), TOBN(0xfaf5cebc, 0xec0b3a34)}},
+         {{TOBN(0x730ffd87, 0x4ca6b39a), TOBN(0x70fb72ed, 0x02efd342),
+           TOBN(0xeb4735f9, 0xd75c8edb), TOBN(0xc11f2157, 0xc278aa51)},
+          {TOBN(0xc459f635, 0xbf3bfebf), TOBN(0x3a1ff0b4, 0x6bd9601f),
+           TOBN(0xc9d12823, 0xc420cb73), TOBN(0x3e9af3e2, 0x3c2915a3)}},
+         {{TOBN(0xe0c82c72, 0xb41c3440), TOBN(0x175239e5, 0xe3039a5f),
+           TOBN(0xe1084b8a, 0x558795a3), TOBN(0x328d0a1d, 0xd01e5c60)},
+          {TOBN(0x0a495f2e, 0xd3788a04), TOBN(0x25d8ff16, 0x66c11a9f),
+           TOBN(0xf5155f05, 0x9ed692d6), TOBN(0x954fa107, 0x4f425fe4)}},
+         {{TOBN(0xd16aabf2, 0xe98aaa99), TOBN(0x90cd8ba0, 0x96b0f88a),
+           TOBN(0x957f4782, 0xc154026a), TOBN(0x54ee0734, 0x52af56d2)},
+          {TOBN(0xbcf89e54, 0x45b4147a), TOBN(0x3d102f21, 0x9a52816c),
+           TOBN(0x6808517e, 0x39b62e77), TOBN(0x92e25421, 0x69169ad8)}},
+         {{TOBN(0xd721d871, 0xbb608558), TOBN(0x60e4ebae, 0xf6d4ff9b),
+           TOBN(0x0ba10819, 0x41f2763e), TOBN(0xca2e45be, 0x51ee3247)},
+          {TOBN(0x66d172ec, 0x2bfd7a5f), TOBN(0x528a8f2f, 0x74d0b12d),
+           TOBN(0xe17f1e38, 0xdabe70dc), TOBN(0x1d5d7316, 0x9f93983c)}},
+         {{TOBN(0x51b2184a, 0xdf423e31), TOBN(0xcb417291, 0xaedb1a10),
+           TOBN(0x2054ca93, 0x625bcab9), TOBN(0x54396860, 0xa98998f0)},
+          {TOBN(0x4e53f6c4, 0xa54ae57e), TOBN(0x0ffeb590, 0xee648e9d),
+           TOBN(0xfbbdaadc, 0x6afaf6bc), TOBN(0xf88ae796, 0xaa3bfb8a)}},
+         {{TOBN(0x209f1d44, 0xd2359ed9), TOBN(0xac68dd03, 0xf3544ce2),
+           TOBN(0xf378da47, 0xfd51e569), TOBN(0xe1abd860, 0x2cc80097)},
+          {TOBN(0x23ca18d9, 0x343b6e3a), TOBN(0x480797e8, 0xb40a1bae),
+           TOBN(0xd1f0c717, 0x533f3e67), TOBN(0x44896970, 0x06e6cdfc)}},
+         {{TOBN(0x8ca21055, 0x52a82e8d), TOBN(0xb2caf785, 0x78460cdc),
+           TOBN(0x4c1b7b62, 0xe9037178), TOBN(0xefc09d2c, 0xdb514b58)},
+          {TOBN(0x5f2df9ee, 0x9113be5c), TOBN(0x2fbda78f, 0xb3f9271c),
+           TOBN(0xe09a81af, 0x8f83fc54), TOBN(0x06b13866, 0x8afb5141)}},
+         {{TOBN(0x38f6480f, 0x43e3865d), TOBN(0x72dd77a8, 0x1ddf47d9),
+           TOBN(0xf2a8e971, 0x4c205ff7), TOBN(0x46d449d8, 0x9d088ad8)},
+          {TOBN(0x926619ea, 0x185d706f), TOBN(0xe47e02eb, 0xc7dd7f62),
+           TOBN(0xe7f120a7, 0x8cbc2031), TOBN(0xc18bef00, 0x998d4ac9)}},
+         {{TOBN(0x18f37a9c, 0x6bdf22da), TOBN(0xefbc432f, 0x90dc82df),
+           TOBN(0xc52cef8e, 0x5d703651), TOBN(0x82887ba0, 0xd99881a5)},
+          {TOBN(0x7cec9dda, 0xb920ec1d), TOBN(0xd0d7e8c3, 0xec3e8d3b),
+           TOBN(0x445bc395, 0x4ca88747), TOBN(0xedeaa2e0, 0x9fd53535)}},
+         {{TOBN(0x461b1d93, 0x6cc87475), TOBN(0xd92a52e2, 0x6d2383bd),
+           TOBN(0xfabccb59, 0xd7903546), TOBN(0x6111a761, 0x3d14b112)},
+          {TOBN(0x0ae584fe, 0xb3d5f612), TOBN(0x5ea69b8d, 0x60e828ec),
+           TOBN(0x6c078985, 0x54087030), TOBN(0x649cab04, 0xac4821fe)}},
+         {{TOBN(0x25ecedcf, 0x8bdce214), TOBN(0xb5622f72, 0x86af7361),
+           TOBN(0x0e1227aa, 0x7038b9e2), TOBN(0xd0efb273, 0xac20fa77)},
+          {TOBN(0x817ff88b, 0x79df975b), TOBN(0x856bf286, 0x1999503e),
+           TOBN(0xb4d5351f, 0x5038ec46), TOBN(0x740a52c5, 0xfc42af6e)}},
+         {{TOBN(0x2e38bb15, 0x2cbb1a3f), TOBN(0xc3eb99fe, 0x17a83429),
+           TOBN(0xca4fcbf1, 0xdd66bb74), TOBN(0x880784d6, 0xcde5e8fc)},
+          {TOBN(0xddc84c1c, 0xb4e7a0be), TOBN(0x8780510d, 0xbd15a72f),
+           TOBN(0x44bcf1af, 0x81ec30e1), TOBN(0x141e50a8, 0x0a61073e)}},
+         {{TOBN(0x0d955718, 0x47be87ae), TOBN(0x68a61417, 0xf76a4372),
+           TOBN(0xf57e7e87, 0xc607c3d3), TOBN(0x043afaf8, 0x5252f332)},
+          {TOBN(0xcc14e121, 0x1552a4d2), TOBN(0xb6dee692, 0xbb4d4ab4),
+           TOBN(0xb6ab74c8, 0xa03816a4), TOBN(0x84001ae4, 0x6f394a29)}},
+         {{TOBN(0x5bed8344, 0xd795fb45), TOBN(0x57326e7d, 0xb79f55a5),
+           TOBN(0xc9533ce0, 0x4accdffc), TOBN(0x53473caf, 0x3993fa04)},
+          {TOBN(0x7906eb93, 0xa13df4c8), TOBN(0xa73e51f6, 0x97cbe46f),
+           TOBN(0xd1ab3ae1, 0x0ae4ccf8), TOBN(0x25614508, 0x8a5b3dbc)}},
+         {{TOBN(0x61eff962, 0x11a71b27), TOBN(0xdf71412b, 0x6bb7fa39),
+           TOBN(0xb31ba6b8, 0x2bd7f3ef), TOBN(0xb0b9c415, 0x69180d29)},
+          {TOBN(0xeec14552, 0x014cdde5), TOBN(0x702c624b, 0x227b4bbb),
+           TOBN(0x2b15e8c2, 0xd3e988f3), TOBN(0xee3bcc6d, 0xa4f7fd04)}},
+         {{TOBN(0x9d00822a, 0x42ac6c85), TOBN(0x2db0cea6, 0x1df9f2b7),
+           TOBN(0xd7cad2ab, 0x42de1e58), TOBN(0x346ed526, 0x2d6fbb61)},
+          {TOBN(0xb3962995, 0x1a2faf09), TOBN(0x2fa8a580, 0x7c25612e),
+           TOBN(0x30ae04da, 0x7cf56490), TOBN(0x75662908, 0x0eea3961)}},
+         {{TOBN(0x3609f5c5, 0x3d080847), TOBN(0xcb081d39, 0x5241d4f6),
+           TOBN(0xb4fb3810, 0x77961a63), TOBN(0xc20c5984, 0x2abb66fc)},
+          {TOBN(0x3d40aa7c, 0xf902f245), TOBN(0x9cb12736, 0x4e536b1e),
+           TOBN(0x5eda24da, 0x99b3134f), TOBN(0xafbd9c69, 0x5cd011af)}},
+         {{TOBN(0x9a16e30a, 0xc7088c7d), TOBN(0x5ab65710, 0x3207389f),
+           TOBN(0x1b09547f, 0xe7407a53), TOBN(0x2322f9d7, 0x4fdc6eab)},
+          {TOBN(0xc0f2f22d, 0x7430de4d), TOBN(0x19382696, 0xe68ca9a9),
+           TOBN(0x17f1eff1, 0x918e5868), TOBN(0xe3b5b635, 0x586f4204)}},
+         {{TOBN(0x146ef980, 0x3fbc4341), TOBN(0x359f2c80, 0x5b5eed4e),
+           TOBN(0x9f35744e, 0x7482e41d), TOBN(0x9a9ac3ec, 0xf3b224c2)},
+          {TOBN(0x9161a6fe, 0x91fc50ae), TOBN(0x89ccc66b, 0xc613fa7c),
+           TOBN(0x89268b14, 0xc732f15a), TOBN(0x7cd6f4e2, 0xb467ed03)}},
+         {{TOBN(0xfbf79869, 0xce56b40e), TOBN(0xf93e094c, 0xc02dde98),
+           TOBN(0xefe0c3a8, 0xedee2cd7), TOBN(0x90f3ffc0, 0xb268fd42)},
+          {TOBN(0x81a7fd56, 0x08241aed), TOBN(0x95ab7ad8, 0x00b1afe8),
+           TOBN(0x40127056, 0x3e310d52), TOBN(0xd3ffdeb1, 0x09d9fc43)}},
+         {{TOBN(0xc8f85c91, 0xd11a8594), TOBN(0x2e74d258, 0x31cf6db8),
+           TOBN(0x829c7ca3, 0x02b5dfd0), TOBN(0xe389cfbe, 0x69143c86)},
+          {TOBN(0xd01b6405, 0x941768d8), TOBN(0x45103995, 0x03bf825d),
+           TOBN(0xcc4ee166, 0x56cd17e2), TOBN(0xbea3c283, 0xba037e79)}},
+         {{TOBN(0x4e1ac06e, 0xd9a47520), TOBN(0xfbfe18aa, 0xaf852404),
+           TOBN(0x5615f8e2, 0x8087648a), TOBN(0x7301e47e, 0xb9d150d9)},
+          {TOBN(0x79f9f9dd, 0xb299b977), TOBN(0x76697a7b, 0xa5b78314),
+           TOBN(0x10d67468, 0x7d7c90e7), TOBN(0x7afffe03, 0x937210b5)}},
+         {{TOBN(0x5aef3e4b, 0x28c22cee), TOBN(0xefb0ecd8, 0x09fd55ae),
+           TOBN(0x4cea7132, 0x0d2a5d6a), TOBN(0x9cfb5fa1, 0x01db6357)},
+          {TOBN(0x395e0b57, 0xf36e1ac5), TOBN(0x008fa9ad, 0x36cafb7d),
+           TOBN(0x8f6cdf70, 0x5308c4db), TOBN(0x51527a37, 0x95ed2477)}},
+         {{TOBN(0xba0dee30, 0x5bd21311), TOBN(0x6ed41b22, 0x909c90d7),
+           TOBN(0xc5f6b758, 0x7c8696d3), TOBN(0x0db8eaa8, 0x3ce83a80)},
+          {TOBN(0xd297fe37, 0xb24b4b6f), TOBN(0xfe58afe8, 0x522d1f0d),
+           TOBN(0x97358736, 0x8c98dbd9), TOBN(0x6bc226ca, 0x9454a527)}},
+         {{TOBN(0xa12b384e, 0xce53c2d0), TOBN(0x779d897d, 0x5e4606da),
+           TOBN(0xa53e47b0, 0x73ec12b0), TOBN(0x462dbbba, 0x5756f1ad)},
+          {TOBN(0x69fe09f2, 0xcafe37b6), TOBN(0x273d1ebf, 0xecce2e17),
+           TOBN(0x8ac1d538, 0x3cf607fd), TOBN(0x8035f7ff, 0x12e10c25)}}},
+        {{{TOBN(0x854d34c7, 0x7e6c5520), TOBN(0xc27df9ef, 0xdcb9ea58),
+           TOBN(0x405f2369, 0xd686666d), TOBN(0x29d1febf, 0x0417aa85)},
+          {TOBN(0x9846819e, 0x93470afe), TOBN(0x3e6a9669, 0xe2a27f9e),
+           TOBN(0x24d008a2, 0xe31e6504), TOBN(0xdba7cecf, 0x9cb7680a)}},
+         {{TOBN(0xecaff541, 0x338d6e43), TOBN(0x56f7dd73, 0x4541d5cc),
+           TOBN(0xb5d426de, 0x96bc88ca), TOBN(0x48d94f6b, 0x9ed3a2c3)},
+          {TOBN(0x6354a3bb, 0x2ef8279c), TOBN(0xd575465b, 0x0b1867f2),
+           TOBN(0xef99b0ff, 0x95225151), TOBN(0xf3e19d88, 0xf94500d8)}},
+         {{TOBN(0x92a83268, 0xe32dd620), TOBN(0x913ec99f, 0x627849a2),
+           TOBN(0xedd8fdfa, 0x2c378882), TOBN(0xaf96f33e, 0xee6f8cfe)},
+          {TOBN(0xc06737e5, 0xdc3fa8a5), TOBN(0x236bb531, 0xb0b03a1d),
+           TOBN(0x33e59f29, 0x89f037b0), TOBN(0x13f9b5a7, 0xd9a12a53)}},
+         {{TOBN(0x0d0df6ce, 0x51efb310), TOBN(0xcb5b2eb4, 0x958df5be),
+           TOBN(0xd6459e29, 0x36158e59), TOBN(0x82aae2b9, 0x1466e336)},
+          {TOBN(0xfb658a39, 0x411aa636), TOBN(0x7152ecc5, 0xd4c0a933),
+           TOBN(0xf10c758a, 0x49f026b7), TOBN(0xf4837f97, 0xcb09311f)}},
+         {{TOBN(0xddfb02c4, 0xc753c45f), TOBN(0x18ca81b6, 0xf9c840fe),
+           TOBN(0x846fd09a, 0xb0f8a3e6), TOBN(0xb1162add, 0xe7733dbc)},
+          {TOBN(0x7070ad20, 0x236e3ab6), TOBN(0xf88cdaf5, 0xb2a56326),
+           TOBN(0x05fc8719, 0x997cbc7a), TOBN(0x442cd452, 0x4b665272)}},
+         {{TOBN(0x7807f364, 0xb71698f5), TOBN(0x6ba418d2, 0x9f7b605e),
+           TOBN(0xfd20b00f, 0xa03b2cbb), TOBN(0x883eca37, 0xda54386f)},
+          {TOBN(0xff0be43f, 0xf3437f24), TOBN(0xe910b432, 0xa48bb33c),
+           TOBN(0x4963a128, 0x329df765), TOBN(0xac1dd556, 0xbe2fe6f7)}},
+         {{TOBN(0x557610f9, 0x24a0a3fc), TOBN(0x38e17bf4, 0xe881c3f9),
+           TOBN(0x6ba84faf, 0xed0dac99), TOBN(0xd4a222c3, 0x59eeb918)},
+          {TOBN(0xc79c1dbe, 0x13f542b6), TOBN(0x1fc65e0d, 0xe425d457),
+           TOBN(0xeffb754f, 0x1debb779), TOBN(0x638d8fd0, 0x9e08af60)}},
+         {{TOBN(0x994f523a, 0x626332d5), TOBN(0x7bc38833, 0x5561bb44),
+           TOBN(0x005ed4b0, 0x3d845ea2), TOBN(0xd39d3ee1, 0xc2a1f08a)},
+          {TOBN(0x6561fdd3, 0xe7676b0d), TOBN(0x620e35ff, 0xfb706017),
+           TOBN(0x36ce424f, 0xf264f9a8), TOBN(0xc4c3419f, 0xda2681f7)}},
+         {{TOBN(0xfb6afd2f, 0x69beb6e8), TOBN(0x3a50b993, 0x6d700d03),
+           TOBN(0xc840b2ad, 0x0c83a14f), TOBN(0x573207be, 0x54085bef)},
+          {TOBN(0x5af882e3, 0x09fe7e5b), TOBN(0x957678a4, 0x3b40a7e1),
+           TOBN(0x172d4bdd, 0x543056e2), TOBN(0x9c1b26b4, 0x0df13c0a)}},
+         {{TOBN(0x1c30861c, 0xf405ff06), TOBN(0xebac86bd, 0x486e828b),
+           TOBN(0xe791a971, 0x636933fc), TOBN(0x50e7c2be, 0x7aeee947)},
+          {TOBN(0xc3d4a095, 0xfa90d767), TOBN(0xae60eb7b, 0xe670ab7b),
+           TOBN(0x17633a64, 0x397b056d), TOBN(0x93a21f33, 0x105012aa)}},
+         {{TOBN(0x663c370b, 0xabb88643), TOBN(0x91df36d7, 0x22e21599),
+           TOBN(0x183ba835, 0x8b761671), TOBN(0x381eea1d, 0x728f3bf1)},
+          {TOBN(0xb9b2f1ba, 0x39966e6c), TOBN(0x7c464a28, 0xe7295492),
+           TOBN(0x0fd5f70a, 0x09b26b7f), TOBN(0xa9aba1f9, 0xfbe009df)}},
+         {{TOBN(0x857c1f22, 0x369b87ad), TOBN(0x3c00e5d9, 0x32fca556),
+           TOBN(0x1ad74cab, 0x90b06466), TOBN(0xa7112386, 0x550faaf2)},
+          {TOBN(0x7435e198, 0x6d9bd5f5), TOBN(0x2dcc7e38, 0x59c3463f),
+           TOBN(0xdc7df748, 0xca7bd4b2), TOBN(0x13cd4c08, 0x9dec2f31)}},
+         {{TOBN(0x0d3b5df8, 0xe3237710), TOBN(0x0dadb26e, 0xcbd2f7b0),
+           TOBN(0x9f5966ab, 0xe4aa082b), TOBN(0x666ec8de, 0x350e966e)},
+          {TOBN(0x1bfd1ed5, 0xee524216), TOBN(0xcd93c59b, 0x41dab0b6),
+           TOBN(0x658a8435, 0xd186d6ba), TOBN(0x1b7d34d2, 0x159d1195)}},
+         {{TOBN(0x5936e460, 0x22caf46b), TOBN(0x6a45dd8f, 0x9a96fe4f),
+           TOBN(0xf7925434, 0xb98f474e), TOBN(0x41410412, 0x0053ef15)},
+          {TOBN(0x71cf8d12, 0x41de97bf), TOBN(0xb8547b61, 0xbd80bef4),
+           TOBN(0xb47d3970, 0xc4db0037), TOBN(0xf1bcd328, 0xfef20dff)}},
+         {{TOBN(0x31a92e09, 0x10caad67), TOBN(0x1f591960, 0x5531a1e1),
+           TOBN(0x3bb852e0, 0x5f4fc840), TOBN(0x63e297ca, 0x93a72c6c)},
+          {TOBN(0x3c2b0b2e, 0x49abad67), TOBN(0x6ec405fc, 0xed3db0d9),
+           TOBN(0xdc14a530, 0x7fef1d40), TOBN(0xccd19846, 0x280896fc)}},
+         {{TOBN(0x00f83176, 0x9bb81648), TOBN(0xd69eb485, 0x653120d0),
+           TOBN(0xd17d75f4, 0x4ccabc62), TOBN(0x34a07f82, 0xb749fcb1)},
+          {TOBN(0x2c3af787, 0xbbfb5554), TOBN(0xb06ed4d0, 0x62e283f8),
+           TOBN(0x5722889f, 0xa19213a0), TOBN(0x162b085e, 0xdcf3c7b4)}},
+         {{TOBN(0xbcaecb31, 0xe0dd3eca), TOBN(0xc6237fbc, 0xe52f13a5),
+           TOBN(0xcc2b6b03, 0x27bac297), TOBN(0x2ae1cac5, 0xb917f54a)},
+          {TOBN(0x474807d4, 0x7845ae4f), TOBN(0xfec7dd92, 0xce5972e0),
+           TOBN(0xc3bd2541, 0x1d7915bb), TOBN(0x66f85dc4, 0xd94907ca)}},
+         {{TOBN(0xd981b888, 0xbdbcf0ca), TOBN(0xd75f5da6, 0xdf279e9f),
+           TOBN(0x128bbf24, 0x7054e934), TOBN(0x3c6ff6e5, 0x81db134b)},
+          {TOBN(0x795b7cf4, 0x047d26e4), TOBN(0xf370f7b8, 0x5049ec37),
+           TOBN(0xc6712d4d, 0xced945af), TOBN(0xdf30b5ec, 0x095642bc)}},
+         {{TOBN(0x9b034c62, 0x4896246e), TOBN(0x5652c016, 0xee90bbd1),
+           TOBN(0xeb38636f, 0x87fedb73), TOBN(0x5e32f847, 0x0135a613)},
+          {TOBN(0x0703b312, 0xcf933c83), TOBN(0xd05bb76e, 0x1a7f47e6),
+           TOBN(0x825e4f0c, 0x949c2415), TOBN(0x569e5622, 0x7250d6f8)}},
+         {{TOBN(0xbbe9eb3a, 0x6568013e), TOBN(0x8dbd203f, 0x22f243fc),
+           TOBN(0x9dbd7694, 0xb342734a), TOBN(0x8f6d12f8, 0x46afa984)},
+          {TOBN(0xb98610a2, 0xc9eade29), TOBN(0xbab4f323, 0x47dd0f18),
+           TOBN(0x5779737b, 0x671c0d46), TOBN(0x10b6a7c6, 0xd3e0a42a)}},
+         {{TOBN(0xfb19ddf3, 0x3035b41c), TOBN(0xd336343f, 0x99c45895),
+           TOBN(0x61fe4938, 0x54c857e5), TOBN(0xc4d506be, 0xae4e57d5)},
+          {TOBN(0x3cd8c8cb, 0xbbc33f75), TOBN(0x7281f08a, 0x9262c77d),
+           TOBN(0x083f4ea6, 0xf11a2823), TOBN(0x8895041e, 0x9fba2e33)}},
+         {{TOBN(0xfcdfea49, 0x9c438edf), TOBN(0x7678dcc3, 0x91edba44),
+           TOBN(0xf07b3b87, 0xe2ba50f0), TOBN(0xc13888ef, 0x43948c1b)},
+          {TOBN(0xc2135ad4, 0x1140af42), TOBN(0x8e5104f3, 0x926ed1a7),
+           TOBN(0xf24430cb, 0x88f6695f), TOBN(0x0ce0637b, 0x6d73c120)}},
+         {{TOBN(0xb2db01e6, 0xfe631e8f), TOBN(0x1c5563d7, 0xd7bdd24b),
+           TOBN(0x8daea3ba, 0x369ad44f), TOBN(0x000c81b6, 0x8187a9f9)},
+          {TOBN(0x5f48a951, 0xaae1fd9a), TOBN(0xe35626c7, 0x8d5aed8a),
+           TOBN(0x20952763, 0x0498c622), TOBN(0x76d17634, 0x773aa504)}},
+         {{TOBN(0x36d90dda, 0xeb300f7a), TOBN(0x9dcf7dfc, 0xedb5e801),
+           TOBN(0x645cb268, 0x74d5244c), TOBN(0xa127ee79, 0x348e3aa2)},
+          {TOBN(0x488acc53, 0x575f1dbb), TOBN(0x95037e85, 0x80e6161e),
+           TOBN(0x57e59283, 0x292650d0), TOBN(0xabe67d99, 0x14938216)}},
+         {{TOBN(0x3c7f944b, 0x3f8e1065), TOBN(0xed908cb6, 0x330e8924),
+           TOBN(0x08ee8fd5, 0x6f530136), TOBN(0x2227b7d5, 0xd7ffc169)},
+          {TOBN(0x4f55c893, 0xb5cd6dd5), TOBN(0x82225e11, 0xa62796e8),
+           TOBN(0x5c6cead1, 0xcb18e12c), TOBN(0x4381ae0c, 0x84f5a51a)}},
+         {{TOBN(0x345913d3, 0x7fafa4c8), TOBN(0x3d918082, 0x0491aac0),
+           TOBN(0x9347871f, 0x3e69264c), TOBN(0xbea9dd3c, 0xb4f4f0cd)},
+          {TOBN(0xbda5d067, 0x3eadd3e7), TOBN(0x0033c1b8, 0x0573bcd8),
+           TOBN(0x25589379, 0x5da2486c), TOBN(0xcb89ee5b, 0x86abbee7)}},
+         {{TOBN(0x8fe0a8f3, 0x22532e5d), TOBN(0xb6410ff0, 0x727dfc4c),
+           TOBN(0x619b9d58, 0x226726db), TOBN(0x5ec25669, 0x7a2b2dc7)},
+          {TOBN(0xaf4d2e06, 0x4c3beb01), TOBN(0x852123d0, 0x7acea556),
+           TOBN(0x0e9470fa, 0xf783487a), TOBN(0x75a7ea04, 0x5664b3eb)}},
+         {{TOBN(0x4ad78f35, 0x6798e4ba), TOBN(0x9214e6e5, 0xc7d0e091),
+           TOBN(0xc420b488, 0xb1290403), TOBN(0x64049e0a, 0xfc295749)},
+          {TOBN(0x03ef5af1, 0x3ae9841f), TOBN(0xdbe4ca19, 0xb0b662a6),
+           TOBN(0x46845c5f, 0xfa453458), TOBN(0xf8dabf19, 0x10b66722)}},
+         {{TOBN(0xb650f0aa, 0xcce2793b), TOBN(0x71db851e, 0xc5ec47c1),
+           TOBN(0x3eb78f3e, 0x3b234fa9), TOBN(0xb0c60f35, 0xfc0106ce)},
+          {TOBN(0x05427121, 0x774eadbd), TOBN(0x25367faf, 0xce323863),
+           TOBN(0x7541b5c9, 0xcd086976), TOBN(0x4ff069e2, 0xdc507ad1)}},
+         {{TOBN(0x74145256, 0x8776e667), TOBN(0x6e76142c, 0xb23c6bb5),
+           TOBN(0xdbf30712, 0x1b3a8a87), TOBN(0x60e7363e, 0x98450836)},
+          {TOBN(0x5741450e, 0xb7366d80), TOBN(0xe4ee14ca, 0x4837dbdf),
+           TOBN(0xa765eb9b, 0x69d4316f), TOBN(0x04548dca, 0x8ef43825)}},
+         {{TOBN(0x9c9f4e4c, 0x5ae888eb), TOBN(0x733abb51, 0x56e9ac99),
+           TOBN(0xdaad3c20, 0xba6ac029), TOBN(0x9b8dd3d3, 0x2ba3e38e)},
+          {TOBN(0xa9bb4c92, 0x0bc5d11a), TOBN(0xf20127a7, 0x9c5f88a3),
+           TOBN(0x4f52b06e, 0x161d3cb8), TOBN(0x26c1ff09, 0x6afaf0a6)}},
+         {{TOBN(0x32670d2f, 0x7189e71f), TOBN(0xc6438748, 0x5ecf91e7),
+           TOBN(0x15758e57, 0xdb757a21), TOBN(0x427d09f8, 0x290a9ce5)},
+          {TOBN(0x846a308f, 0x38384a7a), TOBN(0xaac3acb4, 0xb0732b99),
+           TOBN(0x9e941009, 0x17845819), TOBN(0x95cba111, 0xa7ce5e03)}},
+         {{TOBN(0x6f3d4f7f, 0xb00009c4), TOBN(0xb8396c27, 0x8ff28b5f),
+           TOBN(0xb1a9ae43, 0x1c97975d), TOBN(0x9d7ba8af, 0xe5d9fed5)},
+          {TOBN(0x338cf09f, 0x34f485b6), TOBN(0xbc0ddacc, 0x64122516),
+           TOBN(0xa450da12, 0x05d471fe), TOBN(0x4c3a6250, 0x628dd8c9)}},
+         {{TOBN(0x69c7d103, 0xd1295837), TOBN(0xa2893e50, 0x3807eb2f),
+           TOBN(0xd6e1e1de, 0xbdb41491), TOBN(0xc630745b, 0x5e138235)},
+          {TOBN(0xc892109e, 0x48661ae1), TOBN(0x8d17e7eb, 0xea2b2674),
+           TOBN(0x00ec0f87, 0xc328d6b5), TOBN(0x6d858645, 0xf079ff9e)}},
+         {{TOBN(0x6cdf243e, 0x19115ead), TOBN(0x1ce1393e, 0x4bac4fcf),
+           TOBN(0x2c960ed0, 0x9c29f25b), TOBN(0x59be4d8e, 0x9d388a05)},
+          {TOBN(0x0d46e06c, 0xd0def72b), TOBN(0xb923db5d, 0xe0342748),
+           TOBN(0xf7d3aacd, 0x936d4a3d), TOBN(0x558519cc, 0x0b0b099e)}},
+         {{TOBN(0x3ea8ebf8, 0x827097ef), TOBN(0x259353db, 0xd054f55d),
+           TOBN(0x84c89abc, 0x6d2ed089), TOBN(0x5c548b69, 0x8e096a7c)},
+          {TOBN(0xd587f616, 0x994b995d), TOBN(0x4d1531f6, 0xa5845601),
+           TOBN(0x792ab31e, 0x451fd9f0), TOBN(0xc8b57bb2, 0x65adf6ca)}},
+         {{TOBN(0x68440fcb, 0x1cd5ad73), TOBN(0xb9c860e6, 0x6144da4f),
+           TOBN(0x2ab286aa, 0x8462beb8), TOBN(0xcc6b8fff, 0xef46797f)},
+          {TOBN(0xac820da4, 0x20c8a471), TOBN(0x69ae05a1, 0x77ff7faf),
+           TOBN(0xb9163f39, 0xbfb5da77), TOBN(0xbd03e590, 0x2c73ab7a)}},
+         {{TOBN(0x7e862b5e, 0xb2940d9e), TOBN(0x3c663d86, 0x4b9af564),
+           TOBN(0xd8309031, 0xbde3033d), TOBN(0x298231b2, 0xd42c5bc6)},
+          {TOBN(0x42090d2c, 0x552ad093), TOBN(0xa4799d1c, 0xff854695),
+           TOBN(0x0a88b5d6, 0xd31f0d00), TOBN(0xf8b40825, 0xa2f26b46)}},
+         {{TOBN(0xec29b1ed, 0xf1bd7218), TOBN(0xd491c53b, 0x4b24c86e),
+           TOBN(0xd2fe588f, 0x3395ea65), TOBN(0x6f3764f7, 0x4456ef15)},
+          {TOBN(0xdb43116d, 0xcdc34800), TOBN(0xcdbcd456, 0xc1e33955),
+           TOBN(0xefdb5540, 0x74ab286b), TOBN(0x948c7a51, 0xd18c5d7c)}},
+         {{TOBN(0xeb81aa37, 0x7378058e), TOBN(0x41c746a1, 0x04411154),
+           TOBN(0xa10c73bc, 0xfb828ac7), TOBN(0x6439be91, 0x9d972b29)},
+          {TOBN(0x4bf3b4b0, 0x43a2fbad), TOBN(0x39e6dadf, 0x82b5e840),
+           TOBN(0x4f716408, 0x6397bd4c), TOBN(0x0f7de568, 0x7f1eeccb)}},
+         {{TOBN(0x5865c5a1, 0xd2ffbfc1), TOBN(0xf74211fa, 0x4ccb6451),
+           TOBN(0x66368a88, 0xc0b32558), TOBN(0x5b539dc2, 0x9ad7812e)},
+          {TOBN(0x579483d0, 0x2f3af6f6), TOBN(0x52132078, 0x99934ece),
+           TOBN(0x50b9650f, 0xdcc9e983), TOBN(0xca989ec9, 0xaee42b8a)}},
+         {{TOBN(0x6a44c829, 0xd6f62f99), TOBN(0x8f06a309, 0x4c2a7c0c),
+           TOBN(0x4ea2b3a0, 0x98a0cb0a), TOBN(0x5c547b70, 0xbeee8364)},
+          {TOBN(0x461d40e1, 0x682afe11), TOBN(0x9e0fc77a, 0x7b41c0a8),
+           TOBN(0x79e4aefd, 0xe20d5d36), TOBN(0x2916e520, 0x32dd9f63)}},
+         {{TOBN(0xf59e52e8, 0x3f883faf), TOBN(0x396f9639, 0x2b868d35),
+           TOBN(0xc902a9df, 0x4ca19881), TOBN(0x0fc96822, 0xdb2401a6)},
+          {TOBN(0x41237587, 0x66f1c68d), TOBN(0x10fc6de3, 0xfb476c0d),
+           TOBN(0xf8b6b579, 0x841f5d90), TOBN(0x2ba8446c, 0xfa24f44a)}},
+         {{TOBN(0xa237b920, 0xef4a9975), TOBN(0x60bb6004, 0x2330435f),
+           TOBN(0xd6f4ab5a, 0xcfb7e7b5), TOBN(0xb2ac5097, 0x83435391)},
+          {TOBN(0xf036ee2f, 0xb0d1ea67), TOBN(0xae779a6a, 0x74c56230),
+           TOBN(0x59bff8c8, 0xab838ae6), TOBN(0xcd83ca99, 0x9b38e6f0)}},
+         {{TOBN(0xbb27bef5, 0xe33deed3), TOBN(0xe6356f6f, 0x001892a8),
+           TOBN(0xbf3be6cc, 0x7adfbd3e), TOBN(0xaecbc81c, 0x33d1ac9d)},
+          {TOBN(0xe4feb909, 0xe6e861dc), TOBN(0x90a247a4, 0x53f5f801),
+           TOBN(0x01c50acb, 0x27346e57), TOBN(0xce29242e, 0x461acc1b)}},
+         {{TOBN(0x04dd214a, 0x2f998a91), TOBN(0x271ee9b1, 0xd4baf27b),
+           TOBN(0x7e3027d1, 0xe8c26722), TOBN(0x21d1645c, 0x1820dce5)},
+          {TOBN(0x086f242c, 0x7501779c), TOBN(0xf0061407, 0xfa0e8009),
+           TOBN(0xf23ce477, 0x60187129), TOBN(0x05bbdedb, 0x0fde9bd0)}},
+         {{TOBN(0x682f4832, 0x25d98473), TOBN(0xf207fe85, 0x5c658427),
+           TOBN(0xb6fdd7ba, 0x4166ffa1), TOBN(0x0c314056, 0x9eed799d)},
+          {TOBN(0x0db8048f, 0x4107e28f), TOBN(0x74ed3871, 0x41216840),
+           TOBN(0x74489f8f, 0x56a3c06e), TOBN(0x1e1c005b, 0x12777134)}},
+         {{TOBN(0xdb332a73, 0xf37ec3c3), TOBN(0xc65259bd, 0xdd59eba0),
+           TOBN(0x2291709c, 0xdb4d3257), TOBN(0x9a793b25, 0xbd389390)},
+          {TOBN(0xf39fe34b, 0xe43756f0), TOBN(0x2f76bdce, 0x9afb56c9),
+           TOBN(0x9f37867a, 0x61208b27), TOBN(0xea1d4307, 0x089972c3)}},
+         {{TOBN(0x8c595330, 0x8bdf623a), TOBN(0x5f5accda, 0x8441fb7d),
+           TOBN(0xfafa9418, 0x32ddfd95), TOBN(0x6ad40c5a, 0x0fde9be7)},
+          {TOBN(0x43faba89, 0xaeca8709), TOBN(0xc64a7cf1, 0x2c248a9d),
+           TOBN(0x16620252, 0x72637a76), TOBN(0xaee1c791, 0x22b8d1bb)}},
+         {{TOBN(0xf0f798fd, 0x21a843b2), TOBN(0x56e4ed4d, 0x8d005cb1),
+           TOBN(0x355f7780, 0x1f0d8abe), TOBN(0x197b04cf, 0x34522326)},
+          {TOBN(0x41f9b31f, 0xfd42c13f), TOBN(0x5ef7feb2, 0xb40f933d),
+           TOBN(0x27326f42, 0x5d60bad4), TOBN(0x027ecdb2, 0x8c92cf89)}},
+         {{TOBN(0x04aae4d1, 0x4e3352fe), TOBN(0x08414d2f, 0x73591b90),
+           TOBN(0x5ed6124e, 0xb7da7d60), TOBN(0xb985b931, 0x4d13d4ec)},
+          {TOBN(0xa592d3ab, 0x96bf36f9), TOBN(0x012dbed5, 0xbbdf51df),
+           TOBN(0xa57963c0, 0xdf6c177d), TOBN(0x010ec869, 0x87ca29cf)}},
+         {{TOBN(0xba1700f6, 0xbf926dff), TOBN(0x7c9fdbd1, 0xf4bf6bc2),
+           TOBN(0xdc18dc8f, 0x64da11f5), TOBN(0xa6074b7a, 0xd938ae75)},
+          {TOBN(0x14270066, 0xe84f44a4), TOBN(0x99998d38, 0xd27b954e),
+           TOBN(0xc1be8ab2, 0xb4f38e9a), TOBN(0x8bb55bbf, 0x15c01016)}},
+         {{TOBN(0xf73472b4, 0x0ea2ab30), TOBN(0xd365a340, 0xf73d68dd),
+           TOBN(0xc01a7168, 0x19c2e1eb), TOBN(0x32f49e37, 0x34061719)},
+          {TOBN(0xb73c57f1, 0x01d8b4d6), TOBN(0x03c8423c, 0x26b47700),
+           TOBN(0x321d0bc8, 0xa4d8826a), TOBN(0x6004213c, 0x4bc0e638)}},
+         {{TOBN(0xf78c64a1, 0xc1c06681), TOBN(0x16e0a16f, 0xef018e50),
+           TOBN(0x31cbdf91, 0xdb42b2b3), TOBN(0xf8f4ffce, 0xe0d36f58)},
+          {TOBN(0xcdcc71cd, 0x4cc5e3e0), TOBN(0xd55c7cfa, 0xa129e3e0),
+           TOBN(0xccdb6ba0, 0x0fb2cbf1), TOBN(0x6aba0005, 0xc4bce3cb)}},
+         {{TOBN(0x501cdb30, 0xd232cfc4), TOBN(0x9ddcf12e, 0xd58a3cef),
+           TOBN(0x02d2cf9c, 0x87e09149), TOBN(0xdc5d7ec7, 0x2c976257)},
+          {TOBN(0x6447986e, 0x0b50d7dd), TOBN(0x88fdbaf7, 0x807f112a),
+           TOBN(0x58c9822a, 0xb00ae9f6), TOBN(0x6abfb950, 0x6d3d27e0)}},
+         {{TOBN(0xd0a74487, 0x8a429f4f), TOBN(0x0649712b, 0xdb516609),
+           TOBN(0xb826ba57, 0xe769b5df), TOBN(0x82335df2, 0x1fc7aaf2)},
+          {TOBN(0x2389f067, 0x5c93d995), TOBN(0x59ac367a, 0x68677be6),
+           TOBN(0xa77985ff, 0x21d9951b), TOBN(0x038956fb, 0x85011cce)}},
+         {{TOBN(0x608e48cb, 0xbb734e37), TOBN(0xc08c0bf2, 0x2be5b26f),
+           TOBN(0x17bbdd3b, 0xf9b1a0d9), TOBN(0xeac7d898, 0x10483319)},
+          {TOBN(0xc95c4baf, 0xbc1a6dea), TOBN(0xfdd0e2bf, 0x172aafdb),
+           TOBN(0x40373cbc, 0x8235c41a), TOBN(0x14303f21, 0xfb6f41d5)}},
+         {{TOBN(0xba063621, 0x0408f237), TOBN(0xcad3b09a, 0xecd2d1ed),
+           TOBN(0x4667855a, 0x52abb6a2), TOBN(0xba9157dc, 0xaa8b417b)},
+          {TOBN(0xfe7f3507, 0x4f013efb), TOBN(0x1b112c4b, 0xaa38c4a2),
+           TOBN(0xa1406a60, 0x9ba64345), TOBN(0xe53cba33, 0x6993c80b)}},
+         {{TOBN(0x45466063, 0xded40d23), TOBN(0x3d5f1f4d, 0x54908e25),
+           TOBN(0x9ebefe62, 0x403c3c31), TOBN(0x274ea0b5, 0x0672a624)},
+          {TOBN(0xff818d99, 0x451d1b71), TOBN(0x80e82643, 0x8f79cf79),
+           TOBN(0xa165df13, 0x73ce37f5), TOBN(0xa744ef4f, 0xfe3a21fd)}},
+         {{TOBN(0x73f1e7f5, 0xcf551396), TOBN(0xc616898e, 0x868c676b),
+           TOBN(0x671c28c7, 0x8c442c36), TOBN(0xcfe5e558, 0x5e0a317d)},
+          {TOBN(0x1242d818, 0x7051f476), TOBN(0x56fad2a6, 0x14f03442),
+           TOBN(0x262068bc, 0x0a44d0f6), TOBN(0xdfa2cd6e, 0xce6edf4e)}},
+         {{TOBN(0x0f43813a, 0xd15d1517), TOBN(0x61214cb2, 0x377d44f5),
+           TOBN(0xd399aa29, 0xc639b35f), TOBN(0x42136d71, 0x54c51c19)},
+          {TOBN(0x9774711b, 0x08417221), TOBN(0x0a5546b3, 0x52545a57),
+           TOBN(0x80624c41, 0x1150582d), TOBN(0x9ec5c418, 0xfbc555bc)}},
+         {{TOBN(0x2c87dcad, 0x771849f1), TOBN(0xb0c932c5, 0x01d7bf6f),
+           TOBN(0x6aa5cd3e, 0x89116eb2), TOBN(0xd378c25a, 0x51ca7bd3)},
+          {TOBN(0xc612a0da, 0x9e6e3e31), TOBN(0x0417a54d, 0xb68ad5d0),
+           TOBN(0x00451e4a, 0x22c6edb8), TOBN(0x9fbfe019, 0xb42827ce)}},
+         {{TOBN(0x2fa92505, 0xba9384a2), TOBN(0x21b8596e, 0x64ad69c1),
+           TOBN(0x8f4fcc49, 0x983b35a6), TOBN(0xde093760, 0x72754672)},
+          {TOBN(0x2f14ccc8, 0xf7bffe6d), TOBN(0x27566bff, 0x5d94263d),
+           TOBN(0xb5b4e9c6, 0x2df3ec30), TOBN(0x94f1d7d5, 0x3e6ea6ba)}},
+         {{TOBN(0x97b7851a, 0xaaca5e9b), TOBN(0x518aa521, 0x56713b97),
+           TOBN(0x3357e8c7, 0x150a61f6), TOBN(0x7842e7e2, 0xec2c2b69)},
+          {TOBN(0x8dffaf65, 0x6868a548), TOBN(0xd963bd82, 0xe068fc81),
+           TOBN(0x64da5c8b, 0x65917733), TOBN(0x927090ff, 0x7b247328)}}},
+        {{{TOBN(0x214bc9a7, 0xd298c241), TOBN(0xe3b697ba, 0x56807cfd),
+           TOBN(0xef1c7802, 0x4564eadb), TOBN(0xdde8cdcf, 0xb48149c5)},
+          {TOBN(0x946bf0a7, 0x5a4d2604), TOBN(0x27154d7f, 0x6c1538af),
+           TOBN(0x95cc9230, 0xde5b1fcc), TOBN(0xd88519e9, 0x66864f82)}},
+         {{TOBN(0xb828dd1a, 0x7cb1282c), TOBN(0xa08d7626, 0xbe46973a),
+           TOBN(0x6baf8d40, 0xe708d6b2), TOBN(0x72571fa1, 0x4daeb3f3)},
+          {TOBN(0x85b1732f, 0xf22dfd98), TOBN(0x87ab01a7, 0x0087108d),
+           TOBN(0xaaaafea8, 0x5988207a), TOBN(0xccc832f8, 0x69f00755)}},
+         {{TOBN(0x964d950e, 0x36ff3bf0), TOBN(0x8ad20f6f, 0xf0b34638),
+           TOBN(0x4d9177b3, 0xb5d7585f), TOBN(0xcf839760, 0xef3f019f)},
+          {TOBN(0x582fc5b3, 0x8288c545), TOBN(0x2f8e4e9b, 0x13116bd1),
+           TOBN(0xf91e1b2f, 0x332120ef), TOBN(0xcf568724, 0x2a17dd23)}},
+         {{TOBN(0x488f1185, 0xca8d9d1a), TOBN(0xadf2c77d, 0xd987ded2),
+           TOBN(0x5f3039f0, 0x60c46124), TOBN(0xe5d70b75, 0x71e095f4)},
+          {TOBN(0x82d58650, 0x6260e70f), TOBN(0x39d75ea7, 0xf750d105),
+           TOBN(0x8cf3d0b1, 0x75bac364), TOBN(0xf3a7564d, 0x21d01329)}},
+         {{TOBN(0x182f04cd, 0x2f52d2a7), TOBN(0x4fde149a, 0xe2df565a),
+           TOBN(0xb80c5eec, 0xa79fb2f7), TOBN(0xab491d7b, 0x22ddc897)},
+          {TOBN(0x99d76c18, 0xc6312c7f), TOBN(0xca0d5f3d, 0x6aa41a57),
+           TOBN(0x71207325, 0xd15363a0), TOBN(0xe82aa265, 0xbeb252c2)}},
+         {{TOBN(0x94ab4700, 0xec3128c2), TOBN(0x6c76d862, 0x8e383f49),
+           TOBN(0xdc36b150, 0xc03024eb), TOBN(0xfb439477, 0x53daac69)},
+          {TOBN(0xfc68764a, 0x8dc79623), TOBN(0x5b86995d, 0xb440fbb2),
+           TOBN(0xd66879bf, 0xccc5ee0d), TOBN(0x05228942, 0x95aa8bd3)}},
+         {{TOBN(0xb51a40a5, 0x1e6a75c1), TOBN(0x24327c76, 0x0ea7d817),
+           TOBN(0x06630182, 0x07774597), TOBN(0xd6fdbec3, 0x97fa7164)},
+          {TOBN(0x20c99dfb, 0x13c90f48), TOBN(0xd6ac5273, 0x686ef263),
+           TOBN(0xc6a50bdc, 0xfef64eeb), TOBN(0xcd87b281, 0x86fdfc32)}},
+         {{TOBN(0xb24aa43e, 0x3fcd3efc), TOBN(0xdd26c034, 0xb8088e9a),
+           TOBN(0xa5ef4dc9, 0xbd3d46ea), TOBN(0xa2f99d58, 0x8a4c6a6f)},
+          {TOBN(0xddabd355, 0x2f1da46c), TOBN(0x72c3f8ce, 0x1afacdd1),
+           TOBN(0xd90c4eee, 0x92d40578), TOBN(0xd28bb41f, 0xca623b94)}},
+         {{TOBN(0x50fc0711, 0x745edc11), TOBN(0x9dd9ad7d, 0x3dc87558),
+           TOBN(0xce6931fb, 0xb49d1e64), TOBN(0x6c77a0a2, 0xc98bd0f9)},
+          {TOBN(0x62b9a629, 0x6baf7cb1), TOBN(0xcf065f91, 0xccf72d22),
+           TOBN(0x7203cce9, 0x79639071), TOBN(0x09ae4885, 0xf9cb732f)}},
+         {{TOBN(0x5e7c3bec, 0xee8314f3), TOBN(0x1c068aed, 0xdbea298f),
+           TOBN(0x08d381f1, 0x7c80acec), TOBN(0x03b56be8, 0xe330495b)},
+          {TOBN(0xaeffb8f2, 0x9222882d), TOBN(0x95ff38f6, 0xc4af8bf7),
+           TOBN(0x50e32d35, 0x1fc57d8c), TOBN(0x6635be52, 0x17b444f0)}},
+         {{TOBN(0x04d15276, 0xa5177900), TOBN(0x4e1dbb47, 0xf6858752),
+           TOBN(0x5b475622, 0xc615796c), TOBN(0xa6fa0387, 0x691867bf)},
+          {TOBN(0xed7f5d56, 0x2844c6d0), TOBN(0xc633cf9b, 0x03a2477d),
+           TOBN(0xf6be5c40, 0x2d3721d6), TOBN(0xaf312eb7, 0xe9fd68e6)}},
+         {{TOBN(0x242792d2, 0xe7417ce1), TOBN(0xff42bc71, 0x970ee7f5),
+           TOBN(0x1ff4dc6d, 0x5c67a41e), TOBN(0x77709b7b, 0x20882a58)},
+          {TOBN(0x3554731d, 0xbe217f2c), TOBN(0x2af2a8cd, 0x5bb72177),
+           TOBN(0x58eee769, 0x591dd059), TOBN(0xbb2930c9, 0x4bba6477)}},
+         {{TOBN(0x863ee047, 0x7d930cfc), TOBN(0x4c262ad1, 0x396fd1f4),
+           TOBN(0xf4765bc8, 0x039af7e1), TOBN(0x2519834b, 0x5ba104f6)},
+          {TOBN(0x7cd61b4c, 0xd105f961), TOBN(0xa5415da5, 0xd63bca54),
+           TOBN(0x778280a0, 0x88a1f17c), TOBN(0xc4968949, 0x2329512c)}},
+         {{TOBN(0x174a9126, 0xcecdaa7a), TOBN(0xfc8c7e0e, 0x0b13247b),
+           TOBN(0x29c110d2, 0x3484c1c4), TOBN(0xf8eb8757, 0x831dfc3b)},
+          {TOBN(0x022f0212, 0xc0067452), TOBN(0x3f6f69ee, 0x7b9b926c),
+           TOBN(0x09032da0, 0xef42daf4), TOBN(0x79f00ade, 0x83f80de4)}},
+         {{TOBN(0x6210db71, 0x81236c97), TOBN(0x74f7685b, 0x3ee0781f),
+           TOBN(0x4df7da7b, 0xa3e41372), TOBN(0x2aae38b1, 0xb1a1553e)},
+          {TOBN(0x1688e222, 0xf6dd9d1b), TOBN(0x57695448, 0x5b8b6487),
+           TOBN(0x478d2127, 0x4b2edeaa), TOBN(0xb2818fa5, 0x1e85956a)}},
+         {{TOBN(0x1e6addda, 0xf176f2c0), TOBN(0x01ca4604, 0xe2572658),
+           TOBN(0x0a404ded, 0x85342ffb), TOBN(0x8cf60f96, 0x441838d6)},
+          {TOBN(0x9bbc691c, 0xc9071c4a), TOBN(0xfd588744, 0x34442803),
+           TOBN(0x97101c85, 0x809c0d81), TOBN(0xa7fb754c, 0x8c456f7f)}},
+         {{TOBN(0xc95f3c5c, 0xd51805e1), TOBN(0xab4ccd39, 0xb299dca8),
+           TOBN(0x3e03d20b, 0x47eaf500), TOBN(0xfa3165c1, 0xd7b80893)},
+          {TOBN(0x005e8b54, 0xe160e552), TOBN(0xdc4972ba, 0x9019d11f),
+           TOBN(0x21a6972e, 0x0c9a4a7a), TOBN(0xa52c258f, 0x37840fd7)}},
+         {{TOBN(0xf8559ff4, 0xc1e99d81), TOBN(0x08e1a7d6, 0xa3c617c0),
+           TOBN(0xb398fd43, 0x248c6ba7), TOBN(0x6ffedd91, 0xd1283794)},
+          {TOBN(0x8a6a59d2, 0xd629d208), TOBN(0xa9d141d5, 0x3490530e),
+           TOBN(0x42f6fc18, 0x38505989), TOBN(0x09bf250d, 0x479d94ee)}},
+         {{TOBN(0x223ad3b1, 0xb3822790), TOBN(0x6c5926c0, 0x93b8971c),
+           TOBN(0x609efc7e, 0x75f7fa62), TOBN(0x45d66a6d, 0x1ec2d989)},
+          {TOBN(0x4422d663, 0x987d2792), TOBN(0x4a73caad, 0x3eb31d2b),
+           TOBN(0xf06c2ac1, 0xa32cb9e6), TOBN(0xd9445c5f, 0x91aeba84)}},
+         {{TOBN(0x6af7a1d5, 0xaf71013f), TOBN(0xe68216e5, 0x0bedc946),
+           TOBN(0xf4cba30b, 0xd27370a0), TOBN(0x7981afbf, 0x870421cc)},
+          {TOBN(0x02496a67, 0x9449f0e1), TOBN(0x86cfc4be, 0x0a47edae),
+           TOBN(0x3073c936, 0xb1feca22), TOBN(0xf5694612, 0x03f8f8fb)}},
+         {{TOBN(0xd063b723, 0x901515ea), TOBN(0x4c6c77a5, 0x749cf038),
+           TOBN(0x6361e360, 0xab9e5059), TOBN(0x596cf171, 0xa76a37c0)},
+          {TOBN(0x800f53fa, 0x6530ae7a), TOBN(0x0f5e631e, 0x0792a7a6),
+           TOBN(0x5cc29c24, 0xefdb81c9), TOBN(0xa269e868, 0x3f9c40ba)}},
+         {{TOBN(0xec14f9e1, 0x2cb7191e), TOBN(0x78ea1bd8, 0xe5b08ea6),
+           TOBN(0x3c65aa9b, 0x46332bb9), TOBN(0x84cc22b3, 0xbf80ce25)},
+          {TOBN(0x0098e9e9, 0xd49d5bf1), TOBN(0xcd4ec1c6, 0x19087da4),
+           TOBN(0x3c9d07c5, 0xaef6e357), TOBN(0x839a0268, 0x9f8f64b8)}},
+         {{TOBN(0xc5e9eb62, 0xc6d8607f), TOBN(0x759689f5, 0x6aa995e4),
+           TOBN(0x70464669, 0xbbb48317), TOBN(0x921474bf, 0xe402417d)},
+          {TOBN(0xcabe135b, 0x2a354c8c), TOBN(0xd51e52d2, 0x812fa4b5),
+           TOBN(0xec741096, 0x53311fe8), TOBN(0x4f774535, 0xb864514b)}},
+         {{TOBN(0xbcadd671, 0x5bde48f8), TOBN(0xc9703873, 0x2189bc7d),
+           TOBN(0x5d45299e, 0xc709ee8a), TOBN(0xd1287ee2, 0x845aaff8)},
+          {TOBN(0x7d1f8874, 0xdb1dbf1f), TOBN(0xea46588b, 0x990c88d6),
+           TOBN(0x60ba649a, 0x84368313), TOBN(0xd5fdcbce, 0x60d543ae)}},
+         {{TOBN(0x90b46d43, 0x810d5ab0), TOBN(0x6739d8f9, 0x04d7e5cc),
+           TOBN(0x021c1a58, 0x0d337c33), TOBN(0x00a61162, 0x68e67c40)},
+          {TOBN(0x95ef413b, 0x379f0a1f), TOBN(0xfe126605, 0xe9e2ab95),
+           TOBN(0x67578b85, 0x2f5f199c), TOBN(0xf5c00329, 0x2cb84913)}},
+         {{TOBN(0xf7956430, 0x37577dd8), TOBN(0x83b82af4, 0x29c5fe88),
+           TOBN(0x9c1bea26, 0xcdbdc132), TOBN(0x589fa086, 0x9c04339e)},
+          {TOBN(0x033e9538, 0xb13799df), TOBN(0x85fa8b21, 0xd295d034),
+           TOBN(0xdf17f73f, 0xbd9ddcca), TOBN(0xf32bd122, 0xddb66334)}},
+         {{TOBN(0x55ef88a7, 0x858b044c), TOBN(0x1f0d69c2, 0x5aa9e397),
+           TOBN(0x55fd9cc3, 0x40d85559), TOBN(0xc774df72, 0x7785ddb2)},
+          {TOBN(0x5dcce9f6, 0xd3bd2e1c), TOBN(0xeb30da20, 0xa85dfed0),
+           TOBN(0x5ed7f5bb, 0xd3ed09c4), TOBN(0x7d42a35c, 0x82a9c1bd)}},
+         {{TOBN(0xcf3de995, 0x9890272d), TOBN(0x75f3432a, 0x3e713a10),
+           TOBN(0x5e13479f, 0xe28227b8), TOBN(0xb8561ea9, 0xfefacdc8)},
+          {TOBN(0xa6a297a0, 0x8332aafd), TOBN(0x9b0d8bb5, 0x73809b62),
+           TOBN(0xd2fa1cfd, 0x0c63036f), TOBN(0x7a16eb55, 0xbd64bda8)}},
+         {{TOBN(0x3f5cf5f6, 0x78e62ddc), TOBN(0x2267c454, 0x07fd752b),
+           TOBN(0x5e361b6b, 0x5e437bbe), TOBN(0x95c59501, 0x8354e075)},
+          {TOBN(0xec725f85, 0xf2b254d9), TOBN(0x844b617d, 0x2cb52b4e),
+           TOBN(0xed8554f5, 0xcf425fb5), TOBN(0xab67703e, 0x2af9f312)}},
+         {{TOBN(0x4cc34ec1, 0x3cf48283), TOBN(0xb09daa25, 0x9c8a705e),
+           TOBN(0xd1e9d0d0, 0x5b7d4f84), TOBN(0x4df6ef64, 0xdb38929d)},
+          {TOBN(0xe16b0763, 0xaa21ba46), TOBN(0xc6b1d178, 0xa293f8fb),
+           TOBN(0x0ff5b602, 0xd520aabf), TOBN(0x94d671bd, 0xc339397a)}},
+         {{TOBN(0x7c7d98cf, 0x4f5792fa), TOBN(0x7c5e0d67, 0x11215261),
+           TOBN(0x9b19a631, 0xa7c5a6d4), TOBN(0xc8511a62, 0x7a45274d)},
+          {TOBN(0x0c16621c, 0xa5a60d99), TOBN(0xf7fbab88, 0xcf5e48cb),
+           TOBN(0xab1e6ca2, 0xf7ddee08), TOBN(0x83bd08ce, 0xe7867f3c)}},
+         {{TOBN(0xf7e48e8a, 0x2ac13e27), TOBN(0x4494f6df, 0x4eb1a9f5),
+           TOBN(0xedbf84eb, 0x981f0a62), TOBN(0x49badc32, 0x536438f0)},
+          {TOBN(0x50bea541, 0x004f7571), TOBN(0xbac67d10, 0xdf1c94ee),
+           TOBN(0x253d73a1, 0xb727bc31), TOBN(0xb3d01cf2, 0x30686e28)}},
+         {{TOBN(0x51b77b1b, 0x55fd0b8b), TOBN(0xa099d183, 0xfeec3173),
+           TOBN(0x202b1fb7, 0x670e72b7), TOBN(0xadc88b33, 0xa8e1635f)},
+          {TOBN(0x34e8216a, 0xf989d905), TOBN(0xc2e68d20, 0x29b58d01),
+           TOBN(0x11f81c92, 0x6fe55a93), TOBN(0x15f1462a, 0x8f296f40)}},
+         {{TOBN(0x1915d375, 0xea3d62f2), TOBN(0xa17765a3, 0x01c8977d),
+           TOBN(0x7559710a, 0xe47b26f6), TOBN(0xe0bd29c8, 0x535077a5)},
+          {TOBN(0x615f976d, 0x08d84858), TOBN(0x370dfe85, 0x69ced5c1),
+           TOBN(0xbbc7503c, 0xa734fa56), TOBN(0xfbb9f1ec, 0x91ac4574)}},
+         {{TOBN(0x95d7ec53, 0x060dd7ef), TOBN(0xeef2dacd, 0x6e657979),
+           TOBN(0x54511af3, 0xe2a08235), TOBN(0x1e324aa4, 0x1f4aea3d)},
+          {TOBN(0x550e7e71, 0xe6e67671), TOBN(0xbccd5190, 0xbf52faf7),
+           TOBN(0xf880d316, 0x223cc62a), TOBN(0x0d402c7e, 0x2b32eb5d)}},
+         {{TOBN(0xa40bc039, 0x306a5a3b), TOBN(0x4e0a41fd, 0x96783a1b),
+           TOBN(0xa1e8d39a, 0x0253cdd4), TOBN(0x6480be26, 0xc7388638)},
+          {TOBN(0xee365e1d, 0x2285f382), TOBN(0x188d8d8f, 0xec0b5c36),
+           TOBN(0x34ef1a48, 0x1f0f4d82), TOBN(0x1a8f43e1, 0xa487d29a)}},
+         {{TOBN(0x8168226d, 0x77aefb3a), TOBN(0xf69a751e, 0x1e72c253),
+           TOBN(0x8e04359a, 0xe9594df1), TOBN(0x475ffd7d, 0xd14c0467)},
+          {TOBN(0xb5a2c2b1, 0x3844e95c), TOBN(0x85caf647, 0xdd12ef94),
+           TOBN(0x1ecd2a9f, 0xf1063d00), TOBN(0x1dd2e229, 0x23843311)}},
+         {{TOBN(0x38f0e09d, 0x73d17244), TOBN(0x3ede7746, 0x8fc653f1),
+           TOBN(0xae4459f5, 0xdc20e21c), TOBN(0x00db2ffa, 0x6a8599ea)},
+          {TOBN(0x11682c39, 0x30cfd905), TOBN(0x4934d074, 0xa5c112a6),
+           TOBN(0xbdf063c5, 0x568bfe95), TOBN(0x779a440a, 0x016c441a)}},
+         {{TOBN(0x0c23f218, 0x97d6fbdc), TOBN(0xd3a5cd87, 0xe0776aac),
+           TOBN(0xcee37f72, 0xd712e8db), TOBN(0xfb28c70d, 0x26f74e8d)},
+          {TOBN(0xffe0c728, 0xb61301a0), TOBN(0xa6282168, 0xd3724354),
+           TOBN(0x7ff4cb00, 0x768ffedc), TOBN(0xc51b3088, 0x03b02de9)}},
+         {{TOBN(0xa5a8147c, 0x3902dda5), TOBN(0x35d2f706, 0xfe6973b4),
+           TOBN(0x5ac2efcf, 0xc257457e), TOBN(0x933f48d4, 0x8700611b)},
+          {TOBN(0xc365af88, 0x4912beb2), TOBN(0x7f5a4de6, 0x162edf94),
+           TOBN(0xc646ba7c, 0x0c32f34b), TOBN(0x632c6af3, 0xb2091074)}},
+         {{TOBN(0x58d4f2e3, 0x753e43a9), TOBN(0x70e1d217, 0x24d4e23f),
+           TOBN(0xb24bf729, 0xafede6a6), TOBN(0x7f4a94d8, 0x710c8b60)},
+          {TOBN(0xaad90a96, 0x8d4faa6a), TOBN(0xd9ed0b32, 0xb066b690),
+           TOBN(0x52fcd37b, 0x78b6dbfd), TOBN(0x0b64615e, 0x8bd2b431)}},
+         {{TOBN(0x228e2048, 0xcfb9fad5), TOBN(0xbeaa386d, 0x240b76bd),
+           TOBN(0x2d6681c8, 0x90dad7bc), TOBN(0x3e553fc3, 0x06d38f5e)},
+          {TOBN(0xf27cdb9b, 0x9d5f9750), TOBN(0x3e85c52a, 0xd28c5b0e),
+           TOBN(0x190795af, 0x5247c39b), TOBN(0x547831eb, 0xbddd6828)}},
+         {{TOBN(0xf327a227, 0x4a82f424), TOBN(0x36919c78, 0x7e47f89d),
+           TOBN(0xe4783919, 0x43c7392c), TOBN(0xf101b9aa, 0x2316fefe)},
+          {TOBN(0xbcdc9e9c, 0x1c5009d2), TOBN(0xfb55ea13, 0x9cd18345),
+           TOBN(0xf5b5e231, 0xa3ce77c7), TOBN(0xde6b4527, 0xd2f2cb3d)}},
+         {{TOBN(0x10f6a333, 0x9bb26f5f), TOBN(0x1e85db8e, 0x044d85b6),
+           TOBN(0xc3697a08, 0x94197e54), TOBN(0x65e18cc0, 0xa7cb4ea8)},
+          {TOBN(0xa38c4f50, 0xa471fe6e), TOBN(0xf031747a, 0x2f13439c),
+           TOBN(0x53c4a6ba, 0xc007318b), TOBN(0xa8da3ee5, 0x1deccb3d)}},
+         {{TOBN(0x0555b31c, 0x558216b1), TOBN(0x90c7810c, 0x2f79e6c2),
+           TOBN(0x9b669f4d, 0xfe8eed3c), TOBN(0x70398ec8, 0xe0fac126)},
+          {TOBN(0xa96a449e, 0xf701b235), TOBN(0x0ceecdb3, 0xeb94f395),
+           TOBN(0x285fc368, 0xd0cb7431), TOBN(0x0d37bb52, 0x16a18c64)}},
+         {{TOBN(0x05110d38, 0xb880d2dd), TOBN(0xa60f177b, 0x65930d57),
+           TOBN(0x7da34a67, 0xf36235f5), TOBN(0x47f5e17c, 0x183816b9)},
+          {TOBN(0xc7664b57, 0xdb394af4), TOBN(0x39ba215d, 0x7036f789),
+           TOBN(0x46d2ca0e, 0x2f27b472), TOBN(0xc42647ee, 0xf73a84b7)}},
+         {{TOBN(0x44bc7545, 0x64488f1d), TOBN(0xaa922708, 0xf4cf85d5),
+           TOBN(0x721a01d5, 0x53e4df63), TOBN(0x649c0c51, 0x5db46ced)},
+          {TOBN(0x6bf0d64e, 0x3cffcb6c), TOBN(0xe3bf93fe, 0x50f71d96),
+           TOBN(0x75044558, 0xbcc194a0), TOBN(0x16ae3372, 0x6afdc554)}},
+         {{TOBN(0xbfc01adf, 0x5ca48f3f), TOBN(0x64352f06, 0xe22a9b84),
+           TOBN(0xcee54da1, 0xc1099e4a), TOBN(0xbbda54e8, 0xfa1b89c0)},
+          {TOBN(0x166a3df5, 0x6f6e55fb), TOBN(0x1ca44a24, 0x20176f88),
+           TOBN(0x936afd88, 0xdfb7b5ff), TOBN(0xe34c2437, 0x8611d4a0)}},
+         {{TOBN(0x7effbb75, 0x86142103), TOBN(0x6704ba1b, 0x1f34fc4d),
+           TOBN(0x7c2a468f, 0x10c1b122), TOBN(0x36b3a610, 0x8c6aace9)},
+          {TOBN(0xabfcc0a7, 0x75a0d050), TOBN(0x066f9197, 0x3ce33e32),
+           TOBN(0xce905ef4, 0x29fe09be), TOBN(0x89ee25ba, 0xa8376351)}},
+         {{TOBN(0x2a3ede22, 0xfd29dc76), TOBN(0x7fd32ed9, 0x36f17260),
+           TOBN(0x0cadcf68, 0x284b4126), TOBN(0x63422f08, 0xa7951fc8)},
+          {TOBN(0x562b24f4, 0x0807e199), TOBN(0xfe9ce5d1, 0x22ad4490),
+           TOBN(0xc2f51b10, 0x0db2b1b4), TOBN(0xeb3613ff, 0xe4541d0d)}},
+         {{TOBN(0xbd2c4a05, 0x2680813b), TOBN(0x527aa55d, 0x561b08d6),
+           TOBN(0xa9f8a40e, 0xa7205558), TOBN(0xe3eea56f, 0x243d0bec)},
+          {TOBN(0x7b853817, 0xa0ff58b3), TOBN(0xb67d3f65, 0x1a69e627),
+           TOBN(0x0b76bbb9, 0xa869b5d6), TOBN(0xa3afeb82, 0x546723ed)}},
+         {{TOBN(0x5f24416d, 0x3e554892), TOBN(0x8413b53d, 0x430e2a45),
+           TOBN(0x99c56aee, 0x9032a2a0), TOBN(0x09432bf6, 0xeec367b1)},
+          {TOBN(0x552850c6, 0xdaf0ecc1), TOBN(0x49ebce55, 0x5bc92048),
+           TOBN(0xdfb66ba6, 0x54811307), TOBN(0x1b84f797, 0x6f298597)}},
+         {{TOBN(0x79590481, 0x8d1d7a0d), TOBN(0xd9fabe03, 0x3a6fa556),
+           TOBN(0xa40f9c59, 0xba9e5d35), TOBN(0xcb1771c1, 0xf6247577)},
+          {TOBN(0x542a47ca, 0xe9a6312b), TOBN(0xa34b3560, 0x552dd8c5),
+           TOBN(0xfdf94de0, 0x0d794716), TOBN(0xd46124a9, 0x9c623094)}},
+         {{TOBN(0x56b7435d, 0x68afe8b4), TOBN(0x27f20540, 0x6c0d8ea1),
+           TOBN(0x12b77e14, 0x73186898), TOBN(0xdbc3dd46, 0x7479490f)},
+          {TOBN(0x951a9842, 0xc03b0c05), TOBN(0x8b1b3bb3, 0x7921bc96),
+           TOBN(0xa573b346, 0x2b202e0a), TOBN(0x77e4665d, 0x47254d56)}},
+         {{TOBN(0x08b70dfc, 0xd23e3984), TOBN(0xab86e8bc, 0xebd14236),
+           TOBN(0xaa3e07f8, 0x57114ba7), TOBN(0x5ac71689, 0xab0ef4f2)},
+          {TOBN(0x88fca384, 0x0139d9af), TOBN(0x72733f88, 0x76644af0),
+           TOBN(0xf122f72a, 0x65d74f4a), TOBN(0x13931577, 0xa5626c7a)}},
+         {{TOBN(0xd5b5d9eb, 0x70f8d5a4), TOBN(0x375adde7, 0xd7bbb228),
+           TOBN(0x31e88b86, 0x0c1c0b32), TOBN(0xd1f568c4, 0x173edbaa)},
+          {TOBN(0x1592fc83, 0x5459df02), TOBN(0x2beac0fb, 0x0fcd9a7e),
+           TOBN(0xb0a6fdb8, 0x1b473b0a), TOBN(0xe3224c6f, 0x0fe8fc48)}},
+         {{TOBN(0x680bd00e, 0xe87edf5b), TOBN(0x30385f02, 0x20e77cf5),
+           TOBN(0xe9ab98c0, 0x4d42d1b2), TOBN(0x72d191d2, 0xd3816d77)},
+          {TOBN(0x1564daca, 0x0917d9e5), TOBN(0x394eab59, 0x1f8fed7f),
+           TOBN(0xa209aa8d, 0x7fbb3896), TOBN(0x5564f3b9, 0xbe6ac98e)}},
+         {{TOBN(0xead21d05, 0xd73654ef), TOBN(0x68d1a9c4, 0x13d78d74),
+           TOBN(0x61e01708, 0x6d4973a0), TOBN(0x83da3500, 0x46e6d32a)},
+          {TOBN(0x6a3dfca4, 0x68ae0118), TOBN(0xa1b9a4c9, 0xd02da069),
+           TOBN(0x0b2ff9c7, 0xebab8302), TOBN(0x98af07c3, 0x944ba436)}},
+         {{TOBN(0x85997326, 0x995f0f9f), TOBN(0x467fade0, 0x71b58bc6),
+           TOBN(0x47e4495a, 0xbd625a2b), TOBN(0xfdd2d01d, 0x33c3b8cd)},
+          {TOBN(0x2c38ae28, 0xc693f9fa), TOBN(0x48622329, 0x348f7999),
+           TOBN(0x97bf738e, 0x2161f583), TOBN(0x15ee2fa7, 0x565e8cc9)}},
+         {{TOBN(0xa1a5c845, 0x5777e189), TOBN(0xcc10bee0, 0x456f2829),
+           TOBN(0x8ad95c56, 0xda762bd5), TOBN(0x152e2214, 0xe9d91da8)},
+          {TOBN(0x975b0e72, 0x7cb23c74), TOBN(0xfd5d7670, 0xa90c66df),
+           TOBN(0xb5b5b8ad, 0x225ffc53), TOBN(0xab6dff73, 0xfaded2ae)}},
+         {{TOBN(0xebd56781, 0x6f4cbe9d), TOBN(0x0ed8b249, 0x6a574bd7),
+           TOBN(0x41c246fe, 0x81a881fa), TOBN(0x91564805, 0xc3db9c70)},
+          {TOBN(0xd7c12b08, 0x5b862809), TOBN(0x1facd1f1, 0x55858d7b),
+           TOBN(0x7693747c, 0xaf09e92a), TOBN(0x3b69dcba, 0x189a425f)}},
+         {{TOBN(0x0be28e9f, 0x967365ef), TOBN(0x57300eb2, 0xe801f5c9),
+           TOBN(0x93b8ac6a, 0xd583352f), TOBN(0xa2cf1f89, 0xcd05b2b7)},
+          {TOBN(0x7c0c9b74, 0x4dcc40cc), TOBN(0xfee38c45, 0xada523fb),
+           TOBN(0xb49a4dec, 0x1099cc4d), TOBN(0x325c377f, 0x69f069c6)}},
+         {{TOBN(0xe12458ce, 0x476cc9ff), TOBN(0x580e0b6c, 0xc6d4cb63),
+           TOBN(0xd561c8b7, 0x9072289b), TOBN(0x0377f264, 0xa619e6da)},
+          {TOBN(0x26685362, 0x88e591a5), TOBN(0xa453a7bd, 0x7523ca2b),
+           TOBN(0x8a9536d2, 0xc1df4533), TOBN(0xc8e50f2f, 0xbe972f79)}},
+         {{TOBN(0xd433e50f, 0x6d3549cf), TOBN(0x6f33696f, 0xfacd665e),
+           TOBN(0x695bfdac, 0xce11fcb4), TOBN(0x810ee252, 0xaf7c9860)},
+          {TOBN(0x65450fe1, 0x7159bb2c), TOBN(0xf7dfbebe, 0x758b357b),
+           TOBN(0x2b057e74, 0xd69fea72), TOBN(0xd485717a, 0x92731745)}}},
+        {{{TOBN(0x896c42e8, 0xee36860c), TOBN(0xdaf04dfd, 0x4113c22d),
+           TOBN(0x1adbb7b7, 0x44104213), TOBN(0xe5fd5fa1, 0x1fd394ea)},
+          {TOBN(0x68235d94, 0x1a4e0551), TOBN(0x6772cfbe, 0x18d10151),
+           TOBN(0x276071e3, 0x09984523), TOBN(0xe4e879de, 0x5a56ba98)}},
+         {{TOBN(0xaaafafb0, 0x285b9491), TOBN(0x01a0be88, 0x1e4c705e),
+           TOBN(0xff1d4f5d, 0x2ad9caab), TOBN(0x6e349a4a, 0xc37a233f)},
+          {TOBN(0xcf1c1246, 0x4a1c6a16), TOBN(0xd99e6b66, 0x29383260),
+           TOBN(0xea3d4366, 0x5f6d5471), TOBN(0x36974d04, 0xff8cc89b)}},
+         {{TOBN(0xc26c49a1, 0xcfe89d80), TOBN(0xb42c026d, 0xda9c8371),
+           TOBN(0xca6c013a, 0xdad066d2), TOBN(0xfb8f7228, 0x56a4f3ee)},
+          {TOBN(0x08b579ec, 0xd850935b), TOBN(0x34c1a74c, 0xd631e1b3),
+           TOBN(0xcb5fe596, 0xac198534), TOBN(0x39ff21f6, 0xe1f24f25)}},
+         {{TOBN(0x27f29e14, 0x8f929057), TOBN(0x7a64ae06, 0xc0c853df),
+           TOBN(0x256cd183, 0x58e9c5ce), TOBN(0x9d9cce82, 0xded092a5)},
+          {TOBN(0xcc6e5979, 0x6e93b7c7), TOBN(0xe1e47092, 0x31bb9e27),
+           TOBN(0xb70b3083, 0xaa9e29a0), TOBN(0xbf181a75, 0x3785e644)}},
+         {{TOBN(0xf53f2c65, 0x8ead09f7), TOBN(0x1335e1d5, 0x9780d14d),
+           TOBN(0x69cc20e0, 0xcd1b66bc), TOBN(0x9b670a37, 0xbbe0bfc8)},
+          {TOBN(0xce53dc81, 0x28efbeed), TOBN(0x0c74e77c, 0x8326a6e5),
+           TOBN(0x3604e0d2, 0xb88e9a63), TOBN(0xbab38fca, 0x13dc2248)}},
+         {{TOBN(0x8ed6e8c8, 0x5c0a3f1e), TOBN(0xbcad2492, 0x7c87c37f),
+           TOBN(0xfdfb62bb, 0x9ee3b78d), TOBN(0xeba8e477, 0xcbceba46)},
+          {TOBN(0x37d38cb0, 0xeeaede4b), TOBN(0x0bc498e8, 0x7976deb6),
+           TOBN(0xb2944c04, 0x6b6147fb), TOBN(0x8b123f35, 0xf71f9609)}},
+         {{TOBN(0xa155dcc7, 0xde79dc24), TOBN(0xf1168a32, 0x558f69cd),
+           TOBN(0xbac21595, 0x0d1850df), TOBN(0x15c8295b, 0xb204c848)},
+          {TOBN(0xf661aa36, 0x7d8184ff), TOBN(0xc396228e, 0x30447bdb),
+           TOBN(0x11cd5143, 0xbde4a59e), TOBN(0xe3a26e3b, 0x6beab5e6)}},
+         {{TOBN(0xd3b3a13f, 0x1402b9d0), TOBN(0x573441c3, 0x2c7bc863),
+           TOBN(0x4b301ec4, 0x578c3e6e), TOBN(0xc26fc9c4, 0x0adaf57e)},
+          {TOBN(0x96e71bfd, 0x7493cea3), TOBN(0xd05d4b3f, 0x1af81456),
+           TOBN(0xdaca2a8a, 0x6a8c608f), TOBN(0x53ef07f6, 0x0725b276)}},
+         {{TOBN(0x07a5fbd2, 0x7824fc56), TOBN(0x34675218, 0x13289077),
+           TOBN(0x5bf69fd5, 0xe0c48349), TOBN(0xa613ddd3, 0xb6aa7875)},
+          {TOBN(0x7f78c19c, 0x5450d866), TOBN(0x46f4409c, 0x8f84a481),
+           TOBN(0x9f1d1928, 0x90fce239), TOBN(0x016c4168, 0xb2ce44b9)}},
+         {{TOBN(0xbae023f0, 0xc7435978), TOBN(0xb152c888, 0x20e30e19),
+           TOBN(0x9c241645, 0xe3fa6faf), TOBN(0x735d95c1, 0x84823e60)},
+          {TOBN(0x03197573, 0x03955317), TOBN(0x0b4b02a9, 0xf03b4995),
+           TOBN(0x076bf559, 0x70274600), TOBN(0x32c5cc53, 0xaaf57508)}},
+         {{TOBN(0xe8af6d1f, 0x60624129), TOBN(0xb7bc5d64, 0x9a5e2b5e),
+           TOBN(0x3814b048, 0x5f082d72), TOBN(0x76f267f2, 0xce19677a)},
+          {TOBN(0x626c630f, 0xb36eed93), TOBN(0x55230cd7, 0x3bf56803),
+           TOBN(0x78837949, 0xce2736a0), TOBN(0x0d792d60, 0xaa6c55f1)}},
+         {{TOBN(0x0318dbfd, 0xd5c7c5d2), TOBN(0xb38f8da7, 0x072b342d),
+           TOBN(0x3569bddc, 0x7b8de38a), TOBN(0xf25b5887, 0xa1c94842)},
+          {TOBN(0xb2d5b284, 0x2946ad60), TOBN(0x854f29ad, 0xe9d1707e),
+           TOBN(0xaa5159dc, 0x2c6a4509), TOBN(0x899f94c0, 0x57189837)}},
+         {{TOBN(0xcf6adc51, 0xf4a55b03), TOBN(0x261762de, 0x35e3b2d5),
+           TOBN(0x4cc43012, 0x04827b51), TOBN(0xcd22a113, 0xc6021442)},
+          {TOBN(0xce2fd61a, 0x247c9569), TOBN(0x59a50973, 0xd152beca),
+           TOBN(0x6c835a11, 0x63a716d4), TOBN(0xc26455ed, 0x187dedcf)}},
+         {{TOBN(0x27f536e0, 0x49ce89e7), TOBN(0x18908539, 0xcc890cb5),
+           TOBN(0x308909ab, 0xd83c2aa1), TOBN(0xecd3142b, 0x1ab73bd3)},
+          {TOBN(0x6a85bf59, 0xb3f5ab84), TOBN(0x3c320a68, 0xf2bea4c6),
+           TOBN(0xad8dc538, 0x6da4541f), TOBN(0xeaf34eb0, 0xb7c41186)}},
+         {{TOBN(0x1c780129, 0x977c97c4), TOBN(0x5ff9beeb, 0xc57eb9fa),
+           TOBN(0xa24d0524, 0xc822c478), TOBN(0xfd8eec2a, 0x461cd415)},
+          {TOBN(0xfbde194e, 0xf027458c), TOBN(0xb4ff5319, 0x1d1be115),
+           TOBN(0x63f874d9, 0x4866d6f4), TOBN(0x35c75015, 0xb21ad0c9)}},
+         {{TOBN(0xa6b5c9d6, 0x46ac49d2), TOBN(0x42c77c0b, 0x83137aa9),
+           TOBN(0x24d000fc, 0x68225a38), TOBN(0x0f63cfc8, 0x2fe1e907)},
+          {TOBN(0x22d1b01b, 0xc6441f95), TOBN(0x7d38f719, 0xec8e448f),
+           TOBN(0x9b33fa5f, 0x787fb1ba), TOBN(0x94dcfda1, 0x190158df)}},
+         {{TOBN(0xc47cb339, 0x5f6d4a09), TOBN(0x6b4f355c, 0xee52b826),
+           TOBN(0x3d100f5d, 0xf51b930a), TOBN(0xf4512fac, 0x9f668f69)},
+          {TOBN(0x546781d5, 0x206c4c74), TOBN(0xd021d4d4, 0xcb4d2e48),
+           TOBN(0x494a54c2, 0xca085c2d), TOBN(0xf1dbaca4, 0x520850a8)}},
+         {{TOBN(0x63c79326, 0x490a1aca), TOBN(0xcb64dd9c, 0x41526b02),
+           TOBN(0xbb772591, 0xa2979258), TOBN(0x3f582970, 0x48d97846)},
+          {TOBN(0xd66b70d1, 0x7c213ba7), TOBN(0xc28febb5, 0xe8a0ced4),
+           TOBN(0x6b911831, 0xc10338c1), TOBN(0x0d54e389, 0xbf0126f3)}},
+         {{TOBN(0x7048d460, 0x4af206ee), TOBN(0x786c88f6, 0x77e97cb9),
+           TOBN(0xd4375ae1, 0xac64802e), TOBN(0x469bcfe1, 0xd53ec11c)},
+          {TOBN(0xfc9b340d, 0x47062230), TOBN(0xe743bb57, 0xc5b4a3ac),
+           TOBN(0xfe00b4aa, 0x59ef45ac), TOBN(0x29a4ef23, 0x59edf188)}},
+         {{TOBN(0x40242efe, 0xb483689b), TOBN(0x2575d3f6, 0x513ac262),
+           TOBN(0xf30037c8, 0x0ca6db72), TOBN(0xc9fcce82, 0x98864be2)},
+          {TOBN(0x84a112ff, 0x0149362d), TOBN(0x95e57582, 0x1c4ae971),
+           TOBN(0x1fa4b1a8, 0x945cf86c), TOBN(0x4525a734, 0x0b024a2f)}},
+         {{TOBN(0xe76c8b62, 0x8f338360), TOBN(0x483ff593, 0x28edf32b),
+           TOBN(0x67e8e90a, 0x298b1aec), TOBN(0x9caab338, 0x736d9a21)},
+          {TOBN(0x5c09d2fd, 0x66892709), TOBN(0x2496b4dc, 0xb55a1d41),
+           TOBN(0x93f5fb1a, 0xe24a4394), TOBN(0x08c75049, 0x6fa8f6c1)}},
+         {{TOBN(0xcaead1c2, 0xc905d85f), TOBN(0xe9d7f790, 0x0733ae57),
+           TOBN(0x24c9a65c, 0xf07cdd94), TOBN(0x7389359c, 0xa4b55931)},
+          {TOBN(0xf58709b7, 0x367e45f7), TOBN(0x1f203067, 0xcb7e7adc),
+           TOBN(0x82444bff, 0xc7b72818), TOBN(0x07303b35, 0xbaac8033)}},
+         {{TOBN(0x1e1ee4e4, 0xd13b7ea1), TOBN(0xe6489b24, 0xe0e74180),
+           TOBN(0xa5f2c610, 0x7e70ef70), TOBN(0xa1655412, 0xbdd10894)},
+          {TOBN(0x555ebefb, 0x7af4194e), TOBN(0x533c1c3c, 0x8e89bd9c),
+           TOBN(0x735b9b57, 0x89895856), TOBN(0x15fb3cd2, 0x567f5c15)}},
+         {{TOBN(0x057fed45, 0x526f09fd), TOBN(0xe8a4f10c, 0x8128240a),
+           TOBN(0x9332efc4, 0xff2bfd8d), TOBN(0x214e77a0, 0xbd35aa31)},
+          {TOBN(0x32896d73, 0x14faa40e), TOBN(0x767867ec, 0x01e5f186),
+           TOBN(0xc9adf8f1, 0x17a1813e), TOBN(0xcb6cda78, 0x54741795)}},
+         {{TOBN(0xb7521b6d, 0x349d51aa), TOBN(0xf56b5a9e, 0xe3c7b8e9),
+           TOBN(0xc6f1e5c9, 0x32a096df), TOBN(0x083667c4, 0xa3635024)},
+          {TOBN(0x365ea135, 0x18087f2f), TOBN(0xf1b8eaac, 0xd136e45d),
+           TOBN(0xc8a0e484, 0x73aec989), TOBN(0xd75a324b, 0x142c9259)}},
+         {{TOBN(0xb7b4d001, 0x01dae185), TOBN(0x45434e0b, 0x9b7a94bc),
+           TOBN(0xf54339af, 0xfbd8cb0b), TOBN(0xdcc4569e, 0xe98ef49e)},
+          {TOBN(0x7789318a, 0x09a51299), TOBN(0x81b4d206, 0xb2b025d8),
+           TOBN(0xf64aa418, 0xfae85792), TOBN(0x3e50258f, 0xacd7baf7)}},
+         {{TOBN(0xdce84cdb, 0x2996864b), TOBN(0xa2e67089, 0x1f485fa4),
+           TOBN(0xb28b2bb6, 0x534c6a5a), TOBN(0x31a7ec6b, 0xc94b9d39)},
+          {TOBN(0x1d217766, 0xd6bc20da), TOBN(0x4acdb5ec, 0x86761190),
+           TOBN(0x68726328, 0x73701063), TOBN(0x4d24ee7c, 0x2128c29b)}},
+         {{TOBN(0xc072ebd3, 0xa19fd868), TOBN(0x612e481c, 0xdb8ddd3b),
+           TOBN(0xb4e1d754, 0x1a64d852), TOBN(0x00ef95ac, 0xc4c6c4ab)},
+          {TOBN(0x1536d2ed, 0xaa0a6c46), TOBN(0x61294086, 0x43774790),
+           TOBN(0x54af25e8, 0x343fda10), TOBN(0x9ff9d98d, 0xfd25d6f2)}},
+         {{TOBN(0x0746af7c, 0x468b8835), TOBN(0x977a31cb, 0x730ecea7),
+           TOBN(0xa5096b80, 0xc2cf4a81), TOBN(0xaa986833, 0x6458c37a)},
+          {TOBN(0x6af29bf3, 0xa6bd9d34), TOBN(0x6a62fe9b, 0x33c5d854),
+           TOBN(0x50e6c304, 0xb7133b5e), TOBN(0x04b60159, 0x7d6e6848)}},
+         {{TOBN(0x4cd296df, 0x5579bea4), TOBN(0x10e35ac8, 0x5ceedaf1),
+           TOBN(0x04c4c5fd, 0xe3bcc5b1), TOBN(0x95f9ee8a, 0x89412cf9)},
+          {TOBN(0x2c9459ee, 0x82b6eb0f), TOBN(0x2e845765, 0x95c2aadd),
+           TOBN(0x774a84ae, 0xd327fcfe), TOBN(0xd8c93722, 0x0368d476)}},
+         {{TOBN(0x0dbd5748, 0xf83e8a3b), TOBN(0xa579aa96, 0x8d2495f3),
+           TOBN(0x535996a0, 0xae496e9b), TOBN(0x07afbfe9, 0xb7f9bcc2)},
+          {TOBN(0x3ac1dc6d, 0x5b7bd293), TOBN(0x3b592cff, 0x7022323d),
+           TOBN(0xba0deb98, 0x9c0a3e76), TOBN(0x18e78e9f, 0x4b197acb)}},
+         {{TOBN(0x211cde10, 0x296c36ef), TOBN(0x7ee89672, 0x82c4da77),
+           TOBN(0xb617d270, 0xa57836da), TOBN(0xf0cd9c31, 0x9cb7560b)},
+          {TOBN(0x01fdcbf7, 0xe455fe90), TOBN(0x3fb53cbb, 0x7e7334f3),
+           TOBN(0x781e2ea4, 0x4e7de4ec), TOBN(0x8adab3ad, 0x0b384fd0)}},
+         {{TOBN(0x129eee2f, 0x53d64829), TOBN(0x7a471e17, 0xa261492b),
+           TOBN(0xe4f9adb9, 0xe4cb4a2c), TOBN(0x3d359f6f, 0x97ba2c2d)},
+          {TOBN(0x346c6786, 0x0aacd697), TOBN(0x92b444c3, 0x75c2f8a8),
+           TOBN(0xc79fa117, 0xd85df44e), TOBN(0x56782372, 0x398ddf31)}},
+         {{TOBN(0x60e690f2, 0xbbbab3b8), TOBN(0x4851f8ae, 0x8b04816b),
+           TOBN(0xc72046ab, 0x9c92e4d2), TOBN(0x518c74a1, 0x7cf3136b)},
+          {TOBN(0xff4eb50a, 0xf9877d4c), TOBN(0x14578d90, 0xa919cabb),
+           TOBN(0x8218f8c4, 0xac5eb2b6), TOBN(0xa3ccc547, 0x542016e4)}},
+         {{TOBN(0x025bf48e, 0x327f8349), TOBN(0xf3e97346, 0xf43cb641),
+           TOBN(0xdc2bafdf, 0x500f1085), TOBN(0x57167876, 0x2f063055)},
+          {TOBN(0x5bd914b9, 0x411925a6), TOBN(0x7c078d48, 0xa1123de5),
+           TOBN(0xee6bf835, 0x182b165d), TOBN(0xb11b5e5b, 0xba519727)}},
+         {{TOBN(0xe33ea76c, 0x1eea7b85), TOBN(0x2352b461, 0x92d4f85e),
+           TOBN(0xf101d334, 0xafe115bb), TOBN(0xfabc1294, 0x889175a3)},
+          {TOBN(0x7f6bcdc0, 0x5233f925), TOBN(0xe0a802db, 0xe77fec55),
+           TOBN(0xbdb47b75, 0x8069b659), TOBN(0x1c5e12de, 0xf98fbd74)}},
+         {{TOBN(0x869c58c6, 0x4b8457ee), TOBN(0xa5360f69, 0x4f7ea9f7),
+           TOBN(0xe576c09f, 0xf460b38f), TOBN(0x6b70d548, 0x22b7fb36)},
+          {TOBN(0x3fd237f1, 0x3bfae315), TOBN(0x33797852, 0xcbdff369),
+           TOBN(0x97df25f5, 0x25b516f9), TOBN(0x46f388f2, 0xba38ad2d)}},
+         {{TOBN(0x656c4658, 0x89d8ddbb), TOBN(0x8830b26e, 0x70f38ee8),
+           TOBN(0x4320fd5c, 0xde1212b0), TOBN(0xc34f30cf, 0xe4a2edb2)},
+          {TOBN(0xabb131a3, 0x56ab64b8), TOBN(0x7f77f0cc, 0xd99c5d26),
+           TOBN(0x66856a37, 0xbf981d94), TOBN(0x19e76d09, 0x738bd76e)}},
+         {{TOBN(0xe76c8ac3, 0x96238f39), TOBN(0xc0a482be, 0xa830b366),
+           TOBN(0xb7b8eaff, 0x0b4eb499), TOBN(0x8ecd83bc, 0x4bfb4865)},
+          {TOBN(0x971b2cb7, 0xa2f3776f), TOBN(0xb42176a4, 0xf4b88adf),
+           TOBN(0xb9617df5, 0xbe1fa446), TOBN(0x8b32d508, 0xcd031bd2)}},
+         {{TOBN(0x1c6bd47d, 0x53b618c0), TOBN(0xc424f46c, 0x6a227923),
+           TOBN(0x7303ffde, 0xdd92d964), TOBN(0xe9712878, 0x71b5abf2)},
+          {TOBN(0x8f48a632, 0xf815561d), TOBN(0x85f48ff5, 0xd3c055d1),
+           TOBN(0x222a1427, 0x7525684f), TOBN(0xd0d841a0, 0x67360cc3)}},
+         {{TOBN(0x4245a926, 0x0b9267c6), TOBN(0xc78913f1, 0xcf07f863),
+           TOBN(0xaa844c8e, 0x4d0d9e24), TOBN(0xa42ad522, 0x3d5f9017)},
+          {TOBN(0xbd371749, 0xa2c989d5), TOBN(0x928292df, 0xe1f5e78e),
+           TOBN(0x493b383e, 0x0a1ea6da), TOBN(0x5136fd8d, 0x13aee529)}},
+         {{TOBN(0x860c44b1, 0xf2c34a99), TOBN(0x3b00aca4, 0xbf5855ac),
+           TOBN(0xabf6aaa0, 0xfaaf37be), TOBN(0x65f43682, 0x2a53ec08)},
+          {TOBN(0x1d9a5801, 0xa11b12e1), TOBN(0x78a7ab2c, 0xe20ed475),
+           TOBN(0x0de1067e, 0x9a41e0d5), TOBN(0x30473f5f, 0x305023ea)}},
+         {{TOBN(0xdd3ae09d, 0x169c7d97), TOBN(0x5cd5baa4, 0xcfaef9cd),
+           TOBN(0x5cd7440b, 0x65a44803), TOBN(0xdc13966a, 0x47f364de)},
+          {TOBN(0x077b2be8, 0x2b8357c1), TOBN(0x0cb1b4c5, 0xe9d57c2a),
+           TOBN(0x7a4ceb32, 0x05ff363e), TOBN(0xf310fa4d, 0xca35a9ef)}},
+         {{TOBN(0xdbb7b352, 0xf97f68c6), TOBN(0x0c773b50, 0x0b02cf58),
+           TOBN(0xea2e4821, 0x3c1f96d9), TOBN(0xffb357b0, 0xeee01815)},
+          {TOBN(0xb9c924cd, 0xe0f28039), TOBN(0x0b36c95a, 0x46a3fbe4),
+           TOBN(0x1faaaea4, 0x5e46db6c), TOBN(0xcae575c3, 0x1928aaff)}},
+         {{TOBN(0x7f671302, 0xa70dab86), TOBN(0xfcbd12a9, 0x71c58cfc),
+           TOBN(0xcbef9acf, 0xbee0cb92), TOBN(0x573da0b9, 0xf8c1b583)},
+          {TOBN(0x4752fcfe, 0x0d41d550), TOBN(0xe7eec0e3, 0x2155cffe),
+           TOBN(0x0fc39fcb, 0x545ae248), TOBN(0x522cb8d1, 0x8065f44e)}},
+         {{TOBN(0x263c962a, 0x70cbb96c), TOBN(0xe034362a, 0xbcd124a9),
+           TOBN(0xf120db28, 0x3c2ae58d), TOBN(0xb9a38d49, 0xfef6d507)},
+          {TOBN(0xb1fd2a82, 0x1ff140fd), TOBN(0xbd162f30, 0x20aee7e0),
+           TOBN(0x4e17a5d4, 0xcb251949), TOBN(0x2aebcb83, 0x4f7e1c3d)}},
+         {{TOBN(0x608eb25f, 0x937b0527), TOBN(0xf42e1e47, 0xeb7d9997),
+           TOBN(0xeba699c4, 0xb8a53a29), TOBN(0x1f921c71, 0xe091b536)},
+          {TOBN(0xcce29e7b, 0x5b26bbd5), TOBN(0x7a8ef5ed, 0x3b61a680),
+           TOBN(0xe5ef8043, 0xba1f1c7e), TOBN(0x16ea8217, 0x18158dda)}},
+         {{TOBN(0x01778a2b, 0x599ff0f9), TOBN(0x68a923d7, 0x8104fc6b),
+           TOBN(0x5bfa44df, 0xda694ff3), TOBN(0x4f7199db, 0xf7667f12)},
+          {TOBN(0xc06d8ff6, 0xe46f2a79), TOBN(0x08b5dead, 0xe9f8131d),
+           TOBN(0x02519a59, 0xabb4ce7c), TOBN(0xc4f710bc, 0xb42aec3e)}},
+         {{TOBN(0x3d77b057, 0x78bde41a), TOBN(0x6474bf80, 0xb4186b5a),
+           TOBN(0x048b3f67, 0x88c65741), TOBN(0xc64519de, 0x03c7c154)},
+          {TOBN(0xdf073846, 0x0edfcc4f), TOBN(0x319aa737, 0x48f1aa6b),
+           TOBN(0x8b9f8a02, 0xca909f77), TOBN(0x90258139, 0x7580bfef)}},
+         {{TOBN(0xd8bfd3ca, 0xc0c22719), TOBN(0xc60209e4, 0xc9ca151e),
+           TOBN(0x7a744ab5, 0xd9a1a69c), TOBN(0x6de5048b, 0x14937f8f)},
+          {TOBN(0x171938d8, 0xe115ac04), TOBN(0x7df70940, 0x1c6b16d2),
+           TOBN(0xa6aeb663, 0x7f8e94e7), TOBN(0xc130388e, 0x2a2cf094)}},
+         {{TOBN(0x1850be84, 0x77f54e6e), TOBN(0x9f258a72, 0x65d60fe5),
+           TOBN(0xff7ff0c0, 0x6c9146d6), TOBN(0x039aaf90, 0xe63a830b)},
+          {TOBN(0x38f27a73, 0x9460342f), TOBN(0x4703148c, 0x3f795f8a),
+           TOBN(0x1bb5467b, 0x9681a97e), TOBN(0x00931ba5, 0xecaeb594)}},
+         {{TOBN(0xcdb6719d, 0x786f337c), TOBN(0xd9c01cd2, 0xe704397d),
+           TOBN(0x0f4a3f20, 0x555c2fef), TOBN(0x00452509, 0x7c0af223)},
+          {TOBN(0x54a58047, 0x84db8e76), TOBN(0x3bacf1aa, 0x93c8aa06),
+           TOBN(0x11ca957c, 0xf7919422), TOBN(0x50641053, 0x78cdaa40)}},
+         {{TOBN(0x7a303874, 0x9f7144ae), TOBN(0x170c963f, 0x43d4acfd),
+           TOBN(0x5e148149, 0x58ddd3ef), TOBN(0xa7bde582, 0x9e72dba8)},
+          {TOBN(0x0769da8b, 0x6fa68750), TOBN(0xfa64e532, 0x572e0249),
+           TOBN(0xfcaadf9d, 0x2619ad31), TOBN(0x87882daa, 0xa7b349cd)}},
+         {{TOBN(0x9f6eb731, 0x6c67a775), TOBN(0xcb10471a, 0xefc5d0b1),
+           TOBN(0xb433750c, 0xe1b806b2), TOBN(0x19c5714d, 0x57b1ae7e)},
+          {TOBN(0xc0dc8b7b, 0xed03fd3f), TOBN(0xdd03344f, 0x31bc194e),
+           TOBN(0xa66c52a7, 0x8c6320b5), TOBN(0x8bc82ce3, 0xd0b6fd93)}},
+         {{TOBN(0xf8e13501, 0xb35f1341), TOBN(0xe53156dd, 0x25a43e42),
+           TOBN(0xd3adf27e, 0x4daeb85c), TOBN(0xb81d8379, 0xbbeddeb5)},
+          {TOBN(0x1b0b546e, 0x2e435867), TOBN(0x9020eb94, 0xeba5dd60),
+           TOBN(0x37d91161, 0x8210cb9d), TOBN(0x4c596b31, 0x5c91f1cf)}},
+         {{TOBN(0xb228a90f, 0x0e0b040d), TOBN(0xbaf02d82, 0x45ff897f),
+           TOBN(0x2aac79e6, 0x00fa6122), TOBN(0x24828817, 0x8e36f557)},
+          {TOBN(0xb9521d31, 0x113ec356), TOBN(0x9e48861e, 0x15eff1f8),
+           TOBN(0x2aa1d412, 0xe0d41715), TOBN(0x71f86203, 0x53f131b8)}},
+         {{TOBN(0xf60da8da, 0x3fd19408), TOBN(0x4aa716dc, 0x278d9d99),
+           TOBN(0x394531f7, 0xa8c51c90), TOBN(0xb560b0e8, 0xf59db51c)},
+          {TOBN(0xa28fc992, 0xfa34bdad), TOBN(0xf024fa14, 0x9cd4f8bd),
+           TOBN(0x5cf530f7, 0x23a9d0d3), TOBN(0x615ca193, 0xe28c9b56)}},
+         {{TOBN(0x6d2a483d, 0x6f73c51e), TOBN(0xa4cb2412, 0xea0dc2dd),
+           TOBN(0x50663c41, 0x1eb917ff), TOBN(0x3d3a74cf, 0xeade299e)},
+          {TOBN(0x29b3990f, 0x4a7a9202), TOBN(0xa9bccf59, 0xa7b15c3d),
+           TOBN(0x66a3ccdc, 0xa5df9208), TOBN(0x48027c14, 0x43f2f929)}},
+         {{TOBN(0xd385377c, 0x40b557f0), TOBN(0xe001c366, 0xcd684660),
+           TOBN(0x1b18ed6b, 0xe2183a27), TOBN(0x879738d8, 0x63210329)},
+          {TOBN(0xa687c74b, 0xbda94882), TOBN(0xd1bbcc48, 0xa684b299),
+           TOBN(0xaf6f1112, 0x863b3724), TOBN(0x6943d1b4, 0x2c8ce9f8)}},
+         {{TOBN(0xe044a3bb, 0x098cafb4), TOBN(0x27ed2310, 0x60d48caf),
+           TOBN(0x542b5675, 0x3a31b84d), TOBN(0xcbf3dd50, 0xfcddbed7)},
+          {TOBN(0x25031f16, 0x41b1d830), TOBN(0xa7ec851d, 0xcb0c1e27),
+           TOBN(0xac1c8fe0, 0xb5ae75db), TOBN(0xb24c7557, 0x08c52120)}},
+         {{TOBN(0x57f811dc, 0x1d4636c3), TOBN(0xf8436526, 0x681a9939),
+           TOBN(0x1f6bc6d9, 0x9c81adb3), TOBN(0x840f8ac3, 0x5b7d80d4)},
+          {TOBN(0x731a9811, 0xf4387f1a), TOBN(0x7c501cd3, 0xb5156880),
+           TOBN(0xa5ca4a07, 0xdfe68867), TOBN(0xf123d8f0, 0x5fcea120)}},
+         {{TOBN(0x1fbb0e71, 0xd607039e), TOBN(0x2b70e215, 0xcd3a4546),
+           TOBN(0x32d2f01d, 0x53324091), TOBN(0xb796ff08, 0x180ab19b)},
+          {TOBN(0x32d87a86, 0x3c57c4aa), TOBN(0x2aed9caf, 0xb7c49a27),
+           TOBN(0x9fb35eac, 0x31630d98), TOBN(0x338e8cdf, 0x5c3e20a3)}},
+         {{TOBN(0x80f16182, 0x66cde8db), TOBN(0x4e159980, 0x2d72fd36),
+           TOBN(0xd7b8f13b, 0x9b6e5072), TOBN(0xf5213907, 0x3b7b5dc1)},
+          {TOBN(0x4d431f1d, 0x8ce4396e), TOBN(0x37a1a680, 0xa7ed2142),
+           TOBN(0xbf375696, 0xd01aaf6b), TOBN(0xaa1c0c54, 0xe63aab66)}},
+         {{TOBN(0x3014368b, 0x4ed80940), TOBN(0x67e6d056, 0x7a6fcedd),
+           TOBN(0x7c208c49, 0xca97579f), TOBN(0xfe3d7a81, 0xa23597f6)},
+          {TOBN(0x5e203202, 0x7e096ae2), TOBN(0xb1f3e1e7, 0x24b39366),
+           TOBN(0x26da26f3, 0x2fdcdffc), TOBN(0x79422f1d, 0x6097be83)}}},
+        {{{TOBN(0x263a2cfb, 0x9db3b381), TOBN(0x9c3a2dee, 0xd4df0a4b),
+           TOBN(0x728d06e9, 0x7d04e61f), TOBN(0x8b1adfbc, 0x42449325)},
+          {TOBN(0x6ec1d939, 0x7e053a1b), TOBN(0xee2be5c7, 0x66daf707),
+           TOBN(0x80ba1e14, 0x810ac7ab), TOBN(0xdd2ae778, 0xf530f174)}},
+         {{TOBN(0x0435d97a, 0x205b9d8b), TOBN(0x6eb8f064, 0x056756d4),
+           TOBN(0xd5e88a8b, 0xb6f8210e), TOBN(0x070ef12d, 0xec9fd9ea)},
+          {TOBN(0x4d849505, 0x3bcc876a), TOBN(0x12a75338, 0xa7404ce3),
+           TOBN(0xd22b49e1, 0xb8a1db5e), TOBN(0xec1f2051, 0x14bfa5ad)}},
+         {{TOBN(0xadbaeb79, 0xb6828f36), TOBN(0x9d7a0258, 0x01bd5b9e),
+           TOBN(0xeda01e0d, 0x1e844b0c), TOBN(0x4b625175, 0x887edfc9)},
+          {TOBN(0x14109fdd, 0x9669b621), TOBN(0x88a2ca56, 0xf6f87b98),
+           TOBN(0xfe2eb788, 0x170df6bc), TOBN(0x0cea06f4, 0xffa473f9)}},
+         {{TOBN(0x43ed81b5, 0xc4e83d33), TOBN(0xd9f35879, 0x5efd488b),
+           TOBN(0x164a620f, 0x9deb4d0f), TOBN(0xc6927bdb, 0xac6a7394)},
+          {TOBN(0x45c28df7, 0x9f9e0f03), TOBN(0x2868661e, 0xfcd7e1a9),
+           TOBN(0x7cf4e8d0, 0xffa348f1), TOBN(0x6bd4c284, 0x398538e0)}},
+         {{TOBN(0x2618a091, 0x289a8619), TOBN(0xef796e60, 0x6671b173),
+           TOBN(0x664e46e5, 0x9090c632), TOBN(0xa38062d4, 0x1e66f8fb)},
+          {TOBN(0x6c744a20, 0x0573274e), TOBN(0xd07b67e4, 0xa9271394),
+           TOBN(0x391223b2, 0x6bdc0e20), TOBN(0xbe2d93f1, 0xeb0a05a7)}},
+         {{TOBN(0xf23e2e53, 0x3f36d141), TOBN(0xe84bb3d4, 0x4dfca442),
+           TOBN(0xb804a48d, 0x6b7c023a), TOBN(0x1e16a8fa, 0x76431c3b)},
+          {TOBN(0x1b5452ad, 0xddd472e0), TOBN(0x7d405ee7, 0x0d1ee127),
+           TOBN(0x50fc6f1d, 0xffa27599), TOBN(0x351ac53c, 0xbf391b35)}},
+         {{TOBN(0x7efa14b8, 0x4444896b), TOBN(0x64974d2f, 0xf94027fb),
+           TOBN(0xefdcd0e8, 0xde84487d), TOBN(0x8c45b260, 0x2b48989b)},
+          {TOBN(0xa8fcbbc2, 0xd8463487), TOBN(0xd1b2b3f7, 0x3fbc476c),
+           TOBN(0x21d005b7, 0xc8f443c0), TOBN(0x518f2e67, 0x40c0139c)}},
+         {{TOBN(0x56036e8c, 0x06d75fc1), TOBN(0x2dcf7bb7, 0x3249a89f),
+           TOBN(0x81dd1d3d, 0xe245e7dd), TOBN(0xf578dc4b, 0xebd6e2a7)},
+          {TOBN(0x4c028903, 0xdf2ce7a0), TOBN(0xaee36288, 0x9c39afac),
+           TOBN(0xdc847c31, 0x146404ab), TOBN(0x6304c0d8, 0xa4e97818)}},
+         {{TOBN(0xae51dca2, 0xa91f6791), TOBN(0x2abe4190, 0x9baa9efc),
+           TOBN(0xd9d2e2f4, 0x559c7ac1), TOBN(0xe82f4b51, 0xfc9f773a)},
+          {TOBN(0xa7713027, 0x4073e81c), TOBN(0xc0276fac, 0xfbb596fc),
+           TOBN(0x1d819fc9, 0xa684f70c), TOBN(0x29b47fdd, 0xc9f7b1e0)}},
+         {{TOBN(0x358de103, 0x459b1940), TOBN(0xec881c59, 0x5b013e93),
+           TOBN(0x51574c93, 0x49532ad3), TOBN(0x2db1d445, 0xb37b46de)},
+          {TOBN(0xc6445b87, 0xdf239fd8), TOBN(0xc718af75, 0x151d24ee),
+           TOBN(0xaea1c4a4, 0xf43c6259), TOBN(0x40c0e5d7, 0x70be02f7)}},
+         {{TOBN(0x6a4590f4, 0x721b33f2), TOBN(0x2124f1fb, 0xfedf04ea),
+           TOBN(0xf8e53cde, 0x9745efe7), TOBN(0xe7e10432, 0x65f046d9)},
+          {TOBN(0xc3fca28e, 0xe4d0c7e6), TOBN(0x847e339a, 0x87253b1b),
+           TOBN(0x9b595348, 0x3743e643), TOBN(0xcb6a0a0b, 0x4fd12fc5)}},
+         {{TOBN(0xfb6836c3, 0x27d02dcc), TOBN(0x5ad00982, 0x7a68bcc2),
+           TOBN(0x1b24b44c, 0x005e912d), TOBN(0xcc83d20f, 0x811fdcfe)},
+          {TOBN(0x36527ec1, 0x666fba0c), TOBN(0x69948197, 0x14754635),
+           TOBN(0xfcdcb1a8, 0x556da9c2), TOBN(0xa5934267, 0x81a732b2)}},
+         {{TOBN(0xec1214ed, 0xa714181d), TOBN(0x609ac13b, 0x6067b341),
+           TOBN(0xff4b4c97, 0xa545df1f), TOBN(0xa1240501, 0x34d2076b)},
+          {TOBN(0x6efa0c23, 0x1409ca97), TOBN(0x254cc1a8, 0x20638c43),
+           TOBN(0xd4e363af, 0xdcfb46cd), TOBN(0x62c2adc3, 0x03942a27)}},
+         {{TOBN(0xc67b9df0, 0x56e46483), TOBN(0xa55abb20, 0x63736356),
+           TOBN(0xab93c098, 0xc551bc52), TOBN(0x382b49f9, 0xb15fe64b)},
+          {TOBN(0x9ec221ad, 0x4dff8d47), TOBN(0x79caf615, 0x437df4d6),
+           TOBN(0x5f13dc64, 0xbb456509), TOBN(0xe4c589d9, 0x191f0714)}},
+         {{TOBN(0x27b6a8ab, 0x3fd40e09), TOBN(0xe455842e, 0x77313ea9),
+           TOBN(0x8b51d1e2, 0x1f55988b), TOBN(0x5716dd73, 0x062bbbfc)},
+          {TOBN(0x633c11e5, 0x4e8bf3de), TOBN(0x9a0e77b6, 0x1b85be3b),
+           TOBN(0x56510729, 0x0911cca6), TOBN(0x27e76495, 0xefa6590f)}},
+         {{TOBN(0xe4ac8b33, 0x070d3aab), TOBN(0x2643672b, 0x9a2cd5e5),
+           TOBN(0x52eff79b, 0x1cfc9173), TOBN(0x665ca49b, 0x90a7c13f)},
+          {TOBN(0x5a8dda59, 0xb3efb998), TOBN(0x8a5b922d, 0x052f1341),
+           TOBN(0xae9ebbab, 0x3cf9a530), TOBN(0x35986e7b, 0xf56da4d7)}},
+         {{TOBN(0x3a636b5c, 0xff3513cc), TOBN(0xbb0cf8ba, 0x3198f7dd),
+           TOBN(0xb8d40522, 0x41f16f86), TOBN(0x760575d8, 0xde13a7bf)},
+          {TOBN(0x36f74e16, 0x9f7aa181), TOBN(0x163a3ecf, 0xf509ed1c),
+           TOBN(0x6aead61f, 0x3c40a491), TOBN(0x158c95fc, 0xdfe8fcaa)}},
+         {{TOBN(0xa3991b6e, 0x13cda46f), TOBN(0x79482415, 0x342faed0),
+           TOBN(0xf3ba5bde, 0x666b5970), TOBN(0x1d52e6bc, 0xb26ab6dd)},
+          {TOBN(0x768ba1e7, 0x8608dd3d), TOBN(0x4930db2a, 0xea076586),
+           TOBN(0xd9575714, 0xe7dc1afa), TOBN(0x1fc7bf7d, 0xf7c58817)}},
+         {{TOBN(0x6b47accd, 0xd9eee96c), TOBN(0x0ca277fb, 0xe58cec37),
+           TOBN(0x113fe413, 0xe702c42a), TOBN(0xdd1764ee, 0xc47cbe51)},
+          {TOBN(0x041e7cde, 0x7b3ed739), TOBN(0x50cb7459, 0x5ce9e1c0),
+           TOBN(0x35568513, 0x2925b212), TOBN(0x7cff95c4, 0x001b081c)}},
+         {{TOBN(0x63ee4cbd, 0x8088b454), TOBN(0xdb7f32f7, 0x9a9e0c8a),
+           TOBN(0xb377d418, 0x6b2447cb), TOBN(0xe3e982aa, 0xd370219b)},
+          {TOBN(0x06ccc1e4, 0xc2a2a593), TOBN(0x72c36865, 0x0773f24f),
+           TOBN(0xa13b4da7, 0x95859423), TOBN(0x8bbf1d33, 0x75040c8f)}},
+         {{TOBN(0x726f0973, 0xda50c991), TOBN(0x48afcd5b, 0x822d6ee2),
+           TOBN(0xe5fc718b, 0x20fd7771), TOBN(0xb9e8e77d, 0xfd0807a1)},
+          {TOBN(0x7f5e0f44, 0x99a7703d), TOBN(0x6972930e, 0x618e36f3),
+           TOBN(0x2b7c77b8, 0x23807bbe), TOBN(0xe5b82405, 0xcb27ff50)}},
+         {{TOBN(0xba8b8be3, 0xbd379062), TOBN(0xd64b7a1d, 0x2dce4a92),
+           TOBN(0x040a73c5, 0xb2952e37), TOBN(0x0a9e252e, 0xd438aeca)},
+          {TOBN(0xdd43956b, 0xc39d3bcb), TOBN(0x1a31ca00, 0xb32b2d63),
+           TOBN(0xd67133b8, 0x5c417a18), TOBN(0xd08e4790, 0x2ef442c8)}},
+         {{TOBN(0x98cb1ae9, 0x255c0980), TOBN(0x4bd86381, 0x2b4a739f),
+           TOBN(0x5a5c31e1, 0x1e4a45a1), TOBN(0x1e5d55fe, 0x9cb0db2f)},
+          {TOBN(0x74661b06, 0x8ff5cc29), TOBN(0x026b389f, 0x0eb8a4f4),
+           TOBN(0x536b21a4, 0x58848c24), TOBN(0x2e5bf8ec, 0x81dc72b0)}},
+         {{TOBN(0x03c187d0, 0xad886aac), TOBN(0x5c16878a, 0xb771b645),
+           TOBN(0xb07dfc6f, 0xc74045ab), TOBN(0x2c6360bf, 0x7800caed)},
+          {TOBN(0x24295bb5, 0xb9c972a3), TOBN(0xc9e6f88e, 0x7c9a6dba),
+           TOBN(0x90ffbf24, 0x92a79aa6), TOBN(0xde29d50a, 0x41c26ac2)}},
+         {{TOBN(0x9f0af483, 0xd309cbe6), TOBN(0x5b020d8a, 0xe0bced4f),
+           TOBN(0x606e986d, 0xb38023e3), TOBN(0xad8f2c9d, 0x1abc6933)},
+          {TOBN(0x19292e1d, 0xe7400e93), TOBN(0xfe3e18a9, 0x52be5e4d),
+           TOBN(0xe8e9771d, 0x2e0680bf), TOBN(0x8c5bec98, 0xc54db063)}},
+         {{TOBN(0x2af9662a, 0x74a55d1f), TOBN(0xe3fbf28f, 0x046f66d8),
+           TOBN(0xa3a72ab4, 0xd4dc4794), TOBN(0x09779f45, 0x5c7c2dd8)},
+          {TOBN(0xd893bdaf, 0xc3d19d8d), TOBN(0xd5a75094, 0x57d6a6df),
+           TOBN(0x8cf8fef9, 0x952e6255), TOBN(0x3da67cfb, 0xda9a8aff)}},
+         {{TOBN(0x4c23f62a, 0x2c160dcd), TOBN(0x34e6c5e3, 0x8f90eaef),
+           TOBN(0x35865519, 0xa9a65d5a), TOBN(0x07c48aae, 0x8fd38a3d)},
+          {TOBN(0xb7e7aeda, 0x50068527), TOBN(0x2c09ef23, 0x1c90936a),
+           TOBN(0x31ecfeb6, 0xe879324c), TOBN(0xa0871f6b, 0xfb0ec938)}},
+         {{TOBN(0xb1f0fb68, 0xd84d835d), TOBN(0xc90caf39, 0x861dc1e6),
+           TOBN(0x12e5b046, 0x7594f8d7), TOBN(0x26897ae2, 0x65012b92)},
+          {TOBN(0xbcf68a08, 0xa4d6755d), TOBN(0x403ee41c, 0x0991fbda),
+           TOBN(0x733e343e, 0x3bbf17e8), TOBN(0xd2c7980d, 0x679b3d65)}},
+         {{TOBN(0x33056232, 0xd2e11305), TOBN(0x966be492, 0xf3c07a6f),
+           TOBN(0x6a8878ff, 0xbb15509d), TOBN(0xff221101, 0x0a9b59a4)},
+          {TOBN(0x6c9f564a, 0xabe30129), TOBN(0xc6f2c940, 0x336e64cf),
+           TOBN(0x0fe75262, 0x8b0c8022), TOBN(0xbe0267e9, 0x6ae8db87)}},
+         {{TOBN(0x22e192f1, 0x93bc042b), TOBN(0xf085b534, 0xb237c458),
+           TOBN(0xa0d192bd, 0x832c4168), TOBN(0x7a76e9e3, 0xbdf6271d)},
+          {TOBN(0x52a882fa, 0xb88911b5), TOBN(0xc85345e4, 0xb4db0eb5),
+           TOBN(0xa3be02a6, 0x81a7c3ff), TOBN(0x51889c8c, 0xf0ec0469)}},
+         {{TOBN(0x9d031369, 0xa5e829e5), TOBN(0xcbb4c6fc, 0x1607aa41),
+           TOBN(0x75ac59a6, 0x241d84c1), TOBN(0xc043f2bf, 0x8829e0ee)},
+          {TOBN(0x82a38f75, 0x8ea5e185), TOBN(0x8bda40b9, 0xd87cbd9f),
+           TOBN(0x9e65e75e, 0x2d8fc601), TOBN(0x3d515f74, 0xa35690b3)}},
+         {{TOBN(0x534acf4f, 0xda79e5ac), TOBN(0x68b83b3a, 0x8630215f),
+           TOBN(0x5c748b2e, 0xd085756e), TOBN(0xb0317258, 0xe5d37cb2)},
+          {TOBN(0x6735841a, 0xc5ccc2c4), TOBN(0x7d7dc96b, 0x3d9d5069),
+           TOBN(0xa147e410, 0xfd1754bd), TOBN(0x65296e94, 0xd399ddd5)}},
+         {{TOBN(0xf6b5b2d0, 0xbc8fa5bc), TOBN(0x8a5ead67, 0x500c277b),
+           TOBN(0x214625e6, 0xdfa08a5d), TOBN(0x51fdfedc, 0x959cf047)},
+          {TOBN(0x6bc9430b, 0x289fca32), TOBN(0xe36ff0cf, 0x9d9bdc3f),
+           TOBN(0x2fe187cb, 0x58ea0ede), TOBN(0xed66af20, 0x5a900b3f)}},
+         {{TOBN(0x00e0968b, 0x5fa9f4d6), TOBN(0x2d4066ce, 0x37a362e7),
+           TOBN(0xa99a9748, 0xbd07e772), TOBN(0x710989c0, 0x06a4f1d0)},
+          {TOBN(0xd5dedf35, 0xce40cbd8), TOBN(0xab55c5f0, 0x1743293d),
+           TOBN(0x766f1144, 0x8aa24e2c), TOBN(0x94d874f8, 0x605fbcb4)}},
+         {{TOBN(0xa365f0e8, 0xa518001b), TOBN(0xee605eb6, 0x9d04ef0f),
+           TOBN(0x5a3915cd, 0xba8d4d25), TOBN(0x44c0e1b8, 0xb5113472)},
+          {TOBN(0xcbb024e8, 0x8b6740dc), TOBN(0x89087a53, 0xee1d4f0c),
+           TOBN(0xa88fa05c, 0x1fc4e372), TOBN(0x8bf395cb, 0xaf8b3af2)}},
+         {{TOBN(0x1e71c9a1, 0xdeb8568b), TOBN(0xa35daea0, 0x80fb3d32),
+           TOBN(0xe8b6f266, 0x2cf8fb81), TOBN(0x6d51afe8, 0x9490696a)},
+          {TOBN(0x81beac6e, 0x51803a19), TOBN(0xe3d24b7f, 0x86219080),
+           TOBN(0x727cfd9d, 0xdf6f463c), TOBN(0x8c6865ca, 0x72284ee8)}},
+         {{TOBN(0x32c88b7d, 0xb743f4ef), TOBN(0x3793909b, 0xe7d11dce),
+           TOBN(0xd398f922, 0x2ff2ebe8), TOBN(0x2c70ca44, 0xe5e49796)},
+          {TOBN(0xdf4d9929, 0xcb1131b1), TOBN(0x7826f298, 0x25888e79),
+           TOBN(0x4d3a112c, 0xf1d8740a), TOBN(0x00384cb6, 0x270afa8b)}},
+         {{TOBN(0xcb64125b, 0x3ab48095), TOBN(0x3451c256, 0x62d05106),
+           TOBN(0xd73d577d, 0xa4955845), TOBN(0x39570c16, 0xbf9f4433)},
+          {TOBN(0xd7dfaad3, 0xadecf263), TOBN(0xf1c3d8d1, 0xdc76e102),
+           TOBN(0x5e774a58, 0x54c6a836), TOBN(0xdad4b672, 0x3e92d47b)}},
+         {{TOBN(0xbe7e990f, 0xf0d796a0), TOBN(0x5fc62478, 0xdf0e8b02),
+           TOBN(0x8aae8bf4, 0x030c00ad), TOBN(0x3d2db93b, 0x9004ba0f)},
+          {TOBN(0xe48c8a79, 0xd85d5ddc), TOBN(0xe907caa7, 0x6bb07f34),
+           TOBN(0x58db343a, 0xa39eaed5), TOBN(0x0ea6e007, 0xadaf5724)}},
+         {{TOBN(0xe00df169, 0xd23233f3), TOBN(0x3e322796, 0x77cb637f),
+           TOBN(0x1f897c0e, 0x1da0cf6c), TOBN(0xa651f5d8, 0x31d6bbdd)},
+          {TOBN(0xdd61af19, 0x1a230c76), TOBN(0xbd527272, 0xcdaa5e4a),
+           TOBN(0xca753636, 0xd0abcd7e), TOBN(0x78bdd37c, 0x370bd8dc)}},
+         {{TOBN(0xc23916c2, 0x17cd93fe), TOBN(0x65b97a4d, 0xdadce6e2),
+           TOBN(0xe04ed4eb, 0x174e42f8), TOBN(0x1491ccaa, 0xbb21480a)},
+          {TOBN(0x145a8280, 0x23196332), TOBN(0x3c3862d7, 0x587b479a),
+           TOBN(0x9f4a88a3, 0x01dcd0ed), TOBN(0x4da2b7ef, 0x3ea12f1f)}},
+         {{TOBN(0xf8e7ae33, 0xb126e48e), TOBN(0x404a0b32, 0xf494e237),
+           TOBN(0x9beac474, 0xc55acadb), TOBN(0x4ee5cf3b, 0xcbec9fd9)},
+          {TOBN(0x336b33b9, 0x7df3c8c3), TOBN(0xbd905fe3, 0xb76808fd),
+           TOBN(0x8f436981, 0xaa45c16a), TOBN(0x255c5bfa, 0x3dd27b62)}},
+         {{TOBN(0x71965cbf, 0xc3dd9b4d), TOBN(0xce23edbf, 0xfc068a87),
+           TOBN(0xb78d4725, 0x745b029b), TOBN(0x74610713, 0xcefdd9bd)},
+          {TOBN(0x7116f75f, 0x1266bf52), TOBN(0x02046722, 0x18e49bb6),
+           TOBN(0xdf43df9f, 0x3d6f19e3), TOBN(0xef1bc7d0, 0xe685cb2f)}},
+         {{TOBN(0xcddb27c1, 0x7078c432), TOBN(0xe1961b9c, 0xb77fedb7),
+           TOBN(0x1edc2f5c, 0xc2290570), TOBN(0x2c3fefca, 0x19cbd886)},
+          {TOBN(0xcf880a36, 0xc2af389a), TOBN(0x96c610fd, 0xbda71cea),
+           TOBN(0xf03977a9, 0x32aa8463), TOBN(0x8eb7763f, 0x8586d90a)}},
+         {{TOBN(0x3f342454, 0x2a296e77), TOBN(0xc8718683, 0x42837a35),
+           TOBN(0x7dc71090, 0x6a09c731), TOBN(0x54778ffb, 0x51b816db)},
+          {TOBN(0x6b33bfec, 0xaf06defd), TOBN(0xfe3c105f, 0x8592b70b),
+           TOBN(0xf937fda4, 0x61da6114), TOBN(0x3c13e651, 0x4c266ad7)}},
+         {{TOBN(0xe363a829, 0x855938e8), TOBN(0x2eeb5d9e, 0x9de54b72),
+           TOBN(0xbeb93b0e, 0x20ccfab9), TOBN(0x3dffbb5f, 0x25e61a25)},
+          {TOBN(0x7f655e43, 0x1acc093d), TOBN(0x0cb6cc3d, 0x3964ce61),
+           TOBN(0x6ab283a1, 0xe5e9b460), TOBN(0x55d787c5, 0xa1c7e72d)}},
+         {{TOBN(0x4d2efd47, 0xdeadbf02), TOBN(0x11e80219, 0xac459068),
+           TOBN(0x810c7626, 0x71f311f0), TOBN(0xfa17ef8d, 0x4ab6ef53)},
+          {TOBN(0xaf47fd25, 0x93e43bff), TOBN(0x5cb5ff3f, 0x0be40632),
+           TOBN(0x54687106, 0x8ee61da3), TOBN(0x7764196e, 0xb08afd0f)}},
+         {{TOBN(0x831ab3ed, 0xf0290a8f), TOBN(0xcae81966, 0xcb47c387),
+           TOBN(0xaad7dece, 0x184efb4f), TOBN(0xdcfc53b3, 0x4749110e)},
+          {TOBN(0x6698f23c, 0x4cb632f9), TOBN(0xc42a1ad6, 0xb91f8067),
+           TOBN(0xb116a81d, 0x6284180a), TOBN(0xebedf5f8, 0xe901326f)}},
+         {{TOBN(0xf2274c9f, 0x97e3e044), TOBN(0x42018520, 0x11d09fc9),
+           TOBN(0x56a65f17, 0xd18e6e23), TOBN(0x2ea61e2a, 0x352b683c)},
+          {TOBN(0x27d291bc, 0x575eaa94), TOBN(0x9e7bc721, 0xb8ff522d),
+           TOBN(0x5f7268bf, 0xa7f04d6f), TOBN(0x5868c73f, 0xaba41748)}},
+         {{TOBN(0x9f85c2db, 0x7be0eead), TOBN(0x511e7842, 0xff719135),
+           TOBN(0x5a06b1e9, 0xc5ea90d7), TOBN(0x0c19e283, 0x26fab631)},
+          {TOBN(0x8af8f0cf, 0xe9206c55), TOBN(0x89389cb4, 0x3553c06a),
+           TOBN(0x39dbed97, 0xf65f8004), TOBN(0x0621b037, 0xc508991d)}},
+         {{TOBN(0x1c52e635, 0x96e78cc4), TOBN(0x5385c8b2, 0x0c06b4a8),
+           TOBN(0xd84ddfdb, 0xb0e87d03), TOBN(0xc49dfb66, 0x934bafad)},
+          {TOBN(0x7071e170, 0x59f70772), TOBN(0x3a073a84, 0x3a1db56b),
+           TOBN(0x03494903, 0x3b8af190), TOBN(0x7d882de3, 0xd32920f0)}},
+         {{TOBN(0x91633f0a, 0xb2cf8940), TOBN(0x72b0b178, 0x6f948f51),
+           TOBN(0x2d28dc30, 0x782653c8), TOBN(0x88829849, 0xdb903a05)},
+          {TOBN(0xb8095d0c, 0x6a19d2bb), TOBN(0x4b9e7f0c, 0x86f782cb),
+           TOBN(0x7af73988, 0x2d907064), TOBN(0xd12be0fe, 0x8b32643c)}},
+         {{TOBN(0x358ed23d, 0x0e165dc3), TOBN(0x3d47ce62, 0x4e2378ce),
+           TOBN(0x7e2bb0b9, 0xfeb8a087), TOBN(0x3246e8ae, 0xe29e10b9)},
+          {TOBN(0x459f4ec7, 0x03ce2b4d), TOBN(0xe9b4ca1b, 0xbbc077cf),
+           TOBN(0x2613b4f2, 0x0e9940c1), TOBN(0xfc598bb9, 0x047d1eb1)}},
+         {{TOBN(0x9744c62b, 0x45036099), TOBN(0xa9dee742, 0x167c65d8),
+           TOBN(0x0c511525, 0xdabe1943), TOBN(0xda110554, 0x93c6c624)},
+          {TOBN(0xae00a52c, 0x651a3be2), TOBN(0xcda5111d, 0x884449a6),
+           TOBN(0x063c06f4, 0xff33bed1), TOBN(0x73baaf9a, 0x0d3d76b4)}},
+         {{TOBN(0x52fb0c9d, 0x7fc63668), TOBN(0x6886c9dd, 0x0c039cde),
+           TOBN(0x602bd599, 0x55b22351), TOBN(0xb00cab02, 0x360c7c13)},
+          {TOBN(0x8cb616bc, 0x81b69442), TOBN(0x41486700, 0xb55c3cee),
+           TOBN(0x71093281, 0xf49ba278), TOBN(0xad956d9c, 0x64a50710)}},
+         {{TOBN(0x9561f28b, 0x638a7e81), TOBN(0x54155cdf, 0x5980ddc3),
+           TOBN(0xb2db4a96, 0xd26f247a), TOBN(0x9d774e4e, 0x4787d100)},
+          {TOBN(0x1a9e6e2e, 0x078637d2), TOBN(0x1c363e2d, 0x5e0ae06a),
+           TOBN(0x7493483e, 0xe9cfa354), TOBN(0x76843cb3, 0x7f74b98d)}},
+         {{TOBN(0xbaca6591, 0xd4b66947), TOBN(0xb452ce98, 0x04460a8c),
+           TOBN(0x6830d246, 0x43768f55), TOBN(0xf4197ed8, 0x7dff12df)},
+          {TOBN(0x6521b472, 0x400dd0f7), TOBN(0x59f5ca8f, 0x4b1e7093),
+           TOBN(0x6feff11b, 0x080338ae), TOBN(0x0ada31f6, 0xa29ca3c6)}},
+         {{TOBN(0x24794eb6, 0x94a2c215), TOBN(0xd83a43ab, 0x05a57ab4),
+           TOBN(0x264a543a, 0x2a6f89fe), TOBN(0x2c2a3868, 0xdd5ec7c2)},
+          {TOBN(0xd3373940, 0x8439d9b2), TOBN(0x715ea672, 0x0acd1f11),
+           TOBN(0x42c1d235, 0xe7e6cc19), TOBN(0x81ce6e96, 0xb990585c)}},
+         {{TOBN(0x04e5dfe0, 0xd809c7bd), TOBN(0xd7b2580c, 0x8f1050ab),
+           TOBN(0x6d91ad78, 0xd8a4176f), TOBN(0x0af556ee, 0x4e2e897c)},
+          {TOBN(0x162a8b73, 0x921de0ac), TOBN(0x52ac9c22, 0x7ea78400),
+           TOBN(0xee2a4eea, 0xefce2174), TOBN(0xbe61844e, 0x6d637f79)}},
+         {{TOBN(0x0491f1bc, 0x789a283b), TOBN(0x72d3ac3d, 0x880836f4),
+           TOBN(0xaa1c5ea3, 0x88e5402d), TOBN(0x1b192421, 0xd5cc473d)},
+          {TOBN(0x5c0b9998, 0x9dc84cac), TOBN(0xb0a8482d, 0x9c6e75b8),
+           TOBN(0x639961d0, 0x3a191ce2), TOBN(0xda3bc865, 0x6d837930)}},
+         {{TOBN(0xca990653, 0x056e6f8f), TOBN(0x84861c41, 0x64d133a7),
+           TOBN(0x8b403276, 0x746abe40), TOBN(0xb7b4d51a, 0xebf8e303)},
+          {TOBN(0x05b43211, 0x220a255d), TOBN(0xc997152c, 0x02419e6e),
+           TOBN(0x76ff47b6, 0x630c2fea), TOBN(0x50518677, 0x281fdade)}},
+         {{TOBN(0x3283b8ba, 0xcf902b0b), TOBN(0x8d4b4eb5, 0x37db303b),
+           TOBN(0xcc89f42d, 0x755011bc), TOBN(0xb43d74bb, 0xdd09d19b)},
+          {TOBN(0x65746bc9, 0x8adba350), TOBN(0x364eaf8c, 0xb51c1927),
+           TOBN(0x13c76596, 0x10ad72ec), TOBN(0x30045121, 0xf8d40c20)}},
+         {{TOBN(0x6d2d99b7, 0xea7b979b), TOBN(0xcd78cd74, 0xe6fb3bcd),
+           TOBN(0x11e45a9e, 0x86cffbfe), TOBN(0x78a61cf4, 0x637024f6)},
+          {TOBN(0xd06bc872, 0x3d502295), TOBN(0xf1376854, 0x458cb288),
+           TOBN(0xb9db26a1, 0x342f8586), TOBN(0xf33effcf, 0x4beee09e)}},
+         {{TOBN(0xd7e0c4cd, 0xb30cfb3a), TOBN(0x6d09b8c1, 0x6c9db4c8),
+           TOBN(0x40ba1a42, 0x07c8d9df), TOBN(0x6fd495f7, 0x1c52c66d)},
+          {TOBN(0xfb0e169f, 0x275264da), TOBN(0x80c2b746, 0xe57d8362),
+           TOBN(0xedd987f7, 0x49ad7222), TOBN(0xfdc229af, 0x4398ec7b)}}},
+        {{{TOBN(0xb0d1ed84, 0x52666a58), TOBN(0x4bcb6e00, 0xe6a9c3c2),
+           TOBN(0x3c57411c, 0x26906408), TOBN(0xcfc20755, 0x13556400)},
+          {TOBN(0xa08b1c50, 0x5294dba3), TOBN(0xa30ba286, 0x8b7dd31e),
+           TOBN(0xd70ba90e, 0x991eca74), TOBN(0x094e142c, 0xe762c2b9)}},
+         {{TOBN(0xb81d783e, 0x979f3925), TOBN(0x1efd130a, 0xaf4c89a7),
+           TOBN(0x525c2144, 0xfd1bf7fa), TOBN(0x4b296904, 0x1b265a9e)},
+          {TOBN(0xed8e9634, 0xb9db65b6), TOBN(0x35c82e32, 0x03599d8a),
+           TOBN(0xdaa7a54f, 0x403563f3), TOBN(0x9df088ad, 0x022c38ab)}},
+         {{TOBN(0xe5cfb066, 0xbb3fd30a), TOBN(0x429169da, 0xeff0354e),
+           TOBN(0x809cf852, 0x3524e36c), TOBN(0x136f4fb3, 0x0155be1d)},
+          {TOBN(0x4826af01, 0x1fbba712), TOBN(0x6ef0f0b4, 0x506ba1a1),
+           TOBN(0xd9928b31, 0x77aea73e), TOBN(0xe2bf6af2, 0x5eaa244e)}},
+         {{TOBN(0x8d084f12, 0x4237b64b), TOBN(0x688ebe99, 0xe3ecfd07),
+           TOBN(0x57b8a70c, 0xf6845dd8), TOBN(0x808fc59c, 0x5da4a325)},
+          {TOBN(0xa9032b2b, 0xa3585862), TOBN(0xb66825d5, 0xedf29386),
+           TOBN(0xb5a5a8db, 0x431ec29b), TOBN(0xbb143a98, 0x3a1e8dc8)}},
+         {{TOBN(0x35ee94ce, 0x12ae381b), TOBN(0x3a7f176c, 0x86ccda90),
+           TOBN(0xc63a657e, 0x4606eaca), TOBN(0x9ae5a380, 0x43cd04df)},
+          {TOBN(0x9bec8d15, 0xed251b46), TOBN(0x1f5d6d30, 0xcaca5e64),
+           TOBN(0x347b3b35, 0x9ff20f07), TOBN(0x4d65f034, 0xf7e4b286)}},
+         {{TOBN(0x9e93ba24, 0xf111661e), TOBN(0xedced484, 0xb105eb04),
+           TOBN(0x96dc9ba1, 0xf424b578), TOBN(0xbf8f66b7, 0xe83e9069)},
+          {TOBN(0x872d4df4, 0xd7ed8216), TOBN(0xbf07f377, 0x8e2cbecf),
+           TOBN(0x4281d899, 0x98e73754), TOBN(0xfec85fbb, 0x8aab8708)}},
+         {{TOBN(0x9a3c0dee, 0xa5ba5b0b), TOBN(0xe6a116ce, 0x42d05299),
+           TOBN(0xae9775fe, 0xe9b02d42), TOBN(0x72b05200, 0xa1545cb6)},
+          {TOBN(0xbc506f7d, 0x31a3b4ea), TOBN(0xe5893078, 0x8bbd9b32),
+           TOBN(0xc8bc5f37, 0xe4b12a97), TOBN(0x6b000c06, 0x4a73b671)}},
+         {{TOBN(0x13b5bf22, 0x765fa7d0), TOBN(0x59805bf0, 0x1d6a5370),
+           TOBN(0x67a5e29d, 0x4280db98), TOBN(0x4f53916f, 0x776b1ce3)},
+          {TOBN(0x714ff61f, 0x33ddf626), TOBN(0x4206238e, 0xa085d103),
+           TOBN(0x1c50d4b7, 0xe5809ee3), TOBN(0x999f450d, 0x85f8eb1d)}},
+         {{TOBN(0x658a6051, 0xe4c79e9b), TOBN(0x1394cb73, 0xc66a9fea),
+           TOBN(0x27f31ed5, 0xc6be7b23), TOBN(0xf4c88f36, 0x5aa6f8fe)},
+          {TOBN(0x0fb0721f, 0x4aaa499e), TOBN(0x68b3a7d5, 0xe3fb2a6b),
+           TOBN(0xa788097d, 0x3a92851d), TOBN(0x060e7f8a, 0xe96f4913)}},
+         {{TOBN(0x82eebe73, 0x1a3a93bc), TOBN(0x42bbf465, 0xa21adc1a),
+           TOBN(0xc10b6fa4, 0xef030efd), TOBN(0x247aa4c7, 0x87b097bb)},
+          {TOBN(0x8b8dc632, 0xf60c77da), TOBN(0x6ffbc26a, 0xc223523e),
+           TOBN(0xa4f6ff11, 0x344579cf), TOBN(0x5825653c, 0x980250f6)}},
+         {{TOBN(0xb2dd097e, 0xbc1aa2b9), TOBN(0x07889393, 0x37a0333a),
+           TOBN(0x1cf55e71, 0x37a0db38), TOBN(0x2648487f, 0x792c1613)},
+          {TOBN(0xdad01336, 0x3fcef261), TOBN(0x6239c81d, 0x0eabf129),
+           TOBN(0x8ee761de, 0x9d276be2), TOBN(0x406a7a34, 0x1eda6ad3)}},
+         {{TOBN(0x4bf367ba, 0x4a493b31), TOBN(0x54f20a52, 0x9bf7f026),
+           TOBN(0xb696e062, 0x9795914b), TOBN(0xcddab96d, 0x8bf236ac)},
+          {TOBN(0x4ff2c70a, 0xed25ea13), TOBN(0xfa1d09eb, 0x81cbbbe7),
+           TOBN(0x88fc8c87, 0x468544c5), TOBN(0x847a670d, 0x696b3317)}},
+         {{TOBN(0xf133421e, 0x64bcb626), TOBN(0xaea638c8, 0x26dee0b5),
+           TOBN(0xd6e7680b, 0xb310346c), TOBN(0xe06f4097, 0xd5d4ced3)},
+          {TOBN(0x09961452, 0x7512a30b), TOBN(0xf3d867fd, 0xe589a59a),
+           TOBN(0x2e73254f, 0x52d0c180), TOBN(0x9063d8a3, 0x333c74ac)}},
+         {{TOBN(0xeda6c595, 0xd314e7bc), TOBN(0x2ee7464b, 0x467899ed),
+           TOBN(0x1cef423c, 0x0a1ed5d3), TOBN(0x217e76ea, 0x69cc7613)},
+          {TOBN(0x27ccce1f, 0xe7cda917), TOBN(0x12d8016b, 0x8a893f16),
+           TOBN(0xbcd6de84, 0x9fc74f6b), TOBN(0xfa5817e2, 0xf3144e61)}},
+         {{TOBN(0x1f354164, 0x0821ee4c), TOBN(0x1583eab4, 0x0bc61992),
+           TOBN(0x7490caf6, 0x1d72879f), TOBN(0x998ad9f3, 0xf76ae7b2)},
+          {TOBN(0x1e181950, 0xa41157f7), TOBN(0xa9d7e1e6, 0xe8da3a7e),
+           TOBN(0x963784eb, 0x8426b95f), TOBN(0x0ee4ed6e, 0x542e2a10)}},
+         {{TOBN(0xb79d4cc5, 0xac751e7b), TOBN(0x93f96472, 0xfd4211bd),
+           TOBN(0x8c72d3d2, 0xc8de4fc6), TOBN(0x7b69cbf5, 0xdf44f064)},
+          {TOBN(0x3da90ca2, 0xf4bf94e1), TOBN(0x1a5325f8, 0xf12894e2),
+           TOBN(0x0a437f6c, 0x7917d60b), TOBN(0x9be70486, 0x96c9cb5d)}},
+         {{TOBN(0xb4d880bf, 0xe1dc5c05), TOBN(0xd738adda, 0xeebeeb57),
+           TOBN(0x6f0119d3, 0xdf0fe6a3), TOBN(0x5c686e55, 0x66eaaf5a)},
+          {TOBN(0x9cb10b50, 0xdfd0b7ec), TOBN(0xbdd0264b, 0x6a497c21),
+           TOBN(0xfc093514, 0x8c546c96), TOBN(0x58a947fa, 0x79dbf42a)}},
+         {{TOBN(0xc0b48d4e, 0x49ccd6d7), TOBN(0xff8fb02c, 0x88bd5580),
+           TOBN(0xc75235e9, 0x07d473b2), TOBN(0x4fab1ac5, 0xa2188af3)},
+          {TOBN(0x030fa3bc, 0x97576ec0), TOBN(0xe8c946e8, 0x0b7e7d2f),
+           TOBN(0x40a5c9cc, 0x70305600), TOBN(0x6d8260a9, 0xc8b013b4)}},
+         {{TOBN(0x0368304f, 0x70bba85c), TOBN(0xad090da1, 0xa4a0d311),
+           TOBN(0x7170e870, 0x2415eec1), TOBN(0xbfba35fe, 0x8461ea47)},
+          {TOBN(0x6279019a, 0xc1e91938), TOBN(0xa47638f3, 0x1afc415f),
+           TOBN(0x36c65cbb, 0xbcba0e0f), TOBN(0x02160efb, 0x034e2c48)}},
+         {{TOBN(0xe6c51073, 0x615cd9e4), TOBN(0x498ec047, 0xf1243c06),
+           TOBN(0x3e5a8809, 0xb17b3d8c), TOBN(0x5cd99e61, 0x0cc565f1)},
+          {TOBN(0x81e312df, 0x7851dafe), TOBN(0xf156f5ba, 0xa79061e2),
+           TOBN(0x80d62b71, 0x880c590e), TOBN(0xbec9746f, 0x0a39faa1)}},
+         {{TOBN(0x1d98a9c1, 0xc8ed1f7a), TOBN(0x09e43bb5, 0xa81d5ff2),
+           TOBN(0xd5f00f68, 0x0da0794a), TOBN(0x412050d9, 0x661aa836)},
+          {TOBN(0xa89f7c4e, 0x90747e40), TOBN(0x6dc05ebb, 0xb62a3686),
+           TOBN(0xdf4de847, 0x308e3353), TOBN(0x53868fbb, 0x9fb53bb9)}},
+         {{TOBN(0x2b09d2c3, 0xcfdcf7dd), TOBN(0x41a9fce3, 0x723fcab4),
+           TOBN(0x73d905f7, 0x07f57ca3), TOBN(0x080f9fb1, 0xac8e1555)},
+          {TOBN(0x7c088e84, 0x9ba7a531), TOBN(0x07d35586, 0xed9a147f),
+           TOBN(0x602846ab, 0xaf48c336), TOBN(0x7320fd32, 0x0ccf0e79)}},
+         {{TOBN(0xaa780798, 0xb18bd1ff), TOBN(0x52c2e300, 0xafdd2905),
+           TOBN(0xf27ea3d6, 0x434267cd), TOBN(0x8b96d16d, 0x15605b5f)},
+          {TOBN(0x7bb31049, 0x4b45706b), TOBN(0xe7f58b8e, 0x743d25f8),
+           TOBN(0xe9b5e45b, 0x87f30076), TOBN(0xd19448d6, 0x5d053d5a)}},
+         {{TOBN(0x1ecc8cb9, 0xd3210a04), TOBN(0x6bc7d463, 0xdafb5269),
+           TOBN(0x3e59b10a, 0x67c3489f), TOBN(0x1769788c, 0x65641e1b)},
+          {TOBN(0x8a53b82d, 0xbd6cb838), TOBN(0x7066d6e6, 0x236d5f22),
+           TOBN(0x03aa1c61, 0x6908536e), TOBN(0xc971da0d, 0x66ae9809)}},
+         {{TOBN(0x01b3a86b, 0xc49a2fac), TOBN(0x3b8420c0, 0x3092e77a),
+           TOBN(0x02057300, 0x7d6fb556), TOBN(0x6941b2a1, 0xbff40a87)},
+          {TOBN(0x140b6308, 0x0658ff2a), TOBN(0x87804363, 0x3424ab36),
+           TOBN(0x0253bd51, 0x5751e299), TOBN(0xc75bcd76, 0x449c3e3a)}},
+         {{TOBN(0x92eb4090, 0x7f8f875d), TOBN(0x9c9d754e, 0x56c26bbf),
+           TOBN(0x158cea61, 0x8110bbe7), TOBN(0x62a6b802, 0x745f91ea)},
+          {TOBN(0xa79c41aa, 0xc6e7394b), TOBN(0x445b6a83, 0xad57ef10),
+           TOBN(0x0c5277eb, 0x6ea6f40c), TOBN(0x319fe96b, 0x88633365)}},
+         {{TOBN(0x0b0fc61f, 0x385f63cb), TOBN(0x41250c84, 0x22bdd127),
+           TOBN(0x67d153f1, 0x09e942c2), TOBN(0x60920d08, 0xc021ad5d)},
+          {TOBN(0x229f5746, 0x724d81a5), TOBN(0xb7ffb892, 0x5bba3299),
+           TOBN(0x518c51a1, 0xde413032), TOBN(0x2a9bfe77, 0x3c2fd94c)}},
+         {{TOBN(0xcbcde239, 0x3191f4fd), TOBN(0x43093e16, 0xd3d6ada1),
+           TOBN(0x184579f3, 0x58769606), TOBN(0x2c94a8b3, 0xd236625c)},
+          {TOBN(0x6922b9c0, 0x5c437d8e), TOBN(0x3d4ae423, 0xd8d9f3c8),
+           TOBN(0xf72c31c1, 0x2e7090a2), TOBN(0x4ac3f5f3, 0xd76a55bd)}},
+         {{TOBN(0x342508fc, 0x6b6af991), TOBN(0x0d527100, 0x1b5cebbd),
+           TOBN(0xb84740d0, 0xdd440dd7), TOBN(0x748ef841, 0x780162fd)},
+          {TOBN(0xa8dbfe0e, 0xdfc6fafb), TOBN(0xeadfdf05, 0xf7300f27),
+           TOBN(0x7d06555f, 0xfeba4ec9), TOBN(0x12c56f83, 0x9e25fa97)}},
+         {{TOBN(0x77f84203, 0xd39b8c34), TOBN(0xed8b1be6, 0x3125eddb),
+           TOBN(0x5bbf2441, 0xf6e39dc5), TOBN(0xb00f6ee6, 0x6a5d678a)},
+          {TOBN(0xba456ecf, 0x57d0ea99), TOBN(0xdcae0f58, 0x17e06c43),
+           TOBN(0x01643de4, 0x0f5b4baa), TOBN(0x2c324341, 0xd161b9be)}},
+         {{TOBN(0x80177f55, 0xe126d468), TOBN(0xed325f1f, 0x76748e09),
+           TOBN(0x6116004a, 0xcfa9bdc2), TOBN(0x2d8607e6, 0x3a9fb468)},
+          {TOBN(0x0e573e27, 0x6009d660), TOBN(0x3a525d2e, 0x8d10c5a1),
+           TOBN(0xd26cb45c, 0x3b9009a0), TOBN(0xb6b0cdc0, 0xde9d7448)}},
+         {{TOBN(0x949c9976, 0xe1337c26), TOBN(0x6faadebd, 0xd73d68e5),
+           TOBN(0x9e158614, 0xf1b768d9), TOBN(0x22dfa557, 0x9cc4f069)},
+          {TOBN(0xccd6da17, 0xbe93c6d6), TOBN(0x24866c61, 0xa504f5b9),
+           TOBN(0x2121353c, 0x8d694da1), TOBN(0x1c6ca580, 0x0140b8c6)}},
+         {{TOBN(0xc245ad8c, 0xe964021e), TOBN(0xb83bffba, 0x032b82b3),
+           TOBN(0xfaa220c6, 0x47ef9898), TOBN(0x7e8d3ac6, 0x982c948a)},
+          {TOBN(0x1faa2091, 0xbc2d124a), TOBN(0xbd54c3dd, 0x05b15ff4),
+           TOBN(0x386bf3ab, 0xc87c6fb7), TOBN(0xfb2b0563, 0xfdeb6f66)}},
+         {{TOBN(0x4e77c557, 0x5b45afb4), TOBN(0xe9ded649, 0xefb8912d),
+           TOBN(0x7ec9bbf5, 0x42f6e557), TOBN(0x2570dfff, 0x62671f00)},
+          {TOBN(0x2b3bfb78, 0x88e084bd), TOBN(0xa024b238, 0xf37fe5b4),
+           TOBN(0x44e7dc04, 0x95649aee), TOBN(0x498ca255, 0x5e7ec1d8)}},
+         {{TOBN(0x3bc766ea, 0xaaa07e86), TOBN(0x0db6facb, 0xf3608586),
+           TOBN(0xbadd2549, 0xbdc259c8), TOBN(0x95af3c6e, 0x041c649f)},
+          {TOBN(0xb36a928c, 0x02e30afb), TOBN(0x9b5356ad, 0x008a88b8),
+           TOBN(0x4b67a5f1, 0xcf1d9e9d), TOBN(0xc6542e47, 0xa5d8d8ce)}},
+         {{TOBN(0x73061fe8, 0x7adfb6cc), TOBN(0xcc826fd3, 0x98678141),
+           TOBN(0x00e758b1, 0x3c80515a), TOBN(0x6afe3247, 0x41485083)},
+          {TOBN(0x0fcb08b9, 0xb6ae8a75), TOBN(0xb8cf388d, 0x4acf51e1),
+           TOBN(0x344a5560, 0x6961b9d6), TOBN(0x1a6778b8, 0x6a97fd0c)}},
+         {{TOBN(0xd840fdc1, 0xecc4c7e3), TOBN(0xde9fe47d, 0x16db68cc),
+           TOBN(0xe95f89de, 0xa3e216aa), TOBN(0x84f1a6a4, 0x9594a8be)},
+          {TOBN(0x7ddc7d72, 0x5a7b162b), TOBN(0xc5cfda19, 0xadc817a3),
+           TOBN(0x80a5d350, 0x78b58d46), TOBN(0x93365b13, 0x82978f19)}},
+         {{TOBN(0x2e44d225, 0x26a1fc90), TOBN(0x0d6d10d2, 0x4d70705d),
+           TOBN(0xd94b6b10, 0xd70c45f4), TOBN(0x0f201022, 0xb216c079)},
+          {TOBN(0xcec966c5, 0x658fde41), TOBN(0xa8d2bc7d, 0x7e27601d),
+           TOBN(0xbfcce3e1, 0xff230be7), TOBN(0x3394ff6b, 0x0033ffb5)}},
+         {{TOBN(0xd890c509, 0x8132c9af), TOBN(0xaac4b0eb, 0x361e7868),
+           TOBN(0x5194ded3, 0xe82d15aa), TOBN(0x4550bd2e, 0x23ae6b7d)},
+          {TOBN(0x3fda318e, 0xea5399d4), TOBN(0xd989bffa, 0x91638b80),
+           TOBN(0x5ea124d0, 0xa14aa12d), TOBN(0x1fb1b899, 0x3667b944)}},
+         {{TOBN(0x95ec7969, 0x44c44d6a), TOBN(0x91df144a, 0x57e86137),
+           TOBN(0x915fd620, 0x73adac44), TOBN(0x8f01732d, 0x59a83801)},
+          {TOBN(0xec579d25, 0x3aa0a633), TOBN(0x06de5e7c, 0xc9d6d59c),
+           TOBN(0xc132f958, 0xb1ef8010), TOBN(0x29476f96, 0xe65c1a02)}},
+         {{TOBN(0x336a77c0, 0xd34c3565), TOBN(0xef1105b2, 0x1b9f1e9e),
+           TOBN(0x63e6d08b, 0xf9e08002), TOBN(0x9aff2f21, 0xc613809e)},
+          {TOBN(0xb5754f85, 0x3a80e75d), TOBN(0xde71853e, 0x6bbda681),
+           TOBN(0x86f041df, 0x8197fd7a), TOBN(0x8b332e08, 0x127817fa)}},
+         {{TOBN(0x05d99be8, 0xb9c20cda), TOBN(0x89f7aad5, 0xd5cd0c98),
+           TOBN(0x7ef936fe, 0x5bb94183), TOBN(0x92ca0753, 0xb05cd7f2)},
+          {TOBN(0x9d65db11, 0x74a1e035), TOBN(0x02628cc8, 0x13eaea92),
+           TOBN(0xf2d9e242, 0x49e4fbf2), TOBN(0x94fdfd9b, 0xe384f8b7)}},
+         {{TOBN(0x65f56054, 0x63428c6b), TOBN(0x2f7205b2, 0x90b409a5),
+           TOBN(0xf778bb78, 0xff45ae11), TOBN(0xa13045be, 0xc5ee53b2)},
+          {TOBN(0xe00a14ff, 0x03ef77fe), TOBN(0x689cd59f, 0xffef8bef),
+           TOBN(0x3578f0ed, 0x1e9ade22), TOBN(0xe99f3ec0, 0x6268b6a8)}},
+         {{TOBN(0xa2057d91, 0xea1b3c3e), TOBN(0x2d1a7053, 0xb8823a4a),
+           TOBN(0xabbb336a, 0x2cca451e), TOBN(0xcd2466e3, 0x2218bb5d)},
+          {TOBN(0x3ac1f42f, 0xc8cb762d), TOBN(0x7e312aae, 0x7690211f),
+           TOBN(0xebb9bd73, 0x45d07450), TOBN(0x207c4b82, 0x46c2213f)}},
+         {{TOBN(0x99d425c1, 0x375913ec), TOBN(0x94e45e96, 0x67908220),
+           TOBN(0xc08f3087, 0xcd67dbf6), TOBN(0xa5670fbe, 0xc0887056)},
+          {TOBN(0x6717b64a, 0x66f5b8fc), TOBN(0xd5a56aea, 0x786fec28),
+           TOBN(0xa8c3f55f, 0xc0ff4952), TOBN(0xa77fefae, 0x457ac49b)}},
+         {{TOBN(0x29882d7c, 0x98379d44), TOBN(0xd000bdfb, 0x509edc8a),
+           TOBN(0xc6f95979, 0xe66fe464), TOBN(0x504a6115, 0xfa61bde0)},
+          {TOBN(0x56b3b871, 0xeffea31a), TOBN(0x2d3de26d, 0xf0c21a54),
+           TOBN(0x21dbff31, 0x834753bf), TOBN(0xe67ecf49, 0x69269d86)}},
+         {{TOBN(0x7a176952, 0x151fe690), TOBN(0x03515804, 0x7f2adb5f),
+           TOBN(0xee794b15, 0xd1b62a8d), TOBN(0xf004ceec, 0xaae454e6)},
+          {TOBN(0x0897ea7c, 0xf0386fac), TOBN(0x3b62ff12, 0xd1fca751),
+           TOBN(0x154181df, 0x1b7a04ec), TOBN(0x2008e04a, 0xfb5847ec)}},
+         {{TOBN(0xd147148e, 0x41dbd772), TOBN(0x2b419f73, 0x22942654),
+           TOBN(0x669f30d3, 0xe9c544f7), TOBN(0x52a2c223, 0xc8540149)},
+          {TOBN(0x5da9ee14, 0x634dfb02), TOBN(0x5f074ff0, 0xf47869f3),
+           TOBN(0x74ee878d, 0xa3933acc), TOBN(0xe6510651, 0x4fe35ed1)}},
+         {{TOBN(0xb3eb9482, 0xf1012e7a), TOBN(0x51013cc0, 0xa8a566ae),
+           TOBN(0xdd5e9243, 0x47c00d3b), TOBN(0x7fde089d, 0x946bb0e5)},
+          {TOBN(0x030754fe, 0xc731b4b3), TOBN(0x12a136a4, 0x99fda062),
+           TOBN(0x7c1064b8, 0x5a1a35bc), TOBN(0xbf1f5763, 0x446c84ef)}},
+         {{TOBN(0xed29a56d, 0xa16d4b34), TOBN(0x7fba9d09, 0xdca21c4f),
+           TOBN(0x66d7ac00, 0x6d8de486), TOBN(0x60061987, 0x73a2a5e1)},
+          {TOBN(0x8b400f86, 0x9da28ff0), TOBN(0x3133f708, 0x43c4599c),
+           TOBN(0x9911c9b8, 0xee28cb0d), TOBN(0xcd7e2874, 0x8e0af61d)}},
+         {{TOBN(0x5a85f0f2, 0x72ed91fc), TOBN(0x85214f31, 0x9cd4a373),
+           TOBN(0x881fe5be, 0x1925253c), TOBN(0xd8dc98e0, 0x91e8bc76)},
+          {TOBN(0x7120affe, 0x585cc3a2), TOBN(0x724952ed, 0x735bf97a),
+           TOBN(0x5581e7dc, 0x3eb34581), TOBN(0x5cbff4f2, 0xe52ee57d)}},
+         {{TOBN(0x8d320a0e, 0x87d8cc7b), TOBN(0x9beaa7f3, 0xf1d280d0),
+           TOBN(0x7a0b9571, 0x9beec704), TOBN(0x9126332e, 0x5b7f0057)},
+          {TOBN(0x01fbc1b4, 0x8ed3bd6d), TOBN(0x35bb2c12, 0xd945eb24),
+           TOBN(0x6404694e, 0x9a8ae255), TOBN(0xb6092eec, 0x8d6abfb3)}},
+         {{TOBN(0x4d76143f, 0xcc058865), TOBN(0x7b0a5af2, 0x6e249922),
+           TOBN(0x8aef9440, 0x6a50d353), TOBN(0xe11e4bcc, 0x64f0e07a)},
+          {TOBN(0x4472993a, 0xa14a90fa), TOBN(0x7706e20c, 0xba0c51d4),
+           TOBN(0xf403292f, 0x1532672d), TOBN(0x52573bfa, 0x21829382)}},
+         {{TOBN(0x6a7bb6a9, 0x3b5bdb83), TOBN(0x08da65c0, 0xa4a72318),
+           TOBN(0xc58d22aa, 0x63eb065f), TOBN(0x1717596c, 0x1b15d685)},
+          {TOBN(0x112df0d0, 0xb266d88b), TOBN(0xf688ae97, 0x5941945a),
+           TOBN(0x487386e3, 0x7c292cac), TOBN(0x42f3b50d, 0x57d6985c)}},
+         {{TOBN(0x6da4f998, 0x6a90fc34), TOBN(0xc8f257d3, 0x65ca8a8d),
+           TOBN(0xc2feabca, 0x6951f762), TOBN(0xe1bc81d0, 0x74c323ac)},
+          {TOBN(0x1bc68f67, 0x251a2a12), TOBN(0x10d86587, 0xbe8a70dc),
+           TOBN(0xd648af7f, 0xf0f84d2e), TOBN(0xf0aa9ebc, 0x6a43ac92)}},
+         {{TOBN(0x69e3be04, 0x27596893), TOBN(0xb6bb02a6, 0x45bf452b),
+           TOBN(0x0875c11a, 0xf4c698c8), TOBN(0x6652b5c7, 0xbece3794)},
+          {TOBN(0x7b3755fd, 0x4f5c0499), TOBN(0x6ea16558, 0xb5532b38),
+           TOBN(0xd1c69889, 0xa2e96ef7), TOBN(0x9c773c3a, 0x61ed8f48)}},
+         {{TOBN(0x2b653a40, 0x9b323abc), TOBN(0xe26605e1, 0xf0e1d791),
+           TOBN(0x45d41064, 0x4a87157a), TOBN(0x8f9a78b7, 0xcbbce616)},
+          {TOBN(0xcf1e44aa, 0xc407eddd), TOBN(0x81ddd1d8, 0xa35b964f),
+           TOBN(0x473e339e, 0xfd083999), TOBN(0x6c94bdde, 0x8e796802)}},
+         {{TOBN(0x5a304ada, 0x8545d185), TOBN(0x82ae44ea, 0x738bb8cb),
+           TOBN(0x628a35e3, 0xdf87e10e), TOBN(0xd3624f3d, 0xa15b9fe3)},
+          {TOBN(0xcc44209b, 0x14be4254), TOBN(0x7d0efcbc, 0xbdbc2ea5),
+           TOBN(0x1f603362, 0x04c37bbe), TOBN(0x21f363f5, 0x56a5852c)}},
+         {{TOBN(0xa1503d1c, 0xa8501550), TOBN(0x2251e0e1, 0xd8ab10bb),
+           TOBN(0xde129c96, 0x6961c51c), TOBN(0x1f7246a4, 0x81910f68)},
+          {TOBN(0x2eb744ee, 0x5f2591f2), TOBN(0x3c47d33f, 0x5e627157),
+           TOBN(0x4d6d62c9, 0x22f3bd68), TOBN(0x6120a64b, 0xcb8df856)}},
+         {{TOBN(0x3a9ac6c0, 0x7b5d07df), TOBN(0xa92b9558, 0x7ef39783),
+           TOBN(0xe128a134, 0xab3a9b4f), TOBN(0x41c18807, 0xb1252f05)},
+          {TOBN(0xfc7ed089, 0x80ba9b1c), TOBN(0xac8dc6de, 0xc532a9dd),
+           TOBN(0xbf829cef, 0x55246809), TOBN(0x101b784f, 0x5b4ee80f)}},
+         {{TOBN(0xc09945bb, 0xb6f11603), TOBN(0x57b09dbe, 0x41d2801e),
+           TOBN(0xfba5202f, 0xa97534a8), TOBN(0x7fd8ae5f, 0xc17b9614)},
+          {TOBN(0xa50ba666, 0x78308435), TOBN(0x9572f77c, 0xd3868c4d),
+           TOBN(0x0cef7bfd, 0x2dd7aab0), TOBN(0xe7958e08, 0x2c7c79ff)}},
+         {{TOBN(0x81262e42, 0x25346689), TOBN(0x716da290, 0xb07c7004),
+           TOBN(0x35f911ea, 0xb7950ee3), TOBN(0x6fd72969, 0x261d21b5)},
+          {TOBN(0x52389803, 0x08b640d3), TOBN(0x5b0026ee, 0x887f12a1),
+           TOBN(0x20e21660, 0x742e9311), TOBN(0x0ef6d541, 0x5ff77ff7)}},
+         {{TOBN(0x969127f0, 0xf9c41135), TOBN(0xf21d60c9, 0x68a64993),
+           TOBN(0x656e5d0c, 0xe541875c), TOBN(0xf1e0f84e, 0xa1d3c233)},
+          {TOBN(0x9bcca359, 0x06002d60), TOBN(0xbe2da60c, 0x06191552),
+           TOBN(0x5da8bbae, 0x61181ec3), TOBN(0x9f04b823, 0x65806f19)}},
+         {{TOBN(0xf1604a7d, 0xd4b79bb8), TOBN(0xaee806fb, 0x52c878c8),
+           TOBN(0x34144f11, 0x8d47b8e8), TOBN(0x72edf52b, 0x949f9054)},
+          {TOBN(0xebfca84e, 0x2127015a), TOBN(0x9051d0c0, 0x9cb7cef3),
+           TOBN(0x86e8fe58, 0x296deec8), TOBN(0x33b28188, 0x41010d74)}}},
+        {{{TOBN(0x01079383, 0x171b445f), TOBN(0x9bcf21e3, 0x8131ad4c),
+           TOBN(0x8cdfe205, 0xc93987e8), TOBN(0xe63f4152, 0xc92e8c8f)},
+          {TOBN(0x729462a9, 0x30add43d), TOBN(0x62ebb143, 0xc980f05a),
+           TOBN(0x4f3954e5, 0x3b06e968), TOBN(0xfe1d75ad, 0x242cf6b1)}},
+         {{TOBN(0x5f95c6c7, 0xaf8685c8), TOBN(0xd4c1c8ce, 0x2f8f01aa),
+           TOBN(0xc44bbe32, 0x2574692a), TOBN(0xb8003478, 0xd4a4a068)},
+          {TOBN(0x7c8fc6e5, 0x2eca3cdb), TOBN(0xea1db16b, 0xec04d399),
+           TOBN(0xb05bc82e, 0x8f2bc5cf), TOBN(0x763d517f, 0xf44793d2)}},
+         {{TOBN(0x4451c1b8, 0x08bd98d0), TOBN(0x644b1cd4, 0x6575f240),
+           TOBN(0x6907eb33, 0x7375d270), TOBN(0x56c8bebd, 0xfa2286bd)},
+          {TOBN(0xc713d2ac, 0xc4632b46), TOBN(0x17da427a, 0xafd60242),
+           TOBN(0x313065b7, 0xc95c7546), TOBN(0xf8239898, 0xbf17a3de)}},
+         {{TOBN(0xf3b7963f, 0x4c830320), TOBN(0x842c7aa0, 0x903203e3),
+           TOBN(0xaf22ca0a, 0xe7327afb), TOBN(0x38e13092, 0x967609b6)},
+          {TOBN(0x73b8fb62, 0x757558f1), TOBN(0x3cc3e831, 0xf7eca8c1),
+           TOBN(0xe4174474, 0xf6331627), TOBN(0xa77989ca, 0xc3c40234)}},
+         {{TOBN(0xe5fd17a1, 0x44a081e0), TOBN(0xd797fb7d, 0xb70e296a),
+           TOBN(0x2b472b30, 0x481f719c), TOBN(0x0e632a98, 0xfe6f8c52)},
+          {TOBN(0x89ccd116, 0xc5f0c284), TOBN(0xf51088af, 0x2d987c62),
+           TOBN(0x2a2bccda, 0x4c2de6cf), TOBN(0x810f9efe, 0xf679f0f9)}},
+         {{TOBN(0xb0f394b9, 0x7ffe4b3e), TOBN(0x0b691d21, 0xe5fa5d21),
+           TOBN(0xb0bd7747, 0x9dfbbc75), TOBN(0xd2830fda, 0xfaf78b00)},
+          {TOBN(0xf78c249c, 0x52434f57), TOBN(0x4b1f7545, 0x98096dab),
+           TOBN(0x73bf6f94, 0x8ff8c0b3), TOBN(0x34aef03d, 0x454e134c)}},
+         {{TOBN(0xf8d151f4, 0xb7ac7ec5), TOBN(0xd6ceb95a, 0xe50da7d5),
+           TOBN(0xa1b492b0, 0xdc3a0eb8), TOBN(0x75157b69, 0xb3dd2863)},
+          {TOBN(0xe2c4c74e, 0xc5413d62), TOBN(0xbe329ff7, 0xbc5fc4c7),
+           TOBN(0x835a2aea, 0x60fa9dda), TOBN(0xf117f5ad, 0x7445cb87)}},
+         {{TOBN(0xae8317f4, 0xb0166f7a), TOBN(0xfbd3e3f7, 0xceec74e6),
+           TOBN(0xfdb516ac, 0xe0874bfd), TOBN(0x3d846019, 0xc681f3a3)},
+          {TOBN(0x0b12ee5c, 0x7c1620b0), TOBN(0xba68b4dd, 0x2b63c501),
+           TOBN(0xac03cd32, 0x6668c51e), TOBN(0x2a6279f7, 0x4e0bcb5b)}},
+         {{TOBN(0x17bd69b0, 0x6ae85c10), TOBN(0x72946979, 0x1dfdd3a6),
+           TOBN(0xd9a03268, 0x2c078bec), TOBN(0x41c6a658, 0xbfd68a52)},
+          {TOBN(0xcdea1024, 0x0e023900), TOBN(0xbaeec121, 0xb10d144d),
+           TOBN(0x5a600e74, 0x058ab8dc), TOBN(0x1333af21, 0xbb89ccdd)}},
+         {{TOBN(0xdf25eae0, 0x3aaba1f1), TOBN(0x2cada16e, 0x3b7144cf),
+           TOBN(0x657ee27d, 0x71ab98bc), TOBN(0x99088b4c, 0x7a6fc96e)},
+          {TOBN(0x05d5c0a0, 0x3549dbd4), TOBN(0x42cbdf8f, 0xf158c3ac),
+           TOBN(0x3fb6b3b0, 0x87edd685), TOBN(0x22071cf6, 0x86f064d0)}},
+         {{TOBN(0xd2d6721f, 0xff2811e5), TOBN(0xdb81b703, 0xfe7fae8c),
+           TOBN(0x3cfb74ef, 0xd3f1f7bb), TOBN(0x0cdbcd76, 0x16cdeb5d)},
+          {TOBN(0x4f39642a, 0x566a808c), TOBN(0x02b74454, 0x340064d6),
+           TOBN(0xfabbadca, 0x0528fa6f), TOBN(0xe4c3074c, 0xd3fc0bb6)}},
+         {{TOBN(0xb32cb8b0, 0xb796d219), TOBN(0xc3e95f4f, 0x34741dd9),
+           TOBN(0x87212125, 0x68edf6f5), TOBN(0x7a03aee4, 0xa2b9cb8e)},
+          {TOBN(0x0cd3c376, 0xf53a89aa), TOBN(0x0d8af9b1, 0x948a28dc),
+           TOBN(0xcf86a3f4, 0x902ab04f), TOBN(0x8aacb62a, 0x7f42002d)}},
+         {{TOBN(0x106985eb, 0xf62ffd52), TOBN(0xe670b54e, 0x5797bf10),
+           TOBN(0x4b405209, 0xc5e30aef), TOBN(0x12c97a20, 0x4365b5e9)},
+          {TOBN(0x104646ce, 0x1fe32093), TOBN(0x13cb4ff6, 0x3907a8c9),
+           TOBN(0x8b9f30d1, 0xd46e726b), TOBN(0xe1985e21, 0xaba0f499)}},
+         {{TOBN(0xc573dea9, 0x10a230cd), TOBN(0x24f46a93, 0xcd30f947),
+           TOBN(0xf2623fcf, 0xabe2010a), TOBN(0x3f278cb2, 0x73f00e4f)},
+          {TOBN(0xed55c67d, 0x50b920eb), TOBN(0xf1cb9a2d, 0x8e760571),
+           TOBN(0x7c50d109, 0x0895b709), TOBN(0x4207cf07, 0x190d4369)}},
+         {{TOBN(0x3b027e81, 0xc4127fe1), TOBN(0xa9f8b9ad, 0x3ae9c566),
+           TOBN(0x5ab10851, 0xacbfbba5), TOBN(0xa747d648, 0x569556f5)},
+          {TOBN(0xcc172b5c, 0x2ba97bf7), TOBN(0x15e0f77d, 0xbcfa3324),
+           TOBN(0xa345b797, 0x7686279d), TOBN(0x5a723480, 0xe38003d3)}},
+         {{TOBN(0xfd8e139f, 0x8f5fcda8), TOBN(0xf3e558c4, 0xbdee5bfd),
+           TOBN(0xd76cbaf4, 0xe33f9f77), TOBN(0x3a4c97a4, 0x71771969)},
+          {TOBN(0xda27e84b, 0xf6dce6a7), TOBN(0xff373d96, 0x13e6c2d1),
+           TOBN(0xf115193c, 0xd759a6e9), TOBN(0x3f9b7025, 0x63d2262c)}},
+         {{TOBN(0xd9764a31, 0x317cd062), TOBN(0x30779d8e, 0x199f8332),
+           TOBN(0xd8074106, 0x16b11b0b), TOBN(0x7917ab9f, 0x78aeaed8)},
+          {TOBN(0xb67a9cbe, 0x28fb1d8e), TOBN(0x2e313563, 0x136eda33),
+           TOBN(0x010b7069, 0xa371a86c), TOBN(0x44d90fa2, 0x6744e6b7)}},
+         {{TOBN(0x68190867, 0xd6b3e243), TOBN(0x9fe6cd9d, 0x59048c48),
+           TOBN(0xb900b028, 0x95731538), TOBN(0xa012062f, 0x32cae04f)},
+          {TOBN(0x8107c8bc, 0x9399d082), TOBN(0x47e8c54a, 0x41df12e2),
+           TOBN(0x14ba5117, 0xb6ef3f73), TOBN(0x22260bea, 0x81362f0b)}},
+         {{TOBN(0x90ea261e, 0x1a18cc20), TOBN(0x2192999f, 0x2321d636),
+           TOBN(0xef64d314, 0xe311b6a0), TOBN(0xd7401e4c, 0x3b54a1f5)},
+          {TOBN(0x19019983, 0x6fbca2ba), TOBN(0x46ad3293, 0x8fbffc4b),
+           TOBN(0xa142d3f6, 0x3786bf40), TOBN(0xeb5cbc26, 0xb67039fc)}},
+         {{TOBN(0x9cb0ae6c, 0x252bd479), TOBN(0x05e0f88a, 0x12b5848f),
+           TOBN(0x78f6d2b2, 0xa5c97663), TOBN(0x6f6e149b, 0xc162225c)},
+          {TOBN(0xe602235c, 0xde601a89), TOBN(0xd17bbe98, 0xf373be1f),
+           TOBN(0xcaf49a5b, 0xa8471827), TOBN(0x7e1a0a85, 0x18aaa116)}},
+         {{TOBN(0x6c833196, 0x270580c3), TOBN(0x1e233839, 0xf1c98a14),
+           TOBN(0x67b2f7b4, 0xae34e0a5), TOBN(0x47ac8745, 0xd8ce7289)},
+          {TOBN(0x2b74779a, 0x100dd467), TOBN(0x274a4337, 0x4ee50d09),
+           TOBN(0x603dcf13, 0x83608bc9), TOBN(0xcd9da6c3, 0xc89e8388)}},
+         {{TOBN(0x2660199f, 0x355116ac), TOBN(0xcc38bb59, 0xb6d18eed),
+           TOBN(0x3075f31f, 0x2f4bc071), TOBN(0x9774457f, 0x265dc57e)},
+          {TOBN(0x06a6a9c8, 0xc6db88bb), TOBN(0x6429d07f, 0x4ec98e04),
+           TOBN(0x8d05e57b, 0x05ecaa8b), TOBN(0x20f140b1, 0x7872ea7b)}},
+         {{TOBN(0xdf8c0f09, 0xca494693), TOBN(0x48d3a020, 0xf252e909),
+           TOBN(0x4c5c29af, 0x57b14b12), TOBN(0x7e6fa37d, 0xbf47ad1c)},
+          {TOBN(0x66e7b506, 0x49a0c938), TOBN(0xb72c0d48, 0x6be5f41f),
+           TOBN(0x6a6242b8, 0xb2359412), TOBN(0xcd35c774, 0x8e859480)}},
+         {{TOBN(0x12536fea, 0x87baa627), TOBN(0x58c1fec1, 0xf72aa680),
+           TOBN(0x6c29b637, 0x601e5dc9), TOBN(0x9e3c3c1c, 0xde9e01b9)},
+          {TOBN(0xefc8127b, 0x2bcfe0b0), TOBN(0x35107102, 0x2a12f50d),
+           TOBN(0x6ccd6cb1, 0x4879b397), TOBN(0xf792f804, 0xf8a82f21)}},
+         {{TOBN(0x509d4804, 0xa9b46402), TOBN(0xedddf85d, 0xc10f0850),
+           TOBN(0x928410dc, 0x4b6208aa), TOBN(0xf6229c46, 0x391012dc)},
+          {TOBN(0xc5a7c41e, 0x7727b9b6), TOBN(0x289e4e4b, 0xaa444842),
+           TOBN(0x049ba1d9, 0xe9a947ea), TOBN(0x44f9e47f, 0x83c8debc)}},
+         {{TOBN(0xfa77a1fe, 0x611f8b8e), TOBN(0xfd2e416a, 0xf518f427),
+           TOBN(0xc5fffa70, 0x114ebac3), TOBN(0xfe57c4e9, 0x5d89697b)},
+          {TOBN(0xfdd053ac, 0xb1aaf613), TOBN(0x31df210f, 0xea585a45),
+           TOBN(0x318cc10e, 0x24985034), TOBN(0x1a38efd1, 0x5f1d6130)}},
+         {{TOBN(0xbf86f237, 0x0b1e9e21), TOBN(0xb258514d, 0x1dbe88aa),
+           TOBN(0x1e38a588, 0x90c1baf9), TOBN(0x2936a01e, 0xbdb9b692)},
+          {TOBN(0xd576de98, 0x6dd5b20c), TOBN(0xb586bf71, 0x70f98ecf),
+           TOBN(0xcccf0f12, 0xc42d2fd7), TOBN(0x8717e61c, 0xfb35bd7b)}},
+         {{TOBN(0x8b1e5722, 0x35e6fc06), TOBN(0x3477728f, 0x0b3e13d5),
+           TOBN(0x150c294d, 0xaa8a7372), TOBN(0xc0291d43, 0x3bfa528a)},
+          {TOBN(0xc6c8bc67, 0xcec5a196), TOBN(0xdeeb31e4, 0x5c2e8a7c),
+           TOBN(0xba93e244, 0xfb6e1c51), TOBN(0xb9f8b71b, 0x2e28e156)}},
+         {{TOBN(0xce65a287, 0x968a2ab9), TOBN(0xe3c5ce69, 0x46bbcb1f),
+           TOBN(0xf8c835b9, 0xe7ae3f30), TOBN(0x16bbee26, 0xff72b82b)},
+          {TOBN(0x665e2017, 0xfd42cd22), TOBN(0x1e139970, 0xf8b1d2a0),
+           TOBN(0x125cda29, 0x79204932), TOBN(0x7aee94a5, 0x49c3bee5)}},
+         {{TOBN(0x68c70160, 0x89821a66), TOBN(0xf7c37678, 0x8f981669),
+           TOBN(0xd90829fc, 0x48cc3645), TOBN(0x346af049, 0xd70addfc)},
+          {TOBN(0x2057b232, 0x370bf29c), TOBN(0xf90c73ce, 0x42e650ee),
+           TOBN(0xe03386ea, 0xa126ab90), TOBN(0x0e266e7e, 0x975a087b)}},
+         {{TOBN(0x80578eb9, 0x0fca65d9), TOBN(0x7e2989ea, 0x16af45b8),
+           TOBN(0x7438212d, 0xcac75a4e), TOBN(0x38c7ca39, 0x4fef36b8)},
+          {TOBN(0x8650c494, 0xd402676a), TOBN(0x26ab5a66, 0xf72c7c48),
+           TOBN(0x4e6cb426, 0xce3a464e), TOBN(0xf8f99896, 0x2b72f841)}},
+         {{TOBN(0x8c318491, 0x1a335cc8), TOBN(0x563459ba, 0x6a5913e4),
+           TOBN(0x1b920d61, 0xc7b32919), TOBN(0x805ab8b6, 0xa02425ad)},
+          {TOBN(0x2ac512da, 0x8d006086), TOBN(0x6ca4846a, 0xbcf5c0fd),
+           TOBN(0xafea51d8, 0xac2138d7), TOBN(0xcb647545, 0x344cd443)}},
+         {{TOBN(0x0429ee8f, 0xbd7d9040), TOBN(0xee66a2de, 0x819b9c96),
+           TOBN(0x54f9ec25, 0xdea7d744), TOBN(0x2ffea642, 0x671721bb)},
+          {TOBN(0x4f19dbd1, 0x114344ea), TOBN(0x04304536, 0xfd0dbc8b),
+           TOBN(0x014b50aa, 0x29ec7f91), TOBN(0xb5fc22fe, 0xbb06014d)}},
+         {{TOBN(0x60d963a9, 0x1ee682e0), TOBN(0xdf48abc0, 0xfe85c727),
+           TOBN(0x0cadba13, 0x2e707c2d), TOBN(0xde608d3a, 0xa645aeff)},
+          {TOBN(0x05f1c28b, 0xedafd883), TOBN(0x3c362ede, 0xbd94de1f),
+           TOBN(0x8dd0629d, 0x13593e41), TOBN(0x0a5e736f, 0x766d6eaf)}},
+         {{TOBN(0xbfa92311, 0xf68cf9d1), TOBN(0xa4f9ef87, 0xc1797556),
+           TOBN(0x10d75a1f, 0x5601c209), TOBN(0x651c374c, 0x09b07361)},
+          {TOBN(0x49950b58, 0x88b5cead), TOBN(0x0ef00058, 0x6fa9dbaa),
+           TOBN(0xf51ddc26, 0x4e15f33a), TOBN(0x1f8b5ca6, 0x2ef46140)}},
+         {{TOBN(0x343ac0a3, 0xee9523f0), TOBN(0xbb75eab2, 0x975ea978),
+           TOBN(0x1bccf332, 0x107387f4), TOBN(0x790f9259, 0x9ab0062e)},
+          {TOBN(0xf1a363ad, 0x1e4f6a5f), TOBN(0x06e08b84, 0x62519a50),
+           TOBN(0x60915187, 0x7265f1ee), TOBN(0x6a80ca34, 0x93ae985e)}},
+         {{TOBN(0x81b29768, 0xaaba4864), TOBN(0xb13cabf2, 0x8d52a7d6),
+           TOBN(0xb5c36348, 0x8ead03f1), TOBN(0xc932ad95, 0x81c7c1c0)},
+          {TOBN(0x5452708e, 0xcae1e27b), TOBN(0x9dac4269, 0x1b0df648),
+           TOBN(0x233e3f0c, 0xdfcdb8bc), TOBN(0xe6ceccdf, 0xec540174)}},
+         {{TOBN(0xbd0d845e, 0x95081181), TOBN(0xcc8a7920, 0x699355d5),
+           TOBN(0x111c0f6d, 0xc3b375a8), TOBN(0xfd95bc6b, 0xfd51e0dc)},
+          {TOBN(0x4a106a26, 0x6888523a), TOBN(0x4d142bd6, 0xcb01a06d),
+           TOBN(0x79bfd289, 0xadb9b397), TOBN(0x0bdbfb94, 0xe9863914)}},
+         {{TOBN(0x29d8a229, 0x1660f6a6), TOBN(0x7f6abcd6, 0x551c042d),
+           TOBN(0x13039deb, 0x0ac3ffe8), TOBN(0xa01be628, 0xec8523fb)},
+          {TOBN(0x6ea34103, 0x0ca1c328), TOBN(0xc74114bd, 0xb903928e),
+           TOBN(0x8aa4ff4e, 0x9e9144b0), TOBN(0x7064091f, 0x7f9a4b17)}},
+         {{TOBN(0xa3f4f521, 0xe447f2c4), TOBN(0x81b8da7a, 0x604291f0),
+           TOBN(0xd680bc46, 0x7d5926de), TOBN(0x84f21fd5, 0x34a1202f)},
+          {TOBN(0x1d1e3181, 0x4e9df3d8), TOBN(0x1ca4861a, 0x39ab8d34),
+           TOBN(0x809ddeec, 0x5b19aa4a), TOBN(0x59f72f7e, 0x4d329366)}},
+         {{TOBN(0xa2f93f41, 0x386d5087), TOBN(0x40bf739c, 0xdd67d64f),
+           TOBN(0xb4494205, 0x66702158), TOBN(0xc33c65be, 0x73b1e178)},
+          {TOBN(0xcdcd657c, 0x38ca6153), TOBN(0x97f4519a, 0xdc791976),
+           TOBN(0xcc7c7f29, 0xcd6e1f39), TOBN(0x38de9cfb, 0x7e3c3932)}},
+         {{TOBN(0xe448eba3, 0x7b793f85), TOBN(0xe9f8dbf9, 0xf067e914),
+           TOBN(0xc0390266, 0xf114ae87), TOBN(0x39ed75a7, 0xcd6a8e2a)},
+          {TOBN(0xadb14848, 0x7ffba390), TOBN(0x67f8cb8b, 0x6af9bc09),
+           TOBN(0x322c3848, 0x9c7476db), TOBN(0xa320fecf, 0x52a538d6)}},
+         {{TOBN(0xe0493002, 0xb2aced2b), TOBN(0xdfba1809, 0x616bd430),
+           TOBN(0x531c4644, 0xc331be70), TOBN(0xbc04d32e, 0x90d2e450)},
+          {TOBN(0x1805a0d1, 0x0f9f142d), TOBN(0x2c44a0c5, 0x47ee5a23),
+           TOBN(0x31875a43, 0x3989b4e3), TOBN(0x6b1949fd, 0x0c063481)}},
+         {{TOBN(0x2dfb9e08, 0xbe0f4492), TOBN(0x3ff0da03, 0xe9d5e517),
+           TOBN(0x03dbe9a1, 0xf79466a8), TOBN(0x0b87bcd0, 0x15ea9932)},
+          {TOBN(0xeb64fc83, 0xab1f58ab), TOBN(0x6d9598da, 0x817edc8a),
+           TOBN(0x699cff66, 0x1d3b67e5), TOBN(0x645c0f29, 0x92635853)}},
+         {{TOBN(0x253cdd82, 0xeabaf21c), TOBN(0x82b9602a, 0x2241659e),
+           TOBN(0x2cae07ec, 0x2d9f7091), TOBN(0xbe4c720c, 0x8b48cd9b)},
+          {TOBN(0x6ce5bc03, 0x6f08d6c9), TOBN(0x36e8a997, 0xaf10bf40),
+           TOBN(0x83422d21, 0x3e10ff12), TOBN(0x7b26d3eb, 0xbcc12494)}},
+         {{TOBN(0xb240d2d0, 0xc9469ad6), TOBN(0xc4a11b4d, 0x30afa05b),
+           TOBN(0x4b604ace, 0xdd6ba286), TOBN(0x18486600, 0x3ee2864c)},
+          {TOBN(0x5869d6ba, 0x8d9ce5be), TOBN(0x0d8f68c5, 0xff4bfb0d),
+           TOBN(0xb69f210b, 0x5700cf73), TOBN(0x61f6653a, 0x6d37c135)}},
+         {{TOBN(0xff3d432b, 0x5aff5a48), TOBN(0x0d81c4b9, 0x72ba3a69),
+           TOBN(0xee879ae9, 0xfa1899ef), TOBN(0xbac7e2a0, 0x2d6acafd)},
+          {TOBN(0xd6d93f6c, 0x1c664399), TOBN(0x4c288de1, 0x5bcb135d),
+           TOBN(0x83031dab, 0x9dab7cbf), TOBN(0xfe23feb0, 0x3abbf5f0)}},
+         {{TOBN(0x9f1b2466, 0xcdedca85), TOBN(0x140bb710, 0x1a09538c),
+           TOBN(0xac8ae851, 0x5e11115d), TOBN(0x0d63ff67, 0x6f03f59e)},
+          {TOBN(0x755e5551, 0x7d234afb), TOBN(0x61c2db4e, 0x7e208fc1),
+           TOBN(0xaa9859ce, 0xf28a4b5d), TOBN(0xbdd6d4fc, 0x34af030f)}},
+         {{TOBN(0xd1c4a26d, 0x3be01cb1), TOBN(0x9ba14ffc, 0x243aa07c),
+           TOBN(0xf95cd3a9, 0xb2503502), TOBN(0xe379bc06, 0x7d2a93ab)},
+          {TOBN(0x3efc18e9, 0xd4ca8d68), TOBN(0x083558ec, 0x80bb412a),
+           TOBN(0xd903b940, 0x9645a968), TOBN(0xa499f0b6, 0x9ba6054f)}},
+         {{TOBN(0x208b573c, 0xb8349abe), TOBN(0x3baab3e5, 0x30b4fc1c),
+           TOBN(0x87e978ba, 0xcb524990), TOBN(0x3524194e, 0xccdf0e80)},
+          {TOBN(0x62711725, 0x7d4bcc42), TOBN(0xe90a3d9b, 0xb90109ba),
+           TOBN(0x3b1bdd57, 0x1323e1e0), TOBN(0xb78e9bd5, 0x5eae1599)}},
+         {{TOBN(0x0794b746, 0x9e03d278), TOBN(0x80178605, 0xd70e6297),
+           TOBN(0x171792f8, 0x99c97855), TOBN(0x11b393ee, 0xf5a86b5c)},
+          {TOBN(0x48ef6582, 0xd8884f27), TOBN(0xbd44737a, 0xbf19ba5f),
+           TOBN(0x8698de4c, 0xa42062c6), TOBN(0x8975eb80, 0x61ce9c54)}},
+         {{TOBN(0xd50e57c7, 0xd7fe71f3), TOBN(0x15342190, 0xbc97ce38),
+           TOBN(0x51bda2de, 0x4df07b63), TOBN(0xba12aeae, 0x200eb87d)},
+          {TOBN(0xabe135d2, 0xa9b4f8f6), TOBN(0x04619d65, 0xfad6d99c),
+           TOBN(0x4a6683a7, 0x7994937c), TOBN(0x7a778c8b, 0x6f94f09a)}},
+         {{TOBN(0x8c508623, 0x20a71b89), TOBN(0x241a2aed, 0x1c229165),
+           TOBN(0x352be595, 0xaaf83a99), TOBN(0x9fbfee7f, 0x1562bac8)},
+          {TOBN(0xeaf658b9, 0x5c4017e3), TOBN(0x1dc7f9e0, 0x15120b86),
+           TOBN(0xd84f13dd, 0x4c034d6f), TOBN(0x283dd737, 0xeaea3038)}},
+         {{TOBN(0x197f2609, 0xcd85d6a2), TOBN(0x6ebbc345, 0xfae60177),
+           TOBN(0xb80f031b, 0x4e12fede), TOBN(0xde55d0c2, 0x07a2186b)},
+          {TOBN(0x1fb3e37f, 0x24dcdd5a), TOBN(0x8d602da5, 0x7ed191fb),
+           TOBN(0x108fb056, 0x76023e0d), TOBN(0x70178c71, 0x459c20c0)}},
+         {{TOBN(0xfad5a386, 0x3fe54cf0), TOBN(0xa4a3ec4f, 0x02bbb475),
+           TOBN(0x1aa5ec20, 0x919d94d7), TOBN(0x5d3b63b5, 0xa81e4ab3)},
+          {TOBN(0x7fa733d8, 0x5ad3d2af), TOBN(0xfbc586dd, 0xd1ac7a37),
+           TOBN(0x282925de, 0x40779614), TOBN(0xfe0ffffb, 0xe74a242a)}},
+         {{TOBN(0x3f39e67f, 0x906151e5), TOBN(0xcea27f5f, 0x55e10649),
+           TOBN(0xdca1d4e1, 0xc17cf7b7), TOBN(0x0c326d12, 0x2fe2362d)},
+          {TOBN(0x05f7ac33, 0x7dd35df3), TOBN(0x0c3b7639, 0xc396dbdf),
+           TOBN(0x0912f5ac, 0x03b7db1c), TOBN(0x9dea4b70, 0x5c9ed4a9)}},
+         {{TOBN(0x475e6e53, 0xaae3f639), TOBN(0xfaba0e7c, 0xfc278bac),
+           TOBN(0x16f9e221, 0x9490375f), TOBN(0xaebf9746, 0xa5a7ed0a)},
+          {TOBN(0x45f9af3f, 0xf41ad5d6), TOBN(0x03c4623c, 0xb2e99224),
+           TOBN(0x82c5bb5c, 0xb3cf56aa), TOBN(0x64311819, 0x34567ed3)}},
+         {{TOBN(0xec57f211, 0x8be489ac), TOBN(0x2821895d, 0xb9a1104b),
+           TOBN(0x610dc875, 0x6064e007), TOBN(0x8e526f3f, 0x5b20d0fe)},
+          {TOBN(0x6e71ca77, 0x5b645aee), TOBN(0x3d1dcb9f, 0x800e10ff),
+           TOBN(0x36b51162, 0x189cf6de), TOBN(0x2c5a3e30, 0x6bb17353)}},
+         {{TOBN(0xc186cd3e, 0x2a6c6fbf), TOBN(0xa74516fa, 0x4bf97906),
+           TOBN(0x5b4b8f4b, 0x279d6901), TOBN(0x0c4e57b4, 0x2b573743)},
+          {TOBN(0x75fdb229, 0xb6e386b6), TOBN(0xb46793fd, 0x99deac27),
+           TOBN(0xeeec47ea, 0xcf712629), TOBN(0xe965f3c4, 0xcbc3b2dd)}},
+         {{TOBN(0x8dd1fb83, 0x425c6559), TOBN(0x7fc00ee6, 0x0af06fda),
+           TOBN(0xe98c9225, 0x33d956df), TOBN(0x0f1ef335, 0x4fbdc8a2)},
+          {TOBN(0x2abb5145, 0xb79b8ea2), TOBN(0x40fd2945, 0xbdbff288),
+           TOBN(0x6a814ac4, 0xd7185db7), TOBN(0xc4329d6f, 0xc084609a)}},
+         {{TOBN(0xc9ba7b52, 0xed1be45d), TOBN(0x891dd20d, 0xe4cd2c74),
+           TOBN(0x5a4d4a7f, 0x824139b1), TOBN(0x66c17716, 0xb873c710)},
+          {TOBN(0x5e5bc141, 0x2843c4e0), TOBN(0xd5ac4817, 0xb97eb5bf),
+           TOBN(0xc0f8af54, 0x450c95c7), TOBN(0xc91b3fa0, 0x318406c5)}},
+         {{TOBN(0x360c340a, 0xab9d97f8), TOBN(0xfb57bd07, 0x90a2d611),
+           TOBN(0x4339ae3c, 0xa6a6f7e5), TOBN(0x9c1fcd2a, 0x2feb8a10)},
+          {TOBN(0x972bcca9, 0xc7ea7432), TOBN(0x1b0b924c, 0x308076f6),
+           TOBN(0x80b2814a, 0x2a5b4ca5), TOBN(0x2f78f55b, 0x61ef3b29)}},
+         {{TOBN(0xf838744a, 0xc18a414f), TOBN(0xc611eaae, 0x903d0a86),
+           TOBN(0x94dabc16, 0x2a453f55), TOBN(0xe6f2e3da, 0x14efb279)},
+          {TOBN(0x5b7a6017, 0x9320dc3c), TOBN(0x692e382f, 0x8df6b5a4),
+           TOBN(0x3f5e15e0, 0x2d40fa90), TOBN(0xc87883ae, 0x643dd318)}},
+         {{TOBN(0x511053e4, 0x53544774), TOBN(0x834d0ecc, 0x3adba2bc),
+           TOBN(0x4215d7f7, 0xbae371f5), TOBN(0xfcfd57bf, 0x6c8663bc)},
+          {TOBN(0xded2383d, 0xd6901b1d), TOBN(0x3b49fbb4, 0xb5587dc3),
+           TOBN(0xfd44a08d, 0x07625f62), TOBN(0x3ee4d65b, 0x9de9b762)}}},
+        {{{TOBN(0x64e5137d, 0x0d63d1fa), TOBN(0x658fc052, 0x02a9d89f),
+           TOBN(0x48894874, 0x50436309), TOBN(0xe9ae30f8, 0xd598da61)},
+          {TOBN(0x2ed710d1, 0x818baf91), TOBN(0xe27e9e06, 0x8b6a0c20),
+           TOBN(0x1e28dcfb, 0x1c1a6b44), TOBN(0x883acb64, 0xd6ac57dc)}},
+         {{TOBN(0x8735728d, 0xc2c6ff70), TOBN(0x79d6122f, 0xc5dc2235),
+           TOBN(0x23f5d003, 0x19e277f9), TOBN(0x7ee84e25, 0xdded8cc7)},
+          {TOBN(0x91a8afb0, 0x63cd880a), TOBN(0x3f3ea7c6, 0x3574af60),
+           TOBN(0x0cfcdc84, 0x02de7f42), TOBN(0x62d0792f, 0xb31aa152)}},
+         {{TOBN(0x8e1b4e43, 0x8a5807ce), TOBN(0xad283893, 0xe4109a7e),
+           TOBN(0xc30cc9cb, 0xafd59dda), TOBN(0xf65f36c6, 0x3d8d8093)},
+          {TOBN(0xdf31469e, 0xa60d32b2), TOBN(0xee93df4b, 0x3e8191c8),
+           TOBN(0x9c1017c5, 0x355bdeb5), TOBN(0xd2623185, 0x8616aa28)}},
+         {{TOBN(0xb02c83f9, 0xdec31a21), TOBN(0x988c8b23, 0x6ad9d573),
+           TOBN(0x53e983ae, 0xa57be365), TOBN(0xe968734d, 0x646f834e)},
+          {TOBN(0x9137ea8f, 0x5da6309b), TOBN(0x10f3a624, 0xc1f1ce16),
+           TOBN(0x782a9ea2, 0xca440921), TOBN(0xdf94739e, 0x5b46f1b5)}},
+         {{TOBN(0x9f9be006, 0xcce85c9b), TOBN(0x360e70d6, 0xa4c7c2d3),
+           TOBN(0x2cd5beea, 0xaefa1e60), TOBN(0x64cf63c0, 0x8c3d2b6d)},
+          {TOBN(0xfb107fa3, 0xe1cf6f90), TOBN(0xb7e937c6, 0xd5e044e6),
+           TOBN(0x74e8ca78, 0xce34db9f), TOBN(0x4f8b36c1, 0x3e210bd0)}},
+         {{TOBN(0x1df165a4, 0x34a35ea8), TOBN(0x3418e0f7, 0x4d4412f6),
+           TOBN(0x5af1f8af, 0x518836c3), TOBN(0x42ceef4d, 0x130e1965)},
+          {TOBN(0x5560ca0b, 0x543a1957), TOBN(0xc33761e5, 0x886cb123),
+           TOBN(0x66624b1f, 0xfe98ed30), TOBN(0xf772f4bf, 0x1090997d)}},
+         {{TOBN(0xf4e540bb, 0x4885d410), TOBN(0x7287f810, 0x9ba5f8d7),
+           TOBN(0x22d0d865, 0xde98dfb1), TOBN(0x49ff51a1, 0xbcfbb8a3)},
+          {TOBN(0xb6b6fa53, 0x6bc3012e), TOBN(0x3d31fd72, 0x170d541d),
+           TOBN(0x8018724f, 0x4b0f4966), TOBN(0x79e7399f, 0x87dbde07)}},
+         {{TOBN(0x56f8410e, 0xf4f8b16a), TOBN(0x97241afe, 0xc47b266a),
+           TOBN(0x0a406b8e, 0x6d9c87c1), TOBN(0x803f3e02, 0xcd42ab1b)},
+          {TOBN(0x7f0309a8, 0x04dbec69), TOBN(0xa83b85f7, 0x3bbad05f),
+           TOBN(0xc6097273, 0xad8e197f), TOBN(0xc097440e, 0x5067adc1)}},
+         {{TOBN(0x730eafb6, 0x3524ff16), TOBN(0xd7f9b51e, 0x823fc6ce),
+           TOBN(0x27bd0d32, 0x443e4ac0), TOBN(0x40c59ad9, 0x4d66f217)},
+          {TOBN(0x6c33136f, 0x17c387a4), TOBN(0x5043b8d5, 0xeb86804d),
+           TOBN(0x74970312, 0x675a73c9), TOBN(0x838fdb31, 0xf16669b6)}},
+         {{TOBN(0xc507b6dd, 0x418e7ddd), TOBN(0x39888d93, 0x472f19d6),
+           TOBN(0x7eae26be, 0x0c27eb4d), TOBN(0x17b53ed3, 0xfbabb884)},
+          {TOBN(0xfc27021b, 0x2b01ae4f), TOBN(0x88462e87, 0xcf488682),
+           TOBN(0xbee096ec, 0x215e2d87), TOBN(0xeb2fea9a, 0xd242e29b)}},
+         {{TOBN(0x5d985b5f, 0xb821fc28), TOBN(0x89d2e197, 0xdc1e2ad2),
+           TOBN(0x55b566b8, 0x9030ba62), TOBN(0xe3fd41b5, 0x4f41b1c6)},
+          {TOBN(0xb738ac2e, 0xb9a96d61), TOBN(0x7f8567ca, 0x369443f4),
+           TOBN(0x8698622d, 0xf803a440), TOBN(0x2b586236, 0x8fe2f4dc)}},
+         {{TOBN(0xbbcc00c7, 0x56b95bce), TOBN(0x5ec03906, 0x616da680),
+           TOBN(0x79162ee6, 0x72214252), TOBN(0x43132b63, 0x86a892d2)},
+          {TOBN(0x4bdd3ff2, 0x2f3263bf), TOBN(0xd5b3733c, 0x9cd0a142),
+           TOBN(0x592eaa82, 0x44415ccb), TOBN(0x663e8924, 0x8d5474ea)}},
+         {{TOBN(0x8058a25e, 0x5236344e), TOBN(0x82e8df9d, 0xbda76ee6),
+           TOBN(0xdcf6efd8, 0x11cc3d22), TOBN(0x00089cda, 0x3b4ab529)},
+          {TOBN(0x91d3a071, 0xbd38a3db), TOBN(0x4ea97fc0, 0xef72b925),
+           TOBN(0x0c9fc15b, 0xea3edf75), TOBN(0x5a6297cd, 0xa4348ed3)}},
+         {{TOBN(0x0d38ab35, 0xce7c42d4), TOBN(0x9fd493ef, 0x82feab10),
+           TOBN(0x46056b6d, 0x82111b45), TOBN(0xda11dae1, 0x73efc5c3)},
+          {TOBN(0xdc740278, 0x5545a7fb), TOBN(0xbdb2601c, 0x40d507e6),
+           TOBN(0x121dfeeb, 0x7066fa58), TOBN(0x214369a8, 0x39ae8c2a)}},
+         {{TOBN(0x195709cb, 0x06e0956c), TOBN(0x4c9d254f, 0x010cd34b),
+           TOBN(0xf51e13f7, 0x0471a532), TOBN(0xe19d6791, 0x1e73054d)},
+          {TOBN(0xf702a628, 0xdb5c7be3), TOBN(0xc7141218, 0xb24dde05),
+           TOBN(0xdc18233c, 0xf29b2e2e), TOBN(0x3a6bd1e8, 0x85342dba)}},
+         {{TOBN(0x3f747fa0, 0xb311898c), TOBN(0xe2a272e4, 0xcd0eac65),
+           TOBN(0x4bba5851, 0xf914d0bc), TOBN(0x7a1a9660, 0xc4a43ee3)},
+          {TOBN(0xe5a367ce, 0xa1c8cde9), TOBN(0x9d958ba9, 0x7271abe3),
+           TOBN(0xf3ff7eb6, 0x3d1615cd), TOBN(0xa2280dce, 0xf5ae20b0)}},
+         {{TOBN(0x56dba5c1, 0xcf640147), TOBN(0xea5a2e3d, 0x5e83d118),
+           TOBN(0x04cd6b6d, 0xda24c511), TOBN(0x1c0f4671, 0xe854d214)},
+          {TOBN(0x91a6b7a9, 0x69565381), TOBN(0xdc966240, 0xdecf1f5b),
+           TOBN(0x1b22d21c, 0xfcf5d009), TOBN(0x2a05f641, 0x9021dbd5)}},
+         {{TOBN(0x8c0ed566, 0xd4312483), TOBN(0x5179a95d, 0x643e216f),
+           TOBN(0xcc185fec, 0x17044493), TOBN(0xb3063339, 0x54991a21)},
+          {TOBN(0xd801ecdb, 0x0081a726), TOBN(0x0149b0c6, 0x4fa89bbb),
+           TOBN(0xafe9065a, 0x4391b6b9), TOBN(0xedc92786, 0xd633f3a3)}},
+         {{TOBN(0xe408c24a, 0xae6a8e13), TOBN(0x85833fde, 0x9f3897ab),
+           TOBN(0x43800e7e, 0xd81a0715), TOBN(0xde08e346, 0xb44ffc5f)},
+          {TOBN(0x7094184c, 0xcdeff2e0), TOBN(0x49f9387b, 0x165eaed1),
+           TOBN(0x635d6129, 0x777c468a), TOBN(0x8c0dcfd1, 0x538c2dd8)}},
+         {{TOBN(0xd6d9d9e3, 0x7a6a308b), TOBN(0x62375830, 0x4c2767d3),
+           TOBN(0x874a8bc6, 0xf38cbeb6), TOBN(0xd94d3f1a, 0xccb6fd9e)},
+          {TOBN(0x92a9735b, 0xba21f248), TOBN(0x272ad0e5, 0x6cd1efb0),
+           TOBN(0x7437b69c, 0x05b03284), TOBN(0xe7f04702, 0x6948c225)}},
+         {{TOBN(0x8a56c04a, 0xcba2ecec), TOBN(0x0c181270, 0xe3a73e41),
+           TOBN(0x6cb34e9d, 0x03e93725), TOBN(0xf77c8713, 0x496521a9)},
+          {TOBN(0x94569183, 0xfa7f9f90), TOBN(0xf2e7aa4c, 0x8c9707ad),
+           TOBN(0xced2c9ba, 0x26c1c9a3), TOBN(0x9109fe96, 0x40197507)}},
+         {{TOBN(0x9ae868a9, 0xe9adfe1c), TOBN(0x3984403d, 0x314e39bb),
+           TOBN(0xb5875720, 0xf2fe378f), TOBN(0x33f901e0, 0xba44a628)},
+          {TOBN(0xea1125fe, 0x3652438c), TOBN(0xae9ec4e6, 0x9dd1f20b),
+           TOBN(0x1e740d9e, 0xbebf7fbd), TOBN(0x6dbd3ddc, 0x42dbe79c)}},
+         {{TOBN(0x62082aec, 0xedd36776), TOBN(0xf612c478, 0xe9859039),
+           TOBN(0xa493b201, 0x032f7065), TOBN(0xebd4d8f2, 0x4ff9b211)},
+          {TOBN(0x3f23a0aa, 0xaac4cb32), TOBN(0xea3aadb7, 0x15ed4005),
+           TOBN(0xacf17ea4, 0xafa27e63), TOBN(0x56125c1a, 0xc11fd66c)}},
+         {{TOBN(0x266344a4, 0x3794f8dc), TOBN(0xdcca923a, 0x483c5c36),
+           TOBN(0x2d6b6bbf, 0x3f9d10a0), TOBN(0xb320c5ca, 0x81d9bdf3)},
+          {TOBN(0x620e28ff, 0x47b50a95), TOBN(0x933e3b01, 0xcef03371),
+           TOBN(0xf081bf85, 0x99100153), TOBN(0x183be9a0, 0xc3a8c8d6)}},
+         {{TOBN(0x4e3ddc5a, 0xd6bbe24d), TOBN(0xc6c74630, 0x53843795),
+           TOBN(0x78193dd7, 0x65ec2d4c), TOBN(0xb8df26cc, 0xcd3c89b2)},
+          {TOBN(0x98dbe399, 0x5a483f8d), TOBN(0x72d8a957, 0x7dd3313a),
+           TOBN(0x65087294, 0xab0bd375), TOBN(0xfcd89248, 0x7c259d16)}},
+         {{TOBN(0x8a9443d7, 0x7613aa81), TOBN(0x80100800, 0x85fe6584),
+           TOBN(0x70fc4dbc, 0x7fb10288), TOBN(0xf58280d3, 0xe86beee8)},
+          {TOBN(0x14fdd82f, 0x7c978c38), TOBN(0xdf1204c1, 0x0de44d7b),
+           TOBN(0xa08a1c84, 0x4160252f), TOBN(0x591554ca, 0xc17646a5)}},
+         {{TOBN(0x214a37d6, 0xa05bd525), TOBN(0x48d5f09b, 0x07957b3c),
+           TOBN(0x0247cdcb, 0xd7109bc9), TOBN(0x40f9e4bb, 0x30599ce7)},
+          {TOBN(0xc325fa03, 0xf46ad2ec), TOBN(0x00f766cf, 0xc3e3f9ee),
+           TOBN(0xab556668, 0xd43a4577), TOBN(0x68d30a61, 0x3ee03b93)}},
+         {{TOBN(0x7ddc81ea, 0x77b46a08), TOBN(0xcf5a6477, 0xc7480699),
+           TOBN(0x43a8cb34, 0x6633f683), TOBN(0x1b867e6b, 0x92363c60)},
+          {TOBN(0x43921114, 0x1f60558e), TOBN(0xcdbcdd63, 0x2f41450e),
+           TOBN(0x7fc04601, 0xcc630e8b), TOBN(0xea7c66d5, 0x97038b43)}},
+         {{TOBN(0x7259b8a5, 0x04e99fd8), TOBN(0x98a8dd12, 0x4785549a),
+           TOBN(0x0e459a7c, 0x840552e1), TOBN(0xcdfcf4d0, 0x4bb0909e)},
+          {TOBN(0x34a86db2, 0x53758da7), TOBN(0xe643bb83, 0xeac997e1),
+           TOBN(0x96400bd7, 0x530c5b7e), TOBN(0x9f97af87, 0xb41c8b52)}},
+         {{TOBN(0x34fc8820, 0xfbeee3f9), TOBN(0x93e53490, 0x49091afd),
+           TOBN(0x764b9be5, 0x9a31f35c), TOBN(0x71f37864, 0x57e3d924)},
+          {TOBN(0x02fb34e0, 0x943aa75e), TOBN(0xa18c9c58, 0xab8ff6e4),
+           TOBN(0x080f31b1, 0x33cf0d19), TOBN(0x5c9682db, 0x083518a7)}},
+         {{TOBN(0x873d4ca6, 0xb709c3de), TOBN(0x64a84262, 0x3575b8f0),
+           TOBN(0x6275da1f, 0x020154bb), TOBN(0x97678caa, 0xd17cf1ab)},
+          {TOBN(0x8779795f, 0x951a95c3), TOBN(0xdd35b163, 0x50fccc08),
+           TOBN(0x32709627, 0x33d8f031), TOBN(0x3c5ab10a, 0x498dd85c)}},
+         {{TOBN(0xb6c185c3, 0x41dca566), TOBN(0x7de7feda, 0xd8622aa3),
+           TOBN(0x99e84d92, 0x901b6dfb), TOBN(0x30a02b0e, 0x7c4ad288)},
+          {TOBN(0xc7c81daa, 0x2fd3cf36), TOBN(0xd1319547, 0xdf89e59f),
+           TOBN(0xb2be8184, 0xcd496733), TOBN(0xd5f449eb, 0x93d3412b)}},
+         {{TOBN(0x7ea41b1b, 0x25fe531d), TOBN(0xf9797432, 0x6a1d5646),
+           TOBN(0x86067f72, 0x2bde501a), TOBN(0xf91481c0, 0x0c85e89c)},
+          {TOBN(0xca8ee465, 0xf8b05bc6), TOBN(0x1844e1cf, 0x02e83cda),
+           TOBN(0xca82114a, 0xb4dbe33b), TOBN(0x0f9f8769, 0x4eabfde2)}},
+         {{TOBN(0x4936b1c0, 0x38b27fe2), TOBN(0x63b6359b, 0xaba402df),
+           TOBN(0x40c0ea2f, 0x656bdbab), TOBN(0x9c992a89, 0x6580c39c)},
+          {TOBN(0x600e8f15, 0x2a60aed1), TOBN(0xeb089ca4, 0xe0bf49df),
+           TOBN(0x9c233d7d, 0x2d42d99a), TOBN(0x648d3f95, 0x4c6bc2fa)}},
+         {{TOBN(0xdcc383a8, 0xe1add3f3), TOBN(0xf42c0c6a, 0x4f64a348),
+           TOBN(0x2abd176f, 0x0030dbdb), TOBN(0x4de501a3, 0x7d6c215e)},
+          {TOBN(0x4a107c1f, 0x4b9a64bc), TOBN(0xa77f0ad3, 0x2496cd59),
+           TOBN(0xfb78ac62, 0x7688dffb), TOBN(0x7025a2ca, 0x67937d8e)}},
+         {{TOBN(0xfde8b2d1, 0xd1a8f4e7), TOBN(0xf5b3da47, 0x7354927c),
+           TOBN(0xe48606a3, 0xd9205735), TOBN(0xac477cc6, 0xe177b917)},
+          {TOBN(0xfb1f73d2, 0xa883239a), TOBN(0xe12572f6, 0xcc8b8357),
+           TOBN(0x9d355e9c, 0xfb1f4f86), TOBN(0x89b795f8, 0xd9f3ec6e)}},
+         {{TOBN(0x27be56f1, 0xb54398dc), TOBN(0x1890efd7, 0x3fedeed5),
+           TOBN(0x62f77f1f, 0x9c6d0140), TOBN(0x7ef0e314, 0x596f0ee4)},
+          {TOBN(0x50ca6631, 0xcc61dab3), TOBN(0x4a39801d, 0xf4866e4f),
+           TOBN(0x66c8d032, 0xae363b39), TOBN(0x22c591e5, 0x2ead66aa)}},
+         {{TOBN(0x954ba308, 0xde02a53e), TOBN(0x2a6c060f, 0xd389f357),
+           TOBN(0xe6cfcde8, 0xfbf40b66), TOBN(0x8e02fc56, 0xc6340ce1)},
+          {TOBN(0xe4957795, 0x73adb4ba), TOBN(0x7b86122c, 0xa7b03805),
+           TOBN(0x63f83512, 0x0c8e6fa6), TOBN(0x83660ea0, 0x057d7804)}},
+         {{TOBN(0xbad79105, 0x21ba473c), TOBN(0xb6c50bee, 0xded5389d),
+           TOBN(0xee2caf4d, 0xaa7c9bc0), TOBN(0xd97b8de4, 0x8c4e98a7)},
+          {TOBN(0xa9f63e70, 0xab3bbddb), TOBN(0x3898aabf, 0x2597815a),
+           TOBN(0x7659af89, 0xac15b3d9), TOBN(0xedf7725b, 0x703ce784)}},
+         {{TOBN(0x25470fab, 0xe085116b), TOBN(0x04a43375, 0x87285310),
+           TOBN(0x4e39187e, 0xe2bfd52f), TOBN(0x36166b44, 0x7d9ebc74)},
+          {TOBN(0x92ad433c, 0xfd4b322c), TOBN(0x726aa817, 0xba79ab51),
+           TOBN(0xf96eacd8, 0xc1db15eb), TOBN(0xfaf71e91, 0x0476be63)}},
+         {{TOBN(0xdd69a640, 0x641fad98), TOBN(0xb7995918, 0x29622559),
+           TOBN(0x03c6daa5, 0xde4199dc), TOBN(0x92cadc97, 0xad545eb4)},
+          {TOBN(0x1028238b, 0x256534e4), TOBN(0x73e80ce6, 0x8595409a),
+           TOBN(0x690d4c66, 0xd05dc59b), TOBN(0xc95f7b8f, 0x981dee80)}},
+         {{TOBN(0xf4337014, 0xd856ac25), TOBN(0x441bd9dd, 0xac524dca),
+           TOBN(0x640b3d85, 0x5f0499f5), TOBN(0x39cf84a9, 0xd5fda182)},
+          {TOBN(0x04e7b055, 0xb2aa95a0), TOBN(0x29e33f0a, 0x0ddf1860),
+           TOBN(0x082e74b5, 0x423f6b43), TOBN(0x217edeb9, 0x0aaa2b0f)}},
+         {{TOBN(0x58b83f35, 0x83cbea55), TOBN(0xc485ee4d, 0xbc185d70),
+           TOBN(0x833ff03b, 0x1e5f6992), TOBN(0xb5b9b9cc, 0xcf0c0dd5)},
+          {TOBN(0x7caaee8e, 0x4e9e8a50), TOBN(0x462e907b, 0x6269dafd),
+           TOBN(0x6ed5cee9, 0xfbe791c6), TOBN(0x68ca3259, 0xed430790)}},
+         {{TOBN(0x2b72bdf2, 0x13b5ba88), TOBN(0x60294c8a, 0x35ef0ac4),
+           TOBN(0x9c3230ed, 0x19b99b08), TOBN(0x560fff17, 0x6c2589aa)},
+          {TOBN(0x552b8487, 0xd6770374), TOBN(0xa373202d, 0x9a56f685),
+           TOBN(0xd3e7f907, 0x45f175d9), TOBN(0x3c2f315f, 0xd080d810)}},
+         {{TOBN(0x1130e9dd, 0x7b9520e8), TOBN(0xc078f9e2, 0x0af037b5),
+           TOBN(0x38cd2ec7, 0x1e9c104c), TOBN(0x0f684368, 0xc472fe92)},
+          {TOBN(0xd3f1b5ed, 0x6247e7ef), TOBN(0xb32d33a9, 0x396dfe21),
+           TOBN(0x46f59cf4, 0x4a9aa2c2), TOBN(0x69cd5168, 0xff0f7e41)}},
+         {{TOBN(0x3f59da0f, 0x4b3234da), TOBN(0xcf0b0235, 0xb4579ebe),
+           TOBN(0x6d1cbb25, 0x6d2476c7), TOBN(0x4f0837e6, 0x9dc30f08)},
+          {TOBN(0x9a4075bb, 0x906f6e98), TOBN(0x253bb434, 0xc761e7d1),
+           TOBN(0xde2e645f, 0x6e73af10), TOBN(0xb89a4060, 0x0c5f131c)}},
+         {{TOBN(0xd12840c5, 0xb8cc037f), TOBN(0x3d093a5b, 0x7405bb47),
+           TOBN(0x6202c253, 0x206348b8), TOBN(0xbf5d57fc, 0xc55a3ca7)},
+          {TOBN(0x89f6c90c, 0x8c3bef48), TOBN(0x23ac7623, 0x5a0a960a),
+           TOBN(0xdfbd3d6b, 0x552b42ab), TOBN(0x3ef22458, 0x132061f6)}},
+         {{TOBN(0xd74e9bda, 0xc97e6516), TOBN(0x88779360, 0xc230f49e),
+           TOBN(0xa6ec1de3, 0x1e74ea49), TOBN(0x581dcee5, 0x3fb645a2)},
+          {TOBN(0xbaef2391, 0x8f483f14), TOBN(0x6d2dddfc, 0xd137d13b),
+           TOBN(0x54cde50e, 0xd2743a42), TOBN(0x89a34fc5, 0xe4d97e67)}},
+         {{TOBN(0x13f1f5b3, 0x12e08ce5), TOBN(0xa80540b8, 0xa7f0b2ca),
+           TOBN(0x854bcf77, 0x01982805), TOBN(0xb8653ffd, 0x233bea04)},
+          {TOBN(0x8e7b8787, 0x02b0b4c9), TOBN(0x2675261f, 0x9acb170a),
+           TOBN(0x061a9d90, 0x930c14e5), TOBN(0xb59b30e0, 0xdef0abea)}},
+         {{TOBN(0x1dc19ea6, 0x0200ec7d), TOBN(0xb6f4a3f9, 0x0bce132b),
+           TOBN(0xb8d5de90, 0xf13e27e0), TOBN(0xbaee5ef0, 0x1fade16f)},
+          {TOBN(0x6f406aaa, 0xe4c6cf38), TOBN(0xab4cfe06, 0xd1369815),
+           TOBN(0x0dcffe87, 0xefd550c6), TOBN(0x9d4f59c7, 0x75ff7d39)}},
+         {{TOBN(0xb02553b1, 0x51deb6ad), TOBN(0x812399a4, 0xb1877749),
+           TOBN(0xce90f71f, 0xca6006e1), TOBN(0xc32363a6, 0xb02b6e77)},
+          {TOBN(0x02284fbe, 0xdc36c64d), TOBN(0x86c81e31, 0xa7e1ae61),
+           TOBN(0x2576c7e5, 0xb909d94a), TOBN(0x8b6f7d02, 0x818b2bb0)}},
+         {{TOBN(0xeca3ed07, 0x56faa38a), TOBN(0xa3790e6c, 0x9305bb54),
+           TOBN(0xd784eeda, 0x7bc73061), TOBN(0xbd56d369, 0x6dd50614)},
+          {TOBN(0xd6575949, 0x229a8aa9), TOBN(0xdcca8f47, 0x4595ec28),
+           TOBN(0x814305c1, 0x06ab4fe6), TOBN(0xc8c39768, 0x24f43f16)}},
+         {{TOBN(0xe2a45f36, 0x523f2b36), TOBN(0x995c6493, 0x920d93bb),
+           TOBN(0xf8afdab7, 0x90f1632b), TOBN(0x79ebbecd, 0x1c295954)},
+          {TOBN(0xc7bb3ddb, 0x79592f48), TOBN(0x67216a7b, 0x5f88e998),
+           TOBN(0xd91f098b, 0xbc01193e), TOBN(0xf7d928a5, 0xb1db83fc)}},
+         {{TOBN(0x55e38417, 0xe991f600), TOBN(0x2a91113e, 0x2981a934),
+           TOBN(0xcbc9d648, 0x06b13bde), TOBN(0xb011b6ac, 0x0755ff44)},
+          {TOBN(0x6f4cb518, 0x045ec613), TOBN(0x522d2d31, 0xc2f5930a),
+           TOBN(0x5acae1af, 0x382e65de), TOBN(0x57643067, 0x27bc966f)}},
+         {{TOBN(0x5e12705d, 0x1c7193f0), TOBN(0xf0f32f47, 0x3be8858e),
+           TOBN(0x785c3d7d, 0x96c6dfc7), TOBN(0xd75b4a20, 0xbf31795d)},
+          {TOBN(0x91acf17b, 0x342659d4), TOBN(0xe596ea34, 0x44f0378f),
+           TOBN(0x4515708f, 0xce52129d), TOBN(0x17387e1e, 0x79f2f585)}},
+         {{TOBN(0x72cfd2e9, 0x49dee168), TOBN(0x1ae05223, 0x3e2af239),
+           TOBN(0x009e75be, 0x1d94066a), TOBN(0x6cca31c7, 0x38abf413)},
+          {TOBN(0xb50bd61d, 0x9bc49908), TOBN(0x4a9b4a8c, 0xf5e2bc1e),
+           TOBN(0xeb6cc5f7, 0x946f83ac), TOBN(0x27da93fc, 0xebffab28)}},
+         {{TOBN(0xea314c96, 0x4821c8c5), TOBN(0x8de49ded, 0xa83c15f4),
+           TOBN(0x7a64cf20, 0x7af33004), TOBN(0x45f1bfeb, 0xc9627e10)},
+          {TOBN(0x878b0626, 0x54b9df60), TOBN(0x5e4fdc3c, 0xa95c0b33),
+           TOBN(0xe54a37ca, 0xc2035d8e), TOBN(0x9087cda9, 0x80f20b8c)}},
+         {{TOBN(0x36f61c23, 0x8319ade4), TOBN(0x766f287a, 0xde8cfdf8),
+           TOBN(0x48821948, 0x346f3705), TOBN(0x49a7b853, 0x16e4f4a2)},
+          {TOBN(0xb9b3f8a7, 0x5cedadfd), TOBN(0x8f562815, 0x8db2a815),
+           TOBN(0xc0b7d554, 0x01f68f95), TOBN(0x12971e27, 0x688a208e)}},
+         {{TOBN(0xc9f8b696, 0xd0ff34fc), TOBN(0x20824de2, 0x1222718c),
+           TOBN(0x7213cf9f, 0x0c95284d), TOBN(0xe2ad741b, 0xdc158240)},
+          {TOBN(0x0ee3a6df, 0x54043ccf), TOBN(0x16ff479b, 0xd84412b3),
+           TOBN(0xf6c74ee0, 0xdfc98af0), TOBN(0xa78a169f, 0x52fcd2fb)}},
+         {{TOBN(0xd8ae8746, 0x99c930e9), TOBN(0x1d33e858, 0x49e117a5),
+           TOBN(0x7581fcb4, 0x6624759f), TOBN(0xde50644f, 0x5bedc01d)},
+          {TOBN(0xbeec5d00, 0xcaf3155e), TOBN(0x672d66ac, 0xbc73e75f),
+           TOBN(0x86b9d8c6, 0x270b01db), TOBN(0xd249ef83, 0x50f55b79)}},
+         {{TOBN(0x6131d6d4, 0x73978fe3), TOBN(0xcc4e4542, 0x754b00a1),
+           TOBN(0x4e05df05, 0x57dfcfe9), TOBN(0x94b29cdd, 0x51ef6bf0)},
+          {TOBN(0xe4530cff, 0x9bc7edf2), TOBN(0x8ac236fd, 0xd3da65f3),
+           TOBN(0x0faf7d5f, 0xc8eb0b48), TOBN(0x4d2de14c, 0x660eb039)}},
+         {{TOBN(0xc006bba7, 0x60430e54), TOBN(0x10a2d0d6, 0xda3289ab),
+           TOBN(0x9c037a5d, 0xd7979c59), TOBN(0x04d1f3d3, 0xa116d944)},
+          {TOBN(0x9ff22473, 0x8a0983cd), TOBN(0x28e25b38, 0xc883cabb),
+           TOBN(0xe968dba5, 0x47a58995), TOBN(0x2c80b505, 0x774eebdf)}},
+         {{TOBN(0xee763b71, 0x4a953beb), TOBN(0x502e223f, 0x1642e7f6),
+           TOBN(0x6fe4b641, 0x61d5e722), TOBN(0x9d37c5b0, 0xdbef5316)},
+          {TOBN(0x0115ed70, 0xf8330bc7), TOBN(0x139850e6, 0x75a72789),
+           TOBN(0x27d7faec, 0xffceccc2), TOBN(0x3016a860, 0x4fd9f7f6)}},
+         {{TOBN(0xc492ec64, 0x4cd8f64c), TOBN(0x58a2d790, 0x279d7b51),
+           TOBN(0x0ced1fc5, 0x1fc75256), TOBN(0x3e658aed, 0x8f433017)},
+          {TOBN(0x0b61942e, 0x05da59eb), TOBN(0xba3d60a3, 0x0ddc3722),
+           TOBN(0x7c311cd1, 0x742e7f87), TOBN(0x6473ffee, 0xf6b01b6e)}}},
+        {{{TOBN(0x8303604f, 0x692ac542), TOBN(0xf079ffe1, 0x227b91d3),
+           TOBN(0x19f63e63, 0x15aaf9bd), TOBN(0xf99ee565, 0xf1f344fb)},
+          {TOBN(0x8a1d661f, 0xd6219199), TOBN(0x8c883bc6, 0xd48ce41c),
+           TOBN(0x1065118f, 0x3c74d904), TOBN(0x713889ee, 0x0faf8b1b)}},
+         {{TOBN(0x972b3f8f, 0x81a1b3be), TOBN(0x4f3ce145, 0xce2764a0),
+           TOBN(0xe2d0f1cc, 0x28c4f5f7), TOBN(0xdeee0c0d, 0xc7f3985b)},
+          {TOBN(0x7df4adc0, 0xd39e25c3), TOBN(0x40619820, 0xc467a080),
+           TOBN(0x440ebc93, 0x61cf5a58), TOBN(0x527729a6, 0x422ad600)}},
+         {{TOBN(0xca6c0937, 0xb1b76ba6), TOBN(0x1a2eab85, 0x4d2026dc),
+           TOBN(0xb1715e15, 0x19d9ae0a), TOBN(0xf1ad9199, 0xbac4a026)},
+          {TOBN(0x35b3dfb8, 0x07ea7b0e), TOBN(0xedf5496f, 0x3ed9eb89),
+           TOBN(0x8932e5ff, 0x2d6d08ab), TOBN(0xf314874e, 0x25bd2731)}},
+         {{TOBN(0xefb26a75, 0x3f73f449), TOBN(0x1d1c94f8, 0x8d44fc79),
+           TOBN(0x49f0fbc5, 0x3bc0dc4d), TOBN(0xb747ea0b, 0x3698a0d0)},
+          {TOBN(0x5218c3fe, 0x228d291e), TOBN(0x35b804b5, 0x43c129d6),
+           TOBN(0xfac859b8, 0xd1acc516), TOBN(0x6c10697d, 0x95d6e668)}},
+         {{TOBN(0xc38e438f, 0x0876fd4e), TOBN(0x45f0c307, 0x83d2f383),
+           TOBN(0x203cc2ec, 0xb10934cb), TOBN(0x6a8f2439, 0x2c9d46ee)},
+          {TOBN(0xf16b431b, 0x65ccde7b), TOBN(0x41e2cd18, 0x27e76a6f),
+           TOBN(0xb9c8cf8f, 0x4e3484d7), TOBN(0x64426efd, 0x8315244a)}},
+         {{TOBN(0x1c0a8e44, 0xfc94dea3), TOBN(0x34c8cdbf, 0xdad6a0b0),
+           TOBN(0x919c3840, 0x04113cef), TOBN(0xfd32fba4, 0x15490ffa)},
+          {TOBN(0x58d190f6, 0x795dcfb7), TOBN(0xfef01b03, 0x83588baf),
+           TOBN(0x9e6d1d63, 0xca1fc1c0), TOBN(0x53173f96, 0xf0a41ac9)}},
+         {{TOBN(0x2b1d402a, 0xba16f73b), TOBN(0x2fb31014, 0x8cf9b9fc),
+           TOBN(0x2d51e60e, 0x446ef7bf), TOBN(0xc731021b, 0xb91e1745)},
+          {TOBN(0x9d3b4724, 0x4fee99d4), TOBN(0x4bca48b6, 0xfac5c1ea),
+           TOBN(0x70f5f514, 0xbbea9af7), TOBN(0x751f55a5, 0x974c283a)}},
+         {{TOBN(0x6e30251a, 0xcb452fdb), TOBN(0x31ee6965, 0x50f30650),
+           TOBN(0xb0b3e508, 0x933548d9), TOBN(0xb8949a4f, 0xf4b0ef5b)},
+          {TOBN(0x208b8326, 0x3c88f3bd), TOBN(0xab147c30, 0xdb1d9989),
+           TOBN(0xed6515fd, 0x44d4df03), TOBN(0x17a12f75, 0xe72eb0c5)}},
+         {{TOBN(0x3b59796d, 0x36cf69db), TOBN(0x1219eee9, 0x56670c18),
+           TOBN(0xfe3341f7, 0x7a070d8e), TOBN(0x9b70130b, 0xa327f90c)},
+          {TOBN(0x36a32462, 0x0ae18e0e), TOBN(0x2021a623, 0x46c0a638),
+           TOBN(0x251b5817, 0xc62eb0d4), TOBN(0x87bfbcdf, 0x4c762293)}},
+         {{TOBN(0xf78ab505, 0xcdd61d64), TOBN(0x8c7a53fc, 0xc8c18857),
+           TOBN(0xa653ce6f, 0x16147515), TOBN(0x9c923aa5, 0xea7d52d5)},
+          {TOBN(0xc24709cb, 0x5c18871f), TOBN(0x7d53bec8, 0x73b3cc74),
+           TOBN(0x59264aff, 0xfdd1d4c4), TOBN(0x5555917e, 0x240da582)}},
+         {{TOBN(0xcae8bbda, 0x548f5a0e), TOBN(0x1910eaba, 0x3bbfbbe1),
+           TOBN(0xae579685, 0x7677afc3), TOBN(0x49ea61f1, 0x73ff0b5c)},
+          {TOBN(0x78655478, 0x4f7c3922), TOBN(0x95d337cd, 0x20c68eef),
+           TOBN(0x68f1e1e5, 0xdf779ab9), TOBN(0x14b491b0, 0xb5cf69a8)}},
+         {{TOBN(0x7a6cbbe0, 0x28e3fe89), TOBN(0xe7e1fee4, 0xc5aac0eb),
+           TOBN(0x7f47eda5, 0x697e5140), TOBN(0x4f450137, 0xb454921f)},
+          {TOBN(0xdb625f84, 0x95cd8185), TOBN(0x74be0ba1, 0xcdb2e583),
+           TOBN(0xaee4fd7c, 0xdd5e6de4), TOBN(0x4251437d, 0xe8101739)}},
+         {{TOBN(0x686d72a0, 0xac620366), TOBN(0x4be3fb9c, 0xb6d59344),
+           TOBN(0x6e8b44e7, 0xa1eb75b9), TOBN(0x84e39da3, 0x91a5c10c)},
+          {TOBN(0x37cc1490, 0xb38f0409), TOBN(0x02951943, 0x2c2ade82),
+           TOBN(0x9b688783, 0x1190a2d8), TOBN(0x25627d14, 0x231182ba)}},
+         {{TOBN(0x6eb550aa, 0x658a6d87), TOBN(0x1405aaa7, 0xcf9c7325),
+           TOBN(0xd147142e, 0x5c8748c9), TOBN(0x7f637e4f, 0x53ede0e0)},
+          {TOBN(0xf8ca2776, 0x14ffad2c), TOBN(0xe58fb1bd, 0xbafb6791),
+           TOBN(0x17158c23, 0xbf8f93fc), TOBN(0x7f15b373, 0x0a4a4655)}},
+         {{TOBN(0x39d4add2, 0xd842ca72), TOBN(0xa71e4391, 0x3ed96305),
+           TOBN(0x5bb09cbe, 0x6700be14), TOBN(0x68d69d54, 0xd8befcf6)},
+          {TOBN(0xa45f5367, 0x37183bcf), TOBN(0x7152b7bb, 0x3370dff7),
+           TOBN(0xcf887baa, 0xbf12525b), TOBN(0xe7ac7bdd, 0xd6d1e3cd)}},
+         {{TOBN(0x25914f78, 0x81fdad90), TOBN(0xcf638f56, 0x0d2cf6ab),
+           TOBN(0xb90bc03f, 0xcc054de5), TOBN(0x932811a7, 0x18b06350)},
+          {TOBN(0x2f00b330, 0x9bbd11ff), TOBN(0x76108a6f, 0xb4044974),
+           TOBN(0x801bb9e0, 0xa851d266), TOBN(0x0dd099be, 0xbf8990c1)}},
+         {{TOBN(0x58c5aaaa, 0xabe32986), TOBN(0x0fe9dd2a, 0x50d59c27),
+           TOBN(0x84951ff4, 0x8d307305), TOBN(0x6c23f829, 0x86529b78)},
+          {TOBN(0x50bb2218, 0x0b136a79), TOBN(0x7e2174de, 0x77a20996),
+           TOBN(0x6f00a4b9, 0xc0bb4da6), TOBN(0x89a25a17, 0xefdde8da)}},
+         {{TOBN(0xf728a27e, 0xc11ee01d), TOBN(0xf900553a, 0xe5f10dfb),
+           TOBN(0x189a83c8, 0x02ec893c), TOBN(0x3ca5bdc1, 0x23f66d77)},
+          {TOBN(0x98781537, 0x97eada9f), TOBN(0x59c50ab3, 0x10256230),
+           TOBN(0x346042d9, 0x323c69b3), TOBN(0x1b715a6d, 0x2c460449)}},
+         {{TOBN(0xa41dd476, 0x6ae06e0b), TOBN(0xcdd7888e, 0x9d42e25f),
+           TOBN(0x0f395f74, 0x56b25a20), TOBN(0xeadfe0ae, 0x8700e27e)},
+          {TOBN(0xb09d52a9, 0x69950093), TOBN(0x3525d9cb, 0x327f8d40),
+           TOBN(0xb8235a94, 0x67df886a), TOBN(0x77e4b0dd, 0x035faec2)}},
+         {{TOBN(0x115eb20a, 0x517d7061), TOBN(0x77fe3433, 0x6c2df683),
+           TOBN(0x6870ddc7, 0xcdc6fc67), TOBN(0xb1610588, 0x0b87de83)},
+          {TOBN(0x343584ca, 0xd9c4ddbe), TOBN(0xb3164f1c, 0x3d754be2),
+           TOBN(0x0731ed3a, 0xc1e6c894), TOBN(0x26327dec, 0x4f6b904c)}},
+         {{TOBN(0x9d49c6de, 0x97b5cd32), TOBN(0x40835dae, 0xb5eceecd),
+           TOBN(0xc66350ed, 0xd9ded7fe), TOBN(0x8aeebb5c, 0x7a678804)},
+          {TOBN(0x51d42fb7, 0x5b8ee9ec), TOBN(0xd7a17bdd, 0x8e3ca118),
+           TOBN(0x40d7511a, 0x2ef4400e), TOBN(0xc48990ac, 0x875a66f4)}},
+         {{TOBN(0x8de07d2a, 0x2199e347), TOBN(0xbee75556, 0x2a39e051),
+           TOBN(0x56918786, 0x916e51dc), TOBN(0xeb191313, 0x4a2d89ec)},
+          {TOBN(0x6679610d, 0x37d341ed), TOBN(0x434fbb41, 0x56d51c2b),
+           TOBN(0xe54b7ee7, 0xd7492dba), TOBN(0xaa33a79a, 0x59021493)}},
+         {{TOBN(0x49fc5054, 0xe4bd6d3d), TOBN(0x09540f04, 0x5ab551d0),
+           TOBN(0x8acc9085, 0x4942d3a6), TOBN(0x231af02f, 0x2d28323b)},
+          {TOBN(0x93458cac, 0x0992c163), TOBN(0x1fef8e71, 0x888e3bb4),
+           TOBN(0x27578da5, 0xbe8c268c), TOBN(0xcc8be792, 0xe805ec00)}},
+         {{TOBN(0x29267bae, 0xc61c3855), TOBN(0xebff429d, 0x58c1fd3b),
+           TOBN(0x22d886c0, 0x8c0b93b8), TOBN(0xca5e00b2, 0x2ddb8953)},
+          {TOBN(0xcf330117, 0xc3fed8b7), TOBN(0xd49ac6fa, 0x819c01f6),
+           TOBN(0x6ddaa6bd, 0x3c0fbd54), TOBN(0x91743068, 0x8049a2cf)}},
+         {{TOBN(0xd67f981e, 0xaff2ef81), TOBN(0xc3654d35, 0x2818ae80),
+           TOBN(0x81d05044, 0x1b2aa892), TOBN(0x2db067bf, 0x3d099328)},
+          {TOBN(0xe7c79e86, 0x703dcc97), TOBN(0xe66f9b37, 0xe133e215),
+           TOBN(0xcdf119a6, 0xe39a7a5c), TOBN(0x47c60de3, 0x876f1b61)}},
+         {{TOBN(0x6e405939, 0xd860f1b2), TOBN(0x3e9a1dbc, 0xf5ed4d4a),
+           TOBN(0x3f23619e, 0xc9b6bcbd), TOBN(0x5ee790cf, 0x734e4497)},
+          {TOBN(0xf0a834b1, 0x5bdaf9bb), TOBN(0x02cedda7, 0x4ca295f0),
+           TOBN(0x4619aa2b, 0xcb8e378c), TOBN(0xe5613244, 0xcc987ea4)}},
+         {{TOBN(0x0bc022cc, 0x76b23a50), TOBN(0x4a2793ad, 0x0a6c21ce),
+           TOBN(0x38328780, 0x89cac3f5), TOBN(0x29176f1b, 0xcba26d56)},
+          {TOBN(0x06296187, 0x4f6f59eb), TOBN(0x86e9bca9, 0x8bdc658e),
+           TOBN(0x2ca9c4d3, 0x57e30402), TOBN(0x5438b216, 0x516a09bb)}},
+         {{TOBN(0x0a6a063c, 0x7672765a), TOBN(0x37a3ce64, 0x0547b9bf),
+           TOBN(0x42c099c8, 0x98b1a633), TOBN(0xb5ab800d, 0x05ee6961)},
+          {TOBN(0xf1963f59, 0x11a5acd6), TOBN(0xbaee6157, 0x46201063),
+           TOBN(0x36d9a649, 0xa596210a), TOBN(0xaed04363, 0x1ba7138c)}},
+         {{TOBN(0xcf817d1c, 0xa4a82b76), TOBN(0x5586960e, 0xf3806be9),
+           TOBN(0x7ab67c89, 0x09dc6bb5), TOBN(0x52ace7a0, 0x114fe7eb)},
+          {TOBN(0xcd987618, 0xcbbc9b70), TOBN(0x4f06fd5a, 0x604ca5e1),
+           TOBN(0x90af14ca, 0x6dbde133), TOBN(0x1afe4322, 0x948a3264)}},
+         {{TOBN(0xa70d2ca6, 0xc44b2c6c), TOBN(0xab726799, 0x0ef87dfe),
+           TOBN(0x310f64dc, 0x2e696377), TOBN(0x49b42e68, 0x4c8126a0)},
+          {TOBN(0x0ea444c3, 0xcea0b176), TOBN(0x53a8ddf7, 0xcb269182),
+           TOBN(0xf3e674eb, 0xbbba9dcb), TOBN(0x0d2878a8, 0xd8669d33)}},
+         {{TOBN(0x04b935d5, 0xd019b6a3), TOBN(0xbb5cf88e, 0x406f1e46),
+           TOBN(0xa1912d16, 0x5b57c111), TOBN(0x9803fc21, 0x19ebfd78)},
+          {TOBN(0x4f231c9e, 0xc07764a9), TOBN(0xd93286ee, 0xb75bd055),
+           TOBN(0x83a9457d, 0x8ee6c9de), TOBN(0x04695915, 0x6087ec90)}},
+         {{TOBN(0x14c6dd8a, 0x58d6cd46), TOBN(0x9cb633b5, 0x8e6634d2),
+           TOBN(0xc1305047, 0xf81bc328), TOBN(0x12ede0e2, 0x26a177e5)},
+          {TOBN(0x332cca62, 0x065a6f4f), TOBN(0xc3a47ecd, 0x67be487b),
+           TOBN(0x741eb187, 0x0f47ed1c), TOBN(0x99e66e58, 0xe7598b14)}},
+         {{TOBN(0x6f0544ca, 0x63d0ff12), TOBN(0xe5efc784, 0xb610a05f),
+           TOBN(0xf72917b1, 0x7cad7b47), TOBN(0x3ff6ea20, 0xf2cac0c0)},
+          {TOBN(0xcc23791b, 0xf21db8b7), TOBN(0x7dac70b1, 0xd7d93565),
+           TOBN(0x682cda1d, 0x694bdaad), TOBN(0xeb88bb8c, 0x1023516d)}},
+         {{TOBN(0xc4c634b4, 0xdfdbeb1b), TOBN(0x22f5ca72, 0xb4ee4dea),
+           TOBN(0x1045a368, 0xe6524821), TOBN(0xed9e8a3f, 0x052b18b2)},
+          {TOBN(0x9b7f2cb1, 0xb961f49a), TOBN(0x7fee2ec1, 0x7b009670),
+           TOBN(0x350d8754, 0x22507a6d), TOBN(0x561bd711, 0x4db55f1d)}},
+         {{TOBN(0x4c189ccc, 0x320bbcaf), TOBN(0x568434cf, 0xdf1de48c),
+           TOBN(0x6af1b00e, 0x0fa8f128), TOBN(0xf0ba9d02, 0x8907583c)},
+          {TOBN(0x735a4004, 0x32ff9f60), TOBN(0x3dd8e4b6, 0xc25dcf33),
+           TOBN(0xf2230f16, 0x42c74cef), TOBN(0xd8117623, 0x013fa8ad)}},
+         {{TOBN(0x36822876, 0xf51fe76e), TOBN(0x8a6811cc, 0x11d62589),
+           TOBN(0xc3fc7e65, 0x46225718), TOBN(0xb7df2c9f, 0xc82fdbcd)},
+          {TOBN(0x3b1d4e52, 0xdd7b205b), TOBN(0xb6959478, 0x47a2e414),
+           TOBN(0x05e4d793, 0xefa91148), TOBN(0xb47ed446, 0xfd2e9675)}},
+         {{TOBN(0x1a7098b9, 0x04c9d9bf), TOBN(0x661e2881, 0x1b793048),
+           TOBN(0xb1a16966, 0xb01ee461), TOBN(0xbc521308, 0x2954746f)},
+          {TOBN(0xc909a0fc, 0x2477de50), TOBN(0xd80bb41c, 0x7dbd51ef),
+           TOBN(0xa85be7ec, 0x53294905), TOBN(0x6d465b18, 0x83958f97)}},
+         {{TOBN(0x16f6f330, 0xfb6840fd), TOBN(0xfaaeb214, 0x3401e6c8),
+           TOBN(0xaf83d30f, 0xccb5b4f8), TOBN(0x22885739, 0x266dec4b)},
+          {TOBN(0x51b4367c, 0x7bc467df), TOBN(0x926562e3, 0xd842d27a),
+           TOBN(0xdfcb6614, 0x0fea14a6), TOBN(0xeb394dae, 0xf2734cd9)}},
+         {{TOBN(0x3eeae5d2, 0x11c0be98), TOBN(0xb1e6ed11, 0x814e8165),
+           TOBN(0x191086bc, 0xe52bce1c), TOBN(0x14b74cc6, 0xa75a04da)},
+          {TOBN(0x63cf1186, 0x8c060985), TOBN(0x071047de, 0x2dbd7f7c),
+           TOBN(0x4e433b8b, 0xce0942ca), TOBN(0xecbac447, 0xd8fec61d)}},
+         {{TOBN(0x8f0ed0e2, 0xebf3232f), TOBN(0xfff80f9e, 0xc52a2edd),
+           TOBN(0xad9ab433, 0x75b55fdb), TOBN(0x73ca7820, 0xe42e0c11)},
+          {TOBN(0x6dace0a0, 0xe6251b46), TOBN(0x89bc6b5c, 0x4c0d932d),
+           TOBN(0x3438cd77, 0x095da19a), TOBN(0x2f24a939, 0x8d48bdfb)}},
+         {{TOBN(0x99b47e46, 0x766561b7), TOBN(0x736600e6, 0x0ed0322a),
+           TOBN(0x06a47cb1, 0x638e1865), TOBN(0x927c1c2d, 0xcb136000)},
+          {TOBN(0x29542337, 0x0cc5df69), TOBN(0x99b37c02, 0x09d649a9),
+           TOBN(0xc5f0043c, 0x6aefdb27), TOBN(0x6cdd9987, 0x1be95c27)}},
+         {{TOBN(0x69850931, 0x390420d2), TOBN(0x299c40ac, 0x0983efa4),
+           TOBN(0x3a05e778, 0xaf39aead), TOBN(0x84274408, 0x43a45193)},
+          {TOBN(0x6bcd0fb9, 0x91a711a0), TOBN(0x461592c8, 0x9f52ab17),
+           TOBN(0xb49302b4, 0xda3c6ed6), TOBN(0xc51fddc7, 0x330d7067)}},
+         {{TOBN(0x94babeb6, 0xda50d531), TOBN(0x521b840d, 0xa6a7b9da),
+           TOBN(0x5305151e, 0x404bdc89), TOBN(0x1bcde201, 0xd0d07449)},
+          {TOBN(0xf427a78b, 0x3b76a59a), TOBN(0xf84841ce, 0x07791a1b),
+           TOBN(0xebd314be, 0xbf91ed1c), TOBN(0x8e61d34c, 0xbf172943)}},
+         {{TOBN(0x1d5dc451, 0x5541b892), TOBN(0xb186ee41, 0xfc9d9e54),
+           TOBN(0x9d9f345e, 0xd5bf610d), TOBN(0x3e7ba65d, 0xf6acca9f)},
+          {TOBN(0x9dda787a, 0xa8369486), TOBN(0x09f9dab7, 0x8eb5ba53),
+           TOBN(0x5afb2033, 0xd6481bc3), TOBN(0x76f4ce30, 0xafa62104)}},
+         {{TOBN(0xa8fa00cf, 0xf4f066b5), TOBN(0x89ab5143, 0x461dafc2),
+           TOBN(0x44339ed7, 0xa3389998), TOBN(0x2ff862f1, 0xbc214903)},
+          {TOBN(0x2c88f985, 0xb05556e3), TOBN(0xcd96058e, 0x3467081e),
+           TOBN(0x7d6a4176, 0xedc637ea), TOBN(0xe1743d09, 0x36a5acdc)}},
+         {{TOBN(0x66fd72e2, 0x7eb37726), TOBN(0xf7fa264e, 0x1481a037),
+           TOBN(0x9fbd3bde, 0x45f4aa79), TOBN(0xed1e0147, 0x767c3e22)},
+          {TOBN(0x7621f979, 0x82e7abe2), TOBN(0x19eedc72, 0x45f633f8),
+           TOBN(0xe69b155e, 0x6137bf3a), TOBN(0xa0ad13ce, 0x414ee94e)}},
+         {{TOBN(0x93e3d524, 0x1c0e651a), TOBN(0xab1a6e2a, 0x02ce227e),
+           TOBN(0xe7af1797, 0x4ab27eca), TOBN(0x245446de, 0xbd444f39)},
+          {TOBN(0x59e22a21, 0x56c07613), TOBN(0x43deafce, 0xf4275498),
+           TOBN(0x10834ccb, 0x67fd0946), TOBN(0xa75841e5, 0x47406edf)}},
+         {{TOBN(0xebd6a677, 0x7b0ac93d), TOBN(0xa6e37b0d, 0x78f5e0d7),
+           TOBN(0x2516c096, 0x76f5492b), TOBN(0x1e4bf888, 0x9ac05f3a)},
+          {TOBN(0xcdb42ce0, 0x4df0ba2b), TOBN(0x935d5cfd, 0x5062341b),
+           TOBN(0x8a303333, 0x82acac20), TOBN(0x429438c4, 0x5198b00e)}},
+         {{TOBN(0x1d083bc9, 0x049d33fa), TOBN(0x58b82dda, 0x946f67ff),
+           TOBN(0xac3e2db8, 0x67a1d6a3), TOBN(0x62e6bead, 0x1798aac8)},
+          {TOBN(0xfc85980f, 0xde46c58c), TOBN(0xa7f69379, 0x69c8d7be),
+           TOBN(0x23557927, 0x837b35ec), TOBN(0x06a933d8, 0xe0790c0c)}},
+         {{TOBN(0x827c0e9b, 0x077ff55d), TOBN(0x53977798, 0xbb26e680),
+           TOBN(0x59530874, 0x1d9cb54f), TOBN(0xcca3f449, 0x4aac53ef)},
+          {TOBN(0x11dc5c87, 0xa07eda0f), TOBN(0xc138bccf, 0xfd6400c8),
+           TOBN(0x549680d3, 0x13e5da72), TOBN(0xc93eed82, 0x4540617e)}},
+         {{TOBN(0xfd3db157, 0x4d0b75c0), TOBN(0x9716eb42, 0x6386075b),
+           TOBN(0x0639605c, 0x817b2c16), TOBN(0x09915109, 0xf1e4f201)},
+          {TOBN(0x35c9a928, 0x5cca6c3b), TOBN(0xb25f7d1a, 0x3505c900),
+           TOBN(0xeb9f7d20, 0x630480c4), TOBN(0xc3c7b8c6, 0x2a1a501c)}},
+         {{TOBN(0x3f99183c, 0x5a1f8e24), TOBN(0xfdb118fa, 0x9dd255f0),
+           TOBN(0xb9b18b90, 0xc27f62a6), TOBN(0xe8f732f7, 0x396ec191)},
+          {TOBN(0x524a2d91, 0x0be786ab), TOBN(0x5d32adef, 0x0ac5a0f5),
+           TOBN(0x9b53d4d6, 0x9725f694), TOBN(0x032a76c6, 0x0510ba89)}},
+         {{TOBN(0x840391a3, 0xebeb1544), TOBN(0x44b7b88c, 0x3ed73ac3),
+           TOBN(0xd24bae7a, 0x256cb8b3), TOBN(0x7ceb151a, 0xe394cb12)},
+          {TOBN(0xbd6b66d0, 0x5bc1e6a8), TOBN(0xec70cecb, 0x090f07bf),
+           TOBN(0x270644ed, 0x7d937589), TOBN(0xee9e1a3d, 0x5f1dccfe)}},
+         {{TOBN(0xb0d40a84, 0x745b98d2), TOBN(0xda429a21, 0x2556ed40),
+           TOBN(0xf676eced, 0x85148cb9), TOBN(0x5a22d40c, 0xded18936)},
+          {TOBN(0x3bc4b9e5, 0x70e8a4ce), TOBN(0xbfd1445b, 0x9eae0379),
+           TOBN(0xf23f2c0c, 0x1a0bd47e), TOBN(0xa9c0bb31, 0xe1845531)}},
+         {{TOBN(0x9ddc4d60, 0x0a4c3f6b), TOBN(0xbdfaad79, 0x2c15ef44),
+           TOBN(0xce55a236, 0x7f484acc), TOBN(0x08653ca7, 0x055b1f15)},
+          {TOBN(0x2efa8724, 0x538873a3), TOBN(0x09299e5d, 0xace1c7e7),
+           TOBN(0x07afab66, 0xade332ba), TOBN(0x9be1fdf6, 0x92dd71b7)}},
+         {{TOBN(0xa49b5d59, 0x5758b11c), TOBN(0x0b852893, 0xc8654f40),
+           TOBN(0xb63ef6f4, 0x52379447), TOBN(0xd4957d29, 0x105e690c)},
+          {TOBN(0x7d484363, 0x646559b0), TOBN(0xf4a8273c, 0x49788a8e),
+           TOBN(0xee406cb8, 0x34ce54a9), TOBN(0x1e1c260f, 0xf86fda9b)}},
+         {{TOBN(0xe150e228, 0xcf6a4a81), TOBN(0x1fa3b6a3, 0x1b488772),
+           TOBN(0x1e6ff110, 0xc5a9c15b), TOBN(0xc6133b91, 0x8ad6aa47)},
+          {TOBN(0x8ac5d55c, 0x9dffa978), TOBN(0xba1d1c1d, 0x5f3965f2),
+           TOBN(0xf969f4e0, 0x7732b52f), TOBN(0xfceecdb5, 0xa5172a07)}},
+         {{TOBN(0xb0120a5f, 0x10f2b8f5), TOBN(0xc83a6cdf, 0x5c4c2f63),
+           TOBN(0x4d47a491, 0xf8f9c213), TOBN(0xd9e1cce5, 0xd3f1bbd5)},
+          {TOBN(0x0d91bc7c, 0xaba7e372), TOBN(0xfcdc74c8, 0xdfd1a2db),
+           TOBN(0x05efa800, 0x374618e5), TOBN(0x11216969, 0x15a7925e)}},
+         {{TOBN(0xd4c89823, 0xf6021c5d), TOBN(0x880d5e84, 0xeff14423),
+           TOBN(0x6523bc5a, 0x6dcd1396), TOBN(0xd1acfdfc, 0x113c978b)},
+          {TOBN(0xb0c164e8, 0xbbb66840), TOBN(0xf7f4301e, 0x72b58459),
+           TOBN(0xc29ad4a6, 0xa638e8ec), TOBN(0xf5ab8961, 0x46b78699)}},
+         {{TOBN(0x9dbd7974, 0x0e954750), TOBN(0x0121de88, 0x64f9d2c6),
+           TOBN(0x2e597b42, 0xd985232e), TOBN(0x55b6c3c5, 0x53451777)},
+          {TOBN(0xbb53e547, 0x519cb9fb), TOBN(0xf134019f, 0x8428600d),
+           TOBN(0x5a473176, 0xe081791a), TOBN(0x2f3e2263, 0x35fb0c08)}},
+         {{TOBN(0xb28c3017, 0x73d273b0), TOBN(0xccd21076, 0x7721ef9a),
+           TOBN(0x054cc292, 0xb650dc39), TOBN(0x662246de, 0x6188045e)},
+          {TOBN(0x904b52fa, 0x6b83c0d1), TOBN(0xa72df267, 0x97e9cd46),
+           TOBN(0x886b43cd, 0x899725e4), TOBN(0x2b651688, 0xd849ff22)}},
+         {{TOBN(0x60479b79, 0x02f34533), TOBN(0x5e354c14, 0x0c77c148),
+           TOBN(0xb4bb7581, 0xa8537c78), TOBN(0x188043d7, 0xefe1495f)},
+          {TOBN(0x9ba12f42, 0x8c1d5026), TOBN(0x2e0c8a26, 0x93d4aaab),
+           TOBN(0xbdba7b8b, 0xaa57c450), TOBN(0x140c9ad6, 0x9bbdafef)}},
+         {{TOBN(0x2067aa42, 0x25ac0f18), TOBN(0xf7b1295b, 0x04d1fbf3),
+           TOBN(0x14829111, 0xa4b04824), TOBN(0x2ce3f192, 0x33bd5e91)},
+          {TOBN(0x9c7a1d55, 0x8f2e1b72), TOBN(0xfe932286, 0x302aa243),
+           TOBN(0x497ca7b4, 0xd4be9554), TOBN(0xb8e821b8, 0xe0547a6e)}},
+         {{TOBN(0xfb2838be, 0x67e573e0), TOBN(0x05891db9, 0x4084c44b),
+           TOBN(0x91311373, 0x96c1c2c5), TOBN(0x6aebfa3f, 0xd958444b)},
+          {TOBN(0xac9cdce9, 0xe56e55c1), TOBN(0x7148ced3, 0x2caa46d0),
+           TOBN(0x2e10c7ef, 0xb61fe8eb), TOBN(0x9fd835da, 0xff97cf4d)}}},
+        {{{TOBN(0xa36da109, 0x081e9387), TOBN(0xfb9780d7, 0x8c935828),
+           TOBN(0xd5940332, 0xe540b015), TOBN(0xc9d7b51b, 0xe0f466fa)},
+          {TOBN(0xfaadcd41, 0xd6d9f671), TOBN(0xba6c1e28, 0xb1a2ac17),
+           TOBN(0x066a7833, 0xed201e5f), TOBN(0x19d99719, 0xf90f462b)}},
+         {{TOBN(0xf431f462, 0x060b5f61), TOBN(0xa56f46b4, 0x7bd057c2),
+           TOBN(0x348dca6c, 0x47e1bf65), TOBN(0x9a38783e, 0x41bcf1ff)},
+          {TOBN(0x7a5d33a9, 0xda710718), TOBN(0x5a779987, 0x2e0aeaf6),
+           TOBN(0xca87314d, 0x2d29d187), TOBN(0xfa0edc3e, 0xc687d733)}},
+         {{TOBN(0x9df33621, 0x6a31e09b), TOBN(0xde89e44d, 0xc1350e35),
+           TOBN(0x29214871, 0x4ca0cf52), TOBN(0xdf379672, 0x0b88a538)},
+          {TOBN(0xc92a510a, 0x2591d61b), TOBN(0x79aa87d7, 0x585b447b),
+           TOBN(0xf67db604, 0xe5287f77), TOBN(0x1697c8bf, 0x5efe7a80)}},
+         {{TOBN(0x1c894849, 0xcb198ac7), TOBN(0xa884a93d, 0x0f264665),
+           TOBN(0x2da964ef, 0x9b200678), TOBN(0x3c351b87, 0x009834e6)},
+          {TOBN(0xafb2ef9f, 0xe2c4b44b), TOBN(0x580f6c47, 0x3326790c),
+           TOBN(0xb8480521, 0x0b02264a), TOBN(0x8ba6f9e2, 0x42a194e2)}},
+         {{TOBN(0xfc87975f, 0x8fb54738), TOBN(0x35160788, 0x27c3ead3),
+           TOBN(0x834116d2, 0xb74a085a), TOBN(0x53c99a73, 0xa62fe996)},
+          {TOBN(0x87585be0, 0x5b81c51b), TOBN(0x925bafa8, 0xbe0852b7),
+           TOBN(0x76a4fafd, 0xa84d19a7), TOBN(0x39a45982, 0x585206d4)}},
+         {{TOBN(0x499b6ab6, 0x5eb03c0e), TOBN(0xf19b7954, 0x72bc3fde),
+           TOBN(0xa86b5b9c, 0x6e3a80d2), TOBN(0xe4377508, 0x6d42819f)},
+          {TOBN(0xc1663650, 0xbb3ee8a3), TOBN(0x75eb14fc, 0xb132075f),
+           TOBN(0xa8ccc906, 0x7ad834f6), TOBN(0xea6a2474, 0xe6e92ffd)}},
+         {{TOBN(0x9d72fd95, 0x0f8d6758), TOBN(0xcb84e101, 0x408c07dd),
+           TOBN(0xb9114bfd, 0xa5e23221), TOBN(0x358b5fe2, 0xe94e742c)},
+          {TOBN(0x1c0577ec, 0x95f40e75), TOBN(0xf0155451, 0x3d73f3d6),
+           TOBN(0x9d55cd67, 0xbd1b9b66), TOBN(0x63e86e78, 0xaf8d63c7)}},
+         {{TOBN(0x39d934ab, 0xd3c095f1), TOBN(0x04b261be, 0xe4b76d71),
+           TOBN(0x1d2e6970, 0xe73e6984), TOBN(0x879fb23b, 0x5e5fcb11)},
+          {TOBN(0x11506c72, 0xdfd75490), TOBN(0x3a97d085, 0x61bcf1c1),
+           TOBN(0x43201d82, 0xbf5e7007), TOBN(0x7f0ac52f, 0x798232a7)}},
+         {{TOBN(0x2715cbc4, 0x6eb564d4), TOBN(0x8d6c752c, 0x9e570e29),
+           TOBN(0xf80247c8, 0x9ef5fd5d), TOBN(0xc3c66b46, 0xd53eb514)},
+          {TOBN(0x9666b401, 0x0f87de56), TOBN(0xce62c06f, 0xc6c603b5),
+           TOBN(0xae7b4c60, 0x7e4fc942), TOBN(0x38ac0b77, 0x663a9c19)}},
+         {{TOBN(0xcb4d20ee, 0x4b049136), TOBN(0x8b63bf12, 0x356a4613),
+           TOBN(0x1221aef6, 0x70e08128), TOBN(0xe62d8c51, 0x4acb6b16)},
+          {TOBN(0x71f64a67, 0x379e7896), TOBN(0xb25237a2, 0xcafd7fa5),
+           TOBN(0xf077bd98, 0x3841ba6a), TOBN(0xc4ac0244, 0x3cd16e7e)}},
+         {{TOBN(0x548ba869, 0x21fea4ca), TOBN(0xd36d0817, 0xf3dfdac1),
+           TOBN(0x09d8d71f, 0xf4685faf), TOBN(0x8eff66be, 0xc52c459a)},
+          {TOBN(0x182faee7, 0x0b57235e), TOBN(0xee3c39b1, 0x0106712b),
+           TOBN(0x5107331f, 0xc0fcdcb0), TOBN(0x669fb9dc, 0xa51054ba)}},
+         {{TOBN(0xb25101fb, 0x319d7682), TOBN(0xb0293129, 0x0a982fee),
+           TOBN(0x51c1c9b9, 0x0261b344), TOBN(0x0e008c5b, 0xbfd371fa)},
+          {TOBN(0xd866dd1c, 0x0278ca33), TOBN(0x666f76a6, 0xe5aa53b1),
+           TOBN(0xe5cfb779, 0x6013a2cf), TOBN(0x1d3a1aad, 0xa3521836)}},
+         {{TOBN(0xcedd2531, 0x73faa485), TOBN(0xc8ee6c4f, 0xc0a76878),
+           TOBN(0xddbccfc9, 0x2a11667d), TOBN(0x1a418ea9, 0x1c2f695a)},
+          {TOBN(0xdb11bd92, 0x51f73971), TOBN(0x3e4b3c82, 0xda2ed89f),
+           TOBN(0x9a44f3f4, 0xe73e0319), TOBN(0xd1e3de0f, 0x303431af)}},
+         {{TOBN(0x3c5604ff, 0x50f75f9c), TOBN(0x1d8eddf3, 0x7e752b22),
+           TOBN(0x0ef074dd, 0x3c9a1118), TOBN(0xd0ffc172, 0xccb86d7b)},
+          {TOBN(0xabd1ece3, 0x037d90f2), TOBN(0xe3f307d6, 0x6055856c),
+           TOBN(0x422f9328, 0x7e4c6daf), TOBN(0x902aac66, 0x334879a0)}},
+         {{TOBN(0xb6a1e7bf, 0x94cdfade), TOBN(0x6c97e1ed, 0x7fc6d634),
+           TOBN(0x662ad24d, 0xa2fb63f8), TOBN(0xf81be1b9, 0xa5928405)},
+          {TOBN(0x86d765e4, 0xd14b4206), TOBN(0xbecc2e0e, 0x8fa0db65),
+           TOBN(0xa28838e0, 0xb17fc76c), TOBN(0xe49a602a, 0xe37cf24e)}},
+         {{TOBN(0x76b4131a, 0x567193ec), TOBN(0xaf3c305a, 0xe5f6e70b),
+           TOBN(0x9587bd39, 0x031eebdd), TOBN(0x5709def8, 0x71bbe831)},
+          {TOBN(0x57059983, 0x0eb2b669), TOBN(0x4d80ce1b, 0x875b7029),
+           TOBN(0x838a7da8, 0x0364ac16), TOBN(0x2f431d23, 0xbe1c83ab)}},
+         {{TOBN(0xe56812a6, 0xf9294dd3), TOBN(0xb448d01f, 0x9b4b0d77),
+           TOBN(0xf3ae6061, 0x04e8305c), TOBN(0x2bead645, 0x94d8c63e)},
+          {TOBN(0x0a85434d, 0x84fd8b07), TOBN(0x537b983f, 0xf7a9dee5),
+           TOBN(0xedcc5f18, 0xef55bd85), TOBN(0x2041af62, 0x21c6cf8b)}},
+         {{TOBN(0x8e52874c, 0xb940c71e), TOBN(0x211935a9, 0xdb5f4b3a),
+           TOBN(0x94350492, 0x301b1dc3), TOBN(0x33d2646d, 0x29958620)},
+          {TOBN(0x16b0d64b, 0xef911404), TOBN(0x9d1f25ea, 0x9a3c5ef4),
+           TOBN(0x20f200eb, 0x4a352c78), TOBN(0x43929f2c, 0x4bd0b428)}},
+         {{TOBN(0xa5656667, 0xc7196e29), TOBN(0x7992c2f0, 0x9391be48),
+           TOBN(0xaaa97cbd, 0x9ee0cd6e), TOBN(0x51b0310c, 0x3dc8c9bf)},
+          {TOBN(0x237f8acf, 0xdd9f22cb), TOBN(0xbb1d81a1, 0xb585d584),
+           TOBN(0x8d5d85f5, 0x8c416388), TOBN(0x0d6e5a5a, 0x42fe474f)}},
+         {{TOBN(0xe7812766, 0x38235d4e), TOBN(0x1c62bd67, 0x496e3298),
+           TOBN(0x8378660c, 0x3f175bc8), TOBN(0x4d04e189, 0x17afdd4d)},
+          {TOBN(0x32a81601, 0x85a8068c), TOBN(0xdb58e4e1, 0x92b29a85),
+           TOBN(0xe8a65b86, 0xc70d8a3b), TOBN(0x5f0e6f4e, 0x98a0403b)}},
+         {{TOBN(0x08129684, 0x69ed2370), TOBN(0x34dc30bd, 0x0871ee26),
+           TOBN(0x3a5ce948, 0x7c9c5b05), TOBN(0x7d487b80, 0x43a90c87)},
+          {TOBN(0x4089ba37, 0xdd0e7179), TOBN(0x45f80191, 0xb4041811),
+           TOBN(0x1c3e1058, 0x98747ba5), TOBN(0x98c4e13a, 0x6e1ae592)}},
+         {{TOBN(0xd44636e6, 0xe82c9f9e), TOBN(0x711db87c, 0xc33a1043),
+           TOBN(0x6f431263, 0xaa8aec05), TOBN(0x43ff120d, 0x2744a4aa)},
+          {TOBN(0xd3bd892f, 0xae77779b), TOBN(0xf0fe0cc9, 0x8cdc9f82),
+           TOBN(0xca5f7fe6, 0xf1c5b1bc), TOBN(0xcc63a682, 0x44929a72)}},
+         {{TOBN(0xc7eaba0c, 0x09dbe19a), TOBN(0x2f3585ad, 0x6b5c73c2),
+           TOBN(0x8ab8924b, 0x0ae50c30), TOBN(0x17fcd27a, 0x638b30ba)},
+          {TOBN(0xaf414d34, 0x10b3d5a5), TOBN(0x09c107d2, 0x2a9accf1),
+           TOBN(0x15dac49f, 0x946a6242), TOBN(0xaec3df2a, 0xd707d642)}},
+         {{TOBN(0x2c2492b7, 0x3f894ae0), TOBN(0xf59df3e5, 0xb75f18ce),
+           TOBN(0x7cb740d2, 0x8f53cad0), TOBN(0x3eb585fb, 0xc4f01294)},
+          {TOBN(0x17da0c86, 0x32c7f717), TOBN(0xeb8c795b, 0xaf943f4c),
+           TOBN(0x4ee23fb5, 0xf67c51d2), TOBN(0xef187575, 0x68889949)}},
+         {{TOBN(0xa6b4bdb2, 0x0389168b), TOBN(0xc4ecd258, 0xea577d03),
+           TOBN(0x3a63782b, 0x55743082), TOBN(0x6f678f4c, 0xc72f08cd)},
+          {TOBN(0x553511cf, 0x65e58dd8), TOBN(0xd53b4e3e, 0xd402c0cd),
+           TOBN(0x37de3e29, 0xa037c14c), TOBN(0x86b6c516, 0xc05712aa)}},
+         {{TOBN(0x2834da3e, 0xb38dff6f), TOBN(0xbe012c52, 0xea636be8),
+           TOBN(0x292d238c, 0x61dd37f8), TOBN(0x0e54523f, 0x8f8142db)},
+          {TOBN(0xe31eb436, 0x036a05d8), TOBN(0x83e3cdff, 0x1e93c0ff),
+           TOBN(0x3fd2fe0f, 0x50821ddf), TOBN(0xc8e19b0d, 0xff9eb33b)}},
+         {{TOBN(0xc8cc943f, 0xb569a5fe), TOBN(0xad0090d4, 0xd4342d75),
+           TOBN(0x82090b4b, 0xcaeca000), TOBN(0xca39687f, 0x1bd410eb)},
+          {TOBN(0xe7bb0df7, 0x65959d77), TOBN(0x39d78218, 0x9c964999),
+           TOBN(0xd87f62e8, 0xb2415451), TOBN(0xe5efb774, 0xbed76108)}},
+         {{TOBN(0x3ea011a4, 0xe822f0d0), TOBN(0xbc647ad1, 0x5a8704f8),
+           TOBN(0xbb315b35, 0x50c6820f), TOBN(0x863dec3d, 0xb7e76bec)},
+          {TOBN(0x01ff5d3a, 0xf017bfc7), TOBN(0x20054439, 0x976b8229),
+           TOBN(0x067fca37, 0x0bbd0d3b), TOBN(0xf63dde64, 0x7f5e3d0f)}},
+         {{TOBN(0x22dbefb3, 0x2a4c94e9), TOBN(0xafbff0fe, 0x96f8278a),
+           TOBN(0x80aea0b1, 0x3503793d), TOBN(0xb2238029, 0x5f06cd29)},
+          {TOBN(0x65703e57, 0x8ec3feca), TOBN(0x06c38314, 0x393e7053),
+           TOBN(0xa0b751eb, 0x7c6734c4), TOBN(0xd2e8a435, 0xc59f0f1e)}},
+         {{TOBN(0x147d9052, 0x5e9ca895), TOBN(0x2f4dd31e, 0x972072df),
+           TOBN(0xa16fda8e, 0xe6c6755c), TOBN(0xc66826ff, 0xcf196558)},
+          {TOBN(0x1f1a76a3, 0x0cf43895), TOBN(0xa9d604e0, 0x83c3097b),
+           TOBN(0xe1908309, 0x66390e0e), TOBN(0xa50bf753, 0xb3c85eff)}},
+         {{TOBN(0x0696bdde, 0xf6a70251), TOBN(0x548b801b, 0x3c6ab16a),
+           TOBN(0x37fcf704, 0xa4d08762), TOBN(0x090b3def, 0xdff76c4e)},
+          {TOBN(0x87e8cb89, 0x69cb9158), TOBN(0x44a90744, 0x995ece43),
+           TOBN(0xf85395f4, 0x0ad9fbf5), TOBN(0x49b0f6c5, 0x4fb0c82d)}},
+         {{TOBN(0x75d9bc15, 0xadf7cccf), TOBN(0x81a3e5d6, 0xdfa1e1b0),
+           TOBN(0x8c39e444, 0x249bc17e), TOBN(0xf37dccb2, 0x8ea7fd43)},
+          {TOBN(0xda654873, 0x907fba12), TOBN(0x35daa6da, 0x4a372904),
+           TOBN(0x0564cfc6, 0x6283a6c5), TOBN(0xd09fa4f6, 0x4a9395bf)}},
+         {{TOBN(0x688e9ec9, 0xaeb19a36), TOBN(0xd913f1ce, 0xc7bfbfb4),
+           TOBN(0x797b9a3c, 0x61c2faa6), TOBN(0x2f979bec, 0x6a0a9c12)},
+          {TOBN(0xb5969d0f, 0x359679ec), TOBN(0xebcf523d, 0x079b0460),
+           TOBN(0xfd6b0008, 0x10fab870), TOBN(0x3f2edcda, 0x9373a39c)}},
+         {{TOBN(0x0d64f9a7, 0x6f568431), TOBN(0xf848c27c, 0x02f8898c),
+           TOBN(0xf418ade1, 0x260b5bd5), TOBN(0xc1f3e323, 0x6973dee8)},
+          {TOBN(0x46e9319c, 0x26c185dd), TOBN(0x6d85b7d8, 0x546f0ac4),
+           TOBN(0x427965f2, 0x247f9d57), TOBN(0xb519b636, 0xb0035f48)}},
+         {{TOBN(0x6b6163a9, 0xab87d59c), TOBN(0xff9f58c3, 0x39caaa11),
+           TOBN(0x4ac39cde, 0x3177387b), TOBN(0x5f6557c2, 0x873e77f9)},
+          {TOBN(0x67504006, 0x36a83041), TOBN(0x9b1c96ca, 0x75ef196c),
+           TOBN(0xf34283de, 0xb08c7940), TOBN(0x7ea09644, 0x1128c316)}},
+         {{TOBN(0xb510b3b5, 0x6aa39dff), TOBN(0x59b43da2, 0x9f8e4d8c),
+           TOBN(0xa8ce31fd, 0x9e4c4b9f), TOBN(0x0e20be26, 0xc1303c01)},
+          {TOBN(0x18187182, 0xe8ee47c9), TOBN(0xd9687cdb, 0x7db98101),
+           TOBN(0x7a520e4d, 0xa1e14ff6), TOBN(0x429808ba, 0x8836d572)}},
+         {{TOBN(0xa37ca60d, 0x4944b663), TOBN(0xf901f7a9, 0xa3f91ae5),
+           TOBN(0xe4e3e76e, 0x9e36e3b1), TOBN(0x9aa219cf, 0x29d93250)},
+          {TOBN(0x347fe275, 0x056a2512), TOBN(0xa4d643d9, 0xde65d95c),
+           TOBN(0x9669d396, 0x699fc3ed), TOBN(0xb598dee2, 0xcf8c6bbe)}},
+         {{TOBN(0x682ac1e5, 0xdda9e5c6), TOBN(0x4e0d3c72, 0xcaa9fc95),
+           TOBN(0x17faaade, 0x772bea44), TOBN(0x5ef8428c, 0xab0009c8)},
+          {TOBN(0xcc4ce47a, 0x460ff016), TOBN(0xda6d12bf, 0x725281cb),
+           TOBN(0x44c67848, 0x0223aad2), TOBN(0x6e342afa, 0x36256e28)}},
+         {{TOBN(0x1400bb0b, 0x93a37c04), TOBN(0x62b1bc9b, 0xdd10bd96),
+           TOBN(0x7251adeb, 0x0dac46b7), TOBN(0x7d33b92e, 0x7be4ef51)},
+          {TOBN(0x28b2a94b, 0xe61fa29a), TOBN(0x4b2be13f, 0x06422233),
+           TOBN(0x36d6d062, 0x330d8d37), TOBN(0x5ef80e1e, 0xb28ca005)}},
+         {{TOBN(0x174d4699, 0x6d16768e), TOBN(0x9fc4ff6a, 0x628bf217),
+           TOBN(0x77705a94, 0x154e490d), TOBN(0x9d96dd28, 0x8d2d997a)},
+          {TOBN(0x77e2d9d8, 0xce5d72c4), TOBN(0x9d06c5a4, 0xc11c714f),
+           TOBN(0x02aa5136, 0x79e4a03e), TOBN(0x1386b3c2, 0x030ff28b)}},
+         {{TOBN(0xfe82e8a6, 0xfb283f61), TOBN(0x7df203e5, 0xf3abc3fb),
+           TOBN(0xeec7c351, 0x3a4d3622), TOBN(0xf7d17dbf, 0xdf762761)},
+          {TOBN(0xc3956e44, 0x522055f0), TOBN(0xde3012db, 0x8fa748db),
+           TOBN(0xca9fcb63, 0xbf1dcc14), TOBN(0xa56d9dcf, 0xbe4e2f3a)}},
+         {{TOBN(0xb86186b6, 0x8bcec9c2), TOBN(0x7cf24df9, 0x680b9f06),
+           TOBN(0xc46b45ea, 0xc0d29281), TOBN(0xfff42bc5, 0x07b10e12)},
+          {TOBN(0x12263c40, 0x4d289427), TOBN(0x3d5f1899, 0xb4848ec4),
+           TOBN(0x11f97010, 0xd040800c), TOBN(0xb4c5f529, 0x300feb20)}},
+         {{TOBN(0xcc543f8f, 0xde94fdcb), TOBN(0xe96af739, 0xc7c2f05e),
+           TOBN(0xaa5e0036, 0x882692e1), TOBN(0x09c75b68, 0x950d4ae9)},
+          {TOBN(0x62f63df2, 0xb5932a7a), TOBN(0x2658252e, 0xde0979ad),
+           TOBN(0x2a19343f, 0xb5e69631), TOBN(0x718c7501, 0x525b666b)}},
+         {{TOBN(0x26a42d69, 0xea40dc3a), TOBN(0xdc84ad22, 0xaecc018f),
+           TOBN(0x25c36c7b, 0x3270f04a), TOBN(0x46ba6d47, 0x50fa72ed)},
+          {TOBN(0x6c37d1c5, 0x93e58a8e), TOBN(0xa2394731, 0x120c088c),
+           TOBN(0xc3be4263, 0xcb6e86da), TOBN(0x2c417d36, 0x7126d038)}},
+         {{TOBN(0x5b70f9c5, 0x8b6f8efa), TOBN(0x671a2faa, 0x37718536),
+           TOBN(0xd3ced3c6, 0xb539c92b), TOBN(0xe56f1bd9, 0xa31203c2)},
+          {TOBN(0x8b096ec4, 0x9ff3c8eb), TOBN(0x2deae432, 0x43491cea),
+           TOBN(0x2465c6eb, 0x17943794), TOBN(0x5d267e66, 0x20586843)}},
+         {{TOBN(0x9d3d116d, 0xb07159d0), TOBN(0xae07a67f, 0xc1896210),
+           TOBN(0x8fc84d87, 0xbb961579), TOBN(0x30009e49, 0x1c1f8dd6)},
+          {TOBN(0x8a8caf22, 0xe3132819), TOBN(0xcffa197c, 0xf23ab4ff),
+           TOBN(0x58103a44, 0x205dd687), TOBN(0x57b796c3, 0x0ded67a2)}},
+         {{TOBN(0x0b9c3a6c, 0xa1779ad7), TOBN(0xa33cfe2e, 0x357c09c5),
+           TOBN(0x2ea29315, 0x3db4a57e), TOBN(0x91959695, 0x8ebeb52e)},
+          {TOBN(0x118db9a6, 0xe546c879), TOBN(0x8e996df4, 0x6295c8d6),
+           TOBN(0xdd990484, 0x55ec806b), TOBN(0x24f291ca, 0x165c1035)}},
+         {{TOBN(0xcca523bb, 0x440e2229), TOBN(0x324673a2, 0x73ef4d04),
+           TOBN(0xaf3adf34, 0x3e11ec39), TOBN(0x6136d7f1, 0xdc5968d3)},
+          {TOBN(0x7a7b2899, 0xb053a927), TOBN(0x3eaa2661, 0xae067ecd),
+           TOBN(0x8549b9c8, 0x02779cd9), TOBN(0x061d7940, 0xc53385ea)}},
+         {{TOBN(0x3e0ba883, 0xf06d18bd), TOBN(0x4ba6de53, 0xb2700843),
+           TOBN(0xb966b668, 0x591a9e4d), TOBN(0x93f67567, 0x7f4fa0ed)},
+          {TOBN(0x5a02711b, 0x4347237b), TOBN(0xbc041e2f, 0xe794608e),
+           TOBN(0x55af10f5, 0x70f73d8c), TOBN(0xd2d4d4f7, 0xbb7564f7)}},
+         {{TOBN(0xd7d27a89, 0xb3e93ce7), TOBN(0xf7b5a875, 0x5d3a2c1b),
+           TOBN(0xb29e68a0, 0x255b218a), TOBN(0xb533837e, 0x8af76754)},
+          {TOBN(0xd1b05a73, 0x579fab2e), TOBN(0xb41055a1, 0xecd74385),
+           TOBN(0xb2369274, 0x445e9115), TOBN(0x2972a7c4, 0xf520274e)}},
+         {{TOBN(0x6c08334e, 0xf678e68a), TOBN(0x4e4160f0, 0x99b057ed),
+           TOBN(0x3cfe11b8, 0x52ccb69a), TOBN(0x2fd1823a, 0x21c8f772)},
+          {TOBN(0xdf7f072f, 0x3298f055), TOBN(0x8c0566f9, 0xfec74a6e),
+           TOBN(0xe549e019, 0x5bb4d041), TOBN(0x7c3930ba, 0x9208d850)}},
+         {{TOBN(0xe07141fc, 0xaaa2902b), TOBN(0x539ad799, 0xe4f69ad3),
+           TOBN(0xa6453f94, 0x813f9ffd), TOBN(0xc58d3c48, 0x375bc2f7)},
+          {TOBN(0xb3326fad, 0x5dc64e96), TOBN(0x3aafcaa9, 0xb240e354),
+           TOBN(0x1d1b0903, 0xaca1e7a9), TOBN(0x4ceb9767, 0x1211b8a0)}},
+         {{TOBN(0xeca83e49, 0xe32a858e), TOBN(0x4c32892e, 0xae907bad),
+           TOBN(0xd5b42ab6, 0x2eb9b494), TOBN(0x7fde3ee2, 0x1eabae1b)},
+          {TOBN(0x13b5ab09, 0xcaf54957), TOBN(0xbfb028be, 0xe5f5d5d5),
+           TOBN(0x928a0650, 0x2003e2c0), TOBN(0x90793aac, 0x67476843)}},
+         {{TOBN(0x5e942e79, 0xc81710a0), TOBN(0x557e4a36, 0x27ccadd4),
+           TOBN(0x72a2bc56, 0x4bcf6d0c), TOBN(0x09ee5f43, 0x26d7b80c)},
+          {TOBN(0x6b70dbe9, 0xd4292f19), TOBN(0x56f74c26, 0x63f16b18),
+           TOBN(0xc23db0f7, 0x35fbb42a), TOBN(0xb606bdf6, 0x6ae10040)}},
+         {{TOBN(0x1eb15d4d, 0x044573ac), TOBN(0x7dc3cf86, 0x556b0ba4),
+           TOBN(0x97af9a33, 0xc60df6f7), TOBN(0x0b1ef85c, 0xa716ce8c)},
+          {TOBN(0x2922f884, 0xc96958be), TOBN(0x7c32fa94, 0x35690963),
+           TOBN(0x2d7f667c, 0xeaa00061), TOBN(0xeaaf7c17, 0x3547365c)}},
+         {{TOBN(0x1eb4de46, 0x87032d58), TOBN(0xc54f3d83, 0x5e2c79e0),
+           TOBN(0x07818df4, 0x5d04ef23), TOBN(0x55faa9c8, 0x673d41b4)},
+          {TOBN(0xced64f6f, 0x89b95355), TOBN(0x4860d2ea, 0xb7415c84),
+           TOBN(0x5fdb9bd2, 0x050ebad3), TOBN(0xdb53e0cc, 0x6685a5bf)}},
+         {{TOBN(0xb830c031, 0x9feb6593), TOBN(0xdd87f310, 0x6accff17),
+           TOBN(0x2303ebab, 0x9f555c10), TOBN(0x94603695, 0x287e7065)},
+          {TOBN(0xf88311c3, 0x2e83358c), TOBN(0x508dd9b4, 0xeefb0178),
+           TOBN(0x7ca23706, 0x2dba8652), TOBN(0x62aac5a3, 0x0047abe5)}},
+         {{TOBN(0x9a61d2a0, 0x8b1ea7b3), TOBN(0xd495ab63, 0xae8b1485),
+           TOBN(0x38740f84, 0x87052f99), TOBN(0x178ebe5b, 0xb2974eea)},
+          {TOBN(0x030bbcca, 0x5b36d17f), TOBN(0xb5e4cce3, 0xaaf86eea),
+           TOBN(0xb51a0220, 0x68f8e9e0), TOBN(0xa4348796, 0x09eb3e75)}},
+         {{TOBN(0xbe592309, 0xeef1a752), TOBN(0x5d7162d7, 0x6f2aa1ed),
+           TOBN(0xaebfb5ed, 0x0f007dd2), TOBN(0x255e14b2, 0xc89edd22)},
+          {TOBN(0xba85e072, 0x0303b697), TOBN(0xc5d17e25, 0xf05720ff),
+           TOBN(0x02b58d6e, 0x5128ebb6), TOBN(0x2c80242d, 0xd754e113)}},
+         {{TOBN(0x919fca5f, 0xabfae1ca), TOBN(0x937afaac, 0x1a21459b),
+           TOBN(0x9e0ca91c, 0x1f66a4d2), TOBN(0x194cc7f3, 0x23ec1331)},
+          {TOBN(0xad25143a, 0x8aa11690), TOBN(0xbe40ad8d, 0x09b59e08),
+           TOBN(0x37d60d9b, 0xe750860a), TOBN(0x6c53b008, 0xc6bf434c)}},
+         {{TOBN(0xb572415d, 0x1356eb80), TOBN(0xb8bf9da3, 0x9578ded8),
+           TOBN(0x22658e36, 0x5e8fb38b), TOBN(0x9b70ce22, 0x5af8cb22)},
+          {TOBN(0x7c00018a, 0x829a8180), TOBN(0x84329f93, 0xb81ed295),
+           TOBN(0x7c343ea2, 0x5f3cea83), TOBN(0x38f8655f, 0x67586536)}},
+         {{TOBN(0xa661a0d0, 0x1d3ec517), TOBN(0x98744652, 0x512321ae),
+           TOBN(0x084ca591, 0xeca92598), TOBN(0xa9bb9dc9, 0x1dcb3feb)},
+          {TOBN(0x14c54355, 0x78b4c240), TOBN(0x5ed62a3b, 0x610cafdc),
+           TOBN(0x07512f37, 0x1b38846b), TOBN(0x571bb70a, 0xb0e38161)}},
+         {{TOBN(0xb556b95b, 0x2da705d2), TOBN(0x3ef8ada6, 0xb1a08f98),
+           TOBN(0x85302ca7, 0xddecfbe5), TOBN(0x0e530573, 0x943105cd)},
+          {TOBN(0x60554d55, 0x21a9255d), TOBN(0x63a32fa1, 0xf2f3802a),
+           TOBN(0x35c8c5b0, 0xcd477875), TOBN(0x97f458ea, 0x6ad42da1)}},
+         {{TOBN(0x832d7080, 0xeb6b242d), TOBN(0xd30bd023, 0x3b71e246),
+           TOBN(0x7027991b, 0xbe31139d), TOBN(0x68797e91, 0x462e4e53)},
+          {TOBN(0x423fe20a, 0x6b4e185a), TOBN(0x82f2c67e, 0x42d9b707),
+           TOBN(0x25c81768, 0x4cf7811b), TOBN(0xbd53005e, 0x045bb95d)}}},
+        {{{TOBN(0xe5f649be, 0x9d8e68fd), TOBN(0xdb0f0533, 0x1b044320),
+           TOBN(0xf6fde9b3, 0xe0c33398), TOBN(0x92f4209b, 0x66c8cfae)},
+          {TOBN(0xe9d1afcc, 0x1a739d4b), TOBN(0x09aea75f, 0xa28ab8de),
+           TOBN(0x14375fb5, 0xeac6f1d0), TOBN(0x6420b560, 0x708f7aa5)}},
+         {{TOBN(0x9eae499c, 0x6254dc41), TOBN(0x7e293924, 0x7a837e7e),
+           TOBN(0x74aec08c, 0x090524a7), TOBN(0xf82b9219, 0x8d6f55f2)},
+          {TOBN(0x493c962e, 0x1402cec5), TOBN(0x9f17ca17, 0xfa2f30e7),
+           TOBN(0xbcd783e8, 0xe9b879cb), TOBN(0xea3d8c14, 0x5a6f145f)}},
+         {{TOBN(0xdede15e7, 0x5e0dee6e), TOBN(0x74f24872, 0xdc628aa2),
+           TOBN(0xd3e9c4fe, 0x7861bb93), TOBN(0x56d4822a, 0x6187b2e0)},
+          {TOBN(0xb66417cf, 0xc59826f9), TOBN(0xca260969, 0x2408169e),
+           TOBN(0xedf69d06, 0xc79ef885), TOBN(0x00031f8a, 0xdc7d138f)}},
+         {{TOBN(0x103c46e6, 0x0ebcf726), TOBN(0x4482b831, 0x6231470e),
+           TOBN(0x6f6dfaca, 0x487c2109), TOBN(0x2e0ace97, 0x62e666ef)},
+          {TOBN(0x3246a9d3, 0x1f8d1f42), TOBN(0x1b1e83f1, 0x574944d2),
+           TOBN(0x13dfa63a, 0xa57f334b), TOBN(0x0cf8daed, 0x9f025d81)}},
+         {{TOBN(0x30d78ea8, 0x00ee11c1), TOBN(0xeb053cd4, 0xb5e3dd75),
+           TOBN(0x9b65b13e, 0xd58c43c5), TOBN(0xc3ad49bd, 0xbd151663)},
+          {TOBN(0x99fd8e41, 0xb6427990), TOBN(0x12cf15bd, 0x707eae1e),
+           TOBN(0x29ad4f1b, 0x1aabb71e), TOBN(0x5143e74d, 0x07545d0e)}},
+         {{TOBN(0x30266336, 0xc88bdee1), TOBN(0x25f29306, 0x5876767c),
+           TOBN(0x9c078571, 0xc6731996), TOBN(0xc88690b2, 0xed552951)},
+          {TOBN(0x274f2c2d, 0x852705b4), TOBN(0xb0bf8d44, 0x4e09552d),
+           TOBN(0x7628beeb, 0x986575d1), TOBN(0x407be238, 0x7f864651)}},
+         {{TOBN(0x0e5e3049, 0xa639fc6b), TOBN(0xe75c35d9, 0x86003625),
+           TOBN(0x0cf35bd8, 0x5dcc1646), TOBN(0x8bcaced2, 0x6c26273a)},
+          {TOBN(0xe22ecf1d, 0xb5536742), TOBN(0x013dd897, 0x1a9e068b),
+           TOBN(0x17f411cb, 0x8a7909c5), TOBN(0x5757ac98, 0x861dd506)}},
+         {{TOBN(0x85de1f0d, 0x1e935abb), TOBN(0xdefd10b4, 0x154de37a),
+           TOBN(0xb8d9e392, 0x369cebb5), TOBN(0x54d5ef9b, 0x761324be)},
+          {TOBN(0x4d6341ba, 0x74f17e26), TOBN(0xc0a0e3c8, 0x78c1dde4),
+           TOBN(0xa6d77581, 0x87d918fd), TOBN(0x66876015, 0x02ca3a13)}},
+         {{TOBN(0xc7313e9c, 0xf36658f0), TOBN(0xc433ef1c, 0x71f8057e),
+           TOBN(0x85326246, 0x1b6a835a), TOBN(0xc8f05398, 0x7c86394c)},
+          {TOBN(0xff398cdf, 0xe983c4a1), TOBN(0xbf5e8162, 0x03b7b931),
+           TOBN(0x93193c46, 0xb7b9045b), TOBN(0x1e4ebf5d, 0xa4a6e46b)}},
+         {{TOBN(0xf9942a60, 0x43a24fe7), TOBN(0x29c1191e, 0xffb3492b),
+           TOBN(0x9f662449, 0x902fde05), TOBN(0xc792a7ac, 0x6713c32d)},
+          {TOBN(0x2fd88ad8, 0xb737982c), TOBN(0x7e3a0319, 0xa21e60e3),
+           TOBN(0x09b0de44, 0x7383591a), TOBN(0x6df141ee, 0x8310a456)}},
+         {{TOBN(0xaec1a039, 0xe6d6f471), TOBN(0x14b2ba0f, 0x1198d12e),
+           TOBN(0xebc1a160, 0x3aeee5ac), TOBN(0x401f4836, 0xe0b964ce)},
+          {TOBN(0x2ee43796, 0x4fd03f66), TOBN(0x3fdb4e49, 0xdd8f3f12),
+           TOBN(0x6ef267f6, 0x29380f18), TOBN(0x3e8e9670, 0x8da64d16)}},
+         {{TOBN(0xbc19180c, 0x207674f1), TOBN(0x112e09a7, 0x33ae8fdb),
+           TOBN(0x99667554, 0x6aaeb71e), TOBN(0x79432af1, 0xe101b1c7)},
+          {TOBN(0xd5eb558f, 0xde2ddec6), TOBN(0x81392d1f, 0x5357753f),
+           TOBN(0xa7a76b97, 0x3ae1158a), TOBN(0x416fbbff, 0x4a899991)}},
+         {{TOBN(0x9e65fdfd, 0x0d4a9dcf), TOBN(0x7bc29e48, 0x944ddf12),
+           TOBN(0xbc1a92d9, 0x3c856866), TOBN(0x273c6905, 0x6e98dfe2)},
+          {TOBN(0x69fce418, 0xcdfaa6b8), TOBN(0x606bd823, 0x5061c69f),
+           TOBN(0x42d495a0, 0x6af75e27), TOBN(0x8ed3d505, 0x6d873a1f)}},
+         {{TOBN(0xaf552841, 0x6ab25b6a), TOBN(0xc6c0ffc7, 0x2b1a4523),
+           TOBN(0xab18827b, 0x21c99e03), TOBN(0x060e8648, 0x9034691b)},
+          {TOBN(0x5207f90f, 0x93c7f398), TOBN(0x9f4a96cb, 0x82f8d10b),
+           TOBN(0xdd71cd79, 0x3ad0f9e3), TOBN(0x84f435d2, 0xfc3a54f5)}},
+         {{TOBN(0x4b03c55b, 0x8e33787f), TOBN(0xef42f975, 0xa6384673),
+           TOBN(0xff7304f7, 0x5051b9f0), TOBN(0x18aca1dc, 0x741c87c2)},
+          {TOBN(0x56f120a7, 0x2d4bfe80), TOBN(0xfd823b3d, 0x053e732c),
+           TOBN(0x11bccfe4, 0x7537ca16), TOBN(0xdf6c9c74, 0x1b5a996b)}},
+         {{TOBN(0xee7332c7, 0x904fc3fa), TOBN(0x14a23f45, 0xc7e3636a),
+           TOBN(0xc38659c3, 0xf091d9aa), TOBN(0x4a995e5d, 0xb12d8540)},
+          {TOBN(0x20a53bec, 0xf3a5598a), TOBN(0x56534b17, 0xb1eaa995),
+           TOBN(0x9ed3dca4, 0xbf04e03c), TOBN(0x716c563a, 0xd8d56268)}},
+         {{TOBN(0x27ba77a4, 0x1d6178e7), TOBN(0xe4c80c40, 0x68a1ff8e),
+           TOBN(0x75011099, 0x0a13f63d), TOBN(0x7bf33521, 0xa61d46f3)},
+          {TOBN(0x0aff218e, 0x10b365bb), TOBN(0x81021804, 0x0fd7ea75),
+           TOBN(0x05a3fd8a, 0xa4b3a925), TOBN(0xb829e75f, 0x9b3db4e6)}},
+         {{TOBN(0x6bdc75a5, 0x4d53e5fb), TOBN(0x04a5dc02, 0xd52717e3),
+           TOBN(0x86af502f, 0xe9a42ec2), TOBN(0x8867e8fb, 0x2630e382)},
+          {TOBN(0xbf845c6e, 0xbec9889b), TOBN(0x54f491f2, 0xcb47c98d),
+           TOBN(0xa3091fba, 0x790c2a12), TOBN(0xd7f6fd78, 0xc20f708b)}},
+         {{TOBN(0xa569ac30, 0xacde5e17), TOBN(0xd0f996d0, 0x6852b4d7),
+           TOBN(0xe51d4bb5, 0x4609ae54), TOBN(0x3fa37d17, 0x0daed061)},
+          {TOBN(0x62a88684, 0x34b8fb41), TOBN(0x99a2acbd, 0x9efb64f1),
+           TOBN(0xb75c1a5e, 0x6448e1f2), TOBN(0xfa99951a, 0x42b5a069)}},
+         {{TOBN(0x6d956e89, 0x2f3b26e7), TOBN(0xf4709860, 0xda875247),
+           TOBN(0x3ad15179, 0x2482dda3), TOBN(0xd64110e3, 0x017d82f0)},
+          {TOBN(0x14928d2c, 0xfad414e4), TOBN(0x2b155f58, 0x2ed02b24),
+           TOBN(0x481a141b, 0xcb821bf1), TOBN(0x12e3c770, 0x4f81f5da)}},
+         {{TOBN(0xe49c5de5, 0x9fff8381), TOBN(0x11053232, 0x5bbec894),
+           TOBN(0xa0d051cc, 0x454d88c4), TOBN(0x4f6db89c, 0x1f8e531b)},
+          {TOBN(0x34fe3fd6, 0xca563a44), TOBN(0x7f5c2215, 0x58da8ab9),
+           TOBN(0x8445016d, 0x9474f0a1), TOBN(0x17d34d61, 0xcb7d8a0a)}},
+         {{TOBN(0x8e9d3910, 0x1c474019), TOBN(0xcaff2629, 0xd52ceefb),
+           TOBN(0xf9cf3e32, 0xc1622c2b), TOBN(0xd4b95e3c, 0xe9071a05)},
+          {TOBN(0xfbbca61f, 0x1594438c), TOBN(0x1eb6e6a6, 0x04aadedf),
+           TOBN(0x853027f4, 0x68e14940), TOBN(0x221d322a, 0xdfabda9c)}},
+         {{TOBN(0xed8ea9f6, 0xb7cb179a), TOBN(0xdc7b764d, 0xb7934dcc),
+           TOBN(0xfcb13940, 0x5e09180d), TOBN(0x6629a6bf, 0xb47dc2dd)},
+          {TOBN(0xbfc55e4e, 0x9f5a915e), TOBN(0xb1db9d37, 0x6204441e),
+           TOBN(0xf82d68cf, 0x930c5f53), TOBN(0x17d3a142, 0xcbb605b1)}},
+         {{TOBN(0xdd5944ea, 0x308780f2), TOBN(0xdc8de761, 0x3845f5e4),
+           TOBN(0x6beaba7d, 0x7624d7a3), TOBN(0x1e709afd, 0x304df11e)},
+          {TOBN(0x95364376, 0x02170456), TOBN(0xbf204b3a, 0xc8f94b64),
+           TOBN(0x4e53af7c, 0x5680ca68), TOBN(0x0526074a, 0xe0c67574)}},
+         {{TOBN(0x95d8cef8, 0xecd92af6), TOBN(0xe6b9fa7a, 0x6cd1745a),
+           TOBN(0x3d546d3d, 0xa325c3e4), TOBN(0x1f57691d, 0x9ae93aae)},
+          {TOBN(0xe891f3fe, 0x9d2e1a33), TOBN(0xd430093f, 0xac063d35),
+           TOBN(0xeda59b12, 0x5513a327), TOBN(0xdc2134f3, 0x5536f18f)}},
+         {{TOBN(0xaa51fe2c, 0x5c210286), TOBN(0x3f68aaee, 0x1cab658c),
+           TOBN(0x5a23a00b, 0xf9357292), TOBN(0x9a626f39, 0x7efdabed)},
+          {TOBN(0xfe2b3bf3, 0x199d78e3), TOBN(0xb7a2af77, 0x71bbc345),
+           TOBN(0x3d19827a, 0x1e59802c), TOBN(0x823bbc15, 0xb487a51c)}},
+         {{TOBN(0x856139f2, 0x99d0a422), TOBN(0x9ac3df65, 0xf456c6fb),
+           TOBN(0xaddf65c6, 0x701f8bd6), TOBN(0x149f321e, 0x3758df87)},
+          {TOBN(0xb1ecf714, 0x721b7eba), TOBN(0xe17df098, 0x31a3312a),
+           TOBN(0xdb2fd6ec, 0xd5c4d581), TOBN(0xfd02996f, 0x8fcea1b3)}},
+         {{TOBN(0xe29fa63e, 0x7882f14f), TOBN(0xc9f6dc35, 0x07c6cadc),
+           TOBN(0x46f22d6f, 0xb882bed0), TOBN(0x1a45755b, 0xd118e52c)},
+          {TOBN(0x9f2c7c27, 0x7c4608cf), TOBN(0x7ccbdf32, 0x568012c2),
+           TOBN(0xfcb0aedd, 0x61729b0e), TOBN(0x7ca2ca9e, 0xf7d75dbf)}},
+         {{TOBN(0xf58fecb1, 0x6f640f62), TOBN(0xe274b92b, 0x39f51946),
+           TOBN(0x7f4dfc04, 0x6288af44), TOBN(0x0a91f32a, 0xeac329e5)},
+          {TOBN(0x43ad274b, 0xd6aaba31), TOBN(0x719a1640, 0x0f6884f9),
+           TOBN(0x685d29f6, 0xdaf91e20), TOBN(0x5ec1cc33, 0x27e49d52)}},
+         {{TOBN(0x38f4de96, 0x3b54a059), TOBN(0x0e0015e5, 0xefbcfdb3),
+           TOBN(0x177d23d9, 0x4dbb8da6), TOBN(0x98724aa2, 0x97a617ad)},
+          {TOBN(0x30f0885b, 0xfdb6558e), TOBN(0xf9f7a28a, 0xc7899a96),
+           TOBN(0xd2ae8ac8, 0x872dc112), TOBN(0xfa0642ca, 0x73c3c459)}},
+         {{TOBN(0x15296981, 0xe7dfc8d6), TOBN(0x67cd4450, 0x1fb5b94a),
+           TOBN(0x0ec71cf1, 0x0eddfd37), TOBN(0xc7e5eeb3, 0x9a8eddc7)},
+          {TOBN(0x02ac8e3d, 0x81d95028), TOBN(0x0088f172, 0x70b0e35d),
+           TOBN(0xec041fab, 0xe1881fe3), TOBN(0x62cf71b8, 0xd99e7faa)}},
+         {{TOBN(0x5043dea7, 0xe0f222c2), TOBN(0x309d42ac, 0x72e65142),
+           TOBN(0x94fe9ddd, 0x9216cd30), TOBN(0xd6539c7d, 0x0f87feec)},
+          {TOBN(0x03c5a57c, 0x432ac7d7), TOBN(0x72692cf0, 0x327fda10),
+           TOBN(0xec28c85f, 0x280698de), TOBN(0x2331fb46, 0x7ec283b1)}},
+         {{TOBN(0xd34bfa32, 0x2867e633), TOBN(0x78709a82, 0x0a9cc815),
+           TOBN(0xb7fe6964, 0x875e2fa5), TOBN(0x25cc064f, 0x9e98bfb5)},
+          {TOBN(0x9eb0151c, 0x493a65c5), TOBN(0x5fb5d941, 0x53182464),
+           TOBN(0x69e6f130, 0xf04618e2), TOBN(0xa8ecec22, 0xf89c8ab6)}},
+         {{TOBN(0xcd6ac88b, 0xb96209bd), TOBN(0x65fa8cdb, 0xb3e1c9e0),
+           TOBN(0xa47d22f5, 0x4a8d8eac), TOBN(0x83895cdf, 0x8d33f963)},
+          {TOBN(0xa8adca59, 0xb56cd3d1), TOBN(0x10c8350b, 0xdaf38232),
+           TOBN(0x2b161fb3, 0xa5080a9f), TOBN(0xbe7f5c64, 0x3af65b3a)}},
+         {{TOBN(0x2c754039, 0x97403a11), TOBN(0x94626cf7, 0x121b96af),
+           TOBN(0x431de7c4, 0x6a983ec2), TOBN(0x3780dd3a, 0x52cc3df7)},
+          {TOBN(0xe28a0e46, 0x2baf8e3b), TOBN(0xabe68aad, 0x51d299ae),
+           TOBN(0x603eb8f9, 0x647a2408), TOBN(0x14c61ed6, 0x5c750981)}},
+         {{TOBN(0x88b34414, 0xc53352e7), TOBN(0x5a34889c, 0x1337d46e),
+           TOBN(0x612c1560, 0xf95f2bc8), TOBN(0x8a3f8441, 0xd4807a3a)},
+          {TOBN(0x680d9e97, 0x5224da68), TOBN(0x60cd6e88, 0xc3eb00e9),
+           TOBN(0x3875a98e, 0x9a6bc375), TOBN(0xdc80f924, 0x4fd554c2)}},
+         {{TOBN(0x6c4b3415, 0x6ac77407), TOBN(0xa1e5ea8f, 0x25420681),
+           TOBN(0x541bfa14, 0x4607a458), TOBN(0x5dbc7e7a, 0x96d7fbf9)},
+          {TOBN(0x646a851b, 0x31590a47), TOBN(0x039e85ba, 0x15ee6df8),
+           TOBN(0xd19fa231, 0xd7b43fc0), TOBN(0x84bc8be8, 0x299a0e04)}},
+         {{TOBN(0x2b9d2936, 0xf20df03a), TOBN(0x24054382, 0x8608d472),
+           TOBN(0x76b6ba04, 0x9149202a), TOBN(0xb21c3831, 0x3670e7b7)},
+          {TOBN(0xddd93059, 0xd6fdee10), TOBN(0x9da47ad3, 0x78488e71),
+           TOBN(0x99cc1dfd, 0xa0fcfb25), TOBN(0x42abde10, 0x64696954)}},
+         {{TOBN(0x14cc15fc, 0x17eab9fe), TOBN(0xd6e863e4, 0xd3e70972),
+           TOBN(0x29a7765c, 0x6432112c), TOBN(0x88660001, 0x5b0774d8)},
+          {TOBN(0x3729175a, 0x2c088eae), TOBN(0x13afbcae, 0x8230b8d4),
+           TOBN(0x44768151, 0x915f4379), TOBN(0xf086431a, 0xd8d22812)}},
+         {{TOBN(0x37461955, 0xc298b974), TOBN(0x905fb5f0, 0xf8711e04),
+           TOBN(0x787abf3a, 0xfe969d18), TOBN(0x392167c2, 0x6f6a494e)},
+          {TOBN(0xfc7a0d2d, 0x28c511da), TOBN(0xf127c7dc, 0xb66a262d),
+           TOBN(0xf9c4bb95, 0xfd63fdf0), TOBN(0x90016589, 0x3913ef46)}},
+         {{TOBN(0x74d2a73c, 0x11aa600d), TOBN(0x2f5379bd, 0x9fb5ab52),
+           TOBN(0xe49e53a4, 0x7fb70068), TOBN(0x68dd39e5, 0x404aa9a7)},
+          {TOBN(0xb9b0cf57, 0x2ecaa9c3), TOBN(0xba0e103b, 0xe824826b),
+           TOBN(0x60c2198b, 0x4631a3c4), TOBN(0xc5ff84ab, 0xfa8966a2)}},
+         {{TOBN(0x2d6ebe22, 0xac95aff8), TOBN(0x1c9bb6db, 0xb5a46d09),
+           TOBN(0x419062da, 0x53ee4f8d), TOBN(0x7b9042d0, 0xbb97efef)},
+          {TOBN(0x0f87f080, 0x830cf6bd), TOBN(0x4861d19a, 0x6ec8a6c6),
+           TOBN(0xd3a0daa1, 0x202f01aa), TOBN(0xb0111674, 0xf25afbd5)}},
+         {{TOBN(0x6d00d6cf, 0x1afb20d9), TOBN(0x13695000, 0x40671bc5),
+           TOBN(0x913ab0dc, 0x2485ea9b), TOBN(0x1f2bed06, 0x9eef61ac)},
+          {TOBN(0x850c8217, 0x6d799e20), TOBN(0x93415f37, 0x3271c2de),
+           TOBN(0x5afb06e9, 0x6c4f5910), TOBN(0x688a52df, 0xc4e9e421)}},
+         {{TOBN(0x30495ba3, 0xe2a9a6db), TOBN(0x4601303d, 0x58f9268b),
+           TOBN(0xbe3b0dad, 0x7eb0f04f), TOBN(0x4ea47250, 0x4456936d)},
+          {TOBN(0x8caf8798, 0xd33fd3e7), TOBN(0x1ccd8a89, 0xeb433708),
+           TOBN(0x9effe3e8, 0x87fd50ad), TOBN(0xbe240a56, 0x6b29c4df)}},
+         {{TOBN(0xec4ffd98, 0xca0e7ebd), TOBN(0xf586783a, 0xe748616e),
+           TOBN(0xa5b00d8f, 0xc77baa99), TOBN(0x0acada29, 0xb4f34c9c)},
+          {TOBN(0x36dad67d, 0x0fe723ac), TOBN(0x1d8e53a5, 0x39c36c1e),
+           TOBN(0xe4dd342d, 0x1f4bea41), TOBN(0x64fd5e35, 0xebc9e4e0)}},
+         {{TOBN(0x96f01f90, 0x57908805), TOBN(0xb5b9ea3d, 0x5ed480dd),
+           TOBN(0x366c5dc2, 0x3efd2dd0), TOBN(0xed2fe305, 0x6e9dfa27)},
+          {TOBN(0x4575e892, 0x6e9197e2), TOBN(0x11719c09, 0xab502a5d),
+           TOBN(0x264c7bec, 0xe81f213f), TOBN(0x741b9241, 0x55f5c457)}},
+         {{TOBN(0x78ac7b68, 0x49a5f4f4), TOBN(0xf91d70a2, 0x9fc45b7d),
+           TOBN(0x39b05544, 0xb0f5f355), TOBN(0x11f06bce, 0xeef930d9)},
+          {TOBN(0xdb84d25d, 0x038d05e1), TOBN(0x04838ee5, 0xbacc1d51),
+           TOBN(0x9da3ce86, 0x9e8ee00b), TOBN(0xc3412057, 0xc36eda1f)}},
+         {{TOBN(0xae80b913, 0x64d9c2f4), TOBN(0x7468bac3, 0xa010a8ff),
+           TOBN(0xdfd20037, 0x37359d41), TOBN(0x1a0f5ab8, 0x15efeacc)},
+          {TOBN(0x7c25ad2f, 0x659d0ce0), TOBN(0x4011bcbb, 0x6785cff1),
+           TOBN(0x128b9912, 0x7e2192c7), TOBN(0xa549d8e1, 0x13ccb0e8)}},
+         {{TOBN(0x805588d8, 0xc85438b1), TOBN(0x5680332d, 0xbc25cb27),
+           TOBN(0xdcd1bc96, 0x1a4bfdf4), TOBN(0x779ff428, 0x706f6566)},
+          {TOBN(0x8bbee998, 0xf059987a), TOBN(0xf6ce8cf2, 0xcc686de7),
+           TOBN(0xf8ad3c4a, 0x953cfdb2), TOBN(0xd1d426d9, 0x2205da36)}},
+         {{TOBN(0xb3c0f13f, 0xc781a241), TOBN(0x3e89360e, 0xd75362a8),
+           TOBN(0xccd05863, 0xc8a91184), TOBN(0x9bd0c9b7, 0xefa8a7f4)},
+          {TOBN(0x97ee4d53, 0x8a912a4b), TOBN(0xde5e15f8, 0xbcf518fd),
+           TOBN(0x6a055bf8, 0xc467e1e0), TOBN(0x10be4b4b, 0x1587e256)}},
+         {{TOBN(0xd90c14f2, 0x668621c9), TOBN(0xd5518f51, 0xab9c92c1),
+           TOBN(0x8e6a0100, 0xd6d47b3c), TOBN(0xcbe980dd, 0x66716175)},
+          {TOBN(0x500d3f10, 0xddd83683), TOBN(0x3b6cb35d, 0x99cac73c),
+           TOBN(0x53730c8b, 0x6083d550), TOBN(0xcf159767, 0xdf0a1987)}},
+         {{TOBN(0x84bfcf53, 0x43ad73b3), TOBN(0x1b528c20, 0x4f035a94),
+           TOBN(0x4294edf7, 0x33eeac69), TOBN(0xb6283e83, 0x817f3240)},
+          {TOBN(0xc3fdc959, 0x0a5f25b1), TOBN(0xefaf8aa5, 0x5844ee22),
+           TOBN(0xde269ba5, 0xdbdde4de), TOBN(0xe3347160, 0xc56133bf)}},
+         {{TOBN(0xc1184219, 0x8d9ea9f8), TOBN(0x090de5db, 0xf3fc1ab5),
+           TOBN(0x404c37b1, 0x0bf22cda), TOBN(0x7de20ec8, 0xf5618894)},
+          {TOBN(0x754c588e, 0xecdaecab), TOBN(0x6ca4b0ed, 0x88342743),
+           TOBN(0x76f08bdd, 0xf4a938ec), TOBN(0xd182de89, 0x91493ccb)}},
+         {{TOBN(0xd652c53e, 0xc8a4186a), TOBN(0xb3e878db, 0x946d8e33),
+           TOBN(0x088453c0, 0x5f37663c), TOBN(0x5cd9daaa, 0xb407748b)},
+          {TOBN(0xa1f5197f, 0x586d5e72), TOBN(0x47500be8, 0xc443ca59),
+           TOBN(0x78ef35b2, 0xe2652424), TOBN(0x09c5d26f, 0x6dd7767d)}},
+         {{TOBN(0x7175a79a, 0xa74d3f7b), TOBN(0x0428fd8d, 0xcf5ea459),
+           TOBN(0x511cb97c, 0xa5d1746d), TOBN(0x36363939, 0xe71d1278)},
+          {TOBN(0xcf2df955, 0x10350bf4), TOBN(0xb3817439, 0x60aae782),
+           TOBN(0xa748c0e4, 0x3e688809), TOBN(0x98021fbf, 0xd7a5a006)}},
+         {{TOBN(0x9076a70c, 0x0e367a98), TOBN(0xbea1bc15, 0x0f62b7c2),
+           TOBN(0x2645a68c, 0x30fe0343), TOBN(0xacaffa78, 0x699dc14f)},
+          {TOBN(0xf4469964, 0x457bf9c4), TOBN(0x0db6407b, 0x0d2ead83),
+           TOBN(0x68d56cad, 0xb2c6f3eb), TOBN(0x3b512e73, 0xf376356c)}},
+         {{TOBN(0xe43b0e1f, 0xfce10408), TOBN(0x89ddc003, 0x5a5e257d),
+           TOBN(0xb0ae0d12, 0x0362e5b3), TOBN(0x07f983c7, 0xb0519161)},
+          {TOBN(0xc2e94d15, 0x5d5231e7), TOBN(0xcff22aed, 0x0b4f9513),
+           TOBN(0xb02588dd, 0x6ad0b0b5), TOBN(0xb967d1ac, 0x11d0dcd5)}},
+         {{TOBN(0x8dac6bc6, 0xcf777b6c), TOBN(0x0062bdbd, 0x4c6d1959),
+           TOBN(0x53da71b5, 0x0ef5cc85), TOBN(0x07012c7d, 0x4006f14f)},
+          {TOBN(0x4617f962, 0xac47800d), TOBN(0x53365f2b, 0xc102ed75),
+           TOBN(0xb422efcb, 0x4ab8c9d3), TOBN(0x195cb26b, 0x34af31c9)}},
+         {{TOBN(0x3a926e29, 0x05f2c4ce), TOBN(0xbd2bdecb, 0x9856966c),
+           TOBN(0x5d16ab3a, 0x85527015), TOBN(0x9f81609e, 0x4486c231)},
+          {TOBN(0xd8b96b2c, 0xda350002), TOBN(0xbd054690, 0xfa1b7d36),
+           TOBN(0xdc90ebf5, 0xe71d79bc), TOBN(0xf241b6f9, 0x08964e4e)}},
+         {{TOBN(0x7c838643, 0x2fe3cd4c), TOBN(0xe0f33acb, 0xb4bc633c),
+           TOBN(0xb4a9ecec, 0x3d139f1f), TOBN(0x05ce69cd, 0xdc4a1f49)},
+          {TOBN(0xa19d1b16, 0xf5f98aaf), TOBN(0x45bb71d6, 0x6f23e0ef),
+           TOBN(0x33789fcd, 0x46cdfdd3), TOBN(0x9b8e2978, 0xcee040ca)}},
+         {{TOBN(0x9c69b246, 0xae0a6828), TOBN(0xba533d24, 0x7078d5aa),
+           TOBN(0x7a2e42c0, 0x7bb4fbdb), TOBN(0xcfb4879a, 0x7035385c)},
+          {TOBN(0x8c3dd30b, 0x3281705b), TOBN(0x7e361c6c, 0x404fe081),
+           TOBN(0x7b21649c, 0x3f604edf), TOBN(0x5dbf6a3f, 0xe52ffe47)}},
+         {{TOBN(0xc41b7c23, 0x4b54d9bf), TOBN(0x1374e681, 0x3511c3d9),
+           TOBN(0x1863bf16, 0xc1b2b758), TOBN(0x90e78507, 0x1e9e6a96)},
+          {TOBN(0xab4bf98d, 0x5d86f174), TOBN(0xd74e0bd3, 0x85e96fe4),
+           TOBN(0x8afde39f, 0xcac5d344), TOBN(0x90946dbc, 0xbd91b847)}},
+         {{TOBN(0xf5b42358, 0xfe1a838c), TOBN(0x05aae6c5, 0x620ac9d8),
+           TOBN(0x8e193bd8, 0xa1ce5a0b), TOBN(0x8f710571, 0x4dabfd72)},
+          {TOBN(0x8d8fdd48, 0x182caaac), TOBN(0x8c4aeefa, 0x040745cf),
+           TOBN(0x73c6c30a, 0xf3b93e6d), TOBN(0x991241f3, 0x16f42011)}},
+         {{TOBN(0xa0158eea, 0xe457a477), TOBN(0xd19857db, 0xee6ddc05),
+           TOBN(0xb3265224, 0x18c41671), TOBN(0x3ffdfc7e, 0x3c2c0d58)},
+          {TOBN(0x3a3a5254, 0x26ee7cda), TOBN(0x341b0869, 0xdf02c3a8),
+           TOBN(0xa023bf42, 0x723bbfc8), TOBN(0x3d15002a, 0x14452691)}}},
+        {{{TOBN(0x5ef7324c, 0x85edfa30), TOBN(0x25976554, 0x87d4f3da),
+           TOBN(0x352f5bc0, 0xdcb50c86), TOBN(0x8f6927b0, 0x4832a96c)},
+          {TOBN(0xd08ee1ba, 0x55f2f94c), TOBN(0x6a996f99, 0x344b45fa),
+           TOBN(0xe133cb8d, 0xa8aa455d), TOBN(0x5d0721ec, 0x758dc1f7)}},
+         {{TOBN(0x6ba7a920, 0x79e5fb67), TOBN(0xe1331feb, 0x70aa725e),
+           TOBN(0x5080ccf5, 0x7df5d837), TOBN(0xe4cae01d, 0x7ff72e21)},
+          {TOBN(0xd9243ee6, 0x0412a77d), TOBN(0x06ff7cac, 0xdf449025),
+           TOBN(0xbe75f7cd, 0x23ef5a31), TOBN(0xbc957822, 0x0ddef7a8)}},
+         {{TOBN(0x8cf7230c, 0xb0ce1c55), TOBN(0x5b534d05, 0x0bbfb607),
+           TOBN(0xee1ef113, 0x0e16363b), TOBN(0x27e0aa7a, 0xb4999e82)},
+          {TOBN(0xce1dac2d, 0x79362c41), TOBN(0x67920c90, 0x91bb6cb0),
+           TOBN(0x1e648d63, 0x2223df24), TOBN(0x0f7d9eef, 0xe32e8f28)}},
+         {{TOBN(0x6943f39a, 0xfa833834), TOBN(0x22951722, 0xa6328562),
+           TOBN(0x81d63dd5, 0x4170fc10), TOBN(0x9f5fa58f, 0xaecc2e6d)},
+          {TOBN(0xb66c8725, 0xe77d9a3b), TOBN(0x11235cea, 0x6384ebe0),
+           TOBN(0x06a8c118, 0x5845e24a), TOBN(0x0137b286, 0xebd093b1)}},
+         {{TOBN(0xc589e1ce, 0x44ace150), TOBN(0xe0f8d3d9, 0x4381e97c),
+           TOBN(0x59e99b11, 0x62c5a4b8), TOBN(0x90d262f7, 0xfd0ec9f9)},
+          {TOBN(0xfbc854c9, 0x283e13c9), TOBN(0x2d04fde7, 0xaedc7085),
+           TOBN(0x057d7765, 0x47dcbecb), TOBN(0x8dbdf591, 0x9a76fa5f)}},
+         {{TOBN(0xd0150695, 0x0de1e578), TOBN(0x2e1463e7, 0xe9f72bc6),
+           TOBN(0xffa68441, 0x1b39eca5), TOBN(0x673c8530, 0x7c037f2f)},
+          {TOBN(0xd0d6a600, 0x747f91da), TOBN(0xb08d43e1, 0xc9cb78e9),
+           TOBN(0x0fc0c644, 0x27b5cef5), TOBN(0x5c1d160a, 0xa60a2fd6)}},
+         {{TOBN(0xf98cae53, 0x28c8e13b), TOBN(0x375f10c4, 0xb2eddcd1),
+           TOBN(0xd4eb8b7f, 0x5cce06ad), TOBN(0xb4669f45, 0x80a2e1ef)},
+          {TOBN(0xd593f9d0, 0x5bbd8699), TOBN(0x5528a4c9, 0xe7976d13),
+           TOBN(0x3923e095, 0x1c7e28d3), TOBN(0xb9293790, 0x3f6bb577)}},
+         {{TOBN(0xdb567d6a, 0xc42bd6d2), TOBN(0x6df86468, 0xbb1f96ae),
+           TOBN(0x0efe5b1a, 0x4843b28e), TOBN(0x961bbb05, 0x6379b240)},
+          {TOBN(0xb6caf5f0, 0x70a6a26b), TOBN(0x70686c0d, 0x328e6e39),
+           TOBN(0x80da06cf, 0x895fc8d3), TOBN(0x804d8810, 0xb363fdc9)}},
+         {{TOBN(0xbe22877b, 0x207f1670), TOBN(0x9b0dd188, 0x4e615291),
+           TOBN(0x625ae8dc, 0x97a3c2bf), TOBN(0x08584ef7, 0x439b86e8)},
+          {TOBN(0xde7190a5, 0xdcd898ff), TOBN(0x26286c40, 0x2058ee3d),
+           TOBN(0x3db0b217, 0x5f87b1c1), TOBN(0xcc334771, 0x102a6db5)}},
+         {{TOBN(0xd99de954, 0x2f770fb1), TOBN(0x97c1c620, 0x4cd7535e),
+           TOBN(0xd3b6c448, 0x3f09cefc), TOBN(0xd725af15, 0x5a63b4f8)},
+          {TOBN(0x0c95d24f, 0xc01e20ec), TOBN(0xdfd37494, 0x9ae7121f),
+           TOBN(0x7d6ddb72, 0xec77b7ec), TOBN(0xfe079d3b, 0x0353a4ae)}},
+         {{TOBN(0x3066e70a, 0x2e6ac8d2), TOBN(0x9c6b5a43, 0x106e5c05),
+           TOBN(0x52d3c6f5, 0xede59b8c), TOBN(0x30d6a5c3, 0xfccec9ae)},
+          {TOBN(0xedec7c22, 0x4fc0a9ef), TOBN(0x190ff083, 0x95c16ced),
+           TOBN(0xbe12ec8f, 0x94de0fde), TOBN(0x0d131ab8, 0x852d3433)}},
+         {{TOBN(0x42ace07e, 0x85701291), TOBN(0x94793ed9, 0x194061a8),
+           TOBN(0x30e83ed6, 0xd7f4a485), TOBN(0x9eec7269, 0xf9eeff4d)},
+          {TOBN(0x90acba59, 0x0c9d8005), TOBN(0x5feca458, 0x1e79b9d1),
+           TOBN(0x8fbe5427, 0x1d506a1e), TOBN(0xa32b2c8e, 0x2439cfa7)}},
+         {{TOBN(0x1671c173, 0x73dd0b4e), TOBN(0x37a28214, 0x44a054c6),
+           TOBN(0x81760a1b, 0x4e8b53f1), TOBN(0xa6c04224, 0xf9f93b9e)},
+          {TOBN(0x18784b34, 0xcf671e3c), TOBN(0x81bbecd2, 0xcda9b994),
+           TOBN(0x38831979, 0xb2ab3848), TOBN(0xef54feb7, 0xf2e03c2d)}},
+         {{TOBN(0xcf197ca7, 0xfb8088fa), TOBN(0x01427247, 0x4ddc96c5),
+           TOBN(0xa2d2550a, 0x30777176), TOBN(0x53469898, 0x4d0cf71d)},
+          {TOBN(0x6ce937b8, 0x3a2aaac6), TOBN(0xe9f91dc3, 0x5af38d9b),
+           TOBN(0x2598ad83, 0xc8bf2899), TOBN(0x8e706ac9, 0xb5536c16)}},
+         {{TOBN(0x40dc7495, 0xf688dc98), TOBN(0x26490cd7, 0x124c4afc),
+           TOBN(0xe651ec84, 0x1f18775c), TOBN(0x393ea6c3, 0xb4fdaf4a)},
+          {TOBN(0x1e1f3343, 0x7f338e0d), TOBN(0x39fb832b, 0x6053e7b5),
+           TOBN(0x46e702da, 0x619e14d5), TOBN(0x859cacd1, 0xcdeef6e0)}},
+         {{TOBN(0x63b99ce7, 0x4462007d), TOBN(0xb8ab48a5, 0x4cb5f5b7),
+           TOBN(0x9ec673d2, 0xf55edde7), TOBN(0xd1567f74, 0x8cfaefda)},
+          {TOBN(0x46381b6b, 0x0887bcec), TOBN(0x694497ce, 0xe178f3c2),
+           TOBN(0x5e6525e3, 0x1e6266cb), TOBN(0x5931de26, 0x697d6413)}},
+         {{TOBN(0x87f8df7c, 0x0e58d493), TOBN(0xb1ae5ed0, 0x58b73f12),
+           TOBN(0xc368f784, 0xdea0c34d), TOBN(0x9bd0a120, 0x859a91a0)},
+          {TOBN(0xb00d88b7, 0xcc863c68), TOBN(0x3a1cc11e, 0x3d1f4d65),
+           TOBN(0xea38e0e7, 0x0aa85593), TOBN(0x37f13e98, 0x7dc4aee8)}},
+         {{TOBN(0x10d38667, 0xbc947bad), TOBN(0x738e07ce, 0x2a36ee2e),
+           TOBN(0xc93470cd, 0xc577fcac), TOBN(0xdee1b616, 0x2782470d)},
+          {TOBN(0x36a25e67, 0x2e793d12), TOBN(0xd6aa6cae, 0xe0f186da),
+           TOBN(0x474d0fd9, 0x80e07af7), TOBN(0xf7cdc47d, 0xba8a5cd4)}},
+         {{TOBN(0x28af6d9d, 0xab15247f), TOBN(0x7c789c10, 0x493a537f),
+           TOBN(0x7ac9b110, 0x23a334e7), TOBN(0x0236ac09, 0x12c9c277)},
+          {TOBN(0xa7e5bd25, 0x1d7a5144), TOBN(0x098b9c2a, 0xf13ec4ec),
+           TOBN(0x3639daca, 0xd3f0abca), TOBN(0x642da81a, 0xa23960f9)}},
+         {{TOBN(0x7d2e5c05, 0x4f7269b1), TOBN(0xfcf30777, 0xe287c385),
+           TOBN(0x10edc84f, 0xf2a46f21), TOBN(0x35441757, 0x4f43fa36)},
+          {TOBN(0xf1327899, 0xfd703431), TOBN(0xa438d7a6, 0x16dd587a),
+           TOBN(0x65c34c57, 0xe9c8352d), TOBN(0xa728edab, 0x5cc5a24e)}},
+         {{TOBN(0xaed78abc, 0x42531689), TOBN(0x0a51a0e8, 0x010963ef),
+           TOBN(0x5776fa0a, 0xd717d9b3), TOBN(0xf356c239, 0x7dd3428b)},
+          {TOBN(0x29903fff, 0x8d3a3dac), TOBN(0x409597fa, 0x3d94491f),
+           TOBN(0x4cd7a5ff, 0xbf4a56a4), TOBN(0xe5096474, 0x8adab462)}},
+         {{TOBN(0xa97b5126, 0x5c3427b0), TOBN(0x6401405c, 0xd282c9bd),
+           TOBN(0x3629f8d7, 0x222c5c45), TOBN(0xb1c02c16, 0xe8d50aed)},
+          {TOBN(0xbea2ed75, 0xd9635bc9), TOBN(0x226790c7, 0x6e24552f),
+           TOBN(0x3c33f2a3, 0x65f1d066), TOBN(0x2a43463e, 0x6dfccc2e)}},
+         {{TOBN(0x8cc3453a, 0xdb483761), TOBN(0xe7cc6085, 0x65d5672b),
+           TOBN(0x277ed6cb, 0xde3efc87), TOBN(0x19f2f368, 0x69234eaf)},
+          {TOBN(0x9aaf4317, 0x5c0b800b), TOBN(0x1f1e7c89, 0x8b6da6e2),
+           TOBN(0x6cfb4715, 0xb94ec75e), TOBN(0xd590dd5f, 0x453118c2)}},
+         {{TOBN(0x14e49da1, 0x1f17a34c), TOBN(0x5420ab39, 0x235a1456),
+           TOBN(0xb7637241, 0x2f50363b), TOBN(0x7b15d623, 0xc3fabb6e)},
+          {TOBN(0xa0ef40b1, 0xe274e49c), TOBN(0x5cf50744, 0x96b1860a),
+           TOBN(0xd6583fbf, 0x66afe5a4), TOBN(0x44240510, 0xf47e3e9a)}},
+         {{TOBN(0x99254343, 0x11b2d595), TOBN(0xf1367499, 0xeec8df57),
+           TOBN(0x3cb12c61, 0x3e73dd05), TOBN(0xd248c033, 0x7dac102a)},
+          {TOBN(0xcf154f13, 0xa77739f5), TOBN(0xbf4288cb, 0x23d2af42),
+           TOBN(0xaa64c9b6, 0x32e4a1cf), TOBN(0xee8c07a8, 0xc8a208f3)}},
+         {{TOBN(0xe10d4999, 0x6fe8393f), TOBN(0x0f809a3f, 0xe91f3a32),
+           TOBN(0x61096d1c, 0x802f63c8), TOBN(0x289e1462, 0x57750d3d)},
+          {TOBN(0xed06167e, 0x9889feea), TOBN(0xd5c9c0e2, 0xe0993909),
+           TOBN(0x46fca0d8, 0x56508ac6), TOBN(0x91826047, 0x4f1b8e83)}},
+         {{TOBN(0x4f2c877a, 0x9a4a2751), TOBN(0x71bd0072, 0xcae6fead),
+           TOBN(0x38df8dcc, 0x06aa1941), TOBN(0x5a074b4c, 0x63beeaa8)},
+          {TOBN(0xd6d65934, 0xc1cec8ed), TOBN(0xa6ecb49e, 0xaabc03bd),
+           TOBN(0xaade91c2, 0xde8a8415), TOBN(0xcfb0efdf, 0x691136e0)}},
+         {{TOBN(0x11af45ee, 0x23ab3495), TOBN(0xa132df88, 0x0b77463d),
+           TOBN(0x8923c15c, 0x815d06f4), TOBN(0xc3ceb3f5, 0x0d61a436)},
+          {TOBN(0xaf52291d, 0xe88fb1da), TOBN(0xea057974, 0x1da12179),
+           TOBN(0xb0d7218c, 0xd2fef720), TOBN(0x6c0899c9, 0x8e1d8845)}},
+         {{TOBN(0x98157504, 0x752ddad7), TOBN(0xd60bd74f, 0xa1a68a97),
+           TOBN(0x7047a3a9, 0xf658fb99), TOBN(0x1f5d86d6, 0x5f8511e4)},
+          {TOBN(0xb8a4bc42, 0x4b5a6d88), TOBN(0x69eb2c33, 0x1abefa7d),
+           TOBN(0x95bf39e8, 0x13c9c510), TOBN(0xf571960a, 0xd48aab43)}},
+         {{TOBN(0x7e8cfbcf, 0x704e23c6), TOBN(0xc71b7d22, 0x28aaa65b),
+           TOBN(0xa041b2bd, 0x245e3c83), TOBN(0x69b98834, 0xd21854ff)},
+          {TOBN(0x89d227a3, 0x963bfeec), TOBN(0x99947aaa, 0xde7da7cb),
+           TOBN(0x1d9ee9db, 0xee68a9b1), TOBN(0x0a08f003, 0x698ec368)}},
+         {{TOBN(0xe9ea4094, 0x78ef2487), TOBN(0xc8d2d415, 0x02cfec26),
+           TOBN(0xc52f9a6e, 0xb7dcf328), TOBN(0x0ed489e3, 0x85b6a937)},
+          {TOBN(0x9b94986b, 0xbef3366e), TOBN(0x0de59c70, 0xedddddb8),
+           TOBN(0xffdb748c, 0xeadddbe2), TOBN(0x9b9784bb, 0x8266ea40)}},
+         {{TOBN(0x142b5502, 0x1a93507a), TOBN(0xb4cd1187, 0x8d3c06cf),
+           TOBN(0xdf70e76a, 0x91ec3f40), TOBN(0x484e81ad, 0x4e7553c2)},
+          {TOBN(0x830f87b5, 0x272e9d6e), TOBN(0xea1c93e5, 0xc6ff514a),
+           TOBN(0x67cc2adc, 0xc4192a8e), TOBN(0xc77e27e2, 0x42f4535a)}},
+         {{TOBN(0x9cdbab36, 0xd2b713c5), TOBN(0x86274ea0, 0xcf7b0cd3),
+           TOBN(0x784680f3, 0x09af826b), TOBN(0xbfcc837a, 0x0c72dea3)},
+          {TOBN(0xa8bdfe9d, 0xd6529b73), TOBN(0x708aa228, 0x63a88002),
+           TOBN(0x6c7a9a54, 0xc91d45b9), TOBN(0xdf1a38bb, 0xfd004f56)}},
+         {{TOBN(0x2e8c9a26, 0xb8bad853), TOBN(0x2d52cea3, 0x3723eae7),
+           TOBN(0x054d6d81, 0x56ca2830), TOBN(0xa3317d14, 0x9a8dc411)},
+          {TOBN(0xa08662fe, 0xfd4ddeda), TOBN(0xed2a153a, 0xb55d792b),
+           TOBN(0x7035c16a, 0xbfc6e944), TOBN(0xb6bc5834, 0x00171cf3)}},
+         {{TOBN(0xe27152b3, 0x83d102b6), TOBN(0xfe695a47, 0x0646b848),
+           TOBN(0xa5bb09d8, 0x916e6d37), TOBN(0xb4269d64, 0x0d17015e)},
+          {TOBN(0x8d8156a1, 0x0a1d2285), TOBN(0xfeef6c51, 0x46d26d72),
+           TOBN(0x9dac57c8, 0x4c5434a7), TOBN(0x0282e5be, 0x59d39e31)}},
+         {{TOBN(0xedfff181, 0x721c486d), TOBN(0x301baf10, 0xbc58824e),
+           TOBN(0x8136a6aa, 0x00570031), TOBN(0x55aaf78c, 0x1cddde68)},
+          {TOBN(0x26829371, 0x59c63952), TOBN(0x3a3bd274, 0x8bc25baf),
+           TOBN(0xecdf8657, 0xb7e52dc3), TOBN(0x2dd8c087, 0xfd78e6c8)}},
+         {{TOBN(0x20553274, 0xf5531461), TOBN(0x8b4a1281, 0x5d95499b),
+           TOBN(0xe2c8763a, 0x1a80f9d2), TOBN(0xd1dbe32b, 0x4ddec758)},
+          {TOBN(0xaf12210d, 0x30c34169), TOBN(0xba74a953, 0x78baa533),
+           TOBN(0x3d133c6e, 0xa438f254), TOBN(0xa431531a, 0x201bef5b)}},
+         {{TOBN(0x15295e22, 0xf669d7ec), TOBN(0xca374f64, 0x357fb515),
+           TOBN(0x8a8406ff, 0xeaa3fdb3), TOBN(0x106ae448, 0xdf3f2da8)},
+          {TOBN(0x8f9b0a90, 0x33c8e9a1), TOBN(0x234645e2, 0x71ad5885),
+           TOBN(0x3d083224, 0x1c0aed14), TOBN(0xf10a7d3e, 0x7a942d46)}},
+         {{TOBN(0x7c11deee, 0x40d5c9be), TOBN(0xb2bae7ff, 0xba84ed98),
+           TOBN(0x93e97139, 0xaad58ddd), TOBN(0x3d872796, 0x3f6d1fa3)},
+          {TOBN(0x483aca81, 0x8569ff13), TOBN(0x8b89a5fb, 0x9a600f72),
+           TOBN(0x4cbc27c3, 0xc06f2b86), TOBN(0x22130713, 0x63ad9c0b)}},
+         {{TOBN(0xb5358b1e, 0x48ac2840), TOBN(0x18311294, 0xecba9477),
+           TOBN(0xda58f990, 0xa6946b43), TOBN(0x3098baf9, 0x9ab41819)},
+          {TOBN(0x66c4c158, 0x4198da52), TOBN(0xab4fc17c, 0x146bfd1b),
+           TOBN(0x2f0a4c3c, 0xbf36a908), TOBN(0x2ae9e34b, 0x58cf7838)}},
+         {{TOBN(0xf411529e, 0x3fa11b1f), TOBN(0x21e43677, 0x974af2b4),
+           TOBN(0x7c20958e, 0xc230793b), TOBN(0x710ea885, 0x16e840f3)},
+          {TOBN(0xfc0b21fc, 0xc5dc67cf), TOBN(0x08d51647, 0x88405718),
+           TOBN(0xd955c21f, 0xcfe49eb7), TOBN(0x9722a5d5, 0x56dd4a1f)}},
+         {{TOBN(0xc9ef50e2, 0xc861baa5), TOBN(0xc0c21a5d, 0x9505ac3e),
+           TOBN(0xaf6b9a33, 0x8b7c063f), TOBN(0xc6370339, 0x2f4779c1)},
+          {TOBN(0x22df99c7, 0x638167c3), TOBN(0xfe6ffe76, 0x795db30c),
+           TOBN(0x2b822d33, 0xa4854989), TOBN(0xfef031dd, 0x30563aa5)}},
+         {{TOBN(0x16b09f82, 0xd57c667f), TOBN(0xc70312ce, 0xcc0b76f1),
+           TOBN(0xbf04a9e6, 0xc9118aec), TOBN(0x82fcb419, 0x3409d133)},
+          {TOBN(0x1a8ab385, 0xab45d44d), TOBN(0xfba07222, 0x617b83a3),
+           TOBN(0xb05f50dd, 0x58e81b52), TOBN(0x1d8db553, 0x21ce5aff)}},
+         {{TOBN(0x3097b8d4, 0xe344a873), TOBN(0x7d8d116d, 0xfe36d53e),
+           TOBN(0x6db22f58, 0x7875e750), TOBN(0x2dc5e373, 0x43e144ea)},
+          {TOBN(0xc05f32e6, 0xe799eb95), TOBN(0xe9e5f4df, 0x6899e6ec),
+           TOBN(0xbdc3bd68, 0x1fab23d5), TOBN(0xb72b8ab7, 0x73af60e6)}},
+         {{TOBN(0x8db27ae0, 0x2cecc84a), TOBN(0x600016d8, 0x7bdb871c),
+           TOBN(0x42a44b13, 0xd7c46f58), TOBN(0xb8919727, 0xc3a77d39)},
+          {TOBN(0xcfc6bbbd, 0xdafd6088), TOBN(0x1a740146, 0x6bd20d39),
+           TOBN(0x8c747abd, 0x98c41072), TOBN(0x4c91e765, 0xbdf68ea1)}},
+         {{TOBN(0x7c95e5ca, 0x08819a78), TOBN(0xcf48b729, 0xc9587921),
+           TOBN(0x091c7c5f, 0xdebbcc7d), TOBN(0x6f287404, 0xf0e05149)},
+          {TOBN(0xf83b5ac2, 0x26cd44ec), TOBN(0x88ae32a6, 0xcfea250e),
+           TOBN(0x6ac5047a, 0x1d06ebc5), TOBN(0xc7e550b4, 0xd434f781)}},
+         {{TOBN(0x61ab1cf2, 0x5c727bd2), TOBN(0x2e4badb1, 0x1cf915b0),
+           TOBN(0x1b4dadec, 0xf69d3920), TOBN(0xe61b1ca6, 0xf14c1dfe)},
+          {TOBN(0x90b479cc, 0xbd6bd51f), TOBN(0x8024e401, 0x8045ec30),
+           TOBN(0xcab29ca3, 0x25ef0e62), TOBN(0x4f2e9416, 0x49e4ebc0)}},
+         {{TOBN(0x45eb40ec, 0x0ccced58), TOBN(0x25cd4b9c, 0x0da44f98),
+           TOBN(0x43e06458, 0x871812c6), TOBN(0x99f80d55, 0x16cef651)},
+          {TOBN(0x571340c9, 0xce6dc153), TOBN(0x138d5117, 0xd8665521),
+           TOBN(0xacdb45bc, 0x4e07014d), TOBN(0x2f34bb38, 0x84b60b91)}},
+         {{TOBN(0xf44a4fd2, 0x2ae8921e), TOBN(0xb039288e, 0x892ba1e2),
+           TOBN(0x9da50174, 0xb1c180b2), TOBN(0x6b70ab66, 0x1693dc87)},
+          {TOBN(0x7e9babc9, 0xe7057481), TOBN(0x4581ddef, 0x9c80dc41),
+           TOBN(0x0c890da9, 0x51294682), TOBN(0x0b5629d3, 0x3f4736e5)}},
+         {{TOBN(0x2340c79e, 0xb06f5b41), TOBN(0xa42e84ce, 0x4e243469),
+           TOBN(0xf9a20135, 0x045a71a9), TOBN(0xefbfb415, 0xd27b6fb6)},
+          {TOBN(0x25ebea23, 0x9d33cd6f), TOBN(0x9caedb88, 0xaa6c0af8),
+           TOBN(0x53dc7e9a, 0xd9ce6f96), TOBN(0x3897f9fd, 0x51e0b15a)}},
+         {{TOBN(0xf51cb1f8, 0x8e5d788e), TOBN(0x1aec7ba8, 0xe1d490ee),
+           TOBN(0x265991e0, 0xcc58cb3c), TOBN(0x9f306e8c, 0x9fc3ad31)},
+          {TOBN(0x5fed006e, 0x5040a0ac), TOBN(0xca9d5043, 0xfb476f2e),
+           TOBN(0xa19c06e8, 0xbeea7a23), TOBN(0xd2865801, 0x0edabb63)}},
+         {{TOBN(0xdb92293f, 0x6967469a), TOBN(0x2894d839, 0x8d8a8ed8),
+           TOBN(0x87c9e406, 0xbbc77122), TOBN(0x8671c6f1, 0x2ea3a26a)},
+          {TOBN(0xe42df8d6, 0xd7de9853), TOBN(0x2e3ce346, 0xb1f2bcc7),
+           TOBN(0xda601dfc, 0x899d50cf), TOBN(0xbfc913de, 0xfb1b598f)}},
+         {{TOBN(0x81c4909f, 0xe61f7908), TOBN(0x192e304f, 0x9bbc7b29),
+           TOBN(0xc3ed8738, 0xc104b338), TOBN(0xedbe9e47, 0x783f5d61)},
+          {TOBN(0x0c06e9be, 0x2db30660), TOBN(0xda3e613f, 0xc0eb7d8e),
+           TOBN(0xd8fa3e97, 0x322e096e), TOBN(0xfebd91e8, 0xd336e247)}},
+         {{TOBN(0x8f13ccc4, 0xdf655a49), TOBN(0xa9e00dfc, 0x5eb20210),
+           TOBN(0x84631d0f, 0xc656b6ea), TOBN(0x93a058cd, 0xd8c0d947)},
+          {TOBN(0x6846904a, 0x67bd3448), TOBN(0x4a3d4e1a, 0xf394fd5c),
+           TOBN(0xc102c1a5, 0xdb225f52), TOBN(0xe3455bba, 0xfc4f5e9a)}},
+         {{TOBN(0x6b36985b, 0x4b9ad1ce), TOBN(0xa9818536, 0x5bb7f793),
+           TOBN(0x6c25e1d0, 0x48b1a416), TOBN(0x1381dd53, 0x3c81bee7)},
+          {TOBN(0xd2a30d61, 0x7a4a7620), TOBN(0xc8412926, 0x39b8944c),
+           TOBN(0x3c1c6fbe, 0x7a97c33a), TOBN(0x941e541d, 0x938664e7)}},
+         {{TOBN(0x417499e8, 0x4a34f239), TOBN(0x15fdb83c, 0xb90402d5),
+           TOBN(0xb75f46bf, 0x433aa832), TOBN(0xb61e15af, 0x63215db1)},
+          {TOBN(0xaabe59d4, 0xa127f89a), TOBN(0x5d541e0c, 0x07e816da),
+           TOBN(0xaaba0659, 0xa618b692), TOBN(0x55327733, 0x17266026)}},
+         {{TOBN(0xaf53a0fc, 0x95f57552), TOBN(0x32947650, 0x6cacb0c9),
+           TOBN(0x253ff58d, 0xc821be01), TOBN(0xb0309531, 0xa06f1146)},
+          {TOBN(0x59bbbdf5, 0x05c2e54d), TOBN(0x158f27ad, 0x26e8dd22),
+           TOBN(0xcc5b7ffb, 0x397e1e53), TOBN(0xae03f65b, 0x7fc1e50d)}},
+         {{TOBN(0xa9784ebd, 0x9c95f0f9), TOBN(0x5ed9deb2, 0x24640771),
+           TOBN(0x31244af7, 0x035561c4), TOBN(0x87332f3a, 0x7ee857de)},
+          {TOBN(0x09e16e9e, 0x2b9e0d88), TOBN(0x52d910f4, 0x56a06049),
+           TOBN(0x507ed477, 0xa9592f48), TOBN(0x85cb917b, 0x2365d678)}},
+         {{TOBN(0xf8511c93, 0x4c8998d1), TOBN(0x2186a3f1, 0x730ea58f),
+           TOBN(0x50189626, 0xb2029db0), TOBN(0x9137a6d9, 0x02ceb75a)},
+          {TOBN(0x2fe17f37, 0x748bc82c), TOBN(0x87c2e931, 0x80469f8c),
+           TOBN(0x850f71cd, 0xbf891aa2), TOBN(0x0ca1b89b, 0x75ec3d8d)}},
+         {{TOBN(0x516c43aa, 0x5e1cd3cd), TOBN(0x89397808, 0x9a887c28),
+           TOBN(0x0059c699, 0xddea1f9f), TOBN(0x7737d6fa, 0x8e6868f7)},
+          {TOBN(0x6d93746a, 0x60f1524b), TOBN(0x36985e55, 0xba052aa7),
+           TOBN(0x41b1d322, 0xed923ea5), TOBN(0x3429759f, 0x25852a11)}},
+         {{TOBN(0xbeca6ec3, 0x092e9f41), TOBN(0x3a238c66, 0x62256bbd),
+           TOBN(0xd82958ea, 0x70ad487d), TOBN(0x4ac8aaf9, 0x65610d93)},
+          {TOBN(0x3fa101b1, 0x5e4ccab0), TOBN(0x9bf430f2, 0x9de14bfb),
+           TOBN(0xa10f5cc6, 0x6531899d), TOBN(0x590005fb, 0xea8ce17d)}},
+         {{TOBN(0xc437912f, 0x24544cb6), TOBN(0x9987b71a, 0xd79ac2e3),
+           TOBN(0x13e3d9dd, 0xc058a212), TOBN(0x00075aac, 0xd2de9606)},
+          {TOBN(0x80ab508b, 0x6cac8369), TOBN(0x87842be7, 0xf54f6c89),
+           TOBN(0xa7ad663d, 0x6bc532a4), TOBN(0x67813de7, 0x78a91bc8)}},
+         {{TOBN(0x5dcb61ce, 0xc3427239), TOBN(0x5f3c7cf0, 0xc56934d9),
+           TOBN(0xc079e0fb, 0xe3191591), TOBN(0xe40896bd, 0xb01aada7)},
+          {TOBN(0x8d466791, 0x0492d25f), TOBN(0x8aeb30c9, 0xe7408276),
+           TOBN(0xe9437495, 0x9287aacc), TOBN(0x23d4708d, 0x79fe03d4)}},
+         {{TOBN(0x8cda9cf2, 0xd0c05199), TOBN(0x502fbc22, 0xfae78454),
+           TOBN(0xc0bda9df, 0xf572a182), TOBN(0x5f9b71b8, 0x6158b372)},
+          {TOBN(0xe0f33a59, 0x2b82dd07), TOBN(0x76302735, 0x9523032e),
+           TOBN(0x7fe1a721, 0xc4505a32), TOBN(0x7b6e3e82, 0xf796409f)}}},
+        {{{TOBN(0xe3417bc0, 0x35d0b34a), TOBN(0x440b386b, 0x8327c0a7),
+           TOBN(0x8fb7262d, 0xac0362d1), TOBN(0x2c41114c, 0xe0cdf943)},
+          {TOBN(0x2ba5cef1, 0xad95a0b1), TOBN(0xc09b37a8, 0x67d54362),
+           TOBN(0x26d6cdd2, 0x01e486c9), TOBN(0x20477abf, 0x42ff9297)}},
+         {{TOBN(0xa004dcb3, 0x292a9287), TOBN(0xddc15cf6, 0x77b092c7),
+           TOBN(0x083a8464, 0x806c0605), TOBN(0x4a68df70, 0x3db997b0)},
+          {TOBN(0x9c134e45, 0x05bf7dd0), TOBN(0xa4e63d39, 0x8ccf7f8c),
+           TOBN(0xa6e6517f, 0x41b5f8af), TOBN(0xaa8b9342, 0xad7bc1cc)}},
+         {{TOBN(0x126f35b5, 0x1e706ad9), TOBN(0xb99cebb4, 0xc3a9ebdf),
+           TOBN(0xa75389af, 0xbf608d90), TOBN(0x76113c4f, 0xc6c89858)},
+          {TOBN(0x80de8eb0, 0x97e2b5aa), TOBN(0x7e1022cc, 0x63b91304),
+           TOBN(0x3bdab605, 0x6ccc066c), TOBN(0x33cbb144, 0xb2edf900)}},
+         {{TOBN(0xc4176471, 0x7af715d2), TOBN(0xe2f7f594, 0xd0134a96),
+           TOBN(0x2c1873ef, 0xa41ec956), TOBN(0xe4e7b4f6, 0x77821304)},
+          {TOBN(0xe5c8ff97, 0x88d5374a), TOBN(0x2b915e63, 0x80823d5b),
+           TOBN(0xea6bc755, 0xb2ee8fe2), TOBN(0x6657624c, 0xe7112651)}},
+         {{TOBN(0x157af101, 0xdace5aca), TOBN(0xc4fdbcf2, 0x11a6a267),
+           TOBN(0xdaddf340, 0xc49c8609), TOBN(0x97e49f52, 0xe9604a65)},
+          {TOBN(0x9be8e790, 0x937e2ad5), TOBN(0x846e2508, 0x326e17f1),
+           TOBN(0x3f38007a, 0x0bbbc0dc), TOBN(0xcf03603f, 0xb11e16d6)}},
+         {{TOBN(0xd6f800e0, 0x7442f1d5), TOBN(0x475607d1, 0x66e0e3ab),
+           TOBN(0x82807f16, 0xb7c64047), TOBN(0x8858e1e3, 0xa749883d)},
+          {TOBN(0x5859120b, 0x8231ee10), TOBN(0x1b80e7eb, 0x638a1ece),
+           TOBN(0xcb72525a, 0xc6aa73a4), TOBN(0xa7cdea3d, 0x844423ac)}},
+         {{TOBN(0x5ed0c007, 0xf8ae7c38), TOBN(0x6db07a5c, 0x3d740192),
+           TOBN(0xbe5e9c2a, 0x5fe36db3), TOBN(0xd5b9d57a, 0x76e95046)},
+          {TOBN(0x54ac32e7, 0x8eba20f2), TOBN(0xef11ca8f, 0x71b9a352),
+           TOBN(0x305e373e, 0xff98a658), TOBN(0xffe5a100, 0x823eb667)}},
+         {{TOBN(0x57477b11, 0xe51732d2), TOBN(0xdfd6eb28, 0x2538fc0e),
+           TOBN(0x5c43b0cc, 0x3b39eec5), TOBN(0x6af12778, 0xcb36cc57)},
+          {TOBN(0x70b0852d, 0x06c425ae), TOBN(0x6df92f8c, 0x5c221b9b),
+           TOBN(0x6c8d4f9e, 0xce826d9c), TOBN(0xf59aba7b, 0xb49359c3)}},
+         {{TOBN(0x5c8ed8d5, 0xda64309d), TOBN(0x61a6de56, 0x91b30704),
+           TOBN(0xd6b52f6a, 0x2f9b5808), TOBN(0x0eee4194, 0x98c958a7)},
+          {TOBN(0xcddd9aab, 0x771e4caa), TOBN(0x83965dfd, 0x78bc21be),
+           TOBN(0x02affce3, 0xb3b504f5), TOBN(0x30847a21, 0x561c8291)}},
+         {{TOBN(0xd2eb2cf1, 0x52bfda05), TOBN(0xe0e4c4e9, 0x6197b98c),
+           TOBN(0x1d35076c, 0xf8a1726f), TOBN(0x6c06085b, 0x2db11e3d)},
+          {TOBN(0x15c0c4d7, 0x4463ba14), TOBN(0x9d292f83, 0x0030238c),
+           TOBN(0x1311ee8b, 0x3727536d), TOBN(0xfeea86ef, 0xbeaedc1e)}},
+         {{TOBN(0xb9d18cd3, 0x66131e2e), TOBN(0xf31d974f, 0x80fe2682),
+           TOBN(0xb6e49e0f, 0xe4160289), TOBN(0x7c48ec0b, 0x08e92799)},
+          {TOBN(0x818111d8, 0xd1989aa7), TOBN(0xb34fa0aa, 0xebf926f9),
+           TOBN(0xdb5fe2f5, 0xa245474a), TOBN(0xf80a6ebb, 0x3c7ca756)}},
+         {{TOBN(0xa7f96054, 0xafa05dd8), TOBN(0x26dfcf21, 0xfcaf119e),
+           TOBN(0xe20ef2e3, 0x0564bb59), TOBN(0xef4dca50, 0x61cb02b8)},
+          {TOBN(0xcda7838a, 0x65d30672), TOBN(0x8b08d534, 0xfd657e86),
+           TOBN(0x4c5b4395, 0x46d595c8), TOBN(0x39b58725, 0x425cb836)}},
+         {{TOBN(0x8ea61059, 0x3de9abe3), TOBN(0x40434881, 0x9cdc03be),
+           TOBN(0x9b261245, 0xcfedce8c), TOBN(0x78c318b4, 0xcf5234a1)},
+          {TOBN(0x510bcf16, 0xfde24c99), TOBN(0x2a77cb75, 0xa2c2ff5d),
+           TOBN(0x9c895c2b, 0x27960fb4), TOBN(0xd30ce975, 0xb0eda42b)}},
+         {{TOBN(0xfda85393, 0x1a62cc26), TOBN(0x23c69b96, 0x50c0e052),
+           TOBN(0xa227df15, 0xbfc633f3), TOBN(0x2ac78848, 0x1bae7d48)},
+          {TOBN(0x487878f9, 0x187d073d), TOBN(0x6c2be919, 0x967f807d),
+           TOBN(0x765861d8, 0x336e6d8f), TOBN(0x88b8974c, 0xce528a43)}},
+         {{TOBN(0x09521177, 0xff57d051), TOBN(0x2ff38037, 0xfb6a1961),
+           TOBN(0xfc0aba74, 0xa3d76ad4), TOBN(0x7c764803, 0x25a7ec17)},
+          {TOBN(0x7532d75f, 0x48879bc8), TOBN(0xea7eacc0, 0x58ce6bc1),
+           TOBN(0xc82176b4, 0x8e896c16), TOBN(0x9a30e0b2, 0x2c750fed)}},
+         {{TOBN(0xc37e2c2e, 0x421d3aa4), TOBN(0xf926407c, 0xe84fa840),
+           TOBN(0x18abc03d, 0x1454e41c), TOBN(0x26605ecd, 0x3f7af644)},
+          {TOBN(0x242341a6, 0xd6a5eabf), TOBN(0x1edb84f4, 0x216b668e),
+           TOBN(0xd836edb8, 0x04010102), TOBN(0x5b337ce7, 0x945e1d8c)}},
+         {{TOBN(0xd2075c77, 0xc055dc14), TOBN(0x2a0ffa25, 0x81d89cdf),
+           TOBN(0x8ce815ea, 0x6ffdcbaf), TOBN(0xa3428878, 0xfb648867)},
+          {TOBN(0x277699cf, 0x884655fb), TOBN(0xfa5b5bd6, 0x364d3e41),
+           TOBN(0x01f680c6, 0x441e1cb7), TOBN(0x3fd61e66, 0xb70a7d67)}},
+         {{TOBN(0x666ba2dc, 0xcc78cf66), TOBN(0xb3018174, 0x6fdbff77),
+           TOBN(0x8d4dd0db, 0x168d4668), TOBN(0x259455d0, 0x1dab3a2a)},
+          {TOBN(0xf58564c5, 0xcde3acec), TOBN(0x77141925, 0x13adb276),
+           TOBN(0x527d725d, 0x8a303f65), TOBN(0x55deb6c9, 0xe6f38f7b)}},
+         {{TOBN(0xfd5bb657, 0xb1fa70fb), TOBN(0xfa07f50f, 0xd8073a00),
+           TOBN(0xf72e3aa7, 0xbca02500), TOBN(0xf68f895d, 0x9975740d)},
+          {TOBN(0x30112060, 0x5cae2a6a), TOBN(0x01bd7218, 0x02874842),
+           TOBN(0x3d423891, 0x7ce47bd3), TOBN(0xa66663c1, 0x789544f6)}},
+         {{TOBN(0x864d05d7, 0x3272d838), TOBN(0xe22924f9, 0xfa6295c5),
+           TOBN(0x8189593f, 0x6c2fda32), TOBN(0x330d7189, 0xb184b544)},
+          {TOBN(0x79efa62c, 0xbde1f714), TOBN(0x35771c94, 0xe5cb1a63),
+           TOBN(0x2f4826b8, 0x641c8332), TOBN(0x00a894fb, 0xc8cee854)}},
+         {{TOBN(0xb4b9a39b, 0x36194d40), TOBN(0xe857a7c5, 0x77612601),
+           TOBN(0xf4209dd2, 0x4ecf2f58), TOBN(0x82b9e66d, 0x5a033487)},
+          {TOBN(0xc1e36934, 0xe4e8b9dd), TOBN(0xd2372c9d, 0xa42377d7),
+           TOBN(0x51dc94c7, 0x0e3ae43b), TOBN(0x4c57761e, 0x04474f6f)}},
+         {{TOBN(0xdcdacd0a, 0x1058a318), TOBN(0x369cf3f5, 0x78053a9a),
+           TOBN(0xc6c3de50, 0x31c68de2), TOBN(0x4653a576, 0x3c4b6d9f)},
+          {TOBN(0x1688dd5a, 0xaa4e5c97), TOBN(0x5be80aa1, 0xb7ab3c74),
+           TOBN(0x70cefe7c, 0xbc65c283), TOBN(0x57f95f13, 0x06867091)}},
+         {{TOBN(0xa39114e2, 0x4415503b), TOBN(0xc08ff7c6, 0x4cbb17e9),
+           TOBN(0x1eff674d, 0xd7dec966), TOBN(0x6d4690af, 0x53376f63)},
+          {TOBN(0xff6fe32e, 0xea74237b), TOBN(0xc436d17e, 0xcd57508e),
+           TOBN(0x15aa28e1, 0xedcc40fe), TOBN(0x0d769c04, 0x581bbb44)}},
+         {{TOBN(0xc240b6de, 0x34eaacda), TOBN(0xd9e116e8, 0x2ba0f1de),
+           TOBN(0xcbe45ec7, 0x79438e55), TOBN(0x91787c9d, 0x96f752d7)},
+          {TOBN(0x897f532b, 0xf129ac2f), TOBN(0xd307b7c8, 0x5a36e22c),
+           TOBN(0x91940675, 0x749fb8f3), TOBN(0xd14f95d0, 0x157fdb28)}},
+         {{TOBN(0xfe51d029, 0x6ae55043), TOBN(0x8931e98f, 0x44a87de1),
+           TOBN(0xe57f1cc6, 0x09e4fee2), TOBN(0x0d063b67, 0x4e072d92)},
+          {TOBN(0x70a998b9, 0xed0e4316), TOBN(0xe74a736b, 0x306aca46),
+           TOBN(0xecf0fbf2, 0x4fda97c7), TOBN(0xa40f65cb, 0x3e178d93)}},
+         {{TOBN(0x16253604, 0x16df4285), TOBN(0xb0c9babb, 0xd0c56ae2),
+           TOBN(0x73032b19, 0xcfc5cfc3), TOBN(0xe497e5c3, 0x09752056)},
+          {TOBN(0x12096bb4, 0x164bda96), TOBN(0x1ee42419, 0xa0b74da1),
+           TOBN(0x8fc36243, 0x403826ba), TOBN(0x0c8f0069, 0xdc09e660)}},
+         {{TOBN(0x8667e981, 0xc27253c9), TOBN(0x05a6aefb, 0x92b36a45),
+           TOBN(0xa62c4b36, 0x9cb7bb46), TOBN(0x8394f375, 0x11f7027b)},
+          {TOBN(0x747bc79c, 0x5f109d0f), TOBN(0xcad88a76, 0x5b8cc60a),
+           TOBN(0x80c5a66b, 0x58f09e68), TOBN(0xe753d451, 0xf6127eac)}},
+         {{TOBN(0xc44b74a1, 0x5b0ec6f5), TOBN(0x47989fe4, 0x5289b2b8),
+           TOBN(0x745f8484, 0x58d6fc73), TOBN(0xec362a6f, 0xf61c70ab)},
+          {TOBN(0x070c98a7, 0xb3a8ad41), TOBN(0x73a20fc0, 0x7b63db51),
+           TOBN(0xed2c2173, 0xf44c35f4), TOBN(0x8a56149d, 0x9acc9dca)}},
+         {{TOBN(0x98f17881, 0x9ac6e0f4), TOBN(0x360fdeaf, 0xa413b5ed),
+           TOBN(0x0625b8f4, 0xa300b0fd), TOBN(0xf1f4d76a, 0x5b3222d3)},
+          {TOBN(0x9d6f5109, 0x587f76b8), TOBN(0x8b4ee08d, 0x2317fdb5),
+           TOBN(0x88089bb7, 0x8c68b095), TOBN(0x95570e9a, 0x5808d9b9)}},
+         {{TOBN(0xa395c36f, 0x35d33ae7), TOBN(0x200ea123, 0x50bb5a94),
+           TOBN(0x20c789bd, 0x0bafe84b), TOBN(0x243ef52d, 0x0919276a)},
+          {TOBN(0x3934c577, 0xe23ae233), TOBN(0xb93807af, 0xa460d1ec),
+           TOBN(0xb72a53b1, 0xf8fa76a4), TOBN(0xd8914cb0, 0xc3ca4491)}},
+         {{TOBN(0x2e128494, 0x3fb42622), TOBN(0x3b2700ac, 0x500907d5),
+           TOBN(0xf370fb09, 0x1a95ec63), TOBN(0xf8f30be2, 0x31b6dfbd)},
+          {TOBN(0xf2b2f8d2, 0x69e55f15), TOBN(0x1fead851, 0xcc1323e9),
+           TOBN(0xfa366010, 0xd9e5eef6), TOBN(0x64d487b0, 0xe316107e)}},
+         {{TOBN(0x4c076b86, 0xd23ddc82), TOBN(0x03fd344c, 0x7e0143f0),
+           TOBN(0xa95362ff, 0x317af2c5), TOBN(0x0add3db7, 0xe18b7a4f)},
+          {TOBN(0x9c673e3f, 0x8260e01b), TOBN(0xfbeb49e5, 0x54a1cc91),
+           TOBN(0x91351bf2, 0x92f2e433), TOBN(0xc755e7ec, 0x851141eb)}},
+         {{TOBN(0xc9a95139, 0x29607745), TOBN(0x0ca07420, 0xa26f2b28),
+           TOBN(0xcb2790e7, 0x4bc6f9dd), TOBN(0x345bbb58, 0xadcaffc0)},
+          {TOBN(0xc65ea38c, 0xbe0f27a2), TOBN(0x67c24d7c, 0x641fcb56),
+           TOBN(0x2c25f0a7, 0xa9e2c757), TOBN(0x93f5cdb0, 0x16f16c49)}},
+         {{TOBN(0x2ca5a9d7, 0xc5ee30a1), TOBN(0xd1593635, 0xb909b729),
+           TOBN(0x804ce9f3, 0xdadeff48), TOBN(0xec464751, 0xb07c30c3)},
+          {TOBN(0x89d65ff3, 0x9e49af6a), TOBN(0xf2d6238a, 0x6f3d01bc),
+           TOBN(0x1095561e, 0x0bced843), TOBN(0x51789e12, 0xc8a13fd8)}},
+         {{TOBN(0xd633f929, 0x763231df), TOBN(0x46df9f7d, 0xe7cbddef),
+           TOBN(0x01c889c0, 0xcb265da8), TOBN(0xfce1ad10, 0xaf4336d2)},
+          {TOBN(0x8d110df6, 0xfc6a0a7e), TOBN(0xdd431b98, 0x6da425dc),
+           TOBN(0xcdc4aeab, 0x1834aabe), TOBN(0x84deb124, 0x8439b7fc)}},
+         {{TOBN(0x8796f169, 0x3c2a5998), TOBN(0x9b9247b4, 0x7947190d),
+           TOBN(0x55b9d9a5, 0x11597014), TOBN(0x7e9dd70d, 0x7b1566ee)},
+          {TOBN(0x94ad78f7, 0xcbcd5e64), TOBN(0x0359ac17, 0x9bd4c032),
+           TOBN(0x3b11baaf, 0x7cc222ae), TOBN(0xa6a6e284, 0xba78e812)}},
+         {{TOBN(0x8392053f, 0x24cea1a0), TOBN(0xc97bce4a, 0x33621491),
+           TOBN(0x7eb1db34, 0x35399ee9), TOBN(0x473f78ef, 0xece81ad1)},
+          {TOBN(0x41d72fe0, 0xf63d3d0d), TOBN(0xe620b880, 0xafab62fc),
+           TOBN(0x92096bc9, 0x93158383), TOBN(0x41a21357, 0x8f896f6c)}},
+         {{TOBN(0x1b5ee2fa, 0xc7dcfcab), TOBN(0x650acfde, 0x9546e007),
+           TOBN(0xc081b749, 0xb1b02e07), TOBN(0xda9e41a0, 0xf9eca03d)},
+          {TOBN(0x013ba727, 0x175a54ab), TOBN(0xca0cd190, 0xea5d8d10),
+           TOBN(0x85ea52c0, 0x95fd96a9), TOBN(0x2c591b9f, 0xbc5c3940)}},
+         {{TOBN(0x6fb4d4e4, 0x2bad4d5f), TOBN(0xfa4c3590, 0xfef0059b),
+           TOBN(0x6a10218a, 0xf5122294), TOBN(0x9a78a81a, 0xa85751d1)},
+          {TOBN(0x04f20579, 0xa98e84e7), TOBN(0xfe1242c0, 0x4997e5b5),
+           TOBN(0xe77a273b, 0xca21e1e4), TOBN(0xfcc8b1ef, 0x9411939d)}},
+         {{TOBN(0xe20ea302, 0x92d0487a), TOBN(0x1442dbec, 0x294b91fe),
+           TOBN(0x1f7a4afe, 0xbb6b0e8f), TOBN(0x1700ef74, 0x6889c318)},
+          {TOBN(0xf5bbffc3, 0x70f1fc62), TOBN(0x3b31d4b6, 0x69c79cca),
+           TOBN(0xe8bc2aab, 0xa7f6340d), TOBN(0xb0b08ab4, 0xa725e10a)}},
+         {{TOBN(0x44f05701, 0xae340050), TOBN(0xba4b3016, 0x1cf0c569),
+           TOBN(0x5aa29f83, 0xfbe19a51), TOBN(0x1b9ed428, 0xb71d752e)},
+          {TOBN(0x1666e54e, 0xeb4819f5), TOBN(0x616cdfed, 0x9e18b75b),
+           TOBN(0x112ed5be, 0x3ee27b0b), TOBN(0xfbf28319, 0x44c7de4d)}},
+         {{TOBN(0xd685ec85, 0xe0e60d84), TOBN(0x68037e30, 0x1db7ee78),
+           TOBN(0x5b65bdcd, 0x003c4d6e), TOBN(0x33e7363a, 0x93e29a6a)},
+          {TOBN(0x995b3a61, 0x08d0756c), TOBN(0xd727f85c, 0x2faf134b),
+           TOBN(0xfac6edf7, 0x1d337823), TOBN(0x99b9aa50, 0x0439b8b4)}},
+         {{TOBN(0x722eb104, 0xe2b4e075), TOBN(0x49987295, 0x437c4926),
+           TOBN(0xb1e4c0e4, 0x46a9b82d), TOBN(0xd0cb3197, 0x57a006f5)},
+          {TOBN(0xf3de0f7d, 0xd7808c56), TOBN(0xb5c54d8f, 0x51f89772),
+           TOBN(0x500a114a, 0xadbd31aa), TOBN(0x9afaaaa6, 0x295f6cab)}},
+         {{TOBN(0x94705e21, 0x04cf667a), TOBN(0xfc2a811b, 0x9d3935d7),
+           TOBN(0x560b0280, 0x6d09267c), TOBN(0xf19ed119, 0xf780e53b)},
+          {TOBN(0xf0227c09, 0x067b6269), TOBN(0x967b8533, 0x5caef599),
+           TOBN(0x155b9243, 0x68efeebc), TOBN(0xcd6d34f5, 0xc497bae6)}},
+         {{TOBN(0x1dd8d5d3, 0x6cceb370), TOBN(0x2aeac579, 0xa78d7bf9),
+           TOBN(0x5d65017d, 0x70b67a62), TOBN(0x70c8e44f, 0x17c53f67)},
+          {TOBN(0xd1fc0950, 0x86a34d09), TOBN(0xe0fca256, 0xe7134907),
+           TOBN(0xe24fa29c, 0x80fdd315), TOBN(0x2c4acd03, 0xd87499ad)}},
+         {{TOBN(0xbaaf7517, 0x3b5a9ba6), TOBN(0xb9cbe1f6, 0x12e51a51),
+           TOBN(0xd88edae3, 0x5e154897), TOBN(0xe4309c3c, 0x77b66ca0)},
+          {TOBN(0xf5555805, 0xf67f3746), TOBN(0x85fc37ba, 0xa36401ff),
+           TOBN(0xdf86e2ca, 0xd9499a53), TOBN(0x6270b2a3, 0xecbc955b)}},
+         {{TOBN(0xafae64f5, 0x974ad33b), TOBN(0x04d85977, 0xfe7b2df1),
+           TOBN(0x2a3db3ff, 0x4ab03f73), TOBN(0x0b87878a, 0x8702740a)},
+          {TOBN(0x6d263f01, 0x5a061732), TOBN(0xc25430ce, 0xa32a1901),
+           TOBN(0xf7ebab3d, 0xdb155018), TOBN(0x3a86f693, 0x63a9b78e)}},
+         {{TOBN(0x349ae368, 0xda9f3804), TOBN(0x470f07fe, 0xa164349c),
+           TOBN(0xd52f4cc9, 0x8562baa5), TOBN(0xc74a9e86, 0x2b290df3)},
+          {TOBN(0xd3a1aa35, 0x43471a24), TOBN(0x239446be, 0xb8194511),
+           TOBN(0xbec2dd00, 0x81dcd44d), TOBN(0xca3d7f0f, 0xc42ac82d)}},
+         {{TOBN(0x1f3db085, 0xfdaf4520), TOBN(0xbb6d3e80, 0x4549daf2),
+           TOBN(0xf5969d8a, 0x19ad5c42), TOBN(0x7052b13d, 0xdbfd1511)},
+          {TOBN(0x11890d1b, 0x682b9060), TOBN(0xa71d3883, 0xac34452c),
+           TOBN(0xa438055b, 0x783805b4), TOBN(0x43241277, 0x4725b23e)}},
+         {{TOBN(0xf20cf96e, 0x4901bbed), TOBN(0x6419c710, 0xf432a2bb),
+           TOBN(0x57a0fbb9, 0xdfa9cd7d), TOBN(0x589111e4, 0x00daa249)},
+          {TOBN(0x19809a33, 0x7b60554e), TOBN(0xea5f8887, 0xede283a4),
+           TOBN(0x2d713802, 0x503bfd35), TOBN(0x151bb0af, 0x585d2a53)}},
+         {{TOBN(0x40b08f74, 0x43b30ca8), TOBN(0xe10b5bba, 0xd9934583),
+           TOBN(0xe8a546d6, 0xb51110ad), TOBN(0x1dd50e66, 0x28e0b6c5)},
+          {TOBN(0x292e9d54, 0xcff2b821), TOBN(0x3882555d, 0x47281760),
+           TOBN(0x134838f8, 0x3724d6e3), TOBN(0xf2c679e0, 0x22ddcda1)}},
+         {{TOBN(0x40ee8815, 0x6d2a5768), TOBN(0x7f227bd2, 0x1c1e7e2d),
+           TOBN(0x487ba134, 0xd04ff443), TOBN(0x76e2ff3d, 0xc614e54b)},
+          {TOBN(0x36b88d6f, 0xa3177ec7), TOBN(0xbf731d51, 0x2328fff5),
+           TOBN(0x758caea2, 0x49ba158e), TOBN(0x5ab8ff4c, 0x02938188)}},
+         {{TOBN(0x33e16056, 0x35edc56d), TOBN(0x5a69d349, 0x7e940d79),
+           TOBN(0x6c4fd001, 0x03866dcb), TOBN(0x20a38f57, 0x4893cdef)},
+          {TOBN(0xfbf3e790, 0xfac3a15b), TOBN(0x6ed7ea2e, 0x7a4f8e6b),
+           TOBN(0xa663eb4f, 0xbc3aca86), TOBN(0x22061ea5, 0x080d53f7)}},
+         {{TOBN(0x2480dfe6, 0xf546783f), TOBN(0xd38bc6da, 0x5a0a641e),
+           TOBN(0xfb093cd1, 0x2ede8965), TOBN(0x89654db4, 0xacb455cf)},
+          {TOBN(0x413cbf9a, 0x26e1adee), TOBN(0x291f3764, 0x373294d4),
+           TOBN(0x00797257, 0x648083fe), TOBN(0x25f504d3, 0x208cc341)}},
+         {{TOBN(0x635a8e5e, 0xc3a0ee43), TOBN(0x70aaebca, 0x679898ff),
+           TOBN(0x9ee9f547, 0x5dc63d56), TOBN(0xce987966, 0xffb34d00)},
+          {TOBN(0xf9f86b19, 0x5e26310a), TOBN(0x9e435484, 0x382a8ca8),
+           TOBN(0x253bcb81, 0xc2352fe4), TOBN(0xa4eac8b0, 0x4474b571)}},
+         {{TOBN(0xc1b97512, 0xc1ad8cf8), TOBN(0x193b4e9e, 0x99e0b697),
+           TOBN(0x939d2716, 0x01e85df0), TOBN(0x4fb265b3, 0xcd44eafd)},
+          {TOBN(0x321e7dcd, 0xe51e1ae2), TOBN(0x8e3a8ca6, 0xe3d8b096),
+           TOBN(0x8de46cb0, 0x52604998), TOBN(0x91099ad8, 0x39072aa7)}},
+         {{TOBN(0x2617f91c, 0x93aa96b8), TOBN(0x0fc8716b, 0x7fca2e13),
+           TOBN(0xa7106f5e, 0x95328723), TOBN(0xd1c9c40b, 0x262e6522)},
+          {TOBN(0xb9bafe86, 0x42b7c094), TOBN(0x1873439d, 0x1543c021),
+           TOBN(0xe1baa5de, 0x5cbefd5d), TOBN(0xa363fc5e, 0x521e8aff)}},
+         {{TOBN(0xefe6320d, 0xf862eaac), TOBN(0x14419c63, 0x22c647dc),
+           TOBN(0x0e06707c, 0x4e46d428), TOBN(0xcb6c834f, 0x4a178f8f)},
+          {TOBN(0x0f993a45, 0xd30f917c), TOBN(0xd4c4b049, 0x9879afee),
+           TOBN(0xb6142a1e, 0x70500063), TOBN(0x7c9b41c3, 0xa5d9d605)}},
+         {{TOBN(0xbc00fc2f, 0x2f8ba2c7), TOBN(0x0966eb2f, 0x7c67aa28),
+           TOBN(0x13f7b516, 0x5a786972), TOBN(0x3bfb7557, 0x8a2fbba0)},
+          {TOBN(0x131c4f23, 0x5a2b9620), TOBN(0xbff3ed27, 0x6faf46be),
+           TOBN(0x9b4473d1, 0x7e172323), TOBN(0x421e8878, 0x339f6246)}},
+         {{TOBN(0x0fa8587a, 0x25a41632), TOBN(0xc0814124, 0xa35b6c93),
+           TOBN(0x2b18a9f5, 0x59ebb8db), TOBN(0x264e3357, 0x76edb29c)},
+          {TOBN(0xaf245ccd, 0xc87c51e2), TOBN(0x16b3015b, 0x501e6214),
+           TOBN(0xbb31c560, 0x0a3882ce), TOBN(0x6961bb94, 0xfec11e04)}},
+         {{TOBN(0x3b825b8d, 0xeff7a3a0), TOBN(0xbec33738, 0xb1df7326),
+           TOBN(0x68ad747c, 0x99604a1f), TOBN(0xd154c934, 0x9a3bd499)},
+          {TOBN(0xac33506f, 0x1cc7a906), TOBN(0x73bb5392, 0x6c560e8f),
+           TOBN(0x6428fcbe, 0x263e3944), TOBN(0xc11828d5, 0x1c387434)}},
+         {{TOBN(0x3cd04be1, 0x3e4b12ff), TOBN(0xc3aad9f9, 0x2d88667c),
+           TOBN(0xc52ddcf8, 0x248120cf), TOBN(0x985a892e, 0x2a389532)},
+          {TOBN(0xfbb4b21b, 0x3bb85fa0), TOBN(0xf95375e0, 0x8dfc6269),
+           TOBN(0xfb4fb06c, 0x7ee2acea), TOBN(0x6785426e, 0x309c4d1f)}},
+         {{TOBN(0x659b17c8, 0xd8ceb147), TOBN(0x9b649eee, 0xb70a5554),
+           TOBN(0x6b7fa0b5, 0xac6bc634), TOBN(0xd99fe2c7, 0x1d6e732f)},
+          {TOBN(0x30e6e762, 0x8d3abba2), TOBN(0x18fee6e7, 0xa797b799),
+           TOBN(0x5c9d360d, 0xc696464d), TOBN(0xe3baeb48, 0x27bfde12)}},
+         {{TOBN(0x2bf5db47, 0xf23206d5), TOBN(0x2f6d3420, 0x1d260152),
+           TOBN(0x17b87653, 0x3f8ff89a), TOBN(0x5157c30c, 0x378fa458)},
+          {TOBN(0x7517c5c5, 0x2d4fb936), TOBN(0xef22f7ac, 0xe6518cdc),
+           TOBN(0xdeb483e6, 0xbf847a64), TOBN(0xf5084558, 0x92e0fa89)}}},
+        {{{TOBN(0xab9659d8, 0xdf7304d4), TOBN(0xb71bcf1b, 0xff210e8e),
+           TOBN(0xa9a2438b, 0xd73fbd60), TOBN(0x4595cd1f, 0x5d11b4de)},
+          {TOBN(0x9c0d329a, 0x4835859d), TOBN(0x4a0f0d2d, 0x7dbb6e56),
+           TOBN(0xc6038e5e, 0xdf928a4e), TOBN(0xc9429621, 0x8f5ad154)}},
+         {{TOBN(0x91213462, 0xf23f2d92), TOBN(0x6cab71bd, 0x60b94078),
+           TOBN(0x6bdd0a63, 0x176cde20), TOBN(0x54c9b20c, 0xee4d54bc)},
+          {TOBN(0x3cd2d8aa, 0x9f2ac02f), TOBN(0x03f8e617, 0x206eedb0),
+           TOBN(0xc7f68e16, 0x93086434), TOBN(0x831469c5, 0x92dd3db9)}},
+         {{TOBN(0x8521df24, 0x8f981354), TOBN(0x587e23ec, 0x3588a259),
+           TOBN(0xcbedf281, 0xd7a0992c), TOBN(0x06930a55, 0x38961407)},
+          {TOBN(0x09320deb, 0xbe5bbe21), TOBN(0xa7ffa5b5, 0x2491817f),
+           TOBN(0xe6c8b4d9, 0x09065160), TOBN(0xac4f3992, 0xfff6d2a9)}},
+         {{TOBN(0x7aa7a158, 0x3ae9c1bd), TOBN(0xe0af6d98, 0xe37ce240),
+           TOBN(0xe54342d9, 0x28ab38b4), TOBN(0xe8b75007, 0x0a1c98ca)},
+          {TOBN(0xefce86af, 0xe02358f2), TOBN(0x31b8b856, 0xea921228),
+           TOBN(0x052a1912, 0x0a1c67fc), TOBN(0xb4069ea4, 0xe3aead59)}},
+         {{TOBN(0x3232d6e2, 0x7fa03cb3), TOBN(0xdb938e5b, 0x0fdd7d88),
+           TOBN(0x04c1d2cd, 0x2ccbfc5d), TOBN(0xd2f45c12, 0xaf3a580f)},
+          {TOBN(0x592620b5, 0x7883e614), TOBN(0x5fd27e68, 0xbe7c5f26),
+           TOBN(0x139e45a9, 0x1567e1e3), TOBN(0x2cc71d2d, 0x44d8aaaf)}},
+         {{TOBN(0x4a9090cd, 0xe36d0757), TOBN(0xf722d7b1, 0xd9a29382),
+           TOBN(0xfb7fb04c, 0x04b48ddf), TOBN(0x628ad2a7, 0xebe16f43)},
+          {TOBN(0xcd3fbfb5, 0x20226040), TOBN(0x6c34ecb1, 0x5104b6c4),
+           TOBN(0x30c0754e, 0xc903c188), TOBN(0xec336b08, 0x2d23cab0)}},
+         {{TOBN(0x473d62a2, 0x1e206ee5), TOBN(0xf1e27480, 0x8c49a633),
+           TOBN(0x87ab956c, 0xe9f6b2c3), TOBN(0x61830b48, 0x62b606ea)},
+          {TOBN(0x67cd6846, 0xe78e815f), TOBN(0xfe40139f, 0x4c02082a),
+           TOBN(0x52bbbfcb, 0x952ec365), TOBN(0x74c11642, 0x6b9836ab)}},
+         {{TOBN(0x9f51439e, 0x558df019), TOBN(0x230da4ba, 0xac712b27),
+           TOBN(0x518919e3, 0x55185a24), TOBN(0x4dcefcdd, 0x84b78f50)},
+          {TOBN(0xa7d90fb2, 0xa47d4c5a), TOBN(0x55ac9abf, 0xb30e009e),
+           TOBN(0xfd2fc359, 0x74eed273), TOBN(0xb72d824c, 0xdbea8faf)}},
+         {{TOBN(0xce721a74, 0x4513e2ca), TOBN(0x0b418612, 0x38240b2c),
+           TOBN(0x05199968, 0xd5baa450), TOBN(0xeb1757ed, 0x2b0e8c25)},
+          {TOBN(0x6ebc3e28, 0x3dfac6d5), TOBN(0xb2431e2e, 0x48a237f5),
+           TOBN(0x2acb5e23, 0x52f61499), TOBN(0x5558a2a7, 0xe06c936b)}},
+         {{TOBN(0xd213f923, 0xcbb13d1b), TOBN(0x98799f42, 0x5bfb9bfe),
+           TOBN(0x1ae8ddc9, 0x701144a9), TOBN(0x0b8b3bb6, 0x4c5595ee)},
+          {TOBN(0x0ea9ef2e, 0x3ecebb21), TOBN(0x17cb6c4b, 0x3671f9a7),
+           TOBN(0x47ef464f, 0x726f1d1f), TOBN(0x171b9484, 0x6943a276)}},
+         {{TOBN(0x51a4ae2d, 0x7ef0329c), TOBN(0x08509222, 0x91c4402a),
+           TOBN(0x64a61d35, 0xafd45bbc), TOBN(0x38f096fe, 0x3035a851)},
+          {TOBN(0xc7468b74, 0xa1dec027), TOBN(0xe8cf10e7, 0x4fc7dcba),
+           TOBN(0xea35ff40, 0xf4a06353), TOBN(0x0b4c0dfa, 0x8b77dd66)}},
+         {{TOBN(0x779b8552, 0xde7e5c19), TOBN(0xfab28609, 0xc1c0256c),
+           TOBN(0x64f58eee, 0xabd4743d), TOBN(0x4e8ef838, 0x7b6cc93b)},
+          {TOBN(0xee650d26, 0x4cb1bf3d), TOBN(0x4c1f9d09, 0x73dedf61),
+           TOBN(0xaef7c9d7, 0xbfb70ced), TOBN(0x1ec0507e, 0x1641de1e)}},
+         {{TOBN(0xcd7e5cc7, 0xcde45079), TOBN(0xde173c9a, 0x516ac9e4),
+           TOBN(0x517a8494, 0xc170315c), TOBN(0x438fd905, 0x91d8e8fb)},
+          {TOBN(0x5145c506, 0xc7d9630b), TOBN(0x6457a87b, 0xf47d4d75),
+           TOBN(0xd31646bf, 0x0d9a80e8), TOBN(0x453add2b, 0xcef3aabe)}},
+         {{TOBN(0xc9941109, 0xa607419d), TOBN(0xfaa71e62, 0xbb6bca80),
+           TOBN(0x34158c13, 0x07c431f3), TOBN(0x594abebc, 0x992bc47a)},
+          {TOBN(0x6dfea691, 0xeb78399f), TOBN(0x48aafb35, 0x3f42cba4),
+           TOBN(0xedcd65af, 0x077c04f0), TOBN(0x1a29a366, 0xe884491a)}},
+         {{TOBN(0x023a40e5, 0x1c21f2bf), TOBN(0xf99a513c, 0xa5057aee),
+           TOBN(0xa3fe7e25, 0xbcab072e), TOBN(0x8568d2e1, 0x40e32bcf)},
+          {TOBN(0x904594eb, 0xd3f69d9f), TOBN(0x181a9733, 0x07affab1),
+           TOBN(0xe4d68d76, 0xb6e330f4), TOBN(0x87a6dafb, 0xc75a7fc1)}},
+         {{TOBN(0x549db2b5, 0xef7d9289), TOBN(0x2480d4a8, 0x197f015a),
+           TOBN(0x61d5590b, 0xc40493b6), TOBN(0x3a55b52e, 0x6f780331)},
+          {TOBN(0x40eb8115, 0x309eadb0), TOBN(0xdea7de5a, 0x92e5c625),
+           TOBN(0x64d631f0, 0xcc6a3d5a), TOBN(0x9d5e9d7c, 0x93e8dd61)}},
+         {{TOBN(0xf297bef5, 0x206d3ffc), TOBN(0x23d5e033, 0x7d808bd4),
+           TOBN(0x4a4f6912, 0xd24cf5ba), TOBN(0xe4d8163b, 0x09cdaa8a)},
+          {TOBN(0x0e0de9ef, 0xd3082e8e), TOBN(0x4fe1246c, 0x0192f360),
+           TOBN(0x1f900150, 0x4b8eee0a), TOBN(0x5219da81, 0xf1da391b)}},
+         {{TOBN(0x7bf6a5c1, 0xf7ea25aa), TOBN(0xd165e6bf, 0xfbb07d5f),
+           TOBN(0xe3539361, 0x89e78671), TOBN(0xa3fcac89, 0x2bac4219)},
+          {TOBN(0xdfab6fd4, 0xf0baa8ab), TOBN(0x5a4adac1, 0xe2c1c2e5),
+           TOBN(0x6cd75e31, 0x40d85849), TOBN(0xce263fea, 0x19b39181)}},
+         {{TOBN(0xcb6803d3, 0x07032c72), TOBN(0x7f40d5ce, 0x790968c8),
+           TOBN(0xa6de86bd, 0xdce978f0), TOBN(0x25547c4f, 0x368f751c)},
+          {TOBN(0xb1e685fd, 0x65fb2a9e), TOBN(0xce69336f, 0x1eb9179c),
+           TOBN(0xb15d1c27, 0x12504442), TOBN(0xb7df465c, 0xb911a06b)}},
+         {{TOBN(0xb8d804a3, 0x315980cd), TOBN(0x693bc492, 0xfa3bebf7),
+           TOBN(0x3578aeee, 0x2253c504), TOBN(0x158de498, 0xcd2474a2)},
+          {TOBN(0x1331f5c7, 0xcfda8368), TOBN(0xd2d7bbb3, 0x78d7177e),
+           TOBN(0xdf61133a, 0xf3c1e46e), TOBN(0x5836ce7d, 0xd30e7be8)}},
+         {{TOBN(0x83084f19, 0x94f834cb), TOBN(0xd35653d4, 0x429ed782),
+           TOBN(0xa542f16f, 0x59e58243), TOBN(0xc2b52f65, 0x0470a22d)},
+          {TOBN(0xe3b6221b, 0x18f23d96), TOBN(0xcb05abac, 0x3f5252b4),
+           TOBN(0xca00938b, 0x87d61402), TOBN(0x2f186cdd, 0x411933e4)}},
+         {{TOBN(0xe042ece5, 0x9a29a5c5), TOBN(0xb19b3c07, 0x3b6c8402),
+           TOBN(0xc97667c7, 0x19d92684), TOBN(0xb5624622, 0xebc66372)},
+          {TOBN(0x0cb96e65, 0x3c04fa02), TOBN(0x83a7176c, 0x8eaa39aa),
+           TOBN(0x2033561d, 0xeaa1633f), TOBN(0x45a9d086, 0x4533df73)}},
+         {{TOBN(0xe0542c1d, 0x3dc090bc), TOBN(0x82c996ef, 0xaa59c167),
+           TOBN(0xe3f735e8, 0x0ee7fc4d), TOBN(0x7b179393, 0x7c35db79)},
+          {TOBN(0xb6419e25, 0xf8c5dbfd), TOBN(0x4d9d7a1e, 0x1f327b04),
+           TOBN(0x979f6f9b, 0x298dfca8), TOBN(0xc7c5dff1, 0x8de9366a)}},
+         {{TOBN(0x1b7a588d, 0x04c82bdd), TOBN(0x68005534, 0xf8319dfd),
+           TOBN(0xde8a55b5, 0xd8eb9580), TOBN(0x5ea886da, 0x8d5bca81)},
+          {TOBN(0xe8530a01, 0x252a0b4d), TOBN(0x1bffb4fe, 0x35eaa0a1),
+           TOBN(0x2ad828b1, 0xd8e99563), TOBN(0x7de96ef5, 0x95f9cd87)}},
+         {{TOBN(0x4abb2d0c, 0xd77d970c), TOBN(0x03cfb933, 0xd33ef9cb),
+           TOBN(0xb0547c01, 0x8b211fe9), TOBN(0x2fe64809, 0xa56ed1c6)},
+          {TOBN(0xcb7d5624, 0xc2ac98cc), TOBN(0x2a1372c0, 0x1a393e33),
+           TOBN(0xc8d1ec1c, 0x29660521), TOBN(0xf3d31b04, 0xb37ac3e9)}},
+         {{TOBN(0xa29ae9df, 0x5ece6e7c), TOBN(0x0603ac8f, 0x0facfb55),
+           TOBN(0xcfe85b7a, 0xdda233a5), TOBN(0xe618919f, 0xbd75f0b8)},
+          {TOBN(0xf555a3d2, 0x99bf1603), TOBN(0x1f43afc9, 0xf184255a),
+           TOBN(0xdcdaf341, 0x319a3e02), TOBN(0xd3b117ef, 0x03903a39)}},
+         {{TOBN(0xe095da13, 0x65d1d131), TOBN(0x86f16367, 0xc37ad03e),
+           TOBN(0x5f37389e, 0x462cd8dd), TOBN(0xc103fa04, 0xd67a60e6)},
+          {TOBN(0x57c34344, 0xf4b478f0), TOBN(0xce91edd8, 0xe117c98d),
+           TOBN(0x001777b0, 0x231fc12e), TOBN(0x11ae47f2, 0xb207bccb)}},
+         {{TOBN(0xd983cf8d, 0x20f8a242), TOBN(0x7aff5b1d, 0xf22e1ad8),
+           TOBN(0x68fd11d0, 0x7fc4feb3), TOBN(0x5d53ae90, 0xb0f1c3e1)},
+          {TOBN(0x50fb7905, 0xec041803), TOBN(0x85e3c977, 0x14404888),
+           TOBN(0x0e67faed, 0xac628d8f), TOBN(0x2e865150, 0x6668532c)}},
+         {{TOBN(0x15acaaa4, 0x6a67a6b0), TOBN(0xf4cdee25, 0xb25cec41),
+           TOBN(0x49ee565a, 0xe4c6701e), TOBN(0x2a04ca66, 0xfc7d63d8)},
+          {TOBN(0xeb105018, 0xef0543fb), TOBN(0xf709a4f5, 0xd1b0d81d),
+           TOBN(0x5b906ee6, 0x2915d333), TOBN(0xf4a87412, 0x96f1f0ab)}},
+         {{TOBN(0xb6b82fa7, 0x4d82f4c2), TOBN(0x90725a60, 0x6804efb3),
+           TOBN(0xbc82ec46, 0xadc3425e), TOBN(0xb7b80581, 0x2787843e)},
+          {TOBN(0xdf46d91c, 0xdd1fc74c), TOBN(0xdc1c62cb, 0xe783a6c4),
+           TOBN(0x59d1b9f3, 0x1a04cbba), TOBN(0xd87f6f72, 0x95e40764)}},
+         {{TOBN(0x02b4cfc1, 0x317f4a76), TOBN(0x8d2703eb, 0x91036bce),
+           TOBN(0x98206cc6, 0xa5e72a56), TOBN(0x57be9ed1, 0xcf53fb0f)},
+          {TOBN(0x09374571, 0xef0b17ac), TOBN(0x74b2655e, 0xd9181b38),
+           TOBN(0xc8f80ea8, 0x89935d0e), TOBN(0xc0d9e942, 0x91529936)}},
+         {{TOBN(0x19686041, 0x1e84e0e5), TOBN(0xa5db84d3, 0xaea34c93),
+           TOBN(0xf9d5bb19, 0x7073a732), TOBN(0xb8d2fe56, 0x6bcfd7c0)},
+          {TOBN(0x45775f36, 0xf3eb82fa), TOBN(0x8cb20ccc, 0xfdff8b58),
+           TOBN(0x1659b65f, 0x8374c110), TOBN(0xb8b4a422, 0x330c789a)}},
+         {{TOBN(0x75e3c3ea, 0x6fe8208b), TOBN(0xbd74b9e4, 0x286e78fe),
+           TOBN(0x0be2e81b, 0xd7d93a1a), TOBN(0x7ed06e27, 0xdd0a5aae)},
+          {TOBN(0x721f5a58, 0x6be8b800), TOBN(0x428299d1, 0xd846db28),
+           TOBN(0x95cb8e6b, 0x5be88ed3), TOBN(0xc3186b23, 0x1c034e11)}},
+         {{TOBN(0xa6312c9e, 0x8977d99b), TOBN(0xbe944331, 0x83f531e7),
+           TOBN(0x8232c0c2, 0x18d3b1d4), TOBN(0x617aae8b, 0xe1247b73)},
+          {TOBN(0x40153fc4, 0x282aec3b), TOBN(0xc6063d2f, 0xf7b8f823),
+           TOBN(0x68f10e58, 0x3304f94c), TOBN(0x31efae74, 0xee676346)}},
+         {{TOBN(0xbadb6c6d, 0x40a9b97c), TOBN(0x14702c63, 0x4f666256),
+           TOBN(0xdeb954f1, 0x5184b2e3), TOBN(0x5184a526, 0x94b6ca40)},
+          {TOBN(0xfff05337, 0x003c32ea), TOBN(0x5aa374dd, 0x205974c7),
+           TOBN(0x9a763854, 0x4b0dd71a), TOBN(0x459cd27f, 0xdeb947ec)}},
+         {{TOBN(0xa6e28161, 0x459c2b92), TOBN(0x2f020fa8, 0x75ee8ef5),
+           TOBN(0xb132ec2d, 0x30b06310), TOBN(0xc3e15899, 0xbc6a4530)},
+          {TOBN(0xdc5f53fe, 0xaa3f451a), TOBN(0x3a3c7f23, 0xc2d9acac),
+           TOBN(0x2ec2f892, 0x6b27e58b), TOBN(0x68466ee7, 0xd742799f)}},
+         {{TOBN(0x98324dd4, 0x1fa26613), TOBN(0xa2dc6dab, 0xbdc29d63),
+           TOBN(0xf9675faa, 0xd712d657), TOBN(0x813994be, 0x21fd8d15)},
+          {TOBN(0x5ccbb722, 0xfd4f7553), TOBN(0x5135ff8b, 0xf3a36b20),
+           TOBN(0x44be28af, 0x69559df5), TOBN(0x40b65bed, 0x9d41bf30)}},
+         {{TOBN(0xd98bf2a4, 0x3734e520), TOBN(0x5e3abbe3, 0x209bdcba),
+           TOBN(0x77c76553, 0xbc945b35), TOBN(0x5331c093, 0xc6ef14aa)},
+          {TOBN(0x518ffe29, 0x76b60c80), TOBN(0x2285593b, 0x7ace16f8),
+           TOBN(0xab1f64cc, 0xbe2b9784), TOBN(0xe8f2c0d9, 0xab2421b6)}},
+         {{TOBN(0x617d7174, 0xc1df065c), TOBN(0xafeeb5ab, 0x5f6578fa),
+           TOBN(0x16ff1329, 0x263b54a8), TOBN(0x45c55808, 0xc990dce3)},
+          {TOBN(0x42eab6c0, 0xecc8c177), TOBN(0x799ea9b5, 0x5982ecaa),
+           TOBN(0xf65da244, 0xb607ef8e), TOBN(0x8ab226ce, 0x32a3fc2c)}},
+         {{TOBN(0x745741e5, 0x7ea973dc), TOBN(0x5c00ca70, 0x20888f2e),
+           TOBN(0x7cdce3cf, 0x45fd9cf1), TOBN(0x8a741ef1, 0x5507f872)},
+          {TOBN(0x47c51c2f, 0x196b4cec), TOBN(0x70d08e43, 0xc97ea618),
+           TOBN(0x930da15c, 0x15b18a2b), TOBN(0x33b6c678, 0x2f610514)}},
+         {{TOBN(0xc662e4f8, 0x07ac9794), TOBN(0x1eccf050, 0xba06cb79),
+           TOBN(0x1ff08623, 0xe7d954e5), TOBN(0x6ef2c5fb, 0x24cf71c3)},
+          {TOBN(0xb2c063d2, 0x67978453), TOBN(0xa0cf3796, 0x1d654af8),
+           TOBN(0x7cb242ea, 0x7ebdaa37), TOBN(0x206e0b10, 0xb86747e0)}},
+         {{TOBN(0x481dae5f, 0xd5ecfefc), TOBN(0x07084fd8, 0xc2bff8fc),
+           TOBN(0x8040a01a, 0xea324596), TOBN(0x4c646980, 0xd4de4036)},
+          {TOBN(0x9eb8ab4e, 0xd65abfc3), TOBN(0xe01cb91f, 0x13541ec7),
+           TOBN(0x8f029adb, 0xfd695012), TOBN(0x9ae28483, 0x3c7569ec)}},
+         {{TOBN(0xa5614c9e, 0xa66d80a1), TOBN(0x680a3e44, 0x75f5f911),
+           TOBN(0x0c07b14d, 0xceba4fc1), TOBN(0x891c285b, 0xa13071c1)},
+          {TOBN(0xcac67ceb, 0x799ece3c), TOBN(0x29b910a9, 0x41e07e27),
+           TOBN(0x66bdb409, 0xf2e43123), TOBN(0x06f8b137, 0x7ac9ecbe)}},
+         {{TOBN(0x5981fafd, 0x38547090), TOBN(0x19ab8b9f, 0x85e3415d),
+           TOBN(0xfc28c194, 0xc7e31b27), TOBN(0x843be0aa, 0x6fbcbb42)},
+          {TOBN(0xf3b1ed43, 0xa6db836c), TOBN(0x2a1330e4, 0x01a45c05),
+           TOBN(0x4f19f3c5, 0x95c1a377), TOBN(0xa85f39d0, 0x44b5ee33)}},
+         {{TOBN(0x3da18e6d, 0x4ae52834), TOBN(0x5a403b39, 0x7423dcb0),
+           TOBN(0xbb555e0a, 0xf2374aef), TOBN(0x2ad599c4, 0x1e8ca111)},
+          {TOBN(0x1b3a2fb9, 0x014b3bf8), TOBN(0x73092684, 0xf66d5007),
+           TOBN(0x079f1426, 0xc4340102), TOBN(0x1827cf81, 0x8fddf4de)}},
+         {{TOBN(0xc83605f6, 0xf10ff927), TOBN(0xd3871451, 0x23739fc6),
+           TOBN(0x6d163450, 0xcac1c2cc), TOBN(0x6b521296, 0xa2ec1ac5)},
+          {TOBN(0x0606c4f9, 0x6e3cb4a5), TOBN(0xe47d3f41, 0x778abff7),
+           TOBN(0x425a8d5e, 0xbe8e3a45), TOBN(0x53ea9e97, 0xa6102160)}},
+         {{TOBN(0x477a106e, 0x39cbb688), TOBN(0x532401d2, 0xf3386d32),
+           TOBN(0x8e564f64, 0xb1b9b421), TOBN(0xca9b8388, 0x81dad33f)},
+          {TOBN(0xb1422b4e, 0x2093913e), TOBN(0x533d2f92, 0x69bc8112),
+           TOBN(0x3fa017be, 0xebe7b2c7), TOBN(0xb2767c4a, 0xcaf197c6)}},
+         {{TOBN(0xc925ff87, 0xaedbae9f), TOBN(0x7daf0eb9, 0x36880a54),
+           TOBN(0x9284ddf5, 0x9c4d0e71), TOBN(0x1581cf93, 0x316f8cf5)},
+          {TOBN(0x3eeca887, 0x3ac1f452), TOBN(0xb417fce9, 0xfb6aeffe),
+           TOBN(0xa5918046, 0xeefb8dc3), TOBN(0x73d318ac, 0x02209400)}},
+         {{TOBN(0xe800400f, 0x728693e5), TOBN(0xe87d814b, 0x339927ed),
+           TOBN(0x93e94d3b, 0x57ea9910), TOBN(0xff8a35b6, 0x2245fb69)},
+          {TOBN(0x043853d7, 0x7f200d34), TOBN(0x470f1e68, 0x0f653ce1),
+           TOBN(0x81ac05bd, 0x59a06379), TOBN(0xa14052c2, 0x03930c29)}},
+         {{TOBN(0x6b72fab5, 0x26bc2797), TOBN(0x13670d16, 0x99f16771),
+           TOBN(0x00170052, 0x1e3e48d1), TOBN(0x978fe401, 0xb7adf678)},
+          {TOBN(0x55ecfb92, 0xd41c5dd4), TOBN(0x5ff8e247, 0xc7b27da5),
+           TOBN(0xe7518272, 0x013fb606), TOBN(0x5768d7e5, 0x2f547a3c)}},
+         {{TOBN(0xbb24eaa3, 0x60017a5f), TOBN(0x6b18e6e4, 0x9c64ce9b),
+           TOBN(0xc225c655, 0x103dde07), TOBN(0xfc3672ae, 0x7592f7ea)},
+          {TOBN(0x9606ad77, 0xd06283a1), TOBN(0x542fc650, 0xe4d59d99),
+           TOBN(0xabb57c49, 0x2a40e7c2), TOBN(0xac948f13, 0xa8db9f55)}},
+         {{TOBN(0x6d4c9682, 0xb04465c3), TOBN(0xe3d062fa, 0x6468bd15),
+           TOBN(0xa51729ac, 0x5f318d7e), TOBN(0x1fc87df6, 0x9eb6fc95)},
+          {TOBN(0x63d146a8, 0x0591f652), TOBN(0xa861b8f7, 0x589621aa),
+           TOBN(0x59f5f15a, 0xce31348c), TOBN(0x8f663391, 0x440da6da)}},
+         {{TOBN(0xcfa778ac, 0xb591ffa3), TOBN(0x027ca9c5, 0x4cdfebce),
+           TOBN(0xbe8e05a5, 0x444ea6b3), TOBN(0x8aab4e69, 0xa78d8254)},
+          {TOBN(0x2437f04f, 0xb474d6b8), TOBN(0x6597ffd4, 0x045b3855),
+           TOBN(0xbb0aea4e, 0xca47ecaa), TOBN(0x568aae83, 0x85c7ebfc)}},
+         {{TOBN(0x0e966e64, 0xc73b2383), TOBN(0x49eb3447, 0xd17d8762),
+           TOBN(0xde107821, 0x8da05dab), TOBN(0x443d8baa, 0x016b7236)},
+          {TOBN(0x163b63a5, 0xea7610d6), TOBN(0xe47e4185, 0xce1ca979),
+           TOBN(0xae648b65, 0x80baa132), TOBN(0xebf53de2, 0x0e0d5b64)}},
+         {{TOBN(0x8d3bfcb4, 0xd3c8c1ca), TOBN(0x0d914ef3, 0x5d04b309),
+           TOBN(0x55ef6415, 0x3de7d395), TOBN(0xbde1666f, 0x26b850e8)},
+          {TOBN(0xdbe1ca6e, 0xd449ab19), TOBN(0x8902b322, 0xe89a2672),
+           TOBN(0xb1674b7e, 0xdacb7a53), TOBN(0x8e9faf6e, 0xf52523ff)}},
+         {{TOBN(0x6ba535da, 0x9a85788b), TOBN(0xd21f03ae, 0xbd0626d4),
+           TOBN(0x099f8c47, 0xe873dc64), TOBN(0xcda8564d, 0x018ec97e)},
+          {TOBN(0x3e8d7a5c, 0xde92c68c), TOBN(0x78e035a1, 0x73323cc4),
+           TOBN(0x3ef26275, 0xf880ff7c), TOBN(0xa4ee3dff, 0x273eedaa)}},
+         {{TOBN(0x58823507, 0xaf4e18f8), TOBN(0x967ec9b5, 0x0672f328),
+           TOBN(0x9ded19d9, 0x559d3186), TOBN(0x5e2ab3de, 0x6cdce39c)},
+          {TOBN(0xabad6e4d, 0x11c226df), TOBN(0xf9783f43, 0x87723014),
+           TOBN(0x9a49a0cf, 0x1a885719), TOBN(0xfc0c1a5a, 0x90da9dbf)}},
+         {{TOBN(0x8bbaec49, 0x571d92ac), TOBN(0x569e85fe, 0x4692517f),
+           TOBN(0x8333b014, 0xa14ea4af), TOBN(0x32f2a62f, 0x12e5c5ad)},
+          {TOBN(0x98c2ce3a, 0x06d89b85), TOBN(0xb90741aa, 0x2ff77a08),
+           TOBN(0x2530defc, 0x01f795a2), TOBN(0xd6e5ba0b, 0x84b3c199)}},
+         {{TOBN(0x7d8e8451, 0x12e4c936), TOBN(0xae419f7d, 0xbd0be17b),
+           TOBN(0xa583fc8c, 0x22262bc9), TOBN(0x6b842ac7, 0x91bfe2bd)},
+          {TOBN(0x33cef4e9, 0x440d6827), TOBN(0x5f69f4de, 0xef81fb14),
+           TOBN(0xf16cf6f6, 0x234fbb92), TOBN(0x76ae3fc3, 0xd9e7e158)}},
+         {{TOBN(0x4e89f6c2, 0xe9740b33), TOBN(0x677bc85d, 0x4962d6a1),
+           TOBN(0x6c6d8a7f, 0x68d10d15), TOBN(0x5f9a7224, 0x0257b1cd)},
+          {TOBN(0x7096b916, 0x4ad85961), TOBN(0x5f8c47f7, 0xe657ab4a),
+           TOBN(0xde57d7d0, 0xf7461d7e), TOBN(0x7eb6094d, 0x80ce5ee2)}},
+         {{TOBN(0x0b1e1dfd, 0x34190547), TOBN(0x8a394f43, 0xf05dd150),
+           TOBN(0x0a9eb24d, 0x97df44e6), TOBN(0x78ca06bf, 0x87675719)},
+          {TOBN(0x6f0b3462, 0x6ffeec22), TOBN(0x9d91bcea, 0x36cdd8fb),
+           TOBN(0xac83363c, 0xa105be47), TOBN(0x81ba76c1, 0x069710e3)}},
+         {{TOBN(0x3d1b24cb, 0x28c682c6), TOBN(0x27f25228, 0x8612575b),
+           TOBN(0xb587c779, 0xe8e66e98), TOBN(0x7b0c03e9, 0x405eb1fe)},
+          {TOBN(0xfdf0d030, 0x15b548e7), TOBN(0xa8be76e0, 0x38b36af7),
+           TOBN(0x4cdab04a, 0x4f310c40), TOBN(0x6287223e, 0xf47ecaec)}},
+         {{TOBN(0x678e6055, 0x8b399320), TOBN(0x61fe3fa6, 0xc01e4646),
+           TOBN(0xc482866b, 0x03261a5e), TOBN(0xdfcf45b8, 0x5c2f244a)},
+          {TOBN(0x8fab9a51, 0x2f684b43), TOBN(0xf796c654, 0xc7220a66),
+           TOBN(0x1d90707e, 0xf5afa58f), TOBN(0x2c421d97, 0x4fdbe0de)}},
+         {{TOBN(0xc4f4cda3, 0xaf2ebc2f), TOBN(0xa0af843d, 0xcb4efe24),
+           TOBN(0x53b857c1, 0x9ccd10b1), TOBN(0xddc9d1eb, 0x914d3e04)},
+          {TOBN(0x7bdec8bb, 0x62771deb), TOBN(0x829277aa, 0x91c5aa81),
+           TOBN(0x7af18dd6, 0x832391ae), TOBN(0x1740f316, 0xc71a84ca)}}},
+        {{{TOBN(0x8928e99a, 0xeeaf8c49), TOBN(0xee7aa73d, 0x6e24d728),
+           TOBN(0x4c5007c2, 0xe72b156c), TOBN(0x5fcf57c5, 0xed408a1d)},
+          {TOBN(0x9f719e39, 0xb6057604), TOBN(0x7d343c01, 0xc2868bbf),
+           TOBN(0x2cca254b, 0x7e103e2d), TOBN(0xe6eb38a9, 0xf131bea2)}},
+         {{TOBN(0xb33e624f, 0x8be762b4), TOBN(0x2a9ee4d1, 0x058e3413),
+           TOBN(0x968e6369, 0x67d805fa), TOBN(0x9848949b, 0x7db8bfd7)},
+          {TOBN(0x5308d7e5, 0xd23a8417), TOBN(0x892f3b1d, 0xf3e29da5),
+           TOBN(0xc95c139e, 0x3dee471f), TOBN(0x8631594d, 0xd757e089)}},
+         {{TOBN(0xe0c82a3c, 0xde918dcc), TOBN(0x2e7b5994, 0x26fdcf4b),
+           TOBN(0x82c50249, 0x32cb1b2d), TOBN(0xea613a9d, 0x7657ae07)},
+          {TOBN(0xc2eb5f6c, 0xf1fdc9f7), TOBN(0xb6eae8b8, 0x879fe682),
+           TOBN(0x253dfee0, 0x591cbc7f), TOBN(0x000da713, 0x3e1290e6)}},
+         {{TOBN(0x1083e2ea, 0x1f095615), TOBN(0x0a28ad77, 0x14e68c33),
+           TOBN(0x6bfc0252, 0x3d8818be), TOBN(0xb585113a, 0xf35850cd)},
+          {TOBN(0x7d935f0b, 0x30df8aa1), TOBN(0xaddda07c, 0x4ab7e3ac),
+           TOBN(0x92c34299, 0x552f00cb), TOBN(0xc33ed1de, 0x2909df6c)}},
+         {{TOBN(0x22c2195d, 0x80e87766), TOBN(0x9e99e6d8, 0x9ddf4ac0),
+           TOBN(0x09642e4e, 0x65e74934), TOBN(0x2610ffa2, 0xff1ff241)},
+          {TOBN(0x4d1d47d4, 0x751c8159), TOBN(0x697b4985, 0xaf3a9363),
+           TOBN(0x0318ca46, 0x87477c33), TOBN(0xa90cb565, 0x9441eff3)}},
+         {{TOBN(0x58bb3848, 0x36f024cb), TOBN(0x85be1f77, 0x36016168),
+           TOBN(0x6c59587c, 0xdc7e07f1), TOBN(0x191be071, 0xaf1d8f02)},
+          {TOBN(0xbf169fa5, 0xcca5e55c), TOBN(0x3864ba3c, 0xf7d04eac),
+           TOBN(0x915e367f, 0x8d7d05db), TOBN(0xb48a876d, 0xa6549e5d)}},
+         {{TOBN(0xef89c656, 0x580e40a2), TOBN(0xf194ed8c, 0x728068bc),
+           TOBN(0x74528045, 0xa47990c9), TOBN(0xf53fc7d7, 0x5e1a4649)},
+          {TOBN(0xbec5ae9b, 0x78593e7d), TOBN(0x2cac4ee3, 0x41db65d7),
+           TOBN(0xa8c1eb24, 0x04a3d39b), TOBN(0x53b7d634, 0x03f8f3ef)}},
+         {{TOBN(0x2dc40d48, 0x3e07113c), TOBN(0x6e4a5d39, 0x7d8b63ae),
+           TOBN(0x5582a94b, 0x79684c2b), TOBN(0x932b33d4, 0x622da26c)},
+          {TOBN(0xf534f651, 0x0dbbf08d), TOBN(0x211d07c9, 0x64c23a52),
+           TOBN(0x0eeece0f, 0xee5bdc9b), TOBN(0xdf178168, 0xf7015558)}},
+         {{TOBN(0xd4294635, 0x0a712229), TOBN(0x93cbe448, 0x09273f8c),
+           TOBN(0x00b095ef, 0x8f13bc83), TOBN(0xbb741972, 0x8798978c)},
+          {TOBN(0x9d7309a2, 0x56dbe6e7), TOBN(0xe578ec56, 0x5a5d39ec),
+           TOBN(0x3961151b, 0x851f9a31), TOBN(0x2da7715d, 0xe5709eb4)}},
+         {{TOBN(0x867f3017, 0x53dfabf0), TOBN(0x728d2078, 0xb8e39259),
+           TOBN(0x5c75a0cd, 0x815d9958), TOBN(0xf84867a6, 0x16603be1)},
+          {TOBN(0xc865b13d, 0x70e35b1c), TOBN(0x02414468, 0x19b03e2c),
+           TOBN(0xe46041da, 0xac1f3121), TOBN(0x7c9017ad, 0x6f028a7c)}},
+         {{TOBN(0xabc96de9, 0x0a482873), TOBN(0x4265d6b1, 0xb77e54d4),
+           TOBN(0x68c38e79, 0xa57d88e7), TOBN(0xd461d766, 0x9ce82de3)},
+          {TOBN(0x817a9ec5, 0x64a7e489), TOBN(0xcc5675cd, 0xa0def5f2),
+           TOBN(0x9a00e785, 0x985d494e), TOBN(0xc626833f, 0x1b03514a)}},
+         {{TOBN(0xabe7905a, 0x83cdd60e), TOBN(0x50602fb5, 0xa1170184),
+           TOBN(0x689886cd, 0xb023642a), TOBN(0xd568d090, 0xa6e1fb00)},
+          {TOBN(0x5b1922c7, 0x0259217f), TOBN(0x93831cd9, 0xc43141e4),
+           TOBN(0xdfca3587, 0x0c95f86e), TOBN(0xdec2057a, 0x568ae828)}},
+         {{TOBN(0xc44ea599, 0xf98a759a), TOBN(0x55a0a7a2, 0xf7c23c1d),
+           TOBN(0xd5ffb6e6, 0x94c4f687), TOBN(0x3563cce2, 0x12848478)},
+          {TOBN(0x812b3517, 0xe7b1fbe1), TOBN(0x8a7dc979, 0x4f7338e0),
+           TOBN(0x211ecee9, 0x52d048db), TOBN(0x2eea4056, 0xc86ea3b8)}},
+         {{TOBN(0xd8cb68a7, 0xba772b34), TOBN(0xe16ed341, 0x5f4e2541),
+           TOBN(0x9b32f6a6, 0x0fec14db), TOBN(0xeee376f7, 0x391698be)},
+          {TOBN(0xe9a7aa17, 0x83674c02), TOBN(0x65832f97, 0x5843022a),
+           TOBN(0x29f3a8da, 0x5ba4990f), TOBN(0x79a59c3a, 0xfb8e3216)}},
+         {{TOBN(0x9cdc4d2e, 0xbd19bb16), TOBN(0xc6c7cfd0, 0xb3262d86),
+           TOBN(0xd4ce14d0, 0x969c0b47), TOBN(0x1fa352b7, 0x13e56128)},
+          {TOBN(0x383d55b8, 0x973db6d3), TOBN(0x71836850, 0xe8e5b7bf),
+           TOBN(0xc7714596, 0xe6bb571f), TOBN(0x259df31f, 0x2d5b2dd2)}},
+         {{TOBN(0x568f8925, 0x913cc16d), TOBN(0x18bc5b6d, 0xe1a26f5a),
+           TOBN(0xdfa413be, 0xf5f499ae), TOBN(0xf8835dec, 0xc3f0ae84)},
+          {TOBN(0xb6e60bd8, 0x65a40ab0), TOBN(0x65596439, 0x194b377e),
+           TOBN(0xbcd85625, 0x92084a69), TOBN(0x5ce433b9, 0x4f23ede0)}},
+         {{TOBN(0xe8e8f04f, 0x6ad65143), TOBN(0x11511827, 0xd6e14af6),
+           TOBN(0x3d390a10, 0x8295c0c7), TOBN(0x71e29ee4, 0x621eba16)},
+          {TOBN(0xa588fc09, 0x63717b46), TOBN(0x02be02fe, 0xe06ad4a2),
+           TOBN(0x931558c6, 0x04c22b22), TOBN(0xbb4d4bd6, 0x12f3c849)}},
+         {{TOBN(0x54a4f496, 0x20efd662), TOBN(0x92ba6d20, 0xc5952d14),
+           TOBN(0x2db8ea1e, 0xcc9784c2), TOBN(0x81cc10ca, 0x4b353644)},
+          {TOBN(0x40b570ad, 0x4b4d7f6c), TOBN(0x5c9f1d96, 0x84a1dcd2),
+           TOBN(0x01379f81, 0x3147e797), TOBN(0xe5c6097b, 0x2bd499f5)}},
+         {{TOBN(0x40dcafa6, 0x328e5e20), TOBN(0xf7b5244a, 0x54815550),
+           TOBN(0xb9a4f118, 0x47bfc978), TOBN(0x0ea0e79f, 0xd25825b1)},
+          {TOBN(0xa50f96eb, 0x646c7ecf), TOBN(0xeb811493, 0x446dea9d),
+           TOBN(0x2af04677, 0xdfabcf69), TOBN(0xbe3a068f, 0xc713f6e8)}},
+         {{TOBN(0x860d523d, 0x42e06189), TOBN(0xbf077941, 0x4e3aff13),
+           TOBN(0x0b616dca, 0xc1b20650), TOBN(0xe66dd6d1, 0x2131300d)},
+          {TOBN(0xd4a0fd67, 0xff99abde), TOBN(0xc9903550, 0xc7aac50d),
+           TOBN(0x022ecf8b, 0x7c46b2d7), TOBN(0x3333b1e8, 0x3abf92af)}},
+         {{TOBN(0x11cc113c, 0x6c491c14), TOBN(0x05976688, 0x80dd3f88),
+           TOBN(0xf5b4d9e7, 0x29d932ed), TOBN(0xe982aad8, 0xa2c38b6d)},
+          {TOBN(0x6f925347, 0x8be0dcf0), TOBN(0x700080ae, 0x65ca53f2),
+           TOBN(0xd8131156, 0x443ca77f), TOBN(0xe92d6942, 0xec51f984)}},
+         {{TOBN(0xd2a08af8, 0x85dfe9ae), TOBN(0xd825d9a5, 0x4d2a86ca),
+           TOBN(0x2c53988d, 0x39dff020), TOBN(0xf38b135a, 0x430cdc40)},
+          {TOBN(0x0c918ae0, 0x62a7150b), TOBN(0xf31fd8de, 0x0c340e9b),
+           TOBN(0xafa0e7ae, 0x4dbbf02e), TOBN(0x5847fb2a, 0x5eba6239)}},
+         {{TOBN(0x6b1647dc, 0xdccbac8b), TOBN(0xb642aa78, 0x06f485c8),
+           TOBN(0x873f3765, 0x7038ecdf), TOBN(0x2ce5e865, 0xfa49d3fe)},
+          {TOBN(0xea223788, 0xc98c4400), TOBN(0x8104a8cd, 0xf1fa5279),
+           TOBN(0xbcf7cc7a, 0x06becfd7), TOBN(0x49424316, 0xc8f974ae)}},
+         {{TOBN(0xc0da65e7, 0x84d6365d), TOBN(0xbcb7443f, 0x8f759fb8),
+           TOBN(0x35c712b1, 0x7ae81930), TOBN(0x80428dff, 0x4c6e08ab)},
+          {TOBN(0xf19dafef, 0xa4faf843), TOBN(0xced8538d, 0xffa9855f),
+           TOBN(0x20ac409c, 0xbe3ac7ce), TOBN(0x358c1fb6, 0x882da71e)}},
+         {{TOBN(0xafa9c0e5, 0xfd349961), TOBN(0x2b2cfa51, 0x8421c2fc),
+           TOBN(0x2a80db17, 0xf3a28d38), TOBN(0xa8aba539, 0x5d138e7e)},
+          {TOBN(0x52012d1d, 0x6e96eb8d), TOBN(0x65d8dea0, 0xcbaf9622),
+           TOBN(0x57735447, 0xb264f56c), TOBN(0xbeebef3f, 0x1b6c8da2)}},
+         {{TOBN(0xfc346d98, 0xce785254), TOBN(0xd50e8d72, 0xbb64a161),
+           TOBN(0xc03567c7, 0x49794add), TOBN(0x15a76065, 0x752c7ef6)},
+          {TOBN(0x59f3a222, 0x961f23d6), TOBN(0x378e4438, 0x73ecc0b0),
+           TOBN(0xc74be434, 0x5a82fde4), TOBN(0xae509af2, 0xd8b9cf34)}},
+         {{TOBN(0x4a61ee46, 0x577f44a1), TOBN(0xe09b748c, 0xb611deeb),
+           TOBN(0xc0481b2c, 0xf5f7b884), TOBN(0x35626678, 0x61acfa6b)},
+          {TOBN(0x37f4c518, 0xbf8d21e6), TOBN(0x22d96531, 0xb205a76d),
+           TOBN(0x37fb85e1, 0x954073c0), TOBN(0xbceafe4f, 0x65b3a567)}},
+         {{TOBN(0xefecdef7, 0xbe42a582), TOBN(0xd3fc6080, 0x65046be6),
+           TOBN(0xc9af13c8, 0x09e8dba9), TOBN(0x1e6c9847, 0x641491ff)},
+          {TOBN(0x3b574925, 0xd30c31f7), TOBN(0xb7eb72ba, 0xac2a2122),
+           TOBN(0x776a0dac, 0xef0859e7), TOBN(0x06fec314, 0x21900942)}},
+         {{TOBN(0x2464bc10, 0xf8c22049), TOBN(0x9bfbcce7, 0x875ebf69),
+           TOBN(0xd7a88e2a, 0x4336326b), TOBN(0xda05261c, 0x5bc2acfa)},
+          {TOBN(0xc29f5bdc, 0xeba7efc8), TOBN(0x471237ca, 0x25dbbf2e),
+           TOBN(0xa72773f2, 0x2975f127), TOBN(0xdc744e8e, 0x04d0b326)}},
+         {{TOBN(0x38a7ed16, 0xa56edb73), TOBN(0x64357e37, 0x2c007e70),
+           TOBN(0xa167d15b, 0x5080b400), TOBN(0x07b41164, 0x23de4be1)},
+          {TOBN(0xb2d91e32, 0x74c89883), TOBN(0x3c162821, 0x2882e7ed),
+           TOBN(0xad6b36ba, 0x7503e482), TOBN(0x48434e8e, 0x0ea34331)}},
+         {{TOBN(0x79f4f24f, 0x2c7ae0b9), TOBN(0xc46fbf81, 0x1939b44a),
+           TOBN(0x76fefae8, 0x56595eb1), TOBN(0x417b66ab, 0xcd5f29c7)},
+          {TOBN(0x5f2332b2, 0xc5ceec20), TOBN(0xd69661ff, 0xe1a1cae2),
+           TOBN(0x5ede7e52, 0x9b0286e6), TOBN(0x9d062529, 0xe276b993)}},
+         {{TOBN(0x324794b0, 0x7e50122b), TOBN(0xdd744f8b, 0x4af07ca5),
+           TOBN(0x30a12f08, 0xd63fc97b), TOBN(0x39650f1a, 0x76626d9d)},
+          {TOBN(0x101b47f7, 0x1fa38477), TOBN(0x3d815f19, 0xd4dc124f),
+           TOBN(0x1569ae95, 0xb26eb58a), TOBN(0xc3cde188, 0x95fb1887)}},
+         {{TOBN(0x54e9f37b, 0xf9539a48), TOBN(0xb0100e06, 0x7408c1a5),
+           TOBN(0x821d9811, 0xea580cbb), TOBN(0x8af52d35, 0x86e50c56)},
+          {TOBN(0xdfbd9d47, 0xdbbf698b), TOBN(0x2961a1ea, 0x03dc1c73),
+           TOBN(0x203d38f8, 0xe76a5df8), TOBN(0x08a53a68, 0x6def707a)}},
+         {{TOBN(0x26eefb48, 0x1bee45d4), TOBN(0xb3cee346, 0x3c688036),
+           TOBN(0x463c5315, 0xc42f2469), TOBN(0x19d84d2e, 0x81378162)},
+          {TOBN(0x22d7c3c5, 0x1c4d349f), TOBN(0x65965844, 0x163d59c5),
+           TOBN(0xcf198c56, 0xb8abceae), TOBN(0x6fb1fb1b, 0x628559d5)}},
+         {{TOBN(0x8bbffd06, 0x07bf8fe3), TOBN(0x46259c58, 0x3467734b),
+           TOBN(0xd8953cea, 0x35f7f0d3), TOBN(0x1f0bece2, 0xd65b0ff1)},
+          {TOBN(0xf7d5b4b3, 0xf3c72914), TOBN(0x29e8ea95, 0x3cb53389),
+           TOBN(0x4a365626, 0x836b6d46), TOBN(0xe849f910, 0xea174fde)}},
+         {{TOBN(0x7ec62fbb, 0xf4737f21), TOBN(0xd8dba5ab, 0x6209f5ac),
+           TOBN(0x24b5d7a9, 0xa5f9adbe), TOBN(0x707d28f7, 0xa61dc768)},
+          {TOBN(0x7711460b, 0xcaa999ea), TOBN(0xba7b174d, 0x1c92e4cc),
+           TOBN(0x3c4bab66, 0x18d4bf2d), TOBN(0xb8f0c980, 0xeb8bd279)}},
+         {{TOBN(0x024bea9a, 0x324b4737), TOBN(0xfba9e423, 0x32a83bca),
+           TOBN(0x6e635643, 0xa232dced), TOBN(0x99619367, 0x2571c8ba)},
+          {TOBN(0xe8c9f357, 0x54b7032b), TOBN(0xf936b3ba, 0x2442d54a),
+           TOBN(0x2263f0f0, 0x8290c65a), TOBN(0x48989780, 0xee2c7fdb)}},
+         {{TOBN(0xadc5d55a, 0x13d4f95e), TOBN(0x737cff85, 0xad9b8500),
+           TOBN(0x271c557b, 0x8a73f43d), TOBN(0xbed617a4, 0xe18bc476)},
+          {TOBN(0x66245401, 0x7dfd8ab2), TOBN(0xae7b89ae, 0x3a2870aa),
+           TOBN(0x1b555f53, 0x23a7e545), TOBN(0x6791e247, 0xbe057e4c)}},
+         {{TOBN(0x860136ad, 0x324fa34d), TOBN(0xea111447, 0x4cbeae28),
+           TOBN(0x023a4270, 0xbedd3299), TOBN(0x3d5c3a7f, 0xc1c35c34)},
+          {TOBN(0xb0f6db67, 0x8d0412d2), TOBN(0xd92625e2, 0xfcdc6b9a),
+           TOBN(0x92ae5ccc, 0x4e28a982), TOBN(0xea251c36, 0x47a3ce7e)}},
+         {{TOBN(0x9d658932, 0x790691bf), TOBN(0xed610589, 0x06b736ae),
+           TOBN(0x712c2f04, 0xc0d63b6e), TOBN(0x5cf06fd5, 0xc63d488f)},
+          {TOBN(0x97363fac, 0xd9588e41), TOBN(0x1f9bf762, 0x2b93257e),
+           TOBN(0xa9d1ffc4, 0x667acace), TOBN(0x1cf4a1aa, 0x0a061ecf)}},
+         {{TOBN(0x40e48a49, 0xdc1818d0), TOBN(0x0643ff39, 0xa3621ab0),
+           TOBN(0x5768640c, 0xe39ef639), TOBN(0x1fc099ea, 0x04d86854)},
+          {TOBN(0x9130b9c3, 0xeccd28fd), TOBN(0xd743cbd2, 0x7eec54ab),
+           TOBN(0x052b146f, 0xe5b475b6), TOBN(0x058d9a82, 0x900a7d1f)}},
+         {{TOBN(0x65e02292, 0x91262b72), TOBN(0x96f924f9, 0xbb0edf03),
+           TOBN(0x5cfa59c8, 0xfe206842), TOBN(0xf6037004, 0x5eafa720)},
+          {TOBN(0x5f30699e, 0x18d7dd96), TOBN(0x381e8782, 0xcbab2495),
+           TOBN(0x91669b46, 0xdd8be949), TOBN(0xb40606f5, 0x26aae8ef)}},
+         {{TOBN(0x2812b839, 0xfc6751a4), TOBN(0x16196214, 0xfba800ef),
+           TOBN(0x4398d5ca, 0x4c1a2875), TOBN(0x720c00ee, 0x653d8349)},
+          {TOBN(0xc2699eb0, 0xd820007c), TOBN(0x880ee660, 0xa39b5825),
+           TOBN(0x70694694, 0x471f6984), TOBN(0xf7d16ea8, 0xe3dda99a)}},
+         {{TOBN(0x28d675b2, 0xc0519a23), TOBN(0x9ebf94fe, 0x4f6952e3),
+           TOBN(0xf28bb767, 0xa2294a8a), TOBN(0x85512b4d, 0xfe0af3f5)},
+          {TOBN(0x18958ba8, 0x99b16a0d), TOBN(0x95c2430c, 0xba7548a7),
+           TOBN(0xb30d1b10, 0xa16be615), TOBN(0xe3ebbb97, 0x85bfb74c)}},
+         {{TOBN(0xa3273cfe, 0x18549fdb), TOBN(0xf6e200bf, 0x4fcdb792),
+           TOBN(0x54a76e18, 0x83aba56c), TOBN(0x73ec66f6, 0x89ef6aa2)},
+          {TOBN(0x8d17add7, 0xd1b9a305), TOBN(0xa959c5b9, 0xb7ae1b9d),
+           TOBN(0x88643522, 0x6bcc094a), TOBN(0xcc5616c4, 0xd7d429b9)}},
+         {{TOBN(0xa6dada01, 0xe6a33f7c), TOBN(0xc6217a07, 0x9d4e70ad),
+           TOBN(0xd619a818, 0x09c15b7c), TOBN(0xea06b329, 0x0e80c854)},
+          {TOBN(0x174811ce, 0xa5f5e7b9), TOBN(0x66dfc310, 0x787c65f4),
+           TOBN(0x4ea7bd69, 0x3316ab54), TOBN(0xc12c4acb, 0x1dcc0f70)}},
+         {{TOBN(0xe4308d1a, 0x1e407dd9), TOBN(0xe8a3587c, 0x91afa997),
+           TOBN(0xea296c12, 0xab77b7a5), TOBN(0xb5ad49e4, 0x673c0d52)},
+          {TOBN(0x40f9b2b2, 0x7006085a), TOBN(0xa88ff340, 0x87bf6ec2),
+           TOBN(0x978603b1, 0x4e3066a6), TOBN(0xb3f99fc2, 0xb5e486e2)}},
+         {{TOBN(0x07b53f5e, 0xb2e63645), TOBN(0xbe57e547, 0x84c84232),
+           TOBN(0xd779c216, 0x7214d5cf), TOBN(0x617969cd, 0x029a3aca)},
+          {TOBN(0xd17668cd, 0x8a7017a0), TOBN(0x77b4d19a, 0xbe9b7ee8),
+           TOBN(0x58fd0e93, 0x9c161776), TOBN(0xa8c4f4ef, 0xd5968a72)}},
+         {{TOBN(0x296071cc, 0x67b3de77), TOBN(0xae3c0b8e, 0x634f7905),
+           TOBN(0x67e440c2, 0x8a7100c9), TOBN(0xbb8c3c1b, 0xeb4b9b42)},
+          {TOBN(0x6d71e8ea, 0xc51b3583), TOBN(0x7591f5af, 0x9525e642),
+           TOBN(0xf73a2f7b, 0x13f509f3), TOBN(0x618487aa, 0x5619ac9b)}},
+         {{TOBN(0x3a72e5f7, 0x9d61718a), TOBN(0x00413bcc, 0x7592d28c),
+           TOBN(0x7d9b11d3, 0x963c35cf), TOBN(0x77623bcf, 0xb90a46ed)},
+          {TOBN(0xdeef273b, 0xdcdd2a50), TOBN(0x4a741f9b, 0x0601846e),
+           TOBN(0x33b89e51, 0x0ec6e929), TOBN(0xcb02319f, 0x8b7f22cd)}},
+         {{TOBN(0xbbe1500d, 0x084bae24), TOBN(0x2f0ae8d7, 0x343d2693),
+           TOBN(0xacffb5f2, 0x7cdef811), TOBN(0xaa0c030a, 0x263fb94f)},
+          {TOBN(0x6eef0d61, 0xa0f442de), TOBN(0xf92e1817, 0x27b139d3),
+           TOBN(0x1ae6deb7, 0x0ad8bc28), TOBN(0xa89e38dc, 0xc0514130)}},
+         {{TOBN(0x81eeb865, 0xd2fdca23), TOBN(0x5a15ee08, 0xcc8ef895),
+           TOBN(0x768fa10a, 0x01905614), TOBN(0xeff5b8ef, 0x880ee19b)},
+          {TOBN(0xf0c0cabb, 0xcb1c8a0e), TOBN(0x2e1ee9cd, 0xb8c838f9),
+           TOBN(0x0587d8b8, 0x8a4a14c0), TOBN(0xf6f27896, 0x2ff698e5)}},
+         {{TOBN(0xed38ef1c, 0x89ee6256), TOBN(0xf44ee1fe, 0x6b353b45),
+           TOBN(0x9115c0c7, 0x70e903b3), TOBN(0xc78ec0a1, 0x818f31df)},
+          {TOBN(0x6c003324, 0xb7dccbc6), TOBN(0xd96dd1f3, 0x163bbc25),
+           TOBN(0x33aa82dd, 0x5cedd805), TOBN(0x123aae4f, 0x7f7eb2f1)}},
+         {{TOBN(0x1723fcf5, 0xa26262cd), TOBN(0x1f7f4d5d, 0x0060ebd5),
+           TOBN(0xf19c5c01, 0xb2eaa3af), TOBN(0x2ccb9b14, 0x9790accf)},
+          {TOBN(0x1f9c1cad, 0x52324aa6), TOBN(0x63200526, 0x7247df54),
+           TOBN(0x5732fe42, 0xbac96f82), TOBN(0x52fe771f, 0x01a1c384)}},
+         {{TOBN(0x546ca13d, 0xb1001684), TOBN(0xb56b4eee, 0xa1709f75),
+           TOBN(0x266545a9, 0xd5db8672), TOBN(0xed971c90, 0x1e8f3cfb)},
+          {TOBN(0x4e7d8691, 0xe3a07b29), TOBN(0x7570d9ec, 0xe4b696b9),
+           TOBN(0xdc5fa067, 0x7bc7e9ae), TOBN(0x68b44caf, 0xc82c4844)}},
+         {{TOBN(0x519d34b3, 0xbf44da80), TOBN(0x283834f9, 0x5ab32e66),
+           TOBN(0x6e608797, 0x6278a000), TOBN(0x1e62960e, 0x627312f6)},
+          {TOBN(0x9b87b27b, 0xe6901c55), TOBN(0x80e78538, 0x24fdbc1f),
+           TOBN(0xbbbc0951, 0x2facc27d), TOBN(0x06394239, 0xac143b5a)}},
+         {{TOBN(0x35bb4a40, 0x376c1944), TOBN(0x7cb62694, 0x63da1511),
+           TOBN(0xafd29161, 0xb7148a3b), TOBN(0xa6f9d9ed, 0x4e2ea2ee)},
+          {TOBN(0x15dc2ca2, 0x880dd212), TOBN(0x903c3813, 0xa61139a9),
+           TOBN(0x2aa7b46d, 0x6c0f8785), TOBN(0x36ce2871, 0x901c60ff)}},
+         {{TOBN(0xc683b028, 0xe10d9c12), TOBN(0x7573baa2, 0x032f33d3),
+           TOBN(0x87a9b1f6, 0x67a31b58), TOBN(0xfd3ed11a, 0xf4ffae12)},
+          {TOBN(0x83dcaa9a, 0x0cb2748e), TOBN(0x8239f018, 0x5d6fdf16),
+           TOBN(0xba67b49c, 0x72753941), TOBN(0x2beec455, 0xc321cb36)}},
+         {{TOBN(0x88015606, 0x3f8b84ce), TOBN(0x76417083, 0x8d38c86f),
+           TOBN(0x054f1ca7, 0x598953dd), TOBN(0xc939e110, 0x4e8e7429)},
+          {TOBN(0x9b1ac2b3, 0x5a914f2f), TOBN(0x39e35ed3, 0xe74b8f9c),
+           TOBN(0xd0debdb2, 0x781b2fb0), TOBN(0x1585638f, 0x2d997ba2)}},
+         {{TOBN(0x9c4b646e, 0x9e2fce99), TOBN(0x68a21081, 0x1e80857f),
+           TOBN(0x06d54e44, 0x3643b52a), TOBN(0xde8d6d63, 0x0d8eb843)},
+          {TOBN(0x70321563, 0x42146a0a), TOBN(0x8ba826f2, 0x5eaa3622),
+           TOBN(0x227a58bd, 0x86138787), TOBN(0x43b6c03c, 0x10281d37)}},
+         {{TOBN(0x6326afbb, 0xb54dde39), TOBN(0x744e5e8a, 0xdb6f2d5f),
+           TOBN(0x48b2a99a, 0xcff158e1), TOBN(0xa93c8fa0, 0xef87918f)},
+          {TOBN(0x2182f956, 0xde058c5c), TOBN(0x216235d2, 0x936f9e7a),
+           TOBN(0xace0c0db, 0xd2e31e67), TOBN(0xc96449bf, 0xf23ac3e7)}},
+         {{TOBN(0x7e9a2874, 0x170693bd), TOBN(0xa28e14fd, 0xa45e6335),
+           TOBN(0x5757f6b3, 0x56427344), TOBN(0x822e4556, 0xacf8edf9)},
+          {TOBN(0x2b7a6ee2, 0xe6a285cd), TOBN(0x5866f211, 0xa9df3af0),
+           TOBN(0x40dde2dd, 0xf845b844), TOBN(0x986c3726, 0x110e5e49)}},
+         {{TOBN(0x73680c2a, 0xf7172277), TOBN(0x57b94f0f, 0x0cccb244),
+           TOBN(0xbdff7267, 0x2d438ca7), TOBN(0xbad1ce11, 0xcf4663fd)},
+          {TOBN(0x9813ed9d, 0xd8f71cae), TOBN(0xf43272a6, 0x961fdaa6),
+           TOBN(0xbeff0119, 0xbd6d1637), TOBN(0xfebc4f91, 0x30361978)}},
+         {{TOBN(0x02b37a95, 0x2f41deff), TOBN(0x0e44a59a, 0xe63b89b7),
+           TOBN(0x673257dc, 0x143ff951), TOBN(0x19c02205, 0xd752baf4)},
+          {TOBN(0x46c23069, 0xc4b7d692), TOBN(0x2e6392c3, 0xfd1502ac),
+           TOBN(0x6057b1a2, 0x1b220846), TOBN(0xe51ff946, 0x0c1b5b63)}}},
+        {{{TOBN(0x6e85cb51, 0x566c5c43), TOBN(0xcff9c919, 0x3597f046),
+           TOBN(0x9354e90c, 0x4994d94a), TOBN(0xe0a39332, 0x2147927d)},
+          {TOBN(0x8427fac1, 0x0dc1eb2b), TOBN(0x88cfd8c2, 0x2ff319fa),
+           TOBN(0xe2d4e684, 0x01965274), TOBN(0xfa2e067d, 0x67aaa746)}},
+         {{TOBN(0xb6d92a7f, 0x3e5f9f11), TOBN(0x9afe153a, 0xd6cb3b8e),
+           TOBN(0x4d1a6dd7, 0xddf800bd), TOBN(0xf6c13cc0, 0xcaf17e19)},
+          {TOBN(0x15f6c58e, 0x325fc3ee), TOBN(0x71095400, 0xa31dc3b2),
+           TOBN(0x168e7c07, 0xafa3d3e7), TOBN(0x3f8417a1, 0x94c7ae2d)}},
+         {{TOBN(0xec234772, 0x813b230d), TOBN(0x634d0f5f, 0x17344427),
+           TOBN(0x11548ab1, 0xd77fc56a), TOBN(0x7fab1750, 0xce06af77)},
+          {TOBN(0xb62c10a7, 0x4f7c4f83), TOBN(0xa7d2edc4, 0x220a67d9),
+           TOBN(0x1c404170, 0x921209a0), TOBN(0x0b9815a0, 0xface59f0)}},
+         {{TOBN(0x2842589b, 0x319540c3), TOBN(0x18490f59, 0xa283d6f8),
+           TOBN(0xa2731f84, 0xdaae9fcb), TOBN(0x3db6d960, 0xc3683ba0)},
+          {TOBN(0xc85c63bb, 0x14611069), TOBN(0xb19436af, 0x0788bf05),
+           TOBN(0x905459df, 0x347460d2), TOBN(0x73f6e094, 0xe11a7db1)}},
+         {{TOBN(0xdc7f938e, 0xb6357f37), TOBN(0xc5d00f79, 0x2bd8aa62),
+           TOBN(0xc878dcb9, 0x2ca979fc), TOBN(0x37e83ed9, 0xeb023a99)},
+          {TOBN(0x6b23e273, 0x1560bf3d), TOBN(0x1086e459, 0x1d0fae61),
+           TOBN(0x78248316, 0x9a9414bd), TOBN(0x1b956bc0, 0xf0ea9ea1)}},
+         {{TOBN(0x7b85bb91, 0xc31b9c38), TOBN(0x0c5aa90b, 0x48ef57b5),
+           TOBN(0xdedeb169, 0xaf3bab6f), TOBN(0xe610ad73, 0x2d373685)},
+          {TOBN(0xf13870df, 0x02ba8e15), TOBN(0x0337edb6, 0x8ca7f771),
+           TOBN(0xe4acf747, 0xb62c036c), TOBN(0xd921d576, 0xb6b94e81)}},
+         {{TOBN(0xdbc86439, 0x2c422f7a), TOBN(0xfb635362, 0xed348898),
+           TOBN(0x83084668, 0xc45bfcd1), TOBN(0xc357c9e3, 0x2b315e11)},
+          {TOBN(0xb173b540, 0x5b2e5b8c), TOBN(0x7e946931, 0xe102b9a4),
+           TOBN(0x17c890eb, 0x7b0fb199), TOBN(0xec225a83, 0xd61b662b)}},
+         {{TOBN(0xf306a3c8, 0xee3c76cb), TOBN(0x3cf11623, 0xd32a1f6e),
+           TOBN(0xe6d5ab64, 0x6863e956), TOBN(0x3b8a4cbe, 0x5c005c26)},
+          {TOBN(0xdcd529a5, 0x9ce6bb27), TOBN(0xc4afaa52, 0x04d4b16f),
+           TOBN(0xb0624a26, 0x7923798d), TOBN(0x85e56df6, 0x6b307fab)}},
+         {{TOBN(0x0281893c, 0x2bf29698), TOBN(0x91fc19a4, 0xd7ce7603),
+           TOBN(0x75a5dca3, 0xad9a558f), TOBN(0x40ceb3fa, 0x4d50bf77)},
+          {TOBN(0x1baf6060, 0xbc9ba369), TOBN(0x927e1037, 0x597888c2),
+           TOBN(0xd936bf19, 0x86a34c07), TOBN(0xd4cf10c1, 0xc34ae980)}},
+         {{TOBN(0x3a3e5334, 0x859dd614), TOBN(0x9c475b5b, 0x18d0c8ee),
+           TOBN(0x63080d1f, 0x07cd51d5), TOBN(0xc9c0d0a6, 0xb88b4326)},
+          {TOBN(0x1ac98691, 0xc234296f), TOBN(0x2a0a83a4, 0x94887fb6),
+           TOBN(0x56511427, 0x0cea9cf2), TOBN(0x5230a6e8, 0xa24802f5)}},
+         {{TOBN(0xf7a2bf0f, 0x72e3d5c1), TOBN(0x37717446, 0x4f21439e),
+           TOBN(0xfedcbf25, 0x9ce30334), TOBN(0xe0030a78, 0x7ce202f9)},
+          {TOBN(0x6f2d9ebf, 0x1202e9ca), TOBN(0xe79dde6c, 0x75e6e591),
+           TOBN(0xf52072af, 0xf1dac4f8), TOBN(0x6c8d087e, 0xbb9b404d)}},
+         {{TOBN(0xad0fc73d, 0xbce913af), TOBN(0x909e587b, 0x458a07cb),
+           TOBN(0x1300da84, 0xd4f00c8a), TOBN(0x425cd048, 0xb54466ac)},
+          {TOBN(0xb59cb9be, 0x90e9d8bf), TOBN(0x991616db, 0x3e431b0e),
+           TOBN(0xd3aa117a, 0x531aecff), TOBN(0x91af92d3, 0x59f4dc3b)}},
+         {{TOBN(0x9b1ec292, 0xe93fda29), TOBN(0x76bb6c17, 0xe97d91bc),
+           TOBN(0x7509d95f, 0xaface1e6), TOBN(0x3653fe47, 0xbe855ae3)},
+          {TOBN(0x73180b28, 0x0f680e75), TOBN(0x75eefd1b, 0xeeb6c26c),
+           TOBN(0xa4cdf29f, 0xb66d4236), TOBN(0x2d70a997, 0x6b5821d8)}},
+         {{TOBN(0x7a3ee207, 0x20445c36), TOBN(0x71d1ac82, 0x59877174),
+           TOBN(0x0fc539f7, 0x949f73e9), TOBN(0xd05cf3d7, 0x982e3081)},
+          {TOBN(0x8758e20b, 0x7b1c7129), TOBN(0xffadcc20, 0x569e61f2),
+           TOBN(0xb05d3a2f, 0x59544c2d), TOBN(0xbe16f5c1, 0x9fff5e53)}},
+         {{TOBN(0x73cf65b8, 0xaad58135), TOBN(0x622c2119, 0x037aa5be),
+           TOBN(0x79373b3f, 0x646fd6a0), TOBN(0x0e029db5, 0x0d3978cf)},
+          {TOBN(0x8bdfc437, 0x94fba037), TOBN(0xaefbd687, 0x620797a6),
+           TOBN(0x3fa5382b, 0xbd30d38e), TOBN(0x7627cfbf, 0x585d7464)}},
+         {{TOBN(0xb2330fef, 0x4e4ca463), TOBN(0xbcef7287, 0x3566cc63),
+           TOBN(0xd161d2ca, 0xcf780900), TOBN(0x135dc539, 0x5b54827d)},
+          {TOBN(0x638f052e, 0x27bf1bc6), TOBN(0x10a224f0, 0x07dfa06c),
+           TOBN(0xe973586d, 0x6d3321da), TOBN(0x8b0c5738, 0x26152c8f)}},
+         {{TOBN(0x07ef4f2a, 0x34606074), TOBN(0x80fe7fe8, 0xa0f7047a),
+           TOBN(0x3d1a8152, 0xe1a0e306), TOBN(0x32cf43d8, 0x88da5222)},
+          {TOBN(0xbf89a95f, 0x5f02ffe6), TOBN(0x3d9eb9a4, 0x806ad3ea),
+           TOBN(0x012c17bb, 0x79c8e55e), TOBN(0xfdcd1a74, 0x99c81dac)}},
+         {{TOBN(0x7043178b, 0xb9556098), TOBN(0x4090a1df, 0x801c3886),
+           TOBN(0x759800ff, 0x9b67b912), TOBN(0x3e5c0304, 0x232620c8)},
+          {TOBN(0x4b9d3c4b, 0x70dceeca), TOBN(0xbb2d3c15, 0x181f648e),
+           TOBN(0xf981d837, 0x6e33345c), TOBN(0xb626289b, 0x0cf2297a)}},
+         {{TOBN(0x766ac659, 0x8baebdcf), TOBN(0x1a28ae09, 0x75df01e5),
+           TOBN(0xb71283da, 0x375876d8), TOBN(0x4865a96d, 0x607b9800)},
+          {TOBN(0x25dd1bcd, 0x237936b2), TOBN(0x332f4f4b, 0x60417494),
+           TOBN(0xd0923d68, 0x370a2147), TOBN(0x497f5dfb, 0xdc842203)}},
+         {{TOBN(0x9dc74cbd, 0x32be5e0f), TOBN(0x7475bcb7, 0x17a01375),
+           TOBN(0x438477c9, 0x50d872b1), TOBN(0xcec67879, 0xffe1d63d)},
+          {TOBN(0x9b006014, 0xd8578c70), TOBN(0xc9ad99a8, 0x78bb6b8b),
+           TOBN(0x6799008e, 0x11fb3806), TOBN(0xcfe81435, 0xcd44cab3)}},
+         {{TOBN(0xa2ee1582, 0x2f4fb344), TOBN(0xb8823450, 0x483fa6eb),
+           TOBN(0x622d323d, 0x652c7749), TOBN(0xd8474a98, 0xbeb0a15b)},
+          {TOBN(0xe43c154d, 0x5d1c00d0), TOBN(0x7fd581d9, 0x0e3e7aac),
+           TOBN(0x2b44c619, 0x2525ddf8), TOBN(0x67a033eb, 0xb8ae9739)}},
+         {{TOBN(0x113ffec1, 0x9ef2d2e4), TOBN(0x1bf6767e, 0xd5a0ea7f),
+           TOBN(0x57fff75e, 0x03714c0a), TOBN(0xa23c422e, 0x0a23e9ee)},
+          {TOBN(0xdd5f6b2d, 0x540f83af), TOBN(0xc2c2c27e, 0x55ea46a7),
+           TOBN(0xeb6b4246, 0x672a1208), TOBN(0xd13599f7, 0xae634f7a)}},
+         {{TOBN(0xcf914b5c, 0xd7b32c6e), TOBN(0x61a5a640, 0xeaf61814),
+           TOBN(0x8dc3df8b, 0x208a1bbb), TOBN(0xef627fd6, 0xb6d79aa5)},
+          {TOBN(0x44232ffc, 0xc4c86bc8), TOBN(0xe6f9231b, 0x061539fe),
+           TOBN(0x1d04f25a, 0x958b9533), TOBN(0x180cf934, 0x49e8c885)}},
+         {{TOBN(0x89689595, 0x9884aaf7), TOBN(0xb1959be3, 0x07b348a6),
+           TOBN(0x96250e57, 0x3c147c87), TOBN(0xae0efb3a, 0xdd0c61f8)},
+          {TOBN(0xed00745e, 0xca8c325e), TOBN(0x3c911696, 0xecff3f70),
+           TOBN(0x73acbc65, 0x319ad41d), TOBN(0x7b01a020, 0xf0b1c7ef)}},
+         {{TOBN(0xea32b293, 0x63a1483f), TOBN(0x89eabe71, 0x7a248f96),
+           TOBN(0x9c6231d3, 0x343157e5), TOBN(0x93a375e5, 0xdf3c546d)},
+          {TOBN(0xe76e9343, 0x6a2afe69), TOBN(0xc4f89100, 0xe166c88e),
+           TOBN(0x248efd0d, 0x4f872093), TOBN(0xae0eb3ea, 0x8fe0ea61)}},
+         {{TOBN(0xaf89790d, 0x9d79046e), TOBN(0x4d650f2d, 0x6cee0976),
+           TOBN(0xa3935d9a, 0x43071eca), TOBN(0x66fcd2c9, 0x283b0bfe)},
+          {TOBN(0x0e665eb5, 0x696605f1), TOBN(0xe77e5d07, 0xa54cd38d),
+           TOBN(0x90ee050a, 0x43d950cf), TOBN(0x86ddebda, 0xd32e69b5)}},
+         {{TOBN(0x6ad94a3d, 0xfddf7415), TOBN(0xf7fa1309, 0x3f6e8d5a),
+           TOBN(0xc4831d1d, 0xe9957f75), TOBN(0x7de28501, 0xd5817447)},
+          {TOBN(0x6f1d7078, 0x9e2aeb6b), TOBN(0xba2b9ff4, 0xf67a53c2),
+           TOBN(0x36963767, 0xdf9defc3), TOBN(0x479deed3, 0x0d38022c)}},
+         {{TOBN(0xd2edb89b, 0x3a8631e8), TOBN(0x8de855de, 0x7a213746),
+           TOBN(0xb2056cb7, 0xb00c5f11), TOBN(0xdeaefbd0, 0x2c9b85e4)},
+          {TOBN(0x03f39a8d, 0xd150892d), TOBN(0x37b84686, 0x218b7985),
+           TOBN(0x36296dd8, 0xb7375f1a), TOBN(0x472cd4b1, 0xb78e898e)}},
+         {{TOBN(0x15dff651, 0xe9f05de9), TOBN(0xd4045069, 0x2ce98ba9),
+           TOBN(0x8466a7ae, 0x9b38024c), TOBN(0xb910e700, 0xe5a6b5ef)},
+          {TOBN(0xae1c56ea, 0xb3aa8f0d), TOBN(0xbab2a507, 0x7eee74a6),
+           TOBN(0x0dca11e2, 0x4b4c4620), TOBN(0xfd896e2e, 0x4c47d1f4)}},
+         {{TOBN(0xeb45ae53, 0x308fbd93), TOBN(0x46cd5a2e, 0x02c36fda),
+           TOBN(0x6a3d4e90, 0xbaa48385), TOBN(0xdd55e62e, 0x9dbe9960)},
+          {TOBN(0xa1406aa0, 0x2a81ede7), TOBN(0x6860dd14, 0xf9274ea7),
+           TOBN(0xcfdcb0c2, 0x80414f86), TOBN(0xff410b10, 0x22f94327)}},
+         {{TOBN(0x5a33cc38, 0x49ad467b), TOBN(0xefb48b6c, 0x0a7335f1),
+           TOBN(0x14fb54a4, 0xb153a360), TOBN(0x604aa9d2, 0xb52469cc)},
+          {TOBN(0x5e9dc486, 0x754e48e9), TOBN(0x693cb455, 0x37471e8e),
+           TOBN(0xfb2fd7cd, 0x8d3b37b6), TOBN(0x63345e16, 0xcf09ff07)}},
+         {{TOBN(0x9910ba6b, 0x23a5d896), TOBN(0x1fe19e35, 0x7fe4364e),
+           TOBN(0x6e1da8c3, 0x9a33c677), TOBN(0x15b4488b, 0x29fd9fd0)},
+          {TOBN(0x1f439254, 0x1a1f22bf), TOBN(0x920a8a70, 0xab8163e8),
+           TOBN(0x3fd1b249, 0x07e5658e), TOBN(0xf2c4f79c, 0xb6ec839b)}},
+         {{TOBN(0x1abbc3d0, 0x4aa38d1b), TOBN(0x3b0db35c, 0xb5d9510e),
+           TOBN(0x1754ac78, 0x3e60dec0), TOBN(0x53272fd7, 0xea099b33)},
+          {TOBN(0x5fb0494f, 0x07a8e107), TOBN(0x4a89e137, 0x6a8191fa),
+           TOBN(0xa113b7f6, 0x3c4ad544), TOBN(0x88a2e909, 0x6cb9897b)}},
+         {{TOBN(0x17d55de3, 0xb44a3f84), TOBN(0xacb2f344, 0x17c6c690),
+           TOBN(0x32088168, 0x10232390), TOBN(0xf2e8a61f, 0x6c733bf7)},
+          {TOBN(0xa774aab6, 0x9c2d7652), TOBN(0xfb5307e3, 0xed95c5bc),
+           TOBN(0xa05c73c2, 0x4981f110), TOBN(0x1baae31c, 0xa39458c9)}},
+         {{TOBN(0x1def185b, 0xcbea62e7), TOBN(0xe8ac9eae, 0xeaf63059),
+           TOBN(0x098a8cfd, 0x9921851c), TOBN(0xd959c3f1, 0x3abe2f5b)},
+          {TOBN(0xa4f19525, 0x20e40ae5), TOBN(0x320789e3, 0x07a24aa1),
+           TOBN(0x259e6927, 0x7392b2bc), TOBN(0x58f6c667, 0x1918668b)}},
+         {{TOBN(0xce1db2bb, 0xc55d2d8b), TOBN(0x41d58bb7, 0xf4f6ca56),
+           TOBN(0x7650b680, 0x8f877614), TOBN(0x905e16ba, 0xf4c349ed)},
+          {TOBN(0xed415140, 0xf661acac), TOBN(0x3b8784f0, 0xcb2270af),
+           TOBN(0x3bc280ac, 0x8a402cba), TOBN(0xd53f7146, 0x0937921a)}},
+         {{TOBN(0xc03c8ee5, 0xe5681e83), TOBN(0x62126105, 0xf6ac9e4a),
+           TOBN(0x9503a53f, 0x936b1a38), TOBN(0x3d45e2d4, 0x782fecbd)},
+          {TOBN(0x69a5c439, 0x76e8ae98), TOBN(0xb53b2eeb, 0xbfb4b00e),
+           TOBN(0xf1674712, 0x72386c89), TOBN(0x30ca34a2, 0x4268bce4)}},
+         {{TOBN(0x7f1ed86c, 0x78341730), TOBN(0x8ef5beb8, 0xb525e248),
+           TOBN(0xbbc489fd, 0xb74fbf38), TOBN(0x38a92a0e, 0x91a0b382)},
+          {TOBN(0x7a77ba3f, 0x22433ccf), TOBN(0xde8362d6, 0xa29f05a9),
+           TOBN(0x7f6a30ea, 0x61189afc), TOBN(0x693b5505, 0x59ef114f)}},
+         {{TOBN(0x50266bc0, 0xcd1797a1), TOBN(0xea17b47e, 0xf4b7af2d),
+           TOBN(0xd6c4025c, 0x3df9483e), TOBN(0x8cbb9d9f, 0xa37b18c9)},
+          {TOBN(0x91cbfd9c, 0x4d8424cf), TOBN(0xdb7048f1, 0xab1c3506),
+           TOBN(0x9eaf641f, 0x028206a3), TOBN(0xf986f3f9, 0x25bdf6ce)}},
+         {{TOBN(0x262143b5, 0x224c08dc), TOBN(0x2bbb09b4, 0x81b50c91),
+           TOBN(0xc16ed709, 0xaca8c84f), TOBN(0xa6210d9d, 0xb2850ca8)},
+          {TOBN(0x6d8df67a, 0x09cb54d6), TOBN(0x91eef6e0, 0x500919a4),
+           TOBN(0x90f61381, 0x0f132857), TOBN(0x9acede47, 0xf8d5028b)}},
+         {{TOBN(0x844d1b71, 0x90b771c3), TOBN(0x563b71e4, 0xba6426be),
+           TOBN(0x2efa2e83, 0xbdb802ff), TOBN(0x3410cbab, 0xab5b4a41)},
+          {TOBN(0x555b2d26, 0x30da84dd), TOBN(0xd0711ae9, 0xee1cc29a),
+           TOBN(0xcf3e8c60, 0x2f547792), TOBN(0x03d7d5de, 0xdc678b35)}},
+         {{TOBN(0x071a2fa8, 0xced806b8), TOBN(0x222e6134, 0x697f1478),
+           TOBN(0xdc16fd5d, 0xabfcdbbf), TOBN(0x44912ebf, 0x121b53b8)},
+          {TOBN(0xac943674, 0x2496c27c), TOBN(0x8ea3176c, 0x1ffc26b0),
+           TOBN(0xb6e224ac, 0x13debf2c), TOBN(0x524cc235, 0xf372a832)}},
+         {{TOBN(0xd706e1d8, 0x9f6f1b18), TOBN(0x2552f005, 0x44cce35b),
+           TOBN(0x8c8326c2, 0xa88e31fc), TOBN(0xb5468b2c, 0xf9552047)},
+          {TOBN(0xce683e88, 0x3ff90f2b), TOBN(0x77947bdf, 0x2f0a5423),
+           TOBN(0xd0a1b28b, 0xed56e328), TOBN(0xaee35253, 0xc20134ac)}},
+         {{TOBN(0x7e98367d, 0x3567962f), TOBN(0x379ed61f, 0x8188bffb),
+           TOBN(0x73bba348, 0xfaf130a1), TOBN(0x6c1f75e1, 0x904ed734)},
+          {TOBN(0x18956642, 0x3b4a79fc), TOBN(0xf20bc83d, 0x54ef4493),
+           TOBN(0x836d425d, 0x9111eca1), TOBN(0xe5b5c318, 0x009a8dcf)}},
+         {{TOBN(0x3360b25d, 0x13221bc5), TOBN(0x707baad2, 0x6b3eeaf7),
+           TOBN(0xd7279ed8, 0x743a95a1), TOBN(0x7450a875, 0x969e809f)},
+          {TOBN(0x32b6bd53, 0xe5d0338f), TOBN(0x1e77f7af, 0x2b883bbc),
+           TOBN(0x90da12cc, 0x1063ecd0), TOBN(0xe2697b58, 0xc315be47)}},
+         {{TOBN(0x2771a5bd, 0xda85d534), TOBN(0x53e78c1f, 0xff980eea),
+           TOBN(0xadf1cf84, 0x900385e7), TOBN(0x7d3b14f6, 0xc9387b62)},
+          {TOBN(0x170e74b0, 0xcb8f2bd2), TOBN(0x2d50b486, 0x827fa993),
+           TOBN(0xcdbe8c9a, 0xf6f32bab), TOBN(0x55e906b0, 0xc3b93ab8)}},
+         {{TOBN(0x747f22fc, 0x8fe280d1), TOBN(0xcd8e0de5, 0xb2e114ab),
+           TOBN(0x5ab7dbeb, 0xe10b68b0), TOBN(0x9dc63a9c, 0xa480d4b2)},
+          {TOBN(0x78d4bc3b, 0x4be1495f), TOBN(0x25eb3db8, 0x9359122d),
+           TOBN(0x3f8ac05b, 0x0809cbdc), TOBN(0xbf4187bb, 0xd37c702f)}},
+         {{TOBN(0x84cea069, 0x1416a6a5), TOBN(0x8f860c79, 0x43ef881c),
+           TOBN(0x41311f8a, 0x38038a5d), TOBN(0xe78c2ec0, 0xfc612067)},
+          {TOBN(0x494d2e81, 0x5ad73581), TOBN(0xb4cc9e00, 0x59604097),
+           TOBN(0xff558aec, 0xf3612cba), TOBN(0x35beef7a, 0x9e36c39e)}},
+         {{TOBN(0x1845c7cf, 0xdbcf41b9), TOBN(0x5703662a, 0xaea997c0),
+           TOBN(0x8b925afe, 0xe402f6d8), TOBN(0xd0a1b1ae, 0x4dd72162)},
+          {TOBN(0x9f47b375, 0x03c41c4b), TOBN(0xa023829b, 0x0391d042),
+           TOBN(0x5f5045c3, 0x503b8b0a), TOBN(0x123c2688, 0x98c010e5)}},
+         {{TOBN(0x324ec0cc, 0x36ba06ee), TOBN(0xface3115, 0x3dd2cc0c),
+           TOBN(0xb364f3be, 0xf333e91f), TOBN(0xef8aff73, 0x28e832b0)},
+          {TOBN(0x1e9bad04, 0x2d05841b), TOBN(0x42f0e3df, 0x356a21e2),
+           TOBN(0xa3270bcb, 0x4add627e), TOBN(0xb09a8158, 0xd322e711)}},
+         {{TOBN(0x86e326a1, 0x0fee104a), TOBN(0xad7788f8, 0x3703f65d),
+           TOBN(0x7e765430, 0x47bc4833), TOBN(0x6cee582b, 0x2b9b893a)},
+          {TOBN(0x9cd2a167, 0xe8f55a7b), TOBN(0xefbee3c6, 0xd9e4190d),
+           TOBN(0x33ee7185, 0xd40c2e9d), TOBN(0x844cc9c5, 0xa380b548)}},
+         {{TOBN(0x323f8ecd, 0x66926e04), TOBN(0x0001e38f, 0x8110c1ba),
+           TOBN(0x8dbcac12, 0xfc6a7f07), TOBN(0xd65e1d58, 0x0cec0827)},
+          {TOBN(0xd2cd4141, 0xbe76ca2d), TOBN(0x7895cf5c, 0xe892f33a),
+           TOBN(0x956d230d, 0x367139d2), TOBN(0xa91abd3e, 0xd012c4c1)}},
+         {{TOBN(0x34fa4883, 0x87eb36bf), TOBN(0xc5f07102, 0x914b8fb4),
+           TOBN(0x90f0e579, 0xadb9c95f), TOBN(0xfe6ea8cb, 0x28888195)},
+          {TOBN(0x7b9b5065, 0xedfa9284), TOBN(0x6c510bd2, 0x2b8c8d65),
+           TOBN(0xd7b8ebef, 0xcbe8aafd), TOBN(0xedb3af98, 0x96b1da07)}},
+         {{TOBN(0x28ff779d, 0x6295d426), TOBN(0x0c4f6ac7, 0x3fa3ad7b),
+           TOBN(0xec44d054, 0x8b8e2604), TOBN(0x9b32a66d, 0x8b0050e1)},
+          {TOBN(0x1f943366, 0xf0476ce2), TOBN(0x7554d953, 0xa602c7b4),
+           TOBN(0xbe35aca6, 0x524f2809), TOBN(0xb6881229, 0xfd4edbea)}},
+         {{TOBN(0xe8cd0c8f, 0x508efb63), TOBN(0x9eb5b5c8, 0x6abcefc7),
+           TOBN(0xf5621f5f, 0xb441ab4f), TOBN(0x79e6c046, 0xb76a2b22)},
+          {TOBN(0x74a4792c, 0xe37a1f69), TOBN(0xcbd252cb, 0x03542b60),
+           TOBN(0x785f65d5, 0xb3c20bd3), TOBN(0x8dea6143, 0x4fabc60c)}},
+         {{TOBN(0x45e21446, 0xde673629), TOBN(0x57f7aa1e, 0x703c2d21),
+           TOBN(0xa0e99b7f, 0x98c868c7), TOBN(0x4e42f66d, 0x8b641676)},
+          {TOBN(0x602884dc, 0x91077896), TOBN(0xa0d690cf, 0xc2c9885b),
+           TOBN(0xfeb4da33, 0x3b9a5187), TOBN(0x5f789598, 0x153c87ee)}},
+         {{TOBN(0x2192dd47, 0x52b16dba), TOBN(0xdeefc0e6, 0x3524c1b1),
+           TOBN(0x465ea76e, 0xe4383693), TOBN(0x79401711, 0x361b8d98)},
+          {TOBN(0xa5f9ace9, 0xf21a15cb), TOBN(0x73d26163, 0xefee9aeb),
+           TOBN(0xcca844b3, 0xe677016c), TOBN(0x6c122b07, 0x57eaee06)}},
+         {{TOBN(0xb782dce7, 0x15f09690), TOBN(0x508b9b12, 0x2dfc0fc9),
+           TOBN(0x9015ab4b, 0x65d89fc6), TOBN(0x5e79dab7, 0xd6d5bb0f)},
+          {TOBN(0x64f021f0, 0x6c775aa2), TOBN(0xdf09d8cc, 0x37c7eca1),
+           TOBN(0x9a761367, 0xef2fa506), TOBN(0xed4ca476, 0x5b81eec6)}},
+         {{TOBN(0x262ede36, 0x10bbb8b5), TOBN(0x0737ce83, 0x0641ada3),
+           TOBN(0x4c94288a, 0xe9831ccc), TOBN(0x487fc1ce, 0x8065e635)},
+          {TOBN(0xb13d7ab3, 0xb8bb3659), TOBN(0xdea5df3e, 0x855e4120),
+           TOBN(0xb9a18573, 0x85eb0244), TOBN(0x1a1b8ea3, 0xa7cfe0a3)}},
+         {{TOBN(0x3b837119, 0x67b0867c), TOBN(0x8d5e0d08, 0x9d364520),
+           TOBN(0x52dccc1e, 0xd930f0e3), TOBN(0xefbbcec7, 0xbf20bbaf)},
+          {TOBN(0x99cffcab, 0x0263ad10), TOBN(0xd8199e6d, 0xfcd18f8a),
+           TOBN(0x64e2773f, 0xe9f10617), TOBN(0x0079e8e1, 0x08704848)}},
+         {{TOBN(0x1169989f, 0x8a342283), TOBN(0x8097799c, 0xa83012e6),
+           TOBN(0xece966cb, 0x8a6a9001), TOBN(0x93b3afef, 0x072ac7fc)},
+          {TOBN(0xe6893a2a, 0x2db3d5ba), TOBN(0x263dc462, 0x89bf4fdc),
+           TOBN(0x8852dfc9, 0xe0396673), TOBN(0x7ac70895, 0x3af362b6)}},
+         {{TOBN(0xbb9cce4d, 0x5c2f342b), TOBN(0xbf80907a, 0xb52d7aae),
+           TOBN(0x97f3d3cd, 0x2161bcd0), TOBN(0xb25b0834, 0x0962744d)},
+          {TOBN(0xc5b18ea5, 0x6c3a1dda), TOBN(0xfe4ec7eb, 0x06c92317),
+           TOBN(0xb787b890, 0xad1c4afe), TOBN(0xdccd9a92, 0x0ede801a)}},
+         {{TOBN(0x9ac6ddda, 0xdb58da1f), TOBN(0x22bbc12f, 0xb8cae6ee),
+           TOBN(0xc6f8bced, 0x815c4a43), TOBN(0x8105a92c, 0xf96480c7)},
+          {TOBN(0x0dc3dbf3, 0x7a859d51), TOBN(0xe3ec7ce6, 0x3041196b),
+           TOBN(0xd9f64b25, 0x0d1067c9), TOBN(0xf2321321, 0x3d1f8dd8)}},
+         {{TOBN(0x8b5c619c, 0x76497ee8), TOBN(0x5d2b0ac6, 0xc717370e),
+           TOBN(0x98204cb6, 0x4fcf68e1), TOBN(0x0bdec211, 0x62bc6792)},
+          {TOBN(0x6973ccef, 0xa63b1011), TOBN(0xf9e3fa97, 0xe0de1ac5),
+           TOBN(0x5efb693e, 0x3d0e0c8b), TOBN(0x037248e9, 0xd2d4fcb4)}}},
+        {{{TOBN(0x80802dc9, 0x1ec34f9e), TOBN(0xd8772d35, 0x33810603),
+           TOBN(0x3f06d66c, 0x530cb4f3), TOBN(0x7be5ed0d, 0xc475c129)},
+          {TOBN(0xcb9e3c19, 0x31e82b10), TOBN(0xc63d2857, 0xc9ff6b4c),
+           TOBN(0xb92118c6, 0x92a1b45e), TOBN(0x0aec4414, 0x7285bbca)}},
+         {{TOBN(0xfc189ae7, 0x1e29a3ef), TOBN(0xcbe906f0, 0x4c93302e),
+           TOBN(0xd0107914, 0xceaae10e), TOBN(0xb7a23f34, 0xb68e19f8)},
+          {TOBN(0xe9d875c2, 0xefd2119d), TOBN(0x03198c6e, 0xfcadc9c8),
+           TOBN(0x65591bf6, 0x4da17113), TOBN(0x3cf0bbf8, 0x3d443038)}},
+         {{TOBN(0xae485bb7, 0x2b724759), TOBN(0x945353e1, 0xb2d4c63a),
+           TOBN(0x82159d07, 0xde7d6f2c), TOBN(0x389caef3, 0x4ec5b109)},
+          {TOBN(0x4a8ebb53, 0xdb65ef14), TOBN(0x2dc2cb7e, 0xdd99de43),
+           TOBN(0x816fa3ed, 0x83f2405f), TOBN(0x73429bb9, 0xc14208a3)}},
+         {{TOBN(0xb618d590, 0xb01e6e27), TOBN(0x047e2ccd, 0xe180b2dc),
+           TOBN(0xd1b299b5, 0x04aea4a9), TOBN(0x412c9e1e, 0x9fa403a4)},
+          {TOBN(0x88d28a36, 0x79407552), TOBN(0x49c50136, 0xf332b8e3),
+           TOBN(0x3a1b6fcc, 0xe668de19), TOBN(0x178851bc, 0x75122b97)}},
+         {{TOBN(0xb1e13752, 0xfb85fa4c), TOBN(0xd61257ce, 0x383c8ce9),
+           TOBN(0xd43da670, 0xd2f74dae), TOBN(0xa35aa23f, 0xbf846bbb)},
+          {TOBN(0x5e74235d, 0x4421fc83), TOBN(0xf6df8ee0, 0xc363473b),
+           TOBN(0x34d7f52a, 0x3c4aa158), TOBN(0x50d05aab, 0x9bc6d22e)}},
+         {{TOBN(0x8c56e735, 0xa64785f4), TOBN(0xbc56637b, 0x5f29cd07),
+           TOBN(0x53b2bb80, 0x3ee35067), TOBN(0x50235a0f, 0xdc919270)},
+          {TOBN(0x191ab6d8, 0xf2c4aa65), TOBN(0xc3475831, 0x8396023b),
+           TOBN(0x80400ba5, 0xf0f805ba), TOBN(0x8881065b, 0x5ec0f80f)}},
+         {{TOBN(0xc370e522, 0xcc1b5e83), TOBN(0xde2d4ad1, 0x860b8bfb),
+           TOBN(0xad364df0, 0x67b256df), TOBN(0x8f12502e, 0xe0138997)},
+          {TOBN(0x503fa0dc, 0x7783920a), TOBN(0xe80014ad, 0xc0bc866a),
+           TOBN(0x3f89b744, 0xd3064ba6), TOBN(0x03511dcd, 0xcba5dba5)}},
+         {{TOBN(0x197dd46d, 0x95a7b1a2), TOBN(0x9c4e7ad6, 0x3c6341fb),
+           TOBN(0x426eca29, 0x484c2ece), TOBN(0x9211e489, 0xde7f4f8a)},
+          {TOBN(0x14997f6e, 0xc78ef1f4), TOBN(0x2b2c0910, 0x06574586),
+           TOBN(0x17286a6e, 0x1c3eede8), TOBN(0x25f92e47, 0x0f60e018)}},
+         {{TOBN(0x805c5646, 0x31890a36), TOBN(0x703ef600, 0x57feea5b),
+           TOBN(0x389f747c, 0xaf3c3030), TOBN(0xe0e5daeb, 0x54dd3739)},
+          {TOBN(0xfe24a4c3, 0xc9c9f155), TOBN(0x7e4bf176, 0xb5393962),
+           TOBN(0x37183de2, 0xaf20bf29), TOBN(0x4a1bd7b5, 0xf95a8c3b)}},
+         {{TOBN(0xa83b9699, 0x46191d3d), TOBN(0x281fc8dd, 0x7b87f257),
+           TOBN(0xb18e2c13, 0x54107588), TOBN(0x6372def7, 0x9b2bafe8)},
+          {TOBN(0xdaf4bb48, 0x0d8972ca), TOBN(0x3f2dd4b7, 0x56167a3f),
+           TOBN(0x1eace32d, 0x84310cf4), TOBN(0xe3bcefaf, 0xe42700aa)}},
+         {{TOBN(0x5fe5691e, 0xd785e73d), TOBN(0xa5db5ab6, 0x2ea60467),
+           TOBN(0x02e23d41, 0xdfc6514a), TOBN(0x35e8048e, 0xe03c3665)},
+          {TOBN(0x3f8b118f, 0x1adaa0f8), TOBN(0x28ec3b45, 0x84ce1a5a),
+           TOBN(0xe8cacc6e, 0x2c6646b8), TOBN(0x1343d185, 0xdbd0e40f)}},
+         {{TOBN(0xe5d7f844, 0xcaaa358c), TOBN(0x1a1db7e4, 0x9924182a),
+           TOBN(0xd64cd42d, 0x9c875d9a), TOBN(0xb37b515f, 0x042eeec8)},
+          {TOBN(0x4d4dd409, 0x7b165fbe), TOBN(0xfc322ed9, 0xe206eff3),
+           TOBN(0x7dee4102, 0x59b7e17e), TOBN(0x55a481c0, 0x8236ca00)}},
+         {{TOBN(0x8c885312, 0xc23fc975), TOBN(0x15715806, 0x05d6297b),
+           TOBN(0xa078868e, 0xf78edd39), TOBN(0x956b31e0, 0x03c45e52)},
+          {TOBN(0x470275d5, 0xff7b33a6), TOBN(0xc8d5dc3a, 0x0c7e673f),
+           TOBN(0x419227b4, 0x7e2f2598), TOBN(0x8b37b634, 0x4c14a975)}},
+         {{TOBN(0xd0667ed6, 0x8b11888c), TOBN(0x5e0e8c3e, 0x803e25dc),
+           TOBN(0x34e5d0dc, 0xb987a24a), TOBN(0x9f40ac3b, 0xae920323)},
+          {TOBN(0x5463de95, 0x34e0f63a), TOBN(0xa128bf92, 0x6b6328f9),
+           TOBN(0x491ccd7c, 0xda64f1b7), TOBN(0x7ef1ec27, 0xc47bde35)}},
+         {{TOBN(0xa857240f, 0xa36a2737), TOBN(0x35dc1366, 0x63621bc1),
+           TOBN(0x7a3a6453, 0xd4fb6897), TOBN(0x80f1a439, 0xc929319d)},
+          {TOBN(0xfc18274b, 0xf8cb0ba0), TOBN(0xb0b53766, 0x8078c5eb),
+           TOBN(0xfb0d4924, 0x1e01d0ef), TOBN(0x50d7c67d, 0x372ab09c)}},
+         {{TOBN(0xb4e370af, 0x3aeac968), TOBN(0xe4f7fee9, 0xc4b63266),
+           TOBN(0xb4acd4c2, 0xe3ac5664), TOBN(0xf8910bd2, 0xceb38cbf)},
+          {TOBN(0x1c3ae50c, 0xc9c0726e), TOBN(0x15309569, 0xd97b40bf),
+           TOBN(0x70884b7f, 0xfd5a5a1b), TOBN(0x3890896a, 0xef8314cd)}},
+         {{TOBN(0x58e1515c, 0xa5618c93), TOBN(0xe665432b, 0x77d942d1),
+           TOBN(0xb32181bf, 0xb6f767a8), TOBN(0x753794e8, 0x3a604110)},
+          {TOBN(0x09afeb7c, 0xe8c0dbcc), TOBN(0x31e02613, 0x598673a3),
+           TOBN(0x5d98e557, 0x7d46db00), TOBN(0xfc21fb8c, 0x9d985b28)}},
+         {{TOBN(0xc9040116, 0xb0843e0b), TOBN(0x53b1b3a8, 0x69b04531),
+           TOBN(0xdd1649f0, 0x85d7d830), TOBN(0xbb3bcc87, 0xcb7427e8)},
+          {TOBN(0x77261100, 0xc93dce83), TOBN(0x7e79da61, 0xa1922a2a),
+           TOBN(0x587a2b02, 0xf3149ce8), TOBN(0x147e1384, 0xde92ec83)}},
+         {{TOBN(0x484c83d3, 0xaf077f30), TOBN(0xea78f844, 0x0658b53a),
+           TOBN(0x912076c2, 0x027aec53), TOBN(0xf34714e3, 0x93c8177d)},
+          {TOBN(0x37ef5d15, 0xc2376c84), TOBN(0x8315b659, 0x3d1aa783),
+           TOBN(0x3a75c484, 0xef852a90), TOBN(0x0ba0c58a, 0x16086bd4)}},
+         {{TOBN(0x29688d7a, 0x529a6d48), TOBN(0x9c7f250d, 0xc2f19203),
+           TOBN(0x123042fb, 0x682e2df9), TOBN(0x2b7587e7, 0xad8121bc)},
+          {TOBN(0x30fc0233, 0xe0182a65), TOBN(0xb82ecf87, 0xe3e1128a),
+           TOBN(0x71682861, 0x93fb098f), TOBN(0x043e21ae, 0x85e9e6a7)}},
+         {{TOBN(0xab5b49d6, 0x66c834ea), TOBN(0x3be43e18, 0x47414287),
+           TOBN(0xf40fb859, 0x219a2a47), TOBN(0x0e6559e9, 0xcc58df3c)},
+          {TOBN(0xfe1dfe8e, 0x0c6615b4), TOBN(0x14abc8fd, 0x56459d70),
+           TOBN(0x7be0fa8e, 0x05de0386), TOBN(0x8e63ef68, 0xe9035c7c)}},
+         {{TOBN(0x116401b4, 0x53b31e91), TOBN(0x0cba7ad4, 0x4436b4d8),
+           TOBN(0x9151f9a0, 0x107afd66), TOBN(0xafaca8d0, 0x1f0ee4c4)},
+          {TOBN(0x75fe5c1d, 0x9ee9761c), TOBN(0x3497a16b, 0xf0c0588f),
+           TOBN(0x3ee2bebd, 0x0304804c), TOBN(0xa8fb9a60, 0xc2c990b9)}},
+         {{TOBN(0xd14d32fe, 0x39251114), TOBN(0x36bf25bc, 0xcac73366),
+           TOBN(0xc9562c66, 0xdba7495c), TOBN(0x324d301b, 0x46ad348b)},
+          {TOBN(0x9f46620c, 0xd670407e), TOBN(0x0ea8d4f1, 0xe3733a01),
+           TOBN(0xd396d532, 0xb0c324e0), TOBN(0x5b211a0e, 0x03c317cd)}},
+         {{TOBN(0x090d7d20, 0x5ffe7b37), TOBN(0x3b7f3efb, 0x1747d2da),
+           TOBN(0xa2cb525f, 0xb54fc519), TOBN(0x6e220932, 0xf66a971e)},
+          {TOBN(0xddc160df, 0xb486d440), TOBN(0x7fcfec46, 0x3fe13465),
+           TOBN(0x83da7e4e, 0x76e4c151), TOBN(0xd6fa48a1, 0xd8d302b5)}},
+         {{TOBN(0xc6304f26, 0x5872cd88), TOBN(0x806c1d3c, 0x278b90a1),
+           TOBN(0x3553e725, 0xcaf0bc1c), TOBN(0xff59e603, 0xbb9d8d5c)},
+          {TOBN(0xa4550f32, 0x7a0b85dd), TOBN(0xdec5720a, 0x93ecc217),
+           TOBN(0x0b88b741, 0x69d62213), TOBN(0x7212f245, 0x5b365955)}},
+         {{TOBN(0x20764111, 0xb5cae787), TOBN(0x13cb7f58, 0x1dfd3124),
+           TOBN(0x2dca77da, 0x1175aefb), TOBN(0xeb75466b, 0xffaae775)},
+          {TOBN(0x74d76f3b, 0xdb6cff32), TOBN(0x7440f37a, 0x61fcda9a),
+           TOBN(0x1bb3ac92, 0xb525028b), TOBN(0x20fbf8f7, 0xa1975f29)}},
+         {{TOBN(0x982692e1, 0xdf83097f), TOBN(0x28738f6c, 0x554b0800),
+           TOBN(0xdc703717, 0xa2ce2f2f), TOBN(0x7913b93c, 0x40814194)},
+          {TOBN(0x04924593, 0x1fe89636), TOBN(0x7b98443f, 0xf78834a6),
+           TOBN(0x11c6ab01, 0x5114a5a1), TOBN(0x60deb383, 0xffba5f4c)}},
+         {{TOBN(0x4caa54c6, 0x01a982e6), TOBN(0x1dd35e11, 0x3491cd26),
+           TOBN(0x973c315f, 0x7cbd6b05), TOBN(0xcab00775, 0x52494724)},
+          {TOBN(0x04659b1f, 0x6565e15a), TOBN(0xbf30f529, 0x8c8fb026),
+           TOBN(0xfc21641b, 0xa8a0de37), TOBN(0xe9c7a366, 0xfa5e5114)}},
+         {{TOBN(0xdb849ca5, 0x52f03ad8), TOBN(0xc7e8dbe9, 0x024e35c0),
+           TOBN(0xa1a2bbac, 0xcfc3c789), TOBN(0xbf733e7d, 0x9c26f262)},
+          {TOBN(0x882ffbf5, 0xb8444823), TOBN(0xb7224e88, 0x6bf8483b),
+           TOBN(0x53023b8b, 0x65bef640), TOBN(0xaabfec91, 0xd4d5f8cd)}},
+         {{TOBN(0xa40e1510, 0x079ea1bd), TOBN(0x1ad9addc, 0xd05d5d26),
+           TOBN(0xdb3f2eab, 0x13e68d4f), TOBN(0x1cff1ae2, 0x640f803f)},
+          {TOBN(0xe0e7b749, 0xd4cee117), TOBN(0x8e9f275b, 0x4036d909),
+           TOBN(0xce34e31d, 0x8f4d4c38), TOBN(0x22b37f69, 0xd75130fc)}},
+         {{TOBN(0x83e0f1fd, 0xb4014604), TOBN(0xa8ce9919, 0x89415078),
+           TOBN(0x82375b75, 0x41792efe), TOBN(0x4f59bf5c, 0x97d4515b)},
+          {TOBN(0xac4f324f, 0x923a277d), TOBN(0xd9bc9b7d, 0x650f3406),
+           TOBN(0xc6fa87d1, 0x8a39bc51), TOBN(0x82588530, 0x5ccc108f)}},
+         {{TOBN(0x5ced3c9f, 0x82e4c634), TOBN(0x8efb8314, 0x3a4464f8),
+           TOBN(0xe706381b, 0x7a1dca25), TOBN(0x6cd15a3c, 0x5a2a412b)},
+          {TOBN(0x9347a8fd, 0xbfcd8fb5), TOBN(0x31db2eef, 0x6e54cd22),
+           TOBN(0xc4aeb11e, 0xf8d8932f), TOBN(0x11e7c1ed, 0x344411af)}},
+         {{TOBN(0x2653050c, 0xdc9a151e), TOBN(0x9edbfc08, 0x3bb0a859),
+           TOBN(0x926c81c7, 0xfd5691e7), TOBN(0x9c1b2342, 0x6f39019a)},
+          {TOBN(0x64a81c8b, 0x7f8474b9), TOBN(0x90657c07, 0x01761819),
+           TOBN(0x390b3331, 0x55e0375a), TOBN(0xc676c626, 0xb6ebc47d)}},
+         {{TOBN(0x51623247, 0xb7d6dee8), TOBN(0x0948d927, 0x79659313),
+           TOBN(0x99700161, 0xe9ab35ed), TOBN(0x06cc32b4, 0x8ddde408)},
+          {TOBN(0x6f2fd664, 0x061ef338), TOBN(0x1606fa02, 0xc202e9ed),
+           TOBN(0x55388bc1, 0x929ba99b), TOBN(0xc4428c5e, 0x1e81df69)}},
+         {{TOBN(0xce2028ae, 0xf91b0b2a), TOBN(0xce870a23, 0xf03dfd3f),
+           TOBN(0x66ec2c87, 0x0affe8ed), TOBN(0xb205fb46, 0x284d0c00)},
+          {TOBN(0xbf5dffe7, 0x44cefa48), TOBN(0xb6fc37a8, 0xa19876d7),
+           TOBN(0xbecfa84c, 0x08b72863), TOBN(0xd7205ff5, 0x2576374f)}},
+         {{TOBN(0x80330d32, 0x8887de41), TOBN(0x5de0df0c, 0x869ea534),
+           TOBN(0x13f42753, 0x3c56ea17), TOBN(0xeb1f6069, 0x452b1a78)},
+          {TOBN(0x50474396, 0xe30ea15c), TOBN(0x575816a1, 0xc1494125),
+           TOBN(0xbe1ce55b, 0xfe6bb38f), TOBN(0xb901a948, 0x96ae30f7)}},
+         {{TOBN(0xe5af0f08, 0xd8fc3548), TOBN(0x5010b5d0, 0xd73bfd08),
+           TOBN(0x993d2880, 0x53fe655a), TOBN(0x99f2630b, 0x1c1309fd)},
+          {TOBN(0xd8677baf, 0xb4e3b76f), TOBN(0x14e51ddc, 0xb840784b),
+           TOBN(0x326c750c, 0xbf0092ce), TOBN(0xc83d306b, 0xf528320f)}},
+         {{TOBN(0xc4456715, 0x77d4715c), TOBN(0xd30019f9, 0x6b703235),
+           TOBN(0x207ccb2e, 0xd669e986), TOBN(0x57c824af, 0xf6dbfc28)},
+          {TOBN(0xf0eb532f, 0xd8f92a23), TOBN(0x4a557fd4, 0x9bb98fd2),
+           TOBN(0xa57acea7, 0xc1e6199a), TOBN(0x0c663820, 0x8b94b1ed)}},
+         {{TOBN(0x9b42be8f, 0xf83a9266), TOBN(0xc7741c97, 0x0101bd45),
+           TOBN(0x95770c11, 0x07bd9ceb), TOBN(0x1f50250a, 0x8b2e0744)},
+          {TOBN(0xf762eec8, 0x1477b654), TOBN(0xc65b900e, 0x15efe59a),
+           TOBN(0x88c96148, 0x9546a897), TOBN(0x7e8025b3, 0xc30b4d7c)}},
+         {{TOBN(0xae4065ef, 0x12045cf9), TOBN(0x6fcb2caf, 0x9ccce8bd),
+           TOBN(0x1fa0ba4e, 0xf2cf6525), TOBN(0xf683125d, 0xcb72c312)},
+          {TOBN(0xa01da4ea, 0xe312410e), TOBN(0x67e28677, 0x6cd8e830),
+           TOBN(0xabd95752, 0x98fb3f07), TOBN(0x05f11e11, 0xeef649a5)}},
+         {{TOBN(0xba47faef, 0x9d3472c2), TOBN(0x3adff697, 0xc77d1345),
+           TOBN(0x4761fa04, 0xdd15afee), TOBN(0x64f1f61a, 0xb9e69462)},
+          {TOBN(0xfa691fab, 0x9bfb9093), TOBN(0x3df8ae8f, 0xa1133dfe),
+           TOBN(0xcd5f8967, 0x58cc710d), TOBN(0xfbb88d50, 0x16c7fe79)}},
+         {{TOBN(0x8e011b4c, 0xe88c50d1), TOBN(0x7532e807, 0xa8771c4f),
+           TOBN(0x64c78a48, 0xe2278ee4), TOBN(0x0b283e83, 0x3845072a)},
+          {TOBN(0x98a6f291, 0x49e69274), TOBN(0xb96e9668, 0x1868b21c),
+           TOBN(0x38f0adc2, 0xb1a8908e), TOBN(0x90afcff7, 0x1feb829d)}},
+         {{TOBN(0x9915a383, 0x210b0856), TOBN(0xa5a80602, 0xdef04889),
+           TOBN(0x800e9af9, 0x7c64d509), TOBN(0x81382d0b, 0xb8996f6f)},
+          {TOBN(0x490eba53, 0x81927e27), TOBN(0x46c63b32, 0x4af50182),
+           TOBN(0x784c5fd9, 0xd3ad62ce), TOBN(0xe4fa1870, 0xf8ae8736)}},
+         {{TOBN(0x4ec9d0bc, 0xd7466b25), TOBN(0x84ddbe1a, 0xdb235c65),
+           TOBN(0x5e2645ee, 0x163c1688), TOBN(0x570bd00e, 0x00eba747)},
+          {TOBN(0xfa51b629, 0x128bfa0f), TOBN(0x92fce1bd, 0x6c1d3b68),
+           TOBN(0x3e7361dc, 0xb66778b1), TOBN(0x9c7d249d, 0x5561d2bb)}},
+         {{TOBN(0xa40b28bf, 0x0bbc6229), TOBN(0x1c83c05e, 0xdfd91497),
+           TOBN(0x5f9f5154, 0xf083df05), TOBN(0xbac38b3c, 0xeee66c9d)},
+          {TOBN(0xf71db7e3, 0xec0dfcfd), TOBN(0xf2ecda8e, 0x8b0a8416),
+           TOBN(0x52fddd86, 0x7812aa66), TOBN(0x2896ef10, 0x4e6f4272)}},
+         {{TOBN(0xff27186a, 0x0fe9a745), TOBN(0x08249fcd, 0x49ca70db),
+           TOBN(0x7425a2e6, 0x441cac49), TOBN(0xf4a0885a, 0xece5ff57)},
+          {TOBN(0x6e2cb731, 0x7d7ead58), TOBN(0xf96cf7d6, 0x1898d104),
+           TOBN(0xafe67c9d, 0x4f2c9a89), TOBN(0x89895a50, 0x1c7bf5bc)}},
+         {{TOBN(0xdc7cb8e5, 0x573cecfa), TOBN(0x66497eae, 0xd15f03e6),
+           TOBN(0x6bc0de69, 0x3f084420), TOBN(0x323b9b36, 0xacd532b0)},
+          {TOBN(0xcfed390a, 0x0115a3c1), TOBN(0x9414c40b, 0x2d65ca0e),
+           TOBN(0x641406bd, 0x2f530c78), TOBN(0x29369a44, 0x833438f2)}},
+         {{TOBN(0x996884f5, 0x903fa271), TOBN(0xe6da0fd2, 0xb9da921e),
+           TOBN(0xa6f2f269, 0x5db01e54), TOBN(0x1ee3e9bd, 0x6876214e)},
+          {TOBN(0xa26e181c, 0xe27a9497), TOBN(0x36d254e4, 0x8e215e04),
+           TOBN(0x42f32a6c, 0x252cabca), TOBN(0x99481487, 0x80b57614)}},
+         {{TOBN(0x4c4dfe69, 0x40d9cae1), TOBN(0x05869580, 0x11a10f09),
+           TOBN(0xca287b57, 0x3491b64b), TOBN(0x77862d5d, 0x3fd4a53b)},
+          {TOBN(0xbf94856e, 0x50349126), TOBN(0x2be30bd1, 0x71c5268f),
+           TOBN(0x10393f19, 0xcbb650a6), TOBN(0x639531fe, 0x778cf9fd)}},
+         {{TOBN(0x02556a11, 0xb2935359), TOBN(0xda38aa96, 0xaf8c126e),
+           TOBN(0x47dbe6c2, 0x0960167f), TOBN(0x37bbabb6, 0x501901cd)},
+          {TOBN(0xb6e979e0, 0x2c947778), TOBN(0xd69a5175, 0x7a1a1dc6),
+           TOBN(0xc3ed5095, 0x9d9faf0c), TOBN(0x4dd9c096, 0x1d5fa5f0)}},
+         {{TOBN(0xa0c4304d, 0x64f16ea8), TOBN(0x8b1cac16, 0x7e718623),
+           TOBN(0x0b576546, 0x7c67f03e), TOBN(0x559cf5ad, 0xcbd88c01)},
+          {TOBN(0x074877bb, 0x0e2af19a), TOBN(0x1f717ec1, 0xa1228c92),
+           TOBN(0x70bcb800, 0x326e8920), TOBN(0xec6e2c5c, 0x4f312804)}},
+         {{TOBN(0x426aea7d, 0x3fca4752), TOBN(0xf12c0949, 0x2211f62a),
+           TOBN(0x24beecd8, 0x7be7b6b5), TOBN(0xb77eaf4c, 0x36d7a27d)},
+          {TOBN(0x154c2781, 0xfda78fd3), TOBN(0x848a83b0, 0x264eeabe),
+           TOBN(0x81287ef0, 0x4ffe2bc4), TOBN(0x7b6d88c6, 0xb6b6fc2a)}},
+         {{TOBN(0x805fb947, 0xce417d99), TOBN(0x4b93dcc3, 0x8b916cc4),
+           TOBN(0x72e65bb3, 0x21273323), TOBN(0xbcc1badd, 0x6ea9886e)},
+          {TOBN(0x0e223011, 0x4bc5ee85), TOBN(0xa561be74, 0xc18ee1e4),
+           TOBN(0x762fd2d4, 0xa6bcf1f1), TOBN(0x50e6a5a4, 0x95231489)}},
+         {{TOBN(0xca96001f, 0xa00b500b), TOBN(0x5c098cfc, 0x5d7dcdf5),
+           TOBN(0xa64e2d2e, 0x8c446a85), TOBN(0xbae9bcf1, 0x971f3c62)},
+          {TOBN(0x4ec22683, 0x8435a2c5), TOBN(0x8ceaed6c, 0x4bad4643),
+           TOBN(0xe9f8fb47, 0xccccf4e3), TOBN(0xbd4f3fa4, 0x1ce3b21e)}},
+         {{TOBN(0xd79fb110, 0xa3db3292), TOBN(0xe28a37da, 0xb536c66a),
+           TOBN(0x279ce87b, 0x8e49e6a9), TOBN(0x70ccfe8d, 0xfdcec8e3)},
+          {TOBN(0x2193e4e0, 0x3ba464b2), TOBN(0x0f39d60e, 0xaca9a398),
+           TOBN(0x7d7932af, 0xf82c12ab), TOBN(0xd8ff50ed, 0x91e7e0f7)}},
+         {{TOBN(0xea961058, 0xfa28a7e0), TOBN(0xc726cf25, 0x0bf5ec74),
+           TOBN(0xe74d55c8, 0xdb229666), TOBN(0x0bd9abbf, 0xa57f5799)},
+          {TOBN(0x7479ef07, 0x4dfc47b3), TOBN(0xd9c65fc3, 0x0c52f91d),
+           TOBN(0x8e0283fe, 0x36a8bde2), TOBN(0xa32a8b5e, 0x7d4b7280)}},
+         {{TOBN(0x6a677c61, 0x12e83233), TOBN(0x0fbb3512, 0xdcc9bf28),
+           TOBN(0x562e8ea5, 0x0d780f61), TOBN(0x0db8b22b, 0x1dc4e89c)},
+          {TOBN(0x0a6fd1fb, 0x89be0144), TOBN(0x8c77d246, 0xca57113b),
+           TOBN(0x4639075d, 0xff09c91c), TOBN(0x5b47b17f, 0x5060824c)}},
+         {{TOBN(0x58aea2b0, 0x16287b52), TOBN(0xa1343520, 0xd0cd8eb0),
+           TOBN(0x6148b4d0, 0xc5d58573), TOBN(0xdd2b6170, 0x291c68ae)},
+          {TOBN(0xa61b3929, 0x1da3b3b7), TOBN(0x5f946d79, 0x08c4ac10),
+           TOBN(0x4105d4a5, 0x7217d583), TOBN(0x5061da3d, 0x25e6de5e)}},
+         {{TOBN(0x3113940d, 0xec1b4991), TOBN(0xf12195e1, 0x36f485ae),
+           TOBN(0xa7507fb2, 0x731a2ee0), TOBN(0x95057a8e, 0x6e9e196e)},
+          {TOBN(0xa3c2c911, 0x2e130136), TOBN(0x97dfbb36, 0x33c60d15),
+           TOBN(0xcaf3c581, 0xb300ee2b), TOBN(0x77f25d90, 0xf4bac8b8)}},
+         {{TOBN(0xdb1c4f98, 0x6d840cd6), TOBN(0x471d62c0, 0xe634288c),
+           TOBN(0x8ec2f85e, 0xcec8a161), TOBN(0x41f37cbc, 0xfa6f4ae2)},
+          {TOBN(0x6793a20f, 0x4b709985), TOBN(0x7a7bd33b, 0xefa8985b),
+           TOBN(0x2c6a3fbd, 0x938e6446), TOBN(0x19042619, 0x2a8d47c1)}},
+         {{TOBN(0x16848667, 0xcc36975f), TOBN(0x02acf168, 0x9d5f1dfb),
+           TOBN(0x62d41ad4, 0x613baa94), TOBN(0xb56fbb92, 0x9f684670)},
+          {TOBN(0xce610d0d, 0xe9e40569), TOBN(0x7b99c65f, 0x35489fef),
+           TOBN(0x0c88ad1b, 0x3df18b97), TOBN(0x81b7d9be, 0x5d0e9edb)}},
+         {{TOBN(0xd85218c0, 0xc716cc0a), TOBN(0xf4b5ff90, 0x85691c49),
+           TOBN(0xa4fd666b, 0xce356ac6), TOBN(0x17c72895, 0x4b327a7a)},
+          {TOBN(0xf93d5085, 0xda6be7de), TOBN(0xff71530e, 0x3301d34e),
+           TOBN(0x4cd96442, 0xd8f448e8), TOBN(0x9283d331, 0x2ed18ffa)}},
+         {{TOBN(0x4d33dd99, 0x2a849870), TOBN(0xa716964b, 0x41576335),
+           TOBN(0xff5e3a9b, 0x179be0e5), TOBN(0x5b9d6b1b, 0x83b13632)},
+          {TOBN(0x3b8bd7d4, 0xa52f313b), TOBN(0xc9dd95a0, 0x637a4660),
+           TOBN(0x30035962, 0x0b3e218f), TOBN(0xce1481a3, 0xc7b28a3c)}},
+         {{TOBN(0xab41b43a, 0x43228d83), TOBN(0x24ae1c30, 0x4ad63f99),
+           TOBN(0x8e525f1a, 0x46a51229), TOBN(0x14af860f, 0xcd26d2b4)},
+          {TOBN(0xd6baef61, 0x3f714aa1), TOBN(0xf51865ad, 0xeb78795e),
+           TOBN(0xd3e21fce, 0xe6a9d694), TOBN(0x82ceb1dd, 0x8a37b527)}}}};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h.grpc_back
new file mode 100644
index 0000000..8246b11
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64-table.h.grpc_back	
@@ -0,0 +1,9501 @@
+/* Copyright (c) 2015, Intel Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This is the precomputed constant time access table for the code in
+// p256-x86_64.c, for the default generator. The table consists of 37
+// subtables, each subtable contains 64 affine points. The affine points are
+// encoded as eight uint64's, four for the x coordinate and four for the y.
+// Both values are in little-endian order. There are 37 tables because a
+// signed, 6-bit wNAF form of the scalar is used and ceil(256/(6 + 1)) = 37.
+// Within each table there are 64 values because the 6-bit wNAF value can take
+// 64 values, ignoring the sign bit, which is implemented by performing a
+// negation of the affine point when required. We would like to align it to 2MB
+// in order to increase the chances of using a large page but that appears to
+// lead to invalid ELF files being produced.
+
+// This file is generated by make_p256-x86_64-table.go.
+
+static const alignas(4096) PRECOMP256_ROW ecp_nistz256_precomputed[37] = {
+        {{{TOBN(0x79e730d4, 0x18a9143c), TOBN(0x75ba95fc, 0x5fedb601),
+           TOBN(0x79fb732b, 0x77622510), TOBN(0x18905f76, 0xa53755c6)},
+          {TOBN(0xddf25357, 0xce95560a), TOBN(0x8b4ab8e4, 0xba19e45c),
+           TOBN(0xd2e88688, 0xdd21f325), TOBN(0x8571ff18, 0x25885d85)}},
+         {{TOBN(0x850046d4, 0x10ddd64d), TOBN(0xaa6ae3c1, 0xa433827d),
+           TOBN(0x73220503, 0x8d1490d9), TOBN(0xf6bb32e4, 0x3dcf3a3b)},
+          {TOBN(0x2f3648d3, 0x61bee1a5), TOBN(0x152cd7cb, 0xeb236ff8),
+           TOBN(0x19a8fb0e, 0x92042dbe), TOBN(0x78c57751, 0x0a5b8a3b)}},
+         {{TOBN(0xffac3f90, 0x4eebc127), TOBN(0xb027f84a, 0x087d81fb),
+           TOBN(0x66ad77dd, 0x87cbbc98), TOBN(0x26936a3f, 0xb6ff747e)},
+          {TOBN(0xb04c5c1f, 0xc983a7eb), TOBN(0x583e47ad, 0x0861fe1a),
+           TOBN(0x78820831, 0x1a2ee98e), TOBN(0xd5f06a29, 0xe587cc07)}},
+         {{TOBN(0x74b0b50d, 0x46918dcc), TOBN(0x4650a6ed, 0xc623c173),
+           TOBN(0x0cdaacac, 0xe8100af2), TOBN(0x577362f5, 0x41b0176b)},
+          {TOBN(0x2d96f24c, 0xe4cbaba6), TOBN(0x17628471, 0xfad6f447),
+           TOBN(0x6b6c36de, 0xe5ddd22e), TOBN(0x84b14c39, 0x4c5ab863)}},
+         {{TOBN(0xbe1b8aae, 0xc45c61f5), TOBN(0x90ec649a, 0x94b9537d),
+           TOBN(0x941cb5aa, 0xd076c20c), TOBN(0xc9079605, 0x890523c8)},
+          {TOBN(0xeb309b4a, 0xe7ba4f10), TOBN(0x73c568ef, 0xe5eb882b),
+           TOBN(0x3540a987, 0x7e7a1f68), TOBN(0x73a076bb, 0x2dd1e916)}},
+         {{TOBN(0x40394737, 0x3e77664a), TOBN(0x55ae744f, 0x346cee3e),
+           TOBN(0xd50a961a, 0x5b17a3ad), TOBN(0x13074b59, 0x54213673)},
+          {TOBN(0x93d36220, 0xd377e44b), TOBN(0x299c2b53, 0xadff14b5),
+           TOBN(0xf424d44c, 0xef639f11), TOBN(0xa4c9916d, 0x4a07f75f)}},
+         {{TOBN(0x0746354e, 0xa0173b4f), TOBN(0x2bd20213, 0xd23c00f7),
+           TOBN(0xf43eaab5, 0x0c23bb08), TOBN(0x13ba5119, 0xc3123e03)},
+          {TOBN(0x2847d030, 0x3f5b9d4d), TOBN(0x6742f2f2, 0x5da67bdd),
+           TOBN(0xef933bdc, 0x77c94195), TOBN(0xeaedd915, 0x6e240867)}},
+         {{TOBN(0x27f14cd1, 0x9499a78f), TOBN(0x462ab5c5, 0x6f9b3455),
+           TOBN(0x8f90f02a, 0xf02cfc6b), TOBN(0xb763891e, 0xb265230d)},
+          {TOBN(0xf59da3a9, 0x532d4977), TOBN(0x21e3327d, 0xcf9eba15),
+           TOBN(0x123c7b84, 0xbe60bbf0), TOBN(0x56ec12f2, 0x7706df76)}},
+         {{TOBN(0x75c96e8f, 0x264e20e8), TOBN(0xabe6bfed, 0x59a7a841),
+           TOBN(0x2cc09c04, 0x44c8eb00), TOBN(0xe05b3080, 0xf0c4e16b)},
+          {TOBN(0x1eb7777a, 0xa45f3314), TOBN(0x56af7bed, 0xce5d45e3),
+           TOBN(0x2b6e019a, 0x88b12f1a), TOBN(0x086659cd, 0xfd835f9b)}},
+         {{TOBN(0x2c18dbd1, 0x9dc21ec8), TOBN(0x98f9868a, 0x0fcf8139),
+           TOBN(0x737d2cd6, 0x48250b49), TOBN(0xcc61c947, 0x24b3428f)},
+          {TOBN(0x0c2b4078, 0x80dd9e76), TOBN(0xc43a8991, 0x383fbe08),
+           TOBN(0x5f7d2d65, 0x779be5d2), TOBN(0x78719a54, 0xeb3b4ab5)}},
+         {{TOBN(0xea7d260a, 0x6245e404), TOBN(0x9de40795, 0x6e7fdfe0),
+           TOBN(0x1ff3a415, 0x8dac1ab5), TOBN(0x3e7090f1, 0x649c9073)},
+          {TOBN(0x1a768561, 0x2b944e88), TOBN(0x250f939e, 0xe57f61c8),
+           TOBN(0x0c0daa89, 0x1ead643d), TOBN(0x68930023, 0xe125b88e)}},
+         {{TOBN(0x04b71aa7, 0xd2697768), TOBN(0xabdedef5, 0xca345a33),
+           TOBN(0x2409d29d, 0xee37385e), TOBN(0x4ee1df77, 0xcb83e156)},
+          {TOBN(0x0cac12d9, 0x1cbb5b43), TOBN(0x170ed2f6, 0xca895637),
+           TOBN(0x28228cfa, 0x8ade6d66), TOBN(0x7ff57c95, 0x53238aca)}},
+         {{TOBN(0xccc42563, 0x4b2ed709), TOBN(0x0e356769, 0x856fd30d),
+           TOBN(0xbcbcd43f, 0x559e9811), TOBN(0x738477ac, 0x5395b759)},
+          {TOBN(0x35752b90, 0xc00ee17f), TOBN(0x68748390, 0x742ed2e3),
+           TOBN(0x7cd06422, 0xbd1f5bc1), TOBN(0xfbc08769, 0xc9e7b797)}},
+         {{TOBN(0xa242a35b, 0xb0cf664a), TOBN(0x126e48f7, 0x7f9707e3),
+           TOBN(0x1717bf54, 0xc6832660), TOBN(0xfaae7332, 0xfd12c72e)},
+          {TOBN(0x27b52db7, 0x995d586b), TOBN(0xbe29569e, 0x832237c2),
+           TOBN(0xe8e4193e, 0x2a65e7db), TOBN(0x152706dc, 0x2eaa1bbb)}},
+         {{TOBN(0x72bcd8b7, 0xbc60055b), TOBN(0x03cc23ee, 0x56e27e4b),
+           TOBN(0xee337424, 0xe4819370), TOBN(0xe2aa0e43, 0x0ad3da09)},
+          {TOBN(0x40b8524f, 0x6383c45d), TOBN(0xd7663554, 0x42a41b25),
+           TOBN(0x64efa6de, 0x778a4797), TOBN(0x2042170a, 0x7079adf4)}},
+         {{TOBN(0x808b0b65, 0x0bc6fb80), TOBN(0x5882e075, 0x3ffe2e6b),
+           TOBN(0xd5ef2f7c, 0x2c83f549), TOBN(0x54d63c80, 0x9103b723)},
+          {TOBN(0xf2f11bd6, 0x52a23f9b), TOBN(0x3670c319, 0x4b0b6587),
+           TOBN(0x55c4623b, 0xb1580e9e), TOBN(0x64edf7b2, 0x01efe220)}},
+         {{TOBN(0x97091dcb, 0xd53c5c9d), TOBN(0xf17624b6, 0xac0a177b),
+           TOBN(0xb0f13975, 0x2cfe2dff), TOBN(0xc1a35c0a, 0x6c7a574e)},
+          {TOBN(0x227d3146, 0x93e79987), TOBN(0x0575bf30, 0xe89cb80e),
+           TOBN(0x2f4e247f, 0x0d1883bb), TOBN(0xebd51226, 0x3274c3d0)}},
+         {{TOBN(0x5f3e51c8, 0x56ada97a), TOBN(0x4afc964d, 0x8f8b403e),
+           TOBN(0xa6f247ab, 0x412e2979), TOBN(0x675abd1b, 0x6f80ebda)},
+          {TOBN(0x66a2bd72, 0x5e485a1d), TOBN(0x4b2a5caf, 0x8f4f0b3c),
+           TOBN(0x2626927f, 0x1b847bba), TOBN(0x6c6fc7d9, 0x0502394d)}},
+         {{TOBN(0xfea912ba, 0xa5659ae8), TOBN(0x68363aba, 0x25e1a16e),
+           TOBN(0xb8842277, 0x752c41ac), TOBN(0xfe545c28, 0x2897c3fc)},
+          {TOBN(0x2d36e9e7, 0xdc4c696b), TOBN(0x5806244a, 0xfba977c5),
+           TOBN(0x85665e9b, 0xe39508c1), TOBN(0xf720ee25, 0x6d12597b)}},
+         {{TOBN(0x8a979129, 0xd2337a31), TOBN(0x5916868f, 0x0f862bdc),
+           TOBN(0x048099d9, 0x5dd283ba), TOBN(0xe2d1eeb6, 0xfe5bfb4e)},
+          {TOBN(0x82ef1c41, 0x7884005d), TOBN(0xa2d4ec17, 0xffffcbae),
+           TOBN(0x9161c53f, 0x8aa95e66), TOBN(0x5ee104e1, 0xc5fee0d0)}},
+         {{TOBN(0x562e4cec, 0xc135b208), TOBN(0x74e1b265, 0x4783f47d),
+           TOBN(0x6d2a506c, 0x5a3f3b30), TOBN(0xecead9f4, 0xc16762fc)},
+          {TOBN(0xf29dd4b2, 0xe286e5b9), TOBN(0x1b0fadc0, 0x83bb3c61),
+           TOBN(0x7a75023e, 0x7fac29a4), TOBN(0xc086d5f1, 0xc9477fa3)}},
+         {{TOBN(0x0fc61135, 0x2f6f3076), TOBN(0xc99ffa23, 0xe3912a9a),
+           TOBN(0x6a0b0685, 0xd2f8ba3d), TOBN(0xfdc777e8, 0xe93358a4)},
+          {TOBN(0x94a787bb, 0x35415f04), TOBN(0x640c2d6a, 0x4d23fea4),
+           TOBN(0x9de917da, 0x153a35b5), TOBN(0x793e8d07, 0x5d5cd074)}},
+         {{TOBN(0xf4f87653, 0x2de45068), TOBN(0x37c7a7e8, 0x9e2e1f6e),
+           TOBN(0xd0825fa2, 0xa3584069), TOBN(0xaf2cea7c, 0x1727bf42)},
+          {TOBN(0x0360a4fb, 0x9e4785a9), TOBN(0xe5fda49c, 0x27299f4a),
+           TOBN(0x48068e13, 0x71ac2f71), TOBN(0x83d0687b, 0x9077666f)}},
+         {{TOBN(0x6d3883b2, 0x15d02819), TOBN(0x6d0d7550, 0x40dd9a35),
+           TOBN(0x61d7cbf9, 0x1d2b469f), TOBN(0xf97b232f, 0x2efc3115)},
+          {TOBN(0xa551d750, 0xb24bcbc7), TOBN(0x11ea4949, 0x88a1e356),
+           TOBN(0x7669f031, 0x93cb7501), TOBN(0x595dc55e, 0xca737b8a)}},
+         {{TOBN(0xa4a319ac, 0xd837879f), TOBN(0x6fc1b49e, 0xed6b67b0),
+           TOBN(0xe3959933, 0x32f1f3af), TOBN(0x966742eb, 0x65432a2e)},
+          {TOBN(0x4b8dc9fe, 0xb4966228), TOBN(0x96cc6312, 0x43f43950),
+           TOBN(0x12068859, 0xc9b731ee), TOBN(0x7b948dc3, 0x56f79968)}},
+         {{TOBN(0x61e4ad32, 0xed1f8008), TOBN(0xe6c9267a, 0xd8b17538),
+           TOBN(0x1ac7c5eb, 0x857ff6fb), TOBN(0x994baaa8, 0x55f2fb10)},
+          {TOBN(0x84cf14e1, 0x1d248018), TOBN(0x5a39898b, 0x628ac508),
+           TOBN(0x14fde97b, 0x5fa944f5), TOBN(0xed178030, 0xd12e5ac7)}},
+         {{TOBN(0x042c2af4, 0x97e2feb4), TOBN(0xd36a42d7, 0xaebf7313),
+           TOBN(0x49d2c9eb, 0x084ffdd7), TOBN(0x9f8aa54b, 0x2ef7c76a)},
+          {TOBN(0x9200b7ba, 0x09895e70), TOBN(0x3bd0c66f, 0xddb7fb58),
+           TOBN(0x2d97d108, 0x78eb4cbb), TOBN(0x2d431068, 0xd84bde31)}},
+         {{TOBN(0x4b523eb7, 0x172ccd1f), TOBN(0x7323cb28, 0x30a6a892),
+           TOBN(0x97082ec0, 0xcfe153eb), TOBN(0xe97f6b6a, 0xf2aadb97)},
+          {TOBN(0x1d3d393e, 0xd1a83da1), TOBN(0xa6a7f9c7, 0x804b2a68),
+           TOBN(0x4a688b48, 0x2d0cb71e), TOBN(0xa9b4cc5f, 0x40585278)}},
+         {{TOBN(0x5e5db46a, 0xcb66e132), TOBN(0xf1be963a, 0x0d925880),
+           TOBN(0x944a7027, 0x0317b9e2), TOBN(0xe266f959, 0x48603d48)},
+          {TOBN(0x98db6673, 0x5c208899), TOBN(0x90472447, 0xa2fb18a3),
+           TOBN(0x8a966939, 0x777c619f), TOBN(0x3798142a, 0x2a3be21b)}},
+         {{TOBN(0xb4241cb1, 0x3298b343), TOBN(0xa3a14e49, 0xb44f65a1),
+           TOBN(0xc5f4d6cd, 0x3ac77acd), TOBN(0xd0288cb5, 0x52b6fc3c)},
+          {TOBN(0xd5cc8c2f, 0x1c040abc), TOBN(0xb675511e, 0x06bf9b4a),
+           TOBN(0xd667da37, 0x9b3aa441), TOBN(0x460d45ce, 0x51601f72)}},
+         {{TOBN(0xe2f73c69, 0x6755ff89), TOBN(0xdd3cf7e7, 0x473017e6),
+           TOBN(0x8ef5689d, 0x3cf7600d), TOBN(0x948dc4f8, 0xb1fc87b4)},
+          {TOBN(0xd9e9fe81, 0x4ea53299), TOBN(0x2d921ca2, 0x98eb6028),
+           TOBN(0xfaecedfd, 0x0c9803fc), TOBN(0xf38ae891, 0x4d7b4745)}},
+         {{TOBN(0xd8c5fccf, 0xc5e3a3d8), TOBN(0xbefd904c, 0x4079dfbf),
+           TOBN(0xbc6d6a58, 0xfead0197), TOBN(0x39227077, 0x695532a4)},
+          {TOBN(0x09e23e6d, 0xdbef42f5), TOBN(0x7e449b64, 0x480a9908),
+           TOBN(0x7b969c1a, 0xad9a2e40), TOBN(0x6231d792, 0x9591c2a4)}},
+         {{TOBN(0x87151456, 0x0f664534), TOBN(0x85ceae7c, 0x4b68f103),
+           TOBN(0xac09c4ae, 0x65578ab9), TOBN(0x33ec6868, 0xf044b10c)},
+          {TOBN(0x6ac4832b, 0x3a8ec1f1), TOBN(0x5509d128, 0x5847d5ef),
+           TOBN(0xf909604f, 0x763f1574), TOBN(0xb16c4303, 0xc32f63c4)}},
+         {{TOBN(0xb6ab2014, 0x7ca23cd3), TOBN(0xcaa7a5c6, 0xa391849d),
+           TOBN(0x5b0673a3, 0x75678d94), TOBN(0xc982ddd4, 0xdd303e64)},
+          {TOBN(0xfd7b000b, 0x5db6f971), TOBN(0xbba2cb1f, 0x6f876f92),
+           TOBN(0xc77332a3, 0x3c569426), TOBN(0xa159100c, 0x570d74f8)}},
+         {{TOBN(0xfd16847f, 0xdec67ef5), TOBN(0x742ee464, 0x233e76b7),
+           TOBN(0x0b8e4134, 0xefc2b4c8), TOBN(0xca640b86, 0x42a3e521)},
+          {TOBN(0x653a0190, 0x8ceb6aa9), TOBN(0x313c300c, 0x547852d5),
+           TOBN(0x24e4ab12, 0x6b237af7), TOBN(0x2ba90162, 0x8bb47af8)}},
+         {{TOBN(0x3d5e58d6, 0xa8219bb7), TOBN(0xc691d0bd, 0x1b06c57f),
+           TOBN(0x0ae4cb10, 0xd257576e), TOBN(0x3569656c, 0xd54a3dc3)},
+          {TOBN(0xe5ebaebd, 0x94cda03a), TOBN(0x934e82d3, 0x162bfe13),
+           TOBN(0x450ac0ba, 0xe251a0c6), TOBN(0x480b9e11, 0xdd6da526)}},
+         {{TOBN(0x00467bc5, 0x8cce08b5), TOBN(0xb636458c, 0x7f178d55),
+           TOBN(0xc5748bae, 0xa677d806), TOBN(0x2763a387, 0xdfa394eb)},
+          {TOBN(0xa12b448a, 0x7d3cebb6), TOBN(0xe7adda3e, 0x6f20d850),
+           TOBN(0xf63ebce5, 0x1558462c), TOBN(0x58b36143, 0x620088a8)}},
+         {{TOBN(0x8a2cc3ca, 0x4d63c0ee), TOBN(0x51233117, 0x0fe948ce),
+           TOBN(0x7463fd85, 0x222ef33b), TOBN(0xadf0c7dc, 0x7c603d6c)},
+          {TOBN(0x0ec32d3b, 0xfe7765e5), TOBN(0xccaab359, 0xbf380409),
+           TOBN(0xbdaa84d6, 0x8e59319c), TOBN(0xd9a4c280, 0x9c80c34d)}},
+         {{TOBN(0xa9d89488, 0xa059c142), TOBN(0x6f5ae714, 0xff0b9346),
+           TOBN(0x068f237d, 0x16fb3664), TOBN(0x5853e4c4, 0x363186ac)},
+          {TOBN(0xe2d87d23, 0x63c52f98), TOBN(0x2ec4a766, 0x81828876),
+           TOBN(0x47b864fa, 0xe14e7b1c), TOBN(0x0c0bc0e5, 0x69192408)}},
+         {{TOBN(0xe4d7681d, 0xb82e9f3e), TOBN(0x83200f0b, 0xdf25e13c),
+           TOBN(0x8909984c, 0x66f27280), TOBN(0x462d7b00, 0x75f73227)},
+          {TOBN(0xd90ba188, 0xf2651798), TOBN(0x74c6e18c, 0x36ab1c34),
+           TOBN(0xab256ea3, 0x5ef54359), TOBN(0x03466612, 0xd1aa702f)}},
+         {{TOBN(0x624d6049, 0x2ed22e91), TOBN(0x6fdfe0b5, 0x6f072822),
+           TOBN(0xeeca1115, 0x39ce2271), TOBN(0x98100a4f, 0xdb01614f)},
+          {TOBN(0xb6b0daa2, 0xa35c628f), TOBN(0xb6f94d2e, 0xc87e9a47),
+           TOBN(0xc6773259, 0x1d57d9ce), TOBN(0xf70bfeec, 0x03884a7b)}},
+         {{TOBN(0x5fb35ccf, 0xed2bad01), TOBN(0xa155cbe3, 0x1da6a5c7),
+           TOBN(0xc2e2594c, 0x30a92f8f), TOBN(0x649c89ce, 0x5bfafe43)},
+          {TOBN(0xd158667d, 0xe9ff257a), TOBN(0x9b359611, 0xf32c50ae),
+           TOBN(0x4b00b20b, 0x906014cf), TOBN(0xf3a8cfe3, 0x89bc7d3d)}},
+         {{TOBN(0x4ff23ffd, 0x248a7d06), TOBN(0x80c5bfb4, 0x878873fa),
+           TOBN(0xb7d9ad90, 0x05745981), TOBN(0x179c85db, 0x3db01994)},
+          {TOBN(0xba41b062, 0x61a6966c), TOBN(0x4d82d052, 0xeadce5a8),
+           TOBN(0x9e91cd3b, 0xa5e6a318), TOBN(0x47795f4f, 0x95b2dda0)}},
+         {{TOBN(0xecfd7c1f, 0xd55a897c), TOBN(0x009194ab, 0xb29110fb),
+           TOBN(0x5f0e2046, 0xe381d3b0), TOBN(0x5f3425f6, 0xa98dd291)},
+          {TOBN(0xbfa06687, 0x730d50da), TOBN(0x0423446c, 0x4b083b7f),
+           TOBN(0x397a247d, 0xd69d3417), TOBN(0xeb629f90, 0x387ba42a)}},
+         {{TOBN(0x1ee426cc, 0xd5cd79bf), TOBN(0x0032940b, 0x946c6e18),
+           TOBN(0x1b1e8ae0, 0x57477f58), TOBN(0xe94f7d34, 0x6d823278)},
+          {TOBN(0xc747cb96, 0x782ba21a), TOBN(0xc5254469, 0xf72b33a5),
+           TOBN(0x772ef6de, 0xc7f80c81), TOBN(0xd73acbfe, 0x2cd9e6b5)}},
+         {{TOBN(0x4075b5b1, 0x49ee90d9), TOBN(0x785c339a, 0xa06e9eba),
+           TOBN(0xa1030d5b, 0xabf825e0), TOBN(0xcec684c3, 0xa42931dc)},
+          {TOBN(0x42ab62c9, 0xc1586e63), TOBN(0x45431d66, 0x5ab43f2b),
+           TOBN(0x57c8b2c0, 0x55f7835d), TOBN(0x033da338, 0xc1b7f865)}},
+         {{TOBN(0x283c7513, 0xcaa76097), TOBN(0x0a624fa9, 0x36c83906),
+           TOBN(0x6b20afec, 0x715af2c7), TOBN(0x4b969974, 0xeba78bfd)},
+          {TOBN(0x220755cc, 0xd921d60e), TOBN(0x9b944e10, 0x7baeca13),
+           TOBN(0x04819d51, 0x5ded93d4), TOBN(0x9bbff86e, 0x6dddfd27)}},
+         {{TOBN(0x6b344130, 0x77adc612), TOBN(0xa7496529, 0xbbd803a0),
+           TOBN(0x1a1baaa7, 0x6d8805bd), TOBN(0xc8403902, 0x470343ad)},
+          {TOBN(0x39f59f66, 0x175adff1), TOBN(0x0b26d7fb, 0xb7d8c5b7),
+           TOBN(0xa875f5ce, 0x529d75e3), TOBN(0x85efc7e9, 0x41325cc2)}},
+         {{TOBN(0x21950b42, 0x1ff6acd3), TOBN(0xffe70484, 0x53dc6909),
+           TOBN(0xff4cd0b2, 0x28766127), TOBN(0xabdbe608, 0x4fb7db2b)},
+          {TOBN(0x837c9228, 0x5e1109e8), TOBN(0x26147d27, 0xf4645b5a),
+           TOBN(0x4d78f592, 0xf7818ed8), TOBN(0xd394077e, 0xf247fa36)}},
+         {{TOBN(0x0fb9c2d0, 0x488c171a), TOBN(0xa78bfbaa, 0x13685278),
+           TOBN(0xedfbe268, 0xd5b1fa6a), TOBN(0x0dceb8db, 0x2b7eaba7)},
+          {TOBN(0xbf9e8089, 0x9ae2b710), TOBN(0xefde7ae6, 0xa4449c96),
+           TOBN(0x43b7716b, 0xcc143a46), TOBN(0xd7d34194, 0xc3628c13)}},
+         {{TOBN(0x508cec1c, 0x3b3f64c9), TOBN(0xe20bc0ba, 0x1e5edf3f),
+           TOBN(0xda1deb85, 0x2f4318d4), TOBN(0xd20ebe0d, 0x5c3fa443)},
+          {TOBN(0x370b4ea7, 0x73241ea3), TOBN(0x61f1511c, 0x5e1a5f65),
+           TOBN(0x99a5e23d, 0x82681c62), TOBN(0xd731e383, 0xa2f54c2d)}},
+         {{TOBN(0x2692f36e, 0x83445904), TOBN(0x2e0ec469, 0xaf45f9c0),
+           TOBN(0x905a3201, 0xc67528b7), TOBN(0x88f77f34, 0xd0e5e542)},
+          {TOBN(0xf67a8d29, 0x5864687c), TOBN(0x23b92eae, 0x22df3562),
+           TOBN(0x5c27014b, 0x9bbec39e), TOBN(0x7ef2f226, 0x9c0f0f8d)}},
+         {{TOBN(0x97359638, 0x546c4d8d), TOBN(0x5f9c3fc4, 0x92f24679),
+           TOBN(0x912e8bed, 0xa8c8acd9), TOBN(0xec3a318d, 0x306634b0)},
+          {TOBN(0x80167f41, 0xc31cb264), TOBN(0x3db82f6f, 0x522113f2),
+           TOBN(0xb155bcd2, 0xdcafe197), TOBN(0xfba1da59, 0x43465283)}},
+         {{TOBN(0xa0425b8e, 0xb212cf53), TOBN(0x4f2e512e, 0xf8557c5f),
+           TOBN(0xc1286ff9, 0x25c4d56c), TOBN(0xbb8a0fea, 0xee26c851)},
+          {TOBN(0xc28f70d2, 0xe7d6107e), TOBN(0x7ee0c444, 0xe76265aa),
+           TOBN(0x3df277a4, 0x1d1936b1), TOBN(0x1a556e3f, 0xea9595eb)}},
+         {{TOBN(0x258bbbf9, 0xe7305683), TOBN(0x31eea5bf, 0x07ef5be6),
+           TOBN(0x0deb0e4a, 0x46c814c1), TOBN(0x5cee8449, 0xa7b730dd)},
+          {TOBN(0xeab495c5, 0xa0182bde), TOBN(0xee759f87, 0x9e27a6b4),
+           TOBN(0xc2cf6a68, 0x80e518ca), TOBN(0x25e8013f, 0xf14cf3f4)}},
+         {{TOBN(0x8fc44140, 0x7e8d7a14), TOBN(0xbb1ff3ca, 0x9556f36a),
+           TOBN(0x6a844385, 0x14600044), TOBN(0xba3f0c4a, 0x7451ae63)},
+          {TOBN(0xdfcac25b, 0x1f9af32a), TOBN(0x01e0db86, 0xb1f2214b),
+           TOBN(0x4e9a5bc2, 0xa4b596ac), TOBN(0x83927681, 0x026c2c08)}},
+         {{TOBN(0x3ec832e7, 0x7acaca28), TOBN(0x1bfeea57, 0xc7385b29),
+           TOBN(0x068212e3, 0xfd1eaf38), TOBN(0xc1329830, 0x6acf8ccc)},
+          {TOBN(0xb909f2db, 0x2aac9e59), TOBN(0x5748060d, 0xb661782a),
+           TOBN(0xc5ab2632, 0xc79b7a01), TOBN(0xda44c6c6, 0x00017626)}},
+         {{TOBN(0xf26c00e8, 0xa7ea82f0), TOBN(0x99cac80d, 0xe4299aaf),
+           TOBN(0xd66fe3b6, 0x7ed78be1), TOBN(0x305f725f, 0x648d02cd)},
+          {TOBN(0x33ed1bc4, 0x623fb21b), TOBN(0xfa70533e, 0x7a6319ad),
+           TOBN(0x17ab562d, 0xbe5ffb3e), TOBN(0x06374994, 0x56674741)}},
+         {{TOBN(0x69d44ed6, 0x5c46aa8e), TOBN(0x2100d5d3, 0xa8d063d1),
+           TOBN(0xcb9727ea, 0xa2d17c36), TOBN(0x4c2bab1b, 0x8add53b7)},
+          {TOBN(0xa084e90c, 0x15426704), TOBN(0x778afcd3, 0xa837ebea),
+           TOBN(0x6651f701, 0x7ce477f8), TOBN(0xa0624998, 0x46fb7a8b)}},
+         {{TOBN(0xdc1e6828, 0xed8a6e19), TOBN(0x33fc2336, 0x4189d9c7),
+           TOBN(0x026f8fe2, 0x671c39bc), TOBN(0xd40c4ccd, 0xbc6f9915)},
+          {TOBN(0xafa135bb, 0xf80e75ca), TOBN(0x12c651a0, 0x22adff2c),
+           TOBN(0xc40a04bd, 0x4f51ad96), TOBN(0x04820109, 0xbbe4e832)}},
+         {{TOBN(0x3667eb1a, 0x7f4c04cc), TOBN(0x59556621, 0xa9404f84),
+           TOBN(0x71cdf653, 0x7eceb50a), TOBN(0x994a44a6, 0x9b8335fa)},
+          {TOBN(0xd7faf819, 0xdbeb9b69), TOBN(0x473c5680, 0xeed4350d),
+           TOBN(0xb6658466, 0xda44bba2), TOBN(0x0d1bc780, 0x872bdbf3)}},
+         {{TOBN(0xe535f175, 0xa1962f91), TOBN(0x6ed7e061, 0xed58f5a7),
+           TOBN(0x177aa4c0, 0x2089a233), TOBN(0x0dbcb03a, 0xe539b413)},
+          {TOBN(0xe3dc424e, 0xbb32e38e), TOBN(0x6472e5ef, 0x6806701e),
+           TOBN(0xdd47ff98, 0x814be9ee), TOBN(0x6b60cfff, 0x35ace009)}},
+         {{TOBN(0xb8d3d931, 0x9ff91fe5), TOBN(0x039c4800, 0xf0518eed),
+           TOBN(0x95c37632, 0x9182cb26), TOBN(0x0763a434, 0x82fc568d)},
+          {TOBN(0x707c04d5, 0x383e76ba), TOBN(0xac98b930, 0x824e8197),
+           TOBN(0x92bf7c8f, 0x91230de0), TOBN(0x90876a01, 0x40959b70)}},
+         {{TOBN(0xdb6d96f3, 0x05968b80), TOBN(0x380a0913, 0x089f73b9),
+           TOBN(0x7da70b83, 0xc2c61e01), TOBN(0x95fb8394, 0x569b38c7)},
+          {TOBN(0x9a3c6512, 0x80edfe2f), TOBN(0x8f726bb9, 0x8faeaf82),
+           TOBN(0x8010a4a0, 0x78424bf8), TOBN(0x29672044, 0x0e844970)}}},
+        {{{TOBN(0x63c5cb81, 0x7a2ad62a), TOBN(0x7ef2b6b9, 0xac62ff54),
+           TOBN(0x3749bba4, 0xb3ad9db5), TOBN(0xad311f2c, 0x46d5a617)},
+          {TOBN(0xb77a8087, 0xc2ff3b6d), TOBN(0xb46feaf3, 0x367834ff),
+           TOBN(0xf8aa266d, 0x75d6b138), TOBN(0xfa38d320, 0xec008188)}},
+         {{TOBN(0x486d8ffa, 0x696946fc), TOBN(0x50fbc6d8, 0xb9cba56d),
+           TOBN(0x7e3d423e, 0x90f35a15), TOBN(0x7c3da195, 0xc0dd962c)},
+          {TOBN(0xe673fdb0, 0x3cfd5d8b), TOBN(0x0704b7c2, 0x889dfca5),
+           TOBN(0xf6ce581f, 0xf52305aa), TOBN(0x399d49eb, 0x914d5e53)}},
+         {{TOBN(0x380a496d, 0x6ec293cd), TOBN(0x733dbda7, 0x8e7051f5),
+           TOBN(0x037e388d, 0xb849140a), TOBN(0xee4b32b0, 0x5946dbf6)},
+          {TOBN(0xb1c4fda9, 0xcae368d1), TOBN(0x5001a7b0, 0xfdb0b2f3),
+           TOBN(0x6df59374, 0x2e3ac46e), TOBN(0x4af675f2, 0x39b3e656)}},
+         {{TOBN(0x44e38110, 0x39949296), TOBN(0x5b63827b, 0x361db1b5),
+           TOBN(0x3e5323ed, 0x206eaff5), TOBN(0x942370d2, 0xc21f4290)},
+          {TOBN(0xf2caaf2e, 0xe0d985a1), TOBN(0x192cc64b, 0x7239846d),
+           TOBN(0x7c0b8f47, 0xae6312f8), TOBN(0x7dc61f91, 0x96620108)}},
+         {{TOBN(0xb830fb5b, 0xc2da7de9), TOBN(0xd0e643df, 0x0ff8d3be),
+           TOBN(0x31ee77ba, 0x188a9641), TOBN(0x4e8aa3aa, 0xbcf6d502)},
+          {TOBN(0xf9fb6532, 0x9a49110f), TOBN(0xd18317f6, 0x2dd6b220),
+           TOBN(0x7e3ced41, 0x52c3ea5a), TOBN(0x0d296a14, 0x7d579c4a)}},
+         {{TOBN(0x35d6a53e, 0xed4c3717), TOBN(0x9f8240cf, 0x3d0ed2a3),
+           TOBN(0x8c0d4d05, 0xe5543aa5), TOBN(0x45d5bbfb, 0xdd33b4b4)},
+          {TOBN(0xfa04cc73, 0x137fd28e), TOBN(0x862ac6ef, 0xc73b3ffd),
+           TOBN(0x403ff9f5, 0x31f51ef2), TOBN(0x34d5e0fc, 0xbc73f5a2)}},
+         {{TOBN(0xf2526820, 0x08913f4f), TOBN(0xea20ed61, 0xeac93d95),
+           TOBN(0x51ed38b4, 0x6ca6b26c), TOBN(0x8662dcbc, 0xea4327b0)},
+          {TOBN(0x6daf295c, 0x725d2aaa), TOBN(0xbad2752f, 0x8e52dcda),
+           TOBN(0x2210e721, 0x0b17dacc), TOBN(0xa37f7912, 0xd51e8232)}},
+         {{TOBN(0x4f7081e1, 0x44cc3add), TOBN(0xd5ffa1d6, 0x87be82cf),
+           TOBN(0x89890b6c, 0x0edd6472), TOBN(0xada26e1a, 0x3ed17863)},
+          {TOBN(0x276f2715, 0x63483caa), TOBN(0xe6924cd9, 0x2f6077fd),
+           TOBN(0x05a7fe98, 0x0a466e3c), TOBN(0xf1c794b0, 0xb1902d1f)}},
+         {{TOBN(0xe5213688, 0x82a8042c), TOBN(0xd931cfaf, 0xcd278298),
+           TOBN(0x069a0ae0, 0xf597a740), TOBN(0x0adbb3f3, 0xeb59107c)},
+          {TOBN(0x983e951e, 0x5eaa8eb8), TOBN(0xe663a8b5, 0x11b48e78),
+           TOBN(0x1631cc0d, 0x8a03f2c5), TOBN(0x7577c11e, 0x11e271e2)}},
+         {{TOBN(0x33b2385c, 0x08369a90), TOBN(0x2990c59b, 0x190eb4f8),
+           TOBN(0x819a6145, 0xc68eac80), TOBN(0x7a786d62, 0x2ec4a014)},
+          {TOBN(0x33faadbe, 0x20ac3a8d), TOBN(0x31a21781, 0x5aba2d30),
+           TOBN(0x209d2742, 0xdba4f565), TOBN(0xdb2ce9e3, 0x55aa0fbb)}},
+         {{TOBN(0x8cef334b, 0x168984df), TOBN(0xe81dce17, 0x33879638),
+           TOBN(0xf6e6949c, 0x263720f0), TOBN(0x5c56feaf, 0xf593cbec)},
+          {TOBN(0x8bff5601, 0xfde58c84), TOBN(0x74e24117, 0x2eccb314),
+           TOBN(0xbcf01b61, 0x4c9a8a78), TOBN(0xa233e35e, 0x544c9868)}},
+         {{TOBN(0xb3156bf3, 0x8bd7aff1), TOBN(0x1b5ee4cb, 0x1d81b146),
+           TOBN(0x7ba1ac41, 0xd628a915), TOBN(0x8f3a8f9c, 0xfd89699e)},
+          {TOBN(0x7329b9c9, 0xa0748be7), TOBN(0x1d391c95, 0xa92e621f),
+           TOBN(0xe51e6b21, 0x4d10a837), TOBN(0xd255f53a, 0x4947b435)}},
+         {{TOBN(0x07669e04, 0xf1788ee3), TOBN(0xc14f27af, 0xa86938a2),
+           TOBN(0x8b47a334, 0xe93a01c0), TOBN(0xff627438, 0xd9366808)},
+          {TOBN(0x7a0985d8, 0xca2a5965), TOBN(0x3d9a5542, 0xd6e9b9b3),
+           TOBN(0xc23eb80b, 0x4cf972e8), TOBN(0x5c1c33bb, 0x4fdf72fd)}},
+         {{TOBN(0x0c4a58d4, 0x74a86108), TOBN(0xf8048a8f, 0xee4c5d90),
+           TOBN(0xe3c7c924, 0xe86d4c80), TOBN(0x28c889de, 0x056a1e60)},
+          {TOBN(0x57e2662e, 0xb214a040), TOBN(0xe8c48e98, 0x37e10347),
+           TOBN(0x87742862, 0x80ac748a), TOBN(0xf1c24022, 0x186b06f2)}},
+         {{TOBN(0xac2dd4c3, 0x5f74040a), TOBN(0x409aeb71, 0xfceac957),
+           TOBN(0x4fbad782, 0x55c4ec23), TOBN(0xb359ed61, 0x8a7b76ec)},
+          {TOBN(0x12744926, 0xed6f4a60), TOBN(0xe21e8d7f, 0x4b912de3),
+           TOBN(0xe2575a59, 0xfc705a59), TOBN(0x72f1d4de, 0xed2dbc0e)}},
+         {{TOBN(0x3d2b24b9, 0xeb7926b8), TOBN(0xbff88cb3, 0xcdbe5509),
+           TOBN(0xd0f399af, 0xe4dd640b), TOBN(0x3c5fe130, 0x2f76ed45)},
+          {TOBN(0x6f3562f4, 0x3764fb3d), TOBN(0x7b5af318, 0x3151b62d),
+           TOBN(0xd5bd0bc7, 0xd79ce5f3), TOBN(0xfdaf6b20, 0xec66890f)}},
+         {{TOBN(0x735c67ec, 0x6063540c), TOBN(0x50b259c2, 0xe5f9cb8f),
+           TOBN(0xb8734f9a, 0x3f99c6ab), TOBN(0xf8cc13d5, 0xa3a7bc85)},
+          {TOBN(0x80c1b305, 0xc5217659), TOBN(0xfe5364d4, 0x4ec12a54),
+           TOBN(0xbd87045e, 0x681345fe), TOBN(0x7f8efeb1, 0x582f897f)}},
+         {{TOBN(0xe8cbf1e5, 0xd5923359), TOBN(0xdb0cea9d, 0x539b9fb0),
+           TOBN(0x0c5b34cf, 0x49859b98), TOBN(0x5e583c56, 0xa4403cc6)},
+          {TOBN(0x11fc1a2d, 0xd48185b7), TOBN(0xc93fbc7e, 0x6e521787),
+           TOBN(0x47e7a058, 0x05105b8b), TOBN(0x7b4d4d58, 0xdb8260c8)}},
+         {{TOBN(0xe33930b0, 0x46eb842a), TOBN(0x8e844a9a, 0x7bdae56d),
+           TOBN(0x34ef3a9e, 0x13f7fdfc), TOBN(0xb3768f82, 0x636ca176)},
+          {TOBN(0x2821f4e0, 0x4e09e61c), TOBN(0x414dc3a1, 0xa0c7cddc),
+           TOBN(0xd5379437, 0x54945fcd), TOBN(0x151b6eef, 0xb3555ff1)}},
+         {{TOBN(0xb31bd613, 0x6339c083), TOBN(0x39ff8155, 0xdfb64701),
+           TOBN(0x7c3388d2, 0xe29604ab), TOBN(0x1e19084b, 0xa6b10442)},
+          {TOBN(0x17cf54c0, 0xeccd47ef), TOBN(0x89693385, 0x4a5dfb30),
+           TOBN(0x69d023fb, 0x47daf9f6), TOBN(0x9222840b, 0x7d91d959)}},
+         {{TOBN(0x439108f5, 0x803bac62), TOBN(0x0b7dd91d, 0x379bd45f),
+           TOBN(0xd651e827, 0xca63c581), TOBN(0x5c5d75f6, 0x509c104f)},
+          {TOBN(0x7d5fc738, 0x1f2dc308), TOBN(0x20faa7bf, 0xd98454be),
+           TOBN(0x95374bee, 0xa517b031), TOBN(0xf036b9b1, 0x642692ac)}},
+         {{TOBN(0xc5106109, 0x39842194), TOBN(0xb7e2353e, 0x49d05295),
+           TOBN(0xfc8c1d5c, 0xefb42ee0), TOBN(0xe04884eb, 0x08ce811c)},
+          {TOBN(0xf1f75d81, 0x7419f40e), TOBN(0x5b0ac162, 0xa995c241),
+           TOBN(0x120921bb, 0xc4c55646), TOBN(0x713520c2, 0x8d33cf97)}},
+         {{TOBN(0xb4a65a5c, 0xe98c5100), TOBN(0x6cec871d, 0x2ddd0f5a),
+           TOBN(0x251f0b7f, 0x9ba2e78b), TOBN(0x224a8434, 0xce3a2a5f)},
+          {TOBN(0x26827f61, 0x25f5c46f), TOBN(0x6a22bedc, 0x48545ec0),
+           TOBN(0x25ae5fa0, 0xb1bb5cdc), TOBN(0xd693682f, 0xfcb9b98f)}},
+         {{TOBN(0x32027fe8, 0x91e5d7d3), TOBN(0xf14b7d17, 0x73a07678),
+           TOBN(0xf88497b3, 0xc0dfdd61), TOBN(0xf7c2eec0, 0x2a8c4f48)},
+          {TOBN(0xaa5573f4, 0x3756e621), TOBN(0xc013a240, 0x1825b948),
+           TOBN(0x1c03b345, 0x63878572), TOBN(0xa0472bea, 0x653a4184)}},
+         {{TOBN(0xf4222e27, 0x0ac69a80), TOBN(0x34096d25, 0xf51e54f6),
+           TOBN(0x00a648cb, 0x8fffa591), TOBN(0x4e87acdc, 0x69b6527f)},
+          {TOBN(0x0575e037, 0xe285ccb4), TOBN(0x188089e4, 0x50ddcf52),
+           TOBN(0xaa96c9a8, 0x870ff719), TOBN(0x74a56cd8, 0x1fc7e369)}},
+         {{TOBN(0x41d04ee2, 0x1726931a), TOBN(0x0bbbb2c8, 0x3660ecfd),
+           TOBN(0xa6ef6de5, 0x24818e18), TOBN(0xe421cc51, 0xe7d57887)},
+          {TOBN(0xf127d208, 0xbea87be6), TOBN(0x16a475d3, 0xb1cdd682),
+           TOBN(0x9db1b684, 0x439b63f7), TOBN(0x5359b3db, 0xf0f113b6)}},
+         {{TOBN(0xdfccf1de, 0x8bf06e31), TOBN(0x1fdf8f44, 0xdd383901),
+           TOBN(0x10775cad, 0x5017e7d2), TOBN(0xdfc3a597, 0x58d11eef)},
+          {TOBN(0x6ec9c8a0, 0xb1ecff10), TOBN(0xee6ed6cc, 0x28400549),
+           TOBN(0xb5ad7bae, 0x1b4f8d73), TOBN(0x61b4f11d, 0xe00aaab9)}},
+         {{TOBN(0x7b32d69b, 0xd4eff2d7), TOBN(0x88ae6771, 0x4288b60f),
+           TOBN(0x159461b4, 0x37a1e723), TOBN(0x1f3d4789, 0x570aae8c)},
+          {TOBN(0x869118c0, 0x7f9871da), TOBN(0x35fbda78, 0xf635e278),
+           TOBN(0x738f3641, 0xe1541dac), TOBN(0x6794b13a, 0xc0dae45f)}},
+         {{TOBN(0x065064ac, 0x09cc0917), TOBN(0x27c53729, 0xc68540fd),
+           TOBN(0x0d2d4c8e, 0xef227671), TOBN(0xd23a9f80, 0xa1785a04)},
+          {TOBN(0x98c59528, 0x52650359), TOBN(0xfa09ad01, 0x74a1acad),
+           TOBN(0x082d5a29, 0x0b55bf5c), TOBN(0xa40f1c67, 0x419b8084)}},
+         {{TOBN(0x3a5c752e, 0xdcc18770), TOBN(0x4baf1f2f, 0x8825c3a5),
+           TOBN(0xebd63f74, 0x21b153ed), TOBN(0xa2383e47, 0xb2f64723)},
+          {TOBN(0xe7bf620a, 0x2646d19a), TOBN(0x56cb44ec, 0x03c83ffd),
+           TOBN(0xaf7267c9, 0x4f6be9f1), TOBN(0x8b2dfd7b, 0xc06bb5e9)}},
+         {{TOBN(0xb87072f2, 0xa672c5c7), TOBN(0xeacb11c8, 0x0d53c5e2),
+           TOBN(0x22dac29d, 0xff435932), TOBN(0x37bdb99d, 0x4408693c)},
+          {TOBN(0xf6e62fb6, 0x2899c20f), TOBN(0x3535d512, 0x447ece24),
+           TOBN(0xfbdc6b88, 0xff577ce3), TOBN(0x726693bd, 0x190575f2)}},
+         {{TOBN(0x6772b0e5, 0xab4b35a2), TOBN(0x1d8b6001, 0xf5eeaacf),
+           TOBN(0x728f7ce4, 0x795b9580), TOBN(0x4a20ed2a, 0x41fb81da)},
+          {TOBN(0x9f685cd4, 0x4fec01e6), TOBN(0x3ed7ddcc, 0xa7ff50ad),
+           TOBN(0x460fd264, 0x0c2d97fd), TOBN(0x3a241426, 0xeb82f4f9)}},
+         {{TOBN(0x17d1df2c, 0x6a8ea820), TOBN(0xb2b50d3b, 0xf22cc254),
+           TOBN(0x03856cba, 0xb7291426), TOBN(0x87fd26ae, 0x04f5ee39)},
+          {TOBN(0x9cb696cc, 0x02bee4ba), TOBN(0x53121804, 0x06820fd6),
+           TOBN(0xa5dfc269, 0x0212e985), TOBN(0x666f7ffa, 0x160f9a09)}},
+         {{TOBN(0xc503cd33, 0xbccd9617), TOBN(0x365dede4, 0xba7730a3),
+           TOBN(0x798c6355, 0x5ddb0786), TOBN(0xa6c3200e, 0xfc9cd3bc)},
+          {TOBN(0x060ffb2c, 0xe5e35efd), TOBN(0x99a4e25b, 0x5555a1c1),
+           TOBN(0x11d95375, 0xf70b3751), TOBN(0x0a57354a, 0x160e1bf6)}},
+         {{TOBN(0xecb3ae4b, 0xf8e4b065), TOBN(0x07a834c4, 0x2e53022b),
+           TOBN(0x1cd300b3, 0x8692ed96), TOBN(0x16a6f792, 0x61ee14ec)},
+          {TOBN(0x8f1063c6, 0x6a8649ed), TOBN(0xfbcdfcfe, 0x869f3e14),
+           TOBN(0x2cfb97c1, 0x00a7b3ec), TOBN(0xcea49b3c, 0x7130c2f1)}},
+         {{TOBN(0x462d044f, 0xe9d96488), TOBN(0x4b53d52e, 0x8182a0c1),
+           TOBN(0x84b6ddd3, 0x0391e9e9), TOBN(0x80ab7b48, 0xb1741a09)},
+          {TOBN(0xec0e15d4, 0x27d3317f), TOBN(0x8dfc1ddb, 0x1a64671e),
+           TOBN(0x93cc5d5f, 0xd49c5b92), TOBN(0xc995d53d, 0x3674a331)}},
+         {{TOBN(0x302e41ec, 0x090090ae), TOBN(0x2278a0cc, 0xedb06830),
+           TOBN(0x1d025932, 0xfbc99690), TOBN(0x0c32fbd2, 0xb80d68da)},
+          {TOBN(0xd79146da, 0xf341a6c1), TOBN(0xae0ba139, 0x1bef68a0),
+           TOBN(0xc6b8a563, 0x8d774b3a), TOBN(0x1cf307bd, 0x880ba4d7)}},
+         {{TOBN(0xc033bdc7, 0x19803511), TOBN(0xa9f97b3b, 0x8888c3be),
+           TOBN(0x3d68aebc, 0x85c6d05e), TOBN(0xc3b88a9d, 0x193919eb)},
+          {TOBN(0x2d300748, 0xc48b0ee3), TOBN(0x7506bc7c, 0x07a746c1),
+           TOBN(0xfc48437c, 0x6e6d57f3), TOBN(0x5bd71587, 0xcfeaa91a)}},
+         {{TOBN(0xa4ed0408, 0xc1bc5225), TOBN(0xd0b946db, 0x2719226d),
+           TOBN(0x109ecd62, 0x758d2d43), TOBN(0x75c8485a, 0x2751759b)},
+          {TOBN(0xb0b75f49, 0x9ce4177a), TOBN(0x4fa61a1e, 0x79c10c3d),
+           TOBN(0xc062d300, 0xa167fcd7), TOBN(0x4df3874c, 0x750f0fa8)}},
+         {{TOBN(0x29ae2cf9, 0x83dfedc9), TOBN(0xf8437134, 0x8d87631a),
+           TOBN(0xaf571711, 0x7429c8d2), TOBN(0x18d15867, 0x146d9272)},
+          {TOBN(0x83053ecf, 0x69769bb7), TOBN(0xc55eb856, 0xc479ab82),
+           TOBN(0x5ef7791c, 0x21b0f4b2), TOBN(0xaa5956ba, 0x3d491525)}},
+         {{TOBN(0x407a96c2, 0x9fe20eba), TOBN(0xf27168bb, 0xe52a5ad3),
+           TOBN(0x43b60ab3, 0xbf1d9d89), TOBN(0xe45c51ef, 0x710e727a)},
+          {TOBN(0xdfca5276, 0x099b4221), TOBN(0x8dc6407c, 0x2557a159),
+           TOBN(0x0ead8335, 0x91035895), TOBN(0x0a9db957, 0x9c55dc32)}},
+         {{TOBN(0xe40736d3, 0xdf61bc76), TOBN(0x13a619c0, 0x3f778cdb),
+           TOBN(0x6dd921a4, 0xc56ea28f), TOBN(0x76a52433, 0x2fa647b4)},
+          {TOBN(0x23591891, 0xac5bdc5d), TOBN(0xff4a1a72, 0xbac7dc01),
+           TOBN(0x9905e261, 0x62df8453), TOBN(0x3ac045df, 0xe63b265f)}},
+         {{TOBN(0x8a3f341b, 0xad53dba7), TOBN(0x8ec269cc, 0x837b625a),
+           TOBN(0xd71a2782, 0x3ae31189), TOBN(0x8fb4f9a3, 0x55e96120)},
+          {TOBN(0x804af823, 0xff9875cf), TOBN(0x23224f57, 0x5d442a9b),
+           TOBN(0x1c4d3b9e, 0xecc62679), TOBN(0x91da22fb, 0xa0e7ddb1)}},
+         {{TOBN(0xa370324d, 0x6c04a661), TOBN(0x9710d3b6, 0x5e376d17),
+           TOBN(0xed8c98f0, 0x3044e357), TOBN(0xc364ebbe, 0x6422701c)},
+          {TOBN(0x347f5d51, 0x7733d61c), TOBN(0xd55644b9, 0xcea826c3),
+           TOBN(0x80c6e0ad, 0x55a25548), TOBN(0x0aa7641d, 0x844220a7)}},
+         {{TOBN(0x1438ec81, 0x31810660), TOBN(0x9dfa6507, 0xde4b4043),
+           TOBN(0x10b515d8, 0xcc3e0273), TOBN(0x1b6066dd, 0x28d8cfb2)},
+          {TOBN(0xd3b04591, 0x9c9efebd), TOBN(0x425d4bdf, 0xa21c1ff4),
+           TOBN(0x5fe5af19, 0xd57607d3), TOBN(0xbbf773f7, 0x54481084)}},
+         {{TOBN(0x8435bd69, 0x94b03ed1), TOBN(0xd9ad1de3, 0x634cc546),
+           TOBN(0x2cf423fc, 0x00e420ca), TOBN(0xeed26d80, 0xa03096dd)},
+          {TOBN(0xd7f60be7, 0xa4db09d2), TOBN(0xf47f569d, 0x960622f7),
+           TOBN(0xe5925fd7, 0x7296c729), TOBN(0xeff2db26, 0x26ca2715)}},
+         {{TOBN(0xa6fcd014, 0xb913e759), TOBN(0x53da4786, 0x8ff4de93),
+           TOBN(0x14616d79, 0xc32068e1), TOBN(0xb187d664, 0xccdf352e)},
+          {TOBN(0xf7afb650, 0x1dc90b59), TOBN(0x8170e943, 0x7daa1b26),
+           TOBN(0xc8e3bdd8, 0x700c0a84), TOBN(0x6e8d345f, 0x6482bdfa)}},
+         {{TOBN(0x84cfbfa1, 0xc5c5ea50), TOBN(0xd3baf14c, 0x67960681),
+           TOBN(0x26398403, 0x0dd50942), TOBN(0xe4b7839c, 0x4716a663)},
+          {TOBN(0xd5f1f794, 0xe7de6dc0), TOBN(0x5cd0f4d4, 0x622aa7ce),
+           TOBN(0x5295f3f1, 0x59acfeec), TOBN(0x8d933552, 0x953e0607)}},
+         {{TOBN(0xc7db8ec5, 0x776c5722), TOBN(0xdc467e62, 0x2b5f290c),
+           TOBN(0xd4297e70, 0x4ff425a9), TOBN(0x4be924c1, 0x0cf7bb72)},
+          {TOBN(0x0d5dc5ae, 0xa1892131), TOBN(0x8bf8a8e3, 0xa705c992),
+           TOBN(0x73a0b064, 0x7a305ac5), TOBN(0x00c9ca4e, 0x9a8c77a8)}},
+         {{TOBN(0x5dfee80f, 0x83774bdd), TOBN(0x63131602, 0x85734485),
+           TOBN(0xa1b524ae, 0x914a69a9), TOBN(0xebc2ffaf, 0xd4e300d7)},
+          {TOBN(0x52c93db7, 0x7cfa46a5), TOBN(0x71e6161f, 0x21653b50),
+           TOBN(0x3574fc57, 0xa4bc580a), TOBN(0xc09015dd, 0xe1bc1253)}},
+         {{TOBN(0x4b7b47b2, 0xd174d7aa), TOBN(0x4072d8e8, 0xf3a15d04),
+           TOBN(0xeeb7d47f, 0xd6fa07ed), TOBN(0x6f2b9ff9, 0xedbdafb1)},
+          {TOBN(0x18c51615, 0x3760fe8a), TOBN(0x7a96e6bf, 0xf06c6c13),
+           TOBN(0x4d7a0410, 0x0ea2d071), TOBN(0xa1914e9b, 0x0be2a5ce)}},
+         {{TOBN(0x5726e357, 0xd8a3c5cf), TOBN(0x1197ecc3, 0x2abb2b13),
+           TOBN(0x6c0d7f7f, 0x31ae88dd), TOBN(0x15b20d1a, 0xfdbb3efe)},
+          {TOBN(0xcd06aa26, 0x70584039), TOBN(0x2277c969, 0xa7dc9747),
+           TOBN(0xbca69587, 0x7855d815), TOBN(0x899ea238, 0x5188b32a)}},
+         {{TOBN(0x37d9228b, 0x760c1c9d), TOBN(0xc7efbb11, 0x9b5c18da),
+           TOBN(0x7f0d1bc8, 0x19f6dbc5), TOBN(0x4875384b, 0x07e6905b)},
+          {TOBN(0xc7c50baa, 0x3ba8cd86), TOBN(0xb0ce40fb, 0xc2905de0),
+           TOBN(0x70840673, 0x7a231952), TOBN(0xa912a262, 0xcf43de26)}},
+         {{TOBN(0x9c38ddcc, 0xeb5b76c1), TOBN(0x746f5285, 0x26fc0ab4),
+           TOBN(0x52a63a50, 0xd62c269f), TOBN(0x60049c55, 0x99458621)},
+          {TOBN(0xe7f48f82, 0x3c2f7c9e), TOBN(0x6bd99043, 0x917d5cf3),
+           TOBN(0xeb1317a8, 0x8701f469), TOBN(0xbd3fe2ed, 0x9a449fe0)}},
+         {{TOBN(0x421e79ca, 0x12ef3d36), TOBN(0x9ee3c36c, 0x3e7ea5de),
+           TOBN(0xe48198b5, 0xcdff36f7), TOBN(0xaff4f967, 0xc6b82228)},
+          {TOBN(0x15e19dd0, 0xc47adb7e), TOBN(0x45699b23, 0x032e7dfa),
+           TOBN(0x40680c8b, 0x1fae026a), TOBN(0x5a347a48, 0x550dbf4d)}},
+         {{TOBN(0xe652533b, 0x3cef0d7d), TOBN(0xd94f7b18, 0x2bbb4381),
+           TOBN(0x838752be, 0x0e80f500), TOBN(0x8e6e2488, 0x9e9c9bfb)},
+          {TOBN(0xc9751697, 0x16caca6a), TOBN(0x866c49d8, 0x38531ad9),
+           TOBN(0xc917e239, 0x7151ade1), TOBN(0x2d016ec1, 0x6037c407)}},
+         {{TOBN(0xa407ccc9, 0x00eac3f9), TOBN(0x835f6280, 0xe2ed4748),
+           TOBN(0xcc54c347, 0x1cc98e0d), TOBN(0x0e969937, 0xdcb572eb)},
+          {TOBN(0x1b16c8e8, 0x8f30c9cb), TOBN(0xa606ae75, 0x373c4661),
+           TOBN(0x47aa689b, 0x35502cab), TOBN(0xf89014ae, 0x4d9bb64f)}},
+         {{TOBN(0x202f6a9c, 0x31c71f7b), TOBN(0x01f95aa3, 0x296ffe5c),
+           TOBN(0x5fc06014, 0x53cec3a3), TOBN(0xeb991237, 0x5f498a45)},
+          {TOBN(0xae9a935e, 0x5d91ba87), TOBN(0xc6ac6281, 0x0b564a19),
+           TOBN(0x8a8fe81c, 0x3bd44e69), TOBN(0x7c8b467f, 0x9dd11d45)}},
+         {{TOBN(0xf772251f, 0xea5b8e69), TOBN(0xaeecb3bd, 0xc5b75fbc),
+           TOBN(0x1aca3331, 0x887ff0e5), TOBN(0xbe5d49ff, 0x19f0a131)},
+          {TOBN(0x582c13aa, 0xe5c8646f), TOBN(0xdbaa12e8, 0x20e19980),
+           TOBN(0x8f40f31a, 0xf7abbd94), TOBN(0x1f13f5a8, 0x1dfc7663)}},
+         {{TOBN(0x5d81f1ee, 0xaceb4fc0), TOBN(0x36256002, 0x5e6f0f42),
+           TOBN(0x4b67d6d7, 0x751370c8), TOBN(0x2608b698, 0x03e80589)},
+          {TOBN(0xcfc0d2fc, 0x05268301), TOBN(0xa6943d39, 0x40309212),
+           TOBN(0x192a90c2, 0x1fd0e1c2), TOBN(0xb209f113, 0x37f1dc76)}},
+         {{TOBN(0xefcc5e06, 0x97bf1298), TOBN(0xcbdb6730, 0x219d639e),
+           TOBN(0xd009c116, 0xb81e8c6f), TOBN(0xa3ffdde3, 0x1a7ce2e5)},
+          {TOBN(0xc53fbaaa, 0xa914d3ba), TOBN(0x836d500f, 0x88df85ee),
+           TOBN(0xd98dc71b, 0x66ee0751), TOBN(0x5a3d7005, 0x714516fd)}},
+         {{TOBN(0x21d3634d, 0x39eedbba), TOBN(0x35cd2e68, 0x0455a46d),
+           TOBN(0xc8cafe65, 0xf9d7eb0c), TOBN(0xbda3ce9e, 0x00cefb3e)},
+          {TOBN(0xddc17a60, 0x2c9cf7a4), TOBN(0x01572ee4, 0x7bcb8773),
+           TOBN(0xa92b2b01, 0x8c7548df), TOBN(0x732fd309, 0xa84600e3)}},
+         {{TOBN(0xe22109c7, 0x16543a40), TOBN(0x9acafd36, 0xfede3c6c),
+           TOBN(0xfb206852, 0x6824e614), TOBN(0x2a4544a9, 0xda25dca0)},
+          {TOBN(0x25985262, 0x91d60b06), TOBN(0x281b7be9, 0x28753545),
+           TOBN(0xec667b1a, 0x90f13b27), TOBN(0x33a83aff, 0x940e2eb4)}},
+         {{TOBN(0x80009862, 0xd5d721d5), TOBN(0x0c3357a3, 0x5bd3a182),
+           TOBN(0x27f3a83b, 0x7aa2cda4), TOBN(0xb58ae74e, 0xf6f83085)},
+          {TOBN(0x2a911a81, 0x2e6dad6b), TOBN(0xde286051, 0xf43d6c5b),
+           TOBN(0x4bdccc41, 0xf996c4d8), TOBN(0xe7312ec0, 0x0ae1e24e)}}},
+        {{{TOBN(0xf8d112e7, 0x6e6485b3), TOBN(0x4d3e24db, 0x771c52f8),
+           TOBN(0x48e3ee41, 0x684a2f6d), TOBN(0x7161957d, 0x21d95551)},
+          {TOBN(0x19631283, 0xcdb12a6c), TOBN(0xbf3fa882, 0x2e50e164),
+           TOBN(0xf6254b63, 0x3166cc73), TOBN(0x3aefa7ae, 0xaee8cc38)}},
+         {{TOBN(0x79b0fe62, 0x3b36f9fd), TOBN(0x26543b23, 0xfde19fc0),
+           TOBN(0x136e64a0, 0x958482ef), TOBN(0x23f63771, 0x9b095825)},
+          {TOBN(0x14cfd596, 0xb6a1142e), TOBN(0x5ea6aac6, 0x335aac0b),
+           TOBN(0x86a0e8bd, 0xf3081dd5), TOBN(0x5fb89d79, 0x003dc12a)}},
+         {{TOBN(0xf615c33a, 0xf72e34d4), TOBN(0x0bd9ea40, 0x110eec35),
+           TOBN(0x1c12bc5b, 0xc1dea34e), TOBN(0x686584c9, 0x49ae4699)},
+          {TOBN(0x13ad95d3, 0x8c97b942), TOBN(0x4609561a, 0x4e5c7562),
+           TOBN(0x9e94a4ae, 0xf2737f89), TOBN(0xf57594c6, 0x371c78b6)}},
+         {{TOBN(0x0f0165fc, 0xe3779ee3), TOBN(0xe00e7f9d, 0xbd495d9e),
+           TOBN(0x1fa4efa2, 0x20284e7a), TOBN(0x4564bade, 0x47ac6219)},
+          {TOBN(0x90e6312a, 0xc4708e8e), TOBN(0x4f5725fb, 0xa71e9adf),
+           TOBN(0xe95f55ae, 0x3d684b9f), TOBN(0x47f7ccb1, 0x1e94b415)}},
+         {{TOBN(0x7322851b, 0x8d946581), TOBN(0xf0d13133, 0xbdf4a012),
+           TOBN(0xa3510f69, 0x6584dae0), TOBN(0x03a7c171, 0x3c9f6c6d)},
+          {TOBN(0x5be97f38, 0xe475381a), TOBN(0xca1ba422, 0x85823334),
+           TOBN(0xf83cc5c7, 0x0be17dda), TOBN(0x158b1494, 0x0b918c0f)}},
+         {{TOBN(0xda3a77e5, 0x522e6b69), TOBN(0x69c908c3, 0xbbcd6c18),
+           TOBN(0x1f1b9e48, 0xd924fd56), TOBN(0x37c64e36, 0xaa4bb3f7)},
+          {TOBN(0x5a4fdbdf, 0xee478d7d), TOBN(0xba75c8bc, 0x0193f7a0),
+           TOBN(0x84bc1e84, 0x56cd16df), TOBN(0x1fb08f08, 0x46fad151)}},
+         {{TOBN(0x8a7cabf9, 0x842e9f30), TOBN(0xa331d4bf, 0x5eab83af),
+           TOBN(0xd272cfba, 0x017f2a6a), TOBN(0x27560abc, 0x83aba0e3)},
+          {TOBN(0x94b83387, 0x0e3a6b75), TOBN(0x25c6aea2, 0x6b9f50f5),
+           TOBN(0x803d691d, 0xb5fdf6d0), TOBN(0x03b77509, 0xe6333514)}},
+         {{TOBN(0x36178903, 0x61a341c1), TOBN(0x3604dc60, 0x0cfd6142),
+           TOBN(0x022295eb, 0x8533316c), TOBN(0x3dbde4ac, 0x44af2922)},
+          {TOBN(0x898afc5d, 0x1c7eef69), TOBN(0x58896805, 0xd14f4fa1),
+           TOBN(0x05002160, 0x203c21ca), TOBN(0x6f0d1f30, 0x40ef730b)}},
+         {{TOBN(0x8e8c44d4, 0x196224f8), TOBN(0x75a4ab95, 0x374d079d),
+           TOBN(0x79085ecc, 0x7d48f123), TOBN(0x56f04d31, 0x1bf65ad8)},
+          {TOBN(0xe220bf1c, 0xbda602b2), TOBN(0x73ee1742, 0xf9612c69),
+           TOBN(0x76008fc8, 0x084fd06b), TOBN(0x4000ef9f, 0xf11380d1)}},
+         {{TOBN(0x48201b4b, 0x12cfe297), TOBN(0x3eee129c, 0x292f74e5),
+           TOBN(0xe1fe114e, 0xc9e874e8), TOBN(0x899b055c, 0x92c5fc41)},
+          {TOBN(0x4e477a64, 0x3a39c8cf), TOBN(0x82f09efe, 0x78963cc9),
+           TOBN(0x6fd3fd8f, 0xd333f863), TOBN(0x85132b2a, 0xdc949c63)}},
+         {{TOBN(0x7e06a3ab, 0x516eb17b), TOBN(0x73bec06f, 0xd2c7372b),
+           TOBN(0xe4f74f55, 0xba896da6), TOBN(0xbb4afef8, 0x8e9eb40f)},
+          {TOBN(0x2d75bec8, 0xe61d66b0), TOBN(0x02bda4b4, 0xef29300b),
+           TOBN(0x8bbaa8de, 0x026baa5a), TOBN(0xff54befd, 0xa07f4440)}},
+         {{TOBN(0xbd9b8b1d, 0xbe7a2af3), TOBN(0xec51caa9, 0x4fb74a72),
+           TOBN(0xb9937a4b, 0x63879697), TOBN(0x7c9a9d20, 0xec2687d5)},
+          {TOBN(0x1773e44f, 0x6ef5f014), TOBN(0x8abcf412, 0xe90c6900),
+           TOBN(0x387bd022, 0x8142161e), TOBN(0x50393755, 0xfcb6ff2a)}},
+         {{TOBN(0x9813fd56, 0xed6def63), TOBN(0x53cf6482, 0x7d53106c),
+           TOBN(0x991a35bd, 0x431f7ac1), TOBN(0xf1e274dd, 0x63e65faf)},
+          {TOBN(0xf63ffa3c, 0x44cc7880), TOBN(0x411a426b, 0x7c256981),
+           TOBN(0xb698b9fd, 0x93a420e0), TOBN(0x89fdddc0, 0xae53f8fe)}},
+         {{TOBN(0x766e0722, 0x32398baa), TOBN(0x205fee42, 0x5cfca031),
+           TOBN(0xa49f5341, 0x7a029cf2), TOBN(0xa88c68b8, 0x4023890d)},
+          {TOBN(0xbc275041, 0x7337aaa8), TOBN(0x9ed364ad, 0x0eb384f4),
+           TOBN(0xe0816f85, 0x29aba92f), TOBN(0x2e9e1941, 0x04e38a88)}},
+         {{TOBN(0x57eef44a, 0x3dafd2d5), TOBN(0x35d1fae5, 0x97ed98d8),
+           TOBN(0x50628c09, 0x2307f9b1), TOBN(0x09d84aae, 0xd6cba5c6)},
+          {TOBN(0x67071bc7, 0x88aaa691), TOBN(0x2dea57a9, 0xafe6cb03),
+           TOBN(0xdfe11bb4, 0x3d78ac01), TOBN(0x7286418c, 0x7fd7aa51)}},
+         {{TOBN(0xfabf7709, 0x77f7195a), TOBN(0x8ec86167, 0xadeb838f),
+           TOBN(0xea1285a8, 0xbb4f012d), TOBN(0xd6883503, 0x9a3eab3f)},
+          {TOBN(0xee5d24f8, 0x309004c2), TOBN(0xa96e4b76, 0x13ffe95e),
+           TOBN(0x0cdffe12, 0xbd223ea4), TOBN(0x8f5c2ee5, 0xb6739a53)}},
+         {{TOBN(0x5cb4aaa5, 0xdd968198), TOBN(0xfa131c52, 0x72413a6c),
+           TOBN(0x53d46a90, 0x9536d903), TOBN(0xb270f0d3, 0x48606d8e)},
+          {TOBN(0x518c7564, 0xa053a3bc), TOBN(0x088254b7, 0x1a86caef),
+           TOBN(0xb3ba8cb4, 0x0ab5efd0), TOBN(0x5c59900e, 0x4605945d)}},
+         {{TOBN(0xecace1dd, 0xa1887395), TOBN(0x40960f36, 0x932a65de),
+           TOBN(0x9611ff5c, 0x3aa95529), TOBN(0xc58215b0, 0x7c1e5a36)},
+          {TOBN(0xd48c9b58, 0xf0e1a524), TOBN(0xb406856b, 0xf590dfb8),
+           TOBN(0xc7605e04, 0x9cd95662), TOBN(0x0dd036ee, 0xa33ecf82)}},
+         {{TOBN(0xa50171ac, 0xc33156b3), TOBN(0xf09d24ea, 0x4a80172e),
+           TOBN(0x4e1f72c6, 0x76dc8eef), TOBN(0xe60caadc, 0x5e3d44ee)},
+          {TOBN(0x006ef8a6, 0x979b1d8f), TOBN(0x60908a1c, 0x97788d26),
+           TOBN(0x6e08f95b, 0x266feec0), TOBN(0x618427c2, 0x22e8c94e)}},
+         {{TOBN(0x3d613339, 0x59145a65), TOBN(0xcd9bc368, 0xfa406337),
+           TOBN(0x82d11be3, 0x2d8a52a0), TOBN(0xf6877b27, 0x97a1c590)},
+          {TOBN(0x837a819b, 0xf5cbdb25), TOBN(0x2a4fd1d8, 0xde090249),
+           TOBN(0x622a7de7, 0x74990e5f), TOBN(0x840fa5a0, 0x7945511b)}},
+         {{TOBN(0x30b974be, 0x6558842d), TOBN(0x70df8c64, 0x17f3d0a6),
+           TOBN(0x7c803520, 0x7542e46d), TOBN(0x7251fe7f, 0xe4ecc823)},
+          {TOBN(0xe59134cb, 0x5e9aac9a), TOBN(0x11bb0934, 0xf0045d71),
+           TOBN(0x53e5d9b5, 0xdbcb1d4e), TOBN(0x8d97a905, 0x92defc91)}},
+         {{TOBN(0xfe289327, 0x7946d3f9), TOBN(0xe132bd24, 0x07472273),
+           TOBN(0xeeeb510c, 0x1eb6ae86), TOBN(0x777708c5, 0xf0595067)},
+          {TOBN(0x18e2c8cd, 0x1297029e), TOBN(0x2c61095c, 0xbbf9305e),
+           TOBN(0xe466c258, 0x6b85d6d9), TOBN(0x8ac06c36, 0xda1ea530)}},
+         {{TOBN(0xa365dc39, 0xa1304668), TOBN(0xe4a9c885, 0x07f89606),
+           TOBN(0x65a4898f, 0xacc7228d), TOBN(0x3e2347ff, 0x84ca8303)},
+          {TOBN(0xa5f6fb77, 0xea7d23a3), TOBN(0x2fac257d, 0x672a71cd),
+           TOBN(0x6908bef8, 0x7e6a44d3), TOBN(0x8ff87566, 0x891d3d7a)}},
+         {{TOBN(0xe58e90b3, 0x6b0cf82e), TOBN(0x6438d246, 0x2615b5e7),
+           TOBN(0x07b1f8fc, 0x669c145a), TOBN(0xb0d8b2da, 0x36f1e1cb)},
+          {TOBN(0x54d5dadb, 0xd9184c4d), TOBN(0x3dbb18d5, 0xf93d9976),
+           TOBN(0x0a3e0f56, 0xd1147d47), TOBN(0x2afa8c8d, 0xa0a48609)}},
+         {{TOBN(0x275353e8, 0xbc36742c), TOBN(0x898f427e, 0xeea0ed90),
+           TOBN(0x26f4947e, 0x3e477b00), TOBN(0x8ad8848a, 0x308741e3)},
+          {TOBN(0x6c703c38, 0xd74a2a46), TOBN(0x5e3e05a9, 0x9ba17ba2),
+           TOBN(0xc1fa6f66, 0x4ab9a9e4), TOBN(0x474a2d9a, 0x3841d6ec)}},
+         {{TOBN(0x871239ad, 0x653ae326), TOBN(0x14bcf72a, 0xa74cbb43),
+           TOBN(0x8737650e, 0x20d4c083), TOBN(0x3df86536, 0x110ed4af)},
+          {TOBN(0xd2d86fe7, 0xb53ca555), TOBN(0x688cb00d, 0xabd5d538),
+           TOBN(0xcf81bda3, 0x1ad38468), TOBN(0x7ccfe3cc, 0xf01167b6)}},
+         {{TOBN(0xcf4f47e0, 0x6c4c1fe6), TOBN(0x557e1f1a, 0x298bbb79),
+           TOBN(0xf93b974f, 0x30d45a14), TOBN(0x174a1d2d, 0x0baf97c4)},
+          {TOBN(0x7a003b30, 0xc51fbf53), TOBN(0xd8940991, 0xee68b225),
+           TOBN(0x5b0aa7b7, 0x1c0f4173), TOBN(0x975797c9, 0xa20a7153)}},
+         {{TOBN(0x26e08c07, 0xe3533d77), TOBN(0xd7222e6a, 0x2e341c99),
+           TOBN(0x9d60ec3d, 0x8d2dc4ed), TOBN(0xbdfe0d8f, 0x7c476cf8)},
+          {TOBN(0x1fe59ab6, 0x1d056605), TOBN(0xa9ea9df6, 0x86a8551f),
+           TOBN(0x8489941e, 0x47fb8d8c), TOBN(0xfeb874eb, 0x4a7f1b10)}},
+         {{TOBN(0xfe5fea86, 0x7ee0d98f), TOBN(0x201ad34b, 0xdbf61864),
+           TOBN(0x45d8fe47, 0x37c031d4), TOBN(0xd5f49fae, 0x795f0822)},
+          {TOBN(0xdb0fb291, 0xc7f4a40c), TOBN(0x2e69d9c1, 0x730ddd92),
+           TOBN(0x754e1054, 0x49d76987), TOBN(0x8a24911d, 0x7662db87)}},
+         {{TOBN(0x61fc1810, 0x60a71676), TOBN(0xe852d1a8, 0xf66a8ad1),
+           TOBN(0x172bbd65, 0x6417231e), TOBN(0x0d6de7bd, 0x3babb11f)},
+          {TOBN(0x6fde6f88, 0xc8e347f8), TOBN(0x1c587547, 0x9bd99cc3),
+           TOBN(0x78e54ed0, 0x34076950), TOBN(0x97f0f334, 0x796e83ba)}},
+         {{TOBN(0xe4dbe1ce, 0x4924867a), TOBN(0xbd5f51b0, 0x60b84917),
+           TOBN(0x37530040, 0x3cb09a79), TOBN(0xdb3fe0f8, 0xff1743d8)},
+          {TOBN(0xed7894d8, 0x556fa9db), TOBN(0xfa262169, 0x23412fbf),
+           TOBN(0x563be0db, 0xba7b9291), TOBN(0x6ca8b8c0, 0x0c9fb234)}},
+         {{TOBN(0xed406aa9, 0xbd763802), TOBN(0xc21486a0, 0x65303da1),
+           TOBN(0x61ae291e, 0xc7e62ec4), TOBN(0x622a0492, 0xdf99333e)},
+          {TOBN(0x7fd80c9d, 0xbb7a8ee0), TOBN(0xdc2ed3bc, 0x6c01aedb),
+           TOBN(0x35c35a12, 0x08be74ec), TOBN(0xd540cb1a, 0x469f671f)}},
+         {{TOBN(0xd16ced4e, 0xcf84f6c7), TOBN(0x8561fb9c, 0x2d090f43),
+           TOBN(0x7e693d79, 0x6f239db4), TOBN(0xa736f928, 0x77bd0d94)},
+          {TOBN(0x07b4d929, 0x2c1950ee), TOBN(0xda177543, 0x56dc11b3),
+           TOBN(0xa5dfbbaa, 0x7a6a878e), TOBN(0x1c70cb29, 0x4decb08a)}},
+         {{TOBN(0xfba28c8b, 0x6f0f7c50), TOBN(0xa8eba2b8, 0x854dcc6d),
+           TOBN(0x5ff8e89a, 0x36b78642), TOBN(0x070c1c8e, 0xf6873adf)},
+          {TOBN(0xbbd3c371, 0x6484d2e4), TOBN(0xfb78318f, 0x0d414129),
+           TOBN(0x2621a39c, 0x6ad93b0b), TOBN(0x979d74c2, 0xa9e917f7)}},
+         {{TOBN(0xfc195647, 0x61fb0428), TOBN(0x4d78954a, 0xbee624d4),
+           TOBN(0xb94896e0, 0xb8ae86fd), TOBN(0x6667ac0c, 0xc91c8b13)},
+          {TOBN(0x9f180512, 0x43bcf832), TOBN(0xfbadf8b7, 0xa0010137),
+           TOBN(0xc69b4089, 0xb3ba8aa7), TOBN(0xfac4bacd, 0xe687ce85)}},
+         {{TOBN(0x9164088d, 0x977eab40), TOBN(0x51f4c5b6, 0x2760b390),
+           TOBN(0xd238238f, 0x340dd553), TOBN(0x358566c3, 0xdb1d31c9)},
+          {TOBN(0x3a5ad69e, 0x5068f5ff), TOBN(0xf31435fc, 0xdaff6b06),
+           TOBN(0xae549a5b, 0xd6debff0), TOBN(0x59e5f0b7, 0x75e01331)}},
+         {{TOBN(0x5d492fb8, 0x98559acf), TOBN(0x96018c2e, 0x4db79b50),
+           TOBN(0x55f4a48f, 0x609f66aa), TOBN(0x1943b3af, 0x4900a14f)},
+          {TOBN(0xc22496df, 0x15a40d39), TOBN(0xb2a44684, 0x4c20f7c5),
+           TOBN(0x76a35afa, 0x3b98404c), TOBN(0xbec75725, 0xff5d1b77)}},
+         {{TOBN(0xb67aa163, 0xbea06444), TOBN(0x27e95bb2, 0xf724b6f2),
+           TOBN(0x3c20e3e9, 0xd238c8ab), TOBN(0x1213754e, 0xddd6ae17)},
+          {TOBN(0x8c431020, 0x716e0f74), TOBN(0x6679c82e, 0xffc095c2),
+           TOBN(0x2eb3adf4, 0xd0ac2932), TOBN(0x2cc970d3, 0x01bb7a76)}},
+         {{TOBN(0x70c71f2f, 0x740f0e66), TOBN(0x545c616b, 0x2b6b23cc),
+           TOBN(0x4528cfcb, 0xb40a8bd7), TOBN(0xff839633, 0x2ab27722)},
+          {TOBN(0x049127d9, 0x025ac99a), TOBN(0xd314d4a0, 0x2b63e33b),
+           TOBN(0xc8c310e7, 0x28d84519), TOBN(0x0fcb8983, 0xb3bc84ba)}},
+         {{TOBN(0x2cc52261, 0x38634818), TOBN(0x501814f4, 0xb44c2e0b),
+           TOBN(0xf7e181aa, 0x54dfdba3), TOBN(0xcfd58ff0, 0xe759718c)},
+          {TOBN(0xf90cdb14, 0xd3b507a8), TOBN(0x57bd478e, 0xc50bdad8),
+           TOBN(0x29c197e2, 0x50e5f9aa), TOBN(0x4db6eef8, 0xe40bc855)}},
+         {{TOBN(0x2cc8f21a, 0xd1fc0654), TOBN(0xc71cc963, 0x81269d73),
+           TOBN(0xecfbb204, 0x077f49f9), TOBN(0xdde92571, 0xca56b793)},
+          {TOBN(0x9abed6a3, 0xf97ad8f7), TOBN(0xe6c19d3f, 0x924de3bd),
+           TOBN(0x8dce92f4, 0xa140a800), TOBN(0x85f44d1e, 0x1337af07)}},
+         {{TOBN(0x5953c08b, 0x09d64c52), TOBN(0xa1b5e49f, 0xf5df9749),
+           TOBN(0x336a8fb8, 0x52735f7d), TOBN(0xb332b6db, 0x9add676b)},
+          {TOBN(0x558b88a0, 0xb4511aa4), TOBN(0x09788752, 0xdbd5cc55),
+           TOBN(0x16b43b9c, 0xd8cd52bd), TOBN(0x7f0bc5a0, 0xc2a2696b)}},
+         {{TOBN(0x146e12d4, 0xc11f61ef), TOBN(0x9ce10754, 0x3a83e79e),
+           TOBN(0x08ec73d9, 0x6cbfca15), TOBN(0x09ff29ad, 0x5b49653f)},
+          {TOBN(0xe31b72bd, 0xe7da946e), TOBN(0xebf9eb3b, 0xee80a4f2),
+           TOBN(0xd1aabd08, 0x17598ce4), TOBN(0x18b5fef4, 0x53f37e80)}},
+         {{TOBN(0xd5d5cdd3, 0x5958cd79), TOBN(0x3580a1b5, 0x1d373114),
+           TOBN(0xa36e4c91, 0xfa935726), TOBN(0xa38c534d, 0xef20d760)},
+          {TOBN(0x7088e40a, 0x2ff5845b), TOBN(0xe5bb40bd, 0xbd78177f),
+           TOBN(0x4f06a7a8, 0x857f9920), TOBN(0xe3cc3e50, 0xe968f05d)}},
+         {{TOBN(0x1d68b7fe, 0xe5682d26), TOBN(0x5206f76f, 0xaec7f87c),
+           TOBN(0x41110530, 0x041951ab), TOBN(0x58ec52c1, 0xd4b5a71a)},
+          {TOBN(0xf3488f99, 0x0f75cf9a), TOBN(0xf411951f, 0xba82d0d5),
+           TOBN(0x27ee75be, 0x618895ab), TOBN(0xeae060d4, 0x6d8aab14)}},
+         {{TOBN(0x9ae1df73, 0x7fb54dc2), TOBN(0x1f3e391b, 0x25963649),
+           TOBN(0x242ec32a, 0xfe055081), TOBN(0x5bd450ef, 0x8491c9bd)},
+          {TOBN(0x367efc67, 0x981eb389), TOBN(0xed7e1928, 0x3a0550d5),
+           TOBN(0x362e776b, 0xab3ce75c), TOBN(0xe890e308, 0x1f24c523)}},
+         {{TOBN(0xb961b682, 0xfeccef76), TOBN(0x8b8e11f5, 0x8bba6d92),
+           TOBN(0x8f2ccc4c, 0x2b2375c4), TOBN(0x0d7f7a52, 0xe2f86cfa)},
+          {TOBN(0xfd94d30a, 0x9efe5633), TOBN(0x2d8d246b, 0x5451f934),
+           TOBN(0x2234c6e3, 0x244e6a00), TOBN(0xde2b5b0d, 0xddec8c50)}},
+         {{TOBN(0x2ce53c5a, 0xbf776f5b), TOBN(0x6f724071, 0x60357b05),
+           TOBN(0xb2593717, 0x71bf3f7a), TOBN(0x87d2501c, 0x440c4a9f)},
+          {TOBN(0x440552e1, 0x87b05340), TOBN(0xb7bf7cc8, 0x21624c32),
+           TOBN(0x4155a6ce, 0x22facddb), TOBN(0x5a4228cb, 0x889837ef)}},
+         {{TOBN(0xef87d6d6, 0xfd4fd671), TOBN(0xa233687e, 0xc2daa10e),
+           TOBN(0x75622244, 0x03c0eb96), TOBN(0x7632d184, 0x8bf19be6)},
+          {TOBN(0x05d0f8e9, 0x40735ff4), TOBN(0x3a3e6e13, 0xc00931f1),
+           TOBN(0x31ccde6a, 0xdafe3f18), TOBN(0xf381366a, 0xcfe51207)}},
+         {{TOBN(0x24c222a9, 0x60167d92), TOBN(0x62f9d6f8, 0x7529f18c),
+           TOBN(0x412397c0, 0x0353b114), TOBN(0x334d89dc, 0xef808043)},
+          {TOBN(0xd9ec63ba, 0x2a4383ce), TOBN(0xcec8e937, 0x5cf92ba0),
+           TOBN(0xfb8b4288, 0xc8be74c0), TOBN(0x67d6912f, 0x105d4391)}},
+         {{TOBN(0x7b996c46, 0x1b913149), TOBN(0x36aae2ef, 0x3a4e02da),
+           TOBN(0xb68aa003, 0x972de594), TOBN(0x284ec70d, 0x4ec6d545)},
+          {TOBN(0xf3d2b2d0, 0x61391d54), TOBN(0x69c5d5d6, 0xfe114e92),
+           TOBN(0xbe0f00b5, 0xb4482dff), TOBN(0xe1596fa5, 0xf5bf33c5)}},
+         {{TOBN(0x10595b56, 0x96a71cba), TOBN(0x944938b2, 0xfdcadeb7),
+           TOBN(0xa282da4c, 0xfccd8471), TOBN(0x98ec05f3, 0x0d37bfe1)},
+          {TOBN(0xe171ce1b, 0x0698304a), TOBN(0x2d691444, 0x21bdf79b),
+           TOBN(0xd0cd3b74, 0x1b21dec1), TOBN(0x712ecd8b, 0x16a15f71)}},
+         {{TOBN(0x8d4c00a7, 0x00fd56e1), TOBN(0x02ec9692, 0xf9527c18),
+           TOBN(0x21c44937, 0x4a3e42e1), TOBN(0x9176fbab, 0x1392ae0a)},
+          {TOBN(0x8726f1ba, 0x44b7b618), TOBN(0xb4d7aae9, 0xf1de491c),
+           TOBN(0xf91df7b9, 0x07b582c0), TOBN(0x7e116c30, 0xef60aa3a)}},
+         {{TOBN(0x99270f81, 0x466265d7), TOBN(0xb15b6fe2, 0x4df7adf0),
+           TOBN(0xfe33b2d3, 0xf9738f7f), TOBN(0x48553ab9, 0xd6d70f95)},
+          {TOBN(0x2cc72ac8, 0xc21e94db), TOBN(0x795ac38d, 0xbdc0bbee),
+           TOBN(0x0a1be449, 0x2e40478f), TOBN(0x81bd3394, 0x052bde55)}},
+         {{TOBN(0x63c8dbe9, 0x56b3c4f2), TOBN(0x017a99cf, 0x904177cc),
+           TOBN(0x947bbddb, 0x4d010fc1), TOBN(0xacf9b00b, 0xbb2c9b21)},
+          {TOBN(0x2970bc8d, 0x47173611), TOBN(0x1a4cbe08, 0xac7d756f),
+           TOBN(0x06d9f4aa, 0x67d541a2), TOBN(0xa3e8b689, 0x59c2cf44)}},
+         {{TOBN(0xaad066da, 0x4d88f1dd), TOBN(0xc604f165, 0x7ad35dea),
+           TOBN(0x7edc0720, 0x4478ca67), TOBN(0xa10dfae0, 0xba02ce06)},
+          {TOBN(0xeceb1c76, 0xaf36f4e4), TOBN(0x994b2292, 0xaf3f8f48),
+           TOBN(0xbf9ed77b, 0x77c8a68c), TOBN(0x74f544ea, 0x51744c9d)}},
+         {{TOBN(0x82d05bb9, 0x8113a757), TOBN(0x4ef2d2b4, 0x8a9885e4),
+           TOBN(0x1e332be5, 0x1aa7865f), TOBN(0x22b76b18, 0x290d1a52)},
+          {TOBN(0x308a2310, 0x44351683), TOBN(0x9d861896, 0xa3f22840),
+           TOBN(0x5959ddcd, 0x841ed947), TOBN(0x0def0c94, 0x154b73bf)}},
+         {{TOBN(0xf0105417, 0x4c7c15e0), TOBN(0x539bfb02, 0x3a277c32),
+           TOBN(0xe699268e, 0xf9dccf5f), TOBN(0x9f5796a5, 0x0247a3bd)},
+          {TOBN(0x8b839de8, 0x4f157269), TOBN(0xc825c1e5, 0x7a30196b),
+           TOBN(0x6ef0aabc, 0xdc8a5a91), TOBN(0xf4a8ce6c, 0x498b7fe6)}},
+         {{TOBN(0x1cce35a7, 0x70cbac78), TOBN(0x83488e9b, 0xf6b23958),
+           TOBN(0x0341a070, 0xd76cb011), TOBN(0xda6c9d06, 0xae1b2658)},
+          {TOBN(0xb701fb30, 0xdd648c52), TOBN(0x994ca02c, 0x52fb9fd1),
+           TOBN(0x06933117, 0x6f563086), TOBN(0x3d2b8100, 0x17856bab)}},
+         {{TOBN(0xe89f48c8, 0x5963a46e), TOBN(0x658ab875, 0xa99e61c7),
+           TOBN(0x6e296f87, 0x4b8517b4), TOBN(0x36c4fcdc, 0xfc1bc656)},
+          {TOBN(0xde5227a1, 0xa3906def), TOBN(0x9fe95f57, 0x62418945),
+           TOBN(0x20c91e81, 0xfdd96cde), TOBN(0x5adbe47e, 0xda4480de)}},
+         {{TOBN(0xa009370f, 0x396de2b6), TOBN(0x98583d4b, 0xf0ecc7bd),
+           TOBN(0xf44f6b57, 0xe51d0672), TOBN(0x03d6b078, 0x556b1984)},
+          {TOBN(0x27dbdd93, 0xb0b64912), TOBN(0x9b3a3434, 0x15687b09),
+           TOBN(0x0dba6461, 0x51ec20a9), TOBN(0xec93db7f, 0xff28187c)}},
+         {{TOBN(0x00ff8c24, 0x66e48bdd), TOBN(0x2514f2f9, 0x11ccd78e),
+           TOBN(0xeba11f4f, 0xe1250603), TOBN(0x8a22cd41, 0x243fa156)},
+          {TOBN(0xa4e58df4, 0xb283e4c6), TOBN(0x78c29859, 0x8b39783f),
+           TOBN(0x5235aee2, 0xa5259809), TOBN(0xc16284b5, 0x0e0227dd)}},
+         {{TOBN(0xa5f57916, 0x1338830d), TOBN(0x6d4b8a6b, 0xd2123fca),
+           TOBN(0x236ea68a, 0xf9c546f8), TOBN(0xc1d36873, 0xfa608d36)},
+          {TOBN(0xcd76e495, 0x8d436d13), TOBN(0xd4d9c221, 0x8fb080af),
+           TOBN(0x665c1728, 0xe8ad3fb5), TOBN(0xcf1ebe4d, 0xb3d572e0)}},
+         {{TOBN(0xa7a8746a, 0x584c5e20), TOBN(0x267e4ea1, 0xb9dc7035),
+           TOBN(0x593a15cf, 0xb9548c9b), TOBN(0x5e6e2135, 0x4bd012f3)},
+          {TOBN(0xdf31cc6a, 0x8c8f936e), TOBN(0x8af84d04, 0xb5c241dc),
+           TOBN(0x63990a6f, 0x345efb86), TOBN(0x6fef4e61, 0xb9b962cb)}}},
+        {{{TOBN(0xf6368f09, 0x25722608), TOBN(0x131260db, 0x131cf5c6),
+           TOBN(0x40eb353b, 0xfab4f7ac), TOBN(0x85c78880, 0x37eee829)},
+          {TOBN(0x4c1581ff, 0xc3bdf24e), TOBN(0x5bff75cb, 0xf5c3c5a8),
+           TOBN(0x35e8c83f, 0xa14e6f40), TOBN(0xb81d1c0f, 0x0295e0ca)}},
+         {{TOBN(0xfcde7cc8, 0xf43a730f), TOBN(0xe89b6f3c, 0x33ab590e),
+           TOBN(0xc823f529, 0xad03240b), TOBN(0x82b79afe, 0x98bea5db)},
+          {TOBN(0x568f2856, 0x962fe5de), TOBN(0x0c590adb, 0x60c591f3),
+           TOBN(0x1fc74a14, 0x4a28a858), TOBN(0x3b662498, 0xb3203f4c)}},
+         {{TOBN(0x91e3cf0d, 0x6c39765a), TOBN(0xa2db3acd, 0xac3cca0b),
+           TOBN(0x288f2f08, 0xcb953b50), TOBN(0x2414582c, 0xcf43cf1a)},
+          {TOBN(0x8dec8bbc, 0x60eee9a8), TOBN(0x54c79f02, 0x729aa042),
+           TOBN(0xd81cd5ec, 0x6532f5d5), TOBN(0xa672303a, 0xcf82e15f)}},
+         {{TOBN(0x376aafa8, 0x719c0563), TOBN(0xcd8ad2dc, 0xbc5fc79f),
+           TOBN(0x303fdb9f, 0xcb750cd3), TOBN(0x14ff052f, 0x4418b08e)},
+          {TOBN(0xf75084cf, 0x3e2d6520), TOBN(0x7ebdf0f8, 0x144ed509),
+           TOBN(0xf43bf0f2, 0xd3f25b98), TOBN(0x86ad71cf, 0xa354d837)}},
+         {{TOBN(0xb827fe92, 0x26f43572), TOBN(0xdfd3ab5b, 0x5d824758),
+           TOBN(0x315dd23a, 0x539094c1), TOBN(0x85c0e37a, 0x66623d68)},
+          {TOBN(0x575c7972, 0x7be19ae0), TOBN(0x616a3396, 0xdf0d36b5),
+           TOBN(0xa1ebb3c8, 0x26b1ff7e), TOBN(0x635b9485, 0x140ad453)}},
+         {{TOBN(0x92bf3cda, 0xda430c0b), TOBN(0x4702850e, 0x3a96dac6),
+           TOBN(0xc91cf0a5, 0x15ac326a), TOBN(0x95de4f49, 0xab8c25e4)},
+          {TOBN(0xb01bad09, 0xe265c17c), TOBN(0x24e45464, 0x087b3881),
+           TOBN(0xd43e583c, 0xe1fac5ca), TOBN(0xe17cb318, 0x6ead97a6)}},
+         {{TOBN(0x6cc39243, 0x74dcec46), TOBN(0x33cfc02d, 0x54c2b73f),
+           TOBN(0x82917844, 0xf26cd99c), TOBN(0x8819dd95, 0xd1773f89)},
+          {TOBN(0x09572aa6, 0x0871f427), TOBN(0x8e0cf365, 0xf6f01c34),
+           TOBN(0x7fa52988, 0xbff1f5af), TOBN(0x4eb357ea, 0xe75e8e50)}},
+         {{TOBN(0xd9d0c8c4, 0x868af75d), TOBN(0xd7325cff, 0x45c8c7ea),
+           TOBN(0xab471996, 0xcc81ecb0), TOBN(0xff5d55f3, 0x611824ed)},
+          {TOBN(0xbe314541, 0x1977a0ee), TOBN(0x5085c4c5, 0x722038c6),
+           TOBN(0x2d5335bf, 0xf94bb495), TOBN(0x894ad8a6, 0xc8e2a082)}},
+         {{TOBN(0x5c3e2341, 0xada35438), TOBN(0xf4a9fc89, 0x049b8c4e),
+           TOBN(0xbeeb355a, 0x9f17cf34), TOBN(0x3f311e0e, 0x6c91fe10)},
+          {TOBN(0xc2d20038, 0x92ab9891), TOBN(0x257bdcc1, 0x3e8ce9a9),
+           TOBN(0x1b2d9789, 0x88c53bee), TOBN(0x927ce89a, 0xcdba143a)}},
+         {{TOBN(0xb0a32cca, 0x523db280), TOBN(0x5c889f8a, 0x50d43783),
+           TOBN(0x503e04b3, 0x4897d16f), TOBN(0x8cdb6e78, 0x08f5f2e8)},
+          {TOBN(0x6ab91cf0, 0x179c8e74), TOBN(0xd8874e52, 0x48211d60),
+           TOBN(0xf948d4d5, 0xea851200), TOBN(0x4076d41e, 0xe6f9840a)}},
+         {{TOBN(0xc20e263c, 0x47b517ea), TOBN(0x79a448fd, 0x30685e5e),
+           TOBN(0xe55f6f78, 0xf90631a0), TOBN(0x88a790b1, 0xa79e6346)},
+          {TOBN(0x62160c7d, 0x80969fe8), TOBN(0x54f92fd4, 0x41491bb9),
+           TOBN(0xa6645c23, 0x5c957526), TOBN(0xf44cc5ae, 0xbea3ce7b)}},
+         {{TOBN(0xf7628327, 0x8b1e68b7), TOBN(0xc731ad7a, 0x303f29d3),
+           TOBN(0xfe5a9ca9, 0x57d03ecb), TOBN(0x96c0d50c, 0x41bc97a7)},
+          {TOBN(0xc4669fe7, 0x9b4f7f24), TOBN(0xfdd781d8, 0x3d9967ef),
+           TOBN(0x7892c7c3, 0x5d2c208d), TOBN(0x8bf64f7c, 0xae545cb3)}},
+         {{TOBN(0xc01f862c, 0x467be912), TOBN(0xf4c85ee9, 0xc73d30cc),
+           TOBN(0x1fa6f4be, 0x6ab83ec7), TOBN(0xa07a3c1c, 0x4e3e3cf9)},
+          {TOBN(0x87f8ef45, 0x0c00beb3), TOBN(0x30e2c2b3, 0x000d4c3e),
+           TOBN(0x1aa00b94, 0xfe08bf5b), TOBN(0x32c133aa, 0x9224ef52)}},
+         {{TOBN(0x38df16bb, 0x32e5685d), TOBN(0x68a9e069, 0x58e6f544),
+           TOBN(0x495aaff7, 0xcdc5ebc6), TOBN(0xf894a645, 0x378b135f)},
+          {TOBN(0xf316350a, 0x09e27ecf), TOBN(0xeced201e, 0x58f7179d),
+           TOBN(0x2eec273c, 0xe97861ba), TOBN(0x47ec2cae, 0xd693be2e)}},
+         {{TOBN(0xfa4c97c4, 0xf68367ce), TOBN(0xe4f47d0b, 0xbe5a5755),
+           TOBN(0x17de815d, 0xb298a979), TOBN(0xd7eca659, 0xc177dc7d)},
+          {TOBN(0x20fdbb71, 0x49ded0a3), TOBN(0x4cb2aad4, 0xfb34d3c5),
+           TOBN(0x2cf31d28, 0x60858a33), TOBN(0x3b6873ef, 0xa24aa40f)}},
+         {{TOBN(0x540234b2, 0x2c11bb37), TOBN(0x2d0366dd, 0xed4c74a3),
+           TOBN(0xf9a968da, 0xeec5f25d), TOBN(0x36601068, 0x67b63142)},
+          {TOBN(0x07cd6d2c, 0x68d7b6d4), TOBN(0xa8f74f09, 0x0c842942),
+           TOBN(0xe2751404, 0x7768b1ee), TOBN(0x4b5f7e89, 0xfe62aee4)}},
+         {{TOBN(0xc6a77177, 0x89070d26), TOBN(0xa1f28e4e, 0xdd1c8bc7),
+           TOBN(0xea5f4f06, 0x469e1f17), TOBN(0x78fc242a, 0xfbdb78e0)},
+          {TOBN(0xc9c7c592, 0x8b0588f1), TOBN(0xb6b7a0fd, 0x1535921e),
+           TOBN(0xcc5bdb91, 0xbde5ae35), TOBN(0xb42c485e, 0x12ff1864)}},
+         {{TOBN(0xa1113e13, 0xdbab98aa), TOBN(0xde9d469b, 0xa17b1024),
+           TOBN(0x23f48b37, 0xc0462d3a), TOBN(0x3752e537, 0x7c5c078d)},
+          {TOBN(0xe3a86add, 0x15544eb9), TOBN(0xf013aea7, 0x80fba279),
+           TOBN(0x8b5bb76c, 0xf22001b5), TOBN(0xe617ba14, 0xf02891ab)}},
+         {{TOBN(0xd39182a6, 0x936219d3), TOBN(0x5ce1f194, 0xae51cb19),
+           TOBN(0xc78f8598, 0xbf07a74c), TOBN(0x6d7158f2, 0x22cbf1bc)},
+          {TOBN(0x3b846b21, 0xe300ce18), TOBN(0x35fba630, 0x2d11275d),
+           TOBN(0x5fe25c36, 0xa0239b9b), TOBN(0xd8beb35d, 0xdf05d940)}},
+         {{TOBN(0x4db02bb0, 0x1f7e320d), TOBN(0x0641c364, 0x6da320ea),
+           TOBN(0x6d95fa5d, 0x821389a3), TOBN(0x92699748, 0x8fcd8e3d)},
+          {TOBN(0x316fef17, 0xceb6c143), TOBN(0x67fcb841, 0xd933762b),
+           TOBN(0xbb837e35, 0x118b17f8), TOBN(0x4b92552f, 0x9fd24821)}},
+         {{TOBN(0xae6bc70e, 0x46aca793), TOBN(0x1cf0b0e4, 0xe579311b),
+           TOBN(0x8dc631be, 0x5802f716), TOBN(0x099bdc6f, 0xbddbee4d)},
+          {TOBN(0xcc352bb2, 0x0caf8b05), TOBN(0xf74d505a, 0x72d63df2),
+           TOBN(0xb9876d4b, 0x91c4f408), TOBN(0x1ce18473, 0x9e229b2d)}},
+         {{TOBN(0x49507597, 0x83abdb4a), TOBN(0x850fbcb6, 0xdee84b18),
+           TOBN(0x6325236e, 0x609e67dc), TOBN(0x04d831d9, 0x9336c6d8)},
+          {TOBN(0x8deaae3b, 0xfa12d45d), TOBN(0xe425f8ce, 0x4746e246),
+           TOBN(0x8004c175, 0x24f5f31e), TOBN(0xaca16d8f, 0xad62c3b7)}},
+         {{TOBN(0x0dc15a6a, 0x9152f934), TOBN(0xf1235e5d, 0xed0e12c1),
+           TOBN(0xc33c06ec, 0xda477dac), TOBN(0x76be8732, 0xb2ea0006)},
+          {TOBN(0xcf3f7831, 0x0c0cd313), TOBN(0x3c524553, 0xa614260d),
+           TOBN(0x31a756f8, 0xcab22d15), TOBN(0x03ee10d1, 0x77827a20)}},
+         {{TOBN(0xd1e059b2, 0x1994ef20), TOBN(0x2a653b69, 0x638ae318),
+           TOBN(0x70d5eb58, 0x2f699010), TOBN(0x279739f7, 0x09f5f84a)},
+          {TOBN(0x5da4663c, 0x8b799336), TOBN(0xfdfdf14d, 0x203c37eb),
+           TOBN(0x32d8a9dc, 0xa1dbfb2d), TOBN(0xab40cff0, 0x77d48f9b)}},
+         {{TOBN(0xc018b383, 0xd20b42d5), TOBN(0xf9a810ef, 0x9f78845f),
+           TOBN(0x40af3753, 0xbdba9df0), TOBN(0xb90bdcfc, 0x131dfdf9)},
+          {TOBN(0x18720591, 0xf01ab782), TOBN(0xc823f211, 0x6af12a88),
+           TOBN(0xa51b80f3, 0x0dc14401), TOBN(0xde248f77, 0xfb2dfbe3)}},
+         {{TOBN(0xef5a44e5, 0x0cafe751), TOBN(0x73997c9c, 0xd4dcd221),
+           TOBN(0x32fd86d1, 0xde854024), TOBN(0xd5b53adc, 0xa09b84bb)},
+          {TOBN(0x008d7a11, 0xdcedd8d1), TOBN(0x406bd1c8, 0x74b32c84),
+           TOBN(0x5d4472ff, 0x05dde8b1), TOBN(0x2e25f2cd, 0xfce2b32f)}},
+         {{TOBN(0xbec0dd5e, 0x29dfc254), TOBN(0x4455fcf6, 0x2b98b267),
+           TOBN(0x0b4d43a5, 0xc72df2ad), TOBN(0xea70e6be, 0x48a75397)},
+          {TOBN(0x2aad6169, 0x5820f3bf), TOBN(0xf410d2dd, 0x9e37f68f),
+           TOBN(0x70fb7dba, 0x7be5ac83), TOBN(0x636bb645, 0x36ec3eec)}},
+         {{TOBN(0x27104ea3, 0x9754e21c), TOBN(0xbc87a3e6, 0x8d63c373),
+           TOBN(0x483351d7, 0x4109db9a), TOBN(0x0fa724e3, 0x60134da7)},
+          {TOBN(0x9ff44c29, 0xb0720b16), TOBN(0x2dd0cf13, 0x06aceead),
+           TOBN(0x5942758c, 0xe26929a6), TOBN(0x96c5db92, 0xb766a92b)}},
+         {{TOBN(0xcec7d4c0, 0x5f18395e), TOBN(0xd3f22744, 0x1f80d032),
+           TOBN(0x7a68b37a, 0xcb86075b), TOBN(0x074764dd, 0xafef92db)},
+          {TOBN(0xded1e950, 0x7bc7f389), TOBN(0xc580c850, 0xb9756460),
+           TOBN(0xaeeec2a4, 0x7da48157), TOBN(0x3f0b4e7f, 0x82c587b3)}},
+         {{TOBN(0x231c6de8, 0xa9f19c53), TOBN(0x5717bd73, 0x6974e34e),
+           TOBN(0xd9e1d216, 0xf1508fa9), TOBN(0x9f112361, 0xdadaa124)},
+          {TOBN(0x80145e31, 0x823b7348), TOBN(0x4dd8f0d5, 0xac634069),
+           TOBN(0xe3d82fc7, 0x2297c258), TOBN(0x276fcfee, 0x9cee7431)}},
+         {{TOBN(0x8eb61b5e, 0x2bc0aea9), TOBN(0x4f668fd5, 0xde329431),
+           TOBN(0x03a32ab1, 0x38e4b87e), TOBN(0xe1374517, 0x73d0ef0b)},
+          {TOBN(0x1a46f7e6, 0x853ac983), TOBN(0xc3bdf42e, 0x68e78a57),
+           TOBN(0xacf20785, 0x2ea96dd1), TOBN(0xa10649b9, 0xf1638460)}},
+         {{TOBN(0xf2369f0b, 0x879fbbed), TOBN(0x0ff0ae86, 0xda9d1869),
+           TOBN(0x5251d759, 0x56766f45), TOBN(0x4984d8c0, 0x2be8d0fc)},
+          {TOBN(0x7ecc95a6, 0xd21008f0), TOBN(0x29bd54a0, 0x3a1a1c49),
+           TOBN(0xab9828c5, 0xd26c50f3), TOBN(0x32c0087c, 0x51d0d251)}},
+         {{TOBN(0x9bac3ce6, 0x0c1cdb26), TOBN(0xcd94d947, 0x557ca205),
+           TOBN(0x1b1bd598, 0x9db1fdcd), TOBN(0x0eda0108, 0xa3d8b149)},
+          {TOBN(0x95066610, 0x56152fcc), TOBN(0xc2f037e6, 0xe7192b33),
+           TOBN(0xdeffb41a, 0xc92e05a4), TOBN(0x1105f6c2, 0xc2f6c62e)}},
+         {{TOBN(0x68e73500, 0x8733913c), TOBN(0xcce86163, 0x3f3adc40),
+           TOBN(0xf407a942, 0x38a278e9), TOBN(0xd13c1b9d, 0x2ab21292)},
+          {TOBN(0x93ed7ec7, 0x1c74cf5c), TOBN(0x8887dc48, 0xf1a4c1b4),
+           TOBN(0x3830ff30, 0x4b3a11f1), TOBN(0x358c5a3c, 0x58937cb6)}},
+         {{TOBN(0x027dc404, 0x89022829), TOBN(0x40e93977, 0x3b798f79),
+           TOBN(0x90ad3337, 0x38be6ead), TOBN(0x9c23f6bc, 0xf34c0a5d)},
+          {TOBN(0xd1711a35, 0xfbffd8bb), TOBN(0x60fcfb49, 0x1949d3dd),
+           TOBN(0x09c8ef4b, 0x7825d93a), TOBN(0x24233cff, 0xa0a8c968)}},
+         {{TOBN(0x67ade46c, 0xe6d982af), TOBN(0xebb6bf3e, 0xe7544d7c),
+           TOBN(0xd6b9ba76, 0x3d8bd087), TOBN(0x46fe382d, 0x4dc61280)},
+          {TOBN(0xbd39a7e8, 0xb5bdbd75), TOBN(0xab381331, 0xb8f228fe),
+           TOBN(0x0709a77c, 0xce1c4300), TOBN(0x6a247e56, 0xf337ceac)}},
+         {{TOBN(0x8f34f21b, 0x636288be), TOBN(0x9dfdca74, 0xc8a7c305),
+           TOBN(0x6decfd1b, 0xea919e04), TOBN(0xcdf2688d, 0x8e1991f8)},
+          {TOBN(0xe607df44, 0xd0f8a67e), TOBN(0xd985df4b, 0x0b58d010),
+           TOBN(0x57f834c5, 0x0c24f8f4), TOBN(0xe976ef56, 0xa0bf01ae)}},
+         {{TOBN(0x536395ac, 0xa1c32373), TOBN(0x351027aa, 0x734c0a13),
+           TOBN(0xd2f1b5d6, 0x5e6bd5bc), TOBN(0x2b539e24, 0x223debed)},
+          {TOBN(0xd4994cec, 0x0eaa1d71), TOBN(0x2a83381d, 0x661dcf65),
+           TOBN(0x5f1aed2f, 0x7b54c740), TOBN(0x0bea3fa5, 0xd6dda5ee)}},
+         {{TOBN(0x9d4fb684, 0x36cc6134), TOBN(0x8eb9bbf3, 0xc0a443dd),
+           TOBN(0xfc500e2e, 0x383b7d2a), TOBN(0x7aad621c, 0x5b775257)},
+          {TOBN(0x69284d74, 0x0a8f7cc0), TOBN(0xe820c2ce, 0x07562d65),
+           TOBN(0xbf9531b9, 0x499758ee), TOBN(0x73e95ca5, 0x6ee0cc2d)}},
+         {{TOBN(0xf61790ab, 0xfbaf50a5), TOBN(0xdf55e76b, 0x684e0750),
+           TOBN(0xec516da7, 0xf176b005), TOBN(0x575553bb, 0x7a2dddc7)},
+          {TOBN(0x37c87ca3, 0x553afa73), TOBN(0x315f3ffc, 0x4d55c251),
+           TOBN(0xe846442a, 0xaf3e5d35), TOBN(0x61b91149, 0x6495ff28)}},
+         {{TOBN(0x23cc95d3, 0xfa326dc3), TOBN(0x1df4da1f, 0x18fc2cea),
+           TOBN(0x24bf9adc, 0xd0a37d59), TOBN(0xb6710053, 0x320d6e1e)},
+          {TOBN(0x96f9667e, 0x618344d1), TOBN(0xcc7ce042, 0xa06445af),
+           TOBN(0xa02d8514, 0xd68dbc3a), TOBN(0x4ea109e4, 0x280b5a5b)}},
+         {{TOBN(0x5741a7ac, 0xb40961bf), TOBN(0x4ada5937, 0x6aa56bfa),
+           TOBN(0x7feb9145, 0x02b765d1), TOBN(0x561e97be, 0xe6ad1582)},
+          {TOBN(0xbbc4a5b6, 0xda3982f5), TOBN(0x0c2659ed, 0xb546f468),
+           TOBN(0xb8e7e6aa, 0x59612d20), TOBN(0xd83dfe20, 0xac19e8e0)}},
+         {{TOBN(0x8530c45f, 0xb835398c), TOBN(0x6106a8bf, 0xb38a41c2),
+           TOBN(0x21e8f9a6, 0x35f5dcdb), TOBN(0x39707137, 0xcae498ed)},
+          {TOBN(0x70c23834, 0xd8249f00), TOBN(0x9f14b58f, 0xab2537a0),
+           TOBN(0xd043c365, 0x5f61c0c2), TOBN(0xdc5926d6, 0x09a194a7)}},
+         {{TOBN(0xddec0339, 0x8e77738a), TOBN(0xd07a63ef, 0xfba46426),
+           TOBN(0x2e58e79c, 0xee7f6e86), TOBN(0xe59b0459, 0xff32d241)},
+          {TOBN(0xc5ec84e5, 0x20fa0338), TOBN(0x97939ac8, 0xeaff5ace),
+           TOBN(0x0310a4e3, 0xb4a38313), TOBN(0x9115fba2, 0x8f9d9885)}},
+         {{TOBN(0x8dd710c2, 0x5fadf8c3), TOBN(0x66be38a2, 0xce19c0e2),
+           TOBN(0xd42a279c, 0x4cfe5022), TOBN(0x597bb530, 0x0e24e1b8)},
+          {TOBN(0x3cde86b7, 0xc153ca7f), TOBN(0xa8d30fb3, 0x707d63bd),
+           TOBN(0xac905f92, 0xbd60d21e), TOBN(0x98e7ffb6, 0x7b9a54ab)}},
+         {{TOBN(0xd7147df8, 0xe9726a30), TOBN(0xb5e216ff, 0xafce3533),
+           TOBN(0xb550b799, 0x2ff1ec40), TOBN(0x6b613b87, 0xa1e953fd)},
+          {TOBN(0x87b88dba, 0x792d5610), TOBN(0x2ee1270a, 0xa190fbe1),
+           TOBN(0x02f4e2dc, 0x2ef581da), TOBN(0x016530e4, 0xeff82a95)}},
+         {{TOBN(0xcbb93dfd, 0x8fd6ee89), TOBN(0x16d3d986, 0x46848fff),
+           TOBN(0x600eff24, 0x1da47adf), TOBN(0x1b9754a0, 0x0ad47a71)},
+          {TOBN(0x8f9266df, 0x70c33b98), TOBN(0xaadc87ae, 0xdf34186e),
+           TOBN(0x0d2ce8e1, 0x4ad24132), TOBN(0x8a47cbfc, 0x19946eba)}},
+         {{TOBN(0x47feeb66, 0x62b5f3af), TOBN(0xcefab561, 0x0abb3734),
+           TOBN(0x449de60e, 0x19f35cb1), TOBN(0x39f8db14, 0x157f0eb9)},
+          {TOBN(0xffaecc5b, 0x3c61bfd6), TOBN(0xa5a4d41d, 0x41216703),
+           TOBN(0x7f8fabed, 0x224e1cc2), TOBN(0x0d5a8186, 0x871ad953)}},
+         {{TOBN(0xf10774f7, 0xd22da9a9), TOBN(0x45b8a678, 0xcc8a9b0d),
+           TOBN(0xd9c2e722, 0xbdc32cff), TOBN(0xbf71b5f5, 0x337202a5)},
+          {TOBN(0x95c57f2f, 0x69fc4db9), TOBN(0xb6dad34c, 0x765d01e1),
+           TOBN(0x7e0bd13f, 0xcb904635), TOBN(0x61751253, 0x763a588c)}},
+         {{TOBN(0xd85c2997, 0x81af2c2d), TOBN(0xc0f7d9c4, 0x81b9d7da),
+           TOBN(0x838a34ae, 0x08533e8d), TOBN(0x15c4cb08, 0x311d8311)},
+          {TOBN(0x97f83285, 0x8e121e14), TOBN(0xeea7dc1e, 0x85000a5f),
+           TOBN(0x0c6059b6, 0x5d256274), TOBN(0xec9beace, 0xb95075c0)}},
+         {{TOBN(0x173daad7, 0x1df97828), TOBN(0xbf851cb5, 0xa8937877),
+           TOBN(0xb083c594, 0x01646f3c), TOBN(0x3bad30cf, 0x50c6d352)},
+          {TOBN(0xfeb2b202, 0x496bbcea), TOBN(0x3cf9fd4f, 0x18a1e8ba),
+           TOBN(0xd26de7ff, 0x1c066029), TOBN(0x39c81e9e, 0x4e9ed4f8)}},
+         {{TOBN(0xd8be0cb9, 0x7b390d35), TOBN(0x01df2bbd, 0x964aab27),
+           TOBN(0x3e8c1a65, 0xc3ef64f8), TOBN(0x567291d1, 0x716ed1dd)},
+          {TOBN(0x95499c6c, 0x5f5406d3), TOBN(0x71fdda39, 0x5ba8e23f),
+           TOBN(0xcfeb320e, 0xd5096ece), TOBN(0xbe7ba92b, 0xca66dd16)}},
+         {{TOBN(0x4608d36b, 0xc6fb5a7d), TOBN(0xe3eea15a, 0x6d2dd0e0),
+           TOBN(0x75b0a3eb, 0x8f97a36a), TOBN(0xf59814cc, 0x1c83de1e)},
+          {TOBN(0x56c9c5b0, 0x1c33c23f), TOBN(0xa96c1da4, 0x6faa4136),
+           TOBN(0x46bf2074, 0xde316551), TOBN(0x3b866e7b, 0x1f756c8f)}},
+         {{TOBN(0x727727d8, 0x1495ed6b), TOBN(0xb2394243, 0xb682dce7),
+           TOBN(0x8ab8454e, 0x758610f3), TOBN(0xc243ce84, 0x857d72a4)},
+          {TOBN(0x7b320d71, 0xdbbf370f), TOBN(0xff9afa37, 0x78e0f7ca),
+           TOBN(0x0119d1e0, 0xea7b523f), TOBN(0xb997f8cb, 0x058c7d42)}},
+         {{TOBN(0x285bcd2a, 0x37bbb184), TOBN(0x51dcec49, 0xa45d1fa6),
+           TOBN(0x6ade3b64, 0xe29634cb), TOBN(0x080c94a7, 0x26b86ef1)},
+          {TOBN(0xba583db1, 0x2283fbe3), TOBN(0x902bddc8, 0x5a9315ed),
+           TOBN(0x07c1ccb3, 0x86964bec), TOBN(0x78f4eacf, 0xb6258301)}},
+         {{TOBN(0x4bdf3a49, 0x56f90823), TOBN(0xba0f5080, 0x741d777b),
+           TOBN(0x091d71c3, 0xf38bf760), TOBN(0x9633d50f, 0x9b625b02)},
+          {TOBN(0x03ecb743, 0xb8c9de61), TOBN(0xb4751254, 0x5de74720),
+           TOBN(0x9f9defc9, 0x74ce1cb2), TOBN(0x774a4f6a, 0x00bd32ef)}},
+         {{TOBN(0xaca385f7, 0x73848f22), TOBN(0x53dad716, 0xf3f8558e),
+           TOBN(0xab7b34b0, 0x93c471f9), TOBN(0xf530e069, 0x19644bc7)},
+          {TOBN(0x3d9fb1ff, 0xdd59d31a), TOBN(0x4382e0df, 0x08daa795),
+           TOBN(0x165c6f4b, 0xd5cc88d7), TOBN(0xeaa392d5, 0x4a18c900)}},
+         {{TOBN(0x94203c67, 0x648024ee), TOBN(0x188763f2, 0x8c2fabcd),
+           TOBN(0xa80f87ac, 0xbbaec835), TOBN(0x632c96e0, 0xf29d8d54)},
+          {TOBN(0x29b0a60e, 0x4c00a95e), TOBN(0x2ef17f40, 0xe011e9fa),
+           TOBN(0xf6c0e1d1, 0x15b77223), TOBN(0xaaec2c62, 0x14b04e32)}},
+         {{TOBN(0xd35688d8, 0x3d84e58c), TOBN(0x2af5094c, 0x958571db),
+           TOBN(0x4fff7e19, 0x760682a6), TOBN(0x4cb27077, 0xe39a407c)},
+          {TOBN(0x0f59c547, 0x4ff0e321), TOBN(0x169f34a6, 0x1b34c8ff),
+           TOBN(0x2bff1096, 0x52bc1ba7), TOBN(0xa25423b7, 0x83583544)}},
+         {{TOBN(0x5d55d5d5, 0x0ac8b782), TOBN(0xff6622ec, 0x2db3c892),
+           TOBN(0x48fce741, 0x6b8bb642), TOBN(0x31d6998c, 0x69d7e3dc)},
+          {TOBN(0xdbaf8004, 0xcadcaed0), TOBN(0x801b0142, 0xd81d053c),
+           TOBN(0x94b189fc, 0x59630ec6), TOBN(0x120e9934, 0xaf762c8e)}},
+         {{TOBN(0x53a29aa4, 0xfdc6a404), TOBN(0x19d8e01e, 0xa1909948),
+           TOBN(0x3cfcabf1, 0xd7e89681), TOBN(0x3321a50d, 0x4e132d37)},
+          {TOBN(0xd0496863, 0xe9a86111), TOBN(0x8c0cde61, 0x06a3bc65),
+           TOBN(0xaf866c49, 0xfc9f8eef), TOBN(0x2066350e, 0xff7f5141)}},
+         {{TOBN(0x4f8a4689, 0xe56ddfbd), TOBN(0xea1b0c07, 0xfe32983a),
+           TOBN(0x2b317462, 0x873cb8cb), TOBN(0x658deddc, 0x2d93229f)},
+          {TOBN(0x65efaf4d, 0x0f64ef58), TOBN(0xfe43287d, 0x730cc7a8),
+           TOBN(0xaebc0c72, 0x3d047d70), TOBN(0x92efa539, 0xd92d26c9)}},
+         {{TOBN(0x06e78457, 0x94b56526), TOBN(0x415cb80f, 0x0961002d),
+           TOBN(0x89e5c565, 0x76dcb10f), TOBN(0x8bbb6982, 0xff9259fe)},
+          {TOBN(0x4fe8795b, 0x9abc2668), TOBN(0xb5d4f534, 0x1e678fb1),
+           TOBN(0x6601f3be, 0x7b7da2b9), TOBN(0x98da59e2, 0xa13d6805)}},
+         {{TOBN(0x190d8ea6, 0x01799a52), TOBN(0xa20cec41, 0xb86d2952),
+           TOBN(0x3062ffb2, 0x7fff2a7c), TOBN(0x741b32e5, 0x79f19d37)},
+          {TOBN(0xf80d8181, 0x4eb57d47), TOBN(0x7a2d0ed4, 0x16aef06b),
+           TOBN(0x09735fb0, 0x1cecb588), TOBN(0x1641caaa, 0xc6061f5b)}}},
+        {{{TOBN(0x7f99824f, 0x20151427), TOBN(0x206828b6, 0x92430206),
+           TOBN(0xaa9097d7, 0xe1112357), TOBN(0xacf9a2f2, 0x09e414ec)},
+          {TOBN(0xdbdac9da, 0x27915356), TOBN(0x7e0734b7, 0x001efee3),
+           TOBN(0x54fab5bb, 0xd2b288e2), TOBN(0x4c630fc4, 0xf62dd09c)}},
+         {{TOBN(0x8537107a, 0x1ac2703b), TOBN(0xb49258d8, 0x6bc857b5),
+           TOBN(0x57df14de, 0xbcdaccd1), TOBN(0x24ab68d7, 0xc4ae8529)},
+          {TOBN(0x7ed8b5d4, 0x734e59d0), TOBN(0x5f8740c8, 0xc495cc80),
+           TOBN(0x84aedd5a, 0x291db9b3), TOBN(0x80b360f8, 0x4fb995be)}},
+         {{TOBN(0xae915f5d, 0x5fa067d1), TOBN(0x4134b57f, 0x9668960c),
+           TOBN(0xbd3656d6, 0xa48edaac), TOBN(0xdac1e3e4, 0xfc1d7436)},
+          {TOBN(0x674ff869, 0xd81fbb26), TOBN(0x449ed3ec, 0xb26c33d4),
+           TOBN(0x85138705, 0xd94203e8), TOBN(0xccde538b, 0xbeeb6f4a)}},
+         {{TOBN(0x55d5c68d, 0xa61a76fa), TOBN(0x598b441d, 0xca1554dc),
+           TOBN(0xd39923b9, 0x773b279c), TOBN(0x33331d3c, 0x36bf9efc)},
+          {TOBN(0x2d4c848e, 0x298de399), TOBN(0xcfdb8e77, 0xa1a27f56),
+           TOBN(0x94c855ea, 0x57b8ab70), TOBN(0xdcdb9dae, 0x6f7879ba)}},
+         {{TOBN(0x7bdff8c2, 0x019f2a59), TOBN(0xb3ce5bb3, 0xcb4fbc74),
+           TOBN(0xea907f68, 0x8a9173dd), TOBN(0x6cd3d0d3, 0x95a75439)},
+          {TOBN(0x92ecc4d6, 0xefed021c), TOBN(0x09a9f9b0, 0x6a77339a),
+           TOBN(0x87ca6b15, 0x7188c64a), TOBN(0x10c29968, 0x44899158)}},
+         {{TOBN(0x5859a229, 0xed6e82ef), TOBN(0x16f338e3, 0x65ebaf4e),
+           TOBN(0x0cd31387, 0x5ead67ae), TOBN(0x1c73d228, 0x54ef0bb4)},
+          {TOBN(0x4cb55131, 0x74a5c8c7), TOBN(0x01cd2970, 0x7f69ad6a),
+           TOBN(0xa04d00dd, 0xe966f87e), TOBN(0xd96fe447, 0x0b7b0321)}},
+         {{TOBN(0x342ac06e, 0x88fbd381), TOBN(0x02cd4a84, 0x5c35a493),
+           TOBN(0xe8fa89de, 0x54f1bbcd), TOBN(0x341d6367, 0x2575ed4c)},
+          {TOBN(0xebe357fb, 0xd238202b), TOBN(0x600b4d1a, 0xa984ead9),
+           TOBN(0xc35c9f44, 0x52436ea0), TOBN(0x96fe0a39, 0xa370751b)}},
+         {{TOBN(0x4c4f0736, 0x7f636a38), TOBN(0x9f943fb7, 0x0e76d5cb),
+           TOBN(0xb03510ba, 0xa8b68b8b), TOBN(0xc246780a, 0x9ed07a1f)},
+          {TOBN(0x3c051415, 0x6d549fc2), TOBN(0xc2953f31, 0x607781ca),
+           TOBN(0x955e2c69, 0xd8d95413), TOBN(0xb300fadc, 0x7bd282e3)}},
+         {{TOBN(0x81fe7b50, 0x87e9189f), TOBN(0xdb17375c, 0xf42dda27),
+           TOBN(0x22f7d896, 0xcf0a5904), TOBN(0xa0e57c5a, 0xebe348e6)},
+          {TOBN(0xa61011d3, 0xf40e3c80), TOBN(0xb1189321, 0x8db705c5),
+           TOBN(0x4ed9309e, 0x50fedec3), TOBN(0xdcf14a10, 0x4d6d5c1d)}},
+         {{TOBN(0x056c265b, 0x55691342), TOBN(0xe8e08504, 0x91049dc7),
+           TOBN(0x131329f5, 0xc9bae20a), TOBN(0x96c8b3e8, 0xd9dccdb4)},
+          {TOBN(0x8c5ff838, 0xfb4ee6b4), TOBN(0xfc5a9aeb, 0x41e8ccf0),
+           TOBN(0x7417b764, 0xfae050c6), TOBN(0x0953c3d7, 0x00452080)}},
+         {{TOBN(0x21372682, 0x38dfe7e8), TOBN(0xea417e15, 0x2bb79d4b),
+           TOBN(0x59641f1c, 0x76e7cf2d), TOBN(0x271e3059, 0xea0bcfcc)},
+          {TOBN(0x624c7dfd, 0x7253ecbd), TOBN(0x2f552e25, 0x4fca6186),
+           TOBN(0xcbf84ecd, 0x4d866e9c), TOBN(0x73967709, 0xf68d4610)}},
+         {{TOBN(0xa14b1163, 0xc27901b4), TOBN(0xfd9236e0, 0x899b8bf3),
+           TOBN(0x42b091ec, 0xcbc6da0a), TOBN(0xbb1dac6f, 0x5ad1d297)},
+          {TOBN(0x80e61d53, 0xa91cf76e), TOBN(0x4110a412, 0xd31f1ee7),
+           TOBN(0x2d87c3ba, 0x13efcf77), TOBN(0x1f374bb4, 0xdf450d76)}},
+         {{TOBN(0x5e78e2f2, 0x0d188dab), TOBN(0xe3968ed0, 0xf4b885ef),
+           TOBN(0x46c0568e, 0x7314570f), TOBN(0x31616338, 0x01170521)},
+          {TOBN(0x18e1e7e2, 0x4f0c8afe), TOBN(0x4caa75ff, 0xdeea78da),
+           TOBN(0x82db67f2, 0x7c5d8a51), TOBN(0x36a44d86, 0x6f505370)}},
+         {{TOBN(0xd72c5bda, 0x0333974f), TOBN(0x5db516ae, 0x27a70146),
+           TOBN(0x34705281, 0x210ef921), TOBN(0xbff17a8f, 0x0c9c38e5)},
+          {TOBN(0x78f4814e, 0x12476da1), TOBN(0xc1e16613, 0x33c16980),
+           TOBN(0x9e5b386f, 0x424d4bca), TOBN(0x4c274e87, 0xc85740de)}},
+         {{TOBN(0xb6a9b88d, 0x6c2f5226), TOBN(0x14d1b944, 0x550d7ca8),
+           TOBN(0x580c85fc, 0x1fc41709), TOBN(0xc1da368b, 0x54c6d519)},
+          {TOBN(0x2b0785ce, 0xd5113cf7), TOBN(0x0670f633, 0x5a34708f),
+           TOBN(0x46e23767, 0x15cc3f88), TOBN(0x1b480cfa, 0x50c72c8f)}},
+         {{TOBN(0x20288602, 0x4147519a), TOBN(0xd0981eac, 0x26b372f0),
+           TOBN(0xa9d4a7ca, 0xa785ebc8), TOBN(0xd953c50d, 0xdbdf58e9)},
+          {TOBN(0x9d6361cc, 0xfd590f8f), TOBN(0x72e9626b, 0x44e6c917),
+           TOBN(0x7fd96110, 0x22eb64cf), TOBN(0x863ebb7e, 0x9eb288f3)}},
+         {{TOBN(0x6e6ab761, 0x6aca8ee7), TOBN(0x97d10b39, 0xd7b40358),
+           TOBN(0x1687d377, 0x1e5feb0d), TOBN(0xc83e50e4, 0x8265a27a)},
+          {TOBN(0x8f75a9fe, 0xc954b313), TOBN(0xcc2e8f47, 0x310d1f61),
+           TOBN(0xf5ba81c5, 0x6557d0e0), TOBN(0x25f9680c, 0x3eaf6207)}},
+         {{TOBN(0xf95c6609, 0x4354080b), TOBN(0x5225bfa5, 0x7bf2fe1c),
+           TOBN(0xc5c004e2, 0x5c7d98fa), TOBN(0x3561bf1c, 0x019aaf60)},
+          {TOBN(0x5e6f9f17, 0xba151474), TOBN(0xdec2f934, 0xb04f6eca),
+           TOBN(0x64e368a1, 0x269acb1e), TOBN(0x1332d9e4, 0x0cdda493)}},
+         {{TOBN(0x60d6cf69, 0xdf23de05), TOBN(0x66d17da2, 0x009339a0),
+           TOBN(0x9fcac985, 0x0a693923), TOBN(0xbcf057fc, 0xed7c6a6d)},
+          {TOBN(0xc3c5c8c5, 0xf0b5662c), TOBN(0x25318dd8, 0xdcba4f24),
+           TOBN(0x60e8cb75, 0x082b69ff), TOBN(0x7c23b3ee, 0x1e728c01)}},
+         {{TOBN(0x15e10a0a, 0x097e4403), TOBN(0xcb3d0a86, 0x19854665),
+           TOBN(0x88d8e211, 0xd67d4826), TOBN(0xb39af66e, 0x0b9d2839)},
+          {TOBN(0xa5f94588, 0xbd475ca8), TOBN(0xe06b7966, 0xc077b80b),
+           TOBN(0xfedb1485, 0xda27c26c), TOBN(0xd290d33a, 0xfe0fd5e0)}},
+         {{TOBN(0xa40bcc47, 0xf34fb0fa), TOBN(0xb4760cc8, 0x1fb1ab09),
+           TOBN(0x8fca0993, 0xa273bfe3), TOBN(0x13e4fe07, 0xf70b213c)},
+          {TOBN(0x3bcdb992, 0xfdb05163), TOBN(0x8c484b11, 0x0c2b19b6),
+           TOBN(0x1acb815f, 0xaaf2e3e2), TOBN(0xc6905935, 0xb89ff1b4)}},
+         {{TOBN(0xb2ad6f9d, 0x586e74e1), TOBN(0x488883ad, 0x67b80484),
+           TOBN(0x758aa2c7, 0x369c3ddb), TOBN(0x8ab74e69, 0x9f9afd31)},
+          {TOBN(0x10fc2d28, 0x5e21beb1), TOBN(0x3484518a, 0x318c42f9),
+           TOBN(0x377427dc, 0x53cf40c3), TOBN(0x9de0781a, 0x391bc1d9)}},
+         {{TOBN(0x8faee858, 0x693807e1), TOBN(0xa3865327, 0x4e81ccc7),
+           TOBN(0x02c30ff2, 0x6f835b84), TOBN(0xb604437b, 0x0d3d38d4)},
+          {TOBN(0xb3fc8a98, 0x5ca1823d), TOBN(0xb82f7ec9, 0x03be0324),
+           TOBN(0xee36d761, 0xcf684a33), TOBN(0x5a01df0e, 0x9f29bf7d)}},
+         {{TOBN(0x686202f3, 0x1306583d), TOBN(0x05b10da0, 0x437c622e),
+           TOBN(0xbf9aaa0f, 0x076a7bc8), TOBN(0x25e94efb, 0x8f8f4e43)},
+          {TOBN(0x8a35c9b7, 0xfa3dc26d), TOBN(0xe0e5fb93, 0x96ff03c5),
+           TOBN(0xa77e3843, 0xebc394ce), TOBN(0xcede6595, 0x8361de60)}},
+         {{TOBN(0xd27c22f6, 0xa1993545), TOBN(0xab01cc36, 0x24d671ba),
+           TOBN(0x63fa2877, 0xa169c28e), TOBN(0x925ef904, 0x2eb08376)},
+          {TOBN(0x3b2fa3cf, 0x53aa0b32), TOBN(0xb27beb5b, 0x71c49d7a),
+           TOBN(0xb60e1834, 0xd105e27f), TOBN(0xd6089788, 0x4f68570d)}},
+         {{TOBN(0x23094ce0, 0xd6fbc2ac), TOBN(0x738037a1, 0x815ff551),
+           TOBN(0xda73b1bb, 0x6bef119c), TOBN(0xdcf6c430, 0xeef506ba)},
+          {TOBN(0x00e4fe7b, 0xe3ef104a), TOBN(0xebdd9a2c, 0x0a065628),
+           TOBN(0x853a81c3, 0x8792043e), TOBN(0x22ad6ece, 0xb3b59108)}},
+         {{TOBN(0x9fb813c0, 0x39cd297d), TOBN(0x8ec7e16e, 0x05bda5d9),
+           TOBN(0x2834797c, 0x0d104b96), TOBN(0xcc11a2e7, 0x7c511510)},
+          {TOBN(0x96ca5a53, 0x96ee6380), TOBN(0x054c8655, 0xcea38742),
+           TOBN(0xb5946852, 0xd54dfa7d), TOBN(0x97c422e7, 0x1f4ab207)}},
+         {{TOBN(0xbf907509, 0x0c22b540), TOBN(0x2cde42aa, 0xb7c267d4),
+           TOBN(0xba18f9ed, 0x5ab0d693), TOBN(0x3ba62aa6, 0x6e4660d9)},
+          {TOBN(0xb24bf97b, 0xab9ea96a), TOBN(0x5d039642, 0xe3b60e32),
+           TOBN(0x4e6a4506, 0x7c4d9bd5), TOBN(0x666c5b9e, 0x7ed4a6a4)}},
+         {{TOBN(0xfa3fdcd9, 0x8edbd7cc), TOBN(0x4660bb87, 0xc6ccd753),
+           TOBN(0x9ae90820, 0x21e6b64f), TOBN(0x8a56a713, 0xb36bfb3f)},
+          {TOBN(0xabfce096, 0x5726d47f), TOBN(0x9eed01b2, 0x0b1a9a7f),
+           TOBN(0x30e9cad4, 0x4eb74a37), TOBN(0x7b2524cc, 0x53e9666d)}},
+         {{TOBN(0x6a29683b, 0x8f4b002f), TOBN(0xc2200d7a, 0x41f4fc20),
+           TOBN(0xcf3af47a, 0x3a338acc), TOBN(0x6539a4fb, 0xe7128975)},
+          {TOBN(0xcec31c14, 0xc33c7fcf), TOBN(0x7eb6799b, 0xc7be322b),
+           TOBN(0x119ef4e9, 0x6646f623), TOBN(0x7b7a26a5, 0x54d7299b)}},
+         {{TOBN(0xcb37f08d, 0x403f46f2), TOBN(0x94b8fc43, 0x1a0ec0c7),
+           TOBN(0xbb8514e3, 0xc332142f), TOBN(0xf3ed2c33, 0xe80d2a7a)},
+          {TOBN(0x8d2080af, 0xb639126c), TOBN(0xf7b6be60, 0xe3553ade),
+           TOBN(0x3950aa9f, 0x1c7e2b09), TOBN(0x847ff958, 0x6410f02b)}},
+         {{TOBN(0x877b7cf5, 0x678a31b0), TOBN(0xd50301ae, 0x3998b620),
+           TOBN(0x734257c5, 0xc00fb396), TOBN(0xf9fb18a0, 0x04e672a6)},
+          {TOBN(0xff8bd8eb, 0xe8758851), TOBN(0x1e64e4c6, 0x5d99ba44),
+           TOBN(0x4b8eaedf, 0x7dfd93b7), TOBN(0xba2f2a98, 0x04e76b8c)}},
+         {{TOBN(0x7d790cba, 0xe8053433), TOBN(0xc8e725a0, 0x3d2c9585),
+           TOBN(0x58c5c476, 0xcdd8f5ed), TOBN(0xd106b952, 0xefa9fe1d)},
+          {TOBN(0x3c5c775b, 0x0eff13a9), TOBN(0x242442ba, 0xe057b930),
+           TOBN(0xe9f458d4, 0xc9b70cbd), TOBN(0x69b71448, 0xa3cdb89a)}},
+         {{TOBN(0x41ee46f6, 0x0e2ed742), TOBN(0x573f1045, 0x40067493),
+           TOBN(0xb1e154ff, 0x9d54c304), TOBN(0x2ad0436a, 0x8d3a7502)},
+          {TOBN(0xee4aaa2d, 0x431a8121), TOBN(0xcd38b3ab, 0x886f11ed),
+           TOBN(0x57d49ea6, 0x034a0eb7), TOBN(0xd2b773bd, 0xf7e85e58)}},
+         {{TOBN(0x4a559ac4, 0x9b5c1f14), TOBN(0xc444be1a, 0x3e54df2b),
+           TOBN(0x13aad704, 0xeda41891), TOBN(0xcd927bec, 0x5eb5c788)},
+          {TOBN(0xeb3c8516, 0xe48c8a34), TOBN(0x1b7ac812, 0x4b546669),
+           TOBN(0x1815f896, 0x594df8ec), TOBN(0x87c6a79c, 0x79227865)}},
+         {{TOBN(0xae02a2f0, 0x9b56ddbd), TOBN(0x1339b5ac, 0x8a2f1cf3),
+           TOBN(0xf2b569c7, 0x839dff0d), TOBN(0xb0b9e864, 0xfee9a43d)},
+          {TOBN(0x4ff8ca41, 0x77bb064e), TOBN(0x145a2812, 0xfd249f63),
+           TOBN(0x3ab7beac, 0xf86f689a), TOBN(0x9bafec27, 0x01d35f5e)}},
+         {{TOBN(0x28054c65, 0x4265aa91), TOBN(0xa4b18304, 0x035efe42),
+           TOBN(0x6887b0e6, 0x9639dec7), TOBN(0xf4b8f6ad, 0x3d52aea5)},
+          {TOBN(0xfb9293cc, 0x971a8a13), TOBN(0x3f159e5d, 0x4c934d07),
+           TOBN(0x2c50e9b1, 0x09acbc29), TOBN(0x08eb65e6, 0x7154d129)}},
+         {{TOBN(0x4feff589, 0x30b75c3e), TOBN(0x0bb82fe2, 0x94491c93),
+           TOBN(0xd8ac377a, 0x89af62bb), TOBN(0xd7b51490, 0x9685e49f)},
+          {TOBN(0xabca9a7b, 0x04497f19), TOBN(0x1b35ed0a, 0x1a7ad13f),
+           TOBN(0x6b601e21, 0x3ec86ed6), TOBN(0xda91fcb9, 0xce0c76f1)}},
+         {{TOBN(0x9e28507b, 0xd7ab27e1), TOBN(0x7c19a555, 0x63945b7b),
+           TOBN(0x6b43f0a1, 0xaafc9827), TOBN(0x443b4fbd, 0x3aa55b91)},
+          {TOBN(0x962b2e65, 0x6962c88f), TOBN(0x139da8d4, 0xce0db0ca),
+           TOBN(0xb93f05dd, 0x1b8d6c4f), TOBN(0x779cdff7, 0x180b9824)}},
+         {{TOBN(0xbba23fdd, 0xae57c7b7), TOBN(0x345342f2, 0x1b932522),
+           TOBN(0xfd9c80fe, 0x556d4aa3), TOBN(0xa03907ba, 0x6525bb61)},
+          {TOBN(0x38b010e1, 0xff218933), TOBN(0xc066b654, 0xaa52117b),
+           TOBN(0x8e141920, 0x94f2e6ea), TOBN(0x66a27dca, 0x0d32f2b2)}},
+         {{TOBN(0x69c7f993, 0x048b3717), TOBN(0xbf5a989a, 0xb178ae1c),
+           TOBN(0x49fa9058, 0x564f1d6b), TOBN(0x27ec6e15, 0xd31fde4e)},
+          {TOBN(0x4cce0373, 0x7276e7fc), TOBN(0x64086d79, 0x89d6bf02),
+           TOBN(0x5a72f046, 0x4ccdd979), TOBN(0x909c3566, 0x47775631)}},
+         {{TOBN(0x1c07bc6b, 0x75dd7125), TOBN(0xb4c6bc97, 0x87a0428d),
+           TOBN(0x507ece52, 0xfdeb6b9d), TOBN(0xfca56512, 0xb2c95432)},
+          {TOBN(0x15d97181, 0xd0e8bd06), TOBN(0x384dd317, 0xc6bb46ea),
+           TOBN(0x5441ea20, 0x3952b624), TOBN(0xbcf70dee, 0x4e7dc2fb)}},
+         {{TOBN(0x372b016e, 0x6628e8c3), TOBN(0x07a0d667, 0xb60a7522),
+           TOBN(0xcf05751b, 0x0a344ee2), TOBN(0x0ec09a48, 0x118bdeec)},
+          {TOBN(0x6e4b3d4e, 0xd83dce46), TOBN(0x43a6316d, 0x99d2fc6e),
+           TOBN(0xa99d8989, 0x56cf044c), TOBN(0x7c7f4454, 0xae3e5fb7)}},
+         {{TOBN(0xb2e6b121, 0xfbabbe92), TOBN(0x281850fb, 0xe1330076),
+           TOBN(0x093581ec, 0x97890015), TOBN(0x69b1dded, 0x75ff77f5)},
+          {TOBN(0x7cf0b18f, 0xab105105), TOBN(0x953ced31, 0xa89ccfef),
+           TOBN(0x3151f85f, 0xeb914009), TOBN(0x3c9f1b87, 0x88ed48ad)}},
+         {{TOBN(0xc9aba1a1, 0x4a7eadcb), TOBN(0x928e7501, 0x522e71cf),
+           TOBN(0xeaede727, 0x3a2e4f83), TOBN(0x467e10d1, 0x1ce3bbd3)},
+          {TOBN(0xf3442ac3, 0xb955dcf0), TOBN(0xba96307d, 0xd3d5e527),
+           TOBN(0xf763a10e, 0xfd77f474), TOBN(0x5d744bd0, 0x6a6e1ff0)}},
+         {{TOBN(0xd287282a, 0xa777899e), TOBN(0xe20eda8f, 0xd03f3cde),
+           TOBN(0x6a7e75bb, 0x50b07d31), TOBN(0x0b7e2a94, 0x6f379de4)},
+          {TOBN(0x31cb64ad, 0x19f593cf), TOBN(0x7b1a9e4f, 0x1e76ef1d),
+           TOBN(0xe18c9c9d, 0xb62d609c), TOBN(0x439bad6d, 0xe779a650)}},
+         {{TOBN(0x219d9066, 0xe032f144), TOBN(0x1db632b8, 0xe8b2ec6a),
+           TOBN(0xff0d0fd4, 0xfda12f78), TOBN(0x56fb4c2d, 0x2a25d265)},
+          {TOBN(0x5f4e2ee1, 0x255a03f1), TOBN(0x61cd6af2, 0xe96af176),
+           TOBN(0xe0317ba8, 0xd068bc97), TOBN(0x927d6bab, 0x264b988e)}},
+         {{TOBN(0xa18f07e0, 0xe90fb21e), TOBN(0x00fd2b80, 0xbba7fca1),
+           TOBN(0x20387f27, 0x95cd67b5), TOBN(0x5b89a4e7, 0xd39707f7)},
+          {TOBN(0x8f83ad3f, 0x894407ce), TOBN(0xa0025b94, 0x6c226132),
+           TOBN(0xc79563c7, 0xf906c13b), TOBN(0x5f548f31, 0x4e7bb025)}},
+         {{TOBN(0x2b4c6b8f, 0xeac6d113), TOBN(0xa67e3f9c, 0x0e813c76),
+           TOBN(0x3982717c, 0x3fe1f4b9), TOBN(0x58865819, 0x26d8050e)},
+          {TOBN(0x99f3640c, 0xf7f06f20), TOBN(0xdc610216, 0x2a66ebc2),
+           TOBN(0x52f2c175, 0x767a1e08), TOBN(0x05660e1a, 0x5999871b)}},
+         {{TOBN(0x6b0f1762, 0x6d3c4693), TOBN(0xf0e7d627, 0x37ed7bea),
+           TOBN(0xc51758c7, 0xb75b226d), TOBN(0x40a88628, 0x1f91613b)},
+          {TOBN(0x889dbaa7, 0xbbb38ce0), TOBN(0xe0404b65, 0xbddcad81),
+           TOBN(0xfebccd3a, 0x8bc9671f), TOBN(0xfbf9a357, 0xee1f5375)}},
+         {{TOBN(0x5dc169b0, 0x28f33398), TOBN(0xb07ec11d, 0x72e90f65),
+           TOBN(0xae7f3b4a, 0xfaab1eb1), TOBN(0xd970195e, 0x5f17538a)},
+          {TOBN(0x52b05cbe, 0x0181e640), TOBN(0xf5debd62, 0x2643313d),
+           TOBN(0x76148154, 0x5df31f82), TOBN(0x23e03b33, 0x3a9e13c5)}},
+         {{TOBN(0xff758949, 0x4fde0c1f), TOBN(0xbf8a1abe, 0xe5b6ec20),
+           TOBN(0x702278fb, 0x87e1db6c), TOBN(0xc447ad7a, 0x35ed658f)},
+          {TOBN(0x48d4aa38, 0x03d0ccf2), TOBN(0x80acb338, 0x819a7c03),
+           TOBN(0x9bc7c89e, 0x6e17cecc), TOBN(0x46736b8b, 0x03be1d82)}},
+         {{TOBN(0xd65d7b60, 0xc0432f96), TOBN(0xddebe7a3, 0xdeb5442f),
+           TOBN(0x79a25307, 0x7dff69a2), TOBN(0x37a56d94, 0x02cf3122)},
+          {TOBN(0x8bab8aed, 0xf2350d0a), TOBN(0x13c3f276, 0x037b0d9a),
+           TOBN(0xc664957c, 0x44c65cae), TOBN(0x88b44089, 0xc2e71a88)}},
+         {{TOBN(0xdb88e5a3, 0x5cb02664), TOBN(0x5d4c0bf1, 0x8686c72e),
+           TOBN(0xea3d9b62, 0xa682d53e), TOBN(0x9b605ef4, 0x0b2ad431)},
+          {TOBN(0x71bac202, 0xc69645d0), TOBN(0xa115f03a, 0x6a1b66e7),
+           TOBN(0xfe2c563a, 0x158f4dc4), TOBN(0xf715b3a0, 0x4d12a78c)}},
+         {{TOBN(0x8f7f0a48, 0xd413213a), TOBN(0x2035806d, 0xc04becdb),
+           TOBN(0xecd34a99, 0x5d8587f5), TOBN(0x4d8c3079, 0x9f6d3a71)},
+          {TOBN(0x1b2a2a67, 0x8d95a8f6), TOBN(0xc58c9d7d, 0xf2110d0d),
+           TOBN(0xdeee81d5, 0xcf8fba3f), TOBN(0xa42be3c0, 0x0c7cdf68)}},
+         {{TOBN(0x2126f742, 0xd43b5eaa), TOBN(0x054a0766, 0xdfa59b85),
+           TOBN(0x9d0d5e36, 0x126bfd45), TOBN(0xa1f8fbd7, 0x384f8a8f)},
+          {TOBN(0x317680f5, 0xd563fccc), TOBN(0x48ca5055, 0xf280a928),
+           TOBN(0xe00b81b2, 0x27b578cf), TOBN(0x10aad918, 0x2994a514)}},
+         {{TOBN(0xd9e07b62, 0xb7bdc953), TOBN(0x9f0f6ff2, 0x5bc086dd),
+           TOBN(0x09d1ccff, 0x655eee77), TOBN(0x45475f79, 0x5bef7df1)},
+          {TOBN(0x3faa28fa, 0x86f702cc), TOBN(0x92e60905, 0x0f021f07),
+           TOBN(0xe9e62968, 0x7f8fa8c6), TOBN(0xbd71419a, 0xf036ea2c)}},
+         {{TOBN(0x171ee1cc, 0x6028da9a), TOBN(0x5352fe1a, 0xc251f573),
+           TOBN(0xf8ff236e, 0x3fa997f4), TOBN(0xd831b6c9, 0xa5749d5f)},
+          {TOBN(0x7c872e1d, 0xe350e2c2), TOBN(0xc56240d9, 0x1e0ce403),
+           TOBN(0xf9deb077, 0x6974f5cb), TOBN(0x7d50ba87, 0x961c3728)}},
+         {{TOBN(0xd6f89426, 0x5a3a2518), TOBN(0xcf817799, 0xc6303d43),
+           TOBN(0x510a0471, 0x619e5696), TOBN(0xab049ff6, 0x3a5e307b)},
+          {TOBN(0xe4cdf9b0, 0xfeb13ec7), TOBN(0xd5e97117, 0x9d8ff90c),
+           TOBN(0xf6f64d06, 0x9afa96af), TOBN(0x00d0bf5e, 0x9d2012a2)}},
+         {{TOBN(0xe63f301f, 0x358bcdc0), TOBN(0x07689e99, 0x0a9d47f8),
+           TOBN(0x1f689e2f, 0x4f43d43a), TOBN(0x4d542a16, 0x90920904)},
+          {TOBN(0xaea293d5, 0x9ca0a707), TOBN(0xd061fe45, 0x8ac68065),
+           TOBN(0x1033bf1b, 0x0090008c), TOBN(0x29749558, 0xc08a6db6)}},
+         {{TOBN(0x74b5fc59, 0xc1d5d034), TOBN(0xf712e9f6, 0x67e215e0),
+           TOBN(0xfd520cbd, 0x860200e6), TOBN(0x0229acb4, 0x3ea22588)},
+          {TOBN(0x9cd1e14c, 0xfff0c82e), TOBN(0x87684b62, 0x59c69e73),
+           TOBN(0xda85e61c, 0x96ccb989), TOBN(0x2d5dbb02, 0xa3d06493)}},
+         {{TOBN(0xf22ad33a, 0xe86b173c), TOBN(0xe8e41ea5, 0xa79ff0e3),
+           TOBN(0x01d2d725, 0xdd0d0c10), TOBN(0x31f39088, 0x032d28f9)},
+          {TOBN(0x7b3f71e1, 0x7829839e), TOBN(0x0cf691b4, 0x4502ae58),
+           TOBN(0xef658dbd, 0xbefc6115), TOBN(0xa5cd6ee5, 0xb3ab5314)}},
+         {{TOBN(0x206c8d7b, 0x5f1d2347), TOBN(0x794645ba, 0x4cc2253a),
+           TOBN(0xd517d8ff, 0x58389e08), TOBN(0x4fa20dee, 0x9f847288)},
+          {TOBN(0xeba072d8, 0xd797770a), TOBN(0x7360c91d, 0xbf429e26),
+           TOBN(0x7200a3b3, 0x80af8279), TOBN(0x6a1c9150, 0x82dadce3)}},
+         {{TOBN(0x0ee6d3a7, 0xc35d8794), TOBN(0x042e6558, 0x0356bae5),
+           TOBN(0x9f59698d, 0x643322fd), TOBN(0x9379ae15, 0x50a61967)},
+          {TOBN(0x64b9ae62, 0xfcc9981e), TOBN(0xaed3d631, 0x6d2934c6),
+           TOBN(0x2454b302, 0x5e4e65eb), TOBN(0xab09f647, 0xf9950428)}}},
+        {{{TOBN(0xb2083a12, 0x22248acc), TOBN(0x1f6ec0ef, 0x3264e366),
+           TOBN(0x5659b704, 0x5afdee28), TOBN(0x7a823a40, 0xe6430bb5)},
+          {TOBN(0x24592a04, 0xe1900a79), TOBN(0xcde09d4a, 0xc9ee6576),
+           TOBN(0x52b6463f, 0x4b5ea54a), TOBN(0x1efe9ed3, 0xd3ca65a7)}},
+         {{TOBN(0xe27a6dbe, 0x305406dd), TOBN(0x8eb7dc7f, 0xdd5d1957),
+           TOBN(0xf54a6876, 0x387d4d8f), TOBN(0x9c479409, 0xc7762de4)},
+          {TOBN(0xbe4d5b5d, 0x99b30778), TOBN(0x25380c56, 0x6e793682),
+           TOBN(0x602d37f3, 0xdac740e3), TOBN(0x140deabe, 0x1566e4ae)}},
+         {{TOBN(0x4481d067, 0xafd32acf), TOBN(0xd8f0fcca, 0xe1f71ccf),
+           TOBN(0xd208dd0c, 0xb596f2da), TOBN(0xd049d730, 0x9aad93f9)},
+          {TOBN(0xc79f263d, 0x42ab580e), TOBN(0x09411bb1, 0x23f707b4),
+           TOBN(0x8cfde1ff, 0x835e0eda), TOBN(0x72707490, 0x90f03402)}},
+         {{TOBN(0xeaee6126, 0xc49a861e), TOBN(0x024f3b65, 0xe14f0d06),
+           TOBN(0x51a3f1e8, 0xc69bfc17), TOBN(0xc3c3a8e9, 0xa7686381)},
+          {TOBN(0x3400752c, 0xb103d4c8), TOBN(0x02bc4613, 0x9218b36b),
+           TOBN(0xc67f75eb, 0x7651504a), TOBN(0xd6848b56, 0xd02aebfa)}},
+         {{TOBN(0xbd9802e6, 0xc30fa92b), TOBN(0x5a70d96d, 0x9a552784),
+           TOBN(0x9085c4ea, 0x3f83169b), TOBN(0xfa9423bb, 0x06908228)},
+          {TOBN(0x2ffebe12, 0xfe97a5b9), TOBN(0x85da6049, 0x71b99118),
+           TOBN(0x9cbc2f7f, 0x63178846), TOBN(0xfd96bc70, 0x9153218e)}},
+         {{TOBN(0x958381db, 0x1782269b), TOBN(0xae34bf79, 0x2597e550),
+           TOBN(0xbb5c6064, 0x5f385153), TOBN(0x6f0e96af, 0xe3088048)},
+          {TOBN(0xbf6a0215, 0x77884456), TOBN(0xb3b5688c, 0x69310ea7),
+           TOBN(0x17c94295, 0x04fad2de), TOBN(0xe020f0e5, 0x17896d4d)}},
+         {{TOBN(0x730ba0ab, 0x0976505f), TOBN(0x567f6813, 0x095e2ec5),
+           TOBN(0x47062010, 0x6331ab71), TOBN(0x72cfa977, 0x41d22b9f)},
+          {TOBN(0x33e55ead, 0x8a2373da), TOBN(0xa8d0d5f4, 0x7ba45a68),
+           TOBN(0xba1d8f9c, 0x03029d15), TOBN(0x8f34f1cc, 0xfc55b9f3)}},
+         {{TOBN(0xcca4428d, 0xbbe5a1a9), TOBN(0x8187fd5f, 0x3126bd67),
+           TOBN(0x0036973a, 0x48105826), TOBN(0xa39b6663, 0xb8bd61a0)},
+          {TOBN(0x6d42deef, 0x2d65a808), TOBN(0x4969044f, 0x94636b19),
+           TOBN(0xf611ee47, 0xdd5d564c), TOBN(0x7b2f3a49, 0xd2873077)}},
+         {{TOBN(0x94157d45, 0x300eb294), TOBN(0x2b2a656e, 0x169c1494),
+           TOBN(0xc000dd76, 0xd3a47aa9), TOBN(0xa2864e4f, 0xa6243ea4)},
+          {TOBN(0x82716c47, 0xdb89842e), TOBN(0x12dfd7d7, 0x61479fb7),
+           TOBN(0x3b9a2c56, 0xe0b2f6dc), TOBN(0x46be862a, 0xd7f85d67)}},
+         {{TOBN(0x03b0d8dd, 0x0f82b214), TOBN(0x460c34f9, 0xf103cbc6),
+           TOBN(0xf32e5c03, 0x18d79e19), TOBN(0x8b8888ba, 0xa84117f8)},
+          {TOBN(0x8f3c37dc, 0xc0722677), TOBN(0x10d21be9, 0x1c1c0f27),
+           TOBN(0xd47c8468, 0xe0f7a0c6), TOBN(0x9bf02213, 0xadecc0e0)}},
+         {{TOBN(0x0baa7d12, 0x42b48b99), TOBN(0x1bcb665d, 0x48424096),
+           TOBN(0x8b847cd6, 0xebfb5cfb), TOBN(0x87c2ae56, 0x9ad4d10d)},
+          {TOBN(0xf1cbb122, 0x0de36726), TOBN(0xe7043c68, 0x3fdfbd21),
+           TOBN(0x4bd0826a, 0x4e79d460), TOBN(0x11f5e598, 0x4bd1a2cb)}},
+         {{TOBN(0x97554160, 0xb7fe7b6e), TOBN(0x7d16189a, 0x400a3fb2),
+           TOBN(0xd73e9bea, 0xe328ca1e), TOBN(0x0dd04b97, 0xe793d8cc)},
+          {TOBN(0xa9c83c9b, 0x506db8cc), TOBN(0x5cd47aae, 0xcf38814c),
+           TOBN(0x26fc430d, 0xb64b45e6), TOBN(0x079b5499, 0xd818ea84)}},
+         {{TOBN(0xebb01102, 0xc1c24a3b), TOBN(0xca24e568, 0x1c161c1a),
+           TOBN(0x103eea69, 0x36f00a4a), TOBN(0x9ad76ee8, 0x76176c7b)},
+          {TOBN(0x97451fc2, 0x538e0ff7), TOBN(0x94f89809, 0x6604b3b0),
+           TOBN(0x6311436e, 0x3249cfd7), TOBN(0x27b4a7bd, 0x41224f69)}},
+         {{TOBN(0x03b5d21a, 0xe0ac2941), TOBN(0x279b0254, 0xc2d31937),
+           TOBN(0x3307c052, 0xcac992d0), TOBN(0x6aa7cb92, 0xefa8b1f3)},
+          {TOBN(0x5a182580, 0x0d37c7a5), TOBN(0x13380c37, 0x342d5422),
+           TOBN(0x92ac2d66, 0xd5d2ef92), TOBN(0x035a70c9, 0x030c63c6)}},
+         {{TOBN(0xc16025dd, 0x4ce4f152), TOBN(0x1f419a71, 0xf9df7c06),
+           TOBN(0x6d5b2214, 0x91e4bb14), TOBN(0xfc43c6cc, 0x839fb4ce)},
+          {TOBN(0x49f06591, 0x925d6b2d), TOBN(0x4b37d9d3, 0x62186598),
+           TOBN(0x8c54a971, 0xd01b1629), TOBN(0xe1a9c29f, 0x51d50e05)}},
+         {{TOBN(0x5109b785, 0x71ba1861), TOBN(0x48b22d5c, 0xd0c8f93d),
+           TOBN(0xe8fa84a7, 0x8633bb93), TOBN(0x53fba6ba, 0x5aebbd08)},
+          {TOBN(0x7ff27df3, 0xe5eea7d8), TOBN(0x521c8796, 0x68ca7158),
+           TOBN(0xb9d5133b, 0xce6f1a05), TOBN(0x2d50cd53, 0xfd0ebee4)}},
+         {{TOBN(0xc82115d6, 0xc5a3ef16), TOBN(0x993eff9d, 0xba079221),
+           TOBN(0xe4da2c5e, 0x4b5da81c), TOBN(0x9a89dbdb, 0x8033fd85)},
+          {TOBN(0x60819ebf, 0x2b892891), TOBN(0x53902b21, 0x5d14a4d5),
+           TOBN(0x6ac35051, 0xd7fda421), TOBN(0xcc6ab885, 0x61c83284)}},
+         {{TOBN(0x14eba133, 0xf74cff17), TOBN(0x240aaa03, 0xecb813f2),
+           TOBN(0xcfbb6540, 0x6f665bee), TOBN(0x084b1fe4, 0xa425ad73)},
+          {TOBN(0x009d5d16, 0xd081f6a6), TOBN(0x35304fe8, 0xeef82c90),
+           TOBN(0xf20346d5, 0xaa9eaa22), TOBN(0x0ada9f07, 0xac1c91e3)}},
+         {{TOBN(0xa6e21678, 0x968a6144), TOBN(0x54c1f77c, 0x07b31a1e),
+           TOBN(0xd6bb787e, 0x5781fbe1), TOBN(0x61bd2ee0, 0xe31f1c4a)},
+          {TOBN(0xf25aa1e9, 0x781105fc), TOBN(0x9cf2971f, 0x7b2f8e80),
+           TOBN(0x26d15412, 0xcdff919b), TOBN(0x01db4ebe, 0x34bc896e)}},
+         {{TOBN(0x7d9b3e23, 0xb40df1cf), TOBN(0x59337373, 0x94e971b4),
+           TOBN(0xbf57bd14, 0x669cf921), TOBN(0x865daedf, 0x0c1a1064)},
+          {TOBN(0x3eb70bd3, 0x83279125), TOBN(0xbc3d5b9f, 0x34ecdaab),
+           TOBN(0x91e3ed7e, 0x5f755caf), TOBN(0x49699f54, 0xd41e6f02)}},
+         {{TOBN(0x185770e1, 0xd4a7a15b), TOBN(0x08f3587a, 0xeaac87e7),
+           TOBN(0x352018db, 0x473133ea), TOBN(0x674ce719, 0x04fd30fc)},
+          {TOBN(0x7b8d9835, 0x088b3e0e), TOBN(0x7a0356a9, 0x5d0d47a1),
+           TOBN(0x9d9e7659, 0x6474a3c4), TOBN(0x61ea48a7, 0xff66966c)}},
+         {{TOBN(0x30417758, 0x0f3e4834), TOBN(0xfdbb21c2, 0x17a9afcb),
+           TOBN(0x756fa17f, 0x2f9a67b3), TOBN(0x2a6b2421, 0xa245c1a8)},
+          {TOBN(0x64be2794, 0x4af02291), TOBN(0xade465c6, 0x2a5804fe),
+           TOBN(0x8dffbd39, 0xa6f08fd7), TOBN(0xc4efa84c, 0xaa14403b)}},
+         {{TOBN(0xa1b91b2a, 0x442b0f5c), TOBN(0xb748e317, 0xcf997736),
+           TOBN(0x8d1b62bf, 0xcee90e16), TOBN(0x907ae271, 0x0b2078c0)},
+          {TOBN(0xdf31534b, 0x0c9bcddd), TOBN(0x043fb054, 0x39adce83),
+           TOBN(0x99031043, 0xd826846a), TOBN(0x61a9c0d6, 0xb144f393)}},
+         {{TOBN(0xdab48046, 0x47718427), TOBN(0xdf17ff9b, 0x6e830f8b),
+           TOBN(0x408d7ee8, 0xe49a1347), TOBN(0x6ac71e23, 0x91c1d4ae)},
+          {TOBN(0xc8cbb9fd, 0x1defd73c), TOBN(0x19840657, 0xbbbbfec5),
+           TOBN(0x39db1cb5, 0x9e7ef8ea), TOBN(0x78aa8296, 0x64105f30)}},
+         {{TOBN(0xa3d9b7f0, 0xa3738c29), TOBN(0x0a2f235a, 0xbc3250a3),
+           TOBN(0x55e506f6, 0x445e4caf), TOBN(0x0974f73d, 0x33475f7a)},
+          {TOBN(0xd37dbba3, 0x5ba2f5a8), TOBN(0x542c6e63, 0x6af40066),
+           TOBN(0x26d99b53, 0xc5d73e2c), TOBN(0x06060d7d, 0x6c3ca33e)}},
+         {{TOBN(0xcdbef1c2, 0x065fef4a), TOBN(0x77e60f7d, 0xfd5b92e3),
+           TOBN(0xd7c549f0, 0x26708350), TOBN(0x201b3ad0, 0x34f121bf)},
+          {TOBN(0x5fcac2a1, 0x0334fc14), TOBN(0x8a9a9e09, 0x344552f6),
+           TOBN(0x7dd8a1d3, 0x97653082), TOBN(0x5fc0738f, 0x79d4f289)}},
+         {{TOBN(0x787d244d, 0x17d2d8c3), TOBN(0xeffc6345, 0x70830684),
+           TOBN(0x5ddb96dd, 0xe4f73ae5), TOBN(0x8efb14b1, 0x172549a5)},
+          {TOBN(0x6eb73eee, 0x2245ae7a), TOBN(0xbca4061e, 0xea11f13e),
+           TOBN(0xb577421d, 0x30b01f5d), TOBN(0xaa688b24, 0x782e152c)}},
+         {{TOBN(0x67608e71, 0xbd3502ba), TOBN(0x4ef41f24, 0xb4de75a0),
+           TOBN(0xb08dde5e, 0xfd6125e5), TOBN(0xde484825, 0xa409543f)},
+          {TOBN(0x1f198d98, 0x65cc2295), TOBN(0x428a3771, 0x6e0edfa2),
+           TOBN(0x4f9697a2, 0xadf35fc7), TOBN(0x01a43c79, 0xf7cac3c7)}},
+         {{TOBN(0xb05d7059, 0x0fd3659a), TOBN(0x8927f30c, 0xbb7f2d9a),
+           TOBN(0x4023d1ac, 0x8cf984d3), TOBN(0x32125ed3, 0x02897a45)},
+          {TOBN(0xfb572dad, 0x3d414205), TOBN(0x73000ef2, 0xe3fa82a9),
+           TOBN(0x4c0868e9, 0xf10a5581), TOBN(0x5b61fc67, 0x6b0b3ca5)}},
+         {{TOBN(0xc1258d5b, 0x7cae440c), TOBN(0x21c08b41, 0x402b7531),
+           TOBN(0xf61a8955, 0xde932321), TOBN(0x3568faf8, 0x2d1408af)},
+          {TOBN(0x71b15e99, 0x9ecf965b), TOBN(0xf14ed248, 0xe917276f),
+           TOBN(0xc6f4caa1, 0x820cf9e2), TOBN(0x681b20b2, 0x18d83c7e)}},
+         {{TOBN(0x6cde738d, 0xc6c01120), TOBN(0x71db0813, 0xae70e0db),
+           TOBN(0x95fc0644, 0x74afe18c), TOBN(0x34619053, 0x129e2be7)},
+          {TOBN(0x80615cea, 0xdb2a3b15), TOBN(0x0a49a19e, 0xdb4c7073),
+           TOBN(0x0e1b84c8, 0x8fd2d367), TOBN(0xd74bf462, 0x033fb8aa)}},
+         {{TOBN(0x889f6d65, 0x533ef217), TOBN(0x7158c7e4, 0xc3ca2e87),
+           TOBN(0xfb670dfb, 0xdc2b4167), TOBN(0x75910a01, 0x844c257f)},
+          {TOBN(0xf336bf07, 0xcf88577d), TOBN(0x22245250, 0xe45e2ace),
+           TOBN(0x2ed92e8d, 0x7ca23d85), TOBN(0x29f8be4c, 0x2b812f58)}},
+         {{TOBN(0xdd9ebaa7, 0x076fe12b), TOBN(0x3f2400cb, 0xae1537f9),
+           TOBN(0x1aa93528, 0x17bdfb46), TOBN(0xc0f98430, 0x67883b41)},
+          {TOBN(0x5590ede1, 0x0170911d), TOBN(0x7562f5bb, 0x34d4b17f),
+           TOBN(0xe1fa1df2, 0x1826b8d2), TOBN(0xb40b796a, 0x6bd80d59)}},
+         {{TOBN(0xd65bf197, 0x3467ba92), TOBN(0x8c9b46db, 0xf70954b0),
+           TOBN(0x97c8a0f3, 0x0e78f15d), TOBN(0xa8f3a69a, 0x85a4c961)},
+          {TOBN(0x4242660f, 0x61e4ce9b), TOBN(0xbf06aab3, 0x6ea6790c),
+           TOBN(0xc6706f8e, 0xec986416), TOBN(0x9e56dec1, 0x9a9fc225)}},
+         {{TOBN(0x527c46f4, 0x9a9898d9), TOBN(0xd799e77b, 0x5633cdef),
+           TOBN(0x24eacc16, 0x7d9e4297), TOBN(0xabb61cea, 0x6b1cb734)},
+          {TOBN(0xbee2e8a7, 0xf778443c), TOBN(0x3bb42bf1, 0x29de2fe6),
+           TOBN(0xcbed86a1, 0x3003bb6f), TOBN(0xd3918e6c, 0xd781cdf6)}},
+         {{TOBN(0x4bee3271, 0x9a5103f1), TOBN(0x5243efc6, 0xf50eac06),
+           TOBN(0xb8e122cb, 0x6adcc119), TOBN(0x1b7faa84, 0xc0b80a08)},
+          {TOBN(0x32c3d1bd, 0x6dfcd08c), TOBN(0x129dec4e, 0x0be427de),
+           TOBN(0x98ab679c, 0x1d263c83), TOBN(0xafc83cb7, 0xcef64eff)}},
+         {{TOBN(0x85eb6088, 0x2fa6be76), TOBN(0x892585fb, 0x1328cbfe),
+           TOBN(0xc154d3ed, 0xcf618dda), TOBN(0xc44f601b, 0x3abaf26e)},
+          {TOBN(0x7bf57d0b, 0x2be1fdfd), TOBN(0xa833bd2d, 0x21137fee),
+           TOBN(0x9353af36, 0x2db591a8), TOBN(0xc76f26dc, 0x5562a056)}},
+         {{TOBN(0x1d87e47d, 0x3fdf5a51), TOBN(0x7afb5f93, 0x55c9cab0),
+           TOBN(0x91bbf58f, 0x89e0586e), TOBN(0x7c72c018, 0x0d843709)},
+          {TOBN(0xa9a5aafb, 0x99b5c3dc), TOBN(0xa48a0f1d, 0x3844aeb0),
+           TOBN(0x7178b7dd, 0xb667e482), TOBN(0x453985e9, 0x6e23a59a)}},
+         {{TOBN(0x4a54c860, 0x01b25dd8), TOBN(0x0dd37f48, 0xfb897c8a),
+           TOBN(0x5f8aa610, 0x0ea90cd9), TOBN(0xc8892c68, 0x16d5830d)},
+          {TOBN(0xeb4befc0, 0xef514ca5), TOBN(0x478eb679, 0xe72c9ee6),
+           TOBN(0x9bca20da, 0xdbc40d5f), TOBN(0xf015de21, 0xdde4f64a)}},
+         {{TOBN(0xaa6a4de0, 0xeaf4b8a5), TOBN(0x68cfd9ca, 0x4bc60e32),
+           TOBN(0x668a4b01, 0x7fd15e70), TOBN(0xd9f0694a, 0xf27dc09d)},
+          {TOBN(0xf6c3cad5, 0xba708bcd), TOBN(0x5cd2ba69, 0x5bb95c2a),
+           TOBN(0xaa28c1d3, 0x33c0a58f), TOBN(0x23e274e3, 0xabc77870)}},
+         {{TOBN(0x44c3692d, 0xdfd20a4a), TOBN(0x091c5fd3, 0x81a66653),
+           TOBN(0x6c0bb691, 0x09a0757d), TOBN(0x9072e8b9, 0x667343ea)},
+          {TOBN(0x31d40eb0, 0x80848bec), TOBN(0x95bd480a, 0x79fd36cc),
+           TOBN(0x01a77c61, 0x65ed43f5), TOBN(0xafccd127, 0x2e0d40bf)}},
+         {{TOBN(0xeccfc82d, 0x1cc1884b), TOBN(0xc85ac201, 0x5d4753b4),
+           TOBN(0xc7a6caac, 0x658e099f), TOBN(0xcf46369e, 0x04b27390)},
+          {TOBN(0xe2e7d049, 0x506467ea), TOBN(0x481b63a2, 0x37cdeccc),
+           TOBN(0x4029abd8, 0xed80143a), TOBN(0x28bfe3c7, 0xbcb00b88)}},
+         {{TOBN(0x3bec1009, 0x0643d84a), TOBN(0x885f3668, 0xabd11041),
+           TOBN(0xdb02432c, 0xf83a34d6), TOBN(0x32f7b360, 0x719ceebe)},
+          {TOBN(0xf06c7837, 0xdad1fe7a), TOBN(0x60a157a9, 0x5441a0b0),
+           TOBN(0x704970e9, 0xe2d47550), TOBN(0xcd2bd553, 0x271b9020)}},
+         {{TOBN(0xff57f82f, 0x33e24a0b), TOBN(0x9cbee23f, 0xf2565079),
+           TOBN(0x16353427, 0xeb5f5825), TOBN(0x276feec4, 0xe948d662)},
+          {TOBN(0xd1b62bc6, 0xda10032b), TOBN(0x718351dd, 0xf0e72a53),
+           TOBN(0x93452076, 0x2420e7ba), TOBN(0x96368fff, 0x3a00118d)}},
+         {{TOBN(0x00ce2d26, 0x150a49e4), TOBN(0x0c28b636, 0x3f04706b),
+           TOBN(0xbad65a46, 0x58b196d0), TOBN(0x6c8455fc, 0xec9f8b7c)},
+          {TOBN(0xe90c895f, 0x2d71867e), TOBN(0x5c0be31b, 0xedf9f38c),
+           TOBN(0x2a37a15e, 0xd8f6ec04), TOBN(0x239639e7, 0x8cd85251)}},
+         {{TOBN(0xd8975315, 0x9c7c4c6b), TOBN(0x603aa3c0, 0xd7409af7),
+           TOBN(0xb8d53d0c, 0x007132fb), TOBN(0x68d12af7, 0xa6849238)},
+          {TOBN(0xbe0607e7, 0xbf5d9279), TOBN(0x9aa50055, 0xaada74ce),
+           TOBN(0xe81079cb, 0xba7e8ccb), TOBN(0x610c71d1, 0xa5f4ff5e)}},
+         {{TOBN(0x9e2ee1a7, 0x5aa07093), TOBN(0xca84004b, 0xa75da47c),
+           TOBN(0x074d3951, 0x3de75401), TOBN(0xf938f756, 0xbb311592)},
+          {TOBN(0x96197618, 0x00a43421), TOBN(0x39a25362, 0x07bc78c8),
+           TOBN(0x278f710a, 0x0a171276), TOBN(0xb28446ea, 0x8d1a8f08)}},
+         {{TOBN(0x184781bf, 0xe3b6a661), TOBN(0x7751cb1d, 0xe6d279f7),
+           TOBN(0xf8ff95d6, 0xc59eb662), TOBN(0x186d90b7, 0x58d3dea7)},
+          {TOBN(0x0e4bb6c1, 0xdfb4f754), TOBN(0x5c5cf56b, 0x2b2801dc),
+           TOBN(0xc561e452, 0x1f54564d), TOBN(0xb4fb8c60, 0xf0dd7f13)}},
+         {{TOBN(0xf8849630, 0x33ff98c7), TOBN(0x9619fffa, 0xcf17769c),
+           TOBN(0xf8090bf6, 0x1bfdd80a), TOBN(0x14d9a149, 0x422cfe63)},
+          {TOBN(0xb354c360, 0x6f6df9ea), TOBN(0xdbcf770d, 0x218f17ea),
+           TOBN(0x207db7c8, 0x79eb3480), TOBN(0x213dbda8, 0x559b6a26)}},
+         {{TOBN(0xac4c200b, 0x29fc81b3), TOBN(0xebc3e09f, 0x171d87c1),
+           TOBN(0x91799530, 0x1481aa9e), TOBN(0x051b92e1, 0x92e114fa)},
+          {TOBN(0xdf8f92e9, 0xecb5537f), TOBN(0x44b1b2cc, 0x290c7483),
+           TOBN(0xa711455a, 0x2adeb016), TOBN(0x964b6856, 0x81a10c2c)}},
+         {{TOBN(0x4f159d99, 0xcec03623), TOBN(0x05532225, 0xef3271ea),
+           TOBN(0xb231bea3, 0xc5ee4849), TOBN(0x57a54f50, 0x7094f103)},
+          {TOBN(0x3e2d421d, 0x9598b352), TOBN(0xe865a49c, 0x67412ab4),
+           TOBN(0xd2998a25, 0x1cc3a912), TOBN(0x5d092808, 0x0c74d65d)}},
+         {{TOBN(0x73f45908, 0x4088567a), TOBN(0xeb6b280e, 0x1f214a61),
+           TOBN(0x8c9adc34, 0xcaf0c13d), TOBN(0x39d12938, 0xf561fb80)},
+          {TOBN(0xb2dc3a5e, 0xbc6edfb4), TOBN(0x7485b1b1, 0xfe4d210e),
+           TOBN(0x062e0400, 0xe186ae72), TOBN(0x91e32d5c, 0x6eeb3b88)}},
+         {{TOBN(0x6df574d7, 0x4be59224), TOBN(0xebc88ccc, 0x716d55f3),
+           TOBN(0x26c2e6d0, 0xcad6ed33), TOBN(0xc6e21e7d, 0x0d3e8b10)},
+          {TOBN(0x2cc5840e, 0x5bcc36bb), TOBN(0x9292445e, 0x7da74f69),
+           TOBN(0x8be8d321, 0x4e5193a8), TOBN(0x3ec23629, 0x8df06413)}},
+         {{TOBN(0xc7e9ae85, 0xb134defa), TOBN(0x6073b1d0, 0x1bb2d475),
+           TOBN(0xb9ad615e, 0x2863c00d), TOBN(0x9e29493d, 0x525f4ac4)},
+          {TOBN(0xc32b1dea, 0x4e9acf4f), TOBN(0x3e1f01c8, 0xa50db88d),
+           TOBN(0xb05d70ea, 0x04da916c), TOBN(0x714b0d0a, 0xd865803e)}},
+         {{TOBN(0x4bd493fc, 0x9920cb5e), TOBN(0x5b44b1f7, 0x92c7a3ac),
+           TOBN(0xa2a77293, 0xbcec9235), TOBN(0x5ee06e87, 0xcd378553)},
+          {TOBN(0xceff8173, 0xda621607), TOBN(0x2bb03e4c, 0x99f5d290),
+           TOBN(0x2945106a, 0xa6f734ac), TOBN(0xb5056604, 0xd25c4732)}},
+         {{TOBN(0x5945920c, 0xe079afee), TOBN(0x686e17a0, 0x6789831f),
+           TOBN(0x5966bee8, 0xb74a5ae5), TOBN(0x38a673a2, 0x1e258d46)},
+          {TOBN(0xbd1cc1f2, 0x83141c95), TOBN(0x3b2ecf4f, 0x0e96e486),
+           TOBN(0xcd3aa896, 0x74e5fc78), TOBN(0x415ec10c, 0x2482fa7a)}},
+         {{TOBN(0x15234419, 0x80503380), TOBN(0x513d917a, 0xd314b392),
+           TOBN(0xb0b52f4e, 0x63caecae), TOBN(0x07bf22ad, 0x2dc7780b)},
+          {TOBN(0xe761e8a1, 0xe4306839), TOBN(0x1b3be962, 0x5dd7feaa),
+           TOBN(0x4fe728de, 0x74c778f1), TOBN(0xf1fa0bda, 0x5e0070f6)}},
+         {{TOBN(0x85205a31, 0x6ec3f510), TOBN(0x2c7e4a14, 0xd2980475),
+           TOBN(0xde3c19c0, 0x6f30ebfd), TOBN(0xdb1c1f38, 0xd4b7e644)},
+          {TOBN(0xfe291a75, 0x5dce364a), TOBN(0xb7b22a3c, 0x058f5be3),
+           TOBN(0x2cd2c302, 0x37fea38c), TOBN(0x2930967a, 0x2e17be17)}},
+         {{TOBN(0x87f009de, 0x0c061c65), TOBN(0xcb014aac, 0xedc6ed44),
+           TOBN(0x49bd1cb4, 0x3bafb1eb), TOBN(0x81bd8b5c, 0x282d3688)},
+          {TOBN(0x1cdab87e, 0xf01a17af), TOBN(0x21f37ac4, 0xe710063b),
+           TOBN(0x5a6c5676, 0x42fc8193), TOBN(0xf4753e70, 0x56a6015c)}},
+         {{TOBN(0x020f795e, 0xa15b0a44), TOBN(0x8f37c8d7, 0x8958a958),
+           TOBN(0x63b7e89b, 0xa4b675b5), TOBN(0xb4fb0c0c, 0x0fc31aea)},
+          {TOBN(0xed95e639, 0xa7ff1f2e), TOBN(0x9880f5a3, 0x619614fb),
+           TOBN(0xdeb6ff02, 0x947151ab), TOBN(0x5bc5118c, 0xa868dcdb)}},
+         {{TOBN(0xd8da2055, 0x4c20cea5), TOBN(0xcac2776e, 0x14c4d69a),
+           TOBN(0xcccb22c1, 0x622d599b), TOBN(0xa4ddb653, 0x68a9bb50)},
+          {TOBN(0x2c4ff151, 0x1b4941b4), TOBN(0xe1ff19b4, 0x6efba588),
+           TOBN(0x35034363, 0xc48345e0), TOBN(0x45542e3d, 0x1e29dfc4)}},
+         {{TOBN(0xf197cb91, 0x349f7aed), TOBN(0x3b2b5a00, 0x8fca8420),
+           TOBN(0x7c175ee8, 0x23aaf6d8), TOBN(0x54dcf421, 0x35af32b6)},
+          {TOBN(0x0ba14307, 0x27d6561e), TOBN(0x879d5ee4, 0xd175b1e2),
+           TOBN(0xc7c43673, 0x99807db5), TOBN(0x77a54455, 0x9cd55bcd)}},
+         {{TOBN(0xe6c2ff13, 0x0105c072), TOBN(0x18f7a99f, 0x8dda7da4),
+           TOBN(0x4c301820, 0x0e2d35c1), TOBN(0x06a53ca0, 0xd9cc6c82)},
+          {TOBN(0xaa21cc1e, 0xf1aa1d9e), TOBN(0x32414334, 0x4a75b1e8),
+           TOBN(0x2a6d1328, 0x0ebe9fdc), TOBN(0x16bd173f, 0x98a4755a)}},
+         {{TOBN(0xfbb9b245, 0x2133ffd9), TOBN(0x39a8b2f1, 0x830f1a20),
+           TOBN(0x484bc97d, 0xd5a1f52a), TOBN(0xd6aebf56, 0xa40eddf8)},
+          {TOBN(0x32257acb, 0x76ccdac6), TOBN(0xaf4d36ec, 0x1586ff27),
+           TOBN(0x8eaa8863, 0xf8de7dd1), TOBN(0x0045d5cf, 0x88647c16)}}},
+        {{{TOBN(0xa6f3d574, 0xc005979d), TOBN(0xc2072b42, 0x6a40e350),
+           TOBN(0xfca5c156, 0x8de2ecf9), TOBN(0xa8c8bf5b, 0xa515344e)},
+          {TOBN(0x97aee555, 0x114df14a), TOBN(0xd4374a4d, 0xfdc5ec6b),
+           TOBN(0x754cc28f, 0x2ca85418), TOBN(0x71cb9e27, 0xd3c41f78)}},
+         {{TOBN(0x89105079, 0x03605c39), TOBN(0xf0843d9e, 0xa142c96c),
+           TOBN(0xf3744934, 0x16923684), TOBN(0x732caa2f, 0xfa0a2893)},
+          {TOBN(0xb2e8c270, 0x61160170), TOBN(0xc32788cc, 0x437fbaa3),
+           TOBN(0x39cd818e, 0xa6eda3ac), TOBN(0xe2e94239, 0x9e2b2e07)}},
+         {{TOBN(0x6967d39b, 0x0260e52a), TOBN(0xd42585cc, 0x90653325),
+           TOBN(0x0d9bd605, 0x21ca7954), TOBN(0x4fa20877, 0x81ed57b3)},
+          {TOBN(0x60c1eff8, 0xe34a0bbe), TOBN(0x56b0040c, 0x84f6ef64),
+           TOBN(0x28be2b24, 0xb1af8483), TOBN(0xb2278163, 0xf5531614)}},
+         {{TOBN(0x8df27545, 0x5922ac1c), TOBN(0xa7b3ef5c, 0xa52b3f63),
+           TOBN(0x8e77b214, 0x71de57c4), TOBN(0x31682c10, 0x834c008b)},
+          {TOBN(0xc76824f0, 0x4bd55d31), TOBN(0xb6d1c086, 0x17b61c71),
+           TOBN(0x31db0903, 0xc2a5089d), TOBN(0x9c092172, 0x184e5d3f)}},
+         {{TOBN(0xdd7ced5b, 0xc00cc638), TOBN(0x1a2015eb, 0x61278fc2),
+           TOBN(0x2e8e5288, 0x6a37f8d6), TOBN(0xc457786f, 0xe79933ad)},
+          {TOBN(0xb3fe4cce, 0x2c51211a), TOBN(0xad9b10b2, 0x24c20498),
+           TOBN(0x90d87a4f, 0xd28db5e5), TOBN(0x698cd105, 0x3aca2fc3)}},
+         {{TOBN(0x4f112d07, 0xe91b536d), TOBN(0xceb982f2, 0x9eba09d6),
+           TOBN(0x3c157b2c, 0x197c396f), TOBN(0xe23c2d41, 0x7b66eb24)},
+          {TOBN(0x480c57d9, 0x3f330d37), TOBN(0xb3a4c8a1, 0x79108deb),
+           TOBN(0x702388de, 0xcb199ce5), TOBN(0x0b019211, 0xb944a8d4)}},
+         {{TOBN(0x24f2a692, 0x840bb336), TOBN(0x7c353bdc, 0xa669fa7b),
+           TOBN(0xda20d6fc, 0xdec9c300), TOBN(0x625fbe2f, 0xa13a4f17)},
+          {TOBN(0xa2b1b61a, 0xdbc17328), TOBN(0x008965bf, 0xa9515621),
+           TOBN(0x49690939, 0xc620ff46), TOBN(0x182dd27d, 0x8717e91c)}},
+         {{TOBN(0x5ace5035, 0xea6c3997), TOBN(0x54259aaa, 0xc2610bef),
+           TOBN(0xef18bb3f, 0x3c80dd39), TOBN(0x6910b95b, 0x5fc3fa39)},
+          {TOBN(0xfce2f510, 0x43e09aee), TOBN(0xced56c9f, 0xa7675665),
+           TOBN(0x10e265ac, 0xd872db61), TOBN(0x6982812e, 0xae9fce69)}},
+         {{TOBN(0x29be11c6, 0xce800998), TOBN(0x72bb1752, 0xb90360d9),
+           TOBN(0x2c193197, 0x5a4ad590), TOBN(0x2ba2f548, 0x9fc1dbc0)},
+          {TOBN(0x7fe4eebb, 0xe490ebe0), TOBN(0x12a0a4cd, 0x7fae11c0),
+           TOBN(0x7197cf81, 0xe903ba37), TOBN(0xcf7d4aa8, 0xde1c6dd8)}},
+         {{TOBN(0x92af6bf4, 0x3fd5684c), TOBN(0x2b26eecf, 0x80360aa1),
+           TOBN(0xbd960f30, 0x00546a82), TOBN(0x407b3c43, 0xf59ad8fe)},
+          {TOBN(0x86cae5fe, 0x249c82ba), TOBN(0x9e0faec7, 0x2463744c),
+           TOBN(0x87f551e8, 0x94916272), TOBN(0x033f9344, 0x6ceb0615)}},
+         {{TOBN(0x1e5eb0d1, 0x8be82e84), TOBN(0x89967f0e, 0x7a582fef),
+           TOBN(0xbcf687d5, 0xa6e921fa), TOBN(0xdfee4cf3, 0xd37a09ba)},
+          {TOBN(0x94f06965, 0xb493c465), TOBN(0x638b9a1c, 0x7635c030),
+           TOBN(0x76667864, 0x66f05e9f), TOBN(0xccaf6808, 0xc04da725)}},
+         {{TOBN(0xca2eb690, 0x768fccfc), TOBN(0xf402d37d, 0xb835b362),
+           TOBN(0x0efac0d0, 0xe2fdfcce), TOBN(0xefc9cdef, 0xb638d990)},
+          {TOBN(0x2af12b72, 0xd1669a8b), TOBN(0x33c536bc, 0x5774ccbd),
+           TOBN(0x30b21909, 0xfb34870e), TOBN(0xc38fa2f7, 0x7df25aca)}},
+         {{TOBN(0x74c5f02b, 0xbf81f3f5), TOBN(0x0525a5ae, 0xaf7e4581),
+           TOBN(0x88d2aaba, 0x433c54ae), TOBN(0xed9775db, 0x806a56c5)},
+          {TOBN(0xd320738a, 0xc0edb37d), TOBN(0x25fdb6ee, 0x66cc1f51),
+           TOBN(0xac661d17, 0x10600d76), TOBN(0x931ec1f3, 0xbdd1ed76)}},
+         {{TOBN(0x65c11d62, 0x19ee43f1), TOBN(0x5cd57c3e, 0x60829d97),
+           TOBN(0xd26c91a3, 0x984be6e8), TOBN(0xf08d9309, 0x8b0c53bd)},
+          {TOBN(0x94bc9e5b, 0xc016e4ea), TOBN(0xd3916839, 0x11d43d2b),
+           TOBN(0x886c5ad7, 0x73701155), TOBN(0xe0377626, 0x20b00715)}},
+         {{TOBN(0x7f01c9ec, 0xaa80ba59), TOBN(0x3083411a, 0x68538e51),
+           TOBN(0x970370f1, 0xe88128af), TOBN(0x625cc3db, 0x91dec14b)},
+          {TOBN(0xfef9666c, 0x01ac3107), TOBN(0xb2a8d577, 0xd5057ac3),
+           TOBN(0xb0f26299, 0x92be5df7), TOBN(0xf579c8e5, 0x00353924)}},
+         {{TOBN(0xb8fa3d93, 0x1341ed7a), TOBN(0x4223272c, 0xa7b59d49),
+           TOBN(0x3dcb1947, 0x83b8c4a4), TOBN(0x4e413c01, 0xed1302e4)},
+          {TOBN(0x6d999127, 0xe17e44ce), TOBN(0xee86bf75, 0x33b3adfb),
+           TOBN(0xf6902fe6, 0x25aa96ca), TOBN(0xb73540e4, 0xe5aae47d)}},
+         {{TOBN(0x32801d7b, 0x1b4a158c), TOBN(0xe571c99e, 0x27e2a369),
+           TOBN(0x40cb76c0, 0x10d9f197), TOBN(0xc308c289, 0x3167c0ae)},
+          {TOBN(0xa6ef9dd3, 0xeb7958f2), TOBN(0xa7226dfc, 0x300879b1),
+           TOBN(0x6cd0b362, 0x7edf0636), TOBN(0x4efbce6c, 0x7bc37eed)}},
+         {{TOBN(0x75f92a05, 0x8d699021), TOBN(0x586d4c79, 0x772566e3),
+           TOBN(0x378ca5f1, 0x761ad23a), TOBN(0x650d86fc, 0x1465a8ac)},
+          {TOBN(0x7a4ed457, 0x842ba251), TOBN(0x6b65e3e6, 0x42234933),
+           TOBN(0xaf1543b7, 0x31aad657), TOBN(0xa4cefe98, 0xcbfec369)}},
+         {{TOBN(0xb587da90, 0x9f47befb), TOBN(0x6562e9fb, 0x41312d13),
+           TOBN(0xa691ea59, 0xeff1cefe), TOBN(0xcc30477a, 0x05fc4cf6)},
+          {TOBN(0xa1632461, 0x0b0ffd3d), TOBN(0xa1f16f3b, 0x5b355956),
+           TOBN(0x5b148d53, 0x4224ec24), TOBN(0xdc834e7b, 0xf977012a)}},
+         {{TOBN(0x7bfc5e75, 0xb2c69dbc), TOBN(0x3aa77a29, 0x03c3da6c),
+           TOBN(0xde0df03c, 0xca910271), TOBN(0xcbd5ca4a, 0x7806dc55)},
+          {TOBN(0xe1ca5807, 0x6db476cb), TOBN(0xfde15d62, 0x5f37a31e),
+           TOBN(0xf49af520, 0xf41af416), TOBN(0x96c5c5b1, 0x7d342db5)}},
+         {{TOBN(0x155c43b7, 0xeb4ceb9b), TOBN(0x2e993010, 0x4e77371a),
+           TOBN(0x1d2987da, 0x675d43af), TOBN(0xef2bc1c0, 0x8599fd72)},
+          {TOBN(0x96894b7b, 0x9342f6b2), TOBN(0x201eadf2, 0x7c8e71f0),
+           TOBN(0xf3479d9f, 0x4a1f3efc), TOBN(0xe0f8a742, 0x702a9704)}},
+         {{TOBN(0xeafd44b6, 0xb3eba40c), TOBN(0xf9739f29, 0xc1c1e0d0),
+           TOBN(0x0091471a, 0x619d505e), TOBN(0xc15f9c96, 0x9d7c263e)},
+          {TOBN(0x5be47285, 0x83afbe33), TOBN(0xa3b6d6af, 0x04f1e092),
+           TOBN(0xe76526b9, 0x751a9d11), TOBN(0x2ec5b26d, 0x9a4ae4d2)}},
+         {{TOBN(0xeb66f4d9, 0x02f6fb8d), TOBN(0x4063c561, 0x96912164),
+           TOBN(0xeb7050c1, 0x80ef3000), TOBN(0x288d1c33, 0xeaa5b3f0)},
+          {TOBN(0xe87c68d6, 0x07806fd8), TOBN(0xb2f7f9d5, 0x4bbbf50f),
+           TOBN(0x25972f3a, 0xac8d6627), TOBN(0xf8547774, 0x10e8c13b)}},
+         {{TOBN(0xcc50ef6c, 0x872b4a60), TOBN(0xab2a34a4, 0x4613521b),
+           TOBN(0x39c5c190, 0x983e15d1), TOBN(0x61dde5df, 0x59905512)},
+          {TOBN(0xe417f621, 0x9f2275f3), TOBN(0x0750c8b6, 0x451d894b),
+           TOBN(0x75b04ab9, 0x78b0bdaa), TOBN(0x3bfd9fd4, 0x458589bd)}},
+         {{TOBN(0xf1013e30, 0xee9120b6), TOBN(0x2b51af93, 0x23a4743e),
+           TOBN(0xea96ffae, 0x48d14d9e), TOBN(0x71dc0dbe, 0x698a1d32)},
+          {TOBN(0x914962d2, 0x0180cca4), TOBN(0x1ae60677, 0xc3568963),
+           TOBN(0x8cf227b1, 0x437bc444), TOBN(0xc650c83b, 0xc9962c7a)}},
+         {{TOBN(0x23c2c7dd, 0xfe7ccfc4), TOBN(0xf925c89d, 0x1b929d48),
+           TOBN(0x4460f74b, 0x06783c33), TOBN(0xac2c8d49, 0xa590475a)},
+          {TOBN(0xfb40b407, 0xb807bba0), TOBN(0x9d1e362d, 0x69ff8f3a),
+           TOBN(0xa33e9681, 0xcbef64a4), TOBN(0x67ece5fa, 0x332fb4b2)}},
+         {{TOBN(0x6900a99b, 0x739f10e3), TOBN(0xc3341ca9, 0xff525925),
+           TOBN(0xee18a626, 0xa9e2d041), TOBN(0xa5a83685, 0x29580ddd)},
+          {TOBN(0xf3470c81, 0x9d7de3cd), TOBN(0xedf02586, 0x2062cf9c),
+           TOBN(0xf43522fa, 0xc010edb0), TOBN(0x30314135, 0x13a4b1ae)}},
+         {{TOBN(0xc792e02a, 0xdb22b94b), TOBN(0x993d8ae9, 0xa1eaa45b),
+           TOBN(0x8aad6cd3, 0xcd1e1c63), TOBN(0x89529ca7, 0xc5ce688a)},
+          {TOBN(0x2ccee3aa, 0xe572a253), TOBN(0xe02b6438, 0x02a21efb),
+           TOBN(0xa7091b6e, 0xc9430358), TOBN(0x06d1b1fa, 0x9d7db504)}},
+         {{TOBN(0x58846d32, 0xc4744733), TOBN(0x40517c71, 0x379f9e34),
+           TOBN(0x2f65655f, 0x130ef6ca), TOBN(0x526e4488, 0xf1f3503f)},
+          {TOBN(0x8467bd17, 0x7ee4a976), TOBN(0x1d9dc913, 0x921363d1),
+           TOBN(0xd8d24c33, 0xb069e041), TOBN(0x5eb5da0a, 0x2cdf7f51)}},
+         {{TOBN(0x1c0f3cb1, 0x197b994f), TOBN(0x3c95a6c5, 0x2843eae9),
+           TOBN(0x7766ffc9, 0xa6097ea5), TOBN(0x7bea4093, 0xd723b867)},
+          {TOBN(0xb48e1f73, 0x4db378f9), TOBN(0x70025b00, 0xe37b77ac),
+           TOBN(0x943dc8e7, 0xaf24ad46), TOBN(0xb98a15ac, 0x16d00a85)}},
+         {{TOBN(0x3adc38ba, 0x2743b004), TOBN(0xb1c7f4f7, 0x334415ee),
+           TOBN(0xea43df8f, 0x1e62d05a), TOBN(0x32618905, 0x9d76a3b6)},
+          {TOBN(0x2fbd0bb5, 0xa23a0f46), TOBN(0x5bc971db, 0x6a01918c),
+           TOBN(0x7801d94a, 0xb4743f94), TOBN(0xb94df65e, 0x676ae22b)}},
+         {{TOBN(0xaafcbfab, 0xaf95894c), TOBN(0x7b9bdc07, 0x276b2241),
+           TOBN(0xeaf98362, 0x5bdda48b), TOBN(0x5977faf2, 0xa3fcb4df)},
+          {TOBN(0xbed042ef, 0x052c4b5b), TOBN(0x9fe87f71, 0x067591f0),
+           TOBN(0xc89c73ca, 0x22f24ec7), TOBN(0x7d37fa9e, 0xe64a9f1b)}},
+         {{TOBN(0x2710841a, 0x15562627), TOBN(0x2c01a613, 0xc243b034),
+           TOBN(0x1d135c56, 0x2bc68609), TOBN(0xc2ca1715, 0x8b03f1f6)},
+          {TOBN(0xc9966c2d, 0x3eb81d82), TOBN(0xc02abf4a, 0x8f6df13e),
+           TOBN(0x77b34bd7, 0x8f72b43b), TOBN(0xaff6218f, 0x360c82b0)}},
+         {{TOBN(0x0aa5726c, 0x8d55b9d2), TOBN(0xdc0adbe9, 0x99e9bffb),
+           TOBN(0x9097549c, 0xefb9e72a), TOBN(0x16755712, 0x9dfb3111)},
+          {TOBN(0xdd8bf984, 0xf26847f9), TOBN(0xbcb8e387, 0xdfb30cb7),
+           TOBN(0xc1fd32a7, 0x5171ef9c), TOBN(0x977f3fc7, 0x389b363f)}},
+         {{TOBN(0x116eaf2b, 0xf4babda0), TOBN(0xfeab68bd, 0xf7113c8e),
+           TOBN(0xd1e3f064, 0xb7def526), TOBN(0x1ac30885, 0xe0b3fa02)},
+          {TOBN(0x1c5a6e7b, 0x40142d9d), TOBN(0x839b5603, 0x30921c0b),
+           TOBN(0x48f301fa, 0x36a116a3), TOBN(0x380e1107, 0xcfd9ee6d)}},
+         {{TOBN(0x7945ead8, 0x58854be1), TOBN(0x4111c12e, 0xcbd4d49d),
+           TOBN(0xece3b1ec, 0x3a29c2ef), TOBN(0x6356d404, 0x8d3616f5)},
+          {TOBN(0x9f0d6a8f, 0x594d320e), TOBN(0x0989316d, 0xf651ccd2),
+           TOBN(0x6c32117a, 0x0f8fdde4), TOBN(0x9abe5cc5, 0xa26a9bbc)}},
+         {{TOBN(0xcff560fb, 0x9723f671), TOBN(0x21b2a12d, 0x7f3d593c),
+           TOBN(0xe4cb18da, 0x24ba0696), TOBN(0x186e2220, 0xc3543384)},
+          {TOBN(0x722f64e0, 0x88312c29), TOBN(0x94282a99, 0x17dc7752),
+           TOBN(0x62467bbf, 0x5a85ee89), TOBN(0xf435c650, 0xf10076a0)}},
+         {{TOBN(0xc9ff1539, 0x43b3a50b), TOBN(0x7132130c, 0x1a53efbc),
+           TOBN(0x31bfe063, 0xf7b0c5b7), TOBN(0xb0179a7d, 0x4ea994cc)},
+          {TOBN(0x12d064b3, 0xc85f455b), TOBN(0x47259328, 0x8f6e0062),
+           TOBN(0xf64e590b, 0xb875d6d9), TOBN(0x22dd6225, 0xad92bcc7)}},
+         {{TOBN(0xb658038e, 0xb9c3bd6d), TOBN(0x00cdb0d6, 0xfbba27c8),
+           TOBN(0x0c681337, 0x1062c45d), TOBN(0xd8515b8c, 0x2d33407d)},
+          {TOBN(0xcb8f699e, 0x8cbb5ecf), TOBN(0x8c4347f8, 0xc608d7d8),
+           TOBN(0x2c11850a, 0xbb3e00db), TOBN(0x20a8dafd, 0xecb49d19)}},
+         {{TOBN(0xbd781480, 0x45ee2f40), TOBN(0x75e354af, 0x416b60cf),
+           TOBN(0xde0b58a1, 0x8d49a8c4), TOBN(0xe40e94e2, 0xfa359536)},
+          {TOBN(0xbd4fa59f, 0x62accd76), TOBN(0x05cf466a, 0x8c762837),
+           TOBN(0xb5abda99, 0x448c277b), TOBN(0x5a9e01bf, 0x48b13740)}},
+         {{TOBN(0x9d457798, 0x326aad8d), TOBN(0xbdef4954, 0xc396f7e7),
+           TOBN(0x6fb274a2, 0xc253e292), TOBN(0x2800bf0a, 0x1cfe53e7)},
+          {TOBN(0x22426d31, 0x44438fd4), TOBN(0xef233923, 0x5e259f9a),
+           TOBN(0x4188503c, 0x03f66264), TOBN(0x9e5e7f13, 0x7f9fdfab)}},
+         {{TOBN(0x565eb76c, 0x5fcc1aba), TOBN(0xea632548, 0x59b5bff8),
+           TOBN(0x5587c087, 0xaab6d3fa), TOBN(0x92b639ea, 0x6ce39c1b)},
+          {TOBN(0x0706e782, 0x953b135c), TOBN(0x7308912e, 0x425268ef),
+           TOBN(0x599e92c7, 0x090e7469), TOBN(0x83b90f52, 0x9bc35e75)}},
+         {{TOBN(0x4750b3d0, 0x244975b3), TOBN(0xf3a44358, 0x11965d72),
+           TOBN(0x179c6774, 0x9c8dc751), TOBN(0xff18cdfe, 0xd23d9ff0)},
+          {TOBN(0xc4013833, 0x2028e247), TOBN(0x96e280e2, 0xf3bfbc79),
+           TOBN(0xf60417bd, 0xd0880a84), TOBN(0x263c9f3d, 0x2a568151)}},
+         {{TOBN(0x36be15b3, 0x2d2ce811), TOBN(0x846dc0c2, 0xf8291d21),
+           TOBN(0x5cfa0ecb, 0x789fcfdb), TOBN(0x45a0beed, 0xd7535b9a)},
+          {TOBN(0xec8e9f07, 0x96d69af1), TOBN(0x31a7c5b8, 0x599ab6dc),
+           TOBN(0xd36d45ef, 0xf9e2e09f), TOBN(0x3cf49ef1, 0xdcee954b)}},
+         {{TOBN(0x6be34cf3, 0x086cff9b), TOBN(0x88dbd491, 0x39a3360f),
+           TOBN(0x1e96b8cc, 0x0dbfbd1d), TOBN(0xc1e5f7bf, 0xcb7e2552)},
+          {TOBN(0x0547b214, 0x28819d98), TOBN(0xc770dd9c, 0x7aea9dcb),
+           TOBN(0xaef0d4c7, 0x041d68c8), TOBN(0xcc2b9818, 0x13cb9ba8)}},
+         {{TOBN(0x7fc7bc76, 0xfe86c607), TOBN(0x6b7b9337, 0x502a9a95),
+           TOBN(0x1948dc27, 0xd14dab63), TOBN(0x249dd198, 0xdae047be)},
+          {TOBN(0xe8356584, 0xa981a202), TOBN(0x3531dd18, 0x3a893387),
+           TOBN(0x1be11f90, 0xc85c7209), TOBN(0x93d2fe1e, 0xe2a52b5a)}},
+         {{TOBN(0x8225bfe2, 0xec6d6b97), TOBN(0x9cf6d6f4, 0xbd0aa5de),
+           TOBN(0x911459cb, 0x54779f5f), TOBN(0x5649cddb, 0x86aeb1f3)},
+          {TOBN(0x32133579, 0x3f26ce5a), TOBN(0xc289a102, 0x550f431e),
+           TOBN(0x559dcfda, 0x73b84c6f), TOBN(0x84973819, 0xee3ac4d7)}},
+         {{TOBN(0xb51e55e6, 0xf2606a82), TOBN(0xe25f7061, 0x90f2fb57),
+           TOBN(0xacef6c2a, 0xb1a4e37c), TOBN(0x864e359d, 0x5dcf2706)},
+          {TOBN(0x479e6b18, 0x7ce57316), TOBN(0x2cab2500, 0x3a96b23d),
+           TOBN(0xed489862, 0x8ef16df7), TOBN(0x2056538c, 0xef3758b5)}},
+         {{TOBN(0xa7df865e, 0xf15d3101), TOBN(0x80c5533a, 0x61b553d7),
+           TOBN(0x366e1997, 0x4ed14294), TOBN(0x6620741f, 0xb3c0bcd6)},
+          {TOBN(0x21d1d9c4, 0xedc45418), TOBN(0x005b859e, 0xc1cc4a9d),
+           TOBN(0xdf01f630, 0xa1c462f0), TOBN(0x15d06cf3, 0xf26820c7)}},
+         {{TOBN(0x9f7f24ee, 0x3484be47), TOBN(0x2ff33e96, 0x4a0c902f),
+           TOBN(0x00bdf457, 0x5a0bc453), TOBN(0x2378dfaf, 0x1aa238db)},
+          {TOBN(0x272420ec, 0x856720f2), TOBN(0x2ad9d95b, 0x96797291),
+           TOBN(0xd1242cc6, 0x768a1558), TOBN(0x2e287f8b, 0x5cc86aa8)}},
+         {{TOBN(0x796873d0, 0x990cecaa), TOBN(0xade55f81, 0x675d4080),
+           TOBN(0x2645eea3, 0x21f0cd84), TOBN(0x7a1efa0f, 0xb4e17d02)},
+          {TOBN(0xf6858420, 0x037cc061), TOBN(0x682e05f0, 0xd5d43e12),
+           TOBN(0x59c36994, 0x27218710), TOBN(0x85cbba4d, 0x3f7cd2fc)}},
+         {{TOBN(0x726f9729, 0x7a3cd22a), TOBN(0x9f8cd5dc, 0x4a628397),
+           TOBN(0x17b93ab9, 0xc23165ed), TOBN(0xff5f5dbf, 0x122823d4)},
+          {TOBN(0xc1e4e4b5, 0x654a446d), TOBN(0xd1a9496f, 0x677257ba),
+           TOBN(0x6387ba94, 0xde766a56), TOBN(0x23608bc8, 0x521ec74a)}},
+         {{TOBN(0x16a522d7, 0x6688c4d4), TOBN(0x9d6b4282, 0x07373abd),
+           TOBN(0xa62f07ac, 0xb42efaa3), TOBN(0xf73e00f7, 0xe3b90180)},
+          {TOBN(0x36175fec, 0x49421c3e), TOBN(0xc4e44f9b, 0x3dcf2678),
+           TOBN(0x76df436b, 0x7220f09f), TOBN(0x172755fb, 0x3aa8b6cf)}},
+         {{TOBN(0xbab89d57, 0x446139cc), TOBN(0x0a0a6e02, 0x5fe0208f),
+           TOBN(0xcdbb63e2, 0x11e5d399), TOBN(0x33ecaa12, 0xa8977f0b)},
+          {TOBN(0x59598b21, 0xf7c42664), TOBN(0xb3e91b32, 0xab65d08a),
+           TOBN(0x035822ee, 0xf4502526), TOBN(0x1dcf0176, 0x720a82a9)}},
+         {{TOBN(0x50f8598f, 0x3d589e02), TOBN(0xdf0478ff, 0xb1d63d2c),
+           TOBN(0x8b8068bd, 0x1571cd07), TOBN(0x30c3aa4f, 0xd79670cd)},
+          {TOBN(0x25e8fd4b, 0x941ade7f), TOBN(0x3d1debdc, 0x32790011),
+           TOBN(0x65b6dcbd, 0x3a3f9ff0), TOBN(0x282736a4, 0x793de69c)}},
+         {{TOBN(0xef69a0c3, 0xd41d3bd3), TOBN(0xb533b8c9, 0x07a26bde),
+           TOBN(0xe2801d97, 0xdb2edf9f), TOBN(0xdc4a8269, 0xe1877af0)},
+          {TOBN(0x6c1c5851, 0x3d590dbe), TOBN(0x84632f6b, 0xee4e9357),
+           TOBN(0xd36d36b7, 0x79b33374), TOBN(0xb46833e3, 0x9bbca2e6)}},
+         {{TOBN(0x37893913, 0xf7fc0586), TOBN(0x385315f7, 0x66bf4719),
+           TOBN(0x72c56293, 0xb31855dc), TOBN(0xd1416d4e, 0x849061fe)},
+          {TOBN(0xbeb3ab78, 0x51047213), TOBN(0x447f6e61, 0xf040c996),
+           TOBN(0xd06d310d, 0x638b1d0c), TOBN(0xe28a413f, 0xbad1522e)}},
+         {{TOBN(0x685a76cb, 0x82003f86), TOBN(0x610d07f7, 0x0bcdbca3),
+           TOBN(0x6ff66021, 0x9ca4c455), TOBN(0x7df39b87, 0xcea10eec)},
+          {TOBN(0xb9255f96, 0xe22db218), TOBN(0x8cc6d9eb, 0x08a34c44),
+           TOBN(0xcd4ffb86, 0x859f9276), TOBN(0x8fa15eb2, 0x50d07335)}},
+         {{TOBN(0xdf553845, 0xcf2c24b5), TOBN(0x89f66a9f, 0x52f9c3ba),
+           TOBN(0x8f22b5b9, 0xe4a7ceb3), TOBN(0xaffef809, 0x0e134686)},
+          {TOBN(0x3e53e1c6, 0x8eb8fac2), TOBN(0x93c1e4eb, 0x28aec98e),
+           TOBN(0xb6b91ec5, 0x32a43bcb), TOBN(0x2dbfa947, 0xb2d74a51)}},
+         {{TOBN(0xe065d190, 0xca84bad7), TOBN(0xfb13919f, 0xad58e65c),
+           TOBN(0x3c41718b, 0xf1cb6e31), TOBN(0x688969f0, 0x06d05c3f)},
+          {TOBN(0xd4f94ce7, 0x21264d45), TOBN(0xfdfb65e9, 0x7367532b),
+           TOBN(0x5b1be8b1, 0x0945a39d), TOBN(0x229f789c, 0x2b8baf3b)}},
+         {{TOBN(0xd8f41f3e, 0x6f49f15d), TOBN(0x678ce828, 0x907f0792),
+           TOBN(0xc69ace82, 0xfca6e867), TOBN(0x106451ae, 0xd01dcc89)},
+          {TOBN(0x1bb4f7f0, 0x19fc32d2), TOBN(0x64633dfc, 0xb00c52d2),
+           TOBN(0x8f13549a, 0xad9ea445), TOBN(0x99a3bf50, 0xfb323705)}},
+         {{TOBN(0x0c9625a2, 0x534d4dbc), TOBN(0x45b8f1d1, 0xc2a2fea3),
+           TOBN(0x76ec21a1, 0xa530fc1a), TOBN(0x4bac9c2a, 0x9e5bd734)},
+          {TOBN(0x5996d76a, 0x7b4e3587), TOBN(0x0045cdee, 0x1182d9e3),
+           TOBN(0x1aee24b9, 0x1207f13d), TOBN(0x66452e97, 0x97345a41)}},
+         {{TOBN(0x16e5b054, 0x9f950cd0), TOBN(0x9cc72fb1, 0xd7fdd075),
+           TOBN(0x6edd61e7, 0x66249663), TOBN(0xde4caa4d, 0xf043cccb)},
+          {TOBN(0x11b1f57a, 0x55c7ac17), TOBN(0x779cbd44, 0x1a85e24d),
+           TOBN(0x78030f86, 0xe46081e7), TOBN(0xfd4a6032, 0x8e20f643)}},
+         {{TOBN(0xcc7a6488, 0x0a750c0f), TOBN(0x39bacfe3, 0x4e548e83),
+           TOBN(0x3d418c76, 0x0c110f05), TOBN(0x3e4daa4c, 0xb1f11588)},
+          {TOBN(0x2733e7b5, 0x5ffc69ff), TOBN(0x46f147bc, 0x92053127),
+           TOBN(0x885b2434, 0xd722df94), TOBN(0x6a444f65, 0xe6fc6b7c)}}},
+        {{{TOBN(0x7a1a465a, 0xc3f16ea8), TOBN(0x115a461d, 0xb2f1d11c),
+           TOBN(0x4767dd95, 0x6c68a172), TOBN(0x3392f2eb, 0xd13a4698)},
+          {TOBN(0xc7a99ccd, 0xe526cdc7), TOBN(0x8e537fdc, 0x22292b81),
+           TOBN(0x76d8cf69, 0xa6d39198), TOBN(0xffc5ff43, 0x2446852d)}},
+         {{TOBN(0x97b14f7e, 0xa90567e6), TOBN(0x513257b7, 0xb6ae5cb7),
+           TOBN(0x85454a3c, 0x9f10903d), TOBN(0xd8d2c9ad, 0x69bc3724)},
+          {TOBN(0x38da9324, 0x6b29cb44), TOBN(0xb540a21d, 0x77c8cbac),
+           TOBN(0x9bbfe435, 0x01918e42), TOBN(0xfffa707a, 0x56c3614e)}},
+         {{TOBN(0x0ce4e3f1, 0xd4e353b7), TOBN(0x062d8a14, 0xef46b0a0),
+           TOBN(0x6408d5ab, 0x574b73fd), TOBN(0xbc41d1c9, 0xd3273ffd)},
+          {TOBN(0x3538e1e7, 0x6be77800), TOBN(0x71fe8b37, 0xc5655031),
+           TOBN(0x1cd91621, 0x6b9b331a), TOBN(0xad825d0b, 0xbb388f73)}},
+         {{TOBN(0x56c2e05b, 0x1cb76219), TOBN(0x0ec0bf91, 0x71567e7e),
+           TOBN(0xe7076f86, 0x61c4c910), TOBN(0xd67b085b, 0xbabc04d9)},
+          {TOBN(0x9fb90459, 0x5e93a96a), TOBN(0x7526c1ea, 0xfbdc249a),
+           TOBN(0x0d44d367, 0xecdd0bb7), TOBN(0x95399917, 0x9dc0d695)}},
+         {{TOBN(0x61360ee9, 0x9e240d18), TOBN(0x057cdcac, 0xb4b94466),
+           TOBN(0xe7667cd1, 0x2fe5325c), TOBN(0x1fa297b5, 0x21974e3b)},
+          {TOBN(0xfa4081e7, 0xdb083d76), TOBN(0x31993be6, 0xf206bd15),
+           TOBN(0x8949269b, 0x14c19f8c), TOBN(0x21468d72, 0xa9d92357)}},
+         {{TOBN(0x2ccbc583, 0xa4c506ec), TOBN(0x957ed188, 0xd1acfe97),
+           TOBN(0x8baed833, 0x12f1aea2), TOBN(0xef2a6cb4, 0x8325362d)},
+          {TOBN(0x130dde42, 0x8e195c43), TOBN(0xc842025a, 0x0e6050c6),
+           TOBN(0x2da972a7, 0x08686a5d), TOBN(0xb52999a1, 0xe508b4a8)}},
+         {{TOBN(0xd9f090b9, 0x10a5a8bd), TOBN(0xca91d249, 0x096864da),
+           TOBN(0x8e6a93be, 0x3f67dbc1), TOBN(0xacae6fba, 0xf5f4764c)},
+          {TOBN(0x1563c6e0, 0xd21411a0), TOBN(0x28fa787f, 0xda0a4ad8),
+           TOBN(0xd524491c, 0x908c8030), TOBN(0x1257ba0e, 0x4c795f07)}},
+         {{TOBN(0x83f49167, 0xceca9754), TOBN(0x426d2cf6, 0x4b7939a0),
+           TOBN(0x2555e355, 0x723fd0bf), TOBN(0xa96e6d06, 0xc4f144e2)},
+          {TOBN(0x4768a8dd, 0x87880e61), TOBN(0x15543815, 0xe508e4d5),
+           TOBN(0x09d7e772, 0xb1b65e15), TOBN(0x63439dd6, 0xac302fa0)}},
+         {{TOBN(0xb93f802f, 0xc14e35c2), TOBN(0x71735b7c, 0x4341333c),
+           TOBN(0x03a25104, 0x16d4f362), TOBN(0x3f4d069b, 0xbf433c8e)},
+          {TOBN(0x0d83ae01, 0xf78f5a7c), TOBN(0x50a8ffbe, 0x7c4eed07),
+           TOBN(0xc74f8906, 0x76e10f83), TOBN(0x7d080966, 0x9ddaf8e1)}},
+         {{TOBN(0xb11df8e1, 0x698e04cc), TOBN(0x877be203, 0x169005c8),
+           TOBN(0x32749e8c, 0x4f3c6179), TOBN(0x2dbc9d0a, 0x7853fc05)},
+          {TOBN(0x187d4f93, 0x9454d937), TOBN(0xe682ce9d, 0xb4800e1b),
+           TOBN(0xa9129ad8, 0x165e68e8), TOBN(0x0fe29735, 0xbe7f785b)}},
+         {{TOBN(0x5303f40c, 0x5b9e02b7), TOBN(0xa37c9692, 0x35ee04e8),
+           TOBN(0x5f46cc20, 0x34d6632b), TOBN(0x55ef72b2, 0x96ac545b)},
+          {TOBN(0xabec5c1f, 0x7b91b062), TOBN(0x0a79e1c7, 0xbb33e821),
+           TOBN(0xbb04b428, 0x3a9f4117), TOBN(0x0de1f28f, 0xfd2a475a)}},
+         {{TOBN(0x31019ccf, 0x3a4434b4), TOBN(0xa3458111, 0x1a7954dc),
+           TOBN(0xa9dac80d, 0xe34972a7), TOBN(0xb043d054, 0x74f6b8dd)},
+          {TOBN(0x021c319e, 0x11137b1a), TOBN(0x00a754ce, 0xed5cc03f),
+           TOBN(0x0aa2c794, 0xcbea5ad4), TOBN(0x093e67f4, 0x70c015b6)}},
+         {{TOBN(0x72cdfee9, 0xc97e3f6b), TOBN(0xc10bcab4, 0xb6da7461),
+           TOBN(0x3b02d2fc, 0xb59806b9), TOBN(0x85185e89, 0xa1de6f47)},
+          {TOBN(0x39e6931f, 0x0eb6c4d4), TOBN(0x4d4440bd, 0xd4fa5b04),
+           TOBN(0x5418786e, 0x34be7eb8), TOBN(0x6380e521, 0x9d7259bc)}},
+         {{TOBN(0x20ac0351, 0xd598d710), TOBN(0x272c4166, 0xcb3a4da4),
+           TOBN(0xdb82fe1a, 0xca71de1f), TOBN(0x746e79f2, 0xd8f54b0f)},
+          {TOBN(0x6e7fc736, 0x4b573e9b), TOBN(0x75d03f46, 0xfd4b5040),
+           TOBN(0x5c1cc36d, 0x0b98d87b), TOBN(0x513ba3f1, 0x1f472da1)}},
+         {{TOBN(0x79d0af26, 0xabb177dd), TOBN(0xf82ab568, 0x7891d564),
+           TOBN(0x2b6768a9, 0x72232173), TOBN(0xefbb3bb0, 0x8c1f6619)},
+          {TOBN(0xb29c11db, 0xa6d18358), TOBN(0x519e2797, 0xb0916d3a),
+           TOBN(0xd4dc18f0, 0x9188e290), TOBN(0x648e86e3, 0x98b0ca7f)}},
+         {{TOBN(0x859d3145, 0x983c38b5), TOBN(0xb14f176c, 0x637abc8b),
+           TOBN(0x2793fb9d, 0xcaff7be6), TOBN(0xebe5a55f, 0x35a66a5a)},
+          {TOBN(0x7cec1dcd, 0x9f87dc59), TOBN(0x7c595cd3, 0xfbdbf560),
+           TOBN(0x5b543b22, 0x26eb3257), TOBN(0x69080646, 0xc4c935fd)}},
+         {{TOBN(0x7f2e4403, 0x81e9ede3), TOBN(0x243c3894, 0xcaf6df0a),
+           TOBN(0x7c605bb1, 0x1c073b11), TOBN(0xcd06a541, 0xba6a4a62)},
+          {TOBN(0x29168949, 0x49d4e2e5), TOBN(0x33649d07, 0x4af66880),
+           TOBN(0xbfc0c885, 0xe9a85035), TOBN(0xb4e52113, 0xfc410f4b)}},
+         {{TOBN(0xdca3b706, 0x78a6513b), TOBN(0x92ea4a2a, 0x9edb1943),
+           TOBN(0x02642216, 0xdb6e2dd8), TOBN(0x9b45d0b4, 0x9fd57894)},
+          {TOBN(0x114e70db, 0xc69d11ae), TOBN(0x1477dd19, 0x4c57595f),
+           TOBN(0xbc2208b4, 0xec77c272), TOBN(0x95c5b4d7, 0xdb68f59c)}},
+         {{TOBN(0xb8c4fc63, 0x42e532b7), TOBN(0x386ba422, 0x9ae35290),
+           TOBN(0xfb5dda42, 0xd201ecbc), TOBN(0x2353dc8b, 0xa0e38fd6)},
+          {TOBN(0x9a0b85ea, 0x68f7e978), TOBN(0x96ec5682, 0x2ad6d11f),
+           TOBN(0x5e279d6c, 0xe5f6886d), TOBN(0xd3fe03cd, 0x3cb1914d)}},
+         {{TOBN(0xfe541fa4, 0x7ea67c77), TOBN(0x952bd2af, 0xe3ea810c),
+           TOBN(0x791fef56, 0x8d01d374), TOBN(0xa3a1c621, 0x0f11336e)},
+          {TOBN(0x5ad0d5a9, 0xc7ec6d79), TOBN(0xff7038af, 0x3225c342),
+           TOBN(0x003c6689, 0xbc69601b), TOBN(0x25059bc7, 0x45e8747d)}},
+         {{TOBN(0xfa4965b2, 0xf2086fbf), TOBN(0xf6840ea6, 0x86916078),
+           TOBN(0xd7ac7620, 0x70081d6c), TOBN(0xe600da31, 0xb5328645)},
+          {TOBN(0x01916f63, 0x529b8a80), TOBN(0xe80e4858, 0x2d7d6f3e),
+           TOBN(0x29eb0fe8, 0xd664ca7c), TOBN(0xf017637b, 0xe7b43b0c)}},
+         {{TOBN(0x9a75c806, 0x76cb2566), TOBN(0x8f76acb1, 0xb24892d9),
+           TOBN(0x7ae7b9cc, 0x1f08fe45), TOBN(0x19ef7329, 0x6a4907d8)},
+          {TOBN(0x2db4ab71, 0x5f228bf0), TOBN(0xf3cdea39, 0x817032d7),
+           TOBN(0x0b1f482e, 0xdcabe3c0), TOBN(0x3baf76b4, 0xbb86325c)}},
+         {{TOBN(0xd49065e0, 0x10089465), TOBN(0x3bab5d29, 0x8e77c596),
+           TOBN(0x7636c3a6, 0x193dbd95), TOBN(0xdef5d294, 0xb246e499)},
+          {TOBN(0xb22c58b9, 0x286b2475), TOBN(0xa0b93939, 0xcd80862b),
+           TOBN(0x3002c83a, 0xf0992388), TOBN(0x6de01f9b, 0xeacbe14c)}},
+         {{TOBN(0x6aac688e, 0xadd70482), TOBN(0x708de92a, 0x7b4a4e8a),
+           TOBN(0x75b6dd73, 0x758a6eef), TOBN(0xea4bf352, 0x725b3c43)},
+          {TOBN(0x10041f2c, 0x87912868), TOBN(0xb1b1be95, 0xef09297a),
+           TOBN(0x19ae23c5, 0xa9f3860a), TOBN(0xc4f0f839, 0x515dcf4b)}},
+         {{TOBN(0x3c7ecca3, 0x97f6306a), TOBN(0x744c44ae, 0x68a3a4b0),
+           TOBN(0x69cd13a0, 0xb3a1d8a2), TOBN(0x7cad0a1e, 0x5256b578)},
+          {TOBN(0xea653fcd, 0x33791d9e), TOBN(0x9cc2a05d, 0x74b2e05f),
+           TOBN(0x73b391dc, 0xfd7affa2), TOBN(0xddb7091e, 0xb6b05442)}},
+         {{TOBN(0xc71e27bf, 0x8538a5c6), TOBN(0x195c63dd, 0x89abff17),
+           TOBN(0xfd315285, 0x1b71e3da), TOBN(0x9cbdfda7, 0xfa680fa0)},
+          {TOBN(0x9db876ca, 0x849d7eab), TOBN(0xebe2764b, 0x3c273271),
+           TOBN(0x663357e3, 0xf208dcea), TOBN(0x8c5bd833, 0x565b1b70)}},
+         {{TOBN(0xccc3b4f5, 0x9837fc0d), TOBN(0x9b641ba8, 0xa79cf00f),
+           TOBN(0x7428243d, 0xdfdf3990), TOBN(0x83a594c4, 0x020786b1)},
+          {TOBN(0xb712451a, 0x526c4502), TOBN(0x9d39438e, 0x6adb3f93),
+           TOBN(0xfdb261e3, 0xe9ff0ccd), TOBN(0x80344e3c, 0xe07af4c3)}},
+         {{TOBN(0x75900d7c, 0x2fa4f126), TOBN(0x08a3b865, 0x5c99a232),
+           TOBN(0x2478b6bf, 0xdb25e0c3), TOBN(0x482cc2c2, 0x71db2edf)},
+          {TOBN(0x37df7e64, 0x5f321bb8), TOBN(0x8a93821b, 0x9a8005b4),
+           TOBN(0x3fa2f10c, 0xcc8c1958), TOBN(0x0d332218, 0x2c269d0a)}},
+         {{TOBN(0x20ab8119, 0xe246b0e6), TOBN(0xb39781e4, 0xd349fd17),
+           TOBN(0xd293231e, 0xb31aa100), TOBN(0x4b779c97, 0xbb032168)},
+          {TOBN(0x4b3f19e1, 0xc8470500), TOBN(0x45b7efe9, 0x0c4c869d),
+           TOBN(0xdb84f38a, 0xa1a6bbcc), TOBN(0x3b59cb15, 0xb2fddbc1)}},
+         {{TOBN(0xba5514df, 0x3fd165e8), TOBN(0x499fd6a9, 0x061f8811),
+           TOBN(0x72cd1fe0, 0xbfef9f00), TOBN(0x120a4bb9, 0x79ad7e8a)},
+          {TOBN(0xf2ffd095, 0x5f4a5ac5), TOBN(0xcfd174f1, 0x95a7a2f0),
+           TOBN(0xd42301ba, 0x9d17baf1), TOBN(0xd2fa487a, 0x77f22089)}},
+         {{TOBN(0x9cb09efe, 0xb1dc77e1), TOBN(0xe9566939, 0x21c99682),
+           TOBN(0x8c546901, 0x6c6067bb), TOBN(0xfd378574, 0x61c24456)},
+          {TOBN(0x2b6a6cbe, 0x81796b33), TOBN(0x62d550f6, 0x58e87f8b),
+           TOBN(0x1b763e1c, 0x7f1b01b4), TOBN(0x4b93cfea, 0x1b1b5e12)}},
+         {{TOBN(0xb9345238, 0x1d531696), TOBN(0x57201c00, 0x88cdde69),
+           TOBN(0xdde92251, 0x9a86afc7), TOBN(0xe3043895, 0xbd35cea8)},
+          {TOBN(0x7608c1e1, 0x8555970d), TOBN(0x8267dfa9, 0x2535935e),
+           TOBN(0xd4c60a57, 0x322ea38b), TOBN(0xe0bf7977, 0x804ef8b5)}},
+         {{TOBN(0x1a0dab28, 0xc06fece4), TOBN(0xd405991e, 0x94e7b49d),
+           TOBN(0xc542b6d2, 0x706dab28), TOBN(0xcb228da3, 0xa91618fb)},
+          {TOBN(0x224e4164, 0x107d1cea), TOBN(0xeb9fdab3, 0xd0f5d8f1),
+           TOBN(0xc02ba386, 0x0d6e41cd), TOBN(0x676a72c5, 0x9b1f7146)}},
+         {{TOBN(0xffd6dd98, 0x4d6cb00b), TOBN(0xcef9c5ca, 0xde2e8d7c),
+           TOBN(0xa1bbf5d7, 0x641c7936), TOBN(0x1b95b230, 0xee8f772e)},
+          {TOBN(0xf765a92e, 0xe8ac25b1), TOBN(0xceb04cfc, 0x3a18b7c6),
+           TOBN(0x27944cef, 0x0acc8966), TOBN(0xcbb3c957, 0x434c1004)}},
+         {{TOBN(0x9c9971a1, 0xa43ff93c), TOBN(0x5bc2db17, 0xa1e358a9),
+           TOBN(0x45b4862e, 0xa8d9bc82), TOBN(0x70ebfbfb, 0x2201e052)},
+          {TOBN(0xafdf64c7, 0x92871591), TOBN(0xea5bcae6, 0xb42d0219),
+           TOBN(0xde536c55, 0x2ad8f03c), TOBN(0xcd6c3f4d, 0xa76aa33c)}},
+         {{TOBN(0xbeb5f623, 0x0bca6de3), TOBN(0xdd20dd99, 0xb1e706fd),
+           TOBN(0x90b3ff9d, 0xac9059d4), TOBN(0x2d7b2902, 0x7ccccc4e)},
+          {TOBN(0x8a090a59, 0xce98840f), TOBN(0xa5d947e0, 0x8410680a),
+           TOBN(0x49ae346a, 0x923379a5), TOBN(0x7dbc84f9, 0xb28a3156)}},
+         {{TOBN(0xfd40d916, 0x54a1aff2), TOBN(0xabf318ba, 0x3a78fb9b),
+           TOBN(0x50152ed8, 0x3029f95e), TOBN(0x9fc1dd77, 0xc58ad7fa)},
+          {TOBN(0x5fa57915, 0x13595c17), TOBN(0xb9504668, 0x8f62b3a9),
+           TOBN(0x907b5b24, 0xff3055b0), TOBN(0x2e995e35, 0x9a84f125)}},
+         {{TOBN(0x87dacf69, 0x7e9bbcfb), TOBN(0x95d0c1d6, 0xe86d96e3),
+           TOBN(0x65726e3c, 0x2d95a75c), TOBN(0x2c3c9001, 0xacd27f21)},
+          {TOBN(0x1deab561, 0x6c973f57), TOBN(0x108b7e2c, 0xa5221643),
+           TOBN(0x5fee9859, 0xc4ef79d4), TOBN(0xbd62b88a, 0x40d4b8c6)}},
+         {{TOBN(0xb4dd29c4, 0x197c75d6), TOBN(0x266a6df2, 0xb7076feb),
+           TOBN(0x9512d0ea, 0x4bf2df11), TOBN(0x1320c24f, 0x6b0cc9ec)},
+          {TOBN(0x6bb1e0e1, 0x01a59596), TOBN(0x8317c5bb, 0xeff9aaac),
+           TOBN(0x65bb405e, 0x385aa6c9), TOBN(0x613439c1, 0x8f07988f)}},
+         {{TOBN(0xd730049f, 0x16a66e91), TOBN(0xe97f2820, 0xfa1b0e0d),
+           TOBN(0x4131e003, 0x304c28ea), TOBN(0x820ab732, 0x526bac62)},
+          {TOBN(0xb2ac9ef9, 0x28714423), TOBN(0x54ecfffa, 0xadb10cb2),
+           TOBN(0x8781476e, 0xf886a4cc), TOBN(0x4b2c87b5, 0xdb2f8d49)}},
+         {{TOBN(0xe857cd20, 0x0a44295d), TOBN(0x707d7d21, 0x58c6b044),
+           TOBN(0xae8521f9, 0xf596757c), TOBN(0x87448f03, 0x67b2b714)},
+          {TOBN(0x13a9bc45, 0x5ebcd58d), TOBN(0x79bcced9, 0x9122d3c1),
+           TOBN(0x3c644247, 0x9e076642), TOBN(0x0cf22778, 0x2df4767d)}},
+         {{TOBN(0x5e61aee4, 0x71d444b6), TOBN(0x211236bf, 0xc5084a1d),
+           TOBN(0x7e15bc9a, 0x4fd3eaf6), TOBN(0x68df2c34, 0xab622bf5)},
+          {TOBN(0x9e674f0f, 0x59bf4f36), TOBN(0xf883669b, 0xd7f34d73),
+           TOBN(0xc48ac1b8, 0x31497b1d), TOBN(0x323b925d, 0x5106703b)}},
+         {{TOBN(0x22156f42, 0x74082008), TOBN(0xeffc521a, 0xc8482bcb),
+           TOBN(0x5c6831bf, 0x12173479), TOBN(0xcaa2528f, 0xc4739490)},
+          {TOBN(0x84d2102a, 0x8f1b3c4d), TOBN(0xcf64dfc1, 0x2d9bec0d),
+           TOBN(0x433febad, 0x78a546ef), TOBN(0x1f621ec3, 0x7b73cef1)}},
+         {{TOBN(0x6aecd627, 0x37338615), TOBN(0x162082ab, 0x01d8edf6),
+           TOBN(0x833a8119, 0x19e86b66), TOBN(0x6023a251, 0xd299b5db)},
+          {TOBN(0xf5bb0c3a, 0xbbf04b89), TOBN(0x6735eb69, 0xae749a44),
+           TOBN(0xd0e058c5, 0x4713de3b), TOBN(0xfdf2593e, 0x2c3d4ccd)}},
+         {{TOBN(0x1b8f414e, 0xfdd23667), TOBN(0xdd52aaca, 0xfa2015ee),
+           TOBN(0x3e31b517, 0xbd9625ff), TOBN(0x5ec9322d, 0x8db5918c)},
+          {TOBN(0xbc73ac85, 0xa96f5294), TOBN(0x82aa5bf3, 0x61a0666a),
+           TOBN(0x49755810, 0xbf08ac42), TOBN(0xd21cdfd5, 0x891cedfc)}},
+         {{TOBN(0x918cb57b, 0x67f8be10), TOBN(0x365d1a7c, 0x56ffa726),
+           TOBN(0x2435c504, 0x6532de93), TOBN(0xc0fc5e10, 0x2674cd02)},
+          {TOBN(0x6e51fcf8, 0x9cbbb142), TOBN(0x1d436e5a, 0xafc50692),
+           TOBN(0x766bffff, 0x3fbcae22), TOBN(0x3148c2fd, 0xfd55d3b8)}},
+         {{TOBN(0x52c7fdc9, 0x233222fa), TOBN(0x89ff1092, 0xe419fb6b),
+           TOBN(0x3cd6db99, 0x25254977), TOBN(0x2e85a161, 0x1cf12ca7)},
+          {TOBN(0xadd2547c, 0xdc810bc9), TOBN(0xea3f458f, 0x9d257c22),
+           TOBN(0x642c1fbe, 0x27d6b19b), TOBN(0xed07e6b5, 0x140481a6)}},
+         {{TOBN(0x6ada1d42, 0x86d2e0f8), TOBN(0xe5920122, 0x0e8a9fd5),
+           TOBN(0x02c936af, 0x708c1b49), TOBN(0x60f30fee, 0x2b4bfaff)},
+          {TOBN(0x6637ad06, 0x858e6a61), TOBN(0xce4c7767, 0x3fd374d0),
+           TOBN(0x39d54b2d, 0x7188defb), TOBN(0xa8c9d250, 0xf56a6b66)}},
+         {{TOBN(0x58fc0f5e, 0xb24fe1dc), TOBN(0x9eaf9dee, 0x6b73f24c),
+           TOBN(0xa90d588b, 0x33650705), TOBN(0xde5b62c5, 0xaf2ec729)},
+          {TOBN(0x5c72cfae, 0xd3c2b36e), TOBN(0x868c19d5, 0x034435da),
+           TOBN(0x88605f93, 0xe17ee145), TOBN(0xaa60c4ee, 0x77a5d5b1)}},
+         {{TOBN(0xbcf5bfd2, 0x3b60c472), TOBN(0xaf4ef13c, 0xeb1d3049),
+           TOBN(0x373f44fc, 0xe13895c9), TOBN(0xf29b382f, 0x0cbc9822)},
+          {TOBN(0x1bfcb853, 0x73efaef6), TOBN(0xcf56ac9c, 0xa8c96f40),
+           TOBN(0xd7adf109, 0x7a191e24), TOBN(0x98035f44, 0xbf8a8dc2)}},
+         {{TOBN(0xf40a71b9, 0x1e750c84), TOBN(0xc57f7b0c, 0x5dc6c469),
+           TOBN(0x49a0e79c, 0x6fbc19c1), TOBN(0x6b0f5889, 0xa48ebdb8)},
+          {TOBN(0x5d3fd084, 0xa07c4e9f), TOBN(0xc3830111, 0xab27de14),
+           TOBN(0x0e4929fe, 0x33e08dcc), TOBN(0xf4a5ad24, 0x40bb73a3)}},
+         {{TOBN(0xde86c2bf, 0x490f97ca), TOBN(0x288f09c6, 0x67a1ce18),
+           TOBN(0x364bb886, 0x1844478d), TOBN(0x7840fa42, 0xceedb040)},
+          {TOBN(0x1269fdd2, 0x5a631b37), TOBN(0x94761f1e, 0xa47c8b7d),
+           TOBN(0xfc0c2e17, 0x481c6266), TOBN(0x85e16ea2, 0x3daa5fa7)}},
+         {{TOBN(0xccd86033, 0x92491048), TOBN(0x0c2f6963, 0xf4d402d7),
+           TOBN(0x6336f7df, 0xdf6a865c), TOBN(0x0a2a463c, 0xb5c02a87)},
+          {TOBN(0xb0e29be7, 0xbf2f12ee), TOBN(0xf0a22002, 0x66bad988),
+           TOBN(0x27f87e03, 0x9123c1d7), TOBN(0x21669c55, 0x328a8c98)}},
+         {{TOBN(0x186b9803, 0x92f14529), TOBN(0xd3d056cc, 0x63954df3),
+           TOBN(0x2f03fd58, 0x175a46f6), TOBN(0x63e34ebe, 0x11558558)},
+          {TOBN(0xe13fedee, 0x5b80cfa5), TOBN(0xe872a120, 0xd401dbd1),
+           TOBN(0x52657616, 0xe8a9d667), TOBN(0xbc8da4b6, 0xe08d6693)}},
+         {{TOBN(0x370fb9bb, 0x1b703e75), TOBN(0x6773b186, 0xd4338363),
+           TOBN(0x18dad378, 0xecef7bff), TOBN(0xaac787ed, 0x995677da)},
+          {TOBN(0x4801ea8b, 0x0437164b), TOBN(0xf430ad20, 0x73fe795e),
+           TOBN(0xb164154d, 0x8ee5eb73), TOBN(0x0884ecd8, 0x108f7c0e)}},
+         {{TOBN(0x0e6ec096, 0x5f520698), TOBN(0x640631fe, 0x44f7b8d9),
+           TOBN(0x92fd34fc, 0xa35a68b9), TOBN(0x9c5a4b66, 0x4d40cf4e)},
+          {TOBN(0x949454bf, 0x80b6783d), TOBN(0x80e701fe, 0x3a320a10),
+           TOBN(0x8d1a564a, 0x1a0a39b2), TOBN(0x1436d53d, 0x320587db)}},
+         {{TOBN(0xf5096e6d, 0x6556c362), TOBN(0xbc23a3c0, 0xe2455d7e),
+           TOBN(0x3a7aee54, 0x807230f9), TOBN(0x9ba1cfa6, 0x22ae82fd)},
+          {TOBN(0x833a057a, 0x99c5d706), TOBN(0x8be85f4b, 0x842315c9),
+           TOBN(0xd083179a, 0x66a72f12), TOBN(0x2fc77d5d, 0xcdcc73cd)}},
+         {{TOBN(0x22b88a80, 0x5616ee30), TOBN(0xfb09548f, 0xe7ab1083),
+           TOBN(0x8ad6ab0d, 0x511270cd), TOBN(0x61f6c57a, 0x6924d9ab)},
+          {TOBN(0xa0f7bf72, 0x90aecb08), TOBN(0x849f87c9, 0x0df784a4),
+           TOBN(0x27c79c15, 0xcfaf1d03), TOBN(0xbbf9f675, 0xc463face)}},
+         {{TOBN(0x91502c65, 0x765ba543), TOBN(0x18ce3cac, 0x42ea60dd),
+           TOBN(0xe5cee6ac, 0x6e43ecb3), TOBN(0x63e4e910, 0x68f2aeeb)},
+          {TOBN(0x26234fa3, 0xc85932ee), TOBN(0x96883e8b, 0x4c90c44d),
+           TOBN(0x29b9e738, 0xa18a50f6), TOBN(0xbfc62b2a, 0x3f0420df)}},
+         {{TOBN(0xd22a7d90, 0x6d3e1fa9), TOBN(0x17115618, 0xfe05b8a3),
+           TOBN(0x2a0c9926, 0xbb2b9c01), TOBN(0xc739fcc6, 0xe07e76a2)},
+          {TOBN(0x540e9157, 0x165e439a), TOBN(0x06353a62, 0x6a9063d8),
+           TOBN(0x84d95594, 0x61e927a3), TOBN(0x013b9b26, 0xe2e0be7f)}},
+         {{TOBN(0x4feaec3b, 0x973497f1), TOBN(0x15c0f94e, 0x093ebc2d),
+           TOBN(0x6af5f227, 0x33af0583), TOBN(0x0c2af206, 0xc61f3340)},
+          {TOBN(0xd25dbdf1, 0x4457397c), TOBN(0x2e8ed017, 0xcabcbae0),
+           TOBN(0xe3010938, 0xc2815306), TOBN(0xbaa99337, 0xe8c6cd68)}},
+         {{TOBN(0x08513182, 0x3b0ec7de), TOBN(0x1e1b822b, 0x58df05df),
+           TOBN(0x5c14842f, 0xa5c3b683), TOBN(0x98fe977e, 0x3eba34ce)},
+          {TOBN(0xfd2316c2, 0x0d5e8873), TOBN(0xe48d839a, 0xbd0d427d),
+           TOBN(0x495b2218, 0x623fc961), TOBN(0x24ee56e7, 0xb46fba5e)}},
+         {{TOBN(0x9184a55b, 0x91e4de58), TOBN(0xa7488ca5, 0xdfdea288),
+           TOBN(0xa723862e, 0xa8dcc943), TOBN(0x92d762b2, 0x849dc0fc)},
+          {TOBN(0x3c444a12, 0x091ff4a9), TOBN(0x581113fa, 0x0cada274),
+           TOBN(0xb9de0a45, 0x30d8eae2), TOBN(0x5e0fcd85, 0xdf6b41ea)}},
+         {{TOBN(0x6233ea68, 0xc094dbb5), TOBN(0xb77d062e, 0xd968d410),
+           TOBN(0x3e719bbc, 0x58b3002d), TOBN(0x68e7dd3d, 0x3dc49d58)},
+          {TOBN(0x8d825740, 0x013a5e58), TOBN(0x21311747, 0x3c9e3c1b),
+           TOBN(0x0cb0a2a7, 0x7c99b6ab), TOBN(0x5c48a3b3, 0xc2f888f2)}}},
+        {{{TOBN(0xc7913e91, 0x991724f3), TOBN(0x5eda799c, 0x39cbd686),
+           TOBN(0xddb595c7, 0x63d4fc1e), TOBN(0x6b63b80b, 0xac4fed54)},
+          {TOBN(0x6ea0fc69, 0x7e5fb516), TOBN(0x737708ba, 0xd0f1c964),
+           TOBN(0x9628745f, 0x11a92ca5), TOBN(0x61f37958, 0x9a86967a)}},
+         {{TOBN(0x9af39b2c, 0xaa665072), TOBN(0x78322fa4, 0xefd324ef),
+           TOBN(0x3d153394, 0xc327bd31), TOBN(0x81d5f271, 0x3129dab0)},
+          {TOBN(0xc72e0c42, 0xf48027f5), TOBN(0xaa40cdbc, 0x8536e717),
+           TOBN(0xf45a657a, 0x2d369d0f), TOBN(0xb03bbfc4, 0xea7f74e6)}},
+         {{TOBN(0x46a8c418, 0x0d738ded), TOBN(0x6f1a5bb0, 0xe0de5729),
+           TOBN(0xf10230b9, 0x8ba81675), TOBN(0x32c6f30c, 0x112b33d4)},
+          {TOBN(0x7559129d, 0xd8fffb62), TOBN(0x6a281b47, 0xb459bf05),
+           TOBN(0x77c1bd3a, 0xfa3b6776), TOBN(0x0709b380, 0x7829973a)}},
+         {{TOBN(0x8c26b232, 0xa3326505), TOBN(0x38d69272, 0xee1d41bf),
+           TOBN(0x0459453e, 0xffe32afa), TOBN(0xce8143ad, 0x7cb3ea87)},
+          {TOBN(0x932ec1fa, 0x7e6ab666), TOBN(0x6cd2d230, 0x22286264),
+           TOBN(0x459a46fe, 0x6736f8ed), TOBN(0x50bf0d00, 0x9eca85bb)}},
+         {{TOBN(0x0b825852, 0x877a21ec), TOBN(0x300414a7, 0x0f537a94),
+           TOBN(0x3f1cba40, 0x21a9a6a2), TOBN(0x50824eee, 0x76943c00)},
+          {TOBN(0xa0dbfcec, 0xf83cba5d), TOBN(0xf9538148, 0x93b4f3c0),
+           TOBN(0x61744162, 0x48f24dd7), TOBN(0x5322d64d, 0xe4fb09dd)}},
+         {{TOBN(0x57447384, 0x3d9325f3), TOBN(0xa9bef2d0, 0xf371cb84),
+           TOBN(0x77d2188b, 0xa61e36c5), TOBN(0xbbd6a7d7, 0xc602df72)},
+          {TOBN(0xba3aa902, 0x8f61bc0b), TOBN(0xf49085ed, 0x6ed0b6a1),
+           TOBN(0x8bc625d6, 0xae6e8298), TOBN(0x832b0b1d, 0xa2e9c01d)}},
+         {{TOBN(0xa337c447, 0xf1f0ced1), TOBN(0x800cc793, 0x9492dd2b),
+           TOBN(0x4b93151d, 0xbea08efa), TOBN(0x820cf3f8, 0xde0a741e)},
+          {TOBN(0xff1982dc, 0x1c0f7d13), TOBN(0xef921960, 0x84dde6ca),
+           TOBN(0x1ad7d972, 0x45f96ee3), TOBN(0x319c8dbe, 0x29dea0c7)}},
+         {{TOBN(0xd3ea3871, 0x7b82b99b), TOBN(0x75922d4d, 0x470eb624),
+           TOBN(0x8f66ec54, 0x3b95d466), TOBN(0x66e673cc, 0xbee1e346)},
+          {TOBN(0x6afe67c4, 0xb5f2b89a), TOBN(0x3de9c1e6, 0x290e5cd3),
+           TOBN(0x8c278bb6, 0x310a2ada), TOBN(0x420fa384, 0x0bdb323b)}},
+         {{TOBN(0x0ae1d63b, 0x0eb919b0), TOBN(0xd74ee51d, 0xa74b9620),
+           TOBN(0x395458d0, 0xa674290c), TOBN(0x324c930f, 0x4620a510)},
+          {TOBN(0x2d1f4d19, 0xfbac27d4), TOBN(0x4086e8ca, 0x9bedeeac),
+           TOBN(0x0cdd211b, 0x9b679ab8), TOBN(0x5970167d, 0x7090fec4)}},
+         {{TOBN(0x3420f2c9, 0xfaf1fc63), TOBN(0x616d333a, 0x328c8bb4),
+           TOBN(0x7d65364c, 0x57f1fe4a), TOBN(0x9343e877, 0x55e5c73a)},
+          {TOBN(0x5795176b, 0xe970e78c), TOBN(0xa36ccebf, 0x60533627),
+           TOBN(0xfc7c7380, 0x09cdfc1b), TOBN(0xb39a2afe, 0xb3fec326)}},
+         {{TOBN(0xb7ff1ba1, 0x6224408a), TOBN(0xcc856e92, 0x247cfc5e),
+           TOBN(0x01f102e7, 0xc18bc493), TOBN(0x4613ab74, 0x2091c727)},
+          {TOBN(0xaa25e89c, 0xc420bf2b), TOBN(0x00a53176, 0x90337ec2),
+           TOBN(0xd2be9f43, 0x7d025fc7), TOBN(0x3316fb85, 0x6e6fe3dc)}},
+         {{TOBN(0x27520af5, 0x9ac50814), TOBN(0xfdf95e78, 0x9a8e4223),
+           TOBN(0xb7e7df2a, 0x56bec5a0), TOBN(0xf7022f7d, 0xdf159e5d)},
+          {TOBN(0x93eeeab1, 0xcac1fe8f), TOBN(0x8040188c, 0x37451168),
+           TOBN(0x7ee8aa8a, 0xd967dce6), TOBN(0xfa0e79e7, 0x3abc9299)}},
+         {{TOBN(0x67332cfc, 0x2064cfd1), TOBN(0x339c31de, 0xb0651934),
+           TOBN(0x719b28d5, 0x2a3bcbea), TOBN(0xee74c82b, 0x9d6ae5c6)},
+          {TOBN(0x0927d05e, 0xbaf28ee6), TOBN(0x82cecf2c, 0x9d719028),
+           TOBN(0x0b0d353e, 0xddb30289), TOBN(0xfe4bb977, 0xfddb2e29)}},
+         {{TOBN(0xbb5bb990, 0x640bfd9e), TOBN(0xd226e277, 0x82f62108),
+           TOBN(0x4bf00985, 0x02ffdd56), TOBN(0x7756758a, 0x2ca1b1b5)},
+          {TOBN(0xc32b62a3, 0x5285fe91), TOBN(0xedbc546a, 0x8c9cd140),
+           TOBN(0x1e47a013, 0xaf5cb008), TOBN(0xbca7e720, 0x073ce8f2)}},
+         {{TOBN(0xe10b2ab8, 0x17a91cae), TOBN(0xb89aab65, 0x08e27f63),
+           TOBN(0x7b3074a7, 0xdba3ddf9), TOBN(0x1c20ce09, 0x330c2972)},
+          {TOBN(0x6b9917b4, 0x5fcf7e33), TOBN(0xe6793743, 0x945ceb42),
+           TOBN(0x18fc2215, 0x5c633d19), TOBN(0xad1adb3c, 0xc7485474)}},
+         {{TOBN(0x646f9679, 0x6424c49b), TOBN(0xf888dfe8, 0x67c241c9),
+           TOBN(0xe12d4b93, 0x24f68b49), TOBN(0x9a6b62d8, 0xa571df20)},
+          {TOBN(0x81b4b26d, 0x179483cb), TOBN(0x666f9632, 0x9511fae2),
+           TOBN(0xd281b3e4, 0xd53aa51f), TOBN(0x7f96a765, 0x7f3dbd16)}},
+         {{TOBN(0xa7f8b5bf, 0x074a30ce), TOBN(0xd7f52107, 0x005a32e6),
+           TOBN(0x6f9e0907, 0x50237ed4), TOBN(0x2f21da47, 0x8096fa2b)},
+          {TOBN(0xf3e19cb4, 0xeec863a0), TOBN(0xd18f77fd, 0x9527620a),
+           TOBN(0x9505c81c, 0x407c1cf8), TOBN(0x9998db4e, 0x1b6ec284)}},
+         {{TOBN(0x7e3389e5, 0xc247d44d), TOBN(0x12507141, 0x3f4f3d80),
+           TOBN(0xd4ba0110, 0x4a78a6c7), TOBN(0x312874a0, 0x767720be)},
+          {TOBN(0xded059a6, 0x75944370), TOBN(0xd6123d90, 0x3b2c0bdd),
+           TOBN(0xa56b717b, 0x51c108e3), TOBN(0x9bb7940e, 0x070623e9)}},
+         {{TOBN(0x794e2d59, 0x84ac066c), TOBN(0xf5954a92, 0xe68c69a0),
+           TOBN(0x28c52458, 0x4fd99dcc), TOBN(0x60e639fc, 0xb1012517)},
+          {TOBN(0xc2e60125, 0x7de79248), TOBN(0xe9ef6404, 0xf12fc6d7),
+           TOBN(0x4c4f2808, 0x2a3b5d32), TOBN(0x865ad32e, 0xc768eb8a)}},
+         {{TOBN(0xac02331b, 0x13fb70b6), TOBN(0x037b44c1, 0x95599b27),
+           TOBN(0x1a860fc4, 0x60bd082c), TOBN(0xa2e25745, 0xc980cd01)},
+          {TOBN(0xee3387a8, 0x1da0263e), TOBN(0x931bfb95, 0x2d10f3d6),
+           TOBN(0x5b687270, 0xa1f24a32), TOBN(0xf140e65d, 0xca494b86)}},
+         {{TOBN(0x4f4ddf91, 0xb2f1ac7a), TOBN(0xf99eaabb, 0x760fee27),
+           TOBN(0x57f4008a, 0x49c228e5), TOBN(0x090be440, 0x1cf713bb)},
+          {TOBN(0xac91fbe4, 0x5004f022), TOBN(0xd838c2c2, 0x569e1af6),
+           TOBN(0xd6c7d20b, 0x0f1daaa5), TOBN(0xaa063ac1, 0x1bbb02c0)}},
+         {{TOBN(0x0938a422, 0x59558a78), TOBN(0x5343c669, 0x8435da2f),
+           TOBN(0x96f67b18, 0x034410dc), TOBN(0x7cc1e424, 0x84510804)},
+          {TOBN(0x86a1543f, 0x16dfbb7d), TOBN(0x921fa942, 0x5b5bd592),
+           TOBN(0x9dcccb6e, 0xb33dd03c), TOBN(0x8581ddd9, 0xb843f51e)}},
+         {{TOBN(0x54935fcb, 0x81d73c9e), TOBN(0x6d07e979, 0x0a5e97ab),
+           TOBN(0x4dc7b30a, 0xcf3a6bab), TOBN(0x147ab1f3, 0x170bee11)},
+          {TOBN(0x0aaf8e3d, 0x9fafdee4), TOBN(0xfab3dbcb, 0x538a8b95),
+           TOBN(0x405df4b3, 0x6ef13871), TOBN(0xf1f4e9cb, 0x088d5a49)}},
+         {{TOBN(0x9bcd24d3, 0x66b33f1d), TOBN(0x3b97b820, 0x5ce445c0),
+           TOBN(0xe2926549, 0xba93ff61), TOBN(0xd9c341ce, 0x4dafe616)},
+          {TOBN(0xfb30a76e, 0x16efb6f3), TOBN(0xdf24b8ca, 0x605b953c),
+           TOBN(0x8bd52afe, 0xc2fffb9f), TOBN(0xbbac5ff7, 0xe19d0b96)}},
+         {{TOBN(0x43c01b87, 0x459afccd), TOBN(0x6bd45143, 0xb7432652),
+           TOBN(0x84734530, 0x55b5d78e), TOBN(0x81088fdb, 0x1554ba7d)},
+          {TOBN(0xada0a52c, 0x1e269375), TOBN(0xf9f037c4, 0x2dc5ec10),
+           TOBN(0xc0660607, 0x94bfbc11), TOBN(0xc0a630bb, 0xc9c40d2f)}},
+         {{TOBN(0x5efc797e, 0xab64c31e), TOBN(0xffdb1dab, 0x74507144),
+           TOBN(0xf6124287, 0x1ca6790c), TOBN(0xe9609d81, 0xe69bf1bf)},
+          {TOBN(0xdb898595, 0x00d24fc9), TOBN(0x9c750333, 0xe51fb417),
+           TOBN(0x51830a91, 0xfef7bbde), TOBN(0x0ce67dc8, 0x945f585c)}},
+         {{TOBN(0x9a730ed4, 0x4763eb50), TOBN(0x24a0e221, 0xc1ab0d66),
+           TOBN(0x643b6393, 0x648748f3), TOBN(0x1982daa1, 0x6d3c6291)},
+          {TOBN(0x6f00a9f7, 0x8bbc5549), TOBN(0x7a1783e1, 0x7f36384e),
+           TOBN(0xe8346323, 0xde977f50), TOBN(0x91ab688d, 0xb245502a)}},
+         {{TOBN(0x331ab6b5, 0x6d0bdd66), TOBN(0x0a6ef32e, 0x64b71229),
+           TOBN(0x1028150e, 0xfe7c352f), TOBN(0x27e04350, 0xce7b39d3)},
+          {TOBN(0x2a3c8acd, 0xc1070c82), TOBN(0xfb2034d3, 0x80c9feef),
+           TOBN(0x2d729621, 0x709f3729), TOBN(0x8df290bf, 0x62cb4549)}},
+         {{TOBN(0x02f99f33, 0xfc2e4326), TOBN(0x3b30076d, 0x5eddf032),
+           TOBN(0xbb21f8cf, 0x0c652fb5), TOBN(0x314fb49e, 0xed91cf7b)},
+          {TOBN(0xa013eca5, 0x2f700750), TOBN(0x2b9e3c23, 0x712a4575),
+           TOBN(0xe5355557, 0xaf30fbb0), TOBN(0x1ada3516, 0x7c77e771)}},
+         {{TOBN(0x45f6ecb2, 0x7b135670), TOBN(0xe85d19df, 0x7cfc202e),
+           TOBN(0x0f1b50c7, 0x58d1be9f), TOBN(0x5ebf2c0a, 0xead2e344)},
+          {TOBN(0x1531fe4e, 0xabc199c9), TOBN(0xc7032592, 0x56bab0ae),
+           TOBN(0x16ab2e48, 0x6c1fec54), TOBN(0x0f87fda8, 0x04280188)}},
+         {{TOBN(0xdc9f46fc, 0x609e4a74), TOBN(0x2a44a143, 0xba667f91),
+           TOBN(0xbc3d8b95, 0xb4d83436), TOBN(0xa01e4bd0, 0xc7bd2958)},
+          {TOBN(0x7b182932, 0x73483c90), TOBN(0xa79c6aa1, 0xa7c7b598),
+           TOBN(0xbf3983c6, 0xeaaac07e), TOBN(0x8f18181e, 0x96e0d4e6)}},
+         {{TOBN(0x8553d37c, 0x051af62b), TOBN(0xe9a998eb, 0x0bf94496),
+           TOBN(0xe0844f9f, 0xb0d59aa1), TOBN(0x983fd558, 0xe6afb813)},
+          {TOBN(0x9670c0ca, 0x65d69804), TOBN(0x732b22de, 0x6ea5ff2d),
+           TOBN(0xd7640ba9, 0x5fd8623b), TOBN(0x9f619163, 0xa6351782)}},
+         {{TOBN(0x0bfc27ee, 0xacee5043), TOBN(0xae419e73, 0x2eb10f02),
+           TOBN(0x19c028d1, 0x8943fb05), TOBN(0x71f01cf7, 0xff13aa2a)},
+          {TOBN(0x7790737e, 0x8887a132), TOBN(0x67513309, 0x66318410),
+           TOBN(0x9819e8a3, 0x7ddb795e), TOBN(0xfecb8ef5, 0xdad100b2)}},
+         {{TOBN(0x59f74a22, 0x3021926a), TOBN(0xb7c28a49, 0x6f9b4c1c),
+           TOBN(0xed1a733f, 0x912ad0ab), TOBN(0x42a910af, 0x01a5659c)},
+          {TOBN(0x3842c6e0, 0x7bd68cab), TOBN(0x2b57fa38, 0x76d70ac8),
+           TOBN(0x8a6707a8, 0x3c53aaeb), TOBN(0x62c1c510, 0x65b4db18)}},
+         {{TOBN(0x8de2c1fb, 0xb2d09dc7), TOBN(0xc3dfed12, 0x266bd23b),
+           TOBN(0x927d039b, 0xd5b27db6), TOBN(0x2fb2f0f1, 0x103243da)},
+          {TOBN(0xf855a07b, 0x80be7399), TOBN(0xed9327ce, 0x1f9f27a8),
+           TOBN(0xa0bd99c7, 0x729bdef7), TOBN(0x2b67125e, 0x28250d88)}},
+         {{TOBN(0x784b26e8, 0x8670ced7), TOBN(0xe3dfe41f, 0xc31bd3b4),
+           TOBN(0x9e353a06, 0xbcc85cbc), TOBN(0x302e2909, 0x60178a9d)},
+          {TOBN(0x860abf11, 0xa6eac16e), TOBN(0x76447000, 0xaa2b3aac),
+           TOBN(0x46ff9d19, 0x850afdab), TOBN(0x35bdd6a5, 0xfdb2d4c1)}},
+         {{TOBN(0xe82594b0, 0x7e5c9ce9), TOBN(0x0f379e53, 0x20af346e),
+           TOBN(0x608b31e3, 0xbc65ad4a), TOBN(0x710c6b12, 0x267c4826)},
+          {TOBN(0x51c966f9, 0x71954cf1), TOBN(0xb1cec793, 0x0d0aa215),
+           TOBN(0x1f155989, 0x86bd23a8), TOBN(0xae2ff99c, 0xf9452e86)}},
+         {{TOBN(0xd8dd953c, 0x340ceaa2), TOBN(0x26355275, 0x2e2e9333),
+           TOBN(0x15d4e5f9, 0x8586f06d), TOBN(0xd6bf94a8, 0xf7cab546)},
+          {TOBN(0x33c59a0a, 0xb76a9af0), TOBN(0x52740ab3, 0xba095af7),
+           TOBN(0xc444de8a, 0x24389ca0), TOBN(0xcc6f9863, 0x706da0cb)}},
+         {{TOBN(0xb5a741a7, 0x6b2515cf), TOBN(0x71c41601, 0x9585c749),
+           TOBN(0x78350d4f, 0xe683de97), TOBN(0x31d61524, 0x63d0b5f5)},
+          {TOBN(0x7a0cc5e1, 0xfbce090b), TOBN(0xaac927ed, 0xfbcb2a5b),
+           TOBN(0xe920de49, 0x20d84c35), TOBN(0x8c06a0b6, 0x22b4de26)}},
+         {{TOBN(0xd34dd58b, 0xafe7ddf3), TOBN(0x55851fed, 0xc1e6e55b),
+           TOBN(0xd1395616, 0x960696e7), TOBN(0x940304b2, 0x5f22705f)},
+          {TOBN(0x6f43f861, 0xb0a2a860), TOBN(0xcf121282, 0x0e7cc981),
+           TOBN(0x12186212, 0x0ab64a96), TOBN(0x09215b9a, 0xb789383c)}},
+         {{TOBN(0x311eb305, 0x37387c09), TOBN(0xc5832fce, 0xf03ee760),
+           TOBN(0x30358f58, 0x32f7ea19), TOBN(0xe01d3c34, 0x91d53551)},
+          {TOBN(0x1ca5ee41, 0xda48ea80), TOBN(0x34e71e8e, 0xcf4fa4c1),
+           TOBN(0x312abd25, 0x7af1e1c7), TOBN(0xe3afcdeb, 0x2153f4a5)}},
+         {{TOBN(0x9d5c84d7, 0x00235e9a), TOBN(0x0308d3f4, 0x8c4c836f),
+           TOBN(0xc0a66b04, 0x89332de5), TOBN(0x610dd399, 0x89e566ef)},
+          {TOBN(0xf8eea460, 0xd1ac1635), TOBN(0x84cbb3fb, 0x20a2c0df),
+           TOBN(0x40afb488, 0xe74a48c5), TOBN(0x29738198, 0xd326b150)}},
+         {{TOBN(0x2a17747f, 0xa6d74081), TOBN(0x60ea4c05, 0x55a26214),
+           TOBN(0x53514bb4, 0x1f88c5fe), TOBN(0xedd64567, 0x7e83426c)},
+          {TOBN(0xd5d6cbec, 0x96460b25), TOBN(0xa12fd0ce, 0x68dc115e),
+           TOBN(0xc5bc3ed2, 0x697840ea), TOBN(0x969876a8, 0xa6331e31)}},
+         {{TOBN(0x60c36217, 0x472ff580), TOBN(0xf4229705, 0x4ad41393),
+           TOBN(0x4bd99ef0, 0xa03b8b92), TOBN(0x501c7317, 0xc144f4f6)},
+          {TOBN(0x159009b3, 0x18464945), TOBN(0x6d5e594c, 0x74c5c6be),
+           TOBN(0x2d587011, 0x321a3660), TOBN(0xd1e184b1, 0x3898d022)}},
+         {{TOBN(0x5ba04752, 0x4c6a7e04), TOBN(0x47fa1e2b, 0x45550b65),
+           TOBN(0x9419daf0, 0x48c0a9a5), TOBN(0x66362953, 0x7c243236)},
+          {TOBN(0xcd0744b1, 0x5cb12a88), TOBN(0x561b6f9a, 0x2b646188),
+           TOBN(0x599415a5, 0x66c2c0c0), TOBN(0xbe3f0859, 0x0f83f09a)}},
+         {{TOBN(0x9141c5be, 0xb92041b8), TOBN(0x01ae38c7, 0x26477d0d),
+           TOBN(0xca8b71f3, 0xd12c7a94), TOBN(0xfab5b31f, 0x765c70db)},
+          {TOBN(0x76ae7492, 0x487443e9), TOBN(0x8595a310, 0x990d1349),
+           TOBN(0xf8dbeda8, 0x7d460a37), TOBN(0x7f7ad082, 0x1e45a38f)}},
+         {{TOBN(0xed1d4db6, 0x1059705a), TOBN(0xa3dd492a, 0xe6b9c697),
+           TOBN(0x4b92ee3a, 0x6eb38bd5), TOBN(0xbab2609d, 0x67cc0bb7)},
+          {TOBN(0x7fc4fe89, 0x6e70ee82), TOBN(0xeff2c56e, 0x13e6b7e3),
+           TOBN(0x9b18959e, 0x34d26fca), TOBN(0x2517ab66, 0x889d6b45)}},
+         {{TOBN(0xf167b4e0, 0xbdefdd4f), TOBN(0x69958465, 0xf366e401),
+           TOBN(0x5aa368ab, 0xa73bbec0), TOBN(0x12148709, 0x7b240c21)},
+          {TOBN(0x378c3233, 0x18969006), TOBN(0xcb4d73ce, 0xe1fe53d1),
+           TOBN(0x5f50a80e, 0x130c4361), TOBN(0xd67f5951, 0x7ef5212b)}},
+         {{TOBN(0xf145e21e, 0x9e70c72e), TOBN(0xb2e52e29, 0x5566d2fb),
+           TOBN(0x44eaba4a, 0x032397f5), TOBN(0x5e56937b, 0x7e31a7de)},
+          {TOBN(0x68dcf517, 0x456c61e1), TOBN(0xbc2e954a, 0xa8b0a388),
+           TOBN(0xe3552fa7, 0x60a8b755), TOBN(0x03442dae, 0x73ad0cde)}},
+         {{TOBN(0x37ffe747, 0xceb26210), TOBN(0x983545e8, 0x787baef9),
+           TOBN(0x8b8c8535, 0x86a3de31), TOBN(0xc621dbcb, 0xfacd46db)},
+          {TOBN(0x82e442e9, 0x59266fbb), TOBN(0xa3514c37, 0x339d471c),
+           TOBN(0x3a11b771, 0x62cdad96), TOBN(0xf0cb3b3c, 0xecf9bdf0)}},
+         {{TOBN(0x3fcbdbce, 0x478e2135), TOBN(0x7547b5cf, 0xbda35342),
+           TOBN(0xa97e81f1, 0x8a677af6), TOBN(0xc8c2bf83, 0x28817987)},
+          {TOBN(0xdf07eaaf, 0x45580985), TOBN(0xc68d1f05, 0xc93b45cb),
+           TOBN(0x106aa2fe, 0xc77b4cac), TOBN(0x4c1d8afc, 0x04a7ae86)}},
+         {{TOBN(0xdb41c3fd, 0x9eb45ab2), TOBN(0x5b234b5b, 0xd4b22e74),
+           TOBN(0xda253dec, 0xf215958a), TOBN(0x67e0606e, 0xa04edfa0)},
+          {TOBN(0xabbbf070, 0xef751b11), TOBN(0xf352f175, 0xf6f06dce),
+           TOBN(0xdfc4b6af, 0x6839f6b4), TOBN(0x53ddf9a8, 0x9959848e)}},
+         {{TOBN(0xda49c379, 0xc21520b0), TOBN(0x90864ff0, 0xdbd5d1b6),
+           TOBN(0x2f055d23, 0x5f49c7f7), TOBN(0xe51e4e6a, 0xa796b2d8)},
+          {TOBN(0xc361a67f, 0x5c9dc340), TOBN(0x5ad53c37, 0xbca7c620),
+           TOBN(0xda1d6588, 0x32c756d0), TOBN(0xad60d911, 0x8bb67e13)}},
+         {{TOBN(0xd6c47bdf, 0x0eeec8c6), TOBN(0x4a27fec1, 0x078a1821),
+           TOBN(0x081f7415, 0xc3099524), TOBN(0x8effdf0b, 0x82cd8060)},
+          {TOBN(0xdb70ec1c, 0x65842df8), TOBN(0x8821b358, 0xd319a901),
+           TOBN(0x72ee56ee, 0xde42b529), TOBN(0x5bb39592, 0x236e4286)}},
+         {{TOBN(0xd1183316, 0xfd6f7140), TOBN(0xf9fadb5b, 0xbd8e81f7),
+           TOBN(0x701d5e0c, 0x5a02d962), TOBN(0xfdee4dbf, 0x1b601324)},
+          {TOBN(0xbed17407, 0x35d7620e), TOBN(0x04e3c2c3, 0xf48c0012),
+           TOBN(0x9ee29da7, 0x3455449a), TOBN(0x562cdef4, 0x91a836c4)}},
+         {{TOBN(0x8f682a5f, 0x47701097), TOBN(0x617125d8, 0xff88d0c2),
+           TOBN(0x948fda24, 0x57bb86dd), TOBN(0x348abb8f, 0x289f7286)},
+          {TOBN(0xeb10eab5, 0x99d94bbd), TOBN(0xd51ba28e, 0x4684d160),
+           TOBN(0xabe0e51c, 0x30c8f41a), TOBN(0x66588b45, 0x13254f4a)}},
+         {{TOBN(0x147ebf01, 0xfad097a5), TOBN(0x49883ea8, 0x610e815d),
+           TOBN(0xe44d60ba, 0x8a11de56), TOBN(0xa970de6e, 0x827a7a6d)},
+          {TOBN(0x2be41424, 0x5e17fc19), TOBN(0xd833c657, 0x01214057),
+           TOBN(0x1375813b, 0x363e723f), TOBN(0x6820bb88, 0xe6a52e9b)}},
+         {{TOBN(0x7e7f6970, 0xd875d56a), TOBN(0xd6a0a9ac, 0x51fbf6bf),
+           TOBN(0x54ba8790, 0xa3083c12), TOBN(0xebaeb23d, 0x6ae7eb64)},
+          {TOBN(0xa8685c3a, 0xb99a907a), TOBN(0xf1e74550, 0x026bf40b),
+           TOBN(0x7b73a027, 0xc802cd9e), TOBN(0x9a8a927c, 0x4fef4635)}},
+         {{TOBN(0xe1b6f60c, 0x08191224), TOBN(0xc4126ebb, 0xde4ec091),
+           TOBN(0xe1dff4dc, 0x4ae38d84), TOBN(0xde3f57db, 0x4f2ef985)},
+          {TOBN(0x34964337, 0xd446a1dd), TOBN(0x7bf217a0, 0x859e77f6),
+           TOBN(0x8ff10527, 0x8e1d13f5), TOBN(0xa304ef03, 0x74eeae27)}},
+         {{TOBN(0xfc6f5e47, 0xd19dfa5a), TOBN(0xdb007de3, 0x7fad982b),
+           TOBN(0x28205ad1, 0x613715f5), TOBN(0x251e6729, 0x7889529e)},
+          {TOBN(0x72705184, 0x1ae98e78), TOBN(0xf818537d, 0x271cac32),
+           TOBN(0xc8a15b7e, 0xb7f410f5), TOBN(0xc474356f, 0x81f62393)}},
+         {{TOBN(0x92dbdc5a, 0xc242316b), TOBN(0xabe060ac, 0xdbf4aff5),
+           TOBN(0x6e8c38fe, 0x909a8ec6), TOBN(0x43e514e5, 0x6116cb94)},
+          {TOBN(0x2078fa38, 0x07d784f9), TOBN(0x1161a880, 0xf4b5b357),
+           TOBN(0x5283ce79, 0x13adea3d), TOBN(0x0756c3e6, 0xcc6a910b)}},
+         {{TOBN(0x60bcfe01, 0xaaa79697), TOBN(0x04a73b29, 0x56391db1),
+           TOBN(0xdd8dad47, 0x189b45a0), TOBN(0xbfac0dd0, 0x48d5b8d9)},
+          {TOBN(0x34ab3af5, 0x7d3d2ec2), TOBN(0x6fa2fc2d, 0x207bd3af),
+           TOBN(0x9ff40092, 0x66550ded), TOBN(0x719b3e87, 0x1fd5b913)}},
+         {{TOBN(0xa573a496, 0x6d17fbc7), TOBN(0x0cd1a70a, 0x73d2b24e),
+           TOBN(0x34e2c5ca, 0xb2676937), TOBN(0xe7050b06, 0xbf669f21)},
+          {TOBN(0xfbe948b6, 0x1ede9046), TOBN(0xa0530051, 0x97662659),
+           TOBN(0x58cbd4ed, 0xf10124c5), TOBN(0xde2646e4, 0xdd6c06c8)}},
+         {{TOBN(0x332f8108, 0x8cad38c0), TOBN(0x471b7e90, 0x6bd68ae2),
+           TOBN(0x56ac3fb2, 0x0d8e27a3), TOBN(0xb54660db, 0x136b4b0d)},
+          {TOBN(0x123a1e11, 0xa6fd8de4), TOBN(0x44dbffea, 0xa37799ef),
+           TOBN(0x4540b977, 0xce6ac17c), TOBN(0x495173a8, 0xaf60acef)}}},
+        {{{TOBN(0x9ebb284d, 0x391c2a82), TOBN(0xbcdd4863, 0x158308e8),
+           TOBN(0x006f16ec, 0x83f1edca), TOBN(0xa13e2c37, 0x695dc6c8)},
+          {TOBN(0x2ab756f0, 0x4a057a87), TOBN(0xa8765500, 0xa6b48f98),
+           TOBN(0x4252face, 0x68651c44), TOBN(0xa52b540b, 0xe1765e02)}},
+         {{TOBN(0x4f922fc5, 0x16a0d2bb), TOBN(0x0d5cc16c, 0x1a623499),
+           TOBN(0x9241cf3a, 0x57c62c8b), TOBN(0x2f5e6961, 0xfd1b667f)},
+          {TOBN(0x5c15c70b, 0xf5a01797), TOBN(0x3d20b44d, 0x60956192),
+           TOBN(0x04911b37, 0x071fdb52), TOBN(0xf648f916, 0x8d6f0f7b)}},
+         {{TOBN(0x6dc1acaf, 0xe60b7cf7), TOBN(0x25860a50, 0x84a9d869),
+           TOBN(0x56fc6f09, 0xe7ba8ac4), TOBN(0x828c5bd0, 0x6148d29e)},
+          {TOBN(0xac6b435e, 0xdc55ae5f), TOBN(0xa527f56c, 0xc0117411),
+           TOBN(0x94d5045e, 0xfd24342c), TOBN(0x2c4c0a35, 0x70b67c0d)}},
+         {{TOBN(0x027cc8b8, 0xfac61d9a), TOBN(0x7d25e062, 0xe3c6fe8a),
+           TOBN(0xe08805bf, 0xe5bff503), TOBN(0x13271e6c, 0x6ff632f7)},
+          {TOBN(0x55dca6c0, 0x232f76a5), TOBN(0x8957c32d, 0x701ef426),
+           TOBN(0xee728bcb, 0xa10a5178), TOBN(0x5ea60411, 0xb62c5173)}},
+         {{TOBN(0xfc4e964e, 0xd0b8892b), TOBN(0x9ea17683, 0x9301bb74),
+           TOBN(0x6265c5ae, 0xfcc48626), TOBN(0xe60cf82e, 0xbb3e9102)},
+          {TOBN(0x57adf797, 0xd4df5531), TOBN(0x235b59a1, 0x8deeefe2),
+           TOBN(0x60adcf58, 0x3f306eb1), TOBN(0x105c2753, 0x3d09492d)}},
+         {{TOBN(0x4090914b, 0xb5def996), TOBN(0x1cb69c83, 0x233dd1e7),
+           TOBN(0xc1e9c1d3, 0x9b3d5e76), TOBN(0x1f3338ed, 0xfccf6012)},
+          {TOBN(0xb1e95d0d, 0x2f5378a8), TOBN(0xacf4c2c7, 0x2f00cd21),
+           TOBN(0x6e984240, 0xeb5fe290), TOBN(0xd66c038d, 0x248088ae)}},
+         {{TOBN(0x804d264a, 0xf94d70cf), TOBN(0xbdb802ef, 0x7314bf7e),
+           TOBN(0x8fb54de2, 0x4333ed02), TOBN(0x740461e0, 0x285635d9)},
+          {TOBN(0x4113b2c8, 0x365e9383), TOBN(0xea762c83, 0x3fdef652),
+           TOBN(0x4eec6e2e, 0x47b956c1), TOBN(0xa3d814be, 0x65620fa4)}},
+         {{TOBN(0x9ad5462b, 0xb4d8bc50), TOBN(0x181c0b16, 0xa9195770),
+           TOBN(0xebd4fe1c, 0x78412a68), TOBN(0xae0341bc, 0xc0dff48c)},
+          {TOBN(0xb6bc45cf, 0x7003e866), TOBN(0xf11a6dea, 0x8a24a41b),
+           TOBN(0x5407151a, 0xd04c24c2), TOBN(0x62c9d27d, 0xda5b7b68)}},
+         {{TOBN(0x2e964235, 0x88cceff6), TOBN(0x8594c54f, 0x8b07ed69),
+           TOBN(0x1578e73c, 0xc84d0d0d), TOBN(0x7b4e1055, 0xff532868)},
+          {TOBN(0xa348c0d5, 0xb5ec995a), TOBN(0xbf4b9d55, 0x14289a54),
+           TOBN(0x9ba155a6, 0x58fbd777), TOBN(0x186ed7a8, 0x1a84491d)}},
+         {{TOBN(0xd4992b30, 0x614c0900), TOBN(0xda98d121, 0xbd00c24b),
+           TOBN(0x7f534dc8, 0x7ec4bfa1), TOBN(0x4a5ff674, 0x37dc34bc)},
+          {TOBN(0x68c196b8, 0x1d7ea1d7), TOBN(0x38cf2893, 0x80a6d208),
+           TOBN(0xfd56cd09, 0xe3cbbd6e), TOBN(0xec72e27e, 0x4205a5b6)}},
+         {{TOBN(0x15ea68f5, 0xa44f77f7), TOBN(0x7aa5f9fd, 0xb43c52bc),
+           TOBN(0x86ff676f, 0x94f0e609), TOBN(0xa4cde963, 0x2e2d432b)},
+          {TOBN(0x8cafa0c0, 0xeee470af), TOBN(0x84137d0e, 0x8a3f5ec8),
+           TOBN(0xebb40411, 0xfaa31231), TOBN(0xa239c13f, 0x6f7f7ccf)}},
+         {{TOBN(0x32865719, 0xa8afd30b), TOBN(0x86798328, 0x8a826dce),
+           TOBN(0xdf04e891, 0xc4a8fbe0), TOBN(0xbb6b6e1b, 0xebf56ad3)},
+          {TOBN(0x0a695b11, 0x471f1ff0), TOBN(0xd76c3389, 0xbe15baf0),
+           TOBN(0x018edb95, 0xbe96c43e), TOBN(0xf2beaaf4, 0x90794158)}},
+         {{TOBN(0x152db09e, 0xc3076a27), TOBN(0x5e82908e, 0xe416545d),
+           TOBN(0xa2c41272, 0x356d6f2e), TOBN(0xdc9c9642, 0x31fd74e1)},
+          {TOBN(0x66ceb88d, 0x519bf615), TOBN(0xe29ecd76, 0x05a2274e),
+           TOBN(0x3a0473c4, 0xbf5e2fa0), TOBN(0x6b6eb671, 0x64284e67)}},
+         {{TOBN(0xe8b97932, 0xb88756dd), TOBN(0xed4e8652, 0xf17e3e61),
+           TOBN(0xc2dd1499, 0x3ee1c4a4), TOBN(0xc0aaee17, 0x597f8c0e)},
+          {TOBN(0x15c4edb9, 0x6c168af3), TOBN(0x6563c7bf, 0xb39ae875),
+           TOBN(0xadfadb6f, 0x20adb436), TOBN(0xad55e8c9, 0x9a042ac0)}},
+         {{TOBN(0x975a1ed8, 0xb76da1f5), TOBN(0x10dfa466, 0xa58acb94),
+           TOBN(0x8dd7f7e3, 0xac060282), TOBN(0x6813e66a, 0x572a051e)},
+          {TOBN(0xb4ccae1e, 0x350cb901), TOBN(0xb653d656, 0x50cb7822),
+           TOBN(0x42484710, 0xdfab3b87), TOBN(0xcd7ee537, 0x9b670fd0)}},
+         {{TOBN(0x0a50b12e, 0x523b8bf6), TOBN(0x8009eb5b, 0x8f910c1b),
+           TOBN(0xf535af82, 0x4a167588), TOBN(0x0f835f9c, 0xfb2a2abd)},
+          {TOBN(0xf59b2931, 0x2afceb62), TOBN(0xc797df2a, 0x169d383f),
+           TOBN(0xeb3f5fb0, 0x66ac02b0), TOBN(0x029d4c6f, 0xdaa2d0ca)}},
+         {{TOBN(0xd4059bc1, 0xafab4bc5), TOBN(0x833f5c6f, 0x56783247),
+           TOBN(0xb5346630, 0x8d2d3605), TOBN(0x83387891, 0xd34d8433)},
+          {TOBN(0xd973b30f, 0xadd9419a), TOBN(0xbcca1099, 0xafe3fce8),
+           TOBN(0x08178315, 0x0809aac6), TOBN(0x01b7f21a, 0x540f0f11)}},
+         {{TOBN(0x65c29219, 0x909523c8), TOBN(0xa62f648f, 0xa3a1c741),
+           TOBN(0x88598d4f, 0x60c9e55a), TOBN(0xbce9141b, 0x0e4f347a)},
+          {TOBN(0x9af97d84, 0x35f9b988), TOBN(0x0210da62, 0x320475b6),
+           TOBN(0x3c076e22, 0x9191476c), TOBN(0x7520dbd9, 0x44fc7834)}},
+         {{TOBN(0x6a6b2cfe, 0xc1ab1bbd), TOBN(0xef8a65be, 0xdc650938),
+           TOBN(0x72855540, 0x805d7bc4), TOBN(0xda389396, 0xed11fdfd)},
+          {TOBN(0xa9d5bd36, 0x74660876), TOBN(0x11d67c54, 0xb45dff35),
+           TOBN(0x6af7d148, 0xa4f5da94), TOBN(0xbb8d4c3f, 0xc0bbeb31)}},
+         {{TOBN(0x87a7ebd1, 0xe0a1b12a), TOBN(0x1e4ef88d, 0x770ba95f),
+           TOBN(0x8c33345c, 0xdc2ae9cb), TOBN(0xcecf1276, 0x01cc8403)},
+          {TOBN(0x687c012e, 0x1b39b80f), TOBN(0xfd90d0ad, 0x35c33ba4),
+           TOBN(0xa3ef5a67, 0x5c9661c2), TOBN(0x368fc88e, 0xe017429e)}},
+         {{TOBN(0xd30c6761, 0x196a2fa2), TOBN(0x931b9817, 0xbd5b312e),
+           TOBN(0xba01000c, 0x72f54a31), TOBN(0xa203d2c8, 0x66eaa541)},
+          {TOBN(0xf2abdee0, 0x98939db3), TOBN(0xe37d6c2c, 0x3e606c02),
+           TOBN(0xf2921574, 0x521ff643), TOBN(0x2781b3c4, 0xd7e2fca3)}},
+         {{TOBN(0x664300b0, 0x7850ec06), TOBN(0xac5a38b9, 0x7d3a10cf),
+           TOBN(0x9233188d, 0xe34ab39d), TOBN(0xe77057e4, 0x5072cbb9)},
+          {TOBN(0xbcf0c042, 0xb59e78df), TOBN(0x4cfc91e8, 0x1d97de52),
+           TOBN(0x4661a26c, 0x3ee0ca4a), TOBN(0x5620a4c1, 0xfb8507bc)}},
+         {{TOBN(0x4b44d4aa, 0x049f842c), TOBN(0xceabc5d5, 0x1540e82b),
+           TOBN(0x306710fd, 0x15c6f156), TOBN(0xbe5ae52b, 0x63db1d72)},
+          {TOBN(0x06f1e7e6, 0x334957f1), TOBN(0x57e388f0, 0x31144a70),
+           TOBN(0xfb69bb2f, 0xdf96447b), TOBN(0x0f78ebd3, 0x73e38a12)}},
+         {{TOBN(0xb8222605, 0x2b7ce542), TOBN(0xe6d4ce99, 0x7472bde1),
+           TOBN(0x53e16ebe, 0x09d2f4da), TOBN(0x180ff42e, 0x53b92b2e)},
+          {TOBN(0xc59bcc02, 0x2c34a1c6), TOBN(0x3803d6f9, 0x422c46c2),
+           TOBN(0x18aff74f, 0x5c14a8a2), TOBN(0x55aebf80, 0x10a08b28)}},
+         {{TOBN(0x66097d58, 0x7135593f), TOBN(0x32e6eff7, 0x2be570cd),
+           TOBN(0x584e6a10, 0x2a8c860d), TOBN(0xcd185890, 0xa2eb4163)},
+          {TOBN(0x7ceae99d, 0x6d97e134), TOBN(0xd42c6b70, 0xdd8447ce),
+           TOBN(0x59ddbb4a, 0xb8c50273), TOBN(0x03c612df, 0x3cf34e1e)}},
+         {{TOBN(0x84b9ca15, 0x04b6c5a0), TOBN(0x35216f39, 0x18f0e3a3),
+           TOBN(0x3ec2d2bc, 0xbd986c00), TOBN(0x8bf546d9, 0xd19228fe)},
+          {TOBN(0xd1c655a4, 0x4cd623c3), TOBN(0x366ce718, 0x502b8e5a),
+           TOBN(0x2cfc84b4, 0xeea0bfe7), TOBN(0xe01d5cee, 0xcf443e8e)}},
+         {{TOBN(0x8ec045d9, 0x036520f8), TOBN(0xdfb3c3d1, 0x92d40e98),
+           TOBN(0x0bac4cce, 0xcc559a04), TOBN(0x35eccae5, 0x240ea6b1)},
+          {TOBN(0x180b32db, 0xf8a5a0ac), TOBN(0x547972a5, 0xeb699700),
+           TOBN(0xa3765801, 0xca26bca0), TOBN(0x57e09d0e, 0xa647f25a)}},
+         {{TOBN(0xb956970e, 0x2fdd23cc), TOBN(0xb80288bc, 0x5682e971),
+           TOBN(0xe6e6d91e, 0x9ae86ebc), TOBN(0x0564c83f, 0x8c9f1939)},
+          {TOBN(0x551932a2, 0x39560368), TOBN(0xe893752b, 0x049c28e2),
+           TOBN(0x0b03cee5, 0xa6a158c3), TOBN(0xe12d656b, 0x04964263)}},
+         {{TOBN(0x4b47554e, 0x63e3bc1d), TOBN(0xc719b6a2, 0x45044ff7),
+           TOBN(0x4f24d30a, 0xe48daa07), TOBN(0xa3f37556, 0xc8c1edc3)},
+          {TOBN(0x9a47bf76, 0x0700d360), TOBN(0xbb1a1824, 0x822ae4e2),
+           TOBN(0x22e275a3, 0x89f1fb4c), TOBN(0x72b1aa23, 0x9968c5f5)}},
+         {{TOBN(0xa75feaca, 0xbe063f64), TOBN(0x9b392f43, 0xbce47a09),
+           TOBN(0xd4241509, 0x1ad07aca), TOBN(0x4b0c591b, 0x8d26cd0f)},
+          {TOBN(0x2d42ddfd, 0x92f1169a), TOBN(0x63aeb1ac, 0x4cbf2392),
+           TOBN(0x1de9e877, 0x0691a2af), TOBN(0xebe79af7, 0xd98021da)}},
+         {{TOBN(0xcfdf2a4e, 0x40e50acf), TOBN(0xf0a98ad7, 0xaf01d665),
+           TOBN(0xefb640bf, 0x1831be1f), TOBN(0x6fe8bd2f, 0x80e9ada0)},
+          {TOBN(0x94c103a1, 0x6cafbc91), TOBN(0x170f8759, 0x8308e08c),
+           TOBN(0x5de2d2ab, 0x9780ff4f), TOBN(0x666466bc, 0x45b201f2)}},
+         {{TOBN(0x58af2010, 0xf5b343bc), TOBN(0x0f2e400a, 0xf2f142fe),
+           TOBN(0x3483bfde, 0xa85f4bdf), TOBN(0xf0b1d093, 0x03bfeaa9)},
+          {TOBN(0x2ea01b95, 0xc7081603), TOBN(0xe943e4c9, 0x3dba1097),
+           TOBN(0x47be92ad, 0xb438f3a6), TOBN(0x00bb7742, 0xe5bf6636)}},
+         {{TOBN(0x136b7083, 0x824297b4), TOBN(0x9d0e5580, 0x5584455f),
+           TOBN(0xab48cedc, 0xf1c7d69e), TOBN(0x53a9e481, 0x2a256e76)},
+          {TOBN(0x0402b0e0, 0x65eb2413), TOBN(0xdadbbb84, 0x8fc407a7),
+           TOBN(0xa65cd5a4, 0x8d7f5492), TOBN(0x21d44293, 0x74bae294)}},
+         {{TOBN(0x66917ce6, 0x3b5f1cc4), TOBN(0x37ae52ea, 0xce872e62),
+           TOBN(0xbb087b72, 0x2905f244), TOBN(0x12077086, 0x1e6af74f)},
+          {TOBN(0x4b644e49, 0x1058edea), TOBN(0x827510e3, 0xb638ca1d),
+           TOBN(0x8cf2b704, 0x6038591c), TOBN(0xffc8b47a, 0xfe635063)}},
+         {{TOBN(0x3ae220e6, 0x1b4d5e63), TOBN(0xbd864742, 0x9d961b4b),
+           TOBN(0x610c107e, 0x9bd16bed), TOBN(0x4270352a, 0x1127147b)},
+          {TOBN(0x7d17ffe6, 0x64cfc50e), TOBN(0x50dee01a, 0x1e36cb42),
+           TOBN(0x068a7622, 0x35dc5f9a), TOBN(0x9a08d536, 0xdf53f62c)}},
+         {{TOBN(0x4ed71457, 0x6be5f7de), TOBN(0xd93006f8, 0xc2263c9e),
+           TOBN(0xe073694c, 0xcacacb36), TOBN(0x2ff7a5b4, 0x3ae118ab)},
+          {TOBN(0x3cce53f1, 0xcd871236), TOBN(0xf156a39d, 0xc2aa6d52),
+           TOBN(0x9cc5f271, 0xb198d76d), TOBN(0xbc615b6f, 0x81383d39)}},
+         {{TOBN(0xa54538e8, 0xde3eee6b), TOBN(0x58c77538, 0xab910d91),
+           TOBN(0x31e5bdbc, 0x58d278bd), TOBN(0x3cde4adf, 0xb963acae)},
+          {TOBN(0xb1881fd2, 0x5302169c), TOBN(0x8ca60fa0, 0xa989ed8b),
+           TOBN(0xa1999458, 0xff96a0ee), TOBN(0xc1141f03, 0xac6c283d)}},
+         {{TOBN(0x7677408d, 0x6dfafed3), TOBN(0x33a01653, 0x39661588),
+           TOBN(0x3c9c15ec, 0x0b726fa0), TOBN(0x090cfd93, 0x6c9b56da)},
+          {TOBN(0xe34f4bae, 0xa3c40af5), TOBN(0x3469eadb, 0xd21129f1),
+           TOBN(0xcc51674a, 0x1e207ce8), TOBN(0x1e293b24, 0xc83b1ef9)}},
+         {{TOBN(0x17173d13, 0x1e6c0bb4), TOBN(0x19004695, 0x90776d35),
+           TOBN(0xe7980e34, 0x6de6f922), TOBN(0x873554cb, 0xf4dd9a22)},
+          {TOBN(0x0316c627, 0xcbf18a51), TOBN(0x4d93651b, 0x3032c081),
+           TOBN(0x207f2771, 0x3946834d), TOBN(0x2c08d7b4, 0x30cdbf80)}},
+         {{TOBN(0x137a4fb4, 0x86df2a61), TOBN(0xa1ed9c07, 0xecf7b4a2),
+           TOBN(0xb2e460e2, 0x7bd042ff), TOBN(0xb7f5e2fa, 0x5f62f5ec)},
+          {TOBN(0x7aa6ec6b, 0xcc2423b7), TOBN(0x75ce0a7f, 0xba63eea7),
+           TOBN(0x67a45fb1, 0xf250a6e1), TOBN(0x93bc919c, 0xe53cdc9f)}},
+         {{TOBN(0x9271f56f, 0x871942df), TOBN(0x2372ff6f, 0x7859ad66),
+           TOBN(0x5f4c2b96, 0x33cb1a78), TOBN(0xe3e29101, 0x5838aa83)},
+          {TOBN(0xa7ed1611, 0xe4e8110c), TOBN(0x2a2d70d5, 0x330198ce),
+           TOBN(0xbdf132e8, 0x6720efe0), TOBN(0xe61a8962, 0x66a471bf)}},
+         {{TOBN(0x796d3a85, 0x825808bd), TOBN(0x51dc3cb7, 0x3fd6e902),
+           TOBN(0x643c768a, 0x916219d1), TOBN(0x36cd7685, 0xa2ad7d32)},
+          {TOBN(0xe3db9d05, 0xb22922a4), TOBN(0x6494c87e, 0xdba29660),
+           TOBN(0xf0ac91df, 0xbcd2ebc7), TOBN(0x4deb57a0, 0x45107f8d)}},
+         {{TOBN(0x42271f59, 0xc3d12a73), TOBN(0x5f71687c, 0xa5c2c51d),
+           TOBN(0xcb1f50c6, 0x05797bcb), TOBN(0x29ed0ed9, 0xd6d34eb0)},
+          {TOBN(0xe5fe5b47, 0x4683c2eb), TOBN(0x4956eeb5, 0x97447c46),
+           TOBN(0x5b163a43, 0x71207167), TOBN(0x93fa2fed, 0x0248c5ef)}},
+         {{TOBN(0x67930af2, 0x31f63950), TOBN(0xa77797c1, 0x14caa2c9),
+           TOBN(0x526e80ee, 0x27ac7e62), TOBN(0xe1e6e626, 0x58b28aec)},
+          {TOBN(0x636178b0, 0xb3c9fef0), TOBN(0xaf7752e0, 0x6d5f90be),
+           TOBN(0x94ecaf18, 0xeece51cf), TOBN(0x2864d0ed, 0xca806e1f)}},
+         {{TOBN(0x6de2e383, 0x97c69134), TOBN(0x5a42c316, 0xeb291293),
+           TOBN(0xc7779219, 0x6a60bae0), TOBN(0xa24de346, 0x6b7599d1)},
+          {TOBN(0x49d374aa, 0xb75d4941), TOBN(0x98900586, 0x2d501ff0),
+           TOBN(0x9f16d40e, 0xeb7974cf), TOBN(0x1033860b, 0xcdd8c115)}},
+         {{TOBN(0xb6c69ac8, 0x2094cec3), TOBN(0x9976fb88, 0x403b770c),
+           TOBN(0x1dea026c, 0x4859590d), TOBN(0xb6acbb46, 0x8562d1fd)},
+          {TOBN(0x7cd6c461, 0x44569d85), TOBN(0xc3190a36, 0x97f0891d),
+           TOBN(0xc6f53195, 0x48d5a17d), TOBN(0x7d919966, 0xd749abc8)}},
+         {{TOBN(0x65104837, 0xdd1c8a20), TOBN(0x7e5410c8, 0x2f683419),
+           TOBN(0x958c3ca8, 0xbe94022e), TOBN(0x605c3197, 0x6145dac2)},
+          {TOBN(0x3fc07501, 0x01683d54), TOBN(0x1d7127c5, 0x595b1234),
+           TOBN(0x10b8f87c, 0x9481277f), TOBN(0x677db2a8, 0xe65a1adb)}},
+         {{TOBN(0xec2fccaa, 0xddce3345), TOBN(0x2a6811b7, 0x012a4350),
+           TOBN(0x96760ff1, 0xac598bdc), TOBN(0x054d652a, 0xd1bf4128)},
+          {TOBN(0x0a1151d4, 0x92a21005), TOBN(0xad7f3971, 0x33110fdf),
+           TOBN(0x8c95928c, 0x1960100f), TOBN(0x6c91c825, 0x7bf03362)}},
+         {{TOBN(0xc8c8b2a2, 0xce309f06), TOBN(0xfdb27b59, 0xca27204b),
+           TOBN(0xd223eaa5, 0x0848e32e), TOBN(0xb93e4b2e, 0xe7bfaf1e)},
+          {TOBN(0xc5308ae6, 0x44aa3ded), TOBN(0x317a666a, 0xc015d573),
+           TOBN(0xc888ce23, 0x1a979707), TOBN(0xf141c1e6, 0x0d5c4958)}},
+         {{TOBN(0xb53b7de5, 0x61906373), TOBN(0x858dbade, 0xeb999595),
+           TOBN(0x8cbb47b2, 0xa59e5c36), TOBN(0x660318b3, 0xdcf4e842)},
+          {TOBN(0xbd161ccd, 0x12ba4b7a), TOBN(0xf399daab, 0xf8c8282a),
+           TOBN(0x1587633a, 0xeeb2130d), TOBN(0xa465311a, 0xda38dd7d)}},
+         {{TOBN(0x5f75eec8, 0x64d3779b), TOBN(0x3c5d0476, 0xad64c171),
+           TOBN(0x87410371, 0x2a914428), TOBN(0x8096a891, 0x90e2fc29)},
+          {TOBN(0xd3d2ae9d, 0x23b3ebc2), TOBN(0x90bdd6db, 0xa580cfd6),
+           TOBN(0x52dbb7f3, 0xc5b01f6c), TOBN(0xe68eded4, 0xe102a2dc)}},
+         {{TOBN(0x17785b77, 0x99eb6df0), TOBN(0x26c3cc51, 0x7386b779),
+           TOBN(0x345ed988, 0x6417a48e), TOBN(0xe990b4e4, 0x07d6ef31)},
+          {TOBN(0x0f456b7e, 0x2586abba), TOBN(0x239ca6a5, 0x59c96e9a),
+           TOBN(0xe327459c, 0xe2eb4206), TOBN(0x3a4c3313, 0xa002b90a)}},
+         {{TOBN(0x2a114806, 0xf6a3f6fb), TOBN(0xad5cad2f, 0x85c251dd),
+           TOBN(0x92c1f613, 0xf5a784d3), TOBN(0xec7bfacf, 0x349766d5)},
+          {TOBN(0x04b3cd33, 0x3e23cb3b), TOBN(0x3979fe84, 0xc5a64b2d),
+           TOBN(0x192e2720, 0x7e589106), TOBN(0xa60c43d1, 0xa15b527f)}},
+         {{TOBN(0x2dae9082, 0xbe7cf3a6), TOBN(0xcc86ba92, 0xbc967274),
+           TOBN(0xf28a2ce8, 0xaea0a8a9), TOBN(0x404ca6d9, 0x6ee988b3)},
+          {TOBN(0xfd7e9c5d, 0x005921b8), TOBN(0xf56297f1, 0x44e79bf9),
+           TOBN(0xa163b460, 0x0d75ddc2), TOBN(0x30b23616, 0xa1f2be87)}},
+         {{TOBN(0x4b070d21, 0xbfe50e2b), TOBN(0x7ef8cfd0, 0xe1bfede1),
+           TOBN(0xadba0011, 0x2aac4ae0), TOBN(0x2a3e7d01, 0xb9ebd033)},
+          {TOBN(0x995277ec, 0xe38d9d1c), TOBN(0xb500249e, 0x9c5d2de3),
+           TOBN(0x8912b820, 0xf13ca8c9), TOBN(0xc8798114, 0x877793af)}},
+         {{TOBN(0x19e6125d, 0xec3f1dec), TOBN(0x07b1f040, 0x911178da),
+           TOBN(0xd93ededa, 0x904a6738), TOBN(0x55187a5a, 0x0bebedcd)},
+          {TOBN(0xf7d04722, 0xeb329d41), TOBN(0xf449099e, 0xf170b391),
+           TOBN(0xfd317a69, 0xca99f828), TOBN(0x50c3db2b, 0x34a4976d)}},
+         {{TOBN(0xe9ba7784, 0x3757b392), TOBN(0x326caefd, 0xaa3ca05a),
+           TOBN(0x78e5293b, 0xf1e593d4), TOBN(0x7842a937, 0x0d98fd13)},
+          {TOBN(0xe694bf96, 0x5f96b10d), TOBN(0x373a9df6, 0x06a8cd05),
+           TOBN(0x997d1e51, 0xe8f0c7fc), TOBN(0x1d019790, 0x63fd972e)}},
+         {{TOBN(0x0064d858, 0x5499fb32), TOBN(0x7b67bad9, 0x77a8aeb7),
+           TOBN(0x1d3eb977, 0x2d08eec5), TOBN(0x5fc047a6, 0xcbabae1d)},
+          {TOBN(0x0577d159, 0xe54a64bb), TOBN(0x8862201b, 0xc43497e4),
+           TOBN(0xad6b4e28, 0x2ce0608d), TOBN(0x8b687b7d, 0x0b167aac)}},
+         {{TOBN(0x6ed4d367, 0x8b2ecfa9), TOBN(0x24dfe62d, 0xa90c3c38),
+           TOBN(0xa1862e10, 0x3fe5c42b), TOBN(0x1ca73dca, 0xd5732a9f)},
+          {TOBN(0x35f038b7, 0x76bb87ad), TOBN(0x674976ab, 0xf242b81f),
+           TOBN(0x4f2bde7e, 0xb0fd90cd), TOBN(0x6efc172e, 0xa7fdf092)}},
+         {{TOBN(0x3806b69b, 0x92222f1f), TOBN(0x5a2459ca, 0x6cf7ae70),
+           TOBN(0x6789f69c, 0xa85217ee), TOBN(0x5f232b5e, 0xe3dc85ac)},
+          {TOBN(0x660e3ec5, 0x48e9e516), TOBN(0x124b4e47, 0x3197eb31),
+           TOBN(0x10a0cb13, 0xaafcca23), TOBN(0x7bd63ba4, 0x8213224f)}},
+         {{TOBN(0xaffad7cc, 0x290a7f4f), TOBN(0x6b409c9e, 0x0286b461),
+           TOBN(0x58ab809f, 0xffa407af), TOBN(0xc3122eed, 0xc68ac073)},
+          {TOBN(0x17bf9e50, 0x4ef24d7e), TOBN(0x5d929794, 0x3e2a5811),
+           TOBN(0x519bc867, 0x02902e01), TOBN(0x76bba5da, 0x39c8a851)}},
+         {{TOBN(0xe9f9669c, 0xda94951e), TOBN(0x4b6af58d, 0x66b8d418),
+           TOBN(0xfa321074, 0x17d426a4), TOBN(0xc78e66a9, 0x9dde6027)},
+          {TOBN(0x0516c083, 0x4a53b964), TOBN(0xfc659d38, 0xff602330),
+           TOBN(0x0ab55e5c, 0x58c5c897), TOBN(0x985099b2, 0x838bc5df)}},
+         {{TOBN(0x061d9efc, 0xc52fc238), TOBN(0x712b2728, 0x6ac1da3f),
+           TOBN(0xfb658149, 0x9283fe08), TOBN(0x4954ac94, 0xb8aaa2f7)},
+          {TOBN(0x85c0ada4, 0x7fb2e74f), TOBN(0xee8ba98e, 0xb89926b0),
+           TOBN(0xe4f9d37d, 0x23d1af5b), TOBN(0x14ccdbf9, 0xba9b015e)}},
+         {{TOBN(0xb674481b, 0x7bfe7178), TOBN(0x4e1debae, 0x65405868),
+           TOBN(0x061b2821, 0xc48c867d), TOBN(0x69c15b35, 0x513b30ea)},
+          {TOBN(0x3b4a1666, 0x36871088), TOBN(0xe5e29f5d, 0x1220b1ff),
+           TOBN(0x4b82bb35, 0x233d9f4d), TOBN(0x4e076333, 0x18cdc675)}}},
+        {{{TOBN(0x0d53f5c7, 0xa3e6fced), TOBN(0xe8cbbdd5, 0xf45fbdeb),
+           TOBN(0xf85c01df, 0x13339a70), TOBN(0x0ff71880, 0x142ceb81)},
+          {TOBN(0x4c4e8774, 0xbd70437a), TOBN(0x5fb32891, 0xba0bda6a),
+           TOBN(0x1cdbebd2, 0xf18bd26e), TOBN(0x2f9526f1, 0x03a9d522)}},
+         {{TOBN(0x40ce3051, 0x92c4d684), TOBN(0x8b04d725, 0x7612efcd),
+           TOBN(0xb9dcda36, 0x6f9cae20), TOBN(0x0edc4d24, 0xf058856c)},
+          {TOBN(0x64f2e6bf, 0x85427900), TOBN(0x3de81295, 0xdc09dfea),
+           TOBN(0xd41b4487, 0x379bf26c), TOBN(0x50b62c6d, 0x6df135a9)}},
+         {{TOBN(0xd4f8e3b4, 0xc72dfe67), TOBN(0xc416b0f6, 0x90e19fdf),
+           TOBN(0x18b9098d, 0x4c13bd35), TOBN(0xac11118a, 0x15b8cb9e)},
+          {TOBN(0xf598a318, 0xf0062841), TOBN(0xbfe0602f, 0x89f356f4),
+           TOBN(0x7ae3637e, 0x30177a0c), TOBN(0x34097747, 0x61136537)}},
+         {{TOBN(0x0db2fb5e, 0xd005832a), TOBN(0x5f5efd3b, 0x91042e4f),
+           TOBN(0x8c4ffdc6, 0xed70f8ca), TOBN(0xe4645d0b, 0xb52da9cc)},
+          {TOBN(0x9596f58b, 0xc9001d1f), TOBN(0x52c8f0bc, 0x4e117205),
+           TOBN(0xfd4aa0d2, 0xe398a084), TOBN(0x815bfe3a, 0x104f49de)}},
+         {{TOBN(0x97e5443f, 0x23885e5f), TOBN(0xf72f8f99, 0xe8433aab),
+           TOBN(0xbd00b154, 0xe4d4e604), TOBN(0xd0b35e6a, 0xe5e173ff)},
+          {TOBN(0x57b2a048, 0x9164722d), TOBN(0x3e3c665b, 0x88761ec8),
+           TOBN(0x6bdd1397, 0x3da83832), TOBN(0x3c8b1a1e, 0x73dafe3b)}},
+         {{TOBN(0x4497ace6, 0x54317cac), TOBN(0xbe600ab9, 0x521771b3),
+           TOBN(0xb42e409e, 0xb0dfe8b8), TOBN(0x386a67d7, 0x3942310f)},
+          {TOBN(0x25548d8d, 0x4431cc28), TOBN(0xa7cff142, 0x985dc524),
+           TOBN(0x4d60f5a1, 0x93c4be32), TOBN(0x83ebd5c8, 0xd071c6e1)}},
+         {{TOBN(0xba3a80a7, 0xb1fd2b0b), TOBN(0x9b3ad396, 0x5bec33e8),
+           TOBN(0xb3868d61, 0x79743fb3), TOBN(0xcfd169fc, 0xfdb462fa)},
+          {TOBN(0xd3b499d7, 0x9ce0a6af), TOBN(0x55dc1cf1, 0xe42d3ff8),
+           TOBN(0x04fb9e6c, 0xc6c3e1b2), TOBN(0x47e6961d, 0x6f69a474)}},
+         {{TOBN(0x54eb3acc, 0xe548b37b), TOBN(0xb38e7542, 0x84d40549),
+           TOBN(0x8c3daa51, 0x7b341b4f), TOBN(0x2f6928ec, 0x690bf7fa)},
+          {TOBN(0x0496b323, 0x86ce6c41), TOBN(0x01be1c55, 0x10adadcd),
+           TOBN(0xc04e67e7, 0x4bb5faf9), TOBN(0x3cbaf678, 0xe15c9985)}},
+         {{TOBN(0x8cd12145, 0x50ca4247), TOBN(0xba1aa47a, 0xe7dd30aa),
+           TOBN(0x2f81ddf1, 0xe58fee24), TOBN(0x03452936, 0xeec9b0e8)},
+          {TOBN(0x8bdc3b81, 0x243aea96), TOBN(0x9a2919af, 0x15c3d0e5),
+           TOBN(0x9ea640ec, 0x10948361), TOBN(0x5ac86d5b, 0x6e0bcccf)}},
+         {{TOBN(0xf892d918, 0xc36cf440), TOBN(0xaed3e837, 0xc939719c),
+           TOBN(0xb07b08d2, 0xc0218b64), TOBN(0x6f1bcbba, 0xce9790dd)},
+          {TOBN(0x4a84d6ed, 0x60919b8e), TOBN(0xd8900791, 0x8ac1f9eb),
+           TOBN(0xf84941aa, 0x0dd5daef), TOBN(0xb22fe40a, 0x67fd62c5)}},
+         {{TOBN(0x97e15ba2, 0x157f2db3), TOBN(0xbda2fc8f, 0x8e28ca9c),
+           TOBN(0x5d050da4, 0x37b9f454), TOBN(0x3d57eb57, 0x2379d72e)},
+          {TOBN(0xe9b5eba2, 0xfb5ee997), TOBN(0x01648ca2, 0xe11538ca),
+           TOBN(0x32bb76f6, 0xf6327974), TOBN(0x338f14b8, 0xff3f4bb7)}},
+         {{TOBN(0x524d226a, 0xd7ab9a2d), TOBN(0x9c00090d, 0x7dfae958),
+           TOBN(0x0ba5f539, 0x8751d8c2), TOBN(0x8afcbcdd, 0x3ab8262d)},
+          {TOBN(0x57392729, 0xe99d043b), TOBN(0xef51263b, 0xaebc943a),
+           TOBN(0x9feace93, 0x20862935), TOBN(0x639efc03, 0xb06c817b)}},
+         {{TOBN(0x1fe054b3, 0x66b4be7a), TOBN(0x3f25a9de, 0x84a37a1e),
+           TOBN(0xf39ef1ad, 0x78d75cd9), TOBN(0xd7b58f49, 0x5062c1b5)},
+          {TOBN(0x6f74f9a9, 0xff563436), TOBN(0xf718ff29, 0xe8af51e7),
+           TOBN(0x5234d313, 0x15e97fec), TOBN(0xb6a8e2b1, 0x292f1c0a)}},
+         {{TOBN(0xa7f53aa8, 0x327720c1), TOBN(0x956ca322, 0xba092cc8),
+           TOBN(0x8f03d64a, 0x28746c4d), TOBN(0x51fe1782, 0x66d0d392)},
+          {TOBN(0xd19b34db, 0x3c832c80), TOBN(0x60dccc5c, 0x6da2e3b4),
+           TOBN(0x245dd62e, 0x0a104ccc), TOBN(0xa7ab1de1, 0x620b21fd)}},
+         {{TOBN(0xb293ae0b, 0x3893d123), TOBN(0xf7b75783, 0xb15ee71c),
+           TOBN(0x5aa3c614, 0x42a9468b), TOBN(0xd686123c, 0xdb15d744)},
+          {TOBN(0x8c616891, 0xa7ab4116), TOBN(0x6fcd72c8, 0xa4e6a459),
+           TOBN(0xac219110, 0x77e5fad7), TOBN(0xfb6a20e7, 0x704fa46b)}},
+         {{TOBN(0xe839be7d, 0x341d81dc), TOBN(0xcddb6889, 0x32148379),
+           TOBN(0xda6211a1, 0xf7026ead), TOBN(0xf3b2575f, 0xf4d1cc5e)},
+          {TOBN(0x40cfc8f6, 0xa7a73ae6), TOBN(0x83879a5e, 0x61d5b483),
+           TOBN(0xc5acb1ed, 0x41a50ebc), TOBN(0x59a60cc8, 0x3c07d8fa)}},
+         {{TOBN(0x1b73bdce, 0xb1876262), TOBN(0x2b0d79f0, 0x12af4ee9),
+           TOBN(0x8bcf3b0b, 0xd46e1d07), TOBN(0x17d6af9d, 0xe45d152f)},
+          {TOBN(0x73520461, 0x6d736451), TOBN(0x43cbbd97, 0x56b0bf5a),
+           TOBN(0xb0833a5b, 0xd5999b9d), TOBN(0x702614f0, 0xeb72e398)}},
+         {{TOBN(0x0aadf01a, 0x59c3e9f8), TOBN(0x40200e77, 0xce6b3d16),
+           TOBN(0xda22bdd3, 0xdeddafad), TOBN(0x76dedaf4, 0x310d72e1)},
+          {TOBN(0x49ef807c, 0x4bc2e88f), TOBN(0x6ba81291, 0x146dd5a5),
+           TOBN(0xa1a4077a, 0x7d8d59e9), TOBN(0x87b6a2e7, 0x802db349)}},
+         {{TOBN(0xd5679997, 0x1b4e598e), TOBN(0xf499ef1f, 0x06fe4b1d),
+           TOBN(0x3978d3ae, 0xfcb267c5), TOBN(0xb582b557, 0x235786d0)},
+          {TOBN(0x32b3b2ca, 0x1715cb07), TOBN(0x4c3de6a2, 0x8480241d),
+           TOBN(0x63b5ffed, 0xcb571ecd), TOBN(0xeaf53900, 0xed2fe9a9)}},
+         {{TOBN(0xdec98d4a, 0xc3b81990), TOBN(0x1cb83722, 0x9e0cc8fe),
+           TOBN(0xfe0b0491, 0xd2b427b9), TOBN(0x0f2386ac, 0xe983a66c)},
+          {TOBN(0x930c4d1e, 0xb3291213), TOBN(0xa2f82b2e, 0x59a62ae4),
+           TOBN(0x77233853, 0xf93e89e3), TOBN(0x7f8063ac, 0x11777c7f)}},
+         {{TOBN(0xff0eb567, 0x59ad2877), TOBN(0x6f454642, 0x9865c754),
+           TOBN(0xe6fe701a, 0x236e9a84), TOBN(0xc586ef16, 0x06e40fc3)},
+          {TOBN(0x3f62b6e0, 0x24bafad9), TOBN(0xc8b42bd2, 0x64da906a),
+           TOBN(0xc98e1eb4, 0xda3276a0), TOBN(0x30d0e5fc, 0x06cbf852)}},
+         {{TOBN(0x1b6b2ae1, 0xe8b4dfd4), TOBN(0xd754d5c7, 0x8301cbac),
+           TOBN(0x66097629, 0x112a39ac), TOBN(0xf86b5999, 0x93ba4ab9)},
+          {TOBN(0x26c9dea7, 0x99f9d581), TOBN(0x0473b1a8, 0xc2fafeaa),
+           TOBN(0x1469af55, 0x3b2505a5), TOBN(0x227d16d7, 0xd6a43323)}},
+         {{TOBN(0x3316f73c, 0xad3d97f9), TOBN(0x52bf3bb5, 0x1f137455),
+           TOBN(0x953eafeb, 0x09954e7c), TOBN(0xa721dfed, 0xdd732411)},
+          {TOBN(0xb4929821, 0x141d4579), TOBN(0x3411321c, 0xaa3bd435),
+           TOBN(0xafb355aa, 0x17fa6015), TOBN(0xb4e7ef4a, 0x18e42f0e)}},
+         {{TOBN(0x604ac97c, 0x59371000), TOBN(0xe1c48c70, 0x7f759c18),
+           TOBN(0x3f62ecc5, 0xa5db6b65), TOBN(0x0a78b173, 0x38a21495)},
+          {TOBN(0x6be1819d, 0xbcc8ad94), TOBN(0x70dc04f6, 0xd89c3400),
+           TOBN(0x462557b4, 0xa6b4840a), TOBN(0x544c6ade, 0x60bd21c0)}},
+         {{TOBN(0x6a00f24e, 0x907a544b), TOBN(0xa7520dcb, 0x313da210),
+           TOBN(0xfe939b75, 0x11e4994b), TOBN(0x918b6ba6, 0xbc275d70)},
+          {TOBN(0xd3e5e0fc, 0x644be892), TOBN(0x707a9816, 0xfdaf6c42),
+           TOBN(0x60145567, 0xf15c13fe), TOBN(0x4818ebaa, 0xe130a54a)}},
+         {{TOBN(0x28aad3ad, 0x58d2f767), TOBN(0xdc5267fd, 0xd7e7c773),
+           TOBN(0x4919cc88, 0xc3afcc98), TOBN(0xaa2e6ab0, 0x2db8cd4b)},
+          {TOBN(0xd46fec04, 0xd0c63eaa), TOBN(0xa1cb92c5, 0x19ffa832),
+           TOBN(0x678dd178, 0xe43a631f), TOBN(0xfb5ae1cd, 0x3dc788b3)}},
+         {{TOBN(0x68b4fb90, 0x6e77de04), TOBN(0x7992bcf0, 0xf06dbb97),
+           TOBN(0x896e6a13, 0xc417c01d), TOBN(0x8d96332c, 0xb956be01)},
+          {TOBN(0x902fc93a, 0x413aa2b9), TOBN(0x99a4d915, 0xfc98c8a5),
+           TOBN(0x52c29407, 0x565f1137), TOBN(0x4072690f, 0x21e4f281)}},
+         {{TOBN(0x36e607cf, 0x02ff6072), TOBN(0xa47d2ca9, 0x8ad98cdc),
+           TOBN(0xbf471d1e, 0xf5f56609), TOBN(0xbcf86623, 0xf264ada0)},
+          {TOBN(0xb70c0687, 0xaa9e5cb6), TOBN(0xc98124f2, 0x17401c6c),
+           TOBN(0x8189635f, 0xd4a61435), TOBN(0xd28fb8af, 0xa9d98ea6)}},
+         {{TOBN(0xb9a67c2a, 0x40c251f8), TOBN(0x88cd5d87, 0xa2da44be),
+           TOBN(0x437deb96, 0xe09b5423), TOBN(0x150467db, 0x64287dc1)},
+          {TOBN(0xe161debb, 0xcdabb839), TOBN(0xa79e9742, 0xf1839a3e),
+           TOBN(0xbb8dd3c2, 0x652d202b), TOBN(0x7b3e67f7, 0xe9f97d96)}},
+         {{TOBN(0x5aa5d78f, 0xb1cb6ac9), TOBN(0xffa13e8e, 0xca1d0d45),
+           TOBN(0x369295dd, 0x2ba5bf95), TOBN(0xd68bd1f8, 0x39aff05e)},
+          {TOBN(0xaf0d86f9, 0x26d783f2), TOBN(0x543a59b3, 0xfc3aafc1),
+           TOBN(0x3fcf81d2, 0x7b7da97c), TOBN(0xc990a056, 0xd25dee46)}},
+         {{TOBN(0x3e6775b8, 0x519cce2c), TOBN(0xfc9af71f, 0xae13d863),
+           TOBN(0x774a4a6f, 0x47c1605c), TOBN(0x46ba4245, 0x2fd205e8)},
+          {TOBN(0xa06feea4, 0xd3fd524d), TOBN(0x1e724641, 0x6de1acc2),
+           TOBN(0xf53816f1, 0x334e2b42), TOBN(0x49e5918e, 0x922f0024)}},
+         {{TOBN(0x439530b6, 0x65c7322d), TOBN(0xcf12cc01, 0xb3c1b3fb),
+           TOBN(0xc70b0186, 0x0172f685), TOBN(0xb915ee22, 0x1b58391d)},
+          {TOBN(0x9afdf03b, 0xa317db24), TOBN(0x87dec659, 0x17b8ffc4),
+           TOBN(0x7f46597b, 0xe4d3d050), TOBN(0x80a1c1ed, 0x006500e7)}},
+         {{TOBN(0x84902a96, 0x78bf030e), TOBN(0xfb5e9c9a, 0x50560148),
+           TOBN(0x6dae0a92, 0x63362426), TOBN(0xdcaeecf4, 0xa9e30c40)},
+          {TOBN(0xc0d887bb, 0x518d0c6b), TOBN(0x99181152, 0xcb985b9d),
+           TOBN(0xad186898, 0xef7bc381), TOBN(0x18168ffb, 0x9ee46201)}},
+         {{TOBN(0x9a04cdaa, 0x2502753c), TOBN(0xbb279e26, 0x51407c41),
+           TOBN(0xeacb03aa, 0xf23564e5), TOBN(0x18336582, 0x71e61016)},
+          {TOBN(0x8684b8c4, 0xeb809877), TOBN(0xb336e18d, 0xea0e672e),
+           TOBN(0xefb601f0, 0x34ee5867), TOBN(0x2733edbe, 0x1341cfd1)}},
+         {{TOBN(0xb15e809a, 0x26025c3c), TOBN(0xe6e981a6, 0x9350df88),
+           TOBN(0x92376237, 0x8502fd8e), TOBN(0x4791f216, 0x0c12be9b)},
+          {TOBN(0xb7256789, 0x25f02425), TOBN(0xec863194, 0x7a974443),
+           TOBN(0x7c0ce882, 0xfb41cc52), TOBN(0xc266ff7e, 0xf25c07f2)}},
+         {{TOBN(0x3d4da8c3, 0x017025f3), TOBN(0xefcf628c, 0xfb9579b4),
+           TOBN(0x5c4d0016, 0x1f3716ec), TOBN(0x9c27ebc4, 0x6801116e)},
+          {TOBN(0x5eba0ea1, 0x1da1767e), TOBN(0xfe151452, 0x47004c57),
+           TOBN(0x3ace6df6, 0x8c2373b7), TOBN(0x75c3dffe, 0x5dbc37ac)}},
+         {{TOBN(0x3dc32a73, 0xddc925fc), TOBN(0xb679c841, 0x2f65ee0b),
+           TOBN(0x715a3295, 0x451cbfeb), TOBN(0xd9889768, 0xf76e9a29)},
+          {TOBN(0xec20ce7f, 0xb28ad247), TOBN(0xe99146c4, 0x00894d79),
+           TOBN(0x71457d7c, 0x9f5e3ea7), TOBN(0x097b2662, 0x38030031)}},
+         {{TOBN(0xdb7f6ae6, 0xcf9f82a8), TOBN(0x319decb9, 0x438f473a),
+           TOBN(0xa63ab386, 0x283856c3), TOBN(0x13e3172f, 0xb06a361b)},
+          {TOBN(0x2959f8dc, 0x7d5a006c), TOBN(0x2dbc27c6, 0x75fba752),
+           TOBN(0xc1227ab2, 0x87c22c9e), TOBN(0x06f61f75, 0x71a268b2)}},
+         {{TOBN(0x1b6bb971, 0x04779ce2), TOBN(0xaca83812, 0x0aadcb1d),
+           TOBN(0x297ae0bc, 0xaeaab2d5), TOBN(0xa5c14ee7, 0x5bfb9f13)},
+          {TOBN(0xaa00c583, 0xf17a62c7), TOBN(0x39eb962c, 0x173759f6),
+           TOBN(0x1eeba1d4, 0x86c9a88f), TOBN(0x0ab6c37a, 0xdf016c5e)}},
+         {{TOBN(0xa2a147db, 0xa28a0749), TOBN(0x246c20d6, 0xee519165),
+           TOBN(0x5068d1b1, 0xd3810715), TOBN(0xb1e7018c, 0x748160b9)},
+          {TOBN(0x03f5b1fa, 0xf380ff62), TOBN(0xef7fb1dd, 0xf3cb2c1e),
+           TOBN(0xeab539a8, 0xfc91a7da), TOBN(0x83ddb707, 0xf3f9b561)}},
+         {{TOBN(0xc550e211, 0xfe7df7a4), TOBN(0xa7cd07f2, 0x063f6f40),
+           TOBN(0xb0de3635, 0x2976879c), TOBN(0xb5f83f85, 0xe55741da)},
+          {TOBN(0x4ea9d25e, 0xf3d8ac3d), TOBN(0x6fe2066f, 0x62819f02),
+           TOBN(0x4ab2b9c2, 0xcef4a564), TOBN(0x1e155d96, 0x5ffa2de3)}},
+         {{TOBN(0x0eb0a19b, 0xc3a72d00), TOBN(0x4037665b, 0x8513c31b),
+           TOBN(0x2fb2b6bf, 0x04c64637), TOBN(0x45c34d6e, 0x08cdc639)},
+          {TOBN(0x56f1e10f, 0xf01fd796), TOBN(0x4dfb8101, 0xfe3667b8),
+           TOBN(0xe0eda253, 0x9021d0c0), TOBN(0x7a94e9ff, 0x8a06c6ab)}},
+         {{TOBN(0x2d3bb0d9, 0xbb9aa882), TOBN(0xea20e4e5, 0xec05fd10),
+           TOBN(0xed7eeb5f, 0x1a1ca64e), TOBN(0x2fa6b43c, 0xc6327cbd)},
+          {TOBN(0xb577e3cf, 0x3aa91121), TOBN(0x8c6bd5ea, 0x3a34079b),
+           TOBN(0xd7e5ba39, 0x60e02fc0), TOBN(0xf16dd2c3, 0x90141bf8)}},
+         {{TOBN(0xb57276d9, 0x80101b98), TOBN(0x760883fd, 0xb82f0f66),
+           TOBN(0x89d7de75, 0x4bc3eff3), TOBN(0x03b60643, 0x5dc2ab40)},
+          {TOBN(0xcd6e53df, 0xe05beeac), TOBN(0xf2f1e862, 0xbc3325cd),
+           TOBN(0xdd0f7921, 0x774f03c3), TOBN(0x97ca7221, 0x4552cc1b)}},
+         {{TOBN(0x5a0d6afe, 0x1cd19f72), TOBN(0xa20915dc, 0xf183fbeb),
+           TOBN(0x9fda4b40, 0x832c403c), TOBN(0x32738edd, 0xbe425442)},
+          {TOBN(0x469a1df6, 0xb5eccf1a), TOBN(0x4b5aff42, 0x28bbe1f0),
+           TOBN(0x31359d7f, 0x570dfc93), TOBN(0xa18be235, 0xf0088628)}},
+         {{TOBN(0xa5b30fba, 0xb00ed3a9), TOBN(0x34c61374, 0x73cdf8be),
+           TOBN(0x2c5c5f46, 0xabc56797), TOBN(0x5cecf93d, 0xb82a8ae2)},
+          {TOBN(0x7d3dbe41, 0xa968fbf0), TOBN(0xd23d4583, 0x1a5c7f3d),
+           TOBN(0xf28f69a0, 0xc087a9c7), TOBN(0xc2d75471, 0x474471ca)}},
+         {{TOBN(0x36ec9f4a, 0x4eb732ec), TOBN(0x6c943bbd, 0xb1ca6bed),
+           TOBN(0xd64535e1, 0xf2457892), TOBN(0x8b84a8ea, 0xf7e2ac06)},
+          {TOBN(0xe0936cd3, 0x2499dd5f), TOBN(0x12053d7e, 0x0ed04e57),
+           TOBN(0x4bdd0076, 0xe4305d9d), TOBN(0x34a527b9, 0x1f67f0a2)}},
+         {{TOBN(0xe79a4af0, 0x9cec46ea), TOBN(0xb15347a1, 0x658b9bc7),
+           TOBN(0x6bd2796f, 0x35af2f75), TOBN(0xac957990, 0x4051c435)},
+          {TOBN(0x2669dda3, 0xc33a655d), TOBN(0x5d503c2e, 0x88514aa3),
+           TOBN(0xdfa11337, 0x3753dd41), TOBN(0x3f054673, 0x0b754f78)}},
+         {{TOBN(0xbf185677, 0x496125bd), TOBN(0xfb0023c8, 0x3775006c),
+           TOBN(0xfa0f072f, 0x3a037899), TOBN(0x4222b6eb, 0x0e4aea57)},
+          {TOBN(0x3dde5e76, 0x7866d25a), TOBN(0xb6eb04f8, 0x4837aa6f),
+           TOBN(0x5315591a, 0x2cf1cdb8), TOBN(0x6dfb4f41, 0x2d4e683c)}},
+         {{TOBN(0x7e923ea4, 0x48ee1f3a), TOBN(0x9604d9f7, 0x05a2afd5),
+           TOBN(0xbe1d4a33, 0x40ea4948), TOBN(0x5b45f1f4, 0xb44cbd2f)},
+          {TOBN(0x5faf8376, 0x4acc757e), TOBN(0xa7cf9ab8, 0x63d68ff7),
+           TOBN(0x8ad62f69, 0xdf0e404b), TOBN(0xd65f33c2, 0x12bdafdf)}},
+         {{TOBN(0xc365de15, 0xa377b14e), TOBN(0x6bf5463b, 0x8e39f60c),
+           TOBN(0x62030d2d, 0x2ce68148), TOBN(0xd95867ef, 0xe6f843a8)},
+          {TOBN(0xd39a0244, 0xef5ab017), TOBN(0x0bd2d8c1, 0x4ab55d12),
+           TOBN(0xc9503db3, 0x41639169), TOBN(0x2d4e25b0, 0xf7660c8a)}},
+         {{TOBN(0x760cb3b5, 0xe224c5d7), TOBN(0xfa3baf8c, 0x68616919),
+           TOBN(0x9fbca113, 0x8d142552), TOBN(0x1ab18bf1, 0x7669ebf5)},
+          {TOBN(0x55e6f53e, 0x9bdf25dd), TOBN(0x04cc0bf3, 0xcb6cd154),
+           TOBN(0x595bef49, 0x95e89080), TOBN(0xfe9459a8, 0x104a9ac1)}},
+         {{TOBN(0xad2d89ca, 0xcce9bb32), TOBN(0xddea65e1, 0xf7de8285),
+           TOBN(0x62ed8c35, 0xb351bd4b), TOBN(0x4150ff36, 0x0c0e19a7)},
+          {TOBN(0x86e3c801, 0x345f4e47), TOBN(0x3bf21f71, 0x203a266c),
+           TOBN(0x7ae110d4, 0x855b1f13), TOBN(0x5d6aaf6a, 0x07262517)}},
+         {{TOBN(0x1e0f12e1, 0x813d28f1), TOBN(0x6000e11d, 0x7ad7a523),
+           TOBN(0xc7d8deef, 0xc744a17b), TOBN(0x1e990b48, 0x14c05a00)},
+          {TOBN(0x68fddaee, 0x93e976d5), TOBN(0x696241d1, 0x46610d63),
+           TOBN(0xb204e7c3, 0x893dda88), TOBN(0x8bccfa65, 0x6a3a6946)}},
+         {{TOBN(0xb59425b4, 0xc5cd1411), TOBN(0x701b4042, 0xff3658b1),
+           TOBN(0xe3e56bca, 0x4784cf93), TOBN(0x27de5f15, 0x8fe68d60)},
+          {TOBN(0x4ab9cfce, 0xf8d53f19), TOBN(0xddb10311, 0xa40a730d),
+           TOBN(0x6fa73cd1, 0x4eee0a8a), TOBN(0xfd548748, 0x5249719d)}},
+         {{TOBN(0x49d66316, 0xa8123ef0), TOBN(0x73c32db4, 0xe7f95438),
+           TOBN(0x2e2ed209, 0x0d9e7854), TOBN(0xf98a9329, 0x9d9f0507)},
+          {TOBN(0xc5d33cf6, 0x0c6aa20a), TOBN(0x9a32ba14, 0x75279bb2),
+           TOBN(0x7e3202cb, 0x774a7307), TOBN(0x64ed4bc4, 0xe8c42dbd)}},
+         {{TOBN(0xc20f1a06, 0xd4caed0d), TOBN(0xb8021407, 0x171d22b3),
+           TOBN(0xd426ca04, 0xd13268d7), TOBN(0x92377007, 0x25f4d126)},
+          {TOBN(0x4204cbc3, 0x71f21a85), TOBN(0x18461b7a, 0xf82369ba),
+           TOBN(0xc0c07d31, 0x3fc858f9), TOBN(0x5deb5a50, 0xe2bab569)}},
+         {{TOBN(0xd5959d46, 0xd5eea89e), TOBN(0xfdff8424, 0x08437f4b),
+           TOBN(0xf21071e4, 0x3cfe254f), TOBN(0x72417696, 0x95468321)},
+          {TOBN(0x5d8288b9, 0x102cae3e), TOBN(0x2d143e3d, 0xf1965dff),
+           TOBN(0x00c9a376, 0xa078d847), TOBN(0x6fc0da31, 0x26028731)}},
+         {{TOBN(0xa2baeadf, 0xe45083a2), TOBN(0x66bc7218, 0x5e5b4bcd),
+           TOBN(0x2c826442, 0xd04b8e7f), TOBN(0xc19f5451, 0x6c4b586b)},
+          {TOBN(0x60182c49, 0x5b7eeed5), TOBN(0xd9954ecd, 0x7aa9dfa1),
+           TOBN(0xa403a8ec, 0xc73884ad), TOBN(0x7fb17de2, 0x9bb39041)}},
+         {{TOBN(0x694b64c5, 0xabb020e8), TOBN(0x3d18c184, 0x19c4eec7),
+           TOBN(0x9c4673ef, 0x1c4793e5), TOBN(0xc7b8aeb5, 0x056092e6)},
+          {TOBN(0x3aa1ca43, 0xf0f8c16b), TOBN(0x224ed5ec, 0xd679b2f6),
+           TOBN(0x0d56eeaf, 0x55a205c9), TOBN(0xbfe115ba, 0x4b8e028b)}},
+         {{TOBN(0x97e60849, 0x3927f4fe), TOBN(0xf91fbf94, 0x759aa7c5),
+           TOBN(0x985af769, 0x6be90a51), TOBN(0xc1277b78, 0x78ccb823)},
+          {TOBN(0x395b656e, 0xe7a75952), TOBN(0x00df7de0, 0x928da5f5),
+           TOBN(0x09c23175, 0x4ca4454f), TOBN(0x4ec971f4, 0x7aa2d3c1)}},
+         {{TOBN(0x45c3c507, 0xe75d9ccc), TOBN(0x63b7be8a, 0x3dc90306),
+           TOBN(0x37e09c66, 0x5db44bdc), TOBN(0x50d60da1, 0x6841c6a2)},
+          {TOBN(0x6f9b65ee, 0x08df1b12), TOBN(0x38734879, 0x7ff089df),
+           TOBN(0x9c331a66, 0x3fe8013d), TOBN(0x017f5de9, 0x5f42fcc8)}},
+         {{TOBN(0x43077866, 0xe8e57567), TOBN(0xc9f781ce, 0xf9fcdb18),
+           TOBN(0x38131dda, 0x9b12e174), TOBN(0x25d84aa3, 0x8a03752a)},
+          {TOBN(0x45e09e09, 0x4d0c0ce2), TOBN(0x1564008b, 0x92bebba5),
+           TOBN(0xf7e8ad31, 0xa87284c7), TOBN(0xb7c4b46c, 0x97e7bbaa)}},
+         {{TOBN(0x3e22a7b3, 0x97acf4ec), TOBN(0x0426c400, 0x5ea8b640),
+           TOBN(0x5e3295a6, 0x4e969285), TOBN(0x22aabc59, 0xa6a45670)},
+          {TOBN(0xb929714c, 0x5f5942bc), TOBN(0x9a6168bd, 0xfa3182ed),
+           TOBN(0x2216a665, 0x104152ba), TOBN(0x46908d03, 0xb6926368)}}},
+        {{{TOBN(0xa9f5d874, 0x5a1251fb), TOBN(0x967747a8, 0xc72725c7),
+           TOBN(0x195c33e5, 0x31ffe89e), TOBN(0x609d210f, 0xe964935e)},
+          {TOBN(0xcafd6ca8, 0x2fe12227), TOBN(0xaf9b5b96, 0x0426469d),
+           TOBN(0x2e9ee04c, 0x5693183c), TOBN(0x1084a333, 0xc8146fef)}},
+         {{TOBN(0x96649933, 0xaed1d1f7), TOBN(0x566eaff3, 0x50563090),
+           TOBN(0x345057f0, 0xad2e39cf), TOBN(0x148ff65b, 0x1f832124)},
+          {TOBN(0x042e89d4, 0xcf94cf0d), TOBN(0x319bec84, 0x520c58b3),
+           TOBN(0x2a267626, 0x5361aa0d), TOBN(0xc86fa302, 0x8fbc87ad)}},
+         {{TOBN(0xfc83d2ab, 0x5c8b06d5), TOBN(0xb1a785a2, 0xfe4eac46),
+           TOBN(0xb99315bc, 0x846f7779), TOBN(0xcf31d816, 0xef9ea505)},
+          {TOBN(0x2391fe6a, 0x15d7dc85), TOBN(0x2f132b04, 0xb4016b33),
+           TOBN(0x29547fe3, 0x181cb4c7), TOBN(0xdb66d8a6, 0x650155a1)}},
+         {{TOBN(0x6b66d7e1, 0xadc1696f), TOBN(0x98ebe593, 0x0acd72d0),
+           TOBN(0x65f24550, 0xcc1b7435), TOBN(0xce231393, 0xb4b9a5ec)},
+          {TOBN(0x234a22d4, 0xdb067df9), TOBN(0x98dda095, 0xcaff9b00),
+           TOBN(0x1bbc75a0, 0x6100c9c1), TOBN(0x1560a9c8, 0x939cf695)}},
+         {{TOBN(0xcf006d3e, 0x99e0925f), TOBN(0x2dd74a96, 0x6322375a),
+           TOBN(0xc58b446a, 0xb56af5ba), TOBN(0x50292683, 0xe0b9b4f1)},
+          {TOBN(0xe2c34cb4, 0x1aeaffa3), TOBN(0x8b17203f, 0x9b9587c1),
+           TOBN(0x6d559207, 0xead1350c), TOBN(0x2b66a215, 0xfb7f9604)}},
+         {{TOBN(0x0850325e, 0xfe51bf74), TOBN(0x9c4f579e, 0x5e460094),
+           TOBN(0x5c87b92a, 0x76da2f25), TOBN(0x889de4e0, 0x6febef33)},
+          {TOBN(0x6900ec06, 0x646083ce), TOBN(0xbe2a0335, 0xbfe12773),
+           TOBN(0xadd1da35, 0xc5344110), TOBN(0x757568b7, 0xb802cd20)}},
+         {{TOBN(0x75559779, 0x00f7e6c8), TOBN(0x38e8b94f, 0x0facd2f0),
+           TOBN(0xfea1f3af, 0x03fde375), TOBN(0x5e11a1d8, 0x75881dfc)},
+          {TOBN(0xb3a6b02e, 0xc1e2f2ef), TOBN(0x193d2bbb, 0xc605a6c5),
+           TOBN(0x325ffeee, 0x339a0b2d), TOBN(0x27b6a724, 0x9e0c8846)}},
+         {{TOBN(0xe4050f1c, 0xf1c367ca), TOBN(0x9bc85a9b, 0xc90fbc7d),
+           TOBN(0xa373c4a2, 0xe1a11032), TOBN(0xb64232b7, 0xad0393a9)},
+          {TOBN(0xf5577eb0, 0x167dad29), TOBN(0x1604f301, 0x94b78ab2),
+           TOBN(0x0baa94af, 0xe829348b), TOBN(0x77fbd8dd, 0x41654342)}},
+         {{TOBN(0xdab50ea5, 0xb964e39a), TOBN(0xd4c29e3c, 0xd0d3c76e),
+           TOBN(0x80dae67c, 0x56d11964), TOBN(0x7307a8bf, 0xe5ffcc2f)},
+          {TOBN(0x65bbc1aa, 0x91708c3b), TOBN(0xa151e62c, 0x28bf0eeb),
+           TOBN(0x6cb53381, 0x6fa34db7), TOBN(0x5139e05c, 0xa29403a8)}},
+         {{TOBN(0x6ff651b4, 0x94a7cd2e), TOBN(0x5671ffd1, 0x0699336c),
+           TOBN(0x6f5fd2cc, 0x979a896a), TOBN(0x11e893a8, 0xd8148cef)},
+          {TOBN(0x988906a1, 0x65cf7b10), TOBN(0x81b67178, 0xc50d8485),
+           TOBN(0x7c0deb35, 0x8a35b3de), TOBN(0x423ac855, 0xc1d29799)}},
+         {{TOBN(0xaf580d87, 0xdac50b74), TOBN(0x28b2b89f, 0x5869734c),
+           TOBN(0x99a3b936, 0x874e28fb), TOBN(0xbb2c9190, 0x25f3f73a)},
+          {TOBN(0x199f6918, 0x84a9d5b7), TOBN(0x7ebe2325, 0x7e770374),
+           TOBN(0xf442e107, 0x0738efe2), TOBN(0xcf9f3f56, 0xcf9082d2)}},
+         {{TOBN(0x719f69e1, 0x09618708), TOBN(0xcc9e8364, 0xc183f9b1),
+           TOBN(0xec203a95, 0x366a21af), TOBN(0x6aec5d6d, 0x068b141f)},
+          {TOBN(0xee2df78a, 0x994f04e9), TOBN(0xb39ccae8, 0x271245b0),
+           TOBN(0xb875a4a9, 0x97e43f4f), TOBN(0x507dfe11, 0xdb2cea98)}},
+         {{TOBN(0x4fbf81cb, 0x489b03e9), TOBN(0xdb86ec5b, 0x6ec414fa),
+           TOBN(0xfad444f9, 0xf51b3ae5), TOBN(0xca7d33d6, 0x1914e3fe)},
+          {TOBN(0xa9c32f5c, 0x0ae6c4d0), TOBN(0xa9ca1d1e, 0x73969568),
+           TOBN(0x98043c31, 0x1aa7467e), TOBN(0xe832e75c, 0xe21b5ac6)}},
+         {{TOBN(0x314b7aea, 0x5232123d), TOBN(0x08307c8c, 0x65ae86db),
+           TOBN(0x06e7165c, 0xaa4668ed), TOBN(0xb170458b, 0xb4d3ec39)},
+          {TOBN(0x4d2e3ec6, 0xc19bb986), TOBN(0xc5f34846, 0xae0304ed),
+           TOBN(0x917695a0, 0x6c9f9722), TOBN(0x6c7f7317, 0x4cab1c0a)}},
+         {{TOBN(0x6295940e, 0x9d6d2e8b), TOBN(0xd318b8c1, 0x549f7c97),
+           TOBN(0x22453204, 0x97713885), TOBN(0x468d834b, 0xa8a440fe)},
+          {TOBN(0xd81fe5b2, 0xbfba796e), TOBN(0x152364db, 0x6d71f116),
+           TOBN(0xbb8c7c59, 0xb5b66e53), TOBN(0x0b12c61b, 0x2641a192)}},
+         {{TOBN(0x31f14802, 0xfcf0a7fd), TOBN(0x42fd0789, 0x5488b01e),
+           TOBN(0x71d78d6d, 0x9952b498), TOBN(0x8eb572d9, 0x07ac5201)},
+          {TOBN(0xe0a2a44c, 0x4d194a88), TOBN(0xd2b63fd9, 0xba017e66),
+           TOBN(0x78efc6c8, 0xf888aefc), TOBN(0xb76f6bda, 0x4a881a11)}},
+         {{TOBN(0x187f314b, 0xb46c2397), TOBN(0x004cf566, 0x5ded2819),
+           TOBN(0xa9ea5704, 0x38764d34), TOBN(0xbba45217, 0x78084709)},
+          {TOBN(0x06474571, 0x1171121e), TOBN(0xad7b7eb1, 0xe7c9b671),
+           TOBN(0xdacfbc40, 0x730f7507), TOBN(0x178cd8c6, 0xc7ad7bd1)}},
+         {{TOBN(0xbf0be101, 0xb2a67238), TOBN(0x3556d367, 0xaf9c14f2),
+           TOBN(0x104b7831, 0xa5662075), TOBN(0x58ca59bb, 0x79d9e60a)},
+          {TOBN(0x4bc45392, 0xa569a73b), TOBN(0x517a52e8, 0x5698f6c9),
+           TOBN(0x85643da5, 0xaeadd755), TOBN(0x1aed0cd5, 0x2a581b84)}},
+         {{TOBN(0xb9b4ff84, 0x80af1372), TOBN(0x244c3113, 0xf1ba5d1f),
+           TOBN(0x2a5dacbe, 0xf5f98d31), TOBN(0x2c3323e8, 0x4375bc2a)},
+          {TOBN(0x17a3ab4a, 0x5594b1dd), TOBN(0xa1928bfb, 0xceb4797e),
+           TOBN(0xe83af245, 0xe4886a19), TOBN(0x8979d546, 0x72b5a74a)}},
+         {{TOBN(0xa0f726bc, 0x19f9e967), TOBN(0xd9d03152, 0xe8fbbf4e),
+           TOBN(0xcfd6f51d, 0xb7707d40), TOBN(0x633084d9, 0x63f6e6e0)},
+          {TOBN(0xedcd9cdc, 0x55667eaf), TOBN(0x73b7f92b, 0x2e44d56f),
+           TOBN(0xfb2e39b6, 0x4e962b14), TOBN(0x7d408f6e, 0xf671fcbf)}},
+         {{TOBN(0xcc634ddc, 0x164a89bb), TOBN(0x74a42bb2, 0x3ef3bd05),
+           TOBN(0x1280dbb2, 0x428decbb), TOBN(0x6103f6bb, 0x402c8596)},
+          {TOBN(0xfa2bf581, 0x355a5752), TOBN(0x562f96a8, 0x00946674),
+           TOBN(0x4e4ca16d, 0x6da0223b), TOBN(0xfe47819f, 0x28d3aa25)}},
+         {{TOBN(0x9eea3075, 0xf8dfcf8a), TOBN(0xa284f0aa, 0x95669825),
+           TOBN(0xb3fca250, 0x867d3fd8), TOBN(0x20757b5f, 0x269d691e)},
+          {TOBN(0xf2c24020, 0x93b8a5de), TOBN(0xd3f93359, 0xebc06da6),
+           TOBN(0x1178293e, 0xb2739c33), TOBN(0xd2a3e770, 0xbcd686e5)}},
+         {{TOBN(0xa76f49f4, 0xcd941534), TOBN(0x0d37406b, 0xe3c71c0e),
+           TOBN(0x172d9397, 0x3b97f7e3), TOBN(0xec17e239, 0xbd7fd0de)},
+          {TOBN(0xe3290551, 0x6f496ba2), TOBN(0x6a693172, 0x36ad50e7),
+           TOBN(0xc4e539a2, 0x83e7eff5), TOBN(0x752737e7, 0x18e1b4cf)}},
+         {{TOBN(0xa2f7932c, 0x68af43ee), TOBN(0x5502468e, 0x703d00bd),
+           TOBN(0xe5dc978f, 0x2fb061f5), TOBN(0xc9a1904a, 0x28c815ad)},
+          {TOBN(0xd3af538d, 0x470c56a4), TOBN(0x159abc5f, 0x193d8ced),
+           TOBN(0x2a37245f, 0x20108ef3), TOBN(0xfa17081e, 0x223f7178)}},
+         {{TOBN(0x27b0fb2b, 0x10c8c0f5), TOBN(0x2102c3ea, 0x40650547),
+           TOBN(0x594564df, 0x8ac3bfa7), TOBN(0x98102033, 0x509dad96)},
+          {TOBN(0x6989643f, 0xf1d18a13), TOBN(0x35eebd91, 0xd7fc5af0),
+           TOBN(0x078d096a, 0xfaeaafd8), TOBN(0xb7a89341, 0xdef3de98)}},
+         {{TOBN(0x2a206e8d, 0xecf2a73a), TOBN(0x066a6397, 0x8e551994),
+           TOBN(0x3a6a088a, 0xb98d53a2), TOBN(0x0ce7c67c, 0x2d1124aa)},
+          {TOBN(0x48cec671, 0x759a113c), TOBN(0xe3b373d3, 0x4f6f67fa),
+           TOBN(0x5455d479, 0xfd36727b), TOBN(0xe5a428ee, 0xa13c0d81)}},
+         {{TOBN(0xb853dbc8, 0x1c86682b), TOBN(0xb78d2727, 0xb8d02b2a),
+           TOBN(0xaaf69bed, 0x8ebc329a), TOBN(0xdb6b40b3, 0x293b2148)},
+          {TOBN(0xe42ea77d, 0xb8c4961f), TOBN(0xb1a12f7c, 0x20e5e0ab),
+           TOBN(0xa0ec5274, 0x79e8b05e), TOBN(0x68027391, 0xfab60a80)}},
+         {{TOBN(0x6bfeea5f, 0x16b1bd5e), TOBN(0xf957e420, 0x4de30ad3),
+           TOBN(0xcbaf664e, 0x6a353b9e), TOBN(0x5c873312, 0x26d14feb)},
+          {TOBN(0x4e87f98c, 0xb65f57cb), TOBN(0xdb60a621, 0x5e0cdd41),
+           TOBN(0x67c16865, 0xa6881440), TOBN(0x1093ef1a, 0x46ab52aa)}},
+         {{TOBN(0xc095afb5, 0x3f4ece64), TOBN(0x6a6bb02e, 0x7604551a),
+           TOBN(0x55d44b4e, 0x0b26b8cd), TOBN(0xe5f9a999, 0xf971268a)},
+          {TOBN(0xc08ec425, 0x11a7de84), TOBN(0x83568095, 0xfda469dd),
+           TOBN(0x737bfba1, 0x6c6c90a2), TOBN(0x1cb9c4a0, 0xbe229831)}},
+         {{TOBN(0x93bccbba, 0xbb2eec64), TOBN(0xa0c23b64, 0xda03adbe),
+           TOBN(0x5f7aa00a, 0xe0e86ac4), TOBN(0x470b941e, 0xfc1401e6)},
+          {TOBN(0x5ad8d679, 0x9df43574), TOBN(0x4ccfb8a9, 0x0f65d810),
+           TOBN(0x1bce80e3, 0xaa7fbd81), TOBN(0x273291ad, 0x9508d20a)}},
+         {{TOBN(0xf5c4b46b, 0x42a92806), TOBN(0x810684ec, 0xa86ab44a),
+           TOBN(0x4591640b, 0xca0bc9f8), TOBN(0xb5efcdfc, 0x5c4b6054)},
+          {TOBN(0x16fc8907, 0x6e9edd12), TOBN(0xe29d0b50, 0xd4d792f9),
+           TOBN(0xa45fd01c, 0x9b03116d), TOBN(0x85035235, 0xc81765a4)}},
+         {{TOBN(0x1fe2a9b2, 0xb4b4b67c), TOBN(0xc1d10df0, 0xe8020604),
+           TOBN(0x9d64abfc, 0xbc8058d8), TOBN(0x8943b9b2, 0x712a0fbb)},
+          {TOBN(0x90eed914, 0x3b3def04), TOBN(0x85ab3aa2, 0x4ce775ff),
+           TOBN(0x605fd4ca, 0x7bbc9040), TOBN(0x8b34a564, 0xe2c75dfb)}},
+         {{TOBN(0x41ffc94a, 0x10358560), TOBN(0x2d8a5072, 0x9e5c28aa),
+           TOBN(0xe915a0fc, 0x4cc7eb15), TOBN(0xe9efab05, 0x8f6d0f5d)},
+          {TOBN(0xdbab47a9, 0xd19e9b91), TOBN(0x8cfed745, 0x0276154c),
+           TOBN(0x154357ae, 0x2cfede0d), TOBN(0x520630df, 0x19f5a4ef)}},
+         {{TOBN(0x25759f7c, 0xe382360f), TOBN(0xb6db05c9, 0x88bf5857),
+           TOBN(0x2917d61d, 0x6c58d46c), TOBN(0x14f8e491, 0xfd20cb7a)},
+          {TOBN(0xb68a727a, 0x11c20340), TOBN(0x0386f86f, 0xaf7ccbb6),
+           TOBN(0x5c8bc6cc, 0xfee09a20), TOBN(0x7d76ff4a, 0xbb7eea35)}},
+         {{TOBN(0xa7bdebe7, 0xdb15be7a), TOBN(0x67a08054, 0xd89f0302),
+           TOBN(0x56bf0ea9, 0xc1193364), TOBN(0xc8244467, 0x62837ebe)},
+          {TOBN(0x32bd8e8b, 0x20d841b8), TOBN(0x127a0548, 0xdbb8a54f),
+           TOBN(0x83dd4ca6, 0x63b20236), TOBN(0x87714718, 0x203491fa)}},
+         {{TOBN(0x4dabcaaa, 0xaa8a5288), TOBN(0x91cc0c8a, 0xaf23a1c9),
+           TOBN(0x34c72c6a, 0x3f220e0c), TOBN(0xbcc20bdf, 0x1232144a)},
+          {TOBN(0x6e2f42da, 0xa20ede1b), TOBN(0xc441f00c, 0x74a00515),
+           TOBN(0xbf46a5b6, 0x734b8c4b), TOBN(0x57409503, 0x7b56c9a4)}},
+         {{TOBN(0x9f735261, 0xe4585d45), TOBN(0x9231faed, 0x6734e642),
+           TOBN(0x1158a176, 0xbe70ee6c), TOBN(0x35f1068d, 0x7c3501bf)},
+          {TOBN(0x6beef900, 0xa2d26115), TOBN(0x649406f2, 0xef0afee3),
+           TOBN(0x3f43a60a, 0xbc2420a1), TOBN(0x509002a7, 0xd5aee4ac)}},
+         {{TOBN(0xb46836a5, 0x3ff3571b), TOBN(0x24f98b78, 0x837927c1),
+           TOBN(0x6254256a, 0x4533c716), TOBN(0xf27abb0b, 0xd07ee196)},
+          {TOBN(0xd7cf64fc, 0x5c6d5bfd), TOBN(0x6915c751, 0xf0cd7a77),
+           TOBN(0xd9f59012, 0x8798f534), TOBN(0x772b0da8, 0xf81d8b5f)}},
+         {{TOBN(0x1244260c, 0x2e03fa69), TOBN(0x36cf0e3a, 0x3be1a374),
+           TOBN(0x6e7c1633, 0xef06b960), TOBN(0xa71a4c55, 0x671f90f6)},
+          {TOBN(0x7a941251, 0x33c673db), TOBN(0xc0bea510, 0x73e8c131),
+           TOBN(0x61a8a699, 0xd4f6c734), TOBN(0x25e78c88, 0x341ed001)}},
+         {{TOBN(0x5c18acf8, 0x8e2f7d90), TOBN(0xfdbf33d7, 0x77be32cd),
+           TOBN(0x0a085cd7, 0xd2eb5ee9), TOBN(0x2d702cfb, 0xb3201115)},
+          {TOBN(0xb6e0ebdb, 0x85c88ce8), TOBN(0x23a3ce3c, 0x1e01d617),
+           TOBN(0x3041618e, 0x567333ac), TOBN(0x9dd0fd8f, 0x157edb6b)}},
+         {{TOBN(0x27f74702, 0xb57872b8), TOBN(0x2ef26b4f, 0x657d5fe1),
+           TOBN(0x95426f0a, 0x57cf3d40), TOBN(0x847e2ad1, 0x65a6067a)},
+          {TOBN(0xd474d9a0, 0x09996a74), TOBN(0x16a56acd, 0x2a26115c),
+           TOBN(0x02a615c3, 0xd16f4d43), TOBN(0xcc3fc965, 0xaadb85b7)}},
+         {{TOBN(0x386bda73, 0xce07d1b0), TOBN(0xd82910c2, 0x58ad4178),
+           TOBN(0x124f82cf, 0xcd2617f4), TOBN(0xcc2f5e8d, 0xef691770)},
+          {TOBN(0x82702550, 0xb8c30ccc), TOBN(0x7b856aea, 0x1a8e575a),
+           TOBN(0xbb822fef, 0xb1ab9459), TOBN(0x085928bc, 0xec24e38e)}},
+         {{TOBN(0x5d0402ec, 0xba8f4b4d), TOBN(0xc07cd4ba, 0x00b4d58b),
+           TOBN(0x5d8dffd5, 0x29227e7a), TOBN(0x61d44d0c, 0x31bf386f)},
+          {TOBN(0xe486dc2b, 0x135e6f4d), TOBN(0x680962eb, 0xe79410ef),
+           TOBN(0xa61bd343, 0xf10088b5), TOBN(0x6aa76076, 0xe2e28686)}},
+         {{TOBN(0x80463d11, 0x8fb98871), TOBN(0xcb26f5c3, 0xbbc76aff),
+           TOBN(0xd4ab8edd, 0xfbe03614), TOBN(0xc8eb579b, 0xc0cf2dee)},
+          {TOBN(0xcc004c15, 0xc93bae41), TOBN(0x46fbae5d, 0x3aeca3b2),
+           TOBN(0x671235cf, 0x0f1e9ab1), TOBN(0xadfba934, 0x9ec285c1)}},
+         {{TOBN(0x88ded013, 0xf216c980), TOBN(0xc8ac4fb8, 0xf79e0bc1),
+           TOBN(0xa29b89c6, 0xfb97a237), TOBN(0xb697b780, 0x9922d8e7)},
+          {TOBN(0x3142c639, 0xddb945b5), TOBN(0x447b06c7, 0xe094c3a9),
+           TOBN(0xcdcb3642, 0x72266c90), TOBN(0x633aad08, 0xa9385046)}},
+         {{TOBN(0xa36c936b, 0xb57c6477), TOBN(0x871f8b64, 0xe94dbcc6),
+           TOBN(0x28d0fb62, 0xa591a67b), TOBN(0x9d40e081, 0xc1d926f5)},
+          {TOBN(0x3111eaf6, 0xf2d84b5a), TOBN(0x228993f9, 0xa565b644),
+           TOBN(0x0ccbf592, 0x2c83188b), TOBN(0xf87b30ab, 0x3df3e197)}},
+         {{TOBN(0xb8658b31, 0x7642bca8), TOBN(0x1a032d7f, 0x52800f17),
+           TOBN(0x051dcae5, 0x79bf9445), TOBN(0xeba6b8ee, 0x54a2e253)},
+          {TOBN(0x5c8b9cad, 0xd4485692), TOBN(0x84bda40e, 0x8986e9be),
+           TOBN(0xd16d16a4, 0x2f0db448), TOBN(0x8ec80050, 0xa14d4188)}},
+         {{TOBN(0xb2b26107, 0x98fa7aaa), TOBN(0x41209ee4, 0xf073aa4e),
+           TOBN(0xf1570359, 0xf2d6b19b), TOBN(0xcbe6868c, 0xfc577caf)},
+          {TOBN(0x186c4bdc, 0x32c04dd3), TOBN(0xa6c35fae, 0xcfeee397),
+           TOBN(0xb4a1b312, 0xf086c0cf), TOBN(0xe0a5ccc6, 0xd9461fe2)}},
+         {{TOBN(0xc32278aa, 0x1536189f), TOBN(0x1126c55f, 0xba6df571),
+           TOBN(0x0f71a602, 0xb194560e), TOBN(0x8b2d7405, 0x324bd6e1)},
+          {TOBN(0x8481939e, 0x3738be71), TOBN(0xb5090b1a, 0x1a4d97a9),
+           TOBN(0x116c65a3, 0xf05ba915), TOBN(0x21863ad3, 0xaae448aa)}},
+         {{TOBN(0xd24e2679, 0xa7aae5d3), TOBN(0x7076013d, 0x0de5c1c4),
+           TOBN(0x2d50f8ba, 0xbb05b629), TOBN(0x73c1abe2, 0x6e66efbb)},
+          {TOBN(0xefd4b422, 0xf2488af7), TOBN(0xe4105d02, 0x663ba575),
+           TOBN(0x7eb60a8b, 0x53a69457), TOBN(0x62210008, 0xc945973b)}},
+         {{TOBN(0xfb255478, 0x77a50ec6), TOBN(0xbf0392f7, 0x0a37a72c),
+           TOBN(0xa0a7a19c, 0x4be18e7a), TOBN(0x90d8ea16, 0x25b1e0af)},
+          {TOBN(0x7582a293, 0xef953f57), TOBN(0x90a64d05, 0xbdc5465a),
+           TOBN(0xca79c497, 0xe2510717), TOBN(0x560dbb7c, 0x18cb641f)}},
+         {{TOBN(0x1d8e3286, 0x4b66abfb), TOBN(0xd26f52e5, 0x59030900),
+           TOBN(0x1ee3f643, 0x5584941a), TOBN(0x6d3b3730, 0x569f5958)},
+          {TOBN(0x9ff2a62f, 0x4789dba5), TOBN(0x91fcb815, 0x72b5c9b7),
+           TOBN(0xf446cb7d, 0x6c8f9a0e), TOBN(0x48f625c1, 0x39b7ecb5)}},
+         {{TOBN(0xbabae801, 0x1c6219b8), TOBN(0xe7a562d9, 0x28ac2f23),
+           TOBN(0xe1b48732, 0x26e20588), TOBN(0x06ee1cad, 0x775af051)},
+          {TOBN(0xda29ae43, 0xfaff79f7), TOBN(0xc141a412, 0x652ee9e0),
+           TOBN(0x1e127f6f, 0x195f4bd0), TOBN(0x29c6ab4f, 0x072f34f8)}},
+         {{TOBN(0x7b7c1477, 0x30448112), TOBN(0x82b51af1, 0xe4a38656),
+           TOBN(0x2bf2028a, 0x2f315010), TOBN(0xc9a4a01f, 0x6ea88cd4)},
+          {TOBN(0xf63e95d8, 0x257e5818), TOBN(0xdd8efa10, 0xb4519b16),
+           TOBN(0xed8973e0, 0x0da910bf), TOBN(0xed49d077, 0x5c0fe4a9)}},
+         {{TOBN(0xac3aac5e, 0xb7caee1e), TOBN(0x1033898d, 0xa7f4da57),
+           TOBN(0x42145c0e, 0x5c6669b9), TOBN(0x42daa688, 0xc1aa2aa0)},
+          {TOBN(0x629cc15c, 0x1a1d885a), TOBN(0x25572ec0, 0xf4b76817),
+           TOBN(0x8312e435, 0x9c8f8f28), TOBN(0x8107f8cd, 0x81965490)}},
+         {{TOBN(0x516ff3a3, 0x6fa6110c), TOBN(0x74fb1eb1, 0xfb93561f),
+           TOBN(0x6c0c9047, 0x8457522b), TOBN(0xcfd32104, 0x6bb8bdc6)},
+          {TOBN(0x2d6884a2, 0xcc80ad57), TOBN(0x7c27fc35, 0x86a9b637),
+           TOBN(0x3461baed, 0xadf4e8cd), TOBN(0x1d56251a, 0x617242f0)}},
+         {{TOBN(0x0b80d209, 0xc955bef4), TOBN(0xdf02cad2, 0x06adb047),
+           TOBN(0xf0d7cb91, 0x5ec74fee), TOBN(0xd2503375, 0x1111ba44)},
+          {TOBN(0x9671755e, 0xdf53cb36), TOBN(0x54dcb612, 0x3368551b),
+           TOBN(0x66d69aac, 0xc8a025a4), TOBN(0x6be946c6, 0xe77ef445)}},
+         {{TOBN(0x719946d1, 0xa995e094), TOBN(0x65e848f6, 0xe51e04d8),
+           TOBN(0xe62f3300, 0x6a1e3113), TOBN(0x1541c7c1, 0x501de503)},
+          {TOBN(0x4daac9fa, 0xf4acfade), TOBN(0x0e585897, 0x44cd0b71),
+           TOBN(0x544fd869, 0x0a51cd77), TOBN(0x60fc20ed, 0x0031016d)}},
+         {{TOBN(0x58b404ec, 0xa4276867), TOBN(0x46f6c3cc, 0x34f34993),
+           TOBN(0x477ca007, 0xc636e5bd), TOBN(0x8018f5e5, 0x7c458b47)},
+          {TOBN(0xa1202270, 0xe47b668f), TOBN(0xcef48ccd, 0xee14f203),
+           TOBN(0x23f98bae, 0x62ff9b4d), TOBN(0x55acc035, 0xc589eddd)}},
+         {{TOBN(0x3fe712af, 0x64db4444), TOBN(0x19e9d634, 0xbecdd480),
+           TOBN(0xe08bc047, 0xa930978a), TOBN(0x2dbf24ec, 0xa1280733)},
+          {TOBN(0x3c0ae38c, 0x2cd706b2), TOBN(0x5b012a5b, 0x359017b9),
+           TOBN(0x3943c38c, 0x72e0f5ae), TOBN(0x786167ea, 0x57176fa3)}},
+         {{TOBN(0xe5f9897d, 0x594881dc), TOBN(0x6b5efad8, 0xcfb820c1),
+           TOBN(0xb2179093, 0xd55018de), TOBN(0x39ad7d32, 0x0bac56ce)},
+          {TOBN(0xb55122e0, 0x2cfc0e81), TOBN(0x117c4661, 0xf6d89daa),
+           TOBN(0x362d01e1, 0xcb64fa09), TOBN(0x6a309b4e, 0x3e9c4ddd)}},
+         {{TOBN(0xfa979fb7, 0xabea49b1), TOBN(0xb4b1d27d, 0x10e2c6c5),
+           TOBN(0xbd61c2c4, 0x23afde7a), TOBN(0xeb6614f8, 0x9786d358)},
+          {TOBN(0x4a5d816b, 0x7f6f7459), TOBN(0xe431a44f, 0x09360e7b),
+           TOBN(0x8c27a032, 0xc309914c), TOBN(0xcea5d68a, 0xcaede3d8)}},
+         {{TOBN(0x3668f665, 0x3a0a3f95), TOBN(0x89369416, 0x7ceba27b),
+           TOBN(0x89981fad, 0xe4728fe9), TOBN(0x7102c8a0, 0x8a093562)},
+          {TOBN(0xbb80310e, 0x235d21c8), TOBN(0x505e55d1, 0xbefb7f7b),
+           TOBN(0xa0a90811, 0x12958a67), TOBN(0xd67e106a, 0x4d851fef)}},
+         {{TOBN(0xb84011a9, 0x431dd80e), TOBN(0xeb7c7cca, 0x73306cd9),
+           TOBN(0x20fadd29, 0xd1b3b730), TOBN(0x83858b5b, 0xfe37b3d3)},
+          {TOBN(0xbf4cd193, 0xb6251d5c), TOBN(0x1cca1fd3, 0x1352d952),
+           TOBN(0xc66157a4, 0x90fbc051), TOBN(0x7990a638, 0x89b98636)}}},
+        {{{TOBN(0xe5aa692a, 0x87dec0e1), TOBN(0x010ded8d, 0xf7b39d00),
+           TOBN(0x7b1b80c8, 0x54cfa0b5), TOBN(0x66beb876, 0xa0f8ea28)},
+          {TOBN(0x50d7f531, 0x3476cd0e), TOBN(0xa63d0e65, 0xb08d3949),
+           TOBN(0x1a09eea9, 0x53479fc6), TOBN(0x82ae9891, 0xf499e742)}},
+         {{TOBN(0xab58b910, 0x5ca7d866), TOBN(0x582967e2, 0x3adb3b34),
+           TOBN(0x89ae4447, 0xcceac0bc), TOBN(0x919c667c, 0x7bf56af5)},
+          {TOBN(0x9aec17b1, 0x60f5dcd7), TOBN(0xec697b9f, 0xddcaadbc),
+           TOBN(0x0b98f341, 0x463467f5), TOBN(0xb187f1f7, 0xa967132f)}},
+         {{TOBN(0x90fe7a1d, 0x214aeb18), TOBN(0x1506af3c, 0x741432f7),
+           TOBN(0xbb5565f9, 0xe591a0c4), TOBN(0x10d41a77, 0xb44f1bc3)},
+          {TOBN(0xa09d65e4, 0xa84bde96), TOBN(0x42f060d8, 0xf20a6a1c),
+           TOBN(0x652a3bfd, 0xf27f9ce7), TOBN(0xb6bdb65c, 0x3b3d739f)}},
+         {{TOBN(0xeb5ddcb6, 0xec7fae9f), TOBN(0x995f2714, 0xefb66e5a),
+           TOBN(0xdee95d8e, 0x69445d52), TOBN(0x1b6c2d46, 0x09e27620)},
+          {TOBN(0x32621c31, 0x8129d716), TOBN(0xb03909f1, 0x0958c1aa),
+           TOBN(0x8c468ef9, 0x1af4af63), TOBN(0x162c429f, 0xfba5cdf6)}},
+         {{TOBN(0x2f682343, 0x753b9371), TOBN(0x29cab45a, 0x5f1f9cd7),
+           TOBN(0x571623ab, 0xb245db96), TOBN(0xc507db09, 0x3fd79999)},
+          {TOBN(0x4e2ef652, 0xaf036c32), TOBN(0x86f0cc78, 0x05018e5c),
+           TOBN(0xc10a73d4, 0xab8be350), TOBN(0x6519b397, 0x7e826327)}},
+         {{TOBN(0xe8cb5eef, 0x9c053df7), TOBN(0x8de25b37, 0xb300ea6f),
+           TOBN(0xdb03fa92, 0xc849cffb), TOBN(0x242e43a7, 0xe84169bb)},
+          {TOBN(0xe4fa51f4, 0xdd6f958e), TOBN(0x6925a77f, 0xf4445a8d),
+           TOBN(0xe6e72a50, 0xe90d8949), TOBN(0xc66648e3, 0x2b1f6390)}},
+         {{TOBN(0xb2ab1957, 0x173e460c), TOBN(0x1bbbce75, 0x30704590),
+           TOBN(0xc0a90dbd, 0xdb1c7162), TOBN(0x505e399e, 0x15cdd65d)},
+          {TOBN(0x68434dcb, 0x57797ab7), TOBN(0x60ad35ba, 0x6a2ca8e8),
+           TOBN(0x4bfdb1e0, 0xde3336c1), TOBN(0xbbef99eb, 0xd8b39015)}},
+         {{TOBN(0x6c3b96f3, 0x1711ebec), TOBN(0x2da40f1f, 0xce98fdc4),
+           TOBN(0xb99774d3, 0x57b4411f), TOBN(0x87c8bdf4, 0x15b65bb6)},
+          {TOBN(0xda3a89e3, 0xc2eef12d), TOBN(0xde95bb9b, 0x3c7471f3),
+           TOBN(0x600f225b, 0xd812c594), TOBN(0x54907c5d, 0x2b75a56b)}},
+         {{TOBN(0xa93cc5f0, 0x8db60e35), TOBN(0x743e3cd6, 0xfa833319),
+           TOBN(0x7dad5c41, 0xf81683c9), TOBN(0x70c1e7d9, 0x9c34107e)},
+          {TOBN(0x0edc4a39, 0xa6be0907), TOBN(0x36d47035, 0x86d0b7d3),
+           TOBN(0x8c76da03, 0x272bfa60), TOBN(0x0b4a07ea, 0x0f08a414)}},
+         {{TOBN(0x699e4d29, 0x45c1dd53), TOBN(0xcadc5898, 0x231debb5),
+           TOBN(0xdf49fcc7, 0xa77f00e0), TOBN(0x93057bbf, 0xa73e5a0e)},
+          {TOBN(0x2f8b7ecd, 0x027a4cd1), TOBN(0x114734b3, 0xc614011a),
+           TOBN(0xe7a01db7, 0x67677c68), TOBN(0x89d9be5e, 0x7e273f4f)}},
+         {{TOBN(0xd225cb2e, 0x089808ef), TOBN(0xf1f7a27d, 0xd59e4107),
+           TOBN(0x53afc761, 0x8211b9c9), TOBN(0x0361bc67, 0xe6819159)},
+          {TOBN(0x2a865d0b, 0x7f071426), TOBN(0x6a3c1810, 0xe7072567),
+           TOBN(0x3e3bca1e, 0x0d6bcabd), TOBN(0xa1b02bc1, 0x408591bc)}},
+         {{TOBN(0xe0deee59, 0x31fba239), TOBN(0xf47424d3, 0x98bd91d1),
+           TOBN(0x0f8886f4, 0x071a3c1d), TOBN(0x3f7d41e8, 0xa819233b)},
+          {TOBN(0x708623c2, 0xcf6eb998), TOBN(0x86bb49af, 0x609a287f),
+           TOBN(0x942bb249, 0x63c90762), TOBN(0x0ef6eea5, 0x55a9654b)}},
+         {{TOBN(0x5f6d2d72, 0x36f5defe), TOBN(0xfa9922dc, 0x56f99176),
+           TOBN(0x6c8c5ece, 0xf78ce0c7), TOBN(0x7b44589d, 0xbe09b55e)},
+          {TOBN(0xe11b3bca, 0x9ea83770), TOBN(0xd7fa2c7f, 0x2ab71547),
+           TOBN(0x2a3dd6fa, 0x2a1ddcc0), TOBN(0x09acb430, 0x5a7b7707)}},
+         {{TOBN(0x4add4a2e, 0x649d4e57), TOBN(0xcd53a2b0, 0x1917526e),
+           TOBN(0xc5262330, 0x20b44ac4), TOBN(0x4028746a, 0xbaa2c31d)},
+          {TOBN(0x51318390, 0x64291d4c), TOBN(0xbf48f151, 0xee5ad909),
+           TOBN(0xcce57f59, 0x7b185681), TOBN(0x7c3ac1b0, 0x4854d442)}},
+         {{TOBN(0x65587dc3, 0xc093c171), TOBN(0xae7acb24, 0x24f42b65),
+           TOBN(0x5a338adb, 0x955996cb), TOBN(0xc8e65675, 0x6051f91b)},
+          {TOBN(0x66711fba, 0x28b8d0b1), TOBN(0x15d74137, 0xb6c10a90),
+           TOBN(0x70cdd7eb, 0x3a232a80), TOBN(0xc9e2f07f, 0x6191ed24)}},
+         {{TOBN(0xa80d1db6, 0xf79588c0), TOBN(0xfa52fc69, 0xb55768cc),
+           TOBN(0x0b4df1ae, 0x7f54438a), TOBN(0x0cadd1a7, 0xf9b46a4f)},
+          {TOBN(0xb40ea6b3, 0x1803dd6f), TOBN(0x488e4fa5, 0x55eaae35),
+           TOBN(0x9f047d55, 0x382e4e16), TOBN(0xc9b5b7e0, 0x2f6e0c98)}},
+         {{TOBN(0x6b1bd2d3, 0x95762649), TOBN(0xa9604ee7, 0xc7aea3f6),
+           TOBN(0x3646ff27, 0x6dc6f896), TOBN(0x9bf0e7f5, 0x2860bad1)},
+          {TOBN(0x2d92c821, 0x7cb44b92), TOBN(0xa2f5ce63, 0xaea9c182),
+           TOBN(0xd0a2afb1, 0x9154a5fd), TOBN(0x482e474c, 0x95801da6)}},
+         {{TOBN(0xc19972d0, 0xb611c24b), TOBN(0x1d468e65, 0x60a8f351),
+           TOBN(0xeb758069, 0x7bcf6421), TOBN(0xec9dd0ee, 0x88fbc491)},
+          {TOBN(0x5b59d2bf, 0x956c2e32), TOBN(0x73dc6864, 0xdcddf94e),
+           TOBN(0xfd5e2321, 0xbcee7665), TOBN(0xa7b4f8ef, 0x5e9a06c4)}},
+         {{TOBN(0xfba918dd, 0x7280f855), TOBN(0xbbaac260, 0x8baec688),
+           TOBN(0xa3b3f00f, 0x33400f42), TOBN(0x3d2dba29, 0x66f2e6e4)},
+          {TOBN(0xb6f71a94, 0x98509375), TOBN(0x8f33031f, 0xcea423cc),
+           TOBN(0x009b8dd0, 0x4807e6fb), TOBN(0x5163cfe5, 0x5cdb954c)}},
+         {{TOBN(0x03cc8f17, 0xcf41c6e8), TOBN(0xf1f03c2a, 0x037b925c),
+           TOBN(0xc39c19cc, 0x66d2427c), TOBN(0x823d24ba, 0x7b6c18e4)},
+          {TOBN(0x32ef9013, 0x901f0b4f), TOBN(0x684360f1, 0xf8941c2e),
+           TOBN(0x0ebaff52, 0x2c28092e), TOBN(0x7891e4e3, 0x256c932f)}},
+         {{TOBN(0x51264319, 0xac445e3d), TOBN(0x553432e7, 0x8ea74381),
+           TOBN(0xe6eeaa69, 0x67e9c50a), TOBN(0x27ced284, 0x62e628c7)},
+          {TOBN(0x3f96d375, 0x7a4afa57), TOBN(0xde0a14c3, 0xe484c150),
+           TOBN(0x364a24eb, 0x38bd9923), TOBN(0x1df18da0, 0xe5177422)}},
+         {{TOBN(0x174e8f82, 0xd8d38a9b), TOBN(0x2e97c600, 0xe7de1391),
+           TOBN(0xc5709850, 0xa1c175dd), TOBN(0x969041a0, 0x32ae5035)},
+          {TOBN(0xcbfd533b, 0x76a2086b), TOBN(0xd6bba71b, 0xd7c2e8fe),
+           TOBN(0xb2d58ee6, 0x099dfb67), TOBN(0x3a8b342d, 0x064a85d9)}},
+         {{TOBN(0x3bc07649, 0x522f9be3), TOBN(0x690c075b, 0xdf1f49a8),
+           TOBN(0x80e1aee8, 0x3854ec42), TOBN(0x2a7dbf44, 0x17689dc7)},
+          {TOBN(0xc004fc0e, 0x3faf4078), TOBN(0xb2f02e9e, 0xdf11862c),
+           TOBN(0xf10a5e0f, 0xa0a1b7b3), TOBN(0x30aca623, 0x8936ec80)}},
+         {{TOBN(0xf83cbf05, 0x02f40d9a), TOBN(0x4681c468, 0x2c318a4d),
+           TOBN(0x98575618, 0x0e9c2674), TOBN(0xbe79d046, 0x1847092e)},
+          {TOBN(0xaf1e480a, 0x78bd01e0), TOBN(0x6dd359e4, 0x72a51db9),
+           TOBN(0x62ce3821, 0xe3afbab6), TOBN(0xc5cee5b6, 0x17733199)}},
+         {{TOBN(0xe08b30d4, 0x6ffd9fbb), TOBN(0x6e5bc699, 0x36c610b7),
+           TOBN(0xf343cff2, 0x9ce262cf), TOBN(0xca2e4e35, 0x68b914c1)},
+          {TOBN(0x011d64c0, 0x16de36c5), TOBN(0xe0b10fdd, 0x42e2b829),
+           TOBN(0x78942981, 0x6685aaf8), TOBN(0xe7511708, 0x230ede97)}},
+         {{TOBN(0x671ed8fc, 0x3b922bf8), TOBN(0xe4d8c0a0, 0x4c29b133),
+           TOBN(0x87eb1239, 0x3b6e99c4), TOBN(0xaff3974c, 0x8793beba)},
+          {TOBN(0x03749405, 0x2c18df9b), TOBN(0xc5c3a293, 0x91007139),
+           TOBN(0x6a77234f, 0xe37a0b95), TOBN(0x02c29a21, 0xb661c96b)}},
+         {{TOBN(0xc3aaf1d6, 0x141ecf61), TOBN(0x9195509e, 0x3bb22f53),
+           TOBN(0x29597404, 0x22d51357), TOBN(0x1b083822, 0x537bed60)},
+          {TOBN(0xcd7d6e35, 0xe07289f0), TOBN(0x1f94c48c, 0x6dd86eff),
+           TOBN(0xc8bb1f82, 0xeb0f9cfa), TOBN(0x9ee0b7e6, 0x1b2eb97d)}},
+         {{TOBN(0x5a52fe2e, 0x34d74e31), TOBN(0xa352c310, 0x3bf79ab6),
+           TOBN(0x97ff6c5a, 0xabfeeb8f), TOBN(0xbfbe8fef, 0xf5c97305)},
+          {TOBN(0xd6081ce6, 0xa7904608), TOBN(0x1f812f3a, 0xc4fca249),
+           TOBN(0x9b24bc9a, 0xb9e5e200), TOBN(0x91022c67, 0x38012ee8)}},
+         {{TOBN(0xe83d9c5d, 0x30a713a1), TOBN(0x4876e3f0, 0x84ef0f93),
+           TOBN(0xc9777029, 0xc1fbf928), TOBN(0xef7a6bb3, 0xbce7d2a4)},
+          {TOBN(0xb8067228, 0xdfa2a659), TOBN(0xd5cd3398, 0xd877a48f),
+           TOBN(0xbea4fd8f, 0x025d0f3f), TOBN(0xd67d2e35, 0x2eae7c2b)}},
+         {{TOBN(0x184de7d7, 0xcc5f4394), TOBN(0xb5551b5c, 0x4536e142),
+           TOBN(0x2e89b212, 0xd34aa60a), TOBN(0x14a96fea, 0xf50051d5)},
+          {TOBN(0x4e21ef74, 0x0d12bb0b), TOBN(0xc522f020, 0x60b9677e),
+           TOBN(0x8b12e467, 0x2df7731d), TOBN(0x39f80382, 0x7b326d31)}},
+         {{TOBN(0xdfb8630c, 0x39024a94), TOBN(0xaacb96a8, 0x97319452),
+           TOBN(0xd68a3961, 0xeda3867c), TOBN(0x0c58e2b0, 0x77c4ffca)},
+          {TOBN(0x3d545d63, 0x4da919fa), TOBN(0xef79b69a, 0xf15e2289),
+           TOBN(0x54bc3d3d, 0x808bab10), TOBN(0xc8ab3007, 0x45f82c37)}},
+         {{TOBN(0xc12738b6, 0x7c4a658a), TOBN(0xb3c47639, 0x40e72182),
+           TOBN(0x3b77be46, 0x8798e44f), TOBN(0xdc047df2, 0x17a7f85f)},
+          {TOBN(0x2439d4c5, 0x5e59d92d), TOBN(0xcedca475, 0xe8e64d8d),
+           TOBN(0xa724cd0d, 0x87ca9b16), TOBN(0x35e4fd59, 0xa5540dfe)}},
+         {{TOBN(0xf8c1ff18, 0xe4bcf6b1), TOBN(0x856d6285, 0x295018fa),
+           TOBN(0x433f665c, 0x3263c949), TOBN(0xa6a76dd6, 0xa1f21409)},
+          {TOBN(0x17d32334, 0xcc7b4f79), TOBN(0xa1d03122, 0x06720e4a),
+           TOBN(0xadb6661d, 0x81d9bed5), TOBN(0xf0d6fb02, 0x11db15d1)}},
+         {{TOBN(0x7fd11ad5, 0x1fb747d2), TOBN(0xab50f959, 0x3033762b),
+           TOBN(0x2a7e711b, 0xfbefaf5a), TOBN(0xc7393278, 0x3fef2bbf)},
+          {TOBN(0xe29fa244, 0x0df6f9be), TOBN(0x9092757b, 0x71efd215),
+           TOBN(0xee60e311, 0x4f3d6fd9), TOBN(0x338542d4, 0x0acfb78b)}},
+         {{TOBN(0x44a23f08, 0x38961a0f), TOBN(0x1426eade, 0x986987ca),
+           TOBN(0x36e6ee2e, 0x4a863cc6), TOBN(0x48059420, 0x628b8b79)},
+          {TOBN(0x30303ad8, 0x7396e1de), TOBN(0x5c8bdc48, 0x38c5aad1),
+           TOBN(0x3e40e11f, 0x5c8f5066), TOBN(0xabd6e768, 0x8d246bbd)}},
+         {{TOBN(0x68aa40bb, 0x23330a01), TOBN(0xd23f5ee4, 0xc34eafa0),
+           TOBN(0x3bbee315, 0x5de02c21), TOBN(0x18dd4397, 0xd1d8dd06)},
+          {TOBN(0x3ba1939a, 0x122d7b44), TOBN(0xe6d3b40a, 0xa33870d6),
+           TOBN(0x8e620f70, 0x1c4fe3f8), TOBN(0xf6bba1a5, 0xd3a50cbf)}},
+         {{TOBN(0x4a78bde5, 0xcfc0aee0), TOBN(0x847edc46, 0xc08c50bd),
+           TOBN(0xbaa2439c, 0xad63c9b2), TOBN(0xceb4a728, 0x10fc2acb)},
+          {TOBN(0xa419e40e, 0x26da033d), TOBN(0x6cc3889d, 0x03e02683),
+           TOBN(0x1cd28559, 0xfdccf725), TOBN(0x0fd7e0f1, 0x8d13d208)}},
+         {{TOBN(0x01b9733b, 0x1f0df9d4), TOBN(0x8cc2c5f3, 0xa2b5e4f3),
+           TOBN(0x43053bfa, 0x3a304fd4), TOBN(0x8e87665c, 0x0a9f1aa7)},
+          {TOBN(0x087f29ec, 0xd73dc965), TOBN(0x15ace455, 0x3e9023db),
+           TOBN(0x2370e309, 0x2bce28b4), TOBN(0xf9723442, 0xb6b1e84a)}},
+         {{TOBN(0xbeee662e, 0xb72d9f26), TOBN(0xb19396de, 0xf0e47109),
+           TOBN(0x85b1fa73, 0xe13289d0), TOBN(0x436cf77e, 0x54e58e32)},
+          {TOBN(0x0ec833b3, 0xe990ef77), TOBN(0x7373e3ed, 0x1b11fc25),
+           TOBN(0xbe0eda87, 0x0fc332ce), TOBN(0xced04970, 0x8d7ea856)}},
+         {{TOBN(0xf85ff785, 0x7e977ca0), TOBN(0xb66ee8da, 0xdfdd5d2b),
+           TOBN(0xf5e37950, 0x905af461), TOBN(0x587b9090, 0x966d487c)},
+          {TOBN(0x6a198a1b, 0x32ba0127), TOBN(0xa7720e07, 0x141615ac),
+           TOBN(0xa23f3499, 0x996ef2f2), TOBN(0xef5f64b4, 0x470bcb3d)}},
+         {{TOBN(0xa526a962, 0x92b8c559), TOBN(0x0c14aac0, 0x69740a0f),
+           TOBN(0x0d41a9e3, 0xa6bdc0a5), TOBN(0x97d52106, 0x9c48aef4)},
+          {TOBN(0xcf16bd30, 0x3e7c253b), TOBN(0xcc834b1a, 0x47fdedc1),
+           TOBN(0x7362c6e5, 0x373aab2e), TOBN(0x264ed85e, 0xc5f590ff)}},
+         {{TOBN(0x7a46d9c0, 0x66d41870), TOBN(0xa50c20b1, 0x4787ba09),
+           TOBN(0x185e7e51, 0xe3d44635), TOBN(0xb3b3e080, 0x31e2d8dc)},
+          {TOBN(0xbed1e558, 0xa179e9d9), TOBN(0x2daa3f79, 0x74a76781),
+           TOBN(0x4372baf2, 0x3a40864f), TOBN(0x46900c54, 0x4fe75cb5)}},
+         {{TOBN(0xb95f171e, 0xf76765d0), TOBN(0x4ad726d2, 0x95c87502),
+           TOBN(0x2ec769da, 0x4d7c99bd), TOBN(0x5e2ddd19, 0xc36cdfa8)},
+          {TOBN(0xc22117fc, 0xa93e6dea), TOBN(0xe8a2583b, 0x93771123),
+           TOBN(0xbe2f6089, 0xfa08a3a2), TOBN(0x4809d5ed, 0x8f0e1112)}},
+         {{TOBN(0x3b414aa3, 0xda7a095e), TOBN(0x9049acf1, 0x26f5aadd),
+           TOBN(0x78d46a4d, 0x6be8b84a), TOBN(0xd66b1963, 0xb732b9b3)},
+          {TOBN(0x5c2ac2a0, 0xde6e9555), TOBN(0xcf52d098, 0xb5bd8770),
+           TOBN(0x15a15fa6, 0x0fd28921), TOBN(0x56ccb81e, 0x8b27536d)}},
+         {{TOBN(0x0f0d8ab8, 0x9f4ccbb8), TOBN(0xed5f44d2, 0xdb221729),
+           TOBN(0x43141988, 0x00bed10c), TOBN(0xc94348a4, 0x1d735b8b)},
+          {TOBN(0x79f3e9c4, 0x29ef8479), TOBN(0x4c13a4e3, 0x614c693f),
+           TOBN(0x32c9af56, 0x8e143a14), TOBN(0xbc517799, 0xe29ac5c4)}},
+         {{TOBN(0x05e17992, 0x2774856f), TOBN(0x6e52fb05, 0x6c1bf55f),
+           TOBN(0xaeda4225, 0xe4f19e16), TOBN(0x70f4728a, 0xaf5ccb26)},
+          {TOBN(0x5d2118d1, 0xb2947f22), TOBN(0xc827ea16, 0x281d6fb9),
+           TOBN(0x8412328d, 0x8cf0eabd), TOBN(0x45ee9fb2, 0x03ef9dcf)}},
+         {{TOBN(0x8e700421, 0xbb937d63), TOBN(0xdf8ff2d5, 0xcc4b37a6),
+           TOBN(0xa4c0d5b2, 0x5ced7b68), TOBN(0x6537c1ef, 0xc7308f59)},
+          {TOBN(0x25ce6a26, 0x3b37f8e8), TOBN(0x170e9a9b, 0xdeebc6ce),
+           TOBN(0xdd037952, 0x8728d72c), TOBN(0x445b0e55, 0x850154bc)}},
+         {{TOBN(0x4b7d0e06, 0x83a7337b), TOBN(0x1e3416d4, 0xffecf249),
+           TOBN(0x24840eff, 0x66a2b71f), TOBN(0xd0d9a50a, 0xb37cc26d)},
+          {TOBN(0xe2198150, 0x6fe28ef7), TOBN(0x3cc5ef16, 0x23324c7f),
+           TOBN(0x220f3455, 0x769b5263), TOBN(0xe2ade2f1, 0xa10bf475)}},
+         {{TOBN(0x28cd20fa, 0x458d3671), TOBN(0x1549722c, 0x2dc4847b),
+           TOBN(0x6dd01e55, 0x591941e3), TOBN(0x0e6fbcea, 0x27128ccb)},
+          {TOBN(0xae1a1e6b, 0x3bef0262), TOBN(0xfa8c472c, 0x8f54e103),
+           TOBN(0x7539c0a8, 0x72c052ec), TOBN(0xd7b27369, 0x5a3490e9)}},
+         {{TOBN(0x143fe1f1, 0x71684349), TOBN(0x36b4722e, 0x32e19b97),
+           TOBN(0xdc059227, 0x90980aff), TOBN(0x175c9c88, 0x9e13d674)},
+          {TOBN(0xa7de5b22, 0x6e6bfdb1), TOBN(0x5ea5b7b2, 0xbedb4b46),
+           TOBN(0xd5570191, 0xd34a6e44), TOBN(0xfcf60d2e, 0xa24ff7e6)}},
+         {{TOBN(0x614a392d, 0x677819e1), TOBN(0x7be74c7e, 0xaa5a29e8),
+           TOBN(0xab50fece, 0x63c85f3f), TOBN(0xaca2e2a9, 0x46cab337)},
+          {TOBN(0x7f700388, 0x122a6fe3), TOBN(0xdb69f703, 0x882a04a8),
+           TOBN(0x9a77935d, 0xcf7aed57), TOBN(0xdf16207c, 0x8d91c86f)}},
+         {{TOBN(0x2fca49ab, 0x63ed9998), TOBN(0xa3125c44, 0xa77ddf96),
+           TOBN(0x05dd8a86, 0x24344072), TOBN(0xa023dda2, 0xfec3fb56)},
+          {TOBN(0x421b41fc, 0x0c743032), TOBN(0x4f2120c1, 0x5e438639),
+           TOBN(0xfb7cae51, 0xc83c1b07), TOBN(0xb2370caa, 0xcac2171a)}},
+         {{TOBN(0x2eb2d962, 0x6cc820fb), TOBN(0x59feee5c, 0xb85a44bf),
+           TOBN(0x94620fca, 0x5b6598f0), TOBN(0x6b922cae, 0x7e314051)},
+          {TOBN(0xff8745ad, 0x106bed4e), TOBN(0x546e71f5, 0xdfa1e9ab),
+           TOBN(0x935c1e48, 0x1ec29487), TOBN(0x9509216c, 0x4d936530)}},
+         {{TOBN(0xc7ca3067, 0x85c9a2db), TOBN(0xd6ae5152, 0x6be8606f),
+           TOBN(0x09dbcae6, 0xe14c651d), TOBN(0xc9536e23, 0x9bc32f96)},
+          {TOBN(0xa90535a9, 0x34521b03), TOBN(0xf39c526c, 0x878756ff),
+           TOBN(0x383172ec, 0x8aedf03c), TOBN(0x20a8075e, 0xefe0c034)}},
+         {{TOBN(0xf22f9c62, 0x64026422), TOBN(0x8dd10780, 0x24b9d076),
+           TOBN(0x944c742a, 0x3bef2950), TOBN(0x55b9502e, 0x88a2b00b)},
+          {TOBN(0xa59e14b4, 0x86a09817), TOBN(0xa39dd3ac, 0x47bb4071),
+           TOBN(0x55137f66, 0x3be0592f), TOBN(0x07fcafd4, 0xc9e63f5b)}},
+         {{TOBN(0x963652ee, 0x346eb226), TOBN(0x7dfab085, 0xec2facb7),
+           TOBN(0x273bf2b8, 0x691add26), TOBN(0x30d74540, 0xf2b46c44)},
+          {TOBN(0x05e8e73e, 0xf2c2d065), TOBN(0xff9b8a00, 0xd42eeac9),
+           TOBN(0x2fcbd205, 0x97209d22), TOBN(0xeb740ffa, 0xde14ea2c)}},
+         {{TOBN(0xc71ff913, 0xa8aef518), TOBN(0x7bfc74bb, 0xfff4cfa2),
+           TOBN(0x1716680c, 0xb6b36048), TOBN(0x121b2cce, 0x9ef79af1)},
+          {TOBN(0xbff3c836, 0xa01eb3d3), TOBN(0x50eb1c6a, 0x5f79077b),
+           TOBN(0xa48c32d6, 0xa004bbcf), TOBN(0x47a59316, 0x7d64f61d)}},
+         {{TOBN(0x6068147f, 0x93102016), TOBN(0x12c5f654, 0x94d12576),
+           TOBN(0xefb071a7, 0xc9bc6b91), TOBN(0x7c2da0c5, 0x6e23ea95)},
+          {TOBN(0xf4fd45b6, 0xd4a1dd5d), TOBN(0x3e7ad9b6, 0x9122b13c),
+           TOBN(0x342ca118, 0xe6f57a48), TOBN(0x1c2e94a7, 0x06f8288f)}},
+         {{TOBN(0x99e68f07, 0x5a97d231), TOBN(0x7c80de97, 0x4d838758),
+           TOBN(0xbce0f5d0, 0x05872727), TOBN(0xbe5d95c2, 0x19c4d016)},
+          {TOBN(0x921d5cb1, 0x9c2492ee), TOBN(0x42192dc1, 0x404d6fb3),
+           TOBN(0x4c84dcd1, 0x32f988d3), TOBN(0xde26d61f, 0xa17b8e85)}},
+         {{TOBN(0xc466dcb6, 0x137c7408), TOBN(0x9a38d7b6, 0x36a266da),
+           TOBN(0x7ef5cb06, 0x83bebf1b), TOBN(0xe5cdcbbf, 0x0fd014e3)},
+          {TOBN(0x30aa376d, 0xf65965a0), TOBN(0x60fe88c2, 0xebb3e95e),
+           TOBN(0x33fd0b61, 0x66ee6f20), TOBN(0x8827dcdb, 0x3f41f0a0)}},
+         {{TOBN(0xbf8a9d24, 0x0c56c690), TOBN(0x40265dad, 0xddb7641d),
+           TOBN(0x522b05bf, 0x3a6b662b), TOBN(0x466d1dfe, 0xb1478c9b)},
+          {TOBN(0xaa616962, 0x1484469b), TOBN(0x0db60549, 0x02df8f9f),
+           TOBN(0xc37bca02, 0x3cb8bf51), TOBN(0x5effe346, 0x21371ce8)}},
+         {{TOBN(0xe8f65264, 0xff112c32), TOBN(0x8a9c736d, 0x7b971fb2),
+           TOBN(0xa4f19470, 0x7b75080d), TOBN(0xfc3f2c5a, 0x8839c59b)},
+          {TOBN(0x1d6c777e, 0x5aeb49c2), TOBN(0xf3db034d, 0xda1addfe),
+           TOBN(0xd76fee5a, 0x5535affc), TOBN(0x0853ac70, 0xb92251fd)}},
+         {{TOBN(0x37e3d594, 0x8b2a29d5), TOBN(0x28f1f457, 0x4de00ddb),
+           TOBN(0x8083c1b5, 0xf42c328b), TOBN(0xd8ef1d8f, 0xe493c73b)},
+          {TOBN(0x96fb6260, 0x41dc61bd), TOBN(0xf74e8a9d, 0x27ee2f8a),
+           TOBN(0x7c605a80, 0x2c946a5d), TOBN(0xeed48d65, 0x3839ccfd)}},
+         {{TOBN(0x9894344f, 0x3a29467a), TOBN(0xde81e949, 0xc51eba6d),
+           TOBN(0xdaea066b, 0xa5e5c2f2), TOBN(0x3fc8a614, 0x08c8c7b3)},
+          {TOBN(0x7adff88f, 0x06d0de9f), TOBN(0xbbc11cf5, 0x3b75ce0a),
+           TOBN(0x9fbb7acc, 0xfbbc87d5), TOBN(0xa1458e26, 0x7badfde2)}}},
+        {{{TOBN(0x1cb43668, 0xe039c256), TOBN(0x5f26fb8b, 0x7c17fd5d),
+           TOBN(0xeee426af, 0x79aa062b), TOBN(0x072002d0, 0xd78fbf04)},
+          {TOBN(0x4c9ca237, 0xe84fb7e3), TOBN(0xb401d8a1, 0x0c82133d),
+           TOBN(0xaaa52592, 0x6d7e4181), TOBN(0xe9430833, 0x73dbb152)}},
+         {{TOBN(0xf92dda31, 0xbe24319a), TOBN(0x03f7d28b, 0xe095a8e7),
+           TOBN(0xa52fe840, 0x98782185), TOBN(0x276ddafe, 0x29c24dbc)},
+          {TOBN(0x80cd5496, 0x1d7a64eb), TOBN(0xe4360889, 0x7f1dbe42),
+           TOBN(0x2f81a877, 0x8438d2d5), TOBN(0x7e4d52a8, 0x85169036)}},
+         {{TOBN(0x19e3d5b1, 0x1d59715d), TOBN(0xc7eaa762, 0xd788983e),
+           TOBN(0xe5a730b0, 0xabf1f248), TOBN(0xfbab8084, 0xfae3fd83)},
+          {TOBN(0x65e50d21, 0x53765b2f), TOBN(0xbdd4e083, 0xfa127f3d),
+           TOBN(0x9cf3c074, 0x397b1b10), TOBN(0x59f8090c, 0xb1b59fd3)}},
+         {{TOBN(0x7b15fd9d, 0x615faa8f), TOBN(0x8fa1eb40, 0x968554ed),
+           TOBN(0x7bb4447e, 0x7aa44882), TOBN(0x2bb2d0d1, 0x029fff32)},
+          {TOBN(0x075e2a64, 0x6caa6d2f), TOBN(0x8eb879de, 0x22e7351b),
+           TOBN(0xbcd5624e, 0x9a506c62), TOBN(0x218eaef0, 0xa87e24dc)}},
+         {{TOBN(0x37e56847, 0x44ddfa35), TOBN(0x9ccfc5c5, 0xdab3f747),
+           TOBN(0x9ac1df3f, 0x1ee96cf4), TOBN(0x0c0571a1, 0x3b480b8f)},
+          {TOBN(0x2fbeb3d5, 0x4b3a7b3c), TOBN(0x35c03669, 0x5dcdbb99),
+           TOBN(0x52a0f5dc, 0xb2415b3a), TOBN(0xd57759b4, 0x4413ed9a)}},
+         {{TOBN(0x1fe647d8, 0x3d30a2c5), TOBN(0x0857f77e, 0xf78a81dc),
+           TOBN(0x11d5a334, 0x131a4a9b), TOBN(0xc0a94af9, 0x29d393f5)},
+          {TOBN(0xbc3a5c0b, 0xdaa6ec1a), TOBN(0xba9fe493, 0x88d2d7ed),
+           TOBN(0xbb4335b4, 0xbb614797), TOBN(0x991c4d68, 0x72f83533)}},
+         {{TOBN(0x53258c28, 0xd2f01cb3), TOBN(0x93d6eaa3, 0xd75db0b1),
+           TOBN(0x419a2b0d, 0xe87d0db4), TOBN(0xa1e48f03, 0xd8fe8493)},
+          {TOBN(0xf747faf6, 0xc508b23a), TOBN(0xf137571a, 0x35d53549),
+           TOBN(0x9f5e58e2, 0xfcf9b838), TOBN(0xc7186cee, 0xa7fd3cf5)}},
+         {{TOBN(0x77b868ce, 0xe978a1d3), TOBN(0xe3a68b33, 0x7ab92d04),
+           TOBN(0x51029794, 0x87a5b862), TOBN(0x5f0606c3, 0x3a61d41d)},
+          {TOBN(0x2814be27, 0x6f9326f1), TOBN(0x2f521c14, 0xc6fe3c2e),
+           TOBN(0x17464d7d, 0xacdf7351), TOBN(0x10f5f9d3, 0x777f7e44)}},
+         {{TOBN(0xce8e616b, 0x269fb37d), TOBN(0xaaf73804, 0x7de62de5),
+           TOBN(0xaba11175, 0x4fdd4153), TOBN(0x515759ba, 0x3770b49b)},
+          {TOBN(0x8b09ebf8, 0xaa423a61), TOBN(0x592245a1, 0xcd41fb92),
+           TOBN(0x1cba8ec1, 0x9b4c8936), TOBN(0xa87e91e3, 0xaf36710e)}},
+         {{TOBN(0x1fd84ce4, 0x3d34a2e3), TOBN(0xee3759ce, 0xb43b5d61),
+           TOBN(0x895bc78c, 0x619186c7), TOBN(0xf19c3809, 0xcbb9725a)},
+          {TOBN(0xc0be21aa, 0xde744b1f), TOBN(0xa7d222b0, 0x60f8056b),
+           TOBN(0x74be6157, 0xb23efe11), TOBN(0x6fab2b4f, 0x0cd68253)}},
+         {{TOBN(0xad33ea5f, 0x4bf1d725), TOBN(0x9c1d8ee2, 0x4f6c950f),
+           TOBN(0x544ee78a, 0xa377af06), TOBN(0x54f489bb, 0x94a113e1)},
+          {TOBN(0x8f11d634, 0x992fb7e8), TOBN(0x0169a7aa, 0xa2a44347),
+           TOBN(0x1d49d4af, 0x95020e00), TOBN(0x95945722, 0xe08e120b)}},
+         {{TOBN(0xb6e33878, 0xa4d32282), TOBN(0xe36e029d, 0x48020ae7),
+           TOBN(0xe05847fb, 0x37a9b750), TOBN(0xf876812c, 0xb29e3819)},
+          {TOBN(0x84ad138e, 0xd23a17f0), TOBN(0x6d7b4480, 0xf0b3950e),
+           TOBN(0xdfa8aef4, 0x2fd67ae0), TOBN(0x8d3eea24, 0x52333af6)}},
+         {{TOBN(0x0d052075, 0xb15d5acc), TOBN(0xc6d9c79f, 0xbd815bc4),
+           TOBN(0x8dcafd88, 0xdfa36cf2), TOBN(0x908ccbe2, 0x38aa9070)},
+          {TOBN(0x638722c4, 0xba35afce), TOBN(0x5a3da8b0, 0xfd6abf0b),
+           TOBN(0x2dce252c, 0xc9c335c1), TOBN(0x84e7f0de, 0x65aa799b)}},
+         {{TOBN(0x2101a522, 0xb99a72cb), TOBN(0x06de6e67, 0x87618016),
+           TOBN(0x5ff8c7cd, 0xe6f3653e), TOBN(0x0a821ab5, 0xc7a6754a)},
+          {TOBN(0x7e3fa52b, 0x7cb0b5a2), TOBN(0xa7fb121c, 0xc9048790),
+           TOBN(0x1a725020, 0x06ce053a), TOBN(0xb490a31f, 0x04e929b0)}},
+         {{TOBN(0xe17be47d, 0x62dd61ad), TOBN(0x781a961c, 0x6be01371),
+           TOBN(0x1063bfd3, 0xdae3cbba), TOBN(0x35647406, 0x7f73c9ba)},
+          {TOBN(0xf50e957b, 0x2736a129), TOBN(0xa6313702, 0xed13f256),
+           TOBN(0x9436ee65, 0x3a19fcc5), TOBN(0xcf2bdb29, 0xe7a4c8b6)}},
+         {{TOBN(0xb06b1244, 0xc5f95cd8), TOBN(0xda8c8af0, 0xf4ab95f4),
+           TOBN(0x1bae59c2, 0xb9e5836d), TOBN(0x07d51e7e, 0x3acffffc)},
+          {TOBN(0x01e15e6a, 0xc2ccbcda), TOBN(0x3bc1923f, 0x8528c3e0),
+           TOBN(0x43324577, 0xa49fead4), TOBN(0x61a1b884, 0x2aa7a711)}},
+         {{TOBN(0xf9a86e08, 0x700230ef), TOBN(0x0af585a1, 0xbd19adf8),
+           TOBN(0x7645f361, 0xf55ad8f2), TOBN(0x6e676223, 0x46c3614c)},
+          {TOBN(0x23cb257c, 0x4e774d3f), TOBN(0x82a38513, 0xac102d1b),
+           TOBN(0x9bcddd88, 0x7b126aa5), TOBN(0xe716998b, 0xeefd3ee4)}},
+         {{TOBN(0x4239d571, 0xfb167583), TOBN(0xdd011c78, 0xd16c8f8a),
+           TOBN(0x271c2895, 0x69a27519), TOBN(0x9ce0a3b7, 0xd2d64b6a)},
+          {TOBN(0x8c977289, 0xd5ec6738), TOBN(0xa3b49f9a, 0x8840ef6b),
+           TOBN(0x808c14c9, 0x9a453419), TOBN(0x5c00295b, 0x0cf0a2d5)}},
+         {{TOBN(0x524414fb, 0x1d4bcc76), TOBN(0xb07691d2, 0x459a88f1),
+           TOBN(0x77f43263, 0xf70d110f), TOBN(0x64ada5e0, 0xb7abf9f3)},
+          {TOBN(0xafd0f94e, 0x5b544cf5), TOBN(0xb4a13a15, 0xfd2713fe),
+           TOBN(0xb99b7d6e, 0x250c74f4), TOBN(0x097f2f73, 0x20324e45)}},
+         {{TOBN(0x994b37d8, 0xaffa8208), TOBN(0xc3c31b0b, 0xdc29aafc),
+           TOBN(0x3da74651, 0x7a3a607f), TOBN(0xd8e1b8c1, 0xfe6955d6)},
+          {TOBN(0x716e1815, 0xc8418682), TOBN(0x541d487f, 0x7dc91d97),
+           TOBN(0x48a04669, 0xc6996982), TOBN(0xf39cab15, 0x83a6502e)}},
+         {{TOBN(0x025801a0, 0xe68db055), TOBN(0xf3569758, 0xba3338d5),
+           TOBN(0xb0c8c0aa, 0xee2afa84), TOBN(0x4f6985d3, 0xfb6562d1)},
+          {TOBN(0x351f1f15, 0x132ed17a), TOBN(0x510ed0b4, 0xc04365fe),
+           TOBN(0xa3f98138, 0xe5b1f066), TOBN(0xbc9d95d6, 0x32df03dc)}},
+         {{TOBN(0xa83ccf6e, 0x19abd09e), TOBN(0x0b4097c1, 0x4ff17edb),
+           TOBN(0x58a5c478, 0xd64a06ce), TOBN(0x2ddcc3fd, 0x544a58fd)},
+          {TOBN(0xd449503d, 0x9e8153b8), TOBN(0x3324fd02, 0x7774179b),
+           TOBN(0xaf5d47c8, 0xdbd9120c), TOBN(0xeb860162, 0x34fa94db)}},
+         {{TOBN(0x5817bdd1, 0x972f07f4), TOBN(0xe5579e2e, 0xd27bbceb),
+           TOBN(0x86847a1f, 0x5f11e5a6), TOBN(0xb39ed255, 0x7c3cf048)},
+          {TOBN(0xe1076417, 0xa2f62e55), TOBN(0x6b9ab38f, 0x1bcf82a2),
+           TOBN(0x4bb7c319, 0x7aeb29f9), TOBN(0xf6d17da3, 0x17227a46)}},
+         {{TOBN(0xab53ddbd, 0x0f968c00), TOBN(0xa03da7ec, 0x000c880b),
+           TOBN(0x7b239624, 0x6a9ad24d), TOBN(0x612c0401, 0x01ec60d0)},
+          {TOBN(0x70d10493, 0x109f5df1), TOBN(0xfbda4030, 0x80af7550),
+           TOBN(0x30b93f95, 0xc6b9a9b3), TOBN(0x0c74ec71, 0x007d9418)}},
+         {{TOBN(0x94175564, 0x6edb951f), TOBN(0x5f4a9d78, 0x7f22c282),
+           TOBN(0xb7870895, 0xb38d1196), TOBN(0xbc593df3, 0xa228ce7c)},
+          {TOBN(0xc78c5bd4, 0x6af3641a), TOBN(0x7802200b, 0x3d9b3dcc),
+           TOBN(0x0dc73f32, 0x8be33304), TOBN(0x847ed87d, 0x61ffb79a)}},
+         {{TOBN(0xf85c974e, 0x6d671192), TOBN(0x1e14100a, 0xde16f60f),
+           TOBN(0x45cb0d5a, 0x95c38797), TOBN(0x18923bba, 0x9b022da4)},
+          {TOBN(0xef2be899, 0xbbe7e86e), TOBN(0x4a1510ee, 0x216067bf),
+           TOBN(0xd98c8154, 0x84d5ce3e), TOBN(0x1af777f0, 0xf92a2b90)}},
+         {{TOBN(0x9fbcb400, 0x4ef65724), TOBN(0x3e04a4c9, 0x3c0ca6fe),
+           TOBN(0xfb3e2cb5, 0x55002994), TOBN(0x1f3a93c5, 0x5363ecab)},
+          {TOBN(0x1fe00efe, 0x3923555b), TOBN(0x744bedd9, 0x1e1751ea),
+           TOBN(0x3fb2db59, 0x6ab69357), TOBN(0x8dbd7365, 0xf5e6618b)}},
+         {{TOBN(0x99d53099, 0xdf1ea40e), TOBN(0xb3f24a0b, 0x57d61e64),
+           TOBN(0xd088a198, 0x596eb812), TOBN(0x22c8361b, 0x5762940b)},
+          {TOBN(0x66f01f97, 0xf9c0d95c), TOBN(0x88461172, 0x8e43cdae),
+           TOBN(0x11599a7f, 0xb72b15c3), TOBN(0x135a7536, 0x420d95cc)}},
+         {{TOBN(0x2dcdf0f7, 0x5f7ae2f6), TOBN(0x15fc6e1d, 0xd7fa6da2),
+           TOBN(0x81ca829a, 0xd1d441b6), TOBN(0x84c10cf8, 0x04a106b6)},
+          {TOBN(0xa9b26c95, 0xa73fbbd0), TOBN(0x7f24e0cb, 0x4d8f6ee8),
+           TOBN(0x48b45937, 0x1e25a043), TOBN(0xf8a74fca, 0x036f3dfe)}},
+         {{TOBN(0x1ed46585, 0xc9f84296), TOBN(0x7fbaa8fb, 0x3bc278b0),
+           TOBN(0xa8e96cd4, 0x6c4fcbd0), TOBN(0x940a1202, 0x73b60a5f)},
+          {TOBN(0x34aae120, 0x55a4aec8), TOBN(0x550e9a74, 0xdbd742f0),
+           TOBN(0x794456d7, 0x228c68ab), TOBN(0x492f8868, 0xa4e25ec6)}},
+         {{TOBN(0x682915ad, 0xb2d8f398), TOBN(0xf13b51cc, 0x5b84c953),
+           TOBN(0xcda90ab8, 0x5bb917d6), TOBN(0x4b615560, 0x4ea3dee1)},
+          {TOBN(0x578b4e85, 0x0a52c1c8), TOBN(0xeab1a695, 0x20b75fc4),
+           TOBN(0x60c14f3c, 0xaa0bb3c6), TOBN(0x220f448a, 0xb8216094)}},
+         {{TOBN(0x4fe7ee31, 0xb0e63d34), TOBN(0xf4600572, 0xa9e54fab),
+           TOBN(0xc0493334, 0xd5e7b5a4), TOBN(0x8589fb92, 0x06d54831)},
+          {TOBN(0xaa70f5cc, 0x6583553a), TOBN(0x0879094a, 0xe25649e5),
+           TOBN(0xcc904507, 0x10044652), TOBN(0xebb0696d, 0x02541c4f)}},
+         {{TOBN(0x5a171fde, 0xb9718710), TOBN(0x38f1bed8, 0xf374a9f5),
+           TOBN(0xc8c582e1, 0xba39bdc1), TOBN(0xfc457b0a, 0x908cc0ce)},
+          {TOBN(0x9a187fd4, 0x883841e2), TOBN(0x8ec25b39, 0x38725381),
+           TOBN(0x2553ed05, 0x96f84395), TOBN(0x095c7661, 0x6f6c6897)}},
+         {{TOBN(0x917ac85c, 0x4bdc5610), TOBN(0xb2885fe4, 0x179eb301),
+           TOBN(0x5fc65547, 0x8b78bdcc), TOBN(0x4a9fc893, 0xe59e4699)},
+          {TOBN(0xbb7ff0cd, 0x3ce299af), TOBN(0x195be9b3, 0xadf38b20),
+           TOBN(0x6a929c87, 0xd38ddb8f), TOBN(0x55fcc99c, 0xb21a51b9)}},
+         {{TOBN(0x2b695b4c, 0x721a4593), TOBN(0xed1e9a15, 0x768eaac2),
+           TOBN(0xfb63d71c, 0x7489f914), TOBN(0xf98ba31c, 0x78118910)},
+          {TOBN(0x80291373, 0x9b128eb4), TOBN(0x7801214e, 0xd448af4a),
+           TOBN(0xdbd2e22b, 0x55418dd3), TOBN(0xeffb3c0d, 0xd3998242)}},
+         {{TOBN(0xdfa6077c, 0xc7bf3827), TOBN(0xf2165bcb, 0x47f8238f),
+           TOBN(0xfe37cf68, 0x8564d554), TOBN(0xe5f825c4, 0x0a81fb98)},
+          {TOBN(0x43cc4f67, 0xffed4d6f), TOBN(0xbc609578, 0xb50a34b0),
+           TOBN(0x8aa8fcf9, 0x5041faf1), TOBN(0x5659f053, 0x651773b6)}},
+         {{TOBN(0xe87582c3, 0x6044d63b), TOBN(0xa6089409, 0x0cdb0ca0),
+           TOBN(0x8c993e0f, 0xbfb2bcf6), TOBN(0xfc64a719, 0x45985cfc)},
+          {TOBN(0x15c4da80, 0x83dbedba), TOBN(0x804ae112, 0x2be67df7),
+           TOBN(0xda4c9658, 0xa23defde), TOBN(0x12002ddd, 0x5156e0d3)}},
+         {{TOBN(0xe68eae89, 0x5dd21b96), TOBN(0x8b99f28b, 0xcf44624d),
+           TOBN(0x0ae00808, 0x1ec8897a), TOBN(0xdd0a9303, 0x6712f76e)},
+          {TOBN(0x96237522, 0x4e233de4), TOBN(0x192445b1, 0x2b36a8a5),
+           TOBN(0xabf9ff74, 0x023993d9), TOBN(0x21f37bf4, 0x2aad4a8f)}},
+         {{TOBN(0x340a4349, 0xf8bd2bbd), TOBN(0x1d902cd9, 0x4868195d),
+           TOBN(0x3d27bbf1, 0xe5fdb6f1), TOBN(0x7a5ab088, 0x124f9f1c)},
+          {TOBN(0xc466ab06, 0xf7a09e03), TOBN(0x2f8a1977, 0x31f2c123),
+           TOBN(0xda355dc7, 0x041b6657), TOBN(0xcb840d12, 0x8ece2a7c)}},
+         {{TOBN(0xb600ad9f, 0x7db32675), TOBN(0x78fea133, 0x07a06f1b),
+           TOBN(0x5d032269, 0xb31f6094), TOBN(0x07753ef5, 0x83ec37aa)},
+          {TOBN(0x03485aed, 0x9c0bea78), TOBN(0x41bb3989, 0xbc3f4524),
+           TOBN(0x09403761, 0x697f726d), TOBN(0x6109beb3, 0xdf394820)}},
+         {{TOBN(0x804111ea, 0x3b6d1145), TOBN(0xb6271ea9, 0xa8582654),
+           TOBN(0x619615e6, 0x24e66562), TOBN(0xa2554945, 0xd7b6ad9c)},
+          {TOBN(0xd9c4985e, 0x99bfe35f), TOBN(0x9770ccc0, 0x7b51cdf6),
+           TOBN(0x7c327013, 0x92881832), TOBN(0x8777d45f, 0x286b26d1)}},
+         {{TOBN(0x9bbeda22, 0xd847999d), TOBN(0x03aa33b6, 0xc3525d32),
+           TOBN(0x4b7b96d4, 0x28a959a1), TOBN(0xbb3786e5, 0x31e5d234)},
+          {TOBN(0xaeb5d3ce, 0x6961f247), TOBN(0x20aa85af, 0x02f93d3f),
+           TOBN(0x9cd1ad3d, 0xd7a7ae4f), TOBN(0xbf6688f0, 0x781adaa8)}},
+         {{TOBN(0xb1b40e86, 0x7469cead), TOBN(0x1904c524, 0x309fca48),
+           TOBN(0x9b7312af, 0x4b54bbc7), TOBN(0xbe24bf8f, 0x593affa2)},
+          {TOBN(0xbe5e0790, 0xbd98764b), TOBN(0xa0f45f17, 0xa26e299e),
+           TOBN(0x4af0d2c2, 0x6b8fe4c7), TOBN(0xef170db1, 0x8ae8a3e6)}},
+         {{TOBN(0x0e8d61a0, 0x29e0ccc1), TOBN(0xcd53e87e, 0x60ad36ca),
+           TOBN(0x328c6623, 0xc8173822), TOBN(0x7ee1767d, 0xa496be55)},
+          {TOBN(0x89f13259, 0x648945af), TOBN(0x9e45a5fd, 0x25c8009c),
+           TOBN(0xaf2febd9, 0x1f61ab8c), TOBN(0x43f6bc86, 0x8a275385)}},
+         {{TOBN(0x87792348, 0xf2142e79), TOBN(0x17d89259, 0xc6e6238a),
+           TOBN(0x7536d2f6, 0x4a839d9b), TOBN(0x1f428fce, 0x76a1fbdc)},
+          {TOBN(0x1c109601, 0x0db06dfe), TOBN(0xbfc16bc1, 0x50a3a3cc),
+           TOBN(0xf9cbd9ec, 0x9b30f41b), TOBN(0x5b5da0d6, 0x00138cce)}},
+         {{TOBN(0xec1d0a48, 0x56ef96a7), TOBN(0xb47eb848, 0x982bf842),
+           TOBN(0x66deae32, 0xec3f700d), TOBN(0x4e43c42c, 0xaa1181e0)},
+          {TOBN(0xa1d72a31, 0xd1a4aa2a), TOBN(0x440d4668, 0xc004f3ce),
+           TOBN(0x0d6a2d3b, 0x45fe8a7a), TOBN(0x820e52e2, 0xfb128365)}},
+         {{TOBN(0x29ac5fcf, 0x25e51b09), TOBN(0x180cd2bf, 0x2023d159),
+           TOBN(0xa9892171, 0xa1ebf90e), TOBN(0xf97c4c87, 0x7c132181)},
+          {TOBN(0x9f1dc724, 0xc03dbb7e), TOBN(0xae043765, 0x018cbbe4),
+           TOBN(0xfb0b2a36, 0x0767d153), TOBN(0xa8e2f4d6, 0x249cbaeb)}},
+         {{TOBN(0x172a5247, 0xd95ea168), TOBN(0x1758fada, 0x2970764a),
+           TOBN(0xac803a51, 0x1d978169), TOBN(0x299cfe2e, 0xde77e01b)},
+          {TOBN(0x652a1e17, 0xb0a98927), TOBN(0x2e26e1d1, 0x20014495),
+           TOBN(0x7ae0af9f, 0x7175b56a), TOBN(0xc2e22a80, 0xd64b9f95)}},
+         {{TOBN(0x4d0ff9fb, 0xd90a060a), TOBN(0x496a27db, 0xbaf38085),
+           TOBN(0x32305401, 0xda776bcf), TOBN(0xb8cdcef6, 0x725f209e)},
+          {TOBN(0x61ba0f37, 0x436a0bba), TOBN(0x263fa108, 0x76860049),
+           TOBN(0x92beb98e, 0xda3542cf), TOBN(0xa2d4d14a, 0xd5849538)}},
+         {{TOBN(0x989b9d68, 0x12e9a1bc), TOBN(0x61d9075c, 0x5f6e3268),
+           TOBN(0x352c6aa9, 0x99ace638), TOBN(0xde4e4a55, 0x920f43ff)},
+          {TOBN(0xe5e4144a, 0xd673c017), TOBN(0x667417ae, 0x6f6e05ea),
+           TOBN(0x613416ae, 0xdcd1bd56), TOBN(0x5eb36201, 0x86693711)}},
+         {{TOBN(0x2d7bc504, 0x3a1aa914), TOBN(0x175a1299, 0x76dc5975),
+           TOBN(0xe900e0f2, 0x3fc8125c), TOBN(0x569ef68c, 0x11198875)},
+          {TOBN(0x9012db63, 0x63a113b4), TOBN(0xe3bd3f56, 0x98835766),
+           TOBN(0xa5c94a52, 0x76412dea), TOBN(0xad9e2a09, 0xaa735e5c)}},
+         {{TOBN(0x405a984c, 0x508b65e9), TOBN(0xbde4a1d1, 0x6df1a0d1),
+           TOBN(0x1a9433a1, 0xdfba80da), TOBN(0xe9192ff9, 0x9440ad2e)},
+          {TOBN(0x9f649696, 0x5099fe92), TOBN(0x25ddb65c, 0x0b27a54a),
+           TOBN(0x178279dd, 0xc590da61), TOBN(0x5479a999, 0xfbde681a)}},
+         {{TOBN(0xd0e84e05, 0x013fe162), TOBN(0xbe11dc92, 0x632d471b),
+           TOBN(0xdf0b0c45, 0xfc0e089f), TOBN(0x04fb15b0, 0x4c144025)},
+          {TOBN(0xa61d5fc2, 0x13c99927), TOBN(0xa033e9e0, 0x3de2eb35),
+           TOBN(0xf8185d5c, 0xb8dacbb4), TOBN(0x9a88e265, 0x8644549d)}},
+         {{TOBN(0xf717af62, 0x54671ff6), TOBN(0x4bd4241b, 0x5fa58603),
+           TOBN(0x06fba40b, 0xe67773c0), TOBN(0xc1d933d2, 0x6a2847e9)},
+          {TOBN(0xf4f5acf3, 0x689e2c70), TOBN(0x92aab0e7, 0x46bafd31),
+           TOBN(0x798d76aa, 0x3473f6e5), TOBN(0xcc6641db, 0x93141934)}},
+         {{TOBN(0xcae27757, 0xd31e535e), TOBN(0x04cc43b6, 0x87c2ee11),
+           TOBN(0x8d1f9675, 0x2e029ffa), TOBN(0xc2150672, 0xe4cc7a2c)},
+          {TOBN(0x3b03c1e0, 0x8d68b013), TOBN(0xa9d6816f, 0xedf298f3),
+           TOBN(0x1bfbb529, 0xa2804464), TOBN(0x95a52fae, 0x5db22125)}},
+         {{TOBN(0x55b32160, 0x0e1cb64e), TOBN(0x004828f6, 0x7e7fc9fe),
+           TOBN(0x13394b82, 0x1bb0fb93), TOBN(0xb6293a2d, 0x35f1a920)},
+          {TOBN(0xde35ef21, 0xd145d2d9), TOBN(0xbe6225b3, 0xbb8fa603),
+           TOBN(0x00fc8f6b, 0x32cf252d), TOBN(0xa28e52e6, 0x117cf8c2)}},
+         {{TOBN(0x9d1dc89b, 0x4c371e6d), TOBN(0xcebe0675, 0x36ef0f28),
+           TOBN(0x5de05d09, 0xa4292f81), TOBN(0xa8303593, 0x353e3083)},
+          {TOBN(0xa1715b0a, 0x7e37a9bb), TOBN(0x8c56f61e, 0x2b8faec3),
+           TOBN(0x52507431, 0x33c9b102), TOBN(0x0130cefc, 0xa44431f0)}},
+         {{TOBN(0x56039fa0, 0xbd865cfb), TOBN(0x4b03e578, 0xbc5f1dd7),
+           TOBN(0x40edf2e4, 0xbabe7224), TOBN(0xc752496d, 0x3a1988f6)},
+          {TOBN(0xd1572d3b, 0x564beb6b), TOBN(0x0db1d110, 0x39a1c608),
+           TOBN(0x568d1934, 0x16f60126), TOBN(0x05ae9668, 0xf354af33)}},
+         {{TOBN(0x19de6d37, 0xc92544f2), TOBN(0xcc084353, 0xa35837d5),
+           TOBN(0xcbb6869c, 0x1a514ece), TOBN(0xb633e728, 0x2e1d1066)},
+          {TOBN(0xf15dd69f, 0x936c581c), TOBN(0x96e7b8ce, 0x7439c4f9),
+           TOBN(0x5e676f48, 0x2e448a5b), TOBN(0xb2ca7d5b, 0xfd916bbb)}},
+         {{TOBN(0xd55a2541, 0xf5024025), TOBN(0x47bc5769, 0xe4c2d937),
+           TOBN(0x7d31b92a, 0x0362189f), TOBN(0x83f3086e, 0xef7816f9)},
+          {TOBN(0xf9f46d94, 0xb587579a), TOBN(0xec2d22d8, 0x30e76c5f),
+           TOBN(0x27d57461, 0xb000ffcf), TOBN(0xbb7e65f9, 0x364ffc2c)}},
+         {{TOBN(0x7c7c9477, 0x6652a220), TOBN(0x61618f89, 0xd696c981),
+           TOBN(0x5021701d, 0x89effff3), TOBN(0xf2c8ff8e, 0x7c314163)},
+          {TOBN(0x2da413ad, 0x8efb4d3e), TOBN(0x937b5adf, 0xce176d95),
+           TOBN(0x22867d34, 0x2a67d51c), TOBN(0x262b9b10, 0x18eb3ac9)}},
+         {{TOBN(0x4e314fe4, 0xc43ff28b), TOBN(0x76476627, 0x6a664e7a),
+           TOBN(0x3e90e40b, 0xb7a565c2), TOBN(0x8588993a, 0xc1acf831)},
+          {TOBN(0xd7b501d6, 0x8f938829), TOBN(0x996627ee, 0x3edd7d4c),
+           TOBN(0x37d44a62, 0x90cd34c7), TOBN(0xa8327499, 0xf3833e8d)}},
+         {{TOBN(0x2e18917d, 0x4bf50353), TOBN(0x85dd726b, 0x556765fb),
+           TOBN(0x54fe65d6, 0x93d5ab66), TOBN(0x3ddbaced, 0x915c25fe)},
+          {TOBN(0xa799d9a4, 0x12f22e85), TOBN(0xe2a24867, 0x6d06f6bc),
+           TOBN(0xf4f1ee56, 0x43ca1637), TOBN(0xfda2828b, 0x61ece30a)}},
+         {{TOBN(0x758c1a3e, 0xa2dee7a6), TOBN(0xdcde2f3c, 0x734b2284),
+           TOBN(0xaba445d2, 0x4eaba6ad), TOBN(0x35aaf668, 0x76cee0a7)},
+          {TOBN(0x7e0b04a9, 0xe5aa049a), TOBN(0xe74083ad, 0x91103e84),
+           TOBN(0xbeb183ce, 0x40afecc3), TOBN(0x6b89de9f, 0xea043f7a)}}},
+        {{{TOBN(0x0e299d23, 0xfe67ba66), TOBN(0x91450760, 0x93cf2f34),
+           TOBN(0xf45b5ea9, 0x97fcf913), TOBN(0x5be00843, 0x8bd7ddda)},
+          {TOBN(0x358c3e05, 0xd53ff04d), TOBN(0xbf7ccdc3, 0x5de91ef7),
+           TOBN(0xad684dbf, 0xb69ec1a0), TOBN(0x367e7cf2, 0x801fd997)}},
+         {{TOBN(0x0ca1f3b7, 0xb0dc8595), TOBN(0x27de4608, 0x9f1d9f2e),
+           TOBN(0x1af3bf39, 0xbadd82a7), TOBN(0x79356a79, 0x65862448)},
+          {TOBN(0xc0602345, 0xf5f9a052), TOBN(0x1a8b0f89, 0x139a42f9),
+           TOBN(0xb53eee42, 0x844d40fc), TOBN(0x93b0bfe5, 0x4e5b6368)}},
+         {{TOBN(0x5434dd02, 0xc024789c), TOBN(0x90dca9ea, 0x41b57bfc),
+           TOBN(0x8aa898e2, 0x243398df), TOBN(0xf607c834, 0x894a94bb)},
+          {TOBN(0xbb07be97, 0xc2c99b76), TOBN(0x6576ba67, 0x18c29302),
+           TOBN(0x3d79efcc, 0xe703a88c), TOBN(0xf259ced7, 0xb6a0d106)}},
+         {{TOBN(0x0f893a5d, 0xc8de610b), TOBN(0xe8c515fb, 0x67e223ce),
+           TOBN(0x7774bfa6, 0x4ead6dc5), TOBN(0x89d20f95, 0x925c728f)},
+          {TOBN(0x7a1e0966, 0x098583ce), TOBN(0xa2eedb94, 0x93f2a7d7),
+           TOBN(0x1b282097, 0x4c304d4a), TOBN(0x0842e3da, 0xc077282d)}},
+         {{TOBN(0xe4d972a3, 0x3b9e2d7b), TOBN(0x7cc60b27, 0xc48218ff),
+           TOBN(0x8fc70838, 0x84149d91), TOBN(0x5c04346f, 0x2f461ecc)},
+          {TOBN(0xebe9fdf2, 0x614650a9), TOBN(0x5e35b537, 0xc1f666ac),
+           TOBN(0x645613d1, 0x88babc83), TOBN(0x88cace3a, 0xc5e1c93e)}},
+         {{TOBN(0x209ca375, 0x3de92e23), TOBN(0xccb03cc8, 0x5fbbb6e3),
+           TOBN(0xccb90f03, 0xd7b1487e), TOBN(0xfa9c2a38, 0xc710941f)},
+          {TOBN(0x756c3823, 0x6724ceed), TOBN(0x3a902258, 0x192d0323),
+           TOBN(0xb150e519, 0xea5e038e), TOBN(0xdcba2865, 0xc7427591)}},
+         {{TOBN(0xe549237f, 0x78890732), TOBN(0xc443bef9, 0x53fcb4d9),
+           TOBN(0x9884d8a6, 0xeb3480d6), TOBN(0x8a35b6a1, 0x3048b186)},
+          {TOBN(0xb4e44716, 0x65e9a90a), TOBN(0x45bf380d, 0x653006c0),
+           TOBN(0x8f3f820d, 0x4fe9ae3b), TOBN(0x244a35a0, 0x979a3b71)}},
+         {{TOBN(0xa1010e9d, 0x74cd06ff), TOBN(0x9c17c7df, 0xaca3eeac),
+           TOBN(0x74c86cd3, 0x8063aa2b), TOBN(0x8595c4b3, 0x734614ff)},
+          {TOBN(0xa3de00ca, 0x990f62cc), TOBN(0xd9bed213, 0xca0c3be5),
+           TOBN(0x7886078a, 0xdf8ce9f5), TOBN(0xddb27ce3, 0x5cd44444)}},
+         {{TOBN(0xed374a66, 0x58926ddd), TOBN(0x138b2d49, 0x908015b8),
+           TOBN(0x886c6579, 0xde1f7ab8), TOBN(0x888b9aa0, 0xc3020b7a)},
+          {TOBN(0xd3ec034e, 0x3a96e355), TOBN(0xba65b0b8, 0xf30fbe9a),
+           TOBN(0x064c8e50, 0xff21367a), TOBN(0x1f508ea4, 0x0b04b46e)}},
+         {{TOBN(0x98561a49, 0x747c866c), TOBN(0xbbb1e5fe, 0x0518a062),
+           TOBN(0x20ff4e8b, 0xecdc3608), TOBN(0x7f55cded, 0x20184027)},
+          {TOBN(0x8d73ec95, 0xf38c85f0), TOBN(0x5b589fdf, 0x8bc3b8c3),
+           TOBN(0xbe95dd98, 0x0f12b66f), TOBN(0xf5bd1a09, 0x0e338e01)}},
+         {{TOBN(0x65163ae5, 0x5e915918), TOBN(0x6158d6d9, 0x86f8a46b),
+           TOBN(0x8466b538, 0xeeebf99c), TOBN(0xca8761f6, 0xbca477ef)},
+          {TOBN(0xaf3449c2, 0x9ebbc601), TOBN(0xef3b0f41, 0xe0c3ae2f),
+           TOBN(0xaa6c577d, 0x5de63752), TOBN(0xe9166601, 0x64682a51)}},
+         {{TOBN(0x5a3097be, 0xfc15aa1e), TOBN(0x40d12548, 0xb54b0745),
+           TOBN(0x5bad4706, 0x519a5f12), TOBN(0xed03f717, 0xa439dee6)},
+          {TOBN(0x0794bb6c, 0x4a02c499), TOBN(0xf725083d, 0xcffe71d2),
+           TOBN(0x2cad7519, 0x0f3adcaf), TOBN(0x7f68ea1c, 0x43729310)}},
+         {{TOBN(0xe747c8c7, 0xb7ffd977), TOBN(0xec104c35, 0x80761a22),
+           TOBN(0x8395ebaf, 0x5a3ffb83), TOBN(0xfb3261f4, 0xe4b63db7)},
+          {TOBN(0x53544960, 0xd883e544), TOBN(0x13520d70, 0x8cc2eeb8),
+           TOBN(0x08f6337b, 0xd3d65f99), TOBN(0x83997db2, 0x781cf95b)}},
+         {{TOBN(0xce6ff106, 0x0dbd2c01), TOBN(0x4f8eea6b, 0x1f9ce934),
+           TOBN(0x546f7c4b, 0x0e993921), TOBN(0x6236a324, 0x5e753fc7)},
+          {TOBN(0x65a41f84, 0xa16022e9), TOBN(0x0c18d878, 0x43d1dbb2),
+           TOBN(0x73c55640, 0x2d4cef9c), TOBN(0xa0428108, 0x70444c74)}},
+         {{TOBN(0x68e4f15e, 0x9afdfb3c), TOBN(0x49a56143, 0x5bdfb6df),
+           TOBN(0xa9bc1bd4, 0x5f823d97), TOBN(0xbceb5970, 0xea111c2a)},
+          {TOBN(0x366b455f, 0xb269bbc4), TOBN(0x7cd85e1e, 0xe9bc5d62),
+           TOBN(0xc743c41c, 0x4f18b086), TOBN(0xa4b40990, 0x95294fb9)}},
+         {{TOBN(0x9c7c581d, 0x26ee8382), TOBN(0xcf17dcc5, 0x359d638e),
+           TOBN(0xee8273ab, 0xb728ae3d), TOBN(0x1d112926, 0xf821f047)},
+          {TOBN(0x11498477, 0x50491a74), TOBN(0x687fa761, 0xfde0dfb9),
+           TOBN(0x2c258022, 0x7ea435ab), TOBN(0x6b8bdb94, 0x91ce7e3f)}},
+         {{TOBN(0x4c5b5dc9, 0x3bf834aa), TOBN(0x04371819, 0x4f6c7e4b),
+           TOBN(0xc284e00a, 0x3736bcad), TOBN(0x0d881118, 0x21ae8f8d)},
+          {TOBN(0xf9cf0f82, 0xf48c8e33), TOBN(0xa11fd075, 0xa1bf40db),
+           TOBN(0xdceab0de, 0xdc2733e5), TOBN(0xc560a8b5, 0x8e986bd7)}},
+         {{TOBN(0x48dd1fe2, 0x3929d097), TOBN(0x3885b290, 0x92f188f1),
+           TOBN(0x0f2ae613, 0xda6fcdac), TOBN(0x9054303e, 0xb662a46c)},
+          {TOBN(0xb6871e44, 0x0738042a), TOBN(0x98e6a977, 0xbdaf6449),
+           TOBN(0xd8bc0650, 0xd1c9df1b), TOBN(0xef3d6451, 0x36e098f9)}},
+         {{TOBN(0x03fbae82, 0xb6d72d28), TOBN(0x77ca9db1, 0xf5d84080),
+           TOBN(0x8a112cff, 0xa58efc1c), TOBN(0x518d761c, 0xc564cb4a)},
+          {TOBN(0x69b5740e, 0xf0d1b5ce), TOBN(0x717039cc, 0xe9eb1785),
+           TOBN(0x3fe29f90, 0x22f53382), TOBN(0x8e54ba56, 0x6bc7c95c)}},
+         {{TOBN(0x9c806d8a, 0xf7f91d0f), TOBN(0x3b61b0f1, 0xa82a5728),
+           TOBN(0x4640032d, 0x94d76754), TOBN(0x273eb5de, 0x47d834c6)},
+          {TOBN(0x2988abf7, 0x7b4e4d53), TOBN(0xb7ce66bf, 0xde401777),
+           TOBN(0x9fba6b32, 0x715071b3), TOBN(0x82413c24, 0xad3a1a98)}},
+         {{TOBN(0x5b7fc8c4, 0xe0e8ad93), TOBN(0xb5679aee, 0x5fab868d),
+           TOBN(0xb1f9d2fa, 0x2b3946f3), TOBN(0x458897dc, 0x5685b50a)},
+          {TOBN(0x1e98c930, 0x89d0caf3), TOBN(0x39564c5f, 0x78642e92),
+           TOBN(0x1b77729a, 0x0dbdaf18), TOBN(0xf9170722, 0x579e82e6)}},
+         {{TOBN(0x680c0317, 0xe4515fa5), TOBN(0xf85cff84, 0xfb0c790f),
+           TOBN(0xc7a82aab, 0x6d2e0765), TOBN(0x7446bca9, 0x35c82b32)},
+          {TOBN(0x5de607aa, 0x6d63184f), TOBN(0x7c1a46a8, 0x262803a6),
+           TOBN(0xd218313d, 0xaebe8035), TOBN(0x92113ffd, 0xc73c51f8)}},
+         {{TOBN(0x4b38e083, 0x12e7e46c), TOBN(0x69d0a37a, 0x56126bd5),
+           TOBN(0xfb3f324b, 0x73c07e04), TOBN(0xa0c22f67, 0x8fda7267)},
+          {TOBN(0x8f2c0051, 0x4d2c7d8f), TOBN(0xbc45ced3, 0xcbe2cae5),
+           TOBN(0xe1c6cf07, 0xa8f0f277), TOBN(0xbc392312, 0x1eb99a98)}},
+         {{TOBN(0x75537b7e, 0x3cc8ac85), TOBN(0x8d725f57, 0xdd02753b),
+           TOBN(0xfd05ff64, 0xb737df2f), TOBN(0x55fe8712, 0xf6d2531d)},
+          {TOBN(0x57ce04a9, 0x6ab6b01c), TOBN(0x69a02a89, 0x7cd93724),
+           TOBN(0x4f82ac35, 0xcf86699b), TOBN(0x8242d3ad, 0x9cb4b232)}},
+         {{TOBN(0x713d0f65, 0xd62105e5), TOBN(0xbb222bfa, 0x2d29be61),
+           TOBN(0xf2f9a79e, 0x6cfbef09), TOBN(0xfc24d8d3, 0xd5d6782f)},
+          {TOBN(0x5db77085, 0xd4129967), TOBN(0xdb81c3cc, 0xdc3c2a43),
+           TOBN(0x9d655fc0, 0x05d8d9a3), TOBN(0x3f5d057a, 0x54298026)}},
+         {{TOBN(0x1157f56d, 0x88c54694), TOBN(0xb26baba5, 0x9b09573e),
+           TOBN(0x2cab03b0, 0x22adffd1), TOBN(0x60a412c8, 0xdd69f383)},
+          {TOBN(0xed76e98b, 0x54b25039), TOBN(0xd4ee67d3, 0x687e714d),
+           TOBN(0x87739648, 0x7b00b594), TOBN(0xce419775, 0xc9ef709b)}},
+         {{TOBN(0x40f76f85, 0x1c203a40), TOBN(0x30d352d6, 0xeafd8f91),
+           TOBN(0xaf196d3d, 0x95578dd2), TOBN(0xea4bb3d7, 0x77cc3f3d)},
+          {TOBN(0x42a5bd03, 0xb98e782b), TOBN(0xac958c40, 0x0624920d),
+           TOBN(0xb838134c, 0xfc56fcc8), TOBN(0x86ec4ccf, 0x89572e5e)}},
+         {{TOBN(0x69c43526, 0x9be47be0), TOBN(0x323b7dd8, 0xcb28fea1),
+           TOBN(0xfa5538ba, 0x3a6c67e5), TOBN(0xef921d70, 0x1d378e46)},
+          {TOBN(0xf92961fc, 0x3c4b880e), TOBN(0x3f6f914e, 0x98940a67),
+           TOBN(0xa990eb0a, 0xfef0ff39), TOBN(0xa6c2920f, 0xf0eeff9c)}},
+         {{TOBN(0xca804166, 0x51b8d9a3), TOBN(0x42531bc9, 0x0ffb0db1),
+           TOBN(0x72ce4718, 0xaa82e7ce), TOBN(0x6e199913, 0xdf574741)},
+          {TOBN(0xd5f1b13d, 0xd5d36946), TOBN(0x8255dc65, 0xf68f0194),
+           TOBN(0xdc9df4cd, 0x8710d230), TOBN(0x3453c20f, 0x138c1988)}},
+         {{TOBN(0x9af98dc0, 0x89a6ef01), TOBN(0x4dbcc3f0, 0x9857df85),
+           TOBN(0x34805601, 0x5c1ad924), TOBN(0x40448da5, 0xd0493046)},
+          {TOBN(0xf629926d, 0x4ee343e2), TOBN(0x6343f1bd, 0x90e8a301),
+           TOBN(0xefc93491, 0x40815b3f), TOBN(0xf882a423, 0xde8f66fb)}},
+         {{TOBN(0x3a12d5f4, 0xe7db9f57), TOBN(0x7dfba38a, 0x3c384c27),
+           TOBN(0x7a904bfd, 0x6fc660b1), TOBN(0xeb6c5db3, 0x2773b21c)},
+          {TOBN(0xc350ee66, 0x1cdfe049), TOBN(0x9baac0ce, 0x44540f29),
+           TOBN(0xbc57b6ab, 0xa5ec6aad), TOBN(0x167ce8c3, 0x0a7c1baa)}},
+         {{TOBN(0xb23a03a5, 0x53fb2b56), TOBN(0x6ce141e7, 0x4e057f78),
+           TOBN(0x796525c3, 0x89e490d9), TOBN(0x0bc95725, 0xa31a7e75)},
+          {TOBN(0x1ec56791, 0x1220fd06), TOBN(0x716e3a3c, 0x408b0bd6),
+           TOBN(0x31cd6bf7, 0xe8ebeba9), TOBN(0xa7326ca6, 0xbee6b670)}},
+         {{TOBN(0x3d9f851c, 0xcd090c43), TOBN(0x561e8f13, 0xf12c3988),
+           TOBN(0x50490b6a, 0x904b7be4), TOBN(0x61690ce1, 0x0410737b)},
+          {TOBN(0x299e9a37, 0x0f009052), TOBN(0x258758f0, 0xf026092e),
+           TOBN(0x9fa255f3, 0xfdfcdc0f), TOBN(0xdbc9fb1f, 0xc0e1bcd2)}},
+         {{TOBN(0x35f9dd6e, 0x24651840), TOBN(0xdca45a84, 0xa5c59abc),
+           TOBN(0x103d396f, 0xecca4938), TOBN(0x4532da0a, 0xb97b3f29)},
+          {TOBN(0xc4135ea5, 0x1999a6bf), TOBN(0x3aa9505a, 0x5e6bf2ee),
+           TOBN(0xf77cef06, 0x3f5be093), TOBN(0x97d1a0f8, 0xa943152e)}},
+         {{TOBN(0x2cb0ebba, 0x2e1c21dd), TOBN(0xf41b29fc, 0x2c6797c4),
+           TOBN(0xc6e17321, 0xb300101f), TOBN(0x4422b0e9, 0xd0d79a89)},
+          {TOBN(0x49e4901c, 0x92f1bfc4), TOBN(0x06ab1f8f, 0xe1e10ed9),
+           TOBN(0x84d35577, 0xdb2926b8), TOBN(0xca349d39, 0x356e8ec2)}},
+         {{TOBN(0x70b63d32, 0x343bf1a9), TOBN(0x8fd3bd28, 0x37d1a6b1),
+           TOBN(0x0454879c, 0x316865b4), TOBN(0xee959ff6, 0xc458efa2)},
+          {TOBN(0x0461dcf8, 0x9706dc3f), TOBN(0x737db0e2, 0x164e4b2e),
+           TOBN(0x09262680, 0x2f8843c8), TOBN(0x54498bbc, 0x7745e6f6)}},
+         {{TOBN(0x359473fa, 0xa29e24af), TOBN(0xfcc3c454, 0x70aa87a1),
+           TOBN(0xfd2c4bf5, 0x00573ace), TOBN(0xb65b514e, 0x28dd1965)},
+          {TOBN(0xe46ae7cf, 0x2193e393), TOBN(0x60e9a4e1, 0xf5444d97),
+           TOBN(0xe7594e96, 0x00ff38ed), TOBN(0x43d84d2f, 0x0a0e0f02)}},
+         {{TOBN(0x8b6db141, 0xee398a21), TOBN(0xb88a56ae, 0xe3bcc5be),
+           TOBN(0x0a1aa52f, 0x373460ea), TOBN(0x20da1a56, 0x160bb19b)},
+          {TOBN(0xfb54999d, 0x65bf0384), TOBN(0x71a14d24, 0x5d5a180e),
+           TOBN(0xbc44db7b, 0x21737b04), TOBN(0xd84fcb18, 0x01dd8e92)}},
+         {{TOBN(0x80de937b, 0xfa44b479), TOBN(0x53505499, 0x5c98fd4f),
+           TOBN(0x1edb12ab, 0x28f08727), TOBN(0x4c58b582, 0xa5f3ef53)},
+          {TOBN(0xbfb236d8, 0x8327f246), TOBN(0xc3a3bfaa, 0x4d7df320),
+           TOBN(0xecd96c59, 0xb96024f2), TOBN(0xfc293a53, 0x7f4e0433)}},
+         {{TOBN(0x5341352b, 0x5acf6e10), TOBN(0xc50343fd, 0xafe652c3),
+           TOBN(0x4af3792d, 0x18577a7f), TOBN(0xe1a4c617, 0xaf16823d)},
+          {TOBN(0x9b26d0cd, 0x33425d0a), TOBN(0x306399ed, 0x9b7bc47f),
+           TOBN(0x2a792f33, 0x706bb20b), TOBN(0x31219614, 0x98111055)}},
+         {{TOBN(0x864ec064, 0x87f5d28b), TOBN(0x11392d91, 0x962277fd),
+           TOBN(0xb5aa7942, 0xbb6aed5f), TOBN(0x080094dc, 0x47e799d9)},
+          {TOBN(0x4afa588c, 0x208ba19b), TOBN(0xd3e7570f, 0x8512f284),
+           TOBN(0xcbae64e6, 0x02f5799a), TOBN(0xdeebe7ef, 0x514b9492)}},
+         {{TOBN(0x30300f98, 0xe5c298ff), TOBN(0x17f561be, 0x3678361f),
+           TOBN(0xf52ff312, 0x98cb9a16), TOBN(0x6233c3bc, 0x5562d490)},
+          {TOBN(0x7bfa15a1, 0x92e3a2cb), TOBN(0x961bcfd1, 0xe6365119),
+           TOBN(0x3bdd29bf, 0x2c8c53b1), TOBN(0x739704df, 0x822844ba)}},
+         {{TOBN(0x7dacfb58, 0x7e7b754b), TOBN(0x23360791, 0xa806c9b9),
+           TOBN(0xe7eb88c9, 0x23504452), TOBN(0x2983e996, 0x852c1783)},
+          {TOBN(0xdd4ae529, 0x958d881d), TOBN(0x026bae03, 0x262c7b3c),
+           TOBN(0x3a6f9193, 0x960b52d1), TOBN(0xd0980f90, 0x92696cfb)}},
+         {{TOBN(0x4c1f428c, 0xd5f30851), TOBN(0x94dfed27, 0x2a4f6630),
+           TOBN(0x4df53772, 0xfc5d48a4), TOBN(0xdd2d5a2f, 0x933260ce)},
+          {TOBN(0x574115bd, 0xd44cc7a5), TOBN(0x4ba6b20d, 0xbd12533a),
+           TOBN(0x30e93cb8, 0x243057c9), TOBN(0x794c486a, 0x14de320e)}},
+         {{TOBN(0xe925d4ce, 0xf21496e4), TOBN(0xf951d198, 0xec696331),
+           TOBN(0x9810e2de, 0x3e8d812f), TOBN(0xd0a47259, 0x389294ab)},
+          {TOBN(0x513ba2b5, 0x0e3bab66), TOBN(0x462caff5, 0xabad306f),
+           TOBN(0xe2dc6d59, 0xaf04c49e), TOBN(0x1aeb8750, 0xe0b84b0b)}},
+         {{TOBN(0xc034f12f, 0x2f7d0ca2), TOBN(0x6d2e8128, 0xe06acf2f),
+           TOBN(0x801f4f83, 0x21facc2f), TOBN(0xa1170c03, 0xf40ef607)},
+          {TOBN(0xfe0a1d4f, 0x7805a99c), TOBN(0xbde56a36, 0xcc26aba5),
+           TOBN(0x5b1629d0, 0x35531f40), TOBN(0xac212c2b, 0x9afa6108)}},
+         {{TOBN(0x30a06bf3, 0x15697be5), TOBN(0x6f0545dc, 0x2c63c7c1),
+           TOBN(0x5d8cb842, 0x7ccdadaf), TOBN(0xd52e379b, 0xac7015bb)},
+          {TOBN(0xc4f56147, 0xf462c23e), TOBN(0xd44a4298, 0x46bc24b0),
+           TOBN(0xbc73d23a, 0xe2856d4f), TOBN(0x61cedd8c, 0x0832bcdf)}},
+         {{TOBN(0x60953556, 0x99f241d7), TOBN(0xee4adbd7, 0x001a349d),
+           TOBN(0x0b35bf6a, 0xaa89e491), TOBN(0x7f0076f4, 0x136f7546)},
+          {TOBN(0xd19a18ba, 0x9264da3d), TOBN(0x6eb2d2cd, 0x62a7a28b),
+           TOBN(0xcdba941f, 0x8761c971), TOBN(0x1550518b, 0xa3be4a5d)}},
+         {{TOBN(0xd0e8e2f0, 0x57d0b70c), TOBN(0xeea8612e, 0xcd133ba3),
+           TOBN(0x814670f0, 0x44416aec), TOBN(0x424db6c3, 0x30775061)},
+          {TOBN(0xd96039d1, 0x16213fd1), TOBN(0xc61e7fa5, 0x18a3478f),
+           TOBN(0xa805bdcc, 0xcb0c5021), TOBN(0xbdd6f3a8, 0x0cc616dd)}},
+         {{TOBN(0x06009667, 0x5d97f7e2), TOBN(0x31db0fc1, 0xaf0bf4b6),
+           TOBN(0x23680ed4, 0x5491627a), TOBN(0xb99a3c66, 0x7d741fb1)},
+          {TOBN(0xe9bb5f55, 0x36b1ff92), TOBN(0x29738577, 0x512b388d),
+           TOBN(0xdb8a2ce7, 0x50fcf263), TOBN(0x385346d4, 0x6c4f7b47)}},
+         {{TOBN(0xbe86c5ef, 0x31631f9e), TOBN(0xbf91da21, 0x03a57a29),
+           TOBN(0xc3b1f796, 0x7b23f821), TOBN(0x0f7d00d2, 0x770db354)},
+          {TOBN(0x8ffc6c3b, 0xd8fe79da), TOBN(0xcc5e8c40, 0xd525c996),
+           TOBN(0x4640991d, 0xcfff632a), TOBN(0x64d97e8c, 0x67112528)}},
+         {{TOBN(0xc232d973, 0x02f1cd1e), TOBN(0xce87eacb, 0x1dd212a4),
+           TOBN(0x6e4c8c73, 0xe69802f7), TOBN(0x12ef0290, 0x1fffddbd)},
+          {TOBN(0x941ec74e, 0x1bcea6e2), TOBN(0xd0b54024, 0x3cb92cbb),
+           TOBN(0x809fb9d4, 0x7e8f9d05), TOBN(0x3bf16159, 0xf2992aae)}},
+         {{TOBN(0xad40f279, 0xf8a7a838), TOBN(0x11aea631, 0x05615660),
+           TOBN(0xbf52e6f1, 0xa01f6fa1), TOBN(0xef046995, 0x3dc2aec9)},
+          {TOBN(0x785dbec9, 0xd8080711), TOBN(0xe1aec60a, 0x9fdedf76),
+           TOBN(0xece797b5, 0xfa21c126), TOBN(0xc66e898f, 0x05e52732)}},
+         {{TOBN(0x39bb69c4, 0x08811fdb), TOBN(0x8bfe1ef8, 0x2fc7f082),
+           TOBN(0xc8e7a393, 0x174f4138), TOBN(0xfba8ad1d, 0xd58d1f98)},
+          {TOBN(0xbc21d0ce, 0xbfd2fd5b), TOBN(0x0b839a82, 0x6ee60d61),
+           TOBN(0xaacf7658, 0xafd22253), TOBN(0xb526bed8, 0xaae396b3)}},
+         {{TOBN(0xccc1bbc2, 0x38564464), TOBN(0x9e3ff947, 0x8c45bc73),
+           TOBN(0xcde9bca3, 0x58188a78), TOBN(0x138b8ee0, 0xd73bf8f7)},
+          {TOBN(0x5c7e234c, 0x4123c489), TOBN(0x66e69368, 0xfa643297),
+           TOBN(0x0629eeee, 0x39a15fa3), TOBN(0x95fab881, 0xa9e2a927)}},
+         {{TOBN(0xb2497007, 0xeafbb1e1), TOBN(0xd75c9ce6, 0xe75b7a93),
+           TOBN(0x3558352d, 0xefb68d78), TOBN(0xa2f26699, 0x223f6396)},
+          {TOBN(0xeb911ecf, 0xe469b17a), TOBN(0x62545779, 0xe72d3ec2),
+           TOBN(0x8ea47de7, 0x82cb113f), TOBN(0xebe4b086, 0x4e1fa98d)}},
+         {{TOBN(0xec2d5ed7, 0x8cdfedb1), TOBN(0xa535c077, 0xfe211a74),
+           TOBN(0x9678109b, 0x11d244c5), TOBN(0xf17c8bfb, 0xbe299a76)},
+          {TOBN(0xb651412e, 0xfb11fbc4), TOBN(0xea0b5482, 0x94ab3f65),
+           TOBN(0xd8dffd95, 0x0cf78243), TOBN(0x2e719e57, 0xce0361d4)}},
+         {{TOBN(0x9007f085, 0x304ddc5b), TOBN(0x095e8c6d, 0x4daba2ea),
+           TOBN(0x5a33cdb4, 0x3f9d28a9), TOBN(0x85b95cd8, 0xe2283003)},
+          {TOBN(0xbcd6c819, 0xb9744733), TOBN(0x29c5f538, 0xfc7f5783),
+           TOBN(0x6c49b2fa, 0xd59038e4), TOBN(0x68349cc1, 0x3bbe1018)}},
+         {{TOBN(0xcc490c1d, 0x21830ee5), TOBN(0x36f9c4ee, 0xe9bfa297),
+           TOBN(0x58fd7294, 0x48de1a94), TOBN(0xaadb13a8, 0x4e8f2cdc)},
+          {TOBN(0x515eaaa0, 0x81313dba), TOBN(0xc76bb468, 0xc2152dd8),
+           TOBN(0x357f8d75, 0xa653dbf8), TOBN(0xe4d8c4d1, 0xb14ac143)}},
+         {{TOBN(0xbdb8e675, 0xb055cb40), TOBN(0x898f8e7b, 0x977b5167),
+           TOBN(0xecc65651, 0xb82fb863), TOBN(0x56544814, 0x6d88f01f)},
+          {TOBN(0xb0928e95, 0x263a75a9), TOBN(0xcfb6836f, 0x1a22fcda),
+           TOBN(0x651d14db, 0x3f3bd37c), TOBN(0x1d3837fb, 0xb6ad4664)}},
+         {{TOBN(0x7c5fb538, 0xff4f94ab), TOBN(0x7243c712, 0x6d7fb8f2),
+           TOBN(0xef13d60c, 0xa85c5287), TOBN(0x18cfb7c7, 0x4bb8dd1b)},
+          {TOBN(0x82f9bfe6, 0x72908219), TOBN(0x35c4592b, 0x9d5144ab),
+           TOBN(0x52734f37, 0x9cf4b42f), TOBN(0x6bac55e7, 0x8c60ddc4)}},
+         {{TOBN(0xb5cd811e, 0x94dea0f6), TOBN(0x259ecae4, 0xe18cc1a3),
+           TOBN(0x6a0e836e, 0x15e660f8), TOBN(0x6c639ea6, 0x0e02bff2)},
+          {TOBN(0x8721b8cb, 0x7e1026fd), TOBN(0x9e73b50b, 0x63261942),
+           TOBN(0xb8c70974, 0x77f01da3), TOBN(0x1839e6a6, 0x8268f57f)}},
+         {{TOBN(0x571b9415, 0x5150b805), TOBN(0x1892389e, 0xf92c7097),
+           TOBN(0x8d69c18e, 0x4a084b95), TOBN(0x7014c512, 0xbe5b495c)},
+          {TOBN(0x4780db36, 0x1b07523c), TOBN(0x2f6219ce, 0x2c1c64fa),
+           TOBN(0xc38b81b0, 0x602c105a), TOBN(0xab4f4f20, 0x5dc8e360)}},
+         {{TOBN(0x20d3c982, 0xcf7d62d2), TOBN(0x1f36e29d, 0x23ba8150),
+           TOBN(0x48ae0bf0, 0x92763f9e), TOBN(0x7a527e6b, 0x1d3a7007)},
+          {TOBN(0xb4a89097, 0x581a85e3), TOBN(0x1f1a520f, 0xdc158be5),
+           TOBN(0xf98db37d, 0x167d726e), TOBN(0x8802786e, 0x1113e862)}}},
+        {{{TOBN(0xefb2149e, 0x36f09ab0), TOBN(0x03f163ca, 0x4a10bb5b),
+           TOBN(0xd0297045, 0x06e20998), TOBN(0x56f0af00, 0x1b5a3bab)},
+          {TOBN(0x7af4cfec, 0x70880e0d), TOBN(0x7332a66f, 0xbe3d913f),
+           TOBN(0x32e6c84a, 0x7eceb4bd), TOBN(0xedc4a79a, 0x9c228f55)}},
+         {{TOBN(0xc37c7dd0, 0xc55c4496), TOBN(0xa6a96357, 0x25bbabd2),
+           TOBN(0x5b7e63f2, 0xadd7f363), TOBN(0x9dce3782, 0x2e73f1df)},
+          {TOBN(0xe1e5a16a, 0xb2b91f71), TOBN(0xe4489823, 0x5ba0163c),
+           TOBN(0xf2759c32, 0xf6e515ad), TOBN(0xa5e2f1f8, 0x8615eecf)}},
+         {{TOBN(0x74519be7, 0xabded551), TOBN(0x03d358b8, 0xc8b74410),
+           TOBN(0x4d00b10b, 0x0e10d9a9), TOBN(0x6392b0b1, 0x28da52b7)},
+          {TOBN(0x6744a298, 0x0b75c904), TOBN(0xc305b0ae, 0xa8f7f96c),
+           TOBN(0x042e421d, 0x182cf932), TOBN(0xf6fc5d50, 0x9e4636ca)}},
+         {{TOBN(0x795847c9, 0xd64cc78c), TOBN(0x6c50621b, 0x9b6cb27b),
+           TOBN(0x07099bf8, 0xdf8022ab), TOBN(0x48f862eb, 0xc04eda1d)},
+          {TOBN(0xd12732ed, 0xe1603c16), TOBN(0x19a80e0f, 0x5c9a9450),
+           TOBN(0xe2257f54, 0xb429b4fc), TOBN(0x66d3b2c6, 0x45460515)}},
+         {{TOBN(0x6ca4f87e, 0x822e37be), TOBN(0x73f237b4, 0x253bda4e),
+           TOBN(0xf747f3a2, 0x41190aeb), TOBN(0xf06fa36f, 0x804cf284)},
+          {TOBN(0x0a6bbb6e, 0xfc621c12), TOBN(0x5d624b64, 0x40b80ec6),
+           TOBN(0x4b072425, 0x7ba556f3), TOBN(0x7fa0c354, 0x3e2d20a8)}},
+         {{TOBN(0xe921fa31, 0xe3229d41), TOBN(0xa929c652, 0x94531bd4),
+           TOBN(0x84156027, 0xa6d38209), TOBN(0xf3d69f73, 0x6bdb97bd)},
+          {TOBN(0x8906d19a, 0x16833631), TOBN(0x68a34c2e, 0x03d51be3),
+           TOBN(0xcb59583b, 0x0e511cd8), TOBN(0x99ce6bfd, 0xfdc132a8)}},
+         {{TOBN(0x3facdaaa, 0xffcdb463), TOBN(0x658bbc1a, 0x34a38b08),
+           TOBN(0x12a801f8, 0xf1a9078d), TOBN(0x1567bcf9, 0x6ab855de)},
+          {TOBN(0xe08498e0, 0x3572359b), TOBN(0xcf0353e5, 0x8659e68b),
+           TOBN(0xbb86e9c8, 0x7d23807c), TOBN(0xbc08728d, 0x2198e8a2)}},
+         {{TOBN(0x8de2b7bc, 0x453cadd6), TOBN(0x203900a7, 0xbc0bc1f8),
+           TOBN(0xbcd86e47, 0xa6abd3af), TOBN(0x911cac12, 0x8502effb)},
+          {TOBN(0x2d550242, 0xec965469), TOBN(0x0e9f7692, 0x29e0017e),
+           TOBN(0x633f078f, 0x65979885), TOBN(0xfb87d449, 0x4cf751ef)}},
+         {{TOBN(0xe1790e4b, 0xfc25419a), TOBN(0x36467203, 0x4bff3cfd),
+           TOBN(0xc8db6386, 0x25b6e83f), TOBN(0x6cc69f23, 0x6cad6fd2)},
+          {TOBN(0x0219e45a, 0x6bc68bb9), TOBN(0xe43d79b6, 0x297f7334),
+           TOBN(0x7d445368, 0x465dc97c), TOBN(0x4b9eea32, 0x2a0b949a)}},
+         {{TOBN(0x1b96c6ba, 0x6102d021), TOBN(0xeaafac78, 0x2f4461ea),
+           TOBN(0xd4b85c41, 0xc49f19a8), TOBN(0x275c28e4, 0xcf538875)},
+          {TOBN(0x35451a9d, 0xdd2e54e0), TOBN(0x6991adb5, 0x0605618b),
+           TOBN(0x5b8b4bcd, 0x7b36cd24), TOBN(0x372a4f8c, 0x56f37216)}},
+         {{TOBN(0xc890bd73, 0xa6a5da60), TOBN(0x6f083da0, 0xdc4c9ff0),
+           TOBN(0xf4e14d94, 0xf0536e57), TOBN(0xf9ee1eda, 0xaaec8243)},
+          {TOBN(0x571241ec, 0x8bdcf8e7), TOBN(0xa5db8271, 0x0b041e26),
+           TOBN(0x9a0b9a99, 0xe3fff040), TOBN(0xcaaf21dd, 0x7c271202)}},
+         {{TOBN(0xb4e2b2e1, 0x4f0dd2e8), TOBN(0xe77e7c4f, 0x0a377ac7),
+           TOBN(0x69202c3f, 0x0d7a2198), TOBN(0xf759b7ff, 0x28200eb8)},
+          {TOBN(0xc87526ed, 0xdcfe314e), TOBN(0xeb84c524, 0x53d5cf99),
+           TOBN(0xb1b52ace, 0x515138b6), TOBN(0x5aa7ff8c, 0x23fca3f4)}},
+         {{TOBN(0xff0b13c3, 0xb9791a26), TOBN(0x960022da, 0xcdd58b16),
+           TOBN(0xdbd55c92, 0x57aad2de), TOBN(0x3baaaaa3, 0xf30fe619)},
+          {TOBN(0x9a4b2346, 0x0d881efd), TOBN(0x506416c0, 0x46325e2a),
+           TOBN(0x91381e76, 0x035c18d4), TOBN(0xb3bb68be, 0xf27817b0)}},
+         {{TOBN(0x15bfb8bf, 0x5116f937), TOBN(0x7c64a586, 0xc1268943),
+           TOBN(0x71e25cc3, 0x8419a2c8), TOBN(0x9fd6b0c4, 0x8335f463)},
+          {TOBN(0x4bf0ba3c, 0xe8ee0e0e), TOBN(0x6f6fba60, 0x298c21fa),
+           TOBN(0x57d57b39, 0xae66bee0), TOBN(0x292d5130, 0x22672544)}},
+         {{TOBN(0xf451105d, 0xbab093b3), TOBN(0x012f59b9, 0x02839986),
+           TOBN(0x8a915802, 0x3474a89c), TOBN(0x048c919c, 0x2de03e97)},
+          {TOBN(0xc476a2b5, 0x91071cd5), TOBN(0x791ed89a, 0x034970a5),
+           TOBN(0x89bd9042, 0xe1b7994b), TOBN(0x8eaf5179, 0xa1057ffd)}},
+         {{TOBN(0x6066e2a2, 0xd551ee10), TOBN(0x87a8f1d8, 0x727e09a6),
+           TOBN(0x00d08bab, 0x2c01148d), TOBN(0x6da8e4f1, 0x424f33fe)},
+          {TOBN(0x466d17f0, 0xcf9a4e71), TOBN(0xff502010, 0x3bf5cb19),
+           TOBN(0xdccf97d8, 0xd062ecc0), TOBN(0x80c0d9af, 0x81d80ac4)}},
+         {{TOBN(0xe87771d8, 0x033f2876), TOBN(0xb0186ec6, 0x7d5cc3db),
+           TOBN(0x58e8bb80, 0x3bc9bc1d), TOBN(0x4d1395cc, 0x6f6ef60e)},
+          {TOBN(0xa73c62d6, 0x186244a0), TOBN(0x918e5f23, 0x110a5b53),
+           TOBN(0xed4878ca, 0x741b7eab), TOBN(0x3038d71a, 0xdbe03e51)}},
+         {{TOBN(0x840204b7, 0xa93c3246), TOBN(0x21ab6069, 0xa0b9b4cd),
+           TOBN(0xf5fa6e2b, 0xb1d64218), TOBN(0x1de6ad0e, 0xf3d56191)},
+          {TOBN(0x570aaa88, 0xff1929c7), TOBN(0xc6df4c6b, 0x640e87b5),
+           TOBN(0xde8a74f2, 0xc65f0ccc), TOBN(0x8b972fd5, 0xe6f6cc01)}},
+         {{TOBN(0x3fff36b6, 0x0b846531), TOBN(0xba7e45e6, 0x10a5e475),
+           TOBN(0x84a1d10e, 0x4145b6c5), TOBN(0xf1f7f91a, 0x5e046d9d)},
+          {TOBN(0x0317a692, 0x44de90d7), TOBN(0x951a1d4a, 0xf199c15e),
+           TOBN(0x91f78046, 0xc9d73deb), TOBN(0x74c82828, 0xfab8224f)}},
+         {{TOBN(0xaa6778fc, 0xe7560b90), TOBN(0xb4073e61, 0xa7e824ce),
+           TOBN(0xff0d693c, 0xd642eba8), TOBN(0x7ce2e57a, 0x5dccef38)},
+          {TOBN(0x89c2c789, 0x1df1ad46), TOBN(0x83a06922, 0x098346fd),
+           TOBN(0x2d715d72, 0xda2fc177), TOBN(0x7b6dd71d, 0x85b6cf1d)}},
+         {{TOBN(0xc60a6d0a, 0x73fa9cb0), TOBN(0xedd3992e, 0x328bf5a9),
+           TOBN(0xc380ddd0, 0x832c8c82), TOBN(0xd182d410, 0xa2a0bf50)},
+          {TOBN(0x7d9d7438, 0xd9a528db), TOBN(0xe8b1a0e9, 0xcaf53994),
+           TOBN(0xddd6e5fe, 0x0e19987c), TOBN(0xacb8df03, 0x190b059d)}},
+         {{TOBN(0x53703a32, 0x8300129f), TOBN(0x1f637662, 0x68c43bfd),
+           TOBN(0xbcbd1913, 0x00e54051), TOBN(0x812fcc62, 0x7bf5a8c5)},
+          {TOBN(0x3f969d5f, 0x29fb85da), TOBN(0x72f4e00a, 0x694759e8),
+           TOBN(0x426b6e52, 0x790726b7), TOBN(0x617bbc87, 0x3bdbb209)}},
+         {{TOBN(0x511f8bb9, 0x97aee317), TOBN(0x812a4096, 0xe81536a8),
+           TOBN(0x137dfe59, 0x3ac09b9b), TOBN(0x0682238f, 0xba8c9a7a)},
+          {TOBN(0x7072ead6, 0xaeccb4bd), TOBN(0x6a34e9aa, 0x692ba633),
+           TOBN(0xc82eaec2, 0x6fff9d33), TOBN(0xfb753512, 0x1d4d2b62)}},
+         {{TOBN(0x1a0445ff, 0x1d7aadab), TOBN(0x65d38260, 0xd5f6a67c),
+           TOBN(0x6e62fb08, 0x91cfb26f), TOBN(0xef1e0fa5, 0x5c7d91d6)},
+          {TOBN(0x47e7c7ba, 0x33db72cd), TOBN(0x017cbc09, 0xfa7c74b2),
+           TOBN(0x3c931590, 0xf50a503c), TOBN(0xcac54f60, 0x616baa42)}},
+         {{TOBN(0x9b6cd380, 0xb2369f0f), TOBN(0x97d3a70d, 0x23c76151),
+           TOBN(0x5f9dd6fc, 0x9862a9c6), TOBN(0x044c4ab2, 0x12312f51)},
+          {TOBN(0x035ea0fd, 0x834a2ddc), TOBN(0x49e6b862, 0xcc7b826d),
+           TOBN(0xb03d6883, 0x62fce490), TOBN(0x62f2497a, 0xb37e36e9)}},
+         {{TOBN(0x04b005b6, 0xc6458293), TOBN(0x36bb5276, 0xe8d10af7),
+           TOBN(0xacf2dc13, 0x8ee617b8), TOBN(0x470d2d35, 0xb004b3d4)},
+          {TOBN(0x06790832, 0xfeeb1b77), TOBN(0x2bb75c39, 0x85657f9c),
+           TOBN(0xd70bd4ed, 0xc0f60004), TOBN(0xfe797ecc, 0x219b018b)}},
+         {{TOBN(0x9b5bec2a, 0x753aebcc), TOBN(0xdaf9f3dc, 0xc939eca5),
+           TOBN(0xd6bc6833, 0xd095ad09), TOBN(0x98abdd51, 0xdaa4d2fc)},
+          {TOBN(0xd9840a31, 0x8d168be5), TOBN(0xcf7c10e0, 0x2325a23c),
+           TOBN(0xa5c02aa0, 0x7e6ecfaf), TOBN(0x2462e7e6, 0xb5bfdf18)}},
+         {{TOBN(0xab2d8a8b, 0xa0cc3f12), TOBN(0x68dd485d, 0xbc672a29),
+           TOBN(0x72039752, 0x596f2cd3), TOBN(0x5d3eea67, 0xa0cf3d8d)},
+          {TOBN(0x810a1a81, 0xe6602671), TOBN(0x8f144a40, 0x14026c0c),
+           TOBN(0xbc753a6d, 0x76b50f85), TOBN(0xc4dc21e8, 0x645cd4a4)}},
+         {{TOBN(0xc5262dea, 0x521d0378), TOBN(0x802b8e0e, 0x05011c6f),
+           TOBN(0x1ba19cbb, 0x0b4c19ea), TOBN(0x21db64b5, 0xebf0aaec)},
+          {TOBN(0x1f394ee9, 0x70342f9d), TOBN(0x93a10aee, 0x1bc44a14),
+           TOBN(0xa7eed31b, 0x3efd0baa), TOBN(0x6e7c824e, 0x1d154e65)}},
+         {{TOBN(0xee23fa81, 0x9966e7ee), TOBN(0x64ec4aa8, 0x05b7920d),
+           TOBN(0x2d44462d, 0x2d90aad4), TOBN(0xf44dd195, 0xdf277ad5)},
+          {TOBN(0x8d6471f1, 0xbb46b6a1), TOBN(0x1e65d313, 0xfd885090),
+           TOBN(0x33a800f5, 0x13a977b4), TOBN(0xaca9d721, 0x0797e1ef)}},
+         {{TOBN(0x9a5a85a0, 0xfcff6a17), TOBN(0x9970a3f3, 0x1eca7cee),
+           TOBN(0xbb9f0d6b, 0xc9504be3), TOBN(0xe0c504be, 0xadd24ee2)},
+          {TOBN(0x7e09d956, 0x77fcc2f4), TOBN(0xef1a5227, 0x65bb5fc4),
+           TOBN(0x145d4fb1, 0x8b9286aa), TOBN(0x66fd0c5d, 0x6649028b)}},
+         {{TOBN(0x98857ceb, 0x1bf4581c), TOBN(0xe635e186, 0xaca7b166),
+           TOBN(0x278ddd22, 0x659722ac), TOBN(0xa0903c4c, 0x1db68007)},
+          {TOBN(0x366e4589, 0x48f21402), TOBN(0x31b49c14, 0xb96abda2),
+           TOBN(0x329c4b09, 0xe0403190), TOBN(0x97197ca3, 0xd29f43fe)}},
+         {{TOBN(0x8073dd1e, 0x274983d8), TOBN(0xda1a3bde, 0x55717c8f),
+           TOBN(0xfd3d4da2, 0x0361f9d1), TOBN(0x1332d081, 0x4c7de1ce)},
+          {TOBN(0x9b7ef7a3, 0xaa6d0e10), TOBN(0x17db2e73, 0xf54f1c4a),
+           TOBN(0xaf3dffae, 0x4cd35567), TOBN(0xaaa2f406, 0xe56f4e71)}},
+         {{TOBN(0x8966759e, 0x7ace3fc7), TOBN(0x9594eacf, 0x45a8d8c6),
+           TOBN(0x8de3bd8b, 0x91834e0e), TOBN(0xafe4ca53, 0x548c0421)},
+          {TOBN(0xfdd7e856, 0xe6ee81c6), TOBN(0x8f671beb, 0x6b891a3a),
+           TOBN(0xf7a58f2b, 0xfae63829), TOBN(0x9ab186fb, 0x9c11ac9f)}},
+         {{TOBN(0x8d6eb369, 0x10b5be76), TOBN(0x046b7739, 0xfb040bcd),
+           TOBN(0xccb4529f, 0xcb73de88), TOBN(0x1df0fefc, 0xcf26be03)},
+          {TOBN(0xad7757a6, 0xbcfcd027), TOBN(0xa8786c75, 0xbb3165ca),
+           TOBN(0xe9db1e34, 0x7e99a4d9), TOBN(0x99ee86df, 0xb06c504b)}},
+         {{TOBN(0x5b7c2ddd, 0xc15c9f0a), TOBN(0xdf87a734, 0x4295989e),
+           TOBN(0x59ece47c, 0x03d08fda), TOBN(0xb074d3dd, 0xad5fc702)},
+          {TOBN(0x20407903, 0x51a03776), TOBN(0x2bb1f77b, 0x2a608007),
+           TOBN(0x25c58f4f, 0xe1153185), TOBN(0xe6df62f6, 0x766e6447)}},
+         {{TOBN(0xefb3d1be, 0xed51275a), TOBN(0x5de47dc7, 0x2f0f483f),
+           TOBN(0x7932d98e, 0x97c2bedf), TOBN(0xd5c11927, 0x0219f8a1)},
+          {TOBN(0x9d751200, 0xa73a294e), TOBN(0x5f88434a, 0x9dc20172),
+           TOBN(0xd28d9fd3, 0xa26f506a), TOBN(0xa890cd31, 0x9d1dcd48)}},
+         {{TOBN(0x0aebaec1, 0x70f4d3b4), TOBN(0xfd1a1369, 0x0ffc8d00),
+           TOBN(0xb9d9c240, 0x57d57838), TOBN(0x45929d26, 0x68bac361)},
+          {TOBN(0x5a2cd060, 0x25b15ca6), TOBN(0x4b3c83e1, 0x6e474446),
+           TOBN(0x1aac7578, 0xee1e5134), TOBN(0xa418f5d6, 0xc91e2f41)}},
+         {{TOBN(0x6936fc8a, 0x213ed68b), TOBN(0x860ae7ed, 0x510a5224),
+           TOBN(0x63660335, 0xdef09b53), TOBN(0x641b2897, 0xcd79c98d)},
+          {TOBN(0x29bd38e1, 0x01110f35), TOBN(0x79c26f42, 0x648b1937),
+           TOBN(0x64dae519, 0x9d9164f4), TOBN(0xd85a2310, 0x0265c273)}},
+         {{TOBN(0x7173dd5d, 0x4b07e2b1), TOBN(0xd144c4cb, 0x8d9ea221),
+           TOBN(0xe8b04ea4, 0x1105ab14), TOBN(0x92dda542, 0xfe80d8f1)},
+          {TOBN(0xe9982fa8, 0xcf03dce6), TOBN(0x8b5ea965, 0x1a22cffc),
+           TOBN(0xf7f4ea7f, 0x3fad88c4), TOBN(0x62db773e, 0x6a5ba95c)}},
+         {{TOBN(0xd20f02fb, 0x93f24567), TOBN(0xfd46c69a, 0x315257ca),
+           TOBN(0x0ac74cc7, 0x8bcab987), TOBN(0x46f31c01, 0x5ceca2f5)},
+          {TOBN(0x40aedb59, 0x888b219e), TOBN(0xe50ecc37, 0xe1fccd02),
+           TOBN(0x1bcd9dad, 0x911f816c), TOBN(0x583cc1ec, 0x8db9b00c)}},
+         {{TOBN(0xf3cd2e66, 0xa483bf11), TOBN(0xfa08a6f5, 0xb1b2c169),
+           TOBN(0xf375e245, 0x4be9fa28), TOBN(0x99a7ffec, 0x5b6d011f)},
+          {TOBN(0x6a3ebddb, 0xc4ae62da), TOBN(0x6cea00ae, 0x374aef5d),
+           TOBN(0xab5fb98d, 0x9d4d05bc), TOBN(0x7cba1423, 0xd560f252)}},
+         {{TOBN(0x49b2cc21, 0x208490de), TOBN(0x1ca66ec3, 0xbcfb2879),
+           TOBN(0x7f1166b7, 0x1b6fb16f), TOBN(0xfff63e08, 0x65fe5db3)},
+          {TOBN(0xb8345abe, 0x8b2610be), TOBN(0xb732ed80, 0x39de3df4),
+           TOBN(0x0e24ed50, 0x211c32b4), TOBN(0xd10d8a69, 0x848ff27d)}},
+         {{TOBN(0xc1074398, 0xed4de248), TOBN(0xd7cedace, 0x10488927),
+           TOBN(0xa4aa6bf8, 0x85673e13), TOBN(0xb46bae91, 0x6daf30af)},
+          {TOBN(0x07088472, 0xfcef7ad8), TOBN(0x61151608, 0xd4b35e97),
+           TOBN(0xbcfe8f26, 0xdde29986), TOBN(0xeb84c4c7, 0xd5a34c79)}},
+         {{TOBN(0xc1eec55c, 0x164e1214), TOBN(0x891be86d, 0xa147bb03),
+           TOBN(0x9fab4d10, 0x0ba96835), TOBN(0xbf01e9b8, 0xa5c1ae9f)},
+          {TOBN(0x6b4de139, 0xb186ebc0), TOBN(0xd5c74c26, 0x85b91bca),
+           TOBN(0x5086a99c, 0xc2d93854), TOBN(0xeed62a7b, 0xa7a9dfbc)}},
+         {{TOBN(0x8778ed6f, 0x76b7618a), TOBN(0xbff750a5, 0x03b66062),
+           TOBN(0x4cb7be22, 0xb65186db), TOBN(0x369dfbf0, 0xcc3a6d13)},
+          {TOBN(0xc7dab26c, 0x7191a321), TOBN(0x9edac3f9, 0x40ed718e),
+           TOBN(0xbc142b36, 0xd0cfd183), TOBN(0xc8af82f6, 0x7c991693)}},
+         {{TOBN(0xb3d1e4d8, 0x97ce0b2a), TOBN(0xe6d7c87f, 0xc3a55cdf),
+           TOBN(0x35846b95, 0x68b81afe), TOBN(0x018d12af, 0xd3c239d8)},
+          {TOBN(0x2b2c6208, 0x01206e15), TOBN(0xe0e42453, 0xa3b882c6),
+           TOBN(0x854470a3, 0xa50162d5), TOBN(0x08157478, 0x7017a62a)}},
+         {{TOBN(0x18bd3fb4, 0x820357c7), TOBN(0x992039ae, 0x6f1458ad),
+           TOBN(0x9a1df3c5, 0x25b44aa1), TOBN(0x2d780357, 0xed3d5281)},
+          {TOBN(0x58cf7e4d, 0xc77ad4d4), TOBN(0xd49a7998, 0xf9df4fc4),
+           TOBN(0x4465a8b5, 0x1d71205e), TOBN(0xa0ee0ea6, 0x649254aa)}},
+         {{TOBN(0x4b5eeecf, 0xab7bd771), TOBN(0x6c873073, 0x35c262b9),
+           TOBN(0xdc5bd648, 0x3c9d61e7), TOBN(0x233d6d54, 0x321460d2)},
+          {TOBN(0xd20c5626, 0xfc195bcc), TOBN(0x25445958, 0x04d78b63),
+           TOBN(0xe03fcb3d, 0x17ec8ef3), TOBN(0x54b690d1, 0x46b8f781)}},
+         {{TOBN(0x82fa2c8a, 0x21230646), TOBN(0xf51aabb9, 0x084f418c),
+           TOBN(0xff4fbec1, 0x1a30ba43), TOBN(0x6a5acf73, 0x743c9df7)},
+          {TOBN(0x1da2b357, 0xd635b4d5), TOBN(0xc3de68dd, 0xecd5c1da),
+           TOBN(0xa689080b, 0xd61af0dd), TOBN(0xdea5938a, 0xd665bf99)}},
+         {{TOBN(0x0231d71a, 0xfe637294), TOBN(0x01968aa6, 0xa5a81cd8),
+           TOBN(0x11252d50, 0x048e63b5), TOBN(0xc446bc52, 0x6ca007e9)},
+          {TOBN(0xef8c50a6, 0x96d6134b), TOBN(0x9361fbf5, 0x9e09a05c),
+           TOBN(0xf17f85a6, 0xdca3291a), TOBN(0xb178d548, 0xff251a21)}},
+         {{TOBN(0x87f6374b, 0xa4df3915), TOBN(0x566ce1bf, 0x2fd5d608),
+           TOBN(0x425cba4d, 0x7de35102), TOBN(0x6b745f8f, 0x58c5d5e2)},
+          {TOBN(0x88402af6, 0x63122edf), TOBN(0x3190f9ed, 0x3b989a89),
+           TOBN(0x4ad3d387, 0xebba3156), TOBN(0xef385ad9, 0xc7c469a5)}},
+         {{TOBN(0xb08281de, 0x3f642c29), TOBN(0x20be0888, 0x910ffb88),
+           TOBN(0xf353dd4a, 0xd5292546), TOBN(0x3f1627de, 0x8377a262)},
+          {TOBN(0xa5faa013, 0xeefcd638), TOBN(0x8f3bf626, 0x74cc77c3),
+           TOBN(0x32618f65, 0xa348f55e), TOBN(0x5787c0dc, 0x9fefeb9e)}},
+         {{TOBN(0xf1673aa2, 0xd9a23e44), TOBN(0x88dfa993, 0x4e10690d),
+           TOBN(0x1ced1b36, 0x2bf91108), TOBN(0x9193ceca, 0x3af48649)},
+          {TOBN(0xfb34327d, 0x2d738fc5), TOBN(0x6697b037, 0x975fee6c),
+           TOBN(0x2f485da0, 0xc04079a5), TOBN(0x2cdf5735, 0x2feaa1ac)}},
+         {{TOBN(0x76944420, 0xbd55659e), TOBN(0x7973e32b, 0x4376090c),
+           TOBN(0x86bb4fe1, 0x163b591a), TOBN(0x10441aed, 0xc196f0ca)},
+          {TOBN(0x3b431f4a, 0x045ad915), TOBN(0x6c11b437, 0xa4afacb1),
+           TOBN(0x30b0c7db, 0x71fdbbd8), TOBN(0xb642931f, 0xeda65acd)}},
+         {{TOBN(0x4baae6e8, 0x9c92b235), TOBN(0xa73bbd0e, 0x6b3993a1),
+           TOBN(0xd06d60ec, 0x693dd031), TOBN(0x03cab91b, 0x7156881c)},
+          {TOBN(0xd615862f, 0x1db3574b), TOBN(0x485b0185, 0x64bb061a),
+           TOBN(0x27434988, 0xa0181e06), TOBN(0x2cd61ad4, 0xc1c0c757)}},
+         {{TOBN(0x3effed5a, 0x2ff9f403), TOBN(0x8dc98d8b, 0x62239029),
+           TOBN(0x2206021e, 0x1f17b70d), TOBN(0xafbec0ca, 0xbf510015)},
+          {TOBN(0x9fed7164, 0x80130dfa), TOBN(0x306dc2b5, 0x8a02dcf5),
+           TOBN(0x48f06620, 0xfeb10fc0), TOBN(0x78d1e1d5, 0x5a57cf51)}},
+         {{TOBN(0xadef8c5a, 0x192ef710), TOBN(0x88afbd4b, 0x3b7431f9),
+           TOBN(0x7e1f7407, 0x64250c9e), TOBN(0x6e31318d, 0xb58bec07)},
+          {TOBN(0xfd4fc4b8, 0x24f89b4e), TOBN(0x65a5dd88, 0x48c36a2a),
+           TOBN(0x4f1eccff, 0xf024baa7), TOBN(0x22a21cf2, 0xcba94650)}},
+         {{TOBN(0x95d29dee, 0x42a554f7), TOBN(0x828983a5, 0x002ec4ba),
+           TOBN(0x8112a1f7, 0x8badb73d), TOBN(0x79ea8897, 0xa27c1839)},
+          {TOBN(0x8969a5a7, 0xd065fd83), TOBN(0xf49af791, 0xb262a0bc),
+           TOBN(0xfcdea8b6, 0xaf2b5127), TOBN(0x10e913e1, 0x564c2dbc)}},
+         {{TOBN(0x51239d14, 0xbc21ef51), TOBN(0xe51c3ceb, 0x4ce57292),
+           TOBN(0x795ff068, 0x47bbcc3b), TOBN(0x86b46e1e, 0xbd7e11e6)},
+          {TOBN(0x0ea6ba23, 0x80041ef4), TOBN(0xd72fe505, 0x6262342e),
+           TOBN(0x8abc6dfd, 0x31d294d4), TOBN(0xbbe017a2, 0x1278c2c9)}},
+         {{TOBN(0xb1fcfa09, 0xb389328a), TOBN(0x322fbc62, 0xd01771b5),
+           TOBN(0x04c0d063, 0x60b045bf), TOBN(0xdb652edc, 0x10e52d01)},
+          {TOBN(0x50ef932c, 0x03ec6627), TOBN(0xde1b3b2d, 0xc1ee50e3),
+           TOBN(0x5ab7bdc5, 0xdc37a90d), TOBN(0xfea67213, 0x31e33a96)}},
+         {{TOBN(0x6482b5cb, 0x4f2999aa), TOBN(0x38476cc6, 0xb8cbf0dd),
+           TOBN(0x93ebfacb, 0x173405bb), TOBN(0x15cdafe7, 0xe52369ec)},
+          {TOBN(0xd42d5ba4, 0xd935b7db), TOBN(0x648b6004, 0x1c99a4cd),
+           TOBN(0x785101bd, 0xa3b5545b), TOBN(0x4bf2c38a, 0x9dd67faf)}},
+         {{TOBN(0xb1aadc63, 0x4442449c), TOBN(0xe0e9921a, 0x33ad4fb8),
+           TOBN(0x5c552313, 0xaa686d82), TOBN(0xdee635fa, 0x465d866c)},
+          {TOBN(0xbc3c224a, 0x18ee6e8a), TOBN(0xeed748a6, 0xed42e02f),
+           TOBN(0xe70f930a, 0xd474cd08), TOBN(0x774ea6ec, 0xfff24adf)}},
+         {{TOBN(0x03e2de1c, 0xf3480d4a), TOBN(0xf0d8edc7, 0xbc8acf1a),
+           TOBN(0xf23e3303, 0x68295a9c), TOBN(0xfadd5f68, 0xc546a97d)},
+          {TOBN(0x895597ad, 0x96f8acb1), TOBN(0xbddd49d5, 0x671bdae2),
+           TOBN(0x16fcd528, 0x21dd43f4), TOBN(0xa5a45412, 0x6619141a)}}},
+        {{{TOBN(0x8ce9b6bf, 0xc360e25a), TOBN(0xe6425195, 0x075a1a78),
+           TOBN(0x9dc756a8, 0x481732f4), TOBN(0x83c0440f, 0x5432b57a)},
+          {TOBN(0xc670b3f1, 0xd720281f), TOBN(0x2205910e, 0xd135e051),
+           TOBN(0xded14b0e, 0xdb052be7), TOBN(0x697b3d27, 0xc568ea39)}},
+         {{TOBN(0x2e599b9a, 0xfb3ff9ed), TOBN(0x28c2e0ab, 0x17f6515c),
+           TOBN(0x1cbee4fd, 0x474da449), TOBN(0x071279a4, 0x4f364452)},
+          {TOBN(0x97abff66, 0x01fbe855), TOBN(0x3ee394e8, 0x5fda51c4),
+           TOBN(0x190385f6, 0x67597c0b), TOBN(0x6e9fccc6, 0xa27ee34b)}},
+         {{TOBN(0x0b89de93, 0x14092ebb), TOBN(0xf17256bd, 0x428e240c),
+           TOBN(0xcf89a7f3, 0x93d2f064), TOBN(0x4f57841e, 0xe1ed3b14)},
+          {TOBN(0x4ee14405, 0xe708d855), TOBN(0x856aae72, 0x03f1c3d0),
+           TOBN(0xc8e5424f, 0xbdd7eed5), TOBN(0x3333e4ef, 0x73ab4270)}},
+         {{TOBN(0x3bc77ade, 0xdda492f8), TOBN(0xc11a3aea, 0x78297205),
+           TOBN(0x5e89a3e7, 0x34931b4c), TOBN(0x17512e2e, 0x9f5694bb)},
+          {TOBN(0x5dc349f3, 0x177bf8b6), TOBN(0x232ea4ba, 0x08c7ff3e),
+           TOBN(0x9c4f9d16, 0xf511145d), TOBN(0xccf109a3, 0x33b379c3)}},
+         {{TOBN(0xe75e7a88, 0xa1f25897), TOBN(0x7ac6961f, 0xa1b5d4d8),
+           TOBN(0xe3e10773, 0x08f3ed5c), TOBN(0x208a54ec, 0x0a892dfb)},
+          {TOBN(0xbe826e19, 0x78660710), TOBN(0x0cf70a97, 0x237df2c8),
+           TOBN(0x418a7340, 0xed704da5), TOBN(0xa3eeb9a9, 0x08ca33fd)}},
+         {{TOBN(0x49d96233, 0x169bca96), TOBN(0x04d286d4, 0x2da6aafb),
+           TOBN(0xc09606ec, 0xa0c2fa94), TOBN(0x8869d0d5, 0x23ff0fb3)},
+          {TOBN(0xa99937e5, 0xd0150d65), TOBN(0xa92e2503, 0x240c14c9),
+           TOBN(0x656bf945, 0x108e2d49), TOBN(0x152a733a, 0xa2f59e2b)}},
+         {{TOBN(0xb4323d58, 0x8434a920), TOBN(0xc0af8e93, 0x622103c5),
+           TOBN(0x667518ef, 0x938dbf9a), TOBN(0xa1843073, 0x83a9cdf2)},
+          {TOBN(0x350a94aa, 0x5447ab80), TOBN(0xe5e5a325, 0xc75a3d61),
+           TOBN(0x74ba507f, 0x68411a9e), TOBN(0x10581fc1, 0x594f70c5)}},
+         {{TOBN(0x60e28570, 0x80eb24a9), TOBN(0x7bedfb4d, 0x488e0cfd),
+           TOBN(0x721ebbd7, 0xc259cdb8), TOBN(0x0b0da855, 0xbc6390a9)},
+          {TOBN(0x2b4d04db, 0xde314c70), TOBN(0xcdbf1fbc, 0x6c32e846),
+           TOBN(0x33833eab, 0xb162fc9e), TOBN(0x9939b48b, 0xb0dd3ab7)}},
+         {{TOBN(0x5aaa98a7, 0xcb0c9c8c), TOBN(0x75105f30, 0x81c4375c),
+           TOBN(0xceee5057, 0x5ef1c90f), TOBN(0xb31e065f, 0xc23a17bf)},
+          {TOBN(0x5364d275, 0xd4b6d45a), TOBN(0xd363f3ad, 0x62ec8996),
+           TOBN(0xb5d21239, 0x4391c65b), TOBN(0x84564765, 0xebb41b47)}},
+         {{TOBN(0x20d18ecc, 0x37107c78), TOBN(0xacff3b6b, 0x570c2a66),
+           TOBN(0x22f975d9, 0x9bd0d845), TOBN(0xef0a0c46, 0xba178fa0)},
+          {TOBN(0x1a419651, 0x76b6028e), TOBN(0xc49ec674, 0x248612d4),
+           TOBN(0x5b6ac4f2, 0x7338af55), TOBN(0x06145e62, 0x7bee5a36)}},
+         {{TOBN(0x33e95d07, 0xe75746b5), TOBN(0x1c1e1f6d, 0xc40c78be),
+           TOBN(0x967833ef, 0x222ff8e2), TOBN(0x4bedcf6a, 0xb49180ad)},
+          {TOBN(0x6b37e9c1, 0x3d7a4c8a), TOBN(0x2748887c, 0x6ddfe760),
+           TOBN(0xf7055123, 0xaa3a5bbc), TOBN(0x954ff225, 0x7bbb8e74)}},
+         {{TOBN(0xc42b8ab1, 0x97c3dfb9), TOBN(0x55a549b0, 0xcf168154),
+           TOBN(0xad6748e7, 0xc1b50692), TOBN(0x2775780f, 0x6fc5cbcb)},
+          {TOBN(0x4eab80b8, 0xe1c9d7c8), TOBN(0x8c69dae1, 0x3fdbcd56),
+           TOBN(0x47e6b4fb, 0x9969eace), TOBN(0x002f1085, 0xa705cb5a)}},
+         {{TOBN(0x4e23ca44, 0x6d3fea55), TOBN(0xb4ae9c86, 0xf4810568),
+           TOBN(0x47bfb91b, 0x2a62f27d), TOBN(0x60deb4c9, 0xd9bac28c)},
+          {TOBN(0xa892d894, 0x7de6c34c), TOBN(0x4ee68259, 0x4494587d),
+           TOBN(0x914ee14e, 0x1a3f8a5b), TOBN(0xbb113eaa, 0x28700385)}},
+         {{TOBN(0x81ca03b9, 0x2115b4c9), TOBN(0x7c163d38, 0x8908cad1),
+           TOBN(0xc912a118, 0xaa18179a), TOBN(0xe09ed750, 0x886e3081)},
+          {TOBN(0xa676e3fa, 0x26f516ca), TOBN(0x753cacf7, 0x8e732f91),
+           TOBN(0x51592aea, 0x833da8b4), TOBN(0xc626f42f, 0x4cbea8aa)}},
+         {{TOBN(0xef9dc899, 0xa7b56eaf), TOBN(0x00c0e52c, 0x34ef7316),
+           TOBN(0x5b1e4e24, 0xfe818a86), TOBN(0x9d31e20d, 0xc538be47)},
+          {TOBN(0x22eb932d, 0x3ed68974), TOBN(0xe44bbc08, 0x7c4e87c4),
+           TOBN(0x4121086e, 0x0dde9aef), TOBN(0x8e6b9cff, 0x134f4345)}},
+         {{TOBN(0x96892c1f, 0x711b0eb9), TOBN(0xb905f2c8, 0x780ab954),
+           TOBN(0xace26309, 0xa20792db), TOBN(0xec8ac9b3, 0x0684e126)},
+          {TOBN(0x486ad8b6, 0xb40a2447), TOBN(0x60121fc1, 0x9fe3fb24),
+           TOBN(0x5626fccf, 0x1a8e3b3f), TOBN(0x4e568622, 0x6ad1f394)}},
+         {{TOBN(0xda7aae0d, 0x196aa5a1), TOBN(0xe0df8c77, 0x1041b5fb),
+           TOBN(0x451465d9, 0x26b318b7), TOBN(0xc29b6e55, 0x7ab136e9)},
+          {TOBN(0x2c2ab48b, 0x71148463), TOBN(0xb5738de3, 0x64454a76),
+           TOBN(0x54ccf9a0, 0x5a03abe4), TOBN(0x377c0296, 0x0427d58e)}},
+         {{TOBN(0x73f5f0b9, 0x2bb39c1f), TOBN(0x14373f2c, 0xe608d8c5),
+           TOBN(0xdcbfd314, 0x00fbb805), TOBN(0xdf18fb20, 0x83afdcfb)},
+          {TOBN(0x81a57f42, 0x42b3523f), TOBN(0xe958532d, 0x87f650fb),
+           TOBN(0xaa8dc8b6, 0x8b0a7d7c), TOBN(0x1b75dfb7, 0x150166be)}},
+         {{TOBN(0x90e4f7c9, 0x2d7d1413), TOBN(0x67e2d6b5, 0x9834f597),
+           TOBN(0x4fd4f4f9, 0xa808c3e8), TOBN(0xaf8237e0, 0xd5281ec1)},
+          {TOBN(0x25ab5fdc, 0x84687cee), TOBN(0xc5ded6b1, 0xa5b26c09),
+           TOBN(0x8e4a5aec, 0xc8ea7650), TOBN(0x23b73e5c, 0x14cc417f)}},
+         {{TOBN(0x2bfb4318, 0x3037bf52), TOBN(0xb61e6db5, 0x78c725d7),
+           TOBN(0x8efd4060, 0xbbb3e5d7), TOBN(0x2e014701, 0xdbac488e)},
+          {TOBN(0xac75cf9a, 0x360aa449), TOBN(0xb70cfd05, 0x79634d08),
+           TOBN(0xa591536d, 0xfffb15ef), TOBN(0xb2c37582, 0xd07c106c)}},
+         {{TOBN(0xb4293fdc, 0xf50225f9), TOBN(0xc52e175c, 0xb0e12b03),
+           TOBN(0xf649c3ba, 0xd0a8bf64), TOBN(0x745a8fef, 0xeb8ae3c6)},
+          {TOBN(0x30d7e5a3, 0x58321bc3), TOBN(0xb1732be7, 0x0bc4df48),
+           TOBN(0x1f217993, 0xe9ea5058), TOBN(0xf7a71cde, 0x3e4fd745)}},
+         {{TOBN(0x86cc533e, 0x894c5bbb), TOBN(0x6915c7d9, 0x69d83082),
+           TOBN(0xa6aa2d05, 0x5815c244), TOBN(0xaeeee592, 0x49b22ce5)},
+          {TOBN(0x89e39d13, 0x78135486), TOBN(0x3a275c1f, 0x16b76f2f),
+           TOBN(0xdb6bcc1b, 0xe036e8f5), TOBN(0x4df69b21, 0x5e4709f5)}},
+         {{TOBN(0xa188b250, 0x2d0f39aa), TOBN(0x622118bb, 0x15a85947),
+           TOBN(0x2ebf520f, 0xfde0f4fa), TOBN(0xa40e9f29, 0x4860e539)},
+          {TOBN(0x7b6a51eb, 0x22b57f0f), TOBN(0x849a33b9, 0x7e80644a),
+           TOBN(0x50e5d16f, 0x1cf095fe), TOBN(0xd754b54e, 0xec55f002)}},
+         {{TOBN(0x5cfbbb22, 0x236f4a98), TOBN(0x0b0c59e9, 0x066800bb),
+           TOBN(0x4ac69a8f, 0x5a9a7774), TOBN(0x2b33f804, 0xd6bec948)},
+          {TOBN(0xb3729295, 0x32e6c466), TOBN(0x68956d0f, 0x4e599c73),
+           TOBN(0xa47a249f, 0x155c31cc), TOBN(0x24d80f0d, 0xe1ce284e)}},
+         {{TOBN(0xcd821dfb, 0x988baf01), TOBN(0xe6331a7d, 0xdbb16647),
+           TOBN(0x1eb8ad33, 0x094cb960), TOBN(0x593cca38, 0xc91bbca5)},
+          {TOBN(0x384aac8d, 0x26567456), TOBN(0x40fa0309, 0xc04b6490),
+           TOBN(0x97834cd6, 0xdab6c8f6), TOBN(0x68a7318d, 0x3f91e55f)}},
+         {{TOBN(0xa00fd04e, 0xfc4d3157), TOBN(0xb56f8ab2, 0x2bf3bdea),
+           TOBN(0x014f5648, 0x4fa57172), TOBN(0x948c5860, 0x450abdb3)},
+          {TOBN(0x342b5df0, 0x0ebd4f08), TOBN(0x3e5168cd, 0x0e82938e),
+           TOBN(0x7aedc1ce, 0xb0df5dd0), TOBN(0x6bbbc6d9, 0xe5732516)}},
+         {{TOBN(0xc7bfd486, 0x605daaa6), TOBN(0x46fd72b7, 0xbb9a6c9e),
+           TOBN(0xe4847fb1, 0xa124fb89), TOBN(0x75959cbd, 0xa2d8ffbc)},
+          {TOBN(0x42579f65, 0xc8a588ee), TOBN(0x368c92e6, 0xb80b499d),
+           TOBN(0xea4ef6cd, 0x999a5df1), TOBN(0xaa73bb7f, 0x936fe604)}},
+         {{TOBN(0xf347a70d, 0x6457d188), TOBN(0x86eda86b, 0x8b7a388b),
+           TOBN(0xb7cdff06, 0x0ccd6013), TOBN(0xbeb1b6c7, 0xd0053fb2)},
+          {TOBN(0x0b022387, 0x99240a9f), TOBN(0x1bbb384f, 0x776189b2),
+           TOBN(0x8695e71e, 0x9066193a), TOBN(0x2eb50097, 0x06ffac7e)}},
+         {{TOBN(0x0654a9c0, 0x4a7d2caa), TOBN(0x6f3fb3d1, 0xa5aaa290),
+           TOBN(0x835db041, 0xff476e8f), TOBN(0x540b8b0b, 0xc42295e4)},
+          {TOBN(0xa5c73ac9, 0x05e214f5), TOBN(0x9a74075a, 0x56a0b638),
+           TOBN(0x2e4b1090, 0xce9e680b), TOBN(0x57a5b479, 0x6b8d9afa)}},
+         {{TOBN(0x0dca48e7, 0x26bfe65c), TOBN(0x097e391c, 0x7290c307),
+           TOBN(0x683c462e, 0x6669e72e), TOBN(0xf505be1e, 0x062559ac)},
+          {TOBN(0x5fbe3ea1, 0xe3a3035a), TOBN(0x6431ebf6, 0x9cd50da8),
+           TOBN(0xfd169d5c, 0x1f6407f2), TOBN(0x8d838a95, 0x60fce6b8)}},
+         {{TOBN(0x2a2bfa7f, 0x650006f0), TOBN(0xdfd7dad3, 0x50c0fbb2),
+           TOBN(0x92452495, 0xccf9ad96), TOBN(0x183bf494, 0xd95635f9)},
+          {TOBN(0x02d5df43, 0x4a7bd989), TOBN(0x505385cc, 0xa5431095),
+           TOBN(0xdd98e67d, 0xfd43f53e), TOBN(0xd61e1a6c, 0x500c34a9)}},
+         {{TOBN(0x5a4b46c6, 0x4a8a3d62), TOBN(0x8469c4d0, 0x247743d2),
+           TOBN(0x2bb3a13d, 0x88f7e433), TOBN(0x62b23a10, 0x01be5849)},
+          {TOBN(0xe83596b4, 0xa63d1a4c), TOBN(0x454e7fea, 0x7d183f3e),
+           TOBN(0x643fce61, 0x17afb01c), TOBN(0x4e65e5e6, 0x1c4c3638)}},
+         {{TOBN(0x41d85ea1, 0xef74c45b), TOBN(0x2cfbfa66, 0xae328506),
+           TOBN(0x98b078f5, 0x3ada7da9), TOBN(0xd985fe37, 0xec752fbb)},
+          {TOBN(0xeece68fe, 0x5a0148b4), TOBN(0x6f9a55c7, 0x2d78136d),
+           TOBN(0x232dccc4, 0xd2b729ce), TOBN(0xa27e0dfd, 0x90aafbc4)}},
+         {{TOBN(0x96474452, 0x12b4603e), TOBN(0xa876c551, 0x6b706d14),
+           TOBN(0xdf145fcf, 0x69a9d412), TOBN(0xe2ab75b7, 0x2d479c34)},
+          {TOBN(0x12df9a76, 0x1a23ff97), TOBN(0xc6138992, 0x5d359d10),
+           TOBN(0x6e51c7ae, 0xfa835f22), TOBN(0x69a79cb1, 0xc0fcc4d9)}},
+         {{TOBN(0xf57f350d, 0x594cc7e1), TOBN(0x3079ca63, 0x3350ab79),
+           TOBN(0x226fb614, 0x9aff594a), TOBN(0x35afec02, 0x6d59a62b)},
+          {TOBN(0x9bee46f4, 0x06ed2c6e), TOBN(0x58da1735, 0x7d939a57),
+           TOBN(0x44c50402, 0x8fd1797e), TOBN(0xd8853e7c, 0x5ccea6ca)}},
+         {{TOBN(0x4065508d, 0xa35fcd5f), TOBN(0x8965df8c, 0x495ccaeb),
+           TOBN(0x0f2da850, 0x12e1a962), TOBN(0xee471b94, 0xc1cf1cc4)},
+          {TOBN(0xcef19bc8, 0x0a08fb75), TOBN(0x704958f5, 0x81de3591),
+           TOBN(0x2867f8b2, 0x3aef4f88), TOBN(0x8d749384, 0xea9f9a5f)}},
+         {{TOBN(0x1b385537, 0x8c9049f4), TOBN(0x5be948f3, 0x7b92d8b6),
+           TOBN(0xd96f725d, 0xb6e2bd6b), TOBN(0x37a222bc, 0x958c454d)},
+          {TOBN(0xe7c61abb, 0x8809bf61), TOBN(0x46f07fbc, 0x1346f18d),
+           TOBN(0xfb567a7a, 0xe87c0d1c), TOBN(0x84a461c8, 0x7ef3d07a)}},
+         {{TOBN(0x0a5adce6, 0xd9278d98), TOBN(0x24d94813, 0x9dfc73e1),
+           TOBN(0x4f3528b6, 0x054321c3), TOBN(0x2e03fdde, 0x692ea706)},
+          {TOBN(0x10e60619, 0x47b533c0), TOBN(0x1a8bc73f, 0x2ca3c055),
+           TOBN(0xae58d4b2, 0x1bb62b8f), TOBN(0xb2045a73, 0x584a24e3)}},
+         {{TOBN(0x3ab3d5af, 0xbd76e195), TOBN(0x478dd1ad, 0x6938a810),
+           TOBN(0x6ffab393, 0x6ee3d5cb), TOBN(0xdfb693db, 0x22b361e4)},
+          {TOBN(0xf9694496, 0x51dbf1a7), TOBN(0xcab4b4ef, 0x08a2e762),
+           TOBN(0xe8c92f25, 0xd39bba9a), TOBN(0x850e61bc, 0xf1464d96)}},
+         {{TOBN(0xb7e830e3, 0xdc09508b), TOBN(0xfaf6d2cf, 0x74317655),
+           TOBN(0x72606ceb, 0xdf690355), TOBN(0x48bb92b3, 0xd0c3ded6)},
+          {TOBN(0x65b75484, 0x5c7cf892), TOBN(0xf6cd7ac9, 0xd5d5f01f),
+           TOBN(0xc2c30a59, 0x96401d69), TOBN(0x91268650, 0xed921878)}},
+         {{TOBN(0x380bf913, 0xb78c558f), TOBN(0x43c0baeb, 0xc8afdaa9),
+           TOBN(0x377f61d5, 0x54f169d3), TOBN(0xf8da07e3, 0xae5ff20b)},
+          {TOBN(0xb676c49d, 0xa8a90ea8), TOBN(0x81c1ff2b, 0x83a29b21),
+           TOBN(0x383297ac, 0x2ad8d276), TOBN(0x3001122f, 0xba89f982)}},
+         {{TOBN(0xe1d794be, 0x6718e448), TOBN(0x246c1482, 0x7c3e6e13),
+           TOBN(0x56646ef8, 0x5d26b5ef), TOBN(0x80f5091e, 0x88069cdd)},
+          {TOBN(0xc5992e2f, 0x724bdd38), TOBN(0x02e915b4, 0x8471e8c7),
+           TOBN(0x96ff320a, 0x0d0ff2a9), TOBN(0xbf886487, 0x4384d1a0)}},
+         {{TOBN(0xbbe1e6a6, 0xc93f72d6), TOBN(0xd5f75d12, 0xcad800ea),
+           TOBN(0xfa40a09f, 0xe7acf117), TOBN(0x32c8cdd5, 0x7581a355)},
+          {TOBN(0x74221992, 0x7023c499), TOBN(0xa8afe5d7, 0x38ec3901),
+           TOBN(0x5691afcb, 0xa90e83f0), TOBN(0x41bcaa03, 0x0b8f8eac)}},
+         {{TOBN(0xe38b5ff9, 0x8d2668d5), TOBN(0x0715281a, 0x7ad81965),
+           TOBN(0x1bc8fc7c, 0x03c6ce11), TOBN(0xcbbee6e2, 0x8b650436)},
+          {TOBN(0x06b00fe8, 0x0cdb9808), TOBN(0x17d6e066, 0xfe3ed315),
+           TOBN(0x2e9d38c6, 0x4d0b5018), TOBN(0xab8bfd56, 0x844dcaef)}},
+         {{TOBN(0x42894a59, 0x513aed8b), TOBN(0xf77f3b6d, 0x314bd07a),
+           TOBN(0xbbdecb8f, 0x8e42b582), TOBN(0xf10e2fa8, 0xd2390fe6)},
+          {TOBN(0xefb95022, 0x62a2f201), TOBN(0x4d59ea50, 0x50ee32b0),
+           TOBN(0xd87f7728, 0x6da789a8), TOBN(0xcf98a2cf, 0xf79492c4)}},
+         {{TOBN(0xf9577239, 0x720943c2), TOBN(0xba044cf5, 0x3990b9d0),
+           TOBN(0x5aa8e823, 0x95f2884a), TOBN(0x834de6ed, 0x0278a0af)},
+          {TOBN(0xc8e1ee9a, 0x5f25bd12), TOBN(0x9259ceaa, 0x6f7ab271),
+           TOBN(0x7e6d97a2, 0x77d00b76), TOBN(0x5c0c6eea, 0xa437832a)}},
+         {{TOBN(0x5232c20f, 0x5606b81d), TOBN(0xabd7b375, 0x0d991ee5),
+           TOBN(0x4d2bfe35, 0x8632d951), TOBN(0x78f85146, 0x98ed9364)},
+          {TOBN(0x951873f0, 0xf30c3282), TOBN(0x0da8ac80, 0xa789230b),
+           TOBN(0x3ac7789c, 0x5398967f), TOBN(0xa69b8f7f, 0xbdda0fb5)}},
+         {{TOBN(0xe5db7717, 0x6add8545), TOBN(0x1b71cb66, 0x72c49b66),
+           TOBN(0xd8560739, 0x68421d77), TOBN(0x03840fe8, 0x83e3afea)},
+          {TOBN(0xb391dad5, 0x1ec69977), TOBN(0xae243fb9, 0x307f6726),
+           TOBN(0xc88ac87b, 0xe8ca160c), TOBN(0x5174cced, 0x4ce355f4)}},
+         {{TOBN(0x98a35966, 0xe58ba37d), TOBN(0xfdcc8da2, 0x7817335d),
+           TOBN(0x5b752830, 0x83fbc7bf), TOBN(0x68e419d4, 0xd9c96984)},
+          {TOBN(0x409a39f4, 0x02a40380), TOBN(0x88940faf, 0x1fe977bc),
+           TOBN(0xc640a94b, 0x8f8edea6), TOBN(0x1e22cd17, 0xed11547d)}},
+         {{TOBN(0xe28568ce, 0x59ffc3e2), TOBN(0x60aa1b55, 0xc1dee4e7),
+           TOBN(0xc67497c8, 0x837cb363), TOBN(0x06fb438a, 0x105a2bf2)},
+          {TOBN(0x30357ec4, 0x500d8e20), TOBN(0x1ad9095d, 0x0670db10),
+           TOBN(0x7f589a05, 0xc73b7cfd), TOBN(0xf544607d, 0x880d6d28)}},
+         {{TOBN(0x17ba93b1, 0xa20ef103), TOBN(0xad859130, 0x6ba6577b),
+           TOBN(0x65c91cf6, 0x6fa214a0), TOBN(0xd7d49c6c, 0x27990da5)},
+          {TOBN(0xecd9ec8d, 0x20bb569d), TOBN(0xbd4b2502, 0xeeffbc33),
+           TOBN(0x2056ca5a, 0x6bed0467), TOBN(0x7916a1f7, 0x5b63728c)}},
+         {{TOBN(0xd4f9497d, 0x53a4f566), TOBN(0x89734664, 0x97b56810),
+           TOBN(0xf8e1da74, 0x0494a621), TOBN(0x82546a93, 0x8d011c68)},
+          {TOBN(0x1f3acb19, 0xc61ac162), TOBN(0x52f8fa9c, 0xabad0d3e),
+           TOBN(0x15356523, 0xb4b7ea43), TOBN(0x5a16ad61, 0xae608125)}},
+         {{TOBN(0xb0bcb87f, 0x4faed184), TOBN(0x5f236b1d, 0x5029f45f),
+           TOBN(0xd42c7607, 0x0bc6b1fc), TOBN(0xc644324e, 0x68aefce3)},
+          {TOBN(0x8e191d59, 0x5c5d8446), TOBN(0xc0208077, 0x13ae1979),
+           TOBN(0xadcaee55, 0x3ba59cc7), TOBN(0x20ed6d6b, 0xa2cb81ba)}},
+         {{TOBN(0x0952ba19, 0xb6efcffc), TOBN(0x60f12d68, 0x97c0b87c),
+           TOBN(0x4ee2c7c4, 0x9caa30bc), TOBN(0x767238b7, 0x97fbff4e)},
+          {TOBN(0xebc73921, 0x501b5d92), TOBN(0x3279e3df, 0xc2a37737),
+           TOBN(0x9fc12bc8, 0x6d197543), TOBN(0xfa94dc6f, 0x0a40db4e)}},
+         {{TOBN(0x7392b41a, 0x530ccbbd), TOBN(0x87c82146, 0xea823525),
+           TOBN(0xa52f984c, 0x05d98d0c), TOBN(0x2ae57d73, 0x5ef6974c)},
+          {TOBN(0x9377f7bf, 0x3042a6dd), TOBN(0xb1a007c0, 0x19647a64),
+           TOBN(0xfaa9079a, 0x0cca9767), TOBN(0x3d81a25b, 0xf68f72d5)}},
+         {{TOBN(0x752067f8, 0xff81578e), TOBN(0x78622150, 0x9045447d),
+           TOBN(0xc0c22fcf, 0x0505aa6f), TOBN(0x1030f0a6, 0x6bed1c77)},
+          {TOBN(0x31f29f15, 0x1f0bd739), TOBN(0x2d7989c7, 0xe6debe85),
+           TOBN(0x5c070e72, 0x8e677e98), TOBN(0x0a817bd3, 0x06e81fd5)}},
+         {{TOBN(0xc110d830, 0xb0f2ac95), TOBN(0x48d0995a, 0xab20e64e),
+           TOBN(0x0f3e00e1, 0x7729cd9a), TOBN(0x2a570c20, 0xdd556946)},
+          {TOBN(0x912dbcfd, 0x4e86214d), TOBN(0x2d014ee2, 0xcf615498),
+           TOBN(0x55e2b1e6, 0x3530d76e), TOBN(0xc5135ae4, 0xfd0fd6d1)}},
+         {{TOBN(0x0066273a, 0xd4f3049f), TOBN(0xbb8e9893, 0xe7087477),
+           TOBN(0x2dba1ddb, 0x14c6e5fd), TOBN(0xdba37886, 0x51f57e6c)},
+          {TOBN(0x5aaee0a6, 0x5a72f2cf), TOBN(0x1208bfbf, 0x7bea5642),
+           TOBN(0xf5c6aa3b, 0x67872c37), TOBN(0xd726e083, 0x43f93224)}},
+         {{TOBN(0x1854daa5, 0x061f1658), TOBN(0xc0016df1, 0xdf0cd2b3),
+           TOBN(0xc2a3f23e, 0x833d50de), TOBN(0x73b681d2, 0xbbbd3017)},
+          {TOBN(0x2f046dc4, 0x3ac343c0), TOBN(0x9c847e7d, 0x85716421),
+           TOBN(0xe1e13c91, 0x0917eed4), TOBN(0x3fc9eebd, 0x63a1b9c6)}},
+         {{TOBN(0x0f816a72, 0x7fe02299), TOBN(0x6335ccc2, 0x294f3319),
+           TOBN(0x3820179f, 0x4745c5be), TOBN(0xe647b782, 0x922f066e)},
+          {TOBN(0xc22e49de, 0x02cafb8a), TOBN(0x299bc2ff, 0xfcc2eccc),
+           TOBN(0x9a8feea2, 0x6e0e8282), TOBN(0xa627278b, 0xfe893205)}},
+         {{TOBN(0xa7e19733, 0x7933e47b), TOBN(0xf4ff6b13, 0x2e766402),
+           TOBN(0xa4d8be0a, 0x98440d9f), TOBN(0x658f5c2f, 0x38938808)},
+          {TOBN(0x90b75677, 0xc95b3b3e), TOBN(0xfa044269, 0x3137b6ff),
+           TOBN(0x077b039b, 0x43c47c29), TOBN(0xcca95dd3, 0x8a6445b2)}},
+         {{TOBN(0x0b498ba4, 0x2333fc4c), TOBN(0x274f8e68, 0xf736a1b1),
+           TOBN(0x6ca348fd, 0x5f1d4b2e), TOBN(0x24d3be78, 0xa8f10199)},
+          {TOBN(0x8535f858, 0xca14f530), TOBN(0xa6e7f163, 0x5b982e51),
+           TOBN(0x847c8512, 0x36e1bf62), TOBN(0xf6a7c58e, 0x03448418)}},
+         {{TOBN(0x583f3703, 0xf9374ab6), TOBN(0x864f9195, 0x6e564145),
+           TOBN(0x33bc3f48, 0x22526d50), TOBN(0x9f323c80, 0x1262a496)},
+          {TOBN(0xaa97a7ae, 0x3f046a9a), TOBN(0x70da183e, 0xdf8a039a),
+           TOBN(0x5b68f71c, 0x52aa0ba6), TOBN(0x9be0fe51, 0x21459c2d)}},
+         {{TOBN(0xc1e17eb6, 0xcbc613e5), TOBN(0x33131d55, 0x497ea61c),
+           TOBN(0x2f69d39e, 0xaf7eded5), TOBN(0x73c2f434, 0xde6af11b)},
+          {TOBN(0x4ca52493, 0xa4a375fa), TOBN(0x5f06787c, 0xb833c5c2),
+           TOBN(0x814e091f, 0x3e6e71cf), TOBN(0x76451f57, 0x8b746666)}}},
+        {{{TOBN(0x80f9bdef, 0x694db7e0), TOBN(0xedca8787, 0xb9fcddc6),
+           TOBN(0x51981c34, 0x03b8dce1), TOBN(0x4274dcf1, 0x70e10ba1)},
+          {TOBN(0xf72743b8, 0x6def6d1a), TOBN(0xd25b1670, 0xebdb1866),
+           TOBN(0xc4491e8c, 0x050c6f58), TOBN(0x2be2b2ab, 0x87fbd7f5)}},
+         {{TOBN(0x3e0e5c9d, 0xd111f8ec), TOBN(0xbcc33f8d, 0xb7c4e760),
+           TOBN(0x702f9a91, 0xbd392a51), TOBN(0x7da4a795, 0xc132e92d)},
+          {TOBN(0x1a0b0ae3, 0x0bb1151b), TOBN(0x54febac8, 0x02e32251),
+           TOBN(0xea3a5082, 0x694e9e78), TOBN(0xe58ffec1, 0xe4fe40b8)}},
+         {{TOBN(0xf85592fc, 0xd1e0cf9e), TOBN(0xdea75f0d, 0xc0e7b2e8),
+           TOBN(0xc04215cf, 0xc135584e), TOBN(0x174fc727, 0x2f57092a)},
+          {TOBN(0xe7277877, 0xeb930bea), TOBN(0x504caccb, 0x5eb02a5a),
+           TOBN(0xf9fe08f7, 0xf5241b9b), TOBN(0xe7fb62f4, 0x8d5ca954)}},
+         {{TOBN(0xfbb8349d, 0x29c4120b), TOBN(0x9f94391f, 0xc0d0d915),
+           TOBN(0xc4074fa7, 0x5410ba51), TOBN(0xa66adbf6, 0x150a5911)},
+          {TOBN(0xc164543c, 0x34bfca38), TOBN(0xe0f27560, 0xb9e1ccfc),
+           TOBN(0x99da0f53, 0xe820219c), TOBN(0xe8234498, 0xc6b4997a)}},
+         {{TOBN(0xcfb88b76, 0x9d4c5423), TOBN(0x9e56eb10, 0xb0521c49),
+           TOBN(0x418e0b5e, 0xbe8700a1), TOBN(0x00cbaad6, 0xf93cb58a)},
+          {TOBN(0xe923fbde, 0xd92a5e67), TOBN(0xca4979ac, 0x1f347f11),
+           TOBN(0x89162d85, 0x6bc0585b), TOBN(0xdd6254af, 0xac3c70e3)}},
+         {{TOBN(0x7b23c513, 0x516e19e4), TOBN(0x56e2e847, 0xc5c4d593),
+           TOBN(0x9f727d73, 0x5ce71ef6), TOBN(0x5b6304a6, 0xf79a44c5)},
+          {TOBN(0x6638a736, 0x3ab7e433), TOBN(0x1adea470, 0xfe742f83),
+           TOBN(0xe054b854, 0x5b7fc19f), TOBN(0xf935381a, 0xba1d0698)}},
+         {{TOBN(0x546eab2d, 0x799e9a74), TOBN(0x96239e0e, 0xa949f729),
+           TOBN(0xca274c6b, 0x7090055a), TOBN(0x835142c3, 0x9020c9b0)},
+          {TOBN(0xa405667a, 0xa2e8807f), TOBN(0x29f2c085, 0x1aa3d39e),
+           TOBN(0xcc555d64, 0x42fc72f5), TOBN(0xe856e0e7, 0xfbeacb3c)}},
+         {{TOBN(0xb5504f9d, 0x918e4936), TOBN(0x65035ef6, 0xb2513982),
+           TOBN(0x0553a0c2, 0x6f4d9cb9), TOBN(0x6cb10d56, 0xbea85509)},
+          {TOBN(0x48d957b7, 0xa242da11), TOBN(0x16a4d3dd, 0x672b7268),
+           TOBN(0x3d7e637c, 0x8502a96b), TOBN(0x27c7032b, 0x730d463b)}},
+         {{TOBN(0xbdc02b18, 0xe4136a14), TOBN(0xbacf969d, 0x678e32bf),
+           TOBN(0xc98d89a3, 0xdd9c3c03), TOBN(0x7b92420a, 0x23becc4f)},
+          {TOBN(0xd4b41f78, 0xc64d565c), TOBN(0x9f969d00, 0x10f28295),
+           TOBN(0xec7f7f76, 0xb13d051a), TOBN(0x08945e1e, 0xa92da585)}},
+         {{TOBN(0x55366b7d, 0x5846426f), TOBN(0xe7d09e89, 0x247d441d),
+           TOBN(0x510b404d, 0x736fbf48), TOBN(0x7fa003d0, 0xe784bd7d)},
+          {TOBN(0x25f7614f, 0x17fd9596), TOBN(0x49e0e0a1, 0x35cb98db),
+           TOBN(0x2c65957b, 0x2e83a76a), TOBN(0x5d40da8d, 0xcddbe0f8)}},
+         {{TOBN(0xf2b8c405, 0x050bad24), TOBN(0x8918426d, 0xc2aa4823),
+           TOBN(0x2aeab3dd, 0xa38365a7), TOBN(0x72031717, 0x7c91b690)},
+          {TOBN(0x8b00d699, 0x60a94120), TOBN(0x478a255d, 0xe99eaeec),
+           TOBN(0xbf656a5f, 0x6f60aafd), TOBN(0xdfd7cb75, 0x5dee77b3)}},
+         {{TOBN(0x37f68bb4, 0xa595939d), TOBN(0x03556479, 0x28740217),
+           TOBN(0x8e740e7c, 0x84ad7612), TOBN(0xd89bc843, 0x9044695f)},
+          {TOBN(0xf7f3da5d, 0x85a9184d), TOBN(0x562563bb, 0x9fc0b074),
+           TOBN(0x06d2e6aa, 0xf88a888e), TOBN(0x612d8643, 0x161fbe7c)}},
+         {{TOBN(0x465edba7, 0xf64085e7), TOBN(0xb230f304, 0x29aa8511),
+           TOBN(0x53388426, 0xcda2d188), TOBN(0x90885735, 0x4b666649)},
+          {TOBN(0x6f02ff9a, 0x652f54f6), TOBN(0x65c82294, 0x5fae2bf0),
+           TOBN(0x7816ade0, 0x62f5eee3), TOBN(0xdcdbdf43, 0xfcc56d70)}},
+         {{TOBN(0x9fb3bba3, 0x54530bb2), TOBN(0xbde3ef77, 0xcb0869ea),
+           TOBN(0x89bc9046, 0x0b431163), TOBN(0x4d03d7d2, 0xe4819a35)},
+          {TOBN(0x33ae4f9e, 0x43b6a782), TOBN(0x216db307, 0x9c88a686),
+           TOBN(0x91dd88e0, 0x00ffedd9), TOBN(0xb280da9f, 0x12bd4840)}},
+         {{TOBN(0x32a7cb8a, 0x1635e741), TOBN(0xfe14008a, 0x78be02a7),
+           TOBN(0x3fafb334, 0x1b7ae030), TOBN(0x7fd508e7, 0x5add0ce9)},
+          {TOBN(0x72c83219, 0xd607ad51), TOBN(0x0f229c0a, 0x8d40964a),
+           TOBN(0x1be2c336, 0x1c878da2), TOBN(0xe0c96742, 0xeab2ab86)}},
+         {{TOBN(0x458f8691, 0x3e538cd7), TOBN(0xa7001f6c, 0x8e08ad53),
+           TOBN(0x52b8c6e6, 0xbf5d15ff), TOBN(0x548234a4, 0x011215dd)},
+          {TOBN(0xff5a9d2d, 0x3d5b4045), TOBN(0xb0ffeeb6, 0x4a904190),
+           TOBN(0x55a3aca4, 0x48607f8b), TOBN(0x8cbd665c, 0x30a0672a)}},
+         {{TOBN(0x87f834e0, 0x42583068), TOBN(0x02da2aeb, 0xf3f6e683),
+           TOBN(0x6b763e5d, 0x05c12248), TOBN(0x7230378f, 0x65a8aefc)},
+          {TOBN(0x93bd80b5, 0x71e8e5ca), TOBN(0x53ab041c, 0xb3b62524),
+           TOBN(0x1b860513, 0x6c9c552e), TOBN(0xe84d402c, 0xd5524e66)}},
+         {{TOBN(0xa37f3573, 0xf37f5937), TOBN(0xeb0f6c7d, 0xd1e4fca5),
+           TOBN(0x2965a554, 0xac8ab0fc), TOBN(0x17fbf56c, 0x274676ac)},
+          {TOBN(0x2e2f6bd9, 0xacf7d720), TOBN(0x41fc8f88, 0x10224766),
+           TOBN(0x517a14b3, 0x85d53bef), TOBN(0xdae327a5, 0x7d76a7d1)}},
+         {{TOBN(0x6ad0a065, 0xc4818267), TOBN(0x33aa189b, 0x37c1bbc1),
+           TOBN(0x64970b52, 0x27392a92), TOBN(0x21699a1c, 0x2d1535ea)},
+          {TOBN(0xcd20779c, 0xc2d7a7fd), TOBN(0xe3186059, 0x99c83cf2),
+           TOBN(0x9b69440b, 0x72c0b8c7), TOBN(0xa81497d7, 0x7b9e0e4d)}},
+         {{TOBN(0x515d5c89, 0x1f5f82dc), TOBN(0x9a7f67d7, 0x6361079e),
+           TOBN(0xa8da81e3, 0x11a35330), TOBN(0xe44990c4, 0x4b18be1b)},
+          {TOBN(0xc7d5ed95, 0xaf103e59), TOBN(0xece8aba7, 0x8dac9261),
+           TOBN(0xbe82b099, 0x9394b8d3), TOBN(0x6830f09a, 0x16adfe83)}},
+         {{TOBN(0x250a29b4, 0x88172d01), TOBN(0x8b20bd65, 0xcaff9e02),
+           TOBN(0xb8a7661e, 0xe8a6329a), TOBN(0x4520304d, 0xd3fce920)},
+          {TOBN(0xae45da1f, 0x2b47f7ef), TOBN(0xe07f5288, 0x5bffc540),
+           TOBN(0xf7997009, 0x3464f874), TOBN(0x2244c2cd, 0xa6fa1f38)}},
+         {{TOBN(0x43c41ac1, 0x94d7d9b1), TOBN(0x5bafdd82, 0xc82e7f17),
+           TOBN(0xdf0614c1, 0x5fda0fca), TOBN(0x74b043a7, 0xa8ae37ad)},
+          {TOBN(0x3ba6afa1, 0x9e71734c), TOBN(0x15d5437e, 0x9c450f2e),
+           TOBN(0x4a5883fe, 0x67e242b1), TOBN(0x5143bdc2, 0x2c1953c2)}},
+         {{TOBN(0x542b8b53, 0xfc5e8920), TOBN(0x363bf9a8, 0x9a9cee08),
+           TOBN(0x02375f10, 0xc3486e08), TOBN(0x2037543b, 0x8c5e70d2)},
+          {TOBN(0x7109bccc, 0x625640b4), TOBN(0xcbc1051e, 0x8bc62c3b),
+           TOBN(0xf8455fed, 0x803f26ea), TOBN(0x6badceab, 0xeb372424)}},
+         {{TOBN(0xa2a9ce7c, 0x6b53f5f9), TOBN(0x64246595, 0x1b176d99),
+           TOBN(0xb1298d36, 0xb95c081b), TOBN(0x53505bb8, 0x1d9a9ee6)},
+          {TOBN(0x3f6f9e61, 0xf2ba70b0), TOBN(0xd07e16c9, 0x8afad453),
+           TOBN(0x9f1694bb, 0xe7eb4a6a), TOBN(0xdfebced9, 0x3cb0bc8e)}},
+         {{TOBN(0x92d3dcdc, 0x53868c8b), TOBN(0x174311a2, 0x386107a6),
+           TOBN(0x4109e07c, 0x689b4e64), TOBN(0x30e4587f, 0x2df3dcb6)},
+          {TOBN(0x841aea31, 0x0811b3b2), TOBN(0x6144d41d, 0x0cce43ea),
+           TOBN(0x464c4581, 0x2a9a7803), TOBN(0xd03d371f, 0x3e158930)}},
+         {{TOBN(0xc676d7f2, 0xb1f3390b), TOBN(0x9f7a1b8c, 0xa5b61272),
+           TOBN(0x4ebebfc9, 0xc2e127a9), TOBN(0x4602500c, 0x5dd997bf)},
+          {TOBN(0x7f09771c, 0x4711230f), TOBN(0x058eb37c, 0x020f09c1),
+           TOBN(0xab693d4b, 0xfee5e38b), TOBN(0x9289eb1f, 0x4653cbc0)}},
+         {{TOBN(0xbecf46ab, 0xd51b9cf5), TOBN(0xd2aa9c02, 0x9f0121af),
+           TOBN(0x36aaf7d2, 0xe90dc274), TOBN(0x909e4ea0, 0x48b95a3c)},
+          {TOBN(0xe6b70496, 0x6f32dbdb), TOBN(0x672188a0, 0x8b030b3e),
+           TOBN(0xeeffe5b3, 0xcfb617e2), TOBN(0x87e947de, 0x7c82709e)}},
+         {{TOBN(0xa44d2b39, 0x1770f5a7), TOBN(0xe4d4d791, 0x0e44eb82),
+           TOBN(0x42e69d1e, 0x3f69712a), TOBN(0xbf11c4d6, 0xac6a820e)},
+          {TOBN(0xb5e7f3e5, 0x42c4224c), TOBN(0xd6b4e81c, 0x449d941c),
+           TOBN(0x5d72bd16, 0x5450e878), TOBN(0x6a61e28a, 0xee25ac54)}},
+         {{TOBN(0x33272094, 0xe6f1cd95), TOBN(0x7512f30d, 0x0d18673f),
+           TOBN(0x32f7a4ca, 0x5afc1464), TOBN(0x2f095656, 0x6bbb977b)},
+          {TOBN(0x586f47ca, 0xa8226200), TOBN(0x02c868ad, 0x1ac07369),
+           TOBN(0x4ef2b845, 0xc613acbe), TOBN(0x43d7563e, 0x0386054c)}},
+         {{TOBN(0x54da9dc7, 0xab952578), TOBN(0xb5423df2, 0x26e84d0b),
+           TOBN(0xa8b64eeb, 0x9b872042), TOBN(0xac205782, 0x5990f6df)},
+          {TOBN(0x4ff696eb, 0x21f4c77a), TOBN(0x1a79c3e4, 0xaab273af),
+           TOBN(0x29bc922e, 0x9436b3f1), TOBN(0xff807ef8, 0xd6d9a27a)}},
+         {{TOBN(0x82acea3d, 0x778f22a0), TOBN(0xfb10b2e8, 0x5b5e7469),
+           TOBN(0xc0b16980, 0x2818ee7d), TOBN(0x011afff4, 0xc91c1a2f)},
+          {TOBN(0x95a6d126, 0xad124418), TOBN(0x31c081a5, 0xe72e295f),
+           TOBN(0x36bb283a, 0xf2f4db75), TOBN(0xd115540f, 0x7acef462)}},
+         {{TOBN(0xc7f3a8f8, 0x33f6746c), TOBN(0x21e46f65, 0xfea990ca),
+           TOBN(0x915fd5c5, 0xcaddb0a9), TOBN(0xbd41f016, 0x78614555)},
+          {TOBN(0x346f4434, 0x426ffb58), TOBN(0x80559436, 0x14dbc204),
+           TOBN(0xf3dd20fe, 0x5a969b7f), TOBN(0x9d59e956, 0xe899a39a)}},
+         {{TOBN(0xf1b0971c, 0x8ad4cf4b), TOBN(0x03448860, 0x2ffb8fb8),
+           TOBN(0xf071ac3c, 0x65340ba4), TOBN(0x408d0596, 0xb27fd758)},
+          {TOBN(0xe7c78ea4, 0x98c364b0), TOBN(0xa4aac4a5, 0x051e8ab5),
+           TOBN(0xb9e1d560, 0x485d9002), TOBN(0x9acd518a, 0x88844455)}},
+         {{TOBN(0xe4ca688f, 0xd06f56c0), TOBN(0xa48af70d, 0xdf027972),
+           TOBN(0x691f0f04, 0x5e9a609d), TOBN(0xa9dd82cd, 0xee61270e)},
+          {TOBN(0x8903ca63, 0xa0ef18d3), TOBN(0x9fb7ee35, 0x3d6ca3bd),
+           TOBN(0xa7b4a09c, 0xabf47d03), TOBN(0x4cdada01, 0x1c67de8e)}},
+         {{TOBN(0x52003749, 0x9355a244), TOBN(0xe77fd2b6, 0x4f2151a9),
+           TOBN(0x695d6cf6, 0x66b4efcb), TOBN(0xc5a0cacf, 0xda2cfe25)},
+          {TOBN(0x104efe5c, 0xef811865), TOBN(0xf52813e8, 0x9ea5cc3d),
+           TOBN(0x855683dc, 0x40b58dbc), TOBN(0x0338ecde, 0x175fcb11)}},
+         {{TOBN(0xf9a05637, 0x74921592), TOBN(0xb4f1261d, 0xb9bb9d31),
+           TOBN(0x551429b7, 0x4e9c5459), TOBN(0xbe182e6f, 0x6ea71f53)},
+          {TOBN(0xd3a3b07c, 0xdfc50573), TOBN(0x9ba1afda, 0x62be8d44),
+           TOBN(0x9bcfd2cb, 0x52ab65d3), TOBN(0xdf11d547, 0xa9571802)}},
+         {{TOBN(0x099403ee, 0x02a2404a), TOBN(0x497406f4, 0x21088a71),
+           TOBN(0x99479409, 0x5004ae71), TOBN(0xbdb42078, 0xa812c362)},
+          {TOBN(0x2b72a30f, 0xd8828442), TOBN(0x283add27, 0xfcb5ed1c),
+           TOBN(0xf7c0e200, 0x66a40015), TOBN(0x3e3be641, 0x08b295ef)}},
+         {{TOBN(0xac127dc1, 0xe038a675), TOBN(0x729deff3, 0x8c5c6320),
+           TOBN(0xb7df8fd4, 0xa90d2c53), TOBN(0x9b74b0ec, 0x681e7cd3)},
+          {TOBN(0x5cb5a623, 0xdab407e5), TOBN(0xcdbd3615, 0x76b340c6),
+           TOBN(0xa184415a, 0x7d28392c), TOBN(0xc184c1d8, 0xe96f7830)}},
+         {{TOBN(0xc3204f19, 0x81d3a80f), TOBN(0xfde0c841, 0xc8e02432),
+           TOBN(0x78203b3e, 0x8149e0c1), TOBN(0x5904bdbb, 0x08053a73)},
+          {TOBN(0x30fc1dd1, 0x101b6805), TOBN(0x43c223bc, 0x49aa6d49),
+           TOBN(0x9ed67141, 0x7a174087), TOBN(0x311469a0, 0xd5997008)}},
+         {{TOBN(0xb189b684, 0x5e43fc61), TOBN(0xf3282375, 0xe0d3ab57),
+           TOBN(0x4fa34b67, 0xb1181da8), TOBN(0x621ed0b2, 0x99ee52b8)},
+          {TOBN(0x9b178de1, 0xad990676), TOBN(0xd51de67b, 0x56d54065),
+           TOBN(0x2a2c27c4, 0x7538c201), TOBN(0x33856ec8, 0x38a40f5c)}},
+         {{TOBN(0x2522fc15, 0xbe6cdcde), TOBN(0x1e603f33, 0x9f0c6f89),
+           TOBN(0x7994edc3, 0x103e30a6), TOBN(0x033a00db, 0x220c853e)},
+          {TOBN(0xd3cfa409, 0xf7bb7fd7), TOBN(0x70f8781e, 0x462d18f6),
+           TOBN(0xbbd82980, 0x687fe295), TOBN(0x6eef4c32, 0x595669f3)}},
+         {{TOBN(0x86a9303b, 0x2f7e85c3), TOBN(0x5fce4621, 0x71988f9b),
+           TOBN(0x5b935bf6, 0xc138acb5), TOBN(0x30ea7d67, 0x25661212)},
+          {TOBN(0xef1eb5f4, 0xe51ab9a2), TOBN(0x0587c98a, 0xae067c78),
+           TOBN(0xb3ce1b3c, 0x77ca9ca6), TOBN(0x2a553d4d, 0x54b5f057)}},
+         {{TOBN(0xc7898236, 0x4da29ec2), TOBN(0xdbdd5d13, 0xb9c57316),
+           TOBN(0xc57d6e6b, 0x2cd80d47), TOBN(0x80b460cf, 0xfe9e7391)},
+          {TOBN(0x98648cab, 0xf963c31e), TOBN(0x67f9f633, 0xcc4d32fd),
+           TOBN(0x0af42a9d, 0xfdf7c687), TOBN(0x55f292a3, 0x0b015ea7)}},
+         {{TOBN(0x89e468b2, 0xcd21ab3d), TOBN(0xe504f022, 0xc393d392),
+           TOBN(0xab21e1d4, 0xa5013af9), TOBN(0xe3283f78, 0xc2c28acb)},
+          {TOBN(0xf38b35f6, 0x226bf99f), TOBN(0xe8354274, 0x0e291e69),
+           TOBN(0x61673a15, 0xb20c162d), TOBN(0xc101dc75, 0xb04fbdbe)}},
+         {{TOBN(0x8323b4c2, 0x255bd617), TOBN(0x6c969693, 0x6c2a9154),
+           TOBN(0xc6e65860, 0x62679387), TOBN(0x8e01db0c, 0xb8c88e23)},
+          {TOBN(0x33c42873, 0x893a5559), TOBN(0x7630f04b, 0x47a3e149),
+           TOBN(0xb5d80805, 0xddcf35f8), TOBN(0x582ca080, 0x77dfe732)}},
+         {{TOBN(0x2c7156e1, 0x0b1894a0), TOBN(0x92034001, 0xd81c68c0),
+           TOBN(0xed225d00, 0xc8b115b5), TOBN(0x237f9c22, 0x83b907f2)},
+          {TOBN(0x0ea2f32f, 0x4470e2c0), TOBN(0xb725f7c1, 0x58be4e95),
+           TOBN(0x0f1dcafa, 0xb1ae5463), TOBN(0x59ed5187, 0x1ba2fc04)}},
+         {{TOBN(0xf6e0f316, 0xd0115d4d), TOBN(0x5180b12f, 0xd3691599),
+           TOBN(0x157e32c9, 0x527f0a41), TOBN(0x7b0b081d, 0xa8e0ecc0)},
+          {TOBN(0x6dbaaa8a, 0xbf4f0dd0), TOBN(0x99b289c7, 0x4d252696),
+           TOBN(0x79b7755e, 0xdbf864fe), TOBN(0x6974e2b1, 0x76cad3ab)}},
+         {{TOBN(0x35dbbee2, 0x06ddd657), TOBN(0xe7cbdd11, 0x2ff3a96d),
+           TOBN(0x88381968, 0x076be758), TOBN(0x2d737e72, 0x08c91f5d)},
+          {TOBN(0x5f83ab62, 0x86ec3776), TOBN(0x98aa649d, 0x945fa7a1),
+           TOBN(0xf477ec37, 0x72ef0933), TOBN(0x66f52b1e, 0x098c17b1)}},
+         {{TOBN(0x9eec58fb, 0xd803738b), TOBN(0x91aaade7, 0xe4e86aa4),
+           TOBN(0x6b1ae617, 0xa5b51492), TOBN(0x63272121, 0xbbc45974)},
+          {TOBN(0x7e0e28f0, 0x862c5129), TOBN(0x0a8f79a9, 0x3321a4a0),
+           TOBN(0xe26d1664, 0x5041c88f), TOBN(0x0571b805, 0x53233e3a)}},
+         {{TOBN(0xd1b0ccde, 0xc9520711), TOBN(0x55a9e4ed, 0x3c8b84bf),
+           TOBN(0x9426bd39, 0xa1fef314), TOBN(0x4f5f638e, 0x6eb93f2b)},
+          {TOBN(0xba2a1ed3, 0x2bf9341b), TOBN(0xd63c1321, 0x4d42d5a9),
+           TOBN(0xd2964a89, 0x316dc7c5), TOBN(0xd1759606, 0xca511851)}},
+         {{TOBN(0xd8a9201f, 0xf9e6ed35), TOBN(0xb7b5ee45, 0x6736925a),
+           TOBN(0x0a83fbbc, 0x99581af7), TOBN(0x3076bc40, 0x64eeb051)},
+          {TOBN(0x5511c98c, 0x02dec312), TOBN(0x270de898, 0x238dcb78),
+           TOBN(0x2cf4cf9c, 0x539c08c9), TOBN(0xa70cb65e, 0x38d3b06e)}},
+         {{TOBN(0xb12ec10e, 0xcfe57bbd), TOBN(0x82c7b656, 0x35a0c2b5),
+           TOBN(0xddc7d5cd, 0x161c67bd), TOBN(0xe32e8985, 0xae3a32cc)},
+          {TOBN(0x7aba9444, 0xd11a5529), TOBN(0xe964ed02, 0x2427fa1a),
+           TOBN(0x1528392d, 0x24a1770a), TOBN(0xa152ce2c, 0x12c72fcd)}},
+         {{TOBN(0x714553a4, 0x8ec07649), TOBN(0x18b4c290, 0x459dd453),
+           TOBN(0xea32b714, 0x7b64b110), TOBN(0xb871bfa5, 0x2e6f07a2)},
+          {TOBN(0xb67112e5, 0x9e2e3c9b), TOBN(0xfbf250e5, 0x44aa90f6),
+           TOBN(0xf77aedb8, 0xbd539006), TOBN(0x3b0cdf9a, 0xd172a66f)}},
+         {{TOBN(0xedf69fea, 0xf8c51187), TOBN(0x05bb67ec, 0x741e4da7),
+           TOBN(0x47df0f32, 0x08114345), TOBN(0x56facb07, 0xbb9792b1)},
+          {TOBN(0xf3e007e9, 0x8f6229e4), TOBN(0x62d103f4, 0x526fba0f),
+           TOBN(0x4f33bef7, 0xb0339d79), TOBN(0x9841357b, 0xb59bfec1)}},
+         {{TOBN(0xfa8dbb59, 0xc34e6705), TOBN(0xc3c7180b, 0x7fdaa84c),
+           TOBN(0xf95872fc, 0xa4108537), TOBN(0x8750cc3b, 0x932a3e5a)},
+          {TOBN(0xb61cc69d, 0xb7275d7d), TOBN(0xffa0168b, 0x2e59b2e9),
+           TOBN(0xca032abc, 0x6ecbb493), TOBN(0x1d86dbd3, 0x2c9082d8)}},
+         {{TOBN(0xae1e0b67, 0xe28ef5ba), TOBN(0x2c9a4699, 0xcb18e169),
+           TOBN(0x0ecd0e33, 0x1e6bbd20), TOBN(0x571b360e, 0xaf5e81d2)},
+          {TOBN(0xcd9fea58, 0x101c1d45), TOBN(0x6651788e, 0x18880452),
+           TOBN(0xa9972635, 0x1f8dd446), TOBN(0x44bed022, 0xe37281d0)}},
+         {{TOBN(0x094b2b2d, 0x33da525d), TOBN(0xf193678e, 0x13144fd8),
+           TOBN(0xb8ab5ba4, 0xf4c1061d), TOBN(0x4343b5fa, 0xdccbe0f4)},
+          {TOBN(0xa8702371, 0x63812713), TOBN(0x47bf6d2d, 0xf7611d93),
+           TOBN(0x46729b8c, 0xbd21e1d7), TOBN(0x7484d4e0, 0xd629e77d)}},
+         {{TOBN(0x830e6eea, 0x60dbac1f), TOBN(0x23d8c484, 0xda06a2f7),
+           TOBN(0x896714b0, 0x50ca535b), TOBN(0xdc8d3644, 0xebd97a9b)},
+          {TOBN(0x106ef9fa, 0xb12177b4), TOBN(0xf79bf464, 0x534d5d9c),
+           TOBN(0x2537a349, 0xa6ab360b), TOBN(0xc7c54253, 0xa00c744f)}},
+         {{TOBN(0xb3c7a047, 0xe5911a76), TOBN(0x61ffa5c8, 0x647f1ee7),
+           TOBN(0x15aed36f, 0x8f56ab42), TOBN(0x6a0d41b0, 0xa3ff9ac9)},
+          {TOBN(0x68f469f5, 0xcc30d357), TOBN(0xbe9adf81, 0x6b72be96),
+           TOBN(0x1cd926fe, 0x903ad461), TOBN(0x7e89e38f, 0xcaca441b)}},
+         {{TOBN(0xf0f82de5, 0xfacf69d4), TOBN(0x363b7e76, 0x4775344c),
+           TOBN(0x6894f312, 0xb2e36d04), TOBN(0x3c6cb4fe, 0x11d1c9a5)},
+          {TOBN(0x85d9c339, 0x4008e1f2), TOBN(0x5e9a85ea, 0x249f326c),
+           TOBN(0xdc35c60a, 0x678c5e06), TOBN(0xc08b944f, 0x9f86fba9)}},
+         {{TOBN(0xde40c02c, 0x89f71f0f), TOBN(0xad8f3e31, 0xff3da3c0),
+           TOBN(0x3ea5096b, 0x42125ded), TOBN(0x13879cbf, 0xa7379183)},
+          {TOBN(0x6f4714a5, 0x6b306a0b), TOBN(0x359c2ea6, 0x67646c5e),
+           TOBN(0xfacf8943, 0x07726368), TOBN(0x07a58935, 0x65ff431e)}},
+         {{TOBN(0x24d661d1, 0x68754ab0), TOBN(0x801fce1d, 0x6f429a76),
+           TOBN(0xc068a85f, 0xa58ce769), TOBN(0xedc35c54, 0x5d5eca2b)},
+          {TOBN(0xea31276f, 0xa3f660d1), TOBN(0xa0184ebe, 0xb8fc7167),
+           TOBN(0x0f20f21a, 0x1d8db0ae), TOBN(0xd96d095f, 0x56c35e12)}},
+         {{TOBN(0xedf402b5, 0xf8c2a25b), TOBN(0x1bb772b9, 0x059204b6),
+           TOBN(0x50cbeae2, 0x19b4e34c), TOBN(0x93109d80, 0x3fa0845a)},
+          {TOBN(0x54f7ccf7, 0x8ef59fb5), TOBN(0x3b438fe2, 0x88070963),
+           TOBN(0x9e28c659, 0x31f3ba9b), TOBN(0x9cc31b46, 0xead9da92)}},
+         {{TOBN(0x3c2f0ba9, 0xb733aa5f), TOBN(0xdece47cb, 0xf05af235),
+           TOBN(0xf8e3f715, 0xa2ac82a5), TOBN(0xc97ba641, 0x2203f18a)},
+          {TOBN(0xc3af5504, 0x09c11060), TOBN(0x56ea2c05, 0x46af512d),
+           TOBN(0xfac28daf, 0xf3f28146), TOBN(0x87fab43a, 0x959ef494)}}},
+        {{{TOBN(0x09891641, 0xd4c5105f), TOBN(0x1ae80f8e, 0x6d7fbd65),
+           TOBN(0x9d67225f, 0xbee6bdb0), TOBN(0x3b433b59, 0x7fc4d860)},
+          {TOBN(0x44e66db6, 0x93e85638), TOBN(0xf7b59252, 0xe3e9862f),
+           TOBN(0xdb785157, 0x665c32ec), TOBN(0x702fefd7, 0xae362f50)}},
+         {{TOBN(0x3754475d, 0x0fefb0c3), TOBN(0xd48fb56b, 0x46d7c35d),
+           TOBN(0xa070b633, 0x363798a4), TOBN(0xae89f3d2, 0x8fdb98e6)},
+          {TOBN(0x970b89c8, 0x6363d14c), TOBN(0x89817521, 0x67abd27d),
+           TOBN(0x9bf7d474, 0x44d5a021), TOBN(0xb3083baf, 0xcac72aee)}},
+         {{TOBN(0x389741de, 0xbe949a44), TOBN(0x638e9388, 0x546a4fa5),
+           TOBN(0x3fe6419c, 0xa0047bdc), TOBN(0x7047f648, 0xaaea57ca)},
+          {TOBN(0x54e48a90, 0x41fbab17), TOBN(0xda8e0b28, 0x576bdba2),
+           TOBN(0xe807eebc, 0xc72afddc), TOBN(0x07d3336d, 0xf42577bf)}},
+         {{TOBN(0x62a8c244, 0xbfe20925), TOBN(0x91c19ac3, 0x8fdce867),
+           TOBN(0x5a96a5d5, 0xdd387063), TOBN(0x61d587d4, 0x21d324f6)},
+          {TOBN(0xe87673a2, 0xa37173ea), TOBN(0x23848008, 0x53778b65),
+           TOBN(0x10f8441e, 0x05bab43e), TOBN(0xfa11fe12, 0x4621efbe)}},
+         {{TOBN(0x047b772e, 0x81685d7b), TOBN(0x23f27d81, 0xbf34a976),
+           TOBN(0xc27608e2, 0x915f48ef), TOBN(0x3b0b43fa, 0xa521d5c3)},
+          {TOBN(0x7613fb26, 0x63ca7284), TOBN(0x7f5729b4, 0x1d4db837),
+           TOBN(0x87b14898, 0x583b526b), TOBN(0x00b732a6, 0xbbadd3d1)}},
+         {{TOBN(0x8e02f426, 0x2048e396), TOBN(0x436b50b6, 0x383d9de4),
+           TOBN(0xf78d3481, 0x471e85ad), TOBN(0x8b01ea6a, 0xd005c8d6)},
+          {TOBN(0xd3c7afee, 0x97015c07), TOBN(0x46cdf1a9, 0x4e3ba2ae),
+           TOBN(0x7a42e501, 0x83d3a1d2), TOBN(0xd54b5268, 0xb541dff4)}},
+         {{TOBN(0x3f24cf30, 0x4e23e9bc), TOBN(0x4387f816, 0x126e3624),
+           TOBN(0x26a46a03, 0x3b0b6d61), TOBN(0xaf1bc845, 0x8b2d777c)},
+          {TOBN(0x25c401ba, 0x527de79c), TOBN(0x0e1346d4, 0x4261bbb6),
+           TOBN(0x4b96c44b, 0x287b4bc7), TOBN(0x658493c7, 0x5254562f)}},
+         {{TOBN(0x23f949fe, 0xb8a24a20), TOBN(0x17ebfed1, 0xf52ca53f),
+           TOBN(0x9b691bbe, 0xbcfb4853), TOBN(0x5617ff6b, 0x6278a05d)},
+          {TOBN(0x241b34c5, 0xe3c99ebd), TOBN(0xfc64242e, 0x1784156a),
+           TOBN(0x4206482f, 0x695d67df), TOBN(0xb967ce0e, 0xee27c011)}},
+         {{TOBN(0x65db3751, 0x21c80b5d), TOBN(0x2e7a563c, 0xa31ecca0),
+           TOBN(0xe56ffc4e, 0x5238a07e), TOBN(0x3d6c2966, 0x32ced854)},
+          {TOBN(0xe99d7d1a, 0xaf70b885), TOBN(0xafc3bad9, 0x2d686459),
+           TOBN(0x9c78bf46, 0x0cc8ba5b), TOBN(0x5a439519, 0x18955aa3)}},
+         {{TOBN(0xf8b517a8, 0x5fe4e314), TOBN(0xe60234d0, 0xfcb8906f),
+           TOBN(0xffe542ac, 0xf2061b23), TOBN(0x287e191f, 0x6b4cb59c)},
+          {TOBN(0x21857ddc, 0x09d877d8), TOBN(0x1c23478c, 0x14678941),
+           TOBN(0xbbf0c056, 0xb6e05ea4), TOBN(0x82da4b53, 0xb01594fe)}},
+         {{TOBN(0xf7526791, 0xfadb8608), TOBN(0x049e832d, 0x7b74cdf6),
+           TOBN(0xa43581cc, 0xc2b90a34), TOBN(0x73639eb8, 0x9360b10c)},
+          {TOBN(0x4fba331f, 0xe1e4a71b), TOBN(0x6ffd6b93, 0x8072f919),
+           TOBN(0x6e53271c, 0x65679032), TOBN(0x67206444, 0xf14272ce)}},
+         {{TOBN(0xc0f734a3, 0xb2335834), TOBN(0x9526205a, 0x90ef6860),
+           TOBN(0xcb8be717, 0x04e2bb0d), TOBN(0x2418871e, 0x02f383fa)},
+          {TOBN(0xd7177681, 0x4082c157), TOBN(0xcc914ad0, 0x29c20073),
+           TOBN(0xf186c1eb, 0xe587e728), TOBN(0x6fdb3c22, 0x61bcd5fd)}},
+         {{TOBN(0x30d014a6, 0xf2f9f8e9), TOBN(0x963ece23, 0x4fec49d2),
+           TOBN(0x862025c5, 0x9605a8d9), TOBN(0x39874445, 0x19f8929a)},
+          {TOBN(0x01b6ff65, 0x12bf476a), TOBN(0x598a64d8, 0x09cf7d91),
+           TOBN(0xd7ec7749, 0x93be56ca), TOBN(0x10899785, 0xcbb33615)}},
+         {{TOBN(0xb8a092fd, 0x02eee3ad), TOBN(0xa86b3d35, 0x30145270),
+           TOBN(0x323d98c6, 0x8512b675), TOBN(0x4b8bc785, 0x62ebb40f)},
+          {TOBN(0x7d301f54, 0x413f9cde), TOBN(0xa5e4fb4f, 0x2bab5664),
+           TOBN(0x1d2b252d, 0x1cbfec23), TOBN(0xfcd576bb, 0xe177120d)}},
+         {{TOBN(0x04427d3e, 0x83731a34), TOBN(0x2bb9028e, 0xed836e8e),
+           TOBN(0xb36acff8, 0xb612ca7c), TOBN(0xb88fe5ef, 0xd3d9c73a)},
+          {TOBN(0xbe2a6bc6, 0xedea4eb3), TOBN(0x43b93133, 0x488eec77),
+           TOBN(0xf41ff566, 0xb17106e1), TOBN(0x469e9172, 0x654efa32)}},
+         {{TOBN(0xb4480f04, 0x41c23fa3), TOBN(0xb4712eb0, 0xc1989a2e),
+           TOBN(0x3ccbba0f, 0x93a29ca7), TOBN(0x6e205c14, 0xd619428c)},
+          {TOBN(0x90db7957, 0xb3641686), TOBN(0x0432691d, 0x45ac8b4e),
+           TOBN(0x07a759ac, 0xf64e0350), TOBN(0x0514d89c, 0x9c972517)}},
+         {{TOBN(0x1701147f, 0xa8e67fc3), TOBN(0x9e2e0b8b, 0xab2085be),
+           TOBN(0xd5651824, 0xac284e57), TOBN(0x890d4325, 0x74893664)},
+          {TOBN(0x8a7c5e6e, 0xc55e68a3), TOBN(0xbf12e90b, 0x4339c85a),
+           TOBN(0x31846b85, 0xf922b655), TOBN(0x9a54ce4d, 0x0bf4d700)}},
+         {{TOBN(0xd7f4e83a, 0xf1a14295), TOBN(0x916f955c, 0xb285d4f9),
+           TOBN(0xe57bb0e0, 0x99ffdaba), TOBN(0x28a43034, 0xeab0d152)},
+          {TOBN(0x0a36ffa2, 0xb8a9cef8), TOBN(0x5517407e, 0xb9ec051a),
+           TOBN(0x9c796096, 0xea68e672), TOBN(0x853db5fb, 0xfb3c77fb)}},
+         {{TOBN(0x21474ba9, 0xe864a51a), TOBN(0x6c267699, 0x6e8a1b8b),
+           TOBN(0x7c823626, 0x94120a28), TOBN(0xe61e9a48, 0x8383a5db)},
+          {TOBN(0x7dd75003, 0x9f84216d), TOBN(0xab020d07, 0xad43cd85),
+           TOBN(0x9437ae48, 0xda12c659), TOBN(0x6449c2eb, 0xe65452ad)}},
+         {{TOBN(0xcc7c4c1c, 0x2cf9d7c1), TOBN(0x1320886a, 0xee95e5ab),
+           TOBN(0xbb7b9056, 0xbeae170c), TOBN(0xc8a5b250, 0xdbc0d662)},
+          {TOBN(0x4ed81432, 0xc11d2303), TOBN(0x7da66912, 0x1f03769f),
+           TOBN(0x3ac7a5fd, 0x84539828), TOBN(0x14dada94, 0x3bccdd02)}},
+         {{TOBN(0x8b84c321, 0x7ef6b0d1), TOBN(0x52a9477a, 0x7c933f22),
+           TOBN(0x5ef6728a, 0xfd440b82), TOBN(0x5c3bd859, 0x6ce4bd5e)},
+          {TOBN(0x918b80f5, 0xf22c2d3e), TOBN(0x368d5040, 0xb7bb6cc5),
+           TOBN(0xb66142a1, 0x2695a11c), TOBN(0x60ac583a, 0xeb19ea70)}},
+         {{TOBN(0x317cbb98, 0x0eab2437), TOBN(0x8cc08c55, 0x5e2654c8),
+           TOBN(0xfe2d6520, 0xe6d8307f), TOBN(0xe9f147f3, 0x57428993)},
+          {TOBN(0x5f9c7d14, 0xd2fd6cf1), TOBN(0xa3ecd064, 0x2d4fcbb0),
+           TOBN(0xad83fef0, 0x8e7341f7), TOBN(0x643f23a0, 0x3a63115c)}},
+         {{TOBN(0xd38a78ab, 0xe65ab743), TOBN(0xbf7c75b1, 0x35edc89c),
+           TOBN(0x3dd8752e, 0x530df568), TOBN(0xf85c4a76, 0xe308c682)},
+          {TOBN(0x4c9955b2, 0xe68acf37), TOBN(0xa544df3d, 0xab32af85),
+           TOBN(0x4b8ec3f5, 0xa25cf493), TOBN(0x4d8f2764, 0x1a622feb)}},
+         {{TOBN(0x7bb4f7aa, 0xf0dcbc49), TOBN(0x7de551f9, 0x70bbb45b),
+           TOBN(0xcfd0f3e4, 0x9f2ca2e5), TOBN(0xece58709, 0x1f5c76ef)},
+          {TOBN(0x32920edd, 0x167d79ae), TOBN(0x039df8a2, 0xfa7d7ec1),
+           TOBN(0xf46206c0, 0xbb30af91), TOBN(0x1ff5e2f5, 0x22676b59)}},
+         {{TOBN(0x11f4a039, 0x6ea51d66), TOBN(0x506c1445, 0x807d7a26),
+           TOBN(0x60da5705, 0x755a9b24), TOBN(0x8fc8cc32, 0x1f1a319e)},
+          {TOBN(0x83642d4d, 0x9433d67d), TOBN(0x7fa5cb8f, 0x6a7dd296),
+           TOBN(0x576591db, 0x9b7bde07), TOBN(0x13173d25, 0x419716fb)}},
+         {{TOBN(0xea30599d, 0xd5b340ff), TOBN(0xfc6b5297, 0xb0fe76c5),
+           TOBN(0x1c6968c8, 0xab8f5adc), TOBN(0xf723c7f5, 0x901c928d)},
+          {TOBN(0x4203c321, 0x9773d402), TOBN(0xdf7c6aa3, 0x1b51dd47),
+           TOBN(0x3d49e37a, 0x552be23c), TOBN(0x57febee8, 0x0b5a6e87)}},
+         {{TOBN(0xc5ecbee4, 0x7bd8e739), TOBN(0x79d44994, 0xae63bf75),
+           TOBN(0x168bd00f, 0x38fb8923), TOBN(0x75d48ee4, 0xd0533130)},
+          {TOBN(0x554f77aa, 0xdb5cdf33), TOBN(0x3396e896, 0x3c696769),
+           TOBN(0x2fdddbf2, 0xd3fd674e), TOBN(0xbbb8f6ee, 0x99d0e3e5)}},
+         {{TOBN(0x51b90651, 0xcbae2f70), TOBN(0xefc4bc05, 0x93aaa8eb),
+           TOBN(0x8ecd8689, 0xdd1df499), TOBN(0x1aee99a8, 0x22f367a5)},
+          {TOBN(0x95d485b9, 0xae8274c5), TOBN(0x6c14d445, 0x7d30b39c),
+           TOBN(0xbafea90b, 0xbcc1ef81), TOBN(0x7c5f317a, 0xa459a2ed)}},
+         {{TOBN(0x01211075, 0x4ef44227), TOBN(0xa17bed6e, 0xdc20f496),
+           TOBN(0x0cdfe424, 0x819853cd), TOBN(0x13793298, 0xf71e2ce7)},
+          {TOBN(0x3c1f3078, 0xdbbe307b), TOBN(0x6dd1c20e, 0x76ee9936),
+           TOBN(0x23ee4b57, 0x423caa20), TOBN(0x4ac3793b, 0x8efb840e)}},
+         {{TOBN(0x934438eb, 0xed1f8ca0), TOBN(0x3e546658, 0x4ebb25a2),
+           TOBN(0xc415af0e, 0xc069896f), TOBN(0xc13eddb0, 0x9a5aa43d)},
+          {TOBN(0x7a04204f, 0xd49eb8f6), TOBN(0xd0d5bdfc, 0xd74f1670),
+           TOBN(0x3697e286, 0x56fc0558), TOBN(0x10207371, 0x01cebade)}},
+         {{TOBN(0x5f87e690, 0x0647a82b), TOBN(0x908e0ed4, 0x8f40054f),
+           TOBN(0xa9f633d4, 0x79853803), TOBN(0x8ed13c9a, 0x4a28b252)},
+          {TOBN(0x3e2ef676, 0x1f460f64), TOBN(0x53930b9b, 0x36d06336),
+           TOBN(0x347073ac, 0x8fc4979b), TOBN(0x84380e0e, 0x5ecd5597)}},
+         {{TOBN(0xe3b22c6b, 0xc4fe3c39), TOBN(0xba4a8153, 0x6c7bebdf),
+           TOBN(0xf23ab6b7, 0x25693459), TOBN(0x53bc3770, 0x14922b11)},
+          {TOBN(0x4645c8ab, 0x5afc60db), TOBN(0xaa022355, 0x20b9f2a3),
+           TOBN(0x52a2954c, 0xce0fc507), TOBN(0x8c2731bb, 0x7ce1c2e7)}},
+         {{TOBN(0xf39608ab, 0x18a0339d), TOBN(0xac7a658d, 0x3735436c),
+           TOBN(0xb22c2b07, 0xcd992b4f), TOBN(0x4e83daec, 0xf40dcfd4)},
+          {TOBN(0x8a34c7be, 0x2f39ea3e), TOBN(0xef0c005f, 0xb0a56d2e),
+           TOBN(0x62731f6a, 0x6edd8038), TOBN(0x5721d740, 0x4e3cb075)}},
+         {{TOBN(0x1ea41511, 0xfbeeee1b), TOBN(0xd1ef5e73, 0xef1d0c05),
+           TOBN(0x42feefd1, 0x73c07d35), TOBN(0xe530a00a, 0x8a329493)},
+          {TOBN(0x5d55b7fe, 0xf15ebfb0), TOBN(0x549de03c, 0xd322491a),
+           TOBN(0xf7b5f602, 0x745b3237), TOBN(0x3632a3a2, 0x1ab6e2b6)}},
+         {{TOBN(0x0d3bba89, 0x0ef59f78), TOBN(0x0dfc6443, 0xc9e52b9a),
+           TOBN(0x1dc79699, 0x72631447), TOBN(0xef033917, 0xb3be20b1)},
+          {TOBN(0x0c92735d, 0xb1383948), TOBN(0xc1fc29a2, 0xc0dd7d7d),
+           TOBN(0x6485b697, 0x403ed068), TOBN(0x13bfaab3, 0xaac93bdc)}},
+         {{TOBN(0x410dc6a9, 0x0deeaf52), TOBN(0xb003fb02, 0x4c641c15),
+           TOBN(0x1384978c, 0x5bc504c4), TOBN(0x37640487, 0x864a6a77)},
+          {TOBN(0x05991bc6, 0x222a77da), TOBN(0x62260a57, 0x5e47eb11),
+           TOBN(0xc7af6613, 0xf21b432c), TOBN(0x22f3acc9, 0xab4953e9)}},
+         {{TOBN(0x52934922, 0x8e41d155), TOBN(0x4d024568, 0x3ac059ef),
+           TOBN(0xb0201755, 0x4d884411), TOBN(0xce8055cf, 0xa59a178f)},
+          {TOBN(0xcd77d1af, 0xf6204549), TOBN(0xa0a00a3e, 0xc7066759),
+           TOBN(0x471071ef, 0x0272c229), TOBN(0x009bcf6b, 0xd3c4b6b0)}},
+         {{TOBN(0x2a2638a8, 0x22305177), TOBN(0xd51d59df, 0x41645bbf),
+           TOBN(0xa81142fd, 0xc0a7a3c0), TOBN(0xa17eca6d, 0x4c7063ee)},
+          {TOBN(0x0bb887ed, 0x60d9dcec), TOBN(0xd6d28e51, 0x20ad2455),
+           TOBN(0xebed6308, 0xa67102ba), TOBN(0x042c3114, 0x8bffa408)}},
+         {{TOBN(0xfd099ac5, 0x8aa68e30), TOBN(0x7a6a3d7c, 0x1483513e),
+           TOBN(0xffcc6b75, 0xba2d8f0c), TOBN(0x54dacf96, 0x1e78b954)},
+          {TOBN(0xf645696f, 0xa4a9af89), TOBN(0x3a411940, 0x06ac98ec),
+           TOBN(0x41b8b3f6, 0x22a67a20), TOBN(0x2d0b1e0f, 0x99dec626)}},
+         {{TOBN(0x27c89192, 0x40be34e8), TOBN(0xc7162b37, 0x91907f35),
+           TOBN(0x90188ec1, 0xa956702b), TOBN(0xca132f7d, 0xdf93769c)},
+          {TOBN(0x3ece44f9, 0x0e2025b4), TOBN(0x67aaec69, 0x0c62f14c),
+           TOBN(0xad741418, 0x22e3cc11), TOBN(0xcf9b75c3, 0x7ff9a50e)}},
+         {{TOBN(0x02fa2b16, 0x4d348272), TOBN(0xbd99d61a, 0x9959d56d),
+           TOBN(0xbc4f19db, 0x18762916), TOBN(0xcc7cce50, 0x49c1ac80)},
+          {TOBN(0x4d59ebaa, 0xd846bd83), TOBN(0x8775a9dc, 0xa9202849),
+           TOBN(0x07ec4ae1, 0x6e1f4ca9), TOBN(0x27eb5875, 0xba893f11)}},
+         {{TOBN(0x00284d51, 0x662cc565), TOBN(0x82353a6b, 0x0db4138d),
+           TOBN(0xd9c7aaaa, 0xaa32a594), TOBN(0xf5528b5e, 0xa5669c47)},
+          {TOBN(0xf3220231, 0x2f23c5ff), TOBN(0xe3e8147a, 0x6affa3a1),
+           TOBN(0xfb423d5c, 0x202ddda0), TOBN(0x3d6414ac, 0x6b871bd4)}},
+         {{TOBN(0x586f82e1, 0xa51a168a), TOBN(0xb712c671, 0x48ae5448),
+           TOBN(0x9a2e4bd1, 0x76233eb8), TOBN(0x0188223a, 0x78811ca9)},
+          {TOBN(0x553c5e21, 0xf7c18de1), TOBN(0x7682e451, 0xb27bb286),
+           TOBN(0x3ed036b3, 0x0e51e929), TOBN(0xf487211b, 0xec9cb34f)}},
+         {{TOBN(0x0d094277, 0x0c24efc8), TOBN(0x0349fd04, 0xbef737a4),
+           TOBN(0x6d1c9dd2, 0x514cdd28), TOBN(0x29c135ff, 0x30da9521)},
+          {TOBN(0xea6e4508, 0xf78b0b6f), TOBN(0x176f5dd2, 0x678c143c),
+           TOBN(0x08148418, 0x4be21e65), TOBN(0x27f7525c, 0xe7df38c4)}},
+         {{TOBN(0x1fb70e09, 0x748ab1a4), TOBN(0x9cba50a0, 0x5efe4433),
+           TOBN(0x7846c7a6, 0x15f75af2), TOBN(0x2a7c2c57, 0x5ee73ea8)},
+          {TOBN(0x42e566a4, 0x3f0a449a), TOBN(0x45474c3b, 0xad90fc3d),
+           TOBN(0x7447be3d, 0x8b61d057), TOBN(0x3e9d1cf1, 0x3a4ec092)}},
+         {{TOBN(0x1603e453, 0xf380a6e6), TOBN(0x0b86e431, 0x9b1437c2),
+           TOBN(0x7a4173f2, 0xef29610a), TOBN(0x8fa729a7, 0xf03d57f7)},
+          {TOBN(0x3e186f6e, 0x6c9c217e), TOBN(0xbe1d3079, 0x91919524),
+           TOBN(0x92a62a70, 0x153d4fb1), TOBN(0x32ed3e34, 0xd68c2f71)}},
+         {{TOBN(0xd785027f, 0x9eb1a8b7), TOBN(0xbc37eb77, 0xc5b22fe8),
+           TOBN(0x466b34f0, 0xb9d6a191), TOBN(0x008a89af, 0x9a05f816)},
+          {TOBN(0x19b028fb, 0x7d42c10a), TOBN(0x7fe8c92f, 0x49b3f6b8),
+           TOBN(0x58907cc0, 0xa5a0ade3), TOBN(0xb3154f51, 0x559d1a7c)}},
+         {{TOBN(0x5066efb6, 0xd9790ed6), TOBN(0xa77a0cbc, 0xa6aa793b),
+           TOBN(0x1a915f3c, 0x223e042e), TOBN(0x1c5def04, 0x69c5874b)},
+          {TOBN(0x0e830078, 0x73b6c1da), TOBN(0x55cf85d2, 0xfcd8557a),
+           TOBN(0x0f7c7c76, 0x0460f3b1), TOBN(0x87052acb, 0x46e58063)}},
+         {{TOBN(0x09212b80, 0x907eae66), TOBN(0x3cb068e0, 0x4d721c89),
+           TOBN(0xa87941ae, 0xdd45ac1c), TOBN(0xde8d5c0d, 0x0daa0dbb)},
+          {TOBN(0xda421fdc, 0xe3502e6e), TOBN(0xc8944201, 0x4d89a084),
+           TOBN(0x7307ba5e, 0xf0c24bfb), TOBN(0xda212beb, 0x20bde0ef)}},
+         {{TOBN(0xea2da24b, 0xf82ce682), TOBN(0x058d3816, 0x07f71fe4),
+           TOBN(0x35a02462, 0x5ffad8de), TOBN(0xcd7b05dc, 0xaadcefab)},
+          {TOBN(0xd442f8ed, 0x1d9f54ec), TOBN(0x8be3d618, 0xb2d3b5ca),
+           TOBN(0xe2220ed0, 0xe06b2ce2), TOBN(0x82699a5f, 0x1b0da4c0)}},
+         {{TOBN(0x3ff106f5, 0x71c0c3a7), TOBN(0x8f580f5a, 0x0d34180c),
+           TOBN(0x4ebb120e, 0x22d7d375), TOBN(0x5e5782cc, 0xe9513675)},
+          {TOBN(0x2275580c, 0x99c82a70), TOBN(0xe8359fbf, 0x15ea8c4c),
+           TOBN(0x53b48db8, 0x7b415e70), TOBN(0xaacf2240, 0x100c6014)}},
+         {{TOBN(0x9faaccf5, 0xe4652f1d), TOBN(0xbd6fdd2a, 0xd56157b2),
+           TOBN(0xa4f4fb1f, 0x6261ec50), TOBN(0x244e55ad, 0x476bcd52)},
+          {TOBN(0x881c9305, 0x047d320b), TOBN(0x1ca983d5, 0x6181263f),
+           TOBN(0x354e9a44, 0x278fb8ee), TOBN(0xad2dbc0f, 0x396e4964)}},
+         {{TOBN(0x723f3aa2, 0x9268b3de), TOBN(0x0d1ca29a, 0xe6e0609a),
+           TOBN(0x794866aa, 0x6cf44252), TOBN(0x0b59f3e3, 0x01af87ed)},
+          {TOBN(0xe234e5ff, 0x7f4a6c51), TOBN(0xa8768fd2, 0x61dc2f7e),
+           TOBN(0xdafc7332, 0x0a94d81f), TOBN(0xd7f84282, 0x06938ce1)}},
+         {{TOBN(0xae0b3c0e, 0x0546063e), TOBN(0x7fbadcb2, 0x5d61abc6),
+           TOBN(0xd5d7a2c9, 0x369ac400), TOBN(0xa5978d09, 0xae67d10c)},
+          {TOBN(0x290f211e, 0x4f85eaac), TOBN(0xe61e2ad1, 0xfacac681),
+           TOBN(0xae125225, 0x388384cd), TOBN(0xa7fb68e9, 0xccfde30f)}},
+         {{TOBN(0x7a59b936, 0x3daed4c2), TOBN(0x80a9aa40, 0x2606f789),
+           TOBN(0xb40c1ea5, 0xf6a6d90a), TOBN(0x948364d3, 0x514d5885)},
+          {TOBN(0x062ebc60, 0x70985182), TOBN(0xa6db5b0e, 0x33310895),
+           TOBN(0x64a12175, 0xe329c2f5), TOBN(0xc5f25bd2, 0x90ea237e)}},
+         {{TOBN(0x7915c524, 0x2d0a4c23), TOBN(0xeb5d26e4, 0x6bb3cc52),
+           TOBN(0x369a9116, 0xc09e2c92), TOBN(0x0c527f92, 0xcf182cf8)},
+          {TOBN(0x9e591938, 0x2aede0ac), TOBN(0xb2922208, 0x6cc34939),
+           TOBN(0x3c9d8962, 0x99a34361), TOBN(0x3c81836d, 0xc1905fe6)}},
+         {{TOBN(0x4bfeb57f, 0xa001ec5a), TOBN(0xe993f5bb, 0xa0dc5dba),
+           TOBN(0x47884109, 0x724a1380), TOBN(0x8a0369ab, 0x32fe9a04)},
+          {TOBN(0xea068d60, 0x8c927db8), TOBN(0xbf5f37cf, 0x94655741),
+           TOBN(0x47d402a2, 0x04b6c7ea), TOBN(0x4551c295, 0x6af259cb)}},
+         {{TOBN(0x698b71e7, 0xed77ee8b), TOBN(0xbddf7bd0, 0xf309d5c7),
+           TOBN(0x6201c22c, 0x34e780ca), TOBN(0xab04f7d8, 0x4c295ef4)},
+          {TOBN(0x1c947294, 0x4313a8ce), TOBN(0xe532e4ac, 0x92ca4cfe),
+           TOBN(0x89738f80, 0xd0a7a97a), TOBN(0xec088c88, 0xa580fd5b)}},
+         {{TOBN(0x612b1ecc, 0x42ce9e51), TOBN(0x8f9840fd, 0xb25fdd2a),
+           TOBN(0x3cda78c0, 0x01e7f839), TOBN(0x546b3d3a, 0xece05480)},
+          {TOBN(0x271719a9, 0x80d30916), TOBN(0x45497107, 0x584c20c4),
+           TOBN(0xaf8f9478, 0x5bc78608), TOBN(0x28c7d484, 0x277e2a4c)}},
+         {{TOBN(0xfce01767, 0x88a2ffe4), TOBN(0xdc506a35, 0x28e169a5),
+           TOBN(0x0ea10861, 0x7af9c93a), TOBN(0x1ed24361, 0x03fa0e08)},
+          {TOBN(0x96eaaa92, 0xa3d694e7), TOBN(0xc0f43b4d, 0xef50bc74),
+           TOBN(0xce6aa58c, 0x64114db4), TOBN(0x8218e8ea, 0x7c000fd4)}},
+         {{TOBN(0xac815dfb, 0x185f8844), TOBN(0xcd7e90cb, 0x1557abfb),
+           TOBN(0x23d16655, 0xafbfecdf), TOBN(0x80f3271f, 0x085cac4a)},
+          {TOBN(0x7fc39aa7, 0xd0e62f47), TOBN(0x88d519d1, 0x460a48e5),
+           TOBN(0x59559ac4, 0xd28f101e), TOBN(0x7981d9e9, 0xca9ae816)}},
+         {{TOBN(0x5c38652c, 0x9ac38203), TOBN(0x86eaf87f, 0x57657fe5),
+           TOBN(0x568fc472, 0xe21f5416), TOBN(0x2afff39c, 0xe7e597b5)},
+          {TOBN(0x3adbbb07, 0x256d4eab), TOBN(0x22598692, 0x8285ab89),
+           TOBN(0x35f8112a, 0x041caefe), TOBN(0x95df02e3, 0xa5064c8b)}},
+         {{TOBN(0x4d63356e, 0xc7004bf3), TOBN(0x230a08f4, 0xdb83c7de),
+           TOBN(0xca27b270, 0x8709a7b7), TOBN(0x0d1c4cc4, 0xcb9abd2d)},
+          {TOBN(0x8a0bc66e, 0x7550fee8), TOBN(0x369cd4c7, 0x9cf7247e),
+           TOBN(0x75562e84, 0x92b5b7e7), TOBN(0x8fed0da0, 0x5802af7b)}},
+         {{TOBN(0x6a7091c2, 0xe48fb889), TOBN(0x26882c13, 0x7b8a9d06),
+           TOBN(0xa2498663, 0x1b82a0e2), TOBN(0x844ed736, 0x3518152d)},
+          {TOBN(0x282f476f, 0xd86e27c7), TOBN(0xa04edaca, 0x04afefdc),
+           TOBN(0x8b256ebc, 0x6119e34d), TOBN(0x56a413e9, 0x0787d78b)}}},
+        {{{TOBN(0x82ee061d, 0x5a74be50), TOBN(0xe41781c4, 0xdea16ff5),
+           TOBN(0xe0b0c81e, 0x99bfc8a2), TOBN(0x624f4d69, 0x0b547e2d)},
+          {TOBN(0x3a83545d, 0xbdcc9ae4), TOBN(0x2573dbb6, 0x409b1e8e),
+           TOBN(0x482960c4, 0xa6c93539), TOBN(0xf01059ad, 0x5ae18798)}},
+         {{TOBN(0x715c9f97, 0x3112795f), TOBN(0xe8244437, 0x984e6ee1),
+           TOBN(0x55cb4858, 0xecb66bcd), TOBN(0x7c136735, 0xabaffbee)},
+          {TOBN(0x54661595, 0x5dbec38e), TOBN(0x51c0782c, 0x388ad153),
+           TOBN(0x9ba4c53a, 0xc6e0952f), TOBN(0x27e6782a, 0x1b21dfa8)}},
+         {{TOBN(0x682f903d, 0x4ed2dbc2), TOBN(0x0eba59c8, 0x7c3b2d83),
+           TOBN(0x8e9dc84d, 0x9c7e9335), TOBN(0x5f9b21b0, 0x0eb226d7)},
+          {TOBN(0xe33bd394, 0xaf267bae), TOBN(0xaa86cc25, 0xbe2e15ae),
+           TOBN(0x4f0bf67d, 0x6a8ec500), TOBN(0x5846aa44, 0xf9630658)}},
+         {{TOBN(0xfeb09740, 0xe2c2bf15), TOBN(0x627a2205, 0xa9e99704),
+           TOBN(0xec8d73d0, 0xc2fbc565), TOBN(0x223eed8f, 0xc20c8de8)},
+          {TOBN(0x1ee32583, 0xa8363b49), TOBN(0x1a0b6cb9, 0xc9c2b0a6),
+           TOBN(0x49f7c3d2, 0x90dbc85c), TOBN(0xa8dfbb97, 0x1ef4c1ac)}},
+         {{TOBN(0xafb34d4c, 0x65c7c2ab), TOBN(0x1d4610e7, 0xe2c5ea84),
+           TOBN(0x893f6d1b, 0x973c4ab5), TOBN(0xa3cdd7e9, 0x945ba5c4)},
+          {TOBN(0x60514983, 0x064417ee), TOBN(0x1459b23c, 0xad6bdf2b),
+           TOBN(0x23b2c341, 0x5cf726c3), TOBN(0x3a829635, 0x32d6354a)}},
+         {{TOBN(0x294f901f, 0xab192c18), TOBN(0xec5fcbfe, 0x7030164f),
+           TOBN(0xe2e2fcb7, 0xe2246ba6), TOBN(0x1e7c88b3, 0x221a1a0c)},
+          {TOBN(0x72c7dd93, 0xc92d88c5), TOBN(0x41c2148e, 0x1106fb59),
+           TOBN(0x547dd4f5, 0xa0f60f14), TOBN(0xed9b52b2, 0x63960f31)}},
+         {{TOBN(0x6c8349eb, 0xb0a5b358), TOBN(0xb154c5c2, 0x9e7e2ed6),
+           TOBN(0xcad5eccf, 0xeda462db), TOBN(0xf2d6dbe4, 0x2de66b69)},
+          {TOBN(0x426aedf3, 0x8665e5b2), TOBN(0x488a8513, 0x7b7f5723),
+           TOBN(0x15cc43b3, 0x8bcbb386), TOBN(0x27ad0af3, 0xd791d879)}},
+         {{TOBN(0xc16c236e, 0x846e364f), TOBN(0x7f33527c, 0xdea50ca0),
+           TOBN(0xc4810775, 0x0926b86d), TOBN(0x6c2a3609, 0x0598e70c)},
+          {TOBN(0xa6755e52, 0xf024e924), TOBN(0xe0fa07a4, 0x9db4afca),
+           TOBN(0x15c3ce7d, 0x66831790), TOBN(0x5b4ef350, 0xa6cbb0d6)}},
+         {{TOBN(0x2c4aafc4, 0xb6205969), TOBN(0x42563f02, 0xf6c7854f),
+           TOBN(0x016aced5, 0x1d983b48), TOBN(0xfeb356d8, 0x99949755)},
+          {TOBN(0x8c2a2c81, 0xd1a39bd7), TOBN(0x8f44340f, 0xe6934ae9),
+           TOBN(0x148cf91c, 0x447904da), TOBN(0x7340185f, 0x0f51a926)}},
+         {{TOBN(0x2f8f00fb, 0x7409ab46), TOBN(0x057e78e6, 0x80e289b2),
+           TOBN(0x03e5022c, 0xa888e5d1), TOBN(0x3c87111a, 0x9dede4e2)},
+          {TOBN(0x5b9b0e1c, 0x7809460b), TOBN(0xe751c852, 0x71c9abc7),
+           TOBN(0x8b944e28, 0xc7cc1dc9), TOBN(0x4f201ffa, 0x1d3cfa08)}},
+         {{TOBN(0x02fc905c, 0x3e6721ce), TOBN(0xd52d70da, 0xd0b3674c),
+           TOBN(0x5dc2e5ca, 0x18810da4), TOBN(0xa984b273, 0x5c69dd99)},
+          {TOBN(0x63b92527, 0x84de5ca4), TOBN(0x2f1c9872, 0xc852dec4),
+           TOBN(0x18b03593, 0xc2e3de09), TOBN(0x19d70b01, 0x9813dc2f)}},
+         {{TOBN(0x42806b2d, 0xa6dc1d29), TOBN(0xd3030009, 0xf871e144),
+           TOBN(0xa1feb333, 0xaaf49276), TOBN(0xb5583b9e, 0xc70bc04b)},
+          {TOBN(0x1db0be78, 0x95695f20), TOBN(0xfc841811, 0x89d012b5),
+           TOBN(0x6409f272, 0x05f61643), TOBN(0x40d34174, 0xd5883128)}},
+         {{TOBN(0xd79196f5, 0x67419833), TOBN(0x6059e252, 0x863b7b08),
+           TOBN(0x84da1817, 0x1c56700c), TOBN(0x5758ee56, 0xb28d3ec4)},
+          {TOBN(0x7da2771d, 0x013b0ea6), TOBN(0xfddf524b, 0x54c5e9b9),
+           TOBN(0x7df4faf8, 0x24305d80), TOBN(0x58f5c1bf, 0x3a97763f)}},
+         {{TOBN(0xa5af37f1, 0x7c696042), TOBN(0xd4cba22c, 0x4a2538de),
+           TOBN(0x211cb995, 0x9ea42600), TOBN(0xcd105f41, 0x7b069889)},
+          {TOBN(0xb1e1cf19, 0xddb81e74), TOBN(0x472f2d89, 0x5157b8ca),
+           TOBN(0x086fb008, 0xee9db885), TOBN(0x365cd570, 0x0f26d131)}},
+         {{TOBN(0x284b02bb, 0xa2be7053), TOBN(0xdcbbf7c6, 0x7ab9a6d6),
+           TOBN(0x4425559c, 0x20f7a530), TOBN(0x961f2dfa, 0x188767c8)},
+          {TOBN(0xe2fd9435, 0x70dc80c4), TOBN(0x104d6b63, 0xf0784120),
+           TOBN(0x7f592bc1, 0x53567122), TOBN(0xf6bc1246, 0xf688ad77)}},
+         {{TOBN(0x05214c05, 0x0f15dde9), TOBN(0xa47a76a8, 0x0d5f2b82),
+           TOBN(0xbb254d30, 0x62e82b62), TOBN(0x11a05fe0, 0x3ec955ee)},
+          {TOBN(0x7eaff46e, 0x9d529b36), TOBN(0x55ab1301, 0x8f9e3df6),
+           TOBN(0xc463e371, 0x99317698), TOBN(0xfd251438, 0xccda47ad)}},
+         {{TOBN(0xca9c3547, 0x23d695ea), TOBN(0x48ce626e, 0x16e589b5),
+           TOBN(0x6b5b64c7, 0xb187d086), TOBN(0xd02e1794, 0xb2207948)},
+          {TOBN(0x8b58e98f, 0x7198111d), TOBN(0x90ca6305, 0xdcf9c3cc),
+           TOBN(0x5691fe72, 0xf34089b0), TOBN(0x60941af1, 0xfc7c80ff)}},
+         {{TOBN(0xa09bc0a2, 0x22eb51e5), TOBN(0xc0bb7244, 0xaa9cf09a),
+           TOBN(0x36a8077f, 0x80159f06), TOBN(0x8b5c989e, 0xdddc560e)},
+          {TOBN(0x19d2f316, 0x512e1f43), TOBN(0x02eac554, 0xad08ff62),
+           TOBN(0x012ab84c, 0x07d20b4e), TOBN(0x37d1e115, 0xd6d4e4e1)}},
+         {{TOBN(0xb6443e1a, 0xab7b19a8), TOBN(0xf08d067e, 0xdef8cd45),
+           TOBN(0x63adf3e9, 0x685e03da), TOBN(0xcf15a10e, 0x4792b916)},
+          {TOBN(0xf44bcce5, 0xb738a425), TOBN(0xebe131d5, 0x9636b2fd),
+           TOBN(0x94068841, 0x7850d605), TOBN(0x09684eaa, 0xb40d749d)}},
+         {{TOBN(0x8c3c669c, 0x72ba075b), TOBN(0x89f78b55, 0xba469015),
+           TOBN(0x5706aade, 0x3e9f8ba8), TOBN(0x6d8bd565, 0xb32d7ed7)},
+          {TOBN(0x25f4e63b, 0x805f08d6), TOBN(0x7f48200d, 0xc3bcc1b5),
+           TOBN(0x4e801968, 0xb025d847), TOBN(0x74afac04, 0x87cbe0a8)}},
+         {{TOBN(0x43ed2c2b, 0x7e63d690), TOBN(0xefb6bbf0, 0x0223cdb8),
+           TOBN(0x4fec3cae, 0x2884d3fe), TOBN(0x065ecce6, 0xd75e25a4)},
+          {TOBN(0x6c2294ce, 0x69f79071), TOBN(0x0d9a8e5f, 0x044b8666),
+           TOBN(0x5009f238, 0x17b69d8f), TOBN(0x3c29f8fe, 0xc5dfdaf7)}},
+         {{TOBN(0x9067528f, 0xebae68c4), TOBN(0x5b385632, 0x30c5ba21),
+           TOBN(0x540df119, 0x1fdd1aec), TOBN(0xcf37825b, 0xcfba4c78)},
+          {TOBN(0x77eff980, 0xbeb11454), TOBN(0x40a1a991, 0x60c1b066),
+           TOBN(0xe8018980, 0xf889a1c7), TOBN(0xb9c52ae9, 0x76c24be0)}},
+         {{TOBN(0x05fbbcce, 0x45650ef4), TOBN(0xae000f10, 0x8aa29ac7),
+           TOBN(0x884b7172, 0x4f04c470), TOBN(0x7cd4fde2, 0x19bb5c25)},
+          {TOBN(0x6477b22a, 0xe8840869), TOBN(0xa8868859, 0x5fbd0686),
+           TOBN(0xf23cc02e, 0x1116dfba), TOBN(0x76cd563f, 0xd87d7776)}},
+         {{TOBN(0xe2a37598, 0xa9d82abf), TOBN(0x5f188ccb, 0xe6c170f5),
+           TOBN(0x81682200, 0x5066b087), TOBN(0xda22c212, 0xc7155ada)},
+          {TOBN(0x151e5d3a, 0xfbddb479), TOBN(0x4b606b84, 0x6d715b99),
+           TOBN(0x4a73b54b, 0xf997cb2e), TOBN(0x9a1bfe43, 0x3ecd8b66)}},
+         {{TOBN(0x1c312809, 0x2a67d48a), TOBN(0xcd6a671e, 0x031fa9e2),
+           TOBN(0xbec3312a, 0x0e43a34a), TOBN(0x1d935639, 0x55ef47d3)},
+          {TOBN(0x5ea02489, 0x8fea73ea), TOBN(0x8247b364, 0xa035afb2),
+           TOBN(0xb58300a6, 0x5265b54c), TOBN(0x3286662f, 0x722c7148)}},
+         {{TOBN(0xb77fd76b, 0xb4ec4c20), TOBN(0xf0a12fa7, 0x0f3fe3fd),
+           TOBN(0xf845bbf5, 0x41d8c7e8), TOBN(0xe4d969ca, 0x5ec10aa8)},
+          {TOBN(0x4c0053b7, 0x43e232a3), TOBN(0xdc7a3fac, 0x37f8a45a),
+           TOBN(0x3c4261c5, 0x20d81c8f), TOBN(0xfd4b3453, 0xb00eab00)}},
+         {{TOBN(0x76d48f86, 0xd36e3062), TOBN(0x626c5277, 0xa143ff02),
+           TOBN(0x538174de, 0xaf76f42e), TOBN(0x2267aa86, 0x6407ceac)},
+          {TOBN(0xfad76351, 0x72e572d5), TOBN(0xab861af7, 0xba7330eb),
+           TOBN(0xa0a1c8c7, 0x418d8657), TOBN(0x988821cb, 0x20289a52)}},
+         {{TOBN(0x79732522, 0xcccc18ad), TOBN(0xaadf3f8d, 0xf1a6e027),
+           TOBN(0xf7382c93, 0x17c2354d), TOBN(0x5ce1680c, 0xd818b689)},
+          {TOBN(0x359ebbfc, 0xd9ecbee9), TOBN(0x4330689c, 0x1cae62ac),
+           TOBN(0xb55ce5b4, 0xc51ac38a), TOBN(0x7921dfea, 0xfe238ee8)}},
+         {{TOBN(0x3972bef8, 0x271d1ca5), TOBN(0x3e423bc7, 0xe8aabd18),
+           TOBN(0x57b09f3f, 0x44a3e5e3), TOBN(0x5da886ae, 0x7b444d66)},
+          {TOBN(0x68206634, 0xa9964375), TOBN(0x356a2fa3, 0x699cd0ff),
+           TOBN(0xaf0faa24, 0xdba515e9), TOBN(0x536e1f5c, 0xb321d79a)}},
+         {{TOBN(0xd3b9913a, 0x5c04e4ea), TOBN(0xd549dcfe, 0xd6f11513),
+           TOBN(0xee227bf5, 0x79fd1d94), TOBN(0x9f35afee, 0xb43f2c67)},
+          {TOBN(0xd2638d24, 0xf1314f53), TOBN(0x62baf948, 0xcabcd822),
+           TOBN(0x5542de29, 0x4ef48db0), TOBN(0xb3eb6a04, 0xfc5f6bb2)}},
+         {{TOBN(0x23c110ae, 0x1208e16a), TOBN(0x1a4d15b5, 0xf8363e24),
+           TOBN(0x30716844, 0x164be00b), TOBN(0xa8e24824, 0xf6f4690d)},
+          {TOBN(0x548773a2, 0x90b170cf), TOBN(0xa1bef331, 0x42f191f4),
+           TOBN(0x70f418d0, 0x9247aa97), TOBN(0xea06028e, 0x48be9147)}},
+         {{TOBN(0xe13122f3, 0xdbfb894e), TOBN(0xbe9b79f6, 0xce274b18),
+           TOBN(0x85a49de5, 0xca58aadf), TOBN(0x24957758, 0x11487351)},
+          {TOBN(0x111def61, 0xbb939099), TOBN(0x1d6a974a, 0x26d13694),
+           TOBN(0x4474b4ce, 0xd3fc253b), TOBN(0x3a1485e6, 0x4c5db15e)}},
+         {{TOBN(0xe79667b4, 0x147c15b4), TOBN(0xe34f553b, 0x7bc61301),
+           TOBN(0x032b80f8, 0x17094381), TOBN(0x55d8bafd, 0x723eaa21)},
+          {TOBN(0x5a987995, 0xf1c0e74e), TOBN(0x5a9b292e, 0xebba289c),
+           TOBN(0x413cd4b2, 0xeb4c8251), TOBN(0x98b5d243, 0xd162db0a)}},
+         {{TOBN(0xbb47bf66, 0x68342520), TOBN(0x08d68949, 0xbaa862d1),
+           TOBN(0x11f349c7, 0xe906abcd), TOBN(0x454ce985, 0xed7bf00e)},
+          {TOBN(0xacab5c9e, 0xb55b803b), TOBN(0xb03468ea, 0x31e3c16d),
+           TOBN(0x5c24213d, 0xd273bf12), TOBN(0x211538eb, 0x71587887)}},
+         {{TOBN(0x198e4a2f, 0x731dea2d), TOBN(0xd5856cf2, 0x74ed7b2a),
+           TOBN(0x86a632eb, 0x13a664fe), TOBN(0x932cd909, 0xbda41291)},
+          {TOBN(0x850e95d4, 0xc0c4ddc0), TOBN(0xc0f422f8, 0x347fc2c9),
+           TOBN(0xe68cbec4, 0x86076bcb), TOBN(0xf9e7c0c0, 0xcd6cd286)}},
+         {{TOBN(0x65994ddb, 0x0f5f27ca), TOBN(0xe85461fb, 0xa80d59ff),
+           TOBN(0xff05481a, 0x66601023), TOBN(0xc665427a, 0xfc9ebbfb)},
+          {TOBN(0xb0571a69, 0x7587fd52), TOBN(0x935289f8, 0x8d49efce),
+           TOBN(0x61becc60, 0xea420688), TOBN(0xb22639d9, 0x13a786af)}},
+         {{TOBN(0x1a8e6220, 0x361ecf90), TOBN(0x001f23e0, 0x25506463),
+           TOBN(0xe4ae9b5d, 0x0a5c2b79), TOBN(0xebc9cdad, 0xd8149db5)},
+          {TOBN(0xb33164a1, 0x934aa728), TOBN(0x750eb00e, 0xae9b60f3),
+           TOBN(0x5a91615b, 0x9b9cfbfd), TOBN(0x97015cbf, 0xef45f7f6)}},
+         {{TOBN(0xb462c4a5, 0xbf5151df), TOBN(0x21adcc41, 0xb07118f2),
+           TOBN(0xd60c545b, 0x043fa42c), TOBN(0xfc21aa54, 0xe96be1ab)},
+          {TOBN(0xe84bc32f, 0x4e51ea80), TOBN(0x3dae45f0, 0x259b5d8d),
+           TOBN(0xbb73c7eb, 0xc38f1b5e), TOBN(0xe405a74a, 0xe8ae617d)}},
+         {{TOBN(0xbb1ae9c6, 0x9f1c56bd), TOBN(0x8c176b98, 0x49f196a4),
+           TOBN(0xc448f311, 0x6875092b), TOBN(0xb5afe3de, 0x9f976033)},
+          {TOBN(0xa8dafd49, 0x145813e5), TOBN(0x687fc4d9, 0xe2b34226),
+           TOBN(0xf2dfc92d, 0x4c7ff57f), TOBN(0x004e3fc1, 0x401f1b46)}},
+         {{TOBN(0x5afddab6, 0x1430c9ab), TOBN(0x0bdd41d3, 0x2238e997),
+           TOBN(0xf0947430, 0x418042ae), TOBN(0x71f9adda, 0xcdddc4cb)},
+          {TOBN(0x7090c016, 0xc52dd907), TOBN(0xd9bdf44d, 0x29e2047f),
+           TOBN(0xe6f1fe80, 0x1b1011a6), TOBN(0xb63accbc, 0xd9acdc78)}},
+         {{TOBN(0xcfc7e235, 0x1272a95b), TOBN(0x0c667717, 0xa6276ac8),
+           TOBN(0x3c0d3709, 0xe2d7eef7), TOBN(0x5add2b06, 0x9a685b3e)},
+          {TOBN(0x363ad32d, 0x14ea5d65), TOBN(0xf8e01f06, 0x8d7dd506),
+           TOBN(0xc9ea2213, 0x75b4aac6), TOBN(0xed2a2bf9, 0x0d353466)}},
+         {{TOBN(0x439d79b5, 0xe9d3a7c3), TOBN(0x8e0ee5a6, 0x81b7f34b),
+           TOBN(0xcf3dacf5, 0x1dc4ba75), TOBN(0x1d3d1773, 0xeb3310c7)},
+          {TOBN(0xa8e67112, 0x7747ae83), TOBN(0x31f43160, 0x197d6b40),
+           TOBN(0x0521ccee, 0xcd961400), TOBN(0x67246f11, 0xf6535768)}},
+         {{TOBN(0x702fcc5a, 0xef0c3133), TOBN(0x247cc45d, 0x7e16693b),
+           TOBN(0xfd484e49, 0xc729b749), TOBN(0x522cef7d, 0xb218320f)},
+          {TOBN(0xe56ef405, 0x59ab93b3), TOBN(0x225fba11, 0x9f181071),
+           TOBN(0x33bd6595, 0x15330ed0), TOBN(0xc4be69d5, 0x1ddb32f7)}},
+         {{TOBN(0x264c7668, 0x0448087c), TOBN(0xac30903f, 0x71432dae),
+           TOBN(0x3851b266, 0x00f9bf47), TOBN(0x400ed311, 0x6cdd6d03)},
+          {TOBN(0x045e79fe, 0xf8fd2424), TOBN(0xfdfd974a, 0xfa6da98b),
+           TOBN(0x45c9f641, 0x0c1e673a), TOBN(0x76f2e733, 0x5b2c5168)}},
+         {{TOBN(0x1adaebb5, 0x2a601753), TOBN(0xb286514c, 0xc57c2d49),
+           TOBN(0xd8769670, 0x1e0bfd24), TOBN(0x950c547e, 0x04478922)},
+          {TOBN(0xd1d41969, 0xe5d32bfe), TOBN(0x30bc1472, 0x750d6c3e),
+           TOBN(0x8f3679fe, 0xe0e27f3a), TOBN(0x8f64a7dc, 0xa4a6ee0c)}},
+         {{TOBN(0x2fe59937, 0x633dfb1f), TOBN(0xea82c395, 0x977f2547),
+           TOBN(0xcbdfdf1a, 0x661ea646), TOBN(0xc7ccc591, 0xb9085451)},
+          {TOBN(0x82177962, 0x81761e13), TOBN(0xda57596f, 0x9196885c),
+           TOBN(0xbc17e849, 0x28ffbd70), TOBN(0x1e6e0a41, 0x2671d36f)}},
+         {{TOBN(0x61ae872c, 0x4152fcf5), TOBN(0x441c87b0, 0x9e77e754),
+           TOBN(0xd0799dd5, 0xa34dff09), TOBN(0x766b4e44, 0x88a6b171)},
+          {TOBN(0xdc06a512, 0x11f1c792), TOBN(0xea02ae93, 0x4be35c3e),
+           TOBN(0xe5ca4d6d, 0xe90c469e), TOBN(0x4df4368e, 0x56e4ff5c)}},
+         {{TOBN(0x7817acab, 0x4baef62e), TOBN(0x9f5a2202, 0xa85b91e8),
+           TOBN(0x9666ebe6, 0x6ce57610), TOBN(0x32ad31f3, 0xf73bfe03)},
+          {TOBN(0x628330a4, 0x25bcf4d6), TOBN(0xea950593, 0x515056e6),
+           TOBN(0x59811c89, 0xe1332156), TOBN(0xc89cf1fe, 0x8c11b2d7)}},
+         {{TOBN(0x75b63913, 0x04e60cc0), TOBN(0xce811e8d, 0x4625d375),
+           TOBN(0x030e43fc, 0x2d26e562), TOBN(0xfbb30b4b, 0x608d36a0)},
+          {TOBN(0x634ff82c, 0x48528118), TOBN(0x7c6fe085, 0xcd285911),
+           TOBN(0x7f2830c0, 0x99358f28), TOBN(0x2e60a95e, 0x665e6c09)}},
+         {{TOBN(0x08407d3d, 0x9b785dbf), TOBN(0x530889ab, 0xa759bce7),
+           TOBN(0xf228e0e6, 0x52f61239), TOBN(0x2b6d1461, 0x6879be3c)},
+          {TOBN(0xe6902c04, 0x51a7bbf7), TOBN(0x30ad99f0, 0x76f24a64),
+           TOBN(0x66d9317a, 0x98bc6da0), TOBN(0xf4f877f3, 0xcb596ac0)}},
+         {{TOBN(0xb05ff62d, 0x4c44f119), TOBN(0x4555f536, 0xe9b77416),
+           TOBN(0xc7c0d059, 0x8caed63b), TOBN(0x0cd2b7ce, 0xc358b2a9)},
+          {TOBN(0x3f33287b, 0x46945fa3), TOBN(0xf8785b20, 0xd67c8791),
+           TOBN(0xc54a7a61, 0x9637bd08), TOBN(0x54d4598c, 0x18be79d7)}},
+         {{TOBN(0x889e5acb, 0xc46d7ce1), TOBN(0x9a515bb7, 0x8b085877),
+           TOBN(0xfac1a03d, 0x0b7a5050), TOBN(0x7d3e738a, 0xf2926035)},
+          {TOBN(0x861cc2ce, 0x2a6cb0eb), TOBN(0x6f2e2955, 0x8f7adc79),
+           TOBN(0x61c4d451, 0x33016376), TOBN(0xd9fd2c80, 0x5ad59090)}},
+         {{TOBN(0xe5a83738, 0xb2b836a1), TOBN(0x855b41a0, 0x7c0d6622),
+           TOBN(0x186fe317, 0x7cc19af1), TOBN(0x6465c1ff, 0xfdd99acb)},
+          {TOBN(0x46e5c23f, 0x6974b99e), TOBN(0x75a7cf8b, 0xa2717cbe),
+           TOBN(0x4d2ebc3f, 0x062be658), TOBN(0x094b4447, 0x5f209c98)}},
+         {{TOBN(0x4af285ed, 0xb940cb5a), TOBN(0x6706d792, 0x7cc82f10),
+           TOBN(0xc8c8776c, 0x030526fa), TOBN(0xfa8e6f76, 0xa0da9140)},
+          {TOBN(0x77ea9d34, 0x591ee4f0), TOBN(0x5f46e337, 0x40274166),
+           TOBN(0x1bdf98bb, 0xea671457), TOBN(0xd7c08b46, 0x862a1fe2)}},
+         {{TOBN(0x46cc303c, 0x1c08ad63), TOBN(0x99543440, 0x4c845e7b),
+           TOBN(0x1b8fbdb5, 0x48f36bf7), TOBN(0x5b82c392, 0x8c8273a7)},
+          {TOBN(0x08f712c4, 0x928435d5), TOBN(0x071cf0f1, 0x79330380),
+           TOBN(0xc74c2d24, 0xa8da054a), TOBN(0xcb0e7201, 0x43c46b5c)}},
+         {{TOBN(0x0ad7337a, 0xc0b7eff3), TOBN(0x8552225e, 0xc5e48b3c),
+           TOBN(0xe6f78b0c, 0x73f13a5f), TOBN(0x5e70062e, 0x82349cbe)},
+          {TOBN(0x6b8d5048, 0xe7073969), TOBN(0x392d2a29, 0xc33cb3d2),
+           TOBN(0xee4f727c, 0x4ecaa20f), TOBN(0xa068c99e, 0x2ccde707)}},
+         {{TOBN(0xfcd5651f, 0xb87a2913), TOBN(0xea3e3c15, 0x3cc252f0),
+           TOBN(0x777d92df, 0x3b6cd3e4), TOBN(0x7a414143, 0xc5a732e7)},
+          {TOBN(0xa895951a, 0xa71ff493), TOBN(0xfe980c92, 0xbbd37cf6),
+           TOBN(0x45bd5e64, 0xdecfeeff), TOBN(0x910dc2a9, 0xa44c43e9)}},
+         {{TOBN(0xcb403f26, 0xcca9f54d), TOBN(0x928bbdfb, 0x9303f6db),
+           TOBN(0x3c37951e, 0xa9eee67c), TOBN(0x3bd61a52, 0xf79961c3)},
+          {TOBN(0x09a238e6, 0x395c9a79), TOBN(0x6940ca2d, 0x61eb352d),
+           TOBN(0x7d1e5c5e, 0xc1875631), TOBN(0x1e19742c, 0x1e1b20d1)}},
+         {{TOBN(0x4633d908, 0x23fc2e6e), TOBN(0xa76e29a9, 0x08959149),
+           TOBN(0x61069d9c, 0x84ed7da5), TOBN(0x0baa11cf, 0x5dbcad51)},
+          {TOBN(0xd01eec64, 0x961849da), TOBN(0x93b75f1f, 0xaf3d8c28),
+           TOBN(0x57bc4f9f, 0x1ca2ee44), TOBN(0x5a26322d, 0x00e00558)}},
+         {{TOBN(0x1888d658, 0x61a023ef), TOBN(0x1d72aab4, 0xb9e5246e),
+           TOBN(0xa9a26348, 0xe5563ec0), TOBN(0xa0971963, 0xc3439a43)},
+          {TOBN(0x567dd54b, 0xadb9b5b7), TOBN(0x73fac1a1, 0xc45a524b),
+           TOBN(0x8fe97ef7, 0xfe38e608), TOBN(0x608748d2, 0x3f384f48)}},
+         {{TOBN(0xb0571794, 0xc486094f), TOBN(0x869254a3, 0x8bf3a8d6),
+           TOBN(0x148a8dd1, 0x310b0e25), TOBN(0x99ab9f3f, 0x9aa3f7d8)},
+          {TOBN(0x0927c68a, 0x6706c02e), TOBN(0x22b5e76c, 0x69790e6c),
+           TOBN(0x6c325260, 0x6c71376c), TOBN(0x53a57690, 0x09ef6657)}},
+         {{TOBN(0x8d63f852, 0xedffcf3a), TOBN(0xb4d2ed04, 0x3c0a6f55),
+           TOBN(0xdb3aa8de, 0x12519b9e), TOBN(0x5d38e9c4, 0x1e0a569a)},
+          {TOBN(0x871528bf, 0x303747e2), TOBN(0xa208e77c, 0xf5b5c18d),
+           TOBN(0x9d129c88, 0xca6bf923), TOBN(0xbcbf197f, 0xbf02839f)}},
+         {{TOBN(0x9b9bf030, 0x27323194), TOBN(0x3b055a8b, 0x339ca59d),
+           TOBN(0xb46b2312, 0x0f669520), TOBN(0x19789f1f, 0x497e5f24)},
+          {TOBN(0x9c499468, 0xaaf01801), TOBN(0x72ee1190, 0x8b69d59c),
+           TOBN(0x8bd39595, 0xacf4c079), TOBN(0x3ee11ece, 0x8e0cd048)}},
+         {{TOBN(0xebde86ec, 0x1ed66f18), TOBN(0x225d906b, 0xd61fce43),
+           TOBN(0x5cab07d6, 0xe8bed74d), TOBN(0x16e4617f, 0x27855ab7)},
+          {TOBN(0x6568aadd, 0xb2fbc3dd), TOBN(0xedb5484f, 0x8aeddf5b),
+           TOBN(0x878f20e8, 0x6dcf2fad), TOBN(0x3516497c, 0x615f5699)}}},
+        {{{TOBN(0xef0a3fec, 0xfa181e69), TOBN(0x9ea02f81, 0x30d69a98),
+           TOBN(0xb2e9cf8e, 0x66eab95d), TOBN(0x520f2beb, 0x24720021)},
+          {TOBN(0x621c540a, 0x1df84361), TOBN(0x12037721, 0x71fa6d5d),
+           TOBN(0x6e3c7b51, 0x0ff5f6ff), TOBN(0x817a069b, 0xabb2bef3)}},
+         {{TOBN(0x83572fb6, 0xb294cda6), TOBN(0x6ce9bf75, 0xb9039f34),
+           TOBN(0x20e012f0, 0x095cbb21), TOBN(0xa0aecc1b, 0xd063f0da)},
+          {TOBN(0x57c21c3a, 0xf02909e5), TOBN(0xc7d59ecf, 0x48ce9cdc),
+           TOBN(0x2732b844, 0x8ae336f8), TOBN(0x056e3723, 0x3f4f85f4)}},
+         {{TOBN(0x8a10b531, 0x89e800ca), TOBN(0x50fe0c17, 0x145208fd),
+           TOBN(0x9e43c0d3, 0xb714ba37), TOBN(0x427d200e, 0x34189acc)},
+          {TOBN(0x05dee24f, 0xe616e2c0), TOBN(0x9c25f4c8, 0xee1854c1),
+           TOBN(0x4d3222a5, 0x8f342a73), TOBN(0x0807804f, 0xa027c952)}},
+         {{TOBN(0xc222653a, 0x4f0d56f3), TOBN(0x961e4047, 0xca28b805),
+           TOBN(0x2c03f8b0, 0x4a73434b), TOBN(0x4c966787, 0xab712a19)},
+          {TOBN(0xcc196c42, 0x864fee42), TOBN(0xc1be93da, 0x5b0ece5c),
+           TOBN(0xa87d9f22, 0xc131c159), TOBN(0x2bb6d593, 0xdce45655)}},
+         {{TOBN(0x22c49ec9, 0xb809b7ce), TOBN(0x8a41486b, 0xe2c72c2c),
+           TOBN(0x813b9420, 0xfea0bf36), TOBN(0xb3d36ee9, 0xa66dac69)},
+          {TOBN(0x6fddc08a, 0x328cc987), TOBN(0x0a3bcd2c, 0x3a326461),
+           TOBN(0x7103c49d, 0xd810dbba), TOBN(0xf9d81a28, 0x4b78a4c4)}},
+         {{TOBN(0x3de865ad, 0xe4d55941), TOBN(0xdedafa5e, 0x30384087),
+           TOBN(0x6f414abb, 0x4ef18b9b), TOBN(0x9ee9ea42, 0xfaee5268)},
+          {TOBN(0x260faa16, 0x37a55a4a), TOBN(0xeb19a514, 0x015f93b9),
+           TOBN(0x51d7ebd2, 0x9e9c3598), TOBN(0x523fc56d, 0x1932178e)}},
+         {{TOBN(0x501d070c, 0xb98fe684), TOBN(0xd60fbe9a, 0x124a1458),
+           TOBN(0xa45761c8, 0x92bc6b3f), TOBN(0xf5384858, 0xfe6f27cb)},
+          {TOBN(0x4b0271f7, 0xb59e763b), TOBN(0x3d4606a9, 0x5b5a8e5e),
+           TOBN(0x1eda5d9b, 0x05a48292), TOBN(0xda7731d0, 0xe6fec446)}},
+         {{TOBN(0xa3e33693, 0x90d45871), TOBN(0xe9764040, 0x06166d8d),
+           TOBN(0xb5c33682, 0x89a90403), TOBN(0x4bd17983, 0x72f1d637)},
+          {TOBN(0xa616679e, 0xd5d2c53a), TOBN(0x5ec4bcd8, 0xfdcf3b87),
+           TOBN(0xae6d7613, 0xb66a694e), TOBN(0x7460fc76, 0xe3fc27e5)}},
+         {{TOBN(0x70469b82, 0x95caabee), TOBN(0xde024ca5, 0x889501e3),
+           TOBN(0x6bdadc06, 0x076ed265), TOBN(0x0cb1236b, 0x5a0ef8b2)},
+          {TOBN(0x4065ddbf, 0x0972ebf9), TOBN(0xf1dd3875, 0x22aca432),
+           TOBN(0xa88b97cf, 0x744aff76), TOBN(0xd1359afd, 0xfe8e3d24)}},
+         {{TOBN(0x52a3ba2b, 0x91502cf3), TOBN(0x2c3832a8, 0x084db75d),
+           TOBN(0x04a12ddd, 0xde30b1c9), TOBN(0x7802eabc, 0xe31fd60c)},
+          {TOBN(0x33707327, 0xa37fddab), TOBN(0x65d6f2ab, 0xfaafa973),
+           TOBN(0x3525c5b8, 0x11e6f91a), TOBN(0x76aeb0c9, 0x5f46530b)}},
+         {{TOBN(0xe8815ff6, 0x2f93a675), TOBN(0xa6ec9684, 0x05f48679),
+           TOBN(0x6dcbb556, 0x358ae884), TOBN(0x0af61472, 0xe19e3873)},
+          {TOBN(0x72334372, 0xa5f696be), TOBN(0xc65e57ea, 0x6f22fb70),
+           TOBN(0x268da30c, 0x946cea90), TOBN(0x136a8a87, 0x65681b2a)}},
+         {{TOBN(0xad5e81dc, 0x0f9f44d4), TOBN(0xf09a6960, 0x2c46585a),
+           TOBN(0xd1649164, 0xc447d1b1), TOBN(0x3b4b36c8, 0x879dc8b1)},
+          {TOBN(0x20d4177b, 0x3b6b234c), TOBN(0x096a2505, 0x1730d9d0),
+           TOBN(0x0611b9b8, 0xef80531d), TOBN(0xba904b3b, 0x64bb495d)}},
+         {{TOBN(0x1192d9d4, 0x93a3147a), TOBN(0x9f30a5dc, 0x9a565545),
+           TOBN(0x90b1f9cb, 0x6ef07212), TOBN(0x29958546, 0x0d87fc13)},
+          {TOBN(0xd3323eff, 0xc17db9ba), TOBN(0xcb18548c, 0xcb1644a8),
+           TOBN(0x18a306d4, 0x4f49ffbc), TOBN(0x28d658f1, 0x4c2e8684)}},
+         {{TOBN(0x44ba60cd, 0xa99f8c71), TOBN(0x67b7abdb, 0x4bf742ff),
+           TOBN(0x66310f9c, 0x914b3f99), TOBN(0xae430a32, 0xf412c161)},
+          {TOBN(0x1e6776d3, 0x88ace52f), TOBN(0x4bc0fa24, 0x52d7067d),
+           TOBN(0x03c286aa, 0x8f07cd1b), TOBN(0x4cb8f38c, 0xa985b2c1)}},
+         {{TOBN(0x83ccbe80, 0x8c3bff36), TOBN(0x005a0bd2, 0x5263e575),
+           TOBN(0x460d7dda, 0x259bdcd1), TOBN(0x4a1c5642, 0xfa5cab6b)},
+          {TOBN(0x2b7bdbb9, 0x9fe4fc88), TOBN(0x09418e28, 0xcc97bbb5),
+           TOBN(0xd8274fb4, 0xa12321ae), TOBN(0xb137007d, 0x5c87b64e)}},
+         {{TOBN(0x80531fe1, 0xc63c4962), TOBN(0x50541e89, 0x981fdb25),
+           TOBN(0xdc1291a1, 0xfd4c2b6b), TOBN(0xc0693a17, 0xa6df4fca)},
+          {TOBN(0xb2c4604e, 0x0117f203), TOBN(0x245f1963, 0x0a99b8d0),
+           TOBN(0xaedc20aa, 0xc6212c44), TOBN(0xb1ed4e56, 0x520f52a8)}},
+         {{TOBN(0xfe48f575, 0xf8547be3), TOBN(0x0a7033cd, 0xa9e45f98),
+           TOBN(0x4b45d3a9, 0x18c50100), TOBN(0xb2a6cd6a, 0xa61d41da)},
+          {TOBN(0x60bbb4f5, 0x57933c6b), TOBN(0xa7538ebd, 0x2b0d7ffc),
+           TOBN(0x9ea3ab8d, 0x8cd626b6), TOBN(0x8273a484, 0x3601625a)}},
+         {{TOBN(0x88859845, 0x0168e508), TOBN(0x8cbc9bb2, 0x99a94abd),
+           TOBN(0x713ac792, 0xfab0a671), TOBN(0xa3995b19, 0x6c9ebffc)},
+          {TOBN(0xe711668e, 0x1239e152), TOBN(0x56892558, 0xbbb8dff4),
+           TOBN(0x8bfc7dab, 0xdbf17963), TOBN(0x5b59fe5a, 0xb3de1253)}},
+         {{TOBN(0x7e3320eb, 0x34a9f7ae), TOBN(0xe5e8cf72, 0xd751efe4),
+           TOBN(0x7ea003bc, 0xd9be2f37), TOBN(0xc0f551a0, 0xb6c08ef7)},
+          {TOBN(0x56606268, 0x038f6725), TOBN(0x1dd38e35, 0x6d92d3b6),
+           TOBN(0x07dfce7c, 0xc3cbd686), TOBN(0x4e549e04, 0x651c5da8)}},
+         {{TOBN(0x4058f93b, 0x08b19340), TOBN(0xc2fae6f4, 0xcac6d89d),
+           TOBN(0x4bad8a8c, 0x8f159cc7), TOBN(0x0ddba4b3, 0xcb0b601c)},
+          {TOBN(0xda4fc7b5, 0x1dd95f8c), TOBN(0x1d163cd7, 0xcea5c255),
+           TOBN(0x30707d06, 0x274a8c4c), TOBN(0x79d9e008, 0x2802e9ce)}},
+         {{TOBN(0x02a29ebf, 0xe6ddd505), TOBN(0x37064e74, 0xb50bed1a),
+           TOBN(0x3f6bae65, 0xa7327d57), TOBN(0x3846f5f1, 0xf83920bc)},
+          {TOBN(0x87c37491, 0x60df1b9b), TOBN(0x4cfb2895, 0x2d1da29f),
+           TOBN(0x10a478ca, 0x4ed1743c), TOBN(0x390c6030, 0x3edd47c6)}},
+         {{TOBN(0x8f3e5312, 0x8c0a78de), TOBN(0xccd02bda, 0x1e85df70),
+           TOBN(0xd6c75c03, 0xa61b6582), TOBN(0x0762921c, 0xfc0eebd1)},
+          {TOBN(0xd34d0823, 0xd85010c0), TOBN(0xd73aaacb, 0x0044cf1f),
+           TOBN(0xfb4159bb, 0xa3b5e78a), TOBN(0x2287c7f7, 0xe5826f3f)}},
+         {{TOBN(0x4aeaf742, 0x580b1a01), TOBN(0xf080415d, 0x60423b79),
+           TOBN(0xe12622cd, 0xa7dea144), TOBN(0x49ea4996, 0x59d62472)},
+          {TOBN(0xb42991ef, 0x571f3913), TOBN(0x0610f214, 0xf5b25a8a),
+           TOBN(0x47adc585, 0x30b79e8f), TOBN(0xf90e3df6, 0x07a065a2)}},
+         {{TOBN(0x5d0a5deb, 0x43e2e034), TOBN(0x53fb5a34, 0x444024aa),
+           TOBN(0xa8628c68, 0x6b0c9f7f), TOBN(0x9c69c29c, 0xac563656)},
+          {TOBN(0x5a231feb, 0xbace47b6), TOBN(0xbdce0289, 0x9ea5a2ec),
+           TOBN(0x05da1fac, 0x9463853e), TOBN(0x96812c52, 0x509e78aa)}},
+         {{TOBN(0xd3fb5771, 0x57151692), TOBN(0xeb2721f8, 0xd98e1c44),
+           TOBN(0xc0506087, 0x32399be1), TOBN(0xda5a5511, 0xd979d8b8)},
+          {TOBN(0x737ed55d, 0xc6f56780), TOBN(0xe20d3004, 0x0dc7a7f4),
+           TOBN(0x02ce7301, 0xf5941a03), TOBN(0x91ef5215, 0xed30f83a)}},
+         {{TOBN(0x28727fc1, 0x4092d85f), TOBN(0x72d223c6, 0x5c49e41a),
+           TOBN(0xa7cf30a2, 0xba6a4d81), TOBN(0x7c086209, 0xb030d87d)},
+          {TOBN(0x04844c7d, 0xfc588b09), TOBN(0x728cd499, 0x5874bbb0),
+           TOBN(0xcc1281ee, 0xe84c0495), TOBN(0x0769b5ba, 0xec31958f)}},
+         {{TOBN(0x665c228b, 0xf99c2471), TOBN(0xf2d8a11b, 0x191eb110),
+           TOBN(0x4594f494, 0xd36d7024), TOBN(0x482ded8b, 0xcdcb25a1)},
+          {TOBN(0xc958a9d8, 0xdadd4885), TOBN(0x7004477e, 0xf1d2b547),
+           TOBN(0x0a45f6ef, 0x2a0af550), TOBN(0x4fc739d6, 0x2f8d6351)}},
+         {{TOBN(0x75cdaf27, 0x786f08a9), TOBN(0x8700bb26, 0x42c2737f),
+           TOBN(0x855a7141, 0x1c4e2670), TOBN(0x810188c1, 0x15076fef)},
+          {TOBN(0xc251d0c9, 0xabcd3297), TOBN(0xae4c8967, 0xf48108eb),
+           TOBN(0xbd146de7, 0x18ceed30), TOBN(0xf9d4f07a, 0xc986bced)}},
+         {{TOBN(0x5ad98ed5, 0x83fa1e08), TOBN(0x7780d33e, 0xbeabd1fb),
+           TOBN(0xe330513c, 0x903b1196), TOBN(0xba11de9e, 0xa47bc8c4)},
+          {TOBN(0x684334da, 0x02c2d064), TOBN(0x7ecf360d, 0xa48de23b),
+           TOBN(0x57a1b474, 0x0a9089d8), TOBN(0xf28fa439, 0xff36734c)}},
+         {{TOBN(0xf2a482cb, 0xea4570b3), TOBN(0xee65d68b, 0xa5ebcee9),
+           TOBN(0x988d0036, 0xb9694cd5), TOBN(0x53edd0e9, 0x37885d32)},
+          {TOBN(0xe37e3307, 0xbeb9bc6d), TOBN(0xe9abb907, 0x9f5c6768),
+           TOBN(0x4396ccd5, 0x51f2160f), TOBN(0x2500888c, 0x47336da6)}},
+         {{TOBN(0x383f9ed9, 0x926fce43), TOBN(0x809dd1c7, 0x04da2930),
+           TOBN(0x30f6f596, 0x8a4cb227), TOBN(0x0d700c7f, 0x73a56b38)},
+          {TOBN(0x1825ea33, 0xab64a065), TOBN(0xaab9b735, 0x1338df80),
+           TOBN(0x1516100d, 0x9b63f57f), TOBN(0x2574395a, 0x27a6a634)}},
+         {{TOBN(0xb5560fb6, 0x700a1acd), TOBN(0xe823fd73, 0xfd999681),
+           TOBN(0xda915d1f, 0x6cb4e1ba), TOBN(0x0d030118, 0x6ebe00a3)},
+          {TOBN(0x744fb0c9, 0x89fca8cd), TOBN(0x970d01db, 0xf9da0e0b),
+           TOBN(0x0ad8c564, 0x7931d76f), TOBN(0xb15737bf, 0xf659b96a)}},
+         {{TOBN(0xdc9933e8, 0xa8b484e7), TOBN(0xb2fdbdf9, 0x7a26dec7),
+           TOBN(0x2349e9a4, 0x9f1f0136), TOBN(0x7860368e, 0x70fddddb)},
+          {TOBN(0xd93d2c1c, 0xf9ad3e18), TOBN(0x6d6c5f17, 0x689f4e79),
+           TOBN(0x7a544d91, 0xb24ff1b6), TOBN(0x3e12a5eb, 0xfe16cd8c)}},
+         {{TOBN(0x543574e9, 0xa56b872f), TOBN(0xa1ad550c, 0xfcf68ea2),
+           TOBN(0x689e37d2, 0x3f560ef7), TOBN(0x8c54b9ca, 0xc9d47a8b)},
+          {TOBN(0x46d40a4a, 0x088ac342), TOBN(0xec450c7c, 0x1576c6d0),
+           TOBN(0xb589e31c, 0x1f9689e9), TOBN(0xdacf2602, 0xb8781718)}},
+         {{TOBN(0xa89237c6, 0xc8cb6b42), TOBN(0x1326fc93, 0xb96ef381),
+           TOBN(0x55d56c6d, 0xb5f07825), TOBN(0xacba2eea, 0x7449e22d)},
+          {TOBN(0x74e0887a, 0x633c3000), TOBN(0xcb6cd172, 0xd7cbcf71),
+           TOBN(0x309e81de, 0xc36cf1be), TOBN(0x07a18a6d, 0x60ae399b)}},
+         {{TOBN(0xb36c2679, 0x9edce57e), TOBN(0x52b892f4, 0xdf001d41),
+           TOBN(0xd884ae5d, 0x16a1f2c6), TOBN(0x9b329424, 0xefcc370a)},
+          {TOBN(0x3120daf2, 0xbd2e21df), TOBN(0x55298d2d, 0x02470a99),
+           TOBN(0x0b78af6c, 0xa05db32e), TOBN(0x5c76a331, 0x601f5636)}},
+         {{TOBN(0xaae861ff, 0xf8a4f29c), TOBN(0x70dc9240, 0xd68f8d49),
+           TOBN(0x960e649f, 0x81b1321c), TOBN(0x3d2c801b, 0x8792e4ce)},
+          {TOBN(0xf479f772, 0x42521876), TOBN(0x0bed93bc, 0x416c79b1),
+           TOBN(0xa67fbc05, 0x263e5bc9), TOBN(0x01e8e630, 0x521db049)}},
+         {{TOBN(0x76f26738, 0xc6f3431e), TOBN(0xe609cb02, 0xe3267541),
+           TOBN(0xb10cff2d, 0x818c877c), TOBN(0x1f0e75ce, 0x786a13cb)},
+          {TOBN(0xf4fdca64, 0x1158544d), TOBN(0x5d777e89, 0x6cb71ed0),
+           TOBN(0x3c233737, 0xa9aa4755), TOBN(0x7b453192, 0xe527ab40)}},
+         {{TOBN(0xdb59f688, 0x39f05ffe), TOBN(0x8f4f4be0, 0x6d82574e),
+           TOBN(0xcce3450c, 0xee292d1b), TOBN(0xaa448a12, 0x61ccd086)},
+          {TOBN(0xabce91b3, 0xf7914967), TOBN(0x4537f09b, 0x1908a5ed),
+           TOBN(0xa812421e, 0xf51042e7), TOBN(0xfaf5cebc, 0xec0b3a34)}},
+         {{TOBN(0x730ffd87, 0x4ca6b39a), TOBN(0x70fb72ed, 0x02efd342),
+           TOBN(0xeb4735f9, 0xd75c8edb), TOBN(0xc11f2157, 0xc278aa51)},
+          {TOBN(0xc459f635, 0xbf3bfebf), TOBN(0x3a1ff0b4, 0x6bd9601f),
+           TOBN(0xc9d12823, 0xc420cb73), TOBN(0x3e9af3e2, 0x3c2915a3)}},
+         {{TOBN(0xe0c82c72, 0xb41c3440), TOBN(0x175239e5, 0xe3039a5f),
+           TOBN(0xe1084b8a, 0x558795a3), TOBN(0x328d0a1d, 0xd01e5c60)},
+          {TOBN(0x0a495f2e, 0xd3788a04), TOBN(0x25d8ff16, 0x66c11a9f),
+           TOBN(0xf5155f05, 0x9ed692d6), TOBN(0x954fa107, 0x4f425fe4)}},
+         {{TOBN(0xd16aabf2, 0xe98aaa99), TOBN(0x90cd8ba0, 0x96b0f88a),
+           TOBN(0x957f4782, 0xc154026a), TOBN(0x54ee0734, 0x52af56d2)},
+          {TOBN(0xbcf89e54, 0x45b4147a), TOBN(0x3d102f21, 0x9a52816c),
+           TOBN(0x6808517e, 0x39b62e77), TOBN(0x92e25421, 0x69169ad8)}},
+         {{TOBN(0xd721d871, 0xbb608558), TOBN(0x60e4ebae, 0xf6d4ff9b),
+           TOBN(0x0ba10819, 0x41f2763e), TOBN(0xca2e45be, 0x51ee3247)},
+          {TOBN(0x66d172ec, 0x2bfd7a5f), TOBN(0x528a8f2f, 0x74d0b12d),
+           TOBN(0xe17f1e38, 0xdabe70dc), TOBN(0x1d5d7316, 0x9f93983c)}},
+         {{TOBN(0x51b2184a, 0xdf423e31), TOBN(0xcb417291, 0xaedb1a10),
+           TOBN(0x2054ca93, 0x625bcab9), TOBN(0x54396860, 0xa98998f0)},
+          {TOBN(0x4e53f6c4, 0xa54ae57e), TOBN(0x0ffeb590, 0xee648e9d),
+           TOBN(0xfbbdaadc, 0x6afaf6bc), TOBN(0xf88ae796, 0xaa3bfb8a)}},
+         {{TOBN(0x209f1d44, 0xd2359ed9), TOBN(0xac68dd03, 0xf3544ce2),
+           TOBN(0xf378da47, 0xfd51e569), TOBN(0xe1abd860, 0x2cc80097)},
+          {TOBN(0x23ca18d9, 0x343b6e3a), TOBN(0x480797e8, 0xb40a1bae),
+           TOBN(0xd1f0c717, 0x533f3e67), TOBN(0x44896970, 0x06e6cdfc)}},
+         {{TOBN(0x8ca21055, 0x52a82e8d), TOBN(0xb2caf785, 0x78460cdc),
+           TOBN(0x4c1b7b62, 0xe9037178), TOBN(0xefc09d2c, 0xdb514b58)},
+          {TOBN(0x5f2df9ee, 0x9113be5c), TOBN(0x2fbda78f, 0xb3f9271c),
+           TOBN(0xe09a81af, 0x8f83fc54), TOBN(0x06b13866, 0x8afb5141)}},
+         {{TOBN(0x38f6480f, 0x43e3865d), TOBN(0x72dd77a8, 0x1ddf47d9),
+           TOBN(0xf2a8e971, 0x4c205ff7), TOBN(0x46d449d8, 0x9d088ad8)},
+          {TOBN(0x926619ea, 0x185d706f), TOBN(0xe47e02eb, 0xc7dd7f62),
+           TOBN(0xe7f120a7, 0x8cbc2031), TOBN(0xc18bef00, 0x998d4ac9)}},
+         {{TOBN(0x18f37a9c, 0x6bdf22da), TOBN(0xefbc432f, 0x90dc82df),
+           TOBN(0xc52cef8e, 0x5d703651), TOBN(0x82887ba0, 0xd99881a5)},
+          {TOBN(0x7cec9dda, 0xb920ec1d), TOBN(0xd0d7e8c3, 0xec3e8d3b),
+           TOBN(0x445bc395, 0x4ca88747), TOBN(0xedeaa2e0, 0x9fd53535)}},
+         {{TOBN(0x461b1d93, 0x6cc87475), TOBN(0xd92a52e2, 0x6d2383bd),
+           TOBN(0xfabccb59, 0xd7903546), TOBN(0x6111a761, 0x3d14b112)},
+          {TOBN(0x0ae584fe, 0xb3d5f612), TOBN(0x5ea69b8d, 0x60e828ec),
+           TOBN(0x6c078985, 0x54087030), TOBN(0x649cab04, 0xac4821fe)}},
+         {{TOBN(0x25ecedcf, 0x8bdce214), TOBN(0xb5622f72, 0x86af7361),
+           TOBN(0x0e1227aa, 0x7038b9e2), TOBN(0xd0efb273, 0xac20fa77)},
+          {TOBN(0x817ff88b, 0x79df975b), TOBN(0x856bf286, 0x1999503e),
+           TOBN(0xb4d5351f, 0x5038ec46), TOBN(0x740a52c5, 0xfc42af6e)}},
+         {{TOBN(0x2e38bb15, 0x2cbb1a3f), TOBN(0xc3eb99fe, 0x17a83429),
+           TOBN(0xca4fcbf1, 0xdd66bb74), TOBN(0x880784d6, 0xcde5e8fc)},
+          {TOBN(0xddc84c1c, 0xb4e7a0be), TOBN(0x8780510d, 0xbd15a72f),
+           TOBN(0x44bcf1af, 0x81ec30e1), TOBN(0x141e50a8, 0x0a61073e)}},
+         {{TOBN(0x0d955718, 0x47be87ae), TOBN(0x68a61417, 0xf76a4372),
+           TOBN(0xf57e7e87, 0xc607c3d3), TOBN(0x043afaf8, 0x5252f332)},
+          {TOBN(0xcc14e121, 0x1552a4d2), TOBN(0xb6dee692, 0xbb4d4ab4),
+           TOBN(0xb6ab74c8, 0xa03816a4), TOBN(0x84001ae4, 0x6f394a29)}},
+         {{TOBN(0x5bed8344, 0xd795fb45), TOBN(0x57326e7d, 0xb79f55a5),
+           TOBN(0xc9533ce0, 0x4accdffc), TOBN(0x53473caf, 0x3993fa04)},
+          {TOBN(0x7906eb93, 0xa13df4c8), TOBN(0xa73e51f6, 0x97cbe46f),
+           TOBN(0xd1ab3ae1, 0x0ae4ccf8), TOBN(0x25614508, 0x8a5b3dbc)}},
+         {{TOBN(0x61eff962, 0x11a71b27), TOBN(0xdf71412b, 0x6bb7fa39),
+           TOBN(0xb31ba6b8, 0x2bd7f3ef), TOBN(0xb0b9c415, 0x69180d29)},
+          {TOBN(0xeec14552, 0x014cdde5), TOBN(0x702c624b, 0x227b4bbb),
+           TOBN(0x2b15e8c2, 0xd3e988f3), TOBN(0xee3bcc6d, 0xa4f7fd04)}},
+         {{TOBN(0x9d00822a, 0x42ac6c85), TOBN(0x2db0cea6, 0x1df9f2b7),
+           TOBN(0xd7cad2ab, 0x42de1e58), TOBN(0x346ed526, 0x2d6fbb61)},
+          {TOBN(0xb3962995, 0x1a2faf09), TOBN(0x2fa8a580, 0x7c25612e),
+           TOBN(0x30ae04da, 0x7cf56490), TOBN(0x75662908, 0x0eea3961)}},
+         {{TOBN(0x3609f5c5, 0x3d080847), TOBN(0xcb081d39, 0x5241d4f6),
+           TOBN(0xb4fb3810, 0x77961a63), TOBN(0xc20c5984, 0x2abb66fc)},
+          {TOBN(0x3d40aa7c, 0xf902f245), TOBN(0x9cb12736, 0x4e536b1e),
+           TOBN(0x5eda24da, 0x99b3134f), TOBN(0xafbd9c69, 0x5cd011af)}},
+         {{TOBN(0x9a16e30a, 0xc7088c7d), TOBN(0x5ab65710, 0x3207389f),
+           TOBN(0x1b09547f, 0xe7407a53), TOBN(0x2322f9d7, 0x4fdc6eab)},
+          {TOBN(0xc0f2f22d, 0x7430de4d), TOBN(0x19382696, 0xe68ca9a9),
+           TOBN(0x17f1eff1, 0x918e5868), TOBN(0xe3b5b635, 0x586f4204)}},
+         {{TOBN(0x146ef980, 0x3fbc4341), TOBN(0x359f2c80, 0x5b5eed4e),
+           TOBN(0x9f35744e, 0x7482e41d), TOBN(0x9a9ac3ec, 0xf3b224c2)},
+          {TOBN(0x9161a6fe, 0x91fc50ae), TOBN(0x89ccc66b, 0xc613fa7c),
+           TOBN(0x89268b14, 0xc732f15a), TOBN(0x7cd6f4e2, 0xb467ed03)}},
+         {{TOBN(0xfbf79869, 0xce56b40e), TOBN(0xf93e094c, 0xc02dde98),
+           TOBN(0xefe0c3a8, 0xedee2cd7), TOBN(0x90f3ffc0, 0xb268fd42)},
+          {TOBN(0x81a7fd56, 0x08241aed), TOBN(0x95ab7ad8, 0x00b1afe8),
+           TOBN(0x40127056, 0x3e310d52), TOBN(0xd3ffdeb1, 0x09d9fc43)}},
+         {{TOBN(0xc8f85c91, 0xd11a8594), TOBN(0x2e74d258, 0x31cf6db8),
+           TOBN(0x829c7ca3, 0x02b5dfd0), TOBN(0xe389cfbe, 0x69143c86)},
+          {TOBN(0xd01b6405, 0x941768d8), TOBN(0x45103995, 0x03bf825d),
+           TOBN(0xcc4ee166, 0x56cd17e2), TOBN(0xbea3c283, 0xba037e79)}},
+         {{TOBN(0x4e1ac06e, 0xd9a47520), TOBN(0xfbfe18aa, 0xaf852404),
+           TOBN(0x5615f8e2, 0x8087648a), TOBN(0x7301e47e, 0xb9d150d9)},
+          {TOBN(0x79f9f9dd, 0xb299b977), TOBN(0x76697a7b, 0xa5b78314),
+           TOBN(0x10d67468, 0x7d7c90e7), TOBN(0x7afffe03, 0x937210b5)}},
+         {{TOBN(0x5aef3e4b, 0x28c22cee), TOBN(0xefb0ecd8, 0x09fd55ae),
+           TOBN(0x4cea7132, 0x0d2a5d6a), TOBN(0x9cfb5fa1, 0x01db6357)},
+          {TOBN(0x395e0b57, 0xf36e1ac5), TOBN(0x008fa9ad, 0x36cafb7d),
+           TOBN(0x8f6cdf70, 0x5308c4db), TOBN(0x51527a37, 0x95ed2477)}},
+         {{TOBN(0xba0dee30, 0x5bd21311), TOBN(0x6ed41b22, 0x909c90d7),
+           TOBN(0xc5f6b758, 0x7c8696d3), TOBN(0x0db8eaa8, 0x3ce83a80)},
+          {TOBN(0xd297fe37, 0xb24b4b6f), TOBN(0xfe58afe8, 0x522d1f0d),
+           TOBN(0x97358736, 0x8c98dbd9), TOBN(0x6bc226ca, 0x9454a527)}},
+         {{TOBN(0xa12b384e, 0xce53c2d0), TOBN(0x779d897d, 0x5e4606da),
+           TOBN(0xa53e47b0, 0x73ec12b0), TOBN(0x462dbbba, 0x5756f1ad)},
+          {TOBN(0x69fe09f2, 0xcafe37b6), TOBN(0x273d1ebf, 0xecce2e17),
+           TOBN(0x8ac1d538, 0x3cf607fd), TOBN(0x8035f7ff, 0x12e10c25)}}},
+        {{{TOBN(0x854d34c7, 0x7e6c5520), TOBN(0xc27df9ef, 0xdcb9ea58),
+           TOBN(0x405f2369, 0xd686666d), TOBN(0x29d1febf, 0x0417aa85)},
+          {TOBN(0x9846819e, 0x93470afe), TOBN(0x3e6a9669, 0xe2a27f9e),
+           TOBN(0x24d008a2, 0xe31e6504), TOBN(0xdba7cecf, 0x9cb7680a)}},
+         {{TOBN(0xecaff541, 0x338d6e43), TOBN(0x56f7dd73, 0x4541d5cc),
+           TOBN(0xb5d426de, 0x96bc88ca), TOBN(0x48d94f6b, 0x9ed3a2c3)},
+          {TOBN(0x6354a3bb, 0x2ef8279c), TOBN(0xd575465b, 0x0b1867f2),
+           TOBN(0xef99b0ff, 0x95225151), TOBN(0xf3e19d88, 0xf94500d8)}},
+         {{TOBN(0x92a83268, 0xe32dd620), TOBN(0x913ec99f, 0x627849a2),
+           TOBN(0xedd8fdfa, 0x2c378882), TOBN(0xaf96f33e, 0xee6f8cfe)},
+          {TOBN(0xc06737e5, 0xdc3fa8a5), TOBN(0x236bb531, 0xb0b03a1d),
+           TOBN(0x33e59f29, 0x89f037b0), TOBN(0x13f9b5a7, 0xd9a12a53)}},
+         {{TOBN(0x0d0df6ce, 0x51efb310), TOBN(0xcb5b2eb4, 0x958df5be),
+           TOBN(0xd6459e29, 0x36158e59), TOBN(0x82aae2b9, 0x1466e336)},
+          {TOBN(0xfb658a39, 0x411aa636), TOBN(0x7152ecc5, 0xd4c0a933),
+           TOBN(0xf10c758a, 0x49f026b7), TOBN(0xf4837f97, 0xcb09311f)}},
+         {{TOBN(0xddfb02c4, 0xc753c45f), TOBN(0x18ca81b6, 0xf9c840fe),
+           TOBN(0x846fd09a, 0xb0f8a3e6), TOBN(0xb1162add, 0xe7733dbc)},
+          {TOBN(0x7070ad20, 0x236e3ab6), TOBN(0xf88cdaf5, 0xb2a56326),
+           TOBN(0x05fc8719, 0x997cbc7a), TOBN(0x442cd452, 0x4b665272)}},
+         {{TOBN(0x7807f364, 0xb71698f5), TOBN(0x6ba418d2, 0x9f7b605e),
+           TOBN(0xfd20b00f, 0xa03b2cbb), TOBN(0x883eca37, 0xda54386f)},
+          {TOBN(0xff0be43f, 0xf3437f24), TOBN(0xe910b432, 0xa48bb33c),
+           TOBN(0x4963a128, 0x329df765), TOBN(0xac1dd556, 0xbe2fe6f7)}},
+         {{TOBN(0x557610f9, 0x24a0a3fc), TOBN(0x38e17bf4, 0xe881c3f9),
+           TOBN(0x6ba84faf, 0xed0dac99), TOBN(0xd4a222c3, 0x59eeb918)},
+          {TOBN(0xc79c1dbe, 0x13f542b6), TOBN(0x1fc65e0d, 0xe425d457),
+           TOBN(0xeffb754f, 0x1debb779), TOBN(0x638d8fd0, 0x9e08af60)}},
+         {{TOBN(0x994f523a, 0x626332d5), TOBN(0x7bc38833, 0x5561bb44),
+           TOBN(0x005ed4b0, 0x3d845ea2), TOBN(0xd39d3ee1, 0xc2a1f08a)},
+          {TOBN(0x6561fdd3, 0xe7676b0d), TOBN(0x620e35ff, 0xfb706017),
+           TOBN(0x36ce424f, 0xf264f9a8), TOBN(0xc4c3419f, 0xda2681f7)}},
+         {{TOBN(0xfb6afd2f, 0x69beb6e8), TOBN(0x3a50b993, 0x6d700d03),
+           TOBN(0xc840b2ad, 0x0c83a14f), TOBN(0x573207be, 0x54085bef)},
+          {TOBN(0x5af882e3, 0x09fe7e5b), TOBN(0x957678a4, 0x3b40a7e1),
+           TOBN(0x172d4bdd, 0x543056e2), TOBN(0x9c1b26b4, 0x0df13c0a)}},
+         {{TOBN(0x1c30861c, 0xf405ff06), TOBN(0xebac86bd, 0x486e828b),
+           TOBN(0xe791a971, 0x636933fc), TOBN(0x50e7c2be, 0x7aeee947)},
+          {TOBN(0xc3d4a095, 0xfa90d767), TOBN(0xae60eb7b, 0xe670ab7b),
+           TOBN(0x17633a64, 0x397b056d), TOBN(0x93a21f33, 0x105012aa)}},
+         {{TOBN(0x663c370b, 0xabb88643), TOBN(0x91df36d7, 0x22e21599),
+           TOBN(0x183ba835, 0x8b761671), TOBN(0x381eea1d, 0x728f3bf1)},
+          {TOBN(0xb9b2f1ba, 0x39966e6c), TOBN(0x7c464a28, 0xe7295492),
+           TOBN(0x0fd5f70a, 0x09b26b7f), TOBN(0xa9aba1f9, 0xfbe009df)}},
+         {{TOBN(0x857c1f22, 0x369b87ad), TOBN(0x3c00e5d9, 0x32fca556),
+           TOBN(0x1ad74cab, 0x90b06466), TOBN(0xa7112386, 0x550faaf2)},
+          {TOBN(0x7435e198, 0x6d9bd5f5), TOBN(0x2dcc7e38, 0x59c3463f),
+           TOBN(0xdc7df748, 0xca7bd4b2), TOBN(0x13cd4c08, 0x9dec2f31)}},
+         {{TOBN(0x0d3b5df8, 0xe3237710), TOBN(0x0dadb26e, 0xcbd2f7b0),
+           TOBN(0x9f5966ab, 0xe4aa082b), TOBN(0x666ec8de, 0x350e966e)},
+          {TOBN(0x1bfd1ed5, 0xee524216), TOBN(0xcd93c59b, 0x41dab0b6),
+           TOBN(0x658a8435, 0xd186d6ba), TOBN(0x1b7d34d2, 0x159d1195)}},
+         {{TOBN(0x5936e460, 0x22caf46b), TOBN(0x6a45dd8f, 0x9a96fe4f),
+           TOBN(0xf7925434, 0xb98f474e), TOBN(0x41410412, 0x0053ef15)},
+          {TOBN(0x71cf8d12, 0x41de97bf), TOBN(0xb8547b61, 0xbd80bef4),
+           TOBN(0xb47d3970, 0xc4db0037), TOBN(0xf1bcd328, 0xfef20dff)}},
+         {{TOBN(0x31a92e09, 0x10caad67), TOBN(0x1f591960, 0x5531a1e1),
+           TOBN(0x3bb852e0, 0x5f4fc840), TOBN(0x63e297ca, 0x93a72c6c)},
+          {TOBN(0x3c2b0b2e, 0x49abad67), TOBN(0x6ec405fc, 0xed3db0d9),
+           TOBN(0xdc14a530, 0x7fef1d40), TOBN(0xccd19846, 0x280896fc)}},
+         {{TOBN(0x00f83176, 0x9bb81648), TOBN(0xd69eb485, 0x653120d0),
+           TOBN(0xd17d75f4, 0x4ccabc62), TOBN(0x34a07f82, 0xb749fcb1)},
+          {TOBN(0x2c3af787, 0xbbfb5554), TOBN(0xb06ed4d0, 0x62e283f8),
+           TOBN(0x5722889f, 0xa19213a0), TOBN(0x162b085e, 0xdcf3c7b4)}},
+         {{TOBN(0xbcaecb31, 0xe0dd3eca), TOBN(0xc6237fbc, 0xe52f13a5),
+           TOBN(0xcc2b6b03, 0x27bac297), TOBN(0x2ae1cac5, 0xb917f54a)},
+          {TOBN(0x474807d4, 0x7845ae4f), TOBN(0xfec7dd92, 0xce5972e0),
+           TOBN(0xc3bd2541, 0x1d7915bb), TOBN(0x66f85dc4, 0xd94907ca)}},
+         {{TOBN(0xd981b888, 0xbdbcf0ca), TOBN(0xd75f5da6, 0xdf279e9f),
+           TOBN(0x128bbf24, 0x7054e934), TOBN(0x3c6ff6e5, 0x81db134b)},
+          {TOBN(0x795b7cf4, 0x047d26e4), TOBN(0xf370f7b8, 0x5049ec37),
+           TOBN(0xc6712d4d, 0xced945af), TOBN(0xdf30b5ec, 0x095642bc)}},
+         {{TOBN(0x9b034c62, 0x4896246e), TOBN(0x5652c016, 0xee90bbd1),
+           TOBN(0xeb38636f, 0x87fedb73), TOBN(0x5e32f847, 0x0135a613)},
+          {TOBN(0x0703b312, 0xcf933c83), TOBN(0xd05bb76e, 0x1a7f47e6),
+           TOBN(0x825e4f0c, 0x949c2415), TOBN(0x569e5622, 0x7250d6f8)}},
+         {{TOBN(0xbbe9eb3a, 0x6568013e), TOBN(0x8dbd203f, 0x22f243fc),
+           TOBN(0x9dbd7694, 0xb342734a), TOBN(0x8f6d12f8, 0x46afa984)},
+          {TOBN(0xb98610a2, 0xc9eade29), TOBN(0xbab4f323, 0x47dd0f18),
+           TOBN(0x5779737b, 0x671c0d46), TOBN(0x10b6a7c6, 0xd3e0a42a)}},
+         {{TOBN(0xfb19ddf3, 0x3035b41c), TOBN(0xd336343f, 0x99c45895),
+           TOBN(0x61fe4938, 0x54c857e5), TOBN(0xc4d506be, 0xae4e57d5)},
+          {TOBN(0x3cd8c8cb, 0xbbc33f75), TOBN(0x7281f08a, 0x9262c77d),
+           TOBN(0x083f4ea6, 0xf11a2823), TOBN(0x8895041e, 0x9fba2e33)}},
+         {{TOBN(0xfcdfea49, 0x9c438edf), TOBN(0x7678dcc3, 0x91edba44),
+           TOBN(0xf07b3b87, 0xe2ba50f0), TOBN(0xc13888ef, 0x43948c1b)},
+          {TOBN(0xc2135ad4, 0x1140af42), TOBN(0x8e5104f3, 0x926ed1a7),
+           TOBN(0xf24430cb, 0x88f6695f), TOBN(0x0ce0637b, 0x6d73c120)}},
+         {{TOBN(0xb2db01e6, 0xfe631e8f), TOBN(0x1c5563d7, 0xd7bdd24b),
+           TOBN(0x8daea3ba, 0x369ad44f), TOBN(0x000c81b6, 0x8187a9f9)},
+          {TOBN(0x5f48a951, 0xaae1fd9a), TOBN(0xe35626c7, 0x8d5aed8a),
+           TOBN(0x20952763, 0x0498c622), TOBN(0x76d17634, 0x773aa504)}},
+         {{TOBN(0x36d90dda, 0xeb300f7a), TOBN(0x9dcf7dfc, 0xedb5e801),
+           TOBN(0x645cb268, 0x74d5244c), TOBN(0xa127ee79, 0x348e3aa2)},
+          {TOBN(0x488acc53, 0x575f1dbb), TOBN(0x95037e85, 0x80e6161e),
+           TOBN(0x57e59283, 0x292650d0), TOBN(0xabe67d99, 0x14938216)}},
+         {{TOBN(0x3c7f944b, 0x3f8e1065), TOBN(0xed908cb6, 0x330e8924),
+           TOBN(0x08ee8fd5, 0x6f530136), TOBN(0x2227b7d5, 0xd7ffc169)},
+          {TOBN(0x4f55c893, 0xb5cd6dd5), TOBN(0x82225e11, 0xa62796e8),
+           TOBN(0x5c6cead1, 0xcb18e12c), TOBN(0x4381ae0c, 0x84f5a51a)}},
+         {{TOBN(0x345913d3, 0x7fafa4c8), TOBN(0x3d918082, 0x0491aac0),
+           TOBN(0x9347871f, 0x3e69264c), TOBN(0xbea9dd3c, 0xb4f4f0cd)},
+          {TOBN(0xbda5d067, 0x3eadd3e7), TOBN(0x0033c1b8, 0x0573bcd8),
+           TOBN(0x25589379, 0x5da2486c), TOBN(0xcb89ee5b, 0x86abbee7)}},
+         {{TOBN(0x8fe0a8f3, 0x22532e5d), TOBN(0xb6410ff0, 0x727dfc4c),
+           TOBN(0x619b9d58, 0x226726db), TOBN(0x5ec25669, 0x7a2b2dc7)},
+          {TOBN(0xaf4d2e06, 0x4c3beb01), TOBN(0x852123d0, 0x7acea556),
+           TOBN(0x0e9470fa, 0xf783487a), TOBN(0x75a7ea04, 0x5664b3eb)}},
+         {{TOBN(0x4ad78f35, 0x6798e4ba), TOBN(0x9214e6e5, 0xc7d0e091),
+           TOBN(0xc420b488, 0xb1290403), TOBN(0x64049e0a, 0xfc295749)},
+          {TOBN(0x03ef5af1, 0x3ae9841f), TOBN(0xdbe4ca19, 0xb0b662a6),
+           TOBN(0x46845c5f, 0xfa453458), TOBN(0xf8dabf19, 0x10b66722)}},
+         {{TOBN(0xb650f0aa, 0xcce2793b), TOBN(0x71db851e, 0xc5ec47c1),
+           TOBN(0x3eb78f3e, 0x3b234fa9), TOBN(0xb0c60f35, 0xfc0106ce)},
+          {TOBN(0x05427121, 0x774eadbd), TOBN(0x25367faf, 0xce323863),
+           TOBN(0x7541b5c9, 0xcd086976), TOBN(0x4ff069e2, 0xdc507ad1)}},
+         {{TOBN(0x74145256, 0x8776e667), TOBN(0x6e76142c, 0xb23c6bb5),
+           TOBN(0xdbf30712, 0x1b3a8a87), TOBN(0x60e7363e, 0x98450836)},
+          {TOBN(0x5741450e, 0xb7366d80), TOBN(0xe4ee14ca, 0x4837dbdf),
+           TOBN(0xa765eb9b, 0x69d4316f), TOBN(0x04548dca, 0x8ef43825)}},
+         {{TOBN(0x9c9f4e4c, 0x5ae888eb), TOBN(0x733abb51, 0x56e9ac99),
+           TOBN(0xdaad3c20, 0xba6ac029), TOBN(0x9b8dd3d3, 0x2ba3e38e)},
+          {TOBN(0xa9bb4c92, 0x0bc5d11a), TOBN(0xf20127a7, 0x9c5f88a3),
+           TOBN(0x4f52b06e, 0x161d3cb8), TOBN(0x26c1ff09, 0x6afaf0a6)}},
+         {{TOBN(0x32670d2f, 0x7189e71f), TOBN(0xc6438748, 0x5ecf91e7),
+           TOBN(0x15758e57, 0xdb757a21), TOBN(0x427d09f8, 0x290a9ce5)},
+          {TOBN(0x846a308f, 0x38384a7a), TOBN(0xaac3acb4, 0xb0732b99),
+           TOBN(0x9e941009, 0x17845819), TOBN(0x95cba111, 0xa7ce5e03)}},
+         {{TOBN(0x6f3d4f7f, 0xb00009c4), TOBN(0xb8396c27, 0x8ff28b5f),
+           TOBN(0xb1a9ae43, 0x1c97975d), TOBN(0x9d7ba8af, 0xe5d9fed5)},
+          {TOBN(0x338cf09f, 0x34f485b6), TOBN(0xbc0ddacc, 0x64122516),
+           TOBN(0xa450da12, 0x05d471fe), TOBN(0x4c3a6250, 0x628dd8c9)}},
+         {{TOBN(0x69c7d103, 0xd1295837), TOBN(0xa2893e50, 0x3807eb2f),
+           TOBN(0xd6e1e1de, 0xbdb41491), TOBN(0xc630745b, 0x5e138235)},
+          {TOBN(0xc892109e, 0x48661ae1), TOBN(0x8d17e7eb, 0xea2b2674),
+           TOBN(0x00ec0f87, 0xc328d6b5), TOBN(0x6d858645, 0xf079ff9e)}},
+         {{TOBN(0x6cdf243e, 0x19115ead), TOBN(0x1ce1393e, 0x4bac4fcf),
+           TOBN(0x2c960ed0, 0x9c29f25b), TOBN(0x59be4d8e, 0x9d388a05)},
+          {TOBN(0x0d46e06c, 0xd0def72b), TOBN(0xb923db5d, 0xe0342748),
+           TOBN(0xf7d3aacd, 0x936d4a3d), TOBN(0x558519cc, 0x0b0b099e)}},
+         {{TOBN(0x3ea8ebf8, 0x827097ef), TOBN(0x259353db, 0xd054f55d),
+           TOBN(0x84c89abc, 0x6d2ed089), TOBN(0x5c548b69, 0x8e096a7c)},
+          {TOBN(0xd587f616, 0x994b995d), TOBN(0x4d1531f6, 0xa5845601),
+           TOBN(0x792ab31e, 0x451fd9f0), TOBN(0xc8b57bb2, 0x65adf6ca)}},
+         {{TOBN(0x68440fcb, 0x1cd5ad73), TOBN(0xb9c860e6, 0x6144da4f),
+           TOBN(0x2ab286aa, 0x8462beb8), TOBN(0xcc6b8fff, 0xef46797f)},
+          {TOBN(0xac820da4, 0x20c8a471), TOBN(0x69ae05a1, 0x77ff7faf),
+           TOBN(0xb9163f39, 0xbfb5da77), TOBN(0xbd03e590, 0x2c73ab7a)}},
+         {{TOBN(0x7e862b5e, 0xb2940d9e), TOBN(0x3c663d86, 0x4b9af564),
+           TOBN(0xd8309031, 0xbde3033d), TOBN(0x298231b2, 0xd42c5bc6)},
+          {TOBN(0x42090d2c, 0x552ad093), TOBN(0xa4799d1c, 0xff854695),
+           TOBN(0x0a88b5d6, 0xd31f0d00), TOBN(0xf8b40825, 0xa2f26b46)}},
+         {{TOBN(0xec29b1ed, 0xf1bd7218), TOBN(0xd491c53b, 0x4b24c86e),
+           TOBN(0xd2fe588f, 0x3395ea65), TOBN(0x6f3764f7, 0x4456ef15)},
+          {TOBN(0xdb43116d, 0xcdc34800), TOBN(0xcdbcd456, 0xc1e33955),
+           TOBN(0xefdb5540, 0x74ab286b), TOBN(0x948c7a51, 0xd18c5d7c)}},
+         {{TOBN(0xeb81aa37, 0x7378058e), TOBN(0x41c746a1, 0x04411154),
+           TOBN(0xa10c73bc, 0xfb828ac7), TOBN(0x6439be91, 0x9d972b29)},
+          {TOBN(0x4bf3b4b0, 0x43a2fbad), TOBN(0x39e6dadf, 0x82b5e840),
+           TOBN(0x4f716408, 0x6397bd4c), TOBN(0x0f7de568, 0x7f1eeccb)}},
+         {{TOBN(0x5865c5a1, 0xd2ffbfc1), TOBN(0xf74211fa, 0x4ccb6451),
+           TOBN(0x66368a88, 0xc0b32558), TOBN(0x5b539dc2, 0x9ad7812e)},
+          {TOBN(0x579483d0, 0x2f3af6f6), TOBN(0x52132078, 0x99934ece),
+           TOBN(0x50b9650f, 0xdcc9e983), TOBN(0xca989ec9, 0xaee42b8a)}},
+         {{TOBN(0x6a44c829, 0xd6f62f99), TOBN(0x8f06a309, 0x4c2a7c0c),
+           TOBN(0x4ea2b3a0, 0x98a0cb0a), TOBN(0x5c547b70, 0xbeee8364)},
+          {TOBN(0x461d40e1, 0x682afe11), TOBN(0x9e0fc77a, 0x7b41c0a8),
+           TOBN(0x79e4aefd, 0xe20d5d36), TOBN(0x2916e520, 0x32dd9f63)}},
+         {{TOBN(0xf59e52e8, 0x3f883faf), TOBN(0x396f9639, 0x2b868d35),
+           TOBN(0xc902a9df, 0x4ca19881), TOBN(0x0fc96822, 0xdb2401a6)},
+          {TOBN(0x41237587, 0x66f1c68d), TOBN(0x10fc6de3, 0xfb476c0d),
+           TOBN(0xf8b6b579, 0x841f5d90), TOBN(0x2ba8446c, 0xfa24f44a)}},
+         {{TOBN(0xa237b920, 0xef4a9975), TOBN(0x60bb6004, 0x2330435f),
+           TOBN(0xd6f4ab5a, 0xcfb7e7b5), TOBN(0xb2ac5097, 0x83435391)},
+          {TOBN(0xf036ee2f, 0xb0d1ea67), TOBN(0xae779a6a, 0x74c56230),
+           TOBN(0x59bff8c8, 0xab838ae6), TOBN(0xcd83ca99, 0x9b38e6f0)}},
+         {{TOBN(0xbb27bef5, 0xe33deed3), TOBN(0xe6356f6f, 0x001892a8),
+           TOBN(0xbf3be6cc, 0x7adfbd3e), TOBN(0xaecbc81c, 0x33d1ac9d)},
+          {TOBN(0xe4feb909, 0xe6e861dc), TOBN(0x90a247a4, 0x53f5f801),
+           TOBN(0x01c50acb, 0x27346e57), TOBN(0xce29242e, 0x461acc1b)}},
+         {{TOBN(0x04dd214a, 0x2f998a91), TOBN(0x271ee9b1, 0xd4baf27b),
+           TOBN(0x7e3027d1, 0xe8c26722), TOBN(0x21d1645c, 0x1820dce5)},
+          {TOBN(0x086f242c, 0x7501779c), TOBN(0xf0061407, 0xfa0e8009),
+           TOBN(0xf23ce477, 0x60187129), TOBN(0x05bbdedb, 0x0fde9bd0)}},
+         {{TOBN(0x682f4832, 0x25d98473), TOBN(0xf207fe85, 0x5c658427),
+           TOBN(0xb6fdd7ba, 0x4166ffa1), TOBN(0x0c314056, 0x9eed799d)},
+          {TOBN(0x0db8048f, 0x4107e28f), TOBN(0x74ed3871, 0x41216840),
+           TOBN(0x74489f8f, 0x56a3c06e), TOBN(0x1e1c005b, 0x12777134)}},
+         {{TOBN(0xdb332a73, 0xf37ec3c3), TOBN(0xc65259bd, 0xdd59eba0),
+           TOBN(0x2291709c, 0xdb4d3257), TOBN(0x9a793b25, 0xbd389390)},
+          {TOBN(0xf39fe34b, 0xe43756f0), TOBN(0x2f76bdce, 0x9afb56c9),
+           TOBN(0x9f37867a, 0x61208b27), TOBN(0xea1d4307, 0x089972c3)}},
+         {{TOBN(0x8c595330, 0x8bdf623a), TOBN(0x5f5accda, 0x8441fb7d),
+           TOBN(0xfafa9418, 0x32ddfd95), TOBN(0x6ad40c5a, 0x0fde9be7)},
+          {TOBN(0x43faba89, 0xaeca8709), TOBN(0xc64a7cf1, 0x2c248a9d),
+           TOBN(0x16620252, 0x72637a76), TOBN(0xaee1c791, 0x22b8d1bb)}},
+         {{TOBN(0xf0f798fd, 0x21a843b2), TOBN(0x56e4ed4d, 0x8d005cb1),
+           TOBN(0x355f7780, 0x1f0d8abe), TOBN(0x197b04cf, 0x34522326)},
+          {TOBN(0x41f9b31f, 0xfd42c13f), TOBN(0x5ef7feb2, 0xb40f933d),
+           TOBN(0x27326f42, 0x5d60bad4), TOBN(0x027ecdb2, 0x8c92cf89)}},
+         {{TOBN(0x04aae4d1, 0x4e3352fe), TOBN(0x08414d2f, 0x73591b90),
+           TOBN(0x5ed6124e, 0xb7da7d60), TOBN(0xb985b931, 0x4d13d4ec)},
+          {TOBN(0xa592d3ab, 0x96bf36f9), TOBN(0x012dbed5, 0xbbdf51df),
+           TOBN(0xa57963c0, 0xdf6c177d), TOBN(0x010ec869, 0x87ca29cf)}},
+         {{TOBN(0xba1700f6, 0xbf926dff), TOBN(0x7c9fdbd1, 0xf4bf6bc2),
+           TOBN(0xdc18dc8f, 0x64da11f5), TOBN(0xa6074b7a, 0xd938ae75)},
+          {TOBN(0x14270066, 0xe84f44a4), TOBN(0x99998d38, 0xd27b954e),
+           TOBN(0xc1be8ab2, 0xb4f38e9a), TOBN(0x8bb55bbf, 0x15c01016)}},
+         {{TOBN(0xf73472b4, 0x0ea2ab30), TOBN(0xd365a340, 0xf73d68dd),
+           TOBN(0xc01a7168, 0x19c2e1eb), TOBN(0x32f49e37, 0x34061719)},
+          {TOBN(0xb73c57f1, 0x01d8b4d6), TOBN(0x03c8423c, 0x26b47700),
+           TOBN(0x321d0bc8, 0xa4d8826a), TOBN(0x6004213c, 0x4bc0e638)}},
+         {{TOBN(0xf78c64a1, 0xc1c06681), TOBN(0x16e0a16f, 0xef018e50),
+           TOBN(0x31cbdf91, 0xdb42b2b3), TOBN(0xf8f4ffce, 0xe0d36f58)},
+          {TOBN(0xcdcc71cd, 0x4cc5e3e0), TOBN(0xd55c7cfa, 0xa129e3e0),
+           TOBN(0xccdb6ba0, 0x0fb2cbf1), TOBN(0x6aba0005, 0xc4bce3cb)}},
+         {{TOBN(0x501cdb30, 0xd232cfc4), TOBN(0x9ddcf12e, 0xd58a3cef),
+           TOBN(0x02d2cf9c, 0x87e09149), TOBN(0xdc5d7ec7, 0x2c976257)},
+          {TOBN(0x6447986e, 0x0b50d7dd), TOBN(0x88fdbaf7, 0x807f112a),
+           TOBN(0x58c9822a, 0xb00ae9f6), TOBN(0x6abfb950, 0x6d3d27e0)}},
+         {{TOBN(0xd0a74487, 0x8a429f4f), TOBN(0x0649712b, 0xdb516609),
+           TOBN(0xb826ba57, 0xe769b5df), TOBN(0x82335df2, 0x1fc7aaf2)},
+          {TOBN(0x2389f067, 0x5c93d995), TOBN(0x59ac367a, 0x68677be6),
+           TOBN(0xa77985ff, 0x21d9951b), TOBN(0x038956fb, 0x85011cce)}},
+         {{TOBN(0x608e48cb, 0xbb734e37), TOBN(0xc08c0bf2, 0x2be5b26f),
+           TOBN(0x17bbdd3b, 0xf9b1a0d9), TOBN(0xeac7d898, 0x10483319)},
+          {TOBN(0xc95c4baf, 0xbc1a6dea), TOBN(0xfdd0e2bf, 0x172aafdb),
+           TOBN(0x40373cbc, 0x8235c41a), TOBN(0x14303f21, 0xfb6f41d5)}},
+         {{TOBN(0xba063621, 0x0408f237), TOBN(0xcad3b09a, 0xecd2d1ed),
+           TOBN(0x4667855a, 0x52abb6a2), TOBN(0xba9157dc, 0xaa8b417b)},
+          {TOBN(0xfe7f3507, 0x4f013efb), TOBN(0x1b112c4b, 0xaa38c4a2),
+           TOBN(0xa1406a60, 0x9ba64345), TOBN(0xe53cba33, 0x6993c80b)}},
+         {{TOBN(0x45466063, 0xded40d23), TOBN(0x3d5f1f4d, 0x54908e25),
+           TOBN(0x9ebefe62, 0x403c3c31), TOBN(0x274ea0b5, 0x0672a624)},
+          {TOBN(0xff818d99, 0x451d1b71), TOBN(0x80e82643, 0x8f79cf79),
+           TOBN(0xa165df13, 0x73ce37f5), TOBN(0xa744ef4f, 0xfe3a21fd)}},
+         {{TOBN(0x73f1e7f5, 0xcf551396), TOBN(0xc616898e, 0x868c676b),
+           TOBN(0x671c28c7, 0x8c442c36), TOBN(0xcfe5e558, 0x5e0a317d)},
+          {TOBN(0x1242d818, 0x7051f476), TOBN(0x56fad2a6, 0x14f03442),
+           TOBN(0x262068bc, 0x0a44d0f6), TOBN(0xdfa2cd6e, 0xce6edf4e)}},
+         {{TOBN(0x0f43813a, 0xd15d1517), TOBN(0x61214cb2, 0x377d44f5),
+           TOBN(0xd399aa29, 0xc639b35f), TOBN(0x42136d71, 0x54c51c19)},
+          {TOBN(0x9774711b, 0x08417221), TOBN(0x0a5546b3, 0x52545a57),
+           TOBN(0x80624c41, 0x1150582d), TOBN(0x9ec5c418, 0xfbc555bc)}},
+         {{TOBN(0x2c87dcad, 0x771849f1), TOBN(0xb0c932c5, 0x01d7bf6f),
+           TOBN(0x6aa5cd3e, 0x89116eb2), TOBN(0xd378c25a, 0x51ca7bd3)},
+          {TOBN(0xc612a0da, 0x9e6e3e31), TOBN(0x0417a54d, 0xb68ad5d0),
+           TOBN(0x00451e4a, 0x22c6edb8), TOBN(0x9fbfe019, 0xb42827ce)}},
+         {{TOBN(0x2fa92505, 0xba9384a2), TOBN(0x21b8596e, 0x64ad69c1),
+           TOBN(0x8f4fcc49, 0x983b35a6), TOBN(0xde093760, 0x72754672)},
+          {TOBN(0x2f14ccc8, 0xf7bffe6d), TOBN(0x27566bff, 0x5d94263d),
+           TOBN(0xb5b4e9c6, 0x2df3ec30), TOBN(0x94f1d7d5, 0x3e6ea6ba)}},
+         {{TOBN(0x97b7851a, 0xaaca5e9b), TOBN(0x518aa521, 0x56713b97),
+           TOBN(0x3357e8c7, 0x150a61f6), TOBN(0x7842e7e2, 0xec2c2b69)},
+          {TOBN(0x8dffaf65, 0x6868a548), TOBN(0xd963bd82, 0xe068fc81),
+           TOBN(0x64da5c8b, 0x65917733), TOBN(0x927090ff, 0x7b247328)}}},
+        {{{TOBN(0x214bc9a7, 0xd298c241), TOBN(0xe3b697ba, 0x56807cfd),
+           TOBN(0xef1c7802, 0x4564eadb), TOBN(0xdde8cdcf, 0xb48149c5)},
+          {TOBN(0x946bf0a7, 0x5a4d2604), TOBN(0x27154d7f, 0x6c1538af),
+           TOBN(0x95cc9230, 0xde5b1fcc), TOBN(0xd88519e9, 0x66864f82)}},
+         {{TOBN(0xb828dd1a, 0x7cb1282c), TOBN(0xa08d7626, 0xbe46973a),
+           TOBN(0x6baf8d40, 0xe708d6b2), TOBN(0x72571fa1, 0x4daeb3f3)},
+          {TOBN(0x85b1732f, 0xf22dfd98), TOBN(0x87ab01a7, 0x0087108d),
+           TOBN(0xaaaafea8, 0x5988207a), TOBN(0xccc832f8, 0x69f00755)}},
+         {{TOBN(0x964d950e, 0x36ff3bf0), TOBN(0x8ad20f6f, 0xf0b34638),
+           TOBN(0x4d9177b3, 0xb5d7585f), TOBN(0xcf839760, 0xef3f019f)},
+          {TOBN(0x582fc5b3, 0x8288c545), TOBN(0x2f8e4e9b, 0x13116bd1),
+           TOBN(0xf91e1b2f, 0x332120ef), TOBN(0xcf568724, 0x2a17dd23)}},
+         {{TOBN(0x488f1185, 0xca8d9d1a), TOBN(0xadf2c77d, 0xd987ded2),
+           TOBN(0x5f3039f0, 0x60c46124), TOBN(0xe5d70b75, 0x71e095f4)},
+          {TOBN(0x82d58650, 0x6260e70f), TOBN(0x39d75ea7, 0xf750d105),
+           TOBN(0x8cf3d0b1, 0x75bac364), TOBN(0xf3a7564d, 0x21d01329)}},
+         {{TOBN(0x182f04cd, 0x2f52d2a7), TOBN(0x4fde149a, 0xe2df565a),
+           TOBN(0xb80c5eec, 0xa79fb2f7), TOBN(0xab491d7b, 0x22ddc897)},
+          {TOBN(0x99d76c18, 0xc6312c7f), TOBN(0xca0d5f3d, 0x6aa41a57),
+           TOBN(0x71207325, 0xd15363a0), TOBN(0xe82aa265, 0xbeb252c2)}},
+         {{TOBN(0x94ab4700, 0xec3128c2), TOBN(0x6c76d862, 0x8e383f49),
+           TOBN(0xdc36b150, 0xc03024eb), TOBN(0xfb439477, 0x53daac69)},
+          {TOBN(0xfc68764a, 0x8dc79623), TOBN(0x5b86995d, 0xb440fbb2),
+           TOBN(0xd66879bf, 0xccc5ee0d), TOBN(0x05228942, 0x95aa8bd3)}},
+         {{TOBN(0xb51a40a5, 0x1e6a75c1), TOBN(0x24327c76, 0x0ea7d817),
+           TOBN(0x06630182, 0x07774597), TOBN(0xd6fdbec3, 0x97fa7164)},
+          {TOBN(0x20c99dfb, 0x13c90f48), TOBN(0xd6ac5273, 0x686ef263),
+           TOBN(0xc6a50bdc, 0xfef64eeb), TOBN(0xcd87b281, 0x86fdfc32)}},
+         {{TOBN(0xb24aa43e, 0x3fcd3efc), TOBN(0xdd26c034, 0xb8088e9a),
+           TOBN(0xa5ef4dc9, 0xbd3d46ea), TOBN(0xa2f99d58, 0x8a4c6a6f)},
+          {TOBN(0xddabd355, 0x2f1da46c), TOBN(0x72c3f8ce, 0x1afacdd1),
+           TOBN(0xd90c4eee, 0x92d40578), TOBN(0xd28bb41f, 0xca623b94)}},
+         {{TOBN(0x50fc0711, 0x745edc11), TOBN(0x9dd9ad7d, 0x3dc87558),
+           TOBN(0xce6931fb, 0xb49d1e64), TOBN(0x6c77a0a2, 0xc98bd0f9)},
+          {TOBN(0x62b9a629, 0x6baf7cb1), TOBN(0xcf065f91, 0xccf72d22),
+           TOBN(0x7203cce9, 0x79639071), TOBN(0x09ae4885, 0xf9cb732f)}},
+         {{TOBN(0x5e7c3bec, 0xee8314f3), TOBN(0x1c068aed, 0xdbea298f),
+           TOBN(0x08d381f1, 0x7c80acec), TOBN(0x03b56be8, 0xe330495b)},
+          {TOBN(0xaeffb8f2, 0x9222882d), TOBN(0x95ff38f6, 0xc4af8bf7),
+           TOBN(0x50e32d35, 0x1fc57d8c), TOBN(0x6635be52, 0x17b444f0)}},
+         {{TOBN(0x04d15276, 0xa5177900), TOBN(0x4e1dbb47, 0xf6858752),
+           TOBN(0x5b475622, 0xc615796c), TOBN(0xa6fa0387, 0x691867bf)},
+          {TOBN(0xed7f5d56, 0x2844c6d0), TOBN(0xc633cf9b, 0x03a2477d),
+           TOBN(0xf6be5c40, 0x2d3721d6), TOBN(0xaf312eb7, 0xe9fd68e6)}},
+         {{TOBN(0x242792d2, 0xe7417ce1), TOBN(0xff42bc71, 0x970ee7f5),
+           TOBN(0x1ff4dc6d, 0x5c67a41e), TOBN(0x77709b7b, 0x20882a58)},
+          {TOBN(0x3554731d, 0xbe217f2c), TOBN(0x2af2a8cd, 0x5bb72177),
+           TOBN(0x58eee769, 0x591dd059), TOBN(0xbb2930c9, 0x4bba6477)}},
+         {{TOBN(0x863ee047, 0x7d930cfc), TOBN(0x4c262ad1, 0x396fd1f4),
+           TOBN(0xf4765bc8, 0x039af7e1), TOBN(0x2519834b, 0x5ba104f6)},
+          {TOBN(0x7cd61b4c, 0xd105f961), TOBN(0xa5415da5, 0xd63bca54),
+           TOBN(0x778280a0, 0x88a1f17c), TOBN(0xc4968949, 0x2329512c)}},
+         {{TOBN(0x174a9126, 0xcecdaa7a), TOBN(0xfc8c7e0e, 0x0b13247b),
+           TOBN(0x29c110d2, 0x3484c1c4), TOBN(0xf8eb8757, 0x831dfc3b)},
+          {TOBN(0x022f0212, 0xc0067452), TOBN(0x3f6f69ee, 0x7b9b926c),
+           TOBN(0x09032da0, 0xef42daf4), TOBN(0x79f00ade, 0x83f80de4)}},
+         {{TOBN(0x6210db71, 0x81236c97), TOBN(0x74f7685b, 0x3ee0781f),
+           TOBN(0x4df7da7b, 0xa3e41372), TOBN(0x2aae38b1, 0xb1a1553e)},
+          {TOBN(0x1688e222, 0xf6dd9d1b), TOBN(0x57695448, 0x5b8b6487),
+           TOBN(0x478d2127, 0x4b2edeaa), TOBN(0xb2818fa5, 0x1e85956a)}},
+         {{TOBN(0x1e6addda, 0xf176f2c0), TOBN(0x01ca4604, 0xe2572658),
+           TOBN(0x0a404ded, 0x85342ffb), TOBN(0x8cf60f96, 0x441838d6)},
+          {TOBN(0x9bbc691c, 0xc9071c4a), TOBN(0xfd588744, 0x34442803),
+           TOBN(0x97101c85, 0x809c0d81), TOBN(0xa7fb754c, 0x8c456f7f)}},
+         {{TOBN(0xc95f3c5c, 0xd51805e1), TOBN(0xab4ccd39, 0xb299dca8),
+           TOBN(0x3e03d20b, 0x47eaf500), TOBN(0xfa3165c1, 0xd7b80893)},
+          {TOBN(0x005e8b54, 0xe160e552), TOBN(0xdc4972ba, 0x9019d11f),
+           TOBN(0x21a6972e, 0x0c9a4a7a), TOBN(0xa52c258f, 0x37840fd7)}},
+         {{TOBN(0xf8559ff4, 0xc1e99d81), TOBN(0x08e1a7d6, 0xa3c617c0),
+           TOBN(0xb398fd43, 0x248c6ba7), TOBN(0x6ffedd91, 0xd1283794)},
+          {TOBN(0x8a6a59d2, 0xd629d208), TOBN(0xa9d141d5, 0x3490530e),
+           TOBN(0x42f6fc18, 0x38505989), TOBN(0x09bf250d, 0x479d94ee)}},
+         {{TOBN(0x223ad3b1, 0xb3822790), TOBN(0x6c5926c0, 0x93b8971c),
+           TOBN(0x609efc7e, 0x75f7fa62), TOBN(0x45d66a6d, 0x1ec2d989)},
+          {TOBN(0x4422d663, 0x987d2792), TOBN(0x4a73caad, 0x3eb31d2b),
+           TOBN(0xf06c2ac1, 0xa32cb9e6), TOBN(0xd9445c5f, 0x91aeba84)}},
+         {{TOBN(0x6af7a1d5, 0xaf71013f), TOBN(0xe68216e5, 0x0bedc946),
+           TOBN(0xf4cba30b, 0xd27370a0), TOBN(0x7981afbf, 0x870421cc)},
+          {TOBN(0x02496a67, 0x9449f0e1), TOBN(0x86cfc4be, 0x0a47edae),
+           TOBN(0x3073c936, 0xb1feca22), TOBN(0xf5694612, 0x03f8f8fb)}},
+         {{TOBN(0xd063b723, 0x901515ea), TOBN(0x4c6c77a5, 0x749cf038),
+           TOBN(0x6361e360, 0xab9e5059), TOBN(0x596cf171, 0xa76a37c0)},
+          {TOBN(0x800f53fa, 0x6530ae7a), TOBN(0x0f5e631e, 0x0792a7a6),
+           TOBN(0x5cc29c24, 0xefdb81c9), TOBN(0xa269e868, 0x3f9c40ba)}},
+         {{TOBN(0xec14f9e1, 0x2cb7191e), TOBN(0x78ea1bd8, 0xe5b08ea6),
+           TOBN(0x3c65aa9b, 0x46332bb9), TOBN(0x84cc22b3, 0xbf80ce25)},
+          {TOBN(0x0098e9e9, 0xd49d5bf1), TOBN(0xcd4ec1c6, 0x19087da4),
+           TOBN(0x3c9d07c5, 0xaef6e357), TOBN(0x839a0268, 0x9f8f64b8)}},
+         {{TOBN(0xc5e9eb62, 0xc6d8607f), TOBN(0x759689f5, 0x6aa995e4),
+           TOBN(0x70464669, 0xbbb48317), TOBN(0x921474bf, 0xe402417d)},
+          {TOBN(0xcabe135b, 0x2a354c8c), TOBN(0xd51e52d2, 0x812fa4b5),
+           TOBN(0xec741096, 0x53311fe8), TOBN(0x4f774535, 0xb864514b)}},
+         {{TOBN(0xbcadd671, 0x5bde48f8), TOBN(0xc9703873, 0x2189bc7d),
+           TOBN(0x5d45299e, 0xc709ee8a), TOBN(0xd1287ee2, 0x845aaff8)},
+          {TOBN(0x7d1f8874, 0xdb1dbf1f), TOBN(0xea46588b, 0x990c88d6),
+           TOBN(0x60ba649a, 0x84368313), TOBN(0xd5fdcbce, 0x60d543ae)}},
+         {{TOBN(0x90b46d43, 0x810d5ab0), TOBN(0x6739d8f9, 0x04d7e5cc),
+           TOBN(0x021c1a58, 0x0d337c33), TOBN(0x00a61162, 0x68e67c40)},
+          {TOBN(0x95ef413b, 0x379f0a1f), TOBN(0xfe126605, 0xe9e2ab95),
+           TOBN(0x67578b85, 0x2f5f199c), TOBN(0xf5c00329, 0x2cb84913)}},
+         {{TOBN(0xf7956430, 0x37577dd8), TOBN(0x83b82af4, 0x29c5fe88),
+           TOBN(0x9c1bea26, 0xcdbdc132), TOBN(0x589fa086, 0x9c04339e)},
+          {TOBN(0x033e9538, 0xb13799df), TOBN(0x85fa8b21, 0xd295d034),
+           TOBN(0xdf17f73f, 0xbd9ddcca), TOBN(0xf32bd122, 0xddb66334)}},
+         {{TOBN(0x55ef88a7, 0x858b044c), TOBN(0x1f0d69c2, 0x5aa9e397),
+           TOBN(0x55fd9cc3, 0x40d85559), TOBN(0xc774df72, 0x7785ddb2)},
+          {TOBN(0x5dcce9f6, 0xd3bd2e1c), TOBN(0xeb30da20, 0xa85dfed0),
+           TOBN(0x5ed7f5bb, 0xd3ed09c4), TOBN(0x7d42a35c, 0x82a9c1bd)}},
+         {{TOBN(0xcf3de995, 0x9890272d), TOBN(0x75f3432a, 0x3e713a10),
+           TOBN(0x5e13479f, 0xe28227b8), TOBN(0xb8561ea9, 0xfefacdc8)},
+          {TOBN(0xa6a297a0, 0x8332aafd), TOBN(0x9b0d8bb5, 0x73809b62),
+           TOBN(0xd2fa1cfd, 0x0c63036f), TOBN(0x7a16eb55, 0xbd64bda8)}},
+         {{TOBN(0x3f5cf5f6, 0x78e62ddc), TOBN(0x2267c454, 0x07fd752b),
+           TOBN(0x5e361b6b, 0x5e437bbe), TOBN(0x95c59501, 0x8354e075)},
+          {TOBN(0xec725f85, 0xf2b254d9), TOBN(0x844b617d, 0x2cb52b4e),
+           TOBN(0xed8554f5, 0xcf425fb5), TOBN(0xab67703e, 0x2af9f312)}},
+         {{TOBN(0x4cc34ec1, 0x3cf48283), TOBN(0xb09daa25, 0x9c8a705e),
+           TOBN(0xd1e9d0d0, 0x5b7d4f84), TOBN(0x4df6ef64, 0xdb38929d)},
+          {TOBN(0xe16b0763, 0xaa21ba46), TOBN(0xc6b1d178, 0xa293f8fb),
+           TOBN(0x0ff5b602, 0xd520aabf), TOBN(0x94d671bd, 0xc339397a)}},
+         {{TOBN(0x7c7d98cf, 0x4f5792fa), TOBN(0x7c5e0d67, 0x11215261),
+           TOBN(0x9b19a631, 0xa7c5a6d4), TOBN(0xc8511a62, 0x7a45274d)},
+          {TOBN(0x0c16621c, 0xa5a60d99), TOBN(0xf7fbab88, 0xcf5e48cb),
+           TOBN(0xab1e6ca2, 0xf7ddee08), TOBN(0x83bd08ce, 0xe7867f3c)}},
+         {{TOBN(0xf7e48e8a, 0x2ac13e27), TOBN(0x4494f6df, 0x4eb1a9f5),
+           TOBN(0xedbf84eb, 0x981f0a62), TOBN(0x49badc32, 0x536438f0)},
+          {TOBN(0x50bea541, 0x004f7571), TOBN(0xbac67d10, 0xdf1c94ee),
+           TOBN(0x253d73a1, 0xb727bc31), TOBN(0xb3d01cf2, 0x30686e28)}},
+         {{TOBN(0x51b77b1b, 0x55fd0b8b), TOBN(0xa099d183, 0xfeec3173),
+           TOBN(0x202b1fb7, 0x670e72b7), TOBN(0xadc88b33, 0xa8e1635f)},
+          {TOBN(0x34e8216a, 0xf989d905), TOBN(0xc2e68d20, 0x29b58d01),
+           TOBN(0x11f81c92, 0x6fe55a93), TOBN(0x15f1462a, 0x8f296f40)}},
+         {{TOBN(0x1915d375, 0xea3d62f2), TOBN(0xa17765a3, 0x01c8977d),
+           TOBN(0x7559710a, 0xe47b26f6), TOBN(0xe0bd29c8, 0x535077a5)},
+          {TOBN(0x615f976d, 0x08d84858), TOBN(0x370dfe85, 0x69ced5c1),
+           TOBN(0xbbc7503c, 0xa734fa56), TOBN(0xfbb9f1ec, 0x91ac4574)}},
+         {{TOBN(0x95d7ec53, 0x060dd7ef), TOBN(0xeef2dacd, 0x6e657979),
+           TOBN(0x54511af3, 0xe2a08235), TOBN(0x1e324aa4, 0x1f4aea3d)},
+          {TOBN(0x550e7e71, 0xe6e67671), TOBN(0xbccd5190, 0xbf52faf7),
+           TOBN(0xf880d316, 0x223cc62a), TOBN(0x0d402c7e, 0x2b32eb5d)}},
+         {{TOBN(0xa40bc039, 0x306a5a3b), TOBN(0x4e0a41fd, 0x96783a1b),
+           TOBN(0xa1e8d39a, 0x0253cdd4), TOBN(0x6480be26, 0xc7388638)},
+          {TOBN(0xee365e1d, 0x2285f382), TOBN(0x188d8d8f, 0xec0b5c36),
+           TOBN(0x34ef1a48, 0x1f0f4d82), TOBN(0x1a8f43e1, 0xa487d29a)}},
+         {{TOBN(0x8168226d, 0x77aefb3a), TOBN(0xf69a751e, 0x1e72c253),
+           TOBN(0x8e04359a, 0xe9594df1), TOBN(0x475ffd7d, 0xd14c0467)},
+          {TOBN(0xb5a2c2b1, 0x3844e95c), TOBN(0x85caf647, 0xdd12ef94),
+           TOBN(0x1ecd2a9f, 0xf1063d00), TOBN(0x1dd2e229, 0x23843311)}},
+         {{TOBN(0x38f0e09d, 0x73d17244), TOBN(0x3ede7746, 0x8fc653f1),
+           TOBN(0xae4459f5, 0xdc20e21c), TOBN(0x00db2ffa, 0x6a8599ea)},
+          {TOBN(0x11682c39, 0x30cfd905), TOBN(0x4934d074, 0xa5c112a6),
+           TOBN(0xbdf063c5, 0x568bfe95), TOBN(0x779a440a, 0x016c441a)}},
+         {{TOBN(0x0c23f218, 0x97d6fbdc), TOBN(0xd3a5cd87, 0xe0776aac),
+           TOBN(0xcee37f72, 0xd712e8db), TOBN(0xfb28c70d, 0x26f74e8d)},
+          {TOBN(0xffe0c728, 0xb61301a0), TOBN(0xa6282168, 0xd3724354),
+           TOBN(0x7ff4cb00, 0x768ffedc), TOBN(0xc51b3088, 0x03b02de9)}},
+         {{TOBN(0xa5a8147c, 0x3902dda5), TOBN(0x35d2f706, 0xfe6973b4),
+           TOBN(0x5ac2efcf, 0xc257457e), TOBN(0x933f48d4, 0x8700611b)},
+          {TOBN(0xc365af88, 0x4912beb2), TOBN(0x7f5a4de6, 0x162edf94),
+           TOBN(0xc646ba7c, 0x0c32f34b), TOBN(0x632c6af3, 0xb2091074)}},
+         {{TOBN(0x58d4f2e3, 0x753e43a9), TOBN(0x70e1d217, 0x24d4e23f),
+           TOBN(0xb24bf729, 0xafede6a6), TOBN(0x7f4a94d8, 0x710c8b60)},
+          {TOBN(0xaad90a96, 0x8d4faa6a), TOBN(0xd9ed0b32, 0xb066b690),
+           TOBN(0x52fcd37b, 0x78b6dbfd), TOBN(0x0b64615e, 0x8bd2b431)}},
+         {{TOBN(0x228e2048, 0xcfb9fad5), TOBN(0xbeaa386d, 0x240b76bd),
+           TOBN(0x2d6681c8, 0x90dad7bc), TOBN(0x3e553fc3, 0x06d38f5e)},
+          {TOBN(0xf27cdb9b, 0x9d5f9750), TOBN(0x3e85c52a, 0xd28c5b0e),
+           TOBN(0x190795af, 0x5247c39b), TOBN(0x547831eb, 0xbddd6828)}},
+         {{TOBN(0xf327a227, 0x4a82f424), TOBN(0x36919c78, 0x7e47f89d),
+           TOBN(0xe4783919, 0x43c7392c), TOBN(0xf101b9aa, 0x2316fefe)},
+          {TOBN(0xbcdc9e9c, 0x1c5009d2), TOBN(0xfb55ea13, 0x9cd18345),
+           TOBN(0xf5b5e231, 0xa3ce77c7), TOBN(0xde6b4527, 0xd2f2cb3d)}},
+         {{TOBN(0x10f6a333, 0x9bb26f5f), TOBN(0x1e85db8e, 0x044d85b6),
+           TOBN(0xc3697a08, 0x94197e54), TOBN(0x65e18cc0, 0xa7cb4ea8)},
+          {TOBN(0xa38c4f50, 0xa471fe6e), TOBN(0xf031747a, 0x2f13439c),
+           TOBN(0x53c4a6ba, 0xc007318b), TOBN(0xa8da3ee5, 0x1deccb3d)}},
+         {{TOBN(0x0555b31c, 0x558216b1), TOBN(0x90c7810c, 0x2f79e6c2),
+           TOBN(0x9b669f4d, 0xfe8eed3c), TOBN(0x70398ec8, 0xe0fac126)},
+          {TOBN(0xa96a449e, 0xf701b235), TOBN(0x0ceecdb3, 0xeb94f395),
+           TOBN(0x285fc368, 0xd0cb7431), TOBN(0x0d37bb52, 0x16a18c64)}},
+         {{TOBN(0x05110d38, 0xb880d2dd), TOBN(0xa60f177b, 0x65930d57),
+           TOBN(0x7da34a67, 0xf36235f5), TOBN(0x47f5e17c, 0x183816b9)},
+          {TOBN(0xc7664b57, 0xdb394af4), TOBN(0x39ba215d, 0x7036f789),
+           TOBN(0x46d2ca0e, 0x2f27b472), TOBN(0xc42647ee, 0xf73a84b7)}},
+         {{TOBN(0x44bc7545, 0x64488f1d), TOBN(0xaa922708, 0xf4cf85d5),
+           TOBN(0x721a01d5, 0x53e4df63), TOBN(0x649c0c51, 0x5db46ced)},
+          {TOBN(0x6bf0d64e, 0x3cffcb6c), TOBN(0xe3bf93fe, 0x50f71d96),
+           TOBN(0x75044558, 0xbcc194a0), TOBN(0x16ae3372, 0x6afdc554)}},
+         {{TOBN(0xbfc01adf, 0x5ca48f3f), TOBN(0x64352f06, 0xe22a9b84),
+           TOBN(0xcee54da1, 0xc1099e4a), TOBN(0xbbda54e8, 0xfa1b89c0)},
+          {TOBN(0x166a3df5, 0x6f6e55fb), TOBN(0x1ca44a24, 0x20176f88),
+           TOBN(0x936afd88, 0xdfb7b5ff), TOBN(0xe34c2437, 0x8611d4a0)}},
+         {{TOBN(0x7effbb75, 0x86142103), TOBN(0x6704ba1b, 0x1f34fc4d),
+           TOBN(0x7c2a468f, 0x10c1b122), TOBN(0x36b3a610, 0x8c6aace9)},
+          {TOBN(0xabfcc0a7, 0x75a0d050), TOBN(0x066f9197, 0x3ce33e32),
+           TOBN(0xce905ef4, 0x29fe09be), TOBN(0x89ee25ba, 0xa8376351)}},
+         {{TOBN(0x2a3ede22, 0xfd29dc76), TOBN(0x7fd32ed9, 0x36f17260),
+           TOBN(0x0cadcf68, 0x284b4126), TOBN(0x63422f08, 0xa7951fc8)},
+          {TOBN(0x562b24f4, 0x0807e199), TOBN(0xfe9ce5d1, 0x22ad4490),
+           TOBN(0xc2f51b10, 0x0db2b1b4), TOBN(0xeb3613ff, 0xe4541d0d)}},
+         {{TOBN(0xbd2c4a05, 0x2680813b), TOBN(0x527aa55d, 0x561b08d6),
+           TOBN(0xa9f8a40e, 0xa7205558), TOBN(0xe3eea56f, 0x243d0bec)},
+          {TOBN(0x7b853817, 0xa0ff58b3), TOBN(0xb67d3f65, 0x1a69e627),
+           TOBN(0x0b76bbb9, 0xa869b5d6), TOBN(0xa3afeb82, 0x546723ed)}},
+         {{TOBN(0x5f24416d, 0x3e554892), TOBN(0x8413b53d, 0x430e2a45),
+           TOBN(0x99c56aee, 0x9032a2a0), TOBN(0x09432bf6, 0xeec367b1)},
+          {TOBN(0x552850c6, 0xdaf0ecc1), TOBN(0x49ebce55, 0x5bc92048),
+           TOBN(0xdfb66ba6, 0x54811307), TOBN(0x1b84f797, 0x6f298597)}},
+         {{TOBN(0x79590481, 0x8d1d7a0d), TOBN(0xd9fabe03, 0x3a6fa556),
+           TOBN(0xa40f9c59, 0xba9e5d35), TOBN(0xcb1771c1, 0xf6247577)},
+          {TOBN(0x542a47ca, 0xe9a6312b), TOBN(0xa34b3560, 0x552dd8c5),
+           TOBN(0xfdf94de0, 0x0d794716), TOBN(0xd46124a9, 0x9c623094)}},
+         {{TOBN(0x56b7435d, 0x68afe8b4), TOBN(0x27f20540, 0x6c0d8ea1),
+           TOBN(0x12b77e14, 0x73186898), TOBN(0xdbc3dd46, 0x7479490f)},
+          {TOBN(0x951a9842, 0xc03b0c05), TOBN(0x8b1b3bb3, 0x7921bc96),
+           TOBN(0xa573b346, 0x2b202e0a), TOBN(0x77e4665d, 0x47254d56)}},
+         {{TOBN(0x08b70dfc, 0xd23e3984), TOBN(0xab86e8bc, 0xebd14236),
+           TOBN(0xaa3e07f8, 0x57114ba7), TOBN(0x5ac71689, 0xab0ef4f2)},
+          {TOBN(0x88fca384, 0x0139d9af), TOBN(0x72733f88, 0x76644af0),
+           TOBN(0xf122f72a, 0x65d74f4a), TOBN(0x13931577, 0xa5626c7a)}},
+         {{TOBN(0xd5b5d9eb, 0x70f8d5a4), TOBN(0x375adde7, 0xd7bbb228),
+           TOBN(0x31e88b86, 0x0c1c0b32), TOBN(0xd1f568c4, 0x173edbaa)},
+          {TOBN(0x1592fc83, 0x5459df02), TOBN(0x2beac0fb, 0x0fcd9a7e),
+           TOBN(0xb0a6fdb8, 0x1b473b0a), TOBN(0xe3224c6f, 0x0fe8fc48)}},
+         {{TOBN(0x680bd00e, 0xe87edf5b), TOBN(0x30385f02, 0x20e77cf5),
+           TOBN(0xe9ab98c0, 0x4d42d1b2), TOBN(0x72d191d2, 0xd3816d77)},
+          {TOBN(0x1564daca, 0x0917d9e5), TOBN(0x394eab59, 0x1f8fed7f),
+           TOBN(0xa209aa8d, 0x7fbb3896), TOBN(0x5564f3b9, 0xbe6ac98e)}},
+         {{TOBN(0xead21d05, 0xd73654ef), TOBN(0x68d1a9c4, 0x13d78d74),
+           TOBN(0x61e01708, 0x6d4973a0), TOBN(0x83da3500, 0x46e6d32a)},
+          {TOBN(0x6a3dfca4, 0x68ae0118), TOBN(0xa1b9a4c9, 0xd02da069),
+           TOBN(0x0b2ff9c7, 0xebab8302), TOBN(0x98af07c3, 0x944ba436)}},
+         {{TOBN(0x85997326, 0x995f0f9f), TOBN(0x467fade0, 0x71b58bc6),
+           TOBN(0x47e4495a, 0xbd625a2b), TOBN(0xfdd2d01d, 0x33c3b8cd)},
+          {TOBN(0x2c38ae28, 0xc693f9fa), TOBN(0x48622329, 0x348f7999),
+           TOBN(0x97bf738e, 0x2161f583), TOBN(0x15ee2fa7, 0x565e8cc9)}},
+         {{TOBN(0xa1a5c845, 0x5777e189), TOBN(0xcc10bee0, 0x456f2829),
+           TOBN(0x8ad95c56, 0xda762bd5), TOBN(0x152e2214, 0xe9d91da8)},
+          {TOBN(0x975b0e72, 0x7cb23c74), TOBN(0xfd5d7670, 0xa90c66df),
+           TOBN(0xb5b5b8ad, 0x225ffc53), TOBN(0xab6dff73, 0xfaded2ae)}},
+         {{TOBN(0xebd56781, 0x6f4cbe9d), TOBN(0x0ed8b249, 0x6a574bd7),
+           TOBN(0x41c246fe, 0x81a881fa), TOBN(0x91564805, 0xc3db9c70)},
+          {TOBN(0xd7c12b08, 0x5b862809), TOBN(0x1facd1f1, 0x55858d7b),
+           TOBN(0x7693747c, 0xaf09e92a), TOBN(0x3b69dcba, 0x189a425f)}},
+         {{TOBN(0x0be28e9f, 0x967365ef), TOBN(0x57300eb2, 0xe801f5c9),
+           TOBN(0x93b8ac6a, 0xd583352f), TOBN(0xa2cf1f89, 0xcd05b2b7)},
+          {TOBN(0x7c0c9b74, 0x4dcc40cc), TOBN(0xfee38c45, 0xada523fb),
+           TOBN(0xb49a4dec, 0x1099cc4d), TOBN(0x325c377f, 0x69f069c6)}},
+         {{TOBN(0xe12458ce, 0x476cc9ff), TOBN(0x580e0b6c, 0xc6d4cb63),
+           TOBN(0xd561c8b7, 0x9072289b), TOBN(0x0377f264, 0xa619e6da)},
+          {TOBN(0x26685362, 0x88e591a5), TOBN(0xa453a7bd, 0x7523ca2b),
+           TOBN(0x8a9536d2, 0xc1df4533), TOBN(0xc8e50f2f, 0xbe972f79)}},
+         {{TOBN(0xd433e50f, 0x6d3549cf), TOBN(0x6f33696f, 0xfacd665e),
+           TOBN(0x695bfdac, 0xce11fcb4), TOBN(0x810ee252, 0xaf7c9860)},
+          {TOBN(0x65450fe1, 0x7159bb2c), TOBN(0xf7dfbebe, 0x758b357b),
+           TOBN(0x2b057e74, 0xd69fea72), TOBN(0xd485717a, 0x92731745)}}},
+        {{{TOBN(0x896c42e8, 0xee36860c), TOBN(0xdaf04dfd, 0x4113c22d),
+           TOBN(0x1adbb7b7, 0x44104213), TOBN(0xe5fd5fa1, 0x1fd394ea)},
+          {TOBN(0x68235d94, 0x1a4e0551), TOBN(0x6772cfbe, 0x18d10151),
+           TOBN(0x276071e3, 0x09984523), TOBN(0xe4e879de, 0x5a56ba98)}},
+         {{TOBN(0xaaafafb0, 0x285b9491), TOBN(0x01a0be88, 0x1e4c705e),
+           TOBN(0xff1d4f5d, 0x2ad9caab), TOBN(0x6e349a4a, 0xc37a233f)},
+          {TOBN(0xcf1c1246, 0x4a1c6a16), TOBN(0xd99e6b66, 0x29383260),
+           TOBN(0xea3d4366, 0x5f6d5471), TOBN(0x36974d04, 0xff8cc89b)}},
+         {{TOBN(0xc26c49a1, 0xcfe89d80), TOBN(0xb42c026d, 0xda9c8371),
+           TOBN(0xca6c013a, 0xdad066d2), TOBN(0xfb8f7228, 0x56a4f3ee)},
+          {TOBN(0x08b579ec, 0xd850935b), TOBN(0x34c1a74c, 0xd631e1b3),
+           TOBN(0xcb5fe596, 0xac198534), TOBN(0x39ff21f6, 0xe1f24f25)}},
+         {{TOBN(0x27f29e14, 0x8f929057), TOBN(0x7a64ae06, 0xc0c853df),
+           TOBN(0x256cd183, 0x58e9c5ce), TOBN(0x9d9cce82, 0xded092a5)},
+          {TOBN(0xcc6e5979, 0x6e93b7c7), TOBN(0xe1e47092, 0x31bb9e27),
+           TOBN(0xb70b3083, 0xaa9e29a0), TOBN(0xbf181a75, 0x3785e644)}},
+         {{TOBN(0xf53f2c65, 0x8ead09f7), TOBN(0x1335e1d5, 0x9780d14d),
+           TOBN(0x69cc20e0, 0xcd1b66bc), TOBN(0x9b670a37, 0xbbe0bfc8)},
+          {TOBN(0xce53dc81, 0x28efbeed), TOBN(0x0c74e77c, 0x8326a6e5),
+           TOBN(0x3604e0d2, 0xb88e9a63), TOBN(0xbab38fca, 0x13dc2248)}},
+         {{TOBN(0x8ed6e8c8, 0x5c0a3f1e), TOBN(0xbcad2492, 0x7c87c37f),
+           TOBN(0xfdfb62bb, 0x9ee3b78d), TOBN(0xeba8e477, 0xcbceba46)},
+          {TOBN(0x37d38cb0, 0xeeaede4b), TOBN(0x0bc498e8, 0x7976deb6),
+           TOBN(0xb2944c04, 0x6b6147fb), TOBN(0x8b123f35, 0xf71f9609)}},
+         {{TOBN(0xa155dcc7, 0xde79dc24), TOBN(0xf1168a32, 0x558f69cd),
+           TOBN(0xbac21595, 0x0d1850df), TOBN(0x15c8295b, 0xb204c848)},
+          {TOBN(0xf661aa36, 0x7d8184ff), TOBN(0xc396228e, 0x30447bdb),
+           TOBN(0x11cd5143, 0xbde4a59e), TOBN(0xe3a26e3b, 0x6beab5e6)}},
+         {{TOBN(0xd3b3a13f, 0x1402b9d0), TOBN(0x573441c3, 0x2c7bc863),
+           TOBN(0x4b301ec4, 0x578c3e6e), TOBN(0xc26fc9c4, 0x0adaf57e)},
+          {TOBN(0x96e71bfd, 0x7493cea3), TOBN(0xd05d4b3f, 0x1af81456),
+           TOBN(0xdaca2a8a, 0x6a8c608f), TOBN(0x53ef07f6, 0x0725b276)}},
+         {{TOBN(0x07a5fbd2, 0x7824fc56), TOBN(0x34675218, 0x13289077),
+           TOBN(0x5bf69fd5, 0xe0c48349), TOBN(0xa613ddd3, 0xb6aa7875)},
+          {TOBN(0x7f78c19c, 0x5450d866), TOBN(0x46f4409c, 0x8f84a481),
+           TOBN(0x9f1d1928, 0x90fce239), TOBN(0x016c4168, 0xb2ce44b9)}},
+         {{TOBN(0xbae023f0, 0xc7435978), TOBN(0xb152c888, 0x20e30e19),
+           TOBN(0x9c241645, 0xe3fa6faf), TOBN(0x735d95c1, 0x84823e60)},
+          {TOBN(0x03197573, 0x03955317), TOBN(0x0b4b02a9, 0xf03b4995),
+           TOBN(0x076bf559, 0x70274600), TOBN(0x32c5cc53, 0xaaf57508)}},
+         {{TOBN(0xe8af6d1f, 0x60624129), TOBN(0xb7bc5d64, 0x9a5e2b5e),
+           TOBN(0x3814b048, 0x5f082d72), TOBN(0x76f267f2, 0xce19677a)},
+          {TOBN(0x626c630f, 0xb36eed93), TOBN(0x55230cd7, 0x3bf56803),
+           TOBN(0x78837949, 0xce2736a0), TOBN(0x0d792d60, 0xaa6c55f1)}},
+         {{TOBN(0x0318dbfd, 0xd5c7c5d2), TOBN(0xb38f8da7, 0x072b342d),
+           TOBN(0x3569bddc, 0x7b8de38a), TOBN(0xf25b5887, 0xa1c94842)},
+          {TOBN(0xb2d5b284, 0x2946ad60), TOBN(0x854f29ad, 0xe9d1707e),
+           TOBN(0xaa5159dc, 0x2c6a4509), TOBN(0x899f94c0, 0x57189837)}},
+         {{TOBN(0xcf6adc51, 0xf4a55b03), TOBN(0x261762de, 0x35e3b2d5),
+           TOBN(0x4cc43012, 0x04827b51), TOBN(0xcd22a113, 0xc6021442)},
+          {TOBN(0xce2fd61a, 0x247c9569), TOBN(0x59a50973, 0xd152beca),
+           TOBN(0x6c835a11, 0x63a716d4), TOBN(0xc26455ed, 0x187dedcf)}},
+         {{TOBN(0x27f536e0, 0x49ce89e7), TOBN(0x18908539, 0xcc890cb5),
+           TOBN(0x308909ab, 0xd83c2aa1), TOBN(0xecd3142b, 0x1ab73bd3)},
+          {TOBN(0x6a85bf59, 0xb3f5ab84), TOBN(0x3c320a68, 0xf2bea4c6),
+           TOBN(0xad8dc538, 0x6da4541f), TOBN(0xeaf34eb0, 0xb7c41186)}},
+         {{TOBN(0x1c780129, 0x977c97c4), TOBN(0x5ff9beeb, 0xc57eb9fa),
+           TOBN(0xa24d0524, 0xc822c478), TOBN(0xfd8eec2a, 0x461cd415)},
+          {TOBN(0xfbde194e, 0xf027458c), TOBN(0xb4ff5319, 0x1d1be115),
+           TOBN(0x63f874d9, 0x4866d6f4), TOBN(0x35c75015, 0xb21ad0c9)}},
+         {{TOBN(0xa6b5c9d6, 0x46ac49d2), TOBN(0x42c77c0b, 0x83137aa9),
+           TOBN(0x24d000fc, 0x68225a38), TOBN(0x0f63cfc8, 0x2fe1e907)},
+          {TOBN(0x22d1b01b, 0xc6441f95), TOBN(0x7d38f719, 0xec8e448f),
+           TOBN(0x9b33fa5f, 0x787fb1ba), TOBN(0x94dcfda1, 0x190158df)}},
+         {{TOBN(0xc47cb339, 0x5f6d4a09), TOBN(0x6b4f355c, 0xee52b826),
+           TOBN(0x3d100f5d, 0xf51b930a), TOBN(0xf4512fac, 0x9f668f69)},
+          {TOBN(0x546781d5, 0x206c4c74), TOBN(0xd021d4d4, 0xcb4d2e48),
+           TOBN(0x494a54c2, 0xca085c2d), TOBN(0xf1dbaca4, 0x520850a8)}},
+         {{TOBN(0x63c79326, 0x490a1aca), TOBN(0xcb64dd9c, 0x41526b02),
+           TOBN(0xbb772591, 0xa2979258), TOBN(0x3f582970, 0x48d97846)},
+          {TOBN(0xd66b70d1, 0x7c213ba7), TOBN(0xc28febb5, 0xe8a0ced4),
+           TOBN(0x6b911831, 0xc10338c1), TOBN(0x0d54e389, 0xbf0126f3)}},
+         {{TOBN(0x7048d460, 0x4af206ee), TOBN(0x786c88f6, 0x77e97cb9),
+           TOBN(0xd4375ae1, 0xac64802e), TOBN(0x469bcfe1, 0xd53ec11c)},
+          {TOBN(0xfc9b340d, 0x47062230), TOBN(0xe743bb57, 0xc5b4a3ac),
+           TOBN(0xfe00b4aa, 0x59ef45ac), TOBN(0x29a4ef23, 0x59edf188)}},
+         {{TOBN(0x40242efe, 0xb483689b), TOBN(0x2575d3f6, 0x513ac262),
+           TOBN(0xf30037c8, 0x0ca6db72), TOBN(0xc9fcce82, 0x98864be2)},
+          {TOBN(0x84a112ff, 0x0149362d), TOBN(0x95e57582, 0x1c4ae971),
+           TOBN(0x1fa4b1a8, 0x945cf86c), TOBN(0x4525a734, 0x0b024a2f)}},
+         {{TOBN(0xe76c8b62, 0x8f338360), TOBN(0x483ff593, 0x28edf32b),
+           TOBN(0x67e8e90a, 0x298b1aec), TOBN(0x9caab338, 0x736d9a21)},
+          {TOBN(0x5c09d2fd, 0x66892709), TOBN(0x2496b4dc, 0xb55a1d41),
+           TOBN(0x93f5fb1a, 0xe24a4394), TOBN(0x08c75049, 0x6fa8f6c1)}},
+         {{TOBN(0xcaead1c2, 0xc905d85f), TOBN(0xe9d7f790, 0x0733ae57),
+           TOBN(0x24c9a65c, 0xf07cdd94), TOBN(0x7389359c, 0xa4b55931)},
+          {TOBN(0xf58709b7, 0x367e45f7), TOBN(0x1f203067, 0xcb7e7adc),
+           TOBN(0x82444bff, 0xc7b72818), TOBN(0x07303b35, 0xbaac8033)}},
+         {{TOBN(0x1e1ee4e4, 0xd13b7ea1), TOBN(0xe6489b24, 0xe0e74180),
+           TOBN(0xa5f2c610, 0x7e70ef70), TOBN(0xa1655412, 0xbdd10894)},
+          {TOBN(0x555ebefb, 0x7af4194e), TOBN(0x533c1c3c, 0x8e89bd9c),
+           TOBN(0x735b9b57, 0x89895856), TOBN(0x15fb3cd2, 0x567f5c15)}},
+         {{TOBN(0x057fed45, 0x526f09fd), TOBN(0xe8a4f10c, 0x8128240a),
+           TOBN(0x9332efc4, 0xff2bfd8d), TOBN(0x214e77a0, 0xbd35aa31)},
+          {TOBN(0x32896d73, 0x14faa40e), TOBN(0x767867ec, 0x01e5f186),
+           TOBN(0xc9adf8f1, 0x17a1813e), TOBN(0xcb6cda78, 0x54741795)}},
+         {{TOBN(0xb7521b6d, 0x349d51aa), TOBN(0xf56b5a9e, 0xe3c7b8e9),
+           TOBN(0xc6f1e5c9, 0x32a096df), TOBN(0x083667c4, 0xa3635024)},
+          {TOBN(0x365ea135, 0x18087f2f), TOBN(0xf1b8eaac, 0xd136e45d),
+           TOBN(0xc8a0e484, 0x73aec989), TOBN(0xd75a324b, 0x142c9259)}},
+         {{TOBN(0xb7b4d001, 0x01dae185), TOBN(0x45434e0b, 0x9b7a94bc),
+           TOBN(0xf54339af, 0xfbd8cb0b), TOBN(0xdcc4569e, 0xe98ef49e)},
+          {TOBN(0x7789318a, 0x09a51299), TOBN(0x81b4d206, 0xb2b025d8),
+           TOBN(0xf64aa418, 0xfae85792), TOBN(0x3e50258f, 0xacd7baf7)}},
+         {{TOBN(0xdce84cdb, 0x2996864b), TOBN(0xa2e67089, 0x1f485fa4),
+           TOBN(0xb28b2bb6, 0x534c6a5a), TOBN(0x31a7ec6b, 0xc94b9d39)},
+          {TOBN(0x1d217766, 0xd6bc20da), TOBN(0x4acdb5ec, 0x86761190),
+           TOBN(0x68726328, 0x73701063), TOBN(0x4d24ee7c, 0x2128c29b)}},
+         {{TOBN(0xc072ebd3, 0xa19fd868), TOBN(0x612e481c, 0xdb8ddd3b),
+           TOBN(0xb4e1d754, 0x1a64d852), TOBN(0x00ef95ac, 0xc4c6c4ab)},
+          {TOBN(0x1536d2ed, 0xaa0a6c46), TOBN(0x61294086, 0x43774790),
+           TOBN(0x54af25e8, 0x343fda10), TOBN(0x9ff9d98d, 0xfd25d6f2)}},
+         {{TOBN(0x0746af7c, 0x468b8835), TOBN(0x977a31cb, 0x730ecea7),
+           TOBN(0xa5096b80, 0xc2cf4a81), TOBN(0xaa986833, 0x6458c37a)},
+          {TOBN(0x6af29bf3, 0xa6bd9d34), TOBN(0x6a62fe9b, 0x33c5d854),
+           TOBN(0x50e6c304, 0xb7133b5e), TOBN(0x04b60159, 0x7d6e6848)}},
+         {{TOBN(0x4cd296df, 0x5579bea4), TOBN(0x10e35ac8, 0x5ceedaf1),
+           TOBN(0x04c4c5fd, 0xe3bcc5b1), TOBN(0x95f9ee8a, 0x89412cf9)},
+          {TOBN(0x2c9459ee, 0x82b6eb0f), TOBN(0x2e845765, 0x95c2aadd),
+           TOBN(0x774a84ae, 0xd327fcfe), TOBN(0xd8c93722, 0x0368d476)}},
+         {{TOBN(0x0dbd5748, 0xf83e8a3b), TOBN(0xa579aa96, 0x8d2495f3),
+           TOBN(0x535996a0, 0xae496e9b), TOBN(0x07afbfe9, 0xb7f9bcc2)},
+          {TOBN(0x3ac1dc6d, 0x5b7bd293), TOBN(0x3b592cff, 0x7022323d),
+           TOBN(0xba0deb98, 0x9c0a3e76), TOBN(0x18e78e9f, 0x4b197acb)}},
+         {{TOBN(0x211cde10, 0x296c36ef), TOBN(0x7ee89672, 0x82c4da77),
+           TOBN(0xb617d270, 0xa57836da), TOBN(0xf0cd9c31, 0x9cb7560b)},
+          {TOBN(0x01fdcbf7, 0xe455fe90), TOBN(0x3fb53cbb, 0x7e7334f3),
+           TOBN(0x781e2ea4, 0x4e7de4ec), TOBN(0x8adab3ad, 0x0b384fd0)}},
+         {{TOBN(0x129eee2f, 0x53d64829), TOBN(0x7a471e17, 0xa261492b),
+           TOBN(0xe4f9adb9, 0xe4cb4a2c), TOBN(0x3d359f6f, 0x97ba2c2d)},
+          {TOBN(0x346c6786, 0x0aacd697), TOBN(0x92b444c3, 0x75c2f8a8),
+           TOBN(0xc79fa117, 0xd85df44e), TOBN(0x56782372, 0x398ddf31)}},
+         {{TOBN(0x60e690f2, 0xbbbab3b8), TOBN(0x4851f8ae, 0x8b04816b),
+           TOBN(0xc72046ab, 0x9c92e4d2), TOBN(0x518c74a1, 0x7cf3136b)},
+          {TOBN(0xff4eb50a, 0xf9877d4c), TOBN(0x14578d90, 0xa919cabb),
+           TOBN(0x8218f8c4, 0xac5eb2b6), TOBN(0xa3ccc547, 0x542016e4)}},
+         {{TOBN(0x025bf48e, 0x327f8349), TOBN(0xf3e97346, 0xf43cb641),
+           TOBN(0xdc2bafdf, 0x500f1085), TOBN(0x57167876, 0x2f063055)},
+          {TOBN(0x5bd914b9, 0x411925a6), TOBN(0x7c078d48, 0xa1123de5),
+           TOBN(0xee6bf835, 0x182b165d), TOBN(0xb11b5e5b, 0xba519727)}},
+         {{TOBN(0xe33ea76c, 0x1eea7b85), TOBN(0x2352b461, 0x92d4f85e),
+           TOBN(0xf101d334, 0xafe115bb), TOBN(0xfabc1294, 0x889175a3)},
+          {TOBN(0x7f6bcdc0, 0x5233f925), TOBN(0xe0a802db, 0xe77fec55),
+           TOBN(0xbdb47b75, 0x8069b659), TOBN(0x1c5e12de, 0xf98fbd74)}},
+         {{TOBN(0x869c58c6, 0x4b8457ee), TOBN(0xa5360f69, 0x4f7ea9f7),
+           TOBN(0xe576c09f, 0xf460b38f), TOBN(0x6b70d548, 0x22b7fb36)},
+          {TOBN(0x3fd237f1, 0x3bfae315), TOBN(0x33797852, 0xcbdff369),
+           TOBN(0x97df25f5, 0x25b516f9), TOBN(0x46f388f2, 0xba38ad2d)}},
+         {{TOBN(0x656c4658, 0x89d8ddbb), TOBN(0x8830b26e, 0x70f38ee8),
+           TOBN(0x4320fd5c, 0xde1212b0), TOBN(0xc34f30cf, 0xe4a2edb2)},
+          {TOBN(0xabb131a3, 0x56ab64b8), TOBN(0x7f77f0cc, 0xd99c5d26),
+           TOBN(0x66856a37, 0xbf981d94), TOBN(0x19e76d09, 0x738bd76e)}},
+         {{TOBN(0xe76c8ac3, 0x96238f39), TOBN(0xc0a482be, 0xa830b366),
+           TOBN(0xb7b8eaff, 0x0b4eb499), TOBN(0x8ecd83bc, 0x4bfb4865)},
+          {TOBN(0x971b2cb7, 0xa2f3776f), TOBN(0xb42176a4, 0xf4b88adf),
+           TOBN(0xb9617df5, 0xbe1fa446), TOBN(0x8b32d508, 0xcd031bd2)}},
+         {{TOBN(0x1c6bd47d, 0x53b618c0), TOBN(0xc424f46c, 0x6a227923),
+           TOBN(0x7303ffde, 0xdd92d964), TOBN(0xe9712878, 0x71b5abf2)},
+          {TOBN(0x8f48a632, 0xf815561d), TOBN(0x85f48ff5, 0xd3c055d1),
+           TOBN(0x222a1427, 0x7525684f), TOBN(0xd0d841a0, 0x67360cc3)}},
+         {{TOBN(0x4245a926, 0x0b9267c6), TOBN(0xc78913f1, 0xcf07f863),
+           TOBN(0xaa844c8e, 0x4d0d9e24), TOBN(0xa42ad522, 0x3d5f9017)},
+          {TOBN(0xbd371749, 0xa2c989d5), TOBN(0x928292df, 0xe1f5e78e),
+           TOBN(0x493b383e, 0x0a1ea6da), TOBN(0x5136fd8d, 0x13aee529)}},
+         {{TOBN(0x860c44b1, 0xf2c34a99), TOBN(0x3b00aca4, 0xbf5855ac),
+           TOBN(0xabf6aaa0, 0xfaaf37be), TOBN(0x65f43682, 0x2a53ec08)},
+          {TOBN(0x1d9a5801, 0xa11b12e1), TOBN(0x78a7ab2c, 0xe20ed475),
+           TOBN(0x0de1067e, 0x9a41e0d5), TOBN(0x30473f5f, 0x305023ea)}},
+         {{TOBN(0xdd3ae09d, 0x169c7d97), TOBN(0x5cd5baa4, 0xcfaef9cd),
+           TOBN(0x5cd7440b, 0x65a44803), TOBN(0xdc13966a, 0x47f364de)},
+          {TOBN(0x077b2be8, 0x2b8357c1), TOBN(0x0cb1b4c5, 0xe9d57c2a),
+           TOBN(0x7a4ceb32, 0x05ff363e), TOBN(0xf310fa4d, 0xca35a9ef)}},
+         {{TOBN(0xdbb7b352, 0xf97f68c6), TOBN(0x0c773b50, 0x0b02cf58),
+           TOBN(0xea2e4821, 0x3c1f96d9), TOBN(0xffb357b0, 0xeee01815)},
+          {TOBN(0xb9c924cd, 0xe0f28039), TOBN(0x0b36c95a, 0x46a3fbe4),
+           TOBN(0x1faaaea4, 0x5e46db6c), TOBN(0xcae575c3, 0x1928aaff)}},
+         {{TOBN(0x7f671302, 0xa70dab86), TOBN(0xfcbd12a9, 0x71c58cfc),
+           TOBN(0xcbef9acf, 0xbee0cb92), TOBN(0x573da0b9, 0xf8c1b583)},
+          {TOBN(0x4752fcfe, 0x0d41d550), TOBN(0xe7eec0e3, 0x2155cffe),
+           TOBN(0x0fc39fcb, 0x545ae248), TOBN(0x522cb8d1, 0x8065f44e)}},
+         {{TOBN(0x263c962a, 0x70cbb96c), TOBN(0xe034362a, 0xbcd124a9),
+           TOBN(0xf120db28, 0x3c2ae58d), TOBN(0xb9a38d49, 0xfef6d507)},
+          {TOBN(0xb1fd2a82, 0x1ff140fd), TOBN(0xbd162f30, 0x20aee7e0),
+           TOBN(0x4e17a5d4, 0xcb251949), TOBN(0x2aebcb83, 0x4f7e1c3d)}},
+         {{TOBN(0x608eb25f, 0x937b0527), TOBN(0xf42e1e47, 0xeb7d9997),
+           TOBN(0xeba699c4, 0xb8a53a29), TOBN(0x1f921c71, 0xe091b536)},
+          {TOBN(0xcce29e7b, 0x5b26bbd5), TOBN(0x7a8ef5ed, 0x3b61a680),
+           TOBN(0xe5ef8043, 0xba1f1c7e), TOBN(0x16ea8217, 0x18158dda)}},
+         {{TOBN(0x01778a2b, 0x599ff0f9), TOBN(0x68a923d7, 0x8104fc6b),
+           TOBN(0x5bfa44df, 0xda694ff3), TOBN(0x4f7199db, 0xf7667f12)},
+          {TOBN(0xc06d8ff6, 0xe46f2a79), TOBN(0x08b5dead, 0xe9f8131d),
+           TOBN(0x02519a59, 0xabb4ce7c), TOBN(0xc4f710bc, 0xb42aec3e)}},
+         {{TOBN(0x3d77b057, 0x78bde41a), TOBN(0x6474bf80, 0xb4186b5a),
+           TOBN(0x048b3f67, 0x88c65741), TOBN(0xc64519de, 0x03c7c154)},
+          {TOBN(0xdf073846, 0x0edfcc4f), TOBN(0x319aa737, 0x48f1aa6b),
+           TOBN(0x8b9f8a02, 0xca909f77), TOBN(0x90258139, 0x7580bfef)}},
+         {{TOBN(0xd8bfd3ca, 0xc0c22719), TOBN(0xc60209e4, 0xc9ca151e),
+           TOBN(0x7a744ab5, 0xd9a1a69c), TOBN(0x6de5048b, 0x14937f8f)},
+          {TOBN(0x171938d8, 0xe115ac04), TOBN(0x7df70940, 0x1c6b16d2),
+           TOBN(0xa6aeb663, 0x7f8e94e7), TOBN(0xc130388e, 0x2a2cf094)}},
+         {{TOBN(0x1850be84, 0x77f54e6e), TOBN(0x9f258a72, 0x65d60fe5),
+           TOBN(0xff7ff0c0, 0x6c9146d6), TOBN(0x039aaf90, 0xe63a830b)},
+          {TOBN(0x38f27a73, 0x9460342f), TOBN(0x4703148c, 0x3f795f8a),
+           TOBN(0x1bb5467b, 0x9681a97e), TOBN(0x00931ba5, 0xecaeb594)}},
+         {{TOBN(0xcdb6719d, 0x786f337c), TOBN(0xd9c01cd2, 0xe704397d),
+           TOBN(0x0f4a3f20, 0x555c2fef), TOBN(0x00452509, 0x7c0af223)},
+          {TOBN(0x54a58047, 0x84db8e76), TOBN(0x3bacf1aa, 0x93c8aa06),
+           TOBN(0x11ca957c, 0xf7919422), TOBN(0x50641053, 0x78cdaa40)}},
+         {{TOBN(0x7a303874, 0x9f7144ae), TOBN(0x170c963f, 0x43d4acfd),
+           TOBN(0x5e148149, 0x58ddd3ef), TOBN(0xa7bde582, 0x9e72dba8)},
+          {TOBN(0x0769da8b, 0x6fa68750), TOBN(0xfa64e532, 0x572e0249),
+           TOBN(0xfcaadf9d, 0x2619ad31), TOBN(0x87882daa, 0xa7b349cd)}},
+         {{TOBN(0x9f6eb731, 0x6c67a775), TOBN(0xcb10471a, 0xefc5d0b1),
+           TOBN(0xb433750c, 0xe1b806b2), TOBN(0x19c5714d, 0x57b1ae7e)},
+          {TOBN(0xc0dc8b7b, 0xed03fd3f), TOBN(0xdd03344f, 0x31bc194e),
+           TOBN(0xa66c52a7, 0x8c6320b5), TOBN(0x8bc82ce3, 0xd0b6fd93)}},
+         {{TOBN(0xf8e13501, 0xb35f1341), TOBN(0xe53156dd, 0x25a43e42),
+           TOBN(0xd3adf27e, 0x4daeb85c), TOBN(0xb81d8379, 0xbbeddeb5)},
+          {TOBN(0x1b0b546e, 0x2e435867), TOBN(0x9020eb94, 0xeba5dd60),
+           TOBN(0x37d91161, 0x8210cb9d), TOBN(0x4c596b31, 0x5c91f1cf)}},
+         {{TOBN(0xb228a90f, 0x0e0b040d), TOBN(0xbaf02d82, 0x45ff897f),
+           TOBN(0x2aac79e6, 0x00fa6122), TOBN(0x24828817, 0x8e36f557)},
+          {TOBN(0xb9521d31, 0x113ec356), TOBN(0x9e48861e, 0x15eff1f8),
+           TOBN(0x2aa1d412, 0xe0d41715), TOBN(0x71f86203, 0x53f131b8)}},
+         {{TOBN(0xf60da8da, 0x3fd19408), TOBN(0x4aa716dc, 0x278d9d99),
+           TOBN(0x394531f7, 0xa8c51c90), TOBN(0xb560b0e8, 0xf59db51c)},
+          {TOBN(0xa28fc992, 0xfa34bdad), TOBN(0xf024fa14, 0x9cd4f8bd),
+           TOBN(0x5cf530f7, 0x23a9d0d3), TOBN(0x615ca193, 0xe28c9b56)}},
+         {{TOBN(0x6d2a483d, 0x6f73c51e), TOBN(0xa4cb2412, 0xea0dc2dd),
+           TOBN(0x50663c41, 0x1eb917ff), TOBN(0x3d3a74cf, 0xeade299e)},
+          {TOBN(0x29b3990f, 0x4a7a9202), TOBN(0xa9bccf59, 0xa7b15c3d),
+           TOBN(0x66a3ccdc, 0xa5df9208), TOBN(0x48027c14, 0x43f2f929)}},
+         {{TOBN(0xd385377c, 0x40b557f0), TOBN(0xe001c366, 0xcd684660),
+           TOBN(0x1b18ed6b, 0xe2183a27), TOBN(0x879738d8, 0x63210329)},
+          {TOBN(0xa687c74b, 0xbda94882), TOBN(0xd1bbcc48, 0xa684b299),
+           TOBN(0xaf6f1112, 0x863b3724), TOBN(0x6943d1b4, 0x2c8ce9f8)}},
+         {{TOBN(0xe044a3bb, 0x098cafb4), TOBN(0x27ed2310, 0x60d48caf),
+           TOBN(0x542b5675, 0x3a31b84d), TOBN(0xcbf3dd50, 0xfcddbed7)},
+          {TOBN(0x25031f16, 0x41b1d830), TOBN(0xa7ec851d, 0xcb0c1e27),
+           TOBN(0xac1c8fe0, 0xb5ae75db), TOBN(0xb24c7557, 0x08c52120)}},
+         {{TOBN(0x57f811dc, 0x1d4636c3), TOBN(0xf8436526, 0x681a9939),
+           TOBN(0x1f6bc6d9, 0x9c81adb3), TOBN(0x840f8ac3, 0x5b7d80d4)},
+          {TOBN(0x731a9811, 0xf4387f1a), TOBN(0x7c501cd3, 0xb5156880),
+           TOBN(0xa5ca4a07, 0xdfe68867), TOBN(0xf123d8f0, 0x5fcea120)}},
+         {{TOBN(0x1fbb0e71, 0xd607039e), TOBN(0x2b70e215, 0xcd3a4546),
+           TOBN(0x32d2f01d, 0x53324091), TOBN(0xb796ff08, 0x180ab19b)},
+          {TOBN(0x32d87a86, 0x3c57c4aa), TOBN(0x2aed9caf, 0xb7c49a27),
+           TOBN(0x9fb35eac, 0x31630d98), TOBN(0x338e8cdf, 0x5c3e20a3)}},
+         {{TOBN(0x80f16182, 0x66cde8db), TOBN(0x4e159980, 0x2d72fd36),
+           TOBN(0xd7b8f13b, 0x9b6e5072), TOBN(0xf5213907, 0x3b7b5dc1)},
+          {TOBN(0x4d431f1d, 0x8ce4396e), TOBN(0x37a1a680, 0xa7ed2142),
+           TOBN(0xbf375696, 0xd01aaf6b), TOBN(0xaa1c0c54, 0xe63aab66)}},
+         {{TOBN(0x3014368b, 0x4ed80940), TOBN(0x67e6d056, 0x7a6fcedd),
+           TOBN(0x7c208c49, 0xca97579f), TOBN(0xfe3d7a81, 0xa23597f6)},
+          {TOBN(0x5e203202, 0x7e096ae2), TOBN(0xb1f3e1e7, 0x24b39366),
+           TOBN(0x26da26f3, 0x2fdcdffc), TOBN(0x79422f1d, 0x6097be83)}}},
+        {{{TOBN(0x263a2cfb, 0x9db3b381), TOBN(0x9c3a2dee, 0xd4df0a4b),
+           TOBN(0x728d06e9, 0x7d04e61f), TOBN(0x8b1adfbc, 0x42449325)},
+          {TOBN(0x6ec1d939, 0x7e053a1b), TOBN(0xee2be5c7, 0x66daf707),
+           TOBN(0x80ba1e14, 0x810ac7ab), TOBN(0xdd2ae778, 0xf530f174)}},
+         {{TOBN(0x0435d97a, 0x205b9d8b), TOBN(0x6eb8f064, 0x056756d4),
+           TOBN(0xd5e88a8b, 0xb6f8210e), TOBN(0x070ef12d, 0xec9fd9ea)},
+          {TOBN(0x4d849505, 0x3bcc876a), TOBN(0x12a75338, 0xa7404ce3),
+           TOBN(0xd22b49e1, 0xb8a1db5e), TOBN(0xec1f2051, 0x14bfa5ad)}},
+         {{TOBN(0xadbaeb79, 0xb6828f36), TOBN(0x9d7a0258, 0x01bd5b9e),
+           TOBN(0xeda01e0d, 0x1e844b0c), TOBN(0x4b625175, 0x887edfc9)},
+          {TOBN(0x14109fdd, 0x9669b621), TOBN(0x88a2ca56, 0xf6f87b98),
+           TOBN(0xfe2eb788, 0x170df6bc), TOBN(0x0cea06f4, 0xffa473f9)}},
+         {{TOBN(0x43ed81b5, 0xc4e83d33), TOBN(0xd9f35879, 0x5efd488b),
+           TOBN(0x164a620f, 0x9deb4d0f), TOBN(0xc6927bdb, 0xac6a7394)},
+          {TOBN(0x45c28df7, 0x9f9e0f03), TOBN(0x2868661e, 0xfcd7e1a9),
+           TOBN(0x7cf4e8d0, 0xffa348f1), TOBN(0x6bd4c284, 0x398538e0)}},
+         {{TOBN(0x2618a091, 0x289a8619), TOBN(0xef796e60, 0x6671b173),
+           TOBN(0x664e46e5, 0x9090c632), TOBN(0xa38062d4, 0x1e66f8fb)},
+          {TOBN(0x6c744a20, 0x0573274e), TOBN(0xd07b67e4, 0xa9271394),
+           TOBN(0x391223b2, 0x6bdc0e20), TOBN(0xbe2d93f1, 0xeb0a05a7)}},
+         {{TOBN(0xf23e2e53, 0x3f36d141), TOBN(0xe84bb3d4, 0x4dfca442),
+           TOBN(0xb804a48d, 0x6b7c023a), TOBN(0x1e16a8fa, 0x76431c3b)},
+          {TOBN(0x1b5452ad, 0xddd472e0), TOBN(0x7d405ee7, 0x0d1ee127),
+           TOBN(0x50fc6f1d, 0xffa27599), TOBN(0x351ac53c, 0xbf391b35)}},
+         {{TOBN(0x7efa14b8, 0x4444896b), TOBN(0x64974d2f, 0xf94027fb),
+           TOBN(0xefdcd0e8, 0xde84487d), TOBN(0x8c45b260, 0x2b48989b)},
+          {TOBN(0xa8fcbbc2, 0xd8463487), TOBN(0xd1b2b3f7, 0x3fbc476c),
+           TOBN(0x21d005b7, 0xc8f443c0), TOBN(0x518f2e67, 0x40c0139c)}},
+         {{TOBN(0x56036e8c, 0x06d75fc1), TOBN(0x2dcf7bb7, 0x3249a89f),
+           TOBN(0x81dd1d3d, 0xe245e7dd), TOBN(0xf578dc4b, 0xebd6e2a7)},
+          {TOBN(0x4c028903, 0xdf2ce7a0), TOBN(0xaee36288, 0x9c39afac),
+           TOBN(0xdc847c31, 0x146404ab), TOBN(0x6304c0d8, 0xa4e97818)}},
+         {{TOBN(0xae51dca2, 0xa91f6791), TOBN(0x2abe4190, 0x9baa9efc),
+           TOBN(0xd9d2e2f4, 0x559c7ac1), TOBN(0xe82f4b51, 0xfc9f773a)},
+          {TOBN(0xa7713027, 0x4073e81c), TOBN(0xc0276fac, 0xfbb596fc),
+           TOBN(0x1d819fc9, 0xa684f70c), TOBN(0x29b47fdd, 0xc9f7b1e0)}},
+         {{TOBN(0x358de103, 0x459b1940), TOBN(0xec881c59, 0x5b013e93),
+           TOBN(0x51574c93, 0x49532ad3), TOBN(0x2db1d445, 0xb37b46de)},
+          {TOBN(0xc6445b87, 0xdf239fd8), TOBN(0xc718af75, 0x151d24ee),
+           TOBN(0xaea1c4a4, 0xf43c6259), TOBN(0x40c0e5d7, 0x70be02f7)}},
+         {{TOBN(0x6a4590f4, 0x721b33f2), TOBN(0x2124f1fb, 0xfedf04ea),
+           TOBN(0xf8e53cde, 0x9745efe7), TOBN(0xe7e10432, 0x65f046d9)},
+          {TOBN(0xc3fca28e, 0xe4d0c7e6), TOBN(0x847e339a, 0x87253b1b),
+           TOBN(0x9b595348, 0x3743e643), TOBN(0xcb6a0a0b, 0x4fd12fc5)}},
+         {{TOBN(0xfb6836c3, 0x27d02dcc), TOBN(0x5ad00982, 0x7a68bcc2),
+           TOBN(0x1b24b44c, 0x005e912d), TOBN(0xcc83d20f, 0x811fdcfe)},
+          {TOBN(0x36527ec1, 0x666fba0c), TOBN(0x69948197, 0x14754635),
+           TOBN(0xfcdcb1a8, 0x556da9c2), TOBN(0xa5934267, 0x81a732b2)}},
+         {{TOBN(0xec1214ed, 0xa714181d), TOBN(0x609ac13b, 0x6067b341),
+           TOBN(0xff4b4c97, 0xa545df1f), TOBN(0xa1240501, 0x34d2076b)},
+          {TOBN(0x6efa0c23, 0x1409ca97), TOBN(0x254cc1a8, 0x20638c43),
+           TOBN(0xd4e363af, 0xdcfb46cd), TOBN(0x62c2adc3, 0x03942a27)}},
+         {{TOBN(0xc67b9df0, 0x56e46483), TOBN(0xa55abb20, 0x63736356),
+           TOBN(0xab93c098, 0xc551bc52), TOBN(0x382b49f9, 0xb15fe64b)},
+          {TOBN(0x9ec221ad, 0x4dff8d47), TOBN(0x79caf615, 0x437df4d6),
+           TOBN(0x5f13dc64, 0xbb456509), TOBN(0xe4c589d9, 0x191f0714)}},
+         {{TOBN(0x27b6a8ab, 0x3fd40e09), TOBN(0xe455842e, 0x77313ea9),
+           TOBN(0x8b51d1e2, 0x1f55988b), TOBN(0x5716dd73, 0x062bbbfc)},
+          {TOBN(0x633c11e5, 0x4e8bf3de), TOBN(0x9a0e77b6, 0x1b85be3b),
+           TOBN(0x56510729, 0x0911cca6), TOBN(0x27e76495, 0xefa6590f)}},
+         {{TOBN(0xe4ac8b33, 0x070d3aab), TOBN(0x2643672b, 0x9a2cd5e5),
+           TOBN(0x52eff79b, 0x1cfc9173), TOBN(0x665ca49b, 0x90a7c13f)},
+          {TOBN(0x5a8dda59, 0xb3efb998), TOBN(0x8a5b922d, 0x052f1341),
+           TOBN(0xae9ebbab, 0x3cf9a530), TOBN(0x35986e7b, 0xf56da4d7)}},
+         {{TOBN(0x3a636b5c, 0xff3513cc), TOBN(0xbb0cf8ba, 0x3198f7dd),
+           TOBN(0xb8d40522, 0x41f16f86), TOBN(0x760575d8, 0xde13a7bf)},
+          {TOBN(0x36f74e16, 0x9f7aa181), TOBN(0x163a3ecf, 0xf509ed1c),
+           TOBN(0x6aead61f, 0x3c40a491), TOBN(0x158c95fc, 0xdfe8fcaa)}},
+         {{TOBN(0xa3991b6e, 0x13cda46f), TOBN(0x79482415, 0x342faed0),
+           TOBN(0xf3ba5bde, 0x666b5970), TOBN(0x1d52e6bc, 0xb26ab6dd)},
+          {TOBN(0x768ba1e7, 0x8608dd3d), TOBN(0x4930db2a, 0xea076586),
+           TOBN(0xd9575714, 0xe7dc1afa), TOBN(0x1fc7bf7d, 0xf7c58817)}},
+         {{TOBN(0x6b47accd, 0xd9eee96c), TOBN(0x0ca277fb, 0xe58cec37),
+           TOBN(0x113fe413, 0xe702c42a), TOBN(0xdd1764ee, 0xc47cbe51)},
+          {TOBN(0x041e7cde, 0x7b3ed739), TOBN(0x50cb7459, 0x5ce9e1c0),
+           TOBN(0x35568513, 0x2925b212), TOBN(0x7cff95c4, 0x001b081c)}},
+         {{TOBN(0x63ee4cbd, 0x8088b454), TOBN(0xdb7f32f7, 0x9a9e0c8a),
+           TOBN(0xb377d418, 0x6b2447cb), TOBN(0xe3e982aa, 0xd370219b)},
+          {TOBN(0x06ccc1e4, 0xc2a2a593), TOBN(0x72c36865, 0x0773f24f),
+           TOBN(0xa13b4da7, 0x95859423), TOBN(0x8bbf1d33, 0x75040c8f)}},
+         {{TOBN(0x726f0973, 0xda50c991), TOBN(0x48afcd5b, 0x822d6ee2),
+           TOBN(0xe5fc718b, 0x20fd7771), TOBN(0xb9e8e77d, 0xfd0807a1)},
+          {TOBN(0x7f5e0f44, 0x99a7703d), TOBN(0x6972930e, 0x618e36f3),
+           TOBN(0x2b7c77b8, 0x23807bbe), TOBN(0xe5b82405, 0xcb27ff50)}},
+         {{TOBN(0xba8b8be3, 0xbd379062), TOBN(0xd64b7a1d, 0x2dce4a92),
+           TOBN(0x040a73c5, 0xb2952e37), TOBN(0x0a9e252e, 0xd438aeca)},
+          {TOBN(0xdd43956b, 0xc39d3bcb), TOBN(0x1a31ca00, 0xb32b2d63),
+           TOBN(0xd67133b8, 0x5c417a18), TOBN(0xd08e4790, 0x2ef442c8)}},
+         {{TOBN(0x98cb1ae9, 0x255c0980), TOBN(0x4bd86381, 0x2b4a739f),
+           TOBN(0x5a5c31e1, 0x1e4a45a1), TOBN(0x1e5d55fe, 0x9cb0db2f)},
+          {TOBN(0x74661b06, 0x8ff5cc29), TOBN(0x026b389f, 0x0eb8a4f4),
+           TOBN(0x536b21a4, 0x58848c24), TOBN(0x2e5bf8ec, 0x81dc72b0)}},
+         {{TOBN(0x03c187d0, 0xad886aac), TOBN(0x5c16878a, 0xb771b645),
+           TOBN(0xb07dfc6f, 0xc74045ab), TOBN(0x2c6360bf, 0x7800caed)},
+          {TOBN(0x24295bb5, 0xb9c972a3), TOBN(0xc9e6f88e, 0x7c9a6dba),
+           TOBN(0x90ffbf24, 0x92a79aa6), TOBN(0xde29d50a, 0x41c26ac2)}},
+         {{TOBN(0x9f0af483, 0xd309cbe6), TOBN(0x5b020d8a, 0xe0bced4f),
+           TOBN(0x606e986d, 0xb38023e3), TOBN(0xad8f2c9d, 0x1abc6933)},
+          {TOBN(0x19292e1d, 0xe7400e93), TOBN(0xfe3e18a9, 0x52be5e4d),
+           TOBN(0xe8e9771d, 0x2e0680bf), TOBN(0x8c5bec98, 0xc54db063)}},
+         {{TOBN(0x2af9662a, 0x74a55d1f), TOBN(0xe3fbf28f, 0x046f66d8),
+           TOBN(0xa3a72ab4, 0xd4dc4794), TOBN(0x09779f45, 0x5c7c2dd8)},
+          {TOBN(0xd893bdaf, 0xc3d19d8d), TOBN(0xd5a75094, 0x57d6a6df),
+           TOBN(0x8cf8fef9, 0x952e6255), TOBN(0x3da67cfb, 0xda9a8aff)}},
+         {{TOBN(0x4c23f62a, 0x2c160dcd), TOBN(0x34e6c5e3, 0x8f90eaef),
+           TOBN(0x35865519, 0xa9a65d5a), TOBN(0x07c48aae, 0x8fd38a3d)},
+          {TOBN(0xb7e7aeda, 0x50068527), TOBN(0x2c09ef23, 0x1c90936a),
+           TOBN(0x31ecfeb6, 0xe879324c), TOBN(0xa0871f6b, 0xfb0ec938)}},
+         {{TOBN(0xb1f0fb68, 0xd84d835d), TOBN(0xc90caf39, 0x861dc1e6),
+           TOBN(0x12e5b046, 0x7594f8d7), TOBN(0x26897ae2, 0x65012b92)},
+          {TOBN(0xbcf68a08, 0xa4d6755d), TOBN(0x403ee41c, 0x0991fbda),
+           TOBN(0x733e343e, 0x3bbf17e8), TOBN(0xd2c7980d, 0x679b3d65)}},
+         {{TOBN(0x33056232, 0xd2e11305), TOBN(0x966be492, 0xf3c07a6f),
+           TOBN(0x6a8878ff, 0xbb15509d), TOBN(0xff221101, 0x0a9b59a4)},
+          {TOBN(0x6c9f564a, 0xabe30129), TOBN(0xc6f2c940, 0x336e64cf),
+           TOBN(0x0fe75262, 0x8b0c8022), TOBN(0xbe0267e9, 0x6ae8db87)}},
+         {{TOBN(0x22e192f1, 0x93bc042b), TOBN(0xf085b534, 0xb237c458),
+           TOBN(0xa0d192bd, 0x832c4168), TOBN(0x7a76e9e3, 0xbdf6271d)},
+          {TOBN(0x52a882fa, 0xb88911b5), TOBN(0xc85345e4, 0xb4db0eb5),
+           TOBN(0xa3be02a6, 0x81a7c3ff), TOBN(0x51889c8c, 0xf0ec0469)}},
+         {{TOBN(0x9d031369, 0xa5e829e5), TOBN(0xcbb4c6fc, 0x1607aa41),
+           TOBN(0x75ac59a6, 0x241d84c1), TOBN(0xc043f2bf, 0x8829e0ee)},
+          {TOBN(0x82a38f75, 0x8ea5e185), TOBN(0x8bda40b9, 0xd87cbd9f),
+           TOBN(0x9e65e75e, 0x2d8fc601), TOBN(0x3d515f74, 0xa35690b3)}},
+         {{TOBN(0x534acf4f, 0xda79e5ac), TOBN(0x68b83b3a, 0x8630215f),
+           TOBN(0x5c748b2e, 0xd085756e), TOBN(0xb0317258, 0xe5d37cb2)},
+          {TOBN(0x6735841a, 0xc5ccc2c4), TOBN(0x7d7dc96b, 0x3d9d5069),
+           TOBN(0xa147e410, 0xfd1754bd), TOBN(0x65296e94, 0xd399ddd5)}},
+         {{TOBN(0xf6b5b2d0, 0xbc8fa5bc), TOBN(0x8a5ead67, 0x500c277b),
+           TOBN(0x214625e6, 0xdfa08a5d), TOBN(0x51fdfedc, 0x959cf047)},
+          {TOBN(0x6bc9430b, 0x289fca32), TOBN(0xe36ff0cf, 0x9d9bdc3f),
+           TOBN(0x2fe187cb, 0x58ea0ede), TOBN(0xed66af20, 0x5a900b3f)}},
+         {{TOBN(0x00e0968b, 0x5fa9f4d6), TOBN(0x2d4066ce, 0x37a362e7),
+           TOBN(0xa99a9748, 0xbd07e772), TOBN(0x710989c0, 0x06a4f1d0)},
+          {TOBN(0xd5dedf35, 0xce40cbd8), TOBN(0xab55c5f0, 0x1743293d),
+           TOBN(0x766f1144, 0x8aa24e2c), TOBN(0x94d874f8, 0x605fbcb4)}},
+         {{TOBN(0xa365f0e8, 0xa518001b), TOBN(0xee605eb6, 0x9d04ef0f),
+           TOBN(0x5a3915cd, 0xba8d4d25), TOBN(0x44c0e1b8, 0xb5113472)},
+          {TOBN(0xcbb024e8, 0x8b6740dc), TOBN(0x89087a53, 0xee1d4f0c),
+           TOBN(0xa88fa05c, 0x1fc4e372), TOBN(0x8bf395cb, 0xaf8b3af2)}},
+         {{TOBN(0x1e71c9a1, 0xdeb8568b), TOBN(0xa35daea0, 0x80fb3d32),
+           TOBN(0xe8b6f266, 0x2cf8fb81), TOBN(0x6d51afe8, 0x9490696a)},
+          {TOBN(0x81beac6e, 0x51803a19), TOBN(0xe3d24b7f, 0x86219080),
+           TOBN(0x727cfd9d, 0xdf6f463c), TOBN(0x8c6865ca, 0x72284ee8)}},
+         {{TOBN(0x32c88b7d, 0xb743f4ef), TOBN(0x3793909b, 0xe7d11dce),
+           TOBN(0xd398f922, 0x2ff2ebe8), TOBN(0x2c70ca44, 0xe5e49796)},
+          {TOBN(0xdf4d9929, 0xcb1131b1), TOBN(0x7826f298, 0x25888e79),
+           TOBN(0x4d3a112c, 0xf1d8740a), TOBN(0x00384cb6, 0x270afa8b)}},
+         {{TOBN(0xcb64125b, 0x3ab48095), TOBN(0x3451c256, 0x62d05106),
+           TOBN(0xd73d577d, 0xa4955845), TOBN(0x39570c16, 0xbf9f4433)},
+          {TOBN(0xd7dfaad3, 0xadecf263), TOBN(0xf1c3d8d1, 0xdc76e102),
+           TOBN(0x5e774a58, 0x54c6a836), TOBN(0xdad4b672, 0x3e92d47b)}},
+         {{TOBN(0xbe7e990f, 0xf0d796a0), TOBN(0x5fc62478, 0xdf0e8b02),
+           TOBN(0x8aae8bf4, 0x030c00ad), TOBN(0x3d2db93b, 0x9004ba0f)},
+          {TOBN(0xe48c8a79, 0xd85d5ddc), TOBN(0xe907caa7, 0x6bb07f34),
+           TOBN(0x58db343a, 0xa39eaed5), TOBN(0x0ea6e007, 0xadaf5724)}},
+         {{TOBN(0xe00df169, 0xd23233f3), TOBN(0x3e322796, 0x77cb637f),
+           TOBN(0x1f897c0e, 0x1da0cf6c), TOBN(0xa651f5d8, 0x31d6bbdd)},
+          {TOBN(0xdd61af19, 0x1a230c76), TOBN(0xbd527272, 0xcdaa5e4a),
+           TOBN(0xca753636, 0xd0abcd7e), TOBN(0x78bdd37c, 0x370bd8dc)}},
+         {{TOBN(0xc23916c2, 0x17cd93fe), TOBN(0x65b97a4d, 0xdadce6e2),
+           TOBN(0xe04ed4eb, 0x174e42f8), TOBN(0x1491ccaa, 0xbb21480a)},
+          {TOBN(0x145a8280, 0x23196332), TOBN(0x3c3862d7, 0x587b479a),
+           TOBN(0x9f4a88a3, 0x01dcd0ed), TOBN(0x4da2b7ef, 0x3ea12f1f)}},
+         {{TOBN(0xf8e7ae33, 0xb126e48e), TOBN(0x404a0b32, 0xf494e237),
+           TOBN(0x9beac474, 0xc55acadb), TOBN(0x4ee5cf3b, 0xcbec9fd9)},
+          {TOBN(0x336b33b9, 0x7df3c8c3), TOBN(0xbd905fe3, 0xb76808fd),
+           TOBN(0x8f436981, 0xaa45c16a), TOBN(0x255c5bfa, 0x3dd27b62)}},
+         {{TOBN(0x71965cbf, 0xc3dd9b4d), TOBN(0xce23edbf, 0xfc068a87),
+           TOBN(0xb78d4725, 0x745b029b), TOBN(0x74610713, 0xcefdd9bd)},
+          {TOBN(0x7116f75f, 0x1266bf52), TOBN(0x02046722, 0x18e49bb6),
+           TOBN(0xdf43df9f, 0x3d6f19e3), TOBN(0xef1bc7d0, 0xe685cb2f)}},
+         {{TOBN(0xcddb27c1, 0x7078c432), TOBN(0xe1961b9c, 0xb77fedb7),
+           TOBN(0x1edc2f5c, 0xc2290570), TOBN(0x2c3fefca, 0x19cbd886)},
+          {TOBN(0xcf880a36, 0xc2af389a), TOBN(0x96c610fd, 0xbda71cea),
+           TOBN(0xf03977a9, 0x32aa8463), TOBN(0x8eb7763f, 0x8586d90a)}},
+         {{TOBN(0x3f342454, 0x2a296e77), TOBN(0xc8718683, 0x42837a35),
+           TOBN(0x7dc71090, 0x6a09c731), TOBN(0x54778ffb, 0x51b816db)},
+          {TOBN(0x6b33bfec, 0xaf06defd), TOBN(0xfe3c105f, 0x8592b70b),
+           TOBN(0xf937fda4, 0x61da6114), TOBN(0x3c13e651, 0x4c266ad7)}},
+         {{TOBN(0xe363a829, 0x855938e8), TOBN(0x2eeb5d9e, 0x9de54b72),
+           TOBN(0xbeb93b0e, 0x20ccfab9), TOBN(0x3dffbb5f, 0x25e61a25)},
+          {TOBN(0x7f655e43, 0x1acc093d), TOBN(0x0cb6cc3d, 0x3964ce61),
+           TOBN(0x6ab283a1, 0xe5e9b460), TOBN(0x55d787c5, 0xa1c7e72d)}},
+         {{TOBN(0x4d2efd47, 0xdeadbf02), TOBN(0x11e80219, 0xac459068),
+           TOBN(0x810c7626, 0x71f311f0), TOBN(0xfa17ef8d, 0x4ab6ef53)},
+          {TOBN(0xaf47fd25, 0x93e43bff), TOBN(0x5cb5ff3f, 0x0be40632),
+           TOBN(0x54687106, 0x8ee61da3), TOBN(0x7764196e, 0xb08afd0f)}},
+         {{TOBN(0x831ab3ed, 0xf0290a8f), TOBN(0xcae81966, 0xcb47c387),
+           TOBN(0xaad7dece, 0x184efb4f), TOBN(0xdcfc53b3, 0x4749110e)},
+          {TOBN(0x6698f23c, 0x4cb632f9), TOBN(0xc42a1ad6, 0xb91f8067),
+           TOBN(0xb116a81d, 0x6284180a), TOBN(0xebedf5f8, 0xe901326f)}},
+         {{TOBN(0xf2274c9f, 0x97e3e044), TOBN(0x42018520, 0x11d09fc9),
+           TOBN(0x56a65f17, 0xd18e6e23), TOBN(0x2ea61e2a, 0x352b683c)},
+          {TOBN(0x27d291bc, 0x575eaa94), TOBN(0x9e7bc721, 0xb8ff522d),
+           TOBN(0x5f7268bf, 0xa7f04d6f), TOBN(0x5868c73f, 0xaba41748)}},
+         {{TOBN(0x9f85c2db, 0x7be0eead), TOBN(0x511e7842, 0xff719135),
+           TOBN(0x5a06b1e9, 0xc5ea90d7), TOBN(0x0c19e283, 0x26fab631)},
+          {TOBN(0x8af8f0cf, 0xe9206c55), TOBN(0x89389cb4, 0x3553c06a),
+           TOBN(0x39dbed97, 0xf65f8004), TOBN(0x0621b037, 0xc508991d)}},
+         {{TOBN(0x1c52e635, 0x96e78cc4), TOBN(0x5385c8b2, 0x0c06b4a8),
+           TOBN(0xd84ddfdb, 0xb0e87d03), TOBN(0xc49dfb66, 0x934bafad)},
+          {TOBN(0x7071e170, 0x59f70772), TOBN(0x3a073a84, 0x3a1db56b),
+           TOBN(0x03494903, 0x3b8af190), TOBN(0x7d882de3, 0xd32920f0)}},
+         {{TOBN(0x91633f0a, 0xb2cf8940), TOBN(0x72b0b178, 0x6f948f51),
+           TOBN(0x2d28dc30, 0x782653c8), TOBN(0x88829849, 0xdb903a05)},
+          {TOBN(0xb8095d0c, 0x6a19d2bb), TOBN(0x4b9e7f0c, 0x86f782cb),
+           TOBN(0x7af73988, 0x2d907064), TOBN(0xd12be0fe, 0x8b32643c)}},
+         {{TOBN(0x358ed23d, 0x0e165dc3), TOBN(0x3d47ce62, 0x4e2378ce),
+           TOBN(0x7e2bb0b9, 0xfeb8a087), TOBN(0x3246e8ae, 0xe29e10b9)},
+          {TOBN(0x459f4ec7, 0x03ce2b4d), TOBN(0xe9b4ca1b, 0xbbc077cf),
+           TOBN(0x2613b4f2, 0x0e9940c1), TOBN(0xfc598bb9, 0x047d1eb1)}},
+         {{TOBN(0x9744c62b, 0x45036099), TOBN(0xa9dee742, 0x167c65d8),
+           TOBN(0x0c511525, 0xdabe1943), TOBN(0xda110554, 0x93c6c624)},
+          {TOBN(0xae00a52c, 0x651a3be2), TOBN(0xcda5111d, 0x884449a6),
+           TOBN(0x063c06f4, 0xff33bed1), TOBN(0x73baaf9a, 0x0d3d76b4)}},
+         {{TOBN(0x52fb0c9d, 0x7fc63668), TOBN(0x6886c9dd, 0x0c039cde),
+           TOBN(0x602bd599, 0x55b22351), TOBN(0xb00cab02, 0x360c7c13)},
+          {TOBN(0x8cb616bc, 0x81b69442), TOBN(0x41486700, 0xb55c3cee),
+           TOBN(0x71093281, 0xf49ba278), TOBN(0xad956d9c, 0x64a50710)}},
+         {{TOBN(0x9561f28b, 0x638a7e81), TOBN(0x54155cdf, 0x5980ddc3),
+           TOBN(0xb2db4a96, 0xd26f247a), TOBN(0x9d774e4e, 0x4787d100)},
+          {TOBN(0x1a9e6e2e, 0x078637d2), TOBN(0x1c363e2d, 0x5e0ae06a),
+           TOBN(0x7493483e, 0xe9cfa354), TOBN(0x76843cb3, 0x7f74b98d)}},
+         {{TOBN(0xbaca6591, 0xd4b66947), TOBN(0xb452ce98, 0x04460a8c),
+           TOBN(0x6830d246, 0x43768f55), TOBN(0xf4197ed8, 0x7dff12df)},
+          {TOBN(0x6521b472, 0x400dd0f7), TOBN(0x59f5ca8f, 0x4b1e7093),
+           TOBN(0x6feff11b, 0x080338ae), TOBN(0x0ada31f6, 0xa29ca3c6)}},
+         {{TOBN(0x24794eb6, 0x94a2c215), TOBN(0xd83a43ab, 0x05a57ab4),
+           TOBN(0x264a543a, 0x2a6f89fe), TOBN(0x2c2a3868, 0xdd5ec7c2)},
+          {TOBN(0xd3373940, 0x8439d9b2), TOBN(0x715ea672, 0x0acd1f11),
+           TOBN(0x42c1d235, 0xe7e6cc19), TOBN(0x81ce6e96, 0xb990585c)}},
+         {{TOBN(0x04e5dfe0, 0xd809c7bd), TOBN(0xd7b2580c, 0x8f1050ab),
+           TOBN(0x6d91ad78, 0xd8a4176f), TOBN(0x0af556ee, 0x4e2e897c)},
+          {TOBN(0x162a8b73, 0x921de0ac), TOBN(0x52ac9c22, 0x7ea78400),
+           TOBN(0xee2a4eea, 0xefce2174), TOBN(0xbe61844e, 0x6d637f79)}},
+         {{TOBN(0x0491f1bc, 0x789a283b), TOBN(0x72d3ac3d, 0x880836f4),
+           TOBN(0xaa1c5ea3, 0x88e5402d), TOBN(0x1b192421, 0xd5cc473d)},
+          {TOBN(0x5c0b9998, 0x9dc84cac), TOBN(0xb0a8482d, 0x9c6e75b8),
+           TOBN(0x639961d0, 0x3a191ce2), TOBN(0xda3bc865, 0x6d837930)}},
+         {{TOBN(0xca990653, 0x056e6f8f), TOBN(0x84861c41, 0x64d133a7),
+           TOBN(0x8b403276, 0x746abe40), TOBN(0xb7b4d51a, 0xebf8e303)},
+          {TOBN(0x05b43211, 0x220a255d), TOBN(0xc997152c, 0x02419e6e),
+           TOBN(0x76ff47b6, 0x630c2fea), TOBN(0x50518677, 0x281fdade)}},
+         {{TOBN(0x3283b8ba, 0xcf902b0b), TOBN(0x8d4b4eb5, 0x37db303b),
+           TOBN(0xcc89f42d, 0x755011bc), TOBN(0xb43d74bb, 0xdd09d19b)},
+          {TOBN(0x65746bc9, 0x8adba350), TOBN(0x364eaf8c, 0xb51c1927),
+           TOBN(0x13c76596, 0x10ad72ec), TOBN(0x30045121, 0xf8d40c20)}},
+         {{TOBN(0x6d2d99b7, 0xea7b979b), TOBN(0xcd78cd74, 0xe6fb3bcd),
+           TOBN(0x11e45a9e, 0x86cffbfe), TOBN(0x78a61cf4, 0x637024f6)},
+          {TOBN(0xd06bc872, 0x3d502295), TOBN(0xf1376854, 0x458cb288),
+           TOBN(0xb9db26a1, 0x342f8586), TOBN(0xf33effcf, 0x4beee09e)}},
+         {{TOBN(0xd7e0c4cd, 0xb30cfb3a), TOBN(0x6d09b8c1, 0x6c9db4c8),
+           TOBN(0x40ba1a42, 0x07c8d9df), TOBN(0x6fd495f7, 0x1c52c66d)},
+          {TOBN(0xfb0e169f, 0x275264da), TOBN(0x80c2b746, 0xe57d8362),
+           TOBN(0xedd987f7, 0x49ad7222), TOBN(0xfdc229af, 0x4398ec7b)}}},
+        {{{TOBN(0xb0d1ed84, 0x52666a58), TOBN(0x4bcb6e00, 0xe6a9c3c2),
+           TOBN(0x3c57411c, 0x26906408), TOBN(0xcfc20755, 0x13556400)},
+          {TOBN(0xa08b1c50, 0x5294dba3), TOBN(0xa30ba286, 0x8b7dd31e),
+           TOBN(0xd70ba90e, 0x991eca74), TOBN(0x094e142c, 0xe762c2b9)}},
+         {{TOBN(0xb81d783e, 0x979f3925), TOBN(0x1efd130a, 0xaf4c89a7),
+           TOBN(0x525c2144, 0xfd1bf7fa), TOBN(0x4b296904, 0x1b265a9e)},
+          {TOBN(0xed8e9634, 0xb9db65b6), TOBN(0x35c82e32, 0x03599d8a),
+           TOBN(0xdaa7a54f, 0x403563f3), TOBN(0x9df088ad, 0x022c38ab)}},
+         {{TOBN(0xe5cfb066, 0xbb3fd30a), TOBN(0x429169da, 0xeff0354e),
+           TOBN(0x809cf852, 0x3524e36c), TOBN(0x136f4fb3, 0x0155be1d)},
+          {TOBN(0x4826af01, 0x1fbba712), TOBN(0x6ef0f0b4, 0x506ba1a1),
+           TOBN(0xd9928b31, 0x77aea73e), TOBN(0xe2bf6af2, 0x5eaa244e)}},
+         {{TOBN(0x8d084f12, 0x4237b64b), TOBN(0x688ebe99, 0xe3ecfd07),
+           TOBN(0x57b8a70c, 0xf6845dd8), TOBN(0x808fc59c, 0x5da4a325)},
+          {TOBN(0xa9032b2b, 0xa3585862), TOBN(0xb66825d5, 0xedf29386),
+           TOBN(0xb5a5a8db, 0x431ec29b), TOBN(0xbb143a98, 0x3a1e8dc8)}},
+         {{TOBN(0x35ee94ce, 0x12ae381b), TOBN(0x3a7f176c, 0x86ccda90),
+           TOBN(0xc63a657e, 0x4606eaca), TOBN(0x9ae5a380, 0x43cd04df)},
+          {TOBN(0x9bec8d15, 0xed251b46), TOBN(0x1f5d6d30, 0xcaca5e64),
+           TOBN(0x347b3b35, 0x9ff20f07), TOBN(0x4d65f034, 0xf7e4b286)}},
+         {{TOBN(0x9e93ba24, 0xf111661e), TOBN(0xedced484, 0xb105eb04),
+           TOBN(0x96dc9ba1, 0xf424b578), TOBN(0xbf8f66b7, 0xe83e9069)},
+          {TOBN(0x872d4df4, 0xd7ed8216), TOBN(0xbf07f377, 0x8e2cbecf),
+           TOBN(0x4281d899, 0x98e73754), TOBN(0xfec85fbb, 0x8aab8708)}},
+         {{TOBN(0x9a3c0dee, 0xa5ba5b0b), TOBN(0xe6a116ce, 0x42d05299),
+           TOBN(0xae9775fe, 0xe9b02d42), TOBN(0x72b05200, 0xa1545cb6)},
+          {TOBN(0xbc506f7d, 0x31a3b4ea), TOBN(0xe5893078, 0x8bbd9b32),
+           TOBN(0xc8bc5f37, 0xe4b12a97), TOBN(0x6b000c06, 0x4a73b671)}},
+         {{TOBN(0x13b5bf22, 0x765fa7d0), TOBN(0x59805bf0, 0x1d6a5370),
+           TOBN(0x67a5e29d, 0x4280db98), TOBN(0x4f53916f, 0x776b1ce3)},
+          {TOBN(0x714ff61f, 0x33ddf626), TOBN(0x4206238e, 0xa085d103),
+           TOBN(0x1c50d4b7, 0xe5809ee3), TOBN(0x999f450d, 0x85f8eb1d)}},
+         {{TOBN(0x658a6051, 0xe4c79e9b), TOBN(0x1394cb73, 0xc66a9fea),
+           TOBN(0x27f31ed5, 0xc6be7b23), TOBN(0xf4c88f36, 0x5aa6f8fe)},
+          {TOBN(0x0fb0721f, 0x4aaa499e), TOBN(0x68b3a7d5, 0xe3fb2a6b),
+           TOBN(0xa788097d, 0x3a92851d), TOBN(0x060e7f8a, 0xe96f4913)}},
+         {{TOBN(0x82eebe73, 0x1a3a93bc), TOBN(0x42bbf465, 0xa21adc1a),
+           TOBN(0xc10b6fa4, 0xef030efd), TOBN(0x247aa4c7, 0x87b097bb)},
+          {TOBN(0x8b8dc632, 0xf60c77da), TOBN(0x6ffbc26a, 0xc223523e),
+           TOBN(0xa4f6ff11, 0x344579cf), TOBN(0x5825653c, 0x980250f6)}},
+         {{TOBN(0xb2dd097e, 0xbc1aa2b9), TOBN(0x07889393, 0x37a0333a),
+           TOBN(0x1cf55e71, 0x37a0db38), TOBN(0x2648487f, 0x792c1613)},
+          {TOBN(0xdad01336, 0x3fcef261), TOBN(0x6239c81d, 0x0eabf129),
+           TOBN(0x8ee761de, 0x9d276be2), TOBN(0x406a7a34, 0x1eda6ad3)}},
+         {{TOBN(0x4bf367ba, 0x4a493b31), TOBN(0x54f20a52, 0x9bf7f026),
+           TOBN(0xb696e062, 0x9795914b), TOBN(0xcddab96d, 0x8bf236ac)},
+          {TOBN(0x4ff2c70a, 0xed25ea13), TOBN(0xfa1d09eb, 0x81cbbbe7),
+           TOBN(0x88fc8c87, 0x468544c5), TOBN(0x847a670d, 0x696b3317)}},
+         {{TOBN(0xf133421e, 0x64bcb626), TOBN(0xaea638c8, 0x26dee0b5),
+           TOBN(0xd6e7680b, 0xb310346c), TOBN(0xe06f4097, 0xd5d4ced3)},
+          {TOBN(0x09961452, 0x7512a30b), TOBN(0xf3d867fd, 0xe589a59a),
+           TOBN(0x2e73254f, 0x52d0c180), TOBN(0x9063d8a3, 0x333c74ac)}},
+         {{TOBN(0xeda6c595, 0xd314e7bc), TOBN(0x2ee7464b, 0x467899ed),
+           TOBN(0x1cef423c, 0x0a1ed5d3), TOBN(0x217e76ea, 0x69cc7613)},
+          {TOBN(0x27ccce1f, 0xe7cda917), TOBN(0x12d8016b, 0x8a893f16),
+           TOBN(0xbcd6de84, 0x9fc74f6b), TOBN(0xfa5817e2, 0xf3144e61)}},
+         {{TOBN(0x1f354164, 0x0821ee4c), TOBN(0x1583eab4, 0x0bc61992),
+           TOBN(0x7490caf6, 0x1d72879f), TOBN(0x998ad9f3, 0xf76ae7b2)},
+          {TOBN(0x1e181950, 0xa41157f7), TOBN(0xa9d7e1e6, 0xe8da3a7e),
+           TOBN(0x963784eb, 0x8426b95f), TOBN(0x0ee4ed6e, 0x542e2a10)}},
+         {{TOBN(0xb79d4cc5, 0xac751e7b), TOBN(0x93f96472, 0xfd4211bd),
+           TOBN(0x8c72d3d2, 0xc8de4fc6), TOBN(0x7b69cbf5, 0xdf44f064)},
+          {TOBN(0x3da90ca2, 0xf4bf94e1), TOBN(0x1a5325f8, 0xf12894e2),
+           TOBN(0x0a437f6c, 0x7917d60b), TOBN(0x9be70486, 0x96c9cb5d)}},
+         {{TOBN(0xb4d880bf, 0xe1dc5c05), TOBN(0xd738adda, 0xeebeeb57),
+           TOBN(0x6f0119d3, 0xdf0fe6a3), TOBN(0x5c686e55, 0x66eaaf5a)},
+          {TOBN(0x9cb10b50, 0xdfd0b7ec), TOBN(0xbdd0264b, 0x6a497c21),
+           TOBN(0xfc093514, 0x8c546c96), TOBN(0x58a947fa, 0x79dbf42a)}},
+         {{TOBN(0xc0b48d4e, 0x49ccd6d7), TOBN(0xff8fb02c, 0x88bd5580),
+           TOBN(0xc75235e9, 0x07d473b2), TOBN(0x4fab1ac5, 0xa2188af3)},
+          {TOBN(0x030fa3bc, 0x97576ec0), TOBN(0xe8c946e8, 0x0b7e7d2f),
+           TOBN(0x40a5c9cc, 0x70305600), TOBN(0x6d8260a9, 0xc8b013b4)}},
+         {{TOBN(0x0368304f, 0x70bba85c), TOBN(0xad090da1, 0xa4a0d311),
+           TOBN(0x7170e870, 0x2415eec1), TOBN(0xbfba35fe, 0x8461ea47)},
+          {TOBN(0x6279019a, 0xc1e91938), TOBN(0xa47638f3, 0x1afc415f),
+           TOBN(0x36c65cbb, 0xbcba0e0f), TOBN(0x02160efb, 0x034e2c48)}},
+         {{TOBN(0xe6c51073, 0x615cd9e4), TOBN(0x498ec047, 0xf1243c06),
+           TOBN(0x3e5a8809, 0xb17b3d8c), TOBN(0x5cd99e61, 0x0cc565f1)},
+          {TOBN(0x81e312df, 0x7851dafe), TOBN(0xf156f5ba, 0xa79061e2),
+           TOBN(0x80d62b71, 0x880c590e), TOBN(0xbec9746f, 0x0a39faa1)}},
+         {{TOBN(0x1d98a9c1, 0xc8ed1f7a), TOBN(0x09e43bb5, 0xa81d5ff2),
+           TOBN(0xd5f00f68, 0x0da0794a), TOBN(0x412050d9, 0x661aa836)},
+          {TOBN(0xa89f7c4e, 0x90747e40), TOBN(0x6dc05ebb, 0xb62a3686),
+           TOBN(0xdf4de847, 0x308e3353), TOBN(0x53868fbb, 0x9fb53bb9)}},
+         {{TOBN(0x2b09d2c3, 0xcfdcf7dd), TOBN(0x41a9fce3, 0x723fcab4),
+           TOBN(0x73d905f7, 0x07f57ca3), TOBN(0x080f9fb1, 0xac8e1555)},
+          {TOBN(0x7c088e84, 0x9ba7a531), TOBN(0x07d35586, 0xed9a147f),
+           TOBN(0x602846ab, 0xaf48c336), TOBN(0x7320fd32, 0x0ccf0e79)}},
+         {{TOBN(0xaa780798, 0xb18bd1ff), TOBN(0x52c2e300, 0xafdd2905),
+           TOBN(0xf27ea3d6, 0x434267cd), TOBN(0x8b96d16d, 0x15605b5f)},
+          {TOBN(0x7bb31049, 0x4b45706b), TOBN(0xe7f58b8e, 0x743d25f8),
+           TOBN(0xe9b5e45b, 0x87f30076), TOBN(0xd19448d6, 0x5d053d5a)}},
+         {{TOBN(0x1ecc8cb9, 0xd3210a04), TOBN(0x6bc7d463, 0xdafb5269),
+           TOBN(0x3e59b10a, 0x67c3489f), TOBN(0x1769788c, 0x65641e1b)},
+          {TOBN(0x8a53b82d, 0xbd6cb838), TOBN(0x7066d6e6, 0x236d5f22),
+           TOBN(0x03aa1c61, 0x6908536e), TOBN(0xc971da0d, 0x66ae9809)}},
+         {{TOBN(0x01b3a86b, 0xc49a2fac), TOBN(0x3b8420c0, 0x3092e77a),
+           TOBN(0x02057300, 0x7d6fb556), TOBN(0x6941b2a1, 0xbff40a87)},
+          {TOBN(0x140b6308, 0x0658ff2a), TOBN(0x87804363, 0x3424ab36),
+           TOBN(0x0253bd51, 0x5751e299), TOBN(0xc75bcd76, 0x449c3e3a)}},
+         {{TOBN(0x92eb4090, 0x7f8f875d), TOBN(0x9c9d754e, 0x56c26bbf),
+           TOBN(0x158cea61, 0x8110bbe7), TOBN(0x62a6b802, 0x745f91ea)},
+          {TOBN(0xa79c41aa, 0xc6e7394b), TOBN(0x445b6a83, 0xad57ef10),
+           TOBN(0x0c5277eb, 0x6ea6f40c), TOBN(0x319fe96b, 0x88633365)}},
+         {{TOBN(0x0b0fc61f, 0x385f63cb), TOBN(0x41250c84, 0x22bdd127),
+           TOBN(0x67d153f1, 0x09e942c2), TOBN(0x60920d08, 0xc021ad5d)},
+          {TOBN(0x229f5746, 0x724d81a5), TOBN(0xb7ffb892, 0x5bba3299),
+           TOBN(0x518c51a1, 0xde413032), TOBN(0x2a9bfe77, 0x3c2fd94c)}},
+         {{TOBN(0xcbcde239, 0x3191f4fd), TOBN(0x43093e16, 0xd3d6ada1),
+           TOBN(0x184579f3, 0x58769606), TOBN(0x2c94a8b3, 0xd236625c)},
+          {TOBN(0x6922b9c0, 0x5c437d8e), TOBN(0x3d4ae423, 0xd8d9f3c8),
+           TOBN(0xf72c31c1, 0x2e7090a2), TOBN(0x4ac3f5f3, 0xd76a55bd)}},
+         {{TOBN(0x342508fc, 0x6b6af991), TOBN(0x0d527100, 0x1b5cebbd),
+           TOBN(0xb84740d0, 0xdd440dd7), TOBN(0x748ef841, 0x780162fd)},
+          {TOBN(0xa8dbfe0e, 0xdfc6fafb), TOBN(0xeadfdf05, 0xf7300f27),
+           TOBN(0x7d06555f, 0xfeba4ec9), TOBN(0x12c56f83, 0x9e25fa97)}},
+         {{TOBN(0x77f84203, 0xd39b8c34), TOBN(0xed8b1be6, 0x3125eddb),
+           TOBN(0x5bbf2441, 0xf6e39dc5), TOBN(0xb00f6ee6, 0x6a5d678a)},
+          {TOBN(0xba456ecf, 0x57d0ea99), TOBN(0xdcae0f58, 0x17e06c43),
+           TOBN(0x01643de4, 0x0f5b4baa), TOBN(0x2c324341, 0xd161b9be)}},
+         {{TOBN(0x80177f55, 0xe126d468), TOBN(0xed325f1f, 0x76748e09),
+           TOBN(0x6116004a, 0xcfa9bdc2), TOBN(0x2d8607e6, 0x3a9fb468)},
+          {TOBN(0x0e573e27, 0x6009d660), TOBN(0x3a525d2e, 0x8d10c5a1),
+           TOBN(0xd26cb45c, 0x3b9009a0), TOBN(0xb6b0cdc0, 0xde9d7448)}},
+         {{TOBN(0x949c9976, 0xe1337c26), TOBN(0x6faadebd, 0xd73d68e5),
+           TOBN(0x9e158614, 0xf1b768d9), TOBN(0x22dfa557, 0x9cc4f069)},
+          {TOBN(0xccd6da17, 0xbe93c6d6), TOBN(0x24866c61, 0xa504f5b9),
+           TOBN(0x2121353c, 0x8d694da1), TOBN(0x1c6ca580, 0x0140b8c6)}},
+         {{TOBN(0xc245ad8c, 0xe964021e), TOBN(0xb83bffba, 0x032b82b3),
+           TOBN(0xfaa220c6, 0x47ef9898), TOBN(0x7e8d3ac6, 0x982c948a)},
+          {TOBN(0x1faa2091, 0xbc2d124a), TOBN(0xbd54c3dd, 0x05b15ff4),
+           TOBN(0x386bf3ab, 0xc87c6fb7), TOBN(0xfb2b0563, 0xfdeb6f66)}},
+         {{TOBN(0x4e77c557, 0x5b45afb4), TOBN(0xe9ded649, 0xefb8912d),
+           TOBN(0x7ec9bbf5, 0x42f6e557), TOBN(0x2570dfff, 0x62671f00)},
+          {TOBN(0x2b3bfb78, 0x88e084bd), TOBN(0xa024b238, 0xf37fe5b4),
+           TOBN(0x44e7dc04, 0x95649aee), TOBN(0x498ca255, 0x5e7ec1d8)}},
+         {{TOBN(0x3bc766ea, 0xaaa07e86), TOBN(0x0db6facb, 0xf3608586),
+           TOBN(0xbadd2549, 0xbdc259c8), TOBN(0x95af3c6e, 0x041c649f)},
+          {TOBN(0xb36a928c, 0x02e30afb), TOBN(0x9b5356ad, 0x008a88b8),
+           TOBN(0x4b67a5f1, 0xcf1d9e9d), TOBN(0xc6542e47, 0xa5d8d8ce)}},
+         {{TOBN(0x73061fe8, 0x7adfb6cc), TOBN(0xcc826fd3, 0x98678141),
+           TOBN(0x00e758b1, 0x3c80515a), TOBN(0x6afe3247, 0x41485083)},
+          {TOBN(0x0fcb08b9, 0xb6ae8a75), TOBN(0xb8cf388d, 0x4acf51e1),
+           TOBN(0x344a5560, 0x6961b9d6), TOBN(0x1a6778b8, 0x6a97fd0c)}},
+         {{TOBN(0xd840fdc1, 0xecc4c7e3), TOBN(0xde9fe47d, 0x16db68cc),
+           TOBN(0xe95f89de, 0xa3e216aa), TOBN(0x84f1a6a4, 0x9594a8be)},
+          {TOBN(0x7ddc7d72, 0x5a7b162b), TOBN(0xc5cfda19, 0xadc817a3),
+           TOBN(0x80a5d350, 0x78b58d46), TOBN(0x93365b13, 0x82978f19)}},
+         {{TOBN(0x2e44d225, 0x26a1fc90), TOBN(0x0d6d10d2, 0x4d70705d),
+           TOBN(0xd94b6b10, 0xd70c45f4), TOBN(0x0f201022, 0xb216c079)},
+          {TOBN(0xcec966c5, 0x658fde41), TOBN(0xa8d2bc7d, 0x7e27601d),
+           TOBN(0xbfcce3e1, 0xff230be7), TOBN(0x3394ff6b, 0x0033ffb5)}},
+         {{TOBN(0xd890c509, 0x8132c9af), TOBN(0xaac4b0eb, 0x361e7868),
+           TOBN(0x5194ded3, 0xe82d15aa), TOBN(0x4550bd2e, 0x23ae6b7d)},
+          {TOBN(0x3fda318e, 0xea5399d4), TOBN(0xd989bffa, 0x91638b80),
+           TOBN(0x5ea124d0, 0xa14aa12d), TOBN(0x1fb1b899, 0x3667b944)}},
+         {{TOBN(0x95ec7969, 0x44c44d6a), TOBN(0x91df144a, 0x57e86137),
+           TOBN(0x915fd620, 0x73adac44), TOBN(0x8f01732d, 0x59a83801)},
+          {TOBN(0xec579d25, 0x3aa0a633), TOBN(0x06de5e7c, 0xc9d6d59c),
+           TOBN(0xc132f958, 0xb1ef8010), TOBN(0x29476f96, 0xe65c1a02)}},
+         {{TOBN(0x336a77c0, 0xd34c3565), TOBN(0xef1105b2, 0x1b9f1e9e),
+           TOBN(0x63e6d08b, 0xf9e08002), TOBN(0x9aff2f21, 0xc613809e)},
+          {TOBN(0xb5754f85, 0x3a80e75d), TOBN(0xde71853e, 0x6bbda681),
+           TOBN(0x86f041df, 0x8197fd7a), TOBN(0x8b332e08, 0x127817fa)}},
+         {{TOBN(0x05d99be8, 0xb9c20cda), TOBN(0x89f7aad5, 0xd5cd0c98),
+           TOBN(0x7ef936fe, 0x5bb94183), TOBN(0x92ca0753, 0xb05cd7f2)},
+          {TOBN(0x9d65db11, 0x74a1e035), TOBN(0x02628cc8, 0x13eaea92),
+           TOBN(0xf2d9e242, 0x49e4fbf2), TOBN(0x94fdfd9b, 0xe384f8b7)}},
+         {{TOBN(0x65f56054, 0x63428c6b), TOBN(0x2f7205b2, 0x90b409a5),
+           TOBN(0xf778bb78, 0xff45ae11), TOBN(0xa13045be, 0xc5ee53b2)},
+          {TOBN(0xe00a14ff, 0x03ef77fe), TOBN(0x689cd59f, 0xffef8bef),
+           TOBN(0x3578f0ed, 0x1e9ade22), TOBN(0xe99f3ec0, 0x6268b6a8)}},
+         {{TOBN(0xa2057d91, 0xea1b3c3e), TOBN(0x2d1a7053, 0xb8823a4a),
+           TOBN(0xabbb336a, 0x2cca451e), TOBN(0xcd2466e3, 0x2218bb5d)},
+          {TOBN(0x3ac1f42f, 0xc8cb762d), TOBN(0x7e312aae, 0x7690211f),
+           TOBN(0xebb9bd73, 0x45d07450), TOBN(0x207c4b82, 0x46c2213f)}},
+         {{TOBN(0x99d425c1, 0x375913ec), TOBN(0x94e45e96, 0x67908220),
+           TOBN(0xc08f3087, 0xcd67dbf6), TOBN(0xa5670fbe, 0xc0887056)},
+          {TOBN(0x6717b64a, 0x66f5b8fc), TOBN(0xd5a56aea, 0x786fec28),
+           TOBN(0xa8c3f55f, 0xc0ff4952), TOBN(0xa77fefae, 0x457ac49b)}},
+         {{TOBN(0x29882d7c, 0x98379d44), TOBN(0xd000bdfb, 0x509edc8a),
+           TOBN(0xc6f95979, 0xe66fe464), TOBN(0x504a6115, 0xfa61bde0)},
+          {TOBN(0x56b3b871, 0xeffea31a), TOBN(0x2d3de26d, 0xf0c21a54),
+           TOBN(0x21dbff31, 0x834753bf), TOBN(0xe67ecf49, 0x69269d86)}},
+         {{TOBN(0x7a176952, 0x151fe690), TOBN(0x03515804, 0x7f2adb5f),
+           TOBN(0xee794b15, 0xd1b62a8d), TOBN(0xf004ceec, 0xaae454e6)},
+          {TOBN(0x0897ea7c, 0xf0386fac), TOBN(0x3b62ff12, 0xd1fca751),
+           TOBN(0x154181df, 0x1b7a04ec), TOBN(0x2008e04a, 0xfb5847ec)}},
+         {{TOBN(0xd147148e, 0x41dbd772), TOBN(0x2b419f73, 0x22942654),
+           TOBN(0x669f30d3, 0xe9c544f7), TOBN(0x52a2c223, 0xc8540149)},
+          {TOBN(0x5da9ee14, 0x634dfb02), TOBN(0x5f074ff0, 0xf47869f3),
+           TOBN(0x74ee878d, 0xa3933acc), TOBN(0xe6510651, 0x4fe35ed1)}},
+         {{TOBN(0xb3eb9482, 0xf1012e7a), TOBN(0x51013cc0, 0xa8a566ae),
+           TOBN(0xdd5e9243, 0x47c00d3b), TOBN(0x7fde089d, 0x946bb0e5)},
+          {TOBN(0x030754fe, 0xc731b4b3), TOBN(0x12a136a4, 0x99fda062),
+           TOBN(0x7c1064b8, 0x5a1a35bc), TOBN(0xbf1f5763, 0x446c84ef)}},
+         {{TOBN(0xed29a56d, 0xa16d4b34), TOBN(0x7fba9d09, 0xdca21c4f),
+           TOBN(0x66d7ac00, 0x6d8de486), TOBN(0x60061987, 0x73a2a5e1)},
+          {TOBN(0x8b400f86, 0x9da28ff0), TOBN(0x3133f708, 0x43c4599c),
+           TOBN(0x9911c9b8, 0xee28cb0d), TOBN(0xcd7e2874, 0x8e0af61d)}},
+         {{TOBN(0x5a85f0f2, 0x72ed91fc), TOBN(0x85214f31, 0x9cd4a373),
+           TOBN(0x881fe5be, 0x1925253c), TOBN(0xd8dc98e0, 0x91e8bc76)},
+          {TOBN(0x7120affe, 0x585cc3a2), TOBN(0x724952ed, 0x735bf97a),
+           TOBN(0x5581e7dc, 0x3eb34581), TOBN(0x5cbff4f2, 0xe52ee57d)}},
+         {{TOBN(0x8d320a0e, 0x87d8cc7b), TOBN(0x9beaa7f3, 0xf1d280d0),
+           TOBN(0x7a0b9571, 0x9beec704), TOBN(0x9126332e, 0x5b7f0057)},
+          {TOBN(0x01fbc1b4, 0x8ed3bd6d), TOBN(0x35bb2c12, 0xd945eb24),
+           TOBN(0x6404694e, 0x9a8ae255), TOBN(0xb6092eec, 0x8d6abfb3)}},
+         {{TOBN(0x4d76143f, 0xcc058865), TOBN(0x7b0a5af2, 0x6e249922),
+           TOBN(0x8aef9440, 0x6a50d353), TOBN(0xe11e4bcc, 0x64f0e07a)},
+          {TOBN(0x4472993a, 0xa14a90fa), TOBN(0x7706e20c, 0xba0c51d4),
+           TOBN(0xf403292f, 0x1532672d), TOBN(0x52573bfa, 0x21829382)}},
+         {{TOBN(0x6a7bb6a9, 0x3b5bdb83), TOBN(0x08da65c0, 0xa4a72318),
+           TOBN(0xc58d22aa, 0x63eb065f), TOBN(0x1717596c, 0x1b15d685)},
+          {TOBN(0x112df0d0, 0xb266d88b), TOBN(0xf688ae97, 0x5941945a),
+           TOBN(0x487386e3, 0x7c292cac), TOBN(0x42f3b50d, 0x57d6985c)}},
+         {{TOBN(0x6da4f998, 0x6a90fc34), TOBN(0xc8f257d3, 0x65ca8a8d),
+           TOBN(0xc2feabca, 0x6951f762), TOBN(0xe1bc81d0, 0x74c323ac)},
+          {TOBN(0x1bc68f67, 0x251a2a12), TOBN(0x10d86587, 0xbe8a70dc),
+           TOBN(0xd648af7f, 0xf0f84d2e), TOBN(0xf0aa9ebc, 0x6a43ac92)}},
+         {{TOBN(0x69e3be04, 0x27596893), TOBN(0xb6bb02a6, 0x45bf452b),
+           TOBN(0x0875c11a, 0xf4c698c8), TOBN(0x6652b5c7, 0xbece3794)},
+          {TOBN(0x7b3755fd, 0x4f5c0499), TOBN(0x6ea16558, 0xb5532b38),
+           TOBN(0xd1c69889, 0xa2e96ef7), TOBN(0x9c773c3a, 0x61ed8f48)}},
+         {{TOBN(0x2b653a40, 0x9b323abc), TOBN(0xe26605e1, 0xf0e1d791),
+           TOBN(0x45d41064, 0x4a87157a), TOBN(0x8f9a78b7, 0xcbbce616)},
+          {TOBN(0xcf1e44aa, 0xc407eddd), TOBN(0x81ddd1d8, 0xa35b964f),
+           TOBN(0x473e339e, 0xfd083999), TOBN(0x6c94bdde, 0x8e796802)}},
+         {{TOBN(0x5a304ada, 0x8545d185), TOBN(0x82ae44ea, 0x738bb8cb),
+           TOBN(0x628a35e3, 0xdf87e10e), TOBN(0xd3624f3d, 0xa15b9fe3)},
+          {TOBN(0xcc44209b, 0x14be4254), TOBN(0x7d0efcbc, 0xbdbc2ea5),
+           TOBN(0x1f603362, 0x04c37bbe), TOBN(0x21f363f5, 0x56a5852c)}},
+         {{TOBN(0xa1503d1c, 0xa8501550), TOBN(0x2251e0e1, 0xd8ab10bb),
+           TOBN(0xde129c96, 0x6961c51c), TOBN(0x1f7246a4, 0x81910f68)},
+          {TOBN(0x2eb744ee, 0x5f2591f2), TOBN(0x3c47d33f, 0x5e627157),
+           TOBN(0x4d6d62c9, 0x22f3bd68), TOBN(0x6120a64b, 0xcb8df856)}},
+         {{TOBN(0x3a9ac6c0, 0x7b5d07df), TOBN(0xa92b9558, 0x7ef39783),
+           TOBN(0xe128a134, 0xab3a9b4f), TOBN(0x41c18807, 0xb1252f05)},
+          {TOBN(0xfc7ed089, 0x80ba9b1c), TOBN(0xac8dc6de, 0xc532a9dd),
+           TOBN(0xbf829cef, 0x55246809), TOBN(0x101b784f, 0x5b4ee80f)}},
+         {{TOBN(0xc09945bb, 0xb6f11603), TOBN(0x57b09dbe, 0x41d2801e),
+           TOBN(0xfba5202f, 0xa97534a8), TOBN(0x7fd8ae5f, 0xc17b9614)},
+          {TOBN(0xa50ba666, 0x78308435), TOBN(0x9572f77c, 0xd3868c4d),
+           TOBN(0x0cef7bfd, 0x2dd7aab0), TOBN(0xe7958e08, 0x2c7c79ff)}},
+         {{TOBN(0x81262e42, 0x25346689), TOBN(0x716da290, 0xb07c7004),
+           TOBN(0x35f911ea, 0xb7950ee3), TOBN(0x6fd72969, 0x261d21b5)},
+          {TOBN(0x52389803, 0x08b640d3), TOBN(0x5b0026ee, 0x887f12a1),
+           TOBN(0x20e21660, 0x742e9311), TOBN(0x0ef6d541, 0x5ff77ff7)}},
+         {{TOBN(0x969127f0, 0xf9c41135), TOBN(0xf21d60c9, 0x68a64993),
+           TOBN(0x656e5d0c, 0xe541875c), TOBN(0xf1e0f84e, 0xa1d3c233)},
+          {TOBN(0x9bcca359, 0x06002d60), TOBN(0xbe2da60c, 0x06191552),
+           TOBN(0x5da8bbae, 0x61181ec3), TOBN(0x9f04b823, 0x65806f19)}},
+         {{TOBN(0xf1604a7d, 0xd4b79bb8), TOBN(0xaee806fb, 0x52c878c8),
+           TOBN(0x34144f11, 0x8d47b8e8), TOBN(0x72edf52b, 0x949f9054)},
+          {TOBN(0xebfca84e, 0x2127015a), TOBN(0x9051d0c0, 0x9cb7cef3),
+           TOBN(0x86e8fe58, 0x296deec8), TOBN(0x33b28188, 0x41010d74)}}},
+        {{{TOBN(0x01079383, 0x171b445f), TOBN(0x9bcf21e3, 0x8131ad4c),
+           TOBN(0x8cdfe205, 0xc93987e8), TOBN(0xe63f4152, 0xc92e8c8f)},
+          {TOBN(0x729462a9, 0x30add43d), TOBN(0x62ebb143, 0xc980f05a),
+           TOBN(0x4f3954e5, 0x3b06e968), TOBN(0xfe1d75ad, 0x242cf6b1)}},
+         {{TOBN(0x5f95c6c7, 0xaf8685c8), TOBN(0xd4c1c8ce, 0x2f8f01aa),
+           TOBN(0xc44bbe32, 0x2574692a), TOBN(0xb8003478, 0xd4a4a068)},
+          {TOBN(0x7c8fc6e5, 0x2eca3cdb), TOBN(0xea1db16b, 0xec04d399),
+           TOBN(0xb05bc82e, 0x8f2bc5cf), TOBN(0x763d517f, 0xf44793d2)}},
+         {{TOBN(0x4451c1b8, 0x08bd98d0), TOBN(0x644b1cd4, 0x6575f240),
+           TOBN(0x6907eb33, 0x7375d270), TOBN(0x56c8bebd, 0xfa2286bd)},
+          {TOBN(0xc713d2ac, 0xc4632b46), TOBN(0x17da427a, 0xafd60242),
+           TOBN(0x313065b7, 0xc95c7546), TOBN(0xf8239898, 0xbf17a3de)}},
+         {{TOBN(0xf3b7963f, 0x4c830320), TOBN(0x842c7aa0, 0x903203e3),
+           TOBN(0xaf22ca0a, 0xe7327afb), TOBN(0x38e13092, 0x967609b6)},
+          {TOBN(0x73b8fb62, 0x757558f1), TOBN(0x3cc3e831, 0xf7eca8c1),
+           TOBN(0xe4174474, 0xf6331627), TOBN(0xa77989ca, 0xc3c40234)}},
+         {{TOBN(0xe5fd17a1, 0x44a081e0), TOBN(0xd797fb7d, 0xb70e296a),
+           TOBN(0x2b472b30, 0x481f719c), TOBN(0x0e632a98, 0xfe6f8c52)},
+          {TOBN(0x89ccd116, 0xc5f0c284), TOBN(0xf51088af, 0x2d987c62),
+           TOBN(0x2a2bccda, 0x4c2de6cf), TOBN(0x810f9efe, 0xf679f0f9)}},
+         {{TOBN(0xb0f394b9, 0x7ffe4b3e), TOBN(0x0b691d21, 0xe5fa5d21),
+           TOBN(0xb0bd7747, 0x9dfbbc75), TOBN(0xd2830fda, 0xfaf78b00)},
+          {TOBN(0xf78c249c, 0x52434f57), TOBN(0x4b1f7545, 0x98096dab),
+           TOBN(0x73bf6f94, 0x8ff8c0b3), TOBN(0x34aef03d, 0x454e134c)}},
+         {{TOBN(0xf8d151f4, 0xb7ac7ec5), TOBN(0xd6ceb95a, 0xe50da7d5),
+           TOBN(0xa1b492b0, 0xdc3a0eb8), TOBN(0x75157b69, 0xb3dd2863)},
+          {TOBN(0xe2c4c74e, 0xc5413d62), TOBN(0xbe329ff7, 0xbc5fc4c7),
+           TOBN(0x835a2aea, 0x60fa9dda), TOBN(0xf117f5ad, 0x7445cb87)}},
+         {{TOBN(0xae8317f4, 0xb0166f7a), TOBN(0xfbd3e3f7, 0xceec74e6),
+           TOBN(0xfdb516ac, 0xe0874bfd), TOBN(0x3d846019, 0xc681f3a3)},
+          {TOBN(0x0b12ee5c, 0x7c1620b0), TOBN(0xba68b4dd, 0x2b63c501),
+           TOBN(0xac03cd32, 0x6668c51e), TOBN(0x2a6279f7, 0x4e0bcb5b)}},
+         {{TOBN(0x17bd69b0, 0x6ae85c10), TOBN(0x72946979, 0x1dfdd3a6),
+           TOBN(0xd9a03268, 0x2c078bec), TOBN(0x41c6a658, 0xbfd68a52)},
+          {TOBN(0xcdea1024, 0x0e023900), TOBN(0xbaeec121, 0xb10d144d),
+           TOBN(0x5a600e74, 0x058ab8dc), TOBN(0x1333af21, 0xbb89ccdd)}},
+         {{TOBN(0xdf25eae0, 0x3aaba1f1), TOBN(0x2cada16e, 0x3b7144cf),
+           TOBN(0x657ee27d, 0x71ab98bc), TOBN(0x99088b4c, 0x7a6fc96e)},
+          {TOBN(0x05d5c0a0, 0x3549dbd4), TOBN(0x42cbdf8f, 0xf158c3ac),
+           TOBN(0x3fb6b3b0, 0x87edd685), TOBN(0x22071cf6, 0x86f064d0)}},
+         {{TOBN(0xd2d6721f, 0xff2811e5), TOBN(0xdb81b703, 0xfe7fae8c),
+           TOBN(0x3cfb74ef, 0xd3f1f7bb), TOBN(0x0cdbcd76, 0x16cdeb5d)},
+          {TOBN(0x4f39642a, 0x566a808c), TOBN(0x02b74454, 0x340064d6),
+           TOBN(0xfabbadca, 0x0528fa6f), TOBN(0xe4c3074c, 0xd3fc0bb6)}},
+         {{TOBN(0xb32cb8b0, 0xb796d219), TOBN(0xc3e95f4f, 0x34741dd9),
+           TOBN(0x87212125, 0x68edf6f5), TOBN(0x7a03aee4, 0xa2b9cb8e)},
+          {TOBN(0x0cd3c376, 0xf53a89aa), TOBN(0x0d8af9b1, 0x948a28dc),
+           TOBN(0xcf86a3f4, 0x902ab04f), TOBN(0x8aacb62a, 0x7f42002d)}},
+         {{TOBN(0x106985eb, 0xf62ffd52), TOBN(0xe670b54e, 0x5797bf10),
+           TOBN(0x4b405209, 0xc5e30aef), TOBN(0x12c97a20, 0x4365b5e9)},
+          {TOBN(0x104646ce, 0x1fe32093), TOBN(0x13cb4ff6, 0x3907a8c9),
+           TOBN(0x8b9f30d1, 0xd46e726b), TOBN(0xe1985e21, 0xaba0f499)}},
+         {{TOBN(0xc573dea9, 0x10a230cd), TOBN(0x24f46a93, 0xcd30f947),
+           TOBN(0xf2623fcf, 0xabe2010a), TOBN(0x3f278cb2, 0x73f00e4f)},
+          {TOBN(0xed55c67d, 0x50b920eb), TOBN(0xf1cb9a2d, 0x8e760571),
+           TOBN(0x7c50d109, 0x0895b709), TOBN(0x4207cf07, 0x190d4369)}},
+         {{TOBN(0x3b027e81, 0xc4127fe1), TOBN(0xa9f8b9ad, 0x3ae9c566),
+           TOBN(0x5ab10851, 0xacbfbba5), TOBN(0xa747d648, 0x569556f5)},
+          {TOBN(0xcc172b5c, 0x2ba97bf7), TOBN(0x15e0f77d, 0xbcfa3324),
+           TOBN(0xa345b797, 0x7686279d), TOBN(0x5a723480, 0xe38003d3)}},
+         {{TOBN(0xfd8e139f, 0x8f5fcda8), TOBN(0xf3e558c4, 0xbdee5bfd),
+           TOBN(0xd76cbaf4, 0xe33f9f77), TOBN(0x3a4c97a4, 0x71771969)},
+          {TOBN(0xda27e84b, 0xf6dce6a7), TOBN(0xff373d96, 0x13e6c2d1),
+           TOBN(0xf115193c, 0xd759a6e9), TOBN(0x3f9b7025, 0x63d2262c)}},
+         {{TOBN(0xd9764a31, 0x317cd062), TOBN(0x30779d8e, 0x199f8332),
+           TOBN(0xd8074106, 0x16b11b0b), TOBN(0x7917ab9f, 0x78aeaed8)},
+          {TOBN(0xb67a9cbe, 0x28fb1d8e), TOBN(0x2e313563, 0x136eda33),
+           TOBN(0x010b7069, 0xa371a86c), TOBN(0x44d90fa2, 0x6744e6b7)}},
+         {{TOBN(0x68190867, 0xd6b3e243), TOBN(0x9fe6cd9d, 0x59048c48),
+           TOBN(0xb900b028, 0x95731538), TOBN(0xa012062f, 0x32cae04f)},
+          {TOBN(0x8107c8bc, 0x9399d082), TOBN(0x47e8c54a, 0x41df12e2),
+           TOBN(0x14ba5117, 0xb6ef3f73), TOBN(0x22260bea, 0x81362f0b)}},
+         {{TOBN(0x90ea261e, 0x1a18cc20), TOBN(0x2192999f, 0x2321d636),
+           TOBN(0xef64d314, 0xe311b6a0), TOBN(0xd7401e4c, 0x3b54a1f5)},
+          {TOBN(0x19019983, 0x6fbca2ba), TOBN(0x46ad3293, 0x8fbffc4b),
+           TOBN(0xa142d3f6, 0x3786bf40), TOBN(0xeb5cbc26, 0xb67039fc)}},
+         {{TOBN(0x9cb0ae6c, 0x252bd479), TOBN(0x05e0f88a, 0x12b5848f),
+           TOBN(0x78f6d2b2, 0xa5c97663), TOBN(0x6f6e149b, 0xc162225c)},
+          {TOBN(0xe602235c, 0xde601a89), TOBN(0xd17bbe98, 0xf373be1f),
+           TOBN(0xcaf49a5b, 0xa8471827), TOBN(0x7e1a0a85, 0x18aaa116)}},
+         {{TOBN(0x6c833196, 0x270580c3), TOBN(0x1e233839, 0xf1c98a14),
+           TOBN(0x67b2f7b4, 0xae34e0a5), TOBN(0x47ac8745, 0xd8ce7289)},
+          {TOBN(0x2b74779a, 0x100dd467), TOBN(0x274a4337, 0x4ee50d09),
+           TOBN(0x603dcf13, 0x83608bc9), TOBN(0xcd9da6c3, 0xc89e8388)}},
+         {{TOBN(0x2660199f, 0x355116ac), TOBN(0xcc38bb59, 0xb6d18eed),
+           TOBN(0x3075f31f, 0x2f4bc071), TOBN(0x9774457f, 0x265dc57e)},
+          {TOBN(0x06a6a9c8, 0xc6db88bb), TOBN(0x6429d07f, 0x4ec98e04),
+           TOBN(0x8d05e57b, 0x05ecaa8b), TOBN(0x20f140b1, 0x7872ea7b)}},
+         {{TOBN(0xdf8c0f09, 0xca494693), TOBN(0x48d3a020, 0xf252e909),
+           TOBN(0x4c5c29af, 0x57b14b12), TOBN(0x7e6fa37d, 0xbf47ad1c)},
+          {TOBN(0x66e7b506, 0x49a0c938), TOBN(0xb72c0d48, 0x6be5f41f),
+           TOBN(0x6a6242b8, 0xb2359412), TOBN(0xcd35c774, 0x8e859480)}},
+         {{TOBN(0x12536fea, 0x87baa627), TOBN(0x58c1fec1, 0xf72aa680),
+           TOBN(0x6c29b637, 0x601e5dc9), TOBN(0x9e3c3c1c, 0xde9e01b9)},
+          {TOBN(0xefc8127b, 0x2bcfe0b0), TOBN(0x35107102, 0x2a12f50d),
+           TOBN(0x6ccd6cb1, 0x4879b397), TOBN(0xf792f804, 0xf8a82f21)}},
+         {{TOBN(0x509d4804, 0xa9b46402), TOBN(0xedddf85d, 0xc10f0850),
+           TOBN(0x928410dc, 0x4b6208aa), TOBN(0xf6229c46, 0x391012dc)},
+          {TOBN(0xc5a7c41e, 0x7727b9b6), TOBN(0x289e4e4b, 0xaa444842),
+           TOBN(0x049ba1d9, 0xe9a947ea), TOBN(0x44f9e47f, 0x83c8debc)}},
+         {{TOBN(0xfa77a1fe, 0x611f8b8e), TOBN(0xfd2e416a, 0xf518f427),
+           TOBN(0xc5fffa70, 0x114ebac3), TOBN(0xfe57c4e9, 0x5d89697b)},
+          {TOBN(0xfdd053ac, 0xb1aaf613), TOBN(0x31df210f, 0xea585a45),
+           TOBN(0x318cc10e, 0x24985034), TOBN(0x1a38efd1, 0x5f1d6130)}},
+         {{TOBN(0xbf86f237, 0x0b1e9e21), TOBN(0xb258514d, 0x1dbe88aa),
+           TOBN(0x1e38a588, 0x90c1baf9), TOBN(0x2936a01e, 0xbdb9b692)},
+          {TOBN(0xd576de98, 0x6dd5b20c), TOBN(0xb586bf71, 0x70f98ecf),
+           TOBN(0xcccf0f12, 0xc42d2fd7), TOBN(0x8717e61c, 0xfb35bd7b)}},
+         {{TOBN(0x8b1e5722, 0x35e6fc06), TOBN(0x3477728f, 0x0b3e13d5),
+           TOBN(0x150c294d, 0xaa8a7372), TOBN(0xc0291d43, 0x3bfa528a)},
+          {TOBN(0xc6c8bc67, 0xcec5a196), TOBN(0xdeeb31e4, 0x5c2e8a7c),
+           TOBN(0xba93e244, 0xfb6e1c51), TOBN(0xb9f8b71b, 0x2e28e156)}},
+         {{TOBN(0xce65a287, 0x968a2ab9), TOBN(0xe3c5ce69, 0x46bbcb1f),
+           TOBN(0xf8c835b9, 0xe7ae3f30), TOBN(0x16bbee26, 0xff72b82b)},
+          {TOBN(0x665e2017, 0xfd42cd22), TOBN(0x1e139970, 0xf8b1d2a0),
+           TOBN(0x125cda29, 0x79204932), TOBN(0x7aee94a5, 0x49c3bee5)}},
+         {{TOBN(0x68c70160, 0x89821a66), TOBN(0xf7c37678, 0x8f981669),
+           TOBN(0xd90829fc, 0x48cc3645), TOBN(0x346af049, 0xd70addfc)},
+          {TOBN(0x2057b232, 0x370bf29c), TOBN(0xf90c73ce, 0x42e650ee),
+           TOBN(0xe03386ea, 0xa126ab90), TOBN(0x0e266e7e, 0x975a087b)}},
+         {{TOBN(0x80578eb9, 0x0fca65d9), TOBN(0x7e2989ea, 0x16af45b8),
+           TOBN(0x7438212d, 0xcac75a4e), TOBN(0x38c7ca39, 0x4fef36b8)},
+          {TOBN(0x8650c494, 0xd402676a), TOBN(0x26ab5a66, 0xf72c7c48),
+           TOBN(0x4e6cb426, 0xce3a464e), TOBN(0xf8f99896, 0x2b72f841)}},
+         {{TOBN(0x8c318491, 0x1a335cc8), TOBN(0x563459ba, 0x6a5913e4),
+           TOBN(0x1b920d61, 0xc7b32919), TOBN(0x805ab8b6, 0xa02425ad)},
+          {TOBN(0x2ac512da, 0x8d006086), TOBN(0x6ca4846a, 0xbcf5c0fd),
+           TOBN(0xafea51d8, 0xac2138d7), TOBN(0xcb647545, 0x344cd443)}},
+         {{TOBN(0x0429ee8f, 0xbd7d9040), TOBN(0xee66a2de, 0x819b9c96),
+           TOBN(0x54f9ec25, 0xdea7d744), TOBN(0x2ffea642, 0x671721bb)},
+          {TOBN(0x4f19dbd1, 0x114344ea), TOBN(0x04304536, 0xfd0dbc8b),
+           TOBN(0x014b50aa, 0x29ec7f91), TOBN(0xb5fc22fe, 0xbb06014d)}},
+         {{TOBN(0x60d963a9, 0x1ee682e0), TOBN(0xdf48abc0, 0xfe85c727),
+           TOBN(0x0cadba13, 0x2e707c2d), TOBN(0xde608d3a, 0xa645aeff)},
+          {TOBN(0x05f1c28b, 0xedafd883), TOBN(0x3c362ede, 0xbd94de1f),
+           TOBN(0x8dd0629d, 0x13593e41), TOBN(0x0a5e736f, 0x766d6eaf)}},
+         {{TOBN(0xbfa92311, 0xf68cf9d1), TOBN(0xa4f9ef87, 0xc1797556),
+           TOBN(0x10d75a1f, 0x5601c209), TOBN(0x651c374c, 0x09b07361)},
+          {TOBN(0x49950b58, 0x88b5cead), TOBN(0x0ef00058, 0x6fa9dbaa),
+           TOBN(0xf51ddc26, 0x4e15f33a), TOBN(0x1f8b5ca6, 0x2ef46140)}},
+         {{TOBN(0x343ac0a3, 0xee9523f0), TOBN(0xbb75eab2, 0x975ea978),
+           TOBN(0x1bccf332, 0x107387f4), TOBN(0x790f9259, 0x9ab0062e)},
+          {TOBN(0xf1a363ad, 0x1e4f6a5f), TOBN(0x06e08b84, 0x62519a50),
+           TOBN(0x60915187, 0x7265f1ee), TOBN(0x6a80ca34, 0x93ae985e)}},
+         {{TOBN(0x81b29768, 0xaaba4864), TOBN(0xb13cabf2, 0x8d52a7d6),
+           TOBN(0xb5c36348, 0x8ead03f1), TOBN(0xc932ad95, 0x81c7c1c0)},
+          {TOBN(0x5452708e, 0xcae1e27b), TOBN(0x9dac4269, 0x1b0df648),
+           TOBN(0x233e3f0c, 0xdfcdb8bc), TOBN(0xe6ceccdf, 0xec540174)}},
+         {{TOBN(0xbd0d845e, 0x95081181), TOBN(0xcc8a7920, 0x699355d5),
+           TOBN(0x111c0f6d, 0xc3b375a8), TOBN(0xfd95bc6b, 0xfd51e0dc)},
+          {TOBN(0x4a106a26, 0x6888523a), TOBN(0x4d142bd6, 0xcb01a06d),
+           TOBN(0x79bfd289, 0xadb9b397), TOBN(0x0bdbfb94, 0xe9863914)}},
+         {{TOBN(0x29d8a229, 0x1660f6a6), TOBN(0x7f6abcd6, 0x551c042d),
+           TOBN(0x13039deb, 0x0ac3ffe8), TOBN(0xa01be628, 0xec8523fb)},
+          {TOBN(0x6ea34103, 0x0ca1c328), TOBN(0xc74114bd, 0xb903928e),
+           TOBN(0x8aa4ff4e, 0x9e9144b0), TOBN(0x7064091f, 0x7f9a4b17)}},
+         {{TOBN(0xa3f4f521, 0xe447f2c4), TOBN(0x81b8da7a, 0x604291f0),
+           TOBN(0xd680bc46, 0x7d5926de), TOBN(0x84f21fd5, 0x34a1202f)},
+          {TOBN(0x1d1e3181, 0x4e9df3d8), TOBN(0x1ca4861a, 0x39ab8d34),
+           TOBN(0x809ddeec, 0x5b19aa4a), TOBN(0x59f72f7e, 0x4d329366)}},
+         {{TOBN(0xa2f93f41, 0x386d5087), TOBN(0x40bf739c, 0xdd67d64f),
+           TOBN(0xb4494205, 0x66702158), TOBN(0xc33c65be, 0x73b1e178)},
+          {TOBN(0xcdcd657c, 0x38ca6153), TOBN(0x97f4519a, 0xdc791976),
+           TOBN(0xcc7c7f29, 0xcd6e1f39), TOBN(0x38de9cfb, 0x7e3c3932)}},
+         {{TOBN(0xe448eba3, 0x7b793f85), TOBN(0xe9f8dbf9, 0xf067e914),
+           TOBN(0xc0390266, 0xf114ae87), TOBN(0x39ed75a7, 0xcd6a8e2a)},
+          {TOBN(0xadb14848, 0x7ffba390), TOBN(0x67f8cb8b, 0x6af9bc09),
+           TOBN(0x322c3848, 0x9c7476db), TOBN(0xa320fecf, 0x52a538d6)}},
+         {{TOBN(0xe0493002, 0xb2aced2b), TOBN(0xdfba1809, 0x616bd430),
+           TOBN(0x531c4644, 0xc331be70), TOBN(0xbc04d32e, 0x90d2e450)},
+          {TOBN(0x1805a0d1, 0x0f9f142d), TOBN(0x2c44a0c5, 0x47ee5a23),
+           TOBN(0x31875a43, 0x3989b4e3), TOBN(0x6b1949fd, 0x0c063481)}},
+         {{TOBN(0x2dfb9e08, 0xbe0f4492), TOBN(0x3ff0da03, 0xe9d5e517),
+           TOBN(0x03dbe9a1, 0xf79466a8), TOBN(0x0b87bcd0, 0x15ea9932)},
+          {TOBN(0xeb64fc83, 0xab1f58ab), TOBN(0x6d9598da, 0x817edc8a),
+           TOBN(0x699cff66, 0x1d3b67e5), TOBN(0x645c0f29, 0x92635853)}},
+         {{TOBN(0x253cdd82, 0xeabaf21c), TOBN(0x82b9602a, 0x2241659e),
+           TOBN(0x2cae07ec, 0x2d9f7091), TOBN(0xbe4c720c, 0x8b48cd9b)},
+          {TOBN(0x6ce5bc03, 0x6f08d6c9), TOBN(0x36e8a997, 0xaf10bf40),
+           TOBN(0x83422d21, 0x3e10ff12), TOBN(0x7b26d3eb, 0xbcc12494)}},
+         {{TOBN(0xb240d2d0, 0xc9469ad6), TOBN(0xc4a11b4d, 0x30afa05b),
+           TOBN(0x4b604ace, 0xdd6ba286), TOBN(0x18486600, 0x3ee2864c)},
+          {TOBN(0x5869d6ba, 0x8d9ce5be), TOBN(0x0d8f68c5, 0xff4bfb0d),
+           TOBN(0xb69f210b, 0x5700cf73), TOBN(0x61f6653a, 0x6d37c135)}},
+         {{TOBN(0xff3d432b, 0x5aff5a48), TOBN(0x0d81c4b9, 0x72ba3a69),
+           TOBN(0xee879ae9, 0xfa1899ef), TOBN(0xbac7e2a0, 0x2d6acafd)},
+          {TOBN(0xd6d93f6c, 0x1c664399), TOBN(0x4c288de1, 0x5bcb135d),
+           TOBN(0x83031dab, 0x9dab7cbf), TOBN(0xfe23feb0, 0x3abbf5f0)}},
+         {{TOBN(0x9f1b2466, 0xcdedca85), TOBN(0x140bb710, 0x1a09538c),
+           TOBN(0xac8ae851, 0x5e11115d), TOBN(0x0d63ff67, 0x6f03f59e)},
+          {TOBN(0x755e5551, 0x7d234afb), TOBN(0x61c2db4e, 0x7e208fc1),
+           TOBN(0xaa9859ce, 0xf28a4b5d), TOBN(0xbdd6d4fc, 0x34af030f)}},
+         {{TOBN(0xd1c4a26d, 0x3be01cb1), TOBN(0x9ba14ffc, 0x243aa07c),
+           TOBN(0xf95cd3a9, 0xb2503502), TOBN(0xe379bc06, 0x7d2a93ab)},
+          {TOBN(0x3efc18e9, 0xd4ca8d68), TOBN(0x083558ec, 0x80bb412a),
+           TOBN(0xd903b940, 0x9645a968), TOBN(0xa499f0b6, 0x9ba6054f)}},
+         {{TOBN(0x208b573c, 0xb8349abe), TOBN(0x3baab3e5, 0x30b4fc1c),
+           TOBN(0x87e978ba, 0xcb524990), TOBN(0x3524194e, 0xccdf0e80)},
+          {TOBN(0x62711725, 0x7d4bcc42), TOBN(0xe90a3d9b, 0xb90109ba),
+           TOBN(0x3b1bdd57, 0x1323e1e0), TOBN(0xb78e9bd5, 0x5eae1599)}},
+         {{TOBN(0x0794b746, 0x9e03d278), TOBN(0x80178605, 0xd70e6297),
+           TOBN(0x171792f8, 0x99c97855), TOBN(0x11b393ee, 0xf5a86b5c)},
+          {TOBN(0x48ef6582, 0xd8884f27), TOBN(0xbd44737a, 0xbf19ba5f),
+           TOBN(0x8698de4c, 0xa42062c6), TOBN(0x8975eb80, 0x61ce9c54)}},
+         {{TOBN(0xd50e57c7, 0xd7fe71f3), TOBN(0x15342190, 0xbc97ce38),
+           TOBN(0x51bda2de, 0x4df07b63), TOBN(0xba12aeae, 0x200eb87d)},
+          {TOBN(0xabe135d2, 0xa9b4f8f6), TOBN(0x04619d65, 0xfad6d99c),
+           TOBN(0x4a6683a7, 0x7994937c), TOBN(0x7a778c8b, 0x6f94f09a)}},
+         {{TOBN(0x8c508623, 0x20a71b89), TOBN(0x241a2aed, 0x1c229165),
+           TOBN(0x352be595, 0xaaf83a99), TOBN(0x9fbfee7f, 0x1562bac8)},
+          {TOBN(0xeaf658b9, 0x5c4017e3), TOBN(0x1dc7f9e0, 0x15120b86),
+           TOBN(0xd84f13dd, 0x4c034d6f), TOBN(0x283dd737, 0xeaea3038)}},
+         {{TOBN(0x197f2609, 0xcd85d6a2), TOBN(0x6ebbc345, 0xfae60177),
+           TOBN(0xb80f031b, 0x4e12fede), TOBN(0xde55d0c2, 0x07a2186b)},
+          {TOBN(0x1fb3e37f, 0x24dcdd5a), TOBN(0x8d602da5, 0x7ed191fb),
+           TOBN(0x108fb056, 0x76023e0d), TOBN(0x70178c71, 0x459c20c0)}},
+         {{TOBN(0xfad5a386, 0x3fe54cf0), TOBN(0xa4a3ec4f, 0x02bbb475),
+           TOBN(0x1aa5ec20, 0x919d94d7), TOBN(0x5d3b63b5, 0xa81e4ab3)},
+          {TOBN(0x7fa733d8, 0x5ad3d2af), TOBN(0xfbc586dd, 0xd1ac7a37),
+           TOBN(0x282925de, 0x40779614), TOBN(0xfe0ffffb, 0xe74a242a)}},
+         {{TOBN(0x3f39e67f, 0x906151e5), TOBN(0xcea27f5f, 0x55e10649),
+           TOBN(0xdca1d4e1, 0xc17cf7b7), TOBN(0x0c326d12, 0x2fe2362d)},
+          {TOBN(0x05f7ac33, 0x7dd35df3), TOBN(0x0c3b7639, 0xc396dbdf),
+           TOBN(0x0912f5ac, 0x03b7db1c), TOBN(0x9dea4b70, 0x5c9ed4a9)}},
+         {{TOBN(0x475e6e53, 0xaae3f639), TOBN(0xfaba0e7c, 0xfc278bac),
+           TOBN(0x16f9e221, 0x9490375f), TOBN(0xaebf9746, 0xa5a7ed0a)},
+          {TOBN(0x45f9af3f, 0xf41ad5d6), TOBN(0x03c4623c, 0xb2e99224),
+           TOBN(0x82c5bb5c, 0xb3cf56aa), TOBN(0x64311819, 0x34567ed3)}},
+         {{TOBN(0xec57f211, 0x8be489ac), TOBN(0x2821895d, 0xb9a1104b),
+           TOBN(0x610dc875, 0x6064e007), TOBN(0x8e526f3f, 0x5b20d0fe)},
+          {TOBN(0x6e71ca77, 0x5b645aee), TOBN(0x3d1dcb9f, 0x800e10ff),
+           TOBN(0x36b51162, 0x189cf6de), TOBN(0x2c5a3e30, 0x6bb17353)}},
+         {{TOBN(0xc186cd3e, 0x2a6c6fbf), TOBN(0xa74516fa, 0x4bf97906),
+           TOBN(0x5b4b8f4b, 0x279d6901), TOBN(0x0c4e57b4, 0x2b573743)},
+          {TOBN(0x75fdb229, 0xb6e386b6), TOBN(0xb46793fd, 0x99deac27),
+           TOBN(0xeeec47ea, 0xcf712629), TOBN(0xe965f3c4, 0xcbc3b2dd)}},
+         {{TOBN(0x8dd1fb83, 0x425c6559), TOBN(0x7fc00ee6, 0x0af06fda),
+           TOBN(0xe98c9225, 0x33d956df), TOBN(0x0f1ef335, 0x4fbdc8a2)},
+          {TOBN(0x2abb5145, 0xb79b8ea2), TOBN(0x40fd2945, 0xbdbff288),
+           TOBN(0x6a814ac4, 0xd7185db7), TOBN(0xc4329d6f, 0xc084609a)}},
+         {{TOBN(0xc9ba7b52, 0xed1be45d), TOBN(0x891dd20d, 0xe4cd2c74),
+           TOBN(0x5a4d4a7f, 0x824139b1), TOBN(0x66c17716, 0xb873c710)},
+          {TOBN(0x5e5bc141, 0x2843c4e0), TOBN(0xd5ac4817, 0xb97eb5bf),
+           TOBN(0xc0f8af54, 0x450c95c7), TOBN(0xc91b3fa0, 0x318406c5)}},
+         {{TOBN(0x360c340a, 0xab9d97f8), TOBN(0xfb57bd07, 0x90a2d611),
+           TOBN(0x4339ae3c, 0xa6a6f7e5), TOBN(0x9c1fcd2a, 0x2feb8a10)},
+          {TOBN(0x972bcca9, 0xc7ea7432), TOBN(0x1b0b924c, 0x308076f6),
+           TOBN(0x80b2814a, 0x2a5b4ca5), TOBN(0x2f78f55b, 0x61ef3b29)}},
+         {{TOBN(0xf838744a, 0xc18a414f), TOBN(0xc611eaae, 0x903d0a86),
+           TOBN(0x94dabc16, 0x2a453f55), TOBN(0xe6f2e3da, 0x14efb279)},
+          {TOBN(0x5b7a6017, 0x9320dc3c), TOBN(0x692e382f, 0x8df6b5a4),
+           TOBN(0x3f5e15e0, 0x2d40fa90), TOBN(0xc87883ae, 0x643dd318)}},
+         {{TOBN(0x511053e4, 0x53544774), TOBN(0x834d0ecc, 0x3adba2bc),
+           TOBN(0x4215d7f7, 0xbae371f5), TOBN(0xfcfd57bf, 0x6c8663bc)},
+          {TOBN(0xded2383d, 0xd6901b1d), TOBN(0x3b49fbb4, 0xb5587dc3),
+           TOBN(0xfd44a08d, 0x07625f62), TOBN(0x3ee4d65b, 0x9de9b762)}}},
+        {{{TOBN(0x64e5137d, 0x0d63d1fa), TOBN(0x658fc052, 0x02a9d89f),
+           TOBN(0x48894874, 0x50436309), TOBN(0xe9ae30f8, 0xd598da61)},
+          {TOBN(0x2ed710d1, 0x818baf91), TOBN(0xe27e9e06, 0x8b6a0c20),
+           TOBN(0x1e28dcfb, 0x1c1a6b44), TOBN(0x883acb64, 0xd6ac57dc)}},
+         {{TOBN(0x8735728d, 0xc2c6ff70), TOBN(0x79d6122f, 0xc5dc2235),
+           TOBN(0x23f5d003, 0x19e277f9), TOBN(0x7ee84e25, 0xdded8cc7)},
+          {TOBN(0x91a8afb0, 0x63cd880a), TOBN(0x3f3ea7c6, 0x3574af60),
+           TOBN(0x0cfcdc84, 0x02de7f42), TOBN(0x62d0792f, 0xb31aa152)}},
+         {{TOBN(0x8e1b4e43, 0x8a5807ce), TOBN(0xad283893, 0xe4109a7e),
+           TOBN(0xc30cc9cb, 0xafd59dda), TOBN(0xf65f36c6, 0x3d8d8093)},
+          {TOBN(0xdf31469e, 0xa60d32b2), TOBN(0xee93df4b, 0x3e8191c8),
+           TOBN(0x9c1017c5, 0x355bdeb5), TOBN(0xd2623185, 0x8616aa28)}},
+         {{TOBN(0xb02c83f9, 0xdec31a21), TOBN(0x988c8b23, 0x6ad9d573),
+           TOBN(0x53e983ae, 0xa57be365), TOBN(0xe968734d, 0x646f834e)},
+          {TOBN(0x9137ea8f, 0x5da6309b), TOBN(0x10f3a624, 0xc1f1ce16),
+           TOBN(0x782a9ea2, 0xca440921), TOBN(0xdf94739e, 0x5b46f1b5)}},
+         {{TOBN(0x9f9be006, 0xcce85c9b), TOBN(0x360e70d6, 0xa4c7c2d3),
+           TOBN(0x2cd5beea, 0xaefa1e60), TOBN(0x64cf63c0, 0x8c3d2b6d)},
+          {TOBN(0xfb107fa3, 0xe1cf6f90), TOBN(0xb7e937c6, 0xd5e044e6),
+           TOBN(0x74e8ca78, 0xce34db9f), TOBN(0x4f8b36c1, 0x3e210bd0)}},
+         {{TOBN(0x1df165a4, 0x34a35ea8), TOBN(0x3418e0f7, 0x4d4412f6),
+           TOBN(0x5af1f8af, 0x518836c3), TOBN(0x42ceef4d, 0x130e1965)},
+          {TOBN(0x5560ca0b, 0x543a1957), TOBN(0xc33761e5, 0x886cb123),
+           TOBN(0x66624b1f, 0xfe98ed30), TOBN(0xf772f4bf, 0x1090997d)}},
+         {{TOBN(0xf4e540bb, 0x4885d410), TOBN(0x7287f810, 0x9ba5f8d7),
+           TOBN(0x22d0d865, 0xde98dfb1), TOBN(0x49ff51a1, 0xbcfbb8a3)},
+          {TOBN(0xb6b6fa53, 0x6bc3012e), TOBN(0x3d31fd72, 0x170d541d),
+           TOBN(0x8018724f, 0x4b0f4966), TOBN(0x79e7399f, 0x87dbde07)}},
+         {{TOBN(0x56f8410e, 0xf4f8b16a), TOBN(0x97241afe, 0xc47b266a),
+           TOBN(0x0a406b8e, 0x6d9c87c1), TOBN(0x803f3e02, 0xcd42ab1b)},
+          {TOBN(0x7f0309a8, 0x04dbec69), TOBN(0xa83b85f7, 0x3bbad05f),
+           TOBN(0xc6097273, 0xad8e197f), TOBN(0xc097440e, 0x5067adc1)}},
+         {{TOBN(0x730eafb6, 0x3524ff16), TOBN(0xd7f9b51e, 0x823fc6ce),
+           TOBN(0x27bd0d32, 0x443e4ac0), TOBN(0x40c59ad9, 0x4d66f217)},
+          {TOBN(0x6c33136f, 0x17c387a4), TOBN(0x5043b8d5, 0xeb86804d),
+           TOBN(0x74970312, 0x675a73c9), TOBN(0x838fdb31, 0xf16669b6)}},
+         {{TOBN(0xc507b6dd, 0x418e7ddd), TOBN(0x39888d93, 0x472f19d6),
+           TOBN(0x7eae26be, 0x0c27eb4d), TOBN(0x17b53ed3, 0xfbabb884)},
+          {TOBN(0xfc27021b, 0x2b01ae4f), TOBN(0x88462e87, 0xcf488682),
+           TOBN(0xbee096ec, 0x215e2d87), TOBN(0xeb2fea9a, 0xd242e29b)}},
+         {{TOBN(0x5d985b5f, 0xb821fc28), TOBN(0x89d2e197, 0xdc1e2ad2),
+           TOBN(0x55b566b8, 0x9030ba62), TOBN(0xe3fd41b5, 0x4f41b1c6)},
+          {TOBN(0xb738ac2e, 0xb9a96d61), TOBN(0x7f8567ca, 0x369443f4),
+           TOBN(0x8698622d, 0xf803a440), TOBN(0x2b586236, 0x8fe2f4dc)}},
+         {{TOBN(0xbbcc00c7, 0x56b95bce), TOBN(0x5ec03906, 0x616da680),
+           TOBN(0x79162ee6, 0x72214252), TOBN(0x43132b63, 0x86a892d2)},
+          {TOBN(0x4bdd3ff2, 0x2f3263bf), TOBN(0xd5b3733c, 0x9cd0a142),
+           TOBN(0x592eaa82, 0x44415ccb), TOBN(0x663e8924, 0x8d5474ea)}},
+         {{TOBN(0x8058a25e, 0x5236344e), TOBN(0x82e8df9d, 0xbda76ee6),
+           TOBN(0xdcf6efd8, 0x11cc3d22), TOBN(0x00089cda, 0x3b4ab529)},
+          {TOBN(0x91d3a071, 0xbd38a3db), TOBN(0x4ea97fc0, 0xef72b925),
+           TOBN(0x0c9fc15b, 0xea3edf75), TOBN(0x5a6297cd, 0xa4348ed3)}},
+         {{TOBN(0x0d38ab35, 0xce7c42d4), TOBN(0x9fd493ef, 0x82feab10),
+           TOBN(0x46056b6d, 0x82111b45), TOBN(0xda11dae1, 0x73efc5c3)},
+          {TOBN(0xdc740278, 0x5545a7fb), TOBN(0xbdb2601c, 0x40d507e6),
+           TOBN(0x121dfeeb, 0x7066fa58), TOBN(0x214369a8, 0x39ae8c2a)}},
+         {{TOBN(0x195709cb, 0x06e0956c), TOBN(0x4c9d254f, 0x010cd34b),
+           TOBN(0xf51e13f7, 0x0471a532), TOBN(0xe19d6791, 0x1e73054d)},
+          {TOBN(0xf702a628, 0xdb5c7be3), TOBN(0xc7141218, 0xb24dde05),
+           TOBN(0xdc18233c, 0xf29b2e2e), TOBN(0x3a6bd1e8, 0x85342dba)}},
+         {{TOBN(0x3f747fa0, 0xb311898c), TOBN(0xe2a272e4, 0xcd0eac65),
+           TOBN(0x4bba5851, 0xf914d0bc), TOBN(0x7a1a9660, 0xc4a43ee3)},
+          {TOBN(0xe5a367ce, 0xa1c8cde9), TOBN(0x9d958ba9, 0x7271abe3),
+           TOBN(0xf3ff7eb6, 0x3d1615cd), TOBN(0xa2280dce, 0xf5ae20b0)}},
+         {{TOBN(0x56dba5c1, 0xcf640147), TOBN(0xea5a2e3d, 0x5e83d118),
+           TOBN(0x04cd6b6d, 0xda24c511), TOBN(0x1c0f4671, 0xe854d214)},
+          {TOBN(0x91a6b7a9, 0x69565381), TOBN(0xdc966240, 0xdecf1f5b),
+           TOBN(0x1b22d21c, 0xfcf5d009), TOBN(0x2a05f641, 0x9021dbd5)}},
+         {{TOBN(0x8c0ed566, 0xd4312483), TOBN(0x5179a95d, 0x643e216f),
+           TOBN(0xcc185fec, 0x17044493), TOBN(0xb3063339, 0x54991a21)},
+          {TOBN(0xd801ecdb, 0x0081a726), TOBN(0x0149b0c6, 0x4fa89bbb),
+           TOBN(0xafe9065a, 0x4391b6b9), TOBN(0xedc92786, 0xd633f3a3)}},
+         {{TOBN(0xe408c24a, 0xae6a8e13), TOBN(0x85833fde, 0x9f3897ab),
+           TOBN(0x43800e7e, 0xd81a0715), TOBN(0xde08e346, 0xb44ffc5f)},
+          {TOBN(0x7094184c, 0xcdeff2e0), TOBN(0x49f9387b, 0x165eaed1),
+           TOBN(0x635d6129, 0x777c468a), TOBN(0x8c0dcfd1, 0x538c2dd8)}},
+         {{TOBN(0xd6d9d9e3, 0x7a6a308b), TOBN(0x62375830, 0x4c2767d3),
+           TOBN(0x874a8bc6, 0xf38cbeb6), TOBN(0xd94d3f1a, 0xccb6fd9e)},
+          {TOBN(0x92a9735b, 0xba21f248), TOBN(0x272ad0e5, 0x6cd1efb0),
+           TOBN(0x7437b69c, 0x05b03284), TOBN(0xe7f04702, 0x6948c225)}},
+         {{TOBN(0x8a56c04a, 0xcba2ecec), TOBN(0x0c181270, 0xe3a73e41),
+           TOBN(0x6cb34e9d, 0x03e93725), TOBN(0xf77c8713, 0x496521a9)},
+          {TOBN(0x94569183, 0xfa7f9f90), TOBN(0xf2e7aa4c, 0x8c9707ad),
+           TOBN(0xced2c9ba, 0x26c1c9a3), TOBN(0x9109fe96, 0x40197507)}},
+         {{TOBN(0x9ae868a9, 0xe9adfe1c), TOBN(0x3984403d, 0x314e39bb),
+           TOBN(0xb5875720, 0xf2fe378f), TOBN(0x33f901e0, 0xba44a628)},
+          {TOBN(0xea1125fe, 0x3652438c), TOBN(0xae9ec4e6, 0x9dd1f20b),
+           TOBN(0x1e740d9e, 0xbebf7fbd), TOBN(0x6dbd3ddc, 0x42dbe79c)}},
+         {{TOBN(0x62082aec, 0xedd36776), TOBN(0xf612c478, 0xe9859039),
+           TOBN(0xa493b201, 0x032f7065), TOBN(0xebd4d8f2, 0x4ff9b211)},
+          {TOBN(0x3f23a0aa, 0xaac4cb32), TOBN(0xea3aadb7, 0x15ed4005),
+           TOBN(0xacf17ea4, 0xafa27e63), TOBN(0x56125c1a, 0xc11fd66c)}},
+         {{TOBN(0x266344a4, 0x3794f8dc), TOBN(0xdcca923a, 0x483c5c36),
+           TOBN(0x2d6b6bbf, 0x3f9d10a0), TOBN(0xb320c5ca, 0x81d9bdf3)},
+          {TOBN(0x620e28ff, 0x47b50a95), TOBN(0x933e3b01, 0xcef03371),
+           TOBN(0xf081bf85, 0x99100153), TOBN(0x183be9a0, 0xc3a8c8d6)}},
+         {{TOBN(0x4e3ddc5a, 0xd6bbe24d), TOBN(0xc6c74630, 0x53843795),
+           TOBN(0x78193dd7, 0x65ec2d4c), TOBN(0xb8df26cc, 0xcd3c89b2)},
+          {TOBN(0x98dbe399, 0x5a483f8d), TOBN(0x72d8a957, 0x7dd3313a),
+           TOBN(0x65087294, 0xab0bd375), TOBN(0xfcd89248, 0x7c259d16)}},
+         {{TOBN(0x8a9443d7, 0x7613aa81), TOBN(0x80100800, 0x85fe6584),
+           TOBN(0x70fc4dbc, 0x7fb10288), TOBN(0xf58280d3, 0xe86beee8)},
+          {TOBN(0x14fdd82f, 0x7c978c38), TOBN(0xdf1204c1, 0x0de44d7b),
+           TOBN(0xa08a1c84, 0x4160252f), TOBN(0x591554ca, 0xc17646a5)}},
+         {{TOBN(0x214a37d6, 0xa05bd525), TOBN(0x48d5f09b, 0x07957b3c),
+           TOBN(0x0247cdcb, 0xd7109bc9), TOBN(0x40f9e4bb, 0x30599ce7)},
+          {TOBN(0xc325fa03, 0xf46ad2ec), TOBN(0x00f766cf, 0xc3e3f9ee),
+           TOBN(0xab556668, 0xd43a4577), TOBN(0x68d30a61, 0x3ee03b93)}},
+         {{TOBN(0x7ddc81ea, 0x77b46a08), TOBN(0xcf5a6477, 0xc7480699),
+           TOBN(0x43a8cb34, 0x6633f683), TOBN(0x1b867e6b, 0x92363c60)},
+          {TOBN(0x43921114, 0x1f60558e), TOBN(0xcdbcdd63, 0x2f41450e),
+           TOBN(0x7fc04601, 0xcc630e8b), TOBN(0xea7c66d5, 0x97038b43)}},
+         {{TOBN(0x7259b8a5, 0x04e99fd8), TOBN(0x98a8dd12, 0x4785549a),
+           TOBN(0x0e459a7c, 0x840552e1), TOBN(0xcdfcf4d0, 0x4bb0909e)},
+          {TOBN(0x34a86db2, 0x53758da7), TOBN(0xe643bb83, 0xeac997e1),
+           TOBN(0x96400bd7, 0x530c5b7e), TOBN(0x9f97af87, 0xb41c8b52)}},
+         {{TOBN(0x34fc8820, 0xfbeee3f9), TOBN(0x93e53490, 0x49091afd),
+           TOBN(0x764b9be5, 0x9a31f35c), TOBN(0x71f37864, 0x57e3d924)},
+          {TOBN(0x02fb34e0, 0x943aa75e), TOBN(0xa18c9c58, 0xab8ff6e4),
+           TOBN(0x080f31b1, 0x33cf0d19), TOBN(0x5c9682db, 0x083518a7)}},
+         {{TOBN(0x873d4ca6, 0xb709c3de), TOBN(0x64a84262, 0x3575b8f0),
+           TOBN(0x6275da1f, 0x020154bb), TOBN(0x97678caa, 0xd17cf1ab)},
+          {TOBN(0x8779795f, 0x951a95c3), TOBN(0xdd35b163, 0x50fccc08),
+           TOBN(0x32709627, 0x33d8f031), TOBN(0x3c5ab10a, 0x498dd85c)}},
+         {{TOBN(0xb6c185c3, 0x41dca566), TOBN(0x7de7feda, 0xd8622aa3),
+           TOBN(0x99e84d92, 0x901b6dfb), TOBN(0x30a02b0e, 0x7c4ad288)},
+          {TOBN(0xc7c81daa, 0x2fd3cf36), TOBN(0xd1319547, 0xdf89e59f),
+           TOBN(0xb2be8184, 0xcd496733), TOBN(0xd5f449eb, 0x93d3412b)}},
+         {{TOBN(0x7ea41b1b, 0x25fe531d), TOBN(0xf9797432, 0x6a1d5646),
+           TOBN(0x86067f72, 0x2bde501a), TOBN(0xf91481c0, 0x0c85e89c)},
+          {TOBN(0xca8ee465, 0xf8b05bc6), TOBN(0x1844e1cf, 0x02e83cda),
+           TOBN(0xca82114a, 0xb4dbe33b), TOBN(0x0f9f8769, 0x4eabfde2)}},
+         {{TOBN(0x4936b1c0, 0x38b27fe2), TOBN(0x63b6359b, 0xaba402df),
+           TOBN(0x40c0ea2f, 0x656bdbab), TOBN(0x9c992a89, 0x6580c39c)},
+          {TOBN(0x600e8f15, 0x2a60aed1), TOBN(0xeb089ca4, 0xe0bf49df),
+           TOBN(0x9c233d7d, 0x2d42d99a), TOBN(0x648d3f95, 0x4c6bc2fa)}},
+         {{TOBN(0xdcc383a8, 0xe1add3f3), TOBN(0xf42c0c6a, 0x4f64a348),
+           TOBN(0x2abd176f, 0x0030dbdb), TOBN(0x4de501a3, 0x7d6c215e)},
+          {TOBN(0x4a107c1f, 0x4b9a64bc), TOBN(0xa77f0ad3, 0x2496cd59),
+           TOBN(0xfb78ac62, 0x7688dffb), TOBN(0x7025a2ca, 0x67937d8e)}},
+         {{TOBN(0xfde8b2d1, 0xd1a8f4e7), TOBN(0xf5b3da47, 0x7354927c),
+           TOBN(0xe48606a3, 0xd9205735), TOBN(0xac477cc6, 0xe177b917)},
+          {TOBN(0xfb1f73d2, 0xa883239a), TOBN(0xe12572f6, 0xcc8b8357),
+           TOBN(0x9d355e9c, 0xfb1f4f86), TOBN(0x89b795f8, 0xd9f3ec6e)}},
+         {{TOBN(0x27be56f1, 0xb54398dc), TOBN(0x1890efd7, 0x3fedeed5),
+           TOBN(0x62f77f1f, 0x9c6d0140), TOBN(0x7ef0e314, 0x596f0ee4)},
+          {TOBN(0x50ca6631, 0xcc61dab3), TOBN(0x4a39801d, 0xf4866e4f),
+           TOBN(0x66c8d032, 0xae363b39), TOBN(0x22c591e5, 0x2ead66aa)}},
+         {{TOBN(0x954ba308, 0xde02a53e), TOBN(0x2a6c060f, 0xd389f357),
+           TOBN(0xe6cfcde8, 0xfbf40b66), TOBN(0x8e02fc56, 0xc6340ce1)},
+          {TOBN(0xe4957795, 0x73adb4ba), TOBN(0x7b86122c, 0xa7b03805),
+           TOBN(0x63f83512, 0x0c8e6fa6), TOBN(0x83660ea0, 0x057d7804)}},
+         {{TOBN(0xbad79105, 0x21ba473c), TOBN(0xb6c50bee, 0xded5389d),
+           TOBN(0xee2caf4d, 0xaa7c9bc0), TOBN(0xd97b8de4, 0x8c4e98a7)},
+          {TOBN(0xa9f63e70, 0xab3bbddb), TOBN(0x3898aabf, 0x2597815a),
+           TOBN(0x7659af89, 0xac15b3d9), TOBN(0xedf7725b, 0x703ce784)}},
+         {{TOBN(0x25470fab, 0xe085116b), TOBN(0x04a43375, 0x87285310),
+           TOBN(0x4e39187e, 0xe2bfd52f), TOBN(0x36166b44, 0x7d9ebc74)},
+          {TOBN(0x92ad433c, 0xfd4b322c), TOBN(0x726aa817, 0xba79ab51),
+           TOBN(0xf96eacd8, 0xc1db15eb), TOBN(0xfaf71e91, 0x0476be63)}},
+         {{TOBN(0xdd69a640, 0x641fad98), TOBN(0xb7995918, 0x29622559),
+           TOBN(0x03c6daa5, 0xde4199dc), TOBN(0x92cadc97, 0xad545eb4)},
+          {TOBN(0x1028238b, 0x256534e4), TOBN(0x73e80ce6, 0x8595409a),
+           TOBN(0x690d4c66, 0xd05dc59b), TOBN(0xc95f7b8f, 0x981dee80)}},
+         {{TOBN(0xf4337014, 0xd856ac25), TOBN(0x441bd9dd, 0xac524dca),
+           TOBN(0x640b3d85, 0x5f0499f5), TOBN(0x39cf84a9, 0xd5fda182)},
+          {TOBN(0x04e7b055, 0xb2aa95a0), TOBN(0x29e33f0a, 0x0ddf1860),
+           TOBN(0x082e74b5, 0x423f6b43), TOBN(0x217edeb9, 0x0aaa2b0f)}},
+         {{TOBN(0x58b83f35, 0x83cbea55), TOBN(0xc485ee4d, 0xbc185d70),
+           TOBN(0x833ff03b, 0x1e5f6992), TOBN(0xb5b9b9cc, 0xcf0c0dd5)},
+          {TOBN(0x7caaee8e, 0x4e9e8a50), TOBN(0x462e907b, 0x6269dafd),
+           TOBN(0x6ed5cee9, 0xfbe791c6), TOBN(0x68ca3259, 0xed430790)}},
+         {{TOBN(0x2b72bdf2, 0x13b5ba88), TOBN(0x60294c8a, 0x35ef0ac4),
+           TOBN(0x9c3230ed, 0x19b99b08), TOBN(0x560fff17, 0x6c2589aa)},
+          {TOBN(0x552b8487, 0xd6770374), TOBN(0xa373202d, 0x9a56f685),
+           TOBN(0xd3e7f907, 0x45f175d9), TOBN(0x3c2f315f, 0xd080d810)}},
+         {{TOBN(0x1130e9dd, 0x7b9520e8), TOBN(0xc078f9e2, 0x0af037b5),
+           TOBN(0x38cd2ec7, 0x1e9c104c), TOBN(0x0f684368, 0xc472fe92)},
+          {TOBN(0xd3f1b5ed, 0x6247e7ef), TOBN(0xb32d33a9, 0x396dfe21),
+           TOBN(0x46f59cf4, 0x4a9aa2c2), TOBN(0x69cd5168, 0xff0f7e41)}},
+         {{TOBN(0x3f59da0f, 0x4b3234da), TOBN(0xcf0b0235, 0xb4579ebe),
+           TOBN(0x6d1cbb25, 0x6d2476c7), TOBN(0x4f0837e6, 0x9dc30f08)},
+          {TOBN(0x9a4075bb, 0x906f6e98), TOBN(0x253bb434, 0xc761e7d1),
+           TOBN(0xde2e645f, 0x6e73af10), TOBN(0xb89a4060, 0x0c5f131c)}},
+         {{TOBN(0xd12840c5, 0xb8cc037f), TOBN(0x3d093a5b, 0x7405bb47),
+           TOBN(0x6202c253, 0x206348b8), TOBN(0xbf5d57fc, 0xc55a3ca7)},
+          {TOBN(0x89f6c90c, 0x8c3bef48), TOBN(0x23ac7623, 0x5a0a960a),
+           TOBN(0xdfbd3d6b, 0x552b42ab), TOBN(0x3ef22458, 0x132061f6)}},
+         {{TOBN(0xd74e9bda, 0xc97e6516), TOBN(0x88779360, 0xc230f49e),
+           TOBN(0xa6ec1de3, 0x1e74ea49), TOBN(0x581dcee5, 0x3fb645a2)},
+          {TOBN(0xbaef2391, 0x8f483f14), TOBN(0x6d2dddfc, 0xd137d13b),
+           TOBN(0x54cde50e, 0xd2743a42), TOBN(0x89a34fc5, 0xe4d97e67)}},
+         {{TOBN(0x13f1f5b3, 0x12e08ce5), TOBN(0xa80540b8, 0xa7f0b2ca),
+           TOBN(0x854bcf77, 0x01982805), TOBN(0xb8653ffd, 0x233bea04)},
+          {TOBN(0x8e7b8787, 0x02b0b4c9), TOBN(0x2675261f, 0x9acb170a),
+           TOBN(0x061a9d90, 0x930c14e5), TOBN(0xb59b30e0, 0xdef0abea)}},
+         {{TOBN(0x1dc19ea6, 0x0200ec7d), TOBN(0xb6f4a3f9, 0x0bce132b),
+           TOBN(0xb8d5de90, 0xf13e27e0), TOBN(0xbaee5ef0, 0x1fade16f)},
+          {TOBN(0x6f406aaa, 0xe4c6cf38), TOBN(0xab4cfe06, 0xd1369815),
+           TOBN(0x0dcffe87, 0xefd550c6), TOBN(0x9d4f59c7, 0x75ff7d39)}},
+         {{TOBN(0xb02553b1, 0x51deb6ad), TOBN(0x812399a4, 0xb1877749),
+           TOBN(0xce90f71f, 0xca6006e1), TOBN(0xc32363a6, 0xb02b6e77)},
+          {TOBN(0x02284fbe, 0xdc36c64d), TOBN(0x86c81e31, 0xa7e1ae61),
+           TOBN(0x2576c7e5, 0xb909d94a), TOBN(0x8b6f7d02, 0x818b2bb0)}},
+         {{TOBN(0xeca3ed07, 0x56faa38a), TOBN(0xa3790e6c, 0x9305bb54),
+           TOBN(0xd784eeda, 0x7bc73061), TOBN(0xbd56d369, 0x6dd50614)},
+          {TOBN(0xd6575949, 0x229a8aa9), TOBN(0xdcca8f47, 0x4595ec28),
+           TOBN(0x814305c1, 0x06ab4fe6), TOBN(0xc8c39768, 0x24f43f16)}},
+         {{TOBN(0xe2a45f36, 0x523f2b36), TOBN(0x995c6493, 0x920d93bb),
+           TOBN(0xf8afdab7, 0x90f1632b), TOBN(0x79ebbecd, 0x1c295954)},
+          {TOBN(0xc7bb3ddb, 0x79592f48), TOBN(0x67216a7b, 0x5f88e998),
+           TOBN(0xd91f098b, 0xbc01193e), TOBN(0xf7d928a5, 0xb1db83fc)}},
+         {{TOBN(0x55e38417, 0xe991f600), TOBN(0x2a91113e, 0x2981a934),
+           TOBN(0xcbc9d648, 0x06b13bde), TOBN(0xb011b6ac, 0x0755ff44)},
+          {TOBN(0x6f4cb518, 0x045ec613), TOBN(0x522d2d31, 0xc2f5930a),
+           TOBN(0x5acae1af, 0x382e65de), TOBN(0x57643067, 0x27bc966f)}},
+         {{TOBN(0x5e12705d, 0x1c7193f0), TOBN(0xf0f32f47, 0x3be8858e),
+           TOBN(0x785c3d7d, 0x96c6dfc7), TOBN(0xd75b4a20, 0xbf31795d)},
+          {TOBN(0x91acf17b, 0x342659d4), TOBN(0xe596ea34, 0x44f0378f),
+           TOBN(0x4515708f, 0xce52129d), TOBN(0x17387e1e, 0x79f2f585)}},
+         {{TOBN(0x72cfd2e9, 0x49dee168), TOBN(0x1ae05223, 0x3e2af239),
+           TOBN(0x009e75be, 0x1d94066a), TOBN(0x6cca31c7, 0x38abf413)},
+          {TOBN(0xb50bd61d, 0x9bc49908), TOBN(0x4a9b4a8c, 0xf5e2bc1e),
+           TOBN(0xeb6cc5f7, 0x946f83ac), TOBN(0x27da93fc, 0xebffab28)}},
+         {{TOBN(0xea314c96, 0x4821c8c5), TOBN(0x8de49ded, 0xa83c15f4),
+           TOBN(0x7a64cf20, 0x7af33004), TOBN(0x45f1bfeb, 0xc9627e10)},
+          {TOBN(0x878b0626, 0x54b9df60), TOBN(0x5e4fdc3c, 0xa95c0b33),
+           TOBN(0xe54a37ca, 0xc2035d8e), TOBN(0x9087cda9, 0x80f20b8c)}},
+         {{TOBN(0x36f61c23, 0x8319ade4), TOBN(0x766f287a, 0xde8cfdf8),
+           TOBN(0x48821948, 0x346f3705), TOBN(0x49a7b853, 0x16e4f4a2)},
+          {TOBN(0xb9b3f8a7, 0x5cedadfd), TOBN(0x8f562815, 0x8db2a815),
+           TOBN(0xc0b7d554, 0x01f68f95), TOBN(0x12971e27, 0x688a208e)}},
+         {{TOBN(0xc9f8b696, 0xd0ff34fc), TOBN(0x20824de2, 0x1222718c),
+           TOBN(0x7213cf9f, 0x0c95284d), TOBN(0xe2ad741b, 0xdc158240)},
+          {TOBN(0x0ee3a6df, 0x54043ccf), TOBN(0x16ff479b, 0xd84412b3),
+           TOBN(0xf6c74ee0, 0xdfc98af0), TOBN(0xa78a169f, 0x52fcd2fb)}},
+         {{TOBN(0xd8ae8746, 0x99c930e9), TOBN(0x1d33e858, 0x49e117a5),
+           TOBN(0x7581fcb4, 0x6624759f), TOBN(0xde50644f, 0x5bedc01d)},
+          {TOBN(0xbeec5d00, 0xcaf3155e), TOBN(0x672d66ac, 0xbc73e75f),
+           TOBN(0x86b9d8c6, 0x270b01db), TOBN(0xd249ef83, 0x50f55b79)}},
+         {{TOBN(0x6131d6d4, 0x73978fe3), TOBN(0xcc4e4542, 0x754b00a1),
+           TOBN(0x4e05df05, 0x57dfcfe9), TOBN(0x94b29cdd, 0x51ef6bf0)},
+          {TOBN(0xe4530cff, 0x9bc7edf2), TOBN(0x8ac236fd, 0xd3da65f3),
+           TOBN(0x0faf7d5f, 0xc8eb0b48), TOBN(0x4d2de14c, 0x660eb039)}},
+         {{TOBN(0xc006bba7, 0x60430e54), TOBN(0x10a2d0d6, 0xda3289ab),
+           TOBN(0x9c037a5d, 0xd7979c59), TOBN(0x04d1f3d3, 0xa116d944)},
+          {TOBN(0x9ff22473, 0x8a0983cd), TOBN(0x28e25b38, 0xc883cabb),
+           TOBN(0xe968dba5, 0x47a58995), TOBN(0x2c80b505, 0x774eebdf)}},
+         {{TOBN(0xee763b71, 0x4a953beb), TOBN(0x502e223f, 0x1642e7f6),
+           TOBN(0x6fe4b641, 0x61d5e722), TOBN(0x9d37c5b0, 0xdbef5316)},
+          {TOBN(0x0115ed70, 0xf8330bc7), TOBN(0x139850e6, 0x75a72789),
+           TOBN(0x27d7faec, 0xffceccc2), TOBN(0x3016a860, 0x4fd9f7f6)}},
+         {{TOBN(0xc492ec64, 0x4cd8f64c), TOBN(0x58a2d790, 0x279d7b51),
+           TOBN(0x0ced1fc5, 0x1fc75256), TOBN(0x3e658aed, 0x8f433017)},
+          {TOBN(0x0b61942e, 0x05da59eb), TOBN(0xba3d60a3, 0x0ddc3722),
+           TOBN(0x7c311cd1, 0x742e7f87), TOBN(0x6473ffee, 0xf6b01b6e)}}},
+        {{{TOBN(0x8303604f, 0x692ac542), TOBN(0xf079ffe1, 0x227b91d3),
+           TOBN(0x19f63e63, 0x15aaf9bd), TOBN(0xf99ee565, 0xf1f344fb)},
+          {TOBN(0x8a1d661f, 0xd6219199), TOBN(0x8c883bc6, 0xd48ce41c),
+           TOBN(0x1065118f, 0x3c74d904), TOBN(0x713889ee, 0x0faf8b1b)}},
+         {{TOBN(0x972b3f8f, 0x81a1b3be), TOBN(0x4f3ce145, 0xce2764a0),
+           TOBN(0xe2d0f1cc, 0x28c4f5f7), TOBN(0xdeee0c0d, 0xc7f3985b)},
+          {TOBN(0x7df4adc0, 0xd39e25c3), TOBN(0x40619820, 0xc467a080),
+           TOBN(0x440ebc93, 0x61cf5a58), TOBN(0x527729a6, 0x422ad600)}},
+         {{TOBN(0xca6c0937, 0xb1b76ba6), TOBN(0x1a2eab85, 0x4d2026dc),
+           TOBN(0xb1715e15, 0x19d9ae0a), TOBN(0xf1ad9199, 0xbac4a026)},
+          {TOBN(0x35b3dfb8, 0x07ea7b0e), TOBN(0xedf5496f, 0x3ed9eb89),
+           TOBN(0x8932e5ff, 0x2d6d08ab), TOBN(0xf314874e, 0x25bd2731)}},
+         {{TOBN(0xefb26a75, 0x3f73f449), TOBN(0x1d1c94f8, 0x8d44fc79),
+           TOBN(0x49f0fbc5, 0x3bc0dc4d), TOBN(0xb747ea0b, 0x3698a0d0)},
+          {TOBN(0x5218c3fe, 0x228d291e), TOBN(0x35b804b5, 0x43c129d6),
+           TOBN(0xfac859b8, 0xd1acc516), TOBN(0x6c10697d, 0x95d6e668)}},
+         {{TOBN(0xc38e438f, 0x0876fd4e), TOBN(0x45f0c307, 0x83d2f383),
+           TOBN(0x203cc2ec, 0xb10934cb), TOBN(0x6a8f2439, 0x2c9d46ee)},
+          {TOBN(0xf16b431b, 0x65ccde7b), TOBN(0x41e2cd18, 0x27e76a6f),
+           TOBN(0xb9c8cf8f, 0x4e3484d7), TOBN(0x64426efd, 0x8315244a)}},
+         {{TOBN(0x1c0a8e44, 0xfc94dea3), TOBN(0x34c8cdbf, 0xdad6a0b0),
+           TOBN(0x919c3840, 0x04113cef), TOBN(0xfd32fba4, 0x15490ffa)},
+          {TOBN(0x58d190f6, 0x795dcfb7), TOBN(0xfef01b03, 0x83588baf),
+           TOBN(0x9e6d1d63, 0xca1fc1c0), TOBN(0x53173f96, 0xf0a41ac9)}},
+         {{TOBN(0x2b1d402a, 0xba16f73b), TOBN(0x2fb31014, 0x8cf9b9fc),
+           TOBN(0x2d51e60e, 0x446ef7bf), TOBN(0xc731021b, 0xb91e1745)},
+          {TOBN(0x9d3b4724, 0x4fee99d4), TOBN(0x4bca48b6, 0xfac5c1ea),
+           TOBN(0x70f5f514, 0xbbea9af7), TOBN(0x751f55a5, 0x974c283a)}},
+         {{TOBN(0x6e30251a, 0xcb452fdb), TOBN(0x31ee6965, 0x50f30650),
+           TOBN(0xb0b3e508, 0x933548d9), TOBN(0xb8949a4f, 0xf4b0ef5b)},
+          {TOBN(0x208b8326, 0x3c88f3bd), TOBN(0xab147c30, 0xdb1d9989),
+           TOBN(0xed6515fd, 0x44d4df03), TOBN(0x17a12f75, 0xe72eb0c5)}},
+         {{TOBN(0x3b59796d, 0x36cf69db), TOBN(0x1219eee9, 0x56670c18),
+           TOBN(0xfe3341f7, 0x7a070d8e), TOBN(0x9b70130b, 0xa327f90c)},
+          {TOBN(0x36a32462, 0x0ae18e0e), TOBN(0x2021a623, 0x46c0a638),
+           TOBN(0x251b5817, 0xc62eb0d4), TOBN(0x87bfbcdf, 0x4c762293)}},
+         {{TOBN(0xf78ab505, 0xcdd61d64), TOBN(0x8c7a53fc, 0xc8c18857),
+           TOBN(0xa653ce6f, 0x16147515), TOBN(0x9c923aa5, 0xea7d52d5)},
+          {TOBN(0xc24709cb, 0x5c18871f), TOBN(0x7d53bec8, 0x73b3cc74),
+           TOBN(0x59264aff, 0xfdd1d4c4), TOBN(0x5555917e, 0x240da582)}},
+         {{TOBN(0xcae8bbda, 0x548f5a0e), TOBN(0x1910eaba, 0x3bbfbbe1),
+           TOBN(0xae579685, 0x7677afc3), TOBN(0x49ea61f1, 0x73ff0b5c)},
+          {TOBN(0x78655478, 0x4f7c3922), TOBN(0x95d337cd, 0x20c68eef),
+           TOBN(0x68f1e1e5, 0xdf779ab9), TOBN(0x14b491b0, 0xb5cf69a8)}},
+         {{TOBN(0x7a6cbbe0, 0x28e3fe89), TOBN(0xe7e1fee4, 0xc5aac0eb),
+           TOBN(0x7f47eda5, 0x697e5140), TOBN(0x4f450137, 0xb454921f)},
+          {TOBN(0xdb625f84, 0x95cd8185), TOBN(0x74be0ba1, 0xcdb2e583),
+           TOBN(0xaee4fd7c, 0xdd5e6de4), TOBN(0x4251437d, 0xe8101739)}},
+         {{TOBN(0x686d72a0, 0xac620366), TOBN(0x4be3fb9c, 0xb6d59344),
+           TOBN(0x6e8b44e7, 0xa1eb75b9), TOBN(0x84e39da3, 0x91a5c10c)},
+          {TOBN(0x37cc1490, 0xb38f0409), TOBN(0x02951943, 0x2c2ade82),
+           TOBN(0x9b688783, 0x1190a2d8), TOBN(0x25627d14, 0x231182ba)}},
+         {{TOBN(0x6eb550aa, 0x658a6d87), TOBN(0x1405aaa7, 0xcf9c7325),
+           TOBN(0xd147142e, 0x5c8748c9), TOBN(0x7f637e4f, 0x53ede0e0)},
+          {TOBN(0xf8ca2776, 0x14ffad2c), TOBN(0xe58fb1bd, 0xbafb6791),
+           TOBN(0x17158c23, 0xbf8f93fc), TOBN(0x7f15b373, 0x0a4a4655)}},
+         {{TOBN(0x39d4add2, 0xd842ca72), TOBN(0xa71e4391, 0x3ed96305),
+           TOBN(0x5bb09cbe, 0x6700be14), TOBN(0x68d69d54, 0xd8befcf6)},
+          {TOBN(0xa45f5367, 0x37183bcf), TOBN(0x7152b7bb, 0x3370dff7),
+           TOBN(0xcf887baa, 0xbf12525b), TOBN(0xe7ac7bdd, 0xd6d1e3cd)}},
+         {{TOBN(0x25914f78, 0x81fdad90), TOBN(0xcf638f56, 0x0d2cf6ab),
+           TOBN(0xb90bc03f, 0xcc054de5), TOBN(0x932811a7, 0x18b06350)},
+          {TOBN(0x2f00b330, 0x9bbd11ff), TOBN(0x76108a6f, 0xb4044974),
+           TOBN(0x801bb9e0, 0xa851d266), TOBN(0x0dd099be, 0xbf8990c1)}},
+         {{TOBN(0x58c5aaaa, 0xabe32986), TOBN(0x0fe9dd2a, 0x50d59c27),
+           TOBN(0x84951ff4, 0x8d307305), TOBN(0x6c23f829, 0x86529b78)},
+          {TOBN(0x50bb2218, 0x0b136a79), TOBN(0x7e2174de, 0x77a20996),
+           TOBN(0x6f00a4b9, 0xc0bb4da6), TOBN(0x89a25a17, 0xefdde8da)}},
+         {{TOBN(0xf728a27e, 0xc11ee01d), TOBN(0xf900553a, 0xe5f10dfb),
+           TOBN(0x189a83c8, 0x02ec893c), TOBN(0x3ca5bdc1, 0x23f66d77)},
+          {TOBN(0x98781537, 0x97eada9f), TOBN(0x59c50ab3, 0x10256230),
+           TOBN(0x346042d9, 0x323c69b3), TOBN(0x1b715a6d, 0x2c460449)}},
+         {{TOBN(0xa41dd476, 0x6ae06e0b), TOBN(0xcdd7888e, 0x9d42e25f),
+           TOBN(0x0f395f74, 0x56b25a20), TOBN(0xeadfe0ae, 0x8700e27e)},
+          {TOBN(0xb09d52a9, 0x69950093), TOBN(0x3525d9cb, 0x327f8d40),
+           TOBN(0xb8235a94, 0x67df886a), TOBN(0x77e4b0dd, 0x035faec2)}},
+         {{TOBN(0x115eb20a, 0x517d7061), TOBN(0x77fe3433, 0x6c2df683),
+           TOBN(0x6870ddc7, 0xcdc6fc67), TOBN(0xb1610588, 0x0b87de83)},
+          {TOBN(0x343584ca, 0xd9c4ddbe), TOBN(0xb3164f1c, 0x3d754be2),
+           TOBN(0x0731ed3a, 0xc1e6c894), TOBN(0x26327dec, 0x4f6b904c)}},
+         {{TOBN(0x9d49c6de, 0x97b5cd32), TOBN(0x40835dae, 0xb5eceecd),
+           TOBN(0xc66350ed, 0xd9ded7fe), TOBN(0x8aeebb5c, 0x7a678804)},
+          {TOBN(0x51d42fb7, 0x5b8ee9ec), TOBN(0xd7a17bdd, 0x8e3ca118),
+           TOBN(0x40d7511a, 0x2ef4400e), TOBN(0xc48990ac, 0x875a66f4)}},
+         {{TOBN(0x8de07d2a, 0x2199e347), TOBN(0xbee75556, 0x2a39e051),
+           TOBN(0x56918786, 0x916e51dc), TOBN(0xeb191313, 0x4a2d89ec)},
+          {TOBN(0x6679610d, 0x37d341ed), TOBN(0x434fbb41, 0x56d51c2b),
+           TOBN(0xe54b7ee7, 0xd7492dba), TOBN(0xaa33a79a, 0x59021493)}},
+         {{TOBN(0x49fc5054, 0xe4bd6d3d), TOBN(0x09540f04, 0x5ab551d0),
+           TOBN(0x8acc9085, 0x4942d3a6), TOBN(0x231af02f, 0x2d28323b)},
+          {TOBN(0x93458cac, 0x0992c163), TOBN(0x1fef8e71, 0x888e3bb4),
+           TOBN(0x27578da5, 0xbe8c268c), TOBN(0xcc8be792, 0xe805ec00)}},
+         {{TOBN(0x29267bae, 0xc61c3855), TOBN(0xebff429d, 0x58c1fd3b),
+           TOBN(0x22d886c0, 0x8c0b93b8), TOBN(0xca5e00b2, 0x2ddb8953)},
+          {TOBN(0xcf330117, 0xc3fed8b7), TOBN(0xd49ac6fa, 0x819c01f6),
+           TOBN(0x6ddaa6bd, 0x3c0fbd54), TOBN(0x91743068, 0x8049a2cf)}},
+         {{TOBN(0xd67f981e, 0xaff2ef81), TOBN(0xc3654d35, 0x2818ae80),
+           TOBN(0x81d05044, 0x1b2aa892), TOBN(0x2db067bf, 0x3d099328)},
+          {TOBN(0xe7c79e86, 0x703dcc97), TOBN(0xe66f9b37, 0xe133e215),
+           TOBN(0xcdf119a6, 0xe39a7a5c), TOBN(0x47c60de3, 0x876f1b61)}},
+         {{TOBN(0x6e405939, 0xd860f1b2), TOBN(0x3e9a1dbc, 0xf5ed4d4a),
+           TOBN(0x3f23619e, 0xc9b6bcbd), TOBN(0x5ee790cf, 0x734e4497)},
+          {TOBN(0xf0a834b1, 0x5bdaf9bb), TOBN(0x02cedda7, 0x4ca295f0),
+           TOBN(0x4619aa2b, 0xcb8e378c), TOBN(0xe5613244, 0xcc987ea4)}},
+         {{TOBN(0x0bc022cc, 0x76b23a50), TOBN(0x4a2793ad, 0x0a6c21ce),
+           TOBN(0x38328780, 0x89cac3f5), TOBN(0x29176f1b, 0xcba26d56)},
+          {TOBN(0x06296187, 0x4f6f59eb), TOBN(0x86e9bca9, 0x8bdc658e),
+           TOBN(0x2ca9c4d3, 0x57e30402), TOBN(0x5438b216, 0x516a09bb)}},
+         {{TOBN(0x0a6a063c, 0x7672765a), TOBN(0x37a3ce64, 0x0547b9bf),
+           TOBN(0x42c099c8, 0x98b1a633), TOBN(0xb5ab800d, 0x05ee6961)},
+          {TOBN(0xf1963f59, 0x11a5acd6), TOBN(0xbaee6157, 0x46201063),
+           TOBN(0x36d9a649, 0xa596210a), TOBN(0xaed04363, 0x1ba7138c)}},
+         {{TOBN(0xcf817d1c, 0xa4a82b76), TOBN(0x5586960e, 0xf3806be9),
+           TOBN(0x7ab67c89, 0x09dc6bb5), TOBN(0x52ace7a0, 0x114fe7eb)},
+          {TOBN(0xcd987618, 0xcbbc9b70), TOBN(0x4f06fd5a, 0x604ca5e1),
+           TOBN(0x90af14ca, 0x6dbde133), TOBN(0x1afe4322, 0x948a3264)}},
+         {{TOBN(0xa70d2ca6, 0xc44b2c6c), TOBN(0xab726799, 0x0ef87dfe),
+           TOBN(0x310f64dc, 0x2e696377), TOBN(0x49b42e68, 0x4c8126a0)},
+          {TOBN(0x0ea444c3, 0xcea0b176), TOBN(0x53a8ddf7, 0xcb269182),
+           TOBN(0xf3e674eb, 0xbbba9dcb), TOBN(0x0d2878a8, 0xd8669d33)}},
+         {{TOBN(0x04b935d5, 0xd019b6a3), TOBN(0xbb5cf88e, 0x406f1e46),
+           TOBN(0xa1912d16, 0x5b57c111), TOBN(0x9803fc21, 0x19ebfd78)},
+          {TOBN(0x4f231c9e, 0xc07764a9), TOBN(0xd93286ee, 0xb75bd055),
+           TOBN(0x83a9457d, 0x8ee6c9de), TOBN(0x04695915, 0x6087ec90)}},
+         {{TOBN(0x14c6dd8a, 0x58d6cd46), TOBN(0x9cb633b5, 0x8e6634d2),
+           TOBN(0xc1305047, 0xf81bc328), TOBN(0x12ede0e2, 0x26a177e5)},
+          {TOBN(0x332cca62, 0x065a6f4f), TOBN(0xc3a47ecd, 0x67be487b),
+           TOBN(0x741eb187, 0x0f47ed1c), TOBN(0x99e66e58, 0xe7598b14)}},
+         {{TOBN(0x6f0544ca, 0x63d0ff12), TOBN(0xe5efc784, 0xb610a05f),
+           TOBN(0xf72917b1, 0x7cad7b47), TOBN(0x3ff6ea20, 0xf2cac0c0)},
+          {TOBN(0xcc23791b, 0xf21db8b7), TOBN(0x7dac70b1, 0xd7d93565),
+           TOBN(0x682cda1d, 0x694bdaad), TOBN(0xeb88bb8c, 0x1023516d)}},
+         {{TOBN(0xc4c634b4, 0xdfdbeb1b), TOBN(0x22f5ca72, 0xb4ee4dea),
+           TOBN(0x1045a368, 0xe6524821), TOBN(0xed9e8a3f, 0x052b18b2)},
+          {TOBN(0x9b7f2cb1, 0xb961f49a), TOBN(0x7fee2ec1, 0x7b009670),
+           TOBN(0x350d8754, 0x22507a6d), TOBN(0x561bd711, 0x4db55f1d)}},
+         {{TOBN(0x4c189ccc, 0x320bbcaf), TOBN(0x568434cf, 0xdf1de48c),
+           TOBN(0x6af1b00e, 0x0fa8f128), TOBN(0xf0ba9d02, 0x8907583c)},
+          {TOBN(0x735a4004, 0x32ff9f60), TOBN(0x3dd8e4b6, 0xc25dcf33),
+           TOBN(0xf2230f16, 0x42c74cef), TOBN(0xd8117623, 0x013fa8ad)}},
+         {{TOBN(0x36822876, 0xf51fe76e), TOBN(0x8a6811cc, 0x11d62589),
+           TOBN(0xc3fc7e65, 0x46225718), TOBN(0xb7df2c9f, 0xc82fdbcd)},
+          {TOBN(0x3b1d4e52, 0xdd7b205b), TOBN(0xb6959478, 0x47a2e414),
+           TOBN(0x05e4d793, 0xefa91148), TOBN(0xb47ed446, 0xfd2e9675)}},
+         {{TOBN(0x1a7098b9, 0x04c9d9bf), TOBN(0x661e2881, 0x1b793048),
+           TOBN(0xb1a16966, 0xb01ee461), TOBN(0xbc521308, 0x2954746f)},
+          {TOBN(0xc909a0fc, 0x2477de50), TOBN(0xd80bb41c, 0x7dbd51ef),
+           TOBN(0xa85be7ec, 0x53294905), TOBN(0x6d465b18, 0x83958f97)}},
+         {{TOBN(0x16f6f330, 0xfb6840fd), TOBN(0xfaaeb214, 0x3401e6c8),
+           TOBN(0xaf83d30f, 0xccb5b4f8), TOBN(0x22885739, 0x266dec4b)},
+          {TOBN(0x51b4367c, 0x7bc467df), TOBN(0x926562e3, 0xd842d27a),
+           TOBN(0xdfcb6614, 0x0fea14a6), TOBN(0xeb394dae, 0xf2734cd9)}},
+         {{TOBN(0x3eeae5d2, 0x11c0be98), TOBN(0xb1e6ed11, 0x814e8165),
+           TOBN(0x191086bc, 0xe52bce1c), TOBN(0x14b74cc6, 0xa75a04da)},
+          {TOBN(0x63cf1186, 0x8c060985), TOBN(0x071047de, 0x2dbd7f7c),
+           TOBN(0x4e433b8b, 0xce0942ca), TOBN(0xecbac447, 0xd8fec61d)}},
+         {{TOBN(0x8f0ed0e2, 0xebf3232f), TOBN(0xfff80f9e, 0xc52a2edd),
+           TOBN(0xad9ab433, 0x75b55fdb), TOBN(0x73ca7820, 0xe42e0c11)},
+          {TOBN(0x6dace0a0, 0xe6251b46), TOBN(0x89bc6b5c, 0x4c0d932d),
+           TOBN(0x3438cd77, 0x095da19a), TOBN(0x2f24a939, 0x8d48bdfb)}},
+         {{TOBN(0x99b47e46, 0x766561b7), TOBN(0x736600e6, 0x0ed0322a),
+           TOBN(0x06a47cb1, 0x638e1865), TOBN(0x927c1c2d, 0xcb136000)},
+          {TOBN(0x29542337, 0x0cc5df69), TOBN(0x99b37c02, 0x09d649a9),
+           TOBN(0xc5f0043c, 0x6aefdb27), TOBN(0x6cdd9987, 0x1be95c27)}},
+         {{TOBN(0x69850931, 0x390420d2), TOBN(0x299c40ac, 0x0983efa4),
+           TOBN(0x3a05e778, 0xaf39aead), TOBN(0x84274408, 0x43a45193)},
+          {TOBN(0x6bcd0fb9, 0x91a711a0), TOBN(0x461592c8, 0x9f52ab17),
+           TOBN(0xb49302b4, 0xda3c6ed6), TOBN(0xc51fddc7, 0x330d7067)}},
+         {{TOBN(0x94babeb6, 0xda50d531), TOBN(0x521b840d, 0xa6a7b9da),
+           TOBN(0x5305151e, 0x404bdc89), TOBN(0x1bcde201, 0xd0d07449)},
+          {TOBN(0xf427a78b, 0x3b76a59a), TOBN(0xf84841ce, 0x07791a1b),
+           TOBN(0xebd314be, 0xbf91ed1c), TOBN(0x8e61d34c, 0xbf172943)}},
+         {{TOBN(0x1d5dc451, 0x5541b892), TOBN(0xb186ee41, 0xfc9d9e54),
+           TOBN(0x9d9f345e, 0xd5bf610d), TOBN(0x3e7ba65d, 0xf6acca9f)},
+          {TOBN(0x9dda787a, 0xa8369486), TOBN(0x09f9dab7, 0x8eb5ba53),
+           TOBN(0x5afb2033, 0xd6481bc3), TOBN(0x76f4ce30, 0xafa62104)}},
+         {{TOBN(0xa8fa00cf, 0xf4f066b5), TOBN(0x89ab5143, 0x461dafc2),
+           TOBN(0x44339ed7, 0xa3389998), TOBN(0x2ff862f1, 0xbc214903)},
+          {TOBN(0x2c88f985, 0xb05556e3), TOBN(0xcd96058e, 0x3467081e),
+           TOBN(0x7d6a4176, 0xedc637ea), TOBN(0xe1743d09, 0x36a5acdc)}},
+         {{TOBN(0x66fd72e2, 0x7eb37726), TOBN(0xf7fa264e, 0x1481a037),
+           TOBN(0x9fbd3bde, 0x45f4aa79), TOBN(0xed1e0147, 0x767c3e22)},
+          {TOBN(0x7621f979, 0x82e7abe2), TOBN(0x19eedc72, 0x45f633f8),
+           TOBN(0xe69b155e, 0x6137bf3a), TOBN(0xa0ad13ce, 0x414ee94e)}},
+         {{TOBN(0x93e3d524, 0x1c0e651a), TOBN(0xab1a6e2a, 0x02ce227e),
+           TOBN(0xe7af1797, 0x4ab27eca), TOBN(0x245446de, 0xbd444f39)},
+          {TOBN(0x59e22a21, 0x56c07613), TOBN(0x43deafce, 0xf4275498),
+           TOBN(0x10834ccb, 0x67fd0946), TOBN(0xa75841e5, 0x47406edf)}},
+         {{TOBN(0xebd6a677, 0x7b0ac93d), TOBN(0xa6e37b0d, 0x78f5e0d7),
+           TOBN(0x2516c096, 0x76f5492b), TOBN(0x1e4bf888, 0x9ac05f3a)},
+          {TOBN(0xcdb42ce0, 0x4df0ba2b), TOBN(0x935d5cfd, 0x5062341b),
+           TOBN(0x8a303333, 0x82acac20), TOBN(0x429438c4, 0x5198b00e)}},
+         {{TOBN(0x1d083bc9, 0x049d33fa), TOBN(0x58b82dda, 0x946f67ff),
+           TOBN(0xac3e2db8, 0x67a1d6a3), TOBN(0x62e6bead, 0x1798aac8)},
+          {TOBN(0xfc85980f, 0xde46c58c), TOBN(0xa7f69379, 0x69c8d7be),
+           TOBN(0x23557927, 0x837b35ec), TOBN(0x06a933d8, 0xe0790c0c)}},
+         {{TOBN(0x827c0e9b, 0x077ff55d), TOBN(0x53977798, 0xbb26e680),
+           TOBN(0x59530874, 0x1d9cb54f), TOBN(0xcca3f449, 0x4aac53ef)},
+          {TOBN(0x11dc5c87, 0xa07eda0f), TOBN(0xc138bccf, 0xfd6400c8),
+           TOBN(0x549680d3, 0x13e5da72), TOBN(0xc93eed82, 0x4540617e)}},
+         {{TOBN(0xfd3db157, 0x4d0b75c0), TOBN(0x9716eb42, 0x6386075b),
+           TOBN(0x0639605c, 0x817b2c16), TOBN(0x09915109, 0xf1e4f201)},
+          {TOBN(0x35c9a928, 0x5cca6c3b), TOBN(0xb25f7d1a, 0x3505c900),
+           TOBN(0xeb9f7d20, 0x630480c4), TOBN(0xc3c7b8c6, 0x2a1a501c)}},
+         {{TOBN(0x3f99183c, 0x5a1f8e24), TOBN(0xfdb118fa, 0x9dd255f0),
+           TOBN(0xb9b18b90, 0xc27f62a6), TOBN(0xe8f732f7, 0x396ec191)},
+          {TOBN(0x524a2d91, 0x0be786ab), TOBN(0x5d32adef, 0x0ac5a0f5),
+           TOBN(0x9b53d4d6, 0x9725f694), TOBN(0x032a76c6, 0x0510ba89)}},
+         {{TOBN(0x840391a3, 0xebeb1544), TOBN(0x44b7b88c, 0x3ed73ac3),
+           TOBN(0xd24bae7a, 0x256cb8b3), TOBN(0x7ceb151a, 0xe394cb12)},
+          {TOBN(0xbd6b66d0, 0x5bc1e6a8), TOBN(0xec70cecb, 0x090f07bf),
+           TOBN(0x270644ed, 0x7d937589), TOBN(0xee9e1a3d, 0x5f1dccfe)}},
+         {{TOBN(0xb0d40a84, 0x745b98d2), TOBN(0xda429a21, 0x2556ed40),
+           TOBN(0xf676eced, 0x85148cb9), TOBN(0x5a22d40c, 0xded18936)},
+          {TOBN(0x3bc4b9e5, 0x70e8a4ce), TOBN(0xbfd1445b, 0x9eae0379),
+           TOBN(0xf23f2c0c, 0x1a0bd47e), TOBN(0xa9c0bb31, 0xe1845531)}},
+         {{TOBN(0x9ddc4d60, 0x0a4c3f6b), TOBN(0xbdfaad79, 0x2c15ef44),
+           TOBN(0xce55a236, 0x7f484acc), TOBN(0x08653ca7, 0x055b1f15)},
+          {TOBN(0x2efa8724, 0x538873a3), TOBN(0x09299e5d, 0xace1c7e7),
+           TOBN(0x07afab66, 0xade332ba), TOBN(0x9be1fdf6, 0x92dd71b7)}},
+         {{TOBN(0xa49b5d59, 0x5758b11c), TOBN(0x0b852893, 0xc8654f40),
+           TOBN(0xb63ef6f4, 0x52379447), TOBN(0xd4957d29, 0x105e690c)},
+          {TOBN(0x7d484363, 0x646559b0), TOBN(0xf4a8273c, 0x49788a8e),
+           TOBN(0xee406cb8, 0x34ce54a9), TOBN(0x1e1c260f, 0xf86fda9b)}},
+         {{TOBN(0xe150e228, 0xcf6a4a81), TOBN(0x1fa3b6a3, 0x1b488772),
+           TOBN(0x1e6ff110, 0xc5a9c15b), TOBN(0xc6133b91, 0x8ad6aa47)},
+          {TOBN(0x8ac5d55c, 0x9dffa978), TOBN(0xba1d1c1d, 0x5f3965f2),
+           TOBN(0xf969f4e0, 0x7732b52f), TOBN(0xfceecdb5, 0xa5172a07)}},
+         {{TOBN(0xb0120a5f, 0x10f2b8f5), TOBN(0xc83a6cdf, 0x5c4c2f63),
+           TOBN(0x4d47a491, 0xf8f9c213), TOBN(0xd9e1cce5, 0xd3f1bbd5)},
+          {TOBN(0x0d91bc7c, 0xaba7e372), TOBN(0xfcdc74c8, 0xdfd1a2db),
+           TOBN(0x05efa800, 0x374618e5), TOBN(0x11216969, 0x15a7925e)}},
+         {{TOBN(0xd4c89823, 0xf6021c5d), TOBN(0x880d5e84, 0xeff14423),
+           TOBN(0x6523bc5a, 0x6dcd1396), TOBN(0xd1acfdfc, 0x113c978b)},
+          {TOBN(0xb0c164e8, 0xbbb66840), TOBN(0xf7f4301e, 0x72b58459),
+           TOBN(0xc29ad4a6, 0xa638e8ec), TOBN(0xf5ab8961, 0x46b78699)}},
+         {{TOBN(0x9dbd7974, 0x0e954750), TOBN(0x0121de88, 0x64f9d2c6),
+           TOBN(0x2e597b42, 0xd985232e), TOBN(0x55b6c3c5, 0x53451777)},
+          {TOBN(0xbb53e547, 0x519cb9fb), TOBN(0xf134019f, 0x8428600d),
+           TOBN(0x5a473176, 0xe081791a), TOBN(0x2f3e2263, 0x35fb0c08)}},
+         {{TOBN(0xb28c3017, 0x73d273b0), TOBN(0xccd21076, 0x7721ef9a),
+           TOBN(0x054cc292, 0xb650dc39), TOBN(0x662246de, 0x6188045e)},
+          {TOBN(0x904b52fa, 0x6b83c0d1), TOBN(0xa72df267, 0x97e9cd46),
+           TOBN(0x886b43cd, 0x899725e4), TOBN(0x2b651688, 0xd849ff22)}},
+         {{TOBN(0x60479b79, 0x02f34533), TOBN(0x5e354c14, 0x0c77c148),
+           TOBN(0xb4bb7581, 0xa8537c78), TOBN(0x188043d7, 0xefe1495f)},
+          {TOBN(0x9ba12f42, 0x8c1d5026), TOBN(0x2e0c8a26, 0x93d4aaab),
+           TOBN(0xbdba7b8b, 0xaa57c450), TOBN(0x140c9ad6, 0x9bbdafef)}},
+         {{TOBN(0x2067aa42, 0x25ac0f18), TOBN(0xf7b1295b, 0x04d1fbf3),
+           TOBN(0x14829111, 0xa4b04824), TOBN(0x2ce3f192, 0x33bd5e91)},
+          {TOBN(0x9c7a1d55, 0x8f2e1b72), TOBN(0xfe932286, 0x302aa243),
+           TOBN(0x497ca7b4, 0xd4be9554), TOBN(0xb8e821b8, 0xe0547a6e)}},
+         {{TOBN(0xfb2838be, 0x67e573e0), TOBN(0x05891db9, 0x4084c44b),
+           TOBN(0x91311373, 0x96c1c2c5), TOBN(0x6aebfa3f, 0xd958444b)},
+          {TOBN(0xac9cdce9, 0xe56e55c1), TOBN(0x7148ced3, 0x2caa46d0),
+           TOBN(0x2e10c7ef, 0xb61fe8eb), TOBN(0x9fd835da, 0xff97cf4d)}}},
+        {{{TOBN(0xa36da109, 0x081e9387), TOBN(0xfb9780d7, 0x8c935828),
+           TOBN(0xd5940332, 0xe540b015), TOBN(0xc9d7b51b, 0xe0f466fa)},
+          {TOBN(0xfaadcd41, 0xd6d9f671), TOBN(0xba6c1e28, 0xb1a2ac17),
+           TOBN(0x066a7833, 0xed201e5f), TOBN(0x19d99719, 0xf90f462b)}},
+         {{TOBN(0xf431f462, 0x060b5f61), TOBN(0xa56f46b4, 0x7bd057c2),
+           TOBN(0x348dca6c, 0x47e1bf65), TOBN(0x9a38783e, 0x41bcf1ff)},
+          {TOBN(0x7a5d33a9, 0xda710718), TOBN(0x5a779987, 0x2e0aeaf6),
+           TOBN(0xca87314d, 0x2d29d187), TOBN(0xfa0edc3e, 0xc687d733)}},
+         {{TOBN(0x9df33621, 0x6a31e09b), TOBN(0xde89e44d, 0xc1350e35),
+           TOBN(0x29214871, 0x4ca0cf52), TOBN(0xdf379672, 0x0b88a538)},
+          {TOBN(0xc92a510a, 0x2591d61b), TOBN(0x79aa87d7, 0x585b447b),
+           TOBN(0xf67db604, 0xe5287f77), TOBN(0x1697c8bf, 0x5efe7a80)}},
+         {{TOBN(0x1c894849, 0xcb198ac7), TOBN(0xa884a93d, 0x0f264665),
+           TOBN(0x2da964ef, 0x9b200678), TOBN(0x3c351b87, 0x009834e6)},
+          {TOBN(0xafb2ef9f, 0xe2c4b44b), TOBN(0x580f6c47, 0x3326790c),
+           TOBN(0xb8480521, 0x0b02264a), TOBN(0x8ba6f9e2, 0x42a194e2)}},
+         {{TOBN(0xfc87975f, 0x8fb54738), TOBN(0x35160788, 0x27c3ead3),
+           TOBN(0x834116d2, 0xb74a085a), TOBN(0x53c99a73, 0xa62fe996)},
+          {TOBN(0x87585be0, 0x5b81c51b), TOBN(0x925bafa8, 0xbe0852b7),
+           TOBN(0x76a4fafd, 0xa84d19a7), TOBN(0x39a45982, 0x585206d4)}},
+         {{TOBN(0x499b6ab6, 0x5eb03c0e), TOBN(0xf19b7954, 0x72bc3fde),
+           TOBN(0xa86b5b9c, 0x6e3a80d2), TOBN(0xe4377508, 0x6d42819f)},
+          {TOBN(0xc1663650, 0xbb3ee8a3), TOBN(0x75eb14fc, 0xb132075f),
+           TOBN(0xa8ccc906, 0x7ad834f6), TOBN(0xea6a2474, 0xe6e92ffd)}},
+         {{TOBN(0x9d72fd95, 0x0f8d6758), TOBN(0xcb84e101, 0x408c07dd),
+           TOBN(0xb9114bfd, 0xa5e23221), TOBN(0x358b5fe2, 0xe94e742c)},
+          {TOBN(0x1c0577ec, 0x95f40e75), TOBN(0xf0155451, 0x3d73f3d6),
+           TOBN(0x9d55cd67, 0xbd1b9b66), TOBN(0x63e86e78, 0xaf8d63c7)}},
+         {{TOBN(0x39d934ab, 0xd3c095f1), TOBN(0x04b261be, 0xe4b76d71),
+           TOBN(0x1d2e6970, 0xe73e6984), TOBN(0x879fb23b, 0x5e5fcb11)},
+          {TOBN(0x11506c72, 0xdfd75490), TOBN(0x3a97d085, 0x61bcf1c1),
+           TOBN(0x43201d82, 0xbf5e7007), TOBN(0x7f0ac52f, 0x798232a7)}},
+         {{TOBN(0x2715cbc4, 0x6eb564d4), TOBN(0x8d6c752c, 0x9e570e29),
+           TOBN(0xf80247c8, 0x9ef5fd5d), TOBN(0xc3c66b46, 0xd53eb514)},
+          {TOBN(0x9666b401, 0x0f87de56), TOBN(0xce62c06f, 0xc6c603b5),
+           TOBN(0xae7b4c60, 0x7e4fc942), TOBN(0x38ac0b77, 0x663a9c19)}},
+         {{TOBN(0xcb4d20ee, 0x4b049136), TOBN(0x8b63bf12, 0x356a4613),
+           TOBN(0x1221aef6, 0x70e08128), TOBN(0xe62d8c51, 0x4acb6b16)},
+          {TOBN(0x71f64a67, 0x379e7896), TOBN(0xb25237a2, 0xcafd7fa5),
+           TOBN(0xf077bd98, 0x3841ba6a), TOBN(0xc4ac0244, 0x3cd16e7e)}},
+         {{TOBN(0x548ba869, 0x21fea4ca), TOBN(0xd36d0817, 0xf3dfdac1),
+           TOBN(0x09d8d71f, 0xf4685faf), TOBN(0x8eff66be, 0xc52c459a)},
+          {TOBN(0x182faee7, 0x0b57235e), TOBN(0xee3c39b1, 0x0106712b),
+           TOBN(0x5107331f, 0xc0fcdcb0), TOBN(0x669fb9dc, 0xa51054ba)}},
+         {{TOBN(0xb25101fb, 0x319d7682), TOBN(0xb0293129, 0x0a982fee),
+           TOBN(0x51c1c9b9, 0x0261b344), TOBN(0x0e008c5b, 0xbfd371fa)},
+          {TOBN(0xd866dd1c, 0x0278ca33), TOBN(0x666f76a6, 0xe5aa53b1),
+           TOBN(0xe5cfb779, 0x6013a2cf), TOBN(0x1d3a1aad, 0xa3521836)}},
+         {{TOBN(0xcedd2531, 0x73faa485), TOBN(0xc8ee6c4f, 0xc0a76878),
+           TOBN(0xddbccfc9, 0x2a11667d), TOBN(0x1a418ea9, 0x1c2f695a)},
+          {TOBN(0xdb11bd92, 0x51f73971), TOBN(0x3e4b3c82, 0xda2ed89f),
+           TOBN(0x9a44f3f4, 0xe73e0319), TOBN(0xd1e3de0f, 0x303431af)}},
+         {{TOBN(0x3c5604ff, 0x50f75f9c), TOBN(0x1d8eddf3, 0x7e752b22),
+           TOBN(0x0ef074dd, 0x3c9a1118), TOBN(0xd0ffc172, 0xccb86d7b)},
+          {TOBN(0xabd1ece3, 0x037d90f2), TOBN(0xe3f307d6, 0x6055856c),
+           TOBN(0x422f9328, 0x7e4c6daf), TOBN(0x902aac66, 0x334879a0)}},
+         {{TOBN(0xb6a1e7bf, 0x94cdfade), TOBN(0x6c97e1ed, 0x7fc6d634),
+           TOBN(0x662ad24d, 0xa2fb63f8), TOBN(0xf81be1b9, 0xa5928405)},
+          {TOBN(0x86d765e4, 0xd14b4206), TOBN(0xbecc2e0e, 0x8fa0db65),
+           TOBN(0xa28838e0, 0xb17fc76c), TOBN(0xe49a602a, 0xe37cf24e)}},
+         {{TOBN(0x76b4131a, 0x567193ec), TOBN(0xaf3c305a, 0xe5f6e70b),
+           TOBN(0x9587bd39, 0x031eebdd), TOBN(0x5709def8, 0x71bbe831)},
+          {TOBN(0x57059983, 0x0eb2b669), TOBN(0x4d80ce1b, 0x875b7029),
+           TOBN(0x838a7da8, 0x0364ac16), TOBN(0x2f431d23, 0xbe1c83ab)}},
+         {{TOBN(0xe56812a6, 0xf9294dd3), TOBN(0xb448d01f, 0x9b4b0d77),
+           TOBN(0xf3ae6061, 0x04e8305c), TOBN(0x2bead645, 0x94d8c63e)},
+          {TOBN(0x0a85434d, 0x84fd8b07), TOBN(0x537b983f, 0xf7a9dee5),
+           TOBN(0xedcc5f18, 0xef55bd85), TOBN(0x2041af62, 0x21c6cf8b)}},
+         {{TOBN(0x8e52874c, 0xb940c71e), TOBN(0x211935a9, 0xdb5f4b3a),
+           TOBN(0x94350492, 0x301b1dc3), TOBN(0x33d2646d, 0x29958620)},
+          {TOBN(0x16b0d64b, 0xef911404), TOBN(0x9d1f25ea, 0x9a3c5ef4),
+           TOBN(0x20f200eb, 0x4a352c78), TOBN(0x43929f2c, 0x4bd0b428)}},
+         {{TOBN(0xa5656667, 0xc7196e29), TOBN(0x7992c2f0, 0x9391be48),
+           TOBN(0xaaa97cbd, 0x9ee0cd6e), TOBN(0x51b0310c, 0x3dc8c9bf)},
+          {TOBN(0x237f8acf, 0xdd9f22cb), TOBN(0xbb1d81a1, 0xb585d584),
+           TOBN(0x8d5d85f5, 0x8c416388), TOBN(0x0d6e5a5a, 0x42fe474f)}},
+         {{TOBN(0xe7812766, 0x38235d4e), TOBN(0x1c62bd67, 0x496e3298),
+           TOBN(0x8378660c, 0x3f175bc8), TOBN(0x4d04e189, 0x17afdd4d)},
+          {TOBN(0x32a81601, 0x85a8068c), TOBN(0xdb58e4e1, 0x92b29a85),
+           TOBN(0xe8a65b86, 0xc70d8a3b), TOBN(0x5f0e6f4e, 0x98a0403b)}},
+         {{TOBN(0x08129684, 0x69ed2370), TOBN(0x34dc30bd, 0x0871ee26),
+           TOBN(0x3a5ce948, 0x7c9c5b05), TOBN(0x7d487b80, 0x43a90c87)},
+          {TOBN(0x4089ba37, 0xdd0e7179), TOBN(0x45f80191, 0xb4041811),
+           TOBN(0x1c3e1058, 0x98747ba5), TOBN(0x98c4e13a, 0x6e1ae592)}},
+         {{TOBN(0xd44636e6, 0xe82c9f9e), TOBN(0x711db87c, 0xc33a1043),
+           TOBN(0x6f431263, 0xaa8aec05), TOBN(0x43ff120d, 0x2744a4aa)},
+          {TOBN(0xd3bd892f, 0xae77779b), TOBN(0xf0fe0cc9, 0x8cdc9f82),
+           TOBN(0xca5f7fe6, 0xf1c5b1bc), TOBN(0xcc63a682, 0x44929a72)}},
+         {{TOBN(0xc7eaba0c, 0x09dbe19a), TOBN(0x2f3585ad, 0x6b5c73c2),
+           TOBN(0x8ab8924b, 0x0ae50c30), TOBN(0x17fcd27a, 0x638b30ba)},
+          {TOBN(0xaf414d34, 0x10b3d5a5), TOBN(0x09c107d2, 0x2a9accf1),
+           TOBN(0x15dac49f, 0x946a6242), TOBN(0xaec3df2a, 0xd707d642)}},
+         {{TOBN(0x2c2492b7, 0x3f894ae0), TOBN(0xf59df3e5, 0xb75f18ce),
+           TOBN(0x7cb740d2, 0x8f53cad0), TOBN(0x3eb585fb, 0xc4f01294)},
+          {TOBN(0x17da0c86, 0x32c7f717), TOBN(0xeb8c795b, 0xaf943f4c),
+           TOBN(0x4ee23fb5, 0xf67c51d2), TOBN(0xef187575, 0x68889949)}},
+         {{TOBN(0xa6b4bdb2, 0x0389168b), TOBN(0xc4ecd258, 0xea577d03),
+           TOBN(0x3a63782b, 0x55743082), TOBN(0x6f678f4c, 0xc72f08cd)},
+          {TOBN(0x553511cf, 0x65e58dd8), TOBN(0xd53b4e3e, 0xd402c0cd),
+           TOBN(0x37de3e29, 0xa037c14c), TOBN(0x86b6c516, 0xc05712aa)}},
+         {{TOBN(0x2834da3e, 0xb38dff6f), TOBN(0xbe012c52, 0xea636be8),
+           TOBN(0x292d238c, 0x61dd37f8), TOBN(0x0e54523f, 0x8f8142db)},
+          {TOBN(0xe31eb436, 0x036a05d8), TOBN(0x83e3cdff, 0x1e93c0ff),
+           TOBN(0x3fd2fe0f, 0x50821ddf), TOBN(0xc8e19b0d, 0xff9eb33b)}},
+         {{TOBN(0xc8cc943f, 0xb569a5fe), TOBN(0xad0090d4, 0xd4342d75),
+           TOBN(0x82090b4b, 0xcaeca000), TOBN(0xca39687f, 0x1bd410eb)},
+          {TOBN(0xe7bb0df7, 0x65959d77), TOBN(0x39d78218, 0x9c964999),
+           TOBN(0xd87f62e8, 0xb2415451), TOBN(0xe5efb774, 0xbed76108)}},
+         {{TOBN(0x3ea011a4, 0xe822f0d0), TOBN(0xbc647ad1, 0x5a8704f8),
+           TOBN(0xbb315b35, 0x50c6820f), TOBN(0x863dec3d, 0xb7e76bec)},
+          {TOBN(0x01ff5d3a, 0xf017bfc7), TOBN(0x20054439, 0x976b8229),
+           TOBN(0x067fca37, 0x0bbd0d3b), TOBN(0xf63dde64, 0x7f5e3d0f)}},
+         {{TOBN(0x22dbefb3, 0x2a4c94e9), TOBN(0xafbff0fe, 0x96f8278a),
+           TOBN(0x80aea0b1, 0x3503793d), TOBN(0xb2238029, 0x5f06cd29)},
+          {TOBN(0x65703e57, 0x8ec3feca), TOBN(0x06c38314, 0x393e7053),
+           TOBN(0xa0b751eb, 0x7c6734c4), TOBN(0xd2e8a435, 0xc59f0f1e)}},
+         {{TOBN(0x147d9052, 0x5e9ca895), TOBN(0x2f4dd31e, 0x972072df),
+           TOBN(0xa16fda8e, 0xe6c6755c), TOBN(0xc66826ff, 0xcf196558)},
+          {TOBN(0x1f1a76a3, 0x0cf43895), TOBN(0xa9d604e0, 0x83c3097b),
+           TOBN(0xe1908309, 0x66390e0e), TOBN(0xa50bf753, 0xb3c85eff)}},
+         {{TOBN(0x0696bdde, 0xf6a70251), TOBN(0x548b801b, 0x3c6ab16a),
+           TOBN(0x37fcf704, 0xa4d08762), TOBN(0x090b3def, 0xdff76c4e)},
+          {TOBN(0x87e8cb89, 0x69cb9158), TOBN(0x44a90744, 0x995ece43),
+           TOBN(0xf85395f4, 0x0ad9fbf5), TOBN(0x49b0f6c5, 0x4fb0c82d)}},
+         {{TOBN(0x75d9bc15, 0xadf7cccf), TOBN(0x81a3e5d6, 0xdfa1e1b0),
+           TOBN(0x8c39e444, 0x249bc17e), TOBN(0xf37dccb2, 0x8ea7fd43)},
+          {TOBN(0xda654873, 0x907fba12), TOBN(0x35daa6da, 0x4a372904),
+           TOBN(0x0564cfc6, 0x6283a6c5), TOBN(0xd09fa4f6, 0x4a9395bf)}},
+         {{TOBN(0x688e9ec9, 0xaeb19a36), TOBN(0xd913f1ce, 0xc7bfbfb4),
+           TOBN(0x797b9a3c, 0x61c2faa6), TOBN(0x2f979bec, 0x6a0a9c12)},
+          {TOBN(0xb5969d0f, 0x359679ec), TOBN(0xebcf523d, 0x079b0460),
+           TOBN(0xfd6b0008, 0x10fab870), TOBN(0x3f2edcda, 0x9373a39c)}},
+         {{TOBN(0x0d64f9a7, 0x6f568431), TOBN(0xf848c27c, 0x02f8898c),
+           TOBN(0xf418ade1, 0x260b5bd5), TOBN(0xc1f3e323, 0x6973dee8)},
+          {TOBN(0x46e9319c, 0x26c185dd), TOBN(0x6d85b7d8, 0x546f0ac4),
+           TOBN(0x427965f2, 0x247f9d57), TOBN(0xb519b636, 0xb0035f48)}},
+         {{TOBN(0x6b6163a9, 0xab87d59c), TOBN(0xff9f58c3, 0x39caaa11),
+           TOBN(0x4ac39cde, 0x3177387b), TOBN(0x5f6557c2, 0x873e77f9)},
+          {TOBN(0x67504006, 0x36a83041), TOBN(0x9b1c96ca, 0x75ef196c),
+           TOBN(0xf34283de, 0xb08c7940), TOBN(0x7ea09644, 0x1128c316)}},
+         {{TOBN(0xb510b3b5, 0x6aa39dff), TOBN(0x59b43da2, 0x9f8e4d8c),
+           TOBN(0xa8ce31fd, 0x9e4c4b9f), TOBN(0x0e20be26, 0xc1303c01)},
+          {TOBN(0x18187182, 0xe8ee47c9), TOBN(0xd9687cdb, 0x7db98101),
+           TOBN(0x7a520e4d, 0xa1e14ff6), TOBN(0x429808ba, 0x8836d572)}},
+         {{TOBN(0xa37ca60d, 0x4944b663), TOBN(0xf901f7a9, 0xa3f91ae5),
+           TOBN(0xe4e3e76e, 0x9e36e3b1), TOBN(0x9aa219cf, 0x29d93250)},
+          {TOBN(0x347fe275, 0x056a2512), TOBN(0xa4d643d9, 0xde65d95c),
+           TOBN(0x9669d396, 0x699fc3ed), TOBN(0xb598dee2, 0xcf8c6bbe)}},
+         {{TOBN(0x682ac1e5, 0xdda9e5c6), TOBN(0x4e0d3c72, 0xcaa9fc95),
+           TOBN(0x17faaade, 0x772bea44), TOBN(0x5ef8428c, 0xab0009c8)},
+          {TOBN(0xcc4ce47a, 0x460ff016), TOBN(0xda6d12bf, 0x725281cb),
+           TOBN(0x44c67848, 0x0223aad2), TOBN(0x6e342afa, 0x36256e28)}},
+         {{TOBN(0x1400bb0b, 0x93a37c04), TOBN(0x62b1bc9b, 0xdd10bd96),
+           TOBN(0x7251adeb, 0x0dac46b7), TOBN(0x7d33b92e, 0x7be4ef51)},
+          {TOBN(0x28b2a94b, 0xe61fa29a), TOBN(0x4b2be13f, 0x06422233),
+           TOBN(0x36d6d062, 0x330d8d37), TOBN(0x5ef80e1e, 0xb28ca005)}},
+         {{TOBN(0x174d4699, 0x6d16768e), TOBN(0x9fc4ff6a, 0x628bf217),
+           TOBN(0x77705a94, 0x154e490d), TOBN(0x9d96dd28, 0x8d2d997a)},
+          {TOBN(0x77e2d9d8, 0xce5d72c4), TOBN(0x9d06c5a4, 0xc11c714f),
+           TOBN(0x02aa5136, 0x79e4a03e), TOBN(0x1386b3c2, 0x030ff28b)}},
+         {{TOBN(0xfe82e8a6, 0xfb283f61), TOBN(0x7df203e5, 0xf3abc3fb),
+           TOBN(0xeec7c351, 0x3a4d3622), TOBN(0xf7d17dbf, 0xdf762761)},
+          {TOBN(0xc3956e44, 0x522055f0), TOBN(0xde3012db, 0x8fa748db),
+           TOBN(0xca9fcb63, 0xbf1dcc14), TOBN(0xa56d9dcf, 0xbe4e2f3a)}},
+         {{TOBN(0xb86186b6, 0x8bcec9c2), TOBN(0x7cf24df9, 0x680b9f06),
+           TOBN(0xc46b45ea, 0xc0d29281), TOBN(0xfff42bc5, 0x07b10e12)},
+          {TOBN(0x12263c40, 0x4d289427), TOBN(0x3d5f1899, 0xb4848ec4),
+           TOBN(0x11f97010, 0xd040800c), TOBN(0xb4c5f529, 0x300feb20)}},
+         {{TOBN(0xcc543f8f, 0xde94fdcb), TOBN(0xe96af739, 0xc7c2f05e),
+           TOBN(0xaa5e0036, 0x882692e1), TOBN(0x09c75b68, 0x950d4ae9)},
+          {TOBN(0x62f63df2, 0xb5932a7a), TOBN(0x2658252e, 0xde0979ad),
+           TOBN(0x2a19343f, 0xb5e69631), TOBN(0x718c7501, 0x525b666b)}},
+         {{TOBN(0x26a42d69, 0xea40dc3a), TOBN(0xdc84ad22, 0xaecc018f),
+           TOBN(0x25c36c7b, 0x3270f04a), TOBN(0x46ba6d47, 0x50fa72ed)},
+          {TOBN(0x6c37d1c5, 0x93e58a8e), TOBN(0xa2394731, 0x120c088c),
+           TOBN(0xc3be4263, 0xcb6e86da), TOBN(0x2c417d36, 0x7126d038)}},
+         {{TOBN(0x5b70f9c5, 0x8b6f8efa), TOBN(0x671a2faa, 0x37718536),
+           TOBN(0xd3ced3c6, 0xb539c92b), TOBN(0xe56f1bd9, 0xa31203c2)},
+          {TOBN(0x8b096ec4, 0x9ff3c8eb), TOBN(0x2deae432, 0x43491cea),
+           TOBN(0x2465c6eb, 0x17943794), TOBN(0x5d267e66, 0x20586843)}},
+         {{TOBN(0x9d3d116d, 0xb07159d0), TOBN(0xae07a67f, 0xc1896210),
+           TOBN(0x8fc84d87, 0xbb961579), TOBN(0x30009e49, 0x1c1f8dd6)},
+          {TOBN(0x8a8caf22, 0xe3132819), TOBN(0xcffa197c, 0xf23ab4ff),
+           TOBN(0x58103a44, 0x205dd687), TOBN(0x57b796c3, 0x0ded67a2)}},
+         {{TOBN(0x0b9c3a6c, 0xa1779ad7), TOBN(0xa33cfe2e, 0x357c09c5),
+           TOBN(0x2ea29315, 0x3db4a57e), TOBN(0x91959695, 0x8ebeb52e)},
+          {TOBN(0x118db9a6, 0xe546c879), TOBN(0x8e996df4, 0x6295c8d6),
+           TOBN(0xdd990484, 0x55ec806b), TOBN(0x24f291ca, 0x165c1035)}},
+         {{TOBN(0xcca523bb, 0x440e2229), TOBN(0x324673a2, 0x73ef4d04),
+           TOBN(0xaf3adf34, 0x3e11ec39), TOBN(0x6136d7f1, 0xdc5968d3)},
+          {TOBN(0x7a7b2899, 0xb053a927), TOBN(0x3eaa2661, 0xae067ecd),
+           TOBN(0x8549b9c8, 0x02779cd9), TOBN(0x061d7940, 0xc53385ea)}},
+         {{TOBN(0x3e0ba883, 0xf06d18bd), TOBN(0x4ba6de53, 0xb2700843),
+           TOBN(0xb966b668, 0x591a9e4d), TOBN(0x93f67567, 0x7f4fa0ed)},
+          {TOBN(0x5a02711b, 0x4347237b), TOBN(0xbc041e2f, 0xe794608e),
+           TOBN(0x55af10f5, 0x70f73d8c), TOBN(0xd2d4d4f7, 0xbb7564f7)}},
+         {{TOBN(0xd7d27a89, 0xb3e93ce7), TOBN(0xf7b5a875, 0x5d3a2c1b),
+           TOBN(0xb29e68a0, 0x255b218a), TOBN(0xb533837e, 0x8af76754)},
+          {TOBN(0xd1b05a73, 0x579fab2e), TOBN(0xb41055a1, 0xecd74385),
+           TOBN(0xb2369274, 0x445e9115), TOBN(0x2972a7c4, 0xf520274e)}},
+         {{TOBN(0x6c08334e, 0xf678e68a), TOBN(0x4e4160f0, 0x99b057ed),
+           TOBN(0x3cfe11b8, 0x52ccb69a), TOBN(0x2fd1823a, 0x21c8f772)},
+          {TOBN(0xdf7f072f, 0x3298f055), TOBN(0x8c0566f9, 0xfec74a6e),
+           TOBN(0xe549e019, 0x5bb4d041), TOBN(0x7c3930ba, 0x9208d850)}},
+         {{TOBN(0xe07141fc, 0xaaa2902b), TOBN(0x539ad799, 0xe4f69ad3),
+           TOBN(0xa6453f94, 0x813f9ffd), TOBN(0xc58d3c48, 0x375bc2f7)},
+          {TOBN(0xb3326fad, 0x5dc64e96), TOBN(0x3aafcaa9, 0xb240e354),
+           TOBN(0x1d1b0903, 0xaca1e7a9), TOBN(0x4ceb9767, 0x1211b8a0)}},
+         {{TOBN(0xeca83e49, 0xe32a858e), TOBN(0x4c32892e, 0xae907bad),
+           TOBN(0xd5b42ab6, 0x2eb9b494), TOBN(0x7fde3ee2, 0x1eabae1b)},
+          {TOBN(0x13b5ab09, 0xcaf54957), TOBN(0xbfb028be, 0xe5f5d5d5),
+           TOBN(0x928a0650, 0x2003e2c0), TOBN(0x90793aac, 0x67476843)}},
+         {{TOBN(0x5e942e79, 0xc81710a0), TOBN(0x557e4a36, 0x27ccadd4),
+           TOBN(0x72a2bc56, 0x4bcf6d0c), TOBN(0x09ee5f43, 0x26d7b80c)},
+          {TOBN(0x6b70dbe9, 0xd4292f19), TOBN(0x56f74c26, 0x63f16b18),
+           TOBN(0xc23db0f7, 0x35fbb42a), TOBN(0xb606bdf6, 0x6ae10040)}},
+         {{TOBN(0x1eb15d4d, 0x044573ac), TOBN(0x7dc3cf86, 0x556b0ba4),
+           TOBN(0x97af9a33, 0xc60df6f7), TOBN(0x0b1ef85c, 0xa716ce8c)},
+          {TOBN(0x2922f884, 0xc96958be), TOBN(0x7c32fa94, 0x35690963),
+           TOBN(0x2d7f667c, 0xeaa00061), TOBN(0xeaaf7c17, 0x3547365c)}},
+         {{TOBN(0x1eb4de46, 0x87032d58), TOBN(0xc54f3d83, 0x5e2c79e0),
+           TOBN(0x07818df4, 0x5d04ef23), TOBN(0x55faa9c8, 0x673d41b4)},
+          {TOBN(0xced64f6f, 0x89b95355), TOBN(0x4860d2ea, 0xb7415c84),
+           TOBN(0x5fdb9bd2, 0x050ebad3), TOBN(0xdb53e0cc, 0x6685a5bf)}},
+         {{TOBN(0xb830c031, 0x9feb6593), TOBN(0xdd87f310, 0x6accff17),
+           TOBN(0x2303ebab, 0x9f555c10), TOBN(0x94603695, 0x287e7065)},
+          {TOBN(0xf88311c3, 0x2e83358c), TOBN(0x508dd9b4, 0xeefb0178),
+           TOBN(0x7ca23706, 0x2dba8652), TOBN(0x62aac5a3, 0x0047abe5)}},
+         {{TOBN(0x9a61d2a0, 0x8b1ea7b3), TOBN(0xd495ab63, 0xae8b1485),
+           TOBN(0x38740f84, 0x87052f99), TOBN(0x178ebe5b, 0xb2974eea)},
+          {TOBN(0x030bbcca, 0x5b36d17f), TOBN(0xb5e4cce3, 0xaaf86eea),
+           TOBN(0xb51a0220, 0x68f8e9e0), TOBN(0xa4348796, 0x09eb3e75)}},
+         {{TOBN(0xbe592309, 0xeef1a752), TOBN(0x5d7162d7, 0x6f2aa1ed),
+           TOBN(0xaebfb5ed, 0x0f007dd2), TOBN(0x255e14b2, 0xc89edd22)},
+          {TOBN(0xba85e072, 0x0303b697), TOBN(0xc5d17e25, 0xf05720ff),
+           TOBN(0x02b58d6e, 0x5128ebb6), TOBN(0x2c80242d, 0xd754e113)}},
+         {{TOBN(0x919fca5f, 0xabfae1ca), TOBN(0x937afaac, 0x1a21459b),
+           TOBN(0x9e0ca91c, 0x1f66a4d2), TOBN(0x194cc7f3, 0x23ec1331)},
+          {TOBN(0xad25143a, 0x8aa11690), TOBN(0xbe40ad8d, 0x09b59e08),
+           TOBN(0x37d60d9b, 0xe750860a), TOBN(0x6c53b008, 0xc6bf434c)}},
+         {{TOBN(0xb572415d, 0x1356eb80), TOBN(0xb8bf9da3, 0x9578ded8),
+           TOBN(0x22658e36, 0x5e8fb38b), TOBN(0x9b70ce22, 0x5af8cb22)},
+          {TOBN(0x7c00018a, 0x829a8180), TOBN(0x84329f93, 0xb81ed295),
+           TOBN(0x7c343ea2, 0x5f3cea83), TOBN(0x38f8655f, 0x67586536)}},
+         {{TOBN(0xa661a0d0, 0x1d3ec517), TOBN(0x98744652, 0x512321ae),
+           TOBN(0x084ca591, 0xeca92598), TOBN(0xa9bb9dc9, 0x1dcb3feb)},
+          {TOBN(0x14c54355, 0x78b4c240), TOBN(0x5ed62a3b, 0x610cafdc),
+           TOBN(0x07512f37, 0x1b38846b), TOBN(0x571bb70a, 0xb0e38161)}},
+         {{TOBN(0xb556b95b, 0x2da705d2), TOBN(0x3ef8ada6, 0xb1a08f98),
+           TOBN(0x85302ca7, 0xddecfbe5), TOBN(0x0e530573, 0x943105cd)},
+          {TOBN(0x60554d55, 0x21a9255d), TOBN(0x63a32fa1, 0xf2f3802a),
+           TOBN(0x35c8c5b0, 0xcd477875), TOBN(0x97f458ea, 0x6ad42da1)}},
+         {{TOBN(0x832d7080, 0xeb6b242d), TOBN(0xd30bd023, 0x3b71e246),
+           TOBN(0x7027991b, 0xbe31139d), TOBN(0x68797e91, 0x462e4e53)},
+          {TOBN(0x423fe20a, 0x6b4e185a), TOBN(0x82f2c67e, 0x42d9b707),
+           TOBN(0x25c81768, 0x4cf7811b), TOBN(0xbd53005e, 0x045bb95d)}}},
+        {{{TOBN(0xe5f649be, 0x9d8e68fd), TOBN(0xdb0f0533, 0x1b044320),
+           TOBN(0xf6fde9b3, 0xe0c33398), TOBN(0x92f4209b, 0x66c8cfae)},
+          {TOBN(0xe9d1afcc, 0x1a739d4b), TOBN(0x09aea75f, 0xa28ab8de),
+           TOBN(0x14375fb5, 0xeac6f1d0), TOBN(0x6420b560, 0x708f7aa5)}},
+         {{TOBN(0x9eae499c, 0x6254dc41), TOBN(0x7e293924, 0x7a837e7e),
+           TOBN(0x74aec08c, 0x090524a7), TOBN(0xf82b9219, 0x8d6f55f2)},
+          {TOBN(0x493c962e, 0x1402cec5), TOBN(0x9f17ca17, 0xfa2f30e7),
+           TOBN(0xbcd783e8, 0xe9b879cb), TOBN(0xea3d8c14, 0x5a6f145f)}},
+         {{TOBN(0xdede15e7, 0x5e0dee6e), TOBN(0x74f24872, 0xdc628aa2),
+           TOBN(0xd3e9c4fe, 0x7861bb93), TOBN(0x56d4822a, 0x6187b2e0)},
+          {TOBN(0xb66417cf, 0xc59826f9), TOBN(0xca260969, 0x2408169e),
+           TOBN(0xedf69d06, 0xc79ef885), TOBN(0x00031f8a, 0xdc7d138f)}},
+         {{TOBN(0x103c46e6, 0x0ebcf726), TOBN(0x4482b831, 0x6231470e),
+           TOBN(0x6f6dfaca, 0x487c2109), TOBN(0x2e0ace97, 0x62e666ef)},
+          {TOBN(0x3246a9d3, 0x1f8d1f42), TOBN(0x1b1e83f1, 0x574944d2),
+           TOBN(0x13dfa63a, 0xa57f334b), TOBN(0x0cf8daed, 0x9f025d81)}},
+         {{TOBN(0x30d78ea8, 0x00ee11c1), TOBN(0xeb053cd4, 0xb5e3dd75),
+           TOBN(0x9b65b13e, 0xd58c43c5), TOBN(0xc3ad49bd, 0xbd151663)},
+          {TOBN(0x99fd8e41, 0xb6427990), TOBN(0x12cf15bd, 0x707eae1e),
+           TOBN(0x29ad4f1b, 0x1aabb71e), TOBN(0x5143e74d, 0x07545d0e)}},
+         {{TOBN(0x30266336, 0xc88bdee1), TOBN(0x25f29306, 0x5876767c),
+           TOBN(0x9c078571, 0xc6731996), TOBN(0xc88690b2, 0xed552951)},
+          {TOBN(0x274f2c2d, 0x852705b4), TOBN(0xb0bf8d44, 0x4e09552d),
+           TOBN(0x7628beeb, 0x986575d1), TOBN(0x407be238, 0x7f864651)}},
+         {{TOBN(0x0e5e3049, 0xa639fc6b), TOBN(0xe75c35d9, 0x86003625),
+           TOBN(0x0cf35bd8, 0x5dcc1646), TOBN(0x8bcaced2, 0x6c26273a)},
+          {TOBN(0xe22ecf1d, 0xb5536742), TOBN(0x013dd897, 0x1a9e068b),
+           TOBN(0x17f411cb, 0x8a7909c5), TOBN(0x5757ac98, 0x861dd506)}},
+         {{TOBN(0x85de1f0d, 0x1e935abb), TOBN(0xdefd10b4, 0x154de37a),
+           TOBN(0xb8d9e392, 0x369cebb5), TOBN(0x54d5ef9b, 0x761324be)},
+          {TOBN(0x4d6341ba, 0x74f17e26), TOBN(0xc0a0e3c8, 0x78c1dde4),
+           TOBN(0xa6d77581, 0x87d918fd), TOBN(0x66876015, 0x02ca3a13)}},
+         {{TOBN(0xc7313e9c, 0xf36658f0), TOBN(0xc433ef1c, 0x71f8057e),
+           TOBN(0x85326246, 0x1b6a835a), TOBN(0xc8f05398, 0x7c86394c)},
+          {TOBN(0xff398cdf, 0xe983c4a1), TOBN(0xbf5e8162, 0x03b7b931),
+           TOBN(0x93193c46, 0xb7b9045b), TOBN(0x1e4ebf5d, 0xa4a6e46b)}},
+         {{TOBN(0xf9942a60, 0x43a24fe7), TOBN(0x29c1191e, 0xffb3492b),
+           TOBN(0x9f662449, 0x902fde05), TOBN(0xc792a7ac, 0x6713c32d)},
+          {TOBN(0x2fd88ad8, 0xb737982c), TOBN(0x7e3a0319, 0xa21e60e3),
+           TOBN(0x09b0de44, 0x7383591a), TOBN(0x6df141ee, 0x8310a456)}},
+         {{TOBN(0xaec1a039, 0xe6d6f471), TOBN(0x14b2ba0f, 0x1198d12e),
+           TOBN(0xebc1a160, 0x3aeee5ac), TOBN(0x401f4836, 0xe0b964ce)},
+          {TOBN(0x2ee43796, 0x4fd03f66), TOBN(0x3fdb4e49, 0xdd8f3f12),
+           TOBN(0x6ef267f6, 0x29380f18), TOBN(0x3e8e9670, 0x8da64d16)}},
+         {{TOBN(0xbc19180c, 0x207674f1), TOBN(0x112e09a7, 0x33ae8fdb),
+           TOBN(0x99667554, 0x6aaeb71e), TOBN(0x79432af1, 0xe101b1c7)},
+          {TOBN(0xd5eb558f, 0xde2ddec6), TOBN(0x81392d1f, 0x5357753f),
+           TOBN(0xa7a76b97, 0x3ae1158a), TOBN(0x416fbbff, 0x4a899991)}},
+         {{TOBN(0x9e65fdfd, 0x0d4a9dcf), TOBN(0x7bc29e48, 0x944ddf12),
+           TOBN(0xbc1a92d9, 0x3c856866), TOBN(0x273c6905, 0x6e98dfe2)},
+          {TOBN(0x69fce418, 0xcdfaa6b8), TOBN(0x606bd823, 0x5061c69f),
+           TOBN(0x42d495a0, 0x6af75e27), TOBN(0x8ed3d505, 0x6d873a1f)}},
+         {{TOBN(0xaf552841, 0x6ab25b6a), TOBN(0xc6c0ffc7, 0x2b1a4523),
+           TOBN(0xab18827b, 0x21c99e03), TOBN(0x060e8648, 0x9034691b)},
+          {TOBN(0x5207f90f, 0x93c7f398), TOBN(0x9f4a96cb, 0x82f8d10b),
+           TOBN(0xdd71cd79, 0x3ad0f9e3), TOBN(0x84f435d2, 0xfc3a54f5)}},
+         {{TOBN(0x4b03c55b, 0x8e33787f), TOBN(0xef42f975, 0xa6384673),
+           TOBN(0xff7304f7, 0x5051b9f0), TOBN(0x18aca1dc, 0x741c87c2)},
+          {TOBN(0x56f120a7, 0x2d4bfe80), TOBN(0xfd823b3d, 0x053e732c),
+           TOBN(0x11bccfe4, 0x7537ca16), TOBN(0xdf6c9c74, 0x1b5a996b)}},
+         {{TOBN(0xee7332c7, 0x904fc3fa), TOBN(0x14a23f45, 0xc7e3636a),
+           TOBN(0xc38659c3, 0xf091d9aa), TOBN(0x4a995e5d, 0xb12d8540)},
+          {TOBN(0x20a53bec, 0xf3a5598a), TOBN(0x56534b17, 0xb1eaa995),
+           TOBN(0x9ed3dca4, 0xbf04e03c), TOBN(0x716c563a, 0xd8d56268)}},
+         {{TOBN(0x27ba77a4, 0x1d6178e7), TOBN(0xe4c80c40, 0x68a1ff8e),
+           TOBN(0x75011099, 0x0a13f63d), TOBN(0x7bf33521, 0xa61d46f3)},
+          {TOBN(0x0aff218e, 0x10b365bb), TOBN(0x81021804, 0x0fd7ea75),
+           TOBN(0x05a3fd8a, 0xa4b3a925), TOBN(0xb829e75f, 0x9b3db4e6)}},
+         {{TOBN(0x6bdc75a5, 0x4d53e5fb), TOBN(0x04a5dc02, 0xd52717e3),
+           TOBN(0x86af502f, 0xe9a42ec2), TOBN(0x8867e8fb, 0x2630e382)},
+          {TOBN(0xbf845c6e, 0xbec9889b), TOBN(0x54f491f2, 0xcb47c98d),
+           TOBN(0xa3091fba, 0x790c2a12), TOBN(0xd7f6fd78, 0xc20f708b)}},
+         {{TOBN(0xa569ac30, 0xacde5e17), TOBN(0xd0f996d0, 0x6852b4d7),
+           TOBN(0xe51d4bb5, 0x4609ae54), TOBN(0x3fa37d17, 0x0daed061)},
+          {TOBN(0x62a88684, 0x34b8fb41), TOBN(0x99a2acbd, 0x9efb64f1),
+           TOBN(0xb75c1a5e, 0x6448e1f2), TOBN(0xfa99951a, 0x42b5a069)}},
+         {{TOBN(0x6d956e89, 0x2f3b26e7), TOBN(0xf4709860, 0xda875247),
+           TOBN(0x3ad15179, 0x2482dda3), TOBN(0xd64110e3, 0x017d82f0)},
+          {TOBN(0x14928d2c, 0xfad414e4), TOBN(0x2b155f58, 0x2ed02b24),
+           TOBN(0x481a141b, 0xcb821bf1), TOBN(0x12e3c770, 0x4f81f5da)}},
+         {{TOBN(0xe49c5de5, 0x9fff8381), TOBN(0x11053232, 0x5bbec894),
+           TOBN(0xa0d051cc, 0x454d88c4), TOBN(0x4f6db89c, 0x1f8e531b)},
+          {TOBN(0x34fe3fd6, 0xca563a44), TOBN(0x7f5c2215, 0x58da8ab9),
+           TOBN(0x8445016d, 0x9474f0a1), TOBN(0x17d34d61, 0xcb7d8a0a)}},
+         {{TOBN(0x8e9d3910, 0x1c474019), TOBN(0xcaff2629, 0xd52ceefb),
+           TOBN(0xf9cf3e32, 0xc1622c2b), TOBN(0xd4b95e3c, 0xe9071a05)},
+          {TOBN(0xfbbca61f, 0x1594438c), TOBN(0x1eb6e6a6, 0x04aadedf),
+           TOBN(0x853027f4, 0x68e14940), TOBN(0x221d322a, 0xdfabda9c)}},
+         {{TOBN(0xed8ea9f6, 0xb7cb179a), TOBN(0xdc7b764d, 0xb7934dcc),
+           TOBN(0xfcb13940, 0x5e09180d), TOBN(0x6629a6bf, 0xb47dc2dd)},
+          {TOBN(0xbfc55e4e, 0x9f5a915e), TOBN(0xb1db9d37, 0x6204441e),
+           TOBN(0xf82d68cf, 0x930c5f53), TOBN(0x17d3a142, 0xcbb605b1)}},
+         {{TOBN(0xdd5944ea, 0x308780f2), TOBN(0xdc8de761, 0x3845f5e4),
+           TOBN(0x6beaba7d, 0x7624d7a3), TOBN(0x1e709afd, 0x304df11e)},
+          {TOBN(0x95364376, 0x02170456), TOBN(0xbf204b3a, 0xc8f94b64),
+           TOBN(0x4e53af7c, 0x5680ca68), TOBN(0x0526074a, 0xe0c67574)}},
+         {{TOBN(0x95d8cef8, 0xecd92af6), TOBN(0xe6b9fa7a, 0x6cd1745a),
+           TOBN(0x3d546d3d, 0xa325c3e4), TOBN(0x1f57691d, 0x9ae93aae)},
+          {TOBN(0xe891f3fe, 0x9d2e1a33), TOBN(0xd430093f, 0xac063d35),
+           TOBN(0xeda59b12, 0x5513a327), TOBN(0xdc2134f3, 0x5536f18f)}},
+         {{TOBN(0xaa51fe2c, 0x5c210286), TOBN(0x3f68aaee, 0x1cab658c),
+           TOBN(0x5a23a00b, 0xf9357292), TOBN(0x9a626f39, 0x7efdabed)},
+          {TOBN(0xfe2b3bf3, 0x199d78e3), TOBN(0xb7a2af77, 0x71bbc345),
+           TOBN(0x3d19827a, 0x1e59802c), TOBN(0x823bbc15, 0xb487a51c)}},
+         {{TOBN(0x856139f2, 0x99d0a422), TOBN(0x9ac3df65, 0xf456c6fb),
+           TOBN(0xaddf65c6, 0x701f8bd6), TOBN(0x149f321e, 0x3758df87)},
+          {TOBN(0xb1ecf714, 0x721b7eba), TOBN(0xe17df098, 0x31a3312a),
+           TOBN(0xdb2fd6ec, 0xd5c4d581), TOBN(0xfd02996f, 0x8fcea1b3)}},
+         {{TOBN(0xe29fa63e, 0x7882f14f), TOBN(0xc9f6dc35, 0x07c6cadc),
+           TOBN(0x46f22d6f, 0xb882bed0), TOBN(0x1a45755b, 0xd118e52c)},
+          {TOBN(0x9f2c7c27, 0x7c4608cf), TOBN(0x7ccbdf32, 0x568012c2),
+           TOBN(0xfcb0aedd, 0x61729b0e), TOBN(0x7ca2ca9e, 0xf7d75dbf)}},
+         {{TOBN(0xf58fecb1, 0x6f640f62), TOBN(0xe274b92b, 0x39f51946),
+           TOBN(0x7f4dfc04, 0x6288af44), TOBN(0x0a91f32a, 0xeac329e5)},
+          {TOBN(0x43ad274b, 0xd6aaba31), TOBN(0x719a1640, 0x0f6884f9),
+           TOBN(0x685d29f6, 0xdaf91e20), TOBN(0x5ec1cc33, 0x27e49d52)}},
+         {{TOBN(0x38f4de96, 0x3b54a059), TOBN(0x0e0015e5, 0xefbcfdb3),
+           TOBN(0x177d23d9, 0x4dbb8da6), TOBN(0x98724aa2, 0x97a617ad)},
+          {TOBN(0x30f0885b, 0xfdb6558e), TOBN(0xf9f7a28a, 0xc7899a96),
+           TOBN(0xd2ae8ac8, 0x872dc112), TOBN(0xfa0642ca, 0x73c3c459)}},
+         {{TOBN(0x15296981, 0xe7dfc8d6), TOBN(0x67cd4450, 0x1fb5b94a),
+           TOBN(0x0ec71cf1, 0x0eddfd37), TOBN(0xc7e5eeb3, 0x9a8eddc7)},
+          {TOBN(0x02ac8e3d, 0x81d95028), TOBN(0x0088f172, 0x70b0e35d),
+           TOBN(0xec041fab, 0xe1881fe3), TOBN(0x62cf71b8, 0xd99e7faa)}},
+         {{TOBN(0x5043dea7, 0xe0f222c2), TOBN(0x309d42ac, 0x72e65142),
+           TOBN(0x94fe9ddd, 0x9216cd30), TOBN(0xd6539c7d, 0x0f87feec)},
+          {TOBN(0x03c5a57c, 0x432ac7d7), TOBN(0x72692cf0, 0x327fda10),
+           TOBN(0xec28c85f, 0x280698de), TOBN(0x2331fb46, 0x7ec283b1)}},
+         {{TOBN(0xd34bfa32, 0x2867e633), TOBN(0x78709a82, 0x0a9cc815),
+           TOBN(0xb7fe6964, 0x875e2fa5), TOBN(0x25cc064f, 0x9e98bfb5)},
+          {TOBN(0x9eb0151c, 0x493a65c5), TOBN(0x5fb5d941, 0x53182464),
+           TOBN(0x69e6f130, 0xf04618e2), TOBN(0xa8ecec22, 0xf89c8ab6)}},
+         {{TOBN(0xcd6ac88b, 0xb96209bd), TOBN(0x65fa8cdb, 0xb3e1c9e0),
+           TOBN(0xa47d22f5, 0x4a8d8eac), TOBN(0x83895cdf, 0x8d33f963)},
+          {TOBN(0xa8adca59, 0xb56cd3d1), TOBN(0x10c8350b, 0xdaf38232),
+           TOBN(0x2b161fb3, 0xa5080a9f), TOBN(0xbe7f5c64, 0x3af65b3a)}},
+         {{TOBN(0x2c754039, 0x97403a11), TOBN(0x94626cf7, 0x121b96af),
+           TOBN(0x431de7c4, 0x6a983ec2), TOBN(0x3780dd3a, 0x52cc3df7)},
+          {TOBN(0xe28a0e46, 0x2baf8e3b), TOBN(0xabe68aad, 0x51d299ae),
+           TOBN(0x603eb8f9, 0x647a2408), TOBN(0x14c61ed6, 0x5c750981)}},
+         {{TOBN(0x88b34414, 0xc53352e7), TOBN(0x5a34889c, 0x1337d46e),
+           TOBN(0x612c1560, 0xf95f2bc8), TOBN(0x8a3f8441, 0xd4807a3a)},
+          {TOBN(0x680d9e97, 0x5224da68), TOBN(0x60cd6e88, 0xc3eb00e9),
+           TOBN(0x3875a98e, 0x9a6bc375), TOBN(0xdc80f924, 0x4fd554c2)}},
+         {{TOBN(0x6c4b3415, 0x6ac77407), TOBN(0xa1e5ea8f, 0x25420681),
+           TOBN(0x541bfa14, 0x4607a458), TOBN(0x5dbc7e7a, 0x96d7fbf9)},
+          {TOBN(0x646a851b, 0x31590a47), TOBN(0x039e85ba, 0x15ee6df8),
+           TOBN(0xd19fa231, 0xd7b43fc0), TOBN(0x84bc8be8, 0x299a0e04)}},
+         {{TOBN(0x2b9d2936, 0xf20df03a), TOBN(0x24054382, 0x8608d472),
+           TOBN(0x76b6ba04, 0x9149202a), TOBN(0xb21c3831, 0x3670e7b7)},
+          {TOBN(0xddd93059, 0xd6fdee10), TOBN(0x9da47ad3, 0x78488e71),
+           TOBN(0x99cc1dfd, 0xa0fcfb25), TOBN(0x42abde10, 0x64696954)}},
+         {{TOBN(0x14cc15fc, 0x17eab9fe), TOBN(0xd6e863e4, 0xd3e70972),
+           TOBN(0x29a7765c, 0x6432112c), TOBN(0x88660001, 0x5b0774d8)},
+          {TOBN(0x3729175a, 0x2c088eae), TOBN(0x13afbcae, 0x8230b8d4),
+           TOBN(0x44768151, 0x915f4379), TOBN(0xf086431a, 0xd8d22812)}},
+         {{TOBN(0x37461955, 0xc298b974), TOBN(0x905fb5f0, 0xf8711e04),
+           TOBN(0x787abf3a, 0xfe969d18), TOBN(0x392167c2, 0x6f6a494e)},
+          {TOBN(0xfc7a0d2d, 0x28c511da), TOBN(0xf127c7dc, 0xb66a262d),
+           TOBN(0xf9c4bb95, 0xfd63fdf0), TOBN(0x90016589, 0x3913ef46)}},
+         {{TOBN(0x74d2a73c, 0x11aa600d), TOBN(0x2f5379bd, 0x9fb5ab52),
+           TOBN(0xe49e53a4, 0x7fb70068), TOBN(0x68dd39e5, 0x404aa9a7)},
+          {TOBN(0xb9b0cf57, 0x2ecaa9c3), TOBN(0xba0e103b, 0xe824826b),
+           TOBN(0x60c2198b, 0x4631a3c4), TOBN(0xc5ff84ab, 0xfa8966a2)}},
+         {{TOBN(0x2d6ebe22, 0xac95aff8), TOBN(0x1c9bb6db, 0xb5a46d09),
+           TOBN(0x419062da, 0x53ee4f8d), TOBN(0x7b9042d0, 0xbb97efef)},
+          {TOBN(0x0f87f080, 0x830cf6bd), TOBN(0x4861d19a, 0x6ec8a6c6),
+           TOBN(0xd3a0daa1, 0x202f01aa), TOBN(0xb0111674, 0xf25afbd5)}},
+         {{TOBN(0x6d00d6cf, 0x1afb20d9), TOBN(0x13695000, 0x40671bc5),
+           TOBN(0x913ab0dc, 0x2485ea9b), TOBN(0x1f2bed06, 0x9eef61ac)},
+          {TOBN(0x850c8217, 0x6d799e20), TOBN(0x93415f37, 0x3271c2de),
+           TOBN(0x5afb06e9, 0x6c4f5910), TOBN(0x688a52df, 0xc4e9e421)}},
+         {{TOBN(0x30495ba3, 0xe2a9a6db), TOBN(0x4601303d, 0x58f9268b),
+           TOBN(0xbe3b0dad, 0x7eb0f04f), TOBN(0x4ea47250, 0x4456936d)},
+          {TOBN(0x8caf8798, 0xd33fd3e7), TOBN(0x1ccd8a89, 0xeb433708),
+           TOBN(0x9effe3e8, 0x87fd50ad), TOBN(0xbe240a56, 0x6b29c4df)}},
+         {{TOBN(0xec4ffd98, 0xca0e7ebd), TOBN(0xf586783a, 0xe748616e),
+           TOBN(0xa5b00d8f, 0xc77baa99), TOBN(0x0acada29, 0xb4f34c9c)},
+          {TOBN(0x36dad67d, 0x0fe723ac), TOBN(0x1d8e53a5, 0x39c36c1e),
+           TOBN(0xe4dd342d, 0x1f4bea41), TOBN(0x64fd5e35, 0xebc9e4e0)}},
+         {{TOBN(0x96f01f90, 0x57908805), TOBN(0xb5b9ea3d, 0x5ed480dd),
+           TOBN(0x366c5dc2, 0x3efd2dd0), TOBN(0xed2fe305, 0x6e9dfa27)},
+          {TOBN(0x4575e892, 0x6e9197e2), TOBN(0x11719c09, 0xab502a5d),
+           TOBN(0x264c7bec, 0xe81f213f), TOBN(0x741b9241, 0x55f5c457)}},
+         {{TOBN(0x78ac7b68, 0x49a5f4f4), TOBN(0xf91d70a2, 0x9fc45b7d),
+           TOBN(0x39b05544, 0xb0f5f355), TOBN(0x11f06bce, 0xeef930d9)},
+          {TOBN(0xdb84d25d, 0x038d05e1), TOBN(0x04838ee5, 0xbacc1d51),
+           TOBN(0x9da3ce86, 0x9e8ee00b), TOBN(0xc3412057, 0xc36eda1f)}},
+         {{TOBN(0xae80b913, 0x64d9c2f4), TOBN(0x7468bac3, 0xa010a8ff),
+           TOBN(0xdfd20037, 0x37359d41), TOBN(0x1a0f5ab8, 0x15efeacc)},
+          {TOBN(0x7c25ad2f, 0x659d0ce0), TOBN(0x4011bcbb, 0x6785cff1),
+           TOBN(0x128b9912, 0x7e2192c7), TOBN(0xa549d8e1, 0x13ccb0e8)}},
+         {{TOBN(0x805588d8, 0xc85438b1), TOBN(0x5680332d, 0xbc25cb27),
+           TOBN(0xdcd1bc96, 0x1a4bfdf4), TOBN(0x779ff428, 0x706f6566)},
+          {TOBN(0x8bbee998, 0xf059987a), TOBN(0xf6ce8cf2, 0xcc686de7),
+           TOBN(0xf8ad3c4a, 0x953cfdb2), TOBN(0xd1d426d9, 0x2205da36)}},
+         {{TOBN(0xb3c0f13f, 0xc781a241), TOBN(0x3e89360e, 0xd75362a8),
+           TOBN(0xccd05863, 0xc8a91184), TOBN(0x9bd0c9b7, 0xefa8a7f4)},
+          {TOBN(0x97ee4d53, 0x8a912a4b), TOBN(0xde5e15f8, 0xbcf518fd),
+           TOBN(0x6a055bf8, 0xc467e1e0), TOBN(0x10be4b4b, 0x1587e256)}},
+         {{TOBN(0xd90c14f2, 0x668621c9), TOBN(0xd5518f51, 0xab9c92c1),
+           TOBN(0x8e6a0100, 0xd6d47b3c), TOBN(0xcbe980dd, 0x66716175)},
+          {TOBN(0x500d3f10, 0xddd83683), TOBN(0x3b6cb35d, 0x99cac73c),
+           TOBN(0x53730c8b, 0x6083d550), TOBN(0xcf159767, 0xdf0a1987)}},
+         {{TOBN(0x84bfcf53, 0x43ad73b3), TOBN(0x1b528c20, 0x4f035a94),
+           TOBN(0x4294edf7, 0x33eeac69), TOBN(0xb6283e83, 0x817f3240)},
+          {TOBN(0xc3fdc959, 0x0a5f25b1), TOBN(0xefaf8aa5, 0x5844ee22),
+           TOBN(0xde269ba5, 0xdbdde4de), TOBN(0xe3347160, 0xc56133bf)}},
+         {{TOBN(0xc1184219, 0x8d9ea9f8), TOBN(0x090de5db, 0xf3fc1ab5),
+           TOBN(0x404c37b1, 0x0bf22cda), TOBN(0x7de20ec8, 0xf5618894)},
+          {TOBN(0x754c588e, 0xecdaecab), TOBN(0x6ca4b0ed, 0x88342743),
+           TOBN(0x76f08bdd, 0xf4a938ec), TOBN(0xd182de89, 0x91493ccb)}},
+         {{TOBN(0xd652c53e, 0xc8a4186a), TOBN(0xb3e878db, 0x946d8e33),
+           TOBN(0x088453c0, 0x5f37663c), TOBN(0x5cd9daaa, 0xb407748b)},
+          {TOBN(0xa1f5197f, 0x586d5e72), TOBN(0x47500be8, 0xc443ca59),
+           TOBN(0x78ef35b2, 0xe2652424), TOBN(0x09c5d26f, 0x6dd7767d)}},
+         {{TOBN(0x7175a79a, 0xa74d3f7b), TOBN(0x0428fd8d, 0xcf5ea459),
+           TOBN(0x511cb97c, 0xa5d1746d), TOBN(0x36363939, 0xe71d1278)},
+          {TOBN(0xcf2df955, 0x10350bf4), TOBN(0xb3817439, 0x60aae782),
+           TOBN(0xa748c0e4, 0x3e688809), TOBN(0x98021fbf, 0xd7a5a006)}},
+         {{TOBN(0x9076a70c, 0x0e367a98), TOBN(0xbea1bc15, 0x0f62b7c2),
+           TOBN(0x2645a68c, 0x30fe0343), TOBN(0xacaffa78, 0x699dc14f)},
+          {TOBN(0xf4469964, 0x457bf9c4), TOBN(0x0db6407b, 0x0d2ead83),
+           TOBN(0x68d56cad, 0xb2c6f3eb), TOBN(0x3b512e73, 0xf376356c)}},
+         {{TOBN(0xe43b0e1f, 0xfce10408), TOBN(0x89ddc003, 0x5a5e257d),
+           TOBN(0xb0ae0d12, 0x0362e5b3), TOBN(0x07f983c7, 0xb0519161)},
+          {TOBN(0xc2e94d15, 0x5d5231e7), TOBN(0xcff22aed, 0x0b4f9513),
+           TOBN(0xb02588dd, 0x6ad0b0b5), TOBN(0xb967d1ac, 0x11d0dcd5)}},
+         {{TOBN(0x8dac6bc6, 0xcf777b6c), TOBN(0x0062bdbd, 0x4c6d1959),
+           TOBN(0x53da71b5, 0x0ef5cc85), TOBN(0x07012c7d, 0x4006f14f)},
+          {TOBN(0x4617f962, 0xac47800d), TOBN(0x53365f2b, 0xc102ed75),
+           TOBN(0xb422efcb, 0x4ab8c9d3), TOBN(0x195cb26b, 0x34af31c9)}},
+         {{TOBN(0x3a926e29, 0x05f2c4ce), TOBN(0xbd2bdecb, 0x9856966c),
+           TOBN(0x5d16ab3a, 0x85527015), TOBN(0x9f81609e, 0x4486c231)},
+          {TOBN(0xd8b96b2c, 0xda350002), TOBN(0xbd054690, 0xfa1b7d36),
+           TOBN(0xdc90ebf5, 0xe71d79bc), TOBN(0xf241b6f9, 0x08964e4e)}},
+         {{TOBN(0x7c838643, 0x2fe3cd4c), TOBN(0xe0f33acb, 0xb4bc633c),
+           TOBN(0xb4a9ecec, 0x3d139f1f), TOBN(0x05ce69cd, 0xdc4a1f49)},
+          {TOBN(0xa19d1b16, 0xf5f98aaf), TOBN(0x45bb71d6, 0x6f23e0ef),
+           TOBN(0x33789fcd, 0x46cdfdd3), TOBN(0x9b8e2978, 0xcee040ca)}},
+         {{TOBN(0x9c69b246, 0xae0a6828), TOBN(0xba533d24, 0x7078d5aa),
+           TOBN(0x7a2e42c0, 0x7bb4fbdb), TOBN(0xcfb4879a, 0x7035385c)},
+          {TOBN(0x8c3dd30b, 0x3281705b), TOBN(0x7e361c6c, 0x404fe081),
+           TOBN(0x7b21649c, 0x3f604edf), TOBN(0x5dbf6a3f, 0xe52ffe47)}},
+         {{TOBN(0xc41b7c23, 0x4b54d9bf), TOBN(0x1374e681, 0x3511c3d9),
+           TOBN(0x1863bf16, 0xc1b2b758), TOBN(0x90e78507, 0x1e9e6a96)},
+          {TOBN(0xab4bf98d, 0x5d86f174), TOBN(0xd74e0bd3, 0x85e96fe4),
+           TOBN(0x8afde39f, 0xcac5d344), TOBN(0x90946dbc, 0xbd91b847)}},
+         {{TOBN(0xf5b42358, 0xfe1a838c), TOBN(0x05aae6c5, 0x620ac9d8),
+           TOBN(0x8e193bd8, 0xa1ce5a0b), TOBN(0x8f710571, 0x4dabfd72)},
+          {TOBN(0x8d8fdd48, 0x182caaac), TOBN(0x8c4aeefa, 0x040745cf),
+           TOBN(0x73c6c30a, 0xf3b93e6d), TOBN(0x991241f3, 0x16f42011)}},
+         {{TOBN(0xa0158eea, 0xe457a477), TOBN(0xd19857db, 0xee6ddc05),
+           TOBN(0xb3265224, 0x18c41671), TOBN(0x3ffdfc7e, 0x3c2c0d58)},
+          {TOBN(0x3a3a5254, 0x26ee7cda), TOBN(0x341b0869, 0xdf02c3a8),
+           TOBN(0xa023bf42, 0x723bbfc8), TOBN(0x3d15002a, 0x14452691)}}},
+        {{{TOBN(0x5ef7324c, 0x85edfa30), TOBN(0x25976554, 0x87d4f3da),
+           TOBN(0x352f5bc0, 0xdcb50c86), TOBN(0x8f6927b0, 0x4832a96c)},
+          {TOBN(0xd08ee1ba, 0x55f2f94c), TOBN(0x6a996f99, 0x344b45fa),
+           TOBN(0xe133cb8d, 0xa8aa455d), TOBN(0x5d0721ec, 0x758dc1f7)}},
+         {{TOBN(0x6ba7a920, 0x79e5fb67), TOBN(0xe1331feb, 0x70aa725e),
+           TOBN(0x5080ccf5, 0x7df5d837), TOBN(0xe4cae01d, 0x7ff72e21)},
+          {TOBN(0xd9243ee6, 0x0412a77d), TOBN(0x06ff7cac, 0xdf449025),
+           TOBN(0xbe75f7cd, 0x23ef5a31), TOBN(0xbc957822, 0x0ddef7a8)}},
+         {{TOBN(0x8cf7230c, 0xb0ce1c55), TOBN(0x5b534d05, 0x0bbfb607),
+           TOBN(0xee1ef113, 0x0e16363b), TOBN(0x27e0aa7a, 0xb4999e82)},
+          {TOBN(0xce1dac2d, 0x79362c41), TOBN(0x67920c90, 0x91bb6cb0),
+           TOBN(0x1e648d63, 0x2223df24), TOBN(0x0f7d9eef, 0xe32e8f28)}},
+         {{TOBN(0x6943f39a, 0xfa833834), TOBN(0x22951722, 0xa6328562),
+           TOBN(0x81d63dd5, 0x4170fc10), TOBN(0x9f5fa58f, 0xaecc2e6d)},
+          {TOBN(0xb66c8725, 0xe77d9a3b), TOBN(0x11235cea, 0x6384ebe0),
+           TOBN(0x06a8c118, 0x5845e24a), TOBN(0x0137b286, 0xebd093b1)}},
+         {{TOBN(0xc589e1ce, 0x44ace150), TOBN(0xe0f8d3d9, 0x4381e97c),
+           TOBN(0x59e99b11, 0x62c5a4b8), TOBN(0x90d262f7, 0xfd0ec9f9)},
+          {TOBN(0xfbc854c9, 0x283e13c9), TOBN(0x2d04fde7, 0xaedc7085),
+           TOBN(0x057d7765, 0x47dcbecb), TOBN(0x8dbdf591, 0x9a76fa5f)}},
+         {{TOBN(0xd0150695, 0x0de1e578), TOBN(0x2e1463e7, 0xe9f72bc6),
+           TOBN(0xffa68441, 0x1b39eca5), TOBN(0x673c8530, 0x7c037f2f)},
+          {TOBN(0xd0d6a600, 0x747f91da), TOBN(0xb08d43e1, 0xc9cb78e9),
+           TOBN(0x0fc0c644, 0x27b5cef5), TOBN(0x5c1d160a, 0xa60a2fd6)}},
+         {{TOBN(0xf98cae53, 0x28c8e13b), TOBN(0x375f10c4, 0xb2eddcd1),
+           TOBN(0xd4eb8b7f, 0x5cce06ad), TOBN(0xb4669f45, 0x80a2e1ef)},
+          {TOBN(0xd593f9d0, 0x5bbd8699), TOBN(0x5528a4c9, 0xe7976d13),
+           TOBN(0x3923e095, 0x1c7e28d3), TOBN(0xb9293790, 0x3f6bb577)}},
+         {{TOBN(0xdb567d6a, 0xc42bd6d2), TOBN(0x6df86468, 0xbb1f96ae),
+           TOBN(0x0efe5b1a, 0x4843b28e), TOBN(0x961bbb05, 0x6379b240)},
+          {TOBN(0xb6caf5f0, 0x70a6a26b), TOBN(0x70686c0d, 0x328e6e39),
+           TOBN(0x80da06cf, 0x895fc8d3), TOBN(0x804d8810, 0xb363fdc9)}},
+         {{TOBN(0xbe22877b, 0x207f1670), TOBN(0x9b0dd188, 0x4e615291),
+           TOBN(0x625ae8dc, 0x97a3c2bf), TOBN(0x08584ef7, 0x439b86e8)},
+          {TOBN(0xde7190a5, 0xdcd898ff), TOBN(0x26286c40, 0x2058ee3d),
+           TOBN(0x3db0b217, 0x5f87b1c1), TOBN(0xcc334771, 0x102a6db5)}},
+         {{TOBN(0xd99de954, 0x2f770fb1), TOBN(0x97c1c620, 0x4cd7535e),
+           TOBN(0xd3b6c448, 0x3f09cefc), TOBN(0xd725af15, 0x5a63b4f8)},
+          {TOBN(0x0c95d24f, 0xc01e20ec), TOBN(0xdfd37494, 0x9ae7121f),
+           TOBN(0x7d6ddb72, 0xec77b7ec), TOBN(0xfe079d3b, 0x0353a4ae)}},
+         {{TOBN(0x3066e70a, 0x2e6ac8d2), TOBN(0x9c6b5a43, 0x106e5c05),
+           TOBN(0x52d3c6f5, 0xede59b8c), TOBN(0x30d6a5c3, 0xfccec9ae)},
+          {TOBN(0xedec7c22, 0x4fc0a9ef), TOBN(0x190ff083, 0x95c16ced),
+           TOBN(0xbe12ec8f, 0x94de0fde), TOBN(0x0d131ab8, 0x852d3433)}},
+         {{TOBN(0x42ace07e, 0x85701291), TOBN(0x94793ed9, 0x194061a8),
+           TOBN(0x30e83ed6, 0xd7f4a485), TOBN(0x9eec7269, 0xf9eeff4d)},
+          {TOBN(0x90acba59, 0x0c9d8005), TOBN(0x5feca458, 0x1e79b9d1),
+           TOBN(0x8fbe5427, 0x1d506a1e), TOBN(0xa32b2c8e, 0x2439cfa7)}},
+         {{TOBN(0x1671c173, 0x73dd0b4e), TOBN(0x37a28214, 0x44a054c6),
+           TOBN(0x81760a1b, 0x4e8b53f1), TOBN(0xa6c04224, 0xf9f93b9e)},
+          {TOBN(0x18784b34, 0xcf671e3c), TOBN(0x81bbecd2, 0xcda9b994),
+           TOBN(0x38831979, 0xb2ab3848), TOBN(0xef54feb7, 0xf2e03c2d)}},
+         {{TOBN(0xcf197ca7, 0xfb8088fa), TOBN(0x01427247, 0x4ddc96c5),
+           TOBN(0xa2d2550a, 0x30777176), TOBN(0x53469898, 0x4d0cf71d)},
+          {TOBN(0x6ce937b8, 0x3a2aaac6), TOBN(0xe9f91dc3, 0x5af38d9b),
+           TOBN(0x2598ad83, 0xc8bf2899), TOBN(0x8e706ac9, 0xb5536c16)}},
+         {{TOBN(0x40dc7495, 0xf688dc98), TOBN(0x26490cd7, 0x124c4afc),
+           TOBN(0xe651ec84, 0x1f18775c), TOBN(0x393ea6c3, 0xb4fdaf4a)},
+          {TOBN(0x1e1f3343, 0x7f338e0d), TOBN(0x39fb832b, 0x6053e7b5),
+           TOBN(0x46e702da, 0x619e14d5), TOBN(0x859cacd1, 0xcdeef6e0)}},
+         {{TOBN(0x63b99ce7, 0x4462007d), TOBN(0xb8ab48a5, 0x4cb5f5b7),
+           TOBN(0x9ec673d2, 0xf55edde7), TOBN(0xd1567f74, 0x8cfaefda)},
+          {TOBN(0x46381b6b, 0x0887bcec), TOBN(0x694497ce, 0xe178f3c2),
+           TOBN(0x5e6525e3, 0x1e6266cb), TOBN(0x5931de26, 0x697d6413)}},
+         {{TOBN(0x87f8df7c, 0x0e58d493), TOBN(0xb1ae5ed0, 0x58b73f12),
+           TOBN(0xc368f784, 0xdea0c34d), TOBN(0x9bd0a120, 0x859a91a0)},
+          {TOBN(0xb00d88b7, 0xcc863c68), TOBN(0x3a1cc11e, 0x3d1f4d65),
+           TOBN(0xea38e0e7, 0x0aa85593), TOBN(0x37f13e98, 0x7dc4aee8)}},
+         {{TOBN(0x10d38667, 0xbc947bad), TOBN(0x738e07ce, 0x2a36ee2e),
+           TOBN(0xc93470cd, 0xc577fcac), TOBN(0xdee1b616, 0x2782470d)},
+          {TOBN(0x36a25e67, 0x2e793d12), TOBN(0xd6aa6cae, 0xe0f186da),
+           TOBN(0x474d0fd9, 0x80e07af7), TOBN(0xf7cdc47d, 0xba8a5cd4)}},
+         {{TOBN(0x28af6d9d, 0xab15247f), TOBN(0x7c789c10, 0x493a537f),
+           TOBN(0x7ac9b110, 0x23a334e7), TOBN(0x0236ac09, 0x12c9c277)},
+          {TOBN(0xa7e5bd25, 0x1d7a5144), TOBN(0x098b9c2a, 0xf13ec4ec),
+           TOBN(0x3639daca, 0xd3f0abca), TOBN(0x642da81a, 0xa23960f9)}},
+         {{TOBN(0x7d2e5c05, 0x4f7269b1), TOBN(0xfcf30777, 0xe287c385),
+           TOBN(0x10edc84f, 0xf2a46f21), TOBN(0x35441757, 0x4f43fa36)},
+          {TOBN(0xf1327899, 0xfd703431), TOBN(0xa438d7a6, 0x16dd587a),
+           TOBN(0x65c34c57, 0xe9c8352d), TOBN(0xa728edab, 0x5cc5a24e)}},
+         {{TOBN(0xaed78abc, 0x42531689), TOBN(0x0a51a0e8, 0x010963ef),
+           TOBN(0x5776fa0a, 0xd717d9b3), TOBN(0xf356c239, 0x7dd3428b)},
+          {TOBN(0x29903fff, 0x8d3a3dac), TOBN(0x409597fa, 0x3d94491f),
+           TOBN(0x4cd7a5ff, 0xbf4a56a4), TOBN(0xe5096474, 0x8adab462)}},
+         {{TOBN(0xa97b5126, 0x5c3427b0), TOBN(0x6401405c, 0xd282c9bd),
+           TOBN(0x3629f8d7, 0x222c5c45), TOBN(0xb1c02c16, 0xe8d50aed)},
+          {TOBN(0xbea2ed75, 0xd9635bc9), TOBN(0x226790c7, 0x6e24552f),
+           TOBN(0x3c33f2a3, 0x65f1d066), TOBN(0x2a43463e, 0x6dfccc2e)}},
+         {{TOBN(0x8cc3453a, 0xdb483761), TOBN(0xe7cc6085, 0x65d5672b),
+           TOBN(0x277ed6cb, 0xde3efc87), TOBN(0x19f2f368, 0x69234eaf)},
+          {TOBN(0x9aaf4317, 0x5c0b800b), TOBN(0x1f1e7c89, 0x8b6da6e2),
+           TOBN(0x6cfb4715, 0xb94ec75e), TOBN(0xd590dd5f, 0x453118c2)}},
+         {{TOBN(0x14e49da1, 0x1f17a34c), TOBN(0x5420ab39, 0x235a1456),
+           TOBN(0xb7637241, 0x2f50363b), TOBN(0x7b15d623, 0xc3fabb6e)},
+          {TOBN(0xa0ef40b1, 0xe274e49c), TOBN(0x5cf50744, 0x96b1860a),
+           TOBN(0xd6583fbf, 0x66afe5a4), TOBN(0x44240510, 0xf47e3e9a)}},
+         {{TOBN(0x99254343, 0x11b2d595), TOBN(0xf1367499, 0xeec8df57),
+           TOBN(0x3cb12c61, 0x3e73dd05), TOBN(0xd248c033, 0x7dac102a)},
+          {TOBN(0xcf154f13, 0xa77739f5), TOBN(0xbf4288cb, 0x23d2af42),
+           TOBN(0xaa64c9b6, 0x32e4a1cf), TOBN(0xee8c07a8, 0xc8a208f3)}},
+         {{TOBN(0xe10d4999, 0x6fe8393f), TOBN(0x0f809a3f, 0xe91f3a32),
+           TOBN(0x61096d1c, 0x802f63c8), TOBN(0x289e1462, 0x57750d3d)},
+          {TOBN(0xed06167e, 0x9889feea), TOBN(0xd5c9c0e2, 0xe0993909),
+           TOBN(0x46fca0d8, 0x56508ac6), TOBN(0x91826047, 0x4f1b8e83)}},
+         {{TOBN(0x4f2c877a, 0x9a4a2751), TOBN(0x71bd0072, 0xcae6fead),
+           TOBN(0x38df8dcc, 0x06aa1941), TOBN(0x5a074b4c, 0x63beeaa8)},
+          {TOBN(0xd6d65934, 0xc1cec8ed), TOBN(0xa6ecb49e, 0xaabc03bd),
+           TOBN(0xaade91c2, 0xde8a8415), TOBN(0xcfb0efdf, 0x691136e0)}},
+         {{TOBN(0x11af45ee, 0x23ab3495), TOBN(0xa132df88, 0x0b77463d),
+           TOBN(0x8923c15c, 0x815d06f4), TOBN(0xc3ceb3f5, 0x0d61a436)},
+          {TOBN(0xaf52291d, 0xe88fb1da), TOBN(0xea057974, 0x1da12179),
+           TOBN(0xb0d7218c, 0xd2fef720), TOBN(0x6c0899c9, 0x8e1d8845)}},
+         {{TOBN(0x98157504, 0x752ddad7), TOBN(0xd60bd74f, 0xa1a68a97),
+           TOBN(0x7047a3a9, 0xf658fb99), TOBN(0x1f5d86d6, 0x5f8511e4)},
+          {TOBN(0xb8a4bc42, 0x4b5a6d88), TOBN(0x69eb2c33, 0x1abefa7d),
+           TOBN(0x95bf39e8, 0x13c9c510), TOBN(0xf571960a, 0xd48aab43)}},
+         {{TOBN(0x7e8cfbcf, 0x704e23c6), TOBN(0xc71b7d22, 0x28aaa65b),
+           TOBN(0xa041b2bd, 0x245e3c83), TOBN(0x69b98834, 0xd21854ff)},
+          {TOBN(0x89d227a3, 0x963bfeec), TOBN(0x99947aaa, 0xde7da7cb),
+           TOBN(0x1d9ee9db, 0xee68a9b1), TOBN(0x0a08f003, 0x698ec368)}},
+         {{TOBN(0xe9ea4094, 0x78ef2487), TOBN(0xc8d2d415, 0x02cfec26),
+           TOBN(0xc52f9a6e, 0xb7dcf328), TOBN(0x0ed489e3, 0x85b6a937)},
+          {TOBN(0x9b94986b, 0xbef3366e), TOBN(0x0de59c70, 0xedddddb8),
+           TOBN(0xffdb748c, 0xeadddbe2), TOBN(0x9b9784bb, 0x8266ea40)}},
+         {{TOBN(0x142b5502, 0x1a93507a), TOBN(0xb4cd1187, 0x8d3c06cf),
+           TOBN(0xdf70e76a, 0x91ec3f40), TOBN(0x484e81ad, 0x4e7553c2)},
+          {TOBN(0x830f87b5, 0x272e9d6e), TOBN(0xea1c93e5, 0xc6ff514a),
+           TOBN(0x67cc2adc, 0xc4192a8e), TOBN(0xc77e27e2, 0x42f4535a)}},
+         {{TOBN(0x9cdbab36, 0xd2b713c5), TOBN(0x86274ea0, 0xcf7b0cd3),
+           TOBN(0x784680f3, 0x09af826b), TOBN(0xbfcc837a, 0x0c72dea3)},
+          {TOBN(0xa8bdfe9d, 0xd6529b73), TOBN(0x708aa228, 0x63a88002),
+           TOBN(0x6c7a9a54, 0xc91d45b9), TOBN(0xdf1a38bb, 0xfd004f56)}},
+         {{TOBN(0x2e8c9a26, 0xb8bad853), TOBN(0x2d52cea3, 0x3723eae7),
+           TOBN(0x054d6d81, 0x56ca2830), TOBN(0xa3317d14, 0x9a8dc411)},
+          {TOBN(0xa08662fe, 0xfd4ddeda), TOBN(0xed2a153a, 0xb55d792b),
+           TOBN(0x7035c16a, 0xbfc6e944), TOBN(0xb6bc5834, 0x00171cf3)}},
+         {{TOBN(0xe27152b3, 0x83d102b6), TOBN(0xfe695a47, 0x0646b848),
+           TOBN(0xa5bb09d8, 0x916e6d37), TOBN(0xb4269d64, 0x0d17015e)},
+          {TOBN(0x8d8156a1, 0x0a1d2285), TOBN(0xfeef6c51, 0x46d26d72),
+           TOBN(0x9dac57c8, 0x4c5434a7), TOBN(0x0282e5be, 0x59d39e31)}},
+         {{TOBN(0xedfff181, 0x721c486d), TOBN(0x301baf10, 0xbc58824e),
+           TOBN(0x8136a6aa, 0x00570031), TOBN(0x55aaf78c, 0x1cddde68)},
+          {TOBN(0x26829371, 0x59c63952), TOBN(0x3a3bd274, 0x8bc25baf),
+           TOBN(0xecdf8657, 0xb7e52dc3), TOBN(0x2dd8c087, 0xfd78e6c8)}},
+         {{TOBN(0x20553274, 0xf5531461), TOBN(0x8b4a1281, 0x5d95499b),
+           TOBN(0xe2c8763a, 0x1a80f9d2), TOBN(0xd1dbe32b, 0x4ddec758)},
+          {TOBN(0xaf12210d, 0x30c34169), TOBN(0xba74a953, 0x78baa533),
+           TOBN(0x3d133c6e, 0xa438f254), TOBN(0xa431531a, 0x201bef5b)}},
+         {{TOBN(0x15295e22, 0xf669d7ec), TOBN(0xca374f64, 0x357fb515),
+           TOBN(0x8a8406ff, 0xeaa3fdb3), TOBN(0x106ae448, 0xdf3f2da8)},
+          {TOBN(0x8f9b0a90, 0x33c8e9a1), TOBN(0x234645e2, 0x71ad5885),
+           TOBN(0x3d083224, 0x1c0aed14), TOBN(0xf10a7d3e, 0x7a942d46)}},
+         {{TOBN(0x7c11deee, 0x40d5c9be), TOBN(0xb2bae7ff, 0xba84ed98),
+           TOBN(0x93e97139, 0xaad58ddd), TOBN(0x3d872796, 0x3f6d1fa3)},
+          {TOBN(0x483aca81, 0x8569ff13), TOBN(0x8b89a5fb, 0x9a600f72),
+           TOBN(0x4cbc27c3, 0xc06f2b86), TOBN(0x22130713, 0x63ad9c0b)}},
+         {{TOBN(0xb5358b1e, 0x48ac2840), TOBN(0x18311294, 0xecba9477),
+           TOBN(0xda58f990, 0xa6946b43), TOBN(0x3098baf9, 0x9ab41819)},
+          {TOBN(0x66c4c158, 0x4198da52), TOBN(0xab4fc17c, 0x146bfd1b),
+           TOBN(0x2f0a4c3c, 0xbf36a908), TOBN(0x2ae9e34b, 0x58cf7838)}},
+         {{TOBN(0xf411529e, 0x3fa11b1f), TOBN(0x21e43677, 0x974af2b4),
+           TOBN(0x7c20958e, 0xc230793b), TOBN(0x710ea885, 0x16e840f3)},
+          {TOBN(0xfc0b21fc, 0xc5dc67cf), TOBN(0x08d51647, 0x88405718),
+           TOBN(0xd955c21f, 0xcfe49eb7), TOBN(0x9722a5d5, 0x56dd4a1f)}},
+         {{TOBN(0xc9ef50e2, 0xc861baa5), TOBN(0xc0c21a5d, 0x9505ac3e),
+           TOBN(0xaf6b9a33, 0x8b7c063f), TOBN(0xc6370339, 0x2f4779c1)},
+          {TOBN(0x22df99c7, 0x638167c3), TOBN(0xfe6ffe76, 0x795db30c),
+           TOBN(0x2b822d33, 0xa4854989), TOBN(0xfef031dd, 0x30563aa5)}},
+         {{TOBN(0x16b09f82, 0xd57c667f), TOBN(0xc70312ce, 0xcc0b76f1),
+           TOBN(0xbf04a9e6, 0xc9118aec), TOBN(0x82fcb419, 0x3409d133)},
+          {TOBN(0x1a8ab385, 0xab45d44d), TOBN(0xfba07222, 0x617b83a3),
+           TOBN(0xb05f50dd, 0x58e81b52), TOBN(0x1d8db553, 0x21ce5aff)}},
+         {{TOBN(0x3097b8d4, 0xe344a873), TOBN(0x7d8d116d, 0xfe36d53e),
+           TOBN(0x6db22f58, 0x7875e750), TOBN(0x2dc5e373, 0x43e144ea)},
+          {TOBN(0xc05f32e6, 0xe799eb95), TOBN(0xe9e5f4df, 0x6899e6ec),
+           TOBN(0xbdc3bd68, 0x1fab23d5), TOBN(0xb72b8ab7, 0x73af60e6)}},
+         {{TOBN(0x8db27ae0, 0x2cecc84a), TOBN(0x600016d8, 0x7bdb871c),
+           TOBN(0x42a44b13, 0xd7c46f58), TOBN(0xb8919727, 0xc3a77d39)},
+          {TOBN(0xcfc6bbbd, 0xdafd6088), TOBN(0x1a740146, 0x6bd20d39),
+           TOBN(0x8c747abd, 0x98c41072), TOBN(0x4c91e765, 0xbdf68ea1)}},
+         {{TOBN(0x7c95e5ca, 0x08819a78), TOBN(0xcf48b729, 0xc9587921),
+           TOBN(0x091c7c5f, 0xdebbcc7d), TOBN(0x6f287404, 0xf0e05149)},
+          {TOBN(0xf83b5ac2, 0x26cd44ec), TOBN(0x88ae32a6, 0xcfea250e),
+           TOBN(0x6ac5047a, 0x1d06ebc5), TOBN(0xc7e550b4, 0xd434f781)}},
+         {{TOBN(0x61ab1cf2, 0x5c727bd2), TOBN(0x2e4badb1, 0x1cf915b0),
+           TOBN(0x1b4dadec, 0xf69d3920), TOBN(0xe61b1ca6, 0xf14c1dfe)},
+          {TOBN(0x90b479cc, 0xbd6bd51f), TOBN(0x8024e401, 0x8045ec30),
+           TOBN(0xcab29ca3, 0x25ef0e62), TOBN(0x4f2e9416, 0x49e4ebc0)}},
+         {{TOBN(0x45eb40ec, 0x0ccced58), TOBN(0x25cd4b9c, 0x0da44f98),
+           TOBN(0x43e06458, 0x871812c6), TOBN(0x99f80d55, 0x16cef651)},
+          {TOBN(0x571340c9, 0xce6dc153), TOBN(0x138d5117, 0xd8665521),
+           TOBN(0xacdb45bc, 0x4e07014d), TOBN(0x2f34bb38, 0x84b60b91)}},
+         {{TOBN(0xf44a4fd2, 0x2ae8921e), TOBN(0xb039288e, 0x892ba1e2),
+           TOBN(0x9da50174, 0xb1c180b2), TOBN(0x6b70ab66, 0x1693dc87)},
+          {TOBN(0x7e9babc9, 0xe7057481), TOBN(0x4581ddef, 0x9c80dc41),
+           TOBN(0x0c890da9, 0x51294682), TOBN(0x0b5629d3, 0x3f4736e5)}},
+         {{TOBN(0x2340c79e, 0xb06f5b41), TOBN(0xa42e84ce, 0x4e243469),
+           TOBN(0xf9a20135, 0x045a71a9), TOBN(0xefbfb415, 0xd27b6fb6)},
+          {TOBN(0x25ebea23, 0x9d33cd6f), TOBN(0x9caedb88, 0xaa6c0af8),
+           TOBN(0x53dc7e9a, 0xd9ce6f96), TOBN(0x3897f9fd, 0x51e0b15a)}},
+         {{TOBN(0xf51cb1f8, 0x8e5d788e), TOBN(0x1aec7ba8, 0xe1d490ee),
+           TOBN(0x265991e0, 0xcc58cb3c), TOBN(0x9f306e8c, 0x9fc3ad31)},
+          {TOBN(0x5fed006e, 0x5040a0ac), TOBN(0xca9d5043, 0xfb476f2e),
+           TOBN(0xa19c06e8, 0xbeea7a23), TOBN(0xd2865801, 0x0edabb63)}},
+         {{TOBN(0xdb92293f, 0x6967469a), TOBN(0x2894d839, 0x8d8a8ed8),
+           TOBN(0x87c9e406, 0xbbc77122), TOBN(0x8671c6f1, 0x2ea3a26a)},
+          {TOBN(0xe42df8d6, 0xd7de9853), TOBN(0x2e3ce346, 0xb1f2bcc7),
+           TOBN(0xda601dfc, 0x899d50cf), TOBN(0xbfc913de, 0xfb1b598f)}},
+         {{TOBN(0x81c4909f, 0xe61f7908), TOBN(0x192e304f, 0x9bbc7b29),
+           TOBN(0xc3ed8738, 0xc104b338), TOBN(0xedbe9e47, 0x783f5d61)},
+          {TOBN(0x0c06e9be, 0x2db30660), TOBN(0xda3e613f, 0xc0eb7d8e),
+           TOBN(0xd8fa3e97, 0x322e096e), TOBN(0xfebd91e8, 0xd336e247)}},
+         {{TOBN(0x8f13ccc4, 0xdf655a49), TOBN(0xa9e00dfc, 0x5eb20210),
+           TOBN(0x84631d0f, 0xc656b6ea), TOBN(0x93a058cd, 0xd8c0d947)},
+          {TOBN(0x6846904a, 0x67bd3448), TOBN(0x4a3d4e1a, 0xf394fd5c),
+           TOBN(0xc102c1a5, 0xdb225f52), TOBN(0xe3455bba, 0xfc4f5e9a)}},
+         {{TOBN(0x6b36985b, 0x4b9ad1ce), TOBN(0xa9818536, 0x5bb7f793),
+           TOBN(0x6c25e1d0, 0x48b1a416), TOBN(0x1381dd53, 0x3c81bee7)},
+          {TOBN(0xd2a30d61, 0x7a4a7620), TOBN(0xc8412926, 0x39b8944c),
+           TOBN(0x3c1c6fbe, 0x7a97c33a), TOBN(0x941e541d, 0x938664e7)}},
+         {{TOBN(0x417499e8, 0x4a34f239), TOBN(0x15fdb83c, 0xb90402d5),
+           TOBN(0xb75f46bf, 0x433aa832), TOBN(0xb61e15af, 0x63215db1)},
+          {TOBN(0xaabe59d4, 0xa127f89a), TOBN(0x5d541e0c, 0x07e816da),
+           TOBN(0xaaba0659, 0xa618b692), TOBN(0x55327733, 0x17266026)}},
+         {{TOBN(0xaf53a0fc, 0x95f57552), TOBN(0x32947650, 0x6cacb0c9),
+           TOBN(0x253ff58d, 0xc821be01), TOBN(0xb0309531, 0xa06f1146)},
+          {TOBN(0x59bbbdf5, 0x05c2e54d), TOBN(0x158f27ad, 0x26e8dd22),
+           TOBN(0xcc5b7ffb, 0x397e1e53), TOBN(0xae03f65b, 0x7fc1e50d)}},
+         {{TOBN(0xa9784ebd, 0x9c95f0f9), TOBN(0x5ed9deb2, 0x24640771),
+           TOBN(0x31244af7, 0x035561c4), TOBN(0x87332f3a, 0x7ee857de)},
+          {TOBN(0x09e16e9e, 0x2b9e0d88), TOBN(0x52d910f4, 0x56a06049),
+           TOBN(0x507ed477, 0xa9592f48), TOBN(0x85cb917b, 0x2365d678)}},
+         {{TOBN(0xf8511c93, 0x4c8998d1), TOBN(0x2186a3f1, 0x730ea58f),
+           TOBN(0x50189626, 0xb2029db0), TOBN(0x9137a6d9, 0x02ceb75a)},
+          {TOBN(0x2fe17f37, 0x748bc82c), TOBN(0x87c2e931, 0x80469f8c),
+           TOBN(0x850f71cd, 0xbf891aa2), TOBN(0x0ca1b89b, 0x75ec3d8d)}},
+         {{TOBN(0x516c43aa, 0x5e1cd3cd), TOBN(0x89397808, 0x9a887c28),
+           TOBN(0x0059c699, 0xddea1f9f), TOBN(0x7737d6fa, 0x8e6868f7)},
+          {TOBN(0x6d93746a, 0x60f1524b), TOBN(0x36985e55, 0xba052aa7),
+           TOBN(0x41b1d322, 0xed923ea5), TOBN(0x3429759f, 0x25852a11)}},
+         {{TOBN(0xbeca6ec3, 0x092e9f41), TOBN(0x3a238c66, 0x62256bbd),
+           TOBN(0xd82958ea, 0x70ad487d), TOBN(0x4ac8aaf9, 0x65610d93)},
+          {TOBN(0x3fa101b1, 0x5e4ccab0), TOBN(0x9bf430f2, 0x9de14bfb),
+           TOBN(0xa10f5cc6, 0x6531899d), TOBN(0x590005fb, 0xea8ce17d)}},
+         {{TOBN(0xc437912f, 0x24544cb6), TOBN(0x9987b71a, 0xd79ac2e3),
+           TOBN(0x13e3d9dd, 0xc058a212), TOBN(0x00075aac, 0xd2de9606)},
+          {TOBN(0x80ab508b, 0x6cac8369), TOBN(0x87842be7, 0xf54f6c89),
+           TOBN(0xa7ad663d, 0x6bc532a4), TOBN(0x67813de7, 0x78a91bc8)}},
+         {{TOBN(0x5dcb61ce, 0xc3427239), TOBN(0x5f3c7cf0, 0xc56934d9),
+           TOBN(0xc079e0fb, 0xe3191591), TOBN(0xe40896bd, 0xb01aada7)},
+          {TOBN(0x8d466791, 0x0492d25f), TOBN(0x8aeb30c9, 0xe7408276),
+           TOBN(0xe9437495, 0x9287aacc), TOBN(0x23d4708d, 0x79fe03d4)}},
+         {{TOBN(0x8cda9cf2, 0xd0c05199), TOBN(0x502fbc22, 0xfae78454),
+           TOBN(0xc0bda9df, 0xf572a182), TOBN(0x5f9b71b8, 0x6158b372)},
+          {TOBN(0xe0f33a59, 0x2b82dd07), TOBN(0x76302735, 0x9523032e),
+           TOBN(0x7fe1a721, 0xc4505a32), TOBN(0x7b6e3e82, 0xf796409f)}}},
+        {{{TOBN(0xe3417bc0, 0x35d0b34a), TOBN(0x440b386b, 0x8327c0a7),
+           TOBN(0x8fb7262d, 0xac0362d1), TOBN(0x2c41114c, 0xe0cdf943)},
+          {TOBN(0x2ba5cef1, 0xad95a0b1), TOBN(0xc09b37a8, 0x67d54362),
+           TOBN(0x26d6cdd2, 0x01e486c9), TOBN(0x20477abf, 0x42ff9297)}},
+         {{TOBN(0xa004dcb3, 0x292a9287), TOBN(0xddc15cf6, 0x77b092c7),
+           TOBN(0x083a8464, 0x806c0605), TOBN(0x4a68df70, 0x3db997b0)},
+          {TOBN(0x9c134e45, 0x05bf7dd0), TOBN(0xa4e63d39, 0x8ccf7f8c),
+           TOBN(0xa6e6517f, 0x41b5f8af), TOBN(0xaa8b9342, 0xad7bc1cc)}},
+         {{TOBN(0x126f35b5, 0x1e706ad9), TOBN(0xb99cebb4, 0xc3a9ebdf),
+           TOBN(0xa75389af, 0xbf608d90), TOBN(0x76113c4f, 0xc6c89858)},
+          {TOBN(0x80de8eb0, 0x97e2b5aa), TOBN(0x7e1022cc, 0x63b91304),
+           TOBN(0x3bdab605, 0x6ccc066c), TOBN(0x33cbb144, 0xb2edf900)}},
+         {{TOBN(0xc4176471, 0x7af715d2), TOBN(0xe2f7f594, 0xd0134a96),
+           TOBN(0x2c1873ef, 0xa41ec956), TOBN(0xe4e7b4f6, 0x77821304)},
+          {TOBN(0xe5c8ff97, 0x88d5374a), TOBN(0x2b915e63, 0x80823d5b),
+           TOBN(0xea6bc755, 0xb2ee8fe2), TOBN(0x6657624c, 0xe7112651)}},
+         {{TOBN(0x157af101, 0xdace5aca), TOBN(0xc4fdbcf2, 0x11a6a267),
+           TOBN(0xdaddf340, 0xc49c8609), TOBN(0x97e49f52, 0xe9604a65)},
+          {TOBN(0x9be8e790, 0x937e2ad5), TOBN(0x846e2508, 0x326e17f1),
+           TOBN(0x3f38007a, 0x0bbbc0dc), TOBN(0xcf03603f, 0xb11e16d6)}},
+         {{TOBN(0xd6f800e0, 0x7442f1d5), TOBN(0x475607d1, 0x66e0e3ab),
+           TOBN(0x82807f16, 0xb7c64047), TOBN(0x8858e1e3, 0xa749883d)},
+          {TOBN(0x5859120b, 0x8231ee10), TOBN(0x1b80e7eb, 0x638a1ece),
+           TOBN(0xcb72525a, 0xc6aa73a4), TOBN(0xa7cdea3d, 0x844423ac)}},
+         {{TOBN(0x5ed0c007, 0xf8ae7c38), TOBN(0x6db07a5c, 0x3d740192),
+           TOBN(0xbe5e9c2a, 0x5fe36db3), TOBN(0xd5b9d57a, 0x76e95046)},
+          {TOBN(0x54ac32e7, 0x8eba20f2), TOBN(0xef11ca8f, 0x71b9a352),
+           TOBN(0x305e373e, 0xff98a658), TOBN(0xffe5a100, 0x823eb667)}},
+         {{TOBN(0x57477b11, 0xe51732d2), TOBN(0xdfd6eb28, 0x2538fc0e),
+           TOBN(0x5c43b0cc, 0x3b39eec5), TOBN(0x6af12778, 0xcb36cc57)},
+          {TOBN(0x70b0852d, 0x06c425ae), TOBN(0x6df92f8c, 0x5c221b9b),
+           TOBN(0x6c8d4f9e, 0xce826d9c), TOBN(0xf59aba7b, 0xb49359c3)}},
+         {{TOBN(0x5c8ed8d5, 0xda64309d), TOBN(0x61a6de56, 0x91b30704),
+           TOBN(0xd6b52f6a, 0x2f9b5808), TOBN(0x0eee4194, 0x98c958a7)},
+          {TOBN(0xcddd9aab, 0x771e4caa), TOBN(0x83965dfd, 0x78bc21be),
+           TOBN(0x02affce3, 0xb3b504f5), TOBN(0x30847a21, 0x561c8291)}},
+         {{TOBN(0xd2eb2cf1, 0x52bfda05), TOBN(0xe0e4c4e9, 0x6197b98c),
+           TOBN(0x1d35076c, 0xf8a1726f), TOBN(0x6c06085b, 0x2db11e3d)},
+          {TOBN(0x15c0c4d7, 0x4463ba14), TOBN(0x9d292f83, 0x0030238c),
+           TOBN(0x1311ee8b, 0x3727536d), TOBN(0xfeea86ef, 0xbeaedc1e)}},
+         {{TOBN(0xb9d18cd3, 0x66131e2e), TOBN(0xf31d974f, 0x80fe2682),
+           TOBN(0xb6e49e0f, 0xe4160289), TOBN(0x7c48ec0b, 0x08e92799)},
+          {TOBN(0x818111d8, 0xd1989aa7), TOBN(0xb34fa0aa, 0xebf926f9),
+           TOBN(0xdb5fe2f5, 0xa245474a), TOBN(0xf80a6ebb, 0x3c7ca756)}},
+         {{TOBN(0xa7f96054, 0xafa05dd8), TOBN(0x26dfcf21, 0xfcaf119e),
+           TOBN(0xe20ef2e3, 0x0564bb59), TOBN(0xef4dca50, 0x61cb02b8)},
+          {TOBN(0xcda7838a, 0x65d30672), TOBN(0x8b08d534, 0xfd657e86),
+           TOBN(0x4c5b4395, 0x46d595c8), TOBN(0x39b58725, 0x425cb836)}},
+         {{TOBN(0x8ea61059, 0x3de9abe3), TOBN(0x40434881, 0x9cdc03be),
+           TOBN(0x9b261245, 0xcfedce8c), TOBN(0x78c318b4, 0xcf5234a1)},
+          {TOBN(0x510bcf16, 0xfde24c99), TOBN(0x2a77cb75, 0xa2c2ff5d),
+           TOBN(0x9c895c2b, 0x27960fb4), TOBN(0xd30ce975, 0xb0eda42b)}},
+         {{TOBN(0xfda85393, 0x1a62cc26), TOBN(0x23c69b96, 0x50c0e052),
+           TOBN(0xa227df15, 0xbfc633f3), TOBN(0x2ac78848, 0x1bae7d48)},
+          {TOBN(0x487878f9, 0x187d073d), TOBN(0x6c2be919, 0x967f807d),
+           TOBN(0x765861d8, 0x336e6d8f), TOBN(0x88b8974c, 0xce528a43)}},
+         {{TOBN(0x09521177, 0xff57d051), TOBN(0x2ff38037, 0xfb6a1961),
+           TOBN(0xfc0aba74, 0xa3d76ad4), TOBN(0x7c764803, 0x25a7ec17)},
+          {TOBN(0x7532d75f, 0x48879bc8), TOBN(0xea7eacc0, 0x58ce6bc1),
+           TOBN(0xc82176b4, 0x8e896c16), TOBN(0x9a30e0b2, 0x2c750fed)}},
+         {{TOBN(0xc37e2c2e, 0x421d3aa4), TOBN(0xf926407c, 0xe84fa840),
+           TOBN(0x18abc03d, 0x1454e41c), TOBN(0x26605ecd, 0x3f7af644)},
+          {TOBN(0x242341a6, 0xd6a5eabf), TOBN(0x1edb84f4, 0x216b668e),
+           TOBN(0xd836edb8, 0x04010102), TOBN(0x5b337ce7, 0x945e1d8c)}},
+         {{TOBN(0xd2075c77, 0xc055dc14), TOBN(0x2a0ffa25, 0x81d89cdf),
+           TOBN(0x8ce815ea, 0x6ffdcbaf), TOBN(0xa3428878, 0xfb648867)},
+          {TOBN(0x277699cf, 0x884655fb), TOBN(0xfa5b5bd6, 0x364d3e41),
+           TOBN(0x01f680c6, 0x441e1cb7), TOBN(0x3fd61e66, 0xb70a7d67)}},
+         {{TOBN(0x666ba2dc, 0xcc78cf66), TOBN(0xb3018174, 0x6fdbff77),
+           TOBN(0x8d4dd0db, 0x168d4668), TOBN(0x259455d0, 0x1dab3a2a)},
+          {TOBN(0xf58564c5, 0xcde3acec), TOBN(0x77141925, 0x13adb276),
+           TOBN(0x527d725d, 0x8a303f65), TOBN(0x55deb6c9, 0xe6f38f7b)}},
+         {{TOBN(0xfd5bb657, 0xb1fa70fb), TOBN(0xfa07f50f, 0xd8073a00),
+           TOBN(0xf72e3aa7, 0xbca02500), TOBN(0xf68f895d, 0x9975740d)},
+          {TOBN(0x30112060, 0x5cae2a6a), TOBN(0x01bd7218, 0x02874842),
+           TOBN(0x3d423891, 0x7ce47bd3), TOBN(0xa66663c1, 0x789544f6)}},
+         {{TOBN(0x864d05d7, 0x3272d838), TOBN(0xe22924f9, 0xfa6295c5),
+           TOBN(0x8189593f, 0x6c2fda32), TOBN(0x330d7189, 0xb184b544)},
+          {TOBN(0x79efa62c, 0xbde1f714), TOBN(0x35771c94, 0xe5cb1a63),
+           TOBN(0x2f4826b8, 0x641c8332), TOBN(0x00a894fb, 0xc8cee854)}},
+         {{TOBN(0xb4b9a39b, 0x36194d40), TOBN(0xe857a7c5, 0x77612601),
+           TOBN(0xf4209dd2, 0x4ecf2f58), TOBN(0x82b9e66d, 0x5a033487)},
+          {TOBN(0xc1e36934, 0xe4e8b9dd), TOBN(0xd2372c9d, 0xa42377d7),
+           TOBN(0x51dc94c7, 0x0e3ae43b), TOBN(0x4c57761e, 0x04474f6f)}},
+         {{TOBN(0xdcdacd0a, 0x1058a318), TOBN(0x369cf3f5, 0x78053a9a),
+           TOBN(0xc6c3de50, 0x31c68de2), TOBN(0x4653a576, 0x3c4b6d9f)},
+          {TOBN(0x1688dd5a, 0xaa4e5c97), TOBN(0x5be80aa1, 0xb7ab3c74),
+           TOBN(0x70cefe7c, 0xbc65c283), TOBN(0x57f95f13, 0x06867091)}},
+         {{TOBN(0xa39114e2, 0x4415503b), TOBN(0xc08ff7c6, 0x4cbb17e9),
+           TOBN(0x1eff674d, 0xd7dec966), TOBN(0x6d4690af, 0x53376f63)},
+          {TOBN(0xff6fe32e, 0xea74237b), TOBN(0xc436d17e, 0xcd57508e),
+           TOBN(0x15aa28e1, 0xedcc40fe), TOBN(0x0d769c04, 0x581bbb44)}},
+         {{TOBN(0xc240b6de, 0x34eaacda), TOBN(0xd9e116e8, 0x2ba0f1de),
+           TOBN(0xcbe45ec7, 0x79438e55), TOBN(0x91787c9d, 0x96f752d7)},
+          {TOBN(0x897f532b, 0xf129ac2f), TOBN(0xd307b7c8, 0x5a36e22c),
+           TOBN(0x91940675, 0x749fb8f3), TOBN(0xd14f95d0, 0x157fdb28)}},
+         {{TOBN(0xfe51d029, 0x6ae55043), TOBN(0x8931e98f, 0x44a87de1),
+           TOBN(0xe57f1cc6, 0x09e4fee2), TOBN(0x0d063b67, 0x4e072d92)},
+          {TOBN(0x70a998b9, 0xed0e4316), TOBN(0xe74a736b, 0x306aca46),
+           TOBN(0xecf0fbf2, 0x4fda97c7), TOBN(0xa40f65cb, 0x3e178d93)}},
+         {{TOBN(0x16253604, 0x16df4285), TOBN(0xb0c9babb, 0xd0c56ae2),
+           TOBN(0x73032b19, 0xcfc5cfc3), TOBN(0xe497e5c3, 0x09752056)},
+          {TOBN(0x12096bb4, 0x164bda96), TOBN(0x1ee42419, 0xa0b74da1),
+           TOBN(0x8fc36243, 0x403826ba), TOBN(0x0c8f0069, 0xdc09e660)}},
+         {{TOBN(0x8667e981, 0xc27253c9), TOBN(0x05a6aefb, 0x92b36a45),
+           TOBN(0xa62c4b36, 0x9cb7bb46), TOBN(0x8394f375, 0x11f7027b)},
+          {TOBN(0x747bc79c, 0x5f109d0f), TOBN(0xcad88a76, 0x5b8cc60a),
+           TOBN(0x80c5a66b, 0x58f09e68), TOBN(0xe753d451, 0xf6127eac)}},
+         {{TOBN(0xc44b74a1, 0x5b0ec6f5), TOBN(0x47989fe4, 0x5289b2b8),
+           TOBN(0x745f8484, 0x58d6fc73), TOBN(0xec362a6f, 0xf61c70ab)},
+          {TOBN(0x070c98a7, 0xb3a8ad41), TOBN(0x73a20fc0, 0x7b63db51),
+           TOBN(0xed2c2173, 0xf44c35f4), TOBN(0x8a56149d, 0x9acc9dca)}},
+         {{TOBN(0x98f17881, 0x9ac6e0f4), TOBN(0x360fdeaf, 0xa413b5ed),
+           TOBN(0x0625b8f4, 0xa300b0fd), TOBN(0xf1f4d76a, 0x5b3222d3)},
+          {TOBN(0x9d6f5109, 0x587f76b8), TOBN(0x8b4ee08d, 0x2317fdb5),
+           TOBN(0x88089bb7, 0x8c68b095), TOBN(0x95570e9a, 0x5808d9b9)}},
+         {{TOBN(0xa395c36f, 0x35d33ae7), TOBN(0x200ea123, 0x50bb5a94),
+           TOBN(0x20c789bd, 0x0bafe84b), TOBN(0x243ef52d, 0x0919276a)},
+          {TOBN(0x3934c577, 0xe23ae233), TOBN(0xb93807af, 0xa460d1ec),
+           TOBN(0xb72a53b1, 0xf8fa76a4), TOBN(0xd8914cb0, 0xc3ca4491)}},
+         {{TOBN(0x2e128494, 0x3fb42622), TOBN(0x3b2700ac, 0x500907d5),
+           TOBN(0xf370fb09, 0x1a95ec63), TOBN(0xf8f30be2, 0x31b6dfbd)},
+          {TOBN(0xf2b2f8d2, 0x69e55f15), TOBN(0x1fead851, 0xcc1323e9),
+           TOBN(0xfa366010, 0xd9e5eef6), TOBN(0x64d487b0, 0xe316107e)}},
+         {{TOBN(0x4c076b86, 0xd23ddc82), TOBN(0x03fd344c, 0x7e0143f0),
+           TOBN(0xa95362ff, 0x317af2c5), TOBN(0x0add3db7, 0xe18b7a4f)},
+          {TOBN(0x9c673e3f, 0x8260e01b), TOBN(0xfbeb49e5, 0x54a1cc91),
+           TOBN(0x91351bf2, 0x92f2e433), TOBN(0xc755e7ec, 0x851141eb)}},
+         {{TOBN(0xc9a95139, 0x29607745), TOBN(0x0ca07420, 0xa26f2b28),
+           TOBN(0xcb2790e7, 0x4bc6f9dd), TOBN(0x345bbb58, 0xadcaffc0)},
+          {TOBN(0xc65ea38c, 0xbe0f27a2), TOBN(0x67c24d7c, 0x641fcb56),
+           TOBN(0x2c25f0a7, 0xa9e2c757), TOBN(0x93f5cdb0, 0x16f16c49)}},
+         {{TOBN(0x2ca5a9d7, 0xc5ee30a1), TOBN(0xd1593635, 0xb909b729),
+           TOBN(0x804ce9f3, 0xdadeff48), TOBN(0xec464751, 0xb07c30c3)},
+          {TOBN(0x89d65ff3, 0x9e49af6a), TOBN(0xf2d6238a, 0x6f3d01bc),
+           TOBN(0x1095561e, 0x0bced843), TOBN(0x51789e12, 0xc8a13fd8)}},
+         {{TOBN(0xd633f929, 0x763231df), TOBN(0x46df9f7d, 0xe7cbddef),
+           TOBN(0x01c889c0, 0xcb265da8), TOBN(0xfce1ad10, 0xaf4336d2)},
+          {TOBN(0x8d110df6, 0xfc6a0a7e), TOBN(0xdd431b98, 0x6da425dc),
+           TOBN(0xcdc4aeab, 0x1834aabe), TOBN(0x84deb124, 0x8439b7fc)}},
+         {{TOBN(0x8796f169, 0x3c2a5998), TOBN(0x9b9247b4, 0x7947190d),
+           TOBN(0x55b9d9a5, 0x11597014), TOBN(0x7e9dd70d, 0x7b1566ee)},
+          {TOBN(0x94ad78f7, 0xcbcd5e64), TOBN(0x0359ac17, 0x9bd4c032),
+           TOBN(0x3b11baaf, 0x7cc222ae), TOBN(0xa6a6e284, 0xba78e812)}},
+         {{TOBN(0x8392053f, 0x24cea1a0), TOBN(0xc97bce4a, 0x33621491),
+           TOBN(0x7eb1db34, 0x35399ee9), TOBN(0x473f78ef, 0xece81ad1)},
+          {TOBN(0x41d72fe0, 0xf63d3d0d), TOBN(0xe620b880, 0xafab62fc),
+           TOBN(0x92096bc9, 0x93158383), TOBN(0x41a21357, 0x8f896f6c)}},
+         {{TOBN(0x1b5ee2fa, 0xc7dcfcab), TOBN(0x650acfde, 0x9546e007),
+           TOBN(0xc081b749, 0xb1b02e07), TOBN(0xda9e41a0, 0xf9eca03d)},
+          {TOBN(0x013ba727, 0x175a54ab), TOBN(0xca0cd190, 0xea5d8d10),
+           TOBN(0x85ea52c0, 0x95fd96a9), TOBN(0x2c591b9f, 0xbc5c3940)}},
+         {{TOBN(0x6fb4d4e4, 0x2bad4d5f), TOBN(0xfa4c3590, 0xfef0059b),
+           TOBN(0x6a10218a, 0xf5122294), TOBN(0x9a78a81a, 0xa85751d1)},
+          {TOBN(0x04f20579, 0xa98e84e7), TOBN(0xfe1242c0, 0x4997e5b5),
+           TOBN(0xe77a273b, 0xca21e1e4), TOBN(0xfcc8b1ef, 0x9411939d)}},
+         {{TOBN(0xe20ea302, 0x92d0487a), TOBN(0x1442dbec, 0x294b91fe),
+           TOBN(0x1f7a4afe, 0xbb6b0e8f), TOBN(0x1700ef74, 0x6889c318)},
+          {TOBN(0xf5bbffc3, 0x70f1fc62), TOBN(0x3b31d4b6, 0x69c79cca),
+           TOBN(0xe8bc2aab, 0xa7f6340d), TOBN(0xb0b08ab4, 0xa725e10a)}},
+         {{TOBN(0x44f05701, 0xae340050), TOBN(0xba4b3016, 0x1cf0c569),
+           TOBN(0x5aa29f83, 0xfbe19a51), TOBN(0x1b9ed428, 0xb71d752e)},
+          {TOBN(0x1666e54e, 0xeb4819f5), TOBN(0x616cdfed, 0x9e18b75b),
+           TOBN(0x112ed5be, 0x3ee27b0b), TOBN(0xfbf28319, 0x44c7de4d)}},
+         {{TOBN(0xd685ec85, 0xe0e60d84), TOBN(0x68037e30, 0x1db7ee78),
+           TOBN(0x5b65bdcd, 0x003c4d6e), TOBN(0x33e7363a, 0x93e29a6a)},
+          {TOBN(0x995b3a61, 0x08d0756c), TOBN(0xd727f85c, 0x2faf134b),
+           TOBN(0xfac6edf7, 0x1d337823), TOBN(0x99b9aa50, 0x0439b8b4)}},
+         {{TOBN(0x722eb104, 0xe2b4e075), TOBN(0x49987295, 0x437c4926),
+           TOBN(0xb1e4c0e4, 0x46a9b82d), TOBN(0xd0cb3197, 0x57a006f5)},
+          {TOBN(0xf3de0f7d, 0xd7808c56), TOBN(0xb5c54d8f, 0x51f89772),
+           TOBN(0x500a114a, 0xadbd31aa), TOBN(0x9afaaaa6, 0x295f6cab)}},
+         {{TOBN(0x94705e21, 0x04cf667a), TOBN(0xfc2a811b, 0x9d3935d7),
+           TOBN(0x560b0280, 0x6d09267c), TOBN(0xf19ed119, 0xf780e53b)},
+          {TOBN(0xf0227c09, 0x067b6269), TOBN(0x967b8533, 0x5caef599),
+           TOBN(0x155b9243, 0x68efeebc), TOBN(0xcd6d34f5, 0xc497bae6)}},
+         {{TOBN(0x1dd8d5d3, 0x6cceb370), TOBN(0x2aeac579, 0xa78d7bf9),
+           TOBN(0x5d65017d, 0x70b67a62), TOBN(0x70c8e44f, 0x17c53f67)},
+          {TOBN(0xd1fc0950, 0x86a34d09), TOBN(0xe0fca256, 0xe7134907),
+           TOBN(0xe24fa29c, 0x80fdd315), TOBN(0x2c4acd03, 0xd87499ad)}},
+         {{TOBN(0xbaaf7517, 0x3b5a9ba6), TOBN(0xb9cbe1f6, 0x12e51a51),
+           TOBN(0xd88edae3, 0x5e154897), TOBN(0xe4309c3c, 0x77b66ca0)},
+          {TOBN(0xf5555805, 0xf67f3746), TOBN(0x85fc37ba, 0xa36401ff),
+           TOBN(0xdf86e2ca, 0xd9499a53), TOBN(0x6270b2a3, 0xecbc955b)}},
+         {{TOBN(0xafae64f5, 0x974ad33b), TOBN(0x04d85977, 0xfe7b2df1),
+           TOBN(0x2a3db3ff, 0x4ab03f73), TOBN(0x0b87878a, 0x8702740a)},
+          {TOBN(0x6d263f01, 0x5a061732), TOBN(0xc25430ce, 0xa32a1901),
+           TOBN(0xf7ebab3d, 0xdb155018), TOBN(0x3a86f693, 0x63a9b78e)}},
+         {{TOBN(0x349ae368, 0xda9f3804), TOBN(0x470f07fe, 0xa164349c),
+           TOBN(0xd52f4cc9, 0x8562baa5), TOBN(0xc74a9e86, 0x2b290df3)},
+          {TOBN(0xd3a1aa35, 0x43471a24), TOBN(0x239446be, 0xb8194511),
+           TOBN(0xbec2dd00, 0x81dcd44d), TOBN(0xca3d7f0f, 0xc42ac82d)}},
+         {{TOBN(0x1f3db085, 0xfdaf4520), TOBN(0xbb6d3e80, 0x4549daf2),
+           TOBN(0xf5969d8a, 0x19ad5c42), TOBN(0x7052b13d, 0xdbfd1511)},
+          {TOBN(0x11890d1b, 0x682b9060), TOBN(0xa71d3883, 0xac34452c),
+           TOBN(0xa438055b, 0x783805b4), TOBN(0x43241277, 0x4725b23e)}},
+         {{TOBN(0xf20cf96e, 0x4901bbed), TOBN(0x6419c710, 0xf432a2bb),
+           TOBN(0x57a0fbb9, 0xdfa9cd7d), TOBN(0x589111e4, 0x00daa249)},
+          {TOBN(0x19809a33, 0x7b60554e), TOBN(0xea5f8887, 0xede283a4),
+           TOBN(0x2d713802, 0x503bfd35), TOBN(0x151bb0af, 0x585d2a53)}},
+         {{TOBN(0x40b08f74, 0x43b30ca8), TOBN(0xe10b5bba, 0xd9934583),
+           TOBN(0xe8a546d6, 0xb51110ad), TOBN(0x1dd50e66, 0x28e0b6c5)},
+          {TOBN(0x292e9d54, 0xcff2b821), TOBN(0x3882555d, 0x47281760),
+           TOBN(0x134838f8, 0x3724d6e3), TOBN(0xf2c679e0, 0x22ddcda1)}},
+         {{TOBN(0x40ee8815, 0x6d2a5768), TOBN(0x7f227bd2, 0x1c1e7e2d),
+           TOBN(0x487ba134, 0xd04ff443), TOBN(0x76e2ff3d, 0xc614e54b)},
+          {TOBN(0x36b88d6f, 0xa3177ec7), TOBN(0xbf731d51, 0x2328fff5),
+           TOBN(0x758caea2, 0x49ba158e), TOBN(0x5ab8ff4c, 0x02938188)}},
+         {{TOBN(0x33e16056, 0x35edc56d), TOBN(0x5a69d349, 0x7e940d79),
+           TOBN(0x6c4fd001, 0x03866dcb), TOBN(0x20a38f57, 0x4893cdef)},
+          {TOBN(0xfbf3e790, 0xfac3a15b), TOBN(0x6ed7ea2e, 0x7a4f8e6b),
+           TOBN(0xa663eb4f, 0xbc3aca86), TOBN(0x22061ea5, 0x080d53f7)}},
+         {{TOBN(0x2480dfe6, 0xf546783f), TOBN(0xd38bc6da, 0x5a0a641e),
+           TOBN(0xfb093cd1, 0x2ede8965), TOBN(0x89654db4, 0xacb455cf)},
+          {TOBN(0x413cbf9a, 0x26e1adee), TOBN(0x291f3764, 0x373294d4),
+           TOBN(0x00797257, 0x648083fe), TOBN(0x25f504d3, 0x208cc341)}},
+         {{TOBN(0x635a8e5e, 0xc3a0ee43), TOBN(0x70aaebca, 0x679898ff),
+           TOBN(0x9ee9f547, 0x5dc63d56), TOBN(0xce987966, 0xffb34d00)},
+          {TOBN(0xf9f86b19, 0x5e26310a), TOBN(0x9e435484, 0x382a8ca8),
+           TOBN(0x253bcb81, 0xc2352fe4), TOBN(0xa4eac8b0, 0x4474b571)}},
+         {{TOBN(0xc1b97512, 0xc1ad8cf8), TOBN(0x193b4e9e, 0x99e0b697),
+           TOBN(0x939d2716, 0x01e85df0), TOBN(0x4fb265b3, 0xcd44eafd)},
+          {TOBN(0x321e7dcd, 0xe51e1ae2), TOBN(0x8e3a8ca6, 0xe3d8b096),
+           TOBN(0x8de46cb0, 0x52604998), TOBN(0x91099ad8, 0x39072aa7)}},
+         {{TOBN(0x2617f91c, 0x93aa96b8), TOBN(0x0fc8716b, 0x7fca2e13),
+           TOBN(0xa7106f5e, 0x95328723), TOBN(0xd1c9c40b, 0x262e6522)},
+          {TOBN(0xb9bafe86, 0x42b7c094), TOBN(0x1873439d, 0x1543c021),
+           TOBN(0xe1baa5de, 0x5cbefd5d), TOBN(0xa363fc5e, 0x521e8aff)}},
+         {{TOBN(0xefe6320d, 0xf862eaac), TOBN(0x14419c63, 0x22c647dc),
+           TOBN(0x0e06707c, 0x4e46d428), TOBN(0xcb6c834f, 0x4a178f8f)},
+          {TOBN(0x0f993a45, 0xd30f917c), TOBN(0xd4c4b049, 0x9879afee),
+           TOBN(0xb6142a1e, 0x70500063), TOBN(0x7c9b41c3, 0xa5d9d605)}},
+         {{TOBN(0xbc00fc2f, 0x2f8ba2c7), TOBN(0x0966eb2f, 0x7c67aa28),
+           TOBN(0x13f7b516, 0x5a786972), TOBN(0x3bfb7557, 0x8a2fbba0)},
+          {TOBN(0x131c4f23, 0x5a2b9620), TOBN(0xbff3ed27, 0x6faf46be),
+           TOBN(0x9b4473d1, 0x7e172323), TOBN(0x421e8878, 0x339f6246)}},
+         {{TOBN(0x0fa8587a, 0x25a41632), TOBN(0xc0814124, 0xa35b6c93),
+           TOBN(0x2b18a9f5, 0x59ebb8db), TOBN(0x264e3357, 0x76edb29c)},
+          {TOBN(0xaf245ccd, 0xc87c51e2), TOBN(0x16b3015b, 0x501e6214),
+           TOBN(0xbb31c560, 0x0a3882ce), TOBN(0x6961bb94, 0xfec11e04)}},
+         {{TOBN(0x3b825b8d, 0xeff7a3a0), TOBN(0xbec33738, 0xb1df7326),
+           TOBN(0x68ad747c, 0x99604a1f), TOBN(0xd154c934, 0x9a3bd499)},
+          {TOBN(0xac33506f, 0x1cc7a906), TOBN(0x73bb5392, 0x6c560e8f),
+           TOBN(0x6428fcbe, 0x263e3944), TOBN(0xc11828d5, 0x1c387434)}},
+         {{TOBN(0x3cd04be1, 0x3e4b12ff), TOBN(0xc3aad9f9, 0x2d88667c),
+           TOBN(0xc52ddcf8, 0x248120cf), TOBN(0x985a892e, 0x2a389532)},
+          {TOBN(0xfbb4b21b, 0x3bb85fa0), TOBN(0xf95375e0, 0x8dfc6269),
+           TOBN(0xfb4fb06c, 0x7ee2acea), TOBN(0x6785426e, 0x309c4d1f)}},
+         {{TOBN(0x659b17c8, 0xd8ceb147), TOBN(0x9b649eee, 0xb70a5554),
+           TOBN(0x6b7fa0b5, 0xac6bc634), TOBN(0xd99fe2c7, 0x1d6e732f)},
+          {TOBN(0x30e6e762, 0x8d3abba2), TOBN(0x18fee6e7, 0xa797b799),
+           TOBN(0x5c9d360d, 0xc696464d), TOBN(0xe3baeb48, 0x27bfde12)}},
+         {{TOBN(0x2bf5db47, 0xf23206d5), TOBN(0x2f6d3420, 0x1d260152),
+           TOBN(0x17b87653, 0x3f8ff89a), TOBN(0x5157c30c, 0x378fa458)},
+          {TOBN(0x7517c5c5, 0x2d4fb936), TOBN(0xef22f7ac, 0xe6518cdc),
+           TOBN(0xdeb483e6, 0xbf847a64), TOBN(0xf5084558, 0x92e0fa89)}}},
+        {{{TOBN(0xab9659d8, 0xdf7304d4), TOBN(0xb71bcf1b, 0xff210e8e),
+           TOBN(0xa9a2438b, 0xd73fbd60), TOBN(0x4595cd1f, 0x5d11b4de)},
+          {TOBN(0x9c0d329a, 0x4835859d), TOBN(0x4a0f0d2d, 0x7dbb6e56),
+           TOBN(0xc6038e5e, 0xdf928a4e), TOBN(0xc9429621, 0x8f5ad154)}},
+         {{TOBN(0x91213462, 0xf23f2d92), TOBN(0x6cab71bd, 0x60b94078),
+           TOBN(0x6bdd0a63, 0x176cde20), TOBN(0x54c9b20c, 0xee4d54bc)},
+          {TOBN(0x3cd2d8aa, 0x9f2ac02f), TOBN(0x03f8e617, 0x206eedb0),
+           TOBN(0xc7f68e16, 0x93086434), TOBN(0x831469c5, 0x92dd3db9)}},
+         {{TOBN(0x8521df24, 0x8f981354), TOBN(0x587e23ec, 0x3588a259),
+           TOBN(0xcbedf281, 0xd7a0992c), TOBN(0x06930a55, 0x38961407)},
+          {TOBN(0x09320deb, 0xbe5bbe21), TOBN(0xa7ffa5b5, 0x2491817f),
+           TOBN(0xe6c8b4d9, 0x09065160), TOBN(0xac4f3992, 0xfff6d2a9)}},
+         {{TOBN(0x7aa7a158, 0x3ae9c1bd), TOBN(0xe0af6d98, 0xe37ce240),
+           TOBN(0xe54342d9, 0x28ab38b4), TOBN(0xe8b75007, 0x0a1c98ca)},
+          {TOBN(0xefce86af, 0xe02358f2), TOBN(0x31b8b856, 0xea921228),
+           TOBN(0x052a1912, 0x0a1c67fc), TOBN(0xb4069ea4, 0xe3aead59)}},
+         {{TOBN(0x3232d6e2, 0x7fa03cb3), TOBN(0xdb938e5b, 0x0fdd7d88),
+           TOBN(0x04c1d2cd, 0x2ccbfc5d), TOBN(0xd2f45c12, 0xaf3a580f)},
+          {TOBN(0x592620b5, 0x7883e614), TOBN(0x5fd27e68, 0xbe7c5f26),
+           TOBN(0x139e45a9, 0x1567e1e3), TOBN(0x2cc71d2d, 0x44d8aaaf)}},
+         {{TOBN(0x4a9090cd, 0xe36d0757), TOBN(0xf722d7b1, 0xd9a29382),
+           TOBN(0xfb7fb04c, 0x04b48ddf), TOBN(0x628ad2a7, 0xebe16f43)},
+          {TOBN(0xcd3fbfb5, 0x20226040), TOBN(0x6c34ecb1, 0x5104b6c4),
+           TOBN(0x30c0754e, 0xc903c188), TOBN(0xec336b08, 0x2d23cab0)}},
+         {{TOBN(0x473d62a2, 0x1e206ee5), TOBN(0xf1e27480, 0x8c49a633),
+           TOBN(0x87ab956c, 0xe9f6b2c3), TOBN(0x61830b48, 0x62b606ea)},
+          {TOBN(0x67cd6846, 0xe78e815f), TOBN(0xfe40139f, 0x4c02082a),
+           TOBN(0x52bbbfcb, 0x952ec365), TOBN(0x74c11642, 0x6b9836ab)}},
+         {{TOBN(0x9f51439e, 0x558df019), TOBN(0x230da4ba, 0xac712b27),
+           TOBN(0x518919e3, 0x55185a24), TOBN(0x4dcefcdd, 0x84b78f50)},
+          {TOBN(0xa7d90fb2, 0xa47d4c5a), TOBN(0x55ac9abf, 0xb30e009e),
+           TOBN(0xfd2fc359, 0x74eed273), TOBN(0xb72d824c, 0xdbea8faf)}},
+         {{TOBN(0xce721a74, 0x4513e2ca), TOBN(0x0b418612, 0x38240b2c),
+           TOBN(0x05199968, 0xd5baa450), TOBN(0xeb1757ed, 0x2b0e8c25)},
+          {TOBN(0x6ebc3e28, 0x3dfac6d5), TOBN(0xb2431e2e, 0x48a237f5),
+           TOBN(0x2acb5e23, 0x52f61499), TOBN(0x5558a2a7, 0xe06c936b)}},
+         {{TOBN(0xd213f923, 0xcbb13d1b), TOBN(0x98799f42, 0x5bfb9bfe),
+           TOBN(0x1ae8ddc9, 0x701144a9), TOBN(0x0b8b3bb6, 0x4c5595ee)},
+          {TOBN(0x0ea9ef2e, 0x3ecebb21), TOBN(0x17cb6c4b, 0x3671f9a7),
+           TOBN(0x47ef464f, 0x726f1d1f), TOBN(0x171b9484, 0x6943a276)}},
+         {{TOBN(0x51a4ae2d, 0x7ef0329c), TOBN(0x08509222, 0x91c4402a),
+           TOBN(0x64a61d35, 0xafd45bbc), TOBN(0x38f096fe, 0x3035a851)},
+          {TOBN(0xc7468b74, 0xa1dec027), TOBN(0xe8cf10e7, 0x4fc7dcba),
+           TOBN(0xea35ff40, 0xf4a06353), TOBN(0x0b4c0dfa, 0x8b77dd66)}},
+         {{TOBN(0x779b8552, 0xde7e5c19), TOBN(0xfab28609, 0xc1c0256c),
+           TOBN(0x64f58eee, 0xabd4743d), TOBN(0x4e8ef838, 0x7b6cc93b)},
+          {TOBN(0xee650d26, 0x4cb1bf3d), TOBN(0x4c1f9d09, 0x73dedf61),
+           TOBN(0xaef7c9d7, 0xbfb70ced), TOBN(0x1ec0507e, 0x1641de1e)}},
+         {{TOBN(0xcd7e5cc7, 0xcde45079), TOBN(0xde173c9a, 0x516ac9e4),
+           TOBN(0x517a8494, 0xc170315c), TOBN(0x438fd905, 0x91d8e8fb)},
+          {TOBN(0x5145c506, 0xc7d9630b), TOBN(0x6457a87b, 0xf47d4d75),
+           TOBN(0xd31646bf, 0x0d9a80e8), TOBN(0x453add2b, 0xcef3aabe)}},
+         {{TOBN(0xc9941109, 0xa607419d), TOBN(0xfaa71e62, 0xbb6bca80),
+           TOBN(0x34158c13, 0x07c431f3), TOBN(0x594abebc, 0x992bc47a)},
+          {TOBN(0x6dfea691, 0xeb78399f), TOBN(0x48aafb35, 0x3f42cba4),
+           TOBN(0xedcd65af, 0x077c04f0), TOBN(0x1a29a366, 0xe884491a)}},
+         {{TOBN(0x023a40e5, 0x1c21f2bf), TOBN(0xf99a513c, 0xa5057aee),
+           TOBN(0xa3fe7e25, 0xbcab072e), TOBN(0x8568d2e1, 0x40e32bcf)},
+          {TOBN(0x904594eb, 0xd3f69d9f), TOBN(0x181a9733, 0x07affab1),
+           TOBN(0xe4d68d76, 0xb6e330f4), TOBN(0x87a6dafb, 0xc75a7fc1)}},
+         {{TOBN(0x549db2b5, 0xef7d9289), TOBN(0x2480d4a8, 0x197f015a),
+           TOBN(0x61d5590b, 0xc40493b6), TOBN(0x3a55b52e, 0x6f780331)},
+          {TOBN(0x40eb8115, 0x309eadb0), TOBN(0xdea7de5a, 0x92e5c625),
+           TOBN(0x64d631f0, 0xcc6a3d5a), TOBN(0x9d5e9d7c, 0x93e8dd61)}},
+         {{TOBN(0xf297bef5, 0x206d3ffc), TOBN(0x23d5e033, 0x7d808bd4),
+           TOBN(0x4a4f6912, 0xd24cf5ba), TOBN(0xe4d8163b, 0x09cdaa8a)},
+          {TOBN(0x0e0de9ef, 0xd3082e8e), TOBN(0x4fe1246c, 0x0192f360),
+           TOBN(0x1f900150, 0x4b8eee0a), TOBN(0x5219da81, 0xf1da391b)}},
+         {{TOBN(0x7bf6a5c1, 0xf7ea25aa), TOBN(0xd165e6bf, 0xfbb07d5f),
+           TOBN(0xe3539361, 0x89e78671), TOBN(0xa3fcac89, 0x2bac4219)},
+          {TOBN(0xdfab6fd4, 0xf0baa8ab), TOBN(0x5a4adac1, 0xe2c1c2e5),
+           TOBN(0x6cd75e31, 0x40d85849), TOBN(0xce263fea, 0x19b39181)}},
+         {{TOBN(0xcb6803d3, 0x07032c72), TOBN(0x7f40d5ce, 0x790968c8),
+           TOBN(0xa6de86bd, 0xdce978f0), TOBN(0x25547c4f, 0x368f751c)},
+          {TOBN(0xb1e685fd, 0x65fb2a9e), TOBN(0xce69336f, 0x1eb9179c),
+           TOBN(0xb15d1c27, 0x12504442), TOBN(0xb7df465c, 0xb911a06b)}},
+         {{TOBN(0xb8d804a3, 0x315980cd), TOBN(0x693bc492, 0xfa3bebf7),
+           TOBN(0x3578aeee, 0x2253c504), TOBN(0x158de498, 0xcd2474a2)},
+          {TOBN(0x1331f5c7, 0xcfda8368), TOBN(0xd2d7bbb3, 0x78d7177e),
+           TOBN(0xdf61133a, 0xf3c1e46e), TOBN(0x5836ce7d, 0xd30e7be8)}},
+         {{TOBN(0x83084f19, 0x94f834cb), TOBN(0xd35653d4, 0x429ed782),
+           TOBN(0xa542f16f, 0x59e58243), TOBN(0xc2b52f65, 0x0470a22d)},
+          {TOBN(0xe3b6221b, 0x18f23d96), TOBN(0xcb05abac, 0x3f5252b4),
+           TOBN(0xca00938b, 0x87d61402), TOBN(0x2f186cdd, 0x411933e4)}},
+         {{TOBN(0xe042ece5, 0x9a29a5c5), TOBN(0xb19b3c07, 0x3b6c8402),
+           TOBN(0xc97667c7, 0x19d92684), TOBN(0xb5624622, 0xebc66372)},
+          {TOBN(0x0cb96e65, 0x3c04fa02), TOBN(0x83a7176c, 0x8eaa39aa),
+           TOBN(0x2033561d, 0xeaa1633f), TOBN(0x45a9d086, 0x4533df73)}},
+         {{TOBN(0xe0542c1d, 0x3dc090bc), TOBN(0x82c996ef, 0xaa59c167),
+           TOBN(0xe3f735e8, 0x0ee7fc4d), TOBN(0x7b179393, 0x7c35db79)},
+          {TOBN(0xb6419e25, 0xf8c5dbfd), TOBN(0x4d9d7a1e, 0x1f327b04),
+           TOBN(0x979f6f9b, 0x298dfca8), TOBN(0xc7c5dff1, 0x8de9366a)}},
+         {{TOBN(0x1b7a588d, 0x04c82bdd), TOBN(0x68005534, 0xf8319dfd),
+           TOBN(0xde8a55b5, 0xd8eb9580), TOBN(0x5ea886da, 0x8d5bca81)},
+          {TOBN(0xe8530a01, 0x252a0b4d), TOBN(0x1bffb4fe, 0x35eaa0a1),
+           TOBN(0x2ad828b1, 0xd8e99563), TOBN(0x7de96ef5, 0x95f9cd87)}},
+         {{TOBN(0x4abb2d0c, 0xd77d970c), TOBN(0x03cfb933, 0xd33ef9cb),
+           TOBN(0xb0547c01, 0x8b211fe9), TOBN(0x2fe64809, 0xa56ed1c6)},
+          {TOBN(0xcb7d5624, 0xc2ac98cc), TOBN(0x2a1372c0, 0x1a393e33),
+           TOBN(0xc8d1ec1c, 0x29660521), TOBN(0xf3d31b04, 0xb37ac3e9)}},
+         {{TOBN(0xa29ae9df, 0x5ece6e7c), TOBN(0x0603ac8f, 0x0facfb55),
+           TOBN(0xcfe85b7a, 0xdda233a5), TOBN(0xe618919f, 0xbd75f0b8)},
+          {TOBN(0xf555a3d2, 0x99bf1603), TOBN(0x1f43afc9, 0xf184255a),
+           TOBN(0xdcdaf341, 0x319a3e02), TOBN(0xd3b117ef, 0x03903a39)}},
+         {{TOBN(0xe095da13, 0x65d1d131), TOBN(0x86f16367, 0xc37ad03e),
+           TOBN(0x5f37389e, 0x462cd8dd), TOBN(0xc103fa04, 0xd67a60e6)},
+          {TOBN(0x57c34344, 0xf4b478f0), TOBN(0xce91edd8, 0xe117c98d),
+           TOBN(0x001777b0, 0x231fc12e), TOBN(0x11ae47f2, 0xb207bccb)}},
+         {{TOBN(0xd983cf8d, 0x20f8a242), TOBN(0x7aff5b1d, 0xf22e1ad8),
+           TOBN(0x68fd11d0, 0x7fc4feb3), TOBN(0x5d53ae90, 0xb0f1c3e1)},
+          {TOBN(0x50fb7905, 0xec041803), TOBN(0x85e3c977, 0x14404888),
+           TOBN(0x0e67faed, 0xac628d8f), TOBN(0x2e865150, 0x6668532c)}},
+         {{TOBN(0x15acaaa4, 0x6a67a6b0), TOBN(0xf4cdee25, 0xb25cec41),
+           TOBN(0x49ee565a, 0xe4c6701e), TOBN(0x2a04ca66, 0xfc7d63d8)},
+          {TOBN(0xeb105018, 0xef0543fb), TOBN(0xf709a4f5, 0xd1b0d81d),
+           TOBN(0x5b906ee6, 0x2915d333), TOBN(0xf4a87412, 0x96f1f0ab)}},
+         {{TOBN(0xb6b82fa7, 0x4d82f4c2), TOBN(0x90725a60, 0x6804efb3),
+           TOBN(0xbc82ec46, 0xadc3425e), TOBN(0xb7b80581, 0x2787843e)},
+          {TOBN(0xdf46d91c, 0xdd1fc74c), TOBN(0xdc1c62cb, 0xe783a6c4),
+           TOBN(0x59d1b9f3, 0x1a04cbba), TOBN(0xd87f6f72, 0x95e40764)}},
+         {{TOBN(0x02b4cfc1, 0x317f4a76), TOBN(0x8d2703eb, 0x91036bce),
+           TOBN(0x98206cc6, 0xa5e72a56), TOBN(0x57be9ed1, 0xcf53fb0f)},
+          {TOBN(0x09374571, 0xef0b17ac), TOBN(0x74b2655e, 0xd9181b38),
+           TOBN(0xc8f80ea8, 0x89935d0e), TOBN(0xc0d9e942, 0x91529936)}},
+         {{TOBN(0x19686041, 0x1e84e0e5), TOBN(0xa5db84d3, 0xaea34c93),
+           TOBN(0xf9d5bb19, 0x7073a732), TOBN(0xb8d2fe56, 0x6bcfd7c0)},
+          {TOBN(0x45775f36, 0xf3eb82fa), TOBN(0x8cb20ccc, 0xfdff8b58),
+           TOBN(0x1659b65f, 0x8374c110), TOBN(0xb8b4a422, 0x330c789a)}},
+         {{TOBN(0x75e3c3ea, 0x6fe8208b), TOBN(0xbd74b9e4, 0x286e78fe),
+           TOBN(0x0be2e81b, 0xd7d93a1a), TOBN(0x7ed06e27, 0xdd0a5aae)},
+          {TOBN(0x721f5a58, 0x6be8b800), TOBN(0x428299d1, 0xd846db28),
+           TOBN(0x95cb8e6b, 0x5be88ed3), TOBN(0xc3186b23, 0x1c034e11)}},
+         {{TOBN(0xa6312c9e, 0x8977d99b), TOBN(0xbe944331, 0x83f531e7),
+           TOBN(0x8232c0c2, 0x18d3b1d4), TOBN(0x617aae8b, 0xe1247b73)},
+          {TOBN(0x40153fc4, 0x282aec3b), TOBN(0xc6063d2f, 0xf7b8f823),
+           TOBN(0x68f10e58, 0x3304f94c), TOBN(0x31efae74, 0xee676346)}},
+         {{TOBN(0xbadb6c6d, 0x40a9b97c), TOBN(0x14702c63, 0x4f666256),
+           TOBN(0xdeb954f1, 0x5184b2e3), TOBN(0x5184a526, 0x94b6ca40)},
+          {TOBN(0xfff05337, 0x003c32ea), TOBN(0x5aa374dd, 0x205974c7),
+           TOBN(0x9a763854, 0x4b0dd71a), TOBN(0x459cd27f, 0xdeb947ec)}},
+         {{TOBN(0xa6e28161, 0x459c2b92), TOBN(0x2f020fa8, 0x75ee8ef5),
+           TOBN(0xb132ec2d, 0x30b06310), TOBN(0xc3e15899, 0xbc6a4530)},
+          {TOBN(0xdc5f53fe, 0xaa3f451a), TOBN(0x3a3c7f23, 0xc2d9acac),
+           TOBN(0x2ec2f892, 0x6b27e58b), TOBN(0x68466ee7, 0xd742799f)}},
+         {{TOBN(0x98324dd4, 0x1fa26613), TOBN(0xa2dc6dab, 0xbdc29d63),
+           TOBN(0xf9675faa, 0xd712d657), TOBN(0x813994be, 0x21fd8d15)},
+          {TOBN(0x5ccbb722, 0xfd4f7553), TOBN(0x5135ff8b, 0xf3a36b20),
+           TOBN(0x44be28af, 0x69559df5), TOBN(0x40b65bed, 0x9d41bf30)}},
+         {{TOBN(0xd98bf2a4, 0x3734e520), TOBN(0x5e3abbe3, 0x209bdcba),
+           TOBN(0x77c76553, 0xbc945b35), TOBN(0x5331c093, 0xc6ef14aa)},
+          {TOBN(0x518ffe29, 0x76b60c80), TOBN(0x2285593b, 0x7ace16f8),
+           TOBN(0xab1f64cc, 0xbe2b9784), TOBN(0xe8f2c0d9, 0xab2421b6)}},
+         {{TOBN(0x617d7174, 0xc1df065c), TOBN(0xafeeb5ab, 0x5f6578fa),
+           TOBN(0x16ff1329, 0x263b54a8), TOBN(0x45c55808, 0xc990dce3)},
+          {TOBN(0x42eab6c0, 0xecc8c177), TOBN(0x799ea9b5, 0x5982ecaa),
+           TOBN(0xf65da244, 0xb607ef8e), TOBN(0x8ab226ce, 0x32a3fc2c)}},
+         {{TOBN(0x745741e5, 0x7ea973dc), TOBN(0x5c00ca70, 0x20888f2e),
+           TOBN(0x7cdce3cf, 0x45fd9cf1), TOBN(0x8a741ef1, 0x5507f872)},
+          {TOBN(0x47c51c2f, 0x196b4cec), TOBN(0x70d08e43, 0xc97ea618),
+           TOBN(0x930da15c, 0x15b18a2b), TOBN(0x33b6c678, 0x2f610514)}},
+         {{TOBN(0xc662e4f8, 0x07ac9794), TOBN(0x1eccf050, 0xba06cb79),
+           TOBN(0x1ff08623, 0xe7d954e5), TOBN(0x6ef2c5fb, 0x24cf71c3)},
+          {TOBN(0xb2c063d2, 0x67978453), TOBN(0xa0cf3796, 0x1d654af8),
+           TOBN(0x7cb242ea, 0x7ebdaa37), TOBN(0x206e0b10, 0xb86747e0)}},
+         {{TOBN(0x481dae5f, 0xd5ecfefc), TOBN(0x07084fd8, 0xc2bff8fc),
+           TOBN(0x8040a01a, 0xea324596), TOBN(0x4c646980, 0xd4de4036)},
+          {TOBN(0x9eb8ab4e, 0xd65abfc3), TOBN(0xe01cb91f, 0x13541ec7),
+           TOBN(0x8f029adb, 0xfd695012), TOBN(0x9ae28483, 0x3c7569ec)}},
+         {{TOBN(0xa5614c9e, 0xa66d80a1), TOBN(0x680a3e44, 0x75f5f911),
+           TOBN(0x0c07b14d, 0xceba4fc1), TOBN(0x891c285b, 0xa13071c1)},
+          {TOBN(0xcac67ceb, 0x799ece3c), TOBN(0x29b910a9, 0x41e07e27),
+           TOBN(0x66bdb409, 0xf2e43123), TOBN(0x06f8b137, 0x7ac9ecbe)}},
+         {{TOBN(0x5981fafd, 0x38547090), TOBN(0x19ab8b9f, 0x85e3415d),
+           TOBN(0xfc28c194, 0xc7e31b27), TOBN(0x843be0aa, 0x6fbcbb42)},
+          {TOBN(0xf3b1ed43, 0xa6db836c), TOBN(0x2a1330e4, 0x01a45c05),
+           TOBN(0x4f19f3c5, 0x95c1a377), TOBN(0xa85f39d0, 0x44b5ee33)}},
+         {{TOBN(0x3da18e6d, 0x4ae52834), TOBN(0x5a403b39, 0x7423dcb0),
+           TOBN(0xbb555e0a, 0xf2374aef), TOBN(0x2ad599c4, 0x1e8ca111)},
+          {TOBN(0x1b3a2fb9, 0x014b3bf8), TOBN(0x73092684, 0xf66d5007),
+           TOBN(0x079f1426, 0xc4340102), TOBN(0x1827cf81, 0x8fddf4de)}},
+         {{TOBN(0xc83605f6, 0xf10ff927), TOBN(0xd3871451, 0x23739fc6),
+           TOBN(0x6d163450, 0xcac1c2cc), TOBN(0x6b521296, 0xa2ec1ac5)},
+          {TOBN(0x0606c4f9, 0x6e3cb4a5), TOBN(0xe47d3f41, 0x778abff7),
+           TOBN(0x425a8d5e, 0xbe8e3a45), TOBN(0x53ea9e97, 0xa6102160)}},
+         {{TOBN(0x477a106e, 0x39cbb688), TOBN(0x532401d2, 0xf3386d32),
+           TOBN(0x8e564f64, 0xb1b9b421), TOBN(0xca9b8388, 0x81dad33f)},
+          {TOBN(0xb1422b4e, 0x2093913e), TOBN(0x533d2f92, 0x69bc8112),
+           TOBN(0x3fa017be, 0xebe7b2c7), TOBN(0xb2767c4a, 0xcaf197c6)}},
+         {{TOBN(0xc925ff87, 0xaedbae9f), TOBN(0x7daf0eb9, 0x36880a54),
+           TOBN(0x9284ddf5, 0x9c4d0e71), TOBN(0x1581cf93, 0x316f8cf5)},
+          {TOBN(0x3eeca887, 0x3ac1f452), TOBN(0xb417fce9, 0xfb6aeffe),
+           TOBN(0xa5918046, 0xeefb8dc3), TOBN(0x73d318ac, 0x02209400)}},
+         {{TOBN(0xe800400f, 0x728693e5), TOBN(0xe87d814b, 0x339927ed),
+           TOBN(0x93e94d3b, 0x57ea9910), TOBN(0xff8a35b6, 0x2245fb69)},
+          {TOBN(0x043853d7, 0x7f200d34), TOBN(0x470f1e68, 0x0f653ce1),
+           TOBN(0x81ac05bd, 0x59a06379), TOBN(0xa14052c2, 0x03930c29)}},
+         {{TOBN(0x6b72fab5, 0x26bc2797), TOBN(0x13670d16, 0x99f16771),
+           TOBN(0x00170052, 0x1e3e48d1), TOBN(0x978fe401, 0xb7adf678)},
+          {TOBN(0x55ecfb92, 0xd41c5dd4), TOBN(0x5ff8e247, 0xc7b27da5),
+           TOBN(0xe7518272, 0x013fb606), TOBN(0x5768d7e5, 0x2f547a3c)}},
+         {{TOBN(0xbb24eaa3, 0x60017a5f), TOBN(0x6b18e6e4, 0x9c64ce9b),
+           TOBN(0xc225c655, 0x103dde07), TOBN(0xfc3672ae, 0x7592f7ea)},
+          {TOBN(0x9606ad77, 0xd06283a1), TOBN(0x542fc650, 0xe4d59d99),
+           TOBN(0xabb57c49, 0x2a40e7c2), TOBN(0xac948f13, 0xa8db9f55)}},
+         {{TOBN(0x6d4c9682, 0xb04465c3), TOBN(0xe3d062fa, 0x6468bd15),
+           TOBN(0xa51729ac, 0x5f318d7e), TOBN(0x1fc87df6, 0x9eb6fc95)},
+          {TOBN(0x63d146a8, 0x0591f652), TOBN(0xa861b8f7, 0x589621aa),
+           TOBN(0x59f5f15a, 0xce31348c), TOBN(0x8f663391, 0x440da6da)}},
+         {{TOBN(0xcfa778ac, 0xb591ffa3), TOBN(0x027ca9c5, 0x4cdfebce),
+           TOBN(0xbe8e05a5, 0x444ea6b3), TOBN(0x8aab4e69, 0xa78d8254)},
+          {TOBN(0x2437f04f, 0xb474d6b8), TOBN(0x6597ffd4, 0x045b3855),
+           TOBN(0xbb0aea4e, 0xca47ecaa), TOBN(0x568aae83, 0x85c7ebfc)}},
+         {{TOBN(0x0e966e64, 0xc73b2383), TOBN(0x49eb3447, 0xd17d8762),
+           TOBN(0xde107821, 0x8da05dab), TOBN(0x443d8baa, 0x016b7236)},
+          {TOBN(0x163b63a5, 0xea7610d6), TOBN(0xe47e4185, 0xce1ca979),
+           TOBN(0xae648b65, 0x80baa132), TOBN(0xebf53de2, 0x0e0d5b64)}},
+         {{TOBN(0x8d3bfcb4, 0xd3c8c1ca), TOBN(0x0d914ef3, 0x5d04b309),
+           TOBN(0x55ef6415, 0x3de7d395), TOBN(0xbde1666f, 0x26b850e8)},
+          {TOBN(0xdbe1ca6e, 0xd449ab19), TOBN(0x8902b322, 0xe89a2672),
+           TOBN(0xb1674b7e, 0xdacb7a53), TOBN(0x8e9faf6e, 0xf52523ff)}},
+         {{TOBN(0x6ba535da, 0x9a85788b), TOBN(0xd21f03ae, 0xbd0626d4),
+           TOBN(0x099f8c47, 0xe873dc64), TOBN(0xcda8564d, 0x018ec97e)},
+          {TOBN(0x3e8d7a5c, 0xde92c68c), TOBN(0x78e035a1, 0x73323cc4),
+           TOBN(0x3ef26275, 0xf880ff7c), TOBN(0xa4ee3dff, 0x273eedaa)}},
+         {{TOBN(0x58823507, 0xaf4e18f8), TOBN(0x967ec9b5, 0x0672f328),
+           TOBN(0x9ded19d9, 0x559d3186), TOBN(0x5e2ab3de, 0x6cdce39c)},
+          {TOBN(0xabad6e4d, 0x11c226df), TOBN(0xf9783f43, 0x87723014),
+           TOBN(0x9a49a0cf, 0x1a885719), TOBN(0xfc0c1a5a, 0x90da9dbf)}},
+         {{TOBN(0x8bbaec49, 0x571d92ac), TOBN(0x569e85fe, 0x4692517f),
+           TOBN(0x8333b014, 0xa14ea4af), TOBN(0x32f2a62f, 0x12e5c5ad)},
+          {TOBN(0x98c2ce3a, 0x06d89b85), TOBN(0xb90741aa, 0x2ff77a08),
+           TOBN(0x2530defc, 0x01f795a2), TOBN(0xd6e5ba0b, 0x84b3c199)}},
+         {{TOBN(0x7d8e8451, 0x12e4c936), TOBN(0xae419f7d, 0xbd0be17b),
+           TOBN(0xa583fc8c, 0x22262bc9), TOBN(0x6b842ac7, 0x91bfe2bd)},
+          {TOBN(0x33cef4e9, 0x440d6827), TOBN(0x5f69f4de, 0xef81fb14),
+           TOBN(0xf16cf6f6, 0x234fbb92), TOBN(0x76ae3fc3, 0xd9e7e158)}},
+         {{TOBN(0x4e89f6c2, 0xe9740b33), TOBN(0x677bc85d, 0x4962d6a1),
+           TOBN(0x6c6d8a7f, 0x68d10d15), TOBN(0x5f9a7224, 0x0257b1cd)},
+          {TOBN(0x7096b916, 0x4ad85961), TOBN(0x5f8c47f7, 0xe657ab4a),
+           TOBN(0xde57d7d0, 0xf7461d7e), TOBN(0x7eb6094d, 0x80ce5ee2)}},
+         {{TOBN(0x0b1e1dfd, 0x34190547), TOBN(0x8a394f43, 0xf05dd150),
+           TOBN(0x0a9eb24d, 0x97df44e6), TOBN(0x78ca06bf, 0x87675719)},
+          {TOBN(0x6f0b3462, 0x6ffeec22), TOBN(0x9d91bcea, 0x36cdd8fb),
+           TOBN(0xac83363c, 0xa105be47), TOBN(0x81ba76c1, 0x069710e3)}},
+         {{TOBN(0x3d1b24cb, 0x28c682c6), TOBN(0x27f25228, 0x8612575b),
+           TOBN(0xb587c779, 0xe8e66e98), TOBN(0x7b0c03e9, 0x405eb1fe)},
+          {TOBN(0xfdf0d030, 0x15b548e7), TOBN(0xa8be76e0, 0x38b36af7),
+           TOBN(0x4cdab04a, 0x4f310c40), TOBN(0x6287223e, 0xf47ecaec)}},
+         {{TOBN(0x678e6055, 0x8b399320), TOBN(0x61fe3fa6, 0xc01e4646),
+           TOBN(0xc482866b, 0x03261a5e), TOBN(0xdfcf45b8, 0x5c2f244a)},
+          {TOBN(0x8fab9a51, 0x2f684b43), TOBN(0xf796c654, 0xc7220a66),
+           TOBN(0x1d90707e, 0xf5afa58f), TOBN(0x2c421d97, 0x4fdbe0de)}},
+         {{TOBN(0xc4f4cda3, 0xaf2ebc2f), TOBN(0xa0af843d, 0xcb4efe24),
+           TOBN(0x53b857c1, 0x9ccd10b1), TOBN(0xddc9d1eb, 0x914d3e04)},
+          {TOBN(0x7bdec8bb, 0x62771deb), TOBN(0x829277aa, 0x91c5aa81),
+           TOBN(0x7af18dd6, 0x832391ae), TOBN(0x1740f316, 0xc71a84ca)}}},
+        {{{TOBN(0x8928e99a, 0xeeaf8c49), TOBN(0xee7aa73d, 0x6e24d728),
+           TOBN(0x4c5007c2, 0xe72b156c), TOBN(0x5fcf57c5, 0xed408a1d)},
+          {TOBN(0x9f719e39, 0xb6057604), TOBN(0x7d343c01, 0xc2868bbf),
+           TOBN(0x2cca254b, 0x7e103e2d), TOBN(0xe6eb38a9, 0xf131bea2)}},
+         {{TOBN(0xb33e624f, 0x8be762b4), TOBN(0x2a9ee4d1, 0x058e3413),
+           TOBN(0x968e6369, 0x67d805fa), TOBN(0x9848949b, 0x7db8bfd7)},
+          {TOBN(0x5308d7e5, 0xd23a8417), TOBN(0x892f3b1d, 0xf3e29da5),
+           TOBN(0xc95c139e, 0x3dee471f), TOBN(0x8631594d, 0xd757e089)}},
+         {{TOBN(0xe0c82a3c, 0xde918dcc), TOBN(0x2e7b5994, 0x26fdcf4b),
+           TOBN(0x82c50249, 0x32cb1b2d), TOBN(0xea613a9d, 0x7657ae07)},
+          {TOBN(0xc2eb5f6c, 0xf1fdc9f7), TOBN(0xb6eae8b8, 0x879fe682),
+           TOBN(0x253dfee0, 0x591cbc7f), TOBN(0x000da713, 0x3e1290e6)}},
+         {{TOBN(0x1083e2ea, 0x1f095615), TOBN(0x0a28ad77, 0x14e68c33),
+           TOBN(0x6bfc0252, 0x3d8818be), TOBN(0xb585113a, 0xf35850cd)},
+          {TOBN(0x7d935f0b, 0x30df8aa1), TOBN(0xaddda07c, 0x4ab7e3ac),
+           TOBN(0x92c34299, 0x552f00cb), TOBN(0xc33ed1de, 0x2909df6c)}},
+         {{TOBN(0x22c2195d, 0x80e87766), TOBN(0x9e99e6d8, 0x9ddf4ac0),
+           TOBN(0x09642e4e, 0x65e74934), TOBN(0x2610ffa2, 0xff1ff241)},
+          {TOBN(0x4d1d47d4, 0x751c8159), TOBN(0x697b4985, 0xaf3a9363),
+           TOBN(0x0318ca46, 0x87477c33), TOBN(0xa90cb565, 0x9441eff3)}},
+         {{TOBN(0x58bb3848, 0x36f024cb), TOBN(0x85be1f77, 0x36016168),
+           TOBN(0x6c59587c, 0xdc7e07f1), TOBN(0x191be071, 0xaf1d8f02)},
+          {TOBN(0xbf169fa5, 0xcca5e55c), TOBN(0x3864ba3c, 0xf7d04eac),
+           TOBN(0x915e367f, 0x8d7d05db), TOBN(0xb48a876d, 0xa6549e5d)}},
+         {{TOBN(0xef89c656, 0x580e40a2), TOBN(0xf194ed8c, 0x728068bc),
+           TOBN(0x74528045, 0xa47990c9), TOBN(0xf53fc7d7, 0x5e1a4649)},
+          {TOBN(0xbec5ae9b, 0x78593e7d), TOBN(0x2cac4ee3, 0x41db65d7),
+           TOBN(0xa8c1eb24, 0x04a3d39b), TOBN(0x53b7d634, 0x03f8f3ef)}},
+         {{TOBN(0x2dc40d48, 0x3e07113c), TOBN(0x6e4a5d39, 0x7d8b63ae),
+           TOBN(0x5582a94b, 0x79684c2b), TOBN(0x932b33d4, 0x622da26c)},
+          {TOBN(0xf534f651, 0x0dbbf08d), TOBN(0x211d07c9, 0x64c23a52),
+           TOBN(0x0eeece0f, 0xee5bdc9b), TOBN(0xdf178168, 0xf7015558)}},
+         {{TOBN(0xd4294635, 0x0a712229), TOBN(0x93cbe448, 0x09273f8c),
+           TOBN(0x00b095ef, 0x8f13bc83), TOBN(0xbb741972, 0x8798978c)},
+          {TOBN(0x9d7309a2, 0x56dbe6e7), TOBN(0xe578ec56, 0x5a5d39ec),
+           TOBN(0x3961151b, 0x851f9a31), TOBN(0x2da7715d, 0xe5709eb4)}},
+         {{TOBN(0x867f3017, 0x53dfabf0), TOBN(0x728d2078, 0xb8e39259),
+           TOBN(0x5c75a0cd, 0x815d9958), TOBN(0xf84867a6, 0x16603be1)},
+          {TOBN(0xc865b13d, 0x70e35b1c), TOBN(0x02414468, 0x19b03e2c),
+           TOBN(0xe46041da, 0xac1f3121), TOBN(0x7c9017ad, 0x6f028a7c)}},
+         {{TOBN(0xabc96de9, 0x0a482873), TOBN(0x4265d6b1, 0xb77e54d4),
+           TOBN(0x68c38e79, 0xa57d88e7), TOBN(0xd461d766, 0x9ce82de3)},
+          {TOBN(0x817a9ec5, 0x64a7e489), TOBN(0xcc5675cd, 0xa0def5f2),
+           TOBN(0x9a00e785, 0x985d494e), TOBN(0xc626833f, 0x1b03514a)}},
+         {{TOBN(0xabe7905a, 0x83cdd60e), TOBN(0x50602fb5, 0xa1170184),
+           TOBN(0x689886cd, 0xb023642a), TOBN(0xd568d090, 0xa6e1fb00)},
+          {TOBN(0x5b1922c7, 0x0259217f), TOBN(0x93831cd9, 0xc43141e4),
+           TOBN(0xdfca3587, 0x0c95f86e), TOBN(0xdec2057a, 0x568ae828)}},
+         {{TOBN(0xc44ea599, 0xf98a759a), TOBN(0x55a0a7a2, 0xf7c23c1d),
+           TOBN(0xd5ffb6e6, 0x94c4f687), TOBN(0x3563cce2, 0x12848478)},
+          {TOBN(0x812b3517, 0xe7b1fbe1), TOBN(0x8a7dc979, 0x4f7338e0),
+           TOBN(0x211ecee9, 0x52d048db), TOBN(0x2eea4056, 0xc86ea3b8)}},
+         {{TOBN(0xd8cb68a7, 0xba772b34), TOBN(0xe16ed341, 0x5f4e2541),
+           TOBN(0x9b32f6a6, 0x0fec14db), TOBN(0xeee376f7, 0x391698be)},
+          {TOBN(0xe9a7aa17, 0x83674c02), TOBN(0x65832f97, 0x5843022a),
+           TOBN(0x29f3a8da, 0x5ba4990f), TOBN(0x79a59c3a, 0xfb8e3216)}},
+         {{TOBN(0x9cdc4d2e, 0xbd19bb16), TOBN(0xc6c7cfd0, 0xb3262d86),
+           TOBN(0xd4ce14d0, 0x969c0b47), TOBN(0x1fa352b7, 0x13e56128)},
+          {TOBN(0x383d55b8, 0x973db6d3), TOBN(0x71836850, 0xe8e5b7bf),
+           TOBN(0xc7714596, 0xe6bb571f), TOBN(0x259df31f, 0x2d5b2dd2)}},
+         {{TOBN(0x568f8925, 0x913cc16d), TOBN(0x18bc5b6d, 0xe1a26f5a),
+           TOBN(0xdfa413be, 0xf5f499ae), TOBN(0xf8835dec, 0xc3f0ae84)},
+          {TOBN(0xb6e60bd8, 0x65a40ab0), TOBN(0x65596439, 0x194b377e),
+           TOBN(0xbcd85625, 0x92084a69), TOBN(0x5ce433b9, 0x4f23ede0)}},
+         {{TOBN(0xe8e8f04f, 0x6ad65143), TOBN(0x11511827, 0xd6e14af6),
+           TOBN(0x3d390a10, 0x8295c0c7), TOBN(0x71e29ee4, 0x621eba16)},
+          {TOBN(0xa588fc09, 0x63717b46), TOBN(0x02be02fe, 0xe06ad4a2),
+           TOBN(0x931558c6, 0x04c22b22), TOBN(0xbb4d4bd6, 0x12f3c849)}},
+         {{TOBN(0x54a4f496, 0x20efd662), TOBN(0x92ba6d20, 0xc5952d14),
+           TOBN(0x2db8ea1e, 0xcc9784c2), TOBN(0x81cc10ca, 0x4b353644)},
+          {TOBN(0x40b570ad, 0x4b4d7f6c), TOBN(0x5c9f1d96, 0x84a1dcd2),
+           TOBN(0x01379f81, 0x3147e797), TOBN(0xe5c6097b, 0x2bd499f5)}},
+         {{TOBN(0x40dcafa6, 0x328e5e20), TOBN(0xf7b5244a, 0x54815550),
+           TOBN(0xb9a4f118, 0x47bfc978), TOBN(0x0ea0e79f, 0xd25825b1)},
+          {TOBN(0xa50f96eb, 0x646c7ecf), TOBN(0xeb811493, 0x446dea9d),
+           TOBN(0x2af04677, 0xdfabcf69), TOBN(0xbe3a068f, 0xc713f6e8)}},
+         {{TOBN(0x860d523d, 0x42e06189), TOBN(0xbf077941, 0x4e3aff13),
+           TOBN(0x0b616dca, 0xc1b20650), TOBN(0xe66dd6d1, 0x2131300d)},
+          {TOBN(0xd4a0fd67, 0xff99abde), TOBN(0xc9903550, 0xc7aac50d),
+           TOBN(0x022ecf8b, 0x7c46b2d7), TOBN(0x3333b1e8, 0x3abf92af)}},
+         {{TOBN(0x11cc113c, 0x6c491c14), TOBN(0x05976688, 0x80dd3f88),
+           TOBN(0xf5b4d9e7, 0x29d932ed), TOBN(0xe982aad8, 0xa2c38b6d)},
+          {TOBN(0x6f925347, 0x8be0dcf0), TOBN(0x700080ae, 0x65ca53f2),
+           TOBN(0xd8131156, 0x443ca77f), TOBN(0xe92d6942, 0xec51f984)}},
+         {{TOBN(0xd2a08af8, 0x85dfe9ae), TOBN(0xd825d9a5, 0x4d2a86ca),
+           TOBN(0x2c53988d, 0x39dff020), TOBN(0xf38b135a, 0x430cdc40)},
+          {TOBN(0x0c918ae0, 0x62a7150b), TOBN(0xf31fd8de, 0x0c340e9b),
+           TOBN(0xafa0e7ae, 0x4dbbf02e), TOBN(0x5847fb2a, 0x5eba6239)}},
+         {{TOBN(0x6b1647dc, 0xdccbac8b), TOBN(0xb642aa78, 0x06f485c8),
+           TOBN(0x873f3765, 0x7038ecdf), TOBN(0x2ce5e865, 0xfa49d3fe)},
+          {TOBN(0xea223788, 0xc98c4400), TOBN(0x8104a8cd, 0xf1fa5279),
+           TOBN(0xbcf7cc7a, 0x06becfd7), TOBN(0x49424316, 0xc8f974ae)}},
+         {{TOBN(0xc0da65e7, 0x84d6365d), TOBN(0xbcb7443f, 0x8f759fb8),
+           TOBN(0x35c712b1, 0x7ae81930), TOBN(0x80428dff, 0x4c6e08ab)},
+          {TOBN(0xf19dafef, 0xa4faf843), TOBN(0xced8538d, 0xffa9855f),
+           TOBN(0x20ac409c, 0xbe3ac7ce), TOBN(0x358c1fb6, 0x882da71e)}},
+         {{TOBN(0xafa9c0e5, 0xfd349961), TOBN(0x2b2cfa51, 0x8421c2fc),
+           TOBN(0x2a80db17, 0xf3a28d38), TOBN(0xa8aba539, 0x5d138e7e)},
+          {TOBN(0x52012d1d, 0x6e96eb8d), TOBN(0x65d8dea0, 0xcbaf9622),
+           TOBN(0x57735447, 0xb264f56c), TOBN(0xbeebef3f, 0x1b6c8da2)}},
+         {{TOBN(0xfc346d98, 0xce785254), TOBN(0xd50e8d72, 0xbb64a161),
+           TOBN(0xc03567c7, 0x49794add), TOBN(0x15a76065, 0x752c7ef6)},
+          {TOBN(0x59f3a222, 0x961f23d6), TOBN(0x378e4438, 0x73ecc0b0),
+           TOBN(0xc74be434, 0x5a82fde4), TOBN(0xae509af2, 0xd8b9cf34)}},
+         {{TOBN(0x4a61ee46, 0x577f44a1), TOBN(0xe09b748c, 0xb611deeb),
+           TOBN(0xc0481b2c, 0xf5f7b884), TOBN(0x35626678, 0x61acfa6b)},
+          {TOBN(0x37f4c518, 0xbf8d21e6), TOBN(0x22d96531, 0xb205a76d),
+           TOBN(0x37fb85e1, 0x954073c0), TOBN(0xbceafe4f, 0x65b3a567)}},
+         {{TOBN(0xefecdef7, 0xbe42a582), TOBN(0xd3fc6080, 0x65046be6),
+           TOBN(0xc9af13c8, 0x09e8dba9), TOBN(0x1e6c9847, 0x641491ff)},
+          {TOBN(0x3b574925, 0xd30c31f7), TOBN(0xb7eb72ba, 0xac2a2122),
+           TOBN(0x776a0dac, 0xef0859e7), TOBN(0x06fec314, 0x21900942)}},
+         {{TOBN(0x2464bc10, 0xf8c22049), TOBN(0x9bfbcce7, 0x875ebf69),
+           TOBN(0xd7a88e2a, 0x4336326b), TOBN(0xda05261c, 0x5bc2acfa)},
+          {TOBN(0xc29f5bdc, 0xeba7efc8), TOBN(0x471237ca, 0x25dbbf2e),
+           TOBN(0xa72773f2, 0x2975f127), TOBN(0xdc744e8e, 0x04d0b326)}},
+         {{TOBN(0x38a7ed16, 0xa56edb73), TOBN(0x64357e37, 0x2c007e70),
+           TOBN(0xa167d15b, 0x5080b400), TOBN(0x07b41164, 0x23de4be1)},
+          {TOBN(0xb2d91e32, 0x74c89883), TOBN(0x3c162821, 0x2882e7ed),
+           TOBN(0xad6b36ba, 0x7503e482), TOBN(0x48434e8e, 0x0ea34331)}},
+         {{TOBN(0x79f4f24f, 0x2c7ae0b9), TOBN(0xc46fbf81, 0x1939b44a),
+           TOBN(0x76fefae8, 0x56595eb1), TOBN(0x417b66ab, 0xcd5f29c7)},
+          {TOBN(0x5f2332b2, 0xc5ceec20), TOBN(0xd69661ff, 0xe1a1cae2),
+           TOBN(0x5ede7e52, 0x9b0286e6), TOBN(0x9d062529, 0xe276b993)}},
+         {{TOBN(0x324794b0, 0x7e50122b), TOBN(0xdd744f8b, 0x4af07ca5),
+           TOBN(0x30a12f08, 0xd63fc97b), TOBN(0x39650f1a, 0x76626d9d)},
+          {TOBN(0x101b47f7, 0x1fa38477), TOBN(0x3d815f19, 0xd4dc124f),
+           TOBN(0x1569ae95, 0xb26eb58a), TOBN(0xc3cde188, 0x95fb1887)}},
+         {{TOBN(0x54e9f37b, 0xf9539a48), TOBN(0xb0100e06, 0x7408c1a5),
+           TOBN(0x821d9811, 0xea580cbb), TOBN(0x8af52d35, 0x86e50c56)},
+          {TOBN(0xdfbd9d47, 0xdbbf698b), TOBN(0x2961a1ea, 0x03dc1c73),
+           TOBN(0x203d38f8, 0xe76a5df8), TOBN(0x08a53a68, 0x6def707a)}},
+         {{TOBN(0x26eefb48, 0x1bee45d4), TOBN(0xb3cee346, 0x3c688036),
+           TOBN(0x463c5315, 0xc42f2469), TOBN(0x19d84d2e, 0x81378162)},
+          {TOBN(0x22d7c3c5, 0x1c4d349f), TOBN(0x65965844, 0x163d59c5),
+           TOBN(0xcf198c56, 0xb8abceae), TOBN(0x6fb1fb1b, 0x628559d5)}},
+         {{TOBN(0x8bbffd06, 0x07bf8fe3), TOBN(0x46259c58, 0x3467734b),
+           TOBN(0xd8953cea, 0x35f7f0d3), TOBN(0x1f0bece2, 0xd65b0ff1)},
+          {TOBN(0xf7d5b4b3, 0xf3c72914), TOBN(0x29e8ea95, 0x3cb53389),
+           TOBN(0x4a365626, 0x836b6d46), TOBN(0xe849f910, 0xea174fde)}},
+         {{TOBN(0x7ec62fbb, 0xf4737f21), TOBN(0xd8dba5ab, 0x6209f5ac),
+           TOBN(0x24b5d7a9, 0xa5f9adbe), TOBN(0x707d28f7, 0xa61dc768)},
+          {TOBN(0x7711460b, 0xcaa999ea), TOBN(0xba7b174d, 0x1c92e4cc),
+           TOBN(0x3c4bab66, 0x18d4bf2d), TOBN(0xb8f0c980, 0xeb8bd279)}},
+         {{TOBN(0x024bea9a, 0x324b4737), TOBN(0xfba9e423, 0x32a83bca),
+           TOBN(0x6e635643, 0xa232dced), TOBN(0x99619367, 0x2571c8ba)},
+          {TOBN(0xe8c9f357, 0x54b7032b), TOBN(0xf936b3ba, 0x2442d54a),
+           TOBN(0x2263f0f0, 0x8290c65a), TOBN(0x48989780, 0xee2c7fdb)}},
+         {{TOBN(0xadc5d55a, 0x13d4f95e), TOBN(0x737cff85, 0xad9b8500),
+           TOBN(0x271c557b, 0x8a73f43d), TOBN(0xbed617a4, 0xe18bc476)},
+          {TOBN(0x66245401, 0x7dfd8ab2), TOBN(0xae7b89ae, 0x3a2870aa),
+           TOBN(0x1b555f53, 0x23a7e545), TOBN(0x6791e247, 0xbe057e4c)}},
+         {{TOBN(0x860136ad, 0x324fa34d), TOBN(0xea111447, 0x4cbeae28),
+           TOBN(0x023a4270, 0xbedd3299), TOBN(0x3d5c3a7f, 0xc1c35c34)},
+          {TOBN(0xb0f6db67, 0x8d0412d2), TOBN(0xd92625e2, 0xfcdc6b9a),
+           TOBN(0x92ae5ccc, 0x4e28a982), TOBN(0xea251c36, 0x47a3ce7e)}},
+         {{TOBN(0x9d658932, 0x790691bf), TOBN(0xed610589, 0x06b736ae),
+           TOBN(0x712c2f04, 0xc0d63b6e), TOBN(0x5cf06fd5, 0xc63d488f)},
+          {TOBN(0x97363fac, 0xd9588e41), TOBN(0x1f9bf762, 0x2b93257e),
+           TOBN(0xa9d1ffc4, 0x667acace), TOBN(0x1cf4a1aa, 0x0a061ecf)}},
+         {{TOBN(0x40e48a49, 0xdc1818d0), TOBN(0x0643ff39, 0xa3621ab0),
+           TOBN(0x5768640c, 0xe39ef639), TOBN(0x1fc099ea, 0x04d86854)},
+          {TOBN(0x9130b9c3, 0xeccd28fd), TOBN(0xd743cbd2, 0x7eec54ab),
+           TOBN(0x052b146f, 0xe5b475b6), TOBN(0x058d9a82, 0x900a7d1f)}},
+         {{TOBN(0x65e02292, 0x91262b72), TOBN(0x96f924f9, 0xbb0edf03),
+           TOBN(0x5cfa59c8, 0xfe206842), TOBN(0xf6037004, 0x5eafa720)},
+          {TOBN(0x5f30699e, 0x18d7dd96), TOBN(0x381e8782, 0xcbab2495),
+           TOBN(0x91669b46, 0xdd8be949), TOBN(0xb40606f5, 0x26aae8ef)}},
+         {{TOBN(0x2812b839, 0xfc6751a4), TOBN(0x16196214, 0xfba800ef),
+           TOBN(0x4398d5ca, 0x4c1a2875), TOBN(0x720c00ee, 0x653d8349)},
+          {TOBN(0xc2699eb0, 0xd820007c), TOBN(0x880ee660, 0xa39b5825),
+           TOBN(0x70694694, 0x471f6984), TOBN(0xf7d16ea8, 0xe3dda99a)}},
+         {{TOBN(0x28d675b2, 0xc0519a23), TOBN(0x9ebf94fe, 0x4f6952e3),
+           TOBN(0xf28bb767, 0xa2294a8a), TOBN(0x85512b4d, 0xfe0af3f5)},
+          {TOBN(0x18958ba8, 0x99b16a0d), TOBN(0x95c2430c, 0xba7548a7),
+           TOBN(0xb30d1b10, 0xa16be615), TOBN(0xe3ebbb97, 0x85bfb74c)}},
+         {{TOBN(0xa3273cfe, 0x18549fdb), TOBN(0xf6e200bf, 0x4fcdb792),
+           TOBN(0x54a76e18, 0x83aba56c), TOBN(0x73ec66f6, 0x89ef6aa2)},
+          {TOBN(0x8d17add7, 0xd1b9a305), TOBN(0xa959c5b9, 0xb7ae1b9d),
+           TOBN(0x88643522, 0x6bcc094a), TOBN(0xcc5616c4, 0xd7d429b9)}},
+         {{TOBN(0xa6dada01, 0xe6a33f7c), TOBN(0xc6217a07, 0x9d4e70ad),
+           TOBN(0xd619a818, 0x09c15b7c), TOBN(0xea06b329, 0x0e80c854)},
+          {TOBN(0x174811ce, 0xa5f5e7b9), TOBN(0x66dfc310, 0x787c65f4),
+           TOBN(0x4ea7bd69, 0x3316ab54), TOBN(0xc12c4acb, 0x1dcc0f70)}},
+         {{TOBN(0xe4308d1a, 0x1e407dd9), TOBN(0xe8a3587c, 0x91afa997),
+           TOBN(0xea296c12, 0xab77b7a5), TOBN(0xb5ad49e4, 0x673c0d52)},
+          {TOBN(0x40f9b2b2, 0x7006085a), TOBN(0xa88ff340, 0x87bf6ec2),
+           TOBN(0x978603b1, 0x4e3066a6), TOBN(0xb3f99fc2, 0xb5e486e2)}},
+         {{TOBN(0x07b53f5e, 0xb2e63645), TOBN(0xbe57e547, 0x84c84232),
+           TOBN(0xd779c216, 0x7214d5cf), TOBN(0x617969cd, 0x029a3aca)},
+          {TOBN(0xd17668cd, 0x8a7017a0), TOBN(0x77b4d19a, 0xbe9b7ee8),
+           TOBN(0x58fd0e93, 0x9c161776), TOBN(0xa8c4f4ef, 0xd5968a72)}},
+         {{TOBN(0x296071cc, 0x67b3de77), TOBN(0xae3c0b8e, 0x634f7905),
+           TOBN(0x67e440c2, 0x8a7100c9), TOBN(0xbb8c3c1b, 0xeb4b9b42)},
+          {TOBN(0x6d71e8ea, 0xc51b3583), TOBN(0x7591f5af, 0x9525e642),
+           TOBN(0xf73a2f7b, 0x13f509f3), TOBN(0x618487aa, 0x5619ac9b)}},
+         {{TOBN(0x3a72e5f7, 0x9d61718a), TOBN(0x00413bcc, 0x7592d28c),
+           TOBN(0x7d9b11d3, 0x963c35cf), TOBN(0x77623bcf, 0xb90a46ed)},
+          {TOBN(0xdeef273b, 0xdcdd2a50), TOBN(0x4a741f9b, 0x0601846e),
+           TOBN(0x33b89e51, 0x0ec6e929), TOBN(0xcb02319f, 0x8b7f22cd)}},
+         {{TOBN(0xbbe1500d, 0x084bae24), TOBN(0x2f0ae8d7, 0x343d2693),
+           TOBN(0xacffb5f2, 0x7cdef811), TOBN(0xaa0c030a, 0x263fb94f)},
+          {TOBN(0x6eef0d61, 0xa0f442de), TOBN(0xf92e1817, 0x27b139d3),
+           TOBN(0x1ae6deb7, 0x0ad8bc28), TOBN(0xa89e38dc, 0xc0514130)}},
+         {{TOBN(0x81eeb865, 0xd2fdca23), TOBN(0x5a15ee08, 0xcc8ef895),
+           TOBN(0x768fa10a, 0x01905614), TOBN(0xeff5b8ef, 0x880ee19b)},
+          {TOBN(0xf0c0cabb, 0xcb1c8a0e), TOBN(0x2e1ee9cd, 0xb8c838f9),
+           TOBN(0x0587d8b8, 0x8a4a14c0), TOBN(0xf6f27896, 0x2ff698e5)}},
+         {{TOBN(0xed38ef1c, 0x89ee6256), TOBN(0xf44ee1fe, 0x6b353b45),
+           TOBN(0x9115c0c7, 0x70e903b3), TOBN(0xc78ec0a1, 0x818f31df)},
+          {TOBN(0x6c003324, 0xb7dccbc6), TOBN(0xd96dd1f3, 0x163bbc25),
+           TOBN(0x33aa82dd, 0x5cedd805), TOBN(0x123aae4f, 0x7f7eb2f1)}},
+         {{TOBN(0x1723fcf5, 0xa26262cd), TOBN(0x1f7f4d5d, 0x0060ebd5),
+           TOBN(0xf19c5c01, 0xb2eaa3af), TOBN(0x2ccb9b14, 0x9790accf)},
+          {TOBN(0x1f9c1cad, 0x52324aa6), TOBN(0x63200526, 0x7247df54),
+           TOBN(0x5732fe42, 0xbac96f82), TOBN(0x52fe771f, 0x01a1c384)}},
+         {{TOBN(0x546ca13d, 0xb1001684), TOBN(0xb56b4eee, 0xa1709f75),
+           TOBN(0x266545a9, 0xd5db8672), TOBN(0xed971c90, 0x1e8f3cfb)},
+          {TOBN(0x4e7d8691, 0xe3a07b29), TOBN(0x7570d9ec, 0xe4b696b9),
+           TOBN(0xdc5fa067, 0x7bc7e9ae), TOBN(0x68b44caf, 0xc82c4844)}},
+         {{TOBN(0x519d34b3, 0xbf44da80), TOBN(0x283834f9, 0x5ab32e66),
+           TOBN(0x6e608797, 0x6278a000), TOBN(0x1e62960e, 0x627312f6)},
+          {TOBN(0x9b87b27b, 0xe6901c55), TOBN(0x80e78538, 0x24fdbc1f),
+           TOBN(0xbbbc0951, 0x2facc27d), TOBN(0x06394239, 0xac143b5a)}},
+         {{TOBN(0x35bb4a40, 0x376c1944), TOBN(0x7cb62694, 0x63da1511),
+           TOBN(0xafd29161, 0xb7148a3b), TOBN(0xa6f9d9ed, 0x4e2ea2ee)},
+          {TOBN(0x15dc2ca2, 0x880dd212), TOBN(0x903c3813, 0xa61139a9),
+           TOBN(0x2aa7b46d, 0x6c0f8785), TOBN(0x36ce2871, 0x901c60ff)}},
+         {{TOBN(0xc683b028, 0xe10d9c12), TOBN(0x7573baa2, 0x032f33d3),
+           TOBN(0x87a9b1f6, 0x67a31b58), TOBN(0xfd3ed11a, 0xf4ffae12)},
+          {TOBN(0x83dcaa9a, 0x0cb2748e), TOBN(0x8239f018, 0x5d6fdf16),
+           TOBN(0xba67b49c, 0x72753941), TOBN(0x2beec455, 0xc321cb36)}},
+         {{TOBN(0x88015606, 0x3f8b84ce), TOBN(0x76417083, 0x8d38c86f),
+           TOBN(0x054f1ca7, 0x598953dd), TOBN(0xc939e110, 0x4e8e7429)},
+          {TOBN(0x9b1ac2b3, 0x5a914f2f), TOBN(0x39e35ed3, 0xe74b8f9c),
+           TOBN(0xd0debdb2, 0x781b2fb0), TOBN(0x1585638f, 0x2d997ba2)}},
+         {{TOBN(0x9c4b646e, 0x9e2fce99), TOBN(0x68a21081, 0x1e80857f),
+           TOBN(0x06d54e44, 0x3643b52a), TOBN(0xde8d6d63, 0x0d8eb843)},
+          {TOBN(0x70321563, 0x42146a0a), TOBN(0x8ba826f2, 0x5eaa3622),
+           TOBN(0x227a58bd, 0x86138787), TOBN(0x43b6c03c, 0x10281d37)}},
+         {{TOBN(0x6326afbb, 0xb54dde39), TOBN(0x744e5e8a, 0xdb6f2d5f),
+           TOBN(0x48b2a99a, 0xcff158e1), TOBN(0xa93c8fa0, 0xef87918f)},
+          {TOBN(0x2182f956, 0xde058c5c), TOBN(0x216235d2, 0x936f9e7a),
+           TOBN(0xace0c0db, 0xd2e31e67), TOBN(0xc96449bf, 0xf23ac3e7)}},
+         {{TOBN(0x7e9a2874, 0x170693bd), TOBN(0xa28e14fd, 0xa45e6335),
+           TOBN(0x5757f6b3, 0x56427344), TOBN(0x822e4556, 0xacf8edf9)},
+          {TOBN(0x2b7a6ee2, 0xe6a285cd), TOBN(0x5866f211, 0xa9df3af0),
+           TOBN(0x40dde2dd, 0xf845b844), TOBN(0x986c3726, 0x110e5e49)}},
+         {{TOBN(0x73680c2a, 0xf7172277), TOBN(0x57b94f0f, 0x0cccb244),
+           TOBN(0xbdff7267, 0x2d438ca7), TOBN(0xbad1ce11, 0xcf4663fd)},
+          {TOBN(0x9813ed9d, 0xd8f71cae), TOBN(0xf43272a6, 0x961fdaa6),
+           TOBN(0xbeff0119, 0xbd6d1637), TOBN(0xfebc4f91, 0x30361978)}},
+         {{TOBN(0x02b37a95, 0x2f41deff), TOBN(0x0e44a59a, 0xe63b89b7),
+           TOBN(0x673257dc, 0x143ff951), TOBN(0x19c02205, 0xd752baf4)},
+          {TOBN(0x46c23069, 0xc4b7d692), TOBN(0x2e6392c3, 0xfd1502ac),
+           TOBN(0x6057b1a2, 0x1b220846), TOBN(0xe51ff946, 0x0c1b5b63)}}},
+        {{{TOBN(0x6e85cb51, 0x566c5c43), TOBN(0xcff9c919, 0x3597f046),
+           TOBN(0x9354e90c, 0x4994d94a), TOBN(0xe0a39332, 0x2147927d)},
+          {TOBN(0x8427fac1, 0x0dc1eb2b), TOBN(0x88cfd8c2, 0x2ff319fa),
+           TOBN(0xe2d4e684, 0x01965274), TOBN(0xfa2e067d, 0x67aaa746)}},
+         {{TOBN(0xb6d92a7f, 0x3e5f9f11), TOBN(0x9afe153a, 0xd6cb3b8e),
+           TOBN(0x4d1a6dd7, 0xddf800bd), TOBN(0xf6c13cc0, 0xcaf17e19)},
+          {TOBN(0x15f6c58e, 0x325fc3ee), TOBN(0x71095400, 0xa31dc3b2),
+           TOBN(0x168e7c07, 0xafa3d3e7), TOBN(0x3f8417a1, 0x94c7ae2d)}},
+         {{TOBN(0xec234772, 0x813b230d), TOBN(0x634d0f5f, 0x17344427),
+           TOBN(0x11548ab1, 0xd77fc56a), TOBN(0x7fab1750, 0xce06af77)},
+          {TOBN(0xb62c10a7, 0x4f7c4f83), TOBN(0xa7d2edc4, 0x220a67d9),
+           TOBN(0x1c404170, 0x921209a0), TOBN(0x0b9815a0, 0xface59f0)}},
+         {{TOBN(0x2842589b, 0x319540c3), TOBN(0x18490f59, 0xa283d6f8),
+           TOBN(0xa2731f84, 0xdaae9fcb), TOBN(0x3db6d960, 0xc3683ba0)},
+          {TOBN(0xc85c63bb, 0x14611069), TOBN(0xb19436af, 0x0788bf05),
+           TOBN(0x905459df, 0x347460d2), TOBN(0x73f6e094, 0xe11a7db1)}},
+         {{TOBN(0xdc7f938e, 0xb6357f37), TOBN(0xc5d00f79, 0x2bd8aa62),
+           TOBN(0xc878dcb9, 0x2ca979fc), TOBN(0x37e83ed9, 0xeb023a99)},
+          {TOBN(0x6b23e273, 0x1560bf3d), TOBN(0x1086e459, 0x1d0fae61),
+           TOBN(0x78248316, 0x9a9414bd), TOBN(0x1b956bc0, 0xf0ea9ea1)}},
+         {{TOBN(0x7b85bb91, 0xc31b9c38), TOBN(0x0c5aa90b, 0x48ef57b5),
+           TOBN(0xdedeb169, 0xaf3bab6f), TOBN(0xe610ad73, 0x2d373685)},
+          {TOBN(0xf13870df, 0x02ba8e15), TOBN(0x0337edb6, 0x8ca7f771),
+           TOBN(0xe4acf747, 0xb62c036c), TOBN(0xd921d576, 0xb6b94e81)}},
+         {{TOBN(0xdbc86439, 0x2c422f7a), TOBN(0xfb635362, 0xed348898),
+           TOBN(0x83084668, 0xc45bfcd1), TOBN(0xc357c9e3, 0x2b315e11)},
+          {TOBN(0xb173b540, 0x5b2e5b8c), TOBN(0x7e946931, 0xe102b9a4),
+           TOBN(0x17c890eb, 0x7b0fb199), TOBN(0xec225a83, 0xd61b662b)}},
+         {{TOBN(0xf306a3c8, 0xee3c76cb), TOBN(0x3cf11623, 0xd32a1f6e),
+           TOBN(0xe6d5ab64, 0x6863e956), TOBN(0x3b8a4cbe, 0x5c005c26)},
+          {TOBN(0xdcd529a5, 0x9ce6bb27), TOBN(0xc4afaa52, 0x04d4b16f),
+           TOBN(0xb0624a26, 0x7923798d), TOBN(0x85e56df6, 0x6b307fab)}},
+         {{TOBN(0x0281893c, 0x2bf29698), TOBN(0x91fc19a4, 0xd7ce7603),
+           TOBN(0x75a5dca3, 0xad9a558f), TOBN(0x40ceb3fa, 0x4d50bf77)},
+          {TOBN(0x1baf6060, 0xbc9ba369), TOBN(0x927e1037, 0x597888c2),
+           TOBN(0xd936bf19, 0x86a34c07), TOBN(0xd4cf10c1, 0xc34ae980)}},
+         {{TOBN(0x3a3e5334, 0x859dd614), TOBN(0x9c475b5b, 0x18d0c8ee),
+           TOBN(0x63080d1f, 0x07cd51d5), TOBN(0xc9c0d0a6, 0xb88b4326)},
+          {TOBN(0x1ac98691, 0xc234296f), TOBN(0x2a0a83a4, 0x94887fb6),
+           TOBN(0x56511427, 0x0cea9cf2), TOBN(0x5230a6e8, 0xa24802f5)}},
+         {{TOBN(0xf7a2bf0f, 0x72e3d5c1), TOBN(0x37717446, 0x4f21439e),
+           TOBN(0xfedcbf25, 0x9ce30334), TOBN(0xe0030a78, 0x7ce202f9)},
+          {TOBN(0x6f2d9ebf, 0x1202e9ca), TOBN(0xe79dde6c, 0x75e6e591),
+           TOBN(0xf52072af, 0xf1dac4f8), TOBN(0x6c8d087e, 0xbb9b404d)}},
+         {{TOBN(0xad0fc73d, 0xbce913af), TOBN(0x909e587b, 0x458a07cb),
+           TOBN(0x1300da84, 0xd4f00c8a), TOBN(0x425cd048, 0xb54466ac)},
+          {TOBN(0xb59cb9be, 0x90e9d8bf), TOBN(0x991616db, 0x3e431b0e),
+           TOBN(0xd3aa117a, 0x531aecff), TOBN(0x91af92d3, 0x59f4dc3b)}},
+         {{TOBN(0x9b1ec292, 0xe93fda29), TOBN(0x76bb6c17, 0xe97d91bc),
+           TOBN(0x7509d95f, 0xaface1e6), TOBN(0x3653fe47, 0xbe855ae3)},
+          {TOBN(0x73180b28, 0x0f680e75), TOBN(0x75eefd1b, 0xeeb6c26c),
+           TOBN(0xa4cdf29f, 0xb66d4236), TOBN(0x2d70a997, 0x6b5821d8)}},
+         {{TOBN(0x7a3ee207, 0x20445c36), TOBN(0x71d1ac82, 0x59877174),
+           TOBN(0x0fc539f7, 0x949f73e9), TOBN(0xd05cf3d7, 0x982e3081)},
+          {TOBN(0x8758e20b, 0x7b1c7129), TOBN(0xffadcc20, 0x569e61f2),
+           TOBN(0xb05d3a2f, 0x59544c2d), TOBN(0xbe16f5c1, 0x9fff5e53)}},
+         {{TOBN(0x73cf65b8, 0xaad58135), TOBN(0x622c2119, 0x037aa5be),
+           TOBN(0x79373b3f, 0x646fd6a0), TOBN(0x0e029db5, 0x0d3978cf)},
+          {TOBN(0x8bdfc437, 0x94fba037), TOBN(0xaefbd687, 0x620797a6),
+           TOBN(0x3fa5382b, 0xbd30d38e), TOBN(0x7627cfbf, 0x585d7464)}},
+         {{TOBN(0xb2330fef, 0x4e4ca463), TOBN(0xbcef7287, 0x3566cc63),
+           TOBN(0xd161d2ca, 0xcf780900), TOBN(0x135dc539, 0x5b54827d)},
+          {TOBN(0x638f052e, 0x27bf1bc6), TOBN(0x10a224f0, 0x07dfa06c),
+           TOBN(0xe973586d, 0x6d3321da), TOBN(0x8b0c5738, 0x26152c8f)}},
+         {{TOBN(0x07ef4f2a, 0x34606074), TOBN(0x80fe7fe8, 0xa0f7047a),
+           TOBN(0x3d1a8152, 0xe1a0e306), TOBN(0x32cf43d8, 0x88da5222)},
+          {TOBN(0xbf89a95f, 0x5f02ffe6), TOBN(0x3d9eb9a4, 0x806ad3ea),
+           TOBN(0x012c17bb, 0x79c8e55e), TOBN(0xfdcd1a74, 0x99c81dac)}},
+         {{TOBN(0x7043178b, 0xb9556098), TOBN(0x4090a1df, 0x801c3886),
+           TOBN(0x759800ff, 0x9b67b912), TOBN(0x3e5c0304, 0x232620c8)},
+          {TOBN(0x4b9d3c4b, 0x70dceeca), TOBN(0xbb2d3c15, 0x181f648e),
+           TOBN(0xf981d837, 0x6e33345c), TOBN(0xb626289b, 0x0cf2297a)}},
+         {{TOBN(0x766ac659, 0x8baebdcf), TOBN(0x1a28ae09, 0x75df01e5),
+           TOBN(0xb71283da, 0x375876d8), TOBN(0x4865a96d, 0x607b9800)},
+          {TOBN(0x25dd1bcd, 0x237936b2), TOBN(0x332f4f4b, 0x60417494),
+           TOBN(0xd0923d68, 0x370a2147), TOBN(0x497f5dfb, 0xdc842203)}},
+         {{TOBN(0x9dc74cbd, 0x32be5e0f), TOBN(0x7475bcb7, 0x17a01375),
+           TOBN(0x438477c9, 0x50d872b1), TOBN(0xcec67879, 0xffe1d63d)},
+          {TOBN(0x9b006014, 0xd8578c70), TOBN(0xc9ad99a8, 0x78bb6b8b),
+           TOBN(0x6799008e, 0x11fb3806), TOBN(0xcfe81435, 0xcd44cab3)}},
+         {{TOBN(0xa2ee1582, 0x2f4fb344), TOBN(0xb8823450, 0x483fa6eb),
+           TOBN(0x622d323d, 0x652c7749), TOBN(0xd8474a98, 0xbeb0a15b)},
+          {TOBN(0xe43c154d, 0x5d1c00d0), TOBN(0x7fd581d9, 0x0e3e7aac),
+           TOBN(0x2b44c619, 0x2525ddf8), TOBN(0x67a033eb, 0xb8ae9739)}},
+         {{TOBN(0x113ffec1, 0x9ef2d2e4), TOBN(0x1bf6767e, 0xd5a0ea7f),
+           TOBN(0x57fff75e, 0x03714c0a), TOBN(0xa23c422e, 0x0a23e9ee)},
+          {TOBN(0xdd5f6b2d, 0x540f83af), TOBN(0xc2c2c27e, 0x55ea46a7),
+           TOBN(0xeb6b4246, 0x672a1208), TOBN(0xd13599f7, 0xae634f7a)}},
+         {{TOBN(0xcf914b5c, 0xd7b32c6e), TOBN(0x61a5a640, 0xeaf61814),
+           TOBN(0x8dc3df8b, 0x208a1bbb), TOBN(0xef627fd6, 0xb6d79aa5)},
+          {TOBN(0x44232ffc, 0xc4c86bc8), TOBN(0xe6f9231b, 0x061539fe),
+           TOBN(0x1d04f25a, 0x958b9533), TOBN(0x180cf934, 0x49e8c885)}},
+         {{TOBN(0x89689595, 0x9884aaf7), TOBN(0xb1959be3, 0x07b348a6),
+           TOBN(0x96250e57, 0x3c147c87), TOBN(0xae0efb3a, 0xdd0c61f8)},
+          {TOBN(0xed00745e, 0xca8c325e), TOBN(0x3c911696, 0xecff3f70),
+           TOBN(0x73acbc65, 0x319ad41d), TOBN(0x7b01a020, 0xf0b1c7ef)}},
+         {{TOBN(0xea32b293, 0x63a1483f), TOBN(0x89eabe71, 0x7a248f96),
+           TOBN(0x9c6231d3, 0x343157e5), TOBN(0x93a375e5, 0xdf3c546d)},
+          {TOBN(0xe76e9343, 0x6a2afe69), TOBN(0xc4f89100, 0xe166c88e),
+           TOBN(0x248efd0d, 0x4f872093), TOBN(0xae0eb3ea, 0x8fe0ea61)}},
+         {{TOBN(0xaf89790d, 0x9d79046e), TOBN(0x4d650f2d, 0x6cee0976),
+           TOBN(0xa3935d9a, 0x43071eca), TOBN(0x66fcd2c9, 0x283b0bfe)},
+          {TOBN(0x0e665eb5, 0x696605f1), TOBN(0xe77e5d07, 0xa54cd38d),
+           TOBN(0x90ee050a, 0x43d950cf), TOBN(0x86ddebda, 0xd32e69b5)}},
+         {{TOBN(0x6ad94a3d, 0xfddf7415), TOBN(0xf7fa1309, 0x3f6e8d5a),
+           TOBN(0xc4831d1d, 0xe9957f75), TOBN(0x7de28501, 0xd5817447)},
+          {TOBN(0x6f1d7078, 0x9e2aeb6b), TOBN(0xba2b9ff4, 0xf67a53c2),
+           TOBN(0x36963767, 0xdf9defc3), TOBN(0x479deed3, 0x0d38022c)}},
+         {{TOBN(0xd2edb89b, 0x3a8631e8), TOBN(0x8de855de, 0x7a213746),
+           TOBN(0xb2056cb7, 0xb00c5f11), TOBN(0xdeaefbd0, 0x2c9b85e4)},
+          {TOBN(0x03f39a8d, 0xd150892d), TOBN(0x37b84686, 0x218b7985),
+           TOBN(0x36296dd8, 0xb7375f1a), TOBN(0x472cd4b1, 0xb78e898e)}},
+         {{TOBN(0x15dff651, 0xe9f05de9), TOBN(0xd4045069, 0x2ce98ba9),
+           TOBN(0x8466a7ae, 0x9b38024c), TOBN(0xb910e700, 0xe5a6b5ef)},
+          {TOBN(0xae1c56ea, 0xb3aa8f0d), TOBN(0xbab2a507, 0x7eee74a6),
+           TOBN(0x0dca11e2, 0x4b4c4620), TOBN(0xfd896e2e, 0x4c47d1f4)}},
+         {{TOBN(0xeb45ae53, 0x308fbd93), TOBN(0x46cd5a2e, 0x02c36fda),
+           TOBN(0x6a3d4e90, 0xbaa48385), TOBN(0xdd55e62e, 0x9dbe9960)},
+          {TOBN(0xa1406aa0, 0x2a81ede7), TOBN(0x6860dd14, 0xf9274ea7),
+           TOBN(0xcfdcb0c2, 0x80414f86), TOBN(0xff410b10, 0x22f94327)}},
+         {{TOBN(0x5a33cc38, 0x49ad467b), TOBN(0xefb48b6c, 0x0a7335f1),
+           TOBN(0x14fb54a4, 0xb153a360), TOBN(0x604aa9d2, 0xb52469cc)},
+          {TOBN(0x5e9dc486, 0x754e48e9), TOBN(0x693cb455, 0x37471e8e),
+           TOBN(0xfb2fd7cd, 0x8d3b37b6), TOBN(0x63345e16, 0xcf09ff07)}},
+         {{TOBN(0x9910ba6b, 0x23a5d896), TOBN(0x1fe19e35, 0x7fe4364e),
+           TOBN(0x6e1da8c3, 0x9a33c677), TOBN(0x15b4488b, 0x29fd9fd0)},
+          {TOBN(0x1f439254, 0x1a1f22bf), TOBN(0x920a8a70, 0xab8163e8),
+           TOBN(0x3fd1b249, 0x07e5658e), TOBN(0xf2c4f79c, 0xb6ec839b)}},
+         {{TOBN(0x1abbc3d0, 0x4aa38d1b), TOBN(0x3b0db35c, 0xb5d9510e),
+           TOBN(0x1754ac78, 0x3e60dec0), TOBN(0x53272fd7, 0xea099b33)},
+          {TOBN(0x5fb0494f, 0x07a8e107), TOBN(0x4a89e137, 0x6a8191fa),
+           TOBN(0xa113b7f6, 0x3c4ad544), TOBN(0x88a2e909, 0x6cb9897b)}},
+         {{TOBN(0x17d55de3, 0xb44a3f84), TOBN(0xacb2f344, 0x17c6c690),
+           TOBN(0x32088168, 0x10232390), TOBN(0xf2e8a61f, 0x6c733bf7)},
+          {TOBN(0xa774aab6, 0x9c2d7652), TOBN(0xfb5307e3, 0xed95c5bc),
+           TOBN(0xa05c73c2, 0x4981f110), TOBN(0x1baae31c, 0xa39458c9)}},
+         {{TOBN(0x1def185b, 0xcbea62e7), TOBN(0xe8ac9eae, 0xeaf63059),
+           TOBN(0x098a8cfd, 0x9921851c), TOBN(0xd959c3f1, 0x3abe2f5b)},
+          {TOBN(0xa4f19525, 0x20e40ae5), TOBN(0x320789e3, 0x07a24aa1),
+           TOBN(0x259e6927, 0x7392b2bc), TOBN(0x58f6c667, 0x1918668b)}},
+         {{TOBN(0xce1db2bb, 0xc55d2d8b), TOBN(0x41d58bb7, 0xf4f6ca56),
+           TOBN(0x7650b680, 0x8f877614), TOBN(0x905e16ba, 0xf4c349ed)},
+          {TOBN(0xed415140, 0xf661acac), TOBN(0x3b8784f0, 0xcb2270af),
+           TOBN(0x3bc280ac, 0x8a402cba), TOBN(0xd53f7146, 0x0937921a)}},
+         {{TOBN(0xc03c8ee5, 0xe5681e83), TOBN(0x62126105, 0xf6ac9e4a),
+           TOBN(0x9503a53f, 0x936b1a38), TOBN(0x3d45e2d4, 0x782fecbd)},
+          {TOBN(0x69a5c439, 0x76e8ae98), TOBN(0xb53b2eeb, 0xbfb4b00e),
+           TOBN(0xf1674712, 0x72386c89), TOBN(0x30ca34a2, 0x4268bce4)}},
+         {{TOBN(0x7f1ed86c, 0x78341730), TOBN(0x8ef5beb8, 0xb525e248),
+           TOBN(0xbbc489fd, 0xb74fbf38), TOBN(0x38a92a0e, 0x91a0b382)},
+          {TOBN(0x7a77ba3f, 0x22433ccf), TOBN(0xde8362d6, 0xa29f05a9),
+           TOBN(0x7f6a30ea, 0x61189afc), TOBN(0x693b5505, 0x59ef114f)}},
+         {{TOBN(0x50266bc0, 0xcd1797a1), TOBN(0xea17b47e, 0xf4b7af2d),
+           TOBN(0xd6c4025c, 0x3df9483e), TOBN(0x8cbb9d9f, 0xa37b18c9)},
+          {TOBN(0x91cbfd9c, 0x4d8424cf), TOBN(0xdb7048f1, 0xab1c3506),
+           TOBN(0x9eaf641f, 0x028206a3), TOBN(0xf986f3f9, 0x25bdf6ce)}},
+         {{TOBN(0x262143b5, 0x224c08dc), TOBN(0x2bbb09b4, 0x81b50c91),
+           TOBN(0xc16ed709, 0xaca8c84f), TOBN(0xa6210d9d, 0xb2850ca8)},
+          {TOBN(0x6d8df67a, 0x09cb54d6), TOBN(0x91eef6e0, 0x500919a4),
+           TOBN(0x90f61381, 0x0f132857), TOBN(0x9acede47, 0xf8d5028b)}},
+         {{TOBN(0x844d1b71, 0x90b771c3), TOBN(0x563b71e4, 0xba6426be),
+           TOBN(0x2efa2e83, 0xbdb802ff), TOBN(0x3410cbab, 0xab5b4a41)},
+          {TOBN(0x555b2d26, 0x30da84dd), TOBN(0xd0711ae9, 0xee1cc29a),
+           TOBN(0xcf3e8c60, 0x2f547792), TOBN(0x03d7d5de, 0xdc678b35)}},
+         {{TOBN(0x071a2fa8, 0xced806b8), TOBN(0x222e6134, 0x697f1478),
+           TOBN(0xdc16fd5d, 0xabfcdbbf), TOBN(0x44912ebf, 0x121b53b8)},
+          {TOBN(0xac943674, 0x2496c27c), TOBN(0x8ea3176c, 0x1ffc26b0),
+           TOBN(0xb6e224ac, 0x13debf2c), TOBN(0x524cc235, 0xf372a832)}},
+         {{TOBN(0xd706e1d8, 0x9f6f1b18), TOBN(0x2552f005, 0x44cce35b),
+           TOBN(0x8c8326c2, 0xa88e31fc), TOBN(0xb5468b2c, 0xf9552047)},
+          {TOBN(0xce683e88, 0x3ff90f2b), TOBN(0x77947bdf, 0x2f0a5423),
+           TOBN(0xd0a1b28b, 0xed56e328), TOBN(0xaee35253, 0xc20134ac)}},
+         {{TOBN(0x7e98367d, 0x3567962f), TOBN(0x379ed61f, 0x8188bffb),
+           TOBN(0x73bba348, 0xfaf130a1), TOBN(0x6c1f75e1, 0x904ed734)},
+          {TOBN(0x18956642, 0x3b4a79fc), TOBN(0xf20bc83d, 0x54ef4493),
+           TOBN(0x836d425d, 0x9111eca1), TOBN(0xe5b5c318, 0x009a8dcf)}},
+         {{TOBN(0x3360b25d, 0x13221bc5), TOBN(0x707baad2, 0x6b3eeaf7),
+           TOBN(0xd7279ed8, 0x743a95a1), TOBN(0x7450a875, 0x969e809f)},
+          {TOBN(0x32b6bd53, 0xe5d0338f), TOBN(0x1e77f7af, 0x2b883bbc),
+           TOBN(0x90da12cc, 0x1063ecd0), TOBN(0xe2697b58, 0xc315be47)}},
+         {{TOBN(0x2771a5bd, 0xda85d534), TOBN(0x53e78c1f, 0xff980eea),
+           TOBN(0xadf1cf84, 0x900385e7), TOBN(0x7d3b14f6, 0xc9387b62)},
+          {TOBN(0x170e74b0, 0xcb8f2bd2), TOBN(0x2d50b486, 0x827fa993),
+           TOBN(0xcdbe8c9a, 0xf6f32bab), TOBN(0x55e906b0, 0xc3b93ab8)}},
+         {{TOBN(0x747f22fc, 0x8fe280d1), TOBN(0xcd8e0de5, 0xb2e114ab),
+           TOBN(0x5ab7dbeb, 0xe10b68b0), TOBN(0x9dc63a9c, 0xa480d4b2)},
+          {TOBN(0x78d4bc3b, 0x4be1495f), TOBN(0x25eb3db8, 0x9359122d),
+           TOBN(0x3f8ac05b, 0x0809cbdc), TOBN(0xbf4187bb, 0xd37c702f)}},
+         {{TOBN(0x84cea069, 0x1416a6a5), TOBN(0x8f860c79, 0x43ef881c),
+           TOBN(0x41311f8a, 0x38038a5d), TOBN(0xe78c2ec0, 0xfc612067)},
+          {TOBN(0x494d2e81, 0x5ad73581), TOBN(0xb4cc9e00, 0x59604097),
+           TOBN(0xff558aec, 0xf3612cba), TOBN(0x35beef7a, 0x9e36c39e)}},
+         {{TOBN(0x1845c7cf, 0xdbcf41b9), TOBN(0x5703662a, 0xaea997c0),
+           TOBN(0x8b925afe, 0xe402f6d8), TOBN(0xd0a1b1ae, 0x4dd72162)},
+          {TOBN(0x9f47b375, 0x03c41c4b), TOBN(0xa023829b, 0x0391d042),
+           TOBN(0x5f5045c3, 0x503b8b0a), TOBN(0x123c2688, 0x98c010e5)}},
+         {{TOBN(0x324ec0cc, 0x36ba06ee), TOBN(0xface3115, 0x3dd2cc0c),
+           TOBN(0xb364f3be, 0xf333e91f), TOBN(0xef8aff73, 0x28e832b0)},
+          {TOBN(0x1e9bad04, 0x2d05841b), TOBN(0x42f0e3df, 0x356a21e2),
+           TOBN(0xa3270bcb, 0x4add627e), TOBN(0xb09a8158, 0xd322e711)}},
+         {{TOBN(0x86e326a1, 0x0fee104a), TOBN(0xad7788f8, 0x3703f65d),
+           TOBN(0x7e765430, 0x47bc4833), TOBN(0x6cee582b, 0x2b9b893a)},
+          {TOBN(0x9cd2a167, 0xe8f55a7b), TOBN(0xefbee3c6, 0xd9e4190d),
+           TOBN(0x33ee7185, 0xd40c2e9d), TOBN(0x844cc9c5, 0xa380b548)}},
+         {{TOBN(0x323f8ecd, 0x66926e04), TOBN(0x0001e38f, 0x8110c1ba),
+           TOBN(0x8dbcac12, 0xfc6a7f07), TOBN(0xd65e1d58, 0x0cec0827)},
+          {TOBN(0xd2cd4141, 0xbe76ca2d), TOBN(0x7895cf5c, 0xe892f33a),
+           TOBN(0x956d230d, 0x367139d2), TOBN(0xa91abd3e, 0xd012c4c1)}},
+         {{TOBN(0x34fa4883, 0x87eb36bf), TOBN(0xc5f07102, 0x914b8fb4),
+           TOBN(0x90f0e579, 0xadb9c95f), TOBN(0xfe6ea8cb, 0x28888195)},
+          {TOBN(0x7b9b5065, 0xedfa9284), TOBN(0x6c510bd2, 0x2b8c8d65),
+           TOBN(0xd7b8ebef, 0xcbe8aafd), TOBN(0xedb3af98, 0x96b1da07)}},
+         {{TOBN(0x28ff779d, 0x6295d426), TOBN(0x0c4f6ac7, 0x3fa3ad7b),
+           TOBN(0xec44d054, 0x8b8e2604), TOBN(0x9b32a66d, 0x8b0050e1)},
+          {TOBN(0x1f943366, 0xf0476ce2), TOBN(0x7554d953, 0xa602c7b4),
+           TOBN(0xbe35aca6, 0x524f2809), TOBN(0xb6881229, 0xfd4edbea)}},
+         {{TOBN(0xe8cd0c8f, 0x508efb63), TOBN(0x9eb5b5c8, 0x6abcefc7),
+           TOBN(0xf5621f5f, 0xb441ab4f), TOBN(0x79e6c046, 0xb76a2b22)},
+          {TOBN(0x74a4792c, 0xe37a1f69), TOBN(0xcbd252cb, 0x03542b60),
+           TOBN(0x785f65d5, 0xb3c20bd3), TOBN(0x8dea6143, 0x4fabc60c)}},
+         {{TOBN(0x45e21446, 0xde673629), TOBN(0x57f7aa1e, 0x703c2d21),
+           TOBN(0xa0e99b7f, 0x98c868c7), TOBN(0x4e42f66d, 0x8b641676)},
+          {TOBN(0x602884dc, 0x91077896), TOBN(0xa0d690cf, 0xc2c9885b),
+           TOBN(0xfeb4da33, 0x3b9a5187), TOBN(0x5f789598, 0x153c87ee)}},
+         {{TOBN(0x2192dd47, 0x52b16dba), TOBN(0xdeefc0e6, 0x3524c1b1),
+           TOBN(0x465ea76e, 0xe4383693), TOBN(0x79401711, 0x361b8d98)},
+          {TOBN(0xa5f9ace9, 0xf21a15cb), TOBN(0x73d26163, 0xefee9aeb),
+           TOBN(0xcca844b3, 0xe677016c), TOBN(0x6c122b07, 0x57eaee06)}},
+         {{TOBN(0xb782dce7, 0x15f09690), TOBN(0x508b9b12, 0x2dfc0fc9),
+           TOBN(0x9015ab4b, 0x65d89fc6), TOBN(0x5e79dab7, 0xd6d5bb0f)},
+          {TOBN(0x64f021f0, 0x6c775aa2), TOBN(0xdf09d8cc, 0x37c7eca1),
+           TOBN(0x9a761367, 0xef2fa506), TOBN(0xed4ca476, 0x5b81eec6)}},
+         {{TOBN(0x262ede36, 0x10bbb8b5), TOBN(0x0737ce83, 0x0641ada3),
+           TOBN(0x4c94288a, 0xe9831ccc), TOBN(0x487fc1ce, 0x8065e635)},
+          {TOBN(0xb13d7ab3, 0xb8bb3659), TOBN(0xdea5df3e, 0x855e4120),
+           TOBN(0xb9a18573, 0x85eb0244), TOBN(0x1a1b8ea3, 0xa7cfe0a3)}},
+         {{TOBN(0x3b837119, 0x67b0867c), TOBN(0x8d5e0d08, 0x9d364520),
+           TOBN(0x52dccc1e, 0xd930f0e3), TOBN(0xefbbcec7, 0xbf20bbaf)},
+          {TOBN(0x99cffcab, 0x0263ad10), TOBN(0xd8199e6d, 0xfcd18f8a),
+           TOBN(0x64e2773f, 0xe9f10617), TOBN(0x0079e8e1, 0x08704848)}},
+         {{TOBN(0x1169989f, 0x8a342283), TOBN(0x8097799c, 0xa83012e6),
+           TOBN(0xece966cb, 0x8a6a9001), TOBN(0x93b3afef, 0x072ac7fc)},
+          {TOBN(0xe6893a2a, 0x2db3d5ba), TOBN(0x263dc462, 0x89bf4fdc),
+           TOBN(0x8852dfc9, 0xe0396673), TOBN(0x7ac70895, 0x3af362b6)}},
+         {{TOBN(0xbb9cce4d, 0x5c2f342b), TOBN(0xbf80907a, 0xb52d7aae),
+           TOBN(0x97f3d3cd, 0x2161bcd0), TOBN(0xb25b0834, 0x0962744d)},
+          {TOBN(0xc5b18ea5, 0x6c3a1dda), TOBN(0xfe4ec7eb, 0x06c92317),
+           TOBN(0xb787b890, 0xad1c4afe), TOBN(0xdccd9a92, 0x0ede801a)}},
+         {{TOBN(0x9ac6ddda, 0xdb58da1f), TOBN(0x22bbc12f, 0xb8cae6ee),
+           TOBN(0xc6f8bced, 0x815c4a43), TOBN(0x8105a92c, 0xf96480c7)},
+          {TOBN(0x0dc3dbf3, 0x7a859d51), TOBN(0xe3ec7ce6, 0x3041196b),
+           TOBN(0xd9f64b25, 0x0d1067c9), TOBN(0xf2321321, 0x3d1f8dd8)}},
+         {{TOBN(0x8b5c619c, 0x76497ee8), TOBN(0x5d2b0ac6, 0xc717370e),
+           TOBN(0x98204cb6, 0x4fcf68e1), TOBN(0x0bdec211, 0x62bc6792)},
+          {TOBN(0x6973ccef, 0xa63b1011), TOBN(0xf9e3fa97, 0xe0de1ac5),
+           TOBN(0x5efb693e, 0x3d0e0c8b), TOBN(0x037248e9, 0xd2d4fcb4)}}},
+        {{{TOBN(0x80802dc9, 0x1ec34f9e), TOBN(0xd8772d35, 0x33810603),
+           TOBN(0x3f06d66c, 0x530cb4f3), TOBN(0x7be5ed0d, 0xc475c129)},
+          {TOBN(0xcb9e3c19, 0x31e82b10), TOBN(0xc63d2857, 0xc9ff6b4c),
+           TOBN(0xb92118c6, 0x92a1b45e), TOBN(0x0aec4414, 0x7285bbca)}},
+         {{TOBN(0xfc189ae7, 0x1e29a3ef), TOBN(0xcbe906f0, 0x4c93302e),
+           TOBN(0xd0107914, 0xceaae10e), TOBN(0xb7a23f34, 0xb68e19f8)},
+          {TOBN(0xe9d875c2, 0xefd2119d), TOBN(0x03198c6e, 0xfcadc9c8),
+           TOBN(0x65591bf6, 0x4da17113), TOBN(0x3cf0bbf8, 0x3d443038)}},
+         {{TOBN(0xae485bb7, 0x2b724759), TOBN(0x945353e1, 0xb2d4c63a),
+           TOBN(0x82159d07, 0xde7d6f2c), TOBN(0x389caef3, 0x4ec5b109)},
+          {TOBN(0x4a8ebb53, 0xdb65ef14), TOBN(0x2dc2cb7e, 0xdd99de43),
+           TOBN(0x816fa3ed, 0x83f2405f), TOBN(0x73429bb9, 0xc14208a3)}},
+         {{TOBN(0xb618d590, 0xb01e6e27), TOBN(0x047e2ccd, 0xe180b2dc),
+           TOBN(0xd1b299b5, 0x04aea4a9), TOBN(0x412c9e1e, 0x9fa403a4)},
+          {TOBN(0x88d28a36, 0x79407552), TOBN(0x49c50136, 0xf332b8e3),
+           TOBN(0x3a1b6fcc, 0xe668de19), TOBN(0x178851bc, 0x75122b97)}},
+         {{TOBN(0xb1e13752, 0xfb85fa4c), TOBN(0xd61257ce, 0x383c8ce9),
+           TOBN(0xd43da670, 0xd2f74dae), TOBN(0xa35aa23f, 0xbf846bbb)},
+          {TOBN(0x5e74235d, 0x4421fc83), TOBN(0xf6df8ee0, 0xc363473b),
+           TOBN(0x34d7f52a, 0x3c4aa158), TOBN(0x50d05aab, 0x9bc6d22e)}},
+         {{TOBN(0x8c56e735, 0xa64785f4), TOBN(0xbc56637b, 0x5f29cd07),
+           TOBN(0x53b2bb80, 0x3ee35067), TOBN(0x50235a0f, 0xdc919270)},
+          {TOBN(0x191ab6d8, 0xf2c4aa65), TOBN(0xc3475831, 0x8396023b),
+           TOBN(0x80400ba5, 0xf0f805ba), TOBN(0x8881065b, 0x5ec0f80f)}},
+         {{TOBN(0xc370e522, 0xcc1b5e83), TOBN(0xde2d4ad1, 0x860b8bfb),
+           TOBN(0xad364df0, 0x67b256df), TOBN(0x8f12502e, 0xe0138997)},
+          {TOBN(0x503fa0dc, 0x7783920a), TOBN(0xe80014ad, 0xc0bc866a),
+           TOBN(0x3f89b744, 0xd3064ba6), TOBN(0x03511dcd, 0xcba5dba5)}},
+         {{TOBN(0x197dd46d, 0x95a7b1a2), TOBN(0x9c4e7ad6, 0x3c6341fb),
+           TOBN(0x426eca29, 0x484c2ece), TOBN(0x9211e489, 0xde7f4f8a)},
+          {TOBN(0x14997f6e, 0xc78ef1f4), TOBN(0x2b2c0910, 0x06574586),
+           TOBN(0x17286a6e, 0x1c3eede8), TOBN(0x25f92e47, 0x0f60e018)}},
+         {{TOBN(0x805c5646, 0x31890a36), TOBN(0x703ef600, 0x57feea5b),
+           TOBN(0x389f747c, 0xaf3c3030), TOBN(0xe0e5daeb, 0x54dd3739)},
+          {TOBN(0xfe24a4c3, 0xc9c9f155), TOBN(0x7e4bf176, 0xb5393962),
+           TOBN(0x37183de2, 0xaf20bf29), TOBN(0x4a1bd7b5, 0xf95a8c3b)}},
+         {{TOBN(0xa83b9699, 0x46191d3d), TOBN(0x281fc8dd, 0x7b87f257),
+           TOBN(0xb18e2c13, 0x54107588), TOBN(0x6372def7, 0x9b2bafe8)},
+          {TOBN(0xdaf4bb48, 0x0d8972ca), TOBN(0x3f2dd4b7, 0x56167a3f),
+           TOBN(0x1eace32d, 0x84310cf4), TOBN(0xe3bcefaf, 0xe42700aa)}},
+         {{TOBN(0x5fe5691e, 0xd785e73d), TOBN(0xa5db5ab6, 0x2ea60467),
+           TOBN(0x02e23d41, 0xdfc6514a), TOBN(0x35e8048e, 0xe03c3665)},
+          {TOBN(0x3f8b118f, 0x1adaa0f8), TOBN(0x28ec3b45, 0x84ce1a5a),
+           TOBN(0xe8cacc6e, 0x2c6646b8), TOBN(0x1343d185, 0xdbd0e40f)}},
+         {{TOBN(0xe5d7f844, 0xcaaa358c), TOBN(0x1a1db7e4, 0x9924182a),
+           TOBN(0xd64cd42d, 0x9c875d9a), TOBN(0xb37b515f, 0x042eeec8)},
+          {TOBN(0x4d4dd409, 0x7b165fbe), TOBN(0xfc322ed9, 0xe206eff3),
+           TOBN(0x7dee4102, 0x59b7e17e), TOBN(0x55a481c0, 0x8236ca00)}},
+         {{TOBN(0x8c885312, 0xc23fc975), TOBN(0x15715806, 0x05d6297b),
+           TOBN(0xa078868e, 0xf78edd39), TOBN(0x956b31e0, 0x03c45e52)},
+          {TOBN(0x470275d5, 0xff7b33a6), TOBN(0xc8d5dc3a, 0x0c7e673f),
+           TOBN(0x419227b4, 0x7e2f2598), TOBN(0x8b37b634, 0x4c14a975)}},
+         {{TOBN(0xd0667ed6, 0x8b11888c), TOBN(0x5e0e8c3e, 0x803e25dc),
+           TOBN(0x34e5d0dc, 0xb987a24a), TOBN(0x9f40ac3b, 0xae920323)},
+          {TOBN(0x5463de95, 0x34e0f63a), TOBN(0xa128bf92, 0x6b6328f9),
+           TOBN(0x491ccd7c, 0xda64f1b7), TOBN(0x7ef1ec27, 0xc47bde35)}},
+         {{TOBN(0xa857240f, 0xa36a2737), TOBN(0x35dc1366, 0x63621bc1),
+           TOBN(0x7a3a6453, 0xd4fb6897), TOBN(0x80f1a439, 0xc929319d)},
+          {TOBN(0xfc18274b, 0xf8cb0ba0), TOBN(0xb0b53766, 0x8078c5eb),
+           TOBN(0xfb0d4924, 0x1e01d0ef), TOBN(0x50d7c67d, 0x372ab09c)}},
+         {{TOBN(0xb4e370af, 0x3aeac968), TOBN(0xe4f7fee9, 0xc4b63266),
+           TOBN(0xb4acd4c2, 0xe3ac5664), TOBN(0xf8910bd2, 0xceb38cbf)},
+          {TOBN(0x1c3ae50c, 0xc9c0726e), TOBN(0x15309569, 0xd97b40bf),
+           TOBN(0x70884b7f, 0xfd5a5a1b), TOBN(0x3890896a, 0xef8314cd)}},
+         {{TOBN(0x58e1515c, 0xa5618c93), TOBN(0xe665432b, 0x77d942d1),
+           TOBN(0xb32181bf, 0xb6f767a8), TOBN(0x753794e8, 0x3a604110)},
+          {TOBN(0x09afeb7c, 0xe8c0dbcc), TOBN(0x31e02613, 0x598673a3),
+           TOBN(0x5d98e557, 0x7d46db00), TOBN(0xfc21fb8c, 0x9d985b28)}},
+         {{TOBN(0xc9040116, 0xb0843e0b), TOBN(0x53b1b3a8, 0x69b04531),
+           TOBN(0xdd1649f0, 0x85d7d830), TOBN(0xbb3bcc87, 0xcb7427e8)},
+          {TOBN(0x77261100, 0xc93dce83), TOBN(0x7e79da61, 0xa1922a2a),
+           TOBN(0x587a2b02, 0xf3149ce8), TOBN(0x147e1384, 0xde92ec83)}},
+         {{TOBN(0x484c83d3, 0xaf077f30), TOBN(0xea78f844, 0x0658b53a),
+           TOBN(0x912076c2, 0x027aec53), TOBN(0xf34714e3, 0x93c8177d)},
+          {TOBN(0x37ef5d15, 0xc2376c84), TOBN(0x8315b659, 0x3d1aa783),
+           TOBN(0x3a75c484, 0xef852a90), TOBN(0x0ba0c58a, 0x16086bd4)}},
+         {{TOBN(0x29688d7a, 0x529a6d48), TOBN(0x9c7f250d, 0xc2f19203),
+           TOBN(0x123042fb, 0x682e2df9), TOBN(0x2b7587e7, 0xad8121bc)},
+          {TOBN(0x30fc0233, 0xe0182a65), TOBN(0xb82ecf87, 0xe3e1128a),
+           TOBN(0x71682861, 0x93fb098f), TOBN(0x043e21ae, 0x85e9e6a7)}},
+         {{TOBN(0xab5b49d6, 0x66c834ea), TOBN(0x3be43e18, 0x47414287),
+           TOBN(0xf40fb859, 0x219a2a47), TOBN(0x0e6559e9, 0xcc58df3c)},
+          {TOBN(0xfe1dfe8e, 0x0c6615b4), TOBN(0x14abc8fd, 0x56459d70),
+           TOBN(0x7be0fa8e, 0x05de0386), TOBN(0x8e63ef68, 0xe9035c7c)}},
+         {{TOBN(0x116401b4, 0x53b31e91), TOBN(0x0cba7ad4, 0x4436b4d8),
+           TOBN(0x9151f9a0, 0x107afd66), TOBN(0xafaca8d0, 0x1f0ee4c4)},
+          {TOBN(0x75fe5c1d, 0x9ee9761c), TOBN(0x3497a16b, 0xf0c0588f),
+           TOBN(0x3ee2bebd, 0x0304804c), TOBN(0xa8fb9a60, 0xc2c990b9)}},
+         {{TOBN(0xd14d32fe, 0x39251114), TOBN(0x36bf25bc, 0xcac73366),
+           TOBN(0xc9562c66, 0xdba7495c), TOBN(0x324d301b, 0x46ad348b)},
+          {TOBN(0x9f46620c, 0xd670407e), TOBN(0x0ea8d4f1, 0xe3733a01),
+           TOBN(0xd396d532, 0xb0c324e0), TOBN(0x5b211a0e, 0x03c317cd)}},
+         {{TOBN(0x090d7d20, 0x5ffe7b37), TOBN(0x3b7f3efb, 0x1747d2da),
+           TOBN(0xa2cb525f, 0xb54fc519), TOBN(0x6e220932, 0xf66a971e)},
+          {TOBN(0xddc160df, 0xb486d440), TOBN(0x7fcfec46, 0x3fe13465),
+           TOBN(0x83da7e4e, 0x76e4c151), TOBN(0xd6fa48a1, 0xd8d302b5)}},
+         {{TOBN(0xc6304f26, 0x5872cd88), TOBN(0x806c1d3c, 0x278b90a1),
+           TOBN(0x3553e725, 0xcaf0bc1c), TOBN(0xff59e603, 0xbb9d8d5c)},
+          {TOBN(0xa4550f32, 0x7a0b85dd), TOBN(0xdec5720a, 0x93ecc217),
+           TOBN(0x0b88b741, 0x69d62213), TOBN(0x7212f245, 0x5b365955)}},
+         {{TOBN(0x20764111, 0xb5cae787), TOBN(0x13cb7f58, 0x1dfd3124),
+           TOBN(0x2dca77da, 0x1175aefb), TOBN(0xeb75466b, 0xffaae775)},
+          {TOBN(0x74d76f3b, 0xdb6cff32), TOBN(0x7440f37a, 0x61fcda9a),
+           TOBN(0x1bb3ac92, 0xb525028b), TOBN(0x20fbf8f7, 0xa1975f29)}},
+         {{TOBN(0x982692e1, 0xdf83097f), TOBN(0x28738f6c, 0x554b0800),
+           TOBN(0xdc703717, 0xa2ce2f2f), TOBN(0x7913b93c, 0x40814194)},
+          {TOBN(0x04924593, 0x1fe89636), TOBN(0x7b98443f, 0xf78834a6),
+           TOBN(0x11c6ab01, 0x5114a5a1), TOBN(0x60deb383, 0xffba5f4c)}},
+         {{TOBN(0x4caa54c6, 0x01a982e6), TOBN(0x1dd35e11, 0x3491cd26),
+           TOBN(0x973c315f, 0x7cbd6b05), TOBN(0xcab00775, 0x52494724)},
+          {TOBN(0x04659b1f, 0x6565e15a), TOBN(0xbf30f529, 0x8c8fb026),
+           TOBN(0xfc21641b, 0xa8a0de37), TOBN(0xe9c7a366, 0xfa5e5114)}},
+         {{TOBN(0xdb849ca5, 0x52f03ad8), TOBN(0xc7e8dbe9, 0x024e35c0),
+           TOBN(0xa1a2bbac, 0xcfc3c789), TOBN(0xbf733e7d, 0x9c26f262)},
+          {TOBN(0x882ffbf5, 0xb8444823), TOBN(0xb7224e88, 0x6bf8483b),
+           TOBN(0x53023b8b, 0x65bef640), TOBN(0xaabfec91, 0xd4d5f8cd)}},
+         {{TOBN(0xa40e1510, 0x079ea1bd), TOBN(0x1ad9addc, 0xd05d5d26),
+           TOBN(0xdb3f2eab, 0x13e68d4f), TOBN(0x1cff1ae2, 0x640f803f)},
+          {TOBN(0xe0e7b749, 0xd4cee117), TOBN(0x8e9f275b, 0x4036d909),
+           TOBN(0xce34e31d, 0x8f4d4c38), TOBN(0x22b37f69, 0xd75130fc)}},
+         {{TOBN(0x83e0f1fd, 0xb4014604), TOBN(0xa8ce9919, 0x89415078),
+           TOBN(0x82375b75, 0x41792efe), TOBN(0x4f59bf5c, 0x97d4515b)},
+          {TOBN(0xac4f324f, 0x923a277d), TOBN(0xd9bc9b7d, 0x650f3406),
+           TOBN(0xc6fa87d1, 0x8a39bc51), TOBN(0x82588530, 0x5ccc108f)}},
+         {{TOBN(0x5ced3c9f, 0x82e4c634), TOBN(0x8efb8314, 0x3a4464f8),
+           TOBN(0xe706381b, 0x7a1dca25), TOBN(0x6cd15a3c, 0x5a2a412b)},
+          {TOBN(0x9347a8fd, 0xbfcd8fb5), TOBN(0x31db2eef, 0x6e54cd22),
+           TOBN(0xc4aeb11e, 0xf8d8932f), TOBN(0x11e7c1ed, 0x344411af)}},
+         {{TOBN(0x2653050c, 0xdc9a151e), TOBN(0x9edbfc08, 0x3bb0a859),
+           TOBN(0x926c81c7, 0xfd5691e7), TOBN(0x9c1b2342, 0x6f39019a)},
+          {TOBN(0x64a81c8b, 0x7f8474b9), TOBN(0x90657c07, 0x01761819),
+           TOBN(0x390b3331, 0x55e0375a), TOBN(0xc676c626, 0xb6ebc47d)}},
+         {{TOBN(0x51623247, 0xb7d6dee8), TOBN(0x0948d927, 0x79659313),
+           TOBN(0x99700161, 0xe9ab35ed), TOBN(0x06cc32b4, 0x8ddde408)},
+          {TOBN(0x6f2fd664, 0x061ef338), TOBN(0x1606fa02, 0xc202e9ed),
+           TOBN(0x55388bc1, 0x929ba99b), TOBN(0xc4428c5e, 0x1e81df69)}},
+         {{TOBN(0xce2028ae, 0xf91b0b2a), TOBN(0xce870a23, 0xf03dfd3f),
+           TOBN(0x66ec2c87, 0x0affe8ed), TOBN(0xb205fb46, 0x284d0c00)},
+          {TOBN(0xbf5dffe7, 0x44cefa48), TOBN(0xb6fc37a8, 0xa19876d7),
+           TOBN(0xbecfa84c, 0x08b72863), TOBN(0xd7205ff5, 0x2576374f)}},
+         {{TOBN(0x80330d32, 0x8887de41), TOBN(0x5de0df0c, 0x869ea534),
+           TOBN(0x13f42753, 0x3c56ea17), TOBN(0xeb1f6069, 0x452b1a78)},
+          {TOBN(0x50474396, 0xe30ea15c), TOBN(0x575816a1, 0xc1494125),
+           TOBN(0xbe1ce55b, 0xfe6bb38f), TOBN(0xb901a948, 0x96ae30f7)}},
+         {{TOBN(0xe5af0f08, 0xd8fc3548), TOBN(0x5010b5d0, 0xd73bfd08),
+           TOBN(0x993d2880, 0x53fe655a), TOBN(0x99f2630b, 0x1c1309fd)},
+          {TOBN(0xd8677baf, 0xb4e3b76f), TOBN(0x14e51ddc, 0xb840784b),
+           TOBN(0x326c750c, 0xbf0092ce), TOBN(0xc83d306b, 0xf528320f)}},
+         {{TOBN(0xc4456715, 0x77d4715c), TOBN(0xd30019f9, 0x6b703235),
+           TOBN(0x207ccb2e, 0xd669e986), TOBN(0x57c824af, 0xf6dbfc28)},
+          {TOBN(0xf0eb532f, 0xd8f92a23), TOBN(0x4a557fd4, 0x9bb98fd2),
+           TOBN(0xa57acea7, 0xc1e6199a), TOBN(0x0c663820, 0x8b94b1ed)}},
+         {{TOBN(0x9b42be8f, 0xf83a9266), TOBN(0xc7741c97, 0x0101bd45),
+           TOBN(0x95770c11, 0x07bd9ceb), TOBN(0x1f50250a, 0x8b2e0744)},
+          {TOBN(0xf762eec8, 0x1477b654), TOBN(0xc65b900e, 0x15efe59a),
+           TOBN(0x88c96148, 0x9546a897), TOBN(0x7e8025b3, 0xc30b4d7c)}},
+         {{TOBN(0xae4065ef, 0x12045cf9), TOBN(0x6fcb2caf, 0x9ccce8bd),
+           TOBN(0x1fa0ba4e, 0xf2cf6525), TOBN(0xf683125d, 0xcb72c312)},
+          {TOBN(0xa01da4ea, 0xe312410e), TOBN(0x67e28677, 0x6cd8e830),
+           TOBN(0xabd95752, 0x98fb3f07), TOBN(0x05f11e11, 0xeef649a5)}},
+         {{TOBN(0xba47faef, 0x9d3472c2), TOBN(0x3adff697, 0xc77d1345),
+           TOBN(0x4761fa04, 0xdd15afee), TOBN(0x64f1f61a, 0xb9e69462)},
+          {TOBN(0xfa691fab, 0x9bfb9093), TOBN(0x3df8ae8f, 0xa1133dfe),
+           TOBN(0xcd5f8967, 0x58cc710d), TOBN(0xfbb88d50, 0x16c7fe79)}},
+         {{TOBN(0x8e011b4c, 0xe88c50d1), TOBN(0x7532e807, 0xa8771c4f),
+           TOBN(0x64c78a48, 0xe2278ee4), TOBN(0x0b283e83, 0x3845072a)},
+          {TOBN(0x98a6f291, 0x49e69274), TOBN(0xb96e9668, 0x1868b21c),
+           TOBN(0x38f0adc2, 0xb1a8908e), TOBN(0x90afcff7, 0x1feb829d)}},
+         {{TOBN(0x9915a383, 0x210b0856), TOBN(0xa5a80602, 0xdef04889),
+           TOBN(0x800e9af9, 0x7c64d509), TOBN(0x81382d0b, 0xb8996f6f)},
+          {TOBN(0x490eba53, 0x81927e27), TOBN(0x46c63b32, 0x4af50182),
+           TOBN(0x784c5fd9, 0xd3ad62ce), TOBN(0xe4fa1870, 0xf8ae8736)}},
+         {{TOBN(0x4ec9d0bc, 0xd7466b25), TOBN(0x84ddbe1a, 0xdb235c65),
+           TOBN(0x5e2645ee, 0x163c1688), TOBN(0x570bd00e, 0x00eba747)},
+          {TOBN(0xfa51b629, 0x128bfa0f), TOBN(0x92fce1bd, 0x6c1d3b68),
+           TOBN(0x3e7361dc, 0xb66778b1), TOBN(0x9c7d249d, 0x5561d2bb)}},
+         {{TOBN(0xa40b28bf, 0x0bbc6229), TOBN(0x1c83c05e, 0xdfd91497),
+           TOBN(0x5f9f5154, 0xf083df05), TOBN(0xbac38b3c, 0xeee66c9d)},
+          {TOBN(0xf71db7e3, 0xec0dfcfd), TOBN(0xf2ecda8e, 0x8b0a8416),
+           TOBN(0x52fddd86, 0x7812aa66), TOBN(0x2896ef10, 0x4e6f4272)}},
+         {{TOBN(0xff27186a, 0x0fe9a745), TOBN(0x08249fcd, 0x49ca70db),
+           TOBN(0x7425a2e6, 0x441cac49), TOBN(0xf4a0885a, 0xece5ff57)},
+          {TOBN(0x6e2cb731, 0x7d7ead58), TOBN(0xf96cf7d6, 0x1898d104),
+           TOBN(0xafe67c9d, 0x4f2c9a89), TOBN(0x89895a50, 0x1c7bf5bc)}},
+         {{TOBN(0xdc7cb8e5, 0x573cecfa), TOBN(0x66497eae, 0xd15f03e6),
+           TOBN(0x6bc0de69, 0x3f084420), TOBN(0x323b9b36, 0xacd532b0)},
+          {TOBN(0xcfed390a, 0x0115a3c1), TOBN(0x9414c40b, 0x2d65ca0e),
+           TOBN(0x641406bd, 0x2f530c78), TOBN(0x29369a44, 0x833438f2)}},
+         {{TOBN(0x996884f5, 0x903fa271), TOBN(0xe6da0fd2, 0xb9da921e),
+           TOBN(0xa6f2f269, 0x5db01e54), TOBN(0x1ee3e9bd, 0x6876214e)},
+          {TOBN(0xa26e181c, 0xe27a9497), TOBN(0x36d254e4, 0x8e215e04),
+           TOBN(0x42f32a6c, 0x252cabca), TOBN(0x99481487, 0x80b57614)}},
+         {{TOBN(0x4c4dfe69, 0x40d9cae1), TOBN(0x05869580, 0x11a10f09),
+           TOBN(0xca287b57, 0x3491b64b), TOBN(0x77862d5d, 0x3fd4a53b)},
+          {TOBN(0xbf94856e, 0x50349126), TOBN(0x2be30bd1, 0x71c5268f),
+           TOBN(0x10393f19, 0xcbb650a6), TOBN(0x639531fe, 0x778cf9fd)}},
+         {{TOBN(0x02556a11, 0xb2935359), TOBN(0xda38aa96, 0xaf8c126e),
+           TOBN(0x47dbe6c2, 0x0960167f), TOBN(0x37bbabb6, 0x501901cd)},
+          {TOBN(0xb6e979e0, 0x2c947778), TOBN(0xd69a5175, 0x7a1a1dc6),
+           TOBN(0xc3ed5095, 0x9d9faf0c), TOBN(0x4dd9c096, 0x1d5fa5f0)}},
+         {{TOBN(0xa0c4304d, 0x64f16ea8), TOBN(0x8b1cac16, 0x7e718623),
+           TOBN(0x0b576546, 0x7c67f03e), TOBN(0x559cf5ad, 0xcbd88c01)},
+          {TOBN(0x074877bb, 0x0e2af19a), TOBN(0x1f717ec1, 0xa1228c92),
+           TOBN(0x70bcb800, 0x326e8920), TOBN(0xec6e2c5c, 0x4f312804)}},
+         {{TOBN(0x426aea7d, 0x3fca4752), TOBN(0xf12c0949, 0x2211f62a),
+           TOBN(0x24beecd8, 0x7be7b6b5), TOBN(0xb77eaf4c, 0x36d7a27d)},
+          {TOBN(0x154c2781, 0xfda78fd3), TOBN(0x848a83b0, 0x264eeabe),
+           TOBN(0x81287ef0, 0x4ffe2bc4), TOBN(0x7b6d88c6, 0xb6b6fc2a)}},
+         {{TOBN(0x805fb947, 0xce417d99), TOBN(0x4b93dcc3, 0x8b916cc4),
+           TOBN(0x72e65bb3, 0x21273323), TOBN(0xbcc1badd, 0x6ea9886e)},
+          {TOBN(0x0e223011, 0x4bc5ee85), TOBN(0xa561be74, 0xc18ee1e4),
+           TOBN(0x762fd2d4, 0xa6bcf1f1), TOBN(0x50e6a5a4, 0x95231489)}},
+         {{TOBN(0xca96001f, 0xa00b500b), TOBN(0x5c098cfc, 0x5d7dcdf5),
+           TOBN(0xa64e2d2e, 0x8c446a85), TOBN(0xbae9bcf1, 0x971f3c62)},
+          {TOBN(0x4ec22683, 0x8435a2c5), TOBN(0x8ceaed6c, 0x4bad4643),
+           TOBN(0xe9f8fb47, 0xccccf4e3), TOBN(0xbd4f3fa4, 0x1ce3b21e)}},
+         {{TOBN(0xd79fb110, 0xa3db3292), TOBN(0xe28a37da, 0xb536c66a),
+           TOBN(0x279ce87b, 0x8e49e6a9), TOBN(0x70ccfe8d, 0xfdcec8e3)},
+          {TOBN(0x2193e4e0, 0x3ba464b2), TOBN(0x0f39d60e, 0xaca9a398),
+           TOBN(0x7d7932af, 0xf82c12ab), TOBN(0xd8ff50ed, 0x91e7e0f7)}},
+         {{TOBN(0xea961058, 0xfa28a7e0), TOBN(0xc726cf25, 0x0bf5ec74),
+           TOBN(0xe74d55c8, 0xdb229666), TOBN(0x0bd9abbf, 0xa57f5799)},
+          {TOBN(0x7479ef07, 0x4dfc47b3), TOBN(0xd9c65fc3, 0x0c52f91d),
+           TOBN(0x8e0283fe, 0x36a8bde2), TOBN(0xa32a8b5e, 0x7d4b7280)}},
+         {{TOBN(0x6a677c61, 0x12e83233), TOBN(0x0fbb3512, 0xdcc9bf28),
+           TOBN(0x562e8ea5, 0x0d780f61), TOBN(0x0db8b22b, 0x1dc4e89c)},
+          {TOBN(0x0a6fd1fb, 0x89be0144), TOBN(0x8c77d246, 0xca57113b),
+           TOBN(0x4639075d, 0xff09c91c), TOBN(0x5b47b17f, 0x5060824c)}},
+         {{TOBN(0x58aea2b0, 0x16287b52), TOBN(0xa1343520, 0xd0cd8eb0),
+           TOBN(0x6148b4d0, 0xc5d58573), TOBN(0xdd2b6170, 0x291c68ae)},
+          {TOBN(0xa61b3929, 0x1da3b3b7), TOBN(0x5f946d79, 0x08c4ac10),
+           TOBN(0x4105d4a5, 0x7217d583), TOBN(0x5061da3d, 0x25e6de5e)}},
+         {{TOBN(0x3113940d, 0xec1b4991), TOBN(0xf12195e1, 0x36f485ae),
+           TOBN(0xa7507fb2, 0x731a2ee0), TOBN(0x95057a8e, 0x6e9e196e)},
+          {TOBN(0xa3c2c911, 0x2e130136), TOBN(0x97dfbb36, 0x33c60d15),
+           TOBN(0xcaf3c581, 0xb300ee2b), TOBN(0x77f25d90, 0xf4bac8b8)}},
+         {{TOBN(0xdb1c4f98, 0x6d840cd6), TOBN(0x471d62c0, 0xe634288c),
+           TOBN(0x8ec2f85e, 0xcec8a161), TOBN(0x41f37cbc, 0xfa6f4ae2)},
+          {TOBN(0x6793a20f, 0x4b709985), TOBN(0x7a7bd33b, 0xefa8985b),
+           TOBN(0x2c6a3fbd, 0x938e6446), TOBN(0x19042619, 0x2a8d47c1)}},
+         {{TOBN(0x16848667, 0xcc36975f), TOBN(0x02acf168, 0x9d5f1dfb),
+           TOBN(0x62d41ad4, 0x613baa94), TOBN(0xb56fbb92, 0x9f684670)},
+          {TOBN(0xce610d0d, 0xe9e40569), TOBN(0x7b99c65f, 0x35489fef),
+           TOBN(0x0c88ad1b, 0x3df18b97), TOBN(0x81b7d9be, 0x5d0e9edb)}},
+         {{TOBN(0xd85218c0, 0xc716cc0a), TOBN(0xf4b5ff90, 0x85691c49),
+           TOBN(0xa4fd666b, 0xce356ac6), TOBN(0x17c72895, 0x4b327a7a)},
+          {TOBN(0xf93d5085, 0xda6be7de), TOBN(0xff71530e, 0x3301d34e),
+           TOBN(0x4cd96442, 0xd8f448e8), TOBN(0x9283d331, 0x2ed18ffa)}},
+         {{TOBN(0x4d33dd99, 0x2a849870), TOBN(0xa716964b, 0x41576335),
+           TOBN(0xff5e3a9b, 0x179be0e5), TOBN(0x5b9d6b1b, 0x83b13632)},
+          {TOBN(0x3b8bd7d4, 0xa52f313b), TOBN(0xc9dd95a0, 0x637a4660),
+           TOBN(0x30035962, 0x0b3e218f), TOBN(0xce1481a3, 0xc7b28a3c)}},
+         {{TOBN(0xab41b43a, 0x43228d83), TOBN(0x24ae1c30, 0x4ad63f99),
+           TOBN(0x8e525f1a, 0x46a51229), TOBN(0x14af860f, 0xcd26d2b4)},
+          {TOBN(0xd6baef61, 0x3f714aa1), TOBN(0xf51865ad, 0xeb78795e),
+           TOBN(0xd3e21fce, 0xe6a9d694), TOBN(0x82ceb1dd, 0x8a37b527)}}}};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c
new file mode 100644
index 0000000..977b08c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c	
@@ -0,0 +1,651 @@
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2014, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ *
+ * Reference:
+ * S.Gueron and V.Krasnov, "Fast Prime Field Elliptic Curve Cryptography with
+ *                          256 Bit Primes"
+ */
+
+#include <openssl_grpc/ec.h>
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/crypto.h>
+#include <openssl_grpc/err.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+#include "internal.h"
+#include "p256-x86_64.h"
+
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+
+typedef P256_POINT_AFFINE PRECOMP256_ROW[64];
+
+// One converted into the Montgomery domain
+static const BN_ULONG ONE[P256_LIMBS] = {
+    TOBN(0x00000000, 0x00000001), TOBN(0xffffffff, 0x00000000),
+    TOBN(0xffffffff, 0xffffffff), TOBN(0x00000000, 0xfffffffe),
+};
+
+// Precomputed tables for the default generator
+#include "p256-x86_64-table.h"
+
+// Recode window to a signed digit, see |ec_GFp_nistp_recode_scalar_bits| in
+// util.c for details
+static unsigned booth_recode_w5(unsigned in) {
+  unsigned s, d;
+
+  s = ~((in >> 5) - 1);
+  d = (1 << 6) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  return (d << 1) + (s & 1);
+}
+
+static unsigned booth_recode_w7(unsigned in) {
+  unsigned s, d;
+
+  s = ~((in >> 7) - 1);
+  d = (1 << 8) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  return (d << 1) + (s & 1);
+}
+
+// copy_conditional copies |src| to |dst| if |move| is one and leaves it as-is
+// if |move| is zero.
+//
+// WARNING: this breaks the usual convention of constant-time functions
+// returning masks.
+static void copy_conditional(BN_ULONG dst[P256_LIMBS],
+                             const BN_ULONG src[P256_LIMBS], BN_ULONG move) {
+  BN_ULONG mask1 = ((BN_ULONG)0) - move;
+  BN_ULONG mask2 = ~mask1;
+
+  dst[0] = (src[0] & mask1) ^ (dst[0] & mask2);
+  dst[1] = (src[1] & mask1) ^ (dst[1] & mask2);
+  dst[2] = (src[2] & mask1) ^ (dst[2] & mask2);
+  dst[3] = (src[3] & mask1) ^ (dst[3] & mask2);
+  if (P256_LIMBS == 8) {
+    dst[4] = (src[4] & mask1) ^ (dst[4] & mask2);
+    dst[5] = (src[5] & mask1) ^ (dst[5] & mask2);
+    dst[6] = (src[6] & mask1) ^ (dst[6] & mask2);
+    dst[7] = (src[7] & mask1) ^ (dst[7] & mask2);
+  }
+}
+
+// is_not_zero returns one iff in != 0 and zero otherwise.
+//
+// WARNING: this breaks the usual convention of constant-time functions
+// returning masks.
+//
+// (define-fun is_not_zero ((in (_ BitVec 64))) (_ BitVec 64)
+//   (bvlshr (bvor in (bvsub #x0000000000000000 in)) #x000000000000003f)
+// )
+//
+// (declare-fun x () (_ BitVec 64))
+//
+// (assert (and (= x #x0000000000000000) (= (is_not_zero x) #x0000000000000001)))
+// (check-sat)
+//
+// (assert (and (not (= x #x0000000000000000)) (= (is_not_zero x) #x0000000000000000)))
+// (check-sat)
+//
+static BN_ULONG is_not_zero(BN_ULONG in) {
+  in |= (0 - in);
+  in >>= BN_BITS2 - 1;
+  return in;
+}
+
+// ecp_nistz256_mod_inverse_mont sets |r| to (|in| * 2^-256)^-1 * 2^256 mod p.
+// That is, |r| is the modular inverse of |in| for input and output in the
+// Montgomery domain.
+static void ecp_nistz256_mod_inverse_mont(BN_ULONG r[P256_LIMBS],
+                                          const BN_ULONG in[P256_LIMBS]) {
+  /* The poly is ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff
+     ffffffff
+     We use FLT and used poly-2 as exponent */
+  BN_ULONG p2[P256_LIMBS];
+  BN_ULONG p4[P256_LIMBS];
+  BN_ULONG p8[P256_LIMBS];
+  BN_ULONG p16[P256_LIMBS];
+  BN_ULONG p32[P256_LIMBS];
+  BN_ULONG res[P256_LIMBS];
+  int i;
+
+  ecp_nistz256_sqr_mont(res, in);
+  ecp_nistz256_mul_mont(p2, res, in);  // 3*p
+
+  ecp_nistz256_sqr_mont(res, p2);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(p4, res, p2);  // f*p
+
+  ecp_nistz256_sqr_mont(res, p4);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(p8, res, p4);  // ff*p
+
+  ecp_nistz256_sqr_mont(res, p8);
+  for (i = 0; i < 7; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(p16, res, p8);  // ffff*p
+
+  ecp_nistz256_sqr_mont(res, p16);
+  for (i = 0; i < 15; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(p32, res, p16);  // ffffffff*p
+
+  ecp_nistz256_sqr_mont(res, p32);
+  for (i = 0; i < 31; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, in);
+
+  for (i = 0; i < 32 * 4; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p32);
+
+  for (i = 0; i < 32; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p32);
+
+  for (i = 0; i < 16; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p16);
+
+  for (i = 0; i < 8; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p8);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(res, res, p4);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(res, res, p2);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(r, res, in);
+}
+
+// r = p * p_scalar
+static void ecp_nistz256_windowed_mul(const EC_GROUP *group, P256_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *p_scalar) {
+  assert(p != NULL);
+  assert(p_scalar != NULL);
+  assert(group->field.width == P256_LIMBS);
+
+  static const unsigned kWindowSize = 5;
+  static const unsigned kMask = (1 << (5 /* kWindowSize */ + 1)) - 1;
+
+  // A |P256_POINT| is (3 * 32) = 96 bytes, and the 64-byte alignment should
+  // add no more than 63 bytes of overhead. Thus, |table| should require
+  // ~1599 ((96 * 16) + 63) bytes of stack space.
+  alignas(64) P256_POINT table[16];
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, p_scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // table[0] is implicitly (0,0,0) (the point at infinity), therefore it is
+  // not stored. All other values are actually stored with an offset of -1 in
+  // table.
+  P256_POINT *row = table;
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(row[1 - 1].X, p->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(row[1 - 1].Y, p->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(row[1 - 1].Z, p->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+
+  ecp_nistz256_point_double(&row[2 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[3 - 1], &row[2 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[4 - 1], &row[2 - 1]);
+  ecp_nistz256_point_double(&row[6 - 1], &row[3 - 1]);
+  ecp_nistz256_point_double(&row[8 - 1], &row[4 - 1]);
+  ecp_nistz256_point_double(&row[12 - 1], &row[6 - 1]);
+  ecp_nistz256_point_add(&row[5 - 1], &row[4 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[7 - 1], &row[6 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[9 - 1], &row[8 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[13 - 1], &row[12 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[14 - 1], &row[7 - 1]);
+  ecp_nistz256_point_double(&row[10 - 1], &row[5 - 1]);
+  ecp_nistz256_point_add(&row[15 - 1], &row[14 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[11 - 1], &row[10 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[16 - 1], &row[8 - 1]);
+
+  BN_ULONG tmp[P256_LIMBS];
+  alignas(32) P256_POINT h;
+  unsigned index = 255;
+  unsigned wvalue = p_str[(index - 1) / 8];
+  wvalue = (wvalue >> ((index - 1) % 8)) & kMask;
+
+  ecp_nistz256_select_w5(r, table, booth_recode_w5(wvalue) >> 1);
+
+  while (index >= 5) {
+    if (index != 255) {
+      unsigned off = (index - 1) / 8;
+
+      wvalue = p_str[off] | p_str[off + 1] << 8;
+      wvalue = (wvalue >> ((index - 1) % 8)) & kMask;
+
+      wvalue = booth_recode_w5(wvalue);
+
+      ecp_nistz256_select_w5(&h, table, wvalue >> 1);
+
+      ecp_nistz256_neg(tmp, h.Y);
+      copy_conditional(h.Y, tmp, (wvalue & 1));
+
+      ecp_nistz256_point_add(r, r, &h);
+    }
+
+    index -= kWindowSize;
+
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+  }
+
+  // Final window
+  wvalue = p_str[0];
+  wvalue = (wvalue << 1) & kMask;
+
+  wvalue = booth_recode_w5(wvalue);
+
+  ecp_nistz256_select_w5(&h, table, wvalue >> 1);
+
+  ecp_nistz256_neg(tmp, h.Y);
+  copy_conditional(h.Y, tmp, wvalue & 1);
+
+  ecp_nistz256_point_add(r, r, &h);
+}
+
+typedef union {
+  P256_POINT p;
+  P256_POINT_AFFINE a;
+} p256_point_union_t;
+
+static unsigned calc_first_wvalue(unsigned *index, const uint8_t p_str[33]) {
+  static const unsigned kWindowSize = 7;
+  static const unsigned kMask = (1 << (7 /* kWindowSize */ + 1)) - 1;
+  *index = kWindowSize;
+
+  unsigned wvalue = (p_str[0] << 1) & kMask;
+  return booth_recode_w7(wvalue);
+}
+
+static unsigned calc_wvalue(unsigned *index, const uint8_t p_str[33]) {
+  static const unsigned kWindowSize = 7;
+  static const unsigned kMask = (1 << (7 /* kWindowSize */ + 1)) - 1;
+
+  const unsigned off = (*index - 1) / 8;
+  unsigned wvalue = p_str[off] | p_str[off + 1] << 8;
+  wvalue = (wvalue >> ((*index - 1) % 8)) & kMask;
+  *index += kWindowSize;
+
+  return booth_recode_w7(wvalue);
+}
+
+static void ecp_nistz256_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                   const EC_RAW_POINT *p,
+                                   const EC_SCALAR *scalar) {
+  alignas(32) P256_POINT out;
+  ecp_nistz256_windowed_mul(group, &out, p, scalar);
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, out.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, out.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, out.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_point_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                                        const EC_SCALAR *scalar) {
+  alignas(32) p256_point_union_t t, p;
+
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // First window
+  unsigned index = 0;
+  unsigned wvalue = calc_first_wvalue(&index, p_str);
+
+  ecp_nistz256_select_w7(&p.a, ecp_nistz256_precomputed[0], wvalue >> 1);
+  ecp_nistz256_neg(p.p.Z, p.p.Y);
+  copy_conditional(p.p.Y, p.p.Z, wvalue & 1);
+
+  // Convert |p| from affine to Jacobian coordinates. We set Z to zero if |p|
+  // is infinity and |ONE| otherwise. |p| was computed from the table, so it
+  // is infinity iff |wvalue >> 1| is zero.
+  OPENSSL_memset(p.p.Z, 0, sizeof(p.p.Z));
+  copy_conditional(p.p.Z, ONE, is_not_zero(wvalue >> 1));
+
+  for (int i = 1; i < 37; i++) {
+    wvalue = calc_wvalue(&index, p_str);
+
+    ecp_nistz256_select_w7(&t.a, ecp_nistz256_precomputed[i], wvalue >> 1);
+
+    ecp_nistz256_neg(t.p.Z, t.a.Y);
+    copy_conditional(t.a.Y, t.p.Z, wvalue & 1);
+
+    // Note |ecp_nistz256_point_add_affine| does not work if |p.p| and |t.a|
+    // are the same non-infinity point.
+    ecp_nistz256_point_add_affine(&p.p, &p.p, &t.a);
+  }
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, p.p.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, p.p.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, p.p.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_points_mul_public(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *g_scalar,
+                                           const EC_RAW_POINT *p_,
+                                           const EC_SCALAR *p_scalar) {
+  assert(p_ != NULL && p_scalar != NULL && g_scalar != NULL);
+
+  alignas(32) p256_point_union_t t, p;
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, g_scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // First window
+  unsigned index = 0;
+  unsigned wvalue = calc_first_wvalue(&index, p_str);
+
+  // Convert |p| from affine to Jacobian coordinates. We set Z to zero if |p|
+  // is infinity and |ONE| otherwise. |p| was computed from the table, so it
+  // is infinity iff |wvalue >> 1| is zero.
+  if ((wvalue >> 1) != 0) {
+    OPENSSL_memcpy(&p.a, &ecp_nistz256_precomputed[0][(wvalue >> 1) - 1],
+                   sizeof(p.a));
+    OPENSSL_memcpy(&p.p.Z, ONE, sizeof(p.p.Z));
+  } else {
+    OPENSSL_memset(&p.a, 0, sizeof(p.a));
+    OPENSSL_memset(p.p.Z, 0, sizeof(p.p.Z));
+  }
+
+  if ((wvalue & 1) == 1) {
+    ecp_nistz256_neg(p.p.Y, p.p.Y);
+  }
+
+  for (int i = 1; i < 37; i++) {
+    wvalue = calc_wvalue(&index, p_str);
+
+    if ((wvalue >> 1) == 0) {
+      continue;
+    }
+
+    OPENSSL_memcpy(&t.a, &ecp_nistz256_precomputed[i][(wvalue >> 1) - 1],
+                   sizeof(p.a));
+
+    if ((wvalue & 1) == 1) {
+      ecp_nistz256_neg(t.a.Y, t.a.Y);
+    }
+
+    // Note |ecp_nistz256_point_add_affine| does not work if |p.p| and |t.a|
+    // are the same non-infinity point, so it is important that we compute the
+    // |g_scalar| term before the |p_scalar| term.
+    ecp_nistz256_point_add_affine(&p.p, &p.p, &t.a);
+  }
+
+  ecp_nistz256_windowed_mul(group, &t.p, p_, p_scalar);
+  ecp_nistz256_point_add(&p.p, &p.p, &t.p);
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, p.p.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, p.p.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, p.p.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static int ecp_nistz256_get_affine(const EC_GROUP *group,
+                                   const EC_RAW_POINT *point, EC_FELEM *x,
+                                   EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  BN_ULONG z_inv2[P256_LIMBS];
+  BN_ULONG z_inv3[P256_LIMBS];
+  assert(group->field.width == P256_LIMBS);
+  ecp_nistz256_mod_inverse_mont(z_inv3, point->Z.words);
+  ecp_nistz256_sqr_mont(z_inv2, z_inv3);
+
+  // Instead of using |ecp_nistz256_from_mont| to convert the |x| coordinate
+  // and then calling |ecp_nistz256_from_mont| again to convert the |y|
+  // coordinate below, convert the common factor |z_inv2| once now, saving one
+  // reduction.
+  ecp_nistz256_from_mont(z_inv2, z_inv2);
+
+  if (x != NULL) {
+    ecp_nistz256_mul_mont(x->words, z_inv2, point->X.words);
+  }
+
+  if (y != NULL) {
+    ecp_nistz256_mul_mont(z_inv3, z_inv3, z_inv2);
+    ecp_nistz256_mul_mont(y->words, z_inv3, point->Y.words);
+  }
+
+  return 1;
+}
+
+static void ecp_nistz256_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_RAW_POINT *a_, const EC_RAW_POINT *b_) {
+  P256_POINT a, b;
+  OPENSSL_memcpy(a.X, a_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Y, a_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Z, a_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.X, b_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.Y, b_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.Z, b_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  ecp_nistz256_point_add(&a, &a, &b);
+  OPENSSL_memcpy(r->X.words, a.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, a.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, a.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_RAW_POINT *a_) {
+  P256_POINT a;
+  OPENSSL_memcpy(a.X, a_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Y, a_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Z, a_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  ecp_nistz256_point_double(&a, &a);
+  OPENSSL_memcpy(r->X.words, a.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, a.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, a.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_inv_mod_ord(const EC_GROUP *group, EC_SCALAR *out,
+                                     const EC_SCALAR *in) {
+  // table[i] stores a power of |in| corresponding to the matching enum value.
+  enum {
+    // The following indices specify the power in binary.
+    i_1 = 0,
+    i_10,
+    i_11,
+    i_101,
+    i_111,
+    i_1010,
+    i_1111,
+    i_10101,
+    i_101010,
+    i_101111,
+    // The following indices specify 2^N-1, or N ones in a row.
+    i_x6,
+    i_x8,
+    i_x16,
+    i_x32
+  };
+  BN_ULONG table[15][P256_LIMBS];
+
+  // https://briansmith.org/ecc-inversion-addition-chains-01#p256_scalar_inversion
+  //
+  // Even though this code path spares 12 squarings, 4.5%, and 13
+  // multiplications, 25%, the overall sign operation is not that much faster,
+  // not more that 2%. Most of the performance of this function comes from the
+  // scalar operations.
+
+  // Pre-calculate powers.
+  OPENSSL_memcpy(table[i_1], in->words, P256_LIMBS * sizeof(BN_ULONG));
+
+  ecp_nistz256_ord_sqr_mont(table[i_10], table[i_1], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_11], table[i_1], table[i_10]);
+
+  ecp_nistz256_ord_mul_mont(table[i_101], table[i_11], table[i_10]);
+
+  ecp_nistz256_ord_mul_mont(table[i_111], table[i_101], table[i_10]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_1010], table[i_101], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_1111], table[i_1010], table[i_101]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_10101], table[i_1010], 1);
+  ecp_nistz256_ord_mul_mont(table[i_10101], table[i_10101], table[i_1]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_101010], table[i_10101], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_101111], table[i_101010], table[i_101]);
+
+  ecp_nistz256_ord_mul_mont(table[i_x6], table[i_101010], table[i_10101]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x8], table[i_x6], 2);
+  ecp_nistz256_ord_mul_mont(table[i_x8], table[i_x8], table[i_11]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x16], table[i_x8], 8);
+  ecp_nistz256_ord_mul_mont(table[i_x16], table[i_x16], table[i_x8]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x32], table[i_x16], 16);
+  ecp_nistz256_ord_mul_mont(table[i_x32], table[i_x32], table[i_x16]);
+
+  // Compute |in| raised to the order-2.
+  ecp_nistz256_ord_sqr_mont(out->words, table[i_x32], 64);
+  ecp_nistz256_ord_mul_mont(out->words, out->words, table[i_x32]);
+  static const struct {
+    uint8_t p, i;
+  } kChain[27] = {{32, i_x32},    {6, i_101111}, {5, i_111},    {4, i_11},
+                  {5, i_1111},    {5, i_10101},  {4, i_101},    {3, i_101},
+                  {3, i_101},     {5, i_111},    {9, i_101111}, {6, i_1111},
+                  {2, i_1},       {5, i_1},      {6, i_1111},   {5, i_111},
+                  {4, i_111},     {5, i_111},    {5, i_101},    {3, i_11},
+                  {10, i_101111}, {2, i_11},     {5, i_11},     {5, i_11},
+                  {3, i_1},       {7, i_10101},  {6, i_1111}};
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kChain); i++) {
+    ecp_nistz256_ord_sqr_mont(out->words, out->words, kChain[i].p);
+    ecp_nistz256_ord_mul_mont(out->words, out->words, table[kChain[i].i]);
+  }
+}
+
+static int ecp_nistz256_mont_inv_mod_ord_vartime(const EC_GROUP *group,
+                                                 EC_SCALAR *out,
+                                                 const EC_SCALAR *in) {
+  if ((OPENSSL_ia32cap_get()[1] & (1 << 28)) == 0) {
+    // No AVX support; fallback to generic code.
+    return ec_GFp_simple_mont_inv_mod_ord_vartime(group, out, in);
+  }
+
+  assert(group->order.width == P256_LIMBS);
+  if (!beeu_mod_inverse_vartime(out->words, in->words, group->order.d)) {
+    return 0;
+  }
+
+  // The result should be returned in the Montgomery domain.
+  ec_scalar_to_montgomery(group, out, out);
+  return 1;
+}
+
+static int ecp_nistz256_cmp_x_coordinate(const EC_GROUP *group,
+                                         const EC_RAW_POINT *p,
+                                         const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  assert(group->order.width == P256_LIMBS);
+  assert(group->field.width == P256_LIMBS);
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  BN_ULONG r_Z2[P256_LIMBS], Z2_mont[P256_LIMBS], X[P256_LIMBS];
+  ecp_nistz256_mul_mont(Z2_mont, p->Z.words, p->Z.words);
+  ecp_nistz256_mul_mont(r_Z2, r->words, Z2_mont);
+  ecp_nistz256_from_mont(X, p->X.words);
+
+  if (OPENSSL_memcmp(r_Z2, X, sizeof(r_Z2)) == 0) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         P256_LIMBS)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    bn_add_words(r_Z2, r->words, group->order.d, P256_LIMBS);
+    ecp_nistz256_mul_mont(r_Z2, r_Z2, Z2_mont);
+    if (OPENSSL_memcmp(r_Z2, X, sizeof(r_Z2)) == 0) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistz256_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates = ecp_nistz256_get_affine;
+  out->add = ecp_nistz256_add;
+  out->dbl = ecp_nistz256_dbl;
+  out->mul = ecp_nistz256_point_mul;
+  out->mul_base = ecp_nistz256_point_mul_base;
+  out->mul_public = ecp_nistz256_points_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ecp_nistz256_inv_mod_ord;
+  out->scalar_inv_montgomery_vartime = ecp_nistz256_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ecp_nistz256_cmp_x_coordinate;
+}
+
+#endif /* !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+          !defined(OPENSSL_SMALL) */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c.grpc_back
new file mode 100644
index 0000000..b4af544
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.c.grpc_back	
@@ -0,0 +1,651 @@
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2014, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ *
+ * Reference:
+ * S.Gueron and V.Krasnov, "Fast Prime Field Elliptic Curve Cryptography with
+ *                          256 Bit Primes"
+ */
+
+#include <openssl/ec.h>
+
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/cpu.h>
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+#include "internal.h"
+#include "p256-x86_64.h"
+
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+
+typedef P256_POINT_AFFINE PRECOMP256_ROW[64];
+
+// One converted into the Montgomery domain
+static const BN_ULONG ONE[P256_LIMBS] = {
+    TOBN(0x00000000, 0x00000001), TOBN(0xffffffff, 0x00000000),
+    TOBN(0xffffffff, 0xffffffff), TOBN(0x00000000, 0xfffffffe),
+};
+
+// Precomputed tables for the default generator
+#include "p256-x86_64-table.h"
+
+// Recode window to a signed digit, see |ec_GFp_nistp_recode_scalar_bits| in
+// util.c for details
+static unsigned booth_recode_w5(unsigned in) {
+  unsigned s, d;
+
+  s = ~((in >> 5) - 1);
+  d = (1 << 6) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  return (d << 1) + (s & 1);
+}
+
+static unsigned booth_recode_w7(unsigned in) {
+  unsigned s, d;
+
+  s = ~((in >> 7) - 1);
+  d = (1 << 8) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  return (d << 1) + (s & 1);
+}
+
+// copy_conditional copies |src| to |dst| if |move| is one and leaves it as-is
+// if |move| is zero.
+//
+// WARNING: this breaks the usual convention of constant-time functions
+// returning masks.
+static void copy_conditional(BN_ULONG dst[P256_LIMBS],
+                             const BN_ULONG src[P256_LIMBS], BN_ULONG move) {
+  BN_ULONG mask1 = ((BN_ULONG)0) - move;
+  BN_ULONG mask2 = ~mask1;
+
+  dst[0] = (src[0] & mask1) ^ (dst[0] & mask2);
+  dst[1] = (src[1] & mask1) ^ (dst[1] & mask2);
+  dst[2] = (src[2] & mask1) ^ (dst[2] & mask2);
+  dst[3] = (src[3] & mask1) ^ (dst[3] & mask2);
+  if (P256_LIMBS == 8) {
+    dst[4] = (src[4] & mask1) ^ (dst[4] & mask2);
+    dst[5] = (src[5] & mask1) ^ (dst[5] & mask2);
+    dst[6] = (src[6] & mask1) ^ (dst[6] & mask2);
+    dst[7] = (src[7] & mask1) ^ (dst[7] & mask2);
+  }
+}
+
+// is_not_zero returns one iff in != 0 and zero otherwise.
+//
+// WARNING: this breaks the usual convention of constant-time functions
+// returning masks.
+//
+// (define-fun is_not_zero ((in (_ BitVec 64))) (_ BitVec 64)
+//   (bvlshr (bvor in (bvsub #x0000000000000000 in)) #x000000000000003f)
+// )
+//
+// (declare-fun x () (_ BitVec 64))
+//
+// (assert (and (= x #x0000000000000000) (= (is_not_zero x) #x0000000000000001)))
+// (check-sat)
+//
+// (assert (and (not (= x #x0000000000000000)) (= (is_not_zero x) #x0000000000000000)))
+// (check-sat)
+//
+static BN_ULONG is_not_zero(BN_ULONG in) {
+  in |= (0 - in);
+  in >>= BN_BITS2 - 1;
+  return in;
+}
+
+// ecp_nistz256_mod_inverse_mont sets |r| to (|in| * 2^-256)^-1 * 2^256 mod p.
+// That is, |r| is the modular inverse of |in| for input and output in the
+// Montgomery domain.
+static void ecp_nistz256_mod_inverse_mont(BN_ULONG r[P256_LIMBS],
+                                          const BN_ULONG in[P256_LIMBS]) {
+  /* The poly is ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff
+     ffffffff
+     We use FLT and used poly-2 as exponent */
+  BN_ULONG p2[P256_LIMBS];
+  BN_ULONG p4[P256_LIMBS];
+  BN_ULONG p8[P256_LIMBS];
+  BN_ULONG p16[P256_LIMBS];
+  BN_ULONG p32[P256_LIMBS];
+  BN_ULONG res[P256_LIMBS];
+  int i;
+
+  ecp_nistz256_sqr_mont(res, in);
+  ecp_nistz256_mul_mont(p2, res, in);  // 3*p
+
+  ecp_nistz256_sqr_mont(res, p2);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(p4, res, p2);  // f*p
+
+  ecp_nistz256_sqr_mont(res, p4);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(p8, res, p4);  // ff*p
+
+  ecp_nistz256_sqr_mont(res, p8);
+  for (i = 0; i < 7; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(p16, res, p8);  // ffff*p
+
+  ecp_nistz256_sqr_mont(res, p16);
+  for (i = 0; i < 15; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(p32, res, p16);  // ffffffff*p
+
+  ecp_nistz256_sqr_mont(res, p32);
+  for (i = 0; i < 31; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, in);
+
+  for (i = 0; i < 32 * 4; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p32);
+
+  for (i = 0; i < 32; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p32);
+
+  for (i = 0; i < 16; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p16);
+
+  for (i = 0; i < 8; i++) {
+    ecp_nistz256_sqr_mont(res, res);
+  }
+  ecp_nistz256_mul_mont(res, res, p8);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(res, res, p4);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(res, res, p2);
+
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_sqr_mont(res, res);
+  ecp_nistz256_mul_mont(r, res, in);
+}
+
+// r = p * p_scalar
+static void ecp_nistz256_windowed_mul(const EC_GROUP *group, P256_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *p_scalar) {
+  assert(p != NULL);
+  assert(p_scalar != NULL);
+  assert(group->field.width == P256_LIMBS);
+
+  static const unsigned kWindowSize = 5;
+  static const unsigned kMask = (1 << (5 /* kWindowSize */ + 1)) - 1;
+
+  // A |P256_POINT| is (3 * 32) = 96 bytes, and the 64-byte alignment should
+  // add no more than 63 bytes of overhead. Thus, |table| should require
+  // ~1599 ((96 * 16) + 63) bytes of stack space.
+  alignas(64) P256_POINT table[16];
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, p_scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // table[0] is implicitly (0,0,0) (the point at infinity), therefore it is
+  // not stored. All other values are actually stored with an offset of -1 in
+  // table.
+  P256_POINT *row = table;
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(row[1 - 1].X, p->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(row[1 - 1].Y, p->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(row[1 - 1].Z, p->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+
+  ecp_nistz256_point_double(&row[2 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[3 - 1], &row[2 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[4 - 1], &row[2 - 1]);
+  ecp_nistz256_point_double(&row[6 - 1], &row[3 - 1]);
+  ecp_nistz256_point_double(&row[8 - 1], &row[4 - 1]);
+  ecp_nistz256_point_double(&row[12 - 1], &row[6 - 1]);
+  ecp_nistz256_point_add(&row[5 - 1], &row[4 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[7 - 1], &row[6 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[9 - 1], &row[8 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[13 - 1], &row[12 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[14 - 1], &row[7 - 1]);
+  ecp_nistz256_point_double(&row[10 - 1], &row[5 - 1]);
+  ecp_nistz256_point_add(&row[15 - 1], &row[14 - 1], &row[1 - 1]);
+  ecp_nistz256_point_add(&row[11 - 1], &row[10 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[16 - 1], &row[8 - 1]);
+
+  BN_ULONG tmp[P256_LIMBS];
+  alignas(32) P256_POINT h;
+  unsigned index = 255;
+  unsigned wvalue = p_str[(index - 1) / 8];
+  wvalue = (wvalue >> ((index - 1) % 8)) & kMask;
+
+  ecp_nistz256_select_w5(r, table, booth_recode_w5(wvalue) >> 1);
+
+  while (index >= 5) {
+    if (index != 255) {
+      unsigned off = (index - 1) / 8;
+
+      wvalue = p_str[off] | p_str[off + 1] << 8;
+      wvalue = (wvalue >> ((index - 1) % 8)) & kMask;
+
+      wvalue = booth_recode_w5(wvalue);
+
+      ecp_nistz256_select_w5(&h, table, wvalue >> 1);
+
+      ecp_nistz256_neg(tmp, h.Y);
+      copy_conditional(h.Y, tmp, (wvalue & 1));
+
+      ecp_nistz256_point_add(r, r, &h);
+    }
+
+    index -= kWindowSize;
+
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+    ecp_nistz256_point_double(r, r);
+  }
+
+  // Final window
+  wvalue = p_str[0];
+  wvalue = (wvalue << 1) & kMask;
+
+  wvalue = booth_recode_w5(wvalue);
+
+  ecp_nistz256_select_w5(&h, table, wvalue >> 1);
+
+  ecp_nistz256_neg(tmp, h.Y);
+  copy_conditional(h.Y, tmp, wvalue & 1);
+
+  ecp_nistz256_point_add(r, r, &h);
+}
+
+typedef union {
+  P256_POINT p;
+  P256_POINT_AFFINE a;
+} p256_point_union_t;
+
+static unsigned calc_first_wvalue(unsigned *index, const uint8_t p_str[33]) {
+  static const unsigned kWindowSize = 7;
+  static const unsigned kMask = (1 << (7 /* kWindowSize */ + 1)) - 1;
+  *index = kWindowSize;
+
+  unsigned wvalue = (p_str[0] << 1) & kMask;
+  return booth_recode_w7(wvalue);
+}
+
+static unsigned calc_wvalue(unsigned *index, const uint8_t p_str[33]) {
+  static const unsigned kWindowSize = 7;
+  static const unsigned kMask = (1 << (7 /* kWindowSize */ + 1)) - 1;
+
+  const unsigned off = (*index - 1) / 8;
+  unsigned wvalue = p_str[off] | p_str[off + 1] << 8;
+  wvalue = (wvalue >> ((*index - 1) % 8)) & kMask;
+  *index += kWindowSize;
+
+  return booth_recode_w7(wvalue);
+}
+
+static void ecp_nistz256_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                   const EC_RAW_POINT *p,
+                                   const EC_SCALAR *scalar) {
+  alignas(32) P256_POINT out;
+  ecp_nistz256_windowed_mul(group, &out, p, scalar);
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, out.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, out.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, out.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_point_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                                        const EC_SCALAR *scalar) {
+  alignas(32) p256_point_union_t t, p;
+
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // First window
+  unsigned index = 0;
+  unsigned wvalue = calc_first_wvalue(&index, p_str);
+
+  ecp_nistz256_select_w7(&p.a, ecp_nistz256_precomputed[0], wvalue >> 1);
+  ecp_nistz256_neg(p.p.Z, p.p.Y);
+  copy_conditional(p.p.Y, p.p.Z, wvalue & 1);
+
+  // Convert |p| from affine to Jacobian coordinates. We set Z to zero if |p|
+  // is infinity and |ONE| otherwise. |p| was computed from the table, so it
+  // is infinity iff |wvalue >> 1| is zero.
+  OPENSSL_memset(p.p.Z, 0, sizeof(p.p.Z));
+  copy_conditional(p.p.Z, ONE, is_not_zero(wvalue >> 1));
+
+  for (int i = 1; i < 37; i++) {
+    wvalue = calc_wvalue(&index, p_str);
+
+    ecp_nistz256_select_w7(&t.a, ecp_nistz256_precomputed[i], wvalue >> 1);
+
+    ecp_nistz256_neg(t.p.Z, t.a.Y);
+    copy_conditional(t.a.Y, t.p.Z, wvalue & 1);
+
+    // Note |ecp_nistz256_point_add_affine| does not work if |p.p| and |t.a|
+    // are the same non-infinity point.
+    ecp_nistz256_point_add_affine(&p.p, &p.p, &t.a);
+  }
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, p.p.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, p.p.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, p.p.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_points_mul_public(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *g_scalar,
+                                           const EC_RAW_POINT *p_,
+                                           const EC_SCALAR *p_scalar) {
+  assert(p_ != NULL && p_scalar != NULL && g_scalar != NULL);
+
+  alignas(32) p256_point_union_t t, p;
+  uint8_t p_str[33];
+  OPENSSL_memcpy(p_str, g_scalar->bytes, 32);
+  p_str[32] = 0;
+
+  // First window
+  unsigned index = 0;
+  unsigned wvalue = calc_first_wvalue(&index, p_str);
+
+  // Convert |p| from affine to Jacobian coordinates. We set Z to zero if |p|
+  // is infinity and |ONE| otherwise. |p| was computed from the table, so it
+  // is infinity iff |wvalue >> 1| is zero.
+  if ((wvalue >> 1) != 0) {
+    OPENSSL_memcpy(&p.a, &ecp_nistz256_precomputed[0][(wvalue >> 1) - 1],
+                   sizeof(p.a));
+    OPENSSL_memcpy(&p.p.Z, ONE, sizeof(p.p.Z));
+  } else {
+    OPENSSL_memset(&p.a, 0, sizeof(p.a));
+    OPENSSL_memset(p.p.Z, 0, sizeof(p.p.Z));
+  }
+
+  if ((wvalue & 1) == 1) {
+    ecp_nistz256_neg(p.p.Y, p.p.Y);
+  }
+
+  for (int i = 1; i < 37; i++) {
+    wvalue = calc_wvalue(&index, p_str);
+
+    if ((wvalue >> 1) == 0) {
+      continue;
+    }
+
+    OPENSSL_memcpy(&t.a, &ecp_nistz256_precomputed[i][(wvalue >> 1) - 1],
+                   sizeof(p.a));
+
+    if ((wvalue & 1) == 1) {
+      ecp_nistz256_neg(t.a.Y, t.a.Y);
+    }
+
+    // Note |ecp_nistz256_point_add_affine| does not work if |p.p| and |t.a|
+    // are the same non-infinity point, so it is important that we compute the
+    // |g_scalar| term before the |p_scalar| term.
+    ecp_nistz256_point_add_affine(&p.p, &p.p, &t.a);
+  }
+
+  ecp_nistz256_windowed_mul(group, &t.p, p_, p_scalar);
+  ecp_nistz256_point_add(&p.p, &p.p, &t.p);
+
+  assert(group->field.width == P256_LIMBS);
+  OPENSSL_memcpy(r->X.words, p.p.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, p.p.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, p.p.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static int ecp_nistz256_get_affine(const EC_GROUP *group,
+                                   const EC_RAW_POINT *point, EC_FELEM *x,
+                                   EC_FELEM *y) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  BN_ULONG z_inv2[P256_LIMBS];
+  BN_ULONG z_inv3[P256_LIMBS];
+  assert(group->field.width == P256_LIMBS);
+  ecp_nistz256_mod_inverse_mont(z_inv3, point->Z.words);
+  ecp_nistz256_sqr_mont(z_inv2, z_inv3);
+
+  // Instead of using |ecp_nistz256_from_mont| to convert the |x| coordinate
+  // and then calling |ecp_nistz256_from_mont| again to convert the |y|
+  // coordinate below, convert the common factor |z_inv2| once now, saving one
+  // reduction.
+  ecp_nistz256_from_mont(z_inv2, z_inv2);
+
+  if (x != NULL) {
+    ecp_nistz256_mul_mont(x->words, z_inv2, point->X.words);
+  }
+
+  if (y != NULL) {
+    ecp_nistz256_mul_mont(z_inv3, z_inv3, z_inv2);
+    ecp_nistz256_mul_mont(y->words, z_inv3, point->Y.words);
+  }
+
+  return 1;
+}
+
+static void ecp_nistz256_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_RAW_POINT *a_, const EC_RAW_POINT *b_) {
+  P256_POINT a, b;
+  OPENSSL_memcpy(a.X, a_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Y, a_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Z, a_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.X, b_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.Y, b_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(b.Z, b_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  ecp_nistz256_point_add(&a, &a, &b);
+  OPENSSL_memcpy(r->X.words, a.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, a.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, a.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                             const EC_RAW_POINT *a_) {
+  P256_POINT a;
+  OPENSSL_memcpy(a.X, a_->X.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Y, a_->Y.words, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(a.Z, a_->Z.words, P256_LIMBS * sizeof(BN_ULONG));
+  ecp_nistz256_point_double(&a, &a);
+  OPENSSL_memcpy(r->X.words, a.X, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Y.words, a.Y, P256_LIMBS * sizeof(BN_ULONG));
+  OPENSSL_memcpy(r->Z.words, a.Z, P256_LIMBS * sizeof(BN_ULONG));
+}
+
+static void ecp_nistz256_inv_mod_ord(const EC_GROUP *group, EC_SCALAR *out,
+                                     const EC_SCALAR *in) {
+  // table[i] stores a power of |in| corresponding to the matching enum value.
+  enum {
+    // The following indices specify the power in binary.
+    i_1 = 0,
+    i_10,
+    i_11,
+    i_101,
+    i_111,
+    i_1010,
+    i_1111,
+    i_10101,
+    i_101010,
+    i_101111,
+    // The following indices specify 2^N-1, or N ones in a row.
+    i_x6,
+    i_x8,
+    i_x16,
+    i_x32
+  };
+  BN_ULONG table[15][P256_LIMBS];
+
+  // https://briansmith.org/ecc-inversion-addition-chains-01#p256_scalar_inversion
+  //
+  // Even though this code path spares 12 squarings, 4.5%, and 13
+  // multiplications, 25%, the overall sign operation is not that much faster,
+  // not more that 2%. Most of the performance of this function comes from the
+  // scalar operations.
+
+  // Pre-calculate powers.
+  OPENSSL_memcpy(table[i_1], in->words, P256_LIMBS * sizeof(BN_ULONG));
+
+  ecp_nistz256_ord_sqr_mont(table[i_10], table[i_1], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_11], table[i_1], table[i_10]);
+
+  ecp_nistz256_ord_mul_mont(table[i_101], table[i_11], table[i_10]);
+
+  ecp_nistz256_ord_mul_mont(table[i_111], table[i_101], table[i_10]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_1010], table[i_101], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_1111], table[i_1010], table[i_101]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_10101], table[i_1010], 1);
+  ecp_nistz256_ord_mul_mont(table[i_10101], table[i_10101], table[i_1]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_101010], table[i_10101], 1);
+
+  ecp_nistz256_ord_mul_mont(table[i_101111], table[i_101010], table[i_101]);
+
+  ecp_nistz256_ord_mul_mont(table[i_x6], table[i_101010], table[i_10101]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x8], table[i_x6], 2);
+  ecp_nistz256_ord_mul_mont(table[i_x8], table[i_x8], table[i_11]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x16], table[i_x8], 8);
+  ecp_nistz256_ord_mul_mont(table[i_x16], table[i_x16], table[i_x8]);
+
+  ecp_nistz256_ord_sqr_mont(table[i_x32], table[i_x16], 16);
+  ecp_nistz256_ord_mul_mont(table[i_x32], table[i_x32], table[i_x16]);
+
+  // Compute |in| raised to the order-2.
+  ecp_nistz256_ord_sqr_mont(out->words, table[i_x32], 64);
+  ecp_nistz256_ord_mul_mont(out->words, out->words, table[i_x32]);
+  static const struct {
+    uint8_t p, i;
+  } kChain[27] = {{32, i_x32},    {6, i_101111}, {5, i_111},    {4, i_11},
+                  {5, i_1111},    {5, i_10101},  {4, i_101},    {3, i_101},
+                  {3, i_101},     {5, i_111},    {9, i_101111}, {6, i_1111},
+                  {2, i_1},       {5, i_1},      {6, i_1111},   {5, i_111},
+                  {4, i_111},     {5, i_111},    {5, i_101},    {3, i_11},
+                  {10, i_101111}, {2, i_11},     {5, i_11},     {5, i_11},
+                  {3, i_1},       {7, i_10101},  {6, i_1111}};
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kChain); i++) {
+    ecp_nistz256_ord_sqr_mont(out->words, out->words, kChain[i].p);
+    ecp_nistz256_ord_mul_mont(out->words, out->words, table[kChain[i].i]);
+  }
+}
+
+static int ecp_nistz256_mont_inv_mod_ord_vartime(const EC_GROUP *group,
+                                                 EC_SCALAR *out,
+                                                 const EC_SCALAR *in) {
+  if ((OPENSSL_ia32cap_get()[1] & (1 << 28)) == 0) {
+    // No AVX support; fallback to generic code.
+    return ec_GFp_simple_mont_inv_mod_ord_vartime(group, out, in);
+  }
+
+  assert(group->order.width == P256_LIMBS);
+  if (!beeu_mod_inverse_vartime(out->words, in->words, group->order.d)) {
+    return 0;
+  }
+
+  // The result should be returned in the Montgomery domain.
+  ec_scalar_to_montgomery(group, out, out);
+  return 1;
+}
+
+static int ecp_nistz256_cmp_x_coordinate(const EC_GROUP *group,
+                                         const EC_RAW_POINT *p,
+                                         const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  assert(group->order.width == P256_LIMBS);
+  assert(group->field.width == P256_LIMBS);
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  BN_ULONG r_Z2[P256_LIMBS], Z2_mont[P256_LIMBS], X[P256_LIMBS];
+  ecp_nistz256_mul_mont(Z2_mont, p->Z.words, p->Z.words);
+  ecp_nistz256_mul_mont(r_Z2, r->words, Z2_mont);
+  ecp_nistz256_from_mont(X, p->X.words);
+
+  if (OPENSSL_memcmp(r_Z2, X, sizeof(r_Z2)) == 0) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         P256_LIMBS)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    bn_add_words(r_Z2, r->words, group->order.d, P256_LIMBS);
+    ecp_nistz256_mul_mont(r_Z2, r_Z2, Z2_mont);
+    if (OPENSSL_memcmp(r_Z2, X, sizeof(r_Z2)) == 0) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistz256_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates = ecp_nistz256_get_affine;
+  out->add = ecp_nistz256_add;
+  out->dbl = ecp_nistz256_dbl;
+  out->mul = ecp_nistz256_point_mul;
+  out->mul_base = ecp_nistz256_point_mul_base;
+  out->mul_public = ecp_nistz256_points_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ecp_nistz256_inv_mod_ord;
+  out->scalar_inv_montgomery_vartime = ecp_nistz256_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ecp_nistz256_cmp_x_coordinate;
+}
+
+#endif /* !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+          !defined(OPENSSL_SMALL) */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h
new file mode 100644
index 0000000..f349252
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2014, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ *
+ * Reference:
+ * S.Gueron and V.Krasnov, "Fast Prime Field Elliptic Curve Cryptography with
+ *                          256 Bit Primes"
+ */
+
+#ifndef OPENSSL_HEADER_EC_P256_X86_64_H
+#define OPENSSL_HEADER_EC_P256_X86_64_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bn.h>
+
+#include "../bn/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+
+// P-256 field operations.
+//
+// An element mod P in P-256 is represented as a little-endian array of
+// |P256_LIMBS| |BN_ULONG|s, spanning the full range of values.
+//
+// The following functions take fully-reduced inputs mod P and give
+// fully-reduced outputs. They may be used in-place.
+
+#define P256_LIMBS (256 / BN_BITS2)
+
+// ecp_nistz256_neg sets |res| to -|a| mod P.
+void ecp_nistz256_neg(BN_ULONG res[P256_LIMBS], const BN_ULONG a[P256_LIMBS]);
+
+// ecp_nistz256_mul_mont sets |res| to |a| * |b| * 2^-256 mod P.
+void ecp_nistz256_mul_mont(BN_ULONG res[P256_LIMBS],
+                           const BN_ULONG a[P256_LIMBS],
+                           const BN_ULONG b[P256_LIMBS]);
+
+// ecp_nistz256_sqr_mont sets |res| to |a| * |a| * 2^-256 mod P.
+void ecp_nistz256_sqr_mont(BN_ULONG res[P256_LIMBS],
+                           const BN_ULONG a[P256_LIMBS]);
+
+// ecp_nistz256_from_mont sets |res| to |in|, converted from Montgomery domain
+// by multiplying with 1.
+static inline void ecp_nistz256_from_mont(BN_ULONG res[P256_LIMBS],
+                                          const BN_ULONG in[P256_LIMBS]) {
+  static const BN_ULONG ONE[P256_LIMBS] = { 1 };
+  ecp_nistz256_mul_mont(res, in, ONE);
+}
+
+// ecp_nistz256_to_mont sets |res| to |in|, converted to Montgomery domain
+// by multiplying with RR = 2^512 mod P precomputed for NIST P256 curve.
+static inline void ecp_nistz256_to_mont(BN_ULONG res[P256_LIMBS],
+                                        const BN_ULONG in[P256_LIMBS]) {
+  static const BN_ULONG RR[P256_LIMBS] = {
+      TOBN(0x00000000, 0x00000003), TOBN(0xfffffffb, 0xffffffff),
+      TOBN(0xffffffff, 0xfffffffe), TOBN(0x00000004, 0xfffffffd)};
+  ecp_nistz256_mul_mont(res, in, RR);
+}
+
+
+// P-256 scalar operations.
+//
+// The following functions compute modulo N, where N is the order of P-256. They
+// take fully-reduced inputs and give fully-reduced outputs.
+
+// ecp_nistz256_ord_mul_mont sets |res| to |a| * |b| where inputs and outputs
+// are in Montgomery form. That is, |res| is |a| * |b| * 2^-256 mod N.
+void ecp_nistz256_ord_mul_mont(BN_ULONG res[P256_LIMBS],
+                               const BN_ULONG a[P256_LIMBS],
+                               const BN_ULONG b[P256_LIMBS]);
+
+// ecp_nistz256_ord_sqr_mont sets |res| to |a|^(2*|rep|) where inputs and
+// outputs are in Montgomery form. That is, |res| is
+// (|a| * 2^-256)^(2*|rep|) * 2^256 mod N.
+void ecp_nistz256_ord_sqr_mont(BN_ULONG res[P256_LIMBS],
+                               const BN_ULONG a[P256_LIMBS], BN_ULONG rep);
+
+// beeu_mod_inverse_vartime sets out = a^-1 mod p using a Euclidean algorithm.
+// Assumption: 0 < a < p < 2^(256) and p is odd.
+int beeu_mod_inverse_vartime(BN_ULONG out[P256_LIMBS],
+                             const BN_ULONG a[P256_LIMBS],
+                             const BN_ULONG p[P256_LIMBS]);
+
+
+// P-256 point operations.
+//
+// The following functions may be used in-place. All coordinates are in the
+// Montgomery domain.
+
+// A P256_POINT represents a P-256 point in Jacobian coordinates.
+typedef struct {
+  BN_ULONG X[P256_LIMBS];
+  BN_ULONG Y[P256_LIMBS];
+  BN_ULONG Z[P256_LIMBS];
+} P256_POINT;
+
+// A P256_POINT_AFFINE represents a P-256 point in affine coordinates. Infinity
+// is encoded as (0, 0).
+typedef struct {
+  BN_ULONG X[P256_LIMBS];
+  BN_ULONG Y[P256_LIMBS];
+} P256_POINT_AFFINE;
+
+// ecp_nistz256_select_w5 sets |*val| to |in_t[index-1]| if 1 <= |index| <= 16
+// and all zeros (the point at infinity) if |index| is 0. This is done in
+// constant time.
+void ecp_nistz256_select_w5(P256_POINT *val, const P256_POINT in_t[16],
+                            int index);
+
+// ecp_nistz256_select_w7 sets |*val| to |in_t[index-1]| if 1 <= |index| <= 64
+// and all zeros (the point at infinity) if |index| is 0. This is done in
+// constant time.
+void ecp_nistz256_select_w7(P256_POINT_AFFINE *val,
+                            const P256_POINT_AFFINE in_t[64], int index);
+
+// ecp_nistz256_point_double sets |r| to |a| doubled.
+void ecp_nistz256_point_double(P256_POINT *r, const P256_POINT *a);
+
+// ecp_nistz256_point_add adds |a| to |b| and places the result in |r|.
+void ecp_nistz256_point_add(P256_POINT *r, const P256_POINT *a,
+                            const P256_POINT *b);
+
+// ecp_nistz256_point_add_affine adds |a| to |b| and places the result in
+// |r|. |a| and |b| must not represent the same point unless they are both
+// infinity.
+void ecp_nistz256_point_add_affine(P256_POINT *r, const P256_POINT *a,
+                                   const P256_POINT_AFFINE *b);
+
+#endif /* !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+           !defined(OPENSSL_SMALL) */
+
+
+#if defined(__cplusplus)
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_EC_P256_X86_64_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h.grpc_back
new file mode 100644
index 0000000..5deb81a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/p256-x86_64.h.grpc_back	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2014, Intel Corporation. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Shay Gueron (1, 2), and Vlad Krasnov (1)
+ * (1) Intel Corporation, Israel Development Center, Haifa, Israel
+ * (2) University of Haifa, Israel
+ *
+ * Reference:
+ * S.Gueron and V.Krasnov, "Fast Prime Field Elliptic Curve Cryptography with
+ *                          256 Bit Primes"
+ */
+
+#ifndef OPENSSL_HEADER_EC_P256_X86_64_H
+#define OPENSSL_HEADER_EC_P256_X86_64_H
+
+#include <openssl/base.h>
+
+#include <openssl/bn.h>
+
+#include "../bn/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+    !defined(OPENSSL_SMALL)
+
+// P-256 field operations.
+//
+// An element mod P in P-256 is represented as a little-endian array of
+// |P256_LIMBS| |BN_ULONG|s, spanning the full range of values.
+//
+// The following functions take fully-reduced inputs mod P and give
+// fully-reduced outputs. They may be used in-place.
+
+#define P256_LIMBS (256 / BN_BITS2)
+
+// ecp_nistz256_neg sets |res| to -|a| mod P.
+void ecp_nistz256_neg(BN_ULONG res[P256_LIMBS], const BN_ULONG a[P256_LIMBS]);
+
+// ecp_nistz256_mul_mont sets |res| to |a| * |b| * 2^-256 mod P.
+void ecp_nistz256_mul_mont(BN_ULONG res[P256_LIMBS],
+                           const BN_ULONG a[P256_LIMBS],
+                           const BN_ULONG b[P256_LIMBS]);
+
+// ecp_nistz256_sqr_mont sets |res| to |a| * |a| * 2^-256 mod P.
+void ecp_nistz256_sqr_mont(BN_ULONG res[P256_LIMBS],
+                           const BN_ULONG a[P256_LIMBS]);
+
+// ecp_nistz256_from_mont sets |res| to |in|, converted from Montgomery domain
+// by multiplying with 1.
+static inline void ecp_nistz256_from_mont(BN_ULONG res[P256_LIMBS],
+                                          const BN_ULONG in[P256_LIMBS]) {
+  static const BN_ULONG ONE[P256_LIMBS] = { 1 };
+  ecp_nistz256_mul_mont(res, in, ONE);
+}
+
+// ecp_nistz256_to_mont sets |res| to |in|, converted to Montgomery domain
+// by multiplying with RR = 2^512 mod P precomputed for NIST P256 curve.
+static inline void ecp_nistz256_to_mont(BN_ULONG res[P256_LIMBS],
+                                        const BN_ULONG in[P256_LIMBS]) {
+  static const BN_ULONG RR[P256_LIMBS] = {
+      TOBN(0x00000000, 0x00000003), TOBN(0xfffffffb, 0xffffffff),
+      TOBN(0xffffffff, 0xfffffffe), TOBN(0x00000004, 0xfffffffd)};
+  ecp_nistz256_mul_mont(res, in, RR);
+}
+
+
+// P-256 scalar operations.
+//
+// The following functions compute modulo N, where N is the order of P-256. They
+// take fully-reduced inputs and give fully-reduced outputs.
+
+// ecp_nistz256_ord_mul_mont sets |res| to |a| * |b| where inputs and outputs
+// are in Montgomery form. That is, |res| is |a| * |b| * 2^-256 mod N.
+void ecp_nistz256_ord_mul_mont(BN_ULONG res[P256_LIMBS],
+                               const BN_ULONG a[P256_LIMBS],
+                               const BN_ULONG b[P256_LIMBS]);
+
+// ecp_nistz256_ord_sqr_mont sets |res| to |a|^(2*|rep|) where inputs and
+// outputs are in Montgomery form. That is, |res| is
+// (|a| * 2^-256)^(2*|rep|) * 2^256 mod N.
+void ecp_nistz256_ord_sqr_mont(BN_ULONG res[P256_LIMBS],
+                               const BN_ULONG a[P256_LIMBS], BN_ULONG rep);
+
+// beeu_mod_inverse_vartime sets out = a^-1 mod p using a Euclidean algorithm.
+// Assumption: 0 < a < p < 2^(256) and p is odd.
+int beeu_mod_inverse_vartime(BN_ULONG out[P256_LIMBS],
+                             const BN_ULONG a[P256_LIMBS],
+                             const BN_ULONG p[P256_LIMBS]);
+
+
+// P-256 point operations.
+//
+// The following functions may be used in-place. All coordinates are in the
+// Montgomery domain.
+
+// A P256_POINT represents a P-256 point in Jacobian coordinates.
+typedef struct {
+  BN_ULONG X[P256_LIMBS];
+  BN_ULONG Y[P256_LIMBS];
+  BN_ULONG Z[P256_LIMBS];
+} P256_POINT;
+
+// A P256_POINT_AFFINE represents a P-256 point in affine coordinates. Infinity
+// is encoded as (0, 0).
+typedef struct {
+  BN_ULONG X[P256_LIMBS];
+  BN_ULONG Y[P256_LIMBS];
+} P256_POINT_AFFINE;
+
+// ecp_nistz256_select_w5 sets |*val| to |in_t[index-1]| if 1 <= |index| <= 16
+// and all zeros (the point at infinity) if |index| is 0. This is done in
+// constant time.
+void ecp_nistz256_select_w5(P256_POINT *val, const P256_POINT in_t[16],
+                            int index);
+
+// ecp_nistz256_select_w7 sets |*val| to |in_t[index-1]| if 1 <= |index| <= 64
+// and all zeros (the point at infinity) if |index| is 0. This is done in
+// constant time.
+void ecp_nistz256_select_w7(P256_POINT_AFFINE *val,
+                            const P256_POINT_AFFINE in_t[64], int index);
+
+// ecp_nistz256_point_double sets |r| to |a| doubled.
+void ecp_nistz256_point_double(P256_POINT *r, const P256_POINT *a);
+
+// ecp_nistz256_point_add adds |a| to |b| and places the result in |r|.
+void ecp_nistz256_point_add(P256_POINT *r, const P256_POINT *a,
+                            const P256_POINT *b);
+
+// ecp_nistz256_point_add_affine adds |a| to |b| and places the result in
+// |r|. |a| and |b| must not represent the same point unless they are both
+// infinity.
+void ecp_nistz256_point_add_affine(P256_POINT *r, const P256_POINT *a,
+                                   const P256_POINT_AFFINE *b);
+
+#endif /* !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && \
+           !defined(OPENSSL_SMALL) */
+
+
+#if defined(__cplusplus)
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_EC_P256_X86_64_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c
new file mode 100644
index 0000000..2caf2f0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c	
@@ -0,0 +1,96 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+int ec_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                        const BIGNUM *in) {
+  if (!bn_copy_words(out->words, group->order.width, in) ||
+      !bn_less_than_words(out->words, group->order.d, group->order.width)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_SCALAR);
+    return 0;
+  }
+  return 1;
+}
+
+int ec_scalar_equal_vartime(const EC_GROUP *group, const EC_SCALAR *a,
+                            const EC_SCALAR *b) {
+  return OPENSSL_memcmp(a->words, b->words,
+                        group->order.width * sizeof(BN_ULONG)) == 0;
+}
+
+int ec_scalar_is_zero(const EC_GROUP *group, const EC_SCALAR *a) {
+  BN_ULONG mask = 0;
+  for (int i = 0; i < group->order.width; i++) {
+    mask |= a->words[i];
+  }
+  return mask == 0;
+}
+
+int ec_random_nonzero_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t additional_data[32]) {
+  return bn_rand_range_words(out->words, 1, group->order.d, group->order.width,
+                             additional_data);
+}
+
+void ec_scalar_add(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
+                   const EC_SCALAR *b) {
+  const BIGNUM *order = &group->order;
+  BN_ULONG tmp[EC_MAX_WORDS];
+  bn_mod_add_words(r->words, a->words, b->words, order->d, tmp, order->width);
+  OPENSSL_cleanse(tmp, sizeof(tmp));
+}
+
+void ec_scalar_to_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                             const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_to_montgomery_small(r->words, a->words, order->width, group->order_mont);
+}
+
+void ec_scalar_from_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                               const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_from_montgomery_small(r->words, a->words, order->width, group->order_mont);
+}
+
+void ec_scalar_mul_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a, const EC_SCALAR *b) {
+  const BIGNUM *order = &group->order;
+  bn_mod_mul_montgomery_small(r->words, a->words, b->words, order->width,
+                              group->order_mont);
+}
+
+void ec_simple_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_mod_inverse_prime_mont_small(r->words, a->words, order->width,
+                                  group->order_mont);
+}
+
+void ec_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a) {
+  group->meth->scalar_inv_montgomery(group, r, a);
+}
+
+int ec_scalar_inv_montgomery_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a) {
+  return group->meth->scalar_inv_montgomery_vartime(group, r, a);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c.grpc_back
new file mode 100644
index 0000000..82f2a50
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/scalar.c.grpc_back	
@@ -0,0 +1,96 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+int ec_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                        const BIGNUM *in) {
+  if (!bn_copy_words(out->words, group->order.width, in) ||
+      !bn_less_than_words(out->words, group->order.d, group->order.width)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_SCALAR);
+    return 0;
+  }
+  return 1;
+}
+
+int ec_scalar_equal_vartime(const EC_GROUP *group, const EC_SCALAR *a,
+                            const EC_SCALAR *b) {
+  return OPENSSL_memcmp(a->words, b->words,
+                        group->order.width * sizeof(BN_ULONG)) == 0;
+}
+
+int ec_scalar_is_zero(const EC_GROUP *group, const EC_SCALAR *a) {
+  BN_ULONG mask = 0;
+  for (int i = 0; i < group->order.width; i++) {
+    mask |= a->words[i];
+  }
+  return mask == 0;
+}
+
+int ec_random_nonzero_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t additional_data[32]) {
+  return bn_rand_range_words(out->words, 1, group->order.d, group->order.width,
+                             additional_data);
+}
+
+void ec_scalar_add(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
+                   const EC_SCALAR *b) {
+  const BIGNUM *order = &group->order;
+  BN_ULONG tmp[EC_MAX_WORDS];
+  bn_mod_add_words(r->words, a->words, b->words, order->d, tmp, order->width);
+  OPENSSL_cleanse(tmp, sizeof(tmp));
+}
+
+void ec_scalar_to_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                             const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_to_montgomery_small(r->words, a->words, order->width, group->order_mont);
+}
+
+void ec_scalar_from_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                               const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_from_montgomery_small(r->words, a->words, order->width, group->order_mont);
+}
+
+void ec_scalar_mul_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a, const EC_SCALAR *b) {
+  const BIGNUM *order = &group->order;
+  bn_mod_mul_montgomery_small(r->words, a->words, b->words, order->width,
+                              group->order_mont);
+}
+
+void ec_simple_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a) {
+  const BIGNUM *order = &group->order;
+  bn_mod_inverse_prime_mont_small(r->words, a->words, order->width,
+                                  group->order_mont);
+}
+
+void ec_scalar_inv_montgomery(const EC_GROUP *group, EC_SCALAR *r,
+                              const EC_SCALAR *a) {
+  group->meth->scalar_inv_montgomery(group, r, a);
+}
+
+int ec_scalar_inv_montgomery_vartime(const EC_GROUP *group, EC_SCALAR *r,
+                                     const EC_SCALAR *a) {
+  return group->meth->scalar_inv_montgomery_vartime(group, r, a);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c
new file mode 100644
index 0000000..c9110d7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c	
@@ -0,0 +1,380 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// Most method functions in this file are designed to work with non-trivial
+// representations of field elements if necessary (see ecp_mont.c): while
+// standard modular addition and subtraction are used, the field_mul and
+// field_sqr methods will be used for multiplication, and field_encode and
+// field_decode (if defined) will be used for converting between
+// representations.
+//
+// Functions here specifically assume that if a non-trivial representation is
+// used, it is a Montgomery representation (i.e. 'encoding' means multiplying
+// by some factor R).
+
+int ec_GFp_simple_group_init(EC_GROUP *group) {
+  BN_init(&group->field);
+  group->a_is_minus3 = 0;
+  return 1;
+}
+
+void ec_GFp_simple_group_finish(EC_GROUP *group) {
+  BN_free(&group->field);
+}
+
+int ec_GFp_simple_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+                                  const BIGNUM *a, const BIGNUM *b,
+                                  BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX *new_ctx = NULL;
+
+  // p must be a prime > 3
+  if (BN_num_bits(p) <= 2 || !BN_is_odd(p)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FIELD);
+    return 0;
+  }
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  // group->field
+  if (!BN_copy(&group->field, p)) {
+    goto err;
+  }
+  BN_set_negative(&group->field, 0);
+  // Store the field in minimal form, so it can be used with |BN_ULONG| arrays.
+  bn_set_minimal_width(&group->field);
+
+  // group->a
+  if (!BN_nnmod(tmp, a, &group->field, ctx) ||
+      !ec_bignum_to_felem(group, &group->a, tmp)) {
+    goto err;
+  }
+
+  // group->a_is_minus3
+  if (!BN_add_word(tmp, 3)) {
+    goto err;
+  }
+  group->a_is_minus3 = (0 == BN_cmp(tmp, &group->field));
+
+  // group->b
+  if (!BN_nnmod(tmp, b, &group->field, ctx) ||
+      !ec_bignum_to_felem(group, &group->b, tmp)) {
+    goto err;
+  }
+
+  if (!ec_bignum_to_felem(group, &group->one, BN_value_one())) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int ec_GFp_simple_group_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
+                                  BIGNUM *b) {
+  if ((p != NULL && !BN_copy(p, &group->field)) ||
+      (a != NULL && !ec_felem_to_bignum(group, a, &group->a)) ||
+      (b != NULL && !ec_felem_to_bignum(group, b, &group->b))) {
+    return 0;
+  }
+  return 1;
+}
+
+void ec_GFp_simple_point_init(EC_RAW_POINT *point) {
+  OPENSSL_memset(&point->X, 0, sizeof(EC_FELEM));
+  OPENSSL_memset(&point->Y, 0, sizeof(EC_FELEM));
+  OPENSSL_memset(&point->Z, 0, sizeof(EC_FELEM));
+}
+
+void ec_GFp_simple_point_copy(EC_RAW_POINT *dest, const EC_RAW_POINT *src) {
+  OPENSSL_memcpy(&dest->X, &src->X, sizeof(EC_FELEM));
+  OPENSSL_memcpy(&dest->Y, &src->Y, sizeof(EC_FELEM));
+  OPENSSL_memcpy(&dest->Z, &src->Z, sizeof(EC_FELEM));
+}
+
+void ec_GFp_simple_point_set_to_infinity(const EC_GROUP *group,
+                                         EC_RAW_POINT *point) {
+  // Although it is strictly only necessary to zero Z, we zero the entire point
+  // in case |point| was stack-allocated and yet to be initialized.
+  ec_GFp_simple_point_init(point);
+}
+
+int ec_GFp_simple_point_set_affine_coordinates(const EC_GROUP *group,
+                                               EC_RAW_POINT *point,
+                                               const BIGNUM *x,
+                                               const BIGNUM *y) {
+  if (x == NULL || y == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (!ec_bignum_to_felem(group, &point->X, x) ||
+      !ec_bignum_to_felem(group, &point->Y, y)) {
+    return 0;
+  }
+  OPENSSL_memcpy(&point->Z, &group->one, sizeof(EC_FELEM));
+
+  return 1;
+}
+
+void ec_GFp_simple_invert(const EC_GROUP *group, EC_RAW_POINT *point) {
+  ec_felem_neg(group, &point->Y, &point->Y);
+}
+
+int ec_GFp_simple_is_at_infinity(const EC_GROUP *group,
+                                 const EC_RAW_POINT *point) {
+  return ec_felem_non_zero_mask(group, &point->Z) == 0;
+}
+
+int ec_GFp_simple_is_on_curve(const EC_GROUP *group,
+                              const EC_RAW_POINT *point) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    return 1;
+  }
+
+  // We have a curve defined by a Weierstrass equation
+  //      y^2 = x^3 + a*x + b.
+  // The point to consider is given in Jacobian projective coordinates
+  // where  (X, Y, Z)  represents  (x, y) = (X/Z^2, Y/Z^3).
+  // Substituting this and multiplying by  Z^6  transforms the above equation
+  // into
+  //      Y^2 = X^3 + a*X*Z^4 + b*Z^6.
+  // To test this, we add up the right-hand side in 'rh'.
+
+  void (*const felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                          const EC_FELEM *b) = group->meth->felem_mul;
+  void (*const felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a) =
+      group->meth->felem_sqr;
+
+  // rh := X^2
+  EC_FELEM rh;
+  felem_sqr(group, &rh, &point->X);
+
+  EC_FELEM tmp, Z4, Z6;
+  if (!ec_felem_equal(group, &point->Z, &group->one)) {
+    felem_sqr(group, &tmp, &point->Z);
+    felem_sqr(group, &Z4, &tmp);
+    felem_mul(group, &Z6, &Z4, &tmp);
+
+    // rh := (rh + a*Z^4)*X
+    if (group->a_is_minus3) {
+      ec_felem_add(group, &tmp, &Z4, &Z4);
+      ec_felem_add(group, &tmp, &tmp, &Z4);
+      ec_felem_sub(group, &rh, &rh, &tmp);
+      felem_mul(group, &rh, &rh, &point->X);
+    } else {
+      felem_mul(group, &tmp, &Z4, &group->a);
+      ec_felem_add(group, &rh, &rh, &tmp);
+      felem_mul(group, &rh, &rh, &point->X);
+    }
+
+    // rh := rh + b*Z^6
+    felem_mul(group, &tmp, &group->b, &Z6);
+    ec_felem_add(group, &rh, &rh, &tmp);
+  } else {
+    // rh := (rh + a)*X
+    ec_felem_add(group, &rh, &rh, &group->a);
+    felem_mul(group, &rh, &rh, &point->X);
+    // rh := rh + b
+    ec_felem_add(group, &rh, &rh, &group->b);
+  }
+
+  // 'lh' := Y^2
+  felem_sqr(group, &tmp, &point->Y);
+  return ec_felem_equal(group, &tmp, &rh);
+}
+
+int ec_GFp_simple_cmp(const EC_GROUP *group, const EC_RAW_POINT *a,
+                      const EC_RAW_POINT *b) {
+  // Note this function returns zero if |a| and |b| are equal and 1 if they are
+  // not equal.
+  if (ec_GFp_simple_is_at_infinity(group, a)) {
+    return ec_GFp_simple_is_at_infinity(group, b) ? 0 : 1;
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, b)) {
+    return 1;
+  }
+
+  int a_Z_is_one = ec_felem_equal(group, &a->Z, &group->one);
+  int b_Z_is_one = ec_felem_equal(group, &b->Z, &group->one);
+
+  if (a_Z_is_one && b_Z_is_one) {
+    return !ec_felem_equal(group, &a->X, &b->X) ||
+           !ec_felem_equal(group, &a->Y, &b->Y);
+  }
+
+  void (*const felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                          const EC_FELEM *b) = group->meth->felem_mul;
+  void (*const felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a) =
+      group->meth->felem_sqr;
+
+  // We have to decide whether
+  //     (X_a/Z_a^2, Y_a/Z_a^3) = (X_b/Z_b^2, Y_b/Z_b^3),
+  // or equivalently, whether
+  //     (X_a*Z_b^2, Y_a*Z_b^3) = (X_b*Z_a^2, Y_b*Z_a^3).
+
+  EC_FELEM tmp1, tmp2, Za23, Zb23;
+  const EC_FELEM *tmp1_, *tmp2_;
+  if (!b_Z_is_one) {
+    felem_sqr(group, &Zb23, &b->Z);
+    felem_mul(group, &tmp1, &a->X, &Zb23);
+    tmp1_ = &tmp1;
+  } else {
+    tmp1_ = &a->X;
+  }
+  if (!a_Z_is_one) {
+    felem_sqr(group, &Za23, &a->Z);
+    felem_mul(group, &tmp2, &b->X, &Za23);
+    tmp2_ = &tmp2;
+  } else {
+    tmp2_ = &b->X;
+  }
+
+  // Compare  X_a*Z_b^2  with  X_b*Z_a^2.
+  if (!ec_felem_equal(group, tmp1_, tmp2_)) {
+    return 1;  // The points differ.
+  }
+
+  if (!b_Z_is_one) {
+    felem_mul(group, &Zb23, &Zb23, &b->Z);
+    felem_mul(group, &tmp1, &a->Y, &Zb23);
+    // tmp1_ = &tmp1
+  } else {
+    tmp1_ = &a->Y;
+  }
+  if (!a_Z_is_one) {
+    felem_mul(group, &Za23, &Za23, &a->Z);
+    felem_mul(group, &tmp2, &b->Y, &Za23);
+    // tmp2_ = &tmp2
+  } else {
+    tmp2_ = &b->Y;
+  }
+
+  // Compare  Y_a*Z_b^3  with  Y_b*Z_a^3.
+  if (!ec_felem_equal(group, tmp1_, tmp2_)) {
+    return 1;  // The points differ.
+  }
+
+  // The points are equal.
+  return 0;
+}
+
+int ec_GFp_simple_mont_inv_mod_ord_vartime(const EC_GROUP *group,
+                                           EC_SCALAR *out,
+                                           const EC_SCALAR *in) {
+  // This implementation (in fact) runs in constant time,
+  // even though for this interface it is not mandatory.
+
+  // out = in^-1 in the Montgomery domain. This is
+  // |ec_scalar_to_montgomery| followed by |ec_scalar_inv_montgomery|, but
+  // |ec_scalar_inv_montgomery| followed by |ec_scalar_from_montgomery| is
+  // equivalent and slightly more efficient.
+  ec_scalar_inv_montgomery(group, out, in);
+  ec_scalar_from_montgomery(group, out, out);
+  return 1;
+}
+
+int ec_GFp_simple_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                                   const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    // |ec_get_x_coordinate_as_scalar| will check this internally, but this way
+    // we do not push to the error queue.
+    return 0;
+  }
+
+  EC_SCALAR x;
+  return ec_get_x_coordinate_as_scalar(group, &x, p) &&
+         ec_scalar_equal_vartime(group, &x, r);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c.grpc_back
new file mode 100644
index 0000000..c418c4e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple.c.grpc_back	
@@ -0,0 +1,380 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec.h>
+
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// Most method functions in this file are designed to work with non-trivial
+// representations of field elements if necessary (see ecp_mont.c): while
+// standard modular addition and subtraction are used, the field_mul and
+// field_sqr methods will be used for multiplication, and field_encode and
+// field_decode (if defined) will be used for converting between
+// representations.
+//
+// Functions here specifically assume that if a non-trivial representation is
+// used, it is a Montgomery representation (i.e. 'encoding' means multiplying
+// by some factor R).
+
+int ec_GFp_simple_group_init(EC_GROUP *group) {
+  BN_init(&group->field);
+  group->a_is_minus3 = 0;
+  return 1;
+}
+
+void ec_GFp_simple_group_finish(EC_GROUP *group) {
+  BN_free(&group->field);
+}
+
+int ec_GFp_simple_group_set_curve(EC_GROUP *group, const BIGNUM *p,
+                                  const BIGNUM *a, const BIGNUM *b,
+                                  BN_CTX *ctx) {
+  int ret = 0;
+  BN_CTX *new_ctx = NULL;
+
+  // p must be a prime > 3
+  if (BN_num_bits(p) <= 2 || !BN_is_odd(p)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INVALID_FIELD);
+    return 0;
+  }
+
+  if (ctx == NULL) {
+    ctx = new_ctx = BN_CTX_new();
+    if (ctx == NULL) {
+      return 0;
+    }
+  }
+
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  // group->field
+  if (!BN_copy(&group->field, p)) {
+    goto err;
+  }
+  BN_set_negative(&group->field, 0);
+  // Store the field in minimal form, so it can be used with |BN_ULONG| arrays.
+  bn_set_minimal_width(&group->field);
+
+  // group->a
+  if (!BN_nnmod(tmp, a, &group->field, ctx) ||
+      !ec_bignum_to_felem(group, &group->a, tmp)) {
+    goto err;
+  }
+
+  // group->a_is_minus3
+  if (!BN_add_word(tmp, 3)) {
+    goto err;
+  }
+  group->a_is_minus3 = (0 == BN_cmp(tmp, &group->field));
+
+  // group->b
+  if (!BN_nnmod(tmp, b, &group->field, ctx) ||
+      !ec_bignum_to_felem(group, &group->b, tmp)) {
+    goto err;
+  }
+
+  if (!ec_bignum_to_felem(group, &group->one, BN_value_one())) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(new_ctx);
+  return ret;
+}
+
+int ec_GFp_simple_group_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
+                                  BIGNUM *b) {
+  if ((p != NULL && !BN_copy(p, &group->field)) ||
+      (a != NULL && !ec_felem_to_bignum(group, a, &group->a)) ||
+      (b != NULL && !ec_felem_to_bignum(group, b, &group->b))) {
+    return 0;
+  }
+  return 1;
+}
+
+void ec_GFp_simple_point_init(EC_RAW_POINT *point) {
+  OPENSSL_memset(&point->X, 0, sizeof(EC_FELEM));
+  OPENSSL_memset(&point->Y, 0, sizeof(EC_FELEM));
+  OPENSSL_memset(&point->Z, 0, sizeof(EC_FELEM));
+}
+
+void ec_GFp_simple_point_copy(EC_RAW_POINT *dest, const EC_RAW_POINT *src) {
+  OPENSSL_memcpy(&dest->X, &src->X, sizeof(EC_FELEM));
+  OPENSSL_memcpy(&dest->Y, &src->Y, sizeof(EC_FELEM));
+  OPENSSL_memcpy(&dest->Z, &src->Z, sizeof(EC_FELEM));
+}
+
+void ec_GFp_simple_point_set_to_infinity(const EC_GROUP *group,
+                                         EC_RAW_POINT *point) {
+  // Although it is strictly only necessary to zero Z, we zero the entire point
+  // in case |point| was stack-allocated and yet to be initialized.
+  ec_GFp_simple_point_init(point);
+}
+
+int ec_GFp_simple_point_set_affine_coordinates(const EC_GROUP *group,
+                                               EC_RAW_POINT *point,
+                                               const BIGNUM *x,
+                                               const BIGNUM *y) {
+  if (x == NULL || y == NULL) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (!ec_bignum_to_felem(group, &point->X, x) ||
+      !ec_bignum_to_felem(group, &point->Y, y)) {
+    return 0;
+  }
+  OPENSSL_memcpy(&point->Z, &group->one, sizeof(EC_FELEM));
+
+  return 1;
+}
+
+void ec_GFp_simple_invert(const EC_GROUP *group, EC_RAW_POINT *point) {
+  ec_felem_neg(group, &point->Y, &point->Y);
+}
+
+int ec_GFp_simple_is_at_infinity(const EC_GROUP *group,
+                                 const EC_RAW_POINT *point) {
+  return ec_felem_non_zero_mask(group, &point->Z) == 0;
+}
+
+int ec_GFp_simple_is_on_curve(const EC_GROUP *group,
+                              const EC_RAW_POINT *point) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    return 1;
+  }
+
+  // We have a curve defined by a Weierstrass equation
+  //      y^2 = x^3 + a*x + b.
+  // The point to consider is given in Jacobian projective coordinates
+  // where  (X, Y, Z)  represents  (x, y) = (X/Z^2, Y/Z^3).
+  // Substituting this and multiplying by  Z^6  transforms the above equation
+  // into
+  //      Y^2 = X^3 + a*X*Z^4 + b*Z^6.
+  // To test this, we add up the right-hand side in 'rh'.
+
+  void (*const felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                          const EC_FELEM *b) = group->meth->felem_mul;
+  void (*const felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a) =
+      group->meth->felem_sqr;
+
+  // rh := X^2
+  EC_FELEM rh;
+  felem_sqr(group, &rh, &point->X);
+
+  EC_FELEM tmp, Z4, Z6;
+  if (!ec_felem_equal(group, &point->Z, &group->one)) {
+    felem_sqr(group, &tmp, &point->Z);
+    felem_sqr(group, &Z4, &tmp);
+    felem_mul(group, &Z6, &Z4, &tmp);
+
+    // rh := (rh + a*Z^4)*X
+    if (group->a_is_minus3) {
+      ec_felem_add(group, &tmp, &Z4, &Z4);
+      ec_felem_add(group, &tmp, &tmp, &Z4);
+      ec_felem_sub(group, &rh, &rh, &tmp);
+      felem_mul(group, &rh, &rh, &point->X);
+    } else {
+      felem_mul(group, &tmp, &Z4, &group->a);
+      ec_felem_add(group, &rh, &rh, &tmp);
+      felem_mul(group, &rh, &rh, &point->X);
+    }
+
+    // rh := rh + b*Z^6
+    felem_mul(group, &tmp, &group->b, &Z6);
+    ec_felem_add(group, &rh, &rh, &tmp);
+  } else {
+    // rh := (rh + a)*X
+    ec_felem_add(group, &rh, &rh, &group->a);
+    felem_mul(group, &rh, &rh, &point->X);
+    // rh := rh + b
+    ec_felem_add(group, &rh, &rh, &group->b);
+  }
+
+  // 'lh' := Y^2
+  felem_sqr(group, &tmp, &point->Y);
+  return ec_felem_equal(group, &tmp, &rh);
+}
+
+int ec_GFp_simple_cmp(const EC_GROUP *group, const EC_RAW_POINT *a,
+                      const EC_RAW_POINT *b) {
+  // Note this function returns zero if |a| and |b| are equal and 1 if they are
+  // not equal.
+  if (ec_GFp_simple_is_at_infinity(group, a)) {
+    return ec_GFp_simple_is_at_infinity(group, b) ? 0 : 1;
+  }
+
+  if (ec_GFp_simple_is_at_infinity(group, b)) {
+    return 1;
+  }
+
+  int a_Z_is_one = ec_felem_equal(group, &a->Z, &group->one);
+  int b_Z_is_one = ec_felem_equal(group, &b->Z, &group->one);
+
+  if (a_Z_is_one && b_Z_is_one) {
+    return !ec_felem_equal(group, &a->X, &b->X) ||
+           !ec_felem_equal(group, &a->Y, &b->Y);
+  }
+
+  void (*const felem_mul)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a,
+                          const EC_FELEM *b) = group->meth->felem_mul;
+  void (*const felem_sqr)(const EC_GROUP *, EC_FELEM *r, const EC_FELEM *a) =
+      group->meth->felem_sqr;
+
+  // We have to decide whether
+  //     (X_a/Z_a^2, Y_a/Z_a^3) = (X_b/Z_b^2, Y_b/Z_b^3),
+  // or equivalently, whether
+  //     (X_a*Z_b^2, Y_a*Z_b^3) = (X_b*Z_a^2, Y_b*Z_a^3).
+
+  EC_FELEM tmp1, tmp2, Za23, Zb23;
+  const EC_FELEM *tmp1_, *tmp2_;
+  if (!b_Z_is_one) {
+    felem_sqr(group, &Zb23, &b->Z);
+    felem_mul(group, &tmp1, &a->X, &Zb23);
+    tmp1_ = &tmp1;
+  } else {
+    tmp1_ = &a->X;
+  }
+  if (!a_Z_is_one) {
+    felem_sqr(group, &Za23, &a->Z);
+    felem_mul(group, &tmp2, &b->X, &Za23);
+    tmp2_ = &tmp2;
+  } else {
+    tmp2_ = &b->X;
+  }
+
+  // Compare  X_a*Z_b^2  with  X_b*Z_a^2.
+  if (!ec_felem_equal(group, tmp1_, tmp2_)) {
+    return 1;  // The points differ.
+  }
+
+  if (!b_Z_is_one) {
+    felem_mul(group, &Zb23, &Zb23, &b->Z);
+    felem_mul(group, &tmp1, &a->Y, &Zb23);
+    // tmp1_ = &tmp1
+  } else {
+    tmp1_ = &a->Y;
+  }
+  if (!a_Z_is_one) {
+    felem_mul(group, &Za23, &Za23, &a->Z);
+    felem_mul(group, &tmp2, &b->Y, &Za23);
+    // tmp2_ = &tmp2
+  } else {
+    tmp2_ = &b->Y;
+  }
+
+  // Compare  Y_a*Z_b^3  with  Y_b*Z_a^3.
+  if (!ec_felem_equal(group, tmp1_, tmp2_)) {
+    return 1;  // The points differ.
+  }
+
+  // The points are equal.
+  return 0;
+}
+
+int ec_GFp_simple_mont_inv_mod_ord_vartime(const EC_GROUP *group,
+                                           EC_SCALAR *out,
+                                           const EC_SCALAR *in) {
+  // This implementation (in fact) runs in constant time,
+  // even though for this interface it is not mandatory.
+
+  // out = in^-1 in the Montgomery domain. This is
+  // |ec_scalar_to_montgomery| followed by |ec_scalar_inv_montgomery|, but
+  // |ec_scalar_inv_montgomery| followed by |ec_scalar_from_montgomery| is
+  // equivalent and slightly more efficient.
+  ec_scalar_inv_montgomery(group, out, in);
+  ec_scalar_from_montgomery(group, out, out);
+  return 1;
+}
+
+int ec_GFp_simple_cmp_x_coordinate(const EC_GROUP *group, const EC_RAW_POINT *p,
+                                   const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    // |ec_get_x_coordinate_as_scalar| will check this internally, but this way
+    // we do not push to the error queue.
+    return 0;
+  }
+
+  EC_SCALAR x;
+  return ec_get_x_coordinate_as_scalar(group, &x, p) &&
+         ec_scalar_equal_vartime(group, &x, r);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c
new file mode 100644
index 0000000..ab043f4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c	
@@ -0,0 +1,84 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ec.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+void ec_GFp_mont_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *p, const EC_SCALAR *scalar) {
+  // This is a generic implementation for uncommon curves that not do not
+  // warrant a tuned one. It uses unsigned digits so that the doubling case in
+  // |ec_GFp_mont_add| is always unreachable, erring on safety and simplicity.
+
+  // Compute a table of the first 32 multiples of |p| (including infinity).
+  EC_RAW_POINT precomp[32];
+  ec_GFp_simple_point_set_to_infinity(group, &precomp[0]);
+  ec_GFp_simple_point_copy(&precomp[1], p);
+  for (size_t j = 2; j < OPENSSL_ARRAY_SIZE(precomp); j++) {
+    if (j & 1) {
+      ec_GFp_mont_add(group, &precomp[j], &precomp[1], &precomp[j - 1]);
+    } else {
+      ec_GFp_mont_dbl(group, &precomp[j], &precomp[j / 2]);
+    }
+  }
+
+  // Divide bits in |scalar| into windows.
+  unsigned bits = BN_num_bits(&group->order);
+  int r_is_at_infinity = 1;
+  for (unsigned i = bits - 1; i < bits; i--) {
+    if (!r_is_at_infinity) {
+      ec_GFp_mont_dbl(group, r, r);
+    }
+    if (i % 5 == 0) {
+      // Compute the next window value.
+      const size_t width = group->order.width;
+      uint8_t window = bn_is_bit_set_words(scalar->words, width, i + 4) << 4;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 3) << 3;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 2) << 2;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 1) << 1;
+      window |= bn_is_bit_set_words(scalar->words, width, i);
+
+      // Select the entry in constant-time.
+      EC_RAW_POINT tmp;
+      OPENSSL_memset(&tmp, 0, sizeof(EC_RAW_POINT));
+      for (size_t j = 0; j < OPENSSL_ARRAY_SIZE(precomp); j++) {
+        BN_ULONG mask = constant_time_eq_w(j, window);
+        ec_felem_select(group, &tmp.X, mask, &precomp[j].X, &tmp.X);
+        ec_felem_select(group, &tmp.Y, mask, &precomp[j].Y, &tmp.Y);
+        ec_felem_select(group, &tmp.Z, mask, &precomp[j].Z, &tmp.Z);
+      }
+
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+  }
+  if (r_is_at_infinity) {
+    ec_GFp_simple_point_set_to_infinity(group, r);
+  }
+}
+
+void ec_GFp_mont_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                          const EC_SCALAR *scalar) {
+  ec_GFp_mont_mul(group, r, &group->generator->raw, scalar);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c.grpc_back
new file mode 100644
index 0000000..4ed6c48
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/simple_mul.c.grpc_back	
@@ -0,0 +1,84 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ec.h>
+
+#include <assert.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+void ec_GFp_mont_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                     const EC_RAW_POINT *p, const EC_SCALAR *scalar) {
+  // This is a generic implementation for uncommon curves that not do not
+  // warrant a tuned one. It uses unsigned digits so that the doubling case in
+  // |ec_GFp_mont_add| is always unreachable, erring on safety and simplicity.
+
+  // Compute a table of the first 32 multiples of |p| (including infinity).
+  EC_RAW_POINT precomp[32];
+  ec_GFp_simple_point_set_to_infinity(group, &precomp[0]);
+  ec_GFp_simple_point_copy(&precomp[1], p);
+  for (size_t j = 2; j < OPENSSL_ARRAY_SIZE(precomp); j++) {
+    if (j & 1) {
+      ec_GFp_mont_add(group, &precomp[j], &precomp[1], &precomp[j - 1]);
+    } else {
+      ec_GFp_mont_dbl(group, &precomp[j], &precomp[j / 2]);
+    }
+  }
+
+  // Divide bits in |scalar| into windows.
+  unsigned bits = BN_num_bits(&group->order);
+  int r_is_at_infinity = 1;
+  for (unsigned i = bits - 1; i < bits; i--) {
+    if (!r_is_at_infinity) {
+      ec_GFp_mont_dbl(group, r, r);
+    }
+    if (i % 5 == 0) {
+      // Compute the next window value.
+      const size_t width = group->order.width;
+      uint8_t window = bn_is_bit_set_words(scalar->words, width, i + 4) << 4;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 3) << 3;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 2) << 2;
+      window |= bn_is_bit_set_words(scalar->words, width, i + 1) << 1;
+      window |= bn_is_bit_set_words(scalar->words, width, i);
+
+      // Select the entry in constant-time.
+      EC_RAW_POINT tmp;
+      OPENSSL_memset(&tmp, 0, sizeof(EC_RAW_POINT));
+      for (size_t j = 0; j < OPENSSL_ARRAY_SIZE(precomp); j++) {
+        BN_ULONG mask = constant_time_eq_w(j, window);
+        ec_felem_select(group, &tmp.X, mask, &precomp[j].X, &tmp.X);
+        ec_felem_select(group, &tmp.Y, mask, &precomp[j].Y, &tmp.Y);
+        ec_felem_select(group, &tmp.Z, mask, &precomp[j].Z, &tmp.Z);
+      }
+
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+  }
+  if (r_is_at_infinity) {
+    ec_GFp_simple_point_set_to_infinity(group, r);
+  }
+}
+
+void ec_GFp_mont_mul_base(const EC_GROUP *group, EC_RAW_POINT *r,
+                          const EC_SCALAR *scalar) {
+  ec_GFp_mont_mul(group, r, &group->generator->raw, scalar);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c
new file mode 100644
index 0000000..47e6482
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c	
@@ -0,0 +1,255 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/ec.h>
+
+#include "internal.h"
+
+
+// This function looks at 5+1 scalar bits (5 current, 1 adjacent less
+// significant bit), and recodes them into a signed digit for use in fast point
+// multiplication: the use of signed rather than unsigned digits means that
+// fewer points need to be precomputed, given that point inversion is easy (a
+// precomputed point dP makes -dP available as well).
+//
+// BACKGROUND:
+//
+// Signed digits for multiplication were introduced by Booth ("A signed binary
+// multiplication technique", Quart. Journ. Mech. and Applied Math., vol. IV,
+// pt. 2 (1951), pp. 236-240), in that case for multiplication of integers.
+// Booth's original encoding did not generally improve the density of nonzero
+// digits over the binary representation, and was merely meant to simplify the
+// handling of signed factors given in two's complement; but it has since been
+// shown to be the basis of various signed-digit representations that do have
+// further advantages, including the wNAF, using the following general
+// approach:
+//
+// (1) Given a binary representation
+//
+//       b_k  ...  b_2  b_1  b_0,
+//
+//     of a nonnegative integer (b_k in {0, 1}), rewrite it in digits 0, 1, -1
+//     by using bit-wise subtraction as follows:
+//
+//        b_k     b_(k-1)  ...  b_2  b_1  b_0
+//      -         b_k      ...  b_3  b_2  b_1  b_0
+//       -----------------------------------------
+//        s_(k+1) s_k      ...  s_3  s_2  s_1  s_0
+//
+//     A left-shift followed by subtraction of the original value yields a new
+//     representation of the same value, using signed bits s_i = b_(i-1) - b_i.
+//     This representation from Booth's paper has since appeared in the
+//     literature under a variety of different names including "reversed binary
+//     form", "alternating greedy expansion", "mutual opposite form", and
+//     "sign-alternating {+-1}-representation".
+//
+//     An interesting property is that among the nonzero bits, values 1 and -1
+//     strictly alternate.
+//
+// (2) Various window schemes can be applied to the Booth representation of
+//     integers: for example, right-to-left sliding windows yield the wNAF
+//     (a signed-digit encoding independently discovered by various researchers
+//     in the 1990s), and left-to-right sliding windows yield a left-to-right
+//     equivalent of the wNAF (independently discovered by various researchers
+//     around 2004).
+//
+// To prevent leaking information through side channels in point multiplication,
+// we need to recode the given integer into a regular pattern: sliding windows
+// as in wNAFs won't do, we need their fixed-window equivalent -- which is a few
+// decades older: we'll be using the so-called "modified Booth encoding" due to
+// MacSorley ("High-speed arithmetic in binary computers", Proc. IRE, vol. 49
+// (1961), pp. 67-91), in a radix-2^5 setting.  That is, we always combine five
+// signed bits into a signed digit:
+//
+//       s_(5j + 4) s_(5j + 3) s_(5j + 2) s_(5j + 1) s_(5j)
+//
+// The sign-alternating property implies that the resulting digit values are
+// integers from -16 to 16.
+//
+// Of course, we don't actually need to compute the signed digits s_i as an
+// intermediate step (that's just a nice way to see how this scheme relates
+// to the wNAF): a direct computation obtains the recoded digit from the
+// six bits b_(5j + 4) ... b_(5j - 1).
+//
+// This function takes those six bits as an integer (0 .. 63), writing the
+// recoded digit to *sign (0 for positive, 1 for negative) and *digit (absolute
+// value, in the range 0 .. 16).  Note that this integer essentially provides
+// the input bits "shifted to the left" by one position: for example, the input
+// to compute the least significant recoded digit, given that there's no bit
+// b_-1, has to be b_4 b_3 b_2 b_1 b_0 0.
+//
+// DOUBLING CASE:
+//
+// Point addition formulas for short Weierstrass curves are often incomplete.
+// Edge cases such as P + P or P + ∞ must be handled separately. This
+// complicates constant-time requirements. P + ∞ cannot be avoided (any window
+// may be zero) and is handled with constant-time selects. P + P (where P is not
+// ∞) usually is not. Instead, windowing strategies are chosen to avoid this
+// case. Whether this happens depends on the group order.
+//
+// Let w be the window width (in this function, w = 5). The non-trivial doubling
+// case in single-point scalar multiplication may occur if and only if the
+// 2^(w-1) bit of the group order is zero.
+//
+// Note the above only holds if the scalar is fully reduced and the group order
+// is a prime that is much larger than 2^w. It also only holds when windows
+// are applied from most significant to least significant, doubling between each
+// window. It does not apply to more complex table strategies such as
+// |EC_GFp_nistz256_method|.
+//
+// PROOF:
+//
+// Let n be the group order. Let l be the number of bits needed to represent n.
+// Assume there exists some 0 <= k < n such that signed w-bit windowed
+// multiplication hits the doubling case.
+//
+// Windowed multiplication consists of iterating over groups of s_i (defined
+// above based on k's binary representation) from most to least significant. At
+// iteration i (for i = ..., 3w, 2w, w, 0, starting from the most significant
+// window), we:
+//
+//  1. Double the accumulator A, w times. Let A_i be the value of A at this
+//     point.
+//
+//  2. Set A to T_i + A_i, where T_i is a precomputed multiple of P
+//     corresponding to the window s_(i+w-1) ... s_i.
+//
+// Let j be the index such that A_j = T_j ≠ ∞. Looking at A_i and T_i as
+// multiples of P, define a_i and t_i to be scalar coefficients of A_i and T_i.
+// Thus a_j = t_j ≠ 0 (mod n). Note a_i and t_i may not be reduced mod n. t_i is
+// the value of the w signed bits s_(i+w-1) ... s_i. a_i is computed as a_i =
+// 2^w * (a_(i+w) + t_(i+w)).
+//
+// t_i is bounded by -2^(w-1) <= t_i <= 2^(w-1). Additionally, we may write it
+// in terms of unsigned bits b_i. t_i consists of signed bits s_(i+w-1) ... s_i.
+// This is computed as:
+//
+//         b_(i+w-2) b_(i+w-3)  ...  b_i      b_(i-1)
+//      -  b_(i+w-1) b_(i+w-2)  ...  b_(i+1)  b_i
+//       --------------------------------------------
+//   t_i = s_(i+w-1) s_(i+w-2)  ...  s_(i+1)  s_i
+//
+// Observe that b_(i+w-2) through b_i occur in both terms. Let x be the integer
+// represented by that bit string, i.e. 2^(w-2)*b_(i+w-2) + ... + b_i.
+//
+//   t_i = (2*x + b_(i-1)) - (2^(w-1)*b_(i+w-1) + x)
+//       = x - 2^(w-1)*b_(i+w-1) + b_(i-1)
+//
+// Or, using C notation for bit operations:
+//
+//   t_i = (k>>i) & ((1<<(w-1)) - 1) - (k>>i) & (1<<(w-1)) + (k>>(i-1)) & 1
+//
+// Note b_(i-1) is added in left-shifted by one (or doubled) from its place.
+// This is compensated by t_(i-w)'s subtraction term. Thus, a_i may be computed
+// by adding b_l b_(l-1) ... b_(i+1) b_i and an extra copy of b_(i-1). In C
+// notation, this is:
+//
+//   a_i = (k>>(i+w)) << w + ((k>>(i+w-1)) & 1) << w
+//
+// Observe that, while t_i may be positive or negative, a_i is bounded by
+// 0 <= a_i < n + 2^w. Additionally, a_i can only be zero if b_(i+w-1) and up
+// are all zero. (Note this implies a non-trivial P + (-P) is unreachable for
+// all groups. That would imply the subsequent a_i is zero, which means all
+// terms thus far were zero.)
+//
+// Returning to our doubling position, we have a_j = t_j (mod n). We now
+// determine the value of a_j - t_j, which must be divisible by n. Our bounds on
+// a_j and t_j imply a_j - t_j is 0 or n. If it is 0, a_j = t_j. However, 2^w
+// divides a_j and -2^(w-1) <= t_j <= 2^(w-1), so this can only happen if
+// a_j = t_j = 0, which is a trivial doubling. Therefore, a_j - t_j = n.
+//
+// Now we determine j. Suppose j > 0. w divides j, so j >= w. Then,
+//
+//   n = a_j - t_j = (k>>(j+w)) << w + ((k>>(j+w-1)) & 1) << w - t_j
+//                <= k/2^j + 2^w - t_j
+//                 < n/2^w + 2^w + 2^(w-1)
+//
+// n is much larger than 2^w, so this is impossible. Thus, j = 0: only the final
+// addition may hit the doubling case.
+//
+// Finally, we consider bit patterns for n and k. Divide k into k_H + k_M + k_L
+// such that k_H is the contribution from b_(l-1) .. b_w, k_M is the
+// contribution from b_(w-1), and k_L is the contribution from b_(w-2) ... b_0.
+// That is:
+//
+// - 2^w divides k_H
+// - k_M is 0 or 2^(w-1)
+// - 0 <= k_L < 2^(w-1)
+//
+// Divide n into n_H + n_M + n_L similarly. We thus have:
+//
+//   t_0 = (k>>0) & ((1<<(w-1)) - 1) - (k>>0) & (1<<(w-1)) + (k>>(0-1)) & 1
+//       = k & ((1<<(w-1)) - 1) - k & (1<<(w-1))
+//       = k_L - k_M
+//
+//   a_0 = (k>>(0+w)) << w + ((k>>(0+w-1)) & 1) << w
+//       = (k>>w) << w + ((k>>(w-1)) & 1) << w
+//       = k_H + 2*k_M
+//
+//                 n = a_0 - t_0
+//   n_H + n_M + n_L = (k_H + 2*k_M) - (k_L - k_M)
+//                   = k_H + 3*k_M - k_L
+//
+// k_H - k_L < k and k < n, so k_H - k_L ≠ n. Therefore k_M is not 0 and must be
+// 2^(w-1). Now we consider k_H and n_H. We know k_H <= n_H. Suppose k_H = n_H.
+// Then,
+//
+//   n_M + n_L = 3*(2^(w-1)) - k_L
+//             > 3*(2^(w-1)) - 2^(w-1)
+//             = 2^w
+//
+// Contradiction (n_M + n_L is the bottom w bits of n). Thus k_H < n_H. Suppose
+// k_H < n_H - 2*2^w. Then,
+//
+//   n_H + n_M + n_L = k_H + 3*(2^(w-1)) - k_L
+//                   < n_H - 2*2^w + 3*(2^(w-1)) - k_L
+//         n_M + n_L < -2^(w-1) - k_L
+//
+// Contradiction. Thus, k_H = n_H - 2^w. (Note 2^w divides n_H and k_H.) Thus,
+//
+//   n_H + n_M + n_L = k_H + 3*(2^(w-1)) - k_L
+//                   = n_H - 2^w + 3*(2^(w-1)) - k_L
+//         n_M + n_L = 2^(w-1) - k_L
+//                  <= 2^(w-1)
+//
+// Equality would mean 2^(w-1) divides n, which is impossible if n is prime.
+// Thus n_M + n_L < 2^(w-1), so n_M is zero, proving our condition.
+//
+// This proof constructs k, so, to show the converse, let k_H = n_H - 2^w,
+// k_M = 2^(w-1), k_L = 2^(w-1) - n_L. This will result in a non-trivial point
+// doubling in the final addition and is the only such scalar.
+//
+// COMMON CURVES:
+//
+// The group orders for common curves end in the following bit patterns:
+//
+//   P-521: ...00001001; w = 4 is okay
+//   P-384: ...01110011; w = 2, 5, 6, 7 are okay
+//   P-256: ...01010001; w = 5, 7 are okay
+//   P-224: ...00111101; w = 3, 4, 5, 6 are okay
+void ec_GFp_nistp_recode_scalar_bits(uint8_t *sign, uint8_t *digit,
+                                     uint8_t in) {
+  uint8_t s, d;
+
+  s = ~((in >> 5) - 1); /* sets all bits to MSB(in), 'in' seen as
+                          * 6-bit value */
+  d = (1 << 6) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  *sign = s & 1;
+  *digit = d;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c.grpc_back
new file mode 100644
index 0000000..4f39f18
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/util.c.grpc_back	
@@ -0,0 +1,255 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/base.h>
+
+#include <openssl/ec.h>
+
+#include "internal.h"
+
+
+// This function looks at 5+1 scalar bits (5 current, 1 adjacent less
+// significant bit), and recodes them into a signed digit for use in fast point
+// multiplication: the use of signed rather than unsigned digits means that
+// fewer points need to be precomputed, given that point inversion is easy (a
+// precomputed point dP makes -dP available as well).
+//
+// BACKGROUND:
+//
+// Signed digits for multiplication were introduced by Booth ("A signed binary
+// multiplication technique", Quart. Journ. Mech. and Applied Math., vol. IV,
+// pt. 2 (1951), pp. 236-240), in that case for multiplication of integers.
+// Booth's original encoding did not generally improve the density of nonzero
+// digits over the binary representation, and was merely meant to simplify the
+// handling of signed factors given in two's complement; but it has since been
+// shown to be the basis of various signed-digit representations that do have
+// further advantages, including the wNAF, using the following general
+// approach:
+//
+// (1) Given a binary representation
+//
+//       b_k  ...  b_2  b_1  b_0,
+//
+//     of a nonnegative integer (b_k in {0, 1}), rewrite it in digits 0, 1, -1
+//     by using bit-wise subtraction as follows:
+//
+//        b_k     b_(k-1)  ...  b_2  b_1  b_0
+//      -         b_k      ...  b_3  b_2  b_1  b_0
+//       -----------------------------------------
+//        s_(k+1) s_k      ...  s_3  s_2  s_1  s_0
+//
+//     A left-shift followed by subtraction of the original value yields a new
+//     representation of the same value, using signed bits s_i = b_(i-1) - b_i.
+//     This representation from Booth's paper has since appeared in the
+//     literature under a variety of different names including "reversed binary
+//     form", "alternating greedy expansion", "mutual opposite form", and
+//     "sign-alternating {+-1}-representation".
+//
+//     An interesting property is that among the nonzero bits, values 1 and -1
+//     strictly alternate.
+//
+// (2) Various window schemes can be applied to the Booth representation of
+//     integers: for example, right-to-left sliding windows yield the wNAF
+//     (a signed-digit encoding independently discovered by various researchers
+//     in the 1990s), and left-to-right sliding windows yield a left-to-right
+//     equivalent of the wNAF (independently discovered by various researchers
+//     around 2004).
+//
+// To prevent leaking information through side channels in point multiplication,
+// we need to recode the given integer into a regular pattern: sliding windows
+// as in wNAFs won't do, we need their fixed-window equivalent -- which is a few
+// decades older: we'll be using the so-called "modified Booth encoding" due to
+// MacSorley ("High-speed arithmetic in binary computers", Proc. IRE, vol. 49
+// (1961), pp. 67-91), in a radix-2^5 setting.  That is, we always combine five
+// signed bits into a signed digit:
+//
+//       s_(5j + 4) s_(5j + 3) s_(5j + 2) s_(5j + 1) s_(5j)
+//
+// The sign-alternating property implies that the resulting digit values are
+// integers from -16 to 16.
+//
+// Of course, we don't actually need to compute the signed digits s_i as an
+// intermediate step (that's just a nice way to see how this scheme relates
+// to the wNAF): a direct computation obtains the recoded digit from the
+// six bits b_(5j + 4) ... b_(5j - 1).
+//
+// This function takes those six bits as an integer (0 .. 63), writing the
+// recoded digit to *sign (0 for positive, 1 for negative) and *digit (absolute
+// value, in the range 0 .. 16).  Note that this integer essentially provides
+// the input bits "shifted to the left" by one position: for example, the input
+// to compute the least significant recoded digit, given that there's no bit
+// b_-1, has to be b_4 b_3 b_2 b_1 b_0 0.
+//
+// DOUBLING CASE:
+//
+// Point addition formulas for short Weierstrass curves are often incomplete.
+// Edge cases such as P + P or P + ∞ must be handled separately. This
+// complicates constant-time requirements. P + ∞ cannot be avoided (any window
+// may be zero) and is handled with constant-time selects. P + P (where P is not
+// ∞) usually is not. Instead, windowing strategies are chosen to avoid this
+// case. Whether this happens depends on the group order.
+//
+// Let w be the window width (in this function, w = 5). The non-trivial doubling
+// case in single-point scalar multiplication may occur if and only if the
+// 2^(w-1) bit of the group order is zero.
+//
+// Note the above only holds if the scalar is fully reduced and the group order
+// is a prime that is much larger than 2^w. It also only holds when windows
+// are applied from most significant to least significant, doubling between each
+// window. It does not apply to more complex table strategies such as
+// |EC_GFp_nistz256_method|.
+//
+// PROOF:
+//
+// Let n be the group order. Let l be the number of bits needed to represent n.
+// Assume there exists some 0 <= k < n such that signed w-bit windowed
+// multiplication hits the doubling case.
+//
+// Windowed multiplication consists of iterating over groups of s_i (defined
+// above based on k's binary representation) from most to least significant. At
+// iteration i (for i = ..., 3w, 2w, w, 0, starting from the most significant
+// window), we:
+//
+//  1. Double the accumulator A, w times. Let A_i be the value of A at this
+//     point.
+//
+//  2. Set A to T_i + A_i, where T_i is a precomputed multiple of P
+//     corresponding to the window s_(i+w-1) ... s_i.
+//
+// Let j be the index such that A_j = T_j ≠ ∞. Looking at A_i and T_i as
+// multiples of P, define a_i and t_i to be scalar coefficients of A_i and T_i.
+// Thus a_j = t_j ≠ 0 (mod n). Note a_i and t_i may not be reduced mod n. t_i is
+// the value of the w signed bits s_(i+w-1) ... s_i. a_i is computed as a_i =
+// 2^w * (a_(i+w) + t_(i+w)).
+//
+// t_i is bounded by -2^(w-1) <= t_i <= 2^(w-1). Additionally, we may write it
+// in terms of unsigned bits b_i. t_i consists of signed bits s_(i+w-1) ... s_i.
+// This is computed as:
+//
+//         b_(i+w-2) b_(i+w-3)  ...  b_i      b_(i-1)
+//      -  b_(i+w-1) b_(i+w-2)  ...  b_(i+1)  b_i
+//       --------------------------------------------
+//   t_i = s_(i+w-1) s_(i+w-2)  ...  s_(i+1)  s_i
+//
+// Observe that b_(i+w-2) through b_i occur in both terms. Let x be the integer
+// represented by that bit string, i.e. 2^(w-2)*b_(i+w-2) + ... + b_i.
+//
+//   t_i = (2*x + b_(i-1)) - (2^(w-1)*b_(i+w-1) + x)
+//       = x - 2^(w-1)*b_(i+w-1) + b_(i-1)
+//
+// Or, using C notation for bit operations:
+//
+//   t_i = (k>>i) & ((1<<(w-1)) - 1) - (k>>i) & (1<<(w-1)) + (k>>(i-1)) & 1
+//
+// Note b_(i-1) is added in left-shifted by one (or doubled) from its place.
+// This is compensated by t_(i-w)'s subtraction term. Thus, a_i may be computed
+// by adding b_l b_(l-1) ... b_(i+1) b_i and an extra copy of b_(i-1). In C
+// notation, this is:
+//
+//   a_i = (k>>(i+w)) << w + ((k>>(i+w-1)) & 1) << w
+//
+// Observe that, while t_i may be positive or negative, a_i is bounded by
+// 0 <= a_i < n + 2^w. Additionally, a_i can only be zero if b_(i+w-1) and up
+// are all zero. (Note this implies a non-trivial P + (-P) is unreachable for
+// all groups. That would imply the subsequent a_i is zero, which means all
+// terms thus far were zero.)
+//
+// Returning to our doubling position, we have a_j = t_j (mod n). We now
+// determine the value of a_j - t_j, which must be divisible by n. Our bounds on
+// a_j and t_j imply a_j - t_j is 0 or n. If it is 0, a_j = t_j. However, 2^w
+// divides a_j and -2^(w-1) <= t_j <= 2^(w-1), so this can only happen if
+// a_j = t_j = 0, which is a trivial doubling. Therefore, a_j - t_j = n.
+//
+// Now we determine j. Suppose j > 0. w divides j, so j >= w. Then,
+//
+//   n = a_j - t_j = (k>>(j+w)) << w + ((k>>(j+w-1)) & 1) << w - t_j
+//                <= k/2^j + 2^w - t_j
+//                 < n/2^w + 2^w + 2^(w-1)
+//
+// n is much larger than 2^w, so this is impossible. Thus, j = 0: only the final
+// addition may hit the doubling case.
+//
+// Finally, we consider bit patterns for n and k. Divide k into k_H + k_M + k_L
+// such that k_H is the contribution from b_(l-1) .. b_w, k_M is the
+// contribution from b_(w-1), and k_L is the contribution from b_(w-2) ... b_0.
+// That is:
+//
+// - 2^w divides k_H
+// - k_M is 0 or 2^(w-1)
+// - 0 <= k_L < 2^(w-1)
+//
+// Divide n into n_H + n_M + n_L similarly. We thus have:
+//
+//   t_0 = (k>>0) & ((1<<(w-1)) - 1) - (k>>0) & (1<<(w-1)) + (k>>(0-1)) & 1
+//       = k & ((1<<(w-1)) - 1) - k & (1<<(w-1))
+//       = k_L - k_M
+//
+//   a_0 = (k>>(0+w)) << w + ((k>>(0+w-1)) & 1) << w
+//       = (k>>w) << w + ((k>>(w-1)) & 1) << w
+//       = k_H + 2*k_M
+//
+//                 n = a_0 - t_0
+//   n_H + n_M + n_L = (k_H + 2*k_M) - (k_L - k_M)
+//                   = k_H + 3*k_M - k_L
+//
+// k_H - k_L < k and k < n, so k_H - k_L ≠ n. Therefore k_M is not 0 and must be
+// 2^(w-1). Now we consider k_H and n_H. We know k_H <= n_H. Suppose k_H = n_H.
+// Then,
+//
+//   n_M + n_L = 3*(2^(w-1)) - k_L
+//             > 3*(2^(w-1)) - 2^(w-1)
+//             = 2^w
+//
+// Contradiction (n_M + n_L is the bottom w bits of n). Thus k_H < n_H. Suppose
+// k_H < n_H - 2*2^w. Then,
+//
+//   n_H + n_M + n_L = k_H + 3*(2^(w-1)) - k_L
+//                   < n_H - 2*2^w + 3*(2^(w-1)) - k_L
+//         n_M + n_L < -2^(w-1) - k_L
+//
+// Contradiction. Thus, k_H = n_H - 2^w. (Note 2^w divides n_H and k_H.) Thus,
+//
+//   n_H + n_M + n_L = k_H + 3*(2^(w-1)) - k_L
+//                   = n_H - 2^w + 3*(2^(w-1)) - k_L
+//         n_M + n_L = 2^(w-1) - k_L
+//                  <= 2^(w-1)
+//
+// Equality would mean 2^(w-1) divides n, which is impossible if n is prime.
+// Thus n_M + n_L < 2^(w-1), so n_M is zero, proving our condition.
+//
+// This proof constructs k, so, to show the converse, let k_H = n_H - 2^w,
+// k_M = 2^(w-1), k_L = 2^(w-1) - n_L. This will result in a non-trivial point
+// doubling in the final addition and is the only such scalar.
+//
+// COMMON CURVES:
+//
+// The group orders for common curves end in the following bit patterns:
+//
+//   P-521: ...00001001; w = 4 is okay
+//   P-384: ...01110011; w = 2, 5, 6, 7 are okay
+//   P-256: ...01010001; w = 5, 7 are okay
+//   P-224: ...00111101; w = 3, 4, 5, 6 are okay
+void ec_GFp_nistp_recode_scalar_bits(uint8_t *sign, uint8_t *digit,
+                                     uint8_t in) {
+  uint8_t s, d;
+
+  s = ~((in >> 5) - 1); /* sets all bits to MSB(in), 'in' seen as
+                          * 6-bit value */
+  d = (1 << 6) - in - 1;
+  d = (d & s) | (in & ~s);
+  d = (d >> 1) + (d & 1);
+
+  *sign = s & 1;
+  *digit = d;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c
new file mode 100644
index 0000000..a0de817
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c	
@@ -0,0 +1,227 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl_grpc/ec.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/thread.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+// This file implements the wNAF-based interleaving multi-exponentiation method
+// at:
+//   http://link.springer.com/chapter/10.1007%2F3-540-45537-X_13
+//   http://www.bmoeller.de/pdf/TI-01-08.multiexp.pdf
+
+void ec_compute_wNAF(const EC_GROUP *group, int8_t *out,
+                     const EC_SCALAR *scalar, size_t bits, int w) {
+  // 'int8_t' can represent integers with absolute values less than 2^7.
+  assert(0 < w && w <= 7);
+  assert(bits != 0);
+  int bit = 1 << w;         // 2^w, at most 128
+  int next_bit = bit << 1;  // 2^(w+1), at most 256
+  int mask = next_bit - 1;  // at most 255
+
+  int window_val = scalar->words[0] & mask;
+  for (size_t j = 0; j < bits + 1; j++) {
+    assert(0 <= window_val && window_val <= next_bit);
+    int digit = 0;
+    if (window_val & 1) {
+      assert(0 < window_val && window_val < next_bit);
+      if (window_val & bit) {
+        digit = window_val - next_bit;
+        // We know -next_bit < digit < 0 and window_val - digit = next_bit.
+
+        // modified wNAF
+        if (j + w + 1 >= bits) {
+          // special case for generating modified wNAFs:
+          // no new bits will be added into window_val,
+          // so using a positive digit here will decrease
+          // the total length of the representation
+
+          digit = window_val & (mask >> 1);
+          // We know 0 < digit < bit and window_val - digit = bit.
+        }
+      } else {
+        digit = window_val;
+        // We know 0 < digit < bit and window_val - digit = 0.
+      }
+
+      window_val -= digit;
+
+      // Now window_val is 0 or 2^(w+1) in standard wNAF generation.
+      // For modified window NAFs, it may also be 2^w.
+      //
+      // See the comments above for the derivation of each of these bounds.
+      assert(window_val == 0 || window_val == next_bit || window_val == bit);
+      assert(-bit < digit && digit < bit);
+
+      // window_val was odd, so digit is also odd.
+      assert(digit & 1);
+    }
+
+    out[j] = digit;
+
+    // Incorporate the next bit. Previously, |window_val| <= |next_bit|, so if
+    // we shift and add at most one copy of |bit|, this will continue to hold
+    // afterwards.
+    window_val >>= 1;
+    window_val +=
+        bit * bn_is_bit_set_words(scalar->words, group->order.width, j + w + 1);
+    assert(window_val <= next_bit);
+  }
+
+  // bits + 1 entries should be sufficient to consume all bits.
+  assert(window_val == 0);
+}
+
+// compute_precomp sets |out[i]| to (2*i+1)*p, for i from 0 to |len|.
+static void compute_precomp(const EC_GROUP *group, EC_RAW_POINT *out,
+                            const EC_RAW_POINT *p, size_t len) {
+  ec_GFp_simple_point_copy(&out[0], p);
+  EC_RAW_POINT two_p;
+  ec_GFp_mont_dbl(group, &two_p, p);
+  for (size_t i = 1; i < len; i++) {
+    ec_GFp_mont_add(group, &out[i], &out[i - 1], &two_p);
+  }
+}
+
+static void lookup_precomp(const EC_GROUP *group, EC_RAW_POINT *out,
+                           const EC_RAW_POINT *precomp, int digit) {
+  if (digit < 0) {
+    digit = -digit;
+    ec_GFp_simple_point_copy(out, &precomp[digit >> 1]);
+    ec_GFp_simple_invert(group, out);
+  } else {
+    ec_GFp_simple_point_copy(out, &precomp[digit >> 1]);
+  }
+}
+
+// EC_WNAF_WINDOW_BITS is the window size to use for |ec_GFp_mont_mul_public|.
+#define EC_WNAF_WINDOW_BITS 4
+
+// EC_WNAF_TABLE_SIZE is the table size to use for |ec_GFp_mont_mul_public|.
+#define EC_WNAF_TABLE_SIZE (1 << (EC_WNAF_WINDOW_BITS - 1))
+
+void ec_GFp_mont_mul_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                            const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                            const EC_SCALAR *p_scalar) {
+  size_t bits = BN_num_bits(&group->order);
+  size_t wNAF_len = bits + 1;
+
+  int8_t g_wNAF[EC_MAX_BYTES * 8 + 1];
+  EC_RAW_POINT g_precomp[EC_WNAF_TABLE_SIZE];
+  assert(wNAF_len <= OPENSSL_ARRAY_SIZE(g_wNAF));
+  const EC_RAW_POINT *g = &group->generator->raw;
+  ec_compute_wNAF(group, g_wNAF, g_scalar, bits, EC_WNAF_WINDOW_BITS);
+  compute_precomp(group, g_precomp, g, EC_WNAF_TABLE_SIZE);
+
+  int8_t p_wNAF[EC_MAX_BYTES * 8 + 1];
+  EC_RAW_POINT p_precomp[EC_WNAF_TABLE_SIZE];
+  assert(wNAF_len <= OPENSSL_ARRAY_SIZE(p_wNAF));
+  ec_compute_wNAF(group, p_wNAF, p_scalar, bits, EC_WNAF_WINDOW_BITS);
+  compute_precomp(group, p_precomp, p, EC_WNAF_TABLE_SIZE);
+
+  EC_RAW_POINT tmp;
+  int r_is_at_infinity = 1;
+  for (size_t k = wNAF_len - 1; k < wNAF_len; k--) {
+    if (!r_is_at_infinity) {
+      ec_GFp_mont_dbl(group, r, r);
+    }
+
+    if (g_wNAF[k] != 0) {
+      lookup_precomp(group, &tmp, g_precomp, g_wNAF[k]);
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+
+    if (p_wNAF[k] != 0) {
+      lookup_precomp(group, &tmp, p_precomp, p_wNAF[k]);
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+  }
+
+  if (r_is_at_infinity) {
+    ec_GFp_simple_point_set_to_infinity(group, r);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c.grpc_back
new file mode 100644
index 0000000..fd1b480
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ec/wnaf.c.grpc_back	
@@ -0,0 +1,227 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#include <openssl/ec.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/thread.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+
+
+// This file implements the wNAF-based interleaving multi-exponentiation method
+// at:
+//   http://link.springer.com/chapter/10.1007%2F3-540-45537-X_13
+//   http://www.bmoeller.de/pdf/TI-01-08.multiexp.pdf
+
+void ec_compute_wNAF(const EC_GROUP *group, int8_t *out,
+                     const EC_SCALAR *scalar, size_t bits, int w) {
+  // 'int8_t' can represent integers with absolute values less than 2^7.
+  assert(0 < w && w <= 7);
+  assert(bits != 0);
+  int bit = 1 << w;         // 2^w, at most 128
+  int next_bit = bit << 1;  // 2^(w+1), at most 256
+  int mask = next_bit - 1;  // at most 255
+
+  int window_val = scalar->words[0] & mask;
+  for (size_t j = 0; j < bits + 1; j++) {
+    assert(0 <= window_val && window_val <= next_bit);
+    int digit = 0;
+    if (window_val & 1) {
+      assert(0 < window_val && window_val < next_bit);
+      if (window_val & bit) {
+        digit = window_val - next_bit;
+        // We know -next_bit < digit < 0 and window_val - digit = next_bit.
+
+        // modified wNAF
+        if (j + w + 1 >= bits) {
+          // special case for generating modified wNAFs:
+          // no new bits will be added into window_val,
+          // so using a positive digit here will decrease
+          // the total length of the representation
+
+          digit = window_val & (mask >> 1);
+          // We know 0 < digit < bit and window_val - digit = bit.
+        }
+      } else {
+        digit = window_val;
+        // We know 0 < digit < bit and window_val - digit = 0.
+      }
+
+      window_val -= digit;
+
+      // Now window_val is 0 or 2^(w+1) in standard wNAF generation.
+      // For modified window NAFs, it may also be 2^w.
+      //
+      // See the comments above for the derivation of each of these bounds.
+      assert(window_val == 0 || window_val == next_bit || window_val == bit);
+      assert(-bit < digit && digit < bit);
+
+      // window_val was odd, so digit is also odd.
+      assert(digit & 1);
+    }
+
+    out[j] = digit;
+
+    // Incorporate the next bit. Previously, |window_val| <= |next_bit|, so if
+    // we shift and add at most one copy of |bit|, this will continue to hold
+    // afterwards.
+    window_val >>= 1;
+    window_val +=
+        bit * bn_is_bit_set_words(scalar->words, group->order.width, j + w + 1);
+    assert(window_val <= next_bit);
+  }
+
+  // bits + 1 entries should be sufficient to consume all bits.
+  assert(window_val == 0);
+}
+
+// compute_precomp sets |out[i]| to (2*i+1)*p, for i from 0 to |len|.
+static void compute_precomp(const EC_GROUP *group, EC_RAW_POINT *out,
+                            const EC_RAW_POINT *p, size_t len) {
+  ec_GFp_simple_point_copy(&out[0], p);
+  EC_RAW_POINT two_p;
+  ec_GFp_mont_dbl(group, &two_p, p);
+  for (size_t i = 1; i < len; i++) {
+    ec_GFp_mont_add(group, &out[i], &out[i - 1], &two_p);
+  }
+}
+
+static void lookup_precomp(const EC_GROUP *group, EC_RAW_POINT *out,
+                           const EC_RAW_POINT *precomp, int digit) {
+  if (digit < 0) {
+    digit = -digit;
+    ec_GFp_simple_point_copy(out, &precomp[digit >> 1]);
+    ec_GFp_simple_invert(group, out);
+  } else {
+    ec_GFp_simple_point_copy(out, &precomp[digit >> 1]);
+  }
+}
+
+// EC_WNAF_WINDOW_BITS is the window size to use for |ec_GFp_mont_mul_public|.
+#define EC_WNAF_WINDOW_BITS 4
+
+// EC_WNAF_TABLE_SIZE is the table size to use for |ec_GFp_mont_mul_public|.
+#define EC_WNAF_TABLE_SIZE (1 << (EC_WNAF_WINDOW_BITS - 1))
+
+void ec_GFp_mont_mul_public(const EC_GROUP *group, EC_RAW_POINT *r,
+                            const EC_SCALAR *g_scalar, const EC_RAW_POINT *p,
+                            const EC_SCALAR *p_scalar) {
+  size_t bits = BN_num_bits(&group->order);
+  size_t wNAF_len = bits + 1;
+
+  int8_t g_wNAF[EC_MAX_BYTES * 8 + 1];
+  EC_RAW_POINT g_precomp[EC_WNAF_TABLE_SIZE];
+  assert(wNAF_len <= OPENSSL_ARRAY_SIZE(g_wNAF));
+  const EC_RAW_POINT *g = &group->generator->raw;
+  ec_compute_wNAF(group, g_wNAF, g_scalar, bits, EC_WNAF_WINDOW_BITS);
+  compute_precomp(group, g_precomp, g, EC_WNAF_TABLE_SIZE);
+
+  int8_t p_wNAF[EC_MAX_BYTES * 8 + 1];
+  EC_RAW_POINT p_precomp[EC_WNAF_TABLE_SIZE];
+  assert(wNAF_len <= OPENSSL_ARRAY_SIZE(p_wNAF));
+  ec_compute_wNAF(group, p_wNAF, p_scalar, bits, EC_WNAF_WINDOW_BITS);
+  compute_precomp(group, p_precomp, p, EC_WNAF_TABLE_SIZE);
+
+  EC_RAW_POINT tmp;
+  int r_is_at_infinity = 1;
+  for (size_t k = wNAF_len - 1; k < wNAF_len; k--) {
+    if (!r_is_at_infinity) {
+      ec_GFp_mont_dbl(group, r, r);
+    }
+
+    if (g_wNAF[k] != 0) {
+      lookup_precomp(group, &tmp, g_precomp, g_wNAF[k]);
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+
+    if (p_wNAF[k] != 0) {
+      lookup_precomp(group, &tmp, p_precomp, p_wNAF[k]);
+      if (r_is_at_infinity) {
+        ec_GFp_simple_point_copy(r, &tmp);
+        r_is_at_infinity = 0;
+      } else {
+        ec_GFp_mont_add(group, r, r, &tmp);
+      }
+    }
+  }
+
+  if (r_is_at_infinity) {
+    ec_GFp_simple_point_set_to_infinity(group, r);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c
new file mode 100644
index 0000000..c7f3408
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c	
@@ -0,0 +1,122 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ecdh.h>
+
+#include <string.h>
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+
+#include "../ec/internal.h"
+
+
+int ECDH_compute_key_fips(uint8_t *out, size_t out_len, const EC_POINT *pub_key,
+                          const EC_KEY *priv_key) {
+  if (priv_key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_NO_PRIVATE_VALUE);
+    return 0;
+  }
+  const EC_SCALAR *const priv = &priv_key->priv_key->scalar;
+  const EC_GROUP *const group = EC_KEY_get0_group(priv_key);
+  if (EC_GROUP_cmp(group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  EC_RAW_POINT shared_point;
+  uint8_t buf[EC_MAX_BYTES];
+  size_t buflen;
+  if (!ec_point_mul_scalar(group, &shared_point, &pub_key->raw, priv) ||
+      !ec_point_get_affine_coordinate_bytes(group, buf, NULL, &buflen,
+                                            sizeof(buf), &shared_point)) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_POINT_ARITHMETIC_FAILURE);
+    return 0;
+  }
+
+  switch (out_len) {
+    case SHA224_DIGEST_LENGTH:
+      SHA224(buf, buflen, out);
+      break;
+    case SHA256_DIGEST_LENGTH:
+      SHA256(buf, buflen, out);
+      break;
+    case SHA384_DIGEST_LENGTH:
+      SHA384(buf, buflen, out);
+      break;
+    case SHA512_DIGEST_LENGTH:
+      SHA512(buf, buflen, out);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(ECDH, ECDH_R_UNKNOWN_DIGEST_LENGTH);
+      return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c.grpc_back
new file mode 100644
index 0000000..a7b2f08
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdh/ecdh.c.grpc_back	
@@ -0,0 +1,122 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ecdh.h>
+
+#include <string.h>
+
+#include <openssl/ec.h>
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+
+#include "../ec/internal.h"
+
+
+int ECDH_compute_key_fips(uint8_t *out, size_t out_len, const EC_POINT *pub_key,
+                          const EC_KEY *priv_key) {
+  if (priv_key->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_NO_PRIVATE_VALUE);
+    return 0;
+  }
+  const EC_SCALAR *const priv = &priv_key->priv_key->scalar;
+  const EC_GROUP *const group = EC_KEY_get0_group(priv_key);
+  if (EC_GROUP_cmp(group, pub_key->group, NULL) != 0) {
+    OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
+    return 0;
+  }
+
+  EC_RAW_POINT shared_point;
+  uint8_t buf[EC_MAX_BYTES];
+  size_t buflen;
+  if (!ec_point_mul_scalar(group, &shared_point, &pub_key->raw, priv) ||
+      !ec_point_get_affine_coordinate_bytes(group, buf, NULL, &buflen,
+                                            sizeof(buf), &shared_point)) {
+    OPENSSL_PUT_ERROR(ECDH, ECDH_R_POINT_ARITHMETIC_FAILURE);
+    return 0;
+  }
+
+  switch (out_len) {
+    case SHA224_DIGEST_LENGTH:
+      SHA224(buf, buflen, out);
+      break;
+    case SHA256_DIGEST_LENGTH:
+      SHA256(buf, buflen, out);
+      break;
+    case SHA384_DIGEST_LENGTH:
+      SHA384(buf, buflen, out);
+      break;
+    case SHA512_DIGEST_LENGTH:
+      SHA512(buf, buflen, out);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(ECDH, ECDH_R_UNKNOWN_DIGEST_LENGTH);
+      return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c
new file mode 100644
index 0000000..92ebade
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c	
@@ -0,0 +1,313 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ecdsa.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/type_check.h>
+
+#include "../bn/internal.h"
+#include "../ec/internal.h"
+#include "../../internal.h"
+
+
+// digest_to_scalar interprets |digest_len| bytes from |digest| as a scalar for
+// ECDSA. Note this value is not fully reduced modulo the order, only the
+// correct number of bits.
+static void digest_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t *digest, size_t digest_len) {
+  const BIGNUM *order = &group->order;
+  size_t num_bits = BN_num_bits(order);
+  // Need to truncate digest if it is too long: first truncate whole bytes.
+  size_t num_bytes = (num_bits + 7) / 8;
+  if (digest_len > num_bytes) {
+    digest_len = num_bytes;
+  }
+  OPENSSL_memset(out, 0, sizeof(EC_SCALAR));
+  for (size_t i = 0; i < digest_len; i++) {
+    out->bytes[i] = digest[digest_len - 1 - i];
+  }
+
+  // If it is still too long, truncate remaining bits with a shift.
+  if (8 * digest_len > num_bits) {
+    bn_rshift_words(out->words, out->words, 8 - (num_bits & 0x7), order->width);
+  }
+
+  // |out| now has the same bit width as |order|, but this only bounds by
+  // 2*|order|. Subtract the order if out of range.
+  //
+  // Montgomery multiplication accepts the looser bounds, so this isn't strictly
+  // necessary, but it is a cleaner abstraction and has no performance impact.
+  BN_ULONG tmp[EC_MAX_WORDS];
+  bn_reduce_once_in_place(out->words, 0 /* no carry */, order->d, tmp,
+                          order->width);
+}
+
+ECDSA_SIG *ECDSA_SIG_new(void) {
+  ECDSA_SIG *sig = OPENSSL_malloc(sizeof(ECDSA_SIG));
+  if (sig == NULL) {
+    return NULL;
+  }
+  sig->r = BN_new();
+  sig->s = BN_new();
+  if (sig->r == NULL || sig->s == NULL) {
+    ECDSA_SIG_free(sig);
+    return NULL;
+  }
+  return sig;
+}
+
+void ECDSA_SIG_free(ECDSA_SIG *sig) {
+  if (sig == NULL) {
+    return;
+  }
+
+  BN_free(sig->r);
+  BN_free(sig->s);
+  OPENSSL_free(sig);
+}
+
+void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
+                    const BIGNUM **out_s) {
+  if (out_r != NULL) {
+    *out_r = sig->r;
+  }
+  if (out_s != NULL) {
+    *out_s = sig->s;
+  }
+}
+
+int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) {
+  if (r == NULL || s == NULL) {
+    return 0;
+  }
+  BN_free(sig->r);
+  BN_free(sig->s);
+  sig->r = r;
+  sig->s = s;
+  return 1;
+}
+
+int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
+                    const ECDSA_SIG *sig, const EC_KEY *eckey) {
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  const EC_POINT *pub_key = EC_KEY_get0_public_key(eckey);
+  if (group == NULL || pub_key == NULL || sig == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  EC_SCALAR r, s, u1, u2, s_inv_mont, m;
+  if (BN_is_zero(sig->r) ||
+      !ec_bignum_to_scalar(group, &r, sig->r) ||
+      BN_is_zero(sig->s) ||
+      !ec_bignum_to_scalar(group, &s, sig->s)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    return 0;
+  }
+
+  // s_inv_mont = s^-1 in the Montgomery domain. This is
+  ec_scalar_inv_montgomery_vartime(group, &s_inv_mont, &s);
+
+  // u1 = m * s^-1 mod order
+  // u2 = r * s^-1 mod order
+  //
+  // |s_inv_mont| is in Montgomery form while |m| and |r| are not, so |u1| and
+  // |u2| will be taken out of Montgomery form, as desired.
+  digest_to_scalar(group, &m, digest, digest_len);
+  ec_scalar_mul_montgomery(group, &u1, &m, &s_inv_mont);
+  ec_scalar_mul_montgomery(group, &u2, &r, &s_inv_mont);
+
+  EC_RAW_POINT point;
+  if (!ec_point_mul_scalar_public(group, &point, &u1, &pub_key->raw, &u2)) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_EC_LIB);
+    return 0;
+  }
+
+  if (!ec_cmp_x_coordinate(group, &point, &r)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ecdsa_sign_setup(const EC_KEY *eckey, EC_SCALAR *out_kinv_mont,
+                            EC_SCALAR *out_r, const uint8_t *digest,
+                            size_t digest_len, const EC_SCALAR *priv_key) {
+  // Check that the size of the group order is FIPS compliant (FIPS 186-4
+  // B.5.2).
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  const BIGNUM *order = EC_GROUP_get0_order(group);
+  if (BN_num_bits(order) < 160) {
+    OPENSSL_PUT_ERROR(ECDSA, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  int ret = 0;
+  EC_SCALAR k;
+  EC_RAW_POINT tmp_point;
+  do {
+    // Include the private key and message digest in the k generation.
+    if (eckey->fixed_k != NULL) {
+      if (!ec_bignum_to_scalar(group, &k, eckey->fixed_k)) {
+        goto err;
+      }
+    } else {
+      // Pass a SHA512 hash of the private key and digest as additional data
+      // into the RBG. This is a hardening measure against entropy failure.
+      OPENSSL_STATIC_ASSERT(SHA512_DIGEST_LENGTH >= 32,
+                            "additional_data is too large for SHA-512");
+      SHA512_CTX sha;
+      uint8_t additional_data[SHA512_DIGEST_LENGTH];
+      SHA512_Init(&sha);
+      SHA512_Update(&sha, priv_key->words, order->width * sizeof(BN_ULONG));
+      SHA512_Update(&sha, digest, digest_len);
+      SHA512_Final(additional_data, &sha);
+      if (!ec_random_nonzero_scalar(group, &k, additional_data)) {
+        goto err;
+      }
+    }
+
+    // Compute k^-1 in the Montgomery domain. This is |ec_scalar_to_montgomery|
+    // followed by |ec_scalar_inv_montgomery|, but |ec_scalar_inv_montgomery|
+    // followed by |ec_scalar_from_montgomery| is equivalent and slightly more
+    // efficient.
+    ec_scalar_inv_montgomery(group, out_kinv_mont, &k);
+    ec_scalar_from_montgomery(group, out_kinv_mont, out_kinv_mont);
+
+    // Compute r, the x-coordinate of generator * k.
+    if (!ec_point_mul_scalar_base(group, &tmp_point, &k) ||
+        !ec_get_x_coordinate_as_scalar(group, out_r, &tmp_point)) {
+      goto err;
+    }
+  } while (ec_scalar_is_zero(group, out_r));
+
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(&k, sizeof(k));
+  return ret;
+}
+
+ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest, size_t digest_len,
+                         const EC_KEY *eckey) {
+  if (eckey->ecdsa_meth && eckey->ecdsa_meth->sign) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_NOT_IMPLEMENTED);
+    return NULL;
+  }
+
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  if (group == NULL || eckey->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+  const BIGNUM *order = EC_GROUP_get0_order(group);
+  const EC_SCALAR *priv_key = &eckey->priv_key->scalar;
+
+  int ok = 0;
+  ECDSA_SIG *ret = ECDSA_SIG_new();
+  EC_SCALAR kinv_mont, r_mont, s, m, tmp;
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  digest_to_scalar(group, &m, digest, digest_len);
+  for (;;) {
+    if (!ecdsa_sign_setup(eckey, &kinv_mont, &r_mont, digest, digest_len,
+                          priv_key) ||
+        !bn_set_words(ret->r, r_mont.words, order->width)) {
+      goto err;
+    }
+
+    // Compute priv_key * r (mod order). Note if only one parameter is in the
+    // Montgomery domain, |ec_scalar_mod_mul_montgomery| will compute the answer
+    // in the normal domain.
+    ec_scalar_to_montgomery(group, &r_mont, &r_mont);
+    ec_scalar_mul_montgomery(group, &s, priv_key, &r_mont);
+
+    // Compute tmp = m + priv_key * r.
+    ec_scalar_add(group, &tmp, &m, &s);
+
+    // Finally, multiply s by k^-1. That was retained in Montgomery form, so the
+    // same technique as the previous multiplication works.
+    ec_scalar_mul_montgomery(group, &s, &tmp, &kinv_mont);
+    if (!bn_set_words(ret->s, s.words, order->width)) {
+      goto err;
+    }
+    if (!BN_is_zero(ret->s)) {
+      // s != 0 => we have a valid signature
+      break;
+    }
+  }
+
+  ok = 1;
+
+err:
+  if (!ok) {
+    ECDSA_SIG_free(ret);
+    ret = NULL;
+  }
+  OPENSSL_cleanse(&kinv_mont, sizeof(kinv_mont));
+  OPENSSL_cleanse(&r_mont, sizeof(r_mont));
+  OPENSSL_cleanse(&s, sizeof(s));
+  OPENSSL_cleanse(&tmp, sizeof(tmp));
+  OPENSSL_cleanse(&m, sizeof(m));
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c.grpc_back
new file mode 100644
index 0000000..38771d5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/ecdsa/ecdsa.c.grpc_back	
@@ -0,0 +1,313 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ecdsa.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+#include <openssl/type_check.h>
+
+#include "../bn/internal.h"
+#include "../ec/internal.h"
+#include "../../internal.h"
+
+
+// digest_to_scalar interprets |digest_len| bytes from |digest| as a scalar for
+// ECDSA. Note this value is not fully reduced modulo the order, only the
+// correct number of bits.
+static void digest_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
+                             const uint8_t *digest, size_t digest_len) {
+  const BIGNUM *order = &group->order;
+  size_t num_bits = BN_num_bits(order);
+  // Need to truncate digest if it is too long: first truncate whole bytes.
+  size_t num_bytes = (num_bits + 7) / 8;
+  if (digest_len > num_bytes) {
+    digest_len = num_bytes;
+  }
+  OPENSSL_memset(out, 0, sizeof(EC_SCALAR));
+  for (size_t i = 0; i < digest_len; i++) {
+    out->bytes[i] = digest[digest_len - 1 - i];
+  }
+
+  // If it is still too long, truncate remaining bits with a shift.
+  if (8 * digest_len > num_bits) {
+    bn_rshift_words(out->words, out->words, 8 - (num_bits & 0x7), order->width);
+  }
+
+  // |out| now has the same bit width as |order|, but this only bounds by
+  // 2*|order|. Subtract the order if out of range.
+  //
+  // Montgomery multiplication accepts the looser bounds, so this isn't strictly
+  // necessary, but it is a cleaner abstraction and has no performance impact.
+  BN_ULONG tmp[EC_MAX_WORDS];
+  bn_reduce_once_in_place(out->words, 0 /* no carry */, order->d, tmp,
+                          order->width);
+}
+
+ECDSA_SIG *ECDSA_SIG_new(void) {
+  ECDSA_SIG *sig = OPENSSL_malloc(sizeof(ECDSA_SIG));
+  if (sig == NULL) {
+    return NULL;
+  }
+  sig->r = BN_new();
+  sig->s = BN_new();
+  if (sig->r == NULL || sig->s == NULL) {
+    ECDSA_SIG_free(sig);
+    return NULL;
+  }
+  return sig;
+}
+
+void ECDSA_SIG_free(ECDSA_SIG *sig) {
+  if (sig == NULL) {
+    return;
+  }
+
+  BN_free(sig->r);
+  BN_free(sig->s);
+  OPENSSL_free(sig);
+}
+
+void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
+                    const BIGNUM **out_s) {
+  if (out_r != NULL) {
+    *out_r = sig->r;
+  }
+  if (out_s != NULL) {
+    *out_s = sig->s;
+  }
+}
+
+int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) {
+  if (r == NULL || s == NULL) {
+    return 0;
+  }
+  BN_free(sig->r);
+  BN_free(sig->s);
+  sig->r = r;
+  sig->s = s;
+  return 1;
+}
+
+int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
+                    const ECDSA_SIG *sig, const EC_KEY *eckey) {
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  const EC_POINT *pub_key = EC_KEY_get0_public_key(eckey);
+  if (group == NULL || pub_key == NULL || sig == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  EC_SCALAR r, s, u1, u2, s_inv_mont, m;
+  if (BN_is_zero(sig->r) ||
+      !ec_bignum_to_scalar(group, &r, sig->r) ||
+      BN_is_zero(sig->s) ||
+      !ec_bignum_to_scalar(group, &s, sig->s)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    return 0;
+  }
+
+  // s_inv_mont = s^-1 in the Montgomery domain. This is
+  ec_scalar_inv_montgomery_vartime(group, &s_inv_mont, &s);
+
+  // u1 = m * s^-1 mod order
+  // u2 = r * s^-1 mod order
+  //
+  // |s_inv_mont| is in Montgomery form while |m| and |r| are not, so |u1| and
+  // |u2| will be taken out of Montgomery form, as desired.
+  digest_to_scalar(group, &m, digest, digest_len);
+  ec_scalar_mul_montgomery(group, &u1, &m, &s_inv_mont);
+  ec_scalar_mul_montgomery(group, &u2, &r, &s_inv_mont);
+
+  EC_RAW_POINT point;
+  if (!ec_point_mul_scalar_public(group, &point, &u1, &pub_key->raw, &u2)) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_EC_LIB);
+    return 0;
+  }
+
+  if (!ec_cmp_x_coordinate(group, &point, &r)) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_BAD_SIGNATURE);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ecdsa_sign_setup(const EC_KEY *eckey, EC_SCALAR *out_kinv_mont,
+                            EC_SCALAR *out_r, const uint8_t *digest,
+                            size_t digest_len, const EC_SCALAR *priv_key) {
+  // Check that the size of the group order is FIPS compliant (FIPS 186-4
+  // B.5.2).
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  const BIGNUM *order = EC_GROUP_get0_order(group);
+  if (BN_num_bits(order) < 160) {
+    OPENSSL_PUT_ERROR(ECDSA, EC_R_INVALID_GROUP_ORDER);
+    return 0;
+  }
+
+  int ret = 0;
+  EC_SCALAR k;
+  EC_RAW_POINT tmp_point;
+  do {
+    // Include the private key and message digest in the k generation.
+    if (eckey->fixed_k != NULL) {
+      if (!ec_bignum_to_scalar(group, &k, eckey->fixed_k)) {
+        goto err;
+      }
+    } else {
+      // Pass a SHA512 hash of the private key and digest as additional data
+      // into the RBG. This is a hardening measure against entropy failure.
+      OPENSSL_STATIC_ASSERT(SHA512_DIGEST_LENGTH >= 32,
+                            "additional_data is too large for SHA-512");
+      SHA512_CTX sha;
+      uint8_t additional_data[SHA512_DIGEST_LENGTH];
+      SHA512_Init(&sha);
+      SHA512_Update(&sha, priv_key->words, order->width * sizeof(BN_ULONG));
+      SHA512_Update(&sha, digest, digest_len);
+      SHA512_Final(additional_data, &sha);
+      if (!ec_random_nonzero_scalar(group, &k, additional_data)) {
+        goto err;
+      }
+    }
+
+    // Compute k^-1 in the Montgomery domain. This is |ec_scalar_to_montgomery|
+    // followed by |ec_scalar_inv_montgomery|, but |ec_scalar_inv_montgomery|
+    // followed by |ec_scalar_from_montgomery| is equivalent and slightly more
+    // efficient.
+    ec_scalar_inv_montgomery(group, out_kinv_mont, &k);
+    ec_scalar_from_montgomery(group, out_kinv_mont, out_kinv_mont);
+
+    // Compute r, the x-coordinate of generator * k.
+    if (!ec_point_mul_scalar_base(group, &tmp_point, &k) ||
+        !ec_get_x_coordinate_as_scalar(group, out_r, &tmp_point)) {
+      goto err;
+    }
+  } while (ec_scalar_is_zero(group, out_r));
+
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(&k, sizeof(k));
+  return ret;
+}
+
+ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest, size_t digest_len,
+                         const EC_KEY *eckey) {
+  if (eckey->ecdsa_meth && eckey->ecdsa_meth->sign) {
+    OPENSSL_PUT_ERROR(ECDSA, ECDSA_R_NOT_IMPLEMENTED);
+    return NULL;
+  }
+
+  const EC_GROUP *group = EC_KEY_get0_group(eckey);
+  if (group == NULL || eckey->priv_key == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_PASSED_NULL_PARAMETER);
+    return NULL;
+  }
+  const BIGNUM *order = EC_GROUP_get0_order(group);
+  const EC_SCALAR *priv_key = &eckey->priv_key->scalar;
+
+  int ok = 0;
+  ECDSA_SIG *ret = ECDSA_SIG_new();
+  EC_SCALAR kinv_mont, r_mont, s, m, tmp;
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(ECDSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  digest_to_scalar(group, &m, digest, digest_len);
+  for (;;) {
+    if (!ecdsa_sign_setup(eckey, &kinv_mont, &r_mont, digest, digest_len,
+                          priv_key) ||
+        !bn_set_words(ret->r, r_mont.words, order->width)) {
+      goto err;
+    }
+
+    // Compute priv_key * r (mod order). Note if only one parameter is in the
+    // Montgomery domain, |ec_scalar_mod_mul_montgomery| will compute the answer
+    // in the normal domain.
+    ec_scalar_to_montgomery(group, &r_mont, &r_mont);
+    ec_scalar_mul_montgomery(group, &s, priv_key, &r_mont);
+
+    // Compute tmp = m + priv_key * r.
+    ec_scalar_add(group, &tmp, &m, &s);
+
+    // Finally, multiply s by k^-1. That was retained in Montgomery form, so the
+    // same technique as the previous multiplication works.
+    ec_scalar_mul_montgomery(group, &s, &tmp, &kinv_mont);
+    if (!bn_set_words(ret->s, s.words, order->width)) {
+      goto err;
+    }
+    if (!BN_is_zero(ret->s)) {
+      // s != 0 => we have a valid signature
+      break;
+    }
+  }
+
+  ok = 1;
+
+err:
+  if (!ok) {
+    ECDSA_SIG_free(ret);
+    ret = NULL;
+  }
+  OPENSSL_cleanse(&kinv_mont, sizeof(kinv_mont));
+  OPENSSL_cleanse(&r_mont, sizeof(r_mont));
+  OPENSSL_cleanse(&s, sizeof(s));
+  OPENSSL_cleanse(&tmp, sizeof(tmp));
+  OPENSSL_cleanse(&m, sizeof(m));
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c
new file mode 100644
index 0000000..2a66a1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c	
@@ -0,0 +1,32 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdint.h>
+
+
+#if defined(BORINGSSL_FIPS) && defined(BORINGSSL_SHARED_LIBRARY)
+// BORINGSSL_bcm_text_hash is is default hash value for the FIPS integrity check
+// that must be replaced with the real value during the build process. This
+// value need only be distinct, i.e. so that we can safely search-and-replace it
+// in an object file.
+const uint8_t BORINGSSL_bcm_text_hash[64];
+const uint8_t BORINGSSL_bcm_text_hash[64] = {
+    0xae, 0x2c, 0xea, 0x2a, 0xbd, 0xa6, 0xf3, 0xec, 0x97, 0x7f, 0x9b,
+    0xf6, 0x94, 0x9a, 0xfc, 0x83, 0x68, 0x27, 0xcb, 0xa0, 0xa0, 0x9f,
+    0x6b, 0x6f, 0xde, 0x52, 0xcd, 0xe2, 0xcd, 0xff, 0x31, 0x80, 0xa2,
+    0xd4, 0xc3, 0x66, 0x0f, 0xc2, 0x6a, 0x7b, 0xf4, 0xbe, 0x39, 0xa2,
+    0xd7, 0x25, 0xdb, 0x21, 0x98, 0xe9, 0xd5, 0x53, 0xbf, 0x5c, 0x32,
+    0x06, 0x83, 0x34, 0x0c, 0x65, 0x89, 0x52, 0xbd, 0x1f,
+};
+#endif  // FIPS && SHARED_LIBRARY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c.grpc_back
new file mode 100644
index 0000000..2a66a1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/fips_shared_support.c.grpc_back	
@@ -0,0 +1,32 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdint.h>
+
+
+#if defined(BORINGSSL_FIPS) && defined(BORINGSSL_SHARED_LIBRARY)
+// BORINGSSL_bcm_text_hash is is default hash value for the FIPS integrity check
+// that must be replaced with the real value during the build process. This
+// value need only be distinct, i.e. so that we can safely search-and-replace it
+// in an object file.
+const uint8_t BORINGSSL_bcm_text_hash[64];
+const uint8_t BORINGSSL_bcm_text_hash[64] = {
+    0xae, 0x2c, 0xea, 0x2a, 0xbd, 0xa6, 0xf3, 0xec, 0x97, 0x7f, 0x9b,
+    0xf6, 0x94, 0x9a, 0xfc, 0x83, 0x68, 0x27, 0xcb, 0xa0, 0xa0, 0x9f,
+    0x6b, 0x6f, 0xde, 0x52, 0xcd, 0xe2, 0xcd, 0xff, 0x31, 0x80, 0xa2,
+    0xd4, 0xc3, 0x66, 0x0f, 0xc2, 0x6a, 0x7b, 0xf4, 0xbe, 0x39, 0xa2,
+    0xd7, 0x25, 0xdb, 0x21, 0x98, 0xe9, 0xd5, 0x53, 0xbf, 0x5c, 0x32,
+    0x06, 0x83, 0x34, 0x0c, 0x65, 0x89, 0x52, 0xbd, 0x1f,
+};
+#endif  // FIPS && SHARED_LIBRARY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c
new file mode 100644
index 0000000..7466f94
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c	
@@ -0,0 +1,228 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/hmac.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/mem.h>
+
+#include "../../internal.h"
+
+
+uint8_t *HMAC(const EVP_MD *evp_md, const void *key, size_t key_len,
+              const uint8_t *data, size_t data_len, uint8_t *out,
+              unsigned int *out_len) {
+  HMAC_CTX ctx;
+  HMAC_CTX_init(&ctx);
+  if (!HMAC_Init_ex(&ctx, key, key_len, evp_md, NULL) ||
+      !HMAC_Update(&ctx, data, data_len) ||
+      !HMAC_Final(&ctx, out, out_len)) {
+    out = NULL;
+  }
+
+  HMAC_CTX_cleanup(&ctx);
+  return out;
+}
+
+void HMAC_CTX_init(HMAC_CTX *ctx) {
+  ctx->md = NULL;
+  EVP_MD_CTX_init(&ctx->i_ctx);
+  EVP_MD_CTX_init(&ctx->o_ctx);
+  EVP_MD_CTX_init(&ctx->md_ctx);
+}
+
+HMAC_CTX *HMAC_CTX_new(void) {
+  HMAC_CTX *ctx = OPENSSL_malloc(sizeof(HMAC_CTX));
+  if (ctx != NULL) {
+    HMAC_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+void HMAC_CTX_cleanup(HMAC_CTX *ctx) {
+  EVP_MD_CTX_cleanup(&ctx->i_ctx);
+  EVP_MD_CTX_cleanup(&ctx->o_ctx);
+  EVP_MD_CTX_cleanup(&ctx->md_ctx);
+  OPENSSL_cleanse(ctx, sizeof(HMAC_CTX));
+}
+
+void HMAC_CTX_free(HMAC_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  HMAC_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+                 const EVP_MD *md, ENGINE *impl) {
+  if (md == NULL) {
+    md = ctx->md;
+  }
+
+  // If either |key| is non-NULL or |md| has changed, initialize with a new key
+  // rather than rewinding the previous one.
+  //
+  // TODO(davidben,eroman): Passing the previous |md| with a NULL |key| is
+  // ambiguous between using the empty key and reusing the previous key. There
+  // exist callers which intend the latter, but the former is an awkward edge
+  // case. Fix to API to avoid this.
+  if (md != ctx->md || key != NULL) {
+    uint8_t pad[EVP_MAX_MD_BLOCK_SIZE];
+    uint8_t key_block[EVP_MAX_MD_BLOCK_SIZE];
+    unsigned key_block_len;
+
+    size_t block_size = EVP_MD_block_size(md);
+    assert(block_size <= sizeof(key_block));
+    if (block_size < key_len) {
+      // Long keys are hashed.
+      if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl) ||
+          !EVP_DigestUpdate(&ctx->md_ctx, key, key_len) ||
+          !EVP_DigestFinal_ex(&ctx->md_ctx, key_block, &key_block_len)) {
+        return 0;
+      }
+    } else {
+      assert(key_len <= sizeof(key_block));
+      OPENSSL_memcpy(key_block, key, key_len);
+      key_block_len = (unsigned)key_len;
+    }
+    // Keys are then padded with zeros.
+    if (key_block_len != EVP_MAX_MD_BLOCK_SIZE) {
+      OPENSSL_memset(&key_block[key_block_len], 0, sizeof(key_block) - key_block_len);
+    }
+
+    for (size_t i = 0; i < EVP_MAX_MD_BLOCK_SIZE; i++) {
+      pad[i] = 0x36 ^ key_block[i];
+    }
+    if (!EVP_DigestInit_ex(&ctx->i_ctx, md, impl) ||
+        !EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md))) {
+      return 0;
+    }
+
+    for (size_t i = 0; i < EVP_MAX_MD_BLOCK_SIZE; i++) {
+      pad[i] = 0x5c ^ key_block[i];
+    }
+    if (!EVP_DigestInit_ex(&ctx->o_ctx, md, impl) ||
+        !EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md))) {
+      return 0;
+    }
+
+    ctx->md = md;
+  }
+
+  if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data, size_t data_len) {
+  return EVP_DigestUpdate(&ctx->md_ctx, data, data_len);
+}
+
+int HMAC_Final(HMAC_CTX *ctx, uint8_t *out, unsigned int *out_len) {
+  unsigned int i;
+  uint8_t buf[EVP_MAX_MD_SIZE];
+
+  // TODO(davidben): The only thing that can officially fail here is
+  // |EVP_MD_CTX_copy_ex|, but even that should be impossible in this case.
+  if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i) ||
+      !EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx) ||
+      !EVP_DigestUpdate(&ctx->md_ctx, buf, i) ||
+      !EVP_DigestFinal_ex(&ctx->md_ctx, out, out_len)) {
+    *out_len = 0;
+    return 0;
+  }
+
+  return 1;
+}
+
+size_t HMAC_size(const HMAC_CTX *ctx) {
+  return EVP_MD_size(ctx->md);
+}
+
+int HMAC_CTX_copy_ex(HMAC_CTX *dest, const HMAC_CTX *src) {
+  if (!EVP_MD_CTX_copy_ex(&dest->i_ctx, &src->i_ctx) ||
+      !EVP_MD_CTX_copy_ex(&dest->o_ctx, &src->o_ctx) ||
+      !EVP_MD_CTX_copy_ex(&dest->md_ctx, &src->md_ctx)) {
+    return 0;
+  }
+
+  dest->md = src->md;
+  return 1;
+}
+
+void HMAC_CTX_reset(HMAC_CTX *ctx) {
+  HMAC_CTX_cleanup(ctx);
+  HMAC_CTX_init(ctx);
+}
+
+int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md) {
+  if (key && md) {
+    HMAC_CTX_init(ctx);
+  }
+  return HMAC_Init_ex(ctx, key, key_len, md, NULL);
+}
+
+int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src) {
+  HMAC_CTX_init(dest);
+  return HMAC_CTX_copy_ex(dest, src);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c.grpc_back
new file mode 100644
index 0000000..fb57bf2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/hmac/hmac.c.grpc_back	
@@ -0,0 +1,228 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/hmac.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/mem.h>
+
+#include "../../internal.h"
+
+
+uint8_t *HMAC(const EVP_MD *evp_md, const void *key, size_t key_len,
+              const uint8_t *data, size_t data_len, uint8_t *out,
+              unsigned int *out_len) {
+  HMAC_CTX ctx;
+  HMAC_CTX_init(&ctx);
+  if (!HMAC_Init_ex(&ctx, key, key_len, evp_md, NULL) ||
+      !HMAC_Update(&ctx, data, data_len) ||
+      !HMAC_Final(&ctx, out, out_len)) {
+    out = NULL;
+  }
+
+  HMAC_CTX_cleanup(&ctx);
+  return out;
+}
+
+void HMAC_CTX_init(HMAC_CTX *ctx) {
+  ctx->md = NULL;
+  EVP_MD_CTX_init(&ctx->i_ctx);
+  EVP_MD_CTX_init(&ctx->o_ctx);
+  EVP_MD_CTX_init(&ctx->md_ctx);
+}
+
+HMAC_CTX *HMAC_CTX_new(void) {
+  HMAC_CTX *ctx = OPENSSL_malloc(sizeof(HMAC_CTX));
+  if (ctx != NULL) {
+    HMAC_CTX_init(ctx);
+  }
+  return ctx;
+}
+
+void HMAC_CTX_cleanup(HMAC_CTX *ctx) {
+  EVP_MD_CTX_cleanup(&ctx->i_ctx);
+  EVP_MD_CTX_cleanup(&ctx->o_ctx);
+  EVP_MD_CTX_cleanup(&ctx->md_ctx);
+  OPENSSL_cleanse(ctx, sizeof(HMAC_CTX));
+}
+
+void HMAC_CTX_free(HMAC_CTX *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+
+  HMAC_CTX_cleanup(ctx);
+  OPENSSL_free(ctx);
+}
+
+int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+                 const EVP_MD *md, ENGINE *impl) {
+  if (md == NULL) {
+    md = ctx->md;
+  }
+
+  // If either |key| is non-NULL or |md| has changed, initialize with a new key
+  // rather than rewinding the previous one.
+  //
+  // TODO(davidben,eroman): Passing the previous |md| with a NULL |key| is
+  // ambiguous between using the empty key and reusing the previous key. There
+  // exist callers which intend the latter, but the former is an awkward edge
+  // case. Fix to API to avoid this.
+  if (md != ctx->md || key != NULL) {
+    uint8_t pad[EVP_MAX_MD_BLOCK_SIZE];
+    uint8_t key_block[EVP_MAX_MD_BLOCK_SIZE];
+    unsigned key_block_len;
+
+    size_t block_size = EVP_MD_block_size(md);
+    assert(block_size <= sizeof(key_block));
+    if (block_size < key_len) {
+      // Long keys are hashed.
+      if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl) ||
+          !EVP_DigestUpdate(&ctx->md_ctx, key, key_len) ||
+          !EVP_DigestFinal_ex(&ctx->md_ctx, key_block, &key_block_len)) {
+        return 0;
+      }
+    } else {
+      assert(key_len <= sizeof(key_block));
+      OPENSSL_memcpy(key_block, key, key_len);
+      key_block_len = (unsigned)key_len;
+    }
+    // Keys are then padded with zeros.
+    if (key_block_len != EVP_MAX_MD_BLOCK_SIZE) {
+      OPENSSL_memset(&key_block[key_block_len], 0, sizeof(key_block) - key_block_len);
+    }
+
+    for (size_t i = 0; i < EVP_MAX_MD_BLOCK_SIZE; i++) {
+      pad[i] = 0x36 ^ key_block[i];
+    }
+    if (!EVP_DigestInit_ex(&ctx->i_ctx, md, impl) ||
+        !EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md))) {
+      return 0;
+    }
+
+    for (size_t i = 0; i < EVP_MAX_MD_BLOCK_SIZE; i++) {
+      pad[i] = 0x5c ^ key_block[i];
+    }
+    if (!EVP_DigestInit_ex(&ctx->o_ctx, md, impl) ||
+        !EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md))) {
+      return 0;
+    }
+
+    ctx->md = md;
+  }
+
+  if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data, size_t data_len) {
+  return EVP_DigestUpdate(&ctx->md_ctx, data, data_len);
+}
+
+int HMAC_Final(HMAC_CTX *ctx, uint8_t *out, unsigned int *out_len) {
+  unsigned int i;
+  uint8_t buf[EVP_MAX_MD_SIZE];
+
+  // TODO(davidben): The only thing that can officially fail here is
+  // |EVP_MD_CTX_copy_ex|, but even that should be impossible in this case.
+  if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i) ||
+      !EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx) ||
+      !EVP_DigestUpdate(&ctx->md_ctx, buf, i) ||
+      !EVP_DigestFinal_ex(&ctx->md_ctx, out, out_len)) {
+    *out_len = 0;
+    return 0;
+  }
+
+  return 1;
+}
+
+size_t HMAC_size(const HMAC_CTX *ctx) {
+  return EVP_MD_size(ctx->md);
+}
+
+int HMAC_CTX_copy_ex(HMAC_CTX *dest, const HMAC_CTX *src) {
+  if (!EVP_MD_CTX_copy_ex(&dest->i_ctx, &src->i_ctx) ||
+      !EVP_MD_CTX_copy_ex(&dest->o_ctx, &src->o_ctx) ||
+      !EVP_MD_CTX_copy_ex(&dest->md_ctx, &src->md_ctx)) {
+    return 0;
+  }
+
+  dest->md = src->md;
+  return 1;
+}
+
+void HMAC_CTX_reset(HMAC_CTX *ctx) {
+  HMAC_CTX_cleanup(ctx);
+  HMAC_CTX_init(ctx);
+}
+
+int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md) {
+  if (key && md) {
+    HMAC_CTX_init(ctx);
+  }
+  return HMAC_Init_ex(ctx, key, key_len, md, NULL);
+}
+
+int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src) {
+  HMAC_CTX_init(dest);
+  return HMAC_CTX_copy_ex(dest, src);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c
new file mode 100644
index 0000000..aae87c5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c	
@@ -0,0 +1,29 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/crypto.h>
+
+
+// This file exists in order to give the fipsmodule target, in non-FIPS mode,
+// something to compile.
+
+int FIPS_mode(void) {
+#if defined(BORINGSSL_FIPS) && !defined(OPENSSL_ASAN)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+int FIPS_mode_set(int on) { return on == FIPS_mode(); }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c.grpc_back
new file mode 100644
index 0000000..2f8e408
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/is_fips.c.grpc_back	
@@ -0,0 +1,29 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/crypto.h>
+
+
+// This file exists in order to give the fipsmodule target, in non-FIPS mode,
+// something to compile.
+
+int FIPS_mode(void) {
+#if defined(BORINGSSL_FIPS) && !defined(OPENSSL_ASAN)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+int FIPS_mode_set(int on) { return on == FIPS_mode(); }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c
new file mode 100644
index 0000000..6bff52f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c	
@@ -0,0 +1,256 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/md4.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+
+uint8_t *MD4(const uint8_t *data, size_t len, uint8_t out[MD4_DIGEST_LENGTH]) {
+  MD4_CTX ctx;
+  MD4_Init(&ctx);
+  MD4_Update(&ctx, data, len);
+  MD4_Final(out, &ctx);
+
+  return out;
+}
+
+// Implemented from RFC1186 The MD4 Message-Digest Algorithm.
+
+int MD4_Init(MD4_CTX *md4) {
+  OPENSSL_memset(md4, 0, sizeof(MD4_CTX));
+  md4->h[0] = 0x67452301UL;
+  md4->h[1] = 0xefcdab89UL;
+  md4->h[2] = 0x98badcfeUL;
+  md4->h[3] = 0x10325476UL;
+  return 1;
+}
+
+void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
+
+#define DATA_ORDER_IS_LITTLE_ENDIAN
+
+#define HASH_CTX MD4_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 16
+#define HASH_UPDATE MD4_Update
+#define HASH_TRANSFORM MD4_Transform
+#define HASH_FINAL MD4_Final
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+#define HASH_BLOCK_DATA_ORDER md4_block_data_order
+
+#include "../digest/md32_common.h"
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
+// simplified to the code below.  Wei attributes these optimizations
+// to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
+#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define G(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
+#define H(b, c, d) ((b) ^ (c) ^ (d))
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+#define R0(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + F((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+#define R1(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + G((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+#define R2(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + H((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num) {
+  uint32_t A, B, C, D, l;
+  uint32_t X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+
+  for (; num--;) {
+    HOST_c2l(data, l);
+    X0 = l;
+    HOST_c2l(data, l);
+    X1 = l;
+    // Round 0
+    R0(A, B, C, D, X0, 3, 0);
+    HOST_c2l(data, l);
+    X2 = l;
+    R0(D, A, B, C, X1, 7, 0);
+    HOST_c2l(data, l);
+    X3 = l;
+    R0(C, D, A, B, X2, 11, 0);
+    HOST_c2l(data, l);
+    X4 = l;
+    R0(B, C, D, A, X3, 19, 0);
+    HOST_c2l(data, l);
+    X5 = l;
+    R0(A, B, C, D, X4, 3, 0);
+    HOST_c2l(data, l);
+    X6 = l;
+    R0(D, A, B, C, X5, 7, 0);
+    HOST_c2l(data, l);
+    X7 = l;
+    R0(C, D, A, B, X6, 11, 0);
+    HOST_c2l(data, l);
+    X8 = l;
+    R0(B, C, D, A, X7, 19, 0);
+    HOST_c2l(data, l);
+    X9 = l;
+    R0(A, B, C, D, X8, 3, 0);
+    HOST_c2l(data, l);
+    X10 = l;
+    R0(D, A, B, C, X9, 7, 0);
+    HOST_c2l(data, l);
+    X11 = l;
+    R0(C, D, A, B, X10, 11, 0);
+    HOST_c2l(data, l);
+    X12 = l;
+    R0(B, C, D, A, X11, 19, 0);
+    HOST_c2l(data, l);
+    X13 = l;
+    R0(A, B, C, D, X12, 3, 0);
+    HOST_c2l(data, l);
+    X14 = l;
+    R0(D, A, B, C, X13, 7, 0);
+    HOST_c2l(data, l);
+    X15 = l;
+    R0(C, D, A, B, X14, 11, 0);
+    R0(B, C, D, A, X15, 19, 0);
+    // Round 1
+    R1(A, B, C, D, X0, 3, 0x5A827999L);
+    R1(D, A, B, C, X4, 5, 0x5A827999L);
+    R1(C, D, A, B, X8, 9, 0x5A827999L);
+    R1(B, C, D, A, X12, 13, 0x5A827999L);
+    R1(A, B, C, D, X1, 3, 0x5A827999L);
+    R1(D, A, B, C, X5, 5, 0x5A827999L);
+    R1(C, D, A, B, X9, 9, 0x5A827999L);
+    R1(B, C, D, A, X13, 13, 0x5A827999L);
+    R1(A, B, C, D, X2, 3, 0x5A827999L);
+    R1(D, A, B, C, X6, 5, 0x5A827999L);
+    R1(C, D, A, B, X10, 9, 0x5A827999L);
+    R1(B, C, D, A, X14, 13, 0x5A827999L);
+    R1(A, B, C, D, X3, 3, 0x5A827999L);
+    R1(D, A, B, C, X7, 5, 0x5A827999L);
+    R1(C, D, A, B, X11, 9, 0x5A827999L);
+    R1(B, C, D, A, X15, 13, 0x5A827999L);
+    // Round 2
+    R2(A, B, C, D, X0, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X8, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X4, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X12, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X2, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X10, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X6, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X14, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X1, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X9, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X5, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X13, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X3, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X11, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X7, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X15, 15, 0x6ED9EBA1L);
+
+    A = state[0] += A;
+    B = state[1] += B;
+    C = state[2] += C;
+    D = state[3] += D;
+  }
+}
+
+#undef DATA_ORDER_IS_LITTLE_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_MAKE_STRING
+#undef HASH_BLOCK_DATA_ORDER
+#undef F
+#undef G
+#undef H
+#undef ROTATE
+#undef R0
+#undef R1
+#undef R2
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c.grpc_back
new file mode 100644
index 0000000..cc2a631
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md4/md4.c.grpc_back	
@@ -0,0 +1,256 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/md4.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+
+uint8_t *MD4(const uint8_t *data, size_t len, uint8_t out[MD4_DIGEST_LENGTH]) {
+  MD4_CTX ctx;
+  MD4_Init(&ctx);
+  MD4_Update(&ctx, data, len);
+  MD4_Final(out, &ctx);
+
+  return out;
+}
+
+// Implemented from RFC1186 The MD4 Message-Digest Algorithm.
+
+int MD4_Init(MD4_CTX *md4) {
+  OPENSSL_memset(md4, 0, sizeof(MD4_CTX));
+  md4->h[0] = 0x67452301UL;
+  md4->h[1] = 0xefcdab89UL;
+  md4->h[2] = 0x98badcfeUL;
+  md4->h[3] = 0x10325476UL;
+  return 1;
+}
+
+void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
+
+#define DATA_ORDER_IS_LITTLE_ENDIAN
+
+#define HASH_CTX MD4_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 16
+#define HASH_UPDATE MD4_Update
+#define HASH_TRANSFORM MD4_Transform
+#define HASH_FINAL MD4_Final
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+#define HASH_BLOCK_DATA_ORDER md4_block_data_order
+
+#include "../digest/md32_common.h"
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
+// simplified to the code below.  Wei attributes these optimizations
+// to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
+#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define G(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
+#define H(b, c, d) ((b) ^ (c) ^ (d))
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+#define R0(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + F((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+#define R1(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + G((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+#define R2(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + H((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+  } while (0)
+
+void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num) {
+  uint32_t A, B, C, D, l;
+  uint32_t X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+
+  for (; num--;) {
+    HOST_c2l(data, l);
+    X0 = l;
+    HOST_c2l(data, l);
+    X1 = l;
+    // Round 0
+    R0(A, B, C, D, X0, 3, 0);
+    HOST_c2l(data, l);
+    X2 = l;
+    R0(D, A, B, C, X1, 7, 0);
+    HOST_c2l(data, l);
+    X3 = l;
+    R0(C, D, A, B, X2, 11, 0);
+    HOST_c2l(data, l);
+    X4 = l;
+    R0(B, C, D, A, X3, 19, 0);
+    HOST_c2l(data, l);
+    X5 = l;
+    R0(A, B, C, D, X4, 3, 0);
+    HOST_c2l(data, l);
+    X6 = l;
+    R0(D, A, B, C, X5, 7, 0);
+    HOST_c2l(data, l);
+    X7 = l;
+    R0(C, D, A, B, X6, 11, 0);
+    HOST_c2l(data, l);
+    X8 = l;
+    R0(B, C, D, A, X7, 19, 0);
+    HOST_c2l(data, l);
+    X9 = l;
+    R0(A, B, C, D, X8, 3, 0);
+    HOST_c2l(data, l);
+    X10 = l;
+    R0(D, A, B, C, X9, 7, 0);
+    HOST_c2l(data, l);
+    X11 = l;
+    R0(C, D, A, B, X10, 11, 0);
+    HOST_c2l(data, l);
+    X12 = l;
+    R0(B, C, D, A, X11, 19, 0);
+    HOST_c2l(data, l);
+    X13 = l;
+    R0(A, B, C, D, X12, 3, 0);
+    HOST_c2l(data, l);
+    X14 = l;
+    R0(D, A, B, C, X13, 7, 0);
+    HOST_c2l(data, l);
+    X15 = l;
+    R0(C, D, A, B, X14, 11, 0);
+    R0(B, C, D, A, X15, 19, 0);
+    // Round 1
+    R1(A, B, C, D, X0, 3, 0x5A827999L);
+    R1(D, A, B, C, X4, 5, 0x5A827999L);
+    R1(C, D, A, B, X8, 9, 0x5A827999L);
+    R1(B, C, D, A, X12, 13, 0x5A827999L);
+    R1(A, B, C, D, X1, 3, 0x5A827999L);
+    R1(D, A, B, C, X5, 5, 0x5A827999L);
+    R1(C, D, A, B, X9, 9, 0x5A827999L);
+    R1(B, C, D, A, X13, 13, 0x5A827999L);
+    R1(A, B, C, D, X2, 3, 0x5A827999L);
+    R1(D, A, B, C, X6, 5, 0x5A827999L);
+    R1(C, D, A, B, X10, 9, 0x5A827999L);
+    R1(B, C, D, A, X14, 13, 0x5A827999L);
+    R1(A, B, C, D, X3, 3, 0x5A827999L);
+    R1(D, A, B, C, X7, 5, 0x5A827999L);
+    R1(C, D, A, B, X11, 9, 0x5A827999L);
+    R1(B, C, D, A, X15, 13, 0x5A827999L);
+    // Round 2
+    R2(A, B, C, D, X0, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X8, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X4, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X12, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X2, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X10, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X6, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X14, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X1, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X9, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X5, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X13, 15, 0x6ED9EBA1L);
+    R2(A, B, C, D, X3, 3, 0x6ED9EBA1L);
+    R2(D, A, B, C, X11, 9, 0x6ED9EBA1L);
+    R2(C, D, A, B, X7, 11, 0x6ED9EBA1L);
+    R2(B, C, D, A, X15, 15, 0x6ED9EBA1L);
+
+    A = state[0] += A;
+    B = state[1] += B;
+    C = state[2] += C;
+    D = state[3] += D;
+  }
+}
+
+#undef DATA_ORDER_IS_LITTLE_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_MAKE_STRING
+#undef HASH_BLOCK_DATA_ORDER
+#undef F
+#undef G
+#undef H
+#undef ROTATE
+#undef R0
+#undef R1
+#undef R2
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h
new file mode 100644
index 0000000..d5a3d4a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h	
@@ -0,0 +1,37 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_MD5_INTERNAL_H
+#define OPENSSL_HEADER_MD5_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM) && \
+    (defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
+#define MD5_ASM
+extern void md5_block_asm_data_order(uint32_t *state, const uint8_t *data,
+                                     size_t num);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_MD5_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h.grpc_back
new file mode 100644
index 0000000..9ee9f13
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/internal.h.grpc_back	
@@ -0,0 +1,37 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_MD5_INTERNAL_H
+#define OPENSSL_HEADER_MD5_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_NO_ASM) && \
+    (defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
+#define MD5_ASM
+extern void md5_block_asm_data_order(uint32_t *state, const uint8_t *data,
+                                     size_t num);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_MD5_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c
new file mode 100644
index 0000000..e4ca5f3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c	
@@ -0,0 +1,301 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/md5.h>
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+uint8_t *MD5(const uint8_t *data, size_t len, uint8_t out[MD5_DIGEST_LENGTH]) {
+  MD5_CTX ctx;
+  MD5_Init(&ctx);
+  MD5_Update(&ctx, data, len);
+  MD5_Final(out, &ctx);
+
+  return out;
+}
+
+int MD5_Init(MD5_CTX *md5) {
+  OPENSSL_memset(md5, 0, sizeof(MD5_CTX));
+  md5->h[0] = 0x67452301UL;
+  md5->h[1] = 0xefcdab89UL;
+  md5->h[2] = 0x98badcfeUL;
+  md5->h[3] = 0x10325476UL;
+  return 1;
+}
+
+#if defined(MD5_ASM)
+#define md5_block_data_order md5_block_asm_data_order
+#else
+static void md5_block_data_order(uint32_t *state, const uint8_t *data,
+                                 size_t num);
+#endif
+
+
+#define DATA_ORDER_IS_LITTLE_ENDIAN
+
+#define HASH_CTX MD5_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 16
+#define HASH_UPDATE MD5_Update
+#define HASH_TRANSFORM MD5_Transform
+#define HASH_FINAL MD5_Final
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+#define HASH_BLOCK_DATA_ORDER md5_block_data_order
+
+#include "../digest/md32_common.h"
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
+// simplified to the code below.  Wei attributes these optimizations
+// to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
+#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define G(b, c, d) ((((b) ^ (c)) & (d)) ^ (c))
+#define H(b, c, d) ((b) ^ (c) ^ (d))
+#define I(b, c, d) (((~(d)) | (b)) ^ (c))
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+#define R0(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + F((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R1(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + G((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R2(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + H((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R3(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + I((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#ifndef MD5_ASM
+#ifdef X
+#undef X
+#endif
+static void md5_block_data_order(uint32_t *state, const uint8_t *data,
+                                 size_t num) {
+  uint32_t A, B, C, D, l;
+  uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10, XX11, XX12,
+      XX13, XX14, XX15;
+#define X(i) XX##i
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+
+  for (; num--;) {
+    HOST_c2l(data, l);
+    X(0) = l;
+    HOST_c2l(data, l);
+    X(1) = l;
+    // Round 0
+    R0(A, B, C, D, X(0), 7, 0xd76aa478L);
+    HOST_c2l(data, l);
+    X(2) = l;
+    R0(D, A, B, C, X(1), 12, 0xe8c7b756L);
+    HOST_c2l(data, l);
+    X(3) = l;
+    R0(C, D, A, B, X(2), 17, 0x242070dbL);
+    HOST_c2l(data, l);
+    X(4) = l;
+    R0(B, C, D, A, X(3), 22, 0xc1bdceeeL);
+    HOST_c2l(data, l);
+    X(5) = l;
+    R0(A, B, C, D, X(4), 7, 0xf57c0fafL);
+    HOST_c2l(data, l);
+    X(6) = l;
+    R0(D, A, B, C, X(5), 12, 0x4787c62aL);
+    HOST_c2l(data, l);
+    X(7) = l;
+    R0(C, D, A, B, X(6), 17, 0xa8304613L);
+    HOST_c2l(data, l);
+    X(8) = l;
+    R0(B, C, D, A, X(7), 22, 0xfd469501L);
+    HOST_c2l(data, l);
+    X(9) = l;
+    R0(A, B, C, D, X(8), 7, 0x698098d8L);
+    HOST_c2l(data, l);
+    X(10) = l;
+    R0(D, A, B, C, X(9), 12, 0x8b44f7afL);
+    HOST_c2l(data, l);
+    X(11) = l;
+    R0(C, D, A, B, X(10), 17, 0xffff5bb1L);
+    HOST_c2l(data, l);
+    X(12) = l;
+    R0(B, C, D, A, X(11), 22, 0x895cd7beL);
+    HOST_c2l(data, l);
+    X(13) = l;
+    R0(A, B, C, D, X(12), 7, 0x6b901122L);
+    HOST_c2l(data, l);
+    X(14) = l;
+    R0(D, A, B, C, X(13), 12, 0xfd987193L);
+    HOST_c2l(data, l);
+    X(15) = l;
+    R0(C, D, A, B, X(14), 17, 0xa679438eL);
+    R0(B, C, D, A, X(15), 22, 0x49b40821L);
+    // Round 1
+    R1(A, B, C, D, X(1), 5, 0xf61e2562L);
+    R1(D, A, B, C, X(6), 9, 0xc040b340L);
+    R1(C, D, A, B, X(11), 14, 0x265e5a51L);
+    R1(B, C, D, A, X(0), 20, 0xe9b6c7aaL);
+    R1(A, B, C, D, X(5), 5, 0xd62f105dL);
+    R1(D, A, B, C, X(10), 9, 0x02441453L);
+    R1(C, D, A, B, X(15), 14, 0xd8a1e681L);
+    R1(B, C, D, A, X(4), 20, 0xe7d3fbc8L);
+    R1(A, B, C, D, X(9), 5, 0x21e1cde6L);
+    R1(D, A, B, C, X(14), 9, 0xc33707d6L);
+    R1(C, D, A, B, X(3), 14, 0xf4d50d87L);
+    R1(B, C, D, A, X(8), 20, 0x455a14edL);
+    R1(A, B, C, D, X(13), 5, 0xa9e3e905L);
+    R1(D, A, B, C, X(2), 9, 0xfcefa3f8L);
+    R1(C, D, A, B, X(7), 14, 0x676f02d9L);
+    R1(B, C, D, A, X(12), 20, 0x8d2a4c8aL);
+    // Round 2
+    R2(A, B, C, D, X(5), 4, 0xfffa3942L);
+    R2(D, A, B, C, X(8), 11, 0x8771f681L);
+    R2(C, D, A, B, X(11), 16, 0x6d9d6122L);
+    R2(B, C, D, A, X(14), 23, 0xfde5380cL);
+    R2(A, B, C, D, X(1), 4, 0xa4beea44L);
+    R2(D, A, B, C, X(4), 11, 0x4bdecfa9L);
+    R2(C, D, A, B, X(7), 16, 0xf6bb4b60L);
+    R2(B, C, D, A, X(10), 23, 0xbebfbc70L);
+    R2(A, B, C, D, X(13), 4, 0x289b7ec6L);
+    R2(D, A, B, C, X(0), 11, 0xeaa127faL);
+    R2(C, D, A, B, X(3), 16, 0xd4ef3085L);
+    R2(B, C, D, A, X(6), 23, 0x04881d05L);
+    R2(A, B, C, D, X(9), 4, 0xd9d4d039L);
+    R2(D, A, B, C, X(12), 11, 0xe6db99e5L);
+    R2(C, D, A, B, X(15), 16, 0x1fa27cf8L);
+    R2(B, C, D, A, X(2), 23, 0xc4ac5665L);
+    // Round 3
+    R3(A, B, C, D, X(0), 6, 0xf4292244L);
+    R3(D, A, B, C, X(7), 10, 0x432aff97L);
+    R3(C, D, A, B, X(14), 15, 0xab9423a7L);
+    R3(B, C, D, A, X(5), 21, 0xfc93a039L);
+    R3(A, B, C, D, X(12), 6, 0x655b59c3L);
+    R3(D, A, B, C, X(3), 10, 0x8f0ccc92L);
+    R3(C, D, A, B, X(10), 15, 0xffeff47dL);
+    R3(B, C, D, A, X(1), 21, 0x85845dd1L);
+    R3(A, B, C, D, X(8), 6, 0x6fa87e4fL);
+    R3(D, A, B, C, X(15), 10, 0xfe2ce6e0L);
+    R3(C, D, A, B, X(6), 15, 0xa3014314L);
+    R3(B, C, D, A, X(13), 21, 0x4e0811a1L);
+    R3(A, B, C, D, X(4), 6, 0xf7537e82L);
+    R3(D, A, B, C, X(11), 10, 0xbd3af235L);
+    R3(C, D, A, B, X(2), 15, 0x2ad7d2bbL);
+    R3(B, C, D, A, X(9), 21, 0xeb86d391L);
+
+    A = state[0] += A;
+    B = state[1] += B;
+    C = state[2] += C;
+    D = state[3] += D;
+  }
+}
+#undef X
+#endif
+
+#undef DATA_ORDER_IS_LITTLE_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_MAKE_STRING
+#undef HASH_BLOCK_DATA_ORDER
+#undef F
+#undef G
+#undef H
+#undef I
+#undef ROTATE
+#undef R0
+#undef R1
+#undef R2
+#undef R3
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c.grpc_back
new file mode 100644
index 0000000..a48d704
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/md5/md5.c.grpc_back	
@@ -0,0 +1,301 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/md5.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+uint8_t *MD5(const uint8_t *data, size_t len, uint8_t out[MD5_DIGEST_LENGTH]) {
+  MD5_CTX ctx;
+  MD5_Init(&ctx);
+  MD5_Update(&ctx, data, len);
+  MD5_Final(out, &ctx);
+
+  return out;
+}
+
+int MD5_Init(MD5_CTX *md5) {
+  OPENSSL_memset(md5, 0, sizeof(MD5_CTX));
+  md5->h[0] = 0x67452301UL;
+  md5->h[1] = 0xefcdab89UL;
+  md5->h[2] = 0x98badcfeUL;
+  md5->h[3] = 0x10325476UL;
+  return 1;
+}
+
+#if defined(MD5_ASM)
+#define md5_block_data_order md5_block_asm_data_order
+#else
+static void md5_block_data_order(uint32_t *state, const uint8_t *data,
+                                 size_t num);
+#endif
+
+
+#define DATA_ORDER_IS_LITTLE_ENDIAN
+
+#define HASH_CTX MD5_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 16
+#define HASH_UPDATE MD5_Update
+#define HASH_TRANSFORM MD5_Transform
+#define HASH_FINAL MD5_Final
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+#define HASH_BLOCK_DATA_ORDER md5_block_data_order
+
+#include "../digest/md32_common.h"
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
+// simplified to the code below.  Wei attributes these optimizations
+// to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
+#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define G(b, c, d) ((((b) ^ (c)) & (d)) ^ (c))
+#define H(b, c, d) ((b) ^ (c) ^ (d))
+#define I(b, c, d) (((~(d)) | (b)) ^ (c))
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+#define R0(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + F((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R1(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + G((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R2(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + H((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#define R3(a, b, c, d, k, s, t)            \
+  do {                                     \
+    (a) += ((k) + (t) + I((b), (c), (d))); \
+    (a) = ROTATE(a, s);                    \
+    (a) += (b);                            \
+  } while (0)
+
+#ifndef MD5_ASM
+#ifdef X
+#undef X
+#endif
+static void md5_block_data_order(uint32_t *state, const uint8_t *data,
+                                 size_t num) {
+  uint32_t A, B, C, D, l;
+  uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10, XX11, XX12,
+      XX13, XX14, XX15;
+#define X(i) XX##i
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+
+  for (; num--;) {
+    HOST_c2l(data, l);
+    X(0) = l;
+    HOST_c2l(data, l);
+    X(1) = l;
+    // Round 0
+    R0(A, B, C, D, X(0), 7, 0xd76aa478L);
+    HOST_c2l(data, l);
+    X(2) = l;
+    R0(D, A, B, C, X(1), 12, 0xe8c7b756L);
+    HOST_c2l(data, l);
+    X(3) = l;
+    R0(C, D, A, B, X(2), 17, 0x242070dbL);
+    HOST_c2l(data, l);
+    X(4) = l;
+    R0(B, C, D, A, X(3), 22, 0xc1bdceeeL);
+    HOST_c2l(data, l);
+    X(5) = l;
+    R0(A, B, C, D, X(4), 7, 0xf57c0fafL);
+    HOST_c2l(data, l);
+    X(6) = l;
+    R0(D, A, B, C, X(5), 12, 0x4787c62aL);
+    HOST_c2l(data, l);
+    X(7) = l;
+    R0(C, D, A, B, X(6), 17, 0xa8304613L);
+    HOST_c2l(data, l);
+    X(8) = l;
+    R0(B, C, D, A, X(7), 22, 0xfd469501L);
+    HOST_c2l(data, l);
+    X(9) = l;
+    R0(A, B, C, D, X(8), 7, 0x698098d8L);
+    HOST_c2l(data, l);
+    X(10) = l;
+    R0(D, A, B, C, X(9), 12, 0x8b44f7afL);
+    HOST_c2l(data, l);
+    X(11) = l;
+    R0(C, D, A, B, X(10), 17, 0xffff5bb1L);
+    HOST_c2l(data, l);
+    X(12) = l;
+    R0(B, C, D, A, X(11), 22, 0x895cd7beL);
+    HOST_c2l(data, l);
+    X(13) = l;
+    R0(A, B, C, D, X(12), 7, 0x6b901122L);
+    HOST_c2l(data, l);
+    X(14) = l;
+    R0(D, A, B, C, X(13), 12, 0xfd987193L);
+    HOST_c2l(data, l);
+    X(15) = l;
+    R0(C, D, A, B, X(14), 17, 0xa679438eL);
+    R0(B, C, D, A, X(15), 22, 0x49b40821L);
+    // Round 1
+    R1(A, B, C, D, X(1), 5, 0xf61e2562L);
+    R1(D, A, B, C, X(6), 9, 0xc040b340L);
+    R1(C, D, A, B, X(11), 14, 0x265e5a51L);
+    R1(B, C, D, A, X(0), 20, 0xe9b6c7aaL);
+    R1(A, B, C, D, X(5), 5, 0xd62f105dL);
+    R1(D, A, B, C, X(10), 9, 0x02441453L);
+    R1(C, D, A, B, X(15), 14, 0xd8a1e681L);
+    R1(B, C, D, A, X(4), 20, 0xe7d3fbc8L);
+    R1(A, B, C, D, X(9), 5, 0x21e1cde6L);
+    R1(D, A, B, C, X(14), 9, 0xc33707d6L);
+    R1(C, D, A, B, X(3), 14, 0xf4d50d87L);
+    R1(B, C, D, A, X(8), 20, 0x455a14edL);
+    R1(A, B, C, D, X(13), 5, 0xa9e3e905L);
+    R1(D, A, B, C, X(2), 9, 0xfcefa3f8L);
+    R1(C, D, A, B, X(7), 14, 0x676f02d9L);
+    R1(B, C, D, A, X(12), 20, 0x8d2a4c8aL);
+    // Round 2
+    R2(A, B, C, D, X(5), 4, 0xfffa3942L);
+    R2(D, A, B, C, X(8), 11, 0x8771f681L);
+    R2(C, D, A, B, X(11), 16, 0x6d9d6122L);
+    R2(B, C, D, A, X(14), 23, 0xfde5380cL);
+    R2(A, B, C, D, X(1), 4, 0xa4beea44L);
+    R2(D, A, B, C, X(4), 11, 0x4bdecfa9L);
+    R2(C, D, A, B, X(7), 16, 0xf6bb4b60L);
+    R2(B, C, D, A, X(10), 23, 0xbebfbc70L);
+    R2(A, B, C, D, X(13), 4, 0x289b7ec6L);
+    R2(D, A, B, C, X(0), 11, 0xeaa127faL);
+    R2(C, D, A, B, X(3), 16, 0xd4ef3085L);
+    R2(B, C, D, A, X(6), 23, 0x04881d05L);
+    R2(A, B, C, D, X(9), 4, 0xd9d4d039L);
+    R2(D, A, B, C, X(12), 11, 0xe6db99e5L);
+    R2(C, D, A, B, X(15), 16, 0x1fa27cf8L);
+    R2(B, C, D, A, X(2), 23, 0xc4ac5665L);
+    // Round 3
+    R3(A, B, C, D, X(0), 6, 0xf4292244L);
+    R3(D, A, B, C, X(7), 10, 0x432aff97L);
+    R3(C, D, A, B, X(14), 15, 0xab9423a7L);
+    R3(B, C, D, A, X(5), 21, 0xfc93a039L);
+    R3(A, B, C, D, X(12), 6, 0x655b59c3L);
+    R3(D, A, B, C, X(3), 10, 0x8f0ccc92L);
+    R3(C, D, A, B, X(10), 15, 0xffeff47dL);
+    R3(B, C, D, A, X(1), 21, 0x85845dd1L);
+    R3(A, B, C, D, X(8), 6, 0x6fa87e4fL);
+    R3(D, A, B, C, X(15), 10, 0xfe2ce6e0L);
+    R3(C, D, A, B, X(6), 15, 0xa3014314L);
+    R3(B, C, D, A, X(13), 21, 0x4e0811a1L);
+    R3(A, B, C, D, X(4), 6, 0xf7537e82L);
+    R3(D, A, B, C, X(11), 10, 0xbd3af235L);
+    R3(C, D, A, B, X(2), 15, 0x2ad7d2bbL);
+    R3(B, C, D, A, X(9), 21, 0xeb86d391L);
+
+    A = state[0] += A;
+    B = state[1] += B;
+    C = state[2] += C;
+    D = state[3] += D;
+  }
+}
+#undef X
+#endif
+
+#undef DATA_ORDER_IS_LITTLE_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_MAKE_STRING
+#undef HASH_BLOCK_DATA_ORDER
+#undef F
+#undef G
+#undef H
+#undef I
+#undef ROTATE
+#undef R0
+#undef R1
+#undef R2
+#undef R3
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c
new file mode 100644
index 0000000..504d319
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c	
@@ -0,0 +1,167 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+
+
+void CRYPTO_cbc128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block) {
+  size_t n;
+  const uint8_t *iv = ivec;
+
+  assert(key != NULL && ivec != NULL);
+  assert(len == 0 || (in != NULL && out != NULL));
+
+  while (len >= 16) {
+    for (n = 0; n < 16; n += sizeof(size_t)) {
+      store_word_le(out + n, load_word_le(in + n) ^ load_word_le(iv + n));
+    }
+    (*block)(out, out, key);
+    iv = out;
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+
+  while (len) {
+    for (n = 0; n < 16 && n < len; ++n) {
+      out[n] = in[n] ^ iv[n];
+    }
+    for (; n < 16; ++n) {
+      out[n] = iv[n];
+    }
+    (*block)(out, out, key);
+    iv = out;
+    if (len <= 16) {
+      break;
+    }
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+
+  OPENSSL_memcpy(ivec, iv, 16);
+}
+
+void CRYPTO_cbc128_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block) {
+  size_t n;
+  union {
+    size_t t[16 / sizeof(size_t)];
+    uint8_t c[16];
+  } tmp;
+
+  assert(key != NULL && ivec != NULL);
+  assert(len == 0 || (in != NULL && out != NULL));
+
+  const uintptr_t inptr = (uintptr_t) in;
+  const uintptr_t outptr = (uintptr_t) out;
+  // If |in| and |out| alias, |in| must be ahead.
+  assert(inptr >= outptr || inptr + len <= outptr);
+
+  if ((inptr >= 32 && outptr <= inptr - 32) || inptr < outptr) {
+    // If |out| is at least two blocks behind |in| or completely disjoint, there
+    // is no need to decrypt to a temporary block.
+    OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                          "block cannot be evenly divided into words");
+    const uint8_t *iv = ivec;
+    while (len >= 16) {
+      (*block)(in, out, key);
+      for (n = 0; n < 16; n += sizeof(size_t)) {
+        store_word_le(out + n, load_word_le(out + n) ^ load_word_le(iv + n));
+      }
+      iv = in;
+      len -= 16;
+      in += 16;
+      out += 16;
+    }
+    OPENSSL_memcpy(ivec, iv, 16);
+  } else {
+    OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                          "block cannot be evenly divided into words");
+
+    while (len >= 16) {
+      (*block)(in, tmp.c, key);
+      for (n = 0; n < 16; n += sizeof(size_t)) {
+        size_t c = load_word_le(in + n);
+        store_word_le(out + n,
+                      tmp.t[n / sizeof(size_t)] ^ load_word_le(ivec + n));
+        store_word_le(ivec + n, c);
+      }
+      len -= 16;
+      in += 16;
+      out += 16;
+    }
+  }
+
+  while (len) {
+    uint8_t c;
+    (*block)(in, tmp.c, key);
+    for (n = 0; n < 16 && n < len; ++n) {
+      c = in[n];
+      out[n] = tmp.c[n] ^ ivec[n];
+      ivec[n] = c;
+    }
+    if (len <= 16) {
+      for (; n < 16; ++n) {
+        ivec[n] = in[n];
+      }
+      break;
+    }
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c.grpc_back
new file mode 100644
index 0000000..3f1d777
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cbc.c.grpc_back	
@@ -0,0 +1,167 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/type_check.h>
+
+#include "internal.h"
+
+
+void CRYPTO_cbc128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block) {
+  size_t n;
+  const uint8_t *iv = ivec;
+
+  assert(key != NULL && ivec != NULL);
+  assert(len == 0 || (in != NULL && out != NULL));
+
+  while (len >= 16) {
+    for (n = 0; n < 16; n += sizeof(size_t)) {
+      store_word_le(out + n, load_word_le(in + n) ^ load_word_le(iv + n));
+    }
+    (*block)(out, out, key);
+    iv = out;
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+
+  while (len) {
+    for (n = 0; n < 16 && n < len; ++n) {
+      out[n] = in[n] ^ iv[n];
+    }
+    for (; n < 16; ++n) {
+      out[n] = iv[n];
+    }
+    (*block)(out, out, key);
+    iv = out;
+    if (len <= 16) {
+      break;
+    }
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+
+  OPENSSL_memcpy(ivec, iv, 16);
+}
+
+void CRYPTO_cbc128_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block) {
+  size_t n;
+  union {
+    size_t t[16 / sizeof(size_t)];
+    uint8_t c[16];
+  } tmp;
+
+  assert(key != NULL && ivec != NULL);
+  assert(len == 0 || (in != NULL && out != NULL));
+
+  const uintptr_t inptr = (uintptr_t) in;
+  const uintptr_t outptr = (uintptr_t) out;
+  // If |in| and |out| alias, |in| must be ahead.
+  assert(inptr >= outptr || inptr + len <= outptr);
+
+  if ((inptr >= 32 && outptr <= inptr - 32) || inptr < outptr) {
+    // If |out| is at least two blocks behind |in| or completely disjoint, there
+    // is no need to decrypt to a temporary block.
+    OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                          "block cannot be evenly divided into words");
+    const uint8_t *iv = ivec;
+    while (len >= 16) {
+      (*block)(in, out, key);
+      for (n = 0; n < 16; n += sizeof(size_t)) {
+        store_word_le(out + n, load_word_le(out + n) ^ load_word_le(iv + n));
+      }
+      iv = in;
+      len -= 16;
+      in += 16;
+      out += 16;
+    }
+    OPENSSL_memcpy(ivec, iv, 16);
+  } else {
+    OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                          "block cannot be evenly divided into words");
+
+    while (len >= 16) {
+      (*block)(in, tmp.c, key);
+      for (n = 0; n < 16; n += sizeof(size_t)) {
+        size_t c = load_word_le(in + n);
+        store_word_le(out + n,
+                      tmp.t[n / sizeof(size_t)] ^ load_word_le(ivec + n));
+        store_word_le(ivec + n, c);
+      }
+      len -= 16;
+      in += 16;
+      out += 16;
+    }
+  }
+
+  while (len) {
+    uint8_t c;
+    (*block)(in, tmp.c, key);
+    for (n = 0; n < 16 && n < len; ++n) {
+      c = in[n];
+      out[n] = tmp.c[n] ^ ivec[n];
+      ivec[n] = c;
+    }
+    if (len <= 16) {
+      for (; n < 16; ++n) {
+        ivec[n] = in[n];
+      }
+      break;
+    }
+    len -= 16;
+    in += 16;
+    out += 16;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c
new file mode 100644
index 0000000..497e5e0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c	
@@ -0,0 +1,202 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+void CRYPTO_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           int enc, block128_f block) {
+  assert(in && out && key && ivec && num);
+
+  unsigned n = *num;
+
+  if (enc) {
+    while (n && len) {
+      *(out++) = ivec[n] ^= *(in++);
+      --len;
+      n = (n + 1) % 16;
+    }
+    while (len >= 16) {
+      (*block)(ivec, ivec, key);
+      for (; n < 16; n += sizeof(size_t)) {
+        size_t tmp = load_word_le(ivec + n) ^ load_word_le(in + n);
+        store_word_le(ivec + n, tmp);
+        store_word_le(out + n, tmp);
+      }
+      len -= 16;
+      out += 16;
+      in += 16;
+      n = 0;
+    }
+    if (len) {
+      (*block)(ivec, ivec, key);
+      while (len--) {
+        out[n] = ivec[n] ^= in[n];
+        ++n;
+      }
+    }
+    *num = n;
+    return;
+  } else {
+    while (n && len) {
+      uint8_t c;
+      *(out++) = ivec[n] ^ (c = *(in++));
+      ivec[n] = c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    while (len >= 16) {
+      (*block)(ivec, ivec, key);
+      for (; n < 16; n += sizeof(size_t)) {
+        size_t t = load_word_le(in + n);
+        store_word_le(out + n, load_word_le(ivec + n) ^ t);
+        store_word_le(ivec + n, t);
+      }
+      len -= 16;
+      out += 16;
+      in += 16;
+      n = 0;
+    }
+    if (len) {
+      (*block)(ivec, ivec, key);
+      while (len--) {
+        uint8_t c;
+        out[n] = ivec[n] ^ (c = in[n]);
+        ivec[n] = c;
+        ++n;
+      }
+    }
+    *num = n;
+    return;
+  }
+}
+
+
+/* This expects a single block of size nbits for both in and out. Note that
+   it corrupts any extra bits in the last byte of out */
+static void cfbr_encrypt_block(const uint8_t *in, uint8_t *out, unsigned nbits,
+                               const AES_KEY *key, uint8_t ivec[16], int enc,
+                               block128_f block) {
+  int n, rem, num;
+  uint8_t ovec[16 * 2 + 1]; /* +1 because we dererefence (but don't use) one
+                               byte off the end */
+
+  if (nbits <= 0 || nbits > 128) {
+    return;
+  }
+
+  // fill in the first half of the new IV with the current IV
+  OPENSSL_memcpy(ovec, ivec, 16);
+  // construct the new IV
+  (*block)(ivec, ivec, key);
+  num = (nbits + 7) / 8;
+  if (enc) {
+    // encrypt the input
+    for (n = 0; n < num; ++n) {
+      out[n] = (ovec[16 + n] = in[n] ^ ivec[n]);
+    }
+  } else {
+    // decrypt the input
+    for (n = 0; n < num; ++n) {
+      out[n] = (ovec[16 + n] = in[n]) ^ ivec[n];
+    }
+  }
+  // shift ovec left...
+  rem = nbits % 8;
+  num = nbits / 8;
+  if (rem == 0) {
+    OPENSSL_memcpy(ivec, ovec + num, 16);
+  } else {
+    for (n = 0; n < 16; ++n) {
+      ivec[n] = ovec[n + num] << rem | ovec[n + num + 1] >> (8 - rem);
+    }
+  }
+
+  // it is not necessary to cleanse ovec, since the IV is not secret
+}
+
+// N.B. This expects the input to be packed, MS bit first
+void CRYPTO_cfb128_1_encrypt(const uint8_t *in, uint8_t *out, size_t bits,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block) {
+  size_t n;
+  uint8_t c[1], d[1];
+
+  assert(in && out && key && ivec && num);
+  assert(*num == 0);
+
+  for (n = 0; n < bits; ++n) {
+    c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
+    cfbr_encrypt_block(c, d, 1, key, ivec, enc, block);
+    out[n / 8] = (out[n / 8] & ~(1 << (unsigned int)(7 - n % 8))) |
+                 ((d[0] & 0x80) >> (unsigned int)(n % 8));
+  }
+}
+
+void CRYPTO_cfb128_8_encrypt(const unsigned char *in, unsigned char *out,
+                             size_t length, const AES_KEY *key,
+                             unsigned char ivec[16], unsigned *num, int enc,
+                             block128_f block) {
+  size_t n;
+
+  assert(in && out && key && ivec && num);
+  assert(*num == 0);
+
+  for (n = 0; n < length; ++n) {
+    cfbr_encrypt_block(&in[n], &out[n], 8, key, ivec, enc, block);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c.grpc_back
new file mode 100644
index 0000000..8ca9004
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/cfb.c.grpc_back	
@@ -0,0 +1,202 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+void CRYPTO_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           int enc, block128_f block) {
+  assert(in && out && key && ivec && num);
+
+  unsigned n = *num;
+
+  if (enc) {
+    while (n && len) {
+      *(out++) = ivec[n] ^= *(in++);
+      --len;
+      n = (n + 1) % 16;
+    }
+    while (len >= 16) {
+      (*block)(ivec, ivec, key);
+      for (; n < 16; n += sizeof(size_t)) {
+        size_t tmp = load_word_le(ivec + n) ^ load_word_le(in + n);
+        store_word_le(ivec + n, tmp);
+        store_word_le(out + n, tmp);
+      }
+      len -= 16;
+      out += 16;
+      in += 16;
+      n = 0;
+    }
+    if (len) {
+      (*block)(ivec, ivec, key);
+      while (len--) {
+        out[n] = ivec[n] ^= in[n];
+        ++n;
+      }
+    }
+    *num = n;
+    return;
+  } else {
+    while (n && len) {
+      uint8_t c;
+      *(out++) = ivec[n] ^ (c = *(in++));
+      ivec[n] = c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    while (len >= 16) {
+      (*block)(ivec, ivec, key);
+      for (; n < 16; n += sizeof(size_t)) {
+        size_t t = load_word_le(in + n);
+        store_word_le(out + n, load_word_le(ivec + n) ^ t);
+        store_word_le(ivec + n, t);
+      }
+      len -= 16;
+      out += 16;
+      in += 16;
+      n = 0;
+    }
+    if (len) {
+      (*block)(ivec, ivec, key);
+      while (len--) {
+        uint8_t c;
+        out[n] = ivec[n] ^ (c = in[n]);
+        ivec[n] = c;
+        ++n;
+      }
+    }
+    *num = n;
+    return;
+  }
+}
+
+
+/* This expects a single block of size nbits for both in and out. Note that
+   it corrupts any extra bits in the last byte of out */
+static void cfbr_encrypt_block(const uint8_t *in, uint8_t *out, unsigned nbits,
+                               const AES_KEY *key, uint8_t ivec[16], int enc,
+                               block128_f block) {
+  int n, rem, num;
+  uint8_t ovec[16 * 2 + 1]; /* +1 because we dererefence (but don't use) one
+                               byte off the end */
+
+  if (nbits <= 0 || nbits > 128) {
+    return;
+  }
+
+  // fill in the first half of the new IV with the current IV
+  OPENSSL_memcpy(ovec, ivec, 16);
+  // construct the new IV
+  (*block)(ivec, ivec, key);
+  num = (nbits + 7) / 8;
+  if (enc) {
+    // encrypt the input
+    for (n = 0; n < num; ++n) {
+      out[n] = (ovec[16 + n] = in[n] ^ ivec[n]);
+    }
+  } else {
+    // decrypt the input
+    for (n = 0; n < num; ++n) {
+      out[n] = (ovec[16 + n] = in[n]) ^ ivec[n];
+    }
+  }
+  // shift ovec left...
+  rem = nbits % 8;
+  num = nbits / 8;
+  if (rem == 0) {
+    OPENSSL_memcpy(ivec, ovec + num, 16);
+  } else {
+    for (n = 0; n < 16; ++n) {
+      ivec[n] = ovec[n + num] << rem | ovec[n + num + 1] >> (8 - rem);
+    }
+  }
+
+  // it is not necessary to cleanse ovec, since the IV is not secret
+}
+
+// N.B. This expects the input to be packed, MS bit first
+void CRYPTO_cfb128_1_encrypt(const uint8_t *in, uint8_t *out, size_t bits,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block) {
+  size_t n;
+  uint8_t c[1], d[1];
+
+  assert(in && out && key && ivec && num);
+  assert(*num == 0);
+
+  for (n = 0; n < bits; ++n) {
+    c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
+    cfbr_encrypt_block(c, d, 1, key, ivec, enc, block);
+    out[n / 8] = (out[n / 8] & ~(1 << (unsigned int)(7 - n % 8))) |
+                 ((d[0] & 0x80) >> (unsigned int)(n % 8));
+  }
+}
+
+void CRYPTO_cfb128_8_encrypt(const unsigned char *in, unsigned char *out,
+                             size_t length, const AES_KEY *key,
+                             unsigned char ivec[16], unsigned *num, int enc,
+                             block128_f block) {
+  size_t n;
+
+  assert(in && out && key && ivec && num);
+  assert(*num == 0);
+
+  for (n = 0; n < length; ++n) {
+    cfbr_encrypt_block(&in[n], &out[n], 8, key, ivec, enc, block);
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c
new file mode 100644
index 0000000..ebbfad4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c	
@@ -0,0 +1,200 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+// NOTE: the IV/counter CTR mode is big-endian.  The code itself
+// is endian-neutral.
+
+// increment counter (128-bit int) by 1
+static void ctr128_inc(uint8_t *counter) {
+  uint32_t n = 16, c = 1;
+
+  do {
+    --n;
+    c += counter[n];
+    counter[n] = (uint8_t) c;
+    c >>= 8;
+  } while (n);
+}
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+// The input encrypted as though 128bit counter mode is being used.  The extra
+// state information to record how much of the 128bit block we have used is
+// contained in *num, and the encrypted counter is kept in ecount_buf.  Both
+// *num and ecount_buf must be initialised with zeros before the first call to
+// CRYPTO_ctr128_encrypt().
+//
+// This algorithm assumes that the counter is in the x lower bits of the IV
+// (ivec), and that the application has full control over overflow and the rest
+// of the IV.  This implementation takes NO responsibility for checking that
+// the counter doesn't overflow into the rest of the IV when incremented.
+void CRYPTO_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           uint8_t ecount_buf[16], unsigned int *num,
+                           block128_f block) {
+  unsigned int n;
+
+  assert(key && ecount_buf && num);
+  assert(len == 0 || (in && out));
+  assert(*num < 16);
+
+  n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ecount_buf[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+  while (len >= 16) {
+    (*block)(ivec, ecount_buf, key);
+    ctr128_inc(ivec);
+    for (n = 0; n < 16; n += sizeof(size_t)) {
+      store_word_le(out + n,
+                    load_word_le(in + n) ^ load_word_le(ecount_buf + n));
+    }
+    len -= 16;
+    out += 16;
+    in += 16;
+    n = 0;
+  }
+  if (len) {
+    (*block)(ivec, ecount_buf, key);
+    ctr128_inc(ivec);
+    while (len--) {
+      out[n] = in[n] ^ ecount_buf[n];
+      ++n;
+    }
+  }
+  *num = n;
+}
+
+// increment upper 96 bits of 128-bit counter by 1
+static void ctr96_inc(uint8_t *counter) {
+  uint32_t n = 12, c = 1;
+
+  do {
+    --n;
+    c += counter[n];
+    counter[n] = (uint8_t) c;
+    c >>= 8;
+  } while (n);
+}
+
+void CRYPTO_ctr128_encrypt_ctr32(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, uint8_t ivec[16],
+                                 uint8_t ecount_buf[16], unsigned int *num,
+                                 ctr128_f func) {
+  unsigned int n, ctr32;
+
+  assert(key && ecount_buf && num);
+  assert(len == 0 || (in && out));
+  assert(*num < 16);
+
+  n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ecount_buf[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+
+  ctr32 = GETU32(ivec + 12);
+  while (len >= 16) {
+    size_t blocks = len / 16;
+    // 1<<28 is just a not-so-small yet not-so-large number...
+    // Below condition is practically never met, but it has to
+    // be checked for code correctness.
+    if (sizeof(size_t) > sizeof(unsigned int) && blocks > (1U << 28)) {
+      blocks = (1U << 28);
+    }
+    // As (*func) operates on 32-bit counter, caller
+    // has to handle overflow. 'if' below detects the
+    // overflow, which is then handled by limiting the
+    // amount of blocks to the exact overflow point...
+    ctr32 += (uint32_t)blocks;
+    if (ctr32 < blocks) {
+      blocks -= ctr32;
+      ctr32 = 0;
+    }
+    (*func)(in, out, blocks, key, ivec);
+    // (*func) does not update ivec, caller does:
+    PUTU32(ivec + 12, ctr32);
+    // ... overflow was detected, propogate carry.
+    if (ctr32 == 0) {
+      ctr96_inc(ivec);
+    }
+    blocks *= 16;
+    len -= blocks;
+    out += blocks;
+    in += blocks;
+  }
+  if (len) {
+    OPENSSL_memset(ecount_buf, 0, 16);
+    (*func)(ecount_buf, ecount_buf, 1, key, ivec);
+    ++ctr32;
+    PUTU32(ivec + 12, ctr32);
+    if (ctr32 == 0) {
+      ctr96_inc(ivec);
+    }
+    while (len--) {
+      out[n] = in[n] ^ ecount_buf[n];
+      ++n;
+    }
+  }
+
+  *num = n;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c.grpc_back
new file mode 100644
index 0000000..8b0e059
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ctr.c.grpc_back	
@@ -0,0 +1,200 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+// NOTE: the IV/counter CTR mode is big-endian.  The code itself
+// is endian-neutral.
+
+// increment counter (128-bit int) by 1
+static void ctr128_inc(uint8_t *counter) {
+  uint32_t n = 16, c = 1;
+
+  do {
+    --n;
+    c += counter[n];
+    counter[n] = (uint8_t) c;
+    c >>= 8;
+  } while (n);
+}
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+// The input encrypted as though 128bit counter mode is being used.  The extra
+// state information to record how much of the 128bit block we have used is
+// contained in *num, and the encrypted counter is kept in ecount_buf.  Both
+// *num and ecount_buf must be initialised with zeros before the first call to
+// CRYPTO_ctr128_encrypt().
+//
+// This algorithm assumes that the counter is in the x lower bits of the IV
+// (ivec), and that the application has full control over overflow and the rest
+// of the IV.  This implementation takes NO responsibility for checking that
+// the counter doesn't overflow into the rest of the IV when incremented.
+void CRYPTO_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           uint8_t ecount_buf[16], unsigned int *num,
+                           block128_f block) {
+  unsigned int n;
+
+  assert(key && ecount_buf && num);
+  assert(len == 0 || (in && out));
+  assert(*num < 16);
+
+  n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ecount_buf[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+  while (len >= 16) {
+    (*block)(ivec, ecount_buf, key);
+    ctr128_inc(ivec);
+    for (n = 0; n < 16; n += sizeof(size_t)) {
+      store_word_le(out + n,
+                    load_word_le(in + n) ^ load_word_le(ecount_buf + n));
+    }
+    len -= 16;
+    out += 16;
+    in += 16;
+    n = 0;
+  }
+  if (len) {
+    (*block)(ivec, ecount_buf, key);
+    ctr128_inc(ivec);
+    while (len--) {
+      out[n] = in[n] ^ ecount_buf[n];
+      ++n;
+    }
+  }
+  *num = n;
+}
+
+// increment upper 96 bits of 128-bit counter by 1
+static void ctr96_inc(uint8_t *counter) {
+  uint32_t n = 12, c = 1;
+
+  do {
+    --n;
+    c += counter[n];
+    counter[n] = (uint8_t) c;
+    c >>= 8;
+  } while (n);
+}
+
+void CRYPTO_ctr128_encrypt_ctr32(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, uint8_t ivec[16],
+                                 uint8_t ecount_buf[16], unsigned int *num,
+                                 ctr128_f func) {
+  unsigned int n, ctr32;
+
+  assert(key && ecount_buf && num);
+  assert(len == 0 || (in && out));
+  assert(*num < 16);
+
+  n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ecount_buf[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+
+  ctr32 = GETU32(ivec + 12);
+  while (len >= 16) {
+    size_t blocks = len / 16;
+    // 1<<28 is just a not-so-small yet not-so-large number...
+    // Below condition is practically never met, but it has to
+    // be checked for code correctness.
+    if (sizeof(size_t) > sizeof(unsigned int) && blocks > (1U << 28)) {
+      blocks = (1U << 28);
+    }
+    // As (*func) operates on 32-bit counter, caller
+    // has to handle overflow. 'if' below detects the
+    // overflow, which is then handled by limiting the
+    // amount of blocks to the exact overflow point...
+    ctr32 += (uint32_t)blocks;
+    if (ctr32 < blocks) {
+      blocks -= ctr32;
+      ctr32 = 0;
+    }
+    (*func)(in, out, blocks, key, ivec);
+    // (*func) does not update ivec, caller does:
+    PUTU32(ivec + 12, ctr32);
+    // ... overflow was detected, propogate carry.
+    if (ctr32 == 0) {
+      ctr96_inc(ivec);
+    }
+    blocks *= 16;
+    len -= blocks;
+    out += blocks;
+    in += blocks;
+  }
+  if (len) {
+    OPENSSL_memset(ecount_buf, 0, 16);
+    (*func)(ecount_buf, ecount_buf, 1, key, ivec);
+    ++ctr32;
+    PUTU32(ivec + 12, ctr32);
+    if (ctr32 == 0) {
+      ctr96_inc(ivec);
+    }
+    while (len--) {
+      out[n] = in[n] ^ ecount_buf[n];
+      ++n;
+    }
+  }
+
+  *num = n;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c
new file mode 100644
index 0000000..b8e5676
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c	
@@ -0,0 +1,729 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/base.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/cpu.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// kSizeTWithoutLower4Bits is a mask that can be used to zero the lower four
+// bits of a |size_t|.
+static const size_t kSizeTWithoutLower4Bits = (size_t) -16;
+
+
+#define GCM_MUL(ctx, Xi) gcm_gmult_nohw((ctx)->Xi.u, (ctx)->gcm_key.Htable)
+#define GHASH(ctx, in, len) \
+  gcm_ghash_nohw((ctx)->Xi.u, (ctx)->gcm_key.Htable, in, len)
+// GHASH_CHUNK is "stride parameter" missioned to mitigate cache
+// trashing effect. In other words idea is to hash data while it's
+// still in L1 cache after encryption pass...
+#define GHASH_CHUNK (3 * 1024)
+
+#if defined(GHASH_ASM_X86_64) || defined(GHASH_ASM_X86)
+static inline void gcm_reduce_1bit(u128 *V) {
+  if (sizeof(size_t) == 8) {
+    uint64_t T = UINT64_C(0xe100000000000000) & (0 - (V->hi & 1));
+    V->hi = (V->lo << 63) | (V->hi >> 1);
+    V->lo = (V->lo >> 1) ^ T;
+  } else {
+    uint32_t T = 0xe1000000U & (0 - (uint32_t)(V->hi & 1));
+    V->hi = (V->lo << 63) | (V->hi >> 1);
+    V->lo = (V->lo >> 1) ^ ((uint64_t)T << 32);
+  }
+}
+
+void gcm_init_ssse3(u128 Htable[16], const uint64_t H[2]) {
+  Htable[0].hi = 0;
+  Htable[0].lo = 0;
+  u128 V;
+  V.hi = H[1];
+  V.lo = H[0];
+
+  Htable[8] = V;
+  gcm_reduce_1bit(&V);
+  Htable[4] = V;
+  gcm_reduce_1bit(&V);
+  Htable[2] = V;
+  gcm_reduce_1bit(&V);
+  Htable[1] = V;
+  Htable[3].hi = V.hi ^ Htable[2].hi, Htable[3].lo = V.lo ^ Htable[2].lo;
+  V = Htable[4];
+  Htable[5].hi = V.hi ^ Htable[1].hi, Htable[5].lo = V.lo ^ Htable[1].lo;
+  Htable[6].hi = V.hi ^ Htable[2].hi, Htable[6].lo = V.lo ^ Htable[2].lo;
+  Htable[7].hi = V.hi ^ Htable[3].hi, Htable[7].lo = V.lo ^ Htable[3].lo;
+  V = Htable[8];
+  Htable[9].hi = V.hi ^ Htable[1].hi, Htable[9].lo = V.lo ^ Htable[1].lo;
+  Htable[10].hi = V.hi ^ Htable[2].hi, Htable[10].lo = V.lo ^ Htable[2].lo;
+  Htable[11].hi = V.hi ^ Htable[3].hi, Htable[11].lo = V.lo ^ Htable[3].lo;
+  Htable[12].hi = V.hi ^ Htable[4].hi, Htable[12].lo = V.lo ^ Htable[4].lo;
+  Htable[13].hi = V.hi ^ Htable[5].hi, Htable[13].lo = V.lo ^ Htable[5].lo;
+  Htable[14].hi = V.hi ^ Htable[6].hi, Htable[14].lo = V.lo ^ Htable[6].lo;
+  Htable[15].hi = V.hi ^ Htable[7].hi, Htable[15].lo = V.lo ^ Htable[7].lo;
+
+  // Treat |Htable| as a 16x16 byte table and transpose it. Thus, Htable[i]
+  // contains the i'th byte of j*H for all j.
+  uint8_t *Hbytes = (uint8_t *)Htable;
+  for (int i = 0; i < 16; i++) {
+    for (int j = 0; j < i; j++) {
+      uint8_t tmp = Hbytes[16*i + j];
+      Hbytes[16*i + j] = Hbytes[16*j + i];
+      Hbytes[16*j + i] = tmp;
+    }
+  }
+}
+#endif  // GHASH_ASM_X86_64 || GHASH_ASM_X86
+
+#ifdef GCM_FUNCREF
+#undef GCM_MUL
+#define GCM_MUL(ctx, Xi) (*gcm_gmult_p)((ctx)->Xi.u, (ctx)->gcm_key.Htable)
+#undef GHASH
+#define GHASH(ctx, in, len) \
+  (*gcm_ghash_p)((ctx)->Xi.u, (ctx)->gcm_key.Htable, in, len)
+#endif  // GCM_FUNCREF
+
+void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash,
+                       u128 *out_key, u128 out_table[16], int *out_is_avx,
+                       const uint8_t gcm_key[16]) {
+  *out_is_avx = 0;
+
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } H;
+
+  OPENSSL_memcpy(H.c, gcm_key, 16);
+
+  // H is stored in host byte order
+  H.u[0] = CRYPTO_bswap8(H.u[0]);
+  H.u[1] = CRYPTO_bswap8(H.u[1]);
+
+  OPENSSL_memcpy(out_key, H.c, 16);
+
+#if defined(GHASH_ASM_X86_64)
+  if (crypto_gcm_clmul_enabled()) {
+    if (((OPENSSL_ia32cap_get()[1] >> 22) & 0x41) == 0x41) {  // AVX+MOVBE
+      gcm_init_avx(out_table, H.u);
+      *out_mult = gcm_gmult_avx;
+      *out_hash = gcm_ghash_avx;
+      *out_is_avx = 1;
+      return;
+    }
+    gcm_init_clmul(out_table, H.u);
+    *out_mult = gcm_gmult_clmul;
+    *out_hash = gcm_ghash_clmul;
+    return;
+  }
+  if (gcm_ssse3_capable()) {
+    gcm_init_ssse3(out_table, H.u);
+    *out_mult = gcm_gmult_ssse3;
+    *out_hash = gcm_ghash_ssse3;
+    return;
+  }
+#elif defined(GHASH_ASM_X86)
+  if (crypto_gcm_clmul_enabled()) {
+    gcm_init_clmul(out_table, H.u);
+    *out_mult = gcm_gmult_clmul;
+    *out_hash = gcm_ghash_clmul;
+    return;
+  }
+  if (gcm_ssse3_capable()) {
+    gcm_init_ssse3(out_table, H.u);
+    *out_mult = gcm_gmult_ssse3;
+    *out_hash = gcm_ghash_ssse3;
+    return;
+  }
+#elif defined(GHASH_ASM_ARM)
+  if (gcm_pmull_capable()) {
+    gcm_init_v8(out_table, H.u);
+    *out_mult = gcm_gmult_v8;
+    *out_hash = gcm_ghash_v8;
+    return;
+  }
+
+  if (gcm_neon_capable()) {
+    gcm_init_neon(out_table, H.u);
+    *out_mult = gcm_gmult_neon;
+    *out_hash = gcm_ghash_neon;
+    return;
+  }
+#elif defined(GHASH_ASM_PPC64LE)
+  if (CRYPTO_is_PPC64LE_vcrypto_capable()) {
+    gcm_init_p8(out_table, H.u);
+    *out_mult = gcm_gmult_p8;
+    *out_hash = gcm_ghash_p8;
+    return;
+  }
+#endif
+
+  gcm_init_nohw(out_table, H.u);
+  *out_mult = gcm_gmult_nohw;
+  *out_hash = gcm_ghash_nohw;
+}
+
+void CRYPTO_gcm128_init_key(GCM128_KEY *gcm_key, const AES_KEY *aes_key,
+                            block128_f block, int block_is_hwaes) {
+  OPENSSL_memset(gcm_key, 0, sizeof(*gcm_key));
+  gcm_key->block = block;
+
+  uint8_t ghash_key[16];
+  OPENSSL_memset(ghash_key, 0, sizeof(ghash_key));
+  (*block)(ghash_key, ghash_key, aes_key);
+
+  int is_avx;
+  CRYPTO_ghash_init(&gcm_key->gmult, &gcm_key->ghash, &gcm_key->H,
+                    gcm_key->Htable, &is_avx, ghash_key);
+
+  gcm_key->use_aesni_gcm_crypt = (is_avx && block_is_hwaes) ? 1 : 0;
+}
+
+void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                         const uint8_t *iv, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+#endif
+
+  ctx->Yi.u[0] = 0;
+  ctx->Yi.u[1] = 0;
+  ctx->Xi.u[0] = 0;
+  ctx->Xi.u[1] = 0;
+  ctx->len.u[0] = 0;  // AAD length
+  ctx->len.u[1] = 0;  // message length
+  ctx->ares = 0;
+  ctx->mres = 0;
+
+  uint32_t ctr;
+  if (len == 12) {
+    OPENSSL_memcpy(ctx->Yi.c, iv, 12);
+    ctx->Yi.c[15] = 1;
+    ctr = 1;
+  } else {
+    uint64_t len0 = len;
+
+    while (len >= 16) {
+      for (size_t i = 0; i < 16; ++i) {
+        ctx->Yi.c[i] ^= iv[i];
+      }
+      GCM_MUL(ctx, Yi);
+      iv += 16;
+      len -= 16;
+    }
+    if (len) {
+      for (size_t i = 0; i < len; ++i) {
+        ctx->Yi.c[i] ^= iv[i];
+      }
+      GCM_MUL(ctx, Yi);
+    }
+    len0 <<= 3;
+    ctx->Yi.u[1] ^= CRYPTO_bswap8(len0);
+
+    GCM_MUL(ctx, Yi);
+    ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  }
+
+  (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EK0.c, key);
+  ++ctr;
+  ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+}
+
+int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const uint8_t *aad, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  if (ctx->len.u[1]) {
+    return 0;
+  }
+
+  uint64_t alen = ctx->len.u[0] + len;
+  if (alen > (UINT64_C(1) << 61) || (sizeof(len) == 8 && alen < len)) {
+    return 0;
+  }
+  ctx->len.u[0] = alen;
+
+  unsigned n = ctx->ares;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(aad++);
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->ares = n;
+      return 1;
+    }
+  }
+
+  // Process a whole number of blocks.
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    GHASH(ctx, aad, len_blocks);
+    aad += len_blocks;
+    len -= len_blocks;
+  }
+
+  // Process the remainder.
+  if (len != 0) {
+    n = (unsigned int)len;
+    for (size_t i = 0; i < len; ++i) {
+      ctx->Xi.c[i] ^= aad[i];
+    }
+  }
+
+  ctx->ares = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                          const uint8_t *in, uint8_t *out, size_t len) {
+  block128_f block = ctx->gcm_key.block;
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to encrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(out++) = *(in++) ^ ctx->EKi.c[n];
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    size_t j = GHASH_CHUNK;
+
+    while (j) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      j -= 16;
+    }
+    GHASH(ctx, out - GHASH_CHUNK, GHASH_CHUNK);
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    while (len >= 16) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      len -= 16;
+    }
+    GHASH(ctx, out - len_blocks, len_blocks);
+  }
+  if (len) {
+    (*block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      ctx->Xi.c[n] ^= out[n] = in[n] ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                          const unsigned char *in, unsigned char *out,
+                          size_t len) {
+  block128_f block = ctx->gcm_key.block;
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to decrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      uint8_t c = *(in++);
+      *(out++) = c ^ ctx->EKi.c[n];
+      ctx->Xi.c[n] ^= c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    size_t j = GHASH_CHUNK;
+
+    GHASH(ctx, in, GHASH_CHUNK);
+    while (j) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      j -= 16;
+    }
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    GHASH(ctx, in, len_blocks);
+    while (len >= 16) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      len -= 16;
+    }
+  }
+  if (len) {
+    (*block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      uint8_t c = in[n];
+      ctx->Xi.c[n] ^= c;
+      out[n] = c ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                const uint8_t *in, uint8_t *out, size_t len,
+                                ctr128_f stream) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to encrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(out++) = *(in++) ^ ctx->EKi.c[n];
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+#if defined(AESNI_GCM)
+  // Check |len| to work around a C language bug. See https://crbug.com/1019588.
+  if (ctx->gcm_key.use_aesni_gcm_crypt && len > 0) {
+    // |aesni_gcm_encrypt| may not process all the input given to it. It may
+    // not process *any* of its input if it is deemed too small.
+    size_t bulk = aesni_gcm_encrypt(in, out, len, key, ctx->Yi.c, ctx->Xi.u);
+    in += bulk;
+    out += bulk;
+    len -= bulk;
+  }
+#endif
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    (*stream)(in, out, GHASH_CHUNK / 16, key, ctx->Yi.c);
+    ctr += GHASH_CHUNK / 16;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    GHASH(ctx, out, GHASH_CHUNK);
+    out += GHASH_CHUNK;
+    in += GHASH_CHUNK;
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    size_t j = len_blocks / 16;
+
+    (*stream)(in, out, j, key, ctx->Yi.c);
+    ctr += (unsigned int)j;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    in += len_blocks;
+    len -= len_blocks;
+    GHASH(ctx, out, len_blocks);
+    out += len_blocks;
+  }
+  if (len) {
+    (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      ctx->Xi.c[n] ^= out[n] = in[n] ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                const uint8_t *in, uint8_t *out, size_t len,
+                                ctr128_f stream) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to decrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      uint8_t c = *(in++);
+      *(out++) = c ^ ctx->EKi.c[n];
+      ctx->Xi.c[n] ^= c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+#if defined(AESNI_GCM)
+  // Check |len| to work around a C language bug. See https://crbug.com/1019588.
+  if (ctx->gcm_key.use_aesni_gcm_crypt && len > 0) {
+    // |aesni_gcm_decrypt| may not process all the input given to it. It may
+    // not process *any* of its input if it is deemed too small.
+    size_t bulk = aesni_gcm_decrypt(in, out, len, key, ctx->Yi.c, ctx->Xi.u);
+    in += bulk;
+    out += bulk;
+    len -= bulk;
+  }
+#endif
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    GHASH(ctx, in, GHASH_CHUNK);
+    (*stream)(in, out, GHASH_CHUNK / 16, key, ctx->Yi.c);
+    ctr += GHASH_CHUNK / 16;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    out += GHASH_CHUNK;
+    in += GHASH_CHUNK;
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    size_t j = len_blocks / 16;
+
+    GHASH(ctx, in, len_blocks);
+    (*stream)(in, out, j, key, ctx->Yi.c);
+    ctr += (unsigned int)j;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    out += len_blocks;
+    in += len_blocks;
+    len -= len_blocks;
+  }
+  if (len) {
+    (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      uint8_t c = in[n];
+      ctx->Xi.c[n] ^= c;
+      out[n] = c ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const uint8_t *tag, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+#endif
+
+  if (ctx->mres || ctx->ares) {
+    GCM_MUL(ctx, Xi);
+  }
+
+  ctx->Xi.u[0] ^= CRYPTO_bswap8(ctx->len.u[0] << 3);
+  ctx->Xi.u[1] ^= CRYPTO_bswap8(ctx->len.u[1] << 3);
+  GCM_MUL(ctx, Xi);
+
+  ctx->Xi.u[0] ^= ctx->EK0.u[0];
+  ctx->Xi.u[1] ^= ctx->EK0.u[1];
+
+  if (tag && len <= sizeof(ctx->Xi)) {
+    return CRYPTO_memcmp(ctx->Xi.c, tag, len) == 0;
+  } else {
+    return 0;
+  }
+}
+
+void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, unsigned char *tag, size_t len) {
+  CRYPTO_gcm128_finish(ctx, NULL, 0);
+  OPENSSL_memcpy(tag, ctx->Xi.c,
+                 len <= sizeof(ctx->Xi.c) ? len : sizeof(ctx->Xi.c));
+}
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+int crypto_gcm_clmul_enabled(void) {
+#if defined(GHASH_ASM_X86) || defined(GHASH_ASM_X86_64)
+  const uint32_t *ia32cap = OPENSSL_ia32cap_get();
+  return (ia32cap[0] & (1 << 24)) &&  // check FXSR bit
+         (ia32cap[1] & (1 << 1));     // check PCLMULQDQ bit
+#else
+  return 0;
+#endif
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c.grpc_back
new file mode 100644
index 0000000..14fff86
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm.c.grpc_back	
@@ -0,0 +1,729 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/base.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/cpu.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// kSizeTWithoutLower4Bits is a mask that can be used to zero the lower four
+// bits of a |size_t|.
+static const size_t kSizeTWithoutLower4Bits = (size_t) -16;
+
+
+#define GCM_MUL(ctx, Xi) gcm_gmult_nohw((ctx)->Xi.u, (ctx)->gcm_key.Htable)
+#define GHASH(ctx, in, len) \
+  gcm_ghash_nohw((ctx)->Xi.u, (ctx)->gcm_key.Htable, in, len)
+// GHASH_CHUNK is "stride parameter" missioned to mitigate cache
+// trashing effect. In other words idea is to hash data while it's
+// still in L1 cache after encryption pass...
+#define GHASH_CHUNK (3 * 1024)
+
+#if defined(GHASH_ASM_X86_64) || defined(GHASH_ASM_X86)
+static inline void gcm_reduce_1bit(u128 *V) {
+  if (sizeof(size_t) == 8) {
+    uint64_t T = UINT64_C(0xe100000000000000) & (0 - (V->hi & 1));
+    V->hi = (V->lo << 63) | (V->hi >> 1);
+    V->lo = (V->lo >> 1) ^ T;
+  } else {
+    uint32_t T = 0xe1000000U & (0 - (uint32_t)(V->hi & 1));
+    V->hi = (V->lo << 63) | (V->hi >> 1);
+    V->lo = (V->lo >> 1) ^ ((uint64_t)T << 32);
+  }
+}
+
+void gcm_init_ssse3(u128 Htable[16], const uint64_t H[2]) {
+  Htable[0].hi = 0;
+  Htable[0].lo = 0;
+  u128 V;
+  V.hi = H[1];
+  V.lo = H[0];
+
+  Htable[8] = V;
+  gcm_reduce_1bit(&V);
+  Htable[4] = V;
+  gcm_reduce_1bit(&V);
+  Htable[2] = V;
+  gcm_reduce_1bit(&V);
+  Htable[1] = V;
+  Htable[3].hi = V.hi ^ Htable[2].hi, Htable[3].lo = V.lo ^ Htable[2].lo;
+  V = Htable[4];
+  Htable[5].hi = V.hi ^ Htable[1].hi, Htable[5].lo = V.lo ^ Htable[1].lo;
+  Htable[6].hi = V.hi ^ Htable[2].hi, Htable[6].lo = V.lo ^ Htable[2].lo;
+  Htable[7].hi = V.hi ^ Htable[3].hi, Htable[7].lo = V.lo ^ Htable[3].lo;
+  V = Htable[8];
+  Htable[9].hi = V.hi ^ Htable[1].hi, Htable[9].lo = V.lo ^ Htable[1].lo;
+  Htable[10].hi = V.hi ^ Htable[2].hi, Htable[10].lo = V.lo ^ Htable[2].lo;
+  Htable[11].hi = V.hi ^ Htable[3].hi, Htable[11].lo = V.lo ^ Htable[3].lo;
+  Htable[12].hi = V.hi ^ Htable[4].hi, Htable[12].lo = V.lo ^ Htable[4].lo;
+  Htable[13].hi = V.hi ^ Htable[5].hi, Htable[13].lo = V.lo ^ Htable[5].lo;
+  Htable[14].hi = V.hi ^ Htable[6].hi, Htable[14].lo = V.lo ^ Htable[6].lo;
+  Htable[15].hi = V.hi ^ Htable[7].hi, Htable[15].lo = V.lo ^ Htable[7].lo;
+
+  // Treat |Htable| as a 16x16 byte table and transpose it. Thus, Htable[i]
+  // contains the i'th byte of j*H for all j.
+  uint8_t *Hbytes = (uint8_t *)Htable;
+  for (int i = 0; i < 16; i++) {
+    for (int j = 0; j < i; j++) {
+      uint8_t tmp = Hbytes[16*i + j];
+      Hbytes[16*i + j] = Hbytes[16*j + i];
+      Hbytes[16*j + i] = tmp;
+    }
+  }
+}
+#endif  // GHASH_ASM_X86_64 || GHASH_ASM_X86
+
+#ifdef GCM_FUNCREF
+#undef GCM_MUL
+#define GCM_MUL(ctx, Xi) (*gcm_gmult_p)((ctx)->Xi.u, (ctx)->gcm_key.Htable)
+#undef GHASH
+#define GHASH(ctx, in, len) \
+  (*gcm_ghash_p)((ctx)->Xi.u, (ctx)->gcm_key.Htable, in, len)
+#endif  // GCM_FUNCREF
+
+void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash,
+                       u128 *out_key, u128 out_table[16], int *out_is_avx,
+                       const uint8_t gcm_key[16]) {
+  *out_is_avx = 0;
+
+  union {
+    uint64_t u[2];
+    uint8_t c[16];
+  } H;
+
+  OPENSSL_memcpy(H.c, gcm_key, 16);
+
+  // H is stored in host byte order
+  H.u[0] = CRYPTO_bswap8(H.u[0]);
+  H.u[1] = CRYPTO_bswap8(H.u[1]);
+
+  OPENSSL_memcpy(out_key, H.c, 16);
+
+#if defined(GHASH_ASM_X86_64)
+  if (crypto_gcm_clmul_enabled()) {
+    if (((OPENSSL_ia32cap_get()[1] >> 22) & 0x41) == 0x41) {  // AVX+MOVBE
+      gcm_init_avx(out_table, H.u);
+      *out_mult = gcm_gmult_avx;
+      *out_hash = gcm_ghash_avx;
+      *out_is_avx = 1;
+      return;
+    }
+    gcm_init_clmul(out_table, H.u);
+    *out_mult = gcm_gmult_clmul;
+    *out_hash = gcm_ghash_clmul;
+    return;
+  }
+  if (gcm_ssse3_capable()) {
+    gcm_init_ssse3(out_table, H.u);
+    *out_mult = gcm_gmult_ssse3;
+    *out_hash = gcm_ghash_ssse3;
+    return;
+  }
+#elif defined(GHASH_ASM_X86)
+  if (crypto_gcm_clmul_enabled()) {
+    gcm_init_clmul(out_table, H.u);
+    *out_mult = gcm_gmult_clmul;
+    *out_hash = gcm_ghash_clmul;
+    return;
+  }
+  if (gcm_ssse3_capable()) {
+    gcm_init_ssse3(out_table, H.u);
+    *out_mult = gcm_gmult_ssse3;
+    *out_hash = gcm_ghash_ssse3;
+    return;
+  }
+#elif defined(GHASH_ASM_ARM)
+  if (gcm_pmull_capable()) {
+    gcm_init_v8(out_table, H.u);
+    *out_mult = gcm_gmult_v8;
+    *out_hash = gcm_ghash_v8;
+    return;
+  }
+
+  if (gcm_neon_capable()) {
+    gcm_init_neon(out_table, H.u);
+    *out_mult = gcm_gmult_neon;
+    *out_hash = gcm_ghash_neon;
+    return;
+  }
+#elif defined(GHASH_ASM_PPC64LE)
+  if (CRYPTO_is_PPC64LE_vcrypto_capable()) {
+    gcm_init_p8(out_table, H.u);
+    *out_mult = gcm_gmult_p8;
+    *out_hash = gcm_ghash_p8;
+    return;
+  }
+#endif
+
+  gcm_init_nohw(out_table, H.u);
+  *out_mult = gcm_gmult_nohw;
+  *out_hash = gcm_ghash_nohw;
+}
+
+void CRYPTO_gcm128_init_key(GCM128_KEY *gcm_key, const AES_KEY *aes_key,
+                            block128_f block, int block_is_hwaes) {
+  OPENSSL_memset(gcm_key, 0, sizeof(*gcm_key));
+  gcm_key->block = block;
+
+  uint8_t ghash_key[16];
+  OPENSSL_memset(ghash_key, 0, sizeof(ghash_key));
+  (*block)(ghash_key, ghash_key, aes_key);
+
+  int is_avx;
+  CRYPTO_ghash_init(&gcm_key->gmult, &gcm_key->ghash, &gcm_key->H,
+                    gcm_key->Htable, &is_avx, ghash_key);
+
+  gcm_key->use_aesni_gcm_crypt = (is_avx && block_is_hwaes) ? 1 : 0;
+}
+
+void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                         const uint8_t *iv, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+#endif
+
+  ctx->Yi.u[0] = 0;
+  ctx->Yi.u[1] = 0;
+  ctx->Xi.u[0] = 0;
+  ctx->Xi.u[1] = 0;
+  ctx->len.u[0] = 0;  // AAD length
+  ctx->len.u[1] = 0;  // message length
+  ctx->ares = 0;
+  ctx->mres = 0;
+
+  uint32_t ctr;
+  if (len == 12) {
+    OPENSSL_memcpy(ctx->Yi.c, iv, 12);
+    ctx->Yi.c[15] = 1;
+    ctr = 1;
+  } else {
+    uint64_t len0 = len;
+
+    while (len >= 16) {
+      for (size_t i = 0; i < 16; ++i) {
+        ctx->Yi.c[i] ^= iv[i];
+      }
+      GCM_MUL(ctx, Yi);
+      iv += 16;
+      len -= 16;
+    }
+    if (len) {
+      for (size_t i = 0; i < len; ++i) {
+        ctx->Yi.c[i] ^= iv[i];
+      }
+      GCM_MUL(ctx, Yi);
+    }
+    len0 <<= 3;
+    ctx->Yi.u[1] ^= CRYPTO_bswap8(len0);
+
+    GCM_MUL(ctx, Yi);
+    ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  }
+
+  (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EK0.c, key);
+  ++ctr;
+  ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+}
+
+int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const uint8_t *aad, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  if (ctx->len.u[1]) {
+    return 0;
+  }
+
+  uint64_t alen = ctx->len.u[0] + len;
+  if (alen > (UINT64_C(1) << 61) || (sizeof(len) == 8 && alen < len)) {
+    return 0;
+  }
+  ctx->len.u[0] = alen;
+
+  unsigned n = ctx->ares;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(aad++);
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->ares = n;
+      return 1;
+    }
+  }
+
+  // Process a whole number of blocks.
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    GHASH(ctx, aad, len_blocks);
+    aad += len_blocks;
+    len -= len_blocks;
+  }
+
+  // Process the remainder.
+  if (len != 0) {
+    n = (unsigned int)len;
+    for (size_t i = 0; i < len; ++i) {
+      ctx->Xi.c[i] ^= aad[i];
+    }
+  }
+
+  ctx->ares = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                          const uint8_t *in, uint8_t *out, size_t len) {
+  block128_f block = ctx->gcm_key.block;
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to encrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(out++) = *(in++) ^ ctx->EKi.c[n];
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    size_t j = GHASH_CHUNK;
+
+    while (j) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      j -= 16;
+    }
+    GHASH(ctx, out - GHASH_CHUNK, GHASH_CHUNK);
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    while (len >= 16) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      len -= 16;
+    }
+    GHASH(ctx, out - len_blocks, len_blocks);
+  }
+  if (len) {
+    (*block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      ctx->Xi.c[n] ^= out[n] = in[n] ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                          const unsigned char *in, unsigned char *out,
+                          size_t len) {
+  block128_f block = ctx->gcm_key.block;
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to decrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      uint8_t c = *(in++);
+      *(out++) = c ^ ctx->EKi.c[n];
+      ctx->Xi.c[n] ^= c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    size_t j = GHASH_CHUNK;
+
+    GHASH(ctx, in, GHASH_CHUNK);
+    while (j) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      j -= 16;
+    }
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    GHASH(ctx, in, len_blocks);
+    while (len >= 16) {
+      (*block)(ctx->Yi.c, ctx->EKi.c, key);
+      ++ctr;
+      ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+      for (size_t i = 0; i < 16; i += sizeof(size_t)) {
+        store_word_le(out + i,
+                      load_word_le(in + i) ^ ctx->EKi.t[i / sizeof(size_t)]);
+      }
+      out += 16;
+      in += 16;
+      len -= 16;
+    }
+  }
+  if (len) {
+    (*block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      uint8_t c = in[n];
+      ctx->Xi.c[n] ^= c;
+      out[n] = c ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                const uint8_t *in, uint8_t *out, size_t len,
+                                ctr128_f stream) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to encrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      ctx->Xi.c[n] ^= *(out++) = *(in++) ^ ctx->EKi.c[n];
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+#if defined(AESNI_GCM)
+  // Check |len| to work around a C language bug. See https://crbug.com/1019588.
+  if (ctx->gcm_key.use_aesni_gcm_crypt && len > 0) {
+    // |aesni_gcm_encrypt| may not process all the input given to it. It may
+    // not process *any* of its input if it is deemed too small.
+    size_t bulk = aesni_gcm_encrypt(in, out, len, key, ctx->Yi.c, ctx->Xi.u);
+    in += bulk;
+    out += bulk;
+    len -= bulk;
+  }
+#endif
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    (*stream)(in, out, GHASH_CHUNK / 16, key, ctx->Yi.c);
+    ctr += GHASH_CHUNK / 16;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    GHASH(ctx, out, GHASH_CHUNK);
+    out += GHASH_CHUNK;
+    in += GHASH_CHUNK;
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    size_t j = len_blocks / 16;
+
+    (*stream)(in, out, j, key, ctx->Yi.c);
+    ctr += (unsigned int)j;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    in += len_blocks;
+    len -= len_blocks;
+    GHASH(ctx, out, len_blocks);
+    out += len_blocks;
+  }
+  if (len) {
+    (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      ctx->Xi.c[n] ^= out[n] = in[n] ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                const uint8_t *in, uint8_t *out, size_t len,
+                                ctr128_f stream) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+  void (*gcm_ghash_p)(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                      size_t len) = ctx->gcm_key.ghash;
+#endif
+
+  uint64_t mlen = ctx->len.u[1] + len;
+  if (mlen > ((UINT64_C(1) << 36) - 32) ||
+      (sizeof(len) == 8 && mlen < len)) {
+    return 0;
+  }
+  ctx->len.u[1] = mlen;
+
+  if (ctx->ares) {
+    // First call to decrypt finalizes GHASH(AAD)
+    GCM_MUL(ctx, Xi);
+    ctx->ares = 0;
+  }
+
+  unsigned n = ctx->mres;
+  if (n) {
+    while (n && len) {
+      uint8_t c = *(in++);
+      *(out++) = c ^ ctx->EKi.c[n];
+      ctx->Xi.c[n] ^= c;
+      --len;
+      n = (n + 1) % 16;
+    }
+    if (n == 0) {
+      GCM_MUL(ctx, Xi);
+    } else {
+      ctx->mres = n;
+      return 1;
+    }
+  }
+
+#if defined(AESNI_GCM)
+  // Check |len| to work around a C language bug. See https://crbug.com/1019588.
+  if (ctx->gcm_key.use_aesni_gcm_crypt && len > 0) {
+    // |aesni_gcm_decrypt| may not process all the input given to it. It may
+    // not process *any* of its input if it is deemed too small.
+    size_t bulk = aesni_gcm_decrypt(in, out, len, key, ctx->Yi.c, ctx->Xi.u);
+    in += bulk;
+    out += bulk;
+    len -= bulk;
+  }
+#endif
+
+  uint32_t ctr = CRYPTO_bswap4(ctx->Yi.d[3]);
+  while (len >= GHASH_CHUNK) {
+    GHASH(ctx, in, GHASH_CHUNK);
+    (*stream)(in, out, GHASH_CHUNK / 16, key, ctx->Yi.c);
+    ctr += GHASH_CHUNK / 16;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    out += GHASH_CHUNK;
+    in += GHASH_CHUNK;
+    len -= GHASH_CHUNK;
+  }
+  size_t len_blocks = len & kSizeTWithoutLower4Bits;
+  if (len_blocks != 0) {
+    size_t j = len_blocks / 16;
+
+    GHASH(ctx, in, len_blocks);
+    (*stream)(in, out, j, key, ctx->Yi.c);
+    ctr += (unsigned int)j;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    out += len_blocks;
+    in += len_blocks;
+    len -= len_blocks;
+  }
+  if (len) {
+    (*ctx->gcm_key.block)(ctx->Yi.c, ctx->EKi.c, key);
+    ++ctr;
+    ctx->Yi.d[3] = CRYPTO_bswap4(ctr);
+    while (len--) {
+      uint8_t c = in[n];
+      ctx->Xi.c[n] ^= c;
+      out[n] = c ^ ctx->EKi.c[n];
+      ++n;
+    }
+  }
+
+  ctx->mres = n;
+  return 1;
+}
+
+int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const uint8_t *tag, size_t len) {
+#ifdef GCM_FUNCREF
+  void (*gcm_gmult_p)(uint64_t Xi[2], const u128 Htable[16]) =
+      ctx->gcm_key.gmult;
+#endif
+
+  if (ctx->mres || ctx->ares) {
+    GCM_MUL(ctx, Xi);
+  }
+
+  ctx->Xi.u[0] ^= CRYPTO_bswap8(ctx->len.u[0] << 3);
+  ctx->Xi.u[1] ^= CRYPTO_bswap8(ctx->len.u[1] << 3);
+  GCM_MUL(ctx, Xi);
+
+  ctx->Xi.u[0] ^= ctx->EK0.u[0];
+  ctx->Xi.u[1] ^= ctx->EK0.u[1];
+
+  if (tag && len <= sizeof(ctx->Xi)) {
+    return CRYPTO_memcmp(ctx->Xi.c, tag, len) == 0;
+  } else {
+    return 0;
+  }
+}
+
+void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, unsigned char *tag, size_t len) {
+  CRYPTO_gcm128_finish(ctx, NULL, 0);
+  OPENSSL_memcpy(tag, ctx->Xi.c,
+                 len <= sizeof(ctx->Xi.c) ? len : sizeof(ctx->Xi.c));
+}
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+int crypto_gcm_clmul_enabled(void) {
+#if defined(GHASH_ASM_X86) || defined(GHASH_ASM_X86_64)
+  const uint32_t *ia32cap = OPENSSL_ia32cap_get();
+  return (ia32cap[0] & (1 << 24)) &&  // check FXSR bit
+         (ia32cap[1] & (1 << 1));     // check PCLMULQDQ bit
+#else
+  return 0;
+#endif
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c
new file mode 100644
index 0000000..9eefd47
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c	
@@ -0,0 +1,304 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/base.h>
+
+#include "../../internal.h"
+#include "internal.h"
+
+#if !defined(BORINGSSL_HAS_UINT128) && defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+
+// This file contains a constant-time implementation of GHASH based on the notes
+// in https://bearssl.org/constanttime.html#ghash-for-gcm and the reduction
+// algorithm described in
+// https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf.
+//
+// Unlike the BearSSL notes, we use uint128_t in the 64-bit implementation. Our
+// primary compilers (clang, clang-cl, and gcc) all support it. MSVC will run
+// the 32-bit implementation, but we can use its intrinsics if necessary.
+
+#if defined(BORINGSSL_HAS_UINT128)
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  // One term every four bits means the largest term is 64/4 = 16, which barely
+  // overflows into the next term. Using one term every five bits would cost 25
+  // multiplications instead of 16. It is faster to mask off the bottom four
+  // bits of |a|, giving a largest term of 60/4 = 15, and apply the bottom bits
+  // separately.
+  uint64_t a0 = a & UINT64_C(0x1111111111111110);
+  uint64_t a1 = a & UINT64_C(0x2222222222222220);
+  uint64_t a2 = a & UINT64_C(0x4444444444444440);
+  uint64_t a3 = a & UINT64_C(0x8888888888888880);
+
+  uint64_t b0 = b & UINT64_C(0x1111111111111111);
+  uint64_t b1 = b & UINT64_C(0x2222222222222222);
+  uint64_t b2 = b & UINT64_C(0x4444444444444444);
+  uint64_t b3 = b & UINT64_C(0x8888888888888888);
+
+  uint128_t c0 = (a0 * (uint128_t)b0) ^ (a1 * (uint128_t)b3) ^
+                 (a2 * (uint128_t)b2) ^ (a3 * (uint128_t)b1);
+  uint128_t c1 = (a0 * (uint128_t)b1) ^ (a1 * (uint128_t)b0) ^
+                 (a2 * (uint128_t)b3) ^ (a3 * (uint128_t)b2);
+  uint128_t c2 = (a0 * (uint128_t)b2) ^ (a1 * (uint128_t)b1) ^
+                 (a2 * (uint128_t)b0) ^ (a3 * (uint128_t)b3);
+  uint128_t c3 = (a0 * (uint128_t)b3) ^ (a1 * (uint128_t)b2) ^
+                 (a2 * (uint128_t)b1) ^ (a3 * (uint128_t)b0);
+
+  // Multiply the bottom four bits of |a| with |b|.
+  uint64_t a0_mask = UINT64_C(0) - (a & 1);
+  uint64_t a1_mask = UINT64_C(0) - ((a >> 1) & 1);
+  uint64_t a2_mask = UINT64_C(0) - ((a >> 2) & 1);
+  uint64_t a3_mask = UINT64_C(0) - ((a >> 3) & 1);
+  uint128_t extra = (a0_mask & b) ^ ((uint128_t)(a1_mask & b) << 1) ^
+                    ((uint128_t)(a2_mask & b) << 2) ^
+                    ((uint128_t)(a3_mask & b) << 3);
+
+  *out_lo = (((uint64_t)c0) & UINT64_C(0x1111111111111111)) ^
+            (((uint64_t)c1) & UINT64_C(0x2222222222222222)) ^
+            (((uint64_t)c2) & UINT64_C(0x4444444444444444)) ^
+            (((uint64_t)c3) & UINT64_C(0x8888888888888888)) ^ ((uint64_t)extra);
+  *out_hi = (((uint64_t)(c0 >> 64)) & UINT64_C(0x1111111111111111)) ^
+            (((uint64_t)(c1 >> 64)) & UINT64_C(0x2222222222222222)) ^
+            (((uint64_t)(c2 >> 64)) & UINT64_C(0x4444444444444444)) ^
+            (((uint64_t)(c3 >> 64)) & UINT64_C(0x8888888888888888)) ^
+            ((uint64_t)(extra >> 64));
+}
+
+#elif defined(OPENSSL_SSE2)
+
+static __m128i gcm_mul32_nohw(uint32_t a, uint32_t b) {
+  // One term every four bits means the largest term is 32/4 = 8, which does not
+  // overflow into the next term.
+  __m128i aa = _mm_setr_epi32(a, 0, a, 0);
+  __m128i bb = _mm_setr_epi32(b, 0, b, 0);
+
+  __m128i a0a0 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x11111111, 0, 0x11111111, 0));
+  __m128i a2a2 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x44444444, 0, 0x44444444, 0));
+  __m128i b0b1 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x11111111, 0, 0x22222222, 0));
+  __m128i b2b3 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x44444444, 0, 0x88888888, 0));
+
+  __m128i c0c1 =
+      _mm_xor_si128(_mm_mul_epu32(a0a0, b0b1), _mm_mul_epu32(a2a2, b2b3));
+  __m128i c2c3 =
+      _mm_xor_si128(_mm_mul_epu32(a2a2, b0b1), _mm_mul_epu32(a0a0, b2b3));
+
+  __m128i a1a1 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x22222222, 0, 0x22222222, 0));
+  __m128i a3a3 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x88888888, 0, 0x88888888, 0));
+  __m128i b3b0 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x88888888, 0, 0x11111111, 0));
+  __m128i b1b2 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x22222222, 0, 0x44444444, 0));
+
+  c0c1 = _mm_xor_si128(c0c1, _mm_mul_epu32(a1a1, b3b0));
+  c0c1 = _mm_xor_si128(c0c1, _mm_mul_epu32(a3a3, b1b2));
+  c2c3 = _mm_xor_si128(c2c3, _mm_mul_epu32(a3a3, b3b0));
+  c2c3 = _mm_xor_si128(c2c3, _mm_mul_epu32(a1a1, b1b2));
+
+  c0c1 = _mm_and_si128(
+      c0c1, _mm_setr_epi32(0x11111111, 0x11111111, 0x22222222, 0x22222222));
+  c2c3 = _mm_and_si128(
+      c2c3, _mm_setr_epi32(0x44444444, 0x44444444, 0x88888888, 0x88888888));
+
+  c0c1 = _mm_xor_si128(c0c1, c2c3);
+  // c0 ^= c1
+  c0c1 = _mm_xor_si128(c0c1, _mm_srli_si128(c0c1, 8));
+  return c0c1;
+}
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  uint32_t a0 = a & 0xffffffff;
+  uint32_t a1 = a >> 32;
+  uint32_t b0 = b & 0xffffffff;
+  uint32_t b1 = b >> 32;
+  // Karatsuba multiplication.
+  __m128i lo = gcm_mul32_nohw(a0, b0);
+  __m128i hi = gcm_mul32_nohw(a1, b1);
+  __m128i mid = gcm_mul32_nohw(a0 ^ a1, b0 ^ b1);
+  mid = _mm_xor_si128(mid, lo);
+  mid = _mm_xor_si128(mid, hi);
+  __m128i ret = _mm_unpacklo_epi64(lo, hi);
+  mid = _mm_slli_si128(mid, 4);
+  mid = _mm_and_si128(mid, _mm_setr_epi32(0, 0xffffffff, 0xffffffff, 0));
+  ret = _mm_xor_si128(ret, mid);
+  memcpy(out_lo, &ret, 8);
+  memcpy(out_hi, ((char*)&ret) + 8, 8);
+}
+
+#else  // !BORINGSSL_HAS_UINT128 && !OPENSSL_SSE2
+
+static uint64_t gcm_mul32_nohw(uint32_t a, uint32_t b) {
+  // One term every four bits means the largest term is 32/4 = 8, which does not
+  // overflow into the next term.
+  uint32_t a0 = a & 0x11111111;
+  uint32_t a1 = a & 0x22222222;
+  uint32_t a2 = a & 0x44444444;
+  uint32_t a3 = a & 0x88888888;
+
+  uint32_t b0 = b & 0x11111111;
+  uint32_t b1 = b & 0x22222222;
+  uint32_t b2 = b & 0x44444444;
+  uint32_t b3 = b & 0x88888888;
+
+  uint64_t c0 = (a0 * (uint64_t)b0) ^ (a1 * (uint64_t)b3) ^
+                (a2 * (uint64_t)b2) ^ (a3 * (uint64_t)b1);
+  uint64_t c1 = (a0 * (uint64_t)b1) ^ (a1 * (uint64_t)b0) ^
+                (a2 * (uint64_t)b3) ^ (a3 * (uint64_t)b2);
+  uint64_t c2 = (a0 * (uint64_t)b2) ^ (a1 * (uint64_t)b1) ^
+                (a2 * (uint64_t)b0) ^ (a3 * (uint64_t)b3);
+  uint64_t c3 = (a0 * (uint64_t)b3) ^ (a1 * (uint64_t)b2) ^
+                (a2 * (uint64_t)b1) ^ (a3 * (uint64_t)b0);
+
+  return (c0 & UINT64_C(0x1111111111111111)) |
+         (c1 & UINT64_C(0x2222222222222222)) |
+         (c2 & UINT64_C(0x4444444444444444)) |
+         (c3 & UINT64_C(0x8888888888888888));
+}
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  uint32_t a0 = a & 0xffffffff;
+  uint32_t a1 = a >> 32;
+  uint32_t b0 = b & 0xffffffff;
+  uint32_t b1 = b >> 32;
+  // Karatsuba multiplication.
+  uint64_t lo = gcm_mul32_nohw(a0, b0);
+  uint64_t hi = gcm_mul32_nohw(a1, b1);
+  uint64_t mid = gcm_mul32_nohw(a0 ^ a1, b0 ^ b1) ^ lo ^ hi;
+  *out_lo = lo ^ (mid << 32);
+  *out_hi = hi ^ (mid >> 32);
+}
+
+#endif  // BORINGSSL_HAS_UINT128
+
+void gcm_init_nohw(u128 Htable[16], const uint64_t Xi[2]) {
+  // We implement GHASH in terms of POLYVAL, as described in RFC8452. This
+  // avoids a shift by 1 in the multiplication, needed to account for bit
+  // reversal losing a bit after multiplication, that is,
+  // rev128(X) * rev128(Y) = rev255(X*Y).
+  //
+  // Per Appendix A, we run mulX_POLYVAL. Note this is the same transformation
+  // applied by |gcm_init_clmul|, etc. Note |Xi| has already been byteswapped.
+  //
+  // See also slide 16 of
+  // https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf
+  Htable[0].lo = Xi[1];
+  Htable[0].hi = Xi[0];
+
+  uint64_t carry = Htable[0].hi >> 63;
+  carry = 0u - carry;
+
+  Htable[0].hi <<= 1;
+  Htable[0].hi |= Htable[0].lo >> 63;
+  Htable[0].lo <<= 1;
+
+  // The irreducible polynomial is 1 + x^121 + x^126 + x^127 + x^128, so we
+  // conditionally add 0xc200...0001.
+  Htable[0].lo ^= carry & 1;
+  Htable[0].hi ^= carry & UINT64_C(0xc200000000000000);
+
+  // This implementation does not use the rest of |Htable|.
+}
+
+static void gcm_polyval_nohw(uint64_t Xi[2], const u128 *H) {
+  // Karatsuba multiplication. The product of |Xi| and |H| is stored in |r0|
+  // through |r3|. Note there is no byte or bit reversal because we are
+  // evaluating POLYVAL.
+  uint64_t r0, r1;
+  gcm_mul64_nohw(&r0, &r1, Xi[0], H->lo);
+  uint64_t r2, r3;
+  gcm_mul64_nohw(&r2, &r3, Xi[1], H->hi);
+  uint64_t mid0, mid1;
+  gcm_mul64_nohw(&mid0, &mid1, Xi[0] ^ Xi[1], H->hi ^ H->lo);
+  mid0 ^= r0 ^ r2;
+  mid1 ^= r1 ^ r3;
+  r2 ^= mid1;
+  r1 ^= mid0;
+
+  // Now we multiply our 256-bit result by x^-128 and reduce. |r2| and
+  // |r3| shifts into position and we must multiply |r0| and |r1| by x^-128. We
+  // have:
+  //
+  //       1 = x^121 + x^126 + x^127 + x^128
+  //  x^-128 = x^-7 + x^-2 + x^-1 + 1
+  //
+  // This is the GHASH reduction step, but with bits flowing in reverse.
+
+  // The x^-7, x^-2, and x^-1 terms shift bits past x^0, which would require
+  // another reduction steps. Instead, we gather the excess bits, incorporate
+  // them into |r0| and |r1| and reduce once. See slides 17-19
+  // of https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf.
+  r1 ^= (r0 << 63) ^ (r0 << 62) ^ (r0 << 57);
+
+  // 1
+  r2 ^= r0;
+  r3 ^= r1;
+
+  // x^-1
+  r2 ^= r0 >> 1;
+  r2 ^= r1 << 63;
+  r3 ^= r1 >> 1;
+
+  // x^-2
+  r2 ^= r0 >> 2;
+  r2 ^= r1 << 62;
+  r3 ^= r1 >> 2;
+
+  // x^-7
+  r2 ^= r0 >> 7;
+  r2 ^= r1 << 57;
+  r3 ^= r1 >> 7;
+
+  Xi[0] = r2;
+  Xi[1] = r3;
+}
+
+void gcm_gmult_nohw(uint64_t Xi[2], const u128 Htable[16]) {
+  uint64_t swapped[2];
+  swapped[0] = CRYPTO_bswap8(Xi[1]);
+  swapped[1] = CRYPTO_bswap8(Xi[0]);
+  gcm_polyval_nohw(swapped, &Htable[0]);
+  Xi[0] = CRYPTO_bswap8(swapped[1]);
+  Xi[1] = CRYPTO_bswap8(swapped[0]);
+}
+
+void gcm_ghash_nohw(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len) {
+  uint64_t swapped[2];
+  swapped[0] = CRYPTO_bswap8(Xi[1]);
+  swapped[1] = CRYPTO_bswap8(Xi[0]);
+
+  while (len >= 16) {
+    uint64_t block[2];
+    OPENSSL_memcpy(block, inp, 16);
+    swapped[0] ^= CRYPTO_bswap8(block[1]);
+    swapped[1] ^= CRYPTO_bswap8(block[0]);
+    gcm_polyval_nohw(swapped, &Htable[0]);
+    inp += 16;
+    len -= 16;
+  }
+
+  Xi[0] = CRYPTO_bswap8(swapped[1]);
+  Xi[1] = CRYPTO_bswap8(swapped[0]);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c.grpc_back
new file mode 100644
index 0000000..f8618b8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/gcm_nohw.c.grpc_back	
@@ -0,0 +1,304 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/base.h>
+
+#include "../../internal.h"
+#include "internal.h"
+
+#if !defined(BORINGSSL_HAS_UINT128) && defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+
+// This file contains a constant-time implementation of GHASH based on the notes
+// in https://bearssl.org/constanttime.html#ghash-for-gcm and the reduction
+// algorithm described in
+// https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf.
+//
+// Unlike the BearSSL notes, we use uint128_t in the 64-bit implementation. Our
+// primary compilers (clang, clang-cl, and gcc) all support it. MSVC will run
+// the 32-bit implementation, but we can use its intrinsics if necessary.
+
+#if defined(BORINGSSL_HAS_UINT128)
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  // One term every four bits means the largest term is 64/4 = 16, which barely
+  // overflows into the next term. Using one term every five bits would cost 25
+  // multiplications instead of 16. It is faster to mask off the bottom four
+  // bits of |a|, giving a largest term of 60/4 = 15, and apply the bottom bits
+  // separately.
+  uint64_t a0 = a & UINT64_C(0x1111111111111110);
+  uint64_t a1 = a & UINT64_C(0x2222222222222220);
+  uint64_t a2 = a & UINT64_C(0x4444444444444440);
+  uint64_t a3 = a & UINT64_C(0x8888888888888880);
+
+  uint64_t b0 = b & UINT64_C(0x1111111111111111);
+  uint64_t b1 = b & UINT64_C(0x2222222222222222);
+  uint64_t b2 = b & UINT64_C(0x4444444444444444);
+  uint64_t b3 = b & UINT64_C(0x8888888888888888);
+
+  uint128_t c0 = (a0 * (uint128_t)b0) ^ (a1 * (uint128_t)b3) ^
+                 (a2 * (uint128_t)b2) ^ (a3 * (uint128_t)b1);
+  uint128_t c1 = (a0 * (uint128_t)b1) ^ (a1 * (uint128_t)b0) ^
+                 (a2 * (uint128_t)b3) ^ (a3 * (uint128_t)b2);
+  uint128_t c2 = (a0 * (uint128_t)b2) ^ (a1 * (uint128_t)b1) ^
+                 (a2 * (uint128_t)b0) ^ (a3 * (uint128_t)b3);
+  uint128_t c3 = (a0 * (uint128_t)b3) ^ (a1 * (uint128_t)b2) ^
+                 (a2 * (uint128_t)b1) ^ (a3 * (uint128_t)b0);
+
+  // Multiply the bottom four bits of |a| with |b|.
+  uint64_t a0_mask = UINT64_C(0) - (a & 1);
+  uint64_t a1_mask = UINT64_C(0) - ((a >> 1) & 1);
+  uint64_t a2_mask = UINT64_C(0) - ((a >> 2) & 1);
+  uint64_t a3_mask = UINT64_C(0) - ((a >> 3) & 1);
+  uint128_t extra = (a0_mask & b) ^ ((uint128_t)(a1_mask & b) << 1) ^
+                    ((uint128_t)(a2_mask & b) << 2) ^
+                    ((uint128_t)(a3_mask & b) << 3);
+
+  *out_lo = (((uint64_t)c0) & UINT64_C(0x1111111111111111)) ^
+            (((uint64_t)c1) & UINT64_C(0x2222222222222222)) ^
+            (((uint64_t)c2) & UINT64_C(0x4444444444444444)) ^
+            (((uint64_t)c3) & UINT64_C(0x8888888888888888)) ^ ((uint64_t)extra);
+  *out_hi = (((uint64_t)(c0 >> 64)) & UINT64_C(0x1111111111111111)) ^
+            (((uint64_t)(c1 >> 64)) & UINT64_C(0x2222222222222222)) ^
+            (((uint64_t)(c2 >> 64)) & UINT64_C(0x4444444444444444)) ^
+            (((uint64_t)(c3 >> 64)) & UINT64_C(0x8888888888888888)) ^
+            ((uint64_t)(extra >> 64));
+}
+
+#elif defined(OPENSSL_SSE2)
+
+static __m128i gcm_mul32_nohw(uint32_t a, uint32_t b) {
+  // One term every four bits means the largest term is 32/4 = 8, which does not
+  // overflow into the next term.
+  __m128i aa = _mm_setr_epi32(a, 0, a, 0);
+  __m128i bb = _mm_setr_epi32(b, 0, b, 0);
+
+  __m128i a0a0 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x11111111, 0, 0x11111111, 0));
+  __m128i a2a2 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x44444444, 0, 0x44444444, 0));
+  __m128i b0b1 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x11111111, 0, 0x22222222, 0));
+  __m128i b2b3 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x44444444, 0, 0x88888888, 0));
+
+  __m128i c0c1 =
+      _mm_xor_si128(_mm_mul_epu32(a0a0, b0b1), _mm_mul_epu32(a2a2, b2b3));
+  __m128i c2c3 =
+      _mm_xor_si128(_mm_mul_epu32(a2a2, b0b1), _mm_mul_epu32(a0a0, b2b3));
+
+  __m128i a1a1 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x22222222, 0, 0x22222222, 0));
+  __m128i a3a3 =
+      _mm_and_si128(aa, _mm_setr_epi32(0x88888888, 0, 0x88888888, 0));
+  __m128i b3b0 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x88888888, 0, 0x11111111, 0));
+  __m128i b1b2 =
+      _mm_and_si128(bb, _mm_setr_epi32(0x22222222, 0, 0x44444444, 0));
+
+  c0c1 = _mm_xor_si128(c0c1, _mm_mul_epu32(a1a1, b3b0));
+  c0c1 = _mm_xor_si128(c0c1, _mm_mul_epu32(a3a3, b1b2));
+  c2c3 = _mm_xor_si128(c2c3, _mm_mul_epu32(a3a3, b3b0));
+  c2c3 = _mm_xor_si128(c2c3, _mm_mul_epu32(a1a1, b1b2));
+
+  c0c1 = _mm_and_si128(
+      c0c1, _mm_setr_epi32(0x11111111, 0x11111111, 0x22222222, 0x22222222));
+  c2c3 = _mm_and_si128(
+      c2c3, _mm_setr_epi32(0x44444444, 0x44444444, 0x88888888, 0x88888888));
+
+  c0c1 = _mm_xor_si128(c0c1, c2c3);
+  // c0 ^= c1
+  c0c1 = _mm_xor_si128(c0c1, _mm_srli_si128(c0c1, 8));
+  return c0c1;
+}
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  uint32_t a0 = a & 0xffffffff;
+  uint32_t a1 = a >> 32;
+  uint32_t b0 = b & 0xffffffff;
+  uint32_t b1 = b >> 32;
+  // Karatsuba multiplication.
+  __m128i lo = gcm_mul32_nohw(a0, b0);
+  __m128i hi = gcm_mul32_nohw(a1, b1);
+  __m128i mid = gcm_mul32_nohw(a0 ^ a1, b0 ^ b1);
+  mid = _mm_xor_si128(mid, lo);
+  mid = _mm_xor_si128(mid, hi);
+  __m128i ret = _mm_unpacklo_epi64(lo, hi);
+  mid = _mm_slli_si128(mid, 4);
+  mid = _mm_and_si128(mid, _mm_setr_epi32(0, 0xffffffff, 0xffffffff, 0));
+  ret = _mm_xor_si128(ret, mid);
+  memcpy(out_lo, &ret, 8);
+  memcpy(out_hi, ((char*)&ret) + 8, 8);
+}
+
+#else  // !BORINGSSL_HAS_UINT128 && !OPENSSL_SSE2
+
+static uint64_t gcm_mul32_nohw(uint32_t a, uint32_t b) {
+  // One term every four bits means the largest term is 32/4 = 8, which does not
+  // overflow into the next term.
+  uint32_t a0 = a & 0x11111111;
+  uint32_t a1 = a & 0x22222222;
+  uint32_t a2 = a & 0x44444444;
+  uint32_t a3 = a & 0x88888888;
+
+  uint32_t b0 = b & 0x11111111;
+  uint32_t b1 = b & 0x22222222;
+  uint32_t b2 = b & 0x44444444;
+  uint32_t b3 = b & 0x88888888;
+
+  uint64_t c0 = (a0 * (uint64_t)b0) ^ (a1 * (uint64_t)b3) ^
+                (a2 * (uint64_t)b2) ^ (a3 * (uint64_t)b1);
+  uint64_t c1 = (a0 * (uint64_t)b1) ^ (a1 * (uint64_t)b0) ^
+                (a2 * (uint64_t)b3) ^ (a3 * (uint64_t)b2);
+  uint64_t c2 = (a0 * (uint64_t)b2) ^ (a1 * (uint64_t)b1) ^
+                (a2 * (uint64_t)b0) ^ (a3 * (uint64_t)b3);
+  uint64_t c3 = (a0 * (uint64_t)b3) ^ (a1 * (uint64_t)b2) ^
+                (a2 * (uint64_t)b1) ^ (a3 * (uint64_t)b0);
+
+  return (c0 & UINT64_C(0x1111111111111111)) |
+         (c1 & UINT64_C(0x2222222222222222)) |
+         (c2 & UINT64_C(0x4444444444444444)) |
+         (c3 & UINT64_C(0x8888888888888888));
+}
+
+static void gcm_mul64_nohw(uint64_t *out_lo, uint64_t *out_hi, uint64_t a,
+                           uint64_t b) {
+  uint32_t a0 = a & 0xffffffff;
+  uint32_t a1 = a >> 32;
+  uint32_t b0 = b & 0xffffffff;
+  uint32_t b1 = b >> 32;
+  // Karatsuba multiplication.
+  uint64_t lo = gcm_mul32_nohw(a0, b0);
+  uint64_t hi = gcm_mul32_nohw(a1, b1);
+  uint64_t mid = gcm_mul32_nohw(a0 ^ a1, b0 ^ b1) ^ lo ^ hi;
+  *out_lo = lo ^ (mid << 32);
+  *out_hi = hi ^ (mid >> 32);
+}
+
+#endif  // BORINGSSL_HAS_UINT128
+
+void gcm_init_nohw(u128 Htable[16], const uint64_t Xi[2]) {
+  // We implement GHASH in terms of POLYVAL, as described in RFC8452. This
+  // avoids a shift by 1 in the multiplication, needed to account for bit
+  // reversal losing a bit after multiplication, that is,
+  // rev128(X) * rev128(Y) = rev255(X*Y).
+  //
+  // Per Appendix A, we run mulX_POLYVAL. Note this is the same transformation
+  // applied by |gcm_init_clmul|, etc. Note |Xi| has already been byteswapped.
+  //
+  // See also slide 16 of
+  // https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf
+  Htable[0].lo = Xi[1];
+  Htable[0].hi = Xi[0];
+
+  uint64_t carry = Htable[0].hi >> 63;
+  carry = 0u - carry;
+
+  Htable[0].hi <<= 1;
+  Htable[0].hi |= Htable[0].lo >> 63;
+  Htable[0].lo <<= 1;
+
+  // The irreducible polynomial is 1 + x^121 + x^126 + x^127 + x^128, so we
+  // conditionally add 0xc200...0001.
+  Htable[0].lo ^= carry & 1;
+  Htable[0].hi ^= carry & UINT64_C(0xc200000000000000);
+
+  // This implementation does not use the rest of |Htable|.
+}
+
+static void gcm_polyval_nohw(uint64_t Xi[2], const u128 *H) {
+  // Karatsuba multiplication. The product of |Xi| and |H| is stored in |r0|
+  // through |r3|. Note there is no byte or bit reversal because we are
+  // evaluating POLYVAL.
+  uint64_t r0, r1;
+  gcm_mul64_nohw(&r0, &r1, Xi[0], H->lo);
+  uint64_t r2, r3;
+  gcm_mul64_nohw(&r2, &r3, Xi[1], H->hi);
+  uint64_t mid0, mid1;
+  gcm_mul64_nohw(&mid0, &mid1, Xi[0] ^ Xi[1], H->hi ^ H->lo);
+  mid0 ^= r0 ^ r2;
+  mid1 ^= r1 ^ r3;
+  r2 ^= mid1;
+  r1 ^= mid0;
+
+  // Now we multiply our 256-bit result by x^-128 and reduce. |r2| and
+  // |r3| shifts into position and we must multiply |r0| and |r1| by x^-128. We
+  // have:
+  //
+  //       1 = x^121 + x^126 + x^127 + x^128
+  //  x^-128 = x^-7 + x^-2 + x^-1 + 1
+  //
+  // This is the GHASH reduction step, but with bits flowing in reverse.
+
+  // The x^-7, x^-2, and x^-1 terms shift bits past x^0, which would require
+  // another reduction steps. Instead, we gather the excess bits, incorporate
+  // them into |r0| and |r1| and reduce once. See slides 17-19
+  // of https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf.
+  r1 ^= (r0 << 63) ^ (r0 << 62) ^ (r0 << 57);
+
+  // 1
+  r2 ^= r0;
+  r3 ^= r1;
+
+  // x^-1
+  r2 ^= r0 >> 1;
+  r2 ^= r1 << 63;
+  r3 ^= r1 >> 1;
+
+  // x^-2
+  r2 ^= r0 >> 2;
+  r2 ^= r1 << 62;
+  r3 ^= r1 >> 2;
+
+  // x^-7
+  r2 ^= r0 >> 7;
+  r2 ^= r1 << 57;
+  r3 ^= r1 >> 7;
+
+  Xi[0] = r2;
+  Xi[1] = r3;
+}
+
+void gcm_gmult_nohw(uint64_t Xi[2], const u128 Htable[16]) {
+  uint64_t swapped[2];
+  swapped[0] = CRYPTO_bswap8(Xi[1]);
+  swapped[1] = CRYPTO_bswap8(Xi[0]);
+  gcm_polyval_nohw(swapped, &Htable[0]);
+  Xi[0] = CRYPTO_bswap8(swapped[1]);
+  Xi[1] = CRYPTO_bswap8(swapped[0]);
+}
+
+void gcm_ghash_nohw(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len) {
+  uint64_t swapped[2];
+  swapped[0] = CRYPTO_bswap8(Xi[1]);
+  swapped[1] = CRYPTO_bswap8(Xi[0]);
+
+  while (len >= 16) {
+    uint64_t block[2];
+    OPENSSL_memcpy(block, inp, 16);
+    swapped[0] ^= CRYPTO_bswap8(block[1]);
+    swapped[1] ^= CRYPTO_bswap8(block[0]);
+    gcm_polyval_nohw(swapped, &Htable[0]);
+    inp += 16;
+    len -= 16;
+  }
+
+  Xi[0] = CRYPTO_bswap8(swapped[1]);
+  Xi[1] = CRYPTO_bswap8(swapped[0]);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h
new file mode 100644
index 0000000..98dd8ab
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h	
@@ -0,0 +1,441 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#ifndef OPENSSL_HEADER_MODES_INTERNAL_H
+#define OPENSSL_HEADER_MODES_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/aes.h>
+#include <openssl_grpc/cpu.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+static inline uint32_t GETU32(const void *in) {
+  uint32_t v;
+  OPENSSL_memcpy(&v, in, sizeof(v));
+  return CRYPTO_bswap4(v);
+}
+
+static inline void PUTU32(void *out, uint32_t v) {
+  v = CRYPTO_bswap4(v);
+  OPENSSL_memcpy(out, &v, sizeof(v));
+}
+
+static inline size_t load_word_le(const void *in) {
+  size_t v;
+  OPENSSL_memcpy(&v, in, sizeof(v));
+  return v;
+}
+
+static inline void store_word_le(void *out, size_t v) {
+  OPENSSL_memcpy(out, &v, sizeof(v));
+}
+
+// block128_f is the type of an AES block cipher implementation.
+//
+// Unlike upstream OpenSSL, it and the other functions in this file hard-code
+// |AES_KEY|. It is undefined in C to call a function pointer with anything
+// other than the original type. Thus we either must match |block128_f| to the
+// type signature of |AES_encrypt| and friends or pass in |void*| wrapper
+// functions.
+//
+// These functions are called exclusively with AES, so we use the former.
+typedef void (*block128_f)(const uint8_t in[16], uint8_t out[16],
+                           const AES_KEY *key);
+
+
+// CTR.
+
+// ctr128_f is the type of a function that performs CTR-mode encryption.
+typedef void (*ctr128_f)(const uint8_t *in, uint8_t *out, size_t blocks,
+                         const AES_KEY *key, const uint8_t ivec[16]);
+
+// CRYPTO_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode)
+// |len| bytes from |in| to |out| using |block| in counter mode. There's no
+// requirement that |len| be a multiple of any value and any partial blocks are
+// stored in |ecount_buf| and |*num|, which must be zeroed before the initial
+// call. The counter is a 128-bit, big-endian value in |ivec| and is
+// incremented by this function.
+void CRYPTO_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           uint8_t ecount_buf[16], unsigned *num,
+                           block128_f block);
+
+// CRYPTO_ctr128_encrypt_ctr32 acts like |CRYPTO_ctr128_encrypt| but takes
+// |ctr|, a function that performs CTR mode but only deals with the lower 32
+// bits of the counter. This is useful when |ctr| can be an optimised
+// function.
+void CRYPTO_ctr128_encrypt_ctr32(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, uint8_t ivec[16],
+                                 uint8_t ecount_buf[16], unsigned *num,
+                                 ctr128_f ctr);
+
+
+// GCM.
+//
+// This API differs from the upstream API slightly. The |GCM128_CONTEXT| does
+// not have a |key| pointer that points to the key as upstream's version does.
+// Instead, every function takes a |key| parameter. This way |GCM128_CONTEXT|
+// can be safely copied. Additionally, |gcm_key| is split into a separate
+// struct.
+
+typedef struct { uint64_t hi,lo; } u128;
+
+// gmult_func multiplies |Xi| by the GCM key and writes the result back to
+// |Xi|.
+typedef void (*gmult_func)(uint64_t Xi[2], const u128 Htable[16]);
+
+// ghash_func repeatedly multiplies |Xi| by the GCM key and adds in blocks from
+// |inp|. The result is written back to |Xi| and the |len| argument must be a
+// multiple of 16.
+typedef void (*ghash_func)(uint64_t Xi[2], const u128 Htable[16],
+                           const uint8_t *inp, size_t len);
+
+typedef struct gcm128_key_st {
+  // Note the MOVBE-based, x86-64, GHASH assembly requires |H| and |Htable| to
+  // be the first two elements of this struct. Additionally, some assembly
+  // routines require a 16-byte-aligned |Htable| when hashing data, but not
+  // initialization. |GCM128_KEY| is not itself aligned to simplify embedding in
+  // |EVP_AEAD_CTX|, but |Htable|'s offset must be a multiple of 16.
+  u128 H;
+  u128 Htable[16];
+  gmult_func gmult;
+  ghash_func ghash;
+
+  block128_f block;
+
+  // use_aesni_gcm_crypt is true if this context should use the assembly
+  // functions |aesni_gcm_encrypt| and |aesni_gcm_decrypt| to process data.
+  unsigned use_aesni_gcm_crypt:1;
+} GCM128_KEY;
+
+// GCM128_CONTEXT contains state for a single GCM operation. The structure
+// should be zero-initialized before use.
+typedef struct {
+  // The following 5 names follow names in GCM specification
+  union {
+    uint64_t u[2];
+    uint32_t d[4];
+    uint8_t c[16];
+    size_t t[16 / sizeof(size_t)];
+  } Yi, EKi, EK0, len, Xi;
+
+  // Note that the order of |Xi| and |gcm_key| is fixed by the MOVBE-based,
+  // x86-64, GHASH assembly. Additionally, some assembly routines require
+  // |gcm_key| to be 16-byte aligned. |GCM128_KEY| is not itself aligned to
+  // simplify embedding in |EVP_AEAD_CTX|.
+  alignas(16) GCM128_KEY gcm_key;
+
+  unsigned mres, ares;
+} GCM128_CONTEXT;
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// crypto_gcm_clmul_enabled returns one if the CLMUL implementation of GCM is
+// used.
+int crypto_gcm_clmul_enabled(void);
+#endif
+
+// CRYPTO_ghash_init writes a precomputed table of powers of |gcm_key| to
+// |out_table| and sets |*out_mult| and |*out_hash| to (potentially hardware
+// accelerated) functions for performing operations in the GHASH field. If the
+// AVX implementation was used |*out_is_avx| will be true.
+void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash,
+                       u128 *out_key, u128 out_table[16], int *out_is_avx,
+                       const uint8_t gcm_key[16]);
+
+// CRYPTO_gcm128_init_key initialises |gcm_key| to use |block| (typically AES)
+// with the given key. |block_is_hwaes| is one if |block| is |aes_hw_encrypt|.
+OPENSSL_EXPORT void CRYPTO_gcm128_init_key(GCM128_KEY *gcm_key,
+                                           const AES_KEY *key, block128_f block,
+                                           int block_is_hwaes);
+
+// CRYPTO_gcm128_setiv sets the IV (nonce) for |ctx|. The |key| must be the
+// same key that was passed to |CRYPTO_gcm128_init|.
+OPENSSL_EXPORT void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                        const uint8_t *iv, size_t iv_len);
+
+// CRYPTO_gcm128_aad sets the authenticated data for an instance of GCM.
+// This must be called before and data is encrypted. It returns one on success
+// and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const uint8_t *aad,
+                                     size_t len);
+
+// CRYPTO_gcm128_encrypt encrypts |len| bytes from |in| to |out|. The |key|
+// must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
+                                         const AES_KEY *key, const uint8_t *in,
+                                         uint8_t *out, size_t len);
+
+// CRYPTO_gcm128_decrypt decrypts |len| bytes from |in| to |out|. The |key|
+// must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
+                                         const AES_KEY *key, const uint8_t *in,
+                                         uint8_t *out, size_t len);
+
+// CRYPTO_gcm128_encrypt_ctr32 encrypts |len| bytes from |in| to |out| using
+// a CTR function that only handles the bottom 32 bits of the nonce, like
+// |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
+// passed to |CRYPTO_gcm128_init|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
+                                               const AES_KEY *key,
+                                               const uint8_t *in, uint8_t *out,
+                                               size_t len, ctr128_f stream);
+
+// CRYPTO_gcm128_decrypt_ctr32 decrypts |len| bytes from |in| to |out| using
+// a CTR function that only handles the bottom 32 bits of the nonce, like
+// |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
+// passed to |CRYPTO_gcm128_init|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
+                                               const AES_KEY *key,
+                                               const uint8_t *in, uint8_t *out,
+                                               size_t len, ctr128_f stream);
+
+// CRYPTO_gcm128_finish calculates the authenticator and compares it against
+// |len| bytes of |tag|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const uint8_t *tag,
+                                        size_t len);
+
+// CRYPTO_gcm128_tag calculates the authenticator and copies it into |tag|.
+// The minimum of |len| and 16 bytes are copied into |tag|.
+OPENSSL_EXPORT void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, uint8_t *tag,
+                                      size_t len);
+
+
+// GCM assembly.
+
+void gcm_init_nohw(u128 Htable[16], const uint64_t H[2]);
+void gcm_gmult_nohw(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_nohw(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len);
+
+#if !defined(OPENSSL_NO_ASM)
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+#define GCM_FUNCREF
+void gcm_init_clmul(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_clmul(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_clmul(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                     size_t len);
+
+OPENSSL_INLINE char gcm_ssse3_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (41 - 32))) != 0;
+}
+
+// |gcm_gmult_ssse3| and |gcm_ghash_ssse3| require |Htable| to be
+// 16-byte-aligned, but |gcm_init_ssse3| does not.
+void gcm_init_ssse3(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_ssse3(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_ssse3(uint64_t Xi[2], const u128 Htable[16], const uint8_t *in,
+                     size_t len);
+
+#if defined(OPENSSL_X86_64)
+#define GHASH_ASM_X86_64
+void gcm_init_avx(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_avx(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_avx(uint64_t Xi[2], const u128 Htable[16], const uint8_t *in,
+                   size_t len);
+
+#define AESNI_GCM
+size_t aesni_gcm_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], uint64_t *Xi);
+size_t aesni_gcm_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], uint64_t *Xi);
+#endif  // OPENSSL_X86_64
+
+#if defined(OPENSSL_X86)
+#define GHASH_ASM_X86
+#endif  // OPENSSL_X86
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+#define GHASH_ASM_ARM
+#define GCM_FUNCREF
+
+OPENSSL_INLINE int gcm_pmull_capable(void) {
+  return CRYPTO_is_ARMv8_PMULL_capable();
+}
+
+void gcm_init_v8(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_v8(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_v8(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                  size_t len);
+
+OPENSSL_INLINE int gcm_neon_capable(void) { return CRYPTO_is_NEON_capable(); }
+
+void gcm_init_neon(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_neon(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_neon(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len);
+
+#elif defined(OPENSSL_PPC64LE)
+#define GHASH_ASM_PPC64LE
+#define GCM_FUNCREF
+void gcm_init_p8(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_p8(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_p8(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                  size_t len);
+#endif
+#endif  // OPENSSL_NO_ASM
+
+
+// CBC.
+
+// cbc128_f is the type of a function that performs CBC-mode encryption.
+typedef void (*cbc128_f)(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], int enc);
+
+// CRYPTO_cbc128_encrypt encrypts |len| bytes from |in| to |out| using the
+// given IV and block cipher in CBC mode. The input need not be a multiple of
+// 128 bits long, but the output will round up to the nearest 128 bit multiple,
+// zero padding the input if needed. The IV will be updated on return.
+void CRYPTO_cbc128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block);
+
+// CRYPTO_cbc128_decrypt decrypts |len| bytes from |in| to |out| using the
+// given IV and block cipher in CBC mode. If |len| is not a multiple of 128
+// bits then only that many bytes will be written, but a multiple of 128 bits
+// is always read from |in|. The IV will be updated on return.
+void CRYPTO_cbc128_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block);
+
+
+// OFB.
+
+// CRYPTO_ofb128_encrypt encrypts (or decrypts, it's the same with OFB mode)
+// |len| bytes from |in| to |out| using |block| in OFB mode. There's no
+// requirement that |len| be a multiple of any value and any partial blocks are
+// stored in |ivec| and |*num|, the latter must be zero before the initial
+// call.
+void CRYPTO_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           block128_f block);
+
+
+// CFB.
+
+// CRYPTO_cfb128_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB mode. There's no requirement that
+// |len| be a multiple of any value and any partial blocks are stored in |ivec|
+// and |*num|, the latter must be zero before the initial call.
+void CRYPTO_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           int enc, block128_f block);
+
+// CRYPTO_cfb128_8_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB-8 mode. Prior to the first call
+// |num| should be set to zero.
+void CRYPTO_cfb128_8_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block);
+
+// CRYPTO_cfb128_1_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB-1 mode. Prior to the first call
+// |num| should be set to zero.
+void CRYPTO_cfb128_1_encrypt(const uint8_t *in, uint8_t *out, size_t bits,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block);
+
+size_t CRYPTO_cts128_encrypt_block(const uint8_t *in, uint8_t *out, size_t len,
+                                   const AES_KEY *key, uint8_t ivec[16],
+                                   block128_f block);
+
+
+// POLYVAL.
+//
+// POLYVAL is a polynomial authenticator that operates over a field very
+// similar to the one that GHASH uses. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02#section-3.
+
+typedef union {
+  uint64_t u[2];
+  uint8_t c[16];
+} polyval_block;
+
+struct polyval_ctx {
+  // Note that the order of |S|, |H| and |Htable| is fixed by the MOVBE-based,
+  // x86-64, GHASH assembly. Additionally, some assembly routines require
+  // |Htable| to be 16-byte aligned.
+  polyval_block S;
+  u128 H;
+  alignas(16) u128 Htable[16];
+  gmult_func gmult;
+  ghash_func ghash;
+};
+
+// CRYPTO_POLYVAL_init initialises |ctx| using |key|.
+void CRYPTO_POLYVAL_init(struct polyval_ctx *ctx, const uint8_t key[16]);
+
+// CRYPTO_POLYVAL_update_blocks updates the accumulator in |ctx| given the
+// blocks from |in|. Only a whole number of blocks can be processed so |in_len|
+// must be a multiple of 16.
+void CRYPTO_POLYVAL_update_blocks(struct polyval_ctx *ctx, const uint8_t *in,
+                                  size_t in_len);
+
+// CRYPTO_POLYVAL_finish writes the accumulator from |ctx| to |out|.
+void CRYPTO_POLYVAL_finish(const struct polyval_ctx *ctx, uint8_t out[16]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MODES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h.grpc_back
new file mode 100644
index 0000000..2693fa6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/internal.h.grpc_back	
@@ -0,0 +1,441 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#ifndef OPENSSL_HEADER_MODES_INTERNAL_H
+#define OPENSSL_HEADER_MODES_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/aes.h>
+#include <openssl/cpu.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+static inline uint32_t GETU32(const void *in) {
+  uint32_t v;
+  OPENSSL_memcpy(&v, in, sizeof(v));
+  return CRYPTO_bswap4(v);
+}
+
+static inline void PUTU32(void *out, uint32_t v) {
+  v = CRYPTO_bswap4(v);
+  OPENSSL_memcpy(out, &v, sizeof(v));
+}
+
+static inline size_t load_word_le(const void *in) {
+  size_t v;
+  OPENSSL_memcpy(&v, in, sizeof(v));
+  return v;
+}
+
+static inline void store_word_le(void *out, size_t v) {
+  OPENSSL_memcpy(out, &v, sizeof(v));
+}
+
+// block128_f is the type of an AES block cipher implementation.
+//
+// Unlike upstream OpenSSL, it and the other functions in this file hard-code
+// |AES_KEY|. It is undefined in C to call a function pointer with anything
+// other than the original type. Thus we either must match |block128_f| to the
+// type signature of |AES_encrypt| and friends or pass in |void*| wrapper
+// functions.
+//
+// These functions are called exclusively with AES, so we use the former.
+typedef void (*block128_f)(const uint8_t in[16], uint8_t out[16],
+                           const AES_KEY *key);
+
+
+// CTR.
+
+// ctr128_f is the type of a function that performs CTR-mode encryption.
+typedef void (*ctr128_f)(const uint8_t *in, uint8_t *out, size_t blocks,
+                         const AES_KEY *key, const uint8_t ivec[16]);
+
+// CRYPTO_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode)
+// |len| bytes from |in| to |out| using |block| in counter mode. There's no
+// requirement that |len| be a multiple of any value and any partial blocks are
+// stored in |ecount_buf| and |*num|, which must be zeroed before the initial
+// call. The counter is a 128-bit, big-endian value in |ivec| and is
+// incremented by this function.
+void CRYPTO_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           uint8_t ecount_buf[16], unsigned *num,
+                           block128_f block);
+
+// CRYPTO_ctr128_encrypt_ctr32 acts like |CRYPTO_ctr128_encrypt| but takes
+// |ctr|, a function that performs CTR mode but only deals with the lower 32
+// bits of the counter. This is useful when |ctr| can be an optimised
+// function.
+void CRYPTO_ctr128_encrypt_ctr32(const uint8_t *in, uint8_t *out, size_t len,
+                                 const AES_KEY *key, uint8_t ivec[16],
+                                 uint8_t ecount_buf[16], unsigned *num,
+                                 ctr128_f ctr);
+
+
+// GCM.
+//
+// This API differs from the upstream API slightly. The |GCM128_CONTEXT| does
+// not have a |key| pointer that points to the key as upstream's version does.
+// Instead, every function takes a |key| parameter. This way |GCM128_CONTEXT|
+// can be safely copied. Additionally, |gcm_key| is split into a separate
+// struct.
+
+typedef struct { uint64_t hi,lo; } u128;
+
+// gmult_func multiplies |Xi| by the GCM key and writes the result back to
+// |Xi|.
+typedef void (*gmult_func)(uint64_t Xi[2], const u128 Htable[16]);
+
+// ghash_func repeatedly multiplies |Xi| by the GCM key and adds in blocks from
+// |inp|. The result is written back to |Xi| and the |len| argument must be a
+// multiple of 16.
+typedef void (*ghash_func)(uint64_t Xi[2], const u128 Htable[16],
+                           const uint8_t *inp, size_t len);
+
+typedef struct gcm128_key_st {
+  // Note the MOVBE-based, x86-64, GHASH assembly requires |H| and |Htable| to
+  // be the first two elements of this struct. Additionally, some assembly
+  // routines require a 16-byte-aligned |Htable| when hashing data, but not
+  // initialization. |GCM128_KEY| is not itself aligned to simplify embedding in
+  // |EVP_AEAD_CTX|, but |Htable|'s offset must be a multiple of 16.
+  u128 H;
+  u128 Htable[16];
+  gmult_func gmult;
+  ghash_func ghash;
+
+  block128_f block;
+
+  // use_aesni_gcm_crypt is true if this context should use the assembly
+  // functions |aesni_gcm_encrypt| and |aesni_gcm_decrypt| to process data.
+  unsigned use_aesni_gcm_crypt:1;
+} GCM128_KEY;
+
+// GCM128_CONTEXT contains state for a single GCM operation. The structure
+// should be zero-initialized before use.
+typedef struct {
+  // The following 5 names follow names in GCM specification
+  union {
+    uint64_t u[2];
+    uint32_t d[4];
+    uint8_t c[16];
+    size_t t[16 / sizeof(size_t)];
+  } Yi, EKi, EK0, len, Xi;
+
+  // Note that the order of |Xi| and |gcm_key| is fixed by the MOVBE-based,
+  // x86-64, GHASH assembly. Additionally, some assembly routines require
+  // |gcm_key| to be 16-byte aligned. |GCM128_KEY| is not itself aligned to
+  // simplify embedding in |EVP_AEAD_CTX|.
+  alignas(16) GCM128_KEY gcm_key;
+
+  unsigned mres, ares;
+} GCM128_CONTEXT;
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// crypto_gcm_clmul_enabled returns one if the CLMUL implementation of GCM is
+// used.
+int crypto_gcm_clmul_enabled(void);
+#endif
+
+// CRYPTO_ghash_init writes a precomputed table of powers of |gcm_key| to
+// |out_table| and sets |*out_mult| and |*out_hash| to (potentially hardware
+// accelerated) functions for performing operations in the GHASH field. If the
+// AVX implementation was used |*out_is_avx| will be true.
+void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash,
+                       u128 *out_key, u128 out_table[16], int *out_is_avx,
+                       const uint8_t gcm_key[16]);
+
+// CRYPTO_gcm128_init_key initialises |gcm_key| to use |block| (typically AES)
+// with the given key. |block_is_hwaes| is one if |block| is |aes_hw_encrypt|.
+OPENSSL_EXPORT void CRYPTO_gcm128_init_key(GCM128_KEY *gcm_key,
+                                           const AES_KEY *key, block128_f block,
+                                           int block_is_hwaes);
+
+// CRYPTO_gcm128_setiv sets the IV (nonce) for |ctx|. The |key| must be the
+// same key that was passed to |CRYPTO_gcm128_init|.
+OPENSSL_EXPORT void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const AES_KEY *key,
+                                        const uint8_t *iv, size_t iv_len);
+
+// CRYPTO_gcm128_aad sets the authenticated data for an instance of GCM.
+// This must be called before and data is encrypted. It returns one on success
+// and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const uint8_t *aad,
+                                     size_t len);
+
+// CRYPTO_gcm128_encrypt encrypts |len| bytes from |in| to |out|. The |key|
+// must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
+                                         const AES_KEY *key, const uint8_t *in,
+                                         uint8_t *out, size_t len);
+
+// CRYPTO_gcm128_decrypt decrypts |len| bytes from |in| to |out|. The |key|
+// must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
+                                         const AES_KEY *key, const uint8_t *in,
+                                         uint8_t *out, size_t len);
+
+// CRYPTO_gcm128_encrypt_ctr32 encrypts |len| bytes from |in| to |out| using
+// a CTR function that only handles the bottom 32 bits of the nonce, like
+// |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
+// passed to |CRYPTO_gcm128_init|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
+                                               const AES_KEY *key,
+                                               const uint8_t *in, uint8_t *out,
+                                               size_t len, ctr128_f stream);
+
+// CRYPTO_gcm128_decrypt_ctr32 decrypts |len| bytes from |in| to |out| using
+// a CTR function that only handles the bottom 32 bits of the nonce, like
+// |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
+// passed to |CRYPTO_gcm128_init|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
+                                               const AES_KEY *key,
+                                               const uint8_t *in, uint8_t *out,
+                                               size_t len, ctr128_f stream);
+
+// CRYPTO_gcm128_finish calculates the authenticator and compares it against
+// |len| bytes of |tag|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const uint8_t *tag,
+                                        size_t len);
+
+// CRYPTO_gcm128_tag calculates the authenticator and copies it into |tag|.
+// The minimum of |len| and 16 bytes are copied into |tag|.
+OPENSSL_EXPORT void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, uint8_t *tag,
+                                      size_t len);
+
+
+// GCM assembly.
+
+void gcm_init_nohw(u128 Htable[16], const uint64_t H[2]);
+void gcm_gmult_nohw(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_nohw(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len);
+
+#if !defined(OPENSSL_NO_ASM)
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+#define GCM_FUNCREF
+void gcm_init_clmul(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_clmul(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_clmul(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                     size_t len);
+
+OPENSSL_INLINE char gcm_ssse3_capable(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1 << (41 - 32))) != 0;
+}
+
+// |gcm_gmult_ssse3| and |gcm_ghash_ssse3| require |Htable| to be
+// 16-byte-aligned, but |gcm_init_ssse3| does not.
+void gcm_init_ssse3(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_ssse3(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_ssse3(uint64_t Xi[2], const u128 Htable[16], const uint8_t *in,
+                     size_t len);
+
+#if defined(OPENSSL_X86_64)
+#define GHASH_ASM_X86_64
+void gcm_init_avx(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_avx(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_avx(uint64_t Xi[2], const u128 Htable[16], const uint8_t *in,
+                   size_t len);
+
+#define AESNI_GCM
+size_t aesni_gcm_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], uint64_t *Xi);
+size_t aesni_gcm_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], uint64_t *Xi);
+#endif  // OPENSSL_X86_64
+
+#if defined(OPENSSL_X86)
+#define GHASH_ASM_X86
+#endif  // OPENSSL_X86
+
+#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+#define GHASH_ASM_ARM
+#define GCM_FUNCREF
+
+OPENSSL_INLINE int gcm_pmull_capable(void) {
+  return CRYPTO_is_ARMv8_PMULL_capable();
+}
+
+void gcm_init_v8(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_v8(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_v8(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                  size_t len);
+
+OPENSSL_INLINE int gcm_neon_capable(void) { return CRYPTO_is_NEON_capable(); }
+
+void gcm_init_neon(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_neon(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_neon(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                    size_t len);
+
+#elif defined(OPENSSL_PPC64LE)
+#define GHASH_ASM_PPC64LE
+#define GCM_FUNCREF
+void gcm_init_p8(u128 Htable[16], const uint64_t Xi[2]);
+void gcm_gmult_p8(uint64_t Xi[2], const u128 Htable[16]);
+void gcm_ghash_p8(uint64_t Xi[2], const u128 Htable[16], const uint8_t *inp,
+                  size_t len);
+#endif
+#endif  // OPENSSL_NO_ASM
+
+
+// CBC.
+
+// cbc128_f is the type of a function that performs CBC-mode encryption.
+typedef void (*cbc128_f)(const uint8_t *in, uint8_t *out, size_t len,
+                         const AES_KEY *key, uint8_t ivec[16], int enc);
+
+// CRYPTO_cbc128_encrypt encrypts |len| bytes from |in| to |out| using the
+// given IV and block cipher in CBC mode. The input need not be a multiple of
+// 128 bits long, but the output will round up to the nearest 128 bit multiple,
+// zero padding the input if needed. The IV will be updated on return.
+void CRYPTO_cbc128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block);
+
+// CRYPTO_cbc128_decrypt decrypts |len| bytes from |in| to |out| using the
+// given IV and block cipher in CBC mode. If |len| is not a multiple of 128
+// bits then only that many bytes will be written, but a multiple of 128 bits
+// is always read from |in|. The IV will be updated on return.
+void CRYPTO_cbc128_decrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16],
+                           block128_f block);
+
+
+// OFB.
+
+// CRYPTO_ofb128_encrypt encrypts (or decrypts, it's the same with OFB mode)
+// |len| bytes from |in| to |out| using |block| in OFB mode. There's no
+// requirement that |len| be a multiple of any value and any partial blocks are
+// stored in |ivec| and |*num|, the latter must be zero before the initial
+// call.
+void CRYPTO_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           block128_f block);
+
+
+// CFB.
+
+// CRYPTO_cfb128_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB mode. There's no requirement that
+// |len| be a multiple of any value and any partial blocks are stored in |ivec|
+// and |*num|, the latter must be zero before the initial call.
+void CRYPTO_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           int enc, block128_f block);
+
+// CRYPTO_cfb128_8_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB-8 mode. Prior to the first call
+// |num| should be set to zero.
+void CRYPTO_cfb128_8_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block);
+
+// CRYPTO_cfb128_1_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
+// from |in| to |out| using |block| in CFB-1 mode. Prior to the first call
+// |num| should be set to zero.
+void CRYPTO_cfb128_1_encrypt(const uint8_t *in, uint8_t *out, size_t bits,
+                             const AES_KEY *key, uint8_t ivec[16],
+                             unsigned *num, int enc, block128_f block);
+
+size_t CRYPTO_cts128_encrypt_block(const uint8_t *in, uint8_t *out, size_t len,
+                                   const AES_KEY *key, uint8_t ivec[16],
+                                   block128_f block);
+
+
+// POLYVAL.
+//
+// POLYVAL is a polynomial authenticator that operates over a field very
+// similar to the one that GHASH uses. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02#section-3.
+
+typedef union {
+  uint64_t u[2];
+  uint8_t c[16];
+} polyval_block;
+
+struct polyval_ctx {
+  // Note that the order of |S|, |H| and |Htable| is fixed by the MOVBE-based,
+  // x86-64, GHASH assembly. Additionally, some assembly routines require
+  // |Htable| to be 16-byte aligned.
+  polyval_block S;
+  u128 H;
+  alignas(16) u128 Htable[16];
+  gmult_func gmult;
+  ghash_func ghash;
+};
+
+// CRYPTO_POLYVAL_init initialises |ctx| using |key|.
+void CRYPTO_POLYVAL_init(struct polyval_ctx *ctx, const uint8_t key[16]);
+
+// CRYPTO_POLYVAL_update_blocks updates the accumulator in |ctx| given the
+// blocks from |in|. Only a whole number of blocks can be processed so |in_len|
+// must be a multiple of 16.
+void CRYPTO_POLYVAL_update_blocks(struct polyval_ctx *ctx, const uint8_t *in,
+                                  size_t in_len);
+
+// CRYPTO_POLYVAL_finish writes the accumulator from |ctx| to |out|.
+void CRYPTO_POLYVAL_finish(const struct polyval_ctx *ctx, uint8_t out[16]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MODES_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c
new file mode 100644
index 0000000..bbd1d9c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c	
@@ -0,0 +1,96 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl_grpc/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+void CRYPTO_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           block128_f block) {
+  assert(in && out && key && ivec && num);
+
+  unsigned n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ivec[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+
+  while (len >= 16) {
+    (*block)(ivec, ivec, key);
+    for (; n < 16; n += sizeof(size_t)) {
+      size_t a, b;
+      OPENSSL_memcpy(&a, in + n, sizeof(size_t));
+      OPENSSL_memcpy(&b, ivec + n, sizeof(size_t));
+
+      const size_t c = a ^ b;
+      OPENSSL_memcpy(out + n, &c, sizeof(size_t));
+    }
+    len -= 16;
+    out += 16;
+    in += 16;
+    n = 0;
+  }
+  if (len) {
+    (*block)(ivec, ivec, key);
+    while (len--) {
+      out[n] = in[n] ^ ivec[n];
+      ++n;
+    }
+  }
+  *num = n;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c.grpc_back
new file mode 100644
index 0000000..4c70ce6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/ofb.c.grpc_back	
@@ -0,0 +1,96 @@
+/* ====================================================================
+ * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#include <openssl/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+
+
+OPENSSL_STATIC_ASSERT(16 % sizeof(size_t) == 0,
+                      "block cannot be divided into size_t");
+
+void CRYPTO_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                           const AES_KEY *key, uint8_t ivec[16], unsigned *num,
+                           block128_f block) {
+  assert(in && out && key && ivec && num);
+
+  unsigned n = *num;
+
+  while (n && len) {
+    *(out++) = *(in++) ^ ivec[n];
+    --len;
+    n = (n + 1) % 16;
+  }
+
+  while (len >= 16) {
+    (*block)(ivec, ivec, key);
+    for (; n < 16; n += sizeof(size_t)) {
+      size_t a, b;
+      OPENSSL_memcpy(&a, in + n, sizeof(size_t));
+      OPENSSL_memcpy(&b, ivec + n, sizeof(size_t));
+
+      const size_t c = a ^ b;
+      OPENSSL_memcpy(out + n, &c, sizeof(size_t));
+    }
+    len -= 16;
+    out += 16;
+    in += 16;
+    n = 0;
+  }
+  if (len) {
+    (*block)(ivec, ivec, key);
+    while (len--) {
+      out[n] = in[n] ^ ivec[n];
+      ++n;
+    }
+  }
+  *num = n;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c
new file mode 100644
index 0000000..7df1ce9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c	
@@ -0,0 +1,91 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/base.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// byte_reverse reverses the order of the bytes in |b->c|.
+static void byte_reverse(polyval_block *b) {
+  const uint64_t t = CRYPTO_bswap8(b->u[0]);
+  b->u[0] = CRYPTO_bswap8(b->u[1]);
+  b->u[1] = t;
+}
+
+// reverse_and_mulX_ghash interprets the bytes |b->c| as a reversed element of
+// the GHASH field, multiplies that by 'x' and serialises the result back into
+// |b|, but with GHASH's backwards bit ordering.
+static void reverse_and_mulX_ghash(polyval_block *b) {
+  uint64_t hi = b->u[0];
+  uint64_t lo = b->u[1];
+  const crypto_word_t carry = constant_time_eq_w(hi & 1, 1);
+  hi >>= 1;
+  hi |= lo << 63;
+  lo >>= 1;
+  lo ^= ((uint64_t) constant_time_select_w(carry, 0xe1, 0)) << 56;
+
+  b->u[0] = CRYPTO_bswap8(lo);
+  b->u[1] = CRYPTO_bswap8(hi);
+}
+
+// POLYVAL(H, X_1, ..., X_n) =
+// ByteReverse(GHASH(mulX_GHASH(ByteReverse(H)), ByteReverse(X_1), ...,
+// ByteReverse(X_n))).
+//
+// See https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02#appendix-A.
+
+void CRYPTO_POLYVAL_init(struct polyval_ctx *ctx, const uint8_t key[16]) {
+  polyval_block H;
+  OPENSSL_memcpy(H.c, key, 16);
+  reverse_and_mulX_ghash(&H);
+
+  int is_avx;
+  CRYPTO_ghash_init(&ctx->gmult, &ctx->ghash, &ctx->H, ctx->Htable, &is_avx,
+                    H.c);
+  OPENSSL_memset(&ctx->S, 0, sizeof(ctx->S));
+}
+
+void CRYPTO_POLYVAL_update_blocks(struct polyval_ctx *ctx, const uint8_t *in,
+                                  size_t in_len) {
+  assert((in_len & 15) == 0);
+  polyval_block reversed[32];
+
+  while (in_len > 0) {
+    size_t todo = in_len;
+    if (todo > sizeof(reversed)) {
+      todo = sizeof(reversed);
+    }
+    OPENSSL_memcpy(reversed, in, todo);
+    in += todo;
+    in_len -= todo;
+
+    size_t blocks = todo / sizeof(polyval_block);
+    for (size_t i = 0; i < blocks; i++) {
+      byte_reverse(&reversed[i]);
+    }
+
+    ctx->ghash(ctx->S.u, ctx->Htable, (const uint8_t *) reversed, todo);
+  }
+}
+
+void CRYPTO_POLYVAL_finish(const struct polyval_ctx *ctx, uint8_t out[16]) {
+  polyval_block S = ctx->S;
+  byte_reverse(&S);
+  OPENSSL_memcpy(out, &S.c, sizeof(polyval_block));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c.grpc_back
new file mode 100644
index 0000000..857dc0e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/modes/polyval.c.grpc_back	
@@ -0,0 +1,91 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/base.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// byte_reverse reverses the order of the bytes in |b->c|.
+static void byte_reverse(polyval_block *b) {
+  const uint64_t t = CRYPTO_bswap8(b->u[0]);
+  b->u[0] = CRYPTO_bswap8(b->u[1]);
+  b->u[1] = t;
+}
+
+// reverse_and_mulX_ghash interprets the bytes |b->c| as a reversed element of
+// the GHASH field, multiplies that by 'x' and serialises the result back into
+// |b|, but with GHASH's backwards bit ordering.
+static void reverse_and_mulX_ghash(polyval_block *b) {
+  uint64_t hi = b->u[0];
+  uint64_t lo = b->u[1];
+  const crypto_word_t carry = constant_time_eq_w(hi & 1, 1);
+  hi >>= 1;
+  hi |= lo << 63;
+  lo >>= 1;
+  lo ^= ((uint64_t) constant_time_select_w(carry, 0xe1, 0)) << 56;
+
+  b->u[0] = CRYPTO_bswap8(lo);
+  b->u[1] = CRYPTO_bswap8(hi);
+}
+
+// POLYVAL(H, X_1, ..., X_n) =
+// ByteReverse(GHASH(mulX_GHASH(ByteReverse(H)), ByteReverse(X_1), ...,
+// ByteReverse(X_n))).
+//
+// See https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02#appendix-A.
+
+void CRYPTO_POLYVAL_init(struct polyval_ctx *ctx, const uint8_t key[16]) {
+  polyval_block H;
+  OPENSSL_memcpy(H.c, key, 16);
+  reverse_and_mulX_ghash(&H);
+
+  int is_avx;
+  CRYPTO_ghash_init(&ctx->gmult, &ctx->ghash, &ctx->H, ctx->Htable, &is_avx,
+                    H.c);
+  OPENSSL_memset(&ctx->S, 0, sizeof(ctx->S));
+}
+
+void CRYPTO_POLYVAL_update_blocks(struct polyval_ctx *ctx, const uint8_t *in,
+                                  size_t in_len) {
+  assert((in_len & 15) == 0);
+  polyval_block reversed[32];
+
+  while (in_len > 0) {
+    size_t todo = in_len;
+    if (todo > sizeof(reversed)) {
+      todo = sizeof(reversed);
+    }
+    OPENSSL_memcpy(reversed, in, todo);
+    in += todo;
+    in_len -= todo;
+
+    size_t blocks = todo / sizeof(polyval_block);
+    for (size_t i = 0; i < blocks; i++) {
+      byte_reverse(&reversed[i]);
+    }
+
+    ctx->ghash(ctx->S.u, ctx->Htable, (const uint8_t *) reversed, todo);
+  }
+}
+
+void CRYPTO_POLYVAL_finish(const struct polyval_ctx *ctx, uint8_t out[16]) {
+  polyval_block S = ctx->S;
+  byte_reverse(&S);
+  OPENSSL_memcpy(out, &S.c, sizeof(polyval_block));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c
new file mode 100644
index 0000000..ec3f321
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c	
@@ -0,0 +1,202 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#include <openssl_grpc/type_check.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../cipher/internal.h"
+
+
+// Section references in this file refer to SP 800-90Ar1:
+// http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-90Ar1.pdf
+
+// See table 3.
+static const uint64_t kMaxReseedCount = UINT64_C(1) << 48;
+
+int CTR_DRBG_init(CTR_DRBG_STATE *drbg,
+                  const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                  const uint8_t *personalization, size_t personalization_len) {
+  // Section 10.2.1.3.1
+  if (personalization_len > CTR_DRBG_ENTROPY_LEN) {
+    return 0;
+  }
+
+  uint8_t seed_material[CTR_DRBG_ENTROPY_LEN];
+  OPENSSL_memcpy(seed_material, entropy, CTR_DRBG_ENTROPY_LEN);
+
+  for (size_t i = 0; i < personalization_len; i++) {
+    seed_material[i] ^= personalization[i];
+  }
+
+  // Section 10.2.1.2
+
+  // kInitMask is the result of encrypting blocks with big-endian value 1, 2
+  // and 3 with the all-zero AES-256 key.
+  static const uint8_t kInitMask[CTR_DRBG_ENTROPY_LEN] = {
+      0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9, 0xa9, 0x63, 0xb4, 0xf1,
+      0xc4, 0xcb, 0x73, 0x8b, 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
+      0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18, 0x72, 0x60, 0x03, 0xca,
+      0x37, 0xa6, 0x2a, 0x74, 0xd1, 0xa2, 0xf5, 0x8e, 0x75, 0x06, 0x35, 0x8e,
+  };
+
+  for (size_t i = 0; i < sizeof(kInitMask); i++) {
+    seed_material[i] ^= kInitMask[i];
+  }
+
+  drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, seed_material, 32);
+  OPENSSL_memcpy(drbg->counter.bytes, seed_material + 32, 16);
+  drbg->reseed_counter = 1;
+
+  return 1;
+}
+
+OPENSSL_STATIC_ASSERT(CTR_DRBG_ENTROPY_LEN % AES_BLOCK_SIZE == 0,
+                      "not a multiple of AES block size");
+
+// ctr_inc adds |n| to the last four bytes of |drbg->counter|, treated as a
+// big-endian number.
+static void ctr32_add(CTR_DRBG_STATE *drbg, uint32_t n) {
+  drbg->counter.words[3] =
+      CRYPTO_bswap4(CRYPTO_bswap4(drbg->counter.words[3]) + n);
+}
+
+static int ctr_drbg_update(CTR_DRBG_STATE *drbg, const uint8_t *data,
+                           size_t data_len) {
+  // Per section 10.2.1.2, |data_len| must be |CTR_DRBG_ENTROPY_LEN|. Here, we
+  // allow shorter inputs and right-pad them with zeros. This is equivalent to
+  // the specified algorithm but saves a copy in |CTR_DRBG_generate|.
+  if (data_len > CTR_DRBG_ENTROPY_LEN) {
+    return 0;
+  }
+
+  uint8_t temp[CTR_DRBG_ENTROPY_LEN];
+  for (size_t i = 0; i < CTR_DRBG_ENTROPY_LEN; i += AES_BLOCK_SIZE) {
+    ctr32_add(drbg, 1);
+    drbg->block(drbg->counter.bytes, temp + i, &drbg->ks);
+  }
+
+  for (size_t i = 0; i < data_len; i++) {
+    temp[i] ^= data[i];
+  }
+
+  drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, temp, 32);
+  OPENSSL_memcpy(drbg->counter.bytes, temp + 32, 16);
+
+  return 1;
+}
+
+int CTR_DRBG_reseed(CTR_DRBG_STATE *drbg,
+                    const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                    const uint8_t *additional_data,
+                    size_t additional_data_len) {
+  // Section 10.2.1.4
+  uint8_t entropy_copy[CTR_DRBG_ENTROPY_LEN];
+
+  if (additional_data_len > 0) {
+    if (additional_data_len > CTR_DRBG_ENTROPY_LEN) {
+      return 0;
+    }
+
+    OPENSSL_memcpy(entropy_copy, entropy, CTR_DRBG_ENTROPY_LEN);
+    for (size_t i = 0; i < additional_data_len; i++) {
+      entropy_copy[i] ^= additional_data[i];
+    }
+
+    entropy = entropy_copy;
+  }
+
+  if (!ctr_drbg_update(drbg, entropy, CTR_DRBG_ENTROPY_LEN)) {
+    return 0;
+  }
+
+  drbg->reseed_counter = 1;
+
+  return 1;
+}
+
+int CTR_DRBG_generate(CTR_DRBG_STATE *drbg, uint8_t *out, size_t out_len,
+                      const uint8_t *additional_data,
+                      size_t additional_data_len) {
+  // See 9.3.1
+  if (out_len > CTR_DRBG_MAX_GENERATE_LENGTH) {
+    return 0;
+  }
+
+  // See 10.2.1.5.1
+  if (drbg->reseed_counter > kMaxReseedCount) {
+    return 0;
+  }
+
+  if (additional_data_len != 0 &&
+      !ctr_drbg_update(drbg, additional_data, additional_data_len)) {
+    return 0;
+  }
+
+  // kChunkSize is used to interact better with the cache. Since the AES-CTR
+  // code assumes that it's encrypting rather than just writing keystream, the
+  // buffer has to be zeroed first. Without chunking, large reads would zero
+  // the whole buffer, flushing the L1 cache, and then do another pass (missing
+  // the cache every time) to “encrypt” it. The code can avoid this by
+  // chunking.
+  static const size_t kChunkSize = 8 * 1024;
+
+  while (out_len >= AES_BLOCK_SIZE) {
+    size_t todo = kChunkSize;
+    if (todo > out_len) {
+      todo = out_len;
+    }
+
+    todo &= ~(AES_BLOCK_SIZE-1);
+    const size_t num_blocks = todo / AES_BLOCK_SIZE;
+
+    if (drbg->ctr) {
+      OPENSSL_memset(out, 0, todo);
+      ctr32_add(drbg, 1);
+      drbg->ctr(out, out, num_blocks, &drbg->ks, drbg->counter.bytes);
+      ctr32_add(drbg, num_blocks - 1);
+    } else {
+      for (size_t i = 0; i < todo; i += AES_BLOCK_SIZE) {
+        ctr32_add(drbg, 1);
+        drbg->block(drbg->counter.bytes, out + i, &drbg->ks);
+      }
+    }
+
+    out += todo;
+    out_len -= todo;
+  }
+
+  if (out_len > 0) {
+    uint8_t block[AES_BLOCK_SIZE];
+    ctr32_add(drbg, 1);
+    drbg->block(drbg->counter.bytes, block, &drbg->ks);
+
+    OPENSSL_memcpy(out, block, out_len);
+  }
+
+  // Right-padding |additional_data| in step 2.2 is handled implicitly by
+  // |ctr_drbg_update|, to save a copy.
+  if (!ctr_drbg_update(drbg, additional_data, additional_data_len)) {
+    return 0;
+  }
+
+  drbg->reseed_counter++;
+  return 1;
+}
+
+void CTR_DRBG_clear(CTR_DRBG_STATE *drbg) {
+  OPENSSL_cleanse(drbg, sizeof(CTR_DRBG_STATE));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c.grpc_back
new file mode 100644
index 0000000..b2fda1d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/ctrdrbg.c.grpc_back	
@@ -0,0 +1,202 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#include <openssl/type_check.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../cipher/internal.h"
+
+
+// Section references in this file refer to SP 800-90Ar1:
+// http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-90Ar1.pdf
+
+// See table 3.
+static const uint64_t kMaxReseedCount = UINT64_C(1) << 48;
+
+int CTR_DRBG_init(CTR_DRBG_STATE *drbg,
+                  const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                  const uint8_t *personalization, size_t personalization_len) {
+  // Section 10.2.1.3.1
+  if (personalization_len > CTR_DRBG_ENTROPY_LEN) {
+    return 0;
+  }
+
+  uint8_t seed_material[CTR_DRBG_ENTROPY_LEN];
+  OPENSSL_memcpy(seed_material, entropy, CTR_DRBG_ENTROPY_LEN);
+
+  for (size_t i = 0; i < personalization_len; i++) {
+    seed_material[i] ^= personalization[i];
+  }
+
+  // Section 10.2.1.2
+
+  // kInitMask is the result of encrypting blocks with big-endian value 1, 2
+  // and 3 with the all-zero AES-256 key.
+  static const uint8_t kInitMask[CTR_DRBG_ENTROPY_LEN] = {
+      0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9, 0xa9, 0x63, 0xb4, 0xf1,
+      0xc4, 0xcb, 0x73, 0x8b, 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
+      0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18, 0x72, 0x60, 0x03, 0xca,
+      0x37, 0xa6, 0x2a, 0x74, 0xd1, 0xa2, 0xf5, 0x8e, 0x75, 0x06, 0x35, 0x8e,
+  };
+
+  for (size_t i = 0; i < sizeof(kInitMask); i++) {
+    seed_material[i] ^= kInitMask[i];
+  }
+
+  drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, seed_material, 32);
+  OPENSSL_memcpy(drbg->counter.bytes, seed_material + 32, 16);
+  drbg->reseed_counter = 1;
+
+  return 1;
+}
+
+OPENSSL_STATIC_ASSERT(CTR_DRBG_ENTROPY_LEN % AES_BLOCK_SIZE == 0,
+                      "not a multiple of AES block size");
+
+// ctr_inc adds |n| to the last four bytes of |drbg->counter|, treated as a
+// big-endian number.
+static void ctr32_add(CTR_DRBG_STATE *drbg, uint32_t n) {
+  drbg->counter.words[3] =
+      CRYPTO_bswap4(CRYPTO_bswap4(drbg->counter.words[3]) + n);
+}
+
+static int ctr_drbg_update(CTR_DRBG_STATE *drbg, const uint8_t *data,
+                           size_t data_len) {
+  // Per section 10.2.1.2, |data_len| must be |CTR_DRBG_ENTROPY_LEN|. Here, we
+  // allow shorter inputs and right-pad them with zeros. This is equivalent to
+  // the specified algorithm but saves a copy in |CTR_DRBG_generate|.
+  if (data_len > CTR_DRBG_ENTROPY_LEN) {
+    return 0;
+  }
+
+  uint8_t temp[CTR_DRBG_ENTROPY_LEN];
+  for (size_t i = 0; i < CTR_DRBG_ENTROPY_LEN; i += AES_BLOCK_SIZE) {
+    ctr32_add(drbg, 1);
+    drbg->block(drbg->counter.bytes, temp + i, &drbg->ks);
+  }
+
+  for (size_t i = 0; i < data_len; i++) {
+    temp[i] ^= data[i];
+  }
+
+  drbg->ctr = aes_ctr_set_key(&drbg->ks, NULL, &drbg->block, temp, 32);
+  OPENSSL_memcpy(drbg->counter.bytes, temp + 32, 16);
+
+  return 1;
+}
+
+int CTR_DRBG_reseed(CTR_DRBG_STATE *drbg,
+                    const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                    const uint8_t *additional_data,
+                    size_t additional_data_len) {
+  // Section 10.2.1.4
+  uint8_t entropy_copy[CTR_DRBG_ENTROPY_LEN];
+
+  if (additional_data_len > 0) {
+    if (additional_data_len > CTR_DRBG_ENTROPY_LEN) {
+      return 0;
+    }
+
+    OPENSSL_memcpy(entropy_copy, entropy, CTR_DRBG_ENTROPY_LEN);
+    for (size_t i = 0; i < additional_data_len; i++) {
+      entropy_copy[i] ^= additional_data[i];
+    }
+
+    entropy = entropy_copy;
+  }
+
+  if (!ctr_drbg_update(drbg, entropy, CTR_DRBG_ENTROPY_LEN)) {
+    return 0;
+  }
+
+  drbg->reseed_counter = 1;
+
+  return 1;
+}
+
+int CTR_DRBG_generate(CTR_DRBG_STATE *drbg, uint8_t *out, size_t out_len,
+                      const uint8_t *additional_data,
+                      size_t additional_data_len) {
+  // See 9.3.1
+  if (out_len > CTR_DRBG_MAX_GENERATE_LENGTH) {
+    return 0;
+  }
+
+  // See 10.2.1.5.1
+  if (drbg->reseed_counter > kMaxReseedCount) {
+    return 0;
+  }
+
+  if (additional_data_len != 0 &&
+      !ctr_drbg_update(drbg, additional_data, additional_data_len)) {
+    return 0;
+  }
+
+  // kChunkSize is used to interact better with the cache. Since the AES-CTR
+  // code assumes that it's encrypting rather than just writing keystream, the
+  // buffer has to be zeroed first. Without chunking, large reads would zero
+  // the whole buffer, flushing the L1 cache, and then do another pass (missing
+  // the cache every time) to “encrypt” it. The code can avoid this by
+  // chunking.
+  static const size_t kChunkSize = 8 * 1024;
+
+  while (out_len >= AES_BLOCK_SIZE) {
+    size_t todo = kChunkSize;
+    if (todo > out_len) {
+      todo = out_len;
+    }
+
+    todo &= ~(AES_BLOCK_SIZE-1);
+    const size_t num_blocks = todo / AES_BLOCK_SIZE;
+
+    if (drbg->ctr) {
+      OPENSSL_memset(out, 0, todo);
+      ctr32_add(drbg, 1);
+      drbg->ctr(out, out, num_blocks, &drbg->ks, drbg->counter.bytes);
+      ctr32_add(drbg, num_blocks - 1);
+    } else {
+      for (size_t i = 0; i < todo; i += AES_BLOCK_SIZE) {
+        ctr32_add(drbg, 1);
+        drbg->block(drbg->counter.bytes, out + i, &drbg->ks);
+      }
+    }
+
+    out += todo;
+    out_len -= todo;
+  }
+
+  if (out_len > 0) {
+    uint8_t block[AES_BLOCK_SIZE];
+    ctr32_add(drbg, 1);
+    drbg->block(drbg->counter.bytes, block, &drbg->ks);
+
+    OPENSSL_memcpy(out, block, out_len);
+  }
+
+  // Right-padding |additional_data| in step 2.2 is handled implicitly by
+  // |ctr_drbg_update|, to save a copy.
+  if (!ctr_drbg_update(drbg, additional_data, additional_data_len)) {
+    return 0;
+  }
+
+  drbg->reseed_counter++;
+  return 1;
+}
+
+void CTR_DRBG_clear(CTR_DRBG_STATE *drbg) {
+  OPENSSL_cleanse(drbg, sizeof(CTR_DRBG_STATE));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h
new file mode 100644
index 0000000..fdce899
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h	
@@ -0,0 +1,127 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
+
+#include <openssl_grpc/aes.h>
+#include <openssl_grpc/cpu.h>
+
+#include "../../internal.h"
+#include "../modes/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_WINDOWS) && !defined(OPENSSL_FUCHSIA) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE) && !defined(OPENSSL_TRUSTY)
+#define OPENSSL_URANDOM
+#endif
+
+// RAND_bytes_with_additional_data samples from the RNG after mixing 32 bytes
+// from |user_additional_data| in.
+void RAND_bytes_with_additional_data(uint8_t *out, size_t out_len,
+                                     const uint8_t user_additional_data[32]);
+
+// CRYPTO_sysrand fills |len| bytes at |buf| with entropy from the operating
+// system.
+void CRYPTO_sysrand(uint8_t *buf, size_t len);
+
+#if defined(OPENSSL_URANDOM) || defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// CRYPTO_sysrand_for_seed fills |len| bytes at |buf| with entropy from the
+// operating system. It may draw from the |GRND_RANDOM| pool on Android,
+// depending on the vendor's configuration.
+void CRYPTO_sysrand_for_seed(uint8_t *buf, size_t len);
+
+// CRYPTO_sysrand_if_available fills |len| bytes at |buf| with entropy from the
+// operating system, if the entropy pool is initialized. If it is uninitialized,
+// it will not block and will instead fill |buf| with all zeros or early
+// /dev/urandom output.
+void CRYPTO_sysrand_if_available(uint8_t *buf, size_t len);
+#endif
+
+// rand_fork_unsafe_buffering_enabled returns whether fork-unsafe buffering has
+// been enabled via |RAND_enable_fork_unsafe_buffering|.
+int rand_fork_unsafe_buffering_enabled(void);
+
+// CTR_DRBG_STATE contains the state of a CTR_DRBG based on AES-256. See SP
+// 800-90Ar1.
+typedef struct {
+  AES_KEY ks;
+  block128_f block;
+  ctr128_f ctr;
+  union {
+    uint8_t bytes[16];
+    uint32_t words[4];
+  } counter;
+  uint64_t reseed_counter;
+} CTR_DRBG_STATE;
+
+// See SP 800-90Ar1, table 3.
+#define CTR_DRBG_ENTROPY_LEN 48
+#define CTR_DRBG_MAX_GENERATE_LENGTH 65536
+
+// CTR_DRBG_init initialises |*drbg| given |CTR_DRBG_ENTROPY_LEN| bytes of
+// entropy in |entropy| and, optionally, a personalization string up to
+// |CTR_DRBG_ENTROPY_LEN| bytes in length. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int CTR_DRBG_init(CTR_DRBG_STATE *drbg,
+                                 const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                                 const uint8_t *personalization,
+                                 size_t personalization_len);
+
+// CTR_DRBG_reseed reseeds |drbg| given |CTR_DRBG_ENTROPY_LEN| bytes of entropy
+// in |entropy| and, optionally, up to |CTR_DRBG_ENTROPY_LEN| bytes of
+// additional data. It returns one on success or zero on error.
+OPENSSL_EXPORT int CTR_DRBG_reseed(CTR_DRBG_STATE *drbg,
+                                   const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                                   const uint8_t *additional_data,
+                                   size_t additional_data_len);
+
+// CTR_DRBG_generate processes to up |CTR_DRBG_ENTROPY_LEN| bytes of additional
+// data (if any) and then writes |out_len| random bytes to |out|, where
+// |out_len| <= |CTR_DRBG_MAX_GENERATE_LENGTH|. It returns one on success or
+// zero on error.
+OPENSSL_EXPORT int CTR_DRBG_generate(CTR_DRBG_STATE *drbg, uint8_t *out,
+                                     size_t out_len,
+                                     const uint8_t *additional_data,
+                                     size_t additional_data_len);
+
+// CTR_DRBG_clear zeroises the state of |drbg|.
+OPENSSL_EXPORT void CTR_DRBG_clear(CTR_DRBG_STATE *drbg);
+
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM)
+OPENSSL_INLINE int have_rdrand(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1u << 30)) != 0;
+}
+
+// CRYPTO_rdrand writes eight bytes of random data from the hardware RNG to
+// |out|. It returns one on success or zero on hardware failure.
+int CRYPTO_rdrand(uint8_t out[8]);
+
+// CRYPTO_rdrand_multiple8_buf fills |len| bytes at |buf| with random data from
+// the hardware RNG. The |len| argument must be a multiple of eight. It returns
+// one on success and zero on hardware failure.
+int CRYPTO_rdrand_multiple8_buf(uint8_t *buf, size_t len);
+#endif  // OPENSSL_X86_64 && !OPENSSL_NO_ASM
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h.grpc_back
new file mode 100644
index 0000000..280aae4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/internal.h.grpc_back	
@@ -0,0 +1,127 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
+
+#include <openssl/aes.h>
+#include <openssl/cpu.h>
+
+#include "../../internal.h"
+#include "../modes/internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_WINDOWS) && !defined(OPENSSL_FUCHSIA) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE) && !defined(OPENSSL_TRUSTY)
+#define OPENSSL_URANDOM
+#endif
+
+// RAND_bytes_with_additional_data samples from the RNG after mixing 32 bytes
+// from |user_additional_data| in.
+void RAND_bytes_with_additional_data(uint8_t *out, size_t out_len,
+                                     const uint8_t user_additional_data[32]);
+
+// CRYPTO_sysrand fills |len| bytes at |buf| with entropy from the operating
+// system.
+void CRYPTO_sysrand(uint8_t *buf, size_t len);
+
+#if defined(OPENSSL_URANDOM) || defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// CRYPTO_sysrand_for_seed fills |len| bytes at |buf| with entropy from the
+// operating system. It may draw from the |GRND_RANDOM| pool on Android,
+// depending on the vendor's configuration.
+void CRYPTO_sysrand_for_seed(uint8_t *buf, size_t len);
+
+// CRYPTO_sysrand_if_available fills |len| bytes at |buf| with entropy from the
+// operating system, if the entropy pool is initialized. If it is uninitialized,
+// it will not block and will instead fill |buf| with all zeros or early
+// /dev/urandom output.
+void CRYPTO_sysrand_if_available(uint8_t *buf, size_t len);
+#endif
+
+// rand_fork_unsafe_buffering_enabled returns whether fork-unsafe buffering has
+// been enabled via |RAND_enable_fork_unsafe_buffering|.
+int rand_fork_unsafe_buffering_enabled(void);
+
+// CTR_DRBG_STATE contains the state of a CTR_DRBG based on AES-256. See SP
+// 800-90Ar1.
+typedef struct {
+  AES_KEY ks;
+  block128_f block;
+  ctr128_f ctr;
+  union {
+    uint8_t bytes[16];
+    uint32_t words[4];
+  } counter;
+  uint64_t reseed_counter;
+} CTR_DRBG_STATE;
+
+// See SP 800-90Ar1, table 3.
+#define CTR_DRBG_ENTROPY_LEN 48
+#define CTR_DRBG_MAX_GENERATE_LENGTH 65536
+
+// CTR_DRBG_init initialises |*drbg| given |CTR_DRBG_ENTROPY_LEN| bytes of
+// entropy in |entropy| and, optionally, a personalization string up to
+// |CTR_DRBG_ENTROPY_LEN| bytes in length. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int CTR_DRBG_init(CTR_DRBG_STATE *drbg,
+                                 const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                                 const uint8_t *personalization,
+                                 size_t personalization_len);
+
+// CTR_DRBG_reseed reseeds |drbg| given |CTR_DRBG_ENTROPY_LEN| bytes of entropy
+// in |entropy| and, optionally, up to |CTR_DRBG_ENTROPY_LEN| bytes of
+// additional data. It returns one on success or zero on error.
+OPENSSL_EXPORT int CTR_DRBG_reseed(CTR_DRBG_STATE *drbg,
+                                   const uint8_t entropy[CTR_DRBG_ENTROPY_LEN],
+                                   const uint8_t *additional_data,
+                                   size_t additional_data_len);
+
+// CTR_DRBG_generate processes to up |CTR_DRBG_ENTROPY_LEN| bytes of additional
+// data (if any) and then writes |out_len| random bytes to |out|, where
+// |out_len| <= |CTR_DRBG_MAX_GENERATE_LENGTH|. It returns one on success or
+// zero on error.
+OPENSSL_EXPORT int CTR_DRBG_generate(CTR_DRBG_STATE *drbg, uint8_t *out,
+                                     size_t out_len,
+                                     const uint8_t *additional_data,
+                                     size_t additional_data_len);
+
+// CTR_DRBG_clear zeroises the state of |drbg|.
+OPENSSL_EXPORT void CTR_DRBG_clear(CTR_DRBG_STATE *drbg);
+
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM)
+OPENSSL_INLINE int have_rdrand(void) {
+  return (OPENSSL_ia32cap_get()[1] & (1u << 30)) != 0;
+}
+
+// CRYPTO_rdrand writes eight bytes of random data from the hardware RNG to
+// |out|. It returns one on success or zero on hardware failure.
+int CRYPTO_rdrand(uint8_t out[8]);
+
+// CRYPTO_rdrand_multiple8_buf fills |len| bytes at |buf| with random data from
+// the hardware RNG. The |len| argument must be a multiple of eight. It returns
+// one on success and zero on hardware failure.
+int CRYPTO_rdrand_multiple8_buf(uint8_t *buf, size_t len);
+#endif  // OPENSSL_X86_64 && !OPENSSL_NO_ASM
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c
new file mode 100644
index 0000000..ad1e59b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c	
@@ -0,0 +1,363 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#if defined(BORINGSSL_FIPS)
+#include <unistd.h>
+#endif
+
+#include <openssl_grpc/chacha.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../delocate.h"
+
+
+// It's assumed that the operating system always has an unfailing source of
+// entropy which is accessed via |CRYPTO_sysrand[_for_seed]|. (If the operating
+// system entropy source fails, it's up to |CRYPTO_sysrand| to abort the
+// process—we don't try to handle it.)
+//
+// In addition, the hardware may provide a low-latency RNG. Intel's rdrand
+// instruction is the canonical example of this. When a hardware RNG is
+// available we don't need to worry about an RNG failure arising from fork()ing
+// the process or moving a VM, so we can keep thread-local RNG state and use it
+// as an additional-data input to CTR-DRBG.
+//
+// (We assume that the OS entropy is safe from fork()ing and VM duplication.
+// This might be a bit of a leap of faith, esp on Windows, but there's nothing
+// that we can do about it.)
+
+// kReseedInterval is the number of generate calls made to CTR-DRBG before
+// reseeding.
+static const unsigned kReseedInterval = 4096;
+
+// CRNGT_BLOCK_SIZE is the number of bytes in a “block” for the purposes of the
+// continuous random number generator test in FIPS 140-2, section 4.9.2.
+#define CRNGT_BLOCK_SIZE 16
+
+// rand_thread_state contains the per-thread state for the RNG.
+struct rand_thread_state {
+  CTR_DRBG_STATE drbg;
+  // calls is the number of generate calls made on |drbg| since it was last
+  // (re)seeded. This is bound by |kReseedInterval|.
+  unsigned calls;
+  // last_block_valid is non-zero iff |last_block| contains data from
+  // |CRYPTO_sysrand_for_seed|.
+  int last_block_valid;
+
+#if defined(BORINGSSL_FIPS)
+  // last_block contains the previous block from |CRYPTO_sysrand_for_seed|.
+  uint8_t last_block[CRNGT_BLOCK_SIZE];
+  // next and prev form a NULL-terminated, double-linked list of all states in
+  // a process.
+  struct rand_thread_state *next, *prev;
+#endif
+};
+
+#if defined(BORINGSSL_FIPS)
+// thread_states_list is the head of a linked-list of all |rand_thread_state|
+// objects in the process, one per thread. This is needed because FIPS requires
+// that they be zeroed on process exit, but thread-local destructors aren't
+// called when the whole process is exiting.
+DEFINE_BSS_GET(struct rand_thread_state *, thread_states_list);
+DEFINE_STATIC_MUTEX(thread_states_list_lock);
+
+static void rand_thread_state_clear_all(void) __attribute__((destructor));
+static void rand_thread_state_clear_all(void) {
+  CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+  for (struct rand_thread_state *cur = *thread_states_list_bss_get();
+       cur != NULL; cur = cur->next) {
+    CTR_DRBG_clear(&cur->drbg);
+  }
+  // |thread_states_list_lock is deliberately left locked so that any threads
+  // that are still running will hang if they try to call |RAND_bytes|.
+}
+#endif
+
+// rand_thread_state_free frees a |rand_thread_state|. This is called when a
+// thread exits.
+static void rand_thread_state_free(void *state_in) {
+  struct rand_thread_state *state = state_in;
+
+  if (state_in == NULL) {
+    return;
+  }
+
+#if defined(BORINGSSL_FIPS)
+  CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+
+  if (state->prev != NULL) {
+    state->prev->next = state->next;
+  } else {
+    *thread_states_list_bss_get() = state->next;
+  }
+
+  if (state->next != NULL) {
+    state->next->prev = state->prev;
+  }
+
+  CRYPTO_STATIC_MUTEX_unlock_write(thread_states_list_lock_bss_get());
+
+  CTR_DRBG_clear(&state->drbg);
+#endif
+
+  OPENSSL_free(state);
+}
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+static int hwrand(uint8_t *buf, const size_t len) {
+  if (!have_rdrand()) {
+    return 0;
+  }
+
+  const size_t len_multiple8 = len & ~7;
+  if (!CRYPTO_rdrand_multiple8_buf(buf, len_multiple8)) {
+    return 0;
+  }
+  const size_t remainder = len - len_multiple8;
+
+  if (remainder != 0) {
+    assert(remainder < 8);
+
+    uint8_t rand_buf[8];
+    if (!CRYPTO_rdrand(rand_buf)) {
+      return 0;
+    }
+    OPENSSL_memcpy(buf + len_multiple8, rand_buf, remainder);
+  }
+
+#if defined(BORINGSSL_FIPS_BREAK_CRNG)
+  // This breaks the "continuous random number generator test" defined in FIPS
+  // 140-2, section 4.9.2, and implemented in rand_get_seed().
+  OPENSSL_memset(buf, 0, len);
+#endif
+
+  return 1;
+}
+
+#else
+
+static int hwrand(uint8_t *buf, size_t len) {
+  return 0;
+}
+
+#endif
+
+#if defined(BORINGSSL_FIPS)
+
+static void rand_get_seed(struct rand_thread_state *state,
+                          uint8_t seed[CTR_DRBG_ENTROPY_LEN]) {
+  if (!state->last_block_valid) {
+    if (!hwrand(state->last_block, sizeof(state->last_block))) {
+      CRYPTO_sysrand_for_seed(state->last_block, sizeof(state->last_block));
+    }
+    state->last_block_valid = 1;
+  }
+
+  // We overread from /dev/urandom or RDRAND by a factor of 10 and XOR to
+  // whiten.
+#define FIPS_OVERREAD 10
+  uint8_t entropy[CTR_DRBG_ENTROPY_LEN * FIPS_OVERREAD];
+
+  int used_hwrand = hwrand(entropy, sizeof(entropy));
+  if (!used_hwrand) {
+    CRYPTO_sysrand_for_seed(entropy, sizeof(entropy));
+  }
+
+  // See FIPS 140-2, section 4.9.2. This is the “continuous random number
+  // generator test” which causes the program to randomly abort. Hopefully the
+  // rate of failure is small enough not to be a problem in practice.
+  if (CRYPTO_memcmp(state->last_block, entropy, CRNGT_BLOCK_SIZE) == 0) {
+    fprintf(stderr, "CRNGT failed.\n");
+    BORINGSSL_FIPS_abort();
+  }
+
+  for (size_t i = CRNGT_BLOCK_SIZE; i < sizeof(entropy);
+       i += CRNGT_BLOCK_SIZE) {
+    if (CRYPTO_memcmp(entropy + i - CRNGT_BLOCK_SIZE, entropy + i,
+                      CRNGT_BLOCK_SIZE) == 0) {
+      fprintf(stderr, "CRNGT failed.\n");
+      BORINGSSL_FIPS_abort();
+    }
+  }
+  OPENSSL_memcpy(state->last_block,
+                 entropy + sizeof(entropy) - CRNGT_BLOCK_SIZE,
+                 CRNGT_BLOCK_SIZE);
+
+  OPENSSL_memcpy(seed, entropy, CTR_DRBG_ENTROPY_LEN);
+
+  for (size_t i = 1; i < FIPS_OVERREAD; i++) {
+    for (size_t j = 0; j < CTR_DRBG_ENTROPY_LEN; j++) {
+      seed[j] ^= entropy[CTR_DRBG_ENTROPY_LEN * i + j];
+    }
+  }
+
+#if defined(OPENSSL_URANDOM)
+  // If we used RDRAND, also opportunistically read from the system. This avoids
+  // solely relying on the hardware once the entropy pool has been initialized.
+  if (used_hwrand) {
+    CRYPTO_sysrand_if_available(entropy, CTR_DRBG_ENTROPY_LEN);
+    for (size_t i = 0; i < CTR_DRBG_ENTROPY_LEN; i++) {
+      seed[i] ^= entropy[i];
+    }
+  }
+#endif
+}
+
+#else
+
+static void rand_get_seed(struct rand_thread_state *state,
+                          uint8_t seed[CTR_DRBG_ENTROPY_LEN]) {
+  // If not in FIPS mode, we don't overread from the system entropy source and
+  // we don't depend only on the hardware RDRAND.
+  CRYPTO_sysrand(seed, CTR_DRBG_ENTROPY_LEN);
+}
+
+#endif
+
+void RAND_bytes_with_additional_data(uint8_t *out, size_t out_len,
+                                     const uint8_t user_additional_data[32]) {
+  if (out_len == 0) {
+    return;
+  }
+
+  // Additional data is mixed into every CTR-DRBG call to protect, as best we
+  // can, against forks & VM clones. We do not over-read this information and
+  // don't reseed with it so, from the point of view of FIPS, this doesn't
+  // provide “prediction resistance”. But, in practice, it does.
+  uint8_t additional_data[32];
+  if (!hwrand(additional_data, sizeof(additional_data))) {
+    // Without a hardware RNG to save us from address-space duplication, the OS
+    // entropy is used. This can be expensive (one read per |RAND_bytes| call)
+    // and so can be disabled by applications that we have ensured don't fork
+    // and aren't at risk of VM cloning.
+    if (!rand_fork_unsafe_buffering_enabled()) {
+      CRYPTO_sysrand(additional_data, sizeof(additional_data));
+    } else {
+      OPENSSL_memset(additional_data, 0, sizeof(additional_data));
+    }
+  }
+
+  for (size_t i = 0; i < sizeof(additional_data); i++) {
+    additional_data[i] ^= user_additional_data[i];
+  }
+
+  struct rand_thread_state stack_state;
+  struct rand_thread_state *state =
+      CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_RAND);
+
+  if (state == NULL) {
+    state = OPENSSL_malloc(sizeof(struct rand_thread_state));
+    if (state == NULL ||
+        !CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_RAND, state,
+                                 rand_thread_state_free)) {
+      // If the system is out of memory, use an ephemeral state on the
+      // stack.
+      state = &stack_state;
+    }
+
+    state->last_block_valid = 0;
+    uint8_t seed[CTR_DRBG_ENTROPY_LEN];
+    rand_get_seed(state, seed);
+    if (!CTR_DRBG_init(&state->drbg, seed, NULL, 0)) {
+      abort();
+    }
+    state->calls = 0;
+
+#if defined(BORINGSSL_FIPS)
+    if (state != &stack_state) {
+      CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+      struct rand_thread_state **states_list = thread_states_list_bss_get();
+      state->next = *states_list;
+      if (state->next != NULL) {
+        state->next->prev = state;
+      }
+      state->prev = NULL;
+      *states_list = state;
+      CRYPTO_STATIC_MUTEX_unlock_write(thread_states_list_lock_bss_get());
+    }
+#endif
+  }
+
+  if (state->calls >= kReseedInterval) {
+    uint8_t seed[CTR_DRBG_ENTROPY_LEN];
+    rand_get_seed(state, seed);
+#if defined(BORINGSSL_FIPS)
+    // Take a read lock around accesses to |state->drbg|. This is needed to
+    // avoid returning bad entropy if we race with
+    // |rand_thread_state_clear_all|.
+    //
+    // This lock must be taken after any calls to |CRYPTO_sysrand| to avoid a
+    // bug on ppc64le. glibc may implement pthread locks by wrapping user code
+    // in a hardware transaction, but, on some older versions of glibc and the
+    // kernel, syscalls made with |syscall| did not abort the transaction.
+    CRYPTO_STATIC_MUTEX_lock_read(thread_states_list_lock_bss_get());
+#endif
+    if (!CTR_DRBG_reseed(&state->drbg, seed, NULL, 0)) {
+      abort();
+    }
+    state->calls = 0;
+  } else {
+#if defined(BORINGSSL_FIPS)
+    CRYPTO_STATIC_MUTEX_lock_read(thread_states_list_lock_bss_get());
+#endif
+  }
+
+  int first_call = 1;
+  while (out_len > 0) {
+    size_t todo = out_len;
+    if (todo > CTR_DRBG_MAX_GENERATE_LENGTH) {
+      todo = CTR_DRBG_MAX_GENERATE_LENGTH;
+    }
+
+    if (!CTR_DRBG_generate(&state->drbg, out, todo, additional_data,
+                           first_call ? sizeof(additional_data) : 0)) {
+      abort();
+    }
+
+    out += todo;
+    out_len -= todo;
+    // Though we only check before entering the loop, this cannot add enough to
+    // overflow a |size_t|.
+    state->calls++;
+    first_call = 0;
+  }
+
+  if (state == &stack_state) {
+    CTR_DRBG_clear(&state->drbg);
+  }
+
+#if defined(BORINGSSL_FIPS)
+  CRYPTO_STATIC_MUTEX_unlock_read(thread_states_list_lock_bss_get());
+#endif
+}
+
+int RAND_bytes(uint8_t *out, size_t out_len) {
+  static const uint8_t kZeroAdditionalData[32] = {0};
+  RAND_bytes_with_additional_data(out, out_len, kZeroAdditionalData);
+  return 1;
+}
+
+int RAND_pseudo_bytes(uint8_t *buf, size_t len) {
+  return RAND_bytes(buf, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c.grpc_back
new file mode 100644
index 0000000..87d7b30
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/rand.c.grpc_back	
@@ -0,0 +1,363 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#if defined(BORINGSSL_FIPS)
+#include <unistd.h>
+#endif
+
+#include <openssl/chacha.h>
+#include <openssl/cpu.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../delocate.h"
+
+
+// It's assumed that the operating system always has an unfailing source of
+// entropy which is accessed via |CRYPTO_sysrand[_for_seed]|. (If the operating
+// system entropy source fails, it's up to |CRYPTO_sysrand| to abort the
+// process—we don't try to handle it.)
+//
+// In addition, the hardware may provide a low-latency RNG. Intel's rdrand
+// instruction is the canonical example of this. When a hardware RNG is
+// available we don't need to worry about an RNG failure arising from fork()ing
+// the process or moving a VM, so we can keep thread-local RNG state and use it
+// as an additional-data input to CTR-DRBG.
+//
+// (We assume that the OS entropy is safe from fork()ing and VM duplication.
+// This might be a bit of a leap of faith, esp on Windows, but there's nothing
+// that we can do about it.)
+
+// kReseedInterval is the number of generate calls made to CTR-DRBG before
+// reseeding.
+static const unsigned kReseedInterval = 4096;
+
+// CRNGT_BLOCK_SIZE is the number of bytes in a “block” for the purposes of the
+// continuous random number generator test in FIPS 140-2, section 4.9.2.
+#define CRNGT_BLOCK_SIZE 16
+
+// rand_thread_state contains the per-thread state for the RNG.
+struct rand_thread_state {
+  CTR_DRBG_STATE drbg;
+  // calls is the number of generate calls made on |drbg| since it was last
+  // (re)seeded. This is bound by |kReseedInterval|.
+  unsigned calls;
+  // last_block_valid is non-zero iff |last_block| contains data from
+  // |CRYPTO_sysrand_for_seed|.
+  int last_block_valid;
+
+#if defined(BORINGSSL_FIPS)
+  // last_block contains the previous block from |CRYPTO_sysrand_for_seed|.
+  uint8_t last_block[CRNGT_BLOCK_SIZE];
+  // next and prev form a NULL-terminated, double-linked list of all states in
+  // a process.
+  struct rand_thread_state *next, *prev;
+#endif
+};
+
+#if defined(BORINGSSL_FIPS)
+// thread_states_list is the head of a linked-list of all |rand_thread_state|
+// objects in the process, one per thread. This is needed because FIPS requires
+// that they be zeroed on process exit, but thread-local destructors aren't
+// called when the whole process is exiting.
+DEFINE_BSS_GET(struct rand_thread_state *, thread_states_list);
+DEFINE_STATIC_MUTEX(thread_states_list_lock);
+
+static void rand_thread_state_clear_all(void) __attribute__((destructor));
+static void rand_thread_state_clear_all(void) {
+  CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+  for (struct rand_thread_state *cur = *thread_states_list_bss_get();
+       cur != NULL; cur = cur->next) {
+    CTR_DRBG_clear(&cur->drbg);
+  }
+  // |thread_states_list_lock is deliberately left locked so that any threads
+  // that are still running will hang if they try to call |RAND_bytes|.
+}
+#endif
+
+// rand_thread_state_free frees a |rand_thread_state|. This is called when a
+// thread exits.
+static void rand_thread_state_free(void *state_in) {
+  struct rand_thread_state *state = state_in;
+
+  if (state_in == NULL) {
+    return;
+  }
+
+#if defined(BORINGSSL_FIPS)
+  CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+
+  if (state->prev != NULL) {
+    state->prev->next = state->next;
+  } else {
+    *thread_states_list_bss_get() = state->next;
+  }
+
+  if (state->next != NULL) {
+    state->next->prev = state->prev;
+  }
+
+  CRYPTO_STATIC_MUTEX_unlock_write(thread_states_list_lock_bss_get());
+
+  CTR_DRBG_clear(&state->drbg);
+#endif
+
+  OPENSSL_free(state);
+}
+
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+static int hwrand(uint8_t *buf, const size_t len) {
+  if (!have_rdrand()) {
+    return 0;
+  }
+
+  const size_t len_multiple8 = len & ~7;
+  if (!CRYPTO_rdrand_multiple8_buf(buf, len_multiple8)) {
+    return 0;
+  }
+  const size_t remainder = len - len_multiple8;
+
+  if (remainder != 0) {
+    assert(remainder < 8);
+
+    uint8_t rand_buf[8];
+    if (!CRYPTO_rdrand(rand_buf)) {
+      return 0;
+    }
+    OPENSSL_memcpy(buf + len_multiple8, rand_buf, remainder);
+  }
+
+#if defined(BORINGSSL_FIPS_BREAK_CRNG)
+  // This breaks the "continuous random number generator test" defined in FIPS
+  // 140-2, section 4.9.2, and implemented in rand_get_seed().
+  OPENSSL_memset(buf, 0, len);
+#endif
+
+  return 1;
+}
+
+#else
+
+static int hwrand(uint8_t *buf, size_t len) {
+  return 0;
+}
+
+#endif
+
+#if defined(BORINGSSL_FIPS)
+
+static void rand_get_seed(struct rand_thread_state *state,
+                          uint8_t seed[CTR_DRBG_ENTROPY_LEN]) {
+  if (!state->last_block_valid) {
+    if (!hwrand(state->last_block, sizeof(state->last_block))) {
+      CRYPTO_sysrand_for_seed(state->last_block, sizeof(state->last_block));
+    }
+    state->last_block_valid = 1;
+  }
+
+  // We overread from /dev/urandom or RDRAND by a factor of 10 and XOR to
+  // whiten.
+#define FIPS_OVERREAD 10
+  uint8_t entropy[CTR_DRBG_ENTROPY_LEN * FIPS_OVERREAD];
+
+  int used_hwrand = hwrand(entropy, sizeof(entropy));
+  if (!used_hwrand) {
+    CRYPTO_sysrand_for_seed(entropy, sizeof(entropy));
+  }
+
+  // See FIPS 140-2, section 4.9.2. This is the “continuous random number
+  // generator test” which causes the program to randomly abort. Hopefully the
+  // rate of failure is small enough not to be a problem in practice.
+  if (CRYPTO_memcmp(state->last_block, entropy, CRNGT_BLOCK_SIZE) == 0) {
+    fprintf(stderr, "CRNGT failed.\n");
+    BORINGSSL_FIPS_abort();
+  }
+
+  for (size_t i = CRNGT_BLOCK_SIZE; i < sizeof(entropy);
+       i += CRNGT_BLOCK_SIZE) {
+    if (CRYPTO_memcmp(entropy + i - CRNGT_BLOCK_SIZE, entropy + i,
+                      CRNGT_BLOCK_SIZE) == 0) {
+      fprintf(stderr, "CRNGT failed.\n");
+      BORINGSSL_FIPS_abort();
+    }
+  }
+  OPENSSL_memcpy(state->last_block,
+                 entropy + sizeof(entropy) - CRNGT_BLOCK_SIZE,
+                 CRNGT_BLOCK_SIZE);
+
+  OPENSSL_memcpy(seed, entropy, CTR_DRBG_ENTROPY_LEN);
+
+  for (size_t i = 1; i < FIPS_OVERREAD; i++) {
+    for (size_t j = 0; j < CTR_DRBG_ENTROPY_LEN; j++) {
+      seed[j] ^= entropy[CTR_DRBG_ENTROPY_LEN * i + j];
+    }
+  }
+
+#if defined(OPENSSL_URANDOM)
+  // If we used RDRAND, also opportunistically read from the system. This avoids
+  // solely relying on the hardware once the entropy pool has been initialized.
+  if (used_hwrand) {
+    CRYPTO_sysrand_if_available(entropy, CTR_DRBG_ENTROPY_LEN);
+    for (size_t i = 0; i < CTR_DRBG_ENTROPY_LEN; i++) {
+      seed[i] ^= entropy[i];
+    }
+  }
+#endif
+}
+
+#else
+
+static void rand_get_seed(struct rand_thread_state *state,
+                          uint8_t seed[CTR_DRBG_ENTROPY_LEN]) {
+  // If not in FIPS mode, we don't overread from the system entropy source and
+  // we don't depend only on the hardware RDRAND.
+  CRYPTO_sysrand(seed, CTR_DRBG_ENTROPY_LEN);
+}
+
+#endif
+
+void RAND_bytes_with_additional_data(uint8_t *out, size_t out_len,
+                                     const uint8_t user_additional_data[32]) {
+  if (out_len == 0) {
+    return;
+  }
+
+  // Additional data is mixed into every CTR-DRBG call to protect, as best we
+  // can, against forks & VM clones. We do not over-read this information and
+  // don't reseed with it so, from the point of view of FIPS, this doesn't
+  // provide “prediction resistance”. But, in practice, it does.
+  uint8_t additional_data[32];
+  if (!hwrand(additional_data, sizeof(additional_data))) {
+    // Without a hardware RNG to save us from address-space duplication, the OS
+    // entropy is used. This can be expensive (one read per |RAND_bytes| call)
+    // and so can be disabled by applications that we have ensured don't fork
+    // and aren't at risk of VM cloning.
+    if (!rand_fork_unsafe_buffering_enabled()) {
+      CRYPTO_sysrand(additional_data, sizeof(additional_data));
+    } else {
+      OPENSSL_memset(additional_data, 0, sizeof(additional_data));
+    }
+  }
+
+  for (size_t i = 0; i < sizeof(additional_data); i++) {
+    additional_data[i] ^= user_additional_data[i];
+  }
+
+  struct rand_thread_state stack_state;
+  struct rand_thread_state *state =
+      CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_RAND);
+
+  if (state == NULL) {
+    state = OPENSSL_malloc(sizeof(struct rand_thread_state));
+    if (state == NULL ||
+        !CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_RAND, state,
+                                 rand_thread_state_free)) {
+      // If the system is out of memory, use an ephemeral state on the
+      // stack.
+      state = &stack_state;
+    }
+
+    state->last_block_valid = 0;
+    uint8_t seed[CTR_DRBG_ENTROPY_LEN];
+    rand_get_seed(state, seed);
+    if (!CTR_DRBG_init(&state->drbg, seed, NULL, 0)) {
+      abort();
+    }
+    state->calls = 0;
+
+#if defined(BORINGSSL_FIPS)
+    if (state != &stack_state) {
+      CRYPTO_STATIC_MUTEX_lock_write(thread_states_list_lock_bss_get());
+      struct rand_thread_state **states_list = thread_states_list_bss_get();
+      state->next = *states_list;
+      if (state->next != NULL) {
+        state->next->prev = state;
+      }
+      state->prev = NULL;
+      *states_list = state;
+      CRYPTO_STATIC_MUTEX_unlock_write(thread_states_list_lock_bss_get());
+    }
+#endif
+  }
+
+  if (state->calls >= kReseedInterval) {
+    uint8_t seed[CTR_DRBG_ENTROPY_LEN];
+    rand_get_seed(state, seed);
+#if defined(BORINGSSL_FIPS)
+    // Take a read lock around accesses to |state->drbg|. This is needed to
+    // avoid returning bad entropy if we race with
+    // |rand_thread_state_clear_all|.
+    //
+    // This lock must be taken after any calls to |CRYPTO_sysrand| to avoid a
+    // bug on ppc64le. glibc may implement pthread locks by wrapping user code
+    // in a hardware transaction, but, on some older versions of glibc and the
+    // kernel, syscalls made with |syscall| did not abort the transaction.
+    CRYPTO_STATIC_MUTEX_lock_read(thread_states_list_lock_bss_get());
+#endif
+    if (!CTR_DRBG_reseed(&state->drbg, seed, NULL, 0)) {
+      abort();
+    }
+    state->calls = 0;
+  } else {
+#if defined(BORINGSSL_FIPS)
+    CRYPTO_STATIC_MUTEX_lock_read(thread_states_list_lock_bss_get());
+#endif
+  }
+
+  int first_call = 1;
+  while (out_len > 0) {
+    size_t todo = out_len;
+    if (todo > CTR_DRBG_MAX_GENERATE_LENGTH) {
+      todo = CTR_DRBG_MAX_GENERATE_LENGTH;
+    }
+
+    if (!CTR_DRBG_generate(&state->drbg, out, todo, additional_data,
+                           first_call ? sizeof(additional_data) : 0)) {
+      abort();
+    }
+
+    out += todo;
+    out_len -= todo;
+    // Though we only check before entering the loop, this cannot add enough to
+    // overflow a |size_t|.
+    state->calls++;
+    first_call = 0;
+  }
+
+  if (state == &stack_state) {
+    CTR_DRBG_clear(&state->drbg);
+  }
+
+#if defined(BORINGSSL_FIPS)
+  CRYPTO_STATIC_MUTEX_unlock_read(thread_states_list_lock_bss_get());
+#endif
+}
+
+int RAND_bytes(uint8_t *out, size_t out_len) {
+  static const uint8_t kZeroAdditionalData[32] = {0};
+  RAND_bytes_with_additional_data(out, out_len, kZeroAdditionalData);
+  return 1;
+}
+
+int RAND_pseudo_bytes(uint8_t *buf, size_t len) {
+  return RAND_bytes(buf, len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c
new file mode 100644
index 0000000..e2aa36a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c	
@@ -0,0 +1,481 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#if !defined(_GNU_SOURCE)
+#define _GNU_SOURCE  // needed for syscall() on Linux.
+#endif
+
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+
+#if defined(OPENSSL_URANDOM)
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#if defined(OPENSSL_LINUX)
+#if defined(BORINGSSL_FIPS)
+#include <linux/random.h>
+#include <sys/ioctl.h>
+#endif
+#include <sys/syscall.h>
+
+#if defined(OPENSSL_ANDROID)
+#include <sys/system_properties.h>
+#endif
+
+#if !defined(OPENSSL_ANDROID)
+#define OPENSSL_HAS_GETAUXVAL
+#endif
+// glibc prior to 2.16 does not have getauxval and sys/auxv.h. Android has some
+// host builds (i.e. not building for Android itself, so |OPENSSL_ANDROID| is
+// unset) which are still using a 2.15 sysroot.
+//
+// TODO(davidben): Remove this once Android updates their sysroot.
+#if defined(__GLIBC_PREREQ)
+#if !__GLIBC_PREREQ(2, 16)
+#undef OPENSSL_HAS_GETAUXVAL
+#endif
+#endif
+#if defined(OPENSSL_HAS_GETAUXVAL)
+#include <sys/auxv.h>
+#endif
+#endif  // OPENSSL_LINUX
+
+#if defined(OPENSSL_MACOS)
+#include <sys/random.h>
+#endif
+
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/mem.h>
+
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+#if defined(OPENSSL_LINUX)
+
+#if defined(OPENSSL_X86_64)
+#define EXPECTED_NR_getrandom 318
+#elif defined(OPENSSL_X86)
+#define EXPECTED_NR_getrandom 355
+#elif defined(OPENSSL_AARCH64)
+#define EXPECTED_NR_getrandom 278
+#elif defined(OPENSSL_ARM)
+#define EXPECTED_NR_getrandom 384
+#elif defined(OPENSSL_PPC64LE)
+#define EXPECTED_NR_getrandom 359
+#endif
+
+#if defined(EXPECTED_NR_getrandom)
+#define USE_NR_getrandom
+
+#if defined(__NR_getrandom)
+
+#if __NR_getrandom != EXPECTED_NR_getrandom
+#error "system call number for getrandom is not the expected value"
+#endif
+
+#else  // __NR_getrandom
+
+#define __NR_getrandom EXPECTED_NR_getrandom
+
+#endif  // __NR_getrandom
+
+#if defined(OPENSSL_MSAN)
+void __msan_unpoison(void *, size_t);
+#endif
+
+static ssize_t boringssl_getrandom(void *buf, size_t buf_len, unsigned flags) {
+  ssize_t ret;
+  do {
+    ret = syscall(__NR_getrandom, buf, buf_len, flags);
+  } while (ret == -1 && errno == EINTR);
+
+#if defined(OPENSSL_MSAN)
+  if (ret > 0) {
+    // MSAN doesn't recognise |syscall| and thus doesn't notice that we have
+    // initialised the output buffer.
+    __msan_unpoison(buf, ret);
+  }
+#endif  // OPENSSL_MSAN
+
+  return ret;
+}
+
+#endif  // EXPECTED_NR_getrandom
+
+#if !defined(GRND_NONBLOCK)
+#define GRND_NONBLOCK 1
+#endif
+#if !defined(GRND_RANDOM)
+#define GRND_RANDOM 2
+#endif
+
+#endif  // OPENSSL_LINUX
+
+// rand_lock is used to protect the |*_requested| variables.
+DEFINE_STATIC_MUTEX(rand_lock)
+
+// The following constants are magic values of |urandom_fd|.
+static const int kUnset = 0;
+static const int kHaveGetrandom = -3;
+
+// urandom_fd_requested is set by |RAND_set_urandom_fd|. It's protected by
+// |rand_lock|.
+DEFINE_BSS_GET(int, urandom_fd_requested)
+
+// urandom_fd is a file descriptor to /dev/urandom. It's protected by |once|.
+DEFINE_BSS_GET(int, urandom_fd)
+
+#if defined(USE_NR_getrandom)
+
+// getrandom_ready is one if |getrandom| had been initialized by the time
+// |init_once| was called and zero otherwise.
+DEFINE_BSS_GET(int, getrandom_ready)
+
+// extra_getrandom_flags_for_seed contains a value that is ORed into the flags
+// for getrandom() when reading entropy for a seed.
+DEFINE_BSS_GET(int, extra_getrandom_flags_for_seed)
+
+// On Android, check a system property to decide whether to set
+// |extra_getrandom_flags_for_seed| otherwise they will default to zero.  If
+// ro.oem_boringcrypto_hwrand is true then |extra_getrandom_flags_for_seed| will
+// be set to GRND_RANDOM, causing all random data to be drawn from the same
+// source as /dev/random.
+static void maybe_set_extra_getrandom_flags(void) {
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+  char value[PROP_VALUE_MAX + 1];
+  int length = __system_property_get("ro.boringcrypto.hwrand", value);
+  if (length < 0 || length > PROP_VALUE_MAX) {
+    return;
+  }
+
+  value[length] = 0;
+  if (strcasecmp(value, "true") == 0) {
+    *extra_getrandom_flags_for_seed_bss_get() = GRND_RANDOM;
+  }
+#endif
+}
+
+#endif  // USE_NR_getrandom
+
+DEFINE_STATIC_ONCE(rand_once)
+
+// init_once initializes the state of this module to values previously
+// requested. This is the only function that modifies |urandom_fd| and
+// |urandom_buffering|, whose values may be read safely after calling the
+// once.
+static void init_once(void) {
+  CRYPTO_STATIC_MUTEX_lock_read(rand_lock_bss_get());
+  int fd = *urandom_fd_requested_bss_get();
+  CRYPTO_STATIC_MUTEX_unlock_read(rand_lock_bss_get());
+
+#if defined(USE_NR_getrandom)
+  int have_getrandom;
+  uint8_t dummy;
+  ssize_t getrandom_ret =
+      boringssl_getrandom(&dummy, sizeof(dummy), GRND_NONBLOCK);
+  if (getrandom_ret == 1) {
+    *getrandom_ready_bss_get() = 1;
+    have_getrandom = 1;
+  } else if (getrandom_ret == -1 && errno == EAGAIN) {
+    // We have getrandom, but the entropy pool has not been initialized yet.
+    have_getrandom = 1;
+  } else if (getrandom_ret == -1 && errno == ENOSYS) {
+    // Fallthrough to using /dev/urandom, below.
+    have_getrandom = 0;
+  } else {
+    // Other errors are fatal.
+    perror("getrandom");
+    abort();
+  }
+
+  if (have_getrandom) {
+    *urandom_fd_bss_get() = kHaveGetrandom;
+    maybe_set_extra_getrandom_flags();
+    return;
+  }
+#endif  // USE_NR_getrandom
+
+#if defined(OPENSSL_MACOS)
+  // getentropy is available in macOS 10.12 and up. iOS 10 and up may also
+  // support it, but the header is missing. See https://crbug.com/boringssl/287.
+  if (__builtin_available(macos 10.12, *)) {
+    *urandom_fd_bss_get() = kHaveGetrandom;
+    return;
+  }
+#endif
+
+  // Android FIPS builds must support getrandom.
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+  perror("getrandom not found");
+  abort();
+#endif
+
+  if (fd == kUnset) {
+    do {
+      fd = open("/dev/urandom", O_RDONLY);
+    } while (fd == -1 && errno == EINTR);
+  }
+
+  if (fd < 0) {
+    perror("failed to open /dev/urandom");
+    abort();
+  }
+
+  assert(kUnset == 0);
+  if (fd == kUnset) {
+    // Because we want to keep |urandom_fd| in the BSS, we have to initialise
+    // it to zero. But zero is a valid file descriptor too. Thus if open
+    // returns zero for /dev/urandom, we dup it to get a non-zero number.
+    fd = dup(fd);
+    close(kUnset);
+
+    if (fd <= 0) {
+      perror("failed to dup /dev/urandom fd");
+      abort();
+    }
+  }
+
+  int flags = fcntl(fd, F_GETFD);
+  if (flags == -1) {
+    // Native Client doesn't implement |fcntl|.
+    if (errno != ENOSYS) {
+      perror("failed to get flags from urandom fd");
+      abort();
+    }
+  } else {
+    flags |= FD_CLOEXEC;
+    if (fcntl(fd, F_SETFD, flags) == -1) {
+      perror("failed to set FD_CLOEXEC on urandom fd");
+      abort();
+    }
+  }
+  *urandom_fd_bss_get() = fd;
+}
+
+DEFINE_STATIC_ONCE(wait_for_entropy_once)
+
+static void wait_for_entropy(void) {
+  int fd = *urandom_fd_bss_get();
+  if (fd == kHaveGetrandom) {
+    // |getrandom| and |getentropy| support blocking in |fill_with_entropy|
+    // directly. For |getrandom|, we first probe with a non-blocking call to aid
+    // debugging.
+#if defined(USE_NR_getrandom)
+    if (*getrandom_ready_bss_get()) {
+      // The entropy pool was already initialized in |init_once|.
+      return;
+    }
+
+    uint8_t dummy;
+    ssize_t getrandom_ret =
+        boringssl_getrandom(&dummy, sizeof(dummy), GRND_NONBLOCK);
+    if (getrandom_ret == -1 && errno == EAGAIN) {
+      // Attempt to get the path of the current process to aid in debugging when
+      // something blocks.
+      const char *current_process = "<unknown>";
+#if defined(OPENSSL_HAS_GETAUXVAL)
+      const unsigned long getauxval_ret = getauxval(AT_EXECFN);
+      if (getauxval_ret != 0) {
+        current_process = (const char *)getauxval_ret;
+      }
+#endif
+
+      fprintf(
+          stderr,
+          "%s: getrandom indicates that the entropy pool has not been "
+          "initialized. Rather than continue with poor entropy, this process "
+          "will block until entropy is available.\n",
+          current_process);
+
+      getrandom_ret =
+          boringssl_getrandom(&dummy, sizeof(dummy), 0 /* no flags */);
+    }
+
+    if (getrandom_ret != 1) {
+      perror("getrandom");
+      abort();
+    }
+#endif  // USE_NR_getrandom
+    return;
+  }
+
+#if defined(BORINGSSL_FIPS)
+  // In FIPS mode we ensure that the kernel has sufficient entropy before
+  // continuing. This is automatically handled by getrandom, which requires
+  // that the entropy pool has been initialised, but for urandom we have to
+  // poll.
+  for (;;) {
+    int entropy_bits;
+    if (ioctl(fd, RNDGETENTCNT, &entropy_bits)) {
+      fprintf(stderr,
+              "RNDGETENTCNT on /dev/urandom failed. We cannot continue in this "
+              "case when in FIPS mode.\n");
+      abort();
+    }
+
+    static const int kBitsNeeded = 256;
+    if (entropy_bits >= kBitsNeeded) {
+      break;
+    }
+
+    usleep(250000);
+  }
+#endif  // BORINGSSL_FIPS
+}
+
+void RAND_set_urandom_fd(int fd) {
+  fd = dup(fd);
+  if (fd < 0) {
+    perror("failed to dup supplied urandom fd");
+    abort();
+  }
+
+  assert(kUnset == 0);
+  if (fd == kUnset) {
+    // Because we want to keep |urandom_fd| in the BSS, we have to initialise
+    // it to zero. But zero is a valid file descriptor too. Thus if dup
+    // returned zero we dup it again to get a non-zero number.
+    fd = dup(fd);
+    close(kUnset);
+
+    if (fd <= 0) {
+      perror("failed to dup supplied urandom fd");
+      abort();
+    }
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_write(rand_lock_bss_get());
+  *urandom_fd_requested_bss_get() = fd;
+  CRYPTO_STATIC_MUTEX_unlock_write(rand_lock_bss_get());
+
+  CRYPTO_once(rand_once_bss_get(), init_once);
+  if (*urandom_fd_bss_get() == kHaveGetrandom) {
+    close(fd);
+  } else if (*urandom_fd_bss_get() != fd) {
+    fprintf(stderr, "RAND_set_urandom_fd called after initialisation.\n");
+    abort();
+  }
+}
+
+// fill_with_entropy writes |len| bytes of entropy into |out|. It returns one
+// on success and zero on error. If |block| is one, this function will block
+// until the entropy pool is initialized. Otherwise, this function may fail,
+// setting |errno| to |EAGAIN| if the entropy pool has not yet been initialized.
+// If |seed| is one, this function will OR in the value of
+// |*extra_getrandom_flags_for_seed()| when using |getrandom|.
+static int fill_with_entropy(uint8_t *out, size_t len, int block, int seed) {
+  if (len == 0) {
+    return 1;
+  }
+
+#if defined(USE_NR_getrandom)
+  int getrandom_flags = 0;
+  if (!block) {
+    getrandom_flags |= GRND_NONBLOCK;
+  }
+  if (seed) {
+    getrandom_flags |= *extra_getrandom_flags_for_seed_bss_get();
+  }
+#endif
+
+  CRYPTO_once(rand_once_bss_get(), init_once);
+  if (block) {
+    CRYPTO_once(wait_for_entropy_once_bss_get(), wait_for_entropy);
+  }
+
+  // Clear |errno| so it has defined value if |read| or |getrandom|
+  // "successfully" returns zero.
+  errno = 0;
+  while (len > 0) {
+    ssize_t r;
+
+    if (*urandom_fd_bss_get() == kHaveGetrandom) {
+#if defined(USE_NR_getrandom)
+      r = boringssl_getrandom(out, len, getrandom_flags);
+#elif defined(OPENSSL_MACOS)
+      if (__builtin_available(macos 10.12, *)) {
+        // |getentropy| can only request 256 bytes at a time.
+        size_t todo = len <= 256 ? len : 256;
+        if (getentropy(out, todo) != 0) {
+          r = -1;
+        } else {
+          r = (ssize_t)todo;
+        }
+      } else {
+        fprintf(stderr, "urandom fd corrupt.\n");
+        abort();
+      }
+#else  // USE_NR_getrandom
+      fprintf(stderr, "urandom fd corrupt.\n");
+      abort();
+#endif
+    } else {
+      do {
+        r = read(*urandom_fd_bss_get(), out, len);
+      } while (r == -1 && errno == EINTR);
+    }
+
+    if (r <= 0) {
+      return 0;
+    }
+    out += r;
+    len -= r;
+  }
+
+  return 1;
+}
+
+// CRYPTO_sysrand puts |requested| random bytes into |out|.
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  if (!fill_with_entropy(out, requested, /*block=*/1, /*seed=*/0)) {
+    perror("entropy fill failed");
+    abort();
+  }
+}
+
+#if defined(BORINGSSL_FIPS)
+void CRYPTO_sysrand_for_seed(uint8_t *out, size_t requested) {
+  if (!fill_with_entropy(out, requested, /*block=*/1, /*seed=*/1)) {
+    perror("entropy fill failed");
+    abort();
+  }
+
+#if defined(BORINGSSL_FIPS_BREAK_CRNG)
+  // This breaks the "continuous random number generator test" defined in FIPS
+  // 140-2, section 4.9.2, and implemented in rand_get_seed().
+  OPENSSL_memset(out, 0, requested);
+#endif
+}
+
+void CRYPTO_sysrand_if_available(uint8_t *out, size_t requested) {
+  // Return all zeros if |fill_with_entropy| fails.
+  OPENSSL_memset(out, 0, requested);
+
+  if (!fill_with_entropy(out, requested, /*block=*/0, /*seed=*/0) &&
+      errno != EAGAIN) {
+    perror("opportunistic entropy fill failed");
+    abort();
+  }
+}
+#endif  // BORINGSSL_FIPS
+
+#endif  // OPENSSL_URANDOM
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c.grpc_back
new file mode 100644
index 0000000..4a60eb2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rand/urandom.c.grpc_back	
@@ -0,0 +1,481 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#if !defined(_GNU_SOURCE)
+#define _GNU_SOURCE  // needed for syscall() on Linux.
+#endif
+
+#include <openssl/rand.h>
+
+#include "internal.h"
+
+#if defined(OPENSSL_URANDOM)
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#if defined(OPENSSL_LINUX)
+#if defined(BORINGSSL_FIPS)
+#include <linux/random.h>
+#include <sys/ioctl.h>
+#endif
+#include <sys/syscall.h>
+
+#if defined(OPENSSL_ANDROID)
+#include <sys/system_properties.h>
+#endif
+
+#if !defined(OPENSSL_ANDROID)
+#define OPENSSL_HAS_GETAUXVAL
+#endif
+// glibc prior to 2.16 does not have getauxval and sys/auxv.h. Android has some
+// host builds (i.e. not building for Android itself, so |OPENSSL_ANDROID| is
+// unset) which are still using a 2.15 sysroot.
+//
+// TODO(davidben): Remove this once Android updates their sysroot.
+#if defined(__GLIBC_PREREQ)
+#if !__GLIBC_PREREQ(2, 16)
+#undef OPENSSL_HAS_GETAUXVAL
+#endif
+#endif
+#if defined(OPENSSL_HAS_GETAUXVAL)
+#include <sys/auxv.h>
+#endif
+#endif  // OPENSSL_LINUX
+
+#if defined(OPENSSL_MACOS)
+#include <sys/random.h>
+#endif
+
+#include <openssl/thread.h>
+#include <openssl/mem.h>
+
+#include "../delocate.h"
+#include "../../internal.h"
+
+
+#if defined(OPENSSL_LINUX)
+
+#if defined(OPENSSL_X86_64)
+#define EXPECTED_NR_getrandom 318
+#elif defined(OPENSSL_X86)
+#define EXPECTED_NR_getrandom 355
+#elif defined(OPENSSL_AARCH64)
+#define EXPECTED_NR_getrandom 278
+#elif defined(OPENSSL_ARM)
+#define EXPECTED_NR_getrandom 384
+#elif defined(OPENSSL_PPC64LE)
+#define EXPECTED_NR_getrandom 359
+#endif
+
+#if defined(EXPECTED_NR_getrandom)
+#define USE_NR_getrandom
+
+#if defined(__NR_getrandom)
+
+#if __NR_getrandom != EXPECTED_NR_getrandom
+#error "system call number for getrandom is not the expected value"
+#endif
+
+#else  // __NR_getrandom
+
+#define __NR_getrandom EXPECTED_NR_getrandom
+
+#endif  // __NR_getrandom
+
+#if defined(OPENSSL_MSAN)
+void __msan_unpoison(void *, size_t);
+#endif
+
+static ssize_t boringssl_getrandom(void *buf, size_t buf_len, unsigned flags) {
+  ssize_t ret;
+  do {
+    ret = syscall(__NR_getrandom, buf, buf_len, flags);
+  } while (ret == -1 && errno == EINTR);
+
+#if defined(OPENSSL_MSAN)
+  if (ret > 0) {
+    // MSAN doesn't recognise |syscall| and thus doesn't notice that we have
+    // initialised the output buffer.
+    __msan_unpoison(buf, ret);
+  }
+#endif  // OPENSSL_MSAN
+
+  return ret;
+}
+
+#endif  // EXPECTED_NR_getrandom
+
+#if !defined(GRND_NONBLOCK)
+#define GRND_NONBLOCK 1
+#endif
+#if !defined(GRND_RANDOM)
+#define GRND_RANDOM 2
+#endif
+
+#endif  // OPENSSL_LINUX
+
+// rand_lock is used to protect the |*_requested| variables.
+DEFINE_STATIC_MUTEX(rand_lock)
+
+// The following constants are magic values of |urandom_fd|.
+static const int kUnset = 0;
+static const int kHaveGetrandom = -3;
+
+// urandom_fd_requested is set by |RAND_set_urandom_fd|. It's protected by
+// |rand_lock|.
+DEFINE_BSS_GET(int, urandom_fd_requested)
+
+// urandom_fd is a file descriptor to /dev/urandom. It's protected by |once|.
+DEFINE_BSS_GET(int, urandom_fd)
+
+#if defined(USE_NR_getrandom)
+
+// getrandom_ready is one if |getrandom| had been initialized by the time
+// |init_once| was called and zero otherwise.
+DEFINE_BSS_GET(int, getrandom_ready)
+
+// extra_getrandom_flags_for_seed contains a value that is ORed into the flags
+// for getrandom() when reading entropy for a seed.
+DEFINE_BSS_GET(int, extra_getrandom_flags_for_seed)
+
+// On Android, check a system property to decide whether to set
+// |extra_getrandom_flags_for_seed| otherwise they will default to zero.  If
+// ro.oem_boringcrypto_hwrand is true then |extra_getrandom_flags_for_seed| will
+// be set to GRND_RANDOM, causing all random data to be drawn from the same
+// source as /dev/random.
+static void maybe_set_extra_getrandom_flags(void) {
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+  char value[PROP_VALUE_MAX + 1];
+  int length = __system_property_get("ro.boringcrypto.hwrand", value);
+  if (length < 0 || length > PROP_VALUE_MAX) {
+    return;
+  }
+
+  value[length] = 0;
+  if (strcasecmp(value, "true") == 0) {
+    *extra_getrandom_flags_for_seed_bss_get() = GRND_RANDOM;
+  }
+#endif
+}
+
+#endif  // USE_NR_getrandom
+
+DEFINE_STATIC_ONCE(rand_once)
+
+// init_once initializes the state of this module to values previously
+// requested. This is the only function that modifies |urandom_fd| and
+// |urandom_buffering|, whose values may be read safely after calling the
+// once.
+static void init_once(void) {
+  CRYPTO_STATIC_MUTEX_lock_read(rand_lock_bss_get());
+  int fd = *urandom_fd_requested_bss_get();
+  CRYPTO_STATIC_MUTEX_unlock_read(rand_lock_bss_get());
+
+#if defined(USE_NR_getrandom)
+  int have_getrandom;
+  uint8_t dummy;
+  ssize_t getrandom_ret =
+      boringssl_getrandom(&dummy, sizeof(dummy), GRND_NONBLOCK);
+  if (getrandom_ret == 1) {
+    *getrandom_ready_bss_get() = 1;
+    have_getrandom = 1;
+  } else if (getrandom_ret == -1 && errno == EAGAIN) {
+    // We have getrandom, but the entropy pool has not been initialized yet.
+    have_getrandom = 1;
+  } else if (getrandom_ret == -1 && errno == ENOSYS) {
+    // Fallthrough to using /dev/urandom, below.
+    have_getrandom = 0;
+  } else {
+    // Other errors are fatal.
+    perror("getrandom");
+    abort();
+  }
+
+  if (have_getrandom) {
+    *urandom_fd_bss_get() = kHaveGetrandom;
+    maybe_set_extra_getrandom_flags();
+    return;
+  }
+#endif  // USE_NR_getrandom
+
+#if defined(OPENSSL_MACOS)
+  // getentropy is available in macOS 10.12 and up. iOS 10 and up may also
+  // support it, but the header is missing. See https://crbug.com/boringssl/287.
+  if (__builtin_available(macos 10.12, *)) {
+    *urandom_fd_bss_get() = kHaveGetrandom;
+    return;
+  }
+#endif
+
+  // Android FIPS builds must support getrandom.
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+  perror("getrandom not found");
+  abort();
+#endif
+
+  if (fd == kUnset) {
+    do {
+      fd = open("/dev/urandom", O_RDONLY);
+    } while (fd == -1 && errno == EINTR);
+  }
+
+  if (fd < 0) {
+    perror("failed to open /dev/urandom");
+    abort();
+  }
+
+  assert(kUnset == 0);
+  if (fd == kUnset) {
+    // Because we want to keep |urandom_fd| in the BSS, we have to initialise
+    // it to zero. But zero is a valid file descriptor too. Thus if open
+    // returns zero for /dev/urandom, we dup it to get a non-zero number.
+    fd = dup(fd);
+    close(kUnset);
+
+    if (fd <= 0) {
+      perror("failed to dup /dev/urandom fd");
+      abort();
+    }
+  }
+
+  int flags = fcntl(fd, F_GETFD);
+  if (flags == -1) {
+    // Native Client doesn't implement |fcntl|.
+    if (errno != ENOSYS) {
+      perror("failed to get flags from urandom fd");
+      abort();
+    }
+  } else {
+    flags |= FD_CLOEXEC;
+    if (fcntl(fd, F_SETFD, flags) == -1) {
+      perror("failed to set FD_CLOEXEC on urandom fd");
+      abort();
+    }
+  }
+  *urandom_fd_bss_get() = fd;
+}
+
+DEFINE_STATIC_ONCE(wait_for_entropy_once)
+
+static void wait_for_entropy(void) {
+  int fd = *urandom_fd_bss_get();
+  if (fd == kHaveGetrandom) {
+    // |getrandom| and |getentropy| support blocking in |fill_with_entropy|
+    // directly. For |getrandom|, we first probe with a non-blocking call to aid
+    // debugging.
+#if defined(USE_NR_getrandom)
+    if (*getrandom_ready_bss_get()) {
+      // The entropy pool was already initialized in |init_once|.
+      return;
+    }
+
+    uint8_t dummy;
+    ssize_t getrandom_ret =
+        boringssl_getrandom(&dummy, sizeof(dummy), GRND_NONBLOCK);
+    if (getrandom_ret == -1 && errno == EAGAIN) {
+      // Attempt to get the path of the current process to aid in debugging when
+      // something blocks.
+      const char *current_process = "<unknown>";
+#if defined(OPENSSL_HAS_GETAUXVAL)
+      const unsigned long getauxval_ret = getauxval(AT_EXECFN);
+      if (getauxval_ret != 0) {
+        current_process = (const char *)getauxval_ret;
+      }
+#endif
+
+      fprintf(
+          stderr,
+          "%s: getrandom indicates that the entropy pool has not been "
+          "initialized. Rather than continue with poor entropy, this process "
+          "will block until entropy is available.\n",
+          current_process);
+
+      getrandom_ret =
+          boringssl_getrandom(&dummy, sizeof(dummy), 0 /* no flags */);
+    }
+
+    if (getrandom_ret != 1) {
+      perror("getrandom");
+      abort();
+    }
+#endif  // USE_NR_getrandom
+    return;
+  }
+
+#if defined(BORINGSSL_FIPS)
+  // In FIPS mode we ensure that the kernel has sufficient entropy before
+  // continuing. This is automatically handled by getrandom, which requires
+  // that the entropy pool has been initialised, but for urandom we have to
+  // poll.
+  for (;;) {
+    int entropy_bits;
+    if (ioctl(fd, RNDGETENTCNT, &entropy_bits)) {
+      fprintf(stderr,
+              "RNDGETENTCNT on /dev/urandom failed. We cannot continue in this "
+              "case when in FIPS mode.\n");
+      abort();
+    }
+
+    static const int kBitsNeeded = 256;
+    if (entropy_bits >= kBitsNeeded) {
+      break;
+    }
+
+    usleep(250000);
+  }
+#endif  // BORINGSSL_FIPS
+}
+
+void RAND_set_urandom_fd(int fd) {
+  fd = dup(fd);
+  if (fd < 0) {
+    perror("failed to dup supplied urandom fd");
+    abort();
+  }
+
+  assert(kUnset == 0);
+  if (fd == kUnset) {
+    // Because we want to keep |urandom_fd| in the BSS, we have to initialise
+    // it to zero. But zero is a valid file descriptor too. Thus if dup
+    // returned zero we dup it again to get a non-zero number.
+    fd = dup(fd);
+    close(kUnset);
+
+    if (fd <= 0) {
+      perror("failed to dup supplied urandom fd");
+      abort();
+    }
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_write(rand_lock_bss_get());
+  *urandom_fd_requested_bss_get() = fd;
+  CRYPTO_STATIC_MUTEX_unlock_write(rand_lock_bss_get());
+
+  CRYPTO_once(rand_once_bss_get(), init_once);
+  if (*urandom_fd_bss_get() == kHaveGetrandom) {
+    close(fd);
+  } else if (*urandom_fd_bss_get() != fd) {
+    fprintf(stderr, "RAND_set_urandom_fd called after initialisation.\n");
+    abort();
+  }
+}
+
+// fill_with_entropy writes |len| bytes of entropy into |out|. It returns one
+// on success and zero on error. If |block| is one, this function will block
+// until the entropy pool is initialized. Otherwise, this function may fail,
+// setting |errno| to |EAGAIN| if the entropy pool has not yet been initialized.
+// If |seed| is one, this function will OR in the value of
+// |*extra_getrandom_flags_for_seed()| when using |getrandom|.
+static int fill_with_entropy(uint8_t *out, size_t len, int block, int seed) {
+  if (len == 0) {
+    return 1;
+  }
+
+#if defined(USE_NR_getrandom)
+  int getrandom_flags = 0;
+  if (!block) {
+    getrandom_flags |= GRND_NONBLOCK;
+  }
+  if (seed) {
+    getrandom_flags |= *extra_getrandom_flags_for_seed_bss_get();
+  }
+#endif
+
+  CRYPTO_once(rand_once_bss_get(), init_once);
+  if (block) {
+    CRYPTO_once(wait_for_entropy_once_bss_get(), wait_for_entropy);
+  }
+
+  // Clear |errno| so it has defined value if |read| or |getrandom|
+  // "successfully" returns zero.
+  errno = 0;
+  while (len > 0) {
+    ssize_t r;
+
+    if (*urandom_fd_bss_get() == kHaveGetrandom) {
+#if defined(USE_NR_getrandom)
+      r = boringssl_getrandom(out, len, getrandom_flags);
+#elif defined(OPENSSL_MACOS)
+      if (__builtin_available(macos 10.12, *)) {
+        // |getentropy| can only request 256 bytes at a time.
+        size_t todo = len <= 256 ? len : 256;
+        if (getentropy(out, todo) != 0) {
+          r = -1;
+        } else {
+          r = (ssize_t)todo;
+        }
+      } else {
+        fprintf(stderr, "urandom fd corrupt.\n");
+        abort();
+      }
+#else  // USE_NR_getrandom
+      fprintf(stderr, "urandom fd corrupt.\n");
+      abort();
+#endif
+    } else {
+      do {
+        r = read(*urandom_fd_bss_get(), out, len);
+      } while (r == -1 && errno == EINTR);
+    }
+
+    if (r <= 0) {
+      return 0;
+    }
+    out += r;
+    len -= r;
+  }
+
+  return 1;
+}
+
+// CRYPTO_sysrand puts |requested| random bytes into |out|.
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  if (!fill_with_entropy(out, requested, /*block=*/1, /*seed=*/0)) {
+    perror("entropy fill failed");
+    abort();
+  }
+}
+
+#if defined(BORINGSSL_FIPS)
+void CRYPTO_sysrand_for_seed(uint8_t *out, size_t requested) {
+  if (!fill_with_entropy(out, requested, /*block=*/1, /*seed=*/1)) {
+    perror("entropy fill failed");
+    abort();
+  }
+
+#if defined(BORINGSSL_FIPS_BREAK_CRNG)
+  // This breaks the "continuous random number generator test" defined in FIPS
+  // 140-2, section 4.9.2, and implemented in rand_get_seed().
+  OPENSSL_memset(out, 0, requested);
+#endif
+}
+
+void CRYPTO_sysrand_if_available(uint8_t *out, size_t requested) {
+  // Return all zeros if |fill_with_entropy| fails.
+  OPENSSL_memset(out, 0, requested);
+
+  if (!fill_with_entropy(out, requested, /*block=*/0, /*seed=*/0) &&
+      errno != EAGAIN) {
+    perror("opportunistic entropy fill failed");
+    abort();
+  }
+}
+#endif  // BORINGSSL_FIPS
+
+#endif  // OPENSSL_URANDOM
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c
new file mode 100644
index 0000000..652cae6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c	
@@ -0,0 +1,239 @@
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/rsa.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define BN_BLINDING_COUNTER 32
+
+struct bn_blinding_st {
+  BIGNUM *A;  // The base blinding factor, Montgomery-encoded.
+  BIGNUM *Ai;  // The inverse of the blinding factor, Montgomery-encoded.
+  unsigned counter;
+};
+
+static int bn_blinding_create_param(BN_BLINDING *b, const BIGNUM *e,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+BN_BLINDING *BN_BLINDING_new(void) {
+  BN_BLINDING *ret = OPENSSL_malloc(sizeof(BN_BLINDING));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(BN_BLINDING));
+
+  ret->A = BN_new();
+  if (ret->A == NULL) {
+    goto err;
+  }
+
+  ret->Ai = BN_new();
+  if (ret->Ai == NULL) {
+    goto err;
+  }
+
+  // The blinding values need to be created before this blinding can be used.
+  ret->counter = BN_BLINDING_COUNTER - 1;
+
+  return ret;
+
+err:
+  BN_BLINDING_free(ret);
+  return NULL;
+}
+
+void BN_BLINDING_free(BN_BLINDING *r) {
+  if (r == NULL) {
+    return;
+  }
+
+  BN_free(r->A);
+  BN_free(r->Ai);
+  OPENSSL_free(r);
+}
+
+static int bn_blinding_update(BN_BLINDING *b, const BIGNUM *e,
+                              const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  if (++b->counter == BN_BLINDING_COUNTER) {
+    // re-create blinding parameters
+    if (!bn_blinding_create_param(b, e, mont, ctx)) {
+      goto err;
+    }
+    b->counter = 0;
+  } else {
+    if (!BN_mod_mul_montgomery(b->A, b->A, b->A, mont, ctx) ||
+        !BN_mod_mul_montgomery(b->Ai, b->Ai, b->Ai, mont, ctx)) {
+      goto err;
+    }
+  }
+
+  return 1;
+
+err:
+  // |A| and |Ai| may be in an inconsistent state so they both need to be
+  // replaced the next time this blinding is used. Note that this is only
+  // sufficient because support for |BN_BLINDING_NO_UPDATE| and
+  // |BN_BLINDING_NO_RECREATE| was previously dropped.
+  b->counter = BN_BLINDING_COUNTER - 1;
+
+  return 0;
+}
+
+int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, const BIGNUM *e,
+                        const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // |n| is not Montgomery-encoded and |b->A| is. |BN_mod_mul_montgomery|
+  // cancels one Montgomery factor, so the resulting value of |n| is unencoded.
+  if (!bn_blinding_update(b, e, mont, ctx) ||
+      !BN_mod_mul_montgomery(n, n, b->A, mont, ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_MONT_CTX *mont,
+                       BN_CTX *ctx) {
+  // |n| is not Montgomery-encoded and |b->A| is. |BN_mod_mul_montgomery|
+  // cancels one Montgomery factor, so the resulting value of |n| is unencoded.
+  return BN_mod_mul_montgomery(n, n, b->Ai, mont, ctx);
+}
+
+static int bn_blinding_create_param(BN_BLINDING *b, const BIGNUM *e,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  int no_inverse;
+  if (!BN_rand_range_ex(b->A, 1, &mont->N) ||
+      // Compute |b->A|^-1 in Montgomery form. Note |BN_from_montgomery| +
+      // |BN_mod_inverse_blinded| is equivalent to, but more efficient than,
+      // |BN_mod_inverse_blinded| + |BN_to_montgomery|.
+      //
+      // We do not retry if |b->A| has no inverse. Finding a non-invertible
+      // value of |b->A| is equivalent to factoring |mont->N|. There is
+      // negligible probability of stumbling on one at random.
+      !BN_from_montgomery(b->Ai, b->A, mont, ctx) ||
+      !BN_mod_inverse_blinded(b->Ai, &no_inverse, b->Ai, mont, ctx) ||
+      // TODO(davidben): |BN_mod_exp_mont| internally computes the result in
+      // Montgomery form. Save a pair of Montgomery reductions and a
+      // multiplication by returning that value directly.
+      !BN_mod_exp_mont(b->A, b->A, e, &mont->N, ctx, mont) ||
+      !BN_to_montgomery(b->A, b->A, mont, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c.grpc_back
new file mode 100644
index 0000000..b05f9c9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/blinding.c.grpc_back	
@@ -0,0 +1,239 @@
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/rsa.h>
+
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/mem.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define BN_BLINDING_COUNTER 32
+
+struct bn_blinding_st {
+  BIGNUM *A;  // The base blinding factor, Montgomery-encoded.
+  BIGNUM *Ai;  // The inverse of the blinding factor, Montgomery-encoded.
+  unsigned counter;
+};
+
+static int bn_blinding_create_param(BN_BLINDING *b, const BIGNUM *e,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+BN_BLINDING *BN_BLINDING_new(void) {
+  BN_BLINDING *ret = OPENSSL_malloc(sizeof(BN_BLINDING));
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(BN_BLINDING));
+
+  ret->A = BN_new();
+  if (ret->A == NULL) {
+    goto err;
+  }
+
+  ret->Ai = BN_new();
+  if (ret->Ai == NULL) {
+    goto err;
+  }
+
+  // The blinding values need to be created before this blinding can be used.
+  ret->counter = BN_BLINDING_COUNTER - 1;
+
+  return ret;
+
+err:
+  BN_BLINDING_free(ret);
+  return NULL;
+}
+
+void BN_BLINDING_free(BN_BLINDING *r) {
+  if (r == NULL) {
+    return;
+  }
+
+  BN_free(r->A);
+  BN_free(r->Ai);
+  OPENSSL_free(r);
+}
+
+static int bn_blinding_update(BN_BLINDING *b, const BIGNUM *e,
+                              const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  if (++b->counter == BN_BLINDING_COUNTER) {
+    // re-create blinding parameters
+    if (!bn_blinding_create_param(b, e, mont, ctx)) {
+      goto err;
+    }
+    b->counter = 0;
+  } else {
+    if (!BN_mod_mul_montgomery(b->A, b->A, b->A, mont, ctx) ||
+        !BN_mod_mul_montgomery(b->Ai, b->Ai, b->Ai, mont, ctx)) {
+      goto err;
+    }
+  }
+
+  return 1;
+
+err:
+  // |A| and |Ai| may be in an inconsistent state so they both need to be
+  // replaced the next time this blinding is used. Note that this is only
+  // sufficient because support for |BN_BLINDING_NO_UPDATE| and
+  // |BN_BLINDING_NO_RECREATE| was previously dropped.
+  b->counter = BN_BLINDING_COUNTER - 1;
+
+  return 0;
+}
+
+int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, const BIGNUM *e,
+                        const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  // |n| is not Montgomery-encoded and |b->A| is. |BN_mod_mul_montgomery|
+  // cancels one Montgomery factor, so the resulting value of |n| is unencoded.
+  if (!bn_blinding_update(b, e, mont, ctx) ||
+      !BN_mod_mul_montgomery(n, n, b->A, mont, ctx)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_MONT_CTX *mont,
+                       BN_CTX *ctx) {
+  // |n| is not Montgomery-encoded and |b->A| is. |BN_mod_mul_montgomery|
+  // cancels one Montgomery factor, so the resulting value of |n| is unencoded.
+  return BN_mod_mul_montgomery(n, n, b->Ai, mont, ctx);
+}
+
+static int bn_blinding_create_param(BN_BLINDING *b, const BIGNUM *e,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx) {
+  int no_inverse;
+  if (!BN_rand_range_ex(b->A, 1, &mont->N) ||
+      // Compute |b->A|^-1 in Montgomery form. Note |BN_from_montgomery| +
+      // |BN_mod_inverse_blinded| is equivalent to, but more efficient than,
+      // |BN_mod_inverse_blinded| + |BN_to_montgomery|.
+      //
+      // We do not retry if |b->A| has no inverse. Finding a non-invertible
+      // value of |b->A| is equivalent to factoring |mont->N|. There is
+      // negligible probability of stumbling on one at random.
+      !BN_from_montgomery(b->Ai, b->A, mont, ctx) ||
+      !BN_mod_inverse_blinded(b->Ai, &no_inverse, b->Ai, mont, ctx) ||
+      // TODO(davidben): |BN_mod_exp_mont| internally computes the result in
+      // Montgomery form. Save a pair of Montgomery reductions and a
+      // multiplication by returning that value directly.
+      !BN_mod_exp_mont(b->A, b->A, e, &mont->N, ctx, mont) ||
+      !BN_to_montgomery(b->A, b->A, mont, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h
new file mode 100644
index 0000000..91ab372
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h	
@@ -0,0 +1,126 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RSA_INTERNAL_H
+#define OPENSSL_HEADER_RSA_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bn.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Default implementations of RSA operations.
+
+const RSA_METHOD *RSA_default_method(void);
+
+size_t rsa_default_size(const RSA *rsa);
+int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                         size_t max_out, const uint8_t *in, size_t in_len,
+                         int padding);
+int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                        const uint8_t *in, size_t in_len, int padding);
+int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                                  size_t len);
+
+
+BN_BLINDING *BN_BLINDING_new(void);
+void BN_BLINDING_free(BN_BLINDING *b);
+int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, const BIGNUM *e,
+                        const BN_MONT_CTX *mont_ctx, BN_CTX *ctx);
+int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_MONT_CTX *mont_ctx,
+                       BN_CTX *ctx);
+
+
+int RSA_padding_add_PKCS1_type_1(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len);
+int RSA_padding_check_PKCS1_type_1(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len);
+int RSA_padding_add_PKCS1_type_2(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len);
+int RSA_padding_check_PKCS1_type_2(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len);
+int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *out, size_t *out_len,
+                                      size_t max_out, const uint8_t *from,
+                                      size_t from_len, const uint8_t *param,
+                                      size_t param_len, const EVP_MD *md,
+                                      const EVP_MD *mgf1md);
+int RSA_padding_add_none(uint8_t *to, size_t to_len, const uint8_t *from,
+                         size_t from_len);
+
+// RSA_private_transform calls either the method-specific |private_transform|
+// function (if given) or the generic one. See the comment for
+// |private_transform| in |rsa_meth_st|.
+int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                          size_t len);
+
+
+// This constant is exported for test purposes.
+extern const BN_ULONG kBoringSSLRSASqrtTwo[];
+extern const size_t kBoringSSLRSASqrtTwoLen;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RSA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h.grpc_back
new file mode 100644
index 0000000..f913058
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/internal.h.grpc_back	
@@ -0,0 +1,126 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RSA_INTERNAL_H
+#define OPENSSL_HEADER_RSA_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <openssl/bn.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Default implementations of RSA operations.
+
+const RSA_METHOD *RSA_default_method(void);
+
+size_t rsa_default_size(const RSA *rsa);
+int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                         size_t max_out, const uint8_t *in, size_t in_len,
+                         int padding);
+int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                        const uint8_t *in, size_t in_len, int padding);
+int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                                  size_t len);
+
+
+BN_BLINDING *BN_BLINDING_new(void);
+void BN_BLINDING_free(BN_BLINDING *b);
+int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *b, const BIGNUM *e,
+                        const BN_MONT_CTX *mont_ctx, BN_CTX *ctx);
+int BN_BLINDING_invert(BIGNUM *n, const BN_BLINDING *b, BN_MONT_CTX *mont_ctx,
+                       BN_CTX *ctx);
+
+
+int RSA_padding_add_PKCS1_type_1(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len);
+int RSA_padding_check_PKCS1_type_1(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len);
+int RSA_padding_add_PKCS1_type_2(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len);
+int RSA_padding_check_PKCS1_type_2(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len);
+int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *out, size_t *out_len,
+                                      size_t max_out, const uint8_t *from,
+                                      size_t from_len, const uint8_t *param,
+                                      size_t param_len, const EVP_MD *md,
+                                      const EVP_MD *mgf1md);
+int RSA_padding_add_none(uint8_t *to, size_t to_len, const uint8_t *from,
+                         size_t from_len);
+
+// RSA_private_transform calls either the method-specific |private_transform|
+// function (if given) or the generic one. See the comment for
+// |private_transform| in |rsa_meth_st|.
+int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                          size_t len);
+
+
+// This constant is exported for test purposes.
+extern const BN_ULONG kBoringSSLRSASqrtTwo[];
+extern const size_t kBoringSSLRSASqrtTwoLen;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RSA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c
new file mode 100644
index 0000000..0696238
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c	
@@ -0,0 +1,695 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define RSA_PKCS1_PADDING_SIZE 11
+
+int RSA_padding_add_PKCS1_type_1(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len) {
+  // See RFC 8017, section 9.2.
+  if (to_len < RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  if (from_len > to_len - RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
+    return 0;
+  }
+
+  to[0] = 0;
+  to[1] = 1;
+  OPENSSL_memset(to + 2, 0xff, to_len - 3 - from_len);
+  to[to_len - from_len - 1] = 0;
+  OPENSSL_memcpy(to + to_len - from_len, from, from_len);
+  return 1;
+}
+
+int RSA_padding_check_PKCS1_type_1(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len) {
+  // See RFC 8017, section 9.2. This is part of signature verification and thus
+  // does not need to run in constant-time.
+  if (from_len < 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_SMALL);
+    return 0;
+  }
+
+  // Check the header.
+  if (from[0] != 0 || from[1] != 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BLOCK_TYPE_IS_NOT_01);
+    return 0;
+  }
+
+  // Scan over padded data, looking for the 00.
+  size_t pad;
+  for (pad = 2 /* header */; pad < from_len; pad++) {
+    if (from[pad] == 0x00) {
+      break;
+    }
+
+    if (from[pad] != 0xff) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_FIXED_HEADER_DECRYPT);
+      return 0;
+    }
+  }
+
+  if (pad == from_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_NULL_BEFORE_BLOCK_MISSING);
+    return 0;
+  }
+
+  if (pad < 2 /* header */ + 8) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_PAD_BYTE_COUNT);
+    return 0;
+  }
+
+  // Skip over the 00.
+  pad++;
+
+  if (from_len - pad > max_out) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, from + pad, from_len - pad);
+  *out_len = from_len - pad;
+  return 1;
+}
+
+static int rand_nonzero(uint8_t *out, size_t len) {
+  if (!RAND_bytes(out, len)) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < len; i++) {
+    while (out[i] == 0) {
+      if (!RAND_bytes(out + i, 1)) {
+        return 0;
+      }
+    }
+  }
+
+  return 1;
+}
+
+int RSA_padding_add_PKCS1_type_2(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len) {
+  // See RFC 8017, section 7.2.1.
+  if (to_len < RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  if (from_len > to_len - RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  to[0] = 0;
+  to[1] = 2;
+
+  size_t padding_len = to_len - 3 - from_len;
+  if (!rand_nonzero(to + 2, padding_len)) {
+    return 0;
+  }
+
+  to[2 + padding_len] = 0;
+  OPENSSL_memcpy(to + to_len - from_len, from, from_len);
+  return 1;
+}
+
+int RSA_padding_check_PKCS1_type_2(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len) {
+  if (from_len == 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_EMPTY_PUBLIC_KEY);
+    return 0;
+  }
+
+  // PKCS#1 v1.5 decryption. See "PKCS #1 v2.2: RSA Cryptography
+  // Standard", section 7.2.2.
+  if (from_len < RSA_PKCS1_PADDING_SIZE) {
+    // |from| is zero-padded to the size of the RSA modulus, a public value, so
+    // this can be rejected in non-constant time.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  crypto_word_t first_byte_is_zero = constant_time_eq_w(from[0], 0);
+  crypto_word_t second_byte_is_two = constant_time_eq_w(from[1], 2);
+
+  crypto_word_t zero_index = 0, looking_for_index = CONSTTIME_TRUE_W;
+  for (size_t i = 2; i < from_len; i++) {
+    crypto_word_t equals0 = constant_time_is_zero_w(from[i]);
+    zero_index =
+        constant_time_select_w(looking_for_index & equals0, i, zero_index);
+    looking_for_index = constant_time_select_w(equals0, 0, looking_for_index);
+  }
+
+  // The input must begin with 00 02.
+  crypto_word_t valid_index = first_byte_is_zero;
+  valid_index &= second_byte_is_two;
+
+  // We must have found the end of PS.
+  valid_index &= ~looking_for_index;
+
+  // PS must be at least 8 bytes long, and it starts two bytes into |from|.
+  valid_index &= constant_time_ge_w(zero_index, 2 + 8);
+
+  // Skip the zero byte.
+  zero_index++;
+
+  // NOTE: Although this logic attempts to be constant time, the API contracts
+  // of this function and |RSA_decrypt| with |RSA_PKCS1_PADDING| make it
+  // impossible to completely avoid Bleichenbacher's attack. Consumers should
+  // use |RSA_PADDING_NONE| and perform the padding check in constant-time
+  // combined with a swap to a random session key or other mitigation.
+  CONSTTIME_DECLASSIFY(&valid_index, sizeof(valid_index));
+  CONSTTIME_DECLASSIFY(&zero_index, sizeof(zero_index));
+
+  if (!valid_index) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PKCS_DECODING_ERROR);
+    return 0;
+  }
+
+  const size_t msg_len = from_len - zero_index;
+  if (msg_len > max_out) {
+    // This shouldn't happen because this function is always called with
+    // |max_out| as the key size and |from_len| is bounded by the key size.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PKCS_DECODING_ERROR);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, &from[zero_index], msg_len);
+  *out_len = msg_len;
+  return 1;
+}
+
+int RSA_padding_add_none(uint8_t *to, size_t to_len, const uint8_t *from,
+                         size_t from_len) {
+  if (from_len > to_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  if (from_len < to_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(to, from, from_len);
+  return 1;
+}
+
+static int PKCS1_MGF1(uint8_t *out, size_t len, const uint8_t *seed,
+                      size_t seed_len, const EVP_MD *md) {
+  int ret = 0;
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+
+  size_t md_len = EVP_MD_size(md);
+
+  for (uint32_t i = 0; len > 0; i++) {
+    uint8_t counter[4];
+    counter[0] = (uint8_t)(i >> 24);
+    counter[1] = (uint8_t)(i >> 16);
+    counter[2] = (uint8_t)(i >> 8);
+    counter[3] = (uint8_t)i;
+    if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+        !EVP_DigestUpdate(&ctx, seed, seed_len) ||
+        !EVP_DigestUpdate(&ctx, counter, sizeof(counter))) {
+      goto err;
+    }
+
+    if (md_len <= len) {
+      if (!EVP_DigestFinal_ex(&ctx, out, NULL)) {
+        goto err;
+      }
+      out += md_len;
+      len -= md_len;
+    } else {
+      uint8_t digest[EVP_MAX_MD_SIZE];
+      if (!EVP_DigestFinal_ex(&ctx, digest, NULL)) {
+        goto err;
+      }
+      OPENSSL_memcpy(out, digest, len);
+      len = 0;
+    }
+  }
+
+  ret = 1;
+
+err:
+  EVP_MD_CTX_cleanup(&ctx);
+  return ret;
+}
+
+int RSA_padding_add_PKCS1_OAEP_mgf1(uint8_t *to, size_t to_len,
+                                    const uint8_t *from, size_t from_len,
+                                    const uint8_t *param, size_t param_len,
+                                    const EVP_MD *md, const EVP_MD *mgf1md) {
+  if (md == NULL) {
+    md = EVP_sha1();
+  }
+  if (mgf1md == NULL) {
+    mgf1md = md;
+  }
+
+  size_t mdlen = EVP_MD_size(md);
+
+  if (to_len < 2 * mdlen + 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  size_t emlen = to_len - 1;
+  if (from_len > emlen - 2 * mdlen - 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  if (emlen < 2 * mdlen + 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  to[0] = 0;
+  uint8_t *seed = to + 1;
+  uint8_t *db = to + mdlen + 1;
+
+  if (!EVP_Digest(param, param_len, db, NULL, md, NULL)) {
+    return 0;
+  }
+  OPENSSL_memset(db + mdlen, 0, emlen - from_len - 2 * mdlen - 1);
+  db[emlen - from_len - mdlen - 1] = 0x01;
+  OPENSSL_memcpy(db + emlen - from_len - mdlen, from, from_len);
+  if (!RAND_bytes(seed, mdlen)) {
+    return 0;
+  }
+
+  uint8_t *dbmask = OPENSSL_malloc(emlen - mdlen);
+  if (dbmask == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  if (!PKCS1_MGF1(dbmask, emlen - mdlen, seed, mdlen, mgf1md)) {
+    goto out;
+  }
+  for (size_t i = 0; i < emlen - mdlen; i++) {
+    db[i] ^= dbmask[i];
+  }
+
+  uint8_t seedmask[EVP_MAX_MD_SIZE];
+  if (!PKCS1_MGF1(seedmask, mdlen, db, emlen - mdlen, mgf1md)) {
+    goto out;
+  }
+  for (size_t i = 0; i < mdlen; i++) {
+    seed[i] ^= seedmask[i];
+  }
+  ret = 1;
+
+out:
+  OPENSSL_free(dbmask);
+  return ret;
+}
+
+int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *out, size_t *out_len,
+                                      size_t max_out, const uint8_t *from,
+                                      size_t from_len, const uint8_t *param,
+                                      size_t param_len, const EVP_MD *md,
+                                      const EVP_MD *mgf1md) {
+  uint8_t *db = NULL;
+
+  if (md == NULL) {
+    md = EVP_sha1();
+  }
+  if (mgf1md == NULL) {
+    mgf1md = md;
+  }
+
+  size_t mdlen = EVP_MD_size(md);
+
+  // The encoded message is one byte smaller than the modulus to ensure that it
+  // doesn't end up greater than the modulus. Thus there's an extra "+1" here
+  // compared to https://tools.ietf.org/html/rfc2437#section-9.1.1.2.
+  if (from_len < 1 + 2*mdlen + 1) {
+    // 'from_len' is the length of the modulus, i.e. does not depend on the
+    // particular ciphertext.
+    goto decoding_err;
+  }
+
+  size_t dblen = from_len - mdlen - 1;
+  db = OPENSSL_malloc(dblen);
+  if (db == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  const uint8_t *maskedseed = from + 1;
+  const uint8_t *maskeddb = from + 1 + mdlen;
+
+  uint8_t seed[EVP_MAX_MD_SIZE];
+  if (!PKCS1_MGF1(seed, mdlen, maskeddb, dblen, mgf1md)) {
+    goto err;
+  }
+  for (size_t i = 0; i < mdlen; i++) {
+    seed[i] ^= maskedseed[i];
+  }
+
+  if (!PKCS1_MGF1(db, dblen, seed, mdlen, mgf1md)) {
+    goto err;
+  }
+  for (size_t i = 0; i < dblen; i++) {
+    db[i] ^= maskeddb[i];
+  }
+
+  uint8_t phash[EVP_MAX_MD_SIZE];
+  if (!EVP_Digest(param, param_len, phash, NULL, md, NULL)) {
+    goto err;
+  }
+
+  crypto_word_t bad = ~constant_time_is_zero_w(CRYPTO_memcmp(db, phash, mdlen));
+  bad |= ~constant_time_is_zero_w(from[0]);
+
+  crypto_word_t looking_for_one_byte = CONSTTIME_TRUE_W;
+  size_t one_index = 0;
+  for (size_t i = mdlen; i < dblen; i++) {
+    crypto_word_t equals1 = constant_time_eq_w(db[i], 1);
+    crypto_word_t equals0 = constant_time_eq_w(db[i], 0);
+    one_index =
+        constant_time_select_w(looking_for_one_byte & equals1, i, one_index);
+    looking_for_one_byte =
+        constant_time_select_w(equals1, 0, looking_for_one_byte);
+    bad |= looking_for_one_byte & ~equals0;
+  }
+
+  bad |= looking_for_one_byte;
+
+  if (bad) {
+    goto decoding_err;
+  }
+
+  one_index++;
+  size_t mlen = dblen - one_index;
+  if (max_out < mlen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    goto err;
+  }
+
+  OPENSSL_memcpy(out, db + one_index, mlen);
+  *out_len = mlen;
+  OPENSSL_free(db);
+  return 1;
+
+decoding_err:
+  // to avoid chosen ciphertext attacks, the error message should not reveal
+  // which kind of decoding error happened
+  OPENSSL_PUT_ERROR(RSA, RSA_R_OAEP_DECODING_ERROR);
+ err:
+  OPENSSL_free(db);
+  return 0;
+}
+
+static const uint8_t kPSSZeroes[] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+int RSA_verify_PKCS1_PSS_mgf1(const RSA *rsa, const uint8_t *mHash,
+                              const EVP_MD *Hash, const EVP_MD *mgf1Hash,
+                              const uint8_t *EM, int sLen) {
+  int i;
+  int ret = 0;
+  int maskedDBLen, MSBits, emLen;
+  size_t hLen;
+  const uint8_t *H;
+  uint8_t *DB = NULL;
+  EVP_MD_CTX ctx;
+  uint8_t H_[EVP_MAX_MD_SIZE];
+  EVP_MD_CTX_init(&ctx);
+
+  if (mgf1Hash == NULL) {
+    mgf1Hash = Hash;
+  }
+
+  hLen = EVP_MD_size(Hash);
+
+  // Negative sLen has special meanings:
+  //	-1	sLen == hLen
+  //	-2	salt length is autorecovered from signature
+  //	-N	reserved
+  if (sLen == -1) {
+    sLen = hLen;
+  } else if (sLen == -2) {
+    sLen = -2;
+  } else if (sLen < -2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  }
+
+  MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
+  emLen = RSA_size(rsa);
+  if (EM[0] & (0xFF << MSBits)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_FIRST_OCTET_INVALID);
+    goto err;
+  }
+  if (MSBits == 0) {
+    EM++;
+    emLen--;
+  }
+  if (emLen < (int)hLen + 2 || emLen < ((int)hLen + sLen + 2)) {
+    // sLen can be small negative
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    goto err;
+  }
+  if (EM[emLen - 1] != 0xbc) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_LAST_OCTET_INVALID);
+    goto err;
+  }
+  maskedDBLen = emLen - hLen - 1;
+  H = EM + maskedDBLen;
+  DB = OPENSSL_malloc(maskedDBLen);
+  if (!DB) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+  if (!PKCS1_MGF1(DB, maskedDBLen, H, hLen, mgf1Hash)) {
+    goto err;
+  }
+  for (i = 0; i < maskedDBLen; i++) {
+    DB[i] ^= EM[i];
+  }
+  if (MSBits) {
+    DB[0] &= 0xFF >> (8 - MSBits);
+  }
+  for (i = 0; DB[i] == 0 && i < (maskedDBLen - 1); i++) {
+    ;
+  }
+  if (DB[i++] != 0x1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_RECOVERY_FAILED);
+    goto err;
+  }
+  if (sLen >= 0 && (maskedDBLen - i) != sLen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  }
+  if (!EVP_DigestInit_ex(&ctx, Hash, NULL) ||
+      !EVP_DigestUpdate(&ctx, kPSSZeroes, sizeof(kPSSZeroes)) ||
+      !EVP_DigestUpdate(&ctx, mHash, hLen) ||
+      !EVP_DigestUpdate(&ctx, DB + i, maskedDBLen - i) ||
+      !EVP_DigestFinal_ex(&ctx, H_, NULL)) {
+    goto err;
+  }
+  if (OPENSSL_memcmp(H_, H, hLen)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_SIGNATURE);
+    ret = 0;
+  } else {
+    ret = 1;
+  }
+
+err:
+  OPENSSL_free(DB);
+  EVP_MD_CTX_cleanup(&ctx);
+
+  return ret;
+}
+
+int RSA_padding_add_PKCS1_PSS_mgf1(const RSA *rsa, unsigned char *EM,
+                                   const unsigned char *mHash,
+                                   const EVP_MD *Hash, const EVP_MD *mgf1Hash,
+                                   int sLenRequested) {
+  int ret = 0;
+  size_t maskedDBLen, MSBits, emLen;
+  size_t hLen;
+  unsigned char *H, *salt = NULL, *p;
+
+  if (mgf1Hash == NULL) {
+    mgf1Hash = Hash;
+  }
+
+  hLen = EVP_MD_size(Hash);
+
+  if (BN_is_zero(rsa->n)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_EMPTY_PUBLIC_KEY);
+    goto err;
+  }
+
+  MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
+  emLen = RSA_size(rsa);
+  if (MSBits == 0) {
+    assert(emLen >= 1);
+    *EM++ = 0;
+    emLen--;
+  }
+
+  if (emLen < hLen + 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    goto err;
+  }
+
+  // Negative sLenRequested has special meanings:
+  //   -1  sLen == hLen
+  //   -2  salt length is maximized
+  //   -N  reserved
+  size_t sLen;
+  if (sLenRequested == -1) {
+    sLen = hLen;
+  } else if (sLenRequested == -2) {
+    sLen = emLen - hLen - 2;
+  } else if (sLenRequested < 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  } else {
+    sLen = (size_t)sLenRequested;
+  }
+
+  if (emLen - hLen - 2 < sLen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    goto err;
+  }
+
+  if (sLen > 0) {
+    salt = OPENSSL_malloc(sLen);
+    if (!salt) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+    if (!RAND_bytes(salt, sLen)) {
+      goto err;
+    }
+  }
+  maskedDBLen = emLen - hLen - 1;
+  H = EM + maskedDBLen;
+
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+  int digest_ok = EVP_DigestInit_ex(&ctx, Hash, NULL) &&
+                  EVP_DigestUpdate(&ctx, kPSSZeroes, sizeof(kPSSZeroes)) &&
+                  EVP_DigestUpdate(&ctx, mHash, hLen) &&
+                  EVP_DigestUpdate(&ctx, salt, sLen) &&
+                  EVP_DigestFinal_ex(&ctx, H, NULL);
+  EVP_MD_CTX_cleanup(&ctx);
+  if (!digest_ok) {
+    goto err;
+  }
+
+  // Generate dbMask in place then perform XOR on it
+  if (!PKCS1_MGF1(EM, maskedDBLen, H, hLen, mgf1Hash)) {
+    goto err;
+  }
+
+  p = EM;
+
+  // Initial PS XORs with all zeroes which is a NOP so just update
+  // pointer. Note from a test above this value is guaranteed to
+  // be non-negative.
+  p += emLen - sLen - hLen - 2;
+  *p++ ^= 0x1;
+  if (sLen > 0) {
+    for (size_t i = 0; i < sLen; i++) {
+      *p++ ^= salt[i];
+    }
+  }
+  if (MSBits) {
+    EM[0] &= 0xFF >> (8 - MSBits);
+  }
+
+  // H is already in place so just set final 0xbc
+
+  EM[emLen - 1] = 0xbc;
+
+  ret = 1;
+
+err:
+  OPENSSL_free(salt);
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c.grpc_back
new file mode 100644
index 0000000..28f1b45
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/padding.c.grpc_back	
@@ -0,0 +1,695 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+#define RSA_PKCS1_PADDING_SIZE 11
+
+int RSA_padding_add_PKCS1_type_1(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len) {
+  // See RFC 8017, section 9.2.
+  if (to_len < RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  if (from_len > to_len - RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
+    return 0;
+  }
+
+  to[0] = 0;
+  to[1] = 1;
+  OPENSSL_memset(to + 2, 0xff, to_len - 3 - from_len);
+  to[to_len - from_len - 1] = 0;
+  OPENSSL_memcpy(to + to_len - from_len, from, from_len);
+  return 1;
+}
+
+int RSA_padding_check_PKCS1_type_1(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len) {
+  // See RFC 8017, section 9.2. This is part of signature verification and thus
+  // does not need to run in constant-time.
+  if (from_len < 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_SMALL);
+    return 0;
+  }
+
+  // Check the header.
+  if (from[0] != 0 || from[1] != 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BLOCK_TYPE_IS_NOT_01);
+    return 0;
+  }
+
+  // Scan over padded data, looking for the 00.
+  size_t pad;
+  for (pad = 2 /* header */; pad < from_len; pad++) {
+    if (from[pad] == 0x00) {
+      break;
+    }
+
+    if (from[pad] != 0xff) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_FIXED_HEADER_DECRYPT);
+      return 0;
+    }
+  }
+
+  if (pad == from_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_NULL_BEFORE_BLOCK_MISSING);
+    return 0;
+  }
+
+  if (pad < 2 /* header */ + 8) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_PAD_BYTE_COUNT);
+    return 0;
+  }
+
+  // Skip over the 00.
+  pad++;
+
+  if (from_len - pad > max_out) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, from + pad, from_len - pad);
+  *out_len = from_len - pad;
+  return 1;
+}
+
+static int rand_nonzero(uint8_t *out, size_t len) {
+  if (!RAND_bytes(out, len)) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < len; i++) {
+    while (out[i] == 0) {
+      if (!RAND_bytes(out + i, 1)) {
+        return 0;
+      }
+    }
+  }
+
+  return 1;
+}
+
+int RSA_padding_add_PKCS1_type_2(uint8_t *to, size_t to_len,
+                                 const uint8_t *from, size_t from_len) {
+  // See RFC 8017, section 7.2.1.
+  if (to_len < RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  if (from_len > to_len - RSA_PKCS1_PADDING_SIZE) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  to[0] = 0;
+  to[1] = 2;
+
+  size_t padding_len = to_len - 3 - from_len;
+  if (!rand_nonzero(to + 2, padding_len)) {
+    return 0;
+  }
+
+  to[2 + padding_len] = 0;
+  OPENSSL_memcpy(to + to_len - from_len, from, from_len);
+  return 1;
+}
+
+int RSA_padding_check_PKCS1_type_2(uint8_t *out, size_t *out_len,
+                                   size_t max_out, const uint8_t *from,
+                                   size_t from_len) {
+  if (from_len == 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_EMPTY_PUBLIC_KEY);
+    return 0;
+  }
+
+  // PKCS#1 v1.5 decryption. See "PKCS #1 v2.2: RSA Cryptography
+  // Standard", section 7.2.2.
+  if (from_len < RSA_PKCS1_PADDING_SIZE) {
+    // |from| is zero-padded to the size of the RSA modulus, a public value, so
+    // this can be rejected in non-constant time.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  crypto_word_t first_byte_is_zero = constant_time_eq_w(from[0], 0);
+  crypto_word_t second_byte_is_two = constant_time_eq_w(from[1], 2);
+
+  crypto_word_t zero_index = 0, looking_for_index = CONSTTIME_TRUE_W;
+  for (size_t i = 2; i < from_len; i++) {
+    crypto_word_t equals0 = constant_time_is_zero_w(from[i]);
+    zero_index =
+        constant_time_select_w(looking_for_index & equals0, i, zero_index);
+    looking_for_index = constant_time_select_w(equals0, 0, looking_for_index);
+  }
+
+  // The input must begin with 00 02.
+  crypto_word_t valid_index = first_byte_is_zero;
+  valid_index &= second_byte_is_two;
+
+  // We must have found the end of PS.
+  valid_index &= ~looking_for_index;
+
+  // PS must be at least 8 bytes long, and it starts two bytes into |from|.
+  valid_index &= constant_time_ge_w(zero_index, 2 + 8);
+
+  // Skip the zero byte.
+  zero_index++;
+
+  // NOTE: Although this logic attempts to be constant time, the API contracts
+  // of this function and |RSA_decrypt| with |RSA_PKCS1_PADDING| make it
+  // impossible to completely avoid Bleichenbacher's attack. Consumers should
+  // use |RSA_PADDING_NONE| and perform the padding check in constant-time
+  // combined with a swap to a random session key or other mitigation.
+  CONSTTIME_DECLASSIFY(&valid_index, sizeof(valid_index));
+  CONSTTIME_DECLASSIFY(&zero_index, sizeof(zero_index));
+
+  if (!valid_index) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PKCS_DECODING_ERROR);
+    return 0;
+  }
+
+  const size_t msg_len = from_len - zero_index;
+  if (msg_len > max_out) {
+    // This shouldn't happen because this function is always called with
+    // |max_out| as the key size and |from_len| is bounded by the key size.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PKCS_DECODING_ERROR);
+    return 0;
+  }
+
+  OPENSSL_memcpy(out, &from[zero_index], msg_len);
+  *out_len = msg_len;
+  return 1;
+}
+
+int RSA_padding_add_none(uint8_t *to, size_t to_len, const uint8_t *from,
+                         size_t from_len) {
+  if (from_len > to_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  if (from_len < to_len) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_SMALL);
+    return 0;
+  }
+
+  OPENSSL_memcpy(to, from, from_len);
+  return 1;
+}
+
+static int PKCS1_MGF1(uint8_t *out, size_t len, const uint8_t *seed,
+                      size_t seed_len, const EVP_MD *md) {
+  int ret = 0;
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+
+  size_t md_len = EVP_MD_size(md);
+
+  for (uint32_t i = 0; len > 0; i++) {
+    uint8_t counter[4];
+    counter[0] = (uint8_t)(i >> 24);
+    counter[1] = (uint8_t)(i >> 16);
+    counter[2] = (uint8_t)(i >> 8);
+    counter[3] = (uint8_t)i;
+    if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+        !EVP_DigestUpdate(&ctx, seed, seed_len) ||
+        !EVP_DigestUpdate(&ctx, counter, sizeof(counter))) {
+      goto err;
+    }
+
+    if (md_len <= len) {
+      if (!EVP_DigestFinal_ex(&ctx, out, NULL)) {
+        goto err;
+      }
+      out += md_len;
+      len -= md_len;
+    } else {
+      uint8_t digest[EVP_MAX_MD_SIZE];
+      if (!EVP_DigestFinal_ex(&ctx, digest, NULL)) {
+        goto err;
+      }
+      OPENSSL_memcpy(out, digest, len);
+      len = 0;
+    }
+  }
+
+  ret = 1;
+
+err:
+  EVP_MD_CTX_cleanup(&ctx);
+  return ret;
+}
+
+int RSA_padding_add_PKCS1_OAEP_mgf1(uint8_t *to, size_t to_len,
+                                    const uint8_t *from, size_t from_len,
+                                    const uint8_t *param, size_t param_len,
+                                    const EVP_MD *md, const EVP_MD *mgf1md) {
+  if (md == NULL) {
+    md = EVP_sha1();
+  }
+  if (mgf1md == NULL) {
+    mgf1md = md;
+  }
+
+  size_t mdlen = EVP_MD_size(md);
+
+  if (to_len < 2 * mdlen + 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  size_t emlen = to_len - 1;
+  if (from_len > emlen - 2 * mdlen - 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    return 0;
+  }
+
+  if (emlen < 2 * mdlen + 1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  to[0] = 0;
+  uint8_t *seed = to + 1;
+  uint8_t *db = to + mdlen + 1;
+
+  if (!EVP_Digest(param, param_len, db, NULL, md, NULL)) {
+    return 0;
+  }
+  OPENSSL_memset(db + mdlen, 0, emlen - from_len - 2 * mdlen - 1);
+  db[emlen - from_len - mdlen - 1] = 0x01;
+  OPENSSL_memcpy(db + emlen - from_len - mdlen, from, from_len);
+  if (!RAND_bytes(seed, mdlen)) {
+    return 0;
+  }
+
+  uint8_t *dbmask = OPENSSL_malloc(emlen - mdlen);
+  if (dbmask == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  if (!PKCS1_MGF1(dbmask, emlen - mdlen, seed, mdlen, mgf1md)) {
+    goto out;
+  }
+  for (size_t i = 0; i < emlen - mdlen; i++) {
+    db[i] ^= dbmask[i];
+  }
+
+  uint8_t seedmask[EVP_MAX_MD_SIZE];
+  if (!PKCS1_MGF1(seedmask, mdlen, db, emlen - mdlen, mgf1md)) {
+    goto out;
+  }
+  for (size_t i = 0; i < mdlen; i++) {
+    seed[i] ^= seedmask[i];
+  }
+  ret = 1;
+
+out:
+  OPENSSL_free(dbmask);
+  return ret;
+}
+
+int RSA_padding_check_PKCS1_OAEP_mgf1(uint8_t *out, size_t *out_len,
+                                      size_t max_out, const uint8_t *from,
+                                      size_t from_len, const uint8_t *param,
+                                      size_t param_len, const EVP_MD *md,
+                                      const EVP_MD *mgf1md) {
+  uint8_t *db = NULL;
+
+  if (md == NULL) {
+    md = EVP_sha1();
+  }
+  if (mgf1md == NULL) {
+    mgf1md = md;
+  }
+
+  size_t mdlen = EVP_MD_size(md);
+
+  // The encoded message is one byte smaller than the modulus to ensure that it
+  // doesn't end up greater than the modulus. Thus there's an extra "+1" here
+  // compared to https://tools.ietf.org/html/rfc2437#section-9.1.1.2.
+  if (from_len < 1 + 2*mdlen + 1) {
+    // 'from_len' is the length of the modulus, i.e. does not depend on the
+    // particular ciphertext.
+    goto decoding_err;
+  }
+
+  size_t dblen = from_len - mdlen - 1;
+  db = OPENSSL_malloc(dblen);
+  if (db == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  const uint8_t *maskedseed = from + 1;
+  const uint8_t *maskeddb = from + 1 + mdlen;
+
+  uint8_t seed[EVP_MAX_MD_SIZE];
+  if (!PKCS1_MGF1(seed, mdlen, maskeddb, dblen, mgf1md)) {
+    goto err;
+  }
+  for (size_t i = 0; i < mdlen; i++) {
+    seed[i] ^= maskedseed[i];
+  }
+
+  if (!PKCS1_MGF1(db, dblen, seed, mdlen, mgf1md)) {
+    goto err;
+  }
+  for (size_t i = 0; i < dblen; i++) {
+    db[i] ^= maskeddb[i];
+  }
+
+  uint8_t phash[EVP_MAX_MD_SIZE];
+  if (!EVP_Digest(param, param_len, phash, NULL, md, NULL)) {
+    goto err;
+  }
+
+  crypto_word_t bad = ~constant_time_is_zero_w(CRYPTO_memcmp(db, phash, mdlen));
+  bad |= ~constant_time_is_zero_w(from[0]);
+
+  crypto_word_t looking_for_one_byte = CONSTTIME_TRUE_W;
+  size_t one_index = 0;
+  for (size_t i = mdlen; i < dblen; i++) {
+    crypto_word_t equals1 = constant_time_eq_w(db[i], 1);
+    crypto_word_t equals0 = constant_time_eq_w(db[i], 0);
+    one_index =
+        constant_time_select_w(looking_for_one_byte & equals1, i, one_index);
+    looking_for_one_byte =
+        constant_time_select_w(equals1, 0, looking_for_one_byte);
+    bad |= looking_for_one_byte & ~equals0;
+  }
+
+  bad |= looking_for_one_byte;
+
+  if (bad) {
+    goto decoding_err;
+  }
+
+  one_index++;
+  size_t mlen = dblen - one_index;
+  if (max_out < mlen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    goto err;
+  }
+
+  OPENSSL_memcpy(out, db + one_index, mlen);
+  *out_len = mlen;
+  OPENSSL_free(db);
+  return 1;
+
+decoding_err:
+  // to avoid chosen ciphertext attacks, the error message should not reveal
+  // which kind of decoding error happened
+  OPENSSL_PUT_ERROR(RSA, RSA_R_OAEP_DECODING_ERROR);
+ err:
+  OPENSSL_free(db);
+  return 0;
+}
+
+static const uint8_t kPSSZeroes[] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+int RSA_verify_PKCS1_PSS_mgf1(const RSA *rsa, const uint8_t *mHash,
+                              const EVP_MD *Hash, const EVP_MD *mgf1Hash,
+                              const uint8_t *EM, int sLen) {
+  int i;
+  int ret = 0;
+  int maskedDBLen, MSBits, emLen;
+  size_t hLen;
+  const uint8_t *H;
+  uint8_t *DB = NULL;
+  EVP_MD_CTX ctx;
+  uint8_t H_[EVP_MAX_MD_SIZE];
+  EVP_MD_CTX_init(&ctx);
+
+  if (mgf1Hash == NULL) {
+    mgf1Hash = Hash;
+  }
+
+  hLen = EVP_MD_size(Hash);
+
+  // Negative sLen has special meanings:
+  //	-1	sLen == hLen
+  //	-2	salt length is autorecovered from signature
+  //	-N	reserved
+  if (sLen == -1) {
+    sLen = hLen;
+  } else if (sLen == -2) {
+    sLen = -2;
+  } else if (sLen < -2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  }
+
+  MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
+  emLen = RSA_size(rsa);
+  if (EM[0] & (0xFF << MSBits)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_FIRST_OCTET_INVALID);
+    goto err;
+  }
+  if (MSBits == 0) {
+    EM++;
+    emLen--;
+  }
+  if (emLen < (int)hLen + 2 || emLen < ((int)hLen + sLen + 2)) {
+    // sLen can be small negative
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE);
+    goto err;
+  }
+  if (EM[emLen - 1] != 0xbc) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_LAST_OCTET_INVALID);
+    goto err;
+  }
+  maskedDBLen = emLen - hLen - 1;
+  H = EM + maskedDBLen;
+  DB = OPENSSL_malloc(maskedDBLen);
+  if (!DB) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+  if (!PKCS1_MGF1(DB, maskedDBLen, H, hLen, mgf1Hash)) {
+    goto err;
+  }
+  for (i = 0; i < maskedDBLen; i++) {
+    DB[i] ^= EM[i];
+  }
+  if (MSBits) {
+    DB[0] &= 0xFF >> (8 - MSBits);
+  }
+  for (i = 0; DB[i] == 0 && i < (maskedDBLen - 1); i++) {
+    ;
+  }
+  if (DB[i++] != 0x1) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_RECOVERY_FAILED);
+    goto err;
+  }
+  if (sLen >= 0 && (maskedDBLen - i) != sLen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  }
+  if (!EVP_DigestInit_ex(&ctx, Hash, NULL) ||
+      !EVP_DigestUpdate(&ctx, kPSSZeroes, sizeof(kPSSZeroes)) ||
+      !EVP_DigestUpdate(&ctx, mHash, hLen) ||
+      !EVP_DigestUpdate(&ctx, DB + i, maskedDBLen - i) ||
+      !EVP_DigestFinal_ex(&ctx, H_, NULL)) {
+    goto err;
+  }
+  if (OPENSSL_memcmp(H_, H, hLen)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_SIGNATURE);
+    ret = 0;
+  } else {
+    ret = 1;
+  }
+
+err:
+  OPENSSL_free(DB);
+  EVP_MD_CTX_cleanup(&ctx);
+
+  return ret;
+}
+
+int RSA_padding_add_PKCS1_PSS_mgf1(const RSA *rsa, unsigned char *EM,
+                                   const unsigned char *mHash,
+                                   const EVP_MD *Hash, const EVP_MD *mgf1Hash,
+                                   int sLenRequested) {
+  int ret = 0;
+  size_t maskedDBLen, MSBits, emLen;
+  size_t hLen;
+  unsigned char *H, *salt = NULL, *p;
+
+  if (mgf1Hash == NULL) {
+    mgf1Hash = Hash;
+  }
+
+  hLen = EVP_MD_size(Hash);
+
+  if (BN_is_zero(rsa->n)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_EMPTY_PUBLIC_KEY);
+    goto err;
+  }
+
+  MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
+  emLen = RSA_size(rsa);
+  if (MSBits == 0) {
+    assert(emLen >= 1);
+    *EM++ = 0;
+    emLen--;
+  }
+
+  if (emLen < hLen + 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    goto err;
+  }
+
+  // Negative sLenRequested has special meanings:
+  //   -1  sLen == hLen
+  //   -2  salt length is maximized
+  //   -N  reserved
+  size_t sLen;
+  if (sLenRequested == -1) {
+    sLen = hLen;
+  } else if (sLenRequested == -2) {
+    sLen = emLen - hLen - 2;
+  } else if (sLenRequested < 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_SLEN_CHECK_FAILED);
+    goto err;
+  } else {
+    sLen = (size_t)sLenRequested;
+  }
+
+  if (emLen - hLen - 2 < sLen) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
+    goto err;
+  }
+
+  if (sLen > 0) {
+    salt = OPENSSL_malloc(sLen);
+    if (!salt) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+    if (!RAND_bytes(salt, sLen)) {
+      goto err;
+    }
+  }
+  maskedDBLen = emLen - hLen - 1;
+  H = EM + maskedDBLen;
+
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+  int digest_ok = EVP_DigestInit_ex(&ctx, Hash, NULL) &&
+                  EVP_DigestUpdate(&ctx, kPSSZeroes, sizeof(kPSSZeroes)) &&
+                  EVP_DigestUpdate(&ctx, mHash, hLen) &&
+                  EVP_DigestUpdate(&ctx, salt, sLen) &&
+                  EVP_DigestFinal_ex(&ctx, H, NULL);
+  EVP_MD_CTX_cleanup(&ctx);
+  if (!digest_ok) {
+    goto err;
+  }
+
+  // Generate dbMask in place then perform XOR on it
+  if (!PKCS1_MGF1(EM, maskedDBLen, H, hLen, mgf1Hash)) {
+    goto err;
+  }
+
+  p = EM;
+
+  // Initial PS XORs with all zeroes which is a NOP so just update
+  // pointer. Note from a test above this value is guaranteed to
+  // be non-negative.
+  p += emLen - sLen - hLen - 2;
+  *p++ ^= 0x1;
+  if (sLen > 0) {
+    for (size_t i = 0; i < sLen; i++) {
+      *p++ ^= salt[i];
+    }
+  }
+  if (MSBits) {
+    EM[0] &= 0xFF >> (8 - MSBits);
+  }
+
+  // H is already in place so just set final 0xbc
+
+  EM[emLen - 1] = 0xbc;
+
+  ret = 1;
+
+err:
+  OPENSSL_free(salt);
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c
new file mode 100644
index 0000000..cfe51b3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c	
@@ -0,0 +1,885 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/rsa.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/thread.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+#include "internal.h"
+
+
+// RSA_R_BLOCK_TYPE_IS_NOT_02 is part of the legacy SSLv23 padding scheme.
+// Cryptography.io depends on this error code.
+OPENSSL_DECLARE_ERROR_REASON(RSA, BLOCK_TYPE_IS_NOT_02)
+
+DEFINE_STATIC_EX_DATA_CLASS(g_rsa_ex_data_class)
+
+RSA *RSA_new(void) { return RSA_new_method(NULL); }
+
+RSA *RSA_new_method(const ENGINE *engine) {
+  RSA *rsa = OPENSSL_malloc(sizeof(RSA));
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(rsa, 0, sizeof(RSA));
+
+  if (engine) {
+    rsa->meth = ENGINE_get_RSA_method(engine);
+  }
+
+  if (rsa->meth == NULL) {
+    rsa->meth = (RSA_METHOD *) RSA_default_method();
+  }
+  METHOD_ref(rsa->meth);
+
+  rsa->references = 1;
+  rsa->flags = rsa->meth->flags;
+  CRYPTO_MUTEX_init(&rsa->lock);
+  CRYPTO_new_ex_data(&rsa->ex_data);
+
+  if (rsa->meth->init && !rsa->meth->init(rsa)) {
+    CRYPTO_free_ex_data(g_rsa_ex_data_class_bss_get(), rsa, &rsa->ex_data);
+    CRYPTO_MUTEX_cleanup(&rsa->lock);
+    METHOD_unref(rsa->meth);
+    OPENSSL_free(rsa);
+    return NULL;
+  }
+
+  return rsa;
+}
+
+void RSA_free(RSA *rsa) {
+  unsigned u;
+
+  if (rsa == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&rsa->references)) {
+    return;
+  }
+
+  if (rsa->meth->finish) {
+    rsa->meth->finish(rsa);
+  }
+  METHOD_unref(rsa->meth);
+
+  CRYPTO_free_ex_data(g_rsa_ex_data_class_bss_get(), rsa, &rsa->ex_data);
+
+  BN_free(rsa->n);
+  BN_free(rsa->e);
+  BN_free(rsa->d);
+  BN_free(rsa->p);
+  BN_free(rsa->q);
+  BN_free(rsa->dmp1);
+  BN_free(rsa->dmq1);
+  BN_free(rsa->iqmp);
+  BN_MONT_CTX_free(rsa->mont_n);
+  BN_MONT_CTX_free(rsa->mont_p);
+  BN_MONT_CTX_free(rsa->mont_q);
+  BN_free(rsa->d_fixed);
+  BN_free(rsa->dmp1_fixed);
+  BN_free(rsa->dmq1_fixed);
+  BN_free(rsa->inv_small_mod_large_mont);
+  for (u = 0; u < rsa->num_blindings; u++) {
+    BN_BLINDING_free(rsa->blindings[u]);
+  }
+  OPENSSL_free(rsa->blindings);
+  OPENSSL_free(rsa->blindings_inuse);
+  CRYPTO_MUTEX_cleanup(&rsa->lock);
+  OPENSSL_free(rsa);
+}
+
+int RSA_up_ref(RSA *rsa) {
+  CRYPTO_refcount_inc(&rsa->references);
+  return 1;
+}
+
+unsigned RSA_bits(const RSA *rsa) { return BN_num_bits(rsa->n); }
+
+void RSA_get0_key(const RSA *rsa, const BIGNUM **out_n, const BIGNUM **out_e,
+                  const BIGNUM **out_d) {
+  if (out_n != NULL) {
+    *out_n = rsa->n;
+  }
+  if (out_e != NULL) {
+    *out_e = rsa->e;
+  }
+  if (out_d != NULL) {
+    *out_d = rsa->d;
+  }
+}
+
+void RSA_get0_factors(const RSA *rsa, const BIGNUM **out_p,
+                      const BIGNUM **out_q) {
+  if (out_p != NULL) {
+    *out_p = rsa->p;
+  }
+  if (out_q != NULL) {
+    *out_q = rsa->q;
+  }
+}
+
+void RSA_get0_crt_params(const RSA *rsa, const BIGNUM **out_dmp1,
+                         const BIGNUM **out_dmq1, const BIGNUM **out_iqmp) {
+  if (out_dmp1 != NULL) {
+    *out_dmp1 = rsa->dmp1;
+  }
+  if (out_dmq1 != NULL) {
+    *out_dmq1 = rsa->dmq1;
+  }
+  if (out_iqmp != NULL) {
+    *out_iqmp = rsa->iqmp;
+  }
+}
+
+int RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d) {
+  if ((rsa->n == NULL && n == NULL) ||
+      (rsa->e == NULL && e == NULL)) {
+    return 0;
+  }
+
+  if (n != NULL) {
+    BN_free(rsa->n);
+    rsa->n = n;
+  }
+  if (e != NULL) {
+    BN_free(rsa->e);
+    rsa->e = e;
+  }
+  if (d != NULL) {
+    BN_free(rsa->d);
+    rsa->d = d;
+  }
+
+  return 1;
+}
+
+int RSA_set0_factors(RSA *rsa, BIGNUM *p, BIGNUM *q) {
+  if ((rsa->p == NULL && p == NULL) ||
+      (rsa->q == NULL && q == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(rsa->p);
+    rsa->p = p;
+  }
+  if (q != NULL) {
+    BN_free(rsa->q);
+    rsa->q = q;
+  }
+
+  return 1;
+}
+
+int RSA_set0_crt_params(RSA *rsa, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) {
+  if ((rsa->dmp1 == NULL && dmp1 == NULL) ||
+      (rsa->dmq1 == NULL && dmq1 == NULL) ||
+      (rsa->iqmp == NULL && iqmp == NULL)) {
+    return 0;
+  }
+
+  if (dmp1 != NULL) {
+    BN_free(rsa->dmp1);
+    rsa->dmp1 = dmp1;
+  }
+  if (dmq1 != NULL) {
+    BN_free(rsa->dmq1);
+    rsa->dmq1 = dmq1;
+  }
+  if (iqmp != NULL) {
+    BN_free(rsa->iqmp);
+    rsa->iqmp = iqmp;
+  }
+
+  return 1;
+}
+
+int RSA_public_encrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                       int padding) {
+  size_t out_len;
+
+  if (!RSA_encrypt(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                 const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->meth->sign_raw) {
+    return rsa->meth->sign_raw(rsa, out_len, out, max_out, in, in_len, padding);
+  }
+
+  return rsa_default_sign_raw(rsa, out_len, out, max_out, in, in_len, padding);
+}
+
+int RSA_private_encrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                        int padding) {
+  size_t out_len;
+
+  if (!RSA_sign_raw(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->meth->decrypt) {
+    return rsa->meth->decrypt(rsa, out_len, out, max_out, in, in_len, padding);
+  }
+
+  return rsa_default_decrypt(rsa, out_len, out, max_out, in, in_len, padding);
+}
+
+int RSA_private_decrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                        int padding) {
+  size_t out_len;
+
+  if (!RSA_decrypt(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_public_decrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                       int padding) {
+  size_t out_len;
+
+  if (!RSA_verify_raw(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+unsigned RSA_size(const RSA *rsa) {
+  if (rsa->meth->size) {
+    return rsa->meth->size(rsa);
+  }
+
+  return rsa_default_size(rsa);
+}
+
+int RSA_is_opaque(const RSA *rsa) {
+  return rsa->meth && (rsa->meth->flags & RSA_FLAG_OPAQUE);
+}
+
+int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(g_rsa_ex_data_class_bss_get(), &index, argl,
+                               argp, free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int RSA_set_ex_data(RSA *rsa, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&rsa->ex_data, idx, arg);
+}
+
+void *RSA_get_ex_data(const RSA *rsa, int idx) {
+  return CRYPTO_get_ex_data(&rsa->ex_data, idx);
+}
+
+// SSL_SIG_LENGTH is the size of an SSL/TLS (prior to TLS 1.2) signature: it's
+// the length of an MD5 and SHA1 hash.
+static const unsigned SSL_SIG_LENGTH = 36;
+
+// pkcs1_sig_prefix contains the ASN.1, DER encoded prefix for a hash that is
+// to be signed with PKCS#1.
+struct pkcs1_sig_prefix {
+  // nid identifies the hash function.
+  int nid;
+  // hash_len is the expected length of the hash function.
+  uint8_t hash_len;
+  // len is the number of bytes of |bytes| which are valid.
+  uint8_t len;
+  // bytes contains the DER bytes.
+  uint8_t bytes[19];
+};
+
+// kPKCS1SigPrefixes contains the ASN.1 prefixes for PKCS#1 signatures with
+// different hash functions.
+static const struct pkcs1_sig_prefix kPKCS1SigPrefixes[] = {
+    {
+     NID_md5,
+     MD5_DIGEST_LENGTH,
+     18,
+     {0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+      0x02, 0x05, 0x05, 0x00, 0x04, 0x10},
+    },
+    {
+     NID_sha1,
+     SHA_DIGEST_LENGTH,
+     15,
+     {0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05,
+      0x00, 0x04, 0x14},
+    },
+    {
+     NID_sha224,
+     SHA224_DIGEST_LENGTH,
+     19,
+     {0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c},
+    },
+    {
+     NID_sha256,
+     SHA256_DIGEST_LENGTH,
+     19,
+     {0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20},
+    },
+    {
+     NID_sha384,
+     SHA384_DIGEST_LENGTH,
+     19,
+     {0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30},
+    },
+    {
+     NID_sha512,
+     SHA512_DIGEST_LENGTH,
+     19,
+     {0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40},
+    },
+    {
+     NID_undef, 0, 0, {0},
+    },
+};
+
+int RSA_add_pkcs1_prefix(uint8_t **out_msg, size_t *out_msg_len,
+                         int *is_alloced, int hash_nid, const uint8_t *msg,
+                         size_t msg_len) {
+  unsigned i;
+
+  if (hash_nid == NID_md5_sha1) {
+    // Special case: SSL signature, just check the length.
+    if (msg_len != SSL_SIG_LENGTH) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+      return 0;
+    }
+
+    *out_msg = (uint8_t*) msg;
+    *out_msg_len = SSL_SIG_LENGTH;
+    *is_alloced = 0;
+    return 1;
+  }
+
+  for (i = 0; kPKCS1SigPrefixes[i].nid != NID_undef; i++) {
+    const struct pkcs1_sig_prefix *sig_prefix = &kPKCS1SigPrefixes[i];
+    if (sig_prefix->nid != hash_nid) {
+      continue;
+    }
+
+    if (msg_len != sig_prefix->hash_len) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+      return 0;
+    }
+
+    const uint8_t* prefix = sig_prefix->bytes;
+    unsigned prefix_len = sig_prefix->len;
+    unsigned signed_msg_len;
+    uint8_t *signed_msg;
+
+    signed_msg_len = prefix_len + msg_len;
+    if (signed_msg_len < prefix_len) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_TOO_LONG);
+      return 0;
+    }
+
+    signed_msg = OPENSSL_malloc(signed_msg_len);
+    if (!signed_msg) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+
+    OPENSSL_memcpy(signed_msg, prefix, prefix_len);
+    OPENSSL_memcpy(signed_msg + prefix_len, msg, msg_len);
+
+    *out_msg = signed_msg;
+    *out_msg_len = signed_msg_len;
+    *is_alloced = 1;
+
+    return 1;
+  }
+
+  OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_ALGORITHM_TYPE);
+  return 0;
+}
+
+int RSA_sign(int hash_nid, const uint8_t *in, unsigned in_len, uint8_t *out,
+             unsigned *out_len, RSA *rsa) {
+  const unsigned rsa_size = RSA_size(rsa);
+  int ret = 0;
+  uint8_t *signed_msg = NULL;
+  size_t signed_msg_len = 0;
+  int signed_msg_is_alloced = 0;
+  size_t size_t_out_len;
+
+  if (rsa->meth->sign) {
+    return rsa->meth->sign(hash_nid, in, in_len, out, out_len, rsa);
+  }
+
+  if (!RSA_add_pkcs1_prefix(&signed_msg, &signed_msg_len,
+                            &signed_msg_is_alloced, hash_nid, in, in_len) ||
+      !RSA_sign_raw(rsa, &size_t_out_len, out, rsa_size, signed_msg,
+                    signed_msg_len, RSA_PKCS1_PADDING)) {
+    goto err;
+  }
+
+  *out_len = size_t_out_len;
+  ret = 1;
+
+err:
+  if (signed_msg_is_alloced) {
+    OPENSSL_free(signed_msg);
+  }
+  return ret;
+}
+
+int RSA_sign_pss_mgf1(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                      const uint8_t *in, size_t in_len, const EVP_MD *md,
+                      const EVP_MD *mgf1_md, int salt_len) {
+  if (in_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  size_t padded_len = RSA_size(rsa);
+  uint8_t *padded = OPENSSL_malloc(padded_len);
+  if (padded == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret =
+      RSA_padding_add_PKCS1_PSS_mgf1(rsa, padded, in, md, mgf1_md, salt_len) &&
+      RSA_sign_raw(rsa, out_len, out, max_out, padded, padded_len,
+                   RSA_NO_PADDING);
+  OPENSSL_free(padded);
+  return ret;
+}
+
+int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len,
+               const uint8_t *sig, size_t sig_len, RSA *rsa) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const size_t rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int ret = 0;
+  uint8_t *signed_msg = NULL;
+  size_t signed_msg_len = 0, len;
+  int signed_msg_is_alloced = 0;
+
+  if (hash_nid == NID_md5_sha1 && msg_len != SSL_SIG_LENGTH) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  buf = OPENSSL_malloc(rsa_size);
+  if (!buf) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!RSA_verify_raw(rsa, &len, buf, rsa_size, sig, sig_len,
+                      RSA_PKCS1_PADDING)) {
+    goto out;
+  }
+
+  if (!RSA_add_pkcs1_prefix(&signed_msg, &signed_msg_len,
+                            &signed_msg_is_alloced, hash_nid, msg, msg_len)) {
+    goto out;
+  }
+
+  // Check that no other information follows the hash value (FIPS 186-4 Section
+  // 5.5) and it matches the expected hash.
+  if (len != signed_msg_len || OPENSSL_memcmp(buf, signed_msg, len) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_SIGNATURE);
+    goto out;
+  }
+
+  ret = 1;
+
+out:
+  OPENSSL_free(buf);
+  if (signed_msg_is_alloced) {
+    OPENSSL_free(signed_msg);
+  }
+  return ret;
+}
+
+int RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg, size_t msg_len,
+                        const EVP_MD *md, const EVP_MD *mgf1_md, int salt_len,
+                        const uint8_t *sig, size_t sig_len) {
+  if (msg_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  size_t em_len = RSA_size(rsa);
+  uint8_t *em = OPENSSL_malloc(em_len);
+  if (em == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  if (!RSA_verify_raw(rsa, &em_len, em, em_len, sig, sig_len, RSA_NO_PADDING)) {
+    goto err;
+  }
+
+  if (em_len != RSA_size(rsa)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = RSA_verify_PKCS1_PSS_mgf1(rsa, msg, md, mgf1_md, em, salt_len);
+
+err:
+  OPENSSL_free(em);
+  return ret;
+}
+
+static int check_mod_inverse(int *out_ok, const BIGNUM *a, const BIGNUM *ainv,
+                             const BIGNUM *m, int check_reduced, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ret = tmp != NULL &&
+            bn_mul_consttime(tmp, a, ainv, ctx) &&
+            bn_div_consttime(NULL, tmp, tmp, m, ctx);
+  if (ret) {
+    *out_ok = BN_is_one(tmp);
+    if (check_reduced && (BN_is_negative(ainv) || BN_cmp(ainv, m) >= 0)) {
+      *out_ok = 0;
+    }
+  }
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int RSA_check_key(const RSA *key) {
+  BIGNUM n, pm1, qm1, lcm, dmp1, dmq1, iqmp_times_q;
+  BN_CTX *ctx;
+  int ok = 0, has_crt_values;
+
+  if (RSA_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    return 1;
+  }
+
+  if ((key->p != NULL) != (key->q != NULL)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ONLY_ONE_OF_P_Q_GIVEN);
+    return 0;
+  }
+
+  if (!key->n || !key->e) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  if (!key->d || !key->p) {
+    // For a public key, or without p and q, there's nothing that can be
+    // checked.
+    return 1;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  BN_init(&n);
+  BN_init(&pm1);
+  BN_init(&qm1);
+  BN_init(&lcm);
+  BN_init(&dmp1);
+  BN_init(&dmq1);
+  BN_init(&iqmp_times_q);
+
+  int d_ok;
+  if (!bn_mul_consttime(&n, key->p, key->q, ctx) ||
+      // lcm = lcm(p, q)
+      !bn_usub_consttime(&pm1, key->p, BN_value_one()) ||
+      !bn_usub_consttime(&qm1, key->q, BN_value_one()) ||
+      !bn_lcm_consttime(&lcm, &pm1, &qm1, ctx) ||
+      // Other implementations use the Euler totient rather than the Carmichael
+      // totient, so allow unreduced |key->d|.
+      !check_mod_inverse(&d_ok, key->e, key->d, &lcm,
+                         0 /* don't require reduced */, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+    goto out;
+  }
+
+  if (BN_cmp(&n, key->n) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_N_NOT_EQUAL_P_Q);
+    goto out;
+  }
+
+  if (!d_ok) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_D_E_NOT_CONGRUENT_TO_1);
+    goto out;
+  }
+
+  if (BN_is_negative(key->d) || BN_cmp(key->d, key->n) >= 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_D_OUT_OF_RANGE);
+    goto out;
+  }
+
+  has_crt_values = key->dmp1 != NULL;
+  if (has_crt_values != (key->dmq1 != NULL) ||
+      has_crt_values != (key->iqmp != NULL)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INCONSISTENT_SET_OF_CRT_VALUES);
+    goto out;
+  }
+
+  if (has_crt_values) {
+    int dmp1_ok, dmq1_ok, iqmp_ok;
+    if (!check_mod_inverse(&dmp1_ok, key->e, key->dmp1, &pm1,
+                           1 /* check reduced */, ctx) ||
+        !check_mod_inverse(&dmq1_ok, key->e, key->dmq1, &qm1,
+                           1 /* check reduced */, ctx) ||
+        !check_mod_inverse(&iqmp_ok, key->q, key->iqmp, key->p,
+                           1 /* check reduced */, ctx)) {
+      OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+      goto out;
+    }
+
+    if (!dmp1_ok || !dmq1_ok || !iqmp_ok) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_CRT_VALUES_INCORRECT);
+      goto out;
+    }
+  }
+
+  ok = 1;
+
+out:
+  BN_free(&n);
+  BN_free(&pm1);
+  BN_free(&qm1);
+  BN_free(&lcm);
+  BN_free(&dmp1);
+  BN_free(&dmq1);
+  BN_free(&iqmp_times_q);
+  BN_CTX_free(ctx);
+
+  return ok;
+}
+
+
+// This is the product of the 132 smallest odd primes, from 3 to 751.
+static const BN_ULONG kSmallFactorsLimbs[] = {
+    TOBN(0xc4309333, 0x3ef4e3e1), TOBN(0x71161eb6, 0xcd2d655f),
+    TOBN(0x95e2238c, 0x0bf94862), TOBN(0x3eb233d3, 0x24f7912b),
+    TOBN(0x6b55514b, 0xbf26c483), TOBN(0x0a84d817, 0x5a144871),
+    TOBN(0x77d12fee, 0x9b82210a), TOBN(0xdb5b93c2, 0x97f050b3),
+    TOBN(0x4acad6b9, 0x4d6c026b), TOBN(0xeb7751f3, 0x54aec893),
+    TOBN(0xdba53368, 0x36bc85c4), TOBN(0xd85a1b28, 0x7f5ec78e),
+    TOBN(0x2eb072d8, 0x6b322244), TOBN(0xbba51112, 0x5e2b3aea),
+    TOBN(0x36ed1a6c, 0x0e2486bf), TOBN(0x5f270460, 0xec0c5727),
+    0x000017b1
+};
+
+DEFINE_LOCAL_DATA(BIGNUM, g_small_factors) {
+  out->d = (BN_ULONG *) kSmallFactorsLimbs;
+  out->width = OPENSSL_ARRAY_SIZE(kSmallFactorsLimbs);
+  out->dmax = out->width;
+  out->neg = 0;
+  out->flags = BN_FLG_STATIC_DATA;
+}
+
+int RSA_check_fips(RSA *key) {
+  if (RSA_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PUBLIC_KEY_VALIDATION_FAILED);
+    return 0;
+  }
+
+  if (!RSA_check_key(key)) {
+    return 0;
+  }
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  BIGNUM small_gcd;
+  BN_init(&small_gcd);
+
+  int ret = 1;
+
+  // Perform partial public key validation of RSA keys (SP 800-89 5.3.3).
+  // Although this is not for primality testing, SP 800-89 cites an RSA
+  // primality testing algorithm, so we use |BN_prime_checks_for_generation| to
+  // match. This is only a plausibility test and we expect the value to be
+  // composite, so too few iterations will cause us to reject the key, not use
+  // an implausible one.
+  enum bn_primality_result_t primality_result;
+  if (BN_num_bits(key->e) <= 16 ||
+      BN_num_bits(key->e) > 256 ||
+      !BN_is_odd(key->n) ||
+      !BN_is_odd(key->e) ||
+      !BN_gcd(&small_gcd, key->n, g_small_factors(), ctx) ||
+      !BN_is_one(&small_gcd) ||
+      !BN_enhanced_miller_rabin_primality_test(&primality_result, key->n,
+                                               BN_prime_checks_for_generation,
+                                               ctx, NULL) ||
+      primality_result != bn_non_prime_power_composite) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PUBLIC_KEY_VALIDATION_FAILED);
+    ret = 0;
+  }
+
+  BN_free(&small_gcd);
+  BN_CTX_free(ctx);
+
+  if (!ret || key->d == NULL || key->p == NULL) {
+    // On a failure or on only a public key, there's nothing else can be
+    // checked.
+    return ret;
+  }
+
+  // FIPS pairwise consistency test (FIPS 140-2 4.9.2). Per FIPS 140-2 IG,
+  // section 9.9, it is not known whether |rsa| will be used for signing or
+  // encryption, so either pair-wise consistency self-test is acceptable. We
+  // perform a signing test.
+  uint8_t data[32] = {0};
+  unsigned sig_len = RSA_size(key);
+  uint8_t *sig = OPENSSL_malloc(sig_len);
+  if (sig == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!RSA_sign(NID_sha256, data, sizeof(data), sig, &sig_len, key)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    ret = 0;
+    goto cleanup;
+  }
+#if defined(BORINGSSL_FIPS_BREAK_RSA_PWCT)
+  data[0] = ~data[0];
+#endif
+  if (!RSA_verify(NID_sha256, data, sizeof(data), sig, sig_len, key)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    ret = 0;
+  }
+
+cleanup:
+  OPENSSL_free(sig);
+
+  return ret;
+}
+
+int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  if (rsa->meth->private_transform) {
+    return rsa->meth->private_transform(rsa, out, in, len);
+  }
+
+  return rsa_default_private_transform(rsa, out, in, len);
+}
+
+int RSA_flags(const RSA *rsa) { return rsa->flags; }
+
+int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) {
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c.grpc_back
new file mode 100644
index 0000000..0830b05
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa.c.grpc_back	
@@ -0,0 +1,885 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/rsa.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/digest.h>
+#include <openssl/engine.h>
+#include <openssl/err.h>
+#include <openssl/ex_data.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/sha.h>
+#include <openssl/thread.h>
+
+#include "../bn/internal.h"
+#include "../delocate.h"
+#include "../../internal.h"
+#include "internal.h"
+
+
+// RSA_R_BLOCK_TYPE_IS_NOT_02 is part of the legacy SSLv23 padding scheme.
+// Cryptography.io depends on this error code.
+OPENSSL_DECLARE_ERROR_REASON(RSA, BLOCK_TYPE_IS_NOT_02)
+
+DEFINE_STATIC_EX_DATA_CLASS(g_rsa_ex_data_class)
+
+RSA *RSA_new(void) { return RSA_new_method(NULL); }
+
+RSA *RSA_new_method(const ENGINE *engine) {
+  RSA *rsa = OPENSSL_malloc(sizeof(RSA));
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memset(rsa, 0, sizeof(RSA));
+
+  if (engine) {
+    rsa->meth = ENGINE_get_RSA_method(engine);
+  }
+
+  if (rsa->meth == NULL) {
+    rsa->meth = (RSA_METHOD *) RSA_default_method();
+  }
+  METHOD_ref(rsa->meth);
+
+  rsa->references = 1;
+  rsa->flags = rsa->meth->flags;
+  CRYPTO_MUTEX_init(&rsa->lock);
+  CRYPTO_new_ex_data(&rsa->ex_data);
+
+  if (rsa->meth->init && !rsa->meth->init(rsa)) {
+    CRYPTO_free_ex_data(g_rsa_ex_data_class_bss_get(), rsa, &rsa->ex_data);
+    CRYPTO_MUTEX_cleanup(&rsa->lock);
+    METHOD_unref(rsa->meth);
+    OPENSSL_free(rsa);
+    return NULL;
+  }
+
+  return rsa;
+}
+
+void RSA_free(RSA *rsa) {
+  unsigned u;
+
+  if (rsa == NULL) {
+    return;
+  }
+
+  if (!CRYPTO_refcount_dec_and_test_zero(&rsa->references)) {
+    return;
+  }
+
+  if (rsa->meth->finish) {
+    rsa->meth->finish(rsa);
+  }
+  METHOD_unref(rsa->meth);
+
+  CRYPTO_free_ex_data(g_rsa_ex_data_class_bss_get(), rsa, &rsa->ex_data);
+
+  BN_free(rsa->n);
+  BN_free(rsa->e);
+  BN_free(rsa->d);
+  BN_free(rsa->p);
+  BN_free(rsa->q);
+  BN_free(rsa->dmp1);
+  BN_free(rsa->dmq1);
+  BN_free(rsa->iqmp);
+  BN_MONT_CTX_free(rsa->mont_n);
+  BN_MONT_CTX_free(rsa->mont_p);
+  BN_MONT_CTX_free(rsa->mont_q);
+  BN_free(rsa->d_fixed);
+  BN_free(rsa->dmp1_fixed);
+  BN_free(rsa->dmq1_fixed);
+  BN_free(rsa->inv_small_mod_large_mont);
+  for (u = 0; u < rsa->num_blindings; u++) {
+    BN_BLINDING_free(rsa->blindings[u]);
+  }
+  OPENSSL_free(rsa->blindings);
+  OPENSSL_free(rsa->blindings_inuse);
+  CRYPTO_MUTEX_cleanup(&rsa->lock);
+  OPENSSL_free(rsa);
+}
+
+int RSA_up_ref(RSA *rsa) {
+  CRYPTO_refcount_inc(&rsa->references);
+  return 1;
+}
+
+unsigned RSA_bits(const RSA *rsa) { return BN_num_bits(rsa->n); }
+
+void RSA_get0_key(const RSA *rsa, const BIGNUM **out_n, const BIGNUM **out_e,
+                  const BIGNUM **out_d) {
+  if (out_n != NULL) {
+    *out_n = rsa->n;
+  }
+  if (out_e != NULL) {
+    *out_e = rsa->e;
+  }
+  if (out_d != NULL) {
+    *out_d = rsa->d;
+  }
+}
+
+void RSA_get0_factors(const RSA *rsa, const BIGNUM **out_p,
+                      const BIGNUM **out_q) {
+  if (out_p != NULL) {
+    *out_p = rsa->p;
+  }
+  if (out_q != NULL) {
+    *out_q = rsa->q;
+  }
+}
+
+void RSA_get0_crt_params(const RSA *rsa, const BIGNUM **out_dmp1,
+                         const BIGNUM **out_dmq1, const BIGNUM **out_iqmp) {
+  if (out_dmp1 != NULL) {
+    *out_dmp1 = rsa->dmp1;
+  }
+  if (out_dmq1 != NULL) {
+    *out_dmq1 = rsa->dmq1;
+  }
+  if (out_iqmp != NULL) {
+    *out_iqmp = rsa->iqmp;
+  }
+}
+
+int RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d) {
+  if ((rsa->n == NULL && n == NULL) ||
+      (rsa->e == NULL && e == NULL)) {
+    return 0;
+  }
+
+  if (n != NULL) {
+    BN_free(rsa->n);
+    rsa->n = n;
+  }
+  if (e != NULL) {
+    BN_free(rsa->e);
+    rsa->e = e;
+  }
+  if (d != NULL) {
+    BN_free(rsa->d);
+    rsa->d = d;
+  }
+
+  return 1;
+}
+
+int RSA_set0_factors(RSA *rsa, BIGNUM *p, BIGNUM *q) {
+  if ((rsa->p == NULL && p == NULL) ||
+      (rsa->q == NULL && q == NULL)) {
+    return 0;
+  }
+
+  if (p != NULL) {
+    BN_free(rsa->p);
+    rsa->p = p;
+  }
+  if (q != NULL) {
+    BN_free(rsa->q);
+    rsa->q = q;
+  }
+
+  return 1;
+}
+
+int RSA_set0_crt_params(RSA *rsa, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp) {
+  if ((rsa->dmp1 == NULL && dmp1 == NULL) ||
+      (rsa->dmq1 == NULL && dmq1 == NULL) ||
+      (rsa->iqmp == NULL && iqmp == NULL)) {
+    return 0;
+  }
+
+  if (dmp1 != NULL) {
+    BN_free(rsa->dmp1);
+    rsa->dmp1 = dmp1;
+  }
+  if (dmq1 != NULL) {
+    BN_free(rsa->dmq1);
+    rsa->dmq1 = dmq1;
+  }
+  if (iqmp != NULL) {
+    BN_free(rsa->iqmp);
+    rsa->iqmp = iqmp;
+  }
+
+  return 1;
+}
+
+int RSA_public_encrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                       int padding) {
+  size_t out_len;
+
+  if (!RSA_encrypt(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                 const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->meth->sign_raw) {
+    return rsa->meth->sign_raw(rsa, out_len, out, max_out, in, in_len, padding);
+  }
+
+  return rsa_default_sign_raw(rsa, out_len, out, max_out, in, in_len, padding);
+}
+
+int RSA_private_encrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                        int padding) {
+  size_t out_len;
+
+  if (!RSA_sign_raw(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->meth->decrypt) {
+    return rsa->meth->decrypt(rsa, out_len, out, max_out, in, in_len, padding);
+  }
+
+  return rsa_default_decrypt(rsa, out_len, out, max_out, in, in_len, padding);
+}
+
+int RSA_private_decrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                        int padding) {
+  size_t out_len;
+
+  if (!RSA_decrypt(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+int RSA_public_decrypt(size_t flen, const uint8_t *from, uint8_t *to, RSA *rsa,
+                       int padding) {
+  size_t out_len;
+
+  if (!RSA_verify_raw(rsa, &out_len, to, RSA_size(rsa), from, flen, padding)) {
+    return -1;
+  }
+
+  if (out_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return out_len;
+}
+
+unsigned RSA_size(const RSA *rsa) {
+  if (rsa->meth->size) {
+    return rsa->meth->size(rsa);
+  }
+
+  return rsa_default_size(rsa);
+}
+
+int RSA_is_opaque(const RSA *rsa) {
+  return rsa->meth && (rsa->meth->flags & RSA_FLAG_OPAQUE);
+}
+
+int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(g_rsa_ex_data_class_bss_get(), &index, argl,
+                               argp, free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int RSA_set_ex_data(RSA *rsa, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&rsa->ex_data, idx, arg);
+}
+
+void *RSA_get_ex_data(const RSA *rsa, int idx) {
+  return CRYPTO_get_ex_data(&rsa->ex_data, idx);
+}
+
+// SSL_SIG_LENGTH is the size of an SSL/TLS (prior to TLS 1.2) signature: it's
+// the length of an MD5 and SHA1 hash.
+static const unsigned SSL_SIG_LENGTH = 36;
+
+// pkcs1_sig_prefix contains the ASN.1, DER encoded prefix for a hash that is
+// to be signed with PKCS#1.
+struct pkcs1_sig_prefix {
+  // nid identifies the hash function.
+  int nid;
+  // hash_len is the expected length of the hash function.
+  uint8_t hash_len;
+  // len is the number of bytes of |bytes| which are valid.
+  uint8_t len;
+  // bytes contains the DER bytes.
+  uint8_t bytes[19];
+};
+
+// kPKCS1SigPrefixes contains the ASN.1 prefixes for PKCS#1 signatures with
+// different hash functions.
+static const struct pkcs1_sig_prefix kPKCS1SigPrefixes[] = {
+    {
+     NID_md5,
+     MD5_DIGEST_LENGTH,
+     18,
+     {0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+      0x02, 0x05, 0x05, 0x00, 0x04, 0x10},
+    },
+    {
+     NID_sha1,
+     SHA_DIGEST_LENGTH,
+     15,
+     {0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05,
+      0x00, 0x04, 0x14},
+    },
+    {
+     NID_sha224,
+     SHA224_DIGEST_LENGTH,
+     19,
+     {0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c},
+    },
+    {
+     NID_sha256,
+     SHA256_DIGEST_LENGTH,
+     19,
+     {0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20},
+    },
+    {
+     NID_sha384,
+     SHA384_DIGEST_LENGTH,
+     19,
+     {0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30},
+    },
+    {
+     NID_sha512,
+     SHA512_DIGEST_LENGTH,
+     19,
+     {0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
+      0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40},
+    },
+    {
+     NID_undef, 0, 0, {0},
+    },
+};
+
+int RSA_add_pkcs1_prefix(uint8_t **out_msg, size_t *out_msg_len,
+                         int *is_alloced, int hash_nid, const uint8_t *msg,
+                         size_t msg_len) {
+  unsigned i;
+
+  if (hash_nid == NID_md5_sha1) {
+    // Special case: SSL signature, just check the length.
+    if (msg_len != SSL_SIG_LENGTH) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+      return 0;
+    }
+
+    *out_msg = (uint8_t*) msg;
+    *out_msg_len = SSL_SIG_LENGTH;
+    *is_alloced = 0;
+    return 1;
+  }
+
+  for (i = 0; kPKCS1SigPrefixes[i].nid != NID_undef; i++) {
+    const struct pkcs1_sig_prefix *sig_prefix = &kPKCS1SigPrefixes[i];
+    if (sig_prefix->nid != hash_nid) {
+      continue;
+    }
+
+    if (msg_len != sig_prefix->hash_len) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+      return 0;
+    }
+
+    const uint8_t* prefix = sig_prefix->bytes;
+    unsigned prefix_len = sig_prefix->len;
+    unsigned signed_msg_len;
+    uint8_t *signed_msg;
+
+    signed_msg_len = prefix_len + msg_len;
+    if (signed_msg_len < prefix_len) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_TOO_LONG);
+      return 0;
+    }
+
+    signed_msg = OPENSSL_malloc(signed_msg_len);
+    if (!signed_msg) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+
+    OPENSSL_memcpy(signed_msg, prefix, prefix_len);
+    OPENSSL_memcpy(signed_msg + prefix_len, msg, msg_len);
+
+    *out_msg = signed_msg;
+    *out_msg_len = signed_msg_len;
+    *is_alloced = 1;
+
+    return 1;
+  }
+
+  OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_ALGORITHM_TYPE);
+  return 0;
+}
+
+int RSA_sign(int hash_nid, const uint8_t *in, unsigned in_len, uint8_t *out,
+             unsigned *out_len, RSA *rsa) {
+  const unsigned rsa_size = RSA_size(rsa);
+  int ret = 0;
+  uint8_t *signed_msg = NULL;
+  size_t signed_msg_len = 0;
+  int signed_msg_is_alloced = 0;
+  size_t size_t_out_len;
+
+  if (rsa->meth->sign) {
+    return rsa->meth->sign(hash_nid, in, in_len, out, out_len, rsa);
+  }
+
+  if (!RSA_add_pkcs1_prefix(&signed_msg, &signed_msg_len,
+                            &signed_msg_is_alloced, hash_nid, in, in_len) ||
+      !RSA_sign_raw(rsa, &size_t_out_len, out, rsa_size, signed_msg,
+                    signed_msg_len, RSA_PKCS1_PADDING)) {
+    goto err;
+  }
+
+  *out_len = size_t_out_len;
+  ret = 1;
+
+err:
+  if (signed_msg_is_alloced) {
+    OPENSSL_free(signed_msg);
+  }
+  return ret;
+}
+
+int RSA_sign_pss_mgf1(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                      const uint8_t *in, size_t in_len, const EVP_MD *md,
+                      const EVP_MD *mgf1_md, int salt_len) {
+  if (in_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  size_t padded_len = RSA_size(rsa);
+  uint8_t *padded = OPENSSL_malloc(padded_len);
+  if (padded == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret =
+      RSA_padding_add_PKCS1_PSS_mgf1(rsa, padded, in, md, mgf1_md, salt_len) &&
+      RSA_sign_raw(rsa, out_len, out, max_out, padded, padded_len,
+                   RSA_NO_PADDING);
+  OPENSSL_free(padded);
+  return ret;
+}
+
+int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len,
+               const uint8_t *sig, size_t sig_len, RSA *rsa) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const size_t rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int ret = 0;
+  uint8_t *signed_msg = NULL;
+  size_t signed_msg_len = 0, len;
+  int signed_msg_is_alloced = 0;
+
+  if (hash_nid == NID_md5_sha1 && msg_len != SSL_SIG_LENGTH) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  buf = OPENSSL_malloc(rsa_size);
+  if (!buf) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!RSA_verify_raw(rsa, &len, buf, rsa_size, sig, sig_len,
+                      RSA_PKCS1_PADDING)) {
+    goto out;
+  }
+
+  if (!RSA_add_pkcs1_prefix(&signed_msg, &signed_msg_len,
+                            &signed_msg_is_alloced, hash_nid, msg, msg_len)) {
+    goto out;
+  }
+
+  // Check that no other information follows the hash value (FIPS 186-4 Section
+  // 5.5) and it matches the expected hash.
+  if (len != signed_msg_len || OPENSSL_memcmp(buf, signed_msg, len) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_SIGNATURE);
+    goto out;
+  }
+
+  ret = 1;
+
+out:
+  OPENSSL_free(buf);
+  if (signed_msg_is_alloced) {
+    OPENSSL_free(signed_msg);
+  }
+  return ret;
+}
+
+int RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg, size_t msg_len,
+                        const EVP_MD *md, const EVP_MD *mgf1_md, int salt_len,
+                        const uint8_t *sig, size_t sig_len) {
+  if (msg_len != EVP_MD_size(md)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INVALID_MESSAGE_LENGTH);
+    return 0;
+  }
+
+  size_t em_len = RSA_size(rsa);
+  uint8_t *em = OPENSSL_malloc(em_len);
+  if (em == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  int ret = 0;
+  if (!RSA_verify_raw(rsa, &em_len, em, em_len, sig, sig_len, RSA_NO_PADDING)) {
+    goto err;
+  }
+
+  if (em_len != RSA_size(rsa)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = RSA_verify_PKCS1_PSS_mgf1(rsa, msg, md, mgf1_md, em, salt_len);
+
+err:
+  OPENSSL_free(em);
+  return ret;
+}
+
+static int check_mod_inverse(int *out_ok, const BIGNUM *a, const BIGNUM *ainv,
+                             const BIGNUM *m, int check_reduced, BN_CTX *ctx) {
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  int ret = tmp != NULL &&
+            bn_mul_consttime(tmp, a, ainv, ctx) &&
+            bn_div_consttime(NULL, tmp, tmp, m, ctx);
+  if (ret) {
+    *out_ok = BN_is_one(tmp);
+    if (check_reduced && (BN_is_negative(ainv) || BN_cmp(ainv, m) >= 0)) {
+      *out_ok = 0;
+    }
+  }
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+int RSA_check_key(const RSA *key) {
+  BIGNUM n, pm1, qm1, lcm, dmp1, dmq1, iqmp_times_q;
+  BN_CTX *ctx;
+  int ok = 0, has_crt_values;
+
+  if (RSA_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    return 1;
+  }
+
+  if ((key->p != NULL) != (key->q != NULL)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ONLY_ONE_OF_P_Q_GIVEN);
+    return 0;
+  }
+
+  if (!key->n || !key->e) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  if (!key->d || !key->p) {
+    // For a public key, or without p and q, there's nothing that can be
+    // checked.
+    return 1;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  BN_init(&n);
+  BN_init(&pm1);
+  BN_init(&qm1);
+  BN_init(&lcm);
+  BN_init(&dmp1);
+  BN_init(&dmq1);
+  BN_init(&iqmp_times_q);
+
+  int d_ok;
+  if (!bn_mul_consttime(&n, key->p, key->q, ctx) ||
+      // lcm = lcm(p, q)
+      !bn_usub_consttime(&pm1, key->p, BN_value_one()) ||
+      !bn_usub_consttime(&qm1, key->q, BN_value_one()) ||
+      !bn_lcm_consttime(&lcm, &pm1, &qm1, ctx) ||
+      // Other implementations use the Euler totient rather than the Carmichael
+      // totient, so allow unreduced |key->d|.
+      !check_mod_inverse(&d_ok, key->e, key->d, &lcm,
+                         0 /* don't require reduced */, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+    goto out;
+  }
+
+  if (BN_cmp(&n, key->n) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_N_NOT_EQUAL_P_Q);
+    goto out;
+  }
+
+  if (!d_ok) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_D_E_NOT_CONGRUENT_TO_1);
+    goto out;
+  }
+
+  if (BN_is_negative(key->d) || BN_cmp(key->d, key->n) >= 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_D_OUT_OF_RANGE);
+    goto out;
+  }
+
+  has_crt_values = key->dmp1 != NULL;
+  if (has_crt_values != (key->dmq1 != NULL) ||
+      has_crt_values != (key->iqmp != NULL)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INCONSISTENT_SET_OF_CRT_VALUES);
+    goto out;
+  }
+
+  if (has_crt_values) {
+    int dmp1_ok, dmq1_ok, iqmp_ok;
+    if (!check_mod_inverse(&dmp1_ok, key->e, key->dmp1, &pm1,
+                           1 /* check reduced */, ctx) ||
+        !check_mod_inverse(&dmq1_ok, key->e, key->dmq1, &qm1,
+                           1 /* check reduced */, ctx) ||
+        !check_mod_inverse(&iqmp_ok, key->q, key->iqmp, key->p,
+                           1 /* check reduced */, ctx)) {
+      OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+      goto out;
+    }
+
+    if (!dmp1_ok || !dmq1_ok || !iqmp_ok) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_CRT_VALUES_INCORRECT);
+      goto out;
+    }
+  }
+
+  ok = 1;
+
+out:
+  BN_free(&n);
+  BN_free(&pm1);
+  BN_free(&qm1);
+  BN_free(&lcm);
+  BN_free(&dmp1);
+  BN_free(&dmq1);
+  BN_free(&iqmp_times_q);
+  BN_CTX_free(ctx);
+
+  return ok;
+}
+
+
+// This is the product of the 132 smallest odd primes, from 3 to 751.
+static const BN_ULONG kSmallFactorsLimbs[] = {
+    TOBN(0xc4309333, 0x3ef4e3e1), TOBN(0x71161eb6, 0xcd2d655f),
+    TOBN(0x95e2238c, 0x0bf94862), TOBN(0x3eb233d3, 0x24f7912b),
+    TOBN(0x6b55514b, 0xbf26c483), TOBN(0x0a84d817, 0x5a144871),
+    TOBN(0x77d12fee, 0x9b82210a), TOBN(0xdb5b93c2, 0x97f050b3),
+    TOBN(0x4acad6b9, 0x4d6c026b), TOBN(0xeb7751f3, 0x54aec893),
+    TOBN(0xdba53368, 0x36bc85c4), TOBN(0xd85a1b28, 0x7f5ec78e),
+    TOBN(0x2eb072d8, 0x6b322244), TOBN(0xbba51112, 0x5e2b3aea),
+    TOBN(0x36ed1a6c, 0x0e2486bf), TOBN(0x5f270460, 0xec0c5727),
+    0x000017b1
+};
+
+DEFINE_LOCAL_DATA(BIGNUM, g_small_factors) {
+  out->d = (BN_ULONG *) kSmallFactorsLimbs;
+  out->width = OPENSSL_ARRAY_SIZE(kSmallFactorsLimbs);
+  out->dmax = out->width;
+  out->neg = 0;
+  out->flags = BN_FLG_STATIC_DATA;
+}
+
+int RSA_check_fips(RSA *key) {
+  if (RSA_is_opaque(key)) {
+    // Opaque keys can't be checked.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PUBLIC_KEY_VALIDATION_FAILED);
+    return 0;
+  }
+
+  if (!RSA_check_key(key)) {
+    return 0;
+  }
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  BIGNUM small_gcd;
+  BN_init(&small_gcd);
+
+  int ret = 1;
+
+  // Perform partial public key validation of RSA keys (SP 800-89 5.3.3).
+  // Although this is not for primality testing, SP 800-89 cites an RSA
+  // primality testing algorithm, so we use |BN_prime_checks_for_generation| to
+  // match. This is only a plausibility test and we expect the value to be
+  // composite, so too few iterations will cause us to reject the key, not use
+  // an implausible one.
+  enum bn_primality_result_t primality_result;
+  if (BN_num_bits(key->e) <= 16 ||
+      BN_num_bits(key->e) > 256 ||
+      !BN_is_odd(key->n) ||
+      !BN_is_odd(key->e) ||
+      !BN_gcd(&small_gcd, key->n, g_small_factors(), ctx) ||
+      !BN_is_one(&small_gcd) ||
+      !BN_enhanced_miller_rabin_primality_test(&primality_result, key->n,
+                                               BN_prime_checks_for_generation,
+                                               ctx, NULL) ||
+      primality_result != bn_non_prime_power_composite) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PUBLIC_KEY_VALIDATION_FAILED);
+    ret = 0;
+  }
+
+  BN_free(&small_gcd);
+  BN_CTX_free(ctx);
+
+  if (!ret || key->d == NULL || key->p == NULL) {
+    // On a failure or on only a public key, there's nothing else can be
+    // checked.
+    return ret;
+  }
+
+  // FIPS pairwise consistency test (FIPS 140-2 4.9.2). Per FIPS 140-2 IG,
+  // section 9.9, it is not known whether |rsa| will be used for signing or
+  // encryption, so either pair-wise consistency self-test is acceptable. We
+  // perform a signing test.
+  uint8_t data[32] = {0};
+  unsigned sig_len = RSA_size(key);
+  uint8_t *sig = OPENSSL_malloc(sig_len);
+  if (sig == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!RSA_sign(NID_sha256, data, sizeof(data), sig, &sig_len, key)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    ret = 0;
+    goto cleanup;
+  }
+#if defined(BORINGSSL_FIPS_BREAK_RSA_PWCT)
+  data[0] = ~data[0];
+#endif
+  if (!RSA_verify(NID_sha256, data, sizeof(data), sig, sig_len, key)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    ret = 0;
+  }
+
+cleanup:
+  OPENSSL_free(sig);
+
+  return ret;
+}
+
+int RSA_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                          size_t len) {
+  if (rsa->meth->private_transform) {
+    return rsa->meth->private_transform(rsa, out, in, len);
+  }
+
+  return rsa_default_private_transform(rsa, out, in, len);
+}
+
+int RSA_flags(const RSA *rsa) { return rsa->flags; }
+
+int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) {
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c
new file mode 100644
index 0000000..e8ec84b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c	
@@ -0,0 +1,1344 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+#include "../delocate.h"
+
+
+static int check_modulus_and_exponent_sizes(const RSA *rsa) {
+  unsigned rsa_bits = BN_num_bits(rsa->n);
+
+  if (rsa_bits > 16 * 1024) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+
+  // Mitigate DoS attacks by limiting the exponent size. 33 bits was chosen as
+  // the limit based on the recommendations in [1] and [2]. Windows CryptoAPI
+  // doesn't support values larger than 32 bits [3], so it is unlikely that
+  // exponents larger than 32 bits are being used for anything Windows commonly
+  // does.
+  //
+  // [1] https://www.imperialviolet.org/2012/03/16/rsae.html
+  // [2] https://www.imperialviolet.org/2012/03/17/rsados.html
+  // [3] https://msdn.microsoft.com/en-us/library/aa387685(VS.85).aspx
+  static const unsigned kMaxExponentBits = 33;
+
+  if (BN_num_bits(rsa->e) > kMaxExponentBits) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_E_VALUE);
+    return 0;
+  }
+
+  // Verify |n > e|. Comparing |rsa_bits| to |kMaxExponentBits| is a small
+  // shortcut to comparing |n| and |e| directly. In reality, |kMaxExponentBits|
+  // is much smaller than the minimum RSA key size that any application should
+  // accept.
+  if (rsa_bits <= kMaxExponentBits) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+  assert(BN_ucmp(rsa->n, rsa->e) > 0);
+
+  return 1;
+}
+
+static int ensure_fixed_copy(BIGNUM **out, const BIGNUM *in, int width) {
+  if (*out != NULL) {
+    return 1;
+  }
+  BIGNUM *copy = BN_dup(in);
+  if (copy == NULL ||
+      !bn_resize_words(copy, width)) {
+    BN_free(copy);
+    return 0;
+  }
+  *out = copy;
+  CONSTTIME_SECRET(copy->d, sizeof(BN_ULONG) * width);
+
+  return 1;
+}
+
+// freeze_private_key finishes initializing |rsa|'s private key components.
+// After this function has returned, |rsa| may not be changed. This is needed
+// because |RSA| is a public struct and, additionally, OpenSSL 1.1.0 opaquified
+// it wrong (see https://github.com/openssl/openssl/issues/5158).
+static int freeze_private_key(RSA *rsa, BN_CTX *ctx) {
+  CRYPTO_MUTEX_lock_read(&rsa->lock);
+  int frozen = rsa->private_key_frozen;
+  CRYPTO_MUTEX_unlock_read(&rsa->lock);
+  if (frozen) {
+    return 1;
+  }
+
+  int ret = 0;
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+  if (rsa->private_key_frozen) {
+    ret = 1;
+    goto err;
+  }
+
+  // Pre-compute various intermediate values, as well as copies of private
+  // exponents with correct widths. Note that other threads may concurrently
+  // read from |rsa->n|, |rsa->e|, etc., so any fixes must be in separate
+  // copies. We use |mont_n->N|, |mont_p->N|, and |mont_q->N| as copies of |n|,
+  // |p|, and |q| with the correct minimal widths.
+
+  if (rsa->mont_n == NULL) {
+    rsa->mont_n = BN_MONT_CTX_new_for_modulus(rsa->n, ctx);
+    if (rsa->mont_n == NULL) {
+      goto err;
+    }
+  }
+  const BIGNUM *n_fixed = &rsa->mont_n->N;
+
+  // The only public upper-bound of |rsa->d| is the bit length of |rsa->n|. The
+  // ASN.1 serialization of RSA private keys unfortunately leaks the byte length
+  // of |rsa->d|, but normalize it so we only leak it once, rather than per
+  // operation.
+  if (rsa->d != NULL &&
+      !ensure_fixed_copy(&rsa->d_fixed, rsa->d, n_fixed->width)) {
+    goto err;
+  }
+
+  if (rsa->p != NULL && rsa->q != NULL) {
+    // TODO: p and q are also CONSTTIME_SECRET but not yet marked as such
+    // because the Montgomery code does things like test whether or not values
+    // are zero. So the secret marking probably needs to happen inside that
+    // code.
+
+    if (rsa->mont_p == NULL) {
+      rsa->mont_p = BN_MONT_CTX_new_consttime(rsa->p, ctx);
+      if (rsa->mont_p == NULL) {
+        goto err;
+      }
+    }
+    const BIGNUM *p_fixed = &rsa->mont_p->N;
+
+    if (rsa->mont_q == NULL) {
+      rsa->mont_q = BN_MONT_CTX_new_consttime(rsa->q, ctx);
+      if (rsa->mont_q == NULL) {
+        goto err;
+      }
+    }
+    const BIGNUM *q_fixed = &rsa->mont_q->N;
+
+    if (rsa->dmp1 != NULL && rsa->dmq1 != NULL) {
+      // Key generation relies on this function to compute |iqmp|.
+      if (rsa->iqmp == NULL) {
+        BIGNUM *iqmp = BN_new();
+        if (iqmp == NULL ||
+            !bn_mod_inverse_secret_prime(iqmp, rsa->q, rsa->p, ctx,
+                                         rsa->mont_p)) {
+          BN_free(iqmp);
+          goto err;
+        }
+        rsa->iqmp = iqmp;
+      }
+
+      // CRT components are only publicly bounded by their corresponding
+      // moduli's bit lengths. |rsa->iqmp| is unused outside of this one-time
+      // setup, so we do not compute a fixed-width version of it.
+      if (!ensure_fixed_copy(&rsa->dmp1_fixed, rsa->dmp1, p_fixed->width) ||
+          !ensure_fixed_copy(&rsa->dmq1_fixed, rsa->dmq1, q_fixed->width)) {
+        goto err;
+      }
+
+      // Compute |inv_small_mod_large_mont|. Note that it is always modulo the
+      // larger prime, independent of what is stored in |rsa->iqmp|.
+      if (rsa->inv_small_mod_large_mont == NULL) {
+        BIGNUM *inv_small_mod_large_mont = BN_new();
+        int ok;
+        if (BN_cmp(rsa->p, rsa->q) < 0) {
+          ok = inv_small_mod_large_mont != NULL &&
+               bn_mod_inverse_secret_prime(inv_small_mod_large_mont, rsa->p,
+                                           rsa->q, ctx, rsa->mont_q) &&
+               BN_to_montgomery(inv_small_mod_large_mont,
+                                inv_small_mod_large_mont, rsa->mont_q, ctx);
+        } else {
+          ok = inv_small_mod_large_mont != NULL &&
+               BN_to_montgomery(inv_small_mod_large_mont, rsa->iqmp,
+                                rsa->mont_p, ctx);
+        }
+        if (!ok) {
+          BN_free(inv_small_mod_large_mont);
+          goto err;
+        }
+        rsa->inv_small_mod_large_mont = inv_small_mod_large_mont;
+        CONSTTIME_SECRET(
+            rsa->inv_small_mod_large_mont->d,
+            sizeof(BN_ULONG) * rsa->inv_small_mod_large_mont->width);
+      }
+    }
+  }
+
+  rsa->private_key_frozen = 1;
+  ret = 1;
+
+err:
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+  return ret;
+}
+
+size_t rsa_default_size(const RSA *rsa) {
+  return BN_num_bytes(rsa->n);
+}
+
+int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const unsigned rsa_size = RSA_size(rsa);
+  BIGNUM *f, *result;
+  uint8_t *buf = NULL;
+  BN_CTX *ctx = NULL;
+  int i, ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!check_modulus_and_exponent_sizes(rsa)) {
+    return 0;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+  buf = OPENSSL_malloc(rsa_size);
+  if (!f || !result || !buf) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      i = RSA_padding_add_PKCS1_type_2(buf, rsa_size, in, in_len);
+      break;
+    case RSA_PKCS1_OAEP_PADDING:
+      // Use the default parameters: SHA-1 for both hashes and no label.
+      i = RSA_padding_add_PKCS1_OAEP_mgf1(buf, rsa_size, in, in_len,
+                                          NULL, 0, NULL, NULL);
+      break;
+    case RSA_NO_PADDING:
+      i = RSA_padding_add_none(buf, rsa_size, in, in_len);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (i <= 0) {
+    goto err;
+  }
+
+  if (BN_bin2bn(buf, rsa_size, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    // usually the padding functions would catch this
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&rsa->mont_n, &rsa->lock, rsa->n, ctx) ||
+      !BN_mod_exp_mont(result, f, rsa->e, &rsa->mont_n->N, ctx, rsa->mont_n)) {
+    goto err;
+  }
+
+  // put in leading 0 bytes if the number is less than the length of the
+  // modulus
+  if (!BN_bn2bin_padded(out, rsa_size, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  *out_len = rsa_size;
+  ret = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  OPENSSL_free(buf);
+
+  return ret;
+}
+
+// MAX_BLINDINGS_PER_RSA defines the maximum number of cached BN_BLINDINGs per
+// RSA*. Then this limit is exceeded, BN_BLINDING objects will be created and
+// destroyed as needed.
+#if defined(OPNESSL_TSAN)
+// Smaller under TSAN so that the edge case can be hit with fewer threads.
+#define MAX_BLINDINGS_PER_RSA 2
+#else
+#define MAX_BLINDINGS_PER_RSA 1024
+#endif
+
+// rsa_blinding_get returns a BN_BLINDING to use with |rsa|. It does this by
+// allocating one of the cached BN_BLINDING objects in |rsa->blindings|. If
+// none are free, the cache will be extended by a extra element and the new
+// BN_BLINDING is returned.
+//
+// On success, the index of the assigned BN_BLINDING is written to
+// |*index_used| and must be passed to |rsa_blinding_release| when finished.
+static BN_BLINDING *rsa_blinding_get(RSA *rsa, unsigned *index_used,
+                                     BN_CTX *ctx) {
+  assert(ctx != NULL);
+  assert(rsa->mont_n != NULL);
+
+  BN_BLINDING *ret = NULL;
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+
+  uint8_t *const free_inuse_flag =
+      OPENSSL_memchr(rsa->blindings_inuse, 0, rsa->num_blindings);
+  if (free_inuse_flag != NULL) {
+    *free_inuse_flag = 1;
+    *index_used = free_inuse_flag - rsa->blindings_inuse;
+    ret = rsa->blindings[*index_used];
+    goto out;
+  }
+
+  if (rsa->num_blindings >= MAX_BLINDINGS_PER_RSA) {
+    // No |BN_BLINDING| is free and nor can the cache be extended. This index
+    // value is magic and indicates to |rsa_blinding_release| that a
+    // |BN_BLINDING| was not inserted into the array.
+    *index_used = MAX_BLINDINGS_PER_RSA;
+    ret = BN_BLINDING_new();
+    goto out;
+  }
+
+  // Double the length of the cache.
+  OPENSSL_STATIC_ASSERT(MAX_BLINDINGS_PER_RSA < UINT_MAX / 2,
+                        "MAX_BLINDINGS_PER_RSA too large");
+  unsigned new_num_blindings = rsa->num_blindings * 2;
+  if (new_num_blindings == 0) {
+    new_num_blindings = 1;
+  }
+  if (new_num_blindings > MAX_BLINDINGS_PER_RSA) {
+    new_num_blindings = MAX_BLINDINGS_PER_RSA;
+  }
+  assert(new_num_blindings > rsa->num_blindings);
+
+  OPENSSL_STATIC_ASSERT(
+      MAX_BLINDINGS_PER_RSA < UINT_MAX / sizeof(BN_BLINDING *),
+      "MAX_BLINDINGS_PER_RSA too large");
+  BN_BLINDING **new_blindings =
+      OPENSSL_malloc(sizeof(BN_BLINDING *) * new_num_blindings);
+  uint8_t *new_blindings_inuse = OPENSSL_malloc(new_num_blindings);
+  if (new_blindings == NULL || new_blindings_inuse == NULL) {
+    goto err;
+  }
+
+  OPENSSL_memcpy(new_blindings, rsa->blindings,
+                 sizeof(BN_BLINDING *) * rsa->num_blindings);
+  OPENSSL_memcpy(new_blindings_inuse, rsa->blindings_inuse, rsa->num_blindings);
+
+  for (unsigned i = rsa->num_blindings; i < new_num_blindings; i++) {
+    new_blindings[i] = BN_BLINDING_new();
+    if (new_blindings[i] == NULL) {
+      for (unsigned j = rsa->num_blindings; j < i; j++) {
+        BN_BLINDING_free(new_blindings[j]);
+      }
+      goto err;
+    }
+  }
+  memset(&new_blindings_inuse[rsa->num_blindings], 0,
+         new_num_blindings - rsa->num_blindings);
+
+  new_blindings_inuse[rsa->num_blindings] = 1;
+  *index_used = rsa->num_blindings;
+  assert(*index_used != MAX_BLINDINGS_PER_RSA);
+  ret = new_blindings[rsa->num_blindings];
+
+  OPENSSL_free(rsa->blindings);
+  rsa->blindings = new_blindings;
+  OPENSSL_free(rsa->blindings_inuse);
+  rsa->blindings_inuse = new_blindings_inuse;
+  rsa->num_blindings = new_num_blindings;
+
+  goto out;
+
+err:
+  OPENSSL_free(new_blindings_inuse);
+  OPENSSL_free(new_blindings);
+
+out:
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+  return ret;
+}
+
+// rsa_blinding_release marks the cached BN_BLINDING at the given index as free
+// for other threads to use.
+static void rsa_blinding_release(RSA *rsa, BN_BLINDING *blinding,
+                                 unsigned blinding_index) {
+  if (blinding_index == MAX_BLINDINGS_PER_RSA) {
+    // This blinding wasn't cached.
+    BN_BLINDING_free(blinding);
+    return;
+  }
+
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+  rsa->blindings_inuse[blinding_index] = 0;
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+}
+
+// signing
+int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                         size_t max_out, const uint8_t *in, size_t in_len,
+                         int padding) {
+  const unsigned rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int i, ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  buf = OPENSSL_malloc(rsa_size);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      i = RSA_padding_add_PKCS1_type_1(buf, rsa_size, in, in_len);
+      break;
+    case RSA_NO_PADDING:
+      i = RSA_padding_add_none(buf, rsa_size, in, in_len);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (i <= 0) {
+    goto err;
+  }
+
+  if (!RSA_private_transform(rsa, out, buf, rsa_size)) {
+    goto err;
+  }
+
+  CONSTTIME_DECLASSIFY(out, rsa_size);
+  *out_len = rsa_size;
+  ret = 1;
+
+err:
+  OPENSSL_free(buf);
+
+  return ret;
+}
+
+int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                        const uint8_t *in, size_t in_len, int padding) {
+  const unsigned rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    buf = out;
+  } else {
+    // Allocate a temporary buffer to hold the padded plaintext.
+    buf = OPENSSL_malloc(rsa_size);
+    if (buf == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+  }
+
+  if (in_len != rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
+    goto err;
+  }
+
+  if (!RSA_private_transform(rsa, buf, in, rsa_size)) {
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      ret =
+          RSA_padding_check_PKCS1_type_2(out, out_len, rsa_size, buf, rsa_size);
+      break;
+    case RSA_PKCS1_OAEP_PADDING:
+      // Use the default parameters: SHA-1 for both hashes and no label.
+      ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, out_len, rsa_size, buf,
+                                              rsa_size, NULL, 0, NULL, NULL);
+      break;
+    case RSA_NO_PADDING:
+      *out_len = rsa_size;
+      ret = 1;
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  CONSTTIME_DECLASSIFY(&ret, sizeof(ret));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
+  } else {
+    CONSTTIME_DECLASSIFY(out, *out_len);
+  }
+
+err:
+  if (padding != RSA_NO_PADDING) {
+    OPENSSL_free(buf);
+  }
+
+  return ret;
+}
+
+static int mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
+
+int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                   const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const unsigned rsa_size = RSA_size(rsa);
+  BIGNUM *f, *result;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (in_len != rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
+    return 0;
+  }
+
+  if (!check_modulus_and_exponent_sizes(rsa)) {
+    return 0;
+  }
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  int ret = 0;
+  uint8_t *buf = NULL;
+
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+  if (f == NULL || result == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    buf = out;
+  } else {
+    // Allocate a temporary buffer to hold the padded plaintext.
+    buf = OPENSSL_malloc(rsa_size);
+    if (buf == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+  }
+
+  if (BN_bin2bn(in, in_len, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&rsa->mont_n, &rsa->lock, rsa->n, ctx) ||
+      !BN_mod_exp_mont(result, f, rsa->e, &rsa->mont_n->N, ctx, rsa->mont_n)) {
+    goto err;
+  }
+
+  if (!BN_bn2bin_padded(buf, rsa_size, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      ret =
+          RSA_padding_check_PKCS1_type_1(out, out_len, rsa_size, buf, rsa_size);
+      break;
+    case RSA_NO_PADDING:
+      ret = 1;
+      *out_len = rsa_size;
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
+    goto err;
+  }
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(ctx);
+  if (buf != out) {
+    OPENSSL_free(buf);
+  }
+  return ret;
+}
+
+int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                                  size_t len) {
+  if (rsa->n == NULL || rsa->d == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  BIGNUM *f, *result;
+  BN_CTX *ctx = NULL;
+  unsigned blinding_index = 0;
+  BN_BLINDING *blinding = NULL;
+  int ret = 0;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+
+  if (f == NULL || result == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (BN_bin2bn(in, len, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    // Usually the padding functions would catch this.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!freeze_private_key(rsa, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  const int do_blinding = (rsa->flags & RSA_FLAG_NO_BLINDING) == 0;
+
+  if (rsa->e == NULL && do_blinding) {
+    // We cannot do blinding or verification without |e|, and continuing without
+    // those countermeasures is dangerous. However, the Java/Android RSA API
+    // requires support for keys where only |d| and |n| (and not |e|) are known.
+    // The callers that require that bad behavior set |RSA_FLAG_NO_BLINDING|.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_NO_PUBLIC_EXPONENT);
+    goto err;
+  }
+
+  if (do_blinding) {
+    blinding = rsa_blinding_get(rsa, &blinding_index, ctx);
+    if (blinding == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+      goto err;
+    }
+    if (!BN_BLINDING_convert(f, blinding, rsa->e, rsa->mont_n, ctx)) {
+      goto err;
+    }
+  }
+
+  if (rsa->p != NULL && rsa->q != NULL && rsa->e != NULL && rsa->dmp1 != NULL &&
+      rsa->dmq1 != NULL && rsa->iqmp != NULL &&
+      // Require that we can reduce |f| by |rsa->p| and |rsa->q| in constant
+      // time, which requires primes be the same size, rounded to the Montgomery
+      // coefficient. (See |mod_montgomery|.) This is not required by RFC 8017,
+      // but it is true for keys generated by us and all common implementations.
+      bn_less_than_montgomery_R(rsa->q, rsa->mont_p) &&
+      bn_less_than_montgomery_R(rsa->p, rsa->mont_q)) {
+    if (!mod_exp(result, f, rsa, ctx)) {
+      goto err;
+    }
+  } else if (!BN_mod_exp_mont_consttime(result, f, rsa->d_fixed, rsa->n, ctx,
+                                        rsa->mont_n)) {
+    goto err;
+  }
+
+  // Verify the result to protect against fault attacks as described in the
+  // 1997 paper "On the Importance of Checking Cryptographic Protocols for
+  // Faults" by Dan Boneh, Richard A. DeMillo, and Richard J. Lipton. Some
+  // implementations do this only when the CRT is used, but we do it in all
+  // cases. Section 6 of the aforementioned paper describes an attack that
+  // works when the CRT isn't used. That attack is much less likely to succeed
+  // than the CRT attack, but there have likely been improvements since 1997.
+  //
+  // This check is cheap assuming |e| is small; it almost always is.
+  if (rsa->e != NULL) {
+    BIGNUM *vrfy = BN_CTX_get(ctx);
+    if (vrfy == NULL ||
+        !BN_mod_exp_mont(vrfy, result, rsa->e, rsa->n, ctx, rsa->mont_n) ||
+        !BN_equal_consttime(vrfy, f)) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+      goto err;
+    }
+
+  }
+
+  if (do_blinding &&
+      !BN_BLINDING_invert(result, blinding, rsa->mont_n, ctx)) {
+    goto err;
+  }
+
+  // The computation should have left |result| as a maximally-wide number, so
+  // that it and serializing does not leak information about the magnitude of
+  // the result.
+  //
+  // See Falko Strenzke, "Manger's Attack revisited", ICICS 2010.
+  assert(result->width == rsa->mont_n->N.width);
+  if (!BN_bn2bin_padded(out, len, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  if (blinding != NULL) {
+    rsa_blinding_release(rsa, blinding, blinding_index);
+  }
+
+  return ret;
+}
+
+// mod_montgomery sets |r| to |I| mod |p|. |I| must already be fully reduced
+// modulo |p| times |q|. It returns one on success and zero on error.
+static int mod_montgomery(BIGNUM *r, const BIGNUM *I, const BIGNUM *p,
+                          const BN_MONT_CTX *mont_p, const BIGNUM *q,
+                          BN_CTX *ctx) {
+  // Reducing in constant-time with Montgomery reduction requires I <= p * R. We
+  // have I < p * q, so this follows if q < R. The caller should have checked
+  // this already.
+  if (!bn_less_than_montgomery_R(q, mont_p)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  if (// Reduce mod p with Montgomery reduction. This computes I * R^-1 mod p.
+      !BN_from_montgomery(r, I, mont_p, ctx) ||
+      // Multiply by R^2 and do another Montgomery reduction to compute
+      // I * R^-1 * R^2 * R^-1 = I mod p.
+      !BN_to_montgomery(r, r, mont_p, ctx)) {
+    return 0;
+  }
+
+  // By precomputing R^3 mod p (normally |BN_MONT_CTX| only uses R^2 mod p) and
+  // adjusting the API for |BN_mod_exp_mont_consttime|, we could instead compute
+  // I * R mod p here and save a reduction per prime. But this would require
+  // changing the RSAZ code and may not be worth it. Note that the RSAZ code
+  // uses a different radix, so it uses R' = 2^1044. There we'd actually want
+  // R^2 * R', and would futher benefit from a precomputed R'^2. It currently
+  // converts |mont_p->RR| to R'^2.
+  return 1;
+}
+
+static int mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) {
+  assert(ctx != NULL);
+
+  assert(rsa->n != NULL);
+  assert(rsa->e != NULL);
+  assert(rsa->d != NULL);
+  assert(rsa->p != NULL);
+  assert(rsa->q != NULL);
+  assert(rsa->dmp1 != NULL);
+  assert(rsa->dmq1 != NULL);
+  assert(rsa->iqmp != NULL);
+
+  BIGNUM *r1, *m1;
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  r1 = BN_CTX_get(ctx);
+  m1 = BN_CTX_get(ctx);
+  if (r1 == NULL ||
+      m1 == NULL) {
+    goto err;
+  }
+
+  if (!freeze_private_key(rsa, ctx)) {
+    goto err;
+  }
+
+  // Implementing RSA with CRT in constant-time is sensitive to which prime is
+  // larger. Canonicalize fields so that |p| is the larger prime.
+  const BIGNUM *dmp1 = rsa->dmp1_fixed, *dmq1 = rsa->dmq1_fixed;
+  const BN_MONT_CTX *mont_p = rsa->mont_p, *mont_q = rsa->mont_q;
+  if (BN_cmp(rsa->p, rsa->q) < 0) {
+    mont_p = rsa->mont_q;
+    mont_q = rsa->mont_p;
+    dmp1 = rsa->dmq1_fixed;
+    dmq1 = rsa->dmp1_fixed;
+  }
+
+  // Use the minimal-width versions of |n|, |p|, and |q|. Either works, but if
+  // someone gives us non-minimal values, these will be slightly more efficient
+  // on the non-Montgomery operations.
+  const BIGNUM *n = &rsa->mont_n->N;
+  const BIGNUM *p = &mont_p->N;
+  const BIGNUM *q = &mont_q->N;
+
+  // This is a pre-condition for |mod_montgomery|. It was already checked by the
+  // caller.
+  assert(BN_ucmp(I, n) < 0);
+
+  if (// |m1| is the result modulo |q|.
+      !mod_montgomery(r1, I, q, mont_q, p, ctx) ||
+      !BN_mod_exp_mont_consttime(m1, r1, dmq1, q, ctx, mont_q) ||
+      // |r0| is the result modulo |p|.
+      !mod_montgomery(r1, I, p, mont_p, q, ctx) ||
+      !BN_mod_exp_mont_consttime(r0, r1, dmp1, p, ctx, mont_p) ||
+      // Compute r0 = r0 - m1 mod p. |p| is the larger prime, so |m1| is already
+      // fully reduced mod |p|.
+      !bn_mod_sub_consttime(r0, r0, m1, p, ctx) ||
+      // r0 = r0 * iqmp mod p. We use Montgomery multiplication to compute this
+      // in constant time. |inv_small_mod_large_mont| is in Montgomery form and
+      // r0 is not, so the result is taken out of Montgomery form.
+      !BN_mod_mul_montgomery(r0, r0, rsa->inv_small_mod_large_mont, mont_p,
+                             ctx) ||
+      // r0 = r0 * q + m1 gives the final result. Reducing modulo q gives m1, so
+      // it is correct mod p. Reducing modulo p gives (r0-m1)*iqmp*q + m1 = r0,
+      // so it is correct mod q. Finally, the result is bounded by [m1, n + m1),
+      // and the result is at least |m1|, so this must be the unique answer in
+      // [0, n).
+      !bn_mul_consttime(r0, r0, q, ctx) ||
+      !bn_uadd_consttime(r0, r0, m1) ||
+      // The result should be bounded by |n|, but fixed-width operations may
+      // bound the width slightly higher, so fix it.
+      !bn_resize_words(r0, n->width)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int ensure_bignum(BIGNUM **out) {
+  if (*out == NULL) {
+    *out = BN_new();
+  }
+  return *out != NULL;
+}
+
+// kBoringSSLRSASqrtTwo is the BIGNUM representation of ⌊2¹⁵³⁵×√2⌋. This is
+// chosen to give enough precision for 3072-bit RSA, the largest key size FIPS
+// specifies. Key sizes beyond this will round up.
+//
+// To verify this number, check that n² < 2³⁰⁷¹ < (n+1)², where n is value
+// represented here. Note the components are listed in little-endian order. Here
+// is some sample Python code to check:
+//
+//   >>> TOBN = lambda a, b: a << 32 | b
+//   >>> l = [ <paste the contents of kSqrtTwo> ]
+//   >>> n = sum(a * 2**(64*i) for i, a in enumerate(l))
+//   >>> n**2 < 2**3071 < (n+1)**2
+//   True
+const BN_ULONG kBoringSSLRSASqrtTwo[] = {
+    TOBN(0xdea06241, 0xf7aa81c2), TOBN(0xf6a1be3f, 0xca221307),
+    TOBN(0x332a5e9f, 0x7bda1ebf), TOBN(0x0104dc01, 0xfe32352f),
+    TOBN(0xb8cf341b, 0x6f8236c7), TOBN(0x4264dabc, 0xd528b651),
+    TOBN(0xf4d3a02c, 0xebc93e0c), TOBN(0x81394ab6, 0xd8fd0efd),
+    TOBN(0xeaa4a089, 0x9040ca4a), TOBN(0xf52f120f, 0x836e582e),
+    TOBN(0xcb2a6343, 0x31f3c84d), TOBN(0xc6d5a8a3, 0x8bb7e9dc),
+    TOBN(0x460abc72, 0x2f7c4e33), TOBN(0xcab1bc91, 0x1688458a),
+    TOBN(0x53059c60, 0x11bc337b), TOBN(0xd2202e87, 0x42af1f4e),
+    TOBN(0x78048736, 0x3dfa2768), TOBN(0x0f74a85e, 0x439c7b4a),
+    TOBN(0xa8b1fe6f, 0xdc83db39), TOBN(0x4afc8304, 0x3ab8a2c3),
+    TOBN(0xed17ac85, 0x83339915), TOBN(0x1d6f60ba, 0x893ba84c),
+    TOBN(0x597d89b3, 0x754abe9f), TOBN(0xb504f333, 0xf9de6484),
+};
+const size_t kBoringSSLRSASqrtTwoLen = OPENSSL_ARRAY_SIZE(kBoringSSLRSASqrtTwo);
+
+// generate_prime sets |out| to a prime with length |bits| such that |out|-1 is
+// relatively prime to |e|. If |p| is non-NULL, |out| will also not be close to
+// |p|. |sqrt2| must be ⌊2^(bits-1)×√2⌋ (or a slightly overestimate for large
+// sizes), and |pow2_bits_100| must be 2^(bits-100).
+//
+// This function fails with probability around 2^-21.
+static int generate_prime(BIGNUM *out, int bits, const BIGNUM *e,
+                          const BIGNUM *p, const BIGNUM *sqrt2,
+                          const BIGNUM *pow2_bits_100, BN_CTX *ctx,
+                          BN_GENCB *cb) {
+  if (bits < 128 || (bits % BN_BITS2) != 0) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  assert(BN_is_pow2(pow2_bits_100));
+  assert(BN_is_bit_set(pow2_bits_100, bits - 100));
+
+  // See FIPS 186-4 appendix B.3.3, steps 4 and 5. Note |bits| here is nlen/2.
+
+  // Use the limit from steps 4.7 and 5.8 for most values of |e|. When |e| is 3,
+  // the 186-4 limit is too low, so we use a higher one. Note this case is not
+  // reachable from |RSA_generate_key_fips|.
+  //
+  // |limit| determines the failure probability. We must find a prime that is
+  // not 1 mod |e|. By the prime number theorem, we'll find one with probability
+  // p = (e-1)/e * 2/(ln(2)*bits). Note the second term is doubled because we
+  // discard even numbers.
+  //
+  // The failure probability is thus (1-p)^limit. To convert that to a power of
+  // two, we take logs. -log_2((1-p)^limit) = -limit * ln(1-p) / ln(2).
+  //
+  // >>> def f(bits, e, limit):
+  // ...   p = (e-1.0)/e * 2.0/(math.log(2)*bits)
+  // ...   return -limit * math.log(1 - p) / math.log(2)
+  // ...
+  // >>> f(1024, 65537, 5*1024)
+  // 20.842750558272634
+  // >>> f(1536, 65537, 5*1536)
+  // 20.83294549602474
+  // >>> f(2048, 65537, 5*2048)
+  // 20.828047576234948
+  // >>> f(1024, 3, 8*1024)
+  // 22.222147925962307
+  // >>> f(1536, 3, 8*1536)
+  // 22.21518251065506
+  // >>> f(2048, 3, 8*2048)
+  // 22.211701985875937
+  if (bits >= INT_MAX/32) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+  int limit = BN_is_word(e, 3) ? bits * 8 : bits * 5;
+
+  int ret = 0, tries = 0, rand_tries = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  for (;;) {
+    // Generate a random number of length |bits| where the bottom bit is set
+    // (steps 4.2, 4.3, 5.2 and 5.3) and the top bit is set (implied by the
+    // bound checked below in steps 4.4 and 5.5).
+    if (!BN_rand(out, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD) ||
+        !BN_GENCB_call(cb, BN_GENCB_GENERATED, rand_tries++)) {
+      goto err;
+    }
+
+    if (p != NULL) {
+      // If |p| and |out| are too close, try again (step 5.4).
+      if (!bn_abs_sub_consttime(tmp, out, p, ctx)) {
+        goto err;
+      }
+      if (BN_cmp(tmp, pow2_bits_100) <= 0) {
+        continue;
+      }
+    }
+
+    // If out < 2^(bits-1)×√2, try again (steps 4.4 and 5.5). This is equivalent
+    // to out <= ⌊2^(bits-1)×√2⌋, or out <= sqrt2 for FIPS key sizes.
+    //
+    // For larger keys, the comparison is approximate, leaning towards
+    // retrying. That is, we reject a negligible fraction of primes that are
+    // within the FIPS bound, but we will never accept a prime outside the
+    // bound, ensuring the resulting RSA key is the right size.
+    if (BN_cmp(out, sqrt2) <= 0) {
+      continue;
+    }
+
+    // RSA key generation's bottleneck is discarding composites. If it fails
+    // trial division, do not bother computing a GCD or performing Miller-Rabin.
+    if (!bn_odd_number_is_obviously_composite(out)) {
+      // Check gcd(out-1, e) is one (steps 4.5 and 5.6).
+      int relatively_prime;
+      if (!BN_sub(tmp, out, BN_value_one()) ||
+          !bn_is_relatively_prime(&relatively_prime, tmp, e, ctx)) {
+        goto err;
+      }
+      if (relatively_prime) {
+        // Test |out| for primality (steps 4.5.1 and 5.6.1).
+        int is_probable_prime;
+        if (!BN_primality_test(&is_probable_prime, out,
+                               BN_prime_checks_for_generation, ctx, 0, cb)) {
+          goto err;
+        }
+        if (is_probable_prime) {
+          ret = 1;
+          goto err;
+        }
+      }
+    }
+
+    // If we've tried too many times to find a prime, abort (steps 4.7 and
+    // 5.8).
+    tries++;
+    if (tries >= limit) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_TOO_MANY_ITERATIONS);
+      goto err;
+    }
+    if (!BN_GENCB_call(cb, 2, tries)) {
+      goto err;
+    }
+  }
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+// rsa_generate_key_impl generates an RSA key using a generalized version of
+// FIPS 186-4 appendix B.3. |RSA_generate_key_fips| performs additional checks
+// for FIPS-compliant key generation.
+//
+// This function returns one on success and zero on failure. It has a failure
+// probability of about 2^-20.
+static int rsa_generate_key_impl(RSA *rsa, int bits, const BIGNUM *e_value,
+                                 BN_GENCB *cb) {
+  // See FIPS 186-4 appendix B.3. This function implements a generalized version
+  // of the FIPS algorithm. |RSA_generate_key_fips| performs additional checks
+  // for FIPS-compliant key generation.
+
+  // Always generate RSA keys which are a multiple of 128 bits. Round |bits|
+  // down as needed.
+  bits &= ~127;
+
+  // Reject excessively small keys.
+  if (bits < 256) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  // Reject excessively large public exponents. Windows CryptoAPI and Go don't
+  // support values larger than 32 bits, so match their limits for generating
+  // keys. (|check_modulus_and_exponent_sizes| uses a slightly more conservative
+  // value, but we don't need to support generating such keys.)
+  // https://github.com/golang/go/issues/3161
+  // https://msdn.microsoft.com/en-us/library/aa387685(VS.85).aspx
+  if (BN_num_bits(e_value) > 32) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_E_VALUE);
+    return 0;
+  }
+
+  int ret = 0;
+  int prime_bits = bits / 2;
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto bn_err;
+  }
+  BN_CTX_start(ctx);
+  BIGNUM *totient = BN_CTX_get(ctx);
+  BIGNUM *pm1 = BN_CTX_get(ctx);
+  BIGNUM *qm1 = BN_CTX_get(ctx);
+  BIGNUM *sqrt2 = BN_CTX_get(ctx);
+  BIGNUM *pow2_prime_bits_100 = BN_CTX_get(ctx);
+  BIGNUM *pow2_prime_bits = BN_CTX_get(ctx);
+  if (totient == NULL || pm1 == NULL || qm1 == NULL || sqrt2 == NULL ||
+      pow2_prime_bits_100 == NULL || pow2_prime_bits == NULL ||
+      !BN_set_bit(pow2_prime_bits_100, prime_bits - 100) ||
+      !BN_set_bit(pow2_prime_bits, prime_bits)) {
+    goto bn_err;
+  }
+
+  // We need the RSA components non-NULL.
+  if (!ensure_bignum(&rsa->n) ||
+      !ensure_bignum(&rsa->d) ||
+      !ensure_bignum(&rsa->e) ||
+      !ensure_bignum(&rsa->p) ||
+      !ensure_bignum(&rsa->q) ||
+      !ensure_bignum(&rsa->dmp1) ||
+      !ensure_bignum(&rsa->dmq1)) {
+    goto bn_err;
+  }
+
+  if (!BN_copy(rsa->e, e_value)) {
+    goto bn_err;
+  }
+
+  // Compute sqrt2 >= ⌊2^(prime_bits-1)×√2⌋.
+  if (!bn_set_words(sqrt2, kBoringSSLRSASqrtTwo, kBoringSSLRSASqrtTwoLen)) {
+    goto bn_err;
+  }
+  int sqrt2_bits = kBoringSSLRSASqrtTwoLen * BN_BITS2;
+  assert(sqrt2_bits == (int)BN_num_bits(sqrt2));
+  if (sqrt2_bits > prime_bits) {
+    // For key sizes up to 3072 (prime_bits = 1536), this is exactly
+    // ⌊2^(prime_bits-1)×√2⌋.
+    if (!BN_rshift(sqrt2, sqrt2, sqrt2_bits - prime_bits)) {
+      goto bn_err;
+    }
+  } else if (prime_bits > sqrt2_bits) {
+    // For key sizes beyond 3072, this is approximate. We err towards retrying
+    // to ensure our key is the right size and round up.
+    if (!BN_add_word(sqrt2, 1) ||
+        !BN_lshift(sqrt2, sqrt2, prime_bits - sqrt2_bits)) {
+      goto bn_err;
+    }
+  }
+  assert(prime_bits == (int)BN_num_bits(sqrt2));
+
+  do {
+    // Generate p and q, each of size |prime_bits|, using the steps outlined in
+    // appendix FIPS 186-4 appendix B.3.3.
+    //
+    // Each call to |generate_prime| fails with probability p = 2^-21. The
+    // probability that either call fails is 1 - (1-p)^2, which is around 2^-20.
+    if (!generate_prime(rsa->p, prime_bits, rsa->e, NULL, sqrt2,
+                        pow2_prime_bits_100, ctx, cb) ||
+        !BN_GENCB_call(cb, 3, 0) ||
+        !generate_prime(rsa->q, prime_bits, rsa->e, rsa->p, sqrt2,
+                        pow2_prime_bits_100, ctx, cb) ||
+        !BN_GENCB_call(cb, 3, 1)) {
+      goto bn_err;
+    }
+
+    if (BN_cmp(rsa->p, rsa->q) < 0) {
+      BIGNUM *tmp = rsa->p;
+      rsa->p = rsa->q;
+      rsa->q = tmp;
+    }
+
+    // Calculate d = e^(-1) (mod lcm(p-1, q-1)), per FIPS 186-4. This differs
+    // from typical RSA implementations which use (p-1)*(q-1).
+    //
+    // Note this means the size of d might reveal information about p-1 and
+    // q-1. However, we do operations with Chinese Remainder Theorem, so we only
+    // use d (mod p-1) and d (mod q-1) as exponents. Using a minimal totient
+    // does not affect those two values.
+    int no_inverse;
+    if (!bn_usub_consttime(pm1, rsa->p, BN_value_one()) ||
+        !bn_usub_consttime(qm1, rsa->q, BN_value_one()) ||
+        !bn_lcm_consttime(totient, pm1, qm1, ctx) ||
+        !bn_mod_inverse_consttime(rsa->d, &no_inverse, rsa->e, totient, ctx)) {
+      goto bn_err;
+    }
+
+    // Retry if |rsa->d| <= 2^|prime_bits|. See appendix B.3.1's guidance on
+    // values for d.
+  } while (BN_cmp(rsa->d, pow2_prime_bits) <= 0);
+
+  if (// Calculate n.
+      !bn_mul_consttime(rsa->n, rsa->p, rsa->q, ctx) ||
+      // Calculate d mod (p-1).
+      !bn_div_consttime(NULL, rsa->dmp1, rsa->d, pm1, ctx) ||
+      // Calculate d mod (q-1)
+      !bn_div_consttime(NULL, rsa->dmq1, rsa->d, qm1, ctx)) {
+    goto bn_err;
+  }
+  bn_set_minimal_width(rsa->n);
+
+  // Sanity-check that |rsa->n| has the specified size. This is implied by
+  // |generate_prime|'s bounds.
+  if (BN_num_bits(rsa->n) != (unsigned)bits) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  // Call |freeze_private_key| to compute the inverse of q mod p, by way of
+  // |rsa->mont_p|.
+  if (!freeze_private_key(rsa, ctx)) {
+    goto bn_err;
+  }
+
+  // The key generation process is complex and thus error-prone. It could be
+  // disastrous to generate and then use a bad key so double-check that the key
+  // makes sense.
+  if (!RSA_check_key(rsa)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = 1;
+
+bn_err:
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+  }
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ret;
+}
+
+static void replace_bignum(BIGNUM **out, BIGNUM **in) {
+  BN_free(*out);
+  *out = *in;
+  *in = NULL;
+}
+
+static void replace_bn_mont_ctx(BN_MONT_CTX **out, BN_MONT_CTX **in) {
+  BN_MONT_CTX_free(*out);
+  *out = *in;
+  *in = NULL;
+}
+
+int RSA_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e_value,
+                        BN_GENCB *cb) {
+  // |rsa_generate_key_impl|'s 2^-20 failure probability is too high at scale,
+  // so we run the FIPS algorithm four times, bringing it down to 2^-80. We
+  // should just adjust the retry limit, but FIPS 186-4 prescribes that value
+  // and thus results in unnecessary complexity.
+  for (int i = 0; i < 4; i++) {
+    ERR_clear_error();
+    // Generate into scratch space, to avoid leaving partial work on failure.
+    RSA *tmp = RSA_new();
+    if (tmp == NULL) {
+      return 0;
+    }
+    if (rsa_generate_key_impl(tmp, bits, e_value, cb)) {
+      replace_bignum(&rsa->n, &tmp->n);
+      replace_bignum(&rsa->e, &tmp->e);
+      replace_bignum(&rsa->d, &tmp->d);
+      replace_bignum(&rsa->p, &tmp->p);
+      replace_bignum(&rsa->q, &tmp->q);
+      replace_bignum(&rsa->dmp1, &tmp->dmp1);
+      replace_bignum(&rsa->dmq1, &tmp->dmq1);
+      replace_bignum(&rsa->iqmp, &tmp->iqmp);
+      replace_bn_mont_ctx(&rsa->mont_n, &tmp->mont_n);
+      replace_bn_mont_ctx(&rsa->mont_p, &tmp->mont_p);
+      replace_bn_mont_ctx(&rsa->mont_q, &tmp->mont_q);
+      replace_bignum(&rsa->d_fixed, &tmp->d_fixed);
+      replace_bignum(&rsa->dmp1_fixed, &tmp->dmp1_fixed);
+      replace_bignum(&rsa->dmq1_fixed, &tmp->dmq1_fixed);
+      replace_bignum(&rsa->inv_small_mod_large_mont,
+                     &tmp->inv_small_mod_large_mont);
+      rsa->private_key_frozen = tmp->private_key_frozen;
+      RSA_free(tmp);
+      return 1;
+    }
+    uint32_t err = ERR_peek_error();
+    RSA_free(tmp);
+    tmp = NULL;
+    // Only retry on |RSA_R_TOO_MANY_ITERATIONS|. This is so a caller-induced
+    // failure in |BN_GENCB_call| is still fatal.
+    if (ERR_GET_LIB(err) != ERR_LIB_RSA ||
+        ERR_GET_REASON(err) != RSA_R_TOO_MANY_ITERATIONS) {
+      return 0;
+    }
+  }
+
+  return 0;
+}
+
+int RSA_generate_key_fips(RSA *rsa, int bits, BN_GENCB *cb) {
+  // FIPS 186-4 allows 2048-bit and 3072-bit RSA keys (1024-bit and 1536-bit
+  // primes, respectively) with the prime generation method we use.
+  if (bits != 2048 && bits != 3072) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    return 0;
+  }
+
+  BIGNUM *e = BN_new();
+  int ret = e != NULL &&
+            BN_set_word(e, RSA_F4) &&
+            RSA_generate_key_ex(rsa, bits, e, cb) &&
+            RSA_check_fips(rsa);
+  BN_free(e);
+  return ret;
+}
+
+DEFINE_METHOD_FUNCTION(RSA_METHOD, RSA_default_method) {
+  // All of the methods are NULL to make it easier for the compiler/linker to
+  // drop unused functions. The wrapper functions will select the appropriate
+  // |rsa_default_*| implementation.
+  OPENSSL_memset(out, 0, sizeof(RSA_METHOD));
+  out->common.is_static = 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c.grpc_back
new file mode 100644
index 0000000..94fb75c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/rsa/rsa_impl.c.grpc_back	
@@ -0,0 +1,1344 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../bn/internal.h"
+#include "../../internal.h"
+#include "../delocate.h"
+
+
+static int check_modulus_and_exponent_sizes(const RSA *rsa) {
+  unsigned rsa_bits = BN_num_bits(rsa->n);
+
+  if (rsa_bits > 16 * 1024) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+
+  // Mitigate DoS attacks by limiting the exponent size. 33 bits was chosen as
+  // the limit based on the recommendations in [1] and [2]. Windows CryptoAPI
+  // doesn't support values larger than 32 bits [3], so it is unlikely that
+  // exponents larger than 32 bits are being used for anything Windows commonly
+  // does.
+  //
+  // [1] https://www.imperialviolet.org/2012/03/16/rsae.html
+  // [2] https://www.imperialviolet.org/2012/03/17/rsados.html
+  // [3] https://msdn.microsoft.com/en-us/library/aa387685(VS.85).aspx
+  static const unsigned kMaxExponentBits = 33;
+
+  if (BN_num_bits(rsa->e) > kMaxExponentBits) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_E_VALUE);
+    return 0;
+  }
+
+  // Verify |n > e|. Comparing |rsa_bits| to |kMaxExponentBits| is a small
+  // shortcut to comparing |n| and |e| directly. In reality, |kMaxExponentBits|
+  // is much smaller than the minimum RSA key size that any application should
+  // accept.
+  if (rsa_bits <= kMaxExponentBits) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+  assert(BN_ucmp(rsa->n, rsa->e) > 0);
+
+  return 1;
+}
+
+static int ensure_fixed_copy(BIGNUM **out, const BIGNUM *in, int width) {
+  if (*out != NULL) {
+    return 1;
+  }
+  BIGNUM *copy = BN_dup(in);
+  if (copy == NULL ||
+      !bn_resize_words(copy, width)) {
+    BN_free(copy);
+    return 0;
+  }
+  *out = copy;
+  CONSTTIME_SECRET(copy->d, sizeof(BN_ULONG) * width);
+
+  return 1;
+}
+
+// freeze_private_key finishes initializing |rsa|'s private key components.
+// After this function has returned, |rsa| may not be changed. This is needed
+// because |RSA| is a public struct and, additionally, OpenSSL 1.1.0 opaquified
+// it wrong (see https://github.com/openssl/openssl/issues/5158).
+static int freeze_private_key(RSA *rsa, BN_CTX *ctx) {
+  CRYPTO_MUTEX_lock_read(&rsa->lock);
+  int frozen = rsa->private_key_frozen;
+  CRYPTO_MUTEX_unlock_read(&rsa->lock);
+  if (frozen) {
+    return 1;
+  }
+
+  int ret = 0;
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+  if (rsa->private_key_frozen) {
+    ret = 1;
+    goto err;
+  }
+
+  // Pre-compute various intermediate values, as well as copies of private
+  // exponents with correct widths. Note that other threads may concurrently
+  // read from |rsa->n|, |rsa->e|, etc., so any fixes must be in separate
+  // copies. We use |mont_n->N|, |mont_p->N|, and |mont_q->N| as copies of |n|,
+  // |p|, and |q| with the correct minimal widths.
+
+  if (rsa->mont_n == NULL) {
+    rsa->mont_n = BN_MONT_CTX_new_for_modulus(rsa->n, ctx);
+    if (rsa->mont_n == NULL) {
+      goto err;
+    }
+  }
+  const BIGNUM *n_fixed = &rsa->mont_n->N;
+
+  // The only public upper-bound of |rsa->d| is the bit length of |rsa->n|. The
+  // ASN.1 serialization of RSA private keys unfortunately leaks the byte length
+  // of |rsa->d|, but normalize it so we only leak it once, rather than per
+  // operation.
+  if (rsa->d != NULL &&
+      !ensure_fixed_copy(&rsa->d_fixed, rsa->d, n_fixed->width)) {
+    goto err;
+  }
+
+  if (rsa->p != NULL && rsa->q != NULL) {
+    // TODO: p and q are also CONSTTIME_SECRET but not yet marked as such
+    // because the Montgomery code does things like test whether or not values
+    // are zero. So the secret marking probably needs to happen inside that
+    // code.
+
+    if (rsa->mont_p == NULL) {
+      rsa->mont_p = BN_MONT_CTX_new_consttime(rsa->p, ctx);
+      if (rsa->mont_p == NULL) {
+        goto err;
+      }
+    }
+    const BIGNUM *p_fixed = &rsa->mont_p->N;
+
+    if (rsa->mont_q == NULL) {
+      rsa->mont_q = BN_MONT_CTX_new_consttime(rsa->q, ctx);
+      if (rsa->mont_q == NULL) {
+        goto err;
+      }
+    }
+    const BIGNUM *q_fixed = &rsa->mont_q->N;
+
+    if (rsa->dmp1 != NULL && rsa->dmq1 != NULL) {
+      // Key generation relies on this function to compute |iqmp|.
+      if (rsa->iqmp == NULL) {
+        BIGNUM *iqmp = BN_new();
+        if (iqmp == NULL ||
+            !bn_mod_inverse_secret_prime(iqmp, rsa->q, rsa->p, ctx,
+                                         rsa->mont_p)) {
+          BN_free(iqmp);
+          goto err;
+        }
+        rsa->iqmp = iqmp;
+      }
+
+      // CRT components are only publicly bounded by their corresponding
+      // moduli's bit lengths. |rsa->iqmp| is unused outside of this one-time
+      // setup, so we do not compute a fixed-width version of it.
+      if (!ensure_fixed_copy(&rsa->dmp1_fixed, rsa->dmp1, p_fixed->width) ||
+          !ensure_fixed_copy(&rsa->dmq1_fixed, rsa->dmq1, q_fixed->width)) {
+        goto err;
+      }
+
+      // Compute |inv_small_mod_large_mont|. Note that it is always modulo the
+      // larger prime, independent of what is stored in |rsa->iqmp|.
+      if (rsa->inv_small_mod_large_mont == NULL) {
+        BIGNUM *inv_small_mod_large_mont = BN_new();
+        int ok;
+        if (BN_cmp(rsa->p, rsa->q) < 0) {
+          ok = inv_small_mod_large_mont != NULL &&
+               bn_mod_inverse_secret_prime(inv_small_mod_large_mont, rsa->p,
+                                           rsa->q, ctx, rsa->mont_q) &&
+               BN_to_montgomery(inv_small_mod_large_mont,
+                                inv_small_mod_large_mont, rsa->mont_q, ctx);
+        } else {
+          ok = inv_small_mod_large_mont != NULL &&
+               BN_to_montgomery(inv_small_mod_large_mont, rsa->iqmp,
+                                rsa->mont_p, ctx);
+        }
+        if (!ok) {
+          BN_free(inv_small_mod_large_mont);
+          goto err;
+        }
+        rsa->inv_small_mod_large_mont = inv_small_mod_large_mont;
+        CONSTTIME_SECRET(
+            rsa->inv_small_mod_large_mont->d,
+            sizeof(BN_ULONG) * rsa->inv_small_mod_large_mont->width);
+      }
+    }
+  }
+
+  rsa->private_key_frozen = 1;
+  ret = 1;
+
+err:
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+  return ret;
+}
+
+size_t rsa_default_size(const RSA *rsa) {
+  return BN_num_bytes(rsa->n);
+}
+
+int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const unsigned rsa_size = RSA_size(rsa);
+  BIGNUM *f, *result;
+  uint8_t *buf = NULL;
+  BN_CTX *ctx = NULL;
+  int i, ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (!check_modulus_and_exponent_sizes(rsa)) {
+    return 0;
+  }
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+  buf = OPENSSL_malloc(rsa_size);
+  if (!f || !result || !buf) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      i = RSA_padding_add_PKCS1_type_2(buf, rsa_size, in, in_len);
+      break;
+    case RSA_PKCS1_OAEP_PADDING:
+      // Use the default parameters: SHA-1 for both hashes and no label.
+      i = RSA_padding_add_PKCS1_OAEP_mgf1(buf, rsa_size, in, in_len,
+                                          NULL, 0, NULL, NULL);
+      break;
+    case RSA_NO_PADDING:
+      i = RSA_padding_add_none(buf, rsa_size, in, in_len);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (i <= 0) {
+    goto err;
+  }
+
+  if (BN_bin2bn(buf, rsa_size, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    // usually the padding functions would catch this
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&rsa->mont_n, &rsa->lock, rsa->n, ctx) ||
+      !BN_mod_exp_mont(result, f, rsa->e, &rsa->mont_n->N, ctx, rsa->mont_n)) {
+    goto err;
+  }
+
+  // put in leading 0 bytes if the number is less than the length of the
+  // modulus
+  if (!BN_bn2bin_padded(out, rsa_size, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  *out_len = rsa_size;
+  ret = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  OPENSSL_free(buf);
+
+  return ret;
+}
+
+// MAX_BLINDINGS_PER_RSA defines the maximum number of cached BN_BLINDINGs per
+// RSA*. Then this limit is exceeded, BN_BLINDING objects will be created and
+// destroyed as needed.
+#if defined(OPNESSL_TSAN)
+// Smaller under TSAN so that the edge case can be hit with fewer threads.
+#define MAX_BLINDINGS_PER_RSA 2
+#else
+#define MAX_BLINDINGS_PER_RSA 1024
+#endif
+
+// rsa_blinding_get returns a BN_BLINDING to use with |rsa|. It does this by
+// allocating one of the cached BN_BLINDING objects in |rsa->blindings|. If
+// none are free, the cache will be extended by a extra element and the new
+// BN_BLINDING is returned.
+//
+// On success, the index of the assigned BN_BLINDING is written to
+// |*index_used| and must be passed to |rsa_blinding_release| when finished.
+static BN_BLINDING *rsa_blinding_get(RSA *rsa, unsigned *index_used,
+                                     BN_CTX *ctx) {
+  assert(ctx != NULL);
+  assert(rsa->mont_n != NULL);
+
+  BN_BLINDING *ret = NULL;
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+
+  uint8_t *const free_inuse_flag =
+      OPENSSL_memchr(rsa->blindings_inuse, 0, rsa->num_blindings);
+  if (free_inuse_flag != NULL) {
+    *free_inuse_flag = 1;
+    *index_used = free_inuse_flag - rsa->blindings_inuse;
+    ret = rsa->blindings[*index_used];
+    goto out;
+  }
+
+  if (rsa->num_blindings >= MAX_BLINDINGS_PER_RSA) {
+    // No |BN_BLINDING| is free and nor can the cache be extended. This index
+    // value is magic and indicates to |rsa_blinding_release| that a
+    // |BN_BLINDING| was not inserted into the array.
+    *index_used = MAX_BLINDINGS_PER_RSA;
+    ret = BN_BLINDING_new();
+    goto out;
+  }
+
+  // Double the length of the cache.
+  OPENSSL_STATIC_ASSERT(MAX_BLINDINGS_PER_RSA < UINT_MAX / 2,
+                        "MAX_BLINDINGS_PER_RSA too large");
+  unsigned new_num_blindings = rsa->num_blindings * 2;
+  if (new_num_blindings == 0) {
+    new_num_blindings = 1;
+  }
+  if (new_num_blindings > MAX_BLINDINGS_PER_RSA) {
+    new_num_blindings = MAX_BLINDINGS_PER_RSA;
+  }
+  assert(new_num_blindings > rsa->num_blindings);
+
+  OPENSSL_STATIC_ASSERT(
+      MAX_BLINDINGS_PER_RSA < UINT_MAX / sizeof(BN_BLINDING *),
+      "MAX_BLINDINGS_PER_RSA too large");
+  BN_BLINDING **new_blindings =
+      OPENSSL_malloc(sizeof(BN_BLINDING *) * new_num_blindings);
+  uint8_t *new_blindings_inuse = OPENSSL_malloc(new_num_blindings);
+  if (new_blindings == NULL || new_blindings_inuse == NULL) {
+    goto err;
+  }
+
+  OPENSSL_memcpy(new_blindings, rsa->blindings,
+                 sizeof(BN_BLINDING *) * rsa->num_blindings);
+  OPENSSL_memcpy(new_blindings_inuse, rsa->blindings_inuse, rsa->num_blindings);
+
+  for (unsigned i = rsa->num_blindings; i < new_num_blindings; i++) {
+    new_blindings[i] = BN_BLINDING_new();
+    if (new_blindings[i] == NULL) {
+      for (unsigned j = rsa->num_blindings; j < i; j++) {
+        BN_BLINDING_free(new_blindings[j]);
+      }
+      goto err;
+    }
+  }
+  memset(&new_blindings_inuse[rsa->num_blindings], 0,
+         new_num_blindings - rsa->num_blindings);
+
+  new_blindings_inuse[rsa->num_blindings] = 1;
+  *index_used = rsa->num_blindings;
+  assert(*index_used != MAX_BLINDINGS_PER_RSA);
+  ret = new_blindings[rsa->num_blindings];
+
+  OPENSSL_free(rsa->blindings);
+  rsa->blindings = new_blindings;
+  OPENSSL_free(rsa->blindings_inuse);
+  rsa->blindings_inuse = new_blindings_inuse;
+  rsa->num_blindings = new_num_blindings;
+
+  goto out;
+
+err:
+  OPENSSL_free(new_blindings_inuse);
+  OPENSSL_free(new_blindings);
+
+out:
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+  return ret;
+}
+
+// rsa_blinding_release marks the cached BN_BLINDING at the given index as free
+// for other threads to use.
+static void rsa_blinding_release(RSA *rsa, BN_BLINDING *blinding,
+                                 unsigned blinding_index) {
+  if (blinding_index == MAX_BLINDINGS_PER_RSA) {
+    // This blinding wasn't cached.
+    BN_BLINDING_free(blinding);
+    return;
+  }
+
+  CRYPTO_MUTEX_lock_write(&rsa->lock);
+  rsa->blindings_inuse[blinding_index] = 0;
+  CRYPTO_MUTEX_unlock_write(&rsa->lock);
+}
+
+// signing
+int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                         size_t max_out, const uint8_t *in, size_t in_len,
+                         int padding) {
+  const unsigned rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int i, ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  buf = OPENSSL_malloc(rsa_size);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      i = RSA_padding_add_PKCS1_type_1(buf, rsa_size, in, in_len);
+      break;
+    case RSA_NO_PADDING:
+      i = RSA_padding_add_none(buf, rsa_size, in, in_len);
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (i <= 0) {
+    goto err;
+  }
+
+  if (!RSA_private_transform(rsa, out, buf, rsa_size)) {
+    goto err;
+  }
+
+  CONSTTIME_DECLASSIFY(out, rsa_size);
+  *out_len = rsa_size;
+  ret = 1;
+
+err:
+  OPENSSL_free(buf);
+
+  return ret;
+}
+
+int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                        const uint8_t *in, size_t in_len, int padding) {
+  const unsigned rsa_size = RSA_size(rsa);
+  uint8_t *buf = NULL;
+  int ret = 0;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    buf = out;
+  } else {
+    // Allocate a temporary buffer to hold the padded plaintext.
+    buf = OPENSSL_malloc(rsa_size);
+    if (buf == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+  }
+
+  if (in_len != rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
+    goto err;
+  }
+
+  if (!RSA_private_transform(rsa, buf, in, rsa_size)) {
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      ret =
+          RSA_padding_check_PKCS1_type_2(out, out_len, rsa_size, buf, rsa_size);
+      break;
+    case RSA_PKCS1_OAEP_PADDING:
+      // Use the default parameters: SHA-1 for both hashes and no label.
+      ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, out_len, rsa_size, buf,
+                                              rsa_size, NULL, 0, NULL, NULL);
+      break;
+    case RSA_NO_PADDING:
+      *out_len = rsa_size;
+      ret = 1;
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  CONSTTIME_DECLASSIFY(&ret, sizeof(ret));
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
+  } else {
+    CONSTTIME_DECLASSIFY(out, *out_len);
+  }
+
+err:
+  if (padding != RSA_NO_PADDING) {
+    OPENSSL_free(buf);
+  }
+
+  return ret;
+}
+
+static int mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
+
+int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                   const uint8_t *in, size_t in_len, int padding) {
+  if (rsa->n == NULL || rsa->e == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  const unsigned rsa_size = RSA_size(rsa);
+  BIGNUM *f, *result;
+
+  if (max_out < rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
+    return 0;
+  }
+
+  if (in_len != rsa_size) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
+    return 0;
+  }
+
+  if (!check_modulus_and_exponent_sizes(rsa)) {
+    return 0;
+  }
+
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  int ret = 0;
+  uint8_t *buf = NULL;
+
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+  if (f == NULL || result == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (padding == RSA_NO_PADDING) {
+    buf = out;
+  } else {
+    // Allocate a temporary buffer to hold the padded plaintext.
+    buf = OPENSSL_malloc(rsa_size);
+    if (buf == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+  }
+
+  if (BN_bin2bn(in, in_len, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!BN_MONT_CTX_set_locked(&rsa->mont_n, &rsa->lock, rsa->n, ctx) ||
+      !BN_mod_exp_mont(result, f, rsa->e, &rsa->mont_n->N, ctx, rsa->mont_n)) {
+    goto err;
+  }
+
+  if (!BN_bn2bin_padded(buf, rsa_size, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  switch (padding) {
+    case RSA_PKCS1_PADDING:
+      ret =
+          RSA_padding_check_PKCS1_type_1(out, out_len, rsa_size, buf, rsa_size);
+      break;
+    case RSA_NO_PADDING:
+      ret = 1;
+      *out_len = rsa_size;
+      break;
+    default:
+      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
+      goto err;
+  }
+
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
+    goto err;
+  }
+
+err:
+  BN_CTX_end(ctx);
+  BN_CTX_free(ctx);
+  if (buf != out) {
+    OPENSSL_free(buf);
+  }
+  return ret;
+}
+
+int rsa_default_private_transform(RSA *rsa, uint8_t *out, const uint8_t *in,
+                                  size_t len) {
+  if (rsa->n == NULL || rsa->d == NULL) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+
+  BIGNUM *f, *result;
+  BN_CTX *ctx = NULL;
+  unsigned blinding_index = 0;
+  BN_BLINDING *blinding = NULL;
+  int ret = 0;
+
+  ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto err;
+  }
+  BN_CTX_start(ctx);
+  f = BN_CTX_get(ctx);
+  result = BN_CTX_get(ctx);
+
+  if (f == NULL || result == NULL) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (BN_bin2bn(in, len, f) == NULL) {
+    goto err;
+  }
+
+  if (BN_ucmp(f, rsa->n) >= 0) {
+    // Usually the padding functions would catch this.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_TOO_LARGE_FOR_MODULUS);
+    goto err;
+  }
+
+  if (!freeze_private_key(rsa, ctx)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  const int do_blinding = (rsa->flags & RSA_FLAG_NO_BLINDING) == 0;
+
+  if (rsa->e == NULL && do_blinding) {
+    // We cannot do blinding or verification without |e|, and continuing without
+    // those countermeasures is dangerous. However, the Java/Android RSA API
+    // requires support for keys where only |d| and |n| (and not |e|) are known.
+    // The callers that require that bad behavior set |RSA_FLAG_NO_BLINDING|.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_NO_PUBLIC_EXPONENT);
+    goto err;
+  }
+
+  if (do_blinding) {
+    blinding = rsa_blinding_get(rsa, &blinding_index, ctx);
+    if (blinding == NULL) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+      goto err;
+    }
+    if (!BN_BLINDING_convert(f, blinding, rsa->e, rsa->mont_n, ctx)) {
+      goto err;
+    }
+  }
+
+  if (rsa->p != NULL && rsa->q != NULL && rsa->e != NULL && rsa->dmp1 != NULL &&
+      rsa->dmq1 != NULL && rsa->iqmp != NULL &&
+      // Require that we can reduce |f| by |rsa->p| and |rsa->q| in constant
+      // time, which requires primes be the same size, rounded to the Montgomery
+      // coefficient. (See |mod_montgomery|.) This is not required by RFC 8017,
+      // but it is true for keys generated by us and all common implementations.
+      bn_less_than_montgomery_R(rsa->q, rsa->mont_p) &&
+      bn_less_than_montgomery_R(rsa->p, rsa->mont_q)) {
+    if (!mod_exp(result, f, rsa, ctx)) {
+      goto err;
+    }
+  } else if (!BN_mod_exp_mont_consttime(result, f, rsa->d_fixed, rsa->n, ctx,
+                                        rsa->mont_n)) {
+    goto err;
+  }
+
+  // Verify the result to protect against fault attacks as described in the
+  // 1997 paper "On the Importance of Checking Cryptographic Protocols for
+  // Faults" by Dan Boneh, Richard A. DeMillo, and Richard J. Lipton. Some
+  // implementations do this only when the CRT is used, but we do it in all
+  // cases. Section 6 of the aforementioned paper describes an attack that
+  // works when the CRT isn't used. That attack is much less likely to succeed
+  // than the CRT attack, but there have likely been improvements since 1997.
+  //
+  // This check is cheap assuming |e| is small; it almost always is.
+  if (rsa->e != NULL) {
+    BIGNUM *vrfy = BN_CTX_get(ctx);
+    if (vrfy == NULL ||
+        !BN_mod_exp_mont(vrfy, result, rsa->e, rsa->n, ctx, rsa->mont_n) ||
+        !BN_equal_consttime(vrfy, f)) {
+      OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+      goto err;
+    }
+
+  }
+
+  if (do_blinding &&
+      !BN_BLINDING_invert(result, blinding, rsa->mont_n, ctx)) {
+    goto err;
+  }
+
+  // The computation should have left |result| as a maximally-wide number, so
+  // that it and serializing does not leak information about the magnitude of
+  // the result.
+  //
+  // See Falko Strenzke, "Manger's Attack revisited", ICICS 2010.
+  assert(result->width == rsa->mont_n->N.width);
+  if (!BN_bn2bin_padded(out, len, result)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  if (blinding != NULL) {
+    rsa_blinding_release(rsa, blinding, blinding_index);
+  }
+
+  return ret;
+}
+
+// mod_montgomery sets |r| to |I| mod |p|. |I| must already be fully reduced
+// modulo |p| times |q|. It returns one on success and zero on error.
+static int mod_montgomery(BIGNUM *r, const BIGNUM *I, const BIGNUM *p,
+                          const BN_MONT_CTX *mont_p, const BIGNUM *q,
+                          BN_CTX *ctx) {
+  // Reducing in constant-time with Montgomery reduction requires I <= p * R. We
+  // have I < p * q, so this follows if q < R. The caller should have checked
+  // this already.
+  if (!bn_less_than_montgomery_R(q, mont_p)) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  if (// Reduce mod p with Montgomery reduction. This computes I * R^-1 mod p.
+      !BN_from_montgomery(r, I, mont_p, ctx) ||
+      // Multiply by R^2 and do another Montgomery reduction to compute
+      // I * R^-1 * R^2 * R^-1 = I mod p.
+      !BN_to_montgomery(r, r, mont_p, ctx)) {
+    return 0;
+  }
+
+  // By precomputing R^3 mod p (normally |BN_MONT_CTX| only uses R^2 mod p) and
+  // adjusting the API for |BN_mod_exp_mont_consttime|, we could instead compute
+  // I * R mod p here and save a reduction per prime. But this would require
+  // changing the RSAZ code and may not be worth it. Note that the RSAZ code
+  // uses a different radix, so it uses R' = 2^1044. There we'd actually want
+  // R^2 * R', and would futher benefit from a precomputed R'^2. It currently
+  // converts |mont_p->RR| to R'^2.
+  return 1;
+}
+
+static int mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) {
+  assert(ctx != NULL);
+
+  assert(rsa->n != NULL);
+  assert(rsa->e != NULL);
+  assert(rsa->d != NULL);
+  assert(rsa->p != NULL);
+  assert(rsa->q != NULL);
+  assert(rsa->dmp1 != NULL);
+  assert(rsa->dmq1 != NULL);
+  assert(rsa->iqmp != NULL);
+
+  BIGNUM *r1, *m1;
+  int ret = 0;
+
+  BN_CTX_start(ctx);
+  r1 = BN_CTX_get(ctx);
+  m1 = BN_CTX_get(ctx);
+  if (r1 == NULL ||
+      m1 == NULL) {
+    goto err;
+  }
+
+  if (!freeze_private_key(rsa, ctx)) {
+    goto err;
+  }
+
+  // Implementing RSA with CRT in constant-time is sensitive to which prime is
+  // larger. Canonicalize fields so that |p| is the larger prime.
+  const BIGNUM *dmp1 = rsa->dmp1_fixed, *dmq1 = rsa->dmq1_fixed;
+  const BN_MONT_CTX *mont_p = rsa->mont_p, *mont_q = rsa->mont_q;
+  if (BN_cmp(rsa->p, rsa->q) < 0) {
+    mont_p = rsa->mont_q;
+    mont_q = rsa->mont_p;
+    dmp1 = rsa->dmq1_fixed;
+    dmq1 = rsa->dmp1_fixed;
+  }
+
+  // Use the minimal-width versions of |n|, |p|, and |q|. Either works, but if
+  // someone gives us non-minimal values, these will be slightly more efficient
+  // on the non-Montgomery operations.
+  const BIGNUM *n = &rsa->mont_n->N;
+  const BIGNUM *p = &mont_p->N;
+  const BIGNUM *q = &mont_q->N;
+
+  // This is a pre-condition for |mod_montgomery|. It was already checked by the
+  // caller.
+  assert(BN_ucmp(I, n) < 0);
+
+  if (// |m1| is the result modulo |q|.
+      !mod_montgomery(r1, I, q, mont_q, p, ctx) ||
+      !BN_mod_exp_mont_consttime(m1, r1, dmq1, q, ctx, mont_q) ||
+      // |r0| is the result modulo |p|.
+      !mod_montgomery(r1, I, p, mont_p, q, ctx) ||
+      !BN_mod_exp_mont_consttime(r0, r1, dmp1, p, ctx, mont_p) ||
+      // Compute r0 = r0 - m1 mod p. |p| is the larger prime, so |m1| is already
+      // fully reduced mod |p|.
+      !bn_mod_sub_consttime(r0, r0, m1, p, ctx) ||
+      // r0 = r0 * iqmp mod p. We use Montgomery multiplication to compute this
+      // in constant time. |inv_small_mod_large_mont| is in Montgomery form and
+      // r0 is not, so the result is taken out of Montgomery form.
+      !BN_mod_mul_montgomery(r0, r0, rsa->inv_small_mod_large_mont, mont_p,
+                             ctx) ||
+      // r0 = r0 * q + m1 gives the final result. Reducing modulo q gives m1, so
+      // it is correct mod p. Reducing modulo p gives (r0-m1)*iqmp*q + m1 = r0,
+      // so it is correct mod q. Finally, the result is bounded by [m1, n + m1),
+      // and the result is at least |m1|, so this must be the unique answer in
+      // [0, n).
+      !bn_mul_consttime(r0, r0, q, ctx) ||
+      !bn_uadd_consttime(r0, r0, m1) ||
+      // The result should be bounded by |n|, but fixed-width operations may
+      // bound the width slightly higher, so fix it.
+      !bn_resize_words(r0, n->width)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+static int ensure_bignum(BIGNUM **out) {
+  if (*out == NULL) {
+    *out = BN_new();
+  }
+  return *out != NULL;
+}
+
+// kBoringSSLRSASqrtTwo is the BIGNUM representation of ⌊2¹⁵³⁵×√2⌋. This is
+// chosen to give enough precision for 3072-bit RSA, the largest key size FIPS
+// specifies. Key sizes beyond this will round up.
+//
+// To verify this number, check that n² < 2³⁰⁷¹ < (n+1)², where n is value
+// represented here. Note the components are listed in little-endian order. Here
+// is some sample Python code to check:
+//
+//   >>> TOBN = lambda a, b: a << 32 | b
+//   >>> l = [ <paste the contents of kSqrtTwo> ]
+//   >>> n = sum(a * 2**(64*i) for i, a in enumerate(l))
+//   >>> n**2 < 2**3071 < (n+1)**2
+//   True
+const BN_ULONG kBoringSSLRSASqrtTwo[] = {
+    TOBN(0xdea06241, 0xf7aa81c2), TOBN(0xf6a1be3f, 0xca221307),
+    TOBN(0x332a5e9f, 0x7bda1ebf), TOBN(0x0104dc01, 0xfe32352f),
+    TOBN(0xb8cf341b, 0x6f8236c7), TOBN(0x4264dabc, 0xd528b651),
+    TOBN(0xf4d3a02c, 0xebc93e0c), TOBN(0x81394ab6, 0xd8fd0efd),
+    TOBN(0xeaa4a089, 0x9040ca4a), TOBN(0xf52f120f, 0x836e582e),
+    TOBN(0xcb2a6343, 0x31f3c84d), TOBN(0xc6d5a8a3, 0x8bb7e9dc),
+    TOBN(0x460abc72, 0x2f7c4e33), TOBN(0xcab1bc91, 0x1688458a),
+    TOBN(0x53059c60, 0x11bc337b), TOBN(0xd2202e87, 0x42af1f4e),
+    TOBN(0x78048736, 0x3dfa2768), TOBN(0x0f74a85e, 0x439c7b4a),
+    TOBN(0xa8b1fe6f, 0xdc83db39), TOBN(0x4afc8304, 0x3ab8a2c3),
+    TOBN(0xed17ac85, 0x83339915), TOBN(0x1d6f60ba, 0x893ba84c),
+    TOBN(0x597d89b3, 0x754abe9f), TOBN(0xb504f333, 0xf9de6484),
+};
+const size_t kBoringSSLRSASqrtTwoLen = OPENSSL_ARRAY_SIZE(kBoringSSLRSASqrtTwo);
+
+// generate_prime sets |out| to a prime with length |bits| such that |out|-1 is
+// relatively prime to |e|. If |p| is non-NULL, |out| will also not be close to
+// |p|. |sqrt2| must be ⌊2^(bits-1)×√2⌋ (or a slightly overestimate for large
+// sizes), and |pow2_bits_100| must be 2^(bits-100).
+//
+// This function fails with probability around 2^-21.
+static int generate_prime(BIGNUM *out, int bits, const BIGNUM *e,
+                          const BIGNUM *p, const BIGNUM *sqrt2,
+                          const BIGNUM *pow2_bits_100, BN_CTX *ctx,
+                          BN_GENCB *cb) {
+  if (bits < 128 || (bits % BN_BITS2) != 0) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  assert(BN_is_pow2(pow2_bits_100));
+  assert(BN_is_bit_set(pow2_bits_100, bits - 100));
+
+  // See FIPS 186-4 appendix B.3.3, steps 4 and 5. Note |bits| here is nlen/2.
+
+  // Use the limit from steps 4.7 and 5.8 for most values of |e|. When |e| is 3,
+  // the 186-4 limit is too low, so we use a higher one. Note this case is not
+  // reachable from |RSA_generate_key_fips|.
+  //
+  // |limit| determines the failure probability. We must find a prime that is
+  // not 1 mod |e|. By the prime number theorem, we'll find one with probability
+  // p = (e-1)/e * 2/(ln(2)*bits). Note the second term is doubled because we
+  // discard even numbers.
+  //
+  // The failure probability is thus (1-p)^limit. To convert that to a power of
+  // two, we take logs. -log_2((1-p)^limit) = -limit * ln(1-p) / ln(2).
+  //
+  // >>> def f(bits, e, limit):
+  // ...   p = (e-1.0)/e * 2.0/(math.log(2)*bits)
+  // ...   return -limit * math.log(1 - p) / math.log(2)
+  // ...
+  // >>> f(1024, 65537, 5*1024)
+  // 20.842750558272634
+  // >>> f(1536, 65537, 5*1536)
+  // 20.83294549602474
+  // >>> f(2048, 65537, 5*2048)
+  // 20.828047576234948
+  // >>> f(1024, 3, 8*1024)
+  // 22.222147925962307
+  // >>> f(1536, 3, 8*1536)
+  // 22.21518251065506
+  // >>> f(2048, 3, 8*2048)
+  // 22.211701985875937
+  if (bits >= INT_MAX/32) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_MODULUS_TOO_LARGE);
+    return 0;
+  }
+  int limit = BN_is_word(e, 3) ? bits * 8 : bits * 5;
+
+  int ret = 0, tries = 0, rand_tries = 0;
+  BN_CTX_start(ctx);
+  BIGNUM *tmp = BN_CTX_get(ctx);
+  if (tmp == NULL) {
+    goto err;
+  }
+
+  for (;;) {
+    // Generate a random number of length |bits| where the bottom bit is set
+    // (steps 4.2, 4.3, 5.2 and 5.3) and the top bit is set (implied by the
+    // bound checked below in steps 4.4 and 5.5).
+    if (!BN_rand(out, bits, BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ODD) ||
+        !BN_GENCB_call(cb, BN_GENCB_GENERATED, rand_tries++)) {
+      goto err;
+    }
+
+    if (p != NULL) {
+      // If |p| and |out| are too close, try again (step 5.4).
+      if (!bn_abs_sub_consttime(tmp, out, p, ctx)) {
+        goto err;
+      }
+      if (BN_cmp(tmp, pow2_bits_100) <= 0) {
+        continue;
+      }
+    }
+
+    // If out < 2^(bits-1)×√2, try again (steps 4.4 and 5.5). This is equivalent
+    // to out <= ⌊2^(bits-1)×√2⌋, or out <= sqrt2 for FIPS key sizes.
+    //
+    // For larger keys, the comparison is approximate, leaning towards
+    // retrying. That is, we reject a negligible fraction of primes that are
+    // within the FIPS bound, but we will never accept a prime outside the
+    // bound, ensuring the resulting RSA key is the right size.
+    if (BN_cmp(out, sqrt2) <= 0) {
+      continue;
+    }
+
+    // RSA key generation's bottleneck is discarding composites. If it fails
+    // trial division, do not bother computing a GCD or performing Miller-Rabin.
+    if (!bn_odd_number_is_obviously_composite(out)) {
+      // Check gcd(out-1, e) is one (steps 4.5 and 5.6).
+      int relatively_prime;
+      if (!BN_sub(tmp, out, BN_value_one()) ||
+          !bn_is_relatively_prime(&relatively_prime, tmp, e, ctx)) {
+        goto err;
+      }
+      if (relatively_prime) {
+        // Test |out| for primality (steps 4.5.1 and 5.6.1).
+        int is_probable_prime;
+        if (!BN_primality_test(&is_probable_prime, out,
+                               BN_prime_checks_for_generation, ctx, 0, cb)) {
+          goto err;
+        }
+        if (is_probable_prime) {
+          ret = 1;
+          goto err;
+        }
+      }
+    }
+
+    // If we've tried too many times to find a prime, abort (steps 4.7 and
+    // 5.8).
+    tries++;
+    if (tries >= limit) {
+      OPENSSL_PUT_ERROR(RSA, RSA_R_TOO_MANY_ITERATIONS);
+      goto err;
+    }
+    if (!BN_GENCB_call(cb, 2, tries)) {
+      goto err;
+    }
+  }
+
+err:
+  BN_CTX_end(ctx);
+  return ret;
+}
+
+// rsa_generate_key_impl generates an RSA key using a generalized version of
+// FIPS 186-4 appendix B.3. |RSA_generate_key_fips| performs additional checks
+// for FIPS-compliant key generation.
+//
+// This function returns one on success and zero on failure. It has a failure
+// probability of about 2^-20.
+static int rsa_generate_key_impl(RSA *rsa, int bits, const BIGNUM *e_value,
+                                 BN_GENCB *cb) {
+  // See FIPS 186-4 appendix B.3. This function implements a generalized version
+  // of the FIPS algorithm. |RSA_generate_key_fips| performs additional checks
+  // for FIPS-compliant key generation.
+
+  // Always generate RSA keys which are a multiple of 128 bits. Round |bits|
+  // down as needed.
+  bits &= ~127;
+
+  // Reject excessively small keys.
+  if (bits < 256) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_KEY_SIZE_TOO_SMALL);
+    return 0;
+  }
+
+  // Reject excessively large public exponents. Windows CryptoAPI and Go don't
+  // support values larger than 32 bits, so match their limits for generating
+  // keys. (|check_modulus_and_exponent_sizes| uses a slightly more conservative
+  // value, but we don't need to support generating such keys.)
+  // https://github.com/golang/go/issues/3161
+  // https://msdn.microsoft.com/en-us/library/aa387685(VS.85).aspx
+  if (BN_num_bits(e_value) > 32) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_E_VALUE);
+    return 0;
+  }
+
+  int ret = 0;
+  int prime_bits = bits / 2;
+  BN_CTX *ctx = BN_CTX_new();
+  if (ctx == NULL) {
+    goto bn_err;
+  }
+  BN_CTX_start(ctx);
+  BIGNUM *totient = BN_CTX_get(ctx);
+  BIGNUM *pm1 = BN_CTX_get(ctx);
+  BIGNUM *qm1 = BN_CTX_get(ctx);
+  BIGNUM *sqrt2 = BN_CTX_get(ctx);
+  BIGNUM *pow2_prime_bits_100 = BN_CTX_get(ctx);
+  BIGNUM *pow2_prime_bits = BN_CTX_get(ctx);
+  if (totient == NULL || pm1 == NULL || qm1 == NULL || sqrt2 == NULL ||
+      pow2_prime_bits_100 == NULL || pow2_prime_bits == NULL ||
+      !BN_set_bit(pow2_prime_bits_100, prime_bits - 100) ||
+      !BN_set_bit(pow2_prime_bits, prime_bits)) {
+    goto bn_err;
+  }
+
+  // We need the RSA components non-NULL.
+  if (!ensure_bignum(&rsa->n) ||
+      !ensure_bignum(&rsa->d) ||
+      !ensure_bignum(&rsa->e) ||
+      !ensure_bignum(&rsa->p) ||
+      !ensure_bignum(&rsa->q) ||
+      !ensure_bignum(&rsa->dmp1) ||
+      !ensure_bignum(&rsa->dmq1)) {
+    goto bn_err;
+  }
+
+  if (!BN_copy(rsa->e, e_value)) {
+    goto bn_err;
+  }
+
+  // Compute sqrt2 >= ⌊2^(prime_bits-1)×√2⌋.
+  if (!bn_set_words(sqrt2, kBoringSSLRSASqrtTwo, kBoringSSLRSASqrtTwoLen)) {
+    goto bn_err;
+  }
+  int sqrt2_bits = kBoringSSLRSASqrtTwoLen * BN_BITS2;
+  assert(sqrt2_bits == (int)BN_num_bits(sqrt2));
+  if (sqrt2_bits > prime_bits) {
+    // For key sizes up to 3072 (prime_bits = 1536), this is exactly
+    // ⌊2^(prime_bits-1)×√2⌋.
+    if (!BN_rshift(sqrt2, sqrt2, sqrt2_bits - prime_bits)) {
+      goto bn_err;
+    }
+  } else if (prime_bits > sqrt2_bits) {
+    // For key sizes beyond 3072, this is approximate. We err towards retrying
+    // to ensure our key is the right size and round up.
+    if (!BN_add_word(sqrt2, 1) ||
+        !BN_lshift(sqrt2, sqrt2, prime_bits - sqrt2_bits)) {
+      goto bn_err;
+    }
+  }
+  assert(prime_bits == (int)BN_num_bits(sqrt2));
+
+  do {
+    // Generate p and q, each of size |prime_bits|, using the steps outlined in
+    // appendix FIPS 186-4 appendix B.3.3.
+    //
+    // Each call to |generate_prime| fails with probability p = 2^-21. The
+    // probability that either call fails is 1 - (1-p)^2, which is around 2^-20.
+    if (!generate_prime(rsa->p, prime_bits, rsa->e, NULL, sqrt2,
+                        pow2_prime_bits_100, ctx, cb) ||
+        !BN_GENCB_call(cb, 3, 0) ||
+        !generate_prime(rsa->q, prime_bits, rsa->e, rsa->p, sqrt2,
+                        pow2_prime_bits_100, ctx, cb) ||
+        !BN_GENCB_call(cb, 3, 1)) {
+      goto bn_err;
+    }
+
+    if (BN_cmp(rsa->p, rsa->q) < 0) {
+      BIGNUM *tmp = rsa->p;
+      rsa->p = rsa->q;
+      rsa->q = tmp;
+    }
+
+    // Calculate d = e^(-1) (mod lcm(p-1, q-1)), per FIPS 186-4. This differs
+    // from typical RSA implementations which use (p-1)*(q-1).
+    //
+    // Note this means the size of d might reveal information about p-1 and
+    // q-1. However, we do operations with Chinese Remainder Theorem, so we only
+    // use d (mod p-1) and d (mod q-1) as exponents. Using a minimal totient
+    // does not affect those two values.
+    int no_inverse;
+    if (!bn_usub_consttime(pm1, rsa->p, BN_value_one()) ||
+        !bn_usub_consttime(qm1, rsa->q, BN_value_one()) ||
+        !bn_lcm_consttime(totient, pm1, qm1, ctx) ||
+        !bn_mod_inverse_consttime(rsa->d, &no_inverse, rsa->e, totient, ctx)) {
+      goto bn_err;
+    }
+
+    // Retry if |rsa->d| <= 2^|prime_bits|. See appendix B.3.1's guidance on
+    // values for d.
+  } while (BN_cmp(rsa->d, pow2_prime_bits) <= 0);
+
+  if (// Calculate n.
+      !bn_mul_consttime(rsa->n, rsa->p, rsa->q, ctx) ||
+      // Calculate d mod (p-1).
+      !bn_div_consttime(NULL, rsa->dmp1, rsa->d, pm1, ctx) ||
+      // Calculate d mod (q-1)
+      !bn_div_consttime(NULL, rsa->dmq1, rsa->d, qm1, ctx)) {
+    goto bn_err;
+  }
+  bn_set_minimal_width(rsa->n);
+
+  // Sanity-check that |rsa->n| has the specified size. This is implied by
+  // |generate_prime|'s bounds.
+  if (BN_num_bits(rsa->n) != (unsigned)bits) {
+    OPENSSL_PUT_ERROR(RSA, ERR_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  // Call |freeze_private_key| to compute the inverse of q mod p, by way of
+  // |rsa->mont_p|.
+  if (!freeze_private_key(rsa, ctx)) {
+    goto bn_err;
+  }
+
+  // The key generation process is complex and thus error-prone. It could be
+  // disastrous to generate and then use a bad key so double-check that the key
+  // makes sense.
+  if (!RSA_check_key(rsa)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_INTERNAL_ERROR);
+    goto err;
+  }
+
+  ret = 1;
+
+bn_err:
+  if (!ret) {
+    OPENSSL_PUT_ERROR(RSA, ERR_LIB_BN);
+  }
+err:
+  if (ctx != NULL) {
+    BN_CTX_end(ctx);
+    BN_CTX_free(ctx);
+  }
+  return ret;
+}
+
+static void replace_bignum(BIGNUM **out, BIGNUM **in) {
+  BN_free(*out);
+  *out = *in;
+  *in = NULL;
+}
+
+static void replace_bn_mont_ctx(BN_MONT_CTX **out, BN_MONT_CTX **in) {
+  BN_MONT_CTX_free(*out);
+  *out = *in;
+  *in = NULL;
+}
+
+int RSA_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e_value,
+                        BN_GENCB *cb) {
+  // |rsa_generate_key_impl|'s 2^-20 failure probability is too high at scale,
+  // so we run the FIPS algorithm four times, bringing it down to 2^-80. We
+  // should just adjust the retry limit, but FIPS 186-4 prescribes that value
+  // and thus results in unnecessary complexity.
+  for (int i = 0; i < 4; i++) {
+    ERR_clear_error();
+    // Generate into scratch space, to avoid leaving partial work on failure.
+    RSA *tmp = RSA_new();
+    if (tmp == NULL) {
+      return 0;
+    }
+    if (rsa_generate_key_impl(tmp, bits, e_value, cb)) {
+      replace_bignum(&rsa->n, &tmp->n);
+      replace_bignum(&rsa->e, &tmp->e);
+      replace_bignum(&rsa->d, &tmp->d);
+      replace_bignum(&rsa->p, &tmp->p);
+      replace_bignum(&rsa->q, &tmp->q);
+      replace_bignum(&rsa->dmp1, &tmp->dmp1);
+      replace_bignum(&rsa->dmq1, &tmp->dmq1);
+      replace_bignum(&rsa->iqmp, &tmp->iqmp);
+      replace_bn_mont_ctx(&rsa->mont_n, &tmp->mont_n);
+      replace_bn_mont_ctx(&rsa->mont_p, &tmp->mont_p);
+      replace_bn_mont_ctx(&rsa->mont_q, &tmp->mont_q);
+      replace_bignum(&rsa->d_fixed, &tmp->d_fixed);
+      replace_bignum(&rsa->dmp1_fixed, &tmp->dmp1_fixed);
+      replace_bignum(&rsa->dmq1_fixed, &tmp->dmq1_fixed);
+      replace_bignum(&rsa->inv_small_mod_large_mont,
+                     &tmp->inv_small_mod_large_mont);
+      rsa->private_key_frozen = tmp->private_key_frozen;
+      RSA_free(tmp);
+      return 1;
+    }
+    uint32_t err = ERR_peek_error();
+    RSA_free(tmp);
+    tmp = NULL;
+    // Only retry on |RSA_R_TOO_MANY_ITERATIONS|. This is so a caller-induced
+    // failure in |BN_GENCB_call| is still fatal.
+    if (ERR_GET_LIB(err) != ERR_LIB_RSA ||
+        ERR_GET_REASON(err) != RSA_R_TOO_MANY_ITERATIONS) {
+      return 0;
+    }
+  }
+
+  return 0;
+}
+
+int RSA_generate_key_fips(RSA *rsa, int bits, BN_GENCB *cb) {
+  // FIPS 186-4 allows 2048-bit and 3072-bit RSA keys (1024-bit and 1536-bit
+  // primes, respectively) with the prime generation method we use.
+  if (bits != 2048 && bits != 3072) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    return 0;
+  }
+
+  BIGNUM *e = BN_new();
+  int ret = e != NULL &&
+            BN_set_word(e, RSA_F4) &&
+            RSA_generate_key_ex(rsa, bits, e, cb) &&
+            RSA_check_fips(rsa);
+  BN_free(e);
+  return ret;
+}
+
+DEFINE_METHOD_FUNCTION(RSA_METHOD, RSA_default_method) {
+  // All of the methods are NULL to make it easier for the compiler/linker to
+  // drop unused functions. The wrapper functions will select the appropriate
+  // |rsa_default_*| implementation.
+  OPENSSL_memset(out, 0, sizeof(RSA_METHOD));
+  out->common.is_static = 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c
new file mode 100644
index 0000000..ab5c732
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c	
@@ -0,0 +1,654 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/crypto.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/aes.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/des.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/sha.h>
+
+#include "../../internal.h"
+#include "../ec/internal.h"
+#include "../rand/internal.h"
+
+
+// MSVC wants to put a NUL byte at the end of non-char arrays and so cannot
+// compile this.
+#if !defined(_MSC_VER)
+
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+// FIPS builds on Android will test for flag files, named after the module hash,
+// in /dev/boringssl/selftest/. If such a flag file exists, it's assumed that
+// self-tests have already passed and thus do not need to be repeated. (The
+// integrity tests always run, however.)
+//
+// If self-tests complete successfully and the environment variable named in
+// |kFlagWriteEnableEnvVar| is present, then the flag file will be created. The
+// flag file isn't written without the environment variable being set in order
+// to avoid SELinux violations on Android.
+#define BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+static const char kFlagPrefix[] = "/dev/boringssl/selftest/";
+static const char kFlagWriteEnableEnvVar[] = "BORINGSSL_SELF_TEST_CREATE_FLAG";
+#endif
+
+static void hexdump(const uint8_t *in, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    fprintf(stderr, "%02x", in[i]);
+  }
+}
+
+static int check_test(const void *expected, const void *actual,
+                      size_t expected_len, const char *name) {
+  if (OPENSSL_memcmp(actual, expected, expected_len) != 0) {
+    fprintf(stderr, "%s failed.\nExpected: ", name);
+    hexdump(expected, expected_len);
+    fprintf(stderr, "\nCalculated: ");
+    hexdump(actual, expected_len);
+    fprintf(stderr, "\n");
+    fflush(stderr);
+    return 0;
+  }
+  return 1;
+}
+
+static int set_bignum(BIGNUM **out, const uint8_t *in, size_t len) {
+  *out = BN_bin2bn(in, len, NULL);
+  return *out != NULL;
+}
+
+static RSA *self_test_rsa_key(void) {
+  static const uint8_t kN[] = {
+      0xd3, 0x3a, 0x62, 0x9f, 0x07, 0x77, 0xb0, 0x18, 0xf3, 0xff, 0xfe, 0xcc,
+      0xc9, 0xa2, 0xc2, 0x3a, 0xa6, 0x1d, 0xd8, 0xf0, 0x26, 0x5b, 0x38, 0x90,
+      0x17, 0x48, 0x15, 0xce, 0x21, 0xcd, 0xd6, 0x62, 0x99, 0xe2, 0xd7, 0xda,
+      0x40, 0x80, 0x3c, 0xad, 0x18, 0xb7, 0x26, 0xe9, 0x30, 0x8a, 0x23, 0x3f,
+      0x68, 0x9a, 0x9c, 0x31, 0x34, 0x91, 0x99, 0x06, 0x11, 0x36, 0xb2, 0x9e,
+      0x3a, 0xd0, 0xbc, 0xb9, 0x93, 0x4e, 0xb8, 0x72, 0xa1, 0x9f, 0xb6, 0x8c,
+      0xd5, 0x17, 0x1f, 0x7e, 0xaa, 0x75, 0xbb, 0xdf, 0xa1, 0x70, 0x48, 0xc4,
+      0xec, 0x9a, 0x51, 0xed, 0x41, 0xc9, 0x74, 0xc0, 0x3e, 0x1e, 0x85, 0x2f,
+      0xbe, 0x34, 0xc7, 0x65, 0x34, 0x8b, 0x4d, 0x55, 0x4b, 0xe1, 0x45, 0x54,
+      0x0d, 0x75, 0x7e, 0x89, 0x4d, 0x0c, 0xf6, 0x33, 0xe5, 0xfc, 0xfb, 0x56,
+      0x1b, 0xf2, 0x39, 0x9d, 0xe0, 0xff, 0x55, 0xcf, 0x02, 0x05, 0xb9, 0x74,
+      0xd2, 0x91, 0xfc, 0x87, 0xe1, 0xbb, 0x97, 0x2a, 0xe4, 0xdd, 0x20, 0xc0,
+      0x38, 0x47, 0xc0, 0x76, 0x3f, 0xa1, 0x9b, 0x5c, 0x20, 0xff, 0xff, 0xc7,
+      0x49, 0x3b, 0x4c, 0xaf, 0x99, 0xa6, 0x3e, 0x82, 0x5c, 0x58, 0x27, 0xce,
+      0x01, 0x03, 0xc3, 0x16, 0x35, 0x20, 0xe9, 0xf0, 0x15, 0x7a, 0x41, 0xd5,
+      0x1f, 0x52, 0xea, 0xdf, 0xad, 0x4c, 0xbb, 0x0d, 0xcb, 0x04, 0x91, 0xb0,
+      0x95, 0xa8, 0xce, 0x25, 0xfd, 0xd2, 0x62, 0x47, 0x77, 0xee, 0x13, 0xf1,
+      0x48, 0x72, 0x9e, 0xd9, 0x2d, 0xe6, 0x5f, 0xa4, 0xc6, 0x9e, 0x5a, 0xb2,
+      0xc6, 0xa2, 0xf7, 0x0a, 0x16, 0x17, 0xae, 0x6b, 0x1c, 0x30, 0x7c, 0x63,
+      0x08, 0x83, 0xe7, 0x43, 0xec, 0x54, 0x5e, 0x2c, 0x08, 0x0b, 0x5e, 0x46,
+      0xa7, 0x10, 0x93, 0x43, 0x53, 0x4e, 0xe3, 0x16, 0x73, 0x55, 0xce, 0xf2,
+      0x94, 0xc0, 0xbe, 0xb3,
+  };
+  static const uint8_t kE[] = {0x01, 0x00, 0x01};  // 65537
+  static const uint8_t kD[] = {
+      0x2f, 0x2c, 0x1e, 0xd2, 0x3d, 0x2c, 0xb1, 0x9b, 0x21, 0x02, 0xce, 0xb8,
+      0x95, 0x5f, 0x4f, 0xd9, 0x21, 0x38, 0x11, 0x36, 0xb0, 0x9a, 0x36, 0xab,
+      0x97, 0x47, 0x75, 0xf7, 0x2e, 0xfd, 0x75, 0x1f, 0x58, 0x16, 0x9c, 0xf6,
+      0x14, 0xe9, 0x8e, 0xa3, 0x69, 0x9d, 0x9d, 0x86, 0xfe, 0x5c, 0x1b, 0x3b,
+      0x11, 0xf5, 0x55, 0x64, 0x77, 0xc4, 0xfc, 0x53, 0xaa, 0x8c, 0x78, 0x9f,
+      0x75, 0xab, 0x20, 0x3a, 0xa1, 0x77, 0x37, 0x22, 0x02, 0x8e, 0x54, 0x8a,
+      0x67, 0x1c, 0x5e, 0xe0, 0x3e, 0xd9, 0x44, 0x37, 0xd1, 0x29, 0xee, 0x56,
+      0x6c, 0x30, 0x9a, 0x93, 0x4d, 0xd9, 0xdb, 0xc5, 0x03, 0x1a, 0x75, 0xcc,
+      0x0f, 0xc2, 0x61, 0xb5, 0x6c, 0x62, 0x9f, 0xc6, 0xa8, 0xc7, 0x8a, 0x60,
+      0x17, 0x11, 0x62, 0x4c, 0xef, 0x74, 0x31, 0x97, 0xad, 0x89, 0x2d, 0xe8,
+      0x31, 0x1d, 0x8b, 0x58, 0x82, 0xe3, 0x03, 0x1a, 0x6b, 0xdf, 0x3f, 0x3e,
+      0xa4, 0x27, 0x19, 0xef, 0x46, 0x7a, 0x90, 0xdf, 0xa7, 0xe7, 0xc9, 0x66,
+      0xab, 0x41, 0x1d, 0x65, 0x78, 0x1c, 0x18, 0x40, 0x5c, 0xd6, 0x87, 0xb5,
+      0xea, 0x29, 0x44, 0xb3, 0xf5, 0xb3, 0xd2, 0x4f, 0xce, 0x88, 0x78, 0x49,
+      0x27, 0x4e, 0x0b, 0x30, 0x85, 0xfb, 0x73, 0xfd, 0x8b, 0x32, 0x15, 0xee,
+      0x1f, 0xc9, 0x0e, 0x89, 0xb9, 0x43, 0x2f, 0xe9, 0x60, 0x8d, 0xda, 0xae,
+      0x2b, 0x30, 0x99, 0xee, 0x88, 0x81, 0x20, 0x7b, 0x4a, 0xc3, 0x18, 0xf2,
+      0x94, 0x02, 0x79, 0x94, 0xaa, 0x65, 0xd9, 0x1b, 0x45, 0x2a, 0xac, 0x6e,
+      0x30, 0x48, 0x57, 0xea, 0xbe, 0x79, 0x7d, 0xfc, 0x67, 0xaa, 0x47, 0xc0,
+      0xf7, 0x52, 0xfd, 0x0b, 0x63, 0x4e, 0x3d, 0x2e, 0xcc, 0x36, 0xa0, 0xdb,
+      0x92, 0x0b, 0xa9, 0x1b, 0xeb, 0xc2, 0xd5, 0x08, 0xd3, 0x85, 0x87, 0xf8,
+      0x5d, 0x1a, 0xf6, 0xc1,
+  };
+  static const uint8_t kP[] = {
+      0xf7, 0x06, 0xa3, 0x98, 0x8a, 0x52, 0xf8, 0x63, 0x68, 0x27, 0x4f, 0x68,
+      0x7f, 0x34, 0xec, 0x8e, 0x5d, 0xf8, 0x30, 0x92, 0xb3, 0x62, 0x4c, 0xeb,
+      0xdb, 0x19, 0x6b, 0x09, 0xc5, 0xa3, 0xf0, 0xbb, 0xff, 0x0f, 0xc2, 0xd4,
+      0x9b, 0xc9, 0x54, 0x4f, 0xb9, 0xf9, 0xe1, 0x4c, 0xf0, 0xe3, 0x4c, 0x90,
+      0xda, 0x7a, 0x01, 0xc2, 0x9f, 0xc4, 0xc8, 0x8e, 0xb1, 0x1e, 0x93, 0x75,
+      0x75, 0xc6, 0x13, 0x25, 0xc3, 0xee, 0x3b, 0xcc, 0xb8, 0x72, 0x6c, 0x49,
+      0xb0, 0x09, 0xfb, 0xab, 0x44, 0xeb, 0x4d, 0x40, 0xf0, 0x61, 0x6b, 0xe5,
+      0xe6, 0xfe, 0x3e, 0x0a, 0x77, 0x26, 0x39, 0x76, 0x3d, 0x4c, 0x3e, 0x9b,
+      0x5b, 0xc0, 0xaf, 0xa2, 0x58, 0x76, 0xb0, 0xe9, 0xda, 0x7f, 0x0e, 0x78,
+      0xc9, 0x76, 0x49, 0x5c, 0xfa, 0xb3, 0xb0, 0x15, 0x4b, 0x41, 0xc7, 0x27,
+      0xa4, 0x75, 0x28, 0x5c, 0x30, 0x69, 0x50, 0x29,
+  };
+  static const uint8_t kQ[] = {
+      0xda, 0xe6, 0xd2, 0xbb, 0x44, 0xff, 0x4f, 0xdf, 0x57, 0xc1, 0x11, 0xa3,
+      0x51, 0xba, 0x17, 0x89, 0x4c, 0x01, 0xc0, 0x0c, 0x97, 0x34, 0x50, 0xcf,
+      0x32, 0x1e, 0xc0, 0xbd, 0x7b, 0x35, 0xb5, 0x6a, 0x26, 0xcc, 0xea, 0x4c,
+      0x8e, 0x87, 0x4a, 0x67, 0x8b, 0xd3, 0xe5, 0x4f, 0x3a, 0x60, 0x48, 0x59,
+      0x04, 0x93, 0x39, 0xd7, 0x7c, 0xfb, 0x19, 0x1a, 0x34, 0xd5, 0xe8, 0xaf,
+      0xe7, 0x22, 0x2c, 0x0d, 0xc2, 0x91, 0x69, 0xb6, 0xe9, 0x2a, 0xe9, 0x1c,
+      0x4c, 0x6e, 0x8f, 0x40, 0xf5, 0xa8, 0x3e, 0x82, 0x69, 0x69, 0xbe, 0x9f,
+      0x7d, 0x5c, 0x7f, 0x92, 0x78, 0x17, 0xa3, 0x6d, 0x41, 0x2d, 0x72, 0xed,
+      0x3f, 0x71, 0xfa, 0x97, 0xb4, 0x63, 0xe4, 0x4f, 0xd9, 0x46, 0x03, 0xfb,
+      0x00, 0xeb, 0x30, 0x70, 0xb9, 0x51, 0xd9, 0x0a, 0xd2, 0xf8, 0x50, 0xd4,
+      0xfb, 0x43, 0x84, 0xf8, 0xac, 0x58, 0xc3, 0x7b,
+  };
+  static const uint8_t kDModPMinusOne[] = {
+      0xf5, 0x50, 0x8f, 0x88, 0x7d, 0xdd, 0xb5, 0xb4, 0x2a, 0x8b, 0xd7, 0x4d,
+      0x23, 0xfe, 0xaf, 0xe9, 0x16, 0x22, 0xd2, 0x41, 0xed, 0x88, 0xf2, 0x70,
+      0xcb, 0x4d, 0xeb, 0xc1, 0x71, 0x97, 0xc4, 0x0b, 0x3e, 0x5a, 0x2d, 0x96,
+      0xab, 0xfa, 0xfd, 0x12, 0x8b, 0xd3, 0x3e, 0x4e, 0x05, 0x6f, 0x04, 0xeb,
+      0x59, 0x3c, 0x0e, 0xa1, 0x73, 0xbe, 0x9d, 0x99, 0x2f, 0x05, 0xf9, 0x54,
+      0x8d, 0x98, 0x1e, 0x0d, 0xc4, 0x0c, 0xc3, 0x30, 0x23, 0xff, 0xe5, 0xd0,
+      0x2b, 0xd5, 0x4e, 0x2b, 0xa0, 0xae, 0xb8, 0x32, 0x84, 0x45, 0x8b, 0x3c,
+      0x6d, 0xf0, 0x10, 0x36, 0x9e, 0x6a, 0xc4, 0x67, 0xca, 0xa9, 0xfc, 0x06,
+      0x96, 0xd0, 0xbc, 0xda, 0xd1, 0x55, 0x55, 0x8d, 0x77, 0x21, 0xf4, 0x82,
+      0x39, 0x37, 0x91, 0xd5, 0x97, 0x56, 0x78, 0xc8, 0x3c, 0xcb, 0x5e, 0xf6,
+      0xdc, 0x58, 0x48, 0xb3, 0x7c, 0x94, 0x29, 0x39,
+  };
+  static const uint8_t kDModQMinusOne[] = {
+      0x64, 0x65, 0xbd, 0x7d, 0x1a, 0x96, 0x26, 0xa1, 0xfe, 0xf3, 0x94, 0x0d,
+      0x5d, 0xec, 0x85, 0xe2, 0xf8, 0xb3, 0x4c, 0xcb, 0xf9, 0x85, 0x8b, 0x12,
+      0x9c, 0xa0, 0x32, 0x32, 0x35, 0x92, 0x5a, 0x94, 0x47, 0x1b, 0x70, 0xd2,
+      0x90, 0x04, 0x49, 0x01, 0xd8, 0xc5, 0xe4, 0xc4, 0x43, 0xb7, 0xe9, 0x36,
+      0xba, 0xbc, 0x73, 0xa8, 0xfb, 0xaf, 0x86, 0xc1, 0xd8, 0x3d, 0xcb, 0xac,
+      0xf1, 0xcb, 0x60, 0x7d, 0x27, 0x21, 0xde, 0x64, 0x7f, 0xe8, 0xa8, 0x65,
+      0xcc, 0x40, 0x60, 0xff, 0xa0, 0x2b, 0xfc, 0x0f, 0x80, 0x1d, 0x79, 0xca,
+      0x58, 0x8a, 0xd6, 0x0f, 0xed, 0x78, 0x9a, 0x02, 0x00, 0x04, 0xc2, 0x53,
+      0x41, 0xe8, 0x1a, 0xd0, 0xfd, 0x71, 0x5b, 0x43, 0xac, 0x19, 0x4a, 0xb6,
+      0x12, 0xa3, 0xcb, 0xe1, 0xc7, 0x7d, 0x5c, 0x98, 0x74, 0x4e, 0x63, 0x74,
+      0x6b, 0x91, 0x7a, 0x29, 0x3b, 0x92, 0xb2, 0x85,
+  };
+  static const uint8_t kQInverseModP[] = {
+      0xd0, 0xde, 0x19, 0xda, 0x1e, 0xa2, 0xd8, 0x8f, 0x1c, 0x92, 0x73, 0xb0,
+      0xc9, 0x90, 0xc7, 0xf5, 0xec, 0xc5, 0x89, 0x01, 0x05, 0x78, 0x11, 0x2d,
+      0x74, 0x34, 0x44, 0xad, 0xd5, 0xf7, 0xa4, 0xfe, 0x9f, 0x25, 0x4d, 0x0b,
+      0x92, 0xe3, 0xb8, 0x7d, 0xd3, 0xfd, 0xa5, 0xca, 0x95, 0x60, 0xa3, 0xf9,
+      0x55, 0x42, 0x14, 0xb2, 0x45, 0x51, 0x9f, 0x73, 0x88, 0x43, 0x8a, 0xd1,
+      0x65, 0x9e, 0xd1, 0xf7, 0x82, 0x2a, 0x2a, 0x8d, 0x70, 0x56, 0xe3, 0xef,
+      0xc9, 0x0e, 0x2a, 0x2c, 0x15, 0xaf, 0x7f, 0x97, 0x81, 0x66, 0xf3, 0xb5,
+      0x00, 0xa9, 0x26, 0xcc, 0x1e, 0xc2, 0x98, 0xdd, 0xd3, 0x37, 0x06, 0x79,
+      0xb3, 0x60, 0x58, 0x79, 0x99, 0x3f, 0xa3, 0x15, 0x1f, 0x31, 0xe3, 0x11,
+      0x88, 0x4c, 0x35, 0x57, 0xfa, 0x79, 0xd7, 0xd8, 0x72, 0xee, 0x73, 0x95,
+      0x89, 0x29, 0xc7, 0x05, 0x27, 0x68, 0x90, 0x15,
+  };
+
+  RSA *rsa = RSA_new();
+  if (rsa == NULL ||
+      !set_bignum(&rsa->n, kN, sizeof(kN)) ||
+      !set_bignum(&rsa->e, kE, sizeof(kE)) ||
+      !set_bignum(&rsa->d, kD, sizeof(kD)) ||
+      !set_bignum(&rsa->p, kP, sizeof(kP)) ||
+      !set_bignum(&rsa->q, kQ, sizeof(kQ)) ||
+      !set_bignum(&rsa->dmp1, kDModPMinusOne, sizeof(kDModPMinusOne)) ||
+      !set_bignum(&rsa->dmq1, kDModQMinusOne, sizeof(kDModQMinusOne)) ||
+      !set_bignum(&rsa->iqmp, kQInverseModP, sizeof(kQInverseModP))) {
+    RSA_free(rsa);
+    return NULL;
+  }
+
+  return rsa;
+}
+
+static EC_KEY *self_test_ecdsa_key(void) {
+  static const uint8_t kQx[] = {
+      0xc8, 0x15, 0x61, 0xec, 0xf2, 0xe5, 0x4e, 0xde, 0xfe, 0x66, 0x17,
+      0xdb, 0x1c, 0x7a, 0x34, 0xa7, 0x07, 0x44, 0xdd, 0xb2, 0x61, 0xf2,
+      0x69, 0xb8, 0x3d, 0xac, 0xfc, 0xd2, 0xad, 0xe5, 0xa6, 0x81,
+  };
+  static const uint8_t kQy[] = {
+      0xe0, 0xe2, 0xaf, 0xa3, 0xf9, 0xb6, 0xab, 0xe4, 0xc6, 0x98, 0xef,
+      0x64, 0x95, 0xf1, 0xbe, 0x49, 0xa3, 0x19, 0x6c, 0x50, 0x56, 0xac,
+      0xb3, 0x76, 0x3f, 0xe4, 0x50, 0x7e, 0xec, 0x59, 0x6e, 0x88,
+  };
+  static const uint8_t kD[] = {
+      0xc6, 0xc1, 0xaa, 0xda, 0x15, 0xb0, 0x76, 0x61, 0xf8, 0x14, 0x2c,
+      0x6c, 0xaf, 0x0f, 0xdb, 0x24, 0x1a, 0xff, 0x2e, 0xfe, 0x46, 0xc0,
+      0x93, 0x8b, 0x74, 0xf2, 0xbc, 0xc5, 0x30, 0x52, 0xb0, 0x77,
+  };
+
+  EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+  BIGNUM *qx = BN_bin2bn(kQx, sizeof(kQx), NULL);
+  BIGNUM *qy = BN_bin2bn(kQy, sizeof(kQy), NULL);
+  BIGNUM *d = BN_bin2bn(kD, sizeof(kD), NULL);
+  if (ec_key == NULL || qx == NULL || qy == NULL || d == NULL ||
+      !EC_KEY_set_public_key_affine_coordinates(ec_key, qx, qy) ||
+      !EC_KEY_set_private_key(ec_key, d)) {
+    EC_KEY_free(ec_key);
+    ec_key = NULL;
+  }
+
+  BN_free(qx);
+  BN_free(qy);
+  BN_free(d);
+  return ec_key;
+}
+
+#if defined(OPENSSL_ANDROID)
+static const size_t kModuleDigestSize = SHA256_DIGEST_LENGTH;
+#else
+static const size_t kModuleDigestSize = SHA512_DIGEST_LENGTH;
+#endif
+
+int boringssl_fips_self_test(
+    const uint8_t *module_hash, size_t module_hash_len) {
+#if defined(BORINGSSL_FIPS_SELF_TEST_FLAG_FILE)
+  char flag_path[sizeof(kFlagPrefix) + 2*kModuleDigestSize];
+  if (module_hash_len != 0) {
+    if (module_hash_len != kModuleDigestSize) {
+      fprintf(stderr,
+              "module hash of length %zu does not match expected length %zu\n",
+              module_hash_len, kModuleDigestSize);
+      BORINGSSL_FIPS_abort();
+    }
+
+    // Test whether the flag file exists.
+    memcpy(flag_path, kFlagPrefix, sizeof(kFlagPrefix) - 1);
+    static const char kHexTable[17] = "0123456789abcdef";
+    for (size_t i = 0; i < kModuleDigestSize; i++) {
+      flag_path[sizeof(kFlagPrefix) - 1 + 2 * i] =
+          kHexTable[module_hash[i] >> 4];
+      flag_path[sizeof(kFlagPrefix) - 1 + 2 * i + 1] =
+          kHexTable[module_hash[i] & 15];
+    }
+    flag_path[sizeof(flag_path) - 1] = 0;
+
+    if (access(flag_path, F_OK) == 0) {
+      // Flag file found. Skip self-tests.
+      return 1;
+    }
+  }
+#endif // BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+
+  static const uint8_t kAESKey[16] = "BoringCrypto Key";
+  static const uint8_t kAESIV[16] = {0};
+  static const uint8_t kPlaintext[64] =
+      "BoringCryptoModule FIPS KAT Encryption and Decryption Plaintext!";
+  static const uint8_t kAESCBCCiphertext[64] = {
+      0x87, 0x2d, 0x98, 0xc2, 0xcc, 0x31, 0x5b, 0x41, 0xe0, 0xfa, 0x7b,
+      0x0a, 0x71, 0xc0, 0x42, 0xbf, 0x4f, 0x61, 0xd0, 0x0d, 0x58, 0x8c,
+      0xf7, 0x05, 0xfb, 0x94, 0x89, 0xd3, 0xbc, 0xaa, 0x1a, 0x50, 0x45,
+      0x1f, 0xc3, 0x8c, 0xb8, 0x98, 0x86, 0xa3, 0xe3, 0x6c, 0xfc, 0xad,
+      0x3a, 0xb5, 0x59, 0x27, 0x7d, 0x21, 0x07, 0xca, 0x4c, 0x1d, 0x55,
+      0x34, 0xdd, 0x5a, 0x2d, 0xc4, 0xb4, 0xf5, 0xa8,
+#if !defined(BORINGSSL_FIPS_BREAK_AES_CBC)
+      0x35
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kAESGCMCiphertext[80] = {
+      0x4a, 0xd8, 0xe7, 0x7d, 0x78, 0xd7, 0x7d, 0x5e, 0xb2, 0x11, 0xb6, 0xc9,
+      0xa4, 0xbc, 0xb2, 0xae, 0xbe, 0x93, 0xd1, 0xb7, 0xfe, 0x65, 0xc1, 0x82,
+      0x2a, 0xb6, 0x71, 0x5f, 0x1a, 0x7c, 0xe0, 0x1b, 0x2b, 0xe2, 0x53, 0xfa,
+      0xa0, 0x47, 0xfa, 0xd7, 0x8f, 0xb1, 0x4a, 0xc4, 0xdc, 0x89, 0xf9, 0xb4,
+      0x14, 0x4d, 0xde, 0x95, 0xea, 0x29, 0x69, 0x76, 0x81, 0xa3, 0x5c, 0x33,
+      0xd8, 0x37, 0xd8, 0xfa, 0x47, 0x19, 0x46, 0x2f, 0xf1, 0x90, 0xb7, 0x61,
+      0x8f, 0x6f, 0xdd, 0x31, 0x3f, 0x6a, 0x64,
+#if !defined(BORINGSSL_FIPS_BREAK_AES_GCM)
+      0x0d
+#else
+      0x00
+#endif
+  };
+  static const DES_cblock kDESKey1 = {"BCMDESK1"};
+  static const DES_cblock kDESKey2 = {"BCMDESK2"};
+  static const DES_cblock kDESKey3 = {"BCMDESK3"};
+  static const DES_cblock kDESIV = {"BCMDESIV"};
+  static const uint8_t kDESCiphertext[64] = {
+      0xa4, 0x30, 0x7a, 0x4c, 0x1f, 0x60, 0x16, 0xd7, 0x4f, 0x41, 0xe1,
+      0xbb, 0x27, 0xc4, 0x27, 0x37, 0xd4, 0x7f, 0xb9, 0x10, 0xf8, 0xbc,
+      0xaf, 0x93, 0x91, 0xb8, 0x88, 0x24, 0xb1, 0xf6, 0xf8, 0xbd, 0x31,
+      0x96, 0x06, 0x76, 0xde, 0x32, 0xcd, 0x29, 0x29, 0xba, 0x70, 0x5f,
+      0xea, 0xc0, 0xcb, 0xde, 0xc7, 0x75, 0x90, 0xe0, 0x0f, 0x5e, 0x2c,
+      0x0d, 0x49, 0x20, 0xd5, 0x30, 0x83, 0xf8, 0x08,
+#if !defined(BORINGSSL_FIPS_BREAK_DES)
+      0x5a
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA1[20] = {
+      0xc6, 0xf8, 0xc9, 0x63, 0x1c, 0x14, 0x23, 0x62, 0x9b, 0xbd,
+      0x55, 0x82, 0xf4, 0xd6, 0x1d, 0xf2, 0xab, 0x7d, 0xc8,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_1)
+      0x28
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA256[32] = {
+      0x37, 0xbd, 0x70, 0x53, 0x72, 0xfc, 0xd4, 0x03, 0x79, 0x70, 0xfb,
+      0x06, 0x95, 0xb1, 0x2a, 0x82, 0x48, 0xe1, 0x3e, 0xf2, 0x33, 0xfb,
+      0xef, 0x29, 0x81, 0x22, 0x45, 0x40, 0x43, 0x70, 0xce,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_256)
+      0x0f
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA512[64] = {
+      0x08, 0x6a, 0x1c, 0x84, 0x61, 0x9d, 0x8e, 0xb3, 0xc0, 0x97, 0x4e,
+      0xa1, 0x9f, 0x9c, 0xdc, 0xaf, 0x3b, 0x5c, 0x31, 0xf0, 0xf2, 0x74,
+      0xc3, 0xbd, 0x6e, 0xd6, 0x1e, 0xb2, 0xbb, 0x34, 0x74, 0x72, 0x5c,
+      0x51, 0x29, 0x8b, 0x87, 0x3a, 0xa3, 0xf2, 0x25, 0x23, 0xd4, 0x1c,
+      0x82, 0x1b, 0xfe, 0xd3, 0xc6, 0xee, 0xb5, 0xd6, 0xaf, 0x07, 0x7b,
+      0x98, 0xca, 0xa7, 0x01, 0xf3, 0x94, 0xf3, 0x68,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_512)
+      0x14
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kRSASignature[256] = {
+      0x62, 0x66, 0x4b, 0xe3, 0xb1, 0xd2, 0x83, 0xf1, 0xa8, 0x56, 0x2b, 0x33,
+      0x60, 0x1e, 0xdb, 0x1e, 0x06, 0xf7, 0xa7, 0x1e, 0xa8, 0xef, 0x03, 0x4d,
+      0x0c, 0xf6, 0x83, 0x75, 0x7a, 0xf0, 0x14, 0xc7, 0xe2, 0x94, 0x3a, 0xb5,
+      0x67, 0x56, 0xa5, 0x48, 0x7f, 0x3a, 0xa5, 0xbf, 0xf7, 0x1d, 0x44, 0xa6,
+      0x34, 0xed, 0x9b, 0xd6, 0x51, 0xaa, 0x2c, 0x4e, 0xce, 0x60, 0x5f, 0xe9,
+      0x0e, 0xd5, 0xcd, 0xeb, 0x23, 0x27, 0xf8, 0xfb, 0x45, 0xe5, 0x34, 0x63,
+      0x77, 0x7f, 0x2e, 0x80, 0xcf, 0x9d, 0x2e, 0xfc, 0xe2, 0x50, 0x75, 0x29,
+      0x46, 0xf4, 0xaf, 0x91, 0xed, 0x36, 0xe1, 0x5e, 0xef, 0x66, 0xa1, 0xff,
+      0x27, 0xfc, 0x87, 0x7e, 0x60, 0x84, 0x0f, 0x54, 0x51, 0x56, 0x0f, 0x68,
+      0x99, 0xc0, 0x3f, 0xeb, 0xa5, 0xa0, 0x46, 0xb0, 0x86, 0x02, 0xb0, 0xc8,
+      0xe8, 0x46, 0x13, 0x06, 0xcd, 0xb7, 0x8a, 0xd0, 0x3b, 0x46, 0xd0, 0x14,
+      0x64, 0x53, 0x9b, 0x5b, 0x5e, 0x02, 0x45, 0xba, 0x6e, 0x7e, 0x0a, 0xb9,
+      0x9e, 0x62, 0xb7, 0xd5, 0x7a, 0x87, 0xea, 0xd3, 0x24, 0xa5, 0xef, 0xb3,
+      0xdc, 0x05, 0x9c, 0x04, 0x60, 0x4b, 0xde, 0xa8, 0x90, 0x08, 0x7b, 0x6a,
+      0x5f, 0xb4, 0x3f, 0xda, 0xc5, 0x1f, 0x6e, 0xd6, 0x15, 0xde, 0x65, 0xa4,
+      0x6e, 0x62, 0x9d, 0x8f, 0xa8, 0xbe, 0x86, 0xf6, 0x09, 0x90, 0x40, 0xa5,
+      0xf4, 0x23, 0xc5, 0xf6, 0x38, 0x86, 0x0d, 0x1c, 0xed, 0x4a, 0x0a, 0xae,
+      0xa4, 0x26, 0xc2, 0x2e, 0xd3, 0x13, 0x66, 0x61, 0xea, 0x35, 0x01, 0x0e,
+      0x13, 0xda, 0x78, 0x20, 0xae, 0x59, 0x5f, 0x9b, 0xa9, 0x6c, 0xf9, 0x1b,
+      0xdf, 0x76, 0x53, 0xc8, 0xa7, 0xf5, 0x63, 0x6d, 0xf3, 0xff, 0xfd, 0xaf,
+      0x75, 0x4b, 0xac, 0x67, 0xb1, 0x3c, 0xbf, 0x5e, 0xde, 0x73, 0x02, 0x6d,
+      0xd2, 0x0c, 0xb1,
+#if !defined(BORINGSSL_FIPS_BREAK_RSA_SIG)
+      0x64
+#else
+      0x00
+#endif
+  };
+  const uint8_t kDRBGEntropy[48] =
+      "BCM Known Answer Test DBRG Initial Entropy      ";
+  const uint8_t kDRBGPersonalization[18] = "BCMPersonalization";
+  const uint8_t kDRBGAD[16] = "BCM DRBG KAT AD ";
+  const uint8_t kDRBGOutput[64] = {
+      0x1d, 0x63, 0xdf, 0x05, 0x51, 0x49, 0x22, 0x46, 0xcd, 0x9b, 0xc5,
+      0xbb, 0xf1, 0x5d, 0x44, 0xae, 0x13, 0x78, 0xb1, 0xe4, 0x7c, 0xf1,
+      0x96, 0x33, 0x3d, 0x60, 0xb6, 0x29, 0xd4, 0xbb, 0x6b, 0x44, 0xf9,
+      0xef, 0xd9, 0xf4, 0xa2, 0xba, 0x48, 0xea, 0x39, 0x75, 0x59, 0x32,
+      0xf7, 0x31, 0x2c, 0x98, 0x14, 0x2b, 0x49, 0xdf, 0x02, 0xb6, 0x5d,
+      0x71, 0x09, 0x50, 0xdb, 0x23, 0xdb, 0xe5, 0x22,
+#if !defined(BORINGSSL_FIPS_BREAK_DRBG)
+      0x95
+#else
+      0x00
+#endif
+  };
+  const uint8_t kDRBGEntropy2[48] =
+      "BCM Known Answer Test DBRG Reseed Entropy       ";
+  const uint8_t kDRBGReseedOutput[64] = {
+      0xa4, 0x77, 0x05, 0xdb, 0x14, 0x11, 0x76, 0x71, 0x42, 0x5b, 0xd8,
+      0xd7, 0xa5, 0x4f, 0x8b, 0x39, 0xf2, 0x10, 0x4a, 0x50, 0x5b, 0xa2,
+      0xc8, 0xf0, 0xbb, 0x3e, 0xa1, 0xa5, 0x90, 0x7d, 0x54, 0xd9, 0xc6,
+      0xb0, 0x96, 0xc0, 0x2b, 0x7e, 0x9b, 0xc9, 0xa1, 0xdd, 0x78, 0x2e,
+      0xd5, 0xa8, 0x66, 0x16, 0xbd, 0x18, 0x3c, 0xf2, 0xaa, 0x7a, 0x2b,
+      0x37, 0xf9, 0xab, 0x35, 0x64, 0x15, 0x01, 0x3f, 0xc4,
+  };
+  const uint8_t kECDSASigR[32] = {
+      0x67, 0x80, 0xc5, 0xfc, 0x70, 0x27, 0x5e, 0x2c, 0x70, 0x61, 0xa0,
+      0xe7, 0x87, 0x7b, 0xb1, 0x74, 0xde, 0xad, 0xeb, 0x98, 0x87, 0x02,
+      0x7f, 0x3f, 0xa8, 0x36, 0x54, 0x15, 0x8b, 0xa7, 0xf5,
+#if !defined(BORINGSSL_FIPS_BREAK_ECDSA_SIG)
+      0x0c,
+#else
+      0x00,
+#endif
+  };
+  const uint8_t kECDSASigS[32] = {
+      0xa5, 0x93, 0xe0, 0x23, 0x91, 0xe7, 0x4b, 0x8d, 0x77, 0x25, 0xa6,
+      0xba, 0x4d, 0xd9, 0x86, 0x77, 0xda, 0x7d, 0x8f, 0xef, 0xc4, 0x1a,
+      0xf0, 0xcc, 0x81, 0xe5, 0xea, 0x3f, 0xc2, 0x41, 0x7f, 0xd8,
+  };
+
+  EVP_AEAD_CTX aead_ctx;
+  EVP_AEAD_CTX_zero(&aead_ctx);
+  RSA *rsa_key = NULL;
+  EC_KEY *ec_key = NULL;
+  ECDSA_SIG *sig = NULL;
+  int ret = 0;
+
+  AES_KEY aes_key;
+  uint8_t aes_iv[16];
+  uint8_t output[256];
+
+  // AES-CBC Encryption KAT
+  memcpy(aes_iv, kAESIV, sizeof(kAESIV));
+  if (AES_set_encrypt_key(kAESKey, 8 * sizeof(kAESKey), &aes_key) != 0) {
+    fprintf(stderr, "AES_set_encrypt_key failed.\n");
+    goto err;
+  }
+  AES_cbc_encrypt(kPlaintext, output, sizeof(kPlaintext), &aes_key, aes_iv,
+                  AES_ENCRYPT);
+  if (!check_test(kAESCBCCiphertext, output, sizeof(kAESCBCCiphertext),
+                  "AES-CBC Encryption KAT")) {
+    goto err;
+  }
+
+  // AES-CBC Decryption KAT
+  memcpy(aes_iv, kAESIV, sizeof(kAESIV));
+  if (AES_set_decrypt_key(kAESKey, 8 * sizeof(kAESKey), &aes_key) != 0) {
+    fprintf(stderr, "AES_set_decrypt_key failed.\n");
+    goto err;
+  }
+  AES_cbc_encrypt(kAESCBCCiphertext, output, sizeof(kAESCBCCiphertext),
+                  &aes_key, aes_iv, AES_DECRYPT);
+  if (!check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "AES-CBC Decryption KAT")) {
+    goto err;
+  }
+
+  size_t out_len;
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  OPENSSL_memset(nonce, 0, sizeof(nonce));
+  if (!EVP_AEAD_CTX_init(&aead_ctx, EVP_aead_aes_128_gcm(), kAESKey,
+                         sizeof(kAESKey), 0, NULL)) {
+    fprintf(stderr, "EVP_AEAD_CTX_init for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  // AES-GCM Encryption KAT
+  if (!EVP_AEAD_CTX_seal(&aead_ctx, output, &out_len, sizeof(output), nonce,
+                         EVP_AEAD_nonce_length(EVP_aead_aes_128_gcm()),
+                         kPlaintext, sizeof(kPlaintext), NULL, 0) ||
+      !check_test(kAESGCMCiphertext, output, sizeof(kAESGCMCiphertext),
+                  "AES-GCM Encryption KAT")) {
+    fprintf(stderr, "EVP_AEAD_CTX_seal for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  // AES-GCM Decryption KAT
+  if (!EVP_AEAD_CTX_open(&aead_ctx, output, &out_len, sizeof(output), nonce,
+                         EVP_AEAD_nonce_length(EVP_aead_aes_128_gcm()),
+                         kAESGCMCiphertext, sizeof(kAESGCMCiphertext), NULL,
+                         0) ||
+      !check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "AES-GCM Decryption KAT")) {
+    fprintf(stderr, "EVP_AEAD_CTX_open for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  DES_key_schedule des1, des2, des3;
+  DES_cblock des_iv;
+  DES_set_key(&kDESKey1, &des1);
+  DES_set_key(&kDESKey2, &des2);
+  DES_set_key(&kDESKey3, &des3);
+
+  // 3DES Encryption KAT
+  memcpy(&des_iv, &kDESIV, sizeof(des_iv));
+  DES_ede3_cbc_encrypt(kPlaintext, output, sizeof(kPlaintext), &des1, &des2,
+                       &des3, &des_iv, DES_ENCRYPT);
+  if (!check_test(kDESCiphertext, output, sizeof(kDESCiphertext),
+                  "3DES Encryption KAT")) {
+    goto err;
+  }
+
+  // 3DES Decryption KAT
+  memcpy(&des_iv, &kDESIV, sizeof(des_iv));
+  DES_ede3_cbc_encrypt(kDESCiphertext, output, sizeof(kDESCiphertext), &des1,
+                       &des2, &des3, &des_iv, DES_DECRYPT);
+  if (!check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "3DES Decryption KAT")) {
+    goto err;
+  }
+
+  // SHA-1 KAT
+  SHA1(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA1, output, sizeof(kPlaintextSHA1),
+                  "SHA-1 KAT")) {
+    goto err;
+  }
+
+  // SHA-256 KAT
+  SHA256(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA256, output, sizeof(kPlaintextSHA256),
+                  "SHA-256 KAT")) {
+    goto err;
+  }
+
+  // SHA-512 KAT
+  SHA512(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA512, output, sizeof(kPlaintextSHA512),
+                  "SHA-512 KAT")) {
+    goto err;
+  }
+
+  rsa_key = self_test_rsa_key();
+  if (rsa_key == NULL) {
+    fprintf(stderr, "RSA KeyGen failed\n");
+    goto err;
+  }
+
+  // RSA Sign KAT
+  unsigned sig_len;
+
+  // Disable blinding for the power-on tests because it's not needed and
+  // triggers an entropy draw.
+  rsa_key->flags |= RSA_FLAG_NO_BLINDING;
+
+  if (!RSA_sign(NID_sha256, kPlaintextSHA256, sizeof(kPlaintextSHA256), output,
+                &sig_len, rsa_key) ||
+      !check_test(kRSASignature, output, sizeof(kRSASignature),
+                  "RSA Sign KAT")) {
+    fprintf(stderr, "RSA signing test failed.\n");
+    goto err;
+  }
+
+  // RSA Verify KAT
+  if (!RSA_verify(NID_sha256, kPlaintextSHA256, sizeof(kPlaintextSHA256),
+                  kRSASignature, sizeof(kRSASignature), rsa_key)) {
+    fprintf(stderr, "RSA Verify KAT failed.\n");
+    goto err;
+  }
+
+  ec_key = self_test_ecdsa_key();
+  if (ec_key == NULL) {
+    fprintf(stderr, "ECDSA KeyGen failed\n");
+    goto err;
+  }
+
+  // ECDSA Sign/Verify PWCT
+
+  // The 'k' value for ECDSA is fixed to avoid an entropy draw.
+  ec_key->fixed_k = BN_new();
+  if (ec_key->fixed_k == NULL ||
+      !BN_set_word(ec_key->fixed_k, 42)) {
+    fprintf(stderr, "Out of memory\n");
+    goto err;
+  }
+
+  sig = ECDSA_do_sign(kPlaintextSHA256, sizeof(kPlaintextSHA256), ec_key);
+
+  uint8_t ecdsa_r_bytes[sizeof(kECDSASigR)];
+  uint8_t ecdsa_s_bytes[sizeof(kECDSASigS)];
+  if (sig == NULL ||
+      BN_num_bytes(sig->r) != sizeof(ecdsa_r_bytes) ||
+      !BN_bn2bin(sig->r, ecdsa_r_bytes) ||
+      BN_num_bytes(sig->s) != sizeof(ecdsa_s_bytes) ||
+      !BN_bn2bin(sig->s, ecdsa_s_bytes) ||
+      !check_test(kECDSASigR, ecdsa_r_bytes, sizeof(kECDSASigR), "ECDSA R") ||
+      !check_test(kECDSASigS, ecdsa_s_bytes, sizeof(kECDSASigS), "ECDSA S")) {
+    fprintf(stderr, "ECDSA KAT failed.\n");
+    goto err;
+  }
+
+  // DBRG KAT
+  CTR_DRBG_STATE drbg;
+  if (!CTR_DRBG_init(&drbg, kDRBGEntropy, kDRBGPersonalization,
+                     sizeof(kDRBGPersonalization)) ||
+      !CTR_DRBG_generate(&drbg, output, sizeof(kDRBGOutput), kDRBGAD,
+                         sizeof(kDRBGAD)) ||
+      !check_test(kDRBGOutput, output, sizeof(kDRBGOutput),
+                  "DBRG Generate KAT") ||
+      !CTR_DRBG_reseed(&drbg, kDRBGEntropy2, kDRBGAD, sizeof(kDRBGAD)) ||
+      !CTR_DRBG_generate(&drbg, output, sizeof(kDRBGReseedOutput), kDRBGAD,
+                         sizeof(kDRBGAD)) ||
+      !check_test(kDRBGReseedOutput, output, sizeof(kDRBGReseedOutput),
+                  "DRBG Reseed KAT")) {
+    fprintf(stderr, "CTR-DRBG failed.\n");
+    goto err;
+  }
+  CTR_DRBG_clear(&drbg);
+
+  CTR_DRBG_STATE kZeroDRBG;
+  memset(&kZeroDRBG, 0, sizeof(kZeroDRBG));
+  if (!check_test(&kZeroDRBG, &drbg, sizeof(drbg), "DRBG Clear KAT")) {
+    goto err;
+  }
+
+  ret = 1;
+
+#if defined(BORINGSSL_FIPS_SELF_TEST_FLAG_FILE)
+  // Tests were successful. Write flag file if requested.
+  if (module_hash_len != 0 && getenv(kFlagWriteEnableEnvVar) != NULL) {
+    const int fd = open(flag_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+    if (fd >= 0) {
+      close(fd);
+    }
+  }
+#endif  // BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+
+err:
+  EVP_AEAD_CTX_cleanup(&aead_ctx);
+  RSA_free(rsa_key);
+  EC_KEY_free(ec_key);
+  ECDSA_SIG_free(sig);
+
+  return ret;
+}
+
+int BORINGSSL_self_test(void) {
+  return boringssl_fips_self_test(NULL, 0);
+}
+
+#endif  // !_MSC_VER
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c.grpc_back
new file mode 100644
index 0000000..d8a61c3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/self_check/self_check.c.grpc_back	
@@ -0,0 +1,654 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/crypto.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl/aead.h>
+#include <openssl/aes.h>
+#include <openssl/bn.h>
+#include <openssl/des.h>
+#include <openssl/ecdsa.h>
+#include <openssl/ec_key.h>
+#include <openssl/nid.h>
+#include <openssl/rsa.h>
+#include <openssl/sha.h>
+
+#include "../../internal.h"
+#include "../ec/internal.h"
+#include "../rand/internal.h"
+
+
+// MSVC wants to put a NUL byte at the end of non-char arrays and so cannot
+// compile this.
+#if !defined(_MSC_VER)
+
+#if defined(BORINGSSL_FIPS) && defined(OPENSSL_ANDROID)
+// FIPS builds on Android will test for flag files, named after the module hash,
+// in /dev/boringssl/selftest/. If such a flag file exists, it's assumed that
+// self-tests have already passed and thus do not need to be repeated. (The
+// integrity tests always run, however.)
+//
+// If self-tests complete successfully and the environment variable named in
+// |kFlagWriteEnableEnvVar| is present, then the flag file will be created. The
+// flag file isn't written without the environment variable being set in order
+// to avoid SELinux violations on Android.
+#define BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+static const char kFlagPrefix[] = "/dev/boringssl/selftest/";
+static const char kFlagWriteEnableEnvVar[] = "BORINGSSL_SELF_TEST_CREATE_FLAG";
+#endif
+
+static void hexdump(const uint8_t *in, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    fprintf(stderr, "%02x", in[i]);
+  }
+}
+
+static int check_test(const void *expected, const void *actual,
+                      size_t expected_len, const char *name) {
+  if (OPENSSL_memcmp(actual, expected, expected_len) != 0) {
+    fprintf(stderr, "%s failed.\nExpected: ", name);
+    hexdump(expected, expected_len);
+    fprintf(stderr, "\nCalculated: ");
+    hexdump(actual, expected_len);
+    fprintf(stderr, "\n");
+    fflush(stderr);
+    return 0;
+  }
+  return 1;
+}
+
+static int set_bignum(BIGNUM **out, const uint8_t *in, size_t len) {
+  *out = BN_bin2bn(in, len, NULL);
+  return *out != NULL;
+}
+
+static RSA *self_test_rsa_key(void) {
+  static const uint8_t kN[] = {
+      0xd3, 0x3a, 0x62, 0x9f, 0x07, 0x77, 0xb0, 0x18, 0xf3, 0xff, 0xfe, 0xcc,
+      0xc9, 0xa2, 0xc2, 0x3a, 0xa6, 0x1d, 0xd8, 0xf0, 0x26, 0x5b, 0x38, 0x90,
+      0x17, 0x48, 0x15, 0xce, 0x21, 0xcd, 0xd6, 0x62, 0x99, 0xe2, 0xd7, 0xda,
+      0x40, 0x80, 0x3c, 0xad, 0x18, 0xb7, 0x26, 0xe9, 0x30, 0x8a, 0x23, 0x3f,
+      0x68, 0x9a, 0x9c, 0x31, 0x34, 0x91, 0x99, 0x06, 0x11, 0x36, 0xb2, 0x9e,
+      0x3a, 0xd0, 0xbc, 0xb9, 0x93, 0x4e, 0xb8, 0x72, 0xa1, 0x9f, 0xb6, 0x8c,
+      0xd5, 0x17, 0x1f, 0x7e, 0xaa, 0x75, 0xbb, 0xdf, 0xa1, 0x70, 0x48, 0xc4,
+      0xec, 0x9a, 0x51, 0xed, 0x41, 0xc9, 0x74, 0xc0, 0x3e, 0x1e, 0x85, 0x2f,
+      0xbe, 0x34, 0xc7, 0x65, 0x34, 0x8b, 0x4d, 0x55, 0x4b, 0xe1, 0x45, 0x54,
+      0x0d, 0x75, 0x7e, 0x89, 0x4d, 0x0c, 0xf6, 0x33, 0xe5, 0xfc, 0xfb, 0x56,
+      0x1b, 0xf2, 0x39, 0x9d, 0xe0, 0xff, 0x55, 0xcf, 0x02, 0x05, 0xb9, 0x74,
+      0xd2, 0x91, 0xfc, 0x87, 0xe1, 0xbb, 0x97, 0x2a, 0xe4, 0xdd, 0x20, 0xc0,
+      0x38, 0x47, 0xc0, 0x76, 0x3f, 0xa1, 0x9b, 0x5c, 0x20, 0xff, 0xff, 0xc7,
+      0x49, 0x3b, 0x4c, 0xaf, 0x99, 0xa6, 0x3e, 0x82, 0x5c, 0x58, 0x27, 0xce,
+      0x01, 0x03, 0xc3, 0x16, 0x35, 0x20, 0xe9, 0xf0, 0x15, 0x7a, 0x41, 0xd5,
+      0x1f, 0x52, 0xea, 0xdf, 0xad, 0x4c, 0xbb, 0x0d, 0xcb, 0x04, 0x91, 0xb0,
+      0x95, 0xa8, 0xce, 0x25, 0xfd, 0xd2, 0x62, 0x47, 0x77, 0xee, 0x13, 0xf1,
+      0x48, 0x72, 0x9e, 0xd9, 0x2d, 0xe6, 0x5f, 0xa4, 0xc6, 0x9e, 0x5a, 0xb2,
+      0xc6, 0xa2, 0xf7, 0x0a, 0x16, 0x17, 0xae, 0x6b, 0x1c, 0x30, 0x7c, 0x63,
+      0x08, 0x83, 0xe7, 0x43, 0xec, 0x54, 0x5e, 0x2c, 0x08, 0x0b, 0x5e, 0x46,
+      0xa7, 0x10, 0x93, 0x43, 0x53, 0x4e, 0xe3, 0x16, 0x73, 0x55, 0xce, 0xf2,
+      0x94, 0xc0, 0xbe, 0xb3,
+  };
+  static const uint8_t kE[] = {0x01, 0x00, 0x01};  // 65537
+  static const uint8_t kD[] = {
+      0x2f, 0x2c, 0x1e, 0xd2, 0x3d, 0x2c, 0xb1, 0x9b, 0x21, 0x02, 0xce, 0xb8,
+      0x95, 0x5f, 0x4f, 0xd9, 0x21, 0x38, 0x11, 0x36, 0xb0, 0x9a, 0x36, 0xab,
+      0x97, 0x47, 0x75, 0xf7, 0x2e, 0xfd, 0x75, 0x1f, 0x58, 0x16, 0x9c, 0xf6,
+      0x14, 0xe9, 0x8e, 0xa3, 0x69, 0x9d, 0x9d, 0x86, 0xfe, 0x5c, 0x1b, 0x3b,
+      0x11, 0xf5, 0x55, 0x64, 0x77, 0xc4, 0xfc, 0x53, 0xaa, 0x8c, 0x78, 0x9f,
+      0x75, 0xab, 0x20, 0x3a, 0xa1, 0x77, 0x37, 0x22, 0x02, 0x8e, 0x54, 0x8a,
+      0x67, 0x1c, 0x5e, 0xe0, 0x3e, 0xd9, 0x44, 0x37, 0xd1, 0x29, 0xee, 0x56,
+      0x6c, 0x30, 0x9a, 0x93, 0x4d, 0xd9, 0xdb, 0xc5, 0x03, 0x1a, 0x75, 0xcc,
+      0x0f, 0xc2, 0x61, 0xb5, 0x6c, 0x62, 0x9f, 0xc6, 0xa8, 0xc7, 0x8a, 0x60,
+      0x17, 0x11, 0x62, 0x4c, 0xef, 0x74, 0x31, 0x97, 0xad, 0x89, 0x2d, 0xe8,
+      0x31, 0x1d, 0x8b, 0x58, 0x82, 0xe3, 0x03, 0x1a, 0x6b, 0xdf, 0x3f, 0x3e,
+      0xa4, 0x27, 0x19, 0xef, 0x46, 0x7a, 0x90, 0xdf, 0xa7, 0xe7, 0xc9, 0x66,
+      0xab, 0x41, 0x1d, 0x65, 0x78, 0x1c, 0x18, 0x40, 0x5c, 0xd6, 0x87, 0xb5,
+      0xea, 0x29, 0x44, 0xb3, 0xf5, 0xb3, 0xd2, 0x4f, 0xce, 0x88, 0x78, 0x49,
+      0x27, 0x4e, 0x0b, 0x30, 0x85, 0xfb, 0x73, 0xfd, 0x8b, 0x32, 0x15, 0xee,
+      0x1f, 0xc9, 0x0e, 0x89, 0xb9, 0x43, 0x2f, 0xe9, 0x60, 0x8d, 0xda, 0xae,
+      0x2b, 0x30, 0x99, 0xee, 0x88, 0x81, 0x20, 0x7b, 0x4a, 0xc3, 0x18, 0xf2,
+      0x94, 0x02, 0x79, 0x94, 0xaa, 0x65, 0xd9, 0x1b, 0x45, 0x2a, 0xac, 0x6e,
+      0x30, 0x48, 0x57, 0xea, 0xbe, 0x79, 0x7d, 0xfc, 0x67, 0xaa, 0x47, 0xc0,
+      0xf7, 0x52, 0xfd, 0x0b, 0x63, 0x4e, 0x3d, 0x2e, 0xcc, 0x36, 0xa0, 0xdb,
+      0x92, 0x0b, 0xa9, 0x1b, 0xeb, 0xc2, 0xd5, 0x08, 0xd3, 0x85, 0x87, 0xf8,
+      0x5d, 0x1a, 0xf6, 0xc1,
+  };
+  static const uint8_t kP[] = {
+      0xf7, 0x06, 0xa3, 0x98, 0x8a, 0x52, 0xf8, 0x63, 0x68, 0x27, 0x4f, 0x68,
+      0x7f, 0x34, 0xec, 0x8e, 0x5d, 0xf8, 0x30, 0x92, 0xb3, 0x62, 0x4c, 0xeb,
+      0xdb, 0x19, 0x6b, 0x09, 0xc5, 0xa3, 0xf0, 0xbb, 0xff, 0x0f, 0xc2, 0xd4,
+      0x9b, 0xc9, 0x54, 0x4f, 0xb9, 0xf9, 0xe1, 0x4c, 0xf0, 0xe3, 0x4c, 0x90,
+      0xda, 0x7a, 0x01, 0xc2, 0x9f, 0xc4, 0xc8, 0x8e, 0xb1, 0x1e, 0x93, 0x75,
+      0x75, 0xc6, 0x13, 0x25, 0xc3, 0xee, 0x3b, 0xcc, 0xb8, 0x72, 0x6c, 0x49,
+      0xb0, 0x09, 0xfb, 0xab, 0x44, 0xeb, 0x4d, 0x40, 0xf0, 0x61, 0x6b, 0xe5,
+      0xe6, 0xfe, 0x3e, 0x0a, 0x77, 0x26, 0x39, 0x76, 0x3d, 0x4c, 0x3e, 0x9b,
+      0x5b, 0xc0, 0xaf, 0xa2, 0x58, 0x76, 0xb0, 0xe9, 0xda, 0x7f, 0x0e, 0x78,
+      0xc9, 0x76, 0x49, 0x5c, 0xfa, 0xb3, 0xb0, 0x15, 0x4b, 0x41, 0xc7, 0x27,
+      0xa4, 0x75, 0x28, 0x5c, 0x30, 0x69, 0x50, 0x29,
+  };
+  static const uint8_t kQ[] = {
+      0xda, 0xe6, 0xd2, 0xbb, 0x44, 0xff, 0x4f, 0xdf, 0x57, 0xc1, 0x11, 0xa3,
+      0x51, 0xba, 0x17, 0x89, 0x4c, 0x01, 0xc0, 0x0c, 0x97, 0x34, 0x50, 0xcf,
+      0x32, 0x1e, 0xc0, 0xbd, 0x7b, 0x35, 0xb5, 0x6a, 0x26, 0xcc, 0xea, 0x4c,
+      0x8e, 0x87, 0x4a, 0x67, 0x8b, 0xd3, 0xe5, 0x4f, 0x3a, 0x60, 0x48, 0x59,
+      0x04, 0x93, 0x39, 0xd7, 0x7c, 0xfb, 0x19, 0x1a, 0x34, 0xd5, 0xe8, 0xaf,
+      0xe7, 0x22, 0x2c, 0x0d, 0xc2, 0x91, 0x69, 0xb6, 0xe9, 0x2a, 0xe9, 0x1c,
+      0x4c, 0x6e, 0x8f, 0x40, 0xf5, 0xa8, 0x3e, 0x82, 0x69, 0x69, 0xbe, 0x9f,
+      0x7d, 0x5c, 0x7f, 0x92, 0x78, 0x17, 0xa3, 0x6d, 0x41, 0x2d, 0x72, 0xed,
+      0x3f, 0x71, 0xfa, 0x97, 0xb4, 0x63, 0xe4, 0x4f, 0xd9, 0x46, 0x03, 0xfb,
+      0x00, 0xeb, 0x30, 0x70, 0xb9, 0x51, 0xd9, 0x0a, 0xd2, 0xf8, 0x50, 0xd4,
+      0xfb, 0x43, 0x84, 0xf8, 0xac, 0x58, 0xc3, 0x7b,
+  };
+  static const uint8_t kDModPMinusOne[] = {
+      0xf5, 0x50, 0x8f, 0x88, 0x7d, 0xdd, 0xb5, 0xb4, 0x2a, 0x8b, 0xd7, 0x4d,
+      0x23, 0xfe, 0xaf, 0xe9, 0x16, 0x22, 0xd2, 0x41, 0xed, 0x88, 0xf2, 0x70,
+      0xcb, 0x4d, 0xeb, 0xc1, 0x71, 0x97, 0xc4, 0x0b, 0x3e, 0x5a, 0x2d, 0x96,
+      0xab, 0xfa, 0xfd, 0x12, 0x8b, 0xd3, 0x3e, 0x4e, 0x05, 0x6f, 0x04, 0xeb,
+      0x59, 0x3c, 0x0e, 0xa1, 0x73, 0xbe, 0x9d, 0x99, 0x2f, 0x05, 0xf9, 0x54,
+      0x8d, 0x98, 0x1e, 0x0d, 0xc4, 0x0c, 0xc3, 0x30, 0x23, 0xff, 0xe5, 0xd0,
+      0x2b, 0xd5, 0x4e, 0x2b, 0xa0, 0xae, 0xb8, 0x32, 0x84, 0x45, 0x8b, 0x3c,
+      0x6d, 0xf0, 0x10, 0x36, 0x9e, 0x6a, 0xc4, 0x67, 0xca, 0xa9, 0xfc, 0x06,
+      0x96, 0xd0, 0xbc, 0xda, 0xd1, 0x55, 0x55, 0x8d, 0x77, 0x21, 0xf4, 0x82,
+      0x39, 0x37, 0x91, 0xd5, 0x97, 0x56, 0x78, 0xc8, 0x3c, 0xcb, 0x5e, 0xf6,
+      0xdc, 0x58, 0x48, 0xb3, 0x7c, 0x94, 0x29, 0x39,
+  };
+  static const uint8_t kDModQMinusOne[] = {
+      0x64, 0x65, 0xbd, 0x7d, 0x1a, 0x96, 0x26, 0xa1, 0xfe, 0xf3, 0x94, 0x0d,
+      0x5d, 0xec, 0x85, 0xe2, 0xf8, 0xb3, 0x4c, 0xcb, 0xf9, 0x85, 0x8b, 0x12,
+      0x9c, 0xa0, 0x32, 0x32, 0x35, 0x92, 0x5a, 0x94, 0x47, 0x1b, 0x70, 0xd2,
+      0x90, 0x04, 0x49, 0x01, 0xd8, 0xc5, 0xe4, 0xc4, 0x43, 0xb7, 0xe9, 0x36,
+      0xba, 0xbc, 0x73, 0xa8, 0xfb, 0xaf, 0x86, 0xc1, 0xd8, 0x3d, 0xcb, 0xac,
+      0xf1, 0xcb, 0x60, 0x7d, 0x27, 0x21, 0xde, 0x64, 0x7f, 0xe8, 0xa8, 0x65,
+      0xcc, 0x40, 0x60, 0xff, 0xa0, 0x2b, 0xfc, 0x0f, 0x80, 0x1d, 0x79, 0xca,
+      0x58, 0x8a, 0xd6, 0x0f, 0xed, 0x78, 0x9a, 0x02, 0x00, 0x04, 0xc2, 0x53,
+      0x41, 0xe8, 0x1a, 0xd0, 0xfd, 0x71, 0x5b, 0x43, 0xac, 0x19, 0x4a, 0xb6,
+      0x12, 0xa3, 0xcb, 0xe1, 0xc7, 0x7d, 0x5c, 0x98, 0x74, 0x4e, 0x63, 0x74,
+      0x6b, 0x91, 0x7a, 0x29, 0x3b, 0x92, 0xb2, 0x85,
+  };
+  static const uint8_t kQInverseModP[] = {
+      0xd0, 0xde, 0x19, 0xda, 0x1e, 0xa2, 0xd8, 0x8f, 0x1c, 0x92, 0x73, 0xb0,
+      0xc9, 0x90, 0xc7, 0xf5, 0xec, 0xc5, 0x89, 0x01, 0x05, 0x78, 0x11, 0x2d,
+      0x74, 0x34, 0x44, 0xad, 0xd5, 0xf7, 0xa4, 0xfe, 0x9f, 0x25, 0x4d, 0x0b,
+      0x92, 0xe3, 0xb8, 0x7d, 0xd3, 0xfd, 0xa5, 0xca, 0x95, 0x60, 0xa3, 0xf9,
+      0x55, 0x42, 0x14, 0xb2, 0x45, 0x51, 0x9f, 0x73, 0x88, 0x43, 0x8a, 0xd1,
+      0x65, 0x9e, 0xd1, 0xf7, 0x82, 0x2a, 0x2a, 0x8d, 0x70, 0x56, 0xe3, 0xef,
+      0xc9, 0x0e, 0x2a, 0x2c, 0x15, 0xaf, 0x7f, 0x97, 0x81, 0x66, 0xf3, 0xb5,
+      0x00, 0xa9, 0x26, 0xcc, 0x1e, 0xc2, 0x98, 0xdd, 0xd3, 0x37, 0x06, 0x79,
+      0xb3, 0x60, 0x58, 0x79, 0x99, 0x3f, 0xa3, 0x15, 0x1f, 0x31, 0xe3, 0x11,
+      0x88, 0x4c, 0x35, 0x57, 0xfa, 0x79, 0xd7, 0xd8, 0x72, 0xee, 0x73, 0x95,
+      0x89, 0x29, 0xc7, 0x05, 0x27, 0x68, 0x90, 0x15,
+  };
+
+  RSA *rsa = RSA_new();
+  if (rsa == NULL ||
+      !set_bignum(&rsa->n, kN, sizeof(kN)) ||
+      !set_bignum(&rsa->e, kE, sizeof(kE)) ||
+      !set_bignum(&rsa->d, kD, sizeof(kD)) ||
+      !set_bignum(&rsa->p, kP, sizeof(kP)) ||
+      !set_bignum(&rsa->q, kQ, sizeof(kQ)) ||
+      !set_bignum(&rsa->dmp1, kDModPMinusOne, sizeof(kDModPMinusOne)) ||
+      !set_bignum(&rsa->dmq1, kDModQMinusOne, sizeof(kDModQMinusOne)) ||
+      !set_bignum(&rsa->iqmp, kQInverseModP, sizeof(kQInverseModP))) {
+    RSA_free(rsa);
+    return NULL;
+  }
+
+  return rsa;
+}
+
+static EC_KEY *self_test_ecdsa_key(void) {
+  static const uint8_t kQx[] = {
+      0xc8, 0x15, 0x61, 0xec, 0xf2, 0xe5, 0x4e, 0xde, 0xfe, 0x66, 0x17,
+      0xdb, 0x1c, 0x7a, 0x34, 0xa7, 0x07, 0x44, 0xdd, 0xb2, 0x61, 0xf2,
+      0x69, 0xb8, 0x3d, 0xac, 0xfc, 0xd2, 0xad, 0xe5, 0xa6, 0x81,
+  };
+  static const uint8_t kQy[] = {
+      0xe0, 0xe2, 0xaf, 0xa3, 0xf9, 0xb6, 0xab, 0xe4, 0xc6, 0x98, 0xef,
+      0x64, 0x95, 0xf1, 0xbe, 0x49, 0xa3, 0x19, 0x6c, 0x50, 0x56, 0xac,
+      0xb3, 0x76, 0x3f, 0xe4, 0x50, 0x7e, 0xec, 0x59, 0x6e, 0x88,
+  };
+  static const uint8_t kD[] = {
+      0xc6, 0xc1, 0xaa, 0xda, 0x15, 0xb0, 0x76, 0x61, 0xf8, 0x14, 0x2c,
+      0x6c, 0xaf, 0x0f, 0xdb, 0x24, 0x1a, 0xff, 0x2e, 0xfe, 0x46, 0xc0,
+      0x93, 0x8b, 0x74, 0xf2, 0xbc, 0xc5, 0x30, 0x52, 0xb0, 0x77,
+  };
+
+  EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+  BIGNUM *qx = BN_bin2bn(kQx, sizeof(kQx), NULL);
+  BIGNUM *qy = BN_bin2bn(kQy, sizeof(kQy), NULL);
+  BIGNUM *d = BN_bin2bn(kD, sizeof(kD), NULL);
+  if (ec_key == NULL || qx == NULL || qy == NULL || d == NULL ||
+      !EC_KEY_set_public_key_affine_coordinates(ec_key, qx, qy) ||
+      !EC_KEY_set_private_key(ec_key, d)) {
+    EC_KEY_free(ec_key);
+    ec_key = NULL;
+  }
+
+  BN_free(qx);
+  BN_free(qy);
+  BN_free(d);
+  return ec_key;
+}
+
+#if defined(OPENSSL_ANDROID)
+static const size_t kModuleDigestSize = SHA256_DIGEST_LENGTH;
+#else
+static const size_t kModuleDigestSize = SHA512_DIGEST_LENGTH;
+#endif
+
+int boringssl_fips_self_test(
+    const uint8_t *module_hash, size_t module_hash_len) {
+#if defined(BORINGSSL_FIPS_SELF_TEST_FLAG_FILE)
+  char flag_path[sizeof(kFlagPrefix) + 2*kModuleDigestSize];
+  if (module_hash_len != 0) {
+    if (module_hash_len != kModuleDigestSize) {
+      fprintf(stderr,
+              "module hash of length %zu does not match expected length %zu\n",
+              module_hash_len, kModuleDigestSize);
+      BORINGSSL_FIPS_abort();
+    }
+
+    // Test whether the flag file exists.
+    memcpy(flag_path, kFlagPrefix, sizeof(kFlagPrefix) - 1);
+    static const char kHexTable[17] = "0123456789abcdef";
+    for (size_t i = 0; i < kModuleDigestSize; i++) {
+      flag_path[sizeof(kFlagPrefix) - 1 + 2 * i] =
+          kHexTable[module_hash[i] >> 4];
+      flag_path[sizeof(kFlagPrefix) - 1 + 2 * i + 1] =
+          kHexTable[module_hash[i] & 15];
+    }
+    flag_path[sizeof(flag_path) - 1] = 0;
+
+    if (access(flag_path, F_OK) == 0) {
+      // Flag file found. Skip self-tests.
+      return 1;
+    }
+  }
+#endif // BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+
+  static const uint8_t kAESKey[16] = "BoringCrypto Key";
+  static const uint8_t kAESIV[16] = {0};
+  static const uint8_t kPlaintext[64] =
+      "BoringCryptoModule FIPS KAT Encryption and Decryption Plaintext!";
+  static const uint8_t kAESCBCCiphertext[64] = {
+      0x87, 0x2d, 0x98, 0xc2, 0xcc, 0x31, 0x5b, 0x41, 0xe0, 0xfa, 0x7b,
+      0x0a, 0x71, 0xc0, 0x42, 0xbf, 0x4f, 0x61, 0xd0, 0x0d, 0x58, 0x8c,
+      0xf7, 0x05, 0xfb, 0x94, 0x89, 0xd3, 0xbc, 0xaa, 0x1a, 0x50, 0x45,
+      0x1f, 0xc3, 0x8c, 0xb8, 0x98, 0x86, 0xa3, 0xe3, 0x6c, 0xfc, 0xad,
+      0x3a, 0xb5, 0x59, 0x27, 0x7d, 0x21, 0x07, 0xca, 0x4c, 0x1d, 0x55,
+      0x34, 0xdd, 0x5a, 0x2d, 0xc4, 0xb4, 0xf5, 0xa8,
+#if !defined(BORINGSSL_FIPS_BREAK_AES_CBC)
+      0x35
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kAESGCMCiphertext[80] = {
+      0x4a, 0xd8, 0xe7, 0x7d, 0x78, 0xd7, 0x7d, 0x5e, 0xb2, 0x11, 0xb6, 0xc9,
+      0xa4, 0xbc, 0xb2, 0xae, 0xbe, 0x93, 0xd1, 0xb7, 0xfe, 0x65, 0xc1, 0x82,
+      0x2a, 0xb6, 0x71, 0x5f, 0x1a, 0x7c, 0xe0, 0x1b, 0x2b, 0xe2, 0x53, 0xfa,
+      0xa0, 0x47, 0xfa, 0xd7, 0x8f, 0xb1, 0x4a, 0xc4, 0xdc, 0x89, 0xf9, 0xb4,
+      0x14, 0x4d, 0xde, 0x95, 0xea, 0x29, 0x69, 0x76, 0x81, 0xa3, 0x5c, 0x33,
+      0xd8, 0x37, 0xd8, 0xfa, 0x47, 0x19, 0x46, 0x2f, 0xf1, 0x90, 0xb7, 0x61,
+      0x8f, 0x6f, 0xdd, 0x31, 0x3f, 0x6a, 0x64,
+#if !defined(BORINGSSL_FIPS_BREAK_AES_GCM)
+      0x0d
+#else
+      0x00
+#endif
+  };
+  static const DES_cblock kDESKey1 = {"BCMDESK1"};
+  static const DES_cblock kDESKey2 = {"BCMDESK2"};
+  static const DES_cblock kDESKey3 = {"BCMDESK3"};
+  static const DES_cblock kDESIV = {"BCMDESIV"};
+  static const uint8_t kDESCiphertext[64] = {
+      0xa4, 0x30, 0x7a, 0x4c, 0x1f, 0x60, 0x16, 0xd7, 0x4f, 0x41, 0xe1,
+      0xbb, 0x27, 0xc4, 0x27, 0x37, 0xd4, 0x7f, 0xb9, 0x10, 0xf8, 0xbc,
+      0xaf, 0x93, 0x91, 0xb8, 0x88, 0x24, 0xb1, 0xf6, 0xf8, 0xbd, 0x31,
+      0x96, 0x06, 0x76, 0xde, 0x32, 0xcd, 0x29, 0x29, 0xba, 0x70, 0x5f,
+      0xea, 0xc0, 0xcb, 0xde, 0xc7, 0x75, 0x90, 0xe0, 0x0f, 0x5e, 0x2c,
+      0x0d, 0x49, 0x20, 0xd5, 0x30, 0x83, 0xf8, 0x08,
+#if !defined(BORINGSSL_FIPS_BREAK_DES)
+      0x5a
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA1[20] = {
+      0xc6, 0xf8, 0xc9, 0x63, 0x1c, 0x14, 0x23, 0x62, 0x9b, 0xbd,
+      0x55, 0x82, 0xf4, 0xd6, 0x1d, 0xf2, 0xab, 0x7d, 0xc8,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_1)
+      0x28
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA256[32] = {
+      0x37, 0xbd, 0x70, 0x53, 0x72, 0xfc, 0xd4, 0x03, 0x79, 0x70, 0xfb,
+      0x06, 0x95, 0xb1, 0x2a, 0x82, 0x48, 0xe1, 0x3e, 0xf2, 0x33, 0xfb,
+      0xef, 0x29, 0x81, 0x22, 0x45, 0x40, 0x43, 0x70, 0xce,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_256)
+      0x0f
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kPlaintextSHA512[64] = {
+      0x08, 0x6a, 0x1c, 0x84, 0x61, 0x9d, 0x8e, 0xb3, 0xc0, 0x97, 0x4e,
+      0xa1, 0x9f, 0x9c, 0xdc, 0xaf, 0x3b, 0x5c, 0x31, 0xf0, 0xf2, 0x74,
+      0xc3, 0xbd, 0x6e, 0xd6, 0x1e, 0xb2, 0xbb, 0x34, 0x74, 0x72, 0x5c,
+      0x51, 0x29, 0x8b, 0x87, 0x3a, 0xa3, 0xf2, 0x25, 0x23, 0xd4, 0x1c,
+      0x82, 0x1b, 0xfe, 0xd3, 0xc6, 0xee, 0xb5, 0xd6, 0xaf, 0x07, 0x7b,
+      0x98, 0xca, 0xa7, 0x01, 0xf3, 0x94, 0xf3, 0x68,
+#if !defined(BORINGSSL_FIPS_BREAK_SHA_512)
+      0x14
+#else
+      0x00
+#endif
+  };
+  static const uint8_t kRSASignature[256] = {
+      0x62, 0x66, 0x4b, 0xe3, 0xb1, 0xd2, 0x83, 0xf1, 0xa8, 0x56, 0x2b, 0x33,
+      0x60, 0x1e, 0xdb, 0x1e, 0x06, 0xf7, 0xa7, 0x1e, 0xa8, 0xef, 0x03, 0x4d,
+      0x0c, 0xf6, 0x83, 0x75, 0x7a, 0xf0, 0x14, 0xc7, 0xe2, 0x94, 0x3a, 0xb5,
+      0x67, 0x56, 0xa5, 0x48, 0x7f, 0x3a, 0xa5, 0xbf, 0xf7, 0x1d, 0x44, 0xa6,
+      0x34, 0xed, 0x9b, 0xd6, 0x51, 0xaa, 0x2c, 0x4e, 0xce, 0x60, 0x5f, 0xe9,
+      0x0e, 0xd5, 0xcd, 0xeb, 0x23, 0x27, 0xf8, 0xfb, 0x45, 0xe5, 0x34, 0x63,
+      0x77, 0x7f, 0x2e, 0x80, 0xcf, 0x9d, 0x2e, 0xfc, 0xe2, 0x50, 0x75, 0x29,
+      0x46, 0xf4, 0xaf, 0x91, 0xed, 0x36, 0xe1, 0x5e, 0xef, 0x66, 0xa1, 0xff,
+      0x27, 0xfc, 0x87, 0x7e, 0x60, 0x84, 0x0f, 0x54, 0x51, 0x56, 0x0f, 0x68,
+      0x99, 0xc0, 0x3f, 0xeb, 0xa5, 0xa0, 0x46, 0xb0, 0x86, 0x02, 0xb0, 0xc8,
+      0xe8, 0x46, 0x13, 0x06, 0xcd, 0xb7, 0x8a, 0xd0, 0x3b, 0x46, 0xd0, 0x14,
+      0x64, 0x53, 0x9b, 0x5b, 0x5e, 0x02, 0x45, 0xba, 0x6e, 0x7e, 0x0a, 0xb9,
+      0x9e, 0x62, 0xb7, 0xd5, 0x7a, 0x87, 0xea, 0xd3, 0x24, 0xa5, 0xef, 0xb3,
+      0xdc, 0x05, 0x9c, 0x04, 0x60, 0x4b, 0xde, 0xa8, 0x90, 0x08, 0x7b, 0x6a,
+      0x5f, 0xb4, 0x3f, 0xda, 0xc5, 0x1f, 0x6e, 0xd6, 0x15, 0xde, 0x65, 0xa4,
+      0x6e, 0x62, 0x9d, 0x8f, 0xa8, 0xbe, 0x86, 0xf6, 0x09, 0x90, 0x40, 0xa5,
+      0xf4, 0x23, 0xc5, 0xf6, 0x38, 0x86, 0x0d, 0x1c, 0xed, 0x4a, 0x0a, 0xae,
+      0xa4, 0x26, 0xc2, 0x2e, 0xd3, 0x13, 0x66, 0x61, 0xea, 0x35, 0x01, 0x0e,
+      0x13, 0xda, 0x78, 0x20, 0xae, 0x59, 0x5f, 0x9b, 0xa9, 0x6c, 0xf9, 0x1b,
+      0xdf, 0x76, 0x53, 0xc8, 0xa7, 0xf5, 0x63, 0x6d, 0xf3, 0xff, 0xfd, 0xaf,
+      0x75, 0x4b, 0xac, 0x67, 0xb1, 0x3c, 0xbf, 0x5e, 0xde, 0x73, 0x02, 0x6d,
+      0xd2, 0x0c, 0xb1,
+#if !defined(BORINGSSL_FIPS_BREAK_RSA_SIG)
+      0x64
+#else
+      0x00
+#endif
+  };
+  const uint8_t kDRBGEntropy[48] =
+      "BCM Known Answer Test DBRG Initial Entropy      ";
+  const uint8_t kDRBGPersonalization[18] = "BCMPersonalization";
+  const uint8_t kDRBGAD[16] = "BCM DRBG KAT AD ";
+  const uint8_t kDRBGOutput[64] = {
+      0x1d, 0x63, 0xdf, 0x05, 0x51, 0x49, 0x22, 0x46, 0xcd, 0x9b, 0xc5,
+      0xbb, 0xf1, 0x5d, 0x44, 0xae, 0x13, 0x78, 0xb1, 0xe4, 0x7c, 0xf1,
+      0x96, 0x33, 0x3d, 0x60, 0xb6, 0x29, 0xd4, 0xbb, 0x6b, 0x44, 0xf9,
+      0xef, 0xd9, 0xf4, 0xa2, 0xba, 0x48, 0xea, 0x39, 0x75, 0x59, 0x32,
+      0xf7, 0x31, 0x2c, 0x98, 0x14, 0x2b, 0x49, 0xdf, 0x02, 0xb6, 0x5d,
+      0x71, 0x09, 0x50, 0xdb, 0x23, 0xdb, 0xe5, 0x22,
+#if !defined(BORINGSSL_FIPS_BREAK_DRBG)
+      0x95
+#else
+      0x00
+#endif
+  };
+  const uint8_t kDRBGEntropy2[48] =
+      "BCM Known Answer Test DBRG Reseed Entropy       ";
+  const uint8_t kDRBGReseedOutput[64] = {
+      0xa4, 0x77, 0x05, 0xdb, 0x14, 0x11, 0x76, 0x71, 0x42, 0x5b, 0xd8,
+      0xd7, 0xa5, 0x4f, 0x8b, 0x39, 0xf2, 0x10, 0x4a, 0x50, 0x5b, 0xa2,
+      0xc8, 0xf0, 0xbb, 0x3e, 0xa1, 0xa5, 0x90, 0x7d, 0x54, 0xd9, 0xc6,
+      0xb0, 0x96, 0xc0, 0x2b, 0x7e, 0x9b, 0xc9, 0xa1, 0xdd, 0x78, 0x2e,
+      0xd5, 0xa8, 0x66, 0x16, 0xbd, 0x18, 0x3c, 0xf2, 0xaa, 0x7a, 0x2b,
+      0x37, 0xf9, 0xab, 0x35, 0x64, 0x15, 0x01, 0x3f, 0xc4,
+  };
+  const uint8_t kECDSASigR[32] = {
+      0x67, 0x80, 0xc5, 0xfc, 0x70, 0x27, 0x5e, 0x2c, 0x70, 0x61, 0xa0,
+      0xe7, 0x87, 0x7b, 0xb1, 0x74, 0xde, 0xad, 0xeb, 0x98, 0x87, 0x02,
+      0x7f, 0x3f, 0xa8, 0x36, 0x54, 0x15, 0x8b, 0xa7, 0xf5,
+#if !defined(BORINGSSL_FIPS_BREAK_ECDSA_SIG)
+      0x0c,
+#else
+      0x00,
+#endif
+  };
+  const uint8_t kECDSASigS[32] = {
+      0xa5, 0x93, 0xe0, 0x23, 0x91, 0xe7, 0x4b, 0x8d, 0x77, 0x25, 0xa6,
+      0xba, 0x4d, 0xd9, 0x86, 0x77, 0xda, 0x7d, 0x8f, 0xef, 0xc4, 0x1a,
+      0xf0, 0xcc, 0x81, 0xe5, 0xea, 0x3f, 0xc2, 0x41, 0x7f, 0xd8,
+  };
+
+  EVP_AEAD_CTX aead_ctx;
+  EVP_AEAD_CTX_zero(&aead_ctx);
+  RSA *rsa_key = NULL;
+  EC_KEY *ec_key = NULL;
+  ECDSA_SIG *sig = NULL;
+  int ret = 0;
+
+  AES_KEY aes_key;
+  uint8_t aes_iv[16];
+  uint8_t output[256];
+
+  // AES-CBC Encryption KAT
+  memcpy(aes_iv, kAESIV, sizeof(kAESIV));
+  if (AES_set_encrypt_key(kAESKey, 8 * sizeof(kAESKey), &aes_key) != 0) {
+    fprintf(stderr, "AES_set_encrypt_key failed.\n");
+    goto err;
+  }
+  AES_cbc_encrypt(kPlaintext, output, sizeof(kPlaintext), &aes_key, aes_iv,
+                  AES_ENCRYPT);
+  if (!check_test(kAESCBCCiphertext, output, sizeof(kAESCBCCiphertext),
+                  "AES-CBC Encryption KAT")) {
+    goto err;
+  }
+
+  // AES-CBC Decryption KAT
+  memcpy(aes_iv, kAESIV, sizeof(kAESIV));
+  if (AES_set_decrypt_key(kAESKey, 8 * sizeof(kAESKey), &aes_key) != 0) {
+    fprintf(stderr, "AES_set_decrypt_key failed.\n");
+    goto err;
+  }
+  AES_cbc_encrypt(kAESCBCCiphertext, output, sizeof(kAESCBCCiphertext),
+                  &aes_key, aes_iv, AES_DECRYPT);
+  if (!check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "AES-CBC Decryption KAT")) {
+    goto err;
+  }
+
+  size_t out_len;
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  OPENSSL_memset(nonce, 0, sizeof(nonce));
+  if (!EVP_AEAD_CTX_init(&aead_ctx, EVP_aead_aes_128_gcm(), kAESKey,
+                         sizeof(kAESKey), 0, NULL)) {
+    fprintf(stderr, "EVP_AEAD_CTX_init for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  // AES-GCM Encryption KAT
+  if (!EVP_AEAD_CTX_seal(&aead_ctx, output, &out_len, sizeof(output), nonce,
+                         EVP_AEAD_nonce_length(EVP_aead_aes_128_gcm()),
+                         kPlaintext, sizeof(kPlaintext), NULL, 0) ||
+      !check_test(kAESGCMCiphertext, output, sizeof(kAESGCMCiphertext),
+                  "AES-GCM Encryption KAT")) {
+    fprintf(stderr, "EVP_AEAD_CTX_seal for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  // AES-GCM Decryption KAT
+  if (!EVP_AEAD_CTX_open(&aead_ctx, output, &out_len, sizeof(output), nonce,
+                         EVP_AEAD_nonce_length(EVP_aead_aes_128_gcm()),
+                         kAESGCMCiphertext, sizeof(kAESGCMCiphertext), NULL,
+                         0) ||
+      !check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "AES-GCM Decryption KAT")) {
+    fprintf(stderr, "EVP_AEAD_CTX_open for AES-128-GCM failed.\n");
+    goto err;
+  }
+
+  DES_key_schedule des1, des2, des3;
+  DES_cblock des_iv;
+  DES_set_key(&kDESKey1, &des1);
+  DES_set_key(&kDESKey2, &des2);
+  DES_set_key(&kDESKey3, &des3);
+
+  // 3DES Encryption KAT
+  memcpy(&des_iv, &kDESIV, sizeof(des_iv));
+  DES_ede3_cbc_encrypt(kPlaintext, output, sizeof(kPlaintext), &des1, &des2,
+                       &des3, &des_iv, DES_ENCRYPT);
+  if (!check_test(kDESCiphertext, output, sizeof(kDESCiphertext),
+                  "3DES Encryption KAT")) {
+    goto err;
+  }
+
+  // 3DES Decryption KAT
+  memcpy(&des_iv, &kDESIV, sizeof(des_iv));
+  DES_ede3_cbc_encrypt(kDESCiphertext, output, sizeof(kDESCiphertext), &des1,
+                       &des2, &des3, &des_iv, DES_DECRYPT);
+  if (!check_test(kPlaintext, output, sizeof(kPlaintext),
+                  "3DES Decryption KAT")) {
+    goto err;
+  }
+
+  // SHA-1 KAT
+  SHA1(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA1, output, sizeof(kPlaintextSHA1),
+                  "SHA-1 KAT")) {
+    goto err;
+  }
+
+  // SHA-256 KAT
+  SHA256(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA256, output, sizeof(kPlaintextSHA256),
+                  "SHA-256 KAT")) {
+    goto err;
+  }
+
+  // SHA-512 KAT
+  SHA512(kPlaintext, sizeof(kPlaintext), output);
+  if (!check_test(kPlaintextSHA512, output, sizeof(kPlaintextSHA512),
+                  "SHA-512 KAT")) {
+    goto err;
+  }
+
+  rsa_key = self_test_rsa_key();
+  if (rsa_key == NULL) {
+    fprintf(stderr, "RSA KeyGen failed\n");
+    goto err;
+  }
+
+  // RSA Sign KAT
+  unsigned sig_len;
+
+  // Disable blinding for the power-on tests because it's not needed and
+  // triggers an entropy draw.
+  rsa_key->flags |= RSA_FLAG_NO_BLINDING;
+
+  if (!RSA_sign(NID_sha256, kPlaintextSHA256, sizeof(kPlaintextSHA256), output,
+                &sig_len, rsa_key) ||
+      !check_test(kRSASignature, output, sizeof(kRSASignature),
+                  "RSA Sign KAT")) {
+    fprintf(stderr, "RSA signing test failed.\n");
+    goto err;
+  }
+
+  // RSA Verify KAT
+  if (!RSA_verify(NID_sha256, kPlaintextSHA256, sizeof(kPlaintextSHA256),
+                  kRSASignature, sizeof(kRSASignature), rsa_key)) {
+    fprintf(stderr, "RSA Verify KAT failed.\n");
+    goto err;
+  }
+
+  ec_key = self_test_ecdsa_key();
+  if (ec_key == NULL) {
+    fprintf(stderr, "ECDSA KeyGen failed\n");
+    goto err;
+  }
+
+  // ECDSA Sign/Verify PWCT
+
+  // The 'k' value for ECDSA is fixed to avoid an entropy draw.
+  ec_key->fixed_k = BN_new();
+  if (ec_key->fixed_k == NULL ||
+      !BN_set_word(ec_key->fixed_k, 42)) {
+    fprintf(stderr, "Out of memory\n");
+    goto err;
+  }
+
+  sig = ECDSA_do_sign(kPlaintextSHA256, sizeof(kPlaintextSHA256), ec_key);
+
+  uint8_t ecdsa_r_bytes[sizeof(kECDSASigR)];
+  uint8_t ecdsa_s_bytes[sizeof(kECDSASigS)];
+  if (sig == NULL ||
+      BN_num_bytes(sig->r) != sizeof(ecdsa_r_bytes) ||
+      !BN_bn2bin(sig->r, ecdsa_r_bytes) ||
+      BN_num_bytes(sig->s) != sizeof(ecdsa_s_bytes) ||
+      !BN_bn2bin(sig->s, ecdsa_s_bytes) ||
+      !check_test(kECDSASigR, ecdsa_r_bytes, sizeof(kECDSASigR), "ECDSA R") ||
+      !check_test(kECDSASigS, ecdsa_s_bytes, sizeof(kECDSASigS), "ECDSA S")) {
+    fprintf(stderr, "ECDSA KAT failed.\n");
+    goto err;
+  }
+
+  // DBRG KAT
+  CTR_DRBG_STATE drbg;
+  if (!CTR_DRBG_init(&drbg, kDRBGEntropy, kDRBGPersonalization,
+                     sizeof(kDRBGPersonalization)) ||
+      !CTR_DRBG_generate(&drbg, output, sizeof(kDRBGOutput), kDRBGAD,
+                         sizeof(kDRBGAD)) ||
+      !check_test(kDRBGOutput, output, sizeof(kDRBGOutput),
+                  "DBRG Generate KAT") ||
+      !CTR_DRBG_reseed(&drbg, kDRBGEntropy2, kDRBGAD, sizeof(kDRBGAD)) ||
+      !CTR_DRBG_generate(&drbg, output, sizeof(kDRBGReseedOutput), kDRBGAD,
+                         sizeof(kDRBGAD)) ||
+      !check_test(kDRBGReseedOutput, output, sizeof(kDRBGReseedOutput),
+                  "DRBG Reseed KAT")) {
+    fprintf(stderr, "CTR-DRBG failed.\n");
+    goto err;
+  }
+  CTR_DRBG_clear(&drbg);
+
+  CTR_DRBG_STATE kZeroDRBG;
+  memset(&kZeroDRBG, 0, sizeof(kZeroDRBG));
+  if (!check_test(&kZeroDRBG, &drbg, sizeof(drbg), "DRBG Clear KAT")) {
+    goto err;
+  }
+
+  ret = 1;
+
+#if defined(BORINGSSL_FIPS_SELF_TEST_FLAG_FILE)
+  // Tests were successful. Write flag file if requested.
+  if (module_hash_len != 0 && getenv(kFlagWriteEnableEnvVar) != NULL) {
+    const int fd = open(flag_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+    if (fd >= 0) {
+      close(fd);
+    }
+  }
+#endif  // BORINGSSL_FIPS_SELF_TEST_FLAG_FILE
+
+err:
+  EVP_AEAD_CTX_cleanup(&aead_ctx);
+  RSA_free(rsa_key);
+  EC_KEY_free(ec_key);
+  ECDSA_SIG_free(sig);
+
+  return ret;
+}
+
+int BORINGSSL_self_test(void) {
+  return boringssl_fips_self_test(NULL, 0);
+}
+
+#endif  // !_MSC_VER
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h
new file mode 100644
index 0000000..9891ddf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SHA_INTERNAL_H
+#define OPENSSL_HEADER_SHA_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(OPENSSL_PPC64LE) ||                          \
+    (!defined(OPENSSL_NO_ASM) &&                         \
+     (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+      defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)))
+// POWER has an intrinsics-based implementation of SHA-1 and thus the functions
+// normally defined in assembly are available even with |OPENSSL_NO_ASM| in
+// this case.
+#define SHA1_ASM
+void sha1_block_data_order(uint32_t *state, const uint8_t *in,
+                           size_t num_blocks);
+#endif
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define SHA256_ASM
+#define SHA512_ASM
+void sha256_block_data_order(uint32_t *state, const uint8_t *in,
+                             size_t num_blocks);
+void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                             size_t num_blocks);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_SHA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h.grpc_back
new file mode 100644
index 0000000..cc90914
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/internal.h.grpc_back	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SHA_INTERNAL_H
+#define OPENSSL_HEADER_SHA_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(OPENSSL_PPC64LE) ||                          \
+    (!defined(OPENSSL_NO_ASM) &&                         \
+     (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+      defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)))
+// POWER has an intrinsics-based implementation of SHA-1 and thus the functions
+// normally defined in assembly are available even with |OPENSSL_NO_ASM| in
+// this case.
+#define SHA1_ASM
+void sha1_block_data_order(uint32_t *state, const uint8_t *in,
+                           size_t num_blocks);
+#endif
+
+#if !defined(OPENSSL_NO_ASM) &&                         \
+    (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+     defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
+#define SHA256_ASM
+#define SHA512_ASM
+void sha256_block_data_order(uint32_t *state, const uint8_t *in,
+                             size_t num_blocks);
+void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                             size_t num_blocks);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // OPENSSL_HEADER_SHA_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c
new file mode 100644
index 0000000..9a99775
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c	
@@ -0,0 +1,361 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+// Altivec-optimized SHA1 in C. This is tested on ppc64le only.
+//
+// References:
+// https://software.intel.com/en-us/articles/improving-the-performance-of-the-secure-hash-algorithm-1
+// http://arctic.org/~dean/crypto/sha1.html
+//
+// This code used the generic SHA-1 from OpenSSL as a basis and AltiVec
+// optimisations were added on top.
+
+#include <openssl_grpc/sha.h>
+
+#if defined(OPENSSL_PPC64LE)
+
+#include <altivec.h>
+
+void sha1_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
+
+static uint32_t rotate(uint32_t a, int n) { return (a << n) | (a >> (32 - n)); }
+
+typedef vector unsigned int vec_uint32_t;
+typedef vector unsigned char vec_uint8_t;
+
+// Vector constants
+static const vec_uint8_t k_swap_endianness = {3,  2,  1, 0, 7,  6,  5,  4,
+                                              11, 10, 9, 8, 15, 14, 13, 12};
+
+// Shift amounts for byte and bit shifts and rotations
+static const vec_uint8_t k_4_bytes = {32, 32, 32, 32, 32, 32, 32, 32,
+                                      32, 32, 32, 32, 32, 32, 32, 32};
+static const vec_uint8_t k_12_bytes = {96, 96, 96, 96, 96, 96, 96, 96,
+                                       96, 96, 96, 96, 96, 96, 96, 96};
+
+#define K_00_19 0x5a827999UL
+#define K_20_39 0x6ed9eba1UL
+#define K_40_59 0x8f1bbcdcUL
+#define K_60_79 0xca62c1d6UL
+
+// Vector versions of the above.
+static const vec_uint32_t K_00_19_x_4 = {K_00_19, K_00_19, K_00_19, K_00_19};
+static const vec_uint32_t K_20_39_x_4 = {K_20_39, K_20_39, K_20_39, K_20_39};
+static const vec_uint32_t K_40_59_x_4 = {K_40_59, K_40_59, K_40_59, K_40_59};
+static const vec_uint32_t K_60_79_x_4 = {K_60_79, K_60_79, K_60_79, K_60_79};
+
+// vector message scheduling: compute message schedule for round i..i+3 where i
+// is divisible by 4. We return the schedule w[i..i+3] as a vector. In
+// addition, we also precompute sum w[i..+3] and an additive constant K. This
+// is done to offload some computation of f() in the integer execution units.
+//
+// Byte shifting code below may not be correct for big-endian systems.
+static vec_uint32_t sched_00_15(vec_uint32_t *pre_added, const void *data,
+                                vec_uint32_t k) {
+  const vector unsigned char unaligned_data =
+    vec_vsx_ld(0, (const unsigned char*) data);
+  const vec_uint32_t v = (vec_uint32_t) unaligned_data;
+  const vec_uint32_t w = vec_perm(v, v, k_swap_endianness);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// Compute w[i..i+3] using these steps for i in [16, 20, 24, 28]
+//
+// w'[i  ]  = (w[i-3] ^ w[i-8] ^ w[i-14] ^ w[i-16]) <<< 1
+// w'[i+1]  = (w[i-2] ^ w[i-7] ^ w[i-13] ^ w[i-15]) <<< 1
+// w'[i+2]  = (w[i-1] ^ w[i-6] ^ w[i-12] ^ w[i-14]) <<< 1
+// w'[i+3]  = (     0 ^ w[i-5] ^ w[i-11] ^ w[i-13]) <<< 1
+//
+// w[  i] = w'[  i]
+// w[i+1] = w'[i+1]
+// w[i+2] = w'[i+2]
+// w[i+3] = w'[i+3] ^ (w'[i] <<< 1)
+static vec_uint32_t sched_16_31(vec_uint32_t *pre_added, vec_uint32_t minus_4,
+                                vec_uint32_t minus_8, vec_uint32_t minus_12,
+                                vec_uint32_t minus_16, vec_uint32_t k) {
+  const vec_uint32_t minus_3 = vec_sro(minus_4, k_4_bytes);
+  const vec_uint32_t minus_14 = vec_sld((minus_12), (minus_16), 8);
+  const vec_uint32_t k_1_bit = vec_splat_u32(1);
+  const vec_uint32_t w_prime =
+      vec_rl(minus_3 ^ minus_8 ^ minus_14 ^ minus_16, k_1_bit);
+  const vec_uint32_t w =
+      w_prime ^ vec_rl(vec_slo(w_prime, k_12_bytes), k_1_bit);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// Compute w[i..i+3] using this relation for i in [32, 36, 40 ... 76]
+// w[i] = (w[i-6] ^ w[i-16] ^ w[i-28] ^ w[i-32]), 2) <<< 2
+static vec_uint32_t sched_32_79(vec_uint32_t *pre_added, vec_uint32_t minus_4,
+                                vec_uint32_t minus_8, vec_uint32_t minus_16,
+                                vec_uint32_t minus_28, vec_uint32_t minus_32,
+                                vec_uint32_t k) {
+  const vec_uint32_t minus_6 = vec_sld(minus_4, minus_8, 8);
+  const vec_uint32_t k_2_bits = vec_splat_u32(2);
+  const vec_uint32_t w =
+      vec_rl(minus_6 ^ minus_16 ^ minus_28 ^ minus_32, k_2_bits);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
+// to the code in F_00_19. Wei attributes these optimisations to Peter
+// Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
+// F(x,y,z) (((x) & (y))  |  ((~(x)) & (z))) I've just become aware of another
+// tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a
+#define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
+#define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
+#define F_60_79(b, c, d) F_20_39(b, c, d)
+
+// We pre-added the K constants during message scheduling.
+#define BODY_00_19(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_20_39(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_40_59(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_40_59((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_60_79(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_60_79((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+void sha1_block_data_order(uint32_t *state, const uint8_t *data, size_t num) {
+  uint32_t A, B, C, D, E, T;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+  E = state[4];
+
+  for (;;) {
+    vec_uint32_t vw[20];
+    const uint32_t *w = (const uint32_t *)&vw;
+
+    vec_uint32_t k = K_00_19_x_4;
+    const vec_uint32_t w0 = sched_00_15(vw + 0, data + 0, k);
+    BODY_00_19(0, A, B, C, D, E, T);
+    BODY_00_19(1, T, A, B, C, D, E);
+    BODY_00_19(2, E, T, A, B, C, D);
+    BODY_00_19(3, D, E, T, A, B, C);
+
+    const vec_uint32_t w4 = sched_00_15(vw + 1, data + 16, k);
+    BODY_00_19(4, C, D, E, T, A, B);
+    BODY_00_19(5, B, C, D, E, T, A);
+    BODY_00_19(6, A, B, C, D, E, T);
+    BODY_00_19(7, T, A, B, C, D, E);
+
+    const vec_uint32_t w8 = sched_00_15(vw + 2, data + 32, k);
+    BODY_00_19(8, E, T, A, B, C, D);
+    BODY_00_19(9, D, E, T, A, B, C);
+    BODY_00_19(10, C, D, E, T, A, B);
+    BODY_00_19(11, B, C, D, E, T, A);
+
+    const vec_uint32_t w12 = sched_00_15(vw + 3, data + 48, k);
+    BODY_00_19(12, A, B, C, D, E, T);
+    BODY_00_19(13, T, A, B, C, D, E);
+    BODY_00_19(14, E, T, A, B, C, D);
+    BODY_00_19(15, D, E, T, A, B, C);
+
+    const vec_uint32_t w16 = sched_16_31(vw + 4, w12, w8, w4, w0, k);
+    BODY_00_19(16, C, D, E, T, A, B);
+    BODY_00_19(17, B, C, D, E, T, A);
+    BODY_00_19(18, A, B, C, D, E, T);
+    BODY_00_19(19, T, A, B, C, D, E);
+
+    k = K_20_39_x_4;
+    const vec_uint32_t w20 = sched_16_31(vw + 5, w16, w12, w8, w4, k);
+    BODY_20_39(20, E, T, A, B, C, D);
+    BODY_20_39(21, D, E, T, A, B, C);
+    BODY_20_39(22, C, D, E, T, A, B);
+    BODY_20_39(23, B, C, D, E, T, A);
+
+    const vec_uint32_t w24 = sched_16_31(vw + 6, w20, w16, w12, w8, k);
+    BODY_20_39(24, A, B, C, D, E, T);
+    BODY_20_39(25, T, A, B, C, D, E);
+    BODY_20_39(26, E, T, A, B, C, D);
+    BODY_20_39(27, D, E, T, A, B, C);
+
+    const vec_uint32_t w28 = sched_16_31(vw + 7, w24, w20, w16, w12, k);
+    BODY_20_39(28, C, D, E, T, A, B);
+    BODY_20_39(29, B, C, D, E, T, A);
+    BODY_20_39(30, A, B, C, D, E, T);
+    BODY_20_39(31, T, A, B, C, D, E);
+
+    const vec_uint32_t w32 = sched_32_79(vw + 8, w28, w24, w16, w4, w0, k);
+    BODY_20_39(32, E, T, A, B, C, D);
+    BODY_20_39(33, D, E, T, A, B, C);
+    BODY_20_39(34, C, D, E, T, A, B);
+    BODY_20_39(35, B, C, D, E, T, A);
+
+    const vec_uint32_t w36 = sched_32_79(vw + 9, w32, w28, w20, w8, w4, k);
+    BODY_20_39(36, A, B, C, D, E, T);
+    BODY_20_39(37, T, A, B, C, D, E);
+    BODY_20_39(38, E, T, A, B, C, D);
+    BODY_20_39(39, D, E, T, A, B, C);
+
+    k = K_40_59_x_4;
+    const vec_uint32_t w40 = sched_32_79(vw + 10, w36, w32, w24, w12, w8, k);
+    BODY_40_59(40, C, D, E, T, A, B);
+    BODY_40_59(41, B, C, D, E, T, A);
+    BODY_40_59(42, A, B, C, D, E, T);
+    BODY_40_59(43, T, A, B, C, D, E);
+
+    const vec_uint32_t w44 = sched_32_79(vw + 11, w40, w36, w28, w16, w12, k);
+    BODY_40_59(44, E, T, A, B, C, D);
+    BODY_40_59(45, D, E, T, A, B, C);
+    BODY_40_59(46, C, D, E, T, A, B);
+    BODY_40_59(47, B, C, D, E, T, A);
+
+    const vec_uint32_t w48 = sched_32_79(vw + 12, w44, w40, w32, w20, w16, k);
+    BODY_40_59(48, A, B, C, D, E, T);
+    BODY_40_59(49, T, A, B, C, D, E);
+    BODY_40_59(50, E, T, A, B, C, D);
+    BODY_40_59(51, D, E, T, A, B, C);
+
+    const vec_uint32_t w52 = sched_32_79(vw + 13, w48, w44, w36, w24, w20, k);
+    BODY_40_59(52, C, D, E, T, A, B);
+    BODY_40_59(53, B, C, D, E, T, A);
+    BODY_40_59(54, A, B, C, D, E, T);
+    BODY_40_59(55, T, A, B, C, D, E);
+
+    const vec_uint32_t w56 = sched_32_79(vw + 14, w52, w48, w40, w28, w24, k);
+    BODY_40_59(56, E, T, A, B, C, D);
+    BODY_40_59(57, D, E, T, A, B, C);
+    BODY_40_59(58, C, D, E, T, A, B);
+    BODY_40_59(59, B, C, D, E, T, A);
+
+    k = K_60_79_x_4;
+    const vec_uint32_t w60 = sched_32_79(vw + 15, w56, w52, w44, w32, w28, k);
+    BODY_60_79(60, A, B, C, D, E, T);
+    BODY_60_79(61, T, A, B, C, D, E);
+    BODY_60_79(62, E, T, A, B, C, D);
+    BODY_60_79(63, D, E, T, A, B, C);
+
+    const vec_uint32_t w64 = sched_32_79(vw + 16, w60, w56, w48, w36, w32, k);
+    BODY_60_79(64, C, D, E, T, A, B);
+    BODY_60_79(65, B, C, D, E, T, A);
+    BODY_60_79(66, A, B, C, D, E, T);
+    BODY_60_79(67, T, A, B, C, D, E);
+
+    const vec_uint32_t w68 = sched_32_79(vw + 17, w64, w60, w52, w40, w36, k);
+    BODY_60_79(68, E, T, A, B, C, D);
+    BODY_60_79(69, D, E, T, A, B, C);
+    BODY_60_79(70, C, D, E, T, A, B);
+    BODY_60_79(71, B, C, D, E, T, A);
+
+    const vec_uint32_t w72 = sched_32_79(vw + 18, w68, w64, w56, w44, w40, k);
+    BODY_60_79(72, A, B, C, D, E, T);
+    BODY_60_79(73, T, A, B, C, D, E);
+    BODY_60_79(74, E, T, A, B, C, D);
+    BODY_60_79(75, D, E, T, A, B, C);
+
+    // We don't use the last value
+    (void)sched_32_79(vw + 19, w72, w68, w60, w48, w44, k);
+    BODY_60_79(76, C, D, E, T, A, B);
+    BODY_60_79(77, B, C, D, E, T, A);
+    BODY_60_79(78, A, B, C, D, E, T);
+    BODY_60_79(79, T, A, B, C, D, E);
+
+    const uint32_t mask = 0xffffffffUL;
+    state[0] = (state[0] + E) & mask;
+    state[1] = (state[1] + T) & mask;
+    state[2] = (state[2] + A) & mask;
+    state[3] = (state[3] + B) & mask;
+    state[4] = (state[4] + C) & mask;
+
+    data += 64;
+    if (--num == 0) {
+      break;
+    }
+
+    A = state[0];
+    B = state[1];
+    C = state[2];
+    D = state[3];
+    E = state[4];
+  }
+}
+
+#endif  // OPENSSL_PPC64LE
+
+#undef K_00_19
+#undef K_20_39
+#undef K_40_59
+#undef K_60_79
+#undef F_00_19
+#undef F_20_39
+#undef F_40_59
+#undef F_60_79
+#undef BODY_00_19
+#undef BODY_20_39
+#undef BODY_40_59
+#undef BODY_60_79
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c.grpc_back
new file mode 100644
index 0000000..3152827
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1-altivec.c.grpc_back	
@@ -0,0 +1,361 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+// Altivec-optimized SHA1 in C. This is tested on ppc64le only.
+//
+// References:
+// https://software.intel.com/en-us/articles/improving-the-performance-of-the-secure-hash-algorithm-1
+// http://arctic.org/~dean/crypto/sha1.html
+//
+// This code used the generic SHA-1 from OpenSSL as a basis and AltiVec
+// optimisations were added on top.
+
+#include <openssl/sha.h>
+
+#if defined(OPENSSL_PPC64LE)
+
+#include <altivec.h>
+
+void sha1_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
+
+static uint32_t rotate(uint32_t a, int n) { return (a << n) | (a >> (32 - n)); }
+
+typedef vector unsigned int vec_uint32_t;
+typedef vector unsigned char vec_uint8_t;
+
+// Vector constants
+static const vec_uint8_t k_swap_endianness = {3,  2,  1, 0, 7,  6,  5,  4,
+                                              11, 10, 9, 8, 15, 14, 13, 12};
+
+// Shift amounts for byte and bit shifts and rotations
+static const vec_uint8_t k_4_bytes = {32, 32, 32, 32, 32, 32, 32, 32,
+                                      32, 32, 32, 32, 32, 32, 32, 32};
+static const vec_uint8_t k_12_bytes = {96, 96, 96, 96, 96, 96, 96, 96,
+                                       96, 96, 96, 96, 96, 96, 96, 96};
+
+#define K_00_19 0x5a827999UL
+#define K_20_39 0x6ed9eba1UL
+#define K_40_59 0x8f1bbcdcUL
+#define K_60_79 0xca62c1d6UL
+
+// Vector versions of the above.
+static const vec_uint32_t K_00_19_x_4 = {K_00_19, K_00_19, K_00_19, K_00_19};
+static const vec_uint32_t K_20_39_x_4 = {K_20_39, K_20_39, K_20_39, K_20_39};
+static const vec_uint32_t K_40_59_x_4 = {K_40_59, K_40_59, K_40_59, K_40_59};
+static const vec_uint32_t K_60_79_x_4 = {K_60_79, K_60_79, K_60_79, K_60_79};
+
+// vector message scheduling: compute message schedule for round i..i+3 where i
+// is divisible by 4. We return the schedule w[i..i+3] as a vector. In
+// addition, we also precompute sum w[i..+3] and an additive constant K. This
+// is done to offload some computation of f() in the integer execution units.
+//
+// Byte shifting code below may not be correct for big-endian systems.
+static vec_uint32_t sched_00_15(vec_uint32_t *pre_added, const void *data,
+                                vec_uint32_t k) {
+  const vector unsigned char unaligned_data =
+    vec_vsx_ld(0, (const unsigned char*) data);
+  const vec_uint32_t v = (vec_uint32_t) unaligned_data;
+  const vec_uint32_t w = vec_perm(v, v, k_swap_endianness);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// Compute w[i..i+3] using these steps for i in [16, 20, 24, 28]
+//
+// w'[i  ]  = (w[i-3] ^ w[i-8] ^ w[i-14] ^ w[i-16]) <<< 1
+// w'[i+1]  = (w[i-2] ^ w[i-7] ^ w[i-13] ^ w[i-15]) <<< 1
+// w'[i+2]  = (w[i-1] ^ w[i-6] ^ w[i-12] ^ w[i-14]) <<< 1
+// w'[i+3]  = (     0 ^ w[i-5] ^ w[i-11] ^ w[i-13]) <<< 1
+//
+// w[  i] = w'[  i]
+// w[i+1] = w'[i+1]
+// w[i+2] = w'[i+2]
+// w[i+3] = w'[i+3] ^ (w'[i] <<< 1)
+static vec_uint32_t sched_16_31(vec_uint32_t *pre_added, vec_uint32_t minus_4,
+                                vec_uint32_t minus_8, vec_uint32_t minus_12,
+                                vec_uint32_t minus_16, vec_uint32_t k) {
+  const vec_uint32_t minus_3 = vec_sro(minus_4, k_4_bytes);
+  const vec_uint32_t minus_14 = vec_sld((minus_12), (minus_16), 8);
+  const vec_uint32_t k_1_bit = vec_splat_u32(1);
+  const vec_uint32_t w_prime =
+      vec_rl(minus_3 ^ minus_8 ^ minus_14 ^ minus_16, k_1_bit);
+  const vec_uint32_t w =
+      w_prime ^ vec_rl(vec_slo(w_prime, k_12_bytes), k_1_bit);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// Compute w[i..i+3] using this relation for i in [32, 36, 40 ... 76]
+// w[i] = (w[i-6] ^ w[i-16] ^ w[i-28] ^ w[i-32]), 2) <<< 2
+static vec_uint32_t sched_32_79(vec_uint32_t *pre_added, vec_uint32_t minus_4,
+                                vec_uint32_t minus_8, vec_uint32_t minus_16,
+                                vec_uint32_t minus_28, vec_uint32_t minus_32,
+                                vec_uint32_t k) {
+  const vec_uint32_t minus_6 = vec_sld(minus_4, minus_8, 8);
+  const vec_uint32_t k_2_bits = vec_splat_u32(2);
+  const vec_uint32_t w =
+      vec_rl(minus_6 ^ minus_16 ^ minus_28 ^ minus_32, k_2_bits);
+  vec_st(w + k, 0, pre_added);
+  return w;
+}
+
+// As pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
+// to the code in F_00_19. Wei attributes these optimisations to Peter
+// Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
+// F(x,y,z) (((x) & (y))  |  ((~(x)) & (z))) I've just become aware of another
+// tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a
+#define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
+#define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
+#define F_60_79(b, c, d) F_20_39(b, c, d)
+
+// We pre-added the K constants during message scheduling.
+#define BODY_00_19(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_20_39(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_40_59(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_40_59((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+#define BODY_60_79(i, a, b, c, d, e, f)                         \
+  do {                                                          \
+    (f) = w[i] + (e) + rotate((a), 5) + F_60_79((b), (c), (d)); \
+    (b) = rotate((b), 30);                                      \
+  } while (0)
+
+void sha1_block_data_order(uint32_t *state, const uint8_t *data, size_t num) {
+  uint32_t A, B, C, D, E, T;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+  E = state[4];
+
+  for (;;) {
+    vec_uint32_t vw[20];
+    const uint32_t *w = (const uint32_t *)&vw;
+
+    vec_uint32_t k = K_00_19_x_4;
+    const vec_uint32_t w0 = sched_00_15(vw + 0, data + 0, k);
+    BODY_00_19(0, A, B, C, D, E, T);
+    BODY_00_19(1, T, A, B, C, D, E);
+    BODY_00_19(2, E, T, A, B, C, D);
+    BODY_00_19(3, D, E, T, A, B, C);
+
+    const vec_uint32_t w4 = sched_00_15(vw + 1, data + 16, k);
+    BODY_00_19(4, C, D, E, T, A, B);
+    BODY_00_19(5, B, C, D, E, T, A);
+    BODY_00_19(6, A, B, C, D, E, T);
+    BODY_00_19(7, T, A, B, C, D, E);
+
+    const vec_uint32_t w8 = sched_00_15(vw + 2, data + 32, k);
+    BODY_00_19(8, E, T, A, B, C, D);
+    BODY_00_19(9, D, E, T, A, B, C);
+    BODY_00_19(10, C, D, E, T, A, B);
+    BODY_00_19(11, B, C, D, E, T, A);
+
+    const vec_uint32_t w12 = sched_00_15(vw + 3, data + 48, k);
+    BODY_00_19(12, A, B, C, D, E, T);
+    BODY_00_19(13, T, A, B, C, D, E);
+    BODY_00_19(14, E, T, A, B, C, D);
+    BODY_00_19(15, D, E, T, A, B, C);
+
+    const vec_uint32_t w16 = sched_16_31(vw + 4, w12, w8, w4, w0, k);
+    BODY_00_19(16, C, D, E, T, A, B);
+    BODY_00_19(17, B, C, D, E, T, A);
+    BODY_00_19(18, A, B, C, D, E, T);
+    BODY_00_19(19, T, A, B, C, D, E);
+
+    k = K_20_39_x_4;
+    const vec_uint32_t w20 = sched_16_31(vw + 5, w16, w12, w8, w4, k);
+    BODY_20_39(20, E, T, A, B, C, D);
+    BODY_20_39(21, D, E, T, A, B, C);
+    BODY_20_39(22, C, D, E, T, A, B);
+    BODY_20_39(23, B, C, D, E, T, A);
+
+    const vec_uint32_t w24 = sched_16_31(vw + 6, w20, w16, w12, w8, k);
+    BODY_20_39(24, A, B, C, D, E, T);
+    BODY_20_39(25, T, A, B, C, D, E);
+    BODY_20_39(26, E, T, A, B, C, D);
+    BODY_20_39(27, D, E, T, A, B, C);
+
+    const vec_uint32_t w28 = sched_16_31(vw + 7, w24, w20, w16, w12, k);
+    BODY_20_39(28, C, D, E, T, A, B);
+    BODY_20_39(29, B, C, D, E, T, A);
+    BODY_20_39(30, A, B, C, D, E, T);
+    BODY_20_39(31, T, A, B, C, D, E);
+
+    const vec_uint32_t w32 = sched_32_79(vw + 8, w28, w24, w16, w4, w0, k);
+    BODY_20_39(32, E, T, A, B, C, D);
+    BODY_20_39(33, D, E, T, A, B, C);
+    BODY_20_39(34, C, D, E, T, A, B);
+    BODY_20_39(35, B, C, D, E, T, A);
+
+    const vec_uint32_t w36 = sched_32_79(vw + 9, w32, w28, w20, w8, w4, k);
+    BODY_20_39(36, A, B, C, D, E, T);
+    BODY_20_39(37, T, A, B, C, D, E);
+    BODY_20_39(38, E, T, A, B, C, D);
+    BODY_20_39(39, D, E, T, A, B, C);
+
+    k = K_40_59_x_4;
+    const vec_uint32_t w40 = sched_32_79(vw + 10, w36, w32, w24, w12, w8, k);
+    BODY_40_59(40, C, D, E, T, A, B);
+    BODY_40_59(41, B, C, D, E, T, A);
+    BODY_40_59(42, A, B, C, D, E, T);
+    BODY_40_59(43, T, A, B, C, D, E);
+
+    const vec_uint32_t w44 = sched_32_79(vw + 11, w40, w36, w28, w16, w12, k);
+    BODY_40_59(44, E, T, A, B, C, D);
+    BODY_40_59(45, D, E, T, A, B, C);
+    BODY_40_59(46, C, D, E, T, A, B);
+    BODY_40_59(47, B, C, D, E, T, A);
+
+    const vec_uint32_t w48 = sched_32_79(vw + 12, w44, w40, w32, w20, w16, k);
+    BODY_40_59(48, A, B, C, D, E, T);
+    BODY_40_59(49, T, A, B, C, D, E);
+    BODY_40_59(50, E, T, A, B, C, D);
+    BODY_40_59(51, D, E, T, A, B, C);
+
+    const vec_uint32_t w52 = sched_32_79(vw + 13, w48, w44, w36, w24, w20, k);
+    BODY_40_59(52, C, D, E, T, A, B);
+    BODY_40_59(53, B, C, D, E, T, A);
+    BODY_40_59(54, A, B, C, D, E, T);
+    BODY_40_59(55, T, A, B, C, D, E);
+
+    const vec_uint32_t w56 = sched_32_79(vw + 14, w52, w48, w40, w28, w24, k);
+    BODY_40_59(56, E, T, A, B, C, D);
+    BODY_40_59(57, D, E, T, A, B, C);
+    BODY_40_59(58, C, D, E, T, A, B);
+    BODY_40_59(59, B, C, D, E, T, A);
+
+    k = K_60_79_x_4;
+    const vec_uint32_t w60 = sched_32_79(vw + 15, w56, w52, w44, w32, w28, k);
+    BODY_60_79(60, A, B, C, D, E, T);
+    BODY_60_79(61, T, A, B, C, D, E);
+    BODY_60_79(62, E, T, A, B, C, D);
+    BODY_60_79(63, D, E, T, A, B, C);
+
+    const vec_uint32_t w64 = sched_32_79(vw + 16, w60, w56, w48, w36, w32, k);
+    BODY_60_79(64, C, D, E, T, A, B);
+    BODY_60_79(65, B, C, D, E, T, A);
+    BODY_60_79(66, A, B, C, D, E, T);
+    BODY_60_79(67, T, A, B, C, D, E);
+
+    const vec_uint32_t w68 = sched_32_79(vw + 17, w64, w60, w52, w40, w36, k);
+    BODY_60_79(68, E, T, A, B, C, D);
+    BODY_60_79(69, D, E, T, A, B, C);
+    BODY_60_79(70, C, D, E, T, A, B);
+    BODY_60_79(71, B, C, D, E, T, A);
+
+    const vec_uint32_t w72 = sched_32_79(vw + 18, w68, w64, w56, w44, w40, k);
+    BODY_60_79(72, A, B, C, D, E, T);
+    BODY_60_79(73, T, A, B, C, D, E);
+    BODY_60_79(74, E, T, A, B, C, D);
+    BODY_60_79(75, D, E, T, A, B, C);
+
+    // We don't use the last value
+    (void)sched_32_79(vw + 19, w72, w68, w60, w48, w44, k);
+    BODY_60_79(76, C, D, E, T, A, B);
+    BODY_60_79(77, B, C, D, E, T, A);
+    BODY_60_79(78, A, B, C, D, E, T);
+    BODY_60_79(79, T, A, B, C, D, E);
+
+    const uint32_t mask = 0xffffffffUL;
+    state[0] = (state[0] + E) & mask;
+    state[1] = (state[1] + T) & mask;
+    state[2] = (state[2] + A) & mask;
+    state[3] = (state[3] + B) & mask;
+    state[4] = (state[4] + C) & mask;
+
+    data += 64;
+    if (--num == 0) {
+      break;
+    }
+
+    A = state[0];
+    B = state[1];
+    C = state[2];
+    D = state[3];
+    E = state[4];
+  }
+}
+
+#endif  // OPENSSL_PPC64LE
+
+#undef K_00_19
+#undef K_20_39
+#undef K_40_59
+#undef K_60_79
+#undef F_00_19
+#undef F_20_39
+#undef F_40_59
+#undef F_60_79
+#undef BODY_00_19
+#undef BODY_20_39
+#undef BODY_40_59
+#undef BODY_60_79
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c
new file mode 100644
index 0000000..1e5aaea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c	
@@ -0,0 +1,371 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/sha.h>
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int SHA1_Init(SHA_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA_CTX));
+  sha->h[0] = 0x67452301UL;
+  sha->h[1] = 0xefcdab89UL;
+  sha->h[2] = 0x98badcfeUL;
+  sha->h[3] = 0x10325476UL;
+  sha->h[4] = 0xc3d2e1f0UL;
+  return 1;
+}
+
+uint8_t *SHA1(const uint8_t *data, size_t len, uint8_t out[SHA_DIGEST_LENGTH]) {
+  SHA_CTX ctx;
+  SHA1_Init(&ctx);
+  SHA1_Update(&ctx, data, len);
+  SHA1_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+#define DATA_ORDER_IS_BIG_ENDIAN
+
+#define HASH_CTX                SHA_CTX
+#define HASH_CBLOCK             64
+#define HASH_DIGEST_LENGTH      20
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[4];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+
+#define HASH_UPDATE SHA1_Update
+#define HASH_TRANSFORM SHA1_Transform
+#define HASH_FINAL SHA1_Final
+#define HASH_BLOCK_DATA_ORDER sha1_block_data_order
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+#define Xupdate(a, ix, ia, ib, ic, id) \
+  do {                                 \
+    (a) = ((ia) ^ (ib) ^ (ic) ^ (id)); \
+    (ix) = (a) = ROTATE((a), 1);       \
+  } while (0)
+
+#if !defined(SHA1_ASM)
+static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
+                                  size_t num);
+#endif
+
+#include "../digest/md32_common.h"
+
+#define K_00_19 0x5a827999UL
+#define K_20_39 0x6ed9eba1UL
+#define K_40_59 0x8f1bbcdcUL
+#define K_60_79 0xca62c1d6UL
+
+// As  pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
+// to the code in F_00_19.  Wei attributes these optimisations to Peter
+// Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
+// F(x,y,z) (((x) & (y))  |  ((~(x)) & (z))) I've just become aware of another
+// tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a
+#define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
+#define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
+#define F_60_79(b, c, d) F_20_39(b, c, d)
+
+#define BODY_00_15(i, a, b, c, d, e, f, xi)                               \
+  do {                                                                    \
+    (f) = (xi) + (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                                \
+  } while (0)
+
+#define BODY_16_19(i, a, b, c, d, e, f, xi, xa, xb, xc, xd)         \
+  do {                                                              \
+    Xupdate(f, xi, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_20_31(i, a, b, c, d, e, f, xi, xa, xb, xc, xd)         \
+  do {                                                              \
+    Xupdate(f, xi, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_32_39(i, a, b, c, d, e, f, xa, xb, xc, xd)             \
+  do {                                                              \
+    Xupdate(f, xa, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_40_59(i, a, b, c, d, e, f, xa, xb, xc, xd)             \
+  do {                                                              \
+    Xupdate(f, xa, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_40_59 + ROTATE((a), 5) + F_40_59((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_60_79(i, a, b, c, d, e, f, xa, xb, xc, xd)                   \
+  do {                                                                    \
+    Xupdate(f, xa, xa, xb, xc, xd);                                       \
+    (f) = (xa) + (e) + K_60_79 + ROTATE((a), 5) + F_60_79((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                                \
+  } while (0)
+
+#ifdef X
+#undef X
+#endif
+
+/* Originally X was an array. As it's automatic it's natural
+* to expect RISC compiler to accomodate at least part of it in
+* the register bank, isn't it? Unfortunately not all compilers
+* "find" this expectation reasonable:-( On order to make such
+* compilers generate better code I replace X[] with a bunch of
+* X0, X1, etc. See the function body below...
+*         <appro@fy.chalmers.se> */
+#define X(i)  XX##i
+
+#if !defined(SHA1_ASM)
+static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
+                                  size_t num) {
+  register uint32_t A, B, C, D, E, T, l;
+  uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10,
+      XX11, XX12, XX13, XX14, XX15;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+  E = state[4];
+
+  for (;;) {
+    HOST_c2l(data, l);
+    X(0) = l;
+    HOST_c2l(data, l);
+    X(1) = l;
+    BODY_00_15(0, A, B, C, D, E, T, X(0));
+    HOST_c2l(data, l);
+    X(2) = l;
+    BODY_00_15(1, T, A, B, C, D, E, X(1));
+    HOST_c2l(data, l);
+    X(3) = l;
+    BODY_00_15(2, E, T, A, B, C, D, X(2));
+    HOST_c2l(data, l);
+    X(4) = l;
+    BODY_00_15(3, D, E, T, A, B, C, X(3));
+    HOST_c2l(data, l);
+    X(5) = l;
+    BODY_00_15(4, C, D, E, T, A, B, X(4));
+    HOST_c2l(data, l);
+    X(6) = l;
+    BODY_00_15(5, B, C, D, E, T, A, X(5));
+    HOST_c2l(data, l);
+    X(7) = l;
+    BODY_00_15(6, A, B, C, D, E, T, X(6));
+    HOST_c2l(data, l);
+    X(8) = l;
+    BODY_00_15(7, T, A, B, C, D, E, X(7));
+    HOST_c2l(data, l);
+    X(9) = l;
+    BODY_00_15(8, E, T, A, B, C, D, X(8));
+    HOST_c2l(data, l);
+    X(10) = l;
+    BODY_00_15(9, D, E, T, A, B, C, X(9));
+    HOST_c2l(data, l);
+    X(11) = l;
+    BODY_00_15(10, C, D, E, T, A, B, X(10));
+    HOST_c2l(data, l);
+    X(12) = l;
+    BODY_00_15(11, B, C, D, E, T, A, X(11));
+    HOST_c2l(data, l);
+    X(13) = l;
+    BODY_00_15(12, A, B, C, D, E, T, X(12));
+    HOST_c2l(data, l);
+    X(14) = l;
+    BODY_00_15(13, T, A, B, C, D, E, X(13));
+    HOST_c2l(data, l);
+    X(15) = l;
+    BODY_00_15(14, E, T, A, B, C, D, X(14));
+    BODY_00_15(15, D, E, T, A, B, C, X(15));
+
+    BODY_16_19(16, C, D, E, T, A, B, X(0), X(0), X(2), X(8), X(13));
+    BODY_16_19(17, B, C, D, E, T, A, X(1), X(1), X(3), X(9), X(14));
+    BODY_16_19(18, A, B, C, D, E, T, X(2), X(2), X(4), X(10), X(15));
+    BODY_16_19(19, T, A, B, C, D, E, X(3), X(3), X(5), X(11), X(0));
+
+    BODY_20_31(20, E, T, A, B, C, D, X(4), X(4), X(6), X(12), X(1));
+    BODY_20_31(21, D, E, T, A, B, C, X(5), X(5), X(7), X(13), X(2));
+    BODY_20_31(22, C, D, E, T, A, B, X(6), X(6), X(8), X(14), X(3));
+    BODY_20_31(23, B, C, D, E, T, A, X(7), X(7), X(9), X(15), X(4));
+    BODY_20_31(24, A, B, C, D, E, T, X(8), X(8), X(10), X(0), X(5));
+    BODY_20_31(25, T, A, B, C, D, E, X(9), X(9), X(11), X(1), X(6));
+    BODY_20_31(26, E, T, A, B, C, D, X(10), X(10), X(12), X(2), X(7));
+    BODY_20_31(27, D, E, T, A, B, C, X(11), X(11), X(13), X(3), X(8));
+    BODY_20_31(28, C, D, E, T, A, B, X(12), X(12), X(14), X(4), X(9));
+    BODY_20_31(29, B, C, D, E, T, A, X(13), X(13), X(15), X(5), X(10));
+    BODY_20_31(30, A, B, C, D, E, T, X(14), X(14), X(0), X(6), X(11));
+    BODY_20_31(31, T, A, B, C, D, E, X(15), X(15), X(1), X(7), X(12));
+
+    BODY_32_39(32, E, T, A, B, C, D, X(0), X(2), X(8), X(13));
+    BODY_32_39(33, D, E, T, A, B, C, X(1), X(3), X(9), X(14));
+    BODY_32_39(34, C, D, E, T, A, B, X(2), X(4), X(10), X(15));
+    BODY_32_39(35, B, C, D, E, T, A, X(3), X(5), X(11), X(0));
+    BODY_32_39(36, A, B, C, D, E, T, X(4), X(6), X(12), X(1));
+    BODY_32_39(37, T, A, B, C, D, E, X(5), X(7), X(13), X(2));
+    BODY_32_39(38, E, T, A, B, C, D, X(6), X(8), X(14), X(3));
+    BODY_32_39(39, D, E, T, A, B, C, X(7), X(9), X(15), X(4));
+
+    BODY_40_59(40, C, D, E, T, A, B, X(8), X(10), X(0), X(5));
+    BODY_40_59(41, B, C, D, E, T, A, X(9), X(11), X(1), X(6));
+    BODY_40_59(42, A, B, C, D, E, T, X(10), X(12), X(2), X(7));
+    BODY_40_59(43, T, A, B, C, D, E, X(11), X(13), X(3), X(8));
+    BODY_40_59(44, E, T, A, B, C, D, X(12), X(14), X(4), X(9));
+    BODY_40_59(45, D, E, T, A, B, C, X(13), X(15), X(5), X(10));
+    BODY_40_59(46, C, D, E, T, A, B, X(14), X(0), X(6), X(11));
+    BODY_40_59(47, B, C, D, E, T, A, X(15), X(1), X(7), X(12));
+    BODY_40_59(48, A, B, C, D, E, T, X(0), X(2), X(8), X(13));
+    BODY_40_59(49, T, A, B, C, D, E, X(1), X(3), X(9), X(14));
+    BODY_40_59(50, E, T, A, B, C, D, X(2), X(4), X(10), X(15));
+    BODY_40_59(51, D, E, T, A, B, C, X(3), X(5), X(11), X(0));
+    BODY_40_59(52, C, D, E, T, A, B, X(4), X(6), X(12), X(1));
+    BODY_40_59(53, B, C, D, E, T, A, X(5), X(7), X(13), X(2));
+    BODY_40_59(54, A, B, C, D, E, T, X(6), X(8), X(14), X(3));
+    BODY_40_59(55, T, A, B, C, D, E, X(7), X(9), X(15), X(4));
+    BODY_40_59(56, E, T, A, B, C, D, X(8), X(10), X(0), X(5));
+    BODY_40_59(57, D, E, T, A, B, C, X(9), X(11), X(1), X(6));
+    BODY_40_59(58, C, D, E, T, A, B, X(10), X(12), X(2), X(7));
+    BODY_40_59(59, B, C, D, E, T, A, X(11), X(13), X(3), X(8));
+
+    BODY_60_79(60, A, B, C, D, E, T, X(12), X(14), X(4), X(9));
+    BODY_60_79(61, T, A, B, C, D, E, X(13), X(15), X(5), X(10));
+    BODY_60_79(62, E, T, A, B, C, D, X(14), X(0), X(6), X(11));
+    BODY_60_79(63, D, E, T, A, B, C, X(15), X(1), X(7), X(12));
+    BODY_60_79(64, C, D, E, T, A, B, X(0), X(2), X(8), X(13));
+    BODY_60_79(65, B, C, D, E, T, A, X(1), X(3), X(9), X(14));
+    BODY_60_79(66, A, B, C, D, E, T, X(2), X(4), X(10), X(15));
+    BODY_60_79(67, T, A, B, C, D, E, X(3), X(5), X(11), X(0));
+    BODY_60_79(68, E, T, A, B, C, D, X(4), X(6), X(12), X(1));
+    BODY_60_79(69, D, E, T, A, B, C, X(5), X(7), X(13), X(2));
+    BODY_60_79(70, C, D, E, T, A, B, X(6), X(8), X(14), X(3));
+    BODY_60_79(71, B, C, D, E, T, A, X(7), X(9), X(15), X(4));
+    BODY_60_79(72, A, B, C, D, E, T, X(8), X(10), X(0), X(5));
+    BODY_60_79(73, T, A, B, C, D, E, X(9), X(11), X(1), X(6));
+    BODY_60_79(74, E, T, A, B, C, D, X(10), X(12), X(2), X(7));
+    BODY_60_79(75, D, E, T, A, B, C, X(11), X(13), X(3), X(8));
+    BODY_60_79(76, C, D, E, T, A, B, X(12), X(14), X(4), X(9));
+    BODY_60_79(77, B, C, D, E, T, A, X(13), X(15), X(5), X(10));
+    BODY_60_79(78, A, B, C, D, E, T, X(14), X(0), X(6), X(11));
+    BODY_60_79(79, T, A, B, C, D, E, X(15), X(1), X(7), X(12));
+
+    state[0] = (state[0] + E) & 0xffffffffL;
+    state[1] = (state[1] + T) & 0xffffffffL;
+    state[2] = (state[2] + A) & 0xffffffffL;
+    state[3] = (state[3] + B) & 0xffffffffL;
+    state[4] = (state[4] + C) & 0xffffffffL;
+
+    if (--num == 0) {
+      break;
+    }
+
+    A = state[0];
+    B = state[1];
+    C = state[2];
+    D = state[3];
+    E = state[4];
+  }
+}
+#endif
+
+#undef DATA_ORDER_IS_BIG_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_MAKE_STRING
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_BLOCK_DATA_ORDER
+#undef ROTATE
+#undef Xupdate
+#undef K_00_19
+#undef K_20_39
+#undef K_40_59
+#undef K_60_79
+#undef F_00_19
+#undef F_20_39
+#undef F_40_59
+#undef F_60_79
+#undef BODY_00_15
+#undef BODY_16_19
+#undef BODY_20_31
+#undef BODY_32_39
+#undef BODY_40_59
+#undef BODY_60_79
+#undef X
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c.grpc_back
new file mode 100644
index 0000000..3b76194
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha1.c.grpc_back	
@@ -0,0 +1,371 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/sha.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int SHA1_Init(SHA_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA_CTX));
+  sha->h[0] = 0x67452301UL;
+  sha->h[1] = 0xefcdab89UL;
+  sha->h[2] = 0x98badcfeUL;
+  sha->h[3] = 0x10325476UL;
+  sha->h[4] = 0xc3d2e1f0UL;
+  return 1;
+}
+
+uint8_t *SHA1(const uint8_t *data, size_t len, uint8_t out[SHA_DIGEST_LENGTH]) {
+  SHA_CTX ctx;
+  SHA1_Init(&ctx);
+  SHA1_Update(&ctx, data, len);
+  SHA1_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+#define DATA_ORDER_IS_BIG_ENDIAN
+
+#define HASH_CTX                SHA_CTX
+#define HASH_CBLOCK             64
+#define HASH_DIGEST_LENGTH      20
+#define HASH_MAKE_STRING(c, s) \
+  do {                         \
+    uint32_t ll;               \
+    ll = (c)->h[0];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[1];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[2];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[3];            \
+    HOST_l2c(ll, (s));         \
+    ll = (c)->h[4];            \
+    HOST_l2c(ll, (s));         \
+  } while (0)
+
+#define HASH_UPDATE SHA1_Update
+#define HASH_TRANSFORM SHA1_Transform
+#define HASH_FINAL SHA1_Final
+#define HASH_BLOCK_DATA_ORDER sha1_block_data_order
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+#define Xupdate(a, ix, ia, ib, ic, id) \
+  do {                                 \
+    (a) = ((ia) ^ (ib) ^ (ic) ^ (id)); \
+    (ix) = (a) = ROTATE((a), 1);       \
+  } while (0)
+
+#if !defined(SHA1_ASM)
+static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
+                                  size_t num);
+#endif
+
+#include "../digest/md32_common.h"
+
+#define K_00_19 0x5a827999UL
+#define K_20_39 0x6ed9eba1UL
+#define K_40_59 0x8f1bbcdcUL
+#define K_60_79 0xca62c1d6UL
+
+// As  pointed out by Wei Dai <weidai@eskimo.com>, F() below can be simplified
+// to the code in F_00_19.  Wei attributes these optimisations to Peter
+// Gutmann's SHS code, and he attributes it to Rich Schroeppel. #define
+// F(x,y,z) (((x) & (y))  |  ((~(x)) & (z))) I've just become aware of another
+// tweak to be made, again from Wei Dai, in F_40_59, (x&a)|(y&a) -> (x|y)&a
+#define F_00_19(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
+#define F_20_39(b, c, d) ((b) ^ (c) ^ (d))
+#define F_40_59(b, c, d) (((b) & (c)) | (((b) | (c)) & (d)))
+#define F_60_79(b, c, d) F_20_39(b, c, d)
+
+#define BODY_00_15(i, a, b, c, d, e, f, xi)                               \
+  do {                                                                    \
+    (f) = (xi) + (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                                \
+  } while (0)
+
+#define BODY_16_19(i, a, b, c, d, e, f, xi, xa, xb, xc, xd)         \
+  do {                                                              \
+    Xupdate(f, xi, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_00_19 + ROTATE((a), 5) + F_00_19((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_20_31(i, a, b, c, d, e, f, xi, xa, xb, xc, xd)         \
+  do {                                                              \
+    Xupdate(f, xi, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_32_39(i, a, b, c, d, e, f, xa, xb, xc, xd)             \
+  do {                                                              \
+    Xupdate(f, xa, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_20_39 + ROTATE((a), 5) + F_20_39((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_40_59(i, a, b, c, d, e, f, xa, xb, xc, xd)             \
+  do {                                                              \
+    Xupdate(f, xa, xa, xb, xc, xd);                                 \
+    (f) += (e) + K_40_59 + ROTATE((a), 5) + F_40_59((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                          \
+  } while (0)
+
+#define BODY_60_79(i, a, b, c, d, e, f, xa, xb, xc, xd)                   \
+  do {                                                                    \
+    Xupdate(f, xa, xa, xb, xc, xd);                                       \
+    (f) = (xa) + (e) + K_60_79 + ROTATE((a), 5) + F_60_79((b), (c), (d)); \
+    (b) = ROTATE((b), 30);                                                \
+  } while (0)
+
+#ifdef X
+#undef X
+#endif
+
+/* Originally X was an array. As it's automatic it's natural
+* to expect RISC compiler to accomodate at least part of it in
+* the register bank, isn't it? Unfortunately not all compilers
+* "find" this expectation reasonable:-( On order to make such
+* compilers generate better code I replace X[] with a bunch of
+* X0, X1, etc. See the function body below...
+*         <appro@fy.chalmers.se> */
+#define X(i)  XX##i
+
+#if !defined(SHA1_ASM)
+static void sha1_block_data_order(uint32_t *state, const uint8_t *data,
+                                  size_t num) {
+  register uint32_t A, B, C, D, E, T, l;
+  uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10,
+      XX11, XX12, XX13, XX14, XX15;
+
+  A = state[0];
+  B = state[1];
+  C = state[2];
+  D = state[3];
+  E = state[4];
+
+  for (;;) {
+    HOST_c2l(data, l);
+    X(0) = l;
+    HOST_c2l(data, l);
+    X(1) = l;
+    BODY_00_15(0, A, B, C, D, E, T, X(0));
+    HOST_c2l(data, l);
+    X(2) = l;
+    BODY_00_15(1, T, A, B, C, D, E, X(1));
+    HOST_c2l(data, l);
+    X(3) = l;
+    BODY_00_15(2, E, T, A, B, C, D, X(2));
+    HOST_c2l(data, l);
+    X(4) = l;
+    BODY_00_15(3, D, E, T, A, B, C, X(3));
+    HOST_c2l(data, l);
+    X(5) = l;
+    BODY_00_15(4, C, D, E, T, A, B, X(4));
+    HOST_c2l(data, l);
+    X(6) = l;
+    BODY_00_15(5, B, C, D, E, T, A, X(5));
+    HOST_c2l(data, l);
+    X(7) = l;
+    BODY_00_15(6, A, B, C, D, E, T, X(6));
+    HOST_c2l(data, l);
+    X(8) = l;
+    BODY_00_15(7, T, A, B, C, D, E, X(7));
+    HOST_c2l(data, l);
+    X(9) = l;
+    BODY_00_15(8, E, T, A, B, C, D, X(8));
+    HOST_c2l(data, l);
+    X(10) = l;
+    BODY_00_15(9, D, E, T, A, B, C, X(9));
+    HOST_c2l(data, l);
+    X(11) = l;
+    BODY_00_15(10, C, D, E, T, A, B, X(10));
+    HOST_c2l(data, l);
+    X(12) = l;
+    BODY_00_15(11, B, C, D, E, T, A, X(11));
+    HOST_c2l(data, l);
+    X(13) = l;
+    BODY_00_15(12, A, B, C, D, E, T, X(12));
+    HOST_c2l(data, l);
+    X(14) = l;
+    BODY_00_15(13, T, A, B, C, D, E, X(13));
+    HOST_c2l(data, l);
+    X(15) = l;
+    BODY_00_15(14, E, T, A, B, C, D, X(14));
+    BODY_00_15(15, D, E, T, A, B, C, X(15));
+
+    BODY_16_19(16, C, D, E, T, A, B, X(0), X(0), X(2), X(8), X(13));
+    BODY_16_19(17, B, C, D, E, T, A, X(1), X(1), X(3), X(9), X(14));
+    BODY_16_19(18, A, B, C, D, E, T, X(2), X(2), X(4), X(10), X(15));
+    BODY_16_19(19, T, A, B, C, D, E, X(3), X(3), X(5), X(11), X(0));
+
+    BODY_20_31(20, E, T, A, B, C, D, X(4), X(4), X(6), X(12), X(1));
+    BODY_20_31(21, D, E, T, A, B, C, X(5), X(5), X(7), X(13), X(2));
+    BODY_20_31(22, C, D, E, T, A, B, X(6), X(6), X(8), X(14), X(3));
+    BODY_20_31(23, B, C, D, E, T, A, X(7), X(7), X(9), X(15), X(4));
+    BODY_20_31(24, A, B, C, D, E, T, X(8), X(8), X(10), X(0), X(5));
+    BODY_20_31(25, T, A, B, C, D, E, X(9), X(9), X(11), X(1), X(6));
+    BODY_20_31(26, E, T, A, B, C, D, X(10), X(10), X(12), X(2), X(7));
+    BODY_20_31(27, D, E, T, A, B, C, X(11), X(11), X(13), X(3), X(8));
+    BODY_20_31(28, C, D, E, T, A, B, X(12), X(12), X(14), X(4), X(9));
+    BODY_20_31(29, B, C, D, E, T, A, X(13), X(13), X(15), X(5), X(10));
+    BODY_20_31(30, A, B, C, D, E, T, X(14), X(14), X(0), X(6), X(11));
+    BODY_20_31(31, T, A, B, C, D, E, X(15), X(15), X(1), X(7), X(12));
+
+    BODY_32_39(32, E, T, A, B, C, D, X(0), X(2), X(8), X(13));
+    BODY_32_39(33, D, E, T, A, B, C, X(1), X(3), X(9), X(14));
+    BODY_32_39(34, C, D, E, T, A, B, X(2), X(4), X(10), X(15));
+    BODY_32_39(35, B, C, D, E, T, A, X(3), X(5), X(11), X(0));
+    BODY_32_39(36, A, B, C, D, E, T, X(4), X(6), X(12), X(1));
+    BODY_32_39(37, T, A, B, C, D, E, X(5), X(7), X(13), X(2));
+    BODY_32_39(38, E, T, A, B, C, D, X(6), X(8), X(14), X(3));
+    BODY_32_39(39, D, E, T, A, B, C, X(7), X(9), X(15), X(4));
+
+    BODY_40_59(40, C, D, E, T, A, B, X(8), X(10), X(0), X(5));
+    BODY_40_59(41, B, C, D, E, T, A, X(9), X(11), X(1), X(6));
+    BODY_40_59(42, A, B, C, D, E, T, X(10), X(12), X(2), X(7));
+    BODY_40_59(43, T, A, B, C, D, E, X(11), X(13), X(3), X(8));
+    BODY_40_59(44, E, T, A, B, C, D, X(12), X(14), X(4), X(9));
+    BODY_40_59(45, D, E, T, A, B, C, X(13), X(15), X(5), X(10));
+    BODY_40_59(46, C, D, E, T, A, B, X(14), X(0), X(6), X(11));
+    BODY_40_59(47, B, C, D, E, T, A, X(15), X(1), X(7), X(12));
+    BODY_40_59(48, A, B, C, D, E, T, X(0), X(2), X(8), X(13));
+    BODY_40_59(49, T, A, B, C, D, E, X(1), X(3), X(9), X(14));
+    BODY_40_59(50, E, T, A, B, C, D, X(2), X(4), X(10), X(15));
+    BODY_40_59(51, D, E, T, A, B, C, X(3), X(5), X(11), X(0));
+    BODY_40_59(52, C, D, E, T, A, B, X(4), X(6), X(12), X(1));
+    BODY_40_59(53, B, C, D, E, T, A, X(5), X(7), X(13), X(2));
+    BODY_40_59(54, A, B, C, D, E, T, X(6), X(8), X(14), X(3));
+    BODY_40_59(55, T, A, B, C, D, E, X(7), X(9), X(15), X(4));
+    BODY_40_59(56, E, T, A, B, C, D, X(8), X(10), X(0), X(5));
+    BODY_40_59(57, D, E, T, A, B, C, X(9), X(11), X(1), X(6));
+    BODY_40_59(58, C, D, E, T, A, B, X(10), X(12), X(2), X(7));
+    BODY_40_59(59, B, C, D, E, T, A, X(11), X(13), X(3), X(8));
+
+    BODY_60_79(60, A, B, C, D, E, T, X(12), X(14), X(4), X(9));
+    BODY_60_79(61, T, A, B, C, D, E, X(13), X(15), X(5), X(10));
+    BODY_60_79(62, E, T, A, B, C, D, X(14), X(0), X(6), X(11));
+    BODY_60_79(63, D, E, T, A, B, C, X(15), X(1), X(7), X(12));
+    BODY_60_79(64, C, D, E, T, A, B, X(0), X(2), X(8), X(13));
+    BODY_60_79(65, B, C, D, E, T, A, X(1), X(3), X(9), X(14));
+    BODY_60_79(66, A, B, C, D, E, T, X(2), X(4), X(10), X(15));
+    BODY_60_79(67, T, A, B, C, D, E, X(3), X(5), X(11), X(0));
+    BODY_60_79(68, E, T, A, B, C, D, X(4), X(6), X(12), X(1));
+    BODY_60_79(69, D, E, T, A, B, C, X(5), X(7), X(13), X(2));
+    BODY_60_79(70, C, D, E, T, A, B, X(6), X(8), X(14), X(3));
+    BODY_60_79(71, B, C, D, E, T, A, X(7), X(9), X(15), X(4));
+    BODY_60_79(72, A, B, C, D, E, T, X(8), X(10), X(0), X(5));
+    BODY_60_79(73, T, A, B, C, D, E, X(9), X(11), X(1), X(6));
+    BODY_60_79(74, E, T, A, B, C, D, X(10), X(12), X(2), X(7));
+    BODY_60_79(75, D, E, T, A, B, C, X(11), X(13), X(3), X(8));
+    BODY_60_79(76, C, D, E, T, A, B, X(12), X(14), X(4), X(9));
+    BODY_60_79(77, B, C, D, E, T, A, X(13), X(15), X(5), X(10));
+    BODY_60_79(78, A, B, C, D, E, T, X(14), X(0), X(6), X(11));
+    BODY_60_79(79, T, A, B, C, D, E, X(15), X(1), X(7), X(12));
+
+    state[0] = (state[0] + E) & 0xffffffffL;
+    state[1] = (state[1] + T) & 0xffffffffL;
+    state[2] = (state[2] + A) & 0xffffffffL;
+    state[3] = (state[3] + B) & 0xffffffffL;
+    state[4] = (state[4] + C) & 0xffffffffL;
+
+    if (--num == 0) {
+      break;
+    }
+
+    A = state[0];
+    B = state[1];
+    C = state[2];
+    D = state[3];
+    E = state[4];
+  }
+}
+#endif
+
+#undef DATA_ORDER_IS_BIG_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_MAKE_STRING
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_BLOCK_DATA_ORDER
+#undef ROTATE
+#undef Xupdate
+#undef K_00_19
+#undef K_20_39
+#undef K_40_59
+#undef K_60_79
+#undef F_00_19
+#undef F_20_39
+#undef F_40_59
+#undef F_60_79
+#undef BODY_00_15
+#undef BODY_16_19
+#undef BODY_20_31
+#undef BODY_32_39
+#undef BODY_40_59
+#undef BODY_60_79
+#undef X
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c
new file mode 100644
index 0000000..fb73553
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c	
@@ -0,0 +1,343 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/sha.h>
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int SHA224_Init(SHA256_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
+  sha->h[0] = 0xc1059ed8UL;
+  sha->h[1] = 0x367cd507UL;
+  sha->h[2] = 0x3070dd17UL;
+  sha->h[3] = 0xf70e5939UL;
+  sha->h[4] = 0xffc00b31UL;
+  sha->h[5] = 0x68581511UL;
+  sha->h[6] = 0x64f98fa7UL;
+  sha->h[7] = 0xbefa4fa4UL;
+  sha->md_len = SHA224_DIGEST_LENGTH;
+  return 1;
+}
+
+int SHA256_Init(SHA256_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
+  sha->h[0] = 0x6a09e667UL;
+  sha->h[1] = 0xbb67ae85UL;
+  sha->h[2] = 0x3c6ef372UL;
+  sha->h[3] = 0xa54ff53aUL;
+  sha->h[4] = 0x510e527fUL;
+  sha->h[5] = 0x9b05688cUL;
+  sha->h[6] = 0x1f83d9abUL;
+  sha->h[7] = 0x5be0cd19UL;
+  sha->md_len = SHA256_DIGEST_LENGTH;
+  return 1;
+}
+
+uint8_t *SHA224(const uint8_t *data, size_t len,
+                uint8_t out[SHA224_DIGEST_LENGTH]) {
+  SHA256_CTX ctx;
+  SHA224_Init(&ctx);
+  SHA224_Update(&ctx, data, len);
+  SHA224_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+uint8_t *SHA256(const uint8_t *data, size_t len,
+                uint8_t out[SHA256_DIGEST_LENGTH]) {
+  SHA256_CTX ctx;
+  SHA256_Init(&ctx);
+  SHA256_Update(&ctx, data, len);
+  SHA256_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+int SHA224_Update(SHA256_CTX *ctx, const void *data, size_t len) {
+  return SHA256_Update(ctx, data, len);
+}
+
+int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx) {
+  // SHA224_Init sets |ctx->md_len| to |SHA224_DIGEST_LENGTH|, so this has a
+  // smaller output.
+  return SHA256_Final(out, ctx);
+}
+
+#define DATA_ORDER_IS_BIG_ENDIAN
+
+#define HASH_CTX SHA256_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 32
+
+// Note that FIPS180-2 discusses "Truncation of the Hash Function Output."
+// default: case below covers for it. It's not clear however if it's permitted
+// to truncate to amount of bytes not divisible by 4. I bet not, but if it is,
+// then default: case shall be extended. For reference. Idea behind separate
+// cases for pre-defined lenghts is to let the compiler decide if it's
+// appropriate to unroll small loops.
+//
+// TODO(davidben): The small |md_len| case is one of the few places a low-level
+// hash 'final' function can fail. This should never happen.
+#define HASH_MAKE_STRING(c, s)                              \
+  do {                                                      \
+    uint32_t ll;                                            \
+    unsigned int nn;                                        \
+    switch ((c)->md_len) {                                  \
+      case SHA224_DIGEST_LENGTH:                            \
+        for (nn = 0; nn < SHA224_DIGEST_LENGTH / 4; nn++) { \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+      case SHA256_DIGEST_LENGTH:                            \
+        for (nn = 0; nn < SHA256_DIGEST_LENGTH / 4; nn++) { \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+      default:                                              \
+        if ((c)->md_len > SHA256_DIGEST_LENGTH) {           \
+          return 0;                                         \
+        }                                                   \
+        for (nn = 0; nn < (c)->md_len / 4; nn++) {          \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+    }                                                       \
+  } while (0)
+
+
+#define HASH_UPDATE SHA256_Update
+#define HASH_TRANSFORM SHA256_Transform
+#define HASH_FINAL SHA256_Final
+#define HASH_BLOCK_DATA_ORDER sha256_block_data_order
+#ifndef SHA256_ASM
+static void sha256_block_data_order(uint32_t *state, const uint8_t *in,
+                                    size_t num);
+#endif
+
+#include "../digest/md32_common.h"
+
+#ifndef SHA256_ASM
+static const uint32_t K256[64] = {
+    0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
+    0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
+    0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
+    0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+    0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
+    0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
+    0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
+    0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+    0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
+    0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
+    0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
+    0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+    0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL};
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+// FIPS specification refers to right rotations, while our ROTATE macro
+// is left one. This is why you might notice that rotation coefficients
+// differ from those observed in FIPS document by 32-N...
+#define Sigma0(x) (ROTATE((x), 30) ^ ROTATE((x), 19) ^ ROTATE((x), 10))
+#define Sigma1(x) (ROTATE((x), 26) ^ ROTATE((x), 21) ^ ROTATE((x), 7))
+#define sigma0(x) (ROTATE((x), 25) ^ ROTATE((x), 14) ^ ((x) >> 3))
+#define sigma1(x) (ROTATE((x), 15) ^ ROTATE((x), 13) ^ ((x) >> 10))
+
+#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+#define ROUND_00_15(i, a, b, c, d, e, f, g, h)   \
+  do {                                           \
+    T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \
+    h = Sigma0(a) + Maj(a, b, c);                \
+    d += T1;                                     \
+    h += T1;                                     \
+  } while (0)
+
+#define ROUND_16_63(i, a, b, c, d, e, f, g, h, X)      \
+  do {                                                 \
+    s0 = X[(i + 1) & 0x0f];                            \
+    s0 = sigma0(s0);                                   \
+    s1 = X[(i + 14) & 0x0f];                           \
+    s1 = sigma1(s1);                                   \
+    T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \
+    ROUND_00_15(i, a, b, c, d, e, f, g, h);            \
+  } while (0)
+
+static void sha256_block_data_order(uint32_t *state, const uint8_t *data,
+                                    size_t num) {
+  uint32_t a, b, c, d, e, f, g, h, s0, s1, T1;
+  uint32_t X[16];
+  int i;
+
+  while (num--) {
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    f = state[5];
+    g = state[6];
+    h = state[7];
+
+    uint32_t l;
+
+    HOST_c2l(data, l);
+    T1 = X[0] = l;
+    ROUND_00_15(0, a, b, c, d, e, f, g, h);
+    HOST_c2l(data, l);
+    T1 = X[1] = l;
+    ROUND_00_15(1, h, a, b, c, d, e, f, g);
+    HOST_c2l(data, l);
+    T1 = X[2] = l;
+    ROUND_00_15(2, g, h, a, b, c, d, e, f);
+    HOST_c2l(data, l);
+    T1 = X[3] = l;
+    ROUND_00_15(3, f, g, h, a, b, c, d, e);
+    HOST_c2l(data, l);
+    T1 = X[4] = l;
+    ROUND_00_15(4, e, f, g, h, a, b, c, d);
+    HOST_c2l(data, l);
+    T1 = X[5] = l;
+    ROUND_00_15(5, d, e, f, g, h, a, b, c);
+    HOST_c2l(data, l);
+    T1 = X[6] = l;
+    ROUND_00_15(6, c, d, e, f, g, h, a, b);
+    HOST_c2l(data, l);
+    T1 = X[7] = l;
+    ROUND_00_15(7, b, c, d, e, f, g, h, a);
+    HOST_c2l(data, l);
+    T1 = X[8] = l;
+    ROUND_00_15(8, a, b, c, d, e, f, g, h);
+    HOST_c2l(data, l);
+    T1 = X[9] = l;
+    ROUND_00_15(9, h, a, b, c, d, e, f, g);
+    HOST_c2l(data, l);
+    T1 = X[10] = l;
+    ROUND_00_15(10, g, h, a, b, c, d, e, f);
+    HOST_c2l(data, l);
+    T1 = X[11] = l;
+    ROUND_00_15(11, f, g, h, a, b, c, d, e);
+    HOST_c2l(data, l);
+    T1 = X[12] = l;
+    ROUND_00_15(12, e, f, g, h, a, b, c, d);
+    HOST_c2l(data, l);
+    T1 = X[13] = l;
+    ROUND_00_15(13, d, e, f, g, h, a, b, c);
+    HOST_c2l(data, l);
+    T1 = X[14] = l;
+    ROUND_00_15(14, c, d, e, f, g, h, a, b);
+    HOST_c2l(data, l);
+    T1 = X[15] = l;
+    ROUND_00_15(15, b, c, d, e, f, g, h, a);
+
+    for (i = 16; i < 64; i += 8) {
+      ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X);
+      ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X);
+      ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X);
+      ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X);
+      ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X);
+      ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X);
+      ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X);
+      ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X);
+    }
+
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    state[5] += f;
+    state[6] += g;
+    state[7] += h;
+  }
+}
+
+#endif  // !SHA256_ASM
+
+void SHA256_TransformBlocks(uint32_t state[8], const uint8_t *data,
+                            size_t num_blocks) {
+  sha256_block_data_order(state, data, num_blocks);
+}
+
+#undef DATA_ORDER_IS_BIG_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_MAKE_STRING
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_BLOCK_DATA_ORDER
+#undef ROTATE
+#undef Sigma0
+#undef Sigma1
+#undef sigma0
+#undef sigma1
+#undef Ch
+#undef Maj
+#undef ROUND_00_15
+#undef ROUND_16_63
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c.grpc_back
new file mode 100644
index 0000000..0e42446
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha256.c.grpc_back	
@@ -0,0 +1,343 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/sha.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+int SHA224_Init(SHA256_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
+  sha->h[0] = 0xc1059ed8UL;
+  sha->h[1] = 0x367cd507UL;
+  sha->h[2] = 0x3070dd17UL;
+  sha->h[3] = 0xf70e5939UL;
+  sha->h[4] = 0xffc00b31UL;
+  sha->h[5] = 0x68581511UL;
+  sha->h[6] = 0x64f98fa7UL;
+  sha->h[7] = 0xbefa4fa4UL;
+  sha->md_len = SHA224_DIGEST_LENGTH;
+  return 1;
+}
+
+int SHA256_Init(SHA256_CTX *sha) {
+  OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
+  sha->h[0] = 0x6a09e667UL;
+  sha->h[1] = 0xbb67ae85UL;
+  sha->h[2] = 0x3c6ef372UL;
+  sha->h[3] = 0xa54ff53aUL;
+  sha->h[4] = 0x510e527fUL;
+  sha->h[5] = 0x9b05688cUL;
+  sha->h[6] = 0x1f83d9abUL;
+  sha->h[7] = 0x5be0cd19UL;
+  sha->md_len = SHA256_DIGEST_LENGTH;
+  return 1;
+}
+
+uint8_t *SHA224(const uint8_t *data, size_t len,
+                uint8_t out[SHA224_DIGEST_LENGTH]) {
+  SHA256_CTX ctx;
+  SHA224_Init(&ctx);
+  SHA224_Update(&ctx, data, len);
+  SHA224_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+uint8_t *SHA256(const uint8_t *data, size_t len,
+                uint8_t out[SHA256_DIGEST_LENGTH]) {
+  SHA256_CTX ctx;
+  SHA256_Init(&ctx);
+  SHA256_Update(&ctx, data, len);
+  SHA256_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+int SHA224_Update(SHA256_CTX *ctx, const void *data, size_t len) {
+  return SHA256_Update(ctx, data, len);
+}
+
+int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx) {
+  // SHA224_Init sets |ctx->md_len| to |SHA224_DIGEST_LENGTH|, so this has a
+  // smaller output.
+  return SHA256_Final(out, ctx);
+}
+
+#define DATA_ORDER_IS_BIG_ENDIAN
+
+#define HASH_CTX SHA256_CTX
+#define HASH_CBLOCK 64
+#define HASH_DIGEST_LENGTH 32
+
+// Note that FIPS180-2 discusses "Truncation of the Hash Function Output."
+// default: case below covers for it. It's not clear however if it's permitted
+// to truncate to amount of bytes not divisible by 4. I bet not, but if it is,
+// then default: case shall be extended. For reference. Idea behind separate
+// cases for pre-defined lenghts is to let the compiler decide if it's
+// appropriate to unroll small loops.
+//
+// TODO(davidben): The small |md_len| case is one of the few places a low-level
+// hash 'final' function can fail. This should never happen.
+#define HASH_MAKE_STRING(c, s)                              \
+  do {                                                      \
+    uint32_t ll;                                            \
+    unsigned int nn;                                        \
+    switch ((c)->md_len) {                                  \
+      case SHA224_DIGEST_LENGTH:                            \
+        for (nn = 0; nn < SHA224_DIGEST_LENGTH / 4; nn++) { \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+      case SHA256_DIGEST_LENGTH:                            \
+        for (nn = 0; nn < SHA256_DIGEST_LENGTH / 4; nn++) { \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+      default:                                              \
+        if ((c)->md_len > SHA256_DIGEST_LENGTH) {           \
+          return 0;                                         \
+        }                                                   \
+        for (nn = 0; nn < (c)->md_len / 4; nn++) {          \
+          ll = (c)->h[nn];                                  \
+          HOST_l2c(ll, (s));                                \
+        }                                                   \
+        break;                                              \
+    }                                                       \
+  } while (0)
+
+
+#define HASH_UPDATE SHA256_Update
+#define HASH_TRANSFORM SHA256_Transform
+#define HASH_FINAL SHA256_Final
+#define HASH_BLOCK_DATA_ORDER sha256_block_data_order
+#ifndef SHA256_ASM
+static void sha256_block_data_order(uint32_t *state, const uint8_t *in,
+                                    size_t num);
+#endif
+
+#include "../digest/md32_common.h"
+
+#ifndef SHA256_ASM
+static const uint32_t K256[64] = {
+    0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
+    0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
+    0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
+    0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+    0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
+    0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
+    0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
+    0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+    0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
+    0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
+    0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
+    0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+    0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL};
+
+#define ROTATE(a, n) (((a) << (n)) | ((a) >> (32 - (n))))
+
+// FIPS specification refers to right rotations, while our ROTATE macro
+// is left one. This is why you might notice that rotation coefficients
+// differ from those observed in FIPS document by 32-N...
+#define Sigma0(x) (ROTATE((x), 30) ^ ROTATE((x), 19) ^ ROTATE((x), 10))
+#define Sigma1(x) (ROTATE((x), 26) ^ ROTATE((x), 21) ^ ROTATE((x), 7))
+#define sigma0(x) (ROTATE((x), 25) ^ ROTATE((x), 14) ^ ((x) >> 3))
+#define sigma1(x) (ROTATE((x), 15) ^ ROTATE((x), 13) ^ ((x) >> 10))
+
+#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+#define ROUND_00_15(i, a, b, c, d, e, f, g, h)   \
+  do {                                           \
+    T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \
+    h = Sigma0(a) + Maj(a, b, c);                \
+    d += T1;                                     \
+    h += T1;                                     \
+  } while (0)
+
+#define ROUND_16_63(i, a, b, c, d, e, f, g, h, X)      \
+  do {                                                 \
+    s0 = X[(i + 1) & 0x0f];                            \
+    s0 = sigma0(s0);                                   \
+    s1 = X[(i + 14) & 0x0f];                           \
+    s1 = sigma1(s1);                                   \
+    T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \
+    ROUND_00_15(i, a, b, c, d, e, f, g, h);            \
+  } while (0)
+
+static void sha256_block_data_order(uint32_t *state, const uint8_t *data,
+                                    size_t num) {
+  uint32_t a, b, c, d, e, f, g, h, s0, s1, T1;
+  uint32_t X[16];
+  int i;
+
+  while (num--) {
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    f = state[5];
+    g = state[6];
+    h = state[7];
+
+    uint32_t l;
+
+    HOST_c2l(data, l);
+    T1 = X[0] = l;
+    ROUND_00_15(0, a, b, c, d, e, f, g, h);
+    HOST_c2l(data, l);
+    T1 = X[1] = l;
+    ROUND_00_15(1, h, a, b, c, d, e, f, g);
+    HOST_c2l(data, l);
+    T1 = X[2] = l;
+    ROUND_00_15(2, g, h, a, b, c, d, e, f);
+    HOST_c2l(data, l);
+    T1 = X[3] = l;
+    ROUND_00_15(3, f, g, h, a, b, c, d, e);
+    HOST_c2l(data, l);
+    T1 = X[4] = l;
+    ROUND_00_15(4, e, f, g, h, a, b, c, d);
+    HOST_c2l(data, l);
+    T1 = X[5] = l;
+    ROUND_00_15(5, d, e, f, g, h, a, b, c);
+    HOST_c2l(data, l);
+    T1 = X[6] = l;
+    ROUND_00_15(6, c, d, e, f, g, h, a, b);
+    HOST_c2l(data, l);
+    T1 = X[7] = l;
+    ROUND_00_15(7, b, c, d, e, f, g, h, a);
+    HOST_c2l(data, l);
+    T1 = X[8] = l;
+    ROUND_00_15(8, a, b, c, d, e, f, g, h);
+    HOST_c2l(data, l);
+    T1 = X[9] = l;
+    ROUND_00_15(9, h, a, b, c, d, e, f, g);
+    HOST_c2l(data, l);
+    T1 = X[10] = l;
+    ROUND_00_15(10, g, h, a, b, c, d, e, f);
+    HOST_c2l(data, l);
+    T1 = X[11] = l;
+    ROUND_00_15(11, f, g, h, a, b, c, d, e);
+    HOST_c2l(data, l);
+    T1 = X[12] = l;
+    ROUND_00_15(12, e, f, g, h, a, b, c, d);
+    HOST_c2l(data, l);
+    T1 = X[13] = l;
+    ROUND_00_15(13, d, e, f, g, h, a, b, c);
+    HOST_c2l(data, l);
+    T1 = X[14] = l;
+    ROUND_00_15(14, c, d, e, f, g, h, a, b);
+    HOST_c2l(data, l);
+    T1 = X[15] = l;
+    ROUND_00_15(15, b, c, d, e, f, g, h, a);
+
+    for (i = 16; i < 64; i += 8) {
+      ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X);
+      ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X);
+      ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X);
+      ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X);
+      ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X);
+      ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X);
+      ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X);
+      ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X);
+    }
+
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    state[5] += f;
+    state[6] += g;
+    state[7] += h;
+  }
+}
+
+#endif  // !SHA256_ASM
+
+void SHA256_TransformBlocks(uint32_t state[8], const uint8_t *data,
+                            size_t num_blocks) {
+  sha256_block_data_order(state, data, num_blocks);
+}
+
+#undef DATA_ORDER_IS_BIG_ENDIAN
+#undef HASH_CTX
+#undef HASH_CBLOCK
+#undef HASH_DIGEST_LENGTH
+#undef HASH_MAKE_STRING
+#undef HASH_UPDATE
+#undef HASH_TRANSFORM
+#undef HASH_FINAL
+#undef HASH_BLOCK_DATA_ORDER
+#undef ROTATE
+#undef Sigma0
+#undef Sigma1
+#undef sigma0
+#undef sigma1
+#undef Ch
+#undef Maj
+#undef ROUND_00_15
+#undef ROUND_16_63
+#undef HOST_c2l
+#undef HOST_l2c
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c
new file mode 100644
index 0000000..7a0b89f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c	
@@ -0,0 +1,535 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/sha.h>
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// The 32-bit hash algorithms share a common byte-order neutral collector and
+// padding function implementations that operate on unaligned data,
+// ../digest/md32_common.h. SHA-512 is the only 64-bit hash algorithm, as of
+// this writing, so there is no need for a common collector/padding
+// implementation yet.
+
+int SHA384_Init(SHA512_CTX *sha) {
+  sha->h[0] = UINT64_C(0xcbbb9d5dc1059ed8);
+  sha->h[1] = UINT64_C(0x629a292a367cd507);
+  sha->h[2] = UINT64_C(0x9159015a3070dd17);
+  sha->h[3] = UINT64_C(0x152fecd8f70e5939);
+  sha->h[4] = UINT64_C(0x67332667ffc00b31);
+  sha->h[5] = UINT64_C(0x8eb44a8768581511);
+  sha->h[6] = UINT64_C(0xdb0c2e0d64f98fa7);
+  sha->h[7] = UINT64_C(0x47b5481dbefa4fa4);
+
+  sha->Nl = 0;
+  sha->Nh = 0;
+  sha->num = 0;
+  sha->md_len = SHA384_DIGEST_LENGTH;
+  return 1;
+}
+
+
+int SHA512_Init(SHA512_CTX *sha) {
+  sha->h[0] = UINT64_C(0x6a09e667f3bcc908);
+  sha->h[1] = UINT64_C(0xbb67ae8584caa73b);
+  sha->h[2] = UINT64_C(0x3c6ef372fe94f82b);
+  sha->h[3] = UINT64_C(0xa54ff53a5f1d36f1);
+  sha->h[4] = UINT64_C(0x510e527fade682d1);
+  sha->h[5] = UINT64_C(0x9b05688c2b3e6c1f);
+  sha->h[6] = UINT64_C(0x1f83d9abfb41bd6b);
+  sha->h[7] = UINT64_C(0x5be0cd19137e2179);
+
+  sha->Nl = 0;
+  sha->Nh = 0;
+  sha->num = 0;
+  sha->md_len = SHA512_DIGEST_LENGTH;
+  return 1;
+}
+
+uint8_t *SHA384(const uint8_t *data, size_t len,
+                uint8_t out[SHA384_DIGEST_LENGTH]) {
+  SHA512_CTX ctx;
+  SHA384_Init(&ctx);
+  SHA384_Update(&ctx, data, len);
+  SHA384_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+uint8_t *SHA512(const uint8_t *data, size_t len,
+                uint8_t out[SHA512_DIGEST_LENGTH]) {
+  SHA512_CTX ctx;
+  SHA512_Init(&ctx);
+  SHA512_Update(&ctx, data, len);
+  SHA512_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+#if !defined(SHA512_ASM)
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num_blocks);
+#endif
+
+
+int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH], SHA512_CTX *sha) {
+  // |SHA384_Init| sets |sha->md_len| to |SHA384_DIGEST_LENGTH|, so this has a
+  // |smaller output.
+  return SHA512_Final(out, sha);
+}
+
+int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len) {
+  return SHA512_Update(sha, data, len);
+}
+
+void SHA512_Transform(SHA512_CTX *c, const uint8_t block[SHA512_CBLOCK]) {
+  sha512_block_data_order(c->h, block, 1);
+}
+
+int SHA512_Update(SHA512_CTX *c, const void *in_data, size_t len) {
+  uint64_t l;
+  uint8_t *p = c->p;
+  const uint8_t *data = in_data;
+
+  if (len == 0) {
+    return 1;
+  }
+
+  l = (c->Nl + (((uint64_t)len) << 3)) & UINT64_C(0xffffffffffffffff);
+  if (l < c->Nl) {
+    c->Nh++;
+  }
+  if (sizeof(len) >= 8) {
+    c->Nh += (((uint64_t)len) >> 61);
+  }
+  c->Nl = l;
+
+  if (c->num != 0) {
+    size_t n = sizeof(c->p) - c->num;
+
+    if (len < n) {
+      OPENSSL_memcpy(p + c->num, data, len);
+      c->num += (unsigned int)len;
+      return 1;
+    } else {
+      OPENSSL_memcpy(p + c->num, data, n), c->num = 0;
+      len -= n;
+      data += n;
+      sha512_block_data_order(c->h, p, 1);
+    }
+  }
+
+  if (len >= sizeof(c->p)) {
+    sha512_block_data_order(c->h, data, len / sizeof(c->p));
+    data += len;
+    len %= sizeof(c->p);
+    data -= len;
+  }
+
+  if (len != 0) {
+    OPENSSL_memcpy(p, data, len);
+    c->num = (int)len;
+  }
+
+  return 1;
+}
+
+int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH], SHA512_CTX *sha) {
+  uint8_t *p = sha->p;
+  size_t n = sha->num;
+
+  p[n] = 0x80;  // There always is a room for one
+  n++;
+  if (n > (sizeof(sha->p) - 16)) {
+    OPENSSL_memset(p + n, 0, sizeof(sha->p) - n);
+    n = 0;
+    sha512_block_data_order(sha->h, p, 1);
+  }
+
+  OPENSSL_memset(p + n, 0, sizeof(sha->p) - 16 - n);
+  p[sizeof(sha->p) - 1] = (uint8_t)(sha->Nl);
+  p[sizeof(sha->p) - 2] = (uint8_t)(sha->Nl >> 8);
+  p[sizeof(sha->p) - 3] = (uint8_t)(sha->Nl >> 16);
+  p[sizeof(sha->p) - 4] = (uint8_t)(sha->Nl >> 24);
+  p[sizeof(sha->p) - 5] = (uint8_t)(sha->Nl >> 32);
+  p[sizeof(sha->p) - 6] = (uint8_t)(sha->Nl >> 40);
+  p[sizeof(sha->p) - 7] = (uint8_t)(sha->Nl >> 48);
+  p[sizeof(sha->p) - 8] = (uint8_t)(sha->Nl >> 56);
+  p[sizeof(sha->p) - 9] = (uint8_t)(sha->Nh);
+  p[sizeof(sha->p) - 10] = (uint8_t)(sha->Nh >> 8);
+  p[sizeof(sha->p) - 11] = (uint8_t)(sha->Nh >> 16);
+  p[sizeof(sha->p) - 12] = (uint8_t)(sha->Nh >> 24);
+  p[sizeof(sha->p) - 13] = (uint8_t)(sha->Nh >> 32);
+  p[sizeof(sha->p) - 14] = (uint8_t)(sha->Nh >> 40);
+  p[sizeof(sha->p) - 15] = (uint8_t)(sha->Nh >> 48);
+  p[sizeof(sha->p) - 16] = (uint8_t)(sha->Nh >> 56);
+
+  sha512_block_data_order(sha->h, p, 1);
+
+  if (out == NULL) {
+    // TODO(davidben): This NULL check is absent in other low-level hash 'final'
+    // functions and is one of the few places one can fail.
+    return 0;
+  }
+
+  switch (sha->md_len) {
+    // Let compiler decide if it's appropriate to unroll...
+    case SHA384_DIGEST_LENGTH:
+      for (n = 0; n < SHA384_DIGEST_LENGTH / 8; n++) {
+        uint64_t t = sha->h[n];
+
+        *(out++) = (uint8_t)(t >> 56);
+        *(out++) = (uint8_t)(t >> 48);
+        *(out++) = (uint8_t)(t >> 40);
+        *(out++) = (uint8_t)(t >> 32);
+        *(out++) = (uint8_t)(t >> 24);
+        *(out++) = (uint8_t)(t >> 16);
+        *(out++) = (uint8_t)(t >> 8);
+        *(out++) = (uint8_t)(t);
+      }
+      break;
+    case SHA512_DIGEST_LENGTH:
+      for (n = 0; n < SHA512_DIGEST_LENGTH / 8; n++) {
+        uint64_t t = sha->h[n];
+
+        *(out++) = (uint8_t)(t >> 56);
+        *(out++) = (uint8_t)(t >> 48);
+        *(out++) = (uint8_t)(t >> 40);
+        *(out++) = (uint8_t)(t >> 32);
+        *(out++) = (uint8_t)(t >> 24);
+        *(out++) = (uint8_t)(t >> 16);
+        *(out++) = (uint8_t)(t >> 8);
+        *(out++) = (uint8_t)(t);
+      }
+      break;
+    // ... as well as make sure md_len is not abused.
+    default:
+      // TODO(davidben): This bad |md_len| case is one of the few places a
+      // low-level hash 'final' function can fail. This should never happen.
+      return 0;
+  }
+
+  return 1;
+}
+
+#ifndef SHA512_ASM
+static const uint64_t K512[80] = {
+    UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd),
+    UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
+    UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019),
+    UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
+    UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe),
+    UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
+    UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1),
+    UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
+    UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3),
+    UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
+    UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483),
+    UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
+    UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210),
+    UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
+    UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725),
+    UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
+    UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926),
+    UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
+    UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8),
+    UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
+    UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
+    UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
+    UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910),
+    UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
+    UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53),
+    UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
+    UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb),
+    UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
+    UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60),
+    UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
+    UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9),
+    UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
+    UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207),
+    UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
+    UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6),
+    UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
+    UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493),
+    UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
+    UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a),
+    UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817),
+};
+
+#if defined(__GNUC__) && __GNUC__ >= 2 && !defined(OPENSSL_NO_ASM)
+#if defined(__x86_64) || defined(__x86_64__)
+#define ROTR(a, n)                                              \
+  ({                                                            \
+    uint64_t ret;                                               \
+    __asm__("rorq %1, %0" : "=r"(ret) : "J"(n), "0"(a) : "cc"); \
+    ret;                                                        \
+  })
+#elif(defined(_ARCH_PPC) && defined(__64BIT__)) || defined(_ARCH_PPC64)
+#define ROTR(a, n)                                             \
+  ({                                                           \
+    uint64_t ret;                                              \
+    __asm__("rotrdi %0, %1, %2" : "=r"(ret) : "r"(a), "K"(n)); \
+    ret;                                                       \
+  })
+#elif defined(__aarch64__)
+#define ROTR(a, n)                                          \
+  ({                                                        \
+    uint64_t ret;                                           \
+    __asm__("ror %0, %1, %2" : "=r"(ret) : "r"(a), "I"(n)); \
+    ret;                                                    \
+  })
+#endif
+#elif defined(_MSC_VER) && defined(_WIN64)
+#pragma intrinsic(_rotr64)
+#define ROTR(a, n) _rotr64((a), n)
+#endif
+
+#ifndef ROTR
+#define ROTR(x, s) (((x) >> s) | (x) << (64 - s))
+#endif
+
+static inline uint64_t load_u64_be(const void *ptr) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, ptr, sizeof(ret));
+  return CRYPTO_bswap8(ret);
+}
+
+#define Sigma0(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39))
+#define Sigma1(x) (ROTR((x), 14) ^ ROTR((x), 18) ^ ROTR((x), 41))
+#define sigma0(x) (ROTR((x), 1) ^ ROTR((x), 8) ^ ((x) >> 7))
+#define sigma1(x) (ROTR((x), 19) ^ ROTR((x), 61) ^ ((x) >> 6))
+
+#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+
+#if defined(__i386) || defined(__i386__) || defined(_M_IX86)
+// This code should give better results on 32-bit CPU with less than
+// ~24 registers, both size and performance wise...
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num) {
+  uint64_t A, E, T;
+  uint64_t X[9 + 80], *F;
+  int i;
+
+  while (num--) {
+    F = X + 80;
+    A = state[0];
+    F[1] = state[1];
+    F[2] = state[2];
+    F[3] = state[3];
+    E = state[4];
+    F[5] = state[5];
+    F[6] = state[6];
+    F[7] = state[7];
+
+    for (i = 0; i < 16; i++, F--) {
+      T = load_u64_be(in + i * 8);
+      F[0] = A;
+      F[4] = E;
+      F[8] = T;
+      T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];
+      E = F[3] + T;
+      A = T + Sigma0(A) + Maj(A, F[1], F[2]);
+    }
+
+    for (; i < 80; i++, F--) {
+      T = sigma0(F[8 + 16 - 1]);
+      T += sigma1(F[8 + 16 - 14]);
+      T += F[8 + 16] + F[8 + 16 - 9];
+
+      F[0] = A;
+      F[4] = E;
+      F[8] = T;
+      T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];
+      E = F[3] + T;
+      A = T + Sigma0(A) + Maj(A, F[1], F[2]);
+    }
+
+    state[0] += A;
+    state[1] += F[1];
+    state[2] += F[2];
+    state[3] += F[3];
+    state[4] += E;
+    state[5] += F[5];
+    state[6] += F[6];
+    state[7] += F[7];
+
+    in += 16 * 8;
+  }
+}
+
+#else
+
+#define ROUND_00_15(i, a, b, c, d, e, f, g, h)   \
+  do {                                           \
+    T1 += h + Sigma1(e) + Ch(e, f, g) + K512[i]; \
+    h = Sigma0(a) + Maj(a, b, c);                \
+    d += T1;                                     \
+    h += T1;                                     \
+  } while (0)
+
+#define ROUND_16_80(i, j, a, b, c, d, e, f, g, h, X)   \
+  do {                                                 \
+    s0 = X[(j + 1) & 0x0f];                            \
+    s0 = sigma0(s0);                                   \
+    s1 = X[(j + 14) & 0x0f];                           \
+    s1 = sigma1(s1);                                   \
+    T1 = X[(j) & 0x0f] += s0 + s1 + X[(j + 9) & 0x0f]; \
+    ROUND_00_15(i + j, a, b, c, d, e, f, g, h);        \
+  } while (0)
+
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num) {
+  uint64_t a, b, c, d, e, f, g, h, s0, s1, T1;
+  uint64_t X[16];
+  int i;
+
+  while (num--) {
+
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    f = state[5];
+    g = state[6];
+    h = state[7];
+
+    T1 = X[0] = load_u64_be(in);
+    ROUND_00_15(0, a, b, c, d, e, f, g, h);
+    T1 = X[1] = load_u64_be(in + 8);
+    ROUND_00_15(1, h, a, b, c, d, e, f, g);
+    T1 = X[2] = load_u64_be(in + 2 * 8);
+    ROUND_00_15(2, g, h, a, b, c, d, e, f);
+    T1 = X[3] = load_u64_be(in + 3 * 8);
+    ROUND_00_15(3, f, g, h, a, b, c, d, e);
+    T1 = X[4] = load_u64_be(in + 4 * 8);
+    ROUND_00_15(4, e, f, g, h, a, b, c, d);
+    T1 = X[5] = load_u64_be(in + 5 * 8);
+    ROUND_00_15(5, d, e, f, g, h, a, b, c);
+    T1 = X[6] = load_u64_be(in + 6 * 8);
+    ROUND_00_15(6, c, d, e, f, g, h, a, b);
+    T1 = X[7] = load_u64_be(in + 7 * 8);
+    ROUND_00_15(7, b, c, d, e, f, g, h, a);
+    T1 = X[8] = load_u64_be(in + 8 * 8);
+    ROUND_00_15(8, a, b, c, d, e, f, g, h);
+    T1 = X[9] = load_u64_be(in + 9 * 8);
+    ROUND_00_15(9, h, a, b, c, d, e, f, g);
+    T1 = X[10] = load_u64_be(in + 10 * 8);
+    ROUND_00_15(10, g, h, a, b, c, d, e, f);
+    T1 = X[11] = load_u64_be(in + 11 * 8);
+    ROUND_00_15(11, f, g, h, a, b, c, d, e);
+    T1 = X[12] = load_u64_be(in + 12 * 8);
+    ROUND_00_15(12, e, f, g, h, a, b, c, d);
+    T1 = X[13] = load_u64_be(in + 13 * 8);
+    ROUND_00_15(13, d, e, f, g, h, a, b, c);
+    T1 = X[14] = load_u64_be(in + 14 * 8);
+    ROUND_00_15(14, c, d, e, f, g, h, a, b);
+    T1 = X[15] = load_u64_be(in + 15 * 8);
+    ROUND_00_15(15, b, c, d, e, f, g, h, a);
+
+    for (i = 16; i < 80; i += 16) {
+      ROUND_16_80(i, 0, a, b, c, d, e, f, g, h, X);
+      ROUND_16_80(i, 1, h, a, b, c, d, e, f, g, X);
+      ROUND_16_80(i, 2, g, h, a, b, c, d, e, f, X);
+      ROUND_16_80(i, 3, f, g, h, a, b, c, d, e, X);
+      ROUND_16_80(i, 4, e, f, g, h, a, b, c, d, X);
+      ROUND_16_80(i, 5, d, e, f, g, h, a, b, c, X);
+      ROUND_16_80(i, 6, c, d, e, f, g, h, a, b, X);
+      ROUND_16_80(i, 7, b, c, d, e, f, g, h, a, X);
+      ROUND_16_80(i, 8, a, b, c, d, e, f, g, h, X);
+      ROUND_16_80(i, 9, h, a, b, c, d, e, f, g, X);
+      ROUND_16_80(i, 10, g, h, a, b, c, d, e, f, X);
+      ROUND_16_80(i, 11, f, g, h, a, b, c, d, e, X);
+      ROUND_16_80(i, 12, e, f, g, h, a, b, c, d, X);
+      ROUND_16_80(i, 13, d, e, f, g, h, a, b, c, X);
+      ROUND_16_80(i, 14, c, d, e, f, g, h, a, b, X);
+      ROUND_16_80(i, 15, b, c, d, e, f, g, h, a, X);
+    }
+
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    state[5] += f;
+    state[6] += g;
+    state[7] += h;
+
+    in += 16 * 8;
+  }
+}
+
+#endif
+
+#endif  // !SHA512_ASM
+
+#undef ROTR
+#undef Sigma0
+#undef Sigma1
+#undef sigma0
+#undef sigma1
+#undef Ch
+#undef Maj
+#undef ROUND_00_15
+#undef ROUND_16_80
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c.grpc_back
new file mode 100644
index 0000000..848f3b6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/sha/sha512.c.grpc_back	
@@ -0,0 +1,535 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/sha.h>
+
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// The 32-bit hash algorithms share a common byte-order neutral collector and
+// padding function implementations that operate on unaligned data,
+// ../digest/md32_common.h. SHA-512 is the only 64-bit hash algorithm, as of
+// this writing, so there is no need for a common collector/padding
+// implementation yet.
+
+int SHA384_Init(SHA512_CTX *sha) {
+  sha->h[0] = UINT64_C(0xcbbb9d5dc1059ed8);
+  sha->h[1] = UINT64_C(0x629a292a367cd507);
+  sha->h[2] = UINT64_C(0x9159015a3070dd17);
+  sha->h[3] = UINT64_C(0x152fecd8f70e5939);
+  sha->h[4] = UINT64_C(0x67332667ffc00b31);
+  sha->h[5] = UINT64_C(0x8eb44a8768581511);
+  sha->h[6] = UINT64_C(0xdb0c2e0d64f98fa7);
+  sha->h[7] = UINT64_C(0x47b5481dbefa4fa4);
+
+  sha->Nl = 0;
+  sha->Nh = 0;
+  sha->num = 0;
+  sha->md_len = SHA384_DIGEST_LENGTH;
+  return 1;
+}
+
+
+int SHA512_Init(SHA512_CTX *sha) {
+  sha->h[0] = UINT64_C(0x6a09e667f3bcc908);
+  sha->h[1] = UINT64_C(0xbb67ae8584caa73b);
+  sha->h[2] = UINT64_C(0x3c6ef372fe94f82b);
+  sha->h[3] = UINT64_C(0xa54ff53a5f1d36f1);
+  sha->h[4] = UINT64_C(0x510e527fade682d1);
+  sha->h[5] = UINT64_C(0x9b05688c2b3e6c1f);
+  sha->h[6] = UINT64_C(0x1f83d9abfb41bd6b);
+  sha->h[7] = UINT64_C(0x5be0cd19137e2179);
+
+  sha->Nl = 0;
+  sha->Nh = 0;
+  sha->num = 0;
+  sha->md_len = SHA512_DIGEST_LENGTH;
+  return 1;
+}
+
+uint8_t *SHA384(const uint8_t *data, size_t len,
+                uint8_t out[SHA384_DIGEST_LENGTH]) {
+  SHA512_CTX ctx;
+  SHA384_Init(&ctx);
+  SHA384_Update(&ctx, data, len);
+  SHA384_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+uint8_t *SHA512(const uint8_t *data, size_t len,
+                uint8_t out[SHA512_DIGEST_LENGTH]) {
+  SHA512_CTX ctx;
+  SHA512_Init(&ctx);
+  SHA512_Update(&ctx, data, len);
+  SHA512_Final(out, &ctx);
+  OPENSSL_cleanse(&ctx, sizeof(ctx));
+  return out;
+}
+
+#if !defined(SHA512_ASM)
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num_blocks);
+#endif
+
+
+int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH], SHA512_CTX *sha) {
+  // |SHA384_Init| sets |sha->md_len| to |SHA384_DIGEST_LENGTH|, so this has a
+  // |smaller output.
+  return SHA512_Final(out, sha);
+}
+
+int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len) {
+  return SHA512_Update(sha, data, len);
+}
+
+void SHA512_Transform(SHA512_CTX *c, const uint8_t block[SHA512_CBLOCK]) {
+  sha512_block_data_order(c->h, block, 1);
+}
+
+int SHA512_Update(SHA512_CTX *c, const void *in_data, size_t len) {
+  uint64_t l;
+  uint8_t *p = c->p;
+  const uint8_t *data = in_data;
+
+  if (len == 0) {
+    return 1;
+  }
+
+  l = (c->Nl + (((uint64_t)len) << 3)) & UINT64_C(0xffffffffffffffff);
+  if (l < c->Nl) {
+    c->Nh++;
+  }
+  if (sizeof(len) >= 8) {
+    c->Nh += (((uint64_t)len) >> 61);
+  }
+  c->Nl = l;
+
+  if (c->num != 0) {
+    size_t n = sizeof(c->p) - c->num;
+
+    if (len < n) {
+      OPENSSL_memcpy(p + c->num, data, len);
+      c->num += (unsigned int)len;
+      return 1;
+    } else {
+      OPENSSL_memcpy(p + c->num, data, n), c->num = 0;
+      len -= n;
+      data += n;
+      sha512_block_data_order(c->h, p, 1);
+    }
+  }
+
+  if (len >= sizeof(c->p)) {
+    sha512_block_data_order(c->h, data, len / sizeof(c->p));
+    data += len;
+    len %= sizeof(c->p);
+    data -= len;
+  }
+
+  if (len != 0) {
+    OPENSSL_memcpy(p, data, len);
+    c->num = (int)len;
+  }
+
+  return 1;
+}
+
+int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH], SHA512_CTX *sha) {
+  uint8_t *p = sha->p;
+  size_t n = sha->num;
+
+  p[n] = 0x80;  // There always is a room for one
+  n++;
+  if (n > (sizeof(sha->p) - 16)) {
+    OPENSSL_memset(p + n, 0, sizeof(sha->p) - n);
+    n = 0;
+    sha512_block_data_order(sha->h, p, 1);
+  }
+
+  OPENSSL_memset(p + n, 0, sizeof(sha->p) - 16 - n);
+  p[sizeof(sha->p) - 1] = (uint8_t)(sha->Nl);
+  p[sizeof(sha->p) - 2] = (uint8_t)(sha->Nl >> 8);
+  p[sizeof(sha->p) - 3] = (uint8_t)(sha->Nl >> 16);
+  p[sizeof(sha->p) - 4] = (uint8_t)(sha->Nl >> 24);
+  p[sizeof(sha->p) - 5] = (uint8_t)(sha->Nl >> 32);
+  p[sizeof(sha->p) - 6] = (uint8_t)(sha->Nl >> 40);
+  p[sizeof(sha->p) - 7] = (uint8_t)(sha->Nl >> 48);
+  p[sizeof(sha->p) - 8] = (uint8_t)(sha->Nl >> 56);
+  p[sizeof(sha->p) - 9] = (uint8_t)(sha->Nh);
+  p[sizeof(sha->p) - 10] = (uint8_t)(sha->Nh >> 8);
+  p[sizeof(sha->p) - 11] = (uint8_t)(sha->Nh >> 16);
+  p[sizeof(sha->p) - 12] = (uint8_t)(sha->Nh >> 24);
+  p[sizeof(sha->p) - 13] = (uint8_t)(sha->Nh >> 32);
+  p[sizeof(sha->p) - 14] = (uint8_t)(sha->Nh >> 40);
+  p[sizeof(sha->p) - 15] = (uint8_t)(sha->Nh >> 48);
+  p[sizeof(sha->p) - 16] = (uint8_t)(sha->Nh >> 56);
+
+  sha512_block_data_order(sha->h, p, 1);
+
+  if (out == NULL) {
+    // TODO(davidben): This NULL check is absent in other low-level hash 'final'
+    // functions and is one of the few places one can fail.
+    return 0;
+  }
+
+  switch (sha->md_len) {
+    // Let compiler decide if it's appropriate to unroll...
+    case SHA384_DIGEST_LENGTH:
+      for (n = 0; n < SHA384_DIGEST_LENGTH / 8; n++) {
+        uint64_t t = sha->h[n];
+
+        *(out++) = (uint8_t)(t >> 56);
+        *(out++) = (uint8_t)(t >> 48);
+        *(out++) = (uint8_t)(t >> 40);
+        *(out++) = (uint8_t)(t >> 32);
+        *(out++) = (uint8_t)(t >> 24);
+        *(out++) = (uint8_t)(t >> 16);
+        *(out++) = (uint8_t)(t >> 8);
+        *(out++) = (uint8_t)(t);
+      }
+      break;
+    case SHA512_DIGEST_LENGTH:
+      for (n = 0; n < SHA512_DIGEST_LENGTH / 8; n++) {
+        uint64_t t = sha->h[n];
+
+        *(out++) = (uint8_t)(t >> 56);
+        *(out++) = (uint8_t)(t >> 48);
+        *(out++) = (uint8_t)(t >> 40);
+        *(out++) = (uint8_t)(t >> 32);
+        *(out++) = (uint8_t)(t >> 24);
+        *(out++) = (uint8_t)(t >> 16);
+        *(out++) = (uint8_t)(t >> 8);
+        *(out++) = (uint8_t)(t);
+      }
+      break;
+    // ... as well as make sure md_len is not abused.
+    default:
+      // TODO(davidben): This bad |md_len| case is one of the few places a
+      // low-level hash 'final' function can fail. This should never happen.
+      return 0;
+  }
+
+  return 1;
+}
+
+#ifndef SHA512_ASM
+static const uint64_t K512[80] = {
+    UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd),
+    UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
+    UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019),
+    UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
+    UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe),
+    UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
+    UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1),
+    UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
+    UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3),
+    UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
+    UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483),
+    UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
+    UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210),
+    UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
+    UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725),
+    UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
+    UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926),
+    UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
+    UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8),
+    UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
+    UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
+    UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
+    UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910),
+    UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
+    UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53),
+    UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
+    UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb),
+    UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
+    UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60),
+    UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
+    UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9),
+    UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
+    UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207),
+    UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
+    UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6),
+    UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
+    UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493),
+    UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
+    UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a),
+    UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817),
+};
+
+#if defined(__GNUC__) && __GNUC__ >= 2 && !defined(OPENSSL_NO_ASM)
+#if defined(__x86_64) || defined(__x86_64__)
+#define ROTR(a, n)                                              \
+  ({                                                            \
+    uint64_t ret;                                               \
+    __asm__("rorq %1, %0" : "=r"(ret) : "J"(n), "0"(a) : "cc"); \
+    ret;                                                        \
+  })
+#elif(defined(_ARCH_PPC) && defined(__64BIT__)) || defined(_ARCH_PPC64)
+#define ROTR(a, n)                                             \
+  ({                                                           \
+    uint64_t ret;                                              \
+    __asm__("rotrdi %0, %1, %2" : "=r"(ret) : "r"(a), "K"(n)); \
+    ret;                                                       \
+  })
+#elif defined(__aarch64__)
+#define ROTR(a, n)                                          \
+  ({                                                        \
+    uint64_t ret;                                           \
+    __asm__("ror %0, %1, %2" : "=r"(ret) : "r"(a), "I"(n)); \
+    ret;                                                    \
+  })
+#endif
+#elif defined(_MSC_VER) && defined(_WIN64)
+#pragma intrinsic(_rotr64)
+#define ROTR(a, n) _rotr64((a), n)
+#endif
+
+#ifndef ROTR
+#define ROTR(x, s) (((x) >> s) | (x) << (64 - s))
+#endif
+
+static inline uint64_t load_u64_be(const void *ptr) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, ptr, sizeof(ret));
+  return CRYPTO_bswap8(ret);
+}
+
+#define Sigma0(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39))
+#define Sigma1(x) (ROTR((x), 14) ^ ROTR((x), 18) ^ ROTR((x), 41))
+#define sigma0(x) (ROTR((x), 1) ^ ROTR((x), 8) ^ ((x) >> 7))
+#define sigma1(x) (ROTR((x), 19) ^ ROTR((x), 61) ^ ((x) >> 6))
+
+#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+
+#if defined(__i386) || defined(__i386__) || defined(_M_IX86)
+// This code should give better results on 32-bit CPU with less than
+// ~24 registers, both size and performance wise...
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num) {
+  uint64_t A, E, T;
+  uint64_t X[9 + 80], *F;
+  int i;
+
+  while (num--) {
+    F = X + 80;
+    A = state[0];
+    F[1] = state[1];
+    F[2] = state[2];
+    F[3] = state[3];
+    E = state[4];
+    F[5] = state[5];
+    F[6] = state[6];
+    F[7] = state[7];
+
+    for (i = 0; i < 16; i++, F--) {
+      T = load_u64_be(in + i * 8);
+      F[0] = A;
+      F[4] = E;
+      F[8] = T;
+      T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];
+      E = F[3] + T;
+      A = T + Sigma0(A) + Maj(A, F[1], F[2]);
+    }
+
+    for (; i < 80; i++, F--) {
+      T = sigma0(F[8 + 16 - 1]);
+      T += sigma1(F[8 + 16 - 14]);
+      T += F[8 + 16] + F[8 + 16 - 9];
+
+      F[0] = A;
+      F[4] = E;
+      F[8] = T;
+      T += F[7] + Sigma1(E) + Ch(E, F[5], F[6]) + K512[i];
+      E = F[3] + T;
+      A = T + Sigma0(A) + Maj(A, F[1], F[2]);
+    }
+
+    state[0] += A;
+    state[1] += F[1];
+    state[2] += F[2];
+    state[3] += F[3];
+    state[4] += E;
+    state[5] += F[5];
+    state[6] += F[6];
+    state[7] += F[7];
+
+    in += 16 * 8;
+  }
+}
+
+#else
+
+#define ROUND_00_15(i, a, b, c, d, e, f, g, h)   \
+  do {                                           \
+    T1 += h + Sigma1(e) + Ch(e, f, g) + K512[i]; \
+    h = Sigma0(a) + Maj(a, b, c);                \
+    d += T1;                                     \
+    h += T1;                                     \
+  } while (0)
+
+#define ROUND_16_80(i, j, a, b, c, d, e, f, g, h, X)   \
+  do {                                                 \
+    s0 = X[(j + 1) & 0x0f];                            \
+    s0 = sigma0(s0);                                   \
+    s1 = X[(j + 14) & 0x0f];                           \
+    s1 = sigma1(s1);                                   \
+    T1 = X[(j) & 0x0f] += s0 + s1 + X[(j + 9) & 0x0f]; \
+    ROUND_00_15(i + j, a, b, c, d, e, f, g, h);        \
+  } while (0)
+
+static void sha512_block_data_order(uint64_t *state, const uint8_t *in,
+                                    size_t num) {
+  uint64_t a, b, c, d, e, f, g, h, s0, s1, T1;
+  uint64_t X[16];
+  int i;
+
+  while (num--) {
+
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    f = state[5];
+    g = state[6];
+    h = state[7];
+
+    T1 = X[0] = load_u64_be(in);
+    ROUND_00_15(0, a, b, c, d, e, f, g, h);
+    T1 = X[1] = load_u64_be(in + 8);
+    ROUND_00_15(1, h, a, b, c, d, e, f, g);
+    T1 = X[2] = load_u64_be(in + 2 * 8);
+    ROUND_00_15(2, g, h, a, b, c, d, e, f);
+    T1 = X[3] = load_u64_be(in + 3 * 8);
+    ROUND_00_15(3, f, g, h, a, b, c, d, e);
+    T1 = X[4] = load_u64_be(in + 4 * 8);
+    ROUND_00_15(4, e, f, g, h, a, b, c, d);
+    T1 = X[5] = load_u64_be(in + 5 * 8);
+    ROUND_00_15(5, d, e, f, g, h, a, b, c);
+    T1 = X[6] = load_u64_be(in + 6 * 8);
+    ROUND_00_15(6, c, d, e, f, g, h, a, b);
+    T1 = X[7] = load_u64_be(in + 7 * 8);
+    ROUND_00_15(7, b, c, d, e, f, g, h, a);
+    T1 = X[8] = load_u64_be(in + 8 * 8);
+    ROUND_00_15(8, a, b, c, d, e, f, g, h);
+    T1 = X[9] = load_u64_be(in + 9 * 8);
+    ROUND_00_15(9, h, a, b, c, d, e, f, g);
+    T1 = X[10] = load_u64_be(in + 10 * 8);
+    ROUND_00_15(10, g, h, a, b, c, d, e, f);
+    T1 = X[11] = load_u64_be(in + 11 * 8);
+    ROUND_00_15(11, f, g, h, a, b, c, d, e);
+    T1 = X[12] = load_u64_be(in + 12 * 8);
+    ROUND_00_15(12, e, f, g, h, a, b, c, d);
+    T1 = X[13] = load_u64_be(in + 13 * 8);
+    ROUND_00_15(13, d, e, f, g, h, a, b, c);
+    T1 = X[14] = load_u64_be(in + 14 * 8);
+    ROUND_00_15(14, c, d, e, f, g, h, a, b);
+    T1 = X[15] = load_u64_be(in + 15 * 8);
+    ROUND_00_15(15, b, c, d, e, f, g, h, a);
+
+    for (i = 16; i < 80; i += 16) {
+      ROUND_16_80(i, 0, a, b, c, d, e, f, g, h, X);
+      ROUND_16_80(i, 1, h, a, b, c, d, e, f, g, X);
+      ROUND_16_80(i, 2, g, h, a, b, c, d, e, f, X);
+      ROUND_16_80(i, 3, f, g, h, a, b, c, d, e, X);
+      ROUND_16_80(i, 4, e, f, g, h, a, b, c, d, X);
+      ROUND_16_80(i, 5, d, e, f, g, h, a, b, c, X);
+      ROUND_16_80(i, 6, c, d, e, f, g, h, a, b, X);
+      ROUND_16_80(i, 7, b, c, d, e, f, g, h, a, X);
+      ROUND_16_80(i, 8, a, b, c, d, e, f, g, h, X);
+      ROUND_16_80(i, 9, h, a, b, c, d, e, f, g, X);
+      ROUND_16_80(i, 10, g, h, a, b, c, d, e, f, X);
+      ROUND_16_80(i, 11, f, g, h, a, b, c, d, e, X);
+      ROUND_16_80(i, 12, e, f, g, h, a, b, c, d, X);
+      ROUND_16_80(i, 13, d, e, f, g, h, a, b, c, X);
+      ROUND_16_80(i, 14, c, d, e, f, g, h, a, b, X);
+      ROUND_16_80(i, 15, b, c, d, e, f, g, h, a, X);
+    }
+
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    state[5] += f;
+    state[6] += g;
+    state[7] += h;
+
+    in += 16 * 8;
+  }
+}
+
+#endif
+
+#endif  // !SHA512_ASM
+
+#undef ROTR
+#undef Sigma0
+#undef Sigma1
+#undef sigma0
+#undef sigma1
+#undef Ch
+#undef Maj
+#undef ROUND_00_15
+#undef ROUND_16_80
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h
new file mode 100644
index 0000000..ae3ab7f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h	
@@ -0,0 +1,39 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// tls1_prf calculates |out_len| bytes of the TLS PDF, using |digest|, and
+// writes them to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CRYPTO_tls1_prf(const EVP_MD *digest,
+                                   uint8_t *out, size_t out_len,
+                                   const uint8_t *secret, size_t secret_len,
+                                   const char *label, size_t label_len,
+                                   const uint8_t *seed1, size_t seed1_len,
+                                   const uint8_t *seed2, size_t seed2_len);
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h.grpc_back
new file mode 100644
index 0000000..ef642a6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/internal.h.grpc_back	
@@ -0,0 +1,39 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// tls1_prf calculates |out_len| bytes of the TLS PDF, using |digest|, and
+// writes them to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CRYPTO_tls1_prf(const EVP_MD *digest,
+                                   uint8_t *out, size_t out_len,
+                                   const uint8_t *secret, size_t secret_len,
+                                   const char *label, size_t label_len,
+                                   const uint8_t *seed1, size_t seed1_len,
+                                   const uint8_t *seed2, size_t seed2_len);
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c
new file mode 100644
index 0000000..07e2e4d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c	
@@ -0,0 +1,165 @@
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <assert.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// tls1_P_hash computes the TLS P_<hash> function as described in RFC 5246,
+// section 5. It XORs |out_len| bytes to |out|, using |md| as the hash and
+// |secret| as the secret. |label|, |seed1|, and |seed2| are concatenated to
+// form the seed parameter. It returns true on success and false on failure.
+static int tls1_P_hash(uint8_t *out, size_t out_len,
+                       const EVP_MD *md,
+                       const uint8_t *secret, size_t secret_len,
+                       const char *label, size_t label_len,
+                       const uint8_t *seed1, size_t seed1_len,
+                       const uint8_t *seed2, size_t seed2_len) {
+  HMAC_CTX ctx, ctx_tmp, ctx_init;
+  uint8_t A1[EVP_MAX_MD_SIZE];
+  unsigned A1_len;
+  int ret = 0;
+
+  const size_t chunk = EVP_MD_size(md);
+  HMAC_CTX_init(&ctx);
+  HMAC_CTX_init(&ctx_tmp);
+  HMAC_CTX_init(&ctx_init);
+
+  if (!HMAC_Init_ex(&ctx_init, secret, secret_len, md, NULL) ||
+      !HMAC_CTX_copy_ex(&ctx, &ctx_init) ||
+      !HMAC_Update(&ctx, (const uint8_t *) label, label_len) ||
+      !HMAC_Update(&ctx, seed1, seed1_len) ||
+      !HMAC_Update(&ctx, seed2, seed2_len) ||
+      !HMAC_Final(&ctx, A1, &A1_len)) {
+    goto err;
+  }
+
+  for (;;) {
+    unsigned len;
+    uint8_t hmac[EVP_MAX_MD_SIZE];
+    if (!HMAC_CTX_copy_ex(&ctx, &ctx_init) ||
+        !HMAC_Update(&ctx, A1, A1_len) ||
+        // Save a copy of |ctx| to compute the next A1 value below.
+        (out_len > chunk && !HMAC_CTX_copy_ex(&ctx_tmp, &ctx)) ||
+        !HMAC_Update(&ctx, (const uint8_t *) label, label_len) ||
+        !HMAC_Update(&ctx, seed1, seed1_len) ||
+        !HMAC_Update(&ctx, seed2, seed2_len) ||
+        !HMAC_Final(&ctx, hmac, &len)) {
+      goto err;
+    }
+    assert(len == chunk);
+
+    // XOR the result into |out|.
+    if (len > out_len) {
+      len = out_len;
+    }
+    for (unsigned i = 0; i < len; i++) {
+      out[i] ^= hmac[i];
+    }
+    out += len;
+    out_len -= len;
+
+    if (out_len == 0) {
+      break;
+    }
+
+    // Calculate the next A1 value.
+    if (!HMAC_Final(&ctx_tmp, A1, &A1_len)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(A1, sizeof(A1));
+  HMAC_CTX_cleanup(&ctx);
+  HMAC_CTX_cleanup(&ctx_tmp);
+  HMAC_CTX_cleanup(&ctx_init);
+  return ret;
+}
+
+int CRYPTO_tls1_prf(const EVP_MD *digest,
+                    uint8_t *out, size_t out_len,
+                    const uint8_t *secret, size_t secret_len,
+                    const char *label, size_t label_len,
+                    const uint8_t *seed1, size_t seed1_len,
+                    const uint8_t *seed2, size_t seed2_len) {
+  if (out_len == 0) {
+    return 1;
+  }
+
+  OPENSSL_memset(out, 0, out_len);
+
+  if (digest == EVP_md5_sha1()) {
+    // If using the MD5/SHA1 PRF, |secret| is partitioned between MD5 and SHA-1.
+    size_t secret_half = secret_len - (secret_len / 2);
+    if (!tls1_P_hash(out, out_len, EVP_md5(), secret, secret_half, label,
+                     label_len, seed1, seed1_len, seed2, seed2_len)) {
+      return 0;
+    }
+
+    // Note that, if |secret_len| is odd, the two halves share a byte.
+    secret += secret_len - secret_half;
+    secret_len = secret_half;
+    digest = EVP_sha1();
+  }
+
+  return tls1_P_hash(out, out_len, digest, secret, secret_len, label, label_len,
+                     seed1, seed1_len, seed2, seed2_len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c.grpc_back
new file mode 100644
index 0000000..347e998
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/fipsmodule/tls/kdf.c.grpc_back	
@@ -0,0 +1,165 @@
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <assert.h>
+
+#include <openssl/digest.h>
+#include <openssl/hmac.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../../internal.h"
+
+
+// tls1_P_hash computes the TLS P_<hash> function as described in RFC 5246,
+// section 5. It XORs |out_len| bytes to |out|, using |md| as the hash and
+// |secret| as the secret. |label|, |seed1|, and |seed2| are concatenated to
+// form the seed parameter. It returns true on success and false on failure.
+static int tls1_P_hash(uint8_t *out, size_t out_len,
+                       const EVP_MD *md,
+                       const uint8_t *secret, size_t secret_len,
+                       const char *label, size_t label_len,
+                       const uint8_t *seed1, size_t seed1_len,
+                       const uint8_t *seed2, size_t seed2_len) {
+  HMAC_CTX ctx, ctx_tmp, ctx_init;
+  uint8_t A1[EVP_MAX_MD_SIZE];
+  unsigned A1_len;
+  int ret = 0;
+
+  const size_t chunk = EVP_MD_size(md);
+  HMAC_CTX_init(&ctx);
+  HMAC_CTX_init(&ctx_tmp);
+  HMAC_CTX_init(&ctx_init);
+
+  if (!HMAC_Init_ex(&ctx_init, secret, secret_len, md, NULL) ||
+      !HMAC_CTX_copy_ex(&ctx, &ctx_init) ||
+      !HMAC_Update(&ctx, (const uint8_t *) label, label_len) ||
+      !HMAC_Update(&ctx, seed1, seed1_len) ||
+      !HMAC_Update(&ctx, seed2, seed2_len) ||
+      !HMAC_Final(&ctx, A1, &A1_len)) {
+    goto err;
+  }
+
+  for (;;) {
+    unsigned len;
+    uint8_t hmac[EVP_MAX_MD_SIZE];
+    if (!HMAC_CTX_copy_ex(&ctx, &ctx_init) ||
+        !HMAC_Update(&ctx, A1, A1_len) ||
+        // Save a copy of |ctx| to compute the next A1 value below.
+        (out_len > chunk && !HMAC_CTX_copy_ex(&ctx_tmp, &ctx)) ||
+        !HMAC_Update(&ctx, (const uint8_t *) label, label_len) ||
+        !HMAC_Update(&ctx, seed1, seed1_len) ||
+        !HMAC_Update(&ctx, seed2, seed2_len) ||
+        !HMAC_Final(&ctx, hmac, &len)) {
+      goto err;
+    }
+    assert(len == chunk);
+
+    // XOR the result into |out|.
+    if (len > out_len) {
+      len = out_len;
+    }
+    for (unsigned i = 0; i < len; i++) {
+      out[i] ^= hmac[i];
+    }
+    out += len;
+    out_len -= len;
+
+    if (out_len == 0) {
+      break;
+    }
+
+    // Calculate the next A1 value.
+    if (!HMAC_Final(&ctx_tmp, A1, &A1_len)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(A1, sizeof(A1));
+  HMAC_CTX_cleanup(&ctx);
+  HMAC_CTX_cleanup(&ctx_tmp);
+  HMAC_CTX_cleanup(&ctx_init);
+  return ret;
+}
+
+int CRYPTO_tls1_prf(const EVP_MD *digest,
+                    uint8_t *out, size_t out_len,
+                    const uint8_t *secret, size_t secret_len,
+                    const char *label, size_t label_len,
+                    const uint8_t *seed1, size_t seed1_len,
+                    const uint8_t *seed2, size_t seed2_len) {
+  if (out_len == 0) {
+    return 1;
+  }
+
+  OPENSSL_memset(out, 0, out_len);
+
+  if (digest == EVP_md5_sha1()) {
+    // If using the MD5/SHA1 PRF, |secret| is partitioned between MD5 and SHA-1.
+    size_t secret_half = secret_len - (secret_len / 2);
+    if (!tls1_P_hash(out, out_len, EVP_md5(), secret, secret_half, label,
+                     label_len, seed1, seed1_len, seed2, seed2_len)) {
+      return 0;
+    }
+
+    // Note that, if |secret_len| is odd, the two halves share a byte.
+    secret += secret_len - secret_half;
+    secret_len = secret_half;
+    digest = EVP_sha1();
+  }
+
+  return tls1_P_hash(out, out_len, digest, secret, secret_len, label, label_len,
+                     seed1, seed1_len, seed2, seed2_len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c
new file mode 100644
index 0000000..7f4a28b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c	
@@ -0,0 +1,112 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/hkdf.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/hmac.h>
+
+#include "../internal.h"
+
+
+int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+         const uint8_t *secret, size_t secret_len, const uint8_t *salt,
+         size_t salt_len, const uint8_t *info, size_t info_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2
+  uint8_t prk[EVP_MAX_MD_SIZE];
+  size_t prk_len;
+
+  if (!HKDF_extract(prk, &prk_len, digest, secret, secret_len, salt,
+                    salt_len) ||
+      !HKDF_expand(out_key, out_len, digest, prk, prk_len, info, info_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int HKDF_extract(uint8_t *out_key, size_t *out_len, const EVP_MD *digest,
+                 const uint8_t *secret, size_t secret_len, const uint8_t *salt,
+                 size_t salt_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2.2
+
+  // If salt is not given, HashLength zeros are used. However, HMAC does that
+  // internally already so we can ignore it.
+  unsigned len;
+  if (HMAC(digest, salt, salt_len, secret, secret_len, out_key, &len) == NULL) {
+    OPENSSL_PUT_ERROR(HKDF, ERR_R_HMAC_LIB);
+    return 0;
+  }
+  *out_len = len;
+  assert(*out_len == EVP_MD_size(digest));
+  return 1;
+}
+
+int HKDF_expand(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+                const uint8_t *prk, size_t prk_len, const uint8_t *info,
+                size_t info_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2.3
+  const size_t digest_len = EVP_MD_size(digest);
+  uint8_t previous[EVP_MAX_MD_SIZE];
+  size_t n, done = 0;
+  unsigned i;
+  int ret = 0;
+  HMAC_CTX hmac;
+
+  // Expand key material to desired length.
+  n = (out_len + digest_len - 1) / digest_len;
+  if (out_len + digest_len < out_len || n > 255) {
+    OPENSSL_PUT_ERROR(HKDF, HKDF_R_OUTPUT_TOO_LARGE);
+    return 0;
+  }
+
+  HMAC_CTX_init(&hmac);
+  if (!HMAC_Init_ex(&hmac, prk, prk_len, digest, NULL)) {
+    goto out;
+  }
+
+  for (i = 0; i < n; i++) {
+    uint8_t ctr = i + 1;
+    size_t todo;
+
+    if (i != 0 && (!HMAC_Init_ex(&hmac, NULL, 0, NULL, NULL) ||
+                   !HMAC_Update(&hmac, previous, digest_len))) {
+      goto out;
+    }
+    if (!HMAC_Update(&hmac, info, info_len) ||
+        !HMAC_Update(&hmac, &ctr, 1) ||
+        !HMAC_Final(&hmac, previous, NULL)) {
+      goto out;
+    }
+
+    todo = digest_len;
+    if (done + todo > out_len) {
+      todo = out_len - done;
+    }
+    OPENSSL_memcpy(out_key + done, previous, todo);
+    done += todo;
+  }
+
+  ret = 1;
+
+out:
+  HMAC_CTX_cleanup(&hmac);
+  if (ret != 1) {
+    OPENSSL_PUT_ERROR(HKDF, ERR_R_HMAC_LIB);
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c.grpc_back
new file mode 100644
index 0000000..23b60af
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hkdf/hkdf.c.grpc_back	
@@ -0,0 +1,112 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/hkdf.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/hmac.h>
+
+#include "../internal.h"
+
+
+int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+         const uint8_t *secret, size_t secret_len, const uint8_t *salt,
+         size_t salt_len, const uint8_t *info, size_t info_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2
+  uint8_t prk[EVP_MAX_MD_SIZE];
+  size_t prk_len;
+
+  if (!HKDF_extract(prk, &prk_len, digest, secret, secret_len, salt,
+                    salt_len) ||
+      !HKDF_expand(out_key, out_len, digest, prk, prk_len, info, info_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int HKDF_extract(uint8_t *out_key, size_t *out_len, const EVP_MD *digest,
+                 const uint8_t *secret, size_t secret_len, const uint8_t *salt,
+                 size_t salt_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2.2
+
+  // If salt is not given, HashLength zeros are used. However, HMAC does that
+  // internally already so we can ignore it.
+  unsigned len;
+  if (HMAC(digest, salt, salt_len, secret, secret_len, out_key, &len) == NULL) {
+    OPENSSL_PUT_ERROR(HKDF, ERR_R_HMAC_LIB);
+    return 0;
+  }
+  *out_len = len;
+  assert(*out_len == EVP_MD_size(digest));
+  return 1;
+}
+
+int HKDF_expand(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+                const uint8_t *prk, size_t prk_len, const uint8_t *info,
+                size_t info_len) {
+  // https://tools.ietf.org/html/rfc5869#section-2.3
+  const size_t digest_len = EVP_MD_size(digest);
+  uint8_t previous[EVP_MAX_MD_SIZE];
+  size_t n, done = 0;
+  unsigned i;
+  int ret = 0;
+  HMAC_CTX hmac;
+
+  // Expand key material to desired length.
+  n = (out_len + digest_len - 1) / digest_len;
+  if (out_len + digest_len < out_len || n > 255) {
+    OPENSSL_PUT_ERROR(HKDF, HKDF_R_OUTPUT_TOO_LARGE);
+    return 0;
+  }
+
+  HMAC_CTX_init(&hmac);
+  if (!HMAC_Init_ex(&hmac, prk, prk_len, digest, NULL)) {
+    goto out;
+  }
+
+  for (i = 0; i < n; i++) {
+    uint8_t ctr = i + 1;
+    size_t todo;
+
+    if (i != 0 && (!HMAC_Init_ex(&hmac, NULL, 0, NULL, NULL) ||
+                   !HMAC_Update(&hmac, previous, digest_len))) {
+      goto out;
+    }
+    if (!HMAC_Update(&hmac, info, info_len) ||
+        !HMAC_Update(&hmac, &ctr, 1) ||
+        !HMAC_Final(&hmac, previous, NULL)) {
+      goto out;
+    }
+
+    todo = digest_len;
+    if (done + todo > out_len) {
+      todo = out_len - done;
+    }
+    OPENSSL_memcpy(out_key + done, previous, todo);
+    done += todo;
+  }
+
+  ret = 1;
+
+out:
+  HMAC_CTX_cleanup(&hmac);
+  if (ret != 1) {
+    OPENSSL_PUT_ERROR(HKDF, ERR_R_HMAC_LIB);
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c
new file mode 100644
index 0000000..2195fec
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c	
@@ -0,0 +1,2100 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/hrss.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+
+#if defined(_MSC_VER)
+#define RESTRICT
+#else
+#define RESTRICT restrict
+#endif
+
+#include "../internal.h"
+#include "internal.h"
+
+#if defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+#include <arm_neon.h>
+#endif
+
+// This is an implementation of [HRSS], but with a KEM transformation based on
+// [SXY]. The primary references are:
+
+// HRSS: https://eprint.iacr.org/2017/667.pdf
+// HRSSNIST:
+// https://csrc.nist.gov/CSRC/media/Projects/Post-Quantum-Cryptography/documents/round-1/submissions/NTRU_HRSS_KEM.zip
+// SXY: https://eprint.iacr.org/2017/1005.pdf
+// NTRUTN14:
+// https://assets.onboardsecurity.com/static/downloads/NTRU/resources/NTRUTech014.pdf
+// NTRUCOMP: https://eprint.iacr.org/2018/1174
+// SAFEGCD: https://gcd.cr.yp.to/papers.html#safegcd
+
+
+// Vector operations.
+//
+// A couple of functions in this file can use vector operations to meaningful
+// effect. If we're building for a target that has a supported vector unit,
+// |HRSS_HAVE_VECTOR_UNIT| will be defined and |vec_t| will be typedefed to a
+// 128-bit vector. The following functions abstract over the differences between
+// NEON and SSE2 for implementing some vector operations.
+
+// TODO: MSVC can likely also be made to work with vector operations, but ^ must
+// be replaced with _mm_xor_si128, etc.
+#if defined(OPENSSL_SSE2) && (defined(__clang__) || !defined(_MSC_VER))
+
+#define HRSS_HAVE_VECTOR_UNIT
+typedef __m128i vec_t;
+
+// vec_capable returns one iff the current platform supports SSE2.
+static int vec_capable(void) { return 1; }
+
+// vec_add performs a pair-wise addition of four uint16s from |a| and |b|.
+static inline vec_t vec_add(vec_t a, vec_t b) { return _mm_add_epi16(a, b); }
+
+// vec_sub performs a pair-wise subtraction of four uint16s from |a| and |b|.
+static inline vec_t vec_sub(vec_t a, vec_t b) { return _mm_sub_epi16(a, b); }
+
+// vec_mul multiplies each uint16_t in |a| by |b| and returns the resulting
+// vector.
+static inline vec_t vec_mul(vec_t a, uint16_t b) {
+  return _mm_mullo_epi16(a, _mm_set1_epi16(b));
+}
+
+// vec_fma multiplies each uint16_t in |b| by |c|, adds the result to |a|, and
+// returns the resulting vector.
+static inline vec_t vec_fma(vec_t a, vec_t b, uint16_t c) {
+  return _mm_add_epi16(a, _mm_mullo_epi16(b, _mm_set1_epi16(c)));
+}
+
+// vec3_rshift_word right-shifts the 24 uint16_t's in |v| by one uint16.
+static inline void vec3_rshift_word(vec_t v[3]) {
+  // Intel's left and right shifting is backwards compared to the order in
+  // memory because they're based on little-endian order of words (and not just
+  // bytes). So the shifts in this function will be backwards from what one
+  // might expect.
+  const __m128i carry0 = _mm_srli_si128(v[0], 14);
+  v[0] = _mm_slli_si128(v[0], 2);
+
+  const __m128i carry1 = _mm_srli_si128(v[1], 14);
+  v[1] = _mm_slli_si128(v[1], 2);
+  v[1] |= carry0;
+
+  v[2] = _mm_slli_si128(v[2], 2);
+  v[2] |= carry1;
+}
+
+// vec4_rshift_word right-shifts the 32 uint16_t's in |v| by one uint16.
+static inline void vec4_rshift_word(vec_t v[4]) {
+  // Intel's left and right shifting is backwards compared to the order in
+  // memory because they're based on little-endian order of words (and not just
+  // bytes). So the shifts in this function will be backwards from what one
+  // might expect.
+  const __m128i carry0 = _mm_srli_si128(v[0], 14);
+  v[0] = _mm_slli_si128(v[0], 2);
+
+  const __m128i carry1 = _mm_srli_si128(v[1], 14);
+  v[1] = _mm_slli_si128(v[1], 2);
+  v[1] |= carry0;
+
+  const __m128i carry2 = _mm_srli_si128(v[2], 14);
+  v[2] = _mm_slli_si128(v[2], 2);
+  v[2] |= carry1;
+
+  v[3] = _mm_slli_si128(v[3], 2);
+  v[3] |= carry2;
+}
+
+// vec_merge_3_5 takes the final three uint16_t's from |left|, appends the first
+// five from |right|, and returns the resulting vector.
+static inline vec_t vec_merge_3_5(vec_t left, vec_t right) {
+  return _mm_srli_si128(left, 10) | _mm_slli_si128(right, 6);
+}
+
+// poly3_vec_lshift1 left-shifts the 768 bits in |a_s|, and in |a_a|, by one
+// bit.
+static inline void poly3_vec_lshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+
+  for (int i = 0; i < 6; i++) {
+    vec_t next_carry_s = _mm_srli_epi64(a_s[i], 63);
+    a_s[i] = _mm_slli_epi64(a_s[i], 1);
+    a_s[i] |= _mm_slli_si128(next_carry_s, 8);
+    a_s[i] |= carry_s;
+    carry_s = _mm_srli_si128(next_carry_s, 8);
+
+    vec_t next_carry_a = _mm_srli_epi64(a_a[i], 63);
+    a_a[i] = _mm_slli_epi64(a_a[i], 1);
+    a_a[i] |= _mm_slli_si128(next_carry_a, 8);
+    a_a[i] |= carry_a;
+    carry_a = _mm_srli_si128(next_carry_a, 8);
+  }
+}
+
+// poly3_vec_rshift1 right-shifts the 768 bits in |a_s|, and in |a_a|, by one
+// bit.
+static inline void poly3_vec_rshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+
+  for (int i = 5; i >= 0; i--) {
+    const vec_t next_carry_s = _mm_slli_epi64(a_s[i], 63);
+    a_s[i] = _mm_srli_epi64(a_s[i], 1);
+    a_s[i] |= _mm_srli_si128(next_carry_s, 8);
+    a_s[i] |= carry_s;
+    carry_s = _mm_slli_si128(next_carry_s, 8);
+
+    const vec_t next_carry_a = _mm_slli_epi64(a_a[i], 63);
+    a_a[i] = _mm_srli_epi64(a_a[i], 1);
+    a_a[i] |= _mm_srli_si128(next_carry_a, 8);
+    a_a[i] |= carry_a;
+    carry_a = _mm_slli_si128(next_carry_a, 8);
+  }
+}
+
+// vec_broadcast_bit duplicates the least-significant bit in |a| to all bits in
+// a vector and returns the result.
+static inline vec_t vec_broadcast_bit(vec_t a) {
+  return _mm_shuffle_epi32(_mm_srai_epi32(_mm_slli_epi64(a, 63), 31),
+                           0b01010101);
+}
+
+// vec_get_word returns the |i|th uint16_t in |v|. (This is a macro because the
+// compiler requires that |i| be a compile-time constant.)
+#define vec_get_word(v, i) _mm_extract_epi16(v, i)
+
+#elif (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+
+#define HRSS_HAVE_VECTOR_UNIT
+typedef uint16x8_t vec_t;
+
+// These functions perform the same actions as the SSE2 function of the same
+// name, above.
+
+static int vec_capable(void) { return CRYPTO_is_NEON_capable(); }
+
+static inline vec_t vec_add(vec_t a, vec_t b) { return a + b; }
+
+static inline vec_t vec_sub(vec_t a, vec_t b) { return a - b; }
+
+static inline vec_t vec_mul(vec_t a, uint16_t b) { return vmulq_n_u16(a, b); }
+
+static inline vec_t vec_fma(vec_t a, vec_t b, uint16_t c) {
+  return vmlaq_n_u16(a, b, c);
+}
+
+static inline void vec3_rshift_word(vec_t v[3]) {
+  const uint16x8_t kZero = {0};
+  v[2] = vextq_u16(v[1], v[2], 7);
+  v[1] = vextq_u16(v[0], v[1], 7);
+  v[0] = vextq_u16(kZero, v[0], 7);
+}
+
+static inline void vec4_rshift_word(vec_t v[4]) {
+  const uint16x8_t kZero = {0};
+  v[3] = vextq_u16(v[2], v[3], 7);
+  v[2] = vextq_u16(v[1], v[2], 7);
+  v[1] = vextq_u16(v[0], v[1], 7);
+  v[0] = vextq_u16(kZero, v[0], 7);
+}
+
+static inline vec_t vec_merge_3_5(vec_t left, vec_t right) {
+  return vextq_u16(left, right, 5);
+}
+
+static inline uint16_t vec_get_word(vec_t v, unsigned i) {
+  return v[i];
+}
+
+#if !defined(OPENSSL_AARCH64)
+
+static inline vec_t vec_broadcast_bit(vec_t a) {
+  a = (vec_t)vshrq_n_s16(((int16x8_t)a) << 15, 15);
+  return vdupq_lane_u16(vget_low_u16(a), 0);
+}
+
+static inline void poly3_vec_lshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+  const vec_t kZero = {0};
+
+  for (int i = 0; i < 6; i++) {
+    vec_t next_carry_s = a_s[i] >> 15;
+    a_s[i] <<= 1;
+    a_s[i] |= vextq_u16(kZero, next_carry_s, 7);
+    a_s[i] |= carry_s;
+    carry_s = vextq_u16(next_carry_s, kZero, 7);
+
+    vec_t next_carry_a = a_a[i] >> 15;
+    a_a[i] <<= 1;
+    a_a[i] |= vextq_u16(kZero, next_carry_a, 7);
+    a_a[i] |= carry_a;
+    carry_a = vextq_u16(next_carry_a, kZero, 7);
+  }
+}
+
+static inline void poly3_vec_rshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+  const vec_t kZero = {0};
+
+  for (int i = 5; i >= 0; i--) {
+    vec_t next_carry_s = a_s[i] << 15;
+    a_s[i] >>= 1;
+    a_s[i] |= vextq_u16(next_carry_s, kZero, 1);
+    a_s[i] |= carry_s;
+    carry_s = vextq_u16(kZero, next_carry_s, 1);
+
+    vec_t next_carry_a = a_a[i] << 15;
+    a_a[i] >>= 1;
+    a_a[i] |= vextq_u16(next_carry_a, kZero, 1);
+    a_a[i] |= carry_a;
+    carry_a = vextq_u16(kZero, next_carry_a, 1);
+  }
+}
+
+#endif  // !OPENSSL_AARCH64
+
+#endif  // (ARM || AARCH64) && NEON
+
+// Polynomials in this scheme have N terms.
+// #define N 701
+
+// Underlying data types and arithmetic operations.
+// ------------------------------------------------
+
+// Binary polynomials.
+
+// poly2 represents a degree-N polynomial over GF(2). The words are in little-
+// endian order, i.e. the coefficient of x^0 is the LSB of the first word. The
+// final word is only partially used since N is not a multiple of the word size.
+
+// Defined in internal.h:
+// struct poly2 {
+//  crypto_word_t v[WORDS_PER_POLY];
+// };
+
+OPENSSL_UNUSED static void hexdump(const void *void_in, size_t len) {
+  const uint8_t *in = (const uint8_t *)void_in;
+  for (size_t i = 0; i < len; i++) {
+    printf("%02x", in[i]);
+  }
+  printf("\n");
+}
+
+static void poly2_zero(struct poly2 *p) {
+  OPENSSL_memset(&p->v[0], 0, sizeof(crypto_word_t) * WORDS_PER_POLY);
+}
+
+// word_reverse returns |in| with the bits in reverse order.
+static crypto_word_t word_reverse(crypto_word_t in) {
+#if defined(OPENSSL_64_BIT)
+  static const crypto_word_t kMasks[6] = {
+    UINT64_C(0x5555555555555555),
+    UINT64_C(0x3333333333333333),
+    UINT64_C(0x0f0f0f0f0f0f0f0f),
+    UINT64_C(0x00ff00ff00ff00ff),
+    UINT64_C(0x0000ffff0000ffff),
+    UINT64_C(0x00000000ffffffff),
+  };
+#else
+  static const crypto_word_t kMasks[5] = {
+    0x55555555,
+    0x33333333,
+    0x0f0f0f0f,
+    0x00ff00ff,
+    0x0000ffff,
+  };
+#endif
+
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMasks); i++) {
+    in = ((in >> (1 << i)) & kMasks[i]) | ((in & kMasks[i]) << (1 << i));
+  }
+
+  return in;
+}
+
+// lsb_to_all replicates the least-significant bit of |v| to all bits of the
+// word. This is used in bit-slicing operations to make a vector from a fixed
+// value.
+static crypto_word_t lsb_to_all(crypto_word_t v) { return 0u - (v & 1); }
+
+// poly2_mod_phiN reduces |p| by Φ(N).
+static void poly2_mod_phiN(struct poly2 *p) {
+  // m is the term at x^700, replicated to every bit.
+  const crypto_word_t m =
+      lsb_to_all(p->v[WORDS_PER_POLY - 1] >> (BITS_IN_LAST_WORD - 1));
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    p->v[i] ^= m;
+  }
+  p->v[WORDS_PER_POLY - 1] &= (UINT64_C(1) << (BITS_IN_LAST_WORD - 1)) - 1;
+}
+
+// poly2_reverse_700 reverses the order of the first 700 bits of |in| and writes
+// the result to |out|.
+static void poly2_reverse_700(struct poly2 *out, const struct poly2 *in) {
+  struct poly2 t;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    t.v[i] = word_reverse(in->v[i]);
+  }
+
+  static const size_t shift = BITS_PER_WORD - ((N-1) % BITS_PER_WORD);
+  for (size_t i = 0; i < WORDS_PER_POLY-1; i++) {
+    out->v[i] = t.v[WORDS_PER_POLY-1-i] >> shift;
+    out->v[i] |= t.v[WORDS_PER_POLY-2-i] << (BITS_PER_WORD - shift);
+  }
+  out->v[WORDS_PER_POLY-1] = t.v[0] >> shift;
+}
+
+// poly2_cswap exchanges the values of |a| and |b| if |swap| is all ones.
+static void poly2_cswap(struct poly2 *a, struct poly2 *b, crypto_word_t swap) {
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    const crypto_word_t sum = swap & (a->v[i] ^ b->v[i]);
+    a->v[i] ^= sum;
+    b->v[i] ^= sum;
+  }
+}
+
+// poly2_fmadd sets |out| to |out| + |in| * m, where m is either
+// |CONSTTIME_TRUE_W| or |CONSTTIME_FALSE_W|.
+static void poly2_fmadd(struct poly2 *out, const struct poly2 *in,
+                        crypto_word_t m) {
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    out->v[i] ^= in->v[i] & m;
+  }
+}
+
+// poly2_lshift1 left-shifts |p| by one bit.
+static void poly2_lshift1(struct poly2 *p) {
+  crypto_word_t carry = 0;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    const crypto_word_t next_carry = p->v[i] >> (BITS_PER_WORD - 1);
+    p->v[i] <<= 1;
+    p->v[i] |= carry;
+    carry = next_carry;
+  }
+}
+
+// poly2_rshift1 right-shifts |p| by one bit.
+static void poly2_rshift1(struct poly2 *p) {
+  crypto_word_t carry = 0;
+  for (size_t i = WORDS_PER_POLY - 1; i < WORDS_PER_POLY; i--) {
+    const crypto_word_t next_carry = p->v[i] & 1;
+    p->v[i] >>= 1;
+    p->v[i] |= carry << (BITS_PER_WORD - 1);
+    carry = next_carry;
+  }
+}
+
+// poly2_clear_top_bits clears the bits in the final word that are only for
+// alignment.
+static void poly2_clear_top_bits(struct poly2 *p) {
+  p->v[WORDS_PER_POLY - 1] &= (UINT64_C(1) << BITS_IN_LAST_WORD) - 1;
+}
+
+// poly2_top_bits_are_clear returns one iff the extra bits in the final words of
+// |p| are zero.
+static int poly2_top_bits_are_clear(const struct poly2 *p) {
+  return (p->v[WORDS_PER_POLY - 1] &
+          ~((UINT64_C(1) << BITS_IN_LAST_WORD) - 1)) == 0;
+}
+
+// Ternary polynomials.
+
+// poly3 represents a degree-N polynomial over GF(3). Each coefficient is
+// bitsliced across the |s| and |a| arrays, like this:
+//
+//   s  |  a  | value
+//  -----------------
+//   0  |  0  | 0
+//   0  |  1  | 1
+//   1  |  1  | -1 (aka 2)
+//   1  |  0  | <invalid>
+//
+// ('s' is for sign, and 'a' is the absolute value.)
+//
+// Once bitsliced as such, the following circuits can be used to implement
+// addition and multiplication mod 3:
+//
+//   (s3, a3) = (s1, a1) × (s2, a2)
+//   a3 = a1 ∧ a2
+//   s3 = (s1 ⊕ s2) ∧ a3
+//
+//   (s3, a3) = (s1, a1) + (s2, a2)
+//   t = s1 ⊕ a2
+//   s3 = t ∧ (s2 ⊕ a1)
+//   a3 = (a1 ⊕ a2) ∨ (t ⊕ s2)
+//
+//   (s3, a3) = (s1, a1) - (s2, a2)
+//   t = a1 ⊕ a2
+//   s3 = (s1 ⊕ a2) ∧ (t ⊕ s2)
+//   a3 = t ∨ (s1 ⊕ s2)
+//
+// Negating a value just involves XORing s by a.
+//
+// struct poly3 {
+//   struct poly2 s, a;
+// };
+
+OPENSSL_UNUSED static void poly3_print(const struct poly3 *in) {
+  struct poly3 p;
+  OPENSSL_memcpy(&p, in, sizeof(p));
+  p.s.v[WORDS_PER_POLY - 1] &= ((crypto_word_t)1 << BITS_IN_LAST_WORD) - 1;
+  p.a.v[WORDS_PER_POLY - 1] &= ((crypto_word_t)1 << BITS_IN_LAST_WORD) - 1;
+
+  printf("{[");
+  for (unsigned i = 0; i < WORDS_PER_POLY; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf(BN_HEX_FMT2, p.s.v[i]);
+  }
+  printf("] [");
+  for (unsigned i = 0; i < WORDS_PER_POLY; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf(BN_HEX_FMT2, p.a.v[i]);
+  }
+  printf("]}\n");
+}
+
+static void poly3_zero(struct poly3 *p) {
+  poly2_zero(&p->s);
+  poly2_zero(&p->a);
+}
+
+// poly3_reverse_700 reverses the order of the first 700 terms of |in| and
+// writes them to |out|.
+static void poly3_reverse_700(struct poly3 *out, const struct poly3 *in) {
+  poly2_reverse_700(&out->a, &in->a);
+  poly2_reverse_700(&out->s, &in->s);
+}
+
+// poly3_word_mul sets (|out_s|, |out_a|) to (|s1|, |a1|) × (|s2|, |a2|).
+static void poly3_word_mul(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  *out_a = a1 & a2;
+  *out_s = (s1 ^ s2) & *out_a;
+}
+
+// poly3_word_add sets (|out_s|, |out_a|) to (|s1|, |a1|) + (|s2|, |a2|).
+static void poly3_word_add(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  const crypto_word_t t = s1 ^ a2;
+  *out_s = t & (s2 ^ a1);
+  *out_a = (a1 ^ a2) | (t ^ s2);
+}
+
+// poly3_word_sub sets (|out_s|, |out_a|) to (|s1|, |a1|) - (|s2|, |a2|).
+static void poly3_word_sub(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  const crypto_word_t t = a1 ^ a2;
+  *out_s = (s1 ^ a2) & (t ^ s2);
+  *out_a = t | (s1 ^ s2);
+}
+
+// poly3_mul_const sets |p| to |p|×m, where m = (ms, ma).
+static void poly3_mul_const(struct poly3 *p, crypto_word_t ms,
+                            crypto_word_t ma) {
+  ms = lsb_to_all(ms);
+  ma = lsb_to_all(ma);
+
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_mul(&p->s.v[i], &p->a.v[i], p->s.v[i], p->a.v[i], ms, ma);
+  }
+}
+
+// poly3_fmadd sets |out| to |out| - |in|×m, where m is (ms, ma).
+static void poly3_fmsub(struct poly3 *RESTRICT out,
+                        const struct poly3 *RESTRICT in, crypto_word_t ms,
+                        crypto_word_t ma) {
+  crypto_word_t product_s, product_a;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_mul(&product_s, &product_a, in->s.v[i], in->a.v[i], ms, ma);
+    poly3_word_sub(&out->s.v[i], &out->a.v[i], out->s.v[i], out->a.v[i],
+                   product_s, product_a);
+  }
+}
+
+// final_bit_to_all replicates the bit in the final position of the last word to
+// all the bits in the word.
+static crypto_word_t final_bit_to_all(crypto_word_t v) {
+  return lsb_to_all(v >> (BITS_IN_LAST_WORD - 1));
+}
+
+// poly3_top_bits_are_clear returns one iff the extra bits in the final words of
+// |p| are zero.
+OPENSSL_UNUSED static int poly3_top_bits_are_clear(const struct poly3 *p) {
+  return poly2_top_bits_are_clear(&p->s) && poly2_top_bits_are_clear(&p->a);
+}
+
+// poly3_mod_phiN reduces |p| by Φ(N).
+static void poly3_mod_phiN(struct poly3 *p) {
+  // In order to reduce by Φ(N) we subtract by the value of the greatest
+  // coefficient.
+  const crypto_word_t factor_s = final_bit_to_all(p->s.v[WORDS_PER_POLY - 1]);
+  const crypto_word_t factor_a = final_bit_to_all(p->a.v[WORDS_PER_POLY - 1]);
+
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_sub(&p->s.v[i], &p->a.v[i], p->s.v[i], p->a.v[i], factor_s,
+                   factor_a);
+  }
+
+  poly2_clear_top_bits(&p->s);
+  poly2_clear_top_bits(&p->a);
+}
+
+static void poly3_cswap(struct poly3 *a, struct poly3 *b, crypto_word_t swap) {
+  poly2_cswap(&a->s, &b->s, swap);
+  poly2_cswap(&a->a, &b->a, swap);
+}
+
+static void poly3_lshift1(struct poly3 *p) {
+  poly2_lshift1(&p->s);
+  poly2_lshift1(&p->a);
+}
+
+static void poly3_rshift1(struct poly3 *p) {
+  poly2_rshift1(&p->s);
+  poly2_rshift1(&p->a);
+}
+
+// poly3_span represents a pointer into a poly3.
+struct poly3_span {
+  crypto_word_t *s;
+  crypto_word_t *a;
+};
+
+// poly3_span_add adds |n| words of values from |a| and |b| and writes the
+// result to |out|.
+static void poly3_span_add(const struct poly3_span *out,
+                           const struct poly3_span *a,
+                           const struct poly3_span *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    poly3_word_add(&out->s[i], &out->a[i], a->s[i], a->a[i], b->s[i], b->a[i]);
+  }
+}
+
+// poly3_span_sub subtracts |n| words of |b| from |n| words of |a|.
+static void poly3_span_sub(const struct poly3_span *a,
+                           const struct poly3_span *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    poly3_word_sub(&a->s[i], &a->a[i], a->s[i], a->a[i], b->s[i], b->a[i]);
+  }
+}
+
+// poly3_mul_aux is a recursive function that multiplies |n| words from |a| and
+// |b| and writes 2×|n| words to |out|. Each call uses 2*ceil(n/2) elements of
+// |scratch| and the function recurses, except if |n| == 1, when |scratch| isn't
+// used and the recursion stops. For |n| in {11, 22}, the transitive total
+// amount of |scratch| needed happens to be 2n+2.
+static void poly3_mul_aux(const struct poly3_span *out,
+                          const struct poly3_span *scratch,
+                          const struct poly3_span *a,
+                          const struct poly3_span *b, size_t n) {
+  if (n == 1) {
+    crypto_word_t r_s_low = 0, r_s_high = 0, r_a_low = 0, r_a_high = 0;
+    crypto_word_t b_s = b->s[0], b_a = b->a[0];
+    const crypto_word_t a_s = a->s[0], a_a = a->a[0];
+
+    for (size_t i = 0; i < BITS_PER_WORD; i++) {
+      // Multiply (s, a) by the next value from (b_s, b_a).
+      crypto_word_t m_s, m_a;
+      poly3_word_mul(&m_s, &m_a, a_s, a_a, lsb_to_all(b_s), lsb_to_all(b_a));
+      b_s >>= 1;
+      b_a >>= 1;
+
+      if (i == 0) {
+        // Special case otherwise the code tries to shift by BITS_PER_WORD
+        // below, which is undefined.
+        r_s_low = m_s;
+        r_a_low = m_a;
+        continue;
+      }
+
+      // Shift the multiplication result to the correct position.
+      const crypto_word_t m_s_low = m_s << i;
+      const crypto_word_t m_s_high = m_s >> (BITS_PER_WORD - i);
+      const crypto_word_t m_a_low = m_a << i;
+      const crypto_word_t m_a_high = m_a >> (BITS_PER_WORD - i);
+
+      // Add into the result.
+      poly3_word_add(&r_s_low, &r_a_low, r_s_low, r_a_low, m_s_low, m_a_low);
+      poly3_word_add(&r_s_high, &r_a_high, r_s_high, r_a_high, m_s_high,
+                     m_a_high);
+    }
+
+    out->s[0] = r_s_low;
+    out->s[1] = r_s_high;
+    out->a[0] = r_a_low;
+    out->a[1] = r_a_high;
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The first
+  // is always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const struct poly3_span a_high = {&a->s[low_len], &a->a[low_len]};
+  const struct poly3_span b_high = {&b->s[low_len], &b->a[low_len]};
+
+  // Store a_1 + a_0 in the first half of |out| and b_1 + b_0 in the second
+  // half.
+  const struct poly3_span a_cross_sum = *out;
+  const struct poly3_span b_cross_sum = {&out->s[high_len], &out->a[high_len]};
+  poly3_span_add(&a_cross_sum, a, &a_high, low_len);
+  poly3_span_add(&b_cross_sum, b, &b_high, low_len);
+  if (high_len != low_len) {
+    a_cross_sum.s[low_len] = a_high.s[low_len];
+    a_cross_sum.a[low_len] = a_high.a[low_len];
+    b_cross_sum.s[low_len] = b_high.s[low_len];
+    b_cross_sum.a[low_len] = b_high.a[low_len];
+  }
+
+  const struct poly3_span child_scratch = {&scratch->s[2 * high_len],
+                                           &scratch->a[2 * high_len]};
+  const struct poly3_span out_mid = {&out->s[low_len], &out->a[low_len]};
+  const struct poly3_span out_high = {&out->s[2 * low_len],
+                                      &out->a[2 * low_len]};
+
+  // Calculate (a_1 + a_0) × (b_1 + b_0) and write to scratch buffer.
+  poly3_mul_aux(scratch, &child_scratch, &a_cross_sum, &b_cross_sum, high_len);
+  // Calculate a_1 × b_1.
+  poly3_mul_aux(&out_high, &child_scratch, &a_high, &b_high, high_len);
+  // Calculate a_0 × b_0.
+  poly3_mul_aux(out, &child_scratch, a, b, low_len);
+
+  // Subtract those last two products from the first.
+  poly3_span_sub(scratch, out, low_len * 2);
+  poly3_span_sub(scratch, &out_high, high_len * 2);
+
+  // Add the middle product into the output.
+  poly3_span_add(&out_mid, &out_mid, scratch, high_len * 2);
+}
+
+// HRSS_poly3_mul sets |*out| to |x|×|y| mod Φ(N).
+void HRSS_poly3_mul(struct poly3 *out, const struct poly3 *x,
+                    const struct poly3 *y) {
+  crypto_word_t prod_s[WORDS_PER_POLY * 2];
+  crypto_word_t prod_a[WORDS_PER_POLY * 2];
+  crypto_word_t scratch_s[WORDS_PER_POLY * 2 + 2];
+  crypto_word_t scratch_a[WORDS_PER_POLY * 2 + 2];
+  const struct poly3_span prod_span = {prod_s, prod_a};
+  const struct poly3_span scratch_span = {scratch_s, scratch_a};
+  const struct poly3_span x_span = {(crypto_word_t *)x->s.v,
+                                    (crypto_word_t *)x->a.v};
+  const struct poly3_span y_span = {(crypto_word_t *)y->s.v,
+                                    (crypto_word_t *)y->a.v};
+
+  poly3_mul_aux(&prod_span, &scratch_span, &x_span, &y_span, WORDS_PER_POLY);
+
+  // |prod| needs to be reduced mod (𝑥^n - 1), which just involves adding the
+  // upper-half to the lower-half. However, N is 701, which isn't a multiple of
+  // BITS_PER_WORD, so the upper-half vectors all have to be shifted before
+  // being added to the lower-half.
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    crypto_word_t v_s = prod_s[WORDS_PER_POLY + i - 1] >> BITS_IN_LAST_WORD;
+    v_s |= prod_s[WORDS_PER_POLY + i] << (BITS_PER_WORD - BITS_IN_LAST_WORD);
+    crypto_word_t v_a = prod_a[WORDS_PER_POLY + i - 1] >> BITS_IN_LAST_WORD;
+    v_a |= prod_a[WORDS_PER_POLY + i] << (BITS_PER_WORD - BITS_IN_LAST_WORD);
+
+    poly3_word_add(&out->s.v[i], &out->a.v[i], prod_s[i], prod_a[i], v_s, v_a);
+  }
+
+  poly3_mod_phiN(out);
+}
+
+#if defined(HRSS_HAVE_VECTOR_UNIT) && !defined(OPENSSL_AARCH64)
+
+// poly3_vec_cswap swaps (|a_s|, |a_a|) and (|b_s|, |b_a|) if |swap| is
+// |0xff..ff|. Otherwise, |swap| must be zero.
+static inline void poly3_vec_cswap(vec_t a_s[6], vec_t a_a[6], vec_t b_s[6],
+                                   vec_t b_a[6], const vec_t swap) {
+  for (int i = 0; i < 6; i++) {
+    const vec_t sum_s = swap & (a_s[i] ^ b_s[i]);
+    a_s[i] ^= sum_s;
+    b_s[i] ^= sum_s;
+
+    const vec_t sum_a = swap & (a_a[i] ^ b_a[i]);
+    a_a[i] ^= sum_a;
+    b_a[i] ^= sum_a;
+  }
+}
+
+// poly3_vec_fmsub subtracts (|ms|, |ma|) × (|b_s|, |b_a|) from (|a_s|, |a_a|).
+static inline void poly3_vec_fmsub(vec_t a_s[6], vec_t a_a[6], vec_t b_s[6],
+                                   vec_t b_a[6], const vec_t ms,
+                                   const vec_t ma) {
+  for (int i = 0; i < 6; i++) {
+    // See the bitslice formula, above.
+    const vec_t s = b_s[i];
+    const vec_t a = b_a[i];
+    const vec_t product_a = a & ma;
+    const vec_t product_s = (s ^ ms) & product_a;
+
+    const vec_t out_s = a_s[i];
+    const vec_t out_a = a_a[i];
+    const vec_t t = out_a ^ product_a;
+    a_s[i] = (out_s ^ product_a) & (t ^ product_s);
+    a_a[i] = t | (out_s ^ product_s);
+  }
+}
+
+// poly3_invert_vec sets |*out| to |in|^-1, i.e. such that |out|×|in| == 1 mod
+// Φ(N).
+static void poly3_invert_vec(struct poly3 *out, const struct poly3 *in) {
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  const vec_t kZero = {0};
+  const vec_t kOne = {1};
+  static const uint8_t kBottomSixtyOne[sizeof(vec_t)] = {
+      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f};
+
+  vec_t v_s[6], v_a[6], r_s[6], r_a[6], f_s[6], f_a[6], g_s[6], g_a[6];
+  // v = 0
+  memset(&v_s, 0, sizeof(v_s));
+  memset(&v_a, 0, sizeof(v_a));
+  // r = 1
+  memset(&r_s, 0, sizeof(r_s));
+  memset(&r_a, 0, sizeof(r_a));
+  r_a[0] = kOne;
+  // f = all ones.
+  memset(f_s, 0, sizeof(f_s));
+  memset(f_a, 0xff, 5 * sizeof(vec_t));
+  memcpy(&f_a[5], kBottomSixtyOne, sizeof(kBottomSixtyOne));
+  // g is the reversal of |in|.
+  struct poly3 in_reversed;
+  poly3_reverse_700(&in_reversed, in);
+  g_s[5] = kZero;
+  memcpy(&g_s, &in_reversed.s.v, WORDS_PER_POLY * sizeof(crypto_word_t));
+  g_a[5] = kZero;
+  memcpy(&g_a, &in_reversed.a.v, WORDS_PER_POLY * sizeof(crypto_word_t));
+
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly3_vec_lshift1(v_s, v_a);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const vec_t g_has_constant_term = vec_broadcast_bit(g_a[0]);
+    const vec_t mask_w =
+        {delta_is_non_negative & delta_is_non_zero};
+    const vec_t mask = vec_broadcast_bit(mask_w) & g_has_constant_term;
+
+    const vec_t c_a = vec_broadcast_bit(f_a[0] & g_a[0]);
+    const vec_t c_s = vec_broadcast_bit((f_s[0] ^ g_s[0]) & c_a);
+
+    delta = constant_time_select_int(lsb_to_all(mask[0]), -delta, delta);
+    delta++;
+
+    poly3_vec_cswap(f_s, f_a, g_s, g_a, mask);
+    poly3_vec_fmsub(g_s, g_a, f_s, f_a, c_s, c_a);
+    poly3_vec_rshift1(g_s, g_a);
+
+    poly3_vec_cswap(v_s, v_a, r_s, r_a, mask);
+    poly3_vec_fmsub(r_s, r_a, v_s, v_a, c_s, c_a);
+  }
+
+  assert(delta == 0);
+  memcpy(out->s.v, v_s, WORDS_PER_POLY * sizeof(crypto_word_t));
+  memcpy(out->a.v, v_a, WORDS_PER_POLY * sizeof(crypto_word_t));
+  poly3_mul_const(out, vec_get_word(f_s[0], 0), vec_get_word(f_a[0], 0));
+  poly3_reverse_700(out, out);
+}
+
+#endif  // HRSS_HAVE_VECTOR_UNIT
+
+// HRSS_poly3_invert sets |*out| to |in|^-1, i.e. such that |out|×|in| == 1 mod
+// Φ(N).
+void HRSS_poly3_invert(struct poly3 *out, const struct poly3 *in) {
+  // The vector version of this function seems slightly slower on AArch64, but
+  // is useful on ARMv7 and x86-64.
+#if defined(HRSS_HAVE_VECTOR_UNIT) && !defined(OPENSSL_AARCH64)
+  if (vec_capable()) {
+    poly3_invert_vec(out, in);
+    return;
+  }
+#endif
+
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  struct poly3 v, r, f, g;
+  // v = 0
+  poly3_zero(&v);
+  // r = 1
+  poly3_zero(&r);
+  r.a.v[0] = 1;
+  // f = all ones.
+  OPENSSL_memset(&f.s, 0, sizeof(struct poly2));
+  OPENSSL_memset(&f.a, 0xff, sizeof(struct poly2));
+  f.a.v[WORDS_PER_POLY - 1] >>= BITS_PER_WORD - BITS_IN_LAST_WORD;
+  // g is the reversal of |in|.
+  poly3_reverse_700(&g, in);
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly3_lshift1(&v);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const crypto_word_t g_has_constant_term = lsb_to_all(g.a.v[0]);
+    const crypto_word_t mask =
+        g_has_constant_term & delta_is_non_negative & delta_is_non_zero;
+
+    crypto_word_t c_s, c_a;
+    poly3_word_mul(&c_s, &c_a, f.s.v[0], f.a.v[0], g.s.v[0], g.a.v[0]);
+    c_s = lsb_to_all(c_s);
+    c_a = lsb_to_all(c_a);
+
+    delta = constant_time_select_int(mask, -delta, delta);
+    delta++;
+
+    poly3_cswap(&f, &g, mask);
+    poly3_fmsub(&g, &f, c_s, c_a);
+    poly3_rshift1(&g);
+
+    poly3_cswap(&v, &r, mask);
+    poly3_fmsub(&r, &v, c_s, c_a);
+  }
+
+  assert(delta == 0);
+  poly3_mul_const(&v, f.s.v[0], f.a.v[0]);
+  poly3_reverse_700(out, &v);
+}
+
+// Polynomials in Q.
+
+// Coefficients are reduced mod Q. (Q is clearly not prime, therefore the
+// coefficients do not form a field.)
+#define Q 8192
+
+// VECS_PER_POLY is the number of 128-bit vectors needed to represent a
+// polynomial.
+#define COEFFICIENTS_PER_VEC (sizeof(vec_t) / sizeof(uint16_t))
+#define VECS_PER_POLY ((N + COEFFICIENTS_PER_VEC - 1) / COEFFICIENTS_PER_VEC)
+
+// poly represents a polynomial with coefficients mod Q. Note that, while Q is a
+// power of two, this does not operate in GF(Q). That would be a binary field
+// but this is simply mod Q. Thus the coefficients are not a field.
+//
+// Coefficients are ordered little-endian, thus the coefficient of x^0 is the
+// first element of the array.
+struct poly {
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+  union {
+    // N + 3 = 704, which is a multiple of 64 and thus aligns things, esp for
+    // the vector code.
+    uint16_t v[N + 3];
+    vec_t vectors[VECS_PER_POLY];
+  };
+#else
+  // Even if !HRSS_HAVE_VECTOR_UNIT, external assembly may be called that
+  // requires alignment.
+  alignas(16) uint16_t v[N + 3];
+#endif
+};
+
+OPENSSL_UNUSED static void poly_print(const struct poly *p) {
+  printf("[");
+  for (unsigned i = 0; i < N; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf("%d", p->v[i]);
+  }
+  printf("]\n");
+}
+
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+
+// poly_mul_vec_aux is a recursive function that multiplies |n| words from |a|
+// and |b| and writes 2×|n| words to |out|. Each call uses 2*ceil(n/2) elements
+// of |scratch| and the function recurses, except if |n| < 3, when |scratch|
+// isn't used and the recursion stops. If |n| == |VECS_PER_POLY| then |scratch|
+// needs 172 elements.
+static void poly_mul_vec_aux(vec_t *restrict out, vec_t *restrict scratch,
+                             const vec_t *restrict a, const vec_t *restrict b,
+                             const size_t n) {
+  // In [HRSS], the technique they used for polynomial multiplication is
+  // described: they start with Toom-4 at the top level and then two layers of
+  // Karatsuba. Karatsuba is a specific instance of the general Toom–Cook
+  // decomposition, which splits an input n-ways and produces 2n-1
+  // multiplications of those parts. So, starting with 704 coefficients (rounded
+  // up from 701 to have more factors of two), Toom-4 gives seven
+  // multiplications of degree-174 polynomials. Each round of Karatsuba (which
+  // is Toom-2) increases the number of multiplications by a factor of three
+  // while halving the size of the values being multiplied. So two rounds gives
+  // 63 multiplications of degree-44 polynomials. Then they (I think) form
+  // vectors by gathering all 63 coefficients of each power together, for each
+  // input, and doing more rounds of Karatsuba on the vectors until they bottom-
+  // out somewhere with schoolbook multiplication.
+  //
+  // I tried something like that for NEON. NEON vectors are 128 bits so hold
+  // eight coefficients. I wrote a function that did Karatsuba on eight
+  // multiplications at the same time, using such vectors, and a Go script that
+  // decomposed from degree-704, with Karatsuba in non-transposed form, until it
+  // reached multiplications of degree-44. It batched up those 81
+  // multiplications into lots of eight with a single one left over (which was
+  // handled directly).
+  //
+  // It worked, but it was significantly slower than the dumb algorithm used
+  // below. Potentially that was because I misunderstood how [HRSS] did it, or
+  // because Clang is bad at generating good code from NEON intrinsics on ARMv7.
+  // (Which is true: the code generated by Clang for the below is pretty crap.)
+  //
+  // This algorithm is much simpler. It just does Karatsuba decomposition all
+  // the way down and never transposes. When it gets down to degree-16 or
+  // degree-24 values, they are multiplied using schoolbook multiplication and
+  // vector intrinsics. The vector operations form each of the eight phase-
+  // shifts of one of the inputs, point-wise multiply, and then add into the
+  // result at the correct place. This means that 33% (degree-16) or 25%
+  // (degree-24) of the multiplies and adds are wasted, but it does ok.
+  if (n == 2) {
+    vec_t result[4];
+    vec_t vec_a[3];
+    static const vec_t kZero = {0};
+    vec_a[0] = a[0];
+    vec_a[1] = a[1];
+    vec_a[2] = kZero;
+
+    result[0] = vec_mul(vec_a[0], vec_get_word(b[0], 0));
+    result[1] = vec_mul(vec_a[1], vec_get_word(b[0], 0));
+
+    result[1] = vec_fma(result[1], vec_a[0], vec_get_word(b[1], 0));
+    result[2] = vec_mul(vec_a[1], vec_get_word(b[1], 0));
+    result[3] = kZero;
+
+    vec3_rshift_word(vec_a);
+
+#define BLOCK(x, y)                                                      \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] =                                                      \
+        vec_fma(result[x + 2], vec_a[2], vec_get_word(b[y / 8], y % 8)); \
+  } while (0)
+
+    BLOCK(0, 1);
+    BLOCK(1, 9);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 2);
+    BLOCK(1, 10);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 3);
+    BLOCK(1, 11);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 4);
+    BLOCK(1, 12);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 5);
+    BLOCK(1, 13);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 6);
+    BLOCK(1, 14);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 7);
+    BLOCK(1, 15);
+
+#undef BLOCK
+
+    memcpy(out, result, sizeof(result));
+    return;
+  }
+
+  if (n == 3) {
+    vec_t result[6];
+    vec_t vec_a[4];
+    static const vec_t kZero = {0};
+    vec_a[0] = a[0];
+    vec_a[1] = a[1];
+    vec_a[2] = a[2];
+    vec_a[3] = kZero;
+
+    result[0] = vec_mul(a[0], vec_get_word(b[0], 0));
+    result[1] = vec_mul(a[1], vec_get_word(b[0], 0));
+    result[2] = vec_mul(a[2], vec_get_word(b[0], 0));
+
+#define BLOCK_PRE(x, y)                                                  \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] = vec_mul(vec_a[2], vec_get_word(b[y / 8], y % 8));    \
+  } while (0)
+
+    BLOCK_PRE(1, 8);
+    BLOCK_PRE(2, 16);
+
+    result[5] = kZero;
+
+    vec4_rshift_word(vec_a);
+
+#define BLOCK(x, y)                                                      \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] =                                                      \
+        vec_fma(result[x + 2], vec_a[2], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 3] =                                                      \
+        vec_fma(result[x + 3], vec_a[3], vec_get_word(b[y / 8], y % 8)); \
+  } while (0)
+
+    BLOCK(0, 1);
+    BLOCK(1, 9);
+    BLOCK(2, 17);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 2);
+    BLOCK(1, 10);
+    BLOCK(2, 18);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 3);
+    BLOCK(1, 11);
+    BLOCK(2, 19);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 4);
+    BLOCK(1, 12);
+    BLOCK(2, 20);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 5);
+    BLOCK(1, 13);
+    BLOCK(2, 21);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 6);
+    BLOCK(1, 14);
+    BLOCK(2, 22);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 7);
+    BLOCK(1, 15);
+    BLOCK(2, 23);
+
+#undef BLOCK
+#undef BLOCK_PRE
+
+    memcpy(out, result, sizeof(result));
+
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The first is
+  // always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const vec_t *a_high = &a[low_len];
+  const vec_t *b_high = &b[low_len];
+
+  // Store a_1 + a_0 in the first half of |out| and b_1 + b_0 in the second
+  // half.
+  for (size_t i = 0; i < low_len; i++) {
+    out[i] = vec_add(a_high[i], a[i]);
+    out[high_len + i] = vec_add(b_high[i], b[i]);
+  }
+  if (high_len != low_len) {
+    out[low_len] = a_high[low_len];
+    out[high_len + low_len] = b_high[low_len];
+  }
+
+  vec_t *const child_scratch = &scratch[2 * high_len];
+  // Calculate (a_1 + a_0) × (b_1 + b_0) and write to scratch buffer.
+  poly_mul_vec_aux(scratch, child_scratch, out, &out[high_len], high_len);
+  // Calculate a_1 × b_1.
+  poly_mul_vec_aux(&out[low_len * 2], child_scratch, a_high, b_high, high_len);
+  // Calculate a_0 × b_0.
+  poly_mul_vec_aux(out, child_scratch, a, b, low_len);
+
+  // Subtract those last two products from the first.
+  for (size_t i = 0; i < low_len * 2; i++) {
+    scratch[i] = vec_sub(scratch[i], vec_add(out[i], out[low_len * 2 + i]));
+  }
+  if (low_len != high_len) {
+    scratch[low_len * 2] = vec_sub(scratch[low_len * 2], out[low_len * 4]);
+    scratch[low_len * 2 + 1] =
+        vec_sub(scratch[low_len * 2 + 1], out[low_len * 4 + 1]);
+  }
+
+  // Add the middle product into the output.
+  for (size_t i = 0; i < high_len * 2; i++) {
+    out[low_len + i] = vec_add(out[low_len + i], scratch[i]);
+  }
+}
+
+// poly_mul_vec sets |*out| to |x|×|y| mod (𝑥^n - 1).
+static void poly_mul_vec(struct poly *out, const struct poly *x,
+                         const struct poly *y) {
+  OPENSSL_memset((uint16_t *)&x->v[N], 0, 3 * sizeof(uint16_t));
+  OPENSSL_memset((uint16_t *)&y->v[N], 0, 3 * sizeof(uint16_t));
+
+  OPENSSL_STATIC_ASSERT(sizeof(out->v) == sizeof(vec_t) * VECS_PER_POLY,
+                        "struct poly is the wrong size");
+  OPENSSL_STATIC_ASSERT(alignof(struct poly) == alignof(vec_t),
+                        "struct poly has incorrect alignment");
+
+  vec_t prod[VECS_PER_POLY * 2];
+  vec_t scratch[172];
+  poly_mul_vec_aux(prod, scratch, x->vectors, y->vectors, VECS_PER_POLY);
+
+  // |prod| needs to be reduced mod (𝑥^n - 1), which just involves adding the
+  // upper-half to the lower-half. However, N is 701, which isn't a multiple of
+  // the vector size, so the upper-half vectors all have to be shifted before
+  // being added to the lower-half.
+  vec_t *out_vecs = (vec_t *)out->v;
+
+  for (size_t i = 0; i < VECS_PER_POLY; i++) {
+    const vec_t prev = prod[VECS_PER_POLY - 1 + i];
+    const vec_t this = prod[VECS_PER_POLY + i];
+    out_vecs[i] = vec_add(prod[i], vec_merge_3_5(prev, this));
+  }
+
+  OPENSSL_memset(&out->v[N], 0, 3 * sizeof(uint16_t));
+}
+
+#endif  // HRSS_HAVE_VECTOR_UNIT
+
+// poly_mul_novec_aux writes the product of |a| and |b| to |out|, using
+// |scratch| as scratch space. It'll use Karatsuba if the inputs are large
+// enough to warrant it. Each call uses 2*ceil(n/2) elements of |scratch| and
+// the function recurses, except if |n| < 64, when |scratch| isn't used and the
+// recursion stops. If |n| == |N| then |scratch| needs 1318 elements.
+static void poly_mul_novec_aux(uint16_t *out, uint16_t *scratch,
+                               const uint16_t *a, const uint16_t *b, size_t n) {
+  static const size_t kSchoolbookLimit = 64;
+  if (n < kSchoolbookLimit) {
+    OPENSSL_memset(out, 0, sizeof(uint16_t) * n * 2);
+    for (size_t i = 0; i < n; i++) {
+      for (size_t j = 0; j < n; j++) {
+        out[i + j] += (unsigned) a[i] * b[j];
+      }
+    }
+
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The
+  // first is always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const uint16_t *const a_high = &a[low_len];
+  const uint16_t *const b_high = &b[low_len];
+
+  for (size_t i = 0; i < low_len; i++) {
+    out[i] = a_high[i] + a[i];
+    out[high_len + i] = b_high[i] + b[i];
+  }
+  if (high_len != low_len) {
+    out[low_len] = a_high[low_len];
+    out[high_len + low_len] = b_high[low_len];
+  }
+
+  uint16_t *const child_scratch = &scratch[2 * high_len];
+  poly_mul_novec_aux(scratch, child_scratch, out, &out[high_len], high_len);
+  poly_mul_novec_aux(&out[low_len * 2], child_scratch, a_high, b_high,
+                     high_len);
+  poly_mul_novec_aux(out, child_scratch, a, b, low_len);
+
+  for (size_t i = 0; i < low_len * 2; i++) {
+    scratch[i] -= out[i] + out[low_len * 2 + i];
+  }
+  if (low_len != high_len) {
+    scratch[low_len * 2] -= out[low_len * 4];
+    assert(out[low_len * 4 + 1] == 0);
+  }
+
+  for (size_t i = 0; i < high_len * 2; i++) {
+    out[low_len + i] += scratch[i];
+  }
+}
+
+// poly_mul_novec sets |*out| to |x|×|y| mod (𝑥^n - 1).
+static void poly_mul_novec(struct poly *out, const struct poly *x,
+                           const struct poly *y) {
+  uint16_t prod[2 * N];
+  uint16_t scratch[1318];
+  poly_mul_novec_aux(prod, scratch, x->v, y->v, N);
+
+  for (size_t i = 0; i < N; i++) {
+    out->v[i] = prod[i] + prod[i + N];
+  }
+  OPENSSL_memset(&out->v[N], 0, 3 * sizeof(uint16_t));
+}
+
+static void poly_mul(struct poly *r, const struct poly *a,
+                     const struct poly *b) {
+#if defined(POLY_RQ_MUL_ASM)
+  const int has_avx2 = (OPENSSL_ia32cap_P[2] & (1 << 5)) != 0;
+  if (has_avx2) {
+    poly_Rq_mul(r->v, a->v, b->v);
+    return;
+  }
+#endif
+
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+  if (vec_capable()) {
+    poly_mul_vec(r, a, b);
+    return;
+  }
+#endif
+
+  // Fallback, non-vector case.
+  poly_mul_novec(r, a, b);
+}
+
+// poly_mul_x_minus_1 sets |p| to |p|×(𝑥 - 1) mod (𝑥^n - 1).
+static void poly_mul_x_minus_1(struct poly *p) {
+  // Multiplying by (𝑥 - 1) means negating each coefficient and adding in
+  // the value of the previous one.
+  const uint16_t orig_final_coefficient = p->v[N - 1];
+
+  for (size_t i = N - 1; i > 0; i--) {
+    p->v[i] = p->v[i - 1] - p->v[i];
+  }
+  p->v[0] = orig_final_coefficient - p->v[0];
+}
+
+// poly_mod_phiN sets |p| to |p| mod Φ(N).
+static void poly_mod_phiN(struct poly *p) {
+  const uint16_t coeff700 = p->v[N - 1];
+
+  for (unsigned i = 0; i < N; i++) {
+    p->v[i] -= coeff700;
+  }
+}
+
+// poly_clamp reduces each coefficient mod Q.
+static void poly_clamp(struct poly *p) {
+  for (unsigned i = 0; i < N; i++) {
+    p->v[i] &= Q - 1;
+  }
+}
+
+
+// Conversion functions
+// --------------------
+
+// poly2_from_poly sets |*out| to |in| mod 2.
+static void poly2_from_poly(struct poly2 *out, const struct poly *in) {
+  crypto_word_t *words = out->v;
+  unsigned shift = 0;
+  crypto_word_t word = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    word >>= 1;
+    word |= (crypto_word_t)(in->v[i] & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words = word;
+      words++;
+      word = 0;
+      shift = 0;
+    }
+  }
+
+  word >>= BITS_PER_WORD - shift;
+  *words = word;
+}
+
+// mod3 treats |a| as a signed number and returns |a| mod 3.
+static uint16_t mod3(int16_t a) {
+  const int16_t q = ((int32_t)a * 21845) >> 16;
+  int16_t ret = a - 3 * q;
+  // At this point, |ret| is in {0, 1, 2, 3} and that needs to be mapped to {0,
+  // 1, 2, 0}.
+  return ret & ((ret & (ret >> 1)) - 1);
+}
+
+// poly3_from_poly sets |*out| to |in|.
+static void poly3_from_poly(struct poly3 *out, const struct poly *in) {
+  crypto_word_t *words_s = out->s.v;
+  crypto_word_t *words_a = out->a.v;
+  crypto_word_t s = 0;
+  crypto_word_t a = 0;
+  unsigned shift = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    // This duplicates the 13th bit upwards to the top of the uint16,
+    // essentially treating it as a sign bit and converting into a signed int16.
+    // The signed value is reduced mod 3, yielding {0, 1, 2}.
+    const uint16_t v = mod3((int16_t)(in->v[i] << 3) >> 3);
+    s >>= 1;
+    const crypto_word_t s_bit = (crypto_word_t)(v & 2) << (BITS_PER_WORD - 2);
+    s |= s_bit;
+    a >>= 1;
+    a |= s_bit | (crypto_word_t)(v & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words_s = s;
+      words_s++;
+      *words_a = a;
+      words_a++;
+      s = a = 0;
+      shift = 0;
+    }
+  }
+
+  s >>= BITS_PER_WORD - shift;
+  a >>= BITS_PER_WORD - shift;
+  *words_s = s;
+  *words_a = a;
+}
+
+// poly3_from_poly_checked sets |*out| to |in|, which has coefficients in {0, 1,
+// Q-1}. It returns a mask indicating whether all coefficients were found to be
+// in that set.
+static crypto_word_t poly3_from_poly_checked(struct poly3 *out,
+                                             const struct poly *in) {
+  crypto_word_t *words_s = out->s.v;
+  crypto_word_t *words_a = out->a.v;
+  crypto_word_t s = 0;
+  crypto_word_t a = 0;
+  unsigned shift = 0;
+  crypto_word_t ok = CONSTTIME_TRUE_W;
+
+  for (unsigned i = 0; i < N; i++) {
+    const uint16_t v = in->v[i];
+    // Maps {0, 1, Q-1} to {0, 1, 2}.
+    uint16_t mod3 = v & 3;
+    mod3 ^= mod3 >> 1;
+    const uint16_t expected = (uint16_t)((~((mod3 >> 1) - 1)) | mod3) % Q;
+    ok &= constant_time_eq_w(v, expected);
+
+    s >>= 1;
+    const crypto_word_t s_bit = (crypto_word_t)(mod3 & 2)
+                                << (BITS_PER_WORD - 2);
+    s |= s_bit;
+    a >>= 1;
+    a |= s_bit | (crypto_word_t)(mod3 & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words_s = s;
+      words_s++;
+      *words_a = a;
+      words_a++;
+      s = a = 0;
+      shift = 0;
+    }
+  }
+
+  s >>= BITS_PER_WORD - shift;
+  a >>= BITS_PER_WORD - shift;
+  *words_s = s;
+  *words_a = a;
+
+  return ok;
+}
+
+static void poly_from_poly2(struct poly *out, const struct poly2 *in) {
+  const crypto_word_t *words = in->v;
+  unsigned shift = 0;
+  crypto_word_t word = *words;
+
+  for (unsigned i = 0; i < N; i++) {
+    out->v[i] = word & 1;
+    word >>= 1;
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      words++;
+      word = *words;
+      shift = 0;
+    }
+  }
+}
+
+static void poly_from_poly3(struct poly *out, const struct poly3 *in) {
+  const crypto_word_t *words_s = in->s.v;
+  const crypto_word_t *words_a = in->a.v;
+  crypto_word_t word_s = ~(*words_s);
+  crypto_word_t word_a = *words_a;
+  unsigned shift = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    out->v[i] = (uint16_t)(word_s & 1) - 1;
+    out->v[i] |= word_a & 1;
+    word_s >>= 1;
+    word_a >>= 1;
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      words_s++;
+      words_a++;
+      word_s = ~(*words_s);
+      word_a = *words_a;
+      shift = 0;
+    }
+  }
+}
+
+// Polynomial inversion
+// --------------------
+
+// poly_invert_mod2 sets |*out| to |in^-1| (i.e. such that |*out|×|in| = 1 mod
+// Φ(N)), all mod 2. This isn't useful in itself, but is part of doing inversion
+// mod Q.
+static void poly_invert_mod2(struct poly *out, const struct poly *in) {
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  struct poly2 v, r, f, g;
+
+  // v = 0
+  poly2_zero(&v);
+  // r = 1
+  poly2_zero(&r);
+  r.v[0] = 1;
+  // f = all ones.
+  OPENSSL_memset(&f, 0xff, sizeof(struct poly2));
+  f.v[WORDS_PER_POLY - 1] >>= BITS_PER_WORD - BITS_IN_LAST_WORD;
+  // g is the reversal of |in|.
+  poly2_from_poly(&g, in);
+  poly2_mod_phiN(&g);
+  poly2_reverse_700(&g, &g);
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly2_lshift1(&v);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const crypto_word_t g_has_constant_term = lsb_to_all(g.v[0]);
+    const crypto_word_t mask =
+        g_has_constant_term & delta_is_non_negative & delta_is_non_zero;
+
+    const crypto_word_t c = lsb_to_all(f.v[0] & g.v[0]);
+
+    delta = constant_time_select_int(mask, -delta, delta);
+    delta++;
+
+    poly2_cswap(&f, &g, mask);
+    poly2_fmadd(&g, &f, c);
+    poly2_rshift1(&g);
+
+    poly2_cswap(&v, &r, mask);
+    poly2_fmadd(&r, &v, c);
+  }
+
+  assert(delta == 0);
+  assert(f.v[0] & 1);
+  poly2_reverse_700(&v, &v);
+  poly_from_poly2(out, &v);
+}
+
+// poly_invert sets |*out| to |in^-1| (i.e. such that |*out|×|in| = 1 mod Φ(N)).
+static void poly_invert(struct poly *out, const struct poly *in) {
+  // Inversion mod Q, which is done based on the result of inverting mod
+  // 2. See [NTRUTN14] paper, bottom of page two.
+  struct poly a, *b, tmp;
+
+  // a = -in.
+  for (unsigned i = 0; i < N; i++) {
+    a.v[i] = -in->v[i];
+  }
+
+  // b = in^-1 mod 2.
+  b = out;
+  poly_invert_mod2(b, in);
+
+  // We are working mod Q=2**13 and we need to iterate ceil(log_2(13))
+  // times, which is four.
+  for (unsigned i = 0; i < 4; i++) {
+    poly_mul(&tmp, &a, b);
+    tmp.v[0] += 2;
+    poly_mul(b, b, &tmp);
+  }
+}
+
+// Marshal and unmarshal functions for various basic types.
+// --------------------------------------------------------
+
+#define POLY_BYTES 1138
+
+// poly_marshal serialises all but the final coefficient of |in| to |out|.
+static void poly_marshal(uint8_t out[POLY_BYTES], const struct poly *in) {
+  const uint16_t *p = in->v;
+
+  for (size_t i = 0; i < N / 8; i++) {
+    out[0] = p[0];
+    out[1] = (0x1f & (p[0] >> 8)) | ((p[1] & 0x07) << 5);
+    out[2] = p[1] >> 3;
+    out[3] = (3 & (p[1] >> 11)) | ((p[2] & 0x3f) << 2);
+    out[4] = (0x7f & (p[2] >> 6)) | ((p[3] & 0x01) << 7);
+    out[5] = p[3] >> 1;
+    out[6] = (0xf & (p[3] >> 9)) | ((p[4] & 0x0f) << 4);
+    out[7] = p[4] >> 4;
+    out[8] = (1 & (p[4] >> 12)) | ((p[5] & 0x7f) << 1);
+    out[9] = (0x3f & (p[5] >> 7)) | ((p[6] & 0x03) << 6);
+    out[10] = p[6] >> 2;
+    out[11] = (7 & (p[6] >> 10)) | ((p[7] & 0x1f) << 3);
+    out[12] = p[7] >> 5;
+
+    p += 8;
+    out += 13;
+  }
+
+  // There are four remaining values.
+  out[0] = p[0];
+  out[1] = (0x1f & (p[0] >> 8)) | ((p[1] & 0x07) << 5);
+  out[2] = p[1] >> 3;
+  out[3] = (3 & (p[1] >> 11)) | ((p[2] & 0x3f) << 2);
+  out[4] = (0x7f & (p[2] >> 6)) | ((p[3] & 0x01) << 7);
+  out[5] = p[3] >> 1;
+  out[6] = 0xf & (p[3] >> 9);
+}
+
+// poly_unmarshal parses the output of |poly_marshal| and sets |out| such that
+// all but the final coefficients match, and the final coefficient is calculated
+// such that evaluating |out| at one results in zero. It returns one on success
+// or zero if |in| is an invalid encoding.
+static int poly_unmarshal(struct poly *out, const uint8_t in[POLY_BYTES]) {
+  uint16_t *p = out->v;
+
+  for (size_t i = 0; i < N / 8; i++) {
+    p[0] = (uint16_t)(in[0]) | (uint16_t)(in[1] & 0x1f) << 8;
+    p[1] = (uint16_t)(in[1] >> 5) | (uint16_t)(in[2]) << 3 |
+           (uint16_t)(in[3] & 3) << 11;
+    p[2] = (uint16_t)(in[3] >> 2) | (uint16_t)(in[4] & 0x7f) << 6;
+    p[3] = (uint16_t)(in[4] >> 7) | (uint16_t)(in[5]) << 1 |
+           (uint16_t)(in[6] & 0xf) << 9;
+    p[4] = (uint16_t)(in[6] >> 4) | (uint16_t)(in[7]) << 4 |
+           (uint16_t)(in[8] & 1) << 12;
+    p[5] = (uint16_t)(in[8] >> 1) | (uint16_t)(in[9] & 0x3f) << 7;
+    p[6] = (uint16_t)(in[9] >> 6) | (uint16_t)(in[10]) << 2 |
+           (uint16_t)(in[11] & 7) << 10;
+    p[7] = (uint16_t)(in[11] >> 3) | (uint16_t)(in[12]) << 5;
+
+    p += 8;
+    in += 13;
+  }
+
+  // There are four coefficients remaining.
+  p[0] = (uint16_t)(in[0]) | (uint16_t)(in[1] & 0x1f) << 8;
+  p[1] = (uint16_t)(in[1] >> 5) | (uint16_t)(in[2]) << 3 |
+         (uint16_t)(in[3] & 3) << 11;
+  p[2] = (uint16_t)(in[3] >> 2) | (uint16_t)(in[4] & 0x7f) << 6;
+  p[3] = (uint16_t)(in[4] >> 7) | (uint16_t)(in[5]) << 1 |
+         (uint16_t)(in[6] & 0xf) << 9;
+
+  for (unsigned i = 0; i < N - 1; i++) {
+    out->v[i] = (int16_t)(out->v[i] << 3) >> 3;
+  }
+
+  // There are four unused bits in the last byte. We require them to be zero.
+  if ((in[6] & 0xf0) != 0) {
+    return 0;
+  }
+
+  // Set the final coefficient as specifed in [HRSSNIST] 1.9.2 step 6.
+  uint32_t sum = 0;
+  for (size_t i = 0; i < N - 1; i++) {
+    sum += out->v[i];
+  }
+
+  out->v[N - 1] = (uint16_t)(0u - sum);
+
+  return 1;
+}
+
+// mod3_from_modQ maps {0, 1, Q-1, 65535} -> {0, 1, 2, 2}. Note that |v| may
+// have an invalid value when processing attacker-controlled inputs.
+static uint16_t mod3_from_modQ(uint16_t v) {
+  v &= 3;
+  return v ^ (v >> 1);
+}
+
+// poly_marshal_mod3 marshals |in| to |out| where the coefficients of |in| are
+// all in {0, 1, Q-1, 65535} and |in| is mod Φ(N). (Note that coefficients may
+// have invalid values when processing attacker-controlled inputs.)
+static void poly_marshal_mod3(uint8_t out[HRSS_POLY3_BYTES],
+                              const struct poly *in) {
+  const uint16_t *coeffs = in->v;
+
+  // Only 700 coefficients are marshaled because in[700] must be zero.
+  assert(coeffs[N-1] == 0);
+
+  for (size_t i = 0; i < HRSS_POLY3_BYTES; i++) {
+    const uint16_t coeffs0 = mod3_from_modQ(coeffs[0]);
+    const uint16_t coeffs1 = mod3_from_modQ(coeffs[1]);
+    const uint16_t coeffs2 = mod3_from_modQ(coeffs[2]);
+    const uint16_t coeffs3 = mod3_from_modQ(coeffs[3]);
+    const uint16_t coeffs4 = mod3_from_modQ(coeffs[4]);
+    out[i] = coeffs0 + coeffs1 * 3 + coeffs2 * 9 + coeffs3 * 27 + coeffs4 * 81;
+    coeffs += 5;
+  }
+}
+
+// HRSS-specific functions
+// -----------------------
+
+// poly_short_sample samples a vector of values in {0xffff (i.e. -1), 0, 1}.
+// This is the same action as the algorithm in [HRSSNIST] section 1.8.1, but
+// with HRSS-SXY the sampling algorithm is now a private detail of the
+// implementation (previously it had to match between two parties). This
+// function uses that freedom to implement a flatter distribution of values.
+static void poly_short_sample(struct poly *out,
+                              const uint8_t in[HRSS_SAMPLE_BYTES]) {
+  OPENSSL_STATIC_ASSERT(HRSS_SAMPLE_BYTES == N - 1,
+                        "HRSS_SAMPLE_BYTES incorrect");
+  for (size_t i = 0; i < N - 1; i++) {
+    uint16_t v = mod3(in[i]);
+    // Map {0, 1, 2} -> {0, 1, 0xffff}
+    v |= ((v >> 1) ^ 1) - 1;
+    out->v[i] = v;
+  }
+  out->v[N - 1] = 0;
+}
+
+// poly_short_sample_plus performs the T+ sample as defined in [HRSSNIST],
+// section 1.8.2.
+static void poly_short_sample_plus(struct poly *out,
+                                   const uint8_t in[HRSS_SAMPLE_BYTES]) {
+  poly_short_sample(out, in);
+
+  // sum (and the product in the for loop) will overflow. But that's fine
+  // because |sum| is bound by +/- (N-2), and N < 2^15 so it works out.
+  uint16_t sum = 0;
+  for (unsigned i = 0; i < N - 2; i++) {
+    sum += (unsigned) out->v[i] * out->v[i + 1];
+  }
+
+  // If the sum is negative, flip the sign of even-positioned coefficients. (See
+  // page 8 of [HRSS].)
+  sum = ((int16_t) sum) >> 15;
+  const uint16_t scale = sum | (~sum & 1);
+  for (unsigned i = 0; i < N; i += 2) {
+    out->v[i] = (unsigned) out->v[i] * scale;
+  }
+}
+
+// poly_lift computes the function discussed in [HRSS], appendix B.
+static void poly_lift(struct poly *out, const struct poly *a) {
+  // We wish to calculate a/(𝑥-1) mod Φ(N) over GF(3), where Φ(N) is the
+  // Nth cyclotomic polynomial, i.e. 1 + 𝑥 + … + 𝑥^700 (since N is prime).
+
+  // 1/(𝑥-1) has a fairly basic structure that we can exploit to speed this up:
+  //
+  // R.<x> = PolynomialRing(GF(3)…)
+  // inv = R.cyclotomic_polynomial(1).inverse_mod(R.cyclotomic_polynomial(n))
+  // list(inv)[:15]
+  //   [1, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 2]
+  //
+  // This three-element pattern of coefficients repeats for the whole
+  // polynomial.
+  //
+  // Next define the overbar operator such that z̅ = z[0] +
+  // reverse(z[1:]). (Index zero of a polynomial here is the coefficient
+  // of the constant term. So index one is the coefficient of 𝑥 and so
+  // on.)
+  //
+  // A less odd way to define this is to see that z̅ negates the indexes,
+  // so z̅[0] = z[-0], z̅[1] = z[-1] and so on.
+  //
+  // The use of z̅ is that, when working mod (𝑥^701 - 1), vz[0] = <v,
+  // z̅>, vz[1] = <v, 𝑥z̅>, …. (Where <a, b> is the inner product: the sum
+  // of the point-wise products.) Although we calculated the inverse mod
+  // Φ(N), we can work mod (𝑥^N - 1) and reduce mod Φ(N) at the end.
+  // (That's because (𝑥^N - 1) is a multiple of Φ(N).)
+  //
+  // When working mod (𝑥^N - 1), multiplication by 𝑥 is a right-rotation
+  // of the list of coefficients.
+  //
+  // Thus we can consider what the pattern of z̅, 𝑥z̅, 𝑥^2z̅, … looks like:
+  //
+  // def reverse(xs):
+  //   suffix = list(xs[1:])
+  //   suffix.reverse()
+  //   return [xs[0]] + suffix
+  //
+  // def rotate(xs):
+  //   return [xs[-1]] + xs[:-1]
+  //
+  // zoverbar = reverse(list(inv) + [0])
+  // xzoverbar = rotate(reverse(list(inv) + [0]))
+  // x2zoverbar = rotate(rotate(reverse(list(inv) + [0])))
+  //
+  // zoverbar[:15]
+  //   [1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1]
+  // xzoverbar[:15]
+  //   [0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0]
+  // x2zoverbar[:15]
+  //   [2, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2]
+  //
+  // (For a formula for z̅, see lemma two of appendix B.)
+  //
+  // After the first three elements have been taken care of, all then have
+  // a repeating three-element cycle. The next value (𝑥^3z̅) involves
+  // three rotations of the first pattern, thus the three-element cycle
+  // lines up. However, the discontinuity in the first three elements
+  // obviously moves to a different position. Consider the difference
+  // between 𝑥^3z̅ and z̅:
+  //
+  // [x-y for (x,y) in zip(zoverbar, x3zoverbar)][:15]
+  //    [0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+  //
+  // This pattern of differences is the same for all elements, although it
+  // obviously moves right with the rotations.
+  //
+  // From this, we reach algorithm eight of appendix B.
+
+  // Handle the first three elements of the inner products.
+  out->v[0] = a->v[0] + a->v[2];
+  out->v[1] = a->v[1];
+  out->v[2] = -a->v[0] + a->v[2];
+
+  // s0, s1, s2 are added into out->v[0], out->v[1], and out->v[2],
+  // respectively. We do not compute s1 because it's just -(s0 + s1).
+  uint16_t s0 = 0, s2 = 0;
+  for (size_t i = 3; i < 699; i += 3) {
+    s0 += -a->v[i] + a->v[i + 2];
+    // s1 += a->v[i] - a->v[i + 1];
+    s2 += a->v[i + 1] - a->v[i + 2];
+  }
+
+  // Handle the fact that the three-element pattern doesn't fill the
+  // polynomial exactly (since 701 isn't a multiple of three).
+  s0 -= a->v[699];
+  // s1 += a->v[699] - a->v[700];
+  s2 += a->v[700];
+
+  // Note that s0 + s1 + s2 = 0.
+  out->v[0] += s0;
+  out->v[1] -= (s0 + s2); // = s1
+  out->v[2] += s2;
+
+  // Calculate the remaining inner products by taking advantage of the
+  // fact that the pattern repeats every three cycles and the pattern of
+  // differences moves with the rotation.
+  for (size_t i = 3; i < N; i++) {
+    out->v[i] = (out->v[i - 3] - (a->v[i - 2] + a->v[i - 1] + a->v[i]));
+  }
+
+  // Reduce mod Φ(N) by subtracting a multiple of out[700] from every
+  // element and convert to mod Q. (See above about adding twice as
+  // subtraction.)
+  const crypto_word_t v = out->v[700];
+  for (unsigned i = 0; i < N; i++) {
+    const uint16_t vi_mod3 = mod3(out->v[i] - v);
+    // Map {0, 1, 2} to {0, 1, 0xffff}.
+    out->v[i] = (~((vi_mod3 >> 1) - 1)) | vi_mod3;
+  }
+
+  poly_mul_x_minus_1(out);
+}
+
+struct public_key {
+  struct poly ph;
+};
+
+struct private_key {
+  struct poly3 f, f_inverse;
+  struct poly ph_inverse;
+  uint8_t hmac_key[32];
+};
+
+// public_key_from_external converts an external public key pointer into an
+// internal one. Externally the alignment is only specified to be eight bytes
+// but we need 16-byte alignment. We could annotate the external struct with
+// that alignment but we can only assume that malloced pointers are 8-byte
+// aligned in any case. (Even if the underlying malloc returns values with
+// 16-byte alignment, |OPENSSL_malloc| will store an 8-byte size prefix and mess
+// that up.)
+static struct public_key *public_key_from_external(
+    struct HRSS_public_key *ext) {
+  OPENSSL_STATIC_ASSERT(
+      sizeof(struct HRSS_public_key) >= sizeof(struct public_key) + 15,
+      "HRSS public key too small");
+
+  uintptr_t p = (uintptr_t)ext;
+  p = (p + 15) & ~15;
+  return (struct public_key *)p;
+}
+
+// private_key_from_external does the same thing as |public_key_from_external|,
+// but for private keys. See the comment on that function about alignment
+// issues.
+static struct private_key *private_key_from_external(
+    struct HRSS_private_key *ext) {
+  OPENSSL_STATIC_ASSERT(
+      sizeof(struct HRSS_private_key) >= sizeof(struct private_key) + 15,
+      "HRSS private key too small");
+
+  uintptr_t p = (uintptr_t)ext;
+  p = (p + 15) & ~15;
+  return (struct private_key *)p;
+}
+
+void HRSS_generate_key(
+    struct HRSS_public_key *out_pub, struct HRSS_private_key *out_priv,
+    const uint8_t in[HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES + 32]) {
+  struct public_key *pub = public_key_from_external(out_pub);
+  struct private_key *priv = private_key_from_external(out_priv);
+
+  OPENSSL_memcpy(priv->hmac_key, in + 2 * HRSS_SAMPLE_BYTES,
+                 sizeof(priv->hmac_key));
+
+  struct poly f;
+  poly_short_sample_plus(&f, in);
+  poly3_from_poly(&priv->f, &f);
+  HRSS_poly3_invert(&priv->f_inverse, &priv->f);
+
+  // pg_phi1 is p (i.e. 3) × g × Φ(1) (i.e. 𝑥-1).
+  struct poly pg_phi1;
+  poly_short_sample_plus(&pg_phi1, in + HRSS_SAMPLE_BYTES);
+  for (unsigned i = 0; i < N; i++) {
+    pg_phi1.v[i] *= 3;
+  }
+  poly_mul_x_minus_1(&pg_phi1);
+
+  struct poly pfg_phi1;
+  poly_mul(&pfg_phi1, &f, &pg_phi1);
+
+  struct poly pfg_phi1_inverse;
+  poly_invert(&pfg_phi1_inverse, &pfg_phi1);
+
+  poly_mul(&pub->ph, &pfg_phi1_inverse, &pg_phi1);
+  poly_mul(&pub->ph, &pub->ph, &pg_phi1);
+  poly_clamp(&pub->ph);
+
+  poly_mul(&priv->ph_inverse, &pfg_phi1_inverse, &f);
+  poly_mul(&priv->ph_inverse, &priv->ph_inverse, &f);
+  poly_clamp(&priv->ph_inverse);
+}
+
+static const char kSharedKey[] = "shared key";
+
+void HRSS_encap(uint8_t out_ciphertext[POLY_BYTES],
+                uint8_t out_shared_key[32],
+                const struct HRSS_public_key *in_pub,
+                const uint8_t in[HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES]) {
+  const struct public_key *pub =
+      public_key_from_external((struct HRSS_public_key *)in_pub);
+  struct poly m, r, m_lifted;
+  poly_short_sample(&m, in);
+  poly_short_sample(&r, in + HRSS_SAMPLE_BYTES);
+  poly_lift(&m_lifted, &m);
+
+  struct poly prh_plus_m;
+  poly_mul(&prh_plus_m, &r, &pub->ph);
+  for (unsigned i = 0; i < N; i++) {
+    prh_plus_m.v[i] += m_lifted.v[i];
+  }
+
+  poly_marshal(out_ciphertext, &prh_plus_m);
+
+  uint8_t m_bytes[HRSS_POLY3_BYTES], r_bytes[HRSS_POLY3_BYTES];
+  poly_marshal_mod3(m_bytes, &m);
+  poly_marshal_mod3(r_bytes, &r);
+
+  SHA256_CTX hash_ctx;
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, kSharedKey, sizeof(kSharedKey));
+  SHA256_Update(&hash_ctx, m_bytes, sizeof(m_bytes));
+  SHA256_Update(&hash_ctx, r_bytes, sizeof(r_bytes));
+  SHA256_Update(&hash_ctx, out_ciphertext, POLY_BYTES);
+  SHA256_Final(out_shared_key, &hash_ctx);
+}
+
+void HRSS_decap(uint8_t out_shared_key[HRSS_KEY_BYTES],
+                const struct HRSS_private_key *in_priv,
+                const uint8_t *ciphertext, size_t ciphertext_len) {
+  const struct private_key *priv =
+      private_key_from_external((struct HRSS_private_key *)in_priv);
+
+  // This is HMAC, expanded inline rather than using the |HMAC| function so that
+  // we can avoid dealing with possible allocation failures and so keep this
+  // function infallible.
+  uint8_t masked_key[SHA256_CBLOCK];
+  OPENSSL_STATIC_ASSERT(sizeof(priv->hmac_key) <= sizeof(masked_key),
+                        "HRSS HMAC key larger than SHA-256 block size");
+  for (size_t i = 0; i < sizeof(priv->hmac_key); i++) {
+    masked_key[i] = priv->hmac_key[i] ^ 0x36;
+  }
+  OPENSSL_memset(masked_key + sizeof(priv->hmac_key), 0x36,
+                 sizeof(masked_key) - sizeof(priv->hmac_key));
+
+  SHA256_CTX hash_ctx;
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, masked_key, sizeof(masked_key));
+  SHA256_Update(&hash_ctx, ciphertext, ciphertext_len);
+  uint8_t inner_digest[SHA256_DIGEST_LENGTH];
+  SHA256_Final(inner_digest, &hash_ctx);
+
+  for (size_t i = 0; i < sizeof(priv->hmac_key); i++) {
+    masked_key[i] ^= (0x5c ^ 0x36);
+  }
+  OPENSSL_memset(masked_key + sizeof(priv->hmac_key), 0x5c,
+                 sizeof(masked_key) - sizeof(priv->hmac_key));
+
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, masked_key, sizeof(masked_key));
+  SHA256_Update(&hash_ctx, inner_digest, sizeof(inner_digest));
+  OPENSSL_STATIC_ASSERT(HRSS_KEY_BYTES == SHA256_DIGEST_LENGTH,
+                        "HRSS shared key length incorrect");
+  SHA256_Final(out_shared_key, &hash_ctx);
+
+  struct poly c;
+  // If the ciphertext is publicly invalid then a random shared key is still
+  // returned to simply the logic of the caller, but this path is not constant
+  // time.
+  if (ciphertext_len != HRSS_CIPHERTEXT_BYTES ||
+      !poly_unmarshal(&c, ciphertext)) {
+    return;
+  }
+
+  struct poly f, cf;
+  struct poly3 cf3, m3;
+  poly_from_poly3(&f, &priv->f);
+  poly_mul(&cf, &c, &f);
+  poly3_from_poly(&cf3, &cf);
+  // Note that cf3 is not reduced mod Φ(N). That reduction is deferred.
+  HRSS_poly3_mul(&m3, &cf3, &priv->f_inverse);
+
+  struct poly m, m_lifted;
+  poly_from_poly3(&m, &m3);
+  poly_lift(&m_lifted, &m);
+
+  struct poly r;
+  for (unsigned i = 0; i < N; i++) {
+    r.v[i] = c.v[i] - m_lifted.v[i];
+  }
+  poly_mul(&r, &r, &priv->ph_inverse);
+  poly_mod_phiN(&r);
+  poly_clamp(&r);
+
+  struct poly3 r3;
+  crypto_word_t ok = poly3_from_poly_checked(&r3, &r);
+
+  // [NTRUCOMP] section 5.1 includes ReEnc2 and a proof that it's valid. Rather
+  // than do an expensive |poly_mul|, it rebuilds |c'| from |c - lift(m)|
+  // (called |b|) with:
+  //   t = (−b(1)/N) mod Q
+  //   c' = b + tΦ(N) + lift(m) mod Q
+  //
+  // When polynomials are transmitted, the final coefficient is omitted and
+  // |poly_unmarshal| sets it such that f(1) == 0. Thus c(1) == 0. Also,
+  // |poly_lift| multiplies the result by (x-1) and therefore evaluating a
+  // lifted polynomial at 1 is also zero. Thus lift(m)(1) == 0 and so
+  // (c - lift(m))(1) == 0.
+  //
+  // Although we defer the reduction above, |b| is conceptually reduced mod
+  // Φ(N). In order to do that reduction one subtracts |c[N-1]| from every
+  // coefficient. Therefore b(1) = -c[N-1]×N. The value of |t|, above, then is
+  // just recovering |c[N-1]|, and adding tΦ(N) is simply undoing the reduction.
+  // Therefore b + tΦ(N) + lift(m) = c by construction and we don't need to
+  // recover |c| at all so long as we do the checks in
+  // |poly3_from_poly_checked|.
+  //
+  // The |poly_marshal| here then is just confirming that |poly_unmarshal| is
+  // strict and could be omitted.
+
+  uint8_t expected_ciphertext[HRSS_CIPHERTEXT_BYTES];
+  OPENSSL_STATIC_ASSERT(HRSS_CIPHERTEXT_BYTES == POLY_BYTES,
+                        "ciphertext is the wrong size");
+  assert(ciphertext_len == sizeof(expected_ciphertext));
+  poly_marshal(expected_ciphertext, &c);
+
+  uint8_t m_bytes[HRSS_POLY3_BYTES];
+  uint8_t r_bytes[HRSS_POLY3_BYTES];
+  poly_marshal_mod3(m_bytes, &m);
+  poly_marshal_mod3(r_bytes, &r);
+
+  ok &= constant_time_is_zero_w(CRYPTO_memcmp(ciphertext, expected_ciphertext,
+                                              sizeof(expected_ciphertext)));
+
+  uint8_t shared_key[32];
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, kSharedKey, sizeof(kSharedKey));
+  SHA256_Update(&hash_ctx, m_bytes, sizeof(m_bytes));
+  SHA256_Update(&hash_ctx, r_bytes, sizeof(r_bytes));
+  SHA256_Update(&hash_ctx, expected_ciphertext, sizeof(expected_ciphertext));
+  SHA256_Final(shared_key, &hash_ctx);
+
+  for (unsigned i = 0; i < sizeof(shared_key); i++) {
+    out_shared_key[i] =
+        constant_time_select_8(ok, shared_key[i], out_shared_key[i]);
+  }
+}
+
+void HRSS_marshal_public_key(uint8_t out[HRSS_PUBLIC_KEY_BYTES],
+                             const struct HRSS_public_key *in_pub) {
+  const struct public_key *pub =
+      public_key_from_external((struct HRSS_public_key *)in_pub);
+  poly_marshal(out, &pub->ph);
+}
+
+int HRSS_parse_public_key(struct HRSS_public_key *out,
+                          const uint8_t in[HRSS_PUBLIC_KEY_BYTES]) {
+  struct public_key *pub = public_key_from_external(out);
+  if (!poly_unmarshal(&pub->ph, in)) {
+    return 0;
+  }
+  OPENSSL_memset(&pub->ph.v[N], 0, 3 * sizeof(uint16_t));
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c.grpc_back
new file mode 100644
index 0000000..67ff4c1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/hrss.c.grpc_back	
@@ -0,0 +1,2100 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/hrss.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl/bn.h>
+#include <openssl/cpu.h>
+#include <openssl/hmac.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+
+#if defined(_MSC_VER)
+#define RESTRICT
+#else
+#define RESTRICT restrict
+#endif
+
+#include "../internal.h"
+#include "internal.h"
+
+#if defined(OPENSSL_SSE2)
+#include <emmintrin.h>
+#endif
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+#include <arm_neon.h>
+#endif
+
+// This is an implementation of [HRSS], but with a KEM transformation based on
+// [SXY]. The primary references are:
+
+// HRSS: https://eprint.iacr.org/2017/667.pdf
+// HRSSNIST:
+// https://csrc.nist.gov/CSRC/media/Projects/Post-Quantum-Cryptography/documents/round-1/submissions/NTRU_HRSS_KEM.zip
+// SXY: https://eprint.iacr.org/2017/1005.pdf
+// NTRUTN14:
+// https://assets.onboardsecurity.com/static/downloads/NTRU/resources/NTRUTech014.pdf
+// NTRUCOMP: https://eprint.iacr.org/2018/1174
+// SAFEGCD: https://gcd.cr.yp.to/papers.html#safegcd
+
+
+// Vector operations.
+//
+// A couple of functions in this file can use vector operations to meaningful
+// effect. If we're building for a target that has a supported vector unit,
+// |HRSS_HAVE_VECTOR_UNIT| will be defined and |vec_t| will be typedefed to a
+// 128-bit vector. The following functions abstract over the differences between
+// NEON and SSE2 for implementing some vector operations.
+
+// TODO: MSVC can likely also be made to work with vector operations, but ^ must
+// be replaced with _mm_xor_si128, etc.
+#if defined(OPENSSL_SSE2) && (defined(__clang__) || !defined(_MSC_VER))
+
+#define HRSS_HAVE_VECTOR_UNIT
+typedef __m128i vec_t;
+
+// vec_capable returns one iff the current platform supports SSE2.
+static int vec_capable(void) { return 1; }
+
+// vec_add performs a pair-wise addition of four uint16s from |a| and |b|.
+static inline vec_t vec_add(vec_t a, vec_t b) { return _mm_add_epi16(a, b); }
+
+// vec_sub performs a pair-wise subtraction of four uint16s from |a| and |b|.
+static inline vec_t vec_sub(vec_t a, vec_t b) { return _mm_sub_epi16(a, b); }
+
+// vec_mul multiplies each uint16_t in |a| by |b| and returns the resulting
+// vector.
+static inline vec_t vec_mul(vec_t a, uint16_t b) {
+  return _mm_mullo_epi16(a, _mm_set1_epi16(b));
+}
+
+// vec_fma multiplies each uint16_t in |b| by |c|, adds the result to |a|, and
+// returns the resulting vector.
+static inline vec_t vec_fma(vec_t a, vec_t b, uint16_t c) {
+  return _mm_add_epi16(a, _mm_mullo_epi16(b, _mm_set1_epi16(c)));
+}
+
+// vec3_rshift_word right-shifts the 24 uint16_t's in |v| by one uint16.
+static inline void vec3_rshift_word(vec_t v[3]) {
+  // Intel's left and right shifting is backwards compared to the order in
+  // memory because they're based on little-endian order of words (and not just
+  // bytes). So the shifts in this function will be backwards from what one
+  // might expect.
+  const __m128i carry0 = _mm_srli_si128(v[0], 14);
+  v[0] = _mm_slli_si128(v[0], 2);
+
+  const __m128i carry1 = _mm_srli_si128(v[1], 14);
+  v[1] = _mm_slli_si128(v[1], 2);
+  v[1] |= carry0;
+
+  v[2] = _mm_slli_si128(v[2], 2);
+  v[2] |= carry1;
+}
+
+// vec4_rshift_word right-shifts the 32 uint16_t's in |v| by one uint16.
+static inline void vec4_rshift_word(vec_t v[4]) {
+  // Intel's left and right shifting is backwards compared to the order in
+  // memory because they're based on little-endian order of words (and not just
+  // bytes). So the shifts in this function will be backwards from what one
+  // might expect.
+  const __m128i carry0 = _mm_srli_si128(v[0], 14);
+  v[0] = _mm_slli_si128(v[0], 2);
+
+  const __m128i carry1 = _mm_srli_si128(v[1], 14);
+  v[1] = _mm_slli_si128(v[1], 2);
+  v[1] |= carry0;
+
+  const __m128i carry2 = _mm_srli_si128(v[2], 14);
+  v[2] = _mm_slli_si128(v[2], 2);
+  v[2] |= carry1;
+
+  v[3] = _mm_slli_si128(v[3], 2);
+  v[3] |= carry2;
+}
+
+// vec_merge_3_5 takes the final three uint16_t's from |left|, appends the first
+// five from |right|, and returns the resulting vector.
+static inline vec_t vec_merge_3_5(vec_t left, vec_t right) {
+  return _mm_srli_si128(left, 10) | _mm_slli_si128(right, 6);
+}
+
+// poly3_vec_lshift1 left-shifts the 768 bits in |a_s|, and in |a_a|, by one
+// bit.
+static inline void poly3_vec_lshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+
+  for (int i = 0; i < 6; i++) {
+    vec_t next_carry_s = _mm_srli_epi64(a_s[i], 63);
+    a_s[i] = _mm_slli_epi64(a_s[i], 1);
+    a_s[i] |= _mm_slli_si128(next_carry_s, 8);
+    a_s[i] |= carry_s;
+    carry_s = _mm_srli_si128(next_carry_s, 8);
+
+    vec_t next_carry_a = _mm_srli_epi64(a_a[i], 63);
+    a_a[i] = _mm_slli_epi64(a_a[i], 1);
+    a_a[i] |= _mm_slli_si128(next_carry_a, 8);
+    a_a[i] |= carry_a;
+    carry_a = _mm_srli_si128(next_carry_a, 8);
+  }
+}
+
+// poly3_vec_rshift1 right-shifts the 768 bits in |a_s|, and in |a_a|, by one
+// bit.
+static inline void poly3_vec_rshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+
+  for (int i = 5; i >= 0; i--) {
+    const vec_t next_carry_s = _mm_slli_epi64(a_s[i], 63);
+    a_s[i] = _mm_srli_epi64(a_s[i], 1);
+    a_s[i] |= _mm_srli_si128(next_carry_s, 8);
+    a_s[i] |= carry_s;
+    carry_s = _mm_slli_si128(next_carry_s, 8);
+
+    const vec_t next_carry_a = _mm_slli_epi64(a_a[i], 63);
+    a_a[i] = _mm_srli_epi64(a_a[i], 1);
+    a_a[i] |= _mm_srli_si128(next_carry_a, 8);
+    a_a[i] |= carry_a;
+    carry_a = _mm_slli_si128(next_carry_a, 8);
+  }
+}
+
+// vec_broadcast_bit duplicates the least-significant bit in |a| to all bits in
+// a vector and returns the result.
+static inline vec_t vec_broadcast_bit(vec_t a) {
+  return _mm_shuffle_epi32(_mm_srai_epi32(_mm_slli_epi64(a, 63), 31),
+                           0b01010101);
+}
+
+// vec_get_word returns the |i|th uint16_t in |v|. (This is a macro because the
+// compiler requires that |i| be a compile-time constant.)
+#define vec_get_word(v, i) _mm_extract_epi16(v, i)
+
+#elif (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+
+#define HRSS_HAVE_VECTOR_UNIT
+typedef uint16x8_t vec_t;
+
+// These functions perform the same actions as the SSE2 function of the same
+// name, above.
+
+static int vec_capable(void) { return CRYPTO_is_NEON_capable(); }
+
+static inline vec_t vec_add(vec_t a, vec_t b) { return a + b; }
+
+static inline vec_t vec_sub(vec_t a, vec_t b) { return a - b; }
+
+static inline vec_t vec_mul(vec_t a, uint16_t b) { return vmulq_n_u16(a, b); }
+
+static inline vec_t vec_fma(vec_t a, vec_t b, uint16_t c) {
+  return vmlaq_n_u16(a, b, c);
+}
+
+static inline void vec3_rshift_word(vec_t v[3]) {
+  const uint16x8_t kZero = {0};
+  v[2] = vextq_u16(v[1], v[2], 7);
+  v[1] = vextq_u16(v[0], v[1], 7);
+  v[0] = vextq_u16(kZero, v[0], 7);
+}
+
+static inline void vec4_rshift_word(vec_t v[4]) {
+  const uint16x8_t kZero = {0};
+  v[3] = vextq_u16(v[2], v[3], 7);
+  v[2] = vextq_u16(v[1], v[2], 7);
+  v[1] = vextq_u16(v[0], v[1], 7);
+  v[0] = vextq_u16(kZero, v[0], 7);
+}
+
+static inline vec_t vec_merge_3_5(vec_t left, vec_t right) {
+  return vextq_u16(left, right, 5);
+}
+
+static inline uint16_t vec_get_word(vec_t v, unsigned i) {
+  return v[i];
+}
+
+#if !defined(OPENSSL_AARCH64)
+
+static inline vec_t vec_broadcast_bit(vec_t a) {
+  a = (vec_t)vshrq_n_s16(((int16x8_t)a) << 15, 15);
+  return vdupq_lane_u16(vget_low_u16(a), 0);
+}
+
+static inline void poly3_vec_lshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+  const vec_t kZero = {0};
+
+  for (int i = 0; i < 6; i++) {
+    vec_t next_carry_s = a_s[i] >> 15;
+    a_s[i] <<= 1;
+    a_s[i] |= vextq_u16(kZero, next_carry_s, 7);
+    a_s[i] |= carry_s;
+    carry_s = vextq_u16(next_carry_s, kZero, 7);
+
+    vec_t next_carry_a = a_a[i] >> 15;
+    a_a[i] <<= 1;
+    a_a[i] |= vextq_u16(kZero, next_carry_a, 7);
+    a_a[i] |= carry_a;
+    carry_a = vextq_u16(next_carry_a, kZero, 7);
+  }
+}
+
+static inline void poly3_vec_rshift1(vec_t a_s[6], vec_t a_a[6]) {
+  vec_t carry_s = {0};
+  vec_t carry_a = {0};
+  const vec_t kZero = {0};
+
+  for (int i = 5; i >= 0; i--) {
+    vec_t next_carry_s = a_s[i] << 15;
+    a_s[i] >>= 1;
+    a_s[i] |= vextq_u16(next_carry_s, kZero, 1);
+    a_s[i] |= carry_s;
+    carry_s = vextq_u16(kZero, next_carry_s, 1);
+
+    vec_t next_carry_a = a_a[i] << 15;
+    a_a[i] >>= 1;
+    a_a[i] |= vextq_u16(next_carry_a, kZero, 1);
+    a_a[i] |= carry_a;
+    carry_a = vextq_u16(kZero, next_carry_a, 1);
+  }
+}
+
+#endif  // !OPENSSL_AARCH64
+
+#endif  // (ARM || AARCH64) && NEON
+
+// Polynomials in this scheme have N terms.
+// #define N 701
+
+// Underlying data types and arithmetic operations.
+// ------------------------------------------------
+
+// Binary polynomials.
+
+// poly2 represents a degree-N polynomial over GF(2). The words are in little-
+// endian order, i.e. the coefficient of x^0 is the LSB of the first word. The
+// final word is only partially used since N is not a multiple of the word size.
+
+// Defined in internal.h:
+// struct poly2 {
+//  crypto_word_t v[WORDS_PER_POLY];
+// };
+
+OPENSSL_UNUSED static void hexdump(const void *void_in, size_t len) {
+  const uint8_t *in = (const uint8_t *)void_in;
+  for (size_t i = 0; i < len; i++) {
+    printf("%02x", in[i]);
+  }
+  printf("\n");
+}
+
+static void poly2_zero(struct poly2 *p) {
+  OPENSSL_memset(&p->v[0], 0, sizeof(crypto_word_t) * WORDS_PER_POLY);
+}
+
+// word_reverse returns |in| with the bits in reverse order.
+static crypto_word_t word_reverse(crypto_word_t in) {
+#if defined(OPENSSL_64_BIT)
+  static const crypto_word_t kMasks[6] = {
+    UINT64_C(0x5555555555555555),
+    UINT64_C(0x3333333333333333),
+    UINT64_C(0x0f0f0f0f0f0f0f0f),
+    UINT64_C(0x00ff00ff00ff00ff),
+    UINT64_C(0x0000ffff0000ffff),
+    UINT64_C(0x00000000ffffffff),
+  };
+#else
+  static const crypto_word_t kMasks[5] = {
+    0x55555555,
+    0x33333333,
+    0x0f0f0f0f,
+    0x00ff00ff,
+    0x0000ffff,
+  };
+#endif
+
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMasks); i++) {
+    in = ((in >> (1 << i)) & kMasks[i]) | ((in & kMasks[i]) << (1 << i));
+  }
+
+  return in;
+}
+
+// lsb_to_all replicates the least-significant bit of |v| to all bits of the
+// word. This is used in bit-slicing operations to make a vector from a fixed
+// value.
+static crypto_word_t lsb_to_all(crypto_word_t v) { return 0u - (v & 1); }
+
+// poly2_mod_phiN reduces |p| by Φ(N).
+static void poly2_mod_phiN(struct poly2 *p) {
+  // m is the term at x^700, replicated to every bit.
+  const crypto_word_t m =
+      lsb_to_all(p->v[WORDS_PER_POLY - 1] >> (BITS_IN_LAST_WORD - 1));
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    p->v[i] ^= m;
+  }
+  p->v[WORDS_PER_POLY - 1] &= (UINT64_C(1) << (BITS_IN_LAST_WORD - 1)) - 1;
+}
+
+// poly2_reverse_700 reverses the order of the first 700 bits of |in| and writes
+// the result to |out|.
+static void poly2_reverse_700(struct poly2 *out, const struct poly2 *in) {
+  struct poly2 t;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    t.v[i] = word_reverse(in->v[i]);
+  }
+
+  static const size_t shift = BITS_PER_WORD - ((N-1) % BITS_PER_WORD);
+  for (size_t i = 0; i < WORDS_PER_POLY-1; i++) {
+    out->v[i] = t.v[WORDS_PER_POLY-1-i] >> shift;
+    out->v[i] |= t.v[WORDS_PER_POLY-2-i] << (BITS_PER_WORD - shift);
+  }
+  out->v[WORDS_PER_POLY-1] = t.v[0] >> shift;
+}
+
+// poly2_cswap exchanges the values of |a| and |b| if |swap| is all ones.
+static void poly2_cswap(struct poly2 *a, struct poly2 *b, crypto_word_t swap) {
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    const crypto_word_t sum = swap & (a->v[i] ^ b->v[i]);
+    a->v[i] ^= sum;
+    b->v[i] ^= sum;
+  }
+}
+
+// poly2_fmadd sets |out| to |out| + |in| * m, where m is either
+// |CONSTTIME_TRUE_W| or |CONSTTIME_FALSE_W|.
+static void poly2_fmadd(struct poly2 *out, const struct poly2 *in,
+                        crypto_word_t m) {
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    out->v[i] ^= in->v[i] & m;
+  }
+}
+
+// poly2_lshift1 left-shifts |p| by one bit.
+static void poly2_lshift1(struct poly2 *p) {
+  crypto_word_t carry = 0;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    const crypto_word_t next_carry = p->v[i] >> (BITS_PER_WORD - 1);
+    p->v[i] <<= 1;
+    p->v[i] |= carry;
+    carry = next_carry;
+  }
+}
+
+// poly2_rshift1 right-shifts |p| by one bit.
+static void poly2_rshift1(struct poly2 *p) {
+  crypto_word_t carry = 0;
+  for (size_t i = WORDS_PER_POLY - 1; i < WORDS_PER_POLY; i--) {
+    const crypto_word_t next_carry = p->v[i] & 1;
+    p->v[i] >>= 1;
+    p->v[i] |= carry << (BITS_PER_WORD - 1);
+    carry = next_carry;
+  }
+}
+
+// poly2_clear_top_bits clears the bits in the final word that are only for
+// alignment.
+static void poly2_clear_top_bits(struct poly2 *p) {
+  p->v[WORDS_PER_POLY - 1] &= (UINT64_C(1) << BITS_IN_LAST_WORD) - 1;
+}
+
+// poly2_top_bits_are_clear returns one iff the extra bits in the final words of
+// |p| are zero.
+static int poly2_top_bits_are_clear(const struct poly2 *p) {
+  return (p->v[WORDS_PER_POLY - 1] &
+          ~((UINT64_C(1) << BITS_IN_LAST_WORD) - 1)) == 0;
+}
+
+// Ternary polynomials.
+
+// poly3 represents a degree-N polynomial over GF(3). Each coefficient is
+// bitsliced across the |s| and |a| arrays, like this:
+//
+//   s  |  a  | value
+//  -----------------
+//   0  |  0  | 0
+//   0  |  1  | 1
+//   1  |  1  | -1 (aka 2)
+//   1  |  0  | <invalid>
+//
+// ('s' is for sign, and 'a' is the absolute value.)
+//
+// Once bitsliced as such, the following circuits can be used to implement
+// addition and multiplication mod 3:
+//
+//   (s3, a3) = (s1, a1) × (s2, a2)
+//   a3 = a1 ∧ a2
+//   s3 = (s1 ⊕ s2) ∧ a3
+//
+//   (s3, a3) = (s1, a1) + (s2, a2)
+//   t = s1 ⊕ a2
+//   s3 = t ∧ (s2 ⊕ a1)
+//   a3 = (a1 ⊕ a2) ∨ (t ⊕ s2)
+//
+//   (s3, a3) = (s1, a1) - (s2, a2)
+//   t = a1 ⊕ a2
+//   s3 = (s1 ⊕ a2) ∧ (t ⊕ s2)
+//   a3 = t ∨ (s1 ⊕ s2)
+//
+// Negating a value just involves XORing s by a.
+//
+// struct poly3 {
+//   struct poly2 s, a;
+// };
+
+OPENSSL_UNUSED static void poly3_print(const struct poly3 *in) {
+  struct poly3 p;
+  OPENSSL_memcpy(&p, in, sizeof(p));
+  p.s.v[WORDS_PER_POLY - 1] &= ((crypto_word_t)1 << BITS_IN_LAST_WORD) - 1;
+  p.a.v[WORDS_PER_POLY - 1] &= ((crypto_word_t)1 << BITS_IN_LAST_WORD) - 1;
+
+  printf("{[");
+  for (unsigned i = 0; i < WORDS_PER_POLY; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf(BN_HEX_FMT2, p.s.v[i]);
+  }
+  printf("] [");
+  for (unsigned i = 0; i < WORDS_PER_POLY; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf(BN_HEX_FMT2, p.a.v[i]);
+  }
+  printf("]}\n");
+}
+
+static void poly3_zero(struct poly3 *p) {
+  poly2_zero(&p->s);
+  poly2_zero(&p->a);
+}
+
+// poly3_reverse_700 reverses the order of the first 700 terms of |in| and
+// writes them to |out|.
+static void poly3_reverse_700(struct poly3 *out, const struct poly3 *in) {
+  poly2_reverse_700(&out->a, &in->a);
+  poly2_reverse_700(&out->s, &in->s);
+}
+
+// poly3_word_mul sets (|out_s|, |out_a|) to (|s1|, |a1|) × (|s2|, |a2|).
+static void poly3_word_mul(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  *out_a = a1 & a2;
+  *out_s = (s1 ^ s2) & *out_a;
+}
+
+// poly3_word_add sets (|out_s|, |out_a|) to (|s1|, |a1|) + (|s2|, |a2|).
+static void poly3_word_add(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  const crypto_word_t t = s1 ^ a2;
+  *out_s = t & (s2 ^ a1);
+  *out_a = (a1 ^ a2) | (t ^ s2);
+}
+
+// poly3_word_sub sets (|out_s|, |out_a|) to (|s1|, |a1|) - (|s2|, |a2|).
+static void poly3_word_sub(crypto_word_t *out_s, crypto_word_t *out_a,
+                           const crypto_word_t s1, const crypto_word_t a1,
+                           const crypto_word_t s2, const crypto_word_t a2) {
+  const crypto_word_t t = a1 ^ a2;
+  *out_s = (s1 ^ a2) & (t ^ s2);
+  *out_a = t | (s1 ^ s2);
+}
+
+// poly3_mul_const sets |p| to |p|×m, where m = (ms, ma).
+static void poly3_mul_const(struct poly3 *p, crypto_word_t ms,
+                            crypto_word_t ma) {
+  ms = lsb_to_all(ms);
+  ma = lsb_to_all(ma);
+
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_mul(&p->s.v[i], &p->a.v[i], p->s.v[i], p->a.v[i], ms, ma);
+  }
+}
+
+// poly3_fmadd sets |out| to |out| - |in|×m, where m is (ms, ma).
+static void poly3_fmsub(struct poly3 *RESTRICT out,
+                        const struct poly3 *RESTRICT in, crypto_word_t ms,
+                        crypto_word_t ma) {
+  crypto_word_t product_s, product_a;
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_mul(&product_s, &product_a, in->s.v[i], in->a.v[i], ms, ma);
+    poly3_word_sub(&out->s.v[i], &out->a.v[i], out->s.v[i], out->a.v[i],
+                   product_s, product_a);
+  }
+}
+
+// final_bit_to_all replicates the bit in the final position of the last word to
+// all the bits in the word.
+static crypto_word_t final_bit_to_all(crypto_word_t v) {
+  return lsb_to_all(v >> (BITS_IN_LAST_WORD - 1));
+}
+
+// poly3_top_bits_are_clear returns one iff the extra bits in the final words of
+// |p| are zero.
+OPENSSL_UNUSED static int poly3_top_bits_are_clear(const struct poly3 *p) {
+  return poly2_top_bits_are_clear(&p->s) && poly2_top_bits_are_clear(&p->a);
+}
+
+// poly3_mod_phiN reduces |p| by Φ(N).
+static void poly3_mod_phiN(struct poly3 *p) {
+  // In order to reduce by Φ(N) we subtract by the value of the greatest
+  // coefficient.
+  const crypto_word_t factor_s = final_bit_to_all(p->s.v[WORDS_PER_POLY - 1]);
+  const crypto_word_t factor_a = final_bit_to_all(p->a.v[WORDS_PER_POLY - 1]);
+
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    poly3_word_sub(&p->s.v[i], &p->a.v[i], p->s.v[i], p->a.v[i], factor_s,
+                   factor_a);
+  }
+
+  poly2_clear_top_bits(&p->s);
+  poly2_clear_top_bits(&p->a);
+}
+
+static void poly3_cswap(struct poly3 *a, struct poly3 *b, crypto_word_t swap) {
+  poly2_cswap(&a->s, &b->s, swap);
+  poly2_cswap(&a->a, &b->a, swap);
+}
+
+static void poly3_lshift1(struct poly3 *p) {
+  poly2_lshift1(&p->s);
+  poly2_lshift1(&p->a);
+}
+
+static void poly3_rshift1(struct poly3 *p) {
+  poly2_rshift1(&p->s);
+  poly2_rshift1(&p->a);
+}
+
+// poly3_span represents a pointer into a poly3.
+struct poly3_span {
+  crypto_word_t *s;
+  crypto_word_t *a;
+};
+
+// poly3_span_add adds |n| words of values from |a| and |b| and writes the
+// result to |out|.
+static void poly3_span_add(const struct poly3_span *out,
+                           const struct poly3_span *a,
+                           const struct poly3_span *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    poly3_word_add(&out->s[i], &out->a[i], a->s[i], a->a[i], b->s[i], b->a[i]);
+  }
+}
+
+// poly3_span_sub subtracts |n| words of |b| from |n| words of |a|.
+static void poly3_span_sub(const struct poly3_span *a,
+                           const struct poly3_span *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    poly3_word_sub(&a->s[i], &a->a[i], a->s[i], a->a[i], b->s[i], b->a[i]);
+  }
+}
+
+// poly3_mul_aux is a recursive function that multiplies |n| words from |a| and
+// |b| and writes 2×|n| words to |out|. Each call uses 2*ceil(n/2) elements of
+// |scratch| and the function recurses, except if |n| == 1, when |scratch| isn't
+// used and the recursion stops. For |n| in {11, 22}, the transitive total
+// amount of |scratch| needed happens to be 2n+2.
+static void poly3_mul_aux(const struct poly3_span *out,
+                          const struct poly3_span *scratch,
+                          const struct poly3_span *a,
+                          const struct poly3_span *b, size_t n) {
+  if (n == 1) {
+    crypto_word_t r_s_low = 0, r_s_high = 0, r_a_low = 0, r_a_high = 0;
+    crypto_word_t b_s = b->s[0], b_a = b->a[0];
+    const crypto_word_t a_s = a->s[0], a_a = a->a[0];
+
+    for (size_t i = 0; i < BITS_PER_WORD; i++) {
+      // Multiply (s, a) by the next value from (b_s, b_a).
+      crypto_word_t m_s, m_a;
+      poly3_word_mul(&m_s, &m_a, a_s, a_a, lsb_to_all(b_s), lsb_to_all(b_a));
+      b_s >>= 1;
+      b_a >>= 1;
+
+      if (i == 0) {
+        // Special case otherwise the code tries to shift by BITS_PER_WORD
+        // below, which is undefined.
+        r_s_low = m_s;
+        r_a_low = m_a;
+        continue;
+      }
+
+      // Shift the multiplication result to the correct position.
+      const crypto_word_t m_s_low = m_s << i;
+      const crypto_word_t m_s_high = m_s >> (BITS_PER_WORD - i);
+      const crypto_word_t m_a_low = m_a << i;
+      const crypto_word_t m_a_high = m_a >> (BITS_PER_WORD - i);
+
+      // Add into the result.
+      poly3_word_add(&r_s_low, &r_a_low, r_s_low, r_a_low, m_s_low, m_a_low);
+      poly3_word_add(&r_s_high, &r_a_high, r_s_high, r_a_high, m_s_high,
+                     m_a_high);
+    }
+
+    out->s[0] = r_s_low;
+    out->s[1] = r_s_high;
+    out->a[0] = r_a_low;
+    out->a[1] = r_a_high;
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The first
+  // is always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const struct poly3_span a_high = {&a->s[low_len], &a->a[low_len]};
+  const struct poly3_span b_high = {&b->s[low_len], &b->a[low_len]};
+
+  // Store a_1 + a_0 in the first half of |out| and b_1 + b_0 in the second
+  // half.
+  const struct poly3_span a_cross_sum = *out;
+  const struct poly3_span b_cross_sum = {&out->s[high_len], &out->a[high_len]};
+  poly3_span_add(&a_cross_sum, a, &a_high, low_len);
+  poly3_span_add(&b_cross_sum, b, &b_high, low_len);
+  if (high_len != low_len) {
+    a_cross_sum.s[low_len] = a_high.s[low_len];
+    a_cross_sum.a[low_len] = a_high.a[low_len];
+    b_cross_sum.s[low_len] = b_high.s[low_len];
+    b_cross_sum.a[low_len] = b_high.a[low_len];
+  }
+
+  const struct poly3_span child_scratch = {&scratch->s[2 * high_len],
+                                           &scratch->a[2 * high_len]};
+  const struct poly3_span out_mid = {&out->s[low_len], &out->a[low_len]};
+  const struct poly3_span out_high = {&out->s[2 * low_len],
+                                      &out->a[2 * low_len]};
+
+  // Calculate (a_1 + a_0) × (b_1 + b_0) and write to scratch buffer.
+  poly3_mul_aux(scratch, &child_scratch, &a_cross_sum, &b_cross_sum, high_len);
+  // Calculate a_1 × b_1.
+  poly3_mul_aux(&out_high, &child_scratch, &a_high, &b_high, high_len);
+  // Calculate a_0 × b_0.
+  poly3_mul_aux(out, &child_scratch, a, b, low_len);
+
+  // Subtract those last two products from the first.
+  poly3_span_sub(scratch, out, low_len * 2);
+  poly3_span_sub(scratch, &out_high, high_len * 2);
+
+  // Add the middle product into the output.
+  poly3_span_add(&out_mid, &out_mid, scratch, high_len * 2);
+}
+
+// HRSS_poly3_mul sets |*out| to |x|×|y| mod Φ(N).
+void HRSS_poly3_mul(struct poly3 *out, const struct poly3 *x,
+                    const struct poly3 *y) {
+  crypto_word_t prod_s[WORDS_PER_POLY * 2];
+  crypto_word_t prod_a[WORDS_PER_POLY * 2];
+  crypto_word_t scratch_s[WORDS_PER_POLY * 2 + 2];
+  crypto_word_t scratch_a[WORDS_PER_POLY * 2 + 2];
+  const struct poly3_span prod_span = {prod_s, prod_a};
+  const struct poly3_span scratch_span = {scratch_s, scratch_a};
+  const struct poly3_span x_span = {(crypto_word_t *)x->s.v,
+                                    (crypto_word_t *)x->a.v};
+  const struct poly3_span y_span = {(crypto_word_t *)y->s.v,
+                                    (crypto_word_t *)y->a.v};
+
+  poly3_mul_aux(&prod_span, &scratch_span, &x_span, &y_span, WORDS_PER_POLY);
+
+  // |prod| needs to be reduced mod (𝑥^n - 1), which just involves adding the
+  // upper-half to the lower-half. However, N is 701, which isn't a multiple of
+  // BITS_PER_WORD, so the upper-half vectors all have to be shifted before
+  // being added to the lower-half.
+  for (size_t i = 0; i < WORDS_PER_POLY; i++) {
+    crypto_word_t v_s = prod_s[WORDS_PER_POLY + i - 1] >> BITS_IN_LAST_WORD;
+    v_s |= prod_s[WORDS_PER_POLY + i] << (BITS_PER_WORD - BITS_IN_LAST_WORD);
+    crypto_word_t v_a = prod_a[WORDS_PER_POLY + i - 1] >> BITS_IN_LAST_WORD;
+    v_a |= prod_a[WORDS_PER_POLY + i] << (BITS_PER_WORD - BITS_IN_LAST_WORD);
+
+    poly3_word_add(&out->s.v[i], &out->a.v[i], prod_s[i], prod_a[i], v_s, v_a);
+  }
+
+  poly3_mod_phiN(out);
+}
+
+#if defined(HRSS_HAVE_VECTOR_UNIT) && !defined(OPENSSL_AARCH64)
+
+// poly3_vec_cswap swaps (|a_s|, |a_a|) and (|b_s|, |b_a|) if |swap| is
+// |0xff..ff|. Otherwise, |swap| must be zero.
+static inline void poly3_vec_cswap(vec_t a_s[6], vec_t a_a[6], vec_t b_s[6],
+                                   vec_t b_a[6], const vec_t swap) {
+  for (int i = 0; i < 6; i++) {
+    const vec_t sum_s = swap & (a_s[i] ^ b_s[i]);
+    a_s[i] ^= sum_s;
+    b_s[i] ^= sum_s;
+
+    const vec_t sum_a = swap & (a_a[i] ^ b_a[i]);
+    a_a[i] ^= sum_a;
+    b_a[i] ^= sum_a;
+  }
+}
+
+// poly3_vec_fmsub subtracts (|ms|, |ma|) × (|b_s|, |b_a|) from (|a_s|, |a_a|).
+static inline void poly3_vec_fmsub(vec_t a_s[6], vec_t a_a[6], vec_t b_s[6],
+                                   vec_t b_a[6], const vec_t ms,
+                                   const vec_t ma) {
+  for (int i = 0; i < 6; i++) {
+    // See the bitslice formula, above.
+    const vec_t s = b_s[i];
+    const vec_t a = b_a[i];
+    const vec_t product_a = a & ma;
+    const vec_t product_s = (s ^ ms) & product_a;
+
+    const vec_t out_s = a_s[i];
+    const vec_t out_a = a_a[i];
+    const vec_t t = out_a ^ product_a;
+    a_s[i] = (out_s ^ product_a) & (t ^ product_s);
+    a_a[i] = t | (out_s ^ product_s);
+  }
+}
+
+// poly3_invert_vec sets |*out| to |in|^-1, i.e. such that |out|×|in| == 1 mod
+// Φ(N).
+static void poly3_invert_vec(struct poly3 *out, const struct poly3 *in) {
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  const vec_t kZero = {0};
+  const vec_t kOne = {1};
+  static const uint8_t kBottomSixtyOne[sizeof(vec_t)] = {
+      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f};
+
+  vec_t v_s[6], v_a[6], r_s[6], r_a[6], f_s[6], f_a[6], g_s[6], g_a[6];
+  // v = 0
+  memset(&v_s, 0, sizeof(v_s));
+  memset(&v_a, 0, sizeof(v_a));
+  // r = 1
+  memset(&r_s, 0, sizeof(r_s));
+  memset(&r_a, 0, sizeof(r_a));
+  r_a[0] = kOne;
+  // f = all ones.
+  memset(f_s, 0, sizeof(f_s));
+  memset(f_a, 0xff, 5 * sizeof(vec_t));
+  memcpy(&f_a[5], kBottomSixtyOne, sizeof(kBottomSixtyOne));
+  // g is the reversal of |in|.
+  struct poly3 in_reversed;
+  poly3_reverse_700(&in_reversed, in);
+  g_s[5] = kZero;
+  memcpy(&g_s, &in_reversed.s.v, WORDS_PER_POLY * sizeof(crypto_word_t));
+  g_a[5] = kZero;
+  memcpy(&g_a, &in_reversed.a.v, WORDS_PER_POLY * sizeof(crypto_word_t));
+
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly3_vec_lshift1(v_s, v_a);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const vec_t g_has_constant_term = vec_broadcast_bit(g_a[0]);
+    const vec_t mask_w =
+        {delta_is_non_negative & delta_is_non_zero};
+    const vec_t mask = vec_broadcast_bit(mask_w) & g_has_constant_term;
+
+    const vec_t c_a = vec_broadcast_bit(f_a[0] & g_a[0]);
+    const vec_t c_s = vec_broadcast_bit((f_s[0] ^ g_s[0]) & c_a);
+
+    delta = constant_time_select_int(lsb_to_all(mask[0]), -delta, delta);
+    delta++;
+
+    poly3_vec_cswap(f_s, f_a, g_s, g_a, mask);
+    poly3_vec_fmsub(g_s, g_a, f_s, f_a, c_s, c_a);
+    poly3_vec_rshift1(g_s, g_a);
+
+    poly3_vec_cswap(v_s, v_a, r_s, r_a, mask);
+    poly3_vec_fmsub(r_s, r_a, v_s, v_a, c_s, c_a);
+  }
+
+  assert(delta == 0);
+  memcpy(out->s.v, v_s, WORDS_PER_POLY * sizeof(crypto_word_t));
+  memcpy(out->a.v, v_a, WORDS_PER_POLY * sizeof(crypto_word_t));
+  poly3_mul_const(out, vec_get_word(f_s[0], 0), vec_get_word(f_a[0], 0));
+  poly3_reverse_700(out, out);
+}
+
+#endif  // HRSS_HAVE_VECTOR_UNIT
+
+// HRSS_poly3_invert sets |*out| to |in|^-1, i.e. such that |out|×|in| == 1 mod
+// Φ(N).
+void HRSS_poly3_invert(struct poly3 *out, const struct poly3 *in) {
+  // The vector version of this function seems slightly slower on AArch64, but
+  // is useful on ARMv7 and x86-64.
+#if defined(HRSS_HAVE_VECTOR_UNIT) && !defined(OPENSSL_AARCH64)
+  if (vec_capable()) {
+    poly3_invert_vec(out, in);
+    return;
+  }
+#endif
+
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  struct poly3 v, r, f, g;
+  // v = 0
+  poly3_zero(&v);
+  // r = 1
+  poly3_zero(&r);
+  r.a.v[0] = 1;
+  // f = all ones.
+  OPENSSL_memset(&f.s, 0, sizeof(struct poly2));
+  OPENSSL_memset(&f.a, 0xff, sizeof(struct poly2));
+  f.a.v[WORDS_PER_POLY - 1] >>= BITS_PER_WORD - BITS_IN_LAST_WORD;
+  // g is the reversal of |in|.
+  poly3_reverse_700(&g, in);
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly3_lshift1(&v);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const crypto_word_t g_has_constant_term = lsb_to_all(g.a.v[0]);
+    const crypto_word_t mask =
+        g_has_constant_term & delta_is_non_negative & delta_is_non_zero;
+
+    crypto_word_t c_s, c_a;
+    poly3_word_mul(&c_s, &c_a, f.s.v[0], f.a.v[0], g.s.v[0], g.a.v[0]);
+    c_s = lsb_to_all(c_s);
+    c_a = lsb_to_all(c_a);
+
+    delta = constant_time_select_int(mask, -delta, delta);
+    delta++;
+
+    poly3_cswap(&f, &g, mask);
+    poly3_fmsub(&g, &f, c_s, c_a);
+    poly3_rshift1(&g);
+
+    poly3_cswap(&v, &r, mask);
+    poly3_fmsub(&r, &v, c_s, c_a);
+  }
+
+  assert(delta == 0);
+  poly3_mul_const(&v, f.s.v[0], f.a.v[0]);
+  poly3_reverse_700(out, &v);
+}
+
+// Polynomials in Q.
+
+// Coefficients are reduced mod Q. (Q is clearly not prime, therefore the
+// coefficients do not form a field.)
+#define Q 8192
+
+// VECS_PER_POLY is the number of 128-bit vectors needed to represent a
+// polynomial.
+#define COEFFICIENTS_PER_VEC (sizeof(vec_t) / sizeof(uint16_t))
+#define VECS_PER_POLY ((N + COEFFICIENTS_PER_VEC - 1) / COEFFICIENTS_PER_VEC)
+
+// poly represents a polynomial with coefficients mod Q. Note that, while Q is a
+// power of two, this does not operate in GF(Q). That would be a binary field
+// but this is simply mod Q. Thus the coefficients are not a field.
+//
+// Coefficients are ordered little-endian, thus the coefficient of x^0 is the
+// first element of the array.
+struct poly {
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+  union {
+    // N + 3 = 704, which is a multiple of 64 and thus aligns things, esp for
+    // the vector code.
+    uint16_t v[N + 3];
+    vec_t vectors[VECS_PER_POLY];
+  };
+#else
+  // Even if !HRSS_HAVE_VECTOR_UNIT, external assembly may be called that
+  // requires alignment.
+  alignas(16) uint16_t v[N + 3];
+#endif
+};
+
+OPENSSL_UNUSED static void poly_print(const struct poly *p) {
+  printf("[");
+  for (unsigned i = 0; i < N; i++) {
+    if (i) {
+      printf(" ");
+    }
+    printf("%d", p->v[i]);
+  }
+  printf("]\n");
+}
+
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+
+// poly_mul_vec_aux is a recursive function that multiplies |n| words from |a|
+// and |b| and writes 2×|n| words to |out|. Each call uses 2*ceil(n/2) elements
+// of |scratch| and the function recurses, except if |n| < 3, when |scratch|
+// isn't used and the recursion stops. If |n| == |VECS_PER_POLY| then |scratch|
+// needs 172 elements.
+static void poly_mul_vec_aux(vec_t *restrict out, vec_t *restrict scratch,
+                             const vec_t *restrict a, const vec_t *restrict b,
+                             const size_t n) {
+  // In [HRSS], the technique they used for polynomial multiplication is
+  // described: they start with Toom-4 at the top level and then two layers of
+  // Karatsuba. Karatsuba is a specific instance of the general Toom–Cook
+  // decomposition, which splits an input n-ways and produces 2n-1
+  // multiplications of those parts. So, starting with 704 coefficients (rounded
+  // up from 701 to have more factors of two), Toom-4 gives seven
+  // multiplications of degree-174 polynomials. Each round of Karatsuba (which
+  // is Toom-2) increases the number of multiplications by a factor of three
+  // while halving the size of the values being multiplied. So two rounds gives
+  // 63 multiplications of degree-44 polynomials. Then they (I think) form
+  // vectors by gathering all 63 coefficients of each power together, for each
+  // input, and doing more rounds of Karatsuba on the vectors until they bottom-
+  // out somewhere with schoolbook multiplication.
+  //
+  // I tried something like that for NEON. NEON vectors are 128 bits so hold
+  // eight coefficients. I wrote a function that did Karatsuba on eight
+  // multiplications at the same time, using such vectors, and a Go script that
+  // decomposed from degree-704, with Karatsuba in non-transposed form, until it
+  // reached multiplications of degree-44. It batched up those 81
+  // multiplications into lots of eight with a single one left over (which was
+  // handled directly).
+  //
+  // It worked, but it was significantly slower than the dumb algorithm used
+  // below. Potentially that was because I misunderstood how [HRSS] did it, or
+  // because Clang is bad at generating good code from NEON intrinsics on ARMv7.
+  // (Which is true: the code generated by Clang for the below is pretty crap.)
+  //
+  // This algorithm is much simpler. It just does Karatsuba decomposition all
+  // the way down and never transposes. When it gets down to degree-16 or
+  // degree-24 values, they are multiplied using schoolbook multiplication and
+  // vector intrinsics. The vector operations form each of the eight phase-
+  // shifts of one of the inputs, point-wise multiply, and then add into the
+  // result at the correct place. This means that 33% (degree-16) or 25%
+  // (degree-24) of the multiplies and adds are wasted, but it does ok.
+  if (n == 2) {
+    vec_t result[4];
+    vec_t vec_a[3];
+    static const vec_t kZero = {0};
+    vec_a[0] = a[0];
+    vec_a[1] = a[1];
+    vec_a[2] = kZero;
+
+    result[0] = vec_mul(vec_a[0], vec_get_word(b[0], 0));
+    result[1] = vec_mul(vec_a[1], vec_get_word(b[0], 0));
+
+    result[1] = vec_fma(result[1], vec_a[0], vec_get_word(b[1], 0));
+    result[2] = vec_mul(vec_a[1], vec_get_word(b[1], 0));
+    result[3] = kZero;
+
+    vec3_rshift_word(vec_a);
+
+#define BLOCK(x, y)                                                      \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] =                                                      \
+        vec_fma(result[x + 2], vec_a[2], vec_get_word(b[y / 8], y % 8)); \
+  } while (0)
+
+    BLOCK(0, 1);
+    BLOCK(1, 9);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 2);
+    BLOCK(1, 10);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 3);
+    BLOCK(1, 11);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 4);
+    BLOCK(1, 12);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 5);
+    BLOCK(1, 13);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 6);
+    BLOCK(1, 14);
+
+    vec3_rshift_word(vec_a);
+
+    BLOCK(0, 7);
+    BLOCK(1, 15);
+
+#undef BLOCK
+
+    memcpy(out, result, sizeof(result));
+    return;
+  }
+
+  if (n == 3) {
+    vec_t result[6];
+    vec_t vec_a[4];
+    static const vec_t kZero = {0};
+    vec_a[0] = a[0];
+    vec_a[1] = a[1];
+    vec_a[2] = a[2];
+    vec_a[3] = kZero;
+
+    result[0] = vec_mul(a[0], vec_get_word(b[0], 0));
+    result[1] = vec_mul(a[1], vec_get_word(b[0], 0));
+    result[2] = vec_mul(a[2], vec_get_word(b[0], 0));
+
+#define BLOCK_PRE(x, y)                                                  \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] = vec_mul(vec_a[2], vec_get_word(b[y / 8], y % 8));    \
+  } while (0)
+
+    BLOCK_PRE(1, 8);
+    BLOCK_PRE(2, 16);
+
+    result[5] = kZero;
+
+    vec4_rshift_word(vec_a);
+
+#define BLOCK(x, y)                                                      \
+  do {                                                                   \
+    result[x + 0] =                                                      \
+        vec_fma(result[x + 0], vec_a[0], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 1] =                                                      \
+        vec_fma(result[x + 1], vec_a[1], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 2] =                                                      \
+        vec_fma(result[x + 2], vec_a[2], vec_get_word(b[y / 8], y % 8)); \
+    result[x + 3] =                                                      \
+        vec_fma(result[x + 3], vec_a[3], vec_get_word(b[y / 8], y % 8)); \
+  } while (0)
+
+    BLOCK(0, 1);
+    BLOCK(1, 9);
+    BLOCK(2, 17);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 2);
+    BLOCK(1, 10);
+    BLOCK(2, 18);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 3);
+    BLOCK(1, 11);
+    BLOCK(2, 19);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 4);
+    BLOCK(1, 12);
+    BLOCK(2, 20);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 5);
+    BLOCK(1, 13);
+    BLOCK(2, 21);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 6);
+    BLOCK(1, 14);
+    BLOCK(2, 22);
+
+    vec4_rshift_word(vec_a);
+
+    BLOCK(0, 7);
+    BLOCK(1, 15);
+    BLOCK(2, 23);
+
+#undef BLOCK
+#undef BLOCK_PRE
+
+    memcpy(out, result, sizeof(result));
+
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The first is
+  // always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const vec_t *a_high = &a[low_len];
+  const vec_t *b_high = &b[low_len];
+
+  // Store a_1 + a_0 in the first half of |out| and b_1 + b_0 in the second
+  // half.
+  for (size_t i = 0; i < low_len; i++) {
+    out[i] = vec_add(a_high[i], a[i]);
+    out[high_len + i] = vec_add(b_high[i], b[i]);
+  }
+  if (high_len != low_len) {
+    out[low_len] = a_high[low_len];
+    out[high_len + low_len] = b_high[low_len];
+  }
+
+  vec_t *const child_scratch = &scratch[2 * high_len];
+  // Calculate (a_1 + a_0) × (b_1 + b_0) and write to scratch buffer.
+  poly_mul_vec_aux(scratch, child_scratch, out, &out[high_len], high_len);
+  // Calculate a_1 × b_1.
+  poly_mul_vec_aux(&out[low_len * 2], child_scratch, a_high, b_high, high_len);
+  // Calculate a_0 × b_0.
+  poly_mul_vec_aux(out, child_scratch, a, b, low_len);
+
+  // Subtract those last two products from the first.
+  for (size_t i = 0; i < low_len * 2; i++) {
+    scratch[i] = vec_sub(scratch[i], vec_add(out[i], out[low_len * 2 + i]));
+  }
+  if (low_len != high_len) {
+    scratch[low_len * 2] = vec_sub(scratch[low_len * 2], out[low_len * 4]);
+    scratch[low_len * 2 + 1] =
+        vec_sub(scratch[low_len * 2 + 1], out[low_len * 4 + 1]);
+  }
+
+  // Add the middle product into the output.
+  for (size_t i = 0; i < high_len * 2; i++) {
+    out[low_len + i] = vec_add(out[low_len + i], scratch[i]);
+  }
+}
+
+// poly_mul_vec sets |*out| to |x|×|y| mod (𝑥^n - 1).
+static void poly_mul_vec(struct poly *out, const struct poly *x,
+                         const struct poly *y) {
+  OPENSSL_memset((uint16_t *)&x->v[N], 0, 3 * sizeof(uint16_t));
+  OPENSSL_memset((uint16_t *)&y->v[N], 0, 3 * sizeof(uint16_t));
+
+  OPENSSL_STATIC_ASSERT(sizeof(out->v) == sizeof(vec_t) * VECS_PER_POLY,
+                        "struct poly is the wrong size");
+  OPENSSL_STATIC_ASSERT(alignof(struct poly) == alignof(vec_t),
+                        "struct poly has incorrect alignment");
+
+  vec_t prod[VECS_PER_POLY * 2];
+  vec_t scratch[172];
+  poly_mul_vec_aux(prod, scratch, x->vectors, y->vectors, VECS_PER_POLY);
+
+  // |prod| needs to be reduced mod (𝑥^n - 1), which just involves adding the
+  // upper-half to the lower-half. However, N is 701, which isn't a multiple of
+  // the vector size, so the upper-half vectors all have to be shifted before
+  // being added to the lower-half.
+  vec_t *out_vecs = (vec_t *)out->v;
+
+  for (size_t i = 0; i < VECS_PER_POLY; i++) {
+    const vec_t prev = prod[VECS_PER_POLY - 1 + i];
+    const vec_t this = prod[VECS_PER_POLY + i];
+    out_vecs[i] = vec_add(prod[i], vec_merge_3_5(prev, this));
+  }
+
+  OPENSSL_memset(&out->v[N], 0, 3 * sizeof(uint16_t));
+}
+
+#endif  // HRSS_HAVE_VECTOR_UNIT
+
+// poly_mul_novec_aux writes the product of |a| and |b| to |out|, using
+// |scratch| as scratch space. It'll use Karatsuba if the inputs are large
+// enough to warrant it. Each call uses 2*ceil(n/2) elements of |scratch| and
+// the function recurses, except if |n| < 64, when |scratch| isn't used and the
+// recursion stops. If |n| == |N| then |scratch| needs 1318 elements.
+static void poly_mul_novec_aux(uint16_t *out, uint16_t *scratch,
+                               const uint16_t *a, const uint16_t *b, size_t n) {
+  static const size_t kSchoolbookLimit = 64;
+  if (n < kSchoolbookLimit) {
+    OPENSSL_memset(out, 0, sizeof(uint16_t) * n * 2);
+    for (size_t i = 0; i < n; i++) {
+      for (size_t j = 0; j < n; j++) {
+        out[i + j] += (unsigned) a[i] * b[j];
+      }
+    }
+
+    return;
+  }
+
+  // Karatsuba multiplication.
+  // https://en.wikipedia.org/wiki/Karatsuba_algorithm
+
+  // When |n| is odd, the two "halves" will have different lengths. The
+  // first is always the smaller.
+  const size_t low_len = n / 2;
+  const size_t high_len = n - low_len;
+  const uint16_t *const a_high = &a[low_len];
+  const uint16_t *const b_high = &b[low_len];
+
+  for (size_t i = 0; i < low_len; i++) {
+    out[i] = a_high[i] + a[i];
+    out[high_len + i] = b_high[i] + b[i];
+  }
+  if (high_len != low_len) {
+    out[low_len] = a_high[low_len];
+    out[high_len + low_len] = b_high[low_len];
+  }
+
+  uint16_t *const child_scratch = &scratch[2 * high_len];
+  poly_mul_novec_aux(scratch, child_scratch, out, &out[high_len], high_len);
+  poly_mul_novec_aux(&out[low_len * 2], child_scratch, a_high, b_high,
+                     high_len);
+  poly_mul_novec_aux(out, child_scratch, a, b, low_len);
+
+  for (size_t i = 0; i < low_len * 2; i++) {
+    scratch[i] -= out[i] + out[low_len * 2 + i];
+  }
+  if (low_len != high_len) {
+    scratch[low_len * 2] -= out[low_len * 4];
+    assert(out[low_len * 4 + 1] == 0);
+  }
+
+  for (size_t i = 0; i < high_len * 2; i++) {
+    out[low_len + i] += scratch[i];
+  }
+}
+
+// poly_mul_novec sets |*out| to |x|×|y| mod (𝑥^n - 1).
+static void poly_mul_novec(struct poly *out, const struct poly *x,
+                           const struct poly *y) {
+  uint16_t prod[2 * N];
+  uint16_t scratch[1318];
+  poly_mul_novec_aux(prod, scratch, x->v, y->v, N);
+
+  for (size_t i = 0; i < N; i++) {
+    out->v[i] = prod[i] + prod[i + N];
+  }
+  OPENSSL_memset(&out->v[N], 0, 3 * sizeof(uint16_t));
+}
+
+static void poly_mul(struct poly *r, const struct poly *a,
+                     const struct poly *b) {
+#if defined(POLY_RQ_MUL_ASM)
+  const int has_avx2 = (OPENSSL_ia32cap_P[2] & (1 << 5)) != 0;
+  if (has_avx2) {
+    poly_Rq_mul(r->v, a->v, b->v);
+    return;
+  }
+#endif
+
+#if defined(HRSS_HAVE_VECTOR_UNIT)
+  if (vec_capable()) {
+    poly_mul_vec(r, a, b);
+    return;
+  }
+#endif
+
+  // Fallback, non-vector case.
+  poly_mul_novec(r, a, b);
+}
+
+// poly_mul_x_minus_1 sets |p| to |p|×(𝑥 - 1) mod (𝑥^n - 1).
+static void poly_mul_x_minus_1(struct poly *p) {
+  // Multiplying by (𝑥 - 1) means negating each coefficient and adding in
+  // the value of the previous one.
+  const uint16_t orig_final_coefficient = p->v[N - 1];
+
+  for (size_t i = N - 1; i > 0; i--) {
+    p->v[i] = p->v[i - 1] - p->v[i];
+  }
+  p->v[0] = orig_final_coefficient - p->v[0];
+}
+
+// poly_mod_phiN sets |p| to |p| mod Φ(N).
+static void poly_mod_phiN(struct poly *p) {
+  const uint16_t coeff700 = p->v[N - 1];
+
+  for (unsigned i = 0; i < N; i++) {
+    p->v[i] -= coeff700;
+  }
+}
+
+// poly_clamp reduces each coefficient mod Q.
+static void poly_clamp(struct poly *p) {
+  for (unsigned i = 0; i < N; i++) {
+    p->v[i] &= Q - 1;
+  }
+}
+
+
+// Conversion functions
+// --------------------
+
+// poly2_from_poly sets |*out| to |in| mod 2.
+static void poly2_from_poly(struct poly2 *out, const struct poly *in) {
+  crypto_word_t *words = out->v;
+  unsigned shift = 0;
+  crypto_word_t word = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    word >>= 1;
+    word |= (crypto_word_t)(in->v[i] & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words = word;
+      words++;
+      word = 0;
+      shift = 0;
+    }
+  }
+
+  word >>= BITS_PER_WORD - shift;
+  *words = word;
+}
+
+// mod3 treats |a| as a signed number and returns |a| mod 3.
+static uint16_t mod3(int16_t a) {
+  const int16_t q = ((int32_t)a * 21845) >> 16;
+  int16_t ret = a - 3 * q;
+  // At this point, |ret| is in {0, 1, 2, 3} and that needs to be mapped to {0,
+  // 1, 2, 0}.
+  return ret & ((ret & (ret >> 1)) - 1);
+}
+
+// poly3_from_poly sets |*out| to |in|.
+static void poly3_from_poly(struct poly3 *out, const struct poly *in) {
+  crypto_word_t *words_s = out->s.v;
+  crypto_word_t *words_a = out->a.v;
+  crypto_word_t s = 0;
+  crypto_word_t a = 0;
+  unsigned shift = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    // This duplicates the 13th bit upwards to the top of the uint16,
+    // essentially treating it as a sign bit and converting into a signed int16.
+    // The signed value is reduced mod 3, yielding {0, 1, 2}.
+    const uint16_t v = mod3((int16_t)(in->v[i] << 3) >> 3);
+    s >>= 1;
+    const crypto_word_t s_bit = (crypto_word_t)(v & 2) << (BITS_PER_WORD - 2);
+    s |= s_bit;
+    a >>= 1;
+    a |= s_bit | (crypto_word_t)(v & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words_s = s;
+      words_s++;
+      *words_a = a;
+      words_a++;
+      s = a = 0;
+      shift = 0;
+    }
+  }
+
+  s >>= BITS_PER_WORD - shift;
+  a >>= BITS_PER_WORD - shift;
+  *words_s = s;
+  *words_a = a;
+}
+
+// poly3_from_poly_checked sets |*out| to |in|, which has coefficients in {0, 1,
+// Q-1}. It returns a mask indicating whether all coefficients were found to be
+// in that set.
+static crypto_word_t poly3_from_poly_checked(struct poly3 *out,
+                                             const struct poly *in) {
+  crypto_word_t *words_s = out->s.v;
+  crypto_word_t *words_a = out->a.v;
+  crypto_word_t s = 0;
+  crypto_word_t a = 0;
+  unsigned shift = 0;
+  crypto_word_t ok = CONSTTIME_TRUE_W;
+
+  for (unsigned i = 0; i < N; i++) {
+    const uint16_t v = in->v[i];
+    // Maps {0, 1, Q-1} to {0, 1, 2}.
+    uint16_t mod3 = v & 3;
+    mod3 ^= mod3 >> 1;
+    const uint16_t expected = (uint16_t)((~((mod3 >> 1) - 1)) | mod3) % Q;
+    ok &= constant_time_eq_w(v, expected);
+
+    s >>= 1;
+    const crypto_word_t s_bit = (crypto_word_t)(mod3 & 2)
+                                << (BITS_PER_WORD - 2);
+    s |= s_bit;
+    a >>= 1;
+    a |= s_bit | (crypto_word_t)(mod3 & 1) << (BITS_PER_WORD - 1);
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      *words_s = s;
+      words_s++;
+      *words_a = a;
+      words_a++;
+      s = a = 0;
+      shift = 0;
+    }
+  }
+
+  s >>= BITS_PER_WORD - shift;
+  a >>= BITS_PER_WORD - shift;
+  *words_s = s;
+  *words_a = a;
+
+  return ok;
+}
+
+static void poly_from_poly2(struct poly *out, const struct poly2 *in) {
+  const crypto_word_t *words = in->v;
+  unsigned shift = 0;
+  crypto_word_t word = *words;
+
+  for (unsigned i = 0; i < N; i++) {
+    out->v[i] = word & 1;
+    word >>= 1;
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      words++;
+      word = *words;
+      shift = 0;
+    }
+  }
+}
+
+static void poly_from_poly3(struct poly *out, const struct poly3 *in) {
+  const crypto_word_t *words_s = in->s.v;
+  const crypto_word_t *words_a = in->a.v;
+  crypto_word_t word_s = ~(*words_s);
+  crypto_word_t word_a = *words_a;
+  unsigned shift = 0;
+
+  for (unsigned i = 0; i < N; i++) {
+    out->v[i] = (uint16_t)(word_s & 1) - 1;
+    out->v[i] |= word_a & 1;
+    word_s >>= 1;
+    word_a >>= 1;
+    shift++;
+
+    if (shift == BITS_PER_WORD) {
+      words_s++;
+      words_a++;
+      word_s = ~(*words_s);
+      word_a = *words_a;
+      shift = 0;
+    }
+  }
+}
+
+// Polynomial inversion
+// --------------------
+
+// poly_invert_mod2 sets |*out| to |in^-1| (i.e. such that |*out|×|in| = 1 mod
+// Φ(N)), all mod 2. This isn't useful in itself, but is part of doing inversion
+// mod Q.
+static void poly_invert_mod2(struct poly *out, const struct poly *in) {
+  // This algorithm is taken from section 7.1 of [SAFEGCD].
+  struct poly2 v, r, f, g;
+
+  // v = 0
+  poly2_zero(&v);
+  // r = 1
+  poly2_zero(&r);
+  r.v[0] = 1;
+  // f = all ones.
+  OPENSSL_memset(&f, 0xff, sizeof(struct poly2));
+  f.v[WORDS_PER_POLY - 1] >>= BITS_PER_WORD - BITS_IN_LAST_WORD;
+  // g is the reversal of |in|.
+  poly2_from_poly(&g, in);
+  poly2_mod_phiN(&g);
+  poly2_reverse_700(&g, &g);
+  int delta = 1;
+
+  for (size_t i = 0; i < (2*(N-1)) - 1; i++) {
+    poly2_lshift1(&v);
+
+    const crypto_word_t delta_sign_bit = (delta >> (sizeof(delta) * 8 - 1)) & 1;
+    const crypto_word_t delta_is_non_negative = delta_sign_bit - 1;
+    const crypto_word_t delta_is_non_zero = ~constant_time_is_zero_w(delta);
+    const crypto_word_t g_has_constant_term = lsb_to_all(g.v[0]);
+    const crypto_word_t mask =
+        g_has_constant_term & delta_is_non_negative & delta_is_non_zero;
+
+    const crypto_word_t c = lsb_to_all(f.v[0] & g.v[0]);
+
+    delta = constant_time_select_int(mask, -delta, delta);
+    delta++;
+
+    poly2_cswap(&f, &g, mask);
+    poly2_fmadd(&g, &f, c);
+    poly2_rshift1(&g);
+
+    poly2_cswap(&v, &r, mask);
+    poly2_fmadd(&r, &v, c);
+  }
+
+  assert(delta == 0);
+  assert(f.v[0] & 1);
+  poly2_reverse_700(&v, &v);
+  poly_from_poly2(out, &v);
+}
+
+// poly_invert sets |*out| to |in^-1| (i.e. such that |*out|×|in| = 1 mod Φ(N)).
+static void poly_invert(struct poly *out, const struct poly *in) {
+  // Inversion mod Q, which is done based on the result of inverting mod
+  // 2. See [NTRUTN14] paper, bottom of page two.
+  struct poly a, *b, tmp;
+
+  // a = -in.
+  for (unsigned i = 0; i < N; i++) {
+    a.v[i] = -in->v[i];
+  }
+
+  // b = in^-1 mod 2.
+  b = out;
+  poly_invert_mod2(b, in);
+
+  // We are working mod Q=2**13 and we need to iterate ceil(log_2(13))
+  // times, which is four.
+  for (unsigned i = 0; i < 4; i++) {
+    poly_mul(&tmp, &a, b);
+    tmp.v[0] += 2;
+    poly_mul(b, b, &tmp);
+  }
+}
+
+// Marshal and unmarshal functions for various basic types.
+// --------------------------------------------------------
+
+#define POLY_BYTES 1138
+
+// poly_marshal serialises all but the final coefficient of |in| to |out|.
+static void poly_marshal(uint8_t out[POLY_BYTES], const struct poly *in) {
+  const uint16_t *p = in->v;
+
+  for (size_t i = 0; i < N / 8; i++) {
+    out[0] = p[0];
+    out[1] = (0x1f & (p[0] >> 8)) | ((p[1] & 0x07) << 5);
+    out[2] = p[1] >> 3;
+    out[3] = (3 & (p[1] >> 11)) | ((p[2] & 0x3f) << 2);
+    out[4] = (0x7f & (p[2] >> 6)) | ((p[3] & 0x01) << 7);
+    out[5] = p[3] >> 1;
+    out[6] = (0xf & (p[3] >> 9)) | ((p[4] & 0x0f) << 4);
+    out[7] = p[4] >> 4;
+    out[8] = (1 & (p[4] >> 12)) | ((p[5] & 0x7f) << 1);
+    out[9] = (0x3f & (p[5] >> 7)) | ((p[6] & 0x03) << 6);
+    out[10] = p[6] >> 2;
+    out[11] = (7 & (p[6] >> 10)) | ((p[7] & 0x1f) << 3);
+    out[12] = p[7] >> 5;
+
+    p += 8;
+    out += 13;
+  }
+
+  // There are four remaining values.
+  out[0] = p[0];
+  out[1] = (0x1f & (p[0] >> 8)) | ((p[1] & 0x07) << 5);
+  out[2] = p[1] >> 3;
+  out[3] = (3 & (p[1] >> 11)) | ((p[2] & 0x3f) << 2);
+  out[4] = (0x7f & (p[2] >> 6)) | ((p[3] & 0x01) << 7);
+  out[5] = p[3] >> 1;
+  out[6] = 0xf & (p[3] >> 9);
+}
+
+// poly_unmarshal parses the output of |poly_marshal| and sets |out| such that
+// all but the final coefficients match, and the final coefficient is calculated
+// such that evaluating |out| at one results in zero. It returns one on success
+// or zero if |in| is an invalid encoding.
+static int poly_unmarshal(struct poly *out, const uint8_t in[POLY_BYTES]) {
+  uint16_t *p = out->v;
+
+  for (size_t i = 0; i < N / 8; i++) {
+    p[0] = (uint16_t)(in[0]) | (uint16_t)(in[1] & 0x1f) << 8;
+    p[1] = (uint16_t)(in[1] >> 5) | (uint16_t)(in[2]) << 3 |
+           (uint16_t)(in[3] & 3) << 11;
+    p[2] = (uint16_t)(in[3] >> 2) | (uint16_t)(in[4] & 0x7f) << 6;
+    p[3] = (uint16_t)(in[4] >> 7) | (uint16_t)(in[5]) << 1 |
+           (uint16_t)(in[6] & 0xf) << 9;
+    p[4] = (uint16_t)(in[6] >> 4) | (uint16_t)(in[7]) << 4 |
+           (uint16_t)(in[8] & 1) << 12;
+    p[5] = (uint16_t)(in[8] >> 1) | (uint16_t)(in[9] & 0x3f) << 7;
+    p[6] = (uint16_t)(in[9] >> 6) | (uint16_t)(in[10]) << 2 |
+           (uint16_t)(in[11] & 7) << 10;
+    p[7] = (uint16_t)(in[11] >> 3) | (uint16_t)(in[12]) << 5;
+
+    p += 8;
+    in += 13;
+  }
+
+  // There are four coefficients remaining.
+  p[0] = (uint16_t)(in[0]) | (uint16_t)(in[1] & 0x1f) << 8;
+  p[1] = (uint16_t)(in[1] >> 5) | (uint16_t)(in[2]) << 3 |
+         (uint16_t)(in[3] & 3) << 11;
+  p[2] = (uint16_t)(in[3] >> 2) | (uint16_t)(in[4] & 0x7f) << 6;
+  p[3] = (uint16_t)(in[4] >> 7) | (uint16_t)(in[5]) << 1 |
+         (uint16_t)(in[6] & 0xf) << 9;
+
+  for (unsigned i = 0; i < N - 1; i++) {
+    out->v[i] = (int16_t)(out->v[i] << 3) >> 3;
+  }
+
+  // There are four unused bits in the last byte. We require them to be zero.
+  if ((in[6] & 0xf0) != 0) {
+    return 0;
+  }
+
+  // Set the final coefficient as specifed in [HRSSNIST] 1.9.2 step 6.
+  uint32_t sum = 0;
+  for (size_t i = 0; i < N - 1; i++) {
+    sum += out->v[i];
+  }
+
+  out->v[N - 1] = (uint16_t)(0u - sum);
+
+  return 1;
+}
+
+// mod3_from_modQ maps {0, 1, Q-1, 65535} -> {0, 1, 2, 2}. Note that |v| may
+// have an invalid value when processing attacker-controlled inputs.
+static uint16_t mod3_from_modQ(uint16_t v) {
+  v &= 3;
+  return v ^ (v >> 1);
+}
+
+// poly_marshal_mod3 marshals |in| to |out| where the coefficients of |in| are
+// all in {0, 1, Q-1, 65535} and |in| is mod Φ(N). (Note that coefficients may
+// have invalid values when processing attacker-controlled inputs.)
+static void poly_marshal_mod3(uint8_t out[HRSS_POLY3_BYTES],
+                              const struct poly *in) {
+  const uint16_t *coeffs = in->v;
+
+  // Only 700 coefficients are marshaled because in[700] must be zero.
+  assert(coeffs[N-1] == 0);
+
+  for (size_t i = 0; i < HRSS_POLY3_BYTES; i++) {
+    const uint16_t coeffs0 = mod3_from_modQ(coeffs[0]);
+    const uint16_t coeffs1 = mod3_from_modQ(coeffs[1]);
+    const uint16_t coeffs2 = mod3_from_modQ(coeffs[2]);
+    const uint16_t coeffs3 = mod3_from_modQ(coeffs[3]);
+    const uint16_t coeffs4 = mod3_from_modQ(coeffs[4]);
+    out[i] = coeffs0 + coeffs1 * 3 + coeffs2 * 9 + coeffs3 * 27 + coeffs4 * 81;
+    coeffs += 5;
+  }
+}
+
+// HRSS-specific functions
+// -----------------------
+
+// poly_short_sample samples a vector of values in {0xffff (i.e. -1), 0, 1}.
+// This is the same action as the algorithm in [HRSSNIST] section 1.8.1, but
+// with HRSS-SXY the sampling algorithm is now a private detail of the
+// implementation (previously it had to match between two parties). This
+// function uses that freedom to implement a flatter distribution of values.
+static void poly_short_sample(struct poly *out,
+                              const uint8_t in[HRSS_SAMPLE_BYTES]) {
+  OPENSSL_STATIC_ASSERT(HRSS_SAMPLE_BYTES == N - 1,
+                        "HRSS_SAMPLE_BYTES incorrect");
+  for (size_t i = 0; i < N - 1; i++) {
+    uint16_t v = mod3(in[i]);
+    // Map {0, 1, 2} -> {0, 1, 0xffff}
+    v |= ((v >> 1) ^ 1) - 1;
+    out->v[i] = v;
+  }
+  out->v[N - 1] = 0;
+}
+
+// poly_short_sample_plus performs the T+ sample as defined in [HRSSNIST],
+// section 1.8.2.
+static void poly_short_sample_plus(struct poly *out,
+                                   const uint8_t in[HRSS_SAMPLE_BYTES]) {
+  poly_short_sample(out, in);
+
+  // sum (and the product in the for loop) will overflow. But that's fine
+  // because |sum| is bound by +/- (N-2), and N < 2^15 so it works out.
+  uint16_t sum = 0;
+  for (unsigned i = 0; i < N - 2; i++) {
+    sum += (unsigned) out->v[i] * out->v[i + 1];
+  }
+
+  // If the sum is negative, flip the sign of even-positioned coefficients. (See
+  // page 8 of [HRSS].)
+  sum = ((int16_t) sum) >> 15;
+  const uint16_t scale = sum | (~sum & 1);
+  for (unsigned i = 0; i < N; i += 2) {
+    out->v[i] = (unsigned) out->v[i] * scale;
+  }
+}
+
+// poly_lift computes the function discussed in [HRSS], appendix B.
+static void poly_lift(struct poly *out, const struct poly *a) {
+  // We wish to calculate a/(𝑥-1) mod Φ(N) over GF(3), where Φ(N) is the
+  // Nth cyclotomic polynomial, i.e. 1 + 𝑥 + … + 𝑥^700 (since N is prime).
+
+  // 1/(𝑥-1) has a fairly basic structure that we can exploit to speed this up:
+  //
+  // R.<x> = PolynomialRing(GF(3)…)
+  // inv = R.cyclotomic_polynomial(1).inverse_mod(R.cyclotomic_polynomial(n))
+  // list(inv)[:15]
+  //   [1, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 2]
+  //
+  // This three-element pattern of coefficients repeats for the whole
+  // polynomial.
+  //
+  // Next define the overbar operator such that z̅ = z[0] +
+  // reverse(z[1:]). (Index zero of a polynomial here is the coefficient
+  // of the constant term. So index one is the coefficient of 𝑥 and so
+  // on.)
+  //
+  // A less odd way to define this is to see that z̅ negates the indexes,
+  // so z̅[0] = z[-0], z̅[1] = z[-1] and so on.
+  //
+  // The use of z̅ is that, when working mod (𝑥^701 - 1), vz[0] = <v,
+  // z̅>, vz[1] = <v, 𝑥z̅>, …. (Where <a, b> is the inner product: the sum
+  // of the point-wise products.) Although we calculated the inverse mod
+  // Φ(N), we can work mod (𝑥^N - 1) and reduce mod Φ(N) at the end.
+  // (That's because (𝑥^N - 1) is a multiple of Φ(N).)
+  //
+  // When working mod (𝑥^N - 1), multiplication by 𝑥 is a right-rotation
+  // of the list of coefficients.
+  //
+  // Thus we can consider what the pattern of z̅, 𝑥z̅, 𝑥^2z̅, … looks like:
+  //
+  // def reverse(xs):
+  //   suffix = list(xs[1:])
+  //   suffix.reverse()
+  //   return [xs[0]] + suffix
+  //
+  // def rotate(xs):
+  //   return [xs[-1]] + xs[:-1]
+  //
+  // zoverbar = reverse(list(inv) + [0])
+  // xzoverbar = rotate(reverse(list(inv) + [0]))
+  // x2zoverbar = rotate(rotate(reverse(list(inv) + [0])))
+  //
+  // zoverbar[:15]
+  //   [1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1]
+  // xzoverbar[:15]
+  //   [0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0]
+  // x2zoverbar[:15]
+  //   [2, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2]
+  //
+  // (For a formula for z̅, see lemma two of appendix B.)
+  //
+  // After the first three elements have been taken care of, all then have
+  // a repeating three-element cycle. The next value (𝑥^3z̅) involves
+  // three rotations of the first pattern, thus the three-element cycle
+  // lines up. However, the discontinuity in the first three elements
+  // obviously moves to a different position. Consider the difference
+  // between 𝑥^3z̅ and z̅:
+  //
+  // [x-y for (x,y) in zip(zoverbar, x3zoverbar)][:15]
+  //    [0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+  //
+  // This pattern of differences is the same for all elements, although it
+  // obviously moves right with the rotations.
+  //
+  // From this, we reach algorithm eight of appendix B.
+
+  // Handle the first three elements of the inner products.
+  out->v[0] = a->v[0] + a->v[2];
+  out->v[1] = a->v[1];
+  out->v[2] = -a->v[0] + a->v[2];
+
+  // s0, s1, s2 are added into out->v[0], out->v[1], and out->v[2],
+  // respectively. We do not compute s1 because it's just -(s0 + s1).
+  uint16_t s0 = 0, s2 = 0;
+  for (size_t i = 3; i < 699; i += 3) {
+    s0 += -a->v[i] + a->v[i + 2];
+    // s1 += a->v[i] - a->v[i + 1];
+    s2 += a->v[i + 1] - a->v[i + 2];
+  }
+
+  // Handle the fact that the three-element pattern doesn't fill the
+  // polynomial exactly (since 701 isn't a multiple of three).
+  s0 -= a->v[699];
+  // s1 += a->v[699] - a->v[700];
+  s2 += a->v[700];
+
+  // Note that s0 + s1 + s2 = 0.
+  out->v[0] += s0;
+  out->v[1] -= (s0 + s2); // = s1
+  out->v[2] += s2;
+
+  // Calculate the remaining inner products by taking advantage of the
+  // fact that the pattern repeats every three cycles and the pattern of
+  // differences moves with the rotation.
+  for (size_t i = 3; i < N; i++) {
+    out->v[i] = (out->v[i - 3] - (a->v[i - 2] + a->v[i - 1] + a->v[i]));
+  }
+
+  // Reduce mod Φ(N) by subtracting a multiple of out[700] from every
+  // element and convert to mod Q. (See above about adding twice as
+  // subtraction.)
+  const crypto_word_t v = out->v[700];
+  for (unsigned i = 0; i < N; i++) {
+    const uint16_t vi_mod3 = mod3(out->v[i] - v);
+    // Map {0, 1, 2} to {0, 1, 0xffff}.
+    out->v[i] = (~((vi_mod3 >> 1) - 1)) | vi_mod3;
+  }
+
+  poly_mul_x_minus_1(out);
+}
+
+struct public_key {
+  struct poly ph;
+};
+
+struct private_key {
+  struct poly3 f, f_inverse;
+  struct poly ph_inverse;
+  uint8_t hmac_key[32];
+};
+
+// public_key_from_external converts an external public key pointer into an
+// internal one. Externally the alignment is only specified to be eight bytes
+// but we need 16-byte alignment. We could annotate the external struct with
+// that alignment but we can only assume that malloced pointers are 8-byte
+// aligned in any case. (Even if the underlying malloc returns values with
+// 16-byte alignment, |OPENSSL_malloc| will store an 8-byte size prefix and mess
+// that up.)
+static struct public_key *public_key_from_external(
+    struct HRSS_public_key *ext) {
+  OPENSSL_STATIC_ASSERT(
+      sizeof(struct HRSS_public_key) >= sizeof(struct public_key) + 15,
+      "HRSS public key too small");
+
+  uintptr_t p = (uintptr_t)ext;
+  p = (p + 15) & ~15;
+  return (struct public_key *)p;
+}
+
+// private_key_from_external does the same thing as |public_key_from_external|,
+// but for private keys. See the comment on that function about alignment
+// issues.
+static struct private_key *private_key_from_external(
+    struct HRSS_private_key *ext) {
+  OPENSSL_STATIC_ASSERT(
+      sizeof(struct HRSS_private_key) >= sizeof(struct private_key) + 15,
+      "HRSS private key too small");
+
+  uintptr_t p = (uintptr_t)ext;
+  p = (p + 15) & ~15;
+  return (struct private_key *)p;
+}
+
+void HRSS_generate_key(
+    struct HRSS_public_key *out_pub, struct HRSS_private_key *out_priv,
+    const uint8_t in[HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES + 32]) {
+  struct public_key *pub = public_key_from_external(out_pub);
+  struct private_key *priv = private_key_from_external(out_priv);
+
+  OPENSSL_memcpy(priv->hmac_key, in + 2 * HRSS_SAMPLE_BYTES,
+                 sizeof(priv->hmac_key));
+
+  struct poly f;
+  poly_short_sample_plus(&f, in);
+  poly3_from_poly(&priv->f, &f);
+  HRSS_poly3_invert(&priv->f_inverse, &priv->f);
+
+  // pg_phi1 is p (i.e. 3) × g × Φ(1) (i.e. 𝑥-1).
+  struct poly pg_phi1;
+  poly_short_sample_plus(&pg_phi1, in + HRSS_SAMPLE_BYTES);
+  for (unsigned i = 0; i < N; i++) {
+    pg_phi1.v[i] *= 3;
+  }
+  poly_mul_x_minus_1(&pg_phi1);
+
+  struct poly pfg_phi1;
+  poly_mul(&pfg_phi1, &f, &pg_phi1);
+
+  struct poly pfg_phi1_inverse;
+  poly_invert(&pfg_phi1_inverse, &pfg_phi1);
+
+  poly_mul(&pub->ph, &pfg_phi1_inverse, &pg_phi1);
+  poly_mul(&pub->ph, &pub->ph, &pg_phi1);
+  poly_clamp(&pub->ph);
+
+  poly_mul(&priv->ph_inverse, &pfg_phi1_inverse, &f);
+  poly_mul(&priv->ph_inverse, &priv->ph_inverse, &f);
+  poly_clamp(&priv->ph_inverse);
+}
+
+static const char kSharedKey[] = "shared key";
+
+void HRSS_encap(uint8_t out_ciphertext[POLY_BYTES],
+                uint8_t out_shared_key[32],
+                const struct HRSS_public_key *in_pub,
+                const uint8_t in[HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES]) {
+  const struct public_key *pub =
+      public_key_from_external((struct HRSS_public_key *)in_pub);
+  struct poly m, r, m_lifted;
+  poly_short_sample(&m, in);
+  poly_short_sample(&r, in + HRSS_SAMPLE_BYTES);
+  poly_lift(&m_lifted, &m);
+
+  struct poly prh_plus_m;
+  poly_mul(&prh_plus_m, &r, &pub->ph);
+  for (unsigned i = 0; i < N; i++) {
+    prh_plus_m.v[i] += m_lifted.v[i];
+  }
+
+  poly_marshal(out_ciphertext, &prh_plus_m);
+
+  uint8_t m_bytes[HRSS_POLY3_BYTES], r_bytes[HRSS_POLY3_BYTES];
+  poly_marshal_mod3(m_bytes, &m);
+  poly_marshal_mod3(r_bytes, &r);
+
+  SHA256_CTX hash_ctx;
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, kSharedKey, sizeof(kSharedKey));
+  SHA256_Update(&hash_ctx, m_bytes, sizeof(m_bytes));
+  SHA256_Update(&hash_ctx, r_bytes, sizeof(r_bytes));
+  SHA256_Update(&hash_ctx, out_ciphertext, POLY_BYTES);
+  SHA256_Final(out_shared_key, &hash_ctx);
+}
+
+void HRSS_decap(uint8_t out_shared_key[HRSS_KEY_BYTES],
+                const struct HRSS_private_key *in_priv,
+                const uint8_t *ciphertext, size_t ciphertext_len) {
+  const struct private_key *priv =
+      private_key_from_external((struct HRSS_private_key *)in_priv);
+
+  // This is HMAC, expanded inline rather than using the |HMAC| function so that
+  // we can avoid dealing with possible allocation failures and so keep this
+  // function infallible.
+  uint8_t masked_key[SHA256_CBLOCK];
+  OPENSSL_STATIC_ASSERT(sizeof(priv->hmac_key) <= sizeof(masked_key),
+                        "HRSS HMAC key larger than SHA-256 block size");
+  for (size_t i = 0; i < sizeof(priv->hmac_key); i++) {
+    masked_key[i] = priv->hmac_key[i] ^ 0x36;
+  }
+  OPENSSL_memset(masked_key + sizeof(priv->hmac_key), 0x36,
+                 sizeof(masked_key) - sizeof(priv->hmac_key));
+
+  SHA256_CTX hash_ctx;
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, masked_key, sizeof(masked_key));
+  SHA256_Update(&hash_ctx, ciphertext, ciphertext_len);
+  uint8_t inner_digest[SHA256_DIGEST_LENGTH];
+  SHA256_Final(inner_digest, &hash_ctx);
+
+  for (size_t i = 0; i < sizeof(priv->hmac_key); i++) {
+    masked_key[i] ^= (0x5c ^ 0x36);
+  }
+  OPENSSL_memset(masked_key + sizeof(priv->hmac_key), 0x5c,
+                 sizeof(masked_key) - sizeof(priv->hmac_key));
+
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, masked_key, sizeof(masked_key));
+  SHA256_Update(&hash_ctx, inner_digest, sizeof(inner_digest));
+  OPENSSL_STATIC_ASSERT(HRSS_KEY_BYTES == SHA256_DIGEST_LENGTH,
+                        "HRSS shared key length incorrect");
+  SHA256_Final(out_shared_key, &hash_ctx);
+
+  struct poly c;
+  // If the ciphertext is publicly invalid then a random shared key is still
+  // returned to simply the logic of the caller, but this path is not constant
+  // time.
+  if (ciphertext_len != HRSS_CIPHERTEXT_BYTES ||
+      !poly_unmarshal(&c, ciphertext)) {
+    return;
+  }
+
+  struct poly f, cf;
+  struct poly3 cf3, m3;
+  poly_from_poly3(&f, &priv->f);
+  poly_mul(&cf, &c, &f);
+  poly3_from_poly(&cf3, &cf);
+  // Note that cf3 is not reduced mod Φ(N). That reduction is deferred.
+  HRSS_poly3_mul(&m3, &cf3, &priv->f_inverse);
+
+  struct poly m, m_lifted;
+  poly_from_poly3(&m, &m3);
+  poly_lift(&m_lifted, &m);
+
+  struct poly r;
+  for (unsigned i = 0; i < N; i++) {
+    r.v[i] = c.v[i] - m_lifted.v[i];
+  }
+  poly_mul(&r, &r, &priv->ph_inverse);
+  poly_mod_phiN(&r);
+  poly_clamp(&r);
+
+  struct poly3 r3;
+  crypto_word_t ok = poly3_from_poly_checked(&r3, &r);
+
+  // [NTRUCOMP] section 5.1 includes ReEnc2 and a proof that it's valid. Rather
+  // than do an expensive |poly_mul|, it rebuilds |c'| from |c - lift(m)|
+  // (called |b|) with:
+  //   t = (−b(1)/N) mod Q
+  //   c' = b + tΦ(N) + lift(m) mod Q
+  //
+  // When polynomials are transmitted, the final coefficient is omitted and
+  // |poly_unmarshal| sets it such that f(1) == 0. Thus c(1) == 0. Also,
+  // |poly_lift| multiplies the result by (x-1) and therefore evaluating a
+  // lifted polynomial at 1 is also zero. Thus lift(m)(1) == 0 and so
+  // (c - lift(m))(1) == 0.
+  //
+  // Although we defer the reduction above, |b| is conceptually reduced mod
+  // Φ(N). In order to do that reduction one subtracts |c[N-1]| from every
+  // coefficient. Therefore b(1) = -c[N-1]×N. The value of |t|, above, then is
+  // just recovering |c[N-1]|, and adding tΦ(N) is simply undoing the reduction.
+  // Therefore b + tΦ(N) + lift(m) = c by construction and we don't need to
+  // recover |c| at all so long as we do the checks in
+  // |poly3_from_poly_checked|.
+  //
+  // The |poly_marshal| here then is just confirming that |poly_unmarshal| is
+  // strict and could be omitted.
+
+  uint8_t expected_ciphertext[HRSS_CIPHERTEXT_BYTES];
+  OPENSSL_STATIC_ASSERT(HRSS_CIPHERTEXT_BYTES == POLY_BYTES,
+                        "ciphertext is the wrong size");
+  assert(ciphertext_len == sizeof(expected_ciphertext));
+  poly_marshal(expected_ciphertext, &c);
+
+  uint8_t m_bytes[HRSS_POLY3_BYTES];
+  uint8_t r_bytes[HRSS_POLY3_BYTES];
+  poly_marshal_mod3(m_bytes, &m);
+  poly_marshal_mod3(r_bytes, &r);
+
+  ok &= constant_time_is_zero_w(CRYPTO_memcmp(ciphertext, expected_ciphertext,
+                                              sizeof(expected_ciphertext)));
+
+  uint8_t shared_key[32];
+  SHA256_Init(&hash_ctx);
+  SHA256_Update(&hash_ctx, kSharedKey, sizeof(kSharedKey));
+  SHA256_Update(&hash_ctx, m_bytes, sizeof(m_bytes));
+  SHA256_Update(&hash_ctx, r_bytes, sizeof(r_bytes));
+  SHA256_Update(&hash_ctx, expected_ciphertext, sizeof(expected_ciphertext));
+  SHA256_Final(shared_key, &hash_ctx);
+
+  for (unsigned i = 0; i < sizeof(shared_key); i++) {
+    out_shared_key[i] =
+        constant_time_select_8(ok, shared_key[i], out_shared_key[i]);
+  }
+}
+
+void HRSS_marshal_public_key(uint8_t out[HRSS_PUBLIC_KEY_BYTES],
+                             const struct HRSS_public_key *in_pub) {
+  const struct public_key *pub =
+      public_key_from_external((struct HRSS_public_key *)in_pub);
+  poly_marshal(out, &pub->ph);
+}
+
+int HRSS_parse_public_key(struct HRSS_public_key *out,
+                          const uint8_t in[HRSS_PUBLIC_KEY_BYTES]) {
+  struct public_key *pub = public_key_from_external(out);
+  if (!poly_unmarshal(&pub->ph, in)) {
+    return 0;
+  }
+  OPENSSL_memset(&pub->ph.v[N], 0, 3 * sizeof(uint16_t));
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h
new file mode 100644
index 0000000..26762ce
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h	
@@ -0,0 +1,61 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HRSS_INTERNAL_H
+#define OPENSSL_HEADER_HRSS_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+#include "../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#define N 701
+#define BITS_PER_WORD (sizeof(crypto_word_t) * 8)
+#define WORDS_PER_POLY ((N + BITS_PER_WORD - 1) / BITS_PER_WORD)
+#define BITS_IN_LAST_WORD (N % BITS_PER_WORD)
+
+struct poly2 {
+  crypto_word_t v[WORDS_PER_POLY];
+};
+
+struct poly3 {
+  struct poly2 s, a;
+};
+
+OPENSSL_EXPORT void HRSS_poly3_mul(struct poly3 *out, const struct poly3 *x,
+                                   const struct poly3 *y);
+OPENSSL_EXPORT void HRSS_poly3_invert(struct poly3 *out,
+                                      const struct poly3 *in);
+
+// On x86-64, we can use the AVX2 code from [HRSS]. (The authors have given
+// explicit permission for this and signed a CLA.) However it's 57KB of object
+// code, so it's not used if |OPENSSL_SMALL| is defined.
+#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_SMALL) && \
+    defined(OPENSSL_X86_64) && defined(OPENSSL_LINUX)
+#define POLY_RQ_MUL_ASM
+// poly_Rq_mul is defined in assembly. Inputs and outputs must be 16-byte-
+// aligned.
+extern void poly_Rq_mul(uint16_t r[N + 3], const uint16_t a[N + 3],
+                        const uint16_t b[N + 3]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // !OPENSSL_HEADER_HRSS_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h.grpc_back
new file mode 100644
index 0000000..c0d9bd2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/hrss/internal.h.grpc_back	
@@ -0,0 +1,61 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HRSS_INTERNAL_H
+#define OPENSSL_HEADER_HRSS_INTERNAL_H
+
+#include <openssl/base.h>
+#include "../internal.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#define N 701
+#define BITS_PER_WORD (sizeof(crypto_word_t) * 8)
+#define WORDS_PER_POLY ((N + BITS_PER_WORD - 1) / BITS_PER_WORD)
+#define BITS_IN_LAST_WORD (N % BITS_PER_WORD)
+
+struct poly2 {
+  crypto_word_t v[WORDS_PER_POLY];
+};
+
+struct poly3 {
+  struct poly2 s, a;
+};
+
+OPENSSL_EXPORT void HRSS_poly3_mul(struct poly3 *out, const struct poly3 *x,
+                                   const struct poly3 *y);
+OPENSSL_EXPORT void HRSS_poly3_invert(struct poly3 *out,
+                                      const struct poly3 *in);
+
+// On x86-64, we can use the AVX2 code from [HRSS]. (The authors have given
+// explicit permission for this and signed a CLA.) However it's 57KB of object
+// code, so it's not used if |OPENSSL_SMALL| is defined.
+#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_SMALL) && \
+    defined(OPENSSL_X86_64) && defined(OPENSSL_LINUX)
+#define POLY_RQ_MUL_ASM
+// poly_Rq_mul is defined in assembly. Inputs and outputs must be 16-byte-
+// aligned.
+extern void poly_Rq_mul(uint16_t r[N + 3], const uint16_t a[N + 3],
+                        const uint16_t b[N + 3]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // !OPENSSL_HEADER_HRSS_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h
new file mode 100644
index 0000000..4035328
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h	
@@ -0,0 +1,834 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CRYPTO_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_INTERNAL_H
+
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+
+#include <assert.h>
+#include <string.h>
+
+#if defined(BORINGSSL_CONSTANT_TIME_VALIDATION)
+#include <valgrind/memcheck.h>
+#endif
+
+#if !defined(__cplusplus)
+#if defined(_MSC_VER)
+#define alignas(x) __declspec(align(x))
+#define alignof __alignof
+#else
+#include <stdalign.h>
+#endif
+#endif
+
+#if defined(OPENSSL_THREADS) && \
+    (!defined(OPENSSL_WINDOWS) || defined(__MINGW32__))
+#include <pthread.h>
+#define OPENSSL_PTHREADS
+#endif
+
+#if defined(OPENSSL_THREADS) && !defined(OPENSSL_PTHREADS) && \
+    defined(OPENSSL_WINDOWS)
+#define OPENSSL_WINDOWS_THREADS
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || defined(OPENSSL_ARM) || \
+    defined(OPENSSL_AARCH64) || defined(OPENSSL_PPC64LE)
+// OPENSSL_cpuid_setup initializes the platform-specific feature cache.
+void OPENSSL_cpuid_setup(void);
+#endif
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+// OPENSSL_get_armcap_pointer_for_test returns a pointer to |OPENSSL_armcap_P|
+// for unit tests. Any modifications to the value must be made after
+// |CRYPTO_library_init| but before any other function call in BoringSSL.
+OPENSSL_EXPORT uint32_t *OPENSSL_get_armcap_pointer_for_test(void);
+#endif
+
+
+#if (!defined(_MSC_VER) || defined(__clang__)) && defined(OPENSSL_64_BIT)
+#define BORINGSSL_HAS_UINT128
+typedef __int128_t int128_t;
+typedef __uint128_t uint128_t;
+
+// clang-cl supports __uint128_t but modulus and division don't work.
+// https://crbug.com/787617.
+#if !defined(_MSC_VER) || !defined(__clang__)
+#define BORINGSSL_CAN_DIVIDE_UINT128
+#endif
+#endif
+
+#define OPENSSL_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
+
+// Have a generic fall-through for different versions of C/C++.
+#if defined(__cplusplus) && __cplusplus >= 201703L
+#define OPENSSL_FALLTHROUGH [[fallthrough]]
+#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__clang__)
+#define OPENSSL_FALLTHROUGH [[clang::fallthrough]]
+#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__GNUC__) && \
+    __GNUC__ >= 7
+#define OPENSSL_FALLTHROUGH [[gnu::fallthrough]]
+#elif defined(__GNUC__) && __GNUC__ >= 7 // gcc 7
+#define OPENSSL_FALLTHROUGH __attribute__ ((fallthrough))
+#elif defined(__clang__)
+#if __has_attribute(fallthrough) && __clang_major__ >= 5
+// Clang 3.5, at least, complains about "error: declaration does not declare
+// anything", possibily because we put a semicolon after this macro in
+// practice. Thus limit it to >= Clang 5, which does work.
+#define OPENSSL_FALLTHROUGH __attribute__ ((fallthrough))
+#else // clang versions that do not support fallthrough.
+#define OPENSSL_FALLTHROUGH
+#endif
+#else // C++11 on gcc 6, and all other cases
+#define OPENSSL_FALLTHROUGH
+#endif
+
+// For convenience in testing 64-bit generic code, we allow disabling SSE2
+// intrinsics via |OPENSSL_NO_SSE2_FOR_TESTING|. x86_64 always has SSE2
+// available, so we would otherwise need to test such code on a non-x86_64
+// platform.
+#if defined(__SSE2__) && !defined(OPENSSL_NO_SSE2_FOR_TESTING)
+#define OPENSSL_SSE2
+#endif
+
+// buffers_alias returns one if |a| and |b| alias and zero otherwise.
+static inline int buffers_alias(const uint8_t *a, size_t a_len,
+                                const uint8_t *b, size_t b_len) {
+  // Cast |a| and |b| to integers. In C, pointer comparisons between unrelated
+  // objects are undefined whereas pointer to integer conversions are merely
+  // implementation-defined. We assume the implementation defined it in a sane
+  // way.
+  uintptr_t a_u = (uintptr_t)a;
+  uintptr_t b_u = (uintptr_t)b;
+  return a_u + a_len > b_u && b_u + b_len > a_u;
+}
+
+
+// Constant-time utility functions.
+//
+// The following methods return a bitmask of all ones (0xff...f) for true and 0
+// for false. This is useful for choosing a value based on the result of a
+// conditional in constant time. For example,
+//
+// if (a < b) {
+//   c = a;
+// } else {
+//   c = b;
+// }
+//
+// can be written as
+//
+// crypto_word_t lt = constant_time_lt_w(a, b);
+// c = constant_time_select_w(lt, a, b);
+
+// crypto_word_t is the type that most constant-time functions use. Ideally we
+// would like it to be |size_t|, but NaCl builds in 64-bit mode with 32-bit
+// pointers, which means that |size_t| can be 32 bits when |BN_ULONG| is 64
+// bits. Since we want to be able to do constant-time operations on a
+// |BN_ULONG|, |crypto_word_t| is defined as an unsigned value with the native
+// word length.
+#if defined(OPENSSL_64_BIT)
+typedef uint64_t crypto_word_t;
+#elif defined(OPENSSL_32_BIT)
+typedef uint32_t crypto_word_t;
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+#define CONSTTIME_TRUE_W ~((crypto_word_t)0)
+#define CONSTTIME_FALSE_W ((crypto_word_t)0)
+#define CONSTTIME_TRUE_8 ((uint8_t)0xff)
+#define CONSTTIME_FALSE_8 ((uint8_t)0)
+
+// value_barrier_w returns |a|, but prevents GCC and Clang from reasoning about
+// the returned value. This is used to mitigate compilers undoing constant-time
+// code, until we can express our requirements directly in the language.
+//
+// Note the compiler is aware that |value_barrier_w| has no side effects and
+// always has the same output for a given input. This allows it to eliminate
+// dead code, move computations across loops, and vectorize.
+static inline crypto_word_t value_barrier_w(crypto_word_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// value_barrier_u32 behaves like |value_barrier_w| but takes a |uint32_t|.
+static inline uint32_t value_barrier_u32(uint32_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// value_barrier_u64 behaves like |value_barrier_w| but takes a |uint64_t|.
+static inline uint64_t value_barrier_u64(uint64_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// constant_time_msb_w returns the given value with the MSB copied to all the
+// other bits.
+static inline crypto_word_t constant_time_msb_w(crypto_word_t a) {
+  return 0u - (a >> (sizeof(a) * 8 - 1));
+}
+
+// constant_time_lt_w returns 0xff..f if a < b and 0 otherwise.
+static inline crypto_word_t constant_time_lt_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  // Consider the two cases of the problem:
+  //   msb(a) == msb(b): a < b iff the MSB of a - b is set.
+  //   msb(a) != msb(b): a < b iff the MSB of b is set.
+  //
+  // If msb(a) == msb(b) then the following evaluates as:
+  //   msb(a^((a^b)|((a-b)^a))) ==
+  //   msb(a^((a-b) ^ a))       ==   (because msb(a^b) == 0)
+  //   msb(a^a^(a-b))           ==   (rearranging)
+  //   msb(a-b)                      (because ∀x. x^x == 0)
+  //
+  // Else, if msb(a) != msb(b) then the following evaluates as:
+  //   msb(a^((a^b)|((a-b)^a))) ==
+  //   msb(a^(𝟙 | ((a-b)^a)))   ==   (because msb(a^b) == 1 and 𝟙
+  //                                  represents a value s.t. msb(𝟙) = 1)
+  //   msb(a^𝟙)                 ==   (because ORing with 1 results in 1)
+  //   msb(b)
+  //
+  //
+  // Here is an SMT-LIB verification of this formula:
+  //
+  // (define-fun lt ((a (_ BitVec 32)) (b (_ BitVec 32))) (_ BitVec 32)
+  //   (bvxor a (bvor (bvxor a b) (bvxor (bvsub a b) a)))
+  // )
+  //
+  // (declare-fun a () (_ BitVec 32))
+  // (declare-fun b () (_ BitVec 32))
+  //
+  // (assert (not (= (= #x00000001 (bvlshr (lt a b) #x0000001f)) (bvult a b))))
+  // (check-sat)
+  // (get-model)
+  return constant_time_msb_w(a^((a^b)|((a-b)^a)));
+}
+
+// constant_time_lt_8 acts like |constant_time_lt_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_lt_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_lt_w(a, b));
+}
+
+// constant_time_ge_w returns 0xff..f if a >= b and 0 otherwise.
+static inline crypto_word_t constant_time_ge_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  return ~constant_time_lt_w(a, b);
+}
+
+// constant_time_ge_8 acts like |constant_time_ge_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_ge_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_ge_w(a, b));
+}
+
+// constant_time_is_zero returns 0xff..f if a == 0 and 0 otherwise.
+static inline crypto_word_t constant_time_is_zero_w(crypto_word_t a) {
+  // Here is an SMT-LIB verification of this formula:
+  //
+  // (define-fun is_zero ((a (_ BitVec 32))) (_ BitVec 32)
+  //   (bvand (bvnot a) (bvsub a #x00000001))
+  // )
+  //
+  // (declare-fun a () (_ BitVec 32))
+  //
+  // (assert (not (= (= #x00000001 (bvlshr (is_zero a) #x0000001f)) (= a #x00000000))))
+  // (check-sat)
+  // (get-model)
+  return constant_time_msb_w(~a & (a - 1));
+}
+
+// constant_time_is_zero_8 acts like |constant_time_is_zero_w| but returns an
+// 8-bit mask.
+static inline uint8_t constant_time_is_zero_8(crypto_word_t a) {
+  return (uint8_t)(constant_time_is_zero_w(a));
+}
+
+// constant_time_eq_w returns 0xff..f if a == b and 0 otherwise.
+static inline crypto_word_t constant_time_eq_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  return constant_time_is_zero_w(a ^ b);
+}
+
+// constant_time_eq_8 acts like |constant_time_eq_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_eq_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_eq_w(a, b));
+}
+
+// constant_time_eq_int acts like |constant_time_eq_w| but works on int
+// values.
+static inline crypto_word_t constant_time_eq_int(int a, int b) {
+  return constant_time_eq_w((crypto_word_t)(a), (crypto_word_t)(b));
+}
+
+// constant_time_eq_int_8 acts like |constant_time_eq_int| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_eq_int_8(int a, int b) {
+  return constant_time_eq_8((crypto_word_t)(a), (crypto_word_t)(b));
+}
+
+// constant_time_select_w returns (mask & a) | (~mask & b). When |mask| is all
+// 1s or all 0s (as returned by the methods above), the select methods return
+// either |a| (if |mask| is nonzero) or |b| (if |mask| is zero).
+static inline crypto_word_t constant_time_select_w(crypto_word_t mask,
+                                                   crypto_word_t a,
+                                                   crypto_word_t b) {
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  //
+  // Adding barriers to both |mask| and |~mask| breaks the relationship between
+  // the two, which makes the compiler stick with bitmasks.
+  return (value_barrier_w(mask) & a) | (value_barrier_w(~mask) & b);
+}
+
+// constant_time_select_8 acts like |constant_time_select| but operates on
+// 8-bit values.
+static inline uint8_t constant_time_select_8(uint8_t mask, uint8_t a,
+                                             uint8_t b) {
+  return (uint8_t)(constant_time_select_w(mask, a, b));
+}
+
+// constant_time_select_int acts like |constant_time_select| but operates on
+// ints.
+static inline int constant_time_select_int(crypto_word_t mask, int a, int b) {
+  return (int)(constant_time_select_w(mask, (crypto_word_t)(a),
+                                      (crypto_word_t)(b)));
+}
+
+#if defined(BORINGSSL_CONSTANT_TIME_VALIDATION)
+
+// CONSTTIME_SECRET takes a pointer and a number of bytes and marks that region
+// of memory as secret. Secret data is tracked as it flows to registers and
+// other parts of a memory. If secret data is used as a condition for a branch,
+// or as a memory index, it will trigger warnings in valgrind.
+#define CONSTTIME_SECRET(x, y) VALGRIND_MAKE_MEM_UNDEFINED(x, y)
+
+// CONSTTIME_DECLASSIFY takes a pointer and a number of bytes and marks that
+// region of memory as public. Public data is not subject to constant-time
+// rules.
+#define CONSTTIME_DECLASSIFY(x, y) VALGRIND_MAKE_MEM_DEFINED(x, y)
+
+#else
+
+#define CONSTTIME_SECRET(x, y)
+#define CONSTTIME_DECLASSIFY(x, y)
+
+#endif  // BORINGSSL_CONSTANT_TIME_VALIDATION
+
+
+// Thread-safe initialisation.
+
+#if !defined(OPENSSL_THREADS)
+typedef uint32_t CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT 0
+#elif defined(OPENSSL_WINDOWS_THREADS)
+typedef INIT_ONCE CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT INIT_ONCE_STATIC_INIT
+#elif defined(OPENSSL_PTHREADS)
+typedef pthread_once_t CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT PTHREAD_ONCE_INIT
+#else
+#error "Unknown threading library"
+#endif
+
+// CRYPTO_once calls |init| exactly once per process. This is thread-safe: if
+// concurrent threads call |CRYPTO_once| with the same |CRYPTO_once_t| argument
+// then they will block until |init| completes, but |init| will have only been
+// called once.
+//
+// The |once| argument must be a |CRYPTO_once_t| that has been initialised with
+// the value |CRYPTO_ONCE_INIT|.
+OPENSSL_EXPORT void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void));
+
+
+// Reference counting.
+
+// CRYPTO_REFCOUNT_MAX is the value at which the reference count saturates.
+#define CRYPTO_REFCOUNT_MAX 0xffffffff
+
+// CRYPTO_refcount_inc atomically increments the value at |*count| unless the
+// value would overflow. It's safe for multiple threads to concurrently call
+// this or |CRYPTO_refcount_dec_and_test_zero| on the same
+// |CRYPTO_refcount_t|.
+OPENSSL_EXPORT void CRYPTO_refcount_inc(CRYPTO_refcount_t *count);
+
+// CRYPTO_refcount_dec_and_test_zero tests the value at |*count|:
+//   if it's zero, it crashes the address space.
+//   if it's the maximum value, it returns zero.
+//   otherwise, it atomically decrements it and returns one iff the resulting
+//       value is zero.
+//
+// It's safe for multiple threads to concurrently call this or
+// |CRYPTO_refcount_inc| on the same |CRYPTO_refcount_t|.
+OPENSSL_EXPORT int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count);
+
+
+// Locks.
+//
+// Two types of locks are defined: |CRYPTO_MUTEX|, which can be used in
+// structures as normal, and |struct CRYPTO_STATIC_MUTEX|, which can be used as
+// a global lock. A global lock must be initialised to the value
+// |CRYPTO_STATIC_MUTEX_INIT|.
+//
+// |CRYPTO_MUTEX| can appear in public structures and so is defined in
+// thread.h as a structure large enough to fit the real type. The global lock is
+// a different type so it may be initialized with platform initializer macros.
+
+#if !defined(OPENSSL_THREADS)
+struct CRYPTO_STATIC_MUTEX {
+  char padding;  // Empty structs have different sizes in C and C++.
+};
+#define CRYPTO_STATIC_MUTEX_INIT { 0 }
+#elif defined(OPENSSL_WINDOWS_THREADS)
+struct CRYPTO_STATIC_MUTEX {
+  SRWLOCK lock;
+};
+#define CRYPTO_STATIC_MUTEX_INIT { SRWLOCK_INIT }
+#elif defined(OPENSSL_PTHREADS)
+struct CRYPTO_STATIC_MUTEX {
+  pthread_rwlock_t lock;
+};
+#define CRYPTO_STATIC_MUTEX_INIT { PTHREAD_RWLOCK_INITIALIZER }
+#else
+#error "Unknown threading library"
+#endif
+
+// CRYPTO_MUTEX_init initialises |lock|. If |lock| is a static variable, use a
+// |CRYPTO_STATIC_MUTEX|.
+OPENSSL_EXPORT void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_lock_read locks |lock| such that other threads may also have a
+// read lock, but none may have a write lock.
+OPENSSL_EXPORT void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_lock_write locks |lock| such that no other thread has any type
+// of lock on it.
+OPENSSL_EXPORT void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_unlock_read unlocks |lock| for reading.
+OPENSSL_EXPORT void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_unlock_write unlocks |lock| for writing.
+OPENSSL_EXPORT void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_cleanup releases all resources held by |lock|.
+OPENSSL_EXPORT void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_lock_read locks |lock| such that other threads may also
+// have a read lock, but none may have a write lock. The |lock| variable does
+// not need to be initialised by any function, but must have been statically
+// initialised with |CRYPTO_STATIC_MUTEX_INIT|.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_lock_read(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_lock_write locks |lock| such that no other thread has
+// any type of lock on it.  The |lock| variable does not need to be initialised
+// by any function, but must have been statically initialised with
+// |CRYPTO_STATIC_MUTEX_INIT|.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_lock_write(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_unlock_read unlocks |lock| for reading.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_unlock_read(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_unlock_write unlocks |lock| for writing.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_unlock_write(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+#if defined(__cplusplus)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// MutexLockBase is a RAII helper for CRYPTO_MUTEX locking.
+template <void (*LockFunc)(CRYPTO_MUTEX *), void (*ReleaseFunc)(CRYPTO_MUTEX *)>
+class MutexLockBase {
+ public:
+  explicit MutexLockBase(CRYPTO_MUTEX *mu) : mu_(mu) {
+    assert(mu_ != nullptr);
+    LockFunc(mu_);
+  }
+  ~MutexLockBase() { ReleaseFunc(mu_); }
+  MutexLockBase(const MutexLockBase<LockFunc, ReleaseFunc> &) = delete;
+  MutexLockBase &operator=(const MutexLockBase<LockFunc, ReleaseFunc> &) =
+      delete;
+
+ private:
+  CRYPTO_MUTEX *const mu_;
+};
+
+}  // namespace internal
+
+using MutexWriteLock =
+    internal::MutexLockBase<CRYPTO_MUTEX_lock_write, CRYPTO_MUTEX_unlock_write>;
+using MutexReadLock =
+    internal::MutexLockBase<CRYPTO_MUTEX_lock_read, CRYPTO_MUTEX_unlock_read>;
+
+BSSL_NAMESPACE_END
+
+}  // extern "C++"
+#endif  // defined(__cplusplus)
+
+
+// Thread local storage.
+
+// thread_local_data_t enumerates the types of thread-local data that can be
+// stored.
+typedef enum {
+  OPENSSL_THREAD_LOCAL_ERR = 0,
+  OPENSSL_THREAD_LOCAL_RAND,
+  OPENSSL_THREAD_LOCAL_TEST,
+  NUM_OPENSSL_THREAD_LOCALS,
+} thread_local_data_t;
+
+// thread_local_destructor_t is the type of a destructor function that will be
+// called when a thread exits and its thread-local storage needs to be freed.
+typedef void (*thread_local_destructor_t)(void *);
+
+// CRYPTO_get_thread_local gets the pointer value that is stored for the
+// current thread for the given index, or NULL if none has been set.
+OPENSSL_EXPORT void *CRYPTO_get_thread_local(thread_local_data_t value);
+
+// CRYPTO_set_thread_local sets a pointer value for the current thread at the
+// given index. This function should only be called once per thread for a given
+// |index|: rather than update the pointer value itself, update the data that
+// is pointed to.
+//
+// The destructor function will be called when a thread exits to free this
+// thread-local data. All calls to |CRYPTO_set_thread_local| with the same
+// |index| should have the same |destructor| argument. The destructor may be
+// called with a NULL argument if a thread that never set a thread-local
+// pointer for |index|, exits. The destructor may be called concurrently with
+// different arguments.
+//
+// This function returns one on success or zero on error. If it returns zero
+// then |destructor| has been called with |value| already.
+OPENSSL_EXPORT int CRYPTO_set_thread_local(
+    thread_local_data_t index, void *value,
+    thread_local_destructor_t destructor);
+
+
+// ex_data
+
+typedef struct crypto_ex_data_func_st CRYPTO_EX_DATA_FUNCS;
+
+DECLARE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
+
+// CRYPTO_EX_DATA_CLASS tracks the ex_indices registered for a type which
+// supports ex_data. It should defined as a static global within the module
+// which defines that type.
+typedef struct {
+  struct CRYPTO_STATIC_MUTEX lock;
+  STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth;
+  // num_reserved is one if the ex_data index zero is reserved for legacy
+  // |TYPE_get_app_data| functions.
+  uint8_t num_reserved;
+} CRYPTO_EX_DATA_CLASS;
+
+#define CRYPTO_EX_DATA_CLASS_INIT {CRYPTO_STATIC_MUTEX_INIT, NULL, 0}
+#define CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA \
+    {CRYPTO_STATIC_MUTEX_INIT, NULL, 1}
+
+// CRYPTO_get_ex_new_index allocates a new index for |ex_data_class| and writes
+// it to |*out_index|. Each class of object should provide a wrapper function
+// that uses the correct |CRYPTO_EX_DATA_CLASS|. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int CRYPTO_get_ex_new_index(CRYPTO_EX_DATA_CLASS *ex_data_class,
+                                           int *out_index, long argl,
+                                           void *argp,
+                                           CRYPTO_EX_free *free_func);
+
+// CRYPTO_set_ex_data sets an extra data pointer on a given object. Each class
+// of object should provide a wrapper function.
+OPENSSL_EXPORT int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val);
+
+// CRYPTO_get_ex_data returns an extra data pointer for a given object, or NULL
+// if no such index exists. Each class of object should provide a wrapper
+// function.
+OPENSSL_EXPORT void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int index);
+
+// CRYPTO_new_ex_data initialises a newly allocated |CRYPTO_EX_DATA|.
+OPENSSL_EXPORT void CRYPTO_new_ex_data(CRYPTO_EX_DATA *ad);
+
+// CRYPTO_free_ex_data frees |ad|, which is embedded inside |obj|, which is an
+// object of the given class.
+OPENSSL_EXPORT void CRYPTO_free_ex_data(CRYPTO_EX_DATA_CLASS *ex_data_class,
+                                        void *obj, CRYPTO_EX_DATA *ad);
+
+
+// Endianness conversions.
+
+#if defined(__GNUC__) && __GNUC__ >= 2
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return __builtin_bswap16(x);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  return __builtin_bswap32(x);
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return __builtin_bswap64(x);
+}
+#elif defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <stdlib.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#pragma intrinsic(_byteswap_uint64, _byteswap_ulong, _byteswap_ushort)
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return _byteswap_ushort(x);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  return _byteswap_ulong(x);
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return _byteswap_uint64(x);
+}
+#else
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return (x >> 8) | (x << 8);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  x = (x >> 16) | (x << 16);
+  x = ((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8);
+  return x;
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return CRYPTO_bswap4(x >> 32) | (((uint64_t)CRYPTO_bswap4(x)) << 32);
+}
+#endif
+
+
+// Language bug workarounds.
+//
+// Most C standard library functions are undefined if passed NULL, even when the
+// corresponding length is zero. This gives them (and, in turn, all functions
+// which call them) surprising behavior on empty arrays. Some compilers will
+// miscompile code due to this rule. See also
+// https://www.imperialviolet.org/2016/06/26/nonnull.html
+//
+// These wrapper functions behave the same as the corresponding C standard
+// functions, but behave as expected when passed NULL if the length is zero.
+//
+// Note |OPENSSL_memcmp| is a different function from |CRYPTO_memcmp|.
+
+// C++ defines |memchr| as a const-correct overload.
+#if defined(__cplusplus)
+extern "C++" {
+
+static inline const void *OPENSSL_memchr(const void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+static inline void *OPENSSL_memchr(void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+}  // extern "C++"
+#else  // __cplusplus
+
+static inline void *OPENSSL_memchr(const void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+#endif  // __cplusplus
+
+static inline int OPENSSL_memcmp(const void *s1, const void *s2, size_t n) {
+  if (n == 0) {
+    return 0;
+  }
+
+  return memcmp(s1, s2, n);
+}
+
+static inline void *OPENSSL_memcpy(void *dst, const void *src, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memcpy(dst, src, n);
+}
+
+static inline void *OPENSSL_memmove(void *dst, const void *src, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memmove(dst, src, n);
+}
+
+static inline void *OPENSSL_memset(void *dst, int c, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memset(dst, c, n);
+}
+
+#if defined(BORINGSSL_FIPS)
+// BORINGSSL_FIPS_abort is called when a FIPS power-on or continuous test
+// fails. It prevents any further cryptographic operations by the current
+// process.
+void BORINGSSL_FIPS_abort(void) __attribute__((noreturn));
+#endif
+
+// boringssl_fips_self_test runs the FIPS KAT-based self tests. It returns one
+// on success and zero on error. The argument is the integrity hash of the FIPS
+// module and may be used to check and write flag files to suppress duplicate
+// self-tests. If |module_hash_len| is zero then no flag file will be checked
+// nor written and tests will always be run.
+int boringssl_fips_self_test(const uint8_t *module_hash,
+                             size_t module_hash_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h.grpc_back
new file mode 100644
index 0000000..edba9f9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/internal.h.grpc_back	
@@ -0,0 +1,834 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CRYPTO_INTERNAL_H
+#define OPENSSL_HEADER_CRYPTO_INTERNAL_H
+
+#include <openssl/ex_data.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#include <assert.h>
+#include <string.h>
+
+#if defined(BORINGSSL_CONSTANT_TIME_VALIDATION)
+#include <valgrind/memcheck.h>
+#endif
+
+#if !defined(__cplusplus)
+#if defined(_MSC_VER)
+#define alignas(x) __declspec(align(x))
+#define alignof __alignof
+#else
+#include <stdalign.h>
+#endif
+#endif
+
+#if defined(OPENSSL_THREADS) && \
+    (!defined(OPENSSL_WINDOWS) || defined(__MINGW32__))
+#include <pthread.h>
+#define OPENSSL_PTHREADS
+#endif
+
+#if defined(OPENSSL_THREADS) && !defined(OPENSSL_PTHREADS) && \
+    defined(OPENSSL_WINDOWS)
+#define OPENSSL_WINDOWS_THREADS
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || defined(OPENSSL_ARM) || \
+    defined(OPENSSL_AARCH64) || defined(OPENSSL_PPC64LE)
+// OPENSSL_cpuid_setup initializes the platform-specific feature cache.
+void OPENSSL_cpuid_setup(void);
+#endif
+
+#if (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+// OPENSSL_get_armcap_pointer_for_test returns a pointer to |OPENSSL_armcap_P|
+// for unit tests. Any modifications to the value must be made after
+// |CRYPTO_library_init| but before any other function call in BoringSSL.
+OPENSSL_EXPORT uint32_t *OPENSSL_get_armcap_pointer_for_test(void);
+#endif
+
+
+#if (!defined(_MSC_VER) || defined(__clang__)) && defined(OPENSSL_64_BIT)
+#define BORINGSSL_HAS_UINT128
+typedef __int128_t int128_t;
+typedef __uint128_t uint128_t;
+
+// clang-cl supports __uint128_t but modulus and division don't work.
+// https://crbug.com/787617.
+#if !defined(_MSC_VER) || !defined(__clang__)
+#define BORINGSSL_CAN_DIVIDE_UINT128
+#endif
+#endif
+
+#define OPENSSL_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
+
+// Have a generic fall-through for different versions of C/C++.
+#if defined(__cplusplus) && __cplusplus >= 201703L
+#define OPENSSL_FALLTHROUGH [[fallthrough]]
+#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__clang__)
+#define OPENSSL_FALLTHROUGH [[clang::fallthrough]]
+#elif defined(__cplusplus) && __cplusplus >= 201103L && defined(__GNUC__) && \
+    __GNUC__ >= 7
+#define OPENSSL_FALLTHROUGH [[gnu::fallthrough]]
+#elif defined(__GNUC__) && __GNUC__ >= 7 // gcc 7
+#define OPENSSL_FALLTHROUGH __attribute__ ((fallthrough))
+#elif defined(__clang__)
+#if __has_attribute(fallthrough) && __clang_major__ >= 5
+// Clang 3.5, at least, complains about "error: declaration does not declare
+// anything", possibily because we put a semicolon after this macro in
+// practice. Thus limit it to >= Clang 5, which does work.
+#define OPENSSL_FALLTHROUGH __attribute__ ((fallthrough))
+#else // clang versions that do not support fallthrough.
+#define OPENSSL_FALLTHROUGH
+#endif
+#else // C++11 on gcc 6, and all other cases
+#define OPENSSL_FALLTHROUGH
+#endif
+
+// For convenience in testing 64-bit generic code, we allow disabling SSE2
+// intrinsics via |OPENSSL_NO_SSE2_FOR_TESTING|. x86_64 always has SSE2
+// available, so we would otherwise need to test such code on a non-x86_64
+// platform.
+#if defined(__SSE2__) && !defined(OPENSSL_NO_SSE2_FOR_TESTING)
+#define OPENSSL_SSE2
+#endif
+
+// buffers_alias returns one if |a| and |b| alias and zero otherwise.
+static inline int buffers_alias(const uint8_t *a, size_t a_len,
+                                const uint8_t *b, size_t b_len) {
+  // Cast |a| and |b| to integers. In C, pointer comparisons between unrelated
+  // objects are undefined whereas pointer to integer conversions are merely
+  // implementation-defined. We assume the implementation defined it in a sane
+  // way.
+  uintptr_t a_u = (uintptr_t)a;
+  uintptr_t b_u = (uintptr_t)b;
+  return a_u + a_len > b_u && b_u + b_len > a_u;
+}
+
+
+// Constant-time utility functions.
+//
+// The following methods return a bitmask of all ones (0xff...f) for true and 0
+// for false. This is useful for choosing a value based on the result of a
+// conditional in constant time. For example,
+//
+// if (a < b) {
+//   c = a;
+// } else {
+//   c = b;
+// }
+//
+// can be written as
+//
+// crypto_word_t lt = constant_time_lt_w(a, b);
+// c = constant_time_select_w(lt, a, b);
+
+// crypto_word_t is the type that most constant-time functions use. Ideally we
+// would like it to be |size_t|, but NaCl builds in 64-bit mode with 32-bit
+// pointers, which means that |size_t| can be 32 bits when |BN_ULONG| is 64
+// bits. Since we want to be able to do constant-time operations on a
+// |BN_ULONG|, |crypto_word_t| is defined as an unsigned value with the native
+// word length.
+#if defined(OPENSSL_64_BIT)
+typedef uint64_t crypto_word_t;
+#elif defined(OPENSSL_32_BIT)
+typedef uint32_t crypto_word_t;
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+#define CONSTTIME_TRUE_W ~((crypto_word_t)0)
+#define CONSTTIME_FALSE_W ((crypto_word_t)0)
+#define CONSTTIME_TRUE_8 ((uint8_t)0xff)
+#define CONSTTIME_FALSE_8 ((uint8_t)0)
+
+// value_barrier_w returns |a|, but prevents GCC and Clang from reasoning about
+// the returned value. This is used to mitigate compilers undoing constant-time
+// code, until we can express our requirements directly in the language.
+//
+// Note the compiler is aware that |value_barrier_w| has no side effects and
+// always has the same output for a given input. This allows it to eliminate
+// dead code, move computations across loops, and vectorize.
+static inline crypto_word_t value_barrier_w(crypto_word_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// value_barrier_u32 behaves like |value_barrier_w| but takes a |uint32_t|.
+static inline uint32_t value_barrier_u32(uint32_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// value_barrier_u64 behaves like |value_barrier_w| but takes a |uint64_t|.
+static inline uint64_t value_barrier_u64(uint64_t a) {
+#if !defined(OPENSSL_NO_ASM) && (defined(__GNUC__) || defined(__clang__))
+  __asm__("" : "+r"(a) : /* no inputs */);
+#endif
+  return a;
+}
+
+// constant_time_msb_w returns the given value with the MSB copied to all the
+// other bits.
+static inline crypto_word_t constant_time_msb_w(crypto_word_t a) {
+  return 0u - (a >> (sizeof(a) * 8 - 1));
+}
+
+// constant_time_lt_w returns 0xff..f if a < b and 0 otherwise.
+static inline crypto_word_t constant_time_lt_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  // Consider the two cases of the problem:
+  //   msb(a) == msb(b): a < b iff the MSB of a - b is set.
+  //   msb(a) != msb(b): a < b iff the MSB of b is set.
+  //
+  // If msb(a) == msb(b) then the following evaluates as:
+  //   msb(a^((a^b)|((a-b)^a))) ==
+  //   msb(a^((a-b) ^ a))       ==   (because msb(a^b) == 0)
+  //   msb(a^a^(a-b))           ==   (rearranging)
+  //   msb(a-b)                      (because ∀x. x^x == 0)
+  //
+  // Else, if msb(a) != msb(b) then the following evaluates as:
+  //   msb(a^((a^b)|((a-b)^a))) ==
+  //   msb(a^(𝟙 | ((a-b)^a)))   ==   (because msb(a^b) == 1 and 𝟙
+  //                                  represents a value s.t. msb(𝟙) = 1)
+  //   msb(a^𝟙)                 ==   (because ORing with 1 results in 1)
+  //   msb(b)
+  //
+  //
+  // Here is an SMT-LIB verification of this formula:
+  //
+  // (define-fun lt ((a (_ BitVec 32)) (b (_ BitVec 32))) (_ BitVec 32)
+  //   (bvxor a (bvor (bvxor a b) (bvxor (bvsub a b) a)))
+  // )
+  //
+  // (declare-fun a () (_ BitVec 32))
+  // (declare-fun b () (_ BitVec 32))
+  //
+  // (assert (not (= (= #x00000001 (bvlshr (lt a b) #x0000001f)) (bvult a b))))
+  // (check-sat)
+  // (get-model)
+  return constant_time_msb_w(a^((a^b)|((a-b)^a)));
+}
+
+// constant_time_lt_8 acts like |constant_time_lt_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_lt_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_lt_w(a, b));
+}
+
+// constant_time_ge_w returns 0xff..f if a >= b and 0 otherwise.
+static inline crypto_word_t constant_time_ge_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  return ~constant_time_lt_w(a, b);
+}
+
+// constant_time_ge_8 acts like |constant_time_ge_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_ge_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_ge_w(a, b));
+}
+
+// constant_time_is_zero returns 0xff..f if a == 0 and 0 otherwise.
+static inline crypto_word_t constant_time_is_zero_w(crypto_word_t a) {
+  // Here is an SMT-LIB verification of this formula:
+  //
+  // (define-fun is_zero ((a (_ BitVec 32))) (_ BitVec 32)
+  //   (bvand (bvnot a) (bvsub a #x00000001))
+  // )
+  //
+  // (declare-fun a () (_ BitVec 32))
+  //
+  // (assert (not (= (= #x00000001 (bvlshr (is_zero a) #x0000001f)) (= a #x00000000))))
+  // (check-sat)
+  // (get-model)
+  return constant_time_msb_w(~a & (a - 1));
+}
+
+// constant_time_is_zero_8 acts like |constant_time_is_zero_w| but returns an
+// 8-bit mask.
+static inline uint8_t constant_time_is_zero_8(crypto_word_t a) {
+  return (uint8_t)(constant_time_is_zero_w(a));
+}
+
+// constant_time_eq_w returns 0xff..f if a == b and 0 otherwise.
+static inline crypto_word_t constant_time_eq_w(crypto_word_t a,
+                                               crypto_word_t b) {
+  return constant_time_is_zero_w(a ^ b);
+}
+
+// constant_time_eq_8 acts like |constant_time_eq_w| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_eq_8(crypto_word_t a, crypto_word_t b) {
+  return (uint8_t)(constant_time_eq_w(a, b));
+}
+
+// constant_time_eq_int acts like |constant_time_eq_w| but works on int
+// values.
+static inline crypto_word_t constant_time_eq_int(int a, int b) {
+  return constant_time_eq_w((crypto_word_t)(a), (crypto_word_t)(b));
+}
+
+// constant_time_eq_int_8 acts like |constant_time_eq_int| but returns an 8-bit
+// mask.
+static inline uint8_t constant_time_eq_int_8(int a, int b) {
+  return constant_time_eq_8((crypto_word_t)(a), (crypto_word_t)(b));
+}
+
+// constant_time_select_w returns (mask & a) | (~mask & b). When |mask| is all
+// 1s or all 0s (as returned by the methods above), the select methods return
+// either |a| (if |mask| is nonzero) or |b| (if |mask| is zero).
+static inline crypto_word_t constant_time_select_w(crypto_word_t mask,
+                                                   crypto_word_t a,
+                                                   crypto_word_t b) {
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  //
+  // Adding barriers to both |mask| and |~mask| breaks the relationship between
+  // the two, which makes the compiler stick with bitmasks.
+  return (value_barrier_w(mask) & a) | (value_barrier_w(~mask) & b);
+}
+
+// constant_time_select_8 acts like |constant_time_select| but operates on
+// 8-bit values.
+static inline uint8_t constant_time_select_8(uint8_t mask, uint8_t a,
+                                             uint8_t b) {
+  return (uint8_t)(constant_time_select_w(mask, a, b));
+}
+
+// constant_time_select_int acts like |constant_time_select| but operates on
+// ints.
+static inline int constant_time_select_int(crypto_word_t mask, int a, int b) {
+  return (int)(constant_time_select_w(mask, (crypto_word_t)(a),
+                                      (crypto_word_t)(b)));
+}
+
+#if defined(BORINGSSL_CONSTANT_TIME_VALIDATION)
+
+// CONSTTIME_SECRET takes a pointer and a number of bytes and marks that region
+// of memory as secret. Secret data is tracked as it flows to registers and
+// other parts of a memory. If secret data is used as a condition for a branch,
+// or as a memory index, it will trigger warnings in valgrind.
+#define CONSTTIME_SECRET(x, y) VALGRIND_MAKE_MEM_UNDEFINED(x, y)
+
+// CONSTTIME_DECLASSIFY takes a pointer and a number of bytes and marks that
+// region of memory as public. Public data is not subject to constant-time
+// rules.
+#define CONSTTIME_DECLASSIFY(x, y) VALGRIND_MAKE_MEM_DEFINED(x, y)
+
+#else
+
+#define CONSTTIME_SECRET(x, y)
+#define CONSTTIME_DECLASSIFY(x, y)
+
+#endif  // BORINGSSL_CONSTANT_TIME_VALIDATION
+
+
+// Thread-safe initialisation.
+
+#if !defined(OPENSSL_THREADS)
+typedef uint32_t CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT 0
+#elif defined(OPENSSL_WINDOWS_THREADS)
+typedef INIT_ONCE CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT INIT_ONCE_STATIC_INIT
+#elif defined(OPENSSL_PTHREADS)
+typedef pthread_once_t CRYPTO_once_t;
+#define CRYPTO_ONCE_INIT PTHREAD_ONCE_INIT
+#else
+#error "Unknown threading library"
+#endif
+
+// CRYPTO_once calls |init| exactly once per process. This is thread-safe: if
+// concurrent threads call |CRYPTO_once| with the same |CRYPTO_once_t| argument
+// then they will block until |init| completes, but |init| will have only been
+// called once.
+//
+// The |once| argument must be a |CRYPTO_once_t| that has been initialised with
+// the value |CRYPTO_ONCE_INIT|.
+OPENSSL_EXPORT void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void));
+
+
+// Reference counting.
+
+// CRYPTO_REFCOUNT_MAX is the value at which the reference count saturates.
+#define CRYPTO_REFCOUNT_MAX 0xffffffff
+
+// CRYPTO_refcount_inc atomically increments the value at |*count| unless the
+// value would overflow. It's safe for multiple threads to concurrently call
+// this or |CRYPTO_refcount_dec_and_test_zero| on the same
+// |CRYPTO_refcount_t|.
+OPENSSL_EXPORT void CRYPTO_refcount_inc(CRYPTO_refcount_t *count);
+
+// CRYPTO_refcount_dec_and_test_zero tests the value at |*count|:
+//   if it's zero, it crashes the address space.
+//   if it's the maximum value, it returns zero.
+//   otherwise, it atomically decrements it and returns one iff the resulting
+//       value is zero.
+//
+// It's safe for multiple threads to concurrently call this or
+// |CRYPTO_refcount_inc| on the same |CRYPTO_refcount_t|.
+OPENSSL_EXPORT int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count);
+
+
+// Locks.
+//
+// Two types of locks are defined: |CRYPTO_MUTEX|, which can be used in
+// structures as normal, and |struct CRYPTO_STATIC_MUTEX|, which can be used as
+// a global lock. A global lock must be initialised to the value
+// |CRYPTO_STATIC_MUTEX_INIT|.
+//
+// |CRYPTO_MUTEX| can appear in public structures and so is defined in
+// thread.h as a structure large enough to fit the real type. The global lock is
+// a different type so it may be initialized with platform initializer macros.
+
+#if !defined(OPENSSL_THREADS)
+struct CRYPTO_STATIC_MUTEX {
+  char padding;  // Empty structs have different sizes in C and C++.
+};
+#define CRYPTO_STATIC_MUTEX_INIT { 0 }
+#elif defined(OPENSSL_WINDOWS_THREADS)
+struct CRYPTO_STATIC_MUTEX {
+  SRWLOCK lock;
+};
+#define CRYPTO_STATIC_MUTEX_INIT { SRWLOCK_INIT }
+#elif defined(OPENSSL_PTHREADS)
+struct CRYPTO_STATIC_MUTEX {
+  pthread_rwlock_t lock;
+};
+#define CRYPTO_STATIC_MUTEX_INIT { PTHREAD_RWLOCK_INITIALIZER }
+#else
+#error "Unknown threading library"
+#endif
+
+// CRYPTO_MUTEX_init initialises |lock|. If |lock| is a static variable, use a
+// |CRYPTO_STATIC_MUTEX|.
+OPENSSL_EXPORT void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_lock_read locks |lock| such that other threads may also have a
+// read lock, but none may have a write lock.
+OPENSSL_EXPORT void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_lock_write locks |lock| such that no other thread has any type
+// of lock on it.
+OPENSSL_EXPORT void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_unlock_read unlocks |lock| for reading.
+OPENSSL_EXPORT void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_unlock_write unlocks |lock| for writing.
+OPENSSL_EXPORT void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock);
+
+// CRYPTO_MUTEX_cleanup releases all resources held by |lock|.
+OPENSSL_EXPORT void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_lock_read locks |lock| such that other threads may also
+// have a read lock, but none may have a write lock. The |lock| variable does
+// not need to be initialised by any function, but must have been statically
+// initialised with |CRYPTO_STATIC_MUTEX_INIT|.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_lock_read(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_lock_write locks |lock| such that no other thread has
+// any type of lock on it.  The |lock| variable does not need to be initialised
+// by any function, but must have been statically initialised with
+// |CRYPTO_STATIC_MUTEX_INIT|.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_lock_write(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_unlock_read unlocks |lock| for reading.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_unlock_read(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+// CRYPTO_STATIC_MUTEX_unlock_write unlocks |lock| for writing.
+OPENSSL_EXPORT void CRYPTO_STATIC_MUTEX_unlock_write(
+    struct CRYPTO_STATIC_MUTEX *lock);
+
+#if defined(__cplusplus)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// MutexLockBase is a RAII helper for CRYPTO_MUTEX locking.
+template <void (*LockFunc)(CRYPTO_MUTEX *), void (*ReleaseFunc)(CRYPTO_MUTEX *)>
+class MutexLockBase {
+ public:
+  explicit MutexLockBase(CRYPTO_MUTEX *mu) : mu_(mu) {
+    assert(mu_ != nullptr);
+    LockFunc(mu_);
+  }
+  ~MutexLockBase() { ReleaseFunc(mu_); }
+  MutexLockBase(const MutexLockBase<LockFunc, ReleaseFunc> &) = delete;
+  MutexLockBase &operator=(const MutexLockBase<LockFunc, ReleaseFunc> &) =
+      delete;
+
+ private:
+  CRYPTO_MUTEX *const mu_;
+};
+
+}  // namespace internal
+
+using MutexWriteLock =
+    internal::MutexLockBase<CRYPTO_MUTEX_lock_write, CRYPTO_MUTEX_unlock_write>;
+using MutexReadLock =
+    internal::MutexLockBase<CRYPTO_MUTEX_lock_read, CRYPTO_MUTEX_unlock_read>;
+
+BSSL_NAMESPACE_END
+
+}  // extern "C++"
+#endif  // defined(__cplusplus)
+
+
+// Thread local storage.
+
+// thread_local_data_t enumerates the types of thread-local data that can be
+// stored.
+typedef enum {
+  OPENSSL_THREAD_LOCAL_ERR = 0,
+  OPENSSL_THREAD_LOCAL_RAND,
+  OPENSSL_THREAD_LOCAL_TEST,
+  NUM_OPENSSL_THREAD_LOCALS,
+} thread_local_data_t;
+
+// thread_local_destructor_t is the type of a destructor function that will be
+// called when a thread exits and its thread-local storage needs to be freed.
+typedef void (*thread_local_destructor_t)(void *);
+
+// CRYPTO_get_thread_local gets the pointer value that is stored for the
+// current thread for the given index, or NULL if none has been set.
+OPENSSL_EXPORT void *CRYPTO_get_thread_local(thread_local_data_t value);
+
+// CRYPTO_set_thread_local sets a pointer value for the current thread at the
+// given index. This function should only be called once per thread for a given
+// |index|: rather than update the pointer value itself, update the data that
+// is pointed to.
+//
+// The destructor function will be called when a thread exits to free this
+// thread-local data. All calls to |CRYPTO_set_thread_local| with the same
+// |index| should have the same |destructor| argument. The destructor may be
+// called with a NULL argument if a thread that never set a thread-local
+// pointer for |index|, exits. The destructor may be called concurrently with
+// different arguments.
+//
+// This function returns one on success or zero on error. If it returns zero
+// then |destructor| has been called with |value| already.
+OPENSSL_EXPORT int CRYPTO_set_thread_local(
+    thread_local_data_t index, void *value,
+    thread_local_destructor_t destructor);
+
+
+// ex_data
+
+typedef struct crypto_ex_data_func_st CRYPTO_EX_DATA_FUNCS;
+
+DECLARE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
+
+// CRYPTO_EX_DATA_CLASS tracks the ex_indices registered for a type which
+// supports ex_data. It should defined as a static global within the module
+// which defines that type.
+typedef struct {
+  struct CRYPTO_STATIC_MUTEX lock;
+  STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth;
+  // num_reserved is one if the ex_data index zero is reserved for legacy
+  // |TYPE_get_app_data| functions.
+  uint8_t num_reserved;
+} CRYPTO_EX_DATA_CLASS;
+
+#define CRYPTO_EX_DATA_CLASS_INIT {CRYPTO_STATIC_MUTEX_INIT, NULL, 0}
+#define CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA \
+    {CRYPTO_STATIC_MUTEX_INIT, NULL, 1}
+
+// CRYPTO_get_ex_new_index allocates a new index for |ex_data_class| and writes
+// it to |*out_index|. Each class of object should provide a wrapper function
+// that uses the correct |CRYPTO_EX_DATA_CLASS|. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int CRYPTO_get_ex_new_index(CRYPTO_EX_DATA_CLASS *ex_data_class,
+                                           int *out_index, long argl,
+                                           void *argp,
+                                           CRYPTO_EX_free *free_func);
+
+// CRYPTO_set_ex_data sets an extra data pointer on a given object. Each class
+// of object should provide a wrapper function.
+OPENSSL_EXPORT int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val);
+
+// CRYPTO_get_ex_data returns an extra data pointer for a given object, or NULL
+// if no such index exists. Each class of object should provide a wrapper
+// function.
+OPENSSL_EXPORT void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int index);
+
+// CRYPTO_new_ex_data initialises a newly allocated |CRYPTO_EX_DATA|.
+OPENSSL_EXPORT void CRYPTO_new_ex_data(CRYPTO_EX_DATA *ad);
+
+// CRYPTO_free_ex_data frees |ad|, which is embedded inside |obj|, which is an
+// object of the given class.
+OPENSSL_EXPORT void CRYPTO_free_ex_data(CRYPTO_EX_DATA_CLASS *ex_data_class,
+                                        void *obj, CRYPTO_EX_DATA *ad);
+
+
+// Endianness conversions.
+
+#if defined(__GNUC__) && __GNUC__ >= 2
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return __builtin_bswap16(x);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  return __builtin_bswap32(x);
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return __builtin_bswap64(x);
+}
+#elif defined(_MSC_VER)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <stdlib.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#pragma intrinsic(_byteswap_uint64, _byteswap_ulong, _byteswap_ushort)
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return _byteswap_ushort(x);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  return _byteswap_ulong(x);
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return _byteswap_uint64(x);
+}
+#else
+static inline uint16_t CRYPTO_bswap2(uint16_t x) {
+  return (x >> 8) | (x << 8);
+}
+
+static inline uint32_t CRYPTO_bswap4(uint32_t x) {
+  x = (x >> 16) | (x << 16);
+  x = ((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8);
+  return x;
+}
+
+static inline uint64_t CRYPTO_bswap8(uint64_t x) {
+  return CRYPTO_bswap4(x >> 32) | (((uint64_t)CRYPTO_bswap4(x)) << 32);
+}
+#endif
+
+
+// Language bug workarounds.
+//
+// Most C standard library functions are undefined if passed NULL, even when the
+// corresponding length is zero. This gives them (and, in turn, all functions
+// which call them) surprising behavior on empty arrays. Some compilers will
+// miscompile code due to this rule. See also
+// https://www.imperialviolet.org/2016/06/26/nonnull.html
+//
+// These wrapper functions behave the same as the corresponding C standard
+// functions, but behave as expected when passed NULL if the length is zero.
+//
+// Note |OPENSSL_memcmp| is a different function from |CRYPTO_memcmp|.
+
+// C++ defines |memchr| as a const-correct overload.
+#if defined(__cplusplus)
+extern "C++" {
+
+static inline const void *OPENSSL_memchr(const void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+static inline void *OPENSSL_memchr(void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+}  // extern "C++"
+#else  // __cplusplus
+
+static inline void *OPENSSL_memchr(const void *s, int c, size_t n) {
+  if (n == 0) {
+    return NULL;
+  }
+
+  return memchr(s, c, n);
+}
+
+#endif  // __cplusplus
+
+static inline int OPENSSL_memcmp(const void *s1, const void *s2, size_t n) {
+  if (n == 0) {
+    return 0;
+  }
+
+  return memcmp(s1, s2, n);
+}
+
+static inline void *OPENSSL_memcpy(void *dst, const void *src, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memcpy(dst, src, n);
+}
+
+static inline void *OPENSSL_memmove(void *dst, const void *src, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memmove(dst, src, n);
+}
+
+static inline void *OPENSSL_memset(void *dst, int c, size_t n) {
+  if (n == 0) {
+    return dst;
+  }
+
+  return memset(dst, c, n);
+}
+
+#if defined(BORINGSSL_FIPS)
+// BORINGSSL_FIPS_abort is called when a FIPS power-on or continuous test
+// fails. It prevents any further cryptographic operations by the current
+// process.
+void BORINGSSL_FIPS_abort(void) __attribute__((noreturn));
+#endif
+
+// boringssl_fips_self_test runs the FIPS KAT-based self tests. It returns one
+// on success and zero on error. The argument is the integrity hash of the FIPS
+// module and may be used to check and write flag files to suppress duplicate
+// self-tests. If |module_hash_len| is zero then no flag file will be checked
+// nor written and tests will always be run.
+int boringssl_fips_self_test(const uint8_t *module_hash,
+                             size_t module_hash_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c
new file mode 100644
index 0000000..dc4cfbc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c	
@@ -0,0 +1,348 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/lhash.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+// kMinNumBuckets is the minimum size of the buckets array in an |_LHASH|.
+static const size_t kMinNumBuckets = 16;
+
+// kMaxAverageChainLength contains the maximum, average chain length. When the
+// average chain length exceeds this value, the hash table will be resized.
+static const size_t kMaxAverageChainLength = 2;
+static const size_t kMinAverageChainLength = 1;
+
+struct lhash_st {
+  // num_items contains the total number of items in the hash table.
+  size_t num_items;
+  // buckets is an array of |num_buckets| pointers. Each points to the head of
+  // a chain of LHASH_ITEM objects that have the same hash value, mod
+  // |num_buckets|.
+  LHASH_ITEM **buckets;
+  // num_buckets contains the length of |buckets|. This value is always >=
+  // kMinNumBuckets.
+  size_t num_buckets;
+  // callback_depth contains the current depth of |lh_doall| or |lh_doall_arg|
+  // calls. If non-zero then this suppresses resizing of the |buckets| array,
+  // which would otherwise disrupt the iteration.
+  unsigned callback_depth;
+
+  lhash_cmp_func comp;
+  lhash_hash_func hash;
+};
+
+_LHASH *lh_new(lhash_hash_func hash, lhash_cmp_func comp) {
+  _LHASH *ret = OPENSSL_malloc(sizeof(_LHASH));
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(_LHASH));
+
+  ret->num_buckets = kMinNumBuckets;
+  ret->buckets = OPENSSL_malloc(sizeof(LHASH_ITEM *) * ret->num_buckets);
+  if (ret->buckets == NULL) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+  OPENSSL_memset(ret->buckets, 0, sizeof(LHASH_ITEM *) * ret->num_buckets);
+
+  ret->comp = comp;
+  ret->hash = hash;
+  return ret;
+}
+
+void lh_free(_LHASH *lh) {
+  if (lh == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < lh->num_buckets; i++) {
+    LHASH_ITEM *next;
+    for (LHASH_ITEM *n = lh->buckets[i]; n != NULL; n = next) {
+      next = n->next;
+      OPENSSL_free(n);
+    }
+  }
+
+  OPENSSL_free(lh->buckets);
+  OPENSSL_free(lh);
+}
+
+size_t lh_num_items(const _LHASH *lh) { return lh->num_items; }
+
+// get_next_ptr_and_hash returns a pointer to the pointer that points to the
+// item equal to |data|. In other words, it searches for an item equal to |data|
+// and, if it's at the start of a chain, then it returns a pointer to an
+// element of |lh->buckets|, otherwise it returns a pointer to the |next|
+// element of the previous item in the chain. If an element equal to |data| is
+// not found, it returns a pointer that points to a NULL pointer. If |out_hash|
+// is not NULL, then it also puts the hash value of |data| in |*out_hash|.
+static LHASH_ITEM **get_next_ptr_and_hash(const _LHASH *lh, uint32_t *out_hash,
+                                          const void *data,
+                                          lhash_hash_func_helper call_hash_func,
+                                          lhash_cmp_func_helper call_cmp_func) {
+  const uint32_t hash = call_hash_func(lh->hash, data);
+  if (out_hash != NULL) {
+    *out_hash = hash;
+  }
+
+  LHASH_ITEM **ret = &lh->buckets[hash % lh->num_buckets];
+  for (LHASH_ITEM *cur = *ret; cur != NULL; cur = *ret) {
+    if (call_cmp_func(lh->comp, cur->data, data) == 0) {
+      break;
+    }
+    ret = &cur->next;
+  }
+
+  return ret;
+}
+
+// get_next_ptr_by_key behaves like |get_next_ptr_and_hash| but takes a key
+// which may be a different type from the values stored in |lh|.
+static LHASH_ITEM **get_next_ptr_by_key(const _LHASH *lh, const void *key,
+                                        uint32_t key_hash,
+                                        int (*cmp_key)(const void *key,
+                                                       const void *value)) {
+  LHASH_ITEM **ret = &lh->buckets[key_hash % lh->num_buckets];
+  for (LHASH_ITEM *cur = *ret; cur != NULL; cur = *ret) {
+    if (cmp_key(key, cur->data) == 0) {
+      break;
+    }
+    ret = &cur->next;
+  }
+
+  return ret;
+}
+
+void *lh_retrieve(const _LHASH *lh, const void *data,
+                  lhash_hash_func_helper call_hash_func,
+                  lhash_cmp_func_helper call_cmp_func) {
+  LHASH_ITEM **next_ptr =
+      get_next_ptr_and_hash(lh, NULL, data, call_hash_func, call_cmp_func);
+  return *next_ptr == NULL ? NULL : (*next_ptr)->data;
+}
+
+void *lh_retrieve_key(const _LHASH *lh, const void *key, uint32_t key_hash,
+                      int (*cmp_key)(const void *key, const void *value)) {
+  LHASH_ITEM **next_ptr = get_next_ptr_by_key(lh, key, key_hash, cmp_key);
+  return *next_ptr == NULL ? NULL : (*next_ptr)->data;
+}
+
+// lh_rebucket allocates a new array of |new_num_buckets| pointers and
+// redistributes the existing items into it before making it |lh->buckets| and
+// freeing the old array.
+static void lh_rebucket(_LHASH *lh, const size_t new_num_buckets) {
+  LHASH_ITEM **new_buckets, *cur, *next;
+  size_t i, alloc_size;
+
+  alloc_size = sizeof(LHASH_ITEM *) * new_num_buckets;
+  if (alloc_size / sizeof(LHASH_ITEM*) != new_num_buckets) {
+    return;
+  }
+
+  new_buckets = OPENSSL_malloc(alloc_size);
+  if (new_buckets == NULL) {
+    return;
+  }
+  OPENSSL_memset(new_buckets, 0, alloc_size);
+
+  for (i = 0; i < lh->num_buckets; i++) {
+    for (cur = lh->buckets[i]; cur != NULL; cur = next) {
+      const size_t new_bucket = cur->hash % new_num_buckets;
+      next = cur->next;
+      cur->next = new_buckets[new_bucket];
+      new_buckets[new_bucket] = cur;
+    }
+  }
+
+  OPENSSL_free(lh->buckets);
+
+  lh->num_buckets = new_num_buckets;
+  lh->buckets = new_buckets;
+}
+
+// lh_maybe_resize resizes the |buckets| array if needed.
+static void lh_maybe_resize(_LHASH *lh) {
+  size_t avg_chain_length;
+
+  if (lh->callback_depth > 0) {
+    // Don't resize the hash if we are currently iterating over it.
+    return;
+  }
+
+  assert(lh->num_buckets >= kMinNumBuckets);
+  avg_chain_length = lh->num_items / lh->num_buckets;
+
+  if (avg_chain_length > kMaxAverageChainLength) {
+    const size_t new_num_buckets = lh->num_buckets * 2;
+
+    if (new_num_buckets > lh->num_buckets) {
+      lh_rebucket(lh, new_num_buckets);
+    }
+  } else if (avg_chain_length < kMinAverageChainLength &&
+             lh->num_buckets > kMinNumBuckets) {
+    size_t new_num_buckets = lh->num_buckets / 2;
+
+    if (new_num_buckets < kMinNumBuckets) {
+      new_num_buckets = kMinNumBuckets;
+    }
+
+    lh_rebucket(lh, new_num_buckets);
+  }
+}
+
+int lh_insert(_LHASH *lh, void **old_data, void *data,
+              lhash_hash_func_helper call_hash_func,
+              lhash_cmp_func_helper call_cmp_func) {
+  uint32_t hash;
+  LHASH_ITEM **next_ptr, *item;
+
+  *old_data = NULL;
+  next_ptr =
+      get_next_ptr_and_hash(lh, &hash, data, call_hash_func, call_cmp_func);
+
+
+  if (*next_ptr != NULL) {
+    // An element equal to |data| already exists in the hash table. It will be
+    // replaced.
+    *old_data = (*next_ptr)->data;
+    (*next_ptr)->data = data;
+    return 1;
+  }
+
+  // An element equal to |data| doesn't exist in the hash table yet.
+  item = OPENSSL_malloc(sizeof(LHASH_ITEM));
+  if (item == NULL) {
+    return 0;
+  }
+
+  item->data = data;
+  item->hash = hash;
+  item->next = NULL;
+  *next_ptr = item;
+  lh->num_items++;
+  lh_maybe_resize(lh);
+
+  return 1;
+}
+
+void *lh_delete(_LHASH *lh, const void *data,
+                lhash_hash_func_helper call_hash_func,
+                lhash_cmp_func_helper call_cmp_func) {
+  LHASH_ITEM **next_ptr, *item, *ret;
+
+  next_ptr =
+      get_next_ptr_and_hash(lh, NULL, data, call_hash_func, call_cmp_func);
+
+  if (*next_ptr == NULL) {
+    // No such element.
+    return NULL;
+  }
+
+  item = *next_ptr;
+  *next_ptr = item->next;
+  ret = item->data;
+  OPENSSL_free(item);
+
+  lh->num_items--;
+  lh_maybe_resize(lh);
+
+  return ret;
+}
+
+void lh_doall_arg(_LHASH *lh, void (*func)(void *, void *), void *arg) {
+  if (lh == NULL) {
+    return;
+  }
+
+  if (lh->callback_depth < UINT_MAX) {
+    // |callback_depth| is a saturating counter.
+    lh->callback_depth++;
+  }
+
+  for (size_t i = 0; i < lh->num_buckets; i++) {
+    LHASH_ITEM *next;
+    for (LHASH_ITEM *cur = lh->buckets[i]; cur != NULL; cur = next) {
+      next = cur->next;
+      func(cur->data, arg);
+    }
+  }
+
+  if (lh->callback_depth < UINT_MAX) {
+    lh->callback_depth--;
+  }
+
+  // The callback may have added or removed elements and the non-zero value of
+  // |callback_depth| will have suppressed any resizing. Thus any needed
+  // resizing is done here.
+  lh_maybe_resize(lh);
+}
+
+uint32_t lh_strhash(const char *c) {
+  if (c == NULL) {
+    return 0;
+  }
+
+  return OPENSSL_hash32(c, strlen(c));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c.grpc_back
new file mode 100644
index 0000000..98ee60a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/lhash/lhash.c.grpc_back	
@@ -0,0 +1,348 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/lhash.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+// kMinNumBuckets is the minimum size of the buckets array in an |_LHASH|.
+static const size_t kMinNumBuckets = 16;
+
+// kMaxAverageChainLength contains the maximum, average chain length. When the
+// average chain length exceeds this value, the hash table will be resized.
+static const size_t kMaxAverageChainLength = 2;
+static const size_t kMinAverageChainLength = 1;
+
+struct lhash_st {
+  // num_items contains the total number of items in the hash table.
+  size_t num_items;
+  // buckets is an array of |num_buckets| pointers. Each points to the head of
+  // a chain of LHASH_ITEM objects that have the same hash value, mod
+  // |num_buckets|.
+  LHASH_ITEM **buckets;
+  // num_buckets contains the length of |buckets|. This value is always >=
+  // kMinNumBuckets.
+  size_t num_buckets;
+  // callback_depth contains the current depth of |lh_doall| or |lh_doall_arg|
+  // calls. If non-zero then this suppresses resizing of the |buckets| array,
+  // which would otherwise disrupt the iteration.
+  unsigned callback_depth;
+
+  lhash_cmp_func comp;
+  lhash_hash_func hash;
+};
+
+_LHASH *lh_new(lhash_hash_func hash, lhash_cmp_func comp) {
+  _LHASH *ret = OPENSSL_malloc(sizeof(_LHASH));
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(_LHASH));
+
+  ret->num_buckets = kMinNumBuckets;
+  ret->buckets = OPENSSL_malloc(sizeof(LHASH_ITEM *) * ret->num_buckets);
+  if (ret->buckets == NULL) {
+    OPENSSL_free(ret);
+    return NULL;
+  }
+  OPENSSL_memset(ret->buckets, 0, sizeof(LHASH_ITEM *) * ret->num_buckets);
+
+  ret->comp = comp;
+  ret->hash = hash;
+  return ret;
+}
+
+void lh_free(_LHASH *lh) {
+  if (lh == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < lh->num_buckets; i++) {
+    LHASH_ITEM *next;
+    for (LHASH_ITEM *n = lh->buckets[i]; n != NULL; n = next) {
+      next = n->next;
+      OPENSSL_free(n);
+    }
+  }
+
+  OPENSSL_free(lh->buckets);
+  OPENSSL_free(lh);
+}
+
+size_t lh_num_items(const _LHASH *lh) { return lh->num_items; }
+
+// get_next_ptr_and_hash returns a pointer to the pointer that points to the
+// item equal to |data|. In other words, it searches for an item equal to |data|
+// and, if it's at the start of a chain, then it returns a pointer to an
+// element of |lh->buckets|, otherwise it returns a pointer to the |next|
+// element of the previous item in the chain. If an element equal to |data| is
+// not found, it returns a pointer that points to a NULL pointer. If |out_hash|
+// is not NULL, then it also puts the hash value of |data| in |*out_hash|.
+static LHASH_ITEM **get_next_ptr_and_hash(const _LHASH *lh, uint32_t *out_hash,
+                                          const void *data,
+                                          lhash_hash_func_helper call_hash_func,
+                                          lhash_cmp_func_helper call_cmp_func) {
+  const uint32_t hash = call_hash_func(lh->hash, data);
+  if (out_hash != NULL) {
+    *out_hash = hash;
+  }
+
+  LHASH_ITEM **ret = &lh->buckets[hash % lh->num_buckets];
+  for (LHASH_ITEM *cur = *ret; cur != NULL; cur = *ret) {
+    if (call_cmp_func(lh->comp, cur->data, data) == 0) {
+      break;
+    }
+    ret = &cur->next;
+  }
+
+  return ret;
+}
+
+// get_next_ptr_by_key behaves like |get_next_ptr_and_hash| but takes a key
+// which may be a different type from the values stored in |lh|.
+static LHASH_ITEM **get_next_ptr_by_key(const _LHASH *lh, const void *key,
+                                        uint32_t key_hash,
+                                        int (*cmp_key)(const void *key,
+                                                       const void *value)) {
+  LHASH_ITEM **ret = &lh->buckets[key_hash % lh->num_buckets];
+  for (LHASH_ITEM *cur = *ret; cur != NULL; cur = *ret) {
+    if (cmp_key(key, cur->data) == 0) {
+      break;
+    }
+    ret = &cur->next;
+  }
+
+  return ret;
+}
+
+void *lh_retrieve(const _LHASH *lh, const void *data,
+                  lhash_hash_func_helper call_hash_func,
+                  lhash_cmp_func_helper call_cmp_func) {
+  LHASH_ITEM **next_ptr =
+      get_next_ptr_and_hash(lh, NULL, data, call_hash_func, call_cmp_func);
+  return *next_ptr == NULL ? NULL : (*next_ptr)->data;
+}
+
+void *lh_retrieve_key(const _LHASH *lh, const void *key, uint32_t key_hash,
+                      int (*cmp_key)(const void *key, const void *value)) {
+  LHASH_ITEM **next_ptr = get_next_ptr_by_key(lh, key, key_hash, cmp_key);
+  return *next_ptr == NULL ? NULL : (*next_ptr)->data;
+}
+
+// lh_rebucket allocates a new array of |new_num_buckets| pointers and
+// redistributes the existing items into it before making it |lh->buckets| and
+// freeing the old array.
+static void lh_rebucket(_LHASH *lh, const size_t new_num_buckets) {
+  LHASH_ITEM **new_buckets, *cur, *next;
+  size_t i, alloc_size;
+
+  alloc_size = sizeof(LHASH_ITEM *) * new_num_buckets;
+  if (alloc_size / sizeof(LHASH_ITEM*) != new_num_buckets) {
+    return;
+  }
+
+  new_buckets = OPENSSL_malloc(alloc_size);
+  if (new_buckets == NULL) {
+    return;
+  }
+  OPENSSL_memset(new_buckets, 0, alloc_size);
+
+  for (i = 0; i < lh->num_buckets; i++) {
+    for (cur = lh->buckets[i]; cur != NULL; cur = next) {
+      const size_t new_bucket = cur->hash % new_num_buckets;
+      next = cur->next;
+      cur->next = new_buckets[new_bucket];
+      new_buckets[new_bucket] = cur;
+    }
+  }
+
+  OPENSSL_free(lh->buckets);
+
+  lh->num_buckets = new_num_buckets;
+  lh->buckets = new_buckets;
+}
+
+// lh_maybe_resize resizes the |buckets| array if needed.
+static void lh_maybe_resize(_LHASH *lh) {
+  size_t avg_chain_length;
+
+  if (lh->callback_depth > 0) {
+    // Don't resize the hash if we are currently iterating over it.
+    return;
+  }
+
+  assert(lh->num_buckets >= kMinNumBuckets);
+  avg_chain_length = lh->num_items / lh->num_buckets;
+
+  if (avg_chain_length > kMaxAverageChainLength) {
+    const size_t new_num_buckets = lh->num_buckets * 2;
+
+    if (new_num_buckets > lh->num_buckets) {
+      lh_rebucket(lh, new_num_buckets);
+    }
+  } else if (avg_chain_length < kMinAverageChainLength &&
+             lh->num_buckets > kMinNumBuckets) {
+    size_t new_num_buckets = lh->num_buckets / 2;
+
+    if (new_num_buckets < kMinNumBuckets) {
+      new_num_buckets = kMinNumBuckets;
+    }
+
+    lh_rebucket(lh, new_num_buckets);
+  }
+}
+
+int lh_insert(_LHASH *lh, void **old_data, void *data,
+              lhash_hash_func_helper call_hash_func,
+              lhash_cmp_func_helper call_cmp_func) {
+  uint32_t hash;
+  LHASH_ITEM **next_ptr, *item;
+
+  *old_data = NULL;
+  next_ptr =
+      get_next_ptr_and_hash(lh, &hash, data, call_hash_func, call_cmp_func);
+
+
+  if (*next_ptr != NULL) {
+    // An element equal to |data| already exists in the hash table. It will be
+    // replaced.
+    *old_data = (*next_ptr)->data;
+    (*next_ptr)->data = data;
+    return 1;
+  }
+
+  // An element equal to |data| doesn't exist in the hash table yet.
+  item = OPENSSL_malloc(sizeof(LHASH_ITEM));
+  if (item == NULL) {
+    return 0;
+  }
+
+  item->data = data;
+  item->hash = hash;
+  item->next = NULL;
+  *next_ptr = item;
+  lh->num_items++;
+  lh_maybe_resize(lh);
+
+  return 1;
+}
+
+void *lh_delete(_LHASH *lh, const void *data,
+                lhash_hash_func_helper call_hash_func,
+                lhash_cmp_func_helper call_cmp_func) {
+  LHASH_ITEM **next_ptr, *item, *ret;
+
+  next_ptr =
+      get_next_ptr_and_hash(lh, NULL, data, call_hash_func, call_cmp_func);
+
+  if (*next_ptr == NULL) {
+    // No such element.
+    return NULL;
+  }
+
+  item = *next_ptr;
+  *next_ptr = item->next;
+  ret = item->data;
+  OPENSSL_free(item);
+
+  lh->num_items--;
+  lh_maybe_resize(lh);
+
+  return ret;
+}
+
+void lh_doall_arg(_LHASH *lh, void (*func)(void *, void *), void *arg) {
+  if (lh == NULL) {
+    return;
+  }
+
+  if (lh->callback_depth < UINT_MAX) {
+    // |callback_depth| is a saturating counter.
+    lh->callback_depth++;
+  }
+
+  for (size_t i = 0; i < lh->num_buckets; i++) {
+    LHASH_ITEM *next;
+    for (LHASH_ITEM *cur = lh->buckets[i]; cur != NULL; cur = next) {
+      next = cur->next;
+      func(cur->data, arg);
+    }
+  }
+
+  if (lh->callback_depth < UINT_MAX) {
+    lh->callback_depth--;
+  }
+
+  // The callback may have added or removed elements and the non-zero value of
+  // |callback_depth| will have suppressed any resizing. Thus any needed
+  // resizing is done here.
+  lh_maybe_resize(lh);
+}
+
+uint32_t lh_strhash(const char *c) {
+  if (c == NULL) {
+    return 0;
+  }
+
+  return OPENSSL_hash32(c, strlen(c));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c
new file mode 100644
index 0000000..da8eccb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c	
@@ -0,0 +1,342 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/mem.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <openssl_grpc/err.h>
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+
+
+#define OPENSSL_MALLOC_PREFIX 8
+
+#if defined(OPENSSL_ASAN)
+void __asan_poison_memory_region(const volatile void *addr, size_t size);
+void __asan_unpoison_memory_region(const volatile void *addr, size_t size);
+#else
+static void __asan_poison_memory_region(const void *addr, size_t size) {}
+static void __asan_unpoison_memory_region(const void *addr, size_t size) {}
+#endif
+
+// Windows doesn't really support weak symbols as of May 2019, and Clang on
+// Windows will emit strong symbols instead. See
+// https://bugs.llvm.org/show_bug.cgi?id=37598
+#if defined(__GNUC__) || (defined(__clang__) && !defined(_MSC_VER))
+// sdallocx is a sized |free| function. By passing the size (which we happen to
+// always know in BoringSSL), the malloc implementation can save work. We cannot
+// depend on |sdallocx| being available so we declare a wrapper that falls back
+// to |free| as a weak symbol.
+//
+// This will always be safe, but will only be overridden if the malloc
+// implementation is statically linked with BoringSSL. So, if |sdallocx| is
+// provided in, say, libc.so, we still won't use it because that's dynamically
+// linked. This isn't an ideal result, but its helps in some cases.
+void sdallocx(void *ptr, size_t size, int flags);
+
+__attribute((weak, noinline))
+#else
+static
+#endif
+void sdallocx(void *ptr, size_t size, int flags) {
+  free(ptr);
+}
+
+void *OPENSSL_malloc(size_t size) {
+  void *ptr = malloc(size + OPENSSL_MALLOC_PREFIX);
+  if (ptr == NULL) {
+    return NULL;
+  }
+
+  *(size_t *)ptr = size;
+
+  __asan_poison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+  return ((uint8_t *)ptr) + OPENSSL_MALLOC_PREFIX;
+}
+
+void OPENSSL_free(void *orig_ptr) {
+  if (orig_ptr == NULL) {
+    return;
+  }
+
+  void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX;
+  __asan_unpoison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+
+  size_t size = *(size_t *)ptr;
+  OPENSSL_cleanse(ptr, size + OPENSSL_MALLOC_PREFIX);
+  sdallocx(ptr, size + OPENSSL_MALLOC_PREFIX, 0 /* flags */);
+}
+
+void *OPENSSL_realloc(void *orig_ptr, size_t new_size) {
+  if (orig_ptr == NULL) {
+    return OPENSSL_malloc(new_size);
+  }
+
+  void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX;
+  __asan_unpoison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+  size_t old_size = *(size_t *)ptr;
+  __asan_poison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+
+  void *ret = OPENSSL_malloc(new_size);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  size_t to_copy = new_size;
+  if (old_size < to_copy) {
+    to_copy = old_size;
+  }
+
+  memcpy(ret, orig_ptr, to_copy);
+  OPENSSL_free(orig_ptr);
+
+  return ret;
+}
+
+void OPENSSL_cleanse(void *ptr, size_t len) {
+#if defined(OPENSSL_WINDOWS)
+  SecureZeroMemory(ptr, len);
+#else
+  OPENSSL_memset(ptr, 0, len);
+
+#if !defined(OPENSSL_NO_ASM)
+  /* As best as we can tell, this is sufficient to break any optimisations that
+     might try to eliminate "superfluous" memsets. If there's an easy way to
+     detect memset_s, it would be better to use that. */
+  __asm__ __volatile__("" : : "r"(ptr) : "memory");
+#endif
+#endif  // !OPENSSL_NO_ASM
+}
+
+void OPENSSL_clear_free(void *ptr, size_t unused) {
+  OPENSSL_free(ptr);
+}
+
+int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len) {
+  const uint8_t *a = in_a;
+  const uint8_t *b = in_b;
+  uint8_t x = 0;
+
+  for (size_t i = 0; i < len; i++) {
+    x |= a[i] ^ b[i];
+  }
+
+  return x;
+}
+
+uint32_t OPENSSL_hash32(const void *ptr, size_t len) {
+  // These are the FNV-1a parameters for 32 bits.
+  static const uint32_t kPrime = 16777619u;
+  static const uint32_t kOffsetBasis = 2166136261u;
+
+  const uint8_t *in = ptr;
+  uint32_t h = kOffsetBasis;
+
+  for (size_t i = 0; i < len; i++) {
+    h ^= in[i];
+    h *= kPrime;
+  }
+
+  return h;
+}
+
+size_t OPENSSL_strnlen(const char *s, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    if (s[i] == 0) {
+      return i;
+    }
+  }
+
+  return len;
+}
+
+char *OPENSSL_strdup(const char *s) {
+  if (s == NULL) {
+    return NULL;
+  }
+  const size_t len = strlen(s) + 1;
+  char *ret = OPENSSL_malloc(len);
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memcpy(ret, s, len);
+  return ret;
+}
+
+int OPENSSL_tolower(int c) {
+  if (c >= 'A' && c <= 'Z') {
+    return c + ('a' - 'A');
+  }
+  return c;
+}
+
+int OPENSSL_strcasecmp(const char *a, const char *b) {
+  for (size_t i = 0;; i++) {
+    const int aa = OPENSSL_tolower(a[i]);
+    const int bb = OPENSSL_tolower(b[i]);
+
+    if (aa < bb) {
+      return -1;
+    } else if (aa > bb) {
+      return 1;
+    } else if (aa == 0) {
+      return 0;
+    }
+  }
+}
+
+int OPENSSL_strncasecmp(const char *a, const char *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    const int aa = OPENSSL_tolower(a[i]);
+    const int bb = OPENSSL_tolower(b[i]);
+
+    if (aa < bb) {
+      return -1;
+    } else if (aa > bb) {
+      return 1;
+    } else if (aa == 0) {
+      return 0;
+    }
+  }
+
+  return 0;
+}
+
+int BIO_snprintf(char *buf, size_t n, const char *format, ...) {
+  va_list args;
+  va_start(args, format);
+  int ret = BIO_vsnprintf(buf, n, format, args);
+  va_end(args);
+  return ret;
+}
+
+int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) {
+  return vsnprintf(buf, n, format, args);
+}
+
+char *OPENSSL_strndup(const char *str, size_t size) {
+  char *ret;
+  size_t alloc_size;
+
+  if (str == NULL) {
+    return NULL;
+  }
+
+  size = OPENSSL_strnlen(str, size);
+
+  alloc_size = size + 1;
+  if (alloc_size < size) {
+    // overflow
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  ret = OPENSSL_malloc(alloc_size);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(ret, str, size);
+  ret[size] = '\0';
+  return ret;
+}
+
+size_t OPENSSL_strlcpy(char *dst, const char *src, size_t dst_size) {
+  size_t l = 0;
+
+  for (; dst_size > 1 && *src; dst_size--) {
+    *dst++ = *src++;
+    l++;
+  }
+
+  if (dst_size) {
+    *dst = 0;
+  }
+
+  return l + strlen(src);
+}
+
+size_t OPENSSL_strlcat(char *dst, const char *src, size_t dst_size) {
+  size_t l = 0;
+  for (; dst_size > 0 && *dst; dst_size--, dst++) {
+    l++;
+  }
+  return l + OPENSSL_strlcpy(dst, src, dst_size);
+}
+
+void *OPENSSL_memdup(const void *data, size_t size) {
+  if (size == 0) {
+    return NULL;
+  }
+
+  void *ret = OPENSSL_malloc(size);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(ret, data, size);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c.grpc_back
new file mode 100644
index 0000000..7fc5f98
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/mem.c.grpc_back	
@@ -0,0 +1,342 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/mem.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <openssl/err.h>
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include "internal.h"
+
+
+#define OPENSSL_MALLOC_PREFIX 8
+
+#if defined(OPENSSL_ASAN)
+void __asan_poison_memory_region(const volatile void *addr, size_t size);
+void __asan_unpoison_memory_region(const volatile void *addr, size_t size);
+#else
+static void __asan_poison_memory_region(const void *addr, size_t size) {}
+static void __asan_unpoison_memory_region(const void *addr, size_t size) {}
+#endif
+
+// Windows doesn't really support weak symbols as of May 2019, and Clang on
+// Windows will emit strong symbols instead. See
+// https://bugs.llvm.org/show_bug.cgi?id=37598
+#if defined(__GNUC__) || (defined(__clang__) && !defined(_MSC_VER))
+// sdallocx is a sized |free| function. By passing the size (which we happen to
+// always know in BoringSSL), the malloc implementation can save work. We cannot
+// depend on |sdallocx| being available so we declare a wrapper that falls back
+// to |free| as a weak symbol.
+//
+// This will always be safe, but will only be overridden if the malloc
+// implementation is statically linked with BoringSSL. So, if |sdallocx| is
+// provided in, say, libc.so, we still won't use it because that's dynamically
+// linked. This isn't an ideal result, but its helps in some cases.
+void sdallocx(void *ptr, size_t size, int flags);
+
+__attribute((weak, noinline))
+#else
+static
+#endif
+void sdallocx(void *ptr, size_t size, int flags) {
+  free(ptr);
+}
+
+void *OPENSSL_malloc(size_t size) {
+  void *ptr = malloc(size + OPENSSL_MALLOC_PREFIX);
+  if (ptr == NULL) {
+    return NULL;
+  }
+
+  *(size_t *)ptr = size;
+
+  __asan_poison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+  return ((uint8_t *)ptr) + OPENSSL_MALLOC_PREFIX;
+}
+
+void OPENSSL_free(void *orig_ptr) {
+  if (orig_ptr == NULL) {
+    return;
+  }
+
+  void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX;
+  __asan_unpoison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+
+  size_t size = *(size_t *)ptr;
+  OPENSSL_cleanse(ptr, size + OPENSSL_MALLOC_PREFIX);
+  sdallocx(ptr, size + OPENSSL_MALLOC_PREFIX, 0 /* flags */);
+}
+
+void *OPENSSL_realloc(void *orig_ptr, size_t new_size) {
+  if (orig_ptr == NULL) {
+    return OPENSSL_malloc(new_size);
+  }
+
+  void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX;
+  __asan_unpoison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+  size_t old_size = *(size_t *)ptr;
+  __asan_poison_memory_region(ptr, OPENSSL_MALLOC_PREFIX);
+
+  void *ret = OPENSSL_malloc(new_size);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  size_t to_copy = new_size;
+  if (old_size < to_copy) {
+    to_copy = old_size;
+  }
+
+  memcpy(ret, orig_ptr, to_copy);
+  OPENSSL_free(orig_ptr);
+
+  return ret;
+}
+
+void OPENSSL_cleanse(void *ptr, size_t len) {
+#if defined(OPENSSL_WINDOWS)
+  SecureZeroMemory(ptr, len);
+#else
+  OPENSSL_memset(ptr, 0, len);
+
+#if !defined(OPENSSL_NO_ASM)
+  /* As best as we can tell, this is sufficient to break any optimisations that
+     might try to eliminate "superfluous" memsets. If there's an easy way to
+     detect memset_s, it would be better to use that. */
+  __asm__ __volatile__("" : : "r"(ptr) : "memory");
+#endif
+#endif  // !OPENSSL_NO_ASM
+}
+
+void OPENSSL_clear_free(void *ptr, size_t unused) {
+  OPENSSL_free(ptr);
+}
+
+int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len) {
+  const uint8_t *a = in_a;
+  const uint8_t *b = in_b;
+  uint8_t x = 0;
+
+  for (size_t i = 0; i < len; i++) {
+    x |= a[i] ^ b[i];
+  }
+
+  return x;
+}
+
+uint32_t OPENSSL_hash32(const void *ptr, size_t len) {
+  // These are the FNV-1a parameters for 32 bits.
+  static const uint32_t kPrime = 16777619u;
+  static const uint32_t kOffsetBasis = 2166136261u;
+
+  const uint8_t *in = ptr;
+  uint32_t h = kOffsetBasis;
+
+  for (size_t i = 0; i < len; i++) {
+    h ^= in[i];
+    h *= kPrime;
+  }
+
+  return h;
+}
+
+size_t OPENSSL_strnlen(const char *s, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    if (s[i] == 0) {
+      return i;
+    }
+  }
+
+  return len;
+}
+
+char *OPENSSL_strdup(const char *s) {
+  if (s == NULL) {
+    return NULL;
+  }
+  const size_t len = strlen(s) + 1;
+  char *ret = OPENSSL_malloc(len);
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memcpy(ret, s, len);
+  return ret;
+}
+
+int OPENSSL_tolower(int c) {
+  if (c >= 'A' && c <= 'Z') {
+    return c + ('a' - 'A');
+  }
+  return c;
+}
+
+int OPENSSL_strcasecmp(const char *a, const char *b) {
+  for (size_t i = 0;; i++) {
+    const int aa = OPENSSL_tolower(a[i]);
+    const int bb = OPENSSL_tolower(b[i]);
+
+    if (aa < bb) {
+      return -1;
+    } else if (aa > bb) {
+      return 1;
+    } else if (aa == 0) {
+      return 0;
+    }
+  }
+}
+
+int OPENSSL_strncasecmp(const char *a, const char *b, size_t n) {
+  for (size_t i = 0; i < n; i++) {
+    const int aa = OPENSSL_tolower(a[i]);
+    const int bb = OPENSSL_tolower(b[i]);
+
+    if (aa < bb) {
+      return -1;
+    } else if (aa > bb) {
+      return 1;
+    } else if (aa == 0) {
+      return 0;
+    }
+  }
+
+  return 0;
+}
+
+int BIO_snprintf(char *buf, size_t n, const char *format, ...) {
+  va_list args;
+  va_start(args, format);
+  int ret = BIO_vsnprintf(buf, n, format, args);
+  va_end(args);
+  return ret;
+}
+
+int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) {
+  return vsnprintf(buf, n, format, args);
+}
+
+char *OPENSSL_strndup(const char *str, size_t size) {
+  char *ret;
+  size_t alloc_size;
+
+  if (str == NULL) {
+    return NULL;
+  }
+
+  size = OPENSSL_strnlen(str, size);
+
+  alloc_size = size + 1;
+  if (alloc_size < size) {
+    // overflow
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+  ret = OPENSSL_malloc(alloc_size);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(ret, str, size);
+  ret[size] = '\0';
+  return ret;
+}
+
+size_t OPENSSL_strlcpy(char *dst, const char *src, size_t dst_size) {
+  size_t l = 0;
+
+  for (; dst_size > 1 && *src; dst_size--) {
+    *dst++ = *src++;
+    l++;
+  }
+
+  if (dst_size) {
+    *dst = 0;
+  }
+
+  return l + strlen(src);
+}
+
+size_t OPENSSL_strlcat(char *dst, const char *src, size_t dst_size) {
+  size_t l = 0;
+  for (; dst_size > 0 && *dst; dst_size--, dst++) {
+    l++;
+  }
+  return l + OPENSSL_strlcpy(dst, src, dst_size);
+}
+
+void *OPENSSL_memdup(const void *data, size_t size) {
+  if (size == 0) {
+    return NULL;
+  }
+
+  void *ret = OPENSSL_malloc(size);
+  if (ret == NULL) {
+    OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(ret, data, size);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c
new file mode 100644
index 0000000..ccb8425
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c	
@@ -0,0 +1,549 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/obj.h>
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "obj_dat.h"
+#include "../internal.h"
+
+
+DEFINE_LHASH_OF(ASN1_OBJECT)
+
+static struct CRYPTO_STATIC_MUTEX global_added_lock = CRYPTO_STATIC_MUTEX_INIT;
+// These globals are protected by |global_added_lock|.
+static LHASH_OF(ASN1_OBJECT) *global_added_by_data = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_nid = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_short_name = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_long_name = NULL;
+
+static struct CRYPTO_STATIC_MUTEX global_next_nid_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+static unsigned global_next_nid = NUM_NID;
+
+static int obj_next_nid(void) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_next_nid_lock);
+  ret = global_next_nid++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_next_nid_lock);
+
+  return ret;
+}
+
+ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o) {
+  ASN1_OBJECT *r;
+  unsigned char *data = NULL;
+  char *sn = NULL, *ln = NULL;
+
+  if (o == NULL) {
+    return NULL;
+  }
+
+  if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
+    // TODO(fork): this is a little dangerous.
+    return (ASN1_OBJECT *)o;
+  }
+
+  r = ASN1_OBJECT_new();
+  if (r == NULL) {
+    OPENSSL_PUT_ERROR(OBJ, ERR_R_ASN1_LIB);
+    return NULL;
+  }
+  r->ln = r->sn = NULL;
+
+  data = OPENSSL_malloc(o->length);
+  if (data == NULL) {
+    goto err;
+  }
+  if (o->data != NULL) {
+    OPENSSL_memcpy(data, o->data, o->length);
+  }
+
+  // once data is attached to an object, it remains const
+  r->data = data;
+  r->length = o->length;
+  r->nid = o->nid;
+
+  if (o->ln != NULL) {
+    ln = OPENSSL_strdup(o->ln);
+    if (ln == NULL) {
+      goto err;
+    }
+  }
+
+  if (o->sn != NULL) {
+    sn = OPENSSL_strdup(o->sn);
+    if (sn == NULL) {
+      goto err;
+    }
+  }
+
+  r->sn = sn;
+  r->ln = ln;
+
+  r->flags =
+      o->flags | (ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+                  ASN1_OBJECT_FLAG_DYNAMIC_DATA);
+  return r;
+
+err:
+  OPENSSL_PUT_ERROR(OBJ, ERR_R_MALLOC_FAILURE);
+  OPENSSL_free(ln);
+  OPENSSL_free(sn);
+  OPENSSL_free(data);
+  OPENSSL_free(r);
+  return NULL;
+}
+
+int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  int ret;
+
+  ret = a->length - b->length;
+  if (ret) {
+    return ret;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj) {
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->data;
+}
+
+size_t OBJ_length(const ASN1_OBJECT *obj) {
+  if (obj == NULL || obj->length < 0) {
+    return 0;
+  }
+
+  return (size_t)obj->length;
+}
+
+// obj_cmp is called to search the kNIDsInOIDOrder array. The |key| argument is
+// an |ASN1_OBJECT|* that we're looking for and |element| is a pointer to an
+// unsigned int in the array.
+static int obj_cmp(const void *key, const void *element) {
+  uint16_t nid = *((const uint16_t *)element);
+  const ASN1_OBJECT *a = key;
+  const ASN1_OBJECT *b = &kObjects[nid];
+
+  if (a->length < b->length) {
+    return -1;
+  } else if (a->length > b->length) {
+    return 1;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+int OBJ_obj2nid(const ASN1_OBJECT *obj) {
+  if (obj == NULL) {
+    return NID_undef;
+  }
+
+  if (obj->nid != 0) {
+    return obj->nid;
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_data != NULL) {
+    ASN1_OBJECT *match;
+
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_data, obj);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr =
+      bsearch(obj, kNIDsInOIDOrder, OPENSSL_ARRAY_SIZE(kNIDsInOIDOrder),
+              sizeof(kNIDsInOIDOrder[0]), obj_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+int OBJ_cbs2nid(const CBS *cbs) {
+  if (CBS_len(cbs) > INT_MAX) {
+    return NID_undef;
+  }
+
+  ASN1_OBJECT obj;
+  OPENSSL_memset(&obj, 0, sizeof(obj));
+  obj.data = CBS_data(cbs);
+  obj.length = (int)CBS_len(cbs);
+
+  return OBJ_obj2nid(&obj);
+}
+
+// short_name_cmp is called to search the kNIDsInShortNameOrder array. The
+// |key| argument is name that we're looking for and |element| is a pointer to
+// an unsigned int in the array.
+static int short_name_cmp(const void *key, const void *element) {
+  const char *name = (const char *)key;
+  uint16_t nid = *((const uint16_t *)element);
+
+  return strcmp(name, kObjects[nid].sn);
+}
+
+int OBJ_sn2nid(const char *short_name) {
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_short_name != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.sn = short_name;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_short_name, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr =
+      bsearch(short_name, kNIDsInShortNameOrder,
+              OPENSSL_ARRAY_SIZE(kNIDsInShortNameOrder),
+              sizeof(kNIDsInShortNameOrder[0]), short_name_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+// long_name_cmp is called to search the kNIDsInLongNameOrder array. The
+// |key| argument is name that we're looking for and |element| is a pointer to
+// an unsigned int in the array.
+static int long_name_cmp(const void *key, const void *element) {
+  const char *name = (const char *)key;
+  uint16_t nid = *((const uint16_t *)element);
+
+  return strcmp(name, kObjects[nid].ln);
+}
+
+int OBJ_ln2nid(const char *long_name) {
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_long_name != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.ln = long_name;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_long_name, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr = bsearch(
+      long_name, kNIDsInLongNameOrder, OPENSSL_ARRAY_SIZE(kNIDsInLongNameOrder),
+      sizeof(kNIDsInLongNameOrder[0]), long_name_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+int OBJ_txt2nid(const char *s) {
+  ASN1_OBJECT *obj;
+  int nid;
+
+  obj = OBJ_txt2obj(s, 0 /* search names */);
+  nid = OBJ_obj2nid(obj);
+  ASN1_OBJECT_free(obj);
+  return nid;
+}
+
+OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  CBB oid;
+
+  if (obj == NULL ||
+      !CBB_add_asn1(out, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, obj->data, obj->length) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+const ASN1_OBJECT *OBJ_nid2obj(int nid) {
+  if (nid >= 0 && nid < NUM_NID) {
+    if (nid != NID_undef && kObjects[nid].nid == NID_undef) {
+      goto err;
+    }
+    return &kObjects[nid];
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_nid != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.nid = nid;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_nid, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+err:
+  OPENSSL_PUT_ERROR(OBJ, OBJ_R_UNKNOWN_NID);
+  return NULL;
+}
+
+const char *OBJ_nid2sn(int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->sn;
+}
+
+const char *OBJ_nid2ln(int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->ln;
+}
+
+static ASN1_OBJECT *create_object_with_text_oid(int (*get_nid)(void),
+                                                const char *oid,
+                                                const char *short_name,
+                                                const char *long_name) {
+  uint8_t *buf;
+  size_t len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 32) ||
+      !CBB_add_asn1_oid_from_text(&cbb, oid, strlen(oid)) ||
+      !CBB_finish(&cbb, &buf, &len)) {
+    OPENSSL_PUT_ERROR(OBJ, OBJ_R_INVALID_OID_STRING);
+    CBB_cleanup(&cbb);
+    return NULL;
+  }
+
+  ASN1_OBJECT *ret = ASN1_OBJECT_create(get_nid ? get_nid() : NID_undef, buf,
+                                        len, short_name, long_name);
+  OPENSSL_free(buf);
+  return ret;
+}
+
+ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names) {
+  if (!dont_search_names) {
+    int nid = OBJ_sn2nid(s);
+    if (nid == NID_undef) {
+      nid = OBJ_ln2nid(s);
+    }
+
+    if (nid != NID_undef) {
+      return (ASN1_OBJECT*) OBJ_nid2obj(nid);
+    }
+  }
+
+  return create_object_with_text_oid(NULL, s, NULL, NULL);
+}
+
+static int strlcpy_int(char *dst, const char *src, int dst_size) {
+  size_t ret = OPENSSL_strlcpy(dst, src, dst_size < 0 ? 0 : (size_t)dst_size);
+  if (ret > INT_MAX) {
+    OPENSSL_PUT_ERROR(OBJ, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return (int)ret;
+}
+
+int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+                int always_return_oid) {
+  // Python depends on the empty OID successfully encoding as the empty
+  // string.
+  if (obj == NULL || obj->length == 0) {
+    return strlcpy_int(out, "", out_len);
+  }
+
+  if (!always_return_oid) {
+    int nid = OBJ_obj2nid(obj);
+    if (nid != NID_undef) {
+      const char *name = OBJ_nid2ln(nid);
+      if (name == NULL) {
+        name = OBJ_nid2sn(nid);
+      }
+      if (name != NULL) {
+        return strlcpy_int(out, name, out_len);
+      }
+    }
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, obj->data, obj->length);
+  char *txt = CBS_asn1_oid_to_text(&cbs);
+  if (txt == NULL) {
+    if (out_len > 0) {
+      out[0] = '\0';
+    }
+    return -1;
+  }
+
+  int ret = strlcpy_int(out, txt, out_len);
+  OPENSSL_free(txt);
+  return ret;
+}
+
+static uint32_t hash_nid(const ASN1_OBJECT *obj) {
+  return obj->nid;
+}
+
+static int cmp_nid(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return a->nid - b->nid;
+}
+
+static uint32_t hash_data(const ASN1_OBJECT *obj) {
+  return OPENSSL_hash32(obj->data, obj->length);
+}
+
+static int cmp_data(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  int i = a->length - b->length;
+  if (i) {
+    return i;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+static uint32_t hash_short_name(const ASN1_OBJECT *obj) {
+  return lh_strhash(obj->sn);
+}
+
+static int cmp_short_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return strcmp(a->sn, b->sn);
+}
+
+static uint32_t hash_long_name(const ASN1_OBJECT *obj) {
+  return lh_strhash(obj->ln);
+}
+
+static int cmp_long_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return strcmp(a->ln, b->ln);
+}
+
+// obj_add_object inserts |obj| into the various global hashes for run-time
+// added objects. It returns one on success or zero otherwise.
+static int obj_add_object(ASN1_OBJECT *obj) {
+  int ok;
+  ASN1_OBJECT *old_object;
+
+  obj->flags &= ~(ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+                  ASN1_OBJECT_FLAG_DYNAMIC_DATA);
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_added_lock);
+  if (global_added_by_nid == NULL) {
+    global_added_by_nid = lh_ASN1_OBJECT_new(hash_nid, cmp_nid);
+    global_added_by_data = lh_ASN1_OBJECT_new(hash_data, cmp_data);
+    global_added_by_short_name = lh_ASN1_OBJECT_new(hash_short_name, cmp_short_name);
+    global_added_by_long_name = lh_ASN1_OBJECT_new(hash_long_name, cmp_long_name);
+  }
+
+  // We don't pay attention to |old_object| (which contains any previous object
+  // that was evicted from the hashes) because we don't have a reference count
+  // on ASN1_OBJECT values. Also, we should never have duplicates nids and so
+  // should always have objects in |global_added_by_nid|.
+
+  ok = lh_ASN1_OBJECT_insert(global_added_by_nid, &old_object, obj);
+  if (obj->length != 0 && obj->data != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_data, &old_object, obj);
+  }
+  if (obj->sn != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_short_name, &old_object, obj);
+  }
+  if (obj->ln != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_long_name, &old_object, obj);
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_added_lock);
+
+  return ok;
+}
+
+int OBJ_create(const char *oid, const char *short_name, const char *long_name) {
+  ASN1_OBJECT *op =
+      create_object_with_text_oid(obj_next_nid, oid, short_name, long_name);
+  if (op == NULL ||
+      !obj_add_object(op)) {
+    return NID_undef;
+  }
+  return op->nid;
+}
+
+void OBJ_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c.grpc_back
new file mode 100644
index 0000000..3bf1abf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj.c.grpc_back	
@@ -0,0 +1,549 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/obj.h>
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "obj_dat.h"
+#include "../internal.h"
+
+
+DEFINE_LHASH_OF(ASN1_OBJECT)
+
+static struct CRYPTO_STATIC_MUTEX global_added_lock = CRYPTO_STATIC_MUTEX_INIT;
+// These globals are protected by |global_added_lock|.
+static LHASH_OF(ASN1_OBJECT) *global_added_by_data = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_nid = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_short_name = NULL;
+static LHASH_OF(ASN1_OBJECT) *global_added_by_long_name = NULL;
+
+static struct CRYPTO_STATIC_MUTEX global_next_nid_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+static unsigned global_next_nid = NUM_NID;
+
+static int obj_next_nid(void) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_next_nid_lock);
+  ret = global_next_nid++;
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_next_nid_lock);
+
+  return ret;
+}
+
+ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o) {
+  ASN1_OBJECT *r;
+  unsigned char *data = NULL;
+  char *sn = NULL, *ln = NULL;
+
+  if (o == NULL) {
+    return NULL;
+  }
+
+  if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
+    // TODO(fork): this is a little dangerous.
+    return (ASN1_OBJECT *)o;
+  }
+
+  r = ASN1_OBJECT_new();
+  if (r == NULL) {
+    OPENSSL_PUT_ERROR(OBJ, ERR_R_ASN1_LIB);
+    return NULL;
+  }
+  r->ln = r->sn = NULL;
+
+  data = OPENSSL_malloc(o->length);
+  if (data == NULL) {
+    goto err;
+  }
+  if (o->data != NULL) {
+    OPENSSL_memcpy(data, o->data, o->length);
+  }
+
+  // once data is attached to an object, it remains const
+  r->data = data;
+  r->length = o->length;
+  r->nid = o->nid;
+
+  if (o->ln != NULL) {
+    ln = OPENSSL_strdup(o->ln);
+    if (ln == NULL) {
+      goto err;
+    }
+  }
+
+  if (o->sn != NULL) {
+    sn = OPENSSL_strdup(o->sn);
+    if (sn == NULL) {
+      goto err;
+    }
+  }
+
+  r->sn = sn;
+  r->ln = ln;
+
+  r->flags =
+      o->flags | (ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+                  ASN1_OBJECT_FLAG_DYNAMIC_DATA);
+  return r;
+
+err:
+  OPENSSL_PUT_ERROR(OBJ, ERR_R_MALLOC_FAILURE);
+  OPENSSL_free(ln);
+  OPENSSL_free(sn);
+  OPENSSL_free(data);
+  OPENSSL_free(r);
+  return NULL;
+}
+
+int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  int ret;
+
+  ret = a->length - b->length;
+  if (ret) {
+    return ret;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj) {
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->data;
+}
+
+size_t OBJ_length(const ASN1_OBJECT *obj) {
+  if (obj == NULL || obj->length < 0) {
+    return 0;
+  }
+
+  return (size_t)obj->length;
+}
+
+// obj_cmp is called to search the kNIDsInOIDOrder array. The |key| argument is
+// an |ASN1_OBJECT|* that we're looking for and |element| is a pointer to an
+// unsigned int in the array.
+static int obj_cmp(const void *key, const void *element) {
+  uint16_t nid = *((const uint16_t *)element);
+  const ASN1_OBJECT *a = key;
+  const ASN1_OBJECT *b = &kObjects[nid];
+
+  if (a->length < b->length) {
+    return -1;
+  } else if (a->length > b->length) {
+    return 1;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+int OBJ_obj2nid(const ASN1_OBJECT *obj) {
+  if (obj == NULL) {
+    return NID_undef;
+  }
+
+  if (obj->nid != 0) {
+    return obj->nid;
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_data != NULL) {
+    ASN1_OBJECT *match;
+
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_data, obj);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr =
+      bsearch(obj, kNIDsInOIDOrder, OPENSSL_ARRAY_SIZE(kNIDsInOIDOrder),
+              sizeof(kNIDsInOIDOrder[0]), obj_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+int OBJ_cbs2nid(const CBS *cbs) {
+  if (CBS_len(cbs) > INT_MAX) {
+    return NID_undef;
+  }
+
+  ASN1_OBJECT obj;
+  OPENSSL_memset(&obj, 0, sizeof(obj));
+  obj.data = CBS_data(cbs);
+  obj.length = (int)CBS_len(cbs);
+
+  return OBJ_obj2nid(&obj);
+}
+
+// short_name_cmp is called to search the kNIDsInShortNameOrder array. The
+// |key| argument is name that we're looking for and |element| is a pointer to
+// an unsigned int in the array.
+static int short_name_cmp(const void *key, const void *element) {
+  const char *name = (const char *)key;
+  uint16_t nid = *((const uint16_t *)element);
+
+  return strcmp(name, kObjects[nid].sn);
+}
+
+int OBJ_sn2nid(const char *short_name) {
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_short_name != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.sn = short_name;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_short_name, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr =
+      bsearch(short_name, kNIDsInShortNameOrder,
+              OPENSSL_ARRAY_SIZE(kNIDsInShortNameOrder),
+              sizeof(kNIDsInShortNameOrder[0]), short_name_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+// long_name_cmp is called to search the kNIDsInLongNameOrder array. The
+// |key| argument is name that we're looking for and |element| is a pointer to
+// an unsigned int in the array.
+static int long_name_cmp(const void *key, const void *element) {
+  const char *name = (const char *)key;
+  uint16_t nid = *((const uint16_t *)element);
+
+  return strcmp(name, kObjects[nid].ln);
+}
+
+int OBJ_ln2nid(const char *long_name) {
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_long_name != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.ln = long_name;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_long_name, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match->nid;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+  const uint16_t *nid_ptr = bsearch(
+      long_name, kNIDsInLongNameOrder, OPENSSL_ARRAY_SIZE(kNIDsInLongNameOrder),
+      sizeof(kNIDsInLongNameOrder[0]), long_name_cmp);
+  if (nid_ptr == NULL) {
+    return NID_undef;
+  }
+
+  return kObjects[*nid_ptr].nid;
+}
+
+int OBJ_txt2nid(const char *s) {
+  ASN1_OBJECT *obj;
+  int nid;
+
+  obj = OBJ_txt2obj(s, 0 /* search names */);
+  nid = OBJ_obj2nid(obj);
+  ASN1_OBJECT_free(obj);
+  return nid;
+}
+
+OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  CBB oid;
+
+  if (obj == NULL ||
+      !CBB_add_asn1(out, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, obj->data, obj->length) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+const ASN1_OBJECT *OBJ_nid2obj(int nid) {
+  if (nid >= 0 && nid < NUM_NID) {
+    if (nid != NID_undef && kObjects[nid].nid == NID_undef) {
+      goto err;
+    }
+    return &kObjects[nid];
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_read(&global_added_lock);
+  if (global_added_by_nid != NULL) {
+    ASN1_OBJECT *match, template;
+
+    template.nid = nid;
+    match = lh_ASN1_OBJECT_retrieve(global_added_by_nid, &template);
+    if (match != NULL) {
+      CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+      return match;
+    }
+  }
+  CRYPTO_STATIC_MUTEX_unlock_read(&global_added_lock);
+
+err:
+  OPENSSL_PUT_ERROR(OBJ, OBJ_R_UNKNOWN_NID);
+  return NULL;
+}
+
+const char *OBJ_nid2sn(int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->sn;
+}
+
+const char *OBJ_nid2ln(int nid) {
+  const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+  if (obj == NULL) {
+    return NULL;
+  }
+
+  return obj->ln;
+}
+
+static ASN1_OBJECT *create_object_with_text_oid(int (*get_nid)(void),
+                                                const char *oid,
+                                                const char *short_name,
+                                                const char *long_name) {
+  uint8_t *buf;
+  size_t len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 32) ||
+      !CBB_add_asn1_oid_from_text(&cbb, oid, strlen(oid)) ||
+      !CBB_finish(&cbb, &buf, &len)) {
+    OPENSSL_PUT_ERROR(OBJ, OBJ_R_INVALID_OID_STRING);
+    CBB_cleanup(&cbb);
+    return NULL;
+  }
+
+  ASN1_OBJECT *ret = ASN1_OBJECT_create(get_nid ? get_nid() : NID_undef, buf,
+                                        len, short_name, long_name);
+  OPENSSL_free(buf);
+  return ret;
+}
+
+ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names) {
+  if (!dont_search_names) {
+    int nid = OBJ_sn2nid(s);
+    if (nid == NID_undef) {
+      nid = OBJ_ln2nid(s);
+    }
+
+    if (nid != NID_undef) {
+      return (ASN1_OBJECT*) OBJ_nid2obj(nid);
+    }
+  }
+
+  return create_object_with_text_oid(NULL, s, NULL, NULL);
+}
+
+static int strlcpy_int(char *dst, const char *src, int dst_size) {
+  size_t ret = OPENSSL_strlcpy(dst, src, dst_size < 0 ? 0 : (size_t)dst_size);
+  if (ret > INT_MAX) {
+    OPENSSL_PUT_ERROR(OBJ, ERR_R_OVERFLOW);
+    return -1;
+  }
+  return (int)ret;
+}
+
+int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+                int always_return_oid) {
+  // Python depends on the empty OID successfully encoding as the empty
+  // string.
+  if (obj == NULL || obj->length == 0) {
+    return strlcpy_int(out, "", out_len);
+  }
+
+  if (!always_return_oid) {
+    int nid = OBJ_obj2nid(obj);
+    if (nid != NID_undef) {
+      const char *name = OBJ_nid2ln(nid);
+      if (name == NULL) {
+        name = OBJ_nid2sn(nid);
+      }
+      if (name != NULL) {
+        return strlcpy_int(out, name, out_len);
+      }
+    }
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, obj->data, obj->length);
+  char *txt = CBS_asn1_oid_to_text(&cbs);
+  if (txt == NULL) {
+    if (out_len > 0) {
+      out[0] = '\0';
+    }
+    return -1;
+  }
+
+  int ret = strlcpy_int(out, txt, out_len);
+  OPENSSL_free(txt);
+  return ret;
+}
+
+static uint32_t hash_nid(const ASN1_OBJECT *obj) {
+  return obj->nid;
+}
+
+static int cmp_nid(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return a->nid - b->nid;
+}
+
+static uint32_t hash_data(const ASN1_OBJECT *obj) {
+  return OPENSSL_hash32(obj->data, obj->length);
+}
+
+static int cmp_data(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  int i = a->length - b->length;
+  if (i) {
+    return i;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->length);
+}
+
+static uint32_t hash_short_name(const ASN1_OBJECT *obj) {
+  return lh_strhash(obj->sn);
+}
+
+static int cmp_short_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return strcmp(a->sn, b->sn);
+}
+
+static uint32_t hash_long_name(const ASN1_OBJECT *obj) {
+  return lh_strhash(obj->ln);
+}
+
+static int cmp_long_name(const ASN1_OBJECT *a, const ASN1_OBJECT *b) {
+  return strcmp(a->ln, b->ln);
+}
+
+// obj_add_object inserts |obj| into the various global hashes for run-time
+// added objects. It returns one on success or zero otherwise.
+static int obj_add_object(ASN1_OBJECT *obj) {
+  int ok;
+  ASN1_OBJECT *old_object;
+
+  obj->flags &= ~(ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
+                  ASN1_OBJECT_FLAG_DYNAMIC_DATA);
+
+  CRYPTO_STATIC_MUTEX_lock_write(&global_added_lock);
+  if (global_added_by_nid == NULL) {
+    global_added_by_nid = lh_ASN1_OBJECT_new(hash_nid, cmp_nid);
+    global_added_by_data = lh_ASN1_OBJECT_new(hash_data, cmp_data);
+    global_added_by_short_name = lh_ASN1_OBJECT_new(hash_short_name, cmp_short_name);
+    global_added_by_long_name = lh_ASN1_OBJECT_new(hash_long_name, cmp_long_name);
+  }
+
+  // We don't pay attention to |old_object| (which contains any previous object
+  // that was evicted from the hashes) because we don't have a reference count
+  // on ASN1_OBJECT values. Also, we should never have duplicates nids and so
+  // should always have objects in |global_added_by_nid|.
+
+  ok = lh_ASN1_OBJECT_insert(global_added_by_nid, &old_object, obj);
+  if (obj->length != 0 && obj->data != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_data, &old_object, obj);
+  }
+  if (obj->sn != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_short_name, &old_object, obj);
+  }
+  if (obj->ln != NULL) {
+    ok &= lh_ASN1_OBJECT_insert(global_added_by_long_name, &old_object, obj);
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(&global_added_lock);
+
+  return ok;
+}
+
+int OBJ_create(const char *oid, const char *short_name, const char *long_name) {
+  ASN1_OBJECT *op =
+      create_object_with_text_oid(obj_next_nid, oid, short_name, long_name);
+  if (op == NULL ||
+      !obj_add_object(op)) {
+    return NID_undef;
+  }
+  return op->nid;
+}
+
+void OBJ_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h
new file mode 100644
index 0000000..888ea67
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h	
@@ -0,0 +1,11571 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+/* This file is generated by crypto/obj/objects.go. */
+
+
+#define NUM_NID 962
+
+static const uint8_t kObjectData[] = {
+    /* NID_rsadsi */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    /* NID_pkcs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    /* NID_md2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x02,
+    /* NID_md5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x05,
+    /* NID_rc4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x04,
+    /* NID_rsaEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_md2WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_md5WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_pbeWithMD2AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x01,
+    /* NID_pbeWithMD5AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x03,
+    /* NID_X500 */
+    0x55,
+    /* NID_X509 */
+    0x55,
+    0x04,
+    /* NID_commonName */
+    0x55,
+    0x04,
+    0x03,
+    /* NID_countryName */
+    0x55,
+    0x04,
+    0x06,
+    /* NID_localityName */
+    0x55,
+    0x04,
+    0x07,
+    /* NID_stateOrProvinceName */
+    0x55,
+    0x04,
+    0x08,
+    /* NID_organizationName */
+    0x55,
+    0x04,
+    0x0a,
+    /* NID_organizationalUnitName */
+    0x55,
+    0x04,
+    0x0b,
+    /* NID_rsa */
+    0x55,
+    0x08,
+    0x01,
+    0x01,
+    /* NID_pkcs7 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    /* NID_pkcs7_data */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x01,
+    /* NID_pkcs7_signed */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x02,
+    /* NID_pkcs7_enveloped */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x03,
+    /* NID_pkcs7_signedAndEnveloped */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x04,
+    /* NID_pkcs7_digest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x05,
+    /* NID_pkcs7_encrypted */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x06,
+    /* NID_pkcs3 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x03,
+    /* NID_dhKeyAgreement */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x03,
+    0x01,
+    /* NID_des_ecb */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x06,
+    /* NID_des_cfb64 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x09,
+    /* NID_des_cbc */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x07,
+    /* NID_des_ede_ecb */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x11,
+    /* NID_idea_cbc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x81,
+    0x3c,
+    0x07,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_rc2_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x02,
+    /* NID_sha */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x12,
+    /* NID_shaWithRSAEncryption */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0f,
+    /* NID_des_ede3_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x07,
+    /* NID_des_ofb64 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x08,
+    /* NID_pkcs9 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    /* NID_pkcs9_emailAddress */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x01,
+    /* NID_pkcs9_unstructuredName */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x02,
+    /* NID_pkcs9_contentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x03,
+    /* NID_pkcs9_messageDigest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x04,
+    /* NID_pkcs9_signingTime */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x05,
+    /* NID_pkcs9_countersignature */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x06,
+    /* NID_pkcs9_challengePassword */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x07,
+    /* NID_pkcs9_unstructuredAddress */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x08,
+    /* NID_pkcs9_extCertAttributes */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x09,
+    /* NID_netscape */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    /* NID_netscape_cert_extension */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    /* NID_netscape_data_type */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x02,
+    /* NID_sha1 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1a,
+    /* NID_sha1WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x05,
+    /* NID_dsaWithSHA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0d,
+    /* NID_dsa_2 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0c,
+    /* NID_pbeWithSHA1AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0b,
+    /* NID_id_pbkdf2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0c,
+    /* NID_dsaWithSHA1_2 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1b,
+    /* NID_netscape_cert_type */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x01,
+    /* NID_netscape_base_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x02,
+    /* NID_netscape_revocation_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x03,
+    /* NID_netscape_ca_revocation_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x04,
+    /* NID_netscape_renewal_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x07,
+    /* NID_netscape_ca_policy_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x08,
+    /* NID_netscape_ssl_server_name */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x0c,
+    /* NID_netscape_comment */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x0d,
+    /* NID_netscape_cert_sequence */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x02,
+    0x05,
+    /* NID_id_ce */
+    0x55,
+    0x1d,
+    /* NID_subject_key_identifier */
+    0x55,
+    0x1d,
+    0x0e,
+    /* NID_key_usage */
+    0x55,
+    0x1d,
+    0x0f,
+    /* NID_private_key_usage_period */
+    0x55,
+    0x1d,
+    0x10,
+    /* NID_subject_alt_name */
+    0x55,
+    0x1d,
+    0x11,
+    /* NID_issuer_alt_name */
+    0x55,
+    0x1d,
+    0x12,
+    /* NID_basic_constraints */
+    0x55,
+    0x1d,
+    0x13,
+    /* NID_crl_number */
+    0x55,
+    0x1d,
+    0x14,
+    /* NID_certificate_policies */
+    0x55,
+    0x1d,
+    0x20,
+    /* NID_authority_key_identifier */
+    0x55,
+    0x1d,
+    0x23,
+    /* NID_bf_cbc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x97,
+    0x55,
+    0x01,
+    0x02,
+    /* NID_mdc2 */
+    0x55,
+    0x08,
+    0x03,
+    0x65,
+    /* NID_mdc2WithRSA */
+    0x55,
+    0x08,
+    0x03,
+    0x64,
+    /* NID_givenName */
+    0x55,
+    0x04,
+    0x2a,
+    /* NID_surname */
+    0x55,
+    0x04,
+    0x04,
+    /* NID_initials */
+    0x55,
+    0x04,
+    0x2b,
+    /* NID_crl_distribution_points */
+    0x55,
+    0x1d,
+    0x1f,
+    /* NID_md5WithRSA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x03,
+    /* NID_serialNumber */
+    0x55,
+    0x04,
+    0x05,
+    /* NID_title */
+    0x55,
+    0x04,
+    0x0c,
+    /* NID_description */
+    0x55,
+    0x04,
+    0x0d,
+    /* NID_cast5_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0a,
+    /* NID_pbeWithMD5AndCast5_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0c,
+    /* NID_dsaWithSHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    0x03,
+    /* NID_sha1WithRSA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1d,
+    /* NID_dsa */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    0x01,
+    /* NID_ripemd160 */
+    0x2b,
+    0x24,
+    0x03,
+    0x02,
+    0x01,
+    /* NID_ripemd160WithRSA */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x01,
+    0x02,
+    /* NID_rc5_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x08,
+    /* NID_zlib_compression */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x08,
+    /* NID_ext_key_usage */
+    0x55,
+    0x1d,
+    0x25,
+    /* NID_id_pkix */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    /* NID_id_kp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    /* NID_server_auth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x01,
+    /* NID_client_auth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x02,
+    /* NID_code_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x03,
+    /* NID_email_protect */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x04,
+    /* NID_time_stamp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x08,
+    /* NID_ms_code_ind */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x15,
+    /* NID_ms_code_com */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x16,
+    /* NID_ms_ctl_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x01,
+    /* NID_ms_sgc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x03,
+    /* NID_ms_efs */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x04,
+    /* NID_ns_sgc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x04,
+    0x01,
+    /* NID_delta_crl */
+    0x55,
+    0x1d,
+    0x1b,
+    /* NID_crl_reason */
+    0x55,
+    0x1d,
+    0x15,
+    /* NID_invalidity_date */
+    0x55,
+    0x1d,
+    0x18,
+    /* NID_sxnet */
+    0x2b,
+    0x65,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_pbe_WithSHA1And128BitRC4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x01,
+    /* NID_pbe_WithSHA1And40BitRC4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x02,
+    /* NID_pbe_WithSHA1And3_Key_TripleDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x03,
+    /* NID_pbe_WithSHA1And2_Key_TripleDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x04,
+    /* NID_pbe_WithSHA1And128BitRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x05,
+    /* NID_pbe_WithSHA1And40BitRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x06,
+    /* NID_keyBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x01,
+    /* NID_pkcs8ShroudedKeyBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x02,
+    /* NID_certBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x03,
+    /* NID_crlBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x04,
+    /* NID_secretBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x05,
+    /* NID_safeContentsBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x06,
+    /* NID_friendlyName */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x14,
+    /* NID_localKeyID */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x15,
+    /* NID_x509Certificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x16,
+    0x01,
+    /* NID_sdsiCertificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x16,
+    0x02,
+    /* NID_x509Crl */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x17,
+    0x01,
+    /* NID_pbes2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0d,
+    /* NID_pbmac1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0e,
+    /* NID_hmacWithSHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x07,
+    /* NID_id_qt_cps */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x01,
+    /* NID_id_qt_unotice */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x02,
+    /* NID_SMIMECapabilities */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x0f,
+    /* NID_pbeWithMD2AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x04,
+    /* NID_pbeWithMD5AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x06,
+    /* NID_pbeWithSHA1AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0a,
+    /* NID_ms_ext_req */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x0e,
+    /* NID_ext_req */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x0e,
+    /* NID_name */
+    0x55,
+    0x04,
+    0x29,
+    /* NID_dnQualifier */
+    0x55,
+    0x04,
+    0x2e,
+    /* NID_id_pe */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    /* NID_id_ad */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    /* NID_info_access */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x01,
+    /* NID_ad_OCSP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    /* NID_ad_ca_issuers */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x02,
+    /* NID_OCSP_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x09,
+    /* NID_member_body */
+    0x2a,
+    /* NID_ISO_US */
+    0x2a,
+    0x86,
+    0x48,
+    /* NID_X9_57 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    /* NID_X9cm */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    /* NID_pkcs1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    /* NID_pkcs5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    /* NID_SMIME */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    /* NID_id_smime_mod */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    /* NID_id_smime_ct */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    /* NID_id_smime_aa */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    /* NID_id_smime_alg */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    /* NID_id_smime_cd */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x04,
+    /* NID_id_smime_spq */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    /* NID_id_smime_cti */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    /* NID_id_smime_mod_cms */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x01,
+    /* NID_id_smime_mod_ess */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x02,
+    /* NID_id_smime_mod_oid */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x03,
+    /* NID_id_smime_mod_msg_v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x04,
+    /* NID_id_smime_mod_ets_eSignature_88 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x05,
+    /* NID_id_smime_mod_ets_eSignature_97 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x06,
+    /* NID_id_smime_mod_ets_eSigPolicy_88 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x07,
+    /* NID_id_smime_mod_ets_eSigPolicy_97 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x08,
+    /* NID_id_smime_ct_receipt */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x01,
+    /* NID_id_smime_ct_authData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x02,
+    /* NID_id_smime_ct_publishCert */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x03,
+    /* NID_id_smime_ct_TSTInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x04,
+    /* NID_id_smime_ct_TDTInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x05,
+    /* NID_id_smime_ct_contentInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x06,
+    /* NID_id_smime_ct_DVCSRequestData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x07,
+    /* NID_id_smime_ct_DVCSResponseData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x08,
+    /* NID_id_smime_aa_receiptRequest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x01,
+    /* NID_id_smime_aa_securityLabel */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x02,
+    /* NID_id_smime_aa_mlExpandHistory */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x03,
+    /* NID_id_smime_aa_contentHint */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x04,
+    /* NID_id_smime_aa_msgSigDigest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x05,
+    /* NID_id_smime_aa_encapContentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x06,
+    /* NID_id_smime_aa_contentIdentifier */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x07,
+    /* NID_id_smime_aa_macValue */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x08,
+    /* NID_id_smime_aa_equivalentLabels */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x09,
+    /* NID_id_smime_aa_contentReference */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0a,
+    /* NID_id_smime_aa_encrypKeyPref */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0b,
+    /* NID_id_smime_aa_signingCertificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0c,
+    /* NID_id_smime_aa_smimeEncryptCerts */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0d,
+    /* NID_id_smime_aa_timeStampToken */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0e,
+    /* NID_id_smime_aa_ets_sigPolicyId */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0f,
+    /* NID_id_smime_aa_ets_commitmentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x10,
+    /* NID_id_smime_aa_ets_signerLocation */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x11,
+    /* NID_id_smime_aa_ets_signerAttr */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x12,
+    /* NID_id_smime_aa_ets_otherSigCert */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x13,
+    /* NID_id_smime_aa_ets_contentTimestamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x14,
+    /* NID_id_smime_aa_ets_CertificateRefs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x15,
+    /* NID_id_smime_aa_ets_RevocationRefs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x16,
+    /* NID_id_smime_aa_ets_certValues */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x17,
+    /* NID_id_smime_aa_ets_revocationValues */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x18,
+    /* NID_id_smime_aa_ets_escTimeStamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x19,
+    /* NID_id_smime_aa_ets_certCRLTimestamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1a,
+    /* NID_id_smime_aa_ets_archiveTimeStamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1b,
+    /* NID_id_smime_aa_signatureType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1c,
+    /* NID_id_smime_aa_dvcs_dvc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1d,
+    /* NID_id_smime_alg_ESDHwith3DES */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x01,
+    /* NID_id_smime_alg_ESDHwithRC2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x02,
+    /* NID_id_smime_alg_3DESwrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x03,
+    /* NID_id_smime_alg_RC2wrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x04,
+    /* NID_id_smime_alg_ESDH */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x05,
+    /* NID_id_smime_alg_CMS3DESwrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x06,
+    /* NID_id_smime_alg_CMSRC2wrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x07,
+    /* NID_id_smime_cd_ldap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x04,
+    0x01,
+    /* NID_id_smime_spq_ets_sqt_uri */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    0x01,
+    /* NID_id_smime_spq_ets_sqt_unotice */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    0x02,
+    /* NID_id_smime_cti_ets_proofOfOrigin */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x01,
+    /* NID_id_smime_cti_ets_proofOfReceipt */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x02,
+    /* NID_id_smime_cti_ets_proofOfDelivery */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x03,
+    /* NID_id_smime_cti_ets_proofOfSender */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x04,
+    /* NID_id_smime_cti_ets_proofOfApproval */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x05,
+    /* NID_id_smime_cti_ets_proofOfCreation */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x06,
+    /* NID_md4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x04,
+    /* NID_id_pkix_mod */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    /* NID_id_qt */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    /* NID_id_it */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    /* NID_id_pkip */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    /* NID_id_alg */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    /* NID_id_cmc */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    /* NID_id_on */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    /* NID_id_pda */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    /* NID_id_aca */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    /* NID_id_qcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0b,
+    /* NID_id_cct */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    /* NID_id_pkix1_explicit_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x01,
+    /* NID_id_pkix1_implicit_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x02,
+    /* NID_id_pkix1_explicit_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x03,
+    /* NID_id_pkix1_implicit_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x04,
+    /* NID_id_mod_crmf */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x05,
+    /* NID_id_mod_cmc */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x06,
+    /* NID_id_mod_kea_profile_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x07,
+    /* NID_id_mod_kea_profile_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x08,
+    /* NID_id_mod_cmp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x09,
+    /* NID_id_mod_qualified_cert_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0a,
+    /* NID_id_mod_qualified_cert_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0b,
+    /* NID_id_mod_attribute_cert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0c,
+    /* NID_id_mod_timestamp_protocol */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0d,
+    /* NID_id_mod_ocsp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0e,
+    /* NID_id_mod_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0f,
+    /* NID_id_mod_cmp2000 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x10,
+    /* NID_biometricInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x02,
+    /* NID_qcStatements */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x03,
+    /* NID_ac_auditEntity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x04,
+    /* NID_ac_targeting */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x05,
+    /* NID_aaControls */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x06,
+    /* NID_sbgp_ipAddrBlock */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x07,
+    /* NID_sbgp_autonomousSysNum */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x08,
+    /* NID_sbgp_routerIdentifier */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x09,
+    /* NID_textNotice */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x03,
+    /* NID_ipsecEndSystem */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x05,
+    /* NID_ipsecTunnel */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x06,
+    /* NID_ipsecUser */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x07,
+    /* NID_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x0a,
+    /* NID_id_it_caProtEncCert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x01,
+    /* NID_id_it_signKeyPairTypes */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x02,
+    /* NID_id_it_encKeyPairTypes */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x03,
+    /* NID_id_it_preferredSymmAlg */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x04,
+    /* NID_id_it_caKeyUpdateInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x05,
+    /* NID_id_it_currentCRL */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x06,
+    /* NID_id_it_unsupportedOIDs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x07,
+    /* NID_id_it_subscriptionRequest */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x08,
+    /* NID_id_it_subscriptionResponse */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x09,
+    /* NID_id_it_keyPairParamReq */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0a,
+    /* NID_id_it_keyPairParamRep */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0b,
+    /* NID_id_it_revPassphrase */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0c,
+    /* NID_id_it_implicitConfirm */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0d,
+    /* NID_id_it_confirmWaitTime */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0e,
+    /* NID_id_it_origPKIMessage */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0f,
+    /* NID_id_regCtrl */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    /* NID_id_regInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    /* NID_id_regCtrl_regToken */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x01,
+    /* NID_id_regCtrl_authenticator */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x02,
+    /* NID_id_regCtrl_pkiPublicationInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x03,
+    /* NID_id_regCtrl_pkiArchiveOptions */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x04,
+    /* NID_id_regCtrl_oldCertID */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x05,
+    /* NID_id_regCtrl_protocolEncrKey */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x06,
+    /* NID_id_regInfo_utf8Pairs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    0x01,
+    /* NID_id_regInfo_certReq */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    0x02,
+    /* NID_id_alg_des40 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x01,
+    /* NID_id_alg_noSignature */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x02,
+    /* NID_id_alg_dh_sig_hmac_sha1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x03,
+    /* NID_id_alg_dh_pop */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x04,
+    /* NID_id_cmc_statusInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x01,
+    /* NID_id_cmc_identification */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x02,
+    /* NID_id_cmc_identityProof */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x03,
+    /* NID_id_cmc_dataReturn */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x04,
+    /* NID_id_cmc_transactionId */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x05,
+    /* NID_id_cmc_senderNonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x06,
+    /* NID_id_cmc_recipientNonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x07,
+    /* NID_id_cmc_addExtensions */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x08,
+    /* NID_id_cmc_encryptedPOP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x09,
+    /* NID_id_cmc_decryptedPOP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0a,
+    /* NID_id_cmc_lraPOPWitness */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0b,
+    /* NID_id_cmc_getCert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0f,
+    /* NID_id_cmc_getCRL */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x10,
+    /* NID_id_cmc_revokeRequest */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x11,
+    /* NID_id_cmc_regInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x12,
+    /* NID_id_cmc_responseInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x13,
+    /* NID_id_cmc_queryPending */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x15,
+    /* NID_id_cmc_popLinkRandom */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x16,
+    /* NID_id_cmc_popLinkWitness */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x17,
+    /* NID_id_cmc_confirmCertAcceptance */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x18,
+    /* NID_id_on_personalData */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    0x01,
+    /* NID_id_pda_dateOfBirth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x01,
+    /* NID_id_pda_placeOfBirth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x02,
+    /* NID_id_pda_gender */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x03,
+    /* NID_id_pda_countryOfCitizenship */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x04,
+    /* NID_id_pda_countryOfResidence */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x05,
+    /* NID_id_aca_authenticationInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x01,
+    /* NID_id_aca_accessIdentity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x02,
+    /* NID_id_aca_chargingIdentity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x03,
+    /* NID_id_aca_group */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x04,
+    /* NID_id_aca_role */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x05,
+    /* NID_id_qcs_pkixQCSyntax_v1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0b,
+    0x01,
+    /* NID_id_cct_crs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x01,
+    /* NID_id_cct_PKIData */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x02,
+    /* NID_id_cct_PKIResponse */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x03,
+    /* NID_ad_timeStamping */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x03,
+    /* NID_ad_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x04,
+    /* NID_id_pkix_OCSP_basic */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x01,
+    /* NID_id_pkix_OCSP_Nonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x02,
+    /* NID_id_pkix_OCSP_CrlID */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x03,
+    /* NID_id_pkix_OCSP_acceptableResponses */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x04,
+    /* NID_id_pkix_OCSP_noCheck */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x05,
+    /* NID_id_pkix_OCSP_archiveCutoff */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x06,
+    /* NID_id_pkix_OCSP_serviceLocator */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x07,
+    /* NID_id_pkix_OCSP_extendedStatus */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x08,
+    /* NID_id_pkix_OCSP_valid */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x09,
+    /* NID_id_pkix_OCSP_path */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x0a,
+    /* NID_id_pkix_OCSP_trustRoot */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x0b,
+    /* NID_algorithm */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    /* NID_rsaSignature */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0b,
+    /* NID_X500algorithms */
+    0x55,
+    0x08,
+    /* NID_org */
+    0x2b,
+    /* NID_dod */
+    0x2b,
+    0x06,
+    /* NID_iana */
+    0x2b,
+    0x06,
+    0x01,
+    /* NID_Directory */
+    0x2b,
+    0x06,
+    0x01,
+    0x01,
+    /* NID_Management */
+    0x2b,
+    0x06,
+    0x01,
+    0x02,
+    /* NID_Experimental */
+    0x2b,
+    0x06,
+    0x01,
+    0x03,
+    /* NID_Private */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    /* NID_Security */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    /* NID_SNMPv2 */
+    0x2b,
+    0x06,
+    0x01,
+    0x06,
+    /* NID_Mail */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    /* NID_Enterprises */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_dcObject */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x8b,
+    0x3a,
+    0x82,
+    0x58,
+    /* NID_domainComponent */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x19,
+    /* NID_Domain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0d,
+    /* NID_selected_attribute_types */
+    0x55,
+    0x01,
+    0x05,
+    /* NID_clearance */
+    0x55,
+    0x01,
+    0x05,
+    0x37,
+    /* NID_md4WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_ac_proxying */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0a,
+    /* NID_sinfo_access */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0b,
+    /* NID_id_aca_encAttrs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x06,
+    /* NID_role */
+    0x55,
+    0x04,
+    0x48,
+    /* NID_policy_constraints */
+    0x55,
+    0x1d,
+    0x24,
+    /* NID_target_information */
+    0x55,
+    0x1d,
+    0x37,
+    /* NID_no_rev_avail */
+    0x55,
+    0x1d,
+    0x38,
+    /* NID_ansi_X9_62 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    /* NID_X9_62_prime_field */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x01,
+    /* NID_X9_62_characteristic_two_field */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    /* NID_X9_62_id_ecPublicKey */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x02,
+    0x01,
+    /* NID_X9_62_prime192v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x01,
+    /* NID_X9_62_prime192v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x02,
+    /* NID_X9_62_prime192v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x03,
+    /* NID_X9_62_prime239v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x04,
+    /* NID_X9_62_prime239v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x05,
+    /* NID_X9_62_prime239v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x06,
+    /* NID_X9_62_prime256v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x07,
+    /* NID_ecdsa_with_SHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x01,
+    /* NID_ms_csp_name */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x11,
+    0x01,
+    /* NID_aes_128_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x01,
+    /* NID_aes_128_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x02,
+    /* NID_aes_128_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x03,
+    /* NID_aes_128_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x04,
+    /* NID_aes_192_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x15,
+    /* NID_aes_192_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x16,
+    /* NID_aes_192_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x17,
+    /* NID_aes_192_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x18,
+    /* NID_aes_256_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x29,
+    /* NID_aes_256_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2a,
+    /* NID_aes_256_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2b,
+    /* NID_aes_256_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2c,
+    /* NID_hold_instruction_code */
+    0x55,
+    0x1d,
+    0x17,
+    /* NID_hold_instruction_none */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x01,
+    /* NID_hold_instruction_call_issuer */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x02,
+    /* NID_hold_instruction_reject */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x03,
+    /* NID_data */
+    0x09,
+    /* NID_pss */
+    0x09,
+    0x92,
+    0x26,
+    /* NID_ucl */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    /* NID_pilot */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    /* NID_pilotAttributeType */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    /* NID_pilotAttributeSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    /* NID_pilotObjectClass */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    /* NID_pilotGroups */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x0a,
+    /* NID_iA5StringSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    0x04,
+    /* NID_caseIgnoreIA5StringSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    0x05,
+    /* NID_pilotObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x03,
+    /* NID_pilotPerson */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x04,
+    /* NID_account */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x05,
+    /* NID_document */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x06,
+    /* NID_room */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x07,
+    /* NID_documentSeries */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x09,
+    /* NID_rFC822localPart */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0e,
+    /* NID_dNSDomain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0f,
+    /* NID_domainRelatedObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x11,
+    /* NID_friendlyCountry */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x12,
+    /* NID_simpleSecurityObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x13,
+    /* NID_pilotOrganization */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x14,
+    /* NID_pilotDSA */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x15,
+    /* NID_qualityLabelledData */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x16,
+    /* NID_userId */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x01,
+    /* NID_textEncodedORAddress */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x02,
+    /* NID_rfc822Mailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x03,
+    /* NID_info */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x04,
+    /* NID_favouriteDrink */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x05,
+    /* NID_roomNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x06,
+    /* NID_photo */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x07,
+    /* NID_userClass */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x08,
+    /* NID_host */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x09,
+    /* NID_manager */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0a,
+    /* NID_documentIdentifier */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0b,
+    /* NID_documentTitle */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0c,
+    /* NID_documentVersion */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0d,
+    /* NID_documentAuthor */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0e,
+    /* NID_documentLocation */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0f,
+    /* NID_homeTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x14,
+    /* NID_secretary */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x15,
+    /* NID_otherMailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x16,
+    /* NID_lastModifiedTime */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x17,
+    /* NID_lastModifiedBy */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x18,
+    /* NID_aRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1a,
+    /* NID_pilotAttributeType27 */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1b,
+    /* NID_mXRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1c,
+    /* NID_nSRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1d,
+    /* NID_sOARecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1e,
+    /* NID_cNAMERecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1f,
+    /* NID_associatedDomain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x25,
+    /* NID_associatedName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x26,
+    /* NID_homePostalAddress */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x27,
+    /* NID_personalTitle */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x28,
+    /* NID_mobileTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x29,
+    /* NID_pagerTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2a,
+    /* NID_friendlyCountryName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2b,
+    /* NID_organizationalStatus */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2d,
+    /* NID_janetMailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2e,
+    /* NID_mailPreferenceOption */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2f,
+    /* NID_buildingName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x30,
+    /* NID_dSAQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x31,
+    /* NID_singleLevelQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x32,
+    /* NID_subtreeMinimumQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x33,
+    /* NID_subtreeMaximumQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x34,
+    /* NID_personalSignature */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x35,
+    /* NID_dITRedirect */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x36,
+    /* NID_audio */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x37,
+    /* NID_documentPublisher */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x38,
+    /* NID_x500UniqueIdentifier */
+    0x55,
+    0x04,
+    0x2d,
+    /* NID_mime_mhs */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    /* NID_mime_mhs_headings */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    /* NID_mime_mhs_bodies */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x02,
+    /* NID_id_hex_partial_message */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_id_hex_multipart_message */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_generationQualifier */
+    0x55,
+    0x04,
+    0x2c,
+    /* NID_pseudonym */
+    0x55,
+    0x04,
+    0x41,
+    /* NID_id_set */
+    0x67,
+    0x2a,
+    /* NID_set_ctype */
+    0x67,
+    0x2a,
+    0x00,
+    /* NID_set_msgExt */
+    0x67,
+    0x2a,
+    0x01,
+    /* NID_set_attr */
+    0x67,
+    0x2a,
+    0x03,
+    /* NID_set_policy */
+    0x67,
+    0x2a,
+    0x05,
+    /* NID_set_certExt */
+    0x67,
+    0x2a,
+    0x07,
+    /* NID_set_brand */
+    0x67,
+    0x2a,
+    0x08,
+    /* NID_setct_PANData */
+    0x67,
+    0x2a,
+    0x00,
+    0x00,
+    /* NID_setct_PANToken */
+    0x67,
+    0x2a,
+    0x00,
+    0x01,
+    /* NID_setct_PANOnly */
+    0x67,
+    0x2a,
+    0x00,
+    0x02,
+    /* NID_setct_OIData */
+    0x67,
+    0x2a,
+    0x00,
+    0x03,
+    /* NID_setct_PI */
+    0x67,
+    0x2a,
+    0x00,
+    0x04,
+    /* NID_setct_PIData */
+    0x67,
+    0x2a,
+    0x00,
+    0x05,
+    /* NID_setct_PIDataUnsigned */
+    0x67,
+    0x2a,
+    0x00,
+    0x06,
+    /* NID_setct_HODInput */
+    0x67,
+    0x2a,
+    0x00,
+    0x07,
+    /* NID_setct_AuthResBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x08,
+    /* NID_setct_AuthRevReqBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x09,
+    /* NID_setct_AuthRevResBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x0a,
+    /* NID_setct_CapTokenSeq */
+    0x67,
+    0x2a,
+    0x00,
+    0x0b,
+    /* NID_setct_PInitResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x0c,
+    /* NID_setct_PI_TBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x0d,
+    /* NID_setct_PResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x0e,
+    /* NID_setct_AuthReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x10,
+    /* NID_setct_AuthResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x11,
+    /* NID_setct_AuthResTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x12,
+    /* NID_setct_AuthTokenTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x13,
+    /* NID_setct_CapTokenData */
+    0x67,
+    0x2a,
+    0x00,
+    0x14,
+    /* NID_setct_CapTokenTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x15,
+    /* NID_setct_AcqCardCodeMsg */
+    0x67,
+    0x2a,
+    0x00,
+    0x16,
+    /* NID_setct_AuthRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x17,
+    /* NID_setct_AuthRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x18,
+    /* NID_setct_AuthRevResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x19,
+    /* NID_setct_CapReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x1a,
+    /* NID_setct_CapReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x1b,
+    /* NID_setct_CapResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x1c,
+    /* NID_setct_CapRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x1d,
+    /* NID_setct_CapRevReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x1e,
+    /* NID_setct_CapRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x1f,
+    /* NID_setct_CredReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x20,
+    /* NID_setct_CredReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x21,
+    /* NID_setct_CredResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x22,
+    /* NID_setct_CredRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x23,
+    /* NID_setct_CredRevReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x24,
+    /* NID_setct_CredRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x25,
+    /* NID_setct_PCertReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x26,
+    /* NID_setct_PCertResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x27,
+    /* NID_setct_BatchAdminReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x28,
+    /* NID_setct_BatchAdminResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x29,
+    /* NID_setct_CardCInitResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2a,
+    /* NID_setct_MeAqCInitResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2b,
+    /* NID_setct_RegFormResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2c,
+    /* NID_setct_CertReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x2d,
+    /* NID_setct_CertReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2e,
+    /* NID_setct_CertResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x2f,
+    /* NID_setct_CertInqReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x30,
+    /* NID_setct_ErrorTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x31,
+    /* NID_setct_PIDualSignedTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x32,
+    /* NID_setct_PIUnsignedTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x33,
+    /* NID_setct_AuthReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x34,
+    /* NID_setct_AuthResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x35,
+    /* NID_setct_AuthResTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x36,
+    /* NID_setct_AuthTokenTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x37,
+    /* NID_setct_CapTokenTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x38,
+    /* NID_setct_CapTokenTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x39,
+    /* NID_setct_AcqCardCodeMsgTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3a,
+    /* NID_setct_AuthRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3b,
+    /* NID_setct_AuthRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3c,
+    /* NID_setct_AuthRevResTBEB */
+    0x67,
+    0x2a,
+    0x00,
+    0x3d,
+    /* NID_setct_CapReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3e,
+    /* NID_setct_CapReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x3f,
+    /* NID_setct_CapResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x40,
+    /* NID_setct_CapRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x41,
+    /* NID_setct_CapRevReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x42,
+    /* NID_setct_CapRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x43,
+    /* NID_setct_CredReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x44,
+    /* NID_setct_CredReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x45,
+    /* NID_setct_CredResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x46,
+    /* NID_setct_CredRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x47,
+    /* NID_setct_CredRevReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x48,
+    /* NID_setct_CredRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x49,
+    /* NID_setct_BatchAdminReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4a,
+    /* NID_setct_BatchAdminResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4b,
+    /* NID_setct_RegFormReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4c,
+    /* NID_setct_CertReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4d,
+    /* NID_setct_CertReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x4e,
+    /* NID_setct_CertResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4f,
+    /* NID_setct_CRLNotificationTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x50,
+    /* NID_setct_CRLNotificationResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x51,
+    /* NID_setct_BCIDistributionTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x52,
+    /* NID_setext_genCrypt */
+    0x67,
+    0x2a,
+    0x01,
+    0x01,
+    /* NID_setext_miAuth */
+    0x67,
+    0x2a,
+    0x01,
+    0x03,
+    /* NID_setext_pinSecure */
+    0x67,
+    0x2a,
+    0x01,
+    0x04,
+    /* NID_setext_pinAny */
+    0x67,
+    0x2a,
+    0x01,
+    0x05,
+    /* NID_setext_track2 */
+    0x67,
+    0x2a,
+    0x01,
+    0x07,
+    /* NID_setext_cv */
+    0x67,
+    0x2a,
+    0x01,
+    0x08,
+    /* NID_set_policy_root */
+    0x67,
+    0x2a,
+    0x05,
+    0x00,
+    /* NID_setCext_hashedRoot */
+    0x67,
+    0x2a,
+    0x07,
+    0x00,
+    /* NID_setCext_certType */
+    0x67,
+    0x2a,
+    0x07,
+    0x01,
+    /* NID_setCext_merchData */
+    0x67,
+    0x2a,
+    0x07,
+    0x02,
+    /* NID_setCext_cCertRequired */
+    0x67,
+    0x2a,
+    0x07,
+    0x03,
+    /* NID_setCext_tunneling */
+    0x67,
+    0x2a,
+    0x07,
+    0x04,
+    /* NID_setCext_setExt */
+    0x67,
+    0x2a,
+    0x07,
+    0x05,
+    /* NID_setCext_setQualf */
+    0x67,
+    0x2a,
+    0x07,
+    0x06,
+    /* NID_setCext_PGWYcapabilities */
+    0x67,
+    0x2a,
+    0x07,
+    0x07,
+    /* NID_setCext_TokenIdentifier */
+    0x67,
+    0x2a,
+    0x07,
+    0x08,
+    /* NID_setCext_Track2Data */
+    0x67,
+    0x2a,
+    0x07,
+    0x09,
+    /* NID_setCext_TokenType */
+    0x67,
+    0x2a,
+    0x07,
+    0x0a,
+    /* NID_setCext_IssuerCapabilities */
+    0x67,
+    0x2a,
+    0x07,
+    0x0b,
+    /* NID_setAttr_Cert */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    /* NID_setAttr_PGWYcap */
+    0x67,
+    0x2a,
+    0x03,
+    0x01,
+    /* NID_setAttr_TokenType */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    /* NID_setAttr_IssCap */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    /* NID_set_rootKeyThumb */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    0x00,
+    /* NID_set_addPolicy */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    0x01,
+    /* NID_setAttr_Token_EMV */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    0x01,
+    /* NID_setAttr_Token_B0Prime */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    0x02,
+    /* NID_setAttr_IssCap_CVM */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x03,
+    /* NID_setAttr_IssCap_T2 */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    /* NID_setAttr_IssCap_Sig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    /* NID_setAttr_GenCryptgrm */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x03,
+    0x01,
+    /* NID_setAttr_T2Enc */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    0x01,
+    /* NID_setAttr_T2cleartxt */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    0x02,
+    /* NID_setAttr_TokICCsig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    0x01,
+    /* NID_setAttr_SecDevSig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    0x02,
+    /* NID_set_brand_IATA_ATA */
+    0x67,
+    0x2a,
+    0x08,
+    0x01,
+    /* NID_set_brand_Diners */
+    0x67,
+    0x2a,
+    0x08,
+    0x1e,
+    /* NID_set_brand_AmericanExpress */
+    0x67,
+    0x2a,
+    0x08,
+    0x22,
+    /* NID_set_brand_JCB */
+    0x67,
+    0x2a,
+    0x08,
+    0x23,
+    /* NID_set_brand_Visa */
+    0x67,
+    0x2a,
+    0x08,
+    0x04,
+    /* NID_set_brand_MasterCard */
+    0x67,
+    0x2a,
+    0x08,
+    0x05,
+    /* NID_set_brand_Novus */
+    0x67,
+    0x2a,
+    0x08,
+    0xae,
+    0x7b,
+    /* NID_des_cdmf */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x0a,
+    /* NID_rsaOAEPEncryptionSET */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x06,
+    /* NID_international_organizations */
+    0x67,
+    /* NID_ms_smartcard_login */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x14,
+    0x02,
+    0x02,
+    /* NID_ms_upn */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x14,
+    0x02,
+    0x03,
+    /* NID_streetAddress */
+    0x55,
+    0x04,
+    0x09,
+    /* NID_postalCode */
+    0x55,
+    0x04,
+    0x11,
+    /* NID_id_ppl */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    /* NID_proxyCertInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0e,
+    /* NID_id_ppl_anyLanguage */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x00,
+    /* NID_id_ppl_inheritAll */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x01,
+    /* NID_name_constraints */
+    0x55,
+    0x1d,
+    0x1e,
+    /* NID_Independent */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x02,
+    /* NID_sha256WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0b,
+    /* NID_sha384WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0c,
+    /* NID_sha512WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0d,
+    /* NID_sha224WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0e,
+    /* NID_sha256 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x01,
+    /* NID_sha384 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x02,
+    /* NID_sha512 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x03,
+    /* NID_sha224 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x04,
+    /* NID_identified_organization */
+    0x2b,
+    /* NID_certicom_arc */
+    0x2b,
+    0x81,
+    0x04,
+    /* NID_wap */
+    0x67,
+    0x2b,
+    /* NID_wap_wsg */
+    0x67,
+    0x2b,
+    0x01,
+    /* NID_X9_62_id_characteristic_two_basis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    /* NID_X9_62_onBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x01,
+    /* NID_X9_62_tpBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x02,
+    /* NID_X9_62_ppBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x03,
+    /* NID_X9_62_c2pnb163v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x01,
+    /* NID_X9_62_c2pnb163v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x02,
+    /* NID_X9_62_c2pnb163v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x03,
+    /* NID_X9_62_c2pnb176v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x04,
+    /* NID_X9_62_c2tnb191v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x05,
+    /* NID_X9_62_c2tnb191v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x06,
+    /* NID_X9_62_c2tnb191v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x07,
+    /* NID_X9_62_c2onb191v4 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x08,
+    /* NID_X9_62_c2onb191v5 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x09,
+    /* NID_X9_62_c2pnb208w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0a,
+    /* NID_X9_62_c2tnb239v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0b,
+    /* NID_X9_62_c2tnb239v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0c,
+    /* NID_X9_62_c2tnb239v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0d,
+    /* NID_X9_62_c2onb239v4 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0e,
+    /* NID_X9_62_c2onb239v5 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0f,
+    /* NID_X9_62_c2pnb272w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x10,
+    /* NID_X9_62_c2pnb304w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x11,
+    /* NID_X9_62_c2tnb359v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x12,
+    /* NID_X9_62_c2pnb368w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x13,
+    /* NID_X9_62_c2tnb431r1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x14,
+    /* NID_secp112r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x06,
+    /* NID_secp112r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x07,
+    /* NID_secp128r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1c,
+    /* NID_secp128r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1d,
+    /* NID_secp160k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x09,
+    /* NID_secp160r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x08,
+    /* NID_secp160r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1e,
+    /* NID_secp192k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1f,
+    /* NID_secp224k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x20,
+    /* NID_secp224r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x21,
+    /* NID_secp256k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x0a,
+    /* NID_secp384r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x22,
+    /* NID_secp521r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x23,
+    /* NID_sect113r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x04,
+    /* NID_sect113r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x05,
+    /* NID_sect131r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x16,
+    /* NID_sect131r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x17,
+    /* NID_sect163k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x01,
+    /* NID_sect163r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x02,
+    /* NID_sect163r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x0f,
+    /* NID_sect193r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x18,
+    /* NID_sect193r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x19,
+    /* NID_sect233k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1a,
+    /* NID_sect233r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1b,
+    /* NID_sect239k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x03,
+    /* NID_sect283k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x10,
+    /* NID_sect283r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x11,
+    /* NID_sect409k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x24,
+    /* NID_sect409r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x25,
+    /* NID_sect571k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x26,
+    /* NID_sect571r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x27,
+    /* NID_wap_wsg_idm_ecid_wtls1 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_wap_wsg_idm_ecid_wtls3 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x03,
+    /* NID_wap_wsg_idm_ecid_wtls4 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x04,
+    /* NID_wap_wsg_idm_ecid_wtls5 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x05,
+    /* NID_wap_wsg_idm_ecid_wtls6 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x06,
+    /* NID_wap_wsg_idm_ecid_wtls7 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x07,
+    /* NID_wap_wsg_idm_ecid_wtls8 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x08,
+    /* NID_wap_wsg_idm_ecid_wtls9 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x09,
+    /* NID_wap_wsg_idm_ecid_wtls10 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0a,
+    /* NID_wap_wsg_idm_ecid_wtls11 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0b,
+    /* NID_wap_wsg_idm_ecid_wtls12 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0c,
+    /* NID_any_policy */
+    0x55,
+    0x1d,
+    0x20,
+    0x00,
+    /* NID_policy_mappings */
+    0x55,
+    0x1d,
+    0x21,
+    /* NID_inhibit_any_policy */
+    0x55,
+    0x1d,
+    0x36,
+    /* NID_camellia_128_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_camellia_192_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_camellia_256_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_camellia_128_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x01,
+    /* NID_camellia_192_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x15,
+    /* NID_camellia_256_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x29,
+    /* NID_camellia_128_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x04,
+    /* NID_camellia_192_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x18,
+    /* NID_camellia_256_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x2c,
+    /* NID_camellia_128_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x03,
+    /* NID_camellia_192_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x17,
+    /* NID_camellia_256_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x2b,
+    /* NID_subject_directory_attributes */
+    0x55,
+    0x1d,
+    0x09,
+    /* NID_issuing_distribution_point */
+    0x55,
+    0x1d,
+    0x1c,
+    /* NID_certificate_issuer */
+    0x55,
+    0x1d,
+    0x1d,
+    /* NID_kisa */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    /* NID_seed_ecb */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x03,
+    /* NID_seed_cbc */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x04,
+    /* NID_seed_ofb128 */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x06,
+    /* NID_seed_cfb128 */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x05,
+    /* NID_hmac_md5 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x08,
+    0x01,
+    0x01,
+    /* NID_hmac_sha1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x08,
+    0x01,
+    0x02,
+    /* NID_id_PasswordBasedMAC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0d,
+    /* NID_id_DHBasedMac */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x1e,
+    /* NID_id_it_suppLangTags */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x10,
+    /* NID_caRepository */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x05,
+    /* NID_id_smime_ct_compressedData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x09,
+    /* NID_id_ct_asciiTextWithCRLF */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x1b,
+    /* NID_id_aes128_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x05,
+    /* NID_id_aes192_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x19,
+    /* NID_id_aes256_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2d,
+    /* NID_ecdsa_with_Recommended */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x02,
+    /* NID_ecdsa_with_Specified */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    /* NID_ecdsa_with_SHA224 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x01,
+    /* NID_ecdsa_with_SHA256 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x02,
+    /* NID_ecdsa_with_SHA384 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x03,
+    /* NID_ecdsa_with_SHA512 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x04,
+    /* NID_hmacWithMD5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x06,
+    /* NID_hmacWithSHA224 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x08,
+    /* NID_hmacWithSHA256 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x09,
+    /* NID_hmacWithSHA384 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x0a,
+    /* NID_hmacWithSHA512 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x0b,
+    /* NID_dsa_with_SHA224 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x03,
+    0x01,
+    /* NID_dsa_with_SHA256 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x03,
+    0x02,
+    /* NID_whirlpool */
+    0x28,
+    0xcf,
+    0x06,
+    0x03,
+    0x00,
+    0x37,
+    /* NID_cryptopro */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    /* NID_cryptocom */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    /* NID_id_GostR3411_94_with_GostR3410_2001 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x03,
+    /* NID_id_GostR3411_94_with_GostR3410_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x04,
+    /* NID_id_GostR3411_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x09,
+    /* NID_id_HMACGostR3411_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0a,
+    /* NID_id_GostR3410_2001 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x13,
+    /* NID_id_GostR3410_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    /* NID_id_Gost28147_89 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x15,
+    /* NID_id_Gost28147_89_MAC */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x16,
+    /* NID_id_GostR3411_94_prf */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x17,
+    /* NID_id_GostR3410_2001DH */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x62,
+    /* NID_id_GostR3410_94DH */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x63,
+    /* NID_id_Gost28147_89_CryptoPro_KeyMeshing */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0e,
+    0x01,
+    /* NID_id_Gost28147_89_None_KeyMeshing */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0e,
+    0x00,
+    /* NID_id_GostR3411_94_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1e,
+    0x00,
+    /* NID_id_GostR3411_94_CryptoProParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1e,
+    0x01,
+    /* NID_id_Gost28147_89_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x00,
+    /* NID_id_Gost28147_89_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x01,
+    /* NID_id_Gost28147_89_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x02,
+    /* NID_id_Gost28147_89_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x03,
+    /* NID_id_Gost28147_89_CryptoPro_D_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x04,
+    /* NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x05,
+    /* NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x06,
+    /* NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x07,
+    /* NID_id_GostR3410_94_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x00,
+    /* NID_id_GostR3410_94_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x02,
+    /* NID_id_GostR3410_94_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x03,
+    /* NID_id_GostR3410_94_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x04,
+    /* NID_id_GostR3410_94_CryptoPro_D_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x05,
+    /* NID_id_GostR3410_94_CryptoPro_XchA_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x01,
+    /* NID_id_GostR3410_94_CryptoPro_XchB_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x02,
+    /* NID_id_GostR3410_94_CryptoPro_XchC_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x03,
+    /* NID_id_GostR3410_2001_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x00,
+    /* NID_id_GostR3410_2001_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x01,
+    /* NID_id_GostR3410_2001_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x02,
+    /* NID_id_GostR3410_2001_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x03,
+    /* NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x24,
+    0x00,
+    /* NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x24,
+    0x01,
+    /* NID_id_GostR3410_94_a */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x01,
+    /* NID_id_GostR3410_94_aBis */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x02,
+    /* NID_id_GostR3410_94_b */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x03,
+    /* NID_id_GostR3410_94_bBis */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x04,
+    /* NID_id_Gost28147_89_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x06,
+    0x01,
+    /* NID_id_GostR3410_94_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x05,
+    0x03,
+    /* NID_id_GostR3410_2001_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x05,
+    0x04,
+    /* NID_id_GostR3411_94_with_GostR3410_94_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x03,
+    0x03,
+    /* NID_id_GostR3411_94_with_GostR3410_2001_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x03,
+    0x04,
+    /* NID_id_GostR3410_2001_ParamSet_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x08,
+    0x01,
+    /* NID_LocalKeySet */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x11,
+    0x02,
+    /* NID_freshest_crl */
+    0x55,
+    0x1d,
+    0x2e,
+    /* NID_id_on_permanentIdentifier */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    0x03,
+    /* NID_searchGuide */
+    0x55,
+    0x04,
+    0x0e,
+    /* NID_businessCategory */
+    0x55,
+    0x04,
+    0x0f,
+    /* NID_postalAddress */
+    0x55,
+    0x04,
+    0x10,
+    /* NID_postOfficeBox */
+    0x55,
+    0x04,
+    0x12,
+    /* NID_physicalDeliveryOfficeName */
+    0x55,
+    0x04,
+    0x13,
+    /* NID_telephoneNumber */
+    0x55,
+    0x04,
+    0x14,
+    /* NID_telexNumber */
+    0x55,
+    0x04,
+    0x15,
+    /* NID_teletexTerminalIdentifier */
+    0x55,
+    0x04,
+    0x16,
+    /* NID_facsimileTelephoneNumber */
+    0x55,
+    0x04,
+    0x17,
+    /* NID_x121Address */
+    0x55,
+    0x04,
+    0x18,
+    /* NID_internationaliSDNNumber */
+    0x55,
+    0x04,
+    0x19,
+    /* NID_registeredAddress */
+    0x55,
+    0x04,
+    0x1a,
+    /* NID_destinationIndicator */
+    0x55,
+    0x04,
+    0x1b,
+    /* NID_preferredDeliveryMethod */
+    0x55,
+    0x04,
+    0x1c,
+    /* NID_presentationAddress */
+    0x55,
+    0x04,
+    0x1d,
+    /* NID_supportedApplicationContext */
+    0x55,
+    0x04,
+    0x1e,
+    /* NID_member */
+    0x55,
+    0x04,
+    0x1f,
+    /* NID_owner */
+    0x55,
+    0x04,
+    0x20,
+    /* NID_roleOccupant */
+    0x55,
+    0x04,
+    0x21,
+    /* NID_seeAlso */
+    0x55,
+    0x04,
+    0x22,
+    /* NID_userPassword */
+    0x55,
+    0x04,
+    0x23,
+    /* NID_userCertificate */
+    0x55,
+    0x04,
+    0x24,
+    /* NID_cACertificate */
+    0x55,
+    0x04,
+    0x25,
+    /* NID_authorityRevocationList */
+    0x55,
+    0x04,
+    0x26,
+    /* NID_certificateRevocationList */
+    0x55,
+    0x04,
+    0x27,
+    /* NID_crossCertificatePair */
+    0x55,
+    0x04,
+    0x28,
+    /* NID_enhancedSearchGuide */
+    0x55,
+    0x04,
+    0x2f,
+    /* NID_protocolInformation */
+    0x55,
+    0x04,
+    0x30,
+    /* NID_distinguishedName */
+    0x55,
+    0x04,
+    0x31,
+    /* NID_uniqueMember */
+    0x55,
+    0x04,
+    0x32,
+    /* NID_houseIdentifier */
+    0x55,
+    0x04,
+    0x33,
+    /* NID_supportedAlgorithms */
+    0x55,
+    0x04,
+    0x34,
+    /* NID_deltaRevocationList */
+    0x55,
+    0x04,
+    0x35,
+    /* NID_dmdName */
+    0x55,
+    0x04,
+    0x36,
+    /* NID_id_alg_PWRI_KEK */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x09,
+    /* NID_aes_128_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x06,
+    /* NID_aes_128_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x07,
+    /* NID_id_aes128_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x08,
+    /* NID_aes_192_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1a,
+    /* NID_aes_192_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1b,
+    /* NID_id_aes192_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1c,
+    /* NID_aes_256_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2e,
+    /* NID_aes_256_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2f,
+    /* NID_id_aes256_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x30,
+    /* NID_id_camellia128_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x02,
+    /* NID_id_camellia192_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x03,
+    /* NID_id_camellia256_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x04,
+    /* NID_anyExtendedKeyUsage */
+    0x55,
+    0x1d,
+    0x25,
+    0x00,
+    /* NID_mgf1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x08,
+    /* NID_rsassaPss */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0a,
+    /* NID_rsaesOaep */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x07,
+    /* NID_dhpublicnumber */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3e,
+    0x02,
+    0x01,
+    /* NID_brainpoolP160r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_brainpoolP160t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_brainpoolP192r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_brainpoolP192t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_brainpoolP224r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x05,
+    /* NID_brainpoolP224t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x06,
+    /* NID_brainpoolP256r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x07,
+    /* NID_brainpoolP256t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x08,
+    /* NID_brainpoolP320r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x09,
+    /* NID_brainpoolP320t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0a,
+    /* NID_brainpoolP384r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0b,
+    /* NID_brainpoolP384t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0c,
+    /* NID_brainpoolP512r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0d,
+    /* NID_brainpoolP512t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0e,
+    /* NID_pSpecified */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x09,
+    /* NID_dhSinglePass_stdDH_sha1kdf_scheme */
+    0x2b,
+    0x81,
+    0x05,
+    0x10,
+    0x86,
+    0x48,
+    0x3f,
+    0x00,
+    0x02,
+    /* NID_dhSinglePass_stdDH_sha224kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x00,
+    /* NID_dhSinglePass_stdDH_sha256kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x01,
+    /* NID_dhSinglePass_stdDH_sha384kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x02,
+    /* NID_dhSinglePass_stdDH_sha512kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x03,
+    /* NID_dhSinglePass_cofactorDH_sha1kdf_scheme */
+    0x2b,
+    0x81,
+    0x05,
+    0x10,
+    0x86,
+    0x48,
+    0x3f,
+    0x00,
+    0x03,
+    /* NID_dhSinglePass_cofactorDH_sha224kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x00,
+    /* NID_dhSinglePass_cofactorDH_sha256kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x01,
+    /* NID_dhSinglePass_cofactorDH_sha384kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x02,
+    /* NID_dhSinglePass_cofactorDH_sha512kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x03,
+    /* NID_X25519 */
+    0x2b,
+    0x65,
+    0x6e,
+    /* NID_ED25519 */
+    0x2b,
+    0x65,
+    0x70,
+    /* NID_ED448 */
+    0x2b,
+    0x65,
+    0x71,
+    /* NID_X448 */
+    0x2b,
+    0x65,
+    0x6f,
+};
+
+static const ASN1_OBJECT kObjects[NUM_NID] = {
+    {"UNDEF", "undefined", NID_undef, 0, NULL, 0},
+    {"rsadsi", "RSA Data Security, Inc.", NID_rsadsi, 6, &kObjectData[0], 0},
+    {"pkcs", "RSA Data Security, Inc. PKCS", NID_pkcs, 7, &kObjectData[6], 0},
+    {"MD2", "md2", NID_md2, 8, &kObjectData[13], 0},
+    {"MD5", "md5", NID_md5, 8, &kObjectData[21], 0},
+    {"RC4", "rc4", NID_rc4, 8, &kObjectData[29], 0},
+    {"rsaEncryption", "rsaEncryption", NID_rsaEncryption, 9, &kObjectData[37],
+     0},
+    {"RSA-MD2", "md2WithRSAEncryption", NID_md2WithRSAEncryption, 9,
+     &kObjectData[46], 0},
+    {"RSA-MD5", "md5WithRSAEncryption", NID_md5WithRSAEncryption, 9,
+     &kObjectData[55], 0},
+    {"PBE-MD2-DES", "pbeWithMD2AndDES-CBC", NID_pbeWithMD2AndDES_CBC, 9,
+     &kObjectData[64], 0},
+    {"PBE-MD5-DES", "pbeWithMD5AndDES-CBC", NID_pbeWithMD5AndDES_CBC, 9,
+     &kObjectData[73], 0},
+    {"X500", "directory services (X.500)", NID_X500, 1, &kObjectData[82], 0},
+    {"X509", "X509", NID_X509, 2, &kObjectData[83], 0},
+    {"CN", "commonName", NID_commonName, 3, &kObjectData[85], 0},
+    {"C", "countryName", NID_countryName, 3, &kObjectData[88], 0},
+    {"L", "localityName", NID_localityName, 3, &kObjectData[91], 0},
+    {"ST", "stateOrProvinceName", NID_stateOrProvinceName, 3, &kObjectData[94],
+     0},
+    {"O", "organizationName", NID_organizationName, 3, &kObjectData[97], 0},
+    {"OU", "organizationalUnitName", NID_organizationalUnitName, 3,
+     &kObjectData[100], 0},
+    {"RSA", "rsa", NID_rsa, 4, &kObjectData[103], 0},
+    {"pkcs7", "pkcs7", NID_pkcs7, 8, &kObjectData[107], 0},
+    {"pkcs7-data", "pkcs7-data", NID_pkcs7_data, 9, &kObjectData[115], 0},
+    {"pkcs7-signedData", "pkcs7-signedData", NID_pkcs7_signed, 9,
+     &kObjectData[124], 0},
+    {"pkcs7-envelopedData", "pkcs7-envelopedData", NID_pkcs7_enveloped, 9,
+     &kObjectData[133], 0},
+    {"pkcs7-signedAndEnvelopedData", "pkcs7-signedAndEnvelopedData",
+     NID_pkcs7_signedAndEnveloped, 9, &kObjectData[142], 0},
+    {"pkcs7-digestData", "pkcs7-digestData", NID_pkcs7_digest, 9,
+     &kObjectData[151], 0},
+    {"pkcs7-encryptedData", "pkcs7-encryptedData", NID_pkcs7_encrypted, 9,
+     &kObjectData[160], 0},
+    {"pkcs3", "pkcs3", NID_pkcs3, 8, &kObjectData[169], 0},
+    {"dhKeyAgreement", "dhKeyAgreement", NID_dhKeyAgreement, 9,
+     &kObjectData[177], 0},
+    {"DES-ECB", "des-ecb", NID_des_ecb, 5, &kObjectData[186], 0},
+    {"DES-CFB", "des-cfb", NID_des_cfb64, 5, &kObjectData[191], 0},
+    {"DES-CBC", "des-cbc", NID_des_cbc, 5, &kObjectData[196], 0},
+    {"DES-EDE", "des-ede", NID_des_ede_ecb, 5, &kObjectData[201], 0},
+    {"DES-EDE3", "des-ede3", NID_des_ede3_ecb, 0, NULL, 0},
+    {"IDEA-CBC", "idea-cbc", NID_idea_cbc, 11, &kObjectData[206], 0},
+    {"IDEA-CFB", "idea-cfb", NID_idea_cfb64, 0, NULL, 0},
+    {"IDEA-ECB", "idea-ecb", NID_idea_ecb, 0, NULL, 0},
+    {"RC2-CBC", "rc2-cbc", NID_rc2_cbc, 8, &kObjectData[217], 0},
+    {"RC2-ECB", "rc2-ecb", NID_rc2_ecb, 0, NULL, 0},
+    {"RC2-CFB", "rc2-cfb", NID_rc2_cfb64, 0, NULL, 0},
+    {"RC2-OFB", "rc2-ofb", NID_rc2_ofb64, 0, NULL, 0},
+    {"SHA", "sha", NID_sha, 5, &kObjectData[225], 0},
+    {"RSA-SHA", "shaWithRSAEncryption", NID_shaWithRSAEncryption, 5,
+     &kObjectData[230], 0},
+    {"DES-EDE-CBC", "des-ede-cbc", NID_des_ede_cbc, 0, NULL, 0},
+    {"DES-EDE3-CBC", "des-ede3-cbc", NID_des_ede3_cbc, 8, &kObjectData[235], 0},
+    {"DES-OFB", "des-ofb", NID_des_ofb64, 5, &kObjectData[243], 0},
+    {"IDEA-OFB", "idea-ofb", NID_idea_ofb64, 0, NULL, 0},
+    {"pkcs9", "pkcs9", NID_pkcs9, 8, &kObjectData[248], 0},
+    {"emailAddress", "emailAddress", NID_pkcs9_emailAddress, 9,
+     &kObjectData[256], 0},
+    {"unstructuredName", "unstructuredName", NID_pkcs9_unstructuredName, 9,
+     &kObjectData[265], 0},
+    {"contentType", "contentType", NID_pkcs9_contentType, 9, &kObjectData[274],
+     0},
+    {"messageDigest", "messageDigest", NID_pkcs9_messageDigest, 9,
+     &kObjectData[283], 0},
+    {"signingTime", "signingTime", NID_pkcs9_signingTime, 9, &kObjectData[292],
+     0},
+    {"countersignature", "countersignature", NID_pkcs9_countersignature, 9,
+     &kObjectData[301], 0},
+    {"challengePassword", "challengePassword", NID_pkcs9_challengePassword, 9,
+     &kObjectData[310], 0},
+    {"unstructuredAddress", "unstructuredAddress",
+     NID_pkcs9_unstructuredAddress, 9, &kObjectData[319], 0},
+    {"extendedCertificateAttributes", "extendedCertificateAttributes",
+     NID_pkcs9_extCertAttributes, 9, &kObjectData[328], 0},
+    {"Netscape", "Netscape Communications Corp.", NID_netscape, 7,
+     &kObjectData[337], 0},
+    {"nsCertExt", "Netscape Certificate Extension", NID_netscape_cert_extension,
+     8, &kObjectData[344], 0},
+    {"nsDataType", "Netscape Data Type", NID_netscape_data_type, 8,
+     &kObjectData[352], 0},
+    {"DES-EDE-CFB", "des-ede-cfb", NID_des_ede_cfb64, 0, NULL, 0},
+    {"DES-EDE3-CFB", "des-ede3-cfb", NID_des_ede3_cfb64, 0, NULL, 0},
+    {"DES-EDE-OFB", "des-ede-ofb", NID_des_ede_ofb64, 0, NULL, 0},
+    {"DES-EDE3-OFB", "des-ede3-ofb", NID_des_ede3_ofb64, 0, NULL, 0},
+    {"SHA1", "sha1", NID_sha1, 5, &kObjectData[360], 0},
+    {"RSA-SHA1", "sha1WithRSAEncryption", NID_sha1WithRSAEncryption, 9,
+     &kObjectData[365], 0},
+    {"DSA-SHA", "dsaWithSHA", NID_dsaWithSHA, 5, &kObjectData[374], 0},
+    {"DSA-old", "dsaEncryption-old", NID_dsa_2, 5, &kObjectData[379], 0},
+    {"PBE-SHA1-RC2-64", "pbeWithSHA1AndRC2-CBC", NID_pbeWithSHA1AndRC2_CBC, 9,
+     &kObjectData[384], 0},
+    {"PBKDF2", "PBKDF2", NID_id_pbkdf2, 9, &kObjectData[393], 0},
+    {"DSA-SHA1-old", "dsaWithSHA1-old", NID_dsaWithSHA1_2, 5, &kObjectData[402],
+     0},
+    {"nsCertType", "Netscape Cert Type", NID_netscape_cert_type, 9,
+     &kObjectData[407], 0},
+    {"nsBaseUrl", "Netscape Base Url", NID_netscape_base_url, 9,
+     &kObjectData[416], 0},
+    {"nsRevocationUrl", "Netscape Revocation Url", NID_netscape_revocation_url,
+     9, &kObjectData[425], 0},
+    {"nsCaRevocationUrl", "Netscape CA Revocation Url",
+     NID_netscape_ca_revocation_url, 9, &kObjectData[434], 0},
+    {"nsRenewalUrl", "Netscape Renewal Url", NID_netscape_renewal_url, 9,
+     &kObjectData[443], 0},
+    {"nsCaPolicyUrl", "Netscape CA Policy Url", NID_netscape_ca_policy_url, 9,
+     &kObjectData[452], 0},
+    {"nsSslServerName", "Netscape SSL Server Name",
+     NID_netscape_ssl_server_name, 9, &kObjectData[461], 0},
+    {"nsComment", "Netscape Comment", NID_netscape_comment, 9,
+     &kObjectData[470], 0},
+    {"nsCertSequence", "Netscape Certificate Sequence",
+     NID_netscape_cert_sequence, 9, &kObjectData[479], 0},
+    {"DESX-CBC", "desx-cbc", NID_desx_cbc, 0, NULL, 0},
+    {"id-ce", "id-ce", NID_id_ce, 2, &kObjectData[488], 0},
+    {"subjectKeyIdentifier", "X509v3 Subject Key Identifier",
+     NID_subject_key_identifier, 3, &kObjectData[490], 0},
+    {"keyUsage", "X509v3 Key Usage", NID_key_usage, 3, &kObjectData[493], 0},
+    {"privateKeyUsagePeriod", "X509v3 Private Key Usage Period",
+     NID_private_key_usage_period, 3, &kObjectData[496], 0},
+    {"subjectAltName", "X509v3 Subject Alternative Name", NID_subject_alt_name,
+     3, &kObjectData[499], 0},
+    {"issuerAltName", "X509v3 Issuer Alternative Name", NID_issuer_alt_name, 3,
+     &kObjectData[502], 0},
+    {"basicConstraints", "X509v3 Basic Constraints", NID_basic_constraints, 3,
+     &kObjectData[505], 0},
+    {"crlNumber", "X509v3 CRL Number", NID_crl_number, 3, &kObjectData[508], 0},
+    {"certificatePolicies", "X509v3 Certificate Policies",
+     NID_certificate_policies, 3, &kObjectData[511], 0},
+    {"authorityKeyIdentifier", "X509v3 Authority Key Identifier",
+     NID_authority_key_identifier, 3, &kObjectData[514], 0},
+    {"BF-CBC", "bf-cbc", NID_bf_cbc, 9, &kObjectData[517], 0},
+    {"BF-ECB", "bf-ecb", NID_bf_ecb, 0, NULL, 0},
+    {"BF-CFB", "bf-cfb", NID_bf_cfb64, 0, NULL, 0},
+    {"BF-OFB", "bf-ofb", NID_bf_ofb64, 0, NULL, 0},
+    {"MDC2", "mdc2", NID_mdc2, 4, &kObjectData[526], 0},
+    {"RSA-MDC2", "mdc2WithRSA", NID_mdc2WithRSA, 4, &kObjectData[530], 0},
+    {"RC4-40", "rc4-40", NID_rc4_40, 0, NULL, 0},
+    {"RC2-40-CBC", "rc2-40-cbc", NID_rc2_40_cbc, 0, NULL, 0},
+    {"GN", "givenName", NID_givenName, 3, &kObjectData[534], 0},
+    {"SN", "surname", NID_surname, 3, &kObjectData[537], 0},
+    {"initials", "initials", NID_initials, 3, &kObjectData[540], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"crlDistributionPoints", "X509v3 CRL Distribution Points",
+     NID_crl_distribution_points, 3, &kObjectData[543], 0},
+    {"RSA-NP-MD5", "md5WithRSA", NID_md5WithRSA, 5, &kObjectData[546], 0},
+    {"serialNumber", "serialNumber", NID_serialNumber, 3, &kObjectData[551], 0},
+    {"title", "title", NID_title, 3, &kObjectData[554], 0},
+    {"description", "description", NID_description, 3, &kObjectData[557], 0},
+    {"CAST5-CBC", "cast5-cbc", NID_cast5_cbc, 9, &kObjectData[560], 0},
+    {"CAST5-ECB", "cast5-ecb", NID_cast5_ecb, 0, NULL, 0},
+    {"CAST5-CFB", "cast5-cfb", NID_cast5_cfb64, 0, NULL, 0},
+    {"CAST5-OFB", "cast5-ofb", NID_cast5_ofb64, 0, NULL, 0},
+    {"pbeWithMD5AndCast5CBC", "pbeWithMD5AndCast5CBC",
+     NID_pbeWithMD5AndCast5_CBC, 9, &kObjectData[569], 0},
+    {"DSA-SHA1", "dsaWithSHA1", NID_dsaWithSHA1, 7, &kObjectData[578], 0},
+    {"MD5-SHA1", "md5-sha1", NID_md5_sha1, 0, NULL, 0},
+    {"RSA-SHA1-2", "sha1WithRSA", NID_sha1WithRSA, 5, &kObjectData[585], 0},
+    {"DSA", "dsaEncryption", NID_dsa, 7, &kObjectData[590], 0},
+    {"RIPEMD160", "ripemd160", NID_ripemd160, 5, &kObjectData[597], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"RSA-RIPEMD160", "ripemd160WithRSA", NID_ripemd160WithRSA, 6,
+     &kObjectData[602], 0},
+    {"RC5-CBC", "rc5-cbc", NID_rc5_cbc, 8, &kObjectData[608], 0},
+    {"RC5-ECB", "rc5-ecb", NID_rc5_ecb, 0, NULL, 0},
+    {"RC5-CFB", "rc5-cfb", NID_rc5_cfb64, 0, NULL, 0},
+    {"RC5-OFB", "rc5-ofb", NID_rc5_ofb64, 0, NULL, 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"ZLIB", "zlib compression", NID_zlib_compression, 11, &kObjectData[616],
+     0},
+    {"extendedKeyUsage", "X509v3 Extended Key Usage", NID_ext_key_usage, 3,
+     &kObjectData[627], 0},
+    {"PKIX", "PKIX", NID_id_pkix, 6, &kObjectData[630], 0},
+    {"id-kp", "id-kp", NID_id_kp, 7, &kObjectData[636], 0},
+    {"serverAuth", "TLS Web Server Authentication", NID_server_auth, 8,
+     &kObjectData[643], 0},
+    {"clientAuth", "TLS Web Client Authentication", NID_client_auth, 8,
+     &kObjectData[651], 0},
+    {"codeSigning", "Code Signing", NID_code_sign, 8, &kObjectData[659], 0},
+    {"emailProtection", "E-mail Protection", NID_email_protect, 8,
+     &kObjectData[667], 0},
+    {"timeStamping", "Time Stamping", NID_time_stamp, 8, &kObjectData[675], 0},
+    {"msCodeInd", "Microsoft Individual Code Signing", NID_ms_code_ind, 10,
+     &kObjectData[683], 0},
+    {"msCodeCom", "Microsoft Commercial Code Signing", NID_ms_code_com, 10,
+     &kObjectData[693], 0},
+    {"msCTLSign", "Microsoft Trust List Signing", NID_ms_ctl_sign, 10,
+     &kObjectData[703], 0},
+    {"msSGC", "Microsoft Server Gated Crypto", NID_ms_sgc, 10,
+     &kObjectData[713], 0},
+    {"msEFS", "Microsoft Encrypted File System", NID_ms_efs, 10,
+     &kObjectData[723], 0},
+    {"nsSGC", "Netscape Server Gated Crypto", NID_ns_sgc, 9, &kObjectData[733],
+     0},
+    {"deltaCRL", "X509v3 Delta CRL Indicator", NID_delta_crl, 3,
+     &kObjectData[742], 0},
+    {"CRLReason", "X509v3 CRL Reason Code", NID_crl_reason, 3,
+     &kObjectData[745], 0},
+    {"invalidityDate", "Invalidity Date", NID_invalidity_date, 3,
+     &kObjectData[748], 0},
+    {"SXNetID", "Strong Extranet ID", NID_sxnet, 5, &kObjectData[751], 0},
+    {"PBE-SHA1-RC4-128", "pbeWithSHA1And128BitRC4",
+     NID_pbe_WithSHA1And128BitRC4, 10, &kObjectData[756], 0},
+    {"PBE-SHA1-RC4-40", "pbeWithSHA1And40BitRC4", NID_pbe_WithSHA1And40BitRC4,
+     10, &kObjectData[766], 0},
+    {"PBE-SHA1-3DES", "pbeWithSHA1And3-KeyTripleDES-CBC",
+     NID_pbe_WithSHA1And3_Key_TripleDES_CBC, 10, &kObjectData[776], 0},
+    {"PBE-SHA1-2DES", "pbeWithSHA1And2-KeyTripleDES-CBC",
+     NID_pbe_WithSHA1And2_Key_TripleDES_CBC, 10, &kObjectData[786], 0},
+    {"PBE-SHA1-RC2-128", "pbeWithSHA1And128BitRC2-CBC",
+     NID_pbe_WithSHA1And128BitRC2_CBC, 10, &kObjectData[796], 0},
+    {"PBE-SHA1-RC2-40", "pbeWithSHA1And40BitRC2-CBC",
+     NID_pbe_WithSHA1And40BitRC2_CBC, 10, &kObjectData[806], 0},
+    {"keyBag", "keyBag", NID_keyBag, 11, &kObjectData[816], 0},
+    {"pkcs8ShroudedKeyBag", "pkcs8ShroudedKeyBag", NID_pkcs8ShroudedKeyBag, 11,
+     &kObjectData[827], 0},
+    {"certBag", "certBag", NID_certBag, 11, &kObjectData[838], 0},
+    {"crlBag", "crlBag", NID_crlBag, 11, &kObjectData[849], 0},
+    {"secretBag", "secretBag", NID_secretBag, 11, &kObjectData[860], 0},
+    {"safeContentsBag", "safeContentsBag", NID_safeContentsBag, 11,
+     &kObjectData[871], 0},
+    {"friendlyName", "friendlyName", NID_friendlyName, 9, &kObjectData[882], 0},
+    {"localKeyID", "localKeyID", NID_localKeyID, 9, &kObjectData[891], 0},
+    {"x509Certificate", "x509Certificate", NID_x509Certificate, 10,
+     &kObjectData[900], 0},
+    {"sdsiCertificate", "sdsiCertificate", NID_sdsiCertificate, 10,
+     &kObjectData[910], 0},
+    {"x509Crl", "x509Crl", NID_x509Crl, 10, &kObjectData[920], 0},
+    {"PBES2", "PBES2", NID_pbes2, 9, &kObjectData[930], 0},
+    {"PBMAC1", "PBMAC1", NID_pbmac1, 9, &kObjectData[939], 0},
+    {"hmacWithSHA1", "hmacWithSHA1", NID_hmacWithSHA1, 8, &kObjectData[948], 0},
+    {"id-qt-cps", "Policy Qualifier CPS", NID_id_qt_cps, 8, &kObjectData[956],
+     0},
+    {"id-qt-unotice", "Policy Qualifier User Notice", NID_id_qt_unotice, 8,
+     &kObjectData[964], 0},
+    {"RC2-64-CBC", "rc2-64-cbc", NID_rc2_64_cbc, 0, NULL, 0},
+    {"SMIME-CAPS", "S/MIME Capabilities", NID_SMIMECapabilities, 9,
+     &kObjectData[972], 0},
+    {"PBE-MD2-RC2-64", "pbeWithMD2AndRC2-CBC", NID_pbeWithMD2AndRC2_CBC, 9,
+     &kObjectData[981], 0},
+    {"PBE-MD5-RC2-64", "pbeWithMD5AndRC2-CBC", NID_pbeWithMD5AndRC2_CBC, 9,
+     &kObjectData[990], 0},
+    {"PBE-SHA1-DES", "pbeWithSHA1AndDES-CBC", NID_pbeWithSHA1AndDES_CBC, 9,
+     &kObjectData[999], 0},
+    {"msExtReq", "Microsoft Extension Request", NID_ms_ext_req, 10,
+     &kObjectData[1008], 0},
+    {"extReq", "Extension Request", NID_ext_req, 9, &kObjectData[1018], 0},
+    {"name", "name", NID_name, 3, &kObjectData[1027], 0},
+    {"dnQualifier", "dnQualifier", NID_dnQualifier, 3, &kObjectData[1030], 0},
+    {"id-pe", "id-pe", NID_id_pe, 7, &kObjectData[1033], 0},
+    {"id-ad", "id-ad", NID_id_ad, 7, &kObjectData[1040], 0},
+    {"authorityInfoAccess", "Authority Information Access", NID_info_access, 8,
+     &kObjectData[1047], 0},
+    {"OCSP", "OCSP", NID_ad_OCSP, 8, &kObjectData[1055], 0},
+    {"caIssuers", "CA Issuers", NID_ad_ca_issuers, 8, &kObjectData[1063], 0},
+    {"OCSPSigning", "OCSP Signing", NID_OCSP_sign, 8, &kObjectData[1071], 0},
+    {"ISO", "iso", NID_iso, 0, NULL, 0},
+    {"member-body", "ISO Member Body", NID_member_body, 1, &kObjectData[1079],
+     0},
+    {"ISO-US", "ISO US Member Body", NID_ISO_US, 3, &kObjectData[1080], 0},
+    {"X9-57", "X9.57", NID_X9_57, 5, &kObjectData[1083], 0},
+    {"X9cm", "X9.57 CM ?", NID_X9cm, 6, &kObjectData[1088], 0},
+    {"pkcs1", "pkcs1", NID_pkcs1, 8, &kObjectData[1094], 0},
+    {"pkcs5", "pkcs5", NID_pkcs5, 8, &kObjectData[1102], 0},
+    {"SMIME", "S/MIME", NID_SMIME, 9, &kObjectData[1110], 0},
+    {"id-smime-mod", "id-smime-mod", NID_id_smime_mod, 10, &kObjectData[1119],
+     0},
+    {"id-smime-ct", "id-smime-ct", NID_id_smime_ct, 10, &kObjectData[1129], 0},
+    {"id-smime-aa", "id-smime-aa", NID_id_smime_aa, 10, &kObjectData[1139], 0},
+    {"id-smime-alg", "id-smime-alg", NID_id_smime_alg, 10, &kObjectData[1149],
+     0},
+    {"id-smime-cd", "id-smime-cd", NID_id_smime_cd, 10, &kObjectData[1159], 0},
+    {"id-smime-spq", "id-smime-spq", NID_id_smime_spq, 10, &kObjectData[1169],
+     0},
+    {"id-smime-cti", "id-smime-cti", NID_id_smime_cti, 10, &kObjectData[1179],
+     0},
+    {"id-smime-mod-cms", "id-smime-mod-cms", NID_id_smime_mod_cms, 11,
+     &kObjectData[1189], 0},
+    {"id-smime-mod-ess", "id-smime-mod-ess", NID_id_smime_mod_ess, 11,
+     &kObjectData[1200], 0},
+    {"id-smime-mod-oid", "id-smime-mod-oid", NID_id_smime_mod_oid, 11,
+     &kObjectData[1211], 0},
+    {"id-smime-mod-msg-v3", "id-smime-mod-msg-v3", NID_id_smime_mod_msg_v3, 11,
+     &kObjectData[1222], 0},
+    {"id-smime-mod-ets-eSignature-88", "id-smime-mod-ets-eSignature-88",
+     NID_id_smime_mod_ets_eSignature_88, 11, &kObjectData[1233], 0},
+    {"id-smime-mod-ets-eSignature-97", "id-smime-mod-ets-eSignature-97",
+     NID_id_smime_mod_ets_eSignature_97, 11, &kObjectData[1244], 0},
+    {"id-smime-mod-ets-eSigPolicy-88", "id-smime-mod-ets-eSigPolicy-88",
+     NID_id_smime_mod_ets_eSigPolicy_88, 11, &kObjectData[1255], 0},
+    {"id-smime-mod-ets-eSigPolicy-97", "id-smime-mod-ets-eSigPolicy-97",
+     NID_id_smime_mod_ets_eSigPolicy_97, 11, &kObjectData[1266], 0},
+    {"id-smime-ct-receipt", "id-smime-ct-receipt", NID_id_smime_ct_receipt, 11,
+     &kObjectData[1277], 0},
+    {"id-smime-ct-authData", "id-smime-ct-authData", NID_id_smime_ct_authData,
+     11, &kObjectData[1288], 0},
+    {"id-smime-ct-publishCert", "id-smime-ct-publishCert",
+     NID_id_smime_ct_publishCert, 11, &kObjectData[1299], 0},
+    {"id-smime-ct-TSTInfo", "id-smime-ct-TSTInfo", NID_id_smime_ct_TSTInfo, 11,
+     &kObjectData[1310], 0},
+    {"id-smime-ct-TDTInfo", "id-smime-ct-TDTInfo", NID_id_smime_ct_TDTInfo, 11,
+     &kObjectData[1321], 0},
+    {"id-smime-ct-contentInfo", "id-smime-ct-contentInfo",
+     NID_id_smime_ct_contentInfo, 11, &kObjectData[1332], 0},
+    {"id-smime-ct-DVCSRequestData", "id-smime-ct-DVCSRequestData",
+     NID_id_smime_ct_DVCSRequestData, 11, &kObjectData[1343], 0},
+    {"id-smime-ct-DVCSResponseData", "id-smime-ct-DVCSResponseData",
+     NID_id_smime_ct_DVCSResponseData, 11, &kObjectData[1354], 0},
+    {"id-smime-aa-receiptRequest", "id-smime-aa-receiptRequest",
+     NID_id_smime_aa_receiptRequest, 11, &kObjectData[1365], 0},
+    {"id-smime-aa-securityLabel", "id-smime-aa-securityLabel",
+     NID_id_smime_aa_securityLabel, 11, &kObjectData[1376], 0},
+    {"id-smime-aa-mlExpandHistory", "id-smime-aa-mlExpandHistory",
+     NID_id_smime_aa_mlExpandHistory, 11, &kObjectData[1387], 0},
+    {"id-smime-aa-contentHint", "id-smime-aa-contentHint",
+     NID_id_smime_aa_contentHint, 11, &kObjectData[1398], 0},
+    {"id-smime-aa-msgSigDigest", "id-smime-aa-msgSigDigest",
+     NID_id_smime_aa_msgSigDigest, 11, &kObjectData[1409], 0},
+    {"id-smime-aa-encapContentType", "id-smime-aa-encapContentType",
+     NID_id_smime_aa_encapContentType, 11, &kObjectData[1420], 0},
+    {"id-smime-aa-contentIdentifier", "id-smime-aa-contentIdentifier",
+     NID_id_smime_aa_contentIdentifier, 11, &kObjectData[1431], 0},
+    {"id-smime-aa-macValue", "id-smime-aa-macValue", NID_id_smime_aa_macValue,
+     11, &kObjectData[1442], 0},
+    {"id-smime-aa-equivalentLabels", "id-smime-aa-equivalentLabels",
+     NID_id_smime_aa_equivalentLabels, 11, &kObjectData[1453], 0},
+    {"id-smime-aa-contentReference", "id-smime-aa-contentReference",
+     NID_id_smime_aa_contentReference, 11, &kObjectData[1464], 0},
+    {"id-smime-aa-encrypKeyPref", "id-smime-aa-encrypKeyPref",
+     NID_id_smime_aa_encrypKeyPref, 11, &kObjectData[1475], 0},
+    {"id-smime-aa-signingCertificate", "id-smime-aa-signingCertificate",
+     NID_id_smime_aa_signingCertificate, 11, &kObjectData[1486], 0},
+    {"id-smime-aa-smimeEncryptCerts", "id-smime-aa-smimeEncryptCerts",
+     NID_id_smime_aa_smimeEncryptCerts, 11, &kObjectData[1497], 0},
+    {"id-smime-aa-timeStampToken", "id-smime-aa-timeStampToken",
+     NID_id_smime_aa_timeStampToken, 11, &kObjectData[1508], 0},
+    {"id-smime-aa-ets-sigPolicyId", "id-smime-aa-ets-sigPolicyId",
+     NID_id_smime_aa_ets_sigPolicyId, 11, &kObjectData[1519], 0},
+    {"id-smime-aa-ets-commitmentType", "id-smime-aa-ets-commitmentType",
+     NID_id_smime_aa_ets_commitmentType, 11, &kObjectData[1530], 0},
+    {"id-smime-aa-ets-signerLocation", "id-smime-aa-ets-signerLocation",
+     NID_id_smime_aa_ets_signerLocation, 11, &kObjectData[1541], 0},
+    {"id-smime-aa-ets-signerAttr", "id-smime-aa-ets-signerAttr",
+     NID_id_smime_aa_ets_signerAttr, 11, &kObjectData[1552], 0},
+    {"id-smime-aa-ets-otherSigCert", "id-smime-aa-ets-otherSigCert",
+     NID_id_smime_aa_ets_otherSigCert, 11, &kObjectData[1563], 0},
+    {"id-smime-aa-ets-contentTimestamp", "id-smime-aa-ets-contentTimestamp",
+     NID_id_smime_aa_ets_contentTimestamp, 11, &kObjectData[1574], 0},
+    {"id-smime-aa-ets-CertificateRefs", "id-smime-aa-ets-CertificateRefs",
+     NID_id_smime_aa_ets_CertificateRefs, 11, &kObjectData[1585], 0},
+    {"id-smime-aa-ets-RevocationRefs", "id-smime-aa-ets-RevocationRefs",
+     NID_id_smime_aa_ets_RevocationRefs, 11, &kObjectData[1596], 0},
+    {"id-smime-aa-ets-certValues", "id-smime-aa-ets-certValues",
+     NID_id_smime_aa_ets_certValues, 11, &kObjectData[1607], 0},
+    {"id-smime-aa-ets-revocationValues", "id-smime-aa-ets-revocationValues",
+     NID_id_smime_aa_ets_revocationValues, 11, &kObjectData[1618], 0},
+    {"id-smime-aa-ets-escTimeStamp", "id-smime-aa-ets-escTimeStamp",
+     NID_id_smime_aa_ets_escTimeStamp, 11, &kObjectData[1629], 0},
+    {"id-smime-aa-ets-certCRLTimestamp", "id-smime-aa-ets-certCRLTimestamp",
+     NID_id_smime_aa_ets_certCRLTimestamp, 11, &kObjectData[1640], 0},
+    {"id-smime-aa-ets-archiveTimeStamp", "id-smime-aa-ets-archiveTimeStamp",
+     NID_id_smime_aa_ets_archiveTimeStamp, 11, &kObjectData[1651], 0},
+    {"id-smime-aa-signatureType", "id-smime-aa-signatureType",
+     NID_id_smime_aa_signatureType, 11, &kObjectData[1662], 0},
+    {"id-smime-aa-dvcs-dvc", "id-smime-aa-dvcs-dvc", NID_id_smime_aa_dvcs_dvc,
+     11, &kObjectData[1673], 0},
+    {"id-smime-alg-ESDHwith3DES", "id-smime-alg-ESDHwith3DES",
+     NID_id_smime_alg_ESDHwith3DES, 11, &kObjectData[1684], 0},
+    {"id-smime-alg-ESDHwithRC2", "id-smime-alg-ESDHwithRC2",
+     NID_id_smime_alg_ESDHwithRC2, 11, &kObjectData[1695], 0},
+    {"id-smime-alg-3DESwrap", "id-smime-alg-3DESwrap",
+     NID_id_smime_alg_3DESwrap, 11, &kObjectData[1706], 0},
+    {"id-smime-alg-RC2wrap", "id-smime-alg-RC2wrap", NID_id_smime_alg_RC2wrap,
+     11, &kObjectData[1717], 0},
+    {"id-smime-alg-ESDH", "id-smime-alg-ESDH", NID_id_smime_alg_ESDH, 11,
+     &kObjectData[1728], 0},
+    {"id-smime-alg-CMS3DESwrap", "id-smime-alg-CMS3DESwrap",
+     NID_id_smime_alg_CMS3DESwrap, 11, &kObjectData[1739], 0},
+    {"id-smime-alg-CMSRC2wrap", "id-smime-alg-CMSRC2wrap",
+     NID_id_smime_alg_CMSRC2wrap, 11, &kObjectData[1750], 0},
+    {"id-smime-cd-ldap", "id-smime-cd-ldap", NID_id_smime_cd_ldap, 11,
+     &kObjectData[1761], 0},
+    {"id-smime-spq-ets-sqt-uri", "id-smime-spq-ets-sqt-uri",
+     NID_id_smime_spq_ets_sqt_uri, 11, &kObjectData[1772], 0},
+    {"id-smime-spq-ets-sqt-unotice", "id-smime-spq-ets-sqt-unotice",
+     NID_id_smime_spq_ets_sqt_unotice, 11, &kObjectData[1783], 0},
+    {"id-smime-cti-ets-proofOfOrigin", "id-smime-cti-ets-proofOfOrigin",
+     NID_id_smime_cti_ets_proofOfOrigin, 11, &kObjectData[1794], 0},
+    {"id-smime-cti-ets-proofOfReceipt", "id-smime-cti-ets-proofOfReceipt",
+     NID_id_smime_cti_ets_proofOfReceipt, 11, &kObjectData[1805], 0},
+    {"id-smime-cti-ets-proofOfDelivery", "id-smime-cti-ets-proofOfDelivery",
+     NID_id_smime_cti_ets_proofOfDelivery, 11, &kObjectData[1816], 0},
+    {"id-smime-cti-ets-proofOfSender", "id-smime-cti-ets-proofOfSender",
+     NID_id_smime_cti_ets_proofOfSender, 11, &kObjectData[1827], 0},
+    {"id-smime-cti-ets-proofOfApproval", "id-smime-cti-ets-proofOfApproval",
+     NID_id_smime_cti_ets_proofOfApproval, 11, &kObjectData[1838], 0},
+    {"id-smime-cti-ets-proofOfCreation", "id-smime-cti-ets-proofOfCreation",
+     NID_id_smime_cti_ets_proofOfCreation, 11, &kObjectData[1849], 0},
+    {"MD4", "md4", NID_md4, 8, &kObjectData[1860], 0},
+    {"id-pkix-mod", "id-pkix-mod", NID_id_pkix_mod, 7, &kObjectData[1868], 0},
+    {"id-qt", "id-qt", NID_id_qt, 7, &kObjectData[1875], 0},
+    {"id-it", "id-it", NID_id_it, 7, &kObjectData[1882], 0},
+    {"id-pkip", "id-pkip", NID_id_pkip, 7, &kObjectData[1889], 0},
+    {"id-alg", "id-alg", NID_id_alg, 7, &kObjectData[1896], 0},
+    {"id-cmc", "id-cmc", NID_id_cmc, 7, &kObjectData[1903], 0},
+    {"id-on", "id-on", NID_id_on, 7, &kObjectData[1910], 0},
+    {"id-pda", "id-pda", NID_id_pda, 7, &kObjectData[1917], 0},
+    {"id-aca", "id-aca", NID_id_aca, 7, &kObjectData[1924], 0},
+    {"id-qcs", "id-qcs", NID_id_qcs, 7, &kObjectData[1931], 0},
+    {"id-cct", "id-cct", NID_id_cct, 7, &kObjectData[1938], 0},
+    {"id-pkix1-explicit-88", "id-pkix1-explicit-88", NID_id_pkix1_explicit_88,
+     8, &kObjectData[1945], 0},
+    {"id-pkix1-implicit-88", "id-pkix1-implicit-88", NID_id_pkix1_implicit_88,
+     8, &kObjectData[1953], 0},
+    {"id-pkix1-explicit-93", "id-pkix1-explicit-93", NID_id_pkix1_explicit_93,
+     8, &kObjectData[1961], 0},
+    {"id-pkix1-implicit-93", "id-pkix1-implicit-93", NID_id_pkix1_implicit_93,
+     8, &kObjectData[1969], 0},
+    {"id-mod-crmf", "id-mod-crmf", NID_id_mod_crmf, 8, &kObjectData[1977], 0},
+    {"id-mod-cmc", "id-mod-cmc", NID_id_mod_cmc, 8, &kObjectData[1985], 0},
+    {"id-mod-kea-profile-88", "id-mod-kea-profile-88",
+     NID_id_mod_kea_profile_88, 8, &kObjectData[1993], 0},
+    {"id-mod-kea-profile-93", "id-mod-kea-profile-93",
+     NID_id_mod_kea_profile_93, 8, &kObjectData[2001], 0},
+    {"id-mod-cmp", "id-mod-cmp", NID_id_mod_cmp, 8, &kObjectData[2009], 0},
+    {"id-mod-qualified-cert-88", "id-mod-qualified-cert-88",
+     NID_id_mod_qualified_cert_88, 8, &kObjectData[2017], 0},
+    {"id-mod-qualified-cert-93", "id-mod-qualified-cert-93",
+     NID_id_mod_qualified_cert_93, 8, &kObjectData[2025], 0},
+    {"id-mod-attribute-cert", "id-mod-attribute-cert",
+     NID_id_mod_attribute_cert, 8, &kObjectData[2033], 0},
+    {"id-mod-timestamp-protocol", "id-mod-timestamp-protocol",
+     NID_id_mod_timestamp_protocol, 8, &kObjectData[2041], 0},
+    {"id-mod-ocsp", "id-mod-ocsp", NID_id_mod_ocsp, 8, &kObjectData[2049], 0},
+    {"id-mod-dvcs", "id-mod-dvcs", NID_id_mod_dvcs, 8, &kObjectData[2057], 0},
+    {"id-mod-cmp2000", "id-mod-cmp2000", NID_id_mod_cmp2000, 8,
+     &kObjectData[2065], 0},
+    {"biometricInfo", "Biometric Info", NID_biometricInfo, 8,
+     &kObjectData[2073], 0},
+    {"qcStatements", "qcStatements", NID_qcStatements, 8, &kObjectData[2081],
+     0},
+    {"ac-auditEntity", "ac-auditEntity", NID_ac_auditEntity, 8,
+     &kObjectData[2089], 0},
+    {"ac-targeting", "ac-targeting", NID_ac_targeting, 8, &kObjectData[2097],
+     0},
+    {"aaControls", "aaControls", NID_aaControls, 8, &kObjectData[2105], 0},
+    {"sbgp-ipAddrBlock", "sbgp-ipAddrBlock", NID_sbgp_ipAddrBlock, 8,
+     &kObjectData[2113], 0},
+    {"sbgp-autonomousSysNum", "sbgp-autonomousSysNum",
+     NID_sbgp_autonomousSysNum, 8, &kObjectData[2121], 0},
+    {"sbgp-routerIdentifier", "sbgp-routerIdentifier",
+     NID_sbgp_routerIdentifier, 8, &kObjectData[2129], 0},
+    {"textNotice", "textNotice", NID_textNotice, 8, &kObjectData[2137], 0},
+    {"ipsecEndSystem", "IPSec End System", NID_ipsecEndSystem, 8,
+     &kObjectData[2145], 0},
+    {"ipsecTunnel", "IPSec Tunnel", NID_ipsecTunnel, 8, &kObjectData[2153], 0},
+    {"ipsecUser", "IPSec User", NID_ipsecUser, 8, &kObjectData[2161], 0},
+    {"DVCS", "dvcs", NID_dvcs, 8, &kObjectData[2169], 0},
+    {"id-it-caProtEncCert", "id-it-caProtEncCert", NID_id_it_caProtEncCert, 8,
+     &kObjectData[2177], 0},
+    {"id-it-signKeyPairTypes", "id-it-signKeyPairTypes",
+     NID_id_it_signKeyPairTypes, 8, &kObjectData[2185], 0},
+    {"id-it-encKeyPairTypes", "id-it-encKeyPairTypes",
+     NID_id_it_encKeyPairTypes, 8, &kObjectData[2193], 0},
+    {"id-it-preferredSymmAlg", "id-it-preferredSymmAlg",
+     NID_id_it_preferredSymmAlg, 8, &kObjectData[2201], 0},
+    {"id-it-caKeyUpdateInfo", "id-it-caKeyUpdateInfo",
+     NID_id_it_caKeyUpdateInfo, 8, &kObjectData[2209], 0},
+    {"id-it-currentCRL", "id-it-currentCRL", NID_id_it_currentCRL, 8,
+     &kObjectData[2217], 0},
+    {"id-it-unsupportedOIDs", "id-it-unsupportedOIDs",
+     NID_id_it_unsupportedOIDs, 8, &kObjectData[2225], 0},
+    {"id-it-subscriptionRequest", "id-it-subscriptionRequest",
+     NID_id_it_subscriptionRequest, 8, &kObjectData[2233], 0},
+    {"id-it-subscriptionResponse", "id-it-subscriptionResponse",
+     NID_id_it_subscriptionResponse, 8, &kObjectData[2241], 0},
+    {"id-it-keyPairParamReq", "id-it-keyPairParamReq",
+     NID_id_it_keyPairParamReq, 8, &kObjectData[2249], 0},
+    {"id-it-keyPairParamRep", "id-it-keyPairParamRep",
+     NID_id_it_keyPairParamRep, 8, &kObjectData[2257], 0},
+    {"id-it-revPassphrase", "id-it-revPassphrase", NID_id_it_revPassphrase, 8,
+     &kObjectData[2265], 0},
+    {"id-it-implicitConfirm", "id-it-implicitConfirm",
+     NID_id_it_implicitConfirm, 8, &kObjectData[2273], 0},
+    {"id-it-confirmWaitTime", "id-it-confirmWaitTime",
+     NID_id_it_confirmWaitTime, 8, &kObjectData[2281], 0},
+    {"id-it-origPKIMessage", "id-it-origPKIMessage", NID_id_it_origPKIMessage,
+     8, &kObjectData[2289], 0},
+    {"id-regCtrl", "id-regCtrl", NID_id_regCtrl, 8, &kObjectData[2297], 0},
+    {"id-regInfo", "id-regInfo", NID_id_regInfo, 8, &kObjectData[2305], 0},
+    {"id-regCtrl-regToken", "id-regCtrl-regToken", NID_id_regCtrl_regToken, 9,
+     &kObjectData[2313], 0},
+    {"id-regCtrl-authenticator", "id-regCtrl-authenticator",
+     NID_id_regCtrl_authenticator, 9, &kObjectData[2322], 0},
+    {"id-regCtrl-pkiPublicationInfo", "id-regCtrl-pkiPublicationInfo",
+     NID_id_regCtrl_pkiPublicationInfo, 9, &kObjectData[2331], 0},
+    {"id-regCtrl-pkiArchiveOptions", "id-regCtrl-pkiArchiveOptions",
+     NID_id_regCtrl_pkiArchiveOptions, 9, &kObjectData[2340], 0},
+    {"id-regCtrl-oldCertID", "id-regCtrl-oldCertID", NID_id_regCtrl_oldCertID,
+     9, &kObjectData[2349], 0},
+    {"id-regCtrl-protocolEncrKey", "id-regCtrl-protocolEncrKey",
+     NID_id_regCtrl_protocolEncrKey, 9, &kObjectData[2358], 0},
+    {"id-regInfo-utf8Pairs", "id-regInfo-utf8Pairs", NID_id_regInfo_utf8Pairs,
+     9, &kObjectData[2367], 0},
+    {"id-regInfo-certReq", "id-regInfo-certReq", NID_id_regInfo_certReq, 9,
+     &kObjectData[2376], 0},
+    {"id-alg-des40", "id-alg-des40", NID_id_alg_des40, 8, &kObjectData[2385],
+     0},
+    {"id-alg-noSignature", "id-alg-noSignature", NID_id_alg_noSignature, 8,
+     &kObjectData[2393], 0},
+    {"id-alg-dh-sig-hmac-sha1", "id-alg-dh-sig-hmac-sha1",
+     NID_id_alg_dh_sig_hmac_sha1, 8, &kObjectData[2401], 0},
+    {"id-alg-dh-pop", "id-alg-dh-pop", NID_id_alg_dh_pop, 8, &kObjectData[2409],
+     0},
+    {"id-cmc-statusInfo", "id-cmc-statusInfo", NID_id_cmc_statusInfo, 8,
+     &kObjectData[2417], 0},
+    {"id-cmc-identification", "id-cmc-identification",
+     NID_id_cmc_identification, 8, &kObjectData[2425], 0},
+    {"id-cmc-identityProof", "id-cmc-identityProof", NID_id_cmc_identityProof,
+     8, &kObjectData[2433], 0},
+    {"id-cmc-dataReturn", "id-cmc-dataReturn", NID_id_cmc_dataReturn, 8,
+     &kObjectData[2441], 0},
+    {"id-cmc-transactionId", "id-cmc-transactionId", NID_id_cmc_transactionId,
+     8, &kObjectData[2449], 0},
+    {"id-cmc-senderNonce", "id-cmc-senderNonce", NID_id_cmc_senderNonce, 8,
+     &kObjectData[2457], 0},
+    {"id-cmc-recipientNonce", "id-cmc-recipientNonce",
+     NID_id_cmc_recipientNonce, 8, &kObjectData[2465], 0},
+    {"id-cmc-addExtensions", "id-cmc-addExtensions", NID_id_cmc_addExtensions,
+     8, &kObjectData[2473], 0},
+    {"id-cmc-encryptedPOP", "id-cmc-encryptedPOP", NID_id_cmc_encryptedPOP, 8,
+     &kObjectData[2481], 0},
+    {"id-cmc-decryptedPOP", "id-cmc-decryptedPOP", NID_id_cmc_decryptedPOP, 8,
+     &kObjectData[2489], 0},
+    {"id-cmc-lraPOPWitness", "id-cmc-lraPOPWitness", NID_id_cmc_lraPOPWitness,
+     8, &kObjectData[2497], 0},
+    {"id-cmc-getCert", "id-cmc-getCert", NID_id_cmc_getCert, 8,
+     &kObjectData[2505], 0},
+    {"id-cmc-getCRL", "id-cmc-getCRL", NID_id_cmc_getCRL, 8, &kObjectData[2513],
+     0},
+    {"id-cmc-revokeRequest", "id-cmc-revokeRequest", NID_id_cmc_revokeRequest,
+     8, &kObjectData[2521], 0},
+    {"id-cmc-regInfo", "id-cmc-regInfo", NID_id_cmc_regInfo, 8,
+     &kObjectData[2529], 0},
+    {"id-cmc-responseInfo", "id-cmc-responseInfo", NID_id_cmc_responseInfo, 8,
+     &kObjectData[2537], 0},
+    {"id-cmc-queryPending", "id-cmc-queryPending", NID_id_cmc_queryPending, 8,
+     &kObjectData[2545], 0},
+    {"id-cmc-popLinkRandom", "id-cmc-popLinkRandom", NID_id_cmc_popLinkRandom,
+     8, &kObjectData[2553], 0},
+    {"id-cmc-popLinkWitness", "id-cmc-popLinkWitness",
+     NID_id_cmc_popLinkWitness, 8, &kObjectData[2561], 0},
+    {"id-cmc-confirmCertAcceptance", "id-cmc-confirmCertAcceptance",
+     NID_id_cmc_confirmCertAcceptance, 8, &kObjectData[2569], 0},
+    {"id-on-personalData", "id-on-personalData", NID_id_on_personalData, 8,
+     &kObjectData[2577], 0},
+    {"id-pda-dateOfBirth", "id-pda-dateOfBirth", NID_id_pda_dateOfBirth, 8,
+     &kObjectData[2585], 0},
+    {"id-pda-placeOfBirth", "id-pda-placeOfBirth", NID_id_pda_placeOfBirth, 8,
+     &kObjectData[2593], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"id-pda-gender", "id-pda-gender", NID_id_pda_gender, 8, &kObjectData[2601],
+     0},
+    {"id-pda-countryOfCitizenship", "id-pda-countryOfCitizenship",
+     NID_id_pda_countryOfCitizenship, 8, &kObjectData[2609], 0},
+    {"id-pda-countryOfResidence", "id-pda-countryOfResidence",
+     NID_id_pda_countryOfResidence, 8, &kObjectData[2617], 0},
+    {"id-aca-authenticationInfo", "id-aca-authenticationInfo",
+     NID_id_aca_authenticationInfo, 8, &kObjectData[2625], 0},
+    {"id-aca-accessIdentity", "id-aca-accessIdentity",
+     NID_id_aca_accessIdentity, 8, &kObjectData[2633], 0},
+    {"id-aca-chargingIdentity", "id-aca-chargingIdentity",
+     NID_id_aca_chargingIdentity, 8, &kObjectData[2641], 0},
+    {"id-aca-group", "id-aca-group", NID_id_aca_group, 8, &kObjectData[2649],
+     0},
+    {"id-aca-role", "id-aca-role", NID_id_aca_role, 8, &kObjectData[2657], 0},
+    {"id-qcs-pkixQCSyntax-v1", "id-qcs-pkixQCSyntax-v1",
+     NID_id_qcs_pkixQCSyntax_v1, 8, &kObjectData[2665], 0},
+    {"id-cct-crs", "id-cct-crs", NID_id_cct_crs, 8, &kObjectData[2673], 0},
+    {"id-cct-PKIData", "id-cct-PKIData", NID_id_cct_PKIData, 8,
+     &kObjectData[2681], 0},
+    {"id-cct-PKIResponse", "id-cct-PKIResponse", NID_id_cct_PKIResponse, 8,
+     &kObjectData[2689], 0},
+    {"ad_timestamping", "AD Time Stamping", NID_ad_timeStamping, 8,
+     &kObjectData[2697], 0},
+    {"AD_DVCS", "ad dvcs", NID_ad_dvcs, 8, &kObjectData[2705], 0},
+    {"basicOCSPResponse", "Basic OCSP Response", NID_id_pkix_OCSP_basic, 9,
+     &kObjectData[2713], 0},
+    {"Nonce", "OCSP Nonce", NID_id_pkix_OCSP_Nonce, 9, &kObjectData[2722], 0},
+    {"CrlID", "OCSP CRL ID", NID_id_pkix_OCSP_CrlID, 9, &kObjectData[2731], 0},
+    {"acceptableResponses", "Acceptable OCSP Responses",
+     NID_id_pkix_OCSP_acceptableResponses, 9, &kObjectData[2740], 0},
+    {"noCheck", "OCSP No Check", NID_id_pkix_OCSP_noCheck, 9,
+     &kObjectData[2749], 0},
+    {"archiveCutoff", "OCSP Archive Cutoff", NID_id_pkix_OCSP_archiveCutoff, 9,
+     &kObjectData[2758], 0},
+    {"serviceLocator", "OCSP Service Locator", NID_id_pkix_OCSP_serviceLocator,
+     9, &kObjectData[2767], 0},
+    {"extendedStatus", "Extended OCSP Status", NID_id_pkix_OCSP_extendedStatus,
+     9, &kObjectData[2776], 0},
+    {"valid", "valid", NID_id_pkix_OCSP_valid, 9, &kObjectData[2785], 0},
+    {"path", "path", NID_id_pkix_OCSP_path, 9, &kObjectData[2794], 0},
+    {"trustRoot", "Trust Root", NID_id_pkix_OCSP_trustRoot, 9,
+     &kObjectData[2803], 0},
+    {"algorithm", "algorithm", NID_algorithm, 4, &kObjectData[2812], 0},
+    {"rsaSignature", "rsaSignature", NID_rsaSignature, 5, &kObjectData[2816],
+     0},
+    {"X500algorithms", "directory services - algorithms", NID_X500algorithms, 2,
+     &kObjectData[2821], 0},
+    {"ORG", "org", NID_org, 1, &kObjectData[2823], 0},
+    {"DOD", "dod", NID_dod, 2, &kObjectData[2824], 0},
+    {"IANA", "iana", NID_iana, 3, &kObjectData[2826], 0},
+    {"directory", "Directory", NID_Directory, 4, &kObjectData[2829], 0},
+    {"mgmt", "Management", NID_Management, 4, &kObjectData[2833], 0},
+    {"experimental", "Experimental", NID_Experimental, 4, &kObjectData[2837],
+     0},
+    {"private", "Private", NID_Private, 4, &kObjectData[2841], 0},
+    {"security", "Security", NID_Security, 4, &kObjectData[2845], 0},
+    {"snmpv2", "SNMPv2", NID_SNMPv2, 4, &kObjectData[2849], 0},
+    {"Mail", "Mail", NID_Mail, 4, &kObjectData[2853], 0},
+    {"enterprises", "Enterprises", NID_Enterprises, 5, &kObjectData[2857], 0},
+    {"dcobject", "dcObject", NID_dcObject, 9, &kObjectData[2862], 0},
+    {"DC", "domainComponent", NID_domainComponent, 10, &kObjectData[2871], 0},
+    {"domain", "Domain", NID_Domain, 10, &kObjectData[2881], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"selected-attribute-types", "Selected Attribute Types",
+     NID_selected_attribute_types, 3, &kObjectData[2891], 0},
+    {"clearance", "clearance", NID_clearance, 4, &kObjectData[2894], 0},
+    {"RSA-MD4", "md4WithRSAEncryption", NID_md4WithRSAEncryption, 9,
+     &kObjectData[2898], 0},
+    {"ac-proxying", "ac-proxying", NID_ac_proxying, 8, &kObjectData[2907], 0},
+    {"subjectInfoAccess", "Subject Information Access", NID_sinfo_access, 8,
+     &kObjectData[2915], 0},
+    {"id-aca-encAttrs", "id-aca-encAttrs", NID_id_aca_encAttrs, 8,
+     &kObjectData[2923], 0},
+    {"role", "role", NID_role, 3, &kObjectData[2931], 0},
+    {"policyConstraints", "X509v3 Policy Constraints", NID_policy_constraints,
+     3, &kObjectData[2934], 0},
+    {"targetInformation", "X509v3 AC Targeting", NID_target_information, 3,
+     &kObjectData[2937], 0},
+    {"noRevAvail", "X509v3 No Revocation Available", NID_no_rev_avail, 3,
+     &kObjectData[2940], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"ansi-X9-62", "ANSI X9.62", NID_ansi_X9_62, 5, &kObjectData[2943], 0},
+    {"prime-field", "prime-field", NID_X9_62_prime_field, 7, &kObjectData[2948],
+     0},
+    {"characteristic-two-field", "characteristic-two-field",
+     NID_X9_62_characteristic_two_field, 7, &kObjectData[2955], 0},
+    {"id-ecPublicKey", "id-ecPublicKey", NID_X9_62_id_ecPublicKey, 7,
+     &kObjectData[2962], 0},
+    {"prime192v1", "prime192v1", NID_X9_62_prime192v1, 8, &kObjectData[2969],
+     0},
+    {"prime192v2", "prime192v2", NID_X9_62_prime192v2, 8, &kObjectData[2977],
+     0},
+    {"prime192v3", "prime192v3", NID_X9_62_prime192v3, 8, &kObjectData[2985],
+     0},
+    {"prime239v1", "prime239v1", NID_X9_62_prime239v1, 8, &kObjectData[2993],
+     0},
+    {"prime239v2", "prime239v2", NID_X9_62_prime239v2, 8, &kObjectData[3001],
+     0},
+    {"prime239v3", "prime239v3", NID_X9_62_prime239v3, 8, &kObjectData[3009],
+     0},
+    {"prime256v1", "prime256v1", NID_X9_62_prime256v1, 8, &kObjectData[3017],
+     0},
+    {"ecdsa-with-SHA1", "ecdsa-with-SHA1", NID_ecdsa_with_SHA1, 7,
+     &kObjectData[3025], 0},
+    {"CSPName", "Microsoft CSP Name", NID_ms_csp_name, 9, &kObjectData[3032],
+     0},
+    {"AES-128-ECB", "aes-128-ecb", NID_aes_128_ecb, 9, &kObjectData[3041], 0},
+    {"AES-128-CBC", "aes-128-cbc", NID_aes_128_cbc, 9, &kObjectData[3050], 0},
+    {"AES-128-OFB", "aes-128-ofb", NID_aes_128_ofb128, 9, &kObjectData[3059],
+     0},
+    {"AES-128-CFB", "aes-128-cfb", NID_aes_128_cfb128, 9, &kObjectData[3068],
+     0},
+    {"AES-192-ECB", "aes-192-ecb", NID_aes_192_ecb, 9, &kObjectData[3077], 0},
+    {"AES-192-CBC", "aes-192-cbc", NID_aes_192_cbc, 9, &kObjectData[3086], 0},
+    {"AES-192-OFB", "aes-192-ofb", NID_aes_192_ofb128, 9, &kObjectData[3095],
+     0},
+    {"AES-192-CFB", "aes-192-cfb", NID_aes_192_cfb128, 9, &kObjectData[3104],
+     0},
+    {"AES-256-ECB", "aes-256-ecb", NID_aes_256_ecb, 9, &kObjectData[3113], 0},
+    {"AES-256-CBC", "aes-256-cbc", NID_aes_256_cbc, 9, &kObjectData[3122], 0},
+    {"AES-256-OFB", "aes-256-ofb", NID_aes_256_ofb128, 9, &kObjectData[3131],
+     0},
+    {"AES-256-CFB", "aes-256-cfb", NID_aes_256_cfb128, 9, &kObjectData[3140],
+     0},
+    {"holdInstructionCode", "Hold Instruction Code", NID_hold_instruction_code,
+     3, &kObjectData[3149], 0},
+    {"holdInstructionNone", "Hold Instruction None", NID_hold_instruction_none,
+     7, &kObjectData[3152], 0},
+    {"holdInstructionCallIssuer", "Hold Instruction Call Issuer",
+     NID_hold_instruction_call_issuer, 7, &kObjectData[3159], 0},
+    {"holdInstructionReject", "Hold Instruction Reject",
+     NID_hold_instruction_reject, 7, &kObjectData[3166], 0},
+    {"data", "data", NID_data, 1, &kObjectData[3173], 0},
+    {"pss", "pss", NID_pss, 3, &kObjectData[3174], 0},
+    {"ucl", "ucl", NID_ucl, 7, &kObjectData[3177], 0},
+    {"pilot", "pilot", NID_pilot, 8, &kObjectData[3184], 0},
+    {"pilotAttributeType", "pilotAttributeType", NID_pilotAttributeType, 9,
+     &kObjectData[3192], 0},
+    {"pilotAttributeSyntax", "pilotAttributeSyntax", NID_pilotAttributeSyntax,
+     9, &kObjectData[3201], 0},
+    {"pilotObjectClass", "pilotObjectClass", NID_pilotObjectClass, 9,
+     &kObjectData[3210], 0},
+    {"pilotGroups", "pilotGroups", NID_pilotGroups, 9, &kObjectData[3219], 0},
+    {"iA5StringSyntax", "iA5StringSyntax", NID_iA5StringSyntax, 10,
+     &kObjectData[3228], 0},
+    {"caseIgnoreIA5StringSyntax", "caseIgnoreIA5StringSyntax",
+     NID_caseIgnoreIA5StringSyntax, 10, &kObjectData[3238], 0},
+    {"pilotObject", "pilotObject", NID_pilotObject, 10, &kObjectData[3248], 0},
+    {"pilotPerson", "pilotPerson", NID_pilotPerson, 10, &kObjectData[3258], 0},
+    {"account", "account", NID_account, 10, &kObjectData[3268], 0},
+    {"document", "document", NID_document, 10, &kObjectData[3278], 0},
+    {"room", "room", NID_room, 10, &kObjectData[3288], 0},
+    {"documentSeries", "documentSeries", NID_documentSeries, 10,
+     &kObjectData[3298], 0},
+    {"rFC822localPart", "rFC822localPart", NID_rFC822localPart, 10,
+     &kObjectData[3308], 0},
+    {"dNSDomain", "dNSDomain", NID_dNSDomain, 10, &kObjectData[3318], 0},
+    {"domainRelatedObject", "domainRelatedObject", NID_domainRelatedObject, 10,
+     &kObjectData[3328], 0},
+    {"friendlyCountry", "friendlyCountry", NID_friendlyCountry, 10,
+     &kObjectData[3338], 0},
+    {"simpleSecurityObject", "simpleSecurityObject", NID_simpleSecurityObject,
+     10, &kObjectData[3348], 0},
+    {"pilotOrganization", "pilotOrganization", NID_pilotOrganization, 10,
+     &kObjectData[3358], 0},
+    {"pilotDSA", "pilotDSA", NID_pilotDSA, 10, &kObjectData[3368], 0},
+    {"qualityLabelledData", "qualityLabelledData", NID_qualityLabelledData, 10,
+     &kObjectData[3378], 0},
+    {"UID", "userId", NID_userId, 10, &kObjectData[3388], 0},
+    {"textEncodedORAddress", "textEncodedORAddress", NID_textEncodedORAddress,
+     10, &kObjectData[3398], 0},
+    {"mail", "rfc822Mailbox", NID_rfc822Mailbox, 10, &kObjectData[3408], 0},
+    {"info", "info", NID_info, 10, &kObjectData[3418], 0},
+    {"favouriteDrink", "favouriteDrink", NID_favouriteDrink, 10,
+     &kObjectData[3428], 0},
+    {"roomNumber", "roomNumber", NID_roomNumber, 10, &kObjectData[3438], 0},
+    {"photo", "photo", NID_photo, 10, &kObjectData[3448], 0},
+    {"userClass", "userClass", NID_userClass, 10, &kObjectData[3458], 0},
+    {"host", "host", NID_host, 10, &kObjectData[3468], 0},
+    {"manager", "manager", NID_manager, 10, &kObjectData[3478], 0},
+    {"documentIdentifier", "documentIdentifier", NID_documentIdentifier, 10,
+     &kObjectData[3488], 0},
+    {"documentTitle", "documentTitle", NID_documentTitle, 10,
+     &kObjectData[3498], 0},
+    {"documentVersion", "documentVersion", NID_documentVersion, 10,
+     &kObjectData[3508], 0},
+    {"documentAuthor", "documentAuthor", NID_documentAuthor, 10,
+     &kObjectData[3518], 0},
+    {"documentLocation", "documentLocation", NID_documentLocation, 10,
+     &kObjectData[3528], 0},
+    {"homeTelephoneNumber", "homeTelephoneNumber", NID_homeTelephoneNumber, 10,
+     &kObjectData[3538], 0},
+    {"secretary", "secretary", NID_secretary, 10, &kObjectData[3548], 0},
+    {"otherMailbox", "otherMailbox", NID_otherMailbox, 10, &kObjectData[3558],
+     0},
+    {"lastModifiedTime", "lastModifiedTime", NID_lastModifiedTime, 10,
+     &kObjectData[3568], 0},
+    {"lastModifiedBy", "lastModifiedBy", NID_lastModifiedBy, 10,
+     &kObjectData[3578], 0},
+    {"aRecord", "aRecord", NID_aRecord, 10, &kObjectData[3588], 0},
+    {"pilotAttributeType27", "pilotAttributeType27", NID_pilotAttributeType27,
+     10, &kObjectData[3598], 0},
+    {"mXRecord", "mXRecord", NID_mXRecord, 10, &kObjectData[3608], 0},
+    {"nSRecord", "nSRecord", NID_nSRecord, 10, &kObjectData[3618], 0},
+    {"sOARecord", "sOARecord", NID_sOARecord, 10, &kObjectData[3628], 0},
+    {"cNAMERecord", "cNAMERecord", NID_cNAMERecord, 10, &kObjectData[3638], 0},
+    {"associatedDomain", "associatedDomain", NID_associatedDomain, 10,
+     &kObjectData[3648], 0},
+    {"associatedName", "associatedName", NID_associatedName, 10,
+     &kObjectData[3658], 0},
+    {"homePostalAddress", "homePostalAddress", NID_homePostalAddress, 10,
+     &kObjectData[3668], 0},
+    {"personalTitle", "personalTitle", NID_personalTitle, 10,
+     &kObjectData[3678], 0},
+    {"mobileTelephoneNumber", "mobileTelephoneNumber",
+     NID_mobileTelephoneNumber, 10, &kObjectData[3688], 0},
+    {"pagerTelephoneNumber", "pagerTelephoneNumber", NID_pagerTelephoneNumber,
+     10, &kObjectData[3698], 0},
+    {"friendlyCountryName", "friendlyCountryName", NID_friendlyCountryName, 10,
+     &kObjectData[3708], 0},
+    {"organizationalStatus", "organizationalStatus", NID_organizationalStatus,
+     10, &kObjectData[3718], 0},
+    {"janetMailbox", "janetMailbox", NID_janetMailbox, 10, &kObjectData[3728],
+     0},
+    {"mailPreferenceOption", "mailPreferenceOption", NID_mailPreferenceOption,
+     10, &kObjectData[3738], 0},
+    {"buildingName", "buildingName", NID_buildingName, 10, &kObjectData[3748],
+     0},
+    {"dSAQuality", "dSAQuality", NID_dSAQuality, 10, &kObjectData[3758], 0},
+    {"singleLevelQuality", "singleLevelQuality", NID_singleLevelQuality, 10,
+     &kObjectData[3768], 0},
+    {"subtreeMinimumQuality", "subtreeMinimumQuality",
+     NID_subtreeMinimumQuality, 10, &kObjectData[3778], 0},
+    {"subtreeMaximumQuality", "subtreeMaximumQuality",
+     NID_subtreeMaximumQuality, 10, &kObjectData[3788], 0},
+    {"personalSignature", "personalSignature", NID_personalSignature, 10,
+     &kObjectData[3798], 0},
+    {"dITRedirect", "dITRedirect", NID_dITRedirect, 10, &kObjectData[3808], 0},
+    {"audio", "audio", NID_audio, 10, &kObjectData[3818], 0},
+    {"documentPublisher", "documentPublisher", NID_documentPublisher, 10,
+     &kObjectData[3828], 0},
+    {"x500UniqueIdentifier", "x500UniqueIdentifier", NID_x500UniqueIdentifier,
+     3, &kObjectData[3838], 0},
+    {"mime-mhs", "MIME MHS", NID_mime_mhs, 5, &kObjectData[3841], 0},
+    {"mime-mhs-headings", "mime-mhs-headings", NID_mime_mhs_headings, 6,
+     &kObjectData[3846], 0},
+    {"mime-mhs-bodies", "mime-mhs-bodies", NID_mime_mhs_bodies, 6,
+     &kObjectData[3852], 0},
+    {"id-hex-partial-message", "id-hex-partial-message",
+     NID_id_hex_partial_message, 7, &kObjectData[3858], 0},
+    {"id-hex-multipart-message", "id-hex-multipart-message",
+     NID_id_hex_multipart_message, 7, &kObjectData[3865], 0},
+    {"generationQualifier", "generationQualifier", NID_generationQualifier, 3,
+     &kObjectData[3872], 0},
+    {"pseudonym", "pseudonym", NID_pseudonym, 3, &kObjectData[3875], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"id-set", "Secure Electronic Transactions", NID_id_set, 2,
+     &kObjectData[3878], 0},
+    {"set-ctype", "content types", NID_set_ctype, 3, &kObjectData[3880], 0},
+    {"set-msgExt", "message extensions", NID_set_msgExt, 3, &kObjectData[3883],
+     0},
+    {"set-attr", "set-attr", NID_set_attr, 3, &kObjectData[3886], 0},
+    {"set-policy", "set-policy", NID_set_policy, 3, &kObjectData[3889], 0},
+    {"set-certExt", "certificate extensions", NID_set_certExt, 3,
+     &kObjectData[3892], 0},
+    {"set-brand", "set-brand", NID_set_brand, 3, &kObjectData[3895], 0},
+    {"setct-PANData", "setct-PANData", NID_setct_PANData, 4, &kObjectData[3898],
+     0},
+    {"setct-PANToken", "setct-PANToken", NID_setct_PANToken, 4,
+     &kObjectData[3902], 0},
+    {"setct-PANOnly", "setct-PANOnly", NID_setct_PANOnly, 4, &kObjectData[3906],
+     0},
+    {"setct-OIData", "setct-OIData", NID_setct_OIData, 4, &kObjectData[3910],
+     0},
+    {"setct-PI", "setct-PI", NID_setct_PI, 4, &kObjectData[3914], 0},
+    {"setct-PIData", "setct-PIData", NID_setct_PIData, 4, &kObjectData[3918],
+     0},
+    {"setct-PIDataUnsigned", "setct-PIDataUnsigned", NID_setct_PIDataUnsigned,
+     4, &kObjectData[3922], 0},
+    {"setct-HODInput", "setct-HODInput", NID_setct_HODInput, 4,
+     &kObjectData[3926], 0},
+    {"setct-AuthResBaggage", "setct-AuthResBaggage", NID_setct_AuthResBaggage,
+     4, &kObjectData[3930], 0},
+    {"setct-AuthRevReqBaggage", "setct-AuthRevReqBaggage",
+     NID_setct_AuthRevReqBaggage, 4, &kObjectData[3934], 0},
+    {"setct-AuthRevResBaggage", "setct-AuthRevResBaggage",
+     NID_setct_AuthRevResBaggage, 4, &kObjectData[3938], 0},
+    {"setct-CapTokenSeq", "setct-CapTokenSeq", NID_setct_CapTokenSeq, 4,
+     &kObjectData[3942], 0},
+    {"setct-PInitResData", "setct-PInitResData", NID_setct_PInitResData, 4,
+     &kObjectData[3946], 0},
+    {"setct-PI-TBS", "setct-PI-TBS", NID_setct_PI_TBS, 4, &kObjectData[3950],
+     0},
+    {"setct-PResData", "setct-PResData", NID_setct_PResData, 4,
+     &kObjectData[3954], 0},
+    {"setct-AuthReqTBS", "setct-AuthReqTBS", NID_setct_AuthReqTBS, 4,
+     &kObjectData[3958], 0},
+    {"setct-AuthResTBS", "setct-AuthResTBS", NID_setct_AuthResTBS, 4,
+     &kObjectData[3962], 0},
+    {"setct-AuthResTBSX", "setct-AuthResTBSX", NID_setct_AuthResTBSX, 4,
+     &kObjectData[3966], 0},
+    {"setct-AuthTokenTBS", "setct-AuthTokenTBS", NID_setct_AuthTokenTBS, 4,
+     &kObjectData[3970], 0},
+    {"setct-CapTokenData", "setct-CapTokenData", NID_setct_CapTokenData, 4,
+     &kObjectData[3974], 0},
+    {"setct-CapTokenTBS", "setct-CapTokenTBS", NID_setct_CapTokenTBS, 4,
+     &kObjectData[3978], 0},
+    {"setct-AcqCardCodeMsg", "setct-AcqCardCodeMsg", NID_setct_AcqCardCodeMsg,
+     4, &kObjectData[3982], 0},
+    {"setct-AuthRevReqTBS", "setct-AuthRevReqTBS", NID_setct_AuthRevReqTBS, 4,
+     &kObjectData[3986], 0},
+    {"setct-AuthRevResData", "setct-AuthRevResData", NID_setct_AuthRevResData,
+     4, &kObjectData[3990], 0},
+    {"setct-AuthRevResTBS", "setct-AuthRevResTBS", NID_setct_AuthRevResTBS, 4,
+     &kObjectData[3994], 0},
+    {"setct-CapReqTBS", "setct-CapReqTBS", NID_setct_CapReqTBS, 4,
+     &kObjectData[3998], 0},
+    {"setct-CapReqTBSX", "setct-CapReqTBSX", NID_setct_CapReqTBSX, 4,
+     &kObjectData[4002], 0},
+    {"setct-CapResData", "setct-CapResData", NID_setct_CapResData, 4,
+     &kObjectData[4006], 0},
+    {"setct-CapRevReqTBS", "setct-CapRevReqTBS", NID_setct_CapRevReqTBS, 4,
+     &kObjectData[4010], 0},
+    {"setct-CapRevReqTBSX", "setct-CapRevReqTBSX", NID_setct_CapRevReqTBSX, 4,
+     &kObjectData[4014], 0},
+    {"setct-CapRevResData", "setct-CapRevResData", NID_setct_CapRevResData, 4,
+     &kObjectData[4018], 0},
+    {"setct-CredReqTBS", "setct-CredReqTBS", NID_setct_CredReqTBS, 4,
+     &kObjectData[4022], 0},
+    {"setct-CredReqTBSX", "setct-CredReqTBSX", NID_setct_CredReqTBSX, 4,
+     &kObjectData[4026], 0},
+    {"setct-CredResData", "setct-CredResData", NID_setct_CredResData, 4,
+     &kObjectData[4030], 0},
+    {"setct-CredRevReqTBS", "setct-CredRevReqTBS", NID_setct_CredRevReqTBS, 4,
+     &kObjectData[4034], 0},
+    {"setct-CredRevReqTBSX", "setct-CredRevReqTBSX", NID_setct_CredRevReqTBSX,
+     4, &kObjectData[4038], 0},
+    {"setct-CredRevResData", "setct-CredRevResData", NID_setct_CredRevResData,
+     4, &kObjectData[4042], 0},
+    {"setct-PCertReqData", "setct-PCertReqData", NID_setct_PCertReqData, 4,
+     &kObjectData[4046], 0},
+    {"setct-PCertResTBS", "setct-PCertResTBS", NID_setct_PCertResTBS, 4,
+     &kObjectData[4050], 0},
+    {"setct-BatchAdminReqData", "setct-BatchAdminReqData",
+     NID_setct_BatchAdminReqData, 4, &kObjectData[4054], 0},
+    {"setct-BatchAdminResData", "setct-BatchAdminResData",
+     NID_setct_BatchAdminResData, 4, &kObjectData[4058], 0},
+    {"setct-CardCInitResTBS", "setct-CardCInitResTBS",
+     NID_setct_CardCInitResTBS, 4, &kObjectData[4062], 0},
+    {"setct-MeAqCInitResTBS", "setct-MeAqCInitResTBS",
+     NID_setct_MeAqCInitResTBS, 4, &kObjectData[4066], 0},
+    {"setct-RegFormResTBS", "setct-RegFormResTBS", NID_setct_RegFormResTBS, 4,
+     &kObjectData[4070], 0},
+    {"setct-CertReqData", "setct-CertReqData", NID_setct_CertReqData, 4,
+     &kObjectData[4074], 0},
+    {"setct-CertReqTBS", "setct-CertReqTBS", NID_setct_CertReqTBS, 4,
+     &kObjectData[4078], 0},
+    {"setct-CertResData", "setct-CertResData", NID_setct_CertResData, 4,
+     &kObjectData[4082], 0},
+    {"setct-CertInqReqTBS", "setct-CertInqReqTBS", NID_setct_CertInqReqTBS, 4,
+     &kObjectData[4086], 0},
+    {"setct-ErrorTBS", "setct-ErrorTBS", NID_setct_ErrorTBS, 4,
+     &kObjectData[4090], 0},
+    {"setct-PIDualSignedTBE", "setct-PIDualSignedTBE",
+     NID_setct_PIDualSignedTBE, 4, &kObjectData[4094], 0},
+    {"setct-PIUnsignedTBE", "setct-PIUnsignedTBE", NID_setct_PIUnsignedTBE, 4,
+     &kObjectData[4098], 0},
+    {"setct-AuthReqTBE", "setct-AuthReqTBE", NID_setct_AuthReqTBE, 4,
+     &kObjectData[4102], 0},
+    {"setct-AuthResTBE", "setct-AuthResTBE", NID_setct_AuthResTBE, 4,
+     &kObjectData[4106], 0},
+    {"setct-AuthResTBEX", "setct-AuthResTBEX", NID_setct_AuthResTBEX, 4,
+     &kObjectData[4110], 0},
+    {"setct-AuthTokenTBE", "setct-AuthTokenTBE", NID_setct_AuthTokenTBE, 4,
+     &kObjectData[4114], 0},
+    {"setct-CapTokenTBE", "setct-CapTokenTBE", NID_setct_CapTokenTBE, 4,
+     &kObjectData[4118], 0},
+    {"setct-CapTokenTBEX", "setct-CapTokenTBEX", NID_setct_CapTokenTBEX, 4,
+     &kObjectData[4122], 0},
+    {"setct-AcqCardCodeMsgTBE", "setct-AcqCardCodeMsgTBE",
+     NID_setct_AcqCardCodeMsgTBE, 4, &kObjectData[4126], 0},
+    {"setct-AuthRevReqTBE", "setct-AuthRevReqTBE", NID_setct_AuthRevReqTBE, 4,
+     &kObjectData[4130], 0},
+    {"setct-AuthRevResTBE", "setct-AuthRevResTBE", NID_setct_AuthRevResTBE, 4,
+     &kObjectData[4134], 0},
+    {"setct-AuthRevResTBEB", "setct-AuthRevResTBEB", NID_setct_AuthRevResTBEB,
+     4, &kObjectData[4138], 0},
+    {"setct-CapReqTBE", "setct-CapReqTBE", NID_setct_CapReqTBE, 4,
+     &kObjectData[4142], 0},
+    {"setct-CapReqTBEX", "setct-CapReqTBEX", NID_setct_CapReqTBEX, 4,
+     &kObjectData[4146], 0},
+    {"setct-CapResTBE", "setct-CapResTBE", NID_setct_CapResTBE, 4,
+     &kObjectData[4150], 0},
+    {"setct-CapRevReqTBE", "setct-CapRevReqTBE", NID_setct_CapRevReqTBE, 4,
+     &kObjectData[4154], 0},
+    {"setct-CapRevReqTBEX", "setct-CapRevReqTBEX", NID_setct_CapRevReqTBEX, 4,
+     &kObjectData[4158], 0},
+    {"setct-CapRevResTBE", "setct-CapRevResTBE", NID_setct_CapRevResTBE, 4,
+     &kObjectData[4162], 0},
+    {"setct-CredReqTBE", "setct-CredReqTBE", NID_setct_CredReqTBE, 4,
+     &kObjectData[4166], 0},
+    {"setct-CredReqTBEX", "setct-CredReqTBEX", NID_setct_CredReqTBEX, 4,
+     &kObjectData[4170], 0},
+    {"setct-CredResTBE", "setct-CredResTBE", NID_setct_CredResTBE, 4,
+     &kObjectData[4174], 0},
+    {"setct-CredRevReqTBE", "setct-CredRevReqTBE", NID_setct_CredRevReqTBE, 4,
+     &kObjectData[4178], 0},
+    {"setct-CredRevReqTBEX", "setct-CredRevReqTBEX", NID_setct_CredRevReqTBEX,
+     4, &kObjectData[4182], 0},
+    {"setct-CredRevResTBE", "setct-CredRevResTBE", NID_setct_CredRevResTBE, 4,
+     &kObjectData[4186], 0},
+    {"setct-BatchAdminReqTBE", "setct-BatchAdminReqTBE",
+     NID_setct_BatchAdminReqTBE, 4, &kObjectData[4190], 0},
+    {"setct-BatchAdminResTBE", "setct-BatchAdminResTBE",
+     NID_setct_BatchAdminResTBE, 4, &kObjectData[4194], 0},
+    {"setct-RegFormReqTBE", "setct-RegFormReqTBE", NID_setct_RegFormReqTBE, 4,
+     &kObjectData[4198], 0},
+    {"setct-CertReqTBE", "setct-CertReqTBE", NID_setct_CertReqTBE, 4,
+     &kObjectData[4202], 0},
+    {"setct-CertReqTBEX", "setct-CertReqTBEX", NID_setct_CertReqTBEX, 4,
+     &kObjectData[4206], 0},
+    {"setct-CertResTBE", "setct-CertResTBE", NID_setct_CertResTBE, 4,
+     &kObjectData[4210], 0},
+    {"setct-CRLNotificationTBS", "setct-CRLNotificationTBS",
+     NID_setct_CRLNotificationTBS, 4, &kObjectData[4214], 0},
+    {"setct-CRLNotificationResTBS", "setct-CRLNotificationResTBS",
+     NID_setct_CRLNotificationResTBS, 4, &kObjectData[4218], 0},
+    {"setct-BCIDistributionTBS", "setct-BCIDistributionTBS",
+     NID_setct_BCIDistributionTBS, 4, &kObjectData[4222], 0},
+    {"setext-genCrypt", "generic cryptogram", NID_setext_genCrypt, 4,
+     &kObjectData[4226], 0},
+    {"setext-miAuth", "merchant initiated auth", NID_setext_miAuth, 4,
+     &kObjectData[4230], 0},
+    {"setext-pinSecure", "setext-pinSecure", NID_setext_pinSecure, 4,
+     &kObjectData[4234], 0},
+    {"setext-pinAny", "setext-pinAny", NID_setext_pinAny, 4, &kObjectData[4238],
+     0},
+    {"setext-track2", "setext-track2", NID_setext_track2, 4, &kObjectData[4242],
+     0},
+    {"setext-cv", "additional verification", NID_setext_cv, 4,
+     &kObjectData[4246], 0},
+    {"set-policy-root", "set-policy-root", NID_set_policy_root, 4,
+     &kObjectData[4250], 0},
+    {"setCext-hashedRoot", "setCext-hashedRoot", NID_setCext_hashedRoot, 4,
+     &kObjectData[4254], 0},
+    {"setCext-certType", "setCext-certType", NID_setCext_certType, 4,
+     &kObjectData[4258], 0},
+    {"setCext-merchData", "setCext-merchData", NID_setCext_merchData, 4,
+     &kObjectData[4262], 0},
+    {"setCext-cCertRequired", "setCext-cCertRequired",
+     NID_setCext_cCertRequired, 4, &kObjectData[4266], 0},
+    {"setCext-tunneling", "setCext-tunneling", NID_setCext_tunneling, 4,
+     &kObjectData[4270], 0},
+    {"setCext-setExt", "setCext-setExt", NID_setCext_setExt, 4,
+     &kObjectData[4274], 0},
+    {"setCext-setQualf", "setCext-setQualf", NID_setCext_setQualf, 4,
+     &kObjectData[4278], 0},
+    {"setCext-PGWYcapabilities", "setCext-PGWYcapabilities",
+     NID_setCext_PGWYcapabilities, 4, &kObjectData[4282], 0},
+    {"setCext-TokenIdentifier", "setCext-TokenIdentifier",
+     NID_setCext_TokenIdentifier, 4, &kObjectData[4286], 0},
+    {"setCext-Track2Data", "setCext-Track2Data", NID_setCext_Track2Data, 4,
+     &kObjectData[4290], 0},
+    {"setCext-TokenType", "setCext-TokenType", NID_setCext_TokenType, 4,
+     &kObjectData[4294], 0},
+    {"setCext-IssuerCapabilities", "setCext-IssuerCapabilities",
+     NID_setCext_IssuerCapabilities, 4, &kObjectData[4298], 0},
+    {"setAttr-Cert", "setAttr-Cert", NID_setAttr_Cert, 4, &kObjectData[4302],
+     0},
+    {"setAttr-PGWYcap", "payment gateway capabilities", NID_setAttr_PGWYcap, 4,
+     &kObjectData[4306], 0},
+    {"setAttr-TokenType", "setAttr-TokenType", NID_setAttr_TokenType, 4,
+     &kObjectData[4310], 0},
+    {"setAttr-IssCap", "issuer capabilities", NID_setAttr_IssCap, 4,
+     &kObjectData[4314], 0},
+    {"set-rootKeyThumb", "set-rootKeyThumb", NID_set_rootKeyThumb, 5,
+     &kObjectData[4318], 0},
+    {"set-addPolicy", "set-addPolicy", NID_set_addPolicy, 5, &kObjectData[4323],
+     0},
+    {"setAttr-Token-EMV", "setAttr-Token-EMV", NID_setAttr_Token_EMV, 5,
+     &kObjectData[4328], 0},
+    {"setAttr-Token-B0Prime", "setAttr-Token-B0Prime",
+     NID_setAttr_Token_B0Prime, 5, &kObjectData[4333], 0},
+    {"setAttr-IssCap-CVM", "setAttr-IssCap-CVM", NID_setAttr_IssCap_CVM, 5,
+     &kObjectData[4338], 0},
+    {"setAttr-IssCap-T2", "setAttr-IssCap-T2", NID_setAttr_IssCap_T2, 5,
+     &kObjectData[4343], 0},
+    {"setAttr-IssCap-Sig", "setAttr-IssCap-Sig", NID_setAttr_IssCap_Sig, 5,
+     &kObjectData[4348], 0},
+    {"setAttr-GenCryptgrm", "generate cryptogram", NID_setAttr_GenCryptgrm, 6,
+     &kObjectData[4353], 0},
+    {"setAttr-T2Enc", "encrypted track 2", NID_setAttr_T2Enc, 6,
+     &kObjectData[4359], 0},
+    {"setAttr-T2cleartxt", "cleartext track 2", NID_setAttr_T2cleartxt, 6,
+     &kObjectData[4365], 0},
+    {"setAttr-TokICCsig", "ICC or token signature", NID_setAttr_TokICCsig, 6,
+     &kObjectData[4371], 0},
+    {"setAttr-SecDevSig", "secure device signature", NID_setAttr_SecDevSig, 6,
+     &kObjectData[4377], 0},
+    {"set-brand-IATA-ATA", "set-brand-IATA-ATA", NID_set_brand_IATA_ATA, 4,
+     &kObjectData[4383], 0},
+    {"set-brand-Diners", "set-brand-Diners", NID_set_brand_Diners, 4,
+     &kObjectData[4387], 0},
+    {"set-brand-AmericanExpress", "set-brand-AmericanExpress",
+     NID_set_brand_AmericanExpress, 4, &kObjectData[4391], 0},
+    {"set-brand-JCB", "set-brand-JCB", NID_set_brand_JCB, 4, &kObjectData[4395],
+     0},
+    {"set-brand-Visa", "set-brand-Visa", NID_set_brand_Visa, 4,
+     &kObjectData[4399], 0},
+    {"set-brand-MasterCard", "set-brand-MasterCard", NID_set_brand_MasterCard,
+     4, &kObjectData[4403], 0},
+    {"set-brand-Novus", "set-brand-Novus", NID_set_brand_Novus, 5,
+     &kObjectData[4407], 0},
+    {"DES-CDMF", "des-cdmf", NID_des_cdmf, 8, &kObjectData[4412], 0},
+    {"rsaOAEPEncryptionSET", "rsaOAEPEncryptionSET", NID_rsaOAEPEncryptionSET,
+     9, &kObjectData[4420], 0},
+    {"ITU-T", "itu-t", NID_itu_t, 0, NULL, 0},
+    {"JOINT-ISO-ITU-T", "joint-iso-itu-t", NID_joint_iso_itu_t, 0, NULL, 0},
+    {"international-organizations", "International Organizations",
+     NID_international_organizations, 1, &kObjectData[4429], 0},
+    {"msSmartcardLogin", "Microsoft Smartcardlogin", NID_ms_smartcard_login, 10,
+     &kObjectData[4430], 0},
+    {"msUPN", "Microsoft Universal Principal Name", NID_ms_upn, 10,
+     &kObjectData[4440], 0},
+    {"AES-128-CFB1", "aes-128-cfb1", NID_aes_128_cfb1, 0, NULL, 0},
+    {"AES-192-CFB1", "aes-192-cfb1", NID_aes_192_cfb1, 0, NULL, 0},
+    {"AES-256-CFB1", "aes-256-cfb1", NID_aes_256_cfb1, 0, NULL, 0},
+    {"AES-128-CFB8", "aes-128-cfb8", NID_aes_128_cfb8, 0, NULL, 0},
+    {"AES-192-CFB8", "aes-192-cfb8", NID_aes_192_cfb8, 0, NULL, 0},
+    {"AES-256-CFB8", "aes-256-cfb8", NID_aes_256_cfb8, 0, NULL, 0},
+    {"DES-CFB1", "des-cfb1", NID_des_cfb1, 0, NULL, 0},
+    {"DES-CFB8", "des-cfb8", NID_des_cfb8, 0, NULL, 0},
+    {"DES-EDE3-CFB1", "des-ede3-cfb1", NID_des_ede3_cfb1, 0, NULL, 0},
+    {"DES-EDE3-CFB8", "des-ede3-cfb8", NID_des_ede3_cfb8, 0, NULL, 0},
+    {"street", "streetAddress", NID_streetAddress, 3, &kObjectData[4450], 0},
+    {"postalCode", "postalCode", NID_postalCode, 3, &kObjectData[4453], 0},
+    {"id-ppl", "id-ppl", NID_id_ppl, 7, &kObjectData[4456], 0},
+    {"proxyCertInfo", "Proxy Certificate Information", NID_proxyCertInfo, 8,
+     &kObjectData[4463], 0},
+    {"id-ppl-anyLanguage", "Any language", NID_id_ppl_anyLanguage, 8,
+     &kObjectData[4471], 0},
+    {"id-ppl-inheritAll", "Inherit all", NID_id_ppl_inheritAll, 8,
+     &kObjectData[4479], 0},
+    {"nameConstraints", "X509v3 Name Constraints", NID_name_constraints, 3,
+     &kObjectData[4487], 0},
+    {"id-ppl-independent", "Independent", NID_Independent, 8,
+     &kObjectData[4490], 0},
+    {"RSA-SHA256", "sha256WithRSAEncryption", NID_sha256WithRSAEncryption, 9,
+     &kObjectData[4498], 0},
+    {"RSA-SHA384", "sha384WithRSAEncryption", NID_sha384WithRSAEncryption, 9,
+     &kObjectData[4507], 0},
+    {"RSA-SHA512", "sha512WithRSAEncryption", NID_sha512WithRSAEncryption, 9,
+     &kObjectData[4516], 0},
+    {"RSA-SHA224", "sha224WithRSAEncryption", NID_sha224WithRSAEncryption, 9,
+     &kObjectData[4525], 0},
+    {"SHA256", "sha256", NID_sha256, 9, &kObjectData[4534], 0},
+    {"SHA384", "sha384", NID_sha384, 9, &kObjectData[4543], 0},
+    {"SHA512", "sha512", NID_sha512, 9, &kObjectData[4552], 0},
+    {"SHA224", "sha224", NID_sha224, 9, &kObjectData[4561], 0},
+    {"identified-organization", "identified-organization",
+     NID_identified_organization, 1, &kObjectData[4570], 0},
+    {"certicom-arc", "certicom-arc", NID_certicom_arc, 3, &kObjectData[4571],
+     0},
+    {"wap", "wap", NID_wap, 2, &kObjectData[4574], 0},
+    {"wap-wsg", "wap-wsg", NID_wap_wsg, 3, &kObjectData[4576], 0},
+    {"id-characteristic-two-basis", "id-characteristic-two-basis",
+     NID_X9_62_id_characteristic_two_basis, 8, &kObjectData[4579], 0},
+    {"onBasis", "onBasis", NID_X9_62_onBasis, 9, &kObjectData[4587], 0},
+    {"tpBasis", "tpBasis", NID_X9_62_tpBasis, 9, &kObjectData[4596], 0},
+    {"ppBasis", "ppBasis", NID_X9_62_ppBasis, 9, &kObjectData[4605], 0},
+    {"c2pnb163v1", "c2pnb163v1", NID_X9_62_c2pnb163v1, 8, &kObjectData[4614],
+     0},
+    {"c2pnb163v2", "c2pnb163v2", NID_X9_62_c2pnb163v2, 8, &kObjectData[4622],
+     0},
+    {"c2pnb163v3", "c2pnb163v3", NID_X9_62_c2pnb163v3, 8, &kObjectData[4630],
+     0},
+    {"c2pnb176v1", "c2pnb176v1", NID_X9_62_c2pnb176v1, 8, &kObjectData[4638],
+     0},
+    {"c2tnb191v1", "c2tnb191v1", NID_X9_62_c2tnb191v1, 8, &kObjectData[4646],
+     0},
+    {"c2tnb191v2", "c2tnb191v2", NID_X9_62_c2tnb191v2, 8, &kObjectData[4654],
+     0},
+    {"c2tnb191v3", "c2tnb191v3", NID_X9_62_c2tnb191v3, 8, &kObjectData[4662],
+     0},
+    {"c2onb191v4", "c2onb191v4", NID_X9_62_c2onb191v4, 8, &kObjectData[4670],
+     0},
+    {"c2onb191v5", "c2onb191v5", NID_X9_62_c2onb191v5, 8, &kObjectData[4678],
+     0},
+    {"c2pnb208w1", "c2pnb208w1", NID_X9_62_c2pnb208w1, 8, &kObjectData[4686],
+     0},
+    {"c2tnb239v1", "c2tnb239v1", NID_X9_62_c2tnb239v1, 8, &kObjectData[4694],
+     0},
+    {"c2tnb239v2", "c2tnb239v2", NID_X9_62_c2tnb239v2, 8, &kObjectData[4702],
+     0},
+    {"c2tnb239v3", "c2tnb239v3", NID_X9_62_c2tnb239v3, 8, &kObjectData[4710],
+     0},
+    {"c2onb239v4", "c2onb239v4", NID_X9_62_c2onb239v4, 8, &kObjectData[4718],
+     0},
+    {"c2onb239v5", "c2onb239v5", NID_X9_62_c2onb239v5, 8, &kObjectData[4726],
+     0},
+    {"c2pnb272w1", "c2pnb272w1", NID_X9_62_c2pnb272w1, 8, &kObjectData[4734],
+     0},
+    {"c2pnb304w1", "c2pnb304w1", NID_X9_62_c2pnb304w1, 8, &kObjectData[4742],
+     0},
+    {"c2tnb359v1", "c2tnb359v1", NID_X9_62_c2tnb359v1, 8, &kObjectData[4750],
+     0},
+    {"c2pnb368w1", "c2pnb368w1", NID_X9_62_c2pnb368w1, 8, &kObjectData[4758],
+     0},
+    {"c2tnb431r1", "c2tnb431r1", NID_X9_62_c2tnb431r1, 8, &kObjectData[4766],
+     0},
+    {"secp112r1", "secp112r1", NID_secp112r1, 5, &kObjectData[4774], 0},
+    {"secp112r2", "secp112r2", NID_secp112r2, 5, &kObjectData[4779], 0},
+    {"secp128r1", "secp128r1", NID_secp128r1, 5, &kObjectData[4784], 0},
+    {"secp128r2", "secp128r2", NID_secp128r2, 5, &kObjectData[4789], 0},
+    {"secp160k1", "secp160k1", NID_secp160k1, 5, &kObjectData[4794], 0},
+    {"secp160r1", "secp160r1", NID_secp160r1, 5, &kObjectData[4799], 0},
+    {"secp160r2", "secp160r2", NID_secp160r2, 5, &kObjectData[4804], 0},
+    {"secp192k1", "secp192k1", NID_secp192k1, 5, &kObjectData[4809], 0},
+    {"secp224k1", "secp224k1", NID_secp224k1, 5, &kObjectData[4814], 0},
+    {"secp224r1", "secp224r1", NID_secp224r1, 5, &kObjectData[4819], 0},
+    {"secp256k1", "secp256k1", NID_secp256k1, 5, &kObjectData[4824], 0},
+    {"secp384r1", "secp384r1", NID_secp384r1, 5, &kObjectData[4829], 0},
+    {"secp521r1", "secp521r1", NID_secp521r1, 5, &kObjectData[4834], 0},
+    {"sect113r1", "sect113r1", NID_sect113r1, 5, &kObjectData[4839], 0},
+    {"sect113r2", "sect113r2", NID_sect113r2, 5, &kObjectData[4844], 0},
+    {"sect131r1", "sect131r1", NID_sect131r1, 5, &kObjectData[4849], 0},
+    {"sect131r2", "sect131r2", NID_sect131r2, 5, &kObjectData[4854], 0},
+    {"sect163k1", "sect163k1", NID_sect163k1, 5, &kObjectData[4859], 0},
+    {"sect163r1", "sect163r1", NID_sect163r1, 5, &kObjectData[4864], 0},
+    {"sect163r2", "sect163r2", NID_sect163r2, 5, &kObjectData[4869], 0},
+    {"sect193r1", "sect193r1", NID_sect193r1, 5, &kObjectData[4874], 0},
+    {"sect193r2", "sect193r2", NID_sect193r2, 5, &kObjectData[4879], 0},
+    {"sect233k1", "sect233k1", NID_sect233k1, 5, &kObjectData[4884], 0},
+    {"sect233r1", "sect233r1", NID_sect233r1, 5, &kObjectData[4889], 0},
+    {"sect239k1", "sect239k1", NID_sect239k1, 5, &kObjectData[4894], 0},
+    {"sect283k1", "sect283k1", NID_sect283k1, 5, &kObjectData[4899], 0},
+    {"sect283r1", "sect283r1", NID_sect283r1, 5, &kObjectData[4904], 0},
+    {"sect409k1", "sect409k1", NID_sect409k1, 5, &kObjectData[4909], 0},
+    {"sect409r1", "sect409r1", NID_sect409r1, 5, &kObjectData[4914], 0},
+    {"sect571k1", "sect571k1", NID_sect571k1, 5, &kObjectData[4919], 0},
+    {"sect571r1", "sect571r1", NID_sect571r1, 5, &kObjectData[4924], 0},
+    {"wap-wsg-idm-ecid-wtls1", "wap-wsg-idm-ecid-wtls1",
+     NID_wap_wsg_idm_ecid_wtls1, 5, &kObjectData[4929], 0},
+    {"wap-wsg-idm-ecid-wtls3", "wap-wsg-idm-ecid-wtls3",
+     NID_wap_wsg_idm_ecid_wtls3, 5, &kObjectData[4934], 0},
+    {"wap-wsg-idm-ecid-wtls4", "wap-wsg-idm-ecid-wtls4",
+     NID_wap_wsg_idm_ecid_wtls4, 5, &kObjectData[4939], 0},
+    {"wap-wsg-idm-ecid-wtls5", "wap-wsg-idm-ecid-wtls5",
+     NID_wap_wsg_idm_ecid_wtls5, 5, &kObjectData[4944], 0},
+    {"wap-wsg-idm-ecid-wtls6", "wap-wsg-idm-ecid-wtls6",
+     NID_wap_wsg_idm_ecid_wtls6, 5, &kObjectData[4949], 0},
+    {"wap-wsg-idm-ecid-wtls7", "wap-wsg-idm-ecid-wtls7",
+     NID_wap_wsg_idm_ecid_wtls7, 5, &kObjectData[4954], 0},
+    {"wap-wsg-idm-ecid-wtls8", "wap-wsg-idm-ecid-wtls8",
+     NID_wap_wsg_idm_ecid_wtls8, 5, &kObjectData[4959], 0},
+    {"wap-wsg-idm-ecid-wtls9", "wap-wsg-idm-ecid-wtls9",
+     NID_wap_wsg_idm_ecid_wtls9, 5, &kObjectData[4964], 0},
+    {"wap-wsg-idm-ecid-wtls10", "wap-wsg-idm-ecid-wtls10",
+     NID_wap_wsg_idm_ecid_wtls10, 5, &kObjectData[4969], 0},
+    {"wap-wsg-idm-ecid-wtls11", "wap-wsg-idm-ecid-wtls11",
+     NID_wap_wsg_idm_ecid_wtls11, 5, &kObjectData[4974], 0},
+    {"wap-wsg-idm-ecid-wtls12", "wap-wsg-idm-ecid-wtls12",
+     NID_wap_wsg_idm_ecid_wtls12, 5, &kObjectData[4979], 0},
+    {"anyPolicy", "X509v3 Any Policy", NID_any_policy, 4, &kObjectData[4984],
+     0},
+    {"policyMappings", "X509v3 Policy Mappings", NID_policy_mappings, 3,
+     &kObjectData[4988], 0},
+    {"inhibitAnyPolicy", "X509v3 Inhibit Any Policy", NID_inhibit_any_policy, 3,
+     &kObjectData[4991], 0},
+    {"Oakley-EC2N-3", "ipsec3", NID_ipsec3, 0, NULL, 0},
+    {"Oakley-EC2N-4", "ipsec4", NID_ipsec4, 0, NULL, 0},
+    {"CAMELLIA-128-CBC", "camellia-128-cbc", NID_camellia_128_cbc, 11,
+     &kObjectData[4994], 0},
+    {"CAMELLIA-192-CBC", "camellia-192-cbc", NID_camellia_192_cbc, 11,
+     &kObjectData[5005], 0},
+    {"CAMELLIA-256-CBC", "camellia-256-cbc", NID_camellia_256_cbc, 11,
+     &kObjectData[5016], 0},
+    {"CAMELLIA-128-ECB", "camellia-128-ecb", NID_camellia_128_ecb, 8,
+     &kObjectData[5027], 0},
+    {"CAMELLIA-192-ECB", "camellia-192-ecb", NID_camellia_192_ecb, 8,
+     &kObjectData[5035], 0},
+    {"CAMELLIA-256-ECB", "camellia-256-ecb", NID_camellia_256_ecb, 8,
+     &kObjectData[5043], 0},
+    {"CAMELLIA-128-CFB", "camellia-128-cfb", NID_camellia_128_cfb128, 8,
+     &kObjectData[5051], 0},
+    {"CAMELLIA-192-CFB", "camellia-192-cfb", NID_camellia_192_cfb128, 8,
+     &kObjectData[5059], 0},
+    {"CAMELLIA-256-CFB", "camellia-256-cfb", NID_camellia_256_cfb128, 8,
+     &kObjectData[5067], 0},
+    {"CAMELLIA-128-CFB1", "camellia-128-cfb1", NID_camellia_128_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-192-CFB1", "camellia-192-cfb1", NID_camellia_192_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-256-CFB1", "camellia-256-cfb1", NID_camellia_256_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-128-CFB8", "camellia-128-cfb8", NID_camellia_128_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-192-CFB8", "camellia-192-cfb8", NID_camellia_192_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-256-CFB8", "camellia-256-cfb8", NID_camellia_256_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-128-OFB", "camellia-128-ofb", NID_camellia_128_ofb128, 8,
+     &kObjectData[5075], 0},
+    {"CAMELLIA-192-OFB", "camellia-192-ofb", NID_camellia_192_ofb128, 8,
+     &kObjectData[5083], 0},
+    {"CAMELLIA-256-OFB", "camellia-256-ofb", NID_camellia_256_ofb128, 8,
+     &kObjectData[5091], 0},
+    {"subjectDirectoryAttributes", "X509v3 Subject Directory Attributes",
+     NID_subject_directory_attributes, 3, &kObjectData[5099], 0},
+    {"issuingDistributionPoint", "X509v3 Issuing Distribution Point",
+     NID_issuing_distribution_point, 3, &kObjectData[5102], 0},
+    {"certificateIssuer", "X509v3 Certificate Issuer", NID_certificate_issuer,
+     3, &kObjectData[5105], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"KISA", "kisa", NID_kisa, 6, &kObjectData[5108], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"SEED-ECB", "seed-ecb", NID_seed_ecb, 8, &kObjectData[5114], 0},
+    {"SEED-CBC", "seed-cbc", NID_seed_cbc, 8, &kObjectData[5122], 0},
+    {"SEED-OFB", "seed-ofb", NID_seed_ofb128, 8, &kObjectData[5130], 0},
+    {"SEED-CFB", "seed-cfb", NID_seed_cfb128, 8, &kObjectData[5138], 0},
+    {"HMAC-MD5", "hmac-md5", NID_hmac_md5, 8, &kObjectData[5146], 0},
+    {"HMAC-SHA1", "hmac-sha1", NID_hmac_sha1, 8, &kObjectData[5154], 0},
+    {"id-PasswordBasedMAC", "password based MAC", NID_id_PasswordBasedMAC, 9,
+     &kObjectData[5162], 0},
+    {"id-DHBasedMac", "Diffie-Hellman based MAC", NID_id_DHBasedMac, 9,
+     &kObjectData[5171], 0},
+    {"id-it-suppLangTags", "id-it-suppLangTags", NID_id_it_suppLangTags, 8,
+     &kObjectData[5180], 0},
+    {"caRepository", "CA Repository", NID_caRepository, 8, &kObjectData[5188],
+     0},
+    {"id-smime-ct-compressedData", "id-smime-ct-compressedData",
+     NID_id_smime_ct_compressedData, 11, &kObjectData[5196], 0},
+    {"id-ct-asciiTextWithCRLF", "id-ct-asciiTextWithCRLF",
+     NID_id_ct_asciiTextWithCRLF, 11, &kObjectData[5207], 0},
+    {"id-aes128-wrap", "id-aes128-wrap", NID_id_aes128_wrap, 9,
+     &kObjectData[5218], 0},
+    {"id-aes192-wrap", "id-aes192-wrap", NID_id_aes192_wrap, 9,
+     &kObjectData[5227], 0},
+    {"id-aes256-wrap", "id-aes256-wrap", NID_id_aes256_wrap, 9,
+     &kObjectData[5236], 0},
+    {"ecdsa-with-Recommended", "ecdsa-with-Recommended",
+     NID_ecdsa_with_Recommended, 7, &kObjectData[5245], 0},
+    {"ecdsa-with-Specified", "ecdsa-with-Specified", NID_ecdsa_with_Specified,
+     7, &kObjectData[5252], 0},
+    {"ecdsa-with-SHA224", "ecdsa-with-SHA224", NID_ecdsa_with_SHA224, 8,
+     &kObjectData[5259], 0},
+    {"ecdsa-with-SHA256", "ecdsa-with-SHA256", NID_ecdsa_with_SHA256, 8,
+     &kObjectData[5267], 0},
+    {"ecdsa-with-SHA384", "ecdsa-with-SHA384", NID_ecdsa_with_SHA384, 8,
+     &kObjectData[5275], 0},
+    {"ecdsa-with-SHA512", "ecdsa-with-SHA512", NID_ecdsa_with_SHA512, 8,
+     &kObjectData[5283], 0},
+    {"hmacWithMD5", "hmacWithMD5", NID_hmacWithMD5, 8, &kObjectData[5291], 0},
+    {"hmacWithSHA224", "hmacWithSHA224", NID_hmacWithSHA224, 8,
+     &kObjectData[5299], 0},
+    {"hmacWithSHA256", "hmacWithSHA256", NID_hmacWithSHA256, 8,
+     &kObjectData[5307], 0},
+    {"hmacWithSHA384", "hmacWithSHA384", NID_hmacWithSHA384, 8,
+     &kObjectData[5315], 0},
+    {"hmacWithSHA512", "hmacWithSHA512", NID_hmacWithSHA512, 8,
+     &kObjectData[5323], 0},
+    {"dsa_with_SHA224", "dsa_with_SHA224", NID_dsa_with_SHA224, 9,
+     &kObjectData[5331], 0},
+    {"dsa_with_SHA256", "dsa_with_SHA256", NID_dsa_with_SHA256, 9,
+     &kObjectData[5340], 0},
+    {"whirlpool", "whirlpool", NID_whirlpool, 6, &kObjectData[5349], 0},
+    {"cryptopro", "cryptopro", NID_cryptopro, 5, &kObjectData[5355], 0},
+    {"cryptocom", "cryptocom", NID_cryptocom, 5, &kObjectData[5360], 0},
+    {"id-GostR3411-94-with-GostR3410-2001",
+     "GOST R 34.11-94 with GOST R 34.10-2001",
+     NID_id_GostR3411_94_with_GostR3410_2001, 6, &kObjectData[5365], 0},
+    {"id-GostR3411-94-with-GostR3410-94",
+     "GOST R 34.11-94 with GOST R 34.10-94",
+     NID_id_GostR3411_94_with_GostR3410_94, 6, &kObjectData[5371], 0},
+    {"md_gost94", "GOST R 34.11-94", NID_id_GostR3411_94, 6, &kObjectData[5377],
+     0},
+    {"id-HMACGostR3411-94", "HMAC GOST 34.11-94", NID_id_HMACGostR3411_94, 6,
+     &kObjectData[5383], 0},
+    {"gost2001", "GOST R 34.10-2001", NID_id_GostR3410_2001, 6,
+     &kObjectData[5389], 0},
+    {"gost94", "GOST R 34.10-94", NID_id_GostR3410_94, 6, &kObjectData[5395],
+     0},
+    {"gost89", "GOST 28147-89", NID_id_Gost28147_89, 6, &kObjectData[5401], 0},
+    {"gost89-cnt", "gost89-cnt", NID_gost89_cnt, 0, NULL, 0},
+    {"gost-mac", "GOST 28147-89 MAC", NID_id_Gost28147_89_MAC, 6,
+     &kObjectData[5407], 0},
+    {"prf-gostr3411-94", "GOST R 34.11-94 PRF", NID_id_GostR3411_94_prf, 6,
+     &kObjectData[5413], 0},
+    {"id-GostR3410-2001DH", "GOST R 34.10-2001 DH", NID_id_GostR3410_2001DH, 6,
+     &kObjectData[5419], 0},
+    {"id-GostR3410-94DH", "GOST R 34.10-94 DH", NID_id_GostR3410_94DH, 6,
+     &kObjectData[5425], 0},
+    {"id-Gost28147-89-CryptoPro-KeyMeshing",
+     "id-Gost28147-89-CryptoPro-KeyMeshing",
+     NID_id_Gost28147_89_CryptoPro_KeyMeshing, 7, &kObjectData[5431], 0},
+    {"id-Gost28147-89-None-KeyMeshing", "id-Gost28147-89-None-KeyMeshing",
+     NID_id_Gost28147_89_None_KeyMeshing, 7, &kObjectData[5438], 0},
+    {"id-GostR3411-94-TestParamSet", "id-GostR3411-94-TestParamSet",
+     NID_id_GostR3411_94_TestParamSet, 7, &kObjectData[5445], 0},
+    {"id-GostR3411-94-CryptoProParamSet", "id-GostR3411-94-CryptoProParamSet",
+     NID_id_GostR3411_94_CryptoProParamSet, 7, &kObjectData[5452], 0},
+    {"id-Gost28147-89-TestParamSet", "id-Gost28147-89-TestParamSet",
+     NID_id_Gost28147_89_TestParamSet, 7, &kObjectData[5459], 0},
+    {"id-Gost28147-89-CryptoPro-A-ParamSet",
+     "id-Gost28147-89-CryptoPro-A-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_A_ParamSet, 7, &kObjectData[5466], 0},
+    {"id-Gost28147-89-CryptoPro-B-ParamSet",
+     "id-Gost28147-89-CryptoPro-B-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_B_ParamSet, 7, &kObjectData[5473], 0},
+    {"id-Gost28147-89-CryptoPro-C-ParamSet",
+     "id-Gost28147-89-CryptoPro-C-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_C_ParamSet, 7, &kObjectData[5480], 0},
+    {"id-Gost28147-89-CryptoPro-D-ParamSet",
+     "id-Gost28147-89-CryptoPro-D-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_D_ParamSet, 7, &kObjectData[5487], 0},
+    {"id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet",
+     "id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet, 7, &kObjectData[5494],
+     0},
+    {"id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet",
+     "id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet, 7, &kObjectData[5501],
+     0},
+    {"id-Gost28147-89-CryptoPro-RIC-1-ParamSet",
+     "id-Gost28147-89-CryptoPro-RIC-1-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet, 7, &kObjectData[5508], 0},
+    {"id-GostR3410-94-TestParamSet", "id-GostR3410-94-TestParamSet",
+     NID_id_GostR3410_94_TestParamSet, 7, &kObjectData[5515], 0},
+    {"id-GostR3410-94-CryptoPro-A-ParamSet",
+     "id-GostR3410-94-CryptoPro-A-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_A_ParamSet, 7, &kObjectData[5522], 0},
+    {"id-GostR3410-94-CryptoPro-B-ParamSet",
+     "id-GostR3410-94-CryptoPro-B-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_B_ParamSet, 7, &kObjectData[5529], 0},
+    {"id-GostR3410-94-CryptoPro-C-ParamSet",
+     "id-GostR3410-94-CryptoPro-C-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_C_ParamSet, 7, &kObjectData[5536], 0},
+    {"id-GostR3410-94-CryptoPro-D-ParamSet",
+     "id-GostR3410-94-CryptoPro-D-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_D_ParamSet, 7, &kObjectData[5543], 0},
+    {"id-GostR3410-94-CryptoPro-XchA-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchA-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchA_ParamSet, 7, &kObjectData[5550], 0},
+    {"id-GostR3410-94-CryptoPro-XchB-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchB-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchB_ParamSet, 7, &kObjectData[5557], 0},
+    {"id-GostR3410-94-CryptoPro-XchC-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchC-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchC_ParamSet, 7, &kObjectData[5564], 0},
+    {"id-GostR3410-2001-TestParamSet", "id-GostR3410-2001-TestParamSet",
+     NID_id_GostR3410_2001_TestParamSet, 7, &kObjectData[5571], 0},
+    {"id-GostR3410-2001-CryptoPro-A-ParamSet",
+     "id-GostR3410-2001-CryptoPro-A-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_A_ParamSet, 7, &kObjectData[5578], 0},
+    {"id-GostR3410-2001-CryptoPro-B-ParamSet",
+     "id-GostR3410-2001-CryptoPro-B-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_B_ParamSet, 7, &kObjectData[5585], 0},
+    {"id-GostR3410-2001-CryptoPro-C-ParamSet",
+     "id-GostR3410-2001-CryptoPro-C-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_C_ParamSet, 7, &kObjectData[5592], 0},
+    {"id-GostR3410-2001-CryptoPro-XchA-ParamSet",
+     "id-GostR3410-2001-CryptoPro-XchA-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet, 7, &kObjectData[5599], 0},
+    {"id-GostR3410-2001-CryptoPro-XchB-ParamSet",
+     "id-GostR3410-2001-CryptoPro-XchB-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet, 7, &kObjectData[5606], 0},
+    {"id-GostR3410-94-a", "id-GostR3410-94-a", NID_id_GostR3410_94_a, 7,
+     &kObjectData[5613], 0},
+    {"id-GostR3410-94-aBis", "id-GostR3410-94-aBis", NID_id_GostR3410_94_aBis,
+     7, &kObjectData[5620], 0},
+    {"id-GostR3410-94-b", "id-GostR3410-94-b", NID_id_GostR3410_94_b, 7,
+     &kObjectData[5627], 0},
+    {"id-GostR3410-94-bBis", "id-GostR3410-94-bBis", NID_id_GostR3410_94_bBis,
+     7, &kObjectData[5634], 0},
+    {"id-Gost28147-89-cc", "GOST 28147-89 Cryptocom ParamSet",
+     NID_id_Gost28147_89_cc, 8, &kObjectData[5641], 0},
+    {"gost94cc", "GOST 34.10-94 Cryptocom", NID_id_GostR3410_94_cc, 8,
+     &kObjectData[5649], 0},
+    {"gost2001cc", "GOST 34.10-2001 Cryptocom", NID_id_GostR3410_2001_cc, 8,
+     &kObjectData[5657], 0},
+    {"id-GostR3411-94-with-GostR3410-94-cc",
+     "GOST R 34.11-94 with GOST R 34.10-94 Cryptocom",
+     NID_id_GostR3411_94_with_GostR3410_94_cc, 8, &kObjectData[5665], 0},
+    {"id-GostR3411-94-with-GostR3410-2001-cc",
+     "GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom",
+     NID_id_GostR3411_94_with_GostR3410_2001_cc, 8, &kObjectData[5673], 0},
+    {"id-GostR3410-2001-ParamSet-cc",
+     "GOST R 3410-2001 Parameter Set Cryptocom",
+     NID_id_GostR3410_2001_ParamSet_cc, 8, &kObjectData[5681], 0},
+    {"HMAC", "hmac", NID_hmac, 0, NULL, 0},
+    {"LocalKeySet", "Microsoft Local Key set", NID_LocalKeySet, 9,
+     &kObjectData[5689], 0},
+    {"freshestCRL", "X509v3 Freshest CRL", NID_freshest_crl, 3,
+     &kObjectData[5698], 0},
+    {"id-on-permanentIdentifier", "Permanent Identifier",
+     NID_id_on_permanentIdentifier, 8, &kObjectData[5701], 0},
+    {"searchGuide", "searchGuide", NID_searchGuide, 3, &kObjectData[5709], 0},
+    {"businessCategory", "businessCategory", NID_businessCategory, 3,
+     &kObjectData[5712], 0},
+    {"postalAddress", "postalAddress", NID_postalAddress, 3, &kObjectData[5715],
+     0},
+    {"postOfficeBox", "postOfficeBox", NID_postOfficeBox, 3, &kObjectData[5718],
+     0},
+    {"physicalDeliveryOfficeName", "physicalDeliveryOfficeName",
+     NID_physicalDeliveryOfficeName, 3, &kObjectData[5721], 0},
+    {"telephoneNumber", "telephoneNumber", NID_telephoneNumber, 3,
+     &kObjectData[5724], 0},
+    {"telexNumber", "telexNumber", NID_telexNumber, 3, &kObjectData[5727], 0},
+    {"teletexTerminalIdentifier", "teletexTerminalIdentifier",
+     NID_teletexTerminalIdentifier, 3, &kObjectData[5730], 0},
+    {"facsimileTelephoneNumber", "facsimileTelephoneNumber",
+     NID_facsimileTelephoneNumber, 3, &kObjectData[5733], 0},
+    {"x121Address", "x121Address", NID_x121Address, 3, &kObjectData[5736], 0},
+    {"internationaliSDNNumber", "internationaliSDNNumber",
+     NID_internationaliSDNNumber, 3, &kObjectData[5739], 0},
+    {"registeredAddress", "registeredAddress", NID_registeredAddress, 3,
+     &kObjectData[5742], 0},
+    {"destinationIndicator", "destinationIndicator", NID_destinationIndicator,
+     3, &kObjectData[5745], 0},
+    {"preferredDeliveryMethod", "preferredDeliveryMethod",
+     NID_preferredDeliveryMethod, 3, &kObjectData[5748], 0},
+    {"presentationAddress", "presentationAddress", NID_presentationAddress, 3,
+     &kObjectData[5751], 0},
+    {"supportedApplicationContext", "supportedApplicationContext",
+     NID_supportedApplicationContext, 3, &kObjectData[5754], 0},
+    {"member", "member", NID_member, 3, &kObjectData[5757], 0},
+    {"owner", "owner", NID_owner, 3, &kObjectData[5760], 0},
+    {"roleOccupant", "roleOccupant", NID_roleOccupant, 3, &kObjectData[5763],
+     0},
+    {"seeAlso", "seeAlso", NID_seeAlso, 3, &kObjectData[5766], 0},
+    {"userPassword", "userPassword", NID_userPassword, 3, &kObjectData[5769],
+     0},
+    {"userCertificate", "userCertificate", NID_userCertificate, 3,
+     &kObjectData[5772], 0},
+    {"cACertificate", "cACertificate", NID_cACertificate, 3, &kObjectData[5775],
+     0},
+    {"authorityRevocationList", "authorityRevocationList",
+     NID_authorityRevocationList, 3, &kObjectData[5778], 0},
+    {"certificateRevocationList", "certificateRevocationList",
+     NID_certificateRevocationList, 3, &kObjectData[5781], 0},
+    {"crossCertificatePair", "crossCertificatePair", NID_crossCertificatePair,
+     3, &kObjectData[5784], 0},
+    {"enhancedSearchGuide", "enhancedSearchGuide", NID_enhancedSearchGuide, 3,
+     &kObjectData[5787], 0},
+    {"protocolInformation", "protocolInformation", NID_protocolInformation, 3,
+     &kObjectData[5790], 0},
+    {"distinguishedName", "distinguishedName", NID_distinguishedName, 3,
+     &kObjectData[5793], 0},
+    {"uniqueMember", "uniqueMember", NID_uniqueMember, 3, &kObjectData[5796],
+     0},
+    {"houseIdentifier", "houseIdentifier", NID_houseIdentifier, 3,
+     &kObjectData[5799], 0},
+    {"supportedAlgorithms", "supportedAlgorithms", NID_supportedAlgorithms, 3,
+     &kObjectData[5802], 0},
+    {"deltaRevocationList", "deltaRevocationList", NID_deltaRevocationList, 3,
+     &kObjectData[5805], 0},
+    {"dmdName", "dmdName", NID_dmdName, 3, &kObjectData[5808], 0},
+    {"id-alg-PWRI-KEK", "id-alg-PWRI-KEK", NID_id_alg_PWRI_KEK, 11,
+     &kObjectData[5811], 0},
+    {"CMAC", "cmac", NID_cmac, 0, NULL, 0},
+    {"id-aes128-GCM", "aes-128-gcm", NID_aes_128_gcm, 9, &kObjectData[5822], 0},
+    {"id-aes128-CCM", "aes-128-ccm", NID_aes_128_ccm, 9, &kObjectData[5831], 0},
+    {"id-aes128-wrap-pad", "id-aes128-wrap-pad", NID_id_aes128_wrap_pad, 9,
+     &kObjectData[5840], 0},
+    {"id-aes192-GCM", "aes-192-gcm", NID_aes_192_gcm, 9, &kObjectData[5849], 0},
+    {"id-aes192-CCM", "aes-192-ccm", NID_aes_192_ccm, 9, &kObjectData[5858], 0},
+    {"id-aes192-wrap-pad", "id-aes192-wrap-pad", NID_id_aes192_wrap_pad, 9,
+     &kObjectData[5867], 0},
+    {"id-aes256-GCM", "aes-256-gcm", NID_aes_256_gcm, 9, &kObjectData[5876], 0},
+    {"id-aes256-CCM", "aes-256-ccm", NID_aes_256_ccm, 9, &kObjectData[5885], 0},
+    {"id-aes256-wrap-pad", "id-aes256-wrap-pad", NID_id_aes256_wrap_pad, 9,
+     &kObjectData[5894], 0},
+    {"AES-128-CTR", "aes-128-ctr", NID_aes_128_ctr, 0, NULL, 0},
+    {"AES-192-CTR", "aes-192-ctr", NID_aes_192_ctr, 0, NULL, 0},
+    {"AES-256-CTR", "aes-256-ctr", NID_aes_256_ctr, 0, NULL, 0},
+    {"id-camellia128-wrap", "id-camellia128-wrap", NID_id_camellia128_wrap, 11,
+     &kObjectData[5903], 0},
+    {"id-camellia192-wrap", "id-camellia192-wrap", NID_id_camellia192_wrap, 11,
+     &kObjectData[5914], 0},
+    {"id-camellia256-wrap", "id-camellia256-wrap", NID_id_camellia256_wrap, 11,
+     &kObjectData[5925], 0},
+    {"anyExtendedKeyUsage", "Any Extended Key Usage", NID_anyExtendedKeyUsage,
+     4, &kObjectData[5936], 0},
+    {"MGF1", "mgf1", NID_mgf1, 9, &kObjectData[5940], 0},
+    {"RSASSA-PSS", "rsassaPss", NID_rsassaPss, 9, &kObjectData[5949], 0},
+    {"AES-128-XTS", "aes-128-xts", NID_aes_128_xts, 0, NULL, 0},
+    {"AES-256-XTS", "aes-256-xts", NID_aes_256_xts, 0, NULL, 0},
+    {"RC4-HMAC-MD5", "rc4-hmac-md5", NID_rc4_hmac_md5, 0, NULL, 0},
+    {"AES-128-CBC-HMAC-SHA1", "aes-128-cbc-hmac-sha1",
+     NID_aes_128_cbc_hmac_sha1, 0, NULL, 0},
+    {"AES-192-CBC-HMAC-SHA1", "aes-192-cbc-hmac-sha1",
+     NID_aes_192_cbc_hmac_sha1, 0, NULL, 0},
+    {"AES-256-CBC-HMAC-SHA1", "aes-256-cbc-hmac-sha1",
+     NID_aes_256_cbc_hmac_sha1, 0, NULL, 0},
+    {"RSAES-OAEP", "rsaesOaep", NID_rsaesOaep, 9, &kObjectData[5958], 0},
+    {"dhpublicnumber", "X9.42 DH", NID_dhpublicnumber, 7, &kObjectData[5967],
+     0},
+    {"brainpoolP160r1", "brainpoolP160r1", NID_brainpoolP160r1, 9,
+     &kObjectData[5974], 0},
+    {"brainpoolP160t1", "brainpoolP160t1", NID_brainpoolP160t1, 9,
+     &kObjectData[5983], 0},
+    {"brainpoolP192r1", "brainpoolP192r1", NID_brainpoolP192r1, 9,
+     &kObjectData[5992], 0},
+    {"brainpoolP192t1", "brainpoolP192t1", NID_brainpoolP192t1, 9,
+     &kObjectData[6001], 0},
+    {"brainpoolP224r1", "brainpoolP224r1", NID_brainpoolP224r1, 9,
+     &kObjectData[6010], 0},
+    {"brainpoolP224t1", "brainpoolP224t1", NID_brainpoolP224t1, 9,
+     &kObjectData[6019], 0},
+    {"brainpoolP256r1", "brainpoolP256r1", NID_brainpoolP256r1, 9,
+     &kObjectData[6028], 0},
+    {"brainpoolP256t1", "brainpoolP256t1", NID_brainpoolP256t1, 9,
+     &kObjectData[6037], 0},
+    {"brainpoolP320r1", "brainpoolP320r1", NID_brainpoolP320r1, 9,
+     &kObjectData[6046], 0},
+    {"brainpoolP320t1", "brainpoolP320t1", NID_brainpoolP320t1, 9,
+     &kObjectData[6055], 0},
+    {"brainpoolP384r1", "brainpoolP384r1", NID_brainpoolP384r1, 9,
+     &kObjectData[6064], 0},
+    {"brainpoolP384t1", "brainpoolP384t1", NID_brainpoolP384t1, 9,
+     &kObjectData[6073], 0},
+    {"brainpoolP512r1", "brainpoolP512r1", NID_brainpoolP512r1, 9,
+     &kObjectData[6082], 0},
+    {"brainpoolP512t1", "brainpoolP512t1", NID_brainpoolP512t1, 9,
+     &kObjectData[6091], 0},
+    {"PSPECIFIED", "pSpecified", NID_pSpecified, 9, &kObjectData[6100], 0},
+    {"dhSinglePass-stdDH-sha1kdf-scheme", "dhSinglePass-stdDH-sha1kdf-scheme",
+     NID_dhSinglePass_stdDH_sha1kdf_scheme, 9, &kObjectData[6109], 0},
+    {"dhSinglePass-stdDH-sha224kdf-scheme",
+     "dhSinglePass-stdDH-sha224kdf-scheme",
+     NID_dhSinglePass_stdDH_sha224kdf_scheme, 6, &kObjectData[6118], 0},
+    {"dhSinglePass-stdDH-sha256kdf-scheme",
+     "dhSinglePass-stdDH-sha256kdf-scheme",
+     NID_dhSinglePass_stdDH_sha256kdf_scheme, 6, &kObjectData[6124], 0},
+    {"dhSinglePass-stdDH-sha384kdf-scheme",
+     "dhSinglePass-stdDH-sha384kdf-scheme",
+     NID_dhSinglePass_stdDH_sha384kdf_scheme, 6, &kObjectData[6130], 0},
+    {"dhSinglePass-stdDH-sha512kdf-scheme",
+     "dhSinglePass-stdDH-sha512kdf-scheme",
+     NID_dhSinglePass_stdDH_sha512kdf_scheme, 6, &kObjectData[6136], 0},
+    {"dhSinglePass-cofactorDH-sha1kdf-scheme",
+     "dhSinglePass-cofactorDH-sha1kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha1kdf_scheme, 9, &kObjectData[6142], 0},
+    {"dhSinglePass-cofactorDH-sha224kdf-scheme",
+     "dhSinglePass-cofactorDH-sha224kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha224kdf_scheme, 6, &kObjectData[6151], 0},
+    {"dhSinglePass-cofactorDH-sha256kdf-scheme",
+     "dhSinglePass-cofactorDH-sha256kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha256kdf_scheme, 6, &kObjectData[6157], 0},
+    {"dhSinglePass-cofactorDH-sha384kdf-scheme",
+     "dhSinglePass-cofactorDH-sha384kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha384kdf_scheme, 6, &kObjectData[6163], 0},
+    {"dhSinglePass-cofactorDH-sha512kdf-scheme",
+     "dhSinglePass-cofactorDH-sha512kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha512kdf_scheme, 6, &kObjectData[6169], 0},
+    {"dh-std-kdf", "dh-std-kdf", NID_dh_std_kdf, 0, NULL, 0},
+    {"dh-cofactor-kdf", "dh-cofactor-kdf", NID_dh_cofactor_kdf, 0, NULL, 0},
+    {"X25519", "X25519", NID_X25519, 3, &kObjectData[6175], 0},
+    {"ED25519", "ED25519", NID_ED25519, 3, &kObjectData[6178], 0},
+    {"ChaCha20-Poly1305", "chacha20-poly1305", NID_chacha20_poly1305, 0, NULL,
+     0},
+    {"KxRSA", "kx-rsa", NID_kx_rsa, 0, NULL, 0},
+    {"KxECDHE", "kx-ecdhe", NID_kx_ecdhe, 0, NULL, 0},
+    {"KxPSK", "kx-psk", NID_kx_psk, 0, NULL, 0},
+    {"AuthRSA", "auth-rsa", NID_auth_rsa, 0, NULL, 0},
+    {"AuthECDSA", "auth-ecdsa", NID_auth_ecdsa, 0, NULL, 0},
+    {"AuthPSK", "auth-psk", NID_auth_psk, 0, NULL, 0},
+    {"KxANY", "kx-any", NID_kx_any, 0, NULL, 0},
+    {"AuthANY", "auth-any", NID_auth_any, 0, NULL, 0},
+    {"CECPQ2", "CECPQ2", NID_CECPQ2, 0, NULL, 0},
+    {"ED448", "ED448", NID_ED448, 3, &kObjectData[6181], 0},
+    {"X448", "X448", NID_X448, 3, &kObjectData[6184], 0},
+};
+
+static const uint16_t kNIDsInShortNameOrder[] = {
+    364 /* AD_DVCS */,
+    419 /* AES-128-CBC */,
+    916 /* AES-128-CBC-HMAC-SHA1 */,
+    421 /* AES-128-CFB */,
+    650 /* AES-128-CFB1 */,
+    653 /* AES-128-CFB8 */,
+    904 /* AES-128-CTR */,
+    418 /* AES-128-ECB */,
+    420 /* AES-128-OFB */,
+    913 /* AES-128-XTS */,
+    423 /* AES-192-CBC */,
+    917 /* AES-192-CBC-HMAC-SHA1 */,
+    425 /* AES-192-CFB */,
+    651 /* AES-192-CFB1 */,
+    654 /* AES-192-CFB8 */,
+    905 /* AES-192-CTR */,
+    422 /* AES-192-ECB */,
+    424 /* AES-192-OFB */,
+    427 /* AES-256-CBC */,
+    918 /* AES-256-CBC-HMAC-SHA1 */,
+    429 /* AES-256-CFB */,
+    652 /* AES-256-CFB1 */,
+    655 /* AES-256-CFB8 */,
+    906 /* AES-256-CTR */,
+    426 /* AES-256-ECB */,
+    428 /* AES-256-OFB */,
+    914 /* AES-256-XTS */,
+    958 /* AuthANY */,
+    955 /* AuthECDSA */,
+    956 /* AuthPSK */,
+    954 /* AuthRSA */,
+    91 /* BF-CBC */,
+    93 /* BF-CFB */,
+    92 /* BF-ECB */,
+    94 /* BF-OFB */,
+    14 /* C */,
+    751 /* CAMELLIA-128-CBC */,
+    757 /* CAMELLIA-128-CFB */,
+    760 /* CAMELLIA-128-CFB1 */,
+    763 /* CAMELLIA-128-CFB8 */,
+    754 /* CAMELLIA-128-ECB */,
+    766 /* CAMELLIA-128-OFB */,
+    752 /* CAMELLIA-192-CBC */,
+    758 /* CAMELLIA-192-CFB */,
+    761 /* CAMELLIA-192-CFB1 */,
+    764 /* CAMELLIA-192-CFB8 */,
+    755 /* CAMELLIA-192-ECB */,
+    767 /* CAMELLIA-192-OFB */,
+    753 /* CAMELLIA-256-CBC */,
+    759 /* CAMELLIA-256-CFB */,
+    762 /* CAMELLIA-256-CFB1 */,
+    765 /* CAMELLIA-256-CFB8 */,
+    756 /* CAMELLIA-256-ECB */,
+    768 /* CAMELLIA-256-OFB */,
+    108 /* CAST5-CBC */,
+    110 /* CAST5-CFB */,
+    109 /* CAST5-ECB */,
+    111 /* CAST5-OFB */,
+    959 /* CECPQ2 */,
+    894 /* CMAC */,
+    13 /* CN */,
+    141 /* CRLReason */,
+    417 /* CSPName */,
+    950 /* ChaCha20-Poly1305 */,
+    367 /* CrlID */,
+    391 /* DC */,
+    31 /* DES-CBC */,
+    643 /* DES-CDMF */,
+    30 /* DES-CFB */,
+    656 /* DES-CFB1 */,
+    657 /* DES-CFB8 */,
+    29 /* DES-ECB */,
+    32 /* DES-EDE */,
+    43 /* DES-EDE-CBC */,
+    60 /* DES-EDE-CFB */,
+    62 /* DES-EDE-OFB */,
+    33 /* DES-EDE3 */,
+    44 /* DES-EDE3-CBC */,
+    61 /* DES-EDE3-CFB */,
+    658 /* DES-EDE3-CFB1 */,
+    659 /* DES-EDE3-CFB8 */,
+    63 /* DES-EDE3-OFB */,
+    45 /* DES-OFB */,
+    80 /* DESX-CBC */,
+    380 /* DOD */,
+    116 /* DSA */,
+    66 /* DSA-SHA */,
+    113 /* DSA-SHA1 */,
+    70 /* DSA-SHA1-old */,
+    67 /* DSA-old */,
+    297 /* DVCS */,
+    949 /* ED25519 */,
+    960 /* ED448 */,
+    99 /* GN */,
+    855 /* HMAC */,
+    780 /* HMAC-MD5 */,
+    781 /* HMAC-SHA1 */,
+    381 /* IANA */,
+    34 /* IDEA-CBC */,
+    35 /* IDEA-CFB */,
+    36 /* IDEA-ECB */,
+    46 /* IDEA-OFB */,
+    181 /* ISO */,
+    183 /* ISO-US */,
+    645 /* ITU-T */,
+    646 /* JOINT-ISO-ITU-T */,
+    773 /* KISA */,
+    957 /* KxANY */,
+    952 /* KxECDHE */,
+    953 /* KxPSK */,
+    951 /* KxRSA */,
+    15 /* L */,
+    856 /* LocalKeySet */,
+    3 /* MD2 */,
+    257 /* MD4 */,
+    4 /* MD5 */,
+    114 /* MD5-SHA1 */,
+    95 /* MDC2 */,
+    911 /* MGF1 */,
+    388 /* Mail */,
+    57 /* Netscape */,
+    366 /* Nonce */,
+    17 /* O */,
+    178 /* OCSP */,
+    180 /* OCSPSigning */,
+    379 /* ORG */,
+    18 /* OU */,
+    749 /* Oakley-EC2N-3 */,
+    750 /* Oakley-EC2N-4 */,
+    9 /* PBE-MD2-DES */,
+    168 /* PBE-MD2-RC2-64 */,
+    10 /* PBE-MD5-DES */,
+    169 /* PBE-MD5-RC2-64 */,
+    147 /* PBE-SHA1-2DES */,
+    146 /* PBE-SHA1-3DES */,
+    170 /* PBE-SHA1-DES */,
+    148 /* PBE-SHA1-RC2-128 */,
+    149 /* PBE-SHA1-RC2-40 */,
+    68 /* PBE-SHA1-RC2-64 */,
+    144 /* PBE-SHA1-RC4-128 */,
+    145 /* PBE-SHA1-RC4-40 */,
+    161 /* PBES2 */,
+    69 /* PBKDF2 */,
+    162 /* PBMAC1 */,
+    127 /* PKIX */,
+    935 /* PSPECIFIED */,
+    98 /* RC2-40-CBC */,
+    166 /* RC2-64-CBC */,
+    37 /* RC2-CBC */,
+    39 /* RC2-CFB */,
+    38 /* RC2-ECB */,
+    40 /* RC2-OFB */,
+    5 /* RC4 */,
+    97 /* RC4-40 */,
+    915 /* RC4-HMAC-MD5 */,
+    120 /* RC5-CBC */,
+    122 /* RC5-CFB */,
+    121 /* RC5-ECB */,
+    123 /* RC5-OFB */,
+    117 /* RIPEMD160 */,
+    19 /* RSA */,
+    7 /* RSA-MD2 */,
+    396 /* RSA-MD4 */,
+    8 /* RSA-MD5 */,
+    96 /* RSA-MDC2 */,
+    104 /* RSA-NP-MD5 */,
+    119 /* RSA-RIPEMD160 */,
+    42 /* RSA-SHA */,
+    65 /* RSA-SHA1 */,
+    115 /* RSA-SHA1-2 */,
+    671 /* RSA-SHA224 */,
+    668 /* RSA-SHA256 */,
+    669 /* RSA-SHA384 */,
+    670 /* RSA-SHA512 */,
+    919 /* RSAES-OAEP */,
+    912 /* RSASSA-PSS */,
+    777 /* SEED-CBC */,
+    779 /* SEED-CFB */,
+    776 /* SEED-ECB */,
+    778 /* SEED-OFB */,
+    41 /* SHA */,
+    64 /* SHA1 */,
+    675 /* SHA224 */,
+    672 /* SHA256 */,
+    673 /* SHA384 */,
+    674 /* SHA512 */,
+    188 /* SMIME */,
+    167 /* SMIME-CAPS */,
+    100 /* SN */,
+    16 /* ST */,
+    143 /* SXNetID */,
+    458 /* UID */,
+    0 /* UNDEF */,
+    948 /* X25519 */,
+    961 /* X448 */,
+    11 /* X500 */,
+    378 /* X500algorithms */,
+    12 /* X509 */,
+    184 /* X9-57 */,
+    185 /* X9cm */,
+    125 /* ZLIB */,
+    478 /* aRecord */,
+    289 /* aaControls */,
+    287 /* ac-auditEntity */,
+    397 /* ac-proxying */,
+    288 /* ac-targeting */,
+    368 /* acceptableResponses */,
+    446 /* account */,
+    363 /* ad_timestamping */,
+    376 /* algorithm */,
+    405 /* ansi-X9-62 */,
+    910 /* anyExtendedKeyUsage */,
+    746 /* anyPolicy */,
+    370 /* archiveCutoff */,
+    484 /* associatedDomain */,
+    485 /* associatedName */,
+    501 /* audio */,
+    177 /* authorityInfoAccess */,
+    90 /* authorityKeyIdentifier */,
+    882 /* authorityRevocationList */,
+    87 /* basicConstraints */,
+    365 /* basicOCSPResponse */,
+    285 /* biometricInfo */,
+    921 /* brainpoolP160r1 */,
+    922 /* brainpoolP160t1 */,
+    923 /* brainpoolP192r1 */,
+    924 /* brainpoolP192t1 */,
+    925 /* brainpoolP224r1 */,
+    926 /* brainpoolP224t1 */,
+    927 /* brainpoolP256r1 */,
+    928 /* brainpoolP256t1 */,
+    929 /* brainpoolP320r1 */,
+    930 /* brainpoolP320t1 */,
+    931 /* brainpoolP384r1 */,
+    932 /* brainpoolP384t1 */,
+    933 /* brainpoolP512r1 */,
+    934 /* brainpoolP512t1 */,
+    494 /* buildingName */,
+    860 /* businessCategory */,
+    691 /* c2onb191v4 */,
+    692 /* c2onb191v5 */,
+    697 /* c2onb239v4 */,
+    698 /* c2onb239v5 */,
+    684 /* c2pnb163v1 */,
+    685 /* c2pnb163v2 */,
+    686 /* c2pnb163v3 */,
+    687 /* c2pnb176v1 */,
+    693 /* c2pnb208w1 */,
+    699 /* c2pnb272w1 */,
+    700 /* c2pnb304w1 */,
+    702 /* c2pnb368w1 */,
+    688 /* c2tnb191v1 */,
+    689 /* c2tnb191v2 */,
+    690 /* c2tnb191v3 */,
+    694 /* c2tnb239v1 */,
+    695 /* c2tnb239v2 */,
+    696 /* c2tnb239v3 */,
+    701 /* c2tnb359v1 */,
+    703 /* c2tnb431r1 */,
+    881 /* cACertificate */,
+    483 /* cNAMERecord */,
+    179 /* caIssuers */,
+    785 /* caRepository */,
+    443 /* caseIgnoreIA5StringSyntax */,
+    152 /* certBag */,
+    677 /* certicom-arc */,
+    771 /* certificateIssuer */,
+    89 /* certificatePolicies */,
+    883 /* certificateRevocationList */,
+    54 /* challengePassword */,
+    407 /* characteristic-two-field */,
+    395 /* clearance */,
+    130 /* clientAuth */,
+    131 /* codeSigning */,
+    50 /* contentType */,
+    53 /* countersignature */,
+    153 /* crlBag */,
+    103 /* crlDistributionPoints */,
+    88 /* crlNumber */,
+    884 /* crossCertificatePair */,
+    806 /* cryptocom */,
+    805 /* cryptopro */,
+    500 /* dITRedirect */,
+    451 /* dNSDomain */,
+    495 /* dSAQuality */,
+    434 /* data */,
+    390 /* dcobject */,
+    140 /* deltaCRL */,
+    891 /* deltaRevocationList */,
+    107 /* description */,
+    871 /* destinationIndicator */,
+    947 /* dh-cofactor-kdf */,
+    946 /* dh-std-kdf */,
+    28 /* dhKeyAgreement */,
+    941 /* dhSinglePass-cofactorDH-sha1kdf-scheme */,
+    942 /* dhSinglePass-cofactorDH-sha224kdf-scheme */,
+    943 /* dhSinglePass-cofactorDH-sha256kdf-scheme */,
+    944 /* dhSinglePass-cofactorDH-sha384kdf-scheme */,
+    945 /* dhSinglePass-cofactorDH-sha512kdf-scheme */,
+    936 /* dhSinglePass-stdDH-sha1kdf-scheme */,
+    937 /* dhSinglePass-stdDH-sha224kdf-scheme */,
+    938 /* dhSinglePass-stdDH-sha256kdf-scheme */,
+    939 /* dhSinglePass-stdDH-sha384kdf-scheme */,
+    940 /* dhSinglePass-stdDH-sha512kdf-scheme */,
+    920 /* dhpublicnumber */,
+    382 /* directory */,
+    887 /* distinguishedName */,
+    892 /* dmdName */,
+    174 /* dnQualifier */,
+    447 /* document */,
+    471 /* documentAuthor */,
+    468 /* documentIdentifier */,
+    472 /* documentLocation */,
+    502 /* documentPublisher */,
+    449 /* documentSeries */,
+    469 /* documentTitle */,
+    470 /* documentVersion */,
+    392 /* domain */,
+    452 /* domainRelatedObject */,
+    802 /* dsa_with_SHA224 */,
+    803 /* dsa_with_SHA256 */,
+    791 /* ecdsa-with-Recommended */,
+    416 /* ecdsa-with-SHA1 */,
+    793 /* ecdsa-with-SHA224 */,
+    794 /* ecdsa-with-SHA256 */,
+    795 /* ecdsa-with-SHA384 */,
+    796 /* ecdsa-with-SHA512 */,
+    792 /* ecdsa-with-Specified */,
+    48 /* emailAddress */,
+    132 /* emailProtection */,
+    885 /* enhancedSearchGuide */,
+    389 /* enterprises */,
+    384 /* experimental */,
+    172 /* extReq */,
+    56 /* extendedCertificateAttributes */,
+    126 /* extendedKeyUsage */,
+    372 /* extendedStatus */,
+    867 /* facsimileTelephoneNumber */,
+    462 /* favouriteDrink */,
+    857 /* freshestCRL */,
+    453 /* friendlyCountry */,
+    490 /* friendlyCountryName */,
+    156 /* friendlyName */,
+    509 /* generationQualifier */,
+    815 /* gost-mac */,
+    811 /* gost2001 */,
+    851 /* gost2001cc */,
+    813 /* gost89 */,
+    814 /* gost89-cnt */,
+    812 /* gost94 */,
+    850 /* gost94cc */,
+    797 /* hmacWithMD5 */,
+    163 /* hmacWithSHA1 */,
+    798 /* hmacWithSHA224 */,
+    799 /* hmacWithSHA256 */,
+    800 /* hmacWithSHA384 */,
+    801 /* hmacWithSHA512 */,
+    432 /* holdInstructionCallIssuer */,
+    430 /* holdInstructionCode */,
+    431 /* holdInstructionNone */,
+    433 /* holdInstructionReject */,
+    486 /* homePostalAddress */,
+    473 /* homeTelephoneNumber */,
+    466 /* host */,
+    889 /* houseIdentifier */,
+    442 /* iA5StringSyntax */,
+    783 /* id-DHBasedMac */,
+    824 /* id-Gost28147-89-CryptoPro-A-ParamSet */,
+    825 /* id-Gost28147-89-CryptoPro-B-ParamSet */,
+    826 /* id-Gost28147-89-CryptoPro-C-ParamSet */,
+    827 /* id-Gost28147-89-CryptoPro-D-ParamSet */,
+    819 /* id-Gost28147-89-CryptoPro-KeyMeshing */,
+    829 /* id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet */,
+    828 /* id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet */,
+    830 /* id-Gost28147-89-CryptoPro-RIC-1-ParamSet */,
+    820 /* id-Gost28147-89-None-KeyMeshing */,
+    823 /* id-Gost28147-89-TestParamSet */,
+    849 /* id-Gost28147-89-cc */,
+    840 /* id-GostR3410-2001-CryptoPro-A-ParamSet */,
+    841 /* id-GostR3410-2001-CryptoPro-B-ParamSet */,
+    842 /* id-GostR3410-2001-CryptoPro-C-ParamSet */,
+    843 /* id-GostR3410-2001-CryptoPro-XchA-ParamSet */,
+    844 /* id-GostR3410-2001-CryptoPro-XchB-ParamSet */,
+    854 /* id-GostR3410-2001-ParamSet-cc */,
+    839 /* id-GostR3410-2001-TestParamSet */,
+    817 /* id-GostR3410-2001DH */,
+    832 /* id-GostR3410-94-CryptoPro-A-ParamSet */,
+    833 /* id-GostR3410-94-CryptoPro-B-ParamSet */,
+    834 /* id-GostR3410-94-CryptoPro-C-ParamSet */,
+    835 /* id-GostR3410-94-CryptoPro-D-ParamSet */,
+    836 /* id-GostR3410-94-CryptoPro-XchA-ParamSet */,
+    837 /* id-GostR3410-94-CryptoPro-XchB-ParamSet */,
+    838 /* id-GostR3410-94-CryptoPro-XchC-ParamSet */,
+    831 /* id-GostR3410-94-TestParamSet */,
+    845 /* id-GostR3410-94-a */,
+    846 /* id-GostR3410-94-aBis */,
+    847 /* id-GostR3410-94-b */,
+    848 /* id-GostR3410-94-bBis */,
+    818 /* id-GostR3410-94DH */,
+    822 /* id-GostR3411-94-CryptoProParamSet */,
+    821 /* id-GostR3411-94-TestParamSet */,
+    807 /* id-GostR3411-94-with-GostR3410-2001 */,
+    853 /* id-GostR3411-94-with-GostR3410-2001-cc */,
+    808 /* id-GostR3411-94-with-GostR3410-94 */,
+    852 /* id-GostR3411-94-with-GostR3410-94-cc */,
+    810 /* id-HMACGostR3411-94 */,
+    782 /* id-PasswordBasedMAC */,
+    266 /* id-aca */,
+    355 /* id-aca-accessIdentity */,
+    354 /* id-aca-authenticationInfo */,
+    356 /* id-aca-chargingIdentity */,
+    399 /* id-aca-encAttrs */,
+    357 /* id-aca-group */,
+    358 /* id-aca-role */,
+    176 /* id-ad */,
+    896 /* id-aes128-CCM */,
+    895 /* id-aes128-GCM */,
+    788 /* id-aes128-wrap */,
+    897 /* id-aes128-wrap-pad */,
+    899 /* id-aes192-CCM */,
+    898 /* id-aes192-GCM */,
+    789 /* id-aes192-wrap */,
+    900 /* id-aes192-wrap-pad */,
+    902 /* id-aes256-CCM */,
+    901 /* id-aes256-GCM */,
+    790 /* id-aes256-wrap */,
+    903 /* id-aes256-wrap-pad */,
+    262 /* id-alg */,
+    893 /* id-alg-PWRI-KEK */,
+    323 /* id-alg-des40 */,
+    326 /* id-alg-dh-pop */,
+    325 /* id-alg-dh-sig-hmac-sha1 */,
+    324 /* id-alg-noSignature */,
+    907 /* id-camellia128-wrap */,
+    908 /* id-camellia192-wrap */,
+    909 /* id-camellia256-wrap */,
+    268 /* id-cct */,
+    361 /* id-cct-PKIData */,
+    362 /* id-cct-PKIResponse */,
+    360 /* id-cct-crs */,
+    81 /* id-ce */,
+    680 /* id-characteristic-two-basis */,
+    263 /* id-cmc */,
+    334 /* id-cmc-addExtensions */,
+    346 /* id-cmc-confirmCertAcceptance */,
+    330 /* id-cmc-dataReturn */,
+    336 /* id-cmc-decryptedPOP */,
+    335 /* id-cmc-encryptedPOP */,
+    339 /* id-cmc-getCRL */,
+    338 /* id-cmc-getCert */,
+    328 /* id-cmc-identification */,
+    329 /* id-cmc-identityProof */,
+    337 /* id-cmc-lraPOPWitness */,
+    344 /* id-cmc-popLinkRandom */,
+    345 /* id-cmc-popLinkWitness */,
+    343 /* id-cmc-queryPending */,
+    333 /* id-cmc-recipientNonce */,
+    341 /* id-cmc-regInfo */,
+    342 /* id-cmc-responseInfo */,
+    340 /* id-cmc-revokeRequest */,
+    332 /* id-cmc-senderNonce */,
+    327 /* id-cmc-statusInfo */,
+    331 /* id-cmc-transactionId */,
+    787 /* id-ct-asciiTextWithCRLF */,
+    408 /* id-ecPublicKey */,
+    508 /* id-hex-multipart-message */,
+    507 /* id-hex-partial-message */,
+    260 /* id-it */,
+    302 /* id-it-caKeyUpdateInfo */,
+    298 /* id-it-caProtEncCert */,
+    311 /* id-it-confirmWaitTime */,
+    303 /* id-it-currentCRL */,
+    300 /* id-it-encKeyPairTypes */,
+    310 /* id-it-implicitConfirm */,
+    308 /* id-it-keyPairParamRep */,
+    307 /* id-it-keyPairParamReq */,
+    312 /* id-it-origPKIMessage */,
+    301 /* id-it-preferredSymmAlg */,
+    309 /* id-it-revPassphrase */,
+    299 /* id-it-signKeyPairTypes */,
+    305 /* id-it-subscriptionRequest */,
+    306 /* id-it-subscriptionResponse */,
+    784 /* id-it-suppLangTags */,
+    304 /* id-it-unsupportedOIDs */,
+    128 /* id-kp */,
+    280 /* id-mod-attribute-cert */,
+    274 /* id-mod-cmc */,
+    277 /* id-mod-cmp */,
+    284 /* id-mod-cmp2000 */,
+    273 /* id-mod-crmf */,
+    283 /* id-mod-dvcs */,
+    275 /* id-mod-kea-profile-88 */,
+    276 /* id-mod-kea-profile-93 */,
+    282 /* id-mod-ocsp */,
+    278 /* id-mod-qualified-cert-88 */,
+    279 /* id-mod-qualified-cert-93 */,
+    281 /* id-mod-timestamp-protocol */,
+    264 /* id-on */,
+    858 /* id-on-permanentIdentifier */,
+    347 /* id-on-personalData */,
+    265 /* id-pda */,
+    352 /* id-pda-countryOfCitizenship */,
+    353 /* id-pda-countryOfResidence */,
+    348 /* id-pda-dateOfBirth */,
+    351 /* id-pda-gender */,
+    349 /* id-pda-placeOfBirth */,
+    175 /* id-pe */,
+    261 /* id-pkip */,
+    258 /* id-pkix-mod */,
+    269 /* id-pkix1-explicit-88 */,
+    271 /* id-pkix1-explicit-93 */,
+    270 /* id-pkix1-implicit-88 */,
+    272 /* id-pkix1-implicit-93 */,
+    662 /* id-ppl */,
+    664 /* id-ppl-anyLanguage */,
+    667 /* id-ppl-independent */,
+    665 /* id-ppl-inheritAll */,
+    267 /* id-qcs */,
+    359 /* id-qcs-pkixQCSyntax-v1 */,
+    259 /* id-qt */,
+    164 /* id-qt-cps */,
+    165 /* id-qt-unotice */,
+    313 /* id-regCtrl */,
+    316 /* id-regCtrl-authenticator */,
+    319 /* id-regCtrl-oldCertID */,
+    318 /* id-regCtrl-pkiArchiveOptions */,
+    317 /* id-regCtrl-pkiPublicationInfo */,
+    320 /* id-regCtrl-protocolEncrKey */,
+    315 /* id-regCtrl-regToken */,
+    314 /* id-regInfo */,
+    322 /* id-regInfo-certReq */,
+    321 /* id-regInfo-utf8Pairs */,
+    512 /* id-set */,
+    191 /* id-smime-aa */,
+    215 /* id-smime-aa-contentHint */,
+    218 /* id-smime-aa-contentIdentifier */,
+    221 /* id-smime-aa-contentReference */,
+    240 /* id-smime-aa-dvcs-dvc */,
+    217 /* id-smime-aa-encapContentType */,
+    222 /* id-smime-aa-encrypKeyPref */,
+    220 /* id-smime-aa-equivalentLabels */,
+    232 /* id-smime-aa-ets-CertificateRefs */,
+    233 /* id-smime-aa-ets-RevocationRefs */,
+    238 /* id-smime-aa-ets-archiveTimeStamp */,
+    237 /* id-smime-aa-ets-certCRLTimestamp */,
+    234 /* id-smime-aa-ets-certValues */,
+    227 /* id-smime-aa-ets-commitmentType */,
+    231 /* id-smime-aa-ets-contentTimestamp */,
+    236 /* id-smime-aa-ets-escTimeStamp */,
+    230 /* id-smime-aa-ets-otherSigCert */,
+    235 /* id-smime-aa-ets-revocationValues */,
+    226 /* id-smime-aa-ets-sigPolicyId */,
+    229 /* id-smime-aa-ets-signerAttr */,
+    228 /* id-smime-aa-ets-signerLocation */,
+    219 /* id-smime-aa-macValue */,
+    214 /* id-smime-aa-mlExpandHistory */,
+    216 /* id-smime-aa-msgSigDigest */,
+    212 /* id-smime-aa-receiptRequest */,
+    213 /* id-smime-aa-securityLabel */,
+    239 /* id-smime-aa-signatureType */,
+    223 /* id-smime-aa-signingCertificate */,
+    224 /* id-smime-aa-smimeEncryptCerts */,
+    225 /* id-smime-aa-timeStampToken */,
+    192 /* id-smime-alg */,
+    243 /* id-smime-alg-3DESwrap */,
+    246 /* id-smime-alg-CMS3DESwrap */,
+    247 /* id-smime-alg-CMSRC2wrap */,
+    245 /* id-smime-alg-ESDH */,
+    241 /* id-smime-alg-ESDHwith3DES */,
+    242 /* id-smime-alg-ESDHwithRC2 */,
+    244 /* id-smime-alg-RC2wrap */,
+    193 /* id-smime-cd */,
+    248 /* id-smime-cd-ldap */,
+    190 /* id-smime-ct */,
+    210 /* id-smime-ct-DVCSRequestData */,
+    211 /* id-smime-ct-DVCSResponseData */,
+    208 /* id-smime-ct-TDTInfo */,
+    207 /* id-smime-ct-TSTInfo */,
+    205 /* id-smime-ct-authData */,
+    786 /* id-smime-ct-compressedData */,
+    209 /* id-smime-ct-contentInfo */,
+    206 /* id-smime-ct-publishCert */,
+    204 /* id-smime-ct-receipt */,
+    195 /* id-smime-cti */,
+    255 /* id-smime-cti-ets-proofOfApproval */,
+    256 /* id-smime-cti-ets-proofOfCreation */,
+    253 /* id-smime-cti-ets-proofOfDelivery */,
+    251 /* id-smime-cti-ets-proofOfOrigin */,
+    252 /* id-smime-cti-ets-proofOfReceipt */,
+    254 /* id-smime-cti-ets-proofOfSender */,
+    189 /* id-smime-mod */,
+    196 /* id-smime-mod-cms */,
+    197 /* id-smime-mod-ess */,
+    202 /* id-smime-mod-ets-eSigPolicy-88 */,
+    203 /* id-smime-mod-ets-eSigPolicy-97 */,
+    200 /* id-smime-mod-ets-eSignature-88 */,
+    201 /* id-smime-mod-ets-eSignature-97 */,
+    199 /* id-smime-mod-msg-v3 */,
+    198 /* id-smime-mod-oid */,
+    194 /* id-smime-spq */,
+    250 /* id-smime-spq-ets-sqt-unotice */,
+    249 /* id-smime-spq-ets-sqt-uri */,
+    676 /* identified-organization */,
+    461 /* info */,
+    748 /* inhibitAnyPolicy */,
+    101 /* initials */,
+    647 /* international-organizations */,
+    869 /* internationaliSDNNumber */,
+    142 /* invalidityDate */,
+    294 /* ipsecEndSystem */,
+    295 /* ipsecTunnel */,
+    296 /* ipsecUser */,
+    86 /* issuerAltName */,
+    770 /* issuingDistributionPoint */,
+    492 /* janetMailbox */,
+    150 /* keyBag */,
+    83 /* keyUsage */,
+    477 /* lastModifiedBy */,
+    476 /* lastModifiedTime */,
+    157 /* localKeyID */,
+    480 /* mXRecord */,
+    460 /* mail */,
+    493 /* mailPreferenceOption */,
+    467 /* manager */,
+    809 /* md_gost94 */,
+    875 /* member */,
+    182 /* member-body */,
+    51 /* messageDigest */,
+    383 /* mgmt */,
+    504 /* mime-mhs */,
+    506 /* mime-mhs-bodies */,
+    505 /* mime-mhs-headings */,
+    488 /* mobileTelephoneNumber */,
+    136 /* msCTLSign */,
+    135 /* msCodeCom */,
+    134 /* msCodeInd */,
+    138 /* msEFS */,
+    171 /* msExtReq */,
+    137 /* msSGC */,
+    648 /* msSmartcardLogin */,
+    649 /* msUPN */,
+    481 /* nSRecord */,
+    173 /* name */,
+    666 /* nameConstraints */,
+    369 /* noCheck */,
+    403 /* noRevAvail */,
+    72 /* nsBaseUrl */,
+    76 /* nsCaPolicyUrl */,
+    74 /* nsCaRevocationUrl */,
+    58 /* nsCertExt */,
+    79 /* nsCertSequence */,
+    71 /* nsCertType */,
+    78 /* nsComment */,
+    59 /* nsDataType */,
+    75 /* nsRenewalUrl */,
+    73 /* nsRevocationUrl */,
+    139 /* nsSGC */,
+    77 /* nsSslServerName */,
+    681 /* onBasis */,
+    491 /* organizationalStatus */,
+    475 /* otherMailbox */,
+    876 /* owner */,
+    489 /* pagerTelephoneNumber */,
+    374 /* path */,
+    112 /* pbeWithMD5AndCast5CBC */,
+    499 /* personalSignature */,
+    487 /* personalTitle */,
+    464 /* photo */,
+    863 /* physicalDeliveryOfficeName */,
+    437 /* pilot */,
+    439 /* pilotAttributeSyntax */,
+    438 /* pilotAttributeType */,
+    479 /* pilotAttributeType27 */,
+    456 /* pilotDSA */,
+    441 /* pilotGroups */,
+    444 /* pilotObject */,
+    440 /* pilotObjectClass */,
+    455 /* pilotOrganization */,
+    445 /* pilotPerson */,
+    2 /* pkcs */,
+    186 /* pkcs1 */,
+    27 /* pkcs3 */,
+    187 /* pkcs5 */,
+    20 /* pkcs7 */,
+    21 /* pkcs7-data */,
+    25 /* pkcs7-digestData */,
+    26 /* pkcs7-encryptedData */,
+    23 /* pkcs7-envelopedData */,
+    24 /* pkcs7-signedAndEnvelopedData */,
+    22 /* pkcs7-signedData */,
+    151 /* pkcs8ShroudedKeyBag */,
+    47 /* pkcs9 */,
+    401 /* policyConstraints */,
+    747 /* policyMappings */,
+    862 /* postOfficeBox */,
+    861 /* postalAddress */,
+    661 /* postalCode */,
+    683 /* ppBasis */,
+    872 /* preferredDeliveryMethod */,
+    873 /* presentationAddress */,
+    816 /* prf-gostr3411-94 */,
+    406 /* prime-field */,
+    409 /* prime192v1 */,
+    410 /* prime192v2 */,
+    411 /* prime192v3 */,
+    412 /* prime239v1 */,
+    413 /* prime239v2 */,
+    414 /* prime239v3 */,
+    415 /* prime256v1 */,
+    385 /* private */,
+    84 /* privateKeyUsagePeriod */,
+    886 /* protocolInformation */,
+    663 /* proxyCertInfo */,
+    510 /* pseudonym */,
+    435 /* pss */,
+    286 /* qcStatements */,
+    457 /* qualityLabelledData */,
+    450 /* rFC822localPart */,
+    870 /* registeredAddress */,
+    400 /* role */,
+    877 /* roleOccupant */,
+    448 /* room */,
+    463 /* roomNumber */,
+    6 /* rsaEncryption */,
+    644 /* rsaOAEPEncryptionSET */,
+    377 /* rsaSignature */,
+    1 /* rsadsi */,
+    482 /* sOARecord */,
+    155 /* safeContentsBag */,
+    291 /* sbgp-autonomousSysNum */,
+    290 /* sbgp-ipAddrBlock */,
+    292 /* sbgp-routerIdentifier */,
+    159 /* sdsiCertificate */,
+    859 /* searchGuide */,
+    704 /* secp112r1 */,
+    705 /* secp112r2 */,
+    706 /* secp128r1 */,
+    707 /* secp128r2 */,
+    708 /* secp160k1 */,
+    709 /* secp160r1 */,
+    710 /* secp160r2 */,
+    711 /* secp192k1 */,
+    712 /* secp224k1 */,
+    713 /* secp224r1 */,
+    714 /* secp256k1 */,
+    715 /* secp384r1 */,
+    716 /* secp521r1 */,
+    154 /* secretBag */,
+    474 /* secretary */,
+    717 /* sect113r1 */,
+    718 /* sect113r2 */,
+    719 /* sect131r1 */,
+    720 /* sect131r2 */,
+    721 /* sect163k1 */,
+    722 /* sect163r1 */,
+    723 /* sect163r2 */,
+    724 /* sect193r1 */,
+    725 /* sect193r2 */,
+    726 /* sect233k1 */,
+    727 /* sect233r1 */,
+    728 /* sect239k1 */,
+    729 /* sect283k1 */,
+    730 /* sect283r1 */,
+    731 /* sect409k1 */,
+    732 /* sect409r1 */,
+    733 /* sect571k1 */,
+    734 /* sect571r1 */,
+    386 /* security */,
+    878 /* seeAlso */,
+    394 /* selected-attribute-types */,
+    105 /* serialNumber */,
+    129 /* serverAuth */,
+    371 /* serviceLocator */,
+    625 /* set-addPolicy */,
+    515 /* set-attr */,
+    518 /* set-brand */,
+    638 /* set-brand-AmericanExpress */,
+    637 /* set-brand-Diners */,
+    636 /* set-brand-IATA-ATA */,
+    639 /* set-brand-JCB */,
+    641 /* set-brand-MasterCard */,
+    642 /* set-brand-Novus */,
+    640 /* set-brand-Visa */,
+    517 /* set-certExt */,
+    513 /* set-ctype */,
+    514 /* set-msgExt */,
+    516 /* set-policy */,
+    607 /* set-policy-root */,
+    624 /* set-rootKeyThumb */,
+    620 /* setAttr-Cert */,
+    631 /* setAttr-GenCryptgrm */,
+    623 /* setAttr-IssCap */,
+    628 /* setAttr-IssCap-CVM */,
+    630 /* setAttr-IssCap-Sig */,
+    629 /* setAttr-IssCap-T2 */,
+    621 /* setAttr-PGWYcap */,
+    635 /* setAttr-SecDevSig */,
+    632 /* setAttr-T2Enc */,
+    633 /* setAttr-T2cleartxt */,
+    634 /* setAttr-TokICCsig */,
+    627 /* setAttr-Token-B0Prime */,
+    626 /* setAttr-Token-EMV */,
+    622 /* setAttr-TokenType */,
+    619 /* setCext-IssuerCapabilities */,
+    615 /* setCext-PGWYcapabilities */,
+    616 /* setCext-TokenIdentifier */,
+    618 /* setCext-TokenType */,
+    617 /* setCext-Track2Data */,
+    611 /* setCext-cCertRequired */,
+    609 /* setCext-certType */,
+    608 /* setCext-hashedRoot */,
+    610 /* setCext-merchData */,
+    613 /* setCext-setExt */,
+    614 /* setCext-setQualf */,
+    612 /* setCext-tunneling */,
+    540 /* setct-AcqCardCodeMsg */,
+    576 /* setct-AcqCardCodeMsgTBE */,
+    570 /* setct-AuthReqTBE */,
+    534 /* setct-AuthReqTBS */,
+    527 /* setct-AuthResBaggage */,
+    571 /* setct-AuthResTBE */,
+    572 /* setct-AuthResTBEX */,
+    535 /* setct-AuthResTBS */,
+    536 /* setct-AuthResTBSX */,
+    528 /* setct-AuthRevReqBaggage */,
+    577 /* setct-AuthRevReqTBE */,
+    541 /* setct-AuthRevReqTBS */,
+    529 /* setct-AuthRevResBaggage */,
+    542 /* setct-AuthRevResData */,
+    578 /* setct-AuthRevResTBE */,
+    579 /* setct-AuthRevResTBEB */,
+    543 /* setct-AuthRevResTBS */,
+    573 /* setct-AuthTokenTBE */,
+    537 /* setct-AuthTokenTBS */,
+    600 /* setct-BCIDistributionTBS */,
+    558 /* setct-BatchAdminReqData */,
+    592 /* setct-BatchAdminReqTBE */,
+    559 /* setct-BatchAdminResData */,
+    593 /* setct-BatchAdminResTBE */,
+    599 /* setct-CRLNotificationResTBS */,
+    598 /* setct-CRLNotificationTBS */,
+    580 /* setct-CapReqTBE */,
+    581 /* setct-CapReqTBEX */,
+    544 /* setct-CapReqTBS */,
+    545 /* setct-CapReqTBSX */,
+    546 /* setct-CapResData */,
+    582 /* setct-CapResTBE */,
+    583 /* setct-CapRevReqTBE */,
+    584 /* setct-CapRevReqTBEX */,
+    547 /* setct-CapRevReqTBS */,
+    548 /* setct-CapRevReqTBSX */,
+    549 /* setct-CapRevResData */,
+    585 /* setct-CapRevResTBE */,
+    538 /* setct-CapTokenData */,
+    530 /* setct-CapTokenSeq */,
+    574 /* setct-CapTokenTBE */,
+    575 /* setct-CapTokenTBEX */,
+    539 /* setct-CapTokenTBS */,
+    560 /* setct-CardCInitResTBS */,
+    566 /* setct-CertInqReqTBS */,
+    563 /* setct-CertReqData */,
+    595 /* setct-CertReqTBE */,
+    596 /* setct-CertReqTBEX */,
+    564 /* setct-CertReqTBS */,
+    565 /* setct-CertResData */,
+    597 /* setct-CertResTBE */,
+    586 /* setct-CredReqTBE */,
+    587 /* setct-CredReqTBEX */,
+    550 /* setct-CredReqTBS */,
+    551 /* setct-CredReqTBSX */,
+    552 /* setct-CredResData */,
+    588 /* setct-CredResTBE */,
+    589 /* setct-CredRevReqTBE */,
+    590 /* setct-CredRevReqTBEX */,
+    553 /* setct-CredRevReqTBS */,
+    554 /* setct-CredRevReqTBSX */,
+    555 /* setct-CredRevResData */,
+    591 /* setct-CredRevResTBE */,
+    567 /* setct-ErrorTBS */,
+    526 /* setct-HODInput */,
+    561 /* setct-MeAqCInitResTBS */,
+    522 /* setct-OIData */,
+    519 /* setct-PANData */,
+    521 /* setct-PANOnly */,
+    520 /* setct-PANToken */,
+    556 /* setct-PCertReqData */,
+    557 /* setct-PCertResTBS */,
+    523 /* setct-PI */,
+    532 /* setct-PI-TBS */,
+    524 /* setct-PIData */,
+    525 /* setct-PIDataUnsigned */,
+    568 /* setct-PIDualSignedTBE */,
+    569 /* setct-PIUnsignedTBE */,
+    531 /* setct-PInitResData */,
+    533 /* setct-PResData */,
+    594 /* setct-RegFormReqTBE */,
+    562 /* setct-RegFormResTBS */,
+    606 /* setext-cv */,
+    601 /* setext-genCrypt */,
+    602 /* setext-miAuth */,
+    604 /* setext-pinAny */,
+    603 /* setext-pinSecure */,
+    605 /* setext-track2 */,
+    52 /* signingTime */,
+    454 /* simpleSecurityObject */,
+    496 /* singleLevelQuality */,
+    387 /* snmpv2 */,
+    660 /* street */,
+    85 /* subjectAltName */,
+    769 /* subjectDirectoryAttributes */,
+    398 /* subjectInfoAccess */,
+    82 /* subjectKeyIdentifier */,
+    498 /* subtreeMaximumQuality */,
+    497 /* subtreeMinimumQuality */,
+    890 /* supportedAlgorithms */,
+    874 /* supportedApplicationContext */,
+    402 /* targetInformation */,
+    864 /* telephoneNumber */,
+    866 /* teletexTerminalIdentifier */,
+    865 /* telexNumber */,
+    459 /* textEncodedORAddress */,
+    293 /* textNotice */,
+    133 /* timeStamping */,
+    106 /* title */,
+    682 /* tpBasis */,
+    375 /* trustRoot */,
+    436 /* ucl */,
+    888 /* uniqueMember */,
+    55 /* unstructuredAddress */,
+    49 /* unstructuredName */,
+    880 /* userCertificate */,
+    465 /* userClass */,
+    879 /* userPassword */,
+    373 /* valid */,
+    678 /* wap */,
+    679 /* wap-wsg */,
+    735 /* wap-wsg-idm-ecid-wtls1 */,
+    743 /* wap-wsg-idm-ecid-wtls10 */,
+    744 /* wap-wsg-idm-ecid-wtls11 */,
+    745 /* wap-wsg-idm-ecid-wtls12 */,
+    736 /* wap-wsg-idm-ecid-wtls3 */,
+    737 /* wap-wsg-idm-ecid-wtls4 */,
+    738 /* wap-wsg-idm-ecid-wtls5 */,
+    739 /* wap-wsg-idm-ecid-wtls6 */,
+    740 /* wap-wsg-idm-ecid-wtls7 */,
+    741 /* wap-wsg-idm-ecid-wtls8 */,
+    742 /* wap-wsg-idm-ecid-wtls9 */,
+    804 /* whirlpool */,
+    868 /* x121Address */,
+    503 /* x500UniqueIdentifier */,
+    158 /* x509Certificate */,
+    160 /* x509Crl */,
+};
+
+static const uint16_t kNIDsInLongNameOrder[] = {
+    363 /* AD Time Stamping */,
+    405 /* ANSI X9.62 */,
+    368 /* Acceptable OCSP Responses */,
+    910 /* Any Extended Key Usage */,
+    664 /* Any language */,
+    177 /* Authority Information Access */,
+    365 /* Basic OCSP Response */,
+    285 /* Biometric Info */,
+    179 /* CA Issuers */,
+    785 /* CA Repository */,
+    959 /* CECPQ2 */,
+    131 /* Code Signing */,
+    783 /* Diffie-Hellman based MAC */,
+    382 /* Directory */,
+    392 /* Domain */,
+    132 /* E-mail Protection */,
+    949 /* ED25519 */,
+    960 /* ED448 */,
+    389 /* Enterprises */,
+    384 /* Experimental */,
+    372 /* Extended OCSP Status */,
+    172 /* Extension Request */,
+    813 /* GOST 28147-89 */,
+    849 /* GOST 28147-89 Cryptocom ParamSet */,
+    815 /* GOST 28147-89 MAC */,
+    851 /* GOST 34.10-2001 Cryptocom */,
+    850 /* GOST 34.10-94 Cryptocom */,
+    811 /* GOST R 34.10-2001 */,
+    817 /* GOST R 34.10-2001 DH */,
+    812 /* GOST R 34.10-94 */,
+    818 /* GOST R 34.10-94 DH */,
+    809 /* GOST R 34.11-94 */,
+    816 /* GOST R 34.11-94 PRF */,
+    807 /* GOST R 34.11-94 with GOST R 34.10-2001 */,
+    853 /* GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom */,
+    808 /* GOST R 34.11-94 with GOST R 34.10-94 */,
+    852 /* GOST R 34.11-94 with GOST R 34.10-94 Cryptocom */,
+    854 /* GOST R 3410-2001 Parameter Set Cryptocom */,
+    810 /* HMAC GOST 34.11-94 */,
+    432 /* Hold Instruction Call Issuer */,
+    430 /* Hold Instruction Code */,
+    431 /* Hold Instruction None */,
+    433 /* Hold Instruction Reject */,
+    634 /* ICC or token signature */,
+    294 /* IPSec End System */,
+    295 /* IPSec Tunnel */,
+    296 /* IPSec User */,
+    182 /* ISO Member Body */,
+    183 /* ISO US Member Body */,
+    667 /* Independent */,
+    665 /* Inherit all */,
+    647 /* International Organizations */,
+    142 /* Invalidity Date */,
+    504 /* MIME MHS */,
+    388 /* Mail */,
+    383 /* Management */,
+    417 /* Microsoft CSP Name */,
+    135 /* Microsoft Commercial Code Signing */,
+    138 /* Microsoft Encrypted File System */,
+    171 /* Microsoft Extension Request */,
+    134 /* Microsoft Individual Code Signing */,
+    856 /* Microsoft Local Key set */,
+    137 /* Microsoft Server Gated Crypto */,
+    648 /* Microsoft Smartcardlogin */,
+    136 /* Microsoft Trust List Signing */,
+    649 /* Microsoft Universal Principal Name */,
+    72 /* Netscape Base Url */,
+    76 /* Netscape CA Policy Url */,
+    74 /* Netscape CA Revocation Url */,
+    71 /* Netscape Cert Type */,
+    58 /* Netscape Certificate Extension */,
+    79 /* Netscape Certificate Sequence */,
+    78 /* Netscape Comment */,
+    57 /* Netscape Communications Corp. */,
+    59 /* Netscape Data Type */,
+    75 /* Netscape Renewal Url */,
+    73 /* Netscape Revocation Url */,
+    77 /* Netscape SSL Server Name */,
+    139 /* Netscape Server Gated Crypto */,
+    178 /* OCSP */,
+    370 /* OCSP Archive Cutoff */,
+    367 /* OCSP CRL ID */,
+    369 /* OCSP No Check */,
+    366 /* OCSP Nonce */,
+    371 /* OCSP Service Locator */,
+    180 /* OCSP Signing */,
+    161 /* PBES2 */,
+    69 /* PBKDF2 */,
+    162 /* PBMAC1 */,
+    127 /* PKIX */,
+    858 /* Permanent Identifier */,
+    164 /* Policy Qualifier CPS */,
+    165 /* Policy Qualifier User Notice */,
+    385 /* Private */,
+    663 /* Proxy Certificate Information */,
+    1 /* RSA Data Security, Inc. */,
+    2 /* RSA Data Security, Inc. PKCS */,
+    188 /* S/MIME */,
+    167 /* S/MIME Capabilities */,
+    387 /* SNMPv2 */,
+    512 /* Secure Electronic Transactions */,
+    386 /* Security */,
+    394 /* Selected Attribute Types */,
+    143 /* Strong Extranet ID */,
+    398 /* Subject Information Access */,
+    130 /* TLS Web Client Authentication */,
+    129 /* TLS Web Server Authentication */,
+    133 /* Time Stamping */,
+    375 /* Trust Root */,
+    948 /* X25519 */,
+    961 /* X448 */,
+    12 /* X509 */,
+    402 /* X509v3 AC Targeting */,
+    746 /* X509v3 Any Policy */,
+    90 /* X509v3 Authority Key Identifier */,
+    87 /* X509v3 Basic Constraints */,
+    103 /* X509v3 CRL Distribution Points */,
+    88 /* X509v3 CRL Number */,
+    141 /* X509v3 CRL Reason Code */,
+    771 /* X509v3 Certificate Issuer */,
+    89 /* X509v3 Certificate Policies */,
+    140 /* X509v3 Delta CRL Indicator */,
+    126 /* X509v3 Extended Key Usage */,
+    857 /* X509v3 Freshest CRL */,
+    748 /* X509v3 Inhibit Any Policy */,
+    86 /* X509v3 Issuer Alternative Name */,
+    770 /* X509v3 Issuing Distribution Point */,
+    83 /* X509v3 Key Usage */,
+    666 /* X509v3 Name Constraints */,
+    403 /* X509v3 No Revocation Available */,
+    401 /* X509v3 Policy Constraints */,
+    747 /* X509v3 Policy Mappings */,
+    84 /* X509v3 Private Key Usage Period */,
+    85 /* X509v3 Subject Alternative Name */,
+    769 /* X509v3 Subject Directory Attributes */,
+    82 /* X509v3 Subject Key Identifier */,
+    920 /* X9.42 DH */,
+    184 /* X9.57 */,
+    185 /* X9.57 CM ? */,
+    478 /* aRecord */,
+    289 /* aaControls */,
+    287 /* ac-auditEntity */,
+    397 /* ac-proxying */,
+    288 /* ac-targeting */,
+    446 /* account */,
+    364 /* ad dvcs */,
+    606 /* additional verification */,
+    419 /* aes-128-cbc */,
+    916 /* aes-128-cbc-hmac-sha1 */,
+    896 /* aes-128-ccm */,
+    421 /* aes-128-cfb */,
+    650 /* aes-128-cfb1 */,
+    653 /* aes-128-cfb8 */,
+    904 /* aes-128-ctr */,
+    418 /* aes-128-ecb */,
+    895 /* aes-128-gcm */,
+    420 /* aes-128-ofb */,
+    913 /* aes-128-xts */,
+    423 /* aes-192-cbc */,
+    917 /* aes-192-cbc-hmac-sha1 */,
+    899 /* aes-192-ccm */,
+    425 /* aes-192-cfb */,
+    651 /* aes-192-cfb1 */,
+    654 /* aes-192-cfb8 */,
+    905 /* aes-192-ctr */,
+    422 /* aes-192-ecb */,
+    898 /* aes-192-gcm */,
+    424 /* aes-192-ofb */,
+    427 /* aes-256-cbc */,
+    918 /* aes-256-cbc-hmac-sha1 */,
+    902 /* aes-256-ccm */,
+    429 /* aes-256-cfb */,
+    652 /* aes-256-cfb1 */,
+    655 /* aes-256-cfb8 */,
+    906 /* aes-256-ctr */,
+    426 /* aes-256-ecb */,
+    901 /* aes-256-gcm */,
+    428 /* aes-256-ofb */,
+    914 /* aes-256-xts */,
+    376 /* algorithm */,
+    484 /* associatedDomain */,
+    485 /* associatedName */,
+    501 /* audio */,
+    958 /* auth-any */,
+    955 /* auth-ecdsa */,
+    956 /* auth-psk */,
+    954 /* auth-rsa */,
+    882 /* authorityRevocationList */,
+    91 /* bf-cbc */,
+    93 /* bf-cfb */,
+    92 /* bf-ecb */,
+    94 /* bf-ofb */,
+    921 /* brainpoolP160r1 */,
+    922 /* brainpoolP160t1 */,
+    923 /* brainpoolP192r1 */,
+    924 /* brainpoolP192t1 */,
+    925 /* brainpoolP224r1 */,
+    926 /* brainpoolP224t1 */,
+    927 /* brainpoolP256r1 */,
+    928 /* brainpoolP256t1 */,
+    929 /* brainpoolP320r1 */,
+    930 /* brainpoolP320t1 */,
+    931 /* brainpoolP384r1 */,
+    932 /* brainpoolP384t1 */,
+    933 /* brainpoolP512r1 */,
+    934 /* brainpoolP512t1 */,
+    494 /* buildingName */,
+    860 /* businessCategory */,
+    691 /* c2onb191v4 */,
+    692 /* c2onb191v5 */,
+    697 /* c2onb239v4 */,
+    698 /* c2onb239v5 */,
+    684 /* c2pnb163v1 */,
+    685 /* c2pnb163v2 */,
+    686 /* c2pnb163v3 */,
+    687 /* c2pnb176v1 */,
+    693 /* c2pnb208w1 */,
+    699 /* c2pnb272w1 */,
+    700 /* c2pnb304w1 */,
+    702 /* c2pnb368w1 */,
+    688 /* c2tnb191v1 */,
+    689 /* c2tnb191v2 */,
+    690 /* c2tnb191v3 */,
+    694 /* c2tnb239v1 */,
+    695 /* c2tnb239v2 */,
+    696 /* c2tnb239v3 */,
+    701 /* c2tnb359v1 */,
+    703 /* c2tnb431r1 */,
+    881 /* cACertificate */,
+    483 /* cNAMERecord */,
+    751 /* camellia-128-cbc */,
+    757 /* camellia-128-cfb */,
+    760 /* camellia-128-cfb1 */,
+    763 /* camellia-128-cfb8 */,
+    754 /* camellia-128-ecb */,
+    766 /* camellia-128-ofb */,
+    752 /* camellia-192-cbc */,
+    758 /* camellia-192-cfb */,
+    761 /* camellia-192-cfb1 */,
+    764 /* camellia-192-cfb8 */,
+    755 /* camellia-192-ecb */,
+    767 /* camellia-192-ofb */,
+    753 /* camellia-256-cbc */,
+    759 /* camellia-256-cfb */,
+    762 /* camellia-256-cfb1 */,
+    765 /* camellia-256-cfb8 */,
+    756 /* camellia-256-ecb */,
+    768 /* camellia-256-ofb */,
+    443 /* caseIgnoreIA5StringSyntax */,
+    108 /* cast5-cbc */,
+    110 /* cast5-cfb */,
+    109 /* cast5-ecb */,
+    111 /* cast5-ofb */,
+    152 /* certBag */,
+    677 /* certicom-arc */,
+    517 /* certificate extensions */,
+    883 /* certificateRevocationList */,
+    950 /* chacha20-poly1305 */,
+    54 /* challengePassword */,
+    407 /* characteristic-two-field */,
+    395 /* clearance */,
+    633 /* cleartext track 2 */,
+    894 /* cmac */,
+    13 /* commonName */,
+    513 /* content types */,
+    50 /* contentType */,
+    53 /* countersignature */,
+    14 /* countryName */,
+    153 /* crlBag */,
+    884 /* crossCertificatePair */,
+    806 /* cryptocom */,
+    805 /* cryptopro */,
+    500 /* dITRedirect */,
+    451 /* dNSDomain */,
+    495 /* dSAQuality */,
+    434 /* data */,
+    390 /* dcObject */,
+    891 /* deltaRevocationList */,
+    31 /* des-cbc */,
+    643 /* des-cdmf */,
+    30 /* des-cfb */,
+    656 /* des-cfb1 */,
+    657 /* des-cfb8 */,
+    29 /* des-ecb */,
+    32 /* des-ede */,
+    43 /* des-ede-cbc */,
+    60 /* des-ede-cfb */,
+    62 /* des-ede-ofb */,
+    33 /* des-ede3 */,
+    44 /* des-ede3-cbc */,
+    61 /* des-ede3-cfb */,
+    658 /* des-ede3-cfb1 */,
+    659 /* des-ede3-cfb8 */,
+    63 /* des-ede3-ofb */,
+    45 /* des-ofb */,
+    107 /* description */,
+    871 /* destinationIndicator */,
+    80 /* desx-cbc */,
+    947 /* dh-cofactor-kdf */,
+    946 /* dh-std-kdf */,
+    28 /* dhKeyAgreement */,
+    941 /* dhSinglePass-cofactorDH-sha1kdf-scheme */,
+    942 /* dhSinglePass-cofactorDH-sha224kdf-scheme */,
+    943 /* dhSinglePass-cofactorDH-sha256kdf-scheme */,
+    944 /* dhSinglePass-cofactorDH-sha384kdf-scheme */,
+    945 /* dhSinglePass-cofactorDH-sha512kdf-scheme */,
+    936 /* dhSinglePass-stdDH-sha1kdf-scheme */,
+    937 /* dhSinglePass-stdDH-sha224kdf-scheme */,
+    938 /* dhSinglePass-stdDH-sha256kdf-scheme */,
+    939 /* dhSinglePass-stdDH-sha384kdf-scheme */,
+    940 /* dhSinglePass-stdDH-sha512kdf-scheme */,
+    11 /* directory services (X.500) */,
+    378 /* directory services - algorithms */,
+    887 /* distinguishedName */,
+    892 /* dmdName */,
+    174 /* dnQualifier */,
+    447 /* document */,
+    471 /* documentAuthor */,
+    468 /* documentIdentifier */,
+    472 /* documentLocation */,
+    502 /* documentPublisher */,
+    449 /* documentSeries */,
+    469 /* documentTitle */,
+    470 /* documentVersion */,
+    380 /* dod */,
+    391 /* domainComponent */,
+    452 /* domainRelatedObject */,
+    116 /* dsaEncryption */,
+    67 /* dsaEncryption-old */,
+    66 /* dsaWithSHA */,
+    113 /* dsaWithSHA1 */,
+    70 /* dsaWithSHA1-old */,
+    802 /* dsa_with_SHA224 */,
+    803 /* dsa_with_SHA256 */,
+    297 /* dvcs */,
+    791 /* ecdsa-with-Recommended */,
+    416 /* ecdsa-with-SHA1 */,
+    793 /* ecdsa-with-SHA224 */,
+    794 /* ecdsa-with-SHA256 */,
+    795 /* ecdsa-with-SHA384 */,
+    796 /* ecdsa-with-SHA512 */,
+    792 /* ecdsa-with-Specified */,
+    48 /* emailAddress */,
+    632 /* encrypted track 2 */,
+    885 /* enhancedSearchGuide */,
+    56 /* extendedCertificateAttributes */,
+    867 /* facsimileTelephoneNumber */,
+    462 /* favouriteDrink */,
+    453 /* friendlyCountry */,
+    490 /* friendlyCountryName */,
+    156 /* friendlyName */,
+    631 /* generate cryptogram */,
+    509 /* generationQualifier */,
+    601 /* generic cryptogram */,
+    99 /* givenName */,
+    814 /* gost89-cnt */,
+    855 /* hmac */,
+    780 /* hmac-md5 */,
+    781 /* hmac-sha1 */,
+    797 /* hmacWithMD5 */,
+    163 /* hmacWithSHA1 */,
+    798 /* hmacWithSHA224 */,
+    799 /* hmacWithSHA256 */,
+    800 /* hmacWithSHA384 */,
+    801 /* hmacWithSHA512 */,
+    486 /* homePostalAddress */,
+    473 /* homeTelephoneNumber */,
+    466 /* host */,
+    889 /* houseIdentifier */,
+    442 /* iA5StringSyntax */,
+    381 /* iana */,
+    824 /* id-Gost28147-89-CryptoPro-A-ParamSet */,
+    825 /* id-Gost28147-89-CryptoPro-B-ParamSet */,
+    826 /* id-Gost28147-89-CryptoPro-C-ParamSet */,
+    827 /* id-Gost28147-89-CryptoPro-D-ParamSet */,
+    819 /* id-Gost28147-89-CryptoPro-KeyMeshing */,
+    829 /* id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet */,
+    828 /* id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet */,
+    830 /* id-Gost28147-89-CryptoPro-RIC-1-ParamSet */,
+    820 /* id-Gost28147-89-None-KeyMeshing */,
+    823 /* id-Gost28147-89-TestParamSet */,
+    840 /* id-GostR3410-2001-CryptoPro-A-ParamSet */,
+    841 /* id-GostR3410-2001-CryptoPro-B-ParamSet */,
+    842 /* id-GostR3410-2001-CryptoPro-C-ParamSet */,
+    843 /* id-GostR3410-2001-CryptoPro-XchA-ParamSet */,
+    844 /* id-GostR3410-2001-CryptoPro-XchB-ParamSet */,
+    839 /* id-GostR3410-2001-TestParamSet */,
+    832 /* id-GostR3410-94-CryptoPro-A-ParamSet */,
+    833 /* id-GostR3410-94-CryptoPro-B-ParamSet */,
+    834 /* id-GostR3410-94-CryptoPro-C-ParamSet */,
+    835 /* id-GostR3410-94-CryptoPro-D-ParamSet */,
+    836 /* id-GostR3410-94-CryptoPro-XchA-ParamSet */,
+    837 /* id-GostR3410-94-CryptoPro-XchB-ParamSet */,
+    838 /* id-GostR3410-94-CryptoPro-XchC-ParamSet */,
+    831 /* id-GostR3410-94-TestParamSet */,
+    845 /* id-GostR3410-94-a */,
+    846 /* id-GostR3410-94-aBis */,
+    847 /* id-GostR3410-94-b */,
+    848 /* id-GostR3410-94-bBis */,
+    822 /* id-GostR3411-94-CryptoProParamSet */,
+    821 /* id-GostR3411-94-TestParamSet */,
+    266 /* id-aca */,
+    355 /* id-aca-accessIdentity */,
+    354 /* id-aca-authenticationInfo */,
+    356 /* id-aca-chargingIdentity */,
+    399 /* id-aca-encAttrs */,
+    357 /* id-aca-group */,
+    358 /* id-aca-role */,
+    176 /* id-ad */,
+    788 /* id-aes128-wrap */,
+    897 /* id-aes128-wrap-pad */,
+    789 /* id-aes192-wrap */,
+    900 /* id-aes192-wrap-pad */,
+    790 /* id-aes256-wrap */,
+    903 /* id-aes256-wrap-pad */,
+    262 /* id-alg */,
+    893 /* id-alg-PWRI-KEK */,
+    323 /* id-alg-des40 */,
+    326 /* id-alg-dh-pop */,
+    325 /* id-alg-dh-sig-hmac-sha1 */,
+    324 /* id-alg-noSignature */,
+    907 /* id-camellia128-wrap */,
+    908 /* id-camellia192-wrap */,
+    909 /* id-camellia256-wrap */,
+    268 /* id-cct */,
+    361 /* id-cct-PKIData */,
+    362 /* id-cct-PKIResponse */,
+    360 /* id-cct-crs */,
+    81 /* id-ce */,
+    680 /* id-characteristic-two-basis */,
+    263 /* id-cmc */,
+    334 /* id-cmc-addExtensions */,
+    346 /* id-cmc-confirmCertAcceptance */,
+    330 /* id-cmc-dataReturn */,
+    336 /* id-cmc-decryptedPOP */,
+    335 /* id-cmc-encryptedPOP */,
+    339 /* id-cmc-getCRL */,
+    338 /* id-cmc-getCert */,
+    328 /* id-cmc-identification */,
+    329 /* id-cmc-identityProof */,
+    337 /* id-cmc-lraPOPWitness */,
+    344 /* id-cmc-popLinkRandom */,
+    345 /* id-cmc-popLinkWitness */,
+    343 /* id-cmc-queryPending */,
+    333 /* id-cmc-recipientNonce */,
+    341 /* id-cmc-regInfo */,
+    342 /* id-cmc-responseInfo */,
+    340 /* id-cmc-revokeRequest */,
+    332 /* id-cmc-senderNonce */,
+    327 /* id-cmc-statusInfo */,
+    331 /* id-cmc-transactionId */,
+    787 /* id-ct-asciiTextWithCRLF */,
+    408 /* id-ecPublicKey */,
+    508 /* id-hex-multipart-message */,
+    507 /* id-hex-partial-message */,
+    260 /* id-it */,
+    302 /* id-it-caKeyUpdateInfo */,
+    298 /* id-it-caProtEncCert */,
+    311 /* id-it-confirmWaitTime */,
+    303 /* id-it-currentCRL */,
+    300 /* id-it-encKeyPairTypes */,
+    310 /* id-it-implicitConfirm */,
+    308 /* id-it-keyPairParamRep */,
+    307 /* id-it-keyPairParamReq */,
+    312 /* id-it-origPKIMessage */,
+    301 /* id-it-preferredSymmAlg */,
+    309 /* id-it-revPassphrase */,
+    299 /* id-it-signKeyPairTypes */,
+    305 /* id-it-subscriptionRequest */,
+    306 /* id-it-subscriptionResponse */,
+    784 /* id-it-suppLangTags */,
+    304 /* id-it-unsupportedOIDs */,
+    128 /* id-kp */,
+    280 /* id-mod-attribute-cert */,
+    274 /* id-mod-cmc */,
+    277 /* id-mod-cmp */,
+    284 /* id-mod-cmp2000 */,
+    273 /* id-mod-crmf */,
+    283 /* id-mod-dvcs */,
+    275 /* id-mod-kea-profile-88 */,
+    276 /* id-mod-kea-profile-93 */,
+    282 /* id-mod-ocsp */,
+    278 /* id-mod-qualified-cert-88 */,
+    279 /* id-mod-qualified-cert-93 */,
+    281 /* id-mod-timestamp-protocol */,
+    264 /* id-on */,
+    347 /* id-on-personalData */,
+    265 /* id-pda */,
+    352 /* id-pda-countryOfCitizenship */,
+    353 /* id-pda-countryOfResidence */,
+    348 /* id-pda-dateOfBirth */,
+    351 /* id-pda-gender */,
+    349 /* id-pda-placeOfBirth */,
+    175 /* id-pe */,
+    261 /* id-pkip */,
+    258 /* id-pkix-mod */,
+    269 /* id-pkix1-explicit-88 */,
+    271 /* id-pkix1-explicit-93 */,
+    270 /* id-pkix1-implicit-88 */,
+    272 /* id-pkix1-implicit-93 */,
+    662 /* id-ppl */,
+    267 /* id-qcs */,
+    359 /* id-qcs-pkixQCSyntax-v1 */,
+    259 /* id-qt */,
+    313 /* id-regCtrl */,
+    316 /* id-regCtrl-authenticator */,
+    319 /* id-regCtrl-oldCertID */,
+    318 /* id-regCtrl-pkiArchiveOptions */,
+    317 /* id-regCtrl-pkiPublicationInfo */,
+    320 /* id-regCtrl-protocolEncrKey */,
+    315 /* id-regCtrl-regToken */,
+    314 /* id-regInfo */,
+    322 /* id-regInfo-certReq */,
+    321 /* id-regInfo-utf8Pairs */,
+    191 /* id-smime-aa */,
+    215 /* id-smime-aa-contentHint */,
+    218 /* id-smime-aa-contentIdentifier */,
+    221 /* id-smime-aa-contentReference */,
+    240 /* id-smime-aa-dvcs-dvc */,
+    217 /* id-smime-aa-encapContentType */,
+    222 /* id-smime-aa-encrypKeyPref */,
+    220 /* id-smime-aa-equivalentLabels */,
+    232 /* id-smime-aa-ets-CertificateRefs */,
+    233 /* id-smime-aa-ets-RevocationRefs */,
+    238 /* id-smime-aa-ets-archiveTimeStamp */,
+    237 /* id-smime-aa-ets-certCRLTimestamp */,
+    234 /* id-smime-aa-ets-certValues */,
+    227 /* id-smime-aa-ets-commitmentType */,
+    231 /* id-smime-aa-ets-contentTimestamp */,
+    236 /* id-smime-aa-ets-escTimeStamp */,
+    230 /* id-smime-aa-ets-otherSigCert */,
+    235 /* id-smime-aa-ets-revocationValues */,
+    226 /* id-smime-aa-ets-sigPolicyId */,
+    229 /* id-smime-aa-ets-signerAttr */,
+    228 /* id-smime-aa-ets-signerLocation */,
+    219 /* id-smime-aa-macValue */,
+    214 /* id-smime-aa-mlExpandHistory */,
+    216 /* id-smime-aa-msgSigDigest */,
+    212 /* id-smime-aa-receiptRequest */,
+    213 /* id-smime-aa-securityLabel */,
+    239 /* id-smime-aa-signatureType */,
+    223 /* id-smime-aa-signingCertificate */,
+    224 /* id-smime-aa-smimeEncryptCerts */,
+    225 /* id-smime-aa-timeStampToken */,
+    192 /* id-smime-alg */,
+    243 /* id-smime-alg-3DESwrap */,
+    246 /* id-smime-alg-CMS3DESwrap */,
+    247 /* id-smime-alg-CMSRC2wrap */,
+    245 /* id-smime-alg-ESDH */,
+    241 /* id-smime-alg-ESDHwith3DES */,
+    242 /* id-smime-alg-ESDHwithRC2 */,
+    244 /* id-smime-alg-RC2wrap */,
+    193 /* id-smime-cd */,
+    248 /* id-smime-cd-ldap */,
+    190 /* id-smime-ct */,
+    210 /* id-smime-ct-DVCSRequestData */,
+    211 /* id-smime-ct-DVCSResponseData */,
+    208 /* id-smime-ct-TDTInfo */,
+    207 /* id-smime-ct-TSTInfo */,
+    205 /* id-smime-ct-authData */,
+    786 /* id-smime-ct-compressedData */,
+    209 /* id-smime-ct-contentInfo */,
+    206 /* id-smime-ct-publishCert */,
+    204 /* id-smime-ct-receipt */,
+    195 /* id-smime-cti */,
+    255 /* id-smime-cti-ets-proofOfApproval */,
+    256 /* id-smime-cti-ets-proofOfCreation */,
+    253 /* id-smime-cti-ets-proofOfDelivery */,
+    251 /* id-smime-cti-ets-proofOfOrigin */,
+    252 /* id-smime-cti-ets-proofOfReceipt */,
+    254 /* id-smime-cti-ets-proofOfSender */,
+    189 /* id-smime-mod */,
+    196 /* id-smime-mod-cms */,
+    197 /* id-smime-mod-ess */,
+    202 /* id-smime-mod-ets-eSigPolicy-88 */,
+    203 /* id-smime-mod-ets-eSigPolicy-97 */,
+    200 /* id-smime-mod-ets-eSignature-88 */,
+    201 /* id-smime-mod-ets-eSignature-97 */,
+    199 /* id-smime-mod-msg-v3 */,
+    198 /* id-smime-mod-oid */,
+    194 /* id-smime-spq */,
+    250 /* id-smime-spq-ets-sqt-unotice */,
+    249 /* id-smime-spq-ets-sqt-uri */,
+    34 /* idea-cbc */,
+    35 /* idea-cfb */,
+    36 /* idea-ecb */,
+    46 /* idea-ofb */,
+    676 /* identified-organization */,
+    461 /* info */,
+    101 /* initials */,
+    869 /* internationaliSDNNumber */,
+    749 /* ipsec3 */,
+    750 /* ipsec4 */,
+    181 /* iso */,
+    623 /* issuer capabilities */,
+    645 /* itu-t */,
+    492 /* janetMailbox */,
+    646 /* joint-iso-itu-t */,
+    150 /* keyBag */,
+    773 /* kisa */,
+    957 /* kx-any */,
+    952 /* kx-ecdhe */,
+    953 /* kx-psk */,
+    951 /* kx-rsa */,
+    477 /* lastModifiedBy */,
+    476 /* lastModifiedTime */,
+    157 /* localKeyID */,
+    15 /* localityName */,
+    480 /* mXRecord */,
+    493 /* mailPreferenceOption */,
+    467 /* manager */,
+    3 /* md2 */,
+    7 /* md2WithRSAEncryption */,
+    257 /* md4 */,
+    396 /* md4WithRSAEncryption */,
+    4 /* md5 */,
+    114 /* md5-sha1 */,
+    104 /* md5WithRSA */,
+    8 /* md5WithRSAEncryption */,
+    95 /* mdc2 */,
+    96 /* mdc2WithRSA */,
+    875 /* member */,
+    602 /* merchant initiated auth */,
+    514 /* message extensions */,
+    51 /* messageDigest */,
+    911 /* mgf1 */,
+    506 /* mime-mhs-bodies */,
+    505 /* mime-mhs-headings */,
+    488 /* mobileTelephoneNumber */,
+    481 /* nSRecord */,
+    173 /* name */,
+    681 /* onBasis */,
+    379 /* org */,
+    17 /* organizationName */,
+    491 /* organizationalStatus */,
+    18 /* organizationalUnitName */,
+    475 /* otherMailbox */,
+    876 /* owner */,
+    935 /* pSpecified */,
+    489 /* pagerTelephoneNumber */,
+    782 /* password based MAC */,
+    374 /* path */,
+    621 /* payment gateway capabilities */,
+    9 /* pbeWithMD2AndDES-CBC */,
+    168 /* pbeWithMD2AndRC2-CBC */,
+    112 /* pbeWithMD5AndCast5CBC */,
+    10 /* pbeWithMD5AndDES-CBC */,
+    169 /* pbeWithMD5AndRC2-CBC */,
+    148 /* pbeWithSHA1And128BitRC2-CBC */,
+    144 /* pbeWithSHA1And128BitRC4 */,
+    147 /* pbeWithSHA1And2-KeyTripleDES-CBC */,
+    146 /* pbeWithSHA1And3-KeyTripleDES-CBC */,
+    149 /* pbeWithSHA1And40BitRC2-CBC */,
+    145 /* pbeWithSHA1And40BitRC4 */,
+    170 /* pbeWithSHA1AndDES-CBC */,
+    68 /* pbeWithSHA1AndRC2-CBC */,
+    499 /* personalSignature */,
+    487 /* personalTitle */,
+    464 /* photo */,
+    863 /* physicalDeliveryOfficeName */,
+    437 /* pilot */,
+    439 /* pilotAttributeSyntax */,
+    438 /* pilotAttributeType */,
+    479 /* pilotAttributeType27 */,
+    456 /* pilotDSA */,
+    441 /* pilotGroups */,
+    444 /* pilotObject */,
+    440 /* pilotObjectClass */,
+    455 /* pilotOrganization */,
+    445 /* pilotPerson */,
+    186 /* pkcs1 */,
+    27 /* pkcs3 */,
+    187 /* pkcs5 */,
+    20 /* pkcs7 */,
+    21 /* pkcs7-data */,
+    25 /* pkcs7-digestData */,
+    26 /* pkcs7-encryptedData */,
+    23 /* pkcs7-envelopedData */,
+    24 /* pkcs7-signedAndEnvelopedData */,
+    22 /* pkcs7-signedData */,
+    151 /* pkcs8ShroudedKeyBag */,
+    47 /* pkcs9 */,
+    862 /* postOfficeBox */,
+    861 /* postalAddress */,
+    661 /* postalCode */,
+    683 /* ppBasis */,
+    872 /* preferredDeliveryMethod */,
+    873 /* presentationAddress */,
+    406 /* prime-field */,
+    409 /* prime192v1 */,
+    410 /* prime192v2 */,
+    411 /* prime192v3 */,
+    412 /* prime239v1 */,
+    413 /* prime239v2 */,
+    414 /* prime239v3 */,
+    415 /* prime256v1 */,
+    886 /* protocolInformation */,
+    510 /* pseudonym */,
+    435 /* pss */,
+    286 /* qcStatements */,
+    457 /* qualityLabelledData */,
+    450 /* rFC822localPart */,
+    98 /* rc2-40-cbc */,
+    166 /* rc2-64-cbc */,
+    37 /* rc2-cbc */,
+    39 /* rc2-cfb */,
+    38 /* rc2-ecb */,
+    40 /* rc2-ofb */,
+    5 /* rc4 */,
+    97 /* rc4-40 */,
+    915 /* rc4-hmac-md5 */,
+    120 /* rc5-cbc */,
+    122 /* rc5-cfb */,
+    121 /* rc5-ecb */,
+    123 /* rc5-ofb */,
+    870 /* registeredAddress */,
+    460 /* rfc822Mailbox */,
+    117 /* ripemd160 */,
+    119 /* ripemd160WithRSA */,
+    400 /* role */,
+    877 /* roleOccupant */,
+    448 /* room */,
+    463 /* roomNumber */,
+    19 /* rsa */,
+    6 /* rsaEncryption */,
+    644 /* rsaOAEPEncryptionSET */,
+    377 /* rsaSignature */,
+    919 /* rsaesOaep */,
+    912 /* rsassaPss */,
+    482 /* sOARecord */,
+    155 /* safeContentsBag */,
+    291 /* sbgp-autonomousSysNum */,
+    290 /* sbgp-ipAddrBlock */,
+    292 /* sbgp-routerIdentifier */,
+    159 /* sdsiCertificate */,
+    859 /* searchGuide */,
+    704 /* secp112r1 */,
+    705 /* secp112r2 */,
+    706 /* secp128r1 */,
+    707 /* secp128r2 */,
+    708 /* secp160k1 */,
+    709 /* secp160r1 */,
+    710 /* secp160r2 */,
+    711 /* secp192k1 */,
+    712 /* secp224k1 */,
+    713 /* secp224r1 */,
+    714 /* secp256k1 */,
+    715 /* secp384r1 */,
+    716 /* secp521r1 */,
+    154 /* secretBag */,
+    474 /* secretary */,
+    717 /* sect113r1 */,
+    718 /* sect113r2 */,
+    719 /* sect131r1 */,
+    720 /* sect131r2 */,
+    721 /* sect163k1 */,
+    722 /* sect163r1 */,
+    723 /* sect163r2 */,
+    724 /* sect193r1 */,
+    725 /* sect193r2 */,
+    726 /* sect233k1 */,
+    727 /* sect233r1 */,
+    728 /* sect239k1 */,
+    729 /* sect283k1 */,
+    730 /* sect283r1 */,
+    731 /* sect409k1 */,
+    732 /* sect409r1 */,
+    733 /* sect571k1 */,
+    734 /* sect571r1 */,
+    635 /* secure device signature */,
+    878 /* seeAlso */,
+    777 /* seed-cbc */,
+    779 /* seed-cfb */,
+    776 /* seed-ecb */,
+    778 /* seed-ofb */,
+    105 /* serialNumber */,
+    625 /* set-addPolicy */,
+    515 /* set-attr */,
+    518 /* set-brand */,
+    638 /* set-brand-AmericanExpress */,
+    637 /* set-brand-Diners */,
+    636 /* set-brand-IATA-ATA */,
+    639 /* set-brand-JCB */,
+    641 /* set-brand-MasterCard */,
+    642 /* set-brand-Novus */,
+    640 /* set-brand-Visa */,
+    516 /* set-policy */,
+    607 /* set-policy-root */,
+    624 /* set-rootKeyThumb */,
+    620 /* setAttr-Cert */,
+    628 /* setAttr-IssCap-CVM */,
+    630 /* setAttr-IssCap-Sig */,
+    629 /* setAttr-IssCap-T2 */,
+    627 /* setAttr-Token-B0Prime */,
+    626 /* setAttr-Token-EMV */,
+    622 /* setAttr-TokenType */,
+    619 /* setCext-IssuerCapabilities */,
+    615 /* setCext-PGWYcapabilities */,
+    616 /* setCext-TokenIdentifier */,
+    618 /* setCext-TokenType */,
+    617 /* setCext-Track2Data */,
+    611 /* setCext-cCertRequired */,
+    609 /* setCext-certType */,
+    608 /* setCext-hashedRoot */,
+    610 /* setCext-merchData */,
+    613 /* setCext-setExt */,
+    614 /* setCext-setQualf */,
+    612 /* setCext-tunneling */,
+    540 /* setct-AcqCardCodeMsg */,
+    576 /* setct-AcqCardCodeMsgTBE */,
+    570 /* setct-AuthReqTBE */,
+    534 /* setct-AuthReqTBS */,
+    527 /* setct-AuthResBaggage */,
+    571 /* setct-AuthResTBE */,
+    572 /* setct-AuthResTBEX */,
+    535 /* setct-AuthResTBS */,
+    536 /* setct-AuthResTBSX */,
+    528 /* setct-AuthRevReqBaggage */,
+    577 /* setct-AuthRevReqTBE */,
+    541 /* setct-AuthRevReqTBS */,
+    529 /* setct-AuthRevResBaggage */,
+    542 /* setct-AuthRevResData */,
+    578 /* setct-AuthRevResTBE */,
+    579 /* setct-AuthRevResTBEB */,
+    543 /* setct-AuthRevResTBS */,
+    573 /* setct-AuthTokenTBE */,
+    537 /* setct-AuthTokenTBS */,
+    600 /* setct-BCIDistributionTBS */,
+    558 /* setct-BatchAdminReqData */,
+    592 /* setct-BatchAdminReqTBE */,
+    559 /* setct-BatchAdminResData */,
+    593 /* setct-BatchAdminResTBE */,
+    599 /* setct-CRLNotificationResTBS */,
+    598 /* setct-CRLNotificationTBS */,
+    580 /* setct-CapReqTBE */,
+    581 /* setct-CapReqTBEX */,
+    544 /* setct-CapReqTBS */,
+    545 /* setct-CapReqTBSX */,
+    546 /* setct-CapResData */,
+    582 /* setct-CapResTBE */,
+    583 /* setct-CapRevReqTBE */,
+    584 /* setct-CapRevReqTBEX */,
+    547 /* setct-CapRevReqTBS */,
+    548 /* setct-CapRevReqTBSX */,
+    549 /* setct-CapRevResData */,
+    585 /* setct-CapRevResTBE */,
+    538 /* setct-CapTokenData */,
+    530 /* setct-CapTokenSeq */,
+    574 /* setct-CapTokenTBE */,
+    575 /* setct-CapTokenTBEX */,
+    539 /* setct-CapTokenTBS */,
+    560 /* setct-CardCInitResTBS */,
+    566 /* setct-CertInqReqTBS */,
+    563 /* setct-CertReqData */,
+    595 /* setct-CertReqTBE */,
+    596 /* setct-CertReqTBEX */,
+    564 /* setct-CertReqTBS */,
+    565 /* setct-CertResData */,
+    597 /* setct-CertResTBE */,
+    586 /* setct-CredReqTBE */,
+    587 /* setct-CredReqTBEX */,
+    550 /* setct-CredReqTBS */,
+    551 /* setct-CredReqTBSX */,
+    552 /* setct-CredResData */,
+    588 /* setct-CredResTBE */,
+    589 /* setct-CredRevReqTBE */,
+    590 /* setct-CredRevReqTBEX */,
+    553 /* setct-CredRevReqTBS */,
+    554 /* setct-CredRevReqTBSX */,
+    555 /* setct-CredRevResData */,
+    591 /* setct-CredRevResTBE */,
+    567 /* setct-ErrorTBS */,
+    526 /* setct-HODInput */,
+    561 /* setct-MeAqCInitResTBS */,
+    522 /* setct-OIData */,
+    519 /* setct-PANData */,
+    521 /* setct-PANOnly */,
+    520 /* setct-PANToken */,
+    556 /* setct-PCertReqData */,
+    557 /* setct-PCertResTBS */,
+    523 /* setct-PI */,
+    532 /* setct-PI-TBS */,
+    524 /* setct-PIData */,
+    525 /* setct-PIDataUnsigned */,
+    568 /* setct-PIDualSignedTBE */,
+    569 /* setct-PIUnsignedTBE */,
+    531 /* setct-PInitResData */,
+    533 /* setct-PResData */,
+    594 /* setct-RegFormReqTBE */,
+    562 /* setct-RegFormResTBS */,
+    604 /* setext-pinAny */,
+    603 /* setext-pinSecure */,
+    605 /* setext-track2 */,
+    41 /* sha */,
+    64 /* sha1 */,
+    115 /* sha1WithRSA */,
+    65 /* sha1WithRSAEncryption */,
+    675 /* sha224 */,
+    671 /* sha224WithRSAEncryption */,
+    672 /* sha256 */,
+    668 /* sha256WithRSAEncryption */,
+    673 /* sha384 */,
+    669 /* sha384WithRSAEncryption */,
+    674 /* sha512 */,
+    670 /* sha512WithRSAEncryption */,
+    42 /* shaWithRSAEncryption */,
+    52 /* signingTime */,
+    454 /* simpleSecurityObject */,
+    496 /* singleLevelQuality */,
+    16 /* stateOrProvinceName */,
+    660 /* streetAddress */,
+    498 /* subtreeMaximumQuality */,
+    497 /* subtreeMinimumQuality */,
+    890 /* supportedAlgorithms */,
+    874 /* supportedApplicationContext */,
+    100 /* surname */,
+    864 /* telephoneNumber */,
+    866 /* teletexTerminalIdentifier */,
+    865 /* telexNumber */,
+    459 /* textEncodedORAddress */,
+    293 /* textNotice */,
+    106 /* title */,
+    682 /* tpBasis */,
+    436 /* ucl */,
+    0 /* undefined */,
+    888 /* uniqueMember */,
+    55 /* unstructuredAddress */,
+    49 /* unstructuredName */,
+    880 /* userCertificate */,
+    465 /* userClass */,
+    458 /* userId */,
+    879 /* userPassword */,
+    373 /* valid */,
+    678 /* wap */,
+    679 /* wap-wsg */,
+    735 /* wap-wsg-idm-ecid-wtls1 */,
+    743 /* wap-wsg-idm-ecid-wtls10 */,
+    744 /* wap-wsg-idm-ecid-wtls11 */,
+    745 /* wap-wsg-idm-ecid-wtls12 */,
+    736 /* wap-wsg-idm-ecid-wtls3 */,
+    737 /* wap-wsg-idm-ecid-wtls4 */,
+    738 /* wap-wsg-idm-ecid-wtls5 */,
+    739 /* wap-wsg-idm-ecid-wtls6 */,
+    740 /* wap-wsg-idm-ecid-wtls7 */,
+    741 /* wap-wsg-idm-ecid-wtls8 */,
+    742 /* wap-wsg-idm-ecid-wtls9 */,
+    804 /* whirlpool */,
+    868 /* x121Address */,
+    503 /* x500UniqueIdentifier */,
+    158 /* x509Certificate */,
+    160 /* x509Crl */,
+    125 /* zlib compression */,
+};
+
+static const uint16_t kNIDsInOIDOrder[] = {
+    434 /* 0.9 (OBJ_data) */,
+    182 /* 1.2 (OBJ_member_body) */,
+    379 /* 1.3 (OBJ_org) */,
+    676 /* 1.3 (OBJ_identified_organization) */,
+    11 /* 2.5 (OBJ_X500) */,
+    647 /* 2.23 (OBJ_international_organizations) */,
+    380 /* 1.3.6 (OBJ_dod) */,
+    12 /* 2.5.4 (OBJ_X509) */,
+    378 /* 2.5.8 (OBJ_X500algorithms) */,
+    81 /* 2.5.29 (OBJ_id_ce) */,
+    512 /* 2.23.42 (OBJ_id_set) */,
+    678 /* 2.23.43 (OBJ_wap) */,
+    435 /* 0.9.2342 (OBJ_pss) */,
+    183 /* 1.2.840 (OBJ_ISO_US) */,
+    381 /* 1.3.6.1 (OBJ_iana) */,
+    948 /* 1.3.101.110 (OBJ_X25519) */,
+    961 /* 1.3.101.111 (OBJ_X448) */,
+    949 /* 1.3.101.112 (OBJ_ED25519) */,
+    960 /* 1.3.101.113 (OBJ_ED448) */,
+    677 /* 1.3.132 (OBJ_certicom_arc) */,
+    394 /* 2.5.1.5 (OBJ_selected_attribute_types) */,
+    13 /* 2.5.4.3 (OBJ_commonName) */,
+    100 /* 2.5.4.4 (OBJ_surname) */,
+    105 /* 2.5.4.5 (OBJ_serialNumber) */,
+    14 /* 2.5.4.6 (OBJ_countryName) */,
+    15 /* 2.5.4.7 (OBJ_localityName) */,
+    16 /* 2.5.4.8 (OBJ_stateOrProvinceName) */,
+    660 /* 2.5.4.9 (OBJ_streetAddress) */,
+    17 /* 2.5.4.10 (OBJ_organizationName) */,
+    18 /* 2.5.4.11 (OBJ_organizationalUnitName) */,
+    106 /* 2.5.4.12 (OBJ_title) */,
+    107 /* 2.5.4.13 (OBJ_description) */,
+    859 /* 2.5.4.14 (OBJ_searchGuide) */,
+    860 /* 2.5.4.15 (OBJ_businessCategory) */,
+    861 /* 2.5.4.16 (OBJ_postalAddress) */,
+    661 /* 2.5.4.17 (OBJ_postalCode) */,
+    862 /* 2.5.4.18 (OBJ_postOfficeBox) */,
+    863 /* 2.5.4.19 (OBJ_physicalDeliveryOfficeName) */,
+    864 /* 2.5.4.20 (OBJ_telephoneNumber) */,
+    865 /* 2.5.4.21 (OBJ_telexNumber) */,
+    866 /* 2.5.4.22 (OBJ_teletexTerminalIdentifier) */,
+    867 /* 2.5.4.23 (OBJ_facsimileTelephoneNumber) */,
+    868 /* 2.5.4.24 (OBJ_x121Address) */,
+    869 /* 2.5.4.25 (OBJ_internationaliSDNNumber) */,
+    870 /* 2.5.4.26 (OBJ_registeredAddress) */,
+    871 /* 2.5.4.27 (OBJ_destinationIndicator) */,
+    872 /* 2.5.4.28 (OBJ_preferredDeliveryMethod) */,
+    873 /* 2.5.4.29 (OBJ_presentationAddress) */,
+    874 /* 2.5.4.30 (OBJ_supportedApplicationContext) */,
+    875 /* 2.5.4.31 (OBJ_member) */,
+    876 /* 2.5.4.32 (OBJ_owner) */,
+    877 /* 2.5.4.33 (OBJ_roleOccupant) */,
+    878 /* 2.5.4.34 (OBJ_seeAlso) */,
+    879 /* 2.5.4.35 (OBJ_userPassword) */,
+    880 /* 2.5.4.36 (OBJ_userCertificate) */,
+    881 /* 2.5.4.37 (OBJ_cACertificate) */,
+    882 /* 2.5.4.38 (OBJ_authorityRevocationList) */,
+    883 /* 2.5.4.39 (OBJ_certificateRevocationList) */,
+    884 /* 2.5.4.40 (OBJ_crossCertificatePair) */,
+    173 /* 2.5.4.41 (OBJ_name) */,
+    99 /* 2.5.4.42 (OBJ_givenName) */,
+    101 /* 2.5.4.43 (OBJ_initials) */,
+    509 /* 2.5.4.44 (OBJ_generationQualifier) */,
+    503 /* 2.5.4.45 (OBJ_x500UniqueIdentifier) */,
+    174 /* 2.5.4.46 (OBJ_dnQualifier) */,
+    885 /* 2.5.4.47 (OBJ_enhancedSearchGuide) */,
+    886 /* 2.5.4.48 (OBJ_protocolInformation) */,
+    887 /* 2.5.4.49 (OBJ_distinguishedName) */,
+    888 /* 2.5.4.50 (OBJ_uniqueMember) */,
+    889 /* 2.5.4.51 (OBJ_houseIdentifier) */,
+    890 /* 2.5.4.52 (OBJ_supportedAlgorithms) */,
+    891 /* 2.5.4.53 (OBJ_deltaRevocationList) */,
+    892 /* 2.5.4.54 (OBJ_dmdName) */,
+    510 /* 2.5.4.65 (OBJ_pseudonym) */,
+    400 /* 2.5.4.72 (OBJ_role) */,
+    769 /* 2.5.29.9 (OBJ_subject_directory_attributes) */,
+    82 /* 2.5.29.14 (OBJ_subject_key_identifier) */,
+    83 /* 2.5.29.15 (OBJ_key_usage) */,
+    84 /* 2.5.29.16 (OBJ_private_key_usage_period) */,
+    85 /* 2.5.29.17 (OBJ_subject_alt_name) */,
+    86 /* 2.5.29.18 (OBJ_issuer_alt_name) */,
+    87 /* 2.5.29.19 (OBJ_basic_constraints) */,
+    88 /* 2.5.29.20 (OBJ_crl_number) */,
+    141 /* 2.5.29.21 (OBJ_crl_reason) */,
+    430 /* 2.5.29.23 (OBJ_hold_instruction_code) */,
+    142 /* 2.5.29.24 (OBJ_invalidity_date) */,
+    140 /* 2.5.29.27 (OBJ_delta_crl) */,
+    770 /* 2.5.29.28 (OBJ_issuing_distribution_point) */,
+    771 /* 2.5.29.29 (OBJ_certificate_issuer) */,
+    666 /* 2.5.29.30 (OBJ_name_constraints) */,
+    103 /* 2.5.29.31 (OBJ_crl_distribution_points) */,
+    89 /* 2.5.29.32 (OBJ_certificate_policies) */,
+    747 /* 2.5.29.33 (OBJ_policy_mappings) */,
+    90 /* 2.5.29.35 (OBJ_authority_key_identifier) */,
+    401 /* 2.5.29.36 (OBJ_policy_constraints) */,
+    126 /* 2.5.29.37 (OBJ_ext_key_usage) */,
+    857 /* 2.5.29.46 (OBJ_freshest_crl) */,
+    748 /* 2.5.29.54 (OBJ_inhibit_any_policy) */,
+    402 /* 2.5.29.55 (OBJ_target_information) */,
+    403 /* 2.5.29.56 (OBJ_no_rev_avail) */,
+    513 /* 2.23.42.0 (OBJ_set_ctype) */,
+    514 /* 2.23.42.1 (OBJ_set_msgExt) */,
+    515 /* 2.23.42.3 (OBJ_set_attr) */,
+    516 /* 2.23.42.5 (OBJ_set_policy) */,
+    517 /* 2.23.42.7 (OBJ_set_certExt) */,
+    518 /* 2.23.42.8 (OBJ_set_brand) */,
+    679 /* 2.23.43.1 (OBJ_wap_wsg) */,
+    382 /* 1.3.6.1.1 (OBJ_Directory) */,
+    383 /* 1.3.6.1.2 (OBJ_Management) */,
+    384 /* 1.3.6.1.3 (OBJ_Experimental) */,
+    385 /* 1.3.6.1.4 (OBJ_Private) */,
+    386 /* 1.3.6.1.5 (OBJ_Security) */,
+    387 /* 1.3.6.1.6 (OBJ_SNMPv2) */,
+    388 /* 1.3.6.1.7 (OBJ_Mail) */,
+    376 /* 1.3.14.3.2 (OBJ_algorithm) */,
+    395 /* 2.5.1.5.55 (OBJ_clearance) */,
+    19 /* 2.5.8.1.1 (OBJ_rsa) */,
+    96 /* 2.5.8.3.100 (OBJ_mdc2WithRSA) */,
+    95 /* 2.5.8.3.101 (OBJ_mdc2) */,
+    746 /* 2.5.29.32.0 (OBJ_any_policy) */,
+    910 /* 2.5.29.37.0 (OBJ_anyExtendedKeyUsage) */,
+    519 /* 2.23.42.0.0 (OBJ_setct_PANData) */,
+    520 /* 2.23.42.0.1 (OBJ_setct_PANToken) */,
+    521 /* 2.23.42.0.2 (OBJ_setct_PANOnly) */,
+    522 /* 2.23.42.0.3 (OBJ_setct_OIData) */,
+    523 /* 2.23.42.0.4 (OBJ_setct_PI) */,
+    524 /* 2.23.42.0.5 (OBJ_setct_PIData) */,
+    525 /* 2.23.42.0.6 (OBJ_setct_PIDataUnsigned) */,
+    526 /* 2.23.42.0.7 (OBJ_setct_HODInput) */,
+    527 /* 2.23.42.0.8 (OBJ_setct_AuthResBaggage) */,
+    528 /* 2.23.42.0.9 (OBJ_setct_AuthRevReqBaggage) */,
+    529 /* 2.23.42.0.10 (OBJ_setct_AuthRevResBaggage) */,
+    530 /* 2.23.42.0.11 (OBJ_setct_CapTokenSeq) */,
+    531 /* 2.23.42.0.12 (OBJ_setct_PInitResData) */,
+    532 /* 2.23.42.0.13 (OBJ_setct_PI_TBS) */,
+    533 /* 2.23.42.0.14 (OBJ_setct_PResData) */,
+    534 /* 2.23.42.0.16 (OBJ_setct_AuthReqTBS) */,
+    535 /* 2.23.42.0.17 (OBJ_setct_AuthResTBS) */,
+    536 /* 2.23.42.0.18 (OBJ_setct_AuthResTBSX) */,
+    537 /* 2.23.42.0.19 (OBJ_setct_AuthTokenTBS) */,
+    538 /* 2.23.42.0.20 (OBJ_setct_CapTokenData) */,
+    539 /* 2.23.42.0.21 (OBJ_setct_CapTokenTBS) */,
+    540 /* 2.23.42.0.22 (OBJ_setct_AcqCardCodeMsg) */,
+    541 /* 2.23.42.0.23 (OBJ_setct_AuthRevReqTBS) */,
+    542 /* 2.23.42.0.24 (OBJ_setct_AuthRevResData) */,
+    543 /* 2.23.42.0.25 (OBJ_setct_AuthRevResTBS) */,
+    544 /* 2.23.42.0.26 (OBJ_setct_CapReqTBS) */,
+    545 /* 2.23.42.0.27 (OBJ_setct_CapReqTBSX) */,
+    546 /* 2.23.42.0.28 (OBJ_setct_CapResData) */,
+    547 /* 2.23.42.0.29 (OBJ_setct_CapRevReqTBS) */,
+    548 /* 2.23.42.0.30 (OBJ_setct_CapRevReqTBSX) */,
+    549 /* 2.23.42.0.31 (OBJ_setct_CapRevResData) */,
+    550 /* 2.23.42.0.32 (OBJ_setct_CredReqTBS) */,
+    551 /* 2.23.42.0.33 (OBJ_setct_CredReqTBSX) */,
+    552 /* 2.23.42.0.34 (OBJ_setct_CredResData) */,
+    553 /* 2.23.42.0.35 (OBJ_setct_CredRevReqTBS) */,
+    554 /* 2.23.42.0.36 (OBJ_setct_CredRevReqTBSX) */,
+    555 /* 2.23.42.0.37 (OBJ_setct_CredRevResData) */,
+    556 /* 2.23.42.0.38 (OBJ_setct_PCertReqData) */,
+    557 /* 2.23.42.0.39 (OBJ_setct_PCertResTBS) */,
+    558 /* 2.23.42.0.40 (OBJ_setct_BatchAdminReqData) */,
+    559 /* 2.23.42.0.41 (OBJ_setct_BatchAdminResData) */,
+    560 /* 2.23.42.0.42 (OBJ_setct_CardCInitResTBS) */,
+    561 /* 2.23.42.0.43 (OBJ_setct_MeAqCInitResTBS) */,
+    562 /* 2.23.42.0.44 (OBJ_setct_RegFormResTBS) */,
+    563 /* 2.23.42.0.45 (OBJ_setct_CertReqData) */,
+    564 /* 2.23.42.0.46 (OBJ_setct_CertReqTBS) */,
+    565 /* 2.23.42.0.47 (OBJ_setct_CertResData) */,
+    566 /* 2.23.42.0.48 (OBJ_setct_CertInqReqTBS) */,
+    567 /* 2.23.42.0.49 (OBJ_setct_ErrorTBS) */,
+    568 /* 2.23.42.0.50 (OBJ_setct_PIDualSignedTBE) */,
+    569 /* 2.23.42.0.51 (OBJ_setct_PIUnsignedTBE) */,
+    570 /* 2.23.42.0.52 (OBJ_setct_AuthReqTBE) */,
+    571 /* 2.23.42.0.53 (OBJ_setct_AuthResTBE) */,
+    572 /* 2.23.42.0.54 (OBJ_setct_AuthResTBEX) */,
+    573 /* 2.23.42.0.55 (OBJ_setct_AuthTokenTBE) */,
+    574 /* 2.23.42.0.56 (OBJ_setct_CapTokenTBE) */,
+    575 /* 2.23.42.0.57 (OBJ_setct_CapTokenTBEX) */,
+    576 /* 2.23.42.0.58 (OBJ_setct_AcqCardCodeMsgTBE) */,
+    577 /* 2.23.42.0.59 (OBJ_setct_AuthRevReqTBE) */,
+    578 /* 2.23.42.0.60 (OBJ_setct_AuthRevResTBE) */,
+    579 /* 2.23.42.0.61 (OBJ_setct_AuthRevResTBEB) */,
+    580 /* 2.23.42.0.62 (OBJ_setct_CapReqTBE) */,
+    581 /* 2.23.42.0.63 (OBJ_setct_CapReqTBEX) */,
+    582 /* 2.23.42.0.64 (OBJ_setct_CapResTBE) */,
+    583 /* 2.23.42.0.65 (OBJ_setct_CapRevReqTBE) */,
+    584 /* 2.23.42.0.66 (OBJ_setct_CapRevReqTBEX) */,
+    585 /* 2.23.42.0.67 (OBJ_setct_CapRevResTBE) */,
+    586 /* 2.23.42.0.68 (OBJ_setct_CredReqTBE) */,
+    587 /* 2.23.42.0.69 (OBJ_setct_CredReqTBEX) */,
+    588 /* 2.23.42.0.70 (OBJ_setct_CredResTBE) */,
+    589 /* 2.23.42.0.71 (OBJ_setct_CredRevReqTBE) */,
+    590 /* 2.23.42.0.72 (OBJ_setct_CredRevReqTBEX) */,
+    591 /* 2.23.42.0.73 (OBJ_setct_CredRevResTBE) */,
+    592 /* 2.23.42.0.74 (OBJ_setct_BatchAdminReqTBE) */,
+    593 /* 2.23.42.0.75 (OBJ_setct_BatchAdminResTBE) */,
+    594 /* 2.23.42.0.76 (OBJ_setct_RegFormReqTBE) */,
+    595 /* 2.23.42.0.77 (OBJ_setct_CertReqTBE) */,
+    596 /* 2.23.42.0.78 (OBJ_setct_CertReqTBEX) */,
+    597 /* 2.23.42.0.79 (OBJ_setct_CertResTBE) */,
+    598 /* 2.23.42.0.80 (OBJ_setct_CRLNotificationTBS) */,
+    599 /* 2.23.42.0.81 (OBJ_setct_CRLNotificationResTBS) */,
+    600 /* 2.23.42.0.82 (OBJ_setct_BCIDistributionTBS) */,
+    601 /* 2.23.42.1.1 (OBJ_setext_genCrypt) */,
+    602 /* 2.23.42.1.3 (OBJ_setext_miAuth) */,
+    603 /* 2.23.42.1.4 (OBJ_setext_pinSecure) */,
+    604 /* 2.23.42.1.5 (OBJ_setext_pinAny) */,
+    605 /* 2.23.42.1.7 (OBJ_setext_track2) */,
+    606 /* 2.23.42.1.8 (OBJ_setext_cv) */,
+    620 /* 2.23.42.3.0 (OBJ_setAttr_Cert) */,
+    621 /* 2.23.42.3.1 (OBJ_setAttr_PGWYcap) */,
+    622 /* 2.23.42.3.2 (OBJ_setAttr_TokenType) */,
+    623 /* 2.23.42.3.3 (OBJ_setAttr_IssCap) */,
+    607 /* 2.23.42.5.0 (OBJ_set_policy_root) */,
+    608 /* 2.23.42.7.0 (OBJ_setCext_hashedRoot) */,
+    609 /* 2.23.42.7.1 (OBJ_setCext_certType) */,
+    610 /* 2.23.42.7.2 (OBJ_setCext_merchData) */,
+    611 /* 2.23.42.7.3 (OBJ_setCext_cCertRequired) */,
+    612 /* 2.23.42.7.4 (OBJ_setCext_tunneling) */,
+    613 /* 2.23.42.7.5 (OBJ_setCext_setExt) */,
+    614 /* 2.23.42.7.6 (OBJ_setCext_setQualf) */,
+    615 /* 2.23.42.7.7 (OBJ_setCext_PGWYcapabilities) */,
+    616 /* 2.23.42.7.8 (OBJ_setCext_TokenIdentifier) */,
+    617 /* 2.23.42.7.9 (OBJ_setCext_Track2Data) */,
+    618 /* 2.23.42.7.10 (OBJ_setCext_TokenType) */,
+    619 /* 2.23.42.7.11 (OBJ_setCext_IssuerCapabilities) */,
+    636 /* 2.23.42.8.1 (OBJ_set_brand_IATA_ATA) */,
+    640 /* 2.23.42.8.4 (OBJ_set_brand_Visa) */,
+    641 /* 2.23.42.8.5 (OBJ_set_brand_MasterCard) */,
+    637 /* 2.23.42.8.30 (OBJ_set_brand_Diners) */,
+    638 /* 2.23.42.8.34 (OBJ_set_brand_AmericanExpress) */,
+    639 /* 2.23.42.8.35 (OBJ_set_brand_JCB) */,
+    805 /* 1.2.643.2.2 (OBJ_cryptopro) */,
+    806 /* 1.2.643.2.9 (OBJ_cryptocom) */,
+    184 /* 1.2.840.10040 (OBJ_X9_57) */,
+    405 /* 1.2.840.10045 (OBJ_ansi_X9_62) */,
+    389 /* 1.3.6.1.4.1 (OBJ_Enterprises) */,
+    504 /* 1.3.6.1.7.1 (OBJ_mime_mhs) */,
+    104 /* 1.3.14.3.2.3 (OBJ_md5WithRSA) */,
+    29 /* 1.3.14.3.2.6 (OBJ_des_ecb) */,
+    31 /* 1.3.14.3.2.7 (OBJ_des_cbc) */,
+    45 /* 1.3.14.3.2.8 (OBJ_des_ofb64) */,
+    30 /* 1.3.14.3.2.9 (OBJ_des_cfb64) */,
+    377 /* 1.3.14.3.2.11 (OBJ_rsaSignature) */,
+    67 /* 1.3.14.3.2.12 (OBJ_dsa_2) */,
+    66 /* 1.3.14.3.2.13 (OBJ_dsaWithSHA) */,
+    42 /* 1.3.14.3.2.15 (OBJ_shaWithRSAEncryption) */,
+    32 /* 1.3.14.3.2.17 (OBJ_des_ede_ecb) */,
+    41 /* 1.3.14.3.2.18 (OBJ_sha) */,
+    64 /* 1.3.14.3.2.26 (OBJ_sha1) */,
+    70 /* 1.3.14.3.2.27 (OBJ_dsaWithSHA1_2) */,
+    115 /* 1.3.14.3.2.29 (OBJ_sha1WithRSA) */,
+    117 /* 1.3.36.3.2.1 (OBJ_ripemd160) */,
+    143 /* 1.3.101.1.4.1 (OBJ_sxnet) */,
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+         */
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+         */
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+    357 /* 1.3.6.1.5.5.7.10.4 (OBJ_id_aca_group) */,
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+    783 /* 1.2.840.113533.7.66.30 (OBJ_id_DHBasedMac) */,
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+    8 /* 1.2.840.113549.1.1.4 (OBJ_md5WithRSAEncryption) */,
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+    919 /* 1.2.840.113549.1.1.7 (OBJ_rsaesOaep) */,
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+    671 /* 1.2.840.113549.1.1.14 (OBJ_sha224WithRSAEncryption) */,
+    28 /* 1.2.840.113549.1.3.1 (OBJ_dhKeyAgreement) */,
+    9 /* 1.2.840.113549.1.5.1 (OBJ_pbeWithMD2AndDES_CBC) */,
+    10 /* 1.2.840.113549.1.5.3 (OBJ_pbeWithMD5AndDES_CBC) */,
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+    169 /* 1.2.840.113549.1.5.6 (OBJ_pbeWithMD5AndRC2_CBC) */,
+    170 /* 1.2.840.113549.1.5.10 (OBJ_pbeWithSHA1AndDES_CBC) */,
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+    22 /* 1.2.840.113549.1.7.2 (OBJ_pkcs7_signed) */,
+    23 /* 1.2.840.113549.1.7.3 (OBJ_pkcs7_enveloped) */,
+    24 /* 1.2.840.113549.1.7.4 (OBJ_pkcs7_signedAndEnveloped) */,
+    25 /* 1.2.840.113549.1.7.5 (OBJ_pkcs7_digest) */,
+    26 /* 1.2.840.113549.1.7.6 (OBJ_pkcs7_encrypted) */,
+    48 /* 1.2.840.113549.1.9.1 (OBJ_pkcs9_emailAddress) */,
+    49 /* 1.2.840.113549.1.9.2 (OBJ_pkcs9_unstructuredName) */,
+    50 /* 1.2.840.113549.1.9.3 (OBJ_pkcs9_contentType) */,
+    51 /* 1.2.840.113549.1.9.4 (OBJ_pkcs9_messageDigest) */,
+    52 /* 1.2.840.113549.1.9.5 (OBJ_pkcs9_signingTime) */,
+    53 /* 1.2.840.113549.1.9.6 (OBJ_pkcs9_countersignature) */,
+    54 /* 1.2.840.113549.1.9.7 (OBJ_pkcs9_challengePassword) */,
+    55 /* 1.2.840.113549.1.9.8 (OBJ_pkcs9_unstructuredAddress) */,
+    56 /* 1.2.840.113549.1.9.9 (OBJ_pkcs9_extCertAttributes) */,
+    172 /* 1.2.840.113549.1.9.14 (OBJ_ext_req) */,
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+    188 /* 1.2.840.113549.1.9.16 (OBJ_SMIME) */,
+    156 /* 1.2.840.113549.1.9.20 (OBJ_friendlyName) */,
+    157 /* 1.2.840.113549.1.9.21 (OBJ_localKeyID) */,
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+    683 /* 1.2.840.10045.1.2.3.3 (OBJ_X9_62_ppBasis) */,
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+    317 /* 1.3.6.1.5.5.7.5.1.3 (OBJ_id_regCtrl_pkiPublicationInfo) */,
+    318 /* 1.3.6.1.5.5.7.5.1.4 (OBJ_id_regCtrl_pkiArchiveOptions) */,
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+    365 /* 1.3.6.1.5.5.7.48.1.1 (OBJ_id_pkix_OCSP_basic) */,
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+    367 /* 1.3.6.1.5.5.7.48.1.3 (OBJ_id_pkix_OCSP_CrlID) */,
+    368 /* 1.3.6.1.5.5.7.48.1.4 (OBJ_id_pkix_OCSP_acceptableResponses) */,
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+    370 /* 1.3.6.1.5.5.7.48.1.6 (OBJ_id_pkix_OCSP_archiveCutoff) */,
+    371 /* 1.3.6.1.5.5.7.48.1.7 (OBJ_id_pkix_OCSP_serviceLocator) */,
+    372 /* 1.3.6.1.5.5.7.48.1.8 (OBJ_id_pkix_OCSP_extendedStatus) */,
+    373 /* 1.3.6.1.5.5.7.48.1.9 (OBJ_id_pkix_OCSP_valid) */,
+    374 /* 1.3.6.1.5.5.7.48.1.10 (OBJ_id_pkix_OCSP_path) */,
+    375 /* 1.3.6.1.5.5.7.48.1.11 (OBJ_id_pkix_OCSP_trustRoot) */,
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+    941 /* 1.3.133.16.840.63.0.3 (OBJ_dhSinglePass_cofactorDH_sha1kdf_scheme) */
+    ,
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+    899 /* 2.16.840.1.101.3.4.1.27 (OBJ_aes_192_ccm) */,
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+    902 /* 2.16.840.1.101.3.4.1.47 (OBJ_aes_256_ccm) */,
+    903 /* 2.16.840.1.101.3.4.1.48 (OBJ_id_aes256_wrap_pad) */,
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+    675 /* 2.16.840.1.101.3.4.2.4 (OBJ_sha224) */,
+    802 /* 2.16.840.1.101.3.4.3.1 (OBJ_dsa_with_SHA224) */,
+    803 /* 2.16.840.1.101.3.4.3.2 (OBJ_dsa_with_SHA256) */,
+    71 /* 2.16.840.1.113730.1.1 (OBJ_netscape_cert_type) */,
+    72 /* 2.16.840.1.113730.1.2 (OBJ_netscape_base_url) */,
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+    74 /* 2.16.840.1.113730.1.4 (OBJ_netscape_ca_revocation_url) */,
+    75 /* 2.16.840.1.113730.1.7 (OBJ_netscape_renewal_url) */,
+    76 /* 2.16.840.1.113730.1.8 (OBJ_netscape_ca_policy_url) */,
+    77 /* 2.16.840.1.113730.1.12 (OBJ_netscape_ssl_server_name) */,
+    78 /* 2.16.840.1.113730.1.13 (OBJ_netscape_comment) */,
+    79 /* 2.16.840.1.113730.2.5 (OBJ_netscape_cert_sequence) */,
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+    459 /* 0.9.2342.19200300.100.1.2 (OBJ_textEncodedORAddress) */,
+    460 /* 0.9.2342.19200300.100.1.3 (OBJ_rfc822Mailbox) */,
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+    462 /* 0.9.2342.19200300.100.1.5 (OBJ_favouriteDrink) */,
+    463 /* 0.9.2342.19200300.100.1.6 (OBJ_roomNumber) */,
+    464 /* 0.9.2342.19200300.100.1.7 (OBJ_photo) */,
+    465 /* 0.9.2342.19200300.100.1.8 (OBJ_userClass) */,
+    466 /* 0.9.2342.19200300.100.1.9 (OBJ_host) */,
+    467 /* 0.9.2342.19200300.100.1.10 (OBJ_manager) */,
+    468 /* 0.9.2342.19200300.100.1.11 (OBJ_documentIdentifier) */,
+    469 /* 0.9.2342.19200300.100.1.12 (OBJ_documentTitle) */,
+    470 /* 0.9.2342.19200300.100.1.13 (OBJ_documentVersion) */,
+    471 /* 0.9.2342.19200300.100.1.14 (OBJ_documentAuthor) */,
+    472 /* 0.9.2342.19200300.100.1.15 (OBJ_documentLocation) */,
+    473 /* 0.9.2342.19200300.100.1.20 (OBJ_homeTelephoneNumber) */,
+    474 /* 0.9.2342.19200300.100.1.21 (OBJ_secretary) */,
+    475 /* 0.9.2342.19200300.100.1.22 (OBJ_otherMailbox) */,
+    476 /* 0.9.2342.19200300.100.1.23 (OBJ_lastModifiedTime) */,
+    477 /* 0.9.2342.19200300.100.1.24 (OBJ_lastModifiedBy) */,
+    391 /* 0.9.2342.19200300.100.1.25 (OBJ_domainComponent) */,
+    478 /* 0.9.2342.19200300.100.1.26 (OBJ_aRecord) */,
+    479 /* 0.9.2342.19200300.100.1.27 (OBJ_pilotAttributeType27) */,
+    480 /* 0.9.2342.19200300.100.1.28 (OBJ_mXRecord) */,
+    481 /* 0.9.2342.19200300.100.1.29 (OBJ_nSRecord) */,
+    482 /* 0.9.2342.19200300.100.1.30 (OBJ_sOARecord) */,
+    483 /* 0.9.2342.19200300.100.1.31 (OBJ_cNAMERecord) */,
+    484 /* 0.9.2342.19200300.100.1.37 (OBJ_associatedDomain) */,
+    485 /* 0.9.2342.19200300.100.1.38 (OBJ_associatedName) */,
+    486 /* 0.9.2342.19200300.100.1.39 (OBJ_homePostalAddress) */,
+    487 /* 0.9.2342.19200300.100.1.40 (OBJ_personalTitle) */,
+    488 /* 0.9.2342.19200300.100.1.41 (OBJ_mobileTelephoneNumber) */,
+    489 /* 0.9.2342.19200300.100.1.42 (OBJ_pagerTelephoneNumber) */,
+    490 /* 0.9.2342.19200300.100.1.43 (OBJ_friendlyCountryName) */,
+    491 /* 0.9.2342.19200300.100.1.45 (OBJ_organizationalStatus) */,
+    492 /* 0.9.2342.19200300.100.1.46 (OBJ_janetMailbox) */,
+    493 /* 0.9.2342.19200300.100.1.47 (OBJ_mailPreferenceOption) */,
+    494 /* 0.9.2342.19200300.100.1.48 (OBJ_buildingName) */,
+    495 /* 0.9.2342.19200300.100.1.49 (OBJ_dSAQuality) */,
+    496 /* 0.9.2342.19200300.100.1.50 (OBJ_singleLevelQuality) */,
+    497 /* 0.9.2342.19200300.100.1.51 (OBJ_subtreeMinimumQuality) */,
+    498 /* 0.9.2342.19200300.100.1.52 (OBJ_subtreeMaximumQuality) */,
+    499 /* 0.9.2342.19200300.100.1.53 (OBJ_personalSignature) */,
+    500 /* 0.9.2342.19200300.100.1.54 (OBJ_dITRedirect) */,
+    501 /* 0.9.2342.19200300.100.1.55 (OBJ_audio) */,
+    502 /* 0.9.2342.19200300.100.1.56 (OBJ_documentPublisher) */,
+    442 /* 0.9.2342.19200300.100.3.4 (OBJ_iA5StringSyntax) */,
+    443 /* 0.9.2342.19200300.100.3.5 (OBJ_caseIgnoreIA5StringSyntax) */,
+    444 /* 0.9.2342.19200300.100.4.3 (OBJ_pilotObject) */,
+    445 /* 0.9.2342.19200300.100.4.4 (OBJ_pilotPerson) */,
+    446 /* 0.9.2342.19200300.100.4.5 (OBJ_account) */,
+    447 /* 0.9.2342.19200300.100.4.6 (OBJ_document) */,
+    448 /* 0.9.2342.19200300.100.4.7 (OBJ_room) */,
+    449 /* 0.9.2342.19200300.100.4.9 (OBJ_documentSeries) */,
+    392 /* 0.9.2342.19200300.100.4.13 (OBJ_Domain) */,
+    450 /* 0.9.2342.19200300.100.4.14 (OBJ_rFC822localPart) */,
+    451 /* 0.9.2342.19200300.100.4.15 (OBJ_dNSDomain) */,
+    452 /* 0.9.2342.19200300.100.4.17 (OBJ_domainRelatedObject) */,
+    453 /* 0.9.2342.19200300.100.4.18 (OBJ_friendlyCountry) */,
+    454 /* 0.9.2342.19200300.100.4.19 (OBJ_simpleSecurityObject) */,
+    455 /* 0.9.2342.19200300.100.4.20 (OBJ_pilotOrganization) */,
+    456 /* 0.9.2342.19200300.100.4.21 (OBJ_pilotDSA) */,
+    457 /* 0.9.2342.19200300.100.4.22 (OBJ_qualityLabelledData) */,
+    189 /* 1.2.840.113549.1.9.16.0 (OBJ_id_smime_mod) */,
+    190 /* 1.2.840.113549.1.9.16.1 (OBJ_id_smime_ct) */,
+    191 /* 1.2.840.113549.1.9.16.2 (OBJ_id_smime_aa) */,
+    192 /* 1.2.840.113549.1.9.16.3 (OBJ_id_smime_alg) */,
+    193 /* 1.2.840.113549.1.9.16.4 (OBJ_id_smime_cd) */,
+    194 /* 1.2.840.113549.1.9.16.5 (OBJ_id_smime_spq) */,
+    195 /* 1.2.840.113549.1.9.16.6 (OBJ_id_smime_cti) */,
+    158 /* 1.2.840.113549.1.9.22.1 (OBJ_x509Certificate) */,
+    159 /* 1.2.840.113549.1.9.22.2 (OBJ_sdsiCertificate) */,
+    160 /* 1.2.840.113549.1.9.23.1 (OBJ_x509Crl) */,
+    144 /* 1.2.840.113549.1.12.1.1 (OBJ_pbe_WithSHA1And128BitRC4) */,
+    145 /* 1.2.840.113549.1.12.1.2 (OBJ_pbe_WithSHA1And40BitRC4) */,
+    146 /* 1.2.840.113549.1.12.1.3 (OBJ_pbe_WithSHA1And3_Key_TripleDES_CBC) */,
+    147 /* 1.2.840.113549.1.12.1.4 (OBJ_pbe_WithSHA1And2_Key_TripleDES_CBC) */,
+    148 /* 1.2.840.113549.1.12.1.5 (OBJ_pbe_WithSHA1And128BitRC2_CBC) */,
+    149 /* 1.2.840.113549.1.12.1.6 (OBJ_pbe_WithSHA1And40BitRC2_CBC) */,
+    171 /* 1.3.6.1.4.1.311.2.1.14 (OBJ_ms_ext_req) */,
+    134 /* 1.3.6.1.4.1.311.2.1.21 (OBJ_ms_code_ind) */,
+    135 /* 1.3.6.1.4.1.311.2.1.22 (OBJ_ms_code_com) */,
+    136 /* 1.3.6.1.4.1.311.10.3.1 (OBJ_ms_ctl_sign) */,
+    137 /* 1.3.6.1.4.1.311.10.3.3 (OBJ_ms_sgc) */,
+    138 /* 1.3.6.1.4.1.311.10.3.4 (OBJ_ms_efs) */,
+    648 /* 1.3.6.1.4.1.311.20.2.2 (OBJ_ms_smartcard_login) */,
+    649 /* 1.3.6.1.4.1.311.20.2.3 (OBJ_ms_upn) */,
+    751 /* 1.2.392.200011.61.1.1.1.2 (OBJ_camellia_128_cbc) */,
+    752 /* 1.2.392.200011.61.1.1.1.3 (OBJ_camellia_192_cbc) */,
+    753 /* 1.2.392.200011.61.1.1.1.4 (OBJ_camellia_256_cbc) */,
+    907 /* 1.2.392.200011.61.1.1.3.2 (OBJ_id_camellia128_wrap) */,
+    908 /* 1.2.392.200011.61.1.1.3.3 (OBJ_id_camellia192_wrap) */,
+    909 /* 1.2.392.200011.61.1.1.3.4 (OBJ_id_camellia256_wrap) */,
+    196 /* 1.2.840.113549.1.9.16.0.1 (OBJ_id_smime_mod_cms) */,
+    197 /* 1.2.840.113549.1.9.16.0.2 (OBJ_id_smime_mod_ess) */,
+    198 /* 1.2.840.113549.1.9.16.0.3 (OBJ_id_smime_mod_oid) */,
+    199 /* 1.2.840.113549.1.9.16.0.4 (OBJ_id_smime_mod_msg_v3) */,
+    200 /* 1.2.840.113549.1.9.16.0.5 (OBJ_id_smime_mod_ets_eSignature_88) */,
+    201 /* 1.2.840.113549.1.9.16.0.6 (OBJ_id_smime_mod_ets_eSignature_97) */,
+    202 /* 1.2.840.113549.1.9.16.0.7 (OBJ_id_smime_mod_ets_eSigPolicy_88) */,
+    203 /* 1.2.840.113549.1.9.16.0.8 (OBJ_id_smime_mod_ets_eSigPolicy_97) */,
+    204 /* 1.2.840.113549.1.9.16.1.1 (OBJ_id_smime_ct_receipt) */,
+    205 /* 1.2.840.113549.1.9.16.1.2 (OBJ_id_smime_ct_authData) */,
+    206 /* 1.2.840.113549.1.9.16.1.3 (OBJ_id_smime_ct_publishCert) */,
+    207 /* 1.2.840.113549.1.9.16.1.4 (OBJ_id_smime_ct_TSTInfo) */,
+    208 /* 1.2.840.113549.1.9.16.1.5 (OBJ_id_smime_ct_TDTInfo) */,
+    209 /* 1.2.840.113549.1.9.16.1.6 (OBJ_id_smime_ct_contentInfo) */,
+    210 /* 1.2.840.113549.1.9.16.1.7 (OBJ_id_smime_ct_DVCSRequestData) */,
+    211 /* 1.2.840.113549.1.9.16.1.8 (OBJ_id_smime_ct_DVCSResponseData) */,
+    786 /* 1.2.840.113549.1.9.16.1.9 (OBJ_id_smime_ct_compressedData) */,
+    787 /* 1.2.840.113549.1.9.16.1.27 (OBJ_id_ct_asciiTextWithCRLF) */,
+    212 /* 1.2.840.113549.1.9.16.2.1 (OBJ_id_smime_aa_receiptRequest) */,
+    213 /* 1.2.840.113549.1.9.16.2.2 (OBJ_id_smime_aa_securityLabel) */,
+    214 /* 1.2.840.113549.1.9.16.2.3 (OBJ_id_smime_aa_mlExpandHistory) */,
+    215 /* 1.2.840.113549.1.9.16.2.4 (OBJ_id_smime_aa_contentHint) */,
+    216 /* 1.2.840.113549.1.9.16.2.5 (OBJ_id_smime_aa_msgSigDigest) */,
+    217 /* 1.2.840.113549.1.9.16.2.6 (OBJ_id_smime_aa_encapContentType) */,
+    218 /* 1.2.840.113549.1.9.16.2.7 (OBJ_id_smime_aa_contentIdentifier) */,
+    219 /* 1.2.840.113549.1.9.16.2.8 (OBJ_id_smime_aa_macValue) */,
+    220 /* 1.2.840.113549.1.9.16.2.9 (OBJ_id_smime_aa_equivalentLabels) */,
+    221 /* 1.2.840.113549.1.9.16.2.10 (OBJ_id_smime_aa_contentReference) */,
+    222 /* 1.2.840.113549.1.9.16.2.11 (OBJ_id_smime_aa_encrypKeyPref) */,
+    223 /* 1.2.840.113549.1.9.16.2.12 (OBJ_id_smime_aa_signingCertificate) */,
+    224 /* 1.2.840.113549.1.9.16.2.13 (OBJ_id_smime_aa_smimeEncryptCerts) */,
+    225 /* 1.2.840.113549.1.9.16.2.14 (OBJ_id_smime_aa_timeStampToken) */,
+    226 /* 1.2.840.113549.1.9.16.2.15 (OBJ_id_smime_aa_ets_sigPolicyId) */,
+    227 /* 1.2.840.113549.1.9.16.2.16 (OBJ_id_smime_aa_ets_commitmentType) */,
+    228 /* 1.2.840.113549.1.9.16.2.17 (OBJ_id_smime_aa_ets_signerLocation) */,
+    229 /* 1.2.840.113549.1.9.16.2.18 (OBJ_id_smime_aa_ets_signerAttr) */,
+    230 /* 1.2.840.113549.1.9.16.2.19 (OBJ_id_smime_aa_ets_otherSigCert) */,
+    231 /* 1.2.840.113549.1.9.16.2.20 (OBJ_id_smime_aa_ets_contentTimestamp) */,
+    232 /* 1.2.840.113549.1.9.16.2.21 (OBJ_id_smime_aa_ets_CertificateRefs) */,
+    233 /* 1.2.840.113549.1.9.16.2.22 (OBJ_id_smime_aa_ets_RevocationRefs) */,
+    234 /* 1.2.840.113549.1.9.16.2.23 (OBJ_id_smime_aa_ets_certValues) */,
+    235 /* 1.2.840.113549.1.9.16.2.24 (OBJ_id_smime_aa_ets_revocationValues) */,
+    236 /* 1.2.840.113549.1.9.16.2.25 (OBJ_id_smime_aa_ets_escTimeStamp) */,
+    237 /* 1.2.840.113549.1.9.16.2.26 (OBJ_id_smime_aa_ets_certCRLTimestamp) */,
+    238 /* 1.2.840.113549.1.9.16.2.27 (OBJ_id_smime_aa_ets_archiveTimeStamp) */,
+    239 /* 1.2.840.113549.1.9.16.2.28 (OBJ_id_smime_aa_signatureType) */,
+    240 /* 1.2.840.113549.1.9.16.2.29 (OBJ_id_smime_aa_dvcs_dvc) */,
+    241 /* 1.2.840.113549.1.9.16.3.1 (OBJ_id_smime_alg_ESDHwith3DES) */,
+    242 /* 1.2.840.113549.1.9.16.3.2 (OBJ_id_smime_alg_ESDHwithRC2) */,
+    243 /* 1.2.840.113549.1.9.16.3.3 (OBJ_id_smime_alg_3DESwrap) */,
+    244 /* 1.2.840.113549.1.9.16.3.4 (OBJ_id_smime_alg_RC2wrap) */,
+    245 /* 1.2.840.113549.1.9.16.3.5 (OBJ_id_smime_alg_ESDH) */,
+    246 /* 1.2.840.113549.1.9.16.3.6 (OBJ_id_smime_alg_CMS3DESwrap) */,
+    247 /* 1.2.840.113549.1.9.16.3.7 (OBJ_id_smime_alg_CMSRC2wrap) */,
+    125 /* 1.2.840.113549.1.9.16.3.8 (OBJ_zlib_compression) */,
+    893 /* 1.2.840.113549.1.9.16.3.9 (OBJ_id_alg_PWRI_KEK) */,
+    248 /* 1.2.840.113549.1.9.16.4.1 (OBJ_id_smime_cd_ldap) */,
+    249 /* 1.2.840.113549.1.9.16.5.1 (OBJ_id_smime_spq_ets_sqt_uri) */,
+    250 /* 1.2.840.113549.1.9.16.5.2 (OBJ_id_smime_spq_ets_sqt_unotice) */,
+    251 /* 1.2.840.113549.1.9.16.6.1 (OBJ_id_smime_cti_ets_proofOfOrigin) */,
+    252 /* 1.2.840.113549.1.9.16.6.2 (OBJ_id_smime_cti_ets_proofOfReceipt) */,
+    253 /* 1.2.840.113549.1.9.16.6.3 (OBJ_id_smime_cti_ets_proofOfDelivery) */,
+    254 /* 1.2.840.113549.1.9.16.6.4 (OBJ_id_smime_cti_ets_proofOfSender) */,
+    255 /* 1.2.840.113549.1.9.16.6.5 (OBJ_id_smime_cti_ets_proofOfApproval) */,
+    256 /* 1.2.840.113549.1.9.16.6.6 (OBJ_id_smime_cti_ets_proofOfCreation) */,
+    150 /* 1.2.840.113549.1.12.10.1.1 (OBJ_keyBag) */,
+    151 /* 1.2.840.113549.1.12.10.1.2 (OBJ_pkcs8ShroudedKeyBag) */,
+    152 /* 1.2.840.113549.1.12.10.1.3 (OBJ_certBag) */,
+    153 /* 1.2.840.113549.1.12.10.1.4 (OBJ_crlBag) */,
+    154 /* 1.2.840.113549.1.12.10.1.5 (OBJ_secretBag) */,
+    155 /* 1.2.840.113549.1.12.10.1.6 (OBJ_safeContentsBag) */,
+    34 /* 1.3.6.1.4.1.188.7.1.1.2 (OBJ_idea_cbc) */,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h.grpc_back
new file mode 100644
index 0000000..888ea67
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_dat.h.grpc_back	
@@ -0,0 +1,11571 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+/* This file is generated by crypto/obj/objects.go. */
+
+
+#define NUM_NID 962
+
+static const uint8_t kObjectData[] = {
+    /* NID_rsadsi */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    /* NID_pkcs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    /* NID_md2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x02,
+    /* NID_md5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x05,
+    /* NID_rc4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x04,
+    /* NID_rsaEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_md2WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_md5WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_pbeWithMD2AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x01,
+    /* NID_pbeWithMD5AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x03,
+    /* NID_X500 */
+    0x55,
+    /* NID_X509 */
+    0x55,
+    0x04,
+    /* NID_commonName */
+    0x55,
+    0x04,
+    0x03,
+    /* NID_countryName */
+    0x55,
+    0x04,
+    0x06,
+    /* NID_localityName */
+    0x55,
+    0x04,
+    0x07,
+    /* NID_stateOrProvinceName */
+    0x55,
+    0x04,
+    0x08,
+    /* NID_organizationName */
+    0x55,
+    0x04,
+    0x0a,
+    /* NID_organizationalUnitName */
+    0x55,
+    0x04,
+    0x0b,
+    /* NID_rsa */
+    0x55,
+    0x08,
+    0x01,
+    0x01,
+    /* NID_pkcs7 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    /* NID_pkcs7_data */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x01,
+    /* NID_pkcs7_signed */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x02,
+    /* NID_pkcs7_enveloped */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x03,
+    /* NID_pkcs7_signedAndEnveloped */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x04,
+    /* NID_pkcs7_digest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x05,
+    /* NID_pkcs7_encrypted */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x07,
+    0x06,
+    /* NID_pkcs3 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x03,
+    /* NID_dhKeyAgreement */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x03,
+    0x01,
+    /* NID_des_ecb */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x06,
+    /* NID_des_cfb64 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x09,
+    /* NID_des_cbc */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x07,
+    /* NID_des_ede_ecb */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x11,
+    /* NID_idea_cbc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x81,
+    0x3c,
+    0x07,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_rc2_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x02,
+    /* NID_sha */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x12,
+    /* NID_shaWithRSAEncryption */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0f,
+    /* NID_des_ede3_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x07,
+    /* NID_des_ofb64 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x08,
+    /* NID_pkcs9 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    /* NID_pkcs9_emailAddress */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x01,
+    /* NID_pkcs9_unstructuredName */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x02,
+    /* NID_pkcs9_contentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x03,
+    /* NID_pkcs9_messageDigest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x04,
+    /* NID_pkcs9_signingTime */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x05,
+    /* NID_pkcs9_countersignature */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x06,
+    /* NID_pkcs9_challengePassword */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x07,
+    /* NID_pkcs9_unstructuredAddress */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x08,
+    /* NID_pkcs9_extCertAttributes */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x09,
+    /* NID_netscape */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    /* NID_netscape_cert_extension */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    /* NID_netscape_data_type */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x02,
+    /* NID_sha1 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1a,
+    /* NID_sha1WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x05,
+    /* NID_dsaWithSHA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0d,
+    /* NID_dsa_2 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0c,
+    /* NID_pbeWithSHA1AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0b,
+    /* NID_id_pbkdf2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0c,
+    /* NID_dsaWithSHA1_2 */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1b,
+    /* NID_netscape_cert_type */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x01,
+    /* NID_netscape_base_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x02,
+    /* NID_netscape_revocation_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x03,
+    /* NID_netscape_ca_revocation_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x04,
+    /* NID_netscape_renewal_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x07,
+    /* NID_netscape_ca_policy_url */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x08,
+    /* NID_netscape_ssl_server_name */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x0c,
+    /* NID_netscape_comment */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x01,
+    0x0d,
+    /* NID_netscape_cert_sequence */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x02,
+    0x05,
+    /* NID_id_ce */
+    0x55,
+    0x1d,
+    /* NID_subject_key_identifier */
+    0x55,
+    0x1d,
+    0x0e,
+    /* NID_key_usage */
+    0x55,
+    0x1d,
+    0x0f,
+    /* NID_private_key_usage_period */
+    0x55,
+    0x1d,
+    0x10,
+    /* NID_subject_alt_name */
+    0x55,
+    0x1d,
+    0x11,
+    /* NID_issuer_alt_name */
+    0x55,
+    0x1d,
+    0x12,
+    /* NID_basic_constraints */
+    0x55,
+    0x1d,
+    0x13,
+    /* NID_crl_number */
+    0x55,
+    0x1d,
+    0x14,
+    /* NID_certificate_policies */
+    0x55,
+    0x1d,
+    0x20,
+    /* NID_authority_key_identifier */
+    0x55,
+    0x1d,
+    0x23,
+    /* NID_bf_cbc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x97,
+    0x55,
+    0x01,
+    0x02,
+    /* NID_mdc2 */
+    0x55,
+    0x08,
+    0x03,
+    0x65,
+    /* NID_mdc2WithRSA */
+    0x55,
+    0x08,
+    0x03,
+    0x64,
+    /* NID_givenName */
+    0x55,
+    0x04,
+    0x2a,
+    /* NID_surname */
+    0x55,
+    0x04,
+    0x04,
+    /* NID_initials */
+    0x55,
+    0x04,
+    0x2b,
+    /* NID_crl_distribution_points */
+    0x55,
+    0x1d,
+    0x1f,
+    /* NID_md5WithRSA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x03,
+    /* NID_serialNumber */
+    0x55,
+    0x04,
+    0x05,
+    /* NID_title */
+    0x55,
+    0x04,
+    0x0c,
+    /* NID_description */
+    0x55,
+    0x04,
+    0x0d,
+    /* NID_cast5_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0a,
+    /* NID_pbeWithMD5AndCast5_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0c,
+    /* NID_dsaWithSHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    0x03,
+    /* NID_sha1WithRSA */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x1d,
+    /* NID_dsa */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    0x01,
+    /* NID_ripemd160 */
+    0x2b,
+    0x24,
+    0x03,
+    0x02,
+    0x01,
+    /* NID_ripemd160WithRSA */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x01,
+    0x02,
+    /* NID_rc5_cbc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x08,
+    /* NID_zlib_compression */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x08,
+    /* NID_ext_key_usage */
+    0x55,
+    0x1d,
+    0x25,
+    /* NID_id_pkix */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    /* NID_id_kp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    /* NID_server_auth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x01,
+    /* NID_client_auth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x02,
+    /* NID_code_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x03,
+    /* NID_email_protect */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x04,
+    /* NID_time_stamp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x08,
+    /* NID_ms_code_ind */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x15,
+    /* NID_ms_code_com */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x16,
+    /* NID_ms_ctl_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x01,
+    /* NID_ms_sgc */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x03,
+    /* NID_ms_efs */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x0a,
+    0x03,
+    0x04,
+    /* NID_ns_sgc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x86,
+    0xf8,
+    0x42,
+    0x04,
+    0x01,
+    /* NID_delta_crl */
+    0x55,
+    0x1d,
+    0x1b,
+    /* NID_crl_reason */
+    0x55,
+    0x1d,
+    0x15,
+    /* NID_invalidity_date */
+    0x55,
+    0x1d,
+    0x18,
+    /* NID_sxnet */
+    0x2b,
+    0x65,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_pbe_WithSHA1And128BitRC4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x01,
+    /* NID_pbe_WithSHA1And40BitRC4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x02,
+    /* NID_pbe_WithSHA1And3_Key_TripleDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x03,
+    /* NID_pbe_WithSHA1And2_Key_TripleDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x04,
+    /* NID_pbe_WithSHA1And128BitRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x05,
+    /* NID_pbe_WithSHA1And40BitRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x01,
+    0x06,
+    /* NID_keyBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x01,
+    /* NID_pkcs8ShroudedKeyBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x02,
+    /* NID_certBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x03,
+    /* NID_crlBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x04,
+    /* NID_secretBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x05,
+    /* NID_safeContentsBag */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x0c,
+    0x0a,
+    0x01,
+    0x06,
+    /* NID_friendlyName */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x14,
+    /* NID_localKeyID */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x15,
+    /* NID_x509Certificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x16,
+    0x01,
+    /* NID_sdsiCertificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x16,
+    0x02,
+    /* NID_x509Crl */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x17,
+    0x01,
+    /* NID_pbes2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0d,
+    /* NID_pbmac1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0e,
+    /* NID_hmacWithSHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x07,
+    /* NID_id_qt_cps */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x01,
+    /* NID_id_qt_unotice */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x02,
+    /* NID_SMIMECapabilities */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x0f,
+    /* NID_pbeWithMD2AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x04,
+    /* NID_pbeWithMD5AndRC2_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x06,
+    /* NID_pbeWithSHA1AndDES_CBC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    0x0a,
+    /* NID_ms_ext_req */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x02,
+    0x01,
+    0x0e,
+    /* NID_ext_req */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x0e,
+    /* NID_name */
+    0x55,
+    0x04,
+    0x29,
+    /* NID_dnQualifier */
+    0x55,
+    0x04,
+    0x2e,
+    /* NID_id_pe */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    /* NID_id_ad */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    /* NID_info_access */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x01,
+    /* NID_ad_OCSP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    /* NID_ad_ca_issuers */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x02,
+    /* NID_OCSP_sign */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x09,
+    /* NID_member_body */
+    0x2a,
+    /* NID_ISO_US */
+    0x2a,
+    0x86,
+    0x48,
+    /* NID_X9_57 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    /* NID_X9cm */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x04,
+    /* NID_pkcs1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    /* NID_pkcs5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x05,
+    /* NID_SMIME */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    /* NID_id_smime_mod */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    /* NID_id_smime_ct */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    /* NID_id_smime_aa */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    /* NID_id_smime_alg */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    /* NID_id_smime_cd */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x04,
+    /* NID_id_smime_spq */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    /* NID_id_smime_cti */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    /* NID_id_smime_mod_cms */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x01,
+    /* NID_id_smime_mod_ess */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x02,
+    /* NID_id_smime_mod_oid */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x03,
+    /* NID_id_smime_mod_msg_v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x04,
+    /* NID_id_smime_mod_ets_eSignature_88 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x05,
+    /* NID_id_smime_mod_ets_eSignature_97 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x06,
+    /* NID_id_smime_mod_ets_eSigPolicy_88 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x07,
+    /* NID_id_smime_mod_ets_eSigPolicy_97 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x00,
+    0x08,
+    /* NID_id_smime_ct_receipt */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x01,
+    /* NID_id_smime_ct_authData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x02,
+    /* NID_id_smime_ct_publishCert */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x03,
+    /* NID_id_smime_ct_TSTInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x04,
+    /* NID_id_smime_ct_TDTInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x05,
+    /* NID_id_smime_ct_contentInfo */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x06,
+    /* NID_id_smime_ct_DVCSRequestData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x07,
+    /* NID_id_smime_ct_DVCSResponseData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x08,
+    /* NID_id_smime_aa_receiptRequest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x01,
+    /* NID_id_smime_aa_securityLabel */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x02,
+    /* NID_id_smime_aa_mlExpandHistory */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x03,
+    /* NID_id_smime_aa_contentHint */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x04,
+    /* NID_id_smime_aa_msgSigDigest */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x05,
+    /* NID_id_smime_aa_encapContentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x06,
+    /* NID_id_smime_aa_contentIdentifier */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x07,
+    /* NID_id_smime_aa_macValue */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x08,
+    /* NID_id_smime_aa_equivalentLabels */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x09,
+    /* NID_id_smime_aa_contentReference */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0a,
+    /* NID_id_smime_aa_encrypKeyPref */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0b,
+    /* NID_id_smime_aa_signingCertificate */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0c,
+    /* NID_id_smime_aa_smimeEncryptCerts */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0d,
+    /* NID_id_smime_aa_timeStampToken */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0e,
+    /* NID_id_smime_aa_ets_sigPolicyId */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x0f,
+    /* NID_id_smime_aa_ets_commitmentType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x10,
+    /* NID_id_smime_aa_ets_signerLocation */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x11,
+    /* NID_id_smime_aa_ets_signerAttr */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x12,
+    /* NID_id_smime_aa_ets_otherSigCert */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x13,
+    /* NID_id_smime_aa_ets_contentTimestamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x14,
+    /* NID_id_smime_aa_ets_CertificateRefs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x15,
+    /* NID_id_smime_aa_ets_RevocationRefs */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x16,
+    /* NID_id_smime_aa_ets_certValues */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x17,
+    /* NID_id_smime_aa_ets_revocationValues */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x18,
+    /* NID_id_smime_aa_ets_escTimeStamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x19,
+    /* NID_id_smime_aa_ets_certCRLTimestamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1a,
+    /* NID_id_smime_aa_ets_archiveTimeStamp */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1b,
+    /* NID_id_smime_aa_signatureType */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1c,
+    /* NID_id_smime_aa_dvcs_dvc */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x02,
+    0x1d,
+    /* NID_id_smime_alg_ESDHwith3DES */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x01,
+    /* NID_id_smime_alg_ESDHwithRC2 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x02,
+    /* NID_id_smime_alg_3DESwrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x03,
+    /* NID_id_smime_alg_RC2wrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x04,
+    /* NID_id_smime_alg_ESDH */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x05,
+    /* NID_id_smime_alg_CMS3DESwrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x06,
+    /* NID_id_smime_alg_CMSRC2wrap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x07,
+    /* NID_id_smime_cd_ldap */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x04,
+    0x01,
+    /* NID_id_smime_spq_ets_sqt_uri */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    0x01,
+    /* NID_id_smime_spq_ets_sqt_unotice */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x05,
+    0x02,
+    /* NID_id_smime_cti_ets_proofOfOrigin */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x01,
+    /* NID_id_smime_cti_ets_proofOfReceipt */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x02,
+    /* NID_id_smime_cti_ets_proofOfDelivery */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x03,
+    /* NID_id_smime_cti_ets_proofOfSender */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x04,
+    /* NID_id_smime_cti_ets_proofOfApproval */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x05,
+    /* NID_id_smime_cti_ets_proofOfCreation */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x06,
+    0x06,
+    /* NID_md4 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x04,
+    /* NID_id_pkix_mod */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    /* NID_id_qt */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    /* NID_id_it */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    /* NID_id_pkip */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    /* NID_id_alg */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    /* NID_id_cmc */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    /* NID_id_on */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    /* NID_id_pda */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    /* NID_id_aca */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    /* NID_id_qcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0b,
+    /* NID_id_cct */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    /* NID_id_pkix1_explicit_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x01,
+    /* NID_id_pkix1_implicit_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x02,
+    /* NID_id_pkix1_explicit_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x03,
+    /* NID_id_pkix1_implicit_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x04,
+    /* NID_id_mod_crmf */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x05,
+    /* NID_id_mod_cmc */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x06,
+    /* NID_id_mod_kea_profile_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x07,
+    /* NID_id_mod_kea_profile_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x08,
+    /* NID_id_mod_cmp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x09,
+    /* NID_id_mod_qualified_cert_88 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0a,
+    /* NID_id_mod_qualified_cert_93 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0b,
+    /* NID_id_mod_attribute_cert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0c,
+    /* NID_id_mod_timestamp_protocol */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0d,
+    /* NID_id_mod_ocsp */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0e,
+    /* NID_id_mod_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x0f,
+    /* NID_id_mod_cmp2000 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x00,
+    0x10,
+    /* NID_biometricInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x02,
+    /* NID_qcStatements */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x03,
+    /* NID_ac_auditEntity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x04,
+    /* NID_ac_targeting */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x05,
+    /* NID_aaControls */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x06,
+    /* NID_sbgp_ipAddrBlock */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x07,
+    /* NID_sbgp_autonomousSysNum */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x08,
+    /* NID_sbgp_routerIdentifier */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x09,
+    /* NID_textNotice */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x02,
+    0x03,
+    /* NID_ipsecEndSystem */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x05,
+    /* NID_ipsecTunnel */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x06,
+    /* NID_ipsecUser */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x07,
+    /* NID_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x03,
+    0x0a,
+    /* NID_id_it_caProtEncCert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x01,
+    /* NID_id_it_signKeyPairTypes */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x02,
+    /* NID_id_it_encKeyPairTypes */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x03,
+    /* NID_id_it_preferredSymmAlg */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x04,
+    /* NID_id_it_caKeyUpdateInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x05,
+    /* NID_id_it_currentCRL */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x06,
+    /* NID_id_it_unsupportedOIDs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x07,
+    /* NID_id_it_subscriptionRequest */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x08,
+    /* NID_id_it_subscriptionResponse */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x09,
+    /* NID_id_it_keyPairParamReq */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0a,
+    /* NID_id_it_keyPairParamRep */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0b,
+    /* NID_id_it_revPassphrase */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0c,
+    /* NID_id_it_implicitConfirm */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0d,
+    /* NID_id_it_confirmWaitTime */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0e,
+    /* NID_id_it_origPKIMessage */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x0f,
+    /* NID_id_regCtrl */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    /* NID_id_regInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    /* NID_id_regCtrl_regToken */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x01,
+    /* NID_id_regCtrl_authenticator */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x02,
+    /* NID_id_regCtrl_pkiPublicationInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x03,
+    /* NID_id_regCtrl_pkiArchiveOptions */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x04,
+    /* NID_id_regCtrl_oldCertID */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x05,
+    /* NID_id_regCtrl_protocolEncrKey */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x01,
+    0x06,
+    /* NID_id_regInfo_utf8Pairs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    0x01,
+    /* NID_id_regInfo_certReq */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x05,
+    0x02,
+    0x02,
+    /* NID_id_alg_des40 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x01,
+    /* NID_id_alg_noSignature */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x02,
+    /* NID_id_alg_dh_sig_hmac_sha1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x03,
+    /* NID_id_alg_dh_pop */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x06,
+    0x04,
+    /* NID_id_cmc_statusInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x01,
+    /* NID_id_cmc_identification */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x02,
+    /* NID_id_cmc_identityProof */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x03,
+    /* NID_id_cmc_dataReturn */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x04,
+    /* NID_id_cmc_transactionId */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x05,
+    /* NID_id_cmc_senderNonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x06,
+    /* NID_id_cmc_recipientNonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x07,
+    /* NID_id_cmc_addExtensions */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x08,
+    /* NID_id_cmc_encryptedPOP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x09,
+    /* NID_id_cmc_decryptedPOP */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0a,
+    /* NID_id_cmc_lraPOPWitness */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0b,
+    /* NID_id_cmc_getCert */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x0f,
+    /* NID_id_cmc_getCRL */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x10,
+    /* NID_id_cmc_revokeRequest */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x11,
+    /* NID_id_cmc_regInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x12,
+    /* NID_id_cmc_responseInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x13,
+    /* NID_id_cmc_queryPending */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x15,
+    /* NID_id_cmc_popLinkRandom */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x16,
+    /* NID_id_cmc_popLinkWitness */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x17,
+    /* NID_id_cmc_confirmCertAcceptance */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x07,
+    0x18,
+    /* NID_id_on_personalData */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    0x01,
+    /* NID_id_pda_dateOfBirth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x01,
+    /* NID_id_pda_placeOfBirth */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x02,
+    /* NID_id_pda_gender */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x03,
+    /* NID_id_pda_countryOfCitizenship */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x04,
+    /* NID_id_pda_countryOfResidence */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x09,
+    0x05,
+    /* NID_id_aca_authenticationInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x01,
+    /* NID_id_aca_accessIdentity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x02,
+    /* NID_id_aca_chargingIdentity */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x03,
+    /* NID_id_aca_group */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x04,
+    /* NID_id_aca_role */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x05,
+    /* NID_id_qcs_pkixQCSyntax_v1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0b,
+    0x01,
+    /* NID_id_cct_crs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x01,
+    /* NID_id_cct_PKIData */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x02,
+    /* NID_id_cct_PKIResponse */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0c,
+    0x03,
+    /* NID_ad_timeStamping */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x03,
+    /* NID_ad_dvcs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x04,
+    /* NID_id_pkix_OCSP_basic */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x01,
+    /* NID_id_pkix_OCSP_Nonce */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x02,
+    /* NID_id_pkix_OCSP_CrlID */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x03,
+    /* NID_id_pkix_OCSP_acceptableResponses */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x04,
+    /* NID_id_pkix_OCSP_noCheck */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x05,
+    /* NID_id_pkix_OCSP_archiveCutoff */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x06,
+    /* NID_id_pkix_OCSP_serviceLocator */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x07,
+    /* NID_id_pkix_OCSP_extendedStatus */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x08,
+    /* NID_id_pkix_OCSP_valid */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x09,
+    /* NID_id_pkix_OCSP_path */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x0a,
+    /* NID_id_pkix_OCSP_trustRoot */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x01,
+    0x0b,
+    /* NID_algorithm */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    /* NID_rsaSignature */
+    0x2b,
+    0x0e,
+    0x03,
+    0x02,
+    0x0b,
+    /* NID_X500algorithms */
+    0x55,
+    0x08,
+    /* NID_org */
+    0x2b,
+    /* NID_dod */
+    0x2b,
+    0x06,
+    /* NID_iana */
+    0x2b,
+    0x06,
+    0x01,
+    /* NID_Directory */
+    0x2b,
+    0x06,
+    0x01,
+    0x01,
+    /* NID_Management */
+    0x2b,
+    0x06,
+    0x01,
+    0x02,
+    /* NID_Experimental */
+    0x2b,
+    0x06,
+    0x01,
+    0x03,
+    /* NID_Private */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    /* NID_Security */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    /* NID_SNMPv2 */
+    0x2b,
+    0x06,
+    0x01,
+    0x06,
+    /* NID_Mail */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    /* NID_Enterprises */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_dcObject */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x8b,
+    0x3a,
+    0x82,
+    0x58,
+    /* NID_domainComponent */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x19,
+    /* NID_Domain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0d,
+    /* NID_selected_attribute_types */
+    0x55,
+    0x01,
+    0x05,
+    /* NID_clearance */
+    0x55,
+    0x01,
+    0x05,
+    0x37,
+    /* NID_md4WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_ac_proxying */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0a,
+    /* NID_sinfo_access */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0b,
+    /* NID_id_aca_encAttrs */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x0a,
+    0x06,
+    /* NID_role */
+    0x55,
+    0x04,
+    0x48,
+    /* NID_policy_constraints */
+    0x55,
+    0x1d,
+    0x24,
+    /* NID_target_information */
+    0x55,
+    0x1d,
+    0x37,
+    /* NID_no_rev_avail */
+    0x55,
+    0x1d,
+    0x38,
+    /* NID_ansi_X9_62 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    /* NID_X9_62_prime_field */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x01,
+    /* NID_X9_62_characteristic_two_field */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    /* NID_X9_62_id_ecPublicKey */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x02,
+    0x01,
+    /* NID_X9_62_prime192v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x01,
+    /* NID_X9_62_prime192v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x02,
+    /* NID_X9_62_prime192v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x03,
+    /* NID_X9_62_prime239v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x04,
+    /* NID_X9_62_prime239v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x05,
+    /* NID_X9_62_prime239v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x06,
+    /* NID_X9_62_prime256v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x01,
+    0x07,
+    /* NID_ecdsa_with_SHA1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x01,
+    /* NID_ms_csp_name */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x11,
+    0x01,
+    /* NID_aes_128_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x01,
+    /* NID_aes_128_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x02,
+    /* NID_aes_128_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x03,
+    /* NID_aes_128_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x04,
+    /* NID_aes_192_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x15,
+    /* NID_aes_192_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x16,
+    /* NID_aes_192_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x17,
+    /* NID_aes_192_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x18,
+    /* NID_aes_256_ecb */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x29,
+    /* NID_aes_256_cbc */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2a,
+    /* NID_aes_256_ofb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2b,
+    /* NID_aes_256_cfb128 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2c,
+    /* NID_hold_instruction_code */
+    0x55,
+    0x1d,
+    0x17,
+    /* NID_hold_instruction_none */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x01,
+    /* NID_hold_instruction_call_issuer */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x02,
+    /* NID_hold_instruction_reject */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x38,
+    0x02,
+    0x03,
+    /* NID_data */
+    0x09,
+    /* NID_pss */
+    0x09,
+    0x92,
+    0x26,
+    /* NID_ucl */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    /* NID_pilot */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    /* NID_pilotAttributeType */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    /* NID_pilotAttributeSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    /* NID_pilotObjectClass */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    /* NID_pilotGroups */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x0a,
+    /* NID_iA5StringSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    0x04,
+    /* NID_caseIgnoreIA5StringSyntax */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x03,
+    0x05,
+    /* NID_pilotObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x03,
+    /* NID_pilotPerson */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x04,
+    /* NID_account */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x05,
+    /* NID_document */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x06,
+    /* NID_room */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x07,
+    /* NID_documentSeries */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x09,
+    /* NID_rFC822localPart */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0e,
+    /* NID_dNSDomain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x0f,
+    /* NID_domainRelatedObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x11,
+    /* NID_friendlyCountry */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x12,
+    /* NID_simpleSecurityObject */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x13,
+    /* NID_pilotOrganization */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x14,
+    /* NID_pilotDSA */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x15,
+    /* NID_qualityLabelledData */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x04,
+    0x16,
+    /* NID_userId */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x01,
+    /* NID_textEncodedORAddress */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x02,
+    /* NID_rfc822Mailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x03,
+    /* NID_info */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x04,
+    /* NID_favouriteDrink */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x05,
+    /* NID_roomNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x06,
+    /* NID_photo */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x07,
+    /* NID_userClass */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x08,
+    /* NID_host */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x09,
+    /* NID_manager */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0a,
+    /* NID_documentIdentifier */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0b,
+    /* NID_documentTitle */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0c,
+    /* NID_documentVersion */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0d,
+    /* NID_documentAuthor */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0e,
+    /* NID_documentLocation */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x0f,
+    /* NID_homeTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x14,
+    /* NID_secretary */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x15,
+    /* NID_otherMailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x16,
+    /* NID_lastModifiedTime */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x17,
+    /* NID_lastModifiedBy */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x18,
+    /* NID_aRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1a,
+    /* NID_pilotAttributeType27 */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1b,
+    /* NID_mXRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1c,
+    /* NID_nSRecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1d,
+    /* NID_sOARecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1e,
+    /* NID_cNAMERecord */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x1f,
+    /* NID_associatedDomain */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x25,
+    /* NID_associatedName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x26,
+    /* NID_homePostalAddress */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x27,
+    /* NID_personalTitle */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x28,
+    /* NID_mobileTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x29,
+    /* NID_pagerTelephoneNumber */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2a,
+    /* NID_friendlyCountryName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2b,
+    /* NID_organizationalStatus */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2d,
+    /* NID_janetMailbox */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2e,
+    /* NID_mailPreferenceOption */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x2f,
+    /* NID_buildingName */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x30,
+    /* NID_dSAQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x31,
+    /* NID_singleLevelQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x32,
+    /* NID_subtreeMinimumQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x33,
+    /* NID_subtreeMaximumQuality */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x34,
+    /* NID_personalSignature */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x35,
+    /* NID_dITRedirect */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x36,
+    /* NID_audio */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x37,
+    /* NID_documentPublisher */
+    0x09,
+    0x92,
+    0x26,
+    0x89,
+    0x93,
+    0xf2,
+    0x2c,
+    0x64,
+    0x01,
+    0x38,
+    /* NID_x500UniqueIdentifier */
+    0x55,
+    0x04,
+    0x2d,
+    /* NID_mime_mhs */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    /* NID_mime_mhs_headings */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    /* NID_mime_mhs_bodies */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x02,
+    /* NID_id_hex_partial_message */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_id_hex_multipart_message */
+    0x2b,
+    0x06,
+    0x01,
+    0x07,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_generationQualifier */
+    0x55,
+    0x04,
+    0x2c,
+    /* NID_pseudonym */
+    0x55,
+    0x04,
+    0x41,
+    /* NID_id_set */
+    0x67,
+    0x2a,
+    /* NID_set_ctype */
+    0x67,
+    0x2a,
+    0x00,
+    /* NID_set_msgExt */
+    0x67,
+    0x2a,
+    0x01,
+    /* NID_set_attr */
+    0x67,
+    0x2a,
+    0x03,
+    /* NID_set_policy */
+    0x67,
+    0x2a,
+    0x05,
+    /* NID_set_certExt */
+    0x67,
+    0x2a,
+    0x07,
+    /* NID_set_brand */
+    0x67,
+    0x2a,
+    0x08,
+    /* NID_setct_PANData */
+    0x67,
+    0x2a,
+    0x00,
+    0x00,
+    /* NID_setct_PANToken */
+    0x67,
+    0x2a,
+    0x00,
+    0x01,
+    /* NID_setct_PANOnly */
+    0x67,
+    0x2a,
+    0x00,
+    0x02,
+    /* NID_setct_OIData */
+    0x67,
+    0x2a,
+    0x00,
+    0x03,
+    /* NID_setct_PI */
+    0x67,
+    0x2a,
+    0x00,
+    0x04,
+    /* NID_setct_PIData */
+    0x67,
+    0x2a,
+    0x00,
+    0x05,
+    /* NID_setct_PIDataUnsigned */
+    0x67,
+    0x2a,
+    0x00,
+    0x06,
+    /* NID_setct_HODInput */
+    0x67,
+    0x2a,
+    0x00,
+    0x07,
+    /* NID_setct_AuthResBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x08,
+    /* NID_setct_AuthRevReqBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x09,
+    /* NID_setct_AuthRevResBaggage */
+    0x67,
+    0x2a,
+    0x00,
+    0x0a,
+    /* NID_setct_CapTokenSeq */
+    0x67,
+    0x2a,
+    0x00,
+    0x0b,
+    /* NID_setct_PInitResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x0c,
+    /* NID_setct_PI_TBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x0d,
+    /* NID_setct_PResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x0e,
+    /* NID_setct_AuthReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x10,
+    /* NID_setct_AuthResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x11,
+    /* NID_setct_AuthResTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x12,
+    /* NID_setct_AuthTokenTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x13,
+    /* NID_setct_CapTokenData */
+    0x67,
+    0x2a,
+    0x00,
+    0x14,
+    /* NID_setct_CapTokenTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x15,
+    /* NID_setct_AcqCardCodeMsg */
+    0x67,
+    0x2a,
+    0x00,
+    0x16,
+    /* NID_setct_AuthRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x17,
+    /* NID_setct_AuthRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x18,
+    /* NID_setct_AuthRevResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x19,
+    /* NID_setct_CapReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x1a,
+    /* NID_setct_CapReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x1b,
+    /* NID_setct_CapResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x1c,
+    /* NID_setct_CapRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x1d,
+    /* NID_setct_CapRevReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x1e,
+    /* NID_setct_CapRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x1f,
+    /* NID_setct_CredReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x20,
+    /* NID_setct_CredReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x21,
+    /* NID_setct_CredResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x22,
+    /* NID_setct_CredRevReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x23,
+    /* NID_setct_CredRevReqTBSX */
+    0x67,
+    0x2a,
+    0x00,
+    0x24,
+    /* NID_setct_CredRevResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x25,
+    /* NID_setct_PCertReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x26,
+    /* NID_setct_PCertResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x27,
+    /* NID_setct_BatchAdminReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x28,
+    /* NID_setct_BatchAdminResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x29,
+    /* NID_setct_CardCInitResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2a,
+    /* NID_setct_MeAqCInitResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2b,
+    /* NID_setct_RegFormResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2c,
+    /* NID_setct_CertReqData */
+    0x67,
+    0x2a,
+    0x00,
+    0x2d,
+    /* NID_setct_CertReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x2e,
+    /* NID_setct_CertResData */
+    0x67,
+    0x2a,
+    0x00,
+    0x2f,
+    /* NID_setct_CertInqReqTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x30,
+    /* NID_setct_ErrorTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x31,
+    /* NID_setct_PIDualSignedTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x32,
+    /* NID_setct_PIUnsignedTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x33,
+    /* NID_setct_AuthReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x34,
+    /* NID_setct_AuthResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x35,
+    /* NID_setct_AuthResTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x36,
+    /* NID_setct_AuthTokenTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x37,
+    /* NID_setct_CapTokenTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x38,
+    /* NID_setct_CapTokenTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x39,
+    /* NID_setct_AcqCardCodeMsgTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3a,
+    /* NID_setct_AuthRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3b,
+    /* NID_setct_AuthRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3c,
+    /* NID_setct_AuthRevResTBEB */
+    0x67,
+    0x2a,
+    0x00,
+    0x3d,
+    /* NID_setct_CapReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x3e,
+    /* NID_setct_CapReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x3f,
+    /* NID_setct_CapResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x40,
+    /* NID_setct_CapRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x41,
+    /* NID_setct_CapRevReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x42,
+    /* NID_setct_CapRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x43,
+    /* NID_setct_CredReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x44,
+    /* NID_setct_CredReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x45,
+    /* NID_setct_CredResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x46,
+    /* NID_setct_CredRevReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x47,
+    /* NID_setct_CredRevReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x48,
+    /* NID_setct_CredRevResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x49,
+    /* NID_setct_BatchAdminReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4a,
+    /* NID_setct_BatchAdminResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4b,
+    /* NID_setct_RegFormReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4c,
+    /* NID_setct_CertReqTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4d,
+    /* NID_setct_CertReqTBEX */
+    0x67,
+    0x2a,
+    0x00,
+    0x4e,
+    /* NID_setct_CertResTBE */
+    0x67,
+    0x2a,
+    0x00,
+    0x4f,
+    /* NID_setct_CRLNotificationTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x50,
+    /* NID_setct_CRLNotificationResTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x51,
+    /* NID_setct_BCIDistributionTBS */
+    0x67,
+    0x2a,
+    0x00,
+    0x52,
+    /* NID_setext_genCrypt */
+    0x67,
+    0x2a,
+    0x01,
+    0x01,
+    /* NID_setext_miAuth */
+    0x67,
+    0x2a,
+    0x01,
+    0x03,
+    /* NID_setext_pinSecure */
+    0x67,
+    0x2a,
+    0x01,
+    0x04,
+    /* NID_setext_pinAny */
+    0x67,
+    0x2a,
+    0x01,
+    0x05,
+    /* NID_setext_track2 */
+    0x67,
+    0x2a,
+    0x01,
+    0x07,
+    /* NID_setext_cv */
+    0x67,
+    0x2a,
+    0x01,
+    0x08,
+    /* NID_set_policy_root */
+    0x67,
+    0x2a,
+    0x05,
+    0x00,
+    /* NID_setCext_hashedRoot */
+    0x67,
+    0x2a,
+    0x07,
+    0x00,
+    /* NID_setCext_certType */
+    0x67,
+    0x2a,
+    0x07,
+    0x01,
+    /* NID_setCext_merchData */
+    0x67,
+    0x2a,
+    0x07,
+    0x02,
+    /* NID_setCext_cCertRequired */
+    0x67,
+    0x2a,
+    0x07,
+    0x03,
+    /* NID_setCext_tunneling */
+    0x67,
+    0x2a,
+    0x07,
+    0x04,
+    /* NID_setCext_setExt */
+    0x67,
+    0x2a,
+    0x07,
+    0x05,
+    /* NID_setCext_setQualf */
+    0x67,
+    0x2a,
+    0x07,
+    0x06,
+    /* NID_setCext_PGWYcapabilities */
+    0x67,
+    0x2a,
+    0x07,
+    0x07,
+    /* NID_setCext_TokenIdentifier */
+    0x67,
+    0x2a,
+    0x07,
+    0x08,
+    /* NID_setCext_Track2Data */
+    0x67,
+    0x2a,
+    0x07,
+    0x09,
+    /* NID_setCext_TokenType */
+    0x67,
+    0x2a,
+    0x07,
+    0x0a,
+    /* NID_setCext_IssuerCapabilities */
+    0x67,
+    0x2a,
+    0x07,
+    0x0b,
+    /* NID_setAttr_Cert */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    /* NID_setAttr_PGWYcap */
+    0x67,
+    0x2a,
+    0x03,
+    0x01,
+    /* NID_setAttr_TokenType */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    /* NID_setAttr_IssCap */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    /* NID_set_rootKeyThumb */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    0x00,
+    /* NID_set_addPolicy */
+    0x67,
+    0x2a,
+    0x03,
+    0x00,
+    0x01,
+    /* NID_setAttr_Token_EMV */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    0x01,
+    /* NID_setAttr_Token_B0Prime */
+    0x67,
+    0x2a,
+    0x03,
+    0x02,
+    0x02,
+    /* NID_setAttr_IssCap_CVM */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x03,
+    /* NID_setAttr_IssCap_T2 */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    /* NID_setAttr_IssCap_Sig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    /* NID_setAttr_GenCryptgrm */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x03,
+    0x01,
+    /* NID_setAttr_T2Enc */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    0x01,
+    /* NID_setAttr_T2cleartxt */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x04,
+    0x02,
+    /* NID_setAttr_TokICCsig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    0x01,
+    /* NID_setAttr_SecDevSig */
+    0x67,
+    0x2a,
+    0x03,
+    0x03,
+    0x05,
+    0x02,
+    /* NID_set_brand_IATA_ATA */
+    0x67,
+    0x2a,
+    0x08,
+    0x01,
+    /* NID_set_brand_Diners */
+    0x67,
+    0x2a,
+    0x08,
+    0x1e,
+    /* NID_set_brand_AmericanExpress */
+    0x67,
+    0x2a,
+    0x08,
+    0x22,
+    /* NID_set_brand_JCB */
+    0x67,
+    0x2a,
+    0x08,
+    0x23,
+    /* NID_set_brand_Visa */
+    0x67,
+    0x2a,
+    0x08,
+    0x04,
+    /* NID_set_brand_MasterCard */
+    0x67,
+    0x2a,
+    0x08,
+    0x05,
+    /* NID_set_brand_Novus */
+    0x67,
+    0x2a,
+    0x08,
+    0xae,
+    0x7b,
+    /* NID_des_cdmf */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x03,
+    0x0a,
+    /* NID_rsaOAEPEncryptionSET */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x06,
+    /* NID_international_organizations */
+    0x67,
+    /* NID_ms_smartcard_login */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x14,
+    0x02,
+    0x02,
+    /* NID_ms_upn */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x14,
+    0x02,
+    0x03,
+    /* NID_streetAddress */
+    0x55,
+    0x04,
+    0x09,
+    /* NID_postalCode */
+    0x55,
+    0x04,
+    0x11,
+    /* NID_id_ppl */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    /* NID_proxyCertInfo */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x01,
+    0x0e,
+    /* NID_id_ppl_anyLanguage */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x00,
+    /* NID_id_ppl_inheritAll */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x01,
+    /* NID_name_constraints */
+    0x55,
+    0x1d,
+    0x1e,
+    /* NID_Independent */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x15,
+    0x02,
+    /* NID_sha256WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0b,
+    /* NID_sha384WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0c,
+    /* NID_sha512WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0d,
+    /* NID_sha224WithRSAEncryption */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0e,
+    /* NID_sha256 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x01,
+    /* NID_sha384 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x02,
+    /* NID_sha512 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x03,
+    /* NID_sha224 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x02,
+    0x04,
+    /* NID_identified_organization */
+    0x2b,
+    /* NID_certicom_arc */
+    0x2b,
+    0x81,
+    0x04,
+    /* NID_wap */
+    0x67,
+    0x2b,
+    /* NID_wap_wsg */
+    0x67,
+    0x2b,
+    0x01,
+    /* NID_X9_62_id_characteristic_two_basis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    /* NID_X9_62_onBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x01,
+    /* NID_X9_62_tpBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x02,
+    /* NID_X9_62_ppBasis */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x01,
+    0x02,
+    0x03,
+    0x03,
+    /* NID_X9_62_c2pnb163v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x01,
+    /* NID_X9_62_c2pnb163v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x02,
+    /* NID_X9_62_c2pnb163v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x03,
+    /* NID_X9_62_c2pnb176v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x04,
+    /* NID_X9_62_c2tnb191v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x05,
+    /* NID_X9_62_c2tnb191v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x06,
+    /* NID_X9_62_c2tnb191v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x07,
+    /* NID_X9_62_c2onb191v4 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x08,
+    /* NID_X9_62_c2onb191v5 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x09,
+    /* NID_X9_62_c2pnb208w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0a,
+    /* NID_X9_62_c2tnb239v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0b,
+    /* NID_X9_62_c2tnb239v2 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0c,
+    /* NID_X9_62_c2tnb239v3 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0d,
+    /* NID_X9_62_c2onb239v4 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0e,
+    /* NID_X9_62_c2onb239v5 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x0f,
+    /* NID_X9_62_c2pnb272w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x10,
+    /* NID_X9_62_c2pnb304w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x11,
+    /* NID_X9_62_c2tnb359v1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x12,
+    /* NID_X9_62_c2pnb368w1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x13,
+    /* NID_X9_62_c2tnb431r1 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x03,
+    0x00,
+    0x14,
+    /* NID_secp112r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x06,
+    /* NID_secp112r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x07,
+    /* NID_secp128r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1c,
+    /* NID_secp128r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1d,
+    /* NID_secp160k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x09,
+    /* NID_secp160r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x08,
+    /* NID_secp160r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1e,
+    /* NID_secp192k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1f,
+    /* NID_secp224k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x20,
+    /* NID_secp224r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x21,
+    /* NID_secp256k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x0a,
+    /* NID_secp384r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x22,
+    /* NID_secp521r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x23,
+    /* NID_sect113r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x04,
+    /* NID_sect113r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x05,
+    /* NID_sect131r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x16,
+    /* NID_sect131r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x17,
+    /* NID_sect163k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x01,
+    /* NID_sect163r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x02,
+    /* NID_sect163r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x0f,
+    /* NID_sect193r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x18,
+    /* NID_sect193r2 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x19,
+    /* NID_sect233k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1a,
+    /* NID_sect233r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x1b,
+    /* NID_sect239k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x03,
+    /* NID_sect283k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x10,
+    /* NID_sect283r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x11,
+    /* NID_sect409k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x24,
+    /* NID_sect409r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x25,
+    /* NID_sect571k1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x26,
+    /* NID_sect571r1 */
+    0x2b,
+    0x81,
+    0x04,
+    0x00,
+    0x27,
+    /* NID_wap_wsg_idm_ecid_wtls1 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x01,
+    /* NID_wap_wsg_idm_ecid_wtls3 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x03,
+    /* NID_wap_wsg_idm_ecid_wtls4 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x04,
+    /* NID_wap_wsg_idm_ecid_wtls5 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x05,
+    /* NID_wap_wsg_idm_ecid_wtls6 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x06,
+    /* NID_wap_wsg_idm_ecid_wtls7 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x07,
+    /* NID_wap_wsg_idm_ecid_wtls8 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x08,
+    /* NID_wap_wsg_idm_ecid_wtls9 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x09,
+    /* NID_wap_wsg_idm_ecid_wtls10 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0a,
+    /* NID_wap_wsg_idm_ecid_wtls11 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0b,
+    /* NID_wap_wsg_idm_ecid_wtls12 */
+    0x67,
+    0x2b,
+    0x01,
+    0x04,
+    0x0c,
+    /* NID_any_policy */
+    0x55,
+    0x1d,
+    0x20,
+    0x00,
+    /* NID_policy_mappings */
+    0x55,
+    0x1d,
+    0x21,
+    /* NID_inhibit_any_policy */
+    0x55,
+    0x1d,
+    0x36,
+    /* NID_camellia_128_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_camellia_192_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_camellia_256_cbc */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_camellia_128_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x01,
+    /* NID_camellia_192_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x15,
+    /* NID_camellia_256_ecb */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x29,
+    /* NID_camellia_128_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x04,
+    /* NID_camellia_192_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x18,
+    /* NID_camellia_256_cfb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x2c,
+    /* NID_camellia_128_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x03,
+    /* NID_camellia_192_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x17,
+    /* NID_camellia_256_ofb128 */
+    0x03,
+    0xa2,
+    0x31,
+    0x05,
+    0x03,
+    0x01,
+    0x09,
+    0x2b,
+    /* NID_subject_directory_attributes */
+    0x55,
+    0x1d,
+    0x09,
+    /* NID_issuing_distribution_point */
+    0x55,
+    0x1d,
+    0x1c,
+    /* NID_certificate_issuer */
+    0x55,
+    0x1d,
+    0x1d,
+    /* NID_kisa */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    /* NID_seed_ecb */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x03,
+    /* NID_seed_cbc */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x04,
+    /* NID_seed_ofb128 */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x06,
+    /* NID_seed_cfb128 */
+    0x2a,
+    0x83,
+    0x1a,
+    0x8c,
+    0x9a,
+    0x44,
+    0x01,
+    0x05,
+    /* NID_hmac_md5 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x08,
+    0x01,
+    0x01,
+    /* NID_hmac_sha1 */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x08,
+    0x01,
+    0x02,
+    /* NID_id_PasswordBasedMAC */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x0d,
+    /* NID_id_DHBasedMac */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf6,
+    0x7d,
+    0x07,
+    0x42,
+    0x1e,
+    /* NID_id_it_suppLangTags */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x04,
+    0x10,
+    /* NID_caRepository */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x30,
+    0x05,
+    /* NID_id_smime_ct_compressedData */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x09,
+    /* NID_id_ct_asciiTextWithCRLF */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x01,
+    0x1b,
+    /* NID_id_aes128_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x05,
+    /* NID_id_aes192_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x19,
+    /* NID_id_aes256_wrap */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2d,
+    /* NID_ecdsa_with_Recommended */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x02,
+    /* NID_ecdsa_with_Specified */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    /* NID_ecdsa_with_SHA224 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x01,
+    /* NID_ecdsa_with_SHA256 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x02,
+    /* NID_ecdsa_with_SHA384 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x03,
+    /* NID_ecdsa_with_SHA512 */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3d,
+    0x04,
+    0x03,
+    0x04,
+    /* NID_hmacWithMD5 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x06,
+    /* NID_hmacWithSHA224 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x08,
+    /* NID_hmacWithSHA256 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x09,
+    /* NID_hmacWithSHA384 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x0a,
+    /* NID_hmacWithSHA512 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x02,
+    0x0b,
+    /* NID_dsa_with_SHA224 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x03,
+    0x01,
+    /* NID_dsa_with_SHA256 */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x03,
+    0x02,
+    /* NID_whirlpool */
+    0x28,
+    0xcf,
+    0x06,
+    0x03,
+    0x00,
+    0x37,
+    /* NID_cryptopro */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    /* NID_cryptocom */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    /* NID_id_GostR3411_94_with_GostR3410_2001 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x03,
+    /* NID_id_GostR3411_94_with_GostR3410_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x04,
+    /* NID_id_GostR3411_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x09,
+    /* NID_id_HMACGostR3411_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0a,
+    /* NID_id_GostR3410_2001 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x13,
+    /* NID_id_GostR3410_94 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    /* NID_id_Gost28147_89 */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x15,
+    /* NID_id_Gost28147_89_MAC */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x16,
+    /* NID_id_GostR3411_94_prf */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x17,
+    /* NID_id_GostR3410_2001DH */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x62,
+    /* NID_id_GostR3410_94DH */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x63,
+    /* NID_id_Gost28147_89_CryptoPro_KeyMeshing */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0e,
+    0x01,
+    /* NID_id_Gost28147_89_None_KeyMeshing */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x0e,
+    0x00,
+    /* NID_id_GostR3411_94_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1e,
+    0x00,
+    /* NID_id_GostR3411_94_CryptoProParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1e,
+    0x01,
+    /* NID_id_Gost28147_89_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x00,
+    /* NID_id_Gost28147_89_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x01,
+    /* NID_id_Gost28147_89_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x02,
+    /* NID_id_Gost28147_89_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x03,
+    /* NID_id_Gost28147_89_CryptoPro_D_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x04,
+    /* NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x05,
+    /* NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x06,
+    /* NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x1f,
+    0x07,
+    /* NID_id_GostR3410_94_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x00,
+    /* NID_id_GostR3410_94_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x02,
+    /* NID_id_GostR3410_94_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x03,
+    /* NID_id_GostR3410_94_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x04,
+    /* NID_id_GostR3410_94_CryptoPro_D_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x20,
+    0x05,
+    /* NID_id_GostR3410_94_CryptoPro_XchA_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x01,
+    /* NID_id_GostR3410_94_CryptoPro_XchB_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x02,
+    /* NID_id_GostR3410_94_CryptoPro_XchC_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x21,
+    0x03,
+    /* NID_id_GostR3410_2001_TestParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x00,
+    /* NID_id_GostR3410_2001_CryptoPro_A_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x01,
+    /* NID_id_GostR3410_2001_CryptoPro_B_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x02,
+    /* NID_id_GostR3410_2001_CryptoPro_C_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x23,
+    0x03,
+    /* NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x24,
+    0x00,
+    /* NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x24,
+    0x01,
+    /* NID_id_GostR3410_94_a */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x01,
+    /* NID_id_GostR3410_94_aBis */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x02,
+    /* NID_id_GostR3410_94_b */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x03,
+    /* NID_id_GostR3410_94_bBis */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x02,
+    0x14,
+    0x04,
+    /* NID_id_Gost28147_89_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x06,
+    0x01,
+    /* NID_id_GostR3410_94_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x05,
+    0x03,
+    /* NID_id_GostR3410_2001_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x05,
+    0x04,
+    /* NID_id_GostR3411_94_with_GostR3410_94_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x03,
+    0x03,
+    /* NID_id_GostR3411_94_with_GostR3410_2001_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x03,
+    0x04,
+    /* NID_id_GostR3410_2001_ParamSet_cc */
+    0x2a,
+    0x85,
+    0x03,
+    0x02,
+    0x09,
+    0x01,
+    0x08,
+    0x01,
+    /* NID_LocalKeySet */
+    0x2b,
+    0x06,
+    0x01,
+    0x04,
+    0x01,
+    0x82,
+    0x37,
+    0x11,
+    0x02,
+    /* NID_freshest_crl */
+    0x55,
+    0x1d,
+    0x2e,
+    /* NID_id_on_permanentIdentifier */
+    0x2b,
+    0x06,
+    0x01,
+    0x05,
+    0x05,
+    0x07,
+    0x08,
+    0x03,
+    /* NID_searchGuide */
+    0x55,
+    0x04,
+    0x0e,
+    /* NID_businessCategory */
+    0x55,
+    0x04,
+    0x0f,
+    /* NID_postalAddress */
+    0x55,
+    0x04,
+    0x10,
+    /* NID_postOfficeBox */
+    0x55,
+    0x04,
+    0x12,
+    /* NID_physicalDeliveryOfficeName */
+    0x55,
+    0x04,
+    0x13,
+    /* NID_telephoneNumber */
+    0x55,
+    0x04,
+    0x14,
+    /* NID_telexNumber */
+    0x55,
+    0x04,
+    0x15,
+    /* NID_teletexTerminalIdentifier */
+    0x55,
+    0x04,
+    0x16,
+    /* NID_facsimileTelephoneNumber */
+    0x55,
+    0x04,
+    0x17,
+    /* NID_x121Address */
+    0x55,
+    0x04,
+    0x18,
+    /* NID_internationaliSDNNumber */
+    0x55,
+    0x04,
+    0x19,
+    /* NID_registeredAddress */
+    0x55,
+    0x04,
+    0x1a,
+    /* NID_destinationIndicator */
+    0x55,
+    0x04,
+    0x1b,
+    /* NID_preferredDeliveryMethod */
+    0x55,
+    0x04,
+    0x1c,
+    /* NID_presentationAddress */
+    0x55,
+    0x04,
+    0x1d,
+    /* NID_supportedApplicationContext */
+    0x55,
+    0x04,
+    0x1e,
+    /* NID_member */
+    0x55,
+    0x04,
+    0x1f,
+    /* NID_owner */
+    0x55,
+    0x04,
+    0x20,
+    /* NID_roleOccupant */
+    0x55,
+    0x04,
+    0x21,
+    /* NID_seeAlso */
+    0x55,
+    0x04,
+    0x22,
+    /* NID_userPassword */
+    0x55,
+    0x04,
+    0x23,
+    /* NID_userCertificate */
+    0x55,
+    0x04,
+    0x24,
+    /* NID_cACertificate */
+    0x55,
+    0x04,
+    0x25,
+    /* NID_authorityRevocationList */
+    0x55,
+    0x04,
+    0x26,
+    /* NID_certificateRevocationList */
+    0x55,
+    0x04,
+    0x27,
+    /* NID_crossCertificatePair */
+    0x55,
+    0x04,
+    0x28,
+    /* NID_enhancedSearchGuide */
+    0x55,
+    0x04,
+    0x2f,
+    /* NID_protocolInformation */
+    0x55,
+    0x04,
+    0x30,
+    /* NID_distinguishedName */
+    0x55,
+    0x04,
+    0x31,
+    /* NID_uniqueMember */
+    0x55,
+    0x04,
+    0x32,
+    /* NID_houseIdentifier */
+    0x55,
+    0x04,
+    0x33,
+    /* NID_supportedAlgorithms */
+    0x55,
+    0x04,
+    0x34,
+    /* NID_deltaRevocationList */
+    0x55,
+    0x04,
+    0x35,
+    /* NID_dmdName */
+    0x55,
+    0x04,
+    0x36,
+    /* NID_id_alg_PWRI_KEK */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x09,
+    0x10,
+    0x03,
+    0x09,
+    /* NID_aes_128_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x06,
+    /* NID_aes_128_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x07,
+    /* NID_id_aes128_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x08,
+    /* NID_aes_192_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1a,
+    /* NID_aes_192_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1b,
+    /* NID_id_aes192_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x1c,
+    /* NID_aes_256_gcm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2e,
+    /* NID_aes_256_ccm */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x2f,
+    /* NID_id_aes256_wrap_pad */
+    0x60,
+    0x86,
+    0x48,
+    0x01,
+    0x65,
+    0x03,
+    0x04,
+    0x01,
+    0x30,
+    /* NID_id_camellia128_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x02,
+    /* NID_id_camellia192_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x03,
+    /* NID_id_camellia256_wrap */
+    0x2a,
+    0x83,
+    0x08,
+    0x8c,
+    0x9a,
+    0x4b,
+    0x3d,
+    0x01,
+    0x01,
+    0x03,
+    0x04,
+    /* NID_anyExtendedKeyUsage */
+    0x55,
+    0x1d,
+    0x25,
+    0x00,
+    /* NID_mgf1 */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x08,
+    /* NID_rsassaPss */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x0a,
+    /* NID_rsaesOaep */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x07,
+    /* NID_dhpublicnumber */
+    0x2a,
+    0x86,
+    0x48,
+    0xce,
+    0x3e,
+    0x02,
+    0x01,
+    /* NID_brainpoolP160r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x01,
+    /* NID_brainpoolP160t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x02,
+    /* NID_brainpoolP192r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x03,
+    /* NID_brainpoolP192t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x04,
+    /* NID_brainpoolP224r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x05,
+    /* NID_brainpoolP224t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x06,
+    /* NID_brainpoolP256r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x07,
+    /* NID_brainpoolP256t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x08,
+    /* NID_brainpoolP320r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x09,
+    /* NID_brainpoolP320t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0a,
+    /* NID_brainpoolP384r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0b,
+    /* NID_brainpoolP384t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0c,
+    /* NID_brainpoolP512r1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0d,
+    /* NID_brainpoolP512t1 */
+    0x2b,
+    0x24,
+    0x03,
+    0x03,
+    0x02,
+    0x08,
+    0x01,
+    0x01,
+    0x0e,
+    /* NID_pSpecified */
+    0x2a,
+    0x86,
+    0x48,
+    0x86,
+    0xf7,
+    0x0d,
+    0x01,
+    0x01,
+    0x09,
+    /* NID_dhSinglePass_stdDH_sha1kdf_scheme */
+    0x2b,
+    0x81,
+    0x05,
+    0x10,
+    0x86,
+    0x48,
+    0x3f,
+    0x00,
+    0x02,
+    /* NID_dhSinglePass_stdDH_sha224kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x00,
+    /* NID_dhSinglePass_stdDH_sha256kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x01,
+    /* NID_dhSinglePass_stdDH_sha384kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x02,
+    /* NID_dhSinglePass_stdDH_sha512kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0b,
+    0x03,
+    /* NID_dhSinglePass_cofactorDH_sha1kdf_scheme */
+    0x2b,
+    0x81,
+    0x05,
+    0x10,
+    0x86,
+    0x48,
+    0x3f,
+    0x00,
+    0x03,
+    /* NID_dhSinglePass_cofactorDH_sha224kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x00,
+    /* NID_dhSinglePass_cofactorDH_sha256kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x01,
+    /* NID_dhSinglePass_cofactorDH_sha384kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x02,
+    /* NID_dhSinglePass_cofactorDH_sha512kdf_scheme */
+    0x2b,
+    0x81,
+    0x04,
+    0x01,
+    0x0e,
+    0x03,
+    /* NID_X25519 */
+    0x2b,
+    0x65,
+    0x6e,
+    /* NID_ED25519 */
+    0x2b,
+    0x65,
+    0x70,
+    /* NID_ED448 */
+    0x2b,
+    0x65,
+    0x71,
+    /* NID_X448 */
+    0x2b,
+    0x65,
+    0x6f,
+};
+
+static const ASN1_OBJECT kObjects[NUM_NID] = {
+    {"UNDEF", "undefined", NID_undef, 0, NULL, 0},
+    {"rsadsi", "RSA Data Security, Inc.", NID_rsadsi, 6, &kObjectData[0], 0},
+    {"pkcs", "RSA Data Security, Inc. PKCS", NID_pkcs, 7, &kObjectData[6], 0},
+    {"MD2", "md2", NID_md2, 8, &kObjectData[13], 0},
+    {"MD5", "md5", NID_md5, 8, &kObjectData[21], 0},
+    {"RC4", "rc4", NID_rc4, 8, &kObjectData[29], 0},
+    {"rsaEncryption", "rsaEncryption", NID_rsaEncryption, 9, &kObjectData[37],
+     0},
+    {"RSA-MD2", "md2WithRSAEncryption", NID_md2WithRSAEncryption, 9,
+     &kObjectData[46], 0},
+    {"RSA-MD5", "md5WithRSAEncryption", NID_md5WithRSAEncryption, 9,
+     &kObjectData[55], 0},
+    {"PBE-MD2-DES", "pbeWithMD2AndDES-CBC", NID_pbeWithMD2AndDES_CBC, 9,
+     &kObjectData[64], 0},
+    {"PBE-MD5-DES", "pbeWithMD5AndDES-CBC", NID_pbeWithMD5AndDES_CBC, 9,
+     &kObjectData[73], 0},
+    {"X500", "directory services (X.500)", NID_X500, 1, &kObjectData[82], 0},
+    {"X509", "X509", NID_X509, 2, &kObjectData[83], 0},
+    {"CN", "commonName", NID_commonName, 3, &kObjectData[85], 0},
+    {"C", "countryName", NID_countryName, 3, &kObjectData[88], 0},
+    {"L", "localityName", NID_localityName, 3, &kObjectData[91], 0},
+    {"ST", "stateOrProvinceName", NID_stateOrProvinceName, 3, &kObjectData[94],
+     0},
+    {"O", "organizationName", NID_organizationName, 3, &kObjectData[97], 0},
+    {"OU", "organizationalUnitName", NID_organizationalUnitName, 3,
+     &kObjectData[100], 0},
+    {"RSA", "rsa", NID_rsa, 4, &kObjectData[103], 0},
+    {"pkcs7", "pkcs7", NID_pkcs7, 8, &kObjectData[107], 0},
+    {"pkcs7-data", "pkcs7-data", NID_pkcs7_data, 9, &kObjectData[115], 0},
+    {"pkcs7-signedData", "pkcs7-signedData", NID_pkcs7_signed, 9,
+     &kObjectData[124], 0},
+    {"pkcs7-envelopedData", "pkcs7-envelopedData", NID_pkcs7_enveloped, 9,
+     &kObjectData[133], 0},
+    {"pkcs7-signedAndEnvelopedData", "pkcs7-signedAndEnvelopedData",
+     NID_pkcs7_signedAndEnveloped, 9, &kObjectData[142], 0},
+    {"pkcs7-digestData", "pkcs7-digestData", NID_pkcs7_digest, 9,
+     &kObjectData[151], 0},
+    {"pkcs7-encryptedData", "pkcs7-encryptedData", NID_pkcs7_encrypted, 9,
+     &kObjectData[160], 0},
+    {"pkcs3", "pkcs3", NID_pkcs3, 8, &kObjectData[169], 0},
+    {"dhKeyAgreement", "dhKeyAgreement", NID_dhKeyAgreement, 9,
+     &kObjectData[177], 0},
+    {"DES-ECB", "des-ecb", NID_des_ecb, 5, &kObjectData[186], 0},
+    {"DES-CFB", "des-cfb", NID_des_cfb64, 5, &kObjectData[191], 0},
+    {"DES-CBC", "des-cbc", NID_des_cbc, 5, &kObjectData[196], 0},
+    {"DES-EDE", "des-ede", NID_des_ede_ecb, 5, &kObjectData[201], 0},
+    {"DES-EDE3", "des-ede3", NID_des_ede3_ecb, 0, NULL, 0},
+    {"IDEA-CBC", "idea-cbc", NID_idea_cbc, 11, &kObjectData[206], 0},
+    {"IDEA-CFB", "idea-cfb", NID_idea_cfb64, 0, NULL, 0},
+    {"IDEA-ECB", "idea-ecb", NID_idea_ecb, 0, NULL, 0},
+    {"RC2-CBC", "rc2-cbc", NID_rc2_cbc, 8, &kObjectData[217], 0},
+    {"RC2-ECB", "rc2-ecb", NID_rc2_ecb, 0, NULL, 0},
+    {"RC2-CFB", "rc2-cfb", NID_rc2_cfb64, 0, NULL, 0},
+    {"RC2-OFB", "rc2-ofb", NID_rc2_ofb64, 0, NULL, 0},
+    {"SHA", "sha", NID_sha, 5, &kObjectData[225], 0},
+    {"RSA-SHA", "shaWithRSAEncryption", NID_shaWithRSAEncryption, 5,
+     &kObjectData[230], 0},
+    {"DES-EDE-CBC", "des-ede-cbc", NID_des_ede_cbc, 0, NULL, 0},
+    {"DES-EDE3-CBC", "des-ede3-cbc", NID_des_ede3_cbc, 8, &kObjectData[235], 0},
+    {"DES-OFB", "des-ofb", NID_des_ofb64, 5, &kObjectData[243], 0},
+    {"IDEA-OFB", "idea-ofb", NID_idea_ofb64, 0, NULL, 0},
+    {"pkcs9", "pkcs9", NID_pkcs9, 8, &kObjectData[248], 0},
+    {"emailAddress", "emailAddress", NID_pkcs9_emailAddress, 9,
+     &kObjectData[256], 0},
+    {"unstructuredName", "unstructuredName", NID_pkcs9_unstructuredName, 9,
+     &kObjectData[265], 0},
+    {"contentType", "contentType", NID_pkcs9_contentType, 9, &kObjectData[274],
+     0},
+    {"messageDigest", "messageDigest", NID_pkcs9_messageDigest, 9,
+     &kObjectData[283], 0},
+    {"signingTime", "signingTime", NID_pkcs9_signingTime, 9, &kObjectData[292],
+     0},
+    {"countersignature", "countersignature", NID_pkcs9_countersignature, 9,
+     &kObjectData[301], 0},
+    {"challengePassword", "challengePassword", NID_pkcs9_challengePassword, 9,
+     &kObjectData[310], 0},
+    {"unstructuredAddress", "unstructuredAddress",
+     NID_pkcs9_unstructuredAddress, 9, &kObjectData[319], 0},
+    {"extendedCertificateAttributes", "extendedCertificateAttributes",
+     NID_pkcs9_extCertAttributes, 9, &kObjectData[328], 0},
+    {"Netscape", "Netscape Communications Corp.", NID_netscape, 7,
+     &kObjectData[337], 0},
+    {"nsCertExt", "Netscape Certificate Extension", NID_netscape_cert_extension,
+     8, &kObjectData[344], 0},
+    {"nsDataType", "Netscape Data Type", NID_netscape_data_type, 8,
+     &kObjectData[352], 0},
+    {"DES-EDE-CFB", "des-ede-cfb", NID_des_ede_cfb64, 0, NULL, 0},
+    {"DES-EDE3-CFB", "des-ede3-cfb", NID_des_ede3_cfb64, 0, NULL, 0},
+    {"DES-EDE-OFB", "des-ede-ofb", NID_des_ede_ofb64, 0, NULL, 0},
+    {"DES-EDE3-OFB", "des-ede3-ofb", NID_des_ede3_ofb64, 0, NULL, 0},
+    {"SHA1", "sha1", NID_sha1, 5, &kObjectData[360], 0},
+    {"RSA-SHA1", "sha1WithRSAEncryption", NID_sha1WithRSAEncryption, 9,
+     &kObjectData[365], 0},
+    {"DSA-SHA", "dsaWithSHA", NID_dsaWithSHA, 5, &kObjectData[374], 0},
+    {"DSA-old", "dsaEncryption-old", NID_dsa_2, 5, &kObjectData[379], 0},
+    {"PBE-SHA1-RC2-64", "pbeWithSHA1AndRC2-CBC", NID_pbeWithSHA1AndRC2_CBC, 9,
+     &kObjectData[384], 0},
+    {"PBKDF2", "PBKDF2", NID_id_pbkdf2, 9, &kObjectData[393], 0},
+    {"DSA-SHA1-old", "dsaWithSHA1-old", NID_dsaWithSHA1_2, 5, &kObjectData[402],
+     0},
+    {"nsCertType", "Netscape Cert Type", NID_netscape_cert_type, 9,
+     &kObjectData[407], 0},
+    {"nsBaseUrl", "Netscape Base Url", NID_netscape_base_url, 9,
+     &kObjectData[416], 0},
+    {"nsRevocationUrl", "Netscape Revocation Url", NID_netscape_revocation_url,
+     9, &kObjectData[425], 0},
+    {"nsCaRevocationUrl", "Netscape CA Revocation Url",
+     NID_netscape_ca_revocation_url, 9, &kObjectData[434], 0},
+    {"nsRenewalUrl", "Netscape Renewal Url", NID_netscape_renewal_url, 9,
+     &kObjectData[443], 0},
+    {"nsCaPolicyUrl", "Netscape CA Policy Url", NID_netscape_ca_policy_url, 9,
+     &kObjectData[452], 0},
+    {"nsSslServerName", "Netscape SSL Server Name",
+     NID_netscape_ssl_server_name, 9, &kObjectData[461], 0},
+    {"nsComment", "Netscape Comment", NID_netscape_comment, 9,
+     &kObjectData[470], 0},
+    {"nsCertSequence", "Netscape Certificate Sequence",
+     NID_netscape_cert_sequence, 9, &kObjectData[479], 0},
+    {"DESX-CBC", "desx-cbc", NID_desx_cbc, 0, NULL, 0},
+    {"id-ce", "id-ce", NID_id_ce, 2, &kObjectData[488], 0},
+    {"subjectKeyIdentifier", "X509v3 Subject Key Identifier",
+     NID_subject_key_identifier, 3, &kObjectData[490], 0},
+    {"keyUsage", "X509v3 Key Usage", NID_key_usage, 3, &kObjectData[493], 0},
+    {"privateKeyUsagePeriod", "X509v3 Private Key Usage Period",
+     NID_private_key_usage_period, 3, &kObjectData[496], 0},
+    {"subjectAltName", "X509v3 Subject Alternative Name", NID_subject_alt_name,
+     3, &kObjectData[499], 0},
+    {"issuerAltName", "X509v3 Issuer Alternative Name", NID_issuer_alt_name, 3,
+     &kObjectData[502], 0},
+    {"basicConstraints", "X509v3 Basic Constraints", NID_basic_constraints, 3,
+     &kObjectData[505], 0},
+    {"crlNumber", "X509v3 CRL Number", NID_crl_number, 3, &kObjectData[508], 0},
+    {"certificatePolicies", "X509v3 Certificate Policies",
+     NID_certificate_policies, 3, &kObjectData[511], 0},
+    {"authorityKeyIdentifier", "X509v3 Authority Key Identifier",
+     NID_authority_key_identifier, 3, &kObjectData[514], 0},
+    {"BF-CBC", "bf-cbc", NID_bf_cbc, 9, &kObjectData[517], 0},
+    {"BF-ECB", "bf-ecb", NID_bf_ecb, 0, NULL, 0},
+    {"BF-CFB", "bf-cfb", NID_bf_cfb64, 0, NULL, 0},
+    {"BF-OFB", "bf-ofb", NID_bf_ofb64, 0, NULL, 0},
+    {"MDC2", "mdc2", NID_mdc2, 4, &kObjectData[526], 0},
+    {"RSA-MDC2", "mdc2WithRSA", NID_mdc2WithRSA, 4, &kObjectData[530], 0},
+    {"RC4-40", "rc4-40", NID_rc4_40, 0, NULL, 0},
+    {"RC2-40-CBC", "rc2-40-cbc", NID_rc2_40_cbc, 0, NULL, 0},
+    {"GN", "givenName", NID_givenName, 3, &kObjectData[534], 0},
+    {"SN", "surname", NID_surname, 3, &kObjectData[537], 0},
+    {"initials", "initials", NID_initials, 3, &kObjectData[540], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"crlDistributionPoints", "X509v3 CRL Distribution Points",
+     NID_crl_distribution_points, 3, &kObjectData[543], 0},
+    {"RSA-NP-MD5", "md5WithRSA", NID_md5WithRSA, 5, &kObjectData[546], 0},
+    {"serialNumber", "serialNumber", NID_serialNumber, 3, &kObjectData[551], 0},
+    {"title", "title", NID_title, 3, &kObjectData[554], 0},
+    {"description", "description", NID_description, 3, &kObjectData[557], 0},
+    {"CAST5-CBC", "cast5-cbc", NID_cast5_cbc, 9, &kObjectData[560], 0},
+    {"CAST5-ECB", "cast5-ecb", NID_cast5_ecb, 0, NULL, 0},
+    {"CAST5-CFB", "cast5-cfb", NID_cast5_cfb64, 0, NULL, 0},
+    {"CAST5-OFB", "cast5-ofb", NID_cast5_ofb64, 0, NULL, 0},
+    {"pbeWithMD5AndCast5CBC", "pbeWithMD5AndCast5CBC",
+     NID_pbeWithMD5AndCast5_CBC, 9, &kObjectData[569], 0},
+    {"DSA-SHA1", "dsaWithSHA1", NID_dsaWithSHA1, 7, &kObjectData[578], 0},
+    {"MD5-SHA1", "md5-sha1", NID_md5_sha1, 0, NULL, 0},
+    {"RSA-SHA1-2", "sha1WithRSA", NID_sha1WithRSA, 5, &kObjectData[585], 0},
+    {"DSA", "dsaEncryption", NID_dsa, 7, &kObjectData[590], 0},
+    {"RIPEMD160", "ripemd160", NID_ripemd160, 5, &kObjectData[597], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"RSA-RIPEMD160", "ripemd160WithRSA", NID_ripemd160WithRSA, 6,
+     &kObjectData[602], 0},
+    {"RC5-CBC", "rc5-cbc", NID_rc5_cbc, 8, &kObjectData[608], 0},
+    {"RC5-ECB", "rc5-ecb", NID_rc5_ecb, 0, NULL, 0},
+    {"RC5-CFB", "rc5-cfb", NID_rc5_cfb64, 0, NULL, 0},
+    {"RC5-OFB", "rc5-ofb", NID_rc5_ofb64, 0, NULL, 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"ZLIB", "zlib compression", NID_zlib_compression, 11, &kObjectData[616],
+     0},
+    {"extendedKeyUsage", "X509v3 Extended Key Usage", NID_ext_key_usage, 3,
+     &kObjectData[627], 0},
+    {"PKIX", "PKIX", NID_id_pkix, 6, &kObjectData[630], 0},
+    {"id-kp", "id-kp", NID_id_kp, 7, &kObjectData[636], 0},
+    {"serverAuth", "TLS Web Server Authentication", NID_server_auth, 8,
+     &kObjectData[643], 0},
+    {"clientAuth", "TLS Web Client Authentication", NID_client_auth, 8,
+     &kObjectData[651], 0},
+    {"codeSigning", "Code Signing", NID_code_sign, 8, &kObjectData[659], 0},
+    {"emailProtection", "E-mail Protection", NID_email_protect, 8,
+     &kObjectData[667], 0},
+    {"timeStamping", "Time Stamping", NID_time_stamp, 8, &kObjectData[675], 0},
+    {"msCodeInd", "Microsoft Individual Code Signing", NID_ms_code_ind, 10,
+     &kObjectData[683], 0},
+    {"msCodeCom", "Microsoft Commercial Code Signing", NID_ms_code_com, 10,
+     &kObjectData[693], 0},
+    {"msCTLSign", "Microsoft Trust List Signing", NID_ms_ctl_sign, 10,
+     &kObjectData[703], 0},
+    {"msSGC", "Microsoft Server Gated Crypto", NID_ms_sgc, 10,
+     &kObjectData[713], 0},
+    {"msEFS", "Microsoft Encrypted File System", NID_ms_efs, 10,
+     &kObjectData[723], 0},
+    {"nsSGC", "Netscape Server Gated Crypto", NID_ns_sgc, 9, &kObjectData[733],
+     0},
+    {"deltaCRL", "X509v3 Delta CRL Indicator", NID_delta_crl, 3,
+     &kObjectData[742], 0},
+    {"CRLReason", "X509v3 CRL Reason Code", NID_crl_reason, 3,
+     &kObjectData[745], 0},
+    {"invalidityDate", "Invalidity Date", NID_invalidity_date, 3,
+     &kObjectData[748], 0},
+    {"SXNetID", "Strong Extranet ID", NID_sxnet, 5, &kObjectData[751], 0},
+    {"PBE-SHA1-RC4-128", "pbeWithSHA1And128BitRC4",
+     NID_pbe_WithSHA1And128BitRC4, 10, &kObjectData[756], 0},
+    {"PBE-SHA1-RC4-40", "pbeWithSHA1And40BitRC4", NID_pbe_WithSHA1And40BitRC4,
+     10, &kObjectData[766], 0},
+    {"PBE-SHA1-3DES", "pbeWithSHA1And3-KeyTripleDES-CBC",
+     NID_pbe_WithSHA1And3_Key_TripleDES_CBC, 10, &kObjectData[776], 0},
+    {"PBE-SHA1-2DES", "pbeWithSHA1And2-KeyTripleDES-CBC",
+     NID_pbe_WithSHA1And2_Key_TripleDES_CBC, 10, &kObjectData[786], 0},
+    {"PBE-SHA1-RC2-128", "pbeWithSHA1And128BitRC2-CBC",
+     NID_pbe_WithSHA1And128BitRC2_CBC, 10, &kObjectData[796], 0},
+    {"PBE-SHA1-RC2-40", "pbeWithSHA1And40BitRC2-CBC",
+     NID_pbe_WithSHA1And40BitRC2_CBC, 10, &kObjectData[806], 0},
+    {"keyBag", "keyBag", NID_keyBag, 11, &kObjectData[816], 0},
+    {"pkcs8ShroudedKeyBag", "pkcs8ShroudedKeyBag", NID_pkcs8ShroudedKeyBag, 11,
+     &kObjectData[827], 0},
+    {"certBag", "certBag", NID_certBag, 11, &kObjectData[838], 0},
+    {"crlBag", "crlBag", NID_crlBag, 11, &kObjectData[849], 0},
+    {"secretBag", "secretBag", NID_secretBag, 11, &kObjectData[860], 0},
+    {"safeContentsBag", "safeContentsBag", NID_safeContentsBag, 11,
+     &kObjectData[871], 0},
+    {"friendlyName", "friendlyName", NID_friendlyName, 9, &kObjectData[882], 0},
+    {"localKeyID", "localKeyID", NID_localKeyID, 9, &kObjectData[891], 0},
+    {"x509Certificate", "x509Certificate", NID_x509Certificate, 10,
+     &kObjectData[900], 0},
+    {"sdsiCertificate", "sdsiCertificate", NID_sdsiCertificate, 10,
+     &kObjectData[910], 0},
+    {"x509Crl", "x509Crl", NID_x509Crl, 10, &kObjectData[920], 0},
+    {"PBES2", "PBES2", NID_pbes2, 9, &kObjectData[930], 0},
+    {"PBMAC1", "PBMAC1", NID_pbmac1, 9, &kObjectData[939], 0},
+    {"hmacWithSHA1", "hmacWithSHA1", NID_hmacWithSHA1, 8, &kObjectData[948], 0},
+    {"id-qt-cps", "Policy Qualifier CPS", NID_id_qt_cps, 8, &kObjectData[956],
+     0},
+    {"id-qt-unotice", "Policy Qualifier User Notice", NID_id_qt_unotice, 8,
+     &kObjectData[964], 0},
+    {"RC2-64-CBC", "rc2-64-cbc", NID_rc2_64_cbc, 0, NULL, 0},
+    {"SMIME-CAPS", "S/MIME Capabilities", NID_SMIMECapabilities, 9,
+     &kObjectData[972], 0},
+    {"PBE-MD2-RC2-64", "pbeWithMD2AndRC2-CBC", NID_pbeWithMD2AndRC2_CBC, 9,
+     &kObjectData[981], 0},
+    {"PBE-MD5-RC2-64", "pbeWithMD5AndRC2-CBC", NID_pbeWithMD5AndRC2_CBC, 9,
+     &kObjectData[990], 0},
+    {"PBE-SHA1-DES", "pbeWithSHA1AndDES-CBC", NID_pbeWithSHA1AndDES_CBC, 9,
+     &kObjectData[999], 0},
+    {"msExtReq", "Microsoft Extension Request", NID_ms_ext_req, 10,
+     &kObjectData[1008], 0},
+    {"extReq", "Extension Request", NID_ext_req, 9, &kObjectData[1018], 0},
+    {"name", "name", NID_name, 3, &kObjectData[1027], 0},
+    {"dnQualifier", "dnQualifier", NID_dnQualifier, 3, &kObjectData[1030], 0},
+    {"id-pe", "id-pe", NID_id_pe, 7, &kObjectData[1033], 0},
+    {"id-ad", "id-ad", NID_id_ad, 7, &kObjectData[1040], 0},
+    {"authorityInfoAccess", "Authority Information Access", NID_info_access, 8,
+     &kObjectData[1047], 0},
+    {"OCSP", "OCSP", NID_ad_OCSP, 8, &kObjectData[1055], 0},
+    {"caIssuers", "CA Issuers", NID_ad_ca_issuers, 8, &kObjectData[1063], 0},
+    {"OCSPSigning", "OCSP Signing", NID_OCSP_sign, 8, &kObjectData[1071], 0},
+    {"ISO", "iso", NID_iso, 0, NULL, 0},
+    {"member-body", "ISO Member Body", NID_member_body, 1, &kObjectData[1079],
+     0},
+    {"ISO-US", "ISO US Member Body", NID_ISO_US, 3, &kObjectData[1080], 0},
+    {"X9-57", "X9.57", NID_X9_57, 5, &kObjectData[1083], 0},
+    {"X9cm", "X9.57 CM ?", NID_X9cm, 6, &kObjectData[1088], 0},
+    {"pkcs1", "pkcs1", NID_pkcs1, 8, &kObjectData[1094], 0},
+    {"pkcs5", "pkcs5", NID_pkcs5, 8, &kObjectData[1102], 0},
+    {"SMIME", "S/MIME", NID_SMIME, 9, &kObjectData[1110], 0},
+    {"id-smime-mod", "id-smime-mod", NID_id_smime_mod, 10, &kObjectData[1119],
+     0},
+    {"id-smime-ct", "id-smime-ct", NID_id_smime_ct, 10, &kObjectData[1129], 0},
+    {"id-smime-aa", "id-smime-aa", NID_id_smime_aa, 10, &kObjectData[1139], 0},
+    {"id-smime-alg", "id-smime-alg", NID_id_smime_alg, 10, &kObjectData[1149],
+     0},
+    {"id-smime-cd", "id-smime-cd", NID_id_smime_cd, 10, &kObjectData[1159], 0},
+    {"id-smime-spq", "id-smime-spq", NID_id_smime_spq, 10, &kObjectData[1169],
+     0},
+    {"id-smime-cti", "id-smime-cti", NID_id_smime_cti, 10, &kObjectData[1179],
+     0},
+    {"id-smime-mod-cms", "id-smime-mod-cms", NID_id_smime_mod_cms, 11,
+     &kObjectData[1189], 0},
+    {"id-smime-mod-ess", "id-smime-mod-ess", NID_id_smime_mod_ess, 11,
+     &kObjectData[1200], 0},
+    {"id-smime-mod-oid", "id-smime-mod-oid", NID_id_smime_mod_oid, 11,
+     &kObjectData[1211], 0},
+    {"id-smime-mod-msg-v3", "id-smime-mod-msg-v3", NID_id_smime_mod_msg_v3, 11,
+     &kObjectData[1222], 0},
+    {"id-smime-mod-ets-eSignature-88", "id-smime-mod-ets-eSignature-88",
+     NID_id_smime_mod_ets_eSignature_88, 11, &kObjectData[1233], 0},
+    {"id-smime-mod-ets-eSignature-97", "id-smime-mod-ets-eSignature-97",
+     NID_id_smime_mod_ets_eSignature_97, 11, &kObjectData[1244], 0},
+    {"id-smime-mod-ets-eSigPolicy-88", "id-smime-mod-ets-eSigPolicy-88",
+     NID_id_smime_mod_ets_eSigPolicy_88, 11, &kObjectData[1255], 0},
+    {"id-smime-mod-ets-eSigPolicy-97", "id-smime-mod-ets-eSigPolicy-97",
+     NID_id_smime_mod_ets_eSigPolicy_97, 11, &kObjectData[1266], 0},
+    {"id-smime-ct-receipt", "id-smime-ct-receipt", NID_id_smime_ct_receipt, 11,
+     &kObjectData[1277], 0},
+    {"id-smime-ct-authData", "id-smime-ct-authData", NID_id_smime_ct_authData,
+     11, &kObjectData[1288], 0},
+    {"id-smime-ct-publishCert", "id-smime-ct-publishCert",
+     NID_id_smime_ct_publishCert, 11, &kObjectData[1299], 0},
+    {"id-smime-ct-TSTInfo", "id-smime-ct-TSTInfo", NID_id_smime_ct_TSTInfo, 11,
+     &kObjectData[1310], 0},
+    {"id-smime-ct-TDTInfo", "id-smime-ct-TDTInfo", NID_id_smime_ct_TDTInfo, 11,
+     &kObjectData[1321], 0},
+    {"id-smime-ct-contentInfo", "id-smime-ct-contentInfo",
+     NID_id_smime_ct_contentInfo, 11, &kObjectData[1332], 0},
+    {"id-smime-ct-DVCSRequestData", "id-smime-ct-DVCSRequestData",
+     NID_id_smime_ct_DVCSRequestData, 11, &kObjectData[1343], 0},
+    {"id-smime-ct-DVCSResponseData", "id-smime-ct-DVCSResponseData",
+     NID_id_smime_ct_DVCSResponseData, 11, &kObjectData[1354], 0},
+    {"id-smime-aa-receiptRequest", "id-smime-aa-receiptRequest",
+     NID_id_smime_aa_receiptRequest, 11, &kObjectData[1365], 0},
+    {"id-smime-aa-securityLabel", "id-smime-aa-securityLabel",
+     NID_id_smime_aa_securityLabel, 11, &kObjectData[1376], 0},
+    {"id-smime-aa-mlExpandHistory", "id-smime-aa-mlExpandHistory",
+     NID_id_smime_aa_mlExpandHistory, 11, &kObjectData[1387], 0},
+    {"id-smime-aa-contentHint", "id-smime-aa-contentHint",
+     NID_id_smime_aa_contentHint, 11, &kObjectData[1398], 0},
+    {"id-smime-aa-msgSigDigest", "id-smime-aa-msgSigDigest",
+     NID_id_smime_aa_msgSigDigest, 11, &kObjectData[1409], 0},
+    {"id-smime-aa-encapContentType", "id-smime-aa-encapContentType",
+     NID_id_smime_aa_encapContentType, 11, &kObjectData[1420], 0},
+    {"id-smime-aa-contentIdentifier", "id-smime-aa-contentIdentifier",
+     NID_id_smime_aa_contentIdentifier, 11, &kObjectData[1431], 0},
+    {"id-smime-aa-macValue", "id-smime-aa-macValue", NID_id_smime_aa_macValue,
+     11, &kObjectData[1442], 0},
+    {"id-smime-aa-equivalentLabels", "id-smime-aa-equivalentLabels",
+     NID_id_smime_aa_equivalentLabels, 11, &kObjectData[1453], 0},
+    {"id-smime-aa-contentReference", "id-smime-aa-contentReference",
+     NID_id_smime_aa_contentReference, 11, &kObjectData[1464], 0},
+    {"id-smime-aa-encrypKeyPref", "id-smime-aa-encrypKeyPref",
+     NID_id_smime_aa_encrypKeyPref, 11, &kObjectData[1475], 0},
+    {"id-smime-aa-signingCertificate", "id-smime-aa-signingCertificate",
+     NID_id_smime_aa_signingCertificate, 11, &kObjectData[1486], 0},
+    {"id-smime-aa-smimeEncryptCerts", "id-smime-aa-smimeEncryptCerts",
+     NID_id_smime_aa_smimeEncryptCerts, 11, &kObjectData[1497], 0},
+    {"id-smime-aa-timeStampToken", "id-smime-aa-timeStampToken",
+     NID_id_smime_aa_timeStampToken, 11, &kObjectData[1508], 0},
+    {"id-smime-aa-ets-sigPolicyId", "id-smime-aa-ets-sigPolicyId",
+     NID_id_smime_aa_ets_sigPolicyId, 11, &kObjectData[1519], 0},
+    {"id-smime-aa-ets-commitmentType", "id-smime-aa-ets-commitmentType",
+     NID_id_smime_aa_ets_commitmentType, 11, &kObjectData[1530], 0},
+    {"id-smime-aa-ets-signerLocation", "id-smime-aa-ets-signerLocation",
+     NID_id_smime_aa_ets_signerLocation, 11, &kObjectData[1541], 0},
+    {"id-smime-aa-ets-signerAttr", "id-smime-aa-ets-signerAttr",
+     NID_id_smime_aa_ets_signerAttr, 11, &kObjectData[1552], 0},
+    {"id-smime-aa-ets-otherSigCert", "id-smime-aa-ets-otherSigCert",
+     NID_id_smime_aa_ets_otherSigCert, 11, &kObjectData[1563], 0},
+    {"id-smime-aa-ets-contentTimestamp", "id-smime-aa-ets-contentTimestamp",
+     NID_id_smime_aa_ets_contentTimestamp, 11, &kObjectData[1574], 0},
+    {"id-smime-aa-ets-CertificateRefs", "id-smime-aa-ets-CertificateRefs",
+     NID_id_smime_aa_ets_CertificateRefs, 11, &kObjectData[1585], 0},
+    {"id-smime-aa-ets-RevocationRefs", "id-smime-aa-ets-RevocationRefs",
+     NID_id_smime_aa_ets_RevocationRefs, 11, &kObjectData[1596], 0},
+    {"id-smime-aa-ets-certValues", "id-smime-aa-ets-certValues",
+     NID_id_smime_aa_ets_certValues, 11, &kObjectData[1607], 0},
+    {"id-smime-aa-ets-revocationValues", "id-smime-aa-ets-revocationValues",
+     NID_id_smime_aa_ets_revocationValues, 11, &kObjectData[1618], 0},
+    {"id-smime-aa-ets-escTimeStamp", "id-smime-aa-ets-escTimeStamp",
+     NID_id_smime_aa_ets_escTimeStamp, 11, &kObjectData[1629], 0},
+    {"id-smime-aa-ets-certCRLTimestamp", "id-smime-aa-ets-certCRLTimestamp",
+     NID_id_smime_aa_ets_certCRLTimestamp, 11, &kObjectData[1640], 0},
+    {"id-smime-aa-ets-archiveTimeStamp", "id-smime-aa-ets-archiveTimeStamp",
+     NID_id_smime_aa_ets_archiveTimeStamp, 11, &kObjectData[1651], 0},
+    {"id-smime-aa-signatureType", "id-smime-aa-signatureType",
+     NID_id_smime_aa_signatureType, 11, &kObjectData[1662], 0},
+    {"id-smime-aa-dvcs-dvc", "id-smime-aa-dvcs-dvc", NID_id_smime_aa_dvcs_dvc,
+     11, &kObjectData[1673], 0},
+    {"id-smime-alg-ESDHwith3DES", "id-smime-alg-ESDHwith3DES",
+     NID_id_smime_alg_ESDHwith3DES, 11, &kObjectData[1684], 0},
+    {"id-smime-alg-ESDHwithRC2", "id-smime-alg-ESDHwithRC2",
+     NID_id_smime_alg_ESDHwithRC2, 11, &kObjectData[1695], 0},
+    {"id-smime-alg-3DESwrap", "id-smime-alg-3DESwrap",
+     NID_id_smime_alg_3DESwrap, 11, &kObjectData[1706], 0},
+    {"id-smime-alg-RC2wrap", "id-smime-alg-RC2wrap", NID_id_smime_alg_RC2wrap,
+     11, &kObjectData[1717], 0},
+    {"id-smime-alg-ESDH", "id-smime-alg-ESDH", NID_id_smime_alg_ESDH, 11,
+     &kObjectData[1728], 0},
+    {"id-smime-alg-CMS3DESwrap", "id-smime-alg-CMS3DESwrap",
+     NID_id_smime_alg_CMS3DESwrap, 11, &kObjectData[1739], 0},
+    {"id-smime-alg-CMSRC2wrap", "id-smime-alg-CMSRC2wrap",
+     NID_id_smime_alg_CMSRC2wrap, 11, &kObjectData[1750], 0},
+    {"id-smime-cd-ldap", "id-smime-cd-ldap", NID_id_smime_cd_ldap, 11,
+     &kObjectData[1761], 0},
+    {"id-smime-spq-ets-sqt-uri", "id-smime-spq-ets-sqt-uri",
+     NID_id_smime_spq_ets_sqt_uri, 11, &kObjectData[1772], 0},
+    {"id-smime-spq-ets-sqt-unotice", "id-smime-spq-ets-sqt-unotice",
+     NID_id_smime_spq_ets_sqt_unotice, 11, &kObjectData[1783], 0},
+    {"id-smime-cti-ets-proofOfOrigin", "id-smime-cti-ets-proofOfOrigin",
+     NID_id_smime_cti_ets_proofOfOrigin, 11, &kObjectData[1794], 0},
+    {"id-smime-cti-ets-proofOfReceipt", "id-smime-cti-ets-proofOfReceipt",
+     NID_id_smime_cti_ets_proofOfReceipt, 11, &kObjectData[1805], 0},
+    {"id-smime-cti-ets-proofOfDelivery", "id-smime-cti-ets-proofOfDelivery",
+     NID_id_smime_cti_ets_proofOfDelivery, 11, &kObjectData[1816], 0},
+    {"id-smime-cti-ets-proofOfSender", "id-smime-cti-ets-proofOfSender",
+     NID_id_smime_cti_ets_proofOfSender, 11, &kObjectData[1827], 0},
+    {"id-smime-cti-ets-proofOfApproval", "id-smime-cti-ets-proofOfApproval",
+     NID_id_smime_cti_ets_proofOfApproval, 11, &kObjectData[1838], 0},
+    {"id-smime-cti-ets-proofOfCreation", "id-smime-cti-ets-proofOfCreation",
+     NID_id_smime_cti_ets_proofOfCreation, 11, &kObjectData[1849], 0},
+    {"MD4", "md4", NID_md4, 8, &kObjectData[1860], 0},
+    {"id-pkix-mod", "id-pkix-mod", NID_id_pkix_mod, 7, &kObjectData[1868], 0},
+    {"id-qt", "id-qt", NID_id_qt, 7, &kObjectData[1875], 0},
+    {"id-it", "id-it", NID_id_it, 7, &kObjectData[1882], 0},
+    {"id-pkip", "id-pkip", NID_id_pkip, 7, &kObjectData[1889], 0},
+    {"id-alg", "id-alg", NID_id_alg, 7, &kObjectData[1896], 0},
+    {"id-cmc", "id-cmc", NID_id_cmc, 7, &kObjectData[1903], 0},
+    {"id-on", "id-on", NID_id_on, 7, &kObjectData[1910], 0},
+    {"id-pda", "id-pda", NID_id_pda, 7, &kObjectData[1917], 0},
+    {"id-aca", "id-aca", NID_id_aca, 7, &kObjectData[1924], 0},
+    {"id-qcs", "id-qcs", NID_id_qcs, 7, &kObjectData[1931], 0},
+    {"id-cct", "id-cct", NID_id_cct, 7, &kObjectData[1938], 0},
+    {"id-pkix1-explicit-88", "id-pkix1-explicit-88", NID_id_pkix1_explicit_88,
+     8, &kObjectData[1945], 0},
+    {"id-pkix1-implicit-88", "id-pkix1-implicit-88", NID_id_pkix1_implicit_88,
+     8, &kObjectData[1953], 0},
+    {"id-pkix1-explicit-93", "id-pkix1-explicit-93", NID_id_pkix1_explicit_93,
+     8, &kObjectData[1961], 0},
+    {"id-pkix1-implicit-93", "id-pkix1-implicit-93", NID_id_pkix1_implicit_93,
+     8, &kObjectData[1969], 0},
+    {"id-mod-crmf", "id-mod-crmf", NID_id_mod_crmf, 8, &kObjectData[1977], 0},
+    {"id-mod-cmc", "id-mod-cmc", NID_id_mod_cmc, 8, &kObjectData[1985], 0},
+    {"id-mod-kea-profile-88", "id-mod-kea-profile-88",
+     NID_id_mod_kea_profile_88, 8, &kObjectData[1993], 0},
+    {"id-mod-kea-profile-93", "id-mod-kea-profile-93",
+     NID_id_mod_kea_profile_93, 8, &kObjectData[2001], 0},
+    {"id-mod-cmp", "id-mod-cmp", NID_id_mod_cmp, 8, &kObjectData[2009], 0},
+    {"id-mod-qualified-cert-88", "id-mod-qualified-cert-88",
+     NID_id_mod_qualified_cert_88, 8, &kObjectData[2017], 0},
+    {"id-mod-qualified-cert-93", "id-mod-qualified-cert-93",
+     NID_id_mod_qualified_cert_93, 8, &kObjectData[2025], 0},
+    {"id-mod-attribute-cert", "id-mod-attribute-cert",
+     NID_id_mod_attribute_cert, 8, &kObjectData[2033], 0},
+    {"id-mod-timestamp-protocol", "id-mod-timestamp-protocol",
+     NID_id_mod_timestamp_protocol, 8, &kObjectData[2041], 0},
+    {"id-mod-ocsp", "id-mod-ocsp", NID_id_mod_ocsp, 8, &kObjectData[2049], 0},
+    {"id-mod-dvcs", "id-mod-dvcs", NID_id_mod_dvcs, 8, &kObjectData[2057], 0},
+    {"id-mod-cmp2000", "id-mod-cmp2000", NID_id_mod_cmp2000, 8,
+     &kObjectData[2065], 0},
+    {"biometricInfo", "Biometric Info", NID_biometricInfo, 8,
+     &kObjectData[2073], 0},
+    {"qcStatements", "qcStatements", NID_qcStatements, 8, &kObjectData[2081],
+     0},
+    {"ac-auditEntity", "ac-auditEntity", NID_ac_auditEntity, 8,
+     &kObjectData[2089], 0},
+    {"ac-targeting", "ac-targeting", NID_ac_targeting, 8, &kObjectData[2097],
+     0},
+    {"aaControls", "aaControls", NID_aaControls, 8, &kObjectData[2105], 0},
+    {"sbgp-ipAddrBlock", "sbgp-ipAddrBlock", NID_sbgp_ipAddrBlock, 8,
+     &kObjectData[2113], 0},
+    {"sbgp-autonomousSysNum", "sbgp-autonomousSysNum",
+     NID_sbgp_autonomousSysNum, 8, &kObjectData[2121], 0},
+    {"sbgp-routerIdentifier", "sbgp-routerIdentifier",
+     NID_sbgp_routerIdentifier, 8, &kObjectData[2129], 0},
+    {"textNotice", "textNotice", NID_textNotice, 8, &kObjectData[2137], 0},
+    {"ipsecEndSystem", "IPSec End System", NID_ipsecEndSystem, 8,
+     &kObjectData[2145], 0},
+    {"ipsecTunnel", "IPSec Tunnel", NID_ipsecTunnel, 8, &kObjectData[2153], 0},
+    {"ipsecUser", "IPSec User", NID_ipsecUser, 8, &kObjectData[2161], 0},
+    {"DVCS", "dvcs", NID_dvcs, 8, &kObjectData[2169], 0},
+    {"id-it-caProtEncCert", "id-it-caProtEncCert", NID_id_it_caProtEncCert, 8,
+     &kObjectData[2177], 0},
+    {"id-it-signKeyPairTypes", "id-it-signKeyPairTypes",
+     NID_id_it_signKeyPairTypes, 8, &kObjectData[2185], 0},
+    {"id-it-encKeyPairTypes", "id-it-encKeyPairTypes",
+     NID_id_it_encKeyPairTypes, 8, &kObjectData[2193], 0},
+    {"id-it-preferredSymmAlg", "id-it-preferredSymmAlg",
+     NID_id_it_preferredSymmAlg, 8, &kObjectData[2201], 0},
+    {"id-it-caKeyUpdateInfo", "id-it-caKeyUpdateInfo",
+     NID_id_it_caKeyUpdateInfo, 8, &kObjectData[2209], 0},
+    {"id-it-currentCRL", "id-it-currentCRL", NID_id_it_currentCRL, 8,
+     &kObjectData[2217], 0},
+    {"id-it-unsupportedOIDs", "id-it-unsupportedOIDs",
+     NID_id_it_unsupportedOIDs, 8, &kObjectData[2225], 0},
+    {"id-it-subscriptionRequest", "id-it-subscriptionRequest",
+     NID_id_it_subscriptionRequest, 8, &kObjectData[2233], 0},
+    {"id-it-subscriptionResponse", "id-it-subscriptionResponse",
+     NID_id_it_subscriptionResponse, 8, &kObjectData[2241], 0},
+    {"id-it-keyPairParamReq", "id-it-keyPairParamReq",
+     NID_id_it_keyPairParamReq, 8, &kObjectData[2249], 0},
+    {"id-it-keyPairParamRep", "id-it-keyPairParamRep",
+     NID_id_it_keyPairParamRep, 8, &kObjectData[2257], 0},
+    {"id-it-revPassphrase", "id-it-revPassphrase", NID_id_it_revPassphrase, 8,
+     &kObjectData[2265], 0},
+    {"id-it-implicitConfirm", "id-it-implicitConfirm",
+     NID_id_it_implicitConfirm, 8, &kObjectData[2273], 0},
+    {"id-it-confirmWaitTime", "id-it-confirmWaitTime",
+     NID_id_it_confirmWaitTime, 8, &kObjectData[2281], 0},
+    {"id-it-origPKIMessage", "id-it-origPKIMessage", NID_id_it_origPKIMessage,
+     8, &kObjectData[2289], 0},
+    {"id-regCtrl", "id-regCtrl", NID_id_regCtrl, 8, &kObjectData[2297], 0},
+    {"id-regInfo", "id-regInfo", NID_id_regInfo, 8, &kObjectData[2305], 0},
+    {"id-regCtrl-regToken", "id-regCtrl-regToken", NID_id_regCtrl_regToken, 9,
+     &kObjectData[2313], 0},
+    {"id-regCtrl-authenticator", "id-regCtrl-authenticator",
+     NID_id_regCtrl_authenticator, 9, &kObjectData[2322], 0},
+    {"id-regCtrl-pkiPublicationInfo", "id-regCtrl-pkiPublicationInfo",
+     NID_id_regCtrl_pkiPublicationInfo, 9, &kObjectData[2331], 0},
+    {"id-regCtrl-pkiArchiveOptions", "id-regCtrl-pkiArchiveOptions",
+     NID_id_regCtrl_pkiArchiveOptions, 9, &kObjectData[2340], 0},
+    {"id-regCtrl-oldCertID", "id-regCtrl-oldCertID", NID_id_regCtrl_oldCertID,
+     9, &kObjectData[2349], 0},
+    {"id-regCtrl-protocolEncrKey", "id-regCtrl-protocolEncrKey",
+     NID_id_regCtrl_protocolEncrKey, 9, &kObjectData[2358], 0},
+    {"id-regInfo-utf8Pairs", "id-regInfo-utf8Pairs", NID_id_regInfo_utf8Pairs,
+     9, &kObjectData[2367], 0},
+    {"id-regInfo-certReq", "id-regInfo-certReq", NID_id_regInfo_certReq, 9,
+     &kObjectData[2376], 0},
+    {"id-alg-des40", "id-alg-des40", NID_id_alg_des40, 8, &kObjectData[2385],
+     0},
+    {"id-alg-noSignature", "id-alg-noSignature", NID_id_alg_noSignature, 8,
+     &kObjectData[2393], 0},
+    {"id-alg-dh-sig-hmac-sha1", "id-alg-dh-sig-hmac-sha1",
+     NID_id_alg_dh_sig_hmac_sha1, 8, &kObjectData[2401], 0},
+    {"id-alg-dh-pop", "id-alg-dh-pop", NID_id_alg_dh_pop, 8, &kObjectData[2409],
+     0},
+    {"id-cmc-statusInfo", "id-cmc-statusInfo", NID_id_cmc_statusInfo, 8,
+     &kObjectData[2417], 0},
+    {"id-cmc-identification", "id-cmc-identification",
+     NID_id_cmc_identification, 8, &kObjectData[2425], 0},
+    {"id-cmc-identityProof", "id-cmc-identityProof", NID_id_cmc_identityProof,
+     8, &kObjectData[2433], 0},
+    {"id-cmc-dataReturn", "id-cmc-dataReturn", NID_id_cmc_dataReturn, 8,
+     &kObjectData[2441], 0},
+    {"id-cmc-transactionId", "id-cmc-transactionId", NID_id_cmc_transactionId,
+     8, &kObjectData[2449], 0},
+    {"id-cmc-senderNonce", "id-cmc-senderNonce", NID_id_cmc_senderNonce, 8,
+     &kObjectData[2457], 0},
+    {"id-cmc-recipientNonce", "id-cmc-recipientNonce",
+     NID_id_cmc_recipientNonce, 8, &kObjectData[2465], 0},
+    {"id-cmc-addExtensions", "id-cmc-addExtensions", NID_id_cmc_addExtensions,
+     8, &kObjectData[2473], 0},
+    {"id-cmc-encryptedPOP", "id-cmc-encryptedPOP", NID_id_cmc_encryptedPOP, 8,
+     &kObjectData[2481], 0},
+    {"id-cmc-decryptedPOP", "id-cmc-decryptedPOP", NID_id_cmc_decryptedPOP, 8,
+     &kObjectData[2489], 0},
+    {"id-cmc-lraPOPWitness", "id-cmc-lraPOPWitness", NID_id_cmc_lraPOPWitness,
+     8, &kObjectData[2497], 0},
+    {"id-cmc-getCert", "id-cmc-getCert", NID_id_cmc_getCert, 8,
+     &kObjectData[2505], 0},
+    {"id-cmc-getCRL", "id-cmc-getCRL", NID_id_cmc_getCRL, 8, &kObjectData[2513],
+     0},
+    {"id-cmc-revokeRequest", "id-cmc-revokeRequest", NID_id_cmc_revokeRequest,
+     8, &kObjectData[2521], 0},
+    {"id-cmc-regInfo", "id-cmc-regInfo", NID_id_cmc_regInfo, 8,
+     &kObjectData[2529], 0},
+    {"id-cmc-responseInfo", "id-cmc-responseInfo", NID_id_cmc_responseInfo, 8,
+     &kObjectData[2537], 0},
+    {"id-cmc-queryPending", "id-cmc-queryPending", NID_id_cmc_queryPending, 8,
+     &kObjectData[2545], 0},
+    {"id-cmc-popLinkRandom", "id-cmc-popLinkRandom", NID_id_cmc_popLinkRandom,
+     8, &kObjectData[2553], 0},
+    {"id-cmc-popLinkWitness", "id-cmc-popLinkWitness",
+     NID_id_cmc_popLinkWitness, 8, &kObjectData[2561], 0},
+    {"id-cmc-confirmCertAcceptance", "id-cmc-confirmCertAcceptance",
+     NID_id_cmc_confirmCertAcceptance, 8, &kObjectData[2569], 0},
+    {"id-on-personalData", "id-on-personalData", NID_id_on_personalData, 8,
+     &kObjectData[2577], 0},
+    {"id-pda-dateOfBirth", "id-pda-dateOfBirth", NID_id_pda_dateOfBirth, 8,
+     &kObjectData[2585], 0},
+    {"id-pda-placeOfBirth", "id-pda-placeOfBirth", NID_id_pda_placeOfBirth, 8,
+     &kObjectData[2593], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"id-pda-gender", "id-pda-gender", NID_id_pda_gender, 8, &kObjectData[2601],
+     0},
+    {"id-pda-countryOfCitizenship", "id-pda-countryOfCitizenship",
+     NID_id_pda_countryOfCitizenship, 8, &kObjectData[2609], 0},
+    {"id-pda-countryOfResidence", "id-pda-countryOfResidence",
+     NID_id_pda_countryOfResidence, 8, &kObjectData[2617], 0},
+    {"id-aca-authenticationInfo", "id-aca-authenticationInfo",
+     NID_id_aca_authenticationInfo, 8, &kObjectData[2625], 0},
+    {"id-aca-accessIdentity", "id-aca-accessIdentity",
+     NID_id_aca_accessIdentity, 8, &kObjectData[2633], 0},
+    {"id-aca-chargingIdentity", "id-aca-chargingIdentity",
+     NID_id_aca_chargingIdentity, 8, &kObjectData[2641], 0},
+    {"id-aca-group", "id-aca-group", NID_id_aca_group, 8, &kObjectData[2649],
+     0},
+    {"id-aca-role", "id-aca-role", NID_id_aca_role, 8, &kObjectData[2657], 0},
+    {"id-qcs-pkixQCSyntax-v1", "id-qcs-pkixQCSyntax-v1",
+     NID_id_qcs_pkixQCSyntax_v1, 8, &kObjectData[2665], 0},
+    {"id-cct-crs", "id-cct-crs", NID_id_cct_crs, 8, &kObjectData[2673], 0},
+    {"id-cct-PKIData", "id-cct-PKIData", NID_id_cct_PKIData, 8,
+     &kObjectData[2681], 0},
+    {"id-cct-PKIResponse", "id-cct-PKIResponse", NID_id_cct_PKIResponse, 8,
+     &kObjectData[2689], 0},
+    {"ad_timestamping", "AD Time Stamping", NID_ad_timeStamping, 8,
+     &kObjectData[2697], 0},
+    {"AD_DVCS", "ad dvcs", NID_ad_dvcs, 8, &kObjectData[2705], 0},
+    {"basicOCSPResponse", "Basic OCSP Response", NID_id_pkix_OCSP_basic, 9,
+     &kObjectData[2713], 0},
+    {"Nonce", "OCSP Nonce", NID_id_pkix_OCSP_Nonce, 9, &kObjectData[2722], 0},
+    {"CrlID", "OCSP CRL ID", NID_id_pkix_OCSP_CrlID, 9, &kObjectData[2731], 0},
+    {"acceptableResponses", "Acceptable OCSP Responses",
+     NID_id_pkix_OCSP_acceptableResponses, 9, &kObjectData[2740], 0},
+    {"noCheck", "OCSP No Check", NID_id_pkix_OCSP_noCheck, 9,
+     &kObjectData[2749], 0},
+    {"archiveCutoff", "OCSP Archive Cutoff", NID_id_pkix_OCSP_archiveCutoff, 9,
+     &kObjectData[2758], 0},
+    {"serviceLocator", "OCSP Service Locator", NID_id_pkix_OCSP_serviceLocator,
+     9, &kObjectData[2767], 0},
+    {"extendedStatus", "Extended OCSP Status", NID_id_pkix_OCSP_extendedStatus,
+     9, &kObjectData[2776], 0},
+    {"valid", "valid", NID_id_pkix_OCSP_valid, 9, &kObjectData[2785], 0},
+    {"path", "path", NID_id_pkix_OCSP_path, 9, &kObjectData[2794], 0},
+    {"trustRoot", "Trust Root", NID_id_pkix_OCSP_trustRoot, 9,
+     &kObjectData[2803], 0},
+    {"algorithm", "algorithm", NID_algorithm, 4, &kObjectData[2812], 0},
+    {"rsaSignature", "rsaSignature", NID_rsaSignature, 5, &kObjectData[2816],
+     0},
+    {"X500algorithms", "directory services - algorithms", NID_X500algorithms, 2,
+     &kObjectData[2821], 0},
+    {"ORG", "org", NID_org, 1, &kObjectData[2823], 0},
+    {"DOD", "dod", NID_dod, 2, &kObjectData[2824], 0},
+    {"IANA", "iana", NID_iana, 3, &kObjectData[2826], 0},
+    {"directory", "Directory", NID_Directory, 4, &kObjectData[2829], 0},
+    {"mgmt", "Management", NID_Management, 4, &kObjectData[2833], 0},
+    {"experimental", "Experimental", NID_Experimental, 4, &kObjectData[2837],
+     0},
+    {"private", "Private", NID_Private, 4, &kObjectData[2841], 0},
+    {"security", "Security", NID_Security, 4, &kObjectData[2845], 0},
+    {"snmpv2", "SNMPv2", NID_SNMPv2, 4, &kObjectData[2849], 0},
+    {"Mail", "Mail", NID_Mail, 4, &kObjectData[2853], 0},
+    {"enterprises", "Enterprises", NID_Enterprises, 5, &kObjectData[2857], 0},
+    {"dcobject", "dcObject", NID_dcObject, 9, &kObjectData[2862], 0},
+    {"DC", "domainComponent", NID_domainComponent, 10, &kObjectData[2871], 0},
+    {"domain", "Domain", NID_Domain, 10, &kObjectData[2881], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"selected-attribute-types", "Selected Attribute Types",
+     NID_selected_attribute_types, 3, &kObjectData[2891], 0},
+    {"clearance", "clearance", NID_clearance, 4, &kObjectData[2894], 0},
+    {"RSA-MD4", "md4WithRSAEncryption", NID_md4WithRSAEncryption, 9,
+     &kObjectData[2898], 0},
+    {"ac-proxying", "ac-proxying", NID_ac_proxying, 8, &kObjectData[2907], 0},
+    {"subjectInfoAccess", "Subject Information Access", NID_sinfo_access, 8,
+     &kObjectData[2915], 0},
+    {"id-aca-encAttrs", "id-aca-encAttrs", NID_id_aca_encAttrs, 8,
+     &kObjectData[2923], 0},
+    {"role", "role", NID_role, 3, &kObjectData[2931], 0},
+    {"policyConstraints", "X509v3 Policy Constraints", NID_policy_constraints,
+     3, &kObjectData[2934], 0},
+    {"targetInformation", "X509v3 AC Targeting", NID_target_information, 3,
+     &kObjectData[2937], 0},
+    {"noRevAvail", "X509v3 No Revocation Available", NID_no_rev_avail, 3,
+     &kObjectData[2940], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"ansi-X9-62", "ANSI X9.62", NID_ansi_X9_62, 5, &kObjectData[2943], 0},
+    {"prime-field", "prime-field", NID_X9_62_prime_field, 7, &kObjectData[2948],
+     0},
+    {"characteristic-two-field", "characteristic-two-field",
+     NID_X9_62_characteristic_two_field, 7, &kObjectData[2955], 0},
+    {"id-ecPublicKey", "id-ecPublicKey", NID_X9_62_id_ecPublicKey, 7,
+     &kObjectData[2962], 0},
+    {"prime192v1", "prime192v1", NID_X9_62_prime192v1, 8, &kObjectData[2969],
+     0},
+    {"prime192v2", "prime192v2", NID_X9_62_prime192v2, 8, &kObjectData[2977],
+     0},
+    {"prime192v3", "prime192v3", NID_X9_62_prime192v3, 8, &kObjectData[2985],
+     0},
+    {"prime239v1", "prime239v1", NID_X9_62_prime239v1, 8, &kObjectData[2993],
+     0},
+    {"prime239v2", "prime239v2", NID_X9_62_prime239v2, 8, &kObjectData[3001],
+     0},
+    {"prime239v3", "prime239v3", NID_X9_62_prime239v3, 8, &kObjectData[3009],
+     0},
+    {"prime256v1", "prime256v1", NID_X9_62_prime256v1, 8, &kObjectData[3017],
+     0},
+    {"ecdsa-with-SHA1", "ecdsa-with-SHA1", NID_ecdsa_with_SHA1, 7,
+     &kObjectData[3025], 0},
+    {"CSPName", "Microsoft CSP Name", NID_ms_csp_name, 9, &kObjectData[3032],
+     0},
+    {"AES-128-ECB", "aes-128-ecb", NID_aes_128_ecb, 9, &kObjectData[3041], 0},
+    {"AES-128-CBC", "aes-128-cbc", NID_aes_128_cbc, 9, &kObjectData[3050], 0},
+    {"AES-128-OFB", "aes-128-ofb", NID_aes_128_ofb128, 9, &kObjectData[3059],
+     0},
+    {"AES-128-CFB", "aes-128-cfb", NID_aes_128_cfb128, 9, &kObjectData[3068],
+     0},
+    {"AES-192-ECB", "aes-192-ecb", NID_aes_192_ecb, 9, &kObjectData[3077], 0},
+    {"AES-192-CBC", "aes-192-cbc", NID_aes_192_cbc, 9, &kObjectData[3086], 0},
+    {"AES-192-OFB", "aes-192-ofb", NID_aes_192_ofb128, 9, &kObjectData[3095],
+     0},
+    {"AES-192-CFB", "aes-192-cfb", NID_aes_192_cfb128, 9, &kObjectData[3104],
+     0},
+    {"AES-256-ECB", "aes-256-ecb", NID_aes_256_ecb, 9, &kObjectData[3113], 0},
+    {"AES-256-CBC", "aes-256-cbc", NID_aes_256_cbc, 9, &kObjectData[3122], 0},
+    {"AES-256-OFB", "aes-256-ofb", NID_aes_256_ofb128, 9, &kObjectData[3131],
+     0},
+    {"AES-256-CFB", "aes-256-cfb", NID_aes_256_cfb128, 9, &kObjectData[3140],
+     0},
+    {"holdInstructionCode", "Hold Instruction Code", NID_hold_instruction_code,
+     3, &kObjectData[3149], 0},
+    {"holdInstructionNone", "Hold Instruction None", NID_hold_instruction_none,
+     7, &kObjectData[3152], 0},
+    {"holdInstructionCallIssuer", "Hold Instruction Call Issuer",
+     NID_hold_instruction_call_issuer, 7, &kObjectData[3159], 0},
+    {"holdInstructionReject", "Hold Instruction Reject",
+     NID_hold_instruction_reject, 7, &kObjectData[3166], 0},
+    {"data", "data", NID_data, 1, &kObjectData[3173], 0},
+    {"pss", "pss", NID_pss, 3, &kObjectData[3174], 0},
+    {"ucl", "ucl", NID_ucl, 7, &kObjectData[3177], 0},
+    {"pilot", "pilot", NID_pilot, 8, &kObjectData[3184], 0},
+    {"pilotAttributeType", "pilotAttributeType", NID_pilotAttributeType, 9,
+     &kObjectData[3192], 0},
+    {"pilotAttributeSyntax", "pilotAttributeSyntax", NID_pilotAttributeSyntax,
+     9, &kObjectData[3201], 0},
+    {"pilotObjectClass", "pilotObjectClass", NID_pilotObjectClass, 9,
+     &kObjectData[3210], 0},
+    {"pilotGroups", "pilotGroups", NID_pilotGroups, 9, &kObjectData[3219], 0},
+    {"iA5StringSyntax", "iA5StringSyntax", NID_iA5StringSyntax, 10,
+     &kObjectData[3228], 0},
+    {"caseIgnoreIA5StringSyntax", "caseIgnoreIA5StringSyntax",
+     NID_caseIgnoreIA5StringSyntax, 10, &kObjectData[3238], 0},
+    {"pilotObject", "pilotObject", NID_pilotObject, 10, &kObjectData[3248], 0},
+    {"pilotPerson", "pilotPerson", NID_pilotPerson, 10, &kObjectData[3258], 0},
+    {"account", "account", NID_account, 10, &kObjectData[3268], 0},
+    {"document", "document", NID_document, 10, &kObjectData[3278], 0},
+    {"room", "room", NID_room, 10, &kObjectData[3288], 0},
+    {"documentSeries", "documentSeries", NID_documentSeries, 10,
+     &kObjectData[3298], 0},
+    {"rFC822localPart", "rFC822localPart", NID_rFC822localPart, 10,
+     &kObjectData[3308], 0},
+    {"dNSDomain", "dNSDomain", NID_dNSDomain, 10, &kObjectData[3318], 0},
+    {"domainRelatedObject", "domainRelatedObject", NID_domainRelatedObject, 10,
+     &kObjectData[3328], 0},
+    {"friendlyCountry", "friendlyCountry", NID_friendlyCountry, 10,
+     &kObjectData[3338], 0},
+    {"simpleSecurityObject", "simpleSecurityObject", NID_simpleSecurityObject,
+     10, &kObjectData[3348], 0},
+    {"pilotOrganization", "pilotOrganization", NID_pilotOrganization, 10,
+     &kObjectData[3358], 0},
+    {"pilotDSA", "pilotDSA", NID_pilotDSA, 10, &kObjectData[3368], 0},
+    {"qualityLabelledData", "qualityLabelledData", NID_qualityLabelledData, 10,
+     &kObjectData[3378], 0},
+    {"UID", "userId", NID_userId, 10, &kObjectData[3388], 0},
+    {"textEncodedORAddress", "textEncodedORAddress", NID_textEncodedORAddress,
+     10, &kObjectData[3398], 0},
+    {"mail", "rfc822Mailbox", NID_rfc822Mailbox, 10, &kObjectData[3408], 0},
+    {"info", "info", NID_info, 10, &kObjectData[3418], 0},
+    {"favouriteDrink", "favouriteDrink", NID_favouriteDrink, 10,
+     &kObjectData[3428], 0},
+    {"roomNumber", "roomNumber", NID_roomNumber, 10, &kObjectData[3438], 0},
+    {"photo", "photo", NID_photo, 10, &kObjectData[3448], 0},
+    {"userClass", "userClass", NID_userClass, 10, &kObjectData[3458], 0},
+    {"host", "host", NID_host, 10, &kObjectData[3468], 0},
+    {"manager", "manager", NID_manager, 10, &kObjectData[3478], 0},
+    {"documentIdentifier", "documentIdentifier", NID_documentIdentifier, 10,
+     &kObjectData[3488], 0},
+    {"documentTitle", "documentTitle", NID_documentTitle, 10,
+     &kObjectData[3498], 0},
+    {"documentVersion", "documentVersion", NID_documentVersion, 10,
+     &kObjectData[3508], 0},
+    {"documentAuthor", "documentAuthor", NID_documentAuthor, 10,
+     &kObjectData[3518], 0},
+    {"documentLocation", "documentLocation", NID_documentLocation, 10,
+     &kObjectData[3528], 0},
+    {"homeTelephoneNumber", "homeTelephoneNumber", NID_homeTelephoneNumber, 10,
+     &kObjectData[3538], 0},
+    {"secretary", "secretary", NID_secretary, 10, &kObjectData[3548], 0},
+    {"otherMailbox", "otherMailbox", NID_otherMailbox, 10, &kObjectData[3558],
+     0},
+    {"lastModifiedTime", "lastModifiedTime", NID_lastModifiedTime, 10,
+     &kObjectData[3568], 0},
+    {"lastModifiedBy", "lastModifiedBy", NID_lastModifiedBy, 10,
+     &kObjectData[3578], 0},
+    {"aRecord", "aRecord", NID_aRecord, 10, &kObjectData[3588], 0},
+    {"pilotAttributeType27", "pilotAttributeType27", NID_pilotAttributeType27,
+     10, &kObjectData[3598], 0},
+    {"mXRecord", "mXRecord", NID_mXRecord, 10, &kObjectData[3608], 0},
+    {"nSRecord", "nSRecord", NID_nSRecord, 10, &kObjectData[3618], 0},
+    {"sOARecord", "sOARecord", NID_sOARecord, 10, &kObjectData[3628], 0},
+    {"cNAMERecord", "cNAMERecord", NID_cNAMERecord, 10, &kObjectData[3638], 0},
+    {"associatedDomain", "associatedDomain", NID_associatedDomain, 10,
+     &kObjectData[3648], 0},
+    {"associatedName", "associatedName", NID_associatedName, 10,
+     &kObjectData[3658], 0},
+    {"homePostalAddress", "homePostalAddress", NID_homePostalAddress, 10,
+     &kObjectData[3668], 0},
+    {"personalTitle", "personalTitle", NID_personalTitle, 10,
+     &kObjectData[3678], 0},
+    {"mobileTelephoneNumber", "mobileTelephoneNumber",
+     NID_mobileTelephoneNumber, 10, &kObjectData[3688], 0},
+    {"pagerTelephoneNumber", "pagerTelephoneNumber", NID_pagerTelephoneNumber,
+     10, &kObjectData[3698], 0},
+    {"friendlyCountryName", "friendlyCountryName", NID_friendlyCountryName, 10,
+     &kObjectData[3708], 0},
+    {"organizationalStatus", "organizationalStatus", NID_organizationalStatus,
+     10, &kObjectData[3718], 0},
+    {"janetMailbox", "janetMailbox", NID_janetMailbox, 10, &kObjectData[3728],
+     0},
+    {"mailPreferenceOption", "mailPreferenceOption", NID_mailPreferenceOption,
+     10, &kObjectData[3738], 0},
+    {"buildingName", "buildingName", NID_buildingName, 10, &kObjectData[3748],
+     0},
+    {"dSAQuality", "dSAQuality", NID_dSAQuality, 10, &kObjectData[3758], 0},
+    {"singleLevelQuality", "singleLevelQuality", NID_singleLevelQuality, 10,
+     &kObjectData[3768], 0},
+    {"subtreeMinimumQuality", "subtreeMinimumQuality",
+     NID_subtreeMinimumQuality, 10, &kObjectData[3778], 0},
+    {"subtreeMaximumQuality", "subtreeMaximumQuality",
+     NID_subtreeMaximumQuality, 10, &kObjectData[3788], 0},
+    {"personalSignature", "personalSignature", NID_personalSignature, 10,
+     &kObjectData[3798], 0},
+    {"dITRedirect", "dITRedirect", NID_dITRedirect, 10, &kObjectData[3808], 0},
+    {"audio", "audio", NID_audio, 10, &kObjectData[3818], 0},
+    {"documentPublisher", "documentPublisher", NID_documentPublisher, 10,
+     &kObjectData[3828], 0},
+    {"x500UniqueIdentifier", "x500UniqueIdentifier", NID_x500UniqueIdentifier,
+     3, &kObjectData[3838], 0},
+    {"mime-mhs", "MIME MHS", NID_mime_mhs, 5, &kObjectData[3841], 0},
+    {"mime-mhs-headings", "mime-mhs-headings", NID_mime_mhs_headings, 6,
+     &kObjectData[3846], 0},
+    {"mime-mhs-bodies", "mime-mhs-bodies", NID_mime_mhs_bodies, 6,
+     &kObjectData[3852], 0},
+    {"id-hex-partial-message", "id-hex-partial-message",
+     NID_id_hex_partial_message, 7, &kObjectData[3858], 0},
+    {"id-hex-multipart-message", "id-hex-multipart-message",
+     NID_id_hex_multipart_message, 7, &kObjectData[3865], 0},
+    {"generationQualifier", "generationQualifier", NID_generationQualifier, 3,
+     &kObjectData[3872], 0},
+    {"pseudonym", "pseudonym", NID_pseudonym, 3, &kObjectData[3875], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"id-set", "Secure Electronic Transactions", NID_id_set, 2,
+     &kObjectData[3878], 0},
+    {"set-ctype", "content types", NID_set_ctype, 3, &kObjectData[3880], 0},
+    {"set-msgExt", "message extensions", NID_set_msgExt, 3, &kObjectData[3883],
+     0},
+    {"set-attr", "set-attr", NID_set_attr, 3, &kObjectData[3886], 0},
+    {"set-policy", "set-policy", NID_set_policy, 3, &kObjectData[3889], 0},
+    {"set-certExt", "certificate extensions", NID_set_certExt, 3,
+     &kObjectData[3892], 0},
+    {"set-brand", "set-brand", NID_set_brand, 3, &kObjectData[3895], 0},
+    {"setct-PANData", "setct-PANData", NID_setct_PANData, 4, &kObjectData[3898],
+     0},
+    {"setct-PANToken", "setct-PANToken", NID_setct_PANToken, 4,
+     &kObjectData[3902], 0},
+    {"setct-PANOnly", "setct-PANOnly", NID_setct_PANOnly, 4, &kObjectData[3906],
+     0},
+    {"setct-OIData", "setct-OIData", NID_setct_OIData, 4, &kObjectData[3910],
+     0},
+    {"setct-PI", "setct-PI", NID_setct_PI, 4, &kObjectData[3914], 0},
+    {"setct-PIData", "setct-PIData", NID_setct_PIData, 4, &kObjectData[3918],
+     0},
+    {"setct-PIDataUnsigned", "setct-PIDataUnsigned", NID_setct_PIDataUnsigned,
+     4, &kObjectData[3922], 0},
+    {"setct-HODInput", "setct-HODInput", NID_setct_HODInput, 4,
+     &kObjectData[3926], 0},
+    {"setct-AuthResBaggage", "setct-AuthResBaggage", NID_setct_AuthResBaggage,
+     4, &kObjectData[3930], 0},
+    {"setct-AuthRevReqBaggage", "setct-AuthRevReqBaggage",
+     NID_setct_AuthRevReqBaggage, 4, &kObjectData[3934], 0},
+    {"setct-AuthRevResBaggage", "setct-AuthRevResBaggage",
+     NID_setct_AuthRevResBaggage, 4, &kObjectData[3938], 0},
+    {"setct-CapTokenSeq", "setct-CapTokenSeq", NID_setct_CapTokenSeq, 4,
+     &kObjectData[3942], 0},
+    {"setct-PInitResData", "setct-PInitResData", NID_setct_PInitResData, 4,
+     &kObjectData[3946], 0},
+    {"setct-PI-TBS", "setct-PI-TBS", NID_setct_PI_TBS, 4, &kObjectData[3950],
+     0},
+    {"setct-PResData", "setct-PResData", NID_setct_PResData, 4,
+     &kObjectData[3954], 0},
+    {"setct-AuthReqTBS", "setct-AuthReqTBS", NID_setct_AuthReqTBS, 4,
+     &kObjectData[3958], 0},
+    {"setct-AuthResTBS", "setct-AuthResTBS", NID_setct_AuthResTBS, 4,
+     &kObjectData[3962], 0},
+    {"setct-AuthResTBSX", "setct-AuthResTBSX", NID_setct_AuthResTBSX, 4,
+     &kObjectData[3966], 0},
+    {"setct-AuthTokenTBS", "setct-AuthTokenTBS", NID_setct_AuthTokenTBS, 4,
+     &kObjectData[3970], 0},
+    {"setct-CapTokenData", "setct-CapTokenData", NID_setct_CapTokenData, 4,
+     &kObjectData[3974], 0},
+    {"setct-CapTokenTBS", "setct-CapTokenTBS", NID_setct_CapTokenTBS, 4,
+     &kObjectData[3978], 0},
+    {"setct-AcqCardCodeMsg", "setct-AcqCardCodeMsg", NID_setct_AcqCardCodeMsg,
+     4, &kObjectData[3982], 0},
+    {"setct-AuthRevReqTBS", "setct-AuthRevReqTBS", NID_setct_AuthRevReqTBS, 4,
+     &kObjectData[3986], 0},
+    {"setct-AuthRevResData", "setct-AuthRevResData", NID_setct_AuthRevResData,
+     4, &kObjectData[3990], 0},
+    {"setct-AuthRevResTBS", "setct-AuthRevResTBS", NID_setct_AuthRevResTBS, 4,
+     &kObjectData[3994], 0},
+    {"setct-CapReqTBS", "setct-CapReqTBS", NID_setct_CapReqTBS, 4,
+     &kObjectData[3998], 0},
+    {"setct-CapReqTBSX", "setct-CapReqTBSX", NID_setct_CapReqTBSX, 4,
+     &kObjectData[4002], 0},
+    {"setct-CapResData", "setct-CapResData", NID_setct_CapResData, 4,
+     &kObjectData[4006], 0},
+    {"setct-CapRevReqTBS", "setct-CapRevReqTBS", NID_setct_CapRevReqTBS, 4,
+     &kObjectData[4010], 0},
+    {"setct-CapRevReqTBSX", "setct-CapRevReqTBSX", NID_setct_CapRevReqTBSX, 4,
+     &kObjectData[4014], 0},
+    {"setct-CapRevResData", "setct-CapRevResData", NID_setct_CapRevResData, 4,
+     &kObjectData[4018], 0},
+    {"setct-CredReqTBS", "setct-CredReqTBS", NID_setct_CredReqTBS, 4,
+     &kObjectData[4022], 0},
+    {"setct-CredReqTBSX", "setct-CredReqTBSX", NID_setct_CredReqTBSX, 4,
+     &kObjectData[4026], 0},
+    {"setct-CredResData", "setct-CredResData", NID_setct_CredResData, 4,
+     &kObjectData[4030], 0},
+    {"setct-CredRevReqTBS", "setct-CredRevReqTBS", NID_setct_CredRevReqTBS, 4,
+     &kObjectData[4034], 0},
+    {"setct-CredRevReqTBSX", "setct-CredRevReqTBSX", NID_setct_CredRevReqTBSX,
+     4, &kObjectData[4038], 0},
+    {"setct-CredRevResData", "setct-CredRevResData", NID_setct_CredRevResData,
+     4, &kObjectData[4042], 0},
+    {"setct-PCertReqData", "setct-PCertReqData", NID_setct_PCertReqData, 4,
+     &kObjectData[4046], 0},
+    {"setct-PCertResTBS", "setct-PCertResTBS", NID_setct_PCertResTBS, 4,
+     &kObjectData[4050], 0},
+    {"setct-BatchAdminReqData", "setct-BatchAdminReqData",
+     NID_setct_BatchAdminReqData, 4, &kObjectData[4054], 0},
+    {"setct-BatchAdminResData", "setct-BatchAdminResData",
+     NID_setct_BatchAdminResData, 4, &kObjectData[4058], 0},
+    {"setct-CardCInitResTBS", "setct-CardCInitResTBS",
+     NID_setct_CardCInitResTBS, 4, &kObjectData[4062], 0},
+    {"setct-MeAqCInitResTBS", "setct-MeAqCInitResTBS",
+     NID_setct_MeAqCInitResTBS, 4, &kObjectData[4066], 0},
+    {"setct-RegFormResTBS", "setct-RegFormResTBS", NID_setct_RegFormResTBS, 4,
+     &kObjectData[4070], 0},
+    {"setct-CertReqData", "setct-CertReqData", NID_setct_CertReqData, 4,
+     &kObjectData[4074], 0},
+    {"setct-CertReqTBS", "setct-CertReqTBS", NID_setct_CertReqTBS, 4,
+     &kObjectData[4078], 0},
+    {"setct-CertResData", "setct-CertResData", NID_setct_CertResData, 4,
+     &kObjectData[4082], 0},
+    {"setct-CertInqReqTBS", "setct-CertInqReqTBS", NID_setct_CertInqReqTBS, 4,
+     &kObjectData[4086], 0},
+    {"setct-ErrorTBS", "setct-ErrorTBS", NID_setct_ErrorTBS, 4,
+     &kObjectData[4090], 0},
+    {"setct-PIDualSignedTBE", "setct-PIDualSignedTBE",
+     NID_setct_PIDualSignedTBE, 4, &kObjectData[4094], 0},
+    {"setct-PIUnsignedTBE", "setct-PIUnsignedTBE", NID_setct_PIUnsignedTBE, 4,
+     &kObjectData[4098], 0},
+    {"setct-AuthReqTBE", "setct-AuthReqTBE", NID_setct_AuthReqTBE, 4,
+     &kObjectData[4102], 0},
+    {"setct-AuthResTBE", "setct-AuthResTBE", NID_setct_AuthResTBE, 4,
+     &kObjectData[4106], 0},
+    {"setct-AuthResTBEX", "setct-AuthResTBEX", NID_setct_AuthResTBEX, 4,
+     &kObjectData[4110], 0},
+    {"setct-AuthTokenTBE", "setct-AuthTokenTBE", NID_setct_AuthTokenTBE, 4,
+     &kObjectData[4114], 0},
+    {"setct-CapTokenTBE", "setct-CapTokenTBE", NID_setct_CapTokenTBE, 4,
+     &kObjectData[4118], 0},
+    {"setct-CapTokenTBEX", "setct-CapTokenTBEX", NID_setct_CapTokenTBEX, 4,
+     &kObjectData[4122], 0},
+    {"setct-AcqCardCodeMsgTBE", "setct-AcqCardCodeMsgTBE",
+     NID_setct_AcqCardCodeMsgTBE, 4, &kObjectData[4126], 0},
+    {"setct-AuthRevReqTBE", "setct-AuthRevReqTBE", NID_setct_AuthRevReqTBE, 4,
+     &kObjectData[4130], 0},
+    {"setct-AuthRevResTBE", "setct-AuthRevResTBE", NID_setct_AuthRevResTBE, 4,
+     &kObjectData[4134], 0},
+    {"setct-AuthRevResTBEB", "setct-AuthRevResTBEB", NID_setct_AuthRevResTBEB,
+     4, &kObjectData[4138], 0},
+    {"setct-CapReqTBE", "setct-CapReqTBE", NID_setct_CapReqTBE, 4,
+     &kObjectData[4142], 0},
+    {"setct-CapReqTBEX", "setct-CapReqTBEX", NID_setct_CapReqTBEX, 4,
+     &kObjectData[4146], 0},
+    {"setct-CapResTBE", "setct-CapResTBE", NID_setct_CapResTBE, 4,
+     &kObjectData[4150], 0},
+    {"setct-CapRevReqTBE", "setct-CapRevReqTBE", NID_setct_CapRevReqTBE, 4,
+     &kObjectData[4154], 0},
+    {"setct-CapRevReqTBEX", "setct-CapRevReqTBEX", NID_setct_CapRevReqTBEX, 4,
+     &kObjectData[4158], 0},
+    {"setct-CapRevResTBE", "setct-CapRevResTBE", NID_setct_CapRevResTBE, 4,
+     &kObjectData[4162], 0},
+    {"setct-CredReqTBE", "setct-CredReqTBE", NID_setct_CredReqTBE, 4,
+     &kObjectData[4166], 0},
+    {"setct-CredReqTBEX", "setct-CredReqTBEX", NID_setct_CredReqTBEX, 4,
+     &kObjectData[4170], 0},
+    {"setct-CredResTBE", "setct-CredResTBE", NID_setct_CredResTBE, 4,
+     &kObjectData[4174], 0},
+    {"setct-CredRevReqTBE", "setct-CredRevReqTBE", NID_setct_CredRevReqTBE, 4,
+     &kObjectData[4178], 0},
+    {"setct-CredRevReqTBEX", "setct-CredRevReqTBEX", NID_setct_CredRevReqTBEX,
+     4, &kObjectData[4182], 0},
+    {"setct-CredRevResTBE", "setct-CredRevResTBE", NID_setct_CredRevResTBE, 4,
+     &kObjectData[4186], 0},
+    {"setct-BatchAdminReqTBE", "setct-BatchAdminReqTBE",
+     NID_setct_BatchAdminReqTBE, 4, &kObjectData[4190], 0},
+    {"setct-BatchAdminResTBE", "setct-BatchAdminResTBE",
+     NID_setct_BatchAdminResTBE, 4, &kObjectData[4194], 0},
+    {"setct-RegFormReqTBE", "setct-RegFormReqTBE", NID_setct_RegFormReqTBE, 4,
+     &kObjectData[4198], 0},
+    {"setct-CertReqTBE", "setct-CertReqTBE", NID_setct_CertReqTBE, 4,
+     &kObjectData[4202], 0},
+    {"setct-CertReqTBEX", "setct-CertReqTBEX", NID_setct_CertReqTBEX, 4,
+     &kObjectData[4206], 0},
+    {"setct-CertResTBE", "setct-CertResTBE", NID_setct_CertResTBE, 4,
+     &kObjectData[4210], 0},
+    {"setct-CRLNotificationTBS", "setct-CRLNotificationTBS",
+     NID_setct_CRLNotificationTBS, 4, &kObjectData[4214], 0},
+    {"setct-CRLNotificationResTBS", "setct-CRLNotificationResTBS",
+     NID_setct_CRLNotificationResTBS, 4, &kObjectData[4218], 0},
+    {"setct-BCIDistributionTBS", "setct-BCIDistributionTBS",
+     NID_setct_BCIDistributionTBS, 4, &kObjectData[4222], 0},
+    {"setext-genCrypt", "generic cryptogram", NID_setext_genCrypt, 4,
+     &kObjectData[4226], 0},
+    {"setext-miAuth", "merchant initiated auth", NID_setext_miAuth, 4,
+     &kObjectData[4230], 0},
+    {"setext-pinSecure", "setext-pinSecure", NID_setext_pinSecure, 4,
+     &kObjectData[4234], 0},
+    {"setext-pinAny", "setext-pinAny", NID_setext_pinAny, 4, &kObjectData[4238],
+     0},
+    {"setext-track2", "setext-track2", NID_setext_track2, 4, &kObjectData[4242],
+     0},
+    {"setext-cv", "additional verification", NID_setext_cv, 4,
+     &kObjectData[4246], 0},
+    {"set-policy-root", "set-policy-root", NID_set_policy_root, 4,
+     &kObjectData[4250], 0},
+    {"setCext-hashedRoot", "setCext-hashedRoot", NID_setCext_hashedRoot, 4,
+     &kObjectData[4254], 0},
+    {"setCext-certType", "setCext-certType", NID_setCext_certType, 4,
+     &kObjectData[4258], 0},
+    {"setCext-merchData", "setCext-merchData", NID_setCext_merchData, 4,
+     &kObjectData[4262], 0},
+    {"setCext-cCertRequired", "setCext-cCertRequired",
+     NID_setCext_cCertRequired, 4, &kObjectData[4266], 0},
+    {"setCext-tunneling", "setCext-tunneling", NID_setCext_tunneling, 4,
+     &kObjectData[4270], 0},
+    {"setCext-setExt", "setCext-setExt", NID_setCext_setExt, 4,
+     &kObjectData[4274], 0},
+    {"setCext-setQualf", "setCext-setQualf", NID_setCext_setQualf, 4,
+     &kObjectData[4278], 0},
+    {"setCext-PGWYcapabilities", "setCext-PGWYcapabilities",
+     NID_setCext_PGWYcapabilities, 4, &kObjectData[4282], 0},
+    {"setCext-TokenIdentifier", "setCext-TokenIdentifier",
+     NID_setCext_TokenIdentifier, 4, &kObjectData[4286], 0},
+    {"setCext-Track2Data", "setCext-Track2Data", NID_setCext_Track2Data, 4,
+     &kObjectData[4290], 0},
+    {"setCext-TokenType", "setCext-TokenType", NID_setCext_TokenType, 4,
+     &kObjectData[4294], 0},
+    {"setCext-IssuerCapabilities", "setCext-IssuerCapabilities",
+     NID_setCext_IssuerCapabilities, 4, &kObjectData[4298], 0},
+    {"setAttr-Cert", "setAttr-Cert", NID_setAttr_Cert, 4, &kObjectData[4302],
+     0},
+    {"setAttr-PGWYcap", "payment gateway capabilities", NID_setAttr_PGWYcap, 4,
+     &kObjectData[4306], 0},
+    {"setAttr-TokenType", "setAttr-TokenType", NID_setAttr_TokenType, 4,
+     &kObjectData[4310], 0},
+    {"setAttr-IssCap", "issuer capabilities", NID_setAttr_IssCap, 4,
+     &kObjectData[4314], 0},
+    {"set-rootKeyThumb", "set-rootKeyThumb", NID_set_rootKeyThumb, 5,
+     &kObjectData[4318], 0},
+    {"set-addPolicy", "set-addPolicy", NID_set_addPolicy, 5, &kObjectData[4323],
+     0},
+    {"setAttr-Token-EMV", "setAttr-Token-EMV", NID_setAttr_Token_EMV, 5,
+     &kObjectData[4328], 0},
+    {"setAttr-Token-B0Prime", "setAttr-Token-B0Prime",
+     NID_setAttr_Token_B0Prime, 5, &kObjectData[4333], 0},
+    {"setAttr-IssCap-CVM", "setAttr-IssCap-CVM", NID_setAttr_IssCap_CVM, 5,
+     &kObjectData[4338], 0},
+    {"setAttr-IssCap-T2", "setAttr-IssCap-T2", NID_setAttr_IssCap_T2, 5,
+     &kObjectData[4343], 0},
+    {"setAttr-IssCap-Sig", "setAttr-IssCap-Sig", NID_setAttr_IssCap_Sig, 5,
+     &kObjectData[4348], 0},
+    {"setAttr-GenCryptgrm", "generate cryptogram", NID_setAttr_GenCryptgrm, 6,
+     &kObjectData[4353], 0},
+    {"setAttr-T2Enc", "encrypted track 2", NID_setAttr_T2Enc, 6,
+     &kObjectData[4359], 0},
+    {"setAttr-T2cleartxt", "cleartext track 2", NID_setAttr_T2cleartxt, 6,
+     &kObjectData[4365], 0},
+    {"setAttr-TokICCsig", "ICC or token signature", NID_setAttr_TokICCsig, 6,
+     &kObjectData[4371], 0},
+    {"setAttr-SecDevSig", "secure device signature", NID_setAttr_SecDevSig, 6,
+     &kObjectData[4377], 0},
+    {"set-brand-IATA-ATA", "set-brand-IATA-ATA", NID_set_brand_IATA_ATA, 4,
+     &kObjectData[4383], 0},
+    {"set-brand-Diners", "set-brand-Diners", NID_set_brand_Diners, 4,
+     &kObjectData[4387], 0},
+    {"set-brand-AmericanExpress", "set-brand-AmericanExpress",
+     NID_set_brand_AmericanExpress, 4, &kObjectData[4391], 0},
+    {"set-brand-JCB", "set-brand-JCB", NID_set_brand_JCB, 4, &kObjectData[4395],
+     0},
+    {"set-brand-Visa", "set-brand-Visa", NID_set_brand_Visa, 4,
+     &kObjectData[4399], 0},
+    {"set-brand-MasterCard", "set-brand-MasterCard", NID_set_brand_MasterCard,
+     4, &kObjectData[4403], 0},
+    {"set-brand-Novus", "set-brand-Novus", NID_set_brand_Novus, 5,
+     &kObjectData[4407], 0},
+    {"DES-CDMF", "des-cdmf", NID_des_cdmf, 8, &kObjectData[4412], 0},
+    {"rsaOAEPEncryptionSET", "rsaOAEPEncryptionSET", NID_rsaOAEPEncryptionSET,
+     9, &kObjectData[4420], 0},
+    {"ITU-T", "itu-t", NID_itu_t, 0, NULL, 0},
+    {"JOINT-ISO-ITU-T", "joint-iso-itu-t", NID_joint_iso_itu_t, 0, NULL, 0},
+    {"international-organizations", "International Organizations",
+     NID_international_organizations, 1, &kObjectData[4429], 0},
+    {"msSmartcardLogin", "Microsoft Smartcardlogin", NID_ms_smartcard_login, 10,
+     &kObjectData[4430], 0},
+    {"msUPN", "Microsoft Universal Principal Name", NID_ms_upn, 10,
+     &kObjectData[4440], 0},
+    {"AES-128-CFB1", "aes-128-cfb1", NID_aes_128_cfb1, 0, NULL, 0},
+    {"AES-192-CFB1", "aes-192-cfb1", NID_aes_192_cfb1, 0, NULL, 0},
+    {"AES-256-CFB1", "aes-256-cfb1", NID_aes_256_cfb1, 0, NULL, 0},
+    {"AES-128-CFB8", "aes-128-cfb8", NID_aes_128_cfb8, 0, NULL, 0},
+    {"AES-192-CFB8", "aes-192-cfb8", NID_aes_192_cfb8, 0, NULL, 0},
+    {"AES-256-CFB8", "aes-256-cfb8", NID_aes_256_cfb8, 0, NULL, 0},
+    {"DES-CFB1", "des-cfb1", NID_des_cfb1, 0, NULL, 0},
+    {"DES-CFB8", "des-cfb8", NID_des_cfb8, 0, NULL, 0},
+    {"DES-EDE3-CFB1", "des-ede3-cfb1", NID_des_ede3_cfb1, 0, NULL, 0},
+    {"DES-EDE3-CFB8", "des-ede3-cfb8", NID_des_ede3_cfb8, 0, NULL, 0},
+    {"street", "streetAddress", NID_streetAddress, 3, &kObjectData[4450], 0},
+    {"postalCode", "postalCode", NID_postalCode, 3, &kObjectData[4453], 0},
+    {"id-ppl", "id-ppl", NID_id_ppl, 7, &kObjectData[4456], 0},
+    {"proxyCertInfo", "Proxy Certificate Information", NID_proxyCertInfo, 8,
+     &kObjectData[4463], 0},
+    {"id-ppl-anyLanguage", "Any language", NID_id_ppl_anyLanguage, 8,
+     &kObjectData[4471], 0},
+    {"id-ppl-inheritAll", "Inherit all", NID_id_ppl_inheritAll, 8,
+     &kObjectData[4479], 0},
+    {"nameConstraints", "X509v3 Name Constraints", NID_name_constraints, 3,
+     &kObjectData[4487], 0},
+    {"id-ppl-independent", "Independent", NID_Independent, 8,
+     &kObjectData[4490], 0},
+    {"RSA-SHA256", "sha256WithRSAEncryption", NID_sha256WithRSAEncryption, 9,
+     &kObjectData[4498], 0},
+    {"RSA-SHA384", "sha384WithRSAEncryption", NID_sha384WithRSAEncryption, 9,
+     &kObjectData[4507], 0},
+    {"RSA-SHA512", "sha512WithRSAEncryption", NID_sha512WithRSAEncryption, 9,
+     &kObjectData[4516], 0},
+    {"RSA-SHA224", "sha224WithRSAEncryption", NID_sha224WithRSAEncryption, 9,
+     &kObjectData[4525], 0},
+    {"SHA256", "sha256", NID_sha256, 9, &kObjectData[4534], 0},
+    {"SHA384", "sha384", NID_sha384, 9, &kObjectData[4543], 0},
+    {"SHA512", "sha512", NID_sha512, 9, &kObjectData[4552], 0},
+    {"SHA224", "sha224", NID_sha224, 9, &kObjectData[4561], 0},
+    {"identified-organization", "identified-organization",
+     NID_identified_organization, 1, &kObjectData[4570], 0},
+    {"certicom-arc", "certicom-arc", NID_certicom_arc, 3, &kObjectData[4571],
+     0},
+    {"wap", "wap", NID_wap, 2, &kObjectData[4574], 0},
+    {"wap-wsg", "wap-wsg", NID_wap_wsg, 3, &kObjectData[4576], 0},
+    {"id-characteristic-two-basis", "id-characteristic-two-basis",
+     NID_X9_62_id_characteristic_two_basis, 8, &kObjectData[4579], 0},
+    {"onBasis", "onBasis", NID_X9_62_onBasis, 9, &kObjectData[4587], 0},
+    {"tpBasis", "tpBasis", NID_X9_62_tpBasis, 9, &kObjectData[4596], 0},
+    {"ppBasis", "ppBasis", NID_X9_62_ppBasis, 9, &kObjectData[4605], 0},
+    {"c2pnb163v1", "c2pnb163v1", NID_X9_62_c2pnb163v1, 8, &kObjectData[4614],
+     0},
+    {"c2pnb163v2", "c2pnb163v2", NID_X9_62_c2pnb163v2, 8, &kObjectData[4622],
+     0},
+    {"c2pnb163v3", "c2pnb163v3", NID_X9_62_c2pnb163v3, 8, &kObjectData[4630],
+     0},
+    {"c2pnb176v1", "c2pnb176v1", NID_X9_62_c2pnb176v1, 8, &kObjectData[4638],
+     0},
+    {"c2tnb191v1", "c2tnb191v1", NID_X9_62_c2tnb191v1, 8, &kObjectData[4646],
+     0},
+    {"c2tnb191v2", "c2tnb191v2", NID_X9_62_c2tnb191v2, 8, &kObjectData[4654],
+     0},
+    {"c2tnb191v3", "c2tnb191v3", NID_X9_62_c2tnb191v3, 8, &kObjectData[4662],
+     0},
+    {"c2onb191v4", "c2onb191v4", NID_X9_62_c2onb191v4, 8, &kObjectData[4670],
+     0},
+    {"c2onb191v5", "c2onb191v5", NID_X9_62_c2onb191v5, 8, &kObjectData[4678],
+     0},
+    {"c2pnb208w1", "c2pnb208w1", NID_X9_62_c2pnb208w1, 8, &kObjectData[4686],
+     0},
+    {"c2tnb239v1", "c2tnb239v1", NID_X9_62_c2tnb239v1, 8, &kObjectData[4694],
+     0},
+    {"c2tnb239v2", "c2tnb239v2", NID_X9_62_c2tnb239v2, 8, &kObjectData[4702],
+     0},
+    {"c2tnb239v3", "c2tnb239v3", NID_X9_62_c2tnb239v3, 8, &kObjectData[4710],
+     0},
+    {"c2onb239v4", "c2onb239v4", NID_X9_62_c2onb239v4, 8, &kObjectData[4718],
+     0},
+    {"c2onb239v5", "c2onb239v5", NID_X9_62_c2onb239v5, 8, &kObjectData[4726],
+     0},
+    {"c2pnb272w1", "c2pnb272w1", NID_X9_62_c2pnb272w1, 8, &kObjectData[4734],
+     0},
+    {"c2pnb304w1", "c2pnb304w1", NID_X9_62_c2pnb304w1, 8, &kObjectData[4742],
+     0},
+    {"c2tnb359v1", "c2tnb359v1", NID_X9_62_c2tnb359v1, 8, &kObjectData[4750],
+     0},
+    {"c2pnb368w1", "c2pnb368w1", NID_X9_62_c2pnb368w1, 8, &kObjectData[4758],
+     0},
+    {"c2tnb431r1", "c2tnb431r1", NID_X9_62_c2tnb431r1, 8, &kObjectData[4766],
+     0},
+    {"secp112r1", "secp112r1", NID_secp112r1, 5, &kObjectData[4774], 0},
+    {"secp112r2", "secp112r2", NID_secp112r2, 5, &kObjectData[4779], 0},
+    {"secp128r1", "secp128r1", NID_secp128r1, 5, &kObjectData[4784], 0},
+    {"secp128r2", "secp128r2", NID_secp128r2, 5, &kObjectData[4789], 0},
+    {"secp160k1", "secp160k1", NID_secp160k1, 5, &kObjectData[4794], 0},
+    {"secp160r1", "secp160r1", NID_secp160r1, 5, &kObjectData[4799], 0},
+    {"secp160r2", "secp160r2", NID_secp160r2, 5, &kObjectData[4804], 0},
+    {"secp192k1", "secp192k1", NID_secp192k1, 5, &kObjectData[4809], 0},
+    {"secp224k1", "secp224k1", NID_secp224k1, 5, &kObjectData[4814], 0},
+    {"secp224r1", "secp224r1", NID_secp224r1, 5, &kObjectData[4819], 0},
+    {"secp256k1", "secp256k1", NID_secp256k1, 5, &kObjectData[4824], 0},
+    {"secp384r1", "secp384r1", NID_secp384r1, 5, &kObjectData[4829], 0},
+    {"secp521r1", "secp521r1", NID_secp521r1, 5, &kObjectData[4834], 0},
+    {"sect113r1", "sect113r1", NID_sect113r1, 5, &kObjectData[4839], 0},
+    {"sect113r2", "sect113r2", NID_sect113r2, 5, &kObjectData[4844], 0},
+    {"sect131r1", "sect131r1", NID_sect131r1, 5, &kObjectData[4849], 0},
+    {"sect131r2", "sect131r2", NID_sect131r2, 5, &kObjectData[4854], 0},
+    {"sect163k1", "sect163k1", NID_sect163k1, 5, &kObjectData[4859], 0},
+    {"sect163r1", "sect163r1", NID_sect163r1, 5, &kObjectData[4864], 0},
+    {"sect163r2", "sect163r2", NID_sect163r2, 5, &kObjectData[4869], 0},
+    {"sect193r1", "sect193r1", NID_sect193r1, 5, &kObjectData[4874], 0},
+    {"sect193r2", "sect193r2", NID_sect193r2, 5, &kObjectData[4879], 0},
+    {"sect233k1", "sect233k1", NID_sect233k1, 5, &kObjectData[4884], 0},
+    {"sect233r1", "sect233r1", NID_sect233r1, 5, &kObjectData[4889], 0},
+    {"sect239k1", "sect239k1", NID_sect239k1, 5, &kObjectData[4894], 0},
+    {"sect283k1", "sect283k1", NID_sect283k1, 5, &kObjectData[4899], 0},
+    {"sect283r1", "sect283r1", NID_sect283r1, 5, &kObjectData[4904], 0},
+    {"sect409k1", "sect409k1", NID_sect409k1, 5, &kObjectData[4909], 0},
+    {"sect409r1", "sect409r1", NID_sect409r1, 5, &kObjectData[4914], 0},
+    {"sect571k1", "sect571k1", NID_sect571k1, 5, &kObjectData[4919], 0},
+    {"sect571r1", "sect571r1", NID_sect571r1, 5, &kObjectData[4924], 0},
+    {"wap-wsg-idm-ecid-wtls1", "wap-wsg-idm-ecid-wtls1",
+     NID_wap_wsg_idm_ecid_wtls1, 5, &kObjectData[4929], 0},
+    {"wap-wsg-idm-ecid-wtls3", "wap-wsg-idm-ecid-wtls3",
+     NID_wap_wsg_idm_ecid_wtls3, 5, &kObjectData[4934], 0},
+    {"wap-wsg-idm-ecid-wtls4", "wap-wsg-idm-ecid-wtls4",
+     NID_wap_wsg_idm_ecid_wtls4, 5, &kObjectData[4939], 0},
+    {"wap-wsg-idm-ecid-wtls5", "wap-wsg-idm-ecid-wtls5",
+     NID_wap_wsg_idm_ecid_wtls5, 5, &kObjectData[4944], 0},
+    {"wap-wsg-idm-ecid-wtls6", "wap-wsg-idm-ecid-wtls6",
+     NID_wap_wsg_idm_ecid_wtls6, 5, &kObjectData[4949], 0},
+    {"wap-wsg-idm-ecid-wtls7", "wap-wsg-idm-ecid-wtls7",
+     NID_wap_wsg_idm_ecid_wtls7, 5, &kObjectData[4954], 0},
+    {"wap-wsg-idm-ecid-wtls8", "wap-wsg-idm-ecid-wtls8",
+     NID_wap_wsg_idm_ecid_wtls8, 5, &kObjectData[4959], 0},
+    {"wap-wsg-idm-ecid-wtls9", "wap-wsg-idm-ecid-wtls9",
+     NID_wap_wsg_idm_ecid_wtls9, 5, &kObjectData[4964], 0},
+    {"wap-wsg-idm-ecid-wtls10", "wap-wsg-idm-ecid-wtls10",
+     NID_wap_wsg_idm_ecid_wtls10, 5, &kObjectData[4969], 0},
+    {"wap-wsg-idm-ecid-wtls11", "wap-wsg-idm-ecid-wtls11",
+     NID_wap_wsg_idm_ecid_wtls11, 5, &kObjectData[4974], 0},
+    {"wap-wsg-idm-ecid-wtls12", "wap-wsg-idm-ecid-wtls12",
+     NID_wap_wsg_idm_ecid_wtls12, 5, &kObjectData[4979], 0},
+    {"anyPolicy", "X509v3 Any Policy", NID_any_policy, 4, &kObjectData[4984],
+     0},
+    {"policyMappings", "X509v3 Policy Mappings", NID_policy_mappings, 3,
+     &kObjectData[4988], 0},
+    {"inhibitAnyPolicy", "X509v3 Inhibit Any Policy", NID_inhibit_any_policy, 3,
+     &kObjectData[4991], 0},
+    {"Oakley-EC2N-3", "ipsec3", NID_ipsec3, 0, NULL, 0},
+    {"Oakley-EC2N-4", "ipsec4", NID_ipsec4, 0, NULL, 0},
+    {"CAMELLIA-128-CBC", "camellia-128-cbc", NID_camellia_128_cbc, 11,
+     &kObjectData[4994], 0},
+    {"CAMELLIA-192-CBC", "camellia-192-cbc", NID_camellia_192_cbc, 11,
+     &kObjectData[5005], 0},
+    {"CAMELLIA-256-CBC", "camellia-256-cbc", NID_camellia_256_cbc, 11,
+     &kObjectData[5016], 0},
+    {"CAMELLIA-128-ECB", "camellia-128-ecb", NID_camellia_128_ecb, 8,
+     &kObjectData[5027], 0},
+    {"CAMELLIA-192-ECB", "camellia-192-ecb", NID_camellia_192_ecb, 8,
+     &kObjectData[5035], 0},
+    {"CAMELLIA-256-ECB", "camellia-256-ecb", NID_camellia_256_ecb, 8,
+     &kObjectData[5043], 0},
+    {"CAMELLIA-128-CFB", "camellia-128-cfb", NID_camellia_128_cfb128, 8,
+     &kObjectData[5051], 0},
+    {"CAMELLIA-192-CFB", "camellia-192-cfb", NID_camellia_192_cfb128, 8,
+     &kObjectData[5059], 0},
+    {"CAMELLIA-256-CFB", "camellia-256-cfb", NID_camellia_256_cfb128, 8,
+     &kObjectData[5067], 0},
+    {"CAMELLIA-128-CFB1", "camellia-128-cfb1", NID_camellia_128_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-192-CFB1", "camellia-192-cfb1", NID_camellia_192_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-256-CFB1", "camellia-256-cfb1", NID_camellia_256_cfb1, 0, NULL,
+     0},
+    {"CAMELLIA-128-CFB8", "camellia-128-cfb8", NID_camellia_128_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-192-CFB8", "camellia-192-cfb8", NID_camellia_192_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-256-CFB8", "camellia-256-cfb8", NID_camellia_256_cfb8, 0, NULL,
+     0},
+    {"CAMELLIA-128-OFB", "camellia-128-ofb", NID_camellia_128_ofb128, 8,
+     &kObjectData[5075], 0},
+    {"CAMELLIA-192-OFB", "camellia-192-ofb", NID_camellia_192_ofb128, 8,
+     &kObjectData[5083], 0},
+    {"CAMELLIA-256-OFB", "camellia-256-ofb", NID_camellia_256_ofb128, 8,
+     &kObjectData[5091], 0},
+    {"subjectDirectoryAttributes", "X509v3 Subject Directory Attributes",
+     NID_subject_directory_attributes, 3, &kObjectData[5099], 0},
+    {"issuingDistributionPoint", "X509v3 Issuing Distribution Point",
+     NID_issuing_distribution_point, 3, &kObjectData[5102], 0},
+    {"certificateIssuer", "X509v3 Certificate Issuer", NID_certificate_issuer,
+     3, &kObjectData[5105], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"KISA", "kisa", NID_kisa, 6, &kObjectData[5108], 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {NULL, NULL, NID_undef, 0, NULL, 0},
+    {"SEED-ECB", "seed-ecb", NID_seed_ecb, 8, &kObjectData[5114], 0},
+    {"SEED-CBC", "seed-cbc", NID_seed_cbc, 8, &kObjectData[5122], 0},
+    {"SEED-OFB", "seed-ofb", NID_seed_ofb128, 8, &kObjectData[5130], 0},
+    {"SEED-CFB", "seed-cfb", NID_seed_cfb128, 8, &kObjectData[5138], 0},
+    {"HMAC-MD5", "hmac-md5", NID_hmac_md5, 8, &kObjectData[5146], 0},
+    {"HMAC-SHA1", "hmac-sha1", NID_hmac_sha1, 8, &kObjectData[5154], 0},
+    {"id-PasswordBasedMAC", "password based MAC", NID_id_PasswordBasedMAC, 9,
+     &kObjectData[5162], 0},
+    {"id-DHBasedMac", "Diffie-Hellman based MAC", NID_id_DHBasedMac, 9,
+     &kObjectData[5171], 0},
+    {"id-it-suppLangTags", "id-it-suppLangTags", NID_id_it_suppLangTags, 8,
+     &kObjectData[5180], 0},
+    {"caRepository", "CA Repository", NID_caRepository, 8, &kObjectData[5188],
+     0},
+    {"id-smime-ct-compressedData", "id-smime-ct-compressedData",
+     NID_id_smime_ct_compressedData, 11, &kObjectData[5196], 0},
+    {"id-ct-asciiTextWithCRLF", "id-ct-asciiTextWithCRLF",
+     NID_id_ct_asciiTextWithCRLF, 11, &kObjectData[5207], 0},
+    {"id-aes128-wrap", "id-aes128-wrap", NID_id_aes128_wrap, 9,
+     &kObjectData[5218], 0},
+    {"id-aes192-wrap", "id-aes192-wrap", NID_id_aes192_wrap, 9,
+     &kObjectData[5227], 0},
+    {"id-aes256-wrap", "id-aes256-wrap", NID_id_aes256_wrap, 9,
+     &kObjectData[5236], 0},
+    {"ecdsa-with-Recommended", "ecdsa-with-Recommended",
+     NID_ecdsa_with_Recommended, 7, &kObjectData[5245], 0},
+    {"ecdsa-with-Specified", "ecdsa-with-Specified", NID_ecdsa_with_Specified,
+     7, &kObjectData[5252], 0},
+    {"ecdsa-with-SHA224", "ecdsa-with-SHA224", NID_ecdsa_with_SHA224, 8,
+     &kObjectData[5259], 0},
+    {"ecdsa-with-SHA256", "ecdsa-with-SHA256", NID_ecdsa_with_SHA256, 8,
+     &kObjectData[5267], 0},
+    {"ecdsa-with-SHA384", "ecdsa-with-SHA384", NID_ecdsa_with_SHA384, 8,
+     &kObjectData[5275], 0},
+    {"ecdsa-with-SHA512", "ecdsa-with-SHA512", NID_ecdsa_with_SHA512, 8,
+     &kObjectData[5283], 0},
+    {"hmacWithMD5", "hmacWithMD5", NID_hmacWithMD5, 8, &kObjectData[5291], 0},
+    {"hmacWithSHA224", "hmacWithSHA224", NID_hmacWithSHA224, 8,
+     &kObjectData[5299], 0},
+    {"hmacWithSHA256", "hmacWithSHA256", NID_hmacWithSHA256, 8,
+     &kObjectData[5307], 0},
+    {"hmacWithSHA384", "hmacWithSHA384", NID_hmacWithSHA384, 8,
+     &kObjectData[5315], 0},
+    {"hmacWithSHA512", "hmacWithSHA512", NID_hmacWithSHA512, 8,
+     &kObjectData[5323], 0},
+    {"dsa_with_SHA224", "dsa_with_SHA224", NID_dsa_with_SHA224, 9,
+     &kObjectData[5331], 0},
+    {"dsa_with_SHA256", "dsa_with_SHA256", NID_dsa_with_SHA256, 9,
+     &kObjectData[5340], 0},
+    {"whirlpool", "whirlpool", NID_whirlpool, 6, &kObjectData[5349], 0},
+    {"cryptopro", "cryptopro", NID_cryptopro, 5, &kObjectData[5355], 0},
+    {"cryptocom", "cryptocom", NID_cryptocom, 5, &kObjectData[5360], 0},
+    {"id-GostR3411-94-with-GostR3410-2001",
+     "GOST R 34.11-94 with GOST R 34.10-2001",
+     NID_id_GostR3411_94_with_GostR3410_2001, 6, &kObjectData[5365], 0},
+    {"id-GostR3411-94-with-GostR3410-94",
+     "GOST R 34.11-94 with GOST R 34.10-94",
+     NID_id_GostR3411_94_with_GostR3410_94, 6, &kObjectData[5371], 0},
+    {"md_gost94", "GOST R 34.11-94", NID_id_GostR3411_94, 6, &kObjectData[5377],
+     0},
+    {"id-HMACGostR3411-94", "HMAC GOST 34.11-94", NID_id_HMACGostR3411_94, 6,
+     &kObjectData[5383], 0},
+    {"gost2001", "GOST R 34.10-2001", NID_id_GostR3410_2001, 6,
+     &kObjectData[5389], 0},
+    {"gost94", "GOST R 34.10-94", NID_id_GostR3410_94, 6, &kObjectData[5395],
+     0},
+    {"gost89", "GOST 28147-89", NID_id_Gost28147_89, 6, &kObjectData[5401], 0},
+    {"gost89-cnt", "gost89-cnt", NID_gost89_cnt, 0, NULL, 0},
+    {"gost-mac", "GOST 28147-89 MAC", NID_id_Gost28147_89_MAC, 6,
+     &kObjectData[5407], 0},
+    {"prf-gostr3411-94", "GOST R 34.11-94 PRF", NID_id_GostR3411_94_prf, 6,
+     &kObjectData[5413], 0},
+    {"id-GostR3410-2001DH", "GOST R 34.10-2001 DH", NID_id_GostR3410_2001DH, 6,
+     &kObjectData[5419], 0},
+    {"id-GostR3410-94DH", "GOST R 34.10-94 DH", NID_id_GostR3410_94DH, 6,
+     &kObjectData[5425], 0},
+    {"id-Gost28147-89-CryptoPro-KeyMeshing",
+     "id-Gost28147-89-CryptoPro-KeyMeshing",
+     NID_id_Gost28147_89_CryptoPro_KeyMeshing, 7, &kObjectData[5431], 0},
+    {"id-Gost28147-89-None-KeyMeshing", "id-Gost28147-89-None-KeyMeshing",
+     NID_id_Gost28147_89_None_KeyMeshing, 7, &kObjectData[5438], 0},
+    {"id-GostR3411-94-TestParamSet", "id-GostR3411-94-TestParamSet",
+     NID_id_GostR3411_94_TestParamSet, 7, &kObjectData[5445], 0},
+    {"id-GostR3411-94-CryptoProParamSet", "id-GostR3411-94-CryptoProParamSet",
+     NID_id_GostR3411_94_CryptoProParamSet, 7, &kObjectData[5452], 0},
+    {"id-Gost28147-89-TestParamSet", "id-Gost28147-89-TestParamSet",
+     NID_id_Gost28147_89_TestParamSet, 7, &kObjectData[5459], 0},
+    {"id-Gost28147-89-CryptoPro-A-ParamSet",
+     "id-Gost28147-89-CryptoPro-A-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_A_ParamSet, 7, &kObjectData[5466], 0},
+    {"id-Gost28147-89-CryptoPro-B-ParamSet",
+     "id-Gost28147-89-CryptoPro-B-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_B_ParamSet, 7, &kObjectData[5473], 0},
+    {"id-Gost28147-89-CryptoPro-C-ParamSet",
+     "id-Gost28147-89-CryptoPro-C-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_C_ParamSet, 7, &kObjectData[5480], 0},
+    {"id-Gost28147-89-CryptoPro-D-ParamSet",
+     "id-Gost28147-89-CryptoPro-D-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_D_ParamSet, 7, &kObjectData[5487], 0},
+    {"id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet",
+     "id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet, 7, &kObjectData[5494],
+     0},
+    {"id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet",
+     "id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet, 7, &kObjectData[5501],
+     0},
+    {"id-Gost28147-89-CryptoPro-RIC-1-ParamSet",
+     "id-Gost28147-89-CryptoPro-RIC-1-ParamSet",
+     NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet, 7, &kObjectData[5508], 0},
+    {"id-GostR3410-94-TestParamSet", "id-GostR3410-94-TestParamSet",
+     NID_id_GostR3410_94_TestParamSet, 7, &kObjectData[5515], 0},
+    {"id-GostR3410-94-CryptoPro-A-ParamSet",
+     "id-GostR3410-94-CryptoPro-A-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_A_ParamSet, 7, &kObjectData[5522], 0},
+    {"id-GostR3410-94-CryptoPro-B-ParamSet",
+     "id-GostR3410-94-CryptoPro-B-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_B_ParamSet, 7, &kObjectData[5529], 0},
+    {"id-GostR3410-94-CryptoPro-C-ParamSet",
+     "id-GostR3410-94-CryptoPro-C-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_C_ParamSet, 7, &kObjectData[5536], 0},
+    {"id-GostR3410-94-CryptoPro-D-ParamSet",
+     "id-GostR3410-94-CryptoPro-D-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_D_ParamSet, 7, &kObjectData[5543], 0},
+    {"id-GostR3410-94-CryptoPro-XchA-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchA-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchA_ParamSet, 7, &kObjectData[5550], 0},
+    {"id-GostR3410-94-CryptoPro-XchB-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchB-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchB_ParamSet, 7, &kObjectData[5557], 0},
+    {"id-GostR3410-94-CryptoPro-XchC-ParamSet",
+     "id-GostR3410-94-CryptoPro-XchC-ParamSet",
+     NID_id_GostR3410_94_CryptoPro_XchC_ParamSet, 7, &kObjectData[5564], 0},
+    {"id-GostR3410-2001-TestParamSet", "id-GostR3410-2001-TestParamSet",
+     NID_id_GostR3410_2001_TestParamSet, 7, &kObjectData[5571], 0},
+    {"id-GostR3410-2001-CryptoPro-A-ParamSet",
+     "id-GostR3410-2001-CryptoPro-A-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_A_ParamSet, 7, &kObjectData[5578], 0},
+    {"id-GostR3410-2001-CryptoPro-B-ParamSet",
+     "id-GostR3410-2001-CryptoPro-B-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_B_ParamSet, 7, &kObjectData[5585], 0},
+    {"id-GostR3410-2001-CryptoPro-C-ParamSet",
+     "id-GostR3410-2001-CryptoPro-C-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_C_ParamSet, 7, &kObjectData[5592], 0},
+    {"id-GostR3410-2001-CryptoPro-XchA-ParamSet",
+     "id-GostR3410-2001-CryptoPro-XchA-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet, 7, &kObjectData[5599], 0},
+    {"id-GostR3410-2001-CryptoPro-XchB-ParamSet",
+     "id-GostR3410-2001-CryptoPro-XchB-ParamSet",
+     NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet, 7, &kObjectData[5606], 0},
+    {"id-GostR3410-94-a", "id-GostR3410-94-a", NID_id_GostR3410_94_a, 7,
+     &kObjectData[5613], 0},
+    {"id-GostR3410-94-aBis", "id-GostR3410-94-aBis", NID_id_GostR3410_94_aBis,
+     7, &kObjectData[5620], 0},
+    {"id-GostR3410-94-b", "id-GostR3410-94-b", NID_id_GostR3410_94_b, 7,
+     &kObjectData[5627], 0},
+    {"id-GostR3410-94-bBis", "id-GostR3410-94-bBis", NID_id_GostR3410_94_bBis,
+     7, &kObjectData[5634], 0},
+    {"id-Gost28147-89-cc", "GOST 28147-89 Cryptocom ParamSet",
+     NID_id_Gost28147_89_cc, 8, &kObjectData[5641], 0},
+    {"gost94cc", "GOST 34.10-94 Cryptocom", NID_id_GostR3410_94_cc, 8,
+     &kObjectData[5649], 0},
+    {"gost2001cc", "GOST 34.10-2001 Cryptocom", NID_id_GostR3410_2001_cc, 8,
+     &kObjectData[5657], 0},
+    {"id-GostR3411-94-with-GostR3410-94-cc",
+     "GOST R 34.11-94 with GOST R 34.10-94 Cryptocom",
+     NID_id_GostR3411_94_with_GostR3410_94_cc, 8, &kObjectData[5665], 0},
+    {"id-GostR3411-94-with-GostR3410-2001-cc",
+     "GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom",
+     NID_id_GostR3411_94_with_GostR3410_2001_cc, 8, &kObjectData[5673], 0},
+    {"id-GostR3410-2001-ParamSet-cc",
+     "GOST R 3410-2001 Parameter Set Cryptocom",
+     NID_id_GostR3410_2001_ParamSet_cc, 8, &kObjectData[5681], 0},
+    {"HMAC", "hmac", NID_hmac, 0, NULL, 0},
+    {"LocalKeySet", "Microsoft Local Key set", NID_LocalKeySet, 9,
+     &kObjectData[5689], 0},
+    {"freshestCRL", "X509v3 Freshest CRL", NID_freshest_crl, 3,
+     &kObjectData[5698], 0},
+    {"id-on-permanentIdentifier", "Permanent Identifier",
+     NID_id_on_permanentIdentifier, 8, &kObjectData[5701], 0},
+    {"searchGuide", "searchGuide", NID_searchGuide, 3, &kObjectData[5709], 0},
+    {"businessCategory", "businessCategory", NID_businessCategory, 3,
+     &kObjectData[5712], 0},
+    {"postalAddress", "postalAddress", NID_postalAddress, 3, &kObjectData[5715],
+     0},
+    {"postOfficeBox", "postOfficeBox", NID_postOfficeBox, 3, &kObjectData[5718],
+     0},
+    {"physicalDeliveryOfficeName", "physicalDeliveryOfficeName",
+     NID_physicalDeliveryOfficeName, 3, &kObjectData[5721], 0},
+    {"telephoneNumber", "telephoneNumber", NID_telephoneNumber, 3,
+     &kObjectData[5724], 0},
+    {"telexNumber", "telexNumber", NID_telexNumber, 3, &kObjectData[5727], 0},
+    {"teletexTerminalIdentifier", "teletexTerminalIdentifier",
+     NID_teletexTerminalIdentifier, 3, &kObjectData[5730], 0},
+    {"facsimileTelephoneNumber", "facsimileTelephoneNumber",
+     NID_facsimileTelephoneNumber, 3, &kObjectData[5733], 0},
+    {"x121Address", "x121Address", NID_x121Address, 3, &kObjectData[5736], 0},
+    {"internationaliSDNNumber", "internationaliSDNNumber",
+     NID_internationaliSDNNumber, 3, &kObjectData[5739], 0},
+    {"registeredAddress", "registeredAddress", NID_registeredAddress, 3,
+     &kObjectData[5742], 0},
+    {"destinationIndicator", "destinationIndicator", NID_destinationIndicator,
+     3, &kObjectData[5745], 0},
+    {"preferredDeliveryMethod", "preferredDeliveryMethod",
+     NID_preferredDeliveryMethod, 3, &kObjectData[5748], 0},
+    {"presentationAddress", "presentationAddress", NID_presentationAddress, 3,
+     &kObjectData[5751], 0},
+    {"supportedApplicationContext", "supportedApplicationContext",
+     NID_supportedApplicationContext, 3, &kObjectData[5754], 0},
+    {"member", "member", NID_member, 3, &kObjectData[5757], 0},
+    {"owner", "owner", NID_owner, 3, &kObjectData[5760], 0},
+    {"roleOccupant", "roleOccupant", NID_roleOccupant, 3, &kObjectData[5763],
+     0},
+    {"seeAlso", "seeAlso", NID_seeAlso, 3, &kObjectData[5766], 0},
+    {"userPassword", "userPassword", NID_userPassword, 3, &kObjectData[5769],
+     0},
+    {"userCertificate", "userCertificate", NID_userCertificate, 3,
+     &kObjectData[5772], 0},
+    {"cACertificate", "cACertificate", NID_cACertificate, 3, &kObjectData[5775],
+     0},
+    {"authorityRevocationList", "authorityRevocationList",
+     NID_authorityRevocationList, 3, &kObjectData[5778], 0},
+    {"certificateRevocationList", "certificateRevocationList",
+     NID_certificateRevocationList, 3, &kObjectData[5781], 0},
+    {"crossCertificatePair", "crossCertificatePair", NID_crossCertificatePair,
+     3, &kObjectData[5784], 0},
+    {"enhancedSearchGuide", "enhancedSearchGuide", NID_enhancedSearchGuide, 3,
+     &kObjectData[5787], 0},
+    {"protocolInformation", "protocolInformation", NID_protocolInformation, 3,
+     &kObjectData[5790], 0},
+    {"distinguishedName", "distinguishedName", NID_distinguishedName, 3,
+     &kObjectData[5793], 0},
+    {"uniqueMember", "uniqueMember", NID_uniqueMember, 3, &kObjectData[5796],
+     0},
+    {"houseIdentifier", "houseIdentifier", NID_houseIdentifier, 3,
+     &kObjectData[5799], 0},
+    {"supportedAlgorithms", "supportedAlgorithms", NID_supportedAlgorithms, 3,
+     &kObjectData[5802], 0},
+    {"deltaRevocationList", "deltaRevocationList", NID_deltaRevocationList, 3,
+     &kObjectData[5805], 0},
+    {"dmdName", "dmdName", NID_dmdName, 3, &kObjectData[5808], 0},
+    {"id-alg-PWRI-KEK", "id-alg-PWRI-KEK", NID_id_alg_PWRI_KEK, 11,
+     &kObjectData[5811], 0},
+    {"CMAC", "cmac", NID_cmac, 0, NULL, 0},
+    {"id-aes128-GCM", "aes-128-gcm", NID_aes_128_gcm, 9, &kObjectData[5822], 0},
+    {"id-aes128-CCM", "aes-128-ccm", NID_aes_128_ccm, 9, &kObjectData[5831], 0},
+    {"id-aes128-wrap-pad", "id-aes128-wrap-pad", NID_id_aes128_wrap_pad, 9,
+     &kObjectData[5840], 0},
+    {"id-aes192-GCM", "aes-192-gcm", NID_aes_192_gcm, 9, &kObjectData[5849], 0},
+    {"id-aes192-CCM", "aes-192-ccm", NID_aes_192_ccm, 9, &kObjectData[5858], 0},
+    {"id-aes192-wrap-pad", "id-aes192-wrap-pad", NID_id_aes192_wrap_pad, 9,
+     &kObjectData[5867], 0},
+    {"id-aes256-GCM", "aes-256-gcm", NID_aes_256_gcm, 9, &kObjectData[5876], 0},
+    {"id-aes256-CCM", "aes-256-ccm", NID_aes_256_ccm, 9, &kObjectData[5885], 0},
+    {"id-aes256-wrap-pad", "id-aes256-wrap-pad", NID_id_aes256_wrap_pad, 9,
+     &kObjectData[5894], 0},
+    {"AES-128-CTR", "aes-128-ctr", NID_aes_128_ctr, 0, NULL, 0},
+    {"AES-192-CTR", "aes-192-ctr", NID_aes_192_ctr, 0, NULL, 0},
+    {"AES-256-CTR", "aes-256-ctr", NID_aes_256_ctr, 0, NULL, 0},
+    {"id-camellia128-wrap", "id-camellia128-wrap", NID_id_camellia128_wrap, 11,
+     &kObjectData[5903], 0},
+    {"id-camellia192-wrap", "id-camellia192-wrap", NID_id_camellia192_wrap, 11,
+     &kObjectData[5914], 0},
+    {"id-camellia256-wrap", "id-camellia256-wrap", NID_id_camellia256_wrap, 11,
+     &kObjectData[5925], 0},
+    {"anyExtendedKeyUsage", "Any Extended Key Usage", NID_anyExtendedKeyUsage,
+     4, &kObjectData[5936], 0},
+    {"MGF1", "mgf1", NID_mgf1, 9, &kObjectData[5940], 0},
+    {"RSASSA-PSS", "rsassaPss", NID_rsassaPss, 9, &kObjectData[5949], 0},
+    {"AES-128-XTS", "aes-128-xts", NID_aes_128_xts, 0, NULL, 0},
+    {"AES-256-XTS", "aes-256-xts", NID_aes_256_xts, 0, NULL, 0},
+    {"RC4-HMAC-MD5", "rc4-hmac-md5", NID_rc4_hmac_md5, 0, NULL, 0},
+    {"AES-128-CBC-HMAC-SHA1", "aes-128-cbc-hmac-sha1",
+     NID_aes_128_cbc_hmac_sha1, 0, NULL, 0},
+    {"AES-192-CBC-HMAC-SHA1", "aes-192-cbc-hmac-sha1",
+     NID_aes_192_cbc_hmac_sha1, 0, NULL, 0},
+    {"AES-256-CBC-HMAC-SHA1", "aes-256-cbc-hmac-sha1",
+     NID_aes_256_cbc_hmac_sha1, 0, NULL, 0},
+    {"RSAES-OAEP", "rsaesOaep", NID_rsaesOaep, 9, &kObjectData[5958], 0},
+    {"dhpublicnumber", "X9.42 DH", NID_dhpublicnumber, 7, &kObjectData[5967],
+     0},
+    {"brainpoolP160r1", "brainpoolP160r1", NID_brainpoolP160r1, 9,
+     &kObjectData[5974], 0},
+    {"brainpoolP160t1", "brainpoolP160t1", NID_brainpoolP160t1, 9,
+     &kObjectData[5983], 0},
+    {"brainpoolP192r1", "brainpoolP192r1", NID_brainpoolP192r1, 9,
+     &kObjectData[5992], 0},
+    {"brainpoolP192t1", "brainpoolP192t1", NID_brainpoolP192t1, 9,
+     &kObjectData[6001], 0},
+    {"brainpoolP224r1", "brainpoolP224r1", NID_brainpoolP224r1, 9,
+     &kObjectData[6010], 0},
+    {"brainpoolP224t1", "brainpoolP224t1", NID_brainpoolP224t1, 9,
+     &kObjectData[6019], 0},
+    {"brainpoolP256r1", "brainpoolP256r1", NID_brainpoolP256r1, 9,
+     &kObjectData[6028], 0},
+    {"brainpoolP256t1", "brainpoolP256t1", NID_brainpoolP256t1, 9,
+     &kObjectData[6037], 0},
+    {"brainpoolP320r1", "brainpoolP320r1", NID_brainpoolP320r1, 9,
+     &kObjectData[6046], 0},
+    {"brainpoolP320t1", "brainpoolP320t1", NID_brainpoolP320t1, 9,
+     &kObjectData[6055], 0},
+    {"brainpoolP384r1", "brainpoolP384r1", NID_brainpoolP384r1, 9,
+     &kObjectData[6064], 0},
+    {"brainpoolP384t1", "brainpoolP384t1", NID_brainpoolP384t1, 9,
+     &kObjectData[6073], 0},
+    {"brainpoolP512r1", "brainpoolP512r1", NID_brainpoolP512r1, 9,
+     &kObjectData[6082], 0},
+    {"brainpoolP512t1", "brainpoolP512t1", NID_brainpoolP512t1, 9,
+     &kObjectData[6091], 0},
+    {"PSPECIFIED", "pSpecified", NID_pSpecified, 9, &kObjectData[6100], 0},
+    {"dhSinglePass-stdDH-sha1kdf-scheme", "dhSinglePass-stdDH-sha1kdf-scheme",
+     NID_dhSinglePass_stdDH_sha1kdf_scheme, 9, &kObjectData[6109], 0},
+    {"dhSinglePass-stdDH-sha224kdf-scheme",
+     "dhSinglePass-stdDH-sha224kdf-scheme",
+     NID_dhSinglePass_stdDH_sha224kdf_scheme, 6, &kObjectData[6118], 0},
+    {"dhSinglePass-stdDH-sha256kdf-scheme",
+     "dhSinglePass-stdDH-sha256kdf-scheme",
+     NID_dhSinglePass_stdDH_sha256kdf_scheme, 6, &kObjectData[6124], 0},
+    {"dhSinglePass-stdDH-sha384kdf-scheme",
+     "dhSinglePass-stdDH-sha384kdf-scheme",
+     NID_dhSinglePass_stdDH_sha384kdf_scheme, 6, &kObjectData[6130], 0},
+    {"dhSinglePass-stdDH-sha512kdf-scheme",
+     "dhSinglePass-stdDH-sha512kdf-scheme",
+     NID_dhSinglePass_stdDH_sha512kdf_scheme, 6, &kObjectData[6136], 0},
+    {"dhSinglePass-cofactorDH-sha1kdf-scheme",
+     "dhSinglePass-cofactorDH-sha1kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha1kdf_scheme, 9, &kObjectData[6142], 0},
+    {"dhSinglePass-cofactorDH-sha224kdf-scheme",
+     "dhSinglePass-cofactorDH-sha224kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha224kdf_scheme, 6, &kObjectData[6151], 0},
+    {"dhSinglePass-cofactorDH-sha256kdf-scheme",
+     "dhSinglePass-cofactorDH-sha256kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha256kdf_scheme, 6, &kObjectData[6157], 0},
+    {"dhSinglePass-cofactorDH-sha384kdf-scheme",
+     "dhSinglePass-cofactorDH-sha384kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha384kdf_scheme, 6, &kObjectData[6163], 0},
+    {"dhSinglePass-cofactorDH-sha512kdf-scheme",
+     "dhSinglePass-cofactorDH-sha512kdf-scheme",
+     NID_dhSinglePass_cofactorDH_sha512kdf_scheme, 6, &kObjectData[6169], 0},
+    {"dh-std-kdf", "dh-std-kdf", NID_dh_std_kdf, 0, NULL, 0},
+    {"dh-cofactor-kdf", "dh-cofactor-kdf", NID_dh_cofactor_kdf, 0, NULL, 0},
+    {"X25519", "X25519", NID_X25519, 3, &kObjectData[6175], 0},
+    {"ED25519", "ED25519", NID_ED25519, 3, &kObjectData[6178], 0},
+    {"ChaCha20-Poly1305", "chacha20-poly1305", NID_chacha20_poly1305, 0, NULL,
+     0},
+    {"KxRSA", "kx-rsa", NID_kx_rsa, 0, NULL, 0},
+    {"KxECDHE", "kx-ecdhe", NID_kx_ecdhe, 0, NULL, 0},
+    {"KxPSK", "kx-psk", NID_kx_psk, 0, NULL, 0},
+    {"AuthRSA", "auth-rsa", NID_auth_rsa, 0, NULL, 0},
+    {"AuthECDSA", "auth-ecdsa", NID_auth_ecdsa, 0, NULL, 0},
+    {"AuthPSK", "auth-psk", NID_auth_psk, 0, NULL, 0},
+    {"KxANY", "kx-any", NID_kx_any, 0, NULL, 0},
+    {"AuthANY", "auth-any", NID_auth_any, 0, NULL, 0},
+    {"CECPQ2", "CECPQ2", NID_CECPQ2, 0, NULL, 0},
+    {"ED448", "ED448", NID_ED448, 3, &kObjectData[6181], 0},
+    {"X448", "X448", NID_X448, 3, &kObjectData[6184], 0},
+};
+
+static const uint16_t kNIDsInShortNameOrder[] = {
+    364 /* AD_DVCS */,
+    419 /* AES-128-CBC */,
+    916 /* AES-128-CBC-HMAC-SHA1 */,
+    421 /* AES-128-CFB */,
+    650 /* AES-128-CFB1 */,
+    653 /* AES-128-CFB8 */,
+    904 /* AES-128-CTR */,
+    418 /* AES-128-ECB */,
+    420 /* AES-128-OFB */,
+    913 /* AES-128-XTS */,
+    423 /* AES-192-CBC */,
+    917 /* AES-192-CBC-HMAC-SHA1 */,
+    425 /* AES-192-CFB */,
+    651 /* AES-192-CFB1 */,
+    654 /* AES-192-CFB8 */,
+    905 /* AES-192-CTR */,
+    422 /* AES-192-ECB */,
+    424 /* AES-192-OFB */,
+    427 /* AES-256-CBC */,
+    918 /* AES-256-CBC-HMAC-SHA1 */,
+    429 /* AES-256-CFB */,
+    652 /* AES-256-CFB1 */,
+    655 /* AES-256-CFB8 */,
+    906 /* AES-256-CTR */,
+    426 /* AES-256-ECB */,
+    428 /* AES-256-OFB */,
+    914 /* AES-256-XTS */,
+    958 /* AuthANY */,
+    955 /* AuthECDSA */,
+    956 /* AuthPSK */,
+    954 /* AuthRSA */,
+    91 /* BF-CBC */,
+    93 /* BF-CFB */,
+    92 /* BF-ECB */,
+    94 /* BF-OFB */,
+    14 /* C */,
+    751 /* CAMELLIA-128-CBC */,
+    757 /* CAMELLIA-128-CFB */,
+    760 /* CAMELLIA-128-CFB1 */,
+    763 /* CAMELLIA-128-CFB8 */,
+    754 /* CAMELLIA-128-ECB */,
+    766 /* CAMELLIA-128-OFB */,
+    752 /* CAMELLIA-192-CBC */,
+    758 /* CAMELLIA-192-CFB */,
+    761 /* CAMELLIA-192-CFB1 */,
+    764 /* CAMELLIA-192-CFB8 */,
+    755 /* CAMELLIA-192-ECB */,
+    767 /* CAMELLIA-192-OFB */,
+    753 /* CAMELLIA-256-CBC */,
+    759 /* CAMELLIA-256-CFB */,
+    762 /* CAMELLIA-256-CFB1 */,
+    765 /* CAMELLIA-256-CFB8 */,
+    756 /* CAMELLIA-256-ECB */,
+    768 /* CAMELLIA-256-OFB */,
+    108 /* CAST5-CBC */,
+    110 /* CAST5-CFB */,
+    109 /* CAST5-ECB */,
+    111 /* CAST5-OFB */,
+    959 /* CECPQ2 */,
+    894 /* CMAC */,
+    13 /* CN */,
+    141 /* CRLReason */,
+    417 /* CSPName */,
+    950 /* ChaCha20-Poly1305 */,
+    367 /* CrlID */,
+    391 /* DC */,
+    31 /* DES-CBC */,
+    643 /* DES-CDMF */,
+    30 /* DES-CFB */,
+    656 /* DES-CFB1 */,
+    657 /* DES-CFB8 */,
+    29 /* DES-ECB */,
+    32 /* DES-EDE */,
+    43 /* DES-EDE-CBC */,
+    60 /* DES-EDE-CFB */,
+    62 /* DES-EDE-OFB */,
+    33 /* DES-EDE3 */,
+    44 /* DES-EDE3-CBC */,
+    61 /* DES-EDE3-CFB */,
+    658 /* DES-EDE3-CFB1 */,
+    659 /* DES-EDE3-CFB8 */,
+    63 /* DES-EDE3-OFB */,
+    45 /* DES-OFB */,
+    80 /* DESX-CBC */,
+    380 /* DOD */,
+    116 /* DSA */,
+    66 /* DSA-SHA */,
+    113 /* DSA-SHA1 */,
+    70 /* DSA-SHA1-old */,
+    67 /* DSA-old */,
+    297 /* DVCS */,
+    949 /* ED25519 */,
+    960 /* ED448 */,
+    99 /* GN */,
+    855 /* HMAC */,
+    780 /* HMAC-MD5 */,
+    781 /* HMAC-SHA1 */,
+    381 /* IANA */,
+    34 /* IDEA-CBC */,
+    35 /* IDEA-CFB */,
+    36 /* IDEA-ECB */,
+    46 /* IDEA-OFB */,
+    181 /* ISO */,
+    183 /* ISO-US */,
+    645 /* ITU-T */,
+    646 /* JOINT-ISO-ITU-T */,
+    773 /* KISA */,
+    957 /* KxANY */,
+    952 /* KxECDHE */,
+    953 /* KxPSK */,
+    951 /* KxRSA */,
+    15 /* L */,
+    856 /* LocalKeySet */,
+    3 /* MD2 */,
+    257 /* MD4 */,
+    4 /* MD5 */,
+    114 /* MD5-SHA1 */,
+    95 /* MDC2 */,
+    911 /* MGF1 */,
+    388 /* Mail */,
+    57 /* Netscape */,
+    366 /* Nonce */,
+    17 /* O */,
+    178 /* OCSP */,
+    180 /* OCSPSigning */,
+    379 /* ORG */,
+    18 /* OU */,
+    749 /* Oakley-EC2N-3 */,
+    750 /* Oakley-EC2N-4 */,
+    9 /* PBE-MD2-DES */,
+    168 /* PBE-MD2-RC2-64 */,
+    10 /* PBE-MD5-DES */,
+    169 /* PBE-MD5-RC2-64 */,
+    147 /* PBE-SHA1-2DES */,
+    146 /* PBE-SHA1-3DES */,
+    170 /* PBE-SHA1-DES */,
+    148 /* PBE-SHA1-RC2-128 */,
+    149 /* PBE-SHA1-RC2-40 */,
+    68 /* PBE-SHA1-RC2-64 */,
+    144 /* PBE-SHA1-RC4-128 */,
+    145 /* PBE-SHA1-RC4-40 */,
+    161 /* PBES2 */,
+    69 /* PBKDF2 */,
+    162 /* PBMAC1 */,
+    127 /* PKIX */,
+    935 /* PSPECIFIED */,
+    98 /* RC2-40-CBC */,
+    166 /* RC2-64-CBC */,
+    37 /* RC2-CBC */,
+    39 /* RC2-CFB */,
+    38 /* RC2-ECB */,
+    40 /* RC2-OFB */,
+    5 /* RC4 */,
+    97 /* RC4-40 */,
+    915 /* RC4-HMAC-MD5 */,
+    120 /* RC5-CBC */,
+    122 /* RC5-CFB */,
+    121 /* RC5-ECB */,
+    123 /* RC5-OFB */,
+    117 /* RIPEMD160 */,
+    19 /* RSA */,
+    7 /* RSA-MD2 */,
+    396 /* RSA-MD4 */,
+    8 /* RSA-MD5 */,
+    96 /* RSA-MDC2 */,
+    104 /* RSA-NP-MD5 */,
+    119 /* RSA-RIPEMD160 */,
+    42 /* RSA-SHA */,
+    65 /* RSA-SHA1 */,
+    115 /* RSA-SHA1-2 */,
+    671 /* RSA-SHA224 */,
+    668 /* RSA-SHA256 */,
+    669 /* RSA-SHA384 */,
+    670 /* RSA-SHA512 */,
+    919 /* RSAES-OAEP */,
+    912 /* RSASSA-PSS */,
+    777 /* SEED-CBC */,
+    779 /* SEED-CFB */,
+    776 /* SEED-ECB */,
+    778 /* SEED-OFB */,
+    41 /* SHA */,
+    64 /* SHA1 */,
+    675 /* SHA224 */,
+    672 /* SHA256 */,
+    673 /* SHA384 */,
+    674 /* SHA512 */,
+    188 /* SMIME */,
+    167 /* SMIME-CAPS */,
+    100 /* SN */,
+    16 /* ST */,
+    143 /* SXNetID */,
+    458 /* UID */,
+    0 /* UNDEF */,
+    948 /* X25519 */,
+    961 /* X448 */,
+    11 /* X500 */,
+    378 /* X500algorithms */,
+    12 /* X509 */,
+    184 /* X9-57 */,
+    185 /* X9cm */,
+    125 /* ZLIB */,
+    478 /* aRecord */,
+    289 /* aaControls */,
+    287 /* ac-auditEntity */,
+    397 /* ac-proxying */,
+    288 /* ac-targeting */,
+    368 /* acceptableResponses */,
+    446 /* account */,
+    363 /* ad_timestamping */,
+    376 /* algorithm */,
+    405 /* ansi-X9-62 */,
+    910 /* anyExtendedKeyUsage */,
+    746 /* anyPolicy */,
+    370 /* archiveCutoff */,
+    484 /* associatedDomain */,
+    485 /* associatedName */,
+    501 /* audio */,
+    177 /* authorityInfoAccess */,
+    90 /* authorityKeyIdentifier */,
+    882 /* authorityRevocationList */,
+    87 /* basicConstraints */,
+    365 /* basicOCSPResponse */,
+    285 /* biometricInfo */,
+    921 /* brainpoolP160r1 */,
+    922 /* brainpoolP160t1 */,
+    923 /* brainpoolP192r1 */,
+    924 /* brainpoolP192t1 */,
+    925 /* brainpoolP224r1 */,
+    926 /* brainpoolP224t1 */,
+    927 /* brainpoolP256r1 */,
+    928 /* brainpoolP256t1 */,
+    929 /* brainpoolP320r1 */,
+    930 /* brainpoolP320t1 */,
+    931 /* brainpoolP384r1 */,
+    932 /* brainpoolP384t1 */,
+    933 /* brainpoolP512r1 */,
+    934 /* brainpoolP512t1 */,
+    494 /* buildingName */,
+    860 /* businessCategory */,
+    691 /* c2onb191v4 */,
+    692 /* c2onb191v5 */,
+    697 /* c2onb239v4 */,
+    698 /* c2onb239v5 */,
+    684 /* c2pnb163v1 */,
+    685 /* c2pnb163v2 */,
+    686 /* c2pnb163v3 */,
+    687 /* c2pnb176v1 */,
+    693 /* c2pnb208w1 */,
+    699 /* c2pnb272w1 */,
+    700 /* c2pnb304w1 */,
+    702 /* c2pnb368w1 */,
+    688 /* c2tnb191v1 */,
+    689 /* c2tnb191v2 */,
+    690 /* c2tnb191v3 */,
+    694 /* c2tnb239v1 */,
+    695 /* c2tnb239v2 */,
+    696 /* c2tnb239v3 */,
+    701 /* c2tnb359v1 */,
+    703 /* c2tnb431r1 */,
+    881 /* cACertificate */,
+    483 /* cNAMERecord */,
+    179 /* caIssuers */,
+    785 /* caRepository */,
+    443 /* caseIgnoreIA5StringSyntax */,
+    152 /* certBag */,
+    677 /* certicom-arc */,
+    771 /* certificateIssuer */,
+    89 /* certificatePolicies */,
+    883 /* certificateRevocationList */,
+    54 /* challengePassword */,
+    407 /* characteristic-two-field */,
+    395 /* clearance */,
+    130 /* clientAuth */,
+    131 /* codeSigning */,
+    50 /* contentType */,
+    53 /* countersignature */,
+    153 /* crlBag */,
+    103 /* crlDistributionPoints */,
+    88 /* crlNumber */,
+    884 /* crossCertificatePair */,
+    806 /* cryptocom */,
+    805 /* cryptopro */,
+    500 /* dITRedirect */,
+    451 /* dNSDomain */,
+    495 /* dSAQuality */,
+    434 /* data */,
+    390 /* dcobject */,
+    140 /* deltaCRL */,
+    891 /* deltaRevocationList */,
+    107 /* description */,
+    871 /* destinationIndicator */,
+    947 /* dh-cofactor-kdf */,
+    946 /* dh-std-kdf */,
+    28 /* dhKeyAgreement */,
+    941 /* dhSinglePass-cofactorDH-sha1kdf-scheme */,
+    942 /* dhSinglePass-cofactorDH-sha224kdf-scheme */,
+    943 /* dhSinglePass-cofactorDH-sha256kdf-scheme */,
+    944 /* dhSinglePass-cofactorDH-sha384kdf-scheme */,
+    945 /* dhSinglePass-cofactorDH-sha512kdf-scheme */,
+    936 /* dhSinglePass-stdDH-sha1kdf-scheme */,
+    937 /* dhSinglePass-stdDH-sha224kdf-scheme */,
+    938 /* dhSinglePass-stdDH-sha256kdf-scheme */,
+    939 /* dhSinglePass-stdDH-sha384kdf-scheme */,
+    940 /* dhSinglePass-stdDH-sha512kdf-scheme */,
+    920 /* dhpublicnumber */,
+    382 /* directory */,
+    887 /* distinguishedName */,
+    892 /* dmdName */,
+    174 /* dnQualifier */,
+    447 /* document */,
+    471 /* documentAuthor */,
+    468 /* documentIdentifier */,
+    472 /* documentLocation */,
+    502 /* documentPublisher */,
+    449 /* documentSeries */,
+    469 /* documentTitle */,
+    470 /* documentVersion */,
+    392 /* domain */,
+    452 /* domainRelatedObject */,
+    802 /* dsa_with_SHA224 */,
+    803 /* dsa_with_SHA256 */,
+    791 /* ecdsa-with-Recommended */,
+    416 /* ecdsa-with-SHA1 */,
+    793 /* ecdsa-with-SHA224 */,
+    794 /* ecdsa-with-SHA256 */,
+    795 /* ecdsa-with-SHA384 */,
+    796 /* ecdsa-with-SHA512 */,
+    792 /* ecdsa-with-Specified */,
+    48 /* emailAddress */,
+    132 /* emailProtection */,
+    885 /* enhancedSearchGuide */,
+    389 /* enterprises */,
+    384 /* experimental */,
+    172 /* extReq */,
+    56 /* extendedCertificateAttributes */,
+    126 /* extendedKeyUsage */,
+    372 /* extendedStatus */,
+    867 /* facsimileTelephoneNumber */,
+    462 /* favouriteDrink */,
+    857 /* freshestCRL */,
+    453 /* friendlyCountry */,
+    490 /* friendlyCountryName */,
+    156 /* friendlyName */,
+    509 /* generationQualifier */,
+    815 /* gost-mac */,
+    811 /* gost2001 */,
+    851 /* gost2001cc */,
+    813 /* gost89 */,
+    814 /* gost89-cnt */,
+    812 /* gost94 */,
+    850 /* gost94cc */,
+    797 /* hmacWithMD5 */,
+    163 /* hmacWithSHA1 */,
+    798 /* hmacWithSHA224 */,
+    799 /* hmacWithSHA256 */,
+    800 /* hmacWithSHA384 */,
+    801 /* hmacWithSHA512 */,
+    432 /* holdInstructionCallIssuer */,
+    430 /* holdInstructionCode */,
+    431 /* holdInstructionNone */,
+    433 /* holdInstructionReject */,
+    486 /* homePostalAddress */,
+    473 /* homeTelephoneNumber */,
+    466 /* host */,
+    889 /* houseIdentifier */,
+    442 /* iA5StringSyntax */,
+    783 /* id-DHBasedMac */,
+    824 /* id-Gost28147-89-CryptoPro-A-ParamSet */,
+    825 /* id-Gost28147-89-CryptoPro-B-ParamSet */,
+    826 /* id-Gost28147-89-CryptoPro-C-ParamSet */,
+    827 /* id-Gost28147-89-CryptoPro-D-ParamSet */,
+    819 /* id-Gost28147-89-CryptoPro-KeyMeshing */,
+    829 /* id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet */,
+    828 /* id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet */,
+    830 /* id-Gost28147-89-CryptoPro-RIC-1-ParamSet */,
+    820 /* id-Gost28147-89-None-KeyMeshing */,
+    823 /* id-Gost28147-89-TestParamSet */,
+    849 /* id-Gost28147-89-cc */,
+    840 /* id-GostR3410-2001-CryptoPro-A-ParamSet */,
+    841 /* id-GostR3410-2001-CryptoPro-B-ParamSet */,
+    842 /* id-GostR3410-2001-CryptoPro-C-ParamSet */,
+    843 /* id-GostR3410-2001-CryptoPro-XchA-ParamSet */,
+    844 /* id-GostR3410-2001-CryptoPro-XchB-ParamSet */,
+    854 /* id-GostR3410-2001-ParamSet-cc */,
+    839 /* id-GostR3410-2001-TestParamSet */,
+    817 /* id-GostR3410-2001DH */,
+    832 /* id-GostR3410-94-CryptoPro-A-ParamSet */,
+    833 /* id-GostR3410-94-CryptoPro-B-ParamSet */,
+    834 /* id-GostR3410-94-CryptoPro-C-ParamSet */,
+    835 /* id-GostR3410-94-CryptoPro-D-ParamSet */,
+    836 /* id-GostR3410-94-CryptoPro-XchA-ParamSet */,
+    837 /* id-GostR3410-94-CryptoPro-XchB-ParamSet */,
+    838 /* id-GostR3410-94-CryptoPro-XchC-ParamSet */,
+    831 /* id-GostR3410-94-TestParamSet */,
+    845 /* id-GostR3410-94-a */,
+    846 /* id-GostR3410-94-aBis */,
+    847 /* id-GostR3410-94-b */,
+    848 /* id-GostR3410-94-bBis */,
+    818 /* id-GostR3410-94DH */,
+    822 /* id-GostR3411-94-CryptoProParamSet */,
+    821 /* id-GostR3411-94-TestParamSet */,
+    807 /* id-GostR3411-94-with-GostR3410-2001 */,
+    853 /* id-GostR3411-94-with-GostR3410-2001-cc */,
+    808 /* id-GostR3411-94-with-GostR3410-94 */,
+    852 /* id-GostR3411-94-with-GostR3410-94-cc */,
+    810 /* id-HMACGostR3411-94 */,
+    782 /* id-PasswordBasedMAC */,
+    266 /* id-aca */,
+    355 /* id-aca-accessIdentity */,
+    354 /* id-aca-authenticationInfo */,
+    356 /* id-aca-chargingIdentity */,
+    399 /* id-aca-encAttrs */,
+    357 /* id-aca-group */,
+    358 /* id-aca-role */,
+    176 /* id-ad */,
+    896 /* id-aes128-CCM */,
+    895 /* id-aes128-GCM */,
+    788 /* id-aes128-wrap */,
+    897 /* id-aes128-wrap-pad */,
+    899 /* id-aes192-CCM */,
+    898 /* id-aes192-GCM */,
+    789 /* id-aes192-wrap */,
+    900 /* id-aes192-wrap-pad */,
+    902 /* id-aes256-CCM */,
+    901 /* id-aes256-GCM */,
+    790 /* id-aes256-wrap */,
+    903 /* id-aes256-wrap-pad */,
+    262 /* id-alg */,
+    893 /* id-alg-PWRI-KEK */,
+    323 /* id-alg-des40 */,
+    326 /* id-alg-dh-pop */,
+    325 /* id-alg-dh-sig-hmac-sha1 */,
+    324 /* id-alg-noSignature */,
+    907 /* id-camellia128-wrap */,
+    908 /* id-camellia192-wrap */,
+    909 /* id-camellia256-wrap */,
+    268 /* id-cct */,
+    361 /* id-cct-PKIData */,
+    362 /* id-cct-PKIResponse */,
+    360 /* id-cct-crs */,
+    81 /* id-ce */,
+    680 /* id-characteristic-two-basis */,
+    263 /* id-cmc */,
+    334 /* id-cmc-addExtensions */,
+    346 /* id-cmc-confirmCertAcceptance */,
+    330 /* id-cmc-dataReturn */,
+    336 /* id-cmc-decryptedPOP */,
+    335 /* id-cmc-encryptedPOP */,
+    339 /* id-cmc-getCRL */,
+    338 /* id-cmc-getCert */,
+    328 /* id-cmc-identification */,
+    329 /* id-cmc-identityProof */,
+    337 /* id-cmc-lraPOPWitness */,
+    344 /* id-cmc-popLinkRandom */,
+    345 /* id-cmc-popLinkWitness */,
+    343 /* id-cmc-queryPending */,
+    333 /* id-cmc-recipientNonce */,
+    341 /* id-cmc-regInfo */,
+    342 /* id-cmc-responseInfo */,
+    340 /* id-cmc-revokeRequest */,
+    332 /* id-cmc-senderNonce */,
+    327 /* id-cmc-statusInfo */,
+    331 /* id-cmc-transactionId */,
+    787 /* id-ct-asciiTextWithCRLF */,
+    408 /* id-ecPublicKey */,
+    508 /* id-hex-multipart-message */,
+    507 /* id-hex-partial-message */,
+    260 /* id-it */,
+    302 /* id-it-caKeyUpdateInfo */,
+    298 /* id-it-caProtEncCert */,
+    311 /* id-it-confirmWaitTime */,
+    303 /* id-it-currentCRL */,
+    300 /* id-it-encKeyPairTypes */,
+    310 /* id-it-implicitConfirm */,
+    308 /* id-it-keyPairParamRep */,
+    307 /* id-it-keyPairParamReq */,
+    312 /* id-it-origPKIMessage */,
+    301 /* id-it-preferredSymmAlg */,
+    309 /* id-it-revPassphrase */,
+    299 /* id-it-signKeyPairTypes */,
+    305 /* id-it-subscriptionRequest */,
+    306 /* id-it-subscriptionResponse */,
+    784 /* id-it-suppLangTags */,
+    304 /* id-it-unsupportedOIDs */,
+    128 /* id-kp */,
+    280 /* id-mod-attribute-cert */,
+    274 /* id-mod-cmc */,
+    277 /* id-mod-cmp */,
+    284 /* id-mod-cmp2000 */,
+    273 /* id-mod-crmf */,
+    283 /* id-mod-dvcs */,
+    275 /* id-mod-kea-profile-88 */,
+    276 /* id-mod-kea-profile-93 */,
+    282 /* id-mod-ocsp */,
+    278 /* id-mod-qualified-cert-88 */,
+    279 /* id-mod-qualified-cert-93 */,
+    281 /* id-mod-timestamp-protocol */,
+    264 /* id-on */,
+    858 /* id-on-permanentIdentifier */,
+    347 /* id-on-personalData */,
+    265 /* id-pda */,
+    352 /* id-pda-countryOfCitizenship */,
+    353 /* id-pda-countryOfResidence */,
+    348 /* id-pda-dateOfBirth */,
+    351 /* id-pda-gender */,
+    349 /* id-pda-placeOfBirth */,
+    175 /* id-pe */,
+    261 /* id-pkip */,
+    258 /* id-pkix-mod */,
+    269 /* id-pkix1-explicit-88 */,
+    271 /* id-pkix1-explicit-93 */,
+    270 /* id-pkix1-implicit-88 */,
+    272 /* id-pkix1-implicit-93 */,
+    662 /* id-ppl */,
+    664 /* id-ppl-anyLanguage */,
+    667 /* id-ppl-independent */,
+    665 /* id-ppl-inheritAll */,
+    267 /* id-qcs */,
+    359 /* id-qcs-pkixQCSyntax-v1 */,
+    259 /* id-qt */,
+    164 /* id-qt-cps */,
+    165 /* id-qt-unotice */,
+    313 /* id-regCtrl */,
+    316 /* id-regCtrl-authenticator */,
+    319 /* id-regCtrl-oldCertID */,
+    318 /* id-regCtrl-pkiArchiveOptions */,
+    317 /* id-regCtrl-pkiPublicationInfo */,
+    320 /* id-regCtrl-protocolEncrKey */,
+    315 /* id-regCtrl-regToken */,
+    314 /* id-regInfo */,
+    322 /* id-regInfo-certReq */,
+    321 /* id-regInfo-utf8Pairs */,
+    512 /* id-set */,
+    191 /* id-smime-aa */,
+    215 /* id-smime-aa-contentHint */,
+    218 /* id-smime-aa-contentIdentifier */,
+    221 /* id-smime-aa-contentReference */,
+    240 /* id-smime-aa-dvcs-dvc */,
+    217 /* id-smime-aa-encapContentType */,
+    222 /* id-smime-aa-encrypKeyPref */,
+    220 /* id-smime-aa-equivalentLabels */,
+    232 /* id-smime-aa-ets-CertificateRefs */,
+    233 /* id-smime-aa-ets-RevocationRefs */,
+    238 /* id-smime-aa-ets-archiveTimeStamp */,
+    237 /* id-smime-aa-ets-certCRLTimestamp */,
+    234 /* id-smime-aa-ets-certValues */,
+    227 /* id-smime-aa-ets-commitmentType */,
+    231 /* id-smime-aa-ets-contentTimestamp */,
+    236 /* id-smime-aa-ets-escTimeStamp */,
+    230 /* id-smime-aa-ets-otherSigCert */,
+    235 /* id-smime-aa-ets-revocationValues */,
+    226 /* id-smime-aa-ets-sigPolicyId */,
+    229 /* id-smime-aa-ets-signerAttr */,
+    228 /* id-smime-aa-ets-signerLocation */,
+    219 /* id-smime-aa-macValue */,
+    214 /* id-smime-aa-mlExpandHistory */,
+    216 /* id-smime-aa-msgSigDigest */,
+    212 /* id-smime-aa-receiptRequest */,
+    213 /* id-smime-aa-securityLabel */,
+    239 /* id-smime-aa-signatureType */,
+    223 /* id-smime-aa-signingCertificate */,
+    224 /* id-smime-aa-smimeEncryptCerts */,
+    225 /* id-smime-aa-timeStampToken */,
+    192 /* id-smime-alg */,
+    243 /* id-smime-alg-3DESwrap */,
+    246 /* id-smime-alg-CMS3DESwrap */,
+    247 /* id-smime-alg-CMSRC2wrap */,
+    245 /* id-smime-alg-ESDH */,
+    241 /* id-smime-alg-ESDHwith3DES */,
+    242 /* id-smime-alg-ESDHwithRC2 */,
+    244 /* id-smime-alg-RC2wrap */,
+    193 /* id-smime-cd */,
+    248 /* id-smime-cd-ldap */,
+    190 /* id-smime-ct */,
+    210 /* id-smime-ct-DVCSRequestData */,
+    211 /* id-smime-ct-DVCSResponseData */,
+    208 /* id-smime-ct-TDTInfo */,
+    207 /* id-smime-ct-TSTInfo */,
+    205 /* id-smime-ct-authData */,
+    786 /* id-smime-ct-compressedData */,
+    209 /* id-smime-ct-contentInfo */,
+    206 /* id-smime-ct-publishCert */,
+    204 /* id-smime-ct-receipt */,
+    195 /* id-smime-cti */,
+    255 /* id-smime-cti-ets-proofOfApproval */,
+    256 /* id-smime-cti-ets-proofOfCreation */,
+    253 /* id-smime-cti-ets-proofOfDelivery */,
+    251 /* id-smime-cti-ets-proofOfOrigin */,
+    252 /* id-smime-cti-ets-proofOfReceipt */,
+    254 /* id-smime-cti-ets-proofOfSender */,
+    189 /* id-smime-mod */,
+    196 /* id-smime-mod-cms */,
+    197 /* id-smime-mod-ess */,
+    202 /* id-smime-mod-ets-eSigPolicy-88 */,
+    203 /* id-smime-mod-ets-eSigPolicy-97 */,
+    200 /* id-smime-mod-ets-eSignature-88 */,
+    201 /* id-smime-mod-ets-eSignature-97 */,
+    199 /* id-smime-mod-msg-v3 */,
+    198 /* id-smime-mod-oid */,
+    194 /* id-smime-spq */,
+    250 /* id-smime-spq-ets-sqt-unotice */,
+    249 /* id-smime-spq-ets-sqt-uri */,
+    676 /* identified-organization */,
+    461 /* info */,
+    748 /* inhibitAnyPolicy */,
+    101 /* initials */,
+    647 /* international-organizations */,
+    869 /* internationaliSDNNumber */,
+    142 /* invalidityDate */,
+    294 /* ipsecEndSystem */,
+    295 /* ipsecTunnel */,
+    296 /* ipsecUser */,
+    86 /* issuerAltName */,
+    770 /* issuingDistributionPoint */,
+    492 /* janetMailbox */,
+    150 /* keyBag */,
+    83 /* keyUsage */,
+    477 /* lastModifiedBy */,
+    476 /* lastModifiedTime */,
+    157 /* localKeyID */,
+    480 /* mXRecord */,
+    460 /* mail */,
+    493 /* mailPreferenceOption */,
+    467 /* manager */,
+    809 /* md_gost94 */,
+    875 /* member */,
+    182 /* member-body */,
+    51 /* messageDigest */,
+    383 /* mgmt */,
+    504 /* mime-mhs */,
+    506 /* mime-mhs-bodies */,
+    505 /* mime-mhs-headings */,
+    488 /* mobileTelephoneNumber */,
+    136 /* msCTLSign */,
+    135 /* msCodeCom */,
+    134 /* msCodeInd */,
+    138 /* msEFS */,
+    171 /* msExtReq */,
+    137 /* msSGC */,
+    648 /* msSmartcardLogin */,
+    649 /* msUPN */,
+    481 /* nSRecord */,
+    173 /* name */,
+    666 /* nameConstraints */,
+    369 /* noCheck */,
+    403 /* noRevAvail */,
+    72 /* nsBaseUrl */,
+    76 /* nsCaPolicyUrl */,
+    74 /* nsCaRevocationUrl */,
+    58 /* nsCertExt */,
+    79 /* nsCertSequence */,
+    71 /* nsCertType */,
+    78 /* nsComment */,
+    59 /* nsDataType */,
+    75 /* nsRenewalUrl */,
+    73 /* nsRevocationUrl */,
+    139 /* nsSGC */,
+    77 /* nsSslServerName */,
+    681 /* onBasis */,
+    491 /* organizationalStatus */,
+    475 /* otherMailbox */,
+    876 /* owner */,
+    489 /* pagerTelephoneNumber */,
+    374 /* path */,
+    112 /* pbeWithMD5AndCast5CBC */,
+    499 /* personalSignature */,
+    487 /* personalTitle */,
+    464 /* photo */,
+    863 /* physicalDeliveryOfficeName */,
+    437 /* pilot */,
+    439 /* pilotAttributeSyntax */,
+    438 /* pilotAttributeType */,
+    479 /* pilotAttributeType27 */,
+    456 /* pilotDSA */,
+    441 /* pilotGroups */,
+    444 /* pilotObject */,
+    440 /* pilotObjectClass */,
+    455 /* pilotOrganization */,
+    445 /* pilotPerson */,
+    2 /* pkcs */,
+    186 /* pkcs1 */,
+    27 /* pkcs3 */,
+    187 /* pkcs5 */,
+    20 /* pkcs7 */,
+    21 /* pkcs7-data */,
+    25 /* pkcs7-digestData */,
+    26 /* pkcs7-encryptedData */,
+    23 /* pkcs7-envelopedData */,
+    24 /* pkcs7-signedAndEnvelopedData */,
+    22 /* pkcs7-signedData */,
+    151 /* pkcs8ShroudedKeyBag */,
+    47 /* pkcs9 */,
+    401 /* policyConstraints */,
+    747 /* policyMappings */,
+    862 /* postOfficeBox */,
+    861 /* postalAddress */,
+    661 /* postalCode */,
+    683 /* ppBasis */,
+    872 /* preferredDeliveryMethod */,
+    873 /* presentationAddress */,
+    816 /* prf-gostr3411-94 */,
+    406 /* prime-field */,
+    409 /* prime192v1 */,
+    410 /* prime192v2 */,
+    411 /* prime192v3 */,
+    412 /* prime239v1 */,
+    413 /* prime239v2 */,
+    414 /* prime239v3 */,
+    415 /* prime256v1 */,
+    385 /* private */,
+    84 /* privateKeyUsagePeriod */,
+    886 /* protocolInformation */,
+    663 /* proxyCertInfo */,
+    510 /* pseudonym */,
+    435 /* pss */,
+    286 /* qcStatements */,
+    457 /* qualityLabelledData */,
+    450 /* rFC822localPart */,
+    870 /* registeredAddress */,
+    400 /* role */,
+    877 /* roleOccupant */,
+    448 /* room */,
+    463 /* roomNumber */,
+    6 /* rsaEncryption */,
+    644 /* rsaOAEPEncryptionSET */,
+    377 /* rsaSignature */,
+    1 /* rsadsi */,
+    482 /* sOARecord */,
+    155 /* safeContentsBag */,
+    291 /* sbgp-autonomousSysNum */,
+    290 /* sbgp-ipAddrBlock */,
+    292 /* sbgp-routerIdentifier */,
+    159 /* sdsiCertificate */,
+    859 /* searchGuide */,
+    704 /* secp112r1 */,
+    705 /* secp112r2 */,
+    706 /* secp128r1 */,
+    707 /* secp128r2 */,
+    708 /* secp160k1 */,
+    709 /* secp160r1 */,
+    710 /* secp160r2 */,
+    711 /* secp192k1 */,
+    712 /* secp224k1 */,
+    713 /* secp224r1 */,
+    714 /* secp256k1 */,
+    715 /* secp384r1 */,
+    716 /* secp521r1 */,
+    154 /* secretBag */,
+    474 /* secretary */,
+    717 /* sect113r1 */,
+    718 /* sect113r2 */,
+    719 /* sect131r1 */,
+    720 /* sect131r2 */,
+    721 /* sect163k1 */,
+    722 /* sect163r1 */,
+    723 /* sect163r2 */,
+    724 /* sect193r1 */,
+    725 /* sect193r2 */,
+    726 /* sect233k1 */,
+    727 /* sect233r1 */,
+    728 /* sect239k1 */,
+    729 /* sect283k1 */,
+    730 /* sect283r1 */,
+    731 /* sect409k1 */,
+    732 /* sect409r1 */,
+    733 /* sect571k1 */,
+    734 /* sect571r1 */,
+    386 /* security */,
+    878 /* seeAlso */,
+    394 /* selected-attribute-types */,
+    105 /* serialNumber */,
+    129 /* serverAuth */,
+    371 /* serviceLocator */,
+    625 /* set-addPolicy */,
+    515 /* set-attr */,
+    518 /* set-brand */,
+    638 /* set-brand-AmericanExpress */,
+    637 /* set-brand-Diners */,
+    636 /* set-brand-IATA-ATA */,
+    639 /* set-brand-JCB */,
+    641 /* set-brand-MasterCard */,
+    642 /* set-brand-Novus */,
+    640 /* set-brand-Visa */,
+    517 /* set-certExt */,
+    513 /* set-ctype */,
+    514 /* set-msgExt */,
+    516 /* set-policy */,
+    607 /* set-policy-root */,
+    624 /* set-rootKeyThumb */,
+    620 /* setAttr-Cert */,
+    631 /* setAttr-GenCryptgrm */,
+    623 /* setAttr-IssCap */,
+    628 /* setAttr-IssCap-CVM */,
+    630 /* setAttr-IssCap-Sig */,
+    629 /* setAttr-IssCap-T2 */,
+    621 /* setAttr-PGWYcap */,
+    635 /* setAttr-SecDevSig */,
+    632 /* setAttr-T2Enc */,
+    633 /* setAttr-T2cleartxt */,
+    634 /* setAttr-TokICCsig */,
+    627 /* setAttr-Token-B0Prime */,
+    626 /* setAttr-Token-EMV */,
+    622 /* setAttr-TokenType */,
+    619 /* setCext-IssuerCapabilities */,
+    615 /* setCext-PGWYcapabilities */,
+    616 /* setCext-TokenIdentifier */,
+    618 /* setCext-TokenType */,
+    617 /* setCext-Track2Data */,
+    611 /* setCext-cCertRequired */,
+    609 /* setCext-certType */,
+    608 /* setCext-hashedRoot */,
+    610 /* setCext-merchData */,
+    613 /* setCext-setExt */,
+    614 /* setCext-setQualf */,
+    612 /* setCext-tunneling */,
+    540 /* setct-AcqCardCodeMsg */,
+    576 /* setct-AcqCardCodeMsgTBE */,
+    570 /* setct-AuthReqTBE */,
+    534 /* setct-AuthReqTBS */,
+    527 /* setct-AuthResBaggage */,
+    571 /* setct-AuthResTBE */,
+    572 /* setct-AuthResTBEX */,
+    535 /* setct-AuthResTBS */,
+    536 /* setct-AuthResTBSX */,
+    528 /* setct-AuthRevReqBaggage */,
+    577 /* setct-AuthRevReqTBE */,
+    541 /* setct-AuthRevReqTBS */,
+    529 /* setct-AuthRevResBaggage */,
+    542 /* setct-AuthRevResData */,
+    578 /* setct-AuthRevResTBE */,
+    579 /* setct-AuthRevResTBEB */,
+    543 /* setct-AuthRevResTBS */,
+    573 /* setct-AuthTokenTBE */,
+    537 /* setct-AuthTokenTBS */,
+    600 /* setct-BCIDistributionTBS */,
+    558 /* setct-BatchAdminReqData */,
+    592 /* setct-BatchAdminReqTBE */,
+    559 /* setct-BatchAdminResData */,
+    593 /* setct-BatchAdminResTBE */,
+    599 /* setct-CRLNotificationResTBS */,
+    598 /* setct-CRLNotificationTBS */,
+    580 /* setct-CapReqTBE */,
+    581 /* setct-CapReqTBEX */,
+    544 /* setct-CapReqTBS */,
+    545 /* setct-CapReqTBSX */,
+    546 /* setct-CapResData */,
+    582 /* setct-CapResTBE */,
+    583 /* setct-CapRevReqTBE */,
+    584 /* setct-CapRevReqTBEX */,
+    547 /* setct-CapRevReqTBS */,
+    548 /* setct-CapRevReqTBSX */,
+    549 /* setct-CapRevResData */,
+    585 /* setct-CapRevResTBE */,
+    538 /* setct-CapTokenData */,
+    530 /* setct-CapTokenSeq */,
+    574 /* setct-CapTokenTBE */,
+    575 /* setct-CapTokenTBEX */,
+    539 /* setct-CapTokenTBS */,
+    560 /* setct-CardCInitResTBS */,
+    566 /* setct-CertInqReqTBS */,
+    563 /* setct-CertReqData */,
+    595 /* setct-CertReqTBE */,
+    596 /* setct-CertReqTBEX */,
+    564 /* setct-CertReqTBS */,
+    565 /* setct-CertResData */,
+    597 /* setct-CertResTBE */,
+    586 /* setct-CredReqTBE */,
+    587 /* setct-CredReqTBEX */,
+    550 /* setct-CredReqTBS */,
+    551 /* setct-CredReqTBSX */,
+    552 /* setct-CredResData */,
+    588 /* setct-CredResTBE */,
+    589 /* setct-CredRevReqTBE */,
+    590 /* setct-CredRevReqTBEX */,
+    553 /* setct-CredRevReqTBS */,
+    554 /* setct-CredRevReqTBSX */,
+    555 /* setct-CredRevResData */,
+    591 /* setct-CredRevResTBE */,
+    567 /* setct-ErrorTBS */,
+    526 /* setct-HODInput */,
+    561 /* setct-MeAqCInitResTBS */,
+    522 /* setct-OIData */,
+    519 /* setct-PANData */,
+    521 /* setct-PANOnly */,
+    520 /* setct-PANToken */,
+    556 /* setct-PCertReqData */,
+    557 /* setct-PCertResTBS */,
+    523 /* setct-PI */,
+    532 /* setct-PI-TBS */,
+    524 /* setct-PIData */,
+    525 /* setct-PIDataUnsigned */,
+    568 /* setct-PIDualSignedTBE */,
+    569 /* setct-PIUnsignedTBE */,
+    531 /* setct-PInitResData */,
+    533 /* setct-PResData */,
+    594 /* setct-RegFormReqTBE */,
+    562 /* setct-RegFormResTBS */,
+    606 /* setext-cv */,
+    601 /* setext-genCrypt */,
+    602 /* setext-miAuth */,
+    604 /* setext-pinAny */,
+    603 /* setext-pinSecure */,
+    605 /* setext-track2 */,
+    52 /* signingTime */,
+    454 /* simpleSecurityObject */,
+    496 /* singleLevelQuality */,
+    387 /* snmpv2 */,
+    660 /* street */,
+    85 /* subjectAltName */,
+    769 /* subjectDirectoryAttributes */,
+    398 /* subjectInfoAccess */,
+    82 /* subjectKeyIdentifier */,
+    498 /* subtreeMaximumQuality */,
+    497 /* subtreeMinimumQuality */,
+    890 /* supportedAlgorithms */,
+    874 /* supportedApplicationContext */,
+    402 /* targetInformation */,
+    864 /* telephoneNumber */,
+    866 /* teletexTerminalIdentifier */,
+    865 /* telexNumber */,
+    459 /* textEncodedORAddress */,
+    293 /* textNotice */,
+    133 /* timeStamping */,
+    106 /* title */,
+    682 /* tpBasis */,
+    375 /* trustRoot */,
+    436 /* ucl */,
+    888 /* uniqueMember */,
+    55 /* unstructuredAddress */,
+    49 /* unstructuredName */,
+    880 /* userCertificate */,
+    465 /* userClass */,
+    879 /* userPassword */,
+    373 /* valid */,
+    678 /* wap */,
+    679 /* wap-wsg */,
+    735 /* wap-wsg-idm-ecid-wtls1 */,
+    743 /* wap-wsg-idm-ecid-wtls10 */,
+    744 /* wap-wsg-idm-ecid-wtls11 */,
+    745 /* wap-wsg-idm-ecid-wtls12 */,
+    736 /* wap-wsg-idm-ecid-wtls3 */,
+    737 /* wap-wsg-idm-ecid-wtls4 */,
+    738 /* wap-wsg-idm-ecid-wtls5 */,
+    739 /* wap-wsg-idm-ecid-wtls6 */,
+    740 /* wap-wsg-idm-ecid-wtls7 */,
+    741 /* wap-wsg-idm-ecid-wtls8 */,
+    742 /* wap-wsg-idm-ecid-wtls9 */,
+    804 /* whirlpool */,
+    868 /* x121Address */,
+    503 /* x500UniqueIdentifier */,
+    158 /* x509Certificate */,
+    160 /* x509Crl */,
+};
+
+static const uint16_t kNIDsInLongNameOrder[] = {
+    363 /* AD Time Stamping */,
+    405 /* ANSI X9.62 */,
+    368 /* Acceptable OCSP Responses */,
+    910 /* Any Extended Key Usage */,
+    664 /* Any language */,
+    177 /* Authority Information Access */,
+    365 /* Basic OCSP Response */,
+    285 /* Biometric Info */,
+    179 /* CA Issuers */,
+    785 /* CA Repository */,
+    959 /* CECPQ2 */,
+    131 /* Code Signing */,
+    783 /* Diffie-Hellman based MAC */,
+    382 /* Directory */,
+    392 /* Domain */,
+    132 /* E-mail Protection */,
+    949 /* ED25519 */,
+    960 /* ED448 */,
+    389 /* Enterprises */,
+    384 /* Experimental */,
+    372 /* Extended OCSP Status */,
+    172 /* Extension Request */,
+    813 /* GOST 28147-89 */,
+    849 /* GOST 28147-89 Cryptocom ParamSet */,
+    815 /* GOST 28147-89 MAC */,
+    851 /* GOST 34.10-2001 Cryptocom */,
+    850 /* GOST 34.10-94 Cryptocom */,
+    811 /* GOST R 34.10-2001 */,
+    817 /* GOST R 34.10-2001 DH */,
+    812 /* GOST R 34.10-94 */,
+    818 /* GOST R 34.10-94 DH */,
+    809 /* GOST R 34.11-94 */,
+    816 /* GOST R 34.11-94 PRF */,
+    807 /* GOST R 34.11-94 with GOST R 34.10-2001 */,
+    853 /* GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom */,
+    808 /* GOST R 34.11-94 with GOST R 34.10-94 */,
+    852 /* GOST R 34.11-94 with GOST R 34.10-94 Cryptocom */,
+    854 /* GOST R 3410-2001 Parameter Set Cryptocom */,
+    810 /* HMAC GOST 34.11-94 */,
+    432 /* Hold Instruction Call Issuer */,
+    430 /* Hold Instruction Code */,
+    431 /* Hold Instruction None */,
+    433 /* Hold Instruction Reject */,
+    634 /* ICC or token signature */,
+    294 /* IPSec End System */,
+    295 /* IPSec Tunnel */,
+    296 /* IPSec User */,
+    182 /* ISO Member Body */,
+    183 /* ISO US Member Body */,
+    667 /* Independent */,
+    665 /* Inherit all */,
+    647 /* International Organizations */,
+    142 /* Invalidity Date */,
+    504 /* MIME MHS */,
+    388 /* Mail */,
+    383 /* Management */,
+    417 /* Microsoft CSP Name */,
+    135 /* Microsoft Commercial Code Signing */,
+    138 /* Microsoft Encrypted File System */,
+    171 /* Microsoft Extension Request */,
+    134 /* Microsoft Individual Code Signing */,
+    856 /* Microsoft Local Key set */,
+    137 /* Microsoft Server Gated Crypto */,
+    648 /* Microsoft Smartcardlogin */,
+    136 /* Microsoft Trust List Signing */,
+    649 /* Microsoft Universal Principal Name */,
+    72 /* Netscape Base Url */,
+    76 /* Netscape CA Policy Url */,
+    74 /* Netscape CA Revocation Url */,
+    71 /* Netscape Cert Type */,
+    58 /* Netscape Certificate Extension */,
+    79 /* Netscape Certificate Sequence */,
+    78 /* Netscape Comment */,
+    57 /* Netscape Communications Corp. */,
+    59 /* Netscape Data Type */,
+    75 /* Netscape Renewal Url */,
+    73 /* Netscape Revocation Url */,
+    77 /* Netscape SSL Server Name */,
+    139 /* Netscape Server Gated Crypto */,
+    178 /* OCSP */,
+    370 /* OCSP Archive Cutoff */,
+    367 /* OCSP CRL ID */,
+    369 /* OCSP No Check */,
+    366 /* OCSP Nonce */,
+    371 /* OCSP Service Locator */,
+    180 /* OCSP Signing */,
+    161 /* PBES2 */,
+    69 /* PBKDF2 */,
+    162 /* PBMAC1 */,
+    127 /* PKIX */,
+    858 /* Permanent Identifier */,
+    164 /* Policy Qualifier CPS */,
+    165 /* Policy Qualifier User Notice */,
+    385 /* Private */,
+    663 /* Proxy Certificate Information */,
+    1 /* RSA Data Security, Inc. */,
+    2 /* RSA Data Security, Inc. PKCS */,
+    188 /* S/MIME */,
+    167 /* S/MIME Capabilities */,
+    387 /* SNMPv2 */,
+    512 /* Secure Electronic Transactions */,
+    386 /* Security */,
+    394 /* Selected Attribute Types */,
+    143 /* Strong Extranet ID */,
+    398 /* Subject Information Access */,
+    130 /* TLS Web Client Authentication */,
+    129 /* TLS Web Server Authentication */,
+    133 /* Time Stamping */,
+    375 /* Trust Root */,
+    948 /* X25519 */,
+    961 /* X448 */,
+    12 /* X509 */,
+    402 /* X509v3 AC Targeting */,
+    746 /* X509v3 Any Policy */,
+    90 /* X509v3 Authority Key Identifier */,
+    87 /* X509v3 Basic Constraints */,
+    103 /* X509v3 CRL Distribution Points */,
+    88 /* X509v3 CRL Number */,
+    141 /* X509v3 CRL Reason Code */,
+    771 /* X509v3 Certificate Issuer */,
+    89 /* X509v3 Certificate Policies */,
+    140 /* X509v3 Delta CRL Indicator */,
+    126 /* X509v3 Extended Key Usage */,
+    857 /* X509v3 Freshest CRL */,
+    748 /* X509v3 Inhibit Any Policy */,
+    86 /* X509v3 Issuer Alternative Name */,
+    770 /* X509v3 Issuing Distribution Point */,
+    83 /* X509v3 Key Usage */,
+    666 /* X509v3 Name Constraints */,
+    403 /* X509v3 No Revocation Available */,
+    401 /* X509v3 Policy Constraints */,
+    747 /* X509v3 Policy Mappings */,
+    84 /* X509v3 Private Key Usage Period */,
+    85 /* X509v3 Subject Alternative Name */,
+    769 /* X509v3 Subject Directory Attributes */,
+    82 /* X509v3 Subject Key Identifier */,
+    920 /* X9.42 DH */,
+    184 /* X9.57 */,
+    185 /* X9.57 CM ? */,
+    478 /* aRecord */,
+    289 /* aaControls */,
+    287 /* ac-auditEntity */,
+    397 /* ac-proxying */,
+    288 /* ac-targeting */,
+    446 /* account */,
+    364 /* ad dvcs */,
+    606 /* additional verification */,
+    419 /* aes-128-cbc */,
+    916 /* aes-128-cbc-hmac-sha1 */,
+    896 /* aes-128-ccm */,
+    421 /* aes-128-cfb */,
+    650 /* aes-128-cfb1 */,
+    653 /* aes-128-cfb8 */,
+    904 /* aes-128-ctr */,
+    418 /* aes-128-ecb */,
+    895 /* aes-128-gcm */,
+    420 /* aes-128-ofb */,
+    913 /* aes-128-xts */,
+    423 /* aes-192-cbc */,
+    917 /* aes-192-cbc-hmac-sha1 */,
+    899 /* aes-192-ccm */,
+    425 /* aes-192-cfb */,
+    651 /* aes-192-cfb1 */,
+    654 /* aes-192-cfb8 */,
+    905 /* aes-192-ctr */,
+    422 /* aes-192-ecb */,
+    898 /* aes-192-gcm */,
+    424 /* aes-192-ofb */,
+    427 /* aes-256-cbc */,
+    918 /* aes-256-cbc-hmac-sha1 */,
+    902 /* aes-256-ccm */,
+    429 /* aes-256-cfb */,
+    652 /* aes-256-cfb1 */,
+    655 /* aes-256-cfb8 */,
+    906 /* aes-256-ctr */,
+    426 /* aes-256-ecb */,
+    901 /* aes-256-gcm */,
+    428 /* aes-256-ofb */,
+    914 /* aes-256-xts */,
+    376 /* algorithm */,
+    484 /* associatedDomain */,
+    485 /* associatedName */,
+    501 /* audio */,
+    958 /* auth-any */,
+    955 /* auth-ecdsa */,
+    956 /* auth-psk */,
+    954 /* auth-rsa */,
+    882 /* authorityRevocationList */,
+    91 /* bf-cbc */,
+    93 /* bf-cfb */,
+    92 /* bf-ecb */,
+    94 /* bf-ofb */,
+    921 /* brainpoolP160r1 */,
+    922 /* brainpoolP160t1 */,
+    923 /* brainpoolP192r1 */,
+    924 /* brainpoolP192t1 */,
+    925 /* brainpoolP224r1 */,
+    926 /* brainpoolP224t1 */,
+    927 /* brainpoolP256r1 */,
+    928 /* brainpoolP256t1 */,
+    929 /* brainpoolP320r1 */,
+    930 /* brainpoolP320t1 */,
+    931 /* brainpoolP384r1 */,
+    932 /* brainpoolP384t1 */,
+    933 /* brainpoolP512r1 */,
+    934 /* brainpoolP512t1 */,
+    494 /* buildingName */,
+    860 /* businessCategory */,
+    691 /* c2onb191v4 */,
+    692 /* c2onb191v5 */,
+    697 /* c2onb239v4 */,
+    698 /* c2onb239v5 */,
+    684 /* c2pnb163v1 */,
+    685 /* c2pnb163v2 */,
+    686 /* c2pnb163v3 */,
+    687 /* c2pnb176v1 */,
+    693 /* c2pnb208w1 */,
+    699 /* c2pnb272w1 */,
+    700 /* c2pnb304w1 */,
+    702 /* c2pnb368w1 */,
+    688 /* c2tnb191v1 */,
+    689 /* c2tnb191v2 */,
+    690 /* c2tnb191v3 */,
+    694 /* c2tnb239v1 */,
+    695 /* c2tnb239v2 */,
+    696 /* c2tnb239v3 */,
+    701 /* c2tnb359v1 */,
+    703 /* c2tnb431r1 */,
+    881 /* cACertificate */,
+    483 /* cNAMERecord */,
+    751 /* camellia-128-cbc */,
+    757 /* camellia-128-cfb */,
+    760 /* camellia-128-cfb1 */,
+    763 /* camellia-128-cfb8 */,
+    754 /* camellia-128-ecb */,
+    766 /* camellia-128-ofb */,
+    752 /* camellia-192-cbc */,
+    758 /* camellia-192-cfb */,
+    761 /* camellia-192-cfb1 */,
+    764 /* camellia-192-cfb8 */,
+    755 /* camellia-192-ecb */,
+    767 /* camellia-192-ofb */,
+    753 /* camellia-256-cbc */,
+    759 /* camellia-256-cfb */,
+    762 /* camellia-256-cfb1 */,
+    765 /* camellia-256-cfb8 */,
+    756 /* camellia-256-ecb */,
+    768 /* camellia-256-ofb */,
+    443 /* caseIgnoreIA5StringSyntax */,
+    108 /* cast5-cbc */,
+    110 /* cast5-cfb */,
+    109 /* cast5-ecb */,
+    111 /* cast5-ofb */,
+    152 /* certBag */,
+    677 /* certicom-arc */,
+    517 /* certificate extensions */,
+    883 /* certificateRevocationList */,
+    950 /* chacha20-poly1305 */,
+    54 /* challengePassword */,
+    407 /* characteristic-two-field */,
+    395 /* clearance */,
+    633 /* cleartext track 2 */,
+    894 /* cmac */,
+    13 /* commonName */,
+    513 /* content types */,
+    50 /* contentType */,
+    53 /* countersignature */,
+    14 /* countryName */,
+    153 /* crlBag */,
+    884 /* crossCertificatePair */,
+    806 /* cryptocom */,
+    805 /* cryptopro */,
+    500 /* dITRedirect */,
+    451 /* dNSDomain */,
+    495 /* dSAQuality */,
+    434 /* data */,
+    390 /* dcObject */,
+    891 /* deltaRevocationList */,
+    31 /* des-cbc */,
+    643 /* des-cdmf */,
+    30 /* des-cfb */,
+    656 /* des-cfb1 */,
+    657 /* des-cfb8 */,
+    29 /* des-ecb */,
+    32 /* des-ede */,
+    43 /* des-ede-cbc */,
+    60 /* des-ede-cfb */,
+    62 /* des-ede-ofb */,
+    33 /* des-ede3 */,
+    44 /* des-ede3-cbc */,
+    61 /* des-ede3-cfb */,
+    658 /* des-ede3-cfb1 */,
+    659 /* des-ede3-cfb8 */,
+    63 /* des-ede3-ofb */,
+    45 /* des-ofb */,
+    107 /* description */,
+    871 /* destinationIndicator */,
+    80 /* desx-cbc */,
+    947 /* dh-cofactor-kdf */,
+    946 /* dh-std-kdf */,
+    28 /* dhKeyAgreement */,
+    941 /* dhSinglePass-cofactorDH-sha1kdf-scheme */,
+    942 /* dhSinglePass-cofactorDH-sha224kdf-scheme */,
+    943 /* dhSinglePass-cofactorDH-sha256kdf-scheme */,
+    944 /* dhSinglePass-cofactorDH-sha384kdf-scheme */,
+    945 /* dhSinglePass-cofactorDH-sha512kdf-scheme */,
+    936 /* dhSinglePass-stdDH-sha1kdf-scheme */,
+    937 /* dhSinglePass-stdDH-sha224kdf-scheme */,
+    938 /* dhSinglePass-stdDH-sha256kdf-scheme */,
+    939 /* dhSinglePass-stdDH-sha384kdf-scheme */,
+    940 /* dhSinglePass-stdDH-sha512kdf-scheme */,
+    11 /* directory services (X.500) */,
+    378 /* directory services - algorithms */,
+    887 /* distinguishedName */,
+    892 /* dmdName */,
+    174 /* dnQualifier */,
+    447 /* document */,
+    471 /* documentAuthor */,
+    468 /* documentIdentifier */,
+    472 /* documentLocation */,
+    502 /* documentPublisher */,
+    449 /* documentSeries */,
+    469 /* documentTitle */,
+    470 /* documentVersion */,
+    380 /* dod */,
+    391 /* domainComponent */,
+    452 /* domainRelatedObject */,
+    116 /* dsaEncryption */,
+    67 /* dsaEncryption-old */,
+    66 /* dsaWithSHA */,
+    113 /* dsaWithSHA1 */,
+    70 /* dsaWithSHA1-old */,
+    802 /* dsa_with_SHA224 */,
+    803 /* dsa_with_SHA256 */,
+    297 /* dvcs */,
+    791 /* ecdsa-with-Recommended */,
+    416 /* ecdsa-with-SHA1 */,
+    793 /* ecdsa-with-SHA224 */,
+    794 /* ecdsa-with-SHA256 */,
+    795 /* ecdsa-with-SHA384 */,
+    796 /* ecdsa-with-SHA512 */,
+    792 /* ecdsa-with-Specified */,
+    48 /* emailAddress */,
+    632 /* encrypted track 2 */,
+    885 /* enhancedSearchGuide */,
+    56 /* extendedCertificateAttributes */,
+    867 /* facsimileTelephoneNumber */,
+    462 /* favouriteDrink */,
+    453 /* friendlyCountry */,
+    490 /* friendlyCountryName */,
+    156 /* friendlyName */,
+    631 /* generate cryptogram */,
+    509 /* generationQualifier */,
+    601 /* generic cryptogram */,
+    99 /* givenName */,
+    814 /* gost89-cnt */,
+    855 /* hmac */,
+    780 /* hmac-md5 */,
+    781 /* hmac-sha1 */,
+    797 /* hmacWithMD5 */,
+    163 /* hmacWithSHA1 */,
+    798 /* hmacWithSHA224 */,
+    799 /* hmacWithSHA256 */,
+    800 /* hmacWithSHA384 */,
+    801 /* hmacWithSHA512 */,
+    486 /* homePostalAddress */,
+    473 /* homeTelephoneNumber */,
+    466 /* host */,
+    889 /* houseIdentifier */,
+    442 /* iA5StringSyntax */,
+    381 /* iana */,
+    824 /* id-Gost28147-89-CryptoPro-A-ParamSet */,
+    825 /* id-Gost28147-89-CryptoPro-B-ParamSet */,
+    826 /* id-Gost28147-89-CryptoPro-C-ParamSet */,
+    827 /* id-Gost28147-89-CryptoPro-D-ParamSet */,
+    819 /* id-Gost28147-89-CryptoPro-KeyMeshing */,
+    829 /* id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet */,
+    828 /* id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet */,
+    830 /* id-Gost28147-89-CryptoPro-RIC-1-ParamSet */,
+    820 /* id-Gost28147-89-None-KeyMeshing */,
+    823 /* id-Gost28147-89-TestParamSet */,
+    840 /* id-GostR3410-2001-CryptoPro-A-ParamSet */,
+    841 /* id-GostR3410-2001-CryptoPro-B-ParamSet */,
+    842 /* id-GostR3410-2001-CryptoPro-C-ParamSet */,
+    843 /* id-GostR3410-2001-CryptoPro-XchA-ParamSet */,
+    844 /* id-GostR3410-2001-CryptoPro-XchB-ParamSet */,
+    839 /* id-GostR3410-2001-TestParamSet */,
+    832 /* id-GostR3410-94-CryptoPro-A-ParamSet */,
+    833 /* id-GostR3410-94-CryptoPro-B-ParamSet */,
+    834 /* id-GostR3410-94-CryptoPro-C-ParamSet */,
+    835 /* id-GostR3410-94-CryptoPro-D-ParamSet */,
+    836 /* id-GostR3410-94-CryptoPro-XchA-ParamSet */,
+    837 /* id-GostR3410-94-CryptoPro-XchB-ParamSet */,
+    838 /* id-GostR3410-94-CryptoPro-XchC-ParamSet */,
+    831 /* id-GostR3410-94-TestParamSet */,
+    845 /* id-GostR3410-94-a */,
+    846 /* id-GostR3410-94-aBis */,
+    847 /* id-GostR3410-94-b */,
+    848 /* id-GostR3410-94-bBis */,
+    822 /* id-GostR3411-94-CryptoProParamSet */,
+    821 /* id-GostR3411-94-TestParamSet */,
+    266 /* id-aca */,
+    355 /* id-aca-accessIdentity */,
+    354 /* id-aca-authenticationInfo */,
+    356 /* id-aca-chargingIdentity */,
+    399 /* id-aca-encAttrs */,
+    357 /* id-aca-group */,
+    358 /* id-aca-role */,
+    176 /* id-ad */,
+    788 /* id-aes128-wrap */,
+    897 /* id-aes128-wrap-pad */,
+    789 /* id-aes192-wrap */,
+    900 /* id-aes192-wrap-pad */,
+    790 /* id-aes256-wrap */,
+    903 /* id-aes256-wrap-pad */,
+    262 /* id-alg */,
+    893 /* id-alg-PWRI-KEK */,
+    323 /* id-alg-des40 */,
+    326 /* id-alg-dh-pop */,
+    325 /* id-alg-dh-sig-hmac-sha1 */,
+    324 /* id-alg-noSignature */,
+    907 /* id-camellia128-wrap */,
+    908 /* id-camellia192-wrap */,
+    909 /* id-camellia256-wrap */,
+    268 /* id-cct */,
+    361 /* id-cct-PKIData */,
+    362 /* id-cct-PKIResponse */,
+    360 /* id-cct-crs */,
+    81 /* id-ce */,
+    680 /* id-characteristic-two-basis */,
+    263 /* id-cmc */,
+    334 /* id-cmc-addExtensions */,
+    346 /* id-cmc-confirmCertAcceptance */,
+    330 /* id-cmc-dataReturn */,
+    336 /* id-cmc-decryptedPOP */,
+    335 /* id-cmc-encryptedPOP */,
+    339 /* id-cmc-getCRL */,
+    338 /* id-cmc-getCert */,
+    328 /* id-cmc-identification */,
+    329 /* id-cmc-identityProof */,
+    337 /* id-cmc-lraPOPWitness */,
+    344 /* id-cmc-popLinkRandom */,
+    345 /* id-cmc-popLinkWitness */,
+    343 /* id-cmc-queryPending */,
+    333 /* id-cmc-recipientNonce */,
+    341 /* id-cmc-regInfo */,
+    342 /* id-cmc-responseInfo */,
+    340 /* id-cmc-revokeRequest */,
+    332 /* id-cmc-senderNonce */,
+    327 /* id-cmc-statusInfo */,
+    331 /* id-cmc-transactionId */,
+    787 /* id-ct-asciiTextWithCRLF */,
+    408 /* id-ecPublicKey */,
+    508 /* id-hex-multipart-message */,
+    507 /* id-hex-partial-message */,
+    260 /* id-it */,
+    302 /* id-it-caKeyUpdateInfo */,
+    298 /* id-it-caProtEncCert */,
+    311 /* id-it-confirmWaitTime */,
+    303 /* id-it-currentCRL */,
+    300 /* id-it-encKeyPairTypes */,
+    310 /* id-it-implicitConfirm */,
+    308 /* id-it-keyPairParamRep */,
+    307 /* id-it-keyPairParamReq */,
+    312 /* id-it-origPKIMessage */,
+    301 /* id-it-preferredSymmAlg */,
+    309 /* id-it-revPassphrase */,
+    299 /* id-it-signKeyPairTypes */,
+    305 /* id-it-subscriptionRequest */,
+    306 /* id-it-subscriptionResponse */,
+    784 /* id-it-suppLangTags */,
+    304 /* id-it-unsupportedOIDs */,
+    128 /* id-kp */,
+    280 /* id-mod-attribute-cert */,
+    274 /* id-mod-cmc */,
+    277 /* id-mod-cmp */,
+    284 /* id-mod-cmp2000 */,
+    273 /* id-mod-crmf */,
+    283 /* id-mod-dvcs */,
+    275 /* id-mod-kea-profile-88 */,
+    276 /* id-mod-kea-profile-93 */,
+    282 /* id-mod-ocsp */,
+    278 /* id-mod-qualified-cert-88 */,
+    279 /* id-mod-qualified-cert-93 */,
+    281 /* id-mod-timestamp-protocol */,
+    264 /* id-on */,
+    347 /* id-on-personalData */,
+    265 /* id-pda */,
+    352 /* id-pda-countryOfCitizenship */,
+    353 /* id-pda-countryOfResidence */,
+    348 /* id-pda-dateOfBirth */,
+    351 /* id-pda-gender */,
+    349 /* id-pda-placeOfBirth */,
+    175 /* id-pe */,
+    261 /* id-pkip */,
+    258 /* id-pkix-mod */,
+    269 /* id-pkix1-explicit-88 */,
+    271 /* id-pkix1-explicit-93 */,
+    270 /* id-pkix1-implicit-88 */,
+    272 /* id-pkix1-implicit-93 */,
+    662 /* id-ppl */,
+    267 /* id-qcs */,
+    359 /* id-qcs-pkixQCSyntax-v1 */,
+    259 /* id-qt */,
+    313 /* id-regCtrl */,
+    316 /* id-regCtrl-authenticator */,
+    319 /* id-regCtrl-oldCertID */,
+    318 /* id-regCtrl-pkiArchiveOptions */,
+    317 /* id-regCtrl-pkiPublicationInfo */,
+    320 /* id-regCtrl-protocolEncrKey */,
+    315 /* id-regCtrl-regToken */,
+    314 /* id-regInfo */,
+    322 /* id-regInfo-certReq */,
+    321 /* id-regInfo-utf8Pairs */,
+    191 /* id-smime-aa */,
+    215 /* id-smime-aa-contentHint */,
+    218 /* id-smime-aa-contentIdentifier */,
+    221 /* id-smime-aa-contentReference */,
+    240 /* id-smime-aa-dvcs-dvc */,
+    217 /* id-smime-aa-encapContentType */,
+    222 /* id-smime-aa-encrypKeyPref */,
+    220 /* id-smime-aa-equivalentLabels */,
+    232 /* id-smime-aa-ets-CertificateRefs */,
+    233 /* id-smime-aa-ets-RevocationRefs */,
+    238 /* id-smime-aa-ets-archiveTimeStamp */,
+    237 /* id-smime-aa-ets-certCRLTimestamp */,
+    234 /* id-smime-aa-ets-certValues */,
+    227 /* id-smime-aa-ets-commitmentType */,
+    231 /* id-smime-aa-ets-contentTimestamp */,
+    236 /* id-smime-aa-ets-escTimeStamp */,
+    230 /* id-smime-aa-ets-otherSigCert */,
+    235 /* id-smime-aa-ets-revocationValues */,
+    226 /* id-smime-aa-ets-sigPolicyId */,
+    229 /* id-smime-aa-ets-signerAttr */,
+    228 /* id-smime-aa-ets-signerLocation */,
+    219 /* id-smime-aa-macValue */,
+    214 /* id-smime-aa-mlExpandHistory */,
+    216 /* id-smime-aa-msgSigDigest */,
+    212 /* id-smime-aa-receiptRequest */,
+    213 /* id-smime-aa-securityLabel */,
+    239 /* id-smime-aa-signatureType */,
+    223 /* id-smime-aa-signingCertificate */,
+    224 /* id-smime-aa-smimeEncryptCerts */,
+    225 /* id-smime-aa-timeStampToken */,
+    192 /* id-smime-alg */,
+    243 /* id-smime-alg-3DESwrap */,
+    246 /* id-smime-alg-CMS3DESwrap */,
+    247 /* id-smime-alg-CMSRC2wrap */,
+    245 /* id-smime-alg-ESDH */,
+    241 /* id-smime-alg-ESDHwith3DES */,
+    242 /* id-smime-alg-ESDHwithRC2 */,
+    244 /* id-smime-alg-RC2wrap */,
+    193 /* id-smime-cd */,
+    248 /* id-smime-cd-ldap */,
+    190 /* id-smime-ct */,
+    210 /* id-smime-ct-DVCSRequestData */,
+    211 /* id-smime-ct-DVCSResponseData */,
+    208 /* id-smime-ct-TDTInfo */,
+    207 /* id-smime-ct-TSTInfo */,
+    205 /* id-smime-ct-authData */,
+    786 /* id-smime-ct-compressedData */,
+    209 /* id-smime-ct-contentInfo */,
+    206 /* id-smime-ct-publishCert */,
+    204 /* id-smime-ct-receipt */,
+    195 /* id-smime-cti */,
+    255 /* id-smime-cti-ets-proofOfApproval */,
+    256 /* id-smime-cti-ets-proofOfCreation */,
+    253 /* id-smime-cti-ets-proofOfDelivery */,
+    251 /* id-smime-cti-ets-proofOfOrigin */,
+    252 /* id-smime-cti-ets-proofOfReceipt */,
+    254 /* id-smime-cti-ets-proofOfSender */,
+    189 /* id-smime-mod */,
+    196 /* id-smime-mod-cms */,
+    197 /* id-smime-mod-ess */,
+    202 /* id-smime-mod-ets-eSigPolicy-88 */,
+    203 /* id-smime-mod-ets-eSigPolicy-97 */,
+    200 /* id-smime-mod-ets-eSignature-88 */,
+    201 /* id-smime-mod-ets-eSignature-97 */,
+    199 /* id-smime-mod-msg-v3 */,
+    198 /* id-smime-mod-oid */,
+    194 /* id-smime-spq */,
+    250 /* id-smime-spq-ets-sqt-unotice */,
+    249 /* id-smime-spq-ets-sqt-uri */,
+    34 /* idea-cbc */,
+    35 /* idea-cfb */,
+    36 /* idea-ecb */,
+    46 /* idea-ofb */,
+    676 /* identified-organization */,
+    461 /* info */,
+    101 /* initials */,
+    869 /* internationaliSDNNumber */,
+    749 /* ipsec3 */,
+    750 /* ipsec4 */,
+    181 /* iso */,
+    623 /* issuer capabilities */,
+    645 /* itu-t */,
+    492 /* janetMailbox */,
+    646 /* joint-iso-itu-t */,
+    150 /* keyBag */,
+    773 /* kisa */,
+    957 /* kx-any */,
+    952 /* kx-ecdhe */,
+    953 /* kx-psk */,
+    951 /* kx-rsa */,
+    477 /* lastModifiedBy */,
+    476 /* lastModifiedTime */,
+    157 /* localKeyID */,
+    15 /* localityName */,
+    480 /* mXRecord */,
+    493 /* mailPreferenceOption */,
+    467 /* manager */,
+    3 /* md2 */,
+    7 /* md2WithRSAEncryption */,
+    257 /* md4 */,
+    396 /* md4WithRSAEncryption */,
+    4 /* md5 */,
+    114 /* md5-sha1 */,
+    104 /* md5WithRSA */,
+    8 /* md5WithRSAEncryption */,
+    95 /* mdc2 */,
+    96 /* mdc2WithRSA */,
+    875 /* member */,
+    602 /* merchant initiated auth */,
+    514 /* message extensions */,
+    51 /* messageDigest */,
+    911 /* mgf1 */,
+    506 /* mime-mhs-bodies */,
+    505 /* mime-mhs-headings */,
+    488 /* mobileTelephoneNumber */,
+    481 /* nSRecord */,
+    173 /* name */,
+    681 /* onBasis */,
+    379 /* org */,
+    17 /* organizationName */,
+    491 /* organizationalStatus */,
+    18 /* organizationalUnitName */,
+    475 /* otherMailbox */,
+    876 /* owner */,
+    935 /* pSpecified */,
+    489 /* pagerTelephoneNumber */,
+    782 /* password based MAC */,
+    374 /* path */,
+    621 /* payment gateway capabilities */,
+    9 /* pbeWithMD2AndDES-CBC */,
+    168 /* pbeWithMD2AndRC2-CBC */,
+    112 /* pbeWithMD5AndCast5CBC */,
+    10 /* pbeWithMD5AndDES-CBC */,
+    169 /* pbeWithMD5AndRC2-CBC */,
+    148 /* pbeWithSHA1And128BitRC2-CBC */,
+    144 /* pbeWithSHA1And128BitRC4 */,
+    147 /* pbeWithSHA1And2-KeyTripleDES-CBC */,
+    146 /* pbeWithSHA1And3-KeyTripleDES-CBC */,
+    149 /* pbeWithSHA1And40BitRC2-CBC */,
+    145 /* pbeWithSHA1And40BitRC4 */,
+    170 /* pbeWithSHA1AndDES-CBC */,
+    68 /* pbeWithSHA1AndRC2-CBC */,
+    499 /* personalSignature */,
+    487 /* personalTitle */,
+    464 /* photo */,
+    863 /* physicalDeliveryOfficeName */,
+    437 /* pilot */,
+    439 /* pilotAttributeSyntax */,
+    438 /* pilotAttributeType */,
+    479 /* pilotAttributeType27 */,
+    456 /* pilotDSA */,
+    441 /* pilotGroups */,
+    444 /* pilotObject */,
+    440 /* pilotObjectClass */,
+    455 /* pilotOrganization */,
+    445 /* pilotPerson */,
+    186 /* pkcs1 */,
+    27 /* pkcs3 */,
+    187 /* pkcs5 */,
+    20 /* pkcs7 */,
+    21 /* pkcs7-data */,
+    25 /* pkcs7-digestData */,
+    26 /* pkcs7-encryptedData */,
+    23 /* pkcs7-envelopedData */,
+    24 /* pkcs7-signedAndEnvelopedData */,
+    22 /* pkcs7-signedData */,
+    151 /* pkcs8ShroudedKeyBag */,
+    47 /* pkcs9 */,
+    862 /* postOfficeBox */,
+    861 /* postalAddress */,
+    661 /* postalCode */,
+    683 /* ppBasis */,
+    872 /* preferredDeliveryMethod */,
+    873 /* presentationAddress */,
+    406 /* prime-field */,
+    409 /* prime192v1 */,
+    410 /* prime192v2 */,
+    411 /* prime192v3 */,
+    412 /* prime239v1 */,
+    413 /* prime239v2 */,
+    414 /* prime239v3 */,
+    415 /* prime256v1 */,
+    886 /* protocolInformation */,
+    510 /* pseudonym */,
+    435 /* pss */,
+    286 /* qcStatements */,
+    457 /* qualityLabelledData */,
+    450 /* rFC822localPart */,
+    98 /* rc2-40-cbc */,
+    166 /* rc2-64-cbc */,
+    37 /* rc2-cbc */,
+    39 /* rc2-cfb */,
+    38 /* rc2-ecb */,
+    40 /* rc2-ofb */,
+    5 /* rc4 */,
+    97 /* rc4-40 */,
+    915 /* rc4-hmac-md5 */,
+    120 /* rc5-cbc */,
+    122 /* rc5-cfb */,
+    121 /* rc5-ecb */,
+    123 /* rc5-ofb */,
+    870 /* registeredAddress */,
+    460 /* rfc822Mailbox */,
+    117 /* ripemd160 */,
+    119 /* ripemd160WithRSA */,
+    400 /* role */,
+    877 /* roleOccupant */,
+    448 /* room */,
+    463 /* roomNumber */,
+    19 /* rsa */,
+    6 /* rsaEncryption */,
+    644 /* rsaOAEPEncryptionSET */,
+    377 /* rsaSignature */,
+    919 /* rsaesOaep */,
+    912 /* rsassaPss */,
+    482 /* sOARecord */,
+    155 /* safeContentsBag */,
+    291 /* sbgp-autonomousSysNum */,
+    290 /* sbgp-ipAddrBlock */,
+    292 /* sbgp-routerIdentifier */,
+    159 /* sdsiCertificate */,
+    859 /* searchGuide */,
+    704 /* secp112r1 */,
+    705 /* secp112r2 */,
+    706 /* secp128r1 */,
+    707 /* secp128r2 */,
+    708 /* secp160k1 */,
+    709 /* secp160r1 */,
+    710 /* secp160r2 */,
+    711 /* secp192k1 */,
+    712 /* secp224k1 */,
+    713 /* secp224r1 */,
+    714 /* secp256k1 */,
+    715 /* secp384r1 */,
+    716 /* secp521r1 */,
+    154 /* secretBag */,
+    474 /* secretary */,
+    717 /* sect113r1 */,
+    718 /* sect113r2 */,
+    719 /* sect131r1 */,
+    720 /* sect131r2 */,
+    721 /* sect163k1 */,
+    722 /* sect163r1 */,
+    723 /* sect163r2 */,
+    724 /* sect193r1 */,
+    725 /* sect193r2 */,
+    726 /* sect233k1 */,
+    727 /* sect233r1 */,
+    728 /* sect239k1 */,
+    729 /* sect283k1 */,
+    730 /* sect283r1 */,
+    731 /* sect409k1 */,
+    732 /* sect409r1 */,
+    733 /* sect571k1 */,
+    734 /* sect571r1 */,
+    635 /* secure device signature */,
+    878 /* seeAlso */,
+    777 /* seed-cbc */,
+    779 /* seed-cfb */,
+    776 /* seed-ecb */,
+    778 /* seed-ofb */,
+    105 /* serialNumber */,
+    625 /* set-addPolicy */,
+    515 /* set-attr */,
+    518 /* set-brand */,
+    638 /* set-brand-AmericanExpress */,
+    637 /* set-brand-Diners */,
+    636 /* set-brand-IATA-ATA */,
+    639 /* set-brand-JCB */,
+    641 /* set-brand-MasterCard */,
+    642 /* set-brand-Novus */,
+    640 /* set-brand-Visa */,
+    516 /* set-policy */,
+    607 /* set-policy-root */,
+    624 /* set-rootKeyThumb */,
+    620 /* setAttr-Cert */,
+    628 /* setAttr-IssCap-CVM */,
+    630 /* setAttr-IssCap-Sig */,
+    629 /* setAttr-IssCap-T2 */,
+    627 /* setAttr-Token-B0Prime */,
+    626 /* setAttr-Token-EMV */,
+    622 /* setAttr-TokenType */,
+    619 /* setCext-IssuerCapabilities */,
+    615 /* setCext-PGWYcapabilities */,
+    616 /* setCext-TokenIdentifier */,
+    618 /* setCext-TokenType */,
+    617 /* setCext-Track2Data */,
+    611 /* setCext-cCertRequired */,
+    609 /* setCext-certType */,
+    608 /* setCext-hashedRoot */,
+    610 /* setCext-merchData */,
+    613 /* setCext-setExt */,
+    614 /* setCext-setQualf */,
+    612 /* setCext-tunneling */,
+    540 /* setct-AcqCardCodeMsg */,
+    576 /* setct-AcqCardCodeMsgTBE */,
+    570 /* setct-AuthReqTBE */,
+    534 /* setct-AuthReqTBS */,
+    527 /* setct-AuthResBaggage */,
+    571 /* setct-AuthResTBE */,
+    572 /* setct-AuthResTBEX */,
+    535 /* setct-AuthResTBS */,
+    536 /* setct-AuthResTBSX */,
+    528 /* setct-AuthRevReqBaggage */,
+    577 /* setct-AuthRevReqTBE */,
+    541 /* setct-AuthRevReqTBS */,
+    529 /* setct-AuthRevResBaggage */,
+    542 /* setct-AuthRevResData */,
+    578 /* setct-AuthRevResTBE */,
+    579 /* setct-AuthRevResTBEB */,
+    543 /* setct-AuthRevResTBS */,
+    573 /* setct-AuthTokenTBE */,
+    537 /* setct-AuthTokenTBS */,
+    600 /* setct-BCIDistributionTBS */,
+    558 /* setct-BatchAdminReqData */,
+    592 /* setct-BatchAdminReqTBE */,
+    559 /* setct-BatchAdminResData */,
+    593 /* setct-BatchAdminResTBE */,
+    599 /* setct-CRLNotificationResTBS */,
+    598 /* setct-CRLNotificationTBS */,
+    580 /* setct-CapReqTBE */,
+    581 /* setct-CapReqTBEX */,
+    544 /* setct-CapReqTBS */,
+    545 /* setct-CapReqTBSX */,
+    546 /* setct-CapResData */,
+    582 /* setct-CapResTBE */,
+    583 /* setct-CapRevReqTBE */,
+    584 /* setct-CapRevReqTBEX */,
+    547 /* setct-CapRevReqTBS */,
+    548 /* setct-CapRevReqTBSX */,
+    549 /* setct-CapRevResData */,
+    585 /* setct-CapRevResTBE */,
+    538 /* setct-CapTokenData */,
+    530 /* setct-CapTokenSeq */,
+    574 /* setct-CapTokenTBE */,
+    575 /* setct-CapTokenTBEX */,
+    539 /* setct-CapTokenTBS */,
+    560 /* setct-CardCInitResTBS */,
+    566 /* setct-CertInqReqTBS */,
+    563 /* setct-CertReqData */,
+    595 /* setct-CertReqTBE */,
+    596 /* setct-CertReqTBEX */,
+    564 /* setct-CertReqTBS */,
+    565 /* setct-CertResData */,
+    597 /* setct-CertResTBE */,
+    586 /* setct-CredReqTBE */,
+    587 /* setct-CredReqTBEX */,
+    550 /* setct-CredReqTBS */,
+    551 /* setct-CredReqTBSX */,
+    552 /* setct-CredResData */,
+    588 /* setct-CredResTBE */,
+    589 /* setct-CredRevReqTBE */,
+    590 /* setct-CredRevReqTBEX */,
+    553 /* setct-CredRevReqTBS */,
+    554 /* setct-CredRevReqTBSX */,
+    555 /* setct-CredRevResData */,
+    591 /* setct-CredRevResTBE */,
+    567 /* setct-ErrorTBS */,
+    526 /* setct-HODInput */,
+    561 /* setct-MeAqCInitResTBS */,
+    522 /* setct-OIData */,
+    519 /* setct-PANData */,
+    521 /* setct-PANOnly */,
+    520 /* setct-PANToken */,
+    556 /* setct-PCertReqData */,
+    557 /* setct-PCertResTBS */,
+    523 /* setct-PI */,
+    532 /* setct-PI-TBS */,
+    524 /* setct-PIData */,
+    525 /* setct-PIDataUnsigned */,
+    568 /* setct-PIDualSignedTBE */,
+    569 /* setct-PIUnsignedTBE */,
+    531 /* setct-PInitResData */,
+    533 /* setct-PResData */,
+    594 /* setct-RegFormReqTBE */,
+    562 /* setct-RegFormResTBS */,
+    604 /* setext-pinAny */,
+    603 /* setext-pinSecure */,
+    605 /* setext-track2 */,
+    41 /* sha */,
+    64 /* sha1 */,
+    115 /* sha1WithRSA */,
+    65 /* sha1WithRSAEncryption */,
+    675 /* sha224 */,
+    671 /* sha224WithRSAEncryption */,
+    672 /* sha256 */,
+    668 /* sha256WithRSAEncryption */,
+    673 /* sha384 */,
+    669 /* sha384WithRSAEncryption */,
+    674 /* sha512 */,
+    670 /* sha512WithRSAEncryption */,
+    42 /* shaWithRSAEncryption */,
+    52 /* signingTime */,
+    454 /* simpleSecurityObject */,
+    496 /* singleLevelQuality */,
+    16 /* stateOrProvinceName */,
+    660 /* streetAddress */,
+    498 /* subtreeMaximumQuality */,
+    497 /* subtreeMinimumQuality */,
+    890 /* supportedAlgorithms */,
+    874 /* supportedApplicationContext */,
+    100 /* surname */,
+    864 /* telephoneNumber */,
+    866 /* teletexTerminalIdentifier */,
+    865 /* telexNumber */,
+    459 /* textEncodedORAddress */,
+    293 /* textNotice */,
+    106 /* title */,
+    682 /* tpBasis */,
+    436 /* ucl */,
+    0 /* undefined */,
+    888 /* uniqueMember */,
+    55 /* unstructuredAddress */,
+    49 /* unstructuredName */,
+    880 /* userCertificate */,
+    465 /* userClass */,
+    458 /* userId */,
+    879 /* userPassword */,
+    373 /* valid */,
+    678 /* wap */,
+    679 /* wap-wsg */,
+    735 /* wap-wsg-idm-ecid-wtls1 */,
+    743 /* wap-wsg-idm-ecid-wtls10 */,
+    744 /* wap-wsg-idm-ecid-wtls11 */,
+    745 /* wap-wsg-idm-ecid-wtls12 */,
+    736 /* wap-wsg-idm-ecid-wtls3 */,
+    737 /* wap-wsg-idm-ecid-wtls4 */,
+    738 /* wap-wsg-idm-ecid-wtls5 */,
+    739 /* wap-wsg-idm-ecid-wtls6 */,
+    740 /* wap-wsg-idm-ecid-wtls7 */,
+    741 /* wap-wsg-idm-ecid-wtls8 */,
+    742 /* wap-wsg-idm-ecid-wtls9 */,
+    804 /* whirlpool */,
+    868 /* x121Address */,
+    503 /* x500UniqueIdentifier */,
+    158 /* x509Certificate */,
+    160 /* x509Crl */,
+    125 /* zlib compression */,
+};
+
+static const uint16_t kNIDsInOIDOrder[] = {
+    434 /* 0.9 (OBJ_data) */,
+    182 /* 1.2 (OBJ_member_body) */,
+    379 /* 1.3 (OBJ_org) */,
+    676 /* 1.3 (OBJ_identified_organization) */,
+    11 /* 2.5 (OBJ_X500) */,
+    647 /* 2.23 (OBJ_international_organizations) */,
+    380 /* 1.3.6 (OBJ_dod) */,
+    12 /* 2.5.4 (OBJ_X509) */,
+    378 /* 2.5.8 (OBJ_X500algorithms) */,
+    81 /* 2.5.29 (OBJ_id_ce) */,
+    512 /* 2.23.42 (OBJ_id_set) */,
+    678 /* 2.23.43 (OBJ_wap) */,
+    435 /* 0.9.2342 (OBJ_pss) */,
+    183 /* 1.2.840 (OBJ_ISO_US) */,
+    381 /* 1.3.6.1 (OBJ_iana) */,
+    948 /* 1.3.101.110 (OBJ_X25519) */,
+    961 /* 1.3.101.111 (OBJ_X448) */,
+    949 /* 1.3.101.112 (OBJ_ED25519) */,
+    960 /* 1.3.101.113 (OBJ_ED448) */,
+    677 /* 1.3.132 (OBJ_certicom_arc) */,
+    394 /* 2.5.1.5 (OBJ_selected_attribute_types) */,
+    13 /* 2.5.4.3 (OBJ_commonName) */,
+    100 /* 2.5.4.4 (OBJ_surname) */,
+    105 /* 2.5.4.5 (OBJ_serialNumber) */,
+    14 /* 2.5.4.6 (OBJ_countryName) */,
+    15 /* 2.5.4.7 (OBJ_localityName) */,
+    16 /* 2.5.4.8 (OBJ_stateOrProvinceName) */,
+    660 /* 2.5.4.9 (OBJ_streetAddress) */,
+    17 /* 2.5.4.10 (OBJ_organizationName) */,
+    18 /* 2.5.4.11 (OBJ_organizationalUnitName) */,
+    106 /* 2.5.4.12 (OBJ_title) */,
+    107 /* 2.5.4.13 (OBJ_description) */,
+    859 /* 2.5.4.14 (OBJ_searchGuide) */,
+    860 /* 2.5.4.15 (OBJ_businessCategory) */,
+    861 /* 2.5.4.16 (OBJ_postalAddress) */,
+    661 /* 2.5.4.17 (OBJ_postalCode) */,
+    862 /* 2.5.4.18 (OBJ_postOfficeBox) */,
+    863 /* 2.5.4.19 (OBJ_physicalDeliveryOfficeName) */,
+    864 /* 2.5.4.20 (OBJ_telephoneNumber) */,
+    865 /* 2.5.4.21 (OBJ_telexNumber) */,
+    866 /* 2.5.4.22 (OBJ_teletexTerminalIdentifier) */,
+    867 /* 2.5.4.23 (OBJ_facsimileTelephoneNumber) */,
+    868 /* 2.5.4.24 (OBJ_x121Address) */,
+    869 /* 2.5.4.25 (OBJ_internationaliSDNNumber) */,
+    870 /* 2.5.4.26 (OBJ_registeredAddress) */,
+    871 /* 2.5.4.27 (OBJ_destinationIndicator) */,
+    872 /* 2.5.4.28 (OBJ_preferredDeliveryMethod) */,
+    873 /* 2.5.4.29 (OBJ_presentationAddress) */,
+    874 /* 2.5.4.30 (OBJ_supportedApplicationContext) */,
+    875 /* 2.5.4.31 (OBJ_member) */,
+    876 /* 2.5.4.32 (OBJ_owner) */,
+    877 /* 2.5.4.33 (OBJ_roleOccupant) */,
+    878 /* 2.5.4.34 (OBJ_seeAlso) */,
+    879 /* 2.5.4.35 (OBJ_userPassword) */,
+    880 /* 2.5.4.36 (OBJ_userCertificate) */,
+    881 /* 2.5.4.37 (OBJ_cACertificate) */,
+    882 /* 2.5.4.38 (OBJ_authorityRevocationList) */,
+    883 /* 2.5.4.39 (OBJ_certificateRevocationList) */,
+    884 /* 2.5.4.40 (OBJ_crossCertificatePair) */,
+    173 /* 2.5.4.41 (OBJ_name) */,
+    99 /* 2.5.4.42 (OBJ_givenName) */,
+    101 /* 2.5.4.43 (OBJ_initials) */,
+    509 /* 2.5.4.44 (OBJ_generationQualifier) */,
+    503 /* 2.5.4.45 (OBJ_x500UniqueIdentifier) */,
+    174 /* 2.5.4.46 (OBJ_dnQualifier) */,
+    885 /* 2.5.4.47 (OBJ_enhancedSearchGuide) */,
+    886 /* 2.5.4.48 (OBJ_protocolInformation) */,
+    887 /* 2.5.4.49 (OBJ_distinguishedName) */,
+    888 /* 2.5.4.50 (OBJ_uniqueMember) */,
+    889 /* 2.5.4.51 (OBJ_houseIdentifier) */,
+    890 /* 2.5.4.52 (OBJ_supportedAlgorithms) */,
+    891 /* 2.5.4.53 (OBJ_deltaRevocationList) */,
+    892 /* 2.5.4.54 (OBJ_dmdName) */,
+    510 /* 2.5.4.65 (OBJ_pseudonym) */,
+    400 /* 2.5.4.72 (OBJ_role) */,
+    769 /* 2.5.29.9 (OBJ_subject_directory_attributes) */,
+    82 /* 2.5.29.14 (OBJ_subject_key_identifier) */,
+    83 /* 2.5.29.15 (OBJ_key_usage) */,
+    84 /* 2.5.29.16 (OBJ_private_key_usage_period) */,
+    85 /* 2.5.29.17 (OBJ_subject_alt_name) */,
+    86 /* 2.5.29.18 (OBJ_issuer_alt_name) */,
+    87 /* 2.5.29.19 (OBJ_basic_constraints) */,
+    88 /* 2.5.29.20 (OBJ_crl_number) */,
+    141 /* 2.5.29.21 (OBJ_crl_reason) */,
+    430 /* 2.5.29.23 (OBJ_hold_instruction_code) */,
+    142 /* 2.5.29.24 (OBJ_invalidity_date) */,
+    140 /* 2.5.29.27 (OBJ_delta_crl) */,
+    770 /* 2.5.29.28 (OBJ_issuing_distribution_point) */,
+    771 /* 2.5.29.29 (OBJ_certificate_issuer) */,
+    666 /* 2.5.29.30 (OBJ_name_constraints) */,
+    103 /* 2.5.29.31 (OBJ_crl_distribution_points) */,
+    89 /* 2.5.29.32 (OBJ_certificate_policies) */,
+    747 /* 2.5.29.33 (OBJ_policy_mappings) */,
+    90 /* 2.5.29.35 (OBJ_authority_key_identifier) */,
+    401 /* 2.5.29.36 (OBJ_policy_constraints) */,
+    126 /* 2.5.29.37 (OBJ_ext_key_usage) */,
+    857 /* 2.5.29.46 (OBJ_freshest_crl) */,
+    748 /* 2.5.29.54 (OBJ_inhibit_any_policy) */,
+    402 /* 2.5.29.55 (OBJ_target_information) */,
+    403 /* 2.5.29.56 (OBJ_no_rev_avail) */,
+    513 /* 2.23.42.0 (OBJ_set_ctype) */,
+    514 /* 2.23.42.1 (OBJ_set_msgExt) */,
+    515 /* 2.23.42.3 (OBJ_set_attr) */,
+    516 /* 2.23.42.5 (OBJ_set_policy) */,
+    517 /* 2.23.42.7 (OBJ_set_certExt) */,
+    518 /* 2.23.42.8 (OBJ_set_brand) */,
+    679 /* 2.23.43.1 (OBJ_wap_wsg) */,
+    382 /* 1.3.6.1.1 (OBJ_Directory) */,
+    383 /* 1.3.6.1.2 (OBJ_Management) */,
+    384 /* 1.3.6.1.3 (OBJ_Experimental) */,
+    385 /* 1.3.6.1.4 (OBJ_Private) */,
+    386 /* 1.3.6.1.5 (OBJ_Security) */,
+    387 /* 1.3.6.1.6 (OBJ_SNMPv2) */,
+    388 /* 1.3.6.1.7 (OBJ_Mail) */,
+    376 /* 1.3.14.3.2 (OBJ_algorithm) */,
+    395 /* 2.5.1.5.55 (OBJ_clearance) */,
+    19 /* 2.5.8.1.1 (OBJ_rsa) */,
+    96 /* 2.5.8.3.100 (OBJ_mdc2WithRSA) */,
+    95 /* 2.5.8.3.101 (OBJ_mdc2) */,
+    746 /* 2.5.29.32.0 (OBJ_any_policy) */,
+    910 /* 2.5.29.37.0 (OBJ_anyExtendedKeyUsage) */,
+    519 /* 2.23.42.0.0 (OBJ_setct_PANData) */,
+    520 /* 2.23.42.0.1 (OBJ_setct_PANToken) */,
+    521 /* 2.23.42.0.2 (OBJ_setct_PANOnly) */,
+    522 /* 2.23.42.0.3 (OBJ_setct_OIData) */,
+    523 /* 2.23.42.0.4 (OBJ_setct_PI) */,
+    524 /* 2.23.42.0.5 (OBJ_setct_PIData) */,
+    525 /* 2.23.42.0.6 (OBJ_setct_PIDataUnsigned) */,
+    526 /* 2.23.42.0.7 (OBJ_setct_HODInput) */,
+    527 /* 2.23.42.0.8 (OBJ_setct_AuthResBaggage) */,
+    528 /* 2.23.42.0.9 (OBJ_setct_AuthRevReqBaggage) */,
+    529 /* 2.23.42.0.10 (OBJ_setct_AuthRevResBaggage) */,
+    530 /* 2.23.42.0.11 (OBJ_setct_CapTokenSeq) */,
+    531 /* 2.23.42.0.12 (OBJ_setct_PInitResData) */,
+    532 /* 2.23.42.0.13 (OBJ_setct_PI_TBS) */,
+    533 /* 2.23.42.0.14 (OBJ_setct_PResData) */,
+    534 /* 2.23.42.0.16 (OBJ_setct_AuthReqTBS) */,
+    535 /* 2.23.42.0.17 (OBJ_setct_AuthResTBS) */,
+    536 /* 2.23.42.0.18 (OBJ_setct_AuthResTBSX) */,
+    537 /* 2.23.42.0.19 (OBJ_setct_AuthTokenTBS) */,
+    538 /* 2.23.42.0.20 (OBJ_setct_CapTokenData) */,
+    539 /* 2.23.42.0.21 (OBJ_setct_CapTokenTBS) */,
+    540 /* 2.23.42.0.22 (OBJ_setct_AcqCardCodeMsg) */,
+    541 /* 2.23.42.0.23 (OBJ_setct_AuthRevReqTBS) */,
+    542 /* 2.23.42.0.24 (OBJ_setct_AuthRevResData) */,
+    543 /* 2.23.42.0.25 (OBJ_setct_AuthRevResTBS) */,
+    544 /* 2.23.42.0.26 (OBJ_setct_CapReqTBS) */,
+    545 /* 2.23.42.0.27 (OBJ_setct_CapReqTBSX) */,
+    546 /* 2.23.42.0.28 (OBJ_setct_CapResData) */,
+    547 /* 2.23.42.0.29 (OBJ_setct_CapRevReqTBS) */,
+    548 /* 2.23.42.0.30 (OBJ_setct_CapRevReqTBSX) */,
+    549 /* 2.23.42.0.31 (OBJ_setct_CapRevResData) */,
+    550 /* 2.23.42.0.32 (OBJ_setct_CredReqTBS) */,
+    551 /* 2.23.42.0.33 (OBJ_setct_CredReqTBSX) */,
+    552 /* 2.23.42.0.34 (OBJ_setct_CredResData) */,
+    553 /* 2.23.42.0.35 (OBJ_setct_CredRevReqTBS) */,
+    554 /* 2.23.42.0.36 (OBJ_setct_CredRevReqTBSX) */,
+    555 /* 2.23.42.0.37 (OBJ_setct_CredRevResData) */,
+    556 /* 2.23.42.0.38 (OBJ_setct_PCertReqData) */,
+    557 /* 2.23.42.0.39 (OBJ_setct_PCertResTBS) */,
+    558 /* 2.23.42.0.40 (OBJ_setct_BatchAdminReqData) */,
+    559 /* 2.23.42.0.41 (OBJ_setct_BatchAdminResData) */,
+    560 /* 2.23.42.0.42 (OBJ_setct_CardCInitResTBS) */,
+    561 /* 2.23.42.0.43 (OBJ_setct_MeAqCInitResTBS) */,
+    562 /* 2.23.42.0.44 (OBJ_setct_RegFormResTBS) */,
+    563 /* 2.23.42.0.45 (OBJ_setct_CertReqData) */,
+    564 /* 2.23.42.0.46 (OBJ_setct_CertReqTBS) */,
+    565 /* 2.23.42.0.47 (OBJ_setct_CertResData) */,
+    566 /* 2.23.42.0.48 (OBJ_setct_CertInqReqTBS) */,
+    567 /* 2.23.42.0.49 (OBJ_setct_ErrorTBS) */,
+    568 /* 2.23.42.0.50 (OBJ_setct_PIDualSignedTBE) */,
+    569 /* 2.23.42.0.51 (OBJ_setct_PIUnsignedTBE) */,
+    570 /* 2.23.42.0.52 (OBJ_setct_AuthReqTBE) */,
+    571 /* 2.23.42.0.53 (OBJ_setct_AuthResTBE) */,
+    572 /* 2.23.42.0.54 (OBJ_setct_AuthResTBEX) */,
+    573 /* 2.23.42.0.55 (OBJ_setct_AuthTokenTBE) */,
+    574 /* 2.23.42.0.56 (OBJ_setct_CapTokenTBE) */,
+    575 /* 2.23.42.0.57 (OBJ_setct_CapTokenTBEX) */,
+    576 /* 2.23.42.0.58 (OBJ_setct_AcqCardCodeMsgTBE) */,
+    577 /* 2.23.42.0.59 (OBJ_setct_AuthRevReqTBE) */,
+    578 /* 2.23.42.0.60 (OBJ_setct_AuthRevResTBE) */,
+    579 /* 2.23.42.0.61 (OBJ_setct_AuthRevResTBEB) */,
+    580 /* 2.23.42.0.62 (OBJ_setct_CapReqTBE) */,
+    581 /* 2.23.42.0.63 (OBJ_setct_CapReqTBEX) */,
+    582 /* 2.23.42.0.64 (OBJ_setct_CapResTBE) */,
+    583 /* 2.23.42.0.65 (OBJ_setct_CapRevReqTBE) */,
+    584 /* 2.23.42.0.66 (OBJ_setct_CapRevReqTBEX) */,
+    585 /* 2.23.42.0.67 (OBJ_setct_CapRevResTBE) */,
+    586 /* 2.23.42.0.68 (OBJ_setct_CredReqTBE) */,
+    587 /* 2.23.42.0.69 (OBJ_setct_CredReqTBEX) */,
+    588 /* 2.23.42.0.70 (OBJ_setct_CredResTBE) */,
+    589 /* 2.23.42.0.71 (OBJ_setct_CredRevReqTBE) */,
+    590 /* 2.23.42.0.72 (OBJ_setct_CredRevReqTBEX) */,
+    591 /* 2.23.42.0.73 (OBJ_setct_CredRevResTBE) */,
+    592 /* 2.23.42.0.74 (OBJ_setct_BatchAdminReqTBE) */,
+    593 /* 2.23.42.0.75 (OBJ_setct_BatchAdminResTBE) */,
+    594 /* 2.23.42.0.76 (OBJ_setct_RegFormReqTBE) */,
+    595 /* 2.23.42.0.77 (OBJ_setct_CertReqTBE) */,
+    596 /* 2.23.42.0.78 (OBJ_setct_CertReqTBEX) */,
+    597 /* 2.23.42.0.79 (OBJ_setct_CertResTBE) */,
+    598 /* 2.23.42.0.80 (OBJ_setct_CRLNotificationTBS) */,
+    599 /* 2.23.42.0.81 (OBJ_setct_CRLNotificationResTBS) */,
+    600 /* 2.23.42.0.82 (OBJ_setct_BCIDistributionTBS) */,
+    601 /* 2.23.42.1.1 (OBJ_setext_genCrypt) */,
+    602 /* 2.23.42.1.3 (OBJ_setext_miAuth) */,
+    603 /* 2.23.42.1.4 (OBJ_setext_pinSecure) */,
+    604 /* 2.23.42.1.5 (OBJ_setext_pinAny) */,
+    605 /* 2.23.42.1.7 (OBJ_setext_track2) */,
+    606 /* 2.23.42.1.8 (OBJ_setext_cv) */,
+    620 /* 2.23.42.3.0 (OBJ_setAttr_Cert) */,
+    621 /* 2.23.42.3.1 (OBJ_setAttr_PGWYcap) */,
+    622 /* 2.23.42.3.2 (OBJ_setAttr_TokenType) */,
+    623 /* 2.23.42.3.3 (OBJ_setAttr_IssCap) */,
+    607 /* 2.23.42.5.0 (OBJ_set_policy_root) */,
+    608 /* 2.23.42.7.0 (OBJ_setCext_hashedRoot) */,
+    609 /* 2.23.42.7.1 (OBJ_setCext_certType) */,
+    610 /* 2.23.42.7.2 (OBJ_setCext_merchData) */,
+    611 /* 2.23.42.7.3 (OBJ_setCext_cCertRequired) */,
+    612 /* 2.23.42.7.4 (OBJ_setCext_tunneling) */,
+    613 /* 2.23.42.7.5 (OBJ_setCext_setExt) */,
+    614 /* 2.23.42.7.6 (OBJ_setCext_setQualf) */,
+    615 /* 2.23.42.7.7 (OBJ_setCext_PGWYcapabilities) */,
+    616 /* 2.23.42.7.8 (OBJ_setCext_TokenIdentifier) */,
+    617 /* 2.23.42.7.9 (OBJ_setCext_Track2Data) */,
+    618 /* 2.23.42.7.10 (OBJ_setCext_TokenType) */,
+    619 /* 2.23.42.7.11 (OBJ_setCext_IssuerCapabilities) */,
+    636 /* 2.23.42.8.1 (OBJ_set_brand_IATA_ATA) */,
+    640 /* 2.23.42.8.4 (OBJ_set_brand_Visa) */,
+    641 /* 2.23.42.8.5 (OBJ_set_brand_MasterCard) */,
+    637 /* 2.23.42.8.30 (OBJ_set_brand_Diners) */,
+    638 /* 2.23.42.8.34 (OBJ_set_brand_AmericanExpress) */,
+    639 /* 2.23.42.8.35 (OBJ_set_brand_JCB) */,
+    805 /* 1.2.643.2.2 (OBJ_cryptopro) */,
+    806 /* 1.2.643.2.9 (OBJ_cryptocom) */,
+    184 /* 1.2.840.10040 (OBJ_X9_57) */,
+    405 /* 1.2.840.10045 (OBJ_ansi_X9_62) */,
+    389 /* 1.3.6.1.4.1 (OBJ_Enterprises) */,
+    504 /* 1.3.6.1.7.1 (OBJ_mime_mhs) */,
+    104 /* 1.3.14.3.2.3 (OBJ_md5WithRSA) */,
+    29 /* 1.3.14.3.2.6 (OBJ_des_ecb) */,
+    31 /* 1.3.14.3.2.7 (OBJ_des_cbc) */,
+    45 /* 1.3.14.3.2.8 (OBJ_des_ofb64) */,
+    30 /* 1.3.14.3.2.9 (OBJ_des_cfb64) */,
+    377 /* 1.3.14.3.2.11 (OBJ_rsaSignature) */,
+    67 /* 1.3.14.3.2.12 (OBJ_dsa_2) */,
+    66 /* 1.3.14.3.2.13 (OBJ_dsaWithSHA) */,
+    42 /* 1.3.14.3.2.15 (OBJ_shaWithRSAEncryption) */,
+    32 /* 1.3.14.3.2.17 (OBJ_des_ede_ecb) */,
+    41 /* 1.3.14.3.2.18 (OBJ_sha) */,
+    64 /* 1.3.14.3.2.26 (OBJ_sha1) */,
+    70 /* 1.3.14.3.2.27 (OBJ_dsaWithSHA1_2) */,
+    115 /* 1.3.14.3.2.29 (OBJ_sha1WithRSA) */,
+    117 /* 1.3.36.3.2.1 (OBJ_ripemd160) */,
+    143 /* 1.3.101.1.4.1 (OBJ_sxnet) */,
+    721 /* 1.3.132.0.1 (OBJ_sect163k1) */,
+    722 /* 1.3.132.0.2 (OBJ_sect163r1) */,
+    728 /* 1.3.132.0.3 (OBJ_sect239k1) */,
+    717 /* 1.3.132.0.4 (OBJ_sect113r1) */,
+    718 /* 1.3.132.0.5 (OBJ_sect113r2) */,
+    704 /* 1.3.132.0.6 (OBJ_secp112r1) */,
+    705 /* 1.3.132.0.7 (OBJ_secp112r2) */,
+    709 /* 1.3.132.0.8 (OBJ_secp160r1) */,
+    708 /* 1.3.132.0.9 (OBJ_secp160k1) */,
+    714 /* 1.3.132.0.10 (OBJ_secp256k1) */,
+    723 /* 1.3.132.0.15 (OBJ_sect163r2) */,
+    729 /* 1.3.132.0.16 (OBJ_sect283k1) */,
+    730 /* 1.3.132.0.17 (OBJ_sect283r1) */,
+    719 /* 1.3.132.0.22 (OBJ_sect131r1) */,
+    720 /* 1.3.132.0.23 (OBJ_sect131r2) */,
+    724 /* 1.3.132.0.24 (OBJ_sect193r1) */,
+    725 /* 1.3.132.0.25 (OBJ_sect193r2) */,
+    726 /* 1.3.132.0.26 (OBJ_sect233k1) */,
+    727 /* 1.3.132.0.27 (OBJ_sect233r1) */,
+    706 /* 1.3.132.0.28 (OBJ_secp128r1) */,
+    707 /* 1.3.132.0.29 (OBJ_secp128r2) */,
+    710 /* 1.3.132.0.30 (OBJ_secp160r2) */,
+    711 /* 1.3.132.0.31 (OBJ_secp192k1) */,
+    712 /* 1.3.132.0.32 (OBJ_secp224k1) */,
+    713 /* 1.3.132.0.33 (OBJ_secp224r1) */,
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+    828 /* 1.2.643.2.2.31.5 (OBJ_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet)
+         */
+    ,
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+         */
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+    794 /* 1.2.840.10045.4.3.2 (OBJ_ecdsa_with_SHA256) */,
+    795 /* 1.2.840.10045.4.3.3 (OBJ_ecdsa_with_SHA384) */,
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+    295 /* 1.3.6.1.5.5.7.3.6 (OBJ_ipsecTunnel) */,
+    296 /* 1.3.6.1.5.5.7.3.7 (OBJ_ipsecUser) */,
+    133 /* 1.3.6.1.5.5.7.3.8 (OBJ_time_stamp) */,
+    180 /* 1.3.6.1.5.5.7.3.9 (OBJ_OCSP_sign) */,
+    297 /* 1.3.6.1.5.5.7.3.10 (OBJ_dvcs) */,
+    298 /* 1.3.6.1.5.5.7.4.1 (OBJ_id_it_caProtEncCert) */,
+    299 /* 1.3.6.1.5.5.7.4.2 (OBJ_id_it_signKeyPairTypes) */,
+    300 /* 1.3.6.1.5.5.7.4.3 (OBJ_id_it_encKeyPairTypes) */,
+    301 /* 1.3.6.1.5.5.7.4.4 (OBJ_id_it_preferredSymmAlg) */,
+    302 /* 1.3.6.1.5.5.7.4.5 (OBJ_id_it_caKeyUpdateInfo) */,
+    303 /* 1.3.6.1.5.5.7.4.6 (OBJ_id_it_currentCRL) */,
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+    23 /* 1.2.840.113549.1.7.3 (OBJ_pkcs7_enveloped) */,
+    24 /* 1.2.840.113549.1.7.4 (OBJ_pkcs7_signedAndEnveloped) */,
+    25 /* 1.2.840.113549.1.7.5 (OBJ_pkcs7_digest) */,
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+    49 /* 1.2.840.113549.1.9.2 (OBJ_pkcs9_unstructuredName) */,
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+    54 /* 1.2.840.113549.1.9.7 (OBJ_pkcs9_challengePassword) */,
+    55 /* 1.2.840.113549.1.9.8 (OBJ_pkcs9_unstructuredAddress) */,
+    56 /* 1.2.840.113549.1.9.9 (OBJ_pkcs9_extCertAttributes) */,
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+    941 /* 1.3.133.16.840.63.0.3 (OBJ_dhSinglePass_cofactorDH_sha1kdf_scheme) */
+    ,
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+    803 /* 2.16.840.1.101.3.4.3.2 (OBJ_dsa_with_SHA256) */,
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+    464 /* 0.9.2342.19200300.100.1.7 (OBJ_photo) */,
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+    467 /* 0.9.2342.19200300.100.1.10 (OBJ_manager) */,
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+    469 /* 0.9.2342.19200300.100.1.12 (OBJ_documentTitle) */,
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+    471 /* 0.9.2342.19200300.100.1.14 (OBJ_documentAuthor) */,
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+    473 /* 0.9.2342.19200300.100.1.20 (OBJ_homeTelephoneNumber) */,
+    474 /* 0.9.2342.19200300.100.1.21 (OBJ_secretary) */,
+    475 /* 0.9.2342.19200300.100.1.22 (OBJ_otherMailbox) */,
+    476 /* 0.9.2342.19200300.100.1.23 (OBJ_lastModifiedTime) */,
+    477 /* 0.9.2342.19200300.100.1.24 (OBJ_lastModifiedBy) */,
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+    481 /* 0.9.2342.19200300.100.1.29 (OBJ_nSRecord) */,
+    482 /* 0.9.2342.19200300.100.1.30 (OBJ_sOARecord) */,
+    483 /* 0.9.2342.19200300.100.1.31 (OBJ_cNAMERecord) */,
+    484 /* 0.9.2342.19200300.100.1.37 (OBJ_associatedDomain) */,
+    485 /* 0.9.2342.19200300.100.1.38 (OBJ_associatedName) */,
+    486 /* 0.9.2342.19200300.100.1.39 (OBJ_homePostalAddress) */,
+    487 /* 0.9.2342.19200300.100.1.40 (OBJ_personalTitle) */,
+    488 /* 0.9.2342.19200300.100.1.41 (OBJ_mobileTelephoneNumber) */,
+    489 /* 0.9.2342.19200300.100.1.42 (OBJ_pagerTelephoneNumber) */,
+    490 /* 0.9.2342.19200300.100.1.43 (OBJ_friendlyCountryName) */,
+    491 /* 0.9.2342.19200300.100.1.45 (OBJ_organizationalStatus) */,
+    492 /* 0.9.2342.19200300.100.1.46 (OBJ_janetMailbox) */,
+    493 /* 0.9.2342.19200300.100.1.47 (OBJ_mailPreferenceOption) */,
+    494 /* 0.9.2342.19200300.100.1.48 (OBJ_buildingName) */,
+    495 /* 0.9.2342.19200300.100.1.49 (OBJ_dSAQuality) */,
+    496 /* 0.9.2342.19200300.100.1.50 (OBJ_singleLevelQuality) */,
+    497 /* 0.9.2342.19200300.100.1.51 (OBJ_subtreeMinimumQuality) */,
+    498 /* 0.9.2342.19200300.100.1.52 (OBJ_subtreeMaximumQuality) */,
+    499 /* 0.9.2342.19200300.100.1.53 (OBJ_personalSignature) */,
+    500 /* 0.9.2342.19200300.100.1.54 (OBJ_dITRedirect) */,
+    501 /* 0.9.2342.19200300.100.1.55 (OBJ_audio) */,
+    502 /* 0.9.2342.19200300.100.1.56 (OBJ_documentPublisher) */,
+    442 /* 0.9.2342.19200300.100.3.4 (OBJ_iA5StringSyntax) */,
+    443 /* 0.9.2342.19200300.100.3.5 (OBJ_caseIgnoreIA5StringSyntax) */,
+    444 /* 0.9.2342.19200300.100.4.3 (OBJ_pilotObject) */,
+    445 /* 0.9.2342.19200300.100.4.4 (OBJ_pilotPerson) */,
+    446 /* 0.9.2342.19200300.100.4.5 (OBJ_account) */,
+    447 /* 0.9.2342.19200300.100.4.6 (OBJ_document) */,
+    448 /* 0.9.2342.19200300.100.4.7 (OBJ_room) */,
+    449 /* 0.9.2342.19200300.100.4.9 (OBJ_documentSeries) */,
+    392 /* 0.9.2342.19200300.100.4.13 (OBJ_Domain) */,
+    450 /* 0.9.2342.19200300.100.4.14 (OBJ_rFC822localPart) */,
+    451 /* 0.9.2342.19200300.100.4.15 (OBJ_dNSDomain) */,
+    452 /* 0.9.2342.19200300.100.4.17 (OBJ_domainRelatedObject) */,
+    453 /* 0.9.2342.19200300.100.4.18 (OBJ_friendlyCountry) */,
+    454 /* 0.9.2342.19200300.100.4.19 (OBJ_simpleSecurityObject) */,
+    455 /* 0.9.2342.19200300.100.4.20 (OBJ_pilotOrganization) */,
+    456 /* 0.9.2342.19200300.100.4.21 (OBJ_pilotDSA) */,
+    457 /* 0.9.2342.19200300.100.4.22 (OBJ_qualityLabelledData) */,
+    189 /* 1.2.840.113549.1.9.16.0 (OBJ_id_smime_mod) */,
+    190 /* 1.2.840.113549.1.9.16.1 (OBJ_id_smime_ct) */,
+    191 /* 1.2.840.113549.1.9.16.2 (OBJ_id_smime_aa) */,
+    192 /* 1.2.840.113549.1.9.16.3 (OBJ_id_smime_alg) */,
+    193 /* 1.2.840.113549.1.9.16.4 (OBJ_id_smime_cd) */,
+    194 /* 1.2.840.113549.1.9.16.5 (OBJ_id_smime_spq) */,
+    195 /* 1.2.840.113549.1.9.16.6 (OBJ_id_smime_cti) */,
+    158 /* 1.2.840.113549.1.9.22.1 (OBJ_x509Certificate) */,
+    159 /* 1.2.840.113549.1.9.22.2 (OBJ_sdsiCertificate) */,
+    160 /* 1.2.840.113549.1.9.23.1 (OBJ_x509Crl) */,
+    144 /* 1.2.840.113549.1.12.1.1 (OBJ_pbe_WithSHA1And128BitRC4) */,
+    145 /* 1.2.840.113549.1.12.1.2 (OBJ_pbe_WithSHA1And40BitRC4) */,
+    146 /* 1.2.840.113549.1.12.1.3 (OBJ_pbe_WithSHA1And3_Key_TripleDES_CBC) */,
+    147 /* 1.2.840.113549.1.12.1.4 (OBJ_pbe_WithSHA1And2_Key_TripleDES_CBC) */,
+    148 /* 1.2.840.113549.1.12.1.5 (OBJ_pbe_WithSHA1And128BitRC2_CBC) */,
+    149 /* 1.2.840.113549.1.12.1.6 (OBJ_pbe_WithSHA1And40BitRC2_CBC) */,
+    171 /* 1.3.6.1.4.1.311.2.1.14 (OBJ_ms_ext_req) */,
+    134 /* 1.3.6.1.4.1.311.2.1.21 (OBJ_ms_code_ind) */,
+    135 /* 1.3.6.1.4.1.311.2.1.22 (OBJ_ms_code_com) */,
+    136 /* 1.3.6.1.4.1.311.10.3.1 (OBJ_ms_ctl_sign) */,
+    137 /* 1.3.6.1.4.1.311.10.3.3 (OBJ_ms_sgc) */,
+    138 /* 1.3.6.1.4.1.311.10.3.4 (OBJ_ms_efs) */,
+    648 /* 1.3.6.1.4.1.311.20.2.2 (OBJ_ms_smartcard_login) */,
+    649 /* 1.3.6.1.4.1.311.20.2.3 (OBJ_ms_upn) */,
+    751 /* 1.2.392.200011.61.1.1.1.2 (OBJ_camellia_128_cbc) */,
+    752 /* 1.2.392.200011.61.1.1.1.3 (OBJ_camellia_192_cbc) */,
+    753 /* 1.2.392.200011.61.1.1.1.4 (OBJ_camellia_256_cbc) */,
+    907 /* 1.2.392.200011.61.1.1.3.2 (OBJ_id_camellia128_wrap) */,
+    908 /* 1.2.392.200011.61.1.1.3.3 (OBJ_id_camellia192_wrap) */,
+    909 /* 1.2.392.200011.61.1.1.3.4 (OBJ_id_camellia256_wrap) */,
+    196 /* 1.2.840.113549.1.9.16.0.1 (OBJ_id_smime_mod_cms) */,
+    197 /* 1.2.840.113549.1.9.16.0.2 (OBJ_id_smime_mod_ess) */,
+    198 /* 1.2.840.113549.1.9.16.0.3 (OBJ_id_smime_mod_oid) */,
+    199 /* 1.2.840.113549.1.9.16.0.4 (OBJ_id_smime_mod_msg_v3) */,
+    200 /* 1.2.840.113549.1.9.16.0.5 (OBJ_id_smime_mod_ets_eSignature_88) */,
+    201 /* 1.2.840.113549.1.9.16.0.6 (OBJ_id_smime_mod_ets_eSignature_97) */,
+    202 /* 1.2.840.113549.1.9.16.0.7 (OBJ_id_smime_mod_ets_eSigPolicy_88) */,
+    203 /* 1.2.840.113549.1.9.16.0.8 (OBJ_id_smime_mod_ets_eSigPolicy_97) */,
+    204 /* 1.2.840.113549.1.9.16.1.1 (OBJ_id_smime_ct_receipt) */,
+    205 /* 1.2.840.113549.1.9.16.1.2 (OBJ_id_smime_ct_authData) */,
+    206 /* 1.2.840.113549.1.9.16.1.3 (OBJ_id_smime_ct_publishCert) */,
+    207 /* 1.2.840.113549.1.9.16.1.4 (OBJ_id_smime_ct_TSTInfo) */,
+    208 /* 1.2.840.113549.1.9.16.1.5 (OBJ_id_smime_ct_TDTInfo) */,
+    209 /* 1.2.840.113549.1.9.16.1.6 (OBJ_id_smime_ct_contentInfo) */,
+    210 /* 1.2.840.113549.1.9.16.1.7 (OBJ_id_smime_ct_DVCSRequestData) */,
+    211 /* 1.2.840.113549.1.9.16.1.8 (OBJ_id_smime_ct_DVCSResponseData) */,
+    786 /* 1.2.840.113549.1.9.16.1.9 (OBJ_id_smime_ct_compressedData) */,
+    787 /* 1.2.840.113549.1.9.16.1.27 (OBJ_id_ct_asciiTextWithCRLF) */,
+    212 /* 1.2.840.113549.1.9.16.2.1 (OBJ_id_smime_aa_receiptRequest) */,
+    213 /* 1.2.840.113549.1.9.16.2.2 (OBJ_id_smime_aa_securityLabel) */,
+    214 /* 1.2.840.113549.1.9.16.2.3 (OBJ_id_smime_aa_mlExpandHistory) */,
+    215 /* 1.2.840.113549.1.9.16.2.4 (OBJ_id_smime_aa_contentHint) */,
+    216 /* 1.2.840.113549.1.9.16.2.5 (OBJ_id_smime_aa_msgSigDigest) */,
+    217 /* 1.2.840.113549.1.9.16.2.6 (OBJ_id_smime_aa_encapContentType) */,
+    218 /* 1.2.840.113549.1.9.16.2.7 (OBJ_id_smime_aa_contentIdentifier) */,
+    219 /* 1.2.840.113549.1.9.16.2.8 (OBJ_id_smime_aa_macValue) */,
+    220 /* 1.2.840.113549.1.9.16.2.9 (OBJ_id_smime_aa_equivalentLabels) */,
+    221 /* 1.2.840.113549.1.9.16.2.10 (OBJ_id_smime_aa_contentReference) */,
+    222 /* 1.2.840.113549.1.9.16.2.11 (OBJ_id_smime_aa_encrypKeyPref) */,
+    223 /* 1.2.840.113549.1.9.16.2.12 (OBJ_id_smime_aa_signingCertificate) */,
+    224 /* 1.2.840.113549.1.9.16.2.13 (OBJ_id_smime_aa_smimeEncryptCerts) */,
+    225 /* 1.2.840.113549.1.9.16.2.14 (OBJ_id_smime_aa_timeStampToken) */,
+    226 /* 1.2.840.113549.1.9.16.2.15 (OBJ_id_smime_aa_ets_sigPolicyId) */,
+    227 /* 1.2.840.113549.1.9.16.2.16 (OBJ_id_smime_aa_ets_commitmentType) */,
+    228 /* 1.2.840.113549.1.9.16.2.17 (OBJ_id_smime_aa_ets_signerLocation) */,
+    229 /* 1.2.840.113549.1.9.16.2.18 (OBJ_id_smime_aa_ets_signerAttr) */,
+    230 /* 1.2.840.113549.1.9.16.2.19 (OBJ_id_smime_aa_ets_otherSigCert) */,
+    231 /* 1.2.840.113549.1.9.16.2.20 (OBJ_id_smime_aa_ets_contentTimestamp) */,
+    232 /* 1.2.840.113549.1.9.16.2.21 (OBJ_id_smime_aa_ets_CertificateRefs) */,
+    233 /* 1.2.840.113549.1.9.16.2.22 (OBJ_id_smime_aa_ets_RevocationRefs) */,
+    234 /* 1.2.840.113549.1.9.16.2.23 (OBJ_id_smime_aa_ets_certValues) */,
+    235 /* 1.2.840.113549.1.9.16.2.24 (OBJ_id_smime_aa_ets_revocationValues) */,
+    236 /* 1.2.840.113549.1.9.16.2.25 (OBJ_id_smime_aa_ets_escTimeStamp) */,
+    237 /* 1.2.840.113549.1.9.16.2.26 (OBJ_id_smime_aa_ets_certCRLTimestamp) */,
+    238 /* 1.2.840.113549.1.9.16.2.27 (OBJ_id_smime_aa_ets_archiveTimeStamp) */,
+    239 /* 1.2.840.113549.1.9.16.2.28 (OBJ_id_smime_aa_signatureType) */,
+    240 /* 1.2.840.113549.1.9.16.2.29 (OBJ_id_smime_aa_dvcs_dvc) */,
+    241 /* 1.2.840.113549.1.9.16.3.1 (OBJ_id_smime_alg_ESDHwith3DES) */,
+    242 /* 1.2.840.113549.1.9.16.3.2 (OBJ_id_smime_alg_ESDHwithRC2) */,
+    243 /* 1.2.840.113549.1.9.16.3.3 (OBJ_id_smime_alg_3DESwrap) */,
+    244 /* 1.2.840.113549.1.9.16.3.4 (OBJ_id_smime_alg_RC2wrap) */,
+    245 /* 1.2.840.113549.1.9.16.3.5 (OBJ_id_smime_alg_ESDH) */,
+    246 /* 1.2.840.113549.1.9.16.3.6 (OBJ_id_smime_alg_CMS3DESwrap) */,
+    247 /* 1.2.840.113549.1.9.16.3.7 (OBJ_id_smime_alg_CMSRC2wrap) */,
+    125 /* 1.2.840.113549.1.9.16.3.8 (OBJ_zlib_compression) */,
+    893 /* 1.2.840.113549.1.9.16.3.9 (OBJ_id_alg_PWRI_KEK) */,
+    248 /* 1.2.840.113549.1.9.16.4.1 (OBJ_id_smime_cd_ldap) */,
+    249 /* 1.2.840.113549.1.9.16.5.1 (OBJ_id_smime_spq_ets_sqt_uri) */,
+    250 /* 1.2.840.113549.1.9.16.5.2 (OBJ_id_smime_spq_ets_sqt_unotice) */,
+    251 /* 1.2.840.113549.1.9.16.6.1 (OBJ_id_smime_cti_ets_proofOfOrigin) */,
+    252 /* 1.2.840.113549.1.9.16.6.2 (OBJ_id_smime_cti_ets_proofOfReceipt) */,
+    253 /* 1.2.840.113549.1.9.16.6.3 (OBJ_id_smime_cti_ets_proofOfDelivery) */,
+    254 /* 1.2.840.113549.1.9.16.6.4 (OBJ_id_smime_cti_ets_proofOfSender) */,
+    255 /* 1.2.840.113549.1.9.16.6.5 (OBJ_id_smime_cti_ets_proofOfApproval) */,
+    256 /* 1.2.840.113549.1.9.16.6.6 (OBJ_id_smime_cti_ets_proofOfCreation) */,
+    150 /* 1.2.840.113549.1.12.10.1.1 (OBJ_keyBag) */,
+    151 /* 1.2.840.113549.1.12.10.1.2 (OBJ_pkcs8ShroudedKeyBag) */,
+    152 /* 1.2.840.113549.1.12.10.1.3 (OBJ_certBag) */,
+    153 /* 1.2.840.113549.1.12.10.1.4 (OBJ_crlBag) */,
+    154 /* 1.2.840.113549.1.12.10.1.5 (OBJ_secretBag) */,
+    155 /* 1.2.840.113549.1.12.10.1.6 (OBJ_safeContentsBag) */,
+    34 /* 1.3.6.1.4.1.188.7.1.1.2 (OBJ_idea_cbc) */,
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c
new file mode 100644
index 0000000..303a8d9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c	
@@ -0,0 +1,122 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/obj.h>
+
+#include "../internal.h"
+
+
+typedef struct {
+  int sign_nid;
+  int digest_nid;
+  int pkey_nid;
+} nid_triple;
+
+static const nid_triple kTriples[] = {
+    // RSA PKCS#1.
+    {NID_md4WithRSAEncryption, NID_md4, NID_rsaEncryption},
+    {NID_md5WithRSAEncryption, NID_md5, NID_rsaEncryption},
+    {NID_sha1WithRSAEncryption, NID_sha1, NID_rsaEncryption},
+    {NID_sha224WithRSAEncryption, NID_sha224, NID_rsaEncryption},
+    {NID_sha256WithRSAEncryption, NID_sha256, NID_rsaEncryption},
+    {NID_sha384WithRSAEncryption, NID_sha384, NID_rsaEncryption},
+    {NID_sha512WithRSAEncryption, NID_sha512, NID_rsaEncryption},
+    // DSA.
+    {NID_dsaWithSHA1, NID_sha1, NID_dsa},
+    {NID_dsaWithSHA1_2, NID_sha1, NID_dsa_2},
+    {NID_dsa_with_SHA224, NID_sha224, NID_dsa},
+    {NID_dsa_with_SHA256, NID_sha256, NID_dsa},
+    // ECDSA.
+    {NID_ecdsa_with_SHA1, NID_sha1, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA224, NID_sha224, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA256, NID_sha256, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA384, NID_sha384, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA512, NID_sha512, NID_X9_62_id_ecPublicKey},
+    // The following algorithms use more complex (or simpler) parameters. The
+    // digest "undef" indicates the caller should handle this explicitly.
+    {NID_rsassaPss, NID_undef, NID_rsaEncryption},
+    {NID_ED25519, NID_undef, NID_ED25519},
+};
+
+int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid, int *out_pkey_nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTriples); i++) {
+    if (kTriples[i].sign_nid == sign_nid) {
+      if (out_digest_nid != NULL) {
+        *out_digest_nid = kTriples[i].digest_nid;
+      }
+      if (out_pkey_nid != NULL) {
+        *out_pkey_nid = kTriples[i].pkey_nid;
+      }
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid, int pkey_nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTriples); i++) {
+    if (kTriples[i].digest_nid == digest_nid &&
+        kTriples[i].pkey_nid == pkey_nid) {
+      if (out_sign_nid != NULL) {
+        *out_sign_nid = kTriples[i].sign_nid;
+      }
+      return 1;
+    }
+  }
+
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c.grpc_back
new file mode 100644
index 0000000..21bde27
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/obj/obj_xref.c.grpc_back	
@@ -0,0 +1,122 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/obj.h>
+
+#include "../internal.h"
+
+
+typedef struct {
+  int sign_nid;
+  int digest_nid;
+  int pkey_nid;
+} nid_triple;
+
+static const nid_triple kTriples[] = {
+    // RSA PKCS#1.
+    {NID_md4WithRSAEncryption, NID_md4, NID_rsaEncryption},
+    {NID_md5WithRSAEncryption, NID_md5, NID_rsaEncryption},
+    {NID_sha1WithRSAEncryption, NID_sha1, NID_rsaEncryption},
+    {NID_sha224WithRSAEncryption, NID_sha224, NID_rsaEncryption},
+    {NID_sha256WithRSAEncryption, NID_sha256, NID_rsaEncryption},
+    {NID_sha384WithRSAEncryption, NID_sha384, NID_rsaEncryption},
+    {NID_sha512WithRSAEncryption, NID_sha512, NID_rsaEncryption},
+    // DSA.
+    {NID_dsaWithSHA1, NID_sha1, NID_dsa},
+    {NID_dsaWithSHA1_2, NID_sha1, NID_dsa_2},
+    {NID_dsa_with_SHA224, NID_sha224, NID_dsa},
+    {NID_dsa_with_SHA256, NID_sha256, NID_dsa},
+    // ECDSA.
+    {NID_ecdsa_with_SHA1, NID_sha1, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA224, NID_sha224, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA256, NID_sha256, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA384, NID_sha384, NID_X9_62_id_ecPublicKey},
+    {NID_ecdsa_with_SHA512, NID_sha512, NID_X9_62_id_ecPublicKey},
+    // The following algorithms use more complex (or simpler) parameters. The
+    // digest "undef" indicates the caller should handle this explicitly.
+    {NID_rsassaPss, NID_undef, NID_rsaEncryption},
+    {NID_ED25519, NID_undef, NID_ED25519},
+};
+
+int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid, int *out_pkey_nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTriples); i++) {
+    if (kTriples[i].sign_nid == sign_nid) {
+      if (out_digest_nid != NULL) {
+        *out_digest_nid = kTriples[i].digest_nid;
+      }
+      if (out_pkey_nid != NULL) {
+        *out_pkey_nid = kTriples[i].pkey_nid;
+      }
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid, int pkey_nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTriples); i++) {
+    if (kTriples[i].digest_nid == digest_nid &&
+        kTriples[i].pkey_nid == pkey_nid) {
+      if (out_sign_nid != NULL) {
+        *out_sign_nid = kTriples[i].sign_nid;
+      }
+      return 1;
+    }
+  }
+
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c
new file mode 100644
index 0000000..1cb8242
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/dh.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/pkcs7.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/x509.h>
+
+static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa);
+static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa);
+static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey);
+
+IMPLEMENT_PEM_rw(X509_REQ, X509_REQ, PEM_STRING_X509_REQ, X509_REQ)
+
+IMPLEMENT_PEM_write(X509_REQ_NEW, X509_REQ, PEM_STRING_X509_REQ_OLD, X509_REQ)
+IMPLEMENT_PEM_rw(X509_CRL, X509_CRL, PEM_STRING_X509_CRL, X509_CRL)
+IMPLEMENT_PEM_rw(PKCS7, PKCS7, PEM_STRING_PKCS7, PKCS7)
+
+/*
+ * We treat RSA or DSA private keys as a special case. For private keys we
+ * read in an EVP_PKEY structure with PEM_read_bio_PrivateKey() and extract
+ * the relevant private key: this means can handle "traditional" and PKCS#8
+ * formats transparently.
+ */
+static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa)
+{
+    RSA *rtmp;
+    if (!key)
+        return NULL;
+    rtmp = EVP_PKEY_get1_RSA(key);
+    EVP_PKEY_free(key);
+    if (!rtmp)
+        return NULL;
+    if (rsa) {
+        RSA_free(*rsa);
+        *rsa = rtmp;
+    }
+    return rtmp;
+}
+
+RSA *PEM_read_bio_RSAPrivateKey(BIO *bp, RSA **rsa, pem_password_cb *cb,
+                                void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_rsa(pktmp, rsa);
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+RSA *PEM_read_RSAPrivateKey(FILE *fp, RSA **rsa, pem_password_cb *cb, void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_rsa(pktmp, rsa);
+}
+
+#endif
+
+IMPLEMENT_PEM_write_cb_const(RSAPrivateKey, RSA, PEM_STRING_RSA,
+                             RSAPrivateKey)
+
+
+IMPLEMENT_PEM_rw_const(RSAPublicKey, RSA, PEM_STRING_RSA_PUBLIC,
+                       RSAPublicKey) IMPLEMENT_PEM_rw(RSA_PUBKEY, RSA,
+                                                      PEM_STRING_PUBLIC,
+                                                      RSA_PUBKEY)
+#ifndef OPENSSL_NO_DSA
+static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa)
+{
+    DSA *dtmp;
+    if (!key)
+        return NULL;
+    dtmp = EVP_PKEY_get1_DSA(key);
+    EVP_PKEY_free(key);
+    if (!dtmp)
+        return NULL;
+    if (dsa) {
+        DSA_free(*dsa);
+        *dsa = dtmp;
+    }
+    return dtmp;
+}
+
+DSA *PEM_read_bio_DSAPrivateKey(BIO *bp, DSA **dsa, pem_password_cb *cb,
+                                void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
+}
+
+IMPLEMENT_PEM_write_cb_const(DSAPrivateKey, DSA, PEM_STRING_DSA,
+                             DSAPrivateKey)
+
+    IMPLEMENT_PEM_rw(DSA_PUBKEY, DSA, PEM_STRING_PUBLIC, DSA_PUBKEY)
+# ifndef OPENSSL_NO_FP_API
+DSA *PEM_read_DSAPrivateKey(FILE *fp, DSA **dsa, pem_password_cb *cb, void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
+}
+
+# endif
+
+IMPLEMENT_PEM_rw_const(DSAparams, DSA, PEM_STRING_DSAPARAMS, DSAparams)
+#endif
+static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey)
+{
+    EC_KEY *dtmp;
+    if (!key)
+        return NULL;
+    dtmp = EVP_PKEY_get1_EC_KEY(key);
+    EVP_PKEY_free(key);
+    if (!dtmp)
+        return NULL;
+    if (eckey) {
+        EC_KEY_free(*eckey);
+        *eckey = dtmp;
+    }
+    return dtmp;
+}
+
+EC_KEY *PEM_read_bio_ECPrivateKey(BIO *bp, EC_KEY **key, pem_password_cb *cb,
+                                  void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_eckey(pktmp, key); /* will free pktmp */
+}
+
+IMPLEMENT_PEM_write_cb(ECPrivateKey, EC_KEY, PEM_STRING_ECPRIVATEKEY,
+                       ECPrivateKey)
+
+    IMPLEMENT_PEM_rw(EC_PUBKEY, EC_KEY, PEM_STRING_PUBLIC, EC_PUBKEY)
+#ifndef OPENSSL_NO_FP_API
+EC_KEY *PEM_read_ECPrivateKey(FILE *fp, EC_KEY **eckey, pem_password_cb *cb,
+                              void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_eckey(pktmp, eckey); /* will free pktmp */
+}
+
+#endif
+
+IMPLEMENT_PEM_write_const(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
+
+    IMPLEMENT_PEM_rw(PUBKEY, EVP_PKEY, PEM_STRING_PUBLIC, PUBKEY)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c.grpc_back
new file mode 100644
index 0000000..6b40883
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_all.c.grpc_back	
@@ -0,0 +1,261 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/bio.h>
+#include <openssl/dh.h>
+#include <openssl/dsa.h>
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+#include <openssl/pkcs7.h>
+#include <openssl/rsa.h>
+#include <openssl/x509.h>
+
+static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa);
+static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa);
+static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey);
+
+IMPLEMENT_PEM_rw(X509_REQ, X509_REQ, PEM_STRING_X509_REQ, X509_REQ)
+
+IMPLEMENT_PEM_write(X509_REQ_NEW, X509_REQ, PEM_STRING_X509_REQ_OLD, X509_REQ)
+IMPLEMENT_PEM_rw(X509_CRL, X509_CRL, PEM_STRING_X509_CRL, X509_CRL)
+IMPLEMENT_PEM_rw(PKCS7, PKCS7, PEM_STRING_PKCS7, PKCS7)
+
+/*
+ * We treat RSA or DSA private keys as a special case. For private keys we
+ * read in an EVP_PKEY structure with PEM_read_bio_PrivateKey() and extract
+ * the relevant private key: this means can handle "traditional" and PKCS#8
+ * formats transparently.
+ */
+static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa)
+{
+    RSA *rtmp;
+    if (!key)
+        return NULL;
+    rtmp = EVP_PKEY_get1_RSA(key);
+    EVP_PKEY_free(key);
+    if (!rtmp)
+        return NULL;
+    if (rsa) {
+        RSA_free(*rsa);
+        *rsa = rtmp;
+    }
+    return rtmp;
+}
+
+RSA *PEM_read_bio_RSAPrivateKey(BIO *bp, RSA **rsa, pem_password_cb *cb,
+                                void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_rsa(pktmp, rsa);
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+RSA *PEM_read_RSAPrivateKey(FILE *fp, RSA **rsa, pem_password_cb *cb, void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_rsa(pktmp, rsa);
+}
+
+#endif
+
+IMPLEMENT_PEM_write_cb_const(RSAPrivateKey, RSA, PEM_STRING_RSA,
+                             RSAPrivateKey)
+
+
+IMPLEMENT_PEM_rw_const(RSAPublicKey, RSA, PEM_STRING_RSA_PUBLIC,
+                       RSAPublicKey) IMPLEMENT_PEM_rw(RSA_PUBKEY, RSA,
+                                                      PEM_STRING_PUBLIC,
+                                                      RSA_PUBKEY)
+#ifndef OPENSSL_NO_DSA
+static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa)
+{
+    DSA *dtmp;
+    if (!key)
+        return NULL;
+    dtmp = EVP_PKEY_get1_DSA(key);
+    EVP_PKEY_free(key);
+    if (!dtmp)
+        return NULL;
+    if (dsa) {
+        DSA_free(*dsa);
+        *dsa = dtmp;
+    }
+    return dtmp;
+}
+
+DSA *PEM_read_bio_DSAPrivateKey(BIO *bp, DSA **dsa, pem_password_cb *cb,
+                                void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
+}
+
+IMPLEMENT_PEM_write_cb_const(DSAPrivateKey, DSA, PEM_STRING_DSA,
+                             DSAPrivateKey)
+
+    IMPLEMENT_PEM_rw(DSA_PUBKEY, DSA, PEM_STRING_PUBLIC, DSA_PUBKEY)
+# ifndef OPENSSL_NO_FP_API
+DSA *PEM_read_DSAPrivateKey(FILE *fp, DSA **dsa, pem_password_cb *cb, void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
+}
+
+# endif
+
+IMPLEMENT_PEM_rw_const(DSAparams, DSA, PEM_STRING_DSAPARAMS, DSAparams)
+#endif
+static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey)
+{
+    EC_KEY *dtmp;
+    if (!key)
+        return NULL;
+    dtmp = EVP_PKEY_get1_EC_KEY(key);
+    EVP_PKEY_free(key);
+    if (!dtmp)
+        return NULL;
+    if (eckey) {
+        EC_KEY_free(*eckey);
+        *eckey = dtmp;
+    }
+    return dtmp;
+}
+
+EC_KEY *PEM_read_bio_ECPrivateKey(BIO *bp, EC_KEY **key, pem_password_cb *cb,
+                                  void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
+    return pkey_get_eckey(pktmp, key); /* will free pktmp */
+}
+
+IMPLEMENT_PEM_write_cb(ECPrivateKey, EC_KEY, PEM_STRING_ECPRIVATEKEY,
+                       ECPrivateKey)
+
+    IMPLEMENT_PEM_rw(EC_PUBKEY, EC_KEY, PEM_STRING_PUBLIC, EC_PUBKEY)
+#ifndef OPENSSL_NO_FP_API
+EC_KEY *PEM_read_ECPrivateKey(FILE *fp, EC_KEY **eckey, pem_password_cb *cb,
+                              void *u)
+{
+    EVP_PKEY *pktmp;
+    pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
+    return pkey_get_eckey(pktmp, eckey); /* will free pktmp */
+}
+
+#endif
+
+IMPLEMENT_PEM_write_const(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
+
+    IMPLEMENT_PEM_rw(PUBKEY, EVP_PKEY, PEM_STRING_PUBLIC, PUBKEY)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c
new file mode 100644
index 0000000..394044a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c	
@@ -0,0 +1,360 @@
+/* crypto/pem/pem_info.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <openssl_grpc/pem.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/x509.h>
+
+#ifndef OPENSSL_NO_FP_API
+STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
+                                        pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    STACK_OF(X509_INFO) *ret = PEM_X509_INFO_read_bio(b, sk, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+enum parse_result_t {
+    parse_ok,
+    parse_error,
+    parse_new_entry,
+};
+
+static enum parse_result_t parse_x509(X509_INFO *info, const uint8_t *data,
+                                      size_t len, int key_type)
+{
+    if (info->x509 != NULL) {
+        return parse_new_entry;
+    }
+    info->x509 = d2i_X509(NULL, &data, len);
+    return info->x509 != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_x509_aux(X509_INFO *info, const uint8_t *data,
+                                          size_t len, int key_type)
+{
+    if (info->x509 != NULL) {
+        return parse_new_entry;
+    }
+    info->x509 = d2i_X509_AUX(NULL, &data, len);
+    return info->x509 != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_crl(X509_INFO *info, const uint8_t *data,
+                                     size_t len, int key_type)
+{
+    if (info->crl != NULL) {
+        return parse_new_entry;
+    }
+    info->crl = d2i_X509_CRL(NULL, &data, len);
+    return info->crl != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_key(X509_INFO *info, const uint8_t *data,
+                                     size_t len, int key_type)
+{
+    if (info->x_pkey != NULL) {
+        return parse_new_entry;
+    }
+    info->x_pkey = X509_PKEY_new();
+    if (info->x_pkey == NULL) {
+        return parse_error;
+    }
+    info->x_pkey->dec_pkey = d2i_PrivateKey(key_type, NULL, &data, len);
+    return info->x_pkey->dec_pkey != NULL ? parse_ok : parse_error;
+}
+
+STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk,
+                                            pem_password_cb *cb, void *u)
+{
+    X509_INFO *info = NULL;
+    char *name = NULL, *header = NULL;
+    unsigned char *data = NULL;
+    long len;
+    int ok = 0;
+    STACK_OF(X509_INFO) *ret = NULL;
+
+    if (sk == NULL) {
+        ret = sk_X509_INFO_new_null();
+        if (ret == NULL) {
+            OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    } else {
+        ret = sk;
+    }
+    size_t orig_num = sk_X509_INFO_num(ret);
+
+    info = X509_INFO_new();
+    if (info == NULL) {
+        goto err;
+    }
+
+    for (;;) {
+        if (!PEM_read_bio(bp, &name, &header, &data, &len)) {
+            uint32_t error = ERR_peek_last_error();
+            if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                ERR_GET_REASON(error) == PEM_R_NO_START_LINE) {
+                ERR_clear_error();
+                break;
+            }
+            goto err;
+        }
+
+        enum parse_result_t (*parse_function)(X509_INFO *, const uint8_t *,
+                                              size_t, int) = NULL;
+        int key_type = EVP_PKEY_NONE;
+        if (strcmp(name, PEM_STRING_X509) == 0 ||
+            strcmp(name, PEM_STRING_X509_OLD) == 0) {
+            parse_function = parse_x509;
+        } else if (strcmp(name, PEM_STRING_X509_TRUSTED) == 0) {
+            parse_function = parse_x509_aux;
+        } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) {
+            parse_function = parse_crl;
+        } else if (strcmp(name, PEM_STRING_RSA) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_RSA;
+        } else if (strcmp(name, PEM_STRING_DSA) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_DSA;
+        } else if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_EC;
+        }
+
+        /* If a private key has a header, assume it is encrypted. */
+        if (key_type != EVP_PKEY_NONE && strlen(header) > 10) {
+            if (info->x_pkey != NULL) {
+                if (!sk_X509_INFO_push(ret, info)) {
+                    goto err;
+                }
+                info = X509_INFO_new();
+                if (info == NULL) {
+                    goto err;
+                }
+            }
+            /* Historically, raw entries pushed an empty key. */
+            info->x_pkey = X509_PKEY_new();
+            if (info->x_pkey == NULL ||
+                !PEM_get_EVP_CIPHER_INFO(header, &info->enc_cipher)) {
+                goto err;
+            }
+            info->enc_data = (char *)data;
+            info->enc_len = (int)len;
+            data = NULL;
+        } else if (parse_function != NULL) {
+            EVP_CIPHER_INFO cipher;
+            if (!PEM_get_EVP_CIPHER_INFO(header, &cipher) ||
+                !PEM_do_header(&cipher, data, &len, cb, u)) {
+                goto err;
+            }
+            enum parse_result_t result =
+                parse_function(info, data, len, key_type);
+            if (result == parse_new_entry) {
+                if (!sk_X509_INFO_push(ret, info)) {
+                    goto err;
+                }
+                info = X509_INFO_new();
+                if (info == NULL) {
+                    goto err;
+                }
+                result = parse_function(info, data, len, key_type);
+            }
+            if (result != parse_ok) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+                goto err;
+            }
+        }
+        OPENSSL_free(name);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
+        name = NULL;
+        header = NULL;
+        data = NULL;
+    }
+
+    /* Push the last entry on the stack if not empty. */
+    if (info->x509 != NULL || info->crl != NULL ||
+        info->x_pkey != NULL || info->enc_data != NULL) {
+        if (!sk_X509_INFO_push(ret, info)) {
+            goto err;
+        }
+        info = NULL;
+    }
+
+    ok = 1;
+
+ err:
+    X509_INFO_free(info);
+    if (!ok) {
+        while (sk_X509_INFO_num(ret) > orig_num) {
+            X509_INFO_free(sk_X509_INFO_pop(ret));
+        }
+        if (ret != sk) {
+            sk_X509_INFO_free(ret);
+        }
+        ret = NULL;
+    }
+
+    OPENSSL_free(name);
+    OPENSSL_free(header);
+    OPENSSL_free(data);
+    return ret;
+}
+
+/* A TJH addition */
+int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
+                            unsigned char *kstr, int klen,
+                            pem_password_cb *cb, void *u)
+{
+    int i, ret = 0;
+    unsigned char *data = NULL;
+    const char *objstr = NULL;
+    char buf[PEM_BUFSIZE];
+    unsigned char *iv = NULL;
+    unsigned iv_len = 0;
+
+    if (enc != NULL) {
+        iv_len = EVP_CIPHER_iv_length(enc);
+        objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
+        if (objstr == NULL) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+            goto err;
+        }
+    }
+
+    /*
+     * now for the fun part ... if we have a private key then we have to be
+     * able to handle a not-yet-decrypted key being written out correctly ...
+     * if it is decrypted or it is non-encrypted then we use the base code
+     */
+    if (xi->x_pkey != NULL) {
+        if ((xi->enc_data != NULL) && (xi->enc_len > 0)) {
+            if (enc == NULL) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_CIPHER_IS_NULL);
+                goto err;
+            }
+
+            /* copy from weirdo names into more normal things */
+            iv = xi->enc_cipher.iv;
+            data = (unsigned char *)xi->enc_data;
+            i = xi->enc_len;
+
+            /*
+             * we take the encryption data from the internal stuff rather
+             * than what the user has passed us ... as we have to match
+             * exactly for some strange reason
+             */
+            objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher));
+            if (objstr == NULL) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+                goto err;
+            }
+
+            /* create the right magic header stuff */
+            assert(strlen(objstr) + 23 + 2 * iv_len + 13 <= sizeof buf);
+            buf[0] = '\0';
+            PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+            PEM_dek_info(buf, objstr, iv_len, (char *)iv);
+
+            /* use the normal code to write things out */
+            i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
+            if (i <= 0)
+                goto err;
+        } else {
+            /* Add DSA/DH */
+            /* normal optionally encrypted stuff */
+            if (PEM_write_bio_RSAPrivateKey(bp,
+                                            xi->x_pkey->dec_pkey->pkey.rsa,
+                                            enc, kstr, klen, cb, u) <= 0)
+                goto err;
+        }
+    }
+
+    /* if we have a certificate then write it out now */
+    if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
+        goto err;
+
+    /*
+     * we are ignoring anything else that is loaded into the X509_INFO
+     * structure for the moment ... as I don't need it so I'm not coding it
+     * here and Eric can do it when this makes it into the base library --tjh
+     */
+
+    ret = 1;
+
+err:
+  OPENSSL_cleanse(buf, PEM_BUFSIZE);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c.grpc_back
new file mode 100644
index 0000000..1cda35b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_info.c.grpc_back	
@@ -0,0 +1,360 @@
+/* crypto/pem/pem_info.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <openssl/pem.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/dsa.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/rsa.h>
+#include <openssl/x509.h>
+
+#ifndef OPENSSL_NO_FP_API
+STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
+                                        pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    STACK_OF(X509_INFO) *ret = PEM_X509_INFO_read_bio(b, sk, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+enum parse_result_t {
+    parse_ok,
+    parse_error,
+    parse_new_entry,
+};
+
+static enum parse_result_t parse_x509(X509_INFO *info, const uint8_t *data,
+                                      size_t len, int key_type)
+{
+    if (info->x509 != NULL) {
+        return parse_new_entry;
+    }
+    info->x509 = d2i_X509(NULL, &data, len);
+    return info->x509 != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_x509_aux(X509_INFO *info, const uint8_t *data,
+                                          size_t len, int key_type)
+{
+    if (info->x509 != NULL) {
+        return parse_new_entry;
+    }
+    info->x509 = d2i_X509_AUX(NULL, &data, len);
+    return info->x509 != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_crl(X509_INFO *info, const uint8_t *data,
+                                     size_t len, int key_type)
+{
+    if (info->crl != NULL) {
+        return parse_new_entry;
+    }
+    info->crl = d2i_X509_CRL(NULL, &data, len);
+    return info->crl != NULL ? parse_ok : parse_error;
+}
+
+static enum parse_result_t parse_key(X509_INFO *info, const uint8_t *data,
+                                     size_t len, int key_type)
+{
+    if (info->x_pkey != NULL) {
+        return parse_new_entry;
+    }
+    info->x_pkey = X509_PKEY_new();
+    if (info->x_pkey == NULL) {
+        return parse_error;
+    }
+    info->x_pkey->dec_pkey = d2i_PrivateKey(key_type, NULL, &data, len);
+    return info->x_pkey->dec_pkey != NULL ? parse_ok : parse_error;
+}
+
+STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk,
+                                            pem_password_cb *cb, void *u)
+{
+    X509_INFO *info = NULL;
+    char *name = NULL, *header = NULL;
+    unsigned char *data = NULL;
+    long len;
+    int ok = 0;
+    STACK_OF(X509_INFO) *ret = NULL;
+
+    if (sk == NULL) {
+        ret = sk_X509_INFO_new_null();
+        if (ret == NULL) {
+            OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    } else {
+        ret = sk;
+    }
+    size_t orig_num = sk_X509_INFO_num(ret);
+
+    info = X509_INFO_new();
+    if (info == NULL) {
+        goto err;
+    }
+
+    for (;;) {
+        if (!PEM_read_bio(bp, &name, &header, &data, &len)) {
+            uint32_t error = ERR_peek_last_error();
+            if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                ERR_GET_REASON(error) == PEM_R_NO_START_LINE) {
+                ERR_clear_error();
+                break;
+            }
+            goto err;
+        }
+
+        enum parse_result_t (*parse_function)(X509_INFO *, const uint8_t *,
+                                              size_t, int) = NULL;
+        int key_type = EVP_PKEY_NONE;
+        if (strcmp(name, PEM_STRING_X509) == 0 ||
+            strcmp(name, PEM_STRING_X509_OLD) == 0) {
+            parse_function = parse_x509;
+        } else if (strcmp(name, PEM_STRING_X509_TRUSTED) == 0) {
+            parse_function = parse_x509_aux;
+        } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) {
+            parse_function = parse_crl;
+        } else if (strcmp(name, PEM_STRING_RSA) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_RSA;
+        } else if (strcmp(name, PEM_STRING_DSA) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_DSA;
+        } else if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) {
+            parse_function = parse_key;
+            key_type = EVP_PKEY_EC;
+        }
+
+        /* If a private key has a header, assume it is encrypted. */
+        if (key_type != EVP_PKEY_NONE && strlen(header) > 10) {
+            if (info->x_pkey != NULL) {
+                if (!sk_X509_INFO_push(ret, info)) {
+                    goto err;
+                }
+                info = X509_INFO_new();
+                if (info == NULL) {
+                    goto err;
+                }
+            }
+            /* Historically, raw entries pushed an empty key. */
+            info->x_pkey = X509_PKEY_new();
+            if (info->x_pkey == NULL ||
+                !PEM_get_EVP_CIPHER_INFO(header, &info->enc_cipher)) {
+                goto err;
+            }
+            info->enc_data = (char *)data;
+            info->enc_len = (int)len;
+            data = NULL;
+        } else if (parse_function != NULL) {
+            EVP_CIPHER_INFO cipher;
+            if (!PEM_get_EVP_CIPHER_INFO(header, &cipher) ||
+                !PEM_do_header(&cipher, data, &len, cb, u)) {
+                goto err;
+            }
+            enum parse_result_t result =
+                parse_function(info, data, len, key_type);
+            if (result == parse_new_entry) {
+                if (!sk_X509_INFO_push(ret, info)) {
+                    goto err;
+                }
+                info = X509_INFO_new();
+                if (info == NULL) {
+                    goto err;
+                }
+                result = parse_function(info, data, len, key_type);
+            }
+            if (result != parse_ok) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+                goto err;
+            }
+        }
+        OPENSSL_free(name);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
+        name = NULL;
+        header = NULL;
+        data = NULL;
+    }
+
+    /* Push the last entry on the stack if not empty. */
+    if (info->x509 != NULL || info->crl != NULL ||
+        info->x_pkey != NULL || info->enc_data != NULL) {
+        if (!sk_X509_INFO_push(ret, info)) {
+            goto err;
+        }
+        info = NULL;
+    }
+
+    ok = 1;
+
+ err:
+    X509_INFO_free(info);
+    if (!ok) {
+        while (sk_X509_INFO_num(ret) > orig_num) {
+            X509_INFO_free(sk_X509_INFO_pop(ret));
+        }
+        if (ret != sk) {
+            sk_X509_INFO_free(ret);
+        }
+        ret = NULL;
+    }
+
+    OPENSSL_free(name);
+    OPENSSL_free(header);
+    OPENSSL_free(data);
+    return ret;
+}
+
+/* A TJH addition */
+int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
+                            unsigned char *kstr, int klen,
+                            pem_password_cb *cb, void *u)
+{
+    int i, ret = 0;
+    unsigned char *data = NULL;
+    const char *objstr = NULL;
+    char buf[PEM_BUFSIZE];
+    unsigned char *iv = NULL;
+    unsigned iv_len = 0;
+
+    if (enc != NULL) {
+        iv_len = EVP_CIPHER_iv_length(enc);
+        objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
+        if (objstr == NULL) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+            goto err;
+        }
+    }
+
+    /*
+     * now for the fun part ... if we have a private key then we have to be
+     * able to handle a not-yet-decrypted key being written out correctly ...
+     * if it is decrypted or it is non-encrypted then we use the base code
+     */
+    if (xi->x_pkey != NULL) {
+        if ((xi->enc_data != NULL) && (xi->enc_len > 0)) {
+            if (enc == NULL) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_CIPHER_IS_NULL);
+                goto err;
+            }
+
+            /* copy from weirdo names into more normal things */
+            iv = xi->enc_cipher.iv;
+            data = (unsigned char *)xi->enc_data;
+            i = xi->enc_len;
+
+            /*
+             * we take the encryption data from the internal stuff rather
+             * than what the user has passed us ... as we have to match
+             * exactly for some strange reason
+             */
+            objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher));
+            if (objstr == NULL) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+                goto err;
+            }
+
+            /* create the right magic header stuff */
+            assert(strlen(objstr) + 23 + 2 * iv_len + 13 <= sizeof buf);
+            buf[0] = '\0';
+            PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+            PEM_dek_info(buf, objstr, iv_len, (char *)iv);
+
+            /* use the normal code to write things out */
+            i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
+            if (i <= 0)
+                goto err;
+        } else {
+            /* Add DSA/DH */
+            /* normal optionally encrypted stuff */
+            if (PEM_write_bio_RSAPrivateKey(bp,
+                                            xi->x_pkey->dec_pkey->pkey.rsa,
+                                            enc, kstr, klen, cb, u) <= 0)
+                goto err;
+        }
+    }
+
+    /* if we have a certificate then write it out now */
+    if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
+        goto err;
+
+    /*
+     * we are ignoring anything else that is loaded into the X509_INFO
+     * structure for the moment ... as I don't need it so I'm not coding it
+     * here and Eric can do it when this makes it into the base library --tjh
+     */
+
+    ret = 1;
+
+err:
+  OPENSSL_cleanse(buf, PEM_BUFSIZE);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c
new file mode 100644
index 0000000..7414611
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c	
@@ -0,0 +1,777 @@
+/* crypto/pem/pem_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/base64.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/des.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+#include "../internal.h"
+
+
+#define MIN_LENGTH      4
+
+static int load_iv(char **fromp, unsigned char *to, int num);
+static int check_pem(const char *nm, const char *name);
+
+void PEM_proc_type(char *buf, int type)
+{
+    const char *str;
+
+    if (type == PEM_TYPE_ENCRYPTED)
+        str = "ENCRYPTED";
+    else if (type == PEM_TYPE_MIC_CLEAR)
+        str = "MIC-CLEAR";
+    else if (type == PEM_TYPE_MIC_ONLY)
+        str = "MIC-ONLY";
+    else
+        str = "BAD-TYPE";
+
+    OPENSSL_strlcat(buf, "Proc-Type: 4,", PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, str, PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, "\n", PEM_BUFSIZE);
+}
+
+void PEM_dek_info(char *buf, const char *type, int len, char *str)
+{
+    static const unsigned char map[17] = "0123456789ABCDEF";
+    long i;
+    int j;
+
+    OPENSSL_strlcat(buf, "DEK-Info: ", PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, type, PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, ",", PEM_BUFSIZE);
+    j = strlen(buf);
+    if (j + (len * 2) + 1 > PEM_BUFSIZE)
+        return;
+    for (i = 0; i < len; i++) {
+        buf[j + i * 2] = map[(str[i] >> 4) & 0x0f];
+        buf[j + i * 2 + 1] = map[(str[i]) & 0x0f];
+    }
+    buf[j + i * 2] = '\n';
+    buf[j + i * 2 + 1] = '\0';
+}
+
+#ifndef OPENSSL_NO_FP_API
+void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
+                    pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    void *ret = PEM_ASN1_read_bio(d2i, name, b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+static int check_pem(const char *nm, const char *name)
+{
+    /* Normal matching nm and name */
+    if (!strcmp(nm, name))
+        return 1;
+
+    /* Make PEM_STRING_EVP_PKEY match any private key */
+
+    if (!strcmp(name, PEM_STRING_EVP_PKEY)) {
+        return !strcmp(nm, PEM_STRING_PKCS8) ||
+               !strcmp(nm, PEM_STRING_PKCS8INF) ||
+               !strcmp(nm, PEM_STRING_RSA) ||
+               !strcmp(nm, PEM_STRING_EC) ||
+               !strcmp(nm, PEM_STRING_DSA);
+    }
+
+    /* Permit older strings */
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) && !strcmp(name, PEM_STRING_X509))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_REQ_OLD) &&
+        !strcmp(name, PEM_STRING_X509_REQ))
+        return 1;
+
+    /* Allow normal certs to be read as trusted certs */
+    if (!strcmp(nm, PEM_STRING_X509) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    /* Some CAs use PKCS#7 with CERTIFICATE headers */
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_PKCS7_SIGNED) &&
+        !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+#ifndef OPENSSL_NO_CMS
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+    /* Allow CMS to be read from PKCS#7 headers */
+    if (!strcmp(nm, PEM_STRING_PKCS7) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+#endif
+
+    return 0;
+}
+
+static const EVP_CIPHER *cipher_by_name(const char *name)
+{
+    /* This is similar to the (deprecated) function |EVP_get_cipherbyname|. Note
+     * the PEM code assumes that ciphers have at least 8 bytes of IV, at most 20
+     * bytes of overhead and generally behave like CBC mode. */
+    if (0 == strcmp(name, SN_des_cbc)) {
+        return EVP_des_cbc();
+    } else if (0 == strcmp(name, SN_des_ede3_cbc)) {
+        return EVP_des_ede3_cbc();
+    } else if (0 == strcmp(name, SN_aes_128_cbc)) {
+        return EVP_aes_128_cbc();
+    } else if (0 == strcmp(name, SN_aes_192_cbc)) {
+        return EVP_aes_192_cbc();
+    } else if (0 == strcmp(name, SN_aes_256_cbc)) {
+        return EVP_aes_256_cbc();
+    } else {
+        return NULL;
+    }
+}
+
+int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm,
+                       const char *name, BIO *bp, pem_password_cb *cb,
+                       void *u)
+{
+    EVP_CIPHER_INFO cipher;
+    char *nm = NULL, *header = NULL;
+    unsigned char *data = NULL;
+    long len;
+    int ret = 0;
+
+    for (;;) {
+        if (!PEM_read_bio(bp, &nm, &header, &data, &len)) {
+            uint32_t error = ERR_peek_error();
+            if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                ERR_GET_REASON(error) == PEM_R_NO_START_LINE) {
+                ERR_add_error_data(2, "Expecting: ", name);
+            }
+            return 0;
+        }
+        if (check_pem(nm, name))
+            break;
+        OPENSSL_free(nm);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
+    }
+    if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
+        goto err;
+    if (!PEM_do_header(&cipher, data, &len, cb, u))
+        goto err;
+
+    *pdata = data;
+    *plen = len;
+
+    if (pnm)
+        *pnm = nm;
+
+    ret = 1;
+
+ err:
+    if (!ret || !pnm)
+        OPENSSL_free(nm);
+    OPENSSL_free(header);
+    if (!ret)
+        OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
+                   void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                   int klen, pem_password_cb *callback, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_ASN1_write_bio(i2d, name, b, x, enc, kstr, klen, callback, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
+                       void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                       int klen, pem_password_cb *callback, void *u)
+{
+    EVP_CIPHER_CTX ctx;
+    int dsize = 0, i, j, ret = 0;
+    unsigned char *p, *data = NULL;
+    const char *objstr = NULL;
+    char buf[PEM_BUFSIZE];
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    unsigned char iv[EVP_MAX_IV_LENGTH];
+
+    if (enc != NULL) {
+        objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
+        if (objstr == NULL ||
+            cipher_by_name(objstr) == NULL ||
+            EVP_CIPHER_iv_length(enc) < 8) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+            goto err;
+        }
+    }
+
+    if ((dsize = i2d(x, NULL)) < 0) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+        dsize = 0;
+        goto err;
+    }
+    /* dzise + 8 bytes are needed */
+    /* actually it needs the cipher block size extra... */
+    data = (unsigned char *)OPENSSL_malloc((unsigned int)dsize + 20);
+    if (data == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    p = data;
+    i = i2d(x, &p);
+
+    if (enc != NULL) {
+        const unsigned iv_len = EVP_CIPHER_iv_length(enc);
+
+        if (kstr == NULL) {
+            klen = 0;
+            if (!callback)
+                callback = PEM_def_callback;
+            klen = (*callback) (buf, PEM_BUFSIZE, 1, u);
+            if (klen <= 0) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_READ_KEY);
+                goto err;
+            }
+            kstr = (unsigned char *)buf;
+        }
+        assert(iv_len <= (int)sizeof(iv));
+        if (!RAND_bytes(iv, iv_len)) /* Generate a salt */
+            goto err;
+        /*
+         * The 'iv' is used as the iv and as a salt.  It is NOT taken from
+         * the BytesToKey function
+         */
+        if (!EVP_BytesToKey(enc, EVP_md5(), iv, kstr, klen, 1, key, NULL))
+            goto err;
+
+        if (kstr == (unsigned char *)buf)
+            OPENSSL_cleanse(buf, PEM_BUFSIZE);
+
+        assert(strlen(objstr) + 23 + 2 * iv_len + 13 <= sizeof buf);
+
+        buf[0] = '\0';
+        PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+        PEM_dek_info(buf, objstr, iv_len, (char *)iv);
+        /* k=strlen(buf); */
+
+        EVP_CIPHER_CTX_init(&ctx);
+        ret = 1;
+        if (!EVP_EncryptInit_ex(&ctx, enc, NULL, key, iv)
+            || !EVP_EncryptUpdate(&ctx, data, &j, data, i)
+            || !EVP_EncryptFinal_ex(&ctx, &(data[j]), &i))
+            ret = 0;
+        else
+            i += j;
+        EVP_CIPHER_CTX_cleanup(&ctx);
+        if (ret == 0)
+            goto err;
+    } else {
+        ret = 1;
+        buf[0] = '\0';
+    }
+    i = PEM_write_bio(bp, name, buf, data, i);
+    if (i <= 0)
+        ret = 0;
+ err:
+    OPENSSL_cleanse(key, sizeof(key));
+    OPENSSL_cleanse(iv, sizeof(iv));
+    OPENSSL_cleanse((char *)&ctx, sizeof(ctx));
+    OPENSSL_cleanse(buf, PEM_BUFSIZE);
+    OPENSSL_free(data);
+    return (ret);
+}
+
+int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
+                  pem_password_cb *callback, void *u)
+{
+    int i = 0, j, o, klen;
+    long len;
+    EVP_CIPHER_CTX ctx;
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    char buf[PEM_BUFSIZE];
+
+    len = *plen;
+
+    if (cipher->cipher == NULL)
+        return (1);
+
+    klen = 0;
+    if (!callback)
+        callback = PEM_def_callback;
+    klen = callback(buf, PEM_BUFSIZE, 0, u);
+    if (klen <= 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+        return (0);
+    }
+
+    if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]),
+                        (unsigned char *)buf, klen, 1, key, NULL))
+        return 0;
+
+    j = (int)len;
+    EVP_CIPHER_CTX_init(&ctx);
+    o = EVP_DecryptInit_ex(&ctx, cipher->cipher, NULL, key, &(cipher->iv[0]));
+    if (o)
+        o = EVP_DecryptUpdate(&ctx, data, &i, data, j);
+    if (o)
+        o = EVP_DecryptFinal_ex(&ctx, &(data[i]), &j);
+    EVP_CIPHER_CTX_cleanup(&ctx);
+    OPENSSL_cleanse((char *)buf, sizeof(buf));
+    OPENSSL_cleanse((char *)key, sizeof(key));
+    if (!o) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_DECRYPT);
+        return (0);
+    }
+    j += i;
+    *plen = j;
+    return (1);
+}
+
+int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
+{
+    const EVP_CIPHER *enc = NULL;
+    char *p, c;
+    char **header_pp = &header;
+
+    cipher->cipher = NULL;
+    OPENSSL_memset(cipher->iv, 0, sizeof(cipher->iv));
+    if ((header == NULL) || (*header == '\0') || (*header == '\n'))
+        return (1);
+    if (strncmp(header, "Proc-Type: ", 11) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_PROC_TYPE);
+        return (0);
+    }
+    header += 11;
+    if (*header != '4')
+        return (0);
+    header++;
+    if (*header != ',')
+        return (0);
+    header++;
+    if (strncmp(header, "ENCRYPTED", 9) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_ENCRYPTED);
+        return (0);
+    }
+    for (; (*header != '\n') && (*header != '\0'); header++) ;
+    if (*header == '\0') {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_SHORT_HEADER);
+        return (0);
+    }
+    header++;
+    if (strncmp(header, "DEK-Info: ", 10) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_DEK_INFO);
+        return (0);
+    }
+    header += 10;
+
+    p = header;
+    for (;;) {
+        c = *header;
+        if (!(((c >= 'A') && (c <= 'Z')) || (c == '-') ||
+              ((c >= '0') && (c <= '9'))))
+            break;
+        header++;
+    }
+    *header = '\0';
+    cipher->cipher = enc = cipher_by_name(p);
+    *header = c;
+    header++;
+
+    if (enc == NULL) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_ENCRYPTION);
+        return (0);
+    }
+    // The IV parameter must be at least 8 bytes long to be used as the salt in
+    // the KDF. (This should not happen given |cipher_by_name|.)
+    if (EVP_CIPHER_iv_length(enc) < 8) {
+        assert(0);
+        OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_ENCRYPTION);
+        return 0;
+    }
+    if (!load_iv(header_pp, &(cipher->iv[0]), EVP_CIPHER_iv_length(enc)))
+        return (0);
+
+    return (1);
+}
+
+static int load_iv(char **fromp, unsigned char *to, int num)
+{
+    int v, i;
+    char *from;
+
+    from = *fromp;
+    for (i = 0; i < num; i++)
+        to[i] = 0;
+    num *= 2;
+    for (i = 0; i < num; i++) {
+        if ((*from >= '0') && (*from <= '9'))
+            v = *from - '0';
+        else if ((*from >= 'A') && (*from <= 'F'))
+            v = *from - 'A' + 10;
+        else if ((*from >= 'a') && (*from <= 'f'))
+            v = *from - 'a' + 10;
+        else {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_IV_CHARS);
+            return (0);
+        }
+        from++;
+        to[i / 2] |= v << (long)((!(i & 1)) * 4);
+    }
+
+    *fromp = from;
+    return (1);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_write(FILE *fp, const char *name, const char *header,
+              const unsigned char *data, long len)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_write_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_write_bio(BIO *bp, const char *name, const char *header,
+                  const unsigned char *data, long len)
+{
+    int nlen, n, i, j, outl;
+    unsigned char *buf = NULL;
+    EVP_ENCODE_CTX ctx;
+    int reason = ERR_R_BUF_LIB;
+
+    EVP_EncodeInit(&ctx);
+    nlen = strlen(name);
+
+    if ((BIO_write(bp, "-----BEGIN ", 11) != 11) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+
+    i = strlen(header);
+    if (i > 0) {
+        if ((BIO_write(bp, header, i) != i) || (BIO_write(bp, "\n", 1) != 1))
+            goto err;
+    }
+
+    buf = OPENSSL_malloc(PEM_BUFSIZE * 8);
+    if (buf == NULL) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+    }
+
+    i = j = 0;
+    while (len > 0) {
+        n = (int)((len > (PEM_BUFSIZE * 5)) ? (PEM_BUFSIZE * 5) : len);
+        EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n);
+        if ((outl) && (BIO_write(bp, (char *)buf, outl) != outl))
+            goto err;
+        i += outl;
+        len -= n;
+        j += n;
+    }
+    EVP_EncodeFinal(&ctx, buf, &outl);
+    if ((outl > 0) && (BIO_write(bp, (char *)buf, outl) != outl))
+        goto err;
+    OPENSSL_free(buf);
+    buf = NULL;
+    if ((BIO_write(bp, "-----END ", 9) != 9) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+    return (i + outl);
+ err:
+    if (buf) {
+        OPENSSL_free(buf);
+    }
+    OPENSSL_PUT_ERROR(PEM, reason);
+    return (0);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
+             long *len)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_read_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
+                 long *len)
+{
+    EVP_ENCODE_CTX ctx;
+    int end = 0, i, k, bl = 0, hl = 0, nohead = 0;
+    char buf[256];
+    BUF_MEM *nameB;
+    BUF_MEM *headerB;
+    BUF_MEM *dataB, *tmpB;
+
+    nameB = BUF_MEM_new();
+    headerB = BUF_MEM_new();
+    dataB = BUF_MEM_new();
+    if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) {
+        BUF_MEM_free(nameB);
+        BUF_MEM_free(headerB);
+        BUF_MEM_free(dataB);
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+
+    buf[254] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+
+        if (i <= 0) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_NO_START_LINE);
+            goto err;
+        }
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (strncmp(buf, "-----BEGIN ", 11) == 0) {
+            i = strlen(&(buf[11]));
+
+            if (strncmp(&(buf[11 + i - 6]), "-----\n", 6) != 0)
+                continue;
+            if (!BUF_MEM_grow(nameB, i + 9)) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            OPENSSL_memcpy(nameB->data, &(buf[11]), i - 6);
+            nameB->data[i - 6] = '\0';
+            break;
+        }
+    }
+    hl = 0;
+    if (!BUF_MEM_grow(headerB, 256)) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    headerB->data[0] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+        if (i <= 0)
+            break;
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (buf[0] == '\n')
+            break;
+        if (!BUF_MEM_grow(headerB, hl + i + 9)) {
+            OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        if (strncmp(buf, "-----END ", 9) == 0) {
+            nohead = 1;
+            break;
+        }
+        OPENSSL_memcpy(&(headerB->data[hl]), buf, i);
+        headerB->data[hl + i] = '\0';
+        hl += i;
+    }
+
+    bl = 0;
+    if (!BUF_MEM_grow(dataB, 1024)) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    dataB->data[0] = '\0';
+    if (!nohead) {
+        for (;;) {
+            i = BIO_gets(bp, buf, 254);
+            if (i <= 0)
+                break;
+
+            while ((i >= 0) && (buf[i] <= ' '))
+                i--;
+            buf[++i] = '\n';
+            buf[++i] = '\0';
+
+            if (i != 65)
+                end = 1;
+            if (strncmp(buf, "-----END ", 9) == 0)
+                break;
+            if (i > 65)
+                break;
+            if (!BUF_MEM_grow_clean(dataB, i + bl + 9)) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            OPENSSL_memcpy(&(dataB->data[bl]), buf, i);
+            dataB->data[bl + i] = '\0';
+            bl += i;
+            if (end) {
+                buf[0] = '\0';
+                i = BIO_gets(bp, buf, 254);
+                if (i <= 0)
+                    break;
+
+                while ((i >= 0) && (buf[i] <= ' '))
+                    i--;
+                buf[++i] = '\n';
+                buf[++i] = '\0';
+
+                break;
+            }
+        }
+    } else {
+        tmpB = headerB;
+        headerB = dataB;
+        dataB = tmpB;
+        bl = hl;
+    }
+    i = strlen(nameB->data);
+    if ((strncmp(buf, "-----END ", 9) != 0) ||
+        (strncmp(nameB->data, &(buf[9]), i) != 0) ||
+        (strncmp(&(buf[9 + i]), "-----\n", 6) != 0)) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_END_LINE);
+        goto err;
+    }
+
+    EVP_DecodeInit(&ctx);
+    i = EVP_DecodeUpdate(&ctx,
+                         (unsigned char *)dataB->data, &bl,
+                         (unsigned char *)dataB->data, bl);
+    if (i < 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    i = EVP_DecodeFinal(&ctx, (unsigned char *)&(dataB->data[bl]), &k);
+    if (i < 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    bl += k;
+
+    if (bl == 0)
+        goto err;
+    *name = nameB->data;
+    *header = headerB->data;
+    *data = (unsigned char *)dataB->data;
+    *len = bl;
+    OPENSSL_free(nameB);
+    OPENSSL_free(headerB);
+    OPENSSL_free(dataB);
+    return (1);
+ err:
+    BUF_MEM_free(nameB);
+    BUF_MEM_free(headerB);
+    BUF_MEM_free(dataB);
+    return (0);
+}
+
+int PEM_def_callback(char *buf, int size, int rwflag, void *userdata)
+{
+    if (!buf || !userdata || size < 0) {
+        return 0;
+    }
+    size_t len = strlen((char *)userdata);
+    if (len >= (size_t)size) {
+        return 0;
+    }
+    OPENSSL_strlcpy(buf, userdata, (size_t)size);
+    return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c.grpc_back
new file mode 100644
index 0000000..00c0e0a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_lib.c.grpc_back	
@@ -0,0 +1,777 @@
+/* crypto/pem/pem_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/base64.h>
+#include <openssl/buf.h>
+#include <openssl/des.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pem.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+#include "../internal.h"
+
+
+#define MIN_LENGTH      4
+
+static int load_iv(char **fromp, unsigned char *to, int num);
+static int check_pem(const char *nm, const char *name);
+
+void PEM_proc_type(char *buf, int type)
+{
+    const char *str;
+
+    if (type == PEM_TYPE_ENCRYPTED)
+        str = "ENCRYPTED";
+    else if (type == PEM_TYPE_MIC_CLEAR)
+        str = "MIC-CLEAR";
+    else if (type == PEM_TYPE_MIC_ONLY)
+        str = "MIC-ONLY";
+    else
+        str = "BAD-TYPE";
+
+    OPENSSL_strlcat(buf, "Proc-Type: 4,", PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, str, PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, "\n", PEM_BUFSIZE);
+}
+
+void PEM_dek_info(char *buf, const char *type, int len, char *str)
+{
+    static const unsigned char map[17] = "0123456789ABCDEF";
+    long i;
+    int j;
+
+    OPENSSL_strlcat(buf, "DEK-Info: ", PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, type, PEM_BUFSIZE);
+    OPENSSL_strlcat(buf, ",", PEM_BUFSIZE);
+    j = strlen(buf);
+    if (j + (len * 2) + 1 > PEM_BUFSIZE)
+        return;
+    for (i = 0; i < len; i++) {
+        buf[j + i * 2] = map[(str[i] >> 4) & 0x0f];
+        buf[j + i * 2 + 1] = map[(str[i]) & 0x0f];
+    }
+    buf[j + i * 2] = '\n';
+    buf[j + i * 2 + 1] = '\0';
+}
+
+#ifndef OPENSSL_NO_FP_API
+void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
+                    pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    void *ret = PEM_ASN1_read_bio(d2i, name, b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+static int check_pem(const char *nm, const char *name)
+{
+    /* Normal matching nm and name */
+    if (!strcmp(nm, name))
+        return 1;
+
+    /* Make PEM_STRING_EVP_PKEY match any private key */
+
+    if (!strcmp(name, PEM_STRING_EVP_PKEY)) {
+        return !strcmp(nm, PEM_STRING_PKCS8) ||
+               !strcmp(nm, PEM_STRING_PKCS8INF) ||
+               !strcmp(nm, PEM_STRING_RSA) ||
+               !strcmp(nm, PEM_STRING_EC) ||
+               !strcmp(nm, PEM_STRING_DSA);
+    }
+
+    /* Permit older strings */
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) && !strcmp(name, PEM_STRING_X509))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_REQ_OLD) &&
+        !strcmp(name, PEM_STRING_X509_REQ))
+        return 1;
+
+    /* Allow normal certs to be read as trusted certs */
+    if (!strcmp(nm, PEM_STRING_X509) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_X509_OLD) &&
+        !strcmp(name, PEM_STRING_X509_TRUSTED))
+        return 1;
+
+    /* Some CAs use PKCS#7 with CERTIFICATE headers */
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+    if (!strcmp(nm, PEM_STRING_PKCS7_SIGNED) &&
+        !strcmp(name, PEM_STRING_PKCS7))
+        return 1;
+
+#ifndef OPENSSL_NO_CMS
+    if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+    /* Allow CMS to be read from PKCS#7 headers */
+    if (!strcmp(nm, PEM_STRING_PKCS7) && !strcmp(name, PEM_STRING_CMS))
+        return 1;
+#endif
+
+    return 0;
+}
+
+static const EVP_CIPHER *cipher_by_name(const char *name)
+{
+    /* This is similar to the (deprecated) function |EVP_get_cipherbyname|. Note
+     * the PEM code assumes that ciphers have at least 8 bytes of IV, at most 20
+     * bytes of overhead and generally behave like CBC mode. */
+    if (0 == strcmp(name, SN_des_cbc)) {
+        return EVP_des_cbc();
+    } else if (0 == strcmp(name, SN_des_ede3_cbc)) {
+        return EVP_des_ede3_cbc();
+    } else if (0 == strcmp(name, SN_aes_128_cbc)) {
+        return EVP_aes_128_cbc();
+    } else if (0 == strcmp(name, SN_aes_192_cbc)) {
+        return EVP_aes_192_cbc();
+    } else if (0 == strcmp(name, SN_aes_256_cbc)) {
+        return EVP_aes_256_cbc();
+    } else {
+        return NULL;
+    }
+}
+
+int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm,
+                       const char *name, BIO *bp, pem_password_cb *cb,
+                       void *u)
+{
+    EVP_CIPHER_INFO cipher;
+    char *nm = NULL, *header = NULL;
+    unsigned char *data = NULL;
+    long len;
+    int ret = 0;
+
+    for (;;) {
+        if (!PEM_read_bio(bp, &nm, &header, &data, &len)) {
+            uint32_t error = ERR_peek_error();
+            if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                ERR_GET_REASON(error) == PEM_R_NO_START_LINE) {
+                ERR_add_error_data(2, "Expecting: ", name);
+            }
+            return 0;
+        }
+        if (check_pem(nm, name))
+            break;
+        OPENSSL_free(nm);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
+    }
+    if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
+        goto err;
+    if (!PEM_do_header(&cipher, data, &len, cb, u))
+        goto err;
+
+    *pdata = data;
+    *plen = len;
+
+    if (pnm)
+        *pnm = nm;
+
+    ret = 1;
+
+ err:
+    if (!ret || !pnm)
+        OPENSSL_free(nm);
+    OPENSSL_free(header);
+    if (!ret)
+        OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
+                   void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                   int klen, pem_password_cb *callback, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_ASN1_write_bio(i2d, name, b, x, enc, kstr, klen, callback, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
+                       void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+                       int klen, pem_password_cb *callback, void *u)
+{
+    EVP_CIPHER_CTX ctx;
+    int dsize = 0, i, j, ret = 0;
+    unsigned char *p, *data = NULL;
+    const char *objstr = NULL;
+    char buf[PEM_BUFSIZE];
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    unsigned char iv[EVP_MAX_IV_LENGTH];
+
+    if (enc != NULL) {
+        objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
+        if (objstr == NULL ||
+            cipher_by_name(objstr) == NULL ||
+            EVP_CIPHER_iv_length(enc) < 8) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER);
+            goto err;
+        }
+    }
+
+    if ((dsize = i2d(x, NULL)) < 0) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+        dsize = 0;
+        goto err;
+    }
+    /* dzise + 8 bytes are needed */
+    /* actually it needs the cipher block size extra... */
+    data = (unsigned char *)OPENSSL_malloc((unsigned int)dsize + 20);
+    if (data == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    p = data;
+    i = i2d(x, &p);
+
+    if (enc != NULL) {
+        const unsigned iv_len = EVP_CIPHER_iv_length(enc);
+
+        if (kstr == NULL) {
+            klen = 0;
+            if (!callback)
+                callback = PEM_def_callback;
+            klen = (*callback) (buf, PEM_BUFSIZE, 1, u);
+            if (klen <= 0) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_READ_KEY);
+                goto err;
+            }
+            kstr = (unsigned char *)buf;
+        }
+        assert(iv_len <= (int)sizeof(iv));
+        if (!RAND_bytes(iv, iv_len)) /* Generate a salt */
+            goto err;
+        /*
+         * The 'iv' is used as the iv and as a salt.  It is NOT taken from
+         * the BytesToKey function
+         */
+        if (!EVP_BytesToKey(enc, EVP_md5(), iv, kstr, klen, 1, key, NULL))
+            goto err;
+
+        if (kstr == (unsigned char *)buf)
+            OPENSSL_cleanse(buf, PEM_BUFSIZE);
+
+        assert(strlen(objstr) + 23 + 2 * iv_len + 13 <= sizeof buf);
+
+        buf[0] = '\0';
+        PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+        PEM_dek_info(buf, objstr, iv_len, (char *)iv);
+        /* k=strlen(buf); */
+
+        EVP_CIPHER_CTX_init(&ctx);
+        ret = 1;
+        if (!EVP_EncryptInit_ex(&ctx, enc, NULL, key, iv)
+            || !EVP_EncryptUpdate(&ctx, data, &j, data, i)
+            || !EVP_EncryptFinal_ex(&ctx, &(data[j]), &i))
+            ret = 0;
+        else
+            i += j;
+        EVP_CIPHER_CTX_cleanup(&ctx);
+        if (ret == 0)
+            goto err;
+    } else {
+        ret = 1;
+        buf[0] = '\0';
+    }
+    i = PEM_write_bio(bp, name, buf, data, i);
+    if (i <= 0)
+        ret = 0;
+ err:
+    OPENSSL_cleanse(key, sizeof(key));
+    OPENSSL_cleanse(iv, sizeof(iv));
+    OPENSSL_cleanse((char *)&ctx, sizeof(ctx));
+    OPENSSL_cleanse(buf, PEM_BUFSIZE);
+    OPENSSL_free(data);
+    return (ret);
+}
+
+int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
+                  pem_password_cb *callback, void *u)
+{
+    int i = 0, j, o, klen;
+    long len;
+    EVP_CIPHER_CTX ctx;
+    unsigned char key[EVP_MAX_KEY_LENGTH];
+    char buf[PEM_BUFSIZE];
+
+    len = *plen;
+
+    if (cipher->cipher == NULL)
+        return (1);
+
+    klen = 0;
+    if (!callback)
+        callback = PEM_def_callback;
+    klen = callback(buf, PEM_BUFSIZE, 0, u);
+    if (klen <= 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+        return (0);
+    }
+
+    if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]),
+                        (unsigned char *)buf, klen, 1, key, NULL))
+        return 0;
+
+    j = (int)len;
+    EVP_CIPHER_CTX_init(&ctx);
+    o = EVP_DecryptInit_ex(&ctx, cipher->cipher, NULL, key, &(cipher->iv[0]));
+    if (o)
+        o = EVP_DecryptUpdate(&ctx, data, &i, data, j);
+    if (o)
+        o = EVP_DecryptFinal_ex(&ctx, &(data[i]), &j);
+    EVP_CIPHER_CTX_cleanup(&ctx);
+    OPENSSL_cleanse((char *)buf, sizeof(buf));
+    OPENSSL_cleanse((char *)key, sizeof(key));
+    if (!o) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_DECRYPT);
+        return (0);
+    }
+    j += i;
+    *plen = j;
+    return (1);
+}
+
+int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
+{
+    const EVP_CIPHER *enc = NULL;
+    char *p, c;
+    char **header_pp = &header;
+
+    cipher->cipher = NULL;
+    OPENSSL_memset(cipher->iv, 0, sizeof(cipher->iv));
+    if ((header == NULL) || (*header == '\0') || (*header == '\n'))
+        return (1);
+    if (strncmp(header, "Proc-Type: ", 11) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_PROC_TYPE);
+        return (0);
+    }
+    header += 11;
+    if (*header != '4')
+        return (0);
+    header++;
+    if (*header != ',')
+        return (0);
+    header++;
+    if (strncmp(header, "ENCRYPTED", 9) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_ENCRYPTED);
+        return (0);
+    }
+    for (; (*header != '\n') && (*header != '\0'); header++) ;
+    if (*header == '\0') {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_SHORT_HEADER);
+        return (0);
+    }
+    header++;
+    if (strncmp(header, "DEK-Info: ", 10) != 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_NOT_DEK_INFO);
+        return (0);
+    }
+    header += 10;
+
+    p = header;
+    for (;;) {
+        c = *header;
+        if (!(((c >= 'A') && (c <= 'Z')) || (c == '-') ||
+              ((c >= '0') && (c <= '9'))))
+            break;
+        header++;
+    }
+    *header = '\0';
+    cipher->cipher = enc = cipher_by_name(p);
+    *header = c;
+    header++;
+
+    if (enc == NULL) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_ENCRYPTION);
+        return (0);
+    }
+    // The IV parameter must be at least 8 bytes long to be used as the salt in
+    // the KDF. (This should not happen given |cipher_by_name|.)
+    if (EVP_CIPHER_iv_length(enc) < 8) {
+        assert(0);
+        OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_ENCRYPTION);
+        return 0;
+    }
+    if (!load_iv(header_pp, &(cipher->iv[0]), EVP_CIPHER_iv_length(enc)))
+        return (0);
+
+    return (1);
+}
+
+static int load_iv(char **fromp, unsigned char *to, int num)
+{
+    int v, i;
+    char *from;
+
+    from = *fromp;
+    for (i = 0; i < num; i++)
+        to[i] = 0;
+    num *= 2;
+    for (i = 0; i < num; i++) {
+        if ((*from >= '0') && (*from <= '9'))
+            v = *from - '0';
+        else if ((*from >= 'A') && (*from <= 'F'))
+            v = *from - 'A' + 10;
+        else if ((*from >= 'a') && (*from <= 'f'))
+            v = *from - 'a' + 10;
+        else {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_IV_CHARS);
+            return (0);
+        }
+        from++;
+        to[i / 2] |= v << (long)((!(i & 1)) * 4);
+    }
+
+    *fromp = from;
+    return (1);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_write(FILE *fp, const char *name, const char *header,
+              const unsigned char *data, long len)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_write_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_write_bio(BIO *bp, const char *name, const char *header,
+                  const unsigned char *data, long len)
+{
+    int nlen, n, i, j, outl;
+    unsigned char *buf = NULL;
+    EVP_ENCODE_CTX ctx;
+    int reason = ERR_R_BUF_LIB;
+
+    EVP_EncodeInit(&ctx);
+    nlen = strlen(name);
+
+    if ((BIO_write(bp, "-----BEGIN ", 11) != 11) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+
+    i = strlen(header);
+    if (i > 0) {
+        if ((BIO_write(bp, header, i) != i) || (BIO_write(bp, "\n", 1) != 1))
+            goto err;
+    }
+
+    buf = OPENSSL_malloc(PEM_BUFSIZE * 8);
+    if (buf == NULL) {
+        reason = ERR_R_MALLOC_FAILURE;
+        goto err;
+    }
+
+    i = j = 0;
+    while (len > 0) {
+        n = (int)((len > (PEM_BUFSIZE * 5)) ? (PEM_BUFSIZE * 5) : len);
+        EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n);
+        if ((outl) && (BIO_write(bp, (char *)buf, outl) != outl))
+            goto err;
+        i += outl;
+        len -= n;
+        j += n;
+    }
+    EVP_EncodeFinal(&ctx, buf, &outl);
+    if ((outl > 0) && (BIO_write(bp, (char *)buf, outl) != outl))
+        goto err;
+    OPENSSL_free(buf);
+    buf = NULL;
+    if ((BIO_write(bp, "-----END ", 9) != 9) ||
+        (BIO_write(bp, name, nlen) != nlen) ||
+        (BIO_write(bp, "-----\n", 6) != 6))
+        goto err;
+    return (i + outl);
+ err:
+    if (buf) {
+        OPENSSL_free(buf);
+    }
+    OPENSSL_PUT_ERROR(PEM, reason);
+    return (0);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
+             long *len)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_read_bio(b, name, header, data, len);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
+                 long *len)
+{
+    EVP_ENCODE_CTX ctx;
+    int end = 0, i, k, bl = 0, hl = 0, nohead = 0;
+    char buf[256];
+    BUF_MEM *nameB;
+    BUF_MEM *headerB;
+    BUF_MEM *dataB, *tmpB;
+
+    nameB = BUF_MEM_new();
+    headerB = BUF_MEM_new();
+    dataB = BUF_MEM_new();
+    if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) {
+        BUF_MEM_free(nameB);
+        BUF_MEM_free(headerB);
+        BUF_MEM_free(dataB);
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+
+    buf[254] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+
+        if (i <= 0) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_NO_START_LINE);
+            goto err;
+        }
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (strncmp(buf, "-----BEGIN ", 11) == 0) {
+            i = strlen(&(buf[11]));
+
+            if (strncmp(&(buf[11 + i - 6]), "-----\n", 6) != 0)
+                continue;
+            if (!BUF_MEM_grow(nameB, i + 9)) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            OPENSSL_memcpy(nameB->data, &(buf[11]), i - 6);
+            nameB->data[i - 6] = '\0';
+            break;
+        }
+    }
+    hl = 0;
+    if (!BUF_MEM_grow(headerB, 256)) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    headerB->data[0] = '\0';
+    for (;;) {
+        i = BIO_gets(bp, buf, 254);
+        if (i <= 0)
+            break;
+
+        while ((i >= 0) && (buf[i] <= ' '))
+            i--;
+        buf[++i] = '\n';
+        buf[++i] = '\0';
+
+        if (buf[0] == '\n')
+            break;
+        if (!BUF_MEM_grow(headerB, hl + i + 9)) {
+            OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        if (strncmp(buf, "-----END ", 9) == 0) {
+            nohead = 1;
+            break;
+        }
+        OPENSSL_memcpy(&(headerB->data[hl]), buf, i);
+        headerB->data[hl + i] = '\0';
+        hl += i;
+    }
+
+    bl = 0;
+    if (!BUF_MEM_grow(dataB, 1024)) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    dataB->data[0] = '\0';
+    if (!nohead) {
+        for (;;) {
+            i = BIO_gets(bp, buf, 254);
+            if (i <= 0)
+                break;
+
+            while ((i >= 0) && (buf[i] <= ' '))
+                i--;
+            buf[++i] = '\n';
+            buf[++i] = '\0';
+
+            if (i != 65)
+                end = 1;
+            if (strncmp(buf, "-----END ", 9) == 0)
+                break;
+            if (i > 65)
+                break;
+            if (!BUF_MEM_grow_clean(dataB, i + bl + 9)) {
+                OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            OPENSSL_memcpy(&(dataB->data[bl]), buf, i);
+            dataB->data[bl + i] = '\0';
+            bl += i;
+            if (end) {
+                buf[0] = '\0';
+                i = BIO_gets(bp, buf, 254);
+                if (i <= 0)
+                    break;
+
+                while ((i >= 0) && (buf[i] <= ' '))
+                    i--;
+                buf[++i] = '\n';
+                buf[++i] = '\0';
+
+                break;
+            }
+        }
+    } else {
+        tmpB = headerB;
+        headerB = dataB;
+        dataB = tmpB;
+        bl = hl;
+    }
+    i = strlen(nameB->data);
+    if ((strncmp(buf, "-----END ", 9) != 0) ||
+        (strncmp(nameB->data, &(buf[9]), i) != 0) ||
+        (strncmp(&(buf[9 + i]), "-----\n", 6) != 0)) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_END_LINE);
+        goto err;
+    }
+
+    EVP_DecodeInit(&ctx);
+    i = EVP_DecodeUpdate(&ctx,
+                         (unsigned char *)dataB->data, &bl,
+                         (unsigned char *)dataB->data, bl);
+    if (i < 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    i = EVP_DecodeFinal(&ctx, (unsigned char *)&(dataB->data[bl]), &k);
+    if (i < 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_BASE64_DECODE);
+        goto err;
+    }
+    bl += k;
+
+    if (bl == 0)
+        goto err;
+    *name = nameB->data;
+    *header = headerB->data;
+    *data = (unsigned char *)dataB->data;
+    *len = bl;
+    OPENSSL_free(nameB);
+    OPENSSL_free(headerB);
+    OPENSSL_free(dataB);
+    return (1);
+ err:
+    BUF_MEM_free(nameB);
+    BUF_MEM_free(headerB);
+    BUF_MEM_free(dataB);
+    return (0);
+}
+
+int PEM_def_callback(char *buf, int size, int rwflag, void *userdata)
+{
+    if (!buf || !userdata || size < 0) {
+        return 0;
+    }
+    size_t len = strlen((char *)userdata);
+    if (len >= (size_t)size) {
+        return 0;
+    }
+    OPENSSL_strlcpy(buf, userdata, (size_t)size);
+    return len;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c
new file mode 100644
index 0000000..d9df9c1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c	
@@ -0,0 +1,87 @@
+/* crypto/pem/pem_oth.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/pem.h>
+
+#include <stdio.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+/* Handle 'other' PEMs: not private keys */
+
+void *PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp, void **x,
+                        pem_password_cb *cb, void *u)
+{
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    char *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, NULL, name, bp, cb, u))
+        return NULL;
+    p = data;
+    ret = d2i(x, &p, len);
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+    OPENSSL_free(data);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c.grpc_back
new file mode 100644
index 0000000..797f822
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_oth.c.grpc_back	
@@ -0,0 +1,87 @@
+/* crypto/pem/pem_oth.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/pem.h>
+
+#include <stdio.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+/* Handle 'other' PEMs: not private keys */
+
+void *PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp, void **x,
+                        pem_password_cb *cb, void *u)
+{
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    char *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, NULL, name, bp, cb, u))
+        return NULL;
+    p = data;
+    ret = d2i(x, &p, len);
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+    OPENSSL_free(data);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c
new file mode 100644
index 0000000..507b8e1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c	
@@ -0,0 +1,257 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/pem.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pkcs8.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
+                      int nid, const EVP_CIPHER *enc,
+                      char *kstr, int klen, pem_password_cb *cb, void *u);
+static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
+                         int nid, const EVP_CIPHER *enc,
+                         char *kstr, int klen, pem_password_cb *cb, void *u);
+
+/*
+ * These functions write a private key in PKCS#8 format: it is a "drop in"
+ * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
+ * is NULL then it uses the unencrypted private key form. The 'nid' versions
+ * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
+ */
+
+int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
+                                      char *kstr, int klen,
+                                      pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                                  char *kstr, int klen,
+                                  pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                            char *kstr, int klen,
+                            pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
+                                char *kstr, int klen,
+                                pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
+}
+
+static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
+                      const EVP_CIPHER *enc, char *kstr, int klen,
+                      pem_password_cb *cb, void *u)
+{
+    X509_SIG *p8;
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    char buf[PEM_BUFSIZE];
+    int ret;
+    if (!(p8inf = EVP_PKEY2PKCS8(x))) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
+        return 0;
+    }
+    if (enc || (nid != -1)) {
+        if (!kstr) {
+            klen = 0;
+            if (!cb)
+                cb = PEM_def_callback;
+            klen = cb(buf, PEM_BUFSIZE, 1, u);
+            if (klen <= 0) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_READ_KEY);
+                PKCS8_PRIV_KEY_INFO_free(p8inf);
+                return 0;
+            }
+
+            kstr = buf;
+        }
+        p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
+        if (kstr == buf)
+            OPENSSL_cleanse(buf, klen);
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+        if (isder)
+            ret = i2d_PKCS8_bio(bp, p8);
+        else
+            ret = PEM_write_bio_PKCS8(bp, p8);
+        X509_SIG_free(p8);
+        return ret;
+    } else {
+        if (isder)
+            ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
+        else
+            ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+        return ret;
+    }
+}
+
+EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
+                                  void *u)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf = NULL;
+    X509_SIG *p8 = NULL;
+    int klen;
+    EVP_PKEY *ret;
+    char psbuf[PEM_BUFSIZE];
+    p8 = d2i_PKCS8_bio(bp, NULL);
+    if (!p8)
+        return NULL;
+
+    klen = 0;
+    if (!cb)
+        cb = PEM_def_callback;
+    klen = cb(psbuf, PEM_BUFSIZE, 0, u);
+    if (klen <= 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+        X509_SIG_free(p8);
+        return NULL;
+    }
+    p8inf = PKCS8_decrypt(p8, psbuf, klen);
+    X509_SIG_free(p8);
+    OPENSSL_cleanse(psbuf, klen);
+    if (!p8inf)
+        return NULL;
+    ret = EVP_PKCS82PKEY(p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    if (!ret)
+        return NULL;
+    if (x) {
+        if (*x)
+            EVP_PKEY_free(*x);
+        *x = ret;
+    }
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                           char *kstr, int klen, pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
+                               char *kstr, int klen,
+                               pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
+                                  char *kstr, int klen,
+                                  pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                              char *kstr, int klen, pem_password_cb *cb,
+                              void *u)
+{
+    return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
+}
+
+static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid,
+                         const EVP_CIPHER *enc, char *kstr, int klen,
+                         pem_password_cb *cb, void *u)
+{
+    BIO *bp;
+    int ret;
+    if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return (0);
+    }
+    ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
+    BIO_free(bp);
+    return ret;
+}
+
+EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
+                                 void *u)
+{
+    BIO *bp;
+    EVP_PKEY *ret;
+    if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
+    BIO_free(bp);
+    return ret;
+}
+
+#endif
+
+IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
+
+
+IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
+             PKCS8_PRIV_KEY_INFO)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c.grpc_back
new file mode 100644
index 0000000..819a329
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pk8.c.grpc_back	
@@ -0,0 +1,257 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/pem.h>
+
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pkcs8.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
+                      int nid, const EVP_CIPHER *enc,
+                      char *kstr, int klen, pem_password_cb *cb, void *u);
+static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
+                         int nid, const EVP_CIPHER *enc,
+                         char *kstr, int klen, pem_password_cb *cb, void *u);
+
+/*
+ * These functions write a private key in PKCS#8 format: it is a "drop in"
+ * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
+ * is NULL then it uses the unencrypted private key form. The 'nid' versions
+ * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
+ */
+
+int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
+                                      char *kstr, int klen,
+                                      pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                                  char *kstr, int klen,
+                                  pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                            char *kstr, int klen,
+                            pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
+                                char *kstr, int klen,
+                                pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
+}
+
+static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
+                      const EVP_CIPHER *enc, char *kstr, int klen,
+                      pem_password_cb *cb, void *u)
+{
+    X509_SIG *p8;
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    char buf[PEM_BUFSIZE];
+    int ret;
+    if (!(p8inf = EVP_PKEY2PKCS8(x))) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
+        return 0;
+    }
+    if (enc || (nid != -1)) {
+        if (!kstr) {
+            klen = 0;
+            if (!cb)
+                cb = PEM_def_callback;
+            klen = cb(buf, PEM_BUFSIZE, 1, u);
+            if (klen <= 0) {
+                OPENSSL_PUT_ERROR(PEM, PEM_R_READ_KEY);
+                PKCS8_PRIV_KEY_INFO_free(p8inf);
+                return 0;
+            }
+
+            kstr = buf;
+        }
+        p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
+        if (kstr == buf)
+            OPENSSL_cleanse(buf, klen);
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+        if (isder)
+            ret = i2d_PKCS8_bio(bp, p8);
+        else
+            ret = PEM_write_bio_PKCS8(bp, p8);
+        X509_SIG_free(p8);
+        return ret;
+    } else {
+        if (isder)
+            ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
+        else
+            ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+        return ret;
+    }
+}
+
+EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
+                                  void *u)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf = NULL;
+    X509_SIG *p8 = NULL;
+    int klen;
+    EVP_PKEY *ret;
+    char psbuf[PEM_BUFSIZE];
+    p8 = d2i_PKCS8_bio(bp, NULL);
+    if (!p8)
+        return NULL;
+
+    klen = 0;
+    if (!cb)
+        cb = PEM_def_callback;
+    klen = cb(psbuf, PEM_BUFSIZE, 0, u);
+    if (klen <= 0) {
+        OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+        X509_SIG_free(p8);
+        return NULL;
+    }
+    p8inf = PKCS8_decrypt(p8, psbuf, klen);
+    X509_SIG_free(p8);
+    OPENSSL_cleanse(psbuf, klen);
+    if (!p8inf)
+        return NULL;
+    ret = EVP_PKCS82PKEY(p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    if (!ret)
+        return NULL;
+    if (x) {
+        if (*x)
+            EVP_PKEY_free(*x);
+        *x = ret;
+    }
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                           char *kstr, int klen, pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
+}
+
+int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
+                               char *kstr, int klen,
+                               pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
+                                  char *kstr, int klen,
+                                  pem_password_cb *cb, void *u)
+{
+    return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
+}
+
+int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                              char *kstr, int klen, pem_password_cb *cb,
+                              void *u)
+{
+    return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
+}
+
+static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid,
+                         const EVP_CIPHER *enc, char *kstr, int klen,
+                         pem_password_cb *cb, void *u)
+{
+    BIO *bp;
+    int ret;
+    if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return (0);
+    }
+    ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
+    BIO_free(bp);
+    return ret;
+}
+
+EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
+                                 void *u)
+{
+    BIO *bp;
+    EVP_PKEY *ret;
+    if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
+    BIO_free(bp);
+    return ret;
+}
+
+#endif
+
+IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
+
+
+IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
+             PKCS8_PRIV_KEY_INFO)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c
new file mode 100644
index 0000000..a7160a6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c	
@@ -0,0 +1,218 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/pem.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/dh.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pkcs8.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
+                                  void *u)
+{
+    char *nm = NULL;
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    EVP_PKEY *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
+        return NULL;
+    p = data;
+
+    if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
+        PKCS8_PRIV_KEY_INFO *p8inf;
+        p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
+        if (!p8inf)
+            goto p8err;
+        ret = EVP_PKCS82PKEY(p8inf);
+        if (x) {
+            if (*x)
+                EVP_PKEY_free((EVP_PKEY *)*x);
+            *x = ret;
+        }
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+    } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
+        PKCS8_PRIV_KEY_INFO *p8inf;
+        X509_SIG *p8;
+        int klen;
+        char psbuf[PEM_BUFSIZE];
+        p8 = d2i_X509_SIG(NULL, &p, len);
+        if (!p8)
+            goto p8err;
+
+        klen = 0;
+        if (!cb)
+            cb = PEM_def_callback;
+        klen = cb(psbuf, PEM_BUFSIZE, 0, u);
+        if (klen <= 0) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+            X509_SIG_free(p8);
+            goto err;
+        }
+        p8inf = PKCS8_decrypt(p8, psbuf, klen);
+        X509_SIG_free(p8);
+        OPENSSL_cleanse(psbuf, klen);
+        if (!p8inf)
+            goto p8err;
+        ret = EVP_PKCS82PKEY(p8inf);
+        if (x) {
+            if (*x)
+                EVP_PKEY_free((EVP_PKEY *)*x);
+            *x = ret;
+        }
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+    } else if (strcmp(nm, PEM_STRING_RSA) == 0) {
+        /* TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the
+         * standalone format. This and the cases below probably should not
+         * accept PKCS#8. */
+        ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len);
+    } else if (strcmp(nm, PEM_STRING_EC) == 0) {
+        ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len);
+    } else if (strcmp(nm, PEM_STRING_DSA) == 0) {
+        ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len);
+    }
+ p8err:
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+
+ err:
+    OPENSSL_free(nm);
+    OPENSSL_free(data);
+    return (ret);
+}
+
+int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                             unsigned char *kstr, int klen,
+                             pem_password_cb *cb, void *u)
+{
+    return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (char *)kstr, klen, cb, u);
+}
+
+#ifndef OPENSSL_NO_FP_API
+EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
+                              void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    EVP_PKEY *ret = PEM_read_bio_PrivateKey(b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+
+int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                         unsigned char *kstr, int klen,
+                         pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
+    BIO_free(b);
+    return ret;
+}
+
+#endif
+
+/* Transparently read in PKCS#3 or X9.42 DH parameters */
+
+DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
+{
+    char *nm = NULL;
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    DH *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
+        return NULL;
+    p = data;
+
+    ret = d2i_DHparams(x, &p, len);
+
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+    OPENSSL_free(nm);
+    OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    DH *ret = PEM_read_bio_DHparams(b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c.grpc_back
new file mode 100644
index 0000000..5776535
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_pkey.c.grpc_back	
@@ -0,0 +1,218 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/pem.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/dh.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pkcs8.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
+                                  void *u)
+{
+    char *nm = NULL;
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    EVP_PKEY *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
+        return NULL;
+    p = data;
+
+    if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
+        PKCS8_PRIV_KEY_INFO *p8inf;
+        p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
+        if (!p8inf)
+            goto p8err;
+        ret = EVP_PKCS82PKEY(p8inf);
+        if (x) {
+            if (*x)
+                EVP_PKEY_free((EVP_PKEY *)*x);
+            *x = ret;
+        }
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+    } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
+        PKCS8_PRIV_KEY_INFO *p8inf;
+        X509_SIG *p8;
+        int klen;
+        char psbuf[PEM_BUFSIZE];
+        p8 = d2i_X509_SIG(NULL, &p, len);
+        if (!p8)
+            goto p8err;
+
+        klen = 0;
+        if (!cb)
+            cb = PEM_def_callback;
+        klen = cb(psbuf, PEM_BUFSIZE, 0, u);
+        if (klen <= 0) {
+            OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
+            X509_SIG_free(p8);
+            goto err;
+        }
+        p8inf = PKCS8_decrypt(p8, psbuf, klen);
+        X509_SIG_free(p8);
+        OPENSSL_cleanse(psbuf, klen);
+        if (!p8inf)
+            goto p8err;
+        ret = EVP_PKCS82PKEY(p8inf);
+        if (x) {
+            if (*x)
+                EVP_PKEY_free((EVP_PKEY *)*x);
+            *x = ret;
+        }
+        PKCS8_PRIV_KEY_INFO_free(p8inf);
+    } else if (strcmp(nm, PEM_STRING_RSA) == 0) {
+        /* TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the
+         * standalone format. This and the cases below probably should not
+         * accept PKCS#8. */
+        ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len);
+    } else if (strcmp(nm, PEM_STRING_EC) == 0) {
+        ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len);
+    } else if (strcmp(nm, PEM_STRING_DSA) == 0) {
+        ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len);
+    }
+ p8err:
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+
+ err:
+    OPENSSL_free(nm);
+    OPENSSL_free(data);
+    return (ret);
+}
+
+int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                             unsigned char *kstr, int klen,
+                             pem_password_cb *cb, void *u)
+{
+    return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (char *)kstr, klen, cb, u);
+}
+
+#ifndef OPENSSL_NO_FP_API
+EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
+                              void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    EVP_PKEY *ret = PEM_read_bio_PrivateKey(b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+
+int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
+                         unsigned char *kstr, int klen,
+                         pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
+    BIO_free(b);
+    return ret;
+}
+
+#endif
+
+/* Transparently read in PKCS#3 or X9.42 DH parameters */
+
+DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
+{
+    char *nm = NULL;
+    const unsigned char *p = NULL;
+    unsigned char *data = NULL;
+    long len;
+    DH *ret = NULL;
+
+    if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
+        return NULL;
+    p = data;
+
+    ret = d2i_DHparams(x, &p, len);
+
+    if (ret == NULL)
+        OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
+    OPENSSL_free(nm);
+    OPENSSL_free(data);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_FP_API
+DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
+        return NULL;
+    }
+    DH *ret = PEM_read_bio_DHparams(b, x, cb, u);
+    BIO_free(b);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c
new file mode 100644
index 0000000..0d9b3be
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c	
@@ -0,0 +1,65 @@
+/* pem_x509.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/x509.h>
+
+IMPLEMENT_PEM_rw(X509, X509, PEM_STRING_X509, X509)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c.grpc_back
new file mode 100644
index 0000000..97f814d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_x509.c.grpc_back	
@@ -0,0 +1,65 @@
+/* pem_x509.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/bio.h>
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+#include <openssl/x509.h>
+
+IMPLEMENT_PEM_rw(X509, X509, PEM_STRING_X509, X509)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c
new file mode 100644
index 0000000..86dbe0c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c	
@@ -0,0 +1,65 @@
+/* pem_xaux.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/x509.h>
+
+IMPLEMENT_PEM_rw(X509_AUX, X509, PEM_STRING_X509_TRUSTED, X509_AUX)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c.grpc_back
new file mode 100644
index 0000000..b0cceca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pem/pem_xaux.c.grpc_back	
@@ -0,0 +1,65 @@
+/* pem_xaux.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/bio.h>
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+#include <openssl/x509.h>
+
+IMPLEMENT_PEM_rw(X509_AUX, X509, PEM_STRING_X509_TRUSTED, X509_AUX)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h
new file mode 100644
index 0000000..538d249
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h	
@@ -0,0 +1,49 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_PKCS7_INTERNAL_H
+#define OPENSSL_HEADER_PKCS7_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
+// SignedData blob from |cbs| and sets |*out| to point to the rest of the
+// input. If the input is in BER format, then |*der_bytes| will be set to a
+// pointer that needs to be freed by the caller once they have finished
+// processing |*out| (which will be pointing into |*der_bytes|).
+//
+// It returns one on success or zero on error. On error, |*der_bytes| is
+// NULL.
+int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs);
+
+// pkcs7_bundle writes a PKCS#7, SignedData structure to |out| and then calls
+// |cb| with a CBB to which certificate or CRL data can be written, and the
+// opaque context pointer, |arg|. The callback can return zero to indicate an
+// error.
+//
+// pkcs7_bundle returns one on success or zero on error.
+int pkcs7_bundle(CBB *out, int (*cb)(CBB *out, const void *arg),
+                 const void *arg);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_PKCS7_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h.grpc_back
new file mode 100644
index 0000000..9541bea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/internal.h.grpc_back	
@@ -0,0 +1,49 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_PKCS7_INTERNAL_H
+#define OPENSSL_HEADER_PKCS7_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
+// SignedData blob from |cbs| and sets |*out| to point to the rest of the
+// input. If the input is in BER format, then |*der_bytes| will be set to a
+// pointer that needs to be freed by the caller once they have finished
+// processing |*out| (which will be pointing into |*der_bytes|).
+//
+// It returns one on success or zero on error. On error, |*der_bytes| is
+// NULL.
+int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs);
+
+// pkcs7_bundle writes a PKCS#7, SignedData structure to |out| and then calls
+// |cb| with a CBB to which certificate or CRL data can be written, and the
+// opaque context pointer, |arg|. The callback can return zero to indicate an
+// error.
+//
+// pkcs7_bundle returns one on success or zero on error.
+int pkcs7_bundle(CBB *out, int (*cb)(CBB *out, const void *arg),
+                 const void *arg);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_PKCS7_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c
new file mode 100644
index 0000000..3b54a7f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c	
@@ -0,0 +1,159 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/pkcs7.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/pool.h>
+#include <openssl_grpc/stack.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+
+
+// 1.2.840.113549.1.7.1
+static const uint8_t kPKCS7Data[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                     0x0d, 0x01, 0x07, 0x01};
+
+// 1.2.840.113549.1.7.2
+static const uint8_t kPKCS7SignedData[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                           0x0d, 0x01, 0x07, 0x02};
+
+// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
+// SignedData blob from |cbs| and sets |*out| to point to the rest of the
+// input. If the input is in BER format, then |*der_bytes| will be set to a
+// pointer that needs to be freed by the caller once they have finished
+// processing |*out| (which will be pointing into |*der_bytes|).
+//
+// It returns one on success or zero on error. On error, |*der_bytes| is
+// NULL.
+int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs) {
+  CBS in, content_info, content_type, wrapped_signed_data, signed_data;
+  uint64_t version;
+
+  // The input may be in BER format.
+  *der_bytes = NULL;
+  if (!CBS_asn1_ber_to_der(cbs, &in, der_bytes) ||
+      // See https://tools.ietf.org/html/rfc2315#section-7
+      !CBS_get_asn1(&in, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&content_info, &content_type, CBS_ASN1_OBJECT)) {
+    goto err;
+  }
+
+  if (!CBS_mem_equal(&content_type, kPKCS7SignedData,
+                     sizeof(kPKCS7SignedData))) {
+    OPENSSL_PUT_ERROR(PKCS7, PKCS7_R_NOT_PKCS7_SIGNED_DATA);
+    goto err;
+  }
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBS_get_asn1(&content_info, &wrapped_signed_data,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      !CBS_get_asn1(&wrapped_signed_data, &signed_data, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&signed_data, &version) ||
+      !CBS_get_asn1(&signed_data, NULL /* digests */, CBS_ASN1_SET) ||
+      !CBS_get_asn1(&signed_data, NULL /* content */, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  if (version < 1) {
+    OPENSSL_PUT_ERROR(PKCS7, PKCS7_R_BAD_PKCS7_VERSION);
+    goto err;
+  }
+
+  CBS_init(out, CBS_data(&signed_data), CBS_len(&signed_data));
+  return 1;
+
+err:
+  OPENSSL_free(*der_bytes);
+  *der_bytes = NULL;
+  return 0;
+}
+
+int PKCS7_get_raw_certificates(STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs,
+                               CRYPTO_BUFFER_POOL *pool) {
+  CBS signed_data, certificates;
+  uint8_t *der_bytes = NULL;
+  int ret = 0, has_certificates;
+  const size_t initial_certs_len = sk_CRYPTO_BUFFER_num(out_certs);
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!pkcs7_parse_header(&der_bytes, &signed_data, cbs) ||
+      !CBS_get_optional_asn1(
+          &signed_data, &certificates, &has_certificates,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    goto err;
+  }
+
+  if (!has_certificates) {
+    CBS_init(&certificates, NULL, 0);
+  }
+
+  while (CBS_len(&certificates) > 0) {
+    CBS cert;
+    if (!CBS_get_asn1_element(&certificates, &cert, CBS_ASN1_SEQUENCE)) {
+      goto err;
+    }
+
+    CRYPTO_BUFFER *buf = CRYPTO_BUFFER_new_from_CBS(&cert, pool);
+    if (buf == NULL ||
+        !sk_CRYPTO_BUFFER_push(out_certs, buf)) {
+      CRYPTO_BUFFER_free(buf);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(der_bytes);
+
+  if (!ret) {
+    while (sk_CRYPTO_BUFFER_num(out_certs) != initial_certs_len) {
+      CRYPTO_BUFFER *buf = sk_CRYPTO_BUFFER_pop(out_certs);
+      CRYPTO_BUFFER_free(buf);
+    }
+  }
+
+  return ret;
+}
+
+int pkcs7_bundle(CBB *out, int (*cb)(CBB *out, const void *arg),
+                 const void *arg) {
+  CBB outer_seq, oid, wrapped_seq, seq, version_bytes, digest_algos_set,
+      content_info, signer_infos;
+
+  // See https://tools.ietf.org/html/rfc2315#section-7
+  if (!CBB_add_asn1(out, &outer_seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&outer_seq, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPKCS7SignedData, sizeof(kPKCS7SignedData)) ||
+      !CBB_add_asn1(&outer_seq, &wrapped_seq,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      // See https://tools.ietf.org/html/rfc2315#section-9.1
+      !CBB_add_asn1(&wrapped_seq, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&seq, &version_bytes, CBS_ASN1_INTEGER) ||
+      !CBB_add_u8(&version_bytes, 1) ||
+      !CBB_add_asn1(&seq, &digest_algos_set, CBS_ASN1_SET) ||
+      !CBB_add_asn1(&seq, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&content_info, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      !cb(&seq, arg) ||
+      !CBB_add_asn1(&seq, &signer_infos, CBS_ASN1_SET)) {
+    return 0;
+  }
+
+  return CBB_flush(out);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c.grpc_back
new file mode 100644
index 0000000..1d0b139
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7.c.grpc_back	
@@ -0,0 +1,159 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/pkcs7.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/pool.h>
+#include <openssl/stack.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+
+
+// 1.2.840.113549.1.7.1
+static const uint8_t kPKCS7Data[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                     0x0d, 0x01, 0x07, 0x01};
+
+// 1.2.840.113549.1.7.2
+static const uint8_t kPKCS7SignedData[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                           0x0d, 0x01, 0x07, 0x02};
+
+// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
+// SignedData blob from |cbs| and sets |*out| to point to the rest of the
+// input. If the input is in BER format, then |*der_bytes| will be set to a
+// pointer that needs to be freed by the caller once they have finished
+// processing |*out| (which will be pointing into |*der_bytes|).
+//
+// It returns one on success or zero on error. On error, |*der_bytes| is
+// NULL.
+int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs) {
+  CBS in, content_info, content_type, wrapped_signed_data, signed_data;
+  uint64_t version;
+
+  // The input may be in BER format.
+  *der_bytes = NULL;
+  if (!CBS_asn1_ber_to_der(cbs, &in, der_bytes) ||
+      // See https://tools.ietf.org/html/rfc2315#section-7
+      !CBS_get_asn1(&in, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&content_info, &content_type, CBS_ASN1_OBJECT)) {
+    goto err;
+  }
+
+  if (!CBS_mem_equal(&content_type, kPKCS7SignedData,
+                     sizeof(kPKCS7SignedData))) {
+    OPENSSL_PUT_ERROR(PKCS7, PKCS7_R_NOT_PKCS7_SIGNED_DATA);
+    goto err;
+  }
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBS_get_asn1(&content_info, &wrapped_signed_data,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      !CBS_get_asn1(&wrapped_signed_data, &signed_data, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&signed_data, &version) ||
+      !CBS_get_asn1(&signed_data, NULL /* digests */, CBS_ASN1_SET) ||
+      !CBS_get_asn1(&signed_data, NULL /* content */, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  if (version < 1) {
+    OPENSSL_PUT_ERROR(PKCS7, PKCS7_R_BAD_PKCS7_VERSION);
+    goto err;
+  }
+
+  CBS_init(out, CBS_data(&signed_data), CBS_len(&signed_data));
+  return 1;
+
+err:
+  OPENSSL_free(*der_bytes);
+  *der_bytes = NULL;
+  return 0;
+}
+
+int PKCS7_get_raw_certificates(STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs,
+                               CRYPTO_BUFFER_POOL *pool) {
+  CBS signed_data, certificates;
+  uint8_t *der_bytes = NULL;
+  int ret = 0, has_certificates;
+  const size_t initial_certs_len = sk_CRYPTO_BUFFER_num(out_certs);
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!pkcs7_parse_header(&der_bytes, &signed_data, cbs) ||
+      !CBS_get_optional_asn1(
+          &signed_data, &certificates, &has_certificates,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    goto err;
+  }
+
+  if (!has_certificates) {
+    CBS_init(&certificates, NULL, 0);
+  }
+
+  while (CBS_len(&certificates) > 0) {
+    CBS cert;
+    if (!CBS_get_asn1_element(&certificates, &cert, CBS_ASN1_SEQUENCE)) {
+      goto err;
+    }
+
+    CRYPTO_BUFFER *buf = CRYPTO_BUFFER_new_from_CBS(&cert, pool);
+    if (buf == NULL ||
+        !sk_CRYPTO_BUFFER_push(out_certs, buf)) {
+      CRYPTO_BUFFER_free(buf);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(der_bytes);
+
+  if (!ret) {
+    while (sk_CRYPTO_BUFFER_num(out_certs) != initial_certs_len) {
+      CRYPTO_BUFFER *buf = sk_CRYPTO_BUFFER_pop(out_certs);
+      CRYPTO_BUFFER_free(buf);
+    }
+  }
+
+  return ret;
+}
+
+int pkcs7_bundle(CBB *out, int (*cb)(CBB *out, const void *arg),
+                 const void *arg) {
+  CBB outer_seq, oid, wrapped_seq, seq, version_bytes, digest_algos_set,
+      content_info, signer_infos;
+
+  // See https://tools.ietf.org/html/rfc2315#section-7
+  if (!CBB_add_asn1(out, &outer_seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&outer_seq, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPKCS7SignedData, sizeof(kPKCS7SignedData)) ||
+      !CBB_add_asn1(&outer_seq, &wrapped_seq,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      // See https://tools.ietf.org/html/rfc2315#section-9.1
+      !CBB_add_asn1(&wrapped_seq, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&seq, &version_bytes, CBS_ASN1_INTEGER) ||
+      !CBB_add_u8(&version_bytes, 1) ||
+      !CBB_add_asn1(&seq, &digest_algos_set, CBS_ASN1_SET) ||
+      !CBB_add_asn1(&seq, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&content_info, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      !cb(&seq, arg) ||
+      !CBB_add_asn1(&seq, &signer_infos, CBS_ASN1_SET)) {
+    return 0;
+  }
+
+  return CBB_flush(out);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c
new file mode 100644
index 0000000..b420714
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c	
@@ -0,0 +1,385 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/pkcs7.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/pool.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs) {
+  int ret = 0;
+  const size_t initial_certs_len = sk_X509_num(out_certs);
+  STACK_OF(CRYPTO_BUFFER) *raw = sk_CRYPTO_BUFFER_new_null();
+  if (raw == NULL ||
+      !PKCS7_get_raw_certificates(raw, cbs, NULL)) {
+    goto err;
+  }
+
+  for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(raw); i++) {
+    CRYPTO_BUFFER *buf = sk_CRYPTO_BUFFER_value(raw, i);
+    X509 *x509 = X509_parse_from_buffer(buf);
+    if (x509 == NULL ||
+        !sk_X509_push(out_certs, x509)) {
+      X509_free(x509);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  sk_CRYPTO_BUFFER_pop_free(raw, CRYPTO_BUFFER_free);
+  if (!ret) {
+    while (sk_X509_num(out_certs) != initial_certs_len) {
+      X509 *x509 = sk_X509_pop(out_certs);
+      X509_free(x509);
+    }
+  }
+
+  return ret;
+}
+
+int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs) {
+  CBS signed_data, crls;
+  uint8_t *der_bytes = NULL;
+  int ret = 0, has_crls;
+  const size_t initial_crls_len = sk_X509_CRL_num(out_crls);
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!pkcs7_parse_header(&der_bytes, &signed_data, cbs) ||
+      // Even if only CRLs are included, there may be an empty certificates
+      // block. OpenSSL does this, for example.
+      !CBS_get_optional_asn1(
+          &signed_data, NULL, NULL,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      !CBS_get_optional_asn1(
+          &signed_data, &crls, &has_crls,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 1)) {
+    goto err;
+  }
+
+  if (!has_crls) {
+    CBS_init(&crls, NULL, 0);
+  }
+
+  while (CBS_len(&crls) > 0) {
+    CBS crl_data;
+    X509_CRL *crl;
+    const uint8_t *inp;
+
+    if (!CBS_get_asn1_element(&crls, &crl_data, CBS_ASN1_SEQUENCE)) {
+      goto err;
+    }
+
+    if (CBS_len(&crl_data) > LONG_MAX) {
+      goto err;
+    }
+    inp = CBS_data(&crl_data);
+    crl = d2i_X509_CRL(NULL, &inp, (long)CBS_len(&crl_data));
+    if (!crl) {
+      goto err;
+    }
+
+    assert(inp == CBS_data(&crl_data) + CBS_len(&crl_data));
+
+    if (sk_X509_CRL_push(out_crls, crl) == 0) {
+      X509_CRL_free(crl);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(der_bytes);
+
+  if (!ret) {
+    while (sk_X509_CRL_num(out_crls) != initial_crls_len) {
+      X509_CRL_free(sk_X509_CRL_pop(out_crls));
+    }
+  }
+
+  return ret;
+}
+
+int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs, BIO *pem_bio) {
+  uint8_t *data;
+  long len;
+  int ret;
+
+  // Even though we pass PEM_STRING_PKCS7 as the expected PEM type here, PEM
+  // internally will actually allow several other values too, including
+  // "CERTIFICATE".
+  if (!PEM_bytes_read_bio(&data, &len, NULL /* PEM type output */,
+                          PEM_STRING_PKCS7, pem_bio,
+                          NULL /* password callback */,
+                          NULL /* password callback argument */)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  ret = PKCS7_get_certificates(out_certs, &cbs);
+  OPENSSL_free(data);
+  return ret;
+}
+
+int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls, BIO *pem_bio) {
+  uint8_t *data;
+  long len;
+  int ret;
+
+  // Even though we pass PEM_STRING_PKCS7 as the expected PEM type here, PEM
+  // internally will actually allow several other values too, including
+  // "CERTIFICATE".
+  if (!PEM_bytes_read_bio(&data, &len, NULL /* PEM type output */,
+                          PEM_STRING_PKCS7, pem_bio,
+                          NULL /* password callback */,
+                          NULL /* password callback argument */)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  ret = PKCS7_get_CRLs(out_crls, &cbs);
+  OPENSSL_free(data);
+  return ret;
+}
+
+static int pkcs7_bundle_certificates_cb(CBB *out, const void *arg) {
+  const STACK_OF(X509) *certs = arg;
+  size_t i;
+  CBB certificates;
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBB_add_asn1(out, &certificates,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    return 0;
+  }
+
+  for (i = 0; i < sk_X509_num(certs); i++) {
+    X509 *x509 = sk_X509_value(certs, i);
+    uint8_t *buf;
+    int len = i2d_X509(x509, NULL);
+
+    if (len < 0 ||
+        !CBB_add_space(&certificates, &buf, len) ||
+        i2d_X509(x509, &buf) < 0) {
+      return 0;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+int PKCS7_bundle_certificates(CBB *out, const STACK_OF(X509) *certs) {
+  return pkcs7_bundle(out, pkcs7_bundle_certificates_cb, certs);
+}
+
+static int pkcs7_bundle_crls_cb(CBB *out, const void *arg) {
+  const STACK_OF(X509_CRL) *crls = arg;
+  size_t i;
+  CBB crl_data;
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBB_add_asn1(out, &crl_data,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 1)) {
+    return 0;
+  }
+
+  for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+    X509_CRL *crl = sk_X509_CRL_value(crls, i);
+    uint8_t *buf;
+    int len = i2d_X509_CRL(crl, NULL);
+
+    if (len < 0 ||
+        !CBB_add_space(&crl_data, &buf, len) ||
+        i2d_X509_CRL(crl, &buf) < 0) {
+      return 0;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls) {
+  return pkcs7_bundle(out, pkcs7_bundle_crls_cb, crls);
+}
+
+static PKCS7 *pkcs7_new(CBS *cbs) {
+  PKCS7 *ret = OPENSSL_malloc(sizeof(PKCS7));
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(PKCS7));
+  ret->type = (ASN1_OBJECT *)OBJ_nid2obj(NID_pkcs7_signed);
+  ret->d.sign = OPENSSL_malloc(sizeof(PKCS7_SIGNED));
+  if (ret->d.sign == NULL) {
+    goto err;
+  }
+  ret->d.sign->cert = sk_X509_new_null();
+  ret->d.sign->crl = sk_X509_CRL_new_null();
+  CBS copy = *cbs, copy2 = *cbs;
+  if (ret->d.sign->cert == NULL || ret->d.sign->crl == NULL ||
+      !PKCS7_get_certificates(ret->d.sign->cert, &copy) ||
+      !PKCS7_get_CRLs(ret->d.sign->crl, cbs)) {
+    goto err;
+  }
+
+  if (sk_X509_num(ret->d.sign->cert) == 0) {
+    sk_X509_free(ret->d.sign->cert);
+    ret->d.sign->cert = NULL;
+  }
+
+  if (sk_X509_CRL_num(ret->d.sign->crl) == 0) {
+    sk_X509_CRL_free(ret->d.sign->crl);
+    ret->d.sign->crl = NULL;
+  }
+
+  ret->ber_len = CBS_len(&copy2) - CBS_len(cbs);
+  ret->ber_bytes = OPENSSL_memdup(CBS_data(&copy2), ret->ber_len);
+  if (ret->ber_bytes == NULL) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  PKCS7_free(ret);
+  return NULL;
+}
+
+PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
+                 size_t len) {
+  CBS cbs;
+  CBS_init(&cbs, *inp, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  *inp = CBS_data(&cbs);
+  if (out != NULL) {
+    PKCS7_free(*out);
+    *out = ret;
+  }
+  return ret;
+}
+
+PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out) {
+  // Use a generous bound, to allow for PKCS#7 files containing large root sets.
+  static const size_t kMaxSize = 4 * 1024 * 1024;
+  uint8_t *data;
+  size_t len;
+  if (!BIO_read_asn1(bio, &data, &len, kMaxSize)) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  OPENSSL_free(data);
+  if (out != NULL && ret != NULL) {
+    PKCS7_free(*out);
+    *out = ret;
+  }
+  return ret;
+}
+
+int i2d_PKCS7(const PKCS7 *p7, uint8_t **out) {
+  if (p7->ber_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (out == NULL) {
+    return (int)p7->ber_len;
+  }
+
+  if (*out == NULL) {
+    *out = OPENSSL_malloc(p7->ber_len);
+    if (*out == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    OPENSSL_memcpy(*out, p7->ber_bytes, p7->ber_len);
+  } else {
+    OPENSSL_memcpy(*out, p7->ber_bytes, p7->ber_len);
+    *out += p7->ber_len;
+  }
+  return (int)p7->ber_len;
+}
+
+int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7) {
+  return BIO_write_all(bio, p7->ber_bytes, p7->ber_len);
+}
+
+void PKCS7_free(PKCS7 *p7) {
+  if (p7 == NULL) {
+    return;
+  }
+
+  OPENSSL_free(p7->ber_bytes);
+  ASN1_OBJECT_free(p7->type);
+  // We only supported signed data.
+  if (p7->d.sign != NULL) {
+    sk_X509_pop_free(p7->d.sign->cert, X509_free);
+    sk_X509_CRL_pop_free(p7->d.sign->crl, X509_CRL_free);
+    OPENSSL_free(p7->d.sign);
+  }
+  OPENSSL_free(p7);
+}
+
+// We only support signed data, so these getters are no-ops.
+int PKCS7_type_is_data(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_digest(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_encrypted(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_enveloped(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_signed(const PKCS7 *p7) { return 1; }
+int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7) { return 0; }
+
+PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
+                  BIO *data, int flags) {
+  if (sign_cert != NULL || pkey != NULL || flags != PKCS7_DETACHED) {
+    OPENSSL_PUT_ERROR(PKCS7, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return NULL;
+  }
+
+  uint8_t *der;
+  size_t len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 2048) ||
+      !PKCS7_bundle_certificates(&cbb, certs) ||
+      !CBB_finish(&cbb, &der, &len)) {
+    CBB_cleanup(&cbb);
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, der, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  OPENSSL_free(der);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c.grpc_back
new file mode 100644
index 0000000..107bdea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs7/pkcs7_x509.c.grpc_back	
@@ -0,0 +1,385 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/pkcs7.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/pem.h>
+#include <openssl/pool.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs) {
+  int ret = 0;
+  const size_t initial_certs_len = sk_X509_num(out_certs);
+  STACK_OF(CRYPTO_BUFFER) *raw = sk_CRYPTO_BUFFER_new_null();
+  if (raw == NULL ||
+      !PKCS7_get_raw_certificates(raw, cbs, NULL)) {
+    goto err;
+  }
+
+  for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(raw); i++) {
+    CRYPTO_BUFFER *buf = sk_CRYPTO_BUFFER_value(raw, i);
+    X509 *x509 = X509_parse_from_buffer(buf);
+    if (x509 == NULL ||
+        !sk_X509_push(out_certs, x509)) {
+      X509_free(x509);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  sk_CRYPTO_BUFFER_pop_free(raw, CRYPTO_BUFFER_free);
+  if (!ret) {
+    while (sk_X509_num(out_certs) != initial_certs_len) {
+      X509 *x509 = sk_X509_pop(out_certs);
+      X509_free(x509);
+    }
+  }
+
+  return ret;
+}
+
+int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs) {
+  CBS signed_data, crls;
+  uint8_t *der_bytes = NULL;
+  int ret = 0, has_crls;
+  const size_t initial_crls_len = sk_X509_CRL_num(out_crls);
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!pkcs7_parse_header(&der_bytes, &signed_data, cbs) ||
+      // Even if only CRLs are included, there may be an empty certificates
+      // block. OpenSSL does this, for example.
+      !CBS_get_optional_asn1(
+          &signed_data, NULL, NULL,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      !CBS_get_optional_asn1(
+          &signed_data, &crls, &has_crls,
+          CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 1)) {
+    goto err;
+  }
+
+  if (!has_crls) {
+    CBS_init(&crls, NULL, 0);
+  }
+
+  while (CBS_len(&crls) > 0) {
+    CBS crl_data;
+    X509_CRL *crl;
+    const uint8_t *inp;
+
+    if (!CBS_get_asn1_element(&crls, &crl_data, CBS_ASN1_SEQUENCE)) {
+      goto err;
+    }
+
+    if (CBS_len(&crl_data) > LONG_MAX) {
+      goto err;
+    }
+    inp = CBS_data(&crl_data);
+    crl = d2i_X509_CRL(NULL, &inp, (long)CBS_len(&crl_data));
+    if (!crl) {
+      goto err;
+    }
+
+    assert(inp == CBS_data(&crl_data) + CBS_len(&crl_data));
+
+    if (sk_X509_CRL_push(out_crls, crl) == 0) {
+      X509_CRL_free(crl);
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(der_bytes);
+
+  if (!ret) {
+    while (sk_X509_CRL_num(out_crls) != initial_crls_len) {
+      X509_CRL_free(sk_X509_CRL_pop(out_crls));
+    }
+  }
+
+  return ret;
+}
+
+int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs, BIO *pem_bio) {
+  uint8_t *data;
+  long len;
+  int ret;
+
+  // Even though we pass PEM_STRING_PKCS7 as the expected PEM type here, PEM
+  // internally will actually allow several other values too, including
+  // "CERTIFICATE".
+  if (!PEM_bytes_read_bio(&data, &len, NULL /* PEM type output */,
+                          PEM_STRING_PKCS7, pem_bio,
+                          NULL /* password callback */,
+                          NULL /* password callback argument */)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  ret = PKCS7_get_certificates(out_certs, &cbs);
+  OPENSSL_free(data);
+  return ret;
+}
+
+int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls, BIO *pem_bio) {
+  uint8_t *data;
+  long len;
+  int ret;
+
+  // Even though we pass PEM_STRING_PKCS7 as the expected PEM type here, PEM
+  // internally will actually allow several other values too, including
+  // "CERTIFICATE".
+  if (!PEM_bytes_read_bio(&data, &len, NULL /* PEM type output */,
+                          PEM_STRING_PKCS7, pem_bio,
+                          NULL /* password callback */,
+                          NULL /* password callback argument */)) {
+    return 0;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  ret = PKCS7_get_CRLs(out_crls, &cbs);
+  OPENSSL_free(data);
+  return ret;
+}
+
+static int pkcs7_bundle_certificates_cb(CBB *out, const void *arg) {
+  const STACK_OF(X509) *certs = arg;
+  size_t i;
+  CBB certificates;
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBB_add_asn1(out, &certificates,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    return 0;
+  }
+
+  for (i = 0; i < sk_X509_num(certs); i++) {
+    X509 *x509 = sk_X509_value(certs, i);
+    uint8_t *buf;
+    int len = i2d_X509(x509, NULL);
+
+    if (len < 0 ||
+        !CBB_add_space(&certificates, &buf, len) ||
+        i2d_X509(x509, &buf) < 0) {
+      return 0;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+int PKCS7_bundle_certificates(CBB *out, const STACK_OF(X509) *certs) {
+  return pkcs7_bundle(out, pkcs7_bundle_certificates_cb, certs);
+}
+
+static int pkcs7_bundle_crls_cb(CBB *out, const void *arg) {
+  const STACK_OF(X509_CRL) *crls = arg;
+  size_t i;
+  CBB crl_data;
+
+  // See https://tools.ietf.org/html/rfc2315#section-9.1
+  if (!CBB_add_asn1(out, &crl_data,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 1)) {
+    return 0;
+  }
+
+  for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+    X509_CRL *crl = sk_X509_CRL_value(crls, i);
+    uint8_t *buf;
+    int len = i2d_X509_CRL(crl, NULL);
+
+    if (len < 0 ||
+        !CBB_add_space(&crl_data, &buf, len) ||
+        i2d_X509_CRL(crl, &buf) < 0) {
+      return 0;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls) {
+  return pkcs7_bundle(out, pkcs7_bundle_crls_cb, crls);
+}
+
+static PKCS7 *pkcs7_new(CBS *cbs) {
+  PKCS7 *ret = OPENSSL_malloc(sizeof(PKCS7));
+  if (ret == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(ret, 0, sizeof(PKCS7));
+  ret->type = (ASN1_OBJECT *)OBJ_nid2obj(NID_pkcs7_signed);
+  ret->d.sign = OPENSSL_malloc(sizeof(PKCS7_SIGNED));
+  if (ret->d.sign == NULL) {
+    goto err;
+  }
+  ret->d.sign->cert = sk_X509_new_null();
+  ret->d.sign->crl = sk_X509_CRL_new_null();
+  CBS copy = *cbs, copy2 = *cbs;
+  if (ret->d.sign->cert == NULL || ret->d.sign->crl == NULL ||
+      !PKCS7_get_certificates(ret->d.sign->cert, &copy) ||
+      !PKCS7_get_CRLs(ret->d.sign->crl, cbs)) {
+    goto err;
+  }
+
+  if (sk_X509_num(ret->d.sign->cert) == 0) {
+    sk_X509_free(ret->d.sign->cert);
+    ret->d.sign->cert = NULL;
+  }
+
+  if (sk_X509_CRL_num(ret->d.sign->crl) == 0) {
+    sk_X509_CRL_free(ret->d.sign->crl);
+    ret->d.sign->crl = NULL;
+  }
+
+  ret->ber_len = CBS_len(&copy2) - CBS_len(cbs);
+  ret->ber_bytes = OPENSSL_memdup(CBS_data(&copy2), ret->ber_len);
+  if (ret->ber_bytes == NULL) {
+    goto err;
+  }
+
+  return ret;
+
+err:
+  PKCS7_free(ret);
+  return NULL;
+}
+
+PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
+                 size_t len) {
+  CBS cbs;
+  CBS_init(&cbs, *inp, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  *inp = CBS_data(&cbs);
+  if (out != NULL) {
+    PKCS7_free(*out);
+    *out = ret;
+  }
+  return ret;
+}
+
+PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out) {
+  // Use a generous bound, to allow for PKCS#7 files containing large root sets.
+  static const size_t kMaxSize = 4 * 1024 * 1024;
+  uint8_t *data;
+  size_t len;
+  if (!BIO_read_asn1(bio, &data, &len, kMaxSize)) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, data, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  OPENSSL_free(data);
+  if (out != NULL && ret != NULL) {
+    PKCS7_free(*out);
+    *out = ret;
+  }
+  return ret;
+}
+
+int i2d_PKCS7(const PKCS7 *p7, uint8_t **out) {
+  if (p7->ber_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (out == NULL) {
+    return (int)p7->ber_len;
+  }
+
+  if (*out == NULL) {
+    *out = OPENSSL_malloc(p7->ber_len);
+    if (*out == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    OPENSSL_memcpy(*out, p7->ber_bytes, p7->ber_len);
+  } else {
+    OPENSSL_memcpy(*out, p7->ber_bytes, p7->ber_len);
+    *out += p7->ber_len;
+  }
+  return (int)p7->ber_len;
+}
+
+int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7) {
+  return BIO_write_all(bio, p7->ber_bytes, p7->ber_len);
+}
+
+void PKCS7_free(PKCS7 *p7) {
+  if (p7 == NULL) {
+    return;
+  }
+
+  OPENSSL_free(p7->ber_bytes);
+  ASN1_OBJECT_free(p7->type);
+  // We only supported signed data.
+  if (p7->d.sign != NULL) {
+    sk_X509_pop_free(p7->d.sign->cert, X509_free);
+    sk_X509_CRL_pop_free(p7->d.sign->crl, X509_CRL_free);
+    OPENSSL_free(p7->d.sign);
+  }
+  OPENSSL_free(p7);
+}
+
+// We only support signed data, so these getters are no-ops.
+int PKCS7_type_is_data(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_digest(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_encrypted(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_enveloped(const PKCS7 *p7) { return 0; }
+int PKCS7_type_is_signed(const PKCS7 *p7) { return 1; }
+int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7) { return 0; }
+
+PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
+                  BIO *data, int flags) {
+  if (sign_cert != NULL || pkey != NULL || flags != PKCS7_DETACHED) {
+    OPENSSL_PUT_ERROR(PKCS7, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return NULL;
+  }
+
+  uint8_t *der;
+  size_t len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 2048) ||
+      !PKCS7_bundle_certificates(&cbb, certs) ||
+      !CBB_finish(&cbb, &der, &len)) {
+    CBB_cleanup(&cbb);
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, der, len);
+  PKCS7 *ret = pkcs7_new(&cbs);
+  OPENSSL_free(der);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h
new file mode 100644
index 0000000..5f43fcc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h	
@@ -0,0 +1,131 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_PKCS8_INTERNAL_H
+#define OPENSSL_HEADER_PKCS8_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// pkcs8_pbe_decrypt decrypts |in| using the PBE scheme described by
+// |algorithm|, which should be a serialized AlgorithmIdentifier structure. On
+// success, it sets |*out| to a newly-allocated buffer containing the decrypted
+// result and returns one. Otherwise, it returns zero.
+int pkcs8_pbe_decrypt(uint8_t **out, size_t *out_len, CBS *algorithm,
+                      const char *pass, size_t pass_len, const uint8_t *in,
+                      size_t in_len);
+
+#define PKCS12_KEY_ID 1
+#define PKCS12_IV_ID 2
+#define PKCS12_MAC_ID 3
+
+// pkcs12_key_gen runs the PKCS#12 key derivation function as specified in
+// RFC 7292, appendix B. On success, it writes the resulting |out_len| bytes of
+// key material to |out| and returns one. Otherwise, it returns zero. |id|
+// should be one of the |PKCS12_*_ID| values.
+int pkcs12_key_gen(const char *pass, size_t pass_len, const uint8_t *salt,
+                   size_t salt_len, uint8_t id, unsigned iterations,
+                   size_t out_len, uint8_t *out, const EVP_MD *md);
+
+// pkcs12_pbe_encrypt_init configures |ctx| for encrypting with a PBES1 scheme
+// defined in PKCS#12. It writes the corresponding AlgorithmIdentifier to |out|.
+int pkcs12_pbe_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx, int alg,
+                            unsigned iterations, const char *pass,
+                            size_t pass_len, const uint8_t *salt,
+                            size_t salt_len);
+
+struct pbe_suite {
+  int pbe_nid;
+  uint8_t oid[10];
+  uint8_t oid_len;
+  const EVP_CIPHER *(*cipher_func)(void);
+  const EVP_MD *(*md_func)(void);
+  // decrypt_init initialize |ctx| for decrypting. The password is specified by
+  // |pass| and |pass_len|. |param| contains the serialized parameters field of
+  // the AlgorithmIdentifier.
+  //
+  // It returns one on success and zero on error.
+  int (*decrypt_init)(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                      const char *pass, size_t pass_len, CBS *param);
+};
+
+#define PKCS5_DEFAULT_ITERATIONS 2048
+#define PKCS5_SALT_LEN 8
+
+int PKCS5_pbe2_decrypt_init(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                            const char *pass, size_t pass_len, CBS *param);
+
+// PKCS5_pbe2_encrypt_init configures |ctx| for encrypting with PKCS #5 PBES2,
+// as defined in RFC 2998, with the specified parameters. It writes the
+// corresponding AlgorithmIdentifier to |out|.
+int PKCS5_pbe2_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx,
+                            const EVP_CIPHER *cipher, unsigned iterations,
+                            const char *pass, size_t pass_len,
+                            const uint8_t *salt, size_t salt_len);
+
+// pkcs12_iterations_acceptable returns one if |iterations| is a reasonable
+// number of PBKDF2 iterations and zero otherwise.
+int pkcs12_iterations_acceptable(uint64_t iterations);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_PKCS8_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h.grpc_back
new file mode 100644
index 0000000..c3302f7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/internal.h.grpc_back	
@@ -0,0 +1,131 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_PKCS8_INTERNAL_H
+#define OPENSSL_HEADER_PKCS8_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// pkcs8_pbe_decrypt decrypts |in| using the PBE scheme described by
+// |algorithm|, which should be a serialized AlgorithmIdentifier structure. On
+// success, it sets |*out| to a newly-allocated buffer containing the decrypted
+// result and returns one. Otherwise, it returns zero.
+int pkcs8_pbe_decrypt(uint8_t **out, size_t *out_len, CBS *algorithm,
+                      const char *pass, size_t pass_len, const uint8_t *in,
+                      size_t in_len);
+
+#define PKCS12_KEY_ID 1
+#define PKCS12_IV_ID 2
+#define PKCS12_MAC_ID 3
+
+// pkcs12_key_gen runs the PKCS#12 key derivation function as specified in
+// RFC 7292, appendix B. On success, it writes the resulting |out_len| bytes of
+// key material to |out| and returns one. Otherwise, it returns zero. |id|
+// should be one of the |PKCS12_*_ID| values.
+int pkcs12_key_gen(const char *pass, size_t pass_len, const uint8_t *salt,
+                   size_t salt_len, uint8_t id, unsigned iterations,
+                   size_t out_len, uint8_t *out, const EVP_MD *md);
+
+// pkcs12_pbe_encrypt_init configures |ctx| for encrypting with a PBES1 scheme
+// defined in PKCS#12. It writes the corresponding AlgorithmIdentifier to |out|.
+int pkcs12_pbe_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx, int alg,
+                            unsigned iterations, const char *pass,
+                            size_t pass_len, const uint8_t *salt,
+                            size_t salt_len);
+
+struct pbe_suite {
+  int pbe_nid;
+  uint8_t oid[10];
+  uint8_t oid_len;
+  const EVP_CIPHER *(*cipher_func)(void);
+  const EVP_MD *(*md_func)(void);
+  // decrypt_init initialize |ctx| for decrypting. The password is specified by
+  // |pass| and |pass_len|. |param| contains the serialized parameters field of
+  // the AlgorithmIdentifier.
+  //
+  // It returns one on success and zero on error.
+  int (*decrypt_init)(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                      const char *pass, size_t pass_len, CBS *param);
+};
+
+#define PKCS5_DEFAULT_ITERATIONS 2048
+#define PKCS5_SALT_LEN 8
+
+int PKCS5_pbe2_decrypt_init(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                            const char *pass, size_t pass_len, CBS *param);
+
+// PKCS5_pbe2_encrypt_init configures |ctx| for encrypting with PKCS #5 PBES2,
+// as defined in RFC 2998, with the specified parameters. It writes the
+// corresponding AlgorithmIdentifier to |out|.
+int PKCS5_pbe2_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx,
+                            const EVP_CIPHER *cipher, unsigned iterations,
+                            const char *pass, size_t pass_len,
+                            const uint8_t *salt, size_t salt_len);
+
+// pkcs12_iterations_acceptable returns one if |iterations| is a reasonable
+// number of PBKDF2 iterations and zero otherwise.
+int pkcs12_iterations_acceptable(uint64_t iterations);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_PKCS8_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c
new file mode 100644
index 0000000..4468d9e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c	
@@ -0,0 +1,316 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999-2004.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/pkcs8.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// 1.2.840.113549.1.5.12
+static const uint8_t kPBKDF2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                  0x0d, 0x01, 0x05, 0x0c};
+
+// 1.2.840.113549.1.5.13
+static const uint8_t kPBES2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                 0x0d, 0x01, 0x05, 0x0d};
+
+// 1.2.840.113549.2.7
+static const uint8_t kHMACWithSHA1[] = {0x2a, 0x86, 0x48, 0x86,
+                                        0xf7, 0x0d, 0x02, 0x07};
+
+// 1.2.840.113549.2.9
+static const uint8_t kHMACWithSHA256[] = {0x2a, 0x86, 0x48, 0x86,
+                                          0xf7, 0x0d, 0x02, 0x09};
+
+static const struct {
+  uint8_t oid[9];
+  uint8_t oid_len;
+  int nid;
+  const EVP_CIPHER *(*cipher_func)(void);
+} kCipherOIDs[] = {
+    // 1.2.840.113549.3.2
+    {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x02},
+     8,
+     NID_rc2_cbc,
+     &EVP_rc2_cbc},
+    // 1.2.840.113549.3.7
+    {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x07},
+     8,
+     NID_des_ede3_cbc,
+     &EVP_des_ede3_cbc},
+    // 2.16.840.1.101.3.4.1.2
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x02},
+     9,
+     NID_aes_128_cbc,
+     &EVP_aes_128_cbc},
+    // 2.16.840.1.101.3.4.1.22
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x16},
+     9,
+     NID_aes_192_cbc,
+     &EVP_aes_192_cbc},
+    // 2.16.840.1.101.3.4.1.42
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x2a},
+     9,
+     NID_aes_256_cbc,
+     &EVP_aes_256_cbc},
+};
+
+static const EVP_CIPHER *cbs_to_cipher(const CBS *cbs) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) {
+    if (CBS_mem_equal(cbs, kCipherOIDs[i].oid, kCipherOIDs[i].oid_len)) {
+      return kCipherOIDs[i].cipher_func();
+    }
+  }
+
+  return NULL;
+}
+
+static int add_cipher_oid(CBB *out, int nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) {
+    if (kCipherOIDs[i].nid == nid) {
+      CBB child;
+      return CBB_add_asn1(out, &child, CBS_ASN1_OBJECT) &&
+             CBB_add_bytes(&child, kCipherOIDs[i].oid,
+                           kCipherOIDs[i].oid_len) &&
+             CBB_flush(out);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER);
+  return 0;
+}
+
+static int pkcs5_pbe2_cipher_init(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                                  const EVP_MD *pbkdf2_md, unsigned iterations,
+                                  const char *pass, size_t pass_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  const uint8_t *iv, size_t iv_len, int enc) {
+  if (iv_len != EVP_CIPHER_iv_length(cipher)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_ERROR_SETTING_CIPHER_PARAMS);
+    return 0;
+  }
+
+  uint8_t key[EVP_MAX_KEY_LENGTH];
+  int ret = PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iterations,
+                              pbkdf2_md, EVP_CIPHER_key_length(cipher), key) &&
+            EVP_CipherInit_ex(ctx, cipher, NULL /* engine */, key, iv, enc);
+  OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+  return ret;
+}
+
+int PKCS5_pbe2_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx,
+                            const EVP_CIPHER *cipher, unsigned iterations,
+                            const char *pass, size_t pass_len,
+                            const uint8_t *salt, size_t salt_len) {
+  int cipher_nid = EVP_CIPHER_nid(cipher);
+  if (cipher_nid == NID_undef) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
+    return 0;
+  }
+
+  // Generate a random IV.
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  if (!RAND_bytes(iv, EVP_CIPHER_iv_length(cipher))) {
+    return 0;
+  }
+
+  // See RFC 2898, appendix A.
+  CBB algorithm, oid, param, kdf, kdf_oid, kdf_param, salt_cbb, cipher_cbb,
+      iv_cbb;
+  if (!CBB_add_asn1(out, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPBES2, sizeof(kPBES2)) ||
+      !CBB_add_asn1(&algorithm, &param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&param, &kdf, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&kdf, &kdf_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&kdf_oid, kPBKDF2, sizeof(kPBKDF2)) ||
+      !CBB_add_asn1(&kdf, &kdf_param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&kdf_param, &salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&salt_cbb, salt, salt_len) ||
+      !CBB_add_asn1_uint64(&kdf_param, iterations) ||
+      // Specify a key length for RC2.
+      (cipher_nid == NID_rc2_cbc &&
+       !CBB_add_asn1_uint64(&kdf_param, EVP_CIPHER_key_length(cipher))) ||
+      // Omit the PRF. We use the default hmacWithSHA1.
+      !CBB_add_asn1(&param, &cipher_cbb, CBS_ASN1_SEQUENCE) ||
+      !add_cipher_oid(&cipher_cbb, cipher_nid) ||
+      // RFC 2898 says RC2-CBC and RC5-CBC-Pad use a SEQUENCE with version and
+      // IV, but OpenSSL always uses an OCTET STRING IV, so we do the same.
+      !CBB_add_asn1(&cipher_cbb, &iv_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&iv_cbb, iv, EVP_CIPHER_iv_length(cipher)) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return pkcs5_pbe2_cipher_init(ctx, cipher, EVP_sha1(), iterations, pass,
+                                pass_len, salt, salt_len, iv,
+                                EVP_CIPHER_iv_length(cipher), 1 /* encrypt */);
+}
+
+int PKCS5_pbe2_decrypt_init(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                            const char *pass, size_t pass_len, CBS *param) {
+  CBS pbe_param, kdf, kdf_obj, enc_scheme, enc_obj;
+  if (!CBS_get_asn1(param, &pbe_param, CBS_ASN1_SEQUENCE) ||
+      CBS_len(param) != 0 ||
+      !CBS_get_asn1(&pbe_param, &kdf, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pbe_param, &enc_scheme, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&pbe_param) != 0 ||
+      !CBS_get_asn1(&kdf, &kdf_obj, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(&enc_scheme, &enc_obj, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  // Only PBKDF2 is supported.
+  if (!CBS_mem_equal(&kdf_obj, kPBKDF2, sizeof(kPBKDF2))) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
+    return 0;
+  }
+
+  // See if we recognise the encryption algorithm.
+  const EVP_CIPHER *cipher = cbs_to_cipher(&enc_obj);
+  if (cipher == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER);
+    return 0;
+  }
+
+  // Parse the KDF parameters. See RFC 8018, appendix A.2.
+  CBS pbkdf2_params, salt;
+  uint64_t iterations;
+  if (!CBS_get_asn1(&kdf, &pbkdf2_params, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&kdf) != 0 ||
+      !CBS_get_asn1(&pbkdf2_params, &salt, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_uint64(&pbkdf2_params, &iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (!pkcs12_iterations_acceptable(iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  // The optional keyLength parameter, if present, must match the key length of
+  // the cipher.
+  if (CBS_peek_asn1_tag(&pbkdf2_params, CBS_ASN1_INTEGER)) {
+    uint64_t key_len;
+    if (!CBS_get_asn1_uint64(&pbkdf2_params, &key_len)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (key_len != EVP_CIPHER_key_length(cipher)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEYLENGTH);
+      return 0;
+    }
+  }
+
+  const EVP_MD *md = EVP_sha1();
+  if (CBS_len(&pbkdf2_params) != 0) {
+    CBS alg_id, prf;
+    if (!CBS_get_asn1(&pbkdf2_params, &alg_id, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&alg_id, &prf, CBS_ASN1_OBJECT) ||
+        CBS_len(&pbkdf2_params) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (CBS_mem_equal(&prf, kHMACWithSHA1, sizeof(kHMACWithSHA1))) {
+      // hmacWithSHA1 is the DEFAULT, so DER requires it be omitted, but we
+      // match OpenSSL in tolerating it being present.
+      md = EVP_sha1();
+    } else if (CBS_mem_equal(&prf, kHMACWithSHA256, sizeof(kHMACWithSHA256))) {
+      md = EVP_sha256();
+    } else {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF);
+      return 0;
+    }
+
+    // All supported PRFs use a NULL parameter.
+    CBS null;
+    if (!CBS_get_asn1(&alg_id, &null, CBS_ASN1_NULL) ||
+        CBS_len(&null) != 0 ||
+        CBS_len(&alg_id) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+  }
+
+  // Parse the encryption scheme parameters. Note OpenSSL does not match the
+  // specification. Per RFC 2898, this should depend on the encryption scheme.
+  // In particular, RC2-CBC uses a SEQUENCE with version and IV. We align with
+  // OpenSSL.
+  CBS iv;
+  if (!CBS_get_asn1(&enc_scheme, &iv, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&enc_scheme) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF);
+    return 0;
+  }
+
+  return pkcs5_pbe2_cipher_init(ctx, cipher, md, (unsigned)iterations, pass,
+                                pass_len, CBS_data(&salt), CBS_len(&salt),
+                                CBS_data(&iv), CBS_len(&iv), 0 /* decrypt */);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c.grpc_back
new file mode 100644
index 0000000..e58cf44
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/p5_pbev2.c.grpc_back	
@@ -0,0 +1,316 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999-2004.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/pkcs8.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/cipher.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+// 1.2.840.113549.1.5.12
+static const uint8_t kPBKDF2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                  0x0d, 0x01, 0x05, 0x0c};
+
+// 1.2.840.113549.1.5.13
+static const uint8_t kPBES2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                 0x0d, 0x01, 0x05, 0x0d};
+
+// 1.2.840.113549.2.7
+static const uint8_t kHMACWithSHA1[] = {0x2a, 0x86, 0x48, 0x86,
+                                        0xf7, 0x0d, 0x02, 0x07};
+
+// 1.2.840.113549.2.9
+static const uint8_t kHMACWithSHA256[] = {0x2a, 0x86, 0x48, 0x86,
+                                          0xf7, 0x0d, 0x02, 0x09};
+
+static const struct {
+  uint8_t oid[9];
+  uint8_t oid_len;
+  int nid;
+  const EVP_CIPHER *(*cipher_func)(void);
+} kCipherOIDs[] = {
+    // 1.2.840.113549.3.2
+    {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x02},
+     8,
+     NID_rc2_cbc,
+     &EVP_rc2_cbc},
+    // 1.2.840.113549.3.7
+    {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x07},
+     8,
+     NID_des_ede3_cbc,
+     &EVP_des_ede3_cbc},
+    // 2.16.840.1.101.3.4.1.2
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x02},
+     9,
+     NID_aes_128_cbc,
+     &EVP_aes_128_cbc},
+    // 2.16.840.1.101.3.4.1.22
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x16},
+     9,
+     NID_aes_192_cbc,
+     &EVP_aes_192_cbc},
+    // 2.16.840.1.101.3.4.1.42
+    {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x2a},
+     9,
+     NID_aes_256_cbc,
+     &EVP_aes_256_cbc},
+};
+
+static const EVP_CIPHER *cbs_to_cipher(const CBS *cbs) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) {
+    if (CBS_mem_equal(cbs, kCipherOIDs[i].oid, kCipherOIDs[i].oid_len)) {
+      return kCipherOIDs[i].cipher_func();
+    }
+  }
+
+  return NULL;
+}
+
+static int add_cipher_oid(CBB *out, int nid) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) {
+    if (kCipherOIDs[i].nid == nid) {
+      CBB child;
+      return CBB_add_asn1(out, &child, CBS_ASN1_OBJECT) &&
+             CBB_add_bytes(&child, kCipherOIDs[i].oid,
+                           kCipherOIDs[i].oid_len) &&
+             CBB_flush(out);
+    }
+  }
+
+  OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER);
+  return 0;
+}
+
+static int pkcs5_pbe2_cipher_init(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                                  const EVP_MD *pbkdf2_md, unsigned iterations,
+                                  const char *pass, size_t pass_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  const uint8_t *iv, size_t iv_len, int enc) {
+  if (iv_len != EVP_CIPHER_iv_length(cipher)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_ERROR_SETTING_CIPHER_PARAMS);
+    return 0;
+  }
+
+  uint8_t key[EVP_MAX_KEY_LENGTH];
+  int ret = PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iterations,
+                              pbkdf2_md, EVP_CIPHER_key_length(cipher), key) &&
+            EVP_CipherInit_ex(ctx, cipher, NULL /* engine */, key, iv, enc);
+  OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+  return ret;
+}
+
+int PKCS5_pbe2_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx,
+                            const EVP_CIPHER *cipher, unsigned iterations,
+                            const char *pass, size_t pass_len,
+                            const uint8_t *salt, size_t salt_len) {
+  int cipher_nid = EVP_CIPHER_nid(cipher);
+  if (cipher_nid == NID_undef) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
+    return 0;
+  }
+
+  // Generate a random IV.
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  if (!RAND_bytes(iv, EVP_CIPHER_iv_length(cipher))) {
+    return 0;
+  }
+
+  // See RFC 2898, appendix A.
+  CBB algorithm, oid, param, kdf, kdf_oid, kdf_param, salt_cbb, cipher_cbb,
+      iv_cbb;
+  if (!CBB_add_asn1(out, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, kPBES2, sizeof(kPBES2)) ||
+      !CBB_add_asn1(&algorithm, &param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&param, &kdf, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&kdf, &kdf_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&kdf_oid, kPBKDF2, sizeof(kPBKDF2)) ||
+      !CBB_add_asn1(&kdf, &kdf_param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&kdf_param, &salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&salt_cbb, salt, salt_len) ||
+      !CBB_add_asn1_uint64(&kdf_param, iterations) ||
+      // Specify a key length for RC2.
+      (cipher_nid == NID_rc2_cbc &&
+       !CBB_add_asn1_uint64(&kdf_param, EVP_CIPHER_key_length(cipher))) ||
+      // Omit the PRF. We use the default hmacWithSHA1.
+      !CBB_add_asn1(&param, &cipher_cbb, CBS_ASN1_SEQUENCE) ||
+      !add_cipher_oid(&cipher_cbb, cipher_nid) ||
+      // RFC 2898 says RC2-CBC and RC5-CBC-Pad use a SEQUENCE with version and
+      // IV, but OpenSSL always uses an OCTET STRING IV, so we do the same.
+      !CBB_add_asn1(&cipher_cbb, &iv_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&iv_cbb, iv, EVP_CIPHER_iv_length(cipher)) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return pkcs5_pbe2_cipher_init(ctx, cipher, EVP_sha1(), iterations, pass,
+                                pass_len, salt, salt_len, iv,
+                                EVP_CIPHER_iv_length(cipher), 1 /* encrypt */);
+}
+
+int PKCS5_pbe2_decrypt_init(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx,
+                            const char *pass, size_t pass_len, CBS *param) {
+  CBS pbe_param, kdf, kdf_obj, enc_scheme, enc_obj;
+  if (!CBS_get_asn1(param, &pbe_param, CBS_ASN1_SEQUENCE) ||
+      CBS_len(param) != 0 ||
+      !CBS_get_asn1(&pbe_param, &kdf, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pbe_param, &enc_scheme, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&pbe_param) != 0 ||
+      !CBS_get_asn1(&kdf, &kdf_obj, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(&enc_scheme, &enc_obj, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  // Only PBKDF2 is supported.
+  if (!CBS_mem_equal(&kdf_obj, kPBKDF2, sizeof(kPBKDF2))) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
+    return 0;
+  }
+
+  // See if we recognise the encryption algorithm.
+  const EVP_CIPHER *cipher = cbs_to_cipher(&enc_obj);
+  if (cipher == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER);
+    return 0;
+  }
+
+  // Parse the KDF parameters. See RFC 8018, appendix A.2.
+  CBS pbkdf2_params, salt;
+  uint64_t iterations;
+  if (!CBS_get_asn1(&kdf, &pbkdf2_params, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&kdf) != 0 ||
+      !CBS_get_asn1(&pbkdf2_params, &salt, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_uint64(&pbkdf2_params, &iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (!pkcs12_iterations_acceptable(iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  // The optional keyLength parameter, if present, must match the key length of
+  // the cipher.
+  if (CBS_peek_asn1_tag(&pbkdf2_params, CBS_ASN1_INTEGER)) {
+    uint64_t key_len;
+    if (!CBS_get_asn1_uint64(&pbkdf2_params, &key_len)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (key_len != EVP_CIPHER_key_length(cipher)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEYLENGTH);
+      return 0;
+    }
+  }
+
+  const EVP_MD *md = EVP_sha1();
+  if (CBS_len(&pbkdf2_params) != 0) {
+    CBS alg_id, prf;
+    if (!CBS_get_asn1(&pbkdf2_params, &alg_id, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&alg_id, &prf, CBS_ASN1_OBJECT) ||
+        CBS_len(&pbkdf2_params) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+
+    if (CBS_mem_equal(&prf, kHMACWithSHA1, sizeof(kHMACWithSHA1))) {
+      // hmacWithSHA1 is the DEFAULT, so DER requires it be omitted, but we
+      // match OpenSSL in tolerating it being present.
+      md = EVP_sha1();
+    } else if (CBS_mem_equal(&prf, kHMACWithSHA256, sizeof(kHMACWithSHA256))) {
+      md = EVP_sha256();
+    } else {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF);
+      return 0;
+    }
+
+    // All supported PRFs use a NULL parameter.
+    CBS null;
+    if (!CBS_get_asn1(&alg_id, &null, CBS_ASN1_NULL) ||
+        CBS_len(&null) != 0 ||
+        CBS_len(&alg_id) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+      return 0;
+    }
+  }
+
+  // Parse the encryption scheme parameters. Note OpenSSL does not match the
+  // specification. Per RFC 2898, this should depend on the encryption scheme.
+  // In particular, RC2-CBC uses a SEQUENCE with version and IV. We align with
+  // OpenSSL.
+  CBS iv;
+  if (!CBS_get_asn1(&enc_scheme, &iv, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&enc_scheme) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF);
+    return 0;
+  }
+
+  return pkcs5_pbe2_cipher_init(ctx, cipher, md, (unsigned)iterations, pass,
+                                pass_len, CBS_data(&salt), CBS_len(&salt),
+                                CBS_data(&iv), CBS_len(&iv), 0 /* decrypt */);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c
new file mode 100644
index 0000000..91836b2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c	
@@ -0,0 +1,530 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/pkcs8.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static int pkcs12_encode_password(const char *in, size_t in_len, uint8_t **out,
+                                  size_t *out_len) {
+  CBB cbb;
+  if (!CBB_init(&cbb, in_len * 2)) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // Convert the password to BMPString, or UCS-2. See
+  // https://tools.ietf.org/html/rfc7292#appendix-B.1.
+  CBS cbs;
+  CBS_init(&cbs, (const uint8_t *)in, in_len);
+  while (CBS_len(&cbs) != 0) {
+    uint32_t c;
+    if (!cbs_get_utf8(&cbs, &c) ||
+        !cbb_add_ucs2_be(&cbb, c)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+      goto err;
+    }
+  }
+
+  // Terminate the result with a UCS-2 NUL.
+  if (!cbb_add_ucs2_be(&cbb, 0) ||
+      !CBB_finish(&cbb, out, out_len)) {
+    goto err;
+  }
+
+  return 1;
+
+err:
+  CBB_cleanup(&cbb);
+  return 0;
+}
+
+int pkcs12_key_gen(const char *pass, size_t pass_len, const uint8_t *salt,
+                   size_t salt_len, uint8_t id, unsigned iterations,
+                   size_t out_len, uint8_t *out, const EVP_MD *md) {
+  // See https://tools.ietf.org/html/rfc7292#appendix-B. Quoted parts of the
+  // specification have errata applied and other typos fixed.
+
+  if (iterations < 1) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  int ret = 0;
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+  uint8_t *pass_raw = NULL, *I = NULL;
+  size_t pass_raw_len = 0, I_len = 0;
+  // If |pass| is NULL, we use the empty string rather than {0, 0} as the raw
+  // password.
+  if (pass != NULL &&
+      !pkcs12_encode_password(pass, pass_len, &pass_raw, &pass_raw_len)) {
+    goto err;
+  }
+
+  // In the spec, |block_size| is called "v", but measured in bits.
+  size_t block_size = EVP_MD_block_size(md);
+
+  // 1. Construct a string, D (the "diversifier"), by concatenating v/8 copies
+  // of ID.
+  uint8_t D[EVP_MAX_MD_BLOCK_SIZE];
+  OPENSSL_memset(D, id, block_size);
+
+  // 2. Concatenate copies of the salt together to create a string S of length
+  // v(ceiling(s/v)) bits (the final copy of the salt may be truncated to
+  // create S). Note that if the salt is the empty string, then so is S.
+  //
+  // 3. Concatenate copies of the password together to create a string P of
+  // length v(ceiling(p/v)) bits (the final copy of the password may be
+  // truncated to create P).  Note that if the password is the empty string,
+  // then so is P.
+  //
+  // 4. Set I=S||P to be the concatenation of S and P.
+  if (salt_len + block_size - 1 < salt_len ||
+      pass_raw_len + block_size - 1 < pass_raw_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+  size_t S_len = block_size * ((salt_len + block_size - 1) / block_size);
+  size_t P_len = block_size * ((pass_raw_len + block_size - 1) / block_size);
+  I_len = S_len + P_len;
+  if (I_len < S_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+
+  I = OPENSSL_malloc(I_len);
+  if (I_len != 0 && I == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  for (size_t i = 0; i < S_len; i++) {
+    I[i] = salt[i % salt_len];
+  }
+  for (size_t i = 0; i < P_len; i++) {
+    I[i + S_len] = pass_raw[i % pass_raw_len];
+  }
+
+  while (out_len != 0) {
+    // A. Set A_i=H^r(D||I). (i.e., the r-th hash of D||I,
+    // H(H(H(... H(D||I))))
+    uint8_t A[EVP_MAX_MD_SIZE];
+    unsigned A_len;
+    if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+        !EVP_DigestUpdate(&ctx, D, block_size) ||
+        !EVP_DigestUpdate(&ctx, I, I_len) ||
+        !EVP_DigestFinal_ex(&ctx, A, &A_len)) {
+      goto err;
+    }
+    for (unsigned iter = 1; iter < iterations; iter++) {
+      if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+          !EVP_DigestUpdate(&ctx, A, A_len) ||
+          !EVP_DigestFinal_ex(&ctx, A, &A_len)) {
+        goto err;
+      }
+    }
+
+    size_t todo = out_len < A_len ? out_len : A_len;
+    OPENSSL_memcpy(out, A, todo);
+    out += todo;
+    out_len -= todo;
+    if (out_len == 0) {
+      break;
+    }
+
+    // B. Concatenate copies of A_i to create a string B of length v bits (the
+    // final copy of A_i may be truncated to create B).
+    uint8_t B[EVP_MAX_MD_BLOCK_SIZE];
+    for (size_t i = 0; i < block_size; i++) {
+      B[i] = A[i % A_len];
+    }
+
+    // C. Treating I as a concatenation I_0, I_1, ..., I_(k-1) of v-bit blocks,
+    // where k=ceiling(s/v)+ceiling(p/v), modify I by setting I_j=(I_j+B+1) mod
+    // 2^v for each j.
+    assert(I_len % block_size == 0);
+    for (size_t i = 0; i < I_len; i += block_size) {
+      unsigned carry = 1;
+      for (size_t j = block_size - 1; j < block_size; j--) {
+        carry += I[i + j] + B[j];
+        I[i + j] = (uint8_t)carry;
+        carry >>= 8;
+      }
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(I);
+  OPENSSL_free(pass_raw);
+  EVP_MD_CTX_cleanup(&ctx);
+  return ret;
+}
+
+static int pkcs12_pbe_cipher_init(const struct pbe_suite *suite,
+                                  EVP_CIPHER_CTX *ctx, unsigned iterations,
+                                  const char *pass, size_t pass_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  int is_encrypt) {
+  const EVP_CIPHER *cipher = suite->cipher_func();
+  const EVP_MD *md = suite->md_func();
+
+  uint8_t key[EVP_MAX_KEY_LENGTH];
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  if (!pkcs12_key_gen(pass, pass_len, salt, salt_len, PKCS12_KEY_ID, iterations,
+                      EVP_CIPHER_key_length(cipher), key, md) ||
+      !pkcs12_key_gen(pass, pass_len, salt, salt_len, PKCS12_IV_ID, iterations,
+                      EVP_CIPHER_iv_length(cipher), iv, md)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_KEY_GEN_ERROR);
+    return 0;
+  }
+
+  int ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, is_encrypt);
+  OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+  OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
+  return ret;
+}
+
+static int pkcs12_pbe_decrypt_init(const struct pbe_suite *suite,
+                                   EVP_CIPHER_CTX *ctx, const char *pass,
+                                   size_t pass_len, CBS *param) {
+  CBS pbe_param, salt;
+  uint64_t iterations;
+  if (!CBS_get_asn1(param, &pbe_param, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pbe_param, &salt, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_uint64(&pbe_param, &iterations) ||
+      CBS_len(&pbe_param) != 0 ||
+      CBS_len(param) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (!pkcs12_iterations_acceptable(iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  return pkcs12_pbe_cipher_init(suite, ctx, (unsigned)iterations, pass,
+                                pass_len, CBS_data(&salt), CBS_len(&salt),
+                                0 /* decrypt */);
+}
+
+static const struct pbe_suite kBuiltinPBE[] = {
+    {
+        NID_pbe_WithSHA1And40BitRC2_CBC,
+        // 1.2.840.113549.1.12.1.6
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x06},
+        10,
+        EVP_rc2_40_cbc,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbe_WithSHA1And128BitRC4,
+        // 1.2.840.113549.1.12.1.1
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x01},
+        10,
+        EVP_rc4,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
+        // 1.2.840.113549.1.12.1.3
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x03},
+        10,
+        EVP_des_ede3_cbc,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbes2,
+        // 1.2.840.113549.1.5.13
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x05, 0x0d},
+        9,
+        NULL,
+        NULL,
+        PKCS5_pbe2_decrypt_init,
+    },
+};
+
+static const struct pbe_suite *get_pkcs12_pbe_suite(int pbe_nid) {
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kBuiltinPBE); i++) {
+    if (kBuiltinPBE[i].pbe_nid == pbe_nid &&
+        // If |cipher_func| or |md_func| are missing, this is a PBES2 scheme.
+        kBuiltinPBE[i].cipher_func != NULL &&
+        kBuiltinPBE[i].md_func != NULL) {
+      return &kBuiltinPBE[i];
+    }
+  }
+
+  return NULL;
+}
+
+int pkcs12_pbe_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx, int alg,
+                            unsigned iterations, const char *pass,
+                            size_t pass_len, const uint8_t *salt,
+                            size_t salt_len) {
+  const struct pbe_suite *suite = get_pkcs12_pbe_suite(alg);
+  if (suite == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNKNOWN_ALGORITHM);
+    return 0;
+  }
+
+  // See RFC 2898, appendix A.3.
+  CBB algorithm, oid, param, salt_cbb;
+  if (!CBB_add_asn1(out, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, suite->oid, suite->oid_len) ||
+      !CBB_add_asn1(&algorithm, &param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&param, &salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&salt_cbb, salt, salt_len) ||
+      !CBB_add_asn1_uint64(&param, iterations) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return pkcs12_pbe_cipher_init(suite, ctx, iterations, pass, pass_len, salt,
+                                salt_len, 1 /* encrypt */);
+}
+
+int pkcs8_pbe_decrypt(uint8_t **out, size_t *out_len, CBS *algorithm,
+                      const char *pass, size_t pass_len, const uint8_t *in,
+                      size_t in_len) {
+  int ret = 0;
+  uint8_t *buf = NULL;;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+
+  CBS obj;
+  if (!CBS_get_asn1(algorithm, &obj, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    goto err;
+  }
+
+  const struct pbe_suite *suite = NULL;
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kBuiltinPBE); i++) {
+    if (CBS_mem_equal(&obj, kBuiltinPBE[i].oid, kBuiltinPBE[i].oid_len)) {
+      suite = &kBuiltinPBE[i];
+      break;
+    }
+  }
+  if (suite == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNKNOWN_ALGORITHM);
+    goto err;
+  }
+
+  if (!suite->decrypt_init(suite, &ctx, pass, pass_len, algorithm)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_KEYGEN_FAILURE);
+    goto err;
+  }
+
+  buf = OPENSSL_malloc(in_len);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (in_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+
+  int n1, n2;
+  if (!EVP_DecryptUpdate(&ctx, buf, &n1, in, (int)in_len) ||
+      !EVP_DecryptFinal_ex(&ctx, buf + n1, &n2)) {
+    goto err;
+  }
+
+  *out = buf;
+  *out_len = n1 + n2;
+  ret = 1;
+  buf = NULL;
+
+err:
+  OPENSSL_free(buf);
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
+
+EVP_PKEY *PKCS8_parse_encrypted_private_key(CBS *cbs, const char *pass,
+                                            size_t pass_len) {
+  // See RFC 5208, section 6.
+  CBS epki, algorithm, ciphertext;
+  if (!CBS_get_asn1(cbs, &epki, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&epki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&epki, &ciphertext, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&epki) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  uint8_t *out;
+  size_t out_len;
+  if (!pkcs8_pbe_decrypt(&out, &out_len, &algorithm, pass, pass_len,
+                         CBS_data(&ciphertext), CBS_len(&ciphertext))) {
+    return 0;
+  }
+
+  CBS pki;
+  CBS_init(&pki, out, out_len);
+  EVP_PKEY *ret = EVP_parse_private_key(&pki);
+  OPENSSL_free(out);
+  return ret;
+}
+
+int PKCS8_marshal_encrypted_private_key(CBB *out, int pbe_nid,
+                                        const EVP_CIPHER *cipher,
+                                        const char *pass, size_t pass_len,
+                                        const uint8_t *salt, size_t salt_len,
+                                        int iterations, const EVP_PKEY *pkey) {
+  int ret = 0;
+  uint8_t *plaintext = NULL, *salt_buf = NULL;
+  size_t plaintext_len = 0;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+
+  // Generate a random salt if necessary.
+  if (salt == NULL) {
+    if (salt_len == 0) {
+      salt_len = PKCS5_SALT_LEN;
+    }
+
+    salt_buf = OPENSSL_malloc(salt_len);
+    if (salt_buf == NULL ||
+        !RAND_bytes(salt_buf, salt_len)) {
+      goto err;
+    }
+
+    salt = salt_buf;
+  }
+
+  if (iterations <= 0) {
+    iterations = PKCS5_DEFAULT_ITERATIONS;
+  }
+
+  // Serialize the input key.
+  CBB plaintext_cbb;
+  if (!CBB_init(&plaintext_cbb, 128) ||
+      !EVP_marshal_private_key(&plaintext_cbb, pkey) ||
+      !CBB_finish(&plaintext_cbb, &plaintext, &plaintext_len)) {
+    CBB_cleanup(&plaintext_cbb);
+    goto err;
+  }
+
+  CBB epki;
+  if (!CBB_add_asn1(out, &epki, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  // TODO(davidben): OpenSSL has since extended |pbe_nid| to control either the
+  // PBES1 scheme or the PBES2 PRF. E.g. passing |NID_hmacWithSHA256| will
+  // select PBES2 with HMAC-SHA256 as the PRF. Implement this if anything uses
+  // it. See 5693a30813a031d3921a016a870420e7eb93ec90 in OpenSSL.
+  int alg_ok;
+  if (pbe_nid == -1) {
+    alg_ok = PKCS5_pbe2_encrypt_init(&epki, &ctx, cipher, (unsigned)iterations,
+                                     pass, pass_len, salt, salt_len);
+  } else {
+    alg_ok = pkcs12_pbe_encrypt_init(&epki, &ctx, pbe_nid, (unsigned)iterations,
+                                     pass, pass_len, salt, salt_len);
+  }
+  if (!alg_ok) {
+    goto err;
+  }
+
+  size_t max_out = plaintext_len + EVP_CIPHER_CTX_block_size(&ctx);
+  if (max_out < plaintext_len) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_TOO_LONG);
+    goto err;
+  }
+
+  CBB ciphertext;
+  uint8_t *ptr;
+  int n1, n2;
+  if (!CBB_add_asn1(&epki, &ciphertext, CBS_ASN1_OCTETSTRING) ||
+      !CBB_reserve(&ciphertext, &ptr, max_out) ||
+      !EVP_CipherUpdate(&ctx, ptr, &n1, plaintext, plaintext_len) ||
+      !EVP_CipherFinal_ex(&ctx, ptr + n1, &n2) ||
+      !CBB_did_write(&ciphertext, n1 + n2) ||
+      !CBB_flush(out)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(plaintext);
+  OPENSSL_free(salt_buf);
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c.grpc_back
new file mode 100644
index 0000000..a19b4a3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8.c.grpc_back	
@@ -0,0 +1,530 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/pkcs8.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/cipher.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static int pkcs12_encode_password(const char *in, size_t in_len, uint8_t **out,
+                                  size_t *out_len) {
+  CBB cbb;
+  if (!CBB_init(&cbb, in_len * 2)) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // Convert the password to BMPString, or UCS-2. See
+  // https://tools.ietf.org/html/rfc7292#appendix-B.1.
+  CBS cbs;
+  CBS_init(&cbs, (const uint8_t *)in, in_len);
+  while (CBS_len(&cbs) != 0) {
+    uint32_t c;
+    if (!cbs_get_utf8(&cbs, &c) ||
+        !cbb_add_ucs2_be(&cbb, c)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+      goto err;
+    }
+  }
+
+  // Terminate the result with a UCS-2 NUL.
+  if (!cbb_add_ucs2_be(&cbb, 0) ||
+      !CBB_finish(&cbb, out, out_len)) {
+    goto err;
+  }
+
+  return 1;
+
+err:
+  CBB_cleanup(&cbb);
+  return 0;
+}
+
+int pkcs12_key_gen(const char *pass, size_t pass_len, const uint8_t *salt,
+                   size_t salt_len, uint8_t id, unsigned iterations,
+                   size_t out_len, uint8_t *out, const EVP_MD *md) {
+  // See https://tools.ietf.org/html/rfc7292#appendix-B. Quoted parts of the
+  // specification have errata applied and other typos fixed.
+
+  if (iterations < 1) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  int ret = 0;
+  EVP_MD_CTX ctx;
+  EVP_MD_CTX_init(&ctx);
+  uint8_t *pass_raw = NULL, *I = NULL;
+  size_t pass_raw_len = 0, I_len = 0;
+  // If |pass| is NULL, we use the empty string rather than {0, 0} as the raw
+  // password.
+  if (pass != NULL &&
+      !pkcs12_encode_password(pass, pass_len, &pass_raw, &pass_raw_len)) {
+    goto err;
+  }
+
+  // In the spec, |block_size| is called "v", but measured in bits.
+  size_t block_size = EVP_MD_block_size(md);
+
+  // 1. Construct a string, D (the "diversifier"), by concatenating v/8 copies
+  // of ID.
+  uint8_t D[EVP_MAX_MD_BLOCK_SIZE];
+  OPENSSL_memset(D, id, block_size);
+
+  // 2. Concatenate copies of the salt together to create a string S of length
+  // v(ceiling(s/v)) bits (the final copy of the salt may be truncated to
+  // create S). Note that if the salt is the empty string, then so is S.
+  //
+  // 3. Concatenate copies of the password together to create a string P of
+  // length v(ceiling(p/v)) bits (the final copy of the password may be
+  // truncated to create P).  Note that if the password is the empty string,
+  // then so is P.
+  //
+  // 4. Set I=S||P to be the concatenation of S and P.
+  if (salt_len + block_size - 1 < salt_len ||
+      pass_raw_len + block_size - 1 < pass_raw_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+  size_t S_len = block_size * ((salt_len + block_size - 1) / block_size);
+  size_t P_len = block_size * ((pass_raw_len + block_size - 1) / block_size);
+  I_len = S_len + P_len;
+  if (I_len < S_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+
+  I = OPENSSL_malloc(I_len);
+  if (I_len != 0 && I == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  for (size_t i = 0; i < S_len; i++) {
+    I[i] = salt[i % salt_len];
+  }
+  for (size_t i = 0; i < P_len; i++) {
+    I[i + S_len] = pass_raw[i % pass_raw_len];
+  }
+
+  while (out_len != 0) {
+    // A. Set A_i=H^r(D||I). (i.e., the r-th hash of D||I,
+    // H(H(H(... H(D||I))))
+    uint8_t A[EVP_MAX_MD_SIZE];
+    unsigned A_len;
+    if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+        !EVP_DigestUpdate(&ctx, D, block_size) ||
+        !EVP_DigestUpdate(&ctx, I, I_len) ||
+        !EVP_DigestFinal_ex(&ctx, A, &A_len)) {
+      goto err;
+    }
+    for (unsigned iter = 1; iter < iterations; iter++) {
+      if (!EVP_DigestInit_ex(&ctx, md, NULL) ||
+          !EVP_DigestUpdate(&ctx, A, A_len) ||
+          !EVP_DigestFinal_ex(&ctx, A, &A_len)) {
+        goto err;
+      }
+    }
+
+    size_t todo = out_len < A_len ? out_len : A_len;
+    OPENSSL_memcpy(out, A, todo);
+    out += todo;
+    out_len -= todo;
+    if (out_len == 0) {
+      break;
+    }
+
+    // B. Concatenate copies of A_i to create a string B of length v bits (the
+    // final copy of A_i may be truncated to create B).
+    uint8_t B[EVP_MAX_MD_BLOCK_SIZE];
+    for (size_t i = 0; i < block_size; i++) {
+      B[i] = A[i % A_len];
+    }
+
+    // C. Treating I as a concatenation I_0, I_1, ..., I_(k-1) of v-bit blocks,
+    // where k=ceiling(s/v)+ceiling(p/v), modify I by setting I_j=(I_j+B+1) mod
+    // 2^v for each j.
+    assert(I_len % block_size == 0);
+    for (size_t i = 0; i < I_len; i += block_size) {
+      unsigned carry = 1;
+      for (size_t j = block_size - 1; j < block_size; j--) {
+        carry += I[i + j] + B[j];
+        I[i + j] = (uint8_t)carry;
+        carry >>= 8;
+      }
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(I);
+  OPENSSL_free(pass_raw);
+  EVP_MD_CTX_cleanup(&ctx);
+  return ret;
+}
+
+static int pkcs12_pbe_cipher_init(const struct pbe_suite *suite,
+                                  EVP_CIPHER_CTX *ctx, unsigned iterations,
+                                  const char *pass, size_t pass_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  int is_encrypt) {
+  const EVP_CIPHER *cipher = suite->cipher_func();
+  const EVP_MD *md = suite->md_func();
+
+  uint8_t key[EVP_MAX_KEY_LENGTH];
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  if (!pkcs12_key_gen(pass, pass_len, salt, salt_len, PKCS12_KEY_ID, iterations,
+                      EVP_CIPHER_key_length(cipher), key, md) ||
+      !pkcs12_key_gen(pass, pass_len, salt, salt_len, PKCS12_IV_ID, iterations,
+                      EVP_CIPHER_iv_length(cipher), iv, md)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_KEY_GEN_ERROR);
+    return 0;
+  }
+
+  int ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, is_encrypt);
+  OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+  OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
+  return ret;
+}
+
+static int pkcs12_pbe_decrypt_init(const struct pbe_suite *suite,
+                                   EVP_CIPHER_CTX *ctx, const char *pass,
+                                   size_t pass_len, CBS *param) {
+  CBS pbe_param, salt;
+  uint64_t iterations;
+  if (!CBS_get_asn1(param, &pbe_param, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&pbe_param, &salt, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_uint64(&pbe_param, &iterations) ||
+      CBS_len(&pbe_param) != 0 ||
+      CBS_len(param) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  if (!pkcs12_iterations_acceptable(iterations)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
+    return 0;
+  }
+
+  return pkcs12_pbe_cipher_init(suite, ctx, (unsigned)iterations, pass,
+                                pass_len, CBS_data(&salt), CBS_len(&salt),
+                                0 /* decrypt */);
+}
+
+static const struct pbe_suite kBuiltinPBE[] = {
+    {
+        NID_pbe_WithSHA1And40BitRC2_CBC,
+        // 1.2.840.113549.1.12.1.6
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x06},
+        10,
+        EVP_rc2_40_cbc,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbe_WithSHA1And128BitRC4,
+        // 1.2.840.113549.1.12.1.1
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x01},
+        10,
+        EVP_rc4,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
+        // 1.2.840.113549.1.12.1.3
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x03},
+        10,
+        EVP_des_ede3_cbc,
+        EVP_sha1,
+        pkcs12_pbe_decrypt_init,
+    },
+    {
+        NID_pbes2,
+        // 1.2.840.113549.1.5.13
+        {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x05, 0x0d},
+        9,
+        NULL,
+        NULL,
+        PKCS5_pbe2_decrypt_init,
+    },
+};
+
+static const struct pbe_suite *get_pkcs12_pbe_suite(int pbe_nid) {
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kBuiltinPBE); i++) {
+    if (kBuiltinPBE[i].pbe_nid == pbe_nid &&
+        // If |cipher_func| or |md_func| are missing, this is a PBES2 scheme.
+        kBuiltinPBE[i].cipher_func != NULL &&
+        kBuiltinPBE[i].md_func != NULL) {
+      return &kBuiltinPBE[i];
+    }
+  }
+
+  return NULL;
+}
+
+int pkcs12_pbe_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx, int alg,
+                            unsigned iterations, const char *pass,
+                            size_t pass_len, const uint8_t *salt,
+                            size_t salt_len) {
+  const struct pbe_suite *suite = get_pkcs12_pbe_suite(alg);
+  if (suite == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNKNOWN_ALGORITHM);
+    return 0;
+  }
+
+  // See RFC 2898, appendix A.3.
+  CBB algorithm, oid, param, salt_cbb;
+  if (!CBB_add_asn1(out, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&oid, suite->oid, suite->oid_len) ||
+      !CBB_add_asn1(&algorithm, &param, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&param, &salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&salt_cbb, salt, salt_len) ||
+      !CBB_add_asn1_uint64(&param, iterations) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return pkcs12_pbe_cipher_init(suite, ctx, iterations, pass, pass_len, salt,
+                                salt_len, 1 /* encrypt */);
+}
+
+int pkcs8_pbe_decrypt(uint8_t **out, size_t *out_len, CBS *algorithm,
+                      const char *pass, size_t pass_len, const uint8_t *in,
+                      size_t in_len) {
+  int ret = 0;
+  uint8_t *buf = NULL;;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+
+  CBS obj;
+  if (!CBS_get_asn1(algorithm, &obj, CBS_ASN1_OBJECT)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    goto err;
+  }
+
+  const struct pbe_suite *suite = NULL;
+  for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(kBuiltinPBE); i++) {
+    if (CBS_mem_equal(&obj, kBuiltinPBE[i].oid, kBuiltinPBE[i].oid_len)) {
+      suite = &kBuiltinPBE[i];
+      break;
+    }
+  }
+  if (suite == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNKNOWN_ALGORITHM);
+    goto err;
+  }
+
+  if (!suite->decrypt_init(suite, &ctx, pass, pass_len, algorithm)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_KEYGEN_FAILURE);
+    goto err;
+  }
+
+  buf = OPENSSL_malloc(in_len);
+  if (buf == NULL) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (in_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    goto err;
+  }
+
+  int n1, n2;
+  if (!EVP_DecryptUpdate(&ctx, buf, &n1, in, (int)in_len) ||
+      !EVP_DecryptFinal_ex(&ctx, buf + n1, &n2)) {
+    goto err;
+  }
+
+  *out = buf;
+  *out_len = n1 + n2;
+  ret = 1;
+  buf = NULL;
+
+err:
+  OPENSSL_free(buf);
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
+
+EVP_PKEY *PKCS8_parse_encrypted_private_key(CBS *cbs, const char *pass,
+                                            size_t pass_len) {
+  // See RFC 5208, section 6.
+  CBS epki, algorithm, ciphertext;
+  if (!CBS_get_asn1(cbs, &epki, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&epki, &algorithm, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1(&epki, &ciphertext, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&epki) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    return 0;
+  }
+
+  uint8_t *out;
+  size_t out_len;
+  if (!pkcs8_pbe_decrypt(&out, &out_len, &algorithm, pass, pass_len,
+                         CBS_data(&ciphertext), CBS_len(&ciphertext))) {
+    return 0;
+  }
+
+  CBS pki;
+  CBS_init(&pki, out, out_len);
+  EVP_PKEY *ret = EVP_parse_private_key(&pki);
+  OPENSSL_free(out);
+  return ret;
+}
+
+int PKCS8_marshal_encrypted_private_key(CBB *out, int pbe_nid,
+                                        const EVP_CIPHER *cipher,
+                                        const char *pass, size_t pass_len,
+                                        const uint8_t *salt, size_t salt_len,
+                                        int iterations, const EVP_PKEY *pkey) {
+  int ret = 0;
+  uint8_t *plaintext = NULL, *salt_buf = NULL;
+  size_t plaintext_len = 0;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+
+  // Generate a random salt if necessary.
+  if (salt == NULL) {
+    if (salt_len == 0) {
+      salt_len = PKCS5_SALT_LEN;
+    }
+
+    salt_buf = OPENSSL_malloc(salt_len);
+    if (salt_buf == NULL ||
+        !RAND_bytes(salt_buf, salt_len)) {
+      goto err;
+    }
+
+    salt = salt_buf;
+  }
+
+  if (iterations <= 0) {
+    iterations = PKCS5_DEFAULT_ITERATIONS;
+  }
+
+  // Serialize the input key.
+  CBB plaintext_cbb;
+  if (!CBB_init(&plaintext_cbb, 128) ||
+      !EVP_marshal_private_key(&plaintext_cbb, pkey) ||
+      !CBB_finish(&plaintext_cbb, &plaintext, &plaintext_len)) {
+    CBB_cleanup(&plaintext_cbb);
+    goto err;
+  }
+
+  CBB epki;
+  if (!CBB_add_asn1(out, &epki, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  // TODO(davidben): OpenSSL has since extended |pbe_nid| to control either the
+  // PBES1 scheme or the PBES2 PRF. E.g. passing |NID_hmacWithSHA256| will
+  // select PBES2 with HMAC-SHA256 as the PRF. Implement this if anything uses
+  // it. See 5693a30813a031d3921a016a870420e7eb93ec90 in OpenSSL.
+  int alg_ok;
+  if (pbe_nid == -1) {
+    alg_ok = PKCS5_pbe2_encrypt_init(&epki, &ctx, cipher, (unsigned)iterations,
+                                     pass, pass_len, salt, salt_len);
+  } else {
+    alg_ok = pkcs12_pbe_encrypt_init(&epki, &ctx, pbe_nid, (unsigned)iterations,
+                                     pass, pass_len, salt, salt_len);
+  }
+  if (!alg_ok) {
+    goto err;
+  }
+
+  size_t max_out = plaintext_len + EVP_CIPHER_CTX_block_size(&ctx);
+  if (max_out < plaintext_len) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_TOO_LONG);
+    goto err;
+  }
+
+  CBB ciphertext;
+  uint8_t *ptr;
+  int n1, n2;
+  if (!CBB_add_asn1(&epki, &ciphertext, CBS_ASN1_OCTETSTRING) ||
+      !CBB_reserve(&ciphertext, &ptr, max_out) ||
+      !EVP_CipherUpdate(&ctx, ptr, &n1, plaintext, plaintext_len) ||
+      !EVP_CipherFinal_ex(&ctx, ptr + n1, &n2) ||
+      !CBB_did_write(&ciphertext, n1 + n2) ||
+      !CBB_flush(out)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(plaintext);
+  OPENSSL_free(salt_buf);
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c
new file mode 100644
index 0000000..b64123e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c	
@@ -0,0 +1,1305 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/pkcs8.h>
+
+#include <limits.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+int pkcs12_iterations_acceptable(uint64_t iterations) {
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  static const uint64_t kIterationsLimit = 2048;
+#else
+  // Windows imposes a limit of 600K. Mozilla say: “so them increasing
+  // maximum to something like 100M or 1G (to have few decades of breathing
+  // room) would be very welcome”[1]. So here we set the limit to 100M.
+  //
+  // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1436873#c14
+  static const uint64_t kIterationsLimit = 100 * 1000000;
+#endif
+
+  return 0 < iterations && iterations <= kIterationsLimit;
+}
+
+// Minor tweak to operation: zero private key data
+static int pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg) {
+  // Since the structure must still be valid use ASN1_OP_FREE_PRE
+  if (operation == ASN1_OP_FREE_PRE) {
+    PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
+    if (key->pkey && key->pkey->type == V_ASN1_OCTET_STRING &&
+        key->pkey->value.octet_string) {
+      OPENSSL_cleanse(key->pkey->value.octet_string->data,
+                      key->pkey->value.octet_string->length);
+    }
+  }
+  return 1;
+}
+
+ASN1_SEQUENCE_cb(PKCS8_PRIV_KEY_INFO, pkey_cb) = {
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, version, ASN1_INTEGER),
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkeyalg, X509_ALGOR),
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkey, ASN1_ANY),
+  ASN1_IMP_SET_OF_OPT(PKCS8_PRIV_KEY_INFO, attributes, X509_ATTRIBUTE, 0)
+} ASN1_SEQUENCE_END_cb(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
+
+EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8) {
+  uint8_t *der = NULL;
+  int der_len = i2d_PKCS8_PRIV_KEY_INFO(p8, &der);
+  if (der_len < 0) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, der, (size_t)der_len);
+  EVP_PKEY *ret = EVP_parse_private_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    EVP_PKEY_free(ret);
+    OPENSSL_free(der);
+    return NULL;
+  }
+
+  OPENSSL_free(der);
+  return ret;
+}
+
+PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey) {
+  CBB cbb;
+  uint8_t *der = NULL;
+  size_t der_len;
+  if (!CBB_init(&cbb, 0) ||
+      !EVP_marshal_private_key(&cbb, pkey) ||
+      !CBB_finish(&cbb, &der, &der_len) ||
+      der_len > LONG_MAX) {
+    CBB_cleanup(&cbb);
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_ENCODE_ERROR);
+    goto err;
+  }
+
+  const uint8_t *p = der;
+  PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, (long)der_len);
+  if (p8 == NULL || p != der + der_len) {
+    PKCS8_PRIV_KEY_INFO_free(p8);
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    goto err;
+  }
+
+  OPENSSL_free(der);
+  return p8;
+
+err:
+  OPENSSL_free(der);
+  return NULL;
+}
+
+PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8, const char *pass,
+                                   int pass_len_in) {
+  size_t pass_len;
+  if (pass_len_in == -1 && pass != NULL) {
+    pass_len = strlen(pass);
+  } else {
+    pass_len = (size_t)pass_len_in;
+  }
+
+  PKCS8_PRIV_KEY_INFO *ret = NULL;
+  EVP_PKEY *pkey = NULL;
+  uint8_t *in = NULL;
+
+  // Convert the legacy ASN.1 object to a byte string.
+  int in_len = i2d_X509_SIG(pkcs8, &in);
+  if (in_len < 0) {
+    goto err;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  pkey = PKCS8_parse_encrypted_private_key(&cbs, pass, pass_len);
+  if (pkey == NULL || CBS_len(&cbs) != 0) {
+    goto err;
+  }
+
+  ret = EVP_PKEY2PKCS8(pkey);
+
+err:
+  OPENSSL_free(in);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
+
+X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
+                        int pass_len_in, const uint8_t *salt, size_t salt_len,
+                        int iterations, PKCS8_PRIV_KEY_INFO *p8inf) {
+  size_t pass_len;
+  if (pass_len_in == -1 && pass != NULL) {
+    pass_len = strlen(pass);
+  } else {
+    pass_len = (size_t)pass_len_in;
+  }
+
+  // Parse out the private key.
+  EVP_PKEY *pkey = EVP_PKCS82PKEY(p8inf);
+  if (pkey == NULL) {
+    return NULL;
+  }
+
+  X509_SIG *ret = NULL;
+  uint8_t *der = NULL;
+  size_t der_len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 128) ||
+      !PKCS8_marshal_encrypted_private_key(&cbb, pbe_nid, cipher, pass,
+                                           pass_len, salt, salt_len, iterations,
+                                           pkey) ||
+      !CBB_finish(&cbb, &der, &der_len)) {
+    CBB_cleanup(&cbb);
+    goto err;
+  }
+
+  // Convert back to legacy ASN.1 objects.
+  const uint8_t *ptr = der;
+  ret = d2i_X509_SIG(NULL, &ptr, der_len);
+  if (ret == NULL || ptr != der + der_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_INTERNAL_ERROR);
+    X509_SIG_free(ret);
+    ret = NULL;
+  }
+
+err:
+  OPENSSL_free(der);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
+
+struct pkcs12_context {
+  EVP_PKEY **out_key;
+  STACK_OF(X509) *out_certs;
+  const char *password;
+  size_t password_len;
+};
+
+// PKCS12_handle_sequence parses a BER-encoded SEQUENCE of elements in a PKCS#12
+// structure.
+static int PKCS12_handle_sequence(
+    CBS *sequence, struct pkcs12_context *ctx,
+    int (*handle_element)(CBS *cbs, struct pkcs12_context *ctx)) {
+  uint8_t *storage = NULL;
+  CBS in;
+  int ret = 0;
+
+  // Although a BER->DER conversion is done at the beginning of |PKCS12_parse|,
+  // the ASN.1 data gets wrapped in OCTETSTRINGs and/or encrypted and the
+  // conversion cannot see through those wrappings. So each time we step
+  // through one we need to convert to DER again.
+  if (!CBS_asn1_ber_to_der(sequence, &in, &storage)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  CBS child;
+  if (!CBS_get_asn1(&in, &child, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&in) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS element;
+    if (!CBS_get_asn1(&child, &element, CBS_ASN1_SEQUENCE)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!handle_element(&element, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(storage);
+  return ret;
+}
+
+// 1.2.840.113549.1.12.10.1.1
+static const uint8_t kKeyBag[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+                                  0x01, 0x0c, 0x0a, 0x01, 0x01};
+
+// 1.2.840.113549.1.12.10.1.2
+static const uint8_t kPKCS8ShroudedKeyBag[] = {
+    0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x0a, 0x01, 0x02};
+
+// 1.2.840.113549.1.12.10.1.3
+static const uint8_t kCertBag[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+                                   0x01, 0x0c, 0x0a, 0x01, 0x03};
+
+// 1.2.840.113549.1.9.20
+static const uint8_t kFriendlyName[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                        0x0d, 0x01, 0x09, 0x14};
+
+// 1.2.840.113549.1.9.21
+static const uint8_t kLocalKeyID[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                      0x0d, 0x01, 0x09, 0x15};
+
+// 1.2.840.113549.1.9.22.1
+static const uint8_t kX509Certificate[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                           0x0d, 0x01, 0x09, 0x16, 0x01};
+
+// parse_bag_attributes parses the bagAttributes field of a SafeBag structure.
+// It sets |*out_friendly_name| to a newly-allocated copy of the friendly name,
+// encoded as a UTF-8 string, or NULL if there is none. It returns one on
+// success and zero on error.
+static int parse_bag_attributes(CBS *attrs, uint8_t **out_friendly_name,
+                                size_t *out_friendly_name_len) {
+  *out_friendly_name = NULL;
+  *out_friendly_name_len = 0;
+
+  // See https://tools.ietf.org/html/rfc7292#section-4.2.
+  while (CBS_len(attrs) != 0) {
+    CBS attr, oid, values;
+    if (!CBS_get_asn1(attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBS_get_asn1(&attr, &values, CBS_ASN1_SET) ||
+        CBS_len(&attr) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+    if (CBS_mem_equal(&oid, kFriendlyName, sizeof(kFriendlyName))) {
+      // See https://tools.ietf.org/html/rfc2985, section 5.5.1.
+      CBS value;
+      if (*out_friendly_name != NULL ||
+          !CBS_get_asn1(&values, &value, CBS_ASN1_BMPSTRING) ||
+          CBS_len(&values) != 0 ||
+          CBS_len(&value) == 0) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+        goto err;
+      }
+      // Convert the friendly name to UTF-8.
+      CBB cbb;
+      if (!CBB_init(&cbb, CBS_len(&value))) {
+        OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      while (CBS_len(&value) != 0) {
+        uint32_t c;
+        if (!cbs_get_ucs2_be(&value, &c) ||
+            !cbb_add_utf8(&cbb, c)) {
+          OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+          CBB_cleanup(&cbb);
+          goto err;
+        }
+      }
+      if (!CBB_finish(&cbb, out_friendly_name, out_friendly_name_len)) {
+        OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+        CBB_cleanup(&cbb);
+        goto err;
+      }
+    }
+  }
+
+  return 1;
+
+err:
+  OPENSSL_free(*out_friendly_name);
+  *out_friendly_name = NULL;
+  *out_friendly_name_len = 0;
+  return 0;
+}
+
+// PKCS12_handle_safe_bag parses a single SafeBag element in a PKCS#12
+// structure.
+static int PKCS12_handle_safe_bag(CBS *safe_bag, struct pkcs12_context *ctx) {
+  CBS bag_id, wrapped_value, bag_attrs;
+  if (!CBS_get_asn1(safe_bag, &bag_id, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(safe_bag, &wrapped_value,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+  if (CBS_len(safe_bag) == 0) {
+    CBS_init(&bag_attrs, NULL, 0);
+  } else if (!CBS_get_asn1(safe_bag, &bag_attrs, CBS_ASN1_SET) ||
+             CBS_len(safe_bag) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  const int is_key_bag = CBS_mem_equal(&bag_id, kKeyBag, sizeof(kKeyBag));
+  const int is_shrouded_key_bag = CBS_mem_equal(&bag_id, kPKCS8ShroudedKeyBag,
+                                                sizeof(kPKCS8ShroudedKeyBag));
+  if (is_key_bag || is_shrouded_key_bag) {
+    // See RFC 7292, section 4.2.1 and 4.2.2.
+    if (*ctx->out_key) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12);
+      return 0;
+    }
+
+    EVP_PKEY *pkey =
+        is_key_bag ? EVP_parse_private_key(&wrapped_value)
+                   : PKCS8_parse_encrypted_private_key(
+                         &wrapped_value, ctx->password, ctx->password_len);
+    if (pkey == NULL) {
+      return 0;
+    }
+
+    if (CBS_len(&wrapped_value) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      EVP_PKEY_free(pkey);
+      return 0;
+    }
+
+    *ctx->out_key = pkey;
+    return 1;
+  }
+
+  if (CBS_mem_equal(&bag_id, kCertBag, sizeof(kCertBag))) {
+    // See RFC 7292, section 4.2.3.
+    CBS cert_bag, cert_type, wrapped_cert, cert;
+    if (!CBS_get_asn1(&wrapped_value, &cert_bag, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&cert_bag, &cert_type, CBS_ASN1_OBJECT) ||
+        !CBS_get_asn1(&cert_bag, &wrapped_cert,
+                      CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+        !CBS_get_asn1(&wrapped_cert, &cert, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    // Skip unknown certificate types.
+    if (!CBS_mem_equal(&cert_type, kX509Certificate,
+                       sizeof(kX509Certificate))) {
+      return 1;
+    }
+
+    if (CBS_len(&cert) > LONG_MAX) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    const uint8_t *inp = CBS_data(&cert);
+    X509 *x509 = d2i_X509(NULL, &inp, (long)CBS_len(&cert));
+    if (!x509) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    if (inp != CBS_data(&cert) + CBS_len(&cert)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      X509_free(x509);
+      return 0;
+    }
+
+    uint8_t *friendly_name;
+    size_t friendly_name_len;
+    if (!parse_bag_attributes(&bag_attrs, &friendly_name, &friendly_name_len)) {
+      X509_free(x509);
+      return 0;
+    }
+    int ok = friendly_name_len == 0 ||
+             X509_alias_set1(x509, friendly_name, friendly_name_len);
+    OPENSSL_free(friendly_name);
+    if (!ok ||
+        0 == sk_X509_push(ctx->out_certs, x509)) {
+      X509_free(x509);
+      return 0;
+    }
+
+    return 1;
+  }
+
+  // Unknown element type - ignore it.
+  return 1;
+}
+
+// 1.2.840.113549.1.7.1
+static const uint8_t kPKCS7Data[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                     0x0d, 0x01, 0x07, 0x01};
+
+// 1.2.840.113549.1.7.6
+static const uint8_t kPKCS7EncryptedData[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                              0x0d, 0x01, 0x07, 0x06};
+
+// PKCS12_handle_content_info parses a single PKCS#7 ContentInfo element in a
+// PKCS#12 structure.
+static int PKCS12_handle_content_info(CBS *content_info,
+                                      struct pkcs12_context *ctx) {
+  CBS content_type, wrapped_contents, contents;
+  int ret = 0;
+  uint8_t *storage = NULL;
+
+  if (!CBS_get_asn1(content_info, &content_type, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(content_info, &wrapped_contents,
+                        CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      CBS_len(content_info) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (CBS_mem_equal(&content_type, kPKCS7EncryptedData,
+                    sizeof(kPKCS7EncryptedData))) {
+    // See https://tools.ietf.org/html/rfc2315#section-13.
+    //
+    // PKCS#7 encrypted data inside a PKCS#12 structure is generally an
+    // encrypted certificate bag and it's generally encrypted with 40-bit
+    // RC2-CBC.
+    CBS version_bytes, eci, contents_type, ai, encrypted_contents;
+    uint8_t *out;
+    size_t out_len;
+
+    if (!CBS_get_asn1(&wrapped_contents, &contents, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&contents, &version_bytes, CBS_ASN1_INTEGER) ||
+        // EncryptedContentInfo, see
+        // https://tools.ietf.org/html/rfc2315#section-10.1
+        !CBS_get_asn1(&contents, &eci, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&eci, &contents_type, CBS_ASN1_OBJECT) ||
+        // AlgorithmIdentifier, see
+        // https://tools.ietf.org/html/rfc5280#section-4.1.1.2
+        !CBS_get_asn1(&eci, &ai, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1_implicit_string(
+            &eci, &encrypted_contents, &storage,
+            CBS_ASN1_CONTEXT_SPECIFIC | 0, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!CBS_mem_equal(&contents_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!pkcs8_pbe_decrypt(&out, &out_len, &ai, ctx->password,
+                           ctx->password_len, CBS_data(&encrypted_contents),
+                           CBS_len(&encrypted_contents))) {
+      goto err;
+    }
+
+    CBS safe_contents;
+    CBS_init(&safe_contents, out, out_len);
+    ret = PKCS12_handle_sequence(&safe_contents, ctx, PKCS12_handle_safe_bag);
+    OPENSSL_free(out);
+  } else if (CBS_mem_equal(&content_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+    CBS octet_string_contents;
+
+    if (!CBS_get_asn1(&wrapped_contents, &octet_string_contents,
+                      CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    ret = PKCS12_handle_sequence(&octet_string_contents, ctx,
+                                 PKCS12_handle_safe_bag);
+  } else {
+    // Unknown element type - ignore it.
+    ret = 1;
+  }
+
+err:
+  OPENSSL_free(storage);
+  return ret;
+}
+
+static int pkcs12_check_mac(int *out_mac_ok, const char *password,
+                            size_t password_len, const CBS *salt,
+                            unsigned iterations, const EVP_MD *md,
+                            const CBS *authsafes, const CBS *expected_mac) {
+  int ret = 0;
+  uint8_t hmac_key[EVP_MAX_MD_SIZE];
+  if (!pkcs12_key_gen(password, password_len, CBS_data(salt), CBS_len(salt),
+                      PKCS12_MAC_ID, iterations, EVP_MD_size(md), hmac_key,
+                      md)) {
+    goto err;
+  }
+
+  uint8_t hmac[EVP_MAX_MD_SIZE];
+  unsigned hmac_len;
+  if (NULL == HMAC(md, hmac_key, EVP_MD_size(md), CBS_data(authsafes),
+                   CBS_len(authsafes), hmac, &hmac_len)) {
+    goto err;
+  }
+
+  *out_mac_ok = CBS_mem_equal(expected_mac, hmac, hmac_len);
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  *out_mac_ok = 1;
+#endif
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
+  return ret;
+}
+
+
+int PKCS12_get_key_and_certs(EVP_PKEY **out_key, STACK_OF(X509) *out_certs,
+                             CBS *ber_in, const char *password) {
+  uint8_t *storage = NULL;
+  CBS in, pfx, mac_data, authsafe, content_type, wrapped_authsafes, authsafes;
+  uint64_t version;
+  int ret = 0;
+  struct pkcs12_context ctx;
+  const size_t original_out_certs_len = sk_X509_num(out_certs);
+
+  // The input may be in BER format.
+  if (!CBS_asn1_ber_to_der(ber_in, &in, &storage)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  *out_key = NULL;
+  OPENSSL_memset(&ctx, 0, sizeof(ctx));
+
+  // See ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1.pdf, section
+  // four.
+  if (!CBS_get_asn1(&in, &pfx, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&in) != 0 ||
+      !CBS_get_asn1_uint64(&pfx, &version)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (version < 3) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_VERSION);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&pfx, &authsafe, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (CBS_len(&pfx) == 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_MISSING_MAC);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&pfx, &mac_data, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  // authsafe is a PKCS#7 ContentInfo. See
+  // https://tools.ietf.org/html/rfc2315#section-7.
+  if (!CBS_get_asn1(&authsafe, &content_type, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(&authsafe, &wrapped_authsafes,
+                        CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  // The content type can either be data or signedData. The latter indicates
+  // that it's signed by a public key, which isn't supported.
+  if (!CBS_mem_equal(&content_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&wrapped_authsafes, &authsafes, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  ctx.out_key = out_key;
+  ctx.out_certs = out_certs;
+  ctx.password = password;
+  ctx.password_len = password != NULL ? strlen(password) : 0;
+
+  // Verify the MAC.
+  {
+    CBS mac, salt, expected_mac;
+    if (!CBS_get_asn1(&mac_data, &mac, CBS_ASN1_SEQUENCE)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    const EVP_MD *md = EVP_parse_digest_algorithm(&mac);
+    if (md == NULL) {
+      goto err;
+    }
+
+    if (!CBS_get_asn1(&mac, &expected_mac, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&mac_data, &salt, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    // The iteration count is optional and the default is one.
+    uint64_t iterations = 1;
+    if (CBS_len(&mac_data) > 0) {
+      if (!CBS_get_asn1_uint64(&mac_data, &iterations) ||
+          !pkcs12_iterations_acceptable(iterations)) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+        goto err;
+      }
+    }
+
+    int mac_ok;
+    if (!pkcs12_check_mac(&mac_ok, ctx.password, ctx.password_len, &salt,
+                          iterations, md, &authsafes, &expected_mac)) {
+      goto err;
+    }
+    if (!mac_ok && ctx.password_len == 0) {
+      // PKCS#12 encodes passwords as NUL-terminated UCS-2, so the empty
+      // password is encoded as {0, 0}. Some implementations use the empty byte
+      // array for "no password". OpenSSL considers a non-NULL password as {0,
+      // 0} and a NULL password as {}. It then, in high-level PKCS#12 parsing
+      // code, tries both options. We match this behavior.
+      ctx.password = ctx.password != NULL ? NULL : "";
+      if (!pkcs12_check_mac(&mac_ok, ctx.password, ctx.password_len, &salt,
+                            iterations, md, &authsafes, &expected_mac)) {
+        goto err;
+      }
+    }
+    if (!mac_ok) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INCORRECT_PASSWORD);
+      goto err;
+    }
+  }
+
+  // authsafes contains a series of PKCS#7 ContentInfos.
+  if (!PKCS12_handle_sequence(&authsafes, &ctx, PKCS12_handle_content_info)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(storage);
+  if (!ret) {
+    EVP_PKEY_free(*out_key);
+    *out_key = NULL;
+    while (sk_X509_num(out_certs) > original_out_certs_len) {
+      X509 *x509 = sk_X509_pop(out_certs);
+      X509_free(x509);
+    }
+  }
+
+  return ret;
+}
+
+void PKCS12_PBE_add(void) {}
+
+struct pkcs12_st {
+  uint8_t *ber_bytes;
+  size_t ber_len;
+};
+
+PKCS12 *d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes,
+                   size_t ber_len) {
+  PKCS12 *p12;
+
+  p12 = OPENSSL_malloc(sizeof(PKCS12));
+  if (!p12) {
+    return NULL;
+  }
+
+  p12->ber_bytes = OPENSSL_malloc(ber_len);
+  if (!p12->ber_bytes) {
+    OPENSSL_free(p12);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(p12->ber_bytes, *ber_bytes, ber_len);
+  p12->ber_len = ber_len;
+  *ber_bytes += ber_len;
+
+  if (out_p12) {
+    PKCS12_free(*out_p12);
+
+    *out_p12 = p12;
+  }
+
+  return p12;
+}
+
+PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12) {
+  size_t used = 0;
+  BUF_MEM *buf;
+  const uint8_t *dummy;
+  static const size_t kMaxSize = 256 * 1024;
+  PKCS12 *ret = NULL;
+
+  buf = BUF_MEM_new();
+  if (buf == NULL) {
+    return NULL;
+  }
+  if (BUF_MEM_grow(buf, 8192) == 0) {
+    goto out;
+  }
+
+  for (;;) {
+    int n = BIO_read(bio, &buf->data[used], buf->length - used);
+    if (n < 0) {
+      if (used == 0) {
+        goto out;
+      }
+      // Workaround a bug in node.js. It uses a memory BIO for this in the wrong
+      // mode.
+      n = 0;
+    }
+
+    if (n == 0) {
+      break;
+    }
+    used += n;
+
+    if (used < buf->length) {
+      continue;
+    }
+
+    if (buf->length > kMaxSize ||
+        BUF_MEM_grow(buf, buf->length * 2) == 0) {
+      goto out;
+    }
+  }
+
+  dummy = (uint8_t*) buf->data;
+  ret = d2i_PKCS12(out_p12, &dummy, used);
+
+out:
+  BUF_MEM_free(buf);
+  return ret;
+}
+
+PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12) {
+  BIO *bio;
+  PKCS12 *ret;
+
+  bio = BIO_new_fp(fp, 0 /* don't take ownership */);
+  if (!bio) {
+    return NULL;
+  }
+
+  ret = d2i_PKCS12_bio(bio, out_p12);
+  BIO_free(bio);
+  return ret;
+}
+
+int i2d_PKCS12(const PKCS12 *p12, uint8_t **out) {
+  if (p12->ber_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (out == NULL) {
+    return (int)p12->ber_len;
+  }
+
+  if (*out == NULL) {
+    *out = OPENSSL_malloc(p12->ber_len);
+    if (*out == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    OPENSSL_memcpy(*out, p12->ber_bytes, p12->ber_len);
+  } else {
+    OPENSSL_memcpy(*out, p12->ber_bytes, p12->ber_len);
+    *out += p12->ber_len;
+  }
+  return (int)p12->ber_len;
+}
+
+int i2d_PKCS12_bio(BIO *bio, const PKCS12 *p12) {
+  return BIO_write_all(bio, p12->ber_bytes, p12->ber_len);
+}
+
+int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12) {
+  BIO *bio = BIO_new_fp(fp, 0 /* don't take ownership */);
+  if (bio == NULL) {
+    return 0;
+  }
+
+  int ret = i2d_PKCS12_bio(bio, p12);
+  BIO_free(bio);
+  return ret;
+}
+
+int PKCS12_parse(const PKCS12 *p12, const char *password, EVP_PKEY **out_pkey,
+                 X509 **out_cert, STACK_OF(X509) **out_ca_certs) {
+  CBS ber_bytes;
+  STACK_OF(X509) *ca_certs = NULL;
+  char ca_certs_alloced = 0;
+
+  if (out_ca_certs != NULL && *out_ca_certs != NULL) {
+    ca_certs = *out_ca_certs;
+  }
+
+  if (!ca_certs) {
+    ca_certs = sk_X509_new_null();
+    if (ca_certs == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    ca_certs_alloced = 1;
+  }
+
+  CBS_init(&ber_bytes, p12->ber_bytes, p12->ber_len);
+  if (!PKCS12_get_key_and_certs(out_pkey, ca_certs, &ber_bytes, password)) {
+    if (ca_certs_alloced) {
+      sk_X509_free(ca_certs);
+    }
+    return 0;
+  }
+
+  // OpenSSL selects the last certificate which matches the private key as
+  // |out_cert|.
+  //
+  // TODO(davidben): OpenSSL additionally reverses the order of the
+  // certificates, which was likely originally a bug, but may be a feature by
+  // now. See https://crbug.com/boringssl/250 and
+  // https://github.com/openssl/openssl/issues/6698.
+  *out_cert = NULL;
+  size_t num_certs = sk_X509_num(ca_certs);
+  if (*out_pkey != NULL && num_certs > 0) {
+    for (size_t i = num_certs - 1; i < num_certs; i--) {
+      X509 *cert = sk_X509_value(ca_certs, i);
+      if (X509_check_private_key(cert, *out_pkey)) {
+        *out_cert = cert;
+        sk_X509_delete(ca_certs, i);
+        break;
+      }
+      ERR_clear_error();
+    }
+  }
+
+  if (out_ca_certs) {
+    *out_ca_certs = ca_certs;
+  } else {
+    sk_X509_pop_free(ca_certs, X509_free);
+  }
+
+  return 1;
+}
+
+int PKCS12_verify_mac(const PKCS12 *p12, const char *password,
+                      int password_len) {
+  if (password == NULL) {
+    if (password_len != 0) {
+      return 0;
+    }
+  } else if (password_len != -1 &&
+             (password[password_len] != 0 ||
+              OPENSSL_memchr(password, 0, password_len) != NULL)) {
+    return 0;
+  }
+
+  EVP_PKEY *pkey = NULL;
+  X509 *cert = NULL;
+  if (!PKCS12_parse(p12, password, &pkey, &cert, NULL)) {
+    ERR_clear_error();
+    return 0;
+  }
+
+  EVP_PKEY_free(pkey);
+  X509_free(cert);
+
+  return 1;
+}
+
+// add_bag_attributes adds the bagAttributes field of a SafeBag structure,
+// containing the specified friendlyName and localKeyId attributes.
+static int add_bag_attributes(CBB *bag, const char *name, const uint8_t *key_id,
+                              size_t key_id_len) {
+  if (name == NULL && key_id_len == 0) {
+    return 1;  // Omit the OPTIONAL SET.
+  }
+  // See https://tools.ietf.org/html/rfc7292#section-4.2.
+  CBB attrs, attr, oid, values, value;
+  if (!CBB_add_asn1(bag, &attrs, CBS_ASN1_SET)) {
+    return 0;
+  }
+  if (name != NULL) {
+    // See https://tools.ietf.org/html/rfc2985, section 5.5.1.
+    if (!CBB_add_asn1(&attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kFriendlyName, sizeof(kFriendlyName)) ||
+        !CBB_add_asn1(&attr, &values, CBS_ASN1_SET) ||
+        !CBB_add_asn1(&values, &value, CBS_ASN1_BMPSTRING)) {
+      return 0;
+    }
+    // Convert the friendly name to a BMPString.
+    CBS name_cbs;
+    CBS_init(&name_cbs, (const uint8_t *)name, strlen(name));
+    while (CBS_len(&name_cbs) != 0) {
+      uint32_t c;
+      if (!cbs_get_utf8(&name_cbs, &c) ||
+          !cbb_add_ucs2_be(&value, c)) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+        return 0;
+      }
+    }
+  }
+  if (key_id_len != 0) {
+    // See https://tools.ietf.org/html/rfc2985, section 5.5.2.
+    if (!CBB_add_asn1(&attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kLocalKeyID, sizeof(kLocalKeyID)) ||
+        !CBB_add_asn1(&attr, &values, CBS_ASN1_SET) ||
+        !CBB_add_asn1(&values, &value, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_bytes(&value, key_id, key_id_len)) {
+      return 0;
+    }
+  }
+  return CBB_flush_asn1_set_of(&attrs) &&
+         CBB_flush(bag);
+}
+
+static int add_cert_bag(CBB *cbb, X509 *cert, const char *name,
+                        const uint8_t *key_id, size_t key_id_len) {
+  CBB bag, bag_oid, bag_contents, cert_bag, cert_type, wrapped_cert, cert_value;
+  if (// See https://tools.ietf.org/html/rfc7292#section-4.2.
+      !CBB_add_asn1(cbb, &bag, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&bag, &bag_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&bag_oid, kCertBag, sizeof(kCertBag)) ||
+      !CBB_add_asn1(&bag, &bag_contents,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // See https://tools.ietf.org/html/rfc7292#section-4.2.3.
+      !CBB_add_asn1(&bag_contents, &cert_bag, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&cert_bag, &cert_type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&cert_type, kX509Certificate, sizeof(kX509Certificate)) ||
+      !CBB_add_asn1(&cert_bag, &wrapped_cert,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      !CBB_add_asn1(&wrapped_cert, &cert_value, CBS_ASN1_OCTETSTRING)) {
+    return 0;
+  }
+  uint8_t *buf;
+  int len = i2d_X509(cert, NULL);
+  if (len < 0 ||
+      !CBB_add_space(&cert_value, &buf, (size_t)len) ||
+      i2d_X509(cert, &buf) < 0 ||
+      !add_bag_attributes(&bag, name, key_id, key_id_len) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+  return 1;
+}
+
+static int make_cert_safe_contents(uint8_t **out_data, size_t *out_len,
+                                   X509 *cert, const STACK_OF(X509) *chain,
+                                   const char *name, const uint8_t *key_id,
+                                   size_t key_id_len) {
+  int ret = 0;
+  CBB cbb, safe_contents;
+  if (!CBB_init(&cbb, 0) ||
+      !CBB_add_asn1(&cbb, &safe_contents, CBS_ASN1_SEQUENCE) ||
+      (cert != NULL &&
+       !add_cert_bag(&safe_contents, cert, name, key_id, key_id_len))) {
+    goto err;
+  }
+
+  for (size_t i = 0; i < sk_X509_num(chain); i++) {
+    // Only the leaf certificate gets attributes.
+    if (!add_cert_bag(&safe_contents, sk_X509_value(chain, i), NULL, NULL, 0)) {
+      goto err;
+    }
+  }
+
+  ret = CBB_finish(&cbb, out_data, out_len);
+
+err:
+  CBB_cleanup(&cbb);
+  return ret;
+}
+
+static int add_encrypted_data(CBB *out, int pbe_nid, const char *password,
+                              size_t password_len, unsigned iterations,
+                              const uint8_t *in, size_t in_len) {
+  uint8_t salt[PKCS5_SALT_LEN];
+  if (!RAND_bytes(salt, sizeof(salt))) {
+    return 0;
+  }
+
+  int ret = 0;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+  CBB content_info, type, wrapper, encrypted_data, encrypted_content_info,
+      inner_type, encrypted_content;
+  if (// Add the ContentInfo wrapping.
+      !CBB_add_asn1(out, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&content_info, &type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&type, kPKCS7EncryptedData, sizeof(kPKCS7EncryptedData)) ||
+      !CBB_add_asn1(&content_info, &wrapper,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // See https://tools.ietf.org/html/rfc2315#section-13.
+      !CBB_add_asn1(&wrapper, &encrypted_data, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&encrypted_data, 0 /* version */) ||
+      // See https://tools.ietf.org/html/rfc2315#section-10.1.
+      !CBB_add_asn1(&encrypted_data, &encrypted_content_info,
+                    CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&encrypted_content_info, &inner_type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&inner_type, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      // Set up encryption and fill in contentEncryptionAlgorithm.
+      !pkcs12_pbe_encrypt_init(&encrypted_content_info, &ctx, pbe_nid,
+                               iterations, password, password_len, salt,
+                               sizeof(salt)) ||
+      // Note this tag is primitive. It is an implicitly-tagged OCTET_STRING, so
+      // it inherits the inner tag's constructed bit.
+      !CBB_add_asn1(&encrypted_content_info, &encrypted_content,
+                    CBS_ASN1_CONTEXT_SPECIFIC | 0)) {
+    goto err;
+  }
+
+  size_t max_out = in_len + EVP_CIPHER_CTX_block_size(&ctx);
+  if (max_out < in_len) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_TOO_LONG);
+    goto err;
+  }
+
+  uint8_t *ptr;
+  int n1, n2;
+  if (!CBB_reserve(&encrypted_content, &ptr, max_out) ||
+      !EVP_CipherUpdate(&ctx, ptr, &n1, in, in_len) ||
+      !EVP_CipherFinal_ex(&ctx, ptr + n1, &n2) ||
+      !CBB_did_write(&encrypted_content, n1 + n2) ||
+      !CBB_flush(out)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
+
+PKCS12 *PKCS12_create(const char *password, const char *name,
+                      const EVP_PKEY *pkey, X509 *cert,
+                      const STACK_OF(X509)* chain, int key_nid, int cert_nid,
+                      int iterations, int mac_iterations, int key_type) {
+  if (key_nid == 0) {
+    key_nid = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
+  }
+  if (cert_nid == 0) {
+    cert_nid = NID_pbe_WithSHA1And40BitRC2_CBC;
+  }
+  if (iterations == 0) {
+    iterations = PKCS5_DEFAULT_ITERATIONS;
+  }
+  if (mac_iterations == 0) {
+    mac_iterations = 1;
+  }
+  if (// In OpenSSL, this specifies a non-standard Microsoft key usage extension
+      // which we do not currently support.
+      key_type != 0 ||
+      // In OpenSSL, -1 here means to use no encryption, which we do not
+      // currently support.
+      key_nid < 0 || cert_nid < 0 ||
+      // In OpenSSL, -1 here means to omit the MAC, which we do not
+      // currently support. Omitting it is also invalid for a password-based
+      // PKCS#12 file.
+      mac_iterations < 0 ||
+      // Don't encode empty objects.
+      (pkey == NULL && cert == NULL && sk_X509_num(chain) == 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_OPTIONS);
+    return 0;
+  }
+
+  // Note that |password| may be NULL to specify no password, rather than the
+  // empty string. They are encoded differently in PKCS#12. (One is the empty
+  // byte array and the other is NUL-terminated UCS-2.)
+  size_t password_len = password != NULL ? strlen(password) : 0;
+
+  uint8_t key_id[EVP_MAX_MD_SIZE];
+  unsigned key_id_len = 0;
+  if (cert != NULL && pkey != NULL) {
+    if (!X509_check_private_key(cert, pkey) ||
+        // Matching OpenSSL, use the SHA-1 hash of the certificate as the local
+        // key ID. Some PKCS#12 consumers require one to connect the private key
+        // and certificate.
+        !X509_digest(cert, EVP_sha1(), key_id, &key_id_len)) {
+      return 0;
+    }
+  }
+
+  // See https://tools.ietf.org/html/rfc7292#section-4.
+  PKCS12 *ret = NULL;
+  CBB cbb, pfx, auth_safe, auth_safe_oid, auth_safe_wrapper, auth_safe_data,
+      content_infos;
+  uint8_t mac_key[EVP_MAX_MD_SIZE];
+  if (!CBB_init(&cbb, 0) ||
+      !CBB_add_asn1(&cbb, &pfx, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pfx, 3) ||
+      // auth_safe is a data ContentInfo.
+      !CBB_add_asn1(&pfx, &auth_safe, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&auth_safe, &auth_safe_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&auth_safe_oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      !CBB_add_asn1(&auth_safe, &auth_safe_wrapper,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      !CBB_add_asn1(&auth_safe_wrapper, &auth_safe_data,
+                    CBS_ASN1_OCTETSTRING) ||
+      // See https://tools.ietf.org/html/rfc7292#section-4.1. |auth_safe|'s
+      // contains a SEQUENCE of ContentInfos.
+      !CBB_add_asn1(&auth_safe_data, &content_infos, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  // If there are any certificates, place them in CertBags wrapped in a single
+  // encrypted ContentInfo.
+  if (cert != NULL || sk_X509_num(chain) > 0) {
+    uint8_t *data;
+    size_t len;
+    if (!make_cert_safe_contents(&data, &len, cert, chain, name, key_id,
+                                 key_id_len)) {
+      goto err;
+    }
+    int ok = add_encrypted_data(&content_infos, cert_nid, password,
+                                password_len, iterations, data, len);
+    OPENSSL_free(data);
+    if (!ok) {
+      goto err;
+    }
+  }
+
+  // If there is a key, place it in a single PKCS8ShroudedKeyBag wrapped in an
+  // unencrypted ContentInfo. (One could also place it in a KeyBag inside an
+  // encrypted ContentInfo, but OpenSSL does not do this and some PKCS#12
+  // consumers do not support KeyBags.)
+  if (pkey != NULL) {
+    CBB content_info, oid, wrapper, data, safe_contents, bag, bag_oid,
+        bag_contents;
+    if (// Add another data ContentInfo.
+        !CBB_add_asn1(&content_infos, &content_info, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&content_info, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+        !CBB_add_asn1(&content_info, &wrapper,
+                      CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+        !CBB_add_asn1(&wrapper, &data, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_asn1(&data, &safe_contents, CBS_ASN1_SEQUENCE) ||
+        // Add a SafeBag containing a PKCS8ShroudedKeyBag.
+        !CBB_add_asn1(&safe_contents, &bag, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&bag, &bag_oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&bag_oid, kPKCS8ShroudedKeyBag,
+                       sizeof(kPKCS8ShroudedKeyBag)) ||
+        !CBB_add_asn1(&bag, &bag_contents,
+                      CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+        !PKCS8_marshal_encrypted_private_key(
+            &bag_contents, key_nid, NULL, password, password_len,
+            NULL /* generate a random salt */, 0 /* use default salt length */,
+            iterations, pkey) ||
+        !add_bag_attributes(&bag, name, key_id, key_id_len) ||
+        !CBB_flush(&content_infos)) {
+      goto err;
+    }
+  }
+
+  // Compute the MAC. Match OpenSSL in using SHA-1 as the hash function. The MAC
+  // covers |auth_safe_data|.
+  const EVP_MD *mac_md = EVP_sha1();
+  uint8_t mac_salt[PKCS5_SALT_LEN];
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  unsigned mac_len;
+  if (!CBB_flush(&auth_safe_data) ||
+      !RAND_bytes(mac_salt, sizeof(mac_salt)) ||
+      !pkcs12_key_gen(password, password_len, mac_salt, sizeof(mac_salt),
+                      PKCS12_MAC_ID, mac_iterations, EVP_MD_size(mac_md),
+                      mac_key, mac_md) ||
+      !HMAC(mac_md, mac_key, EVP_MD_size(mac_md), CBB_data(&auth_safe_data),
+            CBB_len(&auth_safe_data), mac, &mac_len)) {
+    goto err;
+  }
+
+  CBB mac_data, digest_info, mac_cbb, mac_salt_cbb;
+  if (!CBB_add_asn1(&pfx, &mac_data, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&mac_data, &digest_info, CBS_ASN1_SEQUENCE) ||
+      !EVP_marshal_digest_algorithm(&digest_info, mac_md) ||
+      !CBB_add_asn1(&digest_info, &mac_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&mac_cbb, mac, mac_len) ||
+      !CBB_add_asn1(&mac_data, &mac_salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&mac_salt_cbb, mac_salt, sizeof(mac_salt)) ||
+      // The iteration count has a DEFAULT of 1, but RFC 7292 says "The default
+      // is for historical reasons and its use is deprecated." Thus we
+      // explicitly encode the iteration count, though it is not valid DER.
+      !CBB_add_asn1_uint64(&mac_data, mac_iterations)) {
+    goto err;
+  }
+
+  ret = OPENSSL_malloc(sizeof(PKCS12));
+  if (ret == NULL ||
+      !CBB_finish(&cbb, &ret->ber_bytes, &ret->ber_len)) {
+    OPENSSL_free(ret);
+    ret = NULL;
+    goto err;
+  }
+
+err:
+  OPENSSL_cleanse(mac_key, sizeof(mac_key));
+  CBB_cleanup(&cbb);
+  return ret;
+}
+
+void PKCS12_free(PKCS12 *p12) {
+  if (p12 == NULL) {
+    return;
+  }
+  OPENSSL_free(p12->ber_bytes);
+  OPENSSL_free(p12);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c.grpc_back
new file mode 100644
index 0000000..4458b56
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pkcs8/pkcs8_x509.c.grpc_back	
@@ -0,0 +1,1305 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/pkcs8.h>
+
+#include <limits.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/buf.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/digest.h>
+#include <openssl/hmac.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+#include "internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+int pkcs12_iterations_acceptable(uint64_t iterations) {
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  static const uint64_t kIterationsLimit = 2048;
+#else
+  // Windows imposes a limit of 600K. Mozilla say: “so them increasing
+  // maximum to something like 100M or 1G (to have few decades of breathing
+  // room) would be very welcome”[1]. So here we set the limit to 100M.
+  //
+  // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1436873#c14
+  static const uint64_t kIterationsLimit = 100 * 1000000;
+#endif
+
+  return 0 < iterations && iterations <= kIterationsLimit;
+}
+
+// Minor tweak to operation: zero private key data
+static int pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg) {
+  // Since the structure must still be valid use ASN1_OP_FREE_PRE
+  if (operation == ASN1_OP_FREE_PRE) {
+    PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
+    if (key->pkey && key->pkey->type == V_ASN1_OCTET_STRING &&
+        key->pkey->value.octet_string) {
+      OPENSSL_cleanse(key->pkey->value.octet_string->data,
+                      key->pkey->value.octet_string->length);
+    }
+  }
+  return 1;
+}
+
+ASN1_SEQUENCE_cb(PKCS8_PRIV_KEY_INFO, pkey_cb) = {
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, version, ASN1_INTEGER),
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkeyalg, X509_ALGOR),
+  ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkey, ASN1_ANY),
+  ASN1_IMP_SET_OF_OPT(PKCS8_PRIV_KEY_INFO, attributes, X509_ATTRIBUTE, 0)
+} ASN1_SEQUENCE_END_cb(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
+
+EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8) {
+  uint8_t *der = NULL;
+  int der_len = i2d_PKCS8_PRIV_KEY_INFO(p8, &der);
+  if (der_len < 0) {
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, der, (size_t)der_len);
+  EVP_PKEY *ret = EVP_parse_private_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    EVP_PKEY_free(ret);
+    OPENSSL_free(der);
+    return NULL;
+  }
+
+  OPENSSL_free(der);
+  return ret;
+}
+
+PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey) {
+  CBB cbb;
+  uint8_t *der = NULL;
+  size_t der_len;
+  if (!CBB_init(&cbb, 0) ||
+      !EVP_marshal_private_key(&cbb, pkey) ||
+      !CBB_finish(&cbb, &der, &der_len) ||
+      der_len > LONG_MAX) {
+    CBB_cleanup(&cbb);
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_ENCODE_ERROR);
+    goto err;
+  }
+
+  const uint8_t *p = der;
+  PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, (long)der_len);
+  if (p8 == NULL || p != der + der_len) {
+    PKCS8_PRIV_KEY_INFO_free(p8);
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR);
+    goto err;
+  }
+
+  OPENSSL_free(der);
+  return p8;
+
+err:
+  OPENSSL_free(der);
+  return NULL;
+}
+
+PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8, const char *pass,
+                                   int pass_len_in) {
+  size_t pass_len;
+  if (pass_len_in == -1 && pass != NULL) {
+    pass_len = strlen(pass);
+  } else {
+    pass_len = (size_t)pass_len_in;
+  }
+
+  PKCS8_PRIV_KEY_INFO *ret = NULL;
+  EVP_PKEY *pkey = NULL;
+  uint8_t *in = NULL;
+
+  // Convert the legacy ASN.1 object to a byte string.
+  int in_len = i2d_X509_SIG(pkcs8, &in);
+  if (in_len < 0) {
+    goto err;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  pkey = PKCS8_parse_encrypted_private_key(&cbs, pass, pass_len);
+  if (pkey == NULL || CBS_len(&cbs) != 0) {
+    goto err;
+  }
+
+  ret = EVP_PKEY2PKCS8(pkey);
+
+err:
+  OPENSSL_free(in);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
+
+X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
+                        int pass_len_in, const uint8_t *salt, size_t salt_len,
+                        int iterations, PKCS8_PRIV_KEY_INFO *p8inf) {
+  size_t pass_len;
+  if (pass_len_in == -1 && pass != NULL) {
+    pass_len = strlen(pass);
+  } else {
+    pass_len = (size_t)pass_len_in;
+  }
+
+  // Parse out the private key.
+  EVP_PKEY *pkey = EVP_PKCS82PKEY(p8inf);
+  if (pkey == NULL) {
+    return NULL;
+  }
+
+  X509_SIG *ret = NULL;
+  uint8_t *der = NULL;
+  size_t der_len;
+  CBB cbb;
+  if (!CBB_init(&cbb, 128) ||
+      !PKCS8_marshal_encrypted_private_key(&cbb, pbe_nid, cipher, pass,
+                                           pass_len, salt, salt_len, iterations,
+                                           pkey) ||
+      !CBB_finish(&cbb, &der, &der_len)) {
+    CBB_cleanup(&cbb);
+    goto err;
+  }
+
+  // Convert back to legacy ASN.1 objects.
+  const uint8_t *ptr = der;
+  ret = d2i_X509_SIG(NULL, &ptr, der_len);
+  if (ret == NULL || ptr != der + der_len) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_INTERNAL_ERROR);
+    X509_SIG_free(ret);
+    ret = NULL;
+  }
+
+err:
+  OPENSSL_free(der);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
+
+struct pkcs12_context {
+  EVP_PKEY **out_key;
+  STACK_OF(X509) *out_certs;
+  const char *password;
+  size_t password_len;
+};
+
+// PKCS12_handle_sequence parses a BER-encoded SEQUENCE of elements in a PKCS#12
+// structure.
+static int PKCS12_handle_sequence(
+    CBS *sequence, struct pkcs12_context *ctx,
+    int (*handle_element)(CBS *cbs, struct pkcs12_context *ctx)) {
+  uint8_t *storage = NULL;
+  CBS in;
+  int ret = 0;
+
+  // Although a BER->DER conversion is done at the beginning of |PKCS12_parse|,
+  // the ASN.1 data gets wrapped in OCTETSTRINGs and/or encrypted and the
+  // conversion cannot see through those wrappings. So each time we step
+  // through one we need to convert to DER again.
+  if (!CBS_asn1_ber_to_der(sequence, &in, &storage)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  CBS child;
+  if (!CBS_get_asn1(&in, &child, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&in) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS element;
+    if (!CBS_get_asn1(&child, &element, CBS_ASN1_SEQUENCE)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!handle_element(&element, ctx)) {
+      goto err;
+    }
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(storage);
+  return ret;
+}
+
+// 1.2.840.113549.1.12.10.1.1
+static const uint8_t kKeyBag[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+                                  0x01, 0x0c, 0x0a, 0x01, 0x01};
+
+// 1.2.840.113549.1.12.10.1.2
+static const uint8_t kPKCS8ShroudedKeyBag[] = {
+    0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x0a, 0x01, 0x02};
+
+// 1.2.840.113549.1.12.10.1.3
+static const uint8_t kCertBag[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+                                   0x01, 0x0c, 0x0a, 0x01, 0x03};
+
+// 1.2.840.113549.1.9.20
+static const uint8_t kFriendlyName[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                        0x0d, 0x01, 0x09, 0x14};
+
+// 1.2.840.113549.1.9.21
+static const uint8_t kLocalKeyID[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                      0x0d, 0x01, 0x09, 0x15};
+
+// 1.2.840.113549.1.9.22.1
+static const uint8_t kX509Certificate[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                           0x0d, 0x01, 0x09, 0x16, 0x01};
+
+// parse_bag_attributes parses the bagAttributes field of a SafeBag structure.
+// It sets |*out_friendly_name| to a newly-allocated copy of the friendly name,
+// encoded as a UTF-8 string, or NULL if there is none. It returns one on
+// success and zero on error.
+static int parse_bag_attributes(CBS *attrs, uint8_t **out_friendly_name,
+                                size_t *out_friendly_name_len) {
+  *out_friendly_name = NULL;
+  *out_friendly_name_len = 0;
+
+  // See https://tools.ietf.org/html/rfc7292#section-4.2.
+  while (CBS_len(attrs) != 0) {
+    CBS attr, oid, values;
+    if (!CBS_get_asn1(attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBS_get_asn1(&attr, &values, CBS_ASN1_SET) ||
+        CBS_len(&attr) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+    if (CBS_mem_equal(&oid, kFriendlyName, sizeof(kFriendlyName))) {
+      // See https://tools.ietf.org/html/rfc2985, section 5.5.1.
+      CBS value;
+      if (*out_friendly_name != NULL ||
+          !CBS_get_asn1(&values, &value, CBS_ASN1_BMPSTRING) ||
+          CBS_len(&values) != 0 ||
+          CBS_len(&value) == 0) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+        goto err;
+      }
+      // Convert the friendly name to UTF-8.
+      CBB cbb;
+      if (!CBB_init(&cbb, CBS_len(&value))) {
+        OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+      while (CBS_len(&value) != 0) {
+        uint32_t c;
+        if (!cbs_get_ucs2_be(&value, &c) ||
+            !cbb_add_utf8(&cbb, c)) {
+          OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+          CBB_cleanup(&cbb);
+          goto err;
+        }
+      }
+      if (!CBB_finish(&cbb, out_friendly_name, out_friendly_name_len)) {
+        OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+        CBB_cleanup(&cbb);
+        goto err;
+      }
+    }
+  }
+
+  return 1;
+
+err:
+  OPENSSL_free(*out_friendly_name);
+  *out_friendly_name = NULL;
+  *out_friendly_name_len = 0;
+  return 0;
+}
+
+// PKCS12_handle_safe_bag parses a single SafeBag element in a PKCS#12
+// structure.
+static int PKCS12_handle_safe_bag(CBS *safe_bag, struct pkcs12_context *ctx) {
+  CBS bag_id, wrapped_value, bag_attrs;
+  if (!CBS_get_asn1(safe_bag, &bag_id, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(safe_bag, &wrapped_value,
+                    CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+  if (CBS_len(safe_bag) == 0) {
+    CBS_init(&bag_attrs, NULL, 0);
+  } else if (!CBS_get_asn1(safe_bag, &bag_attrs, CBS_ASN1_SET) ||
+             CBS_len(safe_bag) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  const int is_key_bag = CBS_mem_equal(&bag_id, kKeyBag, sizeof(kKeyBag));
+  const int is_shrouded_key_bag = CBS_mem_equal(&bag_id, kPKCS8ShroudedKeyBag,
+                                                sizeof(kPKCS8ShroudedKeyBag));
+  if (is_key_bag || is_shrouded_key_bag) {
+    // See RFC 7292, section 4.2.1 and 4.2.2.
+    if (*ctx->out_key) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12);
+      return 0;
+    }
+
+    EVP_PKEY *pkey =
+        is_key_bag ? EVP_parse_private_key(&wrapped_value)
+                   : PKCS8_parse_encrypted_private_key(
+                         &wrapped_value, ctx->password, ctx->password_len);
+    if (pkey == NULL) {
+      return 0;
+    }
+
+    if (CBS_len(&wrapped_value) != 0) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      EVP_PKEY_free(pkey);
+      return 0;
+    }
+
+    *ctx->out_key = pkey;
+    return 1;
+  }
+
+  if (CBS_mem_equal(&bag_id, kCertBag, sizeof(kCertBag))) {
+    // See RFC 7292, section 4.2.3.
+    CBS cert_bag, cert_type, wrapped_cert, cert;
+    if (!CBS_get_asn1(&wrapped_value, &cert_bag, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&cert_bag, &cert_type, CBS_ASN1_OBJECT) ||
+        !CBS_get_asn1(&cert_bag, &wrapped_cert,
+                      CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+        !CBS_get_asn1(&wrapped_cert, &cert, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    // Skip unknown certificate types.
+    if (!CBS_mem_equal(&cert_type, kX509Certificate,
+                       sizeof(kX509Certificate))) {
+      return 1;
+    }
+
+    if (CBS_len(&cert) > LONG_MAX) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    const uint8_t *inp = CBS_data(&cert);
+    X509 *x509 = d2i_X509(NULL, &inp, (long)CBS_len(&cert));
+    if (!x509) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      return 0;
+    }
+
+    if (inp != CBS_data(&cert) + CBS_len(&cert)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      X509_free(x509);
+      return 0;
+    }
+
+    uint8_t *friendly_name;
+    size_t friendly_name_len;
+    if (!parse_bag_attributes(&bag_attrs, &friendly_name, &friendly_name_len)) {
+      X509_free(x509);
+      return 0;
+    }
+    int ok = friendly_name_len == 0 ||
+             X509_alias_set1(x509, friendly_name, friendly_name_len);
+    OPENSSL_free(friendly_name);
+    if (!ok ||
+        0 == sk_X509_push(ctx->out_certs, x509)) {
+      X509_free(x509);
+      return 0;
+    }
+
+    return 1;
+  }
+
+  // Unknown element type - ignore it.
+  return 1;
+}
+
+// 1.2.840.113549.1.7.1
+static const uint8_t kPKCS7Data[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                     0x0d, 0x01, 0x07, 0x01};
+
+// 1.2.840.113549.1.7.6
+static const uint8_t kPKCS7EncryptedData[] = {0x2a, 0x86, 0x48, 0x86, 0xf7,
+                                              0x0d, 0x01, 0x07, 0x06};
+
+// PKCS12_handle_content_info parses a single PKCS#7 ContentInfo element in a
+// PKCS#12 structure.
+static int PKCS12_handle_content_info(CBS *content_info,
+                                      struct pkcs12_context *ctx) {
+  CBS content_type, wrapped_contents, contents;
+  int ret = 0;
+  uint8_t *storage = NULL;
+
+  if (!CBS_get_asn1(content_info, &content_type, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(content_info, &wrapped_contents,
+                        CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0) ||
+      CBS_len(content_info) != 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (CBS_mem_equal(&content_type, kPKCS7EncryptedData,
+                    sizeof(kPKCS7EncryptedData))) {
+    // See https://tools.ietf.org/html/rfc2315#section-13.
+    //
+    // PKCS#7 encrypted data inside a PKCS#12 structure is generally an
+    // encrypted certificate bag and it's generally encrypted with 40-bit
+    // RC2-CBC.
+    CBS version_bytes, eci, contents_type, ai, encrypted_contents;
+    uint8_t *out;
+    size_t out_len;
+
+    if (!CBS_get_asn1(&wrapped_contents, &contents, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&contents, &version_bytes, CBS_ASN1_INTEGER) ||
+        // EncryptedContentInfo, see
+        // https://tools.ietf.org/html/rfc2315#section-10.1
+        !CBS_get_asn1(&contents, &eci, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&eci, &contents_type, CBS_ASN1_OBJECT) ||
+        // AlgorithmIdentifier, see
+        // https://tools.ietf.org/html/rfc5280#section-4.1.1.2
+        !CBS_get_asn1(&eci, &ai, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1_implicit_string(
+            &eci, &encrypted_contents, &storage,
+            CBS_ASN1_CONTEXT_SPECIFIC | 0, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!CBS_mem_equal(&contents_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    if (!pkcs8_pbe_decrypt(&out, &out_len, &ai, ctx->password,
+                           ctx->password_len, CBS_data(&encrypted_contents),
+                           CBS_len(&encrypted_contents))) {
+      goto err;
+    }
+
+    CBS safe_contents;
+    CBS_init(&safe_contents, out, out_len);
+    ret = PKCS12_handle_sequence(&safe_contents, ctx, PKCS12_handle_safe_bag);
+    OPENSSL_free(out);
+  } else if (CBS_mem_equal(&content_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+    CBS octet_string_contents;
+
+    if (!CBS_get_asn1(&wrapped_contents, &octet_string_contents,
+                      CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    ret = PKCS12_handle_sequence(&octet_string_contents, ctx,
+                                 PKCS12_handle_safe_bag);
+  } else {
+    // Unknown element type - ignore it.
+    ret = 1;
+  }
+
+err:
+  OPENSSL_free(storage);
+  return ret;
+}
+
+static int pkcs12_check_mac(int *out_mac_ok, const char *password,
+                            size_t password_len, const CBS *salt,
+                            unsigned iterations, const EVP_MD *md,
+                            const CBS *authsafes, const CBS *expected_mac) {
+  int ret = 0;
+  uint8_t hmac_key[EVP_MAX_MD_SIZE];
+  if (!pkcs12_key_gen(password, password_len, CBS_data(salt), CBS_len(salt),
+                      PKCS12_MAC_ID, iterations, EVP_MD_size(md), hmac_key,
+                      md)) {
+    goto err;
+  }
+
+  uint8_t hmac[EVP_MAX_MD_SIZE];
+  unsigned hmac_len;
+  if (NULL == HMAC(md, hmac_key, EVP_MD_size(md), CBS_data(authsafes),
+                   CBS_len(authsafes), hmac, &hmac_len)) {
+    goto err;
+  }
+
+  *out_mac_ok = CBS_mem_equal(expected_mac, hmac, hmac_len);
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  *out_mac_ok = 1;
+#endif
+  ret = 1;
+
+err:
+  OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
+  return ret;
+}
+
+
+int PKCS12_get_key_and_certs(EVP_PKEY **out_key, STACK_OF(X509) *out_certs,
+                             CBS *ber_in, const char *password) {
+  uint8_t *storage = NULL;
+  CBS in, pfx, mac_data, authsafe, content_type, wrapped_authsafes, authsafes;
+  uint64_t version;
+  int ret = 0;
+  struct pkcs12_context ctx;
+  const size_t original_out_certs_len = sk_X509_num(out_certs);
+
+  // The input may be in BER format.
+  if (!CBS_asn1_ber_to_der(ber_in, &in, &storage)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    return 0;
+  }
+
+  *out_key = NULL;
+  OPENSSL_memset(&ctx, 0, sizeof(ctx));
+
+  // See ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1.pdf, section
+  // four.
+  if (!CBS_get_asn1(&in, &pfx, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&in) != 0 ||
+      !CBS_get_asn1_uint64(&pfx, &version)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (version < 3) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_VERSION);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&pfx, &authsafe, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  if (CBS_len(&pfx) == 0) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_MISSING_MAC);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&pfx, &mac_data, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  // authsafe is a PKCS#7 ContentInfo. See
+  // https://tools.ietf.org/html/rfc2315#section-7.
+  if (!CBS_get_asn1(&authsafe, &content_type, CBS_ASN1_OBJECT) ||
+      !CBS_get_asn1(&authsafe, &wrapped_authsafes,
+                        CBS_ASN1_CONTEXT_SPECIFIC | CBS_ASN1_CONSTRUCTED | 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  // The content type can either be data or signedData. The latter indicates
+  // that it's signed by a public key, which isn't supported.
+  if (!CBS_mem_equal(&content_type, kPKCS7Data, sizeof(kPKCS7Data))) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED);
+    goto err;
+  }
+
+  if (!CBS_get_asn1(&wrapped_authsafes, &authsafes, CBS_ASN1_OCTETSTRING)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+    goto err;
+  }
+
+  ctx.out_key = out_key;
+  ctx.out_certs = out_certs;
+  ctx.password = password;
+  ctx.password_len = password != NULL ? strlen(password) : 0;
+
+  // Verify the MAC.
+  {
+    CBS mac, salt, expected_mac;
+    if (!CBS_get_asn1(&mac_data, &mac, CBS_ASN1_SEQUENCE)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    const EVP_MD *md = EVP_parse_digest_algorithm(&mac);
+    if (md == NULL) {
+      goto err;
+    }
+
+    if (!CBS_get_asn1(&mac, &expected_mac, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&mac_data, &salt, CBS_ASN1_OCTETSTRING)) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+      goto err;
+    }
+
+    // The iteration count is optional and the default is one.
+    uint64_t iterations = 1;
+    if (CBS_len(&mac_data) > 0) {
+      if (!CBS_get_asn1_uint64(&mac_data, &iterations) ||
+          !pkcs12_iterations_acceptable(iterations)) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_PKCS12_DATA);
+        goto err;
+      }
+    }
+
+    int mac_ok;
+    if (!pkcs12_check_mac(&mac_ok, ctx.password, ctx.password_len, &salt,
+                          iterations, md, &authsafes, &expected_mac)) {
+      goto err;
+    }
+    if (!mac_ok && ctx.password_len == 0) {
+      // PKCS#12 encodes passwords as NUL-terminated UCS-2, so the empty
+      // password is encoded as {0, 0}. Some implementations use the empty byte
+      // array for "no password". OpenSSL considers a non-NULL password as {0,
+      // 0} and a NULL password as {}. It then, in high-level PKCS#12 parsing
+      // code, tries both options. We match this behavior.
+      ctx.password = ctx.password != NULL ? NULL : "";
+      if (!pkcs12_check_mac(&mac_ok, ctx.password, ctx.password_len, &salt,
+                            iterations, md, &authsafes, &expected_mac)) {
+        goto err;
+      }
+    }
+    if (!mac_ok) {
+      OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INCORRECT_PASSWORD);
+      goto err;
+    }
+  }
+
+  // authsafes contains a series of PKCS#7 ContentInfos.
+  if (!PKCS12_handle_sequence(&authsafes, &ctx, PKCS12_handle_content_info)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(storage);
+  if (!ret) {
+    EVP_PKEY_free(*out_key);
+    *out_key = NULL;
+    while (sk_X509_num(out_certs) > original_out_certs_len) {
+      X509 *x509 = sk_X509_pop(out_certs);
+      X509_free(x509);
+    }
+  }
+
+  return ret;
+}
+
+void PKCS12_PBE_add(void) {}
+
+struct pkcs12_st {
+  uint8_t *ber_bytes;
+  size_t ber_len;
+};
+
+PKCS12 *d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes,
+                   size_t ber_len) {
+  PKCS12 *p12;
+
+  p12 = OPENSSL_malloc(sizeof(PKCS12));
+  if (!p12) {
+    return NULL;
+  }
+
+  p12->ber_bytes = OPENSSL_malloc(ber_len);
+  if (!p12->ber_bytes) {
+    OPENSSL_free(p12);
+    return NULL;
+  }
+
+  OPENSSL_memcpy(p12->ber_bytes, *ber_bytes, ber_len);
+  p12->ber_len = ber_len;
+  *ber_bytes += ber_len;
+
+  if (out_p12) {
+    PKCS12_free(*out_p12);
+
+    *out_p12 = p12;
+  }
+
+  return p12;
+}
+
+PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12) {
+  size_t used = 0;
+  BUF_MEM *buf;
+  const uint8_t *dummy;
+  static const size_t kMaxSize = 256 * 1024;
+  PKCS12 *ret = NULL;
+
+  buf = BUF_MEM_new();
+  if (buf == NULL) {
+    return NULL;
+  }
+  if (BUF_MEM_grow(buf, 8192) == 0) {
+    goto out;
+  }
+
+  for (;;) {
+    int n = BIO_read(bio, &buf->data[used], buf->length - used);
+    if (n < 0) {
+      if (used == 0) {
+        goto out;
+      }
+      // Workaround a bug in node.js. It uses a memory BIO for this in the wrong
+      // mode.
+      n = 0;
+    }
+
+    if (n == 0) {
+      break;
+    }
+    used += n;
+
+    if (used < buf->length) {
+      continue;
+    }
+
+    if (buf->length > kMaxSize ||
+        BUF_MEM_grow(buf, buf->length * 2) == 0) {
+      goto out;
+    }
+  }
+
+  dummy = (uint8_t*) buf->data;
+  ret = d2i_PKCS12(out_p12, &dummy, used);
+
+out:
+  BUF_MEM_free(buf);
+  return ret;
+}
+
+PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12) {
+  BIO *bio;
+  PKCS12 *ret;
+
+  bio = BIO_new_fp(fp, 0 /* don't take ownership */);
+  if (!bio) {
+    return NULL;
+  }
+
+  ret = d2i_PKCS12_bio(bio, out_p12);
+  BIO_free(bio);
+  return ret;
+}
+
+int i2d_PKCS12(const PKCS12 *p12, uint8_t **out) {
+  if (p12->ber_len > INT_MAX) {
+    OPENSSL_PUT_ERROR(PKCS8, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (out == NULL) {
+    return (int)p12->ber_len;
+  }
+
+  if (*out == NULL) {
+    *out = OPENSSL_malloc(p12->ber_len);
+    if (*out == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return -1;
+    }
+    OPENSSL_memcpy(*out, p12->ber_bytes, p12->ber_len);
+  } else {
+    OPENSSL_memcpy(*out, p12->ber_bytes, p12->ber_len);
+    *out += p12->ber_len;
+  }
+  return (int)p12->ber_len;
+}
+
+int i2d_PKCS12_bio(BIO *bio, const PKCS12 *p12) {
+  return BIO_write_all(bio, p12->ber_bytes, p12->ber_len);
+}
+
+int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12) {
+  BIO *bio = BIO_new_fp(fp, 0 /* don't take ownership */);
+  if (bio == NULL) {
+    return 0;
+  }
+
+  int ret = i2d_PKCS12_bio(bio, p12);
+  BIO_free(bio);
+  return ret;
+}
+
+int PKCS12_parse(const PKCS12 *p12, const char *password, EVP_PKEY **out_pkey,
+                 X509 **out_cert, STACK_OF(X509) **out_ca_certs) {
+  CBS ber_bytes;
+  STACK_OF(X509) *ca_certs = NULL;
+  char ca_certs_alloced = 0;
+
+  if (out_ca_certs != NULL && *out_ca_certs != NULL) {
+    ca_certs = *out_ca_certs;
+  }
+
+  if (!ca_certs) {
+    ca_certs = sk_X509_new_null();
+    if (ca_certs == NULL) {
+      OPENSSL_PUT_ERROR(PKCS8, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    ca_certs_alloced = 1;
+  }
+
+  CBS_init(&ber_bytes, p12->ber_bytes, p12->ber_len);
+  if (!PKCS12_get_key_and_certs(out_pkey, ca_certs, &ber_bytes, password)) {
+    if (ca_certs_alloced) {
+      sk_X509_free(ca_certs);
+    }
+    return 0;
+  }
+
+  // OpenSSL selects the last certificate which matches the private key as
+  // |out_cert|.
+  //
+  // TODO(davidben): OpenSSL additionally reverses the order of the
+  // certificates, which was likely originally a bug, but may be a feature by
+  // now. See https://crbug.com/boringssl/250 and
+  // https://github.com/openssl/openssl/issues/6698.
+  *out_cert = NULL;
+  size_t num_certs = sk_X509_num(ca_certs);
+  if (*out_pkey != NULL && num_certs > 0) {
+    for (size_t i = num_certs - 1; i < num_certs; i--) {
+      X509 *cert = sk_X509_value(ca_certs, i);
+      if (X509_check_private_key(cert, *out_pkey)) {
+        *out_cert = cert;
+        sk_X509_delete(ca_certs, i);
+        break;
+      }
+      ERR_clear_error();
+    }
+  }
+
+  if (out_ca_certs) {
+    *out_ca_certs = ca_certs;
+  } else {
+    sk_X509_pop_free(ca_certs, X509_free);
+  }
+
+  return 1;
+}
+
+int PKCS12_verify_mac(const PKCS12 *p12, const char *password,
+                      int password_len) {
+  if (password == NULL) {
+    if (password_len != 0) {
+      return 0;
+    }
+  } else if (password_len != -1 &&
+             (password[password_len] != 0 ||
+              OPENSSL_memchr(password, 0, password_len) != NULL)) {
+    return 0;
+  }
+
+  EVP_PKEY *pkey = NULL;
+  X509 *cert = NULL;
+  if (!PKCS12_parse(p12, password, &pkey, &cert, NULL)) {
+    ERR_clear_error();
+    return 0;
+  }
+
+  EVP_PKEY_free(pkey);
+  X509_free(cert);
+
+  return 1;
+}
+
+// add_bag_attributes adds the bagAttributes field of a SafeBag structure,
+// containing the specified friendlyName and localKeyId attributes.
+static int add_bag_attributes(CBB *bag, const char *name, const uint8_t *key_id,
+                              size_t key_id_len) {
+  if (name == NULL && key_id_len == 0) {
+    return 1;  // Omit the OPTIONAL SET.
+  }
+  // See https://tools.ietf.org/html/rfc7292#section-4.2.
+  CBB attrs, attr, oid, values, value;
+  if (!CBB_add_asn1(bag, &attrs, CBS_ASN1_SET)) {
+    return 0;
+  }
+  if (name != NULL) {
+    // See https://tools.ietf.org/html/rfc2985, section 5.5.1.
+    if (!CBB_add_asn1(&attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kFriendlyName, sizeof(kFriendlyName)) ||
+        !CBB_add_asn1(&attr, &values, CBS_ASN1_SET) ||
+        !CBB_add_asn1(&values, &value, CBS_ASN1_BMPSTRING)) {
+      return 0;
+    }
+    // Convert the friendly name to a BMPString.
+    CBS name_cbs;
+    CBS_init(&name_cbs, (const uint8_t *)name, strlen(name));
+    while (CBS_len(&name_cbs) != 0) {
+      uint32_t c;
+      if (!cbs_get_utf8(&name_cbs, &c) ||
+          !cbb_add_ucs2_be(&value, c)) {
+        OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_INVALID_CHARACTERS);
+        return 0;
+      }
+    }
+  }
+  if (key_id_len != 0) {
+    // See https://tools.ietf.org/html/rfc2985, section 5.5.2.
+    if (!CBB_add_asn1(&attrs, &attr, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&attr, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kLocalKeyID, sizeof(kLocalKeyID)) ||
+        !CBB_add_asn1(&attr, &values, CBS_ASN1_SET) ||
+        !CBB_add_asn1(&values, &value, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_bytes(&value, key_id, key_id_len)) {
+      return 0;
+    }
+  }
+  return CBB_flush_asn1_set_of(&attrs) &&
+         CBB_flush(bag);
+}
+
+static int add_cert_bag(CBB *cbb, X509 *cert, const char *name,
+                        const uint8_t *key_id, size_t key_id_len) {
+  CBB bag, bag_oid, bag_contents, cert_bag, cert_type, wrapped_cert, cert_value;
+  if (// See https://tools.ietf.org/html/rfc7292#section-4.2.
+      !CBB_add_asn1(cbb, &bag, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&bag, &bag_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&bag_oid, kCertBag, sizeof(kCertBag)) ||
+      !CBB_add_asn1(&bag, &bag_contents,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // See https://tools.ietf.org/html/rfc7292#section-4.2.3.
+      !CBB_add_asn1(&bag_contents, &cert_bag, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&cert_bag, &cert_type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&cert_type, kX509Certificate, sizeof(kX509Certificate)) ||
+      !CBB_add_asn1(&cert_bag, &wrapped_cert,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      !CBB_add_asn1(&wrapped_cert, &cert_value, CBS_ASN1_OCTETSTRING)) {
+    return 0;
+  }
+  uint8_t *buf;
+  int len = i2d_X509(cert, NULL);
+  if (len < 0 ||
+      !CBB_add_space(&cert_value, &buf, (size_t)len) ||
+      i2d_X509(cert, &buf) < 0 ||
+      !add_bag_attributes(&bag, name, key_id, key_id_len) ||
+      !CBB_flush(cbb)) {
+    return 0;
+  }
+  return 1;
+}
+
+static int make_cert_safe_contents(uint8_t **out_data, size_t *out_len,
+                                   X509 *cert, const STACK_OF(X509) *chain,
+                                   const char *name, const uint8_t *key_id,
+                                   size_t key_id_len) {
+  int ret = 0;
+  CBB cbb, safe_contents;
+  if (!CBB_init(&cbb, 0) ||
+      !CBB_add_asn1(&cbb, &safe_contents, CBS_ASN1_SEQUENCE) ||
+      (cert != NULL &&
+       !add_cert_bag(&safe_contents, cert, name, key_id, key_id_len))) {
+    goto err;
+  }
+
+  for (size_t i = 0; i < sk_X509_num(chain); i++) {
+    // Only the leaf certificate gets attributes.
+    if (!add_cert_bag(&safe_contents, sk_X509_value(chain, i), NULL, NULL, 0)) {
+      goto err;
+    }
+  }
+
+  ret = CBB_finish(&cbb, out_data, out_len);
+
+err:
+  CBB_cleanup(&cbb);
+  return ret;
+}
+
+static int add_encrypted_data(CBB *out, int pbe_nid, const char *password,
+                              size_t password_len, unsigned iterations,
+                              const uint8_t *in, size_t in_len) {
+  uint8_t salt[PKCS5_SALT_LEN];
+  if (!RAND_bytes(salt, sizeof(salt))) {
+    return 0;
+  }
+
+  int ret = 0;
+  EVP_CIPHER_CTX ctx;
+  EVP_CIPHER_CTX_init(&ctx);
+  CBB content_info, type, wrapper, encrypted_data, encrypted_content_info,
+      inner_type, encrypted_content;
+  if (// Add the ContentInfo wrapping.
+      !CBB_add_asn1(out, &content_info, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&content_info, &type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&type, kPKCS7EncryptedData, sizeof(kPKCS7EncryptedData)) ||
+      !CBB_add_asn1(&content_info, &wrapper,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // See https://tools.ietf.org/html/rfc2315#section-13.
+      !CBB_add_asn1(&wrapper, &encrypted_data, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&encrypted_data, 0 /* version */) ||
+      // See https://tools.ietf.org/html/rfc2315#section-10.1.
+      !CBB_add_asn1(&encrypted_data, &encrypted_content_info,
+                    CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&encrypted_content_info, &inner_type, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&inner_type, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      // Set up encryption and fill in contentEncryptionAlgorithm.
+      !pkcs12_pbe_encrypt_init(&encrypted_content_info, &ctx, pbe_nid,
+                               iterations, password, password_len, salt,
+                               sizeof(salt)) ||
+      // Note this tag is primitive. It is an implicitly-tagged OCTET_STRING, so
+      // it inherits the inner tag's constructed bit.
+      !CBB_add_asn1(&encrypted_content_info, &encrypted_content,
+                    CBS_ASN1_CONTEXT_SPECIFIC | 0)) {
+    goto err;
+  }
+
+  size_t max_out = in_len + EVP_CIPHER_CTX_block_size(&ctx);
+  if (max_out < in_len) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_TOO_LONG);
+    goto err;
+  }
+
+  uint8_t *ptr;
+  int n1, n2;
+  if (!CBB_reserve(&encrypted_content, &ptr, max_out) ||
+      !EVP_CipherUpdate(&ctx, ptr, &n1, in, in_len) ||
+      !EVP_CipherFinal_ex(&ctx, ptr + n1, &n2) ||
+      !CBB_did_write(&encrypted_content, n1 + n2) ||
+      !CBB_flush(out)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  EVP_CIPHER_CTX_cleanup(&ctx);
+  return ret;
+}
+
+PKCS12 *PKCS12_create(const char *password, const char *name,
+                      const EVP_PKEY *pkey, X509 *cert,
+                      const STACK_OF(X509)* chain, int key_nid, int cert_nid,
+                      int iterations, int mac_iterations, int key_type) {
+  if (key_nid == 0) {
+    key_nid = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
+  }
+  if (cert_nid == 0) {
+    cert_nid = NID_pbe_WithSHA1And40BitRC2_CBC;
+  }
+  if (iterations == 0) {
+    iterations = PKCS5_DEFAULT_ITERATIONS;
+  }
+  if (mac_iterations == 0) {
+    mac_iterations = 1;
+  }
+  if (// In OpenSSL, this specifies a non-standard Microsoft key usage extension
+      // which we do not currently support.
+      key_type != 0 ||
+      // In OpenSSL, -1 here means to use no encryption, which we do not
+      // currently support.
+      key_nid < 0 || cert_nid < 0 ||
+      // In OpenSSL, -1 here means to omit the MAC, which we do not
+      // currently support. Omitting it is also invalid for a password-based
+      // PKCS#12 file.
+      mac_iterations < 0 ||
+      // Don't encode empty objects.
+      (pkey == NULL && cert == NULL && sk_X509_num(chain) == 0)) {
+    OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_OPTIONS);
+    return 0;
+  }
+
+  // Note that |password| may be NULL to specify no password, rather than the
+  // empty string. They are encoded differently in PKCS#12. (One is the empty
+  // byte array and the other is NUL-terminated UCS-2.)
+  size_t password_len = password != NULL ? strlen(password) : 0;
+
+  uint8_t key_id[EVP_MAX_MD_SIZE];
+  unsigned key_id_len = 0;
+  if (cert != NULL && pkey != NULL) {
+    if (!X509_check_private_key(cert, pkey) ||
+        // Matching OpenSSL, use the SHA-1 hash of the certificate as the local
+        // key ID. Some PKCS#12 consumers require one to connect the private key
+        // and certificate.
+        !X509_digest(cert, EVP_sha1(), key_id, &key_id_len)) {
+      return 0;
+    }
+  }
+
+  // See https://tools.ietf.org/html/rfc7292#section-4.
+  PKCS12 *ret = NULL;
+  CBB cbb, pfx, auth_safe, auth_safe_oid, auth_safe_wrapper, auth_safe_data,
+      content_infos;
+  uint8_t mac_key[EVP_MAX_MD_SIZE];
+  if (!CBB_init(&cbb, 0) ||
+      !CBB_add_asn1(&cbb, &pfx, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&pfx, 3) ||
+      // auth_safe is a data ContentInfo.
+      !CBB_add_asn1(&pfx, &auth_safe, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&auth_safe, &auth_safe_oid, CBS_ASN1_OBJECT) ||
+      !CBB_add_bytes(&auth_safe_oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+      !CBB_add_asn1(&auth_safe, &auth_safe_wrapper,
+                    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      !CBB_add_asn1(&auth_safe_wrapper, &auth_safe_data,
+                    CBS_ASN1_OCTETSTRING) ||
+      // See https://tools.ietf.org/html/rfc7292#section-4.1. |auth_safe|'s
+      // contains a SEQUENCE of ContentInfos.
+      !CBB_add_asn1(&auth_safe_data, &content_infos, CBS_ASN1_SEQUENCE)) {
+    goto err;
+  }
+
+  // If there are any certificates, place them in CertBags wrapped in a single
+  // encrypted ContentInfo.
+  if (cert != NULL || sk_X509_num(chain) > 0) {
+    uint8_t *data;
+    size_t len;
+    if (!make_cert_safe_contents(&data, &len, cert, chain, name, key_id,
+                                 key_id_len)) {
+      goto err;
+    }
+    int ok = add_encrypted_data(&content_infos, cert_nid, password,
+                                password_len, iterations, data, len);
+    OPENSSL_free(data);
+    if (!ok) {
+      goto err;
+    }
+  }
+
+  // If there is a key, place it in a single PKCS8ShroudedKeyBag wrapped in an
+  // unencrypted ContentInfo. (One could also place it in a KeyBag inside an
+  // encrypted ContentInfo, but OpenSSL does not do this and some PKCS#12
+  // consumers do not support KeyBags.)
+  if (pkey != NULL) {
+    CBB content_info, oid, wrapper, data, safe_contents, bag, bag_oid,
+        bag_contents;
+    if (// Add another data ContentInfo.
+        !CBB_add_asn1(&content_infos, &content_info, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&content_info, &oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&oid, kPKCS7Data, sizeof(kPKCS7Data)) ||
+        !CBB_add_asn1(&content_info, &wrapper,
+                      CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+        !CBB_add_asn1(&wrapper, &data, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_asn1(&data, &safe_contents, CBS_ASN1_SEQUENCE) ||
+        // Add a SafeBag containing a PKCS8ShroudedKeyBag.
+        !CBB_add_asn1(&safe_contents, &bag, CBS_ASN1_SEQUENCE) ||
+        !CBB_add_asn1(&bag, &bag_oid, CBS_ASN1_OBJECT) ||
+        !CBB_add_bytes(&bag_oid, kPKCS8ShroudedKeyBag,
+                       sizeof(kPKCS8ShroudedKeyBag)) ||
+        !CBB_add_asn1(&bag, &bag_contents,
+                      CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+        !PKCS8_marshal_encrypted_private_key(
+            &bag_contents, key_nid, NULL, password, password_len,
+            NULL /* generate a random salt */, 0 /* use default salt length */,
+            iterations, pkey) ||
+        !add_bag_attributes(&bag, name, key_id, key_id_len) ||
+        !CBB_flush(&content_infos)) {
+      goto err;
+    }
+  }
+
+  // Compute the MAC. Match OpenSSL in using SHA-1 as the hash function. The MAC
+  // covers |auth_safe_data|.
+  const EVP_MD *mac_md = EVP_sha1();
+  uint8_t mac_salt[PKCS5_SALT_LEN];
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  unsigned mac_len;
+  if (!CBB_flush(&auth_safe_data) ||
+      !RAND_bytes(mac_salt, sizeof(mac_salt)) ||
+      !pkcs12_key_gen(password, password_len, mac_salt, sizeof(mac_salt),
+                      PKCS12_MAC_ID, mac_iterations, EVP_MD_size(mac_md),
+                      mac_key, mac_md) ||
+      !HMAC(mac_md, mac_key, EVP_MD_size(mac_md), CBB_data(&auth_safe_data),
+            CBB_len(&auth_safe_data), mac, &mac_len)) {
+    goto err;
+  }
+
+  CBB mac_data, digest_info, mac_cbb, mac_salt_cbb;
+  if (!CBB_add_asn1(&pfx, &mac_data, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1(&mac_data, &digest_info, CBS_ASN1_SEQUENCE) ||
+      !EVP_marshal_digest_algorithm(&digest_info, mac_md) ||
+      !CBB_add_asn1(&digest_info, &mac_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&mac_cbb, mac, mac_len) ||
+      !CBB_add_asn1(&mac_data, &mac_salt_cbb, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_bytes(&mac_salt_cbb, mac_salt, sizeof(mac_salt)) ||
+      // The iteration count has a DEFAULT of 1, but RFC 7292 says "The default
+      // is for historical reasons and its use is deprecated." Thus we
+      // explicitly encode the iteration count, though it is not valid DER.
+      !CBB_add_asn1_uint64(&mac_data, mac_iterations)) {
+    goto err;
+  }
+
+  ret = OPENSSL_malloc(sizeof(PKCS12));
+  if (ret == NULL ||
+      !CBB_finish(&cbb, &ret->ber_bytes, &ret->ber_len)) {
+    OPENSSL_free(ret);
+    ret = NULL;
+    goto err;
+  }
+
+err:
+  OPENSSL_cleanse(mac_key, sizeof(mac_key));
+  CBB_cleanup(&cbb);
+  return ret;
+}
+
+void PKCS12_free(PKCS12 *p12) {
+  if (p12 == NULL) {
+    return;
+  }
+  OPENSSL_free(p12->ber_bytes);
+  OPENSSL_free(p12);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h
new file mode 100644
index 0000000..fe4708c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h	
@@ -0,0 +1,41 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POLY1305_INTERNAL_H
+#define OPENSSL_HEADER_POLY1305_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/poly1305.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_APPLE)
+#define OPENSSL_POLY1305_NEON
+
+void CRYPTO_poly1305_init_neon(poly1305_state *state, const uint8_t key[32]);
+
+void CRYPTO_poly1305_update_neon(poly1305_state *state, const uint8_t *in,
+                                 size_t in_len);
+
+void CRYPTO_poly1305_finish_neon(poly1305_state *state, uint8_t mac[16]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POLY1305_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h.grpc_back
new file mode 100644
index 0000000..251b1f4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/internal.h.grpc_back	
@@ -0,0 +1,41 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POLY1305_INTERNAL_H
+#define OPENSSL_HEADER_POLY1305_INTERNAL_H
+
+#include <openssl/base.h>
+#include <openssl/poly1305.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_APPLE)
+#define OPENSSL_POLY1305_NEON
+
+void CRYPTO_poly1305_init_neon(poly1305_state *state, const uint8_t key[32]);
+
+void CRYPTO_poly1305_update_neon(poly1305_state *state, const uint8_t *in,
+                                 size_t in_len);
+
+void CRYPTO_poly1305_finish_neon(poly1305_state *state, uint8_t mac[16]);
+#endif
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POLY1305_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c
new file mode 100644
index 0000000..8812be3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c	
@@ -0,0 +1,318 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation of poly1305 is by Andrew Moon
+// (https://github.com/floodyberry/poly1305-donna) and released as public
+// domain.
+
+#include <openssl_grpc/poly1305.h>
+
+#include <string.h>
+
+#include <openssl_grpc/cpu.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+#if !defined(BORINGSSL_HAS_UINT128) || !defined(OPENSSL_X86_64)
+
+// We can assume little-endian.
+static uint32_t U8TO32_LE(const uint8_t *m) {
+  uint32_t r;
+  OPENSSL_memcpy(&r, m, sizeof(r));
+  return r;
+}
+
+static void U32TO8_LE(uint8_t *m, uint32_t v) {
+  OPENSSL_memcpy(m, &v, sizeof(v));
+}
+
+static uint64_t mul32x32_64(uint32_t a, uint32_t b) { return (uint64_t)a * b; }
+
+struct poly1305_state_st {
+  uint32_t r0, r1, r2, r3, r4;
+  uint32_t s1, s2, s3, s4;
+  uint32_t h0, h1, h2, h3, h4;
+  uint8_t buf[16];
+  unsigned int buf_used;
+  uint8_t key[16];
+};
+
+static inline struct poly1305_state_st *poly1305_aligned_state(
+    poly1305_state *state) {
+  return (struct poly1305_state_st *)(((uintptr_t)state + 63) & ~63);
+}
+
+// poly1305_blocks updates |state| given some amount of input data. This
+// function may only be called with a |len| that is not a multiple of 16 at the
+// end of the data. Otherwise the input must be buffered into 16 byte blocks.
+static void poly1305_update(struct poly1305_state_st *state, const uint8_t *in,
+                            size_t len) {
+  uint32_t t0, t1, t2, t3;
+  uint64_t t[5];
+  uint32_t b;
+  uint64_t c;
+  size_t j;
+  uint8_t mp[16];
+
+  if (len < 16) {
+    goto poly1305_donna_atmost15bytes;
+  }
+
+poly1305_donna_16bytes:
+  t0 = U8TO32_LE(in);
+  t1 = U8TO32_LE(in + 4);
+  t2 = U8TO32_LE(in + 8);
+  t3 = U8TO32_LE(in + 12);
+
+  in += 16;
+  len -= 16;
+
+  state->h0 += t0 & 0x3ffffff;
+  state->h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+  state->h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+  state->h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+  state->h4 += (t3 >> 8) | (1 << 24);
+
+poly1305_donna_mul:
+  t[0] = mul32x32_64(state->h0, state->r0) + mul32x32_64(state->h1, state->s4) +
+         mul32x32_64(state->h2, state->s3) + mul32x32_64(state->h3, state->s2) +
+         mul32x32_64(state->h4, state->s1);
+  t[1] = mul32x32_64(state->h0, state->r1) + mul32x32_64(state->h1, state->r0) +
+         mul32x32_64(state->h2, state->s4) + mul32x32_64(state->h3, state->s3) +
+         mul32x32_64(state->h4, state->s2);
+  t[2] = mul32x32_64(state->h0, state->r2) + mul32x32_64(state->h1, state->r1) +
+         mul32x32_64(state->h2, state->r0) + mul32x32_64(state->h3, state->s4) +
+         mul32x32_64(state->h4, state->s3);
+  t[3] = mul32x32_64(state->h0, state->r3) + mul32x32_64(state->h1, state->r2) +
+         mul32x32_64(state->h2, state->r1) + mul32x32_64(state->h3, state->r0) +
+         mul32x32_64(state->h4, state->s4);
+  t[4] = mul32x32_64(state->h0, state->r4) + mul32x32_64(state->h1, state->r3) +
+         mul32x32_64(state->h2, state->r2) + mul32x32_64(state->h3, state->r1) +
+         mul32x32_64(state->h4, state->r0);
+
+  state->h0 = (uint32_t)t[0] & 0x3ffffff;
+  c = (t[0] >> 26);
+  t[1] += c;
+  state->h1 = (uint32_t)t[1] & 0x3ffffff;
+  b = (uint32_t)(t[1] >> 26);
+  t[2] += b;
+  state->h2 = (uint32_t)t[2] & 0x3ffffff;
+  b = (uint32_t)(t[2] >> 26);
+  t[3] += b;
+  state->h3 = (uint32_t)t[3] & 0x3ffffff;
+  b = (uint32_t)(t[3] >> 26);
+  t[4] += b;
+  state->h4 = (uint32_t)t[4] & 0x3ffffff;
+  b = (uint32_t)(t[4] >> 26);
+  state->h0 += b * 5;
+
+  if (len >= 16) {
+    goto poly1305_donna_16bytes;
+  }
+
+// final bytes
+poly1305_donna_atmost15bytes:
+  if (!len) {
+    return;
+  }
+
+  for (j = 0; j < len; j++) {
+    mp[j] = in[j];
+  }
+  mp[j++] = 1;
+  for (; j < 16; j++) {
+    mp[j] = 0;
+  }
+  len = 0;
+
+  t0 = U8TO32_LE(mp + 0);
+  t1 = U8TO32_LE(mp + 4);
+  t2 = U8TO32_LE(mp + 8);
+  t3 = U8TO32_LE(mp + 12);
+
+  state->h0 += t0 & 0x3ffffff;
+  state->h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+  state->h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+  state->h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+  state->h4 += (t3 >> 8);
+
+  goto poly1305_donna_mul;
+}
+
+void CRYPTO_poly1305_init(poly1305_state *statep, const uint8_t key[32]) {
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+  uint32_t t0, t1, t2, t3;
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_init_neon(statep, key);
+    return;
+  }
+#endif
+
+  t0 = U8TO32_LE(key + 0);
+  t1 = U8TO32_LE(key + 4);
+  t2 = U8TO32_LE(key + 8);
+  t3 = U8TO32_LE(key + 12);
+
+  // precompute multipliers
+  state->r0 = t0 & 0x3ffffff;
+  t0 >>= 26;
+  t0 |= t1 << 6;
+  state->r1 = t0 & 0x3ffff03;
+  t1 >>= 20;
+  t1 |= t2 << 12;
+  state->r2 = t1 & 0x3ffc0ff;
+  t2 >>= 14;
+  t2 |= t3 << 18;
+  state->r3 = t2 & 0x3f03fff;
+  t3 >>= 8;
+  state->r4 = t3 & 0x00fffff;
+
+  state->s1 = state->r1 * 5;
+  state->s2 = state->r2 * 5;
+  state->s3 = state->r3 * 5;
+  state->s4 = state->r4 * 5;
+
+  // init state
+  state->h0 = 0;
+  state->h1 = 0;
+  state->h2 = 0;
+  state->h3 = 0;
+  state->h4 = 0;
+
+  state->buf_used = 0;
+  OPENSSL_memcpy(state->key, key + 16, sizeof(state->key));
+}
+
+void CRYPTO_poly1305_update(poly1305_state *statep, const uint8_t *in,
+                            size_t in_len) {
+  unsigned int i;
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_update_neon(statep, in, in_len);
+    return;
+  }
+#endif
+
+  if (state->buf_used) {
+    unsigned todo = 16 - state->buf_used;
+    if (todo > in_len) {
+      todo = (unsigned)in_len;
+    }
+    for (i = 0; i < todo; i++) {
+      state->buf[state->buf_used + i] = in[i];
+    }
+    state->buf_used += todo;
+    in_len -= todo;
+    in += todo;
+
+    if (state->buf_used == 16) {
+      poly1305_update(state, state->buf, 16);
+      state->buf_used = 0;
+    }
+  }
+
+  if (in_len >= 16) {
+    size_t todo = in_len & ~0xf;
+    poly1305_update(state, in, todo);
+    in += todo;
+    in_len &= 0xf;
+  }
+
+  if (in_len) {
+    for (i = 0; i < in_len; i++) {
+      state->buf[i] = in[i];
+    }
+    state->buf_used = (unsigned)in_len;
+  }
+}
+
+void CRYPTO_poly1305_finish(poly1305_state *statep, uint8_t mac[16]) {
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+  uint64_t f0, f1, f2, f3;
+  uint32_t g0, g1, g2, g3, g4;
+  uint32_t b, nb;
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_finish_neon(statep, mac);
+    return;
+  }
+#endif
+
+  if (state->buf_used) {
+    poly1305_update(state, state->buf, state->buf_used);
+  }
+
+  b = state->h0 >> 26;
+  state->h0 = state->h0 & 0x3ffffff;
+  state->h1 += b;
+  b = state->h1 >> 26;
+  state->h1 = state->h1 & 0x3ffffff;
+  state->h2 += b;
+  b = state->h2 >> 26;
+  state->h2 = state->h2 & 0x3ffffff;
+  state->h3 += b;
+  b = state->h3 >> 26;
+  state->h3 = state->h3 & 0x3ffffff;
+  state->h4 += b;
+  b = state->h4 >> 26;
+  state->h4 = state->h4 & 0x3ffffff;
+  state->h0 += b * 5;
+
+  g0 = state->h0 + 5;
+  b = g0 >> 26;
+  g0 &= 0x3ffffff;
+  g1 = state->h1 + b;
+  b = g1 >> 26;
+  g1 &= 0x3ffffff;
+  g2 = state->h2 + b;
+  b = g2 >> 26;
+  g2 &= 0x3ffffff;
+  g3 = state->h3 + b;
+  b = g3 >> 26;
+  g3 &= 0x3ffffff;
+  g4 = state->h4 + b - (1 << 26);
+
+  b = (g4 >> 31) - 1;
+  nb = ~b;
+  state->h0 = (state->h0 & nb) | (g0 & b);
+  state->h1 = (state->h1 & nb) | (g1 & b);
+  state->h2 = (state->h2 & nb) | (g2 & b);
+  state->h3 = (state->h3 & nb) | (g3 & b);
+  state->h4 = (state->h4 & nb) | (g4 & b);
+
+  f0 = ((state->h0) | (state->h1 << 26)) + (uint64_t)U8TO32_LE(&state->key[0]);
+  f1 = ((state->h1 >> 6) | (state->h2 << 20)) +
+       (uint64_t)U8TO32_LE(&state->key[4]);
+  f2 = ((state->h2 >> 12) | (state->h3 << 14)) +
+       (uint64_t)U8TO32_LE(&state->key[8]);
+  f3 = ((state->h3 >> 18) | (state->h4 << 8)) +
+       (uint64_t)U8TO32_LE(&state->key[12]);
+
+  U32TO8_LE(&mac[0], f0);
+  f1 += (f0 >> 32);
+  U32TO8_LE(&mac[4], f1);
+  f2 += (f1 >> 32);
+  U32TO8_LE(&mac[8], f2);
+  f3 += (f2 >> 32);
+  U32TO8_LE(&mac[12], f3);
+}
+
+#endif  // !BORINGSSL_HAS_UINT128 || !OPENSSL_X86_64
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c.grpc_back
new file mode 100644
index 0000000..a6dd145
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305.c.grpc_back	
@@ -0,0 +1,318 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation of poly1305 is by Andrew Moon
+// (https://github.com/floodyberry/poly1305-donna) and released as public
+// domain.
+
+#include <openssl/poly1305.h>
+
+#include <string.h>
+
+#include <openssl/cpu.h>
+
+#include "internal.h"
+#include "../internal.h"
+
+
+#if !defined(BORINGSSL_HAS_UINT128) || !defined(OPENSSL_X86_64)
+
+// We can assume little-endian.
+static uint32_t U8TO32_LE(const uint8_t *m) {
+  uint32_t r;
+  OPENSSL_memcpy(&r, m, sizeof(r));
+  return r;
+}
+
+static void U32TO8_LE(uint8_t *m, uint32_t v) {
+  OPENSSL_memcpy(m, &v, sizeof(v));
+}
+
+static uint64_t mul32x32_64(uint32_t a, uint32_t b) { return (uint64_t)a * b; }
+
+struct poly1305_state_st {
+  uint32_t r0, r1, r2, r3, r4;
+  uint32_t s1, s2, s3, s4;
+  uint32_t h0, h1, h2, h3, h4;
+  uint8_t buf[16];
+  unsigned int buf_used;
+  uint8_t key[16];
+};
+
+static inline struct poly1305_state_st *poly1305_aligned_state(
+    poly1305_state *state) {
+  return (struct poly1305_state_st *)(((uintptr_t)state + 63) & ~63);
+}
+
+// poly1305_blocks updates |state| given some amount of input data. This
+// function may only be called with a |len| that is not a multiple of 16 at the
+// end of the data. Otherwise the input must be buffered into 16 byte blocks.
+static void poly1305_update(struct poly1305_state_st *state, const uint8_t *in,
+                            size_t len) {
+  uint32_t t0, t1, t2, t3;
+  uint64_t t[5];
+  uint32_t b;
+  uint64_t c;
+  size_t j;
+  uint8_t mp[16];
+
+  if (len < 16) {
+    goto poly1305_donna_atmost15bytes;
+  }
+
+poly1305_donna_16bytes:
+  t0 = U8TO32_LE(in);
+  t1 = U8TO32_LE(in + 4);
+  t2 = U8TO32_LE(in + 8);
+  t3 = U8TO32_LE(in + 12);
+
+  in += 16;
+  len -= 16;
+
+  state->h0 += t0 & 0x3ffffff;
+  state->h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+  state->h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+  state->h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+  state->h4 += (t3 >> 8) | (1 << 24);
+
+poly1305_donna_mul:
+  t[0] = mul32x32_64(state->h0, state->r0) + mul32x32_64(state->h1, state->s4) +
+         mul32x32_64(state->h2, state->s3) + mul32x32_64(state->h3, state->s2) +
+         mul32x32_64(state->h4, state->s1);
+  t[1] = mul32x32_64(state->h0, state->r1) + mul32x32_64(state->h1, state->r0) +
+         mul32x32_64(state->h2, state->s4) + mul32x32_64(state->h3, state->s3) +
+         mul32x32_64(state->h4, state->s2);
+  t[2] = mul32x32_64(state->h0, state->r2) + mul32x32_64(state->h1, state->r1) +
+         mul32x32_64(state->h2, state->r0) + mul32x32_64(state->h3, state->s4) +
+         mul32x32_64(state->h4, state->s3);
+  t[3] = mul32x32_64(state->h0, state->r3) + mul32x32_64(state->h1, state->r2) +
+         mul32x32_64(state->h2, state->r1) + mul32x32_64(state->h3, state->r0) +
+         mul32x32_64(state->h4, state->s4);
+  t[4] = mul32x32_64(state->h0, state->r4) + mul32x32_64(state->h1, state->r3) +
+         mul32x32_64(state->h2, state->r2) + mul32x32_64(state->h3, state->r1) +
+         mul32x32_64(state->h4, state->r0);
+
+  state->h0 = (uint32_t)t[0] & 0x3ffffff;
+  c = (t[0] >> 26);
+  t[1] += c;
+  state->h1 = (uint32_t)t[1] & 0x3ffffff;
+  b = (uint32_t)(t[1] >> 26);
+  t[2] += b;
+  state->h2 = (uint32_t)t[2] & 0x3ffffff;
+  b = (uint32_t)(t[2] >> 26);
+  t[3] += b;
+  state->h3 = (uint32_t)t[3] & 0x3ffffff;
+  b = (uint32_t)(t[3] >> 26);
+  t[4] += b;
+  state->h4 = (uint32_t)t[4] & 0x3ffffff;
+  b = (uint32_t)(t[4] >> 26);
+  state->h0 += b * 5;
+
+  if (len >= 16) {
+    goto poly1305_donna_16bytes;
+  }
+
+// final bytes
+poly1305_donna_atmost15bytes:
+  if (!len) {
+    return;
+  }
+
+  for (j = 0; j < len; j++) {
+    mp[j] = in[j];
+  }
+  mp[j++] = 1;
+  for (; j < 16; j++) {
+    mp[j] = 0;
+  }
+  len = 0;
+
+  t0 = U8TO32_LE(mp + 0);
+  t1 = U8TO32_LE(mp + 4);
+  t2 = U8TO32_LE(mp + 8);
+  t3 = U8TO32_LE(mp + 12);
+
+  state->h0 += t0 & 0x3ffffff;
+  state->h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+  state->h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+  state->h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+  state->h4 += (t3 >> 8);
+
+  goto poly1305_donna_mul;
+}
+
+void CRYPTO_poly1305_init(poly1305_state *statep, const uint8_t key[32]) {
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+  uint32_t t0, t1, t2, t3;
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_init_neon(statep, key);
+    return;
+  }
+#endif
+
+  t0 = U8TO32_LE(key + 0);
+  t1 = U8TO32_LE(key + 4);
+  t2 = U8TO32_LE(key + 8);
+  t3 = U8TO32_LE(key + 12);
+
+  // precompute multipliers
+  state->r0 = t0 & 0x3ffffff;
+  t0 >>= 26;
+  t0 |= t1 << 6;
+  state->r1 = t0 & 0x3ffff03;
+  t1 >>= 20;
+  t1 |= t2 << 12;
+  state->r2 = t1 & 0x3ffc0ff;
+  t2 >>= 14;
+  t2 |= t3 << 18;
+  state->r3 = t2 & 0x3f03fff;
+  t3 >>= 8;
+  state->r4 = t3 & 0x00fffff;
+
+  state->s1 = state->r1 * 5;
+  state->s2 = state->r2 * 5;
+  state->s3 = state->r3 * 5;
+  state->s4 = state->r4 * 5;
+
+  // init state
+  state->h0 = 0;
+  state->h1 = 0;
+  state->h2 = 0;
+  state->h3 = 0;
+  state->h4 = 0;
+
+  state->buf_used = 0;
+  OPENSSL_memcpy(state->key, key + 16, sizeof(state->key));
+}
+
+void CRYPTO_poly1305_update(poly1305_state *statep, const uint8_t *in,
+                            size_t in_len) {
+  unsigned int i;
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_update_neon(statep, in, in_len);
+    return;
+  }
+#endif
+
+  if (state->buf_used) {
+    unsigned todo = 16 - state->buf_used;
+    if (todo > in_len) {
+      todo = (unsigned)in_len;
+    }
+    for (i = 0; i < todo; i++) {
+      state->buf[state->buf_used + i] = in[i];
+    }
+    state->buf_used += todo;
+    in_len -= todo;
+    in += todo;
+
+    if (state->buf_used == 16) {
+      poly1305_update(state, state->buf, 16);
+      state->buf_used = 0;
+    }
+  }
+
+  if (in_len >= 16) {
+    size_t todo = in_len & ~0xf;
+    poly1305_update(state, in, todo);
+    in += todo;
+    in_len &= 0xf;
+  }
+
+  if (in_len) {
+    for (i = 0; i < in_len; i++) {
+      state->buf[i] = in[i];
+    }
+    state->buf_used = (unsigned)in_len;
+  }
+}
+
+void CRYPTO_poly1305_finish(poly1305_state *statep, uint8_t mac[16]) {
+  struct poly1305_state_st *state = poly1305_aligned_state(statep);
+  uint64_t f0, f1, f2, f3;
+  uint32_t g0, g1, g2, g3, g4;
+  uint32_t b, nb;
+
+#if defined(OPENSSL_POLY1305_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    CRYPTO_poly1305_finish_neon(statep, mac);
+    return;
+  }
+#endif
+
+  if (state->buf_used) {
+    poly1305_update(state, state->buf, state->buf_used);
+  }
+
+  b = state->h0 >> 26;
+  state->h0 = state->h0 & 0x3ffffff;
+  state->h1 += b;
+  b = state->h1 >> 26;
+  state->h1 = state->h1 & 0x3ffffff;
+  state->h2 += b;
+  b = state->h2 >> 26;
+  state->h2 = state->h2 & 0x3ffffff;
+  state->h3 += b;
+  b = state->h3 >> 26;
+  state->h3 = state->h3 & 0x3ffffff;
+  state->h4 += b;
+  b = state->h4 >> 26;
+  state->h4 = state->h4 & 0x3ffffff;
+  state->h0 += b * 5;
+
+  g0 = state->h0 + 5;
+  b = g0 >> 26;
+  g0 &= 0x3ffffff;
+  g1 = state->h1 + b;
+  b = g1 >> 26;
+  g1 &= 0x3ffffff;
+  g2 = state->h2 + b;
+  b = g2 >> 26;
+  g2 &= 0x3ffffff;
+  g3 = state->h3 + b;
+  b = g3 >> 26;
+  g3 &= 0x3ffffff;
+  g4 = state->h4 + b - (1 << 26);
+
+  b = (g4 >> 31) - 1;
+  nb = ~b;
+  state->h0 = (state->h0 & nb) | (g0 & b);
+  state->h1 = (state->h1 & nb) | (g1 & b);
+  state->h2 = (state->h2 & nb) | (g2 & b);
+  state->h3 = (state->h3 & nb) | (g3 & b);
+  state->h4 = (state->h4 & nb) | (g4 & b);
+
+  f0 = ((state->h0) | (state->h1 << 26)) + (uint64_t)U8TO32_LE(&state->key[0]);
+  f1 = ((state->h1 >> 6) | (state->h2 << 20)) +
+       (uint64_t)U8TO32_LE(&state->key[4]);
+  f2 = ((state->h2 >> 12) | (state->h3 << 14)) +
+       (uint64_t)U8TO32_LE(&state->key[8]);
+  f3 = ((state->h3 >> 18) | (state->h4 << 8)) +
+       (uint64_t)U8TO32_LE(&state->key[12]);
+
+  U32TO8_LE(&mac[0], f0);
+  f1 += (f0 >> 32);
+  U32TO8_LE(&mac[4], f1);
+  f2 += (f1 >> 32);
+  U32TO8_LE(&mac[8], f2);
+  f3 += (f2 >> 32);
+  U32TO8_LE(&mac[12], f3);
+}
+
+#endif  // !BORINGSSL_HAS_UINT128 || !OPENSSL_X86_64
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c
new file mode 100644
index 0000000..4944278
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c	
@@ -0,0 +1,305 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation was taken from the public domain, neon2 version in
+// SUPERCOP by D. J. Bernstein and Peter Schwabe.
+
+#include <openssl_grpc/poly1305.h>
+
+#include <string.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+#if defined(OPENSSL_POLY1305_NEON)
+
+typedef struct {
+  uint32_t v[12];  // for alignment; only using 10
+} fe1305x2;
+
+#define addmulmod openssl_poly1305_neon2_addmulmod
+#define blocks openssl_poly1305_neon2_blocks
+
+extern void addmulmod(fe1305x2 *r, const fe1305x2 *x, const fe1305x2 *y,
+                      const fe1305x2 *c);
+
+extern int blocks(fe1305x2 *h, const fe1305x2 *precomp, const uint8_t *in,
+                  unsigned int inlen);
+
+static void freeze(fe1305x2 *r) {
+  int i;
+
+  uint32_t x0 = r->v[0];
+  uint32_t x1 = r->v[2];
+  uint32_t x2 = r->v[4];
+  uint32_t x3 = r->v[6];
+  uint32_t x4 = r->v[8];
+  uint32_t y0;
+  uint32_t y1;
+  uint32_t y2;
+  uint32_t y3;
+  uint32_t y4;
+  uint32_t swap;
+
+  for (i = 0; i < 3; ++i) {
+    x1 += x0 >> 26;
+    x0 &= 0x3ffffff;
+    x2 += x1 >> 26;
+    x1 &= 0x3ffffff;
+    x3 += x2 >> 26;
+    x2 &= 0x3ffffff;
+    x4 += x3 >> 26;
+    x3 &= 0x3ffffff;
+    x0 += 5 * (x4 >> 26);
+    x4 &= 0x3ffffff;
+  }
+
+  y0 = x0 + 5;
+  y1 = x1 + (y0 >> 26);
+  y0 &= 0x3ffffff;
+  y2 = x2 + (y1 >> 26);
+  y1 &= 0x3ffffff;
+  y3 = x3 + (y2 >> 26);
+  y2 &= 0x3ffffff;
+  y4 = x4 + (y3 >> 26);
+  y3 &= 0x3ffffff;
+  swap = -(y4 >> 26);
+  y4 &= 0x3ffffff;
+
+  y0 ^= x0;
+  y1 ^= x1;
+  y2 ^= x2;
+  y3 ^= x3;
+  y4 ^= x4;
+
+  y0 &= swap;
+  y1 &= swap;
+  y2 &= swap;
+  y3 &= swap;
+  y4 &= swap;
+
+  y0 ^= x0;
+  y1 ^= x1;
+  y2 ^= x2;
+  y3 ^= x3;
+  y4 ^= x4;
+
+  r->v[0] = y0;
+  r->v[2] = y1;
+  r->v[4] = y2;
+  r->v[6] = y3;
+  r->v[8] = y4;
+}
+
+static void store32(uint8_t out[4], uint32_t v) { OPENSSL_memcpy(out, &v, 4); }
+
+// load32 exists to avoid breaking strict aliasing rules in
+// fe1305x2_frombytearray.
+static uint32_t load32(const uint8_t t[4]) {
+  uint32_t tmp;
+  OPENSSL_memcpy(&tmp, t, sizeof(tmp));
+  return tmp;
+}
+
+static void fe1305x2_tobytearray(uint8_t r[16], fe1305x2 *x) {
+  uint32_t x0 = x->v[0];
+  uint32_t x1 = x->v[2];
+  uint32_t x2 = x->v[4];
+  uint32_t x3 = x->v[6];
+  uint32_t x4 = x->v[8];
+
+  x1 += x0 >> 26;
+  x0 &= 0x3ffffff;
+  x2 += x1 >> 26;
+  x1 &= 0x3ffffff;
+  x3 += x2 >> 26;
+  x2 &= 0x3ffffff;
+  x4 += x3 >> 26;
+  x3 &= 0x3ffffff;
+
+  store32(r, x0 + (x1 << 26));
+  store32(r + 4, (x1 >> 6) + (x2 << 20));
+  store32(r + 8, (x2 >> 12) + (x3 << 14));
+  store32(r + 12, (x3 >> 18) + (x4 << 8));
+}
+
+static void fe1305x2_frombytearray(fe1305x2 *r, const uint8_t *x, size_t xlen) {
+  unsigned i;
+  uint8_t t[17];
+
+  for (i = 0; (i < 16) && (i < xlen); i++) {
+    t[i] = x[i];
+  }
+  xlen -= i;
+  x += i;
+  t[i++] = 1;
+  for (; i < 17; i++) {
+    t[i] = 0;
+  }
+
+  r->v[0] = 0x3ffffff & load32(t);
+  r->v[2] = 0x3ffffff & (load32(t + 3) >> 2);
+  r->v[4] = 0x3ffffff & (load32(t + 6) >> 4);
+  r->v[6] = 0x3ffffff & (load32(t + 9) >> 6);
+  r->v[8] = load32(t + 13);
+
+  if (xlen) {
+    for (i = 0; (i < 16) && (i < xlen); i++) {
+      t[i] = x[i];
+    }
+    t[i++] = 1;
+    for (; i < 17; i++) {
+      t[i] = 0;
+    }
+
+    r->v[1] = 0x3ffffff & load32(t);
+    r->v[3] = 0x3ffffff & (load32(t + 3) >> 2);
+    r->v[5] = 0x3ffffff & (load32(t + 6) >> 4);
+    r->v[7] = 0x3ffffff & (load32(t + 9) >> 6);
+    r->v[9] = load32(t + 13);
+  } else {
+    r->v[1] = r->v[3] = r->v[5] = r->v[7] = r->v[9] = 0;
+  }
+}
+
+static const alignas(16) fe1305x2 zero;
+
+struct poly1305_state_st {
+  uint8_t data[sizeof(fe1305x2[5]) + 128];
+  uint8_t buf[32];
+  unsigned int buf_used;
+  uint8_t key[16];
+};
+
+void CRYPTO_poly1305_init_neon(poly1305_state *state, const uint8_t key[32]) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+  unsigned int j;
+
+  r->v[1] = r->v[0] = 0x3ffffff & load32(key);
+  r->v[3] = r->v[2] = 0x3ffff03 & (load32(key + 3) >> 2);
+  r->v[5] = r->v[4] = 0x3ffc0ff & (load32(key + 6) >> 4);
+  r->v[7] = r->v[6] = 0x3f03fff & (load32(key + 9) >> 6);
+  r->v[9] = r->v[8] = 0x00fffff & (load32(key + 12) >> 8);
+
+  for (j = 0; j < 10; j++) {
+    h->v[j] = 0;  // XXX: should fast-forward a bit
+  }
+
+  addmulmod(precomp, r, r, &zero);                  // precompute r^2
+  addmulmod(precomp + 1, precomp, precomp, &zero);  // precompute r^4
+
+  OPENSSL_memcpy(st->key, key + 16, 16);
+  st->buf_used = 0;
+}
+
+void CRYPTO_poly1305_update_neon(poly1305_state *state, const uint8_t *in,
+                                 size_t in_len) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+  unsigned int i;
+
+  if (st->buf_used) {
+    unsigned int todo = 32 - st->buf_used;
+    if (todo > in_len) {
+      todo = in_len;
+    }
+    for (i = 0; i < todo; i++) {
+      st->buf[st->buf_used + i] = in[i];
+    }
+    st->buf_used += todo;
+    in_len -= todo;
+    in += todo;
+
+    if (st->buf_used == sizeof(st->buf) && in_len) {
+      addmulmod(h, h, precomp, &zero);
+      fe1305x2_frombytearray(c, st->buf, sizeof(st->buf));
+      for (i = 0; i < 10; i++) {
+        h->v[i] += c->v[i];
+      }
+      st->buf_used = 0;
+    }
+  }
+
+  while (in_len > 32) {
+    unsigned int tlen = 1048576;
+    if (in_len < tlen) {
+      tlen = in_len;
+    }
+    tlen -= blocks(h, precomp, in, tlen);
+    in_len -= tlen;
+    in += tlen;
+  }
+
+  if (in_len) {
+    for (i = 0; i < in_len; i++) {
+      st->buf[i] = in[i];
+    }
+    st->buf_used = in_len;
+  }
+}
+
+void CRYPTO_poly1305_finish_neon(poly1305_state *state, uint8_t mac[16]) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+
+  addmulmod(h, h, precomp, &zero);
+
+  if (st->buf_used > 16) {
+    fe1305x2_frombytearray(c, st->buf, st->buf_used);
+    precomp->v[1] = r->v[1];
+    precomp->v[3] = r->v[3];
+    precomp->v[5] = r->v[5];
+    precomp->v[7] = r->v[7];
+    precomp->v[9] = r->v[9];
+    addmulmod(h, h, precomp, c);
+  } else if (st->buf_used > 0) {
+    fe1305x2_frombytearray(c, st->buf, st->buf_used);
+    r->v[1] = 1;
+    r->v[3] = 0;
+    r->v[5] = 0;
+    r->v[7] = 0;
+    r->v[9] = 0;
+    addmulmod(h, h, r, c);
+  }
+
+  h->v[0] += h->v[1];
+  h->v[2] += h->v[3];
+  h->v[4] += h->v[5];
+  h->v[6] += h->v[7];
+  h->v[8] += h->v[9];
+  freeze(h);
+
+  fe1305x2_frombytearray(c, st->key, 16);
+  c->v[8] ^= (1 << 24);
+
+  h->v[0] += c->v[0];
+  h->v[2] += c->v[2];
+  h->v[4] += c->v[4];
+  h->v[6] += c->v[6];
+  h->v[8] += c->v[8];
+  fe1305x2_tobytearray(mac, h);
+}
+
+#endif  // OPENSSL_POLY1305_NEON
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c.grpc_back
new file mode 100644
index 0000000..004221d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_arm.c.grpc_back	
@@ -0,0 +1,305 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation was taken from the public domain, neon2 version in
+// SUPERCOP by D. J. Bernstein and Peter Schwabe.
+
+#include <openssl/poly1305.h>
+
+#include <string.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+#if defined(OPENSSL_POLY1305_NEON)
+
+typedef struct {
+  uint32_t v[12];  // for alignment; only using 10
+} fe1305x2;
+
+#define addmulmod openssl_poly1305_neon2_addmulmod
+#define blocks openssl_poly1305_neon2_blocks
+
+extern void addmulmod(fe1305x2 *r, const fe1305x2 *x, const fe1305x2 *y,
+                      const fe1305x2 *c);
+
+extern int blocks(fe1305x2 *h, const fe1305x2 *precomp, const uint8_t *in,
+                  unsigned int inlen);
+
+static void freeze(fe1305x2 *r) {
+  int i;
+
+  uint32_t x0 = r->v[0];
+  uint32_t x1 = r->v[2];
+  uint32_t x2 = r->v[4];
+  uint32_t x3 = r->v[6];
+  uint32_t x4 = r->v[8];
+  uint32_t y0;
+  uint32_t y1;
+  uint32_t y2;
+  uint32_t y3;
+  uint32_t y4;
+  uint32_t swap;
+
+  for (i = 0; i < 3; ++i) {
+    x1 += x0 >> 26;
+    x0 &= 0x3ffffff;
+    x2 += x1 >> 26;
+    x1 &= 0x3ffffff;
+    x3 += x2 >> 26;
+    x2 &= 0x3ffffff;
+    x4 += x3 >> 26;
+    x3 &= 0x3ffffff;
+    x0 += 5 * (x4 >> 26);
+    x4 &= 0x3ffffff;
+  }
+
+  y0 = x0 + 5;
+  y1 = x1 + (y0 >> 26);
+  y0 &= 0x3ffffff;
+  y2 = x2 + (y1 >> 26);
+  y1 &= 0x3ffffff;
+  y3 = x3 + (y2 >> 26);
+  y2 &= 0x3ffffff;
+  y4 = x4 + (y3 >> 26);
+  y3 &= 0x3ffffff;
+  swap = -(y4 >> 26);
+  y4 &= 0x3ffffff;
+
+  y0 ^= x0;
+  y1 ^= x1;
+  y2 ^= x2;
+  y3 ^= x3;
+  y4 ^= x4;
+
+  y0 &= swap;
+  y1 &= swap;
+  y2 &= swap;
+  y3 &= swap;
+  y4 &= swap;
+
+  y0 ^= x0;
+  y1 ^= x1;
+  y2 ^= x2;
+  y3 ^= x3;
+  y4 ^= x4;
+
+  r->v[0] = y0;
+  r->v[2] = y1;
+  r->v[4] = y2;
+  r->v[6] = y3;
+  r->v[8] = y4;
+}
+
+static void store32(uint8_t out[4], uint32_t v) { OPENSSL_memcpy(out, &v, 4); }
+
+// load32 exists to avoid breaking strict aliasing rules in
+// fe1305x2_frombytearray.
+static uint32_t load32(const uint8_t t[4]) {
+  uint32_t tmp;
+  OPENSSL_memcpy(&tmp, t, sizeof(tmp));
+  return tmp;
+}
+
+static void fe1305x2_tobytearray(uint8_t r[16], fe1305x2 *x) {
+  uint32_t x0 = x->v[0];
+  uint32_t x1 = x->v[2];
+  uint32_t x2 = x->v[4];
+  uint32_t x3 = x->v[6];
+  uint32_t x4 = x->v[8];
+
+  x1 += x0 >> 26;
+  x0 &= 0x3ffffff;
+  x2 += x1 >> 26;
+  x1 &= 0x3ffffff;
+  x3 += x2 >> 26;
+  x2 &= 0x3ffffff;
+  x4 += x3 >> 26;
+  x3 &= 0x3ffffff;
+
+  store32(r, x0 + (x1 << 26));
+  store32(r + 4, (x1 >> 6) + (x2 << 20));
+  store32(r + 8, (x2 >> 12) + (x3 << 14));
+  store32(r + 12, (x3 >> 18) + (x4 << 8));
+}
+
+static void fe1305x2_frombytearray(fe1305x2 *r, const uint8_t *x, size_t xlen) {
+  unsigned i;
+  uint8_t t[17];
+
+  for (i = 0; (i < 16) && (i < xlen); i++) {
+    t[i] = x[i];
+  }
+  xlen -= i;
+  x += i;
+  t[i++] = 1;
+  for (; i < 17; i++) {
+    t[i] = 0;
+  }
+
+  r->v[0] = 0x3ffffff & load32(t);
+  r->v[2] = 0x3ffffff & (load32(t + 3) >> 2);
+  r->v[4] = 0x3ffffff & (load32(t + 6) >> 4);
+  r->v[6] = 0x3ffffff & (load32(t + 9) >> 6);
+  r->v[8] = load32(t + 13);
+
+  if (xlen) {
+    for (i = 0; (i < 16) && (i < xlen); i++) {
+      t[i] = x[i];
+    }
+    t[i++] = 1;
+    for (; i < 17; i++) {
+      t[i] = 0;
+    }
+
+    r->v[1] = 0x3ffffff & load32(t);
+    r->v[3] = 0x3ffffff & (load32(t + 3) >> 2);
+    r->v[5] = 0x3ffffff & (load32(t + 6) >> 4);
+    r->v[7] = 0x3ffffff & (load32(t + 9) >> 6);
+    r->v[9] = load32(t + 13);
+  } else {
+    r->v[1] = r->v[3] = r->v[5] = r->v[7] = r->v[9] = 0;
+  }
+}
+
+static const alignas(16) fe1305x2 zero;
+
+struct poly1305_state_st {
+  uint8_t data[sizeof(fe1305x2[5]) + 128];
+  uint8_t buf[32];
+  unsigned int buf_used;
+  uint8_t key[16];
+};
+
+void CRYPTO_poly1305_init_neon(poly1305_state *state, const uint8_t key[32]) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+  unsigned int j;
+
+  r->v[1] = r->v[0] = 0x3ffffff & load32(key);
+  r->v[3] = r->v[2] = 0x3ffff03 & (load32(key + 3) >> 2);
+  r->v[5] = r->v[4] = 0x3ffc0ff & (load32(key + 6) >> 4);
+  r->v[7] = r->v[6] = 0x3f03fff & (load32(key + 9) >> 6);
+  r->v[9] = r->v[8] = 0x00fffff & (load32(key + 12) >> 8);
+
+  for (j = 0; j < 10; j++) {
+    h->v[j] = 0;  // XXX: should fast-forward a bit
+  }
+
+  addmulmod(precomp, r, r, &zero);                  // precompute r^2
+  addmulmod(precomp + 1, precomp, precomp, &zero);  // precompute r^4
+
+  OPENSSL_memcpy(st->key, key + 16, 16);
+  st->buf_used = 0;
+}
+
+void CRYPTO_poly1305_update_neon(poly1305_state *state, const uint8_t *in,
+                                 size_t in_len) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+  unsigned int i;
+
+  if (st->buf_used) {
+    unsigned int todo = 32 - st->buf_used;
+    if (todo > in_len) {
+      todo = in_len;
+    }
+    for (i = 0; i < todo; i++) {
+      st->buf[st->buf_used + i] = in[i];
+    }
+    st->buf_used += todo;
+    in_len -= todo;
+    in += todo;
+
+    if (st->buf_used == sizeof(st->buf) && in_len) {
+      addmulmod(h, h, precomp, &zero);
+      fe1305x2_frombytearray(c, st->buf, sizeof(st->buf));
+      for (i = 0; i < 10; i++) {
+        h->v[i] += c->v[i];
+      }
+      st->buf_used = 0;
+    }
+  }
+
+  while (in_len > 32) {
+    unsigned int tlen = 1048576;
+    if (in_len < tlen) {
+      tlen = in_len;
+    }
+    tlen -= blocks(h, precomp, in, tlen);
+    in_len -= tlen;
+    in += tlen;
+  }
+
+  if (in_len) {
+    for (i = 0; i < in_len; i++) {
+      st->buf[i] = in[i];
+    }
+    st->buf_used = in_len;
+  }
+}
+
+void CRYPTO_poly1305_finish_neon(poly1305_state *state, uint8_t mac[16]) {
+  struct poly1305_state_st *st = (struct poly1305_state_st *)(state);
+  fe1305x2 *const r = (fe1305x2 *)(st->data + (15 & (-(int)st->data)));
+  fe1305x2 *const h = r + 1;
+  fe1305x2 *const c = h + 1;
+  fe1305x2 *const precomp = c + 1;
+
+  addmulmod(h, h, precomp, &zero);
+
+  if (st->buf_used > 16) {
+    fe1305x2_frombytearray(c, st->buf, st->buf_used);
+    precomp->v[1] = r->v[1];
+    precomp->v[3] = r->v[3];
+    precomp->v[5] = r->v[5];
+    precomp->v[7] = r->v[7];
+    precomp->v[9] = r->v[9];
+    addmulmod(h, h, precomp, c);
+  } else if (st->buf_used > 0) {
+    fe1305x2_frombytearray(c, st->buf, st->buf_used);
+    r->v[1] = 1;
+    r->v[3] = 0;
+    r->v[5] = 0;
+    r->v[7] = 0;
+    r->v[9] = 0;
+    addmulmod(h, h, r, c);
+  }
+
+  h->v[0] += h->v[1];
+  h->v[2] += h->v[3];
+  h->v[4] += h->v[5];
+  h->v[6] += h->v[7];
+  h->v[8] += h->v[9];
+  freeze(h);
+
+  fe1305x2_frombytearray(c, st->key, 16);
+  c->v[8] ^= (1 << 24);
+
+  h->v[0] += c->v[0];
+  h->v[2] += c->v[2];
+  h->v[4] += c->v[4];
+  h->v[6] += c->v[6];
+  h->v[8] += c->v[8];
+  fe1305x2_tobytearray(mac, h);
+}
+
+#endif  // OPENSSL_POLY1305_NEON
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c
new file mode 100644
index 0000000..81410f4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c	
@@ -0,0 +1,856 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation of poly1305 is by Andrew Moon
+// (https://github.com/floodyberry/poly1305-donna) and released as public
+// domain. It implements SIMD vectorization based on the algorithm described in
+// http://cr.yp.to/papers.html#neoncrypto. Unrolled to 2 powers, i.e. 64 byte
+// block size
+
+#include <openssl_grpc/poly1305.h>
+
+#include "../internal.h"
+
+
+#if defined(BORINGSSL_HAS_UINT128) && defined(OPENSSL_X86_64)
+
+#include <emmintrin.h>
+
+static uint32_t load_u32_le(const uint8_t in[4]) {
+  uint32_t ret;
+  OPENSSL_memcpy(&ret, in, 4);
+  return ret;
+}
+
+static uint64_t load_u64_le(const uint8_t in[8]) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, in, 8);
+  return ret;
+}
+
+static void store_u64_le(uint8_t out[8], uint64_t v) {
+  OPENSSL_memcpy(out, &v, 8);
+}
+
+typedef __m128i xmmi;
+
+static const alignas(16) uint32_t poly1305_x64_sse2_message_mask[4] = {
+    (1 << 26) - 1, 0, (1 << 26) - 1, 0};
+static const alignas(16) uint32_t poly1305_x64_sse2_5[4] = {5, 0, 5, 0};
+static const alignas(16) uint32_t poly1305_x64_sse2_1shl128[4] = {
+    (1 << 24), 0, (1 << 24), 0};
+
+static inline uint128_t add128(uint128_t a, uint128_t b) { return a + b; }
+
+static inline uint128_t add128_64(uint128_t a, uint64_t b) { return a + b; }
+
+static inline uint128_t mul64x64_128(uint64_t a, uint64_t b) {
+  return (uint128_t)a * b;
+}
+
+static inline uint64_t lo128(uint128_t a) { return (uint64_t)a; }
+
+static inline uint64_t shr128(uint128_t v, const int shift) {
+  return (uint64_t)(v >> shift);
+}
+
+static inline uint64_t shr128_pair(uint64_t hi, uint64_t lo, const int shift) {
+  return (uint64_t)((((uint128_t)hi << 64) | lo) >> shift);
+}
+
+typedef struct poly1305_power_t {
+  union {
+    xmmi v;
+    uint64_t u[2];
+    uint32_t d[4];
+  } R20, R21, R22, R23, R24, S21, S22, S23, S24;
+} poly1305_power;
+
+typedef struct poly1305_state_internal_t {
+  poly1305_power P[2]; /* 288 bytes, top 32 bit halves unused = 144
+                          bytes of free storage */
+  union {
+    xmmi H[5];  //  80 bytes
+    uint64_t HH[10];
+  };
+  // uint64_t r0,r1,r2;       [24 bytes]
+  // uint64_t pad0,pad1;      [16 bytes]
+  uint64_t started;        //   8 bytes
+  uint64_t leftover;       //   8 bytes
+  uint8_t buffer[64];      //  64 bytes
+} poly1305_state_internal; /* 448 bytes total + 63 bytes for
+                              alignment = 511 bytes raw */
+
+static inline poly1305_state_internal *poly1305_aligned_state(
+    poly1305_state *state) {
+  return (poly1305_state_internal *)(((uint64_t)state + 63) & ~63);
+}
+
+static inline size_t poly1305_min(size_t a, size_t b) {
+  return (a < b) ? a : b;
+}
+
+void CRYPTO_poly1305_init(poly1305_state *state, const uint8_t key[32]) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  poly1305_power *p;
+  uint64_t r0, r1, r2;
+  uint64_t t0, t1;
+
+  // clamp key
+  t0 = load_u64_le(key + 0);
+  t1 = load_u64_le(key + 8);
+  r0 = t0 & 0xffc0fffffff;
+  t0 >>= 44;
+  t0 |= t1 << 20;
+  r1 = t0 & 0xfffffc0ffff;
+  t1 >>= 24;
+  r2 = t1 & 0x00ffffffc0f;
+
+  // store r in un-used space of st->P[1]
+  p = &st->P[1];
+  p->R20.d[1] = (uint32_t)(r0);
+  p->R20.d[3] = (uint32_t)(r0 >> 32);
+  p->R21.d[1] = (uint32_t)(r1);
+  p->R21.d[3] = (uint32_t)(r1 >> 32);
+  p->R22.d[1] = (uint32_t)(r2);
+  p->R22.d[3] = (uint32_t)(r2 >> 32);
+
+  // store pad
+  p->R23.d[1] = load_u32_le(key + 16);
+  p->R23.d[3] = load_u32_le(key + 20);
+  p->R24.d[1] = load_u32_le(key + 24);
+  p->R24.d[3] = load_u32_le(key + 28);
+
+  // H = 0
+  st->H[0] = _mm_setzero_si128();
+  st->H[1] = _mm_setzero_si128();
+  st->H[2] = _mm_setzero_si128();
+  st->H[3] = _mm_setzero_si128();
+  st->H[4] = _mm_setzero_si128();
+
+  st->started = 0;
+  st->leftover = 0;
+}
+
+static void poly1305_first_block(poly1305_state_internal *st,
+                                 const uint8_t *m) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+  xmmi T5, T6;
+  poly1305_power *p;
+  uint128_t d[3];
+  uint64_t r0, r1, r2;
+  uint64_t r20, r21, r22, s22;
+  uint64_t pad0, pad1;
+  uint64_t c;
+  uint64_t i;
+
+  // pull out stored info
+  p = &st->P[1];
+
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+  pad0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
+  pad1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
+
+  // compute powers r^2,r^4
+  r20 = r0;
+  r21 = r1;
+  r22 = r2;
+  for (i = 0; i < 2; i++) {
+    s22 = r22 * (5 << 2);
+
+    d[0] = add128(mul64x64_128(r20, r20), mul64x64_128(r21 * 2, s22));
+    d[1] = add128(mul64x64_128(r22, s22), mul64x64_128(r20 * 2, r21));
+    d[2] = add128(mul64x64_128(r21, r21), mul64x64_128(r22 * 2, r20));
+
+    r20 = lo128(d[0]) & 0xfffffffffff;
+    c = shr128(d[0], 44);
+    d[1] = add128_64(d[1], c);
+    r21 = lo128(d[1]) & 0xfffffffffff;
+    c = shr128(d[1], 44);
+    d[2] = add128_64(d[2], c);
+    r22 = lo128(d[2]) & 0x3ffffffffff;
+    c = shr128(d[2], 42);
+    r20 += c * 5;
+    c = (r20 >> 44);
+    r20 = r20 & 0xfffffffffff;
+    r21 += c;
+
+    p->R20.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)(r20)&0x3ffffff),
+                                 _MM_SHUFFLE(1, 0, 1, 0));
+    p->R21.v = _mm_shuffle_epi32(
+        _mm_cvtsi32_si128((uint32_t)((r20 >> 26) | (r21 << 18)) & 0x3ffffff),
+        _MM_SHUFFLE(1, 0, 1, 0));
+    p->R22.v =
+        _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r21 >> 8)) & 0x3ffffff),
+                          _MM_SHUFFLE(1, 0, 1, 0));
+    p->R23.v = _mm_shuffle_epi32(
+        _mm_cvtsi32_si128((uint32_t)((r21 >> 34) | (r22 << 10)) & 0x3ffffff),
+        _MM_SHUFFLE(1, 0, 1, 0));
+    p->R24.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r22 >> 16))),
+                                 _MM_SHUFFLE(1, 0, 1, 0));
+    p->S21.v = _mm_mul_epu32(p->R21.v, FIVE);
+    p->S22.v = _mm_mul_epu32(p->R22.v, FIVE);
+    p->S23.v = _mm_mul_epu32(p->R23.v, FIVE);
+    p->S24.v = _mm_mul_epu32(p->R24.v, FIVE);
+    p--;
+  }
+
+  // put saved info back
+  p = &st->P[1];
+  p->R20.d[1] = (uint32_t)(r0);
+  p->R20.d[3] = (uint32_t)(r0 >> 32);
+  p->R21.d[1] = (uint32_t)(r1);
+  p->R21.d[3] = (uint32_t)(r1 >> 32);
+  p->R22.d[1] = (uint32_t)(r2);
+  p->R22.d[3] = (uint32_t)(r2 >> 32);
+  p->R23.d[1] = (uint32_t)(pad0);
+  p->R23.d[3] = (uint32_t)(pad0 >> 32);
+  p->R24.d[1] = (uint32_t)(pad1);
+  p->R24.d[3] = (uint32_t)(pad1 >> 32);
+
+  // H = [Mx,My]
+  T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                          _mm_loadl_epi64((const xmmi *)(m + 16)));
+  T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                          _mm_loadl_epi64((const xmmi *)(m + 24)));
+  st->H[0] = _mm_and_si128(MMASK, T5);
+  st->H[1] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+  T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+  st->H[2] = _mm_and_si128(MMASK, T5);
+  st->H[3] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+  st->H[4] = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+}
+
+static void poly1305_blocks(poly1305_state_internal *st, const uint8_t *m,
+                            size_t bytes) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+
+  poly1305_power *p;
+  xmmi H0, H1, H2, H3, H4;
+  xmmi T0, T1, T2, T3, T4, T5, T6;
+  xmmi M0, M1, M2, M3, M4;
+  xmmi C1, C2;
+
+  H0 = st->H[0];
+  H1 = st->H[1];
+  H2 = st->H[2];
+  H3 = st->H[3];
+  H4 = st->H[4];
+
+  while (bytes >= 64) {
+    // H *= [r^4,r^4]
+    p = &st->P[0];
+    T0 = _mm_mul_epu32(H0, p->R20.v);
+    T1 = _mm_mul_epu32(H0, p->R21.v);
+    T2 = _mm_mul_epu32(H0, p->R22.v);
+    T3 = _mm_mul_epu32(H0, p->R23.v);
+    T4 = _mm_mul_epu32(H0, p->R24.v);
+    T5 = _mm_mul_epu32(H1, p->S24.v);
+    T6 = _mm_mul_epu32(H1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H2, p->S23.v);
+    T6 = _mm_mul_epu32(H2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H3, p->S22.v);
+    T6 = _mm_mul_epu32(H3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H4, p->S21.v);
+    T6 = _mm_mul_epu32(H4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H1, p->R21.v);
+    T6 = _mm_mul_epu32(H1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H2, p->R20.v);
+    T6 = _mm_mul_epu32(H2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H3, p->S24.v);
+    T6 = _mm_mul_epu32(H3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H4, p->S23.v);
+    T6 = _mm_mul_epu32(H4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]*[r^2,r^2]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                            _mm_loadl_epi64((const xmmi *)(m + 16)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                            _mm_loadl_epi64((const xmmi *)(m + 24)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    p = &st->P[1];
+    T5 = _mm_mul_epu32(M0, p->R20.v);
+    T6 = _mm_mul_epu32(M0, p->R21.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M1, p->S24.v);
+    T6 = _mm_mul_epu32(M1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M2, p->S23.v);
+    T6 = _mm_mul_epu32(M2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M3, p->S22.v);
+    T6 = _mm_mul_epu32(M3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M4, p->S21.v);
+    T6 = _mm_mul_epu32(M4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M0, p->R22.v);
+    T6 = _mm_mul_epu32(M0, p->R23.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M1, p->R21.v);
+    T6 = _mm_mul_epu32(M1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M2, p->R20.v);
+    T6 = _mm_mul_epu32(M2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M3, p->S24.v);
+    T6 = _mm_mul_epu32(M3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M4, p->S23.v);
+    T6 = _mm_mul_epu32(M4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M0, p->R24.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 32)),
+                            _mm_loadl_epi64((const xmmi *)(m + 48)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 40)),
+                            _mm_loadl_epi64((const xmmi *)(m + 56)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    T0 = _mm_add_epi64(T0, M0);
+    T1 = _mm_add_epi64(T1, M1);
+    T2 = _mm_add_epi64(T2, M2);
+    T3 = _mm_add_epi64(T3, M3);
+    T4 = _mm_add_epi64(T4, M4);
+
+    // reduce
+    C1 = _mm_srli_epi64(T0, 26);
+    C2 = _mm_srli_epi64(T3, 26);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_and_si128(T3, MMASK);
+    T1 = _mm_add_epi64(T1, C1);
+    T4 = _mm_add_epi64(T4, C2);
+    C1 = _mm_srli_epi64(T1, 26);
+    C2 = _mm_srli_epi64(T4, 26);
+    T1 = _mm_and_si128(T1, MMASK);
+    T4 = _mm_and_si128(T4, MMASK);
+    T2 = _mm_add_epi64(T2, C1);
+    T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+    C1 = _mm_srli_epi64(T2, 26);
+    C2 = _mm_srli_epi64(T0, 26);
+    T2 = _mm_and_si128(T2, MMASK);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_add_epi64(T3, C1);
+    T1 = _mm_add_epi64(T1, C2);
+    C1 = _mm_srli_epi64(T3, 26);
+    T3 = _mm_and_si128(T3, MMASK);
+    T4 = _mm_add_epi64(T4, C1);
+
+    // H = (H*[r^4,r^4] + [Mx,My]*[r^2,r^2] + [Mx,My])
+    H0 = T0;
+    H1 = T1;
+    H2 = T2;
+    H3 = T3;
+    H4 = T4;
+
+    m += 64;
+    bytes -= 64;
+  }
+
+  st->H[0] = H0;
+  st->H[1] = H1;
+  st->H[2] = H2;
+  st->H[3] = H3;
+  st->H[4] = H4;
+}
+
+static size_t poly1305_combine(poly1305_state_internal *st, const uint8_t *m,
+                               size_t bytes) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+
+  poly1305_power *p;
+  xmmi H0, H1, H2, H3, H4;
+  xmmi M0, M1, M2, M3, M4;
+  xmmi T0, T1, T2, T3, T4, T5, T6;
+  xmmi C1, C2;
+
+  uint64_t r0, r1, r2;
+  uint64_t t0, t1, t2, t3, t4;
+  uint64_t c;
+  size_t consumed = 0;
+
+  H0 = st->H[0];
+  H1 = st->H[1];
+  H2 = st->H[2];
+  H3 = st->H[3];
+  H4 = st->H[4];
+
+  // p = [r^2,r^2]
+  p = &st->P[1];
+
+  if (bytes >= 32) {
+    // H *= [r^2,r^2]
+    T0 = _mm_mul_epu32(H0, p->R20.v);
+    T1 = _mm_mul_epu32(H0, p->R21.v);
+    T2 = _mm_mul_epu32(H0, p->R22.v);
+    T3 = _mm_mul_epu32(H0, p->R23.v);
+    T4 = _mm_mul_epu32(H0, p->R24.v);
+    T5 = _mm_mul_epu32(H1, p->S24.v);
+    T6 = _mm_mul_epu32(H1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H2, p->S23.v);
+    T6 = _mm_mul_epu32(H2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H3, p->S22.v);
+    T6 = _mm_mul_epu32(H3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H4, p->S21.v);
+    T6 = _mm_mul_epu32(H4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H1, p->R21.v);
+    T6 = _mm_mul_epu32(H1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H2, p->R20.v);
+    T6 = _mm_mul_epu32(H2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H3, p->S24.v);
+    T6 = _mm_mul_epu32(H3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H4, p->S23.v);
+    T6 = _mm_mul_epu32(H4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                            _mm_loadl_epi64((const xmmi *)(m + 16)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                            _mm_loadl_epi64((const xmmi *)(m + 24)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    T0 = _mm_add_epi64(T0, M0);
+    T1 = _mm_add_epi64(T1, M1);
+    T2 = _mm_add_epi64(T2, M2);
+    T3 = _mm_add_epi64(T3, M3);
+    T4 = _mm_add_epi64(T4, M4);
+
+    // reduce
+    C1 = _mm_srli_epi64(T0, 26);
+    C2 = _mm_srli_epi64(T3, 26);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_and_si128(T3, MMASK);
+    T1 = _mm_add_epi64(T1, C1);
+    T4 = _mm_add_epi64(T4, C2);
+    C1 = _mm_srli_epi64(T1, 26);
+    C2 = _mm_srli_epi64(T4, 26);
+    T1 = _mm_and_si128(T1, MMASK);
+    T4 = _mm_and_si128(T4, MMASK);
+    T2 = _mm_add_epi64(T2, C1);
+    T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+    C1 = _mm_srli_epi64(T2, 26);
+    C2 = _mm_srli_epi64(T0, 26);
+    T2 = _mm_and_si128(T2, MMASK);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_add_epi64(T3, C1);
+    T1 = _mm_add_epi64(T1, C2);
+    C1 = _mm_srli_epi64(T3, 26);
+    T3 = _mm_and_si128(T3, MMASK);
+    T4 = _mm_add_epi64(T4, C1);
+
+    // H = (H*[r^2,r^2] + [Mx,My])
+    H0 = T0;
+    H1 = T1;
+    H2 = T2;
+    H3 = T3;
+    H4 = T4;
+
+    consumed = 32;
+  }
+
+  // finalize, H *= [r^2,r]
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+
+  p->R20.d[2] = (uint32_t)(r0)&0x3ffffff;
+  p->R21.d[2] = (uint32_t)((r0 >> 26) | (r1 << 18)) & 0x3ffffff;
+  p->R22.d[2] = (uint32_t)((r1 >> 8)) & 0x3ffffff;
+  p->R23.d[2] = (uint32_t)((r1 >> 34) | (r2 << 10)) & 0x3ffffff;
+  p->R24.d[2] = (uint32_t)((r2 >> 16));
+  p->S21.d[2] = p->R21.d[2] * 5;
+  p->S22.d[2] = p->R22.d[2] * 5;
+  p->S23.d[2] = p->R23.d[2] * 5;
+  p->S24.d[2] = p->R24.d[2] * 5;
+
+  // H *= [r^2,r]
+  T0 = _mm_mul_epu32(H0, p->R20.v);
+  T1 = _mm_mul_epu32(H0, p->R21.v);
+  T2 = _mm_mul_epu32(H0, p->R22.v);
+  T3 = _mm_mul_epu32(H0, p->R23.v);
+  T4 = _mm_mul_epu32(H0, p->R24.v);
+  T5 = _mm_mul_epu32(H1, p->S24.v);
+  T6 = _mm_mul_epu32(H1, p->R20.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H2, p->S23.v);
+  T6 = _mm_mul_epu32(H2, p->S24.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H3, p->S22.v);
+  T6 = _mm_mul_epu32(H3, p->S23.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H4, p->S21.v);
+  T6 = _mm_mul_epu32(H4, p->S22.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H1, p->R21.v);
+  T6 = _mm_mul_epu32(H1, p->R22.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H2, p->R20.v);
+  T6 = _mm_mul_epu32(H2, p->R21.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H3, p->S24.v);
+  T6 = _mm_mul_epu32(H3, p->R20.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H4, p->S23.v);
+  T6 = _mm_mul_epu32(H4, p->S24.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H1, p->R23.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H2, p->R22.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H3, p->R21.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H4, p->R20.v);
+  T4 = _mm_add_epi64(T4, T5);
+
+  C1 = _mm_srli_epi64(T0, 26);
+  C2 = _mm_srli_epi64(T3, 26);
+  T0 = _mm_and_si128(T0, MMASK);
+  T3 = _mm_and_si128(T3, MMASK);
+  T1 = _mm_add_epi64(T1, C1);
+  T4 = _mm_add_epi64(T4, C2);
+  C1 = _mm_srli_epi64(T1, 26);
+  C2 = _mm_srli_epi64(T4, 26);
+  T1 = _mm_and_si128(T1, MMASK);
+  T4 = _mm_and_si128(T4, MMASK);
+  T2 = _mm_add_epi64(T2, C1);
+  T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+  C1 = _mm_srli_epi64(T2, 26);
+  C2 = _mm_srli_epi64(T0, 26);
+  T2 = _mm_and_si128(T2, MMASK);
+  T0 = _mm_and_si128(T0, MMASK);
+  T3 = _mm_add_epi64(T3, C1);
+  T1 = _mm_add_epi64(T1, C2);
+  C1 = _mm_srli_epi64(T3, 26);
+  T3 = _mm_and_si128(T3, MMASK);
+  T4 = _mm_add_epi64(T4, C1);
+
+  // H = H[0]+H[1]
+  H0 = _mm_add_epi64(T0, _mm_srli_si128(T0, 8));
+  H1 = _mm_add_epi64(T1, _mm_srli_si128(T1, 8));
+  H2 = _mm_add_epi64(T2, _mm_srli_si128(T2, 8));
+  H3 = _mm_add_epi64(T3, _mm_srli_si128(T3, 8));
+  H4 = _mm_add_epi64(T4, _mm_srli_si128(T4, 8));
+
+  t0 = _mm_cvtsi128_si32(H0);
+  c = (t0 >> 26);
+  t0 &= 0x3ffffff;
+  t1 = _mm_cvtsi128_si32(H1) + c;
+  c = (t1 >> 26);
+  t1 &= 0x3ffffff;
+  t2 = _mm_cvtsi128_si32(H2) + c;
+  c = (t2 >> 26);
+  t2 &= 0x3ffffff;
+  t3 = _mm_cvtsi128_si32(H3) + c;
+  c = (t3 >> 26);
+  t3 &= 0x3ffffff;
+  t4 = _mm_cvtsi128_si32(H4) + c;
+  c = (t4 >> 26);
+  t4 &= 0x3ffffff;
+  t0 = t0 + (c * 5);
+  c = (t0 >> 26);
+  t0 &= 0x3ffffff;
+  t1 = t1 + c;
+
+  st->HH[0] = ((t0) | (t1 << 26)) & UINT64_C(0xfffffffffff);
+  st->HH[1] = ((t1 >> 18) | (t2 << 8) | (t3 << 34)) & UINT64_C(0xfffffffffff);
+  st->HH[2] = ((t3 >> 10) | (t4 << 16)) & UINT64_C(0x3ffffffffff);
+
+  return consumed;
+}
+
+void CRYPTO_poly1305_update(poly1305_state *state, const uint8_t *m,
+                            size_t bytes) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  size_t want;
+
+  // Work around a C language bug. See https://crbug.com/1019588.
+  if (bytes == 0) {
+    return;
+  }
+
+  // need at least 32 initial bytes to start the accelerated branch
+  if (!st->started) {
+    if ((st->leftover == 0) && (bytes > 32)) {
+      poly1305_first_block(st, m);
+      m += 32;
+      bytes -= 32;
+    } else {
+      want = poly1305_min(32 - st->leftover, bytes);
+      OPENSSL_memcpy(st->buffer + st->leftover, m, want);
+      bytes -= want;
+      m += want;
+      st->leftover += want;
+      if ((st->leftover < 32) || (bytes == 0)) {
+        return;
+      }
+      poly1305_first_block(st, st->buffer);
+      st->leftover = 0;
+    }
+    st->started = 1;
+  }
+
+  // handle leftover
+  if (st->leftover) {
+    want = poly1305_min(64 - st->leftover, bytes);
+    OPENSSL_memcpy(st->buffer + st->leftover, m, want);
+    bytes -= want;
+    m += want;
+    st->leftover += want;
+    if (st->leftover < 64) {
+      return;
+    }
+    poly1305_blocks(st, st->buffer, 64);
+    st->leftover = 0;
+  }
+
+  // process 64 byte blocks
+  if (bytes >= 64) {
+    want = (bytes & ~63);
+    poly1305_blocks(st, m, want);
+    m += want;
+    bytes -= want;
+  }
+
+  if (bytes) {
+    OPENSSL_memcpy(st->buffer + st->leftover, m, bytes);
+    st->leftover += bytes;
+  }
+}
+
+void CRYPTO_poly1305_finish(poly1305_state *state, uint8_t mac[16]) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  size_t leftover = st->leftover;
+  uint8_t *m = st->buffer;
+  uint128_t d[3];
+  uint64_t h0, h1, h2;
+  uint64_t t0, t1;
+  uint64_t g0, g1, g2, c, nc;
+  uint64_t r0, r1, r2, s1, s2;
+  poly1305_power *p;
+
+  if (st->started) {
+    size_t consumed = poly1305_combine(st, m, leftover);
+    leftover -= consumed;
+    m += consumed;
+  }
+
+  // st->HH will either be 0 or have the combined result
+  h0 = st->HH[0];
+  h1 = st->HH[1];
+  h2 = st->HH[2];
+
+  p = &st->P[1];
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+  s1 = r1 * (5 << 2);
+  s2 = r2 * (5 << 2);
+
+  if (leftover < 16) {
+    goto poly1305_donna_atmost15bytes;
+  }
+
+poly1305_donna_atleast16bytes:
+  t0 = load_u64_le(m + 0);
+  t1 = load_u64_le(m + 8);
+  h0 += t0 & 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += t0 & 0xfffffffffff;
+  h2 += (t1 >> 24) | ((uint64_t)1 << 40);
+
+poly1305_donna_mul:
+  d[0] = add128(add128(mul64x64_128(h0, r0), mul64x64_128(h1, s2)),
+                mul64x64_128(h2, s1));
+  d[1] = add128(add128(mul64x64_128(h0, r1), mul64x64_128(h1, r0)),
+                mul64x64_128(h2, s2));
+  d[2] = add128(add128(mul64x64_128(h0, r2), mul64x64_128(h1, r1)),
+                mul64x64_128(h2, r0));
+  h0 = lo128(d[0]) & 0xfffffffffff;
+  c = shr128(d[0], 44);
+  d[1] = add128_64(d[1], c);
+  h1 = lo128(d[1]) & 0xfffffffffff;
+  c = shr128(d[1], 44);
+  d[2] = add128_64(d[2], c);
+  h2 = lo128(d[2]) & 0x3ffffffffff;
+  c = shr128(d[2], 42);
+  h0 += c * 5;
+
+  m += 16;
+  leftover -= 16;
+  if (leftover >= 16) {
+    goto poly1305_donna_atleast16bytes;
+  }
+
+// final bytes
+poly1305_donna_atmost15bytes:
+  if (!leftover) {
+    goto poly1305_donna_finish;
+  }
+
+  m[leftover++] = 1;
+  OPENSSL_memset(m + leftover, 0, 16 - leftover);
+  leftover = 16;
+
+  t0 = load_u64_le(m + 0);
+  t1 = load_u64_le(m + 8);
+  h0 += t0 & 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += t0 & 0xfffffffffff;
+  h2 += (t1 >> 24);
+
+  goto poly1305_donna_mul;
+
+poly1305_donna_finish:
+  c = (h0 >> 44);
+  h0 &= 0xfffffffffff;
+  h1 += c;
+  c = (h1 >> 44);
+  h1 &= 0xfffffffffff;
+  h2 += c;
+  c = (h2 >> 42);
+  h2 &= 0x3ffffffffff;
+  h0 += c * 5;
+
+  g0 = h0 + 5;
+  c = (g0 >> 44);
+  g0 &= 0xfffffffffff;
+  g1 = h1 + c;
+  c = (g1 >> 44);
+  g1 &= 0xfffffffffff;
+  g2 = h2 + c - ((uint64_t)1 << 42);
+
+  c = (g2 >> 63) - 1;
+  nc = ~c;
+  h0 = (h0 & nc) | (g0 & c);
+  h1 = (h1 & nc) | (g1 & c);
+  h2 = (h2 & nc) | (g2 & c);
+
+  // pad
+  t0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
+  t1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
+  h0 += (t0 & 0xfffffffffff);
+  c = (h0 >> 44);
+  h0 &= 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += (t0 & 0xfffffffffff) + c;
+  c = (h1 >> 44);
+  h1 &= 0xfffffffffff;
+  t1 = (t1 >> 24);
+  h2 += (t1)+c;
+
+  store_u64_le(mac + 0, ((h0) | (h1 << 44)));
+  store_u64_le(mac + 8, ((h1 >> 20) | (h2 << 24)));
+}
+
+#endif  // BORINGSSL_HAS_UINT128 && OPENSSL_X86_64
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c.grpc_back
new file mode 100644
index 0000000..29cd5c3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/poly1305/poly1305_vec.c.grpc_back	
@@ -0,0 +1,856 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This implementation of poly1305 is by Andrew Moon
+// (https://github.com/floodyberry/poly1305-donna) and released as public
+// domain. It implements SIMD vectorization based on the algorithm described in
+// http://cr.yp.to/papers.html#neoncrypto. Unrolled to 2 powers, i.e. 64 byte
+// block size
+
+#include <openssl/poly1305.h>
+
+#include "../internal.h"
+
+
+#if defined(BORINGSSL_HAS_UINT128) && defined(OPENSSL_X86_64)
+
+#include <emmintrin.h>
+
+static uint32_t load_u32_le(const uint8_t in[4]) {
+  uint32_t ret;
+  OPENSSL_memcpy(&ret, in, 4);
+  return ret;
+}
+
+static uint64_t load_u64_le(const uint8_t in[8]) {
+  uint64_t ret;
+  OPENSSL_memcpy(&ret, in, 8);
+  return ret;
+}
+
+static void store_u64_le(uint8_t out[8], uint64_t v) {
+  OPENSSL_memcpy(out, &v, 8);
+}
+
+typedef __m128i xmmi;
+
+static const alignas(16) uint32_t poly1305_x64_sse2_message_mask[4] = {
+    (1 << 26) - 1, 0, (1 << 26) - 1, 0};
+static const alignas(16) uint32_t poly1305_x64_sse2_5[4] = {5, 0, 5, 0};
+static const alignas(16) uint32_t poly1305_x64_sse2_1shl128[4] = {
+    (1 << 24), 0, (1 << 24), 0};
+
+static inline uint128_t add128(uint128_t a, uint128_t b) { return a + b; }
+
+static inline uint128_t add128_64(uint128_t a, uint64_t b) { return a + b; }
+
+static inline uint128_t mul64x64_128(uint64_t a, uint64_t b) {
+  return (uint128_t)a * b;
+}
+
+static inline uint64_t lo128(uint128_t a) { return (uint64_t)a; }
+
+static inline uint64_t shr128(uint128_t v, const int shift) {
+  return (uint64_t)(v >> shift);
+}
+
+static inline uint64_t shr128_pair(uint64_t hi, uint64_t lo, const int shift) {
+  return (uint64_t)((((uint128_t)hi << 64) | lo) >> shift);
+}
+
+typedef struct poly1305_power_t {
+  union {
+    xmmi v;
+    uint64_t u[2];
+    uint32_t d[4];
+  } R20, R21, R22, R23, R24, S21, S22, S23, S24;
+} poly1305_power;
+
+typedef struct poly1305_state_internal_t {
+  poly1305_power P[2]; /* 288 bytes, top 32 bit halves unused = 144
+                          bytes of free storage */
+  union {
+    xmmi H[5];  //  80 bytes
+    uint64_t HH[10];
+  };
+  // uint64_t r0,r1,r2;       [24 bytes]
+  // uint64_t pad0,pad1;      [16 bytes]
+  uint64_t started;        //   8 bytes
+  uint64_t leftover;       //   8 bytes
+  uint8_t buffer[64];      //  64 bytes
+} poly1305_state_internal; /* 448 bytes total + 63 bytes for
+                              alignment = 511 bytes raw */
+
+static inline poly1305_state_internal *poly1305_aligned_state(
+    poly1305_state *state) {
+  return (poly1305_state_internal *)(((uint64_t)state + 63) & ~63);
+}
+
+static inline size_t poly1305_min(size_t a, size_t b) {
+  return (a < b) ? a : b;
+}
+
+void CRYPTO_poly1305_init(poly1305_state *state, const uint8_t key[32]) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  poly1305_power *p;
+  uint64_t r0, r1, r2;
+  uint64_t t0, t1;
+
+  // clamp key
+  t0 = load_u64_le(key + 0);
+  t1 = load_u64_le(key + 8);
+  r0 = t0 & 0xffc0fffffff;
+  t0 >>= 44;
+  t0 |= t1 << 20;
+  r1 = t0 & 0xfffffc0ffff;
+  t1 >>= 24;
+  r2 = t1 & 0x00ffffffc0f;
+
+  // store r in un-used space of st->P[1]
+  p = &st->P[1];
+  p->R20.d[1] = (uint32_t)(r0);
+  p->R20.d[3] = (uint32_t)(r0 >> 32);
+  p->R21.d[1] = (uint32_t)(r1);
+  p->R21.d[3] = (uint32_t)(r1 >> 32);
+  p->R22.d[1] = (uint32_t)(r2);
+  p->R22.d[3] = (uint32_t)(r2 >> 32);
+
+  // store pad
+  p->R23.d[1] = load_u32_le(key + 16);
+  p->R23.d[3] = load_u32_le(key + 20);
+  p->R24.d[1] = load_u32_le(key + 24);
+  p->R24.d[3] = load_u32_le(key + 28);
+
+  // H = 0
+  st->H[0] = _mm_setzero_si128();
+  st->H[1] = _mm_setzero_si128();
+  st->H[2] = _mm_setzero_si128();
+  st->H[3] = _mm_setzero_si128();
+  st->H[4] = _mm_setzero_si128();
+
+  st->started = 0;
+  st->leftover = 0;
+}
+
+static void poly1305_first_block(poly1305_state_internal *st,
+                                 const uint8_t *m) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+  xmmi T5, T6;
+  poly1305_power *p;
+  uint128_t d[3];
+  uint64_t r0, r1, r2;
+  uint64_t r20, r21, r22, s22;
+  uint64_t pad0, pad1;
+  uint64_t c;
+  uint64_t i;
+
+  // pull out stored info
+  p = &st->P[1];
+
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+  pad0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
+  pad1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
+
+  // compute powers r^2,r^4
+  r20 = r0;
+  r21 = r1;
+  r22 = r2;
+  for (i = 0; i < 2; i++) {
+    s22 = r22 * (5 << 2);
+
+    d[0] = add128(mul64x64_128(r20, r20), mul64x64_128(r21 * 2, s22));
+    d[1] = add128(mul64x64_128(r22, s22), mul64x64_128(r20 * 2, r21));
+    d[2] = add128(mul64x64_128(r21, r21), mul64x64_128(r22 * 2, r20));
+
+    r20 = lo128(d[0]) & 0xfffffffffff;
+    c = shr128(d[0], 44);
+    d[1] = add128_64(d[1], c);
+    r21 = lo128(d[1]) & 0xfffffffffff;
+    c = shr128(d[1], 44);
+    d[2] = add128_64(d[2], c);
+    r22 = lo128(d[2]) & 0x3ffffffffff;
+    c = shr128(d[2], 42);
+    r20 += c * 5;
+    c = (r20 >> 44);
+    r20 = r20 & 0xfffffffffff;
+    r21 += c;
+
+    p->R20.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)(r20)&0x3ffffff),
+                                 _MM_SHUFFLE(1, 0, 1, 0));
+    p->R21.v = _mm_shuffle_epi32(
+        _mm_cvtsi32_si128((uint32_t)((r20 >> 26) | (r21 << 18)) & 0x3ffffff),
+        _MM_SHUFFLE(1, 0, 1, 0));
+    p->R22.v =
+        _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r21 >> 8)) & 0x3ffffff),
+                          _MM_SHUFFLE(1, 0, 1, 0));
+    p->R23.v = _mm_shuffle_epi32(
+        _mm_cvtsi32_si128((uint32_t)((r21 >> 34) | (r22 << 10)) & 0x3ffffff),
+        _MM_SHUFFLE(1, 0, 1, 0));
+    p->R24.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r22 >> 16))),
+                                 _MM_SHUFFLE(1, 0, 1, 0));
+    p->S21.v = _mm_mul_epu32(p->R21.v, FIVE);
+    p->S22.v = _mm_mul_epu32(p->R22.v, FIVE);
+    p->S23.v = _mm_mul_epu32(p->R23.v, FIVE);
+    p->S24.v = _mm_mul_epu32(p->R24.v, FIVE);
+    p--;
+  }
+
+  // put saved info back
+  p = &st->P[1];
+  p->R20.d[1] = (uint32_t)(r0);
+  p->R20.d[3] = (uint32_t)(r0 >> 32);
+  p->R21.d[1] = (uint32_t)(r1);
+  p->R21.d[3] = (uint32_t)(r1 >> 32);
+  p->R22.d[1] = (uint32_t)(r2);
+  p->R22.d[3] = (uint32_t)(r2 >> 32);
+  p->R23.d[1] = (uint32_t)(pad0);
+  p->R23.d[3] = (uint32_t)(pad0 >> 32);
+  p->R24.d[1] = (uint32_t)(pad1);
+  p->R24.d[3] = (uint32_t)(pad1 >> 32);
+
+  // H = [Mx,My]
+  T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                          _mm_loadl_epi64((const xmmi *)(m + 16)));
+  T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                          _mm_loadl_epi64((const xmmi *)(m + 24)));
+  st->H[0] = _mm_and_si128(MMASK, T5);
+  st->H[1] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+  T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+  st->H[2] = _mm_and_si128(MMASK, T5);
+  st->H[3] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+  st->H[4] = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+}
+
+static void poly1305_blocks(poly1305_state_internal *st, const uint8_t *m,
+                            size_t bytes) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+
+  poly1305_power *p;
+  xmmi H0, H1, H2, H3, H4;
+  xmmi T0, T1, T2, T3, T4, T5, T6;
+  xmmi M0, M1, M2, M3, M4;
+  xmmi C1, C2;
+
+  H0 = st->H[0];
+  H1 = st->H[1];
+  H2 = st->H[2];
+  H3 = st->H[3];
+  H4 = st->H[4];
+
+  while (bytes >= 64) {
+    // H *= [r^4,r^4]
+    p = &st->P[0];
+    T0 = _mm_mul_epu32(H0, p->R20.v);
+    T1 = _mm_mul_epu32(H0, p->R21.v);
+    T2 = _mm_mul_epu32(H0, p->R22.v);
+    T3 = _mm_mul_epu32(H0, p->R23.v);
+    T4 = _mm_mul_epu32(H0, p->R24.v);
+    T5 = _mm_mul_epu32(H1, p->S24.v);
+    T6 = _mm_mul_epu32(H1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H2, p->S23.v);
+    T6 = _mm_mul_epu32(H2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H3, p->S22.v);
+    T6 = _mm_mul_epu32(H3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H4, p->S21.v);
+    T6 = _mm_mul_epu32(H4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H1, p->R21.v);
+    T6 = _mm_mul_epu32(H1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H2, p->R20.v);
+    T6 = _mm_mul_epu32(H2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H3, p->S24.v);
+    T6 = _mm_mul_epu32(H3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H4, p->S23.v);
+    T6 = _mm_mul_epu32(H4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]*[r^2,r^2]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                            _mm_loadl_epi64((const xmmi *)(m + 16)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                            _mm_loadl_epi64((const xmmi *)(m + 24)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    p = &st->P[1];
+    T5 = _mm_mul_epu32(M0, p->R20.v);
+    T6 = _mm_mul_epu32(M0, p->R21.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M1, p->S24.v);
+    T6 = _mm_mul_epu32(M1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M2, p->S23.v);
+    T6 = _mm_mul_epu32(M2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M3, p->S22.v);
+    T6 = _mm_mul_epu32(M3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M4, p->S21.v);
+    T6 = _mm_mul_epu32(M4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(M0, p->R22.v);
+    T6 = _mm_mul_epu32(M0, p->R23.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M1, p->R21.v);
+    T6 = _mm_mul_epu32(M1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M2, p->R20.v);
+    T6 = _mm_mul_epu32(M2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M3, p->S24.v);
+    T6 = _mm_mul_epu32(M3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M4, p->S23.v);
+    T6 = _mm_mul_epu32(M4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(M0, p->R24.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(M4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 32)),
+                            _mm_loadl_epi64((const xmmi *)(m + 48)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 40)),
+                            _mm_loadl_epi64((const xmmi *)(m + 56)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    T0 = _mm_add_epi64(T0, M0);
+    T1 = _mm_add_epi64(T1, M1);
+    T2 = _mm_add_epi64(T2, M2);
+    T3 = _mm_add_epi64(T3, M3);
+    T4 = _mm_add_epi64(T4, M4);
+
+    // reduce
+    C1 = _mm_srli_epi64(T0, 26);
+    C2 = _mm_srli_epi64(T3, 26);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_and_si128(T3, MMASK);
+    T1 = _mm_add_epi64(T1, C1);
+    T4 = _mm_add_epi64(T4, C2);
+    C1 = _mm_srli_epi64(T1, 26);
+    C2 = _mm_srli_epi64(T4, 26);
+    T1 = _mm_and_si128(T1, MMASK);
+    T4 = _mm_and_si128(T4, MMASK);
+    T2 = _mm_add_epi64(T2, C1);
+    T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+    C1 = _mm_srli_epi64(T2, 26);
+    C2 = _mm_srli_epi64(T0, 26);
+    T2 = _mm_and_si128(T2, MMASK);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_add_epi64(T3, C1);
+    T1 = _mm_add_epi64(T1, C2);
+    C1 = _mm_srli_epi64(T3, 26);
+    T3 = _mm_and_si128(T3, MMASK);
+    T4 = _mm_add_epi64(T4, C1);
+
+    // H = (H*[r^4,r^4] + [Mx,My]*[r^2,r^2] + [Mx,My])
+    H0 = T0;
+    H1 = T1;
+    H2 = T2;
+    H3 = T3;
+    H4 = T4;
+
+    m += 64;
+    bytes -= 64;
+  }
+
+  st->H[0] = H0;
+  st->H[1] = H1;
+  st->H[2] = H2;
+  st->H[3] = H3;
+  st->H[4] = H4;
+}
+
+static size_t poly1305_combine(poly1305_state_internal *st, const uint8_t *m,
+                               size_t bytes) {
+  const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
+  const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
+  const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
+
+  poly1305_power *p;
+  xmmi H0, H1, H2, H3, H4;
+  xmmi M0, M1, M2, M3, M4;
+  xmmi T0, T1, T2, T3, T4, T5, T6;
+  xmmi C1, C2;
+
+  uint64_t r0, r1, r2;
+  uint64_t t0, t1, t2, t3, t4;
+  uint64_t c;
+  size_t consumed = 0;
+
+  H0 = st->H[0];
+  H1 = st->H[1];
+  H2 = st->H[2];
+  H3 = st->H[3];
+  H4 = st->H[4];
+
+  // p = [r^2,r^2]
+  p = &st->P[1];
+
+  if (bytes >= 32) {
+    // H *= [r^2,r^2]
+    T0 = _mm_mul_epu32(H0, p->R20.v);
+    T1 = _mm_mul_epu32(H0, p->R21.v);
+    T2 = _mm_mul_epu32(H0, p->R22.v);
+    T3 = _mm_mul_epu32(H0, p->R23.v);
+    T4 = _mm_mul_epu32(H0, p->R24.v);
+    T5 = _mm_mul_epu32(H1, p->S24.v);
+    T6 = _mm_mul_epu32(H1, p->R20.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H2, p->S23.v);
+    T6 = _mm_mul_epu32(H2, p->S24.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H3, p->S22.v);
+    T6 = _mm_mul_epu32(H3, p->S23.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H4, p->S21.v);
+    T6 = _mm_mul_epu32(H4, p->S22.v);
+    T0 = _mm_add_epi64(T0, T5);
+    T1 = _mm_add_epi64(T1, T6);
+    T5 = _mm_mul_epu32(H1, p->R21.v);
+    T6 = _mm_mul_epu32(H1, p->R22.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H2, p->R20.v);
+    T6 = _mm_mul_epu32(H2, p->R21.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H3, p->S24.v);
+    T6 = _mm_mul_epu32(H3, p->R20.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H4, p->S23.v);
+    T6 = _mm_mul_epu32(H4, p->S24.v);
+    T2 = _mm_add_epi64(T2, T5);
+    T3 = _mm_add_epi64(T3, T6);
+    T5 = _mm_mul_epu32(H1, p->R23.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H2, p->R22.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H3, p->R21.v);
+    T4 = _mm_add_epi64(T4, T5);
+    T5 = _mm_mul_epu32(H4, p->R20.v);
+    T4 = _mm_add_epi64(T4, T5);
+
+    // H += [Mx,My]
+    T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
+                            _mm_loadl_epi64((const xmmi *)(m + 16)));
+    T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
+                            _mm_loadl_epi64((const xmmi *)(m + 24)));
+    M0 = _mm_and_si128(MMASK, T5);
+    M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
+    M2 = _mm_and_si128(MMASK, T5);
+    M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
+    M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
+
+    T0 = _mm_add_epi64(T0, M0);
+    T1 = _mm_add_epi64(T1, M1);
+    T2 = _mm_add_epi64(T2, M2);
+    T3 = _mm_add_epi64(T3, M3);
+    T4 = _mm_add_epi64(T4, M4);
+
+    // reduce
+    C1 = _mm_srli_epi64(T0, 26);
+    C2 = _mm_srli_epi64(T3, 26);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_and_si128(T3, MMASK);
+    T1 = _mm_add_epi64(T1, C1);
+    T4 = _mm_add_epi64(T4, C2);
+    C1 = _mm_srli_epi64(T1, 26);
+    C2 = _mm_srli_epi64(T4, 26);
+    T1 = _mm_and_si128(T1, MMASK);
+    T4 = _mm_and_si128(T4, MMASK);
+    T2 = _mm_add_epi64(T2, C1);
+    T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+    C1 = _mm_srli_epi64(T2, 26);
+    C2 = _mm_srli_epi64(T0, 26);
+    T2 = _mm_and_si128(T2, MMASK);
+    T0 = _mm_and_si128(T0, MMASK);
+    T3 = _mm_add_epi64(T3, C1);
+    T1 = _mm_add_epi64(T1, C2);
+    C1 = _mm_srli_epi64(T3, 26);
+    T3 = _mm_and_si128(T3, MMASK);
+    T4 = _mm_add_epi64(T4, C1);
+
+    // H = (H*[r^2,r^2] + [Mx,My])
+    H0 = T0;
+    H1 = T1;
+    H2 = T2;
+    H3 = T3;
+    H4 = T4;
+
+    consumed = 32;
+  }
+
+  // finalize, H *= [r^2,r]
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+
+  p->R20.d[2] = (uint32_t)(r0)&0x3ffffff;
+  p->R21.d[2] = (uint32_t)((r0 >> 26) | (r1 << 18)) & 0x3ffffff;
+  p->R22.d[2] = (uint32_t)((r1 >> 8)) & 0x3ffffff;
+  p->R23.d[2] = (uint32_t)((r1 >> 34) | (r2 << 10)) & 0x3ffffff;
+  p->R24.d[2] = (uint32_t)((r2 >> 16));
+  p->S21.d[2] = p->R21.d[2] * 5;
+  p->S22.d[2] = p->R22.d[2] * 5;
+  p->S23.d[2] = p->R23.d[2] * 5;
+  p->S24.d[2] = p->R24.d[2] * 5;
+
+  // H *= [r^2,r]
+  T0 = _mm_mul_epu32(H0, p->R20.v);
+  T1 = _mm_mul_epu32(H0, p->R21.v);
+  T2 = _mm_mul_epu32(H0, p->R22.v);
+  T3 = _mm_mul_epu32(H0, p->R23.v);
+  T4 = _mm_mul_epu32(H0, p->R24.v);
+  T5 = _mm_mul_epu32(H1, p->S24.v);
+  T6 = _mm_mul_epu32(H1, p->R20.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H2, p->S23.v);
+  T6 = _mm_mul_epu32(H2, p->S24.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H3, p->S22.v);
+  T6 = _mm_mul_epu32(H3, p->S23.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H4, p->S21.v);
+  T6 = _mm_mul_epu32(H4, p->S22.v);
+  T0 = _mm_add_epi64(T0, T5);
+  T1 = _mm_add_epi64(T1, T6);
+  T5 = _mm_mul_epu32(H1, p->R21.v);
+  T6 = _mm_mul_epu32(H1, p->R22.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H2, p->R20.v);
+  T6 = _mm_mul_epu32(H2, p->R21.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H3, p->S24.v);
+  T6 = _mm_mul_epu32(H3, p->R20.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H4, p->S23.v);
+  T6 = _mm_mul_epu32(H4, p->S24.v);
+  T2 = _mm_add_epi64(T2, T5);
+  T3 = _mm_add_epi64(T3, T6);
+  T5 = _mm_mul_epu32(H1, p->R23.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H2, p->R22.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H3, p->R21.v);
+  T4 = _mm_add_epi64(T4, T5);
+  T5 = _mm_mul_epu32(H4, p->R20.v);
+  T4 = _mm_add_epi64(T4, T5);
+
+  C1 = _mm_srli_epi64(T0, 26);
+  C2 = _mm_srli_epi64(T3, 26);
+  T0 = _mm_and_si128(T0, MMASK);
+  T3 = _mm_and_si128(T3, MMASK);
+  T1 = _mm_add_epi64(T1, C1);
+  T4 = _mm_add_epi64(T4, C2);
+  C1 = _mm_srli_epi64(T1, 26);
+  C2 = _mm_srli_epi64(T4, 26);
+  T1 = _mm_and_si128(T1, MMASK);
+  T4 = _mm_and_si128(T4, MMASK);
+  T2 = _mm_add_epi64(T2, C1);
+  T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
+  C1 = _mm_srli_epi64(T2, 26);
+  C2 = _mm_srli_epi64(T0, 26);
+  T2 = _mm_and_si128(T2, MMASK);
+  T0 = _mm_and_si128(T0, MMASK);
+  T3 = _mm_add_epi64(T3, C1);
+  T1 = _mm_add_epi64(T1, C2);
+  C1 = _mm_srli_epi64(T3, 26);
+  T3 = _mm_and_si128(T3, MMASK);
+  T4 = _mm_add_epi64(T4, C1);
+
+  // H = H[0]+H[1]
+  H0 = _mm_add_epi64(T0, _mm_srli_si128(T0, 8));
+  H1 = _mm_add_epi64(T1, _mm_srli_si128(T1, 8));
+  H2 = _mm_add_epi64(T2, _mm_srli_si128(T2, 8));
+  H3 = _mm_add_epi64(T3, _mm_srli_si128(T3, 8));
+  H4 = _mm_add_epi64(T4, _mm_srli_si128(T4, 8));
+
+  t0 = _mm_cvtsi128_si32(H0);
+  c = (t0 >> 26);
+  t0 &= 0x3ffffff;
+  t1 = _mm_cvtsi128_si32(H1) + c;
+  c = (t1 >> 26);
+  t1 &= 0x3ffffff;
+  t2 = _mm_cvtsi128_si32(H2) + c;
+  c = (t2 >> 26);
+  t2 &= 0x3ffffff;
+  t3 = _mm_cvtsi128_si32(H3) + c;
+  c = (t3 >> 26);
+  t3 &= 0x3ffffff;
+  t4 = _mm_cvtsi128_si32(H4) + c;
+  c = (t4 >> 26);
+  t4 &= 0x3ffffff;
+  t0 = t0 + (c * 5);
+  c = (t0 >> 26);
+  t0 &= 0x3ffffff;
+  t1 = t1 + c;
+
+  st->HH[0] = ((t0) | (t1 << 26)) & UINT64_C(0xfffffffffff);
+  st->HH[1] = ((t1 >> 18) | (t2 << 8) | (t3 << 34)) & UINT64_C(0xfffffffffff);
+  st->HH[2] = ((t3 >> 10) | (t4 << 16)) & UINT64_C(0x3ffffffffff);
+
+  return consumed;
+}
+
+void CRYPTO_poly1305_update(poly1305_state *state, const uint8_t *m,
+                            size_t bytes) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  size_t want;
+
+  // Work around a C language bug. See https://crbug.com/1019588.
+  if (bytes == 0) {
+    return;
+  }
+
+  // need at least 32 initial bytes to start the accelerated branch
+  if (!st->started) {
+    if ((st->leftover == 0) && (bytes > 32)) {
+      poly1305_first_block(st, m);
+      m += 32;
+      bytes -= 32;
+    } else {
+      want = poly1305_min(32 - st->leftover, bytes);
+      OPENSSL_memcpy(st->buffer + st->leftover, m, want);
+      bytes -= want;
+      m += want;
+      st->leftover += want;
+      if ((st->leftover < 32) || (bytes == 0)) {
+        return;
+      }
+      poly1305_first_block(st, st->buffer);
+      st->leftover = 0;
+    }
+    st->started = 1;
+  }
+
+  // handle leftover
+  if (st->leftover) {
+    want = poly1305_min(64 - st->leftover, bytes);
+    OPENSSL_memcpy(st->buffer + st->leftover, m, want);
+    bytes -= want;
+    m += want;
+    st->leftover += want;
+    if (st->leftover < 64) {
+      return;
+    }
+    poly1305_blocks(st, st->buffer, 64);
+    st->leftover = 0;
+  }
+
+  // process 64 byte blocks
+  if (bytes >= 64) {
+    want = (bytes & ~63);
+    poly1305_blocks(st, m, want);
+    m += want;
+    bytes -= want;
+  }
+
+  if (bytes) {
+    OPENSSL_memcpy(st->buffer + st->leftover, m, bytes);
+    st->leftover += bytes;
+  }
+}
+
+void CRYPTO_poly1305_finish(poly1305_state *state, uint8_t mac[16]) {
+  poly1305_state_internal *st = poly1305_aligned_state(state);
+  size_t leftover = st->leftover;
+  uint8_t *m = st->buffer;
+  uint128_t d[3];
+  uint64_t h0, h1, h2;
+  uint64_t t0, t1;
+  uint64_t g0, g1, g2, c, nc;
+  uint64_t r0, r1, r2, s1, s2;
+  poly1305_power *p;
+
+  if (st->started) {
+    size_t consumed = poly1305_combine(st, m, leftover);
+    leftover -= consumed;
+    m += consumed;
+  }
+
+  // st->HH will either be 0 or have the combined result
+  h0 = st->HH[0];
+  h1 = st->HH[1];
+  h2 = st->HH[2];
+
+  p = &st->P[1];
+  r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
+  r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
+  r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
+  s1 = r1 * (5 << 2);
+  s2 = r2 * (5 << 2);
+
+  if (leftover < 16) {
+    goto poly1305_donna_atmost15bytes;
+  }
+
+poly1305_donna_atleast16bytes:
+  t0 = load_u64_le(m + 0);
+  t1 = load_u64_le(m + 8);
+  h0 += t0 & 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += t0 & 0xfffffffffff;
+  h2 += (t1 >> 24) | ((uint64_t)1 << 40);
+
+poly1305_donna_mul:
+  d[0] = add128(add128(mul64x64_128(h0, r0), mul64x64_128(h1, s2)),
+                mul64x64_128(h2, s1));
+  d[1] = add128(add128(mul64x64_128(h0, r1), mul64x64_128(h1, r0)),
+                mul64x64_128(h2, s2));
+  d[2] = add128(add128(mul64x64_128(h0, r2), mul64x64_128(h1, r1)),
+                mul64x64_128(h2, r0));
+  h0 = lo128(d[0]) & 0xfffffffffff;
+  c = shr128(d[0], 44);
+  d[1] = add128_64(d[1], c);
+  h1 = lo128(d[1]) & 0xfffffffffff;
+  c = shr128(d[1], 44);
+  d[2] = add128_64(d[2], c);
+  h2 = lo128(d[2]) & 0x3ffffffffff;
+  c = shr128(d[2], 42);
+  h0 += c * 5;
+
+  m += 16;
+  leftover -= 16;
+  if (leftover >= 16) {
+    goto poly1305_donna_atleast16bytes;
+  }
+
+// final bytes
+poly1305_donna_atmost15bytes:
+  if (!leftover) {
+    goto poly1305_donna_finish;
+  }
+
+  m[leftover++] = 1;
+  OPENSSL_memset(m + leftover, 0, 16 - leftover);
+  leftover = 16;
+
+  t0 = load_u64_le(m + 0);
+  t1 = load_u64_le(m + 8);
+  h0 += t0 & 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += t0 & 0xfffffffffff;
+  h2 += (t1 >> 24);
+
+  goto poly1305_donna_mul;
+
+poly1305_donna_finish:
+  c = (h0 >> 44);
+  h0 &= 0xfffffffffff;
+  h1 += c;
+  c = (h1 >> 44);
+  h1 &= 0xfffffffffff;
+  h2 += c;
+  c = (h2 >> 42);
+  h2 &= 0x3ffffffffff;
+  h0 += c * 5;
+
+  g0 = h0 + 5;
+  c = (g0 >> 44);
+  g0 &= 0xfffffffffff;
+  g1 = h1 + c;
+  c = (g1 >> 44);
+  g1 &= 0xfffffffffff;
+  g2 = h2 + c - ((uint64_t)1 << 42);
+
+  c = (g2 >> 63) - 1;
+  nc = ~c;
+  h0 = (h0 & nc) | (g0 & c);
+  h1 = (h1 & nc) | (g1 & c);
+  h2 = (h2 & nc) | (g2 & c);
+
+  // pad
+  t0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
+  t1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
+  h0 += (t0 & 0xfffffffffff);
+  c = (h0 >> 44);
+  h0 &= 0xfffffffffff;
+  t0 = shr128_pair(t1, t0, 44);
+  h1 += (t0 & 0xfffffffffff) + c;
+  c = (h1 >> 44);
+  h1 &= 0xfffffffffff;
+  t1 = (t1 >> 24);
+  h2 += (t1)+c;
+
+  store_u64_le(mac + 0, ((h0) | (h1 << 44)));
+  store_u64_le(mac + 8, ((h1 >> 20) | (h2 << 24)));
+}
+
+#endif  // BORINGSSL_HAS_UINT128 && OPENSSL_X86_64
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h
new file mode 100644
index 0000000..b8ae032
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h	
@@ -0,0 +1,45 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POOL_INTERNAL_H
+#define OPENSSL_HEADER_POOL_INTERNAL_H
+
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+DECLARE_LHASH_OF(CRYPTO_BUFFER)
+
+struct crypto_buffer_st {
+  CRYPTO_BUFFER_POOL *pool;
+  uint8_t *data;
+  size_t len;
+  CRYPTO_refcount_t references;
+};
+
+struct crypto_buffer_pool_st {
+  LHASH_OF(CRYPTO_BUFFER) *bufs;
+  CRYPTO_MUTEX lock;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POOL_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h.grpc_back
new file mode 100644
index 0000000..ed91de6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/internal.h.grpc_back	
@@ -0,0 +1,45 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POOL_INTERNAL_H
+#define OPENSSL_HEADER_POOL_INTERNAL_H
+
+#include <openssl/lhash.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+DECLARE_LHASH_OF(CRYPTO_BUFFER)
+
+struct crypto_buffer_st {
+  CRYPTO_BUFFER_POOL *pool;
+  uint8_t *data;
+  size_t len;
+  CRYPTO_refcount_t references;
+};
+
+struct crypto_buffer_pool_st {
+  LHASH_OF(CRYPTO_BUFFER) *bufs;
+  CRYPTO_MUTEX lock;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POOL_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c
new file mode 100644
index 0000000..e457856
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c	
@@ -0,0 +1,220 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/pool.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+DEFINE_LHASH_OF(CRYPTO_BUFFER)
+
+static uint32_t CRYPTO_BUFFER_hash(const CRYPTO_BUFFER *buf) {
+  return OPENSSL_hash32(buf->data, buf->len);
+}
+
+static int CRYPTO_BUFFER_cmp(const CRYPTO_BUFFER *a, const CRYPTO_BUFFER *b) {
+  if (a->len != b->len) {
+    return 1;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->len);
+}
+
+CRYPTO_BUFFER_POOL* CRYPTO_BUFFER_POOL_new(void) {
+  CRYPTO_BUFFER_POOL *pool = OPENSSL_malloc(sizeof(CRYPTO_BUFFER_POOL));
+  if (pool == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(pool, 0, sizeof(CRYPTO_BUFFER_POOL));
+  pool->bufs = lh_CRYPTO_BUFFER_new(CRYPTO_BUFFER_hash, CRYPTO_BUFFER_cmp);
+  if (pool->bufs == NULL) {
+    OPENSSL_free(pool);
+    return NULL;
+  }
+
+  CRYPTO_MUTEX_init(&pool->lock);
+
+  return pool;
+}
+
+void CRYPTO_BUFFER_POOL_free(CRYPTO_BUFFER_POOL *pool) {
+  if (pool == NULL) {
+    return;
+  }
+
+#if !defined(NDEBUG)
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  assert(lh_CRYPTO_BUFFER_num_items(pool->bufs) == 0);
+  CRYPTO_MUTEX_unlock_write(&pool->lock);
+#endif
+
+  lh_CRYPTO_BUFFER_free(pool->bufs);
+  CRYPTO_MUTEX_cleanup(&pool->lock);
+  OPENSSL_free(pool);
+}
+
+CRYPTO_BUFFER *CRYPTO_BUFFER_new(const uint8_t *data, size_t len,
+                                 CRYPTO_BUFFER_POOL *pool) {
+  if (pool != NULL) {
+    CRYPTO_BUFFER tmp;
+    tmp.data = (uint8_t *) data;
+    tmp.len = len;
+
+    CRYPTO_MUTEX_lock_read(&pool->lock);
+    CRYPTO_BUFFER *const duplicate =
+        lh_CRYPTO_BUFFER_retrieve(pool->bufs, &tmp);
+    if (duplicate != NULL) {
+      CRYPTO_refcount_inc(&duplicate->references);
+    }
+    CRYPTO_MUTEX_unlock_read(&pool->lock);
+
+    if (duplicate != NULL) {
+      return duplicate;
+    }
+  }
+
+  CRYPTO_BUFFER *const buf = OPENSSL_malloc(sizeof(CRYPTO_BUFFER));
+  if (buf == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(buf, 0, sizeof(CRYPTO_BUFFER));
+
+  buf->data = OPENSSL_memdup(data, len);
+  if (len != 0 && buf->data == NULL) {
+    OPENSSL_free(buf);
+    return NULL;
+  }
+
+  buf->len = len;
+  buf->references = 1;
+
+  if (pool == NULL) {
+    return buf;
+  }
+
+  buf->pool = pool;
+
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  CRYPTO_BUFFER *duplicate = lh_CRYPTO_BUFFER_retrieve(pool->bufs, buf);
+  int inserted = 0;
+  if (duplicate == NULL) {
+    CRYPTO_BUFFER *old = NULL;
+    inserted = lh_CRYPTO_BUFFER_insert(pool->bufs, &old, buf);
+    assert(old == NULL);
+  } else {
+    CRYPTO_refcount_inc(&duplicate->references);
+  }
+  CRYPTO_MUTEX_unlock_write(&pool->lock);
+
+  if (!inserted) {
+    // We raced to insert |buf| into the pool and lost, or else there was an
+    // error inserting.
+    OPENSSL_free(buf->data);
+    OPENSSL_free(buf);
+    return duplicate;
+  }
+
+  return buf;
+}
+
+CRYPTO_BUFFER *CRYPTO_BUFFER_alloc(uint8_t **out_data, size_t len) {
+  CRYPTO_BUFFER *const buf = OPENSSL_malloc(sizeof(CRYPTO_BUFFER));
+  if (buf == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(buf, 0, sizeof(CRYPTO_BUFFER));
+
+  buf->data = OPENSSL_malloc(len);
+  if (len != 0 && buf->data == NULL) {
+    OPENSSL_free(buf);
+    return NULL;
+  }
+  buf->len = len;
+  buf->references = 1;
+
+  *out_data = buf->data;
+  return buf;
+}
+
+CRYPTO_BUFFER* CRYPTO_BUFFER_new_from_CBS(CBS *cbs, CRYPTO_BUFFER_POOL *pool) {
+  return CRYPTO_BUFFER_new(CBS_data(cbs), CBS_len(cbs), pool);
+}
+
+void CRYPTO_BUFFER_free(CRYPTO_BUFFER *buf) {
+  if (buf == NULL) {
+    return;
+  }
+
+  CRYPTO_BUFFER_POOL *const pool = buf->pool;
+  if (pool == NULL) {
+    if (CRYPTO_refcount_dec_and_test_zero(&buf->references)) {
+      // If a reference count of zero is observed, there cannot be a reference
+      // from any pool to this buffer and thus we are able to free this
+      // buffer.
+      OPENSSL_free(buf->data);
+      OPENSSL_free(buf);
+    }
+
+    return;
+  }
+
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  if (!CRYPTO_refcount_dec_and_test_zero(&buf->references)) {
+    CRYPTO_MUTEX_unlock_write(&buf->pool->lock);
+    return;
+  }
+
+  // We have an exclusive lock on the pool, therefore no concurrent lookups can
+  // find this buffer and increment the reference count. Thus, if the count is
+  // zero there are and can never be any more references and thus we can free
+  // this buffer.
+  void *found = lh_CRYPTO_BUFFER_delete(pool->bufs, buf);
+  assert(found != NULL);
+  assert(found == buf);
+  (void)found;
+  CRYPTO_MUTEX_unlock_write(&buf->pool->lock);
+  OPENSSL_free(buf->data);
+  OPENSSL_free(buf);
+}
+
+int CRYPTO_BUFFER_up_ref(CRYPTO_BUFFER *buf) {
+  // This is safe in the case that |buf->pool| is NULL because it's just
+  // standard reference counting in that case.
+  //
+  // This is also safe if |buf->pool| is non-NULL because, if it were racing
+  // with |CRYPTO_BUFFER_free| then the two callers must have independent
+  // references already and so the reference count will never hit zero.
+  CRYPTO_refcount_inc(&buf->references);
+  return 1;
+}
+
+const uint8_t *CRYPTO_BUFFER_data(const CRYPTO_BUFFER *buf) {
+  return buf->data;
+}
+
+size_t CRYPTO_BUFFER_len(const CRYPTO_BUFFER *buf) {
+  return buf->len;
+}
+
+void CRYPTO_BUFFER_init_CBS(const CRYPTO_BUFFER *buf, CBS *out) {
+  CBS_init(out, buf->data, buf->len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c.grpc_back
new file mode 100644
index 0000000..917e43c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/pool/pool.c.grpc_back	
@@ -0,0 +1,220 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/pool.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+DEFINE_LHASH_OF(CRYPTO_BUFFER)
+
+static uint32_t CRYPTO_BUFFER_hash(const CRYPTO_BUFFER *buf) {
+  return OPENSSL_hash32(buf->data, buf->len);
+}
+
+static int CRYPTO_BUFFER_cmp(const CRYPTO_BUFFER *a, const CRYPTO_BUFFER *b) {
+  if (a->len != b->len) {
+    return 1;
+  }
+  return OPENSSL_memcmp(a->data, b->data, a->len);
+}
+
+CRYPTO_BUFFER_POOL* CRYPTO_BUFFER_POOL_new(void) {
+  CRYPTO_BUFFER_POOL *pool = OPENSSL_malloc(sizeof(CRYPTO_BUFFER_POOL));
+  if (pool == NULL) {
+    return NULL;
+  }
+
+  OPENSSL_memset(pool, 0, sizeof(CRYPTO_BUFFER_POOL));
+  pool->bufs = lh_CRYPTO_BUFFER_new(CRYPTO_BUFFER_hash, CRYPTO_BUFFER_cmp);
+  if (pool->bufs == NULL) {
+    OPENSSL_free(pool);
+    return NULL;
+  }
+
+  CRYPTO_MUTEX_init(&pool->lock);
+
+  return pool;
+}
+
+void CRYPTO_BUFFER_POOL_free(CRYPTO_BUFFER_POOL *pool) {
+  if (pool == NULL) {
+    return;
+  }
+
+#if !defined(NDEBUG)
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  assert(lh_CRYPTO_BUFFER_num_items(pool->bufs) == 0);
+  CRYPTO_MUTEX_unlock_write(&pool->lock);
+#endif
+
+  lh_CRYPTO_BUFFER_free(pool->bufs);
+  CRYPTO_MUTEX_cleanup(&pool->lock);
+  OPENSSL_free(pool);
+}
+
+CRYPTO_BUFFER *CRYPTO_BUFFER_new(const uint8_t *data, size_t len,
+                                 CRYPTO_BUFFER_POOL *pool) {
+  if (pool != NULL) {
+    CRYPTO_BUFFER tmp;
+    tmp.data = (uint8_t *) data;
+    tmp.len = len;
+
+    CRYPTO_MUTEX_lock_read(&pool->lock);
+    CRYPTO_BUFFER *const duplicate =
+        lh_CRYPTO_BUFFER_retrieve(pool->bufs, &tmp);
+    if (duplicate != NULL) {
+      CRYPTO_refcount_inc(&duplicate->references);
+    }
+    CRYPTO_MUTEX_unlock_read(&pool->lock);
+
+    if (duplicate != NULL) {
+      return duplicate;
+    }
+  }
+
+  CRYPTO_BUFFER *const buf = OPENSSL_malloc(sizeof(CRYPTO_BUFFER));
+  if (buf == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(buf, 0, sizeof(CRYPTO_BUFFER));
+
+  buf->data = OPENSSL_memdup(data, len);
+  if (len != 0 && buf->data == NULL) {
+    OPENSSL_free(buf);
+    return NULL;
+  }
+
+  buf->len = len;
+  buf->references = 1;
+
+  if (pool == NULL) {
+    return buf;
+  }
+
+  buf->pool = pool;
+
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  CRYPTO_BUFFER *duplicate = lh_CRYPTO_BUFFER_retrieve(pool->bufs, buf);
+  int inserted = 0;
+  if (duplicate == NULL) {
+    CRYPTO_BUFFER *old = NULL;
+    inserted = lh_CRYPTO_BUFFER_insert(pool->bufs, &old, buf);
+    assert(old == NULL);
+  } else {
+    CRYPTO_refcount_inc(&duplicate->references);
+  }
+  CRYPTO_MUTEX_unlock_write(&pool->lock);
+
+  if (!inserted) {
+    // We raced to insert |buf| into the pool and lost, or else there was an
+    // error inserting.
+    OPENSSL_free(buf->data);
+    OPENSSL_free(buf);
+    return duplicate;
+  }
+
+  return buf;
+}
+
+CRYPTO_BUFFER *CRYPTO_BUFFER_alloc(uint8_t **out_data, size_t len) {
+  CRYPTO_BUFFER *const buf = OPENSSL_malloc(sizeof(CRYPTO_BUFFER));
+  if (buf == NULL) {
+    return NULL;
+  }
+  OPENSSL_memset(buf, 0, sizeof(CRYPTO_BUFFER));
+
+  buf->data = OPENSSL_malloc(len);
+  if (len != 0 && buf->data == NULL) {
+    OPENSSL_free(buf);
+    return NULL;
+  }
+  buf->len = len;
+  buf->references = 1;
+
+  *out_data = buf->data;
+  return buf;
+}
+
+CRYPTO_BUFFER* CRYPTO_BUFFER_new_from_CBS(CBS *cbs, CRYPTO_BUFFER_POOL *pool) {
+  return CRYPTO_BUFFER_new(CBS_data(cbs), CBS_len(cbs), pool);
+}
+
+void CRYPTO_BUFFER_free(CRYPTO_BUFFER *buf) {
+  if (buf == NULL) {
+    return;
+  }
+
+  CRYPTO_BUFFER_POOL *const pool = buf->pool;
+  if (pool == NULL) {
+    if (CRYPTO_refcount_dec_and_test_zero(&buf->references)) {
+      // If a reference count of zero is observed, there cannot be a reference
+      // from any pool to this buffer and thus we are able to free this
+      // buffer.
+      OPENSSL_free(buf->data);
+      OPENSSL_free(buf);
+    }
+
+    return;
+  }
+
+  CRYPTO_MUTEX_lock_write(&pool->lock);
+  if (!CRYPTO_refcount_dec_and_test_zero(&buf->references)) {
+    CRYPTO_MUTEX_unlock_write(&buf->pool->lock);
+    return;
+  }
+
+  // We have an exclusive lock on the pool, therefore no concurrent lookups can
+  // find this buffer and increment the reference count. Thus, if the count is
+  // zero there are and can never be any more references and thus we can free
+  // this buffer.
+  void *found = lh_CRYPTO_BUFFER_delete(pool->bufs, buf);
+  assert(found != NULL);
+  assert(found == buf);
+  (void)found;
+  CRYPTO_MUTEX_unlock_write(&buf->pool->lock);
+  OPENSSL_free(buf->data);
+  OPENSSL_free(buf);
+}
+
+int CRYPTO_BUFFER_up_ref(CRYPTO_BUFFER *buf) {
+  // This is safe in the case that |buf->pool| is NULL because it's just
+  // standard reference counting in that case.
+  //
+  // This is also safe if |buf->pool| is non-NULL because, if it were racing
+  // with |CRYPTO_BUFFER_free| then the two callers must have independent
+  // references already and so the reference count will never hit zero.
+  CRYPTO_refcount_inc(&buf->references);
+  return 1;
+}
+
+const uint8_t *CRYPTO_BUFFER_data(const CRYPTO_BUFFER *buf) {
+  return buf->data;
+}
+
+size_t CRYPTO_BUFFER_len(const CRYPTO_BUFFER *buf) {
+  return buf->len;
+}
+
+void CRYPTO_BUFFER_init_CBS(const CRYPTO_BUFFER *buf, CBS *out) {
+  CBS_init(out, buf->data, buf->len);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c
new file mode 100644
index 0000000..bbb16e0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c	
@@ -0,0 +1,56 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <string.h>
+
+#include <openssl_grpc/chacha.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rand/internal.h"
+
+
+// g_num_calls is the number of calls to |CRYPTO_sysrand| that have occurred.
+//
+// This is intentionally not thread-safe. If the fuzzer mode is ever used in a
+// multi-threaded program, replace this with a thread-local. (A mutex would not
+// be deterministic.)
+static uint64_t g_num_calls = 0;
+
+void RAND_reset_for_fuzzing(void) { g_num_calls = 0; }
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  static const uint8_t kZeroKey[32];
+
+  uint8_t nonce[12];
+  OPENSSL_memset(nonce, 0, sizeof(nonce));
+  OPENSSL_memcpy(nonce, &g_num_calls, sizeof(g_num_calls));
+
+  OPENSSL_memset(out, 0, requested);
+  CRYPTO_chacha_20(out, out, requested, kZeroKey, nonce, 0);
+  g_num_calls++;
+}
+
+void CRYPTO_sysrand_for_seed(uint8_t *out, size_t requested) {
+  CRYPTO_sysrand(out, requested);
+}
+
+void CRYPTO_sysrand_if_available(uint8_t *out, size_t requested) {
+  CRYPTO_sysrand(out, requested);
+}
+
+#endif  // BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c.grpc_back
new file mode 100644
index 0000000..34547ea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/deterministic.c.grpc_back	
@@ -0,0 +1,56 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <string.h>
+
+#include <openssl/chacha.h>
+
+#include "../internal.h"
+#include "../fipsmodule/rand/internal.h"
+
+
+// g_num_calls is the number of calls to |CRYPTO_sysrand| that have occurred.
+//
+// This is intentionally not thread-safe. If the fuzzer mode is ever used in a
+// multi-threaded program, replace this with a thread-local. (A mutex would not
+// be deterministic.)
+static uint64_t g_num_calls = 0;
+
+void RAND_reset_for_fuzzing(void) { g_num_calls = 0; }
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  static const uint8_t kZeroKey[32];
+
+  uint8_t nonce[12];
+  OPENSSL_memset(nonce, 0, sizeof(nonce));
+  OPENSSL_memcpy(nonce, &g_num_calls, sizeof(g_num_calls));
+
+  OPENSSL_memset(out, 0, requested);
+  CRYPTO_chacha_20(out, out, requested, kZeroKey, nonce, 0);
+  g_num_calls++;
+}
+
+void CRYPTO_sysrand_for_seed(uint8_t *out, size_t requested) {
+  CRYPTO_sysrand(out, requested);
+}
+
+void CRYPTO_sysrand_if_available(uint8_t *out, size_t requested) {
+  CRYPTO_sysrand(out, requested);
+}
+
+#endif  // BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c
new file mode 100644
index 0000000..bd90472
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c	
@@ -0,0 +1,46 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#include <stdlib.h>
+
+#include "../fipsmodule/rand/internal.h"
+
+
+// g_buffering_enabled is true if fork-unsafe buffering has been enabled.
+static int g_buffering_enabled = 0;
+
+// g_lock protects |g_buffering_enabled|.
+static struct CRYPTO_STATIC_MUTEX g_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+#if !defined(OPENSSL_WINDOWS)
+void RAND_enable_fork_unsafe_buffering(int fd) {
+  // We no longer support setting the file-descriptor with this function.
+  if (fd != -1) {
+    abort();
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_write(&g_lock);
+  g_buffering_enabled = 1;
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_lock);
+}
+#endif
+
+int rand_fork_unsafe_buffering_enabled(void) {
+  CRYPTO_STATIC_MUTEX_lock_read(&g_lock);
+  const int ret = g_buffering_enabled;
+  CRYPTO_STATIC_MUTEX_unlock_read(&g_lock);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c.grpc_back
new file mode 100644
index 0000000..0f1ecec
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/forkunsafe.c.grpc_back	
@@ -0,0 +1,46 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#include <stdlib.h>
+
+#include "../fipsmodule/rand/internal.h"
+
+
+// g_buffering_enabled is true if fork-unsafe buffering has been enabled.
+static int g_buffering_enabled = 0;
+
+// g_lock protects |g_buffering_enabled|.
+static struct CRYPTO_STATIC_MUTEX g_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+#if !defined(OPENSSL_WINDOWS)
+void RAND_enable_fork_unsafe_buffering(int fd) {
+  // We no longer support setting the file-descriptor with this function.
+  if (fd != -1) {
+    abort();
+  }
+
+  CRYPTO_STATIC_MUTEX_lock_write(&g_lock);
+  g_buffering_enabled = 1;
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_lock);
+}
+#endif
+
+int rand_fork_unsafe_buffering_enabled(void) {
+  CRYPTO_STATIC_MUTEX_lock_read(&g_lock);
+  const int ret = g_buffering_enabled;
+  CRYPTO_STATIC_MUTEX_unlock_read(&g_lock);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c
new file mode 100644
index 0000000..95aa311
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c	
@@ -0,0 +1,30 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#if defined(OPENSSL_FUCHSIA) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <limits.h>
+#include <stdlib.h>
+
+#include <zircon/syscalls.h>
+
+#include "../fipsmodule/rand/internal.h"
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  zx_cprng_draw(out, requested);
+}
+
+#endif  // OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c.grpc_back
new file mode 100644
index 0000000..0514d80
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/fuchsia.c.grpc_back	
@@ -0,0 +1,30 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#if defined(OPENSSL_FUCHSIA) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <limits.h>
+#include <stdlib.h>
+
+#include <zircon/syscalls.h>
+
+#include "../fipsmodule/rand/internal.h"
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  zx_cprng_draw(out, requested);
+}
+
+#endif  // OPENSSL_FUCHSIA && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c
new file mode 100644
index 0000000..7c3c66f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c	
@@ -0,0 +1,70 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#include <limits.h>
+
+
+void RAND_seed(const void *buf, int num) {
+  // OpenSSH calls |RAND_seed| before jailing on the assumption that any needed
+  // file descriptors etc will be opened.
+  uint8_t unused;
+  RAND_bytes(&unused, sizeof(unused));
+}
+
+int RAND_load_file(const char *path, long num) {
+  if (num < 0) {  // read the "whole file"
+    return 1;
+  } else if (num <= INT_MAX) {
+    return (int) num;
+  } else {
+    return INT_MAX;
+  }
+}
+
+const char *RAND_file_name(char *buf, size_t num) { return NULL; }
+
+void RAND_add(const void *buf, int num, double entropy) {}
+
+int RAND_egd(const char *path) {
+  return 255;
+}
+
+int RAND_poll(void) {
+  return 1;
+}
+
+int RAND_status(void) {
+  return 1;
+}
+
+static const struct rand_meth_st kSSLeayMethod = {
+  RAND_seed,
+  RAND_bytes,
+  RAND_cleanup,
+  RAND_add,
+  RAND_pseudo_bytes,
+  RAND_status,
+};
+
+RAND_METHOD *RAND_SSLeay(void) {
+  return (RAND_METHOD*) &kSSLeayMethod;
+}
+
+const RAND_METHOD *RAND_get_rand_method(void) { return RAND_SSLeay(); }
+
+void RAND_set_rand_method(const RAND_METHOD *method) {}
+
+void RAND_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c.grpc_back
new file mode 100644
index 0000000..bed9e1e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/rand_extra.c.grpc_back	
@@ -0,0 +1,70 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#include <limits.h>
+
+
+void RAND_seed(const void *buf, int num) {
+  // OpenSSH calls |RAND_seed| before jailing on the assumption that any needed
+  // file descriptors etc will be opened.
+  uint8_t unused;
+  RAND_bytes(&unused, sizeof(unused));
+}
+
+int RAND_load_file(const char *path, long num) {
+  if (num < 0) {  // read the "whole file"
+    return 1;
+  } else if (num <= INT_MAX) {
+    return (int) num;
+  } else {
+    return INT_MAX;
+  }
+}
+
+const char *RAND_file_name(char *buf, size_t num) { return NULL; }
+
+void RAND_add(const void *buf, int num, double entropy) {}
+
+int RAND_egd(const char *path) {
+  return 255;
+}
+
+int RAND_poll(void) {
+  return 1;
+}
+
+int RAND_status(void) {
+  return 1;
+}
+
+static const struct rand_meth_st kSSLeayMethod = {
+  RAND_seed,
+  RAND_bytes,
+  RAND_cleanup,
+  RAND_add,
+  RAND_pseudo_bytes,
+  RAND_status,
+};
+
+RAND_METHOD *RAND_SSLeay(void) {
+  return (RAND_METHOD*) &kSSLeayMethod;
+}
+
+const RAND_METHOD *RAND_get_rand_method(void) { return RAND_SSLeay(); }
+
+void RAND_set_rand_method(const RAND_METHOD *method) {}
+
+void RAND_cleanup(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c
new file mode 100644
index 0000000..c524633
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/rand.h>
+
+#if defined(OPENSSL_WINDOWS) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <limits.h>
+#include <stdlib.h>
+
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+
+#include <windows.h>
+
+// #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036.  See the
+// "Community Additions" comment on MSDN here:
+// http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx
+#define SystemFunction036 NTAPI SystemFunction036
+#include <ntsecapi.h>
+#undef SystemFunction036
+
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+#include "../fipsmodule/rand/internal.h"
+
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  while (requested > 0) {
+    ULONG output_bytes_this_pass = ULONG_MAX;
+    if (requested < output_bytes_this_pass) {
+      output_bytes_this_pass = (ULONG)requested;
+    }
+    if (RtlGenRandom(out, output_bytes_this_pass) == FALSE) {
+      abort();
+    }
+    requested -= output_bytes_this_pass;
+    out += output_bytes_this_pass;
+  }
+  return;
+}
+
+#endif  // OPENSSL_WINDOWS && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c.grpc_back
new file mode 100644
index 0000000..c955587
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rand_extra/windows.c.grpc_back	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#if defined(OPENSSL_WINDOWS) && !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+
+#include <limits.h>
+#include <stdlib.h>
+
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+
+#include <windows.h>
+
+// #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036.  See the
+// "Community Additions" comment on MSDN here:
+// http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx
+#define SystemFunction036 NTAPI SystemFunction036
+#include <ntsecapi.h>
+#undef SystemFunction036
+
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+#include "../fipsmodule/rand/internal.h"
+
+
+void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+  while (requested > 0) {
+    ULONG output_bytes_this_pass = ULONG_MAX;
+    if (requested < output_bytes_this_pass) {
+      output_bytes_this_pass = (ULONG)requested;
+    }
+    if (RtlGenRandom(out, output_bytes_this_pass) == FALSE) {
+      abort();
+    }
+    requested -= output_bytes_this_pass;
+    out += output_bytes_this_pass;
+  }
+  return;
+}
+
+#endif  // OPENSSL_WINDOWS && !BORINGSSL_UNSAFE_DETERMINISTIC_MODE
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c
new file mode 100644
index 0000000..0fb6339
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c	
@@ -0,0 +1,98 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/rc4.h>
+
+
+void RC4(RC4_KEY *key, size_t len, const uint8_t *in, uint8_t *out) {
+  uint32_t x = key->x;
+  uint32_t y = key->y;
+  uint32_t *d = key->data;
+
+  for (size_t i = 0; i < len; i++) {
+    x = (x + 1) & 0xff;
+    uint32_t tx = d[x];
+    y = (tx + y) & 0xff;
+    uint32_t ty = d[y];
+    d[x] = ty;
+    d[y] = tx;
+    out[i] = d[(tx + ty) & 0xff] ^ in[i];
+  }
+
+  key->x = x;
+  key->y = y;
+}
+
+void RC4_set_key(RC4_KEY *rc4key, unsigned len, const uint8_t *key) {
+  uint32_t *d = &rc4key->data[0];
+  rc4key->x = 0;
+  rc4key->y = 0;
+
+  for (unsigned i = 0; i < 256; i++) {
+    d[i] = i;
+  }
+
+  unsigned id1 = 0, id2 = 0;
+  for (unsigned i = 0; i < 256; i++) {
+    uint32_t tmp = d[i];
+    id2 = (key[id1] + tmp + id2) & 0xff;
+    if (++id1 == len) {
+      id1 = 0;
+    }
+    d[i] = d[id2];
+    d[id2] = tmp;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c.grpc_back
new file mode 100644
index 0000000..a27a657
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rc4/rc4.c.grpc_back	
@@ -0,0 +1,98 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/rc4.h>
+
+
+void RC4(RC4_KEY *key, size_t len, const uint8_t *in, uint8_t *out) {
+  uint32_t x = key->x;
+  uint32_t y = key->y;
+  uint32_t *d = key->data;
+
+  for (size_t i = 0; i < len; i++) {
+    x = (x + 1) & 0xff;
+    uint32_t tx = d[x];
+    y = (tx + y) & 0xff;
+    uint32_t ty = d[y];
+    d[x] = ty;
+    d[y] = tx;
+    out[i] = d[(tx + ty) & 0xff] ^ in[i];
+  }
+
+  key->x = x;
+  key->y = y;
+}
+
+void RC4_set_key(RC4_KEY *rc4key, unsigned len, const uint8_t *key) {
+  uint32_t *d = &rc4key->data[0];
+  rc4key->x = 0;
+  rc4key->y = 0;
+
+  for (unsigned i = 0; i < 256; i++) {
+    d[i] = i;
+  }
+
+  unsigned id1 = 0, id2 = 0;
+  for (unsigned i = 0; i < 256; i++) {
+    uint32_t tmp = d[i];
+    id2 = (key[id1] + tmp + id2) & 0xff;
+    if (++id1 == len) {
+      id1 = 0;
+    }
+    d[i] = d[id2];
+    d[id2] = tmp;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c
new file mode 100644
index 0000000..ffb1a7e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c	
@@ -0,0 +1,67 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+
+#if defined(OPENSSL_C11_ATOMIC)
+
+#include <assert.h>
+#include <stdalign.h>
+#include <stdatomic.h>
+#include <stdlib.h>
+
+#include <openssl_grpc/type_check.h>
+
+
+// See comment above the typedef of CRYPTO_refcount_t about these tests.
+static_assert(alignof(CRYPTO_refcount_t) == alignof(_Atomic CRYPTO_refcount_t),
+              "_Atomic alters the needed alignment of a reference count");
+static_assert(sizeof(CRYPTO_refcount_t) == sizeof(_Atomic CRYPTO_refcount_t),
+              "_Atomic alters the size of a reference count");
+
+static_assert((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX,
+              "CRYPTO_REFCOUNT_MAX is incorrect");
+
+void CRYPTO_refcount_inc(CRYPTO_refcount_t *in_count) {
+  _Atomic CRYPTO_refcount_t *count = (_Atomic CRYPTO_refcount_t *) in_count;
+  uint32_t expected = atomic_load(count);
+
+  while (expected != CRYPTO_REFCOUNT_MAX) {
+    uint32_t new_value = expected + 1;
+    if (atomic_compare_exchange_weak(count, &expected, new_value)) {
+      break;
+    }
+  }
+}
+
+int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *in_count) {
+  _Atomic CRYPTO_refcount_t *count = (_Atomic CRYPTO_refcount_t *)in_count;
+  uint32_t expected = atomic_load(count);
+
+  for (;;) {
+    if (expected == 0) {
+      abort();
+    } else if (expected == CRYPTO_REFCOUNT_MAX) {
+      return 0;
+    } else {
+      const uint32_t new_value = expected - 1;
+      if (atomic_compare_exchange_weak(count, &expected, new_value)) {
+        return new_value == 0;
+      }
+    }
+  }
+}
+
+#endif  // OPENSSL_C11_ATOMIC
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c.grpc_back
new file mode 100644
index 0000000..0a331a4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_c11.c.grpc_back	
@@ -0,0 +1,67 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+
+#if defined(OPENSSL_C11_ATOMIC)
+
+#include <assert.h>
+#include <stdalign.h>
+#include <stdatomic.h>
+#include <stdlib.h>
+
+#include <openssl/type_check.h>
+
+
+// See comment above the typedef of CRYPTO_refcount_t about these tests.
+static_assert(alignof(CRYPTO_refcount_t) == alignof(_Atomic CRYPTO_refcount_t),
+              "_Atomic alters the needed alignment of a reference count");
+static_assert(sizeof(CRYPTO_refcount_t) == sizeof(_Atomic CRYPTO_refcount_t),
+              "_Atomic alters the size of a reference count");
+
+static_assert((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX,
+              "CRYPTO_REFCOUNT_MAX is incorrect");
+
+void CRYPTO_refcount_inc(CRYPTO_refcount_t *in_count) {
+  _Atomic CRYPTO_refcount_t *count = (_Atomic CRYPTO_refcount_t *) in_count;
+  uint32_t expected = atomic_load(count);
+
+  while (expected != CRYPTO_REFCOUNT_MAX) {
+    uint32_t new_value = expected + 1;
+    if (atomic_compare_exchange_weak(count, &expected, new_value)) {
+      break;
+    }
+  }
+}
+
+int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *in_count) {
+  _Atomic CRYPTO_refcount_t *count = (_Atomic CRYPTO_refcount_t *)in_count;
+  uint32_t expected = atomic_load(count);
+
+  for (;;) {
+    if (expected == 0) {
+      abort();
+    } else if (expected == CRYPTO_REFCOUNT_MAX) {
+      return 0;
+    } else {
+      const uint32_t new_value = expected - 1;
+      if (atomic_compare_exchange_weak(count, &expected, new_value)) {
+        return new_value == 0;
+      }
+    }
+  }
+}
+
+#endif  // OPENSSL_C11_ATOMIC
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c
new file mode 100644
index 0000000..0d01352
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#include <stdlib.h>
+
+#include <openssl_grpc/type_check.h>
+
+
+#if !defined(OPENSSL_C11_ATOMIC)
+
+OPENSSL_STATIC_ASSERT((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX,
+                      "CRYPTO_REFCOUNT_MAX is incorrect");
+
+static struct CRYPTO_STATIC_MUTEX g_refcount_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+void CRYPTO_refcount_inc(CRYPTO_refcount_t *count) {
+  CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
+  if (*count < CRYPTO_REFCOUNT_MAX) {
+    (*count)++;
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
+}
+
+int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
+  if (*count == 0) {
+    abort();
+  }
+  if (*count < CRYPTO_REFCOUNT_MAX) {
+    (*count)--;
+  }
+  ret = (*count == 0);
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
+
+  return ret;
+}
+
+#endif  // OPENSSL_C11_ATOMIC
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c.grpc_back
new file mode 100644
index 0000000..fb1c11f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/refcount_lock.c.grpc_back	
@@ -0,0 +1,53 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#include <stdlib.h>
+
+#include <openssl/type_check.h>
+
+
+#if !defined(OPENSSL_C11_ATOMIC)
+
+OPENSSL_STATIC_ASSERT((CRYPTO_refcount_t)-1 == CRYPTO_REFCOUNT_MAX,
+                      "CRYPTO_REFCOUNT_MAX is incorrect");
+
+static struct CRYPTO_STATIC_MUTEX g_refcount_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+void CRYPTO_refcount_inc(CRYPTO_refcount_t *count) {
+  CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
+  if (*count < CRYPTO_REFCOUNT_MAX) {
+    (*count)++;
+  }
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
+}
+
+int CRYPTO_refcount_dec_and_test_zero(CRYPTO_refcount_t *count) {
+  int ret;
+
+  CRYPTO_STATIC_MUTEX_lock_write(&g_refcount_lock);
+  if (*count == 0) {
+    abort();
+  }
+  if (*count < CRYPTO_REFCOUNT_MAX) {
+    (*count)--;
+  }
+  ret = (*count == 0);
+  CRYPTO_STATIC_MUTEX_unlock_write(&g_refcount_lock);
+
+  return ret;
+}
+
+#endif  // OPENSSL_C11_ATOMIC
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c
new file mode 100644
index 0000000..6d4f9b8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c	
@@ -0,0 +1,325 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../fipsmodule/rsa/internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // An RSA object may be missing some components.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+RSA *RSA_parse_public_key(CBS *cbs) {
+  RSA *ret = RSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->n) ||
+      !parse_integer(&child, &ret->e) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+
+  if (!BN_is_odd(ret->e) ||
+      BN_num_bits(ret->e) < 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    RSA_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  RSA *ret = RSA_parse_public_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int RSA_marshal_public_key(CBB *cbb, const RSA *rsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, rsa->n) ||
+      !marshal_integer(&child, rsa->e) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int RSA_public_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                            const RSA *rsa) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_public_key(&cbb, rsa) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+// kVersionTwoPrime is the value of the version field for a two-prime
+// RSAPrivateKey structure (RFC 3447).
+static const uint64_t kVersionTwoPrime = 0;
+
+RSA *RSA_parse_private_key(CBS *cbs) {
+  RSA *ret = RSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&child, &version)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    goto err;
+  }
+
+  if (version != kVersionTwoPrime) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_VERSION);
+    goto err;
+  }
+
+  if (!parse_integer(&child, &ret->n) ||
+      !parse_integer(&child, &ret->e) ||
+      !parse_integer(&child, &ret->d) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->dmp1) ||
+      !parse_integer(&child, &ret->dmq1) ||
+      !parse_integer(&child, &ret->iqmp)) {
+    goto err;
+  }
+
+  if (CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    goto err;
+  }
+
+  if (!RSA_check_key(ret)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    goto err;
+  }
+
+  return ret;
+
+err:
+  RSA_free(ret);
+  return NULL;
+}
+
+RSA *RSA_private_key_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  RSA *ret = RSA_parse_private_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int RSA_marshal_private_key(CBB *cbb, const RSA *rsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&child, kVersionTwoPrime) ||
+      !marshal_integer(&child, rsa->n) ||
+      !marshal_integer(&child, rsa->e) ||
+      !marshal_integer(&child, rsa->d) ||
+      !marshal_integer(&child, rsa->p) ||
+      !marshal_integer(&child, rsa->q) ||
+      !marshal_integer(&child, rsa->dmp1) ||
+      !marshal_integer(&child, rsa->dmq1) ||
+      !marshal_integer(&child, rsa->iqmp) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int RSA_private_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                             const RSA *rsa) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_private_key(&cbb, rsa) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  RSA *ret = RSA_parse_public_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    RSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_RSAPublicKey(const RSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_public_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  RSA *ret = RSA_parse_private_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    RSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_private_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+RSA *RSAPublicKey_dup(const RSA *rsa) {
+  uint8_t *der;
+  size_t der_len;
+  if (!RSA_public_key_to_bytes(&der, &der_len, rsa)) {
+    return NULL;
+  }
+  RSA *ret = RSA_public_key_from_bytes(der, der_len);
+  OPENSSL_free(der);
+  return ret;
+}
+
+RSA *RSAPrivateKey_dup(const RSA *rsa) {
+  uint8_t *der;
+  size_t der_len;
+  if (!RSA_private_key_to_bytes(&der, &der_len, rsa)) {
+    return NULL;
+  }
+  RSA *ret = RSA_private_key_from_bytes(der, der_len);
+  OPENSSL_free(der);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c.grpc_back
new file mode 100644
index 0000000..3cc6a9c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_asn1.c.grpc_back	
@@ -0,0 +1,325 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/rsa.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../fipsmodule/rsa/internal.h"
+#include "../bytestring/internal.h"
+#include "../internal.h"
+
+
+static int parse_integer(CBS *cbs, BIGNUM **out) {
+  assert(*out == NULL);
+  *out = BN_new();
+  if (*out == NULL) {
+    return 0;
+  }
+  return BN_parse_asn1_unsigned(cbs, *out);
+}
+
+static int marshal_integer(CBB *cbb, BIGNUM *bn) {
+  if (bn == NULL) {
+    // An RSA object may be missing some components.
+    OPENSSL_PUT_ERROR(RSA, RSA_R_VALUE_MISSING);
+    return 0;
+  }
+  return BN_marshal_asn1(cbb, bn);
+}
+
+RSA *RSA_parse_public_key(CBS *cbs) {
+  RSA *ret = RSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+  CBS child;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !parse_integer(&child, &ret->n) ||
+      !parse_integer(&child, &ret->e) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+
+  if (!BN_is_odd(ret->e) ||
+      BN_num_bits(ret->e) < 2) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    RSA_free(ret);
+    return NULL;
+  }
+
+  return ret;
+}
+
+RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  RSA *ret = RSA_parse_public_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int RSA_marshal_public_key(CBB *cbb, const RSA *rsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !marshal_integer(&child, rsa->n) ||
+      !marshal_integer(&child, rsa->e) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int RSA_public_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                            const RSA *rsa) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_public_key(&cbb, rsa) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+// kVersionTwoPrime is the value of the version field for a two-prime
+// RSAPrivateKey structure (RFC 3447).
+static const uint64_t kVersionTwoPrime = 0;
+
+RSA *RSA_parse_private_key(CBS *cbs) {
+  RSA *ret = RSA_new();
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  CBS child;
+  uint64_t version;
+  if (!CBS_get_asn1(cbs, &child, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&child, &version)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    goto err;
+  }
+
+  if (version != kVersionTwoPrime) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_VERSION);
+    goto err;
+  }
+
+  if (!parse_integer(&child, &ret->n) ||
+      !parse_integer(&child, &ret->e) ||
+      !parse_integer(&child, &ret->d) ||
+      !parse_integer(&child, &ret->p) ||
+      !parse_integer(&child, &ret->q) ||
+      !parse_integer(&child, &ret->dmp1) ||
+      !parse_integer(&child, &ret->dmq1) ||
+      !parse_integer(&child, &ret->iqmp)) {
+    goto err;
+  }
+
+  if (CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    goto err;
+  }
+
+  if (!RSA_check_key(ret)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_RSA_PARAMETERS);
+    goto err;
+  }
+
+  return ret;
+
+err:
+  RSA_free(ret);
+  return NULL;
+}
+
+RSA *RSA_private_key_from_bytes(const uint8_t *in, size_t in_len) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  RSA *ret = RSA_parse_private_key(&cbs);
+  if (ret == NULL || CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING);
+    RSA_free(ret);
+    return NULL;
+  }
+  return ret;
+}
+
+int RSA_marshal_private_key(CBB *cbb, const RSA *rsa) {
+  CBB child;
+  if (!CBB_add_asn1(cbb, &child, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&child, kVersionTwoPrime) ||
+      !marshal_integer(&child, rsa->n) ||
+      !marshal_integer(&child, rsa->e) ||
+      !marshal_integer(&child, rsa->d) ||
+      !marshal_integer(&child, rsa->p) ||
+      !marshal_integer(&child, rsa->q) ||
+      !marshal_integer(&child, rsa->dmp1) ||
+      !marshal_integer(&child, rsa->dmq1) ||
+      !marshal_integer(&child, rsa->iqmp) ||
+      !CBB_flush(cbb)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    return 0;
+  }
+  return 1;
+}
+
+int RSA_private_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                             const RSA *rsa) {
+  CBB cbb;
+  CBB_zero(&cbb);
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_private_key(&cbb, rsa) ||
+      !CBB_finish(&cbb, out_bytes, out_len)) {
+    OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
+    CBB_cleanup(&cbb);
+    return 0;
+  }
+  return 1;
+}
+
+RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  RSA *ret = RSA_parse_public_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    RSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_RSAPublicKey(const RSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_public_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len) {
+  if (len < 0) {
+    return NULL;
+  }
+  CBS cbs;
+  CBS_init(&cbs, *inp, (size_t)len);
+  RSA *ret = RSA_parse_private_key(&cbs);
+  if (ret == NULL) {
+    return NULL;
+  }
+  if (out != NULL) {
+    RSA_free(*out);
+    *out = ret;
+  }
+  *inp = CBS_data(&cbs);
+  return ret;
+}
+
+int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp) {
+  CBB cbb;
+  if (!CBB_init(&cbb, 0) ||
+      !RSA_marshal_private_key(&cbb, in)) {
+    CBB_cleanup(&cbb);
+    return -1;
+  }
+  return CBB_finish_i2d(&cbb, outp);
+}
+
+RSA *RSAPublicKey_dup(const RSA *rsa) {
+  uint8_t *der;
+  size_t der_len;
+  if (!RSA_public_key_to_bytes(&der, &der_len, rsa)) {
+    return NULL;
+  }
+  RSA *ret = RSA_public_key_from_bytes(der, der_len);
+  OPENSSL_free(der);
+  return ret;
+}
+
+RSA *RSAPrivateKey_dup(const RSA *rsa) {
+  uint8_t *der;
+  size_t der_len;
+  if (!RSA_private_key_to_bytes(&der, &der_len, rsa)) {
+    return NULL;
+  }
+  RSA *ret = RSA_private_key_from_bytes(der, der_len);
+  OPENSSL_free(der);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c
new file mode 100644
index 0000000..40f6b4f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c	
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl_grpc/rsa.h>
+
+#include <openssl_grpc/evp.h>
+
+
+int RSA_print(BIO *bio, const RSA *rsa, int indent) {
+  EVP_PKEY *pkey = EVP_PKEY_new();
+  int ret = pkey != NULL &&
+            EVP_PKEY_set1_RSA(pkey, (RSA *)rsa) &&
+            EVP_PKEY_print_private(bio, pkey, indent, NULL);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c.grpc_back
new file mode 100644
index 0000000..71970b8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/rsa_extra/rsa_print.c.grpc_back	
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/rsa.h>
+
+#include <openssl/evp.h>
+
+
+int RSA_print(BIO *bio, const RSA *rsa, int indent) {
+  EVP_PKEY *pkey = EVP_PKEY_new();
+  int ret = pkey != NULL &&
+            EVP_PKEY_set1_RSA(pkey, (RSA *)rsa) &&
+            EVP_PKEY_print_private(bio, pkey, indent, NULL);
+  EVP_PKEY_free(pkey);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c
new file mode 100644
index 0000000..26e73bf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c	
@@ -0,0 +1,82 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdint.h>
+#include <string.h>
+
+#include <openssl_grpc/siphash.h>
+
+#include "../internal.h"
+
+
+static void siphash_round(uint64_t v[4]) {
+  v[0] += v[1];
+  v[2] += v[3];
+  v[1] = (v[1] << 13) | (v[1] >> (64 - 13));
+  v[3] = (v[3] << 16) | (v[3] >> (64 - 16));
+  v[1] ^= v[0];
+  v[3] ^= v[2];
+  v[0] = (v[0] << 32) | (v[0] >> 32);
+  v[2] += v[1];
+  v[0] += v[3];
+  v[1] = (v[1] << 17) | (v[1] >> (64 - 17));
+  v[3] = (v[3] << 21) | (v[3] >> (64 - 21));
+  v[1] ^= v[2];
+  v[3] ^= v[0];
+  v[2] = (v[2] << 32) | (v[2] >> 32);
+}
+
+uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                    size_t input_len) {
+  const size_t orig_input_len = input_len;
+
+  uint64_t v[4];
+  v[0] = key[0] ^ UINT64_C(0x736f6d6570736575);
+  v[1] = key[1] ^ UINT64_C(0x646f72616e646f6d);
+  v[2] = key[0] ^ UINT64_C(0x6c7967656e657261);
+  v[3] = key[1] ^ UINT64_C(0x7465646279746573);
+
+  while (input_len >= sizeof(uint64_t)) {
+    uint64_t m;
+    memcpy(&m, input, sizeof(m));
+    v[3] ^= m;
+    siphash_round(v);
+    siphash_round(v);
+    v[0] ^= m;
+
+    input += sizeof(uint64_t);
+    input_len -= sizeof(uint64_t);
+  }
+
+  union {
+    uint8_t bytes[8];
+    uint64_t word;
+  } last_block;
+  last_block.word = 0;
+  OPENSSL_memcpy(last_block.bytes, input, input_len);
+  last_block.bytes[7] = orig_input_len & 0xff;
+
+  v[3] ^= last_block.word;
+  siphash_round(v);
+  siphash_round(v);
+  v[0] ^= last_block.word;
+
+  v[2] ^= 0xff;
+  siphash_round(v);
+  siphash_round(v);
+  siphash_round(v);
+  siphash_round(v);
+
+  return v[0] ^ v[1] ^ v[2] ^ v[3];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c.grpc_back
new file mode 100644
index 0000000..f55c3ca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/siphash/siphash.c.grpc_back	
@@ -0,0 +1,82 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <stdint.h>
+#include <string.h>
+
+#include <openssl/siphash.h>
+
+#include "../internal.h"
+
+
+static void siphash_round(uint64_t v[4]) {
+  v[0] += v[1];
+  v[2] += v[3];
+  v[1] = (v[1] << 13) | (v[1] >> (64 - 13));
+  v[3] = (v[3] << 16) | (v[3] >> (64 - 16));
+  v[1] ^= v[0];
+  v[3] ^= v[2];
+  v[0] = (v[0] << 32) | (v[0] >> 32);
+  v[2] += v[1];
+  v[0] += v[3];
+  v[1] = (v[1] << 17) | (v[1] >> (64 - 17));
+  v[3] = (v[3] << 21) | (v[3] >> (64 - 21));
+  v[1] ^= v[2];
+  v[3] ^= v[0];
+  v[2] = (v[2] << 32) | (v[2] >> 32);
+}
+
+uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                    size_t input_len) {
+  const size_t orig_input_len = input_len;
+
+  uint64_t v[4];
+  v[0] = key[0] ^ UINT64_C(0x736f6d6570736575);
+  v[1] = key[1] ^ UINT64_C(0x646f72616e646f6d);
+  v[2] = key[0] ^ UINT64_C(0x6c7967656e657261);
+  v[3] = key[1] ^ UINT64_C(0x7465646279746573);
+
+  while (input_len >= sizeof(uint64_t)) {
+    uint64_t m;
+    memcpy(&m, input, sizeof(m));
+    v[3] ^= m;
+    siphash_round(v);
+    siphash_round(v);
+    v[0] ^= m;
+
+    input += sizeof(uint64_t);
+    input_len -= sizeof(uint64_t);
+  }
+
+  union {
+    uint8_t bytes[8];
+    uint64_t word;
+  } last_block;
+  last_block.word = 0;
+  OPENSSL_memcpy(last_block.bytes, input, input_len);
+  last_block.bytes[7] = orig_input_len & 0xff;
+
+  v[3] ^= last_block.word;
+  siphash_round(v);
+  siphash_round(v);
+  v[0] ^= last_block.word;
+
+  v[2] ^= 0xff;
+  siphash_round(v);
+  siphash_round(v);
+  siphash_round(v);
+  siphash_round(v);
+
+  return v[0] ^ v[1] ^ v[2] ^ v[3];
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c
new file mode 100644
index 0000000..79399de
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c	
@@ -0,0 +1,431 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/stack.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+
+#include "../internal.h"
+
+
+// kMinSize is the number of pointers that will be initially allocated in a new
+// stack.
+static const size_t kMinSize = 4;
+
+_STACK *sk_new(stack_cmp_func comp) {
+  _STACK *ret;
+
+  ret = OPENSSL_malloc(sizeof(_STACK));
+  if (ret == NULL) {
+    goto err;
+  }
+  OPENSSL_memset(ret, 0, sizeof(_STACK));
+
+  ret->data = OPENSSL_malloc(sizeof(void *) * kMinSize);
+  if (ret->data == NULL) {
+    goto err;
+  }
+
+  OPENSSL_memset(ret->data, 0, sizeof(void *) * kMinSize);
+
+  ret->comp = comp;
+  ret->num_alloc = kMinSize;
+
+  return ret;
+
+err:
+  OPENSSL_free(ret);
+  return NULL;
+}
+
+_STACK *sk_new_null(void) { return sk_new(NULL); }
+
+size_t sk_num(const _STACK *sk) {
+  if (sk == NULL) {
+    return 0;
+  }
+  return sk->num;
+}
+
+void sk_zero(_STACK *sk) {
+  if (sk == NULL || sk->num == 0) {
+    return;
+  }
+  OPENSSL_memset(sk->data, 0, sizeof(void*) * sk->num);
+  sk->num = 0;
+  sk->sorted = 0;
+}
+
+void *sk_value(const _STACK *sk, size_t i) {
+  if (!sk || i >= sk->num) {
+    return NULL;
+  }
+  return sk->data[i];
+}
+
+void *sk_set(_STACK *sk, size_t i, void *value) {
+  if (!sk || i >= sk->num) {
+    return NULL;
+  }
+  return sk->data[i] = value;
+}
+
+void sk_free(_STACK *sk) {
+  if (sk == NULL) {
+    return;
+  }
+  OPENSSL_free(sk->data);
+  OPENSSL_free(sk);
+}
+
+void sk_pop_free_ex(_STACK *sk, void (*call_free_func)(stack_free_func, void *),
+                    stack_free_func free_func) {
+  if (sk == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < sk->num; i++) {
+    if (sk->data[i] != NULL) {
+      call_free_func(free_func, sk->data[i]);
+    }
+  }
+  sk_free(sk);
+}
+
+// Historically, |sk_pop_free| called the function as |stack_free_func|
+// directly. This is undefined in C. Some callers called |sk_pop_free| directly,
+// so we must maintain a compatibility version for now.
+static void call_free_func_legacy(stack_free_func func, void *ptr) {
+  func(ptr);
+}
+
+void sk_pop_free(_STACK *sk, stack_free_func free_func) {
+  sk_pop_free_ex(sk, call_free_func_legacy, free_func);
+}
+
+size_t sk_insert(_STACK *sk, void *p, size_t where) {
+  if (sk == NULL) {
+    return 0;
+  }
+
+  if (sk->num_alloc <= sk->num + 1) {
+    // Attempt to double the size of the array.
+    size_t new_alloc = sk->num_alloc << 1;
+    size_t alloc_size = new_alloc * sizeof(void *);
+    void **data;
+
+    // If the doubling overflowed, try to increment.
+    if (new_alloc < sk->num_alloc || alloc_size / sizeof(void *) != new_alloc) {
+      new_alloc = sk->num_alloc + 1;
+      alloc_size = new_alloc * sizeof(void *);
+    }
+
+    // If the increment also overflowed, fail.
+    if (new_alloc < sk->num_alloc || alloc_size / sizeof(void *) != new_alloc) {
+      return 0;
+    }
+
+    data = OPENSSL_realloc(sk->data, alloc_size);
+    if (data == NULL) {
+      return 0;
+    }
+
+    sk->data = data;
+    sk->num_alloc = new_alloc;
+  }
+
+  if (where >= sk->num) {
+    sk->data[sk->num] = p;
+  } else {
+    OPENSSL_memmove(&sk->data[where + 1], &sk->data[where],
+                    sizeof(void *) * (sk->num - where));
+    sk->data[where] = p;
+  }
+
+  sk->num++;
+  sk->sorted = 0;
+
+  return sk->num;
+}
+
+void *sk_delete(_STACK *sk, size_t where) {
+  void *ret;
+
+  if (!sk || where >= sk->num) {
+    return NULL;
+  }
+
+  ret = sk->data[where];
+
+  if (where != sk->num - 1) {
+    OPENSSL_memmove(&sk->data[where], &sk->data[where + 1],
+            sizeof(void *) * (sk->num - where - 1));
+  }
+
+  sk->num--;
+  return ret;
+}
+
+void *sk_delete_ptr(_STACK *sk, const void *p) {
+  if (sk == NULL) {
+    return NULL;
+  }
+
+  for (size_t i = 0; i < sk->num; i++) {
+    if (sk->data[i] == p) {
+      return sk_delete(sk, i);
+    }
+  }
+
+  return NULL;
+}
+
+int sk_find(const _STACK *sk, size_t *out_index, const void *p,
+            int (*call_cmp_func)(stack_cmp_func, const void **,
+                                 const void **)) {
+  if (sk == NULL) {
+    return 0;
+  }
+
+  if (sk->comp == NULL) {
+    // Use pointer equality when no comparison function has been set.
+    for (size_t i = 0; i < sk->num; i++) {
+      if (sk->data[i] == p) {
+        if (out_index) {
+          *out_index = i;
+        }
+        return 1;
+      }
+    }
+    return 0;
+  }
+
+  if (p == NULL) {
+    return 0;
+  }
+
+  if (!sk_is_sorted(sk)) {
+    for (size_t i = 0; i < sk->num; i++) {
+      const void *elem = sk->data[i];
+      if (call_cmp_func(sk->comp, &p, &elem) == 0) {
+        if (out_index) {
+          *out_index = i;
+        }
+        return 1;
+      }
+    }
+    return 0;
+  }
+
+  // The stack is sorted, so binary search to find the element.
+  //
+  // |lo| and |hi| maintain a half-open interval of where the answer may be. All
+  // indices such that |lo <= idx < hi| are candidates.
+  size_t lo = 0, hi = sk->num;
+  while (lo < hi) {
+    // Bias |mid| towards |lo|. See the |r == 0| case below.
+    size_t mid = lo + (hi - lo - 1) / 2;
+    assert(lo <= mid && mid < hi);
+    const void *elem = sk->data[mid];
+    int r = call_cmp_func(sk->comp, &p, &elem);
+    if (r > 0) {
+      lo = mid + 1;  // |mid| is too low.
+    } else if (r < 0) {
+      hi = mid;  // |mid| is too high.
+    } else {
+      // |mid| matches. However, this function returns the earliest match, so we
+      // can only return if the range has size one.
+      if (hi - lo == 1) {
+        if (out_index != NULL) {
+          *out_index = mid;
+        }
+        return 1;
+      }
+      // The sample is biased towards |lo|. |mid| can only be |hi - 1| if
+      // |hi - lo| was one, so this makes forward progress.
+      assert(mid + 1 < hi);
+      hi = mid + 1;
+    }
+  }
+
+  assert(lo == hi);
+  return 0;  // Not found.
+}
+
+void *sk_shift(_STACK *sk) {
+  if (sk == NULL) {
+    return NULL;
+  }
+  if (sk->num == 0) {
+    return NULL;
+  }
+  return sk_delete(sk, 0);
+}
+
+size_t sk_push(_STACK *sk, void *p) { return (sk_insert(sk, p, sk->num)); }
+
+void *sk_pop(_STACK *sk) {
+  if (sk == NULL) {
+    return NULL;
+  }
+  if (sk->num == 0) {
+    return NULL;
+  }
+  return sk_delete(sk, sk->num - 1);
+}
+
+_STACK *sk_dup(const _STACK *sk) {
+  _STACK *ret;
+  void **s;
+
+  if (sk == NULL) {
+    return NULL;
+  }
+
+  ret = sk_new(sk->comp);
+  if (ret == NULL) {
+    goto err;
+  }
+
+  s = (void **)OPENSSL_realloc(ret->data, sizeof(void *) * sk->num_alloc);
+  if (s == NULL) {
+    goto err;
+  }
+  ret->data = s;
+
+  ret->num = sk->num;
+  OPENSSL_memcpy(ret->data, sk->data, sizeof(void *) * sk->num);
+  ret->sorted = sk->sorted;
+  ret->num_alloc = sk->num_alloc;
+  ret->comp = sk->comp;
+  return ret;
+
+err:
+  sk_free(ret);
+  return NULL;
+}
+
+void sk_sort(_STACK *sk) {
+  if (sk == NULL || sk->comp == NULL || sk->sorted) {
+    return;
+  }
+
+  // sk->comp is a function that takes pointers to pointers to elements, but
+  // qsort take a comparison function that just takes pointers to elements.
+  // However, since we're passing an array of pointers to qsort, we can just
+  // cast the comparison function and everything works.
+  //
+  // TODO(davidben): This is undefined behavior, but the call is in libc so,
+  // e.g., CFI does not notice. Unfortunately, |qsort| is missing a void*
+  // parameter in its callback and |qsort_s| / |qsort_r| are a mess of
+  // incompatibility.
+  if (sk->num >= 2) {
+    int (*comp_func)(const void *, const void *) =
+        (int (*)(const void *, const void *))(sk->comp);
+    qsort(sk->data, sk->num, sizeof(void *), comp_func);
+  }
+  sk->sorted = 1;
+}
+
+int sk_is_sorted(const _STACK *sk) {
+  if (!sk) {
+    return 1;
+  }
+  return sk->sorted;
+}
+
+stack_cmp_func sk_set_cmp_func(_STACK *sk, stack_cmp_func comp) {
+  stack_cmp_func old = sk->comp;
+
+  if (sk->comp != comp) {
+    sk->sorted = 0;
+  }
+  sk->comp = comp;
+
+  return old;
+}
+
+_STACK *sk_deep_copy(const _STACK *sk,
+                     void *(*call_copy_func)(stack_copy_func, void *),
+                     stack_copy_func copy_func,
+                     void (*call_free_func)(stack_free_func, void *),
+                     stack_free_func free_func) {
+  _STACK *ret = sk_dup(sk);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  for (size_t i = 0; i < ret->num; i++) {
+    if (ret->data[i] == NULL) {
+      continue;
+    }
+    ret->data[i] = call_copy_func(copy_func, ret->data[i]);
+    if (ret->data[i] == NULL) {
+      for (size_t j = 0; j < i; j++) {
+        if (ret->data[j] != NULL) {
+          call_free_func(free_func, ret->data[j]);
+        }
+      }
+      sk_free(ret);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c.grpc_back
new file mode 100644
index 0000000..599bd7b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/stack/stack.c.grpc_back	
@@ -0,0 +1,431 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/stack.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+// kMinSize is the number of pointers that will be initially allocated in a new
+// stack.
+static const size_t kMinSize = 4;
+
+_STACK *sk_new(stack_cmp_func comp) {
+  _STACK *ret;
+
+  ret = OPENSSL_malloc(sizeof(_STACK));
+  if (ret == NULL) {
+    goto err;
+  }
+  OPENSSL_memset(ret, 0, sizeof(_STACK));
+
+  ret->data = OPENSSL_malloc(sizeof(void *) * kMinSize);
+  if (ret->data == NULL) {
+    goto err;
+  }
+
+  OPENSSL_memset(ret->data, 0, sizeof(void *) * kMinSize);
+
+  ret->comp = comp;
+  ret->num_alloc = kMinSize;
+
+  return ret;
+
+err:
+  OPENSSL_free(ret);
+  return NULL;
+}
+
+_STACK *sk_new_null(void) { return sk_new(NULL); }
+
+size_t sk_num(const _STACK *sk) {
+  if (sk == NULL) {
+    return 0;
+  }
+  return sk->num;
+}
+
+void sk_zero(_STACK *sk) {
+  if (sk == NULL || sk->num == 0) {
+    return;
+  }
+  OPENSSL_memset(sk->data, 0, sizeof(void*) * sk->num);
+  sk->num = 0;
+  sk->sorted = 0;
+}
+
+void *sk_value(const _STACK *sk, size_t i) {
+  if (!sk || i >= sk->num) {
+    return NULL;
+  }
+  return sk->data[i];
+}
+
+void *sk_set(_STACK *sk, size_t i, void *value) {
+  if (!sk || i >= sk->num) {
+    return NULL;
+  }
+  return sk->data[i] = value;
+}
+
+void sk_free(_STACK *sk) {
+  if (sk == NULL) {
+    return;
+  }
+  OPENSSL_free(sk->data);
+  OPENSSL_free(sk);
+}
+
+void sk_pop_free_ex(_STACK *sk, void (*call_free_func)(stack_free_func, void *),
+                    stack_free_func free_func) {
+  if (sk == NULL) {
+    return;
+  }
+
+  for (size_t i = 0; i < sk->num; i++) {
+    if (sk->data[i] != NULL) {
+      call_free_func(free_func, sk->data[i]);
+    }
+  }
+  sk_free(sk);
+}
+
+// Historically, |sk_pop_free| called the function as |stack_free_func|
+// directly. This is undefined in C. Some callers called |sk_pop_free| directly,
+// so we must maintain a compatibility version for now.
+static void call_free_func_legacy(stack_free_func func, void *ptr) {
+  func(ptr);
+}
+
+void sk_pop_free(_STACK *sk, stack_free_func free_func) {
+  sk_pop_free_ex(sk, call_free_func_legacy, free_func);
+}
+
+size_t sk_insert(_STACK *sk, void *p, size_t where) {
+  if (sk == NULL) {
+    return 0;
+  }
+
+  if (sk->num_alloc <= sk->num + 1) {
+    // Attempt to double the size of the array.
+    size_t new_alloc = sk->num_alloc << 1;
+    size_t alloc_size = new_alloc * sizeof(void *);
+    void **data;
+
+    // If the doubling overflowed, try to increment.
+    if (new_alloc < sk->num_alloc || alloc_size / sizeof(void *) != new_alloc) {
+      new_alloc = sk->num_alloc + 1;
+      alloc_size = new_alloc * sizeof(void *);
+    }
+
+    // If the increment also overflowed, fail.
+    if (new_alloc < sk->num_alloc || alloc_size / sizeof(void *) != new_alloc) {
+      return 0;
+    }
+
+    data = OPENSSL_realloc(sk->data, alloc_size);
+    if (data == NULL) {
+      return 0;
+    }
+
+    sk->data = data;
+    sk->num_alloc = new_alloc;
+  }
+
+  if (where >= sk->num) {
+    sk->data[sk->num] = p;
+  } else {
+    OPENSSL_memmove(&sk->data[where + 1], &sk->data[where],
+                    sizeof(void *) * (sk->num - where));
+    sk->data[where] = p;
+  }
+
+  sk->num++;
+  sk->sorted = 0;
+
+  return sk->num;
+}
+
+void *sk_delete(_STACK *sk, size_t where) {
+  void *ret;
+
+  if (!sk || where >= sk->num) {
+    return NULL;
+  }
+
+  ret = sk->data[where];
+
+  if (where != sk->num - 1) {
+    OPENSSL_memmove(&sk->data[where], &sk->data[where + 1],
+            sizeof(void *) * (sk->num - where - 1));
+  }
+
+  sk->num--;
+  return ret;
+}
+
+void *sk_delete_ptr(_STACK *sk, const void *p) {
+  if (sk == NULL) {
+    return NULL;
+  }
+
+  for (size_t i = 0; i < sk->num; i++) {
+    if (sk->data[i] == p) {
+      return sk_delete(sk, i);
+    }
+  }
+
+  return NULL;
+}
+
+int sk_find(const _STACK *sk, size_t *out_index, const void *p,
+            int (*call_cmp_func)(stack_cmp_func, const void **,
+                                 const void **)) {
+  if (sk == NULL) {
+    return 0;
+  }
+
+  if (sk->comp == NULL) {
+    // Use pointer equality when no comparison function has been set.
+    for (size_t i = 0; i < sk->num; i++) {
+      if (sk->data[i] == p) {
+        if (out_index) {
+          *out_index = i;
+        }
+        return 1;
+      }
+    }
+    return 0;
+  }
+
+  if (p == NULL) {
+    return 0;
+  }
+
+  if (!sk_is_sorted(sk)) {
+    for (size_t i = 0; i < sk->num; i++) {
+      const void *elem = sk->data[i];
+      if (call_cmp_func(sk->comp, &p, &elem) == 0) {
+        if (out_index) {
+          *out_index = i;
+        }
+        return 1;
+      }
+    }
+    return 0;
+  }
+
+  // The stack is sorted, so binary search to find the element.
+  //
+  // |lo| and |hi| maintain a half-open interval of where the answer may be. All
+  // indices such that |lo <= idx < hi| are candidates.
+  size_t lo = 0, hi = sk->num;
+  while (lo < hi) {
+    // Bias |mid| towards |lo|. See the |r == 0| case below.
+    size_t mid = lo + (hi - lo - 1) / 2;
+    assert(lo <= mid && mid < hi);
+    const void *elem = sk->data[mid];
+    int r = call_cmp_func(sk->comp, &p, &elem);
+    if (r > 0) {
+      lo = mid + 1;  // |mid| is too low.
+    } else if (r < 0) {
+      hi = mid;  // |mid| is too high.
+    } else {
+      // |mid| matches. However, this function returns the earliest match, so we
+      // can only return if the range has size one.
+      if (hi - lo == 1) {
+        if (out_index != NULL) {
+          *out_index = mid;
+        }
+        return 1;
+      }
+      // The sample is biased towards |lo|. |mid| can only be |hi - 1| if
+      // |hi - lo| was one, so this makes forward progress.
+      assert(mid + 1 < hi);
+      hi = mid + 1;
+    }
+  }
+
+  assert(lo == hi);
+  return 0;  // Not found.
+}
+
+void *sk_shift(_STACK *sk) {
+  if (sk == NULL) {
+    return NULL;
+  }
+  if (sk->num == 0) {
+    return NULL;
+  }
+  return sk_delete(sk, 0);
+}
+
+size_t sk_push(_STACK *sk, void *p) { return (sk_insert(sk, p, sk->num)); }
+
+void *sk_pop(_STACK *sk) {
+  if (sk == NULL) {
+    return NULL;
+  }
+  if (sk->num == 0) {
+    return NULL;
+  }
+  return sk_delete(sk, sk->num - 1);
+}
+
+_STACK *sk_dup(const _STACK *sk) {
+  _STACK *ret;
+  void **s;
+
+  if (sk == NULL) {
+    return NULL;
+  }
+
+  ret = sk_new(sk->comp);
+  if (ret == NULL) {
+    goto err;
+  }
+
+  s = (void **)OPENSSL_realloc(ret->data, sizeof(void *) * sk->num_alloc);
+  if (s == NULL) {
+    goto err;
+  }
+  ret->data = s;
+
+  ret->num = sk->num;
+  OPENSSL_memcpy(ret->data, sk->data, sizeof(void *) * sk->num);
+  ret->sorted = sk->sorted;
+  ret->num_alloc = sk->num_alloc;
+  ret->comp = sk->comp;
+  return ret;
+
+err:
+  sk_free(ret);
+  return NULL;
+}
+
+void sk_sort(_STACK *sk) {
+  if (sk == NULL || sk->comp == NULL || sk->sorted) {
+    return;
+  }
+
+  // sk->comp is a function that takes pointers to pointers to elements, but
+  // qsort take a comparison function that just takes pointers to elements.
+  // However, since we're passing an array of pointers to qsort, we can just
+  // cast the comparison function and everything works.
+  //
+  // TODO(davidben): This is undefined behavior, but the call is in libc so,
+  // e.g., CFI does not notice. Unfortunately, |qsort| is missing a void*
+  // parameter in its callback and |qsort_s| / |qsort_r| are a mess of
+  // incompatibility.
+  if (sk->num >= 2) {
+    int (*comp_func)(const void *, const void *) =
+        (int (*)(const void *, const void *))(sk->comp);
+    qsort(sk->data, sk->num, sizeof(void *), comp_func);
+  }
+  sk->sorted = 1;
+}
+
+int sk_is_sorted(const _STACK *sk) {
+  if (!sk) {
+    return 1;
+  }
+  return sk->sorted;
+}
+
+stack_cmp_func sk_set_cmp_func(_STACK *sk, stack_cmp_func comp) {
+  stack_cmp_func old = sk->comp;
+
+  if (sk->comp != comp) {
+    sk->sorted = 0;
+  }
+  sk->comp = comp;
+
+  return old;
+}
+
+_STACK *sk_deep_copy(const _STACK *sk,
+                     void *(*call_copy_func)(stack_copy_func, void *),
+                     stack_copy_func copy_func,
+                     void (*call_free_func)(stack_free_func, void *),
+                     stack_free_func free_func) {
+  _STACK *ret = sk_dup(sk);
+  if (ret == NULL) {
+    return NULL;
+  }
+
+  for (size_t i = 0; i < ret->num; i++) {
+    if (ret->data[i] == NULL) {
+      continue;
+    }
+    ret->data[i] = call_copy_func(copy_func, ret->data[i]);
+    if (ret->data[i] == NULL) {
+      for (size_t j = 0; j < i; j++) {
+        if (ret->data[j] != NULL) {
+          call_free_func(free_func, ret->data[j]);
+        }
+      }
+      sk_free(ret);
+      return NULL;
+    }
+  }
+
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c
new file mode 100644
index 0000000..dc8e248
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c	
@@ -0,0 +1,110 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/thread.h>
+
+
+int CRYPTO_num_locks(void) { return 1; }
+
+void CRYPTO_set_locking_callback(void (*func)(int mode, int lock_num,
+                                              const char *file, int line)) {}
+
+void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
+                                          const char *file, int line) {
+  return NULL;
+}
+
+void CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int lock_num,
+                                              const char *file, int line)) {}
+
+const char *CRYPTO_get_lock_name(int lock_num) {
+  return "No old-style OpenSSL locks anymore";
+}
+
+int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *)) { return 1; }
+
+void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val) {}
+
+void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr) {}
+
+void CRYPTO_THREADID_current(CRYPTO_THREADID *id) {}
+
+void CRYPTO_set_id_callback(unsigned long (*func)(void)) {}
+
+void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(
+    *dyn_create_function)(const char *file, int line)) {}
+
+void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)) {}
+
+void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)(
+    struct CRYPTO_dynlock_value *l, const char *file, int line)) {}
+
+struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))(
+    const char *file, int line) {
+  return NULL;
+}
+
+void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
+                                               struct CRYPTO_dynlock_value *l,
+                                               const char *file, int line) {
+  return NULL;
+}
+
+void (*CRYPTO_get_dynlock_destroy_callback(void))(
+    struct CRYPTO_dynlock_value *l, const char *file, int line) {
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c.grpc_back
new file mode 100644
index 0000000..25acce1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread.c.grpc_back	
@@ -0,0 +1,110 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/thread.h>
+
+
+int CRYPTO_num_locks(void) { return 1; }
+
+void CRYPTO_set_locking_callback(void (*func)(int mode, int lock_num,
+                                              const char *file, int line)) {}
+
+void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
+                                          const char *file, int line) {
+  return NULL;
+}
+
+void CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int lock_num,
+                                              const char *file, int line)) {}
+
+const char *CRYPTO_get_lock_name(int lock_num) {
+  return "No old-style OpenSSL locks anymore";
+}
+
+int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *)) { return 1; }
+
+void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val) {}
+
+void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr) {}
+
+void CRYPTO_THREADID_current(CRYPTO_THREADID *id) {}
+
+void CRYPTO_set_id_callback(unsigned long (*func)(void)) {}
+
+void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(
+    *dyn_create_function)(const char *file, int line)) {}
+
+void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)) {}
+
+void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)(
+    struct CRYPTO_dynlock_value *l, const char *file, int line)) {}
+
+struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))(
+    const char *file, int line) {
+  return NULL;
+}
+
+void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
+                                               struct CRYPTO_dynlock_value *l,
+                                               const char *file, int line) {
+  return NULL;
+}
+
+void (*CRYPTO_get_dynlock_destroy_callback(void))(
+    struct CRYPTO_dynlock_value *l, const char *file, int line) {
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c
new file mode 100644
index 0000000..4f07b9d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c	
@@ -0,0 +1,59 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if !defined(OPENSSL_THREADS)
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (*once) {
+    return;
+  }
+  *once = 1;
+  init();
+}
+
+static void *g_thread_locals[NUM_OPENSSL_THREAD_LOCALS];
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  return g_thread_locals[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  g_thread_locals[index] = value;
+  return 1;
+}
+
+#endif  // !OPENSSL_THREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c.grpc_back
new file mode 100644
index 0000000..4f07b9d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_none.c.grpc_back	
@@ -0,0 +1,59 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if !defined(OPENSSL_THREADS)
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (*once) {
+    return;
+  }
+  *once = 1;
+  init();
+}
+
+static void *g_thread_locals[NUM_OPENSSL_THREAD_LOCALS];
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  return g_thread_locals[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  g_thread_locals[index] = value;
+  return 1;
+}
+
+#endif  // !OPENSSL_THREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c
new file mode 100644
index 0000000..3f378bf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c	
@@ -0,0 +1,206 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_PTHREADS)
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(sizeof(CRYPTO_MUTEX) >= sizeof(pthread_rwlock_t),
+                      "CRYPTO_MUTEX is too small");
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_init((pthread_rwlock_t *) lock, NULL) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_rdlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_wrlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_unlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_unlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {
+  pthread_rwlock_destroy((pthread_rwlock_t *) lock);
+}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_rdlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_wrlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_unlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_unlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (pthread_once(once, init) != 0) {
+    abort();
+  }
+}
+
+static pthread_mutex_t g_destructors_lock = PTHREAD_MUTEX_INITIALIZER;
+static thread_local_destructor_t g_destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+// thread_local_destructor is called when a thread exits. It releases thread
+// local data for that thread only.
+static void thread_local_destructor(void *arg) {
+  if (arg == NULL) {
+    return;
+  }
+
+  thread_local_destructor_t destructors[NUM_OPENSSL_THREAD_LOCALS];
+  if (pthread_mutex_lock(&g_destructors_lock) != 0) {
+    return;
+  }
+  OPENSSL_memcpy(destructors, g_destructors, sizeof(destructors));
+  pthread_mutex_unlock(&g_destructors_lock);
+
+  unsigned i;
+  void **pointers = arg;
+  for (i = 0; i < NUM_OPENSSL_THREAD_LOCALS; i++) {
+    if (destructors[i] != NULL) {
+      destructors[i](pointers[i]);
+    }
+  }
+
+  OPENSSL_free(pointers);
+}
+
+static pthread_once_t g_thread_local_init_once = PTHREAD_ONCE_INIT;
+static pthread_key_t g_thread_local_key;
+static int g_thread_local_key_created = 0;
+
+// OPENSSL_DANGEROUS_RELEASE_PTHREAD_KEY can be defined to cause
+// |pthread_key_delete| to be called in a destructor function. This can be
+// useful for programs that dlclose BoringSSL.
+//
+// Note that dlclose()ing BoringSSL is not supported and will leak memory:
+// thread-local values will be leaked as well as anything initialised via a
+// once. The |pthread_key_t| is destroyed because they run out very quickly,
+// while the other leaks are slow, and this allows code that happens to use
+// dlclose() despite all the problems to continue functioning.
+//
+// This is marked "dangerous" because it can cause multi-threaded processes to
+// crash (even if they don't use dlclose): if the destructor runs while other
+// threads are still executing then they may end up using an invalid key to
+// access thread-local variables.
+//
+// This may be removed after February 2020.
+#if defined(OPENSSL_DANGEROUS_RELEASE_PTHREAD_KEY) && \
+    (defined(__GNUC__) || defined(__clang__))
+// thread_key_destructor is called when the library is unloaded with dlclose.
+static void thread_key_destructor(void) __attribute__((destructor, unused));
+static void thread_key_destructor(void) {
+  if (g_thread_local_key_created) {
+    g_thread_local_key_created = 0;
+    pthread_key_delete(g_thread_local_key);
+  }
+}
+#endif
+
+static void thread_local_init(void) {
+  g_thread_local_key_created =
+      pthread_key_create(&g_thread_local_key, thread_local_destructor) == 0;
+}
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (!g_thread_local_key_created) {
+    return NULL;
+  }
+
+  void **pointers = pthread_getspecific(g_thread_local_key);
+  if (pointers == NULL) {
+    return NULL;
+  }
+  return pointers[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (!g_thread_local_key_created) {
+    destructor(value);
+    return 0;
+  }
+
+  void **pointers = pthread_getspecific(g_thread_local_key);
+  if (pointers == NULL) {
+    pointers = OPENSSL_malloc(sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pointers == NULL) {
+      destructor(value);
+      return 0;
+    }
+    OPENSSL_memset(pointers, 0, sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pthread_setspecific(g_thread_local_key, pointers) != 0) {
+      OPENSSL_free(pointers);
+      destructor(value);
+      return 0;
+    }
+  }
+
+  if (pthread_mutex_lock(&g_destructors_lock) != 0) {
+    destructor(value);
+    return 0;
+  }
+  g_destructors[index] = destructor;
+  pthread_mutex_unlock(&g_destructors_lock);
+
+  pointers[index] = value;
+  return 1;
+}
+
+#endif  // OPENSSL_PTHREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c.grpc_back
new file mode 100644
index 0000000..832e90e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_pthread.c.grpc_back	
@@ -0,0 +1,206 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_PTHREADS)
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(sizeof(CRYPTO_MUTEX) >= sizeof(pthread_rwlock_t),
+                      "CRYPTO_MUTEX is too small");
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_init((pthread_rwlock_t *) lock, NULL) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_rdlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_wrlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_unlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {
+  if (pthread_rwlock_unlock((pthread_rwlock_t *) lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {
+  pthread_rwlock_destroy((pthread_rwlock_t *) lock);
+}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_rdlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_wrlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_unlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  if (pthread_rwlock_unlock(&lock->lock) != 0) {
+    abort();
+  }
+}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (pthread_once(once, init) != 0) {
+    abort();
+  }
+}
+
+static pthread_mutex_t g_destructors_lock = PTHREAD_MUTEX_INITIALIZER;
+static thread_local_destructor_t g_destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+// thread_local_destructor is called when a thread exits. It releases thread
+// local data for that thread only.
+static void thread_local_destructor(void *arg) {
+  if (arg == NULL) {
+    return;
+  }
+
+  thread_local_destructor_t destructors[NUM_OPENSSL_THREAD_LOCALS];
+  if (pthread_mutex_lock(&g_destructors_lock) != 0) {
+    return;
+  }
+  OPENSSL_memcpy(destructors, g_destructors, sizeof(destructors));
+  pthread_mutex_unlock(&g_destructors_lock);
+
+  unsigned i;
+  void **pointers = arg;
+  for (i = 0; i < NUM_OPENSSL_THREAD_LOCALS; i++) {
+    if (destructors[i] != NULL) {
+      destructors[i](pointers[i]);
+    }
+  }
+
+  OPENSSL_free(pointers);
+}
+
+static pthread_once_t g_thread_local_init_once = PTHREAD_ONCE_INIT;
+static pthread_key_t g_thread_local_key;
+static int g_thread_local_key_created = 0;
+
+// OPENSSL_DANGEROUS_RELEASE_PTHREAD_KEY can be defined to cause
+// |pthread_key_delete| to be called in a destructor function. This can be
+// useful for programs that dlclose BoringSSL.
+//
+// Note that dlclose()ing BoringSSL is not supported and will leak memory:
+// thread-local values will be leaked as well as anything initialised via a
+// once. The |pthread_key_t| is destroyed because they run out very quickly,
+// while the other leaks are slow, and this allows code that happens to use
+// dlclose() despite all the problems to continue functioning.
+//
+// This is marked "dangerous" because it can cause multi-threaded processes to
+// crash (even if they don't use dlclose): if the destructor runs while other
+// threads are still executing then they may end up using an invalid key to
+// access thread-local variables.
+//
+// This may be removed after February 2020.
+#if defined(OPENSSL_DANGEROUS_RELEASE_PTHREAD_KEY) && \
+    (defined(__GNUC__) || defined(__clang__))
+// thread_key_destructor is called when the library is unloaded with dlclose.
+static void thread_key_destructor(void) __attribute__((destructor, unused));
+static void thread_key_destructor(void) {
+  if (g_thread_local_key_created) {
+    g_thread_local_key_created = 0;
+    pthread_key_delete(g_thread_local_key);
+  }
+}
+#endif
+
+static void thread_local_init(void) {
+  g_thread_local_key_created =
+      pthread_key_create(&g_thread_local_key, thread_local_destructor) == 0;
+}
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (!g_thread_local_key_created) {
+    return NULL;
+  }
+
+  void **pointers = pthread_getspecific(g_thread_local_key);
+  if (pointers == NULL) {
+    return NULL;
+  }
+  return pointers[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (!g_thread_local_key_created) {
+    destructor(value);
+    return 0;
+  }
+
+  void **pointers = pthread_getspecific(g_thread_local_key);
+  if (pointers == NULL) {
+    pointers = OPENSSL_malloc(sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pointers == NULL) {
+      destructor(value);
+      return 0;
+    }
+    OPENSSL_memset(pointers, 0, sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pthread_setspecific(g_thread_local_key, pointers) != 0) {
+      OPENSSL_free(pointers);
+      destructor(value);
+      return 0;
+    }
+  }
+
+  if (pthread_mutex_lock(&g_destructors_lock) != 0) {
+    destructor(value);
+    return 0;
+  }
+  g_destructors[index] = destructor;
+  pthread_mutex_unlock(&g_destructors_lock);
+
+  pointers[index] = value;
+  return 1;
+}
+
+#endif  // OPENSSL_PTHREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c
new file mode 100644
index 0000000..a981f03
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c	
@@ -0,0 +1,256 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_WINDOWS_THREADS)
+
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(sizeof(CRYPTO_MUTEX) >= sizeof(SRWLOCK),
+                      "CRYPTO_MUTEX is too small");
+
+static BOOL CALLBACK call_once_init(INIT_ONCE *once, void *arg, void **out) {
+  void (**init)(void) = (void (**)(void))arg;
+  (**init)();
+  return TRUE;
+}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (!InitOnceExecuteOnce(once, call_once_init, &init, NULL)) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {
+  InitializeSRWLock((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {
+  AcquireSRWLockShared((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {
+  AcquireSRWLockExclusive((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {
+  ReleaseSRWLockShared((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {
+  ReleaseSRWLockExclusive((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {
+  // SRWLOCKs require no cleanup.
+}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  AcquireSRWLockShared(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  AcquireSRWLockExclusive(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  ReleaseSRWLockShared(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  ReleaseSRWLockExclusive(&lock->lock);
+}
+
+static SRWLOCK g_destructors_lock = SRWLOCK_INIT;
+static thread_local_destructor_t g_destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+static CRYPTO_once_t g_thread_local_init_once = CRYPTO_ONCE_INIT;
+static DWORD g_thread_local_key;
+static int g_thread_local_failed;
+
+static void thread_local_init(void) {
+  g_thread_local_key = TlsAlloc();
+  g_thread_local_failed = (g_thread_local_key == TLS_OUT_OF_INDEXES);
+}
+
+static void NTAPI thread_local_destructor(PVOID module, DWORD reason,
+                                          PVOID reserved) {
+  // Only free memory on |DLL_THREAD_DETACH|, not |DLL_PROCESS_DETACH|. In
+  // VS2015's debug runtime, the C runtime has been unloaded by the time
+  // |DLL_PROCESS_DETACH| runs. See https://crbug.com/575795. This is consistent
+  // with |pthread_key_create| which does not call destructors on process exit,
+  // only thread exit.
+  if (reason != DLL_THREAD_DETACH) {
+    return;
+  }
+
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    return;
+  }
+
+  void **pointers = (void**) TlsGetValue(g_thread_local_key);
+  if (pointers == NULL) {
+    return;
+  }
+
+  thread_local_destructor_t destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+  AcquireSRWLockExclusive(&g_destructors_lock);
+  OPENSSL_memcpy(destructors, g_destructors, sizeof(destructors));
+  ReleaseSRWLockExclusive(&g_destructors_lock);
+
+  for (unsigned i = 0; i < NUM_OPENSSL_THREAD_LOCALS; i++) {
+    if (destructors[i] != NULL) {
+      destructors[i](pointers[i]);
+    }
+  }
+
+  OPENSSL_free(pointers);
+}
+
+// Thread Termination Callbacks.
+//
+// Windows doesn't support a per-thread destructor with its TLS primitives.
+// So, we build it manually by inserting a function to be called on each
+// thread's exit. This magic is from http://www.codeproject.com/threads/tls.asp
+// and it works for VC++ 7.0 and later.
+//
+// Force a reference to _tls_used to make the linker create the TLS directory
+// if it's not already there. (E.g. if __declspec(thread) is not used). Force
+// a reference to p_thread_callback_boringssl to prevent whole program
+// optimization from discarding the variable.
+//
+// Note, in the prefixed build, |p_thread_callback_boringssl| may be a macro.
+#define STRINGIFY(x) #x
+#define EXPAND_AND_STRINGIFY(x) STRINGIFY(x)
+#ifdef _WIN64
+__pragma(comment(linker, "/INCLUDE:_tls_used"))
+__pragma(comment(
+    linker, "/INCLUDE:" EXPAND_AND_STRINGIFY(p_thread_callback_boringssl)))
+#else
+__pragma(comment(linker, "/INCLUDE:__tls_used"))
+__pragma(comment(
+    linker, "/INCLUDE:_" EXPAND_AND_STRINGIFY(p_thread_callback_boringssl)))
+#endif
+
+// .CRT$XLA to .CRT$XLZ is an array of PIMAGE_TLS_CALLBACK pointers that are
+// called automatically by the OS loader code (not the CRT) when the module is
+// loaded and on thread creation. They are NOT called if the module has been
+// loaded by a LoadLibrary() call. It must have implicitly been loaded at
+// process startup.
+//
+// By implicitly loaded, I mean that it is directly referenced by the main EXE
+// or by one of its dependent DLLs. Delay-loaded DLL doesn't count as being
+// implicitly loaded.
+//
+// See VC\crt\src\tlssup.c for reference.
+
+// The linker must not discard p_thread_callback_boringssl. (We force a
+// reference to this variable with a linker /INCLUDE:symbol pragma to ensure
+// that.) If this variable is discarded, the OnThreadExit function will never
+// be called.
+#ifdef _WIN64
+
+// .CRT section is merged with .rdata on x64 so it must be constant data.
+#pragma const_seg(".CRT$XLC")
+// When defining a const variable, it must have external linkage to be sure the
+// linker doesn't discard it.
+extern const PIMAGE_TLS_CALLBACK p_thread_callback_boringssl;
+const PIMAGE_TLS_CALLBACK p_thread_callback_boringssl = thread_local_destructor;
+// Reset the default section.
+#pragma const_seg()
+
+#else
+
+#pragma data_seg(".CRT$XLC")
+PIMAGE_TLS_CALLBACK p_thread_callback_boringssl = thread_local_destructor;
+// Reset the default section.
+#pragma data_seg()
+
+#endif  // _WIN64
+
+static void **get_thread_locals(void) {
+  // |TlsGetValue| clears the last error even on success, so that callers may
+  // distinguish it successfully returning NULL or failing. It is documented to
+  // never fail if the argument is a valid index from |TlsAlloc|, so we do not
+  // need to handle this.
+  //
+  // However, this error-mangling behavior interferes with the caller's use of
+  // |GetLastError|. In particular |SSL_get_error| queries the error queue to
+  // determine whether the caller should look at the OS's errors. To avoid
+  // destroying state, save and restore the Windows error.
+  //
+  // https://msdn.microsoft.com/en-us/library/windows/desktop/ms686812(v=vs.85).aspx
+  DWORD last_error = GetLastError();
+  void **ret = TlsGetValue(g_thread_local_key);
+  SetLastError(last_error);
+  return ret;
+}
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    return NULL;
+  }
+
+  void **pointers = get_thread_locals();
+  if (pointers == NULL) {
+    return NULL;
+  }
+  return pointers[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    destructor(value);
+    return 0;
+  }
+
+  void **pointers = get_thread_locals();
+  if (pointers == NULL) {
+    pointers = OPENSSL_malloc(sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pointers == NULL) {
+      destructor(value);
+      return 0;
+    }
+    OPENSSL_memset(pointers, 0, sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (TlsSetValue(g_thread_local_key, pointers) == 0) {
+      OPENSSL_free(pointers);
+      destructor(value);
+      return 0;
+    }
+  }
+
+  AcquireSRWLockExclusive(&g_destructors_lock);
+  g_destructors[index] = destructor;
+  ReleaseSRWLockExclusive(&g_destructors_lock);
+
+  pointers[index] = value;
+  return 1;
+}
+
+#endif  // OPENSSL_WINDOWS_THREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c.grpc_back
new file mode 100644
index 0000000..c8e19f5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/thread_win.c.grpc_back	
@@ -0,0 +1,256 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#if defined(OPENSSL_WINDOWS_THREADS)
+
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+
+OPENSSL_STATIC_ASSERT(sizeof(CRYPTO_MUTEX) >= sizeof(SRWLOCK),
+                      "CRYPTO_MUTEX is too small");
+
+static BOOL CALLBACK call_once_init(INIT_ONCE *once, void *arg, void **out) {
+  void (**init)(void) = (void (**)(void))arg;
+  (**init)();
+  return TRUE;
+}
+
+void CRYPTO_once(CRYPTO_once_t *once, void (*init)(void)) {
+  if (!InitOnceExecuteOnce(once, call_once_init, &init, NULL)) {
+    abort();
+  }
+}
+
+void CRYPTO_MUTEX_init(CRYPTO_MUTEX *lock) {
+  InitializeSRWLock((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_lock_read(CRYPTO_MUTEX *lock) {
+  AcquireSRWLockShared((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_lock_write(CRYPTO_MUTEX *lock) {
+  AcquireSRWLockExclusive((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_unlock_read(CRYPTO_MUTEX *lock) {
+  ReleaseSRWLockShared((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_unlock_write(CRYPTO_MUTEX *lock) {
+  ReleaseSRWLockExclusive((SRWLOCK *) lock);
+}
+
+void CRYPTO_MUTEX_cleanup(CRYPTO_MUTEX *lock) {
+  // SRWLOCKs require no cleanup.
+}
+
+void CRYPTO_STATIC_MUTEX_lock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  AcquireSRWLockShared(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_lock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  AcquireSRWLockExclusive(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_read(struct CRYPTO_STATIC_MUTEX *lock) {
+  ReleaseSRWLockShared(&lock->lock);
+}
+
+void CRYPTO_STATIC_MUTEX_unlock_write(struct CRYPTO_STATIC_MUTEX *lock) {
+  ReleaseSRWLockExclusive(&lock->lock);
+}
+
+static SRWLOCK g_destructors_lock = SRWLOCK_INIT;
+static thread_local_destructor_t g_destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+static CRYPTO_once_t g_thread_local_init_once = CRYPTO_ONCE_INIT;
+static DWORD g_thread_local_key;
+static int g_thread_local_failed;
+
+static void thread_local_init(void) {
+  g_thread_local_key = TlsAlloc();
+  g_thread_local_failed = (g_thread_local_key == TLS_OUT_OF_INDEXES);
+}
+
+static void NTAPI thread_local_destructor(PVOID module, DWORD reason,
+                                          PVOID reserved) {
+  // Only free memory on |DLL_THREAD_DETACH|, not |DLL_PROCESS_DETACH|. In
+  // VS2015's debug runtime, the C runtime has been unloaded by the time
+  // |DLL_PROCESS_DETACH| runs. See https://crbug.com/575795. This is consistent
+  // with |pthread_key_create| which does not call destructors on process exit,
+  // only thread exit.
+  if (reason != DLL_THREAD_DETACH) {
+    return;
+  }
+
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    return;
+  }
+
+  void **pointers = (void**) TlsGetValue(g_thread_local_key);
+  if (pointers == NULL) {
+    return;
+  }
+
+  thread_local_destructor_t destructors[NUM_OPENSSL_THREAD_LOCALS];
+
+  AcquireSRWLockExclusive(&g_destructors_lock);
+  OPENSSL_memcpy(destructors, g_destructors, sizeof(destructors));
+  ReleaseSRWLockExclusive(&g_destructors_lock);
+
+  for (unsigned i = 0; i < NUM_OPENSSL_THREAD_LOCALS; i++) {
+    if (destructors[i] != NULL) {
+      destructors[i](pointers[i]);
+    }
+  }
+
+  OPENSSL_free(pointers);
+}
+
+// Thread Termination Callbacks.
+//
+// Windows doesn't support a per-thread destructor with its TLS primitives.
+// So, we build it manually by inserting a function to be called on each
+// thread's exit. This magic is from http://www.codeproject.com/threads/tls.asp
+// and it works for VC++ 7.0 and later.
+//
+// Force a reference to _tls_used to make the linker create the TLS directory
+// if it's not already there. (E.g. if __declspec(thread) is not used). Force
+// a reference to p_thread_callback_boringssl to prevent whole program
+// optimization from discarding the variable.
+//
+// Note, in the prefixed build, |p_thread_callback_boringssl| may be a macro.
+#define STRINGIFY(x) #x
+#define EXPAND_AND_STRINGIFY(x) STRINGIFY(x)
+#ifdef _WIN64
+__pragma(comment(linker, "/INCLUDE:_tls_used"))
+__pragma(comment(
+    linker, "/INCLUDE:" EXPAND_AND_STRINGIFY(p_thread_callback_boringssl)))
+#else
+__pragma(comment(linker, "/INCLUDE:__tls_used"))
+__pragma(comment(
+    linker, "/INCLUDE:_" EXPAND_AND_STRINGIFY(p_thread_callback_boringssl)))
+#endif
+
+// .CRT$XLA to .CRT$XLZ is an array of PIMAGE_TLS_CALLBACK pointers that are
+// called automatically by the OS loader code (not the CRT) when the module is
+// loaded and on thread creation. They are NOT called if the module has been
+// loaded by a LoadLibrary() call. It must have implicitly been loaded at
+// process startup.
+//
+// By implicitly loaded, I mean that it is directly referenced by the main EXE
+// or by one of its dependent DLLs. Delay-loaded DLL doesn't count as being
+// implicitly loaded.
+//
+// See VC\crt\src\tlssup.c for reference.
+
+// The linker must not discard p_thread_callback_boringssl. (We force a
+// reference to this variable with a linker /INCLUDE:symbol pragma to ensure
+// that.) If this variable is discarded, the OnThreadExit function will never
+// be called.
+#ifdef _WIN64
+
+// .CRT section is merged with .rdata on x64 so it must be constant data.
+#pragma const_seg(".CRT$XLC")
+// When defining a const variable, it must have external linkage to be sure the
+// linker doesn't discard it.
+extern const PIMAGE_TLS_CALLBACK p_thread_callback_boringssl;
+const PIMAGE_TLS_CALLBACK p_thread_callback_boringssl = thread_local_destructor;
+// Reset the default section.
+#pragma const_seg()
+
+#else
+
+#pragma data_seg(".CRT$XLC")
+PIMAGE_TLS_CALLBACK p_thread_callback_boringssl = thread_local_destructor;
+// Reset the default section.
+#pragma data_seg()
+
+#endif  // _WIN64
+
+static void **get_thread_locals(void) {
+  // |TlsGetValue| clears the last error even on success, so that callers may
+  // distinguish it successfully returning NULL or failing. It is documented to
+  // never fail if the argument is a valid index from |TlsAlloc|, so we do not
+  // need to handle this.
+  //
+  // However, this error-mangling behavior interferes with the caller's use of
+  // |GetLastError|. In particular |SSL_get_error| queries the error queue to
+  // determine whether the caller should look at the OS's errors. To avoid
+  // destroying state, save and restore the Windows error.
+  //
+  // https://msdn.microsoft.com/en-us/library/windows/desktop/ms686812(v=vs.85).aspx
+  DWORD last_error = GetLastError();
+  void **ret = TlsGetValue(g_thread_local_key);
+  SetLastError(last_error);
+  return ret;
+}
+
+void *CRYPTO_get_thread_local(thread_local_data_t index) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    return NULL;
+  }
+
+  void **pointers = get_thread_locals();
+  if (pointers == NULL) {
+    return NULL;
+  }
+  return pointers[index];
+}
+
+int CRYPTO_set_thread_local(thread_local_data_t index, void *value,
+                            thread_local_destructor_t destructor) {
+  CRYPTO_once(&g_thread_local_init_once, thread_local_init);
+  if (g_thread_local_failed) {
+    destructor(value);
+    return 0;
+  }
+
+  void **pointers = get_thread_locals();
+  if (pointers == NULL) {
+    pointers = OPENSSL_malloc(sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (pointers == NULL) {
+      destructor(value);
+      return 0;
+    }
+    OPENSSL_memset(pointers, 0, sizeof(void *) * NUM_OPENSSL_THREAD_LOCALS);
+    if (TlsSetValue(g_thread_local_key, pointers) == 0) {
+      OPENSSL_free(pointers);
+      destructor(value);
+      return 0;
+    }
+  }
+
+  AcquireSRWLockExclusive(&g_destructors_lock);
+  g_destructors[index] = destructor;
+  ReleaseSRWLockExclusive(&g_destructors_lock);
+
+  pointers[index] = value;
+  return 1;
+}
+
+#endif  // OPENSSL_WINDOWS_THREADS
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c
new file mode 100644
index 0000000..7186690
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
+                unsigned char *md, unsigned int *len)
+{
+    int i, ret;
+    unsigned char *str, *p;
+
+    i = i2d(data, NULL);
+    if ((str = (unsigned char *)OPENSSL_malloc(i)) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    p = str;
+    i2d(data, &p);
+
+    ret = EVP_Digest(str, i, md, len, type, NULL);
+    OPENSSL_free(str);
+    return ret;
+}
+
+int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,
+                     unsigned char *md, unsigned int *len)
+{
+    int i, ret;
+    unsigned char *str = NULL;
+
+    i = ASN1_item_i2d(asn, &str, it);
+    if (!str)
+        return (0);
+
+    ret = EVP_Digest(str, i, md, len, type, NULL);
+    OPENSSL_free(str);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c.grpc_back
new file mode 100644
index 0000000..b88d6ac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_digest.c.grpc_back	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <openssl/asn1.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
+                unsigned char *md, unsigned int *len)
+{
+    int i, ret;
+    unsigned char *str, *p;
+
+    i = i2d(data, NULL);
+    if ((str = (unsigned char *)OPENSSL_malloc(i)) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    p = str;
+    i2d(data, &p);
+
+    ret = EVP_Digest(str, i, md, len, type, NULL);
+    OPENSSL_free(str);
+    return ret;
+}
+
+int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,
+                     unsigned char *md, unsigned int *len)
+{
+    int i, ret;
+    unsigned char *str = NULL;
+
+    i = ASN1_item_i2d(asn, &str, it);
+    if (!str)
+        return (0);
+
+    ret = EVP_Digest(str, i, md, len, type, NULL);
+    OPENSSL_free(str);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c
new file mode 100644
index 0000000..c3d5cb8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+#include "internal.h"
+
+int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1,
+                   X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn,
+                   EVP_PKEY *pkey, const EVP_MD *type)
+{
+    EVP_MD_CTX ctx;
+    EVP_MD_CTX_init(&ctx);
+    if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey)) {
+        EVP_MD_CTX_cleanup(&ctx);
+        return 0;
+    }
+    return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx);
+}
+
+int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+                       X509_ALGOR *algor1, X509_ALGOR *algor2,
+                       ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx)
+{
+    EVP_PKEY *pkey;
+    unsigned char *buf_in = NULL, *buf_out = NULL;
+    size_t inl = 0, outl = 0;
+
+    pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+
+    /* Write out the requested copies of the AlgorithmIdentifier. */
+    if (algor1 && !x509_digest_sign_algorithm(ctx, algor1)) {
+        goto err;
+    }
+    if (algor2 && !x509_digest_sign_algorithm(ctx, algor2)) {
+        goto err;
+    }
+
+    inl = ASN1_item_i2d(asn, &buf_in, it);
+    outl = EVP_PKEY_size(pkey);
+    buf_out = OPENSSL_malloc((unsigned int)outl);
+    if ((buf_in == NULL) || (buf_out == NULL)) {
+        outl = 0;
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (!EVP_DigestSign(ctx, buf_out, &outl, buf_in, inl)) {
+        outl = 0;
+        OPENSSL_PUT_ERROR(X509, ERR_R_EVP_LIB);
+        goto err;
+    }
+    if (signature->data != NULL)
+        OPENSSL_free(signature->data);
+    signature->data = buf_out;
+    buf_out = NULL;
+    signature->length = outl;
+    /*
+     * In the interests of compatibility, I'll make sure that the bit string
+     * has a 'not-used bits' value of 0
+     */
+    signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+    signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ err:
+    EVP_MD_CTX_cleanup(ctx);
+    OPENSSL_free(buf_in);
+    OPENSSL_free(buf_out);
+    return (outl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c.grpc_back
new file mode 100644
index 0000000..6c7f713
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_sign.c.grpc_back	
@@ -0,0 +1,128 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+#include "internal.h"
+
+int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1,
+                   X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn,
+                   EVP_PKEY *pkey, const EVP_MD *type)
+{
+    EVP_MD_CTX ctx;
+    EVP_MD_CTX_init(&ctx);
+    if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey)) {
+        EVP_MD_CTX_cleanup(&ctx);
+        return 0;
+    }
+    return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx);
+}
+
+int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+                       X509_ALGOR *algor1, X509_ALGOR *algor2,
+                       ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx)
+{
+    EVP_PKEY *pkey;
+    unsigned char *buf_in = NULL, *buf_out = NULL;
+    size_t inl = 0, outl = 0;
+
+    pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+
+    /* Write out the requested copies of the AlgorithmIdentifier. */
+    if (algor1 && !x509_digest_sign_algorithm(ctx, algor1)) {
+        goto err;
+    }
+    if (algor2 && !x509_digest_sign_algorithm(ctx, algor2)) {
+        goto err;
+    }
+
+    inl = ASN1_item_i2d(asn, &buf_in, it);
+    outl = EVP_PKEY_size(pkey);
+    buf_out = OPENSSL_malloc((unsigned int)outl);
+    if ((buf_in == NULL) || (buf_out == NULL)) {
+        outl = 0;
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (!EVP_DigestSign(ctx, buf_out, &outl, buf_in, inl)) {
+        outl = 0;
+        OPENSSL_PUT_ERROR(X509, ERR_R_EVP_LIB);
+        goto err;
+    }
+    if (signature->data != NULL)
+        OPENSSL_free(signature->data);
+    signature->data = buf_out;
+    buf_out = NULL;
+    signature->length = outl;
+    /*
+     * In the interests of compatibility, I'll make sure that the bit string
+     * has a 'not-used bits' value of 0
+     */
+    signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+    signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ err:
+    EVP_MD_CTX_cleanup(ctx);
+    OPENSSL_free(buf_in);
+    OPENSSL_free(buf_out);
+    return (outl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c
new file mode 100644
index 0000000..1d89f39
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c	
@@ -0,0 +1,653 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+
+#include "charmap.h"
+#include "../asn1/asn1_locl.h"
+
+/*
+ * ASN1_STRING_print_ex() and X509_NAME_print_ex(). Enhanced string and name
+ * printing routines handling multibyte characters, RFC2253 and a host of
+ * other options.
+ */
+
+#define CHARTYPE_BS_ESC         (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
+
+#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
+                  ASN1_STRFLGS_ESC_QUOTE | \
+                  ASN1_STRFLGS_ESC_CTRL | \
+                  ASN1_STRFLGS_ESC_MSB)
+
+static int send_bio_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (BIO_write(arg, buf, len) != len)
+        return 0;
+    return 1;
+}
+
+static int send_fp_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (fwrite(buf, 1, len, arg) != (unsigned int)len)
+        return 0;
+    return 1;
+}
+
+typedef int char_io (void *arg, const void *buf, int len);
+
+/*
+ * This function handles display of strings, one character at a time. It is
+ * passed an unsigned long for each character because it could come from 2 or
+ * even 4 byte forms.
+ */
+
+#define HEX_SIZE(type) (sizeof(type)*2)
+
+static int do_esc_char(uint32_t c, unsigned char flags, char *do_quotes,
+                       char_io *io_ch, void *arg)
+{
+    unsigned char chflgs, chtmp;
+    char tmphex[HEX_SIZE(uint32_t) + 3];
+
+    if (c > 0xffff) {
+        BIO_snprintf(tmphex, sizeof tmphex, "\\W%08" PRIX32, c);
+        if (!io_ch(arg, tmphex, 10))
+            return -1;
+        return 10;
+    }
+    if (c > 0xff) {
+        BIO_snprintf(tmphex, sizeof tmphex, "\\U%04" PRIX32, c);
+        if (!io_ch(arg, tmphex, 6))
+            return -1;
+        return 6;
+    }
+    chtmp = (unsigned char)c;
+    if (chtmp > 0x7f)
+        chflgs = flags & ASN1_STRFLGS_ESC_MSB;
+    else
+        chflgs = char_type[chtmp] & flags;
+    if (chflgs & CHARTYPE_BS_ESC) {
+        /* If we don't escape with quotes, signal we need quotes */
+        if (chflgs & ASN1_STRFLGS_ESC_QUOTE) {
+            if (do_quotes)
+                *do_quotes = 1;
+            if (!io_ch(arg, &chtmp, 1))
+                return -1;
+            return 1;
+        }
+        if (!io_ch(arg, "\\", 1))
+            return -1;
+        if (!io_ch(arg, &chtmp, 1))
+            return -1;
+        return 2;
+    }
+    if (chflgs & (ASN1_STRFLGS_ESC_CTRL | ASN1_STRFLGS_ESC_MSB)) {
+        BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
+        if (!io_ch(arg, tmphex, 3))
+            return -1;
+        return 3;
+    }
+    /*
+     * If we get this far and do any escaping at all must escape the escape
+     * character itself: backslash.
+     */
+    if (chtmp == '\\' && flags & ESC_FLAGS) {
+        if (!io_ch(arg, "\\\\", 2))
+            return -1;
+        return 2;
+    }
+    if (!io_ch(arg, &chtmp, 1))
+        return -1;
+    return 1;
+}
+
+#define BUF_TYPE_WIDTH_MASK     0x7
+#define BUF_TYPE_CONVUTF8       0x8
+
+/*
+ * This function sends each character in a buffer to do_esc_char(). It
+ * interprets the content formats and converts to or from UTF8 as
+ * appropriate.
+ */
+
+static int do_buf(unsigned char *buf, int buflen,
+                  int type, unsigned char flags, char *quotes, char_io *io_ch,
+                  void *arg)
+{
+    int i, outlen, len, charwidth;
+    unsigned char orflags, *p, *q;
+    uint32_t c;
+    p = buf;
+    q = buf + buflen;
+    outlen = 0;
+    charwidth = type & BUF_TYPE_WIDTH_MASK;
+
+    switch (charwidth) {
+    case 4:
+        if (buflen & 3) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_UNIVERSALSTRING);
+            return -1;
+        }
+        break;
+    case 2:
+        if (buflen & 1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_BMPSTRING);
+            return -1;
+        }
+        break;
+    default:
+        break;
+    }
+
+    while (p != q) {
+        if (p == buf && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_FIRST_ESC_2253;
+        else
+            orflags = 0;
+        switch (charwidth) {
+        case 4:
+            c = ((uint32_t)*p++) << 24;
+            c |= ((uint32_t)*p++) << 16;
+            c |= ((uint32_t)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 2:
+            c = ((uint32_t)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 1:
+            c = *p++;
+            break;
+
+        case 0:
+            i = UTF8_getc(p, buflen, &c);
+            if (i < 0)
+                return -1;      /* Invalid UTF8String */
+            buflen -= i;
+            p += i;
+            break;
+        default:
+            return -1;          /* invalid width */
+        }
+        if (p == q && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_LAST_ESC_2253;
+        if (type & BUF_TYPE_CONVUTF8) {
+            unsigned char utfbuf[6];
+            int utflen;
+            utflen = UTF8_putc(utfbuf, sizeof utfbuf, c);
+            for (i = 0; i < utflen; i++) {
+                /*
+                 * We don't need to worry about setting orflags correctly
+                 * because if utflen==1 its value will be correct anyway
+                 * otherwise each character will be > 0x7f and so the
+                 * character will never be escaped on first and last.
+                 */
+                len =
+                    do_esc_char(utfbuf[i], (unsigned char)(flags | orflags),
+                                quotes, io_ch, arg);
+                if (len < 0)
+                    return -1;
+                outlen += len;
+            }
+        } else {
+            len =
+                do_esc_char(c, (unsigned char)(flags | orflags), quotes,
+                            io_ch, arg);
+            if (len < 0)
+                return -1;
+            outlen += len;
+        }
+    }
+    return outlen;
+}
+
+/* This function hex dumps a buffer of characters */
+
+static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf,
+                       int buflen)
+{
+    static const char hexdig[] = "0123456789ABCDEF";
+    unsigned char *p, *q;
+    char hextmp[2];
+    if (arg) {
+        p = buf;
+        q = buf + buflen;
+        while (p != q) {
+            hextmp[0] = hexdig[*p >> 4];
+            hextmp[1] = hexdig[*p & 0xf];
+            if (!io_ch(arg, hextmp, 2))
+                return -1;
+            p++;
+        }
+    }
+    return buflen << 1;
+}
+
+/*
+ * "dump" a string. This is done when the type is unknown, or the flags
+ * request it. We can either dump the content octets or the entire DER
+ * encoding. This uses the RFC2253 #01234 format.
+ */
+
+static int do_dump(unsigned long lflags, char_io *io_ch, void *arg,
+                   ASN1_STRING *str)
+{
+    /*
+     * Placing the ASN1_STRING in a temp ASN1_TYPE allows the DER encoding to
+     * readily obtained
+     */
+    ASN1_TYPE t;
+    unsigned char *der_buf, *p;
+    int outlen, der_len;
+
+    if (!io_ch(arg, "#", 1))
+        return -1;
+    /* If we don't dump DER encoding just dump content octets */
+    if (!(lflags & ASN1_STRFLGS_DUMP_DER)) {
+        outlen = do_hex_dump(io_ch, arg, str->data, str->length);
+        if (outlen < 0)
+            return -1;
+        return outlen + 1;
+    }
+    t.type = str->type;
+    t.value.ptr = (char *)str;
+    der_len = i2d_ASN1_TYPE(&t, NULL);
+    der_buf = OPENSSL_malloc(der_len);
+    if (!der_buf)
+        return -1;
+    p = der_buf;
+    i2d_ASN1_TYPE(&t, &p);
+    outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
+    OPENSSL_free(der_buf);
+    if (outlen < 0)
+        return -1;
+    return outlen + 1;
+}
+
+/*
+ * Lookup table to convert tags to character widths, 0 = UTF8 encoded, -1 is
+ * used for non string types otherwise it is the number of bytes per
+ * character
+ */
+
+static const signed char tag2nbyte[] = {
+    -1, -1, -1, -1, -1,         /* 0-4 */
+    -1, -1, -1, -1, -1,         /* 5-9 */
+    -1, -1, 0, -1,              /* 10-13 */
+    -1, -1, -1, -1,             /* 15-17 */
+    1, 1, 1,                    /* 18-20 */
+    -1, 1, 1, 1,                /* 21-24 */
+    -1, 1, -1,                  /* 25-27 */
+    4, -1, 2                    /* 28-30 */
+};
+
+/*
+ * This is the main function, print out an ASN1_STRING taking note of various
+ * escape and display options. Returns number of characters written or -1 if
+ * an error occurred.
+ */
+
+static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags,
+                       ASN1_STRING *str)
+{
+    int outlen, len;
+    int type;
+    char quotes;
+    unsigned char flags;
+    quotes = 0;
+    /* Keep a copy of escape flags */
+    flags = (unsigned char)(lflags & ESC_FLAGS);
+
+    type = str->type;
+
+    outlen = 0;
+
+    if (lflags & ASN1_STRFLGS_SHOW_TYPE) {
+        const char *tagname;
+        tagname = ASN1_tag2str(type);
+        outlen += strlen(tagname);
+        if (!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1))
+            return -1;
+        outlen++;
+    }
+
+    /* Decide what to do with type, either dump content or display it */
+
+    /* Dump everything */
+    if (lflags & ASN1_STRFLGS_DUMP_ALL)
+        type = -1;
+    /* Ignore the string type */
+    else if (lflags & ASN1_STRFLGS_IGNORE_TYPE)
+        type = 1;
+    else {
+        /* Else determine width based on type */
+        if ((type > 0) && (type < 31))
+            type = tag2nbyte[type];
+        else
+            type = -1;
+        if ((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN))
+            type = 1;
+    }
+
+    if (type == -1) {
+        len = do_dump(lflags, io_ch, arg, str);
+        if (len < 0)
+            return -1;
+        outlen += len;
+        return outlen;
+    }
+
+    if (lflags & ASN1_STRFLGS_UTF8_CONVERT) {
+        /*
+         * Note: if string is UTF8 and we want to convert to UTF8 then we
+         * just interpret it as 1 byte per character to avoid converting
+         * twice.
+         */
+        if (!type)
+            type = 1;
+        else
+            type |= BUF_TYPE_CONVUTF8;
+    }
+
+    len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
+    if (len < 0)
+        return -1;
+    outlen += len;
+    if (quotes)
+        outlen += 2;
+    if (!arg)
+        return outlen;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    if (do_buf(str->data, str->length, type, flags, NULL, io_ch, arg) < 0)
+        return -1;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    return outlen;
+}
+
+/* Used for line indenting: print 'indent' spaces */
+
+static int do_indent(char_io *io_ch, void *arg, int indent)
+{
+    int i;
+    for (i = 0; i < indent; i++)
+        if (!io_ch(arg, " ", 1))
+            return 0;
+    return 1;
+}
+
+#define FN_WIDTH_LN     25
+#define FN_WIDTH_SN     10
+
+static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n,
+                      int indent, unsigned long flags)
+{
+    int i, prev = -1, orflags, cnt;
+    int fn_opt, fn_nid;
+    ASN1_OBJECT *fn;
+    ASN1_STRING *val;
+    X509_NAME_ENTRY *ent;
+    char objtmp[80];
+    const char *objbuf;
+    int outlen, len;
+    const char *sep_dn, *sep_mv, *sep_eq;
+    int sep_dn_len, sep_mv_len, sep_eq_len;
+    if (indent < 0)
+        indent = 0;
+    outlen = indent;
+    if (!do_indent(io_ch, arg, indent))
+        return -1;
+    switch (flags & XN_FLAG_SEP_MASK) {
+    case XN_FLAG_SEP_MULTILINE:
+        sep_dn = "\n";
+        sep_dn_len = 1;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        break;
+
+    case XN_FLAG_SEP_COMMA_PLUS:
+        sep_dn = ",";
+        sep_dn_len = 1;
+        sep_mv = "+";
+        sep_mv_len = 1;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_CPLUS_SPC:
+        sep_dn = ", ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_SPLUS_SPC:
+        sep_dn = "; ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    default:
+        return -1;
+    }
+
+    if (flags & XN_FLAG_SPC_EQ) {
+        sep_eq = " = ";
+        sep_eq_len = 3;
+    } else {
+        sep_eq = "=";
+        sep_eq_len = 1;
+    }
+
+    fn_opt = flags & XN_FLAG_FN_MASK;
+
+    cnt = X509_NAME_entry_count(n);
+    for (i = 0; i < cnt; i++) {
+        if (flags & XN_FLAG_DN_REV)
+            ent = X509_NAME_get_entry(n, cnt - i - 1);
+        else
+            ent = X509_NAME_get_entry(n, i);
+        if (prev != -1) {
+            if (prev == ent->set) {
+                if (!io_ch(arg, sep_mv, sep_mv_len))
+                    return -1;
+                outlen += sep_mv_len;
+            } else {
+                if (!io_ch(arg, sep_dn, sep_dn_len))
+                    return -1;
+                outlen += sep_dn_len;
+                if (!do_indent(io_ch, arg, indent))
+                    return -1;
+                outlen += indent;
+            }
+        }
+        prev = ent->set;
+        fn = X509_NAME_ENTRY_get_object(ent);
+        val = X509_NAME_ENTRY_get_data(ent);
+        fn_nid = OBJ_obj2nid(fn);
+        if (fn_opt != XN_FLAG_FN_NONE) {
+            int objlen, fld_len;
+            if ((fn_opt == XN_FLAG_FN_OID) || (fn_nid == NID_undef)) {
+                OBJ_obj2txt(objtmp, sizeof objtmp, fn, 1);
+                fld_len = 0;    /* XXX: what should this be? */
+                objbuf = objtmp;
+            } else {
+                if (fn_opt == XN_FLAG_FN_SN) {
+                    fld_len = FN_WIDTH_SN;
+                    objbuf = OBJ_nid2sn(fn_nid);
+                } else if (fn_opt == XN_FLAG_FN_LN) {
+                    fld_len = FN_WIDTH_LN;
+                    objbuf = OBJ_nid2ln(fn_nid);
+                } else {
+                    fld_len = 0; /* XXX: what should this be? */
+                    objbuf = "";
+                }
+            }
+            objlen = strlen(objbuf);
+            if (!io_ch(arg, objbuf, objlen))
+                return -1;
+            if ((objlen < fld_len) && (flags & XN_FLAG_FN_ALIGN)) {
+                if (!do_indent(io_ch, arg, fld_len - objlen))
+                    return -1;
+                outlen += fld_len - objlen;
+            }
+            if (!io_ch(arg, sep_eq, sep_eq_len))
+                return -1;
+            outlen += objlen + sep_eq_len;
+        }
+        /*
+         * If the field name is unknown then fix up the DER dump flag. We
+         * might want to limit this further so it will DER dump on anything
+         * other than a few 'standard' fields.
+         */
+        if ((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
+            orflags = ASN1_STRFLGS_DUMP_ALL;
+        else
+            orflags = 0;
+
+        len = do_print_ex(io_ch, arg, flags | orflags, val);
+        if (len < 0)
+            return -1;
+        outlen += len;
+    }
+    return outlen;
+}
+
+/* Wrappers round the main functions */
+
+int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent,
+                       unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT)
+        return X509_NAME_print(out, nm, indent);
+    return do_name_ex(send_bio_chars, out, nm, indent, flags);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent,
+                          unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT) {
+        BIO *btmp;
+        int ret;
+        btmp = BIO_new_fp(fp, BIO_NOCLOSE);
+        if (!btmp)
+            return -1;
+        ret = X509_NAME_print(btmp, nm, indent);
+        BIO_free(btmp);
+        return ret;
+    }
+    return do_name_ex(send_fp_chars, fp, nm, indent, flags);
+}
+#endif
+
+int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_bio_chars, out, flags, str);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_fp_chars, fp, flags, str);
+}
+#endif
+
+/*
+ * Utility function: convert any string type to UTF8, returns number of bytes
+ * in output string or a negative error code
+ */
+
+int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
+{
+    ASN1_STRING stmp, *str = &stmp;
+    int mbflag, type, ret;
+    if (!in)
+        return -1;
+    type = in->type;
+    if ((type < 0) || (type > 30))
+        return -1;
+    mbflag = tag2nbyte[type];
+    if (mbflag == -1)
+        return -1;
+    mbflag |= MBSTRING_FLAG;
+    stmp.data = NULL;
+    stmp.length = 0;
+    stmp.flags = 0;
+    ret =
+        ASN1_mbstring_copy(&str, in->data, in->length, mbflag,
+                           B_ASN1_UTF8STRING);
+    if (ret < 0)
+        return ret;
+    *out = stmp.data;
+    return stmp.length;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c.grpc_back
new file mode 100644
index 0000000..6dc183a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_strex.c.grpc_back	
@@ -0,0 +1,653 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+#include "charmap.h"
+#include "../asn1/asn1_locl.h"
+
+/*
+ * ASN1_STRING_print_ex() and X509_NAME_print_ex(). Enhanced string and name
+ * printing routines handling multibyte characters, RFC2253 and a host of
+ * other options.
+ */
+
+#define CHARTYPE_BS_ESC         (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
+
+#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
+                  ASN1_STRFLGS_ESC_QUOTE | \
+                  ASN1_STRFLGS_ESC_CTRL | \
+                  ASN1_STRFLGS_ESC_MSB)
+
+static int send_bio_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (BIO_write(arg, buf, len) != len)
+        return 0;
+    return 1;
+}
+
+static int send_fp_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (fwrite(buf, 1, len, arg) != (unsigned int)len)
+        return 0;
+    return 1;
+}
+
+typedef int char_io (void *arg, const void *buf, int len);
+
+/*
+ * This function handles display of strings, one character at a time. It is
+ * passed an unsigned long for each character because it could come from 2 or
+ * even 4 byte forms.
+ */
+
+#define HEX_SIZE(type) (sizeof(type)*2)
+
+static int do_esc_char(uint32_t c, unsigned char flags, char *do_quotes,
+                       char_io *io_ch, void *arg)
+{
+    unsigned char chflgs, chtmp;
+    char tmphex[HEX_SIZE(uint32_t) + 3];
+
+    if (c > 0xffff) {
+        BIO_snprintf(tmphex, sizeof tmphex, "\\W%08" PRIX32, c);
+        if (!io_ch(arg, tmphex, 10))
+            return -1;
+        return 10;
+    }
+    if (c > 0xff) {
+        BIO_snprintf(tmphex, sizeof tmphex, "\\U%04" PRIX32, c);
+        if (!io_ch(arg, tmphex, 6))
+            return -1;
+        return 6;
+    }
+    chtmp = (unsigned char)c;
+    if (chtmp > 0x7f)
+        chflgs = flags & ASN1_STRFLGS_ESC_MSB;
+    else
+        chflgs = char_type[chtmp] & flags;
+    if (chflgs & CHARTYPE_BS_ESC) {
+        /* If we don't escape with quotes, signal we need quotes */
+        if (chflgs & ASN1_STRFLGS_ESC_QUOTE) {
+            if (do_quotes)
+                *do_quotes = 1;
+            if (!io_ch(arg, &chtmp, 1))
+                return -1;
+            return 1;
+        }
+        if (!io_ch(arg, "\\", 1))
+            return -1;
+        if (!io_ch(arg, &chtmp, 1))
+            return -1;
+        return 2;
+    }
+    if (chflgs & (ASN1_STRFLGS_ESC_CTRL | ASN1_STRFLGS_ESC_MSB)) {
+        BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
+        if (!io_ch(arg, tmphex, 3))
+            return -1;
+        return 3;
+    }
+    /*
+     * If we get this far and do any escaping at all must escape the escape
+     * character itself: backslash.
+     */
+    if (chtmp == '\\' && flags & ESC_FLAGS) {
+        if (!io_ch(arg, "\\\\", 2))
+            return -1;
+        return 2;
+    }
+    if (!io_ch(arg, &chtmp, 1))
+        return -1;
+    return 1;
+}
+
+#define BUF_TYPE_WIDTH_MASK     0x7
+#define BUF_TYPE_CONVUTF8       0x8
+
+/*
+ * This function sends each character in a buffer to do_esc_char(). It
+ * interprets the content formats and converts to or from UTF8 as
+ * appropriate.
+ */
+
+static int do_buf(unsigned char *buf, int buflen,
+                  int type, unsigned char flags, char *quotes, char_io *io_ch,
+                  void *arg)
+{
+    int i, outlen, len, charwidth;
+    unsigned char orflags, *p, *q;
+    uint32_t c;
+    p = buf;
+    q = buf + buflen;
+    outlen = 0;
+    charwidth = type & BUF_TYPE_WIDTH_MASK;
+
+    switch (charwidth) {
+    case 4:
+        if (buflen & 3) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_UNIVERSALSTRING);
+            return -1;
+        }
+        break;
+    case 2:
+        if (buflen & 1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_BMPSTRING);
+            return -1;
+        }
+        break;
+    default:
+        break;
+    }
+
+    while (p != q) {
+        if (p == buf && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_FIRST_ESC_2253;
+        else
+            orflags = 0;
+        switch (charwidth) {
+        case 4:
+            c = ((uint32_t)*p++) << 24;
+            c |= ((uint32_t)*p++) << 16;
+            c |= ((uint32_t)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 2:
+            c = ((uint32_t)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 1:
+            c = *p++;
+            break;
+
+        case 0:
+            i = UTF8_getc(p, buflen, &c);
+            if (i < 0)
+                return -1;      /* Invalid UTF8String */
+            buflen -= i;
+            p += i;
+            break;
+        default:
+            return -1;          /* invalid width */
+        }
+        if (p == q && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_LAST_ESC_2253;
+        if (type & BUF_TYPE_CONVUTF8) {
+            unsigned char utfbuf[6];
+            int utflen;
+            utflen = UTF8_putc(utfbuf, sizeof utfbuf, c);
+            for (i = 0; i < utflen; i++) {
+                /*
+                 * We don't need to worry about setting orflags correctly
+                 * because if utflen==1 its value will be correct anyway
+                 * otherwise each character will be > 0x7f and so the
+                 * character will never be escaped on first and last.
+                 */
+                len =
+                    do_esc_char(utfbuf[i], (unsigned char)(flags | orflags),
+                                quotes, io_ch, arg);
+                if (len < 0)
+                    return -1;
+                outlen += len;
+            }
+        } else {
+            len =
+                do_esc_char(c, (unsigned char)(flags | orflags), quotes,
+                            io_ch, arg);
+            if (len < 0)
+                return -1;
+            outlen += len;
+        }
+    }
+    return outlen;
+}
+
+/* This function hex dumps a buffer of characters */
+
+static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf,
+                       int buflen)
+{
+    static const char hexdig[] = "0123456789ABCDEF";
+    unsigned char *p, *q;
+    char hextmp[2];
+    if (arg) {
+        p = buf;
+        q = buf + buflen;
+        while (p != q) {
+            hextmp[0] = hexdig[*p >> 4];
+            hextmp[1] = hexdig[*p & 0xf];
+            if (!io_ch(arg, hextmp, 2))
+                return -1;
+            p++;
+        }
+    }
+    return buflen << 1;
+}
+
+/*
+ * "dump" a string. This is done when the type is unknown, or the flags
+ * request it. We can either dump the content octets or the entire DER
+ * encoding. This uses the RFC2253 #01234 format.
+ */
+
+static int do_dump(unsigned long lflags, char_io *io_ch, void *arg,
+                   ASN1_STRING *str)
+{
+    /*
+     * Placing the ASN1_STRING in a temp ASN1_TYPE allows the DER encoding to
+     * readily obtained
+     */
+    ASN1_TYPE t;
+    unsigned char *der_buf, *p;
+    int outlen, der_len;
+
+    if (!io_ch(arg, "#", 1))
+        return -1;
+    /* If we don't dump DER encoding just dump content octets */
+    if (!(lflags & ASN1_STRFLGS_DUMP_DER)) {
+        outlen = do_hex_dump(io_ch, arg, str->data, str->length);
+        if (outlen < 0)
+            return -1;
+        return outlen + 1;
+    }
+    t.type = str->type;
+    t.value.ptr = (char *)str;
+    der_len = i2d_ASN1_TYPE(&t, NULL);
+    der_buf = OPENSSL_malloc(der_len);
+    if (!der_buf)
+        return -1;
+    p = der_buf;
+    i2d_ASN1_TYPE(&t, &p);
+    outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
+    OPENSSL_free(der_buf);
+    if (outlen < 0)
+        return -1;
+    return outlen + 1;
+}
+
+/*
+ * Lookup table to convert tags to character widths, 0 = UTF8 encoded, -1 is
+ * used for non string types otherwise it is the number of bytes per
+ * character
+ */
+
+static const signed char tag2nbyte[] = {
+    -1, -1, -1, -1, -1,         /* 0-4 */
+    -1, -1, -1, -1, -1,         /* 5-9 */
+    -1, -1, 0, -1,              /* 10-13 */
+    -1, -1, -1, -1,             /* 15-17 */
+    1, 1, 1,                    /* 18-20 */
+    -1, 1, 1, 1,                /* 21-24 */
+    -1, 1, -1,                  /* 25-27 */
+    4, -1, 2                    /* 28-30 */
+};
+
+/*
+ * This is the main function, print out an ASN1_STRING taking note of various
+ * escape and display options. Returns number of characters written or -1 if
+ * an error occurred.
+ */
+
+static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags,
+                       ASN1_STRING *str)
+{
+    int outlen, len;
+    int type;
+    char quotes;
+    unsigned char flags;
+    quotes = 0;
+    /* Keep a copy of escape flags */
+    flags = (unsigned char)(lflags & ESC_FLAGS);
+
+    type = str->type;
+
+    outlen = 0;
+
+    if (lflags & ASN1_STRFLGS_SHOW_TYPE) {
+        const char *tagname;
+        tagname = ASN1_tag2str(type);
+        outlen += strlen(tagname);
+        if (!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1))
+            return -1;
+        outlen++;
+    }
+
+    /* Decide what to do with type, either dump content or display it */
+
+    /* Dump everything */
+    if (lflags & ASN1_STRFLGS_DUMP_ALL)
+        type = -1;
+    /* Ignore the string type */
+    else if (lflags & ASN1_STRFLGS_IGNORE_TYPE)
+        type = 1;
+    else {
+        /* Else determine width based on type */
+        if ((type > 0) && (type < 31))
+            type = tag2nbyte[type];
+        else
+            type = -1;
+        if ((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN))
+            type = 1;
+    }
+
+    if (type == -1) {
+        len = do_dump(lflags, io_ch, arg, str);
+        if (len < 0)
+            return -1;
+        outlen += len;
+        return outlen;
+    }
+
+    if (lflags & ASN1_STRFLGS_UTF8_CONVERT) {
+        /*
+         * Note: if string is UTF8 and we want to convert to UTF8 then we
+         * just interpret it as 1 byte per character to avoid converting
+         * twice.
+         */
+        if (!type)
+            type = 1;
+        else
+            type |= BUF_TYPE_CONVUTF8;
+    }
+
+    len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
+    if (len < 0)
+        return -1;
+    outlen += len;
+    if (quotes)
+        outlen += 2;
+    if (!arg)
+        return outlen;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    if (do_buf(str->data, str->length, type, flags, NULL, io_ch, arg) < 0)
+        return -1;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    return outlen;
+}
+
+/* Used for line indenting: print 'indent' spaces */
+
+static int do_indent(char_io *io_ch, void *arg, int indent)
+{
+    int i;
+    for (i = 0; i < indent; i++)
+        if (!io_ch(arg, " ", 1))
+            return 0;
+    return 1;
+}
+
+#define FN_WIDTH_LN     25
+#define FN_WIDTH_SN     10
+
+static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n,
+                      int indent, unsigned long flags)
+{
+    int i, prev = -1, orflags, cnt;
+    int fn_opt, fn_nid;
+    ASN1_OBJECT *fn;
+    ASN1_STRING *val;
+    X509_NAME_ENTRY *ent;
+    char objtmp[80];
+    const char *objbuf;
+    int outlen, len;
+    const char *sep_dn, *sep_mv, *sep_eq;
+    int sep_dn_len, sep_mv_len, sep_eq_len;
+    if (indent < 0)
+        indent = 0;
+    outlen = indent;
+    if (!do_indent(io_ch, arg, indent))
+        return -1;
+    switch (flags & XN_FLAG_SEP_MASK) {
+    case XN_FLAG_SEP_MULTILINE:
+        sep_dn = "\n";
+        sep_dn_len = 1;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        break;
+
+    case XN_FLAG_SEP_COMMA_PLUS:
+        sep_dn = ",";
+        sep_dn_len = 1;
+        sep_mv = "+";
+        sep_mv_len = 1;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_CPLUS_SPC:
+        sep_dn = ", ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_SPLUS_SPC:
+        sep_dn = "; ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    default:
+        return -1;
+    }
+
+    if (flags & XN_FLAG_SPC_EQ) {
+        sep_eq = " = ";
+        sep_eq_len = 3;
+    } else {
+        sep_eq = "=";
+        sep_eq_len = 1;
+    }
+
+    fn_opt = flags & XN_FLAG_FN_MASK;
+
+    cnt = X509_NAME_entry_count(n);
+    for (i = 0; i < cnt; i++) {
+        if (flags & XN_FLAG_DN_REV)
+            ent = X509_NAME_get_entry(n, cnt - i - 1);
+        else
+            ent = X509_NAME_get_entry(n, i);
+        if (prev != -1) {
+            if (prev == ent->set) {
+                if (!io_ch(arg, sep_mv, sep_mv_len))
+                    return -1;
+                outlen += sep_mv_len;
+            } else {
+                if (!io_ch(arg, sep_dn, sep_dn_len))
+                    return -1;
+                outlen += sep_dn_len;
+                if (!do_indent(io_ch, arg, indent))
+                    return -1;
+                outlen += indent;
+            }
+        }
+        prev = ent->set;
+        fn = X509_NAME_ENTRY_get_object(ent);
+        val = X509_NAME_ENTRY_get_data(ent);
+        fn_nid = OBJ_obj2nid(fn);
+        if (fn_opt != XN_FLAG_FN_NONE) {
+            int objlen, fld_len;
+            if ((fn_opt == XN_FLAG_FN_OID) || (fn_nid == NID_undef)) {
+                OBJ_obj2txt(objtmp, sizeof objtmp, fn, 1);
+                fld_len = 0;    /* XXX: what should this be? */
+                objbuf = objtmp;
+            } else {
+                if (fn_opt == XN_FLAG_FN_SN) {
+                    fld_len = FN_WIDTH_SN;
+                    objbuf = OBJ_nid2sn(fn_nid);
+                } else if (fn_opt == XN_FLAG_FN_LN) {
+                    fld_len = FN_WIDTH_LN;
+                    objbuf = OBJ_nid2ln(fn_nid);
+                } else {
+                    fld_len = 0; /* XXX: what should this be? */
+                    objbuf = "";
+                }
+            }
+            objlen = strlen(objbuf);
+            if (!io_ch(arg, objbuf, objlen))
+                return -1;
+            if ((objlen < fld_len) && (flags & XN_FLAG_FN_ALIGN)) {
+                if (!do_indent(io_ch, arg, fld_len - objlen))
+                    return -1;
+                outlen += fld_len - objlen;
+            }
+            if (!io_ch(arg, sep_eq, sep_eq_len))
+                return -1;
+            outlen += objlen + sep_eq_len;
+        }
+        /*
+         * If the field name is unknown then fix up the DER dump flag. We
+         * might want to limit this further so it will DER dump on anything
+         * other than a few 'standard' fields.
+         */
+        if ((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
+            orflags = ASN1_STRFLGS_DUMP_ALL;
+        else
+            orflags = 0;
+
+        len = do_print_ex(io_ch, arg, flags | orflags, val);
+        if (len < 0)
+            return -1;
+        outlen += len;
+    }
+    return outlen;
+}
+
+/* Wrappers round the main functions */
+
+int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent,
+                       unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT)
+        return X509_NAME_print(out, nm, indent);
+    return do_name_ex(send_bio_chars, out, nm, indent, flags);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent,
+                          unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT) {
+        BIO *btmp;
+        int ret;
+        btmp = BIO_new_fp(fp, BIO_NOCLOSE);
+        if (!btmp)
+            return -1;
+        ret = X509_NAME_print(btmp, nm, indent);
+        BIO_free(btmp);
+        return ret;
+    }
+    return do_name_ex(send_fp_chars, fp, nm, indent, flags);
+}
+#endif
+
+int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_bio_chars, out, flags, str);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_fp_chars, fp, flags, str);
+}
+#endif
+
+/*
+ * Utility function: convert any string type to UTF8, returns number of bytes
+ * in output string or a negative error code
+ */
+
+int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
+{
+    ASN1_STRING stmp, *str = &stmp;
+    int mbflag, type, ret;
+    if (!in)
+        return -1;
+    type = in->type;
+    if ((type < 0) || (type > 30))
+        return -1;
+    mbflag = tag2nbyte[type];
+    if (mbflag == -1)
+        return -1;
+    mbflag |= MBSTRING_FLAG;
+    stmp.data = NULL;
+    stmp.length = 0;
+    stmp.flags = 0;
+    ret =
+        ASN1_mbstring_copy(&str, in->data, in->length, mbflag,
+                           B_ASN1_UTF8STRING);
+    if (ret < 0)
+        return ret;
+    *out = stmp.data;
+    return stmp.length;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c
new file mode 100644
index 0000000..f8e7a99
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c	
@@ -0,0 +1,114 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <stdio.h>
+#include <time.h>
+#include <sys/types.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+
+#include "internal.h"
+
+int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a,
+                     ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey)
+{
+    EVP_MD_CTX ctx;
+    uint8_t *buf_in = NULL;
+    int ret = 0, inl = 0;
+
+    if (!pkey) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+
+    if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_BIT_STRING_BITS_LEFT);
+        return 0;
+    }
+
+    EVP_MD_CTX_init(&ctx);
+
+    if (!x509_digest_verify_init(&ctx, a, pkey)) {
+        goto err;
+    }
+
+    inl = ASN1_item_i2d(asn, &buf_in, it);
+
+    if (buf_in == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (!EVP_DigestVerify(&ctx, signature->data, (size_t)signature->length,
+                          buf_in, inl)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_EVP_LIB);
+        goto err;
+    }
+
+    ret = 1;
+
+err:
+    OPENSSL_free(buf_in);
+    EVP_MD_CTX_cleanup(&ctx);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c.grpc_back
new file mode 100644
index 0000000..8587b59
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/a_verify.c.grpc_back	
@@ -0,0 +1,114 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <stdio.h>
+#include <time.h>
+#include <sys/types.h>
+
+#include <openssl/bn.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+
+#include "internal.h"
+
+int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a,
+                     ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey)
+{
+    EVP_MD_CTX ctx;
+    uint8_t *buf_in = NULL;
+    int ret = 0, inl = 0;
+
+    if (!pkey) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+
+    if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_BIT_STRING_BITS_LEFT);
+        return 0;
+    }
+
+    EVP_MD_CTX_init(&ctx);
+
+    if (!x509_digest_verify_init(&ctx, a, pkey)) {
+        goto err;
+    }
+
+    inl = ASN1_item_i2d(asn, &buf_in, it);
+
+    if (buf_in == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (!EVP_DigestVerify(&ctx, signature->data, (size_t)signature->length,
+                          buf_in, inl)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_EVP_LIB);
+        goto err;
+    }
+
+    ret = 1;
+
+err:
+    OPENSSL_free(buf_in);
+    EVP_MD_CTX_cleanup(&ctx);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c
new file mode 100644
index 0000000..aadcafb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c	
@@ -0,0 +1,153 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+
+#include "internal.h"
+
+
+int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
+  EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
+    int pad_mode;
+    if (!EVP_PKEY_CTX_get_rsa_padding(ctx->pctx, &pad_mode)) {
+      return 0;
+    }
+    /* RSA-PSS has special signature algorithm logic. */
+    if (pad_mode == RSA_PKCS1_PSS_PADDING) {
+      return x509_rsa_ctx_to_pss(ctx, algor);
+    }
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519) {
+    return X509_ALGOR_set0(algor, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
+  }
+
+  /* Default behavior: look up the OID for the algorithm/hash pair and encode
+   * that. */
+  const EVP_MD *digest = EVP_MD_CTX_md(ctx);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  int sign_nid;
+  if (!OBJ_find_sigid_by_algs(&sign_nid, EVP_MD_type(digest),
+                              EVP_PKEY_id(pkey))) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+    return 0;
+  }
+
+  /* RSA signature algorithms include an explicit NULL parameter. Others omit
+   * it. */
+  int paramtype =
+      (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) ? V_ASN1_NULL : V_ASN1_UNDEF;
+  X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL);
+  return 1;
+}
+
+int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
+                            EVP_PKEY *pkey) {
+  /* Convert the signature OID into digest and public key OIDs. */
+  int sigalg_nid = OBJ_obj2nid(sigalg->algorithm);
+  int digest_nid, pkey_nid;
+  if (!OBJ_find_sigid_algs(sigalg_nid, &digest_nid, &pkey_nid)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  /* Check the public key OID matches the public key type. */
+  if (pkey_nid != EVP_PKEY_id(pkey)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  /* NID_undef signals that there are custom parameters to set. */
+  if (digest_nid == NID_undef) {
+    if (sigalg_nid == NID_rsassaPss) {
+      return x509_rsa_pss_to_ctx(ctx, sigalg, pkey);
+    }
+    if (sigalg_nid == NID_ED25519) {
+      if (sigalg->parameter != NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER);
+        return 0;
+      }
+      return EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey);
+    }
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  /* Otherwise, initialize with the digest from the OID. */
+  const EVP_MD *digest = EVP_get_digestbynid(digest_nid);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
+    return 0;
+  }
+
+  return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c.grpc_back
new file mode 100644
index 0000000..8f53fff
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/algorithm.c.grpc_back	
@@ -0,0 +1,153 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <openssl/asn1.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+
+#include "internal.h"
+
+
+int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
+  EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
+    int pad_mode;
+    if (!EVP_PKEY_CTX_get_rsa_padding(ctx->pctx, &pad_mode)) {
+      return 0;
+    }
+    /* RSA-PSS has special signature algorithm logic. */
+    if (pad_mode == RSA_PKCS1_PSS_PADDING) {
+      return x509_rsa_ctx_to_pss(ctx, algor);
+    }
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519) {
+    return X509_ALGOR_set0(algor, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
+  }
+
+  /* Default behavior: look up the OID for the algorithm/hash pair and encode
+   * that. */
+  const EVP_MD *digest = EVP_MD_CTX_md(ctx);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  int sign_nid;
+  if (!OBJ_find_sigid_by_algs(&sign_nid, EVP_MD_type(digest),
+                              EVP_PKEY_id(pkey))) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+    return 0;
+  }
+
+  /* RSA signature algorithms include an explicit NULL parameter. Others omit
+   * it. */
+  int paramtype =
+      (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) ? V_ASN1_NULL : V_ASN1_UNDEF;
+  X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL);
+  return 1;
+}
+
+int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
+                            EVP_PKEY *pkey) {
+  /* Convert the signature OID into digest and public key OIDs. */
+  int sigalg_nid = OBJ_obj2nid(sigalg->algorithm);
+  int digest_nid, pkey_nid;
+  if (!OBJ_find_sigid_algs(sigalg_nid, &digest_nid, &pkey_nid)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  /* Check the public key OID matches the public key type. */
+  if (pkey_nid != EVP_PKEY_id(pkey)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  /* NID_undef signals that there are custom parameters to set. */
+  if (digest_nid == NID_undef) {
+    if (sigalg_nid == NID_rsassaPss) {
+      return x509_rsa_pss_to_ctx(ctx, sigalg, pkey);
+    }
+    if (sigalg_nid == NID_ED25519) {
+      if (sigalg->parameter != NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER);
+        return 0;
+      }
+      return EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey);
+    }
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  /* Otherwise, initialize with the digest from the OID. */
+  const EVP_MD *digest = EVP_get_digestbynid(digest_nid);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
+    return 0;
+  }
+
+  return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c
new file mode 100644
index 0000000..62b1a8e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c	
@@ -0,0 +1,842 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+#include "../x509v3/internal.h"
+
+/*
+ * Although this file is in crypto/x509 for layering purposes, it emits
+ * errors from the ASN.1 module for OpenSSL compatibility.
+ */
+
+#define ASN1_GEN_FLAG           0x10000
+#define ASN1_GEN_FLAG_IMP       (ASN1_GEN_FLAG|1)
+#define ASN1_GEN_FLAG_EXP       (ASN1_GEN_FLAG|2)
+#define ASN1_GEN_FLAG_TAG       (ASN1_GEN_FLAG|3)
+#define ASN1_GEN_FLAG_BITWRAP   (ASN1_GEN_FLAG|4)
+#define ASN1_GEN_FLAG_OCTWRAP   (ASN1_GEN_FLAG|5)
+#define ASN1_GEN_FLAG_SEQWRAP   (ASN1_GEN_FLAG|6)
+#define ASN1_GEN_FLAG_SETWRAP   (ASN1_GEN_FLAG|7)
+#define ASN1_GEN_FLAG_FORMAT    (ASN1_GEN_FLAG|8)
+
+#define ASN1_GEN_STR(str,val)   {str, sizeof(str) - 1, val}
+
+#define ASN1_FLAG_EXP_MAX       20
+/* Maximum number of nested sequences */
+#define ASN1_GEN_SEQ_MAX_DEPTH  50
+
+/* Input formats */
+
+/* ASCII: default */
+#define ASN1_GEN_FORMAT_ASCII   1
+/* UTF8 */
+#define ASN1_GEN_FORMAT_UTF8    2
+/* Hex */
+#define ASN1_GEN_FORMAT_HEX     3
+/* List of bits */
+#define ASN1_GEN_FORMAT_BITLIST 4
+
+struct tag_name_st {
+    const char *strnam;
+    int len;
+    int tag;
+};
+
+typedef struct {
+    int exp_tag;
+    int exp_class;
+    int exp_constructed;
+    int exp_pad;
+    long exp_len;
+} tag_exp_type;
+
+typedef struct {
+    int imp_tag;
+    int imp_class;
+    int utype;
+    int format;
+    const char *str;
+    tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
+    int exp_count;
+} tag_exp_arg;
+
+static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth,
+                              int *perr);
+static int bitstr_cb(const char *elem, int len, void *bitstr);
+static int asn1_cb(const char *elem, int len, void *bitstr);
+static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
+                      int exp_constructed, int exp_pad, int imp_ok);
+static int parse_tagging(const char *vstart, int vlen, int *ptag,
+                         int *pclass);
+static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
+                             int depth, int *perr);
+static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
+static int asn1_str2tag(const char *tagstr, int len);
+
+ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)
+{
+    X509V3_CTX cnf;
+
+    if (!nconf)
+        return ASN1_generate_v3(str, NULL);
+
+    X509V3_set_nconf(&cnf, nconf);
+    return ASN1_generate_v3(str, &cnf);
+}
+
+ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)
+{
+    int err = 0;
+    ASN1_TYPE *ret = generate_v3(str, cnf, 0, &err);
+    if (err)
+        OPENSSL_PUT_ERROR(ASN1, err);
+    return ret;
+}
+
+static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth,
+                              int *perr)
+{
+    ASN1_TYPE *ret;
+    tag_exp_arg asn1_tags;
+    tag_exp_type *etmp;
+
+    int i, len;
+
+    unsigned char *orig_der = NULL, *new_der = NULL;
+    const unsigned char *cpy_start;
+    unsigned char *p;
+    const unsigned char *cp;
+    int cpy_len;
+    long hdr_len = 0;
+    int hdr_constructed = 0, hdr_tag, hdr_class;
+    int r;
+
+    asn1_tags.imp_tag = -1;
+    asn1_tags.imp_class = -1;
+    asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
+    asn1_tags.exp_count = 0;
+    if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) {
+        *perr = ASN1_R_UNKNOWN_TAG;
+        return NULL;
+    }
+
+    if ((asn1_tags.utype == V_ASN1_SEQUENCE)
+        || (asn1_tags.utype == V_ASN1_SET)) {
+        if (!cnf) {
+            *perr = ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG;
+            return NULL;
+        }
+        if (depth >= ASN1_GEN_SEQ_MAX_DEPTH) {
+            *perr = ASN1_R_ILLEGAL_NESTED_TAGGING;
+            return NULL;
+        }
+        ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf, depth, perr);
+    } else
+        ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
+
+    if (!ret)
+        return NULL;
+
+    /* If no tagging return base type */
+    if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
+        return ret;
+
+    /* Generate the encoding */
+    cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
+    ASN1_TYPE_free(ret);
+    ret = NULL;
+    /* Set point to start copying for modified encoding */
+    cpy_start = orig_der;
+
+    /* Do we need IMPLICIT tagging? */
+    if (asn1_tags.imp_tag != -1) {
+        /* If IMPLICIT we will replace the underlying tag */
+        /* Skip existing tag+len */
+        r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class,
+                            cpy_len);
+        if (r & 0x80)
+            goto err;
+        /* Update copy length */
+        cpy_len -= cpy_start - orig_der;
+        /*
+         * For IMPLICIT tagging the length should match the original length
+         * and constructed flag should be consistent.
+         */
+        if (r & 0x1) {
+            /* Indefinite length constructed */
+            hdr_constructed = 2;
+            hdr_len = 0;
+        } else
+            /* Just retain constructed flag */
+            hdr_constructed = r & V_ASN1_CONSTRUCTED;
+        /*
+         * Work out new length with IMPLICIT tag: ignore constructed because
+         * it will mess up if indefinite length
+         */
+        len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
+    } else
+        len = cpy_len;
+
+    /* Work out length in any EXPLICIT, starting from end */
+
+    for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1;
+         i < asn1_tags.exp_count; i++, etmp--) {
+        /* Content length: number of content octets + any padding */
+        len += etmp->exp_pad;
+        etmp->exp_len = len;
+        /* Total object length: length including new header */
+        len = ASN1_object_size(0, len, etmp->exp_tag);
+    }
+
+    /* Allocate buffer for new encoding */
+
+    new_der = OPENSSL_malloc(len);
+    if (!new_der)
+        goto err;
+
+    /* Generate tagged encoding */
+
+    p = new_der;
+
+    /* Output explicit tags first */
+
+    for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count;
+         i++, etmp++) {
+        ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
+                        etmp->exp_tag, etmp->exp_class);
+        if (etmp->exp_pad)
+            *p++ = 0;
+    }
+
+    /* If IMPLICIT, output tag */
+
+    if (asn1_tags.imp_tag != -1) {
+        if (asn1_tags.imp_class == V_ASN1_UNIVERSAL
+            && (asn1_tags.imp_tag == V_ASN1_SEQUENCE
+                || asn1_tags.imp_tag == V_ASN1_SET))
+            hdr_constructed = V_ASN1_CONSTRUCTED;
+        ASN1_put_object(&p, hdr_constructed, hdr_len,
+                        asn1_tags.imp_tag, asn1_tags.imp_class);
+    }
+
+    /* Copy across original encoding */
+    OPENSSL_memcpy(p, cpy_start, cpy_len);
+
+    cp = new_der;
+
+    /* Obtain new ASN1_TYPE structure */
+    ret = d2i_ASN1_TYPE(NULL, &cp, len);
+
+ err:
+    if (orig_der)
+        OPENSSL_free(orig_der);
+    if (new_der)
+        OPENSSL_free(new_der);
+
+    return ret;
+
+}
+
+static int asn1_cb(const char *elem, int len, void *bitstr)
+{
+    tag_exp_arg *arg = bitstr;
+    int i;
+    int utype;
+    int vlen = 0;
+    const char *p, *vstart = NULL;
+
+    int tmp_tag, tmp_class;
+
+    if (elem == NULL)
+        return -1;
+
+    for (i = 0, p = elem; i < len; p++, i++) {
+        /* Look for the ':' in name value pairs */
+        if (*p == ':') {
+            vstart = p + 1;
+            vlen = len - (vstart - elem);
+            len = p - elem;
+            break;
+        }
+    }
+
+    utype = asn1_str2tag(elem, len);
+
+    if (utype == -1) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_TAG);
+        ERR_add_error_data(2, "tag=", elem);
+        return -1;
+    }
+
+    /* If this is not a modifier mark end of string and exit */
+    if (!(utype & ASN1_GEN_FLAG)) {
+        arg->utype = utype;
+        arg->str = vstart;
+        /* If no value and not end of string, error */
+        if (!vstart && elem[len]) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_VALUE);
+            return -1;
+        }
+        return 0;
+    }
+
+    switch (utype) {
+
+    case ASN1_GEN_FLAG_IMP:
+        /* Check for illegal multiple IMPLICIT tagging */
+        if (arg->imp_tag != -1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NESTED_TAGGING);
+            return -1;
+        }
+        if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_EXP:
+
+        if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
+            return -1;
+        if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_SEQWRAP:
+        if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_SETWRAP:
+        if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_BITWRAP:
+        if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_OCTWRAP:
+        if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_FORMAT:
+        if (!vstart) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+            return -1;
+        }
+        if (!strncmp(vstart, "ASCII", 5))
+            arg->format = ASN1_GEN_FORMAT_ASCII;
+        else if (!strncmp(vstart, "UTF8", 4))
+            arg->format = ASN1_GEN_FORMAT_UTF8;
+        else if (!strncmp(vstart, "HEX", 3))
+            arg->format = ASN1_GEN_FORMAT_HEX;
+        else if (!strncmp(vstart, "BITLIST", 7))
+            arg->format = ASN1_GEN_FORMAT_BITLIST;
+        else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+            return -1;
+        }
+        break;
+
+    }
+
+    return 1;
+
+}
+
+static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
+{
+    char erch[2];
+    long tag_num;
+    char *eptr;
+    if (!vstart)
+        return 0;
+    tag_num = strtoul(vstart, &eptr, 10);
+    /* Check we haven't gone past max length: should be impossible */
+    if (eptr && *eptr && (eptr > vstart + vlen))
+        return 0;
+    if (tag_num < 0) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER);
+        return 0;
+    }
+    *ptag = tag_num;
+    /* If we have non numeric characters, parse them */
+    if (eptr)
+        vlen -= eptr - vstart;
+    else
+        vlen = 0;
+    if (vlen) {
+        switch (*eptr) {
+
+        case 'U':
+            *pclass = V_ASN1_UNIVERSAL;
+            break;
+
+        case 'A':
+            *pclass = V_ASN1_APPLICATION;
+            break;
+
+        case 'P':
+            *pclass = V_ASN1_PRIVATE;
+            break;
+
+        case 'C':
+            *pclass = V_ASN1_CONTEXT_SPECIFIC;
+            break;
+
+        default:
+            erch[0] = *eptr;
+            erch[1] = 0;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_MODIFIER);
+            ERR_add_error_data(2, "Char=", erch);
+            return 0;
+            break;
+
+        }
+    } else
+        *pclass = V_ASN1_CONTEXT_SPECIFIC;
+
+    return 1;
+
+}
+
+/* Handle multiple types: SET and SEQUENCE */
+
+static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
+                             int depth, int *perr)
+{
+    ASN1_TYPE *ret = NULL;
+    STACK_OF(ASN1_TYPE) *sk = NULL;
+    STACK_OF(CONF_VALUE) *sect = NULL;
+    unsigned char *der = NULL;
+    int derlen;
+    size_t i;
+    sk = sk_ASN1_TYPE_new_null();
+    if (!sk)
+        goto bad;
+    if (section) {
+        if (!cnf)
+            goto bad;
+        sect = X509V3_get_section(cnf, (char *)section);
+        if (!sect)
+            goto bad;
+        for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
+            ASN1_TYPE *typ =
+                generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf,
+                            depth + 1, perr);
+            if (!typ)
+                goto bad;
+            if (!sk_ASN1_TYPE_push(sk, typ))
+                goto bad;
+        }
+    }
+
+    /*
+     * Now we has a STACK of the components, convert to the correct form
+     */
+
+    if (utype == V_ASN1_SET)
+        derlen = i2d_ASN1_SET_ANY(sk, &der);
+    else
+        derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
+
+    if (derlen < 0)
+        goto bad;
+
+    if (!(ret = ASN1_TYPE_new()))
+        goto bad;
+
+    if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
+        goto bad;
+
+    ret->type = utype;
+
+    ret->value.asn1_string->data = der;
+    ret->value.asn1_string->length = derlen;
+
+    der = NULL;
+
+ bad:
+
+    if (der)
+        OPENSSL_free(der);
+
+    if (sk)
+        sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
+    if (sect)
+        X509V3_section_free(cnf, sect);
+
+    return ret;
+}
+
+static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
+                      int exp_constructed, int exp_pad, int imp_ok)
+{
+    tag_exp_type *exp_tmp;
+    /* Can only have IMPLICIT if permitted */
+    if ((arg->imp_tag != -1) && !imp_ok) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_IMPLICIT_TAG);
+        return 0;
+    }
+
+    if (arg->exp_count == ASN1_FLAG_EXP_MAX) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_DEPTH_EXCEEDED);
+        return 0;
+    }
+
+    exp_tmp = &arg->exp_list[arg->exp_count++];
+
+    /*
+     * If IMPLICIT set tag to implicit value then reset implicit tag since it
+     * has been used.
+     */
+    if (arg->imp_tag != -1) {
+        exp_tmp->exp_tag = arg->imp_tag;
+        exp_tmp->exp_class = arg->imp_class;
+        arg->imp_tag = -1;
+        arg->imp_class = -1;
+    } else {
+        exp_tmp->exp_tag = exp_tag;
+        exp_tmp->exp_class = exp_class;
+    }
+    exp_tmp->exp_constructed = exp_constructed;
+    exp_tmp->exp_pad = exp_pad;
+
+    return 1;
+}
+
+static int asn1_str2tag(const char *tagstr, int len)
+{
+    unsigned int i;
+    static const struct tag_name_st *tntmp, tnst[] = {
+        ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
+        ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
+        ASN1_GEN_STR("NULL", V_ASN1_NULL),
+        ASN1_GEN_STR("INT", V_ASN1_INTEGER),
+        ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
+        ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
+        ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
+        ASN1_GEN_STR("OID", V_ASN1_OBJECT),
+        ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
+        ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
+        ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
+        ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
+        ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
+        ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
+        ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
+        ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
+        ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
+        ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
+        ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
+        ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
+        ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
+        ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
+        ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
+        ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
+        ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
+        ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
+        ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
+        ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
+        ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
+        ASN1_GEN_STR("T61", V_ASN1_T61STRING),
+        ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
+        ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
+        ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
+        ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
+        ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
+        ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
+
+        /* Special cases */
+        ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
+        ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
+        ASN1_GEN_STR("SET", V_ASN1_SET),
+        /* type modifiers */
+        /* Explicit tag */
+        ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
+        ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
+        /* Implicit tag */
+        ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
+        ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
+        /* OCTET STRING wrapper */
+        ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
+        /* SEQUENCE wrapper */
+        ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
+        /* SET wrapper */
+        ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
+        /* BIT STRING wrapper */
+        ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
+        ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
+        ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
+    };
+
+    if (len == -1)
+        len = strlen(tagstr);
+
+    tntmp = tnst;
+    for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++) {
+        if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
+            return tntmp->tag;
+    }
+
+    return -1;
+}
+
+static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
+{
+    ASN1_TYPE *atmp = NULL;
+
+    CONF_VALUE vtmp;
+
+    unsigned char *rdata;
+    long rdlen;
+
+    int no_unused = 1;
+
+    if (!(atmp = ASN1_TYPE_new())) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (!str)
+        str = "";
+
+    switch (utype) {
+
+    case V_ASN1_NULL:
+        if (str && *str) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NULL_VALUE);
+            goto bad_form;
+        }
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        vtmp.name = NULL;
+        vtmp.section = NULL;
+        vtmp.value = (char *)str;
+        if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BOOLEAN);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_INTEGER);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_OBJECT:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.object = OBJ_txt2obj(str, 0))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TIME_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+        if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+        atmp->value.asn1_string->type = utype;
+        if (!ASN1_TIME_check(atmp->value.asn1_string)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TIME_VALUE);
+            goto bad_str;
+        }
+
+        break;
+
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_NUMERICSTRING:
+
+        if (format == ASN1_GEN_FORMAT_ASCII)
+            format = MBSTRING_ASC;
+        else if (format == ASN1_GEN_FORMAT_UTF8)
+            format = MBSTRING_UTF8;
+        else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_FORMAT);
+            goto bad_form;
+        }
+
+        if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
+                               -1, format, ASN1_tag2bit(utype)) <= 0) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+
+        break;
+
+    case V_ASN1_BIT_STRING:
+
+    case V_ASN1_OCTET_STRING:
+
+        if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_form;
+        }
+
+        if (format == ASN1_GEN_FORMAT_HEX) {
+
+            if (!(rdata = x509v3_hex_to_bytes((char *)str, &rdlen))) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_HEX);
+                goto bad_str;
+            }
+
+            atmp->value.asn1_string->data = rdata;
+            atmp->value.asn1_string->length = rdlen;
+            atmp->value.asn1_string->type = utype;
+
+        } else if (format == ASN1_GEN_FORMAT_ASCII)
+            ASN1_STRING_set(atmp->value.asn1_string, str, -1);
+        else if ((format == ASN1_GEN_FORMAT_BITLIST)
+                 && (utype == V_ASN1_BIT_STRING)) {
+            if (!CONF_parse_list
+                (str, ',', 1, bitstr_cb, atmp->value.bit_string)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_LIST_ERROR);
+                goto bad_str;
+            }
+            no_unused = 0;
+
+        } else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
+            goto bad_form;
+        }
+
+        if ((utype == V_ASN1_BIT_STRING) && no_unused) {
+            atmp->value.asn1_string->flags
+                &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+            atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+        }
+
+        break;
+
+    default:
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_TYPE);
+        goto bad_str;
+        break;
+    }
+
+    atmp->type = utype;
+    return atmp;
+
+ bad_str:
+    ERR_add_error_data(2, "string=", str);
+ bad_form:
+
+    ASN1_TYPE_free(atmp);
+    return NULL;
+
+}
+
+static int bitstr_cb(const char *elem, int len, void *bitstr)
+{
+    long bitnum;
+    char *eptr;
+    if (!elem)
+        return 0;
+    bitnum = strtoul(elem, &eptr, 10);
+    if (eptr && *eptr && (eptr != elem + len))
+        return 0;
+    if (bitnum < 0) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER);
+        return 0;
+    }
+    if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c.grpc_back
new file mode 100644
index 0000000..98a6fac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/asn1_gen.c.grpc_back	
@@ -0,0 +1,842 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+#include "../x509v3/internal.h"
+
+/*
+ * Although this file is in crypto/x509 for layering purposes, it emits
+ * errors from the ASN.1 module for OpenSSL compatibility.
+ */
+
+#define ASN1_GEN_FLAG           0x10000
+#define ASN1_GEN_FLAG_IMP       (ASN1_GEN_FLAG|1)
+#define ASN1_GEN_FLAG_EXP       (ASN1_GEN_FLAG|2)
+#define ASN1_GEN_FLAG_TAG       (ASN1_GEN_FLAG|3)
+#define ASN1_GEN_FLAG_BITWRAP   (ASN1_GEN_FLAG|4)
+#define ASN1_GEN_FLAG_OCTWRAP   (ASN1_GEN_FLAG|5)
+#define ASN1_GEN_FLAG_SEQWRAP   (ASN1_GEN_FLAG|6)
+#define ASN1_GEN_FLAG_SETWRAP   (ASN1_GEN_FLAG|7)
+#define ASN1_GEN_FLAG_FORMAT    (ASN1_GEN_FLAG|8)
+
+#define ASN1_GEN_STR(str,val)   {str, sizeof(str) - 1, val}
+
+#define ASN1_FLAG_EXP_MAX       20
+/* Maximum number of nested sequences */
+#define ASN1_GEN_SEQ_MAX_DEPTH  50
+
+/* Input formats */
+
+/* ASCII: default */
+#define ASN1_GEN_FORMAT_ASCII   1
+/* UTF8 */
+#define ASN1_GEN_FORMAT_UTF8    2
+/* Hex */
+#define ASN1_GEN_FORMAT_HEX     3
+/* List of bits */
+#define ASN1_GEN_FORMAT_BITLIST 4
+
+struct tag_name_st {
+    const char *strnam;
+    int len;
+    int tag;
+};
+
+typedef struct {
+    int exp_tag;
+    int exp_class;
+    int exp_constructed;
+    int exp_pad;
+    long exp_len;
+} tag_exp_type;
+
+typedef struct {
+    int imp_tag;
+    int imp_class;
+    int utype;
+    int format;
+    const char *str;
+    tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
+    int exp_count;
+} tag_exp_arg;
+
+static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth,
+                              int *perr);
+static int bitstr_cb(const char *elem, int len, void *bitstr);
+static int asn1_cb(const char *elem, int len, void *bitstr);
+static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
+                      int exp_constructed, int exp_pad, int imp_ok);
+static int parse_tagging(const char *vstart, int vlen, int *ptag,
+                         int *pclass);
+static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
+                             int depth, int *perr);
+static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
+static int asn1_str2tag(const char *tagstr, int len);
+
+ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)
+{
+    X509V3_CTX cnf;
+
+    if (!nconf)
+        return ASN1_generate_v3(str, NULL);
+
+    X509V3_set_nconf(&cnf, nconf);
+    return ASN1_generate_v3(str, &cnf);
+}
+
+ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)
+{
+    int err = 0;
+    ASN1_TYPE *ret = generate_v3(str, cnf, 0, &err);
+    if (err)
+        OPENSSL_PUT_ERROR(ASN1, err);
+    return ret;
+}
+
+static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth,
+                              int *perr)
+{
+    ASN1_TYPE *ret;
+    tag_exp_arg asn1_tags;
+    tag_exp_type *etmp;
+
+    int i, len;
+
+    unsigned char *orig_der = NULL, *new_der = NULL;
+    const unsigned char *cpy_start;
+    unsigned char *p;
+    const unsigned char *cp;
+    int cpy_len;
+    long hdr_len = 0;
+    int hdr_constructed = 0, hdr_tag, hdr_class;
+    int r;
+
+    asn1_tags.imp_tag = -1;
+    asn1_tags.imp_class = -1;
+    asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
+    asn1_tags.exp_count = 0;
+    if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) {
+        *perr = ASN1_R_UNKNOWN_TAG;
+        return NULL;
+    }
+
+    if ((asn1_tags.utype == V_ASN1_SEQUENCE)
+        || (asn1_tags.utype == V_ASN1_SET)) {
+        if (!cnf) {
+            *perr = ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG;
+            return NULL;
+        }
+        if (depth >= ASN1_GEN_SEQ_MAX_DEPTH) {
+            *perr = ASN1_R_ILLEGAL_NESTED_TAGGING;
+            return NULL;
+        }
+        ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf, depth, perr);
+    } else
+        ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
+
+    if (!ret)
+        return NULL;
+
+    /* If no tagging return base type */
+    if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
+        return ret;
+
+    /* Generate the encoding */
+    cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
+    ASN1_TYPE_free(ret);
+    ret = NULL;
+    /* Set point to start copying for modified encoding */
+    cpy_start = orig_der;
+
+    /* Do we need IMPLICIT tagging? */
+    if (asn1_tags.imp_tag != -1) {
+        /* If IMPLICIT we will replace the underlying tag */
+        /* Skip existing tag+len */
+        r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class,
+                            cpy_len);
+        if (r & 0x80)
+            goto err;
+        /* Update copy length */
+        cpy_len -= cpy_start - orig_der;
+        /*
+         * For IMPLICIT tagging the length should match the original length
+         * and constructed flag should be consistent.
+         */
+        if (r & 0x1) {
+            /* Indefinite length constructed */
+            hdr_constructed = 2;
+            hdr_len = 0;
+        } else
+            /* Just retain constructed flag */
+            hdr_constructed = r & V_ASN1_CONSTRUCTED;
+        /*
+         * Work out new length with IMPLICIT tag: ignore constructed because
+         * it will mess up if indefinite length
+         */
+        len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
+    } else
+        len = cpy_len;
+
+    /* Work out length in any EXPLICIT, starting from end */
+
+    for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1;
+         i < asn1_tags.exp_count; i++, etmp--) {
+        /* Content length: number of content octets + any padding */
+        len += etmp->exp_pad;
+        etmp->exp_len = len;
+        /* Total object length: length including new header */
+        len = ASN1_object_size(0, len, etmp->exp_tag);
+    }
+
+    /* Allocate buffer for new encoding */
+
+    new_der = OPENSSL_malloc(len);
+    if (!new_der)
+        goto err;
+
+    /* Generate tagged encoding */
+
+    p = new_der;
+
+    /* Output explicit tags first */
+
+    for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count;
+         i++, etmp++) {
+        ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
+                        etmp->exp_tag, etmp->exp_class);
+        if (etmp->exp_pad)
+            *p++ = 0;
+    }
+
+    /* If IMPLICIT, output tag */
+
+    if (asn1_tags.imp_tag != -1) {
+        if (asn1_tags.imp_class == V_ASN1_UNIVERSAL
+            && (asn1_tags.imp_tag == V_ASN1_SEQUENCE
+                || asn1_tags.imp_tag == V_ASN1_SET))
+            hdr_constructed = V_ASN1_CONSTRUCTED;
+        ASN1_put_object(&p, hdr_constructed, hdr_len,
+                        asn1_tags.imp_tag, asn1_tags.imp_class);
+    }
+
+    /* Copy across original encoding */
+    OPENSSL_memcpy(p, cpy_start, cpy_len);
+
+    cp = new_der;
+
+    /* Obtain new ASN1_TYPE structure */
+    ret = d2i_ASN1_TYPE(NULL, &cp, len);
+
+ err:
+    if (orig_der)
+        OPENSSL_free(orig_der);
+    if (new_der)
+        OPENSSL_free(new_der);
+
+    return ret;
+
+}
+
+static int asn1_cb(const char *elem, int len, void *bitstr)
+{
+    tag_exp_arg *arg = bitstr;
+    int i;
+    int utype;
+    int vlen = 0;
+    const char *p, *vstart = NULL;
+
+    int tmp_tag, tmp_class;
+
+    if (elem == NULL)
+        return -1;
+
+    for (i = 0, p = elem; i < len; p++, i++) {
+        /* Look for the ':' in name value pairs */
+        if (*p == ':') {
+            vstart = p + 1;
+            vlen = len - (vstart - elem);
+            len = p - elem;
+            break;
+        }
+    }
+
+    utype = asn1_str2tag(elem, len);
+
+    if (utype == -1) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_TAG);
+        ERR_add_error_data(2, "tag=", elem);
+        return -1;
+    }
+
+    /* If this is not a modifier mark end of string and exit */
+    if (!(utype & ASN1_GEN_FLAG)) {
+        arg->utype = utype;
+        arg->str = vstart;
+        /* If no value and not end of string, error */
+        if (!vstart && elem[len]) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_MISSING_VALUE);
+            return -1;
+        }
+        return 0;
+    }
+
+    switch (utype) {
+
+    case ASN1_GEN_FLAG_IMP:
+        /* Check for illegal multiple IMPLICIT tagging */
+        if (arg->imp_tag != -1) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NESTED_TAGGING);
+            return -1;
+        }
+        if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_EXP:
+
+        if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
+            return -1;
+        if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_SEQWRAP:
+        if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_SETWRAP:
+        if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_BITWRAP:
+        if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_OCTWRAP:
+        if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
+            return -1;
+        break;
+
+    case ASN1_GEN_FLAG_FORMAT:
+        if (!vstart) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+            return -1;
+        }
+        if (!strncmp(vstart, "ASCII", 5))
+            arg->format = ASN1_GEN_FORMAT_ASCII;
+        else if (!strncmp(vstart, "UTF8", 4))
+            arg->format = ASN1_GEN_FORMAT_UTF8;
+        else if (!strncmp(vstart, "HEX", 3))
+            arg->format = ASN1_GEN_FORMAT_HEX;
+        else if (!strncmp(vstart, "BITLIST", 7))
+            arg->format = ASN1_GEN_FORMAT_BITLIST;
+        else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_FORMAT);
+            return -1;
+        }
+        break;
+
+    }
+
+    return 1;
+
+}
+
+static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
+{
+    char erch[2];
+    long tag_num;
+    char *eptr;
+    if (!vstart)
+        return 0;
+    tag_num = strtoul(vstart, &eptr, 10);
+    /* Check we haven't gone past max length: should be impossible */
+    if (eptr && *eptr && (eptr > vstart + vlen))
+        return 0;
+    if (tag_num < 0) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER);
+        return 0;
+    }
+    *ptag = tag_num;
+    /* If we have non numeric characters, parse them */
+    if (eptr)
+        vlen -= eptr - vstart;
+    else
+        vlen = 0;
+    if (vlen) {
+        switch (*eptr) {
+
+        case 'U':
+            *pclass = V_ASN1_UNIVERSAL;
+            break;
+
+        case 'A':
+            *pclass = V_ASN1_APPLICATION;
+            break;
+
+        case 'P':
+            *pclass = V_ASN1_PRIVATE;
+            break;
+
+        case 'C':
+            *pclass = V_ASN1_CONTEXT_SPECIFIC;
+            break;
+
+        default:
+            erch[0] = *eptr;
+            erch[1] = 0;
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_MODIFIER);
+            ERR_add_error_data(2, "Char=", erch);
+            return 0;
+            break;
+
+        }
+    } else
+        *pclass = V_ASN1_CONTEXT_SPECIFIC;
+
+    return 1;
+
+}
+
+/* Handle multiple types: SET and SEQUENCE */
+
+static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
+                             int depth, int *perr)
+{
+    ASN1_TYPE *ret = NULL;
+    STACK_OF(ASN1_TYPE) *sk = NULL;
+    STACK_OF(CONF_VALUE) *sect = NULL;
+    unsigned char *der = NULL;
+    int derlen;
+    size_t i;
+    sk = sk_ASN1_TYPE_new_null();
+    if (!sk)
+        goto bad;
+    if (section) {
+        if (!cnf)
+            goto bad;
+        sect = X509V3_get_section(cnf, (char *)section);
+        if (!sect)
+            goto bad;
+        for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
+            ASN1_TYPE *typ =
+                generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf,
+                            depth + 1, perr);
+            if (!typ)
+                goto bad;
+            if (!sk_ASN1_TYPE_push(sk, typ))
+                goto bad;
+        }
+    }
+
+    /*
+     * Now we has a STACK of the components, convert to the correct form
+     */
+
+    if (utype == V_ASN1_SET)
+        derlen = i2d_ASN1_SET_ANY(sk, &der);
+    else
+        derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
+
+    if (derlen < 0)
+        goto bad;
+
+    if (!(ret = ASN1_TYPE_new()))
+        goto bad;
+
+    if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
+        goto bad;
+
+    ret->type = utype;
+
+    ret->value.asn1_string->data = der;
+    ret->value.asn1_string->length = derlen;
+
+    der = NULL;
+
+ bad:
+
+    if (der)
+        OPENSSL_free(der);
+
+    if (sk)
+        sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
+    if (sect)
+        X509V3_section_free(cnf, sect);
+
+    return ret;
+}
+
+static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
+                      int exp_constructed, int exp_pad, int imp_ok)
+{
+    tag_exp_type *exp_tmp;
+    /* Can only have IMPLICIT if permitted */
+    if ((arg->imp_tag != -1) && !imp_ok) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_IMPLICIT_TAG);
+        return 0;
+    }
+
+    if (arg->exp_count == ASN1_FLAG_EXP_MAX) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_DEPTH_EXCEEDED);
+        return 0;
+    }
+
+    exp_tmp = &arg->exp_list[arg->exp_count++];
+
+    /*
+     * If IMPLICIT set tag to implicit value then reset implicit tag since it
+     * has been used.
+     */
+    if (arg->imp_tag != -1) {
+        exp_tmp->exp_tag = arg->imp_tag;
+        exp_tmp->exp_class = arg->imp_class;
+        arg->imp_tag = -1;
+        arg->imp_class = -1;
+    } else {
+        exp_tmp->exp_tag = exp_tag;
+        exp_tmp->exp_class = exp_class;
+    }
+    exp_tmp->exp_constructed = exp_constructed;
+    exp_tmp->exp_pad = exp_pad;
+
+    return 1;
+}
+
+static int asn1_str2tag(const char *tagstr, int len)
+{
+    unsigned int i;
+    static const struct tag_name_st *tntmp, tnst[] = {
+        ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
+        ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
+        ASN1_GEN_STR("NULL", V_ASN1_NULL),
+        ASN1_GEN_STR("INT", V_ASN1_INTEGER),
+        ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
+        ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
+        ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
+        ASN1_GEN_STR("OID", V_ASN1_OBJECT),
+        ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
+        ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
+        ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
+        ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
+        ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
+        ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
+        ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
+        ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
+        ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
+        ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
+        ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
+        ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
+        ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
+        ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
+        ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
+        ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
+        ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
+        ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
+        ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
+        ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
+        ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
+        ASN1_GEN_STR("T61", V_ASN1_T61STRING),
+        ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
+        ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
+        ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
+        ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
+        ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
+        ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
+
+        /* Special cases */
+        ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
+        ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
+        ASN1_GEN_STR("SET", V_ASN1_SET),
+        /* type modifiers */
+        /* Explicit tag */
+        ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
+        ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
+        /* Implicit tag */
+        ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
+        ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
+        /* OCTET STRING wrapper */
+        ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
+        /* SEQUENCE wrapper */
+        ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
+        /* SET wrapper */
+        ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
+        /* BIT STRING wrapper */
+        ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
+        ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
+        ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
+    };
+
+    if (len == -1)
+        len = strlen(tagstr);
+
+    tntmp = tnst;
+    for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++) {
+        if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
+            return tntmp->tag;
+    }
+
+    return -1;
+}
+
+static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
+{
+    ASN1_TYPE *atmp = NULL;
+
+    CONF_VALUE vtmp;
+
+    unsigned char *rdata;
+    long rdlen;
+
+    int no_unused = 1;
+
+    if (!(atmp = ASN1_TYPE_new())) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (!str)
+        str = "";
+
+    switch (utype) {
+
+    case V_ASN1_NULL:
+        if (str && *str) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_NULL_VALUE);
+            goto bad_form;
+        }
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        vtmp.name = NULL;
+        vtmp.section = NULL;
+        vtmp.value = (char *)str;
+        if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BOOLEAN);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_ENUMERATED:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_INTEGER);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_OBJECT:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.object = OBJ_txt2obj(str, 0))) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT);
+            goto bad_str;
+        }
+        break;
+
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+        if (format != ASN1_GEN_FORMAT_ASCII) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_TIME_NOT_ASCII_FORMAT);
+            goto bad_form;
+        }
+        if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+        if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+        atmp->value.asn1_string->type = utype;
+        if (!ASN1_TIME_check(atmp->value.asn1_string)) {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TIME_VALUE);
+            goto bad_str;
+        }
+
+        break;
+
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_NUMERICSTRING:
+
+        if (format == ASN1_GEN_FORMAT_ASCII)
+            format = MBSTRING_ASC;
+        else if (format == ASN1_GEN_FORMAT_UTF8)
+            format = MBSTRING_UTF8;
+        else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_FORMAT);
+            goto bad_form;
+        }
+
+        if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
+                               -1, format, ASN1_tag2bit(utype)) <= 0) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_str;
+        }
+
+        break;
+
+    case V_ASN1_BIT_STRING:
+
+    case V_ASN1_OCTET_STRING:
+
+        if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
+            OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+            goto bad_form;
+        }
+
+        if (format == ASN1_GEN_FORMAT_HEX) {
+
+            if (!(rdata = x509v3_hex_to_bytes((char *)str, &rdlen))) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_HEX);
+                goto bad_str;
+            }
+
+            atmp->value.asn1_string->data = rdata;
+            atmp->value.asn1_string->length = rdlen;
+            atmp->value.asn1_string->type = utype;
+
+        } else if (format == ASN1_GEN_FORMAT_ASCII)
+            ASN1_STRING_set(atmp->value.asn1_string, str, -1);
+        else if ((format == ASN1_GEN_FORMAT_BITLIST)
+                 && (utype == V_ASN1_BIT_STRING)) {
+            if (!CONF_parse_list
+                (str, ',', 1, bitstr_cb, atmp->value.bit_string)) {
+                OPENSSL_PUT_ERROR(ASN1, ASN1_R_LIST_ERROR);
+                goto bad_str;
+            }
+            no_unused = 0;
+
+        } else {
+            OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
+            goto bad_form;
+        }
+
+        if ((utype == V_ASN1_BIT_STRING) && no_unused) {
+            atmp->value.asn1_string->flags
+                &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+            atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+        }
+
+        break;
+
+    default:
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_TYPE);
+        goto bad_str;
+        break;
+    }
+
+    atmp->type = utype;
+    return atmp;
+
+ bad_str:
+    ERR_add_error_data(2, "string=", str);
+ bad_form:
+
+    ASN1_TYPE_free(atmp);
+    return NULL;
+
+}
+
+static int bitstr_cb(const char *elem, int len, void *bitstr)
+{
+    long bitnum;
+    char *eptr;
+    if (!elem)
+        return 0;
+    bitnum = strtoul(elem, &eptr, 10);
+    if (eptr && *eptr && (eptr != elem + len))
+        return 0;
+    if (bitnum < 0) {
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_NUMBER);
+        return 0;
+    }
+    if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) {
+        OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c
new file mode 100644
index 0000000..d2c0437
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c	
@@ -0,0 +1,458 @@
+/* crypto/x509/by_dir.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include "../internal.h"
+
+typedef struct lookup_dir_hashes_st {
+    unsigned long hash;
+    int suffix;
+} BY_DIR_HASH;
+
+typedef struct lookup_dir_entry_st {
+    char *dir;
+    int dir_type;
+    STACK_OF(BY_DIR_HASH) *hashes;
+} BY_DIR_ENTRY;
+
+typedef struct lookup_dir_st {
+    BUF_MEM *buffer;
+    STACK_OF(BY_DIR_ENTRY) *dirs;
+} BY_DIR;
+
+DEFINE_STACK_OF(BY_DIR_HASH)
+DEFINE_STACK_OF(BY_DIR_ENTRY)
+
+static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
+                    char **ret);
+static int new_dir(X509_LOOKUP *lu);
+static void free_dir(X509_LOOKUP *lu);
+static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
+static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
+                               X509_OBJECT *ret);
+static X509_LOOKUP_METHOD x509_dir_lookup = {
+    "Load certs from files in a directory",
+    new_dir,                    /* new */
+    free_dir,                   /* free */
+    NULL,                       /* init */
+    NULL,                       /* shutdown */
+    dir_ctrl,                   /* ctrl */
+    get_cert_by_subject,        /* get_by_subject */
+    NULL,                       /* get_by_issuer_serial */
+    NULL,                       /* get_by_fingerprint */
+    NULL,                       /* get_by_alias */
+};
+
+X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
+{
+    return (&x509_dir_lookup);
+}
+
+static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
+                    char **retp)
+{
+    int ret = 0;
+    BY_DIR *ld;
+    char *dir = NULL;
+
+    ld = (BY_DIR *)ctx->method_data;
+
+    switch (cmd) {
+    case X509_L_ADD_DIR:
+        if (argl == X509_FILETYPE_DEFAULT) {
+            dir = (char *)getenv(X509_get_default_cert_dir_env());
+            if (dir)
+                ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
+            else
+                ret = add_cert_dir(ld, X509_get_default_cert_dir(),
+                                   X509_FILETYPE_PEM);
+            if (!ret) {
+                OPENSSL_PUT_ERROR(X509, X509_R_LOADING_CERT_DIR);
+            }
+        } else
+            ret = add_cert_dir(ld, argp, (int)argl);
+        break;
+    }
+    return (ret);
+}
+
+static int new_dir(X509_LOOKUP *lu)
+{
+    BY_DIR *a;
+
+    if ((a = (BY_DIR *)OPENSSL_malloc(sizeof(BY_DIR))) == NULL)
+        return (0);
+    if ((a->buffer = BUF_MEM_new()) == NULL) {
+        OPENSSL_free(a);
+        return (0);
+    }
+    a->dirs = NULL;
+    lu->method_data = (char *)a;
+    return (1);
+}
+
+static void by_dir_hash_free(BY_DIR_HASH *hash)
+{
+    OPENSSL_free(hash);
+}
+
+static int by_dir_hash_cmp(const BY_DIR_HASH **a, const BY_DIR_HASH **b)
+{
+    if ((*a)->hash > (*b)->hash)
+        return 1;
+    if ((*a)->hash < (*b)->hash)
+        return -1;
+    return 0;
+}
+
+static void by_dir_entry_free(BY_DIR_ENTRY *ent)
+{
+    if (ent->dir)
+        OPENSSL_free(ent->dir);
+    if (ent->hashes)
+        sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
+    OPENSSL_free(ent);
+}
+
+static void free_dir(X509_LOOKUP *lu)
+{
+    BY_DIR *a;
+
+    a = (BY_DIR *)lu->method_data;
+    if (a->dirs != NULL)
+        sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
+    if (a->buffer != NULL)
+        BUF_MEM_free(a->buffer);
+    OPENSSL_free(a);
+}
+
+static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
+{
+    size_t j, len;
+    const char *s, *ss, *p;
+
+    if (dir == NULL || !*dir) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_DIRECTORY);
+        return 0;
+    }
+
+    s = dir;
+    p = s;
+    do {
+        if ((*p == ':') || (*p == '\0')) {
+            BY_DIR_ENTRY *ent;
+            ss = s;
+            s = p + 1;
+            len = p - ss;
+            if (len == 0)
+                continue;
+            for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
+                ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
+                if (strlen(ent->dir) == len &&
+                    strncmp(ent->dir, ss, len) == 0)
+                    break;
+            }
+            if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
+                continue;
+            if (ctx->dirs == NULL) {
+                ctx->dirs = sk_BY_DIR_ENTRY_new_null();
+                if (!ctx->dirs) {
+                    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                    return 0;
+                }
+            }
+            ent = OPENSSL_malloc(sizeof(BY_DIR_ENTRY));
+            if (!ent)
+                return 0;
+            ent->dir_type = type;
+            ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
+            ent->dir = OPENSSL_malloc(len + 1);
+            if (!ent->dir || !ent->hashes) {
+                by_dir_entry_free(ent);
+                return 0;
+            }
+            OPENSSL_strlcpy(ent->dir, ss, len + 1);
+            if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
+                by_dir_entry_free(ent);
+                return 0;
+            }
+        }
+    } while (*p++ != '\0');
+    return 1;
+}
+
+/*
+ * g_ent_hashes_lock protects the |hashes| member of all |BY_DIR_ENTRY|
+ * objects.
+ */
+static struct CRYPTO_STATIC_MUTEX g_ent_hashes_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
+                               X509_OBJECT *ret)
+{
+    BY_DIR *ctx;
+    union {
+        struct {
+            X509 st_x509;
+            X509_CINF st_x509_cinf;
+        } x509;
+        struct {
+            X509_CRL st_crl;
+            X509_CRL_INFO st_crl_info;
+        } crl;
+    } data;
+    int ok = 0;
+    size_t i;
+    int j, k;
+    unsigned long h;
+    unsigned long hash_array[2];
+    int hash_index;
+    BUF_MEM *b = NULL;
+    X509_OBJECT stmp, *tmp;
+    const char *postfix = "";
+
+    if (name == NULL)
+        return (0);
+
+    stmp.type = type;
+    if (type == X509_LU_X509) {
+        data.x509.st_x509.cert_info = &data.x509.st_x509_cinf;
+        data.x509.st_x509_cinf.subject = name;
+        stmp.data.x509 = &data.x509.st_x509;
+        postfix = "";
+    } else if (type == X509_LU_CRL) {
+        data.crl.st_crl.crl = &data.crl.st_crl_info;
+        data.crl.st_crl_info.issuer = name;
+        stmp.data.crl = &data.crl.st_crl;
+        postfix = "r";
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_WRONG_LOOKUP_TYPE);
+        goto finish;
+    }
+
+    if ((b = BUF_MEM_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        goto finish;
+    }
+
+    ctx = (BY_DIR *)xl->method_data;
+
+    hash_array[0] = X509_NAME_hash(name);
+    hash_array[1] = X509_NAME_hash_old(name);
+    for (hash_index = 0; hash_index < 2; ++hash_index) {
+        h = hash_array[hash_index];
+        for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
+            BY_DIR_ENTRY *ent;
+            size_t idx;
+            BY_DIR_HASH htmp, *hent;
+            ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
+            j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
+            if (!BUF_MEM_grow(b, j)) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                goto finish;
+            }
+            if (type == X509_LU_CRL && ent->hashes) {
+                htmp.hash = h;
+                CRYPTO_STATIC_MUTEX_lock_read(&g_ent_hashes_lock);
+                if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp)) {
+                    hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
+                    k = hent->suffix;
+                } else {
+                    hent = NULL;
+                    k = 0;
+                }
+                CRYPTO_STATIC_MUTEX_unlock_read(&g_ent_hashes_lock);
+            } else {
+                k = 0;
+                hent = NULL;
+            }
+            for (;;) {
+                char c = '/';
+#ifdef OPENSSL_SYS_VMS
+                c = ent->dir[strlen(ent->dir) - 1];
+                if (c != ':' && c != '>' && c != ']') {
+                    /*
+                     * If no separator is present, we assume the directory
+                     * specifier is a logical name, and add a colon.  We
+                     * really should use better VMS routines for merging
+                     * things like this, but this will do for now... --
+                     * Richard Levitte
+                     */
+                    c = ':';
+                } else {
+                    c = '\0';
+                }
+#endif
+                if (c == '\0') {
+                    /*
+                     * This is special.  When c == '\0', no directory
+                     * separator should be added.
+                     */
+                    BIO_snprintf(b->data, b->max,
+                                 "%s%08lx.%s%d", ent->dir, h, postfix, k);
+                } else {
+                    BIO_snprintf(b->data, b->max,
+                                 "%s%c%08lx.%s%d", ent->dir, c, h,
+                                 postfix, k);
+                }
+#ifndef OPENSSL_NO_POSIX_IO
+# if defined(_WIN32) && !defined(stat)
+#  define stat _stat
+# endif
+                {
+                    struct stat st;
+                    if (stat(b->data, &st) < 0)
+                        break;
+                }
+#endif
+                /* found one. */
+                if (type == X509_LU_X509) {
+                    if ((X509_load_cert_file(xl, b->data,
+                                             ent->dir_type)) == 0)
+                        break;
+                } else if (type == X509_LU_CRL) {
+                    if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
+                        break;
+                }
+                /* else case will caught higher up */
+                k++;
+            }
+
+            /*
+             * we have added it to the cache so now pull it out again
+             */
+            CRYPTO_MUTEX_lock_write(&xl->store_ctx->objs_lock);
+            tmp = NULL;
+            sk_X509_OBJECT_sort(xl->store_ctx->objs);
+            if (sk_X509_OBJECT_find(xl->store_ctx->objs, &idx, &stmp)) {
+                tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, idx);
+            }
+            CRYPTO_MUTEX_unlock_write(&xl->store_ctx->objs_lock);
+
+            /*
+             * If a CRL, update the last file suffix added for this
+             */
+
+            if (type == X509_LU_CRL) {
+                CRYPTO_STATIC_MUTEX_lock_write(&g_ent_hashes_lock);
+                /*
+                 * Look for entry again in case another thread added an entry
+                 * first.
+                 */
+                if (!hent) {
+                    htmp.hash = h;
+                    sk_BY_DIR_HASH_sort(ent->hashes);
+                    if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp))
+                        hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
+                }
+                if (!hent) {
+                    hent = OPENSSL_malloc(sizeof(BY_DIR_HASH));
+                    if (hent == NULL) {
+                        CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+                        ok = 0;
+                        goto finish;
+                    }
+                    hent->hash = h;
+                    hent->suffix = k;
+                    if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
+                        CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+                        OPENSSL_free(hent);
+                        ok = 0;
+                        goto finish;
+                    }
+                    sk_BY_DIR_HASH_sort(ent->hashes);
+                } else if (hent->suffix < k)
+                    hent->suffix = k;
+
+                CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+            }
+
+            if (tmp != NULL) {
+                ok = 1;
+                ret->type = tmp->type;
+                OPENSSL_memcpy(&ret->data, &tmp->data, sizeof(ret->data));
+                /*
+                 * If we were going to up the reference count, we would need
+                 * to do it on a perl 'type' basis
+                 */
+                /*
+                 * CRYPTO_add(&tmp->data.x509->references,1,
+                 * CRYPTO_LOCK_X509);
+                 */
+                goto finish;
+            }
+        }
+    }
+ finish:
+    if (b != NULL)
+        BUF_MEM_free(b);
+    return (ok);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c.grpc_back
new file mode 100644
index 0000000..7b91cbd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_dir.c.grpc_back	
@@ -0,0 +1,458 @@
+/* crypto/x509/by_dir.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+
+#if !defined(OPENSSL_TRUSTY)
+
+#include "../internal.h"
+
+typedef struct lookup_dir_hashes_st {
+    unsigned long hash;
+    int suffix;
+} BY_DIR_HASH;
+
+typedef struct lookup_dir_entry_st {
+    char *dir;
+    int dir_type;
+    STACK_OF(BY_DIR_HASH) *hashes;
+} BY_DIR_ENTRY;
+
+typedef struct lookup_dir_st {
+    BUF_MEM *buffer;
+    STACK_OF(BY_DIR_ENTRY) *dirs;
+} BY_DIR;
+
+DEFINE_STACK_OF(BY_DIR_HASH)
+DEFINE_STACK_OF(BY_DIR_ENTRY)
+
+static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
+                    char **ret);
+static int new_dir(X509_LOOKUP *lu);
+static void free_dir(X509_LOOKUP *lu);
+static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
+static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
+                               X509_OBJECT *ret);
+static X509_LOOKUP_METHOD x509_dir_lookup = {
+    "Load certs from files in a directory",
+    new_dir,                    /* new */
+    free_dir,                   /* free */
+    NULL,                       /* init */
+    NULL,                       /* shutdown */
+    dir_ctrl,                   /* ctrl */
+    get_cert_by_subject,        /* get_by_subject */
+    NULL,                       /* get_by_issuer_serial */
+    NULL,                       /* get_by_fingerprint */
+    NULL,                       /* get_by_alias */
+};
+
+X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
+{
+    return (&x509_dir_lookup);
+}
+
+static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
+                    char **retp)
+{
+    int ret = 0;
+    BY_DIR *ld;
+    char *dir = NULL;
+
+    ld = (BY_DIR *)ctx->method_data;
+
+    switch (cmd) {
+    case X509_L_ADD_DIR:
+        if (argl == X509_FILETYPE_DEFAULT) {
+            dir = (char *)getenv(X509_get_default_cert_dir_env());
+            if (dir)
+                ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
+            else
+                ret = add_cert_dir(ld, X509_get_default_cert_dir(),
+                                   X509_FILETYPE_PEM);
+            if (!ret) {
+                OPENSSL_PUT_ERROR(X509, X509_R_LOADING_CERT_DIR);
+            }
+        } else
+            ret = add_cert_dir(ld, argp, (int)argl);
+        break;
+    }
+    return (ret);
+}
+
+static int new_dir(X509_LOOKUP *lu)
+{
+    BY_DIR *a;
+
+    if ((a = (BY_DIR *)OPENSSL_malloc(sizeof(BY_DIR))) == NULL)
+        return (0);
+    if ((a->buffer = BUF_MEM_new()) == NULL) {
+        OPENSSL_free(a);
+        return (0);
+    }
+    a->dirs = NULL;
+    lu->method_data = (char *)a;
+    return (1);
+}
+
+static void by_dir_hash_free(BY_DIR_HASH *hash)
+{
+    OPENSSL_free(hash);
+}
+
+static int by_dir_hash_cmp(const BY_DIR_HASH **a, const BY_DIR_HASH **b)
+{
+    if ((*a)->hash > (*b)->hash)
+        return 1;
+    if ((*a)->hash < (*b)->hash)
+        return -1;
+    return 0;
+}
+
+static void by_dir_entry_free(BY_DIR_ENTRY *ent)
+{
+    if (ent->dir)
+        OPENSSL_free(ent->dir);
+    if (ent->hashes)
+        sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
+    OPENSSL_free(ent);
+}
+
+static void free_dir(X509_LOOKUP *lu)
+{
+    BY_DIR *a;
+
+    a = (BY_DIR *)lu->method_data;
+    if (a->dirs != NULL)
+        sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
+    if (a->buffer != NULL)
+        BUF_MEM_free(a->buffer);
+    OPENSSL_free(a);
+}
+
+static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
+{
+    size_t j, len;
+    const char *s, *ss, *p;
+
+    if (dir == NULL || !*dir) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_DIRECTORY);
+        return 0;
+    }
+
+    s = dir;
+    p = s;
+    do {
+        if ((*p == ':') || (*p == '\0')) {
+            BY_DIR_ENTRY *ent;
+            ss = s;
+            s = p + 1;
+            len = p - ss;
+            if (len == 0)
+                continue;
+            for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
+                ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
+                if (strlen(ent->dir) == len &&
+                    strncmp(ent->dir, ss, len) == 0)
+                    break;
+            }
+            if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
+                continue;
+            if (ctx->dirs == NULL) {
+                ctx->dirs = sk_BY_DIR_ENTRY_new_null();
+                if (!ctx->dirs) {
+                    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                    return 0;
+                }
+            }
+            ent = OPENSSL_malloc(sizeof(BY_DIR_ENTRY));
+            if (!ent)
+                return 0;
+            ent->dir_type = type;
+            ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
+            ent->dir = OPENSSL_malloc(len + 1);
+            if (!ent->dir || !ent->hashes) {
+                by_dir_entry_free(ent);
+                return 0;
+            }
+            OPENSSL_strlcpy(ent->dir, ss, len + 1);
+            if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
+                by_dir_entry_free(ent);
+                return 0;
+            }
+        }
+    } while (*p++ != '\0');
+    return 1;
+}
+
+/*
+ * g_ent_hashes_lock protects the |hashes| member of all |BY_DIR_ENTRY|
+ * objects.
+ */
+static struct CRYPTO_STATIC_MUTEX g_ent_hashes_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
+                               X509_OBJECT *ret)
+{
+    BY_DIR *ctx;
+    union {
+        struct {
+            X509 st_x509;
+            X509_CINF st_x509_cinf;
+        } x509;
+        struct {
+            X509_CRL st_crl;
+            X509_CRL_INFO st_crl_info;
+        } crl;
+    } data;
+    int ok = 0;
+    size_t i;
+    int j, k;
+    unsigned long h;
+    unsigned long hash_array[2];
+    int hash_index;
+    BUF_MEM *b = NULL;
+    X509_OBJECT stmp, *tmp;
+    const char *postfix = "";
+
+    if (name == NULL)
+        return (0);
+
+    stmp.type = type;
+    if (type == X509_LU_X509) {
+        data.x509.st_x509.cert_info = &data.x509.st_x509_cinf;
+        data.x509.st_x509_cinf.subject = name;
+        stmp.data.x509 = &data.x509.st_x509;
+        postfix = "";
+    } else if (type == X509_LU_CRL) {
+        data.crl.st_crl.crl = &data.crl.st_crl_info;
+        data.crl.st_crl_info.issuer = name;
+        stmp.data.crl = &data.crl.st_crl;
+        postfix = "r";
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_WRONG_LOOKUP_TYPE);
+        goto finish;
+    }
+
+    if ((b = BUF_MEM_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        goto finish;
+    }
+
+    ctx = (BY_DIR *)xl->method_data;
+
+    hash_array[0] = X509_NAME_hash(name);
+    hash_array[1] = X509_NAME_hash_old(name);
+    for (hash_index = 0; hash_index < 2; ++hash_index) {
+        h = hash_array[hash_index];
+        for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
+            BY_DIR_ENTRY *ent;
+            size_t idx;
+            BY_DIR_HASH htmp, *hent;
+            ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
+            j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
+            if (!BUF_MEM_grow(b, j)) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                goto finish;
+            }
+            if (type == X509_LU_CRL && ent->hashes) {
+                htmp.hash = h;
+                CRYPTO_STATIC_MUTEX_lock_read(&g_ent_hashes_lock);
+                if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp)) {
+                    hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
+                    k = hent->suffix;
+                } else {
+                    hent = NULL;
+                    k = 0;
+                }
+                CRYPTO_STATIC_MUTEX_unlock_read(&g_ent_hashes_lock);
+            } else {
+                k = 0;
+                hent = NULL;
+            }
+            for (;;) {
+                char c = '/';
+#ifdef OPENSSL_SYS_VMS
+                c = ent->dir[strlen(ent->dir) - 1];
+                if (c != ':' && c != '>' && c != ']') {
+                    /*
+                     * If no separator is present, we assume the directory
+                     * specifier is a logical name, and add a colon.  We
+                     * really should use better VMS routines for merging
+                     * things like this, but this will do for now... --
+                     * Richard Levitte
+                     */
+                    c = ':';
+                } else {
+                    c = '\0';
+                }
+#endif
+                if (c == '\0') {
+                    /*
+                     * This is special.  When c == '\0', no directory
+                     * separator should be added.
+                     */
+                    BIO_snprintf(b->data, b->max,
+                                 "%s%08lx.%s%d", ent->dir, h, postfix, k);
+                } else {
+                    BIO_snprintf(b->data, b->max,
+                                 "%s%c%08lx.%s%d", ent->dir, c, h,
+                                 postfix, k);
+                }
+#ifndef OPENSSL_NO_POSIX_IO
+# if defined(_WIN32) && !defined(stat)
+#  define stat _stat
+# endif
+                {
+                    struct stat st;
+                    if (stat(b->data, &st) < 0)
+                        break;
+                }
+#endif
+                /* found one. */
+                if (type == X509_LU_X509) {
+                    if ((X509_load_cert_file(xl, b->data,
+                                             ent->dir_type)) == 0)
+                        break;
+                } else if (type == X509_LU_CRL) {
+                    if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
+                        break;
+                }
+                /* else case will caught higher up */
+                k++;
+            }
+
+            /*
+             * we have added it to the cache so now pull it out again
+             */
+            CRYPTO_MUTEX_lock_write(&xl->store_ctx->objs_lock);
+            tmp = NULL;
+            sk_X509_OBJECT_sort(xl->store_ctx->objs);
+            if (sk_X509_OBJECT_find(xl->store_ctx->objs, &idx, &stmp)) {
+                tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, idx);
+            }
+            CRYPTO_MUTEX_unlock_write(&xl->store_ctx->objs_lock);
+
+            /*
+             * If a CRL, update the last file suffix added for this
+             */
+
+            if (type == X509_LU_CRL) {
+                CRYPTO_STATIC_MUTEX_lock_write(&g_ent_hashes_lock);
+                /*
+                 * Look for entry again in case another thread added an entry
+                 * first.
+                 */
+                if (!hent) {
+                    htmp.hash = h;
+                    sk_BY_DIR_HASH_sort(ent->hashes);
+                    if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp))
+                        hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
+                }
+                if (!hent) {
+                    hent = OPENSSL_malloc(sizeof(BY_DIR_HASH));
+                    if (hent == NULL) {
+                        CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+                        ok = 0;
+                        goto finish;
+                    }
+                    hent->hash = h;
+                    hent->suffix = k;
+                    if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
+                        CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+                        OPENSSL_free(hent);
+                        ok = 0;
+                        goto finish;
+                    }
+                    sk_BY_DIR_HASH_sort(ent->hashes);
+                } else if (hent->suffix < k)
+                    hent->suffix = k;
+
+                CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
+            }
+
+            if (tmp != NULL) {
+                ok = 1;
+                ret->type = tmp->type;
+                OPENSSL_memcpy(&ret->data, &tmp->data, sizeof(ret->data));
+                /*
+                 * If we were going to up the reference count, we would need
+                 * to do it on a perl 'type' basis
+                 */
+                /*
+                 * CRYPTO_add(&tmp->data.x509->references,1,
+                 * CRYPTO_LOCK_X509);
+                 */
+                goto finish;
+            }
+        }
+    }
+ finish:
+    if (b != NULL)
+        BUF_MEM_free(b);
+    return (ok);
+}
+
+#endif  // OPENSSL_TRUSTY
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c
new file mode 100644
index 0000000..dd61302
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c	
@@ -0,0 +1,275 @@
+/* crypto/x509/by_file.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdlib.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/thread.h>
+
+#ifndef OPENSSL_NO_STDIO
+
+static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+                        long argl, char **ret);
+static X509_LOOKUP_METHOD x509_file_lookup = {
+    "Load file into cache",
+    NULL,                       /* new */
+    NULL,                       /* free */
+    NULL,                       /* init */
+    NULL,                       /* shutdown */
+    by_file_ctrl,               /* ctrl */
+    NULL,                       /* get_by_subject */
+    NULL,                       /* get_by_issuer_serial */
+    NULL,                       /* get_by_fingerprint */
+    NULL,                       /* get_by_alias */
+};
+
+X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
+{
+    return (&x509_file_lookup);
+}
+
+static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp,
+                        long argl, char **ret)
+{
+    int ok = 0;
+    const char *file;
+
+    switch (cmd) {
+    case X509_L_FILE_LOAD:
+        if (argl == X509_FILETYPE_DEFAULT) {
+            file = getenv(X509_get_default_cert_file_env());
+            if (file)
+                ok = (X509_load_cert_crl_file(ctx, file,
+                                              X509_FILETYPE_PEM) != 0);
+
+            else
+                ok = (X509_load_cert_crl_file
+                      (ctx, X509_get_default_cert_file(),
+                       X509_FILETYPE_PEM) != 0);
+
+            if (!ok) {
+                OPENSSL_PUT_ERROR(X509, X509_R_LOADING_DEFAULTS);
+            }
+        } else {
+            if (argl == X509_FILETYPE_PEM)
+                ok = (X509_load_cert_crl_file(ctx, argp,
+                                              X509_FILETYPE_PEM) != 0);
+            else
+                ok = (X509_load_cert_file(ctx, argp, (int)argl) != 0);
+        }
+        break;
+    }
+    return (ok);
+}
+
+int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    int ret = 0;
+    BIO *in = NULL;
+    int i, count = 0;
+    X509 *x = NULL;
+
+    if (file == NULL)
+        return (1);
+    in = BIO_new(BIO_s_file());
+
+    if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        goto err;
+    }
+
+    if (type == X509_FILETYPE_PEM) {
+        for (;;) {
+            x = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
+            if (x == NULL) {
+                uint32_t error = ERR_peek_last_error();
+                if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                    ERR_GET_REASON(error) == PEM_R_NO_START_LINE &&
+                    count > 0) {
+                    ERR_clear_error();
+                    break;
+                }
+                OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+                goto err;
+            }
+            i = X509_STORE_add_cert(ctx->store_ctx, x);
+            if (!i)
+                goto err;
+            count++;
+            X509_free(x);
+            x = NULL;
+        }
+        ret = count;
+    } else if (type == X509_FILETYPE_ASN1) {
+        x = d2i_X509_bio(in, NULL);
+        if (x == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            goto err;
+        }
+        i = X509_STORE_add_cert(ctx->store_ctx, x);
+        if (!i)
+            goto err;
+        ret = i;
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_BAD_X509_FILETYPE);
+        goto err;
+    }
+ err:
+    if (x != NULL)
+        X509_free(x);
+    if (in != NULL)
+        BIO_free(in);
+    return (ret);
+}
+
+int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    int ret = 0;
+    BIO *in = NULL;
+    int i, count = 0;
+    X509_CRL *x = NULL;
+
+    if (file == NULL)
+        return (1);
+    in = BIO_new(BIO_s_file());
+
+    if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        goto err;
+    }
+
+    if (type == X509_FILETYPE_PEM) {
+        for (;;) {
+            x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
+            if (x == NULL) {
+                uint32_t error = ERR_peek_last_error();
+                if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                    ERR_GET_REASON(error) == PEM_R_NO_START_LINE &&
+                    count > 0) {
+                    ERR_clear_error();
+                    break;
+                }
+                OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+                goto err;
+            }
+            i = X509_STORE_add_crl(ctx->store_ctx, x);
+            if (!i)
+                goto err;
+            count++;
+            X509_CRL_free(x);
+            x = NULL;
+        }
+        ret = count;
+    } else if (type == X509_FILETYPE_ASN1) {
+        x = d2i_X509_CRL_bio(in, NULL);
+        if (x == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            goto err;
+        }
+        i = X509_STORE_add_crl(ctx->store_ctx, x);
+        if (!i)
+            goto err;
+        ret = i;
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_BAD_X509_FILETYPE);
+        goto err;
+    }
+ err:
+    if (x != NULL)
+        X509_CRL_free(x);
+    if (in != NULL)
+        BIO_free(in);
+    return (ret);
+}
+
+int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    STACK_OF(X509_INFO) *inf;
+    X509_INFO *itmp;
+    BIO *in;
+    size_t i;
+    int count = 0;
+    if (type != X509_FILETYPE_PEM)
+        return X509_load_cert_file(ctx, file, type);
+    in = BIO_new_file(file, "r");
+    if (!in) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        return 0;
+    }
+    inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
+    BIO_free(in);
+    if (!inf) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+        return 0;
+    }
+    for (i = 0; i < sk_X509_INFO_num(inf); i++) {
+        itmp = sk_X509_INFO_value(inf, i);
+        if (itmp->x509) {
+            X509_STORE_add_cert(ctx->store_ctx, itmp->x509);
+            count++;
+        }
+        if (itmp->crl) {
+            X509_STORE_add_crl(ctx->store_ctx, itmp->crl);
+            count++;
+        }
+    }
+    sk_X509_INFO_pop_free(inf, X509_INFO_free);
+    return count;
+}
+
+#endif                          /* OPENSSL_NO_STDIO */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c.grpc_back
new file mode 100644
index 0000000..994beb9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/by_file.c.grpc_back	
@@ -0,0 +1,275 @@
+/* crypto/x509/by_file.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdlib.h>
+
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/thread.h>
+
+#ifndef OPENSSL_NO_STDIO
+
+static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+                        long argl, char **ret);
+static X509_LOOKUP_METHOD x509_file_lookup = {
+    "Load file into cache",
+    NULL,                       /* new */
+    NULL,                       /* free */
+    NULL,                       /* init */
+    NULL,                       /* shutdown */
+    by_file_ctrl,               /* ctrl */
+    NULL,                       /* get_by_subject */
+    NULL,                       /* get_by_issuer_serial */
+    NULL,                       /* get_by_fingerprint */
+    NULL,                       /* get_by_alias */
+};
+
+X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
+{
+    return (&x509_file_lookup);
+}
+
+static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp,
+                        long argl, char **ret)
+{
+    int ok = 0;
+    const char *file;
+
+    switch (cmd) {
+    case X509_L_FILE_LOAD:
+        if (argl == X509_FILETYPE_DEFAULT) {
+            file = getenv(X509_get_default_cert_file_env());
+            if (file)
+                ok = (X509_load_cert_crl_file(ctx, file,
+                                              X509_FILETYPE_PEM) != 0);
+
+            else
+                ok = (X509_load_cert_crl_file
+                      (ctx, X509_get_default_cert_file(),
+                       X509_FILETYPE_PEM) != 0);
+
+            if (!ok) {
+                OPENSSL_PUT_ERROR(X509, X509_R_LOADING_DEFAULTS);
+            }
+        } else {
+            if (argl == X509_FILETYPE_PEM)
+                ok = (X509_load_cert_crl_file(ctx, argp,
+                                              X509_FILETYPE_PEM) != 0);
+            else
+                ok = (X509_load_cert_file(ctx, argp, (int)argl) != 0);
+        }
+        break;
+    }
+    return (ok);
+}
+
+int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    int ret = 0;
+    BIO *in = NULL;
+    int i, count = 0;
+    X509 *x = NULL;
+
+    if (file == NULL)
+        return (1);
+    in = BIO_new(BIO_s_file());
+
+    if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        goto err;
+    }
+
+    if (type == X509_FILETYPE_PEM) {
+        for (;;) {
+            x = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
+            if (x == NULL) {
+                uint32_t error = ERR_peek_last_error();
+                if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                    ERR_GET_REASON(error) == PEM_R_NO_START_LINE &&
+                    count > 0) {
+                    ERR_clear_error();
+                    break;
+                }
+                OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+                goto err;
+            }
+            i = X509_STORE_add_cert(ctx->store_ctx, x);
+            if (!i)
+                goto err;
+            count++;
+            X509_free(x);
+            x = NULL;
+        }
+        ret = count;
+    } else if (type == X509_FILETYPE_ASN1) {
+        x = d2i_X509_bio(in, NULL);
+        if (x == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            goto err;
+        }
+        i = X509_STORE_add_cert(ctx->store_ctx, x);
+        if (!i)
+            goto err;
+        ret = i;
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_BAD_X509_FILETYPE);
+        goto err;
+    }
+ err:
+    if (x != NULL)
+        X509_free(x);
+    if (in != NULL)
+        BIO_free(in);
+    return (ret);
+}
+
+int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    int ret = 0;
+    BIO *in = NULL;
+    int i, count = 0;
+    X509_CRL *x = NULL;
+
+    if (file == NULL)
+        return (1);
+    in = BIO_new(BIO_s_file());
+
+    if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        goto err;
+    }
+
+    if (type == X509_FILETYPE_PEM) {
+        for (;;) {
+            x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
+            if (x == NULL) {
+                uint32_t error = ERR_peek_last_error();
+                if (ERR_GET_LIB(error) == ERR_LIB_PEM &&
+                    ERR_GET_REASON(error) == PEM_R_NO_START_LINE &&
+                    count > 0) {
+                    ERR_clear_error();
+                    break;
+                }
+                OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+                goto err;
+            }
+            i = X509_STORE_add_crl(ctx->store_ctx, x);
+            if (!i)
+                goto err;
+            count++;
+            X509_CRL_free(x);
+            x = NULL;
+        }
+        ret = count;
+    } else if (type == X509_FILETYPE_ASN1) {
+        x = d2i_X509_CRL_bio(in, NULL);
+        if (x == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            goto err;
+        }
+        i = X509_STORE_add_crl(ctx->store_ctx, x);
+        if (!i)
+            goto err;
+        ret = i;
+    } else {
+        OPENSSL_PUT_ERROR(X509, X509_R_BAD_X509_FILETYPE);
+        goto err;
+    }
+ err:
+    if (x != NULL)
+        X509_CRL_free(x);
+    if (in != NULL)
+        BIO_free(in);
+    return (ret);
+}
+
+int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
+{
+    STACK_OF(X509_INFO) *inf;
+    X509_INFO *itmp;
+    BIO *in;
+    size_t i;
+    int count = 0;
+    if (type != X509_FILETYPE_PEM)
+        return X509_load_cert_file(ctx, file, type);
+    in = BIO_new_file(file, "r");
+    if (!in) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_SYS_LIB);
+        return 0;
+    }
+    inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
+    BIO_free(in);
+    if (!inf) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PEM_LIB);
+        return 0;
+    }
+    for (i = 0; i < sk_X509_INFO_num(inf); i++) {
+        itmp = sk_X509_INFO_value(inf, i);
+        if (itmp->x509) {
+            X509_STORE_add_cert(ctx->store_ctx, itmp->x509);
+            count++;
+        }
+        if (itmp->crl) {
+            X509_STORE_add_crl(ctx->store_ctx, itmp->crl);
+            count++;
+        }
+    }
+    sk_X509_INFO_pop_free(inf, X509_INFO_free);
+    return count;
+}
+
+#endif                          /* OPENSSL_NO_STDIO */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h
new file mode 100644
index 0000000..3305ad1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h	
@@ -0,0 +1,15 @@
+/*
+ * Auto generated with chartype.pl script. Mask of various character
+ * properties
+ */
+
+static const unsigned char char_type[] = {
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    120, 0, 1, 40, 0, 0, 0, 16, 16, 16, 0, 25, 25, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 16, 9, 16,
+    0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 0, 1, 0, 0, 0,
+    0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 0, 0, 0, 0, 2
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h.grpc_back
new file mode 100644
index 0000000..3305ad1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/charmap.h.grpc_back	
@@ -0,0 +1,15 @@
+/*
+ * Auto generated with chartype.pl script. Mask of various character
+ * properties
+ */
+
+static const unsigned char char_type[] = {
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    120, 0, 1, 40, 0, 0, 0, 16, 16, 16, 0, 25, 25, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 16, 9, 16,
+    0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 0, 1, 0, 0, 0,
+    0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 0, 0, 0, 0, 2
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c
new file mode 100644
index 0000000..df75012
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c	
@@ -0,0 +1,83 @@
+/* crypto/asn1/i2d_pr.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/dsa.h>
+
+
+int i2d_PrivateKey(const EVP_PKEY *a, uint8_t **pp)
+{
+    switch (EVP_PKEY_id(a)) {
+    case EVP_PKEY_RSA:
+        return i2d_RSAPrivateKey(a->pkey.rsa, pp);
+    case EVP_PKEY_EC:
+        return i2d_ECPrivateKey(a->pkey.ec, pp);
+    case EVP_PKEY_DSA:
+        return i2d_DSAPrivateKey(a->pkey.dsa, pp);
+    default:
+        /*
+         * Although this file is in crypto/x509 for layering reasons, it emits
+         * an error code from ASN1 for OpenSSL compatibility.
+         */
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+        return -1;
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c.grpc_back
new file mode 100644
index 0000000..c3fb8a8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/i2d_pr.c.grpc_back	
@@ -0,0 +1,83 @@
+/* crypto/asn1/i2d_pr.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/rsa.h>
+#include <openssl/dsa.h>
+
+
+int i2d_PrivateKey(const EVP_PKEY *a, uint8_t **pp)
+{
+    switch (EVP_PKEY_id(a)) {
+    case EVP_PKEY_RSA:
+        return i2d_RSAPrivateKey(a->pkey.rsa, pp);
+    case EVP_PKEY_EC:
+        return i2d_ECPrivateKey(a->pkey.ec, pp);
+    case EVP_PKEY_DSA:
+        return i2d_DSAPrivateKey(a->pkey.dsa, pp);
+    default:
+        /*
+         * Although this file is in crypto/x509 for layering reasons, it emits
+         * an error code from ASN1 for OpenSSL compatibility.
+         */
+        OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+        return -1;
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h
new file mode 100644
index 0000000..435f90c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h	
@@ -0,0 +1,66 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_X509_INTERNAL_H
+#define OPENSSL_HEADER_X509_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/x509.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* RSA-PSS functions. */
+
+/* x509_rsa_pss_to_ctx configures |ctx| for an RSA-PSS operation based on
+ * signature algorithm parameters in |sigalg| (which must have type
+ * |NID_rsassaPss|) and key |pkey|. It returns one on success and zero on
+ * error. */
+int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey);
+
+/* x509_rsa_pss_to_ctx sets |algor| to the signature algorithm parameters for
+ * |ctx|, which must have been configured for an RSA-PSS signing operation. It
+ * returns one on success and zero on error. */
+int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor);
+
+/* x509_print_rsa_pss_params prints a human-readable representation of RSA-PSS
+ * parameters in |sigalg| to |bp|. It returns one on success and zero on
+ * error. */
+int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent,
+                              ASN1_PCTX *pctx);
+
+
+/* Signature algorithm functions. */
+
+/* x509_digest_sign_algorithm encodes the signing parameters of |ctx| as an
+ * AlgorithmIdentifer and saves the result in |algor|. It returns one on
+ * success, or zero on error. */
+int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor);
+
+/* x509_digest_verify_init sets up |ctx| for a signature verification operation
+ * with public key |pkey| and parameters from |algor|. The |ctx| argument must
+ * have been initialised with |EVP_MD_CTX_init|. It returns one on success, or
+ * zero on error. */
+int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
+                            EVP_PKEY *pkey);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_X509_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h.grpc_back
new file mode 100644
index 0000000..4957c1e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/internal.h.grpc_back	
@@ -0,0 +1,66 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_X509_INTERNAL_H
+#define OPENSSL_HEADER_X509_INTERNAL_H
+
+#include <openssl/base.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* RSA-PSS functions. */
+
+/* x509_rsa_pss_to_ctx configures |ctx| for an RSA-PSS operation based on
+ * signature algorithm parameters in |sigalg| (which must have type
+ * |NID_rsassaPss|) and key |pkey|. It returns one on success and zero on
+ * error. */
+int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey);
+
+/* x509_rsa_pss_to_ctx sets |algor| to the signature algorithm parameters for
+ * |ctx|, which must have been configured for an RSA-PSS signing operation. It
+ * returns one on success and zero on error. */
+int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor);
+
+/* x509_print_rsa_pss_params prints a human-readable representation of RSA-PSS
+ * parameters in |sigalg| to |bp|. It returns one on success and zero on
+ * error. */
+int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent,
+                              ASN1_PCTX *pctx);
+
+
+/* Signature algorithm functions. */
+
+/* x509_digest_sign_algorithm encodes the signing parameters of |ctx| as an
+ * AlgorithmIdentifer and saves the result in |algor|. It returns one on
+ * success, or zero on error. */
+int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor);
+
+/* x509_digest_verify_init sets up |ctx| for a signature verification operation
+ * with public key |pkey| and parameters from |algor|. The |ctx| argument must
+ * have been initialised with |EVP_MD_CTX_init|. It returns one on success, or
+ * zero on error. */
+int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
+                            EVP_PKEY *pkey);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_X509_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c
new file mode 100644
index 0000000..30ee781
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c	
@@ -0,0 +1,385 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/x509.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+
+#include "internal.h"
+
+
+ASN1_SEQUENCE(RSA_PSS_PARAMS) = {
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3),
+} ASN1_SEQUENCE_END(RSA_PSS_PARAMS)
+
+IMPLEMENT_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
+
+
+/* Given an MGF1 Algorithm ID decode to an Algorithm Identifier */
+static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) {
+  if (alg == NULL || alg->parameter == NULL ||
+      OBJ_obj2nid(alg->algorithm) != NID_mgf1 ||
+      alg->parameter->type != V_ASN1_SEQUENCE) {
+    return NULL;
+  }
+
+  const uint8_t *p = alg->parameter->value.sequence->data;
+  int plen = alg->parameter->value.sequence->length;
+  return d2i_X509_ALGOR(NULL, &p, plen);
+}
+
+static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
+                                      X509_ALGOR **pmaskHash) {
+  *pmaskHash = NULL;
+
+  if (alg->parameter == NULL || alg->parameter->type != V_ASN1_SEQUENCE) {
+    return NULL;
+  }
+
+  const uint8_t *p = alg->parameter->value.sequence->data;
+  int plen = alg->parameter->value.sequence->length;
+  RSA_PSS_PARAMS *pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);
+  if (pss == NULL) {
+    return NULL;
+  }
+
+  *pmaskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
+  return pss;
+}
+
+/* allocate and set algorithm ID from EVP_MD, default SHA1 */
+static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md) {
+  if (EVP_MD_type(md) == NID_sha1) {
+    return 1;
+  }
+  *palg = X509_ALGOR_new();
+  if (*palg == NULL) {
+    return 0;
+  }
+  X509_ALGOR_set_md(*palg, md);
+  return 1;
+}
+
+/* Allocate and set MGF1 algorithm ID from EVP_MD */
+static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md) {
+  X509_ALGOR *algtmp = NULL;
+  ASN1_STRING *stmp = NULL;
+  *palg = NULL;
+
+  if (EVP_MD_type(mgf1md) == NID_sha1) {
+    return 1;
+  }
+  /* need to embed algorithm ID inside another */
+  if (!rsa_md_to_algor(&algtmp, mgf1md) ||
+      !ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp)) {
+    goto err;
+  }
+  *palg = X509_ALGOR_new();
+  if (!*palg) {
+    goto err;
+  }
+  X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
+  stmp = NULL;
+
+err:
+  ASN1_STRING_free(stmp);
+  X509_ALGOR_free(algtmp);
+  if (*palg) {
+    return 1;
+  }
+
+  return 0;
+}
+
+/* convert algorithm ID to EVP_MD, default SHA1 */
+static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg) {
+  const EVP_MD *md;
+  if (!alg) {
+    return EVP_sha1();
+  }
+  md = EVP_get_digestbyobj(alg->algorithm);
+  if (md == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+  }
+  return md;
+}
+
+/* convert MGF1 algorithm ID to EVP_MD, default SHA1 */
+static const EVP_MD *rsa_mgf1_to_md(X509_ALGOR *alg, X509_ALGOR *maskHash) {
+  const EVP_MD *md;
+  if (!alg) {
+    return EVP_sha1();
+  }
+  /* Check mask and lookup mask hash algorithm */
+  if (OBJ_obj2nid(alg->algorithm) != NID_mgf1 ||
+      maskHash == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    return NULL;
+  }
+  md = EVP_get_digestbyobj(maskHash->algorithm);
+  if (md == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    return NULL;
+  }
+  return md;
+}
+
+int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
+  const EVP_MD *sigmd, *mgf1md;
+  int saltlen;
+  if (!EVP_PKEY_CTX_get_signature_md(ctx->pctx, &sigmd) ||
+      !EVP_PKEY_CTX_get_rsa_mgf1_md(ctx->pctx, &mgf1md) ||
+      !EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx->pctx, &saltlen)) {
+    return 0;
+  }
+
+  EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+  if (saltlen == -1) {
+    saltlen = EVP_MD_size(sigmd);
+  } else if (saltlen == -2) {
+    saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
+    if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) {
+      saltlen--;
+    }
+  } else {
+    return 0;
+  }
+
+  int ret = 0;
+  ASN1_STRING *os = NULL;
+  RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
+  if (!pss) {
+    goto err;
+  }
+
+  if (saltlen != 20) {
+    pss->saltLength = ASN1_INTEGER_new();
+    if (!pss->saltLength ||
+        !ASN1_INTEGER_set(pss->saltLength, saltlen)) {
+      goto err;
+    }
+  }
+
+  if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd) ||
+      !rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md)) {
+    goto err;
+  }
+
+  /* Finally create string with pss parameter encoding. */
+  if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os)) {
+    goto err;
+  }
+
+  X509_ALGOR_set0(algor, OBJ_nid2obj(NID_rsassaPss), V_ASN1_SEQUENCE, os);
+  os = NULL;
+  ret = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  ASN1_STRING_free(os);
+  return ret;
+}
+
+int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey) {
+  assert(OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss);
+
+  /* Decode PSS parameters */
+  int ret = 0;
+  X509_ALGOR *maskHash;
+  RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg, &maskHash);
+  if (pss == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    goto err;
+  }
+
+  const EVP_MD *mgf1md = rsa_mgf1_to_md(pss->maskGenAlgorithm, maskHash);
+  const EVP_MD *md = rsa_algor_to_md(pss->hashAlgorithm);
+  if (mgf1md == NULL || md == NULL) {
+    goto err;
+  }
+
+  int saltlen = 20;
+  if (pss->saltLength != NULL) {
+    saltlen = ASN1_INTEGER_get(pss->saltLength);
+
+    /* Could perform more salt length sanity checks but the main
+     * RSA routines will trap other invalid values anyway. */
+    if (saltlen < 0) {
+      OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+      goto err;
+    }
+  }
+
+  /* low-level routines support only trailer field 0xbc (value 1)
+   * and PKCS#1 says we should reject any other value anyway. */
+  if (pss->trailerField != NULL && ASN1_INTEGER_get(pss->trailerField) != 1) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    goto err;
+  }
+
+  EVP_PKEY_CTX *pctx;
+  if (!EVP_DigestVerifyInit(ctx, &pctx, md, NULL, pkey) ||
+      !EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) ||
+      !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, saltlen) ||
+      !EVP_PKEY_CTX_set_rsa_mgf1_md(pctx, mgf1md)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  X509_ALGOR_free(maskHash);
+  return ret;
+}
+
+int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent,
+                              ASN1_PCTX *pctx) {
+  assert(OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss);
+
+  int rv = 0;
+  X509_ALGOR *maskHash;
+  RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg, &maskHash);
+  if (!pss) {
+    if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) {
+      goto err;
+    }
+    rv = 1;
+    goto err;
+  }
+
+  if (BIO_puts(bp, "\n") <= 0 ||
+      !BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Hash Algorithm: ") <= 0) {
+    goto err;
+  }
+
+  if (pss->hashAlgorithm) {
+    if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "sha1 (default)") <= 0) {
+    goto err;
+  }
+
+  if (BIO_puts(bp, "\n") <= 0 ||
+      !BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Mask Algorithm: ") <= 0) {
+    goto err;
+  }
+
+  if (pss->maskGenAlgorithm) {
+    if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0 ||
+        BIO_puts(bp, " with ") <= 0) {
+      goto err;
+    }
+
+    if (maskHash) {
+      if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) {
+        goto err;
+      }
+    } else if (BIO_puts(bp, "INVALID") <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  if (!BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Salt Length: 0x") <= 0) {
+    goto err;
+  }
+
+  if (pss->saltLength) {
+    if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "14 (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  if (!BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Trailer Field: 0x") <= 0) {
+    goto err;
+  }
+
+  if (pss->trailerField) {
+    if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "BC (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  rv = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  X509_ALGOR_free(maskHash);
+  return rv;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c.grpc_back
new file mode 100644
index 0000000..9230934
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/rsa_pss.c.grpc_back	
@@ -0,0 +1,385 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/x509.h>
+
+#include <assert.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bio.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+
+#include "internal.h"
+
+
+ASN1_SEQUENCE(RSA_PSS_PARAMS) = {
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
+  ASN1_EXP_OPT(RSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3),
+} ASN1_SEQUENCE_END(RSA_PSS_PARAMS)
+
+IMPLEMENT_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
+
+
+/* Given an MGF1 Algorithm ID decode to an Algorithm Identifier */
+static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) {
+  if (alg == NULL || alg->parameter == NULL ||
+      OBJ_obj2nid(alg->algorithm) != NID_mgf1 ||
+      alg->parameter->type != V_ASN1_SEQUENCE) {
+    return NULL;
+  }
+
+  const uint8_t *p = alg->parameter->value.sequence->data;
+  int plen = alg->parameter->value.sequence->length;
+  return d2i_X509_ALGOR(NULL, &p, plen);
+}
+
+static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
+                                      X509_ALGOR **pmaskHash) {
+  *pmaskHash = NULL;
+
+  if (alg->parameter == NULL || alg->parameter->type != V_ASN1_SEQUENCE) {
+    return NULL;
+  }
+
+  const uint8_t *p = alg->parameter->value.sequence->data;
+  int plen = alg->parameter->value.sequence->length;
+  RSA_PSS_PARAMS *pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);
+  if (pss == NULL) {
+    return NULL;
+  }
+
+  *pmaskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
+  return pss;
+}
+
+/* allocate and set algorithm ID from EVP_MD, default SHA1 */
+static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md) {
+  if (EVP_MD_type(md) == NID_sha1) {
+    return 1;
+  }
+  *palg = X509_ALGOR_new();
+  if (*palg == NULL) {
+    return 0;
+  }
+  X509_ALGOR_set_md(*palg, md);
+  return 1;
+}
+
+/* Allocate and set MGF1 algorithm ID from EVP_MD */
+static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md) {
+  X509_ALGOR *algtmp = NULL;
+  ASN1_STRING *stmp = NULL;
+  *palg = NULL;
+
+  if (EVP_MD_type(mgf1md) == NID_sha1) {
+    return 1;
+  }
+  /* need to embed algorithm ID inside another */
+  if (!rsa_md_to_algor(&algtmp, mgf1md) ||
+      !ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp)) {
+    goto err;
+  }
+  *palg = X509_ALGOR_new();
+  if (!*palg) {
+    goto err;
+  }
+  X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
+  stmp = NULL;
+
+err:
+  ASN1_STRING_free(stmp);
+  X509_ALGOR_free(algtmp);
+  if (*palg) {
+    return 1;
+  }
+
+  return 0;
+}
+
+/* convert algorithm ID to EVP_MD, default SHA1 */
+static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg) {
+  const EVP_MD *md;
+  if (!alg) {
+    return EVP_sha1();
+  }
+  md = EVP_get_digestbyobj(alg->algorithm);
+  if (md == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+  }
+  return md;
+}
+
+/* convert MGF1 algorithm ID to EVP_MD, default SHA1 */
+static const EVP_MD *rsa_mgf1_to_md(X509_ALGOR *alg, X509_ALGOR *maskHash) {
+  const EVP_MD *md;
+  if (!alg) {
+    return EVP_sha1();
+  }
+  /* Check mask and lookup mask hash algorithm */
+  if (OBJ_obj2nid(alg->algorithm) != NID_mgf1 ||
+      maskHash == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    return NULL;
+  }
+  md = EVP_get_digestbyobj(maskHash->algorithm);
+  if (md == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    return NULL;
+  }
+  return md;
+}
+
+int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
+  const EVP_MD *sigmd, *mgf1md;
+  int saltlen;
+  if (!EVP_PKEY_CTX_get_signature_md(ctx->pctx, &sigmd) ||
+      !EVP_PKEY_CTX_get_rsa_mgf1_md(ctx->pctx, &mgf1md) ||
+      !EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx->pctx, &saltlen)) {
+    return 0;
+  }
+
+  EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+  if (saltlen == -1) {
+    saltlen = EVP_MD_size(sigmd);
+  } else if (saltlen == -2) {
+    saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
+    if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) {
+      saltlen--;
+    }
+  } else {
+    return 0;
+  }
+
+  int ret = 0;
+  ASN1_STRING *os = NULL;
+  RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
+  if (!pss) {
+    goto err;
+  }
+
+  if (saltlen != 20) {
+    pss->saltLength = ASN1_INTEGER_new();
+    if (!pss->saltLength ||
+        !ASN1_INTEGER_set(pss->saltLength, saltlen)) {
+      goto err;
+    }
+  }
+
+  if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd) ||
+      !rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md)) {
+    goto err;
+  }
+
+  /* Finally create string with pss parameter encoding. */
+  if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os)) {
+    goto err;
+  }
+
+  X509_ALGOR_set0(algor, OBJ_nid2obj(NID_rsassaPss), V_ASN1_SEQUENCE, os);
+  os = NULL;
+  ret = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  ASN1_STRING_free(os);
+  return ret;
+}
+
+int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey) {
+  assert(OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss);
+
+  /* Decode PSS parameters */
+  int ret = 0;
+  X509_ALGOR *maskHash;
+  RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg, &maskHash);
+  if (pss == NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    goto err;
+  }
+
+  const EVP_MD *mgf1md = rsa_mgf1_to_md(pss->maskGenAlgorithm, maskHash);
+  const EVP_MD *md = rsa_algor_to_md(pss->hashAlgorithm);
+  if (mgf1md == NULL || md == NULL) {
+    goto err;
+  }
+
+  int saltlen = 20;
+  if (pss->saltLength != NULL) {
+    saltlen = ASN1_INTEGER_get(pss->saltLength);
+
+    /* Could perform more salt length sanity checks but the main
+     * RSA routines will trap other invalid values anyway. */
+    if (saltlen < 0) {
+      OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+      goto err;
+    }
+  }
+
+  /* low-level routines support only trailer field 0xbc (value 1)
+   * and PKCS#1 says we should reject any other value anyway. */
+  if (pss->trailerField != NULL && ASN1_INTEGER_get(pss->trailerField) != 1) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PSS_PARAMETERS);
+    goto err;
+  }
+
+  EVP_PKEY_CTX *pctx;
+  if (!EVP_DigestVerifyInit(ctx, &pctx, md, NULL, pkey) ||
+      !EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) ||
+      !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, saltlen) ||
+      !EVP_PKEY_CTX_set_rsa_mgf1_md(pctx, mgf1md)) {
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  X509_ALGOR_free(maskHash);
+  return ret;
+}
+
+int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent,
+                              ASN1_PCTX *pctx) {
+  assert(OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss);
+
+  int rv = 0;
+  X509_ALGOR *maskHash;
+  RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg, &maskHash);
+  if (!pss) {
+    if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) {
+      goto err;
+    }
+    rv = 1;
+    goto err;
+  }
+
+  if (BIO_puts(bp, "\n") <= 0 ||
+      !BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Hash Algorithm: ") <= 0) {
+    goto err;
+  }
+
+  if (pss->hashAlgorithm) {
+    if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "sha1 (default)") <= 0) {
+    goto err;
+  }
+
+  if (BIO_puts(bp, "\n") <= 0 ||
+      !BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Mask Algorithm: ") <= 0) {
+    goto err;
+  }
+
+  if (pss->maskGenAlgorithm) {
+    if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0 ||
+        BIO_puts(bp, " with ") <= 0) {
+      goto err;
+    }
+
+    if (maskHash) {
+      if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) {
+        goto err;
+      }
+    } else if (BIO_puts(bp, "INVALID") <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  if (!BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Salt Length: 0x") <= 0) {
+    goto err;
+  }
+
+  if (pss->saltLength) {
+    if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "14 (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  if (!BIO_indent(bp, indent, 128) ||
+      BIO_puts(bp, "Trailer Field: 0x") <= 0) {
+    goto err;
+  }
+
+  if (pss->trailerField) {
+    if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) {
+      goto err;
+    }
+  } else if (BIO_puts(bp, "BC (default)") <= 0) {
+    goto err;
+  }
+  BIO_puts(bp, "\n");
+
+  rv = 1;
+
+err:
+  RSA_PSS_PARAMS_free(pss);
+  X509_ALGOR_free(maskHash);
+  return rv;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c
new file mode 100644
index 0000000..5c03f8f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c	
@@ -0,0 +1,125 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#ifndef OPENSSL_NO_FP_API
+int X509_CRL_print_fp(FILE *fp, X509_CRL *x)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = X509_CRL_print(b, x);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+int X509_CRL_print(BIO *out, X509_CRL *x)
+{
+    STACK_OF(X509_REVOKED) *rev;
+    X509_REVOKED *r;
+    long l;
+    size_t i;
+    char *p;
+
+    BIO_printf(out, "Certificate Revocation List (CRL):\n");
+    l = X509_CRL_get_version(x);
+    BIO_printf(out, "%8sVersion %lu (0x%lx)\n", "", l + 1, l);
+    X509_signature_print(out, x->sig_alg, NULL);
+    p = X509_NAME_oneline(X509_CRL_get_issuer(x), NULL, 0);
+    BIO_printf(out, "%8sIssuer: %s\n", "", p);
+    OPENSSL_free(p);
+    BIO_printf(out, "%8sLast Update: ", "");
+    ASN1_TIME_print(out, X509_CRL_get_lastUpdate(x));
+    BIO_printf(out, "\n%8sNext Update: ", "");
+    if (X509_CRL_get_nextUpdate(x))
+        ASN1_TIME_print(out, X509_CRL_get_nextUpdate(x));
+    else
+        BIO_printf(out, "NONE");
+    BIO_printf(out, "\n");
+
+    X509V3_extensions_print(out, "CRL extensions", x->crl->extensions, 0, 8);
+
+    rev = X509_CRL_get_REVOKED(x);
+
+    if (sk_X509_REVOKED_num(rev) > 0)
+        BIO_printf(out, "Revoked Certificates:\n");
+    else
+        BIO_printf(out, "No Revoked Certificates.\n");
+
+    for (i = 0; i < sk_X509_REVOKED_num(rev); i++) {
+        r = sk_X509_REVOKED_value(rev, i);
+        BIO_printf(out, "    Serial Number: ");
+        i2a_ASN1_INTEGER(out, r->serialNumber);
+        BIO_printf(out, "\n        Revocation Date: ");
+        ASN1_TIME_print(out, r->revocationDate);
+        BIO_printf(out, "\n");
+        X509V3_extensions_print(out, "CRL entry extensions",
+                                r->extensions, 0, 8);
+    }
+    X509_signature_print(out, x->sig_alg, x->signature);
+
+    return 1;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c.grpc_back
new file mode 100644
index 0000000..dc9b87f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_crl.c.grpc_back	
@@ -0,0 +1,125 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#ifndef OPENSSL_NO_FP_API
+int X509_CRL_print_fp(FILE *fp, X509_CRL *x)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = X509_CRL_print(b, x);
+    BIO_free(b);
+    return ret;
+}
+#endif
+
+int X509_CRL_print(BIO *out, X509_CRL *x)
+{
+    STACK_OF(X509_REVOKED) *rev;
+    X509_REVOKED *r;
+    long l;
+    size_t i;
+    char *p;
+
+    BIO_printf(out, "Certificate Revocation List (CRL):\n");
+    l = X509_CRL_get_version(x);
+    BIO_printf(out, "%8sVersion %lu (0x%lx)\n", "", l + 1, l);
+    X509_signature_print(out, x->sig_alg, NULL);
+    p = X509_NAME_oneline(X509_CRL_get_issuer(x), NULL, 0);
+    BIO_printf(out, "%8sIssuer: %s\n", "", p);
+    OPENSSL_free(p);
+    BIO_printf(out, "%8sLast Update: ", "");
+    ASN1_TIME_print(out, X509_CRL_get_lastUpdate(x));
+    BIO_printf(out, "\n%8sNext Update: ", "");
+    if (X509_CRL_get_nextUpdate(x))
+        ASN1_TIME_print(out, X509_CRL_get_nextUpdate(x));
+    else
+        BIO_printf(out, "NONE");
+    BIO_printf(out, "\n");
+
+    X509V3_extensions_print(out, "CRL extensions", x->crl->extensions, 0, 8);
+
+    rev = X509_CRL_get_REVOKED(x);
+
+    if (sk_X509_REVOKED_num(rev) > 0)
+        BIO_printf(out, "Revoked Certificates:\n");
+    else
+        BIO_printf(out, "No Revoked Certificates.\n");
+
+    for (i = 0; i < sk_X509_REVOKED_num(rev); i++) {
+        r = sk_X509_REVOKED_value(rev, i);
+        BIO_printf(out, "    Serial Number: ");
+        i2a_ASN1_INTEGER(out, r->serialNumber);
+        BIO_printf(out, "\n        Revocation Date: ");
+        ASN1_TIME_print(out, r->revocationDate);
+        BIO_printf(out, "\n");
+        X509V3_extensions_print(out, "CRL entry extensions",
+                                r->extensions, 0, 8);
+    }
+    X509_signature_print(out, x->sig_alg, x->signature);
+
+    return 1;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c
new file mode 100644
index 0000000..0e30794
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c	
@@ -0,0 +1,244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/buffer.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/objects.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+
+int X509_REQ_print_fp(FILE *fp, X509_REQ *x) {
+  BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);
+  if (bio == NULL) {
+    OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+    return 0;
+  }
+  int ret = X509_REQ_print(bio, x);
+  BIO_free(bio);
+  return ret;
+}
+
+int X509_REQ_print_ex(BIO *bio, X509_REQ *x, unsigned long nmflags,
+                      unsigned long cflag) {
+  long l;
+  EVP_PKEY *pkey;
+  STACK_OF(X509_ATTRIBUTE) * sk;
+  char mlch = ' ';
+
+  int nmindent = 0;
+
+  if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
+    mlch = '\n';
+    nmindent = 12;
+  }
+
+  if (nmflags == X509_FLAG_COMPAT) {
+    nmindent = 16;
+  }
+
+  X509_REQ_INFO *ri = x->req_info;
+  if (!(cflag & X509_FLAG_NO_HEADER)) {
+    if (BIO_write(bio, "Certificate Request:\n", 21) <= 0 ||
+        BIO_write(bio, "    Data:\n", 10) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_VERSION)) {
+    l = X509_REQ_get_version(x);
+    if (BIO_printf(bio, "%8sVersion: %ld (0x%lx)\n", "", l + 1, l) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_SUBJECT)) {
+    if (BIO_printf(bio, "        Subject:%c", mlch) <= 0 ||
+        X509_NAME_print_ex(bio, ri->subject, nmindent, nmflags) < 0 ||
+        BIO_write(bio, "\n", 1) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_PUBKEY)) {
+    if (BIO_write(bio, "        Subject Public Key Info:\n", 33) <= 0 ||
+        BIO_printf(bio, "%12sPublic Key Algorithm: ", "") <= 0 ||
+        i2a_ASN1_OBJECT(bio, ri->pubkey->algor->algorithm) <= 0 ||
+        BIO_puts(bio, "\n") <= 0) {
+      goto err;
+    }
+
+    pkey = X509_REQ_get_pubkey(x);
+    if (pkey == NULL) {
+      BIO_printf(bio, "%12sUnable to load Public Key\n", "");
+      ERR_print_errors(bio);
+    } else {
+      EVP_PKEY_print_public(bio, pkey, 16, NULL);
+      EVP_PKEY_free(pkey);
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_ATTRIBUTES)) {
+    if (BIO_printf(bio, "%8sAttributes:\n", "") <= 0) {
+      goto err;
+    }
+
+    sk = x->req_info->attributes;
+    if (sk_X509_ATTRIBUTE_num(sk) == 0) {
+      if (BIO_printf(bio, "%12sa0:00\n", "") <= 0) {
+        goto err;
+      }
+    } else {
+      size_t i;
+      for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
+        X509_ATTRIBUTE *a = sk_X509_ATTRIBUTE_value(sk, i);
+        ASN1_OBJECT *aobj = X509_ATTRIBUTE_get0_object(a);
+
+        if (X509_REQ_extension_nid(OBJ_obj2nid(aobj))) {
+          continue;
+        }
+
+        if (BIO_printf(bio, "%12s", "") <= 0) {
+          goto err;
+        }
+
+        const int num_attrs = X509_ATTRIBUTE_count(a);
+        const int obj_str_len = i2a_ASN1_OBJECT(bio, aobj);
+        if (obj_str_len <= 0) {
+          if (BIO_puts(bio, "(Unable to print attribute ID.)\n") < 0) {
+            goto err;
+          } else {
+            continue;
+          }
+        }
+
+        int j;
+        for (j = 0; j < num_attrs; j++) {
+          const ASN1_TYPE *at = X509_ATTRIBUTE_get0_type(a, j);
+          const int type = at->type;
+          ASN1_BIT_STRING *bs = at->value.asn1_string;
+
+          int k;
+          for (k = 25 - obj_str_len; k > 0; k--) {
+            if (BIO_write(bio, " ", 1) != 1) {
+              goto err;
+            }
+          }
+
+          if (BIO_puts(bio, ":") <= 0) {
+            goto err;
+          }
+
+          if (type == V_ASN1_PRINTABLESTRING ||
+              type == V_ASN1_UTF8STRING ||
+              type == V_ASN1_IA5STRING ||
+              type == V_ASN1_T61STRING) {
+            if (BIO_write(bio, (char *)bs->data, bs->length) != bs->length) {
+              goto err;
+            }
+            BIO_puts(bio, "\n");
+          } else {
+            BIO_puts(bio, "unable to print attribute\n");
+          }
+        }
+      }
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_EXTENSIONS)) {
+    STACK_OF(X509_EXTENSION) *exts = X509_REQ_get_extensions(x);
+    if (exts) {
+      BIO_printf(bio, "%8sRequested Extensions:\n", "");
+
+      size_t i;
+      for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
+        X509_EXTENSION *ex = sk_X509_EXTENSION_value(exts, i);
+        if (BIO_printf(bio, "%12s", "") <= 0) {
+          goto err;
+        }
+        ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
+        i2a_ASN1_OBJECT(bio, obj);
+        const int is_critical = X509_EXTENSION_get_critical(ex);
+        if (BIO_printf(bio, ": %s\n", is_critical ? "critical" : "") <= 0) {
+          goto err;
+        }
+        if (!X509V3_EXT_print(bio, ex, cflag, 16)) {
+          BIO_printf(bio, "%16s", "");
+          ASN1_STRING_print(bio, X509_EXTENSION_get_data(ex));
+        }
+        if (BIO_write(bio, "\n", 1) <= 0) {
+          goto err;
+        }
+      }
+      sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_SIGDUMP) &&
+      !X509_signature_print(bio, x->sig_alg, x->signature)) {
+    goto err;
+  }
+
+  return 1;
+
+err:
+  OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+  return 0;
+}
+
+int X509_REQ_print(BIO *bio, X509_REQ *req) {
+  return X509_REQ_print_ex(bio, req, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c.grpc_back
new file mode 100644
index 0000000..2fd36f8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_req.c.grpc_back	
@@ -0,0 +1,244 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl/bn.h>
+#include <openssl/buffer.h>
+#include <openssl/err.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+
+int X509_REQ_print_fp(FILE *fp, X509_REQ *x) {
+  BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);
+  if (bio == NULL) {
+    OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+    return 0;
+  }
+  int ret = X509_REQ_print(bio, x);
+  BIO_free(bio);
+  return ret;
+}
+
+int X509_REQ_print_ex(BIO *bio, X509_REQ *x, unsigned long nmflags,
+                      unsigned long cflag) {
+  long l;
+  EVP_PKEY *pkey;
+  STACK_OF(X509_ATTRIBUTE) * sk;
+  char mlch = ' ';
+
+  int nmindent = 0;
+
+  if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
+    mlch = '\n';
+    nmindent = 12;
+  }
+
+  if (nmflags == X509_FLAG_COMPAT) {
+    nmindent = 16;
+  }
+
+  X509_REQ_INFO *ri = x->req_info;
+  if (!(cflag & X509_FLAG_NO_HEADER)) {
+    if (BIO_write(bio, "Certificate Request:\n", 21) <= 0 ||
+        BIO_write(bio, "    Data:\n", 10) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_VERSION)) {
+    l = X509_REQ_get_version(x);
+    if (BIO_printf(bio, "%8sVersion: %ld (0x%lx)\n", "", l + 1, l) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_SUBJECT)) {
+    if (BIO_printf(bio, "        Subject:%c", mlch) <= 0 ||
+        X509_NAME_print_ex(bio, ri->subject, nmindent, nmflags) < 0 ||
+        BIO_write(bio, "\n", 1) <= 0) {
+      goto err;
+    }
+  }
+  if (!(cflag & X509_FLAG_NO_PUBKEY)) {
+    if (BIO_write(bio, "        Subject Public Key Info:\n", 33) <= 0 ||
+        BIO_printf(bio, "%12sPublic Key Algorithm: ", "") <= 0 ||
+        i2a_ASN1_OBJECT(bio, ri->pubkey->algor->algorithm) <= 0 ||
+        BIO_puts(bio, "\n") <= 0) {
+      goto err;
+    }
+
+    pkey = X509_REQ_get_pubkey(x);
+    if (pkey == NULL) {
+      BIO_printf(bio, "%12sUnable to load Public Key\n", "");
+      ERR_print_errors(bio);
+    } else {
+      EVP_PKEY_print_public(bio, pkey, 16, NULL);
+      EVP_PKEY_free(pkey);
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_ATTRIBUTES)) {
+    if (BIO_printf(bio, "%8sAttributes:\n", "") <= 0) {
+      goto err;
+    }
+
+    sk = x->req_info->attributes;
+    if (sk_X509_ATTRIBUTE_num(sk) == 0) {
+      if (BIO_printf(bio, "%12sa0:00\n", "") <= 0) {
+        goto err;
+      }
+    } else {
+      size_t i;
+      for (i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
+        X509_ATTRIBUTE *a = sk_X509_ATTRIBUTE_value(sk, i);
+        ASN1_OBJECT *aobj = X509_ATTRIBUTE_get0_object(a);
+
+        if (X509_REQ_extension_nid(OBJ_obj2nid(aobj))) {
+          continue;
+        }
+
+        if (BIO_printf(bio, "%12s", "") <= 0) {
+          goto err;
+        }
+
+        const int num_attrs = X509_ATTRIBUTE_count(a);
+        const int obj_str_len = i2a_ASN1_OBJECT(bio, aobj);
+        if (obj_str_len <= 0) {
+          if (BIO_puts(bio, "(Unable to print attribute ID.)\n") < 0) {
+            goto err;
+          } else {
+            continue;
+          }
+        }
+
+        int j;
+        for (j = 0; j < num_attrs; j++) {
+          const ASN1_TYPE *at = X509_ATTRIBUTE_get0_type(a, j);
+          const int type = at->type;
+          ASN1_BIT_STRING *bs = at->value.asn1_string;
+
+          int k;
+          for (k = 25 - obj_str_len; k > 0; k--) {
+            if (BIO_write(bio, " ", 1) != 1) {
+              goto err;
+            }
+          }
+
+          if (BIO_puts(bio, ":") <= 0) {
+            goto err;
+          }
+
+          if (type == V_ASN1_PRINTABLESTRING ||
+              type == V_ASN1_UTF8STRING ||
+              type == V_ASN1_IA5STRING ||
+              type == V_ASN1_T61STRING) {
+            if (BIO_write(bio, (char *)bs->data, bs->length) != bs->length) {
+              goto err;
+            }
+            BIO_puts(bio, "\n");
+          } else {
+            BIO_puts(bio, "unable to print attribute\n");
+          }
+        }
+      }
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_EXTENSIONS)) {
+    STACK_OF(X509_EXTENSION) *exts = X509_REQ_get_extensions(x);
+    if (exts) {
+      BIO_printf(bio, "%8sRequested Extensions:\n", "");
+
+      size_t i;
+      for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
+        X509_EXTENSION *ex = sk_X509_EXTENSION_value(exts, i);
+        if (BIO_printf(bio, "%12s", "") <= 0) {
+          goto err;
+        }
+        ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
+        i2a_ASN1_OBJECT(bio, obj);
+        const int is_critical = X509_EXTENSION_get_critical(ex);
+        if (BIO_printf(bio, ": %s\n", is_critical ? "critical" : "") <= 0) {
+          goto err;
+        }
+        if (!X509V3_EXT_print(bio, ex, cflag, 16)) {
+          BIO_printf(bio, "%16s", "");
+          ASN1_STRING_print(bio, X509_EXTENSION_get_data(ex));
+        }
+        if (BIO_write(bio, "\n", 1) <= 0) {
+          goto err;
+        }
+      }
+      sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+    }
+  }
+
+  if (!(cflag & X509_FLAG_NO_SIGDUMP) &&
+      !X509_signature_print(bio, x->sig_alg, x->signature)) {
+    goto err;
+  }
+
+  return 1;
+
+err:
+  OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+  return 0;
+}
+
+int X509_REQ_print(BIO *bio, X509_REQ *req) {
+  return X509_REQ_print_ex(bio, req, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c
new file mode 100644
index 0000000..a7f2f81
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c	
@@ -0,0 +1,544 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "internal.h"
+
+
+#ifndef OPENSSL_NO_FP_API
+int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
+                     unsigned long cflag)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = X509_print_ex(b, x, nmflag, cflag);
+    BIO_free(b);
+    return ret;
+}
+
+int X509_print_fp(FILE *fp, X509 *x)
+{
+    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
+#endif
+
+int X509_print(BIO *bp, X509 *x)
+{
+    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
+
+int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
+                  unsigned long cflag)
+{
+    long l;
+    int ret = 0, i;
+    char *m = NULL, mlch = ' ';
+    int nmindent = 0;
+    X509_CINF *ci;
+    ASN1_INTEGER *bs;
+    EVP_PKEY *pkey = NULL;
+    const char *neg;
+
+    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
+        mlch = '\n';
+        nmindent = 12;
+    }
+
+    if (nmflags == X509_FLAG_COMPAT)
+        nmindent = 16;
+
+    ci = x->cert_info;
+    if (!(cflag & X509_FLAG_NO_HEADER)) {
+        if (BIO_write(bp, "Certificate:\n", 13) <= 0)
+            goto err;
+        if (BIO_write(bp, "    Data:\n", 10) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_VERSION)) {
+        l = X509_get_version(x);
+        if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_SERIAL)) {
+
+        if (BIO_write(bp, "        Serial Number:", 22) <= 0)
+            goto err;
+
+        bs = X509_get_serialNumber(x);
+        if (bs->length < (int)sizeof(long)
+            || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) {
+            l = ASN1_INTEGER_get(bs);
+            if (bs->type == V_ASN1_NEG_INTEGER) {
+                l = -l;
+                neg = "-";
+            } else
+                neg = "";
+            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
+                goto err;
+        } else {
+            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
+            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
+                goto err;
+
+            for (i = 0; i < bs->length; i++) {
+                if (BIO_printf(bp, "%02x%c", bs->data[i],
+                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
+                    goto err;
+            }
+        }
+
+    }
+
+    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
+        if (X509_signature_print(bp, ci->signature, NULL) <= 0)
+            goto err;
+    }
+
+    if (!(cflag & X509_FLAG_NO_ISSUER)) {
+        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
+            goto err;
+        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
+            < 0)
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
+        if (BIO_write(bp, "        Validity\n", 17) <= 0)
+            goto err;
+        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
+            goto err;
+        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
+            goto err;
+        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
+            goto err;
+        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
+        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
+            goto err;
+        if (X509_NAME_print_ex
+            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
+        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
+            goto err;
+        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
+            goto err;
+        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
+            goto err;
+        if (BIO_puts(bp, "\n") <= 0)
+            goto err;
+
+        pkey = X509_get_pubkey(x);
+        if (pkey == NULL) {
+            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
+            ERR_print_errors(bp);
+        } else {
+            EVP_PKEY_print_public(bp, pkey, 16, NULL);
+            EVP_PKEY_free(pkey);
+        }
+    }
+
+    if (!(cflag & X509_FLAG_NO_IDS)) {
+        if (ci->issuerUID) {
+            if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
+                goto err;
+            if (!X509_signature_dump(bp, ci->issuerUID, 12))
+                goto err;
+        }
+        if (ci->subjectUID) {
+            if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
+                goto err;
+            if (!X509_signature_dump(bp, ci->subjectUID, 12))
+                goto err;
+        }
+    }
+
+    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
+        X509V3_extensions_print(bp, "X509v3 extensions",
+                                ci->extensions, cflag, 8);
+
+    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
+        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_AUX)) {
+        if (!X509_CERT_AUX_print(bp, x->aux, 0))
+            goto err;
+    }
+    ret = 1;
+ err:
+    if (m != NULL)
+        OPENSSL_free(m);
+    return (ret);
+}
+
+int X509_ocspid_print(BIO *bp, X509 *x)
+{
+    unsigned char *der = NULL;
+    unsigned char *dertmp;
+    int derlen;
+    int i;
+    unsigned char SHA1md[SHA_DIGEST_LENGTH];
+
+    /*
+     * display the hash of the subject as it would appear in OCSP requests
+     */
+    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
+        goto err;
+    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
+    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
+        goto err;
+    i2d_X509_NAME(x->cert_info->subject, &dertmp);
+
+    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
+        goto err;
+    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
+        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
+            goto err;
+    }
+    OPENSSL_free(der);
+    der = NULL;
+
+    /*
+     * display the hash of the public key as it would appear in OCSP requests
+     */
+    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
+        goto err;
+
+    if (!EVP_Digest(x->cert_info->key->public_key->data,
+                    x->cert_info->key->public_key->length,
+                    SHA1md, NULL, EVP_sha1(), NULL))
+        goto err;
+    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
+        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
+            goto err;
+    }
+    BIO_printf(bp, "\n");
+
+    return (1);
+ err:
+    if (der != NULL)
+        OPENSSL_free(der);
+    return (0);
+}
+
+int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
+                         const ASN1_STRING *sig)
+{
+    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
+        return 0;
+    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
+        return 0;
+
+    /* RSA-PSS signatures have parameters to print. */
+    int sig_nid = OBJ_obj2nid(sigalg->algorithm);
+    if (sig_nid == NID_rsassaPss &&
+        !x509_print_rsa_pss_params(bp, sigalg, 9, 0)) {
+        return 0;
+    }
+
+    if (sig)
+        return X509_signature_dump(bp, sig, 9);
+    else if (BIO_puts(bp, "\n") <= 0)
+        return 0;
+    return 1;
+}
+
+int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
+{
+    int i, n;
+    char buf[80];
+    const char *p;
+
+    if (v == NULL)
+        return (0);
+    n = 0;
+    p = (const char *)v->data;
+    for (i = 0; i < v->length; i++) {
+        if ((p[i] > '~') || ((p[i] < ' ') &&
+                             (p[i] != '\n') && (p[i] != '\r')))
+            buf[n] = '.';
+        else
+            buf[n] = p[i];
+        n++;
+        if (n >= 80) {
+            if (BIO_write(bp, buf, n) <= 0)
+                return (0);
+            n = 0;
+        }
+    }
+    if (n > 0)
+        if (BIO_write(bp, buf, n) <= 0)
+            return (0);
+    return (1);
+}
+
+int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
+{
+    if (tm->type == V_ASN1_UTCTIME)
+        return ASN1_UTCTIME_print(bp, tm);
+    if (tm->type == V_ASN1_GENERALIZEDTIME)
+        return ASN1_GENERALIZEDTIME_print(bp, tm);
+    BIO_write(bp, "Bad time value", 14);
+    return (0);
+}
+
+static const char *const mon[12] = {
+    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
+{
+    char *v;
+    int gmt = 0;
+    int i;
+    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
+    char *f = NULL;
+    int f_len = 0;
+
+    i = tm->length;
+    v = (char *)tm->data;
+
+    if (i < 12)
+        goto err;
+    if (v[i - 1] == 'Z')
+        gmt = 1;
+    for (i = 0; i < 12; i++)
+        if ((v[i] > '9') || (v[i] < '0'))
+            goto err;
+    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + (v[2] - '0') * 10 + (v[3] -
+                                                                        '0');
+    M = (v[4] - '0') * 10 + (v[5] - '0');
+    if ((M > 12) || (M < 1))
+        goto err;
+    d = (v[6] - '0') * 10 + (v[7] - '0');
+    h = (v[8] - '0') * 10 + (v[9] - '0');
+    m = (v[10] - '0') * 10 + (v[11] - '0');
+    if (tm->length >= 14 &&
+        (v[12] >= '0') && (v[12] <= '9') &&
+        (v[13] >= '0') && (v[13] <= '9')) {
+        s = (v[12] - '0') * 10 + (v[13] - '0');
+        /* Check for fractions of seconds. */
+        if (tm->length >= 15 && v[14] == '.') {
+            int l = tm->length;
+            f = &v[14];         /* The decimal point. */
+            f_len = 1;
+            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
+                ++f_len;
+        }
+    }
+
+    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
+                   mon[M - 1], d, h, m, s, f_len, f, y,
+                   (gmt) ? " GMT" : "") <= 0)
+        return (0);
+    else
+        return (1);
+ err:
+    BIO_write(bp, "Bad time value", 14);
+    return (0);
+}
+
+// consume_two_digits is a helper function for ASN1_UTCTIME_print. If |*v|,
+// assumed to be |*len| bytes long, has two leading digits, updates |*out| with
+// their value, updates |v| and |len|, and returns one. Otherwise, returns
+// zero.
+static int consume_two_digits(int* out, const char **v, int *len) {
+  if (*len < 2|| !isdigit((*v)[0]) || !isdigit((*v)[1])) {
+    return 0;
+  }
+  *out = ((*v)[0] - '0') * 10 + ((*v)[1] - '0');
+  *len -= 2;
+  *v += 2;
+  return 1;
+}
+
+// consume_zulu_timezone is a helper function for ASN1_UTCTIME_print. If |*v|,
+// assumed to be |*len| bytes long, starts with "Z" then it updates |*v| and
+// |*len| and returns one. Otherwise returns zero.
+static int consume_zulu_timezone(const char **v, int *len) {
+  if (*len == 0 || (*v)[0] != 'Z') {
+    return 0;
+  }
+
+  *len -= 1;
+  *v += 1;
+  return 1;
+}
+
+int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) {
+  const char *v = (const char *)tm->data;
+  int len = tm->length;
+  int Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0;
+
+  // YYMMDDhhmm are required to be present.
+  if (!consume_two_digits(&Y, &v, &len) ||
+      !consume_two_digits(&M, &v, &len) ||
+      !consume_two_digits(&D, &v, &len) ||
+      !consume_two_digits(&h, &v, &len) ||
+      !consume_two_digits(&m, &v, &len)) {
+    goto err;
+  }
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires seconds
+  // to be present, but historically this code has forgiven its absence.
+  consume_two_digits(&s, &v, &len);
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, specifies this
+  // interpretation of the year.
+  if (Y < 50) {
+    Y += 2000;
+  } else {
+    Y += 1900;
+  }
+  if (M > 12 || M == 0) {
+    goto err;
+  }
+  if (D > 31 || D == 0) {
+    goto err;
+  }
+  if (h > 23 || m > 59 || s > 60) {
+    goto err;
+  }
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires the "Z"
+  // to be present, but historically this code has forgiven its absence.
+  const int is_gmt = consume_zulu_timezone(&v, &len);
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, does not permit
+  // the specification of timezones using the +hhmm / -hhmm syntax, which is
+  // the only other thing that might legitimately be found at the end.
+  if (len) {
+    goto err;
+  }
+
+  return BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", mon[M - 1], D, h, m, s, Y,
+                    is_gmt ? " GMT" : "") > 0;
+
+err:
+  BIO_write(bp, "Bad time value", 14);
+  return 0;
+}
+
+int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
+{
+    char *s, *c, *b;
+    int ret = 0, l, i;
+
+    l = 80 - 2 - obase;
+
+    b = X509_NAME_oneline(name, NULL, 0);
+    if (!b)
+        return 0;
+    if (!*b) {
+        OPENSSL_free(b);
+        return 1;
+    }
+    s = b + 1;                  /* skip the first slash */
+
+    c = s;
+    for (;;) {
+        if (((*s == '/') &&
+             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
+                                                 ((s[2] >= 'A')
+                                                  && (s[2] <= 'Z')
+                                                  && (s[3] == '='))
+              ))) || (*s == '\0')) {
+            i = s - c;
+            if (BIO_write(bp, c, i) != i)
+                goto err;
+            c = s + 1;          /* skip following slash */
+            if (*s != '\0') {
+                if (BIO_write(bp, ", ", 2) != 2)
+                    goto err;
+            }
+            l--;
+        }
+        if (*s == '\0')
+            break;
+        s++;
+        l--;
+    }
+
+    ret = 1;
+    if (0) {
+ err:
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+    }
+    OPENSSL_free(b);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c.grpc_back
new file mode 100644
index 0000000..e45a765
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509.c.grpc_back	
@@ -0,0 +1,544 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "internal.h"
+
+
+#ifndef OPENSSL_NO_FP_API
+int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
+                     unsigned long cflag)
+{
+    BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
+    if (b == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+        return 0;
+    }
+    int ret = X509_print_ex(b, x, nmflag, cflag);
+    BIO_free(b);
+    return ret;
+}
+
+int X509_print_fp(FILE *fp, X509 *x)
+{
+    return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
+#endif
+
+int X509_print(BIO *bp, X509 *x)
+{
+    return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+}
+
+int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
+                  unsigned long cflag)
+{
+    long l;
+    int ret = 0, i;
+    char *m = NULL, mlch = ' ';
+    int nmindent = 0;
+    X509_CINF *ci;
+    ASN1_INTEGER *bs;
+    EVP_PKEY *pkey = NULL;
+    const char *neg;
+
+    if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
+        mlch = '\n';
+        nmindent = 12;
+    }
+
+    if (nmflags == X509_FLAG_COMPAT)
+        nmindent = 16;
+
+    ci = x->cert_info;
+    if (!(cflag & X509_FLAG_NO_HEADER)) {
+        if (BIO_write(bp, "Certificate:\n", 13) <= 0)
+            goto err;
+        if (BIO_write(bp, "    Data:\n", 10) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_VERSION)) {
+        l = X509_get_version(x);
+        if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_SERIAL)) {
+
+        if (BIO_write(bp, "        Serial Number:", 22) <= 0)
+            goto err;
+
+        bs = X509_get_serialNumber(x);
+        if (bs->length < (int)sizeof(long)
+            || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) {
+            l = ASN1_INTEGER_get(bs);
+            if (bs->type == V_ASN1_NEG_INTEGER) {
+                l = -l;
+                neg = "-";
+            } else
+                neg = "";
+            if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
+                goto err;
+        } else {
+            neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
+            if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
+                goto err;
+
+            for (i = 0; i < bs->length; i++) {
+                if (BIO_printf(bp, "%02x%c", bs->data[i],
+                               ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
+                    goto err;
+            }
+        }
+
+    }
+
+    if (!(cflag & X509_FLAG_NO_SIGNAME)) {
+        if (X509_signature_print(bp, ci->signature, NULL) <= 0)
+            goto err;
+    }
+
+    if (!(cflag & X509_FLAG_NO_ISSUER)) {
+        if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
+            goto err;
+        if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
+            < 0)
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_VALIDITY)) {
+        if (BIO_write(bp, "        Validity\n", 17) <= 0)
+            goto err;
+        if (BIO_write(bp, "            Not Before: ", 24) <= 0)
+            goto err;
+        if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
+            goto err;
+        if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
+            goto err;
+        if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_SUBJECT)) {
+        if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
+            goto err;
+        if (X509_NAME_print_ex
+            (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
+            goto err;
+        if (BIO_write(bp, "\n", 1) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_PUBKEY)) {
+        if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
+            goto err;
+        if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
+            goto err;
+        if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
+            goto err;
+        if (BIO_puts(bp, "\n") <= 0)
+            goto err;
+
+        pkey = X509_get_pubkey(x);
+        if (pkey == NULL) {
+            BIO_printf(bp, "%12sUnable to load Public Key\n", "");
+            ERR_print_errors(bp);
+        } else {
+            EVP_PKEY_print_public(bp, pkey, 16, NULL);
+            EVP_PKEY_free(pkey);
+        }
+    }
+
+    if (!(cflag & X509_FLAG_NO_IDS)) {
+        if (ci->issuerUID) {
+            if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
+                goto err;
+            if (!X509_signature_dump(bp, ci->issuerUID, 12))
+                goto err;
+        }
+        if (ci->subjectUID) {
+            if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
+                goto err;
+            if (!X509_signature_dump(bp, ci->subjectUID, 12))
+                goto err;
+        }
+    }
+
+    if (!(cflag & X509_FLAG_NO_EXTENSIONS))
+        X509V3_extensions_print(bp, "X509v3 extensions",
+                                ci->extensions, cflag, 8);
+
+    if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
+        if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
+            goto err;
+    }
+    if (!(cflag & X509_FLAG_NO_AUX)) {
+        if (!X509_CERT_AUX_print(bp, x->aux, 0))
+            goto err;
+    }
+    ret = 1;
+ err:
+    if (m != NULL)
+        OPENSSL_free(m);
+    return (ret);
+}
+
+int X509_ocspid_print(BIO *bp, X509 *x)
+{
+    unsigned char *der = NULL;
+    unsigned char *dertmp;
+    int derlen;
+    int i;
+    unsigned char SHA1md[SHA_DIGEST_LENGTH];
+
+    /*
+     * display the hash of the subject as it would appear in OCSP requests
+     */
+    if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
+        goto err;
+    derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
+    if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
+        goto err;
+    i2d_X509_NAME(x->cert_info->subject, &dertmp);
+
+    if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
+        goto err;
+    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
+        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
+            goto err;
+    }
+    OPENSSL_free(der);
+    der = NULL;
+
+    /*
+     * display the hash of the public key as it would appear in OCSP requests
+     */
+    if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
+        goto err;
+
+    if (!EVP_Digest(x->cert_info->key->public_key->data,
+                    x->cert_info->key->public_key->length,
+                    SHA1md, NULL, EVP_sha1(), NULL))
+        goto err;
+    for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
+        if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
+            goto err;
+    }
+    BIO_printf(bp, "\n");
+
+    return (1);
+ err:
+    if (der != NULL)
+        OPENSSL_free(der);
+    return (0);
+}
+
+int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
+                         const ASN1_STRING *sig)
+{
+    if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
+        return 0;
+    if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
+        return 0;
+
+    /* RSA-PSS signatures have parameters to print. */
+    int sig_nid = OBJ_obj2nid(sigalg->algorithm);
+    if (sig_nid == NID_rsassaPss &&
+        !x509_print_rsa_pss_params(bp, sigalg, 9, 0)) {
+        return 0;
+    }
+
+    if (sig)
+        return X509_signature_dump(bp, sig, 9);
+    else if (BIO_puts(bp, "\n") <= 0)
+        return 0;
+    return 1;
+}
+
+int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
+{
+    int i, n;
+    char buf[80];
+    const char *p;
+
+    if (v == NULL)
+        return (0);
+    n = 0;
+    p = (const char *)v->data;
+    for (i = 0; i < v->length; i++) {
+        if ((p[i] > '~') || ((p[i] < ' ') &&
+                             (p[i] != '\n') && (p[i] != '\r')))
+            buf[n] = '.';
+        else
+            buf[n] = p[i];
+        n++;
+        if (n >= 80) {
+            if (BIO_write(bp, buf, n) <= 0)
+                return (0);
+            n = 0;
+        }
+    }
+    if (n > 0)
+        if (BIO_write(bp, buf, n) <= 0)
+            return (0);
+    return (1);
+}
+
+int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
+{
+    if (tm->type == V_ASN1_UTCTIME)
+        return ASN1_UTCTIME_print(bp, tm);
+    if (tm->type == V_ASN1_GENERALIZEDTIME)
+        return ASN1_GENERALIZEDTIME_print(bp, tm);
+    BIO_write(bp, "Bad time value", 14);
+    return (0);
+}
+
+static const char *const mon[12] = {
+    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
+{
+    char *v;
+    int gmt = 0;
+    int i;
+    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
+    char *f = NULL;
+    int f_len = 0;
+
+    i = tm->length;
+    v = (char *)tm->data;
+
+    if (i < 12)
+        goto err;
+    if (v[i - 1] == 'Z')
+        gmt = 1;
+    for (i = 0; i < 12; i++)
+        if ((v[i] > '9') || (v[i] < '0'))
+            goto err;
+    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + (v[2] - '0') * 10 + (v[3] -
+                                                                        '0');
+    M = (v[4] - '0') * 10 + (v[5] - '0');
+    if ((M > 12) || (M < 1))
+        goto err;
+    d = (v[6] - '0') * 10 + (v[7] - '0');
+    h = (v[8] - '0') * 10 + (v[9] - '0');
+    m = (v[10] - '0') * 10 + (v[11] - '0');
+    if (tm->length >= 14 &&
+        (v[12] >= '0') && (v[12] <= '9') &&
+        (v[13] >= '0') && (v[13] <= '9')) {
+        s = (v[12] - '0') * 10 + (v[13] - '0');
+        /* Check for fractions of seconds. */
+        if (tm->length >= 15 && v[14] == '.') {
+            int l = tm->length;
+            f = &v[14];         /* The decimal point. */
+            f_len = 1;
+            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
+                ++f_len;
+        }
+    }
+
+    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
+                   mon[M - 1], d, h, m, s, f_len, f, y,
+                   (gmt) ? " GMT" : "") <= 0)
+        return (0);
+    else
+        return (1);
+ err:
+    BIO_write(bp, "Bad time value", 14);
+    return (0);
+}
+
+// consume_two_digits is a helper function for ASN1_UTCTIME_print. If |*v|,
+// assumed to be |*len| bytes long, has two leading digits, updates |*out| with
+// their value, updates |v| and |len|, and returns one. Otherwise, returns
+// zero.
+static int consume_two_digits(int* out, const char **v, int *len) {
+  if (*len < 2|| !isdigit((*v)[0]) || !isdigit((*v)[1])) {
+    return 0;
+  }
+  *out = ((*v)[0] - '0') * 10 + ((*v)[1] - '0');
+  *len -= 2;
+  *v += 2;
+  return 1;
+}
+
+// consume_zulu_timezone is a helper function for ASN1_UTCTIME_print. If |*v|,
+// assumed to be |*len| bytes long, starts with "Z" then it updates |*v| and
+// |*len| and returns one. Otherwise returns zero.
+static int consume_zulu_timezone(const char **v, int *len) {
+  if (*len == 0 || (*v)[0] != 'Z') {
+    return 0;
+  }
+
+  *len -= 1;
+  *v += 1;
+  return 1;
+}
+
+int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) {
+  const char *v = (const char *)tm->data;
+  int len = tm->length;
+  int Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0;
+
+  // YYMMDDhhmm are required to be present.
+  if (!consume_two_digits(&Y, &v, &len) ||
+      !consume_two_digits(&M, &v, &len) ||
+      !consume_two_digits(&D, &v, &len) ||
+      !consume_two_digits(&h, &v, &len) ||
+      !consume_two_digits(&m, &v, &len)) {
+    goto err;
+  }
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires seconds
+  // to be present, but historically this code has forgiven its absence.
+  consume_two_digits(&s, &v, &len);
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, specifies this
+  // interpretation of the year.
+  if (Y < 50) {
+    Y += 2000;
+  } else {
+    Y += 1900;
+  }
+  if (M > 12 || M == 0) {
+    goto err;
+  }
+  if (D > 31 || D == 0) {
+    goto err;
+  }
+  if (h > 23 || m > 59 || s > 60) {
+    goto err;
+  }
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires the "Z"
+  // to be present, but historically this code has forgiven its absence.
+  const int is_gmt = consume_zulu_timezone(&v, &len);
+
+  // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, does not permit
+  // the specification of timezones using the +hhmm / -hhmm syntax, which is
+  // the only other thing that might legitimately be found at the end.
+  if (len) {
+    goto err;
+  }
+
+  return BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", mon[M - 1], D, h, m, s, Y,
+                    is_gmt ? " GMT" : "") > 0;
+
+err:
+  BIO_write(bp, "Bad time value", 14);
+  return 0;
+}
+
+int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
+{
+    char *s, *c, *b;
+    int ret = 0, l, i;
+
+    l = 80 - 2 - obase;
+
+    b = X509_NAME_oneline(name, NULL, 0);
+    if (!b)
+        return 0;
+    if (!*b) {
+        OPENSSL_free(b);
+        return 1;
+    }
+    s = b + 1;                  /* skip the first slash */
+
+    c = s;
+    for (;;) {
+        if (((*s == '/') &&
+             ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
+                                                 ((s[2] >= 'A')
+                                                  && (s[2] <= 'Z')
+                                                  && (s[3] == '='))
+              ))) || (*s == '\0')) {
+            i = s - c;
+            if (BIO_write(bp, c, i) != i)
+                goto err;
+            c = s + 1;          /* skip following slash */
+            if (*s != '\0') {
+                if (BIO_write(bp, ", ", 2) != 2)
+                    goto err;
+            }
+            l--;
+        }
+        if (*s == '\0')
+            break;
+        s++;
+        l--;
+    }
+
+    ret = 1;
+    if (0) {
+ err:
+        OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
+    }
+    OPENSSL_free(b);
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c
new file mode 100644
index 0000000..89d7fce
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+/* X509_CERT_AUX and string set routines */
+
+int X509_CERT_AUX_print(BIO *out, X509_CERT_AUX *aux, int indent)
+{
+    char oidstr[80], first;
+    size_t i;
+    int j;
+    if (!aux)
+        return 1;
+    if (aux->trust) {
+        first = 1;
+        BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
+        for (i = 0; i < sk_ASN1_OBJECT_num(aux->trust); i++) {
+            if (!first)
+                BIO_puts(out, ", ");
+            else
+                first = 0;
+            OBJ_obj2txt(oidstr, sizeof oidstr,
+                        sk_ASN1_OBJECT_value(aux->trust, i), 0);
+            BIO_puts(out, oidstr);
+        }
+        BIO_puts(out, "\n");
+    } else
+        BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
+    if (aux->reject) {
+        first = 1;
+        BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
+        for (i = 0; i < sk_ASN1_OBJECT_num(aux->reject); i++) {
+            if (!first)
+                BIO_puts(out, ", ");
+            else
+                first = 0;
+            OBJ_obj2txt(oidstr, sizeof oidstr,
+                        sk_ASN1_OBJECT_value(aux->reject, i), 0);
+            BIO_puts(out, oidstr);
+        }
+        BIO_puts(out, "\n");
+    } else
+        BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
+    if (aux->alias)
+        BIO_printf(out, "%*sAlias: %s\n", indent, "", aux->alias->data);
+    if (aux->keyid) {
+        BIO_printf(out, "%*sKey Id: ", indent, "");
+        for (j = 0; j < aux->keyid->length; j++)
+            BIO_printf(out, "%s%02X", j ? ":" : "", aux->keyid->data[j]);
+        BIO_write(out, "\n", 1);
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c.grpc_back
new file mode 100644
index 0000000..5436828
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/t_x509a.c.grpc_back	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+/* X509_CERT_AUX and string set routines */
+
+int X509_CERT_AUX_print(BIO *out, X509_CERT_AUX *aux, int indent)
+{
+    char oidstr[80], first;
+    size_t i;
+    int j;
+    if (!aux)
+        return 1;
+    if (aux->trust) {
+        first = 1;
+        BIO_printf(out, "%*sTrusted Uses:\n%*s", indent, "", indent + 2, "");
+        for (i = 0; i < sk_ASN1_OBJECT_num(aux->trust); i++) {
+            if (!first)
+                BIO_puts(out, ", ");
+            else
+                first = 0;
+            OBJ_obj2txt(oidstr, sizeof oidstr,
+                        sk_ASN1_OBJECT_value(aux->trust, i), 0);
+            BIO_puts(out, oidstr);
+        }
+        BIO_puts(out, "\n");
+    } else
+        BIO_printf(out, "%*sNo Trusted Uses.\n", indent, "");
+    if (aux->reject) {
+        first = 1;
+        BIO_printf(out, "%*sRejected Uses:\n%*s", indent, "", indent + 2, "");
+        for (i = 0; i < sk_ASN1_OBJECT_num(aux->reject); i++) {
+            if (!first)
+                BIO_puts(out, ", ");
+            else
+                first = 0;
+            OBJ_obj2txt(oidstr, sizeof oidstr,
+                        sk_ASN1_OBJECT_value(aux->reject, i), 0);
+            BIO_puts(out, oidstr);
+        }
+        BIO_puts(out, "\n");
+    } else
+        BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
+    if (aux->alias)
+        BIO_printf(out, "%*sAlias: %s\n", indent, "", aux->alias->data);
+    if (aux->keyid) {
+        BIO_printf(out, "%*sKey Id: ", indent, "");
+        for (j = 0; j < aux->keyid->length; j++)
+            BIO_printf(out, "%s%02X", j ? ":" : "", aux->keyid->data[j]);
+        BIO_write(out, "\n", 1);
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h
new file mode 100644
index 0000000..53b4a0d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h	
@@ -0,0 +1,71 @@
+/* vpm_int.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2013.
+ */
+/* ====================================================================
+ * Copyright (c) 2013 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+/* internal only structure to hold additional X509_VERIFY_PARAM data */
+
+struct X509_VERIFY_PARAM_ID_st {
+    STACK_OF(OPENSSL_STRING) *hosts; /* Set of acceptable names */
+    unsigned int hostflags;     /* Flags to control matching features */
+    char *peername;             /* Matching hostname in peer certificate */
+    char *email;                /* If not NULL email address to match */
+    size_t emaillen;
+    unsigned char *ip;          /* If not NULL IP address to match */
+    size_t iplen;               /* Length of IP address */
+    unsigned char poison;       /* Fail all verifications */
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h.grpc_back
new file mode 100644
index 0000000..53b4a0d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/vpm_int.h.grpc_back	
@@ -0,0 +1,71 @@
+/* vpm_int.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2013.
+ */
+/* ====================================================================
+ * Copyright (c) 2013 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+/* internal only structure to hold additional X509_VERIFY_PARAM data */
+
+struct X509_VERIFY_PARAM_ID_st {
+    STACK_OF(OPENSSL_STRING) *hosts; /* Set of acceptable names */
+    unsigned int hostflags;     /* Flags to control matching features */
+    char *peername;             /* Matching hostname in peer certificate */
+    char *email;                /* If not NULL email address to match */
+    size_t emaillen;
+    unsigned char *ip;          /* If not NULL IP address to match */
+    size_t iplen;               /* Length of IP address */
+    unsigned char poison;       /* Fail all verifications */
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c
new file mode 100644
index 0000000..fd217c9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c	
@@ -0,0 +1,157 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+
+/* |X509_R_UNSUPPORTED_ALGORITHM| is no longer emitted, but continue to define
+ * it to avoid downstream churn. */
+OPENSSL_DECLARE_ERROR_REASON(X509, UNSUPPORTED_ALGORITHM)
+
+int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, int version,
+                    int ptype, void *pval, uint8_t *penc, int penclen) {
+  uint8_t **ppenc = NULL;
+  if (version >= 0) {
+    if (!ASN1_INTEGER_set(priv->version, version)) {
+      return 0;
+    }
+  }
+
+  if (penc) {
+    int pmtype;
+    ASN1_OCTET_STRING *oct;
+
+    oct = ASN1_OCTET_STRING_new();
+    if (!oct) {
+      return 0;
+    }
+    oct->data = penc;
+    ppenc = &oct->data;
+    oct->length = penclen;
+    if (priv->broken == PKCS8_NO_OCTET) {
+      pmtype = V_ASN1_SEQUENCE;
+    } else {
+      pmtype = V_ASN1_OCTET_STRING;
+    }
+    ASN1_TYPE_set(priv->pkey, pmtype, oct);
+  }
+
+  if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval)) {
+    /* If call fails do not swallow 'enc' */
+    if (ppenc) {
+      *ppenc = NULL;
+    }
+    return 0;
+  }
+
+  return 1;
+}
+
+int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg, const uint8_t **pk, int *ppklen,
+                    X509_ALGOR **pa, PKCS8_PRIV_KEY_INFO *p8) {
+  if (ppkalg) {
+    *ppkalg = p8->pkeyalg->algorithm;
+  }
+
+  if (p8->pkey->type == V_ASN1_OCTET_STRING) {
+    p8->broken = PKCS8_OK;
+    if (pk) {
+      *pk = p8->pkey->value.octet_string->data;
+      *ppklen = p8->pkey->value.octet_string->length;
+    }
+  } else if (p8->pkey->type == V_ASN1_SEQUENCE) {
+    p8->broken = PKCS8_NO_OCTET;
+    if (pk) {
+      *pk = p8->pkey->value.sequence->data;
+      *ppklen = p8->pkey->value.sequence->length;
+    }
+  } else {
+    return 0;
+  }
+
+  if (pa) {
+    *pa = p8->pkeyalg;
+  }
+  return 1;
+}
+
+int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) {
+  const uint8_t *s;
+  int i, n;
+
+  n = sig->length;
+  s = sig->data;
+  for (i = 0; i < n; i++) {
+    if ((i % 18) == 0) {
+      if (BIO_write(bp, "\n", 1) <= 0 ||
+          BIO_indent(bp, indent, indent) <= 0) {
+        return 0;
+      }
+    }
+    if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0) {
+      return 0;
+    }
+  }
+  if (BIO_write(bp, "\n", 1) != 1) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c.grpc_back
new file mode 100644
index 0000000..188fd49
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509.c.grpc_back	
@@ -0,0 +1,157 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+
+/* |X509_R_UNSUPPORTED_ALGORITHM| is no longer emitted, but continue to define
+ * it to avoid downstream churn. */
+OPENSSL_DECLARE_ERROR_REASON(X509, UNSUPPORTED_ALGORITHM)
+
+int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, int version,
+                    int ptype, void *pval, uint8_t *penc, int penclen) {
+  uint8_t **ppenc = NULL;
+  if (version >= 0) {
+    if (!ASN1_INTEGER_set(priv->version, version)) {
+      return 0;
+    }
+  }
+
+  if (penc) {
+    int pmtype;
+    ASN1_OCTET_STRING *oct;
+
+    oct = ASN1_OCTET_STRING_new();
+    if (!oct) {
+      return 0;
+    }
+    oct->data = penc;
+    ppenc = &oct->data;
+    oct->length = penclen;
+    if (priv->broken == PKCS8_NO_OCTET) {
+      pmtype = V_ASN1_SEQUENCE;
+    } else {
+      pmtype = V_ASN1_OCTET_STRING;
+    }
+    ASN1_TYPE_set(priv->pkey, pmtype, oct);
+  }
+
+  if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval)) {
+    /* If call fails do not swallow 'enc' */
+    if (ppenc) {
+      *ppenc = NULL;
+    }
+    return 0;
+  }
+
+  return 1;
+}
+
+int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg, const uint8_t **pk, int *ppklen,
+                    X509_ALGOR **pa, PKCS8_PRIV_KEY_INFO *p8) {
+  if (ppkalg) {
+    *ppkalg = p8->pkeyalg->algorithm;
+  }
+
+  if (p8->pkey->type == V_ASN1_OCTET_STRING) {
+    p8->broken = PKCS8_OK;
+    if (pk) {
+      *pk = p8->pkey->value.octet_string->data;
+      *ppklen = p8->pkey->value.octet_string->length;
+    }
+  } else if (p8->pkey->type == V_ASN1_SEQUENCE) {
+    p8->broken = PKCS8_NO_OCTET;
+    if (pk) {
+      *pk = p8->pkey->value.sequence->data;
+      *ppklen = p8->pkey->value.sequence->length;
+    }
+  } else {
+    return 0;
+  }
+
+  if (pa) {
+    *pa = p8->pkeyalg;
+  }
+  return 1;
+}
+
+int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) {
+  const uint8_t *s;
+  int i, n;
+
+  n = sig->length;
+  s = sig->data;
+  for (i = 0; i < n; i++) {
+    if ((i % 18) == 0) {
+      if (BIO_write(bp, "\n", 1) <= 0 ||
+          BIO_indent(bp, indent, indent) <= 0) {
+        return 0;
+      }
+    }
+    if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0) {
+      return 0;
+    }
+  }
+  if (BIO_write(bp, "\n", 1) != 1) {
+    return 0;
+  }
+
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c
new file mode 100644
index 0000000..9b5ee59
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c	
@@ -0,0 +1,381 @@
+/* crypto/x509/x509_att.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
+{
+    return sk_X509_ATTRIBUTE_num(x);
+}
+
+int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
+                           int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509at_get_attr_by_OBJ(x, obj, lastpos));
+}
+
+int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
+                           const ASN1_OBJECT *obj, int lastpos)
+{
+    int n;
+    X509_ATTRIBUTE *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_ATTRIBUTE_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
+        if (OBJ_cmp(ex->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
+{
+    if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
+        return NULL;
+    else
+        return sk_X509_ATTRIBUTE_value(x, loc);
+}
+
+X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
+{
+    X509_ATTRIBUTE *ret;
+
+    if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
+        return (NULL);
+    ret = sk_X509_ATTRIBUTE_delete(x, loc);
+    return (ret);
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
+                                           X509_ATTRIBUTE *attr)
+{
+    X509_ATTRIBUTE *new_attr = NULL;
+    STACK_OF(X509_ATTRIBUTE) *sk = NULL;
+
+    if (x == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        goto err2;
+    }
+
+    if (*x == NULL) {
+        if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
+            goto err;
+    } else
+        sk = *x;
+
+    if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
+        goto err2;
+    if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
+        goto err;
+    if (*x == NULL)
+        *x = sk;
+    return (sk);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ err2:
+    if (new_attr != NULL)
+        X509_ATTRIBUTE_free(new_attr);
+    if (sk != NULL)
+        sk_X509_ATTRIBUTE_free(sk);
+    return (NULL);
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, const ASN1_OBJECT *obj,
+                                                  int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, int nid, int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, const char *attrname,
+                                                  int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
+                              ASN1_OBJECT *obj, int lastpos, int type)
+{
+    int i;
+    X509_ATTRIBUTE *at;
+    i = X509at_get_attr_by_OBJ(x, obj, lastpos);
+    if (i == -1)
+        return NULL;
+    if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
+        return NULL;
+    at = X509at_get_attr(x, i);
+    if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
+        return NULL;
+    return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
+                                             int atrtype, const void *data,
+                                             int len)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return (NULL);
+    }
+    return X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
+                                             const ASN1_OBJECT *obj,
+                                             int atrtype, const void *data,
+                                             int len)
+{
+    X509_ATTRIBUTE *ret;
+
+    if ((attr == NULL) || (*attr == NULL)) {
+        if ((ret = X509_ATTRIBUTE_new()) == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return (NULL);
+        }
+    } else
+        ret = *attr;
+
+    if (!X509_ATTRIBUTE_set1_object(ret, obj))
+        goto err;
+    if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
+        goto err;
+
+    if ((attr != NULL) && (*attr == NULL))
+        *attr = ret;
+    return (ret);
+ err:
+    if ((attr == NULL) || (ret != *attr))
+        X509_ATTRIBUTE_free(ret);
+    return (NULL);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
+                                             const char *atrname, int type,
+                                             const unsigned char *bytes,
+                                             int len)
+{
+    ASN1_OBJECT *obj;
+    X509_ATTRIBUTE *nattr;
+
+    obj = OBJ_txt2obj(atrname, 0);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
+        ERR_add_error_data(2, "name=", atrname);
+        return (NULL);
+    }
+    nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
+    ASN1_OBJECT_free(obj);
+    return nattr;
+}
+
+int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
+{
+    if ((attr == NULL) || (obj == NULL))
+        return (0);
+    ASN1_OBJECT_free(attr->object);
+    attr->object = OBJ_dup(obj);
+    return attr->object != NULL;
+}
+
+int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
+                             const void *data, int len)
+{
+    ASN1_TYPE *ttmp = NULL;
+    ASN1_STRING *stmp = NULL;
+    int atype = 0;
+    if (!attr)
+        return 0;
+    if (attrtype & MBSTRING_FLAG) {
+        stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
+                                      OBJ_obj2nid(attr->object));
+        if (!stmp) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            return 0;
+        }
+        atype = stmp->type;
+    } else if (len != -1) {
+        if (!(stmp = ASN1_STRING_type_new(attrtype)))
+            goto err;
+        if (!ASN1_STRING_set(stmp, data, len))
+            goto err;
+        atype = attrtype;
+    }
+    if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
+        goto err;
+    attr->single = 0;
+    /*
+     * This is a bit naughty because the attribute should really have at
+     * least one value but some types use and zero length SET and require
+     * this.
+     */
+    if (attrtype == 0) {
+        ASN1_STRING_free(stmp);
+        return 1;
+    }
+    if (!(ttmp = ASN1_TYPE_new()))
+        goto err;
+    if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
+        if (!ASN1_TYPE_set1(ttmp, attrtype, data))
+            goto err;
+    } else {
+        ASN1_TYPE_set(ttmp, atype, stmp);
+        stmp = NULL;
+    }
+    if (!sk_ASN1_TYPE_push(attr->value.set, ttmp))
+        goto err;
+    return 1;
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    ASN1_TYPE_free(ttmp);
+    ASN1_STRING_free(stmp);
+    return 0;
+}
+
+int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
+{
+    if (!attr->single)
+        return sk_ASN1_TYPE_num(attr->value.set);
+    if (attr->value.single)
+        return 1;
+    return 0;
+}
+
+ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
+{
+    if (attr == NULL)
+        return (NULL);
+    return (attr->object);
+}
+
+void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
+                               int atrtype, void *data)
+{
+    ASN1_TYPE *ttmp;
+    ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
+    if (!ttmp)
+        return NULL;
+    if (atrtype != ASN1_TYPE_get(ttmp)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE);
+        return NULL;
+    }
+    return ttmp->value.ptr;
+}
+
+ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
+{
+    if (attr == NULL)
+        return (NULL);
+    if (idx >= X509_ATTRIBUTE_count(attr))
+        return NULL;
+    if (!attr->single)
+        return sk_ASN1_TYPE_value(attr->value.set, idx);
+    else
+        return attr->value.single;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c.grpc_back
new file mode 100644
index 0000000..85d65e7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_att.c.grpc_back	
@@ -0,0 +1,381 @@
+/* crypto/x509/x509_att.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
+{
+    return sk_X509_ATTRIBUTE_num(x);
+}
+
+int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
+                           int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509at_get_attr_by_OBJ(x, obj, lastpos));
+}
+
+int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
+                           const ASN1_OBJECT *obj, int lastpos)
+{
+    int n;
+    X509_ATTRIBUTE *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_ATTRIBUTE_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
+        if (OBJ_cmp(ex->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
+{
+    if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
+        return NULL;
+    else
+        return sk_X509_ATTRIBUTE_value(x, loc);
+}
+
+X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
+{
+    X509_ATTRIBUTE *ret;
+
+    if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
+        return (NULL);
+    ret = sk_X509_ATTRIBUTE_delete(x, loc);
+    return (ret);
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
+                                           X509_ATTRIBUTE *attr)
+{
+    X509_ATTRIBUTE *new_attr = NULL;
+    STACK_OF(X509_ATTRIBUTE) *sk = NULL;
+
+    if (x == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        goto err2;
+    }
+
+    if (*x == NULL) {
+        if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
+            goto err;
+    } else
+        sk = *x;
+
+    if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
+        goto err2;
+    if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
+        goto err;
+    if (*x == NULL)
+        *x = sk;
+    return (sk);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ err2:
+    if (new_attr != NULL)
+        X509_ATTRIBUTE_free(new_attr);
+    if (sk != NULL)
+        sk_X509_ATTRIBUTE_free(sk);
+    return (NULL);
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, const ASN1_OBJECT *obj,
+                                                  int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, int nid, int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
+                                                  **x, const char *attrname,
+                                                  int type,
+                                                  const unsigned char *bytes,
+                                                  int len)
+{
+    X509_ATTRIBUTE *attr;
+    STACK_OF(X509_ATTRIBUTE) *ret;
+    attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
+    if (!attr)
+        return 0;
+    ret = X509at_add1_attr(x, attr);
+    X509_ATTRIBUTE_free(attr);
+    return ret;
+}
+
+void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
+                              ASN1_OBJECT *obj, int lastpos, int type)
+{
+    int i;
+    X509_ATTRIBUTE *at;
+    i = X509at_get_attr_by_OBJ(x, obj, lastpos);
+    if (i == -1)
+        return NULL;
+    if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
+        return NULL;
+    at = X509at_get_attr(x, i);
+    if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
+        return NULL;
+    return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
+                                             int atrtype, const void *data,
+                                             int len)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return (NULL);
+    }
+    return X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
+                                             const ASN1_OBJECT *obj,
+                                             int atrtype, const void *data,
+                                             int len)
+{
+    X509_ATTRIBUTE *ret;
+
+    if ((attr == NULL) || (*attr == NULL)) {
+        if ((ret = X509_ATTRIBUTE_new()) == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return (NULL);
+        }
+    } else
+        ret = *attr;
+
+    if (!X509_ATTRIBUTE_set1_object(ret, obj))
+        goto err;
+    if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
+        goto err;
+
+    if ((attr != NULL) && (*attr == NULL))
+        *attr = ret;
+    return (ret);
+ err:
+    if ((attr == NULL) || (ret != *attr))
+        X509_ATTRIBUTE_free(ret);
+    return (NULL);
+}
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
+                                             const char *atrname, int type,
+                                             const unsigned char *bytes,
+                                             int len)
+{
+    ASN1_OBJECT *obj;
+    X509_ATTRIBUTE *nattr;
+
+    obj = OBJ_txt2obj(atrname, 0);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
+        ERR_add_error_data(2, "name=", atrname);
+        return (NULL);
+    }
+    nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
+    ASN1_OBJECT_free(obj);
+    return nattr;
+}
+
+int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
+{
+    if ((attr == NULL) || (obj == NULL))
+        return (0);
+    ASN1_OBJECT_free(attr->object);
+    attr->object = OBJ_dup(obj);
+    return attr->object != NULL;
+}
+
+int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
+                             const void *data, int len)
+{
+    ASN1_TYPE *ttmp = NULL;
+    ASN1_STRING *stmp = NULL;
+    int atype = 0;
+    if (!attr)
+        return 0;
+    if (attrtype & MBSTRING_FLAG) {
+        stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
+                                      OBJ_obj2nid(attr->object));
+        if (!stmp) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+            return 0;
+        }
+        atype = stmp->type;
+    } else if (len != -1) {
+        if (!(stmp = ASN1_STRING_type_new(attrtype)))
+            goto err;
+        if (!ASN1_STRING_set(stmp, data, len))
+            goto err;
+        atype = attrtype;
+    }
+    if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
+        goto err;
+    attr->single = 0;
+    /*
+     * This is a bit naughty because the attribute should really have at
+     * least one value but some types use and zero length SET and require
+     * this.
+     */
+    if (attrtype == 0) {
+        ASN1_STRING_free(stmp);
+        return 1;
+    }
+    if (!(ttmp = ASN1_TYPE_new()))
+        goto err;
+    if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
+        if (!ASN1_TYPE_set1(ttmp, attrtype, data))
+            goto err;
+    } else {
+        ASN1_TYPE_set(ttmp, atype, stmp);
+        stmp = NULL;
+    }
+    if (!sk_ASN1_TYPE_push(attr->value.set, ttmp))
+        goto err;
+    return 1;
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    ASN1_TYPE_free(ttmp);
+    ASN1_STRING_free(stmp);
+    return 0;
+}
+
+int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
+{
+    if (!attr->single)
+        return sk_ASN1_TYPE_num(attr->value.set);
+    if (attr->value.single)
+        return 1;
+    return 0;
+}
+
+ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
+{
+    if (attr == NULL)
+        return (NULL);
+    return (attr->object);
+}
+
+void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
+                               int atrtype, void *data)
+{
+    ASN1_TYPE *ttmp;
+    ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
+    if (!ttmp)
+        return NULL;
+    if (atrtype != ASN1_TYPE_get(ttmp)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE);
+        return NULL;
+    }
+    return ttmp->value.ptr;
+}
+
+ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
+{
+    if (attr == NULL)
+        return (NULL);
+    if (idx >= X509_ATTRIBUTE_count(attr))
+        return NULL;
+    if (!attr->single)
+        return sk_ASN1_TYPE_value(attr->value.set, idx);
+    else
+        return attr->value.single;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c
new file mode 100644
index 0000000..5d7c02f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c	
@@ -0,0 +1,476 @@
+/* crypto/x509/x509_cmp.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+
+int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
+{
+    int i;
+    X509_CINF *ai, *bi;
+
+    ai = a->cert_info;
+    bi = b->cert_info;
+    i = M_ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber);
+    if (i)
+        return (i);
+    return (X509_NAME_cmp(ai->issuer, bi->issuer));
+}
+
+unsigned long X509_issuer_and_serial_hash(X509 *a)
+{
+    unsigned long ret = 0;
+    EVP_MD_CTX ctx;
+    unsigned char md[16];
+    char *f;
+
+    EVP_MD_CTX_init(&ctx);
+    f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
+    if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
+        goto err;
+    if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
+        goto err;
+    OPENSSL_free(f);
+    if (!EVP_DigestUpdate
+        (&ctx, (unsigned char *)a->cert_info->serialNumber->data,
+         (unsigned long)a->cert_info->serialNumber->length))
+        goto err;
+    if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
+        goto err;
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+ err:
+    EVP_MD_CTX_cleanup(&ctx);
+    return (ret);
+}
+
+int X509_issuer_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
+}
+
+int X509_subject_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
+}
+
+int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
+{
+    return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
+}
+
+int X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
+{
+    return OPENSSL_memcmp(a->sha1_hash, b->sha1_hash, 20);
+}
+
+X509_NAME *X509_get_issuer_name(X509 *a)
+{
+    return (a->cert_info->issuer);
+}
+
+unsigned long X509_issuer_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->issuer));
+}
+
+unsigned long X509_issuer_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->issuer));
+}
+
+X509_NAME *X509_get_subject_name(X509 *a)
+{
+    return (a->cert_info->subject);
+}
+
+ASN1_INTEGER *X509_get_serialNumber(X509 *a)
+{
+    return (a->cert_info->serialNumber);
+}
+
+unsigned long X509_subject_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->subject));
+}
+
+unsigned long X509_subject_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->subject));
+}
+
+/*
+ * Compare two certificates: they must be identical for this to work. NB:
+ * Although "cmp" operations are generally prototyped to take "const"
+ * arguments (eg. for use in STACKs), the way X509 handling is - these
+ * operations may involve ensuring the hashes are up-to-date and ensuring
+ * certain cert information is cached. So this is the point where the
+ * "depth-first" constification tree has to halt with an evil cast.
+ */
+int X509_cmp(const X509 *a, const X509 *b)
+{
+    int rv;
+    /* ensure hash is valid */
+    X509_check_purpose((X509 *)a, -1, 0);
+    X509_check_purpose((X509 *)b, -1, 0);
+
+    rv = OPENSSL_memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
+    if (rv)
+        return rv;
+    /* Check for match against stored encoding too */
+    if (!a->cert_info->enc.modified && !b->cert_info->enc.modified) {
+        rv = (int)(a->cert_info->enc.len - b->cert_info->enc.len);
+        if (rv)
+            return rv;
+        return OPENSSL_memcmp(a->cert_info->enc.enc, b->cert_info->enc.enc,
+                              a->cert_info->enc.len);
+    }
+    return rv;
+}
+
+int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
+{
+    int ret;
+
+    /* Ensure canonical encoding is present and up to date */
+
+    if (!a->canon_enc || a->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)a, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    if (!b->canon_enc || b->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)b, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    ret = a->canon_enclen - b->canon_enclen;
+
+    if (ret)
+        return ret;
+
+    return OPENSSL_memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
+
+}
+
+unsigned long X509_NAME_hash(X509_NAME *x)
+{
+    unsigned long ret = 0;
+    unsigned char md[SHA_DIGEST_LENGTH];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
+                    NULL))
+        return 0;
+
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+    return (ret);
+}
+
+/*
+ * I now DER encode the name and hash it.  Since I cache the DER encoding,
+ * this is reasonably efficient.
+ */
+
+unsigned long X509_NAME_hash_old(X509_NAME *x)
+{
+    EVP_MD_CTX md_ctx;
+    unsigned long ret = 0;
+    unsigned char md[16];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    EVP_MD_CTX_init(&md_ctx);
+    /* EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); */
+    if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL)
+        && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length)
+        && EVP_DigestFinal_ex(&md_ctx, md, NULL))
+        ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+               ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+            ) & 0xffffffffL;
+    EVP_MD_CTX_cleanup(&md_ctx);
+
+    return (ret);
+}
+
+/* Search a stack of X509 for a match */
+X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
+                                     ASN1_INTEGER *serial)
+{
+    size_t i;
+    X509_CINF cinf;
+    X509 x, *x509 = NULL;
+
+    if (!sk)
+        return NULL;
+
+    x.cert_info = &cinf;
+    cinf.serialNumber = serial;
+    cinf.issuer = name;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_issuer_and_serial_cmp(x509, &x) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
+{
+    X509 *x509;
+    size_t i;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+EVP_PKEY *X509_get_pubkey(X509 *x)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(x->cert_info->key));
+}
+
+ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
+{
+    if (!x)
+        return NULL;
+    return x->cert_info->key->public_key;
+}
+
+int X509_check_private_key(X509 *x, const EVP_PKEY *k)
+{
+    EVP_PKEY *xk;
+    int ret;
+
+    xk = X509_get_pubkey(x);
+
+    if (xk)
+        ret = EVP_PKEY_cmp(xk, k);
+    else
+        ret = -2;
+
+    switch (ret) {
+    case 1:
+        break;
+    case 0:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+        break;
+    case -1:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+        break;
+    case -2:
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    }
+    if (xk)
+        EVP_PKEY_free(xk);
+    if (ret > 0)
+        return 1;
+    return 0;
+}
+
+/*
+ * Check a suite B algorithm is permitted: pass in a public key and the NID
+ * of its signature (or 0 if no signature). The pflags is a pointer to a
+ * flags field which must contain the suite B verification flags.
+ */
+
+static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags)
+{
+    const EC_GROUP *grp = NULL;
+    int curve_nid;
+    if (pkey && pkey->type == EVP_PKEY_EC)
+        grp = EC_KEY_get0_group(pkey->pkey.ec);
+    if (!grp)
+        return X509_V_ERR_SUITE_B_INVALID_ALGORITHM;
+    curve_nid = EC_GROUP_get_curve_name(grp);
+    /* Check curve is consistent with LOS */
+    if (curve_nid == NID_secp384r1) { /* P-384 */
+        /*
+         * Check signature algorithm is consistent with curve.
+         */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+        /* If we encounter P-384 we cannot use P-256 later */
+        *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY;
+    } else if (curve_nid == NID_X9_62_prime256v1) { /* P-256 */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+    } else
+        return X509_V_ERR_SUITE_B_INVALID_CURVE;
+
+    return X509_V_OK;
+}
+
+int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain,
+                            unsigned long flags)
+{
+    int rv, sign_nid;
+    size_t i;
+    EVP_PKEY *pk = NULL;
+    unsigned long tflags;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    tflags = flags;
+    /* If no EE certificate passed in must be first in chain */
+    if (x == NULL) {
+        x = sk_X509_value(chain, 0);
+        i = 1;
+    } else
+        i = 0;
+
+    if (X509_get_version(x) != 2) {
+        rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+
+    pk = X509_get_pubkey(x);
+    /* Check EE key only */
+    rv = check_suite_b(pk, -1, &tflags);
+    if (rv != X509_V_OK) {
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+    for (; i < sk_X509_num(chain); i++) {
+        sign_nid = X509_get_signature_nid(x);
+        x = sk_X509_value(chain, i);
+        if (X509_get_version(x) != 2) {
+            rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+            goto end;
+        }
+        EVP_PKEY_free(pk);
+        pk = X509_get_pubkey(x);
+        rv = check_suite_b(pk, sign_nid, &tflags);
+        if (rv != X509_V_OK)
+            goto end;
+    }
+
+    /* Final check: root CA signature */
+    rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags);
+ end:
+    if (pk)
+        EVP_PKEY_free(pk);
+    if (rv != X509_V_OK) {
+        /* Invalid signature or LOS errors are for previous cert */
+        if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM
+             || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i)
+            i--;
+        /*
+         * If we have LOS error and flags changed then we are signing P-384
+         * with P-256. Use more meaninggul error.
+         */
+        if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags)
+            rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256;
+        if (perror_depth)
+            *perror_depth = i;
+    }
+    return rv;
+}
+
+int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags)
+{
+    int sign_nid;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    sign_nid = OBJ_obj2nid(crl->crl->sig_alg->algorithm);
+    return check_suite_b(pk, sign_nid, &flags);
+}
+
+/*
+ * Not strictly speaking an "up_ref" as a STACK doesn't have a reference
+ * count but it has the same effect by duping the STACK and upping the ref of
+ * each X509 structure.
+ */
+STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain)
+{
+    STACK_OF(X509) *ret;
+    size_t i;
+    ret = sk_X509_dup(chain);
+    for (i = 0; i < sk_X509_num(ret); i++) {
+        X509_up_ref(sk_X509_value(ret, i));
+    }
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c.grpc_back
new file mode 100644
index 0000000..28f2e95
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_cmp.c.grpc_back	
@@ -0,0 +1,476 @@
+/* crypto/x509/x509_cmp.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+
+int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
+{
+    int i;
+    X509_CINF *ai, *bi;
+
+    ai = a->cert_info;
+    bi = b->cert_info;
+    i = M_ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber);
+    if (i)
+        return (i);
+    return (X509_NAME_cmp(ai->issuer, bi->issuer));
+}
+
+unsigned long X509_issuer_and_serial_hash(X509 *a)
+{
+    unsigned long ret = 0;
+    EVP_MD_CTX ctx;
+    unsigned char md[16];
+    char *f;
+
+    EVP_MD_CTX_init(&ctx);
+    f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
+    if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
+        goto err;
+    if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
+        goto err;
+    OPENSSL_free(f);
+    if (!EVP_DigestUpdate
+        (&ctx, (unsigned char *)a->cert_info->serialNumber->data,
+         (unsigned long)a->cert_info->serialNumber->length))
+        goto err;
+    if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
+        goto err;
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+ err:
+    EVP_MD_CTX_cleanup(&ctx);
+    return (ret);
+}
+
+int X509_issuer_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
+}
+
+int X509_subject_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
+}
+
+int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
+{
+    return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
+}
+
+int X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
+{
+    return OPENSSL_memcmp(a->sha1_hash, b->sha1_hash, 20);
+}
+
+X509_NAME *X509_get_issuer_name(X509 *a)
+{
+    return (a->cert_info->issuer);
+}
+
+unsigned long X509_issuer_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->issuer));
+}
+
+unsigned long X509_issuer_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->issuer));
+}
+
+X509_NAME *X509_get_subject_name(X509 *a)
+{
+    return (a->cert_info->subject);
+}
+
+ASN1_INTEGER *X509_get_serialNumber(X509 *a)
+{
+    return (a->cert_info->serialNumber);
+}
+
+unsigned long X509_subject_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->subject));
+}
+
+unsigned long X509_subject_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->subject));
+}
+
+/*
+ * Compare two certificates: they must be identical for this to work. NB:
+ * Although "cmp" operations are generally prototyped to take "const"
+ * arguments (eg. for use in STACKs), the way X509 handling is - these
+ * operations may involve ensuring the hashes are up-to-date and ensuring
+ * certain cert information is cached. So this is the point where the
+ * "depth-first" constification tree has to halt with an evil cast.
+ */
+int X509_cmp(const X509 *a, const X509 *b)
+{
+    int rv;
+    /* ensure hash is valid */
+    X509_check_purpose((X509 *)a, -1, 0);
+    X509_check_purpose((X509 *)b, -1, 0);
+
+    rv = OPENSSL_memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
+    if (rv)
+        return rv;
+    /* Check for match against stored encoding too */
+    if (!a->cert_info->enc.modified && !b->cert_info->enc.modified) {
+        rv = (int)(a->cert_info->enc.len - b->cert_info->enc.len);
+        if (rv)
+            return rv;
+        return OPENSSL_memcmp(a->cert_info->enc.enc, b->cert_info->enc.enc,
+                              a->cert_info->enc.len);
+    }
+    return rv;
+}
+
+int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
+{
+    int ret;
+
+    /* Ensure canonical encoding is present and up to date */
+
+    if (!a->canon_enc || a->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)a, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    if (!b->canon_enc || b->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)b, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    ret = a->canon_enclen - b->canon_enclen;
+
+    if (ret)
+        return ret;
+
+    return OPENSSL_memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
+
+}
+
+unsigned long X509_NAME_hash(X509_NAME *x)
+{
+    unsigned long ret = 0;
+    unsigned char md[SHA_DIGEST_LENGTH];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
+                    NULL))
+        return 0;
+
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+    return (ret);
+}
+
+/*
+ * I now DER encode the name and hash it.  Since I cache the DER encoding,
+ * this is reasonably efficient.
+ */
+
+unsigned long X509_NAME_hash_old(X509_NAME *x)
+{
+    EVP_MD_CTX md_ctx;
+    unsigned long ret = 0;
+    unsigned char md[16];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    EVP_MD_CTX_init(&md_ctx);
+    /* EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); */
+    if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL)
+        && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length)
+        && EVP_DigestFinal_ex(&md_ctx, md, NULL))
+        ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+               ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+            ) & 0xffffffffL;
+    EVP_MD_CTX_cleanup(&md_ctx);
+
+    return (ret);
+}
+
+/* Search a stack of X509 for a match */
+X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
+                                     ASN1_INTEGER *serial)
+{
+    size_t i;
+    X509_CINF cinf;
+    X509 x, *x509 = NULL;
+
+    if (!sk)
+        return NULL;
+
+    x.cert_info = &cinf;
+    cinf.serialNumber = serial;
+    cinf.issuer = name;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_issuer_and_serial_cmp(x509, &x) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
+{
+    X509 *x509;
+    size_t i;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+EVP_PKEY *X509_get_pubkey(X509 *x)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(x->cert_info->key));
+}
+
+ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
+{
+    if (!x)
+        return NULL;
+    return x->cert_info->key->public_key;
+}
+
+int X509_check_private_key(X509 *x, const EVP_PKEY *k)
+{
+    EVP_PKEY *xk;
+    int ret;
+
+    xk = X509_get_pubkey(x);
+
+    if (xk)
+        ret = EVP_PKEY_cmp(xk, k);
+    else
+        ret = -2;
+
+    switch (ret) {
+    case 1:
+        break;
+    case 0:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+        break;
+    case -1:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+        break;
+    case -2:
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    }
+    if (xk)
+        EVP_PKEY_free(xk);
+    if (ret > 0)
+        return 1;
+    return 0;
+}
+
+/*
+ * Check a suite B algorithm is permitted: pass in a public key and the NID
+ * of its signature (or 0 if no signature). The pflags is a pointer to a
+ * flags field which must contain the suite B verification flags.
+ */
+
+static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags)
+{
+    const EC_GROUP *grp = NULL;
+    int curve_nid;
+    if (pkey && pkey->type == EVP_PKEY_EC)
+        grp = EC_KEY_get0_group(pkey->pkey.ec);
+    if (!grp)
+        return X509_V_ERR_SUITE_B_INVALID_ALGORITHM;
+    curve_nid = EC_GROUP_get_curve_name(grp);
+    /* Check curve is consistent with LOS */
+    if (curve_nid == NID_secp384r1) { /* P-384 */
+        /*
+         * Check signature algorithm is consistent with curve.
+         */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+        /* If we encounter P-384 we cannot use P-256 later */
+        *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY;
+    } else if (curve_nid == NID_X9_62_prime256v1) { /* P-256 */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+    } else
+        return X509_V_ERR_SUITE_B_INVALID_CURVE;
+
+    return X509_V_OK;
+}
+
+int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain,
+                            unsigned long flags)
+{
+    int rv, sign_nid;
+    size_t i;
+    EVP_PKEY *pk = NULL;
+    unsigned long tflags;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    tflags = flags;
+    /* If no EE certificate passed in must be first in chain */
+    if (x == NULL) {
+        x = sk_X509_value(chain, 0);
+        i = 1;
+    } else
+        i = 0;
+
+    if (X509_get_version(x) != 2) {
+        rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+
+    pk = X509_get_pubkey(x);
+    /* Check EE key only */
+    rv = check_suite_b(pk, -1, &tflags);
+    if (rv != X509_V_OK) {
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+    for (; i < sk_X509_num(chain); i++) {
+        sign_nid = X509_get_signature_nid(x);
+        x = sk_X509_value(chain, i);
+        if (X509_get_version(x) != 2) {
+            rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+            goto end;
+        }
+        EVP_PKEY_free(pk);
+        pk = X509_get_pubkey(x);
+        rv = check_suite_b(pk, sign_nid, &tflags);
+        if (rv != X509_V_OK)
+            goto end;
+    }
+
+    /* Final check: root CA signature */
+    rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags);
+ end:
+    if (pk)
+        EVP_PKEY_free(pk);
+    if (rv != X509_V_OK) {
+        /* Invalid signature or LOS errors are for previous cert */
+        if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM
+             || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i)
+            i--;
+        /*
+         * If we have LOS error and flags changed then we are signing P-384
+         * with P-256. Use more meaninggul error.
+         */
+        if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags)
+            rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256;
+        if (perror_depth)
+            *perror_depth = i;
+    }
+    return rv;
+}
+
+int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags)
+{
+    int sign_nid;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    sign_nid = OBJ_obj2nid(crl->crl->sig_alg->algorithm);
+    return check_suite_b(pk, sign_nid, &flags);
+}
+
+/*
+ * Not strictly speaking an "up_ref" as a STACK doesn't have a reference
+ * count but it has the same effect by duping the STACK and upping the ref of
+ * each X509 structure.
+ */
+STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain)
+{
+    STACK_OF(X509) *ret;
+    size_t i;
+    ret = sk_X509_dup(chain);
+    for (i = 0; i < sk_X509_num(ret); i++) {
+        X509_up_ref(sk_X509_value(ret, i));
+    }
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c
new file mode 100644
index 0000000..a407c1e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c	
@@ -0,0 +1,106 @@
+/* crypto/x509/x509_d2.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/x509.h>
+
+#ifndef OPENSSL_NO_STDIO
+int X509_STORE_set_default_paths(X509_STORE *ctx)
+{
+    X509_LOOKUP *lookup;
+
+    lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_file());
+    if (lookup == NULL)
+        return (0);
+    X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
+
+    lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_hash_dir());
+    if (lookup == NULL)
+        return (0);
+    X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
+
+    /* clear any errors */
+    ERR_clear_error();
+
+    return (1);
+}
+
+int X509_STORE_load_locations(X509_STORE *ctx, const char *file,
+                              const char *path)
+{
+    X509_LOOKUP *lookup;
+
+    if (file != NULL) {
+        lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_file());
+        if (lookup == NULL)
+            return (0);
+        if (X509_LOOKUP_load_file(lookup, file, X509_FILETYPE_PEM) != 1)
+            return (0);
+    }
+    if (path != NULL) {
+        lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_hash_dir());
+        if (lookup == NULL)
+            return (0);
+        if (X509_LOOKUP_add_dir(lookup, path, X509_FILETYPE_PEM) != 1)
+            return (0);
+    }
+    if ((path == NULL) && (file == NULL))
+        return (0);
+    return (1);
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c.grpc_back
new file mode 100644
index 0000000..69ae54e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_d2.c.grpc_back	
@@ -0,0 +1,106 @@
+/* crypto/x509/x509_d2.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/err.h>
+#include <openssl/x509.h>
+
+#ifndef OPENSSL_NO_STDIO
+int X509_STORE_set_default_paths(X509_STORE *ctx)
+{
+    X509_LOOKUP *lookup;
+
+    lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_file());
+    if (lookup == NULL)
+        return (0);
+    X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
+
+    lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_hash_dir());
+    if (lookup == NULL)
+        return (0);
+    X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
+
+    /* clear any errors */
+    ERR_clear_error();
+
+    return (1);
+}
+
+int X509_STORE_load_locations(X509_STORE *ctx, const char *file,
+                              const char *path)
+{
+    X509_LOOKUP *lookup;
+
+    if (file != NULL) {
+        lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_file());
+        if (lookup == NULL)
+            return (0);
+        if (X509_LOOKUP_load_file(lookup, file, X509_FILETYPE_PEM) != 1)
+            return (0);
+    }
+    if (path != NULL) {
+        lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_hash_dir());
+        if (lookup == NULL)
+            return (0);
+        if (X509_LOOKUP_add_dir(lookup, path, X509_FILETYPE_PEM) != 1)
+            return (0);
+    }
+    if ((path == NULL) && (file == NULL))
+        return (0);
+    return (1);
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c
new file mode 100644
index 0000000..bcc741e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c	
@@ -0,0 +1,103 @@
+/* crypto/x509/x509_def.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+/* TODO(fork): cleanup */
+
+#if defined(OPENSSL_FUCHSIA)
+#define OPENSSLDIR "/config/ssl"
+#else
+#define OPENSSLDIR "/etc/ssl"
+#endif
+
+#define X509_CERT_AREA          OPENSSLDIR
+#define X509_CERT_DIR           OPENSSLDIR "/certs"
+#define X509_CERT_FILE          OPENSSLDIR "/cert.pem"
+#define X509_PRIVATE_DIR        OPENSSLDIR "/private"
+#define X509_CERT_DIR_EVP        "SSL_CERT_DIR"
+#define X509_CERT_FILE_EVP       "SSL_CERT_FILE"
+
+const char *X509_get_default_private_dir(void)
+{
+    return (X509_PRIVATE_DIR);
+}
+
+const char *X509_get_default_cert_area(void)
+{
+    return (X509_CERT_AREA);
+}
+
+const char *X509_get_default_cert_dir(void)
+{
+    return (X509_CERT_DIR);
+}
+
+const char *X509_get_default_cert_file(void)
+{
+    return (X509_CERT_FILE);
+}
+
+const char *X509_get_default_cert_dir_env(void)
+{
+    return (X509_CERT_DIR_EVP);
+}
+
+const char *X509_get_default_cert_file_env(void)
+{
+    return (X509_CERT_FILE_EVP);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c.grpc_back
new file mode 100644
index 0000000..d2bc3e5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_def.c.grpc_back	
@@ -0,0 +1,103 @@
+/* crypto/x509/x509_def.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+/* TODO(fork): cleanup */
+
+#if defined(OPENSSL_FUCHSIA)
+#define OPENSSLDIR "/config/ssl"
+#else
+#define OPENSSLDIR "/etc/ssl"
+#endif
+
+#define X509_CERT_AREA          OPENSSLDIR
+#define X509_CERT_DIR           OPENSSLDIR "/certs"
+#define X509_CERT_FILE          OPENSSLDIR "/cert.pem"
+#define X509_PRIVATE_DIR        OPENSSLDIR "/private"
+#define X509_CERT_DIR_EVP        "SSL_CERT_DIR"
+#define X509_CERT_FILE_EVP       "SSL_CERT_FILE"
+
+const char *X509_get_default_private_dir(void)
+{
+    return (X509_PRIVATE_DIR);
+}
+
+const char *X509_get_default_cert_area(void)
+{
+    return (X509_CERT_AREA);
+}
+
+const char *X509_get_default_cert_dir(void)
+{
+    return (X509_CERT_DIR);
+}
+
+const char *X509_get_default_cert_file(void)
+{
+    return (X509_CERT_FILE);
+}
+
+const char *X509_get_default_cert_dir_env(void)
+{
+    return (X509_CERT_DIR_EVP);
+}
+
+const char *X509_get_default_cert_file_env(void)
+{
+    return (X509_CERT_FILE_EVP);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c
new file mode 100644
index 0000000..69aaafb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c	
@@ -0,0 +1,206 @@
+/* crypto/x509/x509_ext.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+int X509_CRL_get_ext_count(X509_CRL *x)
+{
+    return (X509v3_get_ext_count(x->crl->extensions));
+}
+
+int X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->crl->extensions, nid, lastpos));
+}
+
+int X509_CRL_get_ext_by_OBJ(X509_CRL *x, ASN1_OBJECT *obj, int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->crl->extensions, obj, lastpos));
+}
+
+int X509_CRL_get_ext_by_critical(X509_CRL *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical(x->crl->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc)
+{
+    return (X509v3_get_ext(x->crl->extensions, loc));
+}
+
+X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc)
+{
+    return (X509v3_delete_ext(x->crl->extensions, loc));
+}
+
+void *X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->crl->extensions, nid, crit, idx);
+}
+
+int X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit,
+                          unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->crl->extensions, nid, value, crit, flags);
+}
+
+int X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->crl->extensions), ex, loc) != NULL);
+}
+
+int X509_get_ext_count(X509 *x)
+{
+    return (X509v3_get_ext_count(x->cert_info->extensions));
+}
+
+int X509_get_ext_by_NID(X509 *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->cert_info->extensions, nid, lastpos));
+}
+
+int X509_get_ext_by_OBJ(X509 *x, ASN1_OBJECT *obj, int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->cert_info->extensions, obj, lastpos));
+}
+
+int X509_get_ext_by_critical(X509 *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical
+            (x->cert_info->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_get_ext(X509 *x, int loc)
+{
+    return (X509v3_get_ext(x->cert_info->extensions, loc));
+}
+
+X509_EXTENSION *X509_delete_ext(X509 *x, int loc)
+{
+    return (X509v3_delete_ext(x->cert_info->extensions, loc));
+}
+
+int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->cert_info->extensions), ex, loc) != NULL);
+}
+
+void *X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->cert_info->extensions, nid, crit, idx);
+}
+
+int X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit,
+                      unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->cert_info->extensions, nid, value, crit,
+                           flags);
+}
+
+int X509_REVOKED_get_ext_count(X509_REVOKED *x)
+{
+    return (X509v3_get_ext_count(x->extensions));
+}
+
+int X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->extensions, nid, lastpos));
+}
+
+int X509_REVOKED_get_ext_by_OBJ(X509_REVOKED *x, ASN1_OBJECT *obj,
+                                int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->extensions, obj, lastpos));
+}
+
+int X509_REVOKED_get_ext_by_critical(X509_REVOKED *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical(x->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc)
+{
+    return (X509v3_get_ext(x->extensions, loc));
+}
+
+X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc)
+{
+    return (X509v3_delete_ext(x->extensions, loc));
+}
+
+int X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->extensions), ex, loc) != NULL);
+}
+
+void *X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->extensions, nid, crit, idx);
+}
+
+int X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit,
+                              unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->extensions, nid, value, crit, flags);
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c.grpc_back
new file mode 100644
index 0000000..a329f6f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_ext.c.grpc_back	
@@ -0,0 +1,206 @@
+/* crypto/x509/x509_ext.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+int X509_CRL_get_ext_count(X509_CRL *x)
+{
+    return (X509v3_get_ext_count(x->crl->extensions));
+}
+
+int X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->crl->extensions, nid, lastpos));
+}
+
+int X509_CRL_get_ext_by_OBJ(X509_CRL *x, ASN1_OBJECT *obj, int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->crl->extensions, obj, lastpos));
+}
+
+int X509_CRL_get_ext_by_critical(X509_CRL *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical(x->crl->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc)
+{
+    return (X509v3_get_ext(x->crl->extensions, loc));
+}
+
+X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc)
+{
+    return (X509v3_delete_ext(x->crl->extensions, loc));
+}
+
+void *X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->crl->extensions, nid, crit, idx);
+}
+
+int X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit,
+                          unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->crl->extensions, nid, value, crit, flags);
+}
+
+int X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->crl->extensions), ex, loc) != NULL);
+}
+
+int X509_get_ext_count(X509 *x)
+{
+    return (X509v3_get_ext_count(x->cert_info->extensions));
+}
+
+int X509_get_ext_by_NID(X509 *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->cert_info->extensions, nid, lastpos));
+}
+
+int X509_get_ext_by_OBJ(X509 *x, ASN1_OBJECT *obj, int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->cert_info->extensions, obj, lastpos));
+}
+
+int X509_get_ext_by_critical(X509 *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical
+            (x->cert_info->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_get_ext(X509 *x, int loc)
+{
+    return (X509v3_get_ext(x->cert_info->extensions, loc));
+}
+
+X509_EXTENSION *X509_delete_ext(X509 *x, int loc)
+{
+    return (X509v3_delete_ext(x->cert_info->extensions, loc));
+}
+
+int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->cert_info->extensions), ex, loc) != NULL);
+}
+
+void *X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->cert_info->extensions, nid, crit, idx);
+}
+
+int X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit,
+                      unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->cert_info->extensions, nid, value, crit,
+                           flags);
+}
+
+int X509_REVOKED_get_ext_count(X509_REVOKED *x)
+{
+    return (X509v3_get_ext_count(x->extensions));
+}
+
+int X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos)
+{
+    return (X509v3_get_ext_by_NID(x->extensions, nid, lastpos));
+}
+
+int X509_REVOKED_get_ext_by_OBJ(X509_REVOKED *x, ASN1_OBJECT *obj,
+                                int lastpos)
+{
+    return (X509v3_get_ext_by_OBJ(x->extensions, obj, lastpos));
+}
+
+int X509_REVOKED_get_ext_by_critical(X509_REVOKED *x, int crit, int lastpos)
+{
+    return (X509v3_get_ext_by_critical(x->extensions, crit, lastpos));
+}
+
+X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc)
+{
+    return (X509v3_get_ext(x->extensions, loc));
+}
+
+X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc)
+{
+    return (X509v3_delete_ext(x->extensions, loc));
+}
+
+int X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc)
+{
+    return (X509v3_add_ext(&(x->extensions), ex, loc) != NULL);
+}
+
+void *X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx)
+{
+    return X509V3_get_d2i(x->extensions, nid, crit, idx);
+}
+
+int X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit,
+                              unsigned long flags)
+{
+    return X509V3_add1_i2d(&x->extensions, nid, value, crit, flags);
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c
new file mode 100644
index 0000000..6b10097
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c	
@@ -0,0 +1,834 @@
+/* crypto/x509/x509_lu.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
+{
+    X509_LOOKUP *ret;
+
+    ret = (X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
+    if (ret == NULL)
+        return NULL;
+
+    ret->init = 0;
+    ret->skip = 0;
+    ret->method = method;
+    ret->method_data = NULL;
+    ret->store_ctx = NULL;
+    if ((method->new_item != NULL) && !method->new_item(ret)) {
+        OPENSSL_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+void X509_LOOKUP_free(X509_LOOKUP *ctx)
+{
+    if (ctx == NULL)
+        return;
+    if ((ctx->method != NULL) && (ctx->method->free != NULL))
+        (*ctx->method->free) (ctx);
+    OPENSSL_free(ctx);
+}
+
+int X509_LOOKUP_init(X509_LOOKUP *ctx)
+{
+    if (ctx->method == NULL)
+        return 0;
+    if (ctx->method->init != NULL)
+        return ctx->method->init(ctx);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
+{
+    if (ctx->method == NULL)
+        return 0;
+    if (ctx->method->shutdown != NULL)
+        return ctx->method->shutdown(ctx);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
+                     char **ret)
+{
+    if (ctx->method == NULL)
+        return -1;
+    if (ctx->method->ctrl != NULL)
+        return ctx->method->ctrl(ctx, cmd, argc, argl, ret);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
+                           X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
+        return 0;
+    if (ctx->skip)
+        return 0;
+    return ctx->method->get_by_subject(ctx, type, name, ret) > 0;
+}
+
+int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
+                                 ASN1_INTEGER *serial, X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL))
+        return 0;
+    return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret) > 0;
+}
+
+int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+                               unsigned char *bytes, int len,
+                               X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
+        return 0;
+    return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret) > 0;
+}
+
+int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
+                         X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
+        return 0;
+    return ctx->method->get_by_alias(ctx, type, str, len, ret) > 0;
+}
+
+static int x509_object_cmp(const X509_OBJECT **a, const X509_OBJECT **b)
+{
+    int ret;
+
+    ret = ((*a)->type - (*b)->type);
+    if (ret)
+        return ret;
+    switch ((*a)->type) {
+    case X509_LU_X509:
+        ret = X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509);
+        break;
+    case X509_LU_CRL:
+        ret = X509_CRL_cmp((*a)->data.crl, (*b)->data.crl);
+        break;
+    default:
+        /* abort(); */
+        return 0;
+    }
+    return ret;
+}
+
+X509_STORE *X509_STORE_new(void)
+{
+    X509_STORE *ret;
+
+    if ((ret = (X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL)
+        return NULL;
+    OPENSSL_memset(ret, 0, sizeof(*ret));
+    CRYPTO_MUTEX_init(&ret->objs_lock);
+    ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
+    if (ret->objs == NULL)
+        goto err;
+    ret->cache = 1;
+    ret->get_cert_methods = sk_X509_LOOKUP_new_null();
+    if (ret->get_cert_methods == NULL)
+        goto err;
+    ret->param = X509_VERIFY_PARAM_new();
+    if (ret->param == NULL)
+        goto err;
+
+    ret->references = 1;
+    return ret;
+ err:
+    if (ret) {
+        CRYPTO_MUTEX_cleanup(&ret->objs_lock);
+        if (ret->param)
+            X509_VERIFY_PARAM_free(ret->param);
+        if (ret->get_cert_methods)
+            sk_X509_LOOKUP_free(ret->get_cert_methods);
+        if (ret->objs)
+            sk_X509_OBJECT_free(ret->objs);
+        OPENSSL_free(ret);
+    }
+    return NULL;
+}
+
+int X509_STORE_up_ref(X509_STORE *store)
+{
+    CRYPTO_refcount_inc(&store->references);
+    return 1;
+}
+
+static void cleanup(X509_OBJECT *a)
+{
+    if (a == NULL) {
+        return;
+    }
+    if (a->type == X509_LU_X509) {
+        X509_free(a->data.x509);
+    } else if (a->type == X509_LU_CRL) {
+        X509_CRL_free(a->data.crl);
+    } else {
+        /* abort(); */
+    }
+
+    OPENSSL_free(a);
+}
+
+void X509_STORE_free(X509_STORE *vfy)
+{
+    size_t j;
+    STACK_OF(X509_LOOKUP) *sk;
+    X509_LOOKUP *lu;
+
+    if (vfy == NULL)
+        return;
+
+    if (!CRYPTO_refcount_dec_and_test_zero(&vfy->references)) {
+        return;
+    }
+
+    CRYPTO_MUTEX_cleanup(&vfy->objs_lock);
+
+    sk = vfy->get_cert_methods;
+    for (j = 0; j < sk_X509_LOOKUP_num(sk); j++) {
+        lu = sk_X509_LOOKUP_value(sk, j);
+        X509_LOOKUP_shutdown(lu);
+        X509_LOOKUP_free(lu);
+    }
+    sk_X509_LOOKUP_free(sk);
+    sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
+
+    if (vfy->param)
+        X509_VERIFY_PARAM_free(vfy->param);
+    OPENSSL_free(vfy);
+}
+
+X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
+{
+    size_t i;
+    STACK_OF(X509_LOOKUP) *sk;
+    X509_LOOKUP *lu;
+
+    sk = v->get_cert_methods;
+    for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
+        lu = sk_X509_LOOKUP_value(sk, i);
+        if (m == lu->method) {
+            return lu;
+        }
+    }
+    /* a new one */
+    lu = X509_LOOKUP_new(m);
+    if (lu == NULL)
+        return NULL;
+    else {
+        lu->store_ctx = v;
+        if (sk_X509_LOOKUP_push(v->get_cert_methods, lu))
+            return lu;
+        else {
+            X509_LOOKUP_free(lu);
+            return NULL;
+        }
+    }
+}
+
+int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
+                              X509_OBJECT *ret)
+{
+    X509_STORE *ctx = vs->ctx;
+    X509_LOOKUP *lu;
+    X509_OBJECT stmp, *tmp;
+    int i;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+    tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name);
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    if (tmp == NULL || type == X509_LU_CRL) {
+        for (i = 0; i < (int)sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) {
+            lu = sk_X509_LOOKUP_value(ctx->get_cert_methods, i);
+            if (X509_LOOKUP_by_subject(lu, type, name, &stmp)) {
+                tmp = &stmp;
+                break;
+            }
+        }
+        if (tmp == NULL)
+            return 0;
+    }
+
+    /*
+     * if (ret->data.ptr != NULL) X509_OBJECT_free_contents(ret);
+     */
+
+    ret->type = tmp->type;
+    ret->data.ptr = tmp->data.ptr;
+
+    X509_OBJECT_up_ref_count(ret);
+
+    return 1;
+}
+
+int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
+{
+    X509_OBJECT *obj;
+    int ret = 1;
+
+    if (x == NULL)
+        return 0;
+    obj = (X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    obj->type = X509_LU_X509;
+    obj->data.x509 = x;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+
+    X509_OBJECT_up_ref_count(obj);
+
+    if (X509_OBJECT_retrieve_match(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, X509_R_CERT_ALREADY_IN_HASH_TABLE);
+        ret = 0;
+    } else if (!sk_X509_OBJECT_push(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ret = 0;
+    }
+
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    return ret;
+}
+
+int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
+{
+    X509_OBJECT *obj;
+    int ret = 1;
+
+    if (x == NULL)
+        return 0;
+    obj = (X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    obj->type = X509_LU_CRL;
+    obj->data.crl = x;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+
+    X509_OBJECT_up_ref_count(obj);
+
+    if (X509_OBJECT_retrieve_match(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, X509_R_CERT_ALREADY_IN_HASH_TABLE);
+        ret = 0;
+    } else if (!sk_X509_OBJECT_push(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ret = 0;
+    }
+
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    return ret;
+}
+
+void X509_STORE_set0_additional_untrusted(X509_STORE *ctx,
+                                          STACK_OF(X509) *untrusted) {
+  ctx->additional_untrusted = untrusted;
+}
+
+int X509_OBJECT_up_ref_count(X509_OBJECT *a)
+{
+    switch (a->type) {
+    case X509_LU_X509:
+        X509_up_ref(a->data.x509);
+        break;
+    case X509_LU_CRL:
+        X509_CRL_up_ref(a->data.crl);
+        break;
+    }
+    return 1;
+}
+
+void X509_OBJECT_free_contents(X509_OBJECT *a)
+{
+    switch (a->type) {
+    case X509_LU_X509:
+        X509_free(a->data.x509);
+        break;
+    case X509_LU_CRL:
+        X509_CRL_free(a->data.crl);
+        break;
+    }
+}
+
+int X509_OBJECT_get_type(const X509_OBJECT *a)
+{
+    return a->type;
+}
+
+X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a)
+{
+    if (a == NULL || a->type != X509_LU_X509) {
+        return NULL;
+    }
+    return a->data.x509;
+}
+
+static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
+                               X509_NAME *name, int *pnmatch)
+{
+    X509_OBJECT stmp;
+    X509 x509_s;
+    X509_CINF cinf_s;
+    X509_CRL crl_s;
+    X509_CRL_INFO crl_info_s;
+
+    stmp.type = type;
+    switch (type) {
+    case X509_LU_X509:
+        stmp.data.x509 = &x509_s;
+        x509_s.cert_info = &cinf_s;
+        cinf_s.subject = name;
+        break;
+    case X509_LU_CRL:
+        stmp.data.crl = &crl_s;
+        crl_s.crl = &crl_info_s;
+        crl_info_s.issuer = name;
+        break;
+    default:
+        /* abort(); */
+        return -1;
+    }
+
+    size_t idx;
+    sk_X509_OBJECT_sort(h);
+    if (!sk_X509_OBJECT_find(h, &idx, &stmp))
+        return -1;
+
+    if (pnmatch != NULL) {
+        int tidx;
+        const X509_OBJECT *tobj, *pstmp;
+        *pnmatch = 1;
+        pstmp = &stmp;
+        for (tidx = idx + 1; tidx < (int)sk_X509_OBJECT_num(h); tidx++) {
+            tobj = sk_X509_OBJECT_value(h, tidx);
+            if (x509_object_cmp(&tobj, &pstmp))
+                break;
+            (*pnmatch)++;
+        }
+    }
+
+    return idx;
+}
+
+int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
+                               X509_NAME *name)
+{
+    return x509_object_idx_cnt(h, type, name, NULL);
+}
+
+X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,
+                                             int type, X509_NAME *name)
+{
+    int idx;
+    idx = X509_OBJECT_idx_by_subject(h, type, name);
+    if (idx == -1)
+        return NULL;
+    return sk_X509_OBJECT_value(h, idx);
+}
+
+STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st)
+{
+    return st->objs;
+}
+
+STACK_OF (X509) * X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509) *sk;
+    X509 *x;
+    X509_OBJECT *obj;
+    sk = sk_X509_new_null();
+    if (sk == NULL)
+        return NULL;
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
+    if (idx < 0) {
+        /*
+         * Nothing found in cache: do lookup to possibly add new objects to
+         * cache
+         */
+        X509_OBJECT xobj;
+        CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+        if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj)) {
+            sk_X509_free(sk);
+            return NULL;
+        }
+        X509_OBJECT_free_contents(&xobj);
+        CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+        idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
+        if (idx < 0) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            sk_X509_free(sk);
+            return NULL;
+        }
+    }
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
+        x = obj->data.x509;
+        if (!sk_X509_push(sk, x)) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            sk_X509_pop_free(sk, X509_free);
+            return NULL;
+        }
+        X509_up_ref(x);
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return sk;
+
+}
+
+STACK_OF (X509_CRL) * X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509_CRL) *sk;
+    X509_CRL *x;
+    X509_OBJECT *obj, xobj;
+    sk = sk_X509_CRL_new_null();
+    if (sk == NULL)
+        return NULL;
+
+    /* Always do lookup to possibly add new CRLs to cache. */
+    if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj)) {
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+    X509_OBJECT_free_contents(&xobj);
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
+    if (idx < 0) {
+        CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
+        x = obj->data.crl;
+        X509_CRL_up_ref(x);
+        if (!sk_X509_CRL_push(sk, x)) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            X509_CRL_free(x);
+            sk_X509_CRL_pop_free(sk, X509_CRL_free);
+            return NULL;
+        }
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return sk;
+}
+
+X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
+                                        X509_OBJECT *x)
+{
+    size_t idx, i;
+    X509_OBJECT *obj;
+
+    sk_X509_OBJECT_sort(h);
+    if (!sk_X509_OBJECT_find(h, &idx, x)) {
+        return NULL;
+    }
+    if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
+        return sk_X509_OBJECT_value(h, idx);
+    for (i = idx; i < sk_X509_OBJECT_num(h); i++) {
+        obj = sk_X509_OBJECT_value(h, i);
+        if (x509_object_cmp
+            ((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x))
+            return NULL;
+        if (x->type == X509_LU_X509) {
+            if (!X509_cmp(obj->data.x509, x->data.x509))
+                return obj;
+        } else if (x->type == X509_LU_CRL) {
+            if (!X509_CRL_match(obj->data.crl, x->data.crl))
+                return obj;
+        } else
+            return obj;
+    }
+    return NULL;
+}
+
+/*
+ * Try to get issuer certificate from store. Due to limitations of the API
+ * this can only retrieve a single certificate matching a given subject name.
+ * However it will fill the cache with all matching certificates, so we can
+ * examine the cache for all matches. Return values are: 1 lookup
+ * successful.  0 certificate not found. -1 some other error.
+ */
+int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
+{
+    X509_NAME *xn;
+    X509_OBJECT obj, *pobj;
+    int idx, ret;
+    size_t i;
+    xn = X509_get_issuer_name(x);
+    if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, xn, &obj))
+        return 0;
+    /* If certificate matches all OK */
+    if (ctx->check_issued(ctx, x, obj.data.x509)) {
+        *issuer = obj.data.x509;
+        return 1;
+    }
+    X509_OBJECT_free_contents(&obj);
+
+    /* Else find index of first cert accepted by 'check_issued' */
+    ret = 0;
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
+    if (idx != -1) {            /* should be true as we've had at least one
+                                 * match */
+        /* Look through all matching certs for suitable issuer */
+        for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++) {
+            pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
+            /* See if we've run past the matches */
+            if (pobj->type != X509_LU_X509)
+                break;
+            if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509)))
+                break;
+            if (ctx->check_issued(ctx, x, pobj->data.x509)) {
+                *issuer = pobj->data.x509;
+                X509_OBJECT_up_ref_count(pobj);
+                ret = 1;
+                break;
+            }
+        }
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return ret;
+}
+
+int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
+{
+    return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
+}
+
+int X509_STORE_set_depth(X509_STORE *ctx, int depth)
+{
+    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+    return 1;
+}
+
+int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
+{
+    return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
+}
+
+int X509_STORE_set_trust(X509_STORE *ctx, int trust)
+{
+    return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
+}
+
+int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
+{
+    return X509_VERIFY_PARAM_set1(ctx->param, param);
+}
+
+X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx)
+{
+    return ctx->param;
+}
+
+void X509_STORE_set_verify(X509_STORE *ctx, X509_STORE_CTX_verify_fn verify)
+{
+    ctx->verify = verify;
+}
+
+X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx)
+{
+    return ctx->verify;
+}
+
+void X509_STORE_set_verify_cb(X509_STORE *ctx,
+                              X509_STORE_CTX_verify_cb verify_cb)
+{
+    ctx->verify_cb = verify_cb;
+}
+
+X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(X509_STORE *ctx)
+{
+    return ctx->verify_cb;
+}
+
+void X509_STORE_set_get_issuer(X509_STORE *ctx,
+                               X509_STORE_CTX_get_issuer_fn get_issuer)
+{
+    ctx->get_issuer = get_issuer;
+}
+
+X509_STORE_CTX_get_issuer_fn X509_STORE_get_get_issuer(X509_STORE *ctx)
+{
+    return ctx->get_issuer;
+}
+
+void X509_STORE_set_check_issued(X509_STORE *ctx,
+                                 X509_STORE_CTX_check_issued_fn check_issued)
+{
+    ctx->check_issued = check_issued;
+}
+
+X509_STORE_CTX_check_issued_fn X509_STORE_get_check_issued(X509_STORE *ctx)
+{
+    return ctx->check_issued;
+}
+
+void X509_STORE_set_check_revocation(X509_STORE *ctx,
+                                     X509_STORE_CTX_check_revocation_fn check_revocation)
+{
+    ctx->check_revocation = check_revocation;
+}
+
+X509_STORE_CTX_check_revocation_fn X509_STORE_get_check_revocation(X509_STORE *ctx)
+{
+    return ctx->check_revocation;
+}
+
+void X509_STORE_set_get_crl(X509_STORE *ctx,
+                            X509_STORE_CTX_get_crl_fn get_crl)
+{
+    ctx->get_crl = get_crl;
+}
+
+X509_STORE_CTX_get_crl_fn X509_STORE_get_get_crl(X509_STORE *ctx)
+{
+    return ctx->get_crl;
+}
+
+void X509_STORE_set_check_crl(X509_STORE *ctx,
+                              X509_STORE_CTX_check_crl_fn check_crl)
+{
+    ctx->check_crl = check_crl;
+}
+
+X509_STORE_CTX_check_crl_fn X509_STORE_get_check_crl(X509_STORE *ctx)
+{
+    return ctx->check_crl;
+}
+
+void X509_STORE_set_cert_crl(X509_STORE *ctx,
+                             X509_STORE_CTX_cert_crl_fn cert_crl)
+{
+    ctx->cert_crl = cert_crl;
+}
+
+X509_STORE_CTX_cert_crl_fn X509_STORE_get_cert_crl(X509_STORE *ctx)
+{
+    return ctx->cert_crl;
+}
+
+void X509_STORE_set_lookup_certs(X509_STORE *ctx,
+                                 X509_STORE_CTX_lookup_certs_fn lookup_certs)
+{
+    ctx->lookup_certs = lookup_certs;
+}
+
+X509_STORE_CTX_lookup_certs_fn X509_STORE_get_lookup_certs(X509_STORE *ctx)
+{
+    return ctx->lookup_certs;
+}
+
+void X509_STORE_set_lookup_crls(X509_STORE *ctx,
+                                X509_STORE_CTX_lookup_crls_fn lookup_crls)
+{
+    ctx->lookup_crls = lookup_crls;
+}
+
+X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(X509_STORE *ctx)
+{
+    return ctx->lookup_crls;
+}
+
+void X509_STORE_set_cleanup(X509_STORE *ctx,
+                            X509_STORE_CTX_cleanup_fn ctx_cleanup)
+{
+    ctx->cleanup = ctx_cleanup;
+}
+
+X509_STORE_CTX_cleanup_fn X509_STORE_get_cleanup(X509_STORE *ctx)
+{
+    return ctx->cleanup;
+}
+
+X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx)
+{
+    return ctx->ctx;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c.grpc_back
new file mode 100644
index 0000000..4046c3e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_lu.c.grpc_back	
@@ -0,0 +1,834 @@
+/* crypto/x509/x509_lu.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
+{
+    X509_LOOKUP *ret;
+
+    ret = (X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
+    if (ret == NULL)
+        return NULL;
+
+    ret->init = 0;
+    ret->skip = 0;
+    ret->method = method;
+    ret->method_data = NULL;
+    ret->store_ctx = NULL;
+    if ((method->new_item != NULL) && !method->new_item(ret)) {
+        OPENSSL_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+void X509_LOOKUP_free(X509_LOOKUP *ctx)
+{
+    if (ctx == NULL)
+        return;
+    if ((ctx->method != NULL) && (ctx->method->free != NULL))
+        (*ctx->method->free) (ctx);
+    OPENSSL_free(ctx);
+}
+
+int X509_LOOKUP_init(X509_LOOKUP *ctx)
+{
+    if (ctx->method == NULL)
+        return 0;
+    if (ctx->method->init != NULL)
+        return ctx->method->init(ctx);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
+{
+    if (ctx->method == NULL)
+        return 0;
+    if (ctx->method->shutdown != NULL)
+        return ctx->method->shutdown(ctx);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
+                     char **ret)
+{
+    if (ctx->method == NULL)
+        return -1;
+    if (ctx->method->ctrl != NULL)
+        return ctx->method->ctrl(ctx, cmd, argc, argl, ret);
+    else
+        return 1;
+}
+
+int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
+                           X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
+        return 0;
+    if (ctx->skip)
+        return 0;
+    return ctx->method->get_by_subject(ctx, type, name, ret) > 0;
+}
+
+int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
+                                 ASN1_INTEGER *serial, X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_issuer_serial == NULL))
+        return 0;
+    return ctx->method->get_by_issuer_serial(ctx, type, name, serial, ret) > 0;
+}
+
+int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+                               unsigned char *bytes, int len,
+                               X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
+        return 0;
+    return ctx->method->get_by_fingerprint(ctx, type, bytes, len, ret) > 0;
+}
+
+int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
+                         X509_OBJECT *ret)
+{
+    if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
+        return 0;
+    return ctx->method->get_by_alias(ctx, type, str, len, ret) > 0;
+}
+
+static int x509_object_cmp(const X509_OBJECT **a, const X509_OBJECT **b)
+{
+    int ret;
+
+    ret = ((*a)->type - (*b)->type);
+    if (ret)
+        return ret;
+    switch ((*a)->type) {
+    case X509_LU_X509:
+        ret = X509_subject_name_cmp((*a)->data.x509, (*b)->data.x509);
+        break;
+    case X509_LU_CRL:
+        ret = X509_CRL_cmp((*a)->data.crl, (*b)->data.crl);
+        break;
+    default:
+        /* abort(); */
+        return 0;
+    }
+    return ret;
+}
+
+X509_STORE *X509_STORE_new(void)
+{
+    X509_STORE *ret;
+
+    if ((ret = (X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL)
+        return NULL;
+    OPENSSL_memset(ret, 0, sizeof(*ret));
+    CRYPTO_MUTEX_init(&ret->objs_lock);
+    ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
+    if (ret->objs == NULL)
+        goto err;
+    ret->cache = 1;
+    ret->get_cert_methods = sk_X509_LOOKUP_new_null();
+    if (ret->get_cert_methods == NULL)
+        goto err;
+    ret->param = X509_VERIFY_PARAM_new();
+    if (ret->param == NULL)
+        goto err;
+
+    ret->references = 1;
+    return ret;
+ err:
+    if (ret) {
+        CRYPTO_MUTEX_cleanup(&ret->objs_lock);
+        if (ret->param)
+            X509_VERIFY_PARAM_free(ret->param);
+        if (ret->get_cert_methods)
+            sk_X509_LOOKUP_free(ret->get_cert_methods);
+        if (ret->objs)
+            sk_X509_OBJECT_free(ret->objs);
+        OPENSSL_free(ret);
+    }
+    return NULL;
+}
+
+int X509_STORE_up_ref(X509_STORE *store)
+{
+    CRYPTO_refcount_inc(&store->references);
+    return 1;
+}
+
+static void cleanup(X509_OBJECT *a)
+{
+    if (a == NULL) {
+        return;
+    }
+    if (a->type == X509_LU_X509) {
+        X509_free(a->data.x509);
+    } else if (a->type == X509_LU_CRL) {
+        X509_CRL_free(a->data.crl);
+    } else {
+        /* abort(); */
+    }
+
+    OPENSSL_free(a);
+}
+
+void X509_STORE_free(X509_STORE *vfy)
+{
+    size_t j;
+    STACK_OF(X509_LOOKUP) *sk;
+    X509_LOOKUP *lu;
+
+    if (vfy == NULL)
+        return;
+
+    if (!CRYPTO_refcount_dec_and_test_zero(&vfy->references)) {
+        return;
+    }
+
+    CRYPTO_MUTEX_cleanup(&vfy->objs_lock);
+
+    sk = vfy->get_cert_methods;
+    for (j = 0; j < sk_X509_LOOKUP_num(sk); j++) {
+        lu = sk_X509_LOOKUP_value(sk, j);
+        X509_LOOKUP_shutdown(lu);
+        X509_LOOKUP_free(lu);
+    }
+    sk_X509_LOOKUP_free(sk);
+    sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
+
+    if (vfy->param)
+        X509_VERIFY_PARAM_free(vfy->param);
+    OPENSSL_free(vfy);
+}
+
+X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
+{
+    size_t i;
+    STACK_OF(X509_LOOKUP) *sk;
+    X509_LOOKUP *lu;
+
+    sk = v->get_cert_methods;
+    for (i = 0; i < sk_X509_LOOKUP_num(sk); i++) {
+        lu = sk_X509_LOOKUP_value(sk, i);
+        if (m == lu->method) {
+            return lu;
+        }
+    }
+    /* a new one */
+    lu = X509_LOOKUP_new(m);
+    if (lu == NULL)
+        return NULL;
+    else {
+        lu->store_ctx = v;
+        if (sk_X509_LOOKUP_push(v->get_cert_methods, lu))
+            return lu;
+        else {
+            X509_LOOKUP_free(lu);
+            return NULL;
+        }
+    }
+}
+
+int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
+                              X509_OBJECT *ret)
+{
+    X509_STORE *ctx = vs->ctx;
+    X509_LOOKUP *lu;
+    X509_OBJECT stmp, *tmp;
+    int i;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+    tmp = X509_OBJECT_retrieve_by_subject(ctx->objs, type, name);
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    if (tmp == NULL || type == X509_LU_CRL) {
+        for (i = 0; i < (int)sk_X509_LOOKUP_num(ctx->get_cert_methods); i++) {
+            lu = sk_X509_LOOKUP_value(ctx->get_cert_methods, i);
+            if (X509_LOOKUP_by_subject(lu, type, name, &stmp)) {
+                tmp = &stmp;
+                break;
+            }
+        }
+        if (tmp == NULL)
+            return 0;
+    }
+
+    /*
+     * if (ret->data.ptr != NULL) X509_OBJECT_free_contents(ret);
+     */
+
+    ret->type = tmp->type;
+    ret->data.ptr = tmp->data.ptr;
+
+    X509_OBJECT_up_ref_count(ret);
+
+    return 1;
+}
+
+int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
+{
+    X509_OBJECT *obj;
+    int ret = 1;
+
+    if (x == NULL)
+        return 0;
+    obj = (X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    obj->type = X509_LU_X509;
+    obj->data.x509 = x;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+
+    X509_OBJECT_up_ref_count(obj);
+
+    if (X509_OBJECT_retrieve_match(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, X509_R_CERT_ALREADY_IN_HASH_TABLE);
+        ret = 0;
+    } else if (!sk_X509_OBJECT_push(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ret = 0;
+    }
+
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    return ret;
+}
+
+int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
+{
+    X509_OBJECT *obj;
+    int ret = 1;
+
+    if (x == NULL)
+        return 0;
+    obj = (X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    obj->type = X509_LU_CRL;
+    obj->data.crl = x;
+
+    CRYPTO_MUTEX_lock_write(&ctx->objs_lock);
+
+    X509_OBJECT_up_ref_count(obj);
+
+    if (X509_OBJECT_retrieve_match(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, X509_R_CERT_ALREADY_IN_HASH_TABLE);
+        ret = 0;
+    } else if (!sk_X509_OBJECT_push(ctx->objs, obj)) {
+        X509_OBJECT_free_contents(obj);
+        OPENSSL_free(obj);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ret = 0;
+    }
+
+    CRYPTO_MUTEX_unlock_write(&ctx->objs_lock);
+
+    return ret;
+}
+
+void X509_STORE_set0_additional_untrusted(X509_STORE *ctx,
+                                          STACK_OF(X509) *untrusted) {
+  ctx->additional_untrusted = untrusted;
+}
+
+int X509_OBJECT_up_ref_count(X509_OBJECT *a)
+{
+    switch (a->type) {
+    case X509_LU_X509:
+        X509_up_ref(a->data.x509);
+        break;
+    case X509_LU_CRL:
+        X509_CRL_up_ref(a->data.crl);
+        break;
+    }
+    return 1;
+}
+
+void X509_OBJECT_free_contents(X509_OBJECT *a)
+{
+    switch (a->type) {
+    case X509_LU_X509:
+        X509_free(a->data.x509);
+        break;
+    case X509_LU_CRL:
+        X509_CRL_free(a->data.crl);
+        break;
+    }
+}
+
+int X509_OBJECT_get_type(const X509_OBJECT *a)
+{
+    return a->type;
+}
+
+X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a)
+{
+    if (a == NULL || a->type != X509_LU_X509) {
+        return NULL;
+    }
+    return a->data.x509;
+}
+
+static int x509_object_idx_cnt(STACK_OF(X509_OBJECT) *h, int type,
+                               X509_NAME *name, int *pnmatch)
+{
+    X509_OBJECT stmp;
+    X509 x509_s;
+    X509_CINF cinf_s;
+    X509_CRL crl_s;
+    X509_CRL_INFO crl_info_s;
+
+    stmp.type = type;
+    switch (type) {
+    case X509_LU_X509:
+        stmp.data.x509 = &x509_s;
+        x509_s.cert_info = &cinf_s;
+        cinf_s.subject = name;
+        break;
+    case X509_LU_CRL:
+        stmp.data.crl = &crl_s;
+        crl_s.crl = &crl_info_s;
+        crl_info_s.issuer = name;
+        break;
+    default:
+        /* abort(); */
+        return -1;
+    }
+
+    size_t idx;
+    sk_X509_OBJECT_sort(h);
+    if (!sk_X509_OBJECT_find(h, &idx, &stmp))
+        return -1;
+
+    if (pnmatch != NULL) {
+        int tidx;
+        const X509_OBJECT *tobj, *pstmp;
+        *pnmatch = 1;
+        pstmp = &stmp;
+        for (tidx = idx + 1; tidx < (int)sk_X509_OBJECT_num(h); tidx++) {
+            tobj = sk_X509_OBJECT_value(h, tidx);
+            if (x509_object_cmp(&tobj, &pstmp))
+                break;
+            (*pnmatch)++;
+        }
+    }
+
+    return idx;
+}
+
+int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
+                               X509_NAME *name)
+{
+    return x509_object_idx_cnt(h, type, name, NULL);
+}
+
+X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,
+                                             int type, X509_NAME *name)
+{
+    int idx;
+    idx = X509_OBJECT_idx_by_subject(h, type, name);
+    if (idx == -1)
+        return NULL;
+    return sk_X509_OBJECT_value(h, idx);
+}
+
+STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st)
+{
+    return st->objs;
+}
+
+STACK_OF (X509) * X509_STORE_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509) *sk;
+    X509 *x;
+    X509_OBJECT *obj;
+    sk = sk_X509_new_null();
+    if (sk == NULL)
+        return NULL;
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
+    if (idx < 0) {
+        /*
+         * Nothing found in cache: do lookup to possibly add new objects to
+         * cache
+         */
+        X509_OBJECT xobj;
+        CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+        if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, nm, &xobj)) {
+            sk_X509_free(sk);
+            return NULL;
+        }
+        X509_OBJECT_free_contents(&xobj);
+        CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+        idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
+        if (idx < 0) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            sk_X509_free(sk);
+            return NULL;
+        }
+    }
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
+        x = obj->data.x509;
+        if (!sk_X509_push(sk, x)) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            sk_X509_pop_free(sk, X509_free);
+            return NULL;
+        }
+        X509_up_ref(x);
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return sk;
+
+}
+
+STACK_OF (X509_CRL) * X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
+{
+    int i, idx, cnt;
+    STACK_OF(X509_CRL) *sk;
+    X509_CRL *x;
+    X509_OBJECT *obj, xobj;
+    sk = sk_X509_CRL_new_null();
+    if (sk == NULL)
+        return NULL;
+
+    /* Always do lookup to possibly add new CRLs to cache. */
+    if (!X509_STORE_get_by_subject(ctx, X509_LU_CRL, nm, &xobj)) {
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+    X509_OBJECT_free_contents(&xobj);
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
+    if (idx < 0) {
+        CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+        sk_X509_CRL_free(sk);
+        return NULL;
+    }
+
+    for (i = 0; i < cnt; i++, idx++) {
+        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
+        x = obj->data.crl;
+        X509_CRL_up_ref(x);
+        if (!sk_X509_CRL_push(sk, x)) {
+            CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+            X509_CRL_free(x);
+            sk_X509_CRL_pop_free(sk, X509_CRL_free);
+            return NULL;
+        }
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return sk;
+}
+
+X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
+                                        X509_OBJECT *x)
+{
+    size_t idx, i;
+    X509_OBJECT *obj;
+
+    sk_X509_OBJECT_sort(h);
+    if (!sk_X509_OBJECT_find(h, &idx, x)) {
+        return NULL;
+    }
+    if ((x->type != X509_LU_X509) && (x->type != X509_LU_CRL))
+        return sk_X509_OBJECT_value(h, idx);
+    for (i = idx; i < sk_X509_OBJECT_num(h); i++) {
+        obj = sk_X509_OBJECT_value(h, i);
+        if (x509_object_cmp
+            ((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x))
+            return NULL;
+        if (x->type == X509_LU_X509) {
+            if (!X509_cmp(obj->data.x509, x->data.x509))
+                return obj;
+        } else if (x->type == X509_LU_CRL) {
+            if (!X509_CRL_match(obj->data.crl, x->data.crl))
+                return obj;
+        } else
+            return obj;
+    }
+    return NULL;
+}
+
+/*
+ * Try to get issuer certificate from store. Due to limitations of the API
+ * this can only retrieve a single certificate matching a given subject name.
+ * However it will fill the cache with all matching certificates, so we can
+ * examine the cache for all matches. Return values are: 1 lookup
+ * successful.  0 certificate not found. -1 some other error.
+ */
+int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
+{
+    X509_NAME *xn;
+    X509_OBJECT obj, *pobj;
+    int idx, ret;
+    size_t i;
+    xn = X509_get_issuer_name(x);
+    if (!X509_STORE_get_by_subject(ctx, X509_LU_X509, xn, &obj))
+        return 0;
+    /* If certificate matches all OK */
+    if (ctx->check_issued(ctx, x, obj.data.x509)) {
+        *issuer = obj.data.x509;
+        return 1;
+    }
+    X509_OBJECT_free_contents(&obj);
+
+    /* Else find index of first cert accepted by 'check_issued' */
+    ret = 0;
+    CRYPTO_MUTEX_lock_write(&ctx->ctx->objs_lock);
+    idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
+    if (idx != -1) {            /* should be true as we've had at least one
+                                 * match */
+        /* Look through all matching certs for suitable issuer */
+        for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++) {
+            pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
+            /* See if we've run past the matches */
+            if (pobj->type != X509_LU_X509)
+                break;
+            if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509)))
+                break;
+            if (ctx->check_issued(ctx, x, pobj->data.x509)) {
+                *issuer = pobj->data.x509;
+                X509_OBJECT_up_ref_count(pobj);
+                ret = 1;
+                break;
+            }
+        }
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->ctx->objs_lock);
+    return ret;
+}
+
+int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags)
+{
+    return X509_VERIFY_PARAM_set_flags(ctx->param, flags);
+}
+
+int X509_STORE_set_depth(X509_STORE *ctx, int depth)
+{
+    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+    return 1;
+}
+
+int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
+{
+    return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
+}
+
+int X509_STORE_set_trust(X509_STORE *ctx, int trust)
+{
+    return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
+}
+
+int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *param)
+{
+    return X509_VERIFY_PARAM_set1(ctx->param, param);
+}
+
+X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx)
+{
+    return ctx->param;
+}
+
+void X509_STORE_set_verify(X509_STORE *ctx, X509_STORE_CTX_verify_fn verify)
+{
+    ctx->verify = verify;
+}
+
+X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx)
+{
+    return ctx->verify;
+}
+
+void X509_STORE_set_verify_cb(X509_STORE *ctx,
+                              X509_STORE_CTX_verify_cb verify_cb)
+{
+    ctx->verify_cb = verify_cb;
+}
+
+X509_STORE_CTX_verify_cb X509_STORE_get_verify_cb(X509_STORE *ctx)
+{
+    return ctx->verify_cb;
+}
+
+void X509_STORE_set_get_issuer(X509_STORE *ctx,
+                               X509_STORE_CTX_get_issuer_fn get_issuer)
+{
+    ctx->get_issuer = get_issuer;
+}
+
+X509_STORE_CTX_get_issuer_fn X509_STORE_get_get_issuer(X509_STORE *ctx)
+{
+    return ctx->get_issuer;
+}
+
+void X509_STORE_set_check_issued(X509_STORE *ctx,
+                                 X509_STORE_CTX_check_issued_fn check_issued)
+{
+    ctx->check_issued = check_issued;
+}
+
+X509_STORE_CTX_check_issued_fn X509_STORE_get_check_issued(X509_STORE *ctx)
+{
+    return ctx->check_issued;
+}
+
+void X509_STORE_set_check_revocation(X509_STORE *ctx,
+                                     X509_STORE_CTX_check_revocation_fn check_revocation)
+{
+    ctx->check_revocation = check_revocation;
+}
+
+X509_STORE_CTX_check_revocation_fn X509_STORE_get_check_revocation(X509_STORE *ctx)
+{
+    return ctx->check_revocation;
+}
+
+void X509_STORE_set_get_crl(X509_STORE *ctx,
+                            X509_STORE_CTX_get_crl_fn get_crl)
+{
+    ctx->get_crl = get_crl;
+}
+
+X509_STORE_CTX_get_crl_fn X509_STORE_get_get_crl(X509_STORE *ctx)
+{
+    return ctx->get_crl;
+}
+
+void X509_STORE_set_check_crl(X509_STORE *ctx,
+                              X509_STORE_CTX_check_crl_fn check_crl)
+{
+    ctx->check_crl = check_crl;
+}
+
+X509_STORE_CTX_check_crl_fn X509_STORE_get_check_crl(X509_STORE *ctx)
+{
+    return ctx->check_crl;
+}
+
+void X509_STORE_set_cert_crl(X509_STORE *ctx,
+                             X509_STORE_CTX_cert_crl_fn cert_crl)
+{
+    ctx->cert_crl = cert_crl;
+}
+
+X509_STORE_CTX_cert_crl_fn X509_STORE_get_cert_crl(X509_STORE *ctx)
+{
+    return ctx->cert_crl;
+}
+
+void X509_STORE_set_lookup_certs(X509_STORE *ctx,
+                                 X509_STORE_CTX_lookup_certs_fn lookup_certs)
+{
+    ctx->lookup_certs = lookup_certs;
+}
+
+X509_STORE_CTX_lookup_certs_fn X509_STORE_get_lookup_certs(X509_STORE *ctx)
+{
+    return ctx->lookup_certs;
+}
+
+void X509_STORE_set_lookup_crls(X509_STORE *ctx,
+                                X509_STORE_CTX_lookup_crls_fn lookup_crls)
+{
+    ctx->lookup_crls = lookup_crls;
+}
+
+X509_STORE_CTX_lookup_crls_fn X509_STORE_get_lookup_crls(X509_STORE *ctx)
+{
+    return ctx->lookup_crls;
+}
+
+void X509_STORE_set_cleanup(X509_STORE *ctx,
+                            X509_STORE_CTX_cleanup_fn ctx_cleanup)
+{
+    ctx->cleanup = ctx_cleanup;
+}
+
+X509_STORE_CTX_cleanup_fn X509_STORE_get_cleanup(X509_STORE *ctx)
+{
+    return ctx->cleanup;
+}
+
+X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx)
+{
+    return ctx->ctx;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c
new file mode 100644
index 0000000..5721779
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c	
@@ -0,0 +1,198 @@
+/* crypto/x509/x509_obj.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+#include "../internal.h"
+
+
+/*
+ * Limit to ensure we don't overflow: much greater than
+ * anything enountered in practice.
+ */
+
+#define NAME_ONELINE_MAX    (1024 * 1024)
+
+char *X509_NAME_oneline(X509_NAME *a, char *buf, int len)
+{
+    X509_NAME_ENTRY *ne;
+    size_t i;
+    int n, lold, l, l1, l2, num, j, type;
+    const char *s;
+    char *p;
+    unsigned char *q;
+    BUF_MEM *b = NULL;
+    static const char hex[17] = "0123456789ABCDEF";
+    int gs_doit[4];
+    char tmp_buf[80];
+
+    if (buf == NULL) {
+        if ((b = BUF_MEM_new()) == NULL)
+            goto err;
+        if (!BUF_MEM_grow(b, 200))
+            goto err;
+        b->data[0] = '\0';
+        len = 200;
+    } else if (len <= 0) {
+        return NULL;
+    }
+    if (a == NULL) {
+        if (b) {
+            buf = b->data;
+            OPENSSL_free(b);
+        }
+        OPENSSL_strlcpy(buf, "NO X509_NAME", len);
+        return buf;
+    }
+
+    len--;                      /* space for '\0' */
+    l = 0;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        ne = sk_X509_NAME_ENTRY_value(a->entries, i);
+        n = OBJ_obj2nid(ne->object);
+        if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
+            i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
+            s = tmp_buf;
+        }
+        l1 = strlen(s);
+
+        type = ne->value->type;
+        num = ne->value->length;
+        if (num > NAME_ONELINE_MAX) {
+            OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
+            goto end;
+        }
+        q = ne->value->data;
+
+        if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
+            gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
+            for (j = 0; j < num; j++)
+                if (q[j] != 0)
+                    gs_doit[j & 3] = 1;
+
+            if (gs_doit[0] | gs_doit[1] | gs_doit[2])
+                gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
+            else {
+                gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
+                gs_doit[3] = 1;
+            }
+        } else
+            gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
+
+        for (l2 = j = 0; j < num; j++) {
+            if (!gs_doit[j & 3])
+                continue;
+            l2++;
+            if ((q[j] < ' ') || (q[j] > '~'))
+                l2 += 3;
+        }
+
+        lold = l;
+        l += 1 + l1 + 1 + l2;
+        if (l > NAME_ONELINE_MAX) {
+            OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
+            goto end;
+        }
+        if (b != NULL) {
+            if (!BUF_MEM_grow(b, l + 1))
+                goto err;
+            p = &(b->data[lold]);
+        } else if (l > len) {
+            break;
+        } else
+            p = &(buf[lold]);
+        *(p++) = '/';
+        OPENSSL_memcpy(p, s, (unsigned int)l1);
+        p += l1;
+        *(p++) = '=';
+
+        q = ne->value->data;
+
+        for (j = 0; j < num; j++) {
+            if (!gs_doit[j & 3])
+                continue;
+            n = q[j];
+            if ((n < ' ') || (n > '~')) {
+                *(p++) = '\\';
+                *(p++) = 'x';
+                *(p++) = hex[(n >> 4) & 0x0f];
+                *(p++) = hex[n & 0x0f];
+            } else
+                *(p++) = n;
+        }
+        *p = '\0';
+    }
+    if (b != NULL) {
+        p = b->data;
+        OPENSSL_free(b);
+    } else
+        p = buf;
+    if (i == 0)
+        *p = '\0';
+    return (p);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ end:
+    BUF_MEM_free(b);
+    return (NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c.grpc_back
new file mode 100644
index 0000000..520b7a0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_obj.c.grpc_back	
@@ -0,0 +1,198 @@
+/* crypto/x509/x509_obj.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+#include "../internal.h"
+
+
+/*
+ * Limit to ensure we don't overflow: much greater than
+ * anything enountered in practice.
+ */
+
+#define NAME_ONELINE_MAX    (1024 * 1024)
+
+char *X509_NAME_oneline(X509_NAME *a, char *buf, int len)
+{
+    X509_NAME_ENTRY *ne;
+    size_t i;
+    int n, lold, l, l1, l2, num, j, type;
+    const char *s;
+    char *p;
+    unsigned char *q;
+    BUF_MEM *b = NULL;
+    static const char hex[17] = "0123456789ABCDEF";
+    int gs_doit[4];
+    char tmp_buf[80];
+
+    if (buf == NULL) {
+        if ((b = BUF_MEM_new()) == NULL)
+            goto err;
+        if (!BUF_MEM_grow(b, 200))
+            goto err;
+        b->data[0] = '\0';
+        len = 200;
+    } else if (len <= 0) {
+        return NULL;
+    }
+    if (a == NULL) {
+        if (b) {
+            buf = b->data;
+            OPENSSL_free(b);
+        }
+        OPENSSL_strlcpy(buf, "NO X509_NAME", len);
+        return buf;
+    }
+
+    len--;                      /* space for '\0' */
+    l = 0;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        ne = sk_X509_NAME_ENTRY_value(a->entries, i);
+        n = OBJ_obj2nid(ne->object);
+        if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
+            i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
+            s = tmp_buf;
+        }
+        l1 = strlen(s);
+
+        type = ne->value->type;
+        num = ne->value->length;
+        if (num > NAME_ONELINE_MAX) {
+            OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
+            goto end;
+        }
+        q = ne->value->data;
+
+        if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
+            gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
+            for (j = 0; j < num; j++)
+                if (q[j] != 0)
+                    gs_doit[j & 3] = 1;
+
+            if (gs_doit[0] | gs_doit[1] | gs_doit[2])
+                gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
+            else {
+                gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
+                gs_doit[3] = 1;
+            }
+        } else
+            gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
+
+        for (l2 = j = 0; j < num; j++) {
+            if (!gs_doit[j & 3])
+                continue;
+            l2++;
+            if ((q[j] < ' ') || (q[j] > '~'))
+                l2 += 3;
+        }
+
+        lold = l;
+        l += 1 + l1 + 1 + l2;
+        if (l > NAME_ONELINE_MAX) {
+            OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
+            goto end;
+        }
+        if (b != NULL) {
+            if (!BUF_MEM_grow(b, l + 1))
+                goto err;
+            p = &(b->data[lold]);
+        } else if (l > len) {
+            break;
+        } else
+            p = &(buf[lold]);
+        *(p++) = '/';
+        OPENSSL_memcpy(p, s, (unsigned int)l1);
+        p += l1;
+        *(p++) = '=';
+
+        q = ne->value->data;
+
+        for (j = 0; j < num; j++) {
+            if (!gs_doit[j & 3])
+                continue;
+            n = q[j];
+            if ((n < ' ') || (n > '~')) {
+                *(p++) = '\\';
+                *(p++) = 'x';
+                *(p++) = hex[(n >> 4) & 0x0f];
+                *(p++) = hex[n & 0x0f];
+            } else
+                *(p++) = n;
+        }
+        *p = '\0';
+    }
+    if (b != NULL) {
+        p = b->data;
+        OPENSSL_free(b);
+    } else
+        p = buf;
+    if (i == 0)
+        *p = '\0';
+    return (p);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ end:
+    BUF_MEM_free(b);
+    return (NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c
new file mode 100644
index 0000000..24bf53a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c	
@@ -0,0 +1,116 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+X509 *X509_REQ_to_X509(X509_REQ *r, int days, EVP_PKEY *pkey)
+{
+    X509 *ret = NULL;
+    X509_CINF *xi = NULL;
+    X509_NAME *xn;
+    EVP_PKEY *pubkey = NULL;
+    int res;
+
+    if ((ret = X509_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    /* duplicate the request */
+    xi = ret->cert_info;
+
+    if (sk_X509_ATTRIBUTE_num(r->req_info->attributes) != 0) {
+        if ((xi->version = M_ASN1_INTEGER_new()) == NULL)
+            goto err;
+        if (!ASN1_INTEGER_set(xi->version, 2))
+            goto err;
+        /*
+         * xi->extensions=ri->attributes; <- bad, should not ever be done
+         * ri->attributes=NULL;
+         */
+    }
+
+    xn = X509_REQ_get_subject_name(r);
+    if (X509_set_subject_name(ret, xn) == 0)
+        goto err;
+    if (X509_set_issuer_name(ret, xn) == 0)
+        goto err;
+
+    if (X509_gmtime_adj(xi->validity->notBefore, 0) == NULL)
+        goto err;
+    if (X509_gmtime_adj(xi->validity->notAfter, (long)60 * 60 * 24 * days) ==
+        NULL)
+        goto err;
+
+    pubkey = X509_REQ_get_pubkey(r);
+    res = X509_set_pubkey(ret, pubkey);
+    EVP_PKEY_free(pubkey);
+
+    if (!res || !X509_sign(ret, pkey, EVP_md5()))
+        goto err;
+    if (0) {
+ err:
+        X509_free(ret);
+        ret = NULL;
+    }
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c.grpc_back
new file mode 100644
index 0000000..723bd49
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_r2x.c.grpc_back	
@@ -0,0 +1,116 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/bn.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+X509 *X509_REQ_to_X509(X509_REQ *r, int days, EVP_PKEY *pkey)
+{
+    X509 *ret = NULL;
+    X509_CINF *xi = NULL;
+    X509_NAME *xn;
+    EVP_PKEY *pubkey = NULL;
+    int res;
+
+    if ((ret = X509_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    /* duplicate the request */
+    xi = ret->cert_info;
+
+    if (sk_X509_ATTRIBUTE_num(r->req_info->attributes) != 0) {
+        if ((xi->version = M_ASN1_INTEGER_new()) == NULL)
+            goto err;
+        if (!ASN1_INTEGER_set(xi->version, 2))
+            goto err;
+        /*
+         * xi->extensions=ri->attributes; <- bad, should not ever be done
+         * ri->attributes=NULL;
+         */
+    }
+
+    xn = X509_REQ_get_subject_name(r);
+    if (X509_set_subject_name(ret, xn) == 0)
+        goto err;
+    if (X509_set_issuer_name(ret, xn) == 0)
+        goto err;
+
+    if (X509_gmtime_adj(xi->validity->notBefore, 0) == NULL)
+        goto err;
+    if (X509_gmtime_adj(xi->validity->notAfter, (long)60 * 60 * 24 * days) ==
+        NULL)
+        goto err;
+
+    pubkey = X509_REQ_get_pubkey(r);
+    res = X509_set_pubkey(ret, pubkey);
+    EVP_PKEY_free(pubkey);
+
+    if (!res || !X509_sign(ret, pkey, EVP_md5()))
+        goto err;
+    if (0) {
+ err:
+        X509_free(ret);
+        ret = NULL;
+    }
+    return (ret);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c
new file mode 100644
index 0000000..4478c3c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c	
@@ -0,0 +1,341 @@
+/* crypto/x509/x509_req.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/x509.h>
+
+X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    X509_REQ *ret;
+    X509_REQ_INFO *ri;
+    int i;
+    EVP_PKEY *pktmp;
+
+    ret = X509_REQ_new();
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    ri = ret->req_info;
+
+    ri->version->length = 1;
+    ri->version->data = (unsigned char *)OPENSSL_malloc(1);
+    if (ri->version->data == NULL)
+        goto err;
+    ri->version->data[0] = 0;   /* version == 0 */
+
+    if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
+        goto err;
+
+    pktmp = X509_get_pubkey(x);
+    if (pktmp == NULL)
+        goto err;
+    i = X509_REQ_set_pubkey(ret, pktmp);
+    EVP_PKEY_free(pktmp);
+    if (!i)
+        goto err;
+
+    if (pkey != NULL) {
+        if (!X509_REQ_sign(ret, pkey, md))
+            goto err;
+    }
+    return (ret);
+ err:
+    X509_REQ_free(ret);
+    return (NULL);
+}
+
+EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
+{
+    if ((req == NULL) || (req->req_info == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(req->req_info->pubkey));
+}
+
+int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
+{
+    EVP_PKEY *xk = NULL;
+    int ok = 0;
+
+    xk = X509_REQ_get_pubkey(x);
+    switch (EVP_PKEY_cmp(xk, k)) {
+    case 1:
+        ok = 1;
+        break;
+    case 0:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+        break;
+    case -1:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+        break;
+    case -2:
+        if (k->type == EVP_PKEY_EC) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_EC_LIB);
+            break;
+        }
+        if (k->type == EVP_PKEY_DH) {
+            /* No idea */
+            OPENSSL_PUT_ERROR(X509, X509_R_CANT_CHECK_DH_KEY);
+            break;
+        }
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    }
+
+    EVP_PKEY_free(xk);
+    return (ok);
+}
+
+/*
+ * It seems several organisations had the same idea of including a list of
+ * extensions in a certificate request. There are at least two OIDs that are
+ * used and there may be more: so the list is configurable.
+ */
+
+static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
+
+static const int *ext_nids = ext_nid_list;
+
+int X509_REQ_extension_nid(int req_nid)
+{
+    int i, nid;
+    for (i = 0;; i++) {
+        nid = ext_nids[i];
+        if (nid == NID_undef)
+            return 0;
+        else if (req_nid == nid)
+            return 1;
+    }
+}
+
+const int *X509_REQ_get_extension_nids(void)
+{
+    return ext_nids;
+}
+
+void X509_REQ_set_extension_nids(const int *nids)
+{
+    ext_nids = nids;
+}
+
+STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
+{
+    X509_ATTRIBUTE *attr;
+    ASN1_TYPE *ext = NULL;
+    int idx;
+    const int *pnid;
+    const unsigned char *p;
+
+    if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
+        return (NULL);
+    for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
+        idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
+        if (idx == -1)
+            continue;
+        attr = X509_REQ_get_attr(req, idx);
+        if (attr->single)
+            ext = attr->value.single;
+        else if (sk_ASN1_TYPE_num(attr->value.set))
+            ext = sk_ASN1_TYPE_value(attr->value.set, 0);
+        break;
+    }
+    if (!ext || (ext->type != V_ASN1_SEQUENCE))
+        return NULL;
+    p = ext->value.sequence->data;
+    return (STACK_OF(X509_EXTENSION) *)
+        ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
+                      ASN1_ITEM_rptr(X509_EXTENSIONS));
+}
+
+/*
+ * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
+ * in case we want to create a non standard one.
+ */
+
+int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+                                int nid)
+{
+    ASN1_TYPE *at = NULL;
+    X509_ATTRIBUTE *attr = NULL;
+    if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new()))
+        goto err;
+
+    at->type = V_ASN1_SEQUENCE;
+    /* Generate encoding of extensions */
+    at->value.sequence->length =
+        ASN1_item_i2d((ASN1_VALUE *)exts,
+                      &at->value.sequence->data,
+                      ASN1_ITEM_rptr(X509_EXTENSIONS));
+    if (!(attr = X509_ATTRIBUTE_new()))
+        goto err;
+    if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
+        goto err;
+    if (!sk_ASN1_TYPE_push(attr->value.set, at))
+        goto err;
+    at = NULL;
+    attr->single = 0;
+    attr->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
+    if (!req->req_info->attributes) {
+        if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
+            goto err;
+    }
+    if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr))
+        goto err;
+    return 1;
+ err:
+    X509_ATTRIBUTE_free(attr);
+    ASN1_TYPE_free(at);
+    return 0;
+}
+
+/* This is the normal usage: use the "official" OID */
+int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
+{
+    return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
+}
+
+/* Request attribute functions */
+
+int X509_REQ_get_attr_count(const X509_REQ *req)
+{
+    return X509at_get_attr_count(req->req_info->attributes);
+}
+
+int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
+{
+    return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
+}
+
+int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+                             int lastpos)
+{
+    return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
+}
+
+X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
+{
+    return X509at_get_attr(req->req_info->attributes, loc);
+}
+
+X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
+{
+    return X509at_delete_attr(req->req_info->attributes, loc);
+}
+
+int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
+{
+    if (X509at_add1_attr(&req->req_info->attributes, attr))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+                              const ASN1_OBJECT *obj, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+                              int nid, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_txt(X509_REQ *req,
+                              const char *attrname, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
+                             const X509_ALGOR **palg)
+{
+    if (psig != NULL)
+        *psig = req->signature;
+    if (palg != NULL)
+        *palg = req->sig_alg;
+}
+
+int X509_REQ_get_signature_nid(const X509_REQ *req)
+{
+    return OBJ_obj2nid(req->sig_alg->algorithm);
+}
+
+int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
+{
+    req->req_info->enc.modified = 1;
+    return i2d_X509_REQ_INFO(req->req_info, pp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c.grpc_back
new file mode 100644
index 0000000..d918b09
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_req.c.grpc_back	
@@ -0,0 +1,341 @@
+/* crypto/x509/x509_req.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pem.h>
+#include <openssl/x509.h>
+
+X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    X509_REQ *ret;
+    X509_REQ_INFO *ri;
+    int i;
+    EVP_PKEY *pktmp;
+
+    ret = X509_REQ_new();
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    ri = ret->req_info;
+
+    ri->version->length = 1;
+    ri->version->data = (unsigned char *)OPENSSL_malloc(1);
+    if (ri->version->data == NULL)
+        goto err;
+    ri->version->data[0] = 0;   /* version == 0 */
+
+    if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
+        goto err;
+
+    pktmp = X509_get_pubkey(x);
+    if (pktmp == NULL)
+        goto err;
+    i = X509_REQ_set_pubkey(ret, pktmp);
+    EVP_PKEY_free(pktmp);
+    if (!i)
+        goto err;
+
+    if (pkey != NULL) {
+        if (!X509_REQ_sign(ret, pkey, md))
+            goto err;
+    }
+    return (ret);
+ err:
+    X509_REQ_free(ret);
+    return (NULL);
+}
+
+EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
+{
+    if ((req == NULL) || (req->req_info == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(req->req_info->pubkey));
+}
+
+int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
+{
+    EVP_PKEY *xk = NULL;
+    int ok = 0;
+
+    xk = X509_REQ_get_pubkey(x);
+    switch (EVP_PKEY_cmp(xk, k)) {
+    case 1:
+        ok = 1;
+        break;
+    case 0:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+        break;
+    case -1:
+        OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+        break;
+    case -2:
+        if (k->type == EVP_PKEY_EC) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_EC_LIB);
+            break;
+        }
+        if (k->type == EVP_PKEY_DH) {
+            /* No idea */
+            OPENSSL_PUT_ERROR(X509, X509_R_CANT_CHECK_DH_KEY);
+            break;
+        }
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    }
+
+    EVP_PKEY_free(xk);
+    return (ok);
+}
+
+/*
+ * It seems several organisations had the same idea of including a list of
+ * extensions in a certificate request. There are at least two OIDs that are
+ * used and there may be more: so the list is configurable.
+ */
+
+static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
+
+static const int *ext_nids = ext_nid_list;
+
+int X509_REQ_extension_nid(int req_nid)
+{
+    int i, nid;
+    for (i = 0;; i++) {
+        nid = ext_nids[i];
+        if (nid == NID_undef)
+            return 0;
+        else if (req_nid == nid)
+            return 1;
+    }
+}
+
+const int *X509_REQ_get_extension_nids(void)
+{
+    return ext_nids;
+}
+
+void X509_REQ_set_extension_nids(const int *nids)
+{
+    ext_nids = nids;
+}
+
+STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
+{
+    X509_ATTRIBUTE *attr;
+    ASN1_TYPE *ext = NULL;
+    int idx;
+    const int *pnid;
+    const unsigned char *p;
+
+    if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
+        return (NULL);
+    for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
+        idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
+        if (idx == -1)
+            continue;
+        attr = X509_REQ_get_attr(req, idx);
+        if (attr->single)
+            ext = attr->value.single;
+        else if (sk_ASN1_TYPE_num(attr->value.set))
+            ext = sk_ASN1_TYPE_value(attr->value.set, 0);
+        break;
+    }
+    if (!ext || (ext->type != V_ASN1_SEQUENCE))
+        return NULL;
+    p = ext->value.sequence->data;
+    return (STACK_OF(X509_EXTENSION) *)
+        ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
+                      ASN1_ITEM_rptr(X509_EXTENSIONS));
+}
+
+/*
+ * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
+ * in case we want to create a non standard one.
+ */
+
+int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+                                int nid)
+{
+    ASN1_TYPE *at = NULL;
+    X509_ATTRIBUTE *attr = NULL;
+    if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new()))
+        goto err;
+
+    at->type = V_ASN1_SEQUENCE;
+    /* Generate encoding of extensions */
+    at->value.sequence->length =
+        ASN1_item_i2d((ASN1_VALUE *)exts,
+                      &at->value.sequence->data,
+                      ASN1_ITEM_rptr(X509_EXTENSIONS));
+    if (!(attr = X509_ATTRIBUTE_new()))
+        goto err;
+    if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
+        goto err;
+    if (!sk_ASN1_TYPE_push(attr->value.set, at))
+        goto err;
+    at = NULL;
+    attr->single = 0;
+    attr->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
+    if (!req->req_info->attributes) {
+        if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
+            goto err;
+    }
+    if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr))
+        goto err;
+    return 1;
+ err:
+    X509_ATTRIBUTE_free(attr);
+    ASN1_TYPE_free(at);
+    return 0;
+}
+
+/* This is the normal usage: use the "official" OID */
+int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
+{
+    return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
+}
+
+/* Request attribute functions */
+
+int X509_REQ_get_attr_count(const X509_REQ *req)
+{
+    return X509at_get_attr_count(req->req_info->attributes);
+}
+
+int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
+{
+    return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
+}
+
+int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+                             int lastpos)
+{
+    return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
+}
+
+X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
+{
+    return X509at_get_attr(req->req_info->attributes, loc);
+}
+
+X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
+{
+    return X509at_delete_attr(req->req_info->attributes, loc);
+}
+
+int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
+{
+    if (X509at_add1_attr(&req->req_info->attributes, attr))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+                              const ASN1_OBJECT *obj, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+                              int nid, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+int X509_REQ_add1_attr_by_txt(X509_REQ *req,
+                              const char *attrname, int type,
+                              const unsigned char *bytes, int len)
+{
+    if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
+                                type, bytes, len))
+        return 1;
+    return 0;
+}
+
+void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
+                             const X509_ALGOR **palg)
+{
+    if (psig != NULL)
+        *psig = req->signature;
+    if (palg != NULL)
+        *palg = req->sig_alg;
+}
+
+int X509_REQ_get_signature_nid(const X509_REQ *req)
+{
+    return OBJ_obj2nid(req->sig_alg->algorithm);
+}
+
+int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
+{
+    req->req_info->enc.modified = 1;
+    return i2d_X509_REQ_INFO(req->req_info, pp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c
new file mode 100644
index 0000000..7c8ba99
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c	
@@ -0,0 +1,169 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+int X509_set_version(X509 *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    if (version == 0) {
+        M_ASN1_INTEGER_free(x->cert_info->version);
+        x->cert_info->version = NULL;
+        return (1);
+    }
+    if (x->cert_info->version == NULL) {
+        if ((x->cert_info->version = M_ASN1_INTEGER_new()) == NULL)
+            return (0);
+    }
+    return (ASN1_INTEGER_set(x->cert_info->version, version));
+}
+
+int X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial)
+{
+    ASN1_INTEGER *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->cert_info->serialNumber;
+    if (in != serial) {
+        in = M_ASN1_INTEGER_dup(serial);
+        if (in != NULL) {
+            M_ASN1_INTEGER_free(x->cert_info->serialNumber);
+            x->cert_info->serialNumber = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_set_issuer_name(X509 *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->cert_info->issuer, name));
+}
+
+int X509_set_subject_name(X509 *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->cert_info->subject, name));
+}
+
+int X509_set_notBefore(X509 *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if ((x == NULL) || (x->cert_info->validity == NULL))
+        return (0);
+    in = x->cert_info->validity->notBefore;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->cert_info->validity->notBefore);
+            x->cert_info->validity->notBefore = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_TIME *X509_get0_notBefore(const X509 *x)
+{
+    return x->cert_info->validity->notBefore;
+}
+
+int X509_set_notAfter(X509 *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if ((x == NULL) || (x->cert_info->validity == NULL))
+        return (0);
+    in = x->cert_info->validity->notAfter;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->cert_info->validity->notAfter);
+            x->cert_info->validity->notAfter = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_TIME *X509_get0_notAfter(const X509 *x)
+{
+    return x->cert_info->validity->notAfter;
+}
+
+int X509_set_pubkey(X509 *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&(x->cert_info->key), pkey));
+}
+
+STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x)
+{
+    return x->cert_info->extensions;
+}
+
+const X509_ALGOR *X509_get0_tbs_sigalg(const X509 *x)
+{
+    return x->cert_info->signature;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c.grpc_back
new file mode 100644
index 0000000..0aa92bd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_set.c.grpc_back	
@@ -0,0 +1,169 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/cipher.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+int X509_set_version(X509 *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    if (version == 0) {
+        M_ASN1_INTEGER_free(x->cert_info->version);
+        x->cert_info->version = NULL;
+        return (1);
+    }
+    if (x->cert_info->version == NULL) {
+        if ((x->cert_info->version = M_ASN1_INTEGER_new()) == NULL)
+            return (0);
+    }
+    return (ASN1_INTEGER_set(x->cert_info->version, version));
+}
+
+int X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial)
+{
+    ASN1_INTEGER *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->cert_info->serialNumber;
+    if (in != serial) {
+        in = M_ASN1_INTEGER_dup(serial);
+        if (in != NULL) {
+            M_ASN1_INTEGER_free(x->cert_info->serialNumber);
+            x->cert_info->serialNumber = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_set_issuer_name(X509 *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->cert_info->issuer, name));
+}
+
+int X509_set_subject_name(X509 *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->cert_info->subject, name));
+}
+
+int X509_set_notBefore(X509 *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if ((x == NULL) || (x->cert_info->validity == NULL))
+        return (0);
+    in = x->cert_info->validity->notBefore;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->cert_info->validity->notBefore);
+            x->cert_info->validity->notBefore = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_TIME *X509_get0_notBefore(const X509 *x)
+{
+    return x->cert_info->validity->notBefore;
+}
+
+int X509_set_notAfter(X509 *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if ((x == NULL) || (x->cert_info->validity == NULL))
+        return (0);
+    in = x->cert_info->validity->notAfter;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->cert_info->validity->notAfter);
+            x->cert_info->validity->notAfter = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_TIME *X509_get0_notAfter(const X509 *x)
+{
+    return x->cert_info->validity->notAfter;
+}
+
+int X509_set_pubkey(X509 *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&(x->cert_info->key), pkey));
+}
+
+STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x)
+{
+    return x->cert_info->extensions;
+}
+
+const X509_ALGOR *X509_get0_tbs_sigalg(const X509 *x)
+{
+    return x->cert_info->signature;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c
new file mode 100644
index 0000000..f95d898
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c	
@@ -0,0 +1,326 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b);
+static void trtable_free(X509_TRUST *p);
+
+static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
+static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
+static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
+
+static int obj_trust(int id, X509 *x, int flags);
+static int (*default_trust) (int id, X509 *x, int flags) = obj_trust;
+
+/*
+ * WARNING: the following table should be kept in order of trust and without
+ * any gaps so we can just subtract the minimum trust value to get an index
+ * into the table
+ */
+
+static X509_TRUST trstandard[] = {
+    {X509_TRUST_COMPAT, 0, trust_compat, (char *)"compatible", 0, NULL},
+    {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, (char *)"SSL Client",
+     NID_client_auth, NULL},
+    {X509_TRUST_SSL_SERVER, 0, trust_1oidany, (char *)"SSL Server",
+     NID_server_auth, NULL},
+    {X509_TRUST_EMAIL, 0, trust_1oidany, (char *)"S/MIME email",
+     NID_email_protect, NULL},
+    {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, (char *)"Object Signer",
+     NID_code_sign, NULL},
+    {X509_TRUST_OCSP_SIGN, 0, trust_1oid, (char *)"OCSP responder",
+     NID_OCSP_sign, NULL},
+    {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, (char *)"OCSP request",
+     NID_ad_OCSP, NULL},
+    {X509_TRUST_TSA, 0, trust_1oidany, (char *)"TSA server", NID_time_stamp,
+     NULL}
+};
+
+#define X509_TRUST_COUNT        (sizeof(trstandard)/sizeof(X509_TRUST))
+
+static STACK_OF(X509_TRUST) *trtable = NULL;
+
+static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b)
+{
+    return (*a)->trust - (*b)->trust;
+}
+
+int (*X509_TRUST_set_default(int (*trust) (int, X509 *, int))) (int, X509 *,
+                                                                int) {
+    int (*oldtrust) (int, X509 *, int);
+    oldtrust = default_trust;
+    default_trust = trust;
+    return oldtrust;
+}
+
+int X509_check_trust(X509 *x, int id, int flags)
+{
+    X509_TRUST *pt;
+    int idx;
+    if (id == -1)
+        return 1;
+    /* We get this as a default value */
+    if (id == 0) {
+        int rv;
+        rv = obj_trust(NID_anyExtendedKeyUsage, x, 0);
+        if (rv != X509_TRUST_UNTRUSTED)
+            return rv;
+        return trust_compat(NULL, x, 0);
+    }
+    idx = X509_TRUST_get_by_id(id);
+    if (idx == -1)
+        return default_trust(id, x, flags);
+    pt = X509_TRUST_get0(idx);
+    return pt->check_trust(pt, x, flags);
+}
+
+int X509_TRUST_get_count(void)
+{
+    if (!trtable)
+        return X509_TRUST_COUNT;
+    return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
+}
+
+X509_TRUST *X509_TRUST_get0(int idx)
+{
+    if (idx < 0)
+        return NULL;
+    if (idx < (int)X509_TRUST_COUNT)
+        return trstandard + idx;
+    return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
+}
+
+int X509_TRUST_get_by_id(int id)
+{
+    X509_TRUST tmp;
+    size_t idx;
+
+    if ((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
+        return id - X509_TRUST_MIN;
+    tmp.trust = id;
+    if (!trtable)
+        return -1;
+    sk_X509_TRUST_sort(trtable);
+    if (!sk_X509_TRUST_find(trtable, &idx, &tmp)) {
+        return -1;
+    }
+    return idx + X509_TRUST_COUNT;
+}
+
+int X509_TRUST_set(int *t, int trust)
+{
+    if (X509_TRUST_get_by_id(trust) == -1) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_TRUST);
+        return 0;
+    }
+    *t = trust;
+    return 1;
+}
+
+int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
+                   char *name, int arg1, void *arg2)
+{
+    int idx;
+    X509_TRUST *trtmp;
+    char *name_dup;
+
+    /*
+     * This is set according to what we change: application can't set it
+     */
+    flags &= ~X509_TRUST_DYNAMIC;
+    /* This will always be set for application modified trust entries */
+    flags |= X509_TRUST_DYNAMIC_NAME;
+    /* Get existing entry if any */
+    idx = X509_TRUST_get_by_id(id);
+    /* Need a new entry */
+    if (idx == -1) {
+        if (!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        trtmp->flags = X509_TRUST_DYNAMIC;
+    } else
+        trtmp = X509_TRUST_get0(idx);
+
+    /* Duplicate the supplied name. */
+    name_dup = OPENSSL_strdup(name);
+    if (name_dup == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        if (idx == -1)
+            OPENSSL_free(trtmp);
+        return 0;
+    }
+
+    /* OPENSSL_free existing name if dynamic */
+    if (trtmp->flags & X509_TRUST_DYNAMIC_NAME)
+        OPENSSL_free(trtmp->name);
+    trtmp->name = name_dup;
+    /* Keep the dynamic flag of existing entry */
+    trtmp->flags &= X509_TRUST_DYNAMIC;
+    /* Set all other flags */
+    trtmp->flags |= flags;
+
+    trtmp->trust = id;
+    trtmp->check_trust = ck;
+    trtmp->arg1 = arg1;
+    trtmp->arg2 = arg2;
+
+    /* If its a new entry manage the dynamic table */
+    if (idx == -1) {
+        if (!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            trtable_free(trtmp);
+            return 0;
+        }
+        if (!sk_X509_TRUST_push(trtable, trtmp)) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            trtable_free(trtmp);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static void trtable_free(X509_TRUST *p)
+{
+    if (!p)
+        return;
+    if (p->flags & X509_TRUST_DYNAMIC) {
+        if (p->flags & X509_TRUST_DYNAMIC_NAME)
+            OPENSSL_free(p->name);
+        OPENSSL_free(p);
+    }
+}
+
+void X509_TRUST_cleanup(void)
+{
+    unsigned int i;
+    for (i = 0; i < X509_TRUST_COUNT; i++)
+        trtable_free(trstandard + i);
+    sk_X509_TRUST_pop_free(trtable, trtable_free);
+    trtable = NULL;
+}
+
+int X509_TRUST_get_flags(X509_TRUST *xp)
+{
+    return xp->flags;
+}
+
+char *X509_TRUST_get0_name(X509_TRUST *xp)
+{
+    return xp->name;
+}
+
+int X509_TRUST_get_trust(X509_TRUST *xp)
+{
+    return xp->trust;
+}
+
+static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
+{
+    if (x->aux && (x->aux->trust || x->aux->reject))
+        return obj_trust(trust->arg1, x, flags);
+    /*
+     * we don't have any trust settings: for compatibility we return trusted
+     * if it is self signed
+     */
+    return trust_compat(trust, x, flags);
+}
+
+static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
+{
+    if (x->aux)
+        return obj_trust(trust->arg1, x, flags);
+    return X509_TRUST_UNTRUSTED;
+}
+
+static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
+{
+    X509_check_purpose(x, -1, 0);
+    if (x->ex_flags & EXFLAG_SS)
+        return X509_TRUST_TRUSTED;
+    else
+        return X509_TRUST_UNTRUSTED;
+}
+
+static int obj_trust(int id, X509 *x, int flags)
+{
+    ASN1_OBJECT *obj;
+    size_t i;
+    X509_CERT_AUX *ax;
+    ax = x->aux;
+    if (!ax)
+        return X509_TRUST_UNTRUSTED;
+    if (ax->reject) {
+        for (i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
+            obj = sk_ASN1_OBJECT_value(ax->reject, i);
+            if (OBJ_obj2nid(obj) == id)
+                return X509_TRUST_REJECTED;
+        }
+    }
+    if (ax->trust) {
+        for (i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
+            obj = sk_ASN1_OBJECT_value(ax->trust, i);
+            if (OBJ_obj2nid(obj) == id)
+                return X509_TRUST_TRUSTED;
+        }
+    }
+    return X509_TRUST_UNTRUSTED;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c.grpc_back
new file mode 100644
index 0000000..18ac883
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_trs.c.grpc_back	
@@ -0,0 +1,326 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b);
+static void trtable_free(X509_TRUST *p);
+
+static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
+static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
+static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
+
+static int obj_trust(int id, X509 *x, int flags);
+static int (*default_trust) (int id, X509 *x, int flags) = obj_trust;
+
+/*
+ * WARNING: the following table should be kept in order of trust and without
+ * any gaps so we can just subtract the minimum trust value to get an index
+ * into the table
+ */
+
+static X509_TRUST trstandard[] = {
+    {X509_TRUST_COMPAT, 0, trust_compat, (char *)"compatible", 0, NULL},
+    {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, (char *)"SSL Client",
+     NID_client_auth, NULL},
+    {X509_TRUST_SSL_SERVER, 0, trust_1oidany, (char *)"SSL Server",
+     NID_server_auth, NULL},
+    {X509_TRUST_EMAIL, 0, trust_1oidany, (char *)"S/MIME email",
+     NID_email_protect, NULL},
+    {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, (char *)"Object Signer",
+     NID_code_sign, NULL},
+    {X509_TRUST_OCSP_SIGN, 0, trust_1oid, (char *)"OCSP responder",
+     NID_OCSP_sign, NULL},
+    {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, (char *)"OCSP request",
+     NID_ad_OCSP, NULL},
+    {X509_TRUST_TSA, 0, trust_1oidany, (char *)"TSA server", NID_time_stamp,
+     NULL}
+};
+
+#define X509_TRUST_COUNT        (sizeof(trstandard)/sizeof(X509_TRUST))
+
+static STACK_OF(X509_TRUST) *trtable = NULL;
+
+static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b)
+{
+    return (*a)->trust - (*b)->trust;
+}
+
+int (*X509_TRUST_set_default(int (*trust) (int, X509 *, int))) (int, X509 *,
+                                                                int) {
+    int (*oldtrust) (int, X509 *, int);
+    oldtrust = default_trust;
+    default_trust = trust;
+    return oldtrust;
+}
+
+int X509_check_trust(X509 *x, int id, int flags)
+{
+    X509_TRUST *pt;
+    int idx;
+    if (id == -1)
+        return 1;
+    /* We get this as a default value */
+    if (id == 0) {
+        int rv;
+        rv = obj_trust(NID_anyExtendedKeyUsage, x, 0);
+        if (rv != X509_TRUST_UNTRUSTED)
+            return rv;
+        return trust_compat(NULL, x, 0);
+    }
+    idx = X509_TRUST_get_by_id(id);
+    if (idx == -1)
+        return default_trust(id, x, flags);
+    pt = X509_TRUST_get0(idx);
+    return pt->check_trust(pt, x, flags);
+}
+
+int X509_TRUST_get_count(void)
+{
+    if (!trtable)
+        return X509_TRUST_COUNT;
+    return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
+}
+
+X509_TRUST *X509_TRUST_get0(int idx)
+{
+    if (idx < 0)
+        return NULL;
+    if (idx < (int)X509_TRUST_COUNT)
+        return trstandard + idx;
+    return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
+}
+
+int X509_TRUST_get_by_id(int id)
+{
+    X509_TRUST tmp;
+    size_t idx;
+
+    if ((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
+        return id - X509_TRUST_MIN;
+    tmp.trust = id;
+    if (!trtable)
+        return -1;
+    sk_X509_TRUST_sort(trtable);
+    if (!sk_X509_TRUST_find(trtable, &idx, &tmp)) {
+        return -1;
+    }
+    return idx + X509_TRUST_COUNT;
+}
+
+int X509_TRUST_set(int *t, int trust)
+{
+    if (X509_TRUST_get_by_id(trust) == -1) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_TRUST);
+        return 0;
+    }
+    *t = trust;
+    return 1;
+}
+
+int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
+                   char *name, int arg1, void *arg2)
+{
+    int idx;
+    X509_TRUST *trtmp;
+    char *name_dup;
+
+    /*
+     * This is set according to what we change: application can't set it
+     */
+    flags &= ~X509_TRUST_DYNAMIC;
+    /* This will always be set for application modified trust entries */
+    flags |= X509_TRUST_DYNAMIC_NAME;
+    /* Get existing entry if any */
+    idx = X509_TRUST_get_by_id(id);
+    /* Need a new entry */
+    if (idx == -1) {
+        if (!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        trtmp->flags = X509_TRUST_DYNAMIC;
+    } else
+        trtmp = X509_TRUST_get0(idx);
+
+    /* Duplicate the supplied name. */
+    name_dup = OPENSSL_strdup(name);
+    if (name_dup == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        if (idx == -1)
+            OPENSSL_free(trtmp);
+        return 0;
+    }
+
+    /* OPENSSL_free existing name if dynamic */
+    if (trtmp->flags & X509_TRUST_DYNAMIC_NAME)
+        OPENSSL_free(trtmp->name);
+    trtmp->name = name_dup;
+    /* Keep the dynamic flag of existing entry */
+    trtmp->flags &= X509_TRUST_DYNAMIC;
+    /* Set all other flags */
+    trtmp->flags |= flags;
+
+    trtmp->trust = id;
+    trtmp->check_trust = ck;
+    trtmp->arg1 = arg1;
+    trtmp->arg2 = arg2;
+
+    /* If its a new entry manage the dynamic table */
+    if (idx == -1) {
+        if (!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            trtable_free(trtmp);
+            return 0;
+        }
+        if (!sk_X509_TRUST_push(trtable, trtmp)) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            trtable_free(trtmp);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static void trtable_free(X509_TRUST *p)
+{
+    if (!p)
+        return;
+    if (p->flags & X509_TRUST_DYNAMIC) {
+        if (p->flags & X509_TRUST_DYNAMIC_NAME)
+            OPENSSL_free(p->name);
+        OPENSSL_free(p);
+    }
+}
+
+void X509_TRUST_cleanup(void)
+{
+    unsigned int i;
+    for (i = 0; i < X509_TRUST_COUNT; i++)
+        trtable_free(trstandard + i);
+    sk_X509_TRUST_pop_free(trtable, trtable_free);
+    trtable = NULL;
+}
+
+int X509_TRUST_get_flags(X509_TRUST *xp)
+{
+    return xp->flags;
+}
+
+char *X509_TRUST_get0_name(X509_TRUST *xp)
+{
+    return xp->name;
+}
+
+int X509_TRUST_get_trust(X509_TRUST *xp)
+{
+    return xp->trust;
+}
+
+static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
+{
+    if (x->aux && (x->aux->trust || x->aux->reject))
+        return obj_trust(trust->arg1, x, flags);
+    /*
+     * we don't have any trust settings: for compatibility we return trusted
+     * if it is self signed
+     */
+    return trust_compat(trust, x, flags);
+}
+
+static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
+{
+    if (x->aux)
+        return obj_trust(trust->arg1, x, flags);
+    return X509_TRUST_UNTRUSTED;
+}
+
+static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
+{
+    X509_check_purpose(x, -1, 0);
+    if (x->ex_flags & EXFLAG_SS)
+        return X509_TRUST_TRUSTED;
+    else
+        return X509_TRUST_UNTRUSTED;
+}
+
+static int obj_trust(int id, X509 *x, int flags)
+{
+    ASN1_OBJECT *obj;
+    size_t i;
+    X509_CERT_AUX *ax;
+    ax = x->aux;
+    if (!ax)
+        return X509_TRUST_UNTRUSTED;
+    if (ax->reject) {
+        for (i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
+            obj = sk_ASN1_OBJECT_value(ax->reject, i);
+            if (OBJ_obj2nid(obj) == id)
+                return X509_TRUST_REJECTED;
+        }
+    }
+    if (ax->trust) {
+        for (i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
+            obj = sk_ASN1_OBJECT_value(ax->trust, i);
+            if (OBJ_obj2nid(obj) == id)
+                return X509_TRUST_TRUSTED;
+        }
+    }
+    return X509_TRUST_UNTRUSTED;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c
new file mode 100644
index 0000000..9a2eca8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c	
@@ -0,0 +1,204 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+const char *X509_verify_cert_error_string(long n)
+{
+    switch ((int)n) {
+    case X509_V_OK:
+        return ("ok");
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+        return ("unable to get issuer certificate");
+    case X509_V_ERR_UNABLE_TO_GET_CRL:
+        return ("unable to get certificate CRL");
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+        return ("unable to decrypt certificate's signature");
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+        return ("unable to decrypt CRL's signature");
+    case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+        return ("unable to decode issuer public key");
+    case X509_V_ERR_CERT_SIGNATURE_FAILURE:
+        return ("certificate signature failure");
+    case X509_V_ERR_CRL_SIGNATURE_FAILURE:
+        return ("CRL signature failure");
+    case X509_V_ERR_CERT_NOT_YET_VALID:
+        return ("certificate is not yet valid");
+    case X509_V_ERR_CRL_NOT_YET_VALID:
+        return ("CRL is not yet valid");
+    case X509_V_ERR_CERT_HAS_EXPIRED:
+        return ("certificate has expired");
+    case X509_V_ERR_CRL_HAS_EXPIRED:
+        return ("CRL has expired");
+    case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+        return ("format error in certificate's notBefore field");
+    case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+        return ("format error in certificate's notAfter field");
+    case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+        return ("format error in CRL's lastUpdate field");
+    case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+        return ("format error in CRL's nextUpdate field");
+    case X509_V_ERR_OUT_OF_MEM:
+        return ("out of memory");
+    case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+        return ("self signed certificate");
+    case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+        return ("self signed certificate in certificate chain");
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+        return ("unable to get local issuer certificate");
+    case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+        return ("unable to verify the first certificate");
+    case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+        return ("certificate chain too long");
+    case X509_V_ERR_CERT_REVOKED:
+        return ("certificate revoked");
+    case X509_V_ERR_INVALID_CA:
+        return ("invalid CA certificate");
+    case X509_V_ERR_INVALID_NON_CA:
+        return ("invalid non-CA certificate (has CA markings)");
+    case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+        return ("path length constraint exceeded");
+    case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:
+        return ("proxy path length constraint exceeded");
+    case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:
+        return
+            ("proxy certificates not allowed, please set the appropriate flag");
+    case X509_V_ERR_INVALID_PURPOSE:
+        return ("unsupported certificate purpose");
+    case X509_V_ERR_CERT_UNTRUSTED:
+        return ("certificate not trusted");
+    case X509_V_ERR_CERT_REJECTED:
+        return ("certificate rejected");
+    case X509_V_ERR_APPLICATION_VERIFICATION:
+        return ("application verification failure");
+    case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:
+        return ("subject issuer mismatch");
+    case X509_V_ERR_AKID_SKID_MISMATCH:
+        return ("authority and subject key identifier mismatch");
+    case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:
+        return ("authority and issuer serial number mismatch");
+    case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
+        return ("key usage does not include certificate signing");
+    case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+        return ("unable to get CRL issuer certificate");
+    case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
+        return ("unhandled critical extension");
+    case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:
+        return ("key usage does not include CRL signing");
+    case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:
+        return ("key usage does not include digital signature");
+    case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:
+        return ("unhandled critical CRL extension");
+    case X509_V_ERR_INVALID_EXTENSION:
+        return ("invalid or inconsistent certificate extension");
+    case X509_V_ERR_INVALID_POLICY_EXTENSION:
+        return ("invalid or inconsistent certificate policy extension");
+    case X509_V_ERR_NO_EXPLICIT_POLICY:
+        return ("no explicit policy");
+    case X509_V_ERR_DIFFERENT_CRL_SCOPE:
+        return ("Different CRL scope");
+    case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:
+        return ("Unsupported extension feature");
+    case X509_V_ERR_UNNESTED_RESOURCE:
+        return ("RFC 3779 resource not subset of parent's resources");
+
+    case X509_V_ERR_PERMITTED_VIOLATION:
+        return ("permitted subtree violation");
+    case X509_V_ERR_EXCLUDED_VIOLATION:
+        return ("excluded subtree violation");
+    case X509_V_ERR_SUBTREE_MINMAX:
+        return ("name constraints minimum and maximum not supported");
+    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE:
+        return ("unsupported name constraint type");
+    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX:
+        return ("unsupported or invalid name constraint syntax");
+    case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX:
+        return ("unsupported or invalid name syntax");
+    case X509_V_ERR_CRL_PATH_VALIDATION_ERROR:
+        return ("CRL path validation error");
+
+    case X509_V_ERR_SUITE_B_INVALID_VERSION:
+        return ("Suite B: certificate version invalid");
+    case X509_V_ERR_SUITE_B_INVALID_ALGORITHM:
+        return ("Suite B: invalid public key algorithm");
+    case X509_V_ERR_SUITE_B_INVALID_CURVE:
+        return ("Suite B: invalid ECC curve");
+    case X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM:
+        return ("Suite B: invalid signature algorithm");
+    case X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED:
+        return ("Suite B: curve not allowed for this LOS");
+    case X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256:
+        return ("Suite B: cannot sign P-384 with P-256");
+
+    case X509_V_ERR_HOSTNAME_MISMATCH:
+        return ("Hostname mismatch");
+    case X509_V_ERR_EMAIL_MISMATCH:
+        return ("Email address mismatch");
+    case X509_V_ERR_IP_ADDRESS_MISMATCH:
+        return ("IP address mismatch");
+
+    case X509_V_ERR_INVALID_CALL:
+        return ("Invalid certificate verification context");
+    case X509_V_ERR_STORE_LOOKUP:
+        return ("Issuer certificate lookup error");
+
+    case X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS:
+        return "Issuer has name constraints but leaf has no SANs";
+
+    default:
+        return "unknown certificate verification error";
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c.grpc_back
new file mode 100644
index 0000000..8e6ac27
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_txt.c.grpc_back	
@@ -0,0 +1,204 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+const char *X509_verify_cert_error_string(long n)
+{
+    switch ((int)n) {
+    case X509_V_OK:
+        return ("ok");
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+        return ("unable to get issuer certificate");
+    case X509_V_ERR_UNABLE_TO_GET_CRL:
+        return ("unable to get certificate CRL");
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+        return ("unable to decrypt certificate's signature");
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+        return ("unable to decrypt CRL's signature");
+    case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+        return ("unable to decode issuer public key");
+    case X509_V_ERR_CERT_SIGNATURE_FAILURE:
+        return ("certificate signature failure");
+    case X509_V_ERR_CRL_SIGNATURE_FAILURE:
+        return ("CRL signature failure");
+    case X509_V_ERR_CERT_NOT_YET_VALID:
+        return ("certificate is not yet valid");
+    case X509_V_ERR_CRL_NOT_YET_VALID:
+        return ("CRL is not yet valid");
+    case X509_V_ERR_CERT_HAS_EXPIRED:
+        return ("certificate has expired");
+    case X509_V_ERR_CRL_HAS_EXPIRED:
+        return ("CRL has expired");
+    case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+        return ("format error in certificate's notBefore field");
+    case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+        return ("format error in certificate's notAfter field");
+    case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+        return ("format error in CRL's lastUpdate field");
+    case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+        return ("format error in CRL's nextUpdate field");
+    case X509_V_ERR_OUT_OF_MEM:
+        return ("out of memory");
+    case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+        return ("self signed certificate");
+    case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+        return ("self signed certificate in certificate chain");
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+        return ("unable to get local issuer certificate");
+    case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+        return ("unable to verify the first certificate");
+    case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+        return ("certificate chain too long");
+    case X509_V_ERR_CERT_REVOKED:
+        return ("certificate revoked");
+    case X509_V_ERR_INVALID_CA:
+        return ("invalid CA certificate");
+    case X509_V_ERR_INVALID_NON_CA:
+        return ("invalid non-CA certificate (has CA markings)");
+    case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+        return ("path length constraint exceeded");
+    case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:
+        return ("proxy path length constraint exceeded");
+    case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:
+        return
+            ("proxy certificates not allowed, please set the appropriate flag");
+    case X509_V_ERR_INVALID_PURPOSE:
+        return ("unsupported certificate purpose");
+    case X509_V_ERR_CERT_UNTRUSTED:
+        return ("certificate not trusted");
+    case X509_V_ERR_CERT_REJECTED:
+        return ("certificate rejected");
+    case X509_V_ERR_APPLICATION_VERIFICATION:
+        return ("application verification failure");
+    case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:
+        return ("subject issuer mismatch");
+    case X509_V_ERR_AKID_SKID_MISMATCH:
+        return ("authority and subject key identifier mismatch");
+    case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:
+        return ("authority and issuer serial number mismatch");
+    case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
+        return ("key usage does not include certificate signing");
+    case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+        return ("unable to get CRL issuer certificate");
+    case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
+        return ("unhandled critical extension");
+    case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:
+        return ("key usage does not include CRL signing");
+    case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:
+        return ("key usage does not include digital signature");
+    case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:
+        return ("unhandled critical CRL extension");
+    case X509_V_ERR_INVALID_EXTENSION:
+        return ("invalid or inconsistent certificate extension");
+    case X509_V_ERR_INVALID_POLICY_EXTENSION:
+        return ("invalid or inconsistent certificate policy extension");
+    case X509_V_ERR_NO_EXPLICIT_POLICY:
+        return ("no explicit policy");
+    case X509_V_ERR_DIFFERENT_CRL_SCOPE:
+        return ("Different CRL scope");
+    case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:
+        return ("Unsupported extension feature");
+    case X509_V_ERR_UNNESTED_RESOURCE:
+        return ("RFC 3779 resource not subset of parent's resources");
+
+    case X509_V_ERR_PERMITTED_VIOLATION:
+        return ("permitted subtree violation");
+    case X509_V_ERR_EXCLUDED_VIOLATION:
+        return ("excluded subtree violation");
+    case X509_V_ERR_SUBTREE_MINMAX:
+        return ("name constraints minimum and maximum not supported");
+    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE:
+        return ("unsupported name constraint type");
+    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX:
+        return ("unsupported or invalid name constraint syntax");
+    case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX:
+        return ("unsupported or invalid name syntax");
+    case X509_V_ERR_CRL_PATH_VALIDATION_ERROR:
+        return ("CRL path validation error");
+
+    case X509_V_ERR_SUITE_B_INVALID_VERSION:
+        return ("Suite B: certificate version invalid");
+    case X509_V_ERR_SUITE_B_INVALID_ALGORITHM:
+        return ("Suite B: invalid public key algorithm");
+    case X509_V_ERR_SUITE_B_INVALID_CURVE:
+        return ("Suite B: invalid ECC curve");
+    case X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM:
+        return ("Suite B: invalid signature algorithm");
+    case X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED:
+        return ("Suite B: curve not allowed for this LOS");
+    case X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256:
+        return ("Suite B: cannot sign P-384 with P-256");
+
+    case X509_V_ERR_HOSTNAME_MISMATCH:
+        return ("Hostname mismatch");
+    case X509_V_ERR_EMAIL_MISMATCH:
+        return ("Email address mismatch");
+    case X509_V_ERR_IP_ADDRESS_MISMATCH:
+        return ("IP address mismatch");
+
+    case X509_V_ERR_INVALID_CALL:
+        return ("Invalid certificate verification context");
+    case X509_V_ERR_STORE_LOOKUP:
+        return ("Issuer certificate lookup error");
+
+    case X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS:
+        return "Issuer has name constraints but leaf has no SANs";
+
+    default:
+        return "unknown certificate verification error";
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c
new file mode 100644
index 0000000..0cb893f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c	
@@ -0,0 +1,278 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
+{
+    if (x == NULL)
+        return (0);
+    return (sk_X509_EXTENSION_num(x));
+}
+
+int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
+                          int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509v3_get_ext_by_OBJ(x, obj, lastpos));
+}
+
+int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
+                          const ASN1_OBJECT *obj, int lastpos)
+{
+    int n;
+    X509_EXTENSION *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_EXTENSION_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_EXTENSION_value(sk, lastpos);
+        if (OBJ_cmp(ex->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
+                               int lastpos)
+{
+    int n;
+    X509_EXTENSION *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_EXTENSION_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_EXTENSION_value(sk, lastpos);
+        if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit))
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
+{
+    if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
+        return NULL;
+    else
+        return sk_X509_EXTENSION_value(x, loc);
+}
+
+X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
+{
+    X509_EXTENSION *ret;
+
+    if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
+        return (NULL);
+    ret = sk_X509_EXTENSION_delete(x, loc);
+    return (ret);
+}
+
+STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
+                                         X509_EXTENSION *ex, int loc)
+{
+    X509_EXTENSION *new_ex = NULL;
+    int n;
+    STACK_OF(X509_EXTENSION) *sk = NULL;
+
+    if (x == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        goto err2;
+    }
+
+    if (*x == NULL) {
+        if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
+            goto err;
+    } else
+        sk = *x;
+
+    n = sk_X509_EXTENSION_num(sk);
+    if (loc > n)
+        loc = n;
+    else if (loc < 0)
+        loc = n;
+
+    if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
+        goto err2;
+    if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
+        goto err;
+    if (*x == NULL)
+        *x = sk;
+    return (sk);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ err2:
+    if (new_ex != NULL)
+        X509_EXTENSION_free(new_ex);
+    if (sk != NULL)
+        sk_X509_EXTENSION_free(sk);
+    return (NULL);
+}
+
+X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
+                                             int crit,
+                                             ASN1_OCTET_STRING *data)
+{
+    const ASN1_OBJECT *obj;
+    X509_EXTENSION *ret;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return (NULL);
+    }
+    ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
+    return (ret);
+}
+
+X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
+                                             const ASN1_OBJECT *obj, int crit,
+                                             ASN1_OCTET_STRING *data)
+{
+    X509_EXTENSION *ret;
+
+    if ((ex == NULL) || (*ex == NULL)) {
+        if ((ret = X509_EXTENSION_new()) == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return (NULL);
+        }
+    } else
+        ret = *ex;
+
+    if (!X509_EXTENSION_set_object(ret, obj))
+        goto err;
+    if (!X509_EXTENSION_set_critical(ret, crit))
+        goto err;
+    if (!X509_EXTENSION_set_data(ret, data))
+        goto err;
+
+    if ((ex != NULL) && (*ex == NULL))
+        *ex = ret;
+    return (ret);
+ err:
+    if ((ex == NULL) || (ret != *ex))
+        X509_EXTENSION_free(ret);
+    return (NULL);
+}
+
+int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
+{
+    if ((ex == NULL) || (obj == NULL))
+        return (0);
+    ASN1_OBJECT_free(ex->object);
+    ex->object = OBJ_dup(obj);
+    return ex->object != NULL;
+}
+
+int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
+{
+    if (ex == NULL)
+        return (0);
+    ex->critical = (crit) ? 0xFF : -1;
+    return (1);
+}
+
+int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
+{
+    int i;
+
+    if (ex == NULL)
+        return (0);
+    i = M_ASN1_OCTET_STRING_set(ex->value, data->data, data->length);
+    if (!i)
+        return (0);
+    return (1);
+}
+
+ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (NULL);
+    return (ex->object);
+}
+
+ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (NULL);
+    return (ex->value);
+}
+
+int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (0);
+    if (ex->critical > 0)
+        return 1;
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c.grpc_back
new file mode 100644
index 0000000..ecbc0dd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_v3.c.grpc_back	
@@ -0,0 +1,278 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
+{
+    if (x == NULL)
+        return (0);
+    return (sk_X509_EXTENSION_num(x));
+}
+
+int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
+                          int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509v3_get_ext_by_OBJ(x, obj, lastpos));
+}
+
+int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
+                          const ASN1_OBJECT *obj, int lastpos)
+{
+    int n;
+    X509_EXTENSION *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_EXTENSION_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_EXTENSION_value(sk, lastpos);
+        if (OBJ_cmp(ex->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
+                               int lastpos)
+{
+    int n;
+    X509_EXTENSION *ex;
+
+    if (sk == NULL)
+        return (-1);
+    lastpos++;
+    if (lastpos < 0)
+        lastpos = 0;
+    n = sk_X509_EXTENSION_num(sk);
+    for (; lastpos < n; lastpos++) {
+        ex = sk_X509_EXTENSION_value(sk, lastpos);
+        if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit))
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
+{
+    if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
+        return NULL;
+    else
+        return sk_X509_EXTENSION_value(x, loc);
+}
+
+X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
+{
+    X509_EXTENSION *ret;
+
+    if (x == NULL || loc < 0 || sk_X509_EXTENSION_num(x) <= (size_t)loc)
+        return (NULL);
+    ret = sk_X509_EXTENSION_delete(x, loc);
+    return (ret);
+}
+
+STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
+                                         X509_EXTENSION *ex, int loc)
+{
+    X509_EXTENSION *new_ex = NULL;
+    int n;
+    STACK_OF(X509_EXTENSION) *sk = NULL;
+
+    if (x == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        goto err2;
+    }
+
+    if (*x == NULL) {
+        if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
+            goto err;
+    } else
+        sk = *x;
+
+    n = sk_X509_EXTENSION_num(sk);
+    if (loc > n)
+        loc = n;
+    else if (loc < 0)
+        loc = n;
+
+    if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
+        goto err2;
+    if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
+        goto err;
+    if (*x == NULL)
+        *x = sk;
+    return (sk);
+ err:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ err2:
+    if (new_ex != NULL)
+        X509_EXTENSION_free(new_ex);
+    if (sk != NULL)
+        sk_X509_EXTENSION_free(sk);
+    return (NULL);
+}
+
+X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
+                                             int crit,
+                                             ASN1_OCTET_STRING *data)
+{
+    const ASN1_OBJECT *obj;
+    X509_EXTENSION *ret;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return (NULL);
+    }
+    ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
+    return (ret);
+}
+
+X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
+                                             const ASN1_OBJECT *obj, int crit,
+                                             ASN1_OCTET_STRING *data)
+{
+    X509_EXTENSION *ret;
+
+    if ((ex == NULL) || (*ex == NULL)) {
+        if ((ret = X509_EXTENSION_new()) == NULL) {
+            OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+            return (NULL);
+        }
+    } else
+        ret = *ex;
+
+    if (!X509_EXTENSION_set_object(ret, obj))
+        goto err;
+    if (!X509_EXTENSION_set_critical(ret, crit))
+        goto err;
+    if (!X509_EXTENSION_set_data(ret, data))
+        goto err;
+
+    if ((ex != NULL) && (*ex == NULL))
+        *ex = ret;
+    return (ret);
+ err:
+    if ((ex == NULL) || (ret != *ex))
+        X509_EXTENSION_free(ret);
+    return (NULL);
+}
+
+int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
+{
+    if ((ex == NULL) || (obj == NULL))
+        return (0);
+    ASN1_OBJECT_free(ex->object);
+    ex->object = OBJ_dup(obj);
+    return ex->object != NULL;
+}
+
+int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
+{
+    if (ex == NULL)
+        return (0);
+    ex->critical = (crit) ? 0xFF : -1;
+    return (1);
+}
+
+int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
+{
+    int i;
+
+    if (ex == NULL)
+        return (0);
+    i = M_ASN1_OCTET_STRING_set(ex->value, data->data, data->length);
+    if (!i)
+        return (0);
+    return (1);
+}
+
+ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (NULL);
+    return (ex->object);
+}
+
+ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (NULL);
+    return (ex->value);
+}
+
+int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
+{
+    if (ex == NULL)
+        return (0);
+    if (ex->critical > 0)
+        return 1;
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c
new file mode 100644
index 0000000..3267f12
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c	
@@ -0,0 +1,2482 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "vpm_int.h"
+#include "../internal.h"
+#include "../x509v3/internal.h"
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+/* CRL score values */
+
+/* No unhandled critical extensions */
+
+#define CRL_SCORE_NOCRITICAL    0x100
+
+/* certificate is within CRL scope */
+
+#define CRL_SCORE_SCOPE         0x080
+
+/* CRL times valid */
+
+#define CRL_SCORE_TIME          0x040
+
+/* Issuer name matches certificate */
+
+#define CRL_SCORE_ISSUER_NAME   0x020
+
+/* If this score or above CRL is probably valid */
+
+#define CRL_SCORE_VALID (CRL_SCORE_NOCRITICAL|CRL_SCORE_TIME|CRL_SCORE_SCOPE)
+
+/* CRL issuer is certificate issuer */
+
+#define CRL_SCORE_ISSUER_CERT   0x018
+
+/* CRL issuer is on certificate path */
+
+#define CRL_SCORE_SAME_PATH     0x008
+
+/* CRL issuer matches CRL AKID */
+
+#define CRL_SCORE_AKID          0x004
+
+/* Have a delta CRL with valid times */
+
+#define CRL_SCORE_TIME_DELTA    0x002
+
+static int null_callback(int ok, X509_STORE_CTX *e);
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
+static int check_chain_extensions(X509_STORE_CTX *ctx);
+static int check_name_constraints(X509_STORE_CTX *ctx);
+static int check_id(X509_STORE_CTX *ctx);
+static int check_trust(X509_STORE_CTX *ctx);
+static int check_revocation(X509_STORE_CTX *ctx);
+static int check_cert(X509_STORE_CTX *ctx);
+static int check_policy(X509_STORE_CTX *ctx);
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+                         unsigned int *preasons, X509_CRL *crl, X509 *x);
+static int get_crl_delta(X509_STORE_CTX *ctx,
+                         X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x);
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl,
+                         int *pcrl_score, X509_CRL *base,
+                         STACK_OF(X509_CRL) *crls);
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer,
+                           int *pcrl_score);
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+                           unsigned int *preasons);
+static int check_crl_path(X509_STORE_CTX *ctx, X509 *x);
+static int check_crl_chain(X509_STORE_CTX *ctx,
+                           STACK_OF(X509) *cert_path,
+                           STACK_OF(X509) *crl_path);
+
+static int internal_verify(X509_STORE_CTX *ctx);
+
+static int null_callback(int ok, X509_STORE_CTX *e)
+{
+    return ok;
+}
+
+/* Return 1 is a certificate is self signed */
+static int cert_self_signed(X509 *x)
+{
+    X509_check_purpose(x, -1, 0);
+    if (x->ex_flags & EXFLAG_SS)
+        return 1;
+    else
+        return 0;
+}
+
+/* Given a certificate try and find an exact match in the store */
+
+static X509 *lookup_cert_match(X509_STORE_CTX *ctx, X509 *x)
+{
+    STACK_OF(X509) *certs;
+    X509 *xtmp = NULL;
+    size_t i;
+    /* Lookup all certs with matching subject name */
+    certs = ctx->lookup_certs(ctx, X509_get_subject_name(x));
+    if (certs == NULL)
+        return NULL;
+    /* Look for exact match */
+    for (i = 0; i < sk_X509_num(certs); i++) {
+        xtmp = sk_X509_value(certs, i);
+        if (!X509_cmp(xtmp, x))
+            break;
+    }
+    if (i < sk_X509_num(certs))
+        X509_up_ref(xtmp);
+    else
+        xtmp = NULL;
+    sk_X509_pop_free(certs, X509_free);
+    return xtmp;
+}
+
+int X509_verify_cert(X509_STORE_CTX *ctx)
+{
+    X509 *x, *xtmp, *xtmp2, *chain_ss = NULL;
+    int bad_chain = 0;
+    X509_VERIFY_PARAM *param = ctx->param;
+    int depth, i, ok = 0;
+    int num, j, retry, trust;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    STACK_OF(X509) *sktmp = NULL;
+    if (ctx->cert == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
+        ctx->error = X509_V_ERR_INVALID_CALL;
+        return -1;
+    }
+    if (ctx->chain != NULL) {
+        /*
+         * This X509_STORE_CTX has already been used to verify a cert. We
+         * cannot do another one.
+         */
+        OPENSSL_PUT_ERROR(X509, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+        ctx->error = X509_V_ERR_INVALID_CALL;
+        return -1;
+    }
+
+    cb = ctx->verify_cb;
+
+    /*
+     * first we make sure the chain we are going to build is present and that
+     * the first entry is in place
+     */
+    ctx->chain = sk_X509_new_null();
+    if (ctx->chain == NULL || !sk_X509_push(ctx->chain, ctx->cert)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        goto end;
+    }
+    X509_up_ref(ctx->cert);
+    ctx->last_untrusted = 1;
+
+    /* We use a temporary STACK so we can chop and hack at it.
+     * sktmp = ctx->untrusted ++ ctx->ctx->additional_untrusted */
+    if (ctx->untrusted != NULL
+        && (sktmp = sk_X509_dup(ctx->untrusted)) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        goto end;
+    }
+
+    if (ctx->ctx->additional_untrusted != NULL) {
+        if (sktmp == NULL) {
+            sktmp = sk_X509_new_null();
+            if (sktmp == NULL) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                goto end;
+            }
+        }
+
+        for (size_t k = 0; k < sk_X509_num(ctx->ctx->additional_untrusted);
+             k++) {
+            if (!sk_X509_push(sktmp,
+                              sk_X509_value(ctx->ctx->additional_untrusted,
+                              k))) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                goto end;
+            }
+        }
+    }
+
+    num = sk_X509_num(ctx->chain);
+    x = sk_X509_value(ctx->chain, num - 1);
+    depth = param->depth;
+
+    for (;;) {
+        /* If we have enough, we break */
+        if (depth < num)
+            break;              /* FIXME: If this happens, we should take
+                                 * note of it and, if appropriate, use the
+                                 * X509_V_ERR_CERT_CHAIN_TOO_LONG error code
+                                 * later. */
+
+        /* If we are self signed, we break */
+        if (cert_self_signed(x))
+            break;
+        /*
+         * If asked see if we can find issuer in trusted store first
+         */
+        if (ctx->param->flags & X509_V_FLAG_TRUSTED_FIRST) {
+            ok = ctx->get_issuer(&xtmp, ctx, x);
+            if (ok < 0) {
+                ctx->error = X509_V_ERR_STORE_LOOKUP;
+                goto end;
+            }
+            /*
+             * If successful for now free up cert so it will be picked up
+             * again later.
+             */
+            if (ok > 0) {
+                X509_free(xtmp);
+                break;
+            }
+        }
+
+        /* If we were passed a cert chain, use it first */
+        if (sktmp != NULL) {
+            xtmp = find_issuer(ctx, sktmp, x);
+            if (xtmp != NULL) {
+                if (!sk_X509_push(ctx->chain, xtmp)) {
+                    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                    ctx->error = X509_V_ERR_OUT_OF_MEM;
+                    ok = 0;
+                    goto end;
+                }
+                X509_up_ref(xtmp);
+                (void)sk_X509_delete_ptr(sktmp, xtmp);
+                ctx->last_untrusted++;
+                x = xtmp;
+                num++;
+                /*
+                 * reparse the full chain for the next one
+                 */
+                continue;
+            }
+        }
+        break;
+    }
+
+    /* Remember how many untrusted certs we have */
+    j = num;
+    /*
+     * at this point, chain should contain a list of untrusted certificates.
+     * We now need to add at least one trusted one, if possible, otherwise we
+     * complain.
+     */
+
+    do {
+        /*
+         * Examine last certificate in chain and see if it is self signed.
+         */
+        i = sk_X509_num(ctx->chain);
+        x = sk_X509_value(ctx->chain, i - 1);
+        if (cert_self_signed(x)) {
+            /* we have a self signed certificate */
+            if (sk_X509_num(ctx->chain) == 1) {
+                /*
+                 * We have a single self signed certificate: see if we can
+                 * find it in the store. We must have an exact match to avoid
+                 * possible impersonation.
+                 */
+                ok = ctx->get_issuer(&xtmp, ctx, x);
+                if ((ok <= 0) || X509_cmp(x, xtmp)) {
+                    ctx->error = X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
+                    ctx->current_cert = x;
+                    ctx->error_depth = i - 1;
+                    if (ok == 1)
+                        X509_free(xtmp);
+                    bad_chain = 1;
+                    ok = cb(0, ctx);
+                    if (!ok)
+                        goto end;
+                } else {
+                    /*
+                     * We have a match: replace certificate with store
+                     * version so we get any trust settings.
+                     */
+                    X509_free(x);
+                    x = xtmp;
+                    (void)sk_X509_set(ctx->chain, i - 1, x);
+                    ctx->last_untrusted = 0;
+                }
+            } else {
+                /*
+                 * extract and save self signed certificate for later use
+                 */
+                chain_ss = sk_X509_pop(ctx->chain);
+                ctx->last_untrusted--;
+                num--;
+                j--;
+                x = sk_X509_value(ctx->chain, num - 1);
+            }
+        }
+        /* We now lookup certs from the certificate store */
+        for (;;) {
+            /* If we have enough, we break */
+            if (depth < num)
+                break;
+            /* If we are self signed, we break */
+            if (cert_self_signed(x))
+                break;
+            ok = ctx->get_issuer(&xtmp, ctx, x);
+
+            if (ok < 0) {
+                ctx->error = X509_V_ERR_STORE_LOOKUP;
+                goto end;
+            }
+            if (ok == 0)
+                break;
+            x = xtmp;
+            if (!sk_X509_push(ctx->chain, x)) {
+                X509_free(xtmp);
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                ok = 0;
+                goto end;
+            }
+            num++;
+        }
+
+        /* we now have our chain, lets check it... */
+        trust = check_trust(ctx);
+
+        /* If explicitly rejected error */
+        if (trust == X509_TRUST_REJECTED) {
+            ok = 0;
+            goto end;
+        }
+        /*
+         * If it's not explicitly trusted then check if there is an alternative
+         * chain that could be used. We only do this if we haven't already
+         * checked via TRUSTED_FIRST and the user hasn't switched off alternate
+         * chain checking
+         */
+        retry = 0;
+        if (trust != X509_TRUST_TRUSTED
+            && !(ctx->param->flags & X509_V_FLAG_TRUSTED_FIRST)
+            && !(ctx->param->flags & X509_V_FLAG_NO_ALT_CHAINS)) {
+            while (j-- > 1) {
+                xtmp2 = sk_X509_value(ctx->chain, j - 1);
+                ok = ctx->get_issuer(&xtmp, ctx, xtmp2);
+                if (ok < 0)
+                    goto end;
+                /* Check if we found an alternate chain */
+                if (ok > 0) {
+                    /*
+                     * Free up the found cert we'll add it again later
+                     */
+                    X509_free(xtmp);
+
+                    /*
+                     * Dump all the certs above this point - we've found an
+                     * alternate chain
+                     */
+                    while (num > j) {
+                        xtmp = sk_X509_pop(ctx->chain);
+                        X509_free(xtmp);
+                        num--;
+                    }
+                    ctx->last_untrusted = sk_X509_num(ctx->chain);
+                    retry = 1;
+                    break;
+                }
+            }
+        }
+    } while (retry);
+
+    /*
+     * If not explicitly trusted then indicate error unless it's a single
+     * self signed certificate in which case we've indicated an error already
+     * and set bad_chain == 1
+     */
+    if (trust != X509_TRUST_TRUSTED && !bad_chain) {
+        if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss)) {
+            if (ctx->last_untrusted >= num)
+                ctx->error = X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
+            else
+                ctx->error = X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
+            ctx->current_cert = x;
+        } else {
+
+            sk_X509_push(ctx->chain, chain_ss);
+            num++;
+            ctx->last_untrusted = num;
+            ctx->current_cert = chain_ss;
+            ctx->error = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
+            chain_ss = NULL;
+        }
+
+        ctx->error_depth = num - 1;
+        bad_chain = 1;
+        ok = cb(0, ctx);
+        if (!ok)
+            goto end;
+    }
+
+    /* We have the chain complete: now we need to check its purpose */
+    ok = check_chain_extensions(ctx);
+
+    if (!ok)
+        goto end;
+
+    ok = check_id(ctx);
+
+    if (!ok)
+        goto end;
+
+    /*
+     * Check revocation status: we do this after copying parameters because
+     * they may be needed for CRL signature verification.
+     */
+
+    ok = ctx->check_revocation(ctx);
+    if (!ok)
+        goto end;
+
+    int err = X509_chain_check_suiteb(&ctx->error_depth, NULL, ctx->chain,
+                                      ctx->param->flags);
+    if (err != X509_V_OK) {
+        ctx->error = err;
+        ctx->current_cert = sk_X509_value(ctx->chain, ctx->error_depth);
+        ok = cb(0, ctx);
+        if (!ok)
+            goto end;
+    }
+
+    /* At this point, we have a chain and need to verify it */
+    if (ctx->verify != NULL)
+        ok = ctx->verify(ctx);
+    else
+        ok = internal_verify(ctx);
+    if (!ok)
+        goto end;
+
+    /* Check name constraints */
+
+    ok = check_name_constraints(ctx);
+    if (!ok)
+        goto end;
+
+    /* If we get this far evaluate policies */
+    if (!bad_chain && (ctx->param->flags & X509_V_FLAG_POLICY_CHECK))
+        ok = ctx->check_policy(ctx);
+
+ end:
+    if (sktmp != NULL)
+        sk_X509_free(sktmp);
+    if (chain_ss != NULL)
+        X509_free(chain_ss);
+
+    /* Safety net, error returns must set ctx->error */
+    if (ok <= 0 && ctx->error == X509_V_OK)
+        ctx->error = X509_V_ERR_UNSPECIFIED;
+    return ok;
+}
+
+/*
+ * Given a STACK_OF(X509) find the issuer of cert (if any)
+ */
+
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
+{
+    size_t i;
+    X509 *issuer;
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        issuer = sk_X509_value(sk, i);
+        if (ctx->check_issued(ctx, x, issuer))
+            return issuer;
+    }
+    return NULL;
+}
+
+/* Given a possible certificate and issuer check them */
+
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
+{
+    int ret;
+    ret = X509_check_issued(issuer, x);
+    if (ret == X509_V_OK)
+        return 1;
+    /* If we haven't asked for issuer errors don't set ctx */
+    if (!(ctx->param->flags & X509_V_FLAG_CB_ISSUER_CHECK))
+        return 0;
+
+    ctx->error = ret;
+    ctx->current_cert = x;
+    ctx->current_issuer = issuer;
+    return ctx->verify_cb(0, ctx);
+}
+
+/* Alternative lookup method: look from a STACK stored in other_ctx */
+
+static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
+{
+    *issuer = find_issuer(ctx, ctx->other_ctx, x);
+    if (*issuer) {
+        X509_up_ref(*issuer);
+        return 1;
+    } else
+        return 0;
+}
+
+/*
+ * Check a certificate chains extensions for consistency with the supplied
+ * purpose
+ */
+
+static int check_chain_extensions(X509_STORE_CTX *ctx)
+{
+    int i, ok = 0, plen = 0;
+    X509 *x;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    int proxy_path_length = 0;
+    int purpose;
+    int allow_proxy_certs;
+    cb = ctx->verify_cb;
+
+    enum {
+        // ca_or_leaf allows either type of certificate so that direct use of
+        // self-signed certificates works.
+        ca_or_leaf,
+        must_be_ca,
+        must_not_be_ca,
+    } ca_requirement;
+
+    /* CRL path validation */
+    if (ctx->parent) {
+        allow_proxy_certs = 0;
+        purpose = X509_PURPOSE_CRL_SIGN;
+    } else {
+        allow_proxy_certs =
+            ! !(ctx->param->flags & X509_V_FLAG_ALLOW_PROXY_CERTS);
+        purpose = ctx->param->purpose;
+    }
+
+    ca_requirement = ca_or_leaf;
+
+    /* Check all untrusted certificates */
+    for (i = 0; i < ctx->last_untrusted; i++) {
+        int ret;
+        x = sk_X509_value(ctx->chain, i);
+        if (!(ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+            && (x->ex_flags & EXFLAG_CRITICAL)) {
+            ctx->error = X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        if (!allow_proxy_certs && (x->ex_flags & EXFLAG_PROXY)) {
+            ctx->error = X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+
+        switch (ca_requirement) {
+        case ca_or_leaf:
+            ret = 1;
+            break;
+        case must_not_be_ca:
+            if (X509_check_ca(x)) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_NON_CA;
+            } else
+                ret = 1;
+            break;
+        case must_be_ca:
+            if (!X509_check_ca(x)) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_CA;
+            } else
+                ret = 1;
+            break;
+        default:
+            // impossible.
+            ret = 0;
+        }
+
+        if (ret == 0) {
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        if (ctx->param->purpose > 0) {
+            ret = X509_check_purpose(x, purpose, ca_requirement == must_be_ca);
+            if (ret != 1) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_PURPOSE;
+                ctx->error_depth = i;
+                ctx->current_cert = x;
+                ok = cb(0, ctx);
+                if (!ok)
+                    goto end;
+            }
+        }
+        /* Check pathlen if not self issued */
+        if ((i > 1) && !(x->ex_flags & EXFLAG_SI)
+            && (x->ex_pathlen != -1)
+            && (plen > (x->ex_pathlen + proxy_path_length + 1))) {
+            ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        /* Increment path length if not self issued */
+        if (!(x->ex_flags & EXFLAG_SI))
+            plen++;
+        /*
+         * If this certificate is a proxy certificate, the next certificate
+         * must be another proxy certificate or a EE certificate.  If not,
+         * the next certificate must be a CA certificate.
+         */
+        if (x->ex_flags & EXFLAG_PROXY) {
+            if (x->ex_pcpathlen != -1 && i > x->ex_pcpathlen) {
+                ctx->error = X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED;
+                ctx->error_depth = i;
+                ctx->current_cert = x;
+                ok = cb(0, ctx);
+                if (!ok)
+                    goto end;
+            }
+            proxy_path_length++;
+            ca_requirement = must_not_be_ca;
+        } else {
+            ca_requirement = must_be_ca;
+        }
+    }
+    ok = 1;
+ end:
+    return ok;
+}
+
+static int reject_dns_name_in_common_name(X509 *x509)
+{
+    X509_NAME *name = X509_get_subject_name(x509);
+    int i = -1;
+    for (;;) {
+        i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
+        if (i == -1) {
+            return X509_V_OK;
+        }
+
+        X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, i);
+        ASN1_STRING *common_name = X509_NAME_ENTRY_get_data(entry);
+        unsigned char *idval;
+        int idlen = ASN1_STRING_to_UTF8(&idval, common_name);
+        if (idlen < 0) {
+            return X509_V_ERR_OUT_OF_MEM;
+        }
+        /* Only process attributes that look like host names. Note it is
+         * important that this check be mirrored in |X509_check_host|. */
+        int looks_like_dns = x509v3_looks_like_dns_name(idval, (size_t)idlen);
+        OPENSSL_free(idval);
+        if (looks_like_dns) {
+            return X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS;
+        }
+    }
+}
+
+static int check_name_constraints(X509_STORE_CTX *ctx)
+{
+    int i, j, rv;
+    int has_name_constraints = 0;
+    /* Check name constraints for all certificates */
+    for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--) {
+        X509 *x = sk_X509_value(ctx->chain, i);
+        /* Ignore self issued certs unless last in chain */
+        if (i && (x->ex_flags & EXFLAG_SI))
+            continue;
+        /*
+         * Check against constraints for all certificates higher in chain
+         * including trust anchor. Trust anchor not strictly speaking needed
+         * but if it includes constraints it is to be assumed it expects them
+         * to be obeyed.
+         */
+        for (j = sk_X509_num(ctx->chain) - 1; j > i; j--) {
+            NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
+            if (nc) {
+                has_name_constraints = 1;
+                rv = NAME_CONSTRAINTS_check(x, nc);
+                switch (rv) {
+                case X509_V_OK:
+                    continue;
+                case X509_V_ERR_OUT_OF_MEM:
+                    ctx->error = rv;
+                    return 0;
+                default:
+                    ctx->error = rv;
+                    ctx->error_depth = i;
+                    ctx->current_cert = x;
+                    if (!ctx->verify_cb(0, ctx))
+                        return 0;
+                    break;
+                }
+            }
+        }
+    }
+
+    /* Name constraints do not match against the common name, but
+     * |X509_check_host| still implements the legacy behavior where, on
+     * certificates lacking a SAN list, DNS-like names in the common name are
+     * checked instead.
+     *
+     * While we could apply the name constraints to the common name, name
+     * constraints are rare enough that can hold such certificates to a higher
+     * standard. Note this does not make "DNS-like" heuristic failures any
+     * worse. A decorative common-name misidentified as a DNS name would fail
+     * the name constraint anyway. */
+    X509 *leaf = sk_X509_value(ctx->chain, 0);
+    if (has_name_constraints && leaf->altname == NULL) {
+        rv = reject_dns_name_in_common_name(leaf);
+        switch (rv) {
+        case X509_V_OK:
+            break;
+        case X509_V_ERR_OUT_OF_MEM:
+            ctx->error = rv;
+            return 0;
+        default:
+            ctx->error = rv;
+            ctx->error_depth = i;
+            ctx->current_cert = leaf;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+            break;
+        }
+    }
+
+    return 1;
+}
+
+static int check_id_error(X509_STORE_CTX *ctx, int errcode)
+{
+    ctx->error = errcode;
+    ctx->current_cert = ctx->cert;
+    ctx->error_depth = 0;
+    return ctx->verify_cb(0, ctx);
+}
+
+static int check_hosts(X509 *x, X509_VERIFY_PARAM_ID *id)
+{
+    size_t i;
+    size_t n = sk_OPENSSL_STRING_num(id->hosts);
+    char *name;
+
+    if (id->peername != NULL) {
+        OPENSSL_free(id->peername);
+        id->peername = NULL;
+    }
+    for (i = 0; i < n; ++i) {
+        name = sk_OPENSSL_STRING_value(id->hosts, i);
+        if (X509_check_host(x, name, strlen(name), id->hostflags,
+                            &id->peername) > 0)
+            return 1;
+    }
+    return n == 0;
+}
+
+static int check_id(X509_STORE_CTX *ctx)
+{
+    X509_VERIFY_PARAM *vpm = ctx->param;
+    X509_VERIFY_PARAM_ID *id = vpm->id;
+    X509 *x = ctx->cert;
+    if (id->poison) {
+        if (!check_id_error(ctx, X509_V_ERR_INVALID_CALL))
+            return 0;
+    }
+    if (id->hosts && check_hosts(x, id) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_HOSTNAME_MISMATCH))
+            return 0;
+    }
+    if (id->email && X509_check_email(x, id->email, id->emaillen, 0) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_EMAIL_MISMATCH))
+            return 0;
+    }
+    if (id->ip && X509_check_ip(x, id->ip, id->iplen, 0) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_IP_ADDRESS_MISMATCH))
+            return 0;
+    }
+    return 1;
+}
+
+static int check_trust(X509_STORE_CTX *ctx)
+{
+    size_t i;
+    int ok;
+    X509 *x = NULL;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    cb = ctx->verify_cb;
+    /* Check all trusted certificates in chain */
+    for (i = ctx->last_untrusted; i < sk_X509_num(ctx->chain); i++) {
+        x = sk_X509_value(ctx->chain, i);
+        ok = X509_check_trust(x, ctx->param->trust, 0);
+        /* If explicitly trusted return trusted */
+        if (ok == X509_TRUST_TRUSTED)
+            return X509_TRUST_TRUSTED;
+        /*
+         * If explicitly rejected notify callback and reject if not
+         * overridden.
+         */
+        if (ok == X509_TRUST_REJECTED) {
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ctx->error = X509_V_ERR_CERT_REJECTED;
+            ok = cb(0, ctx);
+            if (!ok)
+                return X509_TRUST_REJECTED;
+        }
+    }
+    /*
+     * If we accept partial chains and have at least one trusted certificate
+     * return success.
+     */
+    if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN) {
+        X509 *mx;
+        if (ctx->last_untrusted < (int)sk_X509_num(ctx->chain))
+            return X509_TRUST_TRUSTED;
+        x = sk_X509_value(ctx->chain, 0);
+        mx = lookup_cert_match(ctx, x);
+        if (mx) {
+            (void)sk_X509_set(ctx->chain, 0, mx);
+            X509_free(x);
+            ctx->last_untrusted = 0;
+            return X509_TRUST_TRUSTED;
+        }
+    }
+
+    /*
+     * If no trusted certs in chain at all return untrusted and allow
+     * standard (no issuer cert) etc errors to be indicated.
+     */
+    return X509_TRUST_UNTRUSTED;
+}
+
+static int check_revocation(X509_STORE_CTX *ctx)
+{
+    int i, last, ok;
+    if (!(ctx->param->flags & X509_V_FLAG_CRL_CHECK))
+        return 1;
+    if (ctx->param->flags & X509_V_FLAG_CRL_CHECK_ALL)
+        last = sk_X509_num(ctx->chain) - 1;
+    else {
+        /* If checking CRL paths this isn't the EE certificate */
+        if (ctx->parent)
+            return 1;
+        last = 0;
+    }
+    for (i = 0; i <= last; i++) {
+        ctx->error_depth = i;
+        ok = check_cert(ctx);
+        if (!ok)
+            return ok;
+    }
+    return 1;
+}
+
+static int check_cert(X509_STORE_CTX *ctx)
+{
+    X509_CRL *crl = NULL, *dcrl = NULL;
+    X509 *x;
+    int ok = 0, cnum;
+    unsigned int last_reasons;
+    cnum = ctx->error_depth;
+    x = sk_X509_value(ctx->chain, cnum);
+    ctx->current_cert = x;
+    ctx->current_issuer = NULL;
+    ctx->current_crl_score = 0;
+    ctx->current_reasons = 0;
+    while (ctx->current_reasons != CRLDP_ALL_REASONS) {
+        last_reasons = ctx->current_reasons;
+        /* Try to retrieve relevant CRL */
+        if (ctx->get_crl)
+            ok = ctx->get_crl(ctx, &crl, x);
+        else
+            ok = get_crl_delta(ctx, &crl, &dcrl, x);
+        /*
+         * If error looking up CRL, nothing we can do except notify callback
+         */
+        if (!ok) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
+            ok = ctx->verify_cb(0, ctx);
+            goto err;
+        }
+        ctx->current_crl = crl;
+        ok = ctx->check_crl(ctx, crl);
+        if (!ok)
+            goto err;
+
+        if (dcrl) {
+            ok = ctx->check_crl(ctx, dcrl);
+            if (!ok)
+                goto err;
+            ok = ctx->cert_crl(ctx, dcrl, x);
+            if (!ok)
+                goto err;
+        } else
+            ok = 1;
+
+        /* Don't look in full CRL if delta reason is removefromCRL */
+        if (ok != 2) {
+            ok = ctx->cert_crl(ctx, crl, x);
+            if (!ok)
+                goto err;
+        }
+
+        X509_CRL_free(crl);
+        X509_CRL_free(dcrl);
+        crl = NULL;
+        dcrl = NULL;
+        /*
+         * If reasons not updated we wont get anywhere by another iteration,
+         * so exit loop.
+         */
+        if (last_reasons == ctx->current_reasons) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
+            ok = ctx->verify_cb(0, ctx);
+            goto err;
+        }
+    }
+ err:
+    X509_CRL_free(crl);
+    X509_CRL_free(dcrl);
+
+    ctx->current_crl = NULL;
+    return ok;
+
+}
+
+/* Check CRL times against values in X509_STORE_CTX */
+
+static int check_crl_time(X509_STORE_CTX *ctx, X509_CRL *crl, int notify)
+{
+    time_t *ptime;
+    int i;
+    if (notify)
+        ctx->current_crl = crl;
+    if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+        ptime = &ctx->param->check_time;
+    else
+        ptime = NULL;
+
+    i = X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
+    if (i == 0) {
+        if (!notify)
+            return 0;
+        ctx->error = X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i > 0) {
+        if (!notify)
+            return 0;
+        ctx->error = X509_V_ERR_CRL_NOT_YET_VALID;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (X509_CRL_get_nextUpdate(crl)) {
+        i = X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
+
+        if (i == 0) {
+            if (!notify)
+                return 0;
+            ctx->error = X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+        /* Ignore expiry of base CRL is delta is valid */
+        if ((i < 0) && !(ctx->current_crl_score & CRL_SCORE_TIME_DELTA)) {
+            if (!notify)
+                return 0;
+            ctx->error = X509_V_ERR_CRL_HAS_EXPIRED;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+    }
+
+    if (notify)
+        ctx->current_crl = NULL;
+
+    return 1;
+}
+
+static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl, X509_CRL **pdcrl,
+                      X509 **pissuer, int *pscore, unsigned int *preasons,
+                      STACK_OF(X509_CRL) *crls)
+{
+    int crl_score, best_score = *pscore;
+    size_t i;
+    unsigned int reasons, best_reasons = 0;
+    X509 *x = ctx->current_cert;
+    X509_CRL *crl, *best_crl = NULL;
+    X509 *crl_issuer = NULL, *best_crl_issuer = NULL;
+
+    for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+        crl = sk_X509_CRL_value(crls, i);
+        reasons = *preasons;
+        crl_score = get_crl_score(ctx, &crl_issuer, &reasons, crl, x);
+        if (crl_score < best_score || crl_score == 0)
+            continue;
+        /* If current CRL is equivalent use it if it is newer */
+        if (crl_score == best_score && best_crl != NULL) {
+            int day, sec;
+            if (ASN1_TIME_diff(&day, &sec, X509_CRL_get_lastUpdate(best_crl),
+                               X509_CRL_get_lastUpdate(crl)) == 0)
+                continue;
+            /*
+             * ASN1_TIME_diff never returns inconsistent signs for |day|
+             * and |sec|.
+             */
+            if (day <= 0 && sec <= 0)
+                continue;
+        }
+        best_crl = crl;
+        best_crl_issuer = crl_issuer;
+        best_score = crl_score;
+        best_reasons = reasons;
+    }
+
+    if (best_crl) {
+        if (*pcrl)
+            X509_CRL_free(*pcrl);
+        *pcrl = best_crl;
+        *pissuer = best_crl_issuer;
+        *pscore = best_score;
+        *preasons = best_reasons;
+        X509_CRL_up_ref(best_crl);
+        if (*pdcrl) {
+            X509_CRL_free(*pdcrl);
+            *pdcrl = NULL;
+        }
+        get_delta_sk(ctx, pdcrl, pscore, best_crl, crls);
+    }
+
+    if (best_score >= CRL_SCORE_VALID)
+        return 1;
+
+    return 0;
+}
+
+/*
+ * Compare two CRL extensions for delta checking purposes. They should be
+ * both present or both absent. If both present all fields must be identical.
+ */
+
+static int crl_extension_match(X509_CRL *a, X509_CRL *b, int nid)
+{
+    ASN1_OCTET_STRING *exta, *extb;
+    int i;
+    i = X509_CRL_get_ext_by_NID(a, nid, -1);
+    if (i >= 0) {
+        /* Can't have multiple occurrences */
+        if (X509_CRL_get_ext_by_NID(a, nid, i) != -1)
+            return 0;
+        exta = X509_EXTENSION_get_data(X509_CRL_get_ext(a, i));
+    } else
+        exta = NULL;
+
+    i = X509_CRL_get_ext_by_NID(b, nid, -1);
+
+    if (i >= 0) {
+
+        if (X509_CRL_get_ext_by_NID(b, nid, i) != -1)
+            return 0;
+        extb = X509_EXTENSION_get_data(X509_CRL_get_ext(b, i));
+    } else
+        extb = NULL;
+
+    if (!exta && !extb)
+        return 1;
+
+    if (!exta || !extb)
+        return 0;
+
+    if (ASN1_OCTET_STRING_cmp(exta, extb))
+        return 0;
+
+    return 1;
+}
+
+/* See if a base and delta are compatible */
+
+static int check_delta_base(X509_CRL *delta, X509_CRL *base)
+{
+    /* Delta CRL must be a delta */
+    if (!delta->base_crl_number)
+        return 0;
+    /* Base must have a CRL number */
+    if (!base->crl_number)
+        return 0;
+    /* Issuer names must match */
+    if (X509_NAME_cmp(X509_CRL_get_issuer(base), X509_CRL_get_issuer(delta)))
+        return 0;
+    /* AKID and IDP must match */
+    if (!crl_extension_match(delta, base, NID_authority_key_identifier))
+        return 0;
+    if (!crl_extension_match(delta, base, NID_issuing_distribution_point))
+        return 0;
+    /* Delta CRL base number must not exceed Full CRL number. */
+    if (ASN1_INTEGER_cmp(delta->base_crl_number, base->crl_number) > 0)
+        return 0;
+    /* Delta CRL number must exceed full CRL number */
+    if (ASN1_INTEGER_cmp(delta->crl_number, base->crl_number) > 0)
+        return 1;
+    return 0;
+}
+
+/*
+ * For a given base CRL find a delta... maybe extend to delta scoring or
+ * retrieve a chain of deltas...
+ */
+
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl, int *pscore,
+                         X509_CRL *base, STACK_OF(X509_CRL) *crls)
+{
+    X509_CRL *delta;
+    size_t i;
+    if (!(ctx->param->flags & X509_V_FLAG_USE_DELTAS))
+        return;
+    if (!((ctx->current_cert->ex_flags | base->flags) & EXFLAG_FRESHEST))
+        return;
+    for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+        delta = sk_X509_CRL_value(crls, i);
+        if (check_delta_base(delta, base)) {
+            if (check_crl_time(ctx, delta, 0))
+                *pscore |= CRL_SCORE_TIME_DELTA;
+            X509_CRL_up_ref(delta);
+            *dcrl = delta;
+            return;
+        }
+    }
+    *dcrl = NULL;
+}
+
+/*
+ * For a given CRL return how suitable it is for the supplied certificate
+ * 'x'. The return value is a mask of several criteria. If the issuer is not
+ * the certificate issuer this is returned in *pissuer. The reasons mask is
+ * also used to determine if the CRL is suitable: if no new reasons the CRL
+ * is rejected, otherwise reasons is updated.
+ */
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+                         unsigned int *preasons, X509_CRL *crl, X509 *x)
+{
+
+    int crl_score = 0;
+    unsigned int tmp_reasons = *preasons, crl_reasons;
+
+    /* First see if we can reject CRL straight away */
+
+    /* Invalid IDP cannot be processed */
+    if (crl->idp_flags & IDP_INVALID)
+        return 0;
+    /* Reason codes or indirect CRLs need extended CRL support */
+    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT)) {
+        if (crl->idp_flags & (IDP_INDIRECT | IDP_REASONS))
+            return 0;
+    } else if (crl->idp_flags & IDP_REASONS) {
+        /* If no new reasons reject */
+        if (!(crl->idp_reasons & ~tmp_reasons))
+            return 0;
+    }
+    /* Don't process deltas at this stage */
+    else if (crl->base_crl_number)
+        return 0;
+    /* If issuer name doesn't match certificate need indirect CRL */
+    if (X509_NAME_cmp(X509_get_issuer_name(x), X509_CRL_get_issuer(crl))) {
+        if (!(crl->idp_flags & IDP_INDIRECT))
+            return 0;
+    } else
+        crl_score |= CRL_SCORE_ISSUER_NAME;
+
+    if (!(crl->flags & EXFLAG_CRITICAL))
+        crl_score |= CRL_SCORE_NOCRITICAL;
+
+    /* Check expiry */
+    if (check_crl_time(ctx, crl, 0))
+        crl_score |= CRL_SCORE_TIME;
+
+    /* Check authority key ID and locate certificate issuer */
+    crl_akid_check(ctx, crl, pissuer, &crl_score);
+
+    /* If we can't locate certificate issuer at this point forget it */
+
+    if (!(crl_score & CRL_SCORE_AKID))
+        return 0;
+
+    /* Check cert for matching CRL distribution points */
+
+    if (crl_crldp_check(x, crl, crl_score, &crl_reasons)) {
+        /* If no new reasons reject */
+        if (!(crl_reasons & ~tmp_reasons))
+            return 0;
+        tmp_reasons |= crl_reasons;
+        crl_score |= CRL_SCORE_SCOPE;
+    }
+
+    *preasons = tmp_reasons;
+
+    return crl_score;
+
+}
+
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
+                           X509 **pissuer, int *pcrl_score)
+{
+    X509 *crl_issuer = NULL;
+    X509_NAME *cnm = X509_CRL_get_issuer(crl);
+    int cidx = ctx->error_depth;
+    size_t i;
+
+    if ((size_t)cidx != sk_X509_num(ctx->chain) - 1)
+        cidx++;
+
+    crl_issuer = sk_X509_value(ctx->chain, cidx);
+
+    if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+        if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
+            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
+            *pissuer = crl_issuer;
+            return;
+        }
+    }
+
+    for (cidx++; cidx < (int)sk_X509_num(ctx->chain); cidx++) {
+        crl_issuer = sk_X509_value(ctx->chain, cidx);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_SAME_PATH;
+            *pissuer = crl_issuer;
+            return;
+        }
+    }
+
+    /* Anything else needs extended CRL support */
+
+    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))
+        return;
+
+    /*
+     * Otherwise the CRL issuer is not on the path. Look for it in the set of
+     * untrusted certificates.
+     */
+    for (i = 0; i < sk_X509_num(ctx->untrusted); i++) {
+        crl_issuer = sk_X509_value(ctx->untrusted, i);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pissuer = crl_issuer;
+            *pcrl_score |= CRL_SCORE_AKID;
+            return;
+        }
+    }
+
+    for (i = 0; i < sk_X509_num(ctx->ctx->additional_untrusted); i++) {
+        crl_issuer = sk_X509_value(ctx->ctx->additional_untrusted, i);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pissuer = crl_issuer;
+            *pcrl_score |= CRL_SCORE_AKID;
+            return;
+        }
+    }
+}
+
+/*
+ * Check the path of a CRL issuer certificate. This creates a new
+ * X509_STORE_CTX and populates it with most of the parameters from the
+ * parent. This could be optimised somewhat since a lot of path checking will
+ * be duplicated by the parent, but this will rarely be used in practice.
+ */
+
+static int check_crl_path(X509_STORE_CTX *ctx, X509 *x)
+{
+    X509_STORE_CTX crl_ctx;
+    int ret;
+    /* Don't allow recursive CRL path validation */
+    if (ctx->parent)
+        return 0;
+    if (!X509_STORE_CTX_init(&crl_ctx, ctx->ctx, x, ctx->untrusted))
+        return -1;
+
+    crl_ctx.crls = ctx->crls;
+    /* Copy verify params across */
+    X509_STORE_CTX_set0_param(&crl_ctx, ctx->param);
+
+    crl_ctx.parent = ctx;
+    crl_ctx.verify_cb = ctx->verify_cb;
+
+    /* Verify CRL issuer */
+    ret = X509_verify_cert(&crl_ctx);
+
+    if (ret <= 0)
+        goto err;
+
+    /* Check chain is acceptable */
+
+    ret = check_crl_chain(ctx, ctx->chain, crl_ctx.chain);
+ err:
+    X509_STORE_CTX_cleanup(&crl_ctx);
+    return ret;
+}
+
+/*
+ * RFC3280 says nothing about the relationship between CRL path and
+ * certificate path, which could lead to situations where a certificate could
+ * be revoked or validated by a CA not authorised to do so. RFC5280 is more
+ * strict and states that the two paths must end in the same trust anchor,
+ * though some discussions remain... until this is resolved we use the
+ * RFC5280 version
+ */
+
+static int check_crl_chain(X509_STORE_CTX *ctx,
+                           STACK_OF(X509) *cert_path,
+                           STACK_OF(X509) *crl_path)
+{
+    X509 *cert_ta, *crl_ta;
+    cert_ta = sk_X509_value(cert_path, sk_X509_num(cert_path) - 1);
+    crl_ta = sk_X509_value(crl_path, sk_X509_num(crl_path) - 1);
+    if (!X509_cmp(cert_ta, crl_ta))
+        return 1;
+    return 0;
+}
+
+/*
+ * Check for match between two dist point names: three separate cases. 1.
+ * Both are relative names and compare X509_NAME types. 2. One full, one
+ * relative. Compare X509_NAME to GENERAL_NAMES. 3. Both are full names and
+ * compare two GENERAL_NAMES. 4. One is NULL: automatic match.
+ */
+
+static int idp_check_dp(DIST_POINT_NAME *a, DIST_POINT_NAME *b)
+{
+    X509_NAME *nm = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gena, *genb;
+    size_t i, j;
+    if (!a || !b)
+        return 1;
+    if (a->type == 1) {
+        if (!a->dpname)
+            return 0;
+        /* Case 1: two X509_NAME */
+        if (b->type == 1) {
+            if (!b->dpname)
+                return 0;
+            if (!X509_NAME_cmp(a->dpname, b->dpname))
+                return 1;
+            else
+                return 0;
+        }
+        /* Case 2: set name and GENERAL_NAMES appropriately */
+        nm = a->dpname;
+        gens = b->name.fullname;
+    } else if (b->type == 1) {
+        if (!b->dpname)
+            return 0;
+        /* Case 2: set name and GENERAL_NAMES appropriately */
+        gens = a->name.fullname;
+        nm = b->dpname;
+    }
+
+    /* Handle case 2 with one GENERAL_NAMES and one X509_NAME */
+    if (nm) {
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            gena = sk_GENERAL_NAME_value(gens, i);
+            if (gena->type != GEN_DIRNAME)
+                continue;
+            if (!X509_NAME_cmp(nm, gena->d.directoryName))
+                return 1;
+        }
+        return 0;
+    }
+
+    /* Else case 3: two GENERAL_NAMES */
+
+    for (i = 0; i < sk_GENERAL_NAME_num(a->name.fullname); i++) {
+        gena = sk_GENERAL_NAME_value(a->name.fullname, i);
+        for (j = 0; j < sk_GENERAL_NAME_num(b->name.fullname); j++) {
+            genb = sk_GENERAL_NAME_value(b->name.fullname, j);
+            if (!GENERAL_NAME_cmp(gena, genb))
+                return 1;
+        }
+    }
+
+    return 0;
+
+}
+
+static int crldp_check_crlissuer(DIST_POINT *dp, X509_CRL *crl, int crl_score)
+{
+    size_t i;
+    X509_NAME *nm = X509_CRL_get_issuer(crl);
+    /* If no CRLissuer return is successful iff don't need a match */
+    if (!dp->CRLissuer)
+        return ! !(crl_score & CRL_SCORE_ISSUER_NAME);
+    for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
+        if (gen->type != GEN_DIRNAME)
+            continue;
+        if (!X509_NAME_cmp(gen->d.directoryName, nm))
+            return 1;
+    }
+    return 0;
+}
+
+/* Check CRLDP and IDP */
+
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+                           unsigned int *preasons)
+{
+    size_t i;
+    if (crl->idp_flags & IDP_ONLYATTR)
+        return 0;
+    if (x->ex_flags & EXFLAG_CA) {
+        if (crl->idp_flags & IDP_ONLYUSER)
+            return 0;
+    } else {
+        if (crl->idp_flags & IDP_ONLYCA)
+            return 0;
+    }
+    *preasons = crl->idp_reasons;
+    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++) {
+        DIST_POINT *dp = sk_DIST_POINT_value(x->crldp, i);
+        if (crldp_check_crlissuer(dp, crl, crl_score)) {
+            if (!crl->idp || idp_check_dp(dp->distpoint, crl->idp->distpoint)) {
+                *preasons &= dp->dp_reasons;
+                return 1;
+            }
+        }
+    }
+    if ((!crl->idp || !crl->idp->distpoint)
+        && (crl_score & CRL_SCORE_ISSUER_NAME))
+        return 1;
+    return 0;
+}
+
+/*
+ * Retrieve CRL corresponding to current certificate. If deltas enabled try
+ * to find a delta CRL too
+ */
+
+static int get_crl_delta(X509_STORE_CTX *ctx,
+                         X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x)
+{
+    int ok;
+    X509 *issuer = NULL;
+    int crl_score = 0;
+    unsigned int reasons;
+    X509_CRL *crl = NULL, *dcrl = NULL;
+    STACK_OF(X509_CRL) *skcrl;
+    X509_NAME *nm = X509_get_issuer_name(x);
+    reasons = ctx->current_reasons;
+    ok = get_crl_sk(ctx, &crl, &dcrl,
+                    &issuer, &crl_score, &reasons, ctx->crls);
+
+    if (ok)
+        goto done;
+
+    /* Lookup CRLs from store */
+
+    skcrl = ctx->lookup_crls(ctx, nm);
+
+    /* If no CRLs found and a near match from get_crl_sk use that */
+    if (!skcrl && crl)
+        goto done;
+
+    get_crl_sk(ctx, &crl, &dcrl, &issuer, &crl_score, &reasons, skcrl);
+
+    sk_X509_CRL_pop_free(skcrl, X509_CRL_free);
+
+ done:
+
+    /* If we got any kind of CRL use it and return success */
+    if (crl) {
+        ctx->current_issuer = issuer;
+        ctx->current_crl_score = crl_score;
+        ctx->current_reasons = reasons;
+        *pcrl = crl;
+        *pdcrl = dcrl;
+        return 1;
+    }
+
+    return 0;
+}
+
+/* Check CRL validity */
+static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
+{
+    X509 *issuer = NULL;
+    EVP_PKEY *ikey = NULL;
+    int ok = 0, chnum, cnum;
+    cnum = ctx->error_depth;
+    chnum = sk_X509_num(ctx->chain) - 1;
+    /* if we have an alternative CRL issuer cert use that */
+    if (ctx->current_issuer)
+        issuer = ctx->current_issuer;
+
+    /*
+     * Else find CRL issuer: if not last certificate then issuer is next
+     * certificate in chain.
+     */
+    else if (cnum < chnum)
+        issuer = sk_X509_value(ctx->chain, cnum + 1);
+    else {
+        issuer = sk_X509_value(ctx->chain, chnum);
+        /* If not self signed, can't check signature */
+        if (!ctx->check_issued(ctx, issuer, issuer)) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER;
+            ok = ctx->verify_cb(0, ctx);
+            if (!ok)
+                goto err;
+        }
+    }
+
+    if (issuer) {
+        /*
+         * Skip most tests for deltas because they have already been done
+         */
+        if (!crl->base_crl_number) {
+            /* Check for cRLSign bit if keyUsage present */
+            if ((issuer->ex_flags & EXFLAG_KUSAGE) &&
+                !(issuer->ex_kusage & KU_CRL_SIGN)) {
+                ctx->error = X509_V_ERR_KEYUSAGE_NO_CRL_SIGN;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+            if (!(ctx->current_crl_score & CRL_SCORE_SCOPE)) {
+                ctx->error = X509_V_ERR_DIFFERENT_CRL_SCOPE;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+            if (!(ctx->current_crl_score & CRL_SCORE_SAME_PATH)) {
+                if (check_crl_path(ctx, ctx->current_issuer) <= 0) {
+                    ctx->error = X509_V_ERR_CRL_PATH_VALIDATION_ERROR;
+                    ok = ctx->verify_cb(0, ctx);
+                    if (!ok)
+                        goto err;
+                }
+            }
+
+            if (crl->idp_flags & IDP_INVALID) {
+                ctx->error = X509_V_ERR_INVALID_EXTENSION;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+        }
+
+        if (!(ctx->current_crl_score & CRL_SCORE_TIME)) {
+            ok = check_crl_time(ctx, crl, 1);
+            if (!ok)
+                goto err;
+        }
+
+        /* Attempt to get issuer certificate public key */
+        ikey = X509_get_pubkey(issuer);
+
+        if (!ikey) {
+            ctx->error = X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+            ok = ctx->verify_cb(0, ctx);
+            if (!ok)
+                goto err;
+        } else {
+            int rv;
+            rv = X509_CRL_check_suiteb(crl, ikey, ctx->param->flags);
+            if (rv != X509_V_OK) {
+                ctx->error = rv;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+            /* Verify CRL signature */
+            if (X509_CRL_verify(crl, ikey) <= 0) {
+                ctx->error = X509_V_ERR_CRL_SIGNATURE_FAILURE;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+        }
+    }
+
+    ok = 1;
+
+ err:
+    EVP_PKEY_free(ikey);
+    return ok;
+}
+
+/* Check certificate against CRL */
+static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
+{
+    int ok;
+    X509_REVOKED *rev;
+    /*
+     * The rules changed for this... previously if a CRL contained unhandled
+     * critical extensions it could still be used to indicate a certificate
+     * was revoked. This has since been changed since critical extension can
+     * change the meaning of CRL entries.
+     */
+    if (!(ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+        && (crl->flags & EXFLAG_CRITICAL)) {
+        ctx->error = X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION;
+        ok = ctx->verify_cb(0, ctx);
+        if (!ok)
+            return 0;
+    }
+    /*
+     * Look for serial number of certificate in CRL If found make sure reason
+     * is not removeFromCRL.
+     */
+    if (X509_CRL_get0_by_cert(crl, &rev, x)) {
+        if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
+            return 2;
+        ctx->error = X509_V_ERR_CERT_REVOKED;
+        ok = ctx->verify_cb(0, ctx);
+        if (!ok)
+            return 0;
+    }
+
+    return 1;
+}
+
+static int check_policy(X509_STORE_CTX *ctx)
+{
+    int ret;
+    if (ctx->parent)
+        return 1;
+    ret = X509_policy_check(&ctx->tree, &ctx->explicit_policy, ctx->chain,
+                            ctx->param->policies, ctx->param->flags);
+    if (ret == 0) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        return 0;
+    }
+    /* Invalid or inconsistent extensions */
+    if (ret == -1) {
+        /*
+         * Locate certificates with bad extensions and notify callback.
+         */
+        X509 *x;
+        size_t i;
+        for (i = 1; i < sk_X509_num(ctx->chain); i++) {
+            x = sk_X509_value(ctx->chain, i);
+            if (!(x->ex_flags & EXFLAG_INVALID_POLICY))
+                continue;
+            ctx->current_cert = x;
+            ctx->error = X509_V_ERR_INVALID_POLICY_EXTENSION;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+        return 1;
+    }
+    if (ret == -2) {
+        ctx->current_cert = NULL;
+        ctx->error = X509_V_ERR_NO_EXPLICIT_POLICY;
+        return ctx->verify_cb(0, ctx);
+    }
+
+    if (ctx->param->flags & X509_V_FLAG_NOTIFY_POLICY) {
+        ctx->current_cert = NULL;
+        /*
+         * Verification errors need to be "sticky", a callback may have allowed
+         * an SSL handshake to continue despite an error, and we must then
+         * remain in an error state.  Therefore, we MUST NOT clear earlier
+         * verification errors by setting the error to X509_V_OK.
+         */
+        if (!ctx->verify_cb(2, ctx))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int check_cert_time(X509_STORE_CTX *ctx, X509 *x)
+{
+    time_t *ptime;
+    int i;
+
+    if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+        ptime = &ctx->param->check_time;
+    else
+        ptime = NULL;
+
+    i = X509_cmp_time(X509_get_notBefore(x), ptime);
+    if (i == 0) {
+        ctx->error = X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i > 0) {
+        ctx->error = X509_V_ERR_CERT_NOT_YET_VALID;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    i = X509_cmp_time(X509_get_notAfter(x), ptime);
+    if (i == 0) {
+        ctx->error = X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i < 0) {
+        ctx->error = X509_V_ERR_CERT_HAS_EXPIRED;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int internal_verify(X509_STORE_CTX *ctx)
+{
+    int ok = 0, n;
+    X509 *xs, *xi;
+    EVP_PKEY *pkey = NULL;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+
+    cb = ctx->verify_cb;
+
+    n = sk_X509_num(ctx->chain);
+    ctx->error_depth = n - 1;
+    n--;
+    xi = sk_X509_value(ctx->chain, n);
+
+    if (ctx->check_issued(ctx, xi, xi))
+        xs = xi;
+    else {
+        if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN) {
+            xs = xi;
+            goto check_cert;
+        }
+        if (n <= 0) {
+            ctx->error = X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
+            ctx->current_cert = xi;
+            ok = cb(0, ctx);
+            goto end;
+        } else {
+            n--;
+            ctx->error_depth = n;
+            xs = sk_X509_value(ctx->chain, n);
+        }
+    }
+
+/*      ctx->error=0;  not needed */
+    while (n >= 0) {
+        ctx->error_depth = n;
+
+        /*
+         * Skip signature check for self signed certificates unless
+         * explicitly asked for. It doesn't add any security and just wastes
+         * time.
+         */
+        if (xs != xi || (ctx->param->flags & X509_V_FLAG_CHECK_SS_SIGNATURE)) {
+            if ((pkey = X509_get_pubkey(xi)) == NULL) {
+                ctx->error = X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+                ctx->current_cert = xi;
+                ok = (*cb) (0, ctx);
+                if (!ok)
+                    goto end;
+            } else if (X509_verify(xs, pkey) <= 0) {
+                ctx->error = X509_V_ERR_CERT_SIGNATURE_FAILURE;
+                ctx->current_cert = xs;
+                ok = (*cb) (0, ctx);
+                if (!ok) {
+                    EVP_PKEY_free(pkey);
+                    goto end;
+                }
+            }
+            EVP_PKEY_free(pkey);
+            pkey = NULL;
+        }
+
+ check_cert:
+        ok = check_cert_time(ctx, xs);
+        if (!ok)
+            goto end;
+
+        /* The last error (if any) is still in the error value */
+        ctx->current_issuer = xi;
+        ctx->current_cert = xs;
+        ok = (*cb) (1, ctx);
+        if (!ok)
+            goto end;
+
+        n--;
+        if (n >= 0) {
+            xi = xs;
+            xs = sk_X509_value(ctx->chain, n);
+        }
+    }
+    ok = 1;
+ end:
+    return ok;
+}
+
+int X509_cmp_current_time(const ASN1_TIME *ctm)
+{
+    return X509_cmp_time(ctm, NULL);
+}
+
+int X509_cmp_time(const ASN1_TIME *ctm, time_t *cmp_time)
+{
+    static const size_t utctime_length = sizeof("YYMMDDHHMMSSZ") - 1;
+    static const size_t generalizedtime_length = sizeof("YYYYMMDDHHMMSSZ") - 1;
+    ASN1_TIME *asn1_cmp_time = NULL;
+    int i, day, sec, ret = 0;
+
+    /*
+     * Note that ASN.1 allows much more slack in the time format than RFC5280.
+     * In RFC5280, the representation is fixed:
+     * UTCTime: YYMMDDHHMMSSZ
+     * GeneralizedTime: YYYYMMDDHHMMSSZ
+     *
+     * We do NOT currently enforce the following RFC 5280 requirement:
+     * "CAs conforming to this profile MUST always encode certificate
+     *  validity dates through the year 2049 as UTCTime; certificate validity
+     *  dates in 2050 or later MUST be encoded as GeneralizedTime."
+     */
+    switch (ctm->type) {
+    case V_ASN1_UTCTIME:
+        if (ctm->length != (int)(utctime_length))
+            return 0;
+        break;
+    case V_ASN1_GENERALIZEDTIME:
+        if (ctm->length != (int)(generalizedtime_length))
+            return 0;
+        break;
+    default:
+        return 0;
+    }
+
+    /**
+     * Verify the format: the ASN.1 functions we use below allow a more
+     * flexible format than what's mandated by RFC 5280.
+     * Digit and date ranges will be verified in the conversion methods.
+     */
+    for (i = 0; i < ctm->length - 1; i++) {
+        if (!isdigit(ctm->data[i]))
+            return 0;
+    }
+    if (ctm->data[ctm->length - 1] != 'Z')
+        return 0;
+
+    /*
+     * There is ASN1_UTCTIME_cmp_time_t but no
+     * ASN1_GENERALIZEDTIME_cmp_time_t or ASN1_TIME_cmp_time_t,
+     * so we go through ASN.1
+     */
+    asn1_cmp_time = X509_time_adj(NULL, 0, cmp_time);
+    if (asn1_cmp_time == NULL)
+        goto err;
+    if (!ASN1_TIME_diff(&day, &sec, ctm, asn1_cmp_time))
+        goto err;
+
+    /*
+     * X509_cmp_time comparison is <=.
+     * The return value 0 is reserved for errors.
+     */
+    ret = (day >= 0 && sec >= 0) ? -1 : 1;
+
+ err:
+    ASN1_TIME_free(asn1_cmp_time);
+    return ret;
+}
+
+ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
+{
+    return X509_time_adj(s, adj, NULL);
+}
+
+ASN1_TIME *X509_time_adj(ASN1_TIME *s, long offset_sec, time_t *in_tm)
+{
+    return X509_time_adj_ex(s, 0, offset_sec, in_tm);
+}
+
+ASN1_TIME *X509_time_adj_ex(ASN1_TIME *s,
+                            int offset_day, long offset_sec, time_t *in_tm)
+{
+    time_t t = 0;
+
+    if (in_tm)
+        t = *in_tm;
+    else
+        time(&t);
+
+    if (s && !(s->flags & ASN1_STRING_FLAG_MSTRING)) {
+        if (s->type == V_ASN1_UTCTIME)
+            return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
+        if (s->type == V_ASN1_GENERALIZEDTIME)
+            return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
+    }
+    return ASN1_TIME_adj(s, t, offset_day, offset_sec);
+}
+
+/* Make a delta CRL as the diff between two full CRLs */
+
+X509_CRL *X509_CRL_diff(X509_CRL *base, X509_CRL *newer,
+                        EVP_PKEY *skey, const EVP_MD *md, unsigned int flags)
+{
+    X509_CRL *crl = NULL;
+    int i;
+    size_t j;
+    STACK_OF(X509_REVOKED) *revs = NULL;
+    /* CRLs can't be delta already */
+    if (base->base_crl_number || newer->base_crl_number) {
+        OPENSSL_PUT_ERROR(X509, X509_R_CRL_ALREADY_DELTA);
+        return NULL;
+    }
+    /* Base and new CRL must have a CRL number */
+    if (!base->crl_number || !newer->crl_number) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NO_CRL_NUMBER);
+        return NULL;
+    }
+    /* Issuer names must match */
+    if (X509_NAME_cmp(X509_CRL_get_issuer(base), X509_CRL_get_issuer(newer))) {
+        OPENSSL_PUT_ERROR(X509, X509_R_ISSUER_MISMATCH);
+        return NULL;
+    }
+    /* AKID and IDP must match */
+    if (!crl_extension_match(base, newer, NID_authority_key_identifier)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_AKID_MISMATCH);
+        return NULL;
+    }
+    if (!crl_extension_match(base, newer, NID_issuing_distribution_point)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_IDP_MISMATCH);
+        return NULL;
+    }
+    /* Newer CRL number must exceed full CRL number */
+    if (ASN1_INTEGER_cmp(newer->crl_number, base->crl_number) <= 0) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NEWER_CRL_NOT_NEWER);
+        return NULL;
+    }
+    /* CRLs must verify */
+    if (skey && (X509_CRL_verify(base, skey) <= 0 ||
+                 X509_CRL_verify(newer, skey) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_CRL_VERIFY_FAILURE);
+        return NULL;
+    }
+    /* Create new CRL */
+    crl = X509_CRL_new();
+    if (!crl || !X509_CRL_set_version(crl, 1))
+        goto memerr;
+    /* Set issuer name */
+    if (!X509_CRL_set_issuer_name(crl, X509_CRL_get_issuer(newer)))
+        goto memerr;
+
+    if (!X509_CRL_set_lastUpdate(crl, X509_CRL_get_lastUpdate(newer)))
+        goto memerr;
+    if (!X509_CRL_set_nextUpdate(crl, X509_CRL_get_nextUpdate(newer)))
+        goto memerr;
+
+    /* Set base CRL number: must be critical */
+
+    if (!X509_CRL_add1_ext_i2d(crl, NID_delta_crl, base->crl_number, 1, 0))
+        goto memerr;
+
+    /*
+     * Copy extensions across from newest CRL to delta: this will set CRL
+     * number to correct value too.
+     */
+
+    for (i = 0; i < X509_CRL_get_ext_count(newer); i++) {
+        X509_EXTENSION *ext;
+        ext = X509_CRL_get_ext(newer, i);
+        if (!X509_CRL_add_ext(crl, ext, -1))
+            goto memerr;
+    }
+
+    /* Go through revoked entries, copying as needed */
+
+    revs = X509_CRL_get_REVOKED(newer);
+
+    for (j = 0; j < sk_X509_REVOKED_num(revs); j++) {
+        X509_REVOKED *rvn, *rvtmp;
+        rvn = sk_X509_REVOKED_value(revs, j);
+        /*
+         * Add only if not also in base. TODO: need something cleverer here
+         * for some more complex CRLs covering multiple CAs.
+         */
+        if (!X509_CRL_get0_by_serial(base, &rvtmp, rvn->serialNumber)) {
+            rvtmp = X509_REVOKED_dup(rvn);
+            if (!rvtmp)
+                goto memerr;
+            if (!X509_CRL_add0_revoked(crl, rvtmp)) {
+                X509_REVOKED_free(rvtmp);
+                goto memerr;
+            }
+        }
+    }
+    /* TODO: optionally prune deleted entries */
+
+    if (skey && md && !X509_CRL_sign(crl, skey, md))
+        goto memerr;
+
+    return crl;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    if (crl)
+        X509_CRL_free(crl);
+    return NULL;
+}
+
+int X509_STORE_CTX_get_ex_new_index(long argl, void *argp,
+                                    CRYPTO_EX_unused * unused,
+                                    CRYPTO_EX_dup *dup_unused,
+                                    CRYPTO_EX_free *free_func)
+{
+    /*
+     * This function is (usually) called only once, by
+     * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c).
+     */
+    int index;
+    if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                                 free_func)) {
+        return -1;
+    }
+    return index;
+}
+
+int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
+{
+    return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
+}
+
+void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
+{
+    return CRYPTO_get_ex_data(&ctx->ex_data, idx);
+}
+
+int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
+{
+    return ctx->error;
+}
+
+void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
+{
+    ctx->error = err;
+}
+
+int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
+{
+    return ctx->error_depth;
+}
+
+X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
+{
+    return ctx->current_cert;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
+{
+    return ctx->chain;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
+{
+    if (!ctx->chain)
+        return NULL;
+    return X509_chain_up_ref(ctx->chain);
+}
+
+X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx)
+{
+    return ctx->current_issuer;
+}
+
+X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx)
+{
+    return ctx->current_crl;
+}
+
+X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx)
+{
+    return ctx->parent;
+}
+
+void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
+{
+    ctx->cert = x;
+}
+
+void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+{
+    ctx->untrusted = sk;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get0_untrusted(X509_STORE_CTX *ctx)
+{
+    return ctx->untrusted;
+}
+
+void X509_STORE_CTX_set0_crls(X509_STORE_CTX *ctx, STACK_OF(X509_CRL) *sk)
+{
+    ctx->crls = sk;
+}
+
+int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
+{
+    return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
+}
+
+int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
+{
+    return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
+}
+
+/*
+ * This function is used to set the X509_STORE_CTX purpose and trust values.
+ * This is intended to be used when another structure has its own trust and
+ * purpose values which (if set) will be inherited by the ctx. If they aren't
+ * set then we will usually have a default purpose in mind which should then
+ * be used to set the trust value. An example of this is SSL use: an SSL
+ * structure will have its own purpose and trust settings which the
+ * application can set: if they aren't set then we use the default of SSL
+ * client/server.
+ */
+
+int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+                                   int purpose, int trust)
+{
+    int idx;
+    /* If purpose not set use default */
+    if (!purpose)
+        purpose = def_purpose;
+    /* If we have a purpose then check it is valid */
+    if (purpose) {
+        X509_PURPOSE *ptmp;
+        idx = X509_PURPOSE_get_by_id(purpose);
+        if (idx == -1) {
+            OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_PURPOSE_ID);
+            return 0;
+        }
+        ptmp = X509_PURPOSE_get0(idx);
+        if (ptmp->trust == X509_TRUST_DEFAULT) {
+            idx = X509_PURPOSE_get_by_id(def_purpose);
+            if (idx == -1) {
+                OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_PURPOSE_ID);
+                return 0;
+            }
+            ptmp = X509_PURPOSE_get0(idx);
+        }
+        /* If trust not set then get from purpose default */
+        if (!trust)
+            trust = ptmp->trust;
+    }
+    if (trust) {
+        idx = X509_TRUST_get_by_id(trust);
+        if (idx == -1) {
+            OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_TRUST_ID);
+            return 0;
+        }
+    }
+
+    if (purpose && !ctx->param->purpose)
+        ctx->param->purpose = purpose;
+    if (trust && !ctx->param->trust)
+        ctx->param->trust = trust;
+    return 1;
+}
+
+X509_STORE_CTX *X509_STORE_CTX_new(void)
+{
+    X509_STORE_CTX *ctx;
+    ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
+    if (!ctx) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    X509_STORE_CTX_zero(ctx);
+    return ctx;
+}
+
+void X509_STORE_CTX_zero(X509_STORE_CTX *ctx)
+{
+    OPENSSL_memset(ctx, 0, sizeof(X509_STORE_CTX));
+}
+
+void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
+{
+    if (ctx == NULL) {
+        return;
+    }
+    X509_STORE_CTX_cleanup(ctx);
+    OPENSSL_free(ctx);
+}
+
+int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
+                        STACK_OF(X509) *chain)
+{
+    int ret = 1;
+
+    X509_STORE_CTX_zero(ctx);
+    ctx->ctx = store;
+    ctx->cert = x509;
+    ctx->untrusted = chain;
+
+    CRYPTO_new_ex_data(&ctx->ex_data);
+
+    ctx->param = X509_VERIFY_PARAM_new();
+    if (!ctx->param)
+        goto err;
+
+    /*
+     * Inherit callbacks and flags from X509_STORE if not set use defaults.
+     */
+
+    if (store)
+        ret = X509_VERIFY_PARAM_inherit(ctx->param, store->param);
+    else
+        ctx->param->inh_flags |= X509_VP_FLAG_DEFAULT | X509_VP_FLAG_ONCE;
+
+    if (store) {
+        ctx->verify_cb = store->verify_cb;
+        ctx->cleanup = store->cleanup;
+    } else
+        ctx->cleanup = 0;
+
+    if (ret)
+        ret = X509_VERIFY_PARAM_inherit(ctx->param,
+                                        X509_VERIFY_PARAM_lookup("default"));
+
+    if (ret == 0)
+        goto err;
+
+    if (store && store->check_issued)
+        ctx->check_issued = store->check_issued;
+    else
+        ctx->check_issued = check_issued;
+
+    if (store && store->get_issuer)
+        ctx->get_issuer = store->get_issuer;
+    else
+        ctx->get_issuer = X509_STORE_CTX_get1_issuer;
+
+    if (store && store->verify_cb)
+        ctx->verify_cb = store->verify_cb;
+    else
+        ctx->verify_cb = null_callback;
+
+    if (store && store->verify)
+        ctx->verify = store->verify;
+    else
+        ctx->verify = internal_verify;
+
+    if (store && store->check_revocation)
+        ctx->check_revocation = store->check_revocation;
+    else
+        ctx->check_revocation = check_revocation;
+
+    if (store && store->get_crl)
+        ctx->get_crl = store->get_crl;
+    else
+        ctx->get_crl = NULL;
+
+    if (store && store->check_crl)
+        ctx->check_crl = store->check_crl;
+    else
+        ctx->check_crl = check_crl;
+
+    if (store && store->cert_crl)
+        ctx->cert_crl = store->cert_crl;
+    else
+        ctx->cert_crl = cert_crl;
+
+    if (store && store->lookup_certs)
+        ctx->lookup_certs = store->lookup_certs;
+    else
+        ctx->lookup_certs = X509_STORE_get1_certs;
+
+    if (store && store->lookup_crls)
+        ctx->lookup_crls = store->lookup_crls;
+    else
+        ctx->lookup_crls = X509_STORE_get1_crls;
+
+    ctx->check_policy = check_policy;
+
+    return 1;
+
+ err:
+    CRYPTO_free_ex_data(&g_ex_data_class, ctx, &ctx->ex_data);
+    if (ctx->param != NULL) {
+        X509_VERIFY_PARAM_free(ctx->param);
+    }
+
+    OPENSSL_memset(ctx, 0, sizeof(X509_STORE_CTX));
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    return 0;
+}
+
+/*
+ * Set alternative lookup method: just a STACK of trusted certificates. This
+ * avoids X509_STORE nastiness where it isn't needed.
+ */
+
+void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+{
+    ctx->other_ctx = sk;
+    ctx->get_issuer = get_issuer_sk;
+}
+
+void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
+{
+    /* We need to be idempotent because, unfortunately, |X509_STORE_CTX_free|
+     * also calls this function. */
+    if (ctx->cleanup != NULL) {
+        ctx->cleanup(ctx);
+        ctx->cleanup = NULL;
+    }
+    if (ctx->param != NULL) {
+        if (ctx->parent == NULL)
+            X509_VERIFY_PARAM_free(ctx->param);
+        ctx->param = NULL;
+    }
+    if (ctx->tree != NULL) {
+        X509_policy_tree_free(ctx->tree);
+        ctx->tree = NULL;
+    }
+    if (ctx->chain != NULL) {
+        sk_X509_pop_free(ctx->chain, X509_free);
+        ctx->chain = NULL;
+    }
+    CRYPTO_free_ex_data(&g_ex_data_class, ctx, &(ctx->ex_data));
+    OPENSSL_memset(&ctx->ex_data, 0, sizeof(CRYPTO_EX_DATA));
+}
+
+void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth)
+{
+    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+}
+
+void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags)
+{
+    X509_VERIFY_PARAM_set_flags(ctx->param, flags);
+}
+
+void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
+                             time_t t)
+{
+    X509_VERIFY_PARAM_set_time(ctx->param, t);
+}
+
+X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx)
+{
+    return ctx->cert;
+}
+
+void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+                                  int (*verify_cb) (int, X509_STORE_CTX *))
+{
+    ctx->verify_cb = verify_cb;
+}
+
+X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx)
+{
+    return ctx->tree;
+}
+
+int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx)
+{
+    return ctx->explicit_policy;
+}
+
+int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name)
+{
+    const X509_VERIFY_PARAM *param;
+    param = X509_VERIFY_PARAM_lookup(name);
+    if (!param)
+        return 0;
+    return X509_VERIFY_PARAM_inherit(ctx->param, param);
+}
+
+X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx)
+{
+    return ctx->param;
+}
+
+void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param)
+{
+    if (ctx->param)
+        X509_VERIFY_PARAM_free(ctx->param);
+    ctx->param = param;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509)
+
+IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c.grpc_back
new file mode 100644
index 0000000..23bbeb5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vfy.c.grpc_back	
@@ -0,0 +1,2482 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "vpm_int.h"
+#include "../internal.h"
+#include "../x509v3/internal.h"
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+/* CRL score values */
+
+/* No unhandled critical extensions */
+
+#define CRL_SCORE_NOCRITICAL    0x100
+
+/* certificate is within CRL scope */
+
+#define CRL_SCORE_SCOPE         0x080
+
+/* CRL times valid */
+
+#define CRL_SCORE_TIME          0x040
+
+/* Issuer name matches certificate */
+
+#define CRL_SCORE_ISSUER_NAME   0x020
+
+/* If this score or above CRL is probably valid */
+
+#define CRL_SCORE_VALID (CRL_SCORE_NOCRITICAL|CRL_SCORE_TIME|CRL_SCORE_SCOPE)
+
+/* CRL issuer is certificate issuer */
+
+#define CRL_SCORE_ISSUER_CERT   0x018
+
+/* CRL issuer is on certificate path */
+
+#define CRL_SCORE_SAME_PATH     0x008
+
+/* CRL issuer matches CRL AKID */
+
+#define CRL_SCORE_AKID          0x004
+
+/* Have a delta CRL with valid times */
+
+#define CRL_SCORE_TIME_DELTA    0x002
+
+static int null_callback(int ok, X509_STORE_CTX *e);
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x);
+static int check_chain_extensions(X509_STORE_CTX *ctx);
+static int check_name_constraints(X509_STORE_CTX *ctx);
+static int check_id(X509_STORE_CTX *ctx);
+static int check_trust(X509_STORE_CTX *ctx);
+static int check_revocation(X509_STORE_CTX *ctx);
+static int check_cert(X509_STORE_CTX *ctx);
+static int check_policy(X509_STORE_CTX *ctx);
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+                         unsigned int *preasons, X509_CRL *crl, X509 *x);
+static int get_crl_delta(X509_STORE_CTX *ctx,
+                         X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x);
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl,
+                         int *pcrl_score, X509_CRL *base,
+                         STACK_OF(X509_CRL) *crls);
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer,
+                           int *pcrl_score);
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+                           unsigned int *preasons);
+static int check_crl_path(X509_STORE_CTX *ctx, X509 *x);
+static int check_crl_chain(X509_STORE_CTX *ctx,
+                           STACK_OF(X509) *cert_path,
+                           STACK_OF(X509) *crl_path);
+
+static int internal_verify(X509_STORE_CTX *ctx);
+
+static int null_callback(int ok, X509_STORE_CTX *e)
+{
+    return ok;
+}
+
+/* Return 1 is a certificate is self signed */
+static int cert_self_signed(X509 *x)
+{
+    X509_check_purpose(x, -1, 0);
+    if (x->ex_flags & EXFLAG_SS)
+        return 1;
+    else
+        return 0;
+}
+
+/* Given a certificate try and find an exact match in the store */
+
+static X509 *lookup_cert_match(X509_STORE_CTX *ctx, X509 *x)
+{
+    STACK_OF(X509) *certs;
+    X509 *xtmp = NULL;
+    size_t i;
+    /* Lookup all certs with matching subject name */
+    certs = ctx->lookup_certs(ctx, X509_get_subject_name(x));
+    if (certs == NULL)
+        return NULL;
+    /* Look for exact match */
+    for (i = 0; i < sk_X509_num(certs); i++) {
+        xtmp = sk_X509_value(certs, i);
+        if (!X509_cmp(xtmp, x))
+            break;
+    }
+    if (i < sk_X509_num(certs))
+        X509_up_ref(xtmp);
+    else
+        xtmp = NULL;
+    sk_X509_pop_free(certs, X509_free);
+    return xtmp;
+}
+
+int X509_verify_cert(X509_STORE_CTX *ctx)
+{
+    X509 *x, *xtmp, *xtmp2, *chain_ss = NULL;
+    int bad_chain = 0;
+    X509_VERIFY_PARAM *param = ctx->param;
+    int depth, i, ok = 0;
+    int num, j, retry, trust;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    STACK_OF(X509) *sktmp = NULL;
+    if (ctx->cert == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
+        ctx->error = X509_V_ERR_INVALID_CALL;
+        return -1;
+    }
+    if (ctx->chain != NULL) {
+        /*
+         * This X509_STORE_CTX has already been used to verify a cert. We
+         * cannot do another one.
+         */
+        OPENSSL_PUT_ERROR(X509, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+        ctx->error = X509_V_ERR_INVALID_CALL;
+        return -1;
+    }
+
+    cb = ctx->verify_cb;
+
+    /*
+     * first we make sure the chain we are going to build is present and that
+     * the first entry is in place
+     */
+    ctx->chain = sk_X509_new_null();
+    if (ctx->chain == NULL || !sk_X509_push(ctx->chain, ctx->cert)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        goto end;
+    }
+    X509_up_ref(ctx->cert);
+    ctx->last_untrusted = 1;
+
+    /* We use a temporary STACK so we can chop and hack at it.
+     * sktmp = ctx->untrusted ++ ctx->ctx->additional_untrusted */
+    if (ctx->untrusted != NULL
+        && (sktmp = sk_X509_dup(ctx->untrusted)) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        goto end;
+    }
+
+    if (ctx->ctx->additional_untrusted != NULL) {
+        if (sktmp == NULL) {
+            sktmp = sk_X509_new_null();
+            if (sktmp == NULL) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                goto end;
+            }
+        }
+
+        for (size_t k = 0; k < sk_X509_num(ctx->ctx->additional_untrusted);
+             k++) {
+            if (!sk_X509_push(sktmp,
+                              sk_X509_value(ctx->ctx->additional_untrusted,
+                              k))) {
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                goto end;
+            }
+        }
+    }
+
+    num = sk_X509_num(ctx->chain);
+    x = sk_X509_value(ctx->chain, num - 1);
+    depth = param->depth;
+
+    for (;;) {
+        /* If we have enough, we break */
+        if (depth < num)
+            break;              /* FIXME: If this happens, we should take
+                                 * note of it and, if appropriate, use the
+                                 * X509_V_ERR_CERT_CHAIN_TOO_LONG error code
+                                 * later. */
+
+        /* If we are self signed, we break */
+        if (cert_self_signed(x))
+            break;
+        /*
+         * If asked see if we can find issuer in trusted store first
+         */
+        if (ctx->param->flags & X509_V_FLAG_TRUSTED_FIRST) {
+            ok = ctx->get_issuer(&xtmp, ctx, x);
+            if (ok < 0) {
+                ctx->error = X509_V_ERR_STORE_LOOKUP;
+                goto end;
+            }
+            /*
+             * If successful for now free up cert so it will be picked up
+             * again later.
+             */
+            if (ok > 0) {
+                X509_free(xtmp);
+                break;
+            }
+        }
+
+        /* If we were passed a cert chain, use it first */
+        if (sktmp != NULL) {
+            xtmp = find_issuer(ctx, sktmp, x);
+            if (xtmp != NULL) {
+                if (!sk_X509_push(ctx->chain, xtmp)) {
+                    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                    ctx->error = X509_V_ERR_OUT_OF_MEM;
+                    ok = 0;
+                    goto end;
+                }
+                X509_up_ref(xtmp);
+                (void)sk_X509_delete_ptr(sktmp, xtmp);
+                ctx->last_untrusted++;
+                x = xtmp;
+                num++;
+                /*
+                 * reparse the full chain for the next one
+                 */
+                continue;
+            }
+        }
+        break;
+    }
+
+    /* Remember how many untrusted certs we have */
+    j = num;
+    /*
+     * at this point, chain should contain a list of untrusted certificates.
+     * We now need to add at least one trusted one, if possible, otherwise we
+     * complain.
+     */
+
+    do {
+        /*
+         * Examine last certificate in chain and see if it is self signed.
+         */
+        i = sk_X509_num(ctx->chain);
+        x = sk_X509_value(ctx->chain, i - 1);
+        if (cert_self_signed(x)) {
+            /* we have a self signed certificate */
+            if (sk_X509_num(ctx->chain) == 1) {
+                /*
+                 * We have a single self signed certificate: see if we can
+                 * find it in the store. We must have an exact match to avoid
+                 * possible impersonation.
+                 */
+                ok = ctx->get_issuer(&xtmp, ctx, x);
+                if ((ok <= 0) || X509_cmp(x, xtmp)) {
+                    ctx->error = X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
+                    ctx->current_cert = x;
+                    ctx->error_depth = i - 1;
+                    if (ok == 1)
+                        X509_free(xtmp);
+                    bad_chain = 1;
+                    ok = cb(0, ctx);
+                    if (!ok)
+                        goto end;
+                } else {
+                    /*
+                     * We have a match: replace certificate with store
+                     * version so we get any trust settings.
+                     */
+                    X509_free(x);
+                    x = xtmp;
+                    (void)sk_X509_set(ctx->chain, i - 1, x);
+                    ctx->last_untrusted = 0;
+                }
+            } else {
+                /*
+                 * extract and save self signed certificate for later use
+                 */
+                chain_ss = sk_X509_pop(ctx->chain);
+                ctx->last_untrusted--;
+                num--;
+                j--;
+                x = sk_X509_value(ctx->chain, num - 1);
+            }
+        }
+        /* We now lookup certs from the certificate store */
+        for (;;) {
+            /* If we have enough, we break */
+            if (depth < num)
+                break;
+            /* If we are self signed, we break */
+            if (cert_self_signed(x))
+                break;
+            ok = ctx->get_issuer(&xtmp, ctx, x);
+
+            if (ok < 0) {
+                ctx->error = X509_V_ERR_STORE_LOOKUP;
+                goto end;
+            }
+            if (ok == 0)
+                break;
+            x = xtmp;
+            if (!sk_X509_push(ctx->chain, x)) {
+                X509_free(xtmp);
+                OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+                ctx->error = X509_V_ERR_OUT_OF_MEM;
+                ok = 0;
+                goto end;
+            }
+            num++;
+        }
+
+        /* we now have our chain, lets check it... */
+        trust = check_trust(ctx);
+
+        /* If explicitly rejected error */
+        if (trust == X509_TRUST_REJECTED) {
+            ok = 0;
+            goto end;
+        }
+        /*
+         * If it's not explicitly trusted then check if there is an alternative
+         * chain that could be used. We only do this if we haven't already
+         * checked via TRUSTED_FIRST and the user hasn't switched off alternate
+         * chain checking
+         */
+        retry = 0;
+        if (trust != X509_TRUST_TRUSTED
+            && !(ctx->param->flags & X509_V_FLAG_TRUSTED_FIRST)
+            && !(ctx->param->flags & X509_V_FLAG_NO_ALT_CHAINS)) {
+            while (j-- > 1) {
+                xtmp2 = sk_X509_value(ctx->chain, j - 1);
+                ok = ctx->get_issuer(&xtmp, ctx, xtmp2);
+                if (ok < 0)
+                    goto end;
+                /* Check if we found an alternate chain */
+                if (ok > 0) {
+                    /*
+                     * Free up the found cert we'll add it again later
+                     */
+                    X509_free(xtmp);
+
+                    /*
+                     * Dump all the certs above this point - we've found an
+                     * alternate chain
+                     */
+                    while (num > j) {
+                        xtmp = sk_X509_pop(ctx->chain);
+                        X509_free(xtmp);
+                        num--;
+                    }
+                    ctx->last_untrusted = sk_X509_num(ctx->chain);
+                    retry = 1;
+                    break;
+                }
+            }
+        }
+    } while (retry);
+
+    /*
+     * If not explicitly trusted then indicate error unless it's a single
+     * self signed certificate in which case we've indicated an error already
+     * and set bad_chain == 1
+     */
+    if (trust != X509_TRUST_TRUSTED && !bad_chain) {
+        if ((chain_ss == NULL) || !ctx->check_issued(ctx, x, chain_ss)) {
+            if (ctx->last_untrusted >= num)
+                ctx->error = X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
+            else
+                ctx->error = X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
+            ctx->current_cert = x;
+        } else {
+
+            sk_X509_push(ctx->chain, chain_ss);
+            num++;
+            ctx->last_untrusted = num;
+            ctx->current_cert = chain_ss;
+            ctx->error = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
+            chain_ss = NULL;
+        }
+
+        ctx->error_depth = num - 1;
+        bad_chain = 1;
+        ok = cb(0, ctx);
+        if (!ok)
+            goto end;
+    }
+
+    /* We have the chain complete: now we need to check its purpose */
+    ok = check_chain_extensions(ctx);
+
+    if (!ok)
+        goto end;
+
+    ok = check_id(ctx);
+
+    if (!ok)
+        goto end;
+
+    /*
+     * Check revocation status: we do this after copying parameters because
+     * they may be needed for CRL signature verification.
+     */
+
+    ok = ctx->check_revocation(ctx);
+    if (!ok)
+        goto end;
+
+    int err = X509_chain_check_suiteb(&ctx->error_depth, NULL, ctx->chain,
+                                      ctx->param->flags);
+    if (err != X509_V_OK) {
+        ctx->error = err;
+        ctx->current_cert = sk_X509_value(ctx->chain, ctx->error_depth);
+        ok = cb(0, ctx);
+        if (!ok)
+            goto end;
+    }
+
+    /* At this point, we have a chain and need to verify it */
+    if (ctx->verify != NULL)
+        ok = ctx->verify(ctx);
+    else
+        ok = internal_verify(ctx);
+    if (!ok)
+        goto end;
+
+    /* Check name constraints */
+
+    ok = check_name_constraints(ctx);
+    if (!ok)
+        goto end;
+
+    /* If we get this far evaluate policies */
+    if (!bad_chain && (ctx->param->flags & X509_V_FLAG_POLICY_CHECK))
+        ok = ctx->check_policy(ctx);
+
+ end:
+    if (sktmp != NULL)
+        sk_X509_free(sktmp);
+    if (chain_ss != NULL)
+        X509_free(chain_ss);
+
+    /* Safety net, error returns must set ctx->error */
+    if (ok <= 0 && ctx->error == X509_V_OK)
+        ctx->error = X509_V_ERR_UNSPECIFIED;
+    return ok;
+}
+
+/*
+ * Given a STACK_OF(X509) find the issuer of cert (if any)
+ */
+
+static X509 *find_issuer(X509_STORE_CTX *ctx, STACK_OF(X509) *sk, X509 *x)
+{
+    size_t i;
+    X509 *issuer;
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        issuer = sk_X509_value(sk, i);
+        if (ctx->check_issued(ctx, x, issuer))
+            return issuer;
+    }
+    return NULL;
+}
+
+/* Given a possible certificate and issuer check them */
+
+static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
+{
+    int ret;
+    ret = X509_check_issued(issuer, x);
+    if (ret == X509_V_OK)
+        return 1;
+    /* If we haven't asked for issuer errors don't set ctx */
+    if (!(ctx->param->flags & X509_V_FLAG_CB_ISSUER_CHECK))
+        return 0;
+
+    ctx->error = ret;
+    ctx->current_cert = x;
+    ctx->current_issuer = issuer;
+    return ctx->verify_cb(0, ctx);
+}
+
+/* Alternative lookup method: look from a STACK stored in other_ctx */
+
+static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
+{
+    *issuer = find_issuer(ctx, ctx->other_ctx, x);
+    if (*issuer) {
+        X509_up_ref(*issuer);
+        return 1;
+    } else
+        return 0;
+}
+
+/*
+ * Check a certificate chains extensions for consistency with the supplied
+ * purpose
+ */
+
+static int check_chain_extensions(X509_STORE_CTX *ctx)
+{
+    int i, ok = 0, plen = 0;
+    X509 *x;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    int proxy_path_length = 0;
+    int purpose;
+    int allow_proxy_certs;
+    cb = ctx->verify_cb;
+
+    enum {
+        // ca_or_leaf allows either type of certificate so that direct use of
+        // self-signed certificates works.
+        ca_or_leaf,
+        must_be_ca,
+        must_not_be_ca,
+    } ca_requirement;
+
+    /* CRL path validation */
+    if (ctx->parent) {
+        allow_proxy_certs = 0;
+        purpose = X509_PURPOSE_CRL_SIGN;
+    } else {
+        allow_proxy_certs =
+            ! !(ctx->param->flags & X509_V_FLAG_ALLOW_PROXY_CERTS);
+        purpose = ctx->param->purpose;
+    }
+
+    ca_requirement = ca_or_leaf;
+
+    /* Check all untrusted certificates */
+    for (i = 0; i < ctx->last_untrusted; i++) {
+        int ret;
+        x = sk_X509_value(ctx->chain, i);
+        if (!(ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+            && (x->ex_flags & EXFLAG_CRITICAL)) {
+            ctx->error = X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        if (!allow_proxy_certs && (x->ex_flags & EXFLAG_PROXY)) {
+            ctx->error = X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+
+        switch (ca_requirement) {
+        case ca_or_leaf:
+            ret = 1;
+            break;
+        case must_not_be_ca:
+            if (X509_check_ca(x)) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_NON_CA;
+            } else
+                ret = 1;
+            break;
+        case must_be_ca:
+            if (!X509_check_ca(x)) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_CA;
+            } else
+                ret = 1;
+            break;
+        default:
+            // impossible.
+            ret = 0;
+        }
+
+        if (ret == 0) {
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        if (ctx->param->purpose > 0) {
+            ret = X509_check_purpose(x, purpose, ca_requirement == must_be_ca);
+            if (ret != 1) {
+                ret = 0;
+                ctx->error = X509_V_ERR_INVALID_PURPOSE;
+                ctx->error_depth = i;
+                ctx->current_cert = x;
+                ok = cb(0, ctx);
+                if (!ok)
+                    goto end;
+            }
+        }
+        /* Check pathlen if not self issued */
+        if ((i > 1) && !(x->ex_flags & EXFLAG_SI)
+            && (x->ex_pathlen != -1)
+            && (plen > (x->ex_pathlen + proxy_path_length + 1))) {
+            ctx->error = X509_V_ERR_PATH_LENGTH_EXCEEDED;
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ok = cb(0, ctx);
+            if (!ok)
+                goto end;
+        }
+        /* Increment path length if not self issued */
+        if (!(x->ex_flags & EXFLAG_SI))
+            plen++;
+        /*
+         * If this certificate is a proxy certificate, the next certificate
+         * must be another proxy certificate or a EE certificate.  If not,
+         * the next certificate must be a CA certificate.
+         */
+        if (x->ex_flags & EXFLAG_PROXY) {
+            if (x->ex_pcpathlen != -1 && i > x->ex_pcpathlen) {
+                ctx->error = X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED;
+                ctx->error_depth = i;
+                ctx->current_cert = x;
+                ok = cb(0, ctx);
+                if (!ok)
+                    goto end;
+            }
+            proxy_path_length++;
+            ca_requirement = must_not_be_ca;
+        } else {
+            ca_requirement = must_be_ca;
+        }
+    }
+    ok = 1;
+ end:
+    return ok;
+}
+
+static int reject_dns_name_in_common_name(X509 *x509)
+{
+    X509_NAME *name = X509_get_subject_name(x509);
+    int i = -1;
+    for (;;) {
+        i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
+        if (i == -1) {
+            return X509_V_OK;
+        }
+
+        X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, i);
+        ASN1_STRING *common_name = X509_NAME_ENTRY_get_data(entry);
+        unsigned char *idval;
+        int idlen = ASN1_STRING_to_UTF8(&idval, common_name);
+        if (idlen < 0) {
+            return X509_V_ERR_OUT_OF_MEM;
+        }
+        /* Only process attributes that look like host names. Note it is
+         * important that this check be mirrored in |X509_check_host|. */
+        int looks_like_dns = x509v3_looks_like_dns_name(idval, (size_t)idlen);
+        OPENSSL_free(idval);
+        if (looks_like_dns) {
+            return X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS;
+        }
+    }
+}
+
+static int check_name_constraints(X509_STORE_CTX *ctx)
+{
+    int i, j, rv;
+    int has_name_constraints = 0;
+    /* Check name constraints for all certificates */
+    for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--) {
+        X509 *x = sk_X509_value(ctx->chain, i);
+        /* Ignore self issued certs unless last in chain */
+        if (i && (x->ex_flags & EXFLAG_SI))
+            continue;
+        /*
+         * Check against constraints for all certificates higher in chain
+         * including trust anchor. Trust anchor not strictly speaking needed
+         * but if it includes constraints it is to be assumed it expects them
+         * to be obeyed.
+         */
+        for (j = sk_X509_num(ctx->chain) - 1; j > i; j--) {
+            NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
+            if (nc) {
+                has_name_constraints = 1;
+                rv = NAME_CONSTRAINTS_check(x, nc);
+                switch (rv) {
+                case X509_V_OK:
+                    continue;
+                case X509_V_ERR_OUT_OF_MEM:
+                    ctx->error = rv;
+                    return 0;
+                default:
+                    ctx->error = rv;
+                    ctx->error_depth = i;
+                    ctx->current_cert = x;
+                    if (!ctx->verify_cb(0, ctx))
+                        return 0;
+                    break;
+                }
+            }
+        }
+    }
+
+    /* Name constraints do not match against the common name, but
+     * |X509_check_host| still implements the legacy behavior where, on
+     * certificates lacking a SAN list, DNS-like names in the common name are
+     * checked instead.
+     *
+     * While we could apply the name constraints to the common name, name
+     * constraints are rare enough that can hold such certificates to a higher
+     * standard. Note this does not make "DNS-like" heuristic failures any
+     * worse. A decorative common-name misidentified as a DNS name would fail
+     * the name constraint anyway. */
+    X509 *leaf = sk_X509_value(ctx->chain, 0);
+    if (has_name_constraints && leaf->altname == NULL) {
+        rv = reject_dns_name_in_common_name(leaf);
+        switch (rv) {
+        case X509_V_OK:
+            break;
+        case X509_V_ERR_OUT_OF_MEM:
+            ctx->error = rv;
+            return 0;
+        default:
+            ctx->error = rv;
+            ctx->error_depth = i;
+            ctx->current_cert = leaf;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+            break;
+        }
+    }
+
+    return 1;
+}
+
+static int check_id_error(X509_STORE_CTX *ctx, int errcode)
+{
+    ctx->error = errcode;
+    ctx->current_cert = ctx->cert;
+    ctx->error_depth = 0;
+    return ctx->verify_cb(0, ctx);
+}
+
+static int check_hosts(X509 *x, X509_VERIFY_PARAM_ID *id)
+{
+    size_t i;
+    size_t n = sk_OPENSSL_STRING_num(id->hosts);
+    char *name;
+
+    if (id->peername != NULL) {
+        OPENSSL_free(id->peername);
+        id->peername = NULL;
+    }
+    for (i = 0; i < n; ++i) {
+        name = sk_OPENSSL_STRING_value(id->hosts, i);
+        if (X509_check_host(x, name, strlen(name), id->hostflags,
+                            &id->peername) > 0)
+            return 1;
+    }
+    return n == 0;
+}
+
+static int check_id(X509_STORE_CTX *ctx)
+{
+    X509_VERIFY_PARAM *vpm = ctx->param;
+    X509_VERIFY_PARAM_ID *id = vpm->id;
+    X509 *x = ctx->cert;
+    if (id->poison) {
+        if (!check_id_error(ctx, X509_V_ERR_INVALID_CALL))
+            return 0;
+    }
+    if (id->hosts && check_hosts(x, id) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_HOSTNAME_MISMATCH))
+            return 0;
+    }
+    if (id->email && X509_check_email(x, id->email, id->emaillen, 0) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_EMAIL_MISMATCH))
+            return 0;
+    }
+    if (id->ip && X509_check_ip(x, id->ip, id->iplen, 0) <= 0) {
+        if (!check_id_error(ctx, X509_V_ERR_IP_ADDRESS_MISMATCH))
+            return 0;
+    }
+    return 1;
+}
+
+static int check_trust(X509_STORE_CTX *ctx)
+{
+    size_t i;
+    int ok;
+    X509 *x = NULL;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+    cb = ctx->verify_cb;
+    /* Check all trusted certificates in chain */
+    for (i = ctx->last_untrusted; i < sk_X509_num(ctx->chain); i++) {
+        x = sk_X509_value(ctx->chain, i);
+        ok = X509_check_trust(x, ctx->param->trust, 0);
+        /* If explicitly trusted return trusted */
+        if (ok == X509_TRUST_TRUSTED)
+            return X509_TRUST_TRUSTED;
+        /*
+         * If explicitly rejected notify callback and reject if not
+         * overridden.
+         */
+        if (ok == X509_TRUST_REJECTED) {
+            ctx->error_depth = i;
+            ctx->current_cert = x;
+            ctx->error = X509_V_ERR_CERT_REJECTED;
+            ok = cb(0, ctx);
+            if (!ok)
+                return X509_TRUST_REJECTED;
+        }
+    }
+    /*
+     * If we accept partial chains and have at least one trusted certificate
+     * return success.
+     */
+    if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN) {
+        X509 *mx;
+        if (ctx->last_untrusted < (int)sk_X509_num(ctx->chain))
+            return X509_TRUST_TRUSTED;
+        x = sk_X509_value(ctx->chain, 0);
+        mx = lookup_cert_match(ctx, x);
+        if (mx) {
+            (void)sk_X509_set(ctx->chain, 0, mx);
+            X509_free(x);
+            ctx->last_untrusted = 0;
+            return X509_TRUST_TRUSTED;
+        }
+    }
+
+    /*
+     * If no trusted certs in chain at all return untrusted and allow
+     * standard (no issuer cert) etc errors to be indicated.
+     */
+    return X509_TRUST_UNTRUSTED;
+}
+
+static int check_revocation(X509_STORE_CTX *ctx)
+{
+    int i, last, ok;
+    if (!(ctx->param->flags & X509_V_FLAG_CRL_CHECK))
+        return 1;
+    if (ctx->param->flags & X509_V_FLAG_CRL_CHECK_ALL)
+        last = sk_X509_num(ctx->chain) - 1;
+    else {
+        /* If checking CRL paths this isn't the EE certificate */
+        if (ctx->parent)
+            return 1;
+        last = 0;
+    }
+    for (i = 0; i <= last; i++) {
+        ctx->error_depth = i;
+        ok = check_cert(ctx);
+        if (!ok)
+            return ok;
+    }
+    return 1;
+}
+
+static int check_cert(X509_STORE_CTX *ctx)
+{
+    X509_CRL *crl = NULL, *dcrl = NULL;
+    X509 *x;
+    int ok = 0, cnum;
+    unsigned int last_reasons;
+    cnum = ctx->error_depth;
+    x = sk_X509_value(ctx->chain, cnum);
+    ctx->current_cert = x;
+    ctx->current_issuer = NULL;
+    ctx->current_crl_score = 0;
+    ctx->current_reasons = 0;
+    while (ctx->current_reasons != CRLDP_ALL_REASONS) {
+        last_reasons = ctx->current_reasons;
+        /* Try to retrieve relevant CRL */
+        if (ctx->get_crl)
+            ok = ctx->get_crl(ctx, &crl, x);
+        else
+            ok = get_crl_delta(ctx, &crl, &dcrl, x);
+        /*
+         * If error looking up CRL, nothing we can do except notify callback
+         */
+        if (!ok) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
+            ok = ctx->verify_cb(0, ctx);
+            goto err;
+        }
+        ctx->current_crl = crl;
+        ok = ctx->check_crl(ctx, crl);
+        if (!ok)
+            goto err;
+
+        if (dcrl) {
+            ok = ctx->check_crl(ctx, dcrl);
+            if (!ok)
+                goto err;
+            ok = ctx->cert_crl(ctx, dcrl, x);
+            if (!ok)
+                goto err;
+        } else
+            ok = 1;
+
+        /* Don't look in full CRL if delta reason is removefromCRL */
+        if (ok != 2) {
+            ok = ctx->cert_crl(ctx, crl, x);
+            if (!ok)
+                goto err;
+        }
+
+        X509_CRL_free(crl);
+        X509_CRL_free(dcrl);
+        crl = NULL;
+        dcrl = NULL;
+        /*
+         * If reasons not updated we wont get anywhere by another iteration,
+         * so exit loop.
+         */
+        if (last_reasons == ctx->current_reasons) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL;
+            ok = ctx->verify_cb(0, ctx);
+            goto err;
+        }
+    }
+ err:
+    X509_CRL_free(crl);
+    X509_CRL_free(dcrl);
+
+    ctx->current_crl = NULL;
+    return ok;
+
+}
+
+/* Check CRL times against values in X509_STORE_CTX */
+
+static int check_crl_time(X509_STORE_CTX *ctx, X509_CRL *crl, int notify)
+{
+    time_t *ptime;
+    int i;
+    if (notify)
+        ctx->current_crl = crl;
+    if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+        ptime = &ctx->param->check_time;
+    else
+        ptime = NULL;
+
+    i = X509_cmp_time(X509_CRL_get_lastUpdate(crl), ptime);
+    if (i == 0) {
+        if (!notify)
+            return 0;
+        ctx->error = X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i > 0) {
+        if (!notify)
+            return 0;
+        ctx->error = X509_V_ERR_CRL_NOT_YET_VALID;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (X509_CRL_get_nextUpdate(crl)) {
+        i = X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
+
+        if (i == 0) {
+            if (!notify)
+                return 0;
+            ctx->error = X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+        /* Ignore expiry of base CRL is delta is valid */
+        if ((i < 0) && !(ctx->current_crl_score & CRL_SCORE_TIME_DELTA)) {
+            if (!notify)
+                return 0;
+            ctx->error = X509_V_ERR_CRL_HAS_EXPIRED;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+    }
+
+    if (notify)
+        ctx->current_crl = NULL;
+
+    return 1;
+}
+
+static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl, X509_CRL **pdcrl,
+                      X509 **pissuer, int *pscore, unsigned int *preasons,
+                      STACK_OF(X509_CRL) *crls)
+{
+    int crl_score, best_score = *pscore;
+    size_t i;
+    unsigned int reasons, best_reasons = 0;
+    X509 *x = ctx->current_cert;
+    X509_CRL *crl, *best_crl = NULL;
+    X509 *crl_issuer = NULL, *best_crl_issuer = NULL;
+
+    for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+        crl = sk_X509_CRL_value(crls, i);
+        reasons = *preasons;
+        crl_score = get_crl_score(ctx, &crl_issuer, &reasons, crl, x);
+        if (crl_score < best_score || crl_score == 0)
+            continue;
+        /* If current CRL is equivalent use it if it is newer */
+        if (crl_score == best_score && best_crl != NULL) {
+            int day, sec;
+            if (ASN1_TIME_diff(&day, &sec, X509_CRL_get_lastUpdate(best_crl),
+                               X509_CRL_get_lastUpdate(crl)) == 0)
+                continue;
+            /*
+             * ASN1_TIME_diff never returns inconsistent signs for |day|
+             * and |sec|.
+             */
+            if (day <= 0 && sec <= 0)
+                continue;
+        }
+        best_crl = crl;
+        best_crl_issuer = crl_issuer;
+        best_score = crl_score;
+        best_reasons = reasons;
+    }
+
+    if (best_crl) {
+        if (*pcrl)
+            X509_CRL_free(*pcrl);
+        *pcrl = best_crl;
+        *pissuer = best_crl_issuer;
+        *pscore = best_score;
+        *preasons = best_reasons;
+        X509_CRL_up_ref(best_crl);
+        if (*pdcrl) {
+            X509_CRL_free(*pdcrl);
+            *pdcrl = NULL;
+        }
+        get_delta_sk(ctx, pdcrl, pscore, best_crl, crls);
+    }
+
+    if (best_score >= CRL_SCORE_VALID)
+        return 1;
+
+    return 0;
+}
+
+/*
+ * Compare two CRL extensions for delta checking purposes. They should be
+ * both present or both absent. If both present all fields must be identical.
+ */
+
+static int crl_extension_match(X509_CRL *a, X509_CRL *b, int nid)
+{
+    ASN1_OCTET_STRING *exta, *extb;
+    int i;
+    i = X509_CRL_get_ext_by_NID(a, nid, -1);
+    if (i >= 0) {
+        /* Can't have multiple occurrences */
+        if (X509_CRL_get_ext_by_NID(a, nid, i) != -1)
+            return 0;
+        exta = X509_EXTENSION_get_data(X509_CRL_get_ext(a, i));
+    } else
+        exta = NULL;
+
+    i = X509_CRL_get_ext_by_NID(b, nid, -1);
+
+    if (i >= 0) {
+
+        if (X509_CRL_get_ext_by_NID(b, nid, i) != -1)
+            return 0;
+        extb = X509_EXTENSION_get_data(X509_CRL_get_ext(b, i));
+    } else
+        extb = NULL;
+
+    if (!exta && !extb)
+        return 1;
+
+    if (!exta || !extb)
+        return 0;
+
+    if (ASN1_OCTET_STRING_cmp(exta, extb))
+        return 0;
+
+    return 1;
+}
+
+/* See if a base and delta are compatible */
+
+static int check_delta_base(X509_CRL *delta, X509_CRL *base)
+{
+    /* Delta CRL must be a delta */
+    if (!delta->base_crl_number)
+        return 0;
+    /* Base must have a CRL number */
+    if (!base->crl_number)
+        return 0;
+    /* Issuer names must match */
+    if (X509_NAME_cmp(X509_CRL_get_issuer(base), X509_CRL_get_issuer(delta)))
+        return 0;
+    /* AKID and IDP must match */
+    if (!crl_extension_match(delta, base, NID_authority_key_identifier))
+        return 0;
+    if (!crl_extension_match(delta, base, NID_issuing_distribution_point))
+        return 0;
+    /* Delta CRL base number must not exceed Full CRL number. */
+    if (ASN1_INTEGER_cmp(delta->base_crl_number, base->crl_number) > 0)
+        return 0;
+    /* Delta CRL number must exceed full CRL number */
+    if (ASN1_INTEGER_cmp(delta->crl_number, base->crl_number) > 0)
+        return 1;
+    return 0;
+}
+
+/*
+ * For a given base CRL find a delta... maybe extend to delta scoring or
+ * retrieve a chain of deltas...
+ */
+
+static void get_delta_sk(X509_STORE_CTX *ctx, X509_CRL **dcrl, int *pscore,
+                         X509_CRL *base, STACK_OF(X509_CRL) *crls)
+{
+    X509_CRL *delta;
+    size_t i;
+    if (!(ctx->param->flags & X509_V_FLAG_USE_DELTAS))
+        return;
+    if (!((ctx->current_cert->ex_flags | base->flags) & EXFLAG_FRESHEST))
+        return;
+    for (i = 0; i < sk_X509_CRL_num(crls); i++) {
+        delta = sk_X509_CRL_value(crls, i);
+        if (check_delta_base(delta, base)) {
+            if (check_crl_time(ctx, delta, 0))
+                *pscore |= CRL_SCORE_TIME_DELTA;
+            X509_CRL_up_ref(delta);
+            *dcrl = delta;
+            return;
+        }
+    }
+    *dcrl = NULL;
+}
+
+/*
+ * For a given CRL return how suitable it is for the supplied certificate
+ * 'x'. The return value is a mask of several criteria. If the issuer is not
+ * the certificate issuer this is returned in *pissuer. The reasons mask is
+ * also used to determine if the CRL is suitable: if no new reasons the CRL
+ * is rejected, otherwise reasons is updated.
+ */
+
+static int get_crl_score(X509_STORE_CTX *ctx, X509 **pissuer,
+                         unsigned int *preasons, X509_CRL *crl, X509 *x)
+{
+
+    int crl_score = 0;
+    unsigned int tmp_reasons = *preasons, crl_reasons;
+
+    /* First see if we can reject CRL straight away */
+
+    /* Invalid IDP cannot be processed */
+    if (crl->idp_flags & IDP_INVALID)
+        return 0;
+    /* Reason codes or indirect CRLs need extended CRL support */
+    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT)) {
+        if (crl->idp_flags & (IDP_INDIRECT | IDP_REASONS))
+            return 0;
+    } else if (crl->idp_flags & IDP_REASONS) {
+        /* If no new reasons reject */
+        if (!(crl->idp_reasons & ~tmp_reasons))
+            return 0;
+    }
+    /* Don't process deltas at this stage */
+    else if (crl->base_crl_number)
+        return 0;
+    /* If issuer name doesn't match certificate need indirect CRL */
+    if (X509_NAME_cmp(X509_get_issuer_name(x), X509_CRL_get_issuer(crl))) {
+        if (!(crl->idp_flags & IDP_INDIRECT))
+            return 0;
+    } else
+        crl_score |= CRL_SCORE_ISSUER_NAME;
+
+    if (!(crl->flags & EXFLAG_CRITICAL))
+        crl_score |= CRL_SCORE_NOCRITICAL;
+
+    /* Check expiry */
+    if (check_crl_time(ctx, crl, 0))
+        crl_score |= CRL_SCORE_TIME;
+
+    /* Check authority key ID and locate certificate issuer */
+    crl_akid_check(ctx, crl, pissuer, &crl_score);
+
+    /* If we can't locate certificate issuer at this point forget it */
+
+    if (!(crl_score & CRL_SCORE_AKID))
+        return 0;
+
+    /* Check cert for matching CRL distribution points */
+
+    if (crl_crldp_check(x, crl, crl_score, &crl_reasons)) {
+        /* If no new reasons reject */
+        if (!(crl_reasons & ~tmp_reasons))
+            return 0;
+        tmp_reasons |= crl_reasons;
+        crl_score |= CRL_SCORE_SCOPE;
+    }
+
+    *preasons = tmp_reasons;
+
+    return crl_score;
+
+}
+
+static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
+                           X509 **pissuer, int *pcrl_score)
+{
+    X509 *crl_issuer = NULL;
+    X509_NAME *cnm = X509_CRL_get_issuer(crl);
+    int cidx = ctx->error_depth;
+    size_t i;
+
+    if ((size_t)cidx != sk_X509_num(ctx->chain) - 1)
+        cidx++;
+
+    crl_issuer = sk_X509_value(ctx->chain, cidx);
+
+    if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+        if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
+            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
+            *pissuer = crl_issuer;
+            return;
+        }
+    }
+
+    for (cidx++; cidx < (int)sk_X509_num(ctx->chain); cidx++) {
+        crl_issuer = sk_X509_value(ctx->chain, cidx);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_SAME_PATH;
+            *pissuer = crl_issuer;
+            return;
+        }
+    }
+
+    /* Anything else needs extended CRL support */
+
+    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))
+        return;
+
+    /*
+     * Otherwise the CRL issuer is not on the path. Look for it in the set of
+     * untrusted certificates.
+     */
+    for (i = 0; i < sk_X509_num(ctx->untrusted); i++) {
+        crl_issuer = sk_X509_value(ctx->untrusted, i);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pissuer = crl_issuer;
+            *pcrl_score |= CRL_SCORE_AKID;
+            return;
+        }
+    }
+
+    for (i = 0; i < sk_X509_num(ctx->ctx->additional_untrusted); i++) {
+        crl_issuer = sk_X509_value(ctx->ctx->additional_untrusted, i);
+        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
+            continue;
+        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
+            *pissuer = crl_issuer;
+            *pcrl_score |= CRL_SCORE_AKID;
+            return;
+        }
+    }
+}
+
+/*
+ * Check the path of a CRL issuer certificate. This creates a new
+ * X509_STORE_CTX and populates it with most of the parameters from the
+ * parent. This could be optimised somewhat since a lot of path checking will
+ * be duplicated by the parent, but this will rarely be used in practice.
+ */
+
+static int check_crl_path(X509_STORE_CTX *ctx, X509 *x)
+{
+    X509_STORE_CTX crl_ctx;
+    int ret;
+    /* Don't allow recursive CRL path validation */
+    if (ctx->parent)
+        return 0;
+    if (!X509_STORE_CTX_init(&crl_ctx, ctx->ctx, x, ctx->untrusted))
+        return -1;
+
+    crl_ctx.crls = ctx->crls;
+    /* Copy verify params across */
+    X509_STORE_CTX_set0_param(&crl_ctx, ctx->param);
+
+    crl_ctx.parent = ctx;
+    crl_ctx.verify_cb = ctx->verify_cb;
+
+    /* Verify CRL issuer */
+    ret = X509_verify_cert(&crl_ctx);
+
+    if (ret <= 0)
+        goto err;
+
+    /* Check chain is acceptable */
+
+    ret = check_crl_chain(ctx, ctx->chain, crl_ctx.chain);
+ err:
+    X509_STORE_CTX_cleanup(&crl_ctx);
+    return ret;
+}
+
+/*
+ * RFC3280 says nothing about the relationship between CRL path and
+ * certificate path, which could lead to situations where a certificate could
+ * be revoked or validated by a CA not authorised to do so. RFC5280 is more
+ * strict and states that the two paths must end in the same trust anchor,
+ * though some discussions remain... until this is resolved we use the
+ * RFC5280 version
+ */
+
+static int check_crl_chain(X509_STORE_CTX *ctx,
+                           STACK_OF(X509) *cert_path,
+                           STACK_OF(X509) *crl_path)
+{
+    X509 *cert_ta, *crl_ta;
+    cert_ta = sk_X509_value(cert_path, sk_X509_num(cert_path) - 1);
+    crl_ta = sk_X509_value(crl_path, sk_X509_num(crl_path) - 1);
+    if (!X509_cmp(cert_ta, crl_ta))
+        return 1;
+    return 0;
+}
+
+/*
+ * Check for match between two dist point names: three separate cases. 1.
+ * Both are relative names and compare X509_NAME types. 2. One full, one
+ * relative. Compare X509_NAME to GENERAL_NAMES. 3. Both are full names and
+ * compare two GENERAL_NAMES. 4. One is NULL: automatic match.
+ */
+
+static int idp_check_dp(DIST_POINT_NAME *a, DIST_POINT_NAME *b)
+{
+    X509_NAME *nm = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gena, *genb;
+    size_t i, j;
+    if (!a || !b)
+        return 1;
+    if (a->type == 1) {
+        if (!a->dpname)
+            return 0;
+        /* Case 1: two X509_NAME */
+        if (b->type == 1) {
+            if (!b->dpname)
+                return 0;
+            if (!X509_NAME_cmp(a->dpname, b->dpname))
+                return 1;
+            else
+                return 0;
+        }
+        /* Case 2: set name and GENERAL_NAMES appropriately */
+        nm = a->dpname;
+        gens = b->name.fullname;
+    } else if (b->type == 1) {
+        if (!b->dpname)
+            return 0;
+        /* Case 2: set name and GENERAL_NAMES appropriately */
+        gens = a->name.fullname;
+        nm = b->dpname;
+    }
+
+    /* Handle case 2 with one GENERAL_NAMES and one X509_NAME */
+    if (nm) {
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            gena = sk_GENERAL_NAME_value(gens, i);
+            if (gena->type != GEN_DIRNAME)
+                continue;
+            if (!X509_NAME_cmp(nm, gena->d.directoryName))
+                return 1;
+        }
+        return 0;
+    }
+
+    /* Else case 3: two GENERAL_NAMES */
+
+    for (i = 0; i < sk_GENERAL_NAME_num(a->name.fullname); i++) {
+        gena = sk_GENERAL_NAME_value(a->name.fullname, i);
+        for (j = 0; j < sk_GENERAL_NAME_num(b->name.fullname); j++) {
+            genb = sk_GENERAL_NAME_value(b->name.fullname, j);
+            if (!GENERAL_NAME_cmp(gena, genb))
+                return 1;
+        }
+    }
+
+    return 0;
+
+}
+
+static int crldp_check_crlissuer(DIST_POINT *dp, X509_CRL *crl, int crl_score)
+{
+    size_t i;
+    X509_NAME *nm = X509_CRL_get_issuer(crl);
+    /* If no CRLissuer return is successful iff don't need a match */
+    if (!dp->CRLissuer)
+        return ! !(crl_score & CRL_SCORE_ISSUER_NAME);
+    for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
+        if (gen->type != GEN_DIRNAME)
+            continue;
+        if (!X509_NAME_cmp(gen->d.directoryName, nm))
+            return 1;
+    }
+    return 0;
+}
+
+/* Check CRLDP and IDP */
+
+static int crl_crldp_check(X509 *x, X509_CRL *crl, int crl_score,
+                           unsigned int *preasons)
+{
+    size_t i;
+    if (crl->idp_flags & IDP_ONLYATTR)
+        return 0;
+    if (x->ex_flags & EXFLAG_CA) {
+        if (crl->idp_flags & IDP_ONLYUSER)
+            return 0;
+    } else {
+        if (crl->idp_flags & IDP_ONLYCA)
+            return 0;
+    }
+    *preasons = crl->idp_reasons;
+    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++) {
+        DIST_POINT *dp = sk_DIST_POINT_value(x->crldp, i);
+        if (crldp_check_crlissuer(dp, crl, crl_score)) {
+            if (!crl->idp || idp_check_dp(dp->distpoint, crl->idp->distpoint)) {
+                *preasons &= dp->dp_reasons;
+                return 1;
+            }
+        }
+    }
+    if ((!crl->idp || !crl->idp->distpoint)
+        && (crl_score & CRL_SCORE_ISSUER_NAME))
+        return 1;
+    return 0;
+}
+
+/*
+ * Retrieve CRL corresponding to current certificate. If deltas enabled try
+ * to find a delta CRL too
+ */
+
+static int get_crl_delta(X509_STORE_CTX *ctx,
+                         X509_CRL **pcrl, X509_CRL **pdcrl, X509 *x)
+{
+    int ok;
+    X509 *issuer = NULL;
+    int crl_score = 0;
+    unsigned int reasons;
+    X509_CRL *crl = NULL, *dcrl = NULL;
+    STACK_OF(X509_CRL) *skcrl;
+    X509_NAME *nm = X509_get_issuer_name(x);
+    reasons = ctx->current_reasons;
+    ok = get_crl_sk(ctx, &crl, &dcrl,
+                    &issuer, &crl_score, &reasons, ctx->crls);
+
+    if (ok)
+        goto done;
+
+    /* Lookup CRLs from store */
+
+    skcrl = ctx->lookup_crls(ctx, nm);
+
+    /* If no CRLs found and a near match from get_crl_sk use that */
+    if (!skcrl && crl)
+        goto done;
+
+    get_crl_sk(ctx, &crl, &dcrl, &issuer, &crl_score, &reasons, skcrl);
+
+    sk_X509_CRL_pop_free(skcrl, X509_CRL_free);
+
+ done:
+
+    /* If we got any kind of CRL use it and return success */
+    if (crl) {
+        ctx->current_issuer = issuer;
+        ctx->current_crl_score = crl_score;
+        ctx->current_reasons = reasons;
+        *pcrl = crl;
+        *pdcrl = dcrl;
+        return 1;
+    }
+
+    return 0;
+}
+
+/* Check CRL validity */
+static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
+{
+    X509 *issuer = NULL;
+    EVP_PKEY *ikey = NULL;
+    int ok = 0, chnum, cnum;
+    cnum = ctx->error_depth;
+    chnum = sk_X509_num(ctx->chain) - 1;
+    /* if we have an alternative CRL issuer cert use that */
+    if (ctx->current_issuer)
+        issuer = ctx->current_issuer;
+
+    /*
+     * Else find CRL issuer: if not last certificate then issuer is next
+     * certificate in chain.
+     */
+    else if (cnum < chnum)
+        issuer = sk_X509_value(ctx->chain, cnum + 1);
+    else {
+        issuer = sk_X509_value(ctx->chain, chnum);
+        /* If not self signed, can't check signature */
+        if (!ctx->check_issued(ctx, issuer, issuer)) {
+            ctx->error = X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER;
+            ok = ctx->verify_cb(0, ctx);
+            if (!ok)
+                goto err;
+        }
+    }
+
+    if (issuer) {
+        /*
+         * Skip most tests for deltas because they have already been done
+         */
+        if (!crl->base_crl_number) {
+            /* Check for cRLSign bit if keyUsage present */
+            if ((issuer->ex_flags & EXFLAG_KUSAGE) &&
+                !(issuer->ex_kusage & KU_CRL_SIGN)) {
+                ctx->error = X509_V_ERR_KEYUSAGE_NO_CRL_SIGN;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+            if (!(ctx->current_crl_score & CRL_SCORE_SCOPE)) {
+                ctx->error = X509_V_ERR_DIFFERENT_CRL_SCOPE;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+            if (!(ctx->current_crl_score & CRL_SCORE_SAME_PATH)) {
+                if (check_crl_path(ctx, ctx->current_issuer) <= 0) {
+                    ctx->error = X509_V_ERR_CRL_PATH_VALIDATION_ERROR;
+                    ok = ctx->verify_cb(0, ctx);
+                    if (!ok)
+                        goto err;
+                }
+            }
+
+            if (crl->idp_flags & IDP_INVALID) {
+                ctx->error = X509_V_ERR_INVALID_EXTENSION;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+
+        }
+
+        if (!(ctx->current_crl_score & CRL_SCORE_TIME)) {
+            ok = check_crl_time(ctx, crl, 1);
+            if (!ok)
+                goto err;
+        }
+
+        /* Attempt to get issuer certificate public key */
+        ikey = X509_get_pubkey(issuer);
+
+        if (!ikey) {
+            ctx->error = X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+            ok = ctx->verify_cb(0, ctx);
+            if (!ok)
+                goto err;
+        } else {
+            int rv;
+            rv = X509_CRL_check_suiteb(crl, ikey, ctx->param->flags);
+            if (rv != X509_V_OK) {
+                ctx->error = rv;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+            /* Verify CRL signature */
+            if (X509_CRL_verify(crl, ikey) <= 0) {
+                ctx->error = X509_V_ERR_CRL_SIGNATURE_FAILURE;
+                ok = ctx->verify_cb(0, ctx);
+                if (!ok)
+                    goto err;
+            }
+        }
+    }
+
+    ok = 1;
+
+ err:
+    EVP_PKEY_free(ikey);
+    return ok;
+}
+
+/* Check certificate against CRL */
+static int cert_crl(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x)
+{
+    int ok;
+    X509_REVOKED *rev;
+    /*
+     * The rules changed for this... previously if a CRL contained unhandled
+     * critical extensions it could still be used to indicate a certificate
+     * was revoked. This has since been changed since critical extension can
+     * change the meaning of CRL entries.
+     */
+    if (!(ctx->param->flags & X509_V_FLAG_IGNORE_CRITICAL)
+        && (crl->flags & EXFLAG_CRITICAL)) {
+        ctx->error = X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION;
+        ok = ctx->verify_cb(0, ctx);
+        if (!ok)
+            return 0;
+    }
+    /*
+     * Look for serial number of certificate in CRL If found make sure reason
+     * is not removeFromCRL.
+     */
+    if (X509_CRL_get0_by_cert(crl, &rev, x)) {
+        if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
+            return 2;
+        ctx->error = X509_V_ERR_CERT_REVOKED;
+        ok = ctx->verify_cb(0, ctx);
+        if (!ok)
+            return 0;
+    }
+
+    return 1;
+}
+
+static int check_policy(X509_STORE_CTX *ctx)
+{
+    int ret;
+    if (ctx->parent)
+        return 1;
+    ret = X509_policy_check(&ctx->tree, &ctx->explicit_policy, ctx->chain,
+                            ctx->param->policies, ctx->param->flags);
+    if (ret == 0) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        ctx->error = X509_V_ERR_OUT_OF_MEM;
+        return 0;
+    }
+    /* Invalid or inconsistent extensions */
+    if (ret == -1) {
+        /*
+         * Locate certificates with bad extensions and notify callback.
+         */
+        X509 *x;
+        size_t i;
+        for (i = 1; i < sk_X509_num(ctx->chain); i++) {
+            x = sk_X509_value(ctx->chain, i);
+            if (!(x->ex_flags & EXFLAG_INVALID_POLICY))
+                continue;
+            ctx->current_cert = x;
+            ctx->error = X509_V_ERR_INVALID_POLICY_EXTENSION;
+            if (!ctx->verify_cb(0, ctx))
+                return 0;
+        }
+        return 1;
+    }
+    if (ret == -2) {
+        ctx->current_cert = NULL;
+        ctx->error = X509_V_ERR_NO_EXPLICIT_POLICY;
+        return ctx->verify_cb(0, ctx);
+    }
+
+    if (ctx->param->flags & X509_V_FLAG_NOTIFY_POLICY) {
+        ctx->current_cert = NULL;
+        /*
+         * Verification errors need to be "sticky", a callback may have allowed
+         * an SSL handshake to continue despite an error, and we must then
+         * remain in an error state.  Therefore, we MUST NOT clear earlier
+         * verification errors by setting the error to X509_V_OK.
+         */
+        if (!ctx->verify_cb(2, ctx))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int check_cert_time(X509_STORE_CTX *ctx, X509 *x)
+{
+    time_t *ptime;
+    int i;
+
+    if (ctx->param->flags & X509_V_FLAG_USE_CHECK_TIME)
+        ptime = &ctx->param->check_time;
+    else
+        ptime = NULL;
+
+    i = X509_cmp_time(X509_get_notBefore(x), ptime);
+    if (i == 0) {
+        ctx->error = X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i > 0) {
+        ctx->error = X509_V_ERR_CERT_NOT_YET_VALID;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    i = X509_cmp_time(X509_get_notAfter(x), ptime);
+    if (i == 0) {
+        ctx->error = X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    if (i < 0) {
+        ctx->error = X509_V_ERR_CERT_HAS_EXPIRED;
+        ctx->current_cert = x;
+        if (!ctx->verify_cb(0, ctx))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int internal_verify(X509_STORE_CTX *ctx)
+{
+    int ok = 0, n;
+    X509 *xs, *xi;
+    EVP_PKEY *pkey = NULL;
+    int (*cb) (int xok, X509_STORE_CTX *xctx);
+
+    cb = ctx->verify_cb;
+
+    n = sk_X509_num(ctx->chain);
+    ctx->error_depth = n - 1;
+    n--;
+    xi = sk_X509_value(ctx->chain, n);
+
+    if (ctx->check_issued(ctx, xi, xi))
+        xs = xi;
+    else {
+        if (ctx->param->flags & X509_V_FLAG_PARTIAL_CHAIN) {
+            xs = xi;
+            goto check_cert;
+        }
+        if (n <= 0) {
+            ctx->error = X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
+            ctx->current_cert = xi;
+            ok = cb(0, ctx);
+            goto end;
+        } else {
+            n--;
+            ctx->error_depth = n;
+            xs = sk_X509_value(ctx->chain, n);
+        }
+    }
+
+/*      ctx->error=0;  not needed */
+    while (n >= 0) {
+        ctx->error_depth = n;
+
+        /*
+         * Skip signature check for self signed certificates unless
+         * explicitly asked for. It doesn't add any security and just wastes
+         * time.
+         */
+        if (xs != xi || (ctx->param->flags & X509_V_FLAG_CHECK_SS_SIGNATURE)) {
+            if ((pkey = X509_get_pubkey(xi)) == NULL) {
+                ctx->error = X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
+                ctx->current_cert = xi;
+                ok = (*cb) (0, ctx);
+                if (!ok)
+                    goto end;
+            } else if (X509_verify(xs, pkey) <= 0) {
+                ctx->error = X509_V_ERR_CERT_SIGNATURE_FAILURE;
+                ctx->current_cert = xs;
+                ok = (*cb) (0, ctx);
+                if (!ok) {
+                    EVP_PKEY_free(pkey);
+                    goto end;
+                }
+            }
+            EVP_PKEY_free(pkey);
+            pkey = NULL;
+        }
+
+ check_cert:
+        ok = check_cert_time(ctx, xs);
+        if (!ok)
+            goto end;
+
+        /* The last error (if any) is still in the error value */
+        ctx->current_issuer = xi;
+        ctx->current_cert = xs;
+        ok = (*cb) (1, ctx);
+        if (!ok)
+            goto end;
+
+        n--;
+        if (n >= 0) {
+            xi = xs;
+            xs = sk_X509_value(ctx->chain, n);
+        }
+    }
+    ok = 1;
+ end:
+    return ok;
+}
+
+int X509_cmp_current_time(const ASN1_TIME *ctm)
+{
+    return X509_cmp_time(ctm, NULL);
+}
+
+int X509_cmp_time(const ASN1_TIME *ctm, time_t *cmp_time)
+{
+    static const size_t utctime_length = sizeof("YYMMDDHHMMSSZ") - 1;
+    static const size_t generalizedtime_length = sizeof("YYYYMMDDHHMMSSZ") - 1;
+    ASN1_TIME *asn1_cmp_time = NULL;
+    int i, day, sec, ret = 0;
+
+    /*
+     * Note that ASN.1 allows much more slack in the time format than RFC5280.
+     * In RFC5280, the representation is fixed:
+     * UTCTime: YYMMDDHHMMSSZ
+     * GeneralizedTime: YYYYMMDDHHMMSSZ
+     *
+     * We do NOT currently enforce the following RFC 5280 requirement:
+     * "CAs conforming to this profile MUST always encode certificate
+     *  validity dates through the year 2049 as UTCTime; certificate validity
+     *  dates in 2050 or later MUST be encoded as GeneralizedTime."
+     */
+    switch (ctm->type) {
+    case V_ASN1_UTCTIME:
+        if (ctm->length != (int)(utctime_length))
+            return 0;
+        break;
+    case V_ASN1_GENERALIZEDTIME:
+        if (ctm->length != (int)(generalizedtime_length))
+            return 0;
+        break;
+    default:
+        return 0;
+    }
+
+    /**
+     * Verify the format: the ASN.1 functions we use below allow a more
+     * flexible format than what's mandated by RFC 5280.
+     * Digit and date ranges will be verified in the conversion methods.
+     */
+    for (i = 0; i < ctm->length - 1; i++) {
+        if (!isdigit(ctm->data[i]))
+            return 0;
+    }
+    if (ctm->data[ctm->length - 1] != 'Z')
+        return 0;
+
+    /*
+     * There is ASN1_UTCTIME_cmp_time_t but no
+     * ASN1_GENERALIZEDTIME_cmp_time_t or ASN1_TIME_cmp_time_t,
+     * so we go through ASN.1
+     */
+    asn1_cmp_time = X509_time_adj(NULL, 0, cmp_time);
+    if (asn1_cmp_time == NULL)
+        goto err;
+    if (!ASN1_TIME_diff(&day, &sec, ctm, asn1_cmp_time))
+        goto err;
+
+    /*
+     * X509_cmp_time comparison is <=.
+     * The return value 0 is reserved for errors.
+     */
+    ret = (day >= 0 && sec >= 0) ? -1 : 1;
+
+ err:
+    ASN1_TIME_free(asn1_cmp_time);
+    return ret;
+}
+
+ASN1_TIME *X509_gmtime_adj(ASN1_TIME *s, long adj)
+{
+    return X509_time_adj(s, adj, NULL);
+}
+
+ASN1_TIME *X509_time_adj(ASN1_TIME *s, long offset_sec, time_t *in_tm)
+{
+    return X509_time_adj_ex(s, 0, offset_sec, in_tm);
+}
+
+ASN1_TIME *X509_time_adj_ex(ASN1_TIME *s,
+                            int offset_day, long offset_sec, time_t *in_tm)
+{
+    time_t t = 0;
+
+    if (in_tm)
+        t = *in_tm;
+    else
+        time(&t);
+
+    if (s && !(s->flags & ASN1_STRING_FLAG_MSTRING)) {
+        if (s->type == V_ASN1_UTCTIME)
+            return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
+        if (s->type == V_ASN1_GENERALIZEDTIME)
+            return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
+    }
+    return ASN1_TIME_adj(s, t, offset_day, offset_sec);
+}
+
+/* Make a delta CRL as the diff between two full CRLs */
+
+X509_CRL *X509_CRL_diff(X509_CRL *base, X509_CRL *newer,
+                        EVP_PKEY *skey, const EVP_MD *md, unsigned int flags)
+{
+    X509_CRL *crl = NULL;
+    int i;
+    size_t j;
+    STACK_OF(X509_REVOKED) *revs = NULL;
+    /* CRLs can't be delta already */
+    if (base->base_crl_number || newer->base_crl_number) {
+        OPENSSL_PUT_ERROR(X509, X509_R_CRL_ALREADY_DELTA);
+        return NULL;
+    }
+    /* Base and new CRL must have a CRL number */
+    if (!base->crl_number || !newer->crl_number) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NO_CRL_NUMBER);
+        return NULL;
+    }
+    /* Issuer names must match */
+    if (X509_NAME_cmp(X509_CRL_get_issuer(base), X509_CRL_get_issuer(newer))) {
+        OPENSSL_PUT_ERROR(X509, X509_R_ISSUER_MISMATCH);
+        return NULL;
+    }
+    /* AKID and IDP must match */
+    if (!crl_extension_match(base, newer, NID_authority_key_identifier)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_AKID_MISMATCH);
+        return NULL;
+    }
+    if (!crl_extension_match(base, newer, NID_issuing_distribution_point)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_IDP_MISMATCH);
+        return NULL;
+    }
+    /* Newer CRL number must exceed full CRL number */
+    if (ASN1_INTEGER_cmp(newer->crl_number, base->crl_number) <= 0) {
+        OPENSSL_PUT_ERROR(X509, X509_R_NEWER_CRL_NOT_NEWER);
+        return NULL;
+    }
+    /* CRLs must verify */
+    if (skey && (X509_CRL_verify(base, skey) <= 0 ||
+                 X509_CRL_verify(newer, skey) <= 0)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_CRL_VERIFY_FAILURE);
+        return NULL;
+    }
+    /* Create new CRL */
+    crl = X509_CRL_new();
+    if (!crl || !X509_CRL_set_version(crl, 1))
+        goto memerr;
+    /* Set issuer name */
+    if (!X509_CRL_set_issuer_name(crl, X509_CRL_get_issuer(newer)))
+        goto memerr;
+
+    if (!X509_CRL_set_lastUpdate(crl, X509_CRL_get_lastUpdate(newer)))
+        goto memerr;
+    if (!X509_CRL_set_nextUpdate(crl, X509_CRL_get_nextUpdate(newer)))
+        goto memerr;
+
+    /* Set base CRL number: must be critical */
+
+    if (!X509_CRL_add1_ext_i2d(crl, NID_delta_crl, base->crl_number, 1, 0))
+        goto memerr;
+
+    /*
+     * Copy extensions across from newest CRL to delta: this will set CRL
+     * number to correct value too.
+     */
+
+    for (i = 0; i < X509_CRL_get_ext_count(newer); i++) {
+        X509_EXTENSION *ext;
+        ext = X509_CRL_get_ext(newer, i);
+        if (!X509_CRL_add_ext(crl, ext, -1))
+            goto memerr;
+    }
+
+    /* Go through revoked entries, copying as needed */
+
+    revs = X509_CRL_get_REVOKED(newer);
+
+    for (j = 0; j < sk_X509_REVOKED_num(revs); j++) {
+        X509_REVOKED *rvn, *rvtmp;
+        rvn = sk_X509_REVOKED_value(revs, j);
+        /*
+         * Add only if not also in base. TODO: need something cleverer here
+         * for some more complex CRLs covering multiple CAs.
+         */
+        if (!X509_CRL_get0_by_serial(base, &rvtmp, rvn->serialNumber)) {
+            rvtmp = X509_REVOKED_dup(rvn);
+            if (!rvtmp)
+                goto memerr;
+            if (!X509_CRL_add0_revoked(crl, rvtmp)) {
+                X509_REVOKED_free(rvtmp);
+                goto memerr;
+            }
+        }
+    }
+    /* TODO: optionally prune deleted entries */
+
+    if (skey && md && !X509_CRL_sign(crl, skey, md))
+        goto memerr;
+
+    return crl;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    if (crl)
+        X509_CRL_free(crl);
+    return NULL;
+}
+
+int X509_STORE_CTX_get_ex_new_index(long argl, void *argp,
+                                    CRYPTO_EX_unused * unused,
+                                    CRYPTO_EX_dup *dup_unused,
+                                    CRYPTO_EX_free *free_func)
+{
+    /*
+     * This function is (usually) called only once, by
+     * SSL_get_ex_data_X509_STORE_CTX_idx (ssl/ssl_cert.c).
+     */
+    int index;
+    if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                                 free_func)) {
+        return -1;
+    }
+    return index;
+}
+
+int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
+{
+    return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
+}
+
+void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
+{
+    return CRYPTO_get_ex_data(&ctx->ex_data, idx);
+}
+
+int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
+{
+    return ctx->error;
+}
+
+void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
+{
+    ctx->error = err;
+}
+
+int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
+{
+    return ctx->error_depth;
+}
+
+X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
+{
+    return ctx->current_cert;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
+{
+    return ctx->chain;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx)
+{
+    if (!ctx->chain)
+        return NULL;
+    return X509_chain_up_ref(ctx->chain);
+}
+
+X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx)
+{
+    return ctx->current_issuer;
+}
+
+X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx)
+{
+    return ctx->current_crl;
+}
+
+X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx)
+{
+    return ctx->parent;
+}
+
+void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
+{
+    ctx->cert = x;
+}
+
+void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+{
+    ctx->untrusted = sk;
+}
+
+STACK_OF(X509) *X509_STORE_CTX_get0_untrusted(X509_STORE_CTX *ctx)
+{
+    return ctx->untrusted;
+}
+
+void X509_STORE_CTX_set0_crls(X509_STORE_CTX *ctx, STACK_OF(X509_CRL) *sk)
+{
+    ctx->crls = sk;
+}
+
+int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose)
+{
+    return X509_STORE_CTX_purpose_inherit(ctx, 0, purpose, 0);
+}
+
+int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust)
+{
+    return X509_STORE_CTX_purpose_inherit(ctx, 0, 0, trust);
+}
+
+/*
+ * This function is used to set the X509_STORE_CTX purpose and trust values.
+ * This is intended to be used when another structure has its own trust and
+ * purpose values which (if set) will be inherited by the ctx. If they aren't
+ * set then we will usually have a default purpose in mind which should then
+ * be used to set the trust value. An example of this is SSL use: an SSL
+ * structure will have its own purpose and trust settings which the
+ * application can set: if they aren't set then we use the default of SSL
+ * client/server.
+ */
+
+int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+                                   int purpose, int trust)
+{
+    int idx;
+    /* If purpose not set use default */
+    if (!purpose)
+        purpose = def_purpose;
+    /* If we have a purpose then check it is valid */
+    if (purpose) {
+        X509_PURPOSE *ptmp;
+        idx = X509_PURPOSE_get_by_id(purpose);
+        if (idx == -1) {
+            OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_PURPOSE_ID);
+            return 0;
+        }
+        ptmp = X509_PURPOSE_get0(idx);
+        if (ptmp->trust == X509_TRUST_DEFAULT) {
+            idx = X509_PURPOSE_get_by_id(def_purpose);
+            if (idx == -1) {
+                OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_PURPOSE_ID);
+                return 0;
+            }
+            ptmp = X509_PURPOSE_get0(idx);
+        }
+        /* If trust not set then get from purpose default */
+        if (!trust)
+            trust = ptmp->trust;
+    }
+    if (trust) {
+        idx = X509_TRUST_get_by_id(trust);
+        if (idx == -1) {
+            OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_TRUST_ID);
+            return 0;
+        }
+    }
+
+    if (purpose && !ctx->param->purpose)
+        ctx->param->purpose = purpose;
+    if (trust && !ctx->param->trust)
+        ctx->param->trust = trust;
+    return 1;
+}
+
+X509_STORE_CTX *X509_STORE_CTX_new(void)
+{
+    X509_STORE_CTX *ctx;
+    ctx = (X509_STORE_CTX *)OPENSSL_malloc(sizeof(X509_STORE_CTX));
+    if (!ctx) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    X509_STORE_CTX_zero(ctx);
+    return ctx;
+}
+
+void X509_STORE_CTX_zero(X509_STORE_CTX *ctx)
+{
+    OPENSSL_memset(ctx, 0, sizeof(X509_STORE_CTX));
+}
+
+void X509_STORE_CTX_free(X509_STORE_CTX *ctx)
+{
+    if (ctx == NULL) {
+        return;
+    }
+    X509_STORE_CTX_cleanup(ctx);
+    OPENSSL_free(ctx);
+}
+
+int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store, X509 *x509,
+                        STACK_OF(X509) *chain)
+{
+    int ret = 1;
+
+    X509_STORE_CTX_zero(ctx);
+    ctx->ctx = store;
+    ctx->cert = x509;
+    ctx->untrusted = chain;
+
+    CRYPTO_new_ex_data(&ctx->ex_data);
+
+    ctx->param = X509_VERIFY_PARAM_new();
+    if (!ctx->param)
+        goto err;
+
+    /*
+     * Inherit callbacks and flags from X509_STORE if not set use defaults.
+     */
+
+    if (store)
+        ret = X509_VERIFY_PARAM_inherit(ctx->param, store->param);
+    else
+        ctx->param->inh_flags |= X509_VP_FLAG_DEFAULT | X509_VP_FLAG_ONCE;
+
+    if (store) {
+        ctx->verify_cb = store->verify_cb;
+        ctx->cleanup = store->cleanup;
+    } else
+        ctx->cleanup = 0;
+
+    if (ret)
+        ret = X509_VERIFY_PARAM_inherit(ctx->param,
+                                        X509_VERIFY_PARAM_lookup("default"));
+
+    if (ret == 0)
+        goto err;
+
+    if (store && store->check_issued)
+        ctx->check_issued = store->check_issued;
+    else
+        ctx->check_issued = check_issued;
+
+    if (store && store->get_issuer)
+        ctx->get_issuer = store->get_issuer;
+    else
+        ctx->get_issuer = X509_STORE_CTX_get1_issuer;
+
+    if (store && store->verify_cb)
+        ctx->verify_cb = store->verify_cb;
+    else
+        ctx->verify_cb = null_callback;
+
+    if (store && store->verify)
+        ctx->verify = store->verify;
+    else
+        ctx->verify = internal_verify;
+
+    if (store && store->check_revocation)
+        ctx->check_revocation = store->check_revocation;
+    else
+        ctx->check_revocation = check_revocation;
+
+    if (store && store->get_crl)
+        ctx->get_crl = store->get_crl;
+    else
+        ctx->get_crl = NULL;
+
+    if (store && store->check_crl)
+        ctx->check_crl = store->check_crl;
+    else
+        ctx->check_crl = check_crl;
+
+    if (store && store->cert_crl)
+        ctx->cert_crl = store->cert_crl;
+    else
+        ctx->cert_crl = cert_crl;
+
+    if (store && store->lookup_certs)
+        ctx->lookup_certs = store->lookup_certs;
+    else
+        ctx->lookup_certs = X509_STORE_get1_certs;
+
+    if (store && store->lookup_crls)
+        ctx->lookup_crls = store->lookup_crls;
+    else
+        ctx->lookup_crls = X509_STORE_get1_crls;
+
+    ctx->check_policy = check_policy;
+
+    return 1;
+
+ err:
+    CRYPTO_free_ex_data(&g_ex_data_class, ctx, &ctx->ex_data);
+    if (ctx->param != NULL) {
+        X509_VERIFY_PARAM_free(ctx->param);
+    }
+
+    OPENSSL_memset(ctx, 0, sizeof(X509_STORE_CTX));
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    return 0;
+}
+
+/*
+ * Set alternative lookup method: just a STACK of trusted certificates. This
+ * avoids X509_STORE nastiness where it isn't needed.
+ */
+
+void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
+{
+    ctx->other_ctx = sk;
+    ctx->get_issuer = get_issuer_sk;
+}
+
+void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx)
+{
+    /* We need to be idempotent because, unfortunately, |X509_STORE_CTX_free|
+     * also calls this function. */
+    if (ctx->cleanup != NULL) {
+        ctx->cleanup(ctx);
+        ctx->cleanup = NULL;
+    }
+    if (ctx->param != NULL) {
+        if (ctx->parent == NULL)
+            X509_VERIFY_PARAM_free(ctx->param);
+        ctx->param = NULL;
+    }
+    if (ctx->tree != NULL) {
+        X509_policy_tree_free(ctx->tree);
+        ctx->tree = NULL;
+    }
+    if (ctx->chain != NULL) {
+        sk_X509_pop_free(ctx->chain, X509_free);
+        ctx->chain = NULL;
+    }
+    CRYPTO_free_ex_data(&g_ex_data_class, ctx, &(ctx->ex_data));
+    OPENSSL_memset(&ctx->ex_data, 0, sizeof(CRYPTO_EX_DATA));
+}
+
+void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth)
+{
+    X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+}
+
+void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags)
+{
+    X509_VERIFY_PARAM_set_flags(ctx->param, flags);
+}
+
+void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
+                             time_t t)
+{
+    X509_VERIFY_PARAM_set_time(ctx->param, t);
+}
+
+X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx)
+{
+    return ctx->cert;
+}
+
+void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+                                  int (*verify_cb) (int, X509_STORE_CTX *))
+{
+    ctx->verify_cb = verify_cb;
+}
+
+X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx)
+{
+    return ctx->tree;
+}
+
+int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx)
+{
+    return ctx->explicit_policy;
+}
+
+int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name)
+{
+    const X509_VERIFY_PARAM *param;
+    param = X509_VERIFY_PARAM_lookup(name);
+    if (!param)
+        return 0;
+    return X509_VERIFY_PARAM_inherit(ctx->param, param);
+}
+
+X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx)
+{
+    return ctx->param;
+}
+
+void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param)
+{
+    if (ctx->param)
+        X509_VERIFY_PARAM_free(ctx->param);
+    ctx->param = param;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509)
+
+IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c
new file mode 100644
index 0000000..4113562
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c	
@@ -0,0 +1,671 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "vpm_int.h"
+#include "../internal.h"
+
+
+/* X509_VERIFY_PARAM functions */
+
+#define SET_HOST 0
+#define ADD_HOST 1
+
+static char *str_copy(char *s)
+{
+    return OPENSSL_strdup(s);
+}
+
+static void str_free(char *s)
+{
+    OPENSSL_free(s);
+}
+
+#define string_stack_free(sk) sk_OPENSSL_STRING_pop_free(sk, str_free)
+
+static int int_x509_param_set_hosts(X509_VERIFY_PARAM_ID *id, int mode,
+                                    const char *name, size_t namelen)
+{
+    char *copy;
+
+    if (name == NULL || namelen == 0) {
+        // Unlike OpenSSL, we reject trying to set or add an empty name.
+        return 0;
+    }
+
+    /*
+     * Refuse names with embedded NUL bytes.
+     * XXX: Do we need to push an error onto the error stack?
+     */
+    if (name && OPENSSL_memchr(name, '\0', namelen))
+        return 0;
+
+    if (mode == SET_HOST && id->hosts) {
+        string_stack_free(id->hosts);
+        id->hosts = NULL;
+    }
+
+    copy = OPENSSL_strndup(name, namelen);
+    if (copy == NULL)
+        return 0;
+
+    if (id->hosts == NULL &&
+        (id->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
+        OPENSSL_free(copy);
+        return 0;
+    }
+
+    if (!sk_OPENSSL_STRING_push(id->hosts, copy)) {
+        OPENSSL_free(copy);
+        if (sk_OPENSSL_STRING_num(id->hosts) == 0) {
+            sk_OPENSSL_STRING_free(id->hosts);
+            id->hosts = NULL;
+        }
+        return 0;
+    }
+
+    return 1;
+}
+
+static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
+{
+    X509_VERIFY_PARAM_ID *paramid;
+    if (!param)
+        return;
+    param->name = NULL;
+    param->purpose = 0;
+    param->trust = 0;
+    /*
+     * param->inh_flags = X509_VP_FLAG_DEFAULT;
+     */
+    param->inh_flags = 0;
+    param->flags = 0;
+    param->depth = -1;
+    if (param->policies) {
+        sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
+        param->policies = NULL;
+    }
+    paramid = param->id;
+    if (paramid->hosts) {
+        string_stack_free(paramid->hosts);
+        paramid->hosts = NULL;
+    }
+    if (paramid->peername) {
+        OPENSSL_free(paramid->peername);
+        paramid->peername = NULL;
+    }
+    if (paramid->email) {
+        OPENSSL_free(paramid->email);
+        paramid->email = NULL;
+        paramid->emaillen = 0;
+    }
+    if (paramid->ip) {
+        OPENSSL_free(paramid->ip);
+        paramid->ip = NULL;
+        paramid->iplen = 0;
+    }
+    paramid->poison = 0;
+}
+
+X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
+{
+    X509_VERIFY_PARAM *param;
+    X509_VERIFY_PARAM_ID *paramid;
+    param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
+    if (!param)
+        return NULL;
+    paramid = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM_ID));
+    if (!paramid) {
+        OPENSSL_free(param);
+        return NULL;
+    }
+    OPENSSL_memset(param, 0, sizeof(X509_VERIFY_PARAM));
+    OPENSSL_memset(paramid, 0, sizeof(X509_VERIFY_PARAM_ID));
+    param->id = paramid;
+    x509_verify_param_zero(param);
+    return param;
+}
+
+void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
+{
+    if (param == NULL)
+        return;
+    x509_verify_param_zero(param);
+    OPENSSL_free(param->id);
+    OPENSSL_free(param);
+}
+
+/*-
+ * This function determines how parameters are "inherited" from one structure
+ * to another. There are several different ways this can happen.
+ *
+ * 1. If a child structure needs to have its values initialized from a parent
+ *    they are simply copied across. For example SSL_CTX copied to SSL.
+ * 2. If the structure should take on values only if they are currently unset.
+ *    For example the values in an SSL structure will take appropriate value
+ *    for SSL servers or clients but only if the application has not set new
+ *    ones.
+ *
+ * The "inh_flags" field determines how this function behaves.
+ *
+ * Normally any values which are set in the default are not copied from the
+ * destination and verify flags are ORed together.
+ *
+ * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
+ * to the destination. Effectively the values in "to" become default values
+ * which will be used only if nothing new is set in "from".
+ *
+ * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
+ * they are set or not. Flags is still Ored though.
+ *
+ * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
+ * of ORed.
+ *
+ * If X509_VP_FLAG_LOCKED is set then no values are copied.
+ *
+ * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
+ * after the next call.
+ */
+
+/* Macro to test if a field should be copied from src to dest */
+
+#define test_x509_verify_param_copy(field, def) \
+  (to_overwrite ||                              \
+   ((src->field != (def)) && (to_default || (dest->field == (def)))))
+
+/* As above but for ID fields */
+
+#define test_x509_verify_param_copy_id(idf, def) \
+        test_x509_verify_param_copy(id->idf, def)
+
+/* Macro to test and copy a field if necessary */
+
+#define x509_verify_param_copy(field, def) \
+        if (test_x509_verify_param_copy(field, def)) \
+                dest->field = src->field
+
+int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
+                              const X509_VERIFY_PARAM *src)
+{
+    unsigned long inh_flags;
+    int to_default, to_overwrite;
+    X509_VERIFY_PARAM_ID *id;
+    if (!src)
+        return 1;
+    id = src->id;
+    inh_flags = dest->inh_flags | src->inh_flags;
+
+    if (inh_flags & X509_VP_FLAG_ONCE)
+        dest->inh_flags = 0;
+
+    if (inh_flags & X509_VP_FLAG_LOCKED)
+        return 1;
+
+    if (inh_flags & X509_VP_FLAG_DEFAULT)
+        to_default = 1;
+    else
+        to_default = 0;
+
+    if (inh_flags & X509_VP_FLAG_OVERWRITE)
+        to_overwrite = 1;
+    else
+        to_overwrite = 0;
+
+    x509_verify_param_copy(purpose, 0);
+    x509_verify_param_copy(trust, 0);
+    x509_verify_param_copy(depth, -1);
+
+    /* If overwrite or check time not set, copy across */
+
+    if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
+        dest->check_time = src->check_time;
+        dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
+        /* Don't need to copy flag: that is done below */
+    }
+
+    if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
+        dest->flags = 0;
+
+    dest->flags |= src->flags;
+
+    if (test_x509_verify_param_copy(policies, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
+            return 0;
+    }
+
+    /* Copy the host flags if and only if we're copying the host list */
+    if (test_x509_verify_param_copy_id(hosts, NULL)) {
+        if (dest->id->hosts) {
+            string_stack_free(dest->id->hosts);
+            dest->id->hosts = NULL;
+        }
+        if (id->hosts) {
+            dest->id->hosts =
+                sk_OPENSSL_STRING_deep_copy(id->hosts, str_copy, str_free);
+            if (dest->id->hosts == NULL)
+                return 0;
+            dest->id->hostflags = id->hostflags;
+        }
+    }
+
+    if (test_x509_verify_param_copy_id(email, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_email(dest, id->email, id->emaillen))
+            return 0;
+    }
+
+    if (test_x509_verify_param_copy_id(ip, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_ip(dest, id->ip, id->iplen))
+            return 0;
+    }
+
+    dest->id->poison = src->id->poison;
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
+                           const X509_VERIFY_PARAM *from)
+{
+    unsigned long save_flags = to->inh_flags;
+    int ret;
+    to->inh_flags |= X509_VP_FLAG_DEFAULT;
+    ret = X509_VERIFY_PARAM_inherit(to, from);
+    to->inh_flags = save_flags;
+    return ret;
+}
+
+static int int_x509_param_set1(char **pdest, size_t *pdestlen,
+                               const char *src, size_t srclen)
+{
+    void *tmp;
+    if (src == NULL || srclen == 0) {
+        // Unlike OpenSSL, we do not allow an empty string to disable previously
+        // configured checks.
+        return 0;
+    }
+
+    tmp = OPENSSL_memdup(src, srclen);
+    if (!tmp) {
+        return 0;
+    }
+
+    if (*pdest)
+        OPENSSL_free(*pdest);
+    *pdest = tmp;
+    if (pdestlen)
+        *pdestlen = srclen;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
+{
+    if (param->name)
+        OPENSSL_free(param->name);
+    param->name = OPENSSL_strdup(name);
+    if (param->name)
+        return 1;
+    return 0;
+}
+
+int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
+{
+    param->flags |= flags;
+    if (flags & X509_V_FLAG_POLICY_MASK)
+        param->flags |= X509_V_FLAG_POLICY_CHECK;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+                                  unsigned long flags)
+{
+    param->flags &= ~flags;
+    return 1;
+}
+
+unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
+{
+    return param->flags;
+}
+
+int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
+{
+    return X509_PURPOSE_set(&param->purpose, purpose);
+}
+
+int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
+{
+    return X509_TRUST_set(&param->trust, trust);
+}
+
+void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
+{
+    param->depth = depth;
+}
+
+void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
+{
+    param->check_time = t;
+    param->flags |= X509_V_FLAG_USE_CHECK_TIME;
+}
+
+int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+                                  ASN1_OBJECT *policy)
+{
+    if (!param->policies) {
+        param->policies = sk_ASN1_OBJECT_new_null();
+        if (!param->policies)
+            return 0;
+    }
+    if (!sk_ASN1_OBJECT_push(param->policies, policy))
+        return 0;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
+                                    STACK_OF(ASN1_OBJECT) *policies)
+{
+    size_t i;
+    ASN1_OBJECT *oid, *doid;
+    if (!param)
+        return 0;
+    if (param->policies)
+        sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
+
+    if (!policies) {
+        param->policies = NULL;
+        return 1;
+    }
+
+    param->policies = sk_ASN1_OBJECT_new_null();
+    if (!param->policies)
+        return 0;
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
+        oid = sk_ASN1_OBJECT_value(policies, i);
+        doid = OBJ_dup(oid);
+        if (!doid)
+            return 0;
+        if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
+            ASN1_OBJECT_free(doid);
+            return 0;
+        }
+    }
+    param->flags |= X509_V_FLAG_POLICY_CHECK;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+                                const char *name, size_t namelen)
+{
+    if (!int_x509_param_set_hosts(param->id, SET_HOST, name, namelen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+    return 1;
+}
+
+int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+                                const char *name, size_t namelen)
+{
+    if (!int_x509_param_set_hosts(param->id, ADD_HOST, name, namelen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+    return 1;
+}
+
+void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+                                     unsigned int flags)
+{
+    param->id->hostflags = flags;
+}
+
+char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
+{
+    return param->id->peername;
+}
+
+int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+                                 const char *email, size_t emaillen)
+{
+    if (OPENSSL_memchr(email, '\0', emaillen) != NULL ||
+        !int_x509_param_set1(&param->id->email, &param->id->emaillen,
+                               email, emaillen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+                              const unsigned char *ip, size_t iplen)
+{
+    if ((iplen != 4 && iplen != 16) ||
+        !int_x509_param_set1((char **)&param->id->ip, &param->id->iplen,
+                             (char *)ip, iplen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc)
+{
+    unsigned char ipout[16];
+    size_t iplen;
+
+    iplen = (size_t)a2i_ipadd(ipout, ipasc);
+    if (iplen == 0)
+        return 0;
+    return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
+}
+
+int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
+{
+    return param->depth;
+}
+
+const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
+{
+    return param->name;
+}
+
+static const X509_VERIFY_PARAM_ID _empty_id =
+    { NULL, 0U, NULL, NULL, 0, NULL, 0, 0 };
+
+#define vpm_empty_id ((X509_VERIFY_PARAM_ID *)&_empty_id)
+
+/*
+ * Default verify parameters: these are used for various applications and can
+ * be overridden by the user specified table. NB: the 'name' field *must* be
+ * in alphabetical order because it will be searched using OBJ_search.
+ */
+
+static const X509_VERIFY_PARAM default_table[] = {
+    {
+     (char *)"default",         /* X509 default parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     0,                         /* purpose */
+     0,                         /* trust */
+     100,                       /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"pkcs7",           /* S/MIME sign parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SMIME_SIGN,   /* purpose */
+     X509_TRUST_EMAIL,          /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"smime_sign",      /* S/MIME sign parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SMIME_SIGN,   /* purpose */
+     X509_TRUST_EMAIL,          /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"ssl_client",      /* SSL/TLS client parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SSL_CLIENT,   /* purpose */
+     X509_TRUST_SSL_CLIENT,     /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"ssl_server",      /* SSL/TLS server parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SSL_SERVER,   /* purpose */
+     X509_TRUST_SSL_SERVER,     /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id}
+};
+
+static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
+
+static int param_cmp(const X509_VERIFY_PARAM **a, const X509_VERIFY_PARAM **b)
+{
+    return strcmp((*a)->name, (*b)->name);
+}
+
+int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
+{
+    X509_VERIFY_PARAM *ptmp;
+    if (!param_table) {
+        param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
+        if (!param_table)
+            return 0;
+    } else {
+        size_t idx;
+
+        sk_X509_VERIFY_PARAM_sort(param_table);
+        if (sk_X509_VERIFY_PARAM_find(param_table, &idx, param)) {
+            ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
+            X509_VERIFY_PARAM_free(ptmp);
+            (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
+        }
+    }
+    if (!sk_X509_VERIFY_PARAM_push(param_table, param))
+        return 0;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_get_count(void)
+{
+    int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    if (param_table)
+        num += sk_X509_VERIFY_PARAM_num(param_table);
+    return num;
+}
+
+const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
+{
+    int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    if (id < num)
+        return default_table + id;
+    return sk_X509_VERIFY_PARAM_value(param_table, id - num);
+}
+
+const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
+{
+    X509_VERIFY_PARAM pm;
+    unsigned i, limit;
+
+    pm.name = (char *)name;
+    if (param_table) {
+        size_t idx;
+        sk_X509_VERIFY_PARAM_sort(param_table);
+        if (sk_X509_VERIFY_PARAM_find(param_table, &idx, &pm))
+            return sk_X509_VERIFY_PARAM_value(param_table, idx);
+    }
+
+    limit = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    for (i = 0; i < limit; i++) {
+        if (strcmp(default_table[i].name, name) == 0) {
+            return &default_table[i];
+        }
+    }
+    return NULL;
+}
+
+void X509_VERIFY_PARAM_table_cleanup(void)
+{
+    if (param_table)
+        sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);
+    param_table = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c.grpc_back
new file mode 100644
index 0000000..d8d1efe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509_vpm.c.grpc_back	
@@ -0,0 +1,671 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "vpm_int.h"
+#include "../internal.h"
+
+
+/* X509_VERIFY_PARAM functions */
+
+#define SET_HOST 0
+#define ADD_HOST 1
+
+static char *str_copy(char *s)
+{
+    return OPENSSL_strdup(s);
+}
+
+static void str_free(char *s)
+{
+    OPENSSL_free(s);
+}
+
+#define string_stack_free(sk) sk_OPENSSL_STRING_pop_free(sk, str_free)
+
+static int int_x509_param_set_hosts(X509_VERIFY_PARAM_ID *id, int mode,
+                                    const char *name, size_t namelen)
+{
+    char *copy;
+
+    if (name == NULL || namelen == 0) {
+        // Unlike OpenSSL, we reject trying to set or add an empty name.
+        return 0;
+    }
+
+    /*
+     * Refuse names with embedded NUL bytes.
+     * XXX: Do we need to push an error onto the error stack?
+     */
+    if (name && OPENSSL_memchr(name, '\0', namelen))
+        return 0;
+
+    if (mode == SET_HOST && id->hosts) {
+        string_stack_free(id->hosts);
+        id->hosts = NULL;
+    }
+
+    copy = OPENSSL_strndup(name, namelen);
+    if (copy == NULL)
+        return 0;
+
+    if (id->hosts == NULL &&
+        (id->hosts = sk_OPENSSL_STRING_new_null()) == NULL) {
+        OPENSSL_free(copy);
+        return 0;
+    }
+
+    if (!sk_OPENSSL_STRING_push(id->hosts, copy)) {
+        OPENSSL_free(copy);
+        if (sk_OPENSSL_STRING_num(id->hosts) == 0) {
+            sk_OPENSSL_STRING_free(id->hosts);
+            id->hosts = NULL;
+        }
+        return 0;
+    }
+
+    return 1;
+}
+
+static void x509_verify_param_zero(X509_VERIFY_PARAM *param)
+{
+    X509_VERIFY_PARAM_ID *paramid;
+    if (!param)
+        return;
+    param->name = NULL;
+    param->purpose = 0;
+    param->trust = 0;
+    /*
+     * param->inh_flags = X509_VP_FLAG_DEFAULT;
+     */
+    param->inh_flags = 0;
+    param->flags = 0;
+    param->depth = -1;
+    if (param->policies) {
+        sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
+        param->policies = NULL;
+    }
+    paramid = param->id;
+    if (paramid->hosts) {
+        string_stack_free(paramid->hosts);
+        paramid->hosts = NULL;
+    }
+    if (paramid->peername) {
+        OPENSSL_free(paramid->peername);
+        paramid->peername = NULL;
+    }
+    if (paramid->email) {
+        OPENSSL_free(paramid->email);
+        paramid->email = NULL;
+        paramid->emaillen = 0;
+    }
+    if (paramid->ip) {
+        OPENSSL_free(paramid->ip);
+        paramid->ip = NULL;
+        paramid->iplen = 0;
+    }
+    paramid->poison = 0;
+}
+
+X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
+{
+    X509_VERIFY_PARAM *param;
+    X509_VERIFY_PARAM_ID *paramid;
+    param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
+    if (!param)
+        return NULL;
+    paramid = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM_ID));
+    if (!paramid) {
+        OPENSSL_free(param);
+        return NULL;
+    }
+    OPENSSL_memset(param, 0, sizeof(X509_VERIFY_PARAM));
+    OPENSSL_memset(paramid, 0, sizeof(X509_VERIFY_PARAM_ID));
+    param->id = paramid;
+    x509_verify_param_zero(param);
+    return param;
+}
+
+void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
+{
+    if (param == NULL)
+        return;
+    x509_verify_param_zero(param);
+    OPENSSL_free(param->id);
+    OPENSSL_free(param);
+}
+
+/*-
+ * This function determines how parameters are "inherited" from one structure
+ * to another. There are several different ways this can happen.
+ *
+ * 1. If a child structure needs to have its values initialized from a parent
+ *    they are simply copied across. For example SSL_CTX copied to SSL.
+ * 2. If the structure should take on values only if they are currently unset.
+ *    For example the values in an SSL structure will take appropriate value
+ *    for SSL servers or clients but only if the application has not set new
+ *    ones.
+ *
+ * The "inh_flags" field determines how this function behaves.
+ *
+ * Normally any values which are set in the default are not copied from the
+ * destination and verify flags are ORed together.
+ *
+ * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
+ * to the destination. Effectively the values in "to" become default values
+ * which will be used only if nothing new is set in "from".
+ *
+ * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
+ * they are set or not. Flags is still Ored though.
+ *
+ * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
+ * of ORed.
+ *
+ * If X509_VP_FLAG_LOCKED is set then no values are copied.
+ *
+ * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
+ * after the next call.
+ */
+
+/* Macro to test if a field should be copied from src to dest */
+
+#define test_x509_verify_param_copy(field, def) \
+  (to_overwrite ||                              \
+   ((src->field != (def)) && (to_default || (dest->field == (def)))))
+
+/* As above but for ID fields */
+
+#define test_x509_verify_param_copy_id(idf, def) \
+        test_x509_verify_param_copy(id->idf, def)
+
+/* Macro to test and copy a field if necessary */
+
+#define x509_verify_param_copy(field, def) \
+        if (test_x509_verify_param_copy(field, def)) \
+                dest->field = src->field
+
+int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,
+                              const X509_VERIFY_PARAM *src)
+{
+    unsigned long inh_flags;
+    int to_default, to_overwrite;
+    X509_VERIFY_PARAM_ID *id;
+    if (!src)
+        return 1;
+    id = src->id;
+    inh_flags = dest->inh_flags | src->inh_flags;
+
+    if (inh_flags & X509_VP_FLAG_ONCE)
+        dest->inh_flags = 0;
+
+    if (inh_flags & X509_VP_FLAG_LOCKED)
+        return 1;
+
+    if (inh_flags & X509_VP_FLAG_DEFAULT)
+        to_default = 1;
+    else
+        to_default = 0;
+
+    if (inh_flags & X509_VP_FLAG_OVERWRITE)
+        to_overwrite = 1;
+    else
+        to_overwrite = 0;
+
+    x509_verify_param_copy(purpose, 0);
+    x509_verify_param_copy(trust, 0);
+    x509_verify_param_copy(depth, -1);
+
+    /* If overwrite or check time not set, copy across */
+
+    if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME)) {
+        dest->check_time = src->check_time;
+        dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;
+        /* Don't need to copy flag: that is done below */
+    }
+
+    if (inh_flags & X509_VP_FLAG_RESET_FLAGS)
+        dest->flags = 0;
+
+    dest->flags |= src->flags;
+
+    if (test_x509_verify_param_copy(policies, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))
+            return 0;
+    }
+
+    /* Copy the host flags if and only if we're copying the host list */
+    if (test_x509_verify_param_copy_id(hosts, NULL)) {
+        if (dest->id->hosts) {
+            string_stack_free(dest->id->hosts);
+            dest->id->hosts = NULL;
+        }
+        if (id->hosts) {
+            dest->id->hosts =
+                sk_OPENSSL_STRING_deep_copy(id->hosts, str_copy, str_free);
+            if (dest->id->hosts == NULL)
+                return 0;
+            dest->id->hostflags = id->hostflags;
+        }
+    }
+
+    if (test_x509_verify_param_copy_id(email, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_email(dest, id->email, id->emaillen))
+            return 0;
+    }
+
+    if (test_x509_verify_param_copy_id(ip, NULL)) {
+        if (!X509_VERIFY_PARAM_set1_ip(dest, id->ip, id->iplen))
+            return 0;
+    }
+
+    dest->id->poison = src->id->poison;
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
+                           const X509_VERIFY_PARAM *from)
+{
+    unsigned long save_flags = to->inh_flags;
+    int ret;
+    to->inh_flags |= X509_VP_FLAG_DEFAULT;
+    ret = X509_VERIFY_PARAM_inherit(to, from);
+    to->inh_flags = save_flags;
+    return ret;
+}
+
+static int int_x509_param_set1(char **pdest, size_t *pdestlen,
+                               const char *src, size_t srclen)
+{
+    void *tmp;
+    if (src == NULL || srclen == 0) {
+        // Unlike OpenSSL, we do not allow an empty string to disable previously
+        // configured checks.
+        return 0;
+    }
+
+    tmp = OPENSSL_memdup(src, srclen);
+    if (!tmp) {
+        return 0;
+    }
+
+    if (*pdest)
+        OPENSSL_free(*pdest);
+    *pdest = tmp;
+    if (pdestlen)
+        *pdestlen = srclen;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)
+{
+    if (param->name)
+        OPENSSL_free(param->name);
+    param->name = OPENSSL_strdup(name);
+    if (param->name)
+        return 1;
+    return 0;
+}
+
+int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)
+{
+    param->flags |= flags;
+    if (flags & X509_V_FLAG_POLICY_MASK)
+        param->flags |= X509_V_FLAG_POLICY_CHECK;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+                                  unsigned long flags)
+{
+    param->flags &= ~flags;
+    return 1;
+}
+
+unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)
+{
+    return param->flags;
+}
+
+int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)
+{
+    return X509_PURPOSE_set(&param->purpose, purpose);
+}
+
+int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)
+{
+    return X509_TRUST_set(&param->trust, trust);
+}
+
+void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)
+{
+    param->depth = depth;
+}
+
+void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)
+{
+    param->check_time = t;
+    param->flags |= X509_V_FLAG_USE_CHECK_TIME;
+}
+
+int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+                                  ASN1_OBJECT *policy)
+{
+    if (!param->policies) {
+        param->policies = sk_ASN1_OBJECT_new_null();
+        if (!param->policies)
+            return 0;
+    }
+    if (!sk_ASN1_OBJECT_push(param->policies, policy))
+        return 0;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
+                                    STACK_OF(ASN1_OBJECT) *policies)
+{
+    size_t i;
+    ASN1_OBJECT *oid, *doid;
+    if (!param)
+        return 0;
+    if (param->policies)
+        sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);
+
+    if (!policies) {
+        param->policies = NULL;
+        return 1;
+    }
+
+    param->policies = sk_ASN1_OBJECT_new_null();
+    if (!param->policies)
+        return 0;
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++) {
+        oid = sk_ASN1_OBJECT_value(policies, i);
+        doid = OBJ_dup(oid);
+        if (!doid)
+            return 0;
+        if (!sk_ASN1_OBJECT_push(param->policies, doid)) {
+            ASN1_OBJECT_free(doid);
+            return 0;
+        }
+    }
+    param->flags |= X509_V_FLAG_POLICY_CHECK;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+                                const char *name, size_t namelen)
+{
+    if (!int_x509_param_set_hosts(param->id, SET_HOST, name, namelen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+    return 1;
+}
+
+int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+                                const char *name, size_t namelen)
+{
+    if (!int_x509_param_set_hosts(param->id, ADD_HOST, name, namelen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+    return 1;
+}
+
+void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+                                     unsigned int flags)
+{
+    param->id->hostflags = flags;
+}
+
+char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param)
+{
+    return param->id->peername;
+}
+
+int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+                                 const char *email, size_t emaillen)
+{
+    if (OPENSSL_memchr(email, '\0', emaillen) != NULL ||
+        !int_x509_param_set1(&param->id->email, &param->id->emaillen,
+                               email, emaillen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+                              const unsigned char *ip, size_t iplen)
+{
+    if ((iplen != 4 && iplen != 16) ||
+        !int_x509_param_set1((char **)&param->id->ip, &param->id->iplen,
+                             (char *)ip, iplen)) {
+        param->id->poison = 1;
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc)
+{
+    unsigned char ipout[16];
+    size_t iplen;
+
+    iplen = (size_t)a2i_ipadd(ipout, ipasc);
+    if (iplen == 0)
+        return 0;
+    return X509_VERIFY_PARAM_set1_ip(param, ipout, iplen);
+}
+
+int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)
+{
+    return param->depth;
+}
+
+const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param)
+{
+    return param->name;
+}
+
+static const X509_VERIFY_PARAM_ID _empty_id =
+    { NULL, 0U, NULL, NULL, 0, NULL, 0, 0 };
+
+#define vpm_empty_id ((X509_VERIFY_PARAM_ID *)&_empty_id)
+
+/*
+ * Default verify parameters: these are used for various applications and can
+ * be overridden by the user specified table. NB: the 'name' field *must* be
+ * in alphabetical order because it will be searched using OBJ_search.
+ */
+
+static const X509_VERIFY_PARAM default_table[] = {
+    {
+     (char *)"default",         /* X509 default parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     0,                         /* purpose */
+     0,                         /* trust */
+     100,                       /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"pkcs7",           /* S/MIME sign parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SMIME_SIGN,   /* purpose */
+     X509_TRUST_EMAIL,          /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"smime_sign",      /* S/MIME sign parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SMIME_SIGN,   /* purpose */
+     X509_TRUST_EMAIL,          /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"ssl_client",      /* SSL/TLS client parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SSL_CLIENT,   /* purpose */
+     X509_TRUST_SSL_CLIENT,     /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id},
+    {
+     (char *)"ssl_server",      /* SSL/TLS server parameters */
+     0,                         /* Check time */
+     0,                         /* internal flags */
+     0,                         /* flags */
+     X509_PURPOSE_SSL_SERVER,   /* purpose */
+     X509_TRUST_SSL_SERVER,     /* trust */
+     -1,                        /* depth */
+     NULL,                      /* policies */
+     vpm_empty_id}
+};
+
+static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;
+
+static int param_cmp(const X509_VERIFY_PARAM **a, const X509_VERIFY_PARAM **b)
+{
+    return strcmp((*a)->name, (*b)->name);
+}
+
+int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)
+{
+    X509_VERIFY_PARAM *ptmp;
+    if (!param_table) {
+        param_table = sk_X509_VERIFY_PARAM_new(param_cmp);
+        if (!param_table)
+            return 0;
+    } else {
+        size_t idx;
+
+        sk_X509_VERIFY_PARAM_sort(param_table);
+        if (sk_X509_VERIFY_PARAM_find(param_table, &idx, param)) {
+            ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);
+            X509_VERIFY_PARAM_free(ptmp);
+            (void)sk_X509_VERIFY_PARAM_delete(param_table, idx);
+        }
+    }
+    if (!sk_X509_VERIFY_PARAM_push(param_table, param))
+        return 0;
+    return 1;
+}
+
+int X509_VERIFY_PARAM_get_count(void)
+{
+    int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    if (param_table)
+        num += sk_X509_VERIFY_PARAM_num(param_table);
+    return num;
+}
+
+const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id)
+{
+    int num = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    if (id < num)
+        return default_table + id;
+    return sk_X509_VERIFY_PARAM_value(param_table, id - num);
+}
+
+const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)
+{
+    X509_VERIFY_PARAM pm;
+    unsigned i, limit;
+
+    pm.name = (char *)name;
+    if (param_table) {
+        size_t idx;
+        sk_X509_VERIFY_PARAM_sort(param_table);
+        if (sk_X509_VERIFY_PARAM_find(param_table, &idx, &pm))
+            return sk_X509_VERIFY_PARAM_value(param_table, idx);
+    }
+
+    limit = sizeof(default_table) / sizeof(X509_VERIFY_PARAM);
+    for (i = 0; i < limit; i++) {
+        if (strcmp(default_table[i].name, name) == 0) {
+            return &default_table[i];
+        }
+    }
+    return NULL;
+}
+
+void X509_VERIFY_PARAM_table_cleanup(void)
+{
+    if (param_table)
+        sk_X509_VERIFY_PARAM_pop_free(param_table, X509_VERIFY_PARAM_free);
+    param_table = NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c
new file mode 100644
index 0000000..d42b423
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c	
@@ -0,0 +1,210 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+#include "../internal.h"
+
+int X509_CRL_set_version(X509_CRL *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    if (x->crl->version == NULL) {
+        if ((x->crl->version = M_ASN1_INTEGER_new()) == NULL)
+            return (0);
+    }
+    return (ASN1_INTEGER_set(x->crl->version, version));
+}
+
+int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->crl == NULL))
+        return (0);
+    return (X509_NAME_set(&x->crl->issuer, name));
+}
+
+int X509_CRL_set_lastUpdate(X509_CRL *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->crl->lastUpdate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->crl->lastUpdate);
+            x->crl->lastUpdate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_CRL_set_nextUpdate(X509_CRL *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->crl->nextUpdate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->crl->nextUpdate);
+            x->crl->nextUpdate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_CRL_sort(X509_CRL *c)
+{
+    size_t i;
+    X509_REVOKED *r;
+    /*
+     * sort the data so it will be written in serial number order
+     */
+    sk_X509_REVOKED_sort(c->crl->revoked);
+    for (i = 0; i < sk_X509_REVOKED_num(c->crl->revoked); i++) {
+        r = sk_X509_REVOKED_value(c->crl->revoked, i);
+        r->sequence = i;
+    }
+    c->crl->enc.modified = 1;
+    return 1;
+}
+
+int X509_CRL_up_ref(X509_CRL *crl)
+{
+    CRYPTO_refcount_inc(&crl->references);
+    return 1;
+}
+
+const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl)
+{
+    return crl->crl->lastUpdate;
+}
+
+const ASN1_TIME *X509_CRL_get0_nextUpdate(const X509_CRL *crl)
+{
+    return crl->crl->nextUpdate;
+}
+
+void X509_CRL_get0_signature(const X509_CRL *crl, const ASN1_BIT_STRING **psig,
+                             const X509_ALGOR **palg)
+{
+    if (psig != NULL)
+        *psig = crl->signature;
+    if (palg != NULL)
+        *palg = crl->sig_alg;
+}
+
+int X509_CRL_get_signature_nid(const X509_CRL *crl)
+{
+    return OBJ_obj2nid(crl->sig_alg->algorithm);
+}
+
+const ASN1_TIME *X509_REVOKED_get0_revocationDate(const X509_REVOKED *x)
+{
+    return x->revocationDate;
+}
+
+int X509_REVOKED_set_revocationDate(X509_REVOKED *x, ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->revocationDate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->revocationDate);
+            x->revocationDate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_INTEGER *X509_REVOKED_get0_serialNumber(const X509_REVOKED *x)
+{
+    return x->serialNumber;
+}
+
+int X509_REVOKED_set_serialNumber(X509_REVOKED *x, ASN1_INTEGER *serial)
+{
+    ASN1_INTEGER *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->serialNumber;
+    if (in != serial) {
+        in = M_ASN1_INTEGER_dup(serial);
+        if (in != NULL) {
+            M_ASN1_INTEGER_free(x->serialNumber);
+            x->serialNumber = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int i2d_re_X509_CRL_tbs(X509_CRL *crl, unsigned char **pp)
+{
+    crl->crl->enc.modified = 1;
+    return i2d_X509_CRL_INFO(crl->crl, pp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c.grpc_back
new file mode 100644
index 0000000..6f2708c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509cset.c.grpc_back	
@@ -0,0 +1,210 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/asn1.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+#include "../internal.h"
+
+int X509_CRL_set_version(X509_CRL *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    if (x->crl->version == NULL) {
+        if ((x->crl->version = M_ASN1_INTEGER_new()) == NULL)
+            return (0);
+    }
+    return (ASN1_INTEGER_set(x->crl->version, version));
+}
+
+int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->crl == NULL))
+        return (0);
+    return (X509_NAME_set(&x->crl->issuer, name));
+}
+
+int X509_CRL_set_lastUpdate(X509_CRL *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->crl->lastUpdate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->crl->lastUpdate);
+            x->crl->lastUpdate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_CRL_set_nextUpdate(X509_CRL *x, const ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->crl->nextUpdate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->crl->nextUpdate);
+            x->crl->nextUpdate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int X509_CRL_sort(X509_CRL *c)
+{
+    size_t i;
+    X509_REVOKED *r;
+    /*
+     * sort the data so it will be written in serial number order
+     */
+    sk_X509_REVOKED_sort(c->crl->revoked);
+    for (i = 0; i < sk_X509_REVOKED_num(c->crl->revoked); i++) {
+        r = sk_X509_REVOKED_value(c->crl->revoked, i);
+        r->sequence = i;
+    }
+    c->crl->enc.modified = 1;
+    return 1;
+}
+
+int X509_CRL_up_ref(X509_CRL *crl)
+{
+    CRYPTO_refcount_inc(&crl->references);
+    return 1;
+}
+
+const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl)
+{
+    return crl->crl->lastUpdate;
+}
+
+const ASN1_TIME *X509_CRL_get0_nextUpdate(const X509_CRL *crl)
+{
+    return crl->crl->nextUpdate;
+}
+
+void X509_CRL_get0_signature(const X509_CRL *crl, const ASN1_BIT_STRING **psig,
+                             const X509_ALGOR **palg)
+{
+    if (psig != NULL)
+        *psig = crl->signature;
+    if (palg != NULL)
+        *palg = crl->sig_alg;
+}
+
+int X509_CRL_get_signature_nid(const X509_CRL *crl)
+{
+    return OBJ_obj2nid(crl->sig_alg->algorithm);
+}
+
+const ASN1_TIME *X509_REVOKED_get0_revocationDate(const X509_REVOKED *x)
+{
+    return x->revocationDate;
+}
+
+int X509_REVOKED_set_revocationDate(X509_REVOKED *x, ASN1_TIME *tm)
+{
+    ASN1_TIME *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->revocationDate;
+    if (in != tm) {
+        in = M_ASN1_TIME_dup(tm);
+        if (in != NULL) {
+            M_ASN1_TIME_free(x->revocationDate);
+            x->revocationDate = in;
+        }
+    }
+    return (in != NULL);
+}
+
+const ASN1_INTEGER *X509_REVOKED_get0_serialNumber(const X509_REVOKED *x)
+{
+    return x->serialNumber;
+}
+
+int X509_REVOKED_set_serialNumber(X509_REVOKED *x, ASN1_INTEGER *serial)
+{
+    ASN1_INTEGER *in;
+
+    if (x == NULL)
+        return (0);
+    in = x->serialNumber;
+    if (in != serial) {
+        in = M_ASN1_INTEGER_dup(serial);
+        if (in != NULL) {
+            M_ASN1_INTEGER_free(x->serialNumber);
+            x->serialNumber = in;
+        }
+    }
+    return (in != NULL);
+}
+
+int i2d_re_X509_CRL_tbs(X509_CRL *crl, unsigned char **pp)
+{
+    crl->crl->enc.modified = 1;
+    return i2d_X509_CRL_INFO(crl->crl, pp);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c
new file mode 100644
index 0000000..2f758bb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c	
@@ -0,0 +1,388 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+#include "../internal.h"
+
+
+int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-1);
+    return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
+}
+
+int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+                              char *buf, int len)
+{
+    int i;
+    ASN1_STRING *data;
+
+    i = X509_NAME_get_index_by_OBJ(name, obj, -1);
+    if (i < 0)
+        return (-1);
+    data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
+    i = (data->length > (len - 1)) ? (len - 1) : data->length;
+    if (buf == NULL)
+        return (data->length);
+    OPENSSL_memcpy(buf, data->data, i);
+    buf[i] = '\0';
+    return (i);
+}
+
+int X509_NAME_entry_count(X509_NAME *name)
+{
+    if (name == NULL)
+        return (0);
+    return (sk_X509_NAME_ENTRY_num(name->entries));
+}
+
+int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
+}
+
+/* NOTE: you should be passsing -1, not 0 as lastpos */
+int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+                               int lastpos)
+{
+    int n;
+    X509_NAME_ENTRY *ne;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL)
+        return (-1);
+    if (lastpos < 0)
+        lastpos = -1;
+    sk = name->entries;
+    n = sk_X509_NAME_ENTRY_num(sk);
+    for (lastpos++; lastpos < n; lastpos++) {
+        ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
+        if (OBJ_cmp(ne->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
+{
+    if (name == NULL || loc < 0
+        || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
+        return (NULL);
+    else
+        return (sk_X509_NAME_ENTRY_value(name->entries, loc));
+}
+
+X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
+{
+    X509_NAME_ENTRY *ret;
+    int i, n, set_prev, set_next;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL || loc < 0
+        || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
+        return (NULL);
+    sk = name->entries;
+    ret = sk_X509_NAME_ENTRY_delete(sk, loc);
+    n = sk_X509_NAME_ENTRY_num(sk);
+    name->modified = 1;
+    if (loc == n)
+        return (ret);
+
+    /* else we need to fixup the set field */
+    if (loc != 0)
+        set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
+    else
+        set_prev = ret->set - 1;
+    set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
+
+    /*
+     * set_prev is the previous set set is the current set set_next is the
+     * following prev 1 1 1 1 1 1 1 1 set 1 1 2 2 next 1 1 2 2 2 2 3 2 so
+     * basically only if prev and next differ by 2, then re-number down by 1
+     */
+    if (set_prev + 1 < set_next)
+        for (i = loc; i < n; i++)
+            sk_X509_NAME_ENTRY_value(sk, i)->set--;
+    return (ret);
+}
+
+int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
+                               unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
+                               unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
+                               const unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+/*
+ * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
+ * guy we are about to stomp on.
+ */
+int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
+                        int set)
+{
+    X509_NAME_ENTRY *new_name = NULL;
+    int n, i, inc;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL)
+        return (0);
+    sk = name->entries;
+    n = sk_X509_NAME_ENTRY_num(sk);
+    if (loc > n)
+        loc = n;
+    else if (loc < 0)
+        loc = n;
+
+    inc = (set == 0);
+    name->modified = 1;
+
+    if (set == -1) {
+        if (loc == 0) {
+            set = 0;
+            inc = 1;
+        } else {
+            set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
+        }
+    } else {                    /* if (set >= 0) */
+
+        if (loc >= n) {
+            if (loc != 0)
+                set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
+            else
+                set = 0;
+        } else
+            set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
+    }
+
+    if ((new_name = X509_NAME_ENTRY_dup(ne)) == NULL)
+        goto err;
+    new_name->set = set;
+    if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    if (inc) {
+        n = sk_X509_NAME_ENTRY_num(sk);
+        for (i = loc + 1; i < n; i++)
+            sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
+    }
+    return (1);
+ err:
+    if (new_name != NULL)
+        X509_NAME_ENTRY_free(new_name);
+    return (0);
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
+                                               const char *field, int type,
+                                               const unsigned char *bytes,
+                                               int len)
+{
+    ASN1_OBJECT *obj;
+    X509_NAME_ENTRY *nentry;
+
+    obj = OBJ_txt2obj(field, 0);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
+        ERR_add_error_data(2, "name=", field);
+        return (NULL);
+    }
+    nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
+    ASN1_OBJECT_free(obj);
+    return nentry;
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
+                                               int type, unsigned char *bytes,
+                                               int len)
+{
+    const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return NULL;
+    }
+    return X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
+                                               const ASN1_OBJECT *obj,
+                                               int type,
+                                               const unsigned char *bytes,
+                                               int len)
+{
+    X509_NAME_ENTRY *ret;
+
+    if ((ne == NULL) || (*ne == NULL)) {
+        if ((ret = X509_NAME_ENTRY_new()) == NULL)
+            return (NULL);
+    } else
+        ret = *ne;
+
+    if (!X509_NAME_ENTRY_set_object(ret, obj))
+        goto err;
+    if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
+        goto err;
+
+    if ((ne != NULL) && (*ne == NULL))
+        *ne = ret;
+    return (ret);
+ err:
+    if ((ne == NULL) || (ret != *ne))
+        X509_NAME_ENTRY_free(ret);
+    return (NULL);
+}
+
+int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
+{
+    if ((ne == NULL) || (obj == NULL)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        return (0);
+    }
+    ASN1_OBJECT_free(ne->object);
+    ne->object = OBJ_dup(obj);
+    return ((ne->object == NULL) ? 0 : 1);
+}
+
+int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
+                             const unsigned char *bytes, int len)
+{
+    int i;
+
+    if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
+        return (0);
+    if ((type > 0) && (type & MBSTRING_FLAG))
+        return ASN1_STRING_set_by_NID(&ne->value, bytes,
+                                      len, type,
+                                      OBJ_obj2nid(ne->object)) ? 1 : 0;
+    if (len < 0)
+        len = strlen((const char *)bytes);
+    i = ASN1_STRING_set(ne->value, bytes, len);
+    if (!i)
+        return (0);
+    if (type != V_ASN1_UNDEF) {
+        if (type == V_ASN1_APP_CHOOSE)
+            ne->value->type = ASN1_PRINTABLE_type(bytes, len);
+        else
+            ne->value->type = type;
+    }
+    return (1);
+}
+
+ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
+{
+    if (ne == NULL)
+        return (NULL);
+    return (ne->object);
+}
+
+ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
+{
+    if (ne == NULL)
+        return (NULL);
+    return (ne->value);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c.grpc_back
new file mode 100644
index 0000000..fa621f2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509name.c.grpc_back	
@@ -0,0 +1,388 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+#include "../internal.h"
+
+
+int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-1);
+    return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
+}
+
+int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+                              char *buf, int len)
+{
+    int i;
+    ASN1_STRING *data;
+
+    i = X509_NAME_get_index_by_OBJ(name, obj, -1);
+    if (i < 0)
+        return (-1);
+    data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
+    i = (data->length > (len - 1)) ? (len - 1) : data->length;
+    if (buf == NULL)
+        return (data->length);
+    OPENSSL_memcpy(buf, data->data, i);
+    buf[i] = '\0';
+    return (i);
+}
+
+int X509_NAME_entry_count(X509_NAME *name)
+{
+    if (name == NULL)
+        return (0);
+    return (sk_X509_NAME_ENTRY_num(name->entries));
+}
+
+int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
+{
+    const ASN1_OBJECT *obj;
+
+    obj = OBJ_nid2obj(nid);
+    if (obj == NULL)
+        return (-2);
+    return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
+}
+
+/* NOTE: you should be passsing -1, not 0 as lastpos */
+int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+                               int lastpos)
+{
+    int n;
+    X509_NAME_ENTRY *ne;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL)
+        return (-1);
+    if (lastpos < 0)
+        lastpos = -1;
+    sk = name->entries;
+    n = sk_X509_NAME_ENTRY_num(sk);
+    for (lastpos++; lastpos < n; lastpos++) {
+        ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
+        if (OBJ_cmp(ne->object, obj) == 0)
+            return (lastpos);
+    }
+    return (-1);
+}
+
+X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc)
+{
+    if (name == NULL || loc < 0
+        || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
+        return (NULL);
+    else
+        return (sk_X509_NAME_ENTRY_value(name->entries, loc));
+}
+
+X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
+{
+    X509_NAME_ENTRY *ret;
+    int i, n, set_prev, set_next;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL || loc < 0
+        || sk_X509_NAME_ENTRY_num(name->entries) <= (size_t)loc)
+        return (NULL);
+    sk = name->entries;
+    ret = sk_X509_NAME_ENTRY_delete(sk, loc);
+    n = sk_X509_NAME_ENTRY_num(sk);
+    name->modified = 1;
+    if (loc == n)
+        return (ret);
+
+    /* else we need to fixup the set field */
+    if (loc != 0)
+        set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
+    else
+        set_prev = ret->set - 1;
+    set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
+
+    /*
+     * set_prev is the previous set set is the current set set_next is the
+     * following prev 1 1 1 1 1 1 1 1 set 1 1 2 2 next 1 1 2 2 2 2 3 2 so
+     * basically only if prev and next differ by 2, then re-number down by 1
+     */
+    if (set_prev + 1 < set_next)
+        for (i = loc; i < n; i++)
+            sk_X509_NAME_ENTRY_value(sk, i)->set--;
+    return (ret);
+}
+
+int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
+                               unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
+                               unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
+                               const unsigned char *bytes, int len, int loc,
+                               int set)
+{
+    X509_NAME_ENTRY *ne;
+    int ret;
+    ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
+    if (!ne)
+        return 0;
+    ret = X509_NAME_add_entry(name, ne, loc, set);
+    X509_NAME_ENTRY_free(ne);
+    return ret;
+}
+
+/*
+ * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
+ * guy we are about to stomp on.
+ */
+int X509_NAME_add_entry(X509_NAME *name, X509_NAME_ENTRY *ne, int loc,
+                        int set)
+{
+    X509_NAME_ENTRY *new_name = NULL;
+    int n, i, inc;
+    STACK_OF(X509_NAME_ENTRY) *sk;
+
+    if (name == NULL)
+        return (0);
+    sk = name->entries;
+    n = sk_X509_NAME_ENTRY_num(sk);
+    if (loc > n)
+        loc = n;
+    else if (loc < 0)
+        loc = n;
+
+    inc = (set == 0);
+    name->modified = 1;
+
+    if (set == -1) {
+        if (loc == 0) {
+            set = 0;
+            inc = 1;
+        } else {
+            set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
+        }
+    } else {                    /* if (set >= 0) */
+
+        if (loc >= n) {
+            if (loc != 0)
+                set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
+            else
+                set = 0;
+        } else
+            set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
+    }
+
+    if ((new_name = X509_NAME_ENTRY_dup(ne)) == NULL)
+        goto err;
+    new_name->set = set;
+    if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    if (inc) {
+        n = sk_X509_NAME_ENTRY_num(sk);
+        for (i = loc + 1; i < n; i++)
+            sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
+    }
+    return (1);
+ err:
+    if (new_name != NULL)
+        X509_NAME_ENTRY_free(new_name);
+    return (0);
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
+                                               const char *field, int type,
+                                               const unsigned char *bytes,
+                                               int len)
+{
+    ASN1_OBJECT *obj;
+    X509_NAME_ENTRY *nentry;
+
+    obj = OBJ_txt2obj(field, 0);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
+        ERR_add_error_data(2, "name=", field);
+        return (NULL);
+    }
+    nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
+    ASN1_OBJECT_free(obj);
+    return nentry;
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
+                                               int type, unsigned char *bytes,
+                                               int len)
+{
+    const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
+    if (obj == NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
+        return NULL;
+    }
+    return X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
+}
+
+X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
+                                               const ASN1_OBJECT *obj,
+                                               int type,
+                                               const unsigned char *bytes,
+                                               int len)
+{
+    X509_NAME_ENTRY *ret;
+
+    if ((ne == NULL) || (*ne == NULL)) {
+        if ((ret = X509_NAME_ENTRY_new()) == NULL)
+            return (NULL);
+    } else
+        ret = *ne;
+
+    if (!X509_NAME_ENTRY_set_object(ret, obj))
+        goto err;
+    if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
+        goto err;
+
+    if ((ne != NULL) && (*ne == NULL))
+        *ne = ret;
+    return (ret);
+ err:
+    if ((ne == NULL) || (ret != *ne))
+        X509_NAME_ENTRY_free(ret);
+    return (NULL);
+}
+
+int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
+{
+    if ((ne == NULL) || (obj == NULL)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
+        return (0);
+    }
+    ASN1_OBJECT_free(ne->object);
+    ne->object = OBJ_dup(obj);
+    return ((ne->object == NULL) ? 0 : 1);
+}
+
+int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
+                             const unsigned char *bytes, int len)
+{
+    int i;
+
+    if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
+        return (0);
+    if ((type > 0) && (type & MBSTRING_FLAG))
+        return ASN1_STRING_set_by_NID(&ne->value, bytes,
+                                      len, type,
+                                      OBJ_obj2nid(ne->object)) ? 1 : 0;
+    if (len < 0)
+        len = strlen((const char *)bytes);
+    i = ASN1_STRING_set(ne->value, bytes, len);
+    if (!i)
+        return (0);
+    if (type != V_ASN1_UNDEF) {
+        if (type == V_ASN1_APP_CHOOSE)
+            ne->value->type = ASN1_PRINTABLE_type(bytes, len);
+        else
+            ne->value->type = type;
+    }
+    return (1);
+}
+
+ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne)
+{
+    if (ne == NULL)
+        return (NULL);
+    return (ne->object);
+}
+
+ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne)
+{
+    if (ne == NULL)
+        return (NULL);
+    return (ne->value);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c
new file mode 100644
index 0000000..d364ede
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c	
@@ -0,0 +1,81 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+int X509_REQ_set_version(X509_REQ *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    return (ASN1_INTEGER_set(x->req_info->version, version));
+}
+
+int X509_REQ_set_subject_name(X509_REQ *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->req_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->req_info->subject, name));
+}
+
+int X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->req_info == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&x->req_info->pubkey, pkey));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c.grpc_back
new file mode 100644
index 0000000..c4e6683
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509rset.c.grpc_back	
@@ -0,0 +1,81 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+int X509_REQ_set_version(X509_REQ *x, long version)
+{
+    if (x == NULL)
+        return (0);
+    return (ASN1_INTEGER_set(x->req_info->version, version));
+}
+
+int X509_REQ_set_subject_name(X509_REQ *x, X509_NAME *name)
+{
+    if ((x == NULL) || (x->req_info == NULL))
+        return (0);
+    return (X509_NAME_set(&x->req_info->subject, name));
+}
+
+int X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->req_info == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&x->req_info->pubkey, pkey));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c
new file mode 100644
index 0000000..2df5ef6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c	
@@ -0,0 +1,137 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <string.h>
+
+#include <openssl_grpc/base64.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/x509.h>
+
+int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->spkac == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&(x->spkac->pubkey), pkey));
+}
+
+EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
+{
+    if ((x == NULL) || (x->spkac == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(x->spkac->pubkey));
+}
+
+/* Load a Netscape SPKI from a base64 encoded string */
+
+NETSCAPE_SPKI *NETSCAPE_SPKI_b64_decode(const char *str, int len)
+{
+    unsigned char *spki_der;
+    const unsigned char *p;
+    size_t spki_len;
+    NETSCAPE_SPKI *spki;
+    if (len <= 0)
+        len = strlen(str);
+    if (!EVP_DecodedLength(&spki_len, len)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
+        return NULL;
+    }
+    if (!(spki_der = OPENSSL_malloc(spki_len))) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    if (!EVP_DecodeBase64
+        (spki_der, &spki_len, spki_len, (const uint8_t *)str, len)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
+        OPENSSL_free(spki_der);
+        return NULL;
+    }
+    p = spki_der;
+    spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
+    OPENSSL_free(spki_der);
+    return spki;
+}
+
+/* Generate a base64 encoded string from an SPKI */
+
+char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
+{
+    unsigned char *der_spki, *p;
+    char *b64_str;
+    size_t b64_len;
+    int der_len;
+    der_len = i2d_NETSCAPE_SPKI(spki, NULL);
+    if (!EVP_EncodedLength(&b64_len, der_len)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_OVERFLOW);
+        return NULL;
+    }
+    der_spki = OPENSSL_malloc(der_len);
+    if (der_spki == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    b64_str = OPENSSL_malloc(b64_len);
+    if (b64_str == NULL) {
+        OPENSSL_free(der_spki);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    p = der_spki;
+    i2d_NETSCAPE_SPKI(spki, &p);
+    EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
+    OPENSSL_free(der_spki);
+    return b64_str;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c.grpc_back
new file mode 100644
index 0000000..4a9b95e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x509spki.c.grpc_back	
@@ -0,0 +1,137 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <string.h>
+
+#include <openssl/base64.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/x509.h>
+
+int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
+{
+    if ((x == NULL) || (x->spkac == NULL))
+        return (0);
+    return (X509_PUBKEY_set(&(x->spkac->pubkey), pkey));
+}
+
+EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
+{
+    if ((x == NULL) || (x->spkac == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(x->spkac->pubkey));
+}
+
+/* Load a Netscape SPKI from a base64 encoded string */
+
+NETSCAPE_SPKI *NETSCAPE_SPKI_b64_decode(const char *str, int len)
+{
+    unsigned char *spki_der;
+    const unsigned char *p;
+    size_t spki_len;
+    NETSCAPE_SPKI *spki;
+    if (len <= 0)
+        len = strlen(str);
+    if (!EVP_DecodedLength(&spki_len, len)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
+        return NULL;
+    }
+    if (!(spki_der = OPENSSL_malloc(spki_len))) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    if (!EVP_DecodeBase64
+        (spki_der, &spki_len, spki_len, (const uint8_t *)str, len)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
+        OPENSSL_free(spki_der);
+        return NULL;
+    }
+    p = spki_der;
+    spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
+    OPENSSL_free(spki_der);
+    return spki;
+}
+
+/* Generate a base64 encoded string from an SPKI */
+
+char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
+{
+    unsigned char *der_spki, *p;
+    char *b64_str;
+    size_t b64_len;
+    int der_len;
+    der_len = i2d_NETSCAPE_SPKI(spki, NULL);
+    if (!EVP_EncodedLength(&b64_len, der_len)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_OVERFLOW);
+        return NULL;
+    }
+    der_spki = OPENSSL_malloc(der_len);
+    if (der_spki == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    b64_str = OPENSSL_malloc(b64_len);
+    if (b64_str == NULL) {
+        OPENSSL_free(der_spki);
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    p = der_spki;
+    i2d_NETSCAPE_SPKI(spki, &p);
+    EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
+    OPENSSL_free(der_spki);
+    return b64_str;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c
new file mode 100644
index 0000000..8863b78
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c	
@@ -0,0 +1,151 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/x509.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/obj.h>
+
+
+ASN1_SEQUENCE(X509_ALGOR) = {
+        ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
+        ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
+} ASN1_SEQUENCE_END(X509_ALGOR)
+
+ASN1_ITEM_TEMPLATE(X509_ALGORS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
+ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
+
+IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
+
+int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype,
+                    void *pval)
+{
+    if (!alg)
+        return 0;
+    if (ptype != V_ASN1_UNDEF) {
+        if (alg->parameter == NULL)
+            alg->parameter = ASN1_TYPE_new();
+        if (alg->parameter == NULL)
+            return 0;
+    }
+    if (alg) {
+        if (alg->algorithm)
+            ASN1_OBJECT_free(alg->algorithm);
+        alg->algorithm = (ASN1_OBJECT *)aobj;
+    }
+    if (ptype == 0)
+        return 1;
+    if (ptype == V_ASN1_UNDEF) {
+        if (alg->parameter) {
+            ASN1_TYPE_free(alg->parameter);
+            alg->parameter = NULL;
+        }
+    } else
+        ASN1_TYPE_set(alg->parameter, ptype, pval);
+    return 1;
+}
+
+void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype, const void **ppval,
+                     const X509_ALGOR *algor)
+{
+    if (paobj)
+        *paobj = algor->algorithm;
+    if (pptype) {
+        if (algor->parameter == NULL) {
+            *pptype = V_ASN1_UNDEF;
+            return;
+        } else
+            *pptype = algor->parameter->type;
+        if (ppval)
+            *ppval = algor->parameter->value.ptr;
+    }
+}
+
+/* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
+
+void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
+{
+    int param_type;
+
+    if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT)
+        param_type = V_ASN1_UNDEF;
+    else
+        param_type = V_ASN1_NULL;
+
+    X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
+
+}
+
+/*
+ * X509_ALGOR_cmp returns 0 if |a| and |b| are equal and non-zero otherwise.
+ */
+int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
+{
+    int rv;
+    rv = OBJ_cmp(a->algorithm, b->algorithm);
+    if (rv)
+        return rv;
+    if (!a->parameter && !b->parameter)
+        return 0;
+    return ASN1_TYPE_cmp(a->parameter, b->parameter);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c.grpc_back
new file mode 100644
index 0000000..13c9a8c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_algor.c.grpc_back	
@@ -0,0 +1,151 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/x509.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/digest.h>
+#include <openssl/obj.h>
+
+
+ASN1_SEQUENCE(X509_ALGOR) = {
+        ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
+        ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
+} ASN1_SEQUENCE_END(X509_ALGOR)
+
+ASN1_ITEM_TEMPLATE(X509_ALGORS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
+ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
+
+IMPLEMENT_ASN1_SET_OF(X509_ALGOR)
+
+int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype,
+                    void *pval)
+{
+    if (!alg)
+        return 0;
+    if (ptype != V_ASN1_UNDEF) {
+        if (alg->parameter == NULL)
+            alg->parameter = ASN1_TYPE_new();
+        if (alg->parameter == NULL)
+            return 0;
+    }
+    if (alg) {
+        if (alg->algorithm)
+            ASN1_OBJECT_free(alg->algorithm);
+        alg->algorithm = (ASN1_OBJECT *)aobj;
+    }
+    if (ptype == 0)
+        return 1;
+    if (ptype == V_ASN1_UNDEF) {
+        if (alg->parameter) {
+            ASN1_TYPE_free(alg->parameter);
+            alg->parameter = NULL;
+        }
+    } else
+        ASN1_TYPE_set(alg->parameter, ptype, pval);
+    return 1;
+}
+
+void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype, const void **ppval,
+                     const X509_ALGOR *algor)
+{
+    if (paobj)
+        *paobj = algor->algorithm;
+    if (pptype) {
+        if (algor->parameter == NULL) {
+            *pptype = V_ASN1_UNDEF;
+            return;
+        } else
+            *pptype = algor->parameter->type;
+        if (ppval)
+            *ppval = algor->parameter->value.ptr;
+    }
+}
+
+/* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
+
+void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
+{
+    int param_type;
+
+    if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT)
+        param_type = V_ASN1_UNDEF;
+    else
+        param_type = V_ASN1_NULL;
+
+    X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
+
+}
+
+/*
+ * X509_ALGOR_cmp returns 0 if |a| and |b| are equal and non-zero otherwise.
+ */
+int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
+{
+    int rv;
+    rv = OBJ_cmp(a->algorithm, b->algorithm);
+    if (rv)
+        return rv;
+    if (!a->parameter && !b->parameter)
+        return 0;
+    return ASN1_TYPE_cmp(a->parameter, b->parameter);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c
new file mode 100644
index 0000000..31949a3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c	
@@ -0,0 +1,399 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <limits.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/stack.h>
+
+int X509_verify(X509 *a, EVP_PKEY *r)
+{
+    if (X509_ALGOR_cmp(a->sig_alg, a->cert_info->signature)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_SIGNATURE_ALGORITHM_MISMATCH);
+        return 0;
+    }
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CINF), a->sig_alg,
+                             a->signature, a->cert_info, r));
+}
+
+int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_REQ_INFO),
+                             a->sig_alg, a->signature, a->req_info, r));
+}
+
+int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    x->cert_info->enc.modified = 1;
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
+                           x->sig_alg, x->signature, x->cert_info, pkey, md));
+}
+
+int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx)
+{
+    x->cert_info->enc.modified = 1;
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CINF),
+                              x->cert_info->signature,
+                              x->sig_alg, x->signature, x->cert_info, ctx);
+}
+
+int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
+                           x->signature, x->req_info, pkey, md));
+}
+
+int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx)
+{
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_REQ_INFO),
+                              x->sig_alg, NULL, x->signature, x->req_info,
+                              ctx);
+}
+
+int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    x->crl->enc.modified = 1;
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
+                           x->sig_alg, x->signature, x->crl, pkey, md));
+}
+
+int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx)
+{
+    x->crl->enc.modified = 1;
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CRL_INFO),
+                              x->crl->sig_alg, x->sig_alg, x->signature,
+                              x->crl, ctx);
+}
+
+int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    return (ASN1_item_sign(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor, NULL,
+                           x->signature, x->spkac, pkey, md));
+}
+
+int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor,
+                             x->signature, x->spkac, pkey));
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509 *d2i_X509_fp(FILE *fp, X509 **x509)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509), fp, x509);
+}
+
+int i2d_X509_fp(FILE *fp, X509 *x509)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509), fp, x509);
+}
+#endif
+
+X509 *d2i_X509_bio(BIO *bp, X509 **x509)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509), bp, x509);
+}
+
+int i2d_X509_bio(BIO *bp, X509 *x509)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509), bp, x509);
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509_CRL *d2i_X509_CRL_fp(FILE *fp, X509_CRL **crl)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
+}
+
+int i2d_X509_CRL_fp(FILE *fp, X509_CRL *crl)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
+}
+#endif
+
+X509_CRL *d2i_X509_CRL_bio(BIO *bp, X509_CRL **crl)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
+}
+
+int i2d_X509_CRL_bio(BIO *bp, X509_CRL *crl)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509_REQ *d2i_X509_REQ_fp(FILE *fp, X509_REQ **req)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
+}
+
+int i2d_X509_REQ_fp(FILE *fp, X509_REQ *req)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
+}
+#endif
+
+X509_REQ *d2i_X509_REQ_bio(BIO *bp, X509_REQ **req)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
+}
+
+int i2d_X509_REQ_bio(BIO *bp, X509_REQ *req)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+#define IMPLEMENT_D2I_FP(type, name, bio_func) \
+  type *name(FILE *fp, type **obj) {           \
+    BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
+    if (bio == NULL) {                         \
+      return NULL;                             \
+    }                                          \
+    type *ret = bio_func(bio, obj);            \
+    BIO_free(bio);                             \
+    return ret;                                \
+  }
+
+#define IMPLEMENT_I2D_FP(type, name, bio_func) \
+  int name(FILE *fp, type *obj) {              \
+    BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
+    if (bio == NULL) {                         \
+      return 0;                                \
+    }                                          \
+    int ret = bio_func(bio, obj);              \
+    BIO_free(bio);                             \
+    return ret;                                \
+  }
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSAPrivateKey_fp, d2i_RSAPrivateKey_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSAPrivateKey_fp, i2d_RSAPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSAPublicKey_fp, d2i_RSAPublicKey_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSAPublicKey_fp, i2d_RSAPublicKey_bio)
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSA_PUBKEY_fp, d2i_RSA_PUBKEY_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSA_PUBKEY_fp, i2d_RSA_PUBKEY_bio)
+#endif
+
+#define IMPLEMENT_D2I_BIO(type, name, d2i_func)         \
+  type *name(BIO *bio, type **obj) {                    \
+    uint8_t *data;                                      \
+    size_t len;                                         \
+    if (!BIO_read_asn1(bio, &data, &len, 100 * 1024)) { \
+      return NULL;                                      \
+    }                                                   \
+    const uint8_t *ptr = data;                          \
+    type *ret = d2i_func(obj, &ptr, (long)len);         \
+    OPENSSL_free(data);                                 \
+    return ret;                                         \
+  }
+
+#define IMPLEMENT_I2D_BIO(type, name, i2d_func) \
+  int name(BIO *bio, type *obj) {               \
+    uint8_t *data = NULL;                       \
+    int len = i2d_func(obj, &data);             \
+    if (len < 0) {                              \
+      return 0;                                 \
+    }                                           \
+    int ret = BIO_write_all(bio, data, len);    \
+    OPENSSL_free(data);                         \
+    return ret;                                 \
+  }
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSAPrivateKey_bio, d2i_RSAPrivateKey)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSAPrivateKey_bio, i2d_RSAPrivateKey)
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSAPublicKey_bio, d2i_RSAPublicKey)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSAPublicKey_bio, i2d_RSAPublicKey)
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSA_PUBKEY_bio, d2i_RSA_PUBKEY)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSA_PUBKEY_bio, i2d_RSA_PUBKEY)
+
+#ifndef OPENSSL_NO_DSA
+# ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(DSA, d2i_DSAPrivateKey_fp, d2i_DSAPrivateKey_bio)
+IMPLEMENT_I2D_FP(DSA, i2d_DSAPrivateKey_fp, i2d_DSAPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(DSA, d2i_DSA_PUBKEY_fp, d2i_DSA_PUBKEY_bio)
+IMPLEMENT_I2D_FP(DSA, i2d_DSA_PUBKEY_fp, i2d_DSA_PUBKEY_bio)
+# endif
+
+IMPLEMENT_D2I_BIO(DSA, d2i_DSAPrivateKey_bio, d2i_DSAPrivateKey)
+IMPLEMENT_I2D_BIO(DSA, i2d_DSAPrivateKey_bio, i2d_DSAPrivateKey)
+
+IMPLEMENT_D2I_BIO(DSA, d2i_DSA_PUBKEY_bio, d2i_DSA_PUBKEY)
+IMPLEMENT_I2D_BIO(DSA, i2d_DSA_PUBKEY_bio, i2d_DSA_PUBKEY)
+#endif
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(EC_KEY, d2i_ECPrivateKey_fp, d2i_ECPrivateKey_bio)
+IMPLEMENT_I2D_FP(EC_KEY, i2d_ECPrivateKey_fp, i2d_ECPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(EC_KEY, d2i_EC_PUBKEY_fp, d2i_EC_PUBKEY_bio)
+IMPLEMENT_I2D_FP(EC_KEY, i2d_EC_PUBKEY_fp, i2d_EC_PUBKEY_bio)
+#endif
+
+IMPLEMENT_D2I_BIO(EC_KEY, d2i_ECPrivateKey_bio, d2i_ECPrivateKey)
+IMPLEMENT_I2D_BIO(EC_KEY, i2d_ECPrivateKey_bio, i2d_ECPrivateKey)
+
+IMPLEMENT_D2I_BIO(EC_KEY, d2i_EC_PUBKEY_bio, d2i_EC_PUBKEY)
+IMPLEMENT_I2D_BIO(EC_KEY, i2d_EC_PUBKEY_bio, i2d_EC_PUBKEY)
+
+int X509_pubkey_digest(const X509 *data, const EVP_MD *type,
+                       unsigned char *md, unsigned int *len)
+{
+    ASN1_BIT_STRING *key;
+    key = X509_get0_pubkey_bitstr(data);
+    if (!key)
+        return 0;
+    return EVP_Digest(key->data, key->length, md, len, type, NULL);
+}
+
+int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
+                unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509), type, (char *)data, md, len));
+}
+
+int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type,
+                    unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_CRL), type, (char *)data, md, len));
+}
+
+int X509_REQ_digest(const X509_REQ *data, const EVP_MD *type,
+                    unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_REQ), type, (char *)data, md, len));
+}
+
+int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type,
+                     unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_NAME), type, (char *)data, md, len));
+}
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(X509_SIG, d2i_PKCS8_fp, d2i_PKCS8_bio)
+IMPLEMENT_I2D_FP(X509_SIG, i2d_PKCS8_fp, i2d_PKCS8_bio)
+#endif
+
+IMPLEMENT_D2I_BIO(X509_SIG, d2i_PKCS8_bio, d2i_X509_SIG)
+IMPLEMENT_I2D_BIO(X509_SIG, i2d_PKCS8_bio, i2d_X509_SIG)
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_fp,
+                 d2i_PKCS8_PRIV_KEY_INFO_bio)
+IMPLEMENT_I2D_FP(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_fp,
+                 i2d_PKCS8_PRIV_KEY_INFO_bio)
+
+int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    int ret;
+    p8inf = EVP_PKEY2PKCS8(key);
+    if (!p8inf)
+        return 0;
+    ret = i2d_PKCS8_PRIV_KEY_INFO_fp(fp, p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    return ret;
+}
+
+IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PrivateKey_fp, d2i_PrivateKey_bio)
+IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PrivateKey_fp, i2d_PrivateKey_bio)
+
+IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PUBKEY_fp, d2i_PUBKEY_bio)
+IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PUBKEY_fp, i2d_PUBKEY_bio)
+
+IMPLEMENT_D2I_BIO(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_bio,
+                  d2i_PKCS8_PRIV_KEY_INFO)
+IMPLEMENT_I2D_BIO(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_bio,
+                  i2d_PKCS8_PRIV_KEY_INFO)
+
+int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    int ret;
+    p8inf = EVP_PKEY2PKCS8(key);
+    if (!p8inf)
+        return 0;
+    ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    return ret;
+}
+#endif
+
+IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PrivateKey_bio, d2i_AutoPrivateKey)
+IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PrivateKey_bio, i2d_PrivateKey)
+
+IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PUBKEY_bio, d2i_PUBKEY)
+IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PUBKEY_bio, i2d_PUBKEY)
+
+IMPLEMENT_D2I_BIO(DH, d2i_DHparams_bio, d2i_DHparams)
+IMPLEMENT_I2D_BIO(const DH, i2d_DHparams_bio, i2d_DHparams)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c.grpc_back
new file mode 100644
index 0000000..33c11b6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_all.c.grpc_back	
@@ -0,0 +1,399 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <limits.h>
+
+#include <openssl/asn1.h>
+#include <openssl/digest.h>
+#include <openssl/dsa.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/rsa.h>
+#include <openssl/stack.h>
+
+int X509_verify(X509 *a, EVP_PKEY *r)
+{
+    if (X509_ALGOR_cmp(a->sig_alg, a->cert_info->signature)) {
+        OPENSSL_PUT_ERROR(X509, X509_R_SIGNATURE_ALGORITHM_MISMATCH);
+        return 0;
+    }
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CINF), a->sig_alg,
+                             a->signature, a->cert_info, r));
+}
+
+int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_REQ_INFO),
+                             a->sig_alg, a->signature, a->req_info, r));
+}
+
+int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    x->cert_info->enc.modified = 1;
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
+                           x->sig_alg, x->signature, x->cert_info, pkey, md));
+}
+
+int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx)
+{
+    x->cert_info->enc.modified = 1;
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CINF),
+                              x->cert_info->signature,
+                              x->sig_alg, x->signature, x->cert_info, ctx);
+}
+
+int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
+                           x->signature, x->req_info, pkey, md));
+}
+
+int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx)
+{
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_REQ_INFO),
+                              x->sig_alg, NULL, x->signature, x->req_info,
+                              ctx);
+}
+
+int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    x->crl->enc.modified = 1;
+    return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
+                           x->sig_alg, x->signature, x->crl, pkey, md));
+}
+
+int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx)
+{
+    x->crl->enc.modified = 1;
+    return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CRL_INFO),
+                              x->crl->sig_alg, x->sig_alg, x->signature,
+                              x->crl, ctx);
+}
+
+int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md)
+{
+    return (ASN1_item_sign(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor, NULL,
+                           x->signature, x->spkac, pkey, md));
+}
+
+int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor,
+                             x->signature, x->spkac, pkey));
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509 *d2i_X509_fp(FILE *fp, X509 **x509)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509), fp, x509);
+}
+
+int i2d_X509_fp(FILE *fp, X509 *x509)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509), fp, x509);
+}
+#endif
+
+X509 *d2i_X509_bio(BIO *bp, X509 **x509)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509), bp, x509);
+}
+
+int i2d_X509_bio(BIO *bp, X509 *x509)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509), bp, x509);
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509_CRL *d2i_X509_CRL_fp(FILE *fp, X509_CRL **crl)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
+}
+
+int i2d_X509_CRL_fp(FILE *fp, X509_CRL *crl)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
+}
+#endif
+
+X509_CRL *d2i_X509_CRL_bio(BIO *bp, X509_CRL **crl)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
+}
+
+int i2d_X509_CRL_bio(BIO *bp, X509_CRL *crl)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
+}
+
+#ifndef OPENSSL_NO_FP_API
+X509_REQ *d2i_X509_REQ_fp(FILE *fp, X509_REQ **req)
+{
+    return ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
+}
+
+int i2d_X509_REQ_fp(FILE *fp, X509_REQ *req)
+{
+    return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
+}
+#endif
+
+X509_REQ *d2i_X509_REQ_bio(BIO *bp, X509_REQ **req)
+{
+    return ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
+}
+
+int i2d_X509_REQ_bio(BIO *bp, X509_REQ *req)
+{
+    return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
+}
+
+#ifndef OPENSSL_NO_FP_API
+
+#define IMPLEMENT_D2I_FP(type, name, bio_func) \
+  type *name(FILE *fp, type **obj) {           \
+    BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
+    if (bio == NULL) {                         \
+      return NULL;                             \
+    }                                          \
+    type *ret = bio_func(bio, obj);            \
+    BIO_free(bio);                             \
+    return ret;                                \
+  }
+
+#define IMPLEMENT_I2D_FP(type, name, bio_func) \
+  int name(FILE *fp, type *obj) {              \
+    BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
+    if (bio == NULL) {                         \
+      return 0;                                \
+    }                                          \
+    int ret = bio_func(bio, obj);              \
+    BIO_free(bio);                             \
+    return ret;                                \
+  }
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSAPrivateKey_fp, d2i_RSAPrivateKey_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSAPrivateKey_fp, i2d_RSAPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSAPublicKey_fp, d2i_RSAPublicKey_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSAPublicKey_fp, i2d_RSAPublicKey_bio)
+
+IMPLEMENT_D2I_FP(RSA, d2i_RSA_PUBKEY_fp, d2i_RSA_PUBKEY_bio)
+IMPLEMENT_I2D_FP(RSA, i2d_RSA_PUBKEY_fp, i2d_RSA_PUBKEY_bio)
+#endif
+
+#define IMPLEMENT_D2I_BIO(type, name, d2i_func)         \
+  type *name(BIO *bio, type **obj) {                    \
+    uint8_t *data;                                      \
+    size_t len;                                         \
+    if (!BIO_read_asn1(bio, &data, &len, 100 * 1024)) { \
+      return NULL;                                      \
+    }                                                   \
+    const uint8_t *ptr = data;                          \
+    type *ret = d2i_func(obj, &ptr, (long)len);         \
+    OPENSSL_free(data);                                 \
+    return ret;                                         \
+  }
+
+#define IMPLEMENT_I2D_BIO(type, name, i2d_func) \
+  int name(BIO *bio, type *obj) {               \
+    uint8_t *data = NULL;                       \
+    int len = i2d_func(obj, &data);             \
+    if (len < 0) {                              \
+      return 0;                                 \
+    }                                           \
+    int ret = BIO_write_all(bio, data, len);    \
+    OPENSSL_free(data);                         \
+    return ret;                                 \
+  }
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSAPrivateKey_bio, d2i_RSAPrivateKey)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSAPrivateKey_bio, i2d_RSAPrivateKey)
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSAPublicKey_bio, d2i_RSAPublicKey)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSAPublicKey_bio, i2d_RSAPublicKey)
+
+IMPLEMENT_D2I_BIO(RSA, d2i_RSA_PUBKEY_bio, d2i_RSA_PUBKEY)
+IMPLEMENT_I2D_BIO(RSA, i2d_RSA_PUBKEY_bio, i2d_RSA_PUBKEY)
+
+#ifndef OPENSSL_NO_DSA
+# ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(DSA, d2i_DSAPrivateKey_fp, d2i_DSAPrivateKey_bio)
+IMPLEMENT_I2D_FP(DSA, i2d_DSAPrivateKey_fp, i2d_DSAPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(DSA, d2i_DSA_PUBKEY_fp, d2i_DSA_PUBKEY_bio)
+IMPLEMENT_I2D_FP(DSA, i2d_DSA_PUBKEY_fp, i2d_DSA_PUBKEY_bio)
+# endif
+
+IMPLEMENT_D2I_BIO(DSA, d2i_DSAPrivateKey_bio, d2i_DSAPrivateKey)
+IMPLEMENT_I2D_BIO(DSA, i2d_DSAPrivateKey_bio, i2d_DSAPrivateKey)
+
+IMPLEMENT_D2I_BIO(DSA, d2i_DSA_PUBKEY_bio, d2i_DSA_PUBKEY)
+IMPLEMENT_I2D_BIO(DSA, i2d_DSA_PUBKEY_bio, i2d_DSA_PUBKEY)
+#endif
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(EC_KEY, d2i_ECPrivateKey_fp, d2i_ECPrivateKey_bio)
+IMPLEMENT_I2D_FP(EC_KEY, i2d_ECPrivateKey_fp, i2d_ECPrivateKey_bio)
+
+IMPLEMENT_D2I_FP(EC_KEY, d2i_EC_PUBKEY_fp, d2i_EC_PUBKEY_bio)
+IMPLEMENT_I2D_FP(EC_KEY, i2d_EC_PUBKEY_fp, i2d_EC_PUBKEY_bio)
+#endif
+
+IMPLEMENT_D2I_BIO(EC_KEY, d2i_ECPrivateKey_bio, d2i_ECPrivateKey)
+IMPLEMENT_I2D_BIO(EC_KEY, i2d_ECPrivateKey_bio, i2d_ECPrivateKey)
+
+IMPLEMENT_D2I_BIO(EC_KEY, d2i_EC_PUBKEY_bio, d2i_EC_PUBKEY)
+IMPLEMENT_I2D_BIO(EC_KEY, i2d_EC_PUBKEY_bio, i2d_EC_PUBKEY)
+
+int X509_pubkey_digest(const X509 *data, const EVP_MD *type,
+                       unsigned char *md, unsigned int *len)
+{
+    ASN1_BIT_STRING *key;
+    key = X509_get0_pubkey_bitstr(data);
+    if (!key)
+        return 0;
+    return EVP_Digest(key->data, key->length, md, len, type, NULL);
+}
+
+int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
+                unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509), type, (char *)data, md, len));
+}
+
+int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type,
+                    unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_CRL), type, (char *)data, md, len));
+}
+
+int X509_REQ_digest(const X509_REQ *data, const EVP_MD *type,
+                    unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_REQ), type, (char *)data, md, len));
+}
+
+int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type,
+                     unsigned char *md, unsigned int *len)
+{
+    return (ASN1_item_digest
+            (ASN1_ITEM_rptr(X509_NAME), type, (char *)data, md, len));
+}
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(X509_SIG, d2i_PKCS8_fp, d2i_PKCS8_bio)
+IMPLEMENT_I2D_FP(X509_SIG, i2d_PKCS8_fp, i2d_PKCS8_bio)
+#endif
+
+IMPLEMENT_D2I_BIO(X509_SIG, d2i_PKCS8_bio, d2i_X509_SIG)
+IMPLEMENT_I2D_BIO(X509_SIG, i2d_PKCS8_bio, i2d_X509_SIG)
+
+#ifndef OPENSSL_NO_FP_API
+IMPLEMENT_D2I_FP(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_fp,
+                 d2i_PKCS8_PRIV_KEY_INFO_bio)
+IMPLEMENT_I2D_FP(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_fp,
+                 i2d_PKCS8_PRIV_KEY_INFO_bio)
+
+int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    int ret;
+    p8inf = EVP_PKEY2PKCS8(key);
+    if (!p8inf)
+        return 0;
+    ret = i2d_PKCS8_PRIV_KEY_INFO_fp(fp, p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    return ret;
+}
+
+IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PrivateKey_fp, d2i_PrivateKey_bio)
+IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PrivateKey_fp, i2d_PrivateKey_bio)
+
+IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PUBKEY_fp, d2i_PUBKEY_bio)
+IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PUBKEY_fp, i2d_PUBKEY_bio)
+
+IMPLEMENT_D2I_BIO(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_bio,
+                  d2i_PKCS8_PRIV_KEY_INFO)
+IMPLEMENT_I2D_BIO(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_bio,
+                  i2d_PKCS8_PRIV_KEY_INFO)
+
+int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key)
+{
+    PKCS8_PRIV_KEY_INFO *p8inf;
+    int ret;
+    p8inf = EVP_PKEY2PKCS8(key);
+    if (!p8inf)
+        return 0;
+    ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
+    PKCS8_PRIV_KEY_INFO_free(p8inf);
+    return ret;
+}
+#endif
+
+IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PrivateKey_bio, d2i_AutoPrivateKey)
+IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PrivateKey_bio, i2d_PrivateKey)
+
+IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PUBKEY_bio, d2i_PUBKEY)
+IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PUBKEY_bio, i2d_PUBKEY)
+
+IMPLEMENT_D2I_BIO(DH, d2i_DHparams_bio, d2i_DHparams)
+IMPLEMENT_I2D_BIO(const DH, i2d_DHparams_bio, i2d_DHparams)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c
new file mode 100644
index 0000000..1e7f845
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/obj.h>
+
+/*
+ * X509_ATTRIBUTE: this has the following form: typedef struct
+ * x509_attributes_st { ASN1_OBJECT *object; int single; union { char *ptr;
+ * STACK_OF(ASN1_TYPE) *set; ASN1_TYPE *single; } value; } X509_ATTRIBUTE;
+ * this needs some extra thought because the CHOICE type is merged with the
+ * main structure and because the value can be anything at all we *must* try
+ * the SET OF first because the ASN1_ANY type will swallow anything including
+ * the whole SET OF structure.
+ */
+
+ASN1_CHOICE(X509_ATTRIBUTE_SET) = {
+        ASN1_SET_OF(X509_ATTRIBUTE, value.set, ASN1_ANY),
+        ASN1_SIMPLE(X509_ATTRIBUTE, value.single, ASN1_ANY)
+} ASN1_CHOICE_END_selector(X509_ATTRIBUTE, X509_ATTRIBUTE_SET, single)
+
+ASN1_SEQUENCE(X509_ATTRIBUTE) = {
+        ASN1_SIMPLE(X509_ATTRIBUTE, object, ASN1_OBJECT),
+        /* CHOICE type merged with parent */
+        ASN1_EX_COMBINE(0, 0, X509_ATTRIBUTE_SET)
+} ASN1_SEQUENCE_END(X509_ATTRIBUTE)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_ATTRIBUTE)
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value)
+{
+    X509_ATTRIBUTE *ret = NULL;
+    ASN1_TYPE *val = NULL;
+
+    if ((ret = X509_ATTRIBUTE_new()) == NULL)
+        return (NULL);
+    /* TODO(fork): const correctness. */
+    ret->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
+    ret->single = 0;
+    if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL)
+        goto err;
+    if ((val = ASN1_TYPE_new()) == NULL)
+        goto err;
+    if (!sk_ASN1_TYPE_push(ret->value.set, val))
+        goto err;
+
+    ASN1_TYPE_set(val, atrtype, value);
+    return (ret);
+ err:
+    if (ret != NULL)
+        X509_ATTRIBUTE_free(ret);
+    if (val != NULL)
+        ASN1_TYPE_free(val);
+    return (NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c.grpc_back
new file mode 100644
index 0000000..de8c95c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_attrib.c.grpc_back	
@@ -0,0 +1,111 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/obj.h>
+
+/*
+ * X509_ATTRIBUTE: this has the following form: typedef struct
+ * x509_attributes_st { ASN1_OBJECT *object; int single; union { char *ptr;
+ * STACK_OF(ASN1_TYPE) *set; ASN1_TYPE *single; } value; } X509_ATTRIBUTE;
+ * this needs some extra thought because the CHOICE type is merged with the
+ * main structure and because the value can be anything at all we *must* try
+ * the SET OF first because the ASN1_ANY type will swallow anything including
+ * the whole SET OF structure.
+ */
+
+ASN1_CHOICE(X509_ATTRIBUTE_SET) = {
+        ASN1_SET_OF(X509_ATTRIBUTE, value.set, ASN1_ANY),
+        ASN1_SIMPLE(X509_ATTRIBUTE, value.single, ASN1_ANY)
+} ASN1_CHOICE_END_selector(X509_ATTRIBUTE, X509_ATTRIBUTE_SET, single)
+
+ASN1_SEQUENCE(X509_ATTRIBUTE) = {
+        ASN1_SIMPLE(X509_ATTRIBUTE, object, ASN1_OBJECT),
+        /* CHOICE type merged with parent */
+        ASN1_EX_COMBINE(0, 0, X509_ATTRIBUTE_SET)
+} ASN1_SEQUENCE_END(X509_ATTRIBUTE)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_ATTRIBUTE)
+
+X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value)
+{
+    X509_ATTRIBUTE *ret = NULL;
+    ASN1_TYPE *val = NULL;
+
+    if ((ret = X509_ATTRIBUTE_new()) == NULL)
+        return (NULL);
+    /* TODO(fork): const correctness. */
+    ret->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
+    ret->single = 0;
+    if ((ret->value.set = sk_ASN1_TYPE_new_null()) == NULL)
+        goto err;
+    if ((val = ASN1_TYPE_new()) == NULL)
+        goto err;
+    if (!sk_ASN1_TYPE_push(ret->value.set, val))
+        goto err;
+
+    ASN1_TYPE_set(val, atrtype, value);
+    return (ret);
+ err:
+    if (ret != NULL)
+        X509_ATTRIBUTE_free(ret);
+    if (val != NULL)
+        ASN1_TYPE_free(val);
+    return (NULL);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c
new file mode 100644
index 0000000..b1ba6fb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c	
@@ -0,0 +1,541 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+/*
+ * Method to handle CRL access. In general a CRL could be very large (several
+ * Mb) and can consume large amounts of resources if stored in memory by
+ * multiple processes. This method allows general CRL operations to be
+ * redirected to more efficient callbacks: for example a CRL entry database.
+ */
+
+#define X509_CRL_METHOD_DYNAMIC         1
+
+struct x509_crl_method_st {
+    int flags;
+    int (*crl_init) (X509_CRL *crl);
+    int (*crl_free) (X509_CRL *crl);
+    int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
+                       ASN1_INTEGER *ser, X509_NAME *issuer);
+    int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
+};
+
+static int X509_REVOKED_cmp(const X509_REVOKED **a, const X509_REVOKED **b);
+static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
+
+ASN1_SEQUENCE(X509_REVOKED) = {
+        ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
+        ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
+} ASN1_SEQUENCE_END(X509_REVOKED)
+
+static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
+static int def_crl_lookup(X509_CRL *crl,
+                          X509_REVOKED **ret, ASN1_INTEGER *serial,
+                          X509_NAME *issuer);
+
+static const X509_CRL_METHOD int_crl_meth = {
+    0,
+    0, 0,
+    def_crl_lookup,
+    def_crl_verify
+};
+
+static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
+
+/*
+ * The X509_CRL_INFO structure needs a bit of customisation. Since we cache
+ * the original encoding the signature wont be affected by reordering of the
+ * revoked field.
+ */
+static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                      void *exarg)
+{
+    X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
+
+    if (!a || !a->revoked)
+        return 1;
+    switch (operation) {
+        /*
+         * Just set cmp function here. We don't sort because that would
+         * affect the output of X509_CRL_print().
+         */
+    case ASN1_OP_D2I_POST:
+        (void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
+        break;
+    }
+    return 1;
+}
+
+
+ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
+        ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
+        ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
+        ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
+        ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
+        ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
+} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
+
+/*
+ * Set CRL entry issuer according to CRL certificate issuer extension. Check
+ * for unhandled critical CRL entry extensions.
+ */
+
+static int crl_set_issuers(X509_CRL *crl)
+{
+
+    size_t i, k;
+    int j;
+    GENERAL_NAMES *gens, *gtmp;
+    STACK_OF(X509_REVOKED) *revoked;
+
+    revoked = X509_CRL_get_REVOKED(crl);
+
+    gens = NULL;
+    for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) {
+        X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
+        STACK_OF(X509_EXTENSION) *exts;
+        ASN1_ENUMERATED *reason;
+        X509_EXTENSION *ext;
+        gtmp = X509_REVOKED_get_ext_d2i(rev,
+                                        NID_certificate_issuer, &j, NULL);
+        if (!gtmp && (j != -1)) {
+            crl->flags |= EXFLAG_INVALID;
+            return 1;
+        }
+
+        if (gtmp) {
+            gens = gtmp;
+            if (!crl->issuers) {
+                crl->issuers = sk_GENERAL_NAMES_new_null();
+                if (!crl->issuers)
+                    return 0;
+            }
+            if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
+                return 0;
+        }
+        rev->issuer = gens;
+
+        reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
+        if (!reason && (j != -1)) {
+            crl->flags |= EXFLAG_INVALID;
+            return 1;
+        }
+
+        if (reason) {
+            rev->reason = ASN1_ENUMERATED_get(reason);
+            ASN1_ENUMERATED_free(reason);
+        } else
+            rev->reason = CRL_REASON_NONE;
+
+        /* Check for critical CRL entry extensions */
+
+        exts = rev->extensions;
+
+        for (k = 0; k < sk_X509_EXTENSION_num(exts); k++) {
+            ext = sk_X509_EXTENSION_value(exts, k);
+            if (ext->critical > 0) {
+                if (OBJ_obj2nid(ext->object) == NID_certificate_issuer)
+                    continue;
+                crl->flags |= EXFLAG_CRITICAL;
+                break;
+            }
+        }
+
+    }
+
+    return 1;
+
+}
+
+/*
+ * The X509_CRL structure needs a bit of customisation. Cache some extensions
+ * and hash of the whole CRL.
+ */
+static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                  void *exarg)
+{
+    X509_CRL *crl = (X509_CRL *)*pval;
+    STACK_OF(X509_EXTENSION) *exts;
+    X509_EXTENSION *ext;
+    size_t idx;
+
+    switch (operation) {
+    case ASN1_OP_NEW_POST:
+        crl->idp = NULL;
+        crl->akid = NULL;
+        crl->flags = 0;
+        crl->idp_flags = 0;
+        crl->idp_reasons = CRLDP_ALL_REASONS;
+        crl->meth = default_crl_method;
+        crl->meth_data = NULL;
+        crl->issuers = NULL;
+        crl->crl_number = NULL;
+        crl->base_crl_number = NULL;
+        break;
+
+    case ASN1_OP_D2I_POST:
+        X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
+        crl->idp = X509_CRL_get_ext_d2i(crl,
+                                        NID_issuing_distribution_point, NULL,
+                                        NULL);
+        if (crl->idp)
+            setup_idp(crl, crl->idp);
+
+        crl->akid = X509_CRL_get_ext_d2i(crl,
+                                         NID_authority_key_identifier, NULL,
+                                         NULL);
+
+        crl->crl_number = X509_CRL_get_ext_d2i(crl,
+                                               NID_crl_number, NULL, NULL);
+
+        crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
+                                                    NID_delta_crl, NULL,
+                                                    NULL);
+        /* Delta CRLs must have CRL number */
+        if (crl->base_crl_number && !crl->crl_number)
+            crl->flags |= EXFLAG_INVALID;
+
+        /*
+         * See if we have any unhandled critical CRL extensions and indicate
+         * this in a flag. We only currently handle IDP so anything else
+         * critical sets the flag. This code accesses the X509_CRL structure
+         * directly: applications shouldn't do this.
+         */
+
+        exts = crl->crl->extensions;
+
+        for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
+            int nid;
+            ext = sk_X509_EXTENSION_value(exts, idx);
+            nid = OBJ_obj2nid(ext->object);
+            if (nid == NID_freshest_crl)
+                crl->flags |= EXFLAG_FRESHEST;
+            if (ext->critical > 0) {
+                /* We handle IDP and deltas */
+                if ((nid == NID_issuing_distribution_point)
+                    || (nid == NID_authority_key_identifier)
+                    || (nid == NID_delta_crl))
+                    continue;
+                crl->flags |= EXFLAG_CRITICAL;
+                break;
+            }
+        }
+
+        if (!crl_set_issuers(crl))
+            return 0;
+
+        if (crl->meth->crl_init) {
+            if (crl->meth->crl_init(crl) == 0)
+                return 0;
+        }
+        break;
+
+    case ASN1_OP_FREE_POST:
+        /* |crl->meth| may be NULL if constructing the object failed before
+         * |ASN1_OP_NEW_POST| was run. */
+        if (crl->meth && crl->meth->crl_free) {
+            if (!crl->meth->crl_free(crl))
+                return 0;
+        }
+        if (crl->akid)
+            AUTHORITY_KEYID_free(crl->akid);
+        if (crl->idp)
+            ISSUING_DIST_POINT_free(crl->idp);
+        ASN1_INTEGER_free(crl->crl_number);
+        ASN1_INTEGER_free(crl->base_crl_number);
+        sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
+        break;
+    }
+    return 1;
+}
+
+/* Convert IDP into a more convenient form */
+
+static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
+{
+    int idp_only = 0;
+    /* Set various flags according to IDP */
+    crl->idp_flags |= IDP_PRESENT;
+    if (idp->onlyuser > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYUSER;
+    }
+    if (idp->onlyCA > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYCA;
+    }
+    if (idp->onlyattr > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYATTR;
+    }
+
+    if (idp_only > 1)
+        crl->idp_flags |= IDP_INVALID;
+
+    if (idp->indirectCRL > 0)
+        crl->idp_flags |= IDP_INDIRECT;
+
+    if (idp->onlysomereasons) {
+        crl->idp_flags |= IDP_REASONS;
+        if (idp->onlysomereasons->length > 0)
+            crl->idp_reasons = idp->onlysomereasons->data[0];
+        if (idp->onlysomereasons->length > 1)
+            crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
+        crl->idp_reasons &= CRLDP_ALL_REASONS;
+    }
+
+    DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
+}
+
+ASN1_SEQUENCE_ref(X509_CRL, crl_cb) = {
+        ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
+        ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
+IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
+
+static int X509_REVOKED_cmp(const X509_REVOKED **a, const X509_REVOKED **b)
+{
+    return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
+                            (ASN1_STRING *)(*b)->serialNumber));
+}
+
+int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
+{
+    X509_CRL_INFO *inf;
+    inf = crl->crl;
+    if (!inf->revoked)
+        inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
+    if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    inf->enc.modified = 1;
+    return 1;
+}
+
+int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
+{
+    if (crl->meth->crl_verify)
+        return crl->meth->crl_verify(crl, r);
+    return 0;
+}
+
+int X509_CRL_get0_by_serial(X509_CRL *crl,
+                            X509_REVOKED **ret, ASN1_INTEGER *serial)
+{
+    if (crl->meth->crl_lookup)
+        return crl->meth->crl_lookup(crl, ret, serial, NULL);
+    return 0;
+}
+
+int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
+{
+    if (crl->meth->crl_lookup)
+        return crl->meth->crl_lookup(crl, ret,
+                                     X509_get_serialNumber(x),
+                                     X509_get_issuer_name(x));
+    return 0;
+}
+
+static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
+                             crl->sig_alg, crl->signature, crl->crl, r));
+}
+
+static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
+                                    X509_REVOKED *rev)
+{
+    size_t i;
+
+    if (!rev->issuer) {
+        if (!nm)
+            return 1;
+        if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
+            return 1;
+        return 0;
+    }
+
+    if (!nm)
+        nm = X509_CRL_get_issuer(crl);
+
+    for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
+        if (gen->type != GEN_DIRNAME)
+            continue;
+        if (!X509_NAME_cmp(nm, gen->d.directoryName))
+            return 1;
+    }
+    return 0;
+
+}
+
+static struct CRYPTO_STATIC_MUTEX g_crl_sort_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+static int def_crl_lookup(X509_CRL *crl,
+                          X509_REVOKED **ret, ASN1_INTEGER *serial,
+                          X509_NAME *issuer)
+{
+    X509_REVOKED rtmp, *rev;
+    size_t idx;
+    rtmp.serialNumber = serial;
+    /*
+     * Sort revoked into serial number order if not already sorted. Do this
+     * under a lock to avoid race condition.
+     */
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_crl_sort_lock);
+    const int is_sorted = sk_X509_REVOKED_is_sorted(crl->crl->revoked);
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_crl_sort_lock);
+
+    if (!is_sorted) {
+        CRYPTO_STATIC_MUTEX_lock_write(&g_crl_sort_lock);
+        if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) {
+            sk_X509_REVOKED_sort(crl->crl->revoked);
+        }
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_crl_sort_lock);
+    }
+
+    if (!sk_X509_REVOKED_find(crl->crl->revoked, &idx, &rtmp))
+        return 0;
+    /* Need to look for matching name */
+    for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) {
+        rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
+        if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
+            return 0;
+        if (crl_revoked_issuer_match(crl, issuer, rev)) {
+            if (ret)
+                *ret = rev;
+            if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
+                return 2;
+            return 1;
+        }
+    }
+    return 0;
+}
+
+void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
+{
+    if (meth == NULL)
+        default_crl_method = &int_crl_meth;
+    else
+        default_crl_method = meth;
+}
+
+X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
+                                     int (*crl_free) (X509_CRL *crl),
+                                     int (*crl_lookup) (X509_CRL *crl,
+                                                        X509_REVOKED **ret,
+                                                        ASN1_INTEGER *ser,
+                                                        X509_NAME *issuer),
+                                     int (*crl_verify) (X509_CRL *crl,
+                                                        EVP_PKEY *pk))
+{
+    X509_CRL_METHOD *m;
+    m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
+    if (!m)
+        return NULL;
+    m->crl_init = crl_init;
+    m->crl_free = crl_free;
+    m->crl_lookup = crl_lookup;
+    m->crl_verify = crl_verify;
+    m->flags = X509_CRL_METHOD_DYNAMIC;
+    return m;
+}
+
+void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
+{
+    if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
+        return;
+    OPENSSL_free(m);
+}
+
+void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
+{
+    crl->meth_data = dat;
+}
+
+void *X509_CRL_get_meth_data(X509_CRL *crl)
+{
+    return crl->meth_data;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
+
+IMPLEMENT_ASN1_SET_OF(X509_CRL)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c.grpc_back
new file mode 100644
index 0000000..6450e84
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_crl.c.grpc_back	
@@ -0,0 +1,541 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+/*
+ * Method to handle CRL access. In general a CRL could be very large (several
+ * Mb) and can consume large amounts of resources if stored in memory by
+ * multiple processes. This method allows general CRL operations to be
+ * redirected to more efficient callbacks: for example a CRL entry database.
+ */
+
+#define X509_CRL_METHOD_DYNAMIC         1
+
+struct x509_crl_method_st {
+    int flags;
+    int (*crl_init) (X509_CRL *crl);
+    int (*crl_free) (X509_CRL *crl);
+    int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
+                       ASN1_INTEGER *ser, X509_NAME *issuer);
+    int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
+};
+
+static int X509_REVOKED_cmp(const X509_REVOKED **a, const X509_REVOKED **b);
+static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);
+
+ASN1_SEQUENCE(X509_REVOKED) = {
+        ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
+        ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
+} ASN1_SEQUENCE_END(X509_REVOKED)
+
+static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
+static int def_crl_lookup(X509_CRL *crl,
+                          X509_REVOKED **ret, ASN1_INTEGER *serial,
+                          X509_NAME *issuer);
+
+static const X509_CRL_METHOD int_crl_meth = {
+    0,
+    0, 0,
+    def_crl_lookup,
+    def_crl_verify
+};
+
+static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
+
+/*
+ * The X509_CRL_INFO structure needs a bit of customisation. Since we cache
+ * the original encoding the signature wont be affected by reordering of the
+ * revoked field.
+ */
+static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                      void *exarg)
+{
+    X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;
+
+    if (!a || !a->revoked)
+        return 1;
+    switch (operation) {
+        /*
+         * Just set cmp function here. We don't sort because that would
+         * affect the output of X509_CRL_print().
+         */
+    case ASN1_OP_D2I_POST:
+        (void)sk_X509_REVOKED_set_cmp_func(a->revoked, X509_REVOKED_cmp);
+        break;
+    }
+    return 1;
+}
+
+
+ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
+        ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
+        ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
+        ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
+        ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
+        ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
+} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
+
+/*
+ * Set CRL entry issuer according to CRL certificate issuer extension. Check
+ * for unhandled critical CRL entry extensions.
+ */
+
+static int crl_set_issuers(X509_CRL *crl)
+{
+
+    size_t i, k;
+    int j;
+    GENERAL_NAMES *gens, *gtmp;
+    STACK_OF(X509_REVOKED) *revoked;
+
+    revoked = X509_CRL_get_REVOKED(crl);
+
+    gens = NULL;
+    for (i = 0; i < sk_X509_REVOKED_num(revoked); i++) {
+        X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
+        STACK_OF(X509_EXTENSION) *exts;
+        ASN1_ENUMERATED *reason;
+        X509_EXTENSION *ext;
+        gtmp = X509_REVOKED_get_ext_d2i(rev,
+                                        NID_certificate_issuer, &j, NULL);
+        if (!gtmp && (j != -1)) {
+            crl->flags |= EXFLAG_INVALID;
+            return 1;
+        }
+
+        if (gtmp) {
+            gens = gtmp;
+            if (!crl->issuers) {
+                crl->issuers = sk_GENERAL_NAMES_new_null();
+                if (!crl->issuers)
+                    return 0;
+            }
+            if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
+                return 0;
+        }
+        rev->issuer = gens;
+
+        reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason, &j, NULL);
+        if (!reason && (j != -1)) {
+            crl->flags |= EXFLAG_INVALID;
+            return 1;
+        }
+
+        if (reason) {
+            rev->reason = ASN1_ENUMERATED_get(reason);
+            ASN1_ENUMERATED_free(reason);
+        } else
+            rev->reason = CRL_REASON_NONE;
+
+        /* Check for critical CRL entry extensions */
+
+        exts = rev->extensions;
+
+        for (k = 0; k < sk_X509_EXTENSION_num(exts); k++) {
+            ext = sk_X509_EXTENSION_value(exts, k);
+            if (ext->critical > 0) {
+                if (OBJ_obj2nid(ext->object) == NID_certificate_issuer)
+                    continue;
+                crl->flags |= EXFLAG_CRITICAL;
+                break;
+            }
+        }
+
+    }
+
+    return 1;
+
+}
+
+/*
+ * The X509_CRL structure needs a bit of customisation. Cache some extensions
+ * and hash of the whole CRL.
+ */
+static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                  void *exarg)
+{
+    X509_CRL *crl = (X509_CRL *)*pval;
+    STACK_OF(X509_EXTENSION) *exts;
+    X509_EXTENSION *ext;
+    size_t idx;
+
+    switch (operation) {
+    case ASN1_OP_NEW_POST:
+        crl->idp = NULL;
+        crl->akid = NULL;
+        crl->flags = 0;
+        crl->idp_flags = 0;
+        crl->idp_reasons = CRLDP_ALL_REASONS;
+        crl->meth = default_crl_method;
+        crl->meth_data = NULL;
+        crl->issuers = NULL;
+        crl->crl_number = NULL;
+        crl->base_crl_number = NULL;
+        break;
+
+    case ASN1_OP_D2I_POST:
+        X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
+        crl->idp = X509_CRL_get_ext_d2i(crl,
+                                        NID_issuing_distribution_point, NULL,
+                                        NULL);
+        if (crl->idp)
+            setup_idp(crl, crl->idp);
+
+        crl->akid = X509_CRL_get_ext_d2i(crl,
+                                         NID_authority_key_identifier, NULL,
+                                         NULL);
+
+        crl->crl_number = X509_CRL_get_ext_d2i(crl,
+                                               NID_crl_number, NULL, NULL);
+
+        crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
+                                                    NID_delta_crl, NULL,
+                                                    NULL);
+        /* Delta CRLs must have CRL number */
+        if (crl->base_crl_number && !crl->crl_number)
+            crl->flags |= EXFLAG_INVALID;
+
+        /*
+         * See if we have any unhandled critical CRL extensions and indicate
+         * this in a flag. We only currently handle IDP so anything else
+         * critical sets the flag. This code accesses the X509_CRL structure
+         * directly: applications shouldn't do this.
+         */
+
+        exts = crl->crl->extensions;
+
+        for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++) {
+            int nid;
+            ext = sk_X509_EXTENSION_value(exts, idx);
+            nid = OBJ_obj2nid(ext->object);
+            if (nid == NID_freshest_crl)
+                crl->flags |= EXFLAG_FRESHEST;
+            if (ext->critical > 0) {
+                /* We handle IDP and deltas */
+                if ((nid == NID_issuing_distribution_point)
+                    || (nid == NID_authority_key_identifier)
+                    || (nid == NID_delta_crl))
+                    continue;
+                crl->flags |= EXFLAG_CRITICAL;
+                break;
+            }
+        }
+
+        if (!crl_set_issuers(crl))
+            return 0;
+
+        if (crl->meth->crl_init) {
+            if (crl->meth->crl_init(crl) == 0)
+                return 0;
+        }
+        break;
+
+    case ASN1_OP_FREE_POST:
+        /* |crl->meth| may be NULL if constructing the object failed before
+         * |ASN1_OP_NEW_POST| was run. */
+        if (crl->meth && crl->meth->crl_free) {
+            if (!crl->meth->crl_free(crl))
+                return 0;
+        }
+        if (crl->akid)
+            AUTHORITY_KEYID_free(crl->akid);
+        if (crl->idp)
+            ISSUING_DIST_POINT_free(crl->idp);
+        ASN1_INTEGER_free(crl->crl_number);
+        ASN1_INTEGER_free(crl->base_crl_number);
+        sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
+        break;
+    }
+    return 1;
+}
+
+/* Convert IDP into a more convenient form */
+
+static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
+{
+    int idp_only = 0;
+    /* Set various flags according to IDP */
+    crl->idp_flags |= IDP_PRESENT;
+    if (idp->onlyuser > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYUSER;
+    }
+    if (idp->onlyCA > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYCA;
+    }
+    if (idp->onlyattr > 0) {
+        idp_only++;
+        crl->idp_flags |= IDP_ONLYATTR;
+    }
+
+    if (idp_only > 1)
+        crl->idp_flags |= IDP_INVALID;
+
+    if (idp->indirectCRL > 0)
+        crl->idp_flags |= IDP_INDIRECT;
+
+    if (idp->onlysomereasons) {
+        crl->idp_flags |= IDP_REASONS;
+        if (idp->onlysomereasons->length > 0)
+            crl->idp_reasons = idp->onlysomereasons->data[0];
+        if (idp->onlysomereasons->length > 1)
+            crl->idp_reasons |= (idp->onlysomereasons->data[1] << 8);
+        crl->idp_reasons &= CRLDP_ALL_REASONS;
+    }
+
+    DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
+}
+
+ASN1_SEQUENCE_ref(X509_CRL, crl_cb) = {
+        ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
+        ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
+IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
+
+static int X509_REVOKED_cmp(const X509_REVOKED **a, const X509_REVOKED **b)
+{
+    return (ASN1_STRING_cmp((ASN1_STRING *)(*a)->serialNumber,
+                            (ASN1_STRING *)(*b)->serialNumber));
+}
+
+int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
+{
+    X509_CRL_INFO *inf;
+    inf = crl->crl;
+    if (!inf->revoked)
+        inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
+    if (!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    inf->enc.modified = 1;
+    return 1;
+}
+
+int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
+{
+    if (crl->meth->crl_verify)
+        return crl->meth->crl_verify(crl, r);
+    return 0;
+}
+
+int X509_CRL_get0_by_serial(X509_CRL *crl,
+                            X509_REVOKED **ret, ASN1_INTEGER *serial)
+{
+    if (crl->meth->crl_lookup)
+        return crl->meth->crl_lookup(crl, ret, serial, NULL);
+    return 0;
+}
+
+int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
+{
+    if (crl->meth->crl_lookup)
+        return crl->meth->crl_lookup(crl, ret,
+                                     X509_get_serialNumber(x),
+                                     X509_get_issuer_name(x));
+    return 0;
+}
+
+static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
+{
+    return (ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
+                             crl->sig_alg, crl->signature, crl->crl, r));
+}
+
+static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
+                                    X509_REVOKED *rev)
+{
+    size_t i;
+
+    if (!rev->issuer) {
+        if (!nm)
+            return 1;
+        if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
+            return 1;
+        return 0;
+    }
+
+    if (!nm)
+        nm = X509_CRL_get_issuer(crl);
+
+    for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
+        if (gen->type != GEN_DIRNAME)
+            continue;
+        if (!X509_NAME_cmp(nm, gen->d.directoryName))
+            return 1;
+    }
+    return 0;
+
+}
+
+static struct CRYPTO_STATIC_MUTEX g_crl_sort_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+static int def_crl_lookup(X509_CRL *crl,
+                          X509_REVOKED **ret, ASN1_INTEGER *serial,
+                          X509_NAME *issuer)
+{
+    X509_REVOKED rtmp, *rev;
+    size_t idx;
+    rtmp.serialNumber = serial;
+    /*
+     * Sort revoked into serial number order if not already sorted. Do this
+     * under a lock to avoid race condition.
+     */
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_crl_sort_lock);
+    const int is_sorted = sk_X509_REVOKED_is_sorted(crl->crl->revoked);
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_crl_sort_lock);
+
+    if (!is_sorted) {
+        CRYPTO_STATIC_MUTEX_lock_write(&g_crl_sort_lock);
+        if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked)) {
+            sk_X509_REVOKED_sort(crl->crl->revoked);
+        }
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_crl_sort_lock);
+    }
+
+    if (!sk_X509_REVOKED_find(crl->crl->revoked, &idx, &rtmp))
+        return 0;
+    /* Need to look for matching name */
+    for (; idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++) {
+        rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
+        if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
+            return 0;
+        if (crl_revoked_issuer_match(crl, issuer, rev)) {
+            if (ret)
+                *ret = rev;
+            if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
+                return 2;
+            return 1;
+        }
+    }
+    return 0;
+}
+
+void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
+{
+    if (meth == NULL)
+        default_crl_method = &int_crl_meth;
+    else
+        default_crl_method = meth;
+}
+
+X509_CRL_METHOD *X509_CRL_METHOD_new(int (*crl_init) (X509_CRL *crl),
+                                     int (*crl_free) (X509_CRL *crl),
+                                     int (*crl_lookup) (X509_CRL *crl,
+                                                        X509_REVOKED **ret,
+                                                        ASN1_INTEGER *ser,
+                                                        X509_NAME *issuer),
+                                     int (*crl_verify) (X509_CRL *crl,
+                                                        EVP_PKEY *pk))
+{
+    X509_CRL_METHOD *m;
+    m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
+    if (!m)
+        return NULL;
+    m->crl_init = crl_init;
+    m->crl_free = crl_free;
+    m->crl_lookup = crl_lookup;
+    m->crl_verify = crl_verify;
+    m->flags = X509_CRL_METHOD_DYNAMIC;
+    return m;
+}
+
+void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
+{
+    if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
+        return;
+    OPENSSL_free(m);
+}
+
+void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
+{
+    crl->meth_data = dat;
+}
+
+void *X509_CRL_get_meth_data(X509_CRL *crl)
+{
+    return crl->meth_data;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
+
+IMPLEMENT_ASN1_SET_OF(X509_CRL)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c
new file mode 100644
index 0000000..ca653e8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c	
@@ -0,0 +1,75 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/x509.h>
+
+
+ASN1_SEQUENCE(X509_EXTENSION) = {
+        ASN1_SIMPLE(X509_EXTENSION, object, ASN1_OBJECT),
+        ASN1_OPT(X509_EXTENSION, critical, ASN1_BOOLEAN),
+        ASN1_SIMPLE(X509_EXTENSION, value, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(X509_EXTENSION)
+
+ASN1_ITEM_TEMPLATE(X509_EXTENSIONS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Extension, X509_EXTENSION)
+ASN1_ITEM_TEMPLATE_END(X509_EXTENSIONS)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_EXTENSION)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_EXTENSIONS, X509_EXTENSIONS, X509_EXTENSIONS)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c.grpc_back
new file mode 100644
index 0000000..36403e4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_exten.c.grpc_back	
@@ -0,0 +1,75 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/cipher.h>
+#include <openssl/x509.h>
+
+
+ASN1_SEQUENCE(X509_EXTENSION) = {
+        ASN1_SIMPLE(X509_EXTENSION, object, ASN1_OBJECT),
+        ASN1_OPT(X509_EXTENSION, critical, ASN1_BOOLEAN),
+        ASN1_SIMPLE(X509_EXTENSION, value, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(X509_EXTENSION)
+
+ASN1_ITEM_TEMPLATE(X509_EXTENSIONS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Extension, X509_EXTENSION)
+ASN1_ITEM_TEMPLATE_END(X509_EXTENSIONS)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_EXTENSION)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_EXTENSIONS, X509_EXTENSIONS, X509_EXTENSIONS)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c
new file mode 100644
index 0000000..4217eb1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c	
@@ -0,0 +1,98 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+X509_INFO *X509_INFO_new(void)
+{
+    X509_INFO *ret = NULL;
+
+    ret = (X509_INFO *)OPENSSL_malloc(sizeof(X509_INFO));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+
+    ret->enc_cipher.cipher = NULL;
+    ret->enc_len = 0;
+    ret->enc_data = NULL;
+
+    ret->x509 = NULL;
+    ret->crl = NULL;
+    ret->x_pkey = NULL;
+    return (ret);
+}
+
+void X509_INFO_free(X509_INFO *x)
+{
+    if (x == NULL)
+        return;
+
+    if (x->x509 != NULL)
+        X509_free(x->x509);
+    if (x->crl != NULL)
+        X509_CRL_free(x->crl);
+    if (x->x_pkey != NULL)
+        X509_PKEY_free(x->x_pkey);
+    if (x->enc_data != NULL)
+        OPENSSL_free(x->enc_data);
+    OPENSSL_free(x);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c.grpc_back
new file mode 100644
index 0000000..177cd0e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_info.c.grpc_back	
@@ -0,0 +1,98 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+X509_INFO *X509_INFO_new(void)
+{
+    X509_INFO *ret = NULL;
+
+    ret = (X509_INFO *)OPENSSL_malloc(sizeof(X509_INFO));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
+
+    ret->enc_cipher.cipher = NULL;
+    ret->enc_len = 0;
+    ret->enc_data = NULL;
+
+    ret->x509 = NULL;
+    ret->crl = NULL;
+    ret->x_pkey = NULL;
+    return (ret);
+}
+
+void X509_INFO_free(X509_INFO *x)
+{
+    if (x == NULL)
+        return;
+
+    if (x->x509 != NULL)
+        X509_free(x->x509);
+    if (x->crl != NULL)
+        X509_CRL_free(x->crl);
+    if (x->x_pkey != NULL)
+        X509_PKEY_free(x->x_pkey);
+    if (x->enc_data != NULL)
+        OPENSSL_free(x->enc_data);
+    OPENSSL_free(x);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c
new file mode 100644
index 0000000..5775c56
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c	
@@ -0,0 +1,554 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+#include "../asn1/asn1_locl.h"
+#include "../internal.h"
+
+
+typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
+DEFINE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
+
+/*
+ * Maximum length of X509_NAME: much larger than anything we should
+ * ever see in practice.
+ */
+
+#define X509_NAME_MAX (1024 * 1024)
+
+static int x509_name_ex_d2i(ASN1_VALUE **val,
+                            const unsigned char **in, long len,
+                            const ASN1_ITEM *it,
+                            int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
+                            const ASN1_ITEM *it, int tag, int aclass);
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
+static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
+
+static int x509_name_encode(X509_NAME *a);
+static int x509_name_canon(X509_NAME *a);
+static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in);
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * intname,
+                          unsigned char **in);
+
+ASN1_SEQUENCE(X509_NAME_ENTRY) = {
+        ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
+        ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
+} ASN1_SEQUENCE_END(X509_NAME_ENTRY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
+
+/*
+ * For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } so
+ * declare two template wrappers for this
+ */
+
+ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
+
+ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
+
+/*
+ * Normally that's where it would end: we'd have two nested STACK structures
+ * representing the ASN1. Unfortunately X509_NAME uses a completely different
+ * form and caches encodings so we have to process the internal form and
+ * convert to the external form.
+ */
+
+static const ASN1_EXTERN_FUNCS x509_name_ff = {
+    NULL,
+    x509_name_ex_new,
+    x509_name_ex_free,
+    0,                          /* Default clear behaviour is OK */
+    x509_name_ex_d2i,
+    x509_name_ex_i2d,
+    NULL,
+};
+
+IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
+
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
+{
+    X509_NAME *ret = NULL;
+    ret = OPENSSL_malloc(sizeof(X509_NAME));
+    if (!ret)
+        goto memerr;
+    if ((ret->entries = sk_X509_NAME_ENTRY_new_null()) == NULL)
+        goto memerr;
+    if ((ret->bytes = BUF_MEM_new()) == NULL)
+        goto memerr;
+    ret->canon_enc = NULL;
+    ret->canon_enclen = 0;
+    ret->modified = 1;
+    *val = (ASN1_VALUE *)ret;
+    return 1;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    if (ret) {
+        if (ret->entries)
+            sk_X509_NAME_ENTRY_free(ret->entries);
+        OPENSSL_free(ret);
+    }
+    return 0;
+}
+
+static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    X509_NAME *a;
+    if (!pval || !*pval)
+        return;
+    a = (X509_NAME *)*pval;
+
+    BUF_MEM_free(a->bytes);
+    sk_X509_NAME_ENTRY_pop_free(a->entries, X509_NAME_ENTRY_free);
+    if (a->canon_enc)
+        OPENSSL_free(a->canon_enc);
+    OPENSSL_free(a);
+    *pval = NULL;
+}
+
+static void local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+    sk_X509_NAME_ENTRY_free(ne);
+}
+
+static void local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+    sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
+}
+
+static int x509_name_ex_d2i(ASN1_VALUE **val,
+                            const unsigned char **in, long len,
+                            const ASN1_ITEM *it, int tag, int aclass,
+                            char opt, ASN1_TLC *ctx)
+{
+    const unsigned char *p = *in, *q;
+    union {
+        STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+        ASN1_VALUE *a;
+    } intname = {
+        NULL
+    };
+    union {
+        X509_NAME *x;
+        ASN1_VALUE *a;
+    } nm = {
+        NULL
+    };
+    size_t i, j;
+    int ret;
+    STACK_OF(X509_NAME_ENTRY) *entries;
+    X509_NAME_ENTRY *entry;
+    /* Bound the size of an X509_NAME we are willing to parse. */
+    if (len > X509_NAME_MAX) {
+        len = X509_NAME_MAX;
+    }
+    q = p;
+
+    /* Get internal representation of Name */
+    ret = ASN1_item_ex_d2i(&intname.a,
+                           &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
+                           tag, aclass, opt, ctx);
+
+    if (ret <= 0)
+        return ret;
+
+    if (*val)
+        x509_name_ex_free(val, NULL);
+    if (!x509_name_ex_new(&nm.a, NULL))
+        goto err;
+    /* We've decoded it: now cache encoding */
+    if (!BUF_MEM_grow(nm.x->bytes, p - q))
+        goto err;
+    OPENSSL_memcpy(nm.x->bytes->data, q, p - q);
+
+    /* Convert internal representation to X509_NAME structure */
+    for (i = 0; i < sk_STACK_OF_X509_NAME_ENTRY_num(intname.s); i++) {
+        entries = sk_STACK_OF_X509_NAME_ENTRY_value(intname.s, i);
+        for (j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
+            entry = sk_X509_NAME_ENTRY_value(entries, j);
+            entry->set = i;
+            if (!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
+                goto err;
+            (void)sk_X509_NAME_ENTRY_set(entries, j, NULL);
+        }
+    }
+    ret = x509_name_canon(nm.x);
+    if (!ret)
+        goto err;
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    nm.x->modified = 0;
+    *val = nm.a;
+    *in = p;
+    return ret;
+ err:
+    if (nm.x != NULL)
+        X509_NAME_free(nm.x);
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_pop_free);
+    OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+    return 0;
+}
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
+                            const ASN1_ITEM *it, int tag, int aclass)
+{
+    int ret;
+    X509_NAME *a = (X509_NAME *)*val;
+    if (a->modified) {
+        ret = x509_name_encode(a);
+        if (ret < 0)
+            return ret;
+        ret = x509_name_canon(a);
+        if (ret < 0)
+            return ret;
+    }
+    ret = a->bytes->length;
+    if (out != NULL) {
+        OPENSSL_memcpy(*out, a->bytes->data, ret);
+        *out += ret;
+    }
+    return ret;
+}
+
+static int x509_name_encode(X509_NAME *a)
+{
+    union {
+        STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+        ASN1_VALUE *a;
+    } intname = {
+        NULL
+    };
+    int len;
+    unsigned char *p;
+    STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+    X509_NAME_ENTRY *entry;
+    int set = -1;
+    size_t i;
+    intname.s = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+    if (!intname.s)
+        goto memerr;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+        if (entry->set != set) {
+            entries = sk_X509_NAME_ENTRY_new_null();
+            if (!entries)
+                goto memerr;
+            if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname.s, entries)) {
+                sk_X509_NAME_ENTRY_free(entries);
+                goto memerr;
+            }
+            set = entry->set;
+        }
+        if (!sk_X509_NAME_ENTRY_push(entries, entry))
+            goto memerr;
+    }
+    len = ASN1_item_ex_i2d(&intname.a, NULL,
+                           ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+    if (!BUF_MEM_grow(a->bytes, len))
+        goto memerr;
+    p = (unsigned char *)a->bytes->data;
+    ASN1_item_ex_i2d(&intname.a,
+                     &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    a->modified = 0;
+    return len;
+ memerr:
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    return -1;
+}
+
+/*
+ * This function generates the canonical encoding of the Name structure. In
+ * it all strings are converted to UTF8, leading, trailing and multiple
+ * spaces collapsed, converted to lower case and the leading SEQUENCE header
+ * removed. In future we could also normalize the UTF8 too. By doing this
+ * comparison of Name structures can be rapidly perfomed by just using
+ * OPENSSL_memcmp() of the canonical encoding. By omitting the leading SEQUENCE name
+ * constraints of type dirName can also be checked with a simple OPENSSL_memcmp().
+ */
+
+static int x509_name_canon(X509_NAME *a)
+{
+    unsigned char *p;
+    STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname = NULL;
+    STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+    X509_NAME_ENTRY *entry, *tmpentry = NULL;
+    int set = -1, ret = 0, len;
+    size_t i;
+
+    if (a->canon_enc) {
+        OPENSSL_free(a->canon_enc);
+        a->canon_enc = NULL;
+    }
+    /* Special case: empty X509_NAME => null encoding */
+    if (sk_X509_NAME_ENTRY_num(a->entries) == 0) {
+        a->canon_enclen = 0;
+        return 1;
+    }
+    intname = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+    if (!intname)
+        goto err;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+        if (entry->set != set) {
+            entries = sk_X509_NAME_ENTRY_new_null();
+            if (!entries)
+                goto err;
+            if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname, entries)) {
+                sk_X509_NAME_ENTRY_free(entries);
+                goto err;
+            }
+            set = entry->set;
+        }
+        tmpentry = X509_NAME_ENTRY_new();
+        if (tmpentry == NULL)
+            goto err;
+        tmpentry->object = OBJ_dup(entry->object);
+        if (!asn1_string_canon(tmpentry->value, entry->value))
+            goto err;
+        if (!sk_X509_NAME_ENTRY_push(entries, tmpentry))
+            goto err;
+        tmpentry = NULL;
+    }
+
+    /* Finally generate encoding */
+
+    len = i2d_name_canon(intname, NULL);
+    if (len < 0) {
+        goto err;
+    }
+    a->canon_enclen = len;
+
+    p = OPENSSL_malloc(a->canon_enclen);
+
+    if (!p)
+        goto err;
+
+    a->canon_enc = p;
+
+    i2d_name_canon(intname, &p);
+
+    ret = 1;
+
+ err:
+
+    if (tmpentry)
+        X509_NAME_ENTRY_free(tmpentry);
+    if (intname)
+        sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname,
+                                             local_sk_X509_NAME_ENTRY_pop_free);
+    return ret;
+}
+
+/* Bitmap of all the types of string that will be canonicalized. */
+
+#define ASN1_MASK_CANON \
+        (B_ASN1_UTF8STRING | B_ASN1_BMPSTRING | B_ASN1_UNIVERSALSTRING \
+        | B_ASN1_PRINTABLESTRING | B_ASN1_T61STRING | B_ASN1_IA5STRING \
+        | B_ASN1_VISIBLESTRING)
+
+static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in)
+{
+    unsigned char *to, *from;
+    int len, i;
+
+    /* If type not in bitmask just copy string across */
+    if (!(ASN1_tag2bit(in->type) & ASN1_MASK_CANON)) {
+        if (!ASN1_STRING_copy(out, in))
+            return 0;
+        return 1;
+    }
+
+    out->type = V_ASN1_UTF8STRING;
+    out->length = ASN1_STRING_to_UTF8(&out->data, in);
+    if (out->length == -1)
+        return 0;
+
+    to = out->data;
+    from = to;
+
+    len = out->length;
+
+    /*
+     * Convert string in place to canonical form. Ultimately we may need to
+     * handle a wider range of characters but for now ignore anything with
+     * MSB set and rely on the isspace() and tolower() functions.
+     */
+
+    /* Ignore leading spaces */
+    while ((len > 0) && !(*from & 0x80) && isspace(*from)) {
+        from++;
+        len--;
+    }
+
+    to = from + len;
+
+    /* Ignore trailing spaces */
+    while ((len > 0) && !(to[-1] & 0x80) && isspace(to[-1])) {
+        to--;
+        len--;
+    }
+
+    to = out->data;
+
+    i = 0;
+    while (i < len) {
+        /* If MSB set just copy across */
+        if (*from & 0x80) {
+            *to++ = *from++;
+            i++;
+        }
+        /* Collapse multiple spaces */
+        else if (isspace(*from)) {
+            /* Copy one space across */
+            *to++ = ' ';
+            /*
+             * Ignore subsequent spaces. Note: don't need to check len here
+             * because we know the last character is a non-space so we can't
+             * overflow.
+             */
+            do {
+                from++;
+                i++;
+            }
+            while (!(*from & 0x80) && isspace(*from));
+        } else {
+            *to++ = OPENSSL_tolower(*from);
+            from++;
+            i++;
+        }
+    }
+
+    out->length = to - out->data;
+
+    return 1;
+
+}
+
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * _intname,
+                          unsigned char **in)
+{
+    int len, ltmp;
+    size_t i;
+    ASN1_VALUE *v;
+    STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
+
+    len = 0;
+    for (i = 0; i < sk_ASN1_VALUE_num(intname); i++) {
+        v = sk_ASN1_VALUE_value(intname, i);
+        ltmp = ASN1_item_ex_i2d(&v, in,
+                                ASN1_ITEM_rptr(X509_NAME_ENTRIES), -1, -1);
+        if (ltmp < 0)
+            return ltmp;
+        len += ltmp;
+    }
+    return len;
+}
+
+int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
+{
+    if ((name = X509_NAME_dup(name)) == NULL)
+        return 0;
+    X509_NAME_free(*xn);
+    *xn = name;
+    return 1;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)
+
+int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
+{
+    return ne->set;
+}
+
+int X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder,
+                       size_t *pderlen)
+{
+    /* Make sure encoding is valid */
+    if (i2d_X509_NAME(nm, NULL) <= 0)
+        return 0;
+    if (pder != NULL)
+        *pder = (unsigned char *)nm->bytes->data;
+    if (pderlen != NULL)
+        *pderlen = nm->bytes->length;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c.grpc_back
new file mode 100644
index 0000000..7824100
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_name.c.grpc_back	
@@ -0,0 +1,554 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <ctype.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+#include "../asn1/asn1_locl.h"
+#include "../internal.h"
+
+
+typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
+DEFINE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
+
+/*
+ * Maximum length of X509_NAME: much larger than anything we should
+ * ever see in practice.
+ */
+
+#define X509_NAME_MAX (1024 * 1024)
+
+static int x509_name_ex_d2i(ASN1_VALUE **val,
+                            const unsigned char **in, long len,
+                            const ASN1_ITEM *it,
+                            int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
+                            const ASN1_ITEM *it, int tag, int aclass);
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
+static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
+
+static int x509_name_encode(X509_NAME *a);
+static int x509_name_canon(X509_NAME *a);
+static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in);
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * intname,
+                          unsigned char **in);
+
+ASN1_SEQUENCE(X509_NAME_ENTRY) = {
+        ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
+        ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
+} ASN1_SEQUENCE_END(X509_NAME_ENTRY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
+
+/*
+ * For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } so
+ * declare two template wrappers for this
+ */
+
+ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
+
+ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
+
+/*
+ * Normally that's where it would end: we'd have two nested STACK structures
+ * representing the ASN1. Unfortunately X509_NAME uses a completely different
+ * form and caches encodings so we have to process the internal form and
+ * convert to the external form.
+ */
+
+static const ASN1_EXTERN_FUNCS x509_name_ff = {
+    NULL,
+    x509_name_ex_new,
+    x509_name_ex_free,
+    0,                          /* Default clear behaviour is OK */
+    x509_name_ex_d2i,
+    x509_name_ex_i2d,
+    NULL,
+};
+
+IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
+
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
+{
+    X509_NAME *ret = NULL;
+    ret = OPENSSL_malloc(sizeof(X509_NAME));
+    if (!ret)
+        goto memerr;
+    if ((ret->entries = sk_X509_NAME_ENTRY_new_null()) == NULL)
+        goto memerr;
+    if ((ret->bytes = BUF_MEM_new()) == NULL)
+        goto memerr;
+    ret->canon_enc = NULL;
+    ret->canon_enclen = 0;
+    ret->modified = 1;
+    *val = (ASN1_VALUE *)ret;
+    return 1;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    if (ret) {
+        if (ret->entries)
+            sk_X509_NAME_ENTRY_free(ret->entries);
+        OPENSSL_free(ret);
+    }
+    return 0;
+}
+
+static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    X509_NAME *a;
+    if (!pval || !*pval)
+        return;
+    a = (X509_NAME *)*pval;
+
+    BUF_MEM_free(a->bytes);
+    sk_X509_NAME_ENTRY_pop_free(a->entries, X509_NAME_ENTRY_free);
+    if (a->canon_enc)
+        OPENSSL_free(a->canon_enc);
+    OPENSSL_free(a);
+    *pval = NULL;
+}
+
+static void local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+    sk_X509_NAME_ENTRY_free(ne);
+}
+
+static void local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+    sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
+}
+
+static int x509_name_ex_d2i(ASN1_VALUE **val,
+                            const unsigned char **in, long len,
+                            const ASN1_ITEM *it, int tag, int aclass,
+                            char opt, ASN1_TLC *ctx)
+{
+    const unsigned char *p = *in, *q;
+    union {
+        STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+        ASN1_VALUE *a;
+    } intname = {
+        NULL
+    };
+    union {
+        X509_NAME *x;
+        ASN1_VALUE *a;
+    } nm = {
+        NULL
+    };
+    size_t i, j;
+    int ret;
+    STACK_OF(X509_NAME_ENTRY) *entries;
+    X509_NAME_ENTRY *entry;
+    /* Bound the size of an X509_NAME we are willing to parse. */
+    if (len > X509_NAME_MAX) {
+        len = X509_NAME_MAX;
+    }
+    q = p;
+
+    /* Get internal representation of Name */
+    ret = ASN1_item_ex_d2i(&intname.a,
+                           &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
+                           tag, aclass, opt, ctx);
+
+    if (ret <= 0)
+        return ret;
+
+    if (*val)
+        x509_name_ex_free(val, NULL);
+    if (!x509_name_ex_new(&nm.a, NULL))
+        goto err;
+    /* We've decoded it: now cache encoding */
+    if (!BUF_MEM_grow(nm.x->bytes, p - q))
+        goto err;
+    OPENSSL_memcpy(nm.x->bytes->data, q, p - q);
+
+    /* Convert internal representation to X509_NAME structure */
+    for (i = 0; i < sk_STACK_OF_X509_NAME_ENTRY_num(intname.s); i++) {
+        entries = sk_STACK_OF_X509_NAME_ENTRY_value(intname.s, i);
+        for (j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
+            entry = sk_X509_NAME_ENTRY_value(entries, j);
+            entry->set = i;
+            if (!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
+                goto err;
+            (void)sk_X509_NAME_ENTRY_set(entries, j, NULL);
+        }
+    }
+    ret = x509_name_canon(nm.x);
+    if (!ret)
+        goto err;
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    nm.x->modified = 0;
+    *val = nm.a;
+    *in = p;
+    return ret;
+ err:
+    if (nm.x != NULL)
+        X509_NAME_free(nm.x);
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_pop_free);
+    OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
+    return 0;
+}
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
+                            const ASN1_ITEM *it, int tag, int aclass)
+{
+    int ret;
+    X509_NAME *a = (X509_NAME *)*val;
+    if (a->modified) {
+        ret = x509_name_encode(a);
+        if (ret < 0)
+            return ret;
+        ret = x509_name_canon(a);
+        if (ret < 0)
+            return ret;
+    }
+    ret = a->bytes->length;
+    if (out != NULL) {
+        OPENSSL_memcpy(*out, a->bytes->data, ret);
+        *out += ret;
+    }
+    return ret;
+}
+
+static int x509_name_encode(X509_NAME *a)
+{
+    union {
+        STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+        ASN1_VALUE *a;
+    } intname = {
+        NULL
+    };
+    int len;
+    unsigned char *p;
+    STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+    X509_NAME_ENTRY *entry;
+    int set = -1;
+    size_t i;
+    intname.s = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+    if (!intname.s)
+        goto memerr;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+        if (entry->set != set) {
+            entries = sk_X509_NAME_ENTRY_new_null();
+            if (!entries)
+                goto memerr;
+            if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname.s, entries)) {
+                sk_X509_NAME_ENTRY_free(entries);
+                goto memerr;
+            }
+            set = entry->set;
+        }
+        if (!sk_X509_NAME_ENTRY_push(entries, entry))
+            goto memerr;
+    }
+    len = ASN1_item_ex_i2d(&intname.a, NULL,
+                           ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+    if (!BUF_MEM_grow(a->bytes, len))
+        goto memerr;
+    p = (unsigned char *)a->bytes->data;
+    ASN1_item_ex_i2d(&intname.a,
+                     &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    a->modified = 0;
+    return len;
+ memerr:
+    sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+                                         local_sk_X509_NAME_ENTRY_free);
+    OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+    return -1;
+}
+
+/*
+ * This function generates the canonical encoding of the Name structure. In
+ * it all strings are converted to UTF8, leading, trailing and multiple
+ * spaces collapsed, converted to lower case and the leading SEQUENCE header
+ * removed. In future we could also normalize the UTF8 too. By doing this
+ * comparison of Name structures can be rapidly perfomed by just using
+ * OPENSSL_memcmp() of the canonical encoding. By omitting the leading SEQUENCE name
+ * constraints of type dirName can also be checked with a simple OPENSSL_memcmp().
+ */
+
+static int x509_name_canon(X509_NAME *a)
+{
+    unsigned char *p;
+    STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname = NULL;
+    STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+    X509_NAME_ENTRY *entry, *tmpentry = NULL;
+    int set = -1, ret = 0, len;
+    size_t i;
+
+    if (a->canon_enc) {
+        OPENSSL_free(a->canon_enc);
+        a->canon_enc = NULL;
+    }
+    /* Special case: empty X509_NAME => null encoding */
+    if (sk_X509_NAME_ENTRY_num(a->entries) == 0) {
+        a->canon_enclen = 0;
+        return 1;
+    }
+    intname = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+    if (!intname)
+        goto err;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+        entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+        if (entry->set != set) {
+            entries = sk_X509_NAME_ENTRY_new_null();
+            if (!entries)
+                goto err;
+            if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname, entries)) {
+                sk_X509_NAME_ENTRY_free(entries);
+                goto err;
+            }
+            set = entry->set;
+        }
+        tmpentry = X509_NAME_ENTRY_new();
+        if (tmpentry == NULL)
+            goto err;
+        tmpentry->object = OBJ_dup(entry->object);
+        if (!asn1_string_canon(tmpentry->value, entry->value))
+            goto err;
+        if (!sk_X509_NAME_ENTRY_push(entries, tmpentry))
+            goto err;
+        tmpentry = NULL;
+    }
+
+    /* Finally generate encoding */
+
+    len = i2d_name_canon(intname, NULL);
+    if (len < 0) {
+        goto err;
+    }
+    a->canon_enclen = len;
+
+    p = OPENSSL_malloc(a->canon_enclen);
+
+    if (!p)
+        goto err;
+
+    a->canon_enc = p;
+
+    i2d_name_canon(intname, &p);
+
+    ret = 1;
+
+ err:
+
+    if (tmpentry)
+        X509_NAME_ENTRY_free(tmpentry);
+    if (intname)
+        sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname,
+                                             local_sk_X509_NAME_ENTRY_pop_free);
+    return ret;
+}
+
+/* Bitmap of all the types of string that will be canonicalized. */
+
+#define ASN1_MASK_CANON \
+        (B_ASN1_UTF8STRING | B_ASN1_BMPSTRING | B_ASN1_UNIVERSALSTRING \
+        | B_ASN1_PRINTABLESTRING | B_ASN1_T61STRING | B_ASN1_IA5STRING \
+        | B_ASN1_VISIBLESTRING)
+
+static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in)
+{
+    unsigned char *to, *from;
+    int len, i;
+
+    /* If type not in bitmask just copy string across */
+    if (!(ASN1_tag2bit(in->type) & ASN1_MASK_CANON)) {
+        if (!ASN1_STRING_copy(out, in))
+            return 0;
+        return 1;
+    }
+
+    out->type = V_ASN1_UTF8STRING;
+    out->length = ASN1_STRING_to_UTF8(&out->data, in);
+    if (out->length == -1)
+        return 0;
+
+    to = out->data;
+    from = to;
+
+    len = out->length;
+
+    /*
+     * Convert string in place to canonical form. Ultimately we may need to
+     * handle a wider range of characters but for now ignore anything with
+     * MSB set and rely on the isspace() and tolower() functions.
+     */
+
+    /* Ignore leading spaces */
+    while ((len > 0) && !(*from & 0x80) && isspace(*from)) {
+        from++;
+        len--;
+    }
+
+    to = from + len;
+
+    /* Ignore trailing spaces */
+    while ((len > 0) && !(to[-1] & 0x80) && isspace(to[-1])) {
+        to--;
+        len--;
+    }
+
+    to = out->data;
+
+    i = 0;
+    while (i < len) {
+        /* If MSB set just copy across */
+        if (*from & 0x80) {
+            *to++ = *from++;
+            i++;
+        }
+        /* Collapse multiple spaces */
+        else if (isspace(*from)) {
+            /* Copy one space across */
+            *to++ = ' ';
+            /*
+             * Ignore subsequent spaces. Note: don't need to check len here
+             * because we know the last character is a non-space so we can't
+             * overflow.
+             */
+            do {
+                from++;
+                i++;
+            }
+            while (!(*from & 0x80) && isspace(*from));
+        } else {
+            *to++ = OPENSSL_tolower(*from);
+            from++;
+            i++;
+        }
+    }
+
+    out->length = to - out->data;
+
+    return 1;
+
+}
+
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * _intname,
+                          unsigned char **in)
+{
+    int len, ltmp;
+    size_t i;
+    ASN1_VALUE *v;
+    STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
+
+    len = 0;
+    for (i = 0; i < sk_ASN1_VALUE_num(intname); i++) {
+        v = sk_ASN1_VALUE_value(intname, i);
+        ltmp = ASN1_item_ex_i2d(&v, in,
+                                ASN1_ITEM_rptr(X509_NAME_ENTRIES), -1, -1);
+        if (ltmp < 0)
+            return ltmp;
+        len += ltmp;
+    }
+    return len;
+}
+
+int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
+{
+    if ((name = X509_NAME_dup(name)) == NULL)
+        return 0;
+    X509_NAME_free(*xn);
+    *xn = name;
+    return 1;
+}
+
+IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)
+
+int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
+{
+    return ne->set;
+}
+
+int X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder,
+                       size_t *pderlen)
+{
+    /* Make sure encoding is valid */
+    if (i2d_X509_NAME(nm, NULL) <= 0)
+        return 0;
+    if (pder != NULL)
+        *pder = (unsigned char *)nm->bytes->data;
+    if (pderlen != NULL)
+        *pderlen = nm->bytes->length;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c
new file mode 100644
index 0000000..126560d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c	
@@ -0,0 +1,106 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+
+X509_PKEY *X509_PKEY_new(void)
+{
+    X509_PKEY *ret = OPENSSL_malloc(sizeof(X509_PKEY));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    OPENSSL_memset(ret, 0, sizeof(X509_PKEY));
+
+    ret->enc_algor = X509_ALGOR_new();
+    if (ret->enc_algor == NULL)
+        goto err;
+    ret->enc_pkey = M_ASN1_OCTET_STRING_new();
+    if (ret->enc_pkey == NULL)
+        goto err;
+    return ret;
+
+ err:
+    if (ret != NULL)
+        X509_PKEY_free(ret);
+    return NULL;
+}
+
+void X509_PKEY_free(X509_PKEY *x)
+{
+    if (x == NULL)
+        return;
+
+    if (x->enc_algor != NULL)
+        X509_ALGOR_free(x->enc_algor);
+    if (x->enc_pkey != NULL)
+        M_ASN1_OCTET_STRING_free(x->enc_pkey);
+    if (x->dec_pkey != NULL)
+        EVP_PKEY_free(x->dec_pkey);
+    if ((x->key_data != NULL) && (x->key_free))
+        OPENSSL_free(x->key_data);
+    OPENSSL_free(x);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c.grpc_back
new file mode 100644
index 0000000..8231a24
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pkey.c.grpc_back	
@@ -0,0 +1,106 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+
+X509_PKEY *X509_PKEY_new(void)
+{
+    X509_PKEY *ret = OPENSSL_malloc(sizeof(X509_PKEY));
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    OPENSSL_memset(ret, 0, sizeof(X509_PKEY));
+
+    ret->enc_algor = X509_ALGOR_new();
+    if (ret->enc_algor == NULL)
+        goto err;
+    ret->enc_pkey = M_ASN1_OCTET_STRING_new();
+    if (ret->enc_pkey == NULL)
+        goto err;
+    return ret;
+
+ err:
+    if (ret != NULL)
+        X509_PKEY_free(ret);
+    return NULL;
+}
+
+void X509_PKEY_free(X509_PKEY *x)
+{
+    if (x == NULL)
+        return;
+
+    if (x->enc_algor != NULL)
+        X509_ALGOR_free(x->enc_algor);
+    if (x->enc_pkey != NULL)
+        M_ASN1_OCTET_STRING_free(x->enc_pkey);
+    if (x->dec_pkey != NULL)
+        EVP_PKEY_free(x->dec_pkey);
+    if ((x->key_data != NULL) && (x->key_free))
+        OPENSSL_free(x->key_data);
+    OPENSSL_free(x);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c
new file mode 100644
index 0000000..a948854
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c	
@@ -0,0 +1,368 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/x509.h>
+
+#include <limits.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/thread.h>
+
+#include "../internal.h"
+
+/* Minor tweak to operation: free up EVP_PKEY */
+static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                     void *exarg)
+{
+    if (operation == ASN1_OP_FREE_POST) {
+        X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
+        EVP_PKEY_free(pubkey->pkey);
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
+        ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
+        ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
+
+int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
+{
+    X509_PUBKEY *pk = NULL;
+    uint8_t *spki = NULL;
+    size_t spki_len;
+
+    if (x == NULL)
+        return (0);
+
+    CBB cbb;
+    if (!CBB_init(&cbb, 0) ||
+        !EVP_marshal_public_key(&cbb, pkey) ||
+        !CBB_finish(&cbb, &spki, &spki_len) ||
+        spki_len > LONG_MAX) {
+        CBB_cleanup(&cbb);
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_ENCODE_ERROR);
+        goto error;
+    }
+
+    const uint8_t *p = spki;
+    pk = d2i_X509_PUBKEY(NULL, &p, (long)spki_len);
+    if (pk == NULL || p != spki + spki_len) {
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+        goto error;
+    }
+
+    OPENSSL_free(spki);
+    X509_PUBKEY_free(*x);
+    *x = pk;
+
+    return 1;
+ error:
+    X509_PUBKEY_free(pk);
+    OPENSSL_free(spki);
+    return 0;
+}
+
+/* g_pubkey_lock is used to protect the initialisation of the |pkey| member of
+ * |X509_PUBKEY| objects. Really |X509_PUBKEY| should have a |CRYPTO_once_t|
+ * inside it for this, but |CRYPTO_once_t| is private and |X509_PUBKEY| is
+ * not. */
+static struct CRYPTO_STATIC_MUTEX g_pubkey_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
+{
+    EVP_PKEY *ret = NULL;
+    uint8_t *spki = NULL;
+
+    if (key == NULL)
+        goto error;
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_pubkey_lock);
+    if (key->pkey != NULL) {
+        CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+        EVP_PKEY_up_ref(key->pkey);
+        return key->pkey;
+    }
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+
+    /* Re-encode the |X509_PUBKEY| to DER and parse it. */
+    int spki_len = i2d_X509_PUBKEY(key, &spki);
+    if (spki_len < 0) {
+        goto error;
+    }
+    CBS cbs;
+    CBS_init(&cbs, spki, (size_t)spki_len);
+    ret = EVP_parse_public_key(&cbs);
+    if (ret == NULL || CBS_len(&cbs) != 0) {
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+        goto error;
+    }
+
+    /* Check to see if another thread set key->pkey first */
+    CRYPTO_STATIC_MUTEX_lock_write(&g_pubkey_lock);
+    if (key->pkey) {
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+        EVP_PKEY_free(ret);
+        ret = key->pkey;
+    } else {
+        key->pkey = ret;
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+    }
+
+    OPENSSL_free(spki);
+    EVP_PKEY_up_ref(ret);
+    return ret;
+
+ error:
+    OPENSSL_free(spki);
+    EVP_PKEY_free(ret);
+    return NULL;
+}
+
+/*
+ * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
+ * decode as X509_PUBKEY
+ */
+
+EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length)
+{
+    X509_PUBKEY *xpk;
+    EVP_PKEY *pktmp;
+    xpk = d2i_X509_PUBKEY(NULL, pp, length);
+    if (!xpk)
+        return NULL;
+    pktmp = X509_PUBKEY_get(xpk);
+    X509_PUBKEY_free(xpk);
+    if (!pktmp)
+        return NULL;
+    if (a) {
+        EVP_PKEY_free(*a);
+        *a = pktmp;
+    }
+    return pktmp;
+}
+
+int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp)
+{
+    X509_PUBKEY *xpk = NULL;
+    int ret;
+    if (!a)
+        return 0;
+    if (!X509_PUBKEY_set(&xpk, (EVP_PKEY *)a))
+        return 0;
+    ret = i2d_X509_PUBKEY(xpk, pp);
+    X509_PUBKEY_free(xpk);
+    return ret;
+}
+
+/*
+ * The following are equivalents but which return RSA and DSA keys
+ */
+RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    RSA *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return NULL;
+    key = EVP_PKEY_get1_RSA(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return NULL;
+    *pp = q;
+    if (a) {
+        RSA_free(*a);
+        *a = key;
+    }
+    return key;
+}
+
+int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (!pktmp) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_RSA(pktmp, (RSA *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_DSA
+DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    DSA *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return NULL;
+    key = EVP_PKEY_get1_DSA(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return NULL;
+    *pp = q;
+    if (a) {
+        DSA_free(*a);
+        *a = key;
+    }
+    return key;
+}
+
+int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (!pktmp) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_DSA(pktmp, (DSA *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+#endif
+
+EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    EC_KEY *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return (NULL);
+    key = EVP_PKEY_get1_EC_KEY(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return (NULL);
+    *pp = q;
+    if (a) {
+        EC_KEY_free(*a);
+        *a = key;
+    }
+    return (key);
+}
+
+int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return (0);
+    if ((pktmp = EVP_PKEY_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    EVP_PKEY_set1_EC_KEY(pktmp, (EC_KEY *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return (ret);
+}
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+                           int ptype, void *pval,
+                           unsigned char *penc, int penclen)
+{
+    if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
+        return 0;
+    if (penc) {
+        if (pub->public_key->data)
+            OPENSSL_free(pub->public_key->data);
+        pub->public_key->data = penc;
+        pub->public_key->length = penclen;
+        /* Set number of unused bits to zero */
+        pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+        pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+    }
+    return 1;
+}
+
+int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+                           const unsigned char **pk, int *ppklen,
+                           X509_ALGOR **pa, X509_PUBKEY *pub)
+{
+    if (ppkalg)
+        *ppkalg = pub->algor->algorithm;
+    if (pk) {
+        *pk = pub->public_key->data;
+        *ppklen = pub->public_key->length;
+    }
+    if (pa)
+        *pa = pub->algor;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c.grpc_back
new file mode 100644
index 0000000..3d07d66
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_pubkey.c.grpc_back	
@@ -0,0 +1,368 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <limits.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+/* Minor tweak to operation: free up EVP_PKEY */
+static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                     void *exarg)
+{
+    if (operation == ASN1_OP_FREE_POST) {
+        X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
+        EVP_PKEY_free(pubkey->pkey);
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
+        ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
+        ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
+
+int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
+{
+    X509_PUBKEY *pk = NULL;
+    uint8_t *spki = NULL;
+    size_t spki_len;
+
+    if (x == NULL)
+        return (0);
+
+    CBB cbb;
+    if (!CBB_init(&cbb, 0) ||
+        !EVP_marshal_public_key(&cbb, pkey) ||
+        !CBB_finish(&cbb, &spki, &spki_len) ||
+        spki_len > LONG_MAX) {
+        CBB_cleanup(&cbb);
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_ENCODE_ERROR);
+        goto error;
+    }
+
+    const uint8_t *p = spki;
+    pk = d2i_X509_PUBKEY(NULL, &p, (long)spki_len);
+    if (pk == NULL || p != spki + spki_len) {
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+        goto error;
+    }
+
+    OPENSSL_free(spki);
+    X509_PUBKEY_free(*x);
+    *x = pk;
+
+    return 1;
+ error:
+    X509_PUBKEY_free(pk);
+    OPENSSL_free(spki);
+    return 0;
+}
+
+/* g_pubkey_lock is used to protect the initialisation of the |pkey| member of
+ * |X509_PUBKEY| objects. Really |X509_PUBKEY| should have a |CRYPTO_once_t|
+ * inside it for this, but |CRYPTO_once_t| is private and |X509_PUBKEY| is
+ * not. */
+static struct CRYPTO_STATIC_MUTEX g_pubkey_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
+{
+    EVP_PKEY *ret = NULL;
+    uint8_t *spki = NULL;
+
+    if (key == NULL)
+        goto error;
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_pubkey_lock);
+    if (key->pkey != NULL) {
+        CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+        EVP_PKEY_up_ref(key->pkey);
+        return key->pkey;
+    }
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+
+    /* Re-encode the |X509_PUBKEY| to DER and parse it. */
+    int spki_len = i2d_X509_PUBKEY(key, &spki);
+    if (spki_len < 0) {
+        goto error;
+    }
+    CBS cbs;
+    CBS_init(&cbs, spki, (size_t)spki_len);
+    ret = EVP_parse_public_key(&cbs);
+    if (ret == NULL || CBS_len(&cbs) != 0) {
+        OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+        goto error;
+    }
+
+    /* Check to see if another thread set key->pkey first */
+    CRYPTO_STATIC_MUTEX_lock_write(&g_pubkey_lock);
+    if (key->pkey) {
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+        EVP_PKEY_free(ret);
+        ret = key->pkey;
+    } else {
+        key->pkey = ret;
+        CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+    }
+
+    OPENSSL_free(spki);
+    EVP_PKEY_up_ref(ret);
+    return ret;
+
+ error:
+    OPENSSL_free(spki);
+    EVP_PKEY_free(ret);
+    return NULL;
+}
+
+/*
+ * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
+ * decode as X509_PUBKEY
+ */
+
+EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length)
+{
+    X509_PUBKEY *xpk;
+    EVP_PKEY *pktmp;
+    xpk = d2i_X509_PUBKEY(NULL, pp, length);
+    if (!xpk)
+        return NULL;
+    pktmp = X509_PUBKEY_get(xpk);
+    X509_PUBKEY_free(xpk);
+    if (!pktmp)
+        return NULL;
+    if (a) {
+        EVP_PKEY_free(*a);
+        *a = pktmp;
+    }
+    return pktmp;
+}
+
+int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp)
+{
+    X509_PUBKEY *xpk = NULL;
+    int ret;
+    if (!a)
+        return 0;
+    if (!X509_PUBKEY_set(&xpk, (EVP_PKEY *)a))
+        return 0;
+    ret = i2d_X509_PUBKEY(xpk, pp);
+    X509_PUBKEY_free(xpk);
+    return ret;
+}
+
+/*
+ * The following are equivalents but which return RSA and DSA keys
+ */
+RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    RSA *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return NULL;
+    key = EVP_PKEY_get1_RSA(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return NULL;
+    *pp = q;
+    if (a) {
+        RSA_free(*a);
+        *a = key;
+    }
+    return key;
+}
+
+int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (!pktmp) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_RSA(pktmp, (RSA *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+
+#ifndef OPENSSL_NO_DSA
+DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    DSA *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return NULL;
+    key = EVP_PKEY_get1_DSA(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return NULL;
+    *pp = q;
+    if (a) {
+        DSA_free(*a);
+        *a = key;
+    }
+    return key;
+}
+
+int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (!pktmp) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_DSA(pktmp, (DSA *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+#endif
+
+EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
+{
+    EVP_PKEY *pkey;
+    EC_KEY *key;
+    const unsigned char *q;
+    q = *pp;
+    pkey = d2i_PUBKEY(NULL, &q, length);
+    if (!pkey)
+        return (NULL);
+    key = EVP_PKEY_get1_EC_KEY(pkey);
+    EVP_PKEY_free(pkey);
+    if (!key)
+        return (NULL);
+    *pp = q;
+    if (a) {
+        EC_KEY_free(*a);
+        *a = key;
+    }
+    return (key);
+}
+
+int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return (0);
+    if ((pktmp = EVP_PKEY_new()) == NULL) {
+        OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    EVP_PKEY_set1_EC_KEY(pktmp, (EC_KEY *)a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return (ret);
+}
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+                           int ptype, void *pval,
+                           unsigned char *penc, int penclen)
+{
+    if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
+        return 0;
+    if (penc) {
+        if (pub->public_key->data)
+            OPENSSL_free(pub->public_key->data);
+        pub->public_key->data = penc;
+        pub->public_key->length = penclen;
+        /* Set number of unused bits to zero */
+        pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+        pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+    }
+    return 1;
+}
+
+int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+                           const unsigned char **pk, int *ppklen,
+                           X509_ALGOR **pa, X509_PUBKEY *pub)
+{
+    if (ppkalg)
+        *ppkalg = pub->algor->algorithm;
+    if (pk) {
+        *pk = pub->public_key->data;
+        *ppklen = pub->public_key->length;
+    }
+    if (pa)
+        *pa = pub->algor;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c
new file mode 100644
index 0000000..a19775a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c	
@@ -0,0 +1,109 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+
+/*
+ * X509_REQ_INFO is handled in an unusual way to get round invalid encodings.
+ * Some broken certificate requests don't encode the attributes field if it
+ * is empty. This is in violation of PKCS#10 but we need to tolerate it. We
+ * do this by making the attributes field OPTIONAL then using the callback to
+ * initialise it to an empty STACK. This means that the field will be
+ * correctly encoded unless we NULL out the field. As a result we no longer
+ * need the req_kludge field because the information is now contained in the
+ * attributes field: 1. If it is NULL then it's the invalid omission. 2. If
+ * it is empty it is the correct encoding. 3. If it is not empty then some
+ * attributes are present.
+ */
+
+static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
+
+    if (operation == ASN1_OP_NEW_POST) {
+        rinf->attributes = sk_X509_ATTRIBUTE_new_null();
+        if (!rinf->attributes)
+            return 0;
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
+        ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
+        ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
+        /* This isn't really OPTIONAL but it gets round invalid
+         * encodings
+         */
+        ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
+} ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
+
+ASN1_SEQUENCE_ref(X509_REQ, 0) = {
+        ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO),
+        ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c.grpc_back
new file mode 100644
index 0000000..5dfe19e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_req.c.grpc_back	
@@ -0,0 +1,109 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+
+/*
+ * X509_REQ_INFO is handled in an unusual way to get round invalid encodings.
+ * Some broken certificate requests don't encode the attributes field if it
+ * is empty. This is in violation of PKCS#10 but we need to tolerate it. We
+ * do this by making the attributes field OPTIONAL then using the callback to
+ * initialise it to an empty STACK. This means that the field will be
+ * correctly encoded unless we NULL out the field. As a result we no longer
+ * need the req_kludge field because the information is now contained in the
+ * attributes field: 1. If it is NULL then it's the invalid omission. 2. If
+ * it is empty it is the correct encoding. 3. If it is not empty then some
+ * attributes are present.
+ */
+
+static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
+
+    if (operation == ASN1_OP_NEW_POST) {
+        rinf->attributes = sk_X509_ATTRIBUTE_new_null();
+        if (!rinf->attributes)
+            return 0;
+    }
+    return 1;
+}
+
+ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = {
+        ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME),
+        ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY),
+        /* This isn't really OPTIONAL but it gets round invalid
+         * encodings
+         */
+        ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0)
+} ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO)
+
+ASN1_SEQUENCE_ref(X509_REQ, 0) = {
+        ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO),
+        ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_REQ)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c
new file mode 100644
index 0000000..b3c5ea5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c	
@@ -0,0 +1,69 @@
+/* crypto/asn1/x_sig.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/x509.h>
+
+
+ASN1_SEQUENCE(X509_SIG) = {
+        ASN1_SIMPLE(X509_SIG, algor, X509_ALGOR),
+        ASN1_SIMPLE(X509_SIG, digest, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(X509_SIG)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_SIG)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c.grpc_back
new file mode 100644
index 0000000..e18024a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_sig.c.grpc_back	
@@ -0,0 +1,69 @@
+/* crypto/asn1/x_sig.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+
+
+ASN1_SEQUENCE(X509_SIG) = {
+        ASN1_SIMPLE(X509_SIG, algor, X509_ALGOR),
+        ASN1_SIMPLE(X509_SIG, digest, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(X509_SIG)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_SIG)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c
new file mode 100644
index 0000000..2b05a41
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c	
@@ -0,0 +1,80 @@
+/* crypto/asn1/x_spki.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+ /*
+  * This module was send to me my Pat Richards <patr@x509.com> who wrote it.
+  * It is under my Copyright with his permission.
+  */
+
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/asn1t.h>
+
+
+ASN1_SEQUENCE(NETSCAPE_SPKAC) = {
+        ASN1_SIMPLE(NETSCAPE_SPKAC, pubkey, X509_PUBKEY),
+        ASN1_SIMPLE(NETSCAPE_SPKAC, challenge, ASN1_IA5STRING)
+} ASN1_SEQUENCE_END(NETSCAPE_SPKAC)
+
+IMPLEMENT_ASN1_FUNCTIONS(NETSCAPE_SPKAC)
+
+ASN1_SEQUENCE(NETSCAPE_SPKI) = {
+        ASN1_SIMPLE(NETSCAPE_SPKI, spkac, NETSCAPE_SPKAC),
+        ASN1_SIMPLE(NETSCAPE_SPKI, sig_algor, X509_ALGOR),
+        ASN1_SIMPLE(NETSCAPE_SPKI, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END(NETSCAPE_SPKI)
+
+IMPLEMENT_ASN1_FUNCTIONS(NETSCAPE_SPKI)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c.grpc_back
new file mode 100644
index 0000000..86da6dd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_spki.c.grpc_back	
@@ -0,0 +1,80 @@
+/* crypto/asn1/x_spki.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+ /*
+  * This module was send to me my Pat Richards <patr@x509.com> who wrote it.
+  * It is under my Copyright with his permission.
+  */
+
+#include <openssl/x509.h>
+#include <openssl/asn1t.h>
+
+
+ASN1_SEQUENCE(NETSCAPE_SPKAC) = {
+        ASN1_SIMPLE(NETSCAPE_SPKAC, pubkey, X509_PUBKEY),
+        ASN1_SIMPLE(NETSCAPE_SPKAC, challenge, ASN1_IA5STRING)
+} ASN1_SEQUENCE_END(NETSCAPE_SPKAC)
+
+IMPLEMENT_ASN1_FUNCTIONS(NETSCAPE_SPKAC)
+
+ASN1_SEQUENCE(NETSCAPE_SPKI) = {
+        ASN1_SIMPLE(NETSCAPE_SPKI, spkac, NETSCAPE_SPKAC),
+        ASN1_SIMPLE(NETSCAPE_SPKI, sig_algor, X509_ALGOR),
+        ASN1_SIMPLE(NETSCAPE_SPKI, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END(NETSCAPE_SPKI)
+
+IMPLEMENT_ASN1_FUNCTIONS(NETSCAPE_SPKI)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c
new file mode 100644
index 0000000..797f71d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c	
@@ -0,0 +1,69 @@
+/* crypto/asn1/x_val.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/x509.h>
+
+
+ASN1_SEQUENCE(X509_VAL) = {
+        ASN1_SIMPLE(X509_VAL, notBefore, ASN1_TIME),
+        ASN1_SIMPLE(X509_VAL, notAfter, ASN1_TIME)
+} ASN1_SEQUENCE_END(X509_VAL)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_VAL)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c.grpc_back
new file mode 100644
index 0000000..ad4f7e1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_val.c.grpc_back	
@@ -0,0 +1,69 @@
+/* crypto/asn1/x_val.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+
+
+ASN1_SEQUENCE(X509_VAL) = {
+        ASN1_SIMPLE(X509_VAL, notBefore, ASN1_TIME),
+        ASN1_SIMPLE(X509_VAL, notAfter, ASN1_TIME)
+} ASN1_SEQUENCE_END(X509_VAL)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_VAL)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c
new file mode 100644
index 0000000..7b42b94
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c	
@@ -0,0 +1,334 @@
+/* crypto/asn1/x_x509.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pool.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
+        ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
+        ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
+        ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
+        ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
+        ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
+        ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
+        ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
+} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
+/* X509 top level structure needs a bit of customisation */
+
+extern void policy_cache_free(X509_POLICY_CACHE *cache);
+
+static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509 *ret = (X509 *)*pval;
+
+    switch (operation) {
+
+    case ASN1_OP_NEW_POST:
+        ret->name = NULL;
+        ret->ex_flags = 0;
+        ret->ex_pathlen = -1;
+        ret->skid = NULL;
+        ret->akid = NULL;
+        ret->aux = NULL;
+        ret->crldp = NULL;
+        ret->buf = NULL;
+        CRYPTO_new_ex_data(&ret->ex_data);
+        CRYPTO_MUTEX_init(&ret->lock);
+        break;
+
+    case ASN1_OP_D2I_PRE:
+        CRYPTO_BUFFER_free(ret->buf);
+        ret->buf = NULL;
+        break;
+
+    case ASN1_OP_D2I_POST:
+        if (ret->name != NULL)
+            OPENSSL_free(ret->name);
+        ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
+        break;
+
+    case ASN1_OP_FREE_POST:
+        CRYPTO_MUTEX_cleanup(&ret->lock);
+        CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
+        X509_CERT_AUX_free(ret->aux);
+        ASN1_OCTET_STRING_free(ret->skid);
+        AUTHORITY_KEYID_free(ret->akid);
+        CRL_DIST_POINTS_free(ret->crldp);
+        policy_cache_free(ret->policy_cache);
+        GENERAL_NAMES_free(ret->altname);
+        NAME_CONSTRAINTS_free(ret->nc);
+        CRYPTO_BUFFER_free(ret->buf);
+        OPENSSL_free(ret->name);
+        break;
+
+    }
+
+    return 1;
+
+}
+
+ASN1_SEQUENCE_ref(X509, x509_cb) = {
+        ASN1_SIMPLE(X509, cert_info, X509_CINF),
+        ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509, X509)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509)
+
+X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf) {
+  if (CRYPTO_BUFFER_len(buf) > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  X509 *x509 = X509_new();
+  if (x509 == NULL) {
+    return NULL;
+  }
+
+  x509->cert_info->enc.alias_only_on_next_parse = 1;
+
+  const uint8_t *inp = CRYPTO_BUFFER_data(buf);
+  X509 *x509p = x509;
+  X509 *ret = d2i_X509(&x509p, &inp, CRYPTO_BUFFER_len(buf));
+  if (ret == NULL ||
+      inp - CRYPTO_BUFFER_data(buf) != (ptrdiff_t)CRYPTO_BUFFER_len(buf)) {
+    X509_free(x509p);
+    return NULL;
+  }
+  assert(x509p == x509);
+  assert(ret == x509);
+
+  CRYPTO_BUFFER_up_ref(buf);
+  ret->buf = buf;
+
+  return ret;
+}
+
+int X509_up_ref(X509 *x)
+{
+    CRYPTO_refcount_inc(&x->references);
+    return 1;
+}
+
+int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused * unused,
+                          CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func)
+{
+    int index;
+    if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                                 free_func)) {
+        return -1;
+    }
+    return index;
+}
+
+int X509_set_ex_data(X509 *r, int idx, void *arg)
+{
+    return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+}
+
+void *X509_get_ex_data(X509 *r, int idx)
+{
+    return (CRYPTO_get_ex_data(&r->ex_data, idx));
+}
+
+/*
+ * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
+ * extra info tagged on the end. Since these functions set how a certificate
+ * is trusted they should only be used when the certificate comes from a
+ * reliable source such as local storage.
+ */
+
+X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
+{
+    const unsigned char *q = *pp;
+    X509 *ret;
+    int freeret = 0;
+
+    if (!a || *a == NULL)
+        freeret = 1;
+    ret = d2i_X509(a, &q, length);
+    /* If certificate unreadable then forget it */
+    if (!ret)
+        return NULL;
+    /* update length */
+    length -= q - *pp;
+    /* Parse auxiliary information if there is any. */
+    if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
+        goto err;
+    *pp = q;
+    return ret;
+ err:
+    if (freeret) {
+        X509_free(ret);
+        if (a)
+            *a = NULL;
+    }
+    return NULL;
+}
+
+/*
+ * Serialize trusted certificate to *pp or just return the required buffer
+ * length if pp == NULL.  We ultimately want to avoid modifying *pp in the
+ * error path, but that depends on similar hygiene in lower-level functions.
+ * Here we avoid compounding the problem.
+ */
+static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
+{
+    int length, tmplen;
+    unsigned char *start = pp != NULL ? *pp : NULL;
+
+    assert(pp == NULL || *pp != NULL);
+
+    /*
+     * This might perturb *pp on error, but fixing that belongs in i2d_X509()
+     * not here.  It should be that if a == NULL length is zero, but we check
+     * both just in case.
+     */
+    length = i2d_X509(a, pp);
+    if (length <= 0 || a == NULL) {
+        return length;
+    }
+
+    tmplen = i2d_X509_CERT_AUX(a->aux, pp);
+    if (tmplen < 0) {
+        if (start != NULL)
+            *pp = start;
+        return tmplen;
+    }
+    length += tmplen;
+
+    return length;
+}
+
+/*
+ * Serialize trusted certificate to *pp, or just return the required buffer
+ * length if pp == NULL.
+ *
+ * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
+ * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
+ * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
+ * allocated buffer.
+ */
+int i2d_X509_AUX(X509 *a, unsigned char **pp)
+{
+    int length;
+    unsigned char *tmp;
+
+    /* Buffer provided by caller */
+    if (pp == NULL || *pp != NULL)
+        return i2d_x509_aux_internal(a, pp);
+
+    /* Obtain the combined length */
+    if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
+        return length;
+
+    /* Allocate requisite combined storage */
+    *pp = tmp = OPENSSL_malloc(length);
+    if (tmp == NULL)
+        return -1; /* Push error onto error stack? */
+
+    /* Encode, but keep *pp at the originally malloced pointer */
+    length = i2d_x509_aux_internal(a, &tmp);
+    if (length <= 0) {
+        OPENSSL_free(*pp);
+        *pp = NULL;
+    }
+    return length;
+}
+
+int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
+{
+    x->cert_info->enc.modified = 1;
+    return i2d_X509_CINF(x->cert_info, pp);
+}
+
+void X509_get0_signature(const ASN1_BIT_STRING **psig, const X509_ALGOR **palg,
+                         const X509 *x)
+{
+    if (psig)
+        *psig = x->signature;
+    if (palg)
+        *palg = x->sig_alg;
+}
+
+int X509_get_signature_nid(const X509 *x)
+{
+    return OBJ_obj2nid(x->sig_alg->algorithm);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c.grpc_back
new file mode 100644
index 0000000..9ece062
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509.c.grpc_back	
@@ -0,0 +1,334 @@
+/* crypto/asn1/x_x509.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pool.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
+        ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
+        ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
+        ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
+        ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
+        ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
+        ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
+        ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
+        ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
+        ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
+} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
+/* X509 top level structure needs a bit of customisation */
+
+extern void policy_cache_free(X509_POLICY_CACHE *cache);
+
+static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                   void *exarg)
+{
+    X509 *ret = (X509 *)*pval;
+
+    switch (operation) {
+
+    case ASN1_OP_NEW_POST:
+        ret->name = NULL;
+        ret->ex_flags = 0;
+        ret->ex_pathlen = -1;
+        ret->skid = NULL;
+        ret->akid = NULL;
+        ret->aux = NULL;
+        ret->crldp = NULL;
+        ret->buf = NULL;
+        CRYPTO_new_ex_data(&ret->ex_data);
+        CRYPTO_MUTEX_init(&ret->lock);
+        break;
+
+    case ASN1_OP_D2I_PRE:
+        CRYPTO_BUFFER_free(ret->buf);
+        ret->buf = NULL;
+        break;
+
+    case ASN1_OP_D2I_POST:
+        if (ret->name != NULL)
+            OPENSSL_free(ret->name);
+        ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
+        break;
+
+    case ASN1_OP_FREE_POST:
+        CRYPTO_MUTEX_cleanup(&ret->lock);
+        CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
+        X509_CERT_AUX_free(ret->aux);
+        ASN1_OCTET_STRING_free(ret->skid);
+        AUTHORITY_KEYID_free(ret->akid);
+        CRL_DIST_POINTS_free(ret->crldp);
+        policy_cache_free(ret->policy_cache);
+        GENERAL_NAMES_free(ret->altname);
+        NAME_CONSTRAINTS_free(ret->nc);
+        CRYPTO_BUFFER_free(ret->buf);
+        OPENSSL_free(ret->name);
+        break;
+
+    }
+
+    return 1;
+
+}
+
+ASN1_SEQUENCE_ref(X509, x509_cb) = {
+        ASN1_SIMPLE(X509, cert_info, X509_CINF),
+        ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
+        ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509, X509)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509)
+
+X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf) {
+  if (CRYPTO_BUFFER_len(buf) > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  X509 *x509 = X509_new();
+  if (x509 == NULL) {
+    return NULL;
+  }
+
+  x509->cert_info->enc.alias_only_on_next_parse = 1;
+
+  const uint8_t *inp = CRYPTO_BUFFER_data(buf);
+  X509 *x509p = x509;
+  X509 *ret = d2i_X509(&x509p, &inp, CRYPTO_BUFFER_len(buf));
+  if (ret == NULL ||
+      inp - CRYPTO_BUFFER_data(buf) != (ptrdiff_t)CRYPTO_BUFFER_len(buf)) {
+    X509_free(x509p);
+    return NULL;
+  }
+  assert(x509p == x509);
+  assert(ret == x509);
+
+  CRYPTO_BUFFER_up_ref(buf);
+  ret->buf = buf;
+
+  return ret;
+}
+
+int X509_up_ref(X509 *x)
+{
+    CRYPTO_refcount_inc(&x->references);
+    return 1;
+}
+
+int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused * unused,
+                          CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func)
+{
+    int index;
+    if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                                 free_func)) {
+        return -1;
+    }
+    return index;
+}
+
+int X509_set_ex_data(X509 *r, int idx, void *arg)
+{
+    return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+}
+
+void *X509_get_ex_data(X509 *r, int idx)
+{
+    return (CRYPTO_get_ex_data(&r->ex_data, idx));
+}
+
+/*
+ * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
+ * extra info tagged on the end. Since these functions set how a certificate
+ * is trusted they should only be used when the certificate comes from a
+ * reliable source such as local storage.
+ */
+
+X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
+{
+    const unsigned char *q = *pp;
+    X509 *ret;
+    int freeret = 0;
+
+    if (!a || *a == NULL)
+        freeret = 1;
+    ret = d2i_X509(a, &q, length);
+    /* If certificate unreadable then forget it */
+    if (!ret)
+        return NULL;
+    /* update length */
+    length -= q - *pp;
+    /* Parse auxiliary information if there is any. */
+    if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
+        goto err;
+    *pp = q;
+    return ret;
+ err:
+    if (freeret) {
+        X509_free(ret);
+        if (a)
+            *a = NULL;
+    }
+    return NULL;
+}
+
+/*
+ * Serialize trusted certificate to *pp or just return the required buffer
+ * length if pp == NULL.  We ultimately want to avoid modifying *pp in the
+ * error path, but that depends on similar hygiene in lower-level functions.
+ * Here we avoid compounding the problem.
+ */
+static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
+{
+    int length, tmplen;
+    unsigned char *start = pp != NULL ? *pp : NULL;
+
+    assert(pp == NULL || *pp != NULL);
+
+    /*
+     * This might perturb *pp on error, but fixing that belongs in i2d_X509()
+     * not here.  It should be that if a == NULL length is zero, but we check
+     * both just in case.
+     */
+    length = i2d_X509(a, pp);
+    if (length <= 0 || a == NULL) {
+        return length;
+    }
+
+    tmplen = i2d_X509_CERT_AUX(a->aux, pp);
+    if (tmplen < 0) {
+        if (start != NULL)
+            *pp = start;
+        return tmplen;
+    }
+    length += tmplen;
+
+    return length;
+}
+
+/*
+ * Serialize trusted certificate to *pp, or just return the required buffer
+ * length if pp == NULL.
+ *
+ * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
+ * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
+ * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
+ * allocated buffer.
+ */
+int i2d_X509_AUX(X509 *a, unsigned char **pp)
+{
+    int length;
+    unsigned char *tmp;
+
+    /* Buffer provided by caller */
+    if (pp == NULL || *pp != NULL)
+        return i2d_x509_aux_internal(a, pp);
+
+    /* Obtain the combined length */
+    if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
+        return length;
+
+    /* Allocate requisite combined storage */
+    *pp = tmp = OPENSSL_malloc(length);
+    if (tmp == NULL)
+        return -1; /* Push error onto error stack? */
+
+    /* Encode, but keep *pp at the originally malloced pointer */
+    length = i2d_x509_aux_internal(a, &tmp);
+    if (length <= 0) {
+        OPENSSL_free(*pp);
+        *pp = NULL;
+    }
+    return length;
+}
+
+int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
+{
+    x->cert_info->enc.modified = 1;
+    return i2d_X509_CINF(x->cert_info, pp);
+}
+
+void X509_get0_signature(const ASN1_BIT_STRING **psig, const X509_ALGOR **palg,
+                         const X509 *x)
+{
+    if (psig)
+        *psig = x->signature;
+    if (palg)
+        *palg = x->sig_alg;
+}
+
+int X509_get_signature_nid(const X509 *x)
+{
+    return OBJ_obj2nid(x->sig_alg->algorithm);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c
new file mode 100644
index 0000000..e2ed356
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c	
@@ -0,0 +1,198 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+
+/*
+ * X509_CERT_AUX routines. These are used to encode additional user
+ * modifiable data about a certificate. This data is appended to the X509
+ * encoding when the *_X509_AUX routines are used. This means that the
+ * "traditional" X509 routines will simply ignore the extra data.
+ */
+
+static X509_CERT_AUX *aux_get(X509 *x);
+
+ASN1_SEQUENCE(X509_CERT_AUX) = {
+        ASN1_SEQUENCE_OF_OPT(X509_CERT_AUX, trust, ASN1_OBJECT),
+        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, reject, ASN1_OBJECT, 0),
+        ASN1_OPT(X509_CERT_AUX, alias, ASN1_UTF8STRING),
+        ASN1_OPT(X509_CERT_AUX, keyid, ASN1_OCTET_STRING),
+        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, other, X509_ALGOR, 1)
+} ASN1_SEQUENCE_END(X509_CERT_AUX)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_AUX)
+
+static X509_CERT_AUX *aux_get(X509 *x)
+{
+    if (!x)
+        return NULL;
+    if (!x->aux && !(x->aux = X509_CERT_AUX_new()))
+        return NULL;
+    return x->aux;
+}
+
+int X509_alias_set1(X509 *x, unsigned char *name, int len)
+{
+    X509_CERT_AUX *aux;
+    if (!name) {
+        if (!x || !x->aux || !x->aux->alias)
+            return 1;
+        ASN1_UTF8STRING_free(x->aux->alias);
+        x->aux->alias = NULL;
+        return 1;
+    }
+    if (!(aux = aux_get(x)))
+        return 0;
+    if (!aux->alias && !(aux->alias = ASN1_UTF8STRING_new()))
+        return 0;
+    return ASN1_STRING_set(aux->alias, name, len);
+}
+
+int X509_keyid_set1(X509 *x, unsigned char *id, int len)
+{
+    X509_CERT_AUX *aux;
+    if (!id) {
+        if (!x || !x->aux || !x->aux->keyid)
+            return 1;
+        ASN1_OCTET_STRING_free(x->aux->keyid);
+        x->aux->keyid = NULL;
+        return 1;
+    }
+    if (!(aux = aux_get(x)))
+        return 0;
+    if (!aux->keyid && !(aux->keyid = ASN1_OCTET_STRING_new()))
+        return 0;
+    return ASN1_STRING_set(aux->keyid, id, len);
+}
+
+unsigned char *X509_alias_get0(X509 *x, int *len)
+{
+    if (!x->aux || !x->aux->alias)
+        return NULL;
+    if (len)
+        *len = x->aux->alias->length;
+    return x->aux->alias->data;
+}
+
+unsigned char *X509_keyid_get0(X509 *x, int *len)
+{
+    if (!x->aux || !x->aux->keyid)
+        return NULL;
+    if (len)
+        *len = x->aux->keyid->length;
+    return x->aux->keyid->data;
+}
+
+int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj)
+{
+    ASN1_OBJECT *objtmp = OBJ_dup(obj);
+    if (objtmp == NULL)
+        goto err;
+    X509_CERT_AUX *aux = aux_get(x);
+    if (aux->trust == NULL) {
+        aux->trust = sk_ASN1_OBJECT_new_null();
+        if (aux->trust == NULL)
+            goto err;
+    }
+    if (!sk_ASN1_OBJECT_push(aux->trust, objtmp))
+        goto err;
+    return 1;
+
+ err:
+    ASN1_OBJECT_free(objtmp);
+    return 0;
+}
+
+int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj)
+{
+    ASN1_OBJECT *objtmp = OBJ_dup(obj);
+    if (objtmp == NULL)
+        goto err;
+    X509_CERT_AUX *aux = aux_get(x);
+    if (aux->reject == NULL) {
+        aux->reject = sk_ASN1_OBJECT_new_null();
+        if (aux->reject == NULL)
+            goto err;
+    }
+    if (!sk_ASN1_OBJECT_push(aux->reject, objtmp))
+        goto err;
+    return 1;
+
+ err:
+    ASN1_OBJECT_free(objtmp);
+    return 0;
+}
+
+void X509_trust_clear(X509 *x)
+{
+    if (x->aux && x->aux->trust) {
+        sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free);
+        x->aux->trust = NULL;
+    }
+}
+
+void X509_reject_clear(X509 *x)
+{
+    if (x->aux && x->aux->reject) {
+        sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free);
+        x->aux->reject = NULL;
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c.grpc_back
new file mode 100644
index 0000000..dccc46a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509/x_x509a.c.grpc_back	
@@ -0,0 +1,198 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+/*
+ * X509_CERT_AUX routines. These are used to encode additional user
+ * modifiable data about a certificate. This data is appended to the X509
+ * encoding when the *_X509_AUX routines are used. This means that the
+ * "traditional" X509 routines will simply ignore the extra data.
+ */
+
+static X509_CERT_AUX *aux_get(X509 *x);
+
+ASN1_SEQUENCE(X509_CERT_AUX) = {
+        ASN1_SEQUENCE_OF_OPT(X509_CERT_AUX, trust, ASN1_OBJECT),
+        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, reject, ASN1_OBJECT, 0),
+        ASN1_OPT(X509_CERT_AUX, alias, ASN1_UTF8STRING),
+        ASN1_OPT(X509_CERT_AUX, keyid, ASN1_OCTET_STRING),
+        ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, other, X509_ALGOR, 1)
+} ASN1_SEQUENCE_END(X509_CERT_AUX)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_AUX)
+
+static X509_CERT_AUX *aux_get(X509 *x)
+{
+    if (!x)
+        return NULL;
+    if (!x->aux && !(x->aux = X509_CERT_AUX_new()))
+        return NULL;
+    return x->aux;
+}
+
+int X509_alias_set1(X509 *x, unsigned char *name, int len)
+{
+    X509_CERT_AUX *aux;
+    if (!name) {
+        if (!x || !x->aux || !x->aux->alias)
+            return 1;
+        ASN1_UTF8STRING_free(x->aux->alias);
+        x->aux->alias = NULL;
+        return 1;
+    }
+    if (!(aux = aux_get(x)))
+        return 0;
+    if (!aux->alias && !(aux->alias = ASN1_UTF8STRING_new()))
+        return 0;
+    return ASN1_STRING_set(aux->alias, name, len);
+}
+
+int X509_keyid_set1(X509 *x, unsigned char *id, int len)
+{
+    X509_CERT_AUX *aux;
+    if (!id) {
+        if (!x || !x->aux || !x->aux->keyid)
+            return 1;
+        ASN1_OCTET_STRING_free(x->aux->keyid);
+        x->aux->keyid = NULL;
+        return 1;
+    }
+    if (!(aux = aux_get(x)))
+        return 0;
+    if (!aux->keyid && !(aux->keyid = ASN1_OCTET_STRING_new()))
+        return 0;
+    return ASN1_STRING_set(aux->keyid, id, len);
+}
+
+unsigned char *X509_alias_get0(X509 *x, int *len)
+{
+    if (!x->aux || !x->aux->alias)
+        return NULL;
+    if (len)
+        *len = x->aux->alias->length;
+    return x->aux->alias->data;
+}
+
+unsigned char *X509_keyid_get0(X509 *x, int *len)
+{
+    if (!x->aux || !x->aux->keyid)
+        return NULL;
+    if (len)
+        *len = x->aux->keyid->length;
+    return x->aux->keyid->data;
+}
+
+int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj)
+{
+    ASN1_OBJECT *objtmp = OBJ_dup(obj);
+    if (objtmp == NULL)
+        goto err;
+    X509_CERT_AUX *aux = aux_get(x);
+    if (aux->trust == NULL) {
+        aux->trust = sk_ASN1_OBJECT_new_null();
+        if (aux->trust == NULL)
+            goto err;
+    }
+    if (!sk_ASN1_OBJECT_push(aux->trust, objtmp))
+        goto err;
+    return 1;
+
+ err:
+    ASN1_OBJECT_free(objtmp);
+    return 0;
+}
+
+int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj)
+{
+    ASN1_OBJECT *objtmp = OBJ_dup(obj);
+    if (objtmp == NULL)
+        goto err;
+    X509_CERT_AUX *aux = aux_get(x);
+    if (aux->reject == NULL) {
+        aux->reject = sk_ASN1_OBJECT_new_null();
+        if (aux->reject == NULL)
+            goto err;
+    }
+    if (!sk_ASN1_OBJECT_push(aux->reject, objtmp))
+        goto err;
+    return 1;
+
+ err:
+    ASN1_OBJECT_free(objtmp);
+    return 0;
+}
+
+void X509_trust_clear(X509 *x)
+{
+    if (x->aux && x->aux->trust) {
+        sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free);
+        x->aux->trust = NULL;
+    }
+}
+
+void X509_reject_clear(X509 *x)
+{
+    if (x->aux && x->aux->reject) {
+        sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free);
+        x->aux->reject = NULL;
+    }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h
new file mode 100644
index 0000000..a6ca45b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h	
@@ -0,0 +1,141 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* This file contains a table of "standard" extensions */
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+extern const X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku;
+extern const X509V3_EXT_METHOD v3_pkey_usage_period, v3_sxnet, v3_info,
+    v3_sinfo;
+extern const X509V3_EXT_METHOD v3_ns_ia5_list[], v3_alt[], v3_skey_id,
+    v3_akey_id;
+extern const X509V3_EXT_METHOD v3_crl_num, v3_crl_reason, v3_crl_invdate;
+extern const X509V3_EXT_METHOD v3_delta_crl, v3_cpols, v3_crld,
+    v3_freshest_crl;
+extern const X509V3_EXT_METHOD v3_ocsp_nonce, v3_ocsp_accresp,
+    v3_ocsp_acutoff;
+extern const X509V3_EXT_METHOD v3_ocsp_crlid, v3_ocsp_nocheck,
+    v3_ocsp_serviceloc;
+extern const X509V3_EXT_METHOD v3_crl_hold, v3_pci;
+extern const X509V3_EXT_METHOD v3_policy_mappings, v3_policy_constraints;
+extern const X509V3_EXT_METHOD v3_name_constraints, v3_inhibit_anyp, v3_idp;
+extern const X509V3_EXT_METHOD v3_addr, v3_asid;
+
+/*
+ * This table will be searched using OBJ_bsearch so it *must* kept in order
+ * of the ext_nid values.
+ */
+
+/* TODO(fork): OCSP support */
+#define OPENSSL_NO_OCSP
+
+static const X509V3_EXT_METHOD *const standard_exts[] = {
+    &v3_nscert,
+    &v3_ns_ia5_list[0],
+    &v3_ns_ia5_list[1],
+    &v3_ns_ia5_list[2],
+    &v3_ns_ia5_list[3],
+    &v3_ns_ia5_list[4],
+    &v3_ns_ia5_list[5],
+    &v3_ns_ia5_list[6],
+    &v3_skey_id,
+    &v3_key_usage,
+    &v3_pkey_usage_period,
+    &v3_alt[0],
+    &v3_alt[1],
+    &v3_bcons,
+    &v3_crl_num,
+    &v3_cpols,
+    &v3_akey_id,
+    &v3_crld,
+    &v3_ext_ku,
+    &v3_delta_crl,
+    &v3_crl_reason,
+    &v3_crl_invdate,
+    &v3_sxnet,
+    &v3_info,
+#ifndef OPENSSL_NO_OCSP
+    &v3_ocsp_nonce,
+    &v3_ocsp_crlid,
+    &v3_ocsp_accresp,
+    &v3_ocsp_acutoff,
+    &v3_ocsp_serviceloc,
+#endif
+    &v3_ocsp_nocheck,
+    &v3_sinfo,
+    &v3_policy_constraints,
+#ifndef OPENSSL_NO_OCSP
+    &v3_crl_hold,
+#endif
+    &v3_pci,
+    &v3_name_constraints,
+    &v3_policy_mappings,
+    &v3_inhibit_anyp,
+    &v3_idp,
+    &v3_alt[2],
+    &v3_freshest_crl,
+};
+
+/* Number of standard extensions */
+
+#define STANDARD_EXTENSION_COUNT (sizeof(standard_exts)/sizeof(X509V3_EXT_METHOD *))
+
+#if defined(__cplusplus)
+} /* extern C */
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h.grpc_back
new file mode 100644
index 0000000..a6ca45b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/ext_dat.h.grpc_back	
@@ -0,0 +1,141 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* This file contains a table of "standard" extensions */
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+extern const X509V3_EXT_METHOD v3_bcons, v3_nscert, v3_key_usage, v3_ext_ku;
+extern const X509V3_EXT_METHOD v3_pkey_usage_period, v3_sxnet, v3_info,
+    v3_sinfo;
+extern const X509V3_EXT_METHOD v3_ns_ia5_list[], v3_alt[], v3_skey_id,
+    v3_akey_id;
+extern const X509V3_EXT_METHOD v3_crl_num, v3_crl_reason, v3_crl_invdate;
+extern const X509V3_EXT_METHOD v3_delta_crl, v3_cpols, v3_crld,
+    v3_freshest_crl;
+extern const X509V3_EXT_METHOD v3_ocsp_nonce, v3_ocsp_accresp,
+    v3_ocsp_acutoff;
+extern const X509V3_EXT_METHOD v3_ocsp_crlid, v3_ocsp_nocheck,
+    v3_ocsp_serviceloc;
+extern const X509V3_EXT_METHOD v3_crl_hold, v3_pci;
+extern const X509V3_EXT_METHOD v3_policy_mappings, v3_policy_constraints;
+extern const X509V3_EXT_METHOD v3_name_constraints, v3_inhibit_anyp, v3_idp;
+extern const X509V3_EXT_METHOD v3_addr, v3_asid;
+
+/*
+ * This table will be searched using OBJ_bsearch so it *must* kept in order
+ * of the ext_nid values.
+ */
+
+/* TODO(fork): OCSP support */
+#define OPENSSL_NO_OCSP
+
+static const X509V3_EXT_METHOD *const standard_exts[] = {
+    &v3_nscert,
+    &v3_ns_ia5_list[0],
+    &v3_ns_ia5_list[1],
+    &v3_ns_ia5_list[2],
+    &v3_ns_ia5_list[3],
+    &v3_ns_ia5_list[4],
+    &v3_ns_ia5_list[5],
+    &v3_ns_ia5_list[6],
+    &v3_skey_id,
+    &v3_key_usage,
+    &v3_pkey_usage_period,
+    &v3_alt[0],
+    &v3_alt[1],
+    &v3_bcons,
+    &v3_crl_num,
+    &v3_cpols,
+    &v3_akey_id,
+    &v3_crld,
+    &v3_ext_ku,
+    &v3_delta_crl,
+    &v3_crl_reason,
+    &v3_crl_invdate,
+    &v3_sxnet,
+    &v3_info,
+#ifndef OPENSSL_NO_OCSP
+    &v3_ocsp_nonce,
+    &v3_ocsp_crlid,
+    &v3_ocsp_accresp,
+    &v3_ocsp_acutoff,
+    &v3_ocsp_serviceloc,
+#endif
+    &v3_ocsp_nocheck,
+    &v3_sinfo,
+    &v3_policy_constraints,
+#ifndef OPENSSL_NO_OCSP
+    &v3_crl_hold,
+#endif
+    &v3_pci,
+    &v3_name_constraints,
+    &v3_policy_mappings,
+    &v3_inhibit_anyp,
+    &v3_idp,
+    &v3_alt[2],
+    &v3_freshest_crl,
+};
+
+/* Number of standard extensions */
+
+#define STANDARD_EXTENSION_COUNT (sizeof(standard_exts)/sizeof(X509V3_EXT_METHOD *))
+
+#if defined(__cplusplus)
+} /* extern C */
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h
new file mode 100644
index 0000000..edcdd6b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h	
@@ -0,0 +1,56 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_X509V3_INTERNAL_H
+#define OPENSSL_HEADER_X509V3_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// x509v3_bytes_to_hex encodes |len| bytes from |buffer| to hex and returns a
+// newly-allocated NUL-terminated string containing the result, or NULL on
+// allocation error.
+//
+// Note this function was historically named |hex_to_string| in OpenSSL, not
+// |string_to_hex|.
+char *x509v3_bytes_to_hex(const unsigned char *buffer, long len);
+
+// x509v3_hex_string_to_bytes decodes |str| in hex and returns a newly-allocated
+// array containing the result, or NULL on error. On success, it sets |*len| to
+// the length of the result. Colon separators between bytes in the input are
+// allowed and ignored.
+//
+// Note this function was historically named |string_to_hex| in OpenSSL, not
+// |hex_to_string|.
+unsigned char *x509v3_hex_to_bytes(const char *str, long *len);
+
+// x509v3_name_cmp returns zero if |name| is equal to |cmp| or begins with |cmp|
+// followed by '.'. Otherwise, it returns a non-zero number.
+int x509v3_name_cmp(const char *name, const char *cmp);
+
+// x509v3_looks_like_dns_name returns one if |in| looks like a DNS name and zero
+// otherwise.
+OPENSSL_EXPORT int x509v3_looks_like_dns_name(const unsigned char *in,
+                                              size_t len);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_X509V3_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h.grpc_back
new file mode 100644
index 0000000..c143d73
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/internal.h.grpc_back	
@@ -0,0 +1,56 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_X509V3_INTERNAL_H
+#define OPENSSL_HEADER_X509V3_INTERNAL_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// x509v3_bytes_to_hex encodes |len| bytes from |buffer| to hex and returns a
+// newly-allocated NUL-terminated string containing the result, or NULL on
+// allocation error.
+//
+// Note this function was historically named |hex_to_string| in OpenSSL, not
+// |string_to_hex|.
+char *x509v3_bytes_to_hex(const unsigned char *buffer, long len);
+
+// x509v3_hex_string_to_bytes decodes |str| in hex and returns a newly-allocated
+// array containing the result, or NULL on error. On success, it sets |*len| to
+// the length of the result. Colon separators between bytes in the input are
+// allowed and ignored.
+//
+// Note this function was historically named |string_to_hex| in OpenSSL, not
+// |hex_to_string|.
+unsigned char *x509v3_hex_to_bytes(const char *str, long *len);
+
+// x509v3_name_cmp returns zero if |name| is equal to |cmp| or begins with |cmp|
+// followed by '.'. Otherwise, it returns a non-zero number.
+int x509v3_name_cmp(const char *name, const char *cmp);
+
+// x509v3_looks_like_dns_name returns one if |in| looks like a DNS name and zero
+// otherwise.
+OPENSSL_EXPORT int x509v3_looks_like_dns_name(const unsigned char *in,
+                                              size_t len);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_X509V3_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c
new file mode 100644
index 0000000..2aeb426
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c	
@@ -0,0 +1,286 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+#include "../internal.h"
+
+static int policy_data_cmp(const X509_POLICY_DATA **a,
+                           const X509_POLICY_DATA **b);
+static int policy_cache_set_int(long *out, ASN1_INTEGER *value);
+
+/*
+ * Set cache entry according to CertificatePolicies extension. Note: this
+ * destroys the passed CERTIFICATEPOLICIES structure.
+ */
+
+static int policy_cache_create(X509 *x,
+                               CERTIFICATEPOLICIES *policies, int crit)
+{
+    size_t i;
+    int ret = 0;
+    X509_POLICY_CACHE *cache = x->policy_cache;
+    X509_POLICY_DATA *data = NULL;
+    POLICYINFO *policy;
+    if (sk_POLICYINFO_num(policies) == 0)
+        goto bad_policy;
+    cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp);
+    if (!cache->data)
+        goto bad_policy;
+    for (i = 0; i < sk_POLICYINFO_num(policies); i++) {
+        policy = sk_POLICYINFO_value(policies, i);
+        data = policy_data_new(policy, NULL, crit);
+        if (!data)
+            goto bad_policy;
+        /*
+         * Duplicate policy OIDs are illegal: reject if matches found.
+         */
+        sk_X509_POLICY_DATA_sort(cache->data);
+        if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
+            if (cache->anyPolicy) {
+                ret = -1;
+                goto bad_policy;
+            }
+            cache->anyPolicy = data;
+        } else if (sk_X509_POLICY_DATA_find(cache->data, NULL, data)) {
+            ret = -1;
+            goto bad_policy;
+        } else if (!sk_X509_POLICY_DATA_push(cache->data, data))
+            goto bad_policy;
+        data = NULL;
+    }
+    ret = 1;
+ bad_policy:
+    if (ret == -1)
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    if (data)
+        policy_data_free(data);
+    sk_POLICYINFO_pop_free(policies, POLICYINFO_free);
+    if (ret <= 0) {
+        sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
+        cache->data = NULL;
+    }
+    return ret;
+}
+
+static int policy_cache_new(X509 *x)
+{
+    X509_POLICY_CACHE *cache;
+    ASN1_INTEGER *ext_any = NULL;
+    POLICY_CONSTRAINTS *ext_pcons = NULL;
+    CERTIFICATEPOLICIES *ext_cpols = NULL;
+    POLICY_MAPPINGS *ext_pmaps = NULL;
+    int i;
+    cache = OPENSSL_malloc(sizeof(X509_POLICY_CACHE));
+    if (!cache)
+        return 0;
+    cache->anyPolicy = NULL;
+    cache->data = NULL;
+    cache->any_skip = -1;
+    cache->explicit_skip = -1;
+    cache->map_skip = -1;
+
+    x->policy_cache = cache;
+
+    /*
+     * Handle requireExplicitPolicy *first*. Need to process this even if we
+     * don't have any policies.
+     */
+    ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL);
+
+    if (!ext_pcons) {
+        if (i != -1)
+            goto bad_cache;
+    } else {
+        if (!ext_pcons->requireExplicitPolicy
+            && !ext_pcons->inhibitPolicyMapping)
+            goto bad_cache;
+        if (!policy_cache_set_int(&cache->explicit_skip,
+                                  ext_pcons->requireExplicitPolicy))
+            goto bad_cache;
+        if (!policy_cache_set_int(&cache->map_skip,
+                                  ext_pcons->inhibitPolicyMapping))
+            goto bad_cache;
+    }
+
+    /* Process CertificatePolicies */
+
+    ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL);
+    /*
+     * If no CertificatePolicies extension or problem decoding then there is
+     * no point continuing because the valid policies will be NULL.
+     */
+    if (!ext_cpols) {
+        /* If not absent some problem with extension */
+        if (i != -1)
+            goto bad_cache;
+        return 1;
+    }
+
+    i = policy_cache_create(x, ext_cpols, i);
+
+    /* NB: ext_cpols freed by policy_cache_set_policies */
+
+    if (i <= 0)
+        return i;
+
+    ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL);
+
+    if (!ext_pmaps) {
+        /* If not absent some problem with extension */
+        if (i != -1)
+            goto bad_cache;
+    } else {
+        i = policy_cache_set_mapping(x, ext_pmaps);
+        if (i <= 0)
+            goto bad_cache;
+    }
+
+    ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL);
+
+    if (!ext_any) {
+        if (i != -1)
+            goto bad_cache;
+    } else if (!policy_cache_set_int(&cache->any_skip, ext_any))
+        goto bad_cache;
+
+    if (0) {
+ bad_cache:
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    }
+
+    if (ext_pcons)
+        POLICY_CONSTRAINTS_free(ext_pcons);
+
+    if (ext_any)
+        ASN1_INTEGER_free(ext_any);
+
+    return 1;
+
+}
+
+void policy_cache_free(X509_POLICY_CACHE *cache)
+{
+    if (!cache)
+        return;
+    if (cache->anyPolicy)
+        policy_data_free(cache->anyPolicy);
+    if (cache->data)
+        sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
+    OPENSSL_free(cache);
+}
+
+/*
+ * g_x509_policy_cache_lock is used to protect against concurrent calls to
+ * |policy_cache_new|. Ideally this would be done with a |CRYPTO_once_t| in
+ * the |X509| structure, but |CRYPTO_once_t| isn't public.
+ */
+static struct CRYPTO_STATIC_MUTEX g_x509_policy_cache_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+const X509_POLICY_CACHE *policy_cache_set(X509 *x)
+{
+    X509_POLICY_CACHE *cache;
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_x509_policy_cache_lock);
+    cache = x->policy_cache;
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_x509_policy_cache_lock);
+
+    if (cache != NULL)
+        return cache;
+
+    CRYPTO_STATIC_MUTEX_lock_write(&g_x509_policy_cache_lock);
+    if (x->policy_cache == NULL)
+        policy_cache_new(x);
+    cache = x->policy_cache;
+    CRYPTO_STATIC_MUTEX_unlock_write(&g_x509_policy_cache_lock);
+
+    return cache;
+}
+
+X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
+                                         const ASN1_OBJECT *id)
+{
+    size_t idx;
+    X509_POLICY_DATA tmp;
+
+    tmp.valid_policy = (ASN1_OBJECT *)id;
+    sk_X509_POLICY_DATA_sort(cache->data);
+    if (!sk_X509_POLICY_DATA_find(cache->data, &idx, &tmp))
+        return NULL;
+    return sk_X509_POLICY_DATA_value(cache->data, idx);
+}
+
+static int policy_data_cmp(const X509_POLICY_DATA **a,
+                           const X509_POLICY_DATA **b)
+{
+    return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy);
+}
+
+static int policy_cache_set_int(long *out, ASN1_INTEGER *value)
+{
+    if (value == NULL)
+        return 1;
+    if (value->type == V_ASN1_NEG_INTEGER)
+        return 0;
+    *out = ASN1_INTEGER_get(value);
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c.grpc_back
new file mode 100644
index 0000000..755c079
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_cache.c.grpc_back	
@@ -0,0 +1,286 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+#include "../internal.h"
+
+static int policy_data_cmp(const X509_POLICY_DATA **a,
+                           const X509_POLICY_DATA **b);
+static int policy_cache_set_int(long *out, ASN1_INTEGER *value);
+
+/*
+ * Set cache entry according to CertificatePolicies extension. Note: this
+ * destroys the passed CERTIFICATEPOLICIES structure.
+ */
+
+static int policy_cache_create(X509 *x,
+                               CERTIFICATEPOLICIES *policies, int crit)
+{
+    size_t i;
+    int ret = 0;
+    X509_POLICY_CACHE *cache = x->policy_cache;
+    X509_POLICY_DATA *data = NULL;
+    POLICYINFO *policy;
+    if (sk_POLICYINFO_num(policies) == 0)
+        goto bad_policy;
+    cache->data = sk_X509_POLICY_DATA_new(policy_data_cmp);
+    if (!cache->data)
+        goto bad_policy;
+    for (i = 0; i < sk_POLICYINFO_num(policies); i++) {
+        policy = sk_POLICYINFO_value(policies, i);
+        data = policy_data_new(policy, NULL, crit);
+        if (!data)
+            goto bad_policy;
+        /*
+         * Duplicate policy OIDs are illegal: reject if matches found.
+         */
+        sk_X509_POLICY_DATA_sort(cache->data);
+        if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
+            if (cache->anyPolicy) {
+                ret = -1;
+                goto bad_policy;
+            }
+            cache->anyPolicy = data;
+        } else if (sk_X509_POLICY_DATA_find(cache->data, NULL, data)) {
+            ret = -1;
+            goto bad_policy;
+        } else if (!sk_X509_POLICY_DATA_push(cache->data, data))
+            goto bad_policy;
+        data = NULL;
+    }
+    ret = 1;
+ bad_policy:
+    if (ret == -1)
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    if (data)
+        policy_data_free(data);
+    sk_POLICYINFO_pop_free(policies, POLICYINFO_free);
+    if (ret <= 0) {
+        sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
+        cache->data = NULL;
+    }
+    return ret;
+}
+
+static int policy_cache_new(X509 *x)
+{
+    X509_POLICY_CACHE *cache;
+    ASN1_INTEGER *ext_any = NULL;
+    POLICY_CONSTRAINTS *ext_pcons = NULL;
+    CERTIFICATEPOLICIES *ext_cpols = NULL;
+    POLICY_MAPPINGS *ext_pmaps = NULL;
+    int i;
+    cache = OPENSSL_malloc(sizeof(X509_POLICY_CACHE));
+    if (!cache)
+        return 0;
+    cache->anyPolicy = NULL;
+    cache->data = NULL;
+    cache->any_skip = -1;
+    cache->explicit_skip = -1;
+    cache->map_skip = -1;
+
+    x->policy_cache = cache;
+
+    /*
+     * Handle requireExplicitPolicy *first*. Need to process this even if we
+     * don't have any policies.
+     */
+    ext_pcons = X509_get_ext_d2i(x, NID_policy_constraints, &i, NULL);
+
+    if (!ext_pcons) {
+        if (i != -1)
+            goto bad_cache;
+    } else {
+        if (!ext_pcons->requireExplicitPolicy
+            && !ext_pcons->inhibitPolicyMapping)
+            goto bad_cache;
+        if (!policy_cache_set_int(&cache->explicit_skip,
+                                  ext_pcons->requireExplicitPolicy))
+            goto bad_cache;
+        if (!policy_cache_set_int(&cache->map_skip,
+                                  ext_pcons->inhibitPolicyMapping))
+            goto bad_cache;
+    }
+
+    /* Process CertificatePolicies */
+
+    ext_cpols = X509_get_ext_d2i(x, NID_certificate_policies, &i, NULL);
+    /*
+     * If no CertificatePolicies extension or problem decoding then there is
+     * no point continuing because the valid policies will be NULL.
+     */
+    if (!ext_cpols) {
+        /* If not absent some problem with extension */
+        if (i != -1)
+            goto bad_cache;
+        return 1;
+    }
+
+    i = policy_cache_create(x, ext_cpols, i);
+
+    /* NB: ext_cpols freed by policy_cache_set_policies */
+
+    if (i <= 0)
+        return i;
+
+    ext_pmaps = X509_get_ext_d2i(x, NID_policy_mappings, &i, NULL);
+
+    if (!ext_pmaps) {
+        /* If not absent some problem with extension */
+        if (i != -1)
+            goto bad_cache;
+    } else {
+        i = policy_cache_set_mapping(x, ext_pmaps);
+        if (i <= 0)
+            goto bad_cache;
+    }
+
+    ext_any = X509_get_ext_d2i(x, NID_inhibit_any_policy, &i, NULL);
+
+    if (!ext_any) {
+        if (i != -1)
+            goto bad_cache;
+    } else if (!policy_cache_set_int(&cache->any_skip, ext_any))
+        goto bad_cache;
+
+    if (0) {
+ bad_cache:
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    }
+
+    if (ext_pcons)
+        POLICY_CONSTRAINTS_free(ext_pcons);
+
+    if (ext_any)
+        ASN1_INTEGER_free(ext_any);
+
+    return 1;
+
+}
+
+void policy_cache_free(X509_POLICY_CACHE *cache)
+{
+    if (!cache)
+        return;
+    if (cache->anyPolicy)
+        policy_data_free(cache->anyPolicy);
+    if (cache->data)
+        sk_X509_POLICY_DATA_pop_free(cache->data, policy_data_free);
+    OPENSSL_free(cache);
+}
+
+/*
+ * g_x509_policy_cache_lock is used to protect against concurrent calls to
+ * |policy_cache_new|. Ideally this would be done with a |CRYPTO_once_t| in
+ * the |X509| structure, but |CRYPTO_once_t| isn't public.
+ */
+static struct CRYPTO_STATIC_MUTEX g_x509_policy_cache_lock =
+    CRYPTO_STATIC_MUTEX_INIT;
+
+const X509_POLICY_CACHE *policy_cache_set(X509 *x)
+{
+    X509_POLICY_CACHE *cache;
+
+    CRYPTO_STATIC_MUTEX_lock_read(&g_x509_policy_cache_lock);
+    cache = x->policy_cache;
+    CRYPTO_STATIC_MUTEX_unlock_read(&g_x509_policy_cache_lock);
+
+    if (cache != NULL)
+        return cache;
+
+    CRYPTO_STATIC_MUTEX_lock_write(&g_x509_policy_cache_lock);
+    if (x->policy_cache == NULL)
+        policy_cache_new(x);
+    cache = x->policy_cache;
+    CRYPTO_STATIC_MUTEX_unlock_write(&g_x509_policy_cache_lock);
+
+    return cache;
+}
+
+X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
+                                         const ASN1_OBJECT *id)
+{
+    size_t idx;
+    X509_POLICY_DATA tmp;
+
+    tmp.valid_policy = (ASN1_OBJECT *)id;
+    sk_X509_POLICY_DATA_sort(cache->data);
+    if (!sk_X509_POLICY_DATA_find(cache->data, &idx, &tmp))
+        return NULL;
+    return sk_X509_POLICY_DATA_value(cache->data, idx);
+}
+
+static int policy_data_cmp(const X509_POLICY_DATA **a,
+                           const X509_POLICY_DATA **b)
+{
+    return OBJ_cmp((*a)->valid_policy, (*b)->valid_policy);
+}
+
+static int policy_cache_set_int(long *out, ASN1_INTEGER *value)
+{
+    if (value == NULL)
+        return 1;
+    if (value->type == V_ASN1_NEG_INTEGER)
+        return 0;
+    *out = ASN1_INTEGER_get(value);
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c
new file mode 100644
index 0000000..e8ab073
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c	
@@ -0,0 +1,130 @@
+/* pcy_data.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+
+/* Policy Node routines */
+
+void policy_data_free(X509_POLICY_DATA *data)
+{
+    ASN1_OBJECT_free(data->valid_policy);
+    /* Don't free qualifiers if shared */
+    if (!(data->flags & POLICY_DATA_FLAG_SHARED_QUALIFIERS))
+        sk_POLICYQUALINFO_pop_free(data->qualifier_set, POLICYQUALINFO_free);
+    sk_ASN1_OBJECT_pop_free(data->expected_policy_set, ASN1_OBJECT_free);
+    OPENSSL_free(data);
+}
+
+/*
+ * Create a data based on an existing policy. If 'id' is NULL use the oid in
+ * the policy, otherwise use 'id'. This behaviour covers the two types of
+ * data in RFC3280: data with from a CertificatePolcies extension and
+ * additional data with just the qualifiers of anyPolicy and ID from another
+ * source.
+ */
+
+X509_POLICY_DATA *policy_data_new(POLICYINFO *policy,
+                                  const ASN1_OBJECT *cid, int crit)
+{
+    X509_POLICY_DATA *ret;
+    ASN1_OBJECT *id;
+    if (!policy && !cid)
+        return NULL;
+    if (cid) {
+        id = OBJ_dup(cid);
+        if (!id)
+            return NULL;
+    } else
+        id = NULL;
+    ret = OPENSSL_malloc(sizeof(X509_POLICY_DATA));
+    if (!ret)
+        return NULL;
+    ret->expected_policy_set = sk_ASN1_OBJECT_new_null();
+    if (!ret->expected_policy_set) {
+        OPENSSL_free(ret);
+        if (id)
+            ASN1_OBJECT_free(id);
+        return NULL;
+    }
+
+    if (crit)
+        ret->flags = POLICY_DATA_FLAG_CRITICAL;
+    else
+        ret->flags = 0;
+
+    if (id)
+        ret->valid_policy = id;
+    else {
+        ret->valid_policy = policy->policyid;
+        policy->policyid = NULL;
+    }
+
+    if (policy) {
+        ret->qualifier_set = policy->qualifiers;
+        policy->qualifiers = NULL;
+    } else
+        ret->qualifier_set = NULL;
+
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c.grpc_back
new file mode 100644
index 0000000..498de4d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_data.c.grpc_back	
@@ -0,0 +1,130 @@
+/* pcy_data.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+
+/* Policy Node routines */
+
+void policy_data_free(X509_POLICY_DATA *data)
+{
+    ASN1_OBJECT_free(data->valid_policy);
+    /* Don't free qualifiers if shared */
+    if (!(data->flags & POLICY_DATA_FLAG_SHARED_QUALIFIERS))
+        sk_POLICYQUALINFO_pop_free(data->qualifier_set, POLICYQUALINFO_free);
+    sk_ASN1_OBJECT_pop_free(data->expected_policy_set, ASN1_OBJECT_free);
+    OPENSSL_free(data);
+}
+
+/*
+ * Create a data based on an existing policy. If 'id' is NULL use the oid in
+ * the policy, otherwise use 'id'. This behaviour covers the two types of
+ * data in RFC3280: data with from a CertificatePolcies extension and
+ * additional data with just the qualifiers of anyPolicy and ID from another
+ * source.
+ */
+
+X509_POLICY_DATA *policy_data_new(POLICYINFO *policy,
+                                  const ASN1_OBJECT *cid, int crit)
+{
+    X509_POLICY_DATA *ret;
+    ASN1_OBJECT *id;
+    if (!policy && !cid)
+        return NULL;
+    if (cid) {
+        id = OBJ_dup(cid);
+        if (!id)
+            return NULL;
+    } else
+        id = NULL;
+    ret = OPENSSL_malloc(sizeof(X509_POLICY_DATA));
+    if (!ret)
+        return NULL;
+    ret->expected_policy_set = sk_ASN1_OBJECT_new_null();
+    if (!ret->expected_policy_set) {
+        OPENSSL_free(ret);
+        if (id)
+            ASN1_OBJECT_free(id);
+        return NULL;
+    }
+
+    if (crit)
+        ret->flags = POLICY_DATA_FLAG_CRITICAL;
+    else
+        ret->flags = 0;
+
+    if (id)
+        ret->valid_policy = id;
+    else {
+        ret->valid_policy = policy->policyid;
+        policy->policyid = NULL;
+    }
+
+    if (policy) {
+        ret->qualifier_set = policy->qualifiers;
+        policy->qualifiers = NULL;
+    } else
+        ret->qualifier_set = NULL;
+
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h
new file mode 100644
index 0000000..fc6e20a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h	
@@ -0,0 +1,217 @@
+/* pcy_int.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+typedef struct X509_POLICY_DATA_st X509_POLICY_DATA;
+
+DEFINE_STACK_OF(X509_POLICY_DATA)
+
+/* Internal structures */
+
+/*
+ * This structure and the field names correspond to the Policy 'node' of
+ * RFC3280. NB this structure contains no pointers to parent or child data:
+ * X509_POLICY_NODE contains that. This means that the main policy data can
+ * be kept static and cached with the certificate.
+ */
+
+struct X509_POLICY_DATA_st {
+    unsigned int flags;
+    /* Policy OID and qualifiers for this data */
+    ASN1_OBJECT *valid_policy;
+    STACK_OF(POLICYQUALINFO) *qualifier_set;
+    STACK_OF(ASN1_OBJECT) *expected_policy_set;
+};
+
+/* X509_POLICY_DATA flags values */
+
+/*
+ * This flag indicates the structure has been mapped using a policy mapping
+ * extension. If policy mapping is not active its references get deleted.
+ */
+
+#define POLICY_DATA_FLAG_MAPPED                 0x1
+
+/*
+ * This flag indicates the data doesn't correspond to a policy in Certificate
+ * Policies: it has been mapped to any policy.
+ */
+
+#define POLICY_DATA_FLAG_MAPPED_ANY             0x2
+
+/* AND with flags to see if any mapping has occurred */
+
+#define POLICY_DATA_FLAG_MAP_MASK               0x3
+
+/* qualifiers are shared and shouldn't be freed */
+
+#define POLICY_DATA_FLAG_SHARED_QUALIFIERS      0x4
+
+/* Parent node is an extra node and should be freed */
+
+#define POLICY_DATA_FLAG_EXTRA_NODE             0x8
+
+/* Corresponding CertificatePolicies is critical */
+
+#define POLICY_DATA_FLAG_CRITICAL               0x10
+
+/* This structure is cached with a certificate */
+
+struct X509_POLICY_CACHE_st {
+    /* anyPolicy data or NULL if no anyPolicy */
+    X509_POLICY_DATA *anyPolicy;
+    /* other policy data */
+    STACK_OF(X509_POLICY_DATA) *data;
+    /* If InhibitAnyPolicy present this is its value or -1 if absent. */
+    long any_skip;
+    /*
+     * If policyConstraints and requireExplicitPolicy present this is its
+     * value or -1 if absent.
+     */
+    long explicit_skip;
+    /*
+     * If policyConstraints and policyMapping present this is its value or -1
+     * if absent.
+     */
+    long map_skip;
+};
+
+/*
+ * #define POLICY_CACHE_FLAG_CRITICAL POLICY_DATA_FLAG_CRITICAL
+ */
+
+/* This structure represents the relationship between nodes */
+
+struct X509_POLICY_NODE_st {
+    /* node data this refers to */
+    const X509_POLICY_DATA *data;
+    /* Parent node */
+    X509_POLICY_NODE *parent;
+    /* Number of child nodes */
+    int nchild;
+};
+
+struct X509_POLICY_LEVEL_st {
+    /* Cert for this level */
+    X509 *cert;
+    /* nodes at this level */
+    STACK_OF(X509_POLICY_NODE) *nodes;
+    /* anyPolicy node */
+    X509_POLICY_NODE *anyPolicy;
+    /* Extra data */
+    /*
+     * STACK_OF(X509_POLICY_DATA) *extra_data;
+     */
+    unsigned int flags;
+};
+
+struct X509_POLICY_TREE_st {
+    /* This is the tree 'level' data */
+    X509_POLICY_LEVEL *levels;
+    int nlevel;
+    /*
+     * Extra policy data when additional nodes (not from the certificate) are
+     * required.
+     */
+    STACK_OF(X509_POLICY_DATA) *extra_data;
+    /* This is the authority constained policy set */
+    STACK_OF(X509_POLICY_NODE) *auth_policies;
+    STACK_OF(X509_POLICY_NODE) *user_policies;
+    unsigned int flags;
+};
+
+/* Set if anyPolicy present in user policies */
+#define POLICY_FLAG_ANY_POLICY          0x2
+
+/* Useful macros */
+
+#define node_data_critical(data) ((data)->flags & POLICY_DATA_FLAG_CRITICAL)
+#define node_critical(node) node_data_critical((node)->data)
+
+/* Internal functions */
+
+X509_POLICY_DATA *policy_data_new(POLICYINFO *policy, const ASN1_OBJECT *id,
+                                  int crit);
+void policy_data_free(X509_POLICY_DATA *data);
+
+X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
+                                         const ASN1_OBJECT *id);
+int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps);
+
+STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void);
+
+void policy_cache_init(void);
+
+void policy_cache_free(X509_POLICY_CACHE *cache);
+
+X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
+                                  const X509_POLICY_NODE *parent,
+                                  const ASN1_OBJECT *id);
+
+X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *sk,
+                               const ASN1_OBJECT *id);
+
+X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
+                                 X509_POLICY_DATA *data,
+                                 X509_POLICY_NODE *parent,
+                                 X509_POLICY_TREE *tree);
+void policy_node_free(X509_POLICY_NODE *node);
+int policy_node_match(const X509_POLICY_LEVEL *lvl,
+                      const X509_POLICY_NODE *node, const ASN1_OBJECT *oid);
+
+const X509_POLICY_CACHE *policy_cache_set(X509 *x);
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h.grpc_back
new file mode 100644
index 0000000..fc6e20a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_int.h.grpc_back	
@@ -0,0 +1,217 @@
+/* pcy_int.h */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+typedef struct X509_POLICY_DATA_st X509_POLICY_DATA;
+
+DEFINE_STACK_OF(X509_POLICY_DATA)
+
+/* Internal structures */
+
+/*
+ * This structure and the field names correspond to the Policy 'node' of
+ * RFC3280. NB this structure contains no pointers to parent or child data:
+ * X509_POLICY_NODE contains that. This means that the main policy data can
+ * be kept static and cached with the certificate.
+ */
+
+struct X509_POLICY_DATA_st {
+    unsigned int flags;
+    /* Policy OID and qualifiers for this data */
+    ASN1_OBJECT *valid_policy;
+    STACK_OF(POLICYQUALINFO) *qualifier_set;
+    STACK_OF(ASN1_OBJECT) *expected_policy_set;
+};
+
+/* X509_POLICY_DATA flags values */
+
+/*
+ * This flag indicates the structure has been mapped using a policy mapping
+ * extension. If policy mapping is not active its references get deleted.
+ */
+
+#define POLICY_DATA_FLAG_MAPPED                 0x1
+
+/*
+ * This flag indicates the data doesn't correspond to a policy in Certificate
+ * Policies: it has been mapped to any policy.
+ */
+
+#define POLICY_DATA_FLAG_MAPPED_ANY             0x2
+
+/* AND with flags to see if any mapping has occurred */
+
+#define POLICY_DATA_FLAG_MAP_MASK               0x3
+
+/* qualifiers are shared and shouldn't be freed */
+
+#define POLICY_DATA_FLAG_SHARED_QUALIFIERS      0x4
+
+/* Parent node is an extra node and should be freed */
+
+#define POLICY_DATA_FLAG_EXTRA_NODE             0x8
+
+/* Corresponding CertificatePolicies is critical */
+
+#define POLICY_DATA_FLAG_CRITICAL               0x10
+
+/* This structure is cached with a certificate */
+
+struct X509_POLICY_CACHE_st {
+    /* anyPolicy data or NULL if no anyPolicy */
+    X509_POLICY_DATA *anyPolicy;
+    /* other policy data */
+    STACK_OF(X509_POLICY_DATA) *data;
+    /* If InhibitAnyPolicy present this is its value or -1 if absent. */
+    long any_skip;
+    /*
+     * If policyConstraints and requireExplicitPolicy present this is its
+     * value or -1 if absent.
+     */
+    long explicit_skip;
+    /*
+     * If policyConstraints and policyMapping present this is its value or -1
+     * if absent.
+     */
+    long map_skip;
+};
+
+/*
+ * #define POLICY_CACHE_FLAG_CRITICAL POLICY_DATA_FLAG_CRITICAL
+ */
+
+/* This structure represents the relationship between nodes */
+
+struct X509_POLICY_NODE_st {
+    /* node data this refers to */
+    const X509_POLICY_DATA *data;
+    /* Parent node */
+    X509_POLICY_NODE *parent;
+    /* Number of child nodes */
+    int nchild;
+};
+
+struct X509_POLICY_LEVEL_st {
+    /* Cert for this level */
+    X509 *cert;
+    /* nodes at this level */
+    STACK_OF(X509_POLICY_NODE) *nodes;
+    /* anyPolicy node */
+    X509_POLICY_NODE *anyPolicy;
+    /* Extra data */
+    /*
+     * STACK_OF(X509_POLICY_DATA) *extra_data;
+     */
+    unsigned int flags;
+};
+
+struct X509_POLICY_TREE_st {
+    /* This is the tree 'level' data */
+    X509_POLICY_LEVEL *levels;
+    int nlevel;
+    /*
+     * Extra policy data when additional nodes (not from the certificate) are
+     * required.
+     */
+    STACK_OF(X509_POLICY_DATA) *extra_data;
+    /* This is the authority constained policy set */
+    STACK_OF(X509_POLICY_NODE) *auth_policies;
+    STACK_OF(X509_POLICY_NODE) *user_policies;
+    unsigned int flags;
+};
+
+/* Set if anyPolicy present in user policies */
+#define POLICY_FLAG_ANY_POLICY          0x2
+
+/* Useful macros */
+
+#define node_data_critical(data) ((data)->flags & POLICY_DATA_FLAG_CRITICAL)
+#define node_critical(node) node_data_critical((node)->data)
+
+/* Internal functions */
+
+X509_POLICY_DATA *policy_data_new(POLICYINFO *policy, const ASN1_OBJECT *id,
+                                  int crit);
+void policy_data_free(X509_POLICY_DATA *data);
+
+X509_POLICY_DATA *policy_cache_find_data(const X509_POLICY_CACHE *cache,
+                                         const ASN1_OBJECT *id);
+int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps);
+
+STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void);
+
+void policy_cache_init(void);
+
+void policy_cache_free(X509_POLICY_CACHE *cache);
+
+X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
+                                  const X509_POLICY_NODE *parent,
+                                  const ASN1_OBJECT *id);
+
+X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *sk,
+                               const ASN1_OBJECT *id);
+
+X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
+                                 X509_POLICY_DATA *data,
+                                 X509_POLICY_NODE *parent,
+                                 X509_POLICY_TREE *tree);
+void policy_node_free(X509_POLICY_NODE *node);
+int policy_node_match(const X509_POLICY_LEVEL *lvl,
+                      const X509_POLICY_NODE *node, const ASN1_OBJECT *oid);
+
+const X509_POLICY_CACHE *policy_cache_set(X509 *x);
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c
new file mode 100644
index 0000000..f7283a6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c	
@@ -0,0 +1,155 @@
+/* pcy_lib.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+
+/* accessor functions */
+
+/* X509_POLICY_TREE stuff */
+
+int X509_policy_tree_level_count(const X509_POLICY_TREE *tree)
+{
+    if (!tree)
+        return 0;
+    return tree->nlevel;
+}
+
+X509_POLICY_LEVEL *X509_policy_tree_get0_level(const X509_POLICY_TREE *tree,
+                                               int i)
+{
+    if (!tree || (i < 0) || (i >= tree->nlevel))
+        return NULL;
+    return tree->levels + i;
+}
+
+STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_policies(const
+                                                           X509_POLICY_TREE
+                                                           *tree)
+{
+    if (!tree)
+        return NULL;
+    return tree->auth_policies;
+}
+
+STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_user_policies(const
+                                                                X509_POLICY_TREE
+                                                                *tree)
+{
+    if (!tree)
+        return NULL;
+    if (tree->flags & POLICY_FLAG_ANY_POLICY)
+        return tree->auth_policies;
+    else
+        return tree->user_policies;
+}
+
+/* X509_POLICY_LEVEL stuff */
+
+int X509_policy_level_node_count(X509_POLICY_LEVEL *level)
+{
+    int n;
+    if (!level)
+        return 0;
+    if (level->anyPolicy)
+        n = 1;
+    else
+        n = 0;
+    if (level->nodes)
+        n += sk_X509_POLICY_NODE_num(level->nodes);
+    return n;
+}
+
+X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level, int i)
+{
+    if (!level)
+        return NULL;
+    if (level->anyPolicy) {
+        if (i == 0)
+            return level->anyPolicy;
+        i--;
+    }
+    return sk_X509_POLICY_NODE_value(level->nodes, i);
+}
+
+/* X509_POLICY_NODE stuff */
+
+const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node)
+{
+    if (!node)
+        return NULL;
+    return node->data->valid_policy;
+}
+
+STACK_OF(POLICYQUALINFO) *X509_policy_node_get0_qualifiers(const
+                                                           X509_POLICY_NODE
+                                                           *node)
+{
+    if (!node)
+        return NULL;
+    return node->data->qualifier_set;
+}
+
+const X509_POLICY_NODE *X509_policy_node_get0_parent(const X509_POLICY_NODE
+                                                     *node)
+{
+    if (!node)
+        return NULL;
+    return node->parent;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c.grpc_back
new file mode 100644
index 0000000..7d5f067
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_lib.c.grpc_back	
@@ -0,0 +1,155 @@
+/* pcy_lib.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+
+/* accessor functions */
+
+/* X509_POLICY_TREE stuff */
+
+int X509_policy_tree_level_count(const X509_POLICY_TREE *tree)
+{
+    if (!tree)
+        return 0;
+    return tree->nlevel;
+}
+
+X509_POLICY_LEVEL *X509_policy_tree_get0_level(const X509_POLICY_TREE *tree,
+                                               int i)
+{
+    if (!tree || (i < 0) || (i >= tree->nlevel))
+        return NULL;
+    return tree->levels + i;
+}
+
+STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_policies(const
+                                                           X509_POLICY_TREE
+                                                           *tree)
+{
+    if (!tree)
+        return NULL;
+    return tree->auth_policies;
+}
+
+STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_user_policies(const
+                                                                X509_POLICY_TREE
+                                                                *tree)
+{
+    if (!tree)
+        return NULL;
+    if (tree->flags & POLICY_FLAG_ANY_POLICY)
+        return tree->auth_policies;
+    else
+        return tree->user_policies;
+}
+
+/* X509_POLICY_LEVEL stuff */
+
+int X509_policy_level_node_count(X509_POLICY_LEVEL *level)
+{
+    int n;
+    if (!level)
+        return 0;
+    if (level->anyPolicy)
+        n = 1;
+    else
+        n = 0;
+    if (level->nodes)
+        n += sk_X509_POLICY_NODE_num(level->nodes);
+    return n;
+}
+
+X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level, int i)
+{
+    if (!level)
+        return NULL;
+    if (level->anyPolicy) {
+        if (i == 0)
+            return level->anyPolicy;
+        i--;
+    }
+    return sk_X509_POLICY_NODE_value(level->nodes, i);
+}
+
+/* X509_POLICY_NODE stuff */
+
+const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node)
+{
+    if (!node)
+        return NULL;
+    return node->data->valid_policy;
+}
+
+STACK_OF(POLICYQUALINFO) *X509_policy_node_get0_qualifiers(const
+                                                           X509_POLICY_NODE
+                                                           *node)
+{
+    if (!node)
+        return NULL;
+    return node->data->qualifier_set;
+}
+
+const X509_POLICY_NODE *X509_policy_node_get0_parent(const X509_POLICY_NODE
+                                                     *node)
+{
+    if (!node)
+        return NULL;
+    return node->parent;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c
new file mode 100644
index 0000000..e0a1520
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c	
@@ -0,0 +1,130 @@
+/* pcy_map.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+
+/*
+ * Set policy mapping entries in cache. Note: this modifies the passed
+ * POLICY_MAPPINGS structure
+ */
+
+int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps)
+{
+    POLICY_MAPPING *map;
+    X509_POLICY_DATA *data;
+    X509_POLICY_CACHE *cache = x->policy_cache;
+    size_t i;
+    int ret = 0;
+    if (sk_POLICY_MAPPING_num(maps) == 0) {
+        ret = -1;
+        goto bad_mapping;
+    }
+    for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++) {
+        map = sk_POLICY_MAPPING_value(maps, i);
+        /* Reject if map to or from anyPolicy */
+        if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy)
+            || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy)) {
+            ret = -1;
+            goto bad_mapping;
+        }
+
+        /* Attempt to find matching policy data */
+        data = policy_cache_find_data(cache, map->issuerDomainPolicy);
+        /* If we don't have anyPolicy can't map */
+        if (!data && !cache->anyPolicy)
+            continue;
+
+        /* Create a NODE from anyPolicy */
+        if (!data) {
+            data = policy_data_new(NULL, map->issuerDomainPolicy,
+                                   cache->anyPolicy->flags
+                                   & POLICY_DATA_FLAG_CRITICAL);
+            if (!data)
+                goto bad_mapping;
+            data->qualifier_set = cache->anyPolicy->qualifier_set;
+            /*
+             * map->issuerDomainPolicy = NULL;
+             */
+            data->flags |= POLICY_DATA_FLAG_MAPPED_ANY;
+            data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+            if (!sk_X509_POLICY_DATA_push(cache->data, data)) {
+                policy_data_free(data);
+                goto bad_mapping;
+            }
+        } else
+            data->flags |= POLICY_DATA_FLAG_MAPPED;
+        if (!sk_ASN1_OBJECT_push(data->expected_policy_set,
+                                 map->subjectDomainPolicy))
+            goto bad_mapping;
+        map->subjectDomainPolicy = NULL;
+
+    }
+
+    ret = 1;
+ bad_mapping:
+    if (ret == -1)
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free);
+    return ret;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c.grpc_back
new file mode 100644
index 0000000..7263c69
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_map.c.grpc_back	
@@ -0,0 +1,130 @@
+/* pcy_map.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+
+/*
+ * Set policy mapping entries in cache. Note: this modifies the passed
+ * POLICY_MAPPINGS structure
+ */
+
+int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps)
+{
+    POLICY_MAPPING *map;
+    X509_POLICY_DATA *data;
+    X509_POLICY_CACHE *cache = x->policy_cache;
+    size_t i;
+    int ret = 0;
+    if (sk_POLICY_MAPPING_num(maps) == 0) {
+        ret = -1;
+        goto bad_mapping;
+    }
+    for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++) {
+        map = sk_POLICY_MAPPING_value(maps, i);
+        /* Reject if map to or from anyPolicy */
+        if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy)
+            || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy)) {
+            ret = -1;
+            goto bad_mapping;
+        }
+
+        /* Attempt to find matching policy data */
+        data = policy_cache_find_data(cache, map->issuerDomainPolicy);
+        /* If we don't have anyPolicy can't map */
+        if (!data && !cache->anyPolicy)
+            continue;
+
+        /* Create a NODE from anyPolicy */
+        if (!data) {
+            data = policy_data_new(NULL, map->issuerDomainPolicy,
+                                   cache->anyPolicy->flags
+                                   & POLICY_DATA_FLAG_CRITICAL);
+            if (!data)
+                goto bad_mapping;
+            data->qualifier_set = cache->anyPolicy->qualifier_set;
+            /*
+             * map->issuerDomainPolicy = NULL;
+             */
+            data->flags |= POLICY_DATA_FLAG_MAPPED_ANY;
+            data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+            if (!sk_X509_POLICY_DATA_push(cache->data, data)) {
+                policy_data_free(data);
+                goto bad_mapping;
+            }
+        } else
+            data->flags |= POLICY_DATA_FLAG_MAPPED;
+        if (!sk_ASN1_OBJECT_push(data->expected_policy_set,
+                                 map->subjectDomainPolicy))
+            goto bad_mapping;
+        map->subjectDomainPolicy = NULL;
+
+    }
+
+    ret = 1;
+ bad_mapping:
+    if (ret == -1)
+        x->ex_flags |= EXFLAG_INVALID_POLICY;
+    sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free);
+    return ret;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c
new file mode 100644
index 0000000..dba4861
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c	
@@ -0,0 +1,189 @@
+/* pcy_node.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+
+static int node_cmp(const X509_POLICY_NODE **a, const X509_POLICY_NODE **b)
+{
+    return OBJ_cmp((*a)->data->valid_policy, (*b)->data->valid_policy);
+}
+
+STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)
+{
+    return sk_X509_POLICY_NODE_new(node_cmp);
+}
+
+X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *nodes,
+                               const ASN1_OBJECT *id)
+{
+    X509_POLICY_DATA n;
+    X509_POLICY_NODE l;
+    size_t idx;
+
+    n.valid_policy = (ASN1_OBJECT *)id;
+    l.data = &n;
+
+    sk_X509_POLICY_NODE_sort(nodes);
+    if (!sk_X509_POLICY_NODE_find(nodes, &idx, &l))
+        return NULL;
+
+    return sk_X509_POLICY_NODE_value(nodes, idx);
+
+}
+
+X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
+                                  const X509_POLICY_NODE *parent,
+                                  const ASN1_OBJECT *id)
+{
+    X509_POLICY_NODE *node;
+    size_t i;
+    for (i = 0; i < sk_X509_POLICY_NODE_num(level->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(level->nodes, i);
+        if (node->parent == parent) {
+            if (!OBJ_cmp(node->data->valid_policy, id))
+                return node;
+        }
+    }
+    return NULL;
+}
+
+X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
+                                 X509_POLICY_DATA *data,
+                                 X509_POLICY_NODE *parent,
+                                 X509_POLICY_TREE *tree)
+{
+    X509_POLICY_NODE *node;
+    node = OPENSSL_malloc(sizeof(X509_POLICY_NODE));
+    if (!node)
+        return NULL;
+    node->data = data;
+    node->parent = parent;
+    node->nchild = 0;
+    if (level) {
+        if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
+            if (level->anyPolicy)
+                goto node_error;
+            level->anyPolicy = node;
+        } else {
+
+            if (!level->nodes)
+                level->nodes = policy_node_cmp_new();
+            if (!level->nodes)
+                goto node_error;
+            if (!sk_X509_POLICY_NODE_push(level->nodes, node))
+                goto node_error;
+        }
+    }
+
+    if (tree) {
+        if (!tree->extra_data)
+            tree->extra_data = sk_X509_POLICY_DATA_new_null();
+        if (!tree->extra_data)
+            goto node_error;
+        if (!sk_X509_POLICY_DATA_push(tree->extra_data, data))
+            goto node_error;
+    }
+
+    if (parent)
+        parent->nchild++;
+
+    return node;
+
+ node_error:
+    policy_node_free(node);
+    return 0;
+
+}
+
+void policy_node_free(X509_POLICY_NODE *node)
+{
+    OPENSSL_free(node);
+}
+
+/*
+ * See if a policy node matches a policy OID. If mapping enabled look through
+ * expected policy set otherwise just valid policy.
+ */
+
+int policy_node_match(const X509_POLICY_LEVEL *lvl,
+                      const X509_POLICY_NODE *node, const ASN1_OBJECT *oid)
+{
+    size_t i;
+    ASN1_OBJECT *policy_oid;
+    const X509_POLICY_DATA *x = node->data;
+
+    if ((lvl->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(x->flags & POLICY_DATA_FLAG_MAP_MASK)) {
+        if (!OBJ_cmp(x->valid_policy, oid))
+            return 1;
+        return 0;
+    }
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(x->expected_policy_set); i++) {
+        policy_oid = sk_ASN1_OBJECT_value(x->expected_policy_set, i);
+        if (!OBJ_cmp(policy_oid, oid))
+            return 1;
+    }
+    return 0;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c.grpc_back
new file mode 100644
index 0000000..6682282
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_node.c.grpc_back	
@@ -0,0 +1,189 @@
+/* pcy_node.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/asn1.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+
+static int node_cmp(const X509_POLICY_NODE **a, const X509_POLICY_NODE **b)
+{
+    return OBJ_cmp((*a)->data->valid_policy, (*b)->data->valid_policy);
+}
+
+STACK_OF(X509_POLICY_NODE) *policy_node_cmp_new(void)
+{
+    return sk_X509_POLICY_NODE_new(node_cmp);
+}
+
+X509_POLICY_NODE *tree_find_sk(STACK_OF(X509_POLICY_NODE) *nodes,
+                               const ASN1_OBJECT *id)
+{
+    X509_POLICY_DATA n;
+    X509_POLICY_NODE l;
+    size_t idx;
+
+    n.valid_policy = (ASN1_OBJECT *)id;
+    l.data = &n;
+
+    sk_X509_POLICY_NODE_sort(nodes);
+    if (!sk_X509_POLICY_NODE_find(nodes, &idx, &l))
+        return NULL;
+
+    return sk_X509_POLICY_NODE_value(nodes, idx);
+
+}
+
+X509_POLICY_NODE *level_find_node(const X509_POLICY_LEVEL *level,
+                                  const X509_POLICY_NODE *parent,
+                                  const ASN1_OBJECT *id)
+{
+    X509_POLICY_NODE *node;
+    size_t i;
+    for (i = 0; i < sk_X509_POLICY_NODE_num(level->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(level->nodes, i);
+        if (node->parent == parent) {
+            if (!OBJ_cmp(node->data->valid_policy, id))
+                return node;
+        }
+    }
+    return NULL;
+}
+
+X509_POLICY_NODE *level_add_node(X509_POLICY_LEVEL *level,
+                                 X509_POLICY_DATA *data,
+                                 X509_POLICY_NODE *parent,
+                                 X509_POLICY_TREE *tree)
+{
+    X509_POLICY_NODE *node;
+    node = OPENSSL_malloc(sizeof(X509_POLICY_NODE));
+    if (!node)
+        return NULL;
+    node->data = data;
+    node->parent = parent;
+    node->nchild = 0;
+    if (level) {
+        if (OBJ_obj2nid(data->valid_policy) == NID_any_policy) {
+            if (level->anyPolicy)
+                goto node_error;
+            level->anyPolicy = node;
+        } else {
+
+            if (!level->nodes)
+                level->nodes = policy_node_cmp_new();
+            if (!level->nodes)
+                goto node_error;
+            if (!sk_X509_POLICY_NODE_push(level->nodes, node))
+                goto node_error;
+        }
+    }
+
+    if (tree) {
+        if (!tree->extra_data)
+            tree->extra_data = sk_X509_POLICY_DATA_new_null();
+        if (!tree->extra_data)
+            goto node_error;
+        if (!sk_X509_POLICY_DATA_push(tree->extra_data, data))
+            goto node_error;
+    }
+
+    if (parent)
+        parent->nchild++;
+
+    return node;
+
+ node_error:
+    policy_node_free(node);
+    return 0;
+
+}
+
+void policy_node_free(X509_POLICY_NODE *node)
+{
+    OPENSSL_free(node);
+}
+
+/*
+ * See if a policy node matches a policy OID. If mapping enabled look through
+ * expected policy set otherwise just valid policy.
+ */
+
+int policy_node_match(const X509_POLICY_LEVEL *lvl,
+                      const X509_POLICY_NODE *node, const ASN1_OBJECT *oid)
+{
+    size_t i;
+    ASN1_OBJECT *policy_oid;
+    const X509_POLICY_DATA *x = node->data;
+
+    if ((lvl->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(x->flags & POLICY_DATA_FLAG_MAP_MASK)) {
+        if (!OBJ_cmp(x->valid_policy, oid))
+            return 1;
+        return 0;
+    }
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(x->expected_policy_set); i++) {
+        policy_oid = sk_ASN1_OBJECT_value(x->expected_policy_set, i);
+        if (!OBJ_cmp(policy_oid, oid))
+            return 1;
+    }
+    return 0;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c
new file mode 100644
index 0000000..9436172
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c	
@@ -0,0 +1,842 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <string.h>
+
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "pcy_int.h"
+#include "../internal.h"
+
+/*
+ * Enable this to print out the complete policy tree at various point during
+ * evaluation.
+ */
+
+/*
+ * #define OPENSSL_POLICY_DEBUG
+ */
+
+#ifdef OPENSSL_POLICY_DEBUG
+
+static void expected_print(BIO *err, X509_POLICY_LEVEL *lev,
+                           X509_POLICY_NODE *node, int indent)
+{
+    if ((lev->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(node->data->flags & POLICY_DATA_FLAG_MAP_MASK))
+        BIO_puts(err, "  Not Mapped\n");
+    else {
+        int i;
+        STACK_OF(ASN1_OBJECT) *pset = node->data->expected_policy_set;
+        ASN1_OBJECT *oid;
+        BIO_puts(err, "  Expected: ");
+        for (i = 0; i < sk_ASN1_OBJECT_num(pset); i++) {
+            oid = sk_ASN1_OBJECT_value(pset, i);
+            if (i)
+                BIO_puts(err, ", ");
+            i2a_ASN1_OBJECT(err, oid);
+        }
+        BIO_puts(err, "\n");
+    }
+}
+
+static void tree_print(char *str, X509_POLICY_TREE *tree,
+                       X509_POLICY_LEVEL *curr)
+{
+    X509_POLICY_LEVEL *plev;
+    X509_POLICY_NODE *node;
+    int i;
+    BIO *err;
+    err = BIO_new_fp(stderr, BIO_NOCLOSE);
+    if (!curr)
+        curr = tree->levels + tree->nlevel;
+    else
+        curr++;
+    BIO_printf(err, "Level print after %s\n", str);
+    BIO_printf(err, "Printing Up to Level %ld\n", curr - tree->levels);
+    for (plev = tree->levels; plev != curr; plev++) {
+        BIO_printf(err, "Level %ld, flags = %x\n",
+                   plev - tree->levels, plev->flags);
+        for (i = 0; i < sk_X509_POLICY_NODE_num(plev->nodes); i++) {
+            node = sk_X509_POLICY_NODE_value(plev->nodes, i);
+            X509_POLICY_NODE_print(err, node, 2);
+            expected_print(err, plev, node, 2);
+            BIO_printf(err, "  Flags: %x\n", node->data->flags);
+        }
+        if (plev->anyPolicy)
+            X509_POLICY_NODE_print(err, plev->anyPolicy, 2);
+    }
+
+    BIO_free(err);
+
+}
+#else
+
+# define tree_print(a,b,c)      /* */
+
+#endif
+
+/*-
+ * Initialize policy tree. Return values:
+ *  0 Some internal error occurred.
+ * -1 Inconsistent or invalid extensions in certificates.
+ *  1 Tree initialized OK.
+ *  2 Policy tree is empty.
+ *  5 Tree OK and requireExplicitPolicy true.
+ *  6 Tree empty and requireExplicitPolicy true.
+ */
+
+static int tree_init(X509_POLICY_TREE **ptree, STACK_OF(X509) *certs,
+                     unsigned int flags)
+{
+    X509_POLICY_TREE *tree;
+    X509_POLICY_LEVEL *level;
+    const X509_POLICY_CACHE *cache;
+    X509_POLICY_DATA *data = NULL;
+    X509 *x;
+    int ret = 1;
+    int i, n;
+    int explicit_policy;
+    int any_skip;
+    int map_skip;
+    *ptree = NULL;
+    n = sk_X509_num(certs);
+
+#if 0
+    /* Disable policy mapping for now... */
+    flags |= X509_V_FLAG_INHIBIT_MAP;
+#endif
+
+    if (flags & X509_V_FLAG_EXPLICIT_POLICY)
+        explicit_policy = 0;
+    else
+        explicit_policy = n + 1;
+
+    if (flags & X509_V_FLAG_INHIBIT_ANY)
+        any_skip = 0;
+    else
+        any_skip = n + 1;
+
+    if (flags & X509_V_FLAG_INHIBIT_MAP)
+        map_skip = 0;
+    else
+        map_skip = n + 1;
+
+    /* Can't do anything with just a trust anchor */
+    if (n == 1)
+        return 1;
+    /*
+     * First setup policy cache in all certificates apart from the trust
+     * anchor. Note any bad cache results on the way. Also can calculate
+     * explicit_policy value at this point.
+     */
+    for (i = n - 2; i >= 0; i--) {
+        x = sk_X509_value(certs, i);
+        X509_check_purpose(x, -1, -1);
+        cache = policy_cache_set(x);
+        /* If cache NULL something bad happened: return immediately */
+        if (cache == NULL)
+            return 0;
+        /*
+         * If inconsistent extensions keep a note of it but continue
+         */
+        if (x->ex_flags & EXFLAG_INVALID_POLICY)
+            ret = -1;
+        /*
+         * Otherwise if we have no data (hence no CertificatePolicies) and
+         * haven't already set an inconsistent code note it.
+         */
+        else if ((ret == 1) && !cache->data)
+            ret = 2;
+        if (explicit_policy > 0) {
+            if (!(x->ex_flags & EXFLAG_SI))
+                explicit_policy--;
+            if ((cache->explicit_skip != -1)
+                && (cache->explicit_skip < explicit_policy))
+                explicit_policy = cache->explicit_skip;
+        }
+    }
+
+    if (ret != 1) {
+        if (ret == 2 && !explicit_policy)
+            return 6;
+        return ret;
+    }
+
+    /* If we get this far initialize the tree */
+
+    tree = OPENSSL_malloc(sizeof(X509_POLICY_TREE));
+
+    if (!tree)
+        return 0;
+
+    tree->flags = 0;
+    tree->levels = OPENSSL_malloc(sizeof(X509_POLICY_LEVEL) * n);
+    tree->nlevel = 0;
+    tree->extra_data = NULL;
+    tree->auth_policies = NULL;
+    tree->user_policies = NULL;
+
+    if (!tree->levels) {
+        OPENSSL_free(tree);
+        return 0;
+    }
+
+    OPENSSL_memset(tree->levels, 0, n * sizeof(X509_POLICY_LEVEL));
+
+    tree->nlevel = n;
+
+    level = tree->levels;
+
+    /* Root data: initialize to anyPolicy */
+
+    data = policy_data_new(NULL, OBJ_nid2obj(NID_any_policy), 0);
+
+    if (!data || !level_add_node(level, data, NULL, tree))
+        goto bad_tree;
+
+    for (i = n - 2; i >= 0; i--) {
+        level++;
+        x = sk_X509_value(certs, i);
+        cache = policy_cache_set(x);
+        X509_up_ref(x);
+        level->cert = x;
+
+        if (!cache->anyPolicy)
+            level->flags |= X509_V_FLAG_INHIBIT_ANY;
+
+        /* Determine inhibit any and inhibit map flags */
+        if (any_skip == 0) {
+            /*
+             * Any matching allowed if certificate is self issued and not the
+             * last in the chain.
+             */
+            if (!(x->ex_flags & EXFLAG_SI) || (i == 0))
+                level->flags |= X509_V_FLAG_INHIBIT_ANY;
+        } else {
+            if (!(x->ex_flags & EXFLAG_SI))
+                any_skip--;
+            if ((cache->any_skip >= 0)
+                && (cache->any_skip < any_skip))
+                any_skip = cache->any_skip;
+        }
+
+        if (map_skip == 0)
+            level->flags |= X509_V_FLAG_INHIBIT_MAP;
+        else {
+            if (!(x->ex_flags & EXFLAG_SI))
+                map_skip--;
+            if ((cache->map_skip >= 0)
+                && (cache->map_skip < map_skip))
+                map_skip = cache->map_skip;
+        }
+
+    }
+
+    *ptree = tree;
+
+    if (explicit_policy)
+        return 1;
+    else
+        return 5;
+
+ bad_tree:
+
+    X509_policy_tree_free(tree);
+
+    return 0;
+
+}
+
+static int tree_link_matching_nodes(X509_POLICY_LEVEL *curr,
+                                    X509_POLICY_DATA *data)
+{
+    X509_POLICY_LEVEL *last = curr - 1;
+    X509_POLICY_NODE *node;
+    int matched = 0;
+    size_t i;
+    /* Iterate through all in nodes linking matches */
+    for (i = 0; i < sk_X509_POLICY_NODE_num(last->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(last->nodes, i);
+        if (policy_node_match(last, node, data->valid_policy)) {
+            if (!level_add_node(curr, data, node, NULL))
+                return 0;
+            matched = 1;
+        }
+    }
+    if (!matched && last->anyPolicy) {
+        if (!level_add_node(curr, data, last->anyPolicy, NULL))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * This corresponds to RFC3280 6.1.3(d)(1): link any data from
+ * CertificatePolicies onto matching parent or anyPolicy if no match.
+ */
+
+static int tree_link_nodes(X509_POLICY_LEVEL *curr,
+                           const X509_POLICY_CACHE *cache)
+{
+    size_t i;
+    X509_POLICY_DATA *data;
+
+    for (i = 0; i < sk_X509_POLICY_DATA_num(cache->data); i++) {
+        data = sk_X509_POLICY_DATA_value(cache->data, i);
+        /*
+         * If a node is mapped any it doesn't have a corresponding
+         * CertificatePolicies entry. However such an identical node would
+         * be created if anyPolicy matching is enabled because there would be
+         * no match with the parent valid_policy_set. So we create link
+         * because then it will have the mapping flags right and we can prune
+         * it later.
+         */
+#if 0
+        if ((data->flags & POLICY_DATA_FLAG_MAPPED_ANY)
+            && !(curr->flags & X509_V_FLAG_INHIBIT_ANY))
+            continue;
+#endif
+        /* Look for matching nodes in previous level */
+        if (!tree_link_matching_nodes(curr, data))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * This corresponds to RFC3280 6.1.3(d)(2): Create new data for any unmatched
+ * policies in the parent and link to anyPolicy.
+ */
+
+static int tree_add_unmatched(X509_POLICY_LEVEL *curr,
+                              const X509_POLICY_CACHE *cache,
+                              const ASN1_OBJECT *id,
+                              X509_POLICY_NODE *node, X509_POLICY_TREE *tree)
+{
+    X509_POLICY_DATA *data;
+    if (id == NULL)
+        id = node->data->valid_policy;
+    /*
+     * Create a new node with qualifiers from anyPolicy and id from unmatched
+     * node.
+     */
+    data = policy_data_new(NULL, id, node_critical(node));
+
+    if (data == NULL)
+        return 0;
+    /* Curr may not have anyPolicy */
+    data->qualifier_set = cache->anyPolicy->qualifier_set;
+    data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+    if (!level_add_node(curr, data, node, tree)) {
+        policy_data_free(data);
+        return 0;
+    }
+
+    return 1;
+}
+
+static int tree_link_unmatched(X509_POLICY_LEVEL *curr,
+                               const X509_POLICY_CACHE *cache,
+                               X509_POLICY_NODE *node, X509_POLICY_TREE *tree)
+{
+    const X509_POLICY_LEVEL *last = curr - 1;
+    size_t i;
+
+    if ((last->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(node->data->flags & POLICY_DATA_FLAG_MAPPED)) {
+        /* If no policy mapping: matched if one child present */
+        if (node->nchild)
+            return 1;
+        if (!tree_add_unmatched(curr, cache, NULL, node, tree))
+            return 0;
+        /* Add it */
+    } else {
+        /* If mapping: matched if one child per expected policy set */
+        STACK_OF(ASN1_OBJECT) *expset = node->data->expected_policy_set;
+        if ((size_t)node->nchild == sk_ASN1_OBJECT_num(expset))
+            return 1;
+        /* Locate unmatched nodes */
+        for (i = 0; i < sk_ASN1_OBJECT_num(expset); i++) {
+            ASN1_OBJECT *oid = sk_ASN1_OBJECT_value(expset, i);
+            if (level_find_node(curr, node, oid))
+                continue;
+            if (!tree_add_unmatched(curr, cache, oid, node, tree))
+                return 0;
+        }
+
+    }
+
+    return 1;
+
+}
+
+static int tree_link_any(X509_POLICY_LEVEL *curr,
+                         const X509_POLICY_CACHE *cache,
+                         X509_POLICY_TREE *tree)
+{
+    size_t i;
+    /*
+     * X509_POLICY_DATA *data;
+     */
+    X509_POLICY_NODE *node;
+    X509_POLICY_LEVEL *last = curr - 1;
+
+    for (i = 0; i < sk_X509_POLICY_NODE_num(last->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(last->nodes, i);
+
+        if (!tree_link_unmatched(curr, cache, node, tree))
+            return 0;
+
+#if 0
+
+        /*
+         * Skip any node with any children: we only want unmathced nodes.
+         * Note: need something better for policy mapping because each node
+         * may have multiple children
+         */
+        if (node->nchild)
+            continue;
+
+        /*
+         * Create a new node with qualifiers from anyPolicy and id from
+         * unmatched node.
+         */
+        data = policy_data_new(NULL, node->data->valid_policy,
+                               node_critical(node));
+
+        if (data == NULL)
+            return 0;
+        /* Curr may not have anyPolicy */
+        data->qualifier_set = cache->anyPolicy->qualifier_set;
+        data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+        if (!level_add_node(curr, data, node, tree)) {
+            policy_data_free(data);
+            return 0;
+        }
+#endif
+
+    }
+    /* Finally add link to anyPolicy */
+    if (last->anyPolicy) {
+        if (!level_add_node(curr, cache->anyPolicy, last->anyPolicy, NULL))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * Prune the tree: delete any child mapped child data on the current level
+ * then proceed up the tree deleting any data with no children. If we ever
+ * have no data on a level we can halt because the tree will be empty.
+ */
+
+static int tree_prune(X509_POLICY_TREE *tree, X509_POLICY_LEVEL *curr)
+{
+    STACK_OF(X509_POLICY_NODE) *nodes;
+    X509_POLICY_NODE *node;
+    int i;
+    nodes = curr->nodes;
+    if (curr->flags & X509_V_FLAG_INHIBIT_MAP) {
+        for (i = sk_X509_POLICY_NODE_num(nodes) - 1; i >= 0; i--) {
+            node = sk_X509_POLICY_NODE_value(nodes, i);
+            /* Delete any mapped data: see RFC3280 XXXX */
+            if (node->data->flags & POLICY_DATA_FLAG_MAP_MASK) {
+                node->parent->nchild--;
+                OPENSSL_free(node);
+                (void)sk_X509_POLICY_NODE_delete(nodes, i);
+            }
+        }
+    }
+
+    for (;;) {
+        --curr;
+        nodes = curr->nodes;
+        for (i = sk_X509_POLICY_NODE_num(nodes) - 1; i >= 0; i--) {
+            node = sk_X509_POLICY_NODE_value(nodes, i);
+            if (node->nchild == 0) {
+                node->parent->nchild--;
+                OPENSSL_free(node);
+                (void)sk_X509_POLICY_NODE_delete(nodes, i);
+            }
+        }
+        if (curr->anyPolicy && !curr->anyPolicy->nchild) {
+            if (curr->anyPolicy->parent)
+                curr->anyPolicy->parent->nchild--;
+            OPENSSL_free(curr->anyPolicy);
+            curr->anyPolicy = NULL;
+        }
+        if (curr == tree->levels) {
+            /* If we zapped anyPolicy at top then tree is empty */
+            if (!curr->anyPolicy)
+                return 2;
+            return 1;
+        }
+    }
+
+}
+
+static int tree_add_auth_node(STACK_OF(X509_POLICY_NODE) **pnodes,
+                              X509_POLICY_NODE *pcy)
+{
+    if (!*pnodes) {
+        *pnodes = policy_node_cmp_new();
+        if (!*pnodes)
+            return 0;
+    } else {
+      sk_X509_POLICY_NODE_sort(*pnodes);
+      if (sk_X509_POLICY_NODE_find(*pnodes, NULL, pcy))
+        return 1;
+    }
+    if (!sk_X509_POLICY_NODE_push(*pnodes, pcy))
+        return 0;
+
+    return 1;
+
+}
+
+/*
+ * Calculate the authority set based on policy tree. The 'pnodes' parameter
+ * is used as a store for the set of policy nodes used to calculate the user
+ * set. If the authority set is not anyPolicy then pnodes will just point to
+ * the authority set. If however the authority set is anyPolicy then the set
+ * of valid policies (other than anyPolicy) is store in pnodes. The return
+ * value of '2' is used in this case to indicate that pnodes should be freed.
+ */
+
+static int tree_calculate_authority_set(X509_POLICY_TREE *tree,
+                                        STACK_OF(X509_POLICY_NODE) **pnodes)
+{
+    X509_POLICY_LEVEL *curr;
+    X509_POLICY_NODE *node, *anyptr;
+    STACK_OF(X509_POLICY_NODE) **addnodes;
+    int i;
+    size_t j;
+    curr = tree->levels + tree->nlevel - 1;
+
+    /* If last level contains anyPolicy set is anyPolicy */
+    if (curr->anyPolicy) {
+        if (!tree_add_auth_node(&tree->auth_policies, curr->anyPolicy))
+            return 0;
+        addnodes = pnodes;
+    } else
+        /* Add policies to authority set */
+        addnodes = &tree->auth_policies;
+
+    curr = tree->levels;
+    for (i = 1; i < tree->nlevel; i++) {
+        /*
+         * If no anyPolicy node on this this level it can't appear on lower
+         * levels so end search.
+         */
+        if (!(anyptr = curr->anyPolicy))
+            break;
+        curr++;
+        for (j = 0; j < sk_X509_POLICY_NODE_num(curr->nodes); j++) {
+            node = sk_X509_POLICY_NODE_value(curr->nodes, j);
+            if ((node->parent == anyptr)
+                && !tree_add_auth_node(addnodes, node))
+                return 0;
+        }
+    }
+
+    if (addnodes == pnodes)
+        return 2;
+
+    *pnodes = tree->auth_policies;
+
+    return 1;
+}
+
+static int tree_calculate_user_set(X509_POLICY_TREE *tree,
+                                   STACK_OF(ASN1_OBJECT) *policy_oids,
+                                   STACK_OF(X509_POLICY_NODE) *auth_nodes)
+{
+    size_t i;
+    X509_POLICY_NODE *node;
+    ASN1_OBJECT *oid;
+
+    X509_POLICY_NODE *anyPolicy;
+    X509_POLICY_DATA *extra;
+
+    /*
+     * Check if anyPolicy present in authority constrained policy set: this
+     * will happen if it is a leaf node.
+     */
+
+    if (sk_ASN1_OBJECT_num(policy_oids) <= 0)
+        return 1;
+
+    anyPolicy = tree->levels[tree->nlevel - 1].anyPolicy;
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policy_oids); i++) {
+        oid = sk_ASN1_OBJECT_value(policy_oids, i);
+        if (OBJ_obj2nid(oid) == NID_any_policy) {
+            tree->flags |= POLICY_FLAG_ANY_POLICY;
+            return 1;
+        }
+    }
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policy_oids); i++) {
+        oid = sk_ASN1_OBJECT_value(policy_oids, i);
+        node = tree_find_sk(auth_nodes, oid);
+        if (!node) {
+            if (!anyPolicy)
+                continue;
+            /*
+             * Create a new node with policy ID from user set and qualifiers
+             * from anyPolicy.
+             */
+            extra = policy_data_new(NULL, oid, node_critical(anyPolicy));
+            if (!extra)
+                return 0;
+            extra->qualifier_set = anyPolicy->data->qualifier_set;
+            extra->flags = POLICY_DATA_FLAG_SHARED_QUALIFIERS
+                | POLICY_DATA_FLAG_EXTRA_NODE;
+            node = level_add_node(NULL, extra, anyPolicy->parent, tree);
+        }
+        if (!tree->user_policies) {
+            tree->user_policies = sk_X509_POLICY_NODE_new_null();
+            if (!tree->user_policies)
+                return 1;
+        }
+        if (!sk_X509_POLICY_NODE_push(tree->user_policies, node))
+            return 0;
+    }
+    return 1;
+
+}
+
+static int tree_evaluate(X509_POLICY_TREE *tree)
+{
+    int ret, i;
+    X509_POLICY_LEVEL *curr = tree->levels + 1;
+    const X509_POLICY_CACHE *cache;
+
+    for (i = 1; i < tree->nlevel; i++, curr++) {
+        cache = policy_cache_set(curr->cert);
+        if (!tree_link_nodes(curr, cache))
+            return 0;
+
+        if (!(curr->flags & X509_V_FLAG_INHIBIT_ANY)
+            && !tree_link_any(curr, cache, tree))
+            return 0;
+        tree_print("before tree_prune()", tree, curr);
+        ret = tree_prune(tree, curr);
+        if (ret != 1)
+            return ret;
+    }
+
+    return 1;
+
+}
+
+static void exnode_free(X509_POLICY_NODE *node)
+{
+    if (node->data && (node->data->flags & POLICY_DATA_FLAG_EXTRA_NODE))
+        OPENSSL_free(node);
+}
+
+void X509_policy_tree_free(X509_POLICY_TREE *tree)
+{
+    X509_POLICY_LEVEL *curr;
+    int i;
+
+    if (!tree)
+        return;
+
+    sk_X509_POLICY_NODE_free(tree->auth_policies);
+    sk_X509_POLICY_NODE_pop_free(tree->user_policies, exnode_free);
+
+    for (i = 0, curr = tree->levels; i < tree->nlevel; i++, curr++) {
+        if (curr->cert)
+            X509_free(curr->cert);
+        if (curr->nodes)
+            sk_X509_POLICY_NODE_pop_free(curr->nodes, policy_node_free);
+        if (curr->anyPolicy)
+            policy_node_free(curr->anyPolicy);
+    }
+
+    if (tree->extra_data)
+        sk_X509_POLICY_DATA_pop_free(tree->extra_data, policy_data_free);
+
+    OPENSSL_free(tree->levels);
+    OPENSSL_free(tree);
+
+}
+
+/*-
+ * Application policy checking function.
+ * Return codes:
+ *  0   Internal Error.
+ *  1   Successful.
+ * -1   One or more certificates contain invalid or inconsistent extensions
+ * -2   User constrained policy set empty and requireExplicit true.
+ */
+
+int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
+                      STACK_OF(X509) *certs,
+                      STACK_OF(ASN1_OBJECT) *policy_oids, unsigned int flags)
+{
+    int ret;
+    int calc_ret;
+    X509_POLICY_TREE *tree = NULL;
+    STACK_OF(X509_POLICY_NODE) *nodes, *auth_nodes = NULL;
+    *ptree = NULL;
+
+    *pexplicit_policy = 0;
+    ret = tree_init(&tree, certs, flags);
+
+    switch (ret) {
+
+        /* Tree empty requireExplicit False: OK */
+    case 2:
+        return 1;
+
+        /* Some internal error */
+    case -1:
+        return -1;
+
+        /* Some internal error */
+    case 0:
+        return 0;
+
+        /* Tree empty requireExplicit True: Error */
+
+    case 6:
+        *pexplicit_policy = 1;
+        return -2;
+
+        /* Tree OK requireExplicit True: OK and continue */
+    case 5:
+        *pexplicit_policy = 1;
+        break;
+
+        /* Tree OK: continue */
+
+    case 1:
+        if (!tree)
+            /*
+             * tree_init() returns success and a null tree
+             * if it's just looking at a trust anchor.
+             * I'm not sure that returning success here is
+             * correct, but I'm sure that reporting this
+             * as an internal error which our caller
+             * interprets as a malloc failure is wrong.
+             */
+            return 1;
+        break;
+    }
+
+    if (!tree)
+        goto error;
+    ret = tree_evaluate(tree);
+
+    tree_print("tree_evaluate()", tree, NULL);
+
+    if (ret <= 0)
+        goto error;
+
+    /* Return value 2 means tree empty */
+    if (ret == 2) {
+        X509_policy_tree_free(tree);
+        if (*pexplicit_policy)
+            return -2;
+        else
+            return 1;
+    }
+
+    /* Tree is not empty: continue */
+
+    calc_ret = tree_calculate_authority_set(tree, &auth_nodes);
+
+    if (!calc_ret)
+        goto error;
+
+    ret = tree_calculate_user_set(tree, policy_oids, auth_nodes);
+
+    if (calc_ret == 2)
+        sk_X509_POLICY_NODE_free(auth_nodes);
+
+    if (!ret)
+        goto error;
+
+
+    if (tree)
+        *ptree = tree;
+
+    if (*pexplicit_policy) {
+        nodes = X509_policy_tree_get0_user_policies(tree);
+        if (sk_X509_POLICY_NODE_num(nodes) <= 0)
+            return -2;
+    }
+
+    return 1;
+
+ error:
+
+    X509_policy_tree_free(tree);
+
+    return 0;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c.grpc_back
new file mode 100644
index 0000000..136b45f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/pcy_tree.c.grpc_back	
@@ -0,0 +1,842 @@
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2004.
+ */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <string.h>
+
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "pcy_int.h"
+#include "../internal.h"
+
+/*
+ * Enable this to print out the complete policy tree at various point during
+ * evaluation.
+ */
+
+/*
+ * #define OPENSSL_POLICY_DEBUG
+ */
+
+#ifdef OPENSSL_POLICY_DEBUG
+
+static void expected_print(BIO *err, X509_POLICY_LEVEL *lev,
+                           X509_POLICY_NODE *node, int indent)
+{
+    if ((lev->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(node->data->flags & POLICY_DATA_FLAG_MAP_MASK))
+        BIO_puts(err, "  Not Mapped\n");
+    else {
+        int i;
+        STACK_OF(ASN1_OBJECT) *pset = node->data->expected_policy_set;
+        ASN1_OBJECT *oid;
+        BIO_puts(err, "  Expected: ");
+        for (i = 0; i < sk_ASN1_OBJECT_num(pset); i++) {
+            oid = sk_ASN1_OBJECT_value(pset, i);
+            if (i)
+                BIO_puts(err, ", ");
+            i2a_ASN1_OBJECT(err, oid);
+        }
+        BIO_puts(err, "\n");
+    }
+}
+
+static void tree_print(char *str, X509_POLICY_TREE *tree,
+                       X509_POLICY_LEVEL *curr)
+{
+    X509_POLICY_LEVEL *plev;
+    X509_POLICY_NODE *node;
+    int i;
+    BIO *err;
+    err = BIO_new_fp(stderr, BIO_NOCLOSE);
+    if (!curr)
+        curr = tree->levels + tree->nlevel;
+    else
+        curr++;
+    BIO_printf(err, "Level print after %s\n", str);
+    BIO_printf(err, "Printing Up to Level %ld\n", curr - tree->levels);
+    for (plev = tree->levels; plev != curr; plev++) {
+        BIO_printf(err, "Level %ld, flags = %x\n",
+                   plev - tree->levels, plev->flags);
+        for (i = 0; i < sk_X509_POLICY_NODE_num(plev->nodes); i++) {
+            node = sk_X509_POLICY_NODE_value(plev->nodes, i);
+            X509_POLICY_NODE_print(err, node, 2);
+            expected_print(err, plev, node, 2);
+            BIO_printf(err, "  Flags: %x\n", node->data->flags);
+        }
+        if (plev->anyPolicy)
+            X509_POLICY_NODE_print(err, plev->anyPolicy, 2);
+    }
+
+    BIO_free(err);
+
+}
+#else
+
+# define tree_print(a,b,c)      /* */
+
+#endif
+
+/*-
+ * Initialize policy tree. Return values:
+ *  0 Some internal error occurred.
+ * -1 Inconsistent or invalid extensions in certificates.
+ *  1 Tree initialized OK.
+ *  2 Policy tree is empty.
+ *  5 Tree OK and requireExplicitPolicy true.
+ *  6 Tree empty and requireExplicitPolicy true.
+ */
+
+static int tree_init(X509_POLICY_TREE **ptree, STACK_OF(X509) *certs,
+                     unsigned int flags)
+{
+    X509_POLICY_TREE *tree;
+    X509_POLICY_LEVEL *level;
+    const X509_POLICY_CACHE *cache;
+    X509_POLICY_DATA *data = NULL;
+    X509 *x;
+    int ret = 1;
+    int i, n;
+    int explicit_policy;
+    int any_skip;
+    int map_skip;
+    *ptree = NULL;
+    n = sk_X509_num(certs);
+
+#if 0
+    /* Disable policy mapping for now... */
+    flags |= X509_V_FLAG_INHIBIT_MAP;
+#endif
+
+    if (flags & X509_V_FLAG_EXPLICIT_POLICY)
+        explicit_policy = 0;
+    else
+        explicit_policy = n + 1;
+
+    if (flags & X509_V_FLAG_INHIBIT_ANY)
+        any_skip = 0;
+    else
+        any_skip = n + 1;
+
+    if (flags & X509_V_FLAG_INHIBIT_MAP)
+        map_skip = 0;
+    else
+        map_skip = n + 1;
+
+    /* Can't do anything with just a trust anchor */
+    if (n == 1)
+        return 1;
+    /*
+     * First setup policy cache in all certificates apart from the trust
+     * anchor. Note any bad cache results on the way. Also can calculate
+     * explicit_policy value at this point.
+     */
+    for (i = n - 2; i >= 0; i--) {
+        x = sk_X509_value(certs, i);
+        X509_check_purpose(x, -1, -1);
+        cache = policy_cache_set(x);
+        /* If cache NULL something bad happened: return immediately */
+        if (cache == NULL)
+            return 0;
+        /*
+         * If inconsistent extensions keep a note of it but continue
+         */
+        if (x->ex_flags & EXFLAG_INVALID_POLICY)
+            ret = -1;
+        /*
+         * Otherwise if we have no data (hence no CertificatePolicies) and
+         * haven't already set an inconsistent code note it.
+         */
+        else if ((ret == 1) && !cache->data)
+            ret = 2;
+        if (explicit_policy > 0) {
+            if (!(x->ex_flags & EXFLAG_SI))
+                explicit_policy--;
+            if ((cache->explicit_skip != -1)
+                && (cache->explicit_skip < explicit_policy))
+                explicit_policy = cache->explicit_skip;
+        }
+    }
+
+    if (ret != 1) {
+        if (ret == 2 && !explicit_policy)
+            return 6;
+        return ret;
+    }
+
+    /* If we get this far initialize the tree */
+
+    tree = OPENSSL_malloc(sizeof(X509_POLICY_TREE));
+
+    if (!tree)
+        return 0;
+
+    tree->flags = 0;
+    tree->levels = OPENSSL_malloc(sizeof(X509_POLICY_LEVEL) * n);
+    tree->nlevel = 0;
+    tree->extra_data = NULL;
+    tree->auth_policies = NULL;
+    tree->user_policies = NULL;
+
+    if (!tree->levels) {
+        OPENSSL_free(tree);
+        return 0;
+    }
+
+    OPENSSL_memset(tree->levels, 0, n * sizeof(X509_POLICY_LEVEL));
+
+    tree->nlevel = n;
+
+    level = tree->levels;
+
+    /* Root data: initialize to anyPolicy */
+
+    data = policy_data_new(NULL, OBJ_nid2obj(NID_any_policy), 0);
+
+    if (!data || !level_add_node(level, data, NULL, tree))
+        goto bad_tree;
+
+    for (i = n - 2; i >= 0; i--) {
+        level++;
+        x = sk_X509_value(certs, i);
+        cache = policy_cache_set(x);
+        X509_up_ref(x);
+        level->cert = x;
+
+        if (!cache->anyPolicy)
+            level->flags |= X509_V_FLAG_INHIBIT_ANY;
+
+        /* Determine inhibit any and inhibit map flags */
+        if (any_skip == 0) {
+            /*
+             * Any matching allowed if certificate is self issued and not the
+             * last in the chain.
+             */
+            if (!(x->ex_flags & EXFLAG_SI) || (i == 0))
+                level->flags |= X509_V_FLAG_INHIBIT_ANY;
+        } else {
+            if (!(x->ex_flags & EXFLAG_SI))
+                any_skip--;
+            if ((cache->any_skip >= 0)
+                && (cache->any_skip < any_skip))
+                any_skip = cache->any_skip;
+        }
+
+        if (map_skip == 0)
+            level->flags |= X509_V_FLAG_INHIBIT_MAP;
+        else {
+            if (!(x->ex_flags & EXFLAG_SI))
+                map_skip--;
+            if ((cache->map_skip >= 0)
+                && (cache->map_skip < map_skip))
+                map_skip = cache->map_skip;
+        }
+
+    }
+
+    *ptree = tree;
+
+    if (explicit_policy)
+        return 1;
+    else
+        return 5;
+
+ bad_tree:
+
+    X509_policy_tree_free(tree);
+
+    return 0;
+
+}
+
+static int tree_link_matching_nodes(X509_POLICY_LEVEL *curr,
+                                    X509_POLICY_DATA *data)
+{
+    X509_POLICY_LEVEL *last = curr - 1;
+    X509_POLICY_NODE *node;
+    int matched = 0;
+    size_t i;
+    /* Iterate through all in nodes linking matches */
+    for (i = 0; i < sk_X509_POLICY_NODE_num(last->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(last->nodes, i);
+        if (policy_node_match(last, node, data->valid_policy)) {
+            if (!level_add_node(curr, data, node, NULL))
+                return 0;
+            matched = 1;
+        }
+    }
+    if (!matched && last->anyPolicy) {
+        if (!level_add_node(curr, data, last->anyPolicy, NULL))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * This corresponds to RFC3280 6.1.3(d)(1): link any data from
+ * CertificatePolicies onto matching parent or anyPolicy if no match.
+ */
+
+static int tree_link_nodes(X509_POLICY_LEVEL *curr,
+                           const X509_POLICY_CACHE *cache)
+{
+    size_t i;
+    X509_POLICY_DATA *data;
+
+    for (i = 0; i < sk_X509_POLICY_DATA_num(cache->data); i++) {
+        data = sk_X509_POLICY_DATA_value(cache->data, i);
+        /*
+         * If a node is mapped any it doesn't have a corresponding
+         * CertificatePolicies entry. However such an identical node would
+         * be created if anyPolicy matching is enabled because there would be
+         * no match with the parent valid_policy_set. So we create link
+         * because then it will have the mapping flags right and we can prune
+         * it later.
+         */
+#if 0
+        if ((data->flags & POLICY_DATA_FLAG_MAPPED_ANY)
+            && !(curr->flags & X509_V_FLAG_INHIBIT_ANY))
+            continue;
+#endif
+        /* Look for matching nodes in previous level */
+        if (!tree_link_matching_nodes(curr, data))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * This corresponds to RFC3280 6.1.3(d)(2): Create new data for any unmatched
+ * policies in the parent and link to anyPolicy.
+ */
+
+static int tree_add_unmatched(X509_POLICY_LEVEL *curr,
+                              const X509_POLICY_CACHE *cache,
+                              const ASN1_OBJECT *id,
+                              X509_POLICY_NODE *node, X509_POLICY_TREE *tree)
+{
+    X509_POLICY_DATA *data;
+    if (id == NULL)
+        id = node->data->valid_policy;
+    /*
+     * Create a new node with qualifiers from anyPolicy and id from unmatched
+     * node.
+     */
+    data = policy_data_new(NULL, id, node_critical(node));
+
+    if (data == NULL)
+        return 0;
+    /* Curr may not have anyPolicy */
+    data->qualifier_set = cache->anyPolicy->qualifier_set;
+    data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+    if (!level_add_node(curr, data, node, tree)) {
+        policy_data_free(data);
+        return 0;
+    }
+
+    return 1;
+}
+
+static int tree_link_unmatched(X509_POLICY_LEVEL *curr,
+                               const X509_POLICY_CACHE *cache,
+                               X509_POLICY_NODE *node, X509_POLICY_TREE *tree)
+{
+    const X509_POLICY_LEVEL *last = curr - 1;
+    size_t i;
+
+    if ((last->flags & X509_V_FLAG_INHIBIT_MAP)
+        || !(node->data->flags & POLICY_DATA_FLAG_MAPPED)) {
+        /* If no policy mapping: matched if one child present */
+        if (node->nchild)
+            return 1;
+        if (!tree_add_unmatched(curr, cache, NULL, node, tree))
+            return 0;
+        /* Add it */
+    } else {
+        /* If mapping: matched if one child per expected policy set */
+        STACK_OF(ASN1_OBJECT) *expset = node->data->expected_policy_set;
+        if ((size_t)node->nchild == sk_ASN1_OBJECT_num(expset))
+            return 1;
+        /* Locate unmatched nodes */
+        for (i = 0; i < sk_ASN1_OBJECT_num(expset); i++) {
+            ASN1_OBJECT *oid = sk_ASN1_OBJECT_value(expset, i);
+            if (level_find_node(curr, node, oid))
+                continue;
+            if (!tree_add_unmatched(curr, cache, oid, node, tree))
+                return 0;
+        }
+
+    }
+
+    return 1;
+
+}
+
+static int tree_link_any(X509_POLICY_LEVEL *curr,
+                         const X509_POLICY_CACHE *cache,
+                         X509_POLICY_TREE *tree)
+{
+    size_t i;
+    /*
+     * X509_POLICY_DATA *data;
+     */
+    X509_POLICY_NODE *node;
+    X509_POLICY_LEVEL *last = curr - 1;
+
+    for (i = 0; i < sk_X509_POLICY_NODE_num(last->nodes); i++) {
+        node = sk_X509_POLICY_NODE_value(last->nodes, i);
+
+        if (!tree_link_unmatched(curr, cache, node, tree))
+            return 0;
+
+#if 0
+
+        /*
+         * Skip any node with any children: we only want unmathced nodes.
+         * Note: need something better for policy mapping because each node
+         * may have multiple children
+         */
+        if (node->nchild)
+            continue;
+
+        /*
+         * Create a new node with qualifiers from anyPolicy and id from
+         * unmatched node.
+         */
+        data = policy_data_new(NULL, node->data->valid_policy,
+                               node_critical(node));
+
+        if (data == NULL)
+            return 0;
+        /* Curr may not have anyPolicy */
+        data->qualifier_set = cache->anyPolicy->qualifier_set;
+        data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
+        if (!level_add_node(curr, data, node, tree)) {
+            policy_data_free(data);
+            return 0;
+        }
+#endif
+
+    }
+    /* Finally add link to anyPolicy */
+    if (last->anyPolicy) {
+        if (!level_add_node(curr, cache->anyPolicy, last->anyPolicy, NULL))
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * Prune the tree: delete any child mapped child data on the current level
+ * then proceed up the tree deleting any data with no children. If we ever
+ * have no data on a level we can halt because the tree will be empty.
+ */
+
+static int tree_prune(X509_POLICY_TREE *tree, X509_POLICY_LEVEL *curr)
+{
+    STACK_OF(X509_POLICY_NODE) *nodes;
+    X509_POLICY_NODE *node;
+    int i;
+    nodes = curr->nodes;
+    if (curr->flags & X509_V_FLAG_INHIBIT_MAP) {
+        for (i = sk_X509_POLICY_NODE_num(nodes) - 1; i >= 0; i--) {
+            node = sk_X509_POLICY_NODE_value(nodes, i);
+            /* Delete any mapped data: see RFC3280 XXXX */
+            if (node->data->flags & POLICY_DATA_FLAG_MAP_MASK) {
+                node->parent->nchild--;
+                OPENSSL_free(node);
+                (void)sk_X509_POLICY_NODE_delete(nodes, i);
+            }
+        }
+    }
+
+    for (;;) {
+        --curr;
+        nodes = curr->nodes;
+        for (i = sk_X509_POLICY_NODE_num(nodes) - 1; i >= 0; i--) {
+            node = sk_X509_POLICY_NODE_value(nodes, i);
+            if (node->nchild == 0) {
+                node->parent->nchild--;
+                OPENSSL_free(node);
+                (void)sk_X509_POLICY_NODE_delete(nodes, i);
+            }
+        }
+        if (curr->anyPolicy && !curr->anyPolicy->nchild) {
+            if (curr->anyPolicy->parent)
+                curr->anyPolicy->parent->nchild--;
+            OPENSSL_free(curr->anyPolicy);
+            curr->anyPolicy = NULL;
+        }
+        if (curr == tree->levels) {
+            /* If we zapped anyPolicy at top then tree is empty */
+            if (!curr->anyPolicy)
+                return 2;
+            return 1;
+        }
+    }
+
+}
+
+static int tree_add_auth_node(STACK_OF(X509_POLICY_NODE) **pnodes,
+                              X509_POLICY_NODE *pcy)
+{
+    if (!*pnodes) {
+        *pnodes = policy_node_cmp_new();
+        if (!*pnodes)
+            return 0;
+    } else {
+      sk_X509_POLICY_NODE_sort(*pnodes);
+      if (sk_X509_POLICY_NODE_find(*pnodes, NULL, pcy))
+        return 1;
+    }
+    if (!sk_X509_POLICY_NODE_push(*pnodes, pcy))
+        return 0;
+
+    return 1;
+
+}
+
+/*
+ * Calculate the authority set based on policy tree. The 'pnodes' parameter
+ * is used as a store for the set of policy nodes used to calculate the user
+ * set. If the authority set is not anyPolicy then pnodes will just point to
+ * the authority set. If however the authority set is anyPolicy then the set
+ * of valid policies (other than anyPolicy) is store in pnodes. The return
+ * value of '2' is used in this case to indicate that pnodes should be freed.
+ */
+
+static int tree_calculate_authority_set(X509_POLICY_TREE *tree,
+                                        STACK_OF(X509_POLICY_NODE) **pnodes)
+{
+    X509_POLICY_LEVEL *curr;
+    X509_POLICY_NODE *node, *anyptr;
+    STACK_OF(X509_POLICY_NODE) **addnodes;
+    int i;
+    size_t j;
+    curr = tree->levels + tree->nlevel - 1;
+
+    /* If last level contains anyPolicy set is anyPolicy */
+    if (curr->anyPolicy) {
+        if (!tree_add_auth_node(&tree->auth_policies, curr->anyPolicy))
+            return 0;
+        addnodes = pnodes;
+    } else
+        /* Add policies to authority set */
+        addnodes = &tree->auth_policies;
+
+    curr = tree->levels;
+    for (i = 1; i < tree->nlevel; i++) {
+        /*
+         * If no anyPolicy node on this this level it can't appear on lower
+         * levels so end search.
+         */
+        if (!(anyptr = curr->anyPolicy))
+            break;
+        curr++;
+        for (j = 0; j < sk_X509_POLICY_NODE_num(curr->nodes); j++) {
+            node = sk_X509_POLICY_NODE_value(curr->nodes, j);
+            if ((node->parent == anyptr)
+                && !tree_add_auth_node(addnodes, node))
+                return 0;
+        }
+    }
+
+    if (addnodes == pnodes)
+        return 2;
+
+    *pnodes = tree->auth_policies;
+
+    return 1;
+}
+
+static int tree_calculate_user_set(X509_POLICY_TREE *tree,
+                                   STACK_OF(ASN1_OBJECT) *policy_oids,
+                                   STACK_OF(X509_POLICY_NODE) *auth_nodes)
+{
+    size_t i;
+    X509_POLICY_NODE *node;
+    ASN1_OBJECT *oid;
+
+    X509_POLICY_NODE *anyPolicy;
+    X509_POLICY_DATA *extra;
+
+    /*
+     * Check if anyPolicy present in authority constrained policy set: this
+     * will happen if it is a leaf node.
+     */
+
+    if (sk_ASN1_OBJECT_num(policy_oids) <= 0)
+        return 1;
+
+    anyPolicy = tree->levels[tree->nlevel - 1].anyPolicy;
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policy_oids); i++) {
+        oid = sk_ASN1_OBJECT_value(policy_oids, i);
+        if (OBJ_obj2nid(oid) == NID_any_policy) {
+            tree->flags |= POLICY_FLAG_ANY_POLICY;
+            return 1;
+        }
+    }
+
+    for (i = 0; i < sk_ASN1_OBJECT_num(policy_oids); i++) {
+        oid = sk_ASN1_OBJECT_value(policy_oids, i);
+        node = tree_find_sk(auth_nodes, oid);
+        if (!node) {
+            if (!anyPolicy)
+                continue;
+            /*
+             * Create a new node with policy ID from user set and qualifiers
+             * from anyPolicy.
+             */
+            extra = policy_data_new(NULL, oid, node_critical(anyPolicy));
+            if (!extra)
+                return 0;
+            extra->qualifier_set = anyPolicy->data->qualifier_set;
+            extra->flags = POLICY_DATA_FLAG_SHARED_QUALIFIERS
+                | POLICY_DATA_FLAG_EXTRA_NODE;
+            node = level_add_node(NULL, extra, anyPolicy->parent, tree);
+        }
+        if (!tree->user_policies) {
+            tree->user_policies = sk_X509_POLICY_NODE_new_null();
+            if (!tree->user_policies)
+                return 1;
+        }
+        if (!sk_X509_POLICY_NODE_push(tree->user_policies, node))
+            return 0;
+    }
+    return 1;
+
+}
+
+static int tree_evaluate(X509_POLICY_TREE *tree)
+{
+    int ret, i;
+    X509_POLICY_LEVEL *curr = tree->levels + 1;
+    const X509_POLICY_CACHE *cache;
+
+    for (i = 1; i < tree->nlevel; i++, curr++) {
+        cache = policy_cache_set(curr->cert);
+        if (!tree_link_nodes(curr, cache))
+            return 0;
+
+        if (!(curr->flags & X509_V_FLAG_INHIBIT_ANY)
+            && !tree_link_any(curr, cache, tree))
+            return 0;
+        tree_print("before tree_prune()", tree, curr);
+        ret = tree_prune(tree, curr);
+        if (ret != 1)
+            return ret;
+    }
+
+    return 1;
+
+}
+
+static void exnode_free(X509_POLICY_NODE *node)
+{
+    if (node->data && (node->data->flags & POLICY_DATA_FLAG_EXTRA_NODE))
+        OPENSSL_free(node);
+}
+
+void X509_policy_tree_free(X509_POLICY_TREE *tree)
+{
+    X509_POLICY_LEVEL *curr;
+    int i;
+
+    if (!tree)
+        return;
+
+    sk_X509_POLICY_NODE_free(tree->auth_policies);
+    sk_X509_POLICY_NODE_pop_free(tree->user_policies, exnode_free);
+
+    for (i = 0, curr = tree->levels; i < tree->nlevel; i++, curr++) {
+        if (curr->cert)
+            X509_free(curr->cert);
+        if (curr->nodes)
+            sk_X509_POLICY_NODE_pop_free(curr->nodes, policy_node_free);
+        if (curr->anyPolicy)
+            policy_node_free(curr->anyPolicy);
+    }
+
+    if (tree->extra_data)
+        sk_X509_POLICY_DATA_pop_free(tree->extra_data, policy_data_free);
+
+    OPENSSL_free(tree->levels);
+    OPENSSL_free(tree);
+
+}
+
+/*-
+ * Application policy checking function.
+ * Return codes:
+ *  0   Internal Error.
+ *  1   Successful.
+ * -1   One or more certificates contain invalid or inconsistent extensions
+ * -2   User constrained policy set empty and requireExplicit true.
+ */
+
+int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
+                      STACK_OF(X509) *certs,
+                      STACK_OF(ASN1_OBJECT) *policy_oids, unsigned int flags)
+{
+    int ret;
+    int calc_ret;
+    X509_POLICY_TREE *tree = NULL;
+    STACK_OF(X509_POLICY_NODE) *nodes, *auth_nodes = NULL;
+    *ptree = NULL;
+
+    *pexplicit_policy = 0;
+    ret = tree_init(&tree, certs, flags);
+
+    switch (ret) {
+
+        /* Tree empty requireExplicit False: OK */
+    case 2:
+        return 1;
+
+        /* Some internal error */
+    case -1:
+        return -1;
+
+        /* Some internal error */
+    case 0:
+        return 0;
+
+        /* Tree empty requireExplicit True: Error */
+
+    case 6:
+        *pexplicit_policy = 1;
+        return -2;
+
+        /* Tree OK requireExplicit True: OK and continue */
+    case 5:
+        *pexplicit_policy = 1;
+        break;
+
+        /* Tree OK: continue */
+
+    case 1:
+        if (!tree)
+            /*
+             * tree_init() returns success and a null tree
+             * if it's just looking at a trust anchor.
+             * I'm not sure that returning success here is
+             * correct, but I'm sure that reporting this
+             * as an internal error which our caller
+             * interprets as a malloc failure is wrong.
+             */
+            return 1;
+        break;
+    }
+
+    if (!tree)
+        goto error;
+    ret = tree_evaluate(tree);
+
+    tree_print("tree_evaluate()", tree, NULL);
+
+    if (ret <= 0)
+        goto error;
+
+    /* Return value 2 means tree empty */
+    if (ret == 2) {
+        X509_policy_tree_free(tree);
+        if (*pexplicit_policy)
+            return -2;
+        else
+            return 1;
+    }
+
+    /* Tree is not empty: continue */
+
+    calc_ret = tree_calculate_authority_set(tree, &auth_nodes);
+
+    if (!calc_ret)
+        goto error;
+
+    ret = tree_calculate_user_set(tree, policy_oids, auth_nodes);
+
+    if (calc_ret == 2)
+        sk_X509_POLICY_NODE_free(auth_nodes);
+
+    if (!ret)
+        goto error;
+
+
+    if (tree)
+        *ptree = tree;
+
+    if (*pexplicit_policy) {
+        nodes = X509_policy_tree_get0_user_policies(tree);
+        if (sk_X509_POLICY_NODE_num(nodes) <= 0)
+            return -2;
+    }
+
+    return 1;
+
+ error:
+
+    X509_policy_tree_free(tree);
+
+    return 0;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c
new file mode 100644
index 0000000..1cc899b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c	
@@ -0,0 +1,207 @@
+/* v3_akey.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "internal.h"
+
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                                 AUTHORITY_KEYID *akeyid,
+                                                 STACK_OF(CONF_VALUE)
+                                                 *extlist);
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                            X509V3_CTX *ctx,
+                                            STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_akey_id = {
+    NID_authority_key_identifier,
+    X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
+    0, 0,
+    NULL
+};
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                                 AUTHORITY_KEYID *akeyid,
+                                                 STACK_OF(CONF_VALUE)
+                                                 *extlist)
+{
+    char *tmp;
+    if (akeyid->keyid) {
+        tmp = x509v3_bytes_to_hex(akeyid->keyid->data, akeyid->keyid->length);
+        X509V3_add_value("keyid", tmp, &extlist);
+        OPENSSL_free(tmp);
+    }
+    if (akeyid->issuer)
+        extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
+    if (akeyid->serial) {
+        tmp = x509v3_bytes_to_hex(akeyid->serial->data, akeyid->serial->length);
+        X509V3_add_value("serial", tmp, &extlist);
+        OPENSSL_free(tmp);
+    }
+    return extlist;
+}
+
+/*
+ * Currently two options: keyid: use the issuers subject keyid, the value
+ * 'always' means its is an error if the issuer certificate doesn't have a
+ * key id. issuer: use the issuers cert issuer and serial number. The default
+ * is to only use this if keyid is not present. With the option 'always' this
+ * is always included.
+ */
+
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                            X509V3_CTX *ctx,
+                                            STACK_OF(CONF_VALUE) *values)
+{
+    char keyid = 0, issuer = 0;
+    size_t i;
+    int j;
+    CONF_VALUE *cnf;
+    ASN1_OCTET_STRING *ikeyid = NULL;
+    X509_NAME *isname = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gen = NULL;
+    ASN1_INTEGER *serial = NULL;
+    X509_EXTENSION *ext;
+    X509 *cert;
+    AUTHORITY_KEYID *akeyid;
+
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        cnf = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(cnf->name, "keyid")) {
+            keyid = 1;
+            if (cnf->value && !strcmp(cnf->value, "always"))
+                keyid = 2;
+        } else if (!strcmp(cnf->name, "issuer")) {
+            issuer = 1;
+            if (cnf->value && !strcmp(cnf->value, "always"))
+                issuer = 2;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_OPTION);
+            ERR_add_error_data(2, "name=", cnf->name);
+            return NULL;
+        }
+    }
+
+    if (!ctx || !ctx->issuer_cert) {
+        if (ctx && (ctx->flags == CTX_TEST))
+            return AUTHORITY_KEYID_new();
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_CERTIFICATE);
+        return NULL;
+    }
+
+    cert = ctx->issuer_cert;
+
+    if (keyid) {
+        j = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
+        if ((j >= 0) && (ext = X509_get_ext(cert, j)))
+            ikeyid = X509V3_EXT_d2i(ext);
+        if (keyid == 2 && !ikeyid) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
+            return NULL;
+        }
+    }
+
+    if ((issuer && !ikeyid) || (issuer == 2)) {
+        isname = X509_NAME_dup(X509_get_issuer_name(cert));
+        serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
+        if (!isname || !serial) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
+            goto err;
+        }
+    }
+
+    if (!(akeyid = AUTHORITY_KEYID_new()))
+        goto err;
+
+    if (isname) {
+        if (!(gens = sk_GENERAL_NAME_new_null())
+            || !(gen = GENERAL_NAME_new())
+            || !sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen->type = GEN_DIRNAME;
+        gen->d.dirn = isname;
+    }
+
+    akeyid->issuer = gens;
+    akeyid->serial = serial;
+    akeyid->keyid = ikeyid;
+
+    return akeyid;
+
+ err:
+    X509_NAME_free(isname);
+    M_ASN1_INTEGER_free(serial);
+    M_ASN1_OCTET_STRING_free(ikeyid);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c.grpc_back
new file mode 100644
index 0000000..30c02e2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akey.c.grpc_back	
@@ -0,0 +1,207 @@
+/* v3_akey.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "internal.h"
+
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                                 AUTHORITY_KEYID *akeyid,
+                                                 STACK_OF(CONF_VALUE)
+                                                 *extlist);
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                            X509V3_CTX *ctx,
+                                            STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_akey_id = {
+    NID_authority_key_identifier,
+    X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
+    0, 0,
+    NULL
+};
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                                 AUTHORITY_KEYID *akeyid,
+                                                 STACK_OF(CONF_VALUE)
+                                                 *extlist)
+{
+    char *tmp;
+    if (akeyid->keyid) {
+        tmp = x509v3_bytes_to_hex(akeyid->keyid->data, akeyid->keyid->length);
+        X509V3_add_value("keyid", tmp, &extlist);
+        OPENSSL_free(tmp);
+    }
+    if (akeyid->issuer)
+        extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
+    if (akeyid->serial) {
+        tmp = x509v3_bytes_to_hex(akeyid->serial->data, akeyid->serial->length);
+        X509V3_add_value("serial", tmp, &extlist);
+        OPENSSL_free(tmp);
+    }
+    return extlist;
+}
+
+/*
+ * Currently two options: keyid: use the issuers subject keyid, the value
+ * 'always' means its is an error if the issuer certificate doesn't have a
+ * key id. issuer: use the issuers cert issuer and serial number. The default
+ * is to only use this if keyid is not present. With the option 'always' this
+ * is always included.
+ */
+
+static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
+                                            X509V3_CTX *ctx,
+                                            STACK_OF(CONF_VALUE) *values)
+{
+    char keyid = 0, issuer = 0;
+    size_t i;
+    int j;
+    CONF_VALUE *cnf;
+    ASN1_OCTET_STRING *ikeyid = NULL;
+    X509_NAME *isname = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gen = NULL;
+    ASN1_INTEGER *serial = NULL;
+    X509_EXTENSION *ext;
+    X509 *cert;
+    AUTHORITY_KEYID *akeyid;
+
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        cnf = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(cnf->name, "keyid")) {
+            keyid = 1;
+            if (cnf->value && !strcmp(cnf->value, "always"))
+                keyid = 2;
+        } else if (!strcmp(cnf->name, "issuer")) {
+            issuer = 1;
+            if (cnf->value && !strcmp(cnf->value, "always"))
+                issuer = 2;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_OPTION);
+            ERR_add_error_data(2, "name=", cnf->name);
+            return NULL;
+        }
+    }
+
+    if (!ctx || !ctx->issuer_cert) {
+        if (ctx && (ctx->flags == CTX_TEST))
+            return AUTHORITY_KEYID_new();
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_CERTIFICATE);
+        return NULL;
+    }
+
+    cert = ctx->issuer_cert;
+
+    if (keyid) {
+        j = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
+        if ((j >= 0) && (ext = X509_get_ext(cert, j)))
+            ikeyid = X509V3_EXT_d2i(ext);
+        if (keyid == 2 && !ikeyid) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
+            return NULL;
+        }
+    }
+
+    if ((issuer && !ikeyid) || (issuer == 2)) {
+        isname = X509_NAME_dup(X509_get_issuer_name(cert));
+        serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
+        if (!isname || !serial) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
+            goto err;
+        }
+    }
+
+    if (!(akeyid = AUTHORITY_KEYID_new()))
+        goto err;
+
+    if (isname) {
+        if (!(gens = sk_GENERAL_NAME_new_null())
+            || !(gen = GENERAL_NAME_new())
+            || !sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen->type = GEN_DIRNAME;
+        gen->d.dirn = isname;
+    }
+
+    akeyid->issuer = gens;
+    akeyid->serial = serial;
+    akeyid->keyid = ikeyid;
+
+    return akeyid;
+
+ err:
+    X509_NAME_free(isname);
+    M_ASN1_INTEGER_free(serial);
+    M_ASN1_OCTET_STRING_free(ikeyid);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c
new file mode 100644
index 0000000..950cae9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c	
@@ -0,0 +1,72 @@
+/* v3_akey_asn1.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/x509v3.h>
+
+
+ASN1_SEQUENCE(AUTHORITY_KEYID) = {
+        ASN1_IMP_OPT(AUTHORITY_KEYID, keyid, ASN1_OCTET_STRING, 0),
+        ASN1_IMP_SEQUENCE_OF_OPT(AUTHORITY_KEYID, issuer, GENERAL_NAME, 1),
+        ASN1_IMP_OPT(AUTHORITY_KEYID, serial, ASN1_INTEGER, 2)
+} ASN1_SEQUENCE_END(AUTHORITY_KEYID)
+
+IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_KEYID)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c.grpc_back
new file mode 100644
index 0000000..844dee5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_akeya.c.grpc_back	
@@ -0,0 +1,72 @@
+/* v3_akey_asn1.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
+
+
+ASN1_SEQUENCE(AUTHORITY_KEYID) = {
+        ASN1_IMP_OPT(AUTHORITY_KEYID, keyid, ASN1_OCTET_STRING, 0),
+        ASN1_IMP_SEQUENCE_OF_OPT(AUTHORITY_KEYID, issuer, GENERAL_NAME, 1),
+        ASN1_IMP_OPT(AUTHORITY_KEYID, serial, ASN1_INTEGER, 2)
+} ASN1_SEQUENCE_END(AUTHORITY_KEYID)
+
+IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_KEYID)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c
new file mode 100644
index 0000000..9a5cfa3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c	
@@ -0,0 +1,629 @@
+/* v3_alt.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "internal.h"
+
+
+static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval);
+static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval);
+static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
+static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
+static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
+static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
+
+const X509V3_EXT_METHOD v3_alt[] = {
+    {NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     (X509V3_EXT_V2I)v2i_subject_alt,
+     NULL, NULL, NULL},
+
+    {NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     (X509V3_EXT_V2I)v2i_issuer_alt,
+     NULL, NULL, NULL},
+
+    {NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     NULL, NULL, NULL, NULL},
+};
+
+STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
+                                        GENERAL_NAMES *gens,
+                                        STACK_OF(CONF_VALUE) *ret)
+{
+    size_t i;
+    GENERAL_NAME *gen;
+    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+        gen = sk_GENERAL_NAME_value(gens, i);
+        ret = i2v_GENERAL_NAME(method, gen, ret);
+    }
+    if (!ret)
+        return sk_CONF_VALUE_new_null();
+    return ret;
+}
+
+STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
+                                       GENERAL_NAME *gen,
+                                       STACK_OF(CONF_VALUE) *ret)
+{
+    unsigned char *p;
+    char oline[256], htmp[5];
+    int i;
+    switch (gen->type) {
+    case GEN_OTHERNAME:
+        if (!X509V3_add_value("othername", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_X400:
+        if (!X509V3_add_value("X400Name", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_EDIPARTY:
+        if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_EMAIL:
+        if (!X509V3_add_value_uchar("email", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_DNS:
+        if (!X509V3_add_value_uchar("DNS", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_URI:
+        if (!X509V3_add_value_uchar("URI", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_DIRNAME:
+        if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL
+                || !X509V3_add_value("DirName", oline, &ret))
+            return NULL;
+        break;
+
+    case GEN_IPADD:
+        p = gen->d.ip->data;
+        if (gen->d.ip->length == 4)
+            BIO_snprintf(oline, sizeof oline,
+                         "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
+        else if (gen->d.ip->length == 16) {
+            oline[0] = 0;
+            for (i = 0; i < 8; i++) {
+                BIO_snprintf(htmp, sizeof htmp, "%X", p[0] << 8 | p[1]);
+                p += 2;
+                OPENSSL_strlcat(oline, htmp, sizeof(oline));
+                if (i != 7)
+                    OPENSSL_strlcat(oline, ":", sizeof(oline));
+            }
+        } else {
+            if (!X509V3_add_value("IP Address", "<invalid>", &ret))
+                return NULL;
+            break;
+        }
+        if (!X509V3_add_value("IP Address", oline, &ret))
+            return NULL;
+        break;
+
+    case GEN_RID:
+        i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
+        if (!X509V3_add_value("Registered ID", oline, &ret))
+            return NULL;
+        break;
+    }
+    return ret;
+}
+
+int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
+{
+    unsigned char *p;
+    int i;
+    switch (gen->type) {
+    case GEN_OTHERNAME:
+        BIO_printf(out, "othername:<unsupported>");
+        break;
+
+    case GEN_X400:
+        BIO_printf(out, "X400Name:<unsupported>");
+        break;
+
+    case GEN_EDIPARTY:
+        /* Maybe fix this: it is supported now */
+        BIO_printf(out, "EdiPartyName:<unsupported>");
+        break;
+
+    case GEN_EMAIL:
+        BIO_printf(out, "email:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_DNS:
+        BIO_printf(out, "DNS:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_URI:
+        BIO_printf(out, "URI:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_DIRNAME:
+        BIO_printf(out, "DirName: ");
+        X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
+        break;
+
+    case GEN_IPADD:
+        p = gen->d.ip->data;
+        if (gen->d.ip->length == 4)
+            BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
+        else if (gen->d.ip->length == 16) {
+            BIO_printf(out, "IP Address");
+            for (i = 0; i < 8; i++) {
+                BIO_printf(out, ":%X", p[0] << 8 | p[1]);
+                p += 2;
+            }
+            BIO_puts(out, "\n");
+        } else {
+            BIO_printf(out, "IP Address:<invalid>");
+            break;
+        }
+        break;
+
+    case GEN_RID:
+        BIO_printf(out, "Registered ID");
+        i2a_ASN1_OBJECT(out, gen->d.rid);
+        break;
+    }
+    return 1;
+}
+
+static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!x509v3_name_cmp(cnf->name, "issuer") && cnf->value &&
+            !strcmp(cnf->value, "copy")) {
+            if (!copy_issuer(ctx, gens))
+                goto err;
+        } else {
+            GENERAL_NAME *gen;
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            sk_GENERAL_NAME_push(gens, gen);
+        }
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+/* Append subject altname of issuer to issuer alt name of subject */
+
+static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
+{
+    GENERAL_NAMES *ialt;
+    GENERAL_NAME *gen;
+    X509_EXTENSION *ext;
+    int i;
+    size_t j;
+    if (ctx && (ctx->flags == CTX_TEST))
+        return 1;
+    if (!ctx || !ctx->issuer_cert) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_DETAILS);
+        goto err;
+    }
+    i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
+    if (i < 0)
+        return 1;
+    if (!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
+        !(ialt = X509V3_EXT_d2i(ext))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ISSUER_DECODE_ERROR);
+        goto err;
+    }
+
+    for (j = 0; j < sk_GENERAL_NAME_num(ialt); j++) {
+        gen = sk_GENERAL_NAME_value(ialt, j);
+        if (!sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+    sk_GENERAL_NAME_free(ialt);
+
+    return 1;
+
+ err:
+    return 0;
+
+}
+
+static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
+            !strcmp(cnf->value, "copy")) {
+            if (!copy_email(ctx, gens, 0))
+                goto err;
+        } else if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
+                   !strcmp(cnf->value, "move")) {
+            if (!copy_email(ctx, gens, 1))
+                goto err;
+        } else {
+            GENERAL_NAME *gen;
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            sk_GENERAL_NAME_push(gens, gen);
+        }
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+/*
+ * Copy any email addresses in a certificate or request to GENERAL_NAMES
+ */
+
+static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
+{
+    X509_NAME *nm;
+    ASN1_IA5STRING *email = NULL;
+    X509_NAME_ENTRY *ne;
+    GENERAL_NAME *gen = NULL;
+    int i;
+    if (ctx != NULL && ctx->flags == CTX_TEST)
+        return 1;
+    if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_SUBJECT_DETAILS);
+        goto err;
+    }
+    /* Find the subject name */
+    if (ctx->subject_cert)
+        nm = X509_get_subject_name(ctx->subject_cert);
+    else
+        nm = X509_REQ_get_subject_name(ctx->subject_req);
+
+    /* Now add any email address(es) to STACK */
+    i = -1;
+    while ((i = X509_NAME_get_index_by_NID(nm,
+                                           NID_pkcs9_emailAddress, i)) >= 0) {
+        ne = X509_NAME_get_entry(nm, i);
+        email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
+        if (move_p) {
+            X509_NAME_delete_entry(nm, i);
+            X509_NAME_ENTRY_free(ne);
+            i--;
+        }
+        if (!email || !(gen = GENERAL_NAME_new())) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen->d.ia5 = email;
+        email = NULL;
+        gen->type = GEN_EMAIL;
+        if (!sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen = NULL;
+    }
+
+    return 1;
+
+ err:
+    GENERAL_NAME_free(gen);
+    M_ASN1_IA5STRING_free(email);
+    return 0;
+
+}
+
+GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAME *gen;
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+            goto err;
+        sk_GENERAL_NAME_push(gens, gen);
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
+                               X509V3_CTX *ctx, CONF_VALUE *cnf)
+{
+    return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
+}
+
+GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
+                               const X509V3_EXT_METHOD *method,
+                               X509V3_CTX *ctx, int gen_type, char *value,
+                               int is_nc)
+{
+    char is_string = 0;
+    GENERAL_NAME *gen = NULL;
+
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
+        return NULL;
+    }
+
+    if (out)
+        gen = out;
+    else {
+        gen = GENERAL_NAME_new();
+        if (gen == NULL) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    }
+
+    switch (gen_type) {
+    case GEN_URI:
+    case GEN_EMAIL:
+    case GEN_DNS:
+        is_string = 1;
+        break;
+
+    case GEN_RID:
+        {
+            ASN1_OBJECT *obj;
+            if (!(obj = OBJ_txt2obj(value, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
+                ERR_add_error_data(2, "value=", value);
+                goto err;
+            }
+            gen->d.rid = obj;
+        }
+        break;
+
+    case GEN_IPADD:
+        if (is_nc)
+            gen->d.ip = a2i_IPADDRESS_NC(value);
+        else
+            gen->d.ip = a2i_IPADDRESS(value);
+        if (gen->d.ip == NULL) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_IP_ADDRESS);
+            ERR_add_error_data(2, "value=", value);
+            goto err;
+        }
+        break;
+
+    case GEN_DIRNAME:
+        if (!do_dirname(gen, value, ctx)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_DIRNAME_ERROR);
+            goto err;
+        }
+        break;
+
+    case GEN_OTHERNAME:
+        if (!do_othername(gen, value, ctx)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_OTHERNAME_ERROR);
+            goto err;
+        }
+        break;
+    default:
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_TYPE);
+        goto err;
+    }
+
+    if (is_string) {
+        if (!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
+            !ASN1_STRING_set(gen->d.ia5, (unsigned char *)value,
+                             strlen(value))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+
+    gen->type = gen_type;
+
+    return gen;
+
+ err:
+    if (!out)
+        GENERAL_NAME_free(gen);
+    return NULL;
+}
+
+GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
+                                  const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
+{
+    int type;
+
+    char *name, *value;
+
+    name = cnf->name;
+    value = cnf->value;
+
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
+        return NULL;
+    }
+
+    if (!x509v3_name_cmp(name, "email"))
+        type = GEN_EMAIL;
+    else if (!x509v3_name_cmp(name, "URI"))
+        type = GEN_URI;
+    else if (!x509v3_name_cmp(name, "DNS"))
+        type = GEN_DNS;
+    else if (!x509v3_name_cmp(name, "RID"))
+        type = GEN_RID;
+    else if (!x509v3_name_cmp(name, "IP"))
+        type = GEN_IPADD;
+    else if (!x509v3_name_cmp(name, "dirName"))
+        type = GEN_DIRNAME;
+    else if (!x509v3_name_cmp(name, "otherName"))
+        type = GEN_OTHERNAME;
+    else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_OPTION);
+        ERR_add_error_data(2, "name=", name);
+        return NULL;
+    }
+
+    return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
+
+}
+
+static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
+{
+    char *objtmp = NULL, *p;
+    int objlen;
+    if (!(p = strchr(value, ';')))
+        return 0;
+    if (!(gen->d.otherName = OTHERNAME_new()))
+        return 0;
+    /*
+     * Free this up because we will overwrite it. no need to free type_id
+     * because it is static
+     */
+    ASN1_TYPE_free(gen->d.otherName->value);
+    if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
+        return 0;
+    objlen = p - value;
+    objtmp = OPENSSL_malloc(objlen + 1);
+    if (objtmp == NULL)
+        return 0;
+    OPENSSL_strlcpy(objtmp, value, objlen + 1);
+    gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
+    OPENSSL_free(objtmp);
+    if (!gen->d.otherName->type_id)
+        return 0;
+    return 1;
+}
+
+static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
+{
+    int ret = 0;
+    STACK_OF(CONF_VALUE) *sk = NULL;
+    X509_NAME *nm = X509_NAME_new();
+    if (nm == NULL)
+        goto err;
+    sk = X509V3_get_section(ctx, value);
+    if (sk == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+        ERR_add_error_data(2, "section=", value);
+        goto err;
+    }
+    /* FIXME: should allow other character types... */
+    if (!X509V3_NAME_from_section(nm, sk, MBSTRING_ASC))
+        goto err;
+    gen->d.dirn = nm;
+    ret = 1;
+
+ err:
+    if (!ret)
+        X509_NAME_free(nm);
+    X509V3_section_free(ctx, sk);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c.grpc_back
new file mode 100644
index 0000000..0e79b45
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_alt.c.grpc_back	
@@ -0,0 +1,629 @@
+/* v3_alt.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "internal.h"
+
+
+static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval);
+static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval);
+static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
+static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
+static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
+static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
+
+const X509V3_EXT_METHOD v3_alt[] = {
+    {NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     (X509V3_EXT_V2I)v2i_subject_alt,
+     NULL, NULL, NULL},
+
+    {NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     (X509V3_EXT_V2I)v2i_issuer_alt,
+     NULL, NULL, NULL},
+
+    {NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
+     0, 0, 0, 0,
+     0, 0,
+     (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
+     NULL, NULL, NULL, NULL},
+};
+
+STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
+                                        GENERAL_NAMES *gens,
+                                        STACK_OF(CONF_VALUE) *ret)
+{
+    size_t i;
+    GENERAL_NAME *gen;
+    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+        gen = sk_GENERAL_NAME_value(gens, i);
+        ret = i2v_GENERAL_NAME(method, gen, ret);
+    }
+    if (!ret)
+        return sk_CONF_VALUE_new_null();
+    return ret;
+}
+
+STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
+                                       GENERAL_NAME *gen,
+                                       STACK_OF(CONF_VALUE) *ret)
+{
+    unsigned char *p;
+    char oline[256], htmp[5];
+    int i;
+    switch (gen->type) {
+    case GEN_OTHERNAME:
+        if (!X509V3_add_value("othername", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_X400:
+        if (!X509V3_add_value("X400Name", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_EDIPARTY:
+        if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret))
+            return NULL;
+        break;
+
+    case GEN_EMAIL:
+        if (!X509V3_add_value_uchar("email", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_DNS:
+        if (!X509V3_add_value_uchar("DNS", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_URI:
+        if (!X509V3_add_value_uchar("URI", gen->d.ia5->data, &ret))
+            return NULL;
+        break;
+
+    case GEN_DIRNAME:
+        if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL
+                || !X509V3_add_value("DirName", oline, &ret))
+            return NULL;
+        break;
+
+    case GEN_IPADD:
+        p = gen->d.ip->data;
+        if (gen->d.ip->length == 4)
+            BIO_snprintf(oline, sizeof oline,
+                         "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
+        else if (gen->d.ip->length == 16) {
+            oline[0] = 0;
+            for (i = 0; i < 8; i++) {
+                BIO_snprintf(htmp, sizeof htmp, "%X", p[0] << 8 | p[1]);
+                p += 2;
+                OPENSSL_strlcat(oline, htmp, sizeof(oline));
+                if (i != 7)
+                    OPENSSL_strlcat(oline, ":", sizeof(oline));
+            }
+        } else {
+            if (!X509V3_add_value("IP Address", "<invalid>", &ret))
+                return NULL;
+            break;
+        }
+        if (!X509V3_add_value("IP Address", oline, &ret))
+            return NULL;
+        break;
+
+    case GEN_RID:
+        i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
+        if (!X509V3_add_value("Registered ID", oline, &ret))
+            return NULL;
+        break;
+    }
+    return ret;
+}
+
+int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
+{
+    unsigned char *p;
+    int i;
+    switch (gen->type) {
+    case GEN_OTHERNAME:
+        BIO_printf(out, "othername:<unsupported>");
+        break;
+
+    case GEN_X400:
+        BIO_printf(out, "X400Name:<unsupported>");
+        break;
+
+    case GEN_EDIPARTY:
+        /* Maybe fix this: it is supported now */
+        BIO_printf(out, "EdiPartyName:<unsupported>");
+        break;
+
+    case GEN_EMAIL:
+        BIO_printf(out, "email:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_DNS:
+        BIO_printf(out, "DNS:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_URI:
+        BIO_printf(out, "URI:");
+        ASN1_STRING_print(out, gen->d.ia5);
+        break;
+
+    case GEN_DIRNAME:
+        BIO_printf(out, "DirName: ");
+        X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
+        break;
+
+    case GEN_IPADD:
+        p = gen->d.ip->data;
+        if (gen->d.ip->length == 4)
+            BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
+        else if (gen->d.ip->length == 16) {
+            BIO_printf(out, "IP Address");
+            for (i = 0; i < 8; i++) {
+                BIO_printf(out, ":%X", p[0] << 8 | p[1]);
+                p += 2;
+            }
+            BIO_puts(out, "\n");
+        } else {
+            BIO_printf(out, "IP Address:<invalid>");
+            break;
+        }
+        break;
+
+    case GEN_RID:
+        BIO_printf(out, "Registered ID");
+        i2a_ASN1_OBJECT(out, gen->d.rid);
+        break;
+    }
+    return 1;
+}
+
+static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!x509v3_name_cmp(cnf->name, "issuer") && cnf->value &&
+            !strcmp(cnf->value, "copy")) {
+            if (!copy_issuer(ctx, gens))
+                goto err;
+        } else {
+            GENERAL_NAME *gen;
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            sk_GENERAL_NAME_push(gens, gen);
+        }
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+/* Append subject altname of issuer to issuer alt name of subject */
+
+static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
+{
+    GENERAL_NAMES *ialt;
+    GENERAL_NAME *gen;
+    X509_EXTENSION *ext;
+    int i;
+    size_t j;
+    if (ctx && (ctx->flags == CTX_TEST))
+        return 1;
+    if (!ctx || !ctx->issuer_cert) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_DETAILS);
+        goto err;
+    }
+    i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
+    if (i < 0)
+        return 1;
+    if (!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
+        !(ialt = X509V3_EXT_d2i(ext))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ISSUER_DECODE_ERROR);
+        goto err;
+    }
+
+    for (j = 0; j < sk_GENERAL_NAME_num(ialt); j++) {
+        gen = sk_GENERAL_NAME_value(ialt, j);
+        if (!sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+    sk_GENERAL_NAME_free(ialt);
+
+    return 1;
+
+ err:
+    return 0;
+
+}
+
+static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
+            !strcmp(cnf->value, "copy")) {
+            if (!copy_email(ctx, gens, 0))
+                goto err;
+        } else if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
+                   !strcmp(cnf->value, "move")) {
+            if (!copy_email(ctx, gens, 1))
+                goto err;
+        } else {
+            GENERAL_NAME *gen;
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            sk_GENERAL_NAME_push(gens, gen);
+        }
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+/*
+ * Copy any email addresses in a certificate or request to GENERAL_NAMES
+ */
+
+static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
+{
+    X509_NAME *nm;
+    ASN1_IA5STRING *email = NULL;
+    X509_NAME_ENTRY *ne;
+    GENERAL_NAME *gen = NULL;
+    int i;
+    if (ctx != NULL && ctx->flags == CTX_TEST)
+        return 1;
+    if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_SUBJECT_DETAILS);
+        goto err;
+    }
+    /* Find the subject name */
+    if (ctx->subject_cert)
+        nm = X509_get_subject_name(ctx->subject_cert);
+    else
+        nm = X509_REQ_get_subject_name(ctx->subject_req);
+
+    /* Now add any email address(es) to STACK */
+    i = -1;
+    while ((i = X509_NAME_get_index_by_NID(nm,
+                                           NID_pkcs9_emailAddress, i)) >= 0) {
+        ne = X509_NAME_get_entry(nm, i);
+        email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
+        if (move_p) {
+            X509_NAME_delete_entry(nm, i);
+            X509_NAME_ENTRY_free(ne);
+            i--;
+        }
+        if (!email || !(gen = GENERAL_NAME_new())) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen->d.ia5 = email;
+        email = NULL;
+        gen->type = GEN_EMAIL;
+        if (!sk_GENERAL_NAME_push(gens, gen)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        gen = NULL;
+    }
+
+    return 1;
+
+ err:
+    GENERAL_NAME_free(gen);
+    M_ASN1_IA5STRING_free(email);
+    return 0;
+
+}
+
+GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    GENERAL_NAME *gen;
+    GENERAL_NAMES *gens = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(gens = sk_GENERAL_NAME_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+            goto err;
+        sk_GENERAL_NAME_push(gens, gen);
+    }
+    return gens;
+ err:
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return NULL;
+}
+
+GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
+                               X509V3_CTX *ctx, CONF_VALUE *cnf)
+{
+    return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
+}
+
+GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
+                               const X509V3_EXT_METHOD *method,
+                               X509V3_CTX *ctx, int gen_type, char *value,
+                               int is_nc)
+{
+    char is_string = 0;
+    GENERAL_NAME *gen = NULL;
+
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
+        return NULL;
+    }
+
+    if (out)
+        gen = out;
+    else {
+        gen = GENERAL_NAME_new();
+        if (gen == NULL) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+    }
+
+    switch (gen_type) {
+    case GEN_URI:
+    case GEN_EMAIL:
+    case GEN_DNS:
+        is_string = 1;
+        break;
+
+    case GEN_RID:
+        {
+            ASN1_OBJECT *obj;
+            if (!(obj = OBJ_txt2obj(value, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
+                ERR_add_error_data(2, "value=", value);
+                goto err;
+            }
+            gen->d.rid = obj;
+        }
+        break;
+
+    case GEN_IPADD:
+        if (is_nc)
+            gen->d.ip = a2i_IPADDRESS_NC(value);
+        else
+            gen->d.ip = a2i_IPADDRESS(value);
+        if (gen->d.ip == NULL) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_IP_ADDRESS);
+            ERR_add_error_data(2, "value=", value);
+            goto err;
+        }
+        break;
+
+    case GEN_DIRNAME:
+        if (!do_dirname(gen, value, ctx)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_DIRNAME_ERROR);
+            goto err;
+        }
+        break;
+
+    case GEN_OTHERNAME:
+        if (!do_othername(gen, value, ctx)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_OTHERNAME_ERROR);
+            goto err;
+        }
+        break;
+    default:
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_TYPE);
+        goto err;
+    }
+
+    if (is_string) {
+        if (!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
+            !ASN1_STRING_set(gen->d.ia5, (unsigned char *)value,
+                             strlen(value))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+
+    gen->type = gen_type;
+
+    return gen;
+
+ err:
+    if (!out)
+        GENERAL_NAME_free(gen);
+    return NULL;
+}
+
+GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
+                                  const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
+{
+    int type;
+
+    char *name, *value;
+
+    name = cnf->name;
+    value = cnf->value;
+
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
+        return NULL;
+    }
+
+    if (!x509v3_name_cmp(name, "email"))
+        type = GEN_EMAIL;
+    else if (!x509v3_name_cmp(name, "URI"))
+        type = GEN_URI;
+    else if (!x509v3_name_cmp(name, "DNS"))
+        type = GEN_DNS;
+    else if (!x509v3_name_cmp(name, "RID"))
+        type = GEN_RID;
+    else if (!x509v3_name_cmp(name, "IP"))
+        type = GEN_IPADD;
+    else if (!x509v3_name_cmp(name, "dirName"))
+        type = GEN_DIRNAME;
+    else if (!x509v3_name_cmp(name, "otherName"))
+        type = GEN_OTHERNAME;
+    else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_OPTION);
+        ERR_add_error_data(2, "name=", name);
+        return NULL;
+    }
+
+    return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
+
+}
+
+static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
+{
+    char *objtmp = NULL, *p;
+    int objlen;
+    if (!(p = strchr(value, ';')))
+        return 0;
+    if (!(gen->d.otherName = OTHERNAME_new()))
+        return 0;
+    /*
+     * Free this up because we will overwrite it. no need to free type_id
+     * because it is static
+     */
+    ASN1_TYPE_free(gen->d.otherName->value);
+    if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
+        return 0;
+    objlen = p - value;
+    objtmp = OPENSSL_malloc(objlen + 1);
+    if (objtmp == NULL)
+        return 0;
+    OPENSSL_strlcpy(objtmp, value, objlen + 1);
+    gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
+    OPENSSL_free(objtmp);
+    if (!gen->d.otherName->type_id)
+        return 0;
+    return 1;
+}
+
+static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
+{
+    int ret = 0;
+    STACK_OF(CONF_VALUE) *sk = NULL;
+    X509_NAME *nm = X509_NAME_new();
+    if (nm == NULL)
+        goto err;
+    sk = X509V3_get_section(ctx, value);
+    if (sk == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+        ERR_add_error_data(2, "section=", value);
+        goto err;
+    }
+    /* FIXME: should allow other character types... */
+    if (!X509V3_NAME_from_section(nm, sk, MBSTRING_ASC))
+        goto err;
+    gen->d.dirn = nm;
+    ret = 1;
+
+ err:
+    if (!ret)
+        X509_NAME_free(nm);
+    X509V3_section_free(ctx, sk);
+    return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c
new file mode 100644
index 0000000..ee52e14
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c	
@@ -0,0 +1,133 @@
+/* v3_bcons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist);
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_bcons = {
+    NID_basic_constraints, 0,
+    ASN1_ITEM_ref(BASIC_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
+    (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
+    NULL, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
+        ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
+        ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
+} ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
+
+IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist)
+{
+    X509V3_add_value_bool("CA", bcons->ca, &extlist);
+    X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
+    return extlist;
+}
+
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values)
+{
+    BASIC_CONSTRAINTS *bcons = NULL;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(bcons = BASIC_CONSTRAINTS_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        val = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(val->name, "CA")) {
+            if (!X509V3_get_value_bool(val, &bcons->ca))
+                goto err;
+        } else if (!strcmp(val->name, "pathlen")) {
+            if (!X509V3_get_value_int(val, &bcons->pathlen))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    return bcons;
+ err:
+    BASIC_CONSTRAINTS_free(bcons);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c.grpc_back
new file mode 100644
index 0000000..aefefdf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bcons.c.grpc_back	
@@ -0,0 +1,133 @@
+/* v3_bcons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist);
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_bcons = {
+    NID_basic_constraints, 0,
+    ASN1_ITEM_ref(BASIC_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
+    (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
+    NULL, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
+        ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
+        ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
+} ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
+
+IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                   BASIC_CONSTRAINTS *bcons,
+                                                   STACK_OF(CONF_VALUE)
+                                                   *extlist)
+{
+    X509V3_add_value_bool("CA", bcons->ca, &extlist);
+    X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
+    return extlist;
+}
+
+static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
+                                                X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *values)
+{
+    BASIC_CONSTRAINTS *bcons = NULL;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(bcons = BASIC_CONSTRAINTS_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        val = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(val->name, "CA")) {
+            if (!X509V3_get_value_bool(val, &bcons->ca))
+                goto err;
+        } else if (!strcmp(val->name, "pathlen")) {
+            if (!X509V3_get_value_int(val, &bcons->pathlen))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    return bcons;
+ err:
+    BASIC_CONSTRAINTS_free(bcons);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c
new file mode 100644
index 0000000..0e8d074
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c	
@@ -0,0 +1,141 @@
+/* v3_bitst.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static const BIT_STRING_BITNAME ns_cert_type_table[] = {
+    {0, "SSL Client", "client"},
+    {1, "SSL Server", "server"},
+    {2, "S/MIME", "email"},
+    {3, "Object Signing", "objsign"},
+    {4, "Unused", "reserved"},
+    {5, "SSL CA", "sslCA"},
+    {6, "S/MIME CA", "emailCA"},
+    {7, "Object Signing CA", "objCA"},
+    {-1, NULL, NULL}
+};
+
+static const BIT_STRING_BITNAME key_usage_type_table[] = {
+    {0, "Digital Signature", "digitalSignature"},
+    {1, "Non Repudiation", "nonRepudiation"},
+    {2, "Key Encipherment", "keyEncipherment"},
+    {3, "Data Encipherment", "dataEncipherment"},
+    {4, "Key Agreement", "keyAgreement"},
+    {5, "Certificate Sign", "keyCertSign"},
+    {6, "CRL Sign", "cRLSign"},
+    {7, "Encipher Only", "encipherOnly"},
+    {8, "Decipher Only", "decipherOnly"},
+    {-1, NULL, NULL}
+};
+
+const X509V3_EXT_METHOD v3_nscert =
+EXT_BITSTRING(NID_netscape_cert_type, ns_cert_type_table);
+const X509V3_EXT_METHOD v3_key_usage =
+EXT_BITSTRING(NID_key_usage, key_usage_type_table);
+
+STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+                                          ASN1_BIT_STRING *bits,
+                                          STACK_OF(CONF_VALUE) *ret)
+{
+    const BIT_STRING_BITNAME *bnam;
+    for (bnam = method->usr_data; bnam->lname; bnam++) {
+        if (ASN1_BIT_STRING_get_bit(bits, bnam->bitnum))
+            X509V3_add_value(bnam->lname, NULL, &ret);
+    }
+    return ret;
+}
+
+ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval)
+{
+    CONF_VALUE *val;
+    ASN1_BIT_STRING *bs;
+    size_t i;
+    const BIT_STRING_BITNAME *bnam;
+    if (!(bs = M_ASN1_BIT_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        for (bnam = method->usr_data; bnam->lname; bnam++) {
+            if (!strcmp(bnam->sname, val->name) ||
+                !strcmp(bnam->lname, val->name)) {
+                if (!ASN1_BIT_STRING_set_bit(bs, bnam->bitnum, 1)) {
+                    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                    M_ASN1_BIT_STRING_free(bs);
+                    return NULL;
+                }
+                break;
+            }
+        }
+        if (!bnam->lname) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT);
+            X509V3_conf_err(val);
+            M_ASN1_BIT_STRING_free(bs);
+            return NULL;
+        }
+    }
+    return bs;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c.grpc_back
new file mode 100644
index 0000000..86a8c36
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_bitst.c.grpc_back	
@@ -0,0 +1,141 @@
+/* v3_bitst.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static const BIT_STRING_BITNAME ns_cert_type_table[] = {
+    {0, "SSL Client", "client"},
+    {1, "SSL Server", "server"},
+    {2, "S/MIME", "email"},
+    {3, "Object Signing", "objsign"},
+    {4, "Unused", "reserved"},
+    {5, "SSL CA", "sslCA"},
+    {6, "S/MIME CA", "emailCA"},
+    {7, "Object Signing CA", "objCA"},
+    {-1, NULL, NULL}
+};
+
+static const BIT_STRING_BITNAME key_usage_type_table[] = {
+    {0, "Digital Signature", "digitalSignature"},
+    {1, "Non Repudiation", "nonRepudiation"},
+    {2, "Key Encipherment", "keyEncipherment"},
+    {3, "Data Encipherment", "dataEncipherment"},
+    {4, "Key Agreement", "keyAgreement"},
+    {5, "Certificate Sign", "keyCertSign"},
+    {6, "CRL Sign", "cRLSign"},
+    {7, "Encipher Only", "encipherOnly"},
+    {8, "Decipher Only", "decipherOnly"},
+    {-1, NULL, NULL}
+};
+
+const X509V3_EXT_METHOD v3_nscert =
+EXT_BITSTRING(NID_netscape_cert_type, ns_cert_type_table);
+const X509V3_EXT_METHOD v3_key_usage =
+EXT_BITSTRING(NID_key_usage, key_usage_type_table);
+
+STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+                                          ASN1_BIT_STRING *bits,
+                                          STACK_OF(CONF_VALUE) *ret)
+{
+    const BIT_STRING_BITNAME *bnam;
+    for (bnam = method->usr_data; bnam->lname; bnam++) {
+        if (ASN1_BIT_STRING_get_bit(bits, bnam->bitnum))
+            X509V3_add_value(bnam->lname, NULL, &ret);
+    }
+    return ret;
+}
+
+ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+                                     X509V3_CTX *ctx,
+                                     STACK_OF(CONF_VALUE) *nval)
+{
+    CONF_VALUE *val;
+    ASN1_BIT_STRING *bs;
+    size_t i;
+    const BIT_STRING_BITNAME *bnam;
+    if (!(bs = M_ASN1_BIT_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        for (bnam = method->usr_data; bnam->lname; bnam++) {
+            if (!strcmp(bnam->sname, val->name) ||
+                !strcmp(bnam->lname, val->name)) {
+                if (!ASN1_BIT_STRING_set_bit(bs, bnam->bitnum, 1)) {
+                    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                    M_ASN1_BIT_STRING_free(bs);
+                    return NULL;
+                }
+                break;
+            }
+        }
+        if (!bnam->lname) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT);
+            X509V3_conf_err(val);
+            M_ASN1_BIT_STRING_free(bs);
+            return NULL;
+        }
+    }
+    return bs;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c
new file mode 100644
index 0000000..c346ad2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c	
@@ -0,0 +1,463 @@
+/* v3_conf.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* extension creation utilities */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+static int v3_check_critical(char **value);
+static int v3_check_generic(char **value);
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                    int crit, char *value);
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+                                            int crit, int type,
+                                            X509V3_CTX *ctx);
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+                                  int ext_nid, int crit, void *ext_struc);
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+                                   long *ext_len);
+/* CONF *conf:  Config file    */
+/* char *name:  Name    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
+                                 char *value)
+{
+    int crit;
+    int ext_type;
+    X509_EXTENSION *ret;
+    crit = v3_check_critical(&value);
+    if ((ext_type = v3_check_generic(&value)))
+        return v3_generic_extension(name, value, crit, ext_type, ctx);
+    ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
+    if (!ret) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_IN_EXTENSION);
+        ERR_add_error_data(4, "name=", name, ", value=", value);
+    }
+    return ret;
+}
+
+/* CONF *conf:  Config file    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                     char *value)
+{
+    int crit;
+    int ext_type;
+    crit = v3_check_critical(&value);
+    if ((ext_type = v3_check_generic(&value)))
+        return v3_generic_extension(OBJ_nid2sn(ext_nid),
+                                    value, crit, ext_type, ctx);
+    return do_ext_nconf(conf, ctx, ext_nid, crit, value);
+}
+
+/* CONF *conf:  Config file    */
+/* char *value:  Value    */
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                    int crit, char *value)
+{
+    const X509V3_EXT_METHOD *method;
+    X509_EXTENSION *ext;
+    STACK_OF(CONF_VALUE) *nval;
+    void *ext_struc;
+    if (ext_nid == NID_undef) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME);
+        return NULL;
+    }
+    if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+        return NULL;
+    }
+    /* Now get internal extension representation based on type */
+    if (method->v2i) {
+        if (*value == '@')
+            nval = NCONF_get_section(conf, value + 1);
+        else
+            nval = X509V3_parse_list(value);
+        if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_EXTENSION_STRING);
+            ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=",
+                               value);
+            if (*value != '@')
+                sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+            return NULL;
+        }
+        ext_struc = method->v2i(method, ctx, nval);
+        if (*value != '@')
+            sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+        if (!ext_struc)
+            return NULL;
+    } else if (method->s2i) {
+        if (!(ext_struc = method->s2i(method, ctx, value)))
+            return NULL;
+    } else if (method->r2i) {
+        if (!ctx->db || !ctx->db_meth) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_CONFIG_DATABASE);
+            return NULL;
+        }
+        if (!(ext_struc = method->r2i(method, ctx, value)))
+            return NULL;
+    } else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
+        ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
+        return NULL;
+    }
+
+    ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
+    if (method->it)
+        ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
+    else
+        method->ext_free(ext_struc);
+    return ext;
+
+}
+
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+                                  int ext_nid, int crit, void *ext_struc)
+{
+    unsigned char *ext_der;
+    int ext_len;
+    ASN1_OCTET_STRING *ext_oct;
+    X509_EXTENSION *ext;
+    /* Convert internal representation to DER */
+    if (method->it) {
+        ext_der = NULL;
+        ext_len =
+            ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
+        if (ext_len < 0)
+            goto merr;
+    } else {
+        unsigned char *p;
+        ext_len = method->i2d(ext_struc, NULL);
+        if (!(ext_der = OPENSSL_malloc(ext_len)))
+            goto merr;
+        p = ext_der;
+        method->i2d(ext_struc, &p);
+    }
+    if (!(ext_oct = M_ASN1_OCTET_STRING_new()))
+        goto merr;
+    ext_oct->data = ext_der;
+    ext_oct->length = ext_len;
+
+    ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
+    if (!ext)
+        goto merr;
+    M_ASN1_OCTET_STRING_free(ext_oct);
+
+    return ext;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+
+}
+
+/* Given an internal structure, nid and critical flag create an extension */
+
+X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
+{
+    const X509V3_EXT_METHOD *method;
+    if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+        return NULL;
+    }
+    return do_ext_i2d(method, ext_nid, crit, ext_struc);
+}
+
+/* Check the extension string for critical flag */
+static int v3_check_critical(char **value)
+{
+    char *p = *value;
+    if ((strlen(p) < 9) || strncmp(p, "critical,", 9))
+        return 0;
+    p += 9;
+    while (isspace((unsigned char)*p))
+        p++;
+    *value = p;
+    return 1;
+}
+
+/* Check extension string for generic extension and return the type */
+static int v3_check_generic(char **value)
+{
+    int gen_type = 0;
+    char *p = *value;
+    if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) {
+        p += 4;
+        gen_type = 1;
+    } else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) {
+        p += 5;
+        gen_type = 2;
+    } else
+        return 0;
+
+    while (isspace((unsigned char)*p))
+        p++;
+    *value = p;
+    return gen_type;
+}
+
+/* Create a generic extension: for now just handle DER type */
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+                                            int crit, int gen_type,
+                                            X509V3_CTX *ctx)
+{
+    unsigned char *ext_der = NULL;
+    long ext_len = 0;
+    ASN1_OBJECT *obj = NULL;
+    ASN1_OCTET_STRING *oct = NULL;
+    X509_EXTENSION *extension = NULL;
+    if (!(obj = OBJ_txt2obj(ext, 0))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_NAME_ERROR);
+        ERR_add_error_data(2, "name=", ext);
+        goto err;
+    }
+
+    if (gen_type == 1)
+        ext_der = x509v3_hex_to_bytes(value, &ext_len);
+    else if (gen_type == 2)
+        ext_der = generic_asn1(value, ctx, &ext_len);
+
+    if (ext_der == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_VALUE_ERROR);
+        ERR_add_error_data(2, "value=", value);
+        goto err;
+    }
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    oct->data = ext_der;
+    oct->length = ext_len;
+    ext_der = NULL;
+
+    extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
+
+ err:
+    ASN1_OBJECT_free(obj);
+    M_ASN1_OCTET_STRING_free(oct);
+    if (ext_der)
+        OPENSSL_free(ext_der);
+    return extension;
+
+}
+
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+                                   long *ext_len)
+{
+    ASN1_TYPE *typ;
+    unsigned char *ext_der = NULL;
+    typ = ASN1_generate_v3(value, ctx);
+    if (typ == NULL)
+        return NULL;
+    *ext_len = i2d_ASN1_TYPE(typ, &ext_der);
+    ASN1_TYPE_free(typ);
+    return ext_der;
+}
+
+/*
+ * This is the main function: add a bunch of extensions based on a config
+ * file section to an extension STACK.
+ */
+
+int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
+                            STACK_OF(X509_EXTENSION) **sk)
+{
+    X509_EXTENSION *ext;
+    STACK_OF(CONF_VALUE) *nval;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(nval = NCONF_get_section(conf, section)))
+        return 0;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
+            return 0;
+        if (sk)
+            X509v3_add_ext(sk, ext, -1);
+        X509_EXTENSION_free(ext);
+    }
+    return 1;
+}
+
+/*
+ * Convenience functions to add extensions to a certificate, CRL and request
+ */
+
+int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                         X509 *cert)
+{
+    STACK_OF(X509_EXTENSION) **sk = NULL;
+    if (cert)
+        sk = &cert->cert_info->extensions;
+    return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Same as above but for a CRL */
+
+int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                             X509_CRL *crl)
+{
+    STACK_OF(X509_EXTENSION) **sk = NULL;
+    if (crl)
+        sk = &crl->crl->extensions;
+    return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Add extensions to certificate request */
+
+int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                             X509_REQ *req)
+{
+    STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
+    int i;
+    if (req)
+        sk = &extlist;
+    i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+    if (!i || !sk)
+        return i;
+    i = X509_REQ_add_extensions(req, extlist);
+    sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
+    return i;
+}
+
+/* Config database functions */
+
+char *X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
+{
+    if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+        return NULL;
+    }
+    if (ctx->db_meth->get_string)
+        return ctx->db_meth->get_string(ctx->db, name, section);
+    return NULL;
+}
+
+STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, char *section)
+{
+    if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+        return NULL;
+    }
+    if (ctx->db_meth->get_section)
+        return ctx->db_meth->get_section(ctx->db, section);
+    return NULL;
+}
+
+void X509V3_string_free(X509V3_CTX *ctx, char *str)
+{
+    if (!str)
+        return;
+    if (ctx->db_meth->free_string)
+        ctx->db_meth->free_string(ctx->db, str);
+}
+
+void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
+{
+    if (!section)
+        return;
+    if (ctx->db_meth->free_section)
+        ctx->db_meth->free_section(ctx->db, section);
+}
+
+static char *nconf_get_string(void *db, char *section, char *value)
+{
+    /* TODO(fork): this should return a const value. */
+    return (char *)NCONF_get_string(db, section, value);
+}
+
+static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
+{
+    return NCONF_get_section(db, section);
+}
+
+static const X509V3_CONF_METHOD nconf_method = {
+    nconf_get_string,
+    nconf_get_section,
+    NULL,
+    NULL
+};
+
+void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
+{
+    ctx->db_meth = &nconf_method;
+    ctx->db = conf;
+}
+
+void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
+                    X509_CRL *crl, int flags)
+{
+    ctx->issuer_cert = issuer;
+    ctx->subject_cert = subj;
+    ctx->crl = crl;
+    ctx->subject_req = req;
+    ctx->flags = flags;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c.grpc_back
new file mode 100644
index 0000000..e98d0fc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_conf.c.grpc_back	
@@ -0,0 +1,463 @@
+/* v3_conf.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* extension creation utilities */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+static int v3_check_critical(char **value);
+static int v3_check_generic(char **value);
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                    int crit, char *value);
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+                                            int crit, int type,
+                                            X509V3_CTX *ctx);
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+                                  int ext_nid, int crit, void *ext_struc);
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+                                   long *ext_len);
+/* CONF *conf:  Config file    */
+/* char *name:  Name    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
+                                 char *value)
+{
+    int crit;
+    int ext_type;
+    X509_EXTENSION *ret;
+    crit = v3_check_critical(&value);
+    if ((ext_type = v3_check_generic(&value)))
+        return v3_generic_extension(name, value, crit, ext_type, ctx);
+    ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
+    if (!ret) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_IN_EXTENSION);
+        ERR_add_error_data(4, "name=", name, ", value=", value);
+    }
+    return ret;
+}
+
+/* CONF *conf:  Config file    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                     char *value)
+{
+    int crit;
+    int ext_type;
+    crit = v3_check_critical(&value);
+    if ((ext_type = v3_check_generic(&value)))
+        return v3_generic_extension(OBJ_nid2sn(ext_nid),
+                                    value, crit, ext_type, ctx);
+    return do_ext_nconf(conf, ctx, ext_nid, crit, value);
+}
+
+/* CONF *conf:  Config file    */
+/* char *value:  Value    */
+static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
+                                    int crit, char *value)
+{
+    const X509V3_EXT_METHOD *method;
+    X509_EXTENSION *ext;
+    STACK_OF(CONF_VALUE) *nval;
+    void *ext_struc;
+    if (ext_nid == NID_undef) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME);
+        return NULL;
+    }
+    if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+        return NULL;
+    }
+    /* Now get internal extension representation based on type */
+    if (method->v2i) {
+        if (*value == '@')
+            nval = NCONF_get_section(conf, value + 1);
+        else
+            nval = X509V3_parse_list(value);
+        if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_EXTENSION_STRING);
+            ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=",
+                               value);
+            if (*value != '@')
+                sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+            return NULL;
+        }
+        ext_struc = method->v2i(method, ctx, nval);
+        if (*value != '@')
+            sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+        if (!ext_struc)
+            return NULL;
+    } else if (method->s2i) {
+        if (!(ext_struc = method->s2i(method, ctx, value)))
+            return NULL;
+    } else if (method->r2i) {
+        if (!ctx->db || !ctx->db_meth) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_CONFIG_DATABASE);
+            return NULL;
+        }
+        if (!(ext_struc = method->r2i(method, ctx, value)))
+            return NULL;
+    } else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
+        ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
+        return NULL;
+    }
+
+    ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
+    if (method->it)
+        ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
+    else
+        method->ext_free(ext_struc);
+    return ext;
+
+}
+
+static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
+                                  int ext_nid, int crit, void *ext_struc)
+{
+    unsigned char *ext_der;
+    int ext_len;
+    ASN1_OCTET_STRING *ext_oct;
+    X509_EXTENSION *ext;
+    /* Convert internal representation to DER */
+    if (method->it) {
+        ext_der = NULL;
+        ext_len =
+            ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
+        if (ext_len < 0)
+            goto merr;
+    } else {
+        unsigned char *p;
+        ext_len = method->i2d(ext_struc, NULL);
+        if (!(ext_der = OPENSSL_malloc(ext_len)))
+            goto merr;
+        p = ext_der;
+        method->i2d(ext_struc, &p);
+    }
+    if (!(ext_oct = M_ASN1_OCTET_STRING_new()))
+        goto merr;
+    ext_oct->data = ext_der;
+    ext_oct->length = ext_len;
+
+    ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
+    if (!ext)
+        goto merr;
+    M_ASN1_OCTET_STRING_free(ext_oct);
+
+    return ext;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+
+}
+
+/* Given an internal structure, nid and critical flag create an extension */
+
+X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
+{
+    const X509V3_EXT_METHOD *method;
+    if (!(method = X509V3_EXT_get_nid(ext_nid))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNKNOWN_EXTENSION);
+        return NULL;
+    }
+    return do_ext_i2d(method, ext_nid, crit, ext_struc);
+}
+
+/* Check the extension string for critical flag */
+static int v3_check_critical(char **value)
+{
+    char *p = *value;
+    if ((strlen(p) < 9) || strncmp(p, "critical,", 9))
+        return 0;
+    p += 9;
+    while (isspace((unsigned char)*p))
+        p++;
+    *value = p;
+    return 1;
+}
+
+/* Check extension string for generic extension and return the type */
+static int v3_check_generic(char **value)
+{
+    int gen_type = 0;
+    char *p = *value;
+    if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) {
+        p += 4;
+        gen_type = 1;
+    } else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) {
+        p += 5;
+        gen_type = 2;
+    } else
+        return 0;
+
+    while (isspace((unsigned char)*p))
+        p++;
+    *value = p;
+    return gen_type;
+}
+
+/* Create a generic extension: for now just handle DER type */
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+                                            int crit, int gen_type,
+                                            X509V3_CTX *ctx)
+{
+    unsigned char *ext_der = NULL;
+    long ext_len = 0;
+    ASN1_OBJECT *obj = NULL;
+    ASN1_OCTET_STRING *oct = NULL;
+    X509_EXTENSION *extension = NULL;
+    if (!(obj = OBJ_txt2obj(ext, 0))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_NAME_ERROR);
+        ERR_add_error_data(2, "name=", ext);
+        goto err;
+    }
+
+    if (gen_type == 1)
+        ext_der = x509v3_hex_to_bytes(value, &ext_len);
+    else if (gen_type == 2)
+        ext_der = generic_asn1(value, ctx, &ext_len);
+
+    if (ext_der == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_VALUE_ERROR);
+        ERR_add_error_data(2, "value=", value);
+        goto err;
+    }
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    oct->data = ext_der;
+    oct->length = ext_len;
+    ext_der = NULL;
+
+    extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
+
+ err:
+    ASN1_OBJECT_free(obj);
+    M_ASN1_OCTET_STRING_free(oct);
+    if (ext_der)
+        OPENSSL_free(ext_der);
+    return extension;
+
+}
+
+static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx,
+                                   long *ext_len)
+{
+    ASN1_TYPE *typ;
+    unsigned char *ext_der = NULL;
+    typ = ASN1_generate_v3(value, ctx);
+    if (typ == NULL)
+        return NULL;
+    *ext_len = i2d_ASN1_TYPE(typ, &ext_der);
+    ASN1_TYPE_free(typ);
+    return ext_der;
+}
+
+/*
+ * This is the main function: add a bunch of extensions based on a config
+ * file section to an extension STACK.
+ */
+
+int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
+                            STACK_OF(X509_EXTENSION) **sk)
+{
+    X509_EXTENSION *ext;
+    STACK_OF(CONF_VALUE) *nval;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(nval = NCONF_get_section(conf, section)))
+        return 0;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
+            return 0;
+        if (sk)
+            X509v3_add_ext(sk, ext, -1);
+        X509_EXTENSION_free(ext);
+    }
+    return 1;
+}
+
+/*
+ * Convenience functions to add extensions to a certificate, CRL and request
+ */
+
+int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                         X509 *cert)
+{
+    STACK_OF(X509_EXTENSION) **sk = NULL;
+    if (cert)
+        sk = &cert->cert_info->extensions;
+    return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Same as above but for a CRL */
+
+int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                             X509_CRL *crl)
+{
+    STACK_OF(X509_EXTENSION) **sk = NULL;
+    if (crl)
+        sk = &crl->crl->extensions;
+    return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+}
+
+/* Add extensions to certificate request */
+
+int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
+                             X509_REQ *req)
+{
+    STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
+    int i;
+    if (req)
+        sk = &extlist;
+    i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
+    if (!i || !sk)
+        return i;
+    i = X509_REQ_add_extensions(req, extlist);
+    sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
+    return i;
+}
+
+/* Config database functions */
+
+char *X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
+{
+    if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+        return NULL;
+    }
+    if (ctx->db_meth->get_string)
+        return ctx->db_meth->get_string(ctx->db, name, section);
+    return NULL;
+}
+
+STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, char *section)
+{
+    if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
+        return NULL;
+    }
+    if (ctx->db_meth->get_section)
+        return ctx->db_meth->get_section(ctx->db, section);
+    return NULL;
+}
+
+void X509V3_string_free(X509V3_CTX *ctx, char *str)
+{
+    if (!str)
+        return;
+    if (ctx->db_meth->free_string)
+        ctx->db_meth->free_string(ctx->db, str);
+}
+
+void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
+{
+    if (!section)
+        return;
+    if (ctx->db_meth->free_section)
+        ctx->db_meth->free_section(ctx->db, section);
+}
+
+static char *nconf_get_string(void *db, char *section, char *value)
+{
+    /* TODO(fork): this should return a const value. */
+    return (char *)NCONF_get_string(db, section, value);
+}
+
+static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
+{
+    return NCONF_get_section(db, section);
+}
+
+static const X509V3_CONF_METHOD nconf_method = {
+    nconf_get_string,
+    nconf_get_section,
+    NULL,
+    NULL
+};
+
+void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
+{
+    ctx->db_meth = &nconf_method;
+    ctx->db = conf;
+}
+
+void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
+                    X509_CRL *crl, int flags)
+{
+    ctx->issuer_cert = issuer;
+    ctx->subject_cert = subj;
+    ctx->crl = crl;
+    ctx->subject_req = req;
+    ctx->flags = flags;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c
new file mode 100644
index 0000000..c20b57e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c	
@@ -0,0 +1,503 @@
+/* v3_cpols.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "internal.h"
+#include "pcy_int.h"
+
+/* Certificate policies extension support: this one is a bit complex... */
+
+static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
+                       BIO *out, int indent);
+static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *value);
+static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
+                             int indent);
+static void print_notice(BIO *out, USERNOTICE *notice, int indent);
+static POLICYINFO *policy_section(X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org);
+static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *unot, int ia5org);
+static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);
+
+const X509V3_EXT_METHOD v3_cpols = {
+    NID_certificate_policies, 0, ASN1_ITEM_ref(CERTIFICATEPOLICIES),
+    0, 0, 0, 0,
+    0, 0,
+    0, 0,
+    (X509V3_EXT_I2R)i2r_certpol,
+    (X509V3_EXT_R2I)r2i_certpol,
+    NULL
+};
+
+ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
+ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
+
+IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
+
+ASN1_SEQUENCE(POLICYINFO) = {
+        ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
+        ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
+} ASN1_SEQUENCE_END(POLICYINFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)
+
+ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);
+
+ASN1_ADB(POLICYQUALINFO) = {
+        ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
+        ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
+} ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
+
+ASN1_SEQUENCE(POLICYQUALINFO) = {
+        ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
+        ASN1_ADB_OBJECT(POLICYQUALINFO)
+} ASN1_SEQUENCE_END(POLICYQUALINFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)
+
+ASN1_SEQUENCE(USERNOTICE) = {
+        ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
+        ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
+} ASN1_SEQUENCE_END(USERNOTICE)
+
+IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)
+
+ASN1_SEQUENCE(NOTICEREF) = {
+        ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
+        ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
+} ASN1_SEQUENCE_END(NOTICEREF)
+
+IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)
+
+static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *value)
+{
+    STACK_OF(POLICYINFO) *pols = NULL;
+    char *pstr;
+    POLICYINFO *pol;
+    ASN1_OBJECT *pobj;
+    STACK_OF(CONF_VALUE) *vals;
+    CONF_VALUE *cnf;
+    size_t i;
+    int ia5org;
+    pols = sk_POLICYINFO_new_null();
+    if (pols == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    vals = X509V3_parse_list(value);
+    if (vals == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_X509V3_LIB);
+        goto err;
+    }
+    ia5org = 0;
+    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
+        cnf = sk_CONF_VALUE_value(vals, i);
+        if (cnf->value || !cnf->name) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+        pstr = cnf->name;
+        if (!strcmp(pstr, "ia5org")) {
+            ia5org = 1;
+            continue;
+        } else if (*pstr == '@') {
+            STACK_OF(CONF_VALUE) *polsect;
+            polsect = X509V3_get_section(ctx, pstr + 1);
+            if (!polsect) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol = policy_section(ctx, polsect, ia5org);
+            X509V3_section_free(ctx, polsect);
+            if (!pol)
+                goto err;
+        } else {
+            if (!(pobj = OBJ_txt2obj(cnf->name, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol = POLICYINFO_new();
+            if (pol == NULL) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                ASN1_OBJECT_free(pobj);
+                goto err;
+            }
+            pol->policyid = pobj;
+        }
+        if (!sk_POLICYINFO_push(pols, pol)) {
+            POLICYINFO_free(pol);
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    return pols;
+ err:
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
+    return NULL;
+}
+
+static POLICYINFO *policy_section(X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org)
+{
+    size_t i;
+    CONF_VALUE *cnf;
+    POLICYINFO *pol;
+    POLICYQUALINFO *qual;
+    if (!(pol = POLICYINFO_new()))
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
+        cnf = sk_CONF_VALUE_value(polstrs, i);
+        if (!strcmp(cnf->name, "policyIdentifier")) {
+            ASN1_OBJECT *pobj;
+            if (!(pobj = OBJ_txt2obj(cnf->value, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol->policyid = pobj;
+
+        } else if (!x509v3_name_cmp(cnf->name, "CPS")) {
+            if (!pol->qualifiers)
+                pol->qualifiers = sk_POLICYQUALINFO_new_null();
+            if (!(qual = POLICYQUALINFO_new()))
+                goto merr;
+            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
+                goto merr;
+            /* TODO(fork): const correctness */
+            qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_cps);
+            if (qual->pqualid == NULL) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
+                goto err;
+            }
+            qual->d.cpsuri = M_ASN1_IA5STRING_new();
+            if (qual->d.cpsuri == NULL) {
+                goto err;
+            }
+            if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!x509v3_name_cmp(cnf->name, "userNotice")) {
+            STACK_OF(CONF_VALUE) *unot;
+            if (*cnf->value != '@') {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXPECTED_A_SECTION_NAME);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            unot = X509V3_get_section(ctx, cnf->value + 1);
+            if (!unot) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            qual = notice_section(ctx, unot, ia5org);
+            X509V3_section_free(ctx, unot);
+            if (!qual)
+                goto err;
+            if (!pol->qualifiers)
+                pol->qualifiers = sk_POLICYQUALINFO_new_null();
+            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
+                goto merr;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
+
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+    if (!pol->policyid) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_POLICY_IDENTIFIER);
+        goto err;
+    }
+
+    return pol;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    POLICYINFO_free(pol);
+    return NULL;
+
+}
+
+static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *unot, int ia5org)
+{
+    size_t i;
+    int ret;
+    CONF_VALUE *cnf;
+    USERNOTICE *not;
+    POLICYQUALINFO *qual;
+    if (!(qual = POLICYQUALINFO_new()))
+        goto merr;
+    /* TODO(fork): const correctness */
+    qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_unotice);
+    if (qual->pqualid == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
+    if (!(not = USERNOTICE_new()))
+        goto merr;
+    qual->d.usernotice = not;
+    for (i = 0; i < sk_CONF_VALUE_num(unot); i++) {
+        cnf = sk_CONF_VALUE_value(unot, i);
+        if (!strcmp(cnf->name, "explicitText")) {
+            not->exptext = M_ASN1_VISIBLESTRING_new();
+            if (not->exptext == NULL)
+                goto merr;
+            if (!ASN1_STRING_set(not->exptext, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!strcmp(cnf->name, "organization")) {
+            NOTICEREF *nref;
+            if (!not->noticeref) {
+                if (!(nref = NOTICEREF_new()))
+                    goto merr;
+                not->noticeref = nref;
+            } else
+                nref = not->noticeref;
+            if (ia5org)
+                nref->organization->type = V_ASN1_IA5STRING;
+            else
+                nref->organization->type = V_ASN1_VISIBLESTRING;
+            if (!ASN1_STRING_set(nref->organization, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!strcmp(cnf->name, "noticeNumbers")) {
+            NOTICEREF *nref;
+            STACK_OF(CONF_VALUE) *nos;
+            if (!not->noticeref) {
+                if (!(nref = NOTICEREF_new()))
+                    goto merr;
+                not->noticeref = nref;
+            } else
+                nref = not->noticeref;
+            nos = X509V3_parse_list(cnf->value);
+            if (!nos || !sk_CONF_VALUE_num(nos)) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBERS);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            ret = nref_nos(nref->noticenos, nos);
+            sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
+            if (!ret)
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+
+    if (not->noticeref &&
+        (!not->noticeref->noticenos || !not->noticeref->organization)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
+        goto err;
+    }
+
+    return qual;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    POLICYQUALINFO_free(qual);
+    return NULL;
+}
+
+static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
+{
+    CONF_VALUE *cnf;
+    ASN1_INTEGER *aint;
+
+    size_t i;
+
+    for (i = 0; i < sk_CONF_VALUE_num(nos); i++) {
+        cnf = sk_CONF_VALUE_value(nos, i);
+        if (!(aint = s2i_ASN1_INTEGER(NULL, cnf->name))) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBER);
+            goto err;
+        }
+        if (!sk_ASN1_INTEGER_push(nnums, aint))
+            goto merr;
+    }
+    return 1;
+
+ merr:
+    ASN1_INTEGER_free(aint);
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    return 0;
+}
+
+static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
+                       BIO *out, int indent)
+{
+    size_t i;
+    POLICYINFO *pinfo;
+    /* First print out the policy OIDs */
+    for (i = 0; i < sk_POLICYINFO_num(pol); i++) {
+        pinfo = sk_POLICYINFO_value(pol, i);
+        BIO_printf(out, "%*sPolicy: ", indent, "");
+        i2a_ASN1_OBJECT(out, pinfo->policyid);
+        BIO_puts(out, "\n");
+        if (pinfo->qualifiers)
+            print_qualifiers(out, pinfo->qualifiers, indent + 2);
+    }
+    return 1;
+}
+
+static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
+                             int indent)
+{
+    POLICYQUALINFO *qualinfo;
+    size_t i;
+    for (i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
+        qualinfo = sk_POLICYQUALINFO_value(quals, i);
+        switch (OBJ_obj2nid(qualinfo->pqualid)) {
+        case NID_id_qt_cps:
+            BIO_printf(out, "%*sCPS: %s\n", indent, "",
+                       qualinfo->d.cpsuri->data);
+            break;
+
+        case NID_id_qt_unotice:
+            BIO_printf(out, "%*sUser Notice:\n", indent, "");
+            print_notice(out, qualinfo->d.usernotice, indent + 2);
+            break;
+
+        default:
+            BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
+
+            i2a_ASN1_OBJECT(out, qualinfo->pqualid);
+            BIO_puts(out, "\n");
+            break;
+        }
+    }
+}
+
+static void print_notice(BIO *out, USERNOTICE *notice, int indent)
+{
+    size_t i;
+    if (notice->noticeref) {
+        NOTICEREF *ref;
+        ref = notice->noticeref;
+        BIO_printf(out, "%*sOrganization: %s\n", indent, "",
+                   ref->organization->data);
+        BIO_printf(out, "%*sNumber%s: ", indent, "",
+                   sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
+        for (i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
+            ASN1_INTEGER *num;
+            char *tmp;
+            num = sk_ASN1_INTEGER_value(ref->noticenos, i);
+            if (i)
+                BIO_puts(out, ", ");
+            if (num == NULL)
+                BIO_puts(out, "(null)");
+            else {
+                tmp = i2s_ASN1_INTEGER(NULL, num);
+                if (tmp == NULL)
+                    return;
+                BIO_puts(out, tmp);
+                OPENSSL_free(tmp);
+            }
+        }
+        BIO_puts(out, "\n");
+    }
+    if (notice->exptext)
+        BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
+                   notice->exptext->data);
+}
+
+void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
+{
+    const X509_POLICY_DATA *dat = node->data;
+
+    BIO_printf(out, "%*sPolicy: ", indent, "");
+
+    i2a_ASN1_OBJECT(out, dat->valid_policy);
+    BIO_puts(out, "\n");
+    BIO_printf(out, "%*s%s\n", indent + 2, "",
+               node_data_critical(dat) ? "Critical" : "Non Critical");
+    if (dat->qualifier_set)
+        print_qualifiers(out, dat->qualifier_set, indent + 2);
+    else
+        BIO_printf(out, "%*sNo Qualifiers\n", indent + 2, "");
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c.grpc_back
new file mode 100644
index 0000000..18d260b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_cpols.c.grpc_back	
@@ -0,0 +1,503 @@
+/* v3_cpols.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/stack.h>
+#include <openssl/x509v3.h>
+
+#include "internal.h"
+#include "pcy_int.h"
+
+/* Certificate policies extension support: this one is a bit complex... */
+
+static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
+                       BIO *out, int indent);
+static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *value);
+static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
+                             int indent);
+static void print_notice(BIO *out, USERNOTICE *notice, int indent);
+static POLICYINFO *policy_section(X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org);
+static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *unot, int ia5org);
+static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos);
+
+const X509V3_EXT_METHOD v3_cpols = {
+    NID_certificate_policies, 0, ASN1_ITEM_ref(CERTIFICATEPOLICIES),
+    0, 0, 0, 0,
+    0, 0,
+    0, 0,
+    (X509V3_EXT_I2R)i2r_certpol,
+    (X509V3_EXT_R2I)r2i_certpol,
+    NULL
+};
+
+ASN1_ITEM_TEMPLATE(CERTIFICATEPOLICIES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CERTIFICATEPOLICIES, POLICYINFO)
+ASN1_ITEM_TEMPLATE_END(CERTIFICATEPOLICIES)
+
+IMPLEMENT_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
+
+ASN1_SEQUENCE(POLICYINFO) = {
+        ASN1_SIMPLE(POLICYINFO, policyid, ASN1_OBJECT),
+        ASN1_SEQUENCE_OF_OPT(POLICYINFO, qualifiers, POLICYQUALINFO)
+} ASN1_SEQUENCE_END(POLICYINFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(POLICYINFO)
+
+ASN1_ADB_TEMPLATE(policydefault) = ASN1_SIMPLE(POLICYQUALINFO, d.other, ASN1_ANY);
+
+ASN1_ADB(POLICYQUALINFO) = {
+        ADB_ENTRY(NID_id_qt_cps, ASN1_SIMPLE(POLICYQUALINFO, d.cpsuri, ASN1_IA5STRING)),
+        ADB_ENTRY(NID_id_qt_unotice, ASN1_SIMPLE(POLICYQUALINFO, d.usernotice, USERNOTICE))
+} ASN1_ADB_END(POLICYQUALINFO, 0, pqualid, 0, &policydefault_tt, NULL);
+
+ASN1_SEQUENCE(POLICYQUALINFO) = {
+        ASN1_SIMPLE(POLICYQUALINFO, pqualid, ASN1_OBJECT),
+        ASN1_ADB_OBJECT(POLICYQUALINFO)
+} ASN1_SEQUENCE_END(POLICYQUALINFO)
+
+IMPLEMENT_ASN1_FUNCTIONS(POLICYQUALINFO)
+
+ASN1_SEQUENCE(USERNOTICE) = {
+        ASN1_OPT(USERNOTICE, noticeref, NOTICEREF),
+        ASN1_OPT(USERNOTICE, exptext, DISPLAYTEXT)
+} ASN1_SEQUENCE_END(USERNOTICE)
+
+IMPLEMENT_ASN1_FUNCTIONS(USERNOTICE)
+
+ASN1_SEQUENCE(NOTICEREF) = {
+        ASN1_SIMPLE(NOTICEREF, organization, DISPLAYTEXT),
+        ASN1_SEQUENCE_OF(NOTICEREF, noticenos, ASN1_INTEGER)
+} ASN1_SEQUENCE_END(NOTICEREF)
+
+IMPLEMENT_ASN1_FUNCTIONS(NOTICEREF)
+
+static STACK_OF(POLICYINFO) *r2i_certpol(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *value)
+{
+    STACK_OF(POLICYINFO) *pols = NULL;
+    char *pstr;
+    POLICYINFO *pol;
+    ASN1_OBJECT *pobj;
+    STACK_OF(CONF_VALUE) *vals;
+    CONF_VALUE *cnf;
+    size_t i;
+    int ia5org;
+    pols = sk_POLICYINFO_new_null();
+    if (pols == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    vals = X509V3_parse_list(value);
+    if (vals == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_X509V3_LIB);
+        goto err;
+    }
+    ia5org = 0;
+    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
+        cnf = sk_CONF_VALUE_value(vals, i);
+        if (cnf->value || !cnf->name) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_POLICY_IDENTIFIER);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+        pstr = cnf->name;
+        if (!strcmp(pstr, "ia5org")) {
+            ia5org = 1;
+            continue;
+        } else if (*pstr == '@') {
+            STACK_OF(CONF_VALUE) *polsect;
+            polsect = X509V3_get_section(ctx, pstr + 1);
+            if (!polsect) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol = policy_section(ctx, polsect, ia5org);
+            X509V3_section_free(ctx, polsect);
+            if (!pol)
+                goto err;
+        } else {
+            if (!(pobj = OBJ_txt2obj(cnf->name, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol = POLICYINFO_new();
+            if (pol == NULL) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                ASN1_OBJECT_free(pobj);
+                goto err;
+            }
+            pol->policyid = pobj;
+        }
+        if (!sk_POLICYINFO_push(pols, pol)) {
+            POLICYINFO_free(pol);
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    return pols;
+ err:
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    sk_POLICYINFO_pop_free(pols, POLICYINFO_free);
+    return NULL;
+}
+
+static POLICYINFO *policy_section(X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *polstrs, int ia5org)
+{
+    size_t i;
+    CONF_VALUE *cnf;
+    POLICYINFO *pol;
+    POLICYQUALINFO *qual;
+    if (!(pol = POLICYINFO_new()))
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(polstrs); i++) {
+        cnf = sk_CONF_VALUE_value(polstrs, i);
+        if (!strcmp(cnf->name, "policyIdentifier")) {
+            ASN1_OBJECT *pobj;
+            if (!(pobj = OBJ_txt2obj(cnf->value, 0))) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            pol->policyid = pobj;
+
+        } else if (!x509v3_name_cmp(cnf->name, "CPS")) {
+            if (!pol->qualifiers)
+                pol->qualifiers = sk_POLICYQUALINFO_new_null();
+            if (!(qual = POLICYQUALINFO_new()))
+                goto merr;
+            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
+                goto merr;
+            /* TODO(fork): const correctness */
+            qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_cps);
+            if (qual->pqualid == NULL) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
+                goto err;
+            }
+            qual->d.cpsuri = M_ASN1_IA5STRING_new();
+            if (qual->d.cpsuri == NULL) {
+                goto err;
+            }
+            if (!ASN1_STRING_set(qual->d.cpsuri, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!x509v3_name_cmp(cnf->name, "userNotice")) {
+            STACK_OF(CONF_VALUE) *unot;
+            if (*cnf->value != '@') {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXPECTED_A_SECTION_NAME);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            unot = X509V3_get_section(ctx, cnf->value + 1);
+            if (!unot) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            qual = notice_section(ctx, unot, ia5org);
+            X509V3_section_free(ctx, unot);
+            if (!qual)
+                goto err;
+            if (!pol->qualifiers)
+                pol->qualifiers = sk_POLICYQUALINFO_new_null();
+            if (!sk_POLICYQUALINFO_push(pol->qualifiers, qual))
+                goto merr;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
+
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+    if (!pol->policyid) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_POLICY_IDENTIFIER);
+        goto err;
+    }
+
+    return pol;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    POLICYINFO_free(pol);
+    return NULL;
+
+}
+
+static POLICYQUALINFO *notice_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *unot, int ia5org)
+{
+    size_t i;
+    int ret;
+    CONF_VALUE *cnf;
+    USERNOTICE *not;
+    POLICYQUALINFO *qual;
+    if (!(qual = POLICYQUALINFO_new()))
+        goto merr;
+    /* TODO(fork): const correctness */
+    qual->pqualid = (ASN1_OBJECT *)OBJ_nid2obj(NID_id_qt_unotice);
+    if (qual->pqualid == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_INTERNAL_ERROR);
+        goto err;
+    }
+    if (!(not = USERNOTICE_new()))
+        goto merr;
+    qual->d.usernotice = not;
+    for (i = 0; i < sk_CONF_VALUE_num(unot); i++) {
+        cnf = sk_CONF_VALUE_value(unot, i);
+        if (!strcmp(cnf->name, "explicitText")) {
+            not->exptext = M_ASN1_VISIBLESTRING_new();
+            if (not->exptext == NULL)
+                goto merr;
+            if (!ASN1_STRING_set(not->exptext, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!strcmp(cnf->name, "organization")) {
+            NOTICEREF *nref;
+            if (!not->noticeref) {
+                if (!(nref = NOTICEREF_new()))
+                    goto merr;
+                not->noticeref = nref;
+            } else
+                nref = not->noticeref;
+            if (ia5org)
+                nref->organization->type = V_ASN1_IA5STRING;
+            else
+                nref->organization->type = V_ASN1_VISIBLESTRING;
+            if (!ASN1_STRING_set(nref->organization, cnf->value,
+                                 strlen(cnf->value)))
+                goto merr;
+        } else if (!strcmp(cnf->name, "noticeNumbers")) {
+            NOTICEREF *nref;
+            STACK_OF(CONF_VALUE) *nos;
+            if (!not->noticeref) {
+                if (!(nref = NOTICEREF_new()))
+                    goto merr;
+                not->noticeref = nref;
+            } else
+                nref = not->noticeref;
+            nos = X509V3_parse_list(cnf->value);
+            if (!nos || !sk_CONF_VALUE_num(nos)) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBERS);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            ret = nref_nos(nref->noticenos, nos);
+            sk_CONF_VALUE_pop_free(nos, X509V3_conf_free);
+            if (!ret)
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OPTION);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+
+    if (not->noticeref &&
+        (!not->noticeref->noticenos || !not->noticeref->organization)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NEED_ORGANIZATION_AND_NUMBERS);
+        goto err;
+    }
+
+    return qual;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    POLICYQUALINFO_free(qual);
+    return NULL;
+}
+
+static int nref_nos(STACK_OF(ASN1_INTEGER) *nnums, STACK_OF(CONF_VALUE) *nos)
+{
+    CONF_VALUE *cnf;
+    ASN1_INTEGER *aint;
+
+    size_t i;
+
+    for (i = 0; i < sk_CONF_VALUE_num(nos); i++) {
+        cnf = sk_CONF_VALUE_value(nos, i);
+        if (!(aint = s2i_ASN1_INTEGER(NULL, cnf->name))) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NUMBER);
+            goto err;
+        }
+        if (!sk_ASN1_INTEGER_push(nnums, aint))
+            goto merr;
+    }
+    return 1;
+
+ merr:
+    ASN1_INTEGER_free(aint);
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+
+ err:
+    return 0;
+}
+
+static int i2r_certpol(X509V3_EXT_METHOD *method, STACK_OF(POLICYINFO) *pol,
+                       BIO *out, int indent)
+{
+    size_t i;
+    POLICYINFO *pinfo;
+    /* First print out the policy OIDs */
+    for (i = 0; i < sk_POLICYINFO_num(pol); i++) {
+        pinfo = sk_POLICYINFO_value(pol, i);
+        BIO_printf(out, "%*sPolicy: ", indent, "");
+        i2a_ASN1_OBJECT(out, pinfo->policyid);
+        BIO_puts(out, "\n");
+        if (pinfo->qualifiers)
+            print_qualifiers(out, pinfo->qualifiers, indent + 2);
+    }
+    return 1;
+}
+
+static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
+                             int indent)
+{
+    POLICYQUALINFO *qualinfo;
+    size_t i;
+    for (i = 0; i < sk_POLICYQUALINFO_num(quals); i++) {
+        qualinfo = sk_POLICYQUALINFO_value(quals, i);
+        switch (OBJ_obj2nid(qualinfo->pqualid)) {
+        case NID_id_qt_cps:
+            BIO_printf(out, "%*sCPS: %s\n", indent, "",
+                       qualinfo->d.cpsuri->data);
+            break;
+
+        case NID_id_qt_unotice:
+            BIO_printf(out, "%*sUser Notice:\n", indent, "");
+            print_notice(out, qualinfo->d.usernotice, indent + 2);
+            break;
+
+        default:
+            BIO_printf(out, "%*sUnknown Qualifier: ", indent + 2, "");
+
+            i2a_ASN1_OBJECT(out, qualinfo->pqualid);
+            BIO_puts(out, "\n");
+            break;
+        }
+    }
+}
+
+static void print_notice(BIO *out, USERNOTICE *notice, int indent)
+{
+    size_t i;
+    if (notice->noticeref) {
+        NOTICEREF *ref;
+        ref = notice->noticeref;
+        BIO_printf(out, "%*sOrganization: %s\n", indent, "",
+                   ref->organization->data);
+        BIO_printf(out, "%*sNumber%s: ", indent, "",
+                   sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
+        for (i = 0; i < sk_ASN1_INTEGER_num(ref->noticenos); i++) {
+            ASN1_INTEGER *num;
+            char *tmp;
+            num = sk_ASN1_INTEGER_value(ref->noticenos, i);
+            if (i)
+                BIO_puts(out, ", ");
+            if (num == NULL)
+                BIO_puts(out, "(null)");
+            else {
+                tmp = i2s_ASN1_INTEGER(NULL, num);
+                if (tmp == NULL)
+                    return;
+                BIO_puts(out, tmp);
+                OPENSSL_free(tmp);
+            }
+        }
+        BIO_puts(out, "\n");
+    }
+    if (notice->exptext)
+        BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
+                   notice->exptext->data);
+}
+
+void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent)
+{
+    const X509_POLICY_DATA *dat = node->data;
+
+    BIO_printf(out, "%*sPolicy: ", indent, "");
+
+    i2a_ASN1_OBJECT(out, dat->valid_policy);
+    BIO_puts(out, "\n");
+    BIO_printf(out, "%*s%s\n", indent + 2, "",
+               node_data_critical(dat) ? "Critical" : "Non Critical");
+    if (dat->qualifier_set)
+        print_qualifiers(out, dat->qualifier_set, indent + 2);
+    else
+        BIO_printf(out, "%*sNo Qualifiers\n", indent + 2, "");
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c
new file mode 100644
index 0000000..d0c64cf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c	
@@ -0,0 +1,561 @@
+/* v3_crld.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent);
+
+const X509V3_EXT_METHOD v3_crld = {
+    NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_crld,
+    i2r_crldp, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_freshest_crl = {
+    NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_crld,
+    i2r_crldp, 0,
+    NULL
+};
+
+static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx,
+                                                    char *sect)
+{
+    STACK_OF(CONF_VALUE) *gnsect;
+    STACK_OF(GENERAL_NAME) *gens;
+    if (*sect == '@')
+        gnsect = X509V3_get_section(ctx, sect + 1);
+    else
+        gnsect = X509V3_parse_list(sect);
+    if (!gnsect) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+        return NULL;
+    }
+    gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
+    if (*sect == '@')
+        X509V3_section_free(ctx, gnsect);
+    else
+        sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
+    return gens;
+}
+
+static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
+                               CONF_VALUE *cnf)
+{
+    STACK_OF(GENERAL_NAME) *fnm = NULL;
+    STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
+    if (!strncmp(cnf->name, "fullname", 9)) {
+        fnm = gnames_from_sectname(ctx, cnf->value);
+        if (!fnm)
+            goto err;
+    } else if (!strcmp(cnf->name, "relativename")) {
+        int ret;
+        STACK_OF(CONF_VALUE) *dnsect;
+        X509_NAME *nm;
+        nm = X509_NAME_new();
+        if (!nm)
+            return -1;
+        dnsect = X509V3_get_section(ctx, cnf->value);
+        if (!dnsect) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+            return -1;
+        }
+        ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
+        X509V3_section_free(ctx, dnsect);
+        rnm = nm->entries;
+        nm->entries = NULL;
+        X509_NAME_free(nm);
+        if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
+            goto err;
+        /*
+         * Since its a name fragment can't have more than one RDNSequence
+         */
+        if (sk_X509_NAME_ENTRY_value(rnm,
+                                     sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_MULTIPLE_RDNS);
+            goto err;
+        }
+    } else
+        return 0;
+
+    if (*pdp) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_DISTPOINT_ALREADY_SET);
+        goto err;
+    }
+
+    *pdp = DIST_POINT_NAME_new();
+    if (!*pdp)
+        goto err;
+    if (fnm) {
+        (*pdp)->type = 0;
+        (*pdp)->name.fullname = fnm;
+    } else {
+        (*pdp)->type = 1;
+        (*pdp)->name.relativename = rnm;
+    }
+
+    return 1;
+
+ err:
+    if (fnm)
+        sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
+    if (rnm)
+        sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
+    return -1;
+}
+
+static const BIT_STRING_BITNAME reason_flags[] = {
+    {0, "Unused", "unused"},
+    {1, "Key Compromise", "keyCompromise"},
+    {2, "CA Compromise", "CACompromise"},
+    {3, "Affiliation Changed", "affiliationChanged"},
+    {4, "Superseded", "superseded"},
+    {5, "Cessation Of Operation", "cessationOfOperation"},
+    {6, "Certificate Hold", "certificateHold"},
+    {7, "Privilege Withdrawn", "privilegeWithdrawn"},
+    {8, "AA Compromise", "AACompromise"},
+    {-1, NULL, NULL}
+};
+
+static int set_reasons(ASN1_BIT_STRING **preas, char *value)
+{
+    STACK_OF(CONF_VALUE) *rsk = NULL;
+    const BIT_STRING_BITNAME *pbn;
+    const char *bnam;
+    size_t i;
+    int ret = 0;
+    rsk = X509V3_parse_list(value);
+    if (!rsk)
+        return 0;
+    if (*preas)
+        return 0;
+    for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
+        bnam = sk_CONF_VALUE_value(rsk, i)->name;
+        if (!*preas) {
+            *preas = ASN1_BIT_STRING_new();
+            if (!*preas)
+                goto err;
+        }
+        for (pbn = reason_flags; pbn->lname; pbn++) {
+            if (!strcmp(pbn->sname, bnam)) {
+                if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
+                    goto err;
+                break;
+            }
+        }
+        if (!pbn->lname)
+            goto err;
+    }
+    ret = 1;
+
+ err:
+    sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
+    return ret;
+}
+
+static int print_reasons(BIO *out, const char *rname,
+                         ASN1_BIT_STRING *rflags, int indent)
+{
+    int first = 1;
+    const BIT_STRING_BITNAME *pbn;
+    BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
+    for (pbn = reason_flags; pbn->lname; pbn++) {
+        if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
+            if (first)
+                first = 0;
+            else
+                BIO_puts(out, ", ");
+            BIO_puts(out, pbn->lname);
+        }
+    }
+    if (first)
+        BIO_puts(out, "<EMPTY>\n");
+    else
+        BIO_puts(out, "\n");
+    return 1;
+}
+
+static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval)
+{
+    size_t i;
+    CONF_VALUE *cnf;
+    DIST_POINT *point = NULL;
+    point = DIST_POINT_new();
+    if (!point)
+        goto err;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        int ret;
+        cnf = sk_CONF_VALUE_value(nval, i);
+        ret = set_dist_point_name(&point->distpoint, ctx, cnf);
+        if (ret > 0)
+            continue;
+        if (ret < 0)
+            goto err;
+        if (!strcmp(cnf->name, "reasons")) {
+            if (!set_reasons(&point->reasons, cnf->value))
+                goto err;
+        } else if (!strcmp(cnf->name, "CRLissuer")) {
+            point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
+            if (!point->CRLissuer)
+                goto err;
+        }
+    }
+
+    return point;
+
+ err:
+    if (point)
+        DIST_POINT_free(point);
+    return NULL;
+}
+
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    STACK_OF(DIST_POINT) *crld = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gen = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(crld = sk_DIST_POINT_new_null()))
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        DIST_POINT *point;
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!cnf->value) {
+            STACK_OF(CONF_VALUE) *dpsect;
+            dpsect = X509V3_get_section(ctx, cnf->name);
+            if (!dpsect)
+                goto err;
+            point = crldp_from_section(ctx, dpsect);
+            X509V3_section_free(ctx, dpsect);
+            if (!point)
+                goto err;
+            if (!sk_DIST_POINT_push(crld, point)) {
+                DIST_POINT_free(point);
+                goto merr;
+            }
+        } else {
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            if (!(gens = GENERAL_NAMES_new()))
+                goto merr;
+            if (!sk_GENERAL_NAME_push(gens, gen))
+                goto merr;
+            gen = NULL;
+            if (!(point = DIST_POINT_new()))
+                goto merr;
+            if (!sk_DIST_POINT_push(crld, point)) {
+                DIST_POINT_free(point);
+                goto merr;
+            }
+            if (!(point->distpoint = DIST_POINT_NAME_new()))
+                goto merr;
+            point->distpoint->name.fullname = gens;
+            point->distpoint->type = 0;
+            gens = NULL;
+        }
+    }
+    return crld;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    GENERAL_NAME_free(gen);
+    GENERAL_NAMES_free(gens);
+    sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
+    return NULL;
+}
+
+IMPLEMENT_ASN1_SET_OF(DIST_POINT)
+
+static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                  void *exarg)
+{
+    DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
+
+    switch (operation) {
+    case ASN1_OP_NEW_POST:
+        dpn->dpname = NULL;
+        break;
+
+    case ASN1_OP_FREE_POST:
+        if (dpn->dpname)
+            X509_NAME_free(dpn->dpname);
+        break;
+    }
+    return 1;
+}
+
+
+ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
+        ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
+        ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
+} ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
+
+
+IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
+
+ASN1_SEQUENCE(DIST_POINT) = {
+        ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
+        ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
+        ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
+} ASN1_SEQUENCE_END(DIST_POINT)
+
+IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
+
+ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
+ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
+
+IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+
+ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
+        ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
+} ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
+
+IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent);
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval);
+
+const X509V3_EXT_METHOD v3_idp = {
+    NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(ISSUING_DIST_POINT),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_idp,
+    i2r_idp, 0,
+    NULL
+};
+
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval)
+{
+    ISSUING_DIST_POINT *idp = NULL;
+    CONF_VALUE *cnf;
+    char *name, *val;
+    size_t i;
+    int ret;
+    idp = ISSUING_DIST_POINT_new();
+    if (!idp)
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        name = cnf->name;
+        val = cnf->value;
+        ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
+        if (ret > 0)
+            continue;
+        if (ret < 0)
+            goto err;
+        if (!strcmp(name, "onlyuser")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
+                goto err;
+        } else if (!strcmp(name, "onlyCA")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
+                goto err;
+        } else if (!strcmp(name, "onlyAA")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
+                goto err;
+        } else if (!strcmp(name, "indirectCRL")) {
+            if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
+                goto err;
+        } else if (!strcmp(name, "onlysomereasons")) {
+            if (!set_reasons(&idp->onlysomereasons, val))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+    return idp;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    ISSUING_DIST_POINT_free(idp);
+    return NULL;
+}
+
+static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
+{
+    size_t i;
+    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+        BIO_printf(out, "%*s", indent + 2, "");
+        GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
+        BIO_puts(out, "\n");
+    }
+    return 1;
+}
+
+static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
+{
+    if (dpn->type == 0) {
+        BIO_printf(out, "%*sFull Name:\n", indent, "");
+        print_gens(out, dpn->name.fullname, indent);
+    } else {
+        X509_NAME ntmp;
+        ntmp.entries = dpn->name.relativename;
+        BIO_printf(out, "%*sRelative Name:\n%*s", indent, "", indent + 2, "");
+        X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
+        BIO_puts(out, "\n");
+    }
+    return 1;
+}
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent)
+{
+    ISSUING_DIST_POINT *idp = pidp;
+    if (idp->distpoint)
+        print_distpoint(out, idp->distpoint, indent);
+    if (idp->onlyuser > 0)
+        BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
+    if (idp->onlyCA > 0)
+        BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
+    if (idp->indirectCRL > 0)
+        BIO_printf(out, "%*sIndirect CRL\n", indent, "");
+    if (idp->onlysomereasons)
+        print_reasons(out, "Only Some Reasons", idp->onlysomereasons, indent);
+    if (idp->onlyattr > 0)
+        BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
+    if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
+        && (idp->indirectCRL <= 0) && !idp->onlysomereasons
+        && (idp->onlyattr <= 0))
+        BIO_printf(out, "%*s<EMPTY>\n", indent, "");
+
+    return 1;
+}
+
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent)
+{
+    STACK_OF(DIST_POINT) *crld = pcrldp;
+    DIST_POINT *point;
+    size_t i;
+    for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
+        BIO_puts(out, "\n");
+        point = sk_DIST_POINT_value(crld, i);
+        if (point->distpoint)
+            print_distpoint(out, point->distpoint, indent);
+        if (point->reasons)
+            print_reasons(out, "Reasons", point->reasons, indent);
+        if (point->CRLissuer) {
+            BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
+            print_gens(out, point->CRLissuer, indent);
+        }
+    }
+    return 1;
+}
+
+int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
+{
+    size_t i;
+    STACK_OF(X509_NAME_ENTRY) *frag;
+    X509_NAME_ENTRY *ne;
+    if (!dpn || (dpn->type != 1))
+        return 1;
+    frag = dpn->name.relativename;
+    dpn->dpname = X509_NAME_dup(iname);
+    if (!dpn->dpname)
+        return 0;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++) {
+        ne = sk_X509_NAME_ENTRY_value(frag, i);
+        if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1)) {
+            X509_NAME_free(dpn->dpname);
+            dpn->dpname = NULL;
+            return 0;
+        }
+    }
+    /* generate cached encoding of name */
+    if (i2d_X509_NAME(dpn->dpname, NULL) < 0) {
+        X509_NAME_free(dpn->dpname);
+        dpn->dpname = NULL;
+        return 0;
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c.grpc_back
new file mode 100644
index 0000000..c93c449
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_crld.c.grpc_back	
@@ -0,0 +1,561 @@
+/* v3_crld.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent);
+
+const X509V3_EXT_METHOD v3_crld = {
+    NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_crld,
+    i2r_crldp, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_freshest_crl = {
+    NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_crld,
+    i2r_crldp, 0,
+    NULL
+};
+
+static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx,
+                                                    char *sect)
+{
+    STACK_OF(CONF_VALUE) *gnsect;
+    STACK_OF(GENERAL_NAME) *gens;
+    if (*sect == '@')
+        gnsect = X509V3_get_section(ctx, sect + 1);
+    else
+        gnsect = X509V3_parse_list(sect);
+    if (!gnsect) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+        return NULL;
+    }
+    gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
+    if (*sect == '@')
+        X509V3_section_free(ctx, gnsect);
+    else
+        sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
+    return gens;
+}
+
+static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
+                               CONF_VALUE *cnf)
+{
+    STACK_OF(GENERAL_NAME) *fnm = NULL;
+    STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
+    if (!strncmp(cnf->name, "fullname", 9)) {
+        fnm = gnames_from_sectname(ctx, cnf->value);
+        if (!fnm)
+            goto err;
+    } else if (!strcmp(cnf->name, "relativename")) {
+        int ret;
+        STACK_OF(CONF_VALUE) *dnsect;
+        X509_NAME *nm;
+        nm = X509_NAME_new();
+        if (!nm)
+            return -1;
+        dnsect = X509V3_get_section(ctx, cnf->value);
+        if (!dnsect) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
+            return -1;
+        }
+        ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
+        X509V3_section_free(ctx, dnsect);
+        rnm = nm->entries;
+        nm->entries = NULL;
+        X509_NAME_free(nm);
+        if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
+            goto err;
+        /*
+         * Since its a name fragment can't have more than one RDNSequence
+         */
+        if (sk_X509_NAME_ENTRY_value(rnm,
+                                     sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_MULTIPLE_RDNS);
+            goto err;
+        }
+    } else
+        return 0;
+
+    if (*pdp) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_DISTPOINT_ALREADY_SET);
+        goto err;
+    }
+
+    *pdp = DIST_POINT_NAME_new();
+    if (!*pdp)
+        goto err;
+    if (fnm) {
+        (*pdp)->type = 0;
+        (*pdp)->name.fullname = fnm;
+    } else {
+        (*pdp)->type = 1;
+        (*pdp)->name.relativename = rnm;
+    }
+
+    return 1;
+
+ err:
+    if (fnm)
+        sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
+    if (rnm)
+        sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
+    return -1;
+}
+
+static const BIT_STRING_BITNAME reason_flags[] = {
+    {0, "Unused", "unused"},
+    {1, "Key Compromise", "keyCompromise"},
+    {2, "CA Compromise", "CACompromise"},
+    {3, "Affiliation Changed", "affiliationChanged"},
+    {4, "Superseded", "superseded"},
+    {5, "Cessation Of Operation", "cessationOfOperation"},
+    {6, "Certificate Hold", "certificateHold"},
+    {7, "Privilege Withdrawn", "privilegeWithdrawn"},
+    {8, "AA Compromise", "AACompromise"},
+    {-1, NULL, NULL}
+};
+
+static int set_reasons(ASN1_BIT_STRING **preas, char *value)
+{
+    STACK_OF(CONF_VALUE) *rsk = NULL;
+    const BIT_STRING_BITNAME *pbn;
+    const char *bnam;
+    size_t i;
+    int ret = 0;
+    rsk = X509V3_parse_list(value);
+    if (!rsk)
+        return 0;
+    if (*preas)
+        return 0;
+    for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
+        bnam = sk_CONF_VALUE_value(rsk, i)->name;
+        if (!*preas) {
+            *preas = ASN1_BIT_STRING_new();
+            if (!*preas)
+                goto err;
+        }
+        for (pbn = reason_flags; pbn->lname; pbn++) {
+            if (!strcmp(pbn->sname, bnam)) {
+                if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
+                    goto err;
+                break;
+            }
+        }
+        if (!pbn->lname)
+            goto err;
+    }
+    ret = 1;
+
+ err:
+    sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
+    return ret;
+}
+
+static int print_reasons(BIO *out, const char *rname,
+                         ASN1_BIT_STRING *rflags, int indent)
+{
+    int first = 1;
+    const BIT_STRING_BITNAME *pbn;
+    BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
+    for (pbn = reason_flags; pbn->lname; pbn++) {
+        if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
+            if (first)
+                first = 0;
+            else
+                BIO_puts(out, ", ");
+            BIO_puts(out, pbn->lname);
+        }
+    }
+    if (first)
+        BIO_puts(out, "<EMPTY>\n");
+    else
+        BIO_puts(out, "\n");
+    return 1;
+}
+
+static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
+                                      STACK_OF(CONF_VALUE) *nval)
+{
+    size_t i;
+    CONF_VALUE *cnf;
+    DIST_POINT *point = NULL;
+    point = DIST_POINT_new();
+    if (!point)
+        goto err;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        int ret;
+        cnf = sk_CONF_VALUE_value(nval, i);
+        ret = set_dist_point_name(&point->distpoint, ctx, cnf);
+        if (ret > 0)
+            continue;
+        if (ret < 0)
+            goto err;
+        if (!strcmp(cnf->name, "reasons")) {
+            if (!set_reasons(&point->reasons, cnf->value))
+                goto err;
+        } else if (!strcmp(cnf->name, "CRLissuer")) {
+            point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
+            if (!point->CRLissuer)
+                goto err;
+        }
+    }
+
+    return point;
+
+ err:
+    if (point)
+        DIST_POINT_free(point);
+    return NULL;
+}
+
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    STACK_OF(DIST_POINT) *crld = NULL;
+    GENERAL_NAMES *gens = NULL;
+    GENERAL_NAME *gen = NULL;
+    CONF_VALUE *cnf;
+    size_t i;
+    if (!(crld = sk_DIST_POINT_new_null()))
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        DIST_POINT *point;
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!cnf->value) {
+            STACK_OF(CONF_VALUE) *dpsect;
+            dpsect = X509V3_get_section(ctx, cnf->name);
+            if (!dpsect)
+                goto err;
+            point = crldp_from_section(ctx, dpsect);
+            X509V3_section_free(ctx, dpsect);
+            if (!point)
+                goto err;
+            if (!sk_DIST_POINT_push(crld, point)) {
+                DIST_POINT_free(point);
+                goto merr;
+            }
+        } else {
+            if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                goto err;
+            if (!(gens = GENERAL_NAMES_new()))
+                goto merr;
+            if (!sk_GENERAL_NAME_push(gens, gen))
+                goto merr;
+            gen = NULL;
+            if (!(point = DIST_POINT_new()))
+                goto merr;
+            if (!sk_DIST_POINT_push(crld, point)) {
+                DIST_POINT_free(point);
+                goto merr;
+            }
+            if (!(point->distpoint = DIST_POINT_NAME_new()))
+                goto merr;
+            point->distpoint->name.fullname = gens;
+            point->distpoint->type = 0;
+            gens = NULL;
+        }
+    }
+    return crld;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    GENERAL_NAME_free(gen);
+    GENERAL_NAMES_free(gens);
+    sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
+    return NULL;
+}
+
+IMPLEMENT_ASN1_SET_OF(DIST_POINT)
+
+static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                  void *exarg)
+{
+    DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
+
+    switch (operation) {
+    case ASN1_OP_NEW_POST:
+        dpn->dpname = NULL;
+        break;
+
+    case ASN1_OP_FREE_POST:
+        if (dpn->dpname)
+            X509_NAME_free(dpn->dpname);
+        break;
+    }
+    return 1;
+}
+
+
+ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
+        ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
+        ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
+} ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
+
+
+IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
+
+ASN1_SEQUENCE(DIST_POINT) = {
+        ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
+        ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
+        ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
+} ASN1_SEQUENCE_END(DIST_POINT)
+
+IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
+
+ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
+ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
+
+IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+
+ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
+        ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
+} ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
+
+IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent);
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval);
+
+const X509V3_EXT_METHOD v3_idp = {
+    NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(ISSUING_DIST_POINT),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+    v2i_idp,
+    i2r_idp, 0,
+    NULL
+};
+
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval)
+{
+    ISSUING_DIST_POINT *idp = NULL;
+    CONF_VALUE *cnf;
+    char *name, *val;
+    size_t i;
+    int ret;
+    idp = ISSUING_DIST_POINT_new();
+    if (!idp)
+        goto merr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        name = cnf->name;
+        val = cnf->value;
+        ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
+        if (ret > 0)
+            continue;
+        if (ret < 0)
+            goto err;
+        if (!strcmp(name, "onlyuser")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
+                goto err;
+        } else if (!strcmp(name, "onlyCA")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
+                goto err;
+        } else if (!strcmp(name, "onlyAA")) {
+            if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
+                goto err;
+        } else if (!strcmp(name, "indirectCRL")) {
+            if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
+                goto err;
+        } else if (!strcmp(name, "onlysomereasons")) {
+            if (!set_reasons(&idp->onlysomereasons, val))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+    }
+    return idp;
+
+ merr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    ISSUING_DIST_POINT_free(idp);
+    return NULL;
+}
+
+static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
+{
+    size_t i;
+    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+        BIO_printf(out, "%*s", indent + 2, "");
+        GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
+        BIO_puts(out, "\n");
+    }
+    return 1;
+}
+
+static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
+{
+    if (dpn->type == 0) {
+        BIO_printf(out, "%*sFull Name:\n", indent, "");
+        print_gens(out, dpn->name.fullname, indent);
+    } else {
+        X509_NAME ntmp;
+        ntmp.entries = dpn->name.relativename;
+        BIO_printf(out, "%*sRelative Name:\n%*s", indent, "", indent + 2, "");
+        X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
+        BIO_puts(out, "\n");
+    }
+    return 1;
+}
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent)
+{
+    ISSUING_DIST_POINT *idp = pidp;
+    if (idp->distpoint)
+        print_distpoint(out, idp->distpoint, indent);
+    if (idp->onlyuser > 0)
+        BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
+    if (idp->onlyCA > 0)
+        BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
+    if (idp->indirectCRL > 0)
+        BIO_printf(out, "%*sIndirect CRL\n", indent, "");
+    if (idp->onlysomereasons)
+        print_reasons(out, "Only Some Reasons", idp->onlysomereasons, indent);
+    if (idp->onlyattr > 0)
+        BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
+    if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
+        && (idp->indirectCRL <= 0) && !idp->onlysomereasons
+        && (idp->onlyattr <= 0))
+        BIO_printf(out, "%*s<EMPTY>\n", indent, "");
+
+    return 1;
+}
+
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent)
+{
+    STACK_OF(DIST_POINT) *crld = pcrldp;
+    DIST_POINT *point;
+    size_t i;
+    for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
+        BIO_puts(out, "\n");
+        point = sk_DIST_POINT_value(crld, i);
+        if (point->distpoint)
+            print_distpoint(out, point->distpoint, indent);
+        if (point->reasons)
+            print_reasons(out, "Reasons", point->reasons, indent);
+        if (point->CRLissuer) {
+            BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
+            print_gens(out, point->CRLissuer, indent);
+        }
+    }
+    return 1;
+}
+
+int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
+{
+    size_t i;
+    STACK_OF(X509_NAME_ENTRY) *frag;
+    X509_NAME_ENTRY *ne;
+    if (!dpn || (dpn->type != 1))
+        return 1;
+    frag = dpn->name.relativename;
+    dpn->dpname = X509_NAME_dup(iname);
+    if (!dpn->dpname)
+        return 0;
+    for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++) {
+        ne = sk_X509_NAME_ENTRY_value(frag, i);
+        if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1)) {
+            X509_NAME_free(dpn->dpname);
+            dpn->dpname = NULL;
+            return 0;
+        }
+    }
+    /* generate cached encoding of name */
+    if (i2d_X509_NAME(dpn->dpname, NULL) < 0) {
+        X509_NAME_free(dpn->dpname);
+        dpn->dpname = NULL;
+        return 0;
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c
new file mode 100644
index 0000000..8f3c31f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c	
@@ -0,0 +1,100 @@
+/* v3_enum.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/x509v3.h>
+
+static const ENUMERATED_NAMES crl_reasons[] = {
+    {CRL_REASON_UNSPECIFIED, "Unspecified", "unspecified"},
+    {CRL_REASON_KEY_COMPROMISE, "Key Compromise", "keyCompromise"},
+    {CRL_REASON_CA_COMPROMISE, "CA Compromise", "CACompromise"},
+    {CRL_REASON_AFFILIATION_CHANGED, "Affiliation Changed",
+     "affiliationChanged"},
+    {CRL_REASON_SUPERSEDED, "Superseded", "superseded"},
+    {CRL_REASON_CESSATION_OF_OPERATION,
+     "Cessation Of Operation", "cessationOfOperation"},
+    {CRL_REASON_CERTIFICATE_HOLD, "Certificate Hold", "certificateHold"},
+    {CRL_REASON_REMOVE_FROM_CRL, "Remove From CRL", "removeFromCRL"},
+    {CRL_REASON_PRIVILEGE_WITHDRAWN, "Privilege Withdrawn",
+     "privilegeWithdrawn"},
+    {CRL_REASON_AA_COMPROMISE, "AA Compromise", "AACompromise"},
+    {-1, NULL, NULL}
+};
+
+const X509V3_EXT_METHOD v3_crl_reason = {
+    NID_crl_reason, 0, ASN1_ITEM_ref(ASN1_ENUMERATED),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_ENUMERATED_TABLE,
+    0,
+    0, 0, 0, 0,
+    (void *)crl_reasons
+};
+
+char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *e)
+{
+    const ENUMERATED_NAMES *enam;
+    long strval;
+    strval = ASN1_ENUMERATED_get(e);
+    for (enam = method->usr_data; enam->lname; enam++) {
+        if (strval == enam->bitnum)
+            return OPENSSL_strdup(enam->lname);
+    }
+    return i2s_ASN1_ENUMERATED(method, e);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c.grpc_back
new file mode 100644
index 0000000..eff77e8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_enum.c.grpc_back	
@@ -0,0 +1,100 @@
+/* v3_enum.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/obj.h>
+#include <openssl/mem.h>
+#include <openssl/x509v3.h>
+
+static const ENUMERATED_NAMES crl_reasons[] = {
+    {CRL_REASON_UNSPECIFIED, "Unspecified", "unspecified"},
+    {CRL_REASON_KEY_COMPROMISE, "Key Compromise", "keyCompromise"},
+    {CRL_REASON_CA_COMPROMISE, "CA Compromise", "CACompromise"},
+    {CRL_REASON_AFFILIATION_CHANGED, "Affiliation Changed",
+     "affiliationChanged"},
+    {CRL_REASON_SUPERSEDED, "Superseded", "superseded"},
+    {CRL_REASON_CESSATION_OF_OPERATION,
+     "Cessation Of Operation", "cessationOfOperation"},
+    {CRL_REASON_CERTIFICATE_HOLD, "Certificate Hold", "certificateHold"},
+    {CRL_REASON_REMOVE_FROM_CRL, "Remove From CRL", "removeFromCRL"},
+    {CRL_REASON_PRIVILEGE_WITHDRAWN, "Privilege Withdrawn",
+     "privilegeWithdrawn"},
+    {CRL_REASON_AA_COMPROMISE, "AA Compromise", "AACompromise"},
+    {-1, NULL, NULL}
+};
+
+const X509V3_EXT_METHOD v3_crl_reason = {
+    NID_crl_reason, 0, ASN1_ITEM_ref(ASN1_ENUMERATED),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_ENUMERATED_TABLE,
+    0,
+    0, 0, 0, 0,
+    (void *)crl_reasons
+};
+
+char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *e)
+{
+    const ENUMERATED_NAMES *enam;
+    long strval;
+    strval = ASN1_ENUMERATED_get(e);
+    for (enam = method->usr_data; enam->lname; enam++) {
+        if (strval == enam->bitnum)
+            return OPENSSL_strdup(enam->lname);
+    }
+    return i2s_ASN1_ENUMERATED(method, e);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c
new file mode 100644
index 0000000..199576d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c	
@@ -0,0 +1,148 @@
+/* v3_extku.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static void *v2i_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *nval);
+static STACK_OF(CONF_VALUE) *i2v_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD
+                                                    *method, void *eku, STACK_OF(CONF_VALUE)
+                                                    *extlist);
+
+const X509V3_EXT_METHOD v3_ext_ku = {
+    NID_ext_key_usage, 0,
+    ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_EXTENDED_KEY_USAGE,
+    v2i_EXTENDED_KEY_USAGE,
+    0, 0,
+    NULL
+};
+
+/* NB OCSP acceptable responses also is a SEQUENCE OF OBJECT */
+const X509V3_EXT_METHOD v3_ocsp_accresp = {
+    NID_id_pkix_OCSP_acceptableResponses, 0,
+    ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_EXTENDED_KEY_USAGE,
+    v2i_EXTENDED_KEY_USAGE,
+    0, 0,
+    NULL
+};
+
+ASN1_ITEM_TEMPLATE(EXTENDED_KEY_USAGE) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, EXTENDED_KEY_USAGE, ASN1_OBJECT)
+ASN1_ITEM_TEMPLATE_END(EXTENDED_KEY_USAGE)
+
+IMPLEMENT_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
+
+static STACK_OF(CONF_VALUE) *i2v_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD
+                                                    *method, void *a, STACK_OF(CONF_VALUE)
+                                                    *ext_list)
+{
+    EXTENDED_KEY_USAGE *eku = a;
+    size_t i;
+    ASN1_OBJECT *obj;
+    char obj_tmp[80];
+    for (i = 0; i < sk_ASN1_OBJECT_num(eku); i++) {
+        obj = sk_ASN1_OBJECT_value(eku, i);
+        i2t_ASN1_OBJECT(obj_tmp, 80, obj);
+        X509V3_add_value(NULL, obj_tmp, &ext_list);
+    }
+    return ext_list;
+}
+
+static void *v2i_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *nval)
+{
+    EXTENDED_KEY_USAGE *extku;
+    char *extval;
+    ASN1_OBJECT *objtmp;
+    CONF_VALUE *val;
+    size_t i;
+
+    if (!(extku = sk_ASN1_OBJECT_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (val->value)
+            extval = val->value;
+        else
+            extval = val->name;
+        if (!(objtmp = OBJ_txt2obj(extval, 0))) {
+            sk_ASN1_OBJECT_pop_free(extku, ASN1_OBJECT_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        sk_ASN1_OBJECT_push(extku, objtmp);
+    }
+    return extku;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c.grpc_back
new file mode 100644
index 0000000..952e032
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_extku.c.grpc_back	
@@ -0,0 +1,148 @@
+/* v3_extku.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static void *v2i_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *nval);
+static STACK_OF(CONF_VALUE) *i2v_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD
+                                                    *method, void *eku, STACK_OF(CONF_VALUE)
+                                                    *extlist);
+
+const X509V3_EXT_METHOD v3_ext_ku = {
+    NID_ext_key_usage, 0,
+    ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_EXTENDED_KEY_USAGE,
+    v2i_EXTENDED_KEY_USAGE,
+    0, 0,
+    NULL
+};
+
+/* NB OCSP acceptable responses also is a SEQUENCE OF OBJECT */
+const X509V3_EXT_METHOD v3_ocsp_accresp = {
+    NID_id_pkix_OCSP_acceptableResponses, 0,
+    ASN1_ITEM_ref(EXTENDED_KEY_USAGE),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_EXTENDED_KEY_USAGE,
+    v2i_EXTENDED_KEY_USAGE,
+    0, 0,
+    NULL
+};
+
+ASN1_ITEM_TEMPLATE(EXTENDED_KEY_USAGE) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, EXTENDED_KEY_USAGE, ASN1_OBJECT)
+ASN1_ITEM_TEMPLATE_END(EXTENDED_KEY_USAGE)
+
+IMPLEMENT_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
+
+static STACK_OF(CONF_VALUE) *i2v_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD
+                                                    *method, void *a, STACK_OF(CONF_VALUE)
+                                                    *ext_list)
+{
+    EXTENDED_KEY_USAGE *eku = a;
+    size_t i;
+    ASN1_OBJECT *obj;
+    char obj_tmp[80];
+    for (i = 0; i < sk_ASN1_OBJECT_num(eku); i++) {
+        obj = sk_ASN1_OBJECT_value(eku, i);
+        i2t_ASN1_OBJECT(obj_tmp, 80, obj);
+        X509V3_add_value(NULL, obj_tmp, &ext_list);
+    }
+    return ext_list;
+}
+
+static void *v2i_EXTENDED_KEY_USAGE(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *nval)
+{
+    EXTENDED_KEY_USAGE *extku;
+    char *extval;
+    ASN1_OBJECT *objtmp;
+    CONF_VALUE *val;
+    size_t i;
+
+    if (!(extku = sk_ASN1_OBJECT_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (val->value)
+            extval = val->value;
+        else
+            extval = val->name;
+        if (!(objtmp = OBJ_txt2obj(extval, 0))) {
+            sk_ASN1_OBJECT_pop_free(extku, ASN1_OBJECT_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        sk_ASN1_OBJECT_push(extku, objtmp);
+    }
+    return extku;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c
new file mode 100644
index 0000000..ef503ce
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c	
@@ -0,0 +1,246 @@
+/* v3_genn.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+
+ASN1_SEQUENCE(OTHERNAME) = {
+        ASN1_SIMPLE(OTHERNAME, type_id, ASN1_OBJECT),
+        /* Maybe have a true ANY DEFINED BY later */
+        ASN1_EXP(OTHERNAME, value, ASN1_ANY, 0)
+} ASN1_SEQUENCE_END(OTHERNAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(OTHERNAME)
+
+ASN1_SEQUENCE(EDIPARTYNAME) = {
+        ASN1_IMP_OPT(EDIPARTYNAME, nameAssigner, DIRECTORYSTRING, 0),
+        ASN1_IMP_OPT(EDIPARTYNAME, partyName, DIRECTORYSTRING, 1)
+} ASN1_SEQUENCE_END(EDIPARTYNAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(EDIPARTYNAME)
+
+ASN1_CHOICE(GENERAL_NAME) = {
+        ASN1_IMP(GENERAL_NAME, d.otherName, OTHERNAME, GEN_OTHERNAME),
+        ASN1_IMP(GENERAL_NAME, d.rfc822Name, ASN1_IA5STRING, GEN_EMAIL),
+        ASN1_IMP(GENERAL_NAME, d.dNSName, ASN1_IA5STRING, GEN_DNS),
+        /* Don't decode this */
+        ASN1_IMP(GENERAL_NAME, d.x400Address, ASN1_SEQUENCE, GEN_X400),
+        /* X509_NAME is a CHOICE type so use EXPLICIT */
+        ASN1_EXP(GENERAL_NAME, d.directoryName, X509_NAME, GEN_DIRNAME),
+        ASN1_IMP(GENERAL_NAME, d.ediPartyName, EDIPARTYNAME, GEN_EDIPARTY),
+        ASN1_IMP(GENERAL_NAME, d.uniformResourceIdentifier, ASN1_IA5STRING, GEN_URI),
+        ASN1_IMP(GENERAL_NAME, d.iPAddress, ASN1_OCTET_STRING, GEN_IPADD),
+        ASN1_IMP(GENERAL_NAME, d.registeredID, ASN1_OBJECT, GEN_RID)
+} ASN1_CHOICE_END(GENERAL_NAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAME)
+
+ASN1_ITEM_TEMPLATE(GENERAL_NAMES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, GENERAL_NAME)
+ASN1_ITEM_TEMPLATE_END(GENERAL_NAMES)
+
+IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAMES)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(GENERAL_NAME)
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)
+{
+    int result = -1;
+
+    if (!a || !b || a->type != b->type)
+        return -1;
+    switch (a->type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        result = ASN1_TYPE_cmp(a->d.other, b->d.other);
+        break;
+
+    case GEN_OTHERNAME:
+        result = OTHERNAME_cmp(a->d.otherName, b->d.otherName);
+        break;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        result = ASN1_STRING_cmp(a->d.ia5, b->d.ia5);
+        break;
+
+    case GEN_DIRNAME:
+        result = X509_NAME_cmp(a->d.dirn, b->d.dirn);
+        break;
+
+    case GEN_IPADD:
+        result = ASN1_OCTET_STRING_cmp(a->d.ip, b->d.ip);
+        break;
+
+    case GEN_RID:
+        result = OBJ_cmp(a->d.rid, b->d.rid);
+        break;
+    }
+    return result;
+}
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b)
+{
+    int result = -1;
+
+    if (!a || !b)
+        return -1;
+    /* Check their type first. */
+    if ((result = OBJ_cmp(a->type_id, b->type_id)) != 0)
+        return result;
+    /* Check the value. */
+    result = ASN1_TYPE_cmp(a->value, b->value);
+    return result;
+}
+
+void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value)
+{
+    switch (type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        a->d.other = value;
+        break;
+
+    case GEN_OTHERNAME:
+        a->d.otherName = value;
+        break;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        a->d.ia5 = value;
+        break;
+
+    case GEN_DIRNAME:
+        a->d.dirn = value;
+        break;
+
+    case GEN_IPADD:
+        a->d.ip = value;
+        break;
+
+    case GEN_RID:
+        a->d.rid = value;
+        break;
+    }
+    a->type = type;
+}
+
+void *GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype)
+{
+    if (ptype)
+        *ptype = a->type;
+    switch (a->type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        return a->d.other;
+
+    case GEN_OTHERNAME:
+        return a->d.otherName;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        return a->d.ia5;
+
+    case GEN_DIRNAME:
+        return a->d.dirn;
+
+    case GEN_IPADD:
+        return a->d.ip;
+
+    case GEN_RID:
+        return a->d.rid;
+
+    default:
+        return NULL;
+    }
+}
+
+int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
+                                ASN1_OBJECT *oid, ASN1_TYPE *value)
+{
+    OTHERNAME *oth;
+    oth = OTHERNAME_new();
+    if (!oth)
+        return 0;
+    ASN1_TYPE_free(oth->value);
+    oth->type_id = oid;
+    oth->value = value;
+    GENERAL_NAME_set0_value(gen, GEN_OTHERNAME, oth);
+    return 1;
+}
+
+int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen,
+                                ASN1_OBJECT **poid, ASN1_TYPE **pvalue)
+{
+    if (gen->type != GEN_OTHERNAME)
+        return 0;
+    if (poid)
+        *poid = gen->d.otherName->type_id;
+    if (pvalue)
+        *pvalue = gen->d.otherName->value;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c.grpc_back
new file mode 100644
index 0000000..552a524
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_genn.c.grpc_back	
@@ -0,0 +1,246 @@
+/* v3_genn.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+
+ASN1_SEQUENCE(OTHERNAME) = {
+        ASN1_SIMPLE(OTHERNAME, type_id, ASN1_OBJECT),
+        /* Maybe have a true ANY DEFINED BY later */
+        ASN1_EXP(OTHERNAME, value, ASN1_ANY, 0)
+} ASN1_SEQUENCE_END(OTHERNAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(OTHERNAME)
+
+ASN1_SEQUENCE(EDIPARTYNAME) = {
+        ASN1_IMP_OPT(EDIPARTYNAME, nameAssigner, DIRECTORYSTRING, 0),
+        ASN1_IMP_OPT(EDIPARTYNAME, partyName, DIRECTORYSTRING, 1)
+} ASN1_SEQUENCE_END(EDIPARTYNAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(EDIPARTYNAME)
+
+ASN1_CHOICE(GENERAL_NAME) = {
+        ASN1_IMP(GENERAL_NAME, d.otherName, OTHERNAME, GEN_OTHERNAME),
+        ASN1_IMP(GENERAL_NAME, d.rfc822Name, ASN1_IA5STRING, GEN_EMAIL),
+        ASN1_IMP(GENERAL_NAME, d.dNSName, ASN1_IA5STRING, GEN_DNS),
+        /* Don't decode this */
+        ASN1_IMP(GENERAL_NAME, d.x400Address, ASN1_SEQUENCE, GEN_X400),
+        /* X509_NAME is a CHOICE type so use EXPLICIT */
+        ASN1_EXP(GENERAL_NAME, d.directoryName, X509_NAME, GEN_DIRNAME),
+        ASN1_IMP(GENERAL_NAME, d.ediPartyName, EDIPARTYNAME, GEN_EDIPARTY),
+        ASN1_IMP(GENERAL_NAME, d.uniformResourceIdentifier, ASN1_IA5STRING, GEN_URI),
+        ASN1_IMP(GENERAL_NAME, d.iPAddress, ASN1_OCTET_STRING, GEN_IPADD),
+        ASN1_IMP(GENERAL_NAME, d.registeredID, ASN1_OBJECT, GEN_RID)
+} ASN1_CHOICE_END(GENERAL_NAME)
+
+IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAME)
+
+ASN1_ITEM_TEMPLATE(GENERAL_NAMES) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, GENERAL_NAME)
+ASN1_ITEM_TEMPLATE_END(GENERAL_NAMES)
+
+IMPLEMENT_ASN1_FUNCTIONS(GENERAL_NAMES)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(GENERAL_NAME)
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)
+{
+    int result = -1;
+
+    if (!a || !b || a->type != b->type)
+        return -1;
+    switch (a->type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        result = ASN1_TYPE_cmp(a->d.other, b->d.other);
+        break;
+
+    case GEN_OTHERNAME:
+        result = OTHERNAME_cmp(a->d.otherName, b->d.otherName);
+        break;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        result = ASN1_STRING_cmp(a->d.ia5, b->d.ia5);
+        break;
+
+    case GEN_DIRNAME:
+        result = X509_NAME_cmp(a->d.dirn, b->d.dirn);
+        break;
+
+    case GEN_IPADD:
+        result = ASN1_OCTET_STRING_cmp(a->d.ip, b->d.ip);
+        break;
+
+    case GEN_RID:
+        result = OBJ_cmp(a->d.rid, b->d.rid);
+        break;
+    }
+    return result;
+}
+
+/* Returns 0 if they are equal, != 0 otherwise. */
+int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b)
+{
+    int result = -1;
+
+    if (!a || !b)
+        return -1;
+    /* Check their type first. */
+    if ((result = OBJ_cmp(a->type_id, b->type_id)) != 0)
+        return result;
+    /* Check the value. */
+    result = ASN1_TYPE_cmp(a->value, b->value);
+    return result;
+}
+
+void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value)
+{
+    switch (type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        a->d.other = value;
+        break;
+
+    case GEN_OTHERNAME:
+        a->d.otherName = value;
+        break;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        a->d.ia5 = value;
+        break;
+
+    case GEN_DIRNAME:
+        a->d.dirn = value;
+        break;
+
+    case GEN_IPADD:
+        a->d.ip = value;
+        break;
+
+    case GEN_RID:
+        a->d.rid = value;
+        break;
+    }
+    a->type = type;
+}
+
+void *GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype)
+{
+    if (ptype)
+        *ptype = a->type;
+    switch (a->type) {
+    case GEN_X400:
+    case GEN_EDIPARTY:
+        return a->d.other;
+
+    case GEN_OTHERNAME:
+        return a->d.otherName;
+
+    case GEN_EMAIL:
+    case GEN_DNS:
+    case GEN_URI:
+        return a->d.ia5;
+
+    case GEN_DIRNAME:
+        return a->d.dirn;
+
+    case GEN_IPADD:
+        return a->d.ip;
+
+    case GEN_RID:
+        return a->d.rid;
+
+    default:
+        return NULL;
+    }
+}
+
+int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
+                                ASN1_OBJECT *oid, ASN1_TYPE *value)
+{
+    OTHERNAME *oth;
+    oth = OTHERNAME_new();
+    if (!oth)
+        return 0;
+    ASN1_TYPE_free(oth->value);
+    oth->type_id = oid;
+    oth->value = value;
+    GENERAL_NAME_set0_value(gen, GEN_OTHERNAME, oth);
+    return 1;
+}
+
+int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen,
+                                ASN1_OBJECT **poid, ASN1_TYPE **pvalue)
+{
+    if (gen->type != GEN_OTHERNAME)
+        return 0;
+    if (poid)
+        *poid = gen->d.otherName->type_id;
+    if (pvalue)
+        *pvalue = gen->d.otherName->value;
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c
new file mode 100644
index 0000000..b88c8b9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c	
@@ -0,0 +1,122 @@
+/* v3_ia5.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+
+static char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                ASN1_IA5STRING *ia5);
+static ASN1_IA5STRING *s2i_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str);
+const X509V3_EXT_METHOD v3_ns_ia5_list[] = {
+    EXT_IA5STRING(NID_netscape_base_url),
+    EXT_IA5STRING(NID_netscape_revocation_url),
+    EXT_IA5STRING(NID_netscape_ca_revocation_url),
+    EXT_IA5STRING(NID_netscape_renewal_url),
+    EXT_IA5STRING(NID_netscape_ca_policy_url),
+    EXT_IA5STRING(NID_netscape_ssl_server_name),
+    EXT_IA5STRING(NID_netscape_comment),
+    EXT_END
+};
+
+static char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                ASN1_IA5STRING *ia5)
+{
+    char *tmp;
+    if (!ia5 || !ia5->length)
+        return NULL;
+    if (!(tmp = OPENSSL_malloc(ia5->length + 1))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    OPENSSL_memcpy(tmp, ia5->data, ia5->length);
+    tmp[ia5->length] = 0;
+    return tmp;
+}
+
+static ASN1_IA5STRING *s2i_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str)
+{
+    ASN1_IA5STRING *ia5;
+    if (!str) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return NULL;
+    }
+    if (!(ia5 = M_ASN1_IA5STRING_new()))
+        goto err;
+    if (!ASN1_STRING_set((ASN1_STRING *)ia5, (unsigned char *)str,
+                         strlen(str))) {
+        M_ASN1_IA5STRING_free(ia5);
+        goto err;
+    }
+    return ia5;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c.grpc_back
new file mode 100644
index 0000000..6b2056d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ia5.c.grpc_back	
@@ -0,0 +1,122 @@
+/* v3_ia5.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+
+static char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                ASN1_IA5STRING *ia5);
+static ASN1_IA5STRING *s2i_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str);
+const X509V3_EXT_METHOD v3_ns_ia5_list[] = {
+    EXT_IA5STRING(NID_netscape_base_url),
+    EXT_IA5STRING(NID_netscape_revocation_url),
+    EXT_IA5STRING(NID_netscape_ca_revocation_url),
+    EXT_IA5STRING(NID_netscape_renewal_url),
+    EXT_IA5STRING(NID_netscape_ca_policy_url),
+    EXT_IA5STRING(NID_netscape_ssl_server_name),
+    EXT_IA5STRING(NID_netscape_comment),
+    EXT_END
+};
+
+static char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                ASN1_IA5STRING *ia5)
+{
+    char *tmp;
+    if (!ia5 || !ia5->length)
+        return NULL;
+    if (!(tmp = OPENSSL_malloc(ia5->length + 1))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    OPENSSL_memcpy(tmp, ia5->data, ia5->length);
+    tmp[ia5->length] = 0;
+    return tmp;
+}
+
+static ASN1_IA5STRING *s2i_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str)
+{
+    ASN1_IA5STRING *ia5;
+    if (!str) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return NULL;
+    }
+    if (!(ia5 = M_ASN1_IA5STRING_new()))
+        goto err;
+    if (!ASN1_STRING_set((ASN1_STRING *)ia5, (unsigned char *)str,
+                         strlen(str))) {
+        M_ASN1_IA5STRING_free(ia5);
+        goto err;
+    }
+    return ia5;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c
new file mode 100644
index 0000000..e566892
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c	
@@ -0,0 +1,218 @@
+/* v3_info.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                       *method, AUTHORITY_INFO_ACCESS
+                                                       *ainfo, STACK_OF(CONF_VALUE)
+                                                       *ret);
+static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                        *method,
+                                                        X509V3_CTX *ctx,
+                                                        STACK_OF(CONF_VALUE)
+                                                        *nval);
+
+const X509V3_EXT_METHOD v3_info = { NID_info_access, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
+    0, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_sinfo = { NID_sinfo_access, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
+    0, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(ACCESS_DESCRIPTION) = {
+        ASN1_SIMPLE(ACCESS_DESCRIPTION, method, ASN1_OBJECT),
+        ASN1_SIMPLE(ACCESS_DESCRIPTION, location, GENERAL_NAME)
+} ASN1_SEQUENCE_END(ACCESS_DESCRIPTION)
+
+IMPLEMENT_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
+
+ASN1_ITEM_TEMPLATE(AUTHORITY_INFO_ACCESS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, ACCESS_DESCRIPTION)
+ASN1_ITEM_TEMPLATE_END(AUTHORITY_INFO_ACCESS)
+
+IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(
+    X509V3_EXT_METHOD *method, AUTHORITY_INFO_ACCESS *ainfo,
+    STACK_OF(CONF_VALUE) *ret)
+{
+    ACCESS_DESCRIPTION *desc;
+    size_t i;
+    int nlen;
+    char objtmp[80], *ntmp;
+    CONF_VALUE *vtmp;
+    STACK_OF(CONF_VALUE) *tret = ret;
+
+    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(ainfo); i++) {
+        STACK_OF(CONF_VALUE) *tmp;
+
+        desc = sk_ACCESS_DESCRIPTION_value(ainfo, i);
+        tmp = i2v_GENERAL_NAME(method, desc->location, tret);
+        if (tmp == NULL)
+            goto err;
+        tret = tmp;
+        vtmp = sk_CONF_VALUE_value(tret, i);
+        i2t_ASN1_OBJECT(objtmp, sizeof objtmp, desc->method);
+        nlen = strlen(objtmp) + strlen(vtmp->name) + 5;
+        ntmp = OPENSSL_malloc(nlen);
+        if (ntmp == NULL)
+            goto err;
+        OPENSSL_strlcpy(ntmp, objtmp, nlen);
+        OPENSSL_strlcat(ntmp, " - ", nlen);
+        OPENSSL_strlcat(ntmp, vtmp->name, nlen);
+        OPENSSL_free(vtmp->name);
+        vtmp->name = ntmp;
+
+    }
+    if (ret == NULL && tret == NULL)
+        return sk_CONF_VALUE_new_null();
+
+    return tret;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    if (ret == NULL && tret != NULL)
+        sk_CONF_VALUE_pop_free(tret, X509V3_conf_free);
+    return NULL;
+}
+
+static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                        *method,
+                                                        X509V3_CTX *ctx,
+                                                        STACK_OF(CONF_VALUE)
+                                                        *nval)
+{
+    AUTHORITY_INFO_ACCESS *ainfo = NULL;
+    CONF_VALUE *cnf, ctmp;
+    ACCESS_DESCRIPTION *acc;
+    size_t i;
+    int objlen;
+    char *objtmp, *ptmp;
+    if (!(ainfo = sk_ACCESS_DESCRIPTION_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!(acc = ACCESS_DESCRIPTION_new())
+            || !sk_ACCESS_DESCRIPTION_push(ainfo, acc)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ptmp = strchr(cnf->name, ';');
+        if (!ptmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SYNTAX);
+            goto err;
+        }
+        objlen = ptmp - cnf->name;
+        ctmp.name = ptmp + 1;
+        ctmp.value = cnf->value;
+        if (!v2i_GENERAL_NAME_ex(acc->location, method, ctx, &ctmp, 0))
+            goto err;
+        if (!(objtmp = OPENSSL_malloc(objlen + 1))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_strlcpy(objtmp, cnf->name, objlen + 1);
+        acc->method = OBJ_txt2obj(objtmp, 0);
+        if (!acc->method) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
+            ERR_add_error_data(2, "value=", objtmp);
+            OPENSSL_free(objtmp);
+            goto err;
+        }
+        OPENSSL_free(objtmp);
+
+    }
+    return ainfo;
+ err:
+    sk_ACCESS_DESCRIPTION_pop_free(ainfo, ACCESS_DESCRIPTION_free);
+    return NULL;
+}
+
+int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION *a)
+{
+    i2a_ASN1_OBJECT(bp, a->method);
+#ifdef UNDEF
+    i2a_GENERAL_NAME(bp, a->location);
+#endif
+    return 2;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c.grpc_back
new file mode 100644
index 0000000..7a48bd5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_info.c.grpc_back	
@@ -0,0 +1,218 @@
+/* v3_info.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                       *method, AUTHORITY_INFO_ACCESS
+                                                       *ainfo, STACK_OF(CONF_VALUE)
+                                                       *ret);
+static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                        *method,
+                                                        X509V3_CTX *ctx,
+                                                        STACK_OF(CONF_VALUE)
+                                                        *nval);
+
+const X509V3_EXT_METHOD v3_info = { NID_info_access, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
+    0, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_sinfo = { NID_sinfo_access, X509V3_EXT_MULTILINE,
+    ASN1_ITEM_ref(AUTHORITY_INFO_ACCESS),
+    0, 0, 0, 0,
+    0, 0,
+    (X509V3_EXT_I2V) i2v_AUTHORITY_INFO_ACCESS,
+    (X509V3_EXT_V2I)v2i_AUTHORITY_INFO_ACCESS,
+    0, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(ACCESS_DESCRIPTION) = {
+        ASN1_SIMPLE(ACCESS_DESCRIPTION, method, ASN1_OBJECT),
+        ASN1_SIMPLE(ACCESS_DESCRIPTION, location, GENERAL_NAME)
+} ASN1_SEQUENCE_END(ACCESS_DESCRIPTION)
+
+IMPLEMENT_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
+
+ASN1_ITEM_TEMPLATE(AUTHORITY_INFO_ACCESS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, GeneralNames, ACCESS_DESCRIPTION)
+ASN1_ITEM_TEMPLATE_END(AUTHORITY_INFO_ACCESS)
+
+IMPLEMENT_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
+
+static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_INFO_ACCESS(
+    X509V3_EXT_METHOD *method, AUTHORITY_INFO_ACCESS *ainfo,
+    STACK_OF(CONF_VALUE) *ret)
+{
+    ACCESS_DESCRIPTION *desc;
+    size_t i;
+    int nlen;
+    char objtmp[80], *ntmp;
+    CONF_VALUE *vtmp;
+    STACK_OF(CONF_VALUE) *tret = ret;
+
+    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(ainfo); i++) {
+        STACK_OF(CONF_VALUE) *tmp;
+
+        desc = sk_ACCESS_DESCRIPTION_value(ainfo, i);
+        tmp = i2v_GENERAL_NAME(method, desc->location, tret);
+        if (tmp == NULL)
+            goto err;
+        tret = tmp;
+        vtmp = sk_CONF_VALUE_value(tret, i);
+        i2t_ASN1_OBJECT(objtmp, sizeof objtmp, desc->method);
+        nlen = strlen(objtmp) + strlen(vtmp->name) + 5;
+        ntmp = OPENSSL_malloc(nlen);
+        if (ntmp == NULL)
+            goto err;
+        OPENSSL_strlcpy(ntmp, objtmp, nlen);
+        OPENSSL_strlcat(ntmp, " - ", nlen);
+        OPENSSL_strlcat(ntmp, vtmp->name, nlen);
+        OPENSSL_free(vtmp->name);
+        vtmp->name = ntmp;
+
+    }
+    if (ret == NULL && tret == NULL)
+        return sk_CONF_VALUE_new_null();
+
+    return tret;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    if (ret == NULL && tret != NULL)
+        sk_CONF_VALUE_pop_free(tret, X509V3_conf_free);
+    return NULL;
+}
+
+static AUTHORITY_INFO_ACCESS *v2i_AUTHORITY_INFO_ACCESS(X509V3_EXT_METHOD
+                                                        *method,
+                                                        X509V3_CTX *ctx,
+                                                        STACK_OF(CONF_VALUE)
+                                                        *nval)
+{
+    AUTHORITY_INFO_ACCESS *ainfo = NULL;
+    CONF_VALUE *cnf, ctmp;
+    ACCESS_DESCRIPTION *acc;
+    size_t i;
+    int objlen;
+    char *objtmp, *ptmp;
+    if (!(ainfo = sk_ACCESS_DESCRIPTION_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!(acc = ACCESS_DESCRIPTION_new())
+            || !sk_ACCESS_DESCRIPTION_push(ainfo, acc)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        ptmp = strchr(cnf->name, ';');
+        if (!ptmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SYNTAX);
+            goto err;
+        }
+        objlen = ptmp - cnf->name;
+        ctmp.name = ptmp + 1;
+        ctmp.value = cnf->value;
+        if (!v2i_GENERAL_NAME_ex(acc->location, method, ctx, &ctmp, 0))
+            goto err;
+        if (!(objtmp = OPENSSL_malloc(objlen + 1))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+        OPENSSL_strlcpy(objtmp, cnf->name, objlen + 1);
+        acc->method = OBJ_txt2obj(objtmp, 0);
+        if (!acc->method) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
+            ERR_add_error_data(2, "value=", objtmp);
+            OPENSSL_free(objtmp);
+            goto err;
+        }
+        OPENSSL_free(objtmp);
+
+    }
+    return ainfo;
+ err:
+    sk_ACCESS_DESCRIPTION_pop_free(ainfo, ACCESS_DESCRIPTION_free);
+    return NULL;
+}
+
+int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION *a)
+{
+    i2a_ASN1_OBJECT(bp, a->method);
+#ifdef UNDEF
+    i2a_GENERAL_NAME(bp, a->location);
+#endif
+    return 2;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c
new file mode 100644
index 0000000..3cf01ca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c	
@@ -0,0 +1,91 @@
+/* v3_int.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+const X509V3_EXT_METHOD v3_crl_num = {
+    NID_crl_number, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    0,
+    0, 0, 0, 0, NULL
+};
+
+const X509V3_EXT_METHOD v3_delta_crl = {
+    NID_delta_crl, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    0,
+    0, 0, 0, 0, NULL
+};
+
+static void *s2i_asn1_int(X509V3_EXT_METHOD *meth, X509V3_CTX *ctx,
+                          char *value)
+{
+    return s2i_ASN1_INTEGER(meth, value);
+}
+
+const X509V3_EXT_METHOD v3_inhibit_anyp = {
+    NID_inhibit_any_policy, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    (X509V3_EXT_S2I)s2i_asn1_int,
+    0, 0, 0, 0, NULL
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c.grpc_back
new file mode 100644
index 0000000..7bde446
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_int.c.grpc_back	
@@ -0,0 +1,91 @@
+/* v3_int.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+const X509V3_EXT_METHOD v3_crl_num = {
+    NID_crl_number, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    0,
+    0, 0, 0, 0, NULL
+};
+
+const X509V3_EXT_METHOD v3_delta_crl = {
+    NID_delta_crl, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    0,
+    0, 0, 0, 0, NULL
+};
+
+static void *s2i_asn1_int(X509V3_EXT_METHOD *meth, X509V3_CTX *ctx,
+                          char *value)
+{
+    return s2i_ASN1_INTEGER(meth, value);
+}
+
+const X509V3_EXT_METHOD v3_inhibit_anyp = {
+    NID_inhibit_any_policy, 0, ASN1_ITEM_ref(ASN1_INTEGER),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_INTEGER,
+    (X509V3_EXT_S2I)s2i_asn1_int,
+    0, 0, 0, 0, NULL
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c
new file mode 100644
index 0000000..262521a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c	
@@ -0,0 +1,371 @@
+/* v3_lib.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* X509 v3 extension utilities */
+
+#include <stdio.h>
+
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "ext_dat.h"
+static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
+
+static void ext_list_free(X509V3_EXT_METHOD *ext);
+
+static int ext_stack_cmp(const X509V3_EXT_METHOD **a,
+                         const X509V3_EXT_METHOD **b)
+{
+    return ((*a)->ext_nid - (*b)->ext_nid);
+}
+
+int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
+{
+    if (!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_stack_cmp))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        ext_list_free(ext);
+        return 0;
+    }
+    if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        ext_list_free(ext);
+        return 0;
+    }
+    return 1;
+}
+
+static int ext_cmp(const void *void_a, const void *void_b)
+{
+    const X509V3_EXT_METHOD **a = (const X509V3_EXT_METHOD **)void_a;
+    const X509V3_EXT_METHOD **b = (const X509V3_EXT_METHOD **)void_b;
+    return ext_stack_cmp(a, b);
+}
+
+const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
+{
+    X509V3_EXT_METHOD tmp;
+    const X509V3_EXT_METHOD *t = &tmp, *const *ret;
+    size_t idx;
+
+    if (nid < 0)
+        return NULL;
+    tmp.ext_nid = nid;
+    ret =
+        bsearch(&t, standard_exts, STANDARD_EXTENSION_COUNT,
+                sizeof(X509V3_EXT_METHOD *), ext_cmp);
+    if (ret)
+        return *ret;
+    if (!ext_list)
+        return NULL;
+
+    sk_X509V3_EXT_METHOD_sort(ext_list);
+    if (!sk_X509V3_EXT_METHOD_find(ext_list, &idx, &tmp))
+        return NULL;
+    return sk_X509V3_EXT_METHOD_value(ext_list, idx);
+}
+
+const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
+{
+    int nid;
+    if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
+        return NULL;
+    return X509V3_EXT_get_nid(nid);
+}
+
+int X509V3_EXT_free(int nid, void *ext_data)
+{
+    const X509V3_EXT_METHOD *ext_method = X509V3_EXT_get_nid(nid);
+    if (ext_method == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_CANNOT_FIND_FREE_FUNCTION);
+        return 0;
+    }
+
+    if (ext_method->it != NULL)
+        ASN1_item_free(ext_data, ASN1_ITEM_ptr(ext_method->it));
+    else if (ext_method->ext_free != NULL)
+        ext_method->ext_free(ext_data);
+    else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_CANNOT_FIND_FREE_FUNCTION);
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
+{
+    for (; extlist->ext_nid != -1; extlist++)
+        if (!X509V3_EXT_add(extlist))
+            return 0;
+    return 1;
+}
+
+int X509V3_EXT_add_alias(int nid_to, int nid_from)
+{
+    const X509V3_EXT_METHOD *ext;
+    X509V3_EXT_METHOD *tmpext;
+
+    if (!(ext = X509V3_EXT_get_nid(nid_from))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_NOT_FOUND);
+        return 0;
+    }
+    if (!
+        (tmpext =
+         (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METHOD)))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    *tmpext = *ext;
+    tmpext->ext_nid = nid_to;
+    tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
+    return X509V3_EXT_add(tmpext);
+}
+
+void X509V3_EXT_cleanup(void)
+{
+    sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
+    ext_list = NULL;
+}
+
+static void ext_list_free(X509V3_EXT_METHOD *ext)
+{
+    if (ext->ext_flags & X509V3_EXT_DYNAMIC)
+        OPENSSL_free(ext);
+}
+
+/*
+ * Legacy function: we don't need to add standard extensions any more because
+ * they are now kept in ext_dat.h.
+ */
+
+int X509V3_add_standard_extensions(void)
+{
+    return 1;
+}
+
+/* Return an extension internal structure */
+
+void *X509V3_EXT_d2i(X509_EXTENSION *ext)
+{
+    const X509V3_EXT_METHOD *method;
+    const unsigned char *p;
+
+    if (!(method = X509V3_EXT_get(ext)))
+        return NULL;
+    p = ext->value->data;
+    if (method->it)
+        return ASN1_item_d2i(NULL, &p, ext->value->length,
+                             ASN1_ITEM_ptr(method->it));
+    return method->d2i(NULL, &p, ext->value->length);
+}
+
+/*
+ * Get critical flag and decoded version of extension from a NID. The "idx"
+ * variable returns the last found extension and can be used to retrieve
+ * multiple extensions of the same NID. However multiple extensions with the
+ * same NID is usually due to a badly encoded certificate so if idx is NULL
+ * we choke if multiple extensions exist. The "crit" variable is set to the
+ * critical value. The return value is the decoded extension or NULL on
+ * error. The actual error can have several different causes, the value of
+ * *crit reflects the cause: >= 0, extension found but not decoded (reflects
+ * critical value). -1 extension not found. -2 extension occurs more than
+ * once.
+ */
+
+void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit,
+                     int *idx)
+{
+    int lastpos;
+    size_t i;
+    X509_EXTENSION *ex, *found_ex = NULL;
+    if (!x) {
+        if (idx)
+            *idx = -1;
+        if (crit)
+            *crit = -1;
+        return NULL;
+    }
+    if (idx)
+        lastpos = *idx + 1;
+    else
+        lastpos = 0;
+    if (lastpos < 0)
+        lastpos = 0;
+    for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
+        ex = sk_X509_EXTENSION_value(x, i);
+        if (OBJ_obj2nid(ex->object) == nid) {
+            if (idx) {
+                *idx = i;
+                found_ex = ex;
+                break;
+            } else if (found_ex) {
+                /* Found more than one */
+                if (crit)
+                    *crit = -2;
+                return NULL;
+            }
+            found_ex = ex;
+        }
+    }
+    if (found_ex) {
+        /* Found it */
+        if (crit)
+            *crit = X509_EXTENSION_get_critical(found_ex);
+        return X509V3_EXT_d2i(found_ex);
+    }
+
+    /* Extension not found */
+    if (idx)
+        *idx = -1;
+    if (crit)
+        *crit = -1;
+    return NULL;
+}
+
+/*
+ * This function is a general extension append, replace and delete utility.
+ * The precise operation is governed by the 'flags' value. The 'crit' and
+ * 'value' arguments (if relevant) are the extensions internal structure.
+ */
+
+int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
+                    int crit, unsigned long flags)
+{
+    int errcode, extidx = -1;
+    X509_EXTENSION *ext = NULL, *extmp;
+    STACK_OF(X509_EXTENSION) *ret = NULL;
+    unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
+
+    /*
+     * If appending we don't care if it exists, otherwise look for existing
+     * extension.
+     */
+    if (ext_op != X509V3_ADD_APPEND)
+        extidx = X509v3_get_ext_by_NID(*x, nid, -1);
+
+    /* See if extension exists */
+    if (extidx >= 0) {
+        /* If keep existing, nothing to do */
+        if (ext_op == X509V3_ADD_KEEP_EXISTING)
+            return 1;
+        /* If default then its an error */
+        if (ext_op == X509V3_ADD_DEFAULT) {
+            errcode = X509V3_R_EXTENSION_EXISTS;
+            goto err;
+        }
+        /* If delete, just delete it */
+        if (ext_op == X509V3_ADD_DELETE) {
+            if (!sk_X509_EXTENSION_delete(*x, extidx))
+                return -1;
+            return 1;
+        }
+    } else {
+        /*
+         * If replace existing or delete, error since extension must exist
+         */
+        if ((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
+            (ext_op == X509V3_ADD_DELETE)) {
+            errcode = X509V3_R_EXTENSION_NOT_FOUND;
+            goto err;
+        }
+    }
+
+    /*
+     * If we get this far then we have to create an extension: could have
+     * some flags for alternative encoding schemes...
+     */
+
+    ext = X509V3_EXT_i2d(nid, crit, value);
+
+    if (!ext) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CREATING_EXTENSION);
+        return 0;
+    }
+
+    /* If extension exists replace it.. */
+    if (extidx >= 0) {
+        extmp = sk_X509_EXTENSION_value(*x, extidx);
+        X509_EXTENSION_free(extmp);
+        if (!sk_X509_EXTENSION_set(*x, extidx, ext))
+            return -1;
+        return 1;
+    }
+
+    if ((ret = *x) == NULL
+         && (ret = sk_X509_EXTENSION_new_null()) == NULL)
+        goto m_fail;
+    if (!sk_X509_EXTENSION_push(ret, ext))
+        goto m_fail;
+
+    *x = ret;
+    return 1;
+
+ m_fail:
+    if (ret != *x)
+        sk_X509_EXTENSION_free(ret);
+    X509_EXTENSION_free(ext);
+    return -1;
+
+ err:
+    if (!(flags & X509V3_ADD_SILENT))
+        OPENSSL_PUT_ERROR(X509V3, errcode);
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c.grpc_back
new file mode 100644
index 0000000..d5eda3d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_lib.c.grpc_back	
@@ -0,0 +1,371 @@
+/* v3_lib.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* X509 v3 extension utilities */
+
+#include <stdio.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "ext_dat.h"
+static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
+
+static void ext_list_free(X509V3_EXT_METHOD *ext);
+
+static int ext_stack_cmp(const X509V3_EXT_METHOD **a,
+                         const X509V3_EXT_METHOD **b)
+{
+    return ((*a)->ext_nid - (*b)->ext_nid);
+}
+
+int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
+{
+    if (!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_stack_cmp))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        ext_list_free(ext);
+        return 0;
+    }
+    if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        ext_list_free(ext);
+        return 0;
+    }
+    return 1;
+}
+
+static int ext_cmp(const void *void_a, const void *void_b)
+{
+    const X509V3_EXT_METHOD **a = (const X509V3_EXT_METHOD **)void_a;
+    const X509V3_EXT_METHOD **b = (const X509V3_EXT_METHOD **)void_b;
+    return ext_stack_cmp(a, b);
+}
+
+const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
+{
+    X509V3_EXT_METHOD tmp;
+    const X509V3_EXT_METHOD *t = &tmp, *const *ret;
+    size_t idx;
+
+    if (nid < 0)
+        return NULL;
+    tmp.ext_nid = nid;
+    ret =
+        bsearch(&t, standard_exts, STANDARD_EXTENSION_COUNT,
+                sizeof(X509V3_EXT_METHOD *), ext_cmp);
+    if (ret)
+        return *ret;
+    if (!ext_list)
+        return NULL;
+
+    sk_X509V3_EXT_METHOD_sort(ext_list);
+    if (!sk_X509V3_EXT_METHOD_find(ext_list, &idx, &tmp))
+        return NULL;
+    return sk_X509V3_EXT_METHOD_value(ext_list, idx);
+}
+
+const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
+{
+    int nid;
+    if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
+        return NULL;
+    return X509V3_EXT_get_nid(nid);
+}
+
+int X509V3_EXT_free(int nid, void *ext_data)
+{
+    const X509V3_EXT_METHOD *ext_method = X509V3_EXT_get_nid(nid);
+    if (ext_method == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_CANNOT_FIND_FREE_FUNCTION);
+        return 0;
+    }
+
+    if (ext_method->it != NULL)
+        ASN1_item_free(ext_data, ASN1_ITEM_ptr(ext_method->it));
+    else if (ext_method->ext_free != NULL)
+        ext_method->ext_free(ext_data);
+    else {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_CANNOT_FIND_FREE_FUNCTION);
+        return 0;
+    }
+
+    return 1;
+}
+
+int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
+{
+    for (; extlist->ext_nid != -1; extlist++)
+        if (!X509V3_EXT_add(extlist))
+            return 0;
+    return 1;
+}
+
+int X509V3_EXT_add_alias(int nid_to, int nid_from)
+{
+    const X509V3_EXT_METHOD *ext;
+    X509V3_EXT_METHOD *tmpext;
+
+    if (!(ext = X509V3_EXT_get_nid(nid_from))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_EXTENSION_NOT_FOUND);
+        return 0;
+    }
+    if (!
+        (tmpext =
+         (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METHOD)))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    *tmpext = *ext;
+    tmpext->ext_nid = nid_to;
+    tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
+    return X509V3_EXT_add(tmpext);
+}
+
+void X509V3_EXT_cleanup(void)
+{
+    sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
+    ext_list = NULL;
+}
+
+static void ext_list_free(X509V3_EXT_METHOD *ext)
+{
+    if (ext->ext_flags & X509V3_EXT_DYNAMIC)
+        OPENSSL_free(ext);
+}
+
+/*
+ * Legacy function: we don't need to add standard extensions any more because
+ * they are now kept in ext_dat.h.
+ */
+
+int X509V3_add_standard_extensions(void)
+{
+    return 1;
+}
+
+/* Return an extension internal structure */
+
+void *X509V3_EXT_d2i(X509_EXTENSION *ext)
+{
+    const X509V3_EXT_METHOD *method;
+    const unsigned char *p;
+
+    if (!(method = X509V3_EXT_get(ext)))
+        return NULL;
+    p = ext->value->data;
+    if (method->it)
+        return ASN1_item_d2i(NULL, &p, ext->value->length,
+                             ASN1_ITEM_ptr(method->it));
+    return method->d2i(NULL, &p, ext->value->length);
+}
+
+/*
+ * Get critical flag and decoded version of extension from a NID. The "idx"
+ * variable returns the last found extension and can be used to retrieve
+ * multiple extensions of the same NID. However multiple extensions with the
+ * same NID is usually due to a badly encoded certificate so if idx is NULL
+ * we choke if multiple extensions exist. The "crit" variable is set to the
+ * critical value. The return value is the decoded extension or NULL on
+ * error. The actual error can have several different causes, the value of
+ * *crit reflects the cause: >= 0, extension found but not decoded (reflects
+ * critical value). -1 extension not found. -2 extension occurs more than
+ * once.
+ */
+
+void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit,
+                     int *idx)
+{
+    int lastpos;
+    size_t i;
+    X509_EXTENSION *ex, *found_ex = NULL;
+    if (!x) {
+        if (idx)
+            *idx = -1;
+        if (crit)
+            *crit = -1;
+        return NULL;
+    }
+    if (idx)
+        lastpos = *idx + 1;
+    else
+        lastpos = 0;
+    if (lastpos < 0)
+        lastpos = 0;
+    for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
+        ex = sk_X509_EXTENSION_value(x, i);
+        if (OBJ_obj2nid(ex->object) == nid) {
+            if (idx) {
+                *idx = i;
+                found_ex = ex;
+                break;
+            } else if (found_ex) {
+                /* Found more than one */
+                if (crit)
+                    *crit = -2;
+                return NULL;
+            }
+            found_ex = ex;
+        }
+    }
+    if (found_ex) {
+        /* Found it */
+        if (crit)
+            *crit = X509_EXTENSION_get_critical(found_ex);
+        return X509V3_EXT_d2i(found_ex);
+    }
+
+    /* Extension not found */
+    if (idx)
+        *idx = -1;
+    if (crit)
+        *crit = -1;
+    return NULL;
+}
+
+/*
+ * This function is a general extension append, replace and delete utility.
+ * The precise operation is governed by the 'flags' value. The 'crit' and
+ * 'value' arguments (if relevant) are the extensions internal structure.
+ */
+
+int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
+                    int crit, unsigned long flags)
+{
+    int errcode, extidx = -1;
+    X509_EXTENSION *ext = NULL, *extmp;
+    STACK_OF(X509_EXTENSION) *ret = NULL;
+    unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
+
+    /*
+     * If appending we don't care if it exists, otherwise look for existing
+     * extension.
+     */
+    if (ext_op != X509V3_ADD_APPEND)
+        extidx = X509v3_get_ext_by_NID(*x, nid, -1);
+
+    /* See if extension exists */
+    if (extidx >= 0) {
+        /* If keep existing, nothing to do */
+        if (ext_op == X509V3_ADD_KEEP_EXISTING)
+            return 1;
+        /* If default then its an error */
+        if (ext_op == X509V3_ADD_DEFAULT) {
+            errcode = X509V3_R_EXTENSION_EXISTS;
+            goto err;
+        }
+        /* If delete, just delete it */
+        if (ext_op == X509V3_ADD_DELETE) {
+            if (!sk_X509_EXTENSION_delete(*x, extidx))
+                return -1;
+            return 1;
+        }
+    } else {
+        /*
+         * If replace existing or delete, error since extension must exist
+         */
+        if ((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
+            (ext_op == X509V3_ADD_DELETE)) {
+            errcode = X509V3_R_EXTENSION_NOT_FOUND;
+            goto err;
+        }
+    }
+
+    /*
+     * If we get this far then we have to create an extension: could have
+     * some flags for alternative encoding schemes...
+     */
+
+    ext = X509V3_EXT_i2d(nid, crit, value);
+
+    if (!ext) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CREATING_EXTENSION);
+        return 0;
+    }
+
+    /* If extension exists replace it.. */
+    if (extidx >= 0) {
+        extmp = sk_X509_EXTENSION_value(*x, extidx);
+        X509_EXTENSION_free(extmp);
+        if (!sk_X509_EXTENSION_set(*x, extidx, ext))
+            return -1;
+        return 1;
+    }
+
+    if ((ret = *x) == NULL
+         && (ret = sk_X509_EXTENSION_new_null()) == NULL)
+        goto m_fail;
+    if (!sk_X509_EXTENSION_push(ret, ext))
+        goto m_fail;
+
+    *x = ret;
+    return 1;
+
+ m_fail:
+    if (ret != *x)
+        sk_X509_EXTENSION_free(ret);
+    X509_EXTENSION_free(ext);
+    return -1;
+
+ err:
+    if (!(flags & X509V3_ADD_SILENT))
+        OPENSSL_PUT_ERROR(X509V3, errcode);
+    return 0;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c
new file mode 100644
index 0000000..fb3a818
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c	
@@ -0,0 +1,501 @@
+/* v3_ncons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+
+static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *nval);
+static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a,
+                                BIO *bp, int ind);
+static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method,
+                                   STACK_OF(GENERAL_SUBTREE) *trees, BIO *bp,
+                                   int ind, const char *name);
+static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip);
+
+static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc);
+static int nc_match_single(GENERAL_NAME *sub, GENERAL_NAME *gen);
+static int nc_dn(X509_NAME *sub, X509_NAME *nm);
+static int nc_dns(ASN1_IA5STRING *sub, ASN1_IA5STRING *dns);
+static int nc_email(ASN1_IA5STRING *sub, ASN1_IA5STRING *eml);
+static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base);
+
+const X509V3_EXT_METHOD v3_name_constraints = {
+    NID_name_constraints, 0,
+    ASN1_ITEM_ref(NAME_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0, v2i_NAME_CONSTRAINTS,
+    i2r_NAME_CONSTRAINTS, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(GENERAL_SUBTREE) = {
+        ASN1_SIMPLE(GENERAL_SUBTREE, base, GENERAL_NAME),
+        ASN1_IMP_OPT(GENERAL_SUBTREE, minimum, ASN1_INTEGER, 0),
+        ASN1_IMP_OPT(GENERAL_SUBTREE, maximum, ASN1_INTEGER, 1)
+} ASN1_SEQUENCE_END(GENERAL_SUBTREE)
+
+ASN1_SEQUENCE(NAME_CONSTRAINTS) = {
+        ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, permittedSubtrees,
+                                                        GENERAL_SUBTREE, 0),
+        ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, excludedSubtrees,
+                                                        GENERAL_SUBTREE, 1),
+} ASN1_SEQUENCE_END(NAME_CONSTRAINTS)
+
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    size_t i;
+    CONF_VALUE tval, *val;
+    STACK_OF(GENERAL_SUBTREE) **ptree = NULL;
+    NAME_CONSTRAINTS *ncons = NULL;
+    GENERAL_SUBTREE *sub = NULL;
+    ncons = NAME_CONSTRAINTS_new();
+    if (!ncons)
+        goto memerr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!strncmp(val->name, "permitted", 9) && val->name[9]) {
+            ptree = &ncons->permittedSubtrees;
+            tval.name = val->name + 10;
+        } else if (!strncmp(val->name, "excluded", 8) && val->name[8]) {
+            ptree = &ncons->excludedSubtrees;
+            tval.name = val->name + 9;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SYNTAX);
+            goto err;
+        }
+        tval.value = val->value;
+        sub = GENERAL_SUBTREE_new();
+        if (!v2i_GENERAL_NAME_ex(sub->base, method, ctx, &tval, 1))
+            goto err;
+        if (!*ptree)
+            *ptree = sk_GENERAL_SUBTREE_new_null();
+        if (!*ptree || !sk_GENERAL_SUBTREE_push(*ptree, sub))
+            goto memerr;
+        sub = NULL;
+    }
+
+    return ncons;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    if (ncons)
+        NAME_CONSTRAINTS_free(ncons);
+    if (sub)
+        GENERAL_SUBTREE_free(sub);
+
+    return NULL;
+}
+
+static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a,
+                                BIO *bp, int ind)
+{
+    NAME_CONSTRAINTS *ncons = a;
+    do_i2r_name_constraints(method, ncons->permittedSubtrees,
+                            bp, ind, "Permitted");
+    do_i2r_name_constraints(method, ncons->excludedSubtrees,
+                            bp, ind, "Excluded");
+    return 1;
+}
+
+static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method,
+                                   STACK_OF(GENERAL_SUBTREE) *trees,
+                                   BIO *bp, int ind, const char *name)
+{
+    GENERAL_SUBTREE *tree;
+    size_t i;
+    if (sk_GENERAL_SUBTREE_num(trees) > 0)
+        BIO_printf(bp, "%*s%s:\n", ind, "", name);
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(trees); i++) {
+        tree = sk_GENERAL_SUBTREE_value(trees, i);
+        BIO_printf(bp, "%*s", ind + 2, "");
+        if (tree->base->type == GEN_IPADD)
+            print_nc_ipadd(bp, tree->base->d.ip);
+        else
+            GENERAL_NAME_print(bp, tree->base);
+        BIO_puts(bp, "\n");
+    }
+    return 1;
+}
+
+static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip)
+{
+    int i, len;
+    unsigned char *p;
+    p = ip->data;
+    len = ip->length;
+    BIO_puts(bp, "IP:");
+    if (len == 8) {
+        BIO_printf(bp, "%d.%d.%d.%d/%d.%d.%d.%d",
+                   p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
+    } else if (len == 32) {
+        for (i = 0; i < 16; i++) {
+            BIO_printf(bp, "%X", p[0] << 8 | p[1]);
+            p += 2;
+            if (i == 7)
+                BIO_puts(bp, "/");
+            else if (i != 15)
+                BIO_puts(bp, ":");
+        }
+    } else
+        BIO_printf(bp, "IP Address:<invalid>");
+    return 1;
+}
+
+/*-
+ * Check a certificate conforms to a specified set of constraints.
+ * Return values:
+ *   X509_V_OK: All constraints obeyed.
+ *   X509_V_ERR_PERMITTED_VIOLATION: Permitted subtree violation.
+ *   X509_V_ERR_EXCLUDED_VIOLATION: Excluded subtree violation.
+ *   X509_V_ERR_SUBTREE_MINMAX: Min or max values present and matching type.
+ *   X509_V_ERR_UNSPECIFIED: Unspecified error.
+ *   X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: Unsupported constraint type.
+ *   X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: Bad or unsupported constraint
+ *     syntax.
+ *   X509_V_ERR_UNSUPPORTED_NAME_SYNTAX: Bad or unsupported syntax of name.
+ */
+
+int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc)
+{
+    int r, i;
+    size_t j;
+    X509_NAME *nm;
+
+    nm = X509_get_subject_name(x);
+
+    /* Guard against certificates with an excessive number of names or
+     * constraints causing a computationally expensive name constraints
+     * check. */
+    size_t name_count =
+        X509_NAME_entry_count(nm) + sk_GENERAL_NAME_num(x->altname);
+    size_t constraint_count = sk_GENERAL_SUBTREE_num(nc->permittedSubtrees) +
+                              sk_GENERAL_SUBTREE_num(nc->excludedSubtrees);
+    size_t check_count = constraint_count * name_count;
+    if (name_count < (size_t)X509_NAME_entry_count(nm) ||
+        constraint_count < sk_GENERAL_SUBTREE_num(nc->permittedSubtrees) ||
+        (constraint_count && check_count / constraint_count != name_count) ||
+        check_count > 1 << 20) {
+      return X509_V_ERR_UNSPECIFIED;
+    }
+
+    if (X509_NAME_entry_count(nm) > 0) {
+        GENERAL_NAME gntmp;
+        gntmp.type = GEN_DIRNAME;
+        gntmp.d.directoryName = nm;
+
+        r = nc_match(&gntmp, nc);
+
+        if (r != X509_V_OK)
+            return r;
+
+        gntmp.type = GEN_EMAIL;
+
+        /* Process any email address attributes in subject name */
+
+        for (i = -1;;) {
+            X509_NAME_ENTRY *ne;
+            i = X509_NAME_get_index_by_NID(nm, NID_pkcs9_emailAddress, i);
+            if (i == -1)
+                break;
+            ne = X509_NAME_get_entry(nm, i);
+            gntmp.d.rfc822Name = X509_NAME_ENTRY_get_data(ne);
+            if (gntmp.d.rfc822Name->type != V_ASN1_IA5STRING)
+                return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+
+            r = nc_match(&gntmp, nc);
+
+            if (r != X509_V_OK)
+                return r;
+        }
+
+    }
+
+    for (j = 0; j < sk_GENERAL_NAME_num(x->altname); j++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(x->altname, j);
+        r = nc_match(gen, nc);
+        if (r != X509_V_OK)
+            return r;
+    }
+
+    return X509_V_OK;
+
+}
+
+static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc)
+{
+    GENERAL_SUBTREE *sub;
+    int r, match = 0;
+    size_t i;
+
+    /*
+     * Permitted subtrees: if any subtrees exist of matching the type at
+     * least one subtree must match.
+     */
+
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->permittedSubtrees); i++) {
+        sub = sk_GENERAL_SUBTREE_value(nc->permittedSubtrees, i);
+        if (gen->type != sub->base->type)
+            continue;
+        if (sub->minimum || sub->maximum)
+            return X509_V_ERR_SUBTREE_MINMAX;
+        /* If we already have a match don't bother trying any more */
+        if (match == 2)
+            continue;
+        if (match == 0)
+            match = 1;
+        r = nc_match_single(gen, sub->base);
+        if (r == X509_V_OK)
+            match = 2;
+        else if (r != X509_V_ERR_PERMITTED_VIOLATION)
+            return r;
+    }
+
+    if (match == 1)
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    /* Excluded subtrees: must not match any of these */
+
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->excludedSubtrees); i++) {
+        sub = sk_GENERAL_SUBTREE_value(nc->excludedSubtrees, i);
+        if (gen->type != sub->base->type)
+            continue;
+        if (sub->minimum || sub->maximum)
+            return X509_V_ERR_SUBTREE_MINMAX;
+
+        r = nc_match_single(gen, sub->base);
+        if (r == X509_V_OK)
+            return X509_V_ERR_EXCLUDED_VIOLATION;
+        else if (r != X509_V_ERR_PERMITTED_VIOLATION)
+            return r;
+
+    }
+
+    return X509_V_OK;
+
+}
+
+static int nc_match_single(GENERAL_NAME *gen, GENERAL_NAME *base)
+{
+    switch (base->type) {
+    case GEN_DIRNAME:
+        return nc_dn(gen->d.directoryName, base->d.directoryName);
+
+    case GEN_DNS:
+        return nc_dns(gen->d.dNSName, base->d.dNSName);
+
+    case GEN_EMAIL:
+        return nc_email(gen->d.rfc822Name, base->d.rfc822Name);
+
+    case GEN_URI:
+        return nc_uri(gen->d.uniformResourceIdentifier,
+                      base->d.uniformResourceIdentifier);
+
+    default:
+        return X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE;
+    }
+
+}
+
+/*
+ * directoryName name constraint matching. The canonical encoding of
+ * X509_NAME makes this comparison easy. It is matched if the subtree is a
+ * subset of the name.
+ */
+
+static int nc_dn(X509_NAME *nm, X509_NAME *base)
+{
+    /* Ensure canonical encodings are up to date.  */
+    if (nm->modified && i2d_X509_NAME(nm, NULL) < 0)
+        return X509_V_ERR_OUT_OF_MEM;
+    if (base->modified && i2d_X509_NAME(base, NULL) < 0)
+        return X509_V_ERR_OUT_OF_MEM;
+    if (base->canon_enclen > nm->canon_enclen)
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    if (OPENSSL_memcmp(base->canon_enc, nm->canon_enc, base->canon_enclen))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    return X509_V_OK;
+}
+
+static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base)
+{
+    char *baseptr = (char *)base->data;
+    char *dnsptr = (char *)dns->data;
+    /* Empty matches everything */
+    if (!*baseptr)
+        return X509_V_OK;
+    /*
+     * Otherwise can add zero or more components on the left so compare RHS
+     * and if dns is longer and expect '.' as preceding character.
+     */
+    if (dns->length > base->length) {
+        dnsptr += dns->length - base->length;
+        if (*baseptr != '.' && dnsptr[-1] != '.')
+            return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    if (OPENSSL_strcasecmp(baseptr, dnsptr))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
+
+static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base)
+{
+    const char *baseptr = (char *)base->data;
+    const char *emlptr = (char *)eml->data;
+
+    const char *baseat = strchr(baseptr, '@');
+    const char *emlat = strchr(emlptr, '@');
+    if (!emlat)
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+    /* Special case: inital '.' is RHS match */
+    if (!baseat && (*baseptr == '.')) {
+        if (eml->length > base->length) {
+            emlptr += eml->length - base->length;
+            if (!OPENSSL_strcasecmp(baseptr, emlptr))
+                return X509_V_OK;
+        }
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    /* If we have anything before '@' match local part */
+
+    if (baseat) {
+        if (baseat != baseptr) {
+            if ((baseat - baseptr) != (emlat - emlptr))
+                return X509_V_ERR_PERMITTED_VIOLATION;
+            /* Case sensitive match of local part */
+            if (strncmp(baseptr, emlptr, emlat - emlptr))
+                return X509_V_ERR_PERMITTED_VIOLATION;
+        }
+        /* Position base after '@' */
+        baseptr = baseat + 1;
+    }
+    emlptr = emlat + 1;
+    /* Just have hostname left to match: case insensitive */
+    if (OPENSSL_strcasecmp(baseptr, emlptr))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
+
+static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base)
+{
+    const char *baseptr = (char *)base->data;
+    const char *hostptr = (char *)uri->data;
+    const char *p = strchr(hostptr, ':');
+    int hostlen;
+    /* Check for foo:// and skip past it */
+    if (!p || (p[1] != '/') || (p[2] != '/'))
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+    hostptr = p + 3;
+
+    /* Determine length of hostname part of URI */
+
+    /* Look for a port indicator as end of hostname first */
+
+    p = strchr(hostptr, ':');
+    /* Otherwise look for trailing slash */
+    if (!p)
+        p = strchr(hostptr, '/');
+
+    if (!p)
+        hostlen = strlen(hostptr);
+    else
+        hostlen = p - hostptr;
+
+    if (hostlen == 0)
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+
+    /* Special case: inital '.' is RHS match */
+    if (*baseptr == '.') {
+        if (hostlen > base->length) {
+            p = hostptr + hostlen - base->length;
+            if (!OPENSSL_strncasecmp(p, baseptr, base->length))
+                return X509_V_OK;
+        }
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    if ((base->length != (int)hostlen)
+        || OPENSSL_strncasecmp(hostptr, baseptr, hostlen))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c.grpc_back
new file mode 100644
index 0000000..593a520
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ncons.c.grpc_back	
@@ -0,0 +1,501 @@
+/* v3_ncons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+
+static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx,
+                                  STACK_OF(CONF_VALUE) *nval);
+static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a,
+                                BIO *bp, int ind);
+static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method,
+                                   STACK_OF(GENERAL_SUBTREE) *trees, BIO *bp,
+                                   int ind, const char *name);
+static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip);
+
+static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc);
+static int nc_match_single(GENERAL_NAME *sub, GENERAL_NAME *gen);
+static int nc_dn(X509_NAME *sub, X509_NAME *nm);
+static int nc_dns(ASN1_IA5STRING *sub, ASN1_IA5STRING *dns);
+static int nc_email(ASN1_IA5STRING *sub, ASN1_IA5STRING *eml);
+static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base);
+
+const X509V3_EXT_METHOD v3_name_constraints = {
+    NID_name_constraints, 0,
+    ASN1_ITEM_ref(NAME_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    0, v2i_NAME_CONSTRAINTS,
+    i2r_NAME_CONSTRAINTS, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(GENERAL_SUBTREE) = {
+        ASN1_SIMPLE(GENERAL_SUBTREE, base, GENERAL_NAME),
+        ASN1_IMP_OPT(GENERAL_SUBTREE, minimum, ASN1_INTEGER, 0),
+        ASN1_IMP_OPT(GENERAL_SUBTREE, maximum, ASN1_INTEGER, 1)
+} ASN1_SEQUENCE_END(GENERAL_SUBTREE)
+
+ASN1_SEQUENCE(NAME_CONSTRAINTS) = {
+        ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, permittedSubtrees,
+                                                        GENERAL_SUBTREE, 0),
+        ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, excludedSubtrees,
+                                                        GENERAL_SUBTREE, 1),
+} ASN1_SEQUENCE_END(NAME_CONSTRAINTS)
+
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    size_t i;
+    CONF_VALUE tval, *val;
+    STACK_OF(GENERAL_SUBTREE) **ptree = NULL;
+    NAME_CONSTRAINTS *ncons = NULL;
+    GENERAL_SUBTREE *sub = NULL;
+    ncons = NAME_CONSTRAINTS_new();
+    if (!ncons)
+        goto memerr;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!strncmp(val->name, "permitted", 9) && val->name[9]) {
+            ptree = &ncons->permittedSubtrees;
+            tval.name = val->name + 10;
+        } else if (!strncmp(val->name, "excluded", 8) && val->name[8]) {
+            ptree = &ncons->excludedSubtrees;
+            tval.name = val->name + 9;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SYNTAX);
+            goto err;
+        }
+        tval.value = val->value;
+        sub = GENERAL_SUBTREE_new();
+        if (!v2i_GENERAL_NAME_ex(sub->base, method, ctx, &tval, 1))
+            goto err;
+        if (!*ptree)
+            *ptree = sk_GENERAL_SUBTREE_new_null();
+        if (!*ptree || !sk_GENERAL_SUBTREE_push(*ptree, sub))
+            goto memerr;
+        sub = NULL;
+    }
+
+    return ncons;
+
+ memerr:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+ err:
+    if (ncons)
+        NAME_CONSTRAINTS_free(ncons);
+    if (sub)
+        GENERAL_SUBTREE_free(sub);
+
+    return NULL;
+}
+
+static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a,
+                                BIO *bp, int ind)
+{
+    NAME_CONSTRAINTS *ncons = a;
+    do_i2r_name_constraints(method, ncons->permittedSubtrees,
+                            bp, ind, "Permitted");
+    do_i2r_name_constraints(method, ncons->excludedSubtrees,
+                            bp, ind, "Excluded");
+    return 1;
+}
+
+static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method,
+                                   STACK_OF(GENERAL_SUBTREE) *trees,
+                                   BIO *bp, int ind, const char *name)
+{
+    GENERAL_SUBTREE *tree;
+    size_t i;
+    if (sk_GENERAL_SUBTREE_num(trees) > 0)
+        BIO_printf(bp, "%*s%s:\n", ind, "", name);
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(trees); i++) {
+        tree = sk_GENERAL_SUBTREE_value(trees, i);
+        BIO_printf(bp, "%*s", ind + 2, "");
+        if (tree->base->type == GEN_IPADD)
+            print_nc_ipadd(bp, tree->base->d.ip);
+        else
+            GENERAL_NAME_print(bp, tree->base);
+        BIO_puts(bp, "\n");
+    }
+    return 1;
+}
+
+static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip)
+{
+    int i, len;
+    unsigned char *p;
+    p = ip->data;
+    len = ip->length;
+    BIO_puts(bp, "IP:");
+    if (len == 8) {
+        BIO_printf(bp, "%d.%d.%d.%d/%d.%d.%d.%d",
+                   p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
+    } else if (len == 32) {
+        for (i = 0; i < 16; i++) {
+            BIO_printf(bp, "%X", p[0] << 8 | p[1]);
+            p += 2;
+            if (i == 7)
+                BIO_puts(bp, "/");
+            else if (i != 15)
+                BIO_puts(bp, ":");
+        }
+    } else
+        BIO_printf(bp, "IP Address:<invalid>");
+    return 1;
+}
+
+/*-
+ * Check a certificate conforms to a specified set of constraints.
+ * Return values:
+ *   X509_V_OK: All constraints obeyed.
+ *   X509_V_ERR_PERMITTED_VIOLATION: Permitted subtree violation.
+ *   X509_V_ERR_EXCLUDED_VIOLATION: Excluded subtree violation.
+ *   X509_V_ERR_SUBTREE_MINMAX: Min or max values present and matching type.
+ *   X509_V_ERR_UNSPECIFIED: Unspecified error.
+ *   X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: Unsupported constraint type.
+ *   X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: Bad or unsupported constraint
+ *     syntax.
+ *   X509_V_ERR_UNSUPPORTED_NAME_SYNTAX: Bad or unsupported syntax of name.
+ */
+
+int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc)
+{
+    int r, i;
+    size_t j;
+    X509_NAME *nm;
+
+    nm = X509_get_subject_name(x);
+
+    /* Guard against certificates with an excessive number of names or
+     * constraints causing a computationally expensive name constraints
+     * check. */
+    size_t name_count =
+        X509_NAME_entry_count(nm) + sk_GENERAL_NAME_num(x->altname);
+    size_t constraint_count = sk_GENERAL_SUBTREE_num(nc->permittedSubtrees) +
+                              sk_GENERAL_SUBTREE_num(nc->excludedSubtrees);
+    size_t check_count = constraint_count * name_count;
+    if (name_count < (size_t)X509_NAME_entry_count(nm) ||
+        constraint_count < sk_GENERAL_SUBTREE_num(nc->permittedSubtrees) ||
+        (constraint_count && check_count / constraint_count != name_count) ||
+        check_count > 1 << 20) {
+      return X509_V_ERR_UNSPECIFIED;
+    }
+
+    if (X509_NAME_entry_count(nm) > 0) {
+        GENERAL_NAME gntmp;
+        gntmp.type = GEN_DIRNAME;
+        gntmp.d.directoryName = nm;
+
+        r = nc_match(&gntmp, nc);
+
+        if (r != X509_V_OK)
+            return r;
+
+        gntmp.type = GEN_EMAIL;
+
+        /* Process any email address attributes in subject name */
+
+        for (i = -1;;) {
+            X509_NAME_ENTRY *ne;
+            i = X509_NAME_get_index_by_NID(nm, NID_pkcs9_emailAddress, i);
+            if (i == -1)
+                break;
+            ne = X509_NAME_get_entry(nm, i);
+            gntmp.d.rfc822Name = X509_NAME_ENTRY_get_data(ne);
+            if (gntmp.d.rfc822Name->type != V_ASN1_IA5STRING)
+                return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+
+            r = nc_match(&gntmp, nc);
+
+            if (r != X509_V_OK)
+                return r;
+        }
+
+    }
+
+    for (j = 0; j < sk_GENERAL_NAME_num(x->altname); j++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(x->altname, j);
+        r = nc_match(gen, nc);
+        if (r != X509_V_OK)
+            return r;
+    }
+
+    return X509_V_OK;
+
+}
+
+static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc)
+{
+    GENERAL_SUBTREE *sub;
+    int r, match = 0;
+    size_t i;
+
+    /*
+     * Permitted subtrees: if any subtrees exist of matching the type at
+     * least one subtree must match.
+     */
+
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->permittedSubtrees); i++) {
+        sub = sk_GENERAL_SUBTREE_value(nc->permittedSubtrees, i);
+        if (gen->type != sub->base->type)
+            continue;
+        if (sub->minimum || sub->maximum)
+            return X509_V_ERR_SUBTREE_MINMAX;
+        /* If we already have a match don't bother trying any more */
+        if (match == 2)
+            continue;
+        if (match == 0)
+            match = 1;
+        r = nc_match_single(gen, sub->base);
+        if (r == X509_V_OK)
+            match = 2;
+        else if (r != X509_V_ERR_PERMITTED_VIOLATION)
+            return r;
+    }
+
+    if (match == 1)
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    /* Excluded subtrees: must not match any of these */
+
+    for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->excludedSubtrees); i++) {
+        sub = sk_GENERAL_SUBTREE_value(nc->excludedSubtrees, i);
+        if (gen->type != sub->base->type)
+            continue;
+        if (sub->minimum || sub->maximum)
+            return X509_V_ERR_SUBTREE_MINMAX;
+
+        r = nc_match_single(gen, sub->base);
+        if (r == X509_V_OK)
+            return X509_V_ERR_EXCLUDED_VIOLATION;
+        else if (r != X509_V_ERR_PERMITTED_VIOLATION)
+            return r;
+
+    }
+
+    return X509_V_OK;
+
+}
+
+static int nc_match_single(GENERAL_NAME *gen, GENERAL_NAME *base)
+{
+    switch (base->type) {
+    case GEN_DIRNAME:
+        return nc_dn(gen->d.directoryName, base->d.directoryName);
+
+    case GEN_DNS:
+        return nc_dns(gen->d.dNSName, base->d.dNSName);
+
+    case GEN_EMAIL:
+        return nc_email(gen->d.rfc822Name, base->d.rfc822Name);
+
+    case GEN_URI:
+        return nc_uri(gen->d.uniformResourceIdentifier,
+                      base->d.uniformResourceIdentifier);
+
+    default:
+        return X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE;
+    }
+
+}
+
+/*
+ * directoryName name constraint matching. The canonical encoding of
+ * X509_NAME makes this comparison easy. It is matched if the subtree is a
+ * subset of the name.
+ */
+
+static int nc_dn(X509_NAME *nm, X509_NAME *base)
+{
+    /* Ensure canonical encodings are up to date.  */
+    if (nm->modified && i2d_X509_NAME(nm, NULL) < 0)
+        return X509_V_ERR_OUT_OF_MEM;
+    if (base->modified && i2d_X509_NAME(base, NULL) < 0)
+        return X509_V_ERR_OUT_OF_MEM;
+    if (base->canon_enclen > nm->canon_enclen)
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    if (OPENSSL_memcmp(base->canon_enc, nm->canon_enc, base->canon_enclen))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    return X509_V_OK;
+}
+
+static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base)
+{
+    char *baseptr = (char *)base->data;
+    char *dnsptr = (char *)dns->data;
+    /* Empty matches everything */
+    if (!*baseptr)
+        return X509_V_OK;
+    /*
+     * Otherwise can add zero or more components on the left so compare RHS
+     * and if dns is longer and expect '.' as preceding character.
+     */
+    if (dns->length > base->length) {
+        dnsptr += dns->length - base->length;
+        if (*baseptr != '.' && dnsptr[-1] != '.')
+            return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    if (OPENSSL_strcasecmp(baseptr, dnsptr))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
+
+static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base)
+{
+    const char *baseptr = (char *)base->data;
+    const char *emlptr = (char *)eml->data;
+
+    const char *baseat = strchr(baseptr, '@');
+    const char *emlat = strchr(emlptr, '@');
+    if (!emlat)
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+    /* Special case: inital '.' is RHS match */
+    if (!baseat && (*baseptr == '.')) {
+        if (eml->length > base->length) {
+            emlptr += eml->length - base->length;
+            if (!OPENSSL_strcasecmp(baseptr, emlptr))
+                return X509_V_OK;
+        }
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    /* If we have anything before '@' match local part */
+
+    if (baseat) {
+        if (baseat != baseptr) {
+            if ((baseat - baseptr) != (emlat - emlptr))
+                return X509_V_ERR_PERMITTED_VIOLATION;
+            /* Case sensitive match of local part */
+            if (strncmp(baseptr, emlptr, emlat - emlptr))
+                return X509_V_ERR_PERMITTED_VIOLATION;
+        }
+        /* Position base after '@' */
+        baseptr = baseat + 1;
+    }
+    emlptr = emlat + 1;
+    /* Just have hostname left to match: case insensitive */
+    if (OPENSSL_strcasecmp(baseptr, emlptr))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
+
+static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base)
+{
+    const char *baseptr = (char *)base->data;
+    const char *hostptr = (char *)uri->data;
+    const char *p = strchr(hostptr, ':');
+    int hostlen;
+    /* Check for foo:// and skip past it */
+    if (!p || (p[1] != '/') || (p[2] != '/'))
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+    hostptr = p + 3;
+
+    /* Determine length of hostname part of URI */
+
+    /* Look for a port indicator as end of hostname first */
+
+    p = strchr(hostptr, ':');
+    /* Otherwise look for trailing slash */
+    if (!p)
+        p = strchr(hostptr, '/');
+
+    if (!p)
+        hostlen = strlen(hostptr);
+    else
+        hostlen = p - hostptr;
+
+    if (hostlen == 0)
+        return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
+
+    /* Special case: inital '.' is RHS match */
+    if (*baseptr == '.') {
+        if (hostlen > base->length) {
+            p = hostptr + hostlen - base->length;
+            if (!OPENSSL_strncasecmp(p, baseptr, base->length))
+                return X509_V_OK;
+        }
+        return X509_V_ERR_PERMITTED_VIOLATION;
+    }
+
+    if ((base->length != (int)hostlen)
+        || OPENSSL_strncasecmp(hostptr, baseptr, hostlen))
+        return X509_V_ERR_PERMITTED_VIOLATION;
+
+    return X509_V_OK;
+
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c
new file mode 100644
index 0000000..b3bdee3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl_grpc/x509v3.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/nid.h>
+
+/*
+ * OCSP extensions and a couple of CRL entry extensions
+ */
+
+static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *nonce,
+                            BIO *out, int indent);
+
+static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                            void *nocheck, BIO *out, int indent);
+static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                              X509V3_CTX *ctx, const char *str);
+
+const X509V3_EXT_METHOD v3_crl_invdate = {
+    NID_invalidity_date, 0, ASN1_ITEM_ref(ASN1_GENERALIZEDTIME),
+    0, 0, 0, 0,
+    0, 0,
+    0, 0,
+    i2r_ocsp_acutoff, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_ocsp_nocheck = {
+    NID_id_pkix_OCSP_noCheck, 0, ASN1_ITEM_ref(ASN1_NULL),
+    0, 0, 0, 0,
+    0, s2i_ocsp_nocheck,
+    0, 0,
+    i2r_ocsp_nocheck, 0,
+    NULL
+};
+
+static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *cutoff,
+                            BIO *bp, int ind)
+{
+    if (BIO_printf(bp, "%*s", ind, "") <= 0)
+        return 0;
+    if (!ASN1_GENERALIZEDTIME_print(bp, cutoff))
+        return 0;
+    return 1;
+}
+
+/* Nocheck is just a single NULL. Don't print anything and always set it */
+
+static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method, void *nocheck,
+                            BIO *out, int indent)
+{
+    return 1;
+}
+
+static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                              X509V3_CTX *ctx, const char *str)
+{
+    return ASN1_NULL_new();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c.grpc_back
new file mode 100644
index 0000000..c63646a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_ocsp.c.grpc_back	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/x509v3.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/nid.h>
+
+/*
+ * OCSP extensions and a couple of CRL entry extensions
+ */
+
+static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *nonce,
+                            BIO *out, int indent);
+
+static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                            void *nocheck, BIO *out, int indent);
+static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                              X509V3_CTX *ctx, const char *str);
+
+const X509V3_EXT_METHOD v3_crl_invdate = {
+    NID_invalidity_date, 0, ASN1_ITEM_ref(ASN1_GENERALIZEDTIME),
+    0, 0, 0, 0,
+    0, 0,
+    0, 0,
+    i2r_ocsp_acutoff, 0,
+    NULL
+};
+
+const X509V3_EXT_METHOD v3_ocsp_nocheck = {
+    NID_id_pkix_OCSP_noCheck, 0, ASN1_ITEM_ref(ASN1_NULL),
+    0, 0, 0, 0,
+    0, s2i_ocsp_nocheck,
+    0, 0,
+    i2r_ocsp_nocheck, 0,
+    NULL
+};
+
+static int i2r_ocsp_acutoff(const X509V3_EXT_METHOD *method, void *cutoff,
+                            BIO *bp, int ind)
+{
+    if (BIO_printf(bp, "%*s", ind, "") <= 0)
+        return 0;
+    if (!ASN1_GENERALIZEDTIME_print(bp, cutoff))
+        return 0;
+    return 1;
+}
+
+/* Nocheck is just a single NULL. Don't print anything and always set it */
+
+static int i2r_ocsp_nocheck(const X509V3_EXT_METHOD *method, void *nocheck,
+                            BIO *out, int indent)
+{
+    return 1;
+}
+
+static void *s2i_ocsp_nocheck(const X509V3_EXT_METHOD *method,
+                              X509V3_CTX *ctx, const char *str)
+{
+    return ASN1_NULL_new();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c
new file mode 100644
index 0000000..9aedb25
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c	
@@ -0,0 +1,288 @@
+/* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */
+/*
+ * Contributed to the OpenSSL Project 2004 by Richard Levitte
+ * (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
+                   BIO *out, int indent);
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str);
+
+const X509V3_EXT_METHOD v3_pci =
+    { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
+    0, 0, 0, 0,
+    0, 0,
+    NULL, NULL,
+    (X509V3_EXT_I2R)i2r_pci,
+    (X509V3_EXT_R2I)r2i_pci,
+    NULL,
+};
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
+                   BIO *out, int indent)
+{
+    BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
+    if (pci->pcPathLengthConstraint)
+        i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
+    else
+        BIO_printf(out, "infinite");
+    BIO_puts(out, "\n");
+    BIO_printf(out, "%*sPolicy Language: ", indent, "");
+    i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
+    BIO_puts(out, "\n");
+    if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
+        BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
+                   pci->proxyPolicy->policy->data);
+    return 1;
+}
+
+static int process_pci_value(CONF_VALUE *val,
+                             ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
+                             ASN1_OCTET_STRING **policy)
+{
+    int free_policy = 0;
+
+    if (strcmp(val->name, "language") == 0) {
+        if (*language) {
+            OPENSSL_PUT_ERROR(X509V3,
+                              X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
+            X509V3_conf_err(val);
+            return 0;
+        }
+        if (!(*language = OBJ_txt2obj(val->value, 0))) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return 0;
+        }
+    } else if (strcmp(val->name, "pathlen") == 0) {
+        if (*pathlen) {
+            OPENSSL_PUT_ERROR(X509V3,
+                              X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
+            X509V3_conf_err(val);
+            return 0;
+        }
+        if (!X509V3_get_value_int(val, pathlen)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_POLICY_PATH_LENGTH);
+            X509V3_conf_err(val);
+            return 0;
+        }
+    } else if (strcmp(val->name, "policy") == 0) {
+        unsigned char *tmp_data = NULL;
+        long val_len;
+        if (!*policy) {
+            *policy = ASN1_OCTET_STRING_new();
+            if (!*policy) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                return 0;
+            }
+            free_policy = 1;
+        }
+        if (strncmp(val->value, "hex:", 4) == 0) {
+            unsigned char *tmp_data2 =
+                x509v3_hex_to_bytes(val->value + 4, &val_len);
+
+            if (!tmp_data2) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_HEX_DIGIT);
+                X509V3_conf_err(val);
+                goto err;
+            }
+
+            tmp_data = OPENSSL_realloc((*policy)->data,
+                                       (*policy)->length + val_len + 1);
+            if (tmp_data) {
+                (*policy)->data = tmp_data;
+                OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
+                       tmp_data2, val_len);
+                (*policy)->length += val_len;
+                (*policy)->data[(*policy)->length] = '\0';
+            } else {
+                OPENSSL_free(tmp_data2);
+                /*
+                 * realloc failure implies the original data space is b0rked
+                 * too!
+                 */
+                (*policy)->data = NULL;
+                (*policy)->length = 0;
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                goto err;
+            }
+            OPENSSL_free(tmp_data2);
+        } else if (strncmp(val->value, "text:", 5) == 0) {
+            val_len = strlen(val->value + 5);
+            tmp_data = OPENSSL_realloc((*policy)->data,
+                                       (*policy)->length + val_len + 1);
+            if (tmp_data) {
+                (*policy)->data = tmp_data;
+                OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
+                       val->value + 5, val_len);
+                (*policy)->length += val_len;
+                (*policy)->data[(*policy)->length] = '\0';
+            } else {
+                /*
+                 * realloc failure implies the original data space is b0rked
+                 * too!
+                 */
+                (*policy)->data = NULL;
+                (*policy)->length = 0;
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                goto err;
+            }
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
+            X509V3_conf_err(val);
+            goto err;
+        }
+        if (!tmp_data) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    return 1;
+ err:
+    if (free_policy) {
+        ASN1_OCTET_STRING_free(*policy);
+        *policy = NULL;
+    }
+    return 0;
+}
+
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *value)
+{
+    PROXY_CERT_INFO_EXTENSION *pci = NULL;
+    STACK_OF(CONF_VALUE) *vals;
+    ASN1_OBJECT *language = NULL;
+    ASN1_INTEGER *pathlen = NULL;
+    ASN1_OCTET_STRING *policy = NULL;
+    size_t i, j;
+    int nid;
+
+    vals = X509V3_parse_list(value);
+    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
+        CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
+        if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_PROXY_POLICY_SETTING);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+        if (*cnf->name == '@') {
+            STACK_OF(CONF_VALUE) *sect;
+            int success_p = 1;
+
+            sect = X509V3_get_section(ctx, cnf->name + 1);
+            if (!sect) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
+                success_p =
+                    process_pci_value(sk_CONF_VALUE_value(sect, j),
+                                      &language, &pathlen, &policy);
+            }
+            X509V3_section_free(ctx, sect);
+            if (!success_p)
+                goto err;
+        } else {
+            if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+        }
+    }
+
+    /* Language is mandatory */
+    if (!language) {
+        OPENSSL_PUT_ERROR(X509V3,
+                          X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
+        goto err;
+    }
+    nid = OBJ_obj2nid(language);
+    if ((nid == NID_Independent || nid == NID_id_ppl_inheritAll) && policy) {
+        OPENSSL_PUT_ERROR(X509V3,
+                          X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
+        goto err;
+    }
+
+    pci = PROXY_CERT_INFO_EXTENSION_new();
+    if (!pci) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    pci->proxyPolicy->policyLanguage = language;
+    language = NULL;
+    pci->proxyPolicy->policy = policy;
+    policy = NULL;
+    pci->pcPathLengthConstraint = pathlen;
+    pathlen = NULL;
+    goto end;
+ err:
+    if (language) {
+        ASN1_OBJECT_free(language);
+        language = NULL;
+    }
+    if (pathlen) {
+        ASN1_INTEGER_free(pathlen);
+        pathlen = NULL;
+    }
+    if (policy) {
+        ASN1_OCTET_STRING_free(policy);
+        policy = NULL;
+    }
+    if (pci) {
+        PROXY_CERT_INFO_EXTENSION_free(pci);
+        pci = NULL;
+    }
+ end:
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    return pci;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c.grpc_back
new file mode 100644
index 0000000..f9031c0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pci.c.grpc_back	
@@ -0,0 +1,288 @@
+/* v3_pci.c -*- mode:C; c-file-style: "eay" -*- */
+/*
+ * Contributed to the OpenSSL Project 2004 by Richard Levitte
+ * (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *ext,
+                   BIO *out, int indent);
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *str);
+
+const X509V3_EXT_METHOD v3_pci =
+    { NID_proxyCertInfo, 0, ASN1_ITEM_ref(PROXY_CERT_INFO_EXTENSION),
+    0, 0, 0, 0,
+    0, 0,
+    NULL, NULL,
+    (X509V3_EXT_I2R)i2r_pci,
+    (X509V3_EXT_R2I)r2i_pci,
+    NULL,
+};
+
+static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
+                   BIO *out, int indent)
+{
+    BIO_printf(out, "%*sPath Length Constraint: ", indent, "");
+    if (pci->pcPathLengthConstraint)
+        i2a_ASN1_INTEGER(out, pci->pcPathLengthConstraint);
+    else
+        BIO_printf(out, "infinite");
+    BIO_puts(out, "\n");
+    BIO_printf(out, "%*sPolicy Language: ", indent, "");
+    i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
+    BIO_puts(out, "\n");
+    if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
+        BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
+                   pci->proxyPolicy->policy->data);
+    return 1;
+}
+
+static int process_pci_value(CONF_VALUE *val,
+                             ASN1_OBJECT **language, ASN1_INTEGER **pathlen,
+                             ASN1_OCTET_STRING **policy)
+{
+    int free_policy = 0;
+
+    if (strcmp(val->name, "language") == 0) {
+        if (*language) {
+            OPENSSL_PUT_ERROR(X509V3,
+                              X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED);
+            X509V3_conf_err(val);
+            return 0;
+        }
+        if (!(*language = OBJ_txt2obj(val->value, 0))) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return 0;
+        }
+    } else if (strcmp(val->name, "pathlen") == 0) {
+        if (*pathlen) {
+            OPENSSL_PUT_ERROR(X509V3,
+                              X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED);
+            X509V3_conf_err(val);
+            return 0;
+        }
+        if (!X509V3_get_value_int(val, pathlen)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_POLICY_PATH_LENGTH);
+            X509V3_conf_err(val);
+            return 0;
+        }
+    } else if (strcmp(val->name, "policy") == 0) {
+        unsigned char *tmp_data = NULL;
+        long val_len;
+        if (!*policy) {
+            *policy = ASN1_OCTET_STRING_new();
+            if (!*policy) {
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                return 0;
+            }
+            free_policy = 1;
+        }
+        if (strncmp(val->value, "hex:", 4) == 0) {
+            unsigned char *tmp_data2 =
+                x509v3_hex_to_bytes(val->value + 4, &val_len);
+
+            if (!tmp_data2) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_HEX_DIGIT);
+                X509V3_conf_err(val);
+                goto err;
+            }
+
+            tmp_data = OPENSSL_realloc((*policy)->data,
+                                       (*policy)->length + val_len + 1);
+            if (tmp_data) {
+                (*policy)->data = tmp_data;
+                OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
+                       tmp_data2, val_len);
+                (*policy)->length += val_len;
+                (*policy)->data[(*policy)->length] = '\0';
+            } else {
+                OPENSSL_free(tmp_data2);
+                /*
+                 * realloc failure implies the original data space is b0rked
+                 * too!
+                 */
+                (*policy)->data = NULL;
+                (*policy)->length = 0;
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                goto err;
+            }
+            OPENSSL_free(tmp_data2);
+        } else if (strncmp(val->value, "text:", 5) == 0) {
+            val_len = strlen(val->value + 5);
+            tmp_data = OPENSSL_realloc((*policy)->data,
+                                       (*policy)->length + val_len + 1);
+            if (tmp_data) {
+                (*policy)->data = tmp_data;
+                OPENSSL_memcpy(&(*policy)->data[(*policy)->length],
+                       val->value + 5, val_len);
+                (*policy)->length += val_len;
+                (*policy)->data[(*policy)->length] = '\0';
+            } else {
+                /*
+                 * realloc failure implies the original data space is b0rked
+                 * too!
+                 */
+                (*policy)->data = NULL;
+                (*policy)->length = 0;
+                OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+                X509V3_conf_err(val);
+                goto err;
+            }
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INCORRECT_POLICY_SYNTAX_TAG);
+            X509V3_conf_err(val);
+            goto err;
+        }
+        if (!tmp_data) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    return 1;
+ err:
+    if (free_policy) {
+        ASN1_OCTET_STRING_free(*policy);
+        *policy = NULL;
+    }
+    return 0;
+}
+
+static PROXY_CERT_INFO_EXTENSION *r2i_pci(X509V3_EXT_METHOD *method,
+                                          X509V3_CTX *ctx, char *value)
+{
+    PROXY_CERT_INFO_EXTENSION *pci = NULL;
+    STACK_OF(CONF_VALUE) *vals;
+    ASN1_OBJECT *language = NULL;
+    ASN1_INTEGER *pathlen = NULL;
+    ASN1_OCTET_STRING *policy = NULL;
+    size_t i, j;
+    int nid;
+
+    vals = X509V3_parse_list(value);
+    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
+        CONF_VALUE *cnf = sk_CONF_VALUE_value(vals, i);
+        if (!cnf->name || (*cnf->name != '@' && !cnf->value)) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_PROXY_POLICY_SETTING);
+            X509V3_conf_err(cnf);
+            goto err;
+        }
+        if (*cnf->name == '@') {
+            STACK_OF(CONF_VALUE) *sect;
+            int success_p = 1;
+
+            sect = X509V3_get_section(ctx, cnf->name + 1);
+            if (!sect) {
+                OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_SECTION);
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+            for (j = 0; success_p && j < sk_CONF_VALUE_num(sect); j++) {
+                success_p =
+                    process_pci_value(sk_CONF_VALUE_value(sect, j),
+                                      &language, &pathlen, &policy);
+            }
+            X509V3_section_free(ctx, sect);
+            if (!success_p)
+                goto err;
+        } else {
+            if (!process_pci_value(cnf, &language, &pathlen, &policy)) {
+                X509V3_conf_err(cnf);
+                goto err;
+            }
+        }
+    }
+
+    /* Language is mandatory */
+    if (!language) {
+        OPENSSL_PUT_ERROR(X509V3,
+                          X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED);
+        goto err;
+    }
+    nid = OBJ_obj2nid(language);
+    if ((nid == NID_Independent || nid == NID_id_ppl_inheritAll) && policy) {
+        OPENSSL_PUT_ERROR(X509V3,
+                          X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY);
+        goto err;
+    }
+
+    pci = PROXY_CERT_INFO_EXTENSION_new();
+    if (!pci) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    pci->proxyPolicy->policyLanguage = language;
+    language = NULL;
+    pci->proxyPolicy->policy = policy;
+    policy = NULL;
+    pci->pcPathLengthConstraint = pathlen;
+    pathlen = NULL;
+    goto end;
+ err:
+    if (language) {
+        ASN1_OBJECT_free(language);
+        language = NULL;
+    }
+    if (pathlen) {
+        ASN1_INTEGER_free(pathlen);
+        pathlen = NULL;
+    }
+    if (policy) {
+        ASN1_OCTET_STRING_free(policy);
+        policy = NULL;
+    }
+    if (pci) {
+        PROXY_CERT_INFO_EXTENSION_free(pci);
+        pci = NULL;
+    }
+ end:
+    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
+    return pci;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c
new file mode 100644
index 0000000..f803cc8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c	
@@ -0,0 +1,57 @@
+/* v3_pcia.c -*- mode:C; c-file-style: "eay" -*- */
+/*
+ * Contributed to the OpenSSL Project 2004 by Richard Levitte
+ * (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/x509v3.h>
+
+
+ASN1_SEQUENCE(PROXY_POLICY) =
+        {
+        ASN1_SIMPLE(PROXY_POLICY,policyLanguage,ASN1_OBJECT),
+        ASN1_OPT(PROXY_POLICY,policy,ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(PROXY_POLICY)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_POLICY)
+
+ASN1_SEQUENCE(PROXY_CERT_INFO_EXTENSION) =
+        {
+        ASN1_OPT(PROXY_CERT_INFO_EXTENSION,pcPathLengthConstraint,ASN1_INTEGER),
+        ASN1_SIMPLE(PROXY_CERT_INFO_EXTENSION,proxyPolicy,PROXY_POLICY)
+} ASN1_SEQUENCE_END(PROXY_CERT_INFO_EXTENSION)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c.grpc_back
new file mode 100644
index 0000000..3f285f3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcia.c.grpc_back	
@@ -0,0 +1,57 @@
+/* v3_pcia.c -*- mode:C; c-file-style: "eay" -*- */
+/*
+ * Contributed to the OpenSSL Project 2004 by Richard Levitte
+ * (richard@levitte.org)
+ */
+/* Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509v3.h>
+
+
+ASN1_SEQUENCE(PROXY_POLICY) =
+        {
+        ASN1_SIMPLE(PROXY_POLICY,policyLanguage,ASN1_OBJECT),
+        ASN1_OPT(PROXY_POLICY,policy,ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(PROXY_POLICY)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_POLICY)
+
+ASN1_SEQUENCE(PROXY_CERT_INFO_EXTENSION) =
+        {
+        ASN1_OPT(PROXY_CERT_INFO_EXTENSION,pcPathLengthConstraint,ASN1_INTEGER),
+        ASN1_SIMPLE(PROXY_CERT_INFO_EXTENSION,proxyPolicy,PROXY_POLICY)
+} ASN1_SEQUENCE_END(PROXY_CERT_INFO_EXTENSION)
+
+IMPLEMENT_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c
new file mode 100644
index 0000000..5558ca3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c	
@@ -0,0 +1,139 @@
+/* v3_pcons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
+                                                    *method, void *bcons, STACK_OF(CONF_VALUE)
+                                                    *extlist);
+static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_policy_constraints = {
+    NID_policy_constraints, 0,
+    ASN1_ITEM_ref(POLICY_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_POLICY_CONSTRAINTS,
+    v2i_POLICY_CONSTRAINTS,
+    NULL, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
+        ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
+        ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
+} ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
+                                                    *method, void *a, STACK_OF(CONF_VALUE)
+                                                    *extlist)
+{
+    POLICY_CONSTRAINTS *pcons = a;
+    X509V3_add_value_int("Require Explicit Policy",
+                         pcons->requireExplicitPolicy, &extlist);
+    X509V3_add_value_int("Inhibit Policy Mapping",
+                         pcons->inhibitPolicyMapping, &extlist);
+    return extlist;
+}
+
+static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *values)
+{
+    POLICY_CONSTRAINTS *pcons = NULL;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(pcons = POLICY_CONSTRAINTS_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        val = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(val->name, "requireExplicitPolicy")) {
+            if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))
+                goto err;
+        } else if (!strcmp(val->name, "inhibitPolicyMapping")) {
+            if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    if (!pcons->inhibitPolicyMapping && !pcons->requireExplicitPolicy) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_EMPTY_EXTENSION);
+        goto err;
+    }
+
+    return pcons;
+ err:
+    POLICY_CONSTRAINTS_free(pcons);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c.grpc_back
new file mode 100644
index 0000000..1a46314
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pcons.c.grpc_back	
@@ -0,0 +1,139 @@
+/* v3_pcons.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
+                                                    *method, void *bcons, STACK_OF(CONF_VALUE)
+                                                    *extlist);
+static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *values);
+
+const X509V3_EXT_METHOD v3_policy_constraints = {
+    NID_policy_constraints, 0,
+    ASN1_ITEM_ref(POLICY_CONSTRAINTS),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_POLICY_CONSTRAINTS,
+    v2i_POLICY_CONSTRAINTS,
+    NULL, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(POLICY_CONSTRAINTS) = {
+        ASN1_IMP_OPT(POLICY_CONSTRAINTS, requireExplicitPolicy, ASN1_INTEGER,0),
+        ASN1_IMP_OPT(POLICY_CONSTRAINTS, inhibitPolicyMapping, ASN1_INTEGER,1)
+} ASN1_SEQUENCE_END(POLICY_CONSTRAINTS)
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD
+                                                    *method, void *a, STACK_OF(CONF_VALUE)
+                                                    *extlist)
+{
+    POLICY_CONSTRAINTS *pcons = a;
+    X509V3_add_value_int("Require Explicit Policy",
+                         pcons->requireExplicitPolicy, &extlist);
+    X509V3_add_value_int("Inhibit Policy Mapping",
+                         pcons->inhibitPolicyMapping, &extlist);
+    return extlist;
+}
+
+static void *v2i_POLICY_CONSTRAINTS(const X509V3_EXT_METHOD *method,
+                                    X509V3_CTX *ctx,
+                                    STACK_OF(CONF_VALUE) *values)
+{
+    POLICY_CONSTRAINTS *pcons = NULL;
+    CONF_VALUE *val;
+    size_t i;
+    if (!(pcons = POLICY_CONSTRAINTS_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
+        val = sk_CONF_VALUE_value(values, i);
+        if (!strcmp(val->name, "requireExplicitPolicy")) {
+            if (!X509V3_get_value_int(val, &pcons->requireExplicitPolicy))
+                goto err;
+        } else if (!strcmp(val->name, "inhibitPolicyMapping")) {
+            if (!X509V3_get_value_int(val, &pcons->inhibitPolicyMapping))
+                goto err;
+        } else {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
+            X509V3_conf_err(val);
+            goto err;
+        }
+    }
+    if (!pcons->inhibitPolicyMapping && !pcons->requireExplicitPolicy) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_EMPTY_EXTENSION);
+        goto err;
+    }
+
+    return pcons;
+ err:
+    POLICY_CONSTRAINTS_free(pcons);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c
new file mode 100644
index 0000000..d448741
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c	
@@ -0,0 +1,110 @@
+/* v3_pku.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static int i2r_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+                                 PKEY_USAGE_PERIOD *usage, BIO *out,
+                                 int indent);
+/*
+ * static PKEY_USAGE_PERIOD *v2i_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+ * X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
+ */
+const X509V3_EXT_METHOD v3_pkey_usage_period = {
+    NID_private_key_usage_period, 0, ASN1_ITEM_ref(PKEY_USAGE_PERIOD),
+    0, 0, 0, 0,
+    0, 0, 0, 0,
+    (X509V3_EXT_I2R)i2r_PKEY_USAGE_PERIOD, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(PKEY_USAGE_PERIOD) = {
+        ASN1_IMP_OPT(PKEY_USAGE_PERIOD, notBefore, ASN1_GENERALIZEDTIME, 0),
+        ASN1_IMP_OPT(PKEY_USAGE_PERIOD, notAfter, ASN1_GENERALIZEDTIME, 1)
+} ASN1_SEQUENCE_END(PKEY_USAGE_PERIOD)
+
+IMPLEMENT_ASN1_FUNCTIONS(PKEY_USAGE_PERIOD)
+
+static int i2r_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+                                 PKEY_USAGE_PERIOD *usage, BIO *out,
+                                 int indent)
+{
+    BIO_printf(out, "%*s", indent, "");
+    if (usage->notBefore) {
+        BIO_write(out, "Not Before: ", 12);
+        ASN1_GENERALIZEDTIME_print(out, usage->notBefore);
+        if (usage->notAfter)
+            BIO_write(out, ", ", 2);
+    }
+    if (usage->notAfter) {
+        BIO_write(out, "Not After: ", 11);
+        ASN1_GENERALIZEDTIME_print(out, usage->notAfter);
+    }
+    return 1;
+}
+
+/*
+ * static PKEY_USAGE_PERIOD *v2i_PKEY_USAGE_PERIOD(method, ctx, values)
+ * X509V3_EXT_METHOD *method; X509V3_CTX *ctx; STACK_OF(CONF_VALUE) *values;
+ * { return NULL; }
+ */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c.grpc_back
new file mode 100644
index 0000000..e4868b4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pku.c.grpc_back	
@@ -0,0 +1,110 @@
+/* v3_pku.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static int i2r_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+                                 PKEY_USAGE_PERIOD *usage, BIO *out,
+                                 int indent);
+/*
+ * static PKEY_USAGE_PERIOD *v2i_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+ * X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
+ */
+const X509V3_EXT_METHOD v3_pkey_usage_period = {
+    NID_private_key_usage_period, 0, ASN1_ITEM_ref(PKEY_USAGE_PERIOD),
+    0, 0, 0, 0,
+    0, 0, 0, 0,
+    (X509V3_EXT_I2R)i2r_PKEY_USAGE_PERIOD, NULL,
+    NULL
+};
+
+ASN1_SEQUENCE(PKEY_USAGE_PERIOD) = {
+        ASN1_IMP_OPT(PKEY_USAGE_PERIOD, notBefore, ASN1_GENERALIZEDTIME, 0),
+        ASN1_IMP_OPT(PKEY_USAGE_PERIOD, notAfter, ASN1_GENERALIZEDTIME, 1)
+} ASN1_SEQUENCE_END(PKEY_USAGE_PERIOD)
+
+IMPLEMENT_ASN1_FUNCTIONS(PKEY_USAGE_PERIOD)
+
+static int i2r_PKEY_USAGE_PERIOD(X509V3_EXT_METHOD *method,
+                                 PKEY_USAGE_PERIOD *usage, BIO *out,
+                                 int indent)
+{
+    BIO_printf(out, "%*s", indent, "");
+    if (usage->notBefore) {
+        BIO_write(out, "Not Before: ", 12);
+        ASN1_GENERALIZEDTIME_print(out, usage->notBefore);
+        if (usage->notAfter)
+            BIO_write(out, ", ", 2);
+    }
+    if (usage->notAfter) {
+        BIO_write(out, "Not After: ", 11);
+        ASN1_GENERALIZEDTIME_print(out, usage->notAfter);
+    }
+    return 1;
+}
+
+/*
+ * static PKEY_USAGE_PERIOD *v2i_PKEY_USAGE_PERIOD(method, ctx, values)
+ * X509V3_EXT_METHOD *method; X509V3_CTX *ctx; STACK_OF(CONF_VALUE) *values;
+ * { return NULL; }
+ */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c
new file mode 100644
index 0000000..8c43dca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c	
@@ -0,0 +1,154 @@
+/* v3_pmaps.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
+                                                 *method, void *pmps, STACK_OF(CONF_VALUE)
+                                                 *extlist);
+
+const X509V3_EXT_METHOD v3_policy_mappings = {
+    NID_policy_mappings, 0,
+    ASN1_ITEM_ref(POLICY_MAPPINGS),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_POLICY_MAPPINGS,
+    v2i_POLICY_MAPPINGS,
+    0, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(POLICY_MAPPING) = {
+        ASN1_SIMPLE(POLICY_MAPPING, issuerDomainPolicy, ASN1_OBJECT),
+        ASN1_SIMPLE(POLICY_MAPPING, subjectDomainPolicy, ASN1_OBJECT)
+} ASN1_SEQUENCE_END(POLICY_MAPPING)
+
+ASN1_ITEM_TEMPLATE(POLICY_MAPPINGS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, POLICY_MAPPINGS,
+                                                                POLICY_MAPPING)
+ASN1_ITEM_TEMPLATE_END(POLICY_MAPPINGS)
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
+                                                 *method, void *a, STACK_OF(CONF_VALUE)
+                                                 *ext_list)
+{
+    POLICY_MAPPINGS *pmaps = a;
+    POLICY_MAPPING *pmap;
+    size_t i;
+    char obj_tmp1[80];
+    char obj_tmp2[80];
+    for (i = 0; i < sk_POLICY_MAPPING_num(pmaps); i++) {
+        pmap = sk_POLICY_MAPPING_value(pmaps, i);
+        i2t_ASN1_OBJECT(obj_tmp1, 80, pmap->issuerDomainPolicy);
+        i2t_ASN1_OBJECT(obj_tmp2, 80, pmap->subjectDomainPolicy);
+        X509V3_add_value(obj_tmp1, obj_tmp2, &ext_list);
+    }
+    return ext_list;
+}
+
+static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    POLICY_MAPPINGS *pmaps;
+    POLICY_MAPPING *pmap;
+    ASN1_OBJECT *obj1, *obj2;
+    CONF_VALUE *val;
+    size_t i;
+
+    if (!(pmaps = sk_POLICY_MAPPING_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!val->value || !val->name) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        obj1 = OBJ_txt2obj(val->name, 0);
+        obj2 = OBJ_txt2obj(val->value, 0);
+        if (!obj1 || !obj2) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        pmap = POLICY_MAPPING_new();
+        if (!pmap) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+        pmap->issuerDomainPolicy = obj1;
+        pmap->subjectDomainPolicy = obj2;
+        sk_POLICY_MAPPING_push(pmaps, pmap);
+    }
+    return pmaps;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c.grpc_back
new file mode 100644
index 0000000..caacdb2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_pmaps.c.grpc_back	
@@ -0,0 +1,154 @@
+/* v3_pmaps.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
+                                                 *method, void *pmps, STACK_OF(CONF_VALUE)
+                                                 *extlist);
+
+const X509V3_EXT_METHOD v3_policy_mappings = {
+    NID_policy_mappings, 0,
+    ASN1_ITEM_ref(POLICY_MAPPINGS),
+    0, 0, 0, 0,
+    0, 0,
+    i2v_POLICY_MAPPINGS,
+    v2i_POLICY_MAPPINGS,
+    0, 0,
+    NULL
+};
+
+ASN1_SEQUENCE(POLICY_MAPPING) = {
+        ASN1_SIMPLE(POLICY_MAPPING, issuerDomainPolicy, ASN1_OBJECT),
+        ASN1_SIMPLE(POLICY_MAPPING, subjectDomainPolicy, ASN1_OBJECT)
+} ASN1_SEQUENCE_END(POLICY_MAPPING)
+
+ASN1_ITEM_TEMPLATE(POLICY_MAPPINGS) =
+        ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, POLICY_MAPPINGS,
+                                                                POLICY_MAPPING)
+ASN1_ITEM_TEMPLATE_END(POLICY_MAPPINGS)
+
+IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
+
+static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
+                                                 *method, void *a, STACK_OF(CONF_VALUE)
+                                                 *ext_list)
+{
+    POLICY_MAPPINGS *pmaps = a;
+    POLICY_MAPPING *pmap;
+    size_t i;
+    char obj_tmp1[80];
+    char obj_tmp2[80];
+    for (i = 0; i < sk_POLICY_MAPPING_num(pmaps); i++) {
+        pmap = sk_POLICY_MAPPING_value(pmaps, i);
+        i2t_ASN1_OBJECT(obj_tmp1, 80, pmap->issuerDomainPolicy);
+        i2t_ASN1_OBJECT(obj_tmp2, 80, pmap->subjectDomainPolicy);
+        X509V3_add_value(obj_tmp1, obj_tmp2, &ext_list);
+    }
+    return ext_list;
+}
+
+static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
+                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+{
+    POLICY_MAPPINGS *pmaps;
+    POLICY_MAPPING *pmap;
+    ASN1_OBJECT *obj1, *obj2;
+    CONF_VALUE *val;
+    size_t i;
+
+    if (!(pmaps = sk_POLICY_MAPPING_new_null())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        val = sk_CONF_VALUE_value(nval, i);
+        if (!val->value || !val->name) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        obj1 = OBJ_txt2obj(val->name, 0);
+        obj2 = OBJ_txt2obj(val->value, 0);
+        if (!obj1 || !obj2) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER);
+            X509V3_conf_err(val);
+            return NULL;
+        }
+        pmap = POLICY_MAPPING_new();
+        if (!pmap) {
+            sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return NULL;
+        }
+        pmap->issuerDomainPolicy = obj1;
+        pmap->subjectDomainPolicy = obj2;
+        sk_POLICY_MAPPING_push(pmaps, pmap);
+    }
+    return pmaps;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c
new file mode 100644
index 0000000..dbe3adc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c	
@@ -0,0 +1,229 @@
+/* v3_prn.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* X509 v3 extension utilities */
+
+#include <stdio.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/x509v3.h>
+
+/* Extension printing routines */
+
+static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
+                             unsigned long flag, int indent, int supported);
+
+/* Print out a name+value stack */
+
+void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
+                        int ml)
+{
+    size_t i;
+    CONF_VALUE *nval;
+    if (!val)
+        return;
+    if (!ml || !sk_CONF_VALUE_num(val)) {
+        BIO_printf(out, "%*s", indent, "");
+        if (!sk_CONF_VALUE_num(val))
+            BIO_puts(out, "<EMPTY>\n");
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
+        if (ml)
+            BIO_printf(out, "%*s", indent, "");
+        else if (i > 0)
+            BIO_printf(out, ", ");
+        nval = sk_CONF_VALUE_value(val, i);
+        if (!nval->name)
+            BIO_puts(out, nval->value);
+        else if (!nval->value)
+            BIO_puts(out, nval->name);
+        else
+            BIO_printf(out, "%s:%s", nval->name, nval->value);
+        if (ml)
+            BIO_puts(out, "\n");
+    }
+}
+
+/* Main routine: print out a general extension */
+
+int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
+                     int indent)
+{
+    void *ext_str = NULL;
+    char *value = NULL;
+    const unsigned char *p;
+    const X509V3_EXT_METHOD *method;
+    STACK_OF(CONF_VALUE) *nval = NULL;
+    int ok = 1;
+
+    if (!(method = X509V3_EXT_get(ext)))
+        return unknown_ext_print(out, ext, flag, indent, 0);
+    p = ext->value->data;
+    if (method->it)
+        ext_str =
+            ASN1_item_d2i(NULL, &p, ext->value->length,
+                          ASN1_ITEM_ptr(method->it));
+    else
+        ext_str = method->d2i(NULL, &p, ext->value->length);
+
+    if (!ext_str)
+        return unknown_ext_print(out, ext, flag, indent, 1);
+
+    if (method->i2s) {
+        if (!(value = method->i2s(method, ext_str))) {
+            ok = 0;
+            goto err;
+        }
+        BIO_printf(out, "%*s%s", indent, "", value);
+    } else if (method->i2v) {
+        if (!(nval = method->i2v(method, ext_str, NULL))) {
+            ok = 0;
+            goto err;
+        }
+        X509V3_EXT_val_prn(out, nval, indent,
+                           method->ext_flags & X509V3_EXT_MULTILINE);
+    } else if (method->i2r) {
+        if (!method->i2r(method, ext_str, out, indent))
+            ok = 0;
+    } else
+        ok = 0;
+
+ err:
+    sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+    if (value)
+        OPENSSL_free(value);
+    if (method->it)
+        ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
+    else
+        method->ext_free(ext_str);
+    return ok;
+}
+
+int X509V3_extensions_print(BIO *bp, const char *title,
+                            STACK_OF(X509_EXTENSION) *exts,
+                            unsigned long flag, int indent)
+{
+    size_t i;
+    int j;
+
+    if (sk_X509_EXTENSION_num(exts) <= 0)
+        return 1;
+
+    if (title) {
+        BIO_printf(bp, "%*s%s:\n", indent, "", title);
+        indent += 4;
+    }
+
+    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
+        ASN1_OBJECT *obj;
+        X509_EXTENSION *ex;
+        ex = sk_X509_EXTENSION_value(exts, i);
+        if (indent && BIO_printf(bp, "%*s", indent, "") <= 0)
+            return 0;
+        obj = X509_EXTENSION_get_object(ex);
+        i2a_ASN1_OBJECT(bp, obj);
+        j = X509_EXTENSION_get_critical(ex);
+        if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0)
+            return 0;
+        if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
+            BIO_printf(bp, "%*s", indent + 4, "");
+            M_ASN1_OCTET_STRING_print(bp, ex->value);
+        }
+        if (BIO_write(bp, "\n", 1) <= 0)
+            return 0;
+    }
+    return 1;
+}
+
+static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
+                             unsigned long flag, int indent, int supported)
+{
+    switch (flag & X509V3_EXT_UNKNOWN_MASK) {
+
+    case X509V3_EXT_DEFAULT:
+        return 0;
+
+    case X509V3_EXT_ERROR_UNKNOWN:
+        if (supported)
+            BIO_printf(out, "%*s<Parse Error>", indent, "");
+        else
+            BIO_printf(out, "%*s<Not Supported>", indent, "");
+        return 1;
+
+    case X509V3_EXT_PARSE_UNKNOWN:
+    case X509V3_EXT_DUMP_UNKNOWN:
+        return BIO_hexdump(out, ext->value->data, ext->value->length, indent);
+
+    default:
+        return 1;
+    }
+}
+
+#ifndef OPENSSL_NO_FP_API
+int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
+{
+    BIO *bio_tmp;
+    int ret;
+    if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)))
+        return 0;
+    ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
+    BIO_free(bio_tmp);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c.grpc_back
new file mode 100644
index 0000000..2f5efcf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_prn.c.grpc_back	
@@ -0,0 +1,229 @@
+/* v3_prn.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+/* X509 v3 extension utilities */
+
+#include <stdio.h>
+
+#include <openssl/bio.h>
+#include <openssl/conf.h>
+#include <openssl/mem.h>
+#include <openssl/x509v3.h>
+
+/* Extension printing routines */
+
+static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
+                             unsigned long flag, int indent, int supported);
+
+/* Print out a name+value stack */
+
+void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
+                        int ml)
+{
+    size_t i;
+    CONF_VALUE *nval;
+    if (!val)
+        return;
+    if (!ml || !sk_CONF_VALUE_num(val)) {
+        BIO_printf(out, "%*s", indent, "");
+        if (!sk_CONF_VALUE_num(val))
+            BIO_puts(out, "<EMPTY>\n");
+    }
+    for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
+        if (ml)
+            BIO_printf(out, "%*s", indent, "");
+        else if (i > 0)
+            BIO_printf(out, ", ");
+        nval = sk_CONF_VALUE_value(val, i);
+        if (!nval->name)
+            BIO_puts(out, nval->value);
+        else if (!nval->value)
+            BIO_puts(out, nval->name);
+        else
+            BIO_printf(out, "%s:%s", nval->name, nval->value);
+        if (ml)
+            BIO_puts(out, "\n");
+    }
+}
+
+/* Main routine: print out a general extension */
+
+int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
+                     int indent)
+{
+    void *ext_str = NULL;
+    char *value = NULL;
+    const unsigned char *p;
+    const X509V3_EXT_METHOD *method;
+    STACK_OF(CONF_VALUE) *nval = NULL;
+    int ok = 1;
+
+    if (!(method = X509V3_EXT_get(ext)))
+        return unknown_ext_print(out, ext, flag, indent, 0);
+    p = ext->value->data;
+    if (method->it)
+        ext_str =
+            ASN1_item_d2i(NULL, &p, ext->value->length,
+                          ASN1_ITEM_ptr(method->it));
+    else
+        ext_str = method->d2i(NULL, &p, ext->value->length);
+
+    if (!ext_str)
+        return unknown_ext_print(out, ext, flag, indent, 1);
+
+    if (method->i2s) {
+        if (!(value = method->i2s(method, ext_str))) {
+            ok = 0;
+            goto err;
+        }
+        BIO_printf(out, "%*s%s", indent, "", value);
+    } else if (method->i2v) {
+        if (!(nval = method->i2v(method, ext_str, NULL))) {
+            ok = 0;
+            goto err;
+        }
+        X509V3_EXT_val_prn(out, nval, indent,
+                           method->ext_flags & X509V3_EXT_MULTILINE);
+    } else if (method->i2r) {
+        if (!method->i2r(method, ext_str, out, indent))
+            ok = 0;
+    } else
+        ok = 0;
+
+ err:
+    sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
+    if (value)
+        OPENSSL_free(value);
+    if (method->it)
+        ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
+    else
+        method->ext_free(ext_str);
+    return ok;
+}
+
+int X509V3_extensions_print(BIO *bp, const char *title,
+                            STACK_OF(X509_EXTENSION) *exts,
+                            unsigned long flag, int indent)
+{
+    size_t i;
+    int j;
+
+    if (sk_X509_EXTENSION_num(exts) <= 0)
+        return 1;
+
+    if (title) {
+        BIO_printf(bp, "%*s%s:\n", indent, "", title);
+        indent += 4;
+    }
+
+    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
+        ASN1_OBJECT *obj;
+        X509_EXTENSION *ex;
+        ex = sk_X509_EXTENSION_value(exts, i);
+        if (indent && BIO_printf(bp, "%*s", indent, "") <= 0)
+            return 0;
+        obj = X509_EXTENSION_get_object(ex);
+        i2a_ASN1_OBJECT(bp, obj);
+        j = X509_EXTENSION_get_critical(ex);
+        if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0)
+            return 0;
+        if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
+            BIO_printf(bp, "%*s", indent + 4, "");
+            M_ASN1_OCTET_STRING_print(bp, ex->value);
+        }
+        if (BIO_write(bp, "\n", 1) <= 0)
+            return 0;
+    }
+    return 1;
+}
+
+static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
+                             unsigned long flag, int indent, int supported)
+{
+    switch (flag & X509V3_EXT_UNKNOWN_MASK) {
+
+    case X509V3_EXT_DEFAULT:
+        return 0;
+
+    case X509V3_EXT_ERROR_UNKNOWN:
+        if (supported)
+            BIO_printf(out, "%*s<Parse Error>", indent, "");
+        else
+            BIO_printf(out, "%*s<Not Supported>", indent, "");
+        return 1;
+
+    case X509V3_EXT_PARSE_UNKNOWN:
+    case X509V3_EXT_DUMP_UNKNOWN:
+        return BIO_hexdump(out, ext->value->data, ext->value->length, indent);
+
+    default:
+        return 1;
+    }
+}
+
+#ifndef OPENSSL_NO_FP_API
+int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
+{
+    BIO *bio_tmp;
+    int ret;
+    if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)))
+        return 0;
+    ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
+    BIO_free(bio_tmp);
+    return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c
new file mode 100644
index 0000000..deaf586
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c	
@@ -0,0 +1,843 @@
+/* v3_purp.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/x509_vfy.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../internal.h"
+
+#define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
+#define ku_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
+#define xku_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage)))
+#define ns_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
+
+static void x509v3_cache_extensions(X509 *x);
+
+static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca);
+static int purpose_smime(const X509 *x, int ca);
+static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca);
+static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
+                                  int ca);
+static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
+                                        int ca);
+static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca);
+static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca);
+
+static int xp_cmp(const X509_PURPOSE **a, const X509_PURPOSE **b);
+static void xptable_free(X509_PURPOSE *p);
+
+static X509_PURPOSE xstandard[] = {
+    {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0,
+     check_purpose_ssl_client, (char *)"SSL client", (char *)"sslclient",
+     NULL},
+    {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
+     check_purpose_ssl_server, (char *)"SSL server", (char *)"sslserver",
+     NULL},
+    {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
+     check_purpose_ns_ssl_server, (char *)"Netscape SSL server",
+     (char *)"nssslserver", NULL},
+    {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign,
+     (char *)"S/MIME signing", (char *)"smimesign", NULL},
+    {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0,
+     check_purpose_smime_encrypt, (char *)"S/MIME encryption",
+     (char *)"smimeencrypt", NULL},
+    {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign,
+     (char *)"CRL signing", (char *)"crlsign", NULL},
+    {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, (char *)"Any Purpose",
+     (char *)"any", NULL},
+    {X509_PURPOSE_OCSP_HELPER, X509_TRUST_COMPAT, 0, ocsp_helper,
+     (char *)"OCSP helper", (char *)"ocsphelper", NULL},
+    {X509_PURPOSE_TIMESTAMP_SIGN, X509_TRUST_TSA, 0,
+     check_purpose_timestamp_sign, (char *)"Time Stamp signing",
+     (char *)"timestampsign", NULL},
+};
+
+#define X509_PURPOSE_COUNT (sizeof(xstandard)/sizeof(X509_PURPOSE))
+
+static STACK_OF(X509_PURPOSE) *xptable = NULL;
+
+static int xp_cmp(const X509_PURPOSE **a, const X509_PURPOSE **b)
+{
+    return (*a)->purpose - (*b)->purpose;
+}
+
+/*
+ * As much as I'd like to make X509_check_purpose use a "const" X509* I
+ * really can't because it does recalculate hashes and do other non-const
+ * things.
+ */
+int X509_check_purpose(X509 *x, int id, int ca)
+{
+    int idx;
+    const X509_PURPOSE *pt;
+    x509v3_cache_extensions(x);
+    if (id == -1)
+        return 1;
+    idx = X509_PURPOSE_get_by_id(id);
+    if (idx == -1)
+        return -1;
+    pt = X509_PURPOSE_get0(idx);
+    return pt->check_purpose(pt, x, ca);
+}
+
+int X509_PURPOSE_set(int *p, int purpose)
+{
+    if (X509_PURPOSE_get_by_id(purpose) == -1) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_PURPOSE);
+        return 0;
+    }
+    *p = purpose;
+    return 1;
+}
+
+int X509_PURPOSE_get_count(void)
+{
+    if (!xptable)
+        return X509_PURPOSE_COUNT;
+    return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT;
+}
+
+X509_PURPOSE *X509_PURPOSE_get0(int idx)
+{
+    if (idx < 0)
+        return NULL;
+    if (idx < (int)X509_PURPOSE_COUNT)
+        return xstandard + idx;
+    return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT);
+}
+
+int X509_PURPOSE_get_by_sname(char *sname)
+{
+    int i;
+    X509_PURPOSE *xptmp;
+    for (i = 0; i < X509_PURPOSE_get_count(); i++) {
+        xptmp = X509_PURPOSE_get0(i);
+        if (!strcmp(xptmp->sname, sname))
+            return i;
+    }
+    return -1;
+}
+
+int X509_PURPOSE_get_by_id(int purpose)
+{
+    X509_PURPOSE tmp;
+    size_t idx;
+
+    if ((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX))
+        return purpose - X509_PURPOSE_MIN;
+    tmp.purpose = purpose;
+    if (!xptable)
+        return -1;
+
+    sk_X509_PURPOSE_sort(xptable);
+    if (!sk_X509_PURPOSE_find(xptable, &idx, &tmp))
+        return -1;
+    return idx + X509_PURPOSE_COUNT;
+}
+
+int X509_PURPOSE_add(int id, int trust, int flags,
+                     int (*ck) (const X509_PURPOSE *, const X509 *, int),
+                     char *name, char *sname, void *arg)
+{
+    int idx;
+    X509_PURPOSE *ptmp;
+    char *name_dup, *sname_dup;
+
+    /*
+     * This is set according to what we change: application can't set it
+     */
+    flags &= ~X509_PURPOSE_DYNAMIC;
+    /* This will always be set for application modified trust entries */
+    flags |= X509_PURPOSE_DYNAMIC_NAME;
+    /* Get existing entry if any */
+    idx = X509_PURPOSE_get_by_id(id);
+    /* Need a new entry */
+    if (idx == -1) {
+        if (!(ptmp = OPENSSL_malloc(sizeof(X509_PURPOSE)))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        ptmp->flags = X509_PURPOSE_DYNAMIC;
+    } else
+        ptmp = X509_PURPOSE_get0(idx);
+
+    /* Duplicate the supplied names. */
+    name_dup = OPENSSL_strdup(name);
+    sname_dup = OPENSSL_strdup(sname);
+    if (name_dup == NULL || sname_dup == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        if (name_dup != NULL)
+            OPENSSL_free(name_dup);
+        if (sname_dup != NULL)
+            OPENSSL_free(sname_dup);
+        if (idx == -1)
+            OPENSSL_free(ptmp);
+        return 0;
+    }
+
+    /* OPENSSL_free existing name if dynamic */
+    if (ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) {
+        OPENSSL_free(ptmp->name);
+        OPENSSL_free(ptmp->sname);
+    }
+    /* dup supplied name */
+    ptmp->name = name_dup;
+    ptmp->sname = sname_dup;
+    /* Keep the dynamic flag of existing entry */
+    ptmp->flags &= X509_PURPOSE_DYNAMIC;
+    /* Set all other flags */
+    ptmp->flags |= flags;
+
+    ptmp->purpose = id;
+    ptmp->trust = trust;
+    ptmp->check_purpose = ck;
+    ptmp->usr_data = arg;
+
+    /* If its a new entry manage the dynamic table */
+    if (idx == -1) {
+        if (!xptable && !(xptable = sk_X509_PURPOSE_new(xp_cmp))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            xptable_free(ptmp);
+            return 0;
+        }
+        if (!sk_X509_PURPOSE_push(xptable, ptmp)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            xptable_free(ptmp);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static void xptable_free(X509_PURPOSE *p)
+{
+    if (!p)
+        return;
+    if (p->flags & X509_PURPOSE_DYNAMIC) {
+        if (p->flags & X509_PURPOSE_DYNAMIC_NAME) {
+            OPENSSL_free(p->name);
+            OPENSSL_free(p->sname);
+        }
+        OPENSSL_free(p);
+    }
+}
+
+void X509_PURPOSE_cleanup(void)
+{
+    unsigned int i;
+    sk_X509_PURPOSE_pop_free(xptable, xptable_free);
+    for (i = 0; i < X509_PURPOSE_COUNT; i++)
+        xptable_free(xstandard + i);
+    xptable = NULL;
+}
+
+int X509_PURPOSE_get_id(X509_PURPOSE *xp)
+{
+    return xp->purpose;
+}
+
+char *X509_PURPOSE_get0_name(X509_PURPOSE *xp)
+{
+    return xp->name;
+}
+
+char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp)
+{
+    return xp->sname;
+}
+
+int X509_PURPOSE_get_trust(X509_PURPOSE *xp)
+{
+    return xp->trust;
+}
+
+static int nid_cmp(const void *void_a, const void *void_b)
+{
+    const int *a = void_a, *b = void_b;
+
+    return *a - *b;
+}
+
+int X509_supported_extension(X509_EXTENSION *ex)
+{
+    /*
+     * This table is a list of the NIDs of supported extensions: that is
+     * those which are used by the verify process. If an extension is
+     * critical and doesn't appear in this list then the verify process will
+     * normally reject the certificate. The list must be kept in numerical
+     * order because it will be searched using bsearch.
+     */
+
+    static const int supported_nids[] = {
+        NID_netscape_cert_type, /* 71 */
+        NID_key_usage,          /* 83 */
+        NID_subject_alt_name,   /* 85 */
+        NID_basic_constraints,  /* 87 */
+        NID_certificate_policies, /* 89 */
+        NID_ext_key_usage,      /* 126 */
+        NID_policy_constraints, /* 401 */
+        NID_proxyCertInfo,      /* 663 */
+        NID_name_constraints,   /* 666 */
+        NID_policy_mappings,    /* 747 */
+        NID_inhibit_any_policy  /* 748 */
+    };
+
+    int ex_nid = OBJ_obj2nid(X509_EXTENSION_get_object(ex));
+
+    if (ex_nid == NID_undef)
+        return 0;
+
+    if (bsearch
+        (&ex_nid, supported_nids, sizeof(supported_nids) / sizeof(int),
+         sizeof(int), nid_cmp) != NULL)
+        return 1;
+    return 0;
+}
+
+static void setup_dp(X509 *x, DIST_POINT *dp)
+{
+    X509_NAME *iname = NULL;
+    size_t i;
+    if (dp->reasons) {
+        if (dp->reasons->length > 0)
+            dp->dp_reasons = dp->reasons->data[0];
+        if (dp->reasons->length > 1)
+            dp->dp_reasons |= (dp->reasons->data[1] << 8);
+        dp->dp_reasons &= CRLDP_ALL_REASONS;
+    } else
+        dp->dp_reasons = CRLDP_ALL_REASONS;
+    if (!dp->distpoint || (dp->distpoint->type != 1))
+        return;
+    for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
+        if (gen->type == GEN_DIRNAME) {
+            iname = gen->d.directoryName;
+            break;
+        }
+    }
+    if (!iname)
+        iname = X509_get_issuer_name(x);
+
+    DIST_POINT_set_dpname(dp->distpoint, iname);
+
+}
+
+static void setup_crldp(X509 *x)
+{
+    size_t i;
+    x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
+    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++)
+        setup_dp(x, sk_DIST_POINT_value(x->crldp, i));
+}
+
+static void x509v3_cache_extensions(X509 *x)
+{
+    BASIC_CONSTRAINTS *bs;
+    PROXY_CERT_INFO_EXTENSION *pci;
+    ASN1_BIT_STRING *usage;
+    ASN1_BIT_STRING *ns;
+    EXTENDED_KEY_USAGE *extusage;
+    X509_EXTENSION *ex;
+    size_t i;
+    int j;
+
+    CRYPTO_MUTEX_lock_read(&x->lock);
+    const int is_set = x->ex_flags & EXFLAG_SET;
+    CRYPTO_MUTEX_unlock_read(&x->lock);
+
+    if (is_set) {
+        return;
+    }
+
+    CRYPTO_MUTEX_lock_write(&x->lock);
+    if (x->ex_flags & EXFLAG_SET) {
+        CRYPTO_MUTEX_unlock_write(&x->lock);
+        return;
+    }
+
+    X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
+    /* V1 should mean no extensions ... */
+    if (!X509_get_version(x))
+        x->ex_flags |= EXFLAG_V1;
+    /* Handle basic constraints */
+    if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
+        if (bs->ca)
+            x->ex_flags |= EXFLAG_CA;
+        if (bs->pathlen) {
+            if ((bs->pathlen->type == V_ASN1_NEG_INTEGER)
+                || !bs->ca) {
+                x->ex_flags |= EXFLAG_INVALID;
+                x->ex_pathlen = 0;
+            } else
+                x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen);
+        } else
+            x->ex_pathlen = -1;
+        BASIC_CONSTRAINTS_free(bs);
+        x->ex_flags |= EXFLAG_BCONS;
+    }
+    /* Handle proxy certificates */
+    if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
+        if (x->ex_flags & EXFLAG_CA
+            || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0
+            || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) {
+            x->ex_flags |= EXFLAG_INVALID;
+        }
+        if (pci->pcPathLengthConstraint) {
+            x->ex_pcpathlen = ASN1_INTEGER_get(pci->pcPathLengthConstraint);
+        } else
+            x->ex_pcpathlen = -1;
+        PROXY_CERT_INFO_EXTENSION_free(pci);
+        x->ex_flags |= EXFLAG_PROXY;
+    }
+    /* Handle key usage */
+    if ((usage = X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
+        if (usage->length > 0) {
+            x->ex_kusage = usage->data[0];
+            if (usage->length > 1)
+                x->ex_kusage |= usage->data[1] << 8;
+        } else
+            x->ex_kusage = 0;
+        x->ex_flags |= EXFLAG_KUSAGE;
+        ASN1_BIT_STRING_free(usage);
+    }
+    x->ex_xkusage = 0;
+    if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
+        x->ex_flags |= EXFLAG_XKUSAGE;
+        for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
+            switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) {
+            case NID_server_auth:
+                x->ex_xkusage |= XKU_SSL_SERVER;
+                break;
+
+            case NID_client_auth:
+                x->ex_xkusage |= XKU_SSL_CLIENT;
+                break;
+
+            case NID_email_protect:
+                x->ex_xkusage |= XKU_SMIME;
+                break;
+
+            case NID_code_sign:
+                x->ex_xkusage |= XKU_CODE_SIGN;
+                break;
+
+            case NID_ms_sgc:
+            case NID_ns_sgc:
+                x->ex_xkusage |= XKU_SGC;
+                break;
+
+            case NID_OCSP_sign:
+                x->ex_xkusage |= XKU_OCSP_SIGN;
+                break;
+
+            case NID_time_stamp:
+                x->ex_xkusage |= XKU_TIMESTAMP;
+                break;
+
+            case NID_dvcs:
+                x->ex_xkusage |= XKU_DVCS;
+                break;
+
+            case NID_anyExtendedKeyUsage:
+                x->ex_xkusage |= XKU_ANYEKU;
+                break;
+            }
+        }
+        sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
+    }
+
+    if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
+        if (ns->length > 0)
+            x->ex_nscert = ns->data[0];
+        else
+            x->ex_nscert = 0;
+        x->ex_flags |= EXFLAG_NSCERT;
+        ASN1_BIT_STRING_free(ns);
+    }
+    x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, NULL, NULL);
+    x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, NULL, NULL);
+    /* Does subject name match issuer ? */
+    if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) {
+        x->ex_flags |= EXFLAG_SI;
+        /* If SKID matches AKID also indicate self signed */
+        if (X509_check_akid(x, x->akid) == X509_V_OK &&
+            !ku_reject(x, KU_KEY_CERT_SIGN))
+            x->ex_flags |= EXFLAG_SS;
+    }
+    x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    x->nc = X509_get_ext_d2i(x, NID_name_constraints, &j, NULL);
+    if (!x->nc && (j != -1))
+        x->ex_flags |= EXFLAG_INVALID;
+    setup_crldp(x);
+
+    for (j = 0; j < X509_get_ext_count(x); j++) {
+        ex = X509_get_ext(x, j);
+        if (OBJ_obj2nid(X509_EXTENSION_get_object(ex))
+            == NID_freshest_crl)
+            x->ex_flags |= EXFLAG_FRESHEST;
+        if (!X509_EXTENSION_get_critical(ex))
+            continue;
+        if (!X509_supported_extension(ex)) {
+            x->ex_flags |= EXFLAG_CRITICAL;
+            break;
+        }
+    }
+    x->ex_flags |= EXFLAG_SET;
+
+    CRYPTO_MUTEX_unlock_write(&x->lock);
+}
+
+/* check_ca returns one if |x| should be considered a CA certificate and zero
+ * otherwise. */
+static int check_ca(const X509 *x)
+{
+    /* keyUsage if present should allow cert signing */
+    if (ku_reject(x, KU_KEY_CERT_SIGN))
+        return 0;
+    /* Version 1 certificates are considered CAs and don't have extensions. */
+    if ((x->ex_flags & V1_ROOT) == V1_ROOT) {
+        return 1;
+    }
+    /* Otherwise, it's only a CA if basicConstraints says so. */
+    return ((x->ex_flags & EXFLAG_BCONS) &&
+            (x->ex_flags & EXFLAG_CA));
+}
+
+int X509_check_ca(X509 *x)
+{
+    x509v3_cache_extensions(x);
+    return check_ca(x);
+}
+
+static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    if (xku_reject(x, XKU_SSL_CLIENT))
+        return 0;
+    if (ca)
+        return check_ca(x);
+    /* We need to do digital signatures or key agreement */
+    if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT))
+        return 0;
+    /* nsCertType if present should allow SSL client use */
+    if (ns_reject(x, NS_SSL_CLIENT))
+        return 0;
+    return 1;
+}
+
+/*
+ * Key usage needed for TLS/SSL server: digital signature, encipherment or
+ * key agreement. The ssl code can check this more thoroughly for individual
+ * key types.
+ */
+#define KU_TLS \
+        (KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT|KU_KEY_AGREEMENT)
+
+static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    if (xku_reject(x, XKU_SSL_SERVER))
+        return 0;
+    if (ca)
+        return check_ca(x);
+
+    if (ns_reject(x, NS_SSL_SERVER))
+        return 0;
+    if (ku_reject(x, KU_TLS))
+        return 0;
+
+    return 1;
+
+}
+
+static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca)
+{
+    int ret;
+    ret = check_purpose_ssl_server(xp, x, ca);
+    if (!ret || ca)
+        return ret;
+    /* We need to encipher or Netscape complains */
+    if (ku_reject(x, KU_KEY_ENCIPHERMENT))
+        return 0;
+    return ret;
+}
+
+/* purpose_smime returns one if |x| is a valid S/MIME leaf (|ca| is zero) or CA
+ * (|ca| is one) certificate, and zero otherwise. */
+static int purpose_smime(const X509 *x, int ca)
+{
+    if (xku_reject(x, XKU_SMIME))
+        return 0;
+    if (ca) {
+        /* check nsCertType if present */
+        if ((x->ex_flags & EXFLAG_NSCERT) &&
+            (x->ex_nscert & NS_SMIME_CA) == 0) {
+          return 0;
+        }
+
+        return check_ca(x);
+    }
+    if (x->ex_flags & EXFLAG_NSCERT) {
+        return (x->ex_nscert & NS_SMIME) == NS_SMIME;
+    }
+    return 1;
+}
+
+static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    int ret;
+    ret = purpose_smime(x, ca);
+    if (!ret || ca)
+        return ret;
+    if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION))
+        return 0;
+    return ret;
+}
+
+static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca)
+{
+    int ret;
+    ret = purpose_smime(x, ca);
+    if (!ret || ca)
+        return ret;
+    if (ku_reject(x, KU_KEY_ENCIPHERMENT))
+        return 0;
+    return ret;
+}
+
+static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
+                                  int ca)
+{
+    if (ca) {
+        return check_ca(x);
+    }
+    if (ku_reject(x, KU_CRL_SIGN))
+        return 0;
+    return 1;
+}
+
+/*
+ * OCSP helper: this is *not* a full OCSP check. It just checks that each CA
+ * is valid. Additional checks must be made on the chain.
+ */
+
+static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca)
+{
+    if (ca)
+        return check_ca(x);
+    /* leaf certificate is checked in OCSP_verify() */
+    return 1;
+}
+
+static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
+                                        int ca)
+{
+    int i_ext;
+
+    /* If ca is true we must return if this is a valid CA certificate. */
+    if (ca)
+        return check_ca(x);
+
+    /*
+     * Check the optional key usage field:
+     * if Key Usage is present, it must be one of digitalSignature
+     * and/or nonRepudiation (other values are not consistent and shall
+     * be rejected).
+     */
+    if ((x->ex_flags & EXFLAG_KUSAGE)
+        && ((x->ex_kusage & ~(KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)) ||
+            !(x->ex_kusage & (KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE))))
+        return 0;
+
+    /* Only time stamp key usage is permitted and it's required. */
+    if (!(x->ex_flags & EXFLAG_XKUSAGE) || x->ex_xkusage != XKU_TIMESTAMP)
+        return 0;
+
+    /* Extended Key Usage MUST be critical */
+    i_ext = X509_get_ext_by_NID((X509 *)x, NID_ext_key_usage, -1);
+    if (i_ext >= 0) {
+        X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext);
+        if (!X509_EXTENSION_get_critical(ext))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca)
+{
+    return 1;
+}
+
+/*
+ * Various checks to see if one certificate issued the second. This can be
+ * used to prune a set of possible issuer certificates which have been looked
+ * up using some simple method such as by subject name. These are: 1. Check
+ * issuer_name(subject) == subject_name(issuer) 2. If akid(subject) exists
+ * check it matches issuer 3. If key_usage(issuer) exists check it supports
+ * certificate signing returns 0 for OK, positive for reason for mismatch,
+ * reasons match codes for X509_verify_cert()
+ */
+
+int X509_check_issued(X509 *issuer, X509 *subject)
+{
+    if (X509_NAME_cmp(X509_get_subject_name(issuer),
+                      X509_get_issuer_name(subject)))
+        return X509_V_ERR_SUBJECT_ISSUER_MISMATCH;
+    x509v3_cache_extensions(issuer);
+    x509v3_cache_extensions(subject);
+
+    if (subject->akid) {
+        int ret = X509_check_akid(issuer, subject->akid);
+        if (ret != X509_V_OK)
+            return ret;
+    }
+
+    if (subject->ex_flags & EXFLAG_PROXY) {
+        if (ku_reject(issuer, KU_DIGITAL_SIGNATURE))
+            return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE;
+    } else if (ku_reject(issuer, KU_KEY_CERT_SIGN))
+        return X509_V_ERR_KEYUSAGE_NO_CERTSIGN;
+    return X509_V_OK;
+}
+
+int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
+{
+
+    if (!akid)
+        return X509_V_OK;
+
+    /* Check key ids (if present) */
+    if (akid->keyid && issuer->skid &&
+        ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
+        return X509_V_ERR_AKID_SKID_MISMATCH;
+    /* Check serial number */
+    if (akid->serial &&
+        ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
+        return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
+    /* Check issuer name */
+    if (akid->issuer) {
+        /*
+         * Ugh, for some peculiar reason AKID includes SEQUENCE OF
+         * GeneralName. So look for a DirName. There may be more than one but
+         * we only take any notice of the first.
+         */
+        GENERAL_NAMES *gens;
+        GENERAL_NAME *gen;
+        X509_NAME *nm = NULL;
+        size_t i;
+        gens = akid->issuer;
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            gen = sk_GENERAL_NAME_value(gens, i);
+            if (gen->type == GEN_DIRNAME) {
+                nm = gen->d.dirn;
+                break;
+            }
+        }
+        if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer)))
+            return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
+    }
+    return X509_V_OK;
+}
+
+uint32_t X509_get_extension_flags(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    return x->ex_flags;
+}
+
+uint32_t X509_get_key_usage(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    if (x->ex_flags & EXFLAG_KUSAGE)
+        return x->ex_kusage;
+    return UINT32_MAX;
+}
+
+uint32_t X509_get_extended_key_usage(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    if (x->ex_flags & EXFLAG_XKUSAGE)
+        return x->ex_xkusage;
+    return UINT32_MAX;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c.grpc_back
new file mode 100644
index 0000000..d9d105e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_purp.c.grpc_back	
@@ -0,0 +1,843 @@
+/* v3_purp.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/digest.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/thread.h>
+#include <openssl/x509_vfy.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+#define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
+#define ku_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
+#define xku_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage)))
+#define ns_reject(x, usage) \
+        (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
+
+static void x509v3_cache_extensions(X509 *x);
+
+static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca);
+static int purpose_smime(const X509 *x, int ca);
+static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca);
+static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca);
+static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
+                                  int ca);
+static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
+                                        int ca);
+static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca);
+static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca);
+
+static int xp_cmp(const X509_PURPOSE **a, const X509_PURPOSE **b);
+static void xptable_free(X509_PURPOSE *p);
+
+static X509_PURPOSE xstandard[] = {
+    {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0,
+     check_purpose_ssl_client, (char *)"SSL client", (char *)"sslclient",
+     NULL},
+    {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
+     check_purpose_ssl_server, (char *)"SSL server", (char *)"sslserver",
+     NULL},
+    {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0,
+     check_purpose_ns_ssl_server, (char *)"Netscape SSL server",
+     (char *)"nssslserver", NULL},
+    {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign,
+     (char *)"S/MIME signing", (char *)"smimesign", NULL},
+    {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0,
+     check_purpose_smime_encrypt, (char *)"S/MIME encryption",
+     (char *)"smimeencrypt", NULL},
+    {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign,
+     (char *)"CRL signing", (char *)"crlsign", NULL},
+    {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, (char *)"Any Purpose",
+     (char *)"any", NULL},
+    {X509_PURPOSE_OCSP_HELPER, X509_TRUST_COMPAT, 0, ocsp_helper,
+     (char *)"OCSP helper", (char *)"ocsphelper", NULL},
+    {X509_PURPOSE_TIMESTAMP_SIGN, X509_TRUST_TSA, 0,
+     check_purpose_timestamp_sign, (char *)"Time Stamp signing",
+     (char *)"timestampsign", NULL},
+};
+
+#define X509_PURPOSE_COUNT (sizeof(xstandard)/sizeof(X509_PURPOSE))
+
+static STACK_OF(X509_PURPOSE) *xptable = NULL;
+
+static int xp_cmp(const X509_PURPOSE **a, const X509_PURPOSE **b)
+{
+    return (*a)->purpose - (*b)->purpose;
+}
+
+/*
+ * As much as I'd like to make X509_check_purpose use a "const" X509* I
+ * really can't because it does recalculate hashes and do other non-const
+ * things.
+ */
+int X509_check_purpose(X509 *x, int id, int ca)
+{
+    int idx;
+    const X509_PURPOSE *pt;
+    x509v3_cache_extensions(x);
+    if (id == -1)
+        return 1;
+    idx = X509_PURPOSE_get_by_id(id);
+    if (idx == -1)
+        return -1;
+    pt = X509_PURPOSE_get0(idx);
+    return pt->check_purpose(pt, x, ca);
+}
+
+int X509_PURPOSE_set(int *p, int purpose)
+{
+    if (X509_PURPOSE_get_by_id(purpose) == -1) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_PURPOSE);
+        return 0;
+    }
+    *p = purpose;
+    return 1;
+}
+
+int X509_PURPOSE_get_count(void)
+{
+    if (!xptable)
+        return X509_PURPOSE_COUNT;
+    return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT;
+}
+
+X509_PURPOSE *X509_PURPOSE_get0(int idx)
+{
+    if (idx < 0)
+        return NULL;
+    if (idx < (int)X509_PURPOSE_COUNT)
+        return xstandard + idx;
+    return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT);
+}
+
+int X509_PURPOSE_get_by_sname(char *sname)
+{
+    int i;
+    X509_PURPOSE *xptmp;
+    for (i = 0; i < X509_PURPOSE_get_count(); i++) {
+        xptmp = X509_PURPOSE_get0(i);
+        if (!strcmp(xptmp->sname, sname))
+            return i;
+    }
+    return -1;
+}
+
+int X509_PURPOSE_get_by_id(int purpose)
+{
+    X509_PURPOSE tmp;
+    size_t idx;
+
+    if ((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX))
+        return purpose - X509_PURPOSE_MIN;
+    tmp.purpose = purpose;
+    if (!xptable)
+        return -1;
+
+    sk_X509_PURPOSE_sort(xptable);
+    if (!sk_X509_PURPOSE_find(xptable, &idx, &tmp))
+        return -1;
+    return idx + X509_PURPOSE_COUNT;
+}
+
+int X509_PURPOSE_add(int id, int trust, int flags,
+                     int (*ck) (const X509_PURPOSE *, const X509 *, int),
+                     char *name, char *sname, void *arg)
+{
+    int idx;
+    X509_PURPOSE *ptmp;
+    char *name_dup, *sname_dup;
+
+    /*
+     * This is set according to what we change: application can't set it
+     */
+    flags &= ~X509_PURPOSE_DYNAMIC;
+    /* This will always be set for application modified trust entries */
+    flags |= X509_PURPOSE_DYNAMIC_NAME;
+    /* Get existing entry if any */
+    idx = X509_PURPOSE_get_by_id(id);
+    /* Need a new entry */
+    if (idx == -1) {
+        if (!(ptmp = OPENSSL_malloc(sizeof(X509_PURPOSE)))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        ptmp->flags = X509_PURPOSE_DYNAMIC;
+    } else
+        ptmp = X509_PURPOSE_get0(idx);
+
+    /* Duplicate the supplied names. */
+    name_dup = OPENSSL_strdup(name);
+    sname_dup = OPENSSL_strdup(sname);
+    if (name_dup == NULL || sname_dup == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        if (name_dup != NULL)
+            OPENSSL_free(name_dup);
+        if (sname_dup != NULL)
+            OPENSSL_free(sname_dup);
+        if (idx == -1)
+            OPENSSL_free(ptmp);
+        return 0;
+    }
+
+    /* OPENSSL_free existing name if dynamic */
+    if (ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) {
+        OPENSSL_free(ptmp->name);
+        OPENSSL_free(ptmp->sname);
+    }
+    /* dup supplied name */
+    ptmp->name = name_dup;
+    ptmp->sname = sname_dup;
+    /* Keep the dynamic flag of existing entry */
+    ptmp->flags &= X509_PURPOSE_DYNAMIC;
+    /* Set all other flags */
+    ptmp->flags |= flags;
+
+    ptmp->purpose = id;
+    ptmp->trust = trust;
+    ptmp->check_purpose = ck;
+    ptmp->usr_data = arg;
+
+    /* If its a new entry manage the dynamic table */
+    if (idx == -1) {
+        if (!xptable && !(xptable = sk_X509_PURPOSE_new(xp_cmp))) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            xptable_free(ptmp);
+            return 0;
+        }
+        if (!sk_X509_PURPOSE_push(xptable, ptmp)) {
+            OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+            xptable_free(ptmp);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static void xptable_free(X509_PURPOSE *p)
+{
+    if (!p)
+        return;
+    if (p->flags & X509_PURPOSE_DYNAMIC) {
+        if (p->flags & X509_PURPOSE_DYNAMIC_NAME) {
+            OPENSSL_free(p->name);
+            OPENSSL_free(p->sname);
+        }
+        OPENSSL_free(p);
+    }
+}
+
+void X509_PURPOSE_cleanup(void)
+{
+    unsigned int i;
+    sk_X509_PURPOSE_pop_free(xptable, xptable_free);
+    for (i = 0; i < X509_PURPOSE_COUNT; i++)
+        xptable_free(xstandard + i);
+    xptable = NULL;
+}
+
+int X509_PURPOSE_get_id(X509_PURPOSE *xp)
+{
+    return xp->purpose;
+}
+
+char *X509_PURPOSE_get0_name(X509_PURPOSE *xp)
+{
+    return xp->name;
+}
+
+char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp)
+{
+    return xp->sname;
+}
+
+int X509_PURPOSE_get_trust(X509_PURPOSE *xp)
+{
+    return xp->trust;
+}
+
+static int nid_cmp(const void *void_a, const void *void_b)
+{
+    const int *a = void_a, *b = void_b;
+
+    return *a - *b;
+}
+
+int X509_supported_extension(X509_EXTENSION *ex)
+{
+    /*
+     * This table is a list of the NIDs of supported extensions: that is
+     * those which are used by the verify process. If an extension is
+     * critical and doesn't appear in this list then the verify process will
+     * normally reject the certificate. The list must be kept in numerical
+     * order because it will be searched using bsearch.
+     */
+
+    static const int supported_nids[] = {
+        NID_netscape_cert_type, /* 71 */
+        NID_key_usage,          /* 83 */
+        NID_subject_alt_name,   /* 85 */
+        NID_basic_constraints,  /* 87 */
+        NID_certificate_policies, /* 89 */
+        NID_ext_key_usage,      /* 126 */
+        NID_policy_constraints, /* 401 */
+        NID_proxyCertInfo,      /* 663 */
+        NID_name_constraints,   /* 666 */
+        NID_policy_mappings,    /* 747 */
+        NID_inhibit_any_policy  /* 748 */
+    };
+
+    int ex_nid = OBJ_obj2nid(X509_EXTENSION_get_object(ex));
+
+    if (ex_nid == NID_undef)
+        return 0;
+
+    if (bsearch
+        (&ex_nid, supported_nids, sizeof(supported_nids) / sizeof(int),
+         sizeof(int), nid_cmp) != NULL)
+        return 1;
+    return 0;
+}
+
+static void setup_dp(X509 *x, DIST_POINT *dp)
+{
+    X509_NAME *iname = NULL;
+    size_t i;
+    if (dp->reasons) {
+        if (dp->reasons->length > 0)
+            dp->dp_reasons = dp->reasons->data[0];
+        if (dp->reasons->length > 1)
+            dp->dp_reasons |= (dp->reasons->data[1] << 8);
+        dp->dp_reasons &= CRLDP_ALL_REASONS;
+    } else
+        dp->dp_reasons = CRLDP_ALL_REASONS;
+    if (!dp->distpoint || (dp->distpoint->type != 1))
+        return;
+    for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) {
+        GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i);
+        if (gen->type == GEN_DIRNAME) {
+            iname = gen->d.directoryName;
+            break;
+        }
+    }
+    if (!iname)
+        iname = X509_get_issuer_name(x);
+
+    DIST_POINT_set_dpname(dp->distpoint, iname);
+
+}
+
+static void setup_crldp(X509 *x)
+{
+    size_t i;
+    x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
+    for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++)
+        setup_dp(x, sk_DIST_POINT_value(x->crldp, i));
+}
+
+static void x509v3_cache_extensions(X509 *x)
+{
+    BASIC_CONSTRAINTS *bs;
+    PROXY_CERT_INFO_EXTENSION *pci;
+    ASN1_BIT_STRING *usage;
+    ASN1_BIT_STRING *ns;
+    EXTENDED_KEY_USAGE *extusage;
+    X509_EXTENSION *ex;
+    size_t i;
+    int j;
+
+    CRYPTO_MUTEX_lock_read(&x->lock);
+    const int is_set = x->ex_flags & EXFLAG_SET;
+    CRYPTO_MUTEX_unlock_read(&x->lock);
+
+    if (is_set) {
+        return;
+    }
+
+    CRYPTO_MUTEX_lock_write(&x->lock);
+    if (x->ex_flags & EXFLAG_SET) {
+        CRYPTO_MUTEX_unlock_write(&x->lock);
+        return;
+    }
+
+    X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
+    /* V1 should mean no extensions ... */
+    if (!X509_get_version(x))
+        x->ex_flags |= EXFLAG_V1;
+    /* Handle basic constraints */
+    if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
+        if (bs->ca)
+            x->ex_flags |= EXFLAG_CA;
+        if (bs->pathlen) {
+            if ((bs->pathlen->type == V_ASN1_NEG_INTEGER)
+                || !bs->ca) {
+                x->ex_flags |= EXFLAG_INVALID;
+                x->ex_pathlen = 0;
+            } else
+                x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen);
+        } else
+            x->ex_pathlen = -1;
+        BASIC_CONSTRAINTS_free(bs);
+        x->ex_flags |= EXFLAG_BCONS;
+    }
+    /* Handle proxy certificates */
+    if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
+        if (x->ex_flags & EXFLAG_CA
+            || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0
+            || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) {
+            x->ex_flags |= EXFLAG_INVALID;
+        }
+        if (pci->pcPathLengthConstraint) {
+            x->ex_pcpathlen = ASN1_INTEGER_get(pci->pcPathLengthConstraint);
+        } else
+            x->ex_pcpathlen = -1;
+        PROXY_CERT_INFO_EXTENSION_free(pci);
+        x->ex_flags |= EXFLAG_PROXY;
+    }
+    /* Handle key usage */
+    if ((usage = X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
+        if (usage->length > 0) {
+            x->ex_kusage = usage->data[0];
+            if (usage->length > 1)
+                x->ex_kusage |= usage->data[1] << 8;
+        } else
+            x->ex_kusage = 0;
+        x->ex_flags |= EXFLAG_KUSAGE;
+        ASN1_BIT_STRING_free(usage);
+    }
+    x->ex_xkusage = 0;
+    if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
+        x->ex_flags |= EXFLAG_XKUSAGE;
+        for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
+            switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) {
+            case NID_server_auth:
+                x->ex_xkusage |= XKU_SSL_SERVER;
+                break;
+
+            case NID_client_auth:
+                x->ex_xkusage |= XKU_SSL_CLIENT;
+                break;
+
+            case NID_email_protect:
+                x->ex_xkusage |= XKU_SMIME;
+                break;
+
+            case NID_code_sign:
+                x->ex_xkusage |= XKU_CODE_SIGN;
+                break;
+
+            case NID_ms_sgc:
+            case NID_ns_sgc:
+                x->ex_xkusage |= XKU_SGC;
+                break;
+
+            case NID_OCSP_sign:
+                x->ex_xkusage |= XKU_OCSP_SIGN;
+                break;
+
+            case NID_time_stamp:
+                x->ex_xkusage |= XKU_TIMESTAMP;
+                break;
+
+            case NID_dvcs:
+                x->ex_xkusage |= XKU_DVCS;
+                break;
+
+            case NID_anyExtendedKeyUsage:
+                x->ex_xkusage |= XKU_ANYEKU;
+                break;
+            }
+        }
+        sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
+    }
+
+    if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
+        if (ns->length > 0)
+            x->ex_nscert = ns->data[0];
+        else
+            x->ex_nscert = 0;
+        x->ex_flags |= EXFLAG_NSCERT;
+        ASN1_BIT_STRING_free(ns);
+    }
+    x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, NULL, NULL);
+    x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, NULL, NULL);
+    /* Does subject name match issuer ? */
+    if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) {
+        x->ex_flags |= EXFLAG_SI;
+        /* If SKID matches AKID also indicate self signed */
+        if (X509_check_akid(x, x->akid) == X509_V_OK &&
+            !ku_reject(x, KU_KEY_CERT_SIGN))
+            x->ex_flags |= EXFLAG_SS;
+    }
+    x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    x->nc = X509_get_ext_d2i(x, NID_name_constraints, &j, NULL);
+    if (!x->nc && (j != -1))
+        x->ex_flags |= EXFLAG_INVALID;
+    setup_crldp(x);
+
+    for (j = 0; j < X509_get_ext_count(x); j++) {
+        ex = X509_get_ext(x, j);
+        if (OBJ_obj2nid(X509_EXTENSION_get_object(ex))
+            == NID_freshest_crl)
+            x->ex_flags |= EXFLAG_FRESHEST;
+        if (!X509_EXTENSION_get_critical(ex))
+            continue;
+        if (!X509_supported_extension(ex)) {
+            x->ex_flags |= EXFLAG_CRITICAL;
+            break;
+        }
+    }
+    x->ex_flags |= EXFLAG_SET;
+
+    CRYPTO_MUTEX_unlock_write(&x->lock);
+}
+
+/* check_ca returns one if |x| should be considered a CA certificate and zero
+ * otherwise. */
+static int check_ca(const X509 *x)
+{
+    /* keyUsage if present should allow cert signing */
+    if (ku_reject(x, KU_KEY_CERT_SIGN))
+        return 0;
+    /* Version 1 certificates are considered CAs and don't have extensions. */
+    if ((x->ex_flags & V1_ROOT) == V1_ROOT) {
+        return 1;
+    }
+    /* Otherwise, it's only a CA if basicConstraints says so. */
+    return ((x->ex_flags & EXFLAG_BCONS) &&
+            (x->ex_flags & EXFLAG_CA));
+}
+
+int X509_check_ca(X509 *x)
+{
+    x509v3_cache_extensions(x);
+    return check_ca(x);
+}
+
+static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    if (xku_reject(x, XKU_SSL_CLIENT))
+        return 0;
+    if (ca)
+        return check_ca(x);
+    /* We need to do digital signatures or key agreement */
+    if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT))
+        return 0;
+    /* nsCertType if present should allow SSL client use */
+    if (ns_reject(x, NS_SSL_CLIENT))
+        return 0;
+    return 1;
+}
+
+/*
+ * Key usage needed for TLS/SSL server: digital signature, encipherment or
+ * key agreement. The ssl code can check this more thoroughly for individual
+ * key types.
+ */
+#define KU_TLS \
+        (KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT|KU_KEY_AGREEMENT)
+
+static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    if (xku_reject(x, XKU_SSL_SERVER))
+        return 0;
+    if (ca)
+        return check_ca(x);
+
+    if (ns_reject(x, NS_SSL_SERVER))
+        return 0;
+    if (ku_reject(x, KU_TLS))
+        return 0;
+
+    return 1;
+
+}
+
+static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca)
+{
+    int ret;
+    ret = check_purpose_ssl_server(xp, x, ca);
+    if (!ret || ca)
+        return ret;
+    /* We need to encipher or Netscape complains */
+    if (ku_reject(x, KU_KEY_ENCIPHERMENT))
+        return 0;
+    return ret;
+}
+
+/* purpose_smime returns one if |x| is a valid S/MIME leaf (|ca| is zero) or CA
+ * (|ca| is one) certificate, and zero otherwise. */
+static int purpose_smime(const X509 *x, int ca)
+{
+    if (xku_reject(x, XKU_SMIME))
+        return 0;
+    if (ca) {
+        /* check nsCertType if present */
+        if ((x->ex_flags & EXFLAG_NSCERT) &&
+            (x->ex_nscert & NS_SMIME_CA) == 0) {
+          return 0;
+        }
+
+        return check_ca(x);
+    }
+    if (x->ex_flags & EXFLAG_NSCERT) {
+        return (x->ex_nscert & NS_SMIME) == NS_SMIME;
+    }
+    return 1;
+}
+
+static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x,
+                                    int ca)
+{
+    int ret;
+    ret = purpose_smime(x, ca);
+    if (!ret || ca)
+        return ret;
+    if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION))
+        return 0;
+    return ret;
+}
+
+static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x,
+                                       int ca)
+{
+    int ret;
+    ret = purpose_smime(x, ca);
+    if (!ret || ca)
+        return ret;
+    if (ku_reject(x, KU_KEY_ENCIPHERMENT))
+        return 0;
+    return ret;
+}
+
+static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x,
+                                  int ca)
+{
+    if (ca) {
+        return check_ca(x);
+    }
+    if (ku_reject(x, KU_CRL_SIGN))
+        return 0;
+    return 1;
+}
+
+/*
+ * OCSP helper: this is *not* a full OCSP check. It just checks that each CA
+ * is valid. Additional checks must be made on the chain.
+ */
+
+static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca)
+{
+    if (ca)
+        return check_ca(x);
+    /* leaf certificate is checked in OCSP_verify() */
+    return 1;
+}
+
+static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x,
+                                        int ca)
+{
+    int i_ext;
+
+    /* If ca is true we must return if this is a valid CA certificate. */
+    if (ca)
+        return check_ca(x);
+
+    /*
+     * Check the optional key usage field:
+     * if Key Usage is present, it must be one of digitalSignature
+     * and/or nonRepudiation (other values are not consistent and shall
+     * be rejected).
+     */
+    if ((x->ex_flags & EXFLAG_KUSAGE)
+        && ((x->ex_kusage & ~(KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)) ||
+            !(x->ex_kusage & (KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE))))
+        return 0;
+
+    /* Only time stamp key usage is permitted and it's required. */
+    if (!(x->ex_flags & EXFLAG_XKUSAGE) || x->ex_xkusage != XKU_TIMESTAMP)
+        return 0;
+
+    /* Extended Key Usage MUST be critical */
+    i_ext = X509_get_ext_by_NID((X509 *)x, NID_ext_key_usage, -1);
+    if (i_ext >= 0) {
+        X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext);
+        if (!X509_EXTENSION_get_critical(ext))
+            return 0;
+    }
+
+    return 1;
+}
+
+static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca)
+{
+    return 1;
+}
+
+/*
+ * Various checks to see if one certificate issued the second. This can be
+ * used to prune a set of possible issuer certificates which have been looked
+ * up using some simple method such as by subject name. These are: 1. Check
+ * issuer_name(subject) == subject_name(issuer) 2. If akid(subject) exists
+ * check it matches issuer 3. If key_usage(issuer) exists check it supports
+ * certificate signing returns 0 for OK, positive for reason for mismatch,
+ * reasons match codes for X509_verify_cert()
+ */
+
+int X509_check_issued(X509 *issuer, X509 *subject)
+{
+    if (X509_NAME_cmp(X509_get_subject_name(issuer),
+                      X509_get_issuer_name(subject)))
+        return X509_V_ERR_SUBJECT_ISSUER_MISMATCH;
+    x509v3_cache_extensions(issuer);
+    x509v3_cache_extensions(subject);
+
+    if (subject->akid) {
+        int ret = X509_check_akid(issuer, subject->akid);
+        if (ret != X509_V_OK)
+            return ret;
+    }
+
+    if (subject->ex_flags & EXFLAG_PROXY) {
+        if (ku_reject(issuer, KU_DIGITAL_SIGNATURE))
+            return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE;
+    } else if (ku_reject(issuer, KU_KEY_CERT_SIGN))
+        return X509_V_ERR_KEYUSAGE_NO_CERTSIGN;
+    return X509_V_OK;
+}
+
+int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
+{
+
+    if (!akid)
+        return X509_V_OK;
+
+    /* Check key ids (if present) */
+    if (akid->keyid && issuer->skid &&
+        ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
+        return X509_V_ERR_AKID_SKID_MISMATCH;
+    /* Check serial number */
+    if (akid->serial &&
+        ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
+        return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
+    /* Check issuer name */
+    if (akid->issuer) {
+        /*
+         * Ugh, for some peculiar reason AKID includes SEQUENCE OF
+         * GeneralName. So look for a DirName. There may be more than one but
+         * we only take any notice of the first.
+         */
+        GENERAL_NAMES *gens;
+        GENERAL_NAME *gen;
+        X509_NAME *nm = NULL;
+        size_t i;
+        gens = akid->issuer;
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            gen = sk_GENERAL_NAME_value(gens, i);
+            if (gen->type == GEN_DIRNAME) {
+                nm = gen->d.dirn;
+                break;
+            }
+        }
+        if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer)))
+            return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
+    }
+    return X509_V_OK;
+}
+
+uint32_t X509_get_extension_flags(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    return x->ex_flags;
+}
+
+uint32_t X509_get_key_usage(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    if (x->ex_flags & EXFLAG_KUSAGE)
+        return x->ex_kusage;
+    return UINT32_MAX;
+}
+
+uint32_t X509_get_extended_key_usage(X509 *x)
+{
+    /* Call for side-effect of computing hash and caching extensions */
+    X509_check_purpose(x, -1, -1);
+    if (x->ex_flags & EXFLAG_XKUSAGE)
+        return x->ex_xkusage;
+    return UINT32_MAX;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c
new file mode 100644
index 0000000..ffb4198
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c	
@@ -0,0 +1,155 @@
+/* v3_skey.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "internal.h"
+
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str);
+const X509V3_EXT_METHOD v3_skey_id = {
+    NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
+    (X509V3_EXT_S2I)s2i_skey_id,
+    0, 0, 0, 0,
+    NULL
+};
+
+char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct)
+{
+    return x509v3_bytes_to_hex(oct->data, oct->length);
+}
+
+ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    long length;
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (!(oct->data = x509v3_hex_to_bytes(str, &length))) {
+        M_ASN1_OCTET_STRING_free(oct);
+        return NULL;
+    }
+
+    oct->length = length;
+
+    return oct;
+
+}
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    ASN1_BIT_STRING *pk;
+    unsigned char pkey_dig[EVP_MAX_MD_SIZE];
+    unsigned int diglen;
+
+    if (strcmp(str, "hash"))
+        return s2i_ASN1_OCTET_STRING(method, ctx, str);
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (ctx && (ctx->flags == CTX_TEST))
+        return oct;
+
+    if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    if (ctx->subject_req)
+        pk = ctx->subject_req->req_info->pubkey->public_key;
+    else
+        pk = ctx->subject_cert->cert_info->key->public_key;
+
+    if (!pk) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    if (!EVP_Digest
+        (pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
+        goto err;
+
+    if (!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    return oct;
+
+ err:
+    M_ASN1_OCTET_STRING_free(oct);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c.grpc_back
new file mode 100644
index 0000000..6a16e78
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_skey.c.grpc_back	
@@ -0,0 +1,155 @@
+/* v3_skey.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "internal.h"
+
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str);
+const X509V3_EXT_METHOD v3_skey_id = {
+    NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
+    0, 0, 0, 0,
+    (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
+    (X509V3_EXT_S2I)s2i_skey_id,
+    0, 0, 0, 0,
+    NULL
+};
+
+char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct)
+{
+    return x509v3_bytes_to_hex(oct->data, oct->length);
+}
+
+ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
+                                         X509V3_CTX *ctx, char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    long length;
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (!(oct->data = x509v3_hex_to_bytes(str, &length))) {
+        M_ASN1_OCTET_STRING_free(oct);
+        return NULL;
+    }
+
+    oct->length = length;
+
+    return oct;
+
+}
+
+static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
+                                      X509V3_CTX *ctx, char *str)
+{
+    ASN1_OCTET_STRING *oct;
+    ASN1_BIT_STRING *pk;
+    unsigned char pkey_dig[EVP_MAX_MD_SIZE];
+    unsigned int diglen;
+
+    if (strcmp(str, "hash"))
+        return s2i_ASN1_OCTET_STRING(method, ctx, str);
+
+    if (!(oct = M_ASN1_OCTET_STRING_new())) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+
+    if (ctx && (ctx->flags == CTX_TEST))
+        return oct;
+
+    if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    if (ctx->subject_req)
+        pk = ctx->subject_req->req_info->pubkey->public_key;
+    else
+        pk = ctx->subject_cert->cert_info->key->public_key;
+
+    if (!pk) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_PUBLIC_KEY);
+        goto err;
+    }
+
+    if (!EVP_Digest
+        (pk->data, pk->length, pkey_dig, &diglen, EVP_sha1(), NULL))
+        goto err;
+
+    if (!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    return oct;
+
+ err:
+    M_ASN1_OCTET_STRING_free(oct);
+    return NULL;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c
new file mode 100644
index 0000000..75ff4bc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c	
@@ -0,0 +1,274 @@
+/* v3_sxnet.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/asn1t.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+/* Support for Thawte strong extranet extension */
+
+#define SXNET_TEST
+
+static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
+                     int indent);
+#ifdef SXNET_TEST
+static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                        STACK_OF(CONF_VALUE) *nval);
+#endif
+const X509V3_EXT_METHOD v3_sxnet = {
+    NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+#ifdef SXNET_TEST
+    (X509V3_EXT_V2I)sxnet_v2i,
+#else
+    0,
+#endif
+    (X509V3_EXT_I2R)sxnet_i2r,
+    0,
+    NULL
+};
+
+ASN1_SEQUENCE(SXNETID) = {
+        ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
+        ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(SXNETID)
+
+IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
+
+ASN1_SEQUENCE(SXNET) = {
+        ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
+        ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
+} ASN1_SEQUENCE_END(SXNET)
+
+IMPLEMENT_ASN1_FUNCTIONS(SXNET)
+
+static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
+                     int indent)
+{
+    long v;
+    char *tmp;
+    SXNETID *id;
+    size_t i;
+    v = ASN1_INTEGER_get(sx->version);
+    BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
+    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
+        id = sk_SXNETID_value(sx->ids, i);
+        tmp = i2s_ASN1_INTEGER(NULL, id->zone);
+        BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
+        OPENSSL_free(tmp);
+        M_ASN1_OCTET_STRING_print(out, id->user);
+    }
+    return 1;
+}
+
+#ifdef SXNET_TEST
+
+/*
+ * NBB: this is used for testing only. It should *not* be used for anything
+ * else because it will just take static IDs from the configuration file and
+ * they should really be separate values for each user.
+ */
+
+static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                        STACK_OF(CONF_VALUE) *nval)
+{
+    CONF_VALUE *cnf;
+    SXNET *sx = NULL;
+    size_t i;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
+            return NULL;
+    }
+    return sx;
+}
+
+#endif
+
+/* Strong Extranet utility functions */
+
+/* Add an id given the zone as an ASCII number */
+
+int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen)
+{
+    ASN1_INTEGER *izone = NULL;
+    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
+        return 0;
+    }
+    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
+}
+
+/* Add an id given the zone as an unsigned long */
+
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
+                       int userlen)
+{
+    ASN1_INTEGER *izone = NULL;
+    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        M_ASN1_INTEGER_free(izone);
+        return 0;
+    }
+    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
+
+}
+
+/*
+ * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
+ * passed integer and doesn't make a copy so don't free it up afterwards.
+ */
+
+int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,
+                         int userlen)
+{
+    SXNET *sx = NULL;
+    SXNETID *id = NULL;
+    if (!psx || !zone || !user) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return 0;
+    }
+    if (userlen == -1)
+        userlen = strlen(user);
+    if (userlen > 64) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_USER_TOO_LONG);
+        return 0;
+    }
+    if (!*psx) {
+        if (!(sx = SXNET_new()))
+            goto err;
+        if (!ASN1_INTEGER_set(sx->version, 0))
+            goto err;
+        *psx = sx;
+    } else
+        sx = *psx;
+    if (SXNET_get_id_INTEGER(sx, zone)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_DUPLICATE_ZONE_ID);
+        return 0;
+    }
+
+    if (!(id = SXNETID_new()))
+        goto err;
+    if (userlen == -1)
+        userlen = strlen(user);
+
+    if (!M_ASN1_OCTET_STRING_set(id->user, user, userlen))
+        goto err;
+    if (!sk_SXNETID_push(sx->ids, id))
+        goto err;
+    id->zone = zone;
+    return 1;
+
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    SXNETID_free(id);
+    SXNET_free(sx);
+    *psx = NULL;
+    return 0;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
+{
+    ASN1_INTEGER *izone = NULL;
+    ASN1_OCTET_STRING *oct;
+    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
+        return NULL;
+    }
+    oct = SXNET_get_id_INTEGER(sx, izone);
+    M_ASN1_INTEGER_free(izone);
+    return oct;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
+{
+    ASN1_INTEGER *izone = NULL;
+    ASN1_OCTET_STRING *oct;
+    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        M_ASN1_INTEGER_free(izone);
+        return NULL;
+    }
+    oct = SXNET_get_id_INTEGER(sx, izone);
+    M_ASN1_INTEGER_free(izone);
+    return oct;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
+{
+    SXNETID *id;
+    size_t i;
+    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
+        id = sk_SXNETID_value(sx->ids, i);
+        if (!M_ASN1_INTEGER_cmp(id->zone, zone))
+            return id->user;
+    }
+    return NULL;
+}
+
+IMPLEMENT_ASN1_SET_OF(SXNETID)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c.grpc_back
new file mode 100644
index 0000000..51c5a67
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_sxnet.c.grpc_back	
@@ -0,0 +1,274 @@
+/* v3_sxnet.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+/* Support for Thawte strong extranet extension */
+
+#define SXNET_TEST
+
+static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
+                     int indent);
+#ifdef SXNET_TEST
+static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                        STACK_OF(CONF_VALUE) *nval);
+#endif
+const X509V3_EXT_METHOD v3_sxnet = {
+    NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
+    0, 0, 0, 0,
+    0, 0,
+    0,
+#ifdef SXNET_TEST
+    (X509V3_EXT_V2I)sxnet_v2i,
+#else
+    0,
+#endif
+    (X509V3_EXT_I2R)sxnet_i2r,
+    0,
+    NULL
+};
+
+ASN1_SEQUENCE(SXNETID) = {
+        ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
+        ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
+} ASN1_SEQUENCE_END(SXNETID)
+
+IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
+
+ASN1_SEQUENCE(SXNET) = {
+        ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
+        ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
+} ASN1_SEQUENCE_END(SXNET)
+
+IMPLEMENT_ASN1_FUNCTIONS(SXNET)
+
+static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
+                     int indent)
+{
+    long v;
+    char *tmp;
+    SXNETID *id;
+    size_t i;
+    v = ASN1_INTEGER_get(sx->version);
+    BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
+    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
+        id = sk_SXNETID_value(sx->ids, i);
+        tmp = i2s_ASN1_INTEGER(NULL, id->zone);
+        BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
+        OPENSSL_free(tmp);
+        M_ASN1_OCTET_STRING_print(out, id->user);
+    }
+    return 1;
+}
+
+#ifdef SXNET_TEST
+
+/*
+ * NBB: this is used for testing only. It should *not* be used for anything
+ * else because it will just take static IDs from the configuration file and
+ * they should really be separate values for each user.
+ */
+
+static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                        STACK_OF(CONF_VALUE) *nval)
+{
+    CONF_VALUE *cnf;
+    SXNET *sx = NULL;
+    size_t i;
+    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
+        cnf = sk_CONF_VALUE_value(nval, i);
+        if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
+            return NULL;
+    }
+    return sx;
+}
+
+#endif
+
+/* Strong Extranet utility functions */
+
+/* Add an id given the zone as an ASCII number */
+
+int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen)
+{
+    ASN1_INTEGER *izone = NULL;
+    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
+        return 0;
+    }
+    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
+}
+
+/* Add an id given the zone as an unsigned long */
+
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
+                       int userlen)
+{
+    ASN1_INTEGER *izone = NULL;
+    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        M_ASN1_INTEGER_free(izone);
+        return 0;
+    }
+    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
+
+}
+
+/*
+ * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
+ * passed integer and doesn't make a copy so don't free it up afterwards.
+ */
+
+int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,
+                         int userlen)
+{
+    SXNET *sx = NULL;
+    SXNETID *id = NULL;
+    if (!psx || !zone || !user) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return 0;
+    }
+    if (userlen == -1)
+        userlen = strlen(user);
+    if (userlen > 64) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_USER_TOO_LONG);
+        return 0;
+    }
+    if (!*psx) {
+        if (!(sx = SXNET_new()))
+            goto err;
+        if (!ASN1_INTEGER_set(sx->version, 0))
+            goto err;
+        *psx = sx;
+    } else
+        sx = *psx;
+    if (SXNET_get_id_INTEGER(sx, zone)) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_DUPLICATE_ZONE_ID);
+        return 0;
+    }
+
+    if (!(id = SXNETID_new()))
+        goto err;
+    if (userlen == -1)
+        userlen = strlen(user);
+
+    if (!M_ASN1_OCTET_STRING_set(id->user, user, userlen))
+        goto err;
+    if (!sk_SXNETID_push(sx->ids, id))
+        goto err;
+    id->zone = zone;
+    return 1;
+
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    SXNETID_free(id);
+    SXNET_free(sx);
+    *psx = NULL;
+    return 0;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
+{
+    ASN1_INTEGER *izone = NULL;
+    ASN1_OCTET_STRING *oct;
+    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
+        return NULL;
+    }
+    oct = SXNET_get_id_INTEGER(sx, izone);
+    M_ASN1_INTEGER_free(izone);
+    return oct;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
+{
+    ASN1_INTEGER *izone = NULL;
+    ASN1_OCTET_STRING *oct;
+    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        M_ASN1_INTEGER_free(izone);
+        return NULL;
+    }
+    oct = SXNET_get_id_INTEGER(sx, izone);
+    M_ASN1_INTEGER_free(izone);
+    return oct;
+}
+
+ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
+{
+    SXNETID *id;
+    size_t i;
+    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
+        id = sk_SXNETID_value(sx->ids, i);
+        if (!M_ASN1_INTEGER_cmp(id->zone, zone))
+            return id->user;
+    }
+    return NULL;
+}
+
+IMPLEMENT_ASN1_SET_OF(SXNETID)
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c
new file mode 100644
index 0000000..3f8a00c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c	
@@ -0,0 +1,1395 @@
+/* v3_utl.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* X509 v3 extension utilities */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/x509v3.h>
+
+#include "../conf/internal.h"
+#include "../internal.h"
+#include "internal.h"
+
+
+static char *strip_spaces(char *name);
+static int sk_strcmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b);
+static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name,
+                                           GENERAL_NAMES *gens);
+static void str_free(OPENSSL_STRING str);
+static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email);
+
+static int ipv4_from_asc(unsigned char *v4, const char *in);
+static int ipv6_from_asc(unsigned char *v6, const char *in);
+static int ipv6_cb(const char *elem, int len, void *usr);
+static int ipv6_hex(unsigned char *out, const char *in, int inlen);
+
+/* Add a CONF_VALUE name value pair to stack */
+
+int X509V3_add_value(const char *name, const char *value,
+                     STACK_OF(CONF_VALUE) **extlist)
+{
+    CONF_VALUE *vtmp = NULL;
+    char *tname = NULL, *tvalue = NULL;
+    if (name && !(tname = OPENSSL_strdup(name)))
+        goto err;
+    if (value && !(tvalue = OPENSSL_strdup(value)))
+        goto err;
+    if (!(vtmp = CONF_VALUE_new()))
+        goto err;
+    if (!*extlist && !(*extlist = sk_CONF_VALUE_new_null()))
+        goto err;
+    vtmp->section = NULL;
+    vtmp->name = tname;
+    vtmp->value = tvalue;
+    if (!sk_CONF_VALUE_push(*extlist, vtmp))
+        goto err;
+    return 1;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    if (vtmp)
+        OPENSSL_free(vtmp);
+    if (tname)
+        OPENSSL_free(tname);
+    if (tvalue)
+        OPENSSL_free(tvalue);
+    return 0;
+}
+
+int X509V3_add_value_uchar(const char *name, const unsigned char *value,
+                           STACK_OF(CONF_VALUE) **extlist)
+{
+    return X509V3_add_value(name, (const char *)value, extlist);
+}
+
+/* Free function for STACK_OF(CONF_VALUE) */
+
+void X509V3_conf_free(CONF_VALUE *conf)
+{
+    if (!conf)
+        return;
+    if (conf->name)
+        OPENSSL_free(conf->name);
+    if (conf->value)
+        OPENSSL_free(conf->value);
+    if (conf->section)
+        OPENSSL_free(conf->section);
+    OPENSSL_free(conf);
+}
+
+int X509V3_add_value_bool(const char *name, int asn1_bool,
+                          STACK_OF(CONF_VALUE) **extlist)
+{
+    if (asn1_bool)
+        return X509V3_add_value(name, "TRUE", extlist);
+    return X509V3_add_value(name, "FALSE", extlist);
+}
+
+int X509V3_add_value_bool_nf(char *name, int asn1_bool,
+                             STACK_OF(CONF_VALUE) **extlist)
+{
+    if (asn1_bool)
+        return X509V3_add_value(name, "TRUE", extlist);
+    return 1;
+}
+
+static char *bignum_to_string(const BIGNUM *bn)
+{
+    char *tmp, *ret;
+    size_t len;
+
+    /*
+     * Display large numbers in hex and small numbers in decimal. Converting to
+     * decimal takes quadratic time and is no more useful than hex for large
+     * numbers.
+     */
+    if (BN_num_bits(bn) < 32) {
+        return BN_bn2dec(bn);
+    }
+
+    tmp = BN_bn2hex(bn);
+    if (tmp == NULL) {
+        return NULL;
+    }
+
+    len = strlen(tmp) + 3;
+    ret = OPENSSL_malloc(len);
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(tmp);
+        return NULL;
+    }
+
+    /* Prepend "0x", but place it after the "-" if negative. */
+    if (tmp[0] == '-') {
+        OPENSSL_strlcpy(ret, "-0x", len);
+        OPENSSL_strlcat(ret, tmp + 1, len);
+    } else {
+        OPENSSL_strlcpy(ret, "0x", len);
+        OPENSSL_strlcat(ret, tmp, len);
+    }
+    OPENSSL_free(tmp);
+    return ret;
+}
+
+char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
+{
+    BIGNUM *bntmp = NULL;
+    char *strtmp = NULL;
+    if (!a)
+        return NULL;
+    if (!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
+        !(strtmp = bignum_to_string(bntmp)))
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    BN_free(bntmp);
+    return strtmp;
+}
+
+char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
+{
+    BIGNUM *bntmp = NULL;
+    char *strtmp = NULL;
+    if (!a)
+        return NULL;
+    if (!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
+        !(strtmp = bignum_to_string(bntmp)))
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    BN_free(bntmp);
+    return strtmp;
+}
+
+ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
+{
+    BIGNUM *bn = NULL;
+    ASN1_INTEGER *aint;
+    int isneg, ishex;
+    int ret;
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+        return 0;
+    }
+    bn = BN_new();
+    if (value[0] == '-') {
+        value++;
+        isneg = 1;
+    } else
+        isneg = 0;
+
+    if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
+        value += 2;
+        ishex = 1;
+    } else
+        ishex = 0;
+
+    if (ishex)
+        ret = BN_hex2bn(&bn, value);
+    else
+        ret = BN_dec2bn(&bn, value);
+
+    if (!ret || value[ret]) {
+        BN_free(bn);
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_BN_DEC2BN_ERROR);
+        return 0;
+    }
+
+    if (isneg && BN_is_zero(bn))
+        isneg = 0;
+
+    aint = BN_to_ASN1_INTEGER(bn, NULL);
+    BN_free(bn);
+    if (!aint) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
+        return 0;
+    }
+    if (isneg)
+        aint->type |= V_ASN1_NEG;
+    return aint;
+}
+
+int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+                         STACK_OF(CONF_VALUE) **extlist)
+{
+    char *strtmp;
+    int ret;
+    if (!aint)
+        return 1;
+    if (!(strtmp = i2s_ASN1_INTEGER(NULL, aint)))
+        return 0;
+    ret = X509V3_add_value(name, strtmp, extlist);
+    OPENSSL_free(strtmp);
+    return ret;
+}
+
+int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
+{
+    char *btmp;
+    if (!(btmp = value->value))
+        goto err;
+    if (!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
+        || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
+        || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
+        *asn1_bool = 0xff;
+        return 1;
+    } else if (!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
+               || !strcmp(btmp, "N") || !strcmp(btmp, "n")
+               || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
+        *asn1_bool = 0;
+        return 1;
+    }
+ err:
+    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_BOOLEAN_STRING);
+    X509V3_conf_err(value);
+    return 0;
+}
+
+int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
+{
+    ASN1_INTEGER *itmp;
+    if (!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
+        X509V3_conf_err(value);
+        return 0;
+    }
+    *aint = itmp;
+    return 1;
+}
+
+#define HDR_NAME        1
+#define HDR_VALUE       2
+
+/*
+ * #define DEBUG
+ */
+
+STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
+{
+    char *p, *q, c;
+    char *ntmp, *vtmp;
+    STACK_OF(CONF_VALUE) *values = NULL;
+    char *linebuf;
+    int state;
+    /* We are going to modify the line so copy it first */
+    linebuf = OPENSSL_strdup(line);
+    if (linebuf == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    state = HDR_NAME;
+    ntmp = NULL;
+    /* Go through all characters */
+    for (p = linebuf, q = linebuf; (c = *p) && (c != '\r') && (c != '\n');
+         p++) {
+
+        switch (state) {
+        case HDR_NAME:
+            if (c == ':') {
+                state = HDR_VALUE;
+                *p = 0;
+                ntmp = strip_spaces(q);
+                if (!ntmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+                    goto err;
+                }
+                q = p + 1;
+            } else if (c == ',') {
+                *p = 0;
+                ntmp = strip_spaces(q);
+                q = p + 1;
+#if 0
+                printf("%s\n", ntmp);
+#endif
+                if (!ntmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+                    goto err;
+                }
+                X509V3_add_value(ntmp, NULL, &values);
+            }
+            break;
+
+        case HDR_VALUE:
+            if (c == ',') {
+                state = HDR_NAME;
+                *p = 0;
+                vtmp = strip_spaces(q);
+#if 0
+                printf("%s\n", ntmp);
+#endif
+                if (!vtmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+                    goto err;
+                }
+                X509V3_add_value(ntmp, vtmp, &values);
+                ntmp = NULL;
+                q = p + 1;
+            }
+
+        }
+    }
+
+    if (state == HDR_VALUE) {
+        vtmp = strip_spaces(q);
+#if 0
+        printf("%s=%s\n", ntmp, vtmp);
+#endif
+        if (!vtmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+            goto err;
+        }
+        X509V3_add_value(ntmp, vtmp, &values);
+    } else {
+        ntmp = strip_spaces(q);
+#if 0
+        printf("%s\n", ntmp);
+#endif
+        if (!ntmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+            goto err;
+        }
+        X509V3_add_value(ntmp, NULL, &values);
+    }
+    OPENSSL_free(linebuf);
+    return values;
+
+ err:
+    OPENSSL_free(linebuf);
+    sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
+    return NULL;
+
+}
+
+/* Delete leading and trailing spaces from a string */
+static char *strip_spaces(char *name)
+{
+    char *p, *q;
+    /* Skip over leading spaces */
+    p = name;
+    while (*p && isspace((unsigned char)*p))
+        p++;
+    if (!*p)
+        return NULL;
+    q = p + strlen(p) - 1;
+    while ((q != p) && isspace((unsigned char)*q))
+        q--;
+    if (p != q)
+        q[1] = 0;
+    if (!*p)
+        return NULL;
+    return p;
+}
+
+/* hex string utilities */
+
+/*
+ * Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
+ * hex representation @@@ (Contents of buffer are always kept in ASCII, also
+ * on EBCDIC machines)
+ */
+
+char *x509v3_bytes_to_hex(const unsigned char *buffer, long len)
+{
+    char *tmp, *q;
+    const unsigned char *p;
+    int i;
+    static const char hexdig[] = "0123456789ABCDEF";
+    if (!buffer || !len)
+        return NULL;
+    if (!(tmp = OPENSSL_malloc(len * 3 + 1))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    q = tmp;
+    for (i = 0, p = buffer; i < len; i++, p++) {
+        *q++ = hexdig[(*p >> 4) & 0xf];
+        *q++ = hexdig[*p & 0xf];
+        *q++ = ':';
+    }
+    q[-1] = 0;
+
+    return tmp;
+}
+
+unsigned char *x509v3_hex_to_bytes(const char *str, long *len)
+{
+    unsigned char *hexbuf, *q;
+    unsigned char ch, cl, *p;
+    if (!str) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return NULL;
+    }
+    if (!(hexbuf = OPENSSL_malloc(strlen(str) >> 1)))
+        goto err;
+    for (p = (unsigned char *)str, q = hexbuf; *p;) {
+        ch = *p++;
+        if (ch == ':')
+            continue;
+        cl = *p++;
+        if (!cl) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_ODD_NUMBER_OF_DIGITS);
+            OPENSSL_free(hexbuf);
+            return NULL;
+        }
+
+        if ((ch >= '0') && (ch <= '9'))
+            ch -= '0';
+        else if ((ch >= 'a') && (ch <= 'f'))
+            ch -= 'a' - 10;
+        else if ((ch >= 'A') && (ch <= 'F'))
+            ch -= 'A' - 10;
+        else
+            goto badhex;
+
+        if ((cl >= '0') && (cl <= '9'))
+            cl -= '0';
+        else if ((cl >= 'a') && (cl <= 'f'))
+            cl -= 'a' - 10;
+        else if ((cl >= 'A') && (cl <= 'F'))
+            cl -= 'A' - 10;
+        else
+            goto badhex;
+
+        *q++ = (ch << 4) | cl;
+    }
+
+    if (len)
+        *len = q - hexbuf;
+
+    return hexbuf;
+
+ err:
+    if (hexbuf)
+        OPENSSL_free(hexbuf);
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+
+ badhex:
+    OPENSSL_free(hexbuf);
+    OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_HEX_DIGIT);
+    return NULL;
+
+}
+
+int x509v3_name_cmp(const char *name, const char *cmp)
+{
+    int len, ret;
+    char c;
+    len = strlen(cmp);
+    if ((ret = strncmp(name, cmp, len)))
+        return ret;
+    c = name[len];
+    if (!c || (c == '.'))
+        return 0;
+    return 1;
+}
+
+static int sk_strcmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b)
+{
+    return strcmp(*a, *b);
+}
+
+STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x)
+{
+    GENERAL_NAMES *gens;
+    STACK_OF(OPENSSL_STRING) *ret;
+
+    gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    ret = get_email(X509_get_subject_name(x), gens);
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return ret;
+}
+
+STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x)
+{
+    AUTHORITY_INFO_ACCESS *info;
+    STACK_OF(OPENSSL_STRING) *ret = NULL;
+    size_t i;
+
+    info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL);
+    if (!info)
+        return NULL;
+    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) {
+        ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i);
+        if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) {
+            if (ad->location->type == GEN_URI) {
+                if (!append_ia5
+                    (&ret, ad->location->d.uniformResourceIdentifier))
+                    break;
+            }
+        }
+    }
+    AUTHORITY_INFO_ACCESS_free(info);
+    return ret;
+}
+
+STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x)
+{
+    GENERAL_NAMES *gens;
+    STACK_OF(X509_EXTENSION) *exts;
+    STACK_OF(OPENSSL_STRING) *ret;
+
+    exts = X509_REQ_get_extensions(x);
+    gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL);
+    ret = get_email(X509_REQ_get_subject_name(x), gens);
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+    return ret;
+}
+
+static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name,
+                                           GENERAL_NAMES *gens)
+{
+    STACK_OF(OPENSSL_STRING) *ret = NULL;
+    X509_NAME_ENTRY *ne;
+    ASN1_IA5STRING *email;
+    GENERAL_NAME *gen;
+    int i;
+    size_t j;
+    /* Now add any email address(es) to STACK */
+    i = -1;
+    /* First supplied X509_NAME */
+    while ((i = X509_NAME_get_index_by_NID(name,
+                                           NID_pkcs9_emailAddress, i)) >= 0) {
+        ne = X509_NAME_get_entry(name, i);
+        email = X509_NAME_ENTRY_get_data(ne);
+        if (!append_ia5(&ret, email))
+            return NULL;
+    }
+    for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
+        gen = sk_GENERAL_NAME_value(gens, j);
+        if (gen->type != GEN_EMAIL)
+            continue;
+        if (!append_ia5(&ret, gen->d.ia5))
+            return NULL;
+    }
+    return ret;
+}
+
+static void str_free(OPENSSL_STRING str)
+{
+    OPENSSL_free(str);
+}
+
+static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email)
+{
+    char *emtmp;
+    /* First some sanity checks */
+    if (email->type != V_ASN1_IA5STRING)
+        return 1;
+    if (!email->data || !email->length)
+        return 1;
+    if (!*sk)
+        *sk = sk_OPENSSL_STRING_new(sk_strcmp);
+    if (!*sk)
+        return 0;
+    /* Don't add duplicates */
+    sk_OPENSSL_STRING_sort(*sk);
+    if (sk_OPENSSL_STRING_find(*sk, NULL, (char *)email->data))
+        return 1;
+    emtmp = OPENSSL_strdup((char *)email->data);
+    if (!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) {
+        X509_email_free(*sk);
+        *sk = NULL;
+        return 0;
+    }
+    return 1;
+}
+
+void X509_email_free(STACK_OF(OPENSSL_STRING) *sk)
+{
+    sk_OPENSSL_STRING_pop_free(sk, str_free);
+}
+
+typedef int (*equal_fn) (const unsigned char *pattern, size_t pattern_len,
+                         const unsigned char *subject, size_t subject_len,
+                         unsigned int flags);
+
+/* Skip pattern prefix to match "wildcard" subject */
+static void skip_prefix(const unsigned char **p, size_t *plen,
+                        const unsigned char *subject, size_t subject_len,
+                        unsigned int flags)
+{
+    const unsigned char *pattern = *p;
+    size_t pattern_len = *plen;
+
+    /*
+     * If subject starts with a leading '.' followed by more octets, and
+     * pattern is longer, compare just an equal-length suffix with the
+     * full subject (starting at the '.'), provided the prefix contains
+     * no NULs.
+     */
+    if ((flags & _X509_CHECK_FLAG_DOT_SUBDOMAINS) == 0)
+        return;
+
+    while (pattern_len > subject_len && *pattern) {
+        if ((flags & X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS) &&
+            *pattern == '.')
+            break;
+        ++pattern;
+        --pattern_len;
+    }
+
+    /* Skip if entire prefix acceptable */
+    if (pattern_len == subject_len) {
+        *p = pattern;
+        *plen = pattern_len;
+    }
+}
+
+/* Compare while ASCII ignoring case. */
+static int equal_nocase(const unsigned char *pattern, size_t pattern_len,
+                        const unsigned char *subject, size_t subject_len,
+                        unsigned int flags)
+{
+    skip_prefix(&pattern, &pattern_len, subject, subject_len, flags);
+    if (pattern_len != subject_len)
+        return 0;
+    while (pattern_len) {
+        unsigned char l = *pattern;
+        unsigned char r = *subject;
+        /* The pattern must not contain NUL characters. */
+        if (l == 0)
+            return 0;
+        if (l != r) {
+            if ('A' <= l && l <= 'Z')
+                l = (l - 'A') + 'a';
+            if ('A' <= r && r <= 'Z')
+                r = (r - 'A') + 'a';
+            if (l != r)
+                return 0;
+        }
+        ++pattern;
+        ++subject;
+        --pattern_len;
+    }
+    return 1;
+}
+
+/* Compare using OPENSSL_memcmp. */
+static int equal_case(const unsigned char *pattern, size_t pattern_len,
+                      const unsigned char *subject, size_t subject_len,
+                      unsigned int flags)
+{
+    skip_prefix(&pattern, &pattern_len, subject, subject_len, flags);
+    if (pattern_len != subject_len)
+        return 0;
+    return !OPENSSL_memcmp(pattern, subject, pattern_len);
+}
+
+/*
+ * RFC 5280, section 7.5, requires that only the domain is compared in a
+ * case-insensitive manner.
+ */
+static int equal_email(const unsigned char *a, size_t a_len,
+                       const unsigned char *b, size_t b_len,
+                       unsigned int unused_flags)
+{
+    size_t i = a_len;
+    if (a_len != b_len)
+        return 0;
+    /*
+     * We search backwards for the '@' character, so that we do not have to
+     * deal with quoted local-parts.  The domain part is compared in a
+     * case-insensitive manner.
+     */
+    while (i > 0) {
+        --i;
+        if (a[i] == '@' || b[i] == '@') {
+            if (!equal_nocase(a + i, a_len - i, b + i, a_len - i, 0))
+                return 0;
+            break;
+        }
+    }
+    if (i == 0)
+        i = a_len;
+    return equal_case(a, i, b, i, 0);
+}
+
+/*
+ * Compare the prefix and suffix with the subject, and check that the
+ * characters in-between are valid.
+ */
+static int wildcard_match(const unsigned char *prefix, size_t prefix_len,
+                          const unsigned char *suffix, size_t suffix_len,
+                          const unsigned char *subject, size_t subject_len,
+                          unsigned int flags)
+{
+    const unsigned char *wildcard_start;
+    const unsigned char *wildcard_end;
+    const unsigned char *p;
+    int allow_multi = 0;
+    int allow_idna = 0;
+
+    if (subject_len < prefix_len + suffix_len)
+        return 0;
+    if (!equal_nocase(prefix, prefix_len, subject, prefix_len, flags))
+        return 0;
+    wildcard_start = subject + prefix_len;
+    wildcard_end = subject + (subject_len - suffix_len);
+    if (!equal_nocase(wildcard_end, suffix_len, suffix, suffix_len, flags))
+        return 0;
+    /*
+     * If the wildcard makes up the entire first label, it must match at
+     * least one character.
+     */
+    if (prefix_len == 0 && *suffix == '.') {
+        if (wildcard_start == wildcard_end)
+            return 0;
+        allow_idna = 1;
+        if (flags & X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS)
+            allow_multi = 1;
+    }
+    /* IDNA labels cannot match partial wildcards */
+    if (!allow_idna &&
+        subject_len >= 4
+        && OPENSSL_strncasecmp((char *)subject, "xn--", 4) == 0)
+        return 0;
+    /* The wildcard may match a literal '*' */
+    if (wildcard_end == wildcard_start + 1 && *wildcard_start == '*')
+        return 1;
+    /*
+     * Check that the part matched by the wildcard contains only
+     * permitted characters and only matches a single label unless
+     * allow_multi is set.
+     */
+    for (p = wildcard_start; p != wildcard_end; ++p)
+        if (!(('0' <= *p && *p <= '9') ||
+              ('A' <= *p && *p <= 'Z') ||
+              ('a' <= *p && *p <= 'z') ||
+              *p == '-' || (allow_multi && *p == '.')))
+            return 0;
+    return 1;
+}
+
+#define LABEL_START     (1 << 0)
+#define LABEL_END       (1 << 1)
+#define LABEL_HYPHEN    (1 << 2)
+#define LABEL_IDNA      (1 << 3)
+
+static const unsigned char *valid_star(const unsigned char *p, size_t len,
+                                       unsigned int flags)
+{
+    const unsigned char *star = 0;
+    size_t i;
+    int state = LABEL_START;
+    int dots = 0;
+    for (i = 0; i < len; ++i) {
+        /*
+         * Locate first and only legal wildcard, either at the start
+         * or end of a non-IDNA first and not final label.
+         */
+        if (p[i] == '*') {
+            int atstart = (state & LABEL_START);
+            int atend = (i == len - 1 || p[i + 1] == '.');
+            /*
+             * At most one wildcard per pattern.
+             * No wildcards in IDNA labels.
+             * No wildcards after the first label.
+             */
+            if (star != NULL || (state & LABEL_IDNA) != 0 || dots)
+                return NULL;
+            /* Only full-label '*.example.com' wildcards? */
+            if ((flags & X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS)
+                && (!atstart || !atend))
+                return NULL;
+            /* No 'foo*bar' wildcards */
+            if (!atstart && !atend)
+                return NULL;
+            star = &p[i];
+            state &= ~LABEL_START;
+        } else if (('a' <= p[i] && p[i] <= 'z')
+                   || ('A' <= p[i] && p[i] <= 'Z')
+                   || ('0' <= p[i] && p[i] <= '9')) {
+            if ((state & LABEL_START) != 0
+                && len - i >= 4
+                && OPENSSL_strncasecmp((char *)&p[i], "xn--", 4) == 0)
+                state |= LABEL_IDNA;
+            state &= ~(LABEL_HYPHEN | LABEL_START);
+        } else if (p[i] == '.') {
+            if ((state & (LABEL_HYPHEN | LABEL_START)) != 0)
+                return NULL;
+            state = LABEL_START;
+            ++dots;
+        } else if (p[i] == '-') {
+            /* no domain/subdomain starts with '-' */
+            if ((state & LABEL_START) != 0)
+                return NULL;
+            state |= LABEL_HYPHEN;
+        } else
+            return NULL;
+    }
+
+    /*
+     * The final label must not end in a hyphen or ".", and
+     * there must be at least two dots after the star.
+     */
+    if ((state & (LABEL_START | LABEL_HYPHEN)) != 0 || dots < 2)
+        return NULL;
+    return star;
+}
+
+/* Compare using wildcards. */
+static int equal_wildcard(const unsigned char *pattern, size_t pattern_len,
+                          const unsigned char *subject, size_t subject_len,
+                          unsigned int flags)
+{
+    const unsigned char *star = NULL;
+
+    /*
+     * Subject names starting with '.' can only match a wildcard pattern
+     * via a subject sub-domain pattern suffix match.
+     */
+    if (!(subject_len > 1 && subject[0] == '.'))
+        star = valid_star(pattern, pattern_len, flags);
+    if (star == NULL)
+        return equal_nocase(pattern, pattern_len,
+                            subject, subject_len, flags);
+    return wildcard_match(pattern, star - pattern,
+                          star + 1, (pattern + pattern_len) - star - 1,
+                          subject, subject_len, flags);
+}
+
+int x509v3_looks_like_dns_name(const unsigned char *in, size_t len) {
+    /* This function is used as a heuristic for whether a common name is a
+     * hostname to be matched, or merely a decorative name to describe the
+     * subject. This heuristic must be applied to both name constraints and the
+     * common name fallback, so it must be loose enough to accept hostname
+     * common names, and tight enough to reject decorative common names. */
+
+    if (len > 0 && in[len - 1] == '.') {
+        len--;
+    }
+
+    /* Wildcards are allowed in front. */
+    if (len >= 2 && in[0] == '*' && in[1] == '.') {
+        in += 2;
+        len -= 2;
+    }
+
+    if (len == 0) {
+        return 0;
+    }
+
+    size_t label_start = 0;
+    for (size_t i = 0; i < len; i++) {
+        unsigned char c = in[i];
+        if ((c >= 'a' && c <= 'z') ||
+            (c >= '0' && c <= '9') ||
+            (c >= 'A' && c <= 'Z') ||
+            (c == '-' && i > label_start) ||
+            /* These are not valid characters in hostnames, but commonly found
+             * in deployments outside the Web PKI. */
+            c == '_' ||
+            c == ':') {
+            continue;
+        }
+
+        /* Labels must not be empty. */
+        if (c == '.' && i > label_start && i < len - 1) {
+            label_start = i + 1;
+            continue;
+        }
+
+        return 0;
+    }
+
+    return 1;
+}
+
+/*
+ * Compare an ASN1_STRING to a supplied string. If they match return 1. If
+ * cmp_type > 0 only compare if string matches the type, otherwise convert it
+ * to UTF8.
+ */
+
+static int do_check_string(ASN1_STRING *a, int cmp_type, equal_fn equal,
+                           unsigned int flags, int check_type, const char *b,
+                           size_t blen, char **peername)
+{
+    int rv = 0;
+
+    if (!a->data || !a->length)
+        return 0;
+    if (cmp_type > 0) {
+        if (cmp_type != a->type)
+            return 0;
+        if (cmp_type == V_ASN1_IA5STRING)
+            rv = equal(a->data, a->length, (unsigned char *)b, blen, flags);
+        else if (a->length == (int)blen && !OPENSSL_memcmp(a->data, b, blen))
+            rv = 1;
+        if (rv > 0 && peername)
+            *peername = OPENSSL_strndup((char *)a->data, a->length);
+    } else {
+        int astrlen;
+        unsigned char *astr;
+        astrlen = ASN1_STRING_to_UTF8(&astr, a);
+        if (astrlen < 0)
+            return -1;
+        /*
+         * We check the common name against DNS name constraints if it passes
+         * |x509v3_looks_like_dns_name|. Thus we must not consider common names
+         * for DNS fallbacks if they fail this check.
+         */
+        if (check_type == GEN_DNS &&
+            !x509v3_looks_like_dns_name(astr, astrlen)) {
+            rv = 0;
+        } else {
+            rv = equal(astr, astrlen, (unsigned char *)b, blen, flags);
+        }
+        if (rv > 0 && peername)
+            *peername = OPENSSL_strndup((char *)astr, astrlen);
+        OPENSSL_free(astr);
+    }
+    return rv;
+}
+
+static int do_x509_check(X509 *x, const char *chk, size_t chklen,
+                         unsigned int flags, int check_type, char **peername)
+{
+    GENERAL_NAMES *gens = NULL;
+    X509_NAME *name = NULL;
+    size_t i;
+    int j;
+    int cnid = NID_undef;
+    int alt_type;
+    int rv = 0;
+    equal_fn equal;
+
+    /* See below, this flag is internal-only */
+    flags &= ~_X509_CHECK_FLAG_DOT_SUBDOMAINS;
+    if (check_type == GEN_EMAIL) {
+        cnid = NID_pkcs9_emailAddress;
+        alt_type = V_ASN1_IA5STRING;
+        equal = equal_email;
+    } else if (check_type == GEN_DNS) {
+        cnid = NID_commonName;
+        /* Implicit client-side DNS sub-domain pattern */
+        if (chklen > 1 && chk[0] == '.')
+            flags |= _X509_CHECK_FLAG_DOT_SUBDOMAINS;
+        alt_type = V_ASN1_IA5STRING;
+        if (flags & X509_CHECK_FLAG_NO_WILDCARDS)
+            equal = equal_nocase;
+        else
+            equal = equal_wildcard;
+    } else {
+        alt_type = V_ASN1_OCTET_STRING;
+        equal = equal_case;
+    }
+
+    gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    if (gens) {
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            GENERAL_NAME *gen;
+            ASN1_STRING *cstr;
+            gen = sk_GENERAL_NAME_value(gens, i);
+            if (gen->type != check_type)
+                continue;
+            if (check_type == GEN_EMAIL)
+                cstr = gen->d.rfc822Name;
+            else if (check_type == GEN_DNS)
+                cstr = gen->d.dNSName;
+            else
+                cstr = gen->d.iPAddress;
+            /* Positive on success, negative on error! */
+            if ((rv = do_check_string(cstr, alt_type, equal, flags, check_type,
+                                      chk, chklen, peername)) != 0)
+                break;
+        }
+        GENERAL_NAMES_free(gens);
+        return rv;
+    }
+
+    /* We're done if CN-ID is not pertinent */
+    if (cnid == NID_undef || (flags & X509_CHECK_FLAG_NEVER_CHECK_SUBJECT))
+        return 0;
+
+    j = -1;
+    name = X509_get_subject_name(x);
+    while ((j = X509_NAME_get_index_by_NID(name, cnid, j)) >= 0) {
+        X509_NAME_ENTRY *ne;
+        ASN1_STRING *str;
+        ne = X509_NAME_get_entry(name, j);
+        str = X509_NAME_ENTRY_get_data(ne);
+        /* Positive on success, negative on error! */
+        if ((rv = do_check_string(str, -1, equal, flags, check_type,
+                                  chk, chklen, peername)) != 0)
+            return rv;
+    }
+    return 0;
+}
+
+int X509_check_host(X509 *x, const char *chk, size_t chklen,
+                    unsigned int flags, char **peername)
+{
+    if (chk == NULL)
+        return -2;
+    if (OPENSSL_memchr(chk, '\0', chklen))
+        return -2;
+    return do_x509_check(x, chk, chklen, flags, GEN_DNS, peername);
+}
+
+int X509_check_email(X509 *x, const char *chk, size_t chklen,
+                     unsigned int flags)
+{
+    if (chk == NULL)
+        return -2;
+    if (OPENSSL_memchr(chk, '\0', chklen))
+        return -2;
+    return do_x509_check(x, chk, chklen, flags, GEN_EMAIL, NULL);
+}
+
+int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+                  unsigned int flags)
+{
+    if (chk == NULL)
+        return -2;
+    return do_x509_check(x, (char *)chk, chklen, flags, GEN_IPADD, NULL);
+}
+
+int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags)
+{
+    unsigned char ipout[16];
+    size_t iplen;
+
+    if (ipasc == NULL)
+        return -2;
+    iplen = (size_t)a2i_ipadd(ipout, ipasc);
+    if (iplen == 0)
+        return -2;
+    return do_x509_check(x, (char *)ipout, iplen, flags, GEN_IPADD, NULL);
+}
+
+/*
+ * Convert IP addresses both IPv4 and IPv6 into an OCTET STRING compatible
+ * with RFC3280.
+ */
+
+ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc)
+{
+    unsigned char ipout[16];
+    ASN1_OCTET_STRING *ret;
+    int iplen;
+
+    /* If string contains a ':' assume IPv6 */
+
+    iplen = a2i_ipadd(ipout, ipasc);
+
+    if (!iplen)
+        return NULL;
+
+    ret = ASN1_OCTET_STRING_new();
+    if (!ret)
+        return NULL;
+    if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) {
+        ASN1_OCTET_STRING_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc)
+{
+    ASN1_OCTET_STRING *ret = NULL;
+    unsigned char ipout[32];
+    char *iptmp = NULL, *p;
+    int iplen1, iplen2;
+    p = strchr(ipasc, '/');
+    if (!p)
+        return NULL;
+    iptmp = OPENSSL_strdup(ipasc);
+    if (!iptmp)
+        return NULL;
+    p = iptmp + (p - ipasc);
+    *p++ = 0;
+
+    iplen1 = a2i_ipadd(ipout, iptmp);
+
+    if (!iplen1)
+        goto err;
+
+    iplen2 = a2i_ipadd(ipout + iplen1, p);
+
+    OPENSSL_free(iptmp);
+    iptmp = NULL;
+
+    if (!iplen2 || (iplen1 != iplen2))
+        goto err;
+
+    ret = ASN1_OCTET_STRING_new();
+    if (!ret)
+        goto err;
+    if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2))
+        goto err;
+
+    return ret;
+
+ err:
+    if (iptmp)
+        OPENSSL_free(iptmp);
+    if (ret)
+        ASN1_OCTET_STRING_free(ret);
+    return NULL;
+}
+
+int a2i_ipadd(unsigned char *ipout, const char *ipasc)
+{
+    /* If string contains a ':' assume IPv6 */
+
+    if (strchr(ipasc, ':')) {
+        if (!ipv6_from_asc(ipout, ipasc))
+            return 0;
+        return 16;
+    } else {
+        if (!ipv4_from_asc(ipout, ipasc))
+            return 0;
+        return 4;
+    }
+}
+
+static int ipv4_from_asc(unsigned char *v4, const char *in)
+{
+    int a0, a1, a2, a3;
+    if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4)
+        return 0;
+    if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255)
+        || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255))
+        return 0;
+    v4[0] = a0;
+    v4[1] = a1;
+    v4[2] = a2;
+    v4[3] = a3;
+    return 1;
+}
+
+typedef struct {
+    /* Temporary store for IPV6 output */
+    unsigned char tmp[16];
+    /* Total number of bytes in tmp */
+    int total;
+    /* The position of a zero (corresponding to '::') */
+    int zero_pos;
+    /* Number of zeroes */
+    int zero_cnt;
+} IPV6_STAT;
+
+static int ipv6_from_asc(unsigned char *v6, const char *in)
+{
+    IPV6_STAT v6stat;
+    v6stat.total = 0;
+    v6stat.zero_pos = -1;
+    v6stat.zero_cnt = 0;
+    /*
+     * Treat the IPv6 representation as a list of values separated by ':'.
+     * The presence of a '::' will parse as one, two or three zero length
+     * elements.
+     */
+    if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat))
+        return 0;
+
+    /* Now for some sanity checks */
+
+    if (v6stat.zero_pos == -1) {
+        /* If no '::' must have exactly 16 bytes */
+        if (v6stat.total != 16)
+            return 0;
+    } else {
+        /* If '::' must have less than 16 bytes */
+        if (v6stat.total == 16)
+            return 0;
+        /* More than three zeroes is an error */
+        if (v6stat.zero_cnt > 3)
+            return 0;
+        /* Can only have three zeroes if nothing else present */
+        else if (v6stat.zero_cnt == 3) {
+            if (v6stat.total > 0)
+                return 0;
+        }
+        /* Can only have two zeroes if at start or end */
+        else if (v6stat.zero_cnt == 2) {
+            if ((v6stat.zero_pos != 0)
+                && (v6stat.zero_pos != v6stat.total))
+                return 0;
+        } else
+            /* Can only have one zero if *not* start or end */
+        {
+            if ((v6stat.zero_pos == 0)
+                || (v6stat.zero_pos == v6stat.total))
+                return 0;
+        }
+    }
+
+    /* Format result */
+
+    if (v6stat.zero_pos >= 0) {
+        /* Copy initial part */
+        OPENSSL_memcpy(v6, v6stat.tmp, v6stat.zero_pos);
+        /* Zero middle */
+        OPENSSL_memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total);
+        /* Copy final part */
+        if (v6stat.total != v6stat.zero_pos)
+            OPENSSL_memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total,
+                           v6stat.tmp + v6stat.zero_pos,
+                           v6stat.total - v6stat.zero_pos);
+    } else
+        OPENSSL_memcpy(v6, v6stat.tmp, 16);
+
+    return 1;
+}
+
+static int ipv6_cb(const char *elem, int len, void *usr)
+{
+    IPV6_STAT *s = usr;
+    /* Error if 16 bytes written */
+    if (s->total == 16)
+        return 0;
+    if (len == 0) {
+        /* Zero length element, corresponds to '::' */
+        if (s->zero_pos == -1)
+            s->zero_pos = s->total;
+        /* If we've already got a :: its an error */
+        else if (s->zero_pos != s->total)
+            return 0;
+        s->zero_cnt++;
+    } else {
+        /* If more than 4 characters could be final a.b.c.d form */
+        if (len > 4) {
+            /* Need at least 4 bytes left */
+            if (s->total > 12)
+                return 0;
+            /* Must be end of string */
+            if (elem[len])
+                return 0;
+            if (!ipv4_from_asc(s->tmp + s->total, elem))
+                return 0;
+            s->total += 4;
+        } else {
+            if (!ipv6_hex(s->tmp + s->total, elem, len))
+                return 0;
+            s->total += 2;
+        }
+    }
+    return 1;
+}
+
+/*
+ * Convert a string of up to 4 hex digits into the corresponding IPv6 form.
+ */
+
+static int ipv6_hex(unsigned char *out, const char *in, int inlen)
+{
+    unsigned char c;
+    unsigned int num = 0;
+    if (inlen > 4)
+        return 0;
+    while (inlen--) {
+        c = *in++;
+        num <<= 4;
+        if ((c >= '0') && (c <= '9'))
+            num |= c - '0';
+        else if ((c >= 'A') && (c <= 'F'))
+            num |= c - 'A' + 10;
+        else if ((c >= 'a') && (c <= 'f'))
+            num |= c - 'a' + 10;
+        else
+            return 0;
+    }
+    out[0] = num >> 8;
+    out[1] = num & 0xff;
+    return 1;
+}
+
+int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF (CONF_VALUE) * dn_sk,
+                             unsigned long chtype)
+{
+    CONF_VALUE *v;
+    int mval;
+    size_t i;
+    char *p, *type;
+    if (!nm)
+        return 0;
+
+    for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
+        v = sk_CONF_VALUE_value(dn_sk, i);
+        type = v->name;
+        /*
+         * Skip past any leading X. X: X, etc to allow for multiple instances
+         */
+        for (p = type; *p; p++)
+            if ((*p == ':') || (*p == ',') || (*p == '.')) {
+                p++;
+                if (*p)
+                    type = p;
+                break;
+            }
+        if (*type == '+') {
+            mval = -1;
+            type++;
+        } else
+            mval = 0;
+        if (!X509_NAME_add_entry_by_txt(nm, type, chtype,
+                                        (unsigned char *)v->value, -1, -1,
+                                        mval))
+            return 0;
+
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c.grpc_back
new file mode 100644
index 0000000..9138ef7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/crypto/x509v3/v3_utl.c.grpc_back	
@@ -0,0 +1,1395 @@
+/* v3_utl.c */
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2003 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* X509 v3 extension utilities */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509v3.h>
+
+#include "../conf/internal.h"
+#include "../internal.h"
+#include "internal.h"
+
+
+static char *strip_spaces(char *name);
+static int sk_strcmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b);
+static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name,
+                                           GENERAL_NAMES *gens);
+static void str_free(OPENSSL_STRING str);
+static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email);
+
+static int ipv4_from_asc(unsigned char *v4, const char *in);
+static int ipv6_from_asc(unsigned char *v6, const char *in);
+static int ipv6_cb(const char *elem, int len, void *usr);
+static int ipv6_hex(unsigned char *out, const char *in, int inlen);
+
+/* Add a CONF_VALUE name value pair to stack */
+
+int X509V3_add_value(const char *name, const char *value,
+                     STACK_OF(CONF_VALUE) **extlist)
+{
+    CONF_VALUE *vtmp = NULL;
+    char *tname = NULL, *tvalue = NULL;
+    if (name && !(tname = OPENSSL_strdup(name)))
+        goto err;
+    if (value && !(tvalue = OPENSSL_strdup(value)))
+        goto err;
+    if (!(vtmp = CONF_VALUE_new()))
+        goto err;
+    if (!*extlist && !(*extlist = sk_CONF_VALUE_new_null()))
+        goto err;
+    vtmp->section = NULL;
+    vtmp->name = tname;
+    vtmp->value = tvalue;
+    if (!sk_CONF_VALUE_push(*extlist, vtmp))
+        goto err;
+    return 1;
+ err:
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    if (vtmp)
+        OPENSSL_free(vtmp);
+    if (tname)
+        OPENSSL_free(tname);
+    if (tvalue)
+        OPENSSL_free(tvalue);
+    return 0;
+}
+
+int X509V3_add_value_uchar(const char *name, const unsigned char *value,
+                           STACK_OF(CONF_VALUE) **extlist)
+{
+    return X509V3_add_value(name, (const char *)value, extlist);
+}
+
+/* Free function for STACK_OF(CONF_VALUE) */
+
+void X509V3_conf_free(CONF_VALUE *conf)
+{
+    if (!conf)
+        return;
+    if (conf->name)
+        OPENSSL_free(conf->name);
+    if (conf->value)
+        OPENSSL_free(conf->value);
+    if (conf->section)
+        OPENSSL_free(conf->section);
+    OPENSSL_free(conf);
+}
+
+int X509V3_add_value_bool(const char *name, int asn1_bool,
+                          STACK_OF(CONF_VALUE) **extlist)
+{
+    if (asn1_bool)
+        return X509V3_add_value(name, "TRUE", extlist);
+    return X509V3_add_value(name, "FALSE", extlist);
+}
+
+int X509V3_add_value_bool_nf(char *name, int asn1_bool,
+                             STACK_OF(CONF_VALUE) **extlist)
+{
+    if (asn1_bool)
+        return X509V3_add_value(name, "TRUE", extlist);
+    return 1;
+}
+
+static char *bignum_to_string(const BIGNUM *bn)
+{
+    char *tmp, *ret;
+    size_t len;
+
+    /*
+     * Display large numbers in hex and small numbers in decimal. Converting to
+     * decimal takes quadratic time and is no more useful than hex for large
+     * numbers.
+     */
+    if (BN_num_bits(bn) < 32) {
+        return BN_bn2dec(bn);
+    }
+
+    tmp = BN_bn2hex(bn);
+    if (tmp == NULL) {
+        return NULL;
+    }
+
+    len = strlen(tmp) + 3;
+    ret = OPENSSL_malloc(len);
+    if (ret == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(tmp);
+        return NULL;
+    }
+
+    /* Prepend "0x", but place it after the "-" if negative. */
+    if (tmp[0] == '-') {
+        OPENSSL_strlcpy(ret, "-0x", len);
+        OPENSSL_strlcat(ret, tmp + 1, len);
+    } else {
+        OPENSSL_strlcpy(ret, "0x", len);
+        OPENSSL_strlcat(ret, tmp, len);
+    }
+    OPENSSL_free(tmp);
+    return ret;
+}
+
+char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
+{
+    BIGNUM *bntmp = NULL;
+    char *strtmp = NULL;
+    if (!a)
+        return NULL;
+    if (!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
+        !(strtmp = bignum_to_string(bntmp)))
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    BN_free(bntmp);
+    return strtmp;
+}
+
+char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
+{
+    BIGNUM *bntmp = NULL;
+    char *strtmp = NULL;
+    if (!a)
+        return NULL;
+    if (!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
+        !(strtmp = bignum_to_string(bntmp)))
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    BN_free(bntmp);
+    return strtmp;
+}
+
+ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
+{
+    BIGNUM *bn = NULL;
+    ASN1_INTEGER *aint;
+    int isneg, ishex;
+    int ret;
+    if (!value) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+        return 0;
+    }
+    bn = BN_new();
+    if (value[0] == '-') {
+        value++;
+        isneg = 1;
+    } else
+        isneg = 0;
+
+    if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
+        value += 2;
+        ishex = 1;
+    } else
+        ishex = 0;
+
+    if (ishex)
+        ret = BN_hex2bn(&bn, value);
+    else
+        ret = BN_dec2bn(&bn, value);
+
+    if (!ret || value[ret]) {
+        BN_free(bn);
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_BN_DEC2BN_ERROR);
+        return 0;
+    }
+
+    if (isneg && BN_is_zero(bn))
+        isneg = 0;
+
+    aint = BN_to_ASN1_INTEGER(bn, NULL);
+    BN_free(bn);
+    if (!aint) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
+        return 0;
+    }
+    if (isneg)
+        aint->type |= V_ASN1_NEG;
+    return aint;
+}
+
+int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+                         STACK_OF(CONF_VALUE) **extlist)
+{
+    char *strtmp;
+    int ret;
+    if (!aint)
+        return 1;
+    if (!(strtmp = i2s_ASN1_INTEGER(NULL, aint)))
+        return 0;
+    ret = X509V3_add_value(name, strtmp, extlist);
+    OPENSSL_free(strtmp);
+    return ret;
+}
+
+int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
+{
+    char *btmp;
+    if (!(btmp = value->value))
+        goto err;
+    if (!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
+        || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
+        || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
+        *asn1_bool = 0xff;
+        return 1;
+    } else if (!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
+               || !strcmp(btmp, "N") || !strcmp(btmp, "n")
+               || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
+        *asn1_bool = 0;
+        return 1;
+    }
+ err:
+    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_BOOLEAN_STRING);
+    X509V3_conf_err(value);
+    return 0;
+}
+
+int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
+{
+    ASN1_INTEGER *itmp;
+    if (!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
+        X509V3_conf_err(value);
+        return 0;
+    }
+    *aint = itmp;
+    return 1;
+}
+
+#define HDR_NAME        1
+#define HDR_VALUE       2
+
+/*
+ * #define DEBUG
+ */
+
+STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
+{
+    char *p, *q, c;
+    char *ntmp, *vtmp;
+    STACK_OF(CONF_VALUE) *values = NULL;
+    char *linebuf;
+    int state;
+    /* We are going to modify the line so copy it first */
+    linebuf = OPENSSL_strdup(line);
+    if (linebuf == NULL) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+    state = HDR_NAME;
+    ntmp = NULL;
+    /* Go through all characters */
+    for (p = linebuf, q = linebuf; (c = *p) && (c != '\r') && (c != '\n');
+         p++) {
+
+        switch (state) {
+        case HDR_NAME:
+            if (c == ':') {
+                state = HDR_VALUE;
+                *p = 0;
+                ntmp = strip_spaces(q);
+                if (!ntmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+                    goto err;
+                }
+                q = p + 1;
+            } else if (c == ',') {
+                *p = 0;
+                ntmp = strip_spaces(q);
+                q = p + 1;
+#if 0
+                printf("%s\n", ntmp);
+#endif
+                if (!ntmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+                    goto err;
+                }
+                X509V3_add_value(ntmp, NULL, &values);
+            }
+            break;
+
+        case HDR_VALUE:
+            if (c == ',') {
+                state = HDR_NAME;
+                *p = 0;
+                vtmp = strip_spaces(q);
+#if 0
+                printf("%s\n", ntmp);
+#endif
+                if (!vtmp) {
+                    OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+                    goto err;
+                }
+                X509V3_add_value(ntmp, vtmp, &values);
+                ntmp = NULL;
+                q = p + 1;
+            }
+
+        }
+    }
+
+    if (state == HDR_VALUE) {
+        vtmp = strip_spaces(q);
+#if 0
+        printf("%s=%s\n", ntmp, vtmp);
+#endif
+        if (!vtmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_VALUE);
+            goto err;
+        }
+        X509V3_add_value(ntmp, vtmp, &values);
+    } else {
+        ntmp = strip_spaces(q);
+#if 0
+        printf("%s\n", ntmp);
+#endif
+        if (!ntmp) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_NAME);
+            goto err;
+        }
+        X509V3_add_value(ntmp, NULL, &values);
+    }
+    OPENSSL_free(linebuf);
+    return values;
+
+ err:
+    OPENSSL_free(linebuf);
+    sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
+    return NULL;
+
+}
+
+/* Delete leading and trailing spaces from a string */
+static char *strip_spaces(char *name)
+{
+    char *p, *q;
+    /* Skip over leading spaces */
+    p = name;
+    while (*p && isspace((unsigned char)*p))
+        p++;
+    if (!*p)
+        return NULL;
+    q = p + strlen(p) - 1;
+    while ((q != p) && isspace((unsigned char)*q))
+        q--;
+    if (p != q)
+        q[1] = 0;
+    if (!*p)
+        return NULL;
+    return p;
+}
+
+/* hex string utilities */
+
+/*
+ * Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
+ * hex representation @@@ (Contents of buffer are always kept in ASCII, also
+ * on EBCDIC machines)
+ */
+
+char *x509v3_bytes_to_hex(const unsigned char *buffer, long len)
+{
+    char *tmp, *q;
+    const unsigned char *p;
+    int i;
+    static const char hexdig[] = "0123456789ABCDEF";
+    if (!buffer || !len)
+        return NULL;
+    if (!(tmp = OPENSSL_malloc(len * 3 + 1))) {
+        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
+    q = tmp;
+    for (i = 0, p = buffer; i < len; i++, p++) {
+        *q++ = hexdig[(*p >> 4) & 0xf];
+        *q++ = hexdig[*p & 0xf];
+        *q++ = ':';
+    }
+    q[-1] = 0;
+
+    return tmp;
+}
+
+unsigned char *x509v3_hex_to_bytes(const char *str, long *len)
+{
+    unsigned char *hexbuf, *q;
+    unsigned char ch, cl, *p;
+    if (!str) {
+        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
+        return NULL;
+    }
+    if (!(hexbuf = OPENSSL_malloc(strlen(str) >> 1)))
+        goto err;
+    for (p = (unsigned char *)str, q = hexbuf; *p;) {
+        ch = *p++;
+        if (ch == ':')
+            continue;
+        cl = *p++;
+        if (!cl) {
+            OPENSSL_PUT_ERROR(X509V3, X509V3_R_ODD_NUMBER_OF_DIGITS);
+            OPENSSL_free(hexbuf);
+            return NULL;
+        }
+
+        if ((ch >= '0') && (ch <= '9'))
+            ch -= '0';
+        else if ((ch >= 'a') && (ch <= 'f'))
+            ch -= 'a' - 10;
+        else if ((ch >= 'A') && (ch <= 'F'))
+            ch -= 'A' - 10;
+        else
+            goto badhex;
+
+        if ((cl >= '0') && (cl <= '9'))
+            cl -= '0';
+        else if ((cl >= 'a') && (cl <= 'f'))
+            cl -= 'a' - 10;
+        else if ((cl >= 'A') && (cl <= 'F'))
+            cl -= 'A' - 10;
+        else
+            goto badhex;
+
+        *q++ = (ch << 4) | cl;
+    }
+
+    if (len)
+        *len = q - hexbuf;
+
+    return hexbuf;
+
+ err:
+    if (hexbuf)
+        OPENSSL_free(hexbuf);
+    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
+    return NULL;
+
+ badhex:
+    OPENSSL_free(hexbuf);
+    OPENSSL_PUT_ERROR(X509V3, X509V3_R_ILLEGAL_HEX_DIGIT);
+    return NULL;
+
+}
+
+int x509v3_name_cmp(const char *name, const char *cmp)
+{
+    int len, ret;
+    char c;
+    len = strlen(cmp);
+    if ((ret = strncmp(name, cmp, len)))
+        return ret;
+    c = name[len];
+    if (!c || (c == '.'))
+        return 0;
+    return 1;
+}
+
+static int sk_strcmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b)
+{
+    return strcmp(*a, *b);
+}
+
+STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x)
+{
+    GENERAL_NAMES *gens;
+    STACK_OF(OPENSSL_STRING) *ret;
+
+    gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    ret = get_email(X509_get_subject_name(x), gens);
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    return ret;
+}
+
+STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x)
+{
+    AUTHORITY_INFO_ACCESS *info;
+    STACK_OF(OPENSSL_STRING) *ret = NULL;
+    size_t i;
+
+    info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL);
+    if (!info)
+        return NULL;
+    for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) {
+        ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i);
+        if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) {
+            if (ad->location->type == GEN_URI) {
+                if (!append_ia5
+                    (&ret, ad->location->d.uniformResourceIdentifier))
+                    break;
+            }
+        }
+    }
+    AUTHORITY_INFO_ACCESS_free(info);
+    return ret;
+}
+
+STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x)
+{
+    GENERAL_NAMES *gens;
+    STACK_OF(X509_EXTENSION) *exts;
+    STACK_OF(OPENSSL_STRING) *ret;
+
+    exts = X509_REQ_get_extensions(x);
+    gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL);
+    ret = get_email(X509_REQ_get_subject_name(x), gens);
+    sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
+    sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+    return ret;
+}
+
+static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name,
+                                           GENERAL_NAMES *gens)
+{
+    STACK_OF(OPENSSL_STRING) *ret = NULL;
+    X509_NAME_ENTRY *ne;
+    ASN1_IA5STRING *email;
+    GENERAL_NAME *gen;
+    int i;
+    size_t j;
+    /* Now add any email address(es) to STACK */
+    i = -1;
+    /* First supplied X509_NAME */
+    while ((i = X509_NAME_get_index_by_NID(name,
+                                           NID_pkcs9_emailAddress, i)) >= 0) {
+        ne = X509_NAME_get_entry(name, i);
+        email = X509_NAME_ENTRY_get_data(ne);
+        if (!append_ia5(&ret, email))
+            return NULL;
+    }
+    for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
+        gen = sk_GENERAL_NAME_value(gens, j);
+        if (gen->type != GEN_EMAIL)
+            continue;
+        if (!append_ia5(&ret, gen->d.ia5))
+            return NULL;
+    }
+    return ret;
+}
+
+static void str_free(OPENSSL_STRING str)
+{
+    OPENSSL_free(str);
+}
+
+static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email)
+{
+    char *emtmp;
+    /* First some sanity checks */
+    if (email->type != V_ASN1_IA5STRING)
+        return 1;
+    if (!email->data || !email->length)
+        return 1;
+    if (!*sk)
+        *sk = sk_OPENSSL_STRING_new(sk_strcmp);
+    if (!*sk)
+        return 0;
+    /* Don't add duplicates */
+    sk_OPENSSL_STRING_sort(*sk);
+    if (sk_OPENSSL_STRING_find(*sk, NULL, (char *)email->data))
+        return 1;
+    emtmp = OPENSSL_strdup((char *)email->data);
+    if (!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) {
+        X509_email_free(*sk);
+        *sk = NULL;
+        return 0;
+    }
+    return 1;
+}
+
+void X509_email_free(STACK_OF(OPENSSL_STRING) *sk)
+{
+    sk_OPENSSL_STRING_pop_free(sk, str_free);
+}
+
+typedef int (*equal_fn) (const unsigned char *pattern, size_t pattern_len,
+                         const unsigned char *subject, size_t subject_len,
+                         unsigned int flags);
+
+/* Skip pattern prefix to match "wildcard" subject */
+static void skip_prefix(const unsigned char **p, size_t *plen,
+                        const unsigned char *subject, size_t subject_len,
+                        unsigned int flags)
+{
+    const unsigned char *pattern = *p;
+    size_t pattern_len = *plen;
+
+    /*
+     * If subject starts with a leading '.' followed by more octets, and
+     * pattern is longer, compare just an equal-length suffix with the
+     * full subject (starting at the '.'), provided the prefix contains
+     * no NULs.
+     */
+    if ((flags & _X509_CHECK_FLAG_DOT_SUBDOMAINS) == 0)
+        return;
+
+    while (pattern_len > subject_len && *pattern) {
+        if ((flags & X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS) &&
+            *pattern == '.')
+            break;
+        ++pattern;
+        --pattern_len;
+    }
+
+    /* Skip if entire prefix acceptable */
+    if (pattern_len == subject_len) {
+        *p = pattern;
+        *plen = pattern_len;
+    }
+}
+
+/* Compare while ASCII ignoring case. */
+static int equal_nocase(const unsigned char *pattern, size_t pattern_len,
+                        const unsigned char *subject, size_t subject_len,
+                        unsigned int flags)
+{
+    skip_prefix(&pattern, &pattern_len, subject, subject_len, flags);
+    if (pattern_len != subject_len)
+        return 0;
+    while (pattern_len) {
+        unsigned char l = *pattern;
+        unsigned char r = *subject;
+        /* The pattern must not contain NUL characters. */
+        if (l == 0)
+            return 0;
+        if (l != r) {
+            if ('A' <= l && l <= 'Z')
+                l = (l - 'A') + 'a';
+            if ('A' <= r && r <= 'Z')
+                r = (r - 'A') + 'a';
+            if (l != r)
+                return 0;
+        }
+        ++pattern;
+        ++subject;
+        --pattern_len;
+    }
+    return 1;
+}
+
+/* Compare using OPENSSL_memcmp. */
+static int equal_case(const unsigned char *pattern, size_t pattern_len,
+                      const unsigned char *subject, size_t subject_len,
+                      unsigned int flags)
+{
+    skip_prefix(&pattern, &pattern_len, subject, subject_len, flags);
+    if (pattern_len != subject_len)
+        return 0;
+    return !OPENSSL_memcmp(pattern, subject, pattern_len);
+}
+
+/*
+ * RFC 5280, section 7.5, requires that only the domain is compared in a
+ * case-insensitive manner.
+ */
+static int equal_email(const unsigned char *a, size_t a_len,
+                       const unsigned char *b, size_t b_len,
+                       unsigned int unused_flags)
+{
+    size_t i = a_len;
+    if (a_len != b_len)
+        return 0;
+    /*
+     * We search backwards for the '@' character, so that we do not have to
+     * deal with quoted local-parts.  The domain part is compared in a
+     * case-insensitive manner.
+     */
+    while (i > 0) {
+        --i;
+        if (a[i] == '@' || b[i] == '@') {
+            if (!equal_nocase(a + i, a_len - i, b + i, a_len - i, 0))
+                return 0;
+            break;
+        }
+    }
+    if (i == 0)
+        i = a_len;
+    return equal_case(a, i, b, i, 0);
+}
+
+/*
+ * Compare the prefix and suffix with the subject, and check that the
+ * characters in-between are valid.
+ */
+static int wildcard_match(const unsigned char *prefix, size_t prefix_len,
+                          const unsigned char *suffix, size_t suffix_len,
+                          const unsigned char *subject, size_t subject_len,
+                          unsigned int flags)
+{
+    const unsigned char *wildcard_start;
+    const unsigned char *wildcard_end;
+    const unsigned char *p;
+    int allow_multi = 0;
+    int allow_idna = 0;
+
+    if (subject_len < prefix_len + suffix_len)
+        return 0;
+    if (!equal_nocase(prefix, prefix_len, subject, prefix_len, flags))
+        return 0;
+    wildcard_start = subject + prefix_len;
+    wildcard_end = subject + (subject_len - suffix_len);
+    if (!equal_nocase(wildcard_end, suffix_len, suffix, suffix_len, flags))
+        return 0;
+    /*
+     * If the wildcard makes up the entire first label, it must match at
+     * least one character.
+     */
+    if (prefix_len == 0 && *suffix == '.') {
+        if (wildcard_start == wildcard_end)
+            return 0;
+        allow_idna = 1;
+        if (flags & X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS)
+            allow_multi = 1;
+    }
+    /* IDNA labels cannot match partial wildcards */
+    if (!allow_idna &&
+        subject_len >= 4
+        && OPENSSL_strncasecmp((char *)subject, "xn--", 4) == 0)
+        return 0;
+    /* The wildcard may match a literal '*' */
+    if (wildcard_end == wildcard_start + 1 && *wildcard_start == '*')
+        return 1;
+    /*
+     * Check that the part matched by the wildcard contains only
+     * permitted characters and only matches a single label unless
+     * allow_multi is set.
+     */
+    for (p = wildcard_start; p != wildcard_end; ++p)
+        if (!(('0' <= *p && *p <= '9') ||
+              ('A' <= *p && *p <= 'Z') ||
+              ('a' <= *p && *p <= 'z') ||
+              *p == '-' || (allow_multi && *p == '.')))
+            return 0;
+    return 1;
+}
+
+#define LABEL_START     (1 << 0)
+#define LABEL_END       (1 << 1)
+#define LABEL_HYPHEN    (1 << 2)
+#define LABEL_IDNA      (1 << 3)
+
+static const unsigned char *valid_star(const unsigned char *p, size_t len,
+                                       unsigned int flags)
+{
+    const unsigned char *star = 0;
+    size_t i;
+    int state = LABEL_START;
+    int dots = 0;
+    for (i = 0; i < len; ++i) {
+        /*
+         * Locate first and only legal wildcard, either at the start
+         * or end of a non-IDNA first and not final label.
+         */
+        if (p[i] == '*') {
+            int atstart = (state & LABEL_START);
+            int atend = (i == len - 1 || p[i + 1] == '.');
+            /*
+             * At most one wildcard per pattern.
+             * No wildcards in IDNA labels.
+             * No wildcards after the first label.
+             */
+            if (star != NULL || (state & LABEL_IDNA) != 0 || dots)
+                return NULL;
+            /* Only full-label '*.example.com' wildcards? */
+            if ((flags & X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS)
+                && (!atstart || !atend))
+                return NULL;
+            /* No 'foo*bar' wildcards */
+            if (!atstart && !atend)
+                return NULL;
+            star = &p[i];
+            state &= ~LABEL_START;
+        } else if (('a' <= p[i] && p[i] <= 'z')
+                   || ('A' <= p[i] && p[i] <= 'Z')
+                   || ('0' <= p[i] && p[i] <= '9')) {
+            if ((state & LABEL_START) != 0
+                && len - i >= 4
+                && OPENSSL_strncasecmp((char *)&p[i], "xn--", 4) == 0)
+                state |= LABEL_IDNA;
+            state &= ~(LABEL_HYPHEN | LABEL_START);
+        } else if (p[i] == '.') {
+            if ((state & (LABEL_HYPHEN | LABEL_START)) != 0)
+                return NULL;
+            state = LABEL_START;
+            ++dots;
+        } else if (p[i] == '-') {
+            /* no domain/subdomain starts with '-' */
+            if ((state & LABEL_START) != 0)
+                return NULL;
+            state |= LABEL_HYPHEN;
+        } else
+            return NULL;
+    }
+
+    /*
+     * The final label must not end in a hyphen or ".", and
+     * there must be at least two dots after the star.
+     */
+    if ((state & (LABEL_START | LABEL_HYPHEN)) != 0 || dots < 2)
+        return NULL;
+    return star;
+}
+
+/* Compare using wildcards. */
+static int equal_wildcard(const unsigned char *pattern, size_t pattern_len,
+                          const unsigned char *subject, size_t subject_len,
+                          unsigned int flags)
+{
+    const unsigned char *star = NULL;
+
+    /*
+     * Subject names starting with '.' can only match a wildcard pattern
+     * via a subject sub-domain pattern suffix match.
+     */
+    if (!(subject_len > 1 && subject[0] == '.'))
+        star = valid_star(pattern, pattern_len, flags);
+    if (star == NULL)
+        return equal_nocase(pattern, pattern_len,
+                            subject, subject_len, flags);
+    return wildcard_match(pattern, star - pattern,
+                          star + 1, (pattern + pattern_len) - star - 1,
+                          subject, subject_len, flags);
+}
+
+int x509v3_looks_like_dns_name(const unsigned char *in, size_t len) {
+    /* This function is used as a heuristic for whether a common name is a
+     * hostname to be matched, or merely a decorative name to describe the
+     * subject. This heuristic must be applied to both name constraints and the
+     * common name fallback, so it must be loose enough to accept hostname
+     * common names, and tight enough to reject decorative common names. */
+
+    if (len > 0 && in[len - 1] == '.') {
+        len--;
+    }
+
+    /* Wildcards are allowed in front. */
+    if (len >= 2 && in[0] == '*' && in[1] == '.') {
+        in += 2;
+        len -= 2;
+    }
+
+    if (len == 0) {
+        return 0;
+    }
+
+    size_t label_start = 0;
+    for (size_t i = 0; i < len; i++) {
+        unsigned char c = in[i];
+        if ((c >= 'a' && c <= 'z') ||
+            (c >= '0' && c <= '9') ||
+            (c >= 'A' && c <= 'Z') ||
+            (c == '-' && i > label_start) ||
+            /* These are not valid characters in hostnames, but commonly found
+             * in deployments outside the Web PKI. */
+            c == '_' ||
+            c == ':') {
+            continue;
+        }
+
+        /* Labels must not be empty. */
+        if (c == '.' && i > label_start && i < len - 1) {
+            label_start = i + 1;
+            continue;
+        }
+
+        return 0;
+    }
+
+    return 1;
+}
+
+/*
+ * Compare an ASN1_STRING to a supplied string. If they match return 1. If
+ * cmp_type > 0 only compare if string matches the type, otherwise convert it
+ * to UTF8.
+ */
+
+static int do_check_string(ASN1_STRING *a, int cmp_type, equal_fn equal,
+                           unsigned int flags, int check_type, const char *b,
+                           size_t blen, char **peername)
+{
+    int rv = 0;
+
+    if (!a->data || !a->length)
+        return 0;
+    if (cmp_type > 0) {
+        if (cmp_type != a->type)
+            return 0;
+        if (cmp_type == V_ASN1_IA5STRING)
+            rv = equal(a->data, a->length, (unsigned char *)b, blen, flags);
+        else if (a->length == (int)blen && !OPENSSL_memcmp(a->data, b, blen))
+            rv = 1;
+        if (rv > 0 && peername)
+            *peername = OPENSSL_strndup((char *)a->data, a->length);
+    } else {
+        int astrlen;
+        unsigned char *astr;
+        astrlen = ASN1_STRING_to_UTF8(&astr, a);
+        if (astrlen < 0)
+            return -1;
+        /*
+         * We check the common name against DNS name constraints if it passes
+         * |x509v3_looks_like_dns_name|. Thus we must not consider common names
+         * for DNS fallbacks if they fail this check.
+         */
+        if (check_type == GEN_DNS &&
+            !x509v3_looks_like_dns_name(astr, astrlen)) {
+            rv = 0;
+        } else {
+            rv = equal(astr, astrlen, (unsigned char *)b, blen, flags);
+        }
+        if (rv > 0 && peername)
+            *peername = OPENSSL_strndup((char *)astr, astrlen);
+        OPENSSL_free(astr);
+    }
+    return rv;
+}
+
+static int do_x509_check(X509 *x, const char *chk, size_t chklen,
+                         unsigned int flags, int check_type, char **peername)
+{
+    GENERAL_NAMES *gens = NULL;
+    X509_NAME *name = NULL;
+    size_t i;
+    int j;
+    int cnid = NID_undef;
+    int alt_type;
+    int rv = 0;
+    equal_fn equal;
+
+    /* See below, this flag is internal-only */
+    flags &= ~_X509_CHECK_FLAG_DOT_SUBDOMAINS;
+    if (check_type == GEN_EMAIL) {
+        cnid = NID_pkcs9_emailAddress;
+        alt_type = V_ASN1_IA5STRING;
+        equal = equal_email;
+    } else if (check_type == GEN_DNS) {
+        cnid = NID_commonName;
+        /* Implicit client-side DNS sub-domain pattern */
+        if (chklen > 1 && chk[0] == '.')
+            flags |= _X509_CHECK_FLAG_DOT_SUBDOMAINS;
+        alt_type = V_ASN1_IA5STRING;
+        if (flags & X509_CHECK_FLAG_NO_WILDCARDS)
+            equal = equal_nocase;
+        else
+            equal = equal_wildcard;
+    } else {
+        alt_type = V_ASN1_OCTET_STRING;
+        equal = equal_case;
+    }
+
+    gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
+    if (gens) {
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
+            GENERAL_NAME *gen;
+            ASN1_STRING *cstr;
+            gen = sk_GENERAL_NAME_value(gens, i);
+            if (gen->type != check_type)
+                continue;
+            if (check_type == GEN_EMAIL)
+                cstr = gen->d.rfc822Name;
+            else if (check_type == GEN_DNS)
+                cstr = gen->d.dNSName;
+            else
+                cstr = gen->d.iPAddress;
+            /* Positive on success, negative on error! */
+            if ((rv = do_check_string(cstr, alt_type, equal, flags, check_type,
+                                      chk, chklen, peername)) != 0)
+                break;
+        }
+        GENERAL_NAMES_free(gens);
+        return rv;
+    }
+
+    /* We're done if CN-ID is not pertinent */
+    if (cnid == NID_undef || (flags & X509_CHECK_FLAG_NEVER_CHECK_SUBJECT))
+        return 0;
+
+    j = -1;
+    name = X509_get_subject_name(x);
+    while ((j = X509_NAME_get_index_by_NID(name, cnid, j)) >= 0) {
+        X509_NAME_ENTRY *ne;
+        ASN1_STRING *str;
+        ne = X509_NAME_get_entry(name, j);
+        str = X509_NAME_ENTRY_get_data(ne);
+        /* Positive on success, negative on error! */
+        if ((rv = do_check_string(str, -1, equal, flags, check_type,
+                                  chk, chklen, peername)) != 0)
+            return rv;
+    }
+    return 0;
+}
+
+int X509_check_host(X509 *x, const char *chk, size_t chklen,
+                    unsigned int flags, char **peername)
+{
+    if (chk == NULL)
+        return -2;
+    if (OPENSSL_memchr(chk, '\0', chklen))
+        return -2;
+    return do_x509_check(x, chk, chklen, flags, GEN_DNS, peername);
+}
+
+int X509_check_email(X509 *x, const char *chk, size_t chklen,
+                     unsigned int flags)
+{
+    if (chk == NULL)
+        return -2;
+    if (OPENSSL_memchr(chk, '\0', chklen))
+        return -2;
+    return do_x509_check(x, chk, chklen, flags, GEN_EMAIL, NULL);
+}
+
+int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+                  unsigned int flags)
+{
+    if (chk == NULL)
+        return -2;
+    return do_x509_check(x, (char *)chk, chklen, flags, GEN_IPADD, NULL);
+}
+
+int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags)
+{
+    unsigned char ipout[16];
+    size_t iplen;
+
+    if (ipasc == NULL)
+        return -2;
+    iplen = (size_t)a2i_ipadd(ipout, ipasc);
+    if (iplen == 0)
+        return -2;
+    return do_x509_check(x, (char *)ipout, iplen, flags, GEN_IPADD, NULL);
+}
+
+/*
+ * Convert IP addresses both IPv4 and IPv6 into an OCTET STRING compatible
+ * with RFC3280.
+ */
+
+ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc)
+{
+    unsigned char ipout[16];
+    ASN1_OCTET_STRING *ret;
+    int iplen;
+
+    /* If string contains a ':' assume IPv6 */
+
+    iplen = a2i_ipadd(ipout, ipasc);
+
+    if (!iplen)
+        return NULL;
+
+    ret = ASN1_OCTET_STRING_new();
+    if (!ret)
+        return NULL;
+    if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) {
+        ASN1_OCTET_STRING_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc)
+{
+    ASN1_OCTET_STRING *ret = NULL;
+    unsigned char ipout[32];
+    char *iptmp = NULL, *p;
+    int iplen1, iplen2;
+    p = strchr(ipasc, '/');
+    if (!p)
+        return NULL;
+    iptmp = OPENSSL_strdup(ipasc);
+    if (!iptmp)
+        return NULL;
+    p = iptmp + (p - ipasc);
+    *p++ = 0;
+
+    iplen1 = a2i_ipadd(ipout, iptmp);
+
+    if (!iplen1)
+        goto err;
+
+    iplen2 = a2i_ipadd(ipout + iplen1, p);
+
+    OPENSSL_free(iptmp);
+    iptmp = NULL;
+
+    if (!iplen2 || (iplen1 != iplen2))
+        goto err;
+
+    ret = ASN1_OCTET_STRING_new();
+    if (!ret)
+        goto err;
+    if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2))
+        goto err;
+
+    return ret;
+
+ err:
+    if (iptmp)
+        OPENSSL_free(iptmp);
+    if (ret)
+        ASN1_OCTET_STRING_free(ret);
+    return NULL;
+}
+
+int a2i_ipadd(unsigned char *ipout, const char *ipasc)
+{
+    /* If string contains a ':' assume IPv6 */
+
+    if (strchr(ipasc, ':')) {
+        if (!ipv6_from_asc(ipout, ipasc))
+            return 0;
+        return 16;
+    } else {
+        if (!ipv4_from_asc(ipout, ipasc))
+            return 0;
+        return 4;
+    }
+}
+
+static int ipv4_from_asc(unsigned char *v4, const char *in)
+{
+    int a0, a1, a2, a3;
+    if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4)
+        return 0;
+    if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255)
+        || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255))
+        return 0;
+    v4[0] = a0;
+    v4[1] = a1;
+    v4[2] = a2;
+    v4[3] = a3;
+    return 1;
+}
+
+typedef struct {
+    /* Temporary store for IPV6 output */
+    unsigned char tmp[16];
+    /* Total number of bytes in tmp */
+    int total;
+    /* The position of a zero (corresponding to '::') */
+    int zero_pos;
+    /* Number of zeroes */
+    int zero_cnt;
+} IPV6_STAT;
+
+static int ipv6_from_asc(unsigned char *v6, const char *in)
+{
+    IPV6_STAT v6stat;
+    v6stat.total = 0;
+    v6stat.zero_pos = -1;
+    v6stat.zero_cnt = 0;
+    /*
+     * Treat the IPv6 representation as a list of values separated by ':'.
+     * The presence of a '::' will parse as one, two or three zero length
+     * elements.
+     */
+    if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat))
+        return 0;
+
+    /* Now for some sanity checks */
+
+    if (v6stat.zero_pos == -1) {
+        /* If no '::' must have exactly 16 bytes */
+        if (v6stat.total != 16)
+            return 0;
+    } else {
+        /* If '::' must have less than 16 bytes */
+        if (v6stat.total == 16)
+            return 0;
+        /* More than three zeroes is an error */
+        if (v6stat.zero_cnt > 3)
+            return 0;
+        /* Can only have three zeroes if nothing else present */
+        else if (v6stat.zero_cnt == 3) {
+            if (v6stat.total > 0)
+                return 0;
+        }
+        /* Can only have two zeroes if at start or end */
+        else if (v6stat.zero_cnt == 2) {
+            if ((v6stat.zero_pos != 0)
+                && (v6stat.zero_pos != v6stat.total))
+                return 0;
+        } else
+            /* Can only have one zero if *not* start or end */
+        {
+            if ((v6stat.zero_pos == 0)
+                || (v6stat.zero_pos == v6stat.total))
+                return 0;
+        }
+    }
+
+    /* Format result */
+
+    if (v6stat.zero_pos >= 0) {
+        /* Copy initial part */
+        OPENSSL_memcpy(v6, v6stat.tmp, v6stat.zero_pos);
+        /* Zero middle */
+        OPENSSL_memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total);
+        /* Copy final part */
+        if (v6stat.total != v6stat.zero_pos)
+            OPENSSL_memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total,
+                           v6stat.tmp + v6stat.zero_pos,
+                           v6stat.total - v6stat.zero_pos);
+    } else
+        OPENSSL_memcpy(v6, v6stat.tmp, 16);
+
+    return 1;
+}
+
+static int ipv6_cb(const char *elem, int len, void *usr)
+{
+    IPV6_STAT *s = usr;
+    /* Error if 16 bytes written */
+    if (s->total == 16)
+        return 0;
+    if (len == 0) {
+        /* Zero length element, corresponds to '::' */
+        if (s->zero_pos == -1)
+            s->zero_pos = s->total;
+        /* If we've already got a :: its an error */
+        else if (s->zero_pos != s->total)
+            return 0;
+        s->zero_cnt++;
+    } else {
+        /* If more than 4 characters could be final a.b.c.d form */
+        if (len > 4) {
+            /* Need at least 4 bytes left */
+            if (s->total > 12)
+                return 0;
+            /* Must be end of string */
+            if (elem[len])
+                return 0;
+            if (!ipv4_from_asc(s->tmp + s->total, elem))
+                return 0;
+            s->total += 4;
+        } else {
+            if (!ipv6_hex(s->tmp + s->total, elem, len))
+                return 0;
+            s->total += 2;
+        }
+    }
+    return 1;
+}
+
+/*
+ * Convert a string of up to 4 hex digits into the corresponding IPv6 form.
+ */
+
+static int ipv6_hex(unsigned char *out, const char *in, int inlen)
+{
+    unsigned char c;
+    unsigned int num = 0;
+    if (inlen > 4)
+        return 0;
+    while (inlen--) {
+        c = *in++;
+        num <<= 4;
+        if ((c >= '0') && (c <= '9'))
+            num |= c - '0';
+        else if ((c >= 'A') && (c <= 'F'))
+            num |= c - 'A' + 10;
+        else if ((c >= 'a') && (c <= 'f'))
+            num |= c - 'a' + 10;
+        else
+            return 0;
+    }
+    out[0] = num >> 8;
+    out[1] = num & 0xff;
+    return 1;
+}
+
+int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF (CONF_VALUE) * dn_sk,
+                             unsigned long chtype)
+{
+    CONF_VALUE *v;
+    int mval;
+    size_t i;
+    char *p, *type;
+    if (!nm)
+        return 0;
+
+    for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
+        v = sk_CONF_VALUE_value(dn_sk, i);
+        type = v->name;
+        /*
+         * Skip past any leading X. X: X, etc to allow for multiple instances
+         */
+        for (p = type; *p; p++)
+            if ((*p == ':') || (*p == ',') || (*p == '.')) {
+                p++;
+                if (*p)
+                    type = p;
+                break;
+            }
+        if (*type == '+') {
+            mval = -1;
+            type++;
+        } else
+            mval = 0;
+        if (!X509_NAME_add_entry_by_txt(nm, type, chtype,
+                                        (unsigned char *)v->value, -1, -1,
+                                        mval))
+            return 0;
+
+    }
+    return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/BoringSSL.modulemap b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/BoringSSL.modulemap
new file mode 100644
index 0000000..283008b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/BoringSSL.modulemap	
@@ -0,0 +1,6 @@
+  framework module openssl {
+    umbrella header "umbrella.h"
+    textual header "arm_arch.h"
+    export *
+    module * { export * }
+  }
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h
new file mode 100644
index 0000000..acfd6f8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h	
@@ -0,0 +1,459 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_AEAD_H
+#define OPENSSL_HEADER_AEAD_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Authenticated Encryption with Additional Data.
+//
+// AEAD couples confidentiality and integrity in a single primitive. AEAD
+// algorithms take a key and then can seal and open individual messages. Each
+// message has a unique, per-message nonce and, optionally, additional data
+// which is authenticated but not included in the ciphertext.
+//
+// The |EVP_AEAD_CTX_init| function initialises an |EVP_AEAD_CTX| structure and
+// performs any precomputation needed to use |aead| with |key|. The length of
+// the key, |key_len|, is given in bytes.
+//
+// The |tag_len| argument contains the length of the tags, in bytes, and allows
+// for the processing of truncated authenticators. A zero value indicates that
+// the default tag length should be used and this is defined as
+// |EVP_AEAD_DEFAULT_TAG_LENGTH| in order to make the code clear. Using
+// truncated tags increases an attacker's chance of creating a valid forgery.
+// Be aware that the attacker's chance may increase more than exponentially as
+// would naively be expected.
+//
+// When no longer needed, the initialised |EVP_AEAD_CTX| structure must be
+// passed to |EVP_AEAD_CTX_cleanup|, which will deallocate any memory used.
+//
+// With an |EVP_AEAD_CTX| in hand, one can seal and open messages. These
+// operations are intended to meet the standard notions of privacy and
+// authenticity for authenticated encryption. For formal definitions see
+// Bellare and Namprempre, "Authenticated encryption: relations among notions
+// and analysis of the generic composition paradigm," Lecture Notes in Computer
+// Science B<1976> (2000), 531–545,
+// http://www-cse.ucsd.edu/~mihir/papers/oem.html.
+//
+// When sealing messages, a nonce must be given. The length of the nonce is
+// fixed by the AEAD in use and is returned by |EVP_AEAD_nonce_length|. *The
+// nonce must be unique for all messages with the same key*. This is critically
+// important - nonce reuse may completely undermine the security of the AEAD.
+// Nonces may be predictable and public, so long as they are unique. Uniqueness
+// may be achieved with a simple counter or, if large enough, may be generated
+// randomly. The nonce must be passed into the "open" operation by the receiver
+// so must either be implicit (e.g. a counter), or must be transmitted along
+// with the sealed message.
+//
+// The "seal" and "open" operations are atomic - an entire message must be
+// encrypted or decrypted in a single call. Large messages may have to be split
+// up in order to accommodate this. When doing so, be mindful of the need not to
+// repeat nonces and the possibility that an attacker could duplicate, reorder
+// or drop message chunks. For example, using a single key for a given (large)
+// message and sealing chunks with nonces counting from zero would be secure as
+// long as the number of chunks was securely transmitted. (Otherwise an
+// attacker could truncate the message by dropping chunks from the end.)
+//
+// The number of chunks could be transmitted by prefixing it to the plaintext,
+// for example. This also assumes that no other message would ever use the same
+// key otherwise the rule that nonces must be unique for a given key would be
+// violated.
+//
+// The "seal" and "open" operations also permit additional data to be
+// authenticated via the |ad| parameter. This data is not included in the
+// ciphertext and must be identical for both the "seal" and "open" call. This
+// permits implicit context to be authenticated but may be empty if not needed.
+//
+// The "seal" and "open" operations may work in-place if the |out| and |in|
+// arguments are equal. Otherwise, if |out| and |in| alias, input data may be
+// overwritten before it is read. This situation will cause an error.
+//
+// The "seal" and "open" operations return one on success and zero on error.
+
+
+// AEAD algorithms.
+
+// EVP_aead_aes_128_gcm is AES-128 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm(void);
+
+// EVP_aead_aes_192_gcm is AES-192 in Galois Counter Mode.
+//
+// WARNING: AES-192 is superfluous and shouldn't exist. NIST should never have
+// defined it. Use only when interop with another system requires it, never
+// de novo.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_192_gcm(void);
+
+// EVP_aead_aes_256_gcm is AES-256 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm(void);
+
+// EVP_aead_chacha20_poly1305 is the AEAD built from ChaCha20 and
+// Poly1305 as described in RFC 7539.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
+
+// EVP_aead_xchacha20_poly1305 is ChaCha20-Poly1305 with an extended nonce that
+// makes random generation of nonces safe.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
+
+// EVP_aead_aes_128_ctr_hmac_sha256 is AES-128 in CTR mode with HMAC-SHA256 for
+// authentication. The nonce is 12 bytes; the bottom 32-bits are used as the
+// block counter, thus the maximum plaintext size is 64GB.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_256_ctr_hmac_sha256 is AES-256 in CTR mode with HMAC-SHA256 for
+// authentication. See |EVP_aead_aes_128_ctr_hmac_sha256| for details.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_128_gcm_siv is AES-128 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void);
+
+// EVP_aead_aes_256_gcm_siv is AES-256 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void);
+
+// EVP_aead_aes_128_ccm_bluetooth is AES-128-CCM with M=4 and L=2 (4-byte tags
+// and 13-byte nonces), as decribed in the Bluetooth Core Specification v5.0,
+// Volume 6, Part E, Section 1.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth(void);
+
+// EVP_aead_aes_128_ccm_bluetooth_8 is AES-128-CCM with M=8 and L=2 (8-byte tags
+// and 13-byte nonces), as used in the Bluetooth Mesh Networking Specification
+// v1.0.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth_8(void);
+
+// EVP_has_aes_hardware returns one if we enable hardware support for fast and
+// constant-time AES-GCM.
+OPENSSL_EXPORT int EVP_has_aes_hardware(void);
+
+
+// Utility functions.
+
+// EVP_AEAD_key_length returns the length, in bytes, of the keys used by
+// |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_nonce_length returns the length, in bytes, of the per-message nonce
+// for |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_overhead returns the maximum number of additional bytes added
+// by the act of sealing data with |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_tag_len returns the maximum tag length when using |aead|. This
+// is the largest value that can be passed as |tag_len| to
+// |EVP_AEAD_CTX_init|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
+
+
+// AEAD operations.
+
+union evp_aead_ctx_st_state {
+  uint8_t opaque[580];
+  uint64_t alignment;
+};
+
+// An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
+// and message-independent IV.
+typedef struct evp_aead_ctx_st {
+  const EVP_AEAD *aead;
+  union evp_aead_ctx_st_state state;
+  // tag_len may contain the actual length of the authentication tag if it is
+  // known at initialization time.
+  uint8_t tag_len;
+} EVP_AEAD_CTX;
+
+// EVP_AEAD_MAX_KEY_LENGTH contains the maximum key length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_KEY_LENGTH 80
+
+// EVP_AEAD_MAX_NONCE_LENGTH contains the maximum nonce length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_NONCE_LENGTH 24
+
+// EVP_AEAD_MAX_OVERHEAD contains the maximum overhead used by any AEAD
+// defined in this header.
+#define EVP_AEAD_MAX_OVERHEAD 64
+
+// EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
+// EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD should
+// be used.
+#define EVP_AEAD_DEFAULT_TAG_LENGTH 0
+
+// EVP_AEAD_CTX_zero sets an uninitialized |ctx| to the zero state. It must be
+// initialized with |EVP_AEAD_CTX_init| before use. It is safe, but not
+// necessary, to call |EVP_AEAD_CTX_cleanup| in this state. This may be used for
+// more uniform cleanup of |EVP_AEAD_CTX|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_zero(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_new allocates an |EVP_AEAD_CTX|, calls |EVP_AEAD_CTX_init| and
+// returns the |EVP_AEAD_CTX|, or NULL on error.
+OPENSSL_EXPORT EVP_AEAD_CTX *EVP_AEAD_CTX_new(const EVP_AEAD *aead,
+                                              const uint8_t *key,
+                                              size_t key_len, size_t tag_len);
+
+// EVP_AEAD_CTX_free calls |EVP_AEAD_CTX_cleanup| and |OPENSSL_free| on
+// |ctx|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_init initializes |ctx| for the given AEAD algorithm. The |impl|
+// argument is ignored and should be NULL. Authentication tags may be truncated
+// by passing a size as |tag_len|. A |tag_len| of zero indicates the default
+// tag length and this is defined as EVP_AEAD_DEFAULT_TAG_LENGTH for
+// readability.
+//
+// Returns 1 on success. Otherwise returns 0 and pushes to the error stack. In
+// the error case, you do not need to call |EVP_AEAD_CTX_cleanup|, but it's
+// harmless to do so.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                                     const uint8_t *key, size_t key_len,
+                                     size_t tag_len, ENGINE *impl);
+
+// EVP_AEAD_CTX_cleanup frees any data allocated by |ctx|. It is a no-op to
+// call |EVP_AEAD_CTX_cleanup| on a |EVP_AEAD_CTX| that has been |memset| to
+// all zeros.
+OPENSSL_EXPORT void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_seal encrypts and authenticates |in_len| bytes from |in| and
+// authenticates |ad_len| bytes from |ad| and writes the result to |out|. It
+// returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be |in_len| plus the result of
+// |EVP_AEAD_max_overhead|. On successful return, |*out_len| is set to the
+// actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open authenticates |in_len| bytes from |in| and |ad_len| bytes
+// from |ad| and decrypts at most |in_len| bytes into |out|. It returns one on
+// success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |in_len| bytes are written to |out|. In order to ensure success,
+// |max_out_len| should be at least |in_len|. On successful return, |*out_len|
+// is set to the the actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_seal_scatter encrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad|. It writes |in_len| bytes of
+// ciphertext to |out| and the authentication tag to |out_tag|. It returns one
+// on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// Exactly |in_len| bytes are written to |out|, and up to
+// |EVP_AEAD_max_overhead+extra_in_len| bytes to |out_tag|. On successful
+// return, |*out_tag_len| is set to the actual number of bytes written to
+// |out_tag|.
+//
+// |extra_in| may point to an additional plaintext input buffer if the cipher
+// supports it. If present, |extra_in_len| additional bytes of plaintext are
+// encrypted and authenticated, and the ciphertext is written (before the tag)
+// to |out_tag|. |max_out_tag_len| must be sized to allow for the additional
+// |extra_in_len| bytes.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal_scatter| never results in a partial output. If
+// |max_out_tag_len| is insufficient, zero will be returned. If any error
+// occurs, |out| and |out_tag| will be filled with zero bytes and |*out_tag_len|
+// set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|. |out_tag| may not alias
+// any other argument.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out,
+    uint8_t *out_tag, size_t *out_tag_len, size_t max_out_tag_len,
+    const uint8_t *nonce, size_t nonce_len,
+    const uint8_t *in, size_t in_len,
+    const uint8_t *extra_in, size_t extra_in_len,
+    const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open_gather decrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad| using |in_tag_len| bytes of
+// authentication tag from |in_tag|. If successful, it writes |in_len| bytes of
+// plaintext to |out|. It returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open_gather| never results in a partial output. If any error
+// occurs, |out| will be filled with zero bytes.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_aead returns the underlying AEAD for |ctx|, or NULL if one has
+// not been set.
+OPENSSL_EXPORT const EVP_AEAD *EVP_AEAD_CTX_aead(const EVP_AEAD_CTX *ctx);
+
+
+// TLS-specific AEAD algorithms.
+//
+// These AEAD primitives do not meet the definition of generic AEADs. They are
+// all specific to TLS and should not be used outside of that context. They must
+// be initialized with |EVP_AEAD_CTX_init_with_direction|, are stateful, and may
+// not be used concurrently. Any nonces are used as IVs, so they must be
+// unpredictable. They only accept an |ad| parameter of length 11 (the standard
+// TLS one with length omitted).
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha256_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha256_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha384_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_null_sha1_tls(void);
+
+// EVP_aead_aes_128_gcm_tls12 is AES-128 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls12(void);
+
+// EVP_aead_aes_256_gcm_tls12 is AES-256 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls12(void);
+
+// EVP_aead_aes_128_gcm_tls13 is AES-128 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls13(void);
+
+// EVP_aead_aes_256_gcm_tls13 is AES-256 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls13(void);
+
+
+// Obscure functions.
+
+// evp_aead_direction_t denotes the direction of an AEAD operation.
+enum evp_aead_direction_t {
+  evp_aead_open,
+  evp_aead_seal,
+};
+
+// EVP_AEAD_CTX_init_with_direction calls |EVP_AEAD_CTX_init| for normal
+// AEADs. For TLS-specific and SSL3-specific AEADs, it initializes |ctx| for a
+// given direction.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init_with_direction(
+    EVP_AEAD_CTX *ctx, const EVP_AEAD *aead, const uint8_t *key, size_t key_len,
+    size_t tag_len, enum evp_aead_direction_t dir);
+
+// EVP_AEAD_CTX_get_iv sets |*out_len| to the length of the IV for |ctx| and
+// sets |*out_iv| to point to that many bytes of the current IV. This is only
+// meaningful for AEADs with implicit IVs (i.e. CBC mode in TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_AEAD_CTX_get_iv(const EVP_AEAD_CTX *ctx,
+                                       const uint8_t **out_iv, size_t *out_len);
+
+// EVP_AEAD_CTX_tag_len computes the exact byte length of the tag written by
+// |EVP_AEAD_CTX_seal_scatter| and writes it to |*out_tag_len|. It returns one
+// on success or zero on error. |in_len| and |extra_in_len| must equal the
+// arguments of the same names passed to |EVP_AEAD_CTX_seal_scatter|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_tag_len(const EVP_AEAD_CTX *ctx,
+                                        size_t *out_tag_len,
+                                        const size_t in_len,
+                                        const size_t extra_in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedEVP_AEAD_CTX =
+    internal::StackAllocated<EVP_AEAD_CTX, void, EVP_AEAD_CTX_zero,
+                             EVP_AEAD_CTX_cleanup>;
+
+BORINGSSL_MAKE_DELETER(EVP_AEAD_CTX, EVP_AEAD_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_AEAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.back
new file mode 100644
index 0000000..6d78db2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.back	
@@ -0,0 +1,459 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_AEAD_H
+#define OPENSSL_HEADER_AEAD_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Authenticated Encryption with Additional Data.
+//
+// AEAD couples confidentiality and integrity in a single primitive. AEAD
+// algorithms take a key and then can seal and open individual messages. Each
+// message has a unique, per-message nonce and, optionally, additional data
+// which is authenticated but not included in the ciphertext.
+//
+// The |EVP_AEAD_CTX_init| function initialises an |EVP_AEAD_CTX| structure and
+// performs any precomputation needed to use |aead| with |key|. The length of
+// the key, |key_len|, is given in bytes.
+//
+// The |tag_len| argument contains the length of the tags, in bytes, and allows
+// for the processing of truncated authenticators. A zero value indicates that
+// the default tag length should be used and this is defined as
+// |EVP_AEAD_DEFAULT_TAG_LENGTH| in order to make the code clear. Using
+// truncated tags increases an attacker's chance of creating a valid forgery.
+// Be aware that the attacker's chance may increase more than exponentially as
+// would naively be expected.
+//
+// When no longer needed, the initialised |EVP_AEAD_CTX| structure must be
+// passed to |EVP_AEAD_CTX_cleanup|, which will deallocate any memory used.
+//
+// With an |EVP_AEAD_CTX| in hand, one can seal and open messages. These
+// operations are intended to meet the standard notions of privacy and
+// authenticity for authenticated encryption. For formal definitions see
+// Bellare and Namprempre, "Authenticated encryption: relations among notions
+// and analysis of the generic composition paradigm," Lecture Notes in Computer
+// Science B<1976> (2000), 531–545,
+// http://www-cse.ucsd.edu/~mihir/papers/oem.html.
+//
+// When sealing messages, a nonce must be given. The length of the nonce is
+// fixed by the AEAD in use and is returned by |EVP_AEAD_nonce_length|. *The
+// nonce must be unique for all messages with the same key*. This is critically
+// important - nonce reuse may completely undermine the security of the AEAD.
+// Nonces may be predictable and public, so long as they are unique. Uniqueness
+// may be achieved with a simple counter or, if large enough, may be generated
+// randomly. The nonce must be passed into the "open" operation by the receiver
+// so must either be implicit (e.g. a counter), or must be transmitted along
+// with the sealed message.
+//
+// The "seal" and "open" operations are atomic - an entire message must be
+// encrypted or decrypted in a single call. Large messages may have to be split
+// up in order to accommodate this. When doing so, be mindful of the need not to
+// repeat nonces and the possibility that an attacker could duplicate, reorder
+// or drop message chunks. For example, using a single key for a given (large)
+// message and sealing chunks with nonces counting from zero would be secure as
+// long as the number of chunks was securely transmitted. (Otherwise an
+// attacker could truncate the message by dropping chunks from the end.)
+//
+// The number of chunks could be transmitted by prefixing it to the plaintext,
+// for example. This also assumes that no other message would ever use the same
+// key otherwise the rule that nonces must be unique for a given key would be
+// violated.
+//
+// The "seal" and "open" operations also permit additional data to be
+// authenticated via the |ad| parameter. This data is not included in the
+// ciphertext and must be identical for both the "seal" and "open" call. This
+// permits implicit context to be authenticated but may be empty if not needed.
+//
+// The "seal" and "open" operations may work in-place if the |out| and |in|
+// arguments are equal. Otherwise, if |out| and |in| alias, input data may be
+// overwritten before it is read. This situation will cause an error.
+//
+// The "seal" and "open" operations return one on success and zero on error.
+
+
+// AEAD algorithms.
+
+// EVP_aead_aes_128_gcm is AES-128 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm(void);
+
+// EVP_aead_aes_192_gcm is AES-192 in Galois Counter Mode.
+//
+// WARNING: AES-192 is superfluous and shouldn't exist. NIST should never have
+// defined it. Use only when interop with another system requires it, never
+// de novo.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_192_gcm(void);
+
+// EVP_aead_aes_256_gcm is AES-256 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm(void);
+
+// EVP_aead_chacha20_poly1305 is the AEAD built from ChaCha20 and
+// Poly1305 as described in RFC 7539.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
+
+// EVP_aead_xchacha20_poly1305 is ChaCha20-Poly1305 with an extended nonce that
+// makes random generation of nonces safe.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
+
+// EVP_aead_aes_128_ctr_hmac_sha256 is AES-128 in CTR mode with HMAC-SHA256 for
+// authentication. The nonce is 12 bytes; the bottom 32-bits are used as the
+// block counter, thus the maximum plaintext size is 64GB.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_256_ctr_hmac_sha256 is AES-256 in CTR mode with HMAC-SHA256 for
+// authentication. See |EVP_aead_aes_128_ctr_hmac_sha256| for details.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_128_gcm_siv is AES-128 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void);
+
+// EVP_aead_aes_256_gcm_siv is AES-256 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void);
+
+// EVP_aead_aes_128_ccm_bluetooth is AES-128-CCM with M=4 and L=2 (4-byte tags
+// and 13-byte nonces), as decribed in the Bluetooth Core Specification v5.0,
+// Volume 6, Part E, Section 1.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth(void);
+
+// EVP_aead_aes_128_ccm_bluetooth_8 is AES-128-CCM with M=8 and L=2 (8-byte tags
+// and 13-byte nonces), as used in the Bluetooth Mesh Networking Specification
+// v1.0.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth_8(void);
+
+// EVP_has_aes_hardware returns one if we enable hardware support for fast and
+// constant-time AES-GCM.
+OPENSSL_EXPORT int EVP_has_aes_hardware(void);
+
+
+// Utility functions.
+
+// EVP_AEAD_key_length returns the length, in bytes, of the keys used by
+// |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_nonce_length returns the length, in bytes, of the per-message nonce
+// for |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_overhead returns the maximum number of additional bytes added
+// by the act of sealing data with |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_tag_len returns the maximum tag length when using |aead|. This
+// is the largest value that can be passed as |tag_len| to
+// |EVP_AEAD_CTX_init|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
+
+
+// AEAD operations.
+
+union evp_aead_ctx_st_state {
+  uint8_t opaque[580];
+  uint64_t alignment;
+};
+
+// An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
+// and message-independent IV.
+typedef struct evp_aead_ctx_st {
+  const EVP_AEAD *aead;
+  union evp_aead_ctx_st_state state;
+  // tag_len may contain the actual length of the authentication tag if it is
+  // known at initialization time.
+  uint8_t tag_len;
+} EVP_AEAD_CTX;
+
+// EVP_AEAD_MAX_KEY_LENGTH contains the maximum key length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_KEY_LENGTH 80
+
+// EVP_AEAD_MAX_NONCE_LENGTH contains the maximum nonce length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_NONCE_LENGTH 24
+
+// EVP_AEAD_MAX_OVERHEAD contains the maximum overhead used by any AEAD
+// defined in this header.
+#define EVP_AEAD_MAX_OVERHEAD 64
+
+// EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
+// EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD should
+// be used.
+#define EVP_AEAD_DEFAULT_TAG_LENGTH 0
+
+// EVP_AEAD_CTX_zero sets an uninitialized |ctx| to the zero state. It must be
+// initialized with |EVP_AEAD_CTX_init| before use. It is safe, but not
+// necessary, to call |EVP_AEAD_CTX_cleanup| in this state. This may be used for
+// more uniform cleanup of |EVP_AEAD_CTX|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_zero(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_new allocates an |EVP_AEAD_CTX|, calls |EVP_AEAD_CTX_init| and
+// returns the |EVP_AEAD_CTX|, or NULL on error.
+OPENSSL_EXPORT EVP_AEAD_CTX *EVP_AEAD_CTX_new(const EVP_AEAD *aead,
+                                              const uint8_t *key,
+                                              size_t key_len, size_t tag_len);
+
+// EVP_AEAD_CTX_free calls |EVP_AEAD_CTX_cleanup| and |OPENSSL_free| on
+// |ctx|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_init initializes |ctx| for the given AEAD algorithm. The |impl|
+// argument is ignored and should be NULL. Authentication tags may be truncated
+// by passing a size as |tag_len|. A |tag_len| of zero indicates the default
+// tag length and this is defined as EVP_AEAD_DEFAULT_TAG_LENGTH for
+// readability.
+//
+// Returns 1 on success. Otherwise returns 0 and pushes to the error stack. In
+// the error case, you do not need to call |EVP_AEAD_CTX_cleanup|, but it's
+// harmless to do so.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                                     const uint8_t *key, size_t key_len,
+                                     size_t tag_len, ENGINE *impl);
+
+// EVP_AEAD_CTX_cleanup frees any data allocated by |ctx|. It is a no-op to
+// call |EVP_AEAD_CTX_cleanup| on a |EVP_AEAD_CTX| that has been |memset| to
+// all zeros.
+OPENSSL_EXPORT void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_seal encrypts and authenticates |in_len| bytes from |in| and
+// authenticates |ad_len| bytes from |ad| and writes the result to |out|. It
+// returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be |in_len| plus the result of
+// |EVP_AEAD_max_overhead|. On successful return, |*out_len| is set to the
+// actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open authenticates |in_len| bytes from |in| and |ad_len| bytes
+// from |ad| and decrypts at most |in_len| bytes into |out|. It returns one on
+// success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |in_len| bytes are written to |out|. In order to ensure success,
+// |max_out_len| should be at least |in_len|. On successful return, |*out_len|
+// is set to the the actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_seal_scatter encrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad|. It writes |in_len| bytes of
+// ciphertext to |out| and the authentication tag to |out_tag|. It returns one
+// on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// Exactly |in_len| bytes are written to |out|, and up to
+// |EVP_AEAD_max_overhead+extra_in_len| bytes to |out_tag|. On successful
+// return, |*out_tag_len| is set to the actual number of bytes written to
+// |out_tag|.
+//
+// |extra_in| may point to an additional plaintext input buffer if the cipher
+// supports it. If present, |extra_in_len| additional bytes of plaintext are
+// encrypted and authenticated, and the ciphertext is written (before the tag)
+// to |out_tag|. |max_out_tag_len| must be sized to allow for the additional
+// |extra_in_len| bytes.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal_scatter| never results in a partial output. If
+// |max_out_tag_len| is insufficient, zero will be returned. If any error
+// occurs, |out| and |out_tag| will be filled with zero bytes and |*out_tag_len|
+// set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|. |out_tag| may not alias
+// any other argument.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out,
+    uint8_t *out_tag, size_t *out_tag_len, size_t max_out_tag_len,
+    const uint8_t *nonce, size_t nonce_len,
+    const uint8_t *in, size_t in_len,
+    const uint8_t *extra_in, size_t extra_in_len,
+    const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open_gather decrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad| using |in_tag_len| bytes of
+// authentication tag from |in_tag|. If successful, it writes |in_len| bytes of
+// plaintext to |out|. It returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open_gather| never results in a partial output. If any error
+// occurs, |out| will be filled with zero bytes.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_aead returns the underlying AEAD for |ctx|, or NULL if one has
+// not been set.
+OPENSSL_EXPORT const EVP_AEAD *EVP_AEAD_CTX_aead(const EVP_AEAD_CTX *ctx);
+
+
+// TLS-specific AEAD algorithms.
+//
+// These AEAD primitives do not meet the definition of generic AEADs. They are
+// all specific to TLS and should not be used outside of that context. They must
+// be initialized with |EVP_AEAD_CTX_init_with_direction|, are stateful, and may
+// not be used concurrently. Any nonces are used as IVs, so they must be
+// unpredictable. They only accept an |ad| parameter of length 11 (the standard
+// TLS one with length omitted).
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha256_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha256_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha384_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_null_sha1_tls(void);
+
+// EVP_aead_aes_128_gcm_tls12 is AES-128 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls12(void);
+
+// EVP_aead_aes_256_gcm_tls12 is AES-256 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls12(void);
+
+// EVP_aead_aes_128_gcm_tls13 is AES-128 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls13(void);
+
+// EVP_aead_aes_256_gcm_tls13 is AES-256 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls13(void);
+
+
+// Obscure functions.
+
+// evp_aead_direction_t denotes the direction of an AEAD operation.
+enum evp_aead_direction_t {
+  evp_aead_open,
+  evp_aead_seal,
+};
+
+// EVP_AEAD_CTX_init_with_direction calls |EVP_AEAD_CTX_init| for normal
+// AEADs. For TLS-specific and SSL3-specific AEADs, it initializes |ctx| for a
+// given direction.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init_with_direction(
+    EVP_AEAD_CTX *ctx, const EVP_AEAD *aead, const uint8_t *key, size_t key_len,
+    size_t tag_len, enum evp_aead_direction_t dir);
+
+// EVP_AEAD_CTX_get_iv sets |*out_len| to the length of the IV for |ctx| and
+// sets |*out_iv| to point to that many bytes of the current IV. This is only
+// meaningful for AEADs with implicit IVs (i.e. CBC mode in TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_AEAD_CTX_get_iv(const EVP_AEAD_CTX *ctx,
+                                       const uint8_t **out_iv, size_t *out_len);
+
+// EVP_AEAD_CTX_tag_len computes the exact byte length of the tag written by
+// |EVP_AEAD_CTX_seal_scatter| and writes it to |*out_tag_len|. It returns one
+// on success or zero on error. |in_len| and |extra_in_len| must equal the
+// arguments of the same names passed to |EVP_AEAD_CTX_seal_scatter|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_tag_len(const EVP_AEAD_CTX *ctx,
+                                        size_t *out_tag_len,
+                                        const size_t in_len,
+                                        const size_t extra_in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedEVP_AEAD_CTX =
+    internal::StackAllocated<EVP_AEAD_CTX, void, EVP_AEAD_CTX_zero,
+                             EVP_AEAD_CTX_cleanup>;
+
+BORINGSSL_MAKE_DELETER(EVP_AEAD_CTX, EVP_AEAD_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_AEAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.grpc_back
new file mode 100644
index 0000000..6d78db2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aead.h.grpc_back	
@@ -0,0 +1,459 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_AEAD_H
+#define OPENSSL_HEADER_AEAD_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Authenticated Encryption with Additional Data.
+//
+// AEAD couples confidentiality and integrity in a single primitive. AEAD
+// algorithms take a key and then can seal and open individual messages. Each
+// message has a unique, per-message nonce and, optionally, additional data
+// which is authenticated but not included in the ciphertext.
+//
+// The |EVP_AEAD_CTX_init| function initialises an |EVP_AEAD_CTX| structure and
+// performs any precomputation needed to use |aead| with |key|. The length of
+// the key, |key_len|, is given in bytes.
+//
+// The |tag_len| argument contains the length of the tags, in bytes, and allows
+// for the processing of truncated authenticators. A zero value indicates that
+// the default tag length should be used and this is defined as
+// |EVP_AEAD_DEFAULT_TAG_LENGTH| in order to make the code clear. Using
+// truncated tags increases an attacker's chance of creating a valid forgery.
+// Be aware that the attacker's chance may increase more than exponentially as
+// would naively be expected.
+//
+// When no longer needed, the initialised |EVP_AEAD_CTX| structure must be
+// passed to |EVP_AEAD_CTX_cleanup|, which will deallocate any memory used.
+//
+// With an |EVP_AEAD_CTX| in hand, one can seal and open messages. These
+// operations are intended to meet the standard notions of privacy and
+// authenticity for authenticated encryption. For formal definitions see
+// Bellare and Namprempre, "Authenticated encryption: relations among notions
+// and analysis of the generic composition paradigm," Lecture Notes in Computer
+// Science B<1976> (2000), 531–545,
+// http://www-cse.ucsd.edu/~mihir/papers/oem.html.
+//
+// When sealing messages, a nonce must be given. The length of the nonce is
+// fixed by the AEAD in use and is returned by |EVP_AEAD_nonce_length|. *The
+// nonce must be unique for all messages with the same key*. This is critically
+// important - nonce reuse may completely undermine the security of the AEAD.
+// Nonces may be predictable and public, so long as they are unique. Uniqueness
+// may be achieved with a simple counter or, if large enough, may be generated
+// randomly. The nonce must be passed into the "open" operation by the receiver
+// so must either be implicit (e.g. a counter), or must be transmitted along
+// with the sealed message.
+//
+// The "seal" and "open" operations are atomic - an entire message must be
+// encrypted or decrypted in a single call. Large messages may have to be split
+// up in order to accommodate this. When doing so, be mindful of the need not to
+// repeat nonces and the possibility that an attacker could duplicate, reorder
+// or drop message chunks. For example, using a single key for a given (large)
+// message and sealing chunks with nonces counting from zero would be secure as
+// long as the number of chunks was securely transmitted. (Otherwise an
+// attacker could truncate the message by dropping chunks from the end.)
+//
+// The number of chunks could be transmitted by prefixing it to the plaintext,
+// for example. This also assumes that no other message would ever use the same
+// key otherwise the rule that nonces must be unique for a given key would be
+// violated.
+//
+// The "seal" and "open" operations also permit additional data to be
+// authenticated via the |ad| parameter. This data is not included in the
+// ciphertext and must be identical for both the "seal" and "open" call. This
+// permits implicit context to be authenticated but may be empty if not needed.
+//
+// The "seal" and "open" operations may work in-place if the |out| and |in|
+// arguments are equal. Otherwise, if |out| and |in| alias, input data may be
+// overwritten before it is read. This situation will cause an error.
+//
+// The "seal" and "open" operations return one on success and zero on error.
+
+
+// AEAD algorithms.
+
+// EVP_aead_aes_128_gcm is AES-128 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm(void);
+
+// EVP_aead_aes_192_gcm is AES-192 in Galois Counter Mode.
+//
+// WARNING: AES-192 is superfluous and shouldn't exist. NIST should never have
+// defined it. Use only when interop with another system requires it, never
+// de novo.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_192_gcm(void);
+
+// EVP_aead_aes_256_gcm is AES-256 in Galois Counter Mode.
+//
+// Note: AES-GCM should only be used with 12-byte (96-bit) nonces. Although it
+// is specified to take a variable-length nonce, nonces with other lengths are
+// effectively randomized, which means one must consider collisions. Unless
+// implementing an existing protocol which has already specified incorrect
+// parameters, only use 12-byte nonces.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm(void);
+
+// EVP_aead_chacha20_poly1305 is the AEAD built from ChaCha20 and
+// Poly1305 as described in RFC 7539.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
+
+// EVP_aead_xchacha20_poly1305 is ChaCha20-Poly1305 with an extended nonce that
+// makes random generation of nonces safe.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
+
+// EVP_aead_aes_128_ctr_hmac_sha256 is AES-128 in CTR mode with HMAC-SHA256 for
+// authentication. The nonce is 12 bytes; the bottom 32-bits are used as the
+// block counter, thus the maximum plaintext size is 64GB.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_256_ctr_hmac_sha256 is AES-256 in CTR mode with HMAC-SHA256 for
+// authentication. See |EVP_aead_aes_128_ctr_hmac_sha256| for details.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void);
+
+// EVP_aead_aes_128_gcm_siv is AES-128 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_siv(void);
+
+// EVP_aead_aes_256_gcm_siv is AES-256 in GCM-SIV mode. See
+// https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_siv(void);
+
+// EVP_aead_aes_128_ccm_bluetooth is AES-128-CCM with M=4 and L=2 (4-byte tags
+// and 13-byte nonces), as decribed in the Bluetooth Core Specification v5.0,
+// Volume 6, Part E, Section 1.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth(void);
+
+// EVP_aead_aes_128_ccm_bluetooth_8 is AES-128-CCM with M=8 and L=2 (8-byte tags
+// and 13-byte nonces), as used in the Bluetooth Mesh Networking Specification
+// v1.0.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_ccm_bluetooth_8(void);
+
+// EVP_has_aes_hardware returns one if we enable hardware support for fast and
+// constant-time AES-GCM.
+OPENSSL_EXPORT int EVP_has_aes_hardware(void);
+
+
+// Utility functions.
+
+// EVP_AEAD_key_length returns the length, in bytes, of the keys used by
+// |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_nonce_length returns the length, in bytes, of the per-message nonce
+// for |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_overhead returns the maximum number of additional bytes added
+// by the act of sealing data with |aead|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
+
+// EVP_AEAD_max_tag_len returns the maximum tag length when using |aead|. This
+// is the largest value that can be passed as |tag_len| to
+// |EVP_AEAD_CTX_init|.
+OPENSSL_EXPORT size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
+
+
+// AEAD operations.
+
+union evp_aead_ctx_st_state {
+  uint8_t opaque[580];
+  uint64_t alignment;
+};
+
+// An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
+// and message-independent IV.
+typedef struct evp_aead_ctx_st {
+  const EVP_AEAD *aead;
+  union evp_aead_ctx_st_state state;
+  // tag_len may contain the actual length of the authentication tag if it is
+  // known at initialization time.
+  uint8_t tag_len;
+} EVP_AEAD_CTX;
+
+// EVP_AEAD_MAX_KEY_LENGTH contains the maximum key length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_KEY_LENGTH 80
+
+// EVP_AEAD_MAX_NONCE_LENGTH contains the maximum nonce length used by
+// any AEAD defined in this header.
+#define EVP_AEAD_MAX_NONCE_LENGTH 24
+
+// EVP_AEAD_MAX_OVERHEAD contains the maximum overhead used by any AEAD
+// defined in this header.
+#define EVP_AEAD_MAX_OVERHEAD 64
+
+// EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
+// EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD should
+// be used.
+#define EVP_AEAD_DEFAULT_TAG_LENGTH 0
+
+// EVP_AEAD_CTX_zero sets an uninitialized |ctx| to the zero state. It must be
+// initialized with |EVP_AEAD_CTX_init| before use. It is safe, but not
+// necessary, to call |EVP_AEAD_CTX_cleanup| in this state. This may be used for
+// more uniform cleanup of |EVP_AEAD_CTX|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_zero(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_new allocates an |EVP_AEAD_CTX|, calls |EVP_AEAD_CTX_init| and
+// returns the |EVP_AEAD_CTX|, or NULL on error.
+OPENSSL_EXPORT EVP_AEAD_CTX *EVP_AEAD_CTX_new(const EVP_AEAD *aead,
+                                              const uint8_t *key,
+                                              size_t key_len, size_t tag_len);
+
+// EVP_AEAD_CTX_free calls |EVP_AEAD_CTX_cleanup| and |OPENSSL_free| on
+// |ctx|.
+OPENSSL_EXPORT void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_init initializes |ctx| for the given AEAD algorithm. The |impl|
+// argument is ignored and should be NULL. Authentication tags may be truncated
+// by passing a size as |tag_len|. A |tag_len| of zero indicates the default
+// tag length and this is defined as EVP_AEAD_DEFAULT_TAG_LENGTH for
+// readability.
+//
+// Returns 1 on success. Otherwise returns 0 and pushes to the error stack. In
+// the error case, you do not need to call |EVP_AEAD_CTX_cleanup|, but it's
+// harmless to do so.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
+                                     const uint8_t *key, size_t key_len,
+                                     size_t tag_len, ENGINE *impl);
+
+// EVP_AEAD_CTX_cleanup frees any data allocated by |ctx|. It is a no-op to
+// call |EVP_AEAD_CTX_cleanup| on a |EVP_AEAD_CTX| that has been |memset| to
+// all zeros.
+OPENSSL_EXPORT void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
+
+// EVP_AEAD_CTX_seal encrypts and authenticates |in_len| bytes from |in| and
+// authenticates |ad_len| bytes from |ad| and writes the result to |out|. It
+// returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be |in_len| plus the result of
+// |EVP_AEAD_max_overhead|. On successful return, |*out_len| is set to the
+// actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open authenticates |in_len| bytes from |in| and |ad_len| bytes
+// from |ad| and decrypts at most |in_len| bytes into |out|. It returns one on
+// success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// At most |in_len| bytes are written to |out|. In order to ensure success,
+// |max_out_len| should be at least |in_len|. On successful return, |*out_len|
+// is set to the the actual number of bytes written.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open| never results in a partial output. If |max_out_len| is
+// insufficient, zero will be returned. If any error occurs, |out| will be
+// filled with zero bytes and |*out_len| set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
+                                     size_t *out_len, size_t max_out_len,
+                                     const uint8_t *nonce, size_t nonce_len,
+                                     const uint8_t *in, size_t in_len,
+                                     const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_seal_scatter encrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad|. It writes |in_len| bytes of
+// ciphertext to |out| and the authentication tag to |out_tag|. It returns one
+// on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// Exactly |in_len| bytes are written to |out|, and up to
+// |EVP_AEAD_max_overhead+extra_in_len| bytes to |out_tag|. On successful
+// return, |*out_tag_len| is set to the actual number of bytes written to
+// |out_tag|.
+//
+// |extra_in| may point to an additional plaintext input buffer if the cipher
+// supports it. If present, |extra_in_len| additional bytes of plaintext are
+// encrypted and authenticated, and the ciphertext is written (before the tag)
+// to |out_tag|. |max_out_tag_len| must be sized to allow for the additional
+// |extra_in_len| bytes.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_seal_scatter| never results in a partial output. If
+// |max_out_tag_len| is insufficient, zero will be returned. If any error
+// occurs, |out| and |out_tag| will be filled with zero bytes and |*out_tag_len|
+// set to zero.
+//
+// If |in| and |out| alias then |out| must be == |in|. |out_tag| may not alias
+// any other argument.
+OPENSSL_EXPORT int EVP_AEAD_CTX_seal_scatter(
+    const EVP_AEAD_CTX *ctx, uint8_t *out,
+    uint8_t *out_tag, size_t *out_tag_len, size_t max_out_tag_len,
+    const uint8_t *nonce, size_t nonce_len,
+    const uint8_t *in, size_t in_len,
+    const uint8_t *extra_in, size_t extra_in_len,
+    const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_open_gather decrypts and authenticates |in_len| bytes from |in|
+// and authenticates |ad_len| bytes from |ad| using |in_tag_len| bytes of
+// authentication tag from |in_tag|. If successful, it writes |in_len| bytes of
+// plaintext to |out|. It returns one on success and zero otherwise.
+//
+// This function may be called concurrently with itself or any other seal/open
+// function on the same |EVP_AEAD_CTX|.
+//
+// The length of |nonce|, |nonce_len|, must be equal to the result of
+// |EVP_AEAD_nonce_length| for this AEAD.
+//
+// |EVP_AEAD_CTX_open_gather| never results in a partial output. If any error
+// occurs, |out| will be filled with zero bytes.
+//
+// If |in| and |out| alias then |out| must be == |in|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_open_gather(
+    const EVP_AEAD_CTX *ctx, uint8_t *out, const uint8_t *nonce,
+    size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *in_tag,
+    size_t in_tag_len, const uint8_t *ad, size_t ad_len);
+
+// EVP_AEAD_CTX_aead returns the underlying AEAD for |ctx|, or NULL if one has
+// not been set.
+OPENSSL_EXPORT const EVP_AEAD *EVP_AEAD_CTX_aead(const EVP_AEAD_CTX *ctx);
+
+
+// TLS-specific AEAD algorithms.
+//
+// These AEAD primitives do not meet the definition of generic AEADs. They are
+// all specific to TLS and should not be used outside of that context. They must
+// be initialized with |EVP_AEAD_CTX_init_with_direction|, are stateful, and may
+// not be used concurrently. Any nonces are used as IVs, so they must be
+// unpredictable. They only accept an |ad| parameter of length 11 (the standard
+// TLS one with length omitted).
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_cbc_sha256_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha1_tls_implicit_iv(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha256_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_cbc_sha384_tls(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls(void);
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv(void);
+
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_null_sha1_tls(void);
+
+// EVP_aead_aes_128_gcm_tls12 is AES-128 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls12(void);
+
+// EVP_aead_aes_256_gcm_tls12 is AES-256 in Galois Counter Mode using the TLS
+// 1.2 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls12(void);
+
+// EVP_aead_aes_128_gcm_tls13 is AES-128 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_128_gcm_tls13(void);
+
+// EVP_aead_aes_256_gcm_tls13 is AES-256 in Galois Counter Mode using the TLS
+// 1.3 nonce construction.
+OPENSSL_EXPORT const EVP_AEAD *EVP_aead_aes_256_gcm_tls13(void);
+
+
+// Obscure functions.
+
+// evp_aead_direction_t denotes the direction of an AEAD operation.
+enum evp_aead_direction_t {
+  evp_aead_open,
+  evp_aead_seal,
+};
+
+// EVP_AEAD_CTX_init_with_direction calls |EVP_AEAD_CTX_init| for normal
+// AEADs. For TLS-specific and SSL3-specific AEADs, it initializes |ctx| for a
+// given direction.
+OPENSSL_EXPORT int EVP_AEAD_CTX_init_with_direction(
+    EVP_AEAD_CTX *ctx, const EVP_AEAD *aead, const uint8_t *key, size_t key_len,
+    size_t tag_len, enum evp_aead_direction_t dir);
+
+// EVP_AEAD_CTX_get_iv sets |*out_len| to the length of the IV for |ctx| and
+// sets |*out_iv| to point to that many bytes of the current IV. This is only
+// meaningful for AEADs with implicit IVs (i.e. CBC mode in TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_AEAD_CTX_get_iv(const EVP_AEAD_CTX *ctx,
+                                       const uint8_t **out_iv, size_t *out_len);
+
+// EVP_AEAD_CTX_tag_len computes the exact byte length of the tag written by
+// |EVP_AEAD_CTX_seal_scatter| and writes it to |*out_tag_len|. It returns one
+// on success or zero on error. |in_len| and |extra_in_len| must equal the
+// arguments of the same names passed to |EVP_AEAD_CTX_seal_scatter|.
+OPENSSL_EXPORT int EVP_AEAD_CTX_tag_len(const EVP_AEAD_CTX *ctx,
+                                        size_t *out_tag_len,
+                                        const size_t in_len,
+                                        const size_t extra_in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedEVP_AEAD_CTX =
+    internal::StackAllocated<EVP_AEAD_CTX, void, EVP_AEAD_CTX_zero,
+                             EVP_AEAD_CTX_cleanup>;
+
+BORINGSSL_MAKE_DELETER(EVP_AEAD_CTX, EVP_AEAD_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_AEAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h
new file mode 100644
index 0000000..dcfc17c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h	
@@ -0,0 +1,195 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#ifndef OPENSSL_HEADER_AES_H
+#define OPENSSL_HEADER_AES_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Raw AES functions.
+
+
+#define AES_ENCRYPT 1
+#define AES_DECRYPT 0
+
+// AES_MAXNR is the maximum number of AES rounds.
+#define AES_MAXNR 14
+
+#define AES_BLOCK_SIZE 16
+
+// aes_key_st should be an opaque type, but EVP requires that the size be
+// known.
+struct aes_key_st {
+  uint32_t rd_key[4 * (AES_MAXNR + 1)];
+  unsigned rounds;
+};
+typedef struct aes_key_st AES_KEY;
+
+// AES_set_encrypt_key configures |aeskey| to encrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_encrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_set_decrypt_key configures |aeskey| to decrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_decrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_encrypt encrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_encrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+// AES_decrypt decrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_decrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+
+// Block cipher modes.
+
+// AES_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call and |ivec| will be incremented.
+OPENSSL_EXPORT void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t ivec[AES_BLOCK_SIZE],
+                                       uint8_t ecount_buf[AES_BLOCK_SIZE],
+                                       unsigned int *num);
+
+// AES_ecb_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) a single,
+// 16 byte block from |in| to |out|.
+OPENSSL_EXPORT void AES_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                    const AES_KEY *key, const int enc);
+
+// AES_cbc_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The length must be a multiple of the block size.
+OPENSSL_EXPORT void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                                    const AES_KEY *key, uint8_t *ivec,
+                                    const int enc);
+
+// AES_ofb128_encrypt encrypts (or decrypts, it's the same in OFB mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num);
+
+// AES_cfb128_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num, int enc);
+
+
+// AES key wrap.
+//
+// These functions implement AES Key Wrap mode, as defined in RFC 3394. They
+// should never be used except to interoperate with existing systems that use
+// this mode.
+
+// AES_wrap_key performs AES key wrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for encryption. On success, it writes
+// |in_len| + 8 bytes to |out| and returns |in_len| + 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_wrap_key(const AES_KEY *key, const uint8_t *iv,
+                                uint8_t *out, const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key performs AES key unwrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for decryption. On success, it writes
+// |in_len| - 8 bytes to |out| and returns |in_len| - 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv,
+                                  uint8_t *out, const uint8_t *in,
+                                  size_t in_len);
+
+
+// AES key wrap with padding.
+//
+// These functions implement AES Key Wrap with Padding mode, as defined in RFC
+// 5649. They should never be used except to interoperate with existing systems
+// that use this mode.
+
+// AES_wrap_key_padded performs a padded AES key wrap on |in| which must be
+// between 1 and 2^32-1 bytes. |key| must have been configured for encryption.
+// On success it writes at most |max_out| bytes of ciphertext to |out|, sets
+// |*out_len| to the number of bytes written, and returns one. On failure it
+// returns zero. To ensure success, set |max_out| to at least |in_len| + 15.
+OPENSSL_EXPORT int AES_wrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                       size_t *out_len, size_t max_out,
+                                       const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key_padded performs a padded AES key unwrap on |in| which must be
+// a multiple of 8 bytes. |key| must have been configured for decryption. On
+// success it writes at most |max_out| bytes to |out|, sets |*out_len| to the
+// number of bytes written, and returns one. On failure it returns zero. Setting
+// |max_out| to |in_len| is a sensible estimate.
+OPENSSL_EXPORT int AES_unwrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                         size_t *out_len, size_t max_out,
+                                         const uint8_t *in, size_t in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_AES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.back
new file mode 100644
index 0000000..e560625
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.back	
@@ -0,0 +1,195 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#ifndef OPENSSL_HEADER_AES_H
+#define OPENSSL_HEADER_AES_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Raw AES functions.
+
+
+#define AES_ENCRYPT 1
+#define AES_DECRYPT 0
+
+// AES_MAXNR is the maximum number of AES rounds.
+#define AES_MAXNR 14
+
+#define AES_BLOCK_SIZE 16
+
+// aes_key_st should be an opaque type, but EVP requires that the size be
+// known.
+struct aes_key_st {
+  uint32_t rd_key[4 * (AES_MAXNR + 1)];
+  unsigned rounds;
+};
+typedef struct aes_key_st AES_KEY;
+
+// AES_set_encrypt_key configures |aeskey| to encrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_encrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_set_decrypt_key configures |aeskey| to decrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_decrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_encrypt encrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_encrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+// AES_decrypt decrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_decrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+
+// Block cipher modes.
+
+// AES_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call and |ivec| will be incremented.
+OPENSSL_EXPORT void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t ivec[AES_BLOCK_SIZE],
+                                       uint8_t ecount_buf[AES_BLOCK_SIZE],
+                                       unsigned int *num);
+
+// AES_ecb_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) a single,
+// 16 byte block from |in| to |out|.
+OPENSSL_EXPORT void AES_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                    const AES_KEY *key, const int enc);
+
+// AES_cbc_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The length must be a multiple of the block size.
+OPENSSL_EXPORT void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                                    const AES_KEY *key, uint8_t *ivec,
+                                    const int enc);
+
+// AES_ofb128_encrypt encrypts (or decrypts, it's the same in OFB mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num);
+
+// AES_cfb128_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num, int enc);
+
+
+// AES key wrap.
+//
+// These functions implement AES Key Wrap mode, as defined in RFC 3394. They
+// should never be used except to interoperate with existing systems that use
+// this mode.
+
+// AES_wrap_key performs AES key wrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for encryption. On success, it writes
+// |in_len| + 8 bytes to |out| and returns |in_len| + 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_wrap_key(const AES_KEY *key, const uint8_t *iv,
+                                uint8_t *out, const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key performs AES key unwrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for decryption. On success, it writes
+// |in_len| - 8 bytes to |out| and returns |in_len| - 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv,
+                                  uint8_t *out, const uint8_t *in,
+                                  size_t in_len);
+
+
+// AES key wrap with padding.
+//
+// These functions implement AES Key Wrap with Padding mode, as defined in RFC
+// 5649. They should never be used except to interoperate with existing systems
+// that use this mode.
+
+// AES_wrap_key_padded performs a padded AES key wrap on |in| which must be
+// between 1 and 2^32-1 bytes. |key| must have been configured for encryption.
+// On success it writes at most |max_out| bytes of ciphertext to |out|, sets
+// |*out_len| to the number of bytes written, and returns one. On failure it
+// returns zero. To ensure success, set |max_out| to at least |in_len| + 15.
+OPENSSL_EXPORT int AES_wrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                       size_t *out_len, size_t max_out,
+                                       const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key_padded performs a padded AES key unwrap on |in| which must be
+// a multiple of 8 bytes. |key| must have been configured for decryption. On
+// success it writes at most |max_out| bytes to |out|, sets |*out_len| to the
+// number of bytes written, and returns one. On failure it returns zero. Setting
+// |max_out| to |in_len| is a sensible estimate.
+OPENSSL_EXPORT int AES_unwrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                         size_t *out_len, size_t max_out,
+                                         const uint8_t *in, size_t in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_AES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.grpc_back
new file mode 100644
index 0000000..e560625
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/aes.h.grpc_back	
@@ -0,0 +1,195 @@
+/* ====================================================================
+ * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ==================================================================== */
+
+#ifndef OPENSSL_HEADER_AES_H
+#define OPENSSL_HEADER_AES_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Raw AES functions.
+
+
+#define AES_ENCRYPT 1
+#define AES_DECRYPT 0
+
+// AES_MAXNR is the maximum number of AES rounds.
+#define AES_MAXNR 14
+
+#define AES_BLOCK_SIZE 16
+
+// aes_key_st should be an opaque type, but EVP requires that the size be
+// known.
+struct aes_key_st {
+  uint32_t rd_key[4 * (AES_MAXNR + 1)];
+  unsigned rounds;
+};
+typedef struct aes_key_st AES_KEY;
+
+// AES_set_encrypt_key configures |aeskey| to encrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_encrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_set_decrypt_key configures |aeskey| to decrypt with the |bits|-bit key,
+// |key|. |key| must point to |bits|/8 bytes. It returns zero on success and a
+// negative number if |bits| is an invalid AES key size.
+//
+// WARNING: this function breaks the usual return value convention.
+OPENSSL_EXPORT int AES_set_decrypt_key(const uint8_t *key, unsigned bits,
+                                       AES_KEY *aeskey);
+
+// AES_encrypt encrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_encrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+// AES_decrypt decrypts a single block from |in| to |out| with |key|. The |in|
+// and |out| pointers may overlap.
+OPENSSL_EXPORT void AES_decrypt(const uint8_t *in, uint8_t *out,
+                                const AES_KEY *key);
+
+
+// Block cipher modes.
+
+// AES_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call and |ivec| will be incremented.
+OPENSSL_EXPORT void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t ivec[AES_BLOCK_SIZE],
+                                       uint8_t ecount_buf[AES_BLOCK_SIZE],
+                                       unsigned int *num);
+
+// AES_ecb_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) a single,
+// 16 byte block from |in| to |out|.
+OPENSSL_EXPORT void AES_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                    const AES_KEY *key, const int enc);
+
+// AES_cbc_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The length must be a multiple of the block size.
+OPENSSL_EXPORT void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                                    const AES_KEY *key, uint8_t *ivec,
+                                    const int enc);
+
+// AES_ofb128_encrypt encrypts (or decrypts, it's the same in OFB mode) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num);
+
+// AES_cfb128_encrypt encrypts (or decrypts, if |enc| == |AES_DECRYPT|) |len|
+// bytes from |in| to |out|. The |num| parameter must be set to zero on the
+// first call.
+OPENSSL_EXPORT void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t len, const AES_KEY *key,
+                                       uint8_t *ivec, int *num, int enc);
+
+
+// AES key wrap.
+//
+// These functions implement AES Key Wrap mode, as defined in RFC 3394. They
+// should never be used except to interoperate with existing systems that use
+// this mode.
+
+// AES_wrap_key performs AES key wrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for encryption. On success, it writes
+// |in_len| + 8 bytes to |out| and returns |in_len| + 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_wrap_key(const AES_KEY *key, const uint8_t *iv,
+                                uint8_t *out, const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key performs AES key unwrap on |in| which must be a multiple of 8
+// bytes. |iv| must point to an 8 byte value or be NULL to use the default IV.
+// |key| must have been configured for decryption. On success, it writes
+// |in_len| - 8 bytes to |out| and returns |in_len| - 8. Otherwise, it returns
+// -1.
+OPENSSL_EXPORT int AES_unwrap_key(const AES_KEY *key, const uint8_t *iv,
+                                  uint8_t *out, const uint8_t *in,
+                                  size_t in_len);
+
+
+// AES key wrap with padding.
+//
+// These functions implement AES Key Wrap with Padding mode, as defined in RFC
+// 5649. They should never be used except to interoperate with existing systems
+// that use this mode.
+
+// AES_wrap_key_padded performs a padded AES key wrap on |in| which must be
+// between 1 and 2^32-1 bytes. |key| must have been configured for encryption.
+// On success it writes at most |max_out| bytes of ciphertext to |out|, sets
+// |*out_len| to the number of bytes written, and returns one. On failure it
+// returns zero. To ensure success, set |max_out| to at least |in_len| + 15.
+OPENSSL_EXPORT int AES_wrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                       size_t *out_len, size_t max_out,
+                                       const uint8_t *in, size_t in_len);
+
+// AES_unwrap_key_padded performs a padded AES key unwrap on |in| which must be
+// a multiple of 8 bytes. |key| must have been configured for decryption. On
+// success it writes at most |max_out| bytes to |out|, sets |*out_len| to the
+// number of bytes written, and returns one. On failure it returns zero. Setting
+// |max_out| to |in_len| is a sensible estimate.
+OPENSSL_EXPORT int AES_unwrap_key_padded(const AES_KEY *key, uint8_t *out,
+                                         size_t *out_len, size_t max_out,
+                                         const uint8_t *in, size_t in_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_AES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h
new file mode 100644
index 0000000..faa2655
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h	
@@ -0,0 +1,121 @@
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ARM_ARCH_H
+#define OPENSSL_HEADER_ARM_ARCH_H
+
+#if !defined(__ARM_ARCH__)
+# if defined(__CC_ARM)
+#  define __ARM_ARCH__ __TARGET_ARCH_ARM
+#  if defined(__BIG_ENDIAN)
+#   define __ARMEB__
+#  else
+#   define __ARMEL__
+#  endif
+# elif defined(__GNUC__)
+#  if defined(__aarch64__)
+#    define __ARM_ARCH__ 8
+#    if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#      define __ARMEB__
+#    else
+#      define __ARMEL__
+#    endif
+  // Why doesn't gcc define __ARM_ARCH__? Instead it defines
+  // bunch of below macros. See all_architectires[] table in
+  // gcc/config/arm/arm.c. On a side note it defines
+  // __ARMEL__/__ARMEB__ for little-/big-endian.
+#  elif	defined(__ARM_ARCH)
+#    define __ARM_ARCH__ __ARM_ARCH
+#  elif	defined(__ARM_ARCH_8A__)
+#    define __ARM_ARCH__ 8
+#  elif	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
+	defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)	|| \
+	defined(__ARM_ARCH_7EM__)
+#   define __ARM_ARCH__ 7
+#  elif	defined(__ARM_ARCH_6__)	|| defined(__ARM_ARCH_6J__)	|| \
+	defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__)	|| \
+	defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__)	|| \
+	defined(__ARM_ARCH_6T2__)
+#   define __ARM_ARCH__ 6
+#  elif	defined(__ARM_ARCH_5__)	|| defined(__ARM_ARCH_5T__)	|| \
+	defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__)	|| \
+	defined(__ARM_ARCH_5TEJ__)
+#   define __ARM_ARCH__ 5
+#  elif	defined(__ARM_ARCH_4__)	|| defined(__ARM_ARCH_4T__)
+#   define __ARM_ARCH__ 4
+#  else
+#   error "unsupported ARM architecture"
+#  endif
+# endif
+#endif
+
+// Even when building for 32-bit ARM, support for aarch64 crypto instructions
+// will be included.
+#define __ARM_MAX_ARCH__ 8
+
+// ARMV7_NEON is true when a NEON unit is present in the current CPU.
+#define ARMV7_NEON (1 << 0)
+
+// ARMV8_AES indicates support for hardware AES instructions.
+#define ARMV8_AES (1 << 2)
+
+// ARMV8_SHA1 indicates support for hardware SHA-1 instructions.
+#define ARMV8_SHA1 (1 << 3)
+
+// ARMV8_SHA256 indicates support for hardware SHA-256 instructions.
+#define ARMV8_SHA256 (1 << 4)
+
+// ARMV8_PMULL indicates support for carryless multiplication.
+#define ARMV8_PMULL (1 << 5)
+
+
+#endif  // OPENSSL_HEADER_ARM_ARCH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.back
new file mode 100644
index 0000000..faa2655
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.back	
@@ -0,0 +1,121 @@
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ARM_ARCH_H
+#define OPENSSL_HEADER_ARM_ARCH_H
+
+#if !defined(__ARM_ARCH__)
+# if defined(__CC_ARM)
+#  define __ARM_ARCH__ __TARGET_ARCH_ARM
+#  if defined(__BIG_ENDIAN)
+#   define __ARMEB__
+#  else
+#   define __ARMEL__
+#  endif
+# elif defined(__GNUC__)
+#  if defined(__aarch64__)
+#    define __ARM_ARCH__ 8
+#    if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#      define __ARMEB__
+#    else
+#      define __ARMEL__
+#    endif
+  // Why doesn't gcc define __ARM_ARCH__? Instead it defines
+  // bunch of below macros. See all_architectires[] table in
+  // gcc/config/arm/arm.c. On a side note it defines
+  // __ARMEL__/__ARMEB__ for little-/big-endian.
+#  elif	defined(__ARM_ARCH)
+#    define __ARM_ARCH__ __ARM_ARCH
+#  elif	defined(__ARM_ARCH_8A__)
+#    define __ARM_ARCH__ 8
+#  elif	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
+	defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)	|| \
+	defined(__ARM_ARCH_7EM__)
+#   define __ARM_ARCH__ 7
+#  elif	defined(__ARM_ARCH_6__)	|| defined(__ARM_ARCH_6J__)	|| \
+	defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__)	|| \
+	defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__)	|| \
+	defined(__ARM_ARCH_6T2__)
+#   define __ARM_ARCH__ 6
+#  elif	defined(__ARM_ARCH_5__)	|| defined(__ARM_ARCH_5T__)	|| \
+	defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__)	|| \
+	defined(__ARM_ARCH_5TEJ__)
+#   define __ARM_ARCH__ 5
+#  elif	defined(__ARM_ARCH_4__)	|| defined(__ARM_ARCH_4T__)
+#   define __ARM_ARCH__ 4
+#  else
+#   error "unsupported ARM architecture"
+#  endif
+# endif
+#endif
+
+// Even when building for 32-bit ARM, support for aarch64 crypto instructions
+// will be included.
+#define __ARM_MAX_ARCH__ 8
+
+// ARMV7_NEON is true when a NEON unit is present in the current CPU.
+#define ARMV7_NEON (1 << 0)
+
+// ARMV8_AES indicates support for hardware AES instructions.
+#define ARMV8_AES (1 << 2)
+
+// ARMV8_SHA1 indicates support for hardware SHA-1 instructions.
+#define ARMV8_SHA1 (1 << 3)
+
+// ARMV8_SHA256 indicates support for hardware SHA-256 instructions.
+#define ARMV8_SHA256 (1 << 4)
+
+// ARMV8_PMULL indicates support for carryless multiplication.
+#define ARMV8_PMULL (1 << 5)
+
+
+#endif  // OPENSSL_HEADER_ARM_ARCH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.grpc_back
new file mode 100644
index 0000000..faa2655
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/arm_arch.h.grpc_back	
@@ -0,0 +1,121 @@
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ARM_ARCH_H
+#define OPENSSL_HEADER_ARM_ARCH_H
+
+#if !defined(__ARM_ARCH__)
+# if defined(__CC_ARM)
+#  define __ARM_ARCH__ __TARGET_ARCH_ARM
+#  if defined(__BIG_ENDIAN)
+#   define __ARMEB__
+#  else
+#   define __ARMEL__
+#  endif
+# elif defined(__GNUC__)
+#  if defined(__aarch64__)
+#    define __ARM_ARCH__ 8
+#    if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#      define __ARMEB__
+#    else
+#      define __ARMEL__
+#    endif
+  // Why doesn't gcc define __ARM_ARCH__? Instead it defines
+  // bunch of below macros. See all_architectires[] table in
+  // gcc/config/arm/arm.c. On a side note it defines
+  // __ARMEL__/__ARMEB__ for little-/big-endian.
+#  elif	defined(__ARM_ARCH)
+#    define __ARM_ARCH__ __ARM_ARCH
+#  elif	defined(__ARM_ARCH_8A__)
+#    define __ARM_ARCH__ 8
+#  elif	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
+	defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)	|| \
+	defined(__ARM_ARCH_7EM__)
+#   define __ARM_ARCH__ 7
+#  elif	defined(__ARM_ARCH_6__)	|| defined(__ARM_ARCH_6J__)	|| \
+	defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__)	|| \
+	defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__)	|| \
+	defined(__ARM_ARCH_6T2__)
+#   define __ARM_ARCH__ 6
+#  elif	defined(__ARM_ARCH_5__)	|| defined(__ARM_ARCH_5T__)	|| \
+	defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__)	|| \
+	defined(__ARM_ARCH_5TEJ__)
+#   define __ARM_ARCH__ 5
+#  elif	defined(__ARM_ARCH_4__)	|| defined(__ARM_ARCH_4T__)
+#   define __ARM_ARCH__ 4
+#  else
+#   error "unsupported ARM architecture"
+#  endif
+# endif
+#endif
+
+// Even when building for 32-bit ARM, support for aarch64 crypto instructions
+// will be included.
+#define __ARM_MAX_ARCH__ 8
+
+// ARMV7_NEON is true when a NEON unit is present in the current CPU.
+#define ARMV7_NEON (1 << 0)
+
+// ARMV8_AES indicates support for hardware AES instructions.
+#define ARMV8_AES (1 << 2)
+
+// ARMV8_SHA1 indicates support for hardware SHA-1 instructions.
+#define ARMV8_SHA1 (1 << 3)
+
+// ARMV8_SHA256 indicates support for hardware SHA-256 instructions.
+#define ARMV8_SHA256 (1 << 4)
+
+// ARMV8_PMULL indicates support for carryless multiplication.
+#define ARMV8_PMULL (1 << 5)
+
+
+#endif  // OPENSSL_HEADER_ARM_ARCH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h
new file mode 100644
index 0000000..4e2630f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h	
@@ -0,0 +1,911 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_ASN1_H
+#define HEADER_ASN1_H
+
+#include <openssl_grpc/base.h>
+
+#include <time.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/stack.h>
+
+#include <openssl_grpc/bn.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library.
+ *
+ * This header is part of OpenSSL's ASN.1 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. Use
+ * the new |CBS| and |CBB| library in <openssl/bytestring.h> instead. */
+
+
+#define V_ASN1_UNIVERSAL		0x00
+#define	V_ASN1_APPLICATION		0x40
+#define V_ASN1_CONTEXT_SPECIFIC		0x80
+#define V_ASN1_PRIVATE			0xc0
+
+#define V_ASN1_CONSTRUCTED		0x20
+#define V_ASN1_PRIMITIVE_TAG		0x1f
+
+#define V_ASN1_APP_CHOOSE		-2	/* let the recipient choose */
+#define V_ASN1_OTHER			-3	/* used in ASN1_TYPE */
+#define V_ASN1_ANY			-4	/* used in ASN1 template code */
+
+#define V_ASN1_NEG			0x100	/* negative flag */
+/* No supported universal tags may exceed this value, to avoid ambiguity with
+ * V_ASN1_NEG. */
+#define V_ASN1_MAX_UNIVERSAL		0xff
+
+#define V_ASN1_UNDEF			-1
+#define V_ASN1_EOC			0
+#define V_ASN1_BOOLEAN			1	/**/
+#define V_ASN1_INTEGER			2
+#define V_ASN1_NEG_INTEGER		(2 | V_ASN1_NEG)
+#define V_ASN1_BIT_STRING		3
+#define V_ASN1_OCTET_STRING		4
+#define V_ASN1_NULL			5
+#define V_ASN1_OBJECT			6
+#define V_ASN1_OBJECT_DESCRIPTOR	7
+#define V_ASN1_EXTERNAL			8
+#define V_ASN1_REAL			9
+#define V_ASN1_ENUMERATED		10
+#define V_ASN1_NEG_ENUMERATED		(10 | V_ASN1_NEG)
+#define V_ASN1_UTF8STRING		12
+#define V_ASN1_SEQUENCE			16
+#define V_ASN1_SET			17
+#define V_ASN1_NUMERICSTRING		18	/**/
+#define V_ASN1_PRINTABLESTRING		19
+#define V_ASN1_T61STRING		20
+#define V_ASN1_TELETEXSTRING		20	/* alias */
+#define V_ASN1_VIDEOTEXSTRING		21	/**/
+#define V_ASN1_IA5STRING		22
+#define V_ASN1_UTCTIME			23
+#define V_ASN1_GENERALIZEDTIME		24	/**/
+#define V_ASN1_GRAPHICSTRING		25	/**/
+#define V_ASN1_ISO64STRING		26	/**/
+#define V_ASN1_VISIBLESTRING		26	/* alias */
+#define V_ASN1_GENERALSTRING		27	/**/
+#define V_ASN1_UNIVERSALSTRING		28	/**/
+#define V_ASN1_BMPSTRING		30
+
+/* For use with d2i_ASN1_type_bytes() */
+#define B_ASN1_NUMERICSTRING	0x0001
+#define B_ASN1_PRINTABLESTRING	0x0002
+#define B_ASN1_T61STRING	0x0004
+#define B_ASN1_TELETEXSTRING	0x0004
+#define B_ASN1_VIDEOTEXSTRING	0x0008
+#define B_ASN1_IA5STRING	0x0010
+#define B_ASN1_GRAPHICSTRING	0x0020
+#define B_ASN1_ISO64STRING	0x0040
+#define B_ASN1_VISIBLESTRING	0x0040
+#define B_ASN1_GENERALSTRING	0x0080
+#define B_ASN1_UNIVERSALSTRING	0x0100
+#define B_ASN1_OCTET_STRING	0x0200
+#define B_ASN1_BIT_STRING	0x0400
+#define B_ASN1_BMPSTRING	0x0800
+#define B_ASN1_UNKNOWN		0x1000
+#define B_ASN1_UTF8STRING	0x2000
+#define B_ASN1_UTCTIME		0x4000
+#define B_ASN1_GENERALIZEDTIME	0x8000
+#define B_ASN1_SEQUENCE		0x10000
+
+/* For use with ASN1_mbstring_copy() */
+#define MBSTRING_FLAG		0x1000
+#define MBSTRING_UTF8		(MBSTRING_FLAG)
+/* |MBSTRING_ASC| refers to Latin-1, not ASCII. It is used with TeletexString
+ * which, in turn, is treated as Latin-1 rather than T.61 by OpenSSL and most
+ * other software. */
+#define MBSTRING_ASC		(MBSTRING_FLAG|1)
+#define MBSTRING_BMP		(MBSTRING_FLAG|2)
+#define MBSTRING_UNIV		(MBSTRING_FLAG|4)
+
+#define DECLARE_ASN1_SET_OF(type) /* filled in by mkstack.pl */
+#define IMPLEMENT_ASN1_SET_OF(type) /* nothing, no longer needed */
+
+/* These are used internally in the ASN1_OBJECT to keep track of
+ * whether the names and data need to be free()ed */
+#define ASN1_OBJECT_FLAG_DYNAMIC	 0x01	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_DATA 	 0x08	/* internal use */
+struct asn1_object_st
+	{
+	const char *sn,*ln;
+	int nid;
+	int length;
+	const unsigned char *data;	/* data remains const after init */
+	int flags;	/* Should we free this one */
+	};
+
+DEFINE_STACK_OF(ASN1_OBJECT)
+
+#define ASN1_STRING_FLAG_BITS_LEFT 0x08 /* Set if 0x07 has bits left value */
+/* This indicates that the ASN1_STRING is not a real value but just a place
+ * holder for the location where indefinite length constructed data should
+ * be inserted in the memory buffer 
+ */
+#define ASN1_STRING_FLAG_NDEF 0x010 
+
+/* This flag is used by ASN1 code to indicate an ASN1_STRING is an MSTRING
+ * type.
+ */
+#define ASN1_STRING_FLAG_MSTRING 0x040 
+/* This is the base type that holds just about everything :-) */
+struct asn1_string_st
+	{
+	int length;
+	int type;
+	unsigned char *data;
+	/* The value of the following field depends on the type being
+	 * held.  It is mostly being used for BIT_STRING so if the
+	 * input data has a non-zero 'unused bits' value, it will be
+	 * handled correctly */
+	long flags;
+	};
+
+/* ASN1_ENCODING structure: this is used to save the received
+ * encoding of an ASN1 type. This is useful to get round
+ * problems with invalid encodings which can break signatures.
+ */
+
+typedef struct ASN1_ENCODING_st
+	{
+	unsigned char *enc;	/* DER encoding */
+	long len;		/* Length of encoding */
+	int modified;		/* set to 1 if 'enc' is invalid */
+	/* alias_only is zero if |enc| owns the buffer that it points to
+	 * (although |enc| may still be NULL). If one, |enc| points into a
+	 * buffer that is owned elsewhere. */
+	unsigned alias_only:1;
+	/* alias_only_on_next_parse is one iff the next parsing operation
+	 * should avoid taking a copy of the input and rather set
+	 * |alias_only|. */
+	unsigned alias_only_on_next_parse:1;
+	} ASN1_ENCODING;
+
+#define STABLE_FLAGS_MALLOC	0x01
+#define STABLE_NO_MASK		0x02
+#define DIRSTRING_TYPE	\
+ (B_ASN1_PRINTABLESTRING|B_ASN1_T61STRING|B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)
+#define PKCS9STRING_TYPE (DIRSTRING_TYPE|B_ASN1_IA5STRING)
+
+typedef struct asn1_string_table_st {
+	int nid;
+	long minsize;
+	long maxsize;
+	unsigned long mask;
+	unsigned long flags;
+} ASN1_STRING_TABLE;
+
+/* size limits: this stuff is taken straight from RFC2459 */
+
+#define ub_name				32768
+#define ub_common_name			64
+#define ub_locality_name		128
+#define ub_state_name			128
+#define ub_organization_name		64
+#define ub_organization_unit_name	64
+#define ub_title			64
+#define ub_email_address		128
+
+/* Declarations for template structures: for full definitions
+ * see asn1t.h
+ */
+typedef struct ASN1_TEMPLATE_st ASN1_TEMPLATE;
+typedef struct ASN1_TLC_st ASN1_TLC;
+/* This is just an opaque pointer */
+typedef struct ASN1_VALUE_st ASN1_VALUE;
+
+/* Declare ASN1 functions: the implement macro in in asn1t.h */
+
+#define DECLARE_ASN1_FUNCTIONS(type) DECLARE_ASN1_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS(type) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, name, name)
+
+#define DECLARE_ASN1_FUNCTIONS_fname(type, itname, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(itname)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS_const(type, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(const type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(name)
+
+#define	DECLARE_ASN1_NDEF_FUNCTION(name) \
+	OPENSSL_EXPORT int i2d_##name##_NDEF(name *a, unsigned char **out);
+
+#define DECLARE_ASN1_FUNCTIONS_const(name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS(name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS_const(name, name)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	OPENSSL_EXPORT type *name##_new(void); \
+	OPENSSL_EXPORT void name##_free(type *a);
+
+#define DECLARE_ASN1_PRINT_FUNCTION(stname) \
+	DECLARE_ASN1_PRINT_FUNCTION_fname(stname, stname)
+
+#define DECLARE_ASN1_PRINT_FUNCTION_fname(stname, fname) \
+	OPENSSL_EXPORT int fname##_print_ctx(BIO *out, stname *x, int indent, \
+					 const ASN1_PCTX *pctx);
+
+typedef void *d2i_of_void(void **, const unsigned char **, long);
+typedef int i2d_of_void(const void *, unsigned char **);
+
+/* The following macros and typedefs allow an ASN1_ITEM
+ * to be embedded in a structure and referenced. Since
+ * the ASN1_ITEM pointers need to be globally accessible
+ * (possibly from shared libraries) they may exist in
+ * different forms. On platforms that support it the
+ * ASN1_ITEM structure itself will be globally exported.
+ * Other platforms will export a function that returns
+ * an ASN1_ITEM pointer.
+ *
+ * To handle both cases transparently the macros below
+ * should be used instead of hard coding an ASN1_ITEM
+ * pointer in a structure.
+ *
+ * The structure will look like this:
+ *
+ * typedef struct SOMETHING_st {
+ *      ...
+ *      ASN1_ITEM_EXP *iptr;
+ *      ...
+ * } SOMETHING; 
+ *
+ * It would be initialised as e.g.:
+ *
+ * SOMETHING somevar = {...,ASN1_ITEM_ref(X509),...};
+ *
+ * and the actual pointer extracted with:
+ *
+ * const ASN1_ITEM *it = ASN1_ITEM_ptr(somevar.iptr);
+ *
+ * Finally an ASN1_ITEM pointer can be extracted from an
+ * appropriate reference with: ASN1_ITEM_rptr(X509). This
+ * would be used when a function takes an ASN1_ITEM * argument.
+ *
+ */
+
+/* ASN1_ITEM pointer exported type */
+typedef const ASN1_ITEM ASN1_ITEM_EXP;
+
+/* Macro to obtain ASN1_ITEM pointer from exported type */
+#define ASN1_ITEM_ptr(iptr) (iptr)
+
+/* Macro to include ASN1_ITEM pointer from base type */
+#define ASN1_ITEM_ref(iptr) (&(iptr##_it))
+
+#define ASN1_ITEM_rptr(ref) (&(ref##_it))
+
+#define DECLARE_ASN1_ITEM(name) \
+	extern OPENSSL_EXPORT const ASN1_ITEM name##_it;
+
+/* Parameters used by ASN1_STRING_print_ex() */
+
+/* These determine which characters to escape:
+ * RFC2253 special characters, control characters and
+ * MSB set characters
+ */
+
+#define ASN1_STRFLGS_ESC_2253		1
+#define ASN1_STRFLGS_ESC_CTRL		2
+#define ASN1_STRFLGS_ESC_MSB		4
+
+
+/* This flag determines how we do escaping: normally
+ * RC2253 backslash only, set this to use backslash and
+ * quote.
+ */
+
+#define ASN1_STRFLGS_ESC_QUOTE		8
+
+
+/* These three flags are internal use only. */
+
+/* Character is a valid PrintableString character */
+#define CHARTYPE_PRINTABLESTRING	0x10
+/* Character needs escaping if it is the first character */
+#define CHARTYPE_FIRST_ESC_2253		0x20
+/* Character needs escaping if it is the last character */
+#define CHARTYPE_LAST_ESC_2253		0x40
+
+/* NB the internal flags are safely reused below by flags
+ * handled at the top level.
+ */
+
+/* If this is set we convert all character strings
+ * to UTF8 first 
+ */
+
+#define ASN1_STRFLGS_UTF8_CONVERT	0x10
+
+/* If this is set we don't attempt to interpret content:
+ * just assume all strings are 1 byte per character. This
+ * will produce some pretty odd looking output!
+ */
+
+#define ASN1_STRFLGS_IGNORE_TYPE	0x20
+
+/* If this is set we include the string type in the output */
+#define ASN1_STRFLGS_SHOW_TYPE		0x40
+
+/* This determines which strings to display and which to
+ * 'dump' (hex dump of content octets or DER encoding). We can
+ * only dump non character strings or everything. If we
+ * don't dump 'unknown' they are interpreted as character
+ * strings with 1 octet per character and are subject to
+ * the usual escaping options.
+ */
+
+#define ASN1_STRFLGS_DUMP_ALL		0x80
+#define ASN1_STRFLGS_DUMP_UNKNOWN	0x100
+
+/* These determine what 'dumping' does, we can dump the
+ * content octets or the DER encoding: both use the
+ * RFC2253 #XXXXX notation.
+ */
+
+#define ASN1_STRFLGS_DUMP_DER		0x200
+
+/* All the string flags consistent with RFC2253,
+ * escaping control characters isn't essential in
+ * RFC2253 but it is advisable anyway.
+ */
+
+#define ASN1_STRFLGS_RFC2253	(ASN1_STRFLGS_ESC_2253 | \
+				ASN1_STRFLGS_ESC_CTRL | \
+				ASN1_STRFLGS_ESC_MSB | \
+				ASN1_STRFLGS_UTF8_CONVERT | \
+				ASN1_STRFLGS_DUMP_UNKNOWN | \
+				ASN1_STRFLGS_DUMP_DER)
+
+DEFINE_STACK_OF(ASN1_INTEGER)
+DECLARE_ASN1_SET_OF(ASN1_INTEGER)
+
+struct asn1_type_st
+	{
+	int type;
+	union	{
+		char *ptr;
+		ASN1_BOOLEAN		boolean;
+		ASN1_STRING *		asn1_string;
+		ASN1_OBJECT *		object;
+		ASN1_INTEGER *		integer;
+		ASN1_ENUMERATED *	enumerated;
+		ASN1_BIT_STRING *	bit_string;
+		ASN1_OCTET_STRING *	octet_string;
+		ASN1_PRINTABLESTRING *	printablestring;
+		ASN1_T61STRING *	t61string;
+		ASN1_IA5STRING *	ia5string;
+		ASN1_GENERALSTRING *	generalstring;
+		ASN1_BMPSTRING *	bmpstring;
+		ASN1_UNIVERSALSTRING *	universalstring;
+		ASN1_UTCTIME *		utctime;
+		ASN1_GENERALIZEDTIME *	generalizedtime;
+		ASN1_VISIBLESTRING *	visiblestring;
+		ASN1_UTF8STRING *	utf8string;
+		/* set and sequence are left complete and still
+		 * contain the set or sequence bytes */
+		ASN1_STRING *		set;
+		ASN1_STRING *		sequence;
+		ASN1_VALUE *		asn1_value;
+		} value;
+    };
+
+DEFINE_STACK_OF(ASN1_TYPE)
+DECLARE_ASN1_SET_OF(ASN1_TYPE)
+
+typedef STACK_OF(ASN1_TYPE) ASN1_SEQUENCE_ANY;
+
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SET_ANY)
+
+struct X509_algor_st
+       {
+       ASN1_OBJECT *algorithm;
+       ASN1_TYPE *parameter;
+       } /* X509_ALGOR */;
+
+DECLARE_ASN1_FUNCTIONS(X509_ALGOR)
+
+/* This is used to contain a list of bit names */
+typedef struct BIT_STRING_BITNAME_st {
+	int bitnum;
+	const char *lname;
+	const char *sname;
+} BIT_STRING_BITNAME;
+
+
+#define M_ASN1_STRING_length(x)	((x)->length)
+#define M_ASN1_STRING_length_set(x, n)	((x)->length = (n))
+#define M_ASN1_STRING_type(x)	((x)->type)
+#define M_ASN1_STRING_data(x)	((x)->data)
+
+/* Macros for string operations */
+#define M_ASN1_BIT_STRING_new()	(ASN1_BIT_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_BIT_STRING)
+#define M_ASN1_BIT_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_dup(a) (ASN1_BIT_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_BIT_STRING_set(a,b,c) ASN1_STRING_set((ASN1_STRING *)a,b,c)
+
+#define M_ASN1_INTEGER_new()	(ASN1_INTEGER *)\
+		ASN1_STRING_type_new(V_ASN1_INTEGER)
+#define M_ASN1_INTEGER_free(a)		ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_INTEGER_dup(a) (ASN1_INTEGER *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_INTEGER_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_ENUMERATED_new()	(ASN1_ENUMERATED *)\
+		ASN1_STRING_type_new(V_ASN1_ENUMERATED)
+#define M_ASN1_ENUMERATED_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_dup(a) (ASN1_ENUMERATED *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_OCTET_STRING_new()	(ASN1_OCTET_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_OCTET_STRING)
+#define M_ASN1_OCTET_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_dup(a) (ASN1_OCTET_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_OCTET_STRING_set(a,b,c)	ASN1_STRING_set((ASN1_STRING *)a,b,c)
+#define M_ASN1_OCTET_STRING_print(a,b)	ASN1_STRING_print(a,(ASN1_STRING *)b)
+
+#define B_ASN1_TIME \
+			B_ASN1_UTCTIME | \
+			B_ASN1_GENERALIZEDTIME
+
+#define B_ASN1_PRINTABLE \
+			B_ASN1_NUMERICSTRING| \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_T61STRING| \
+			B_ASN1_IA5STRING| \
+			B_ASN1_BIT_STRING| \
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING|\
+			B_ASN1_SEQUENCE|\
+			B_ASN1_UNKNOWN
+
+#define B_ASN1_DIRECTORYSTRING \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_TELETEXSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_UTF8STRING
+
+#define B_ASN1_DISPLAYTEXT \
+			B_ASN1_IA5STRING| \
+			B_ASN1_VISIBLESTRING| \
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING
+
+#define M_ASN1_PRINTABLE_new()	ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_PRINTABLE_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DIRECTORYSTRING_new() ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_DIRECTORYSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DISPLAYTEXT_new() ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_DISPLAYTEXT_free(a) ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_PRINTABLESTRING_new() (ASN1_PRINTABLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_ASN1_PRINTABLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_T61STRING_new()	(ASN1_T61STRING *)\
+		ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_T61STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_IA5STRING_new()	(ASN1_IA5STRING *)\
+		ASN1_STRING_type_new(V_ASN1_IA5STRING)
+#define M_ASN1_IA5STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_IA5STRING_dup(a)	\
+		(ASN1_IA5STRING *)ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_UTCTIME_new()	(ASN1_UTCTIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_UTCTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_UTCTIME_dup(a) (ASN1_UTCTIME *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALIZEDTIME_new()	(ASN1_GENERALIZEDTIME *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALIZEDTIME)
+#define M_ASN1_GENERALIZEDTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_GENERALIZEDTIME_dup(a) (ASN1_GENERALIZEDTIME *)ASN1_STRING_dup(\
+	(const ASN1_STRING *)a)
+
+#define M_ASN1_TIME_new()	(ASN1_TIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_TIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_TIME_dup(a) (ASN1_TIME *)\
+	ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALSTRING_new()	(ASN1_GENERALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALSTRING)
+#define M_ASN1_GENERALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UNIVERSALSTRING_new()	(ASN1_UNIVERSALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_UNIVERSALSTRING)
+#define M_ASN1_UNIVERSALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_BMPSTRING_new()	(ASN1_BMPSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_BMPSTRING)
+#define M_ASN1_BMPSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_VISIBLESTRING_new()	(ASN1_VISIBLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_ASN1_VISIBLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UTF8STRING_new()	(ASN1_UTF8STRING *)\
+		ASN1_STRING_type_new(V_ASN1_UTF8STRING)
+#define M_ASN1_UTF8STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+DECLARE_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
+
+OPENSSL_EXPORT int ASN1_TYPE_get(ASN1_TYPE *a);
+OPENSSL_EXPORT void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value);
+OPENSSL_EXPORT int ASN1_TYPE_set1(ASN1_TYPE *a, int type, const void *value);
+OPENSSL_EXPORT int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b);
+
+OPENSSL_EXPORT ASN1_OBJECT *	ASN1_OBJECT_new(void );
+OPENSSL_EXPORT void		ASN1_OBJECT_free(ASN1_OBJECT *a);
+OPENSSL_EXPORT int		i2d_ASN1_OBJECT(ASN1_OBJECT *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_OBJECT *	c2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+OPENSSL_EXPORT ASN1_OBJECT *	d2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+
+DECLARE_ASN1_ITEM(ASN1_OBJECT)
+
+DECLARE_ASN1_SET_OF(ASN1_OBJECT)
+
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_new(void);
+OPENSSL_EXPORT void		ASN1_STRING_free(ASN1_STRING *a);
+OPENSSL_EXPORT int		ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_dup(const ASN1_STRING *a);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_type_new(int type );
+OPENSSL_EXPORT int 		ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b);
+  /* Since this is used to store all sorts of things, via macros, for now, make
+     its data void * */
+OPENSSL_EXPORT int 		ASN1_STRING_set(ASN1_STRING *str, const void *data, int len);
+OPENSSL_EXPORT void		ASN1_STRING_set0(ASN1_STRING *str, void *data, int len);
+OPENSSL_EXPORT int ASN1_STRING_length(const ASN1_STRING *x);
+OPENSSL_EXPORT void ASN1_STRING_length_set(ASN1_STRING *x, int n);
+OPENSSL_EXPORT int ASN1_STRING_type(ASN1_STRING *x);
+OPENSSL_EXPORT unsigned char * ASN1_STRING_data(ASN1_STRING *x);
+OPENSSL_EXPORT const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_BIT_STRING)
+OPENSSL_EXPORT int		i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set(ASN1_BIT_STRING *a, unsigned char *d, int length );
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n);
+OPENSSL_EXPORT int            ASN1_BIT_STRING_check(ASN1_BIT_STRING *a, unsigned char *flags, int flags_len);
+
+OPENSSL_EXPORT int		i2d_ASN1_BOOLEAN(int a,unsigned char **pp);
+OPENSSL_EXPORT int 		d2i_ASN1_BOOLEAN(int *a,const unsigned char **pp,long length);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_INTEGER)
+OPENSSL_EXPORT int		i2c_ASN1_INTEGER(ASN1_INTEGER *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT ASN1_INTEGER *	ASN1_INTEGER_dup(const ASN1_INTEGER *x);
+OPENSSL_EXPORT int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_ENUMERATED)
+
+OPENSSL_EXPORT int ASN1_UTCTIME_check(const ASN1_UTCTIME *a);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t);
+#if 0
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s);
+#endif
+
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_TIME_diff(int *pday, int *psec, const ASN1_TIME *from, const ASN1_TIME *to);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_OCTET_STRING)
+OPENSSL_EXPORT ASN1_OCTET_STRING *	ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *a);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_cmp(const ASN1_OCTET_STRING *a, const ASN1_OCTET_STRING *b);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *str, const unsigned char *data, int len);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_VISIBLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UNIVERSALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTF8STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_NULL)
+DECLARE_ASN1_FUNCTIONS(ASN1_BMPSTRING)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, ASN1_PRINTABLE)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DIRECTORYSTRING)
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DISPLAYTEXT)
+DECLARE_ASN1_FUNCTIONS(ASN1_PRINTABLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_T61STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_IA5STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTCTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALIZEDTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_TIME)
+
+DECLARE_ASN1_ITEM(ASN1_OCTET_STRING_NDEF)
+
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s,time_t t);
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s,time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_TIME_check(ASN1_TIME *t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out);
+OPENSSL_EXPORT int ASN1_TIME_set_string(ASN1_TIME *s, const char *str);
+
+OPENSSL_EXPORT int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a);
+OPENSSL_EXPORT int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a);
+OPENSSL_EXPORT int i2a_ASN1_OBJECT(BIO *bp,ASN1_OBJECT *a);
+OPENSSL_EXPORT int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type);
+OPENSSL_EXPORT int i2t_ASN1_OBJECT(char *buf,int buf_len,ASN1_OBJECT *a);
+
+OPENSSL_EXPORT ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data,int len, const char *sn, const char *ln);
+
+OPENSSL_EXPORT int ASN1_INTEGER_set(ASN1_INTEGER *a, long v);
+OPENSSL_EXPORT int ASN1_INTEGER_set_uint64(ASN1_INTEGER *out, uint64_t v);
+OPENSSL_EXPORT long ASN1_INTEGER_get(const ASN1_INTEGER *a);
+OPENSSL_EXPORT ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai,BIGNUM *bn);
+
+OPENSSL_EXPORT int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
+OPENSSL_EXPORT long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a);
+OPENSSL_EXPORT ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai,BIGNUM *bn);
+
+/* General */
+/* given a string, return the correct type, max is the maximum length */
+OPENSSL_EXPORT int ASN1_PRINTABLE_type(const unsigned char *s, int max);
+
+OPENSSL_EXPORT unsigned long ASN1_tag2bit(int tag);
+
+/* SPECIALS */
+OPENSSL_EXPORT int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag, int *pclass, long omax);
+OPENSSL_EXPORT void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag, int xclass);
+OPENSSL_EXPORT int ASN1_put_eoc(unsigned char **pp);
+OPENSSL_EXPORT int ASN1_object_size(int constructed, int length, int tag);
+
+OPENSSL_EXPORT void *ASN1_item_dup(const ASN1_ITEM *it, void *x);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x);
+OPENSSL_EXPORT int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in);
+
+OPENSSL_EXPORT void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x);
+OPENSSL_EXPORT int ASN1_UTCTIME_print(BIO *fp, const ASN1_UTCTIME *a);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_print(BIO *fp, const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT int ASN1_TIME_print(BIO *fp, const ASN1_TIME *a);
+OPENSSL_EXPORT int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v);
+OPENSSL_EXPORT int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags);
+OPENSSL_EXPORT const char *ASN1_tag2str(int tag);
+
+/* Used to load and write netscape format cert */
+
+OPENSSL_EXPORT void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_OCTET_STRING **oct);
+
+OPENSSL_EXPORT void ASN1_STRING_set_default_mask(unsigned long mask);
+OPENSSL_EXPORT int ASN1_STRING_set_default_mask_asc(const char *p);
+OPENSSL_EXPORT unsigned long ASN1_STRING_get_default_mask(void);
+OPENSSL_EXPORT int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask);
+OPENSSL_EXPORT int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask, long minsize, long maxsize);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, int inlen, int inform, int nid);
+OPENSSL_EXPORT ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid);
+OPENSSL_EXPORT int ASN1_STRING_TABLE_add(int, long, long, unsigned long, unsigned long);
+OPENSSL_EXPORT void ASN1_STRING_TABLE_cleanup(void);
+
+/* ASN1 template functions */
+
+/* Old API compatible functions */
+OPENSSL_EXPORT ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it);
+OPENSSL_EXPORT void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it);
+OPENSSL_EXPORT ASN1_VALUE * ASN1_item_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf);
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf);
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ASN1_OBJECT, ASN1_OBJECT_free)
+BORINGSSL_MAKE_DELETER(ASN1_STRING, ASN1_STRING_free)
+BORINGSSL_MAKE_DELETER(ASN1_TYPE, ASN1_TYPE_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+
+#endif
+
+#define ASN1_R_ASN1_LENGTH_MISMATCH 100
+#define ASN1_R_AUX_ERROR 101
+#define ASN1_R_BAD_GET_ASN1_OBJECT_CALL 102
+#define ASN1_R_BAD_OBJECT_HEADER 103
+#define ASN1_R_BMPSTRING_IS_WRONG_LENGTH 104
+#define ASN1_R_BN_LIB 105
+#define ASN1_R_BOOLEAN_IS_WRONG_LENGTH 106
+#define ASN1_R_BUFFER_TOO_SMALL 107
+#define ASN1_R_CONTEXT_NOT_INITIALISED 108
+#define ASN1_R_DECODE_ERROR 109
+#define ASN1_R_DEPTH_EXCEEDED 110
+#define ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED 111
+#define ASN1_R_ENCODE_ERROR 112
+#define ASN1_R_ERROR_GETTING_TIME 113
+#define ASN1_R_EXPECTING_AN_ASN1_SEQUENCE 114
+#define ASN1_R_EXPECTING_AN_INTEGER 115
+#define ASN1_R_EXPECTING_AN_OBJECT 116
+#define ASN1_R_EXPECTING_A_BOOLEAN 117
+#define ASN1_R_EXPECTING_A_TIME 118
+#define ASN1_R_EXPLICIT_LENGTH_MISMATCH 119
+#define ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED 120
+#define ASN1_R_FIELD_MISSING 121
+#define ASN1_R_FIRST_NUM_TOO_LARGE 122
+#define ASN1_R_HEADER_TOO_LONG 123
+#define ASN1_R_ILLEGAL_BITSTRING_FORMAT 124
+#define ASN1_R_ILLEGAL_BOOLEAN 125
+#define ASN1_R_ILLEGAL_CHARACTERS 126
+#define ASN1_R_ILLEGAL_FORMAT 127
+#define ASN1_R_ILLEGAL_HEX 128
+#define ASN1_R_ILLEGAL_IMPLICIT_TAG 129
+#define ASN1_R_ILLEGAL_INTEGER 130
+#define ASN1_R_ILLEGAL_NESTED_TAGGING 131
+#define ASN1_R_ILLEGAL_NULL 132
+#define ASN1_R_ILLEGAL_NULL_VALUE 133
+#define ASN1_R_ILLEGAL_OBJECT 134
+#define ASN1_R_ILLEGAL_OPTIONAL_ANY 135
+#define ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE 136
+#define ASN1_R_ILLEGAL_TAGGED_ANY 137
+#define ASN1_R_ILLEGAL_TIME_VALUE 138
+#define ASN1_R_INTEGER_NOT_ASCII_FORMAT 139
+#define ASN1_R_INTEGER_TOO_LARGE_FOR_LONG 140
+#define ASN1_R_INVALID_BIT_STRING_BITS_LEFT 141
+#define ASN1_R_INVALID_BMPSTRING 142
+#define ASN1_R_INVALID_DIGIT 143
+#define ASN1_R_INVALID_MODIFIER 144
+#define ASN1_R_INVALID_NUMBER 145
+#define ASN1_R_INVALID_OBJECT_ENCODING 146
+#define ASN1_R_INVALID_SEPARATOR 147
+#define ASN1_R_INVALID_TIME_FORMAT 148
+#define ASN1_R_INVALID_UNIVERSALSTRING 149
+#define ASN1_R_INVALID_UTF8STRING 150
+#define ASN1_R_LIST_ERROR 151
+#define ASN1_R_MISSING_ASN1_EOS 152
+#define ASN1_R_MISSING_EOC 153
+#define ASN1_R_MISSING_SECOND_NUMBER 154
+#define ASN1_R_MISSING_VALUE 155
+#define ASN1_R_MSTRING_NOT_UNIVERSAL 156
+#define ASN1_R_MSTRING_WRONG_TAG 157
+#define ASN1_R_NESTED_ASN1_ERROR 158
+#define ASN1_R_NESTED_ASN1_STRING 159
+#define ASN1_R_NON_HEX_CHARACTERS 160
+#define ASN1_R_NOT_ASCII_FORMAT 161
+#define ASN1_R_NOT_ENOUGH_DATA 162
+#define ASN1_R_NO_MATCHING_CHOICE_TYPE 163
+#define ASN1_R_NULL_IS_WRONG_LENGTH 164
+#define ASN1_R_OBJECT_NOT_ASCII_FORMAT 165
+#define ASN1_R_ODD_NUMBER_OF_CHARS 166
+#define ASN1_R_SECOND_NUMBER_TOO_LARGE 167
+#define ASN1_R_SEQUENCE_LENGTH_MISMATCH 168
+#define ASN1_R_SEQUENCE_NOT_CONSTRUCTED 169
+#define ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG 170
+#define ASN1_R_SHORT_LINE 171
+#define ASN1_R_STREAMING_NOT_SUPPORTED 172
+#define ASN1_R_STRING_TOO_LONG 173
+#define ASN1_R_STRING_TOO_SHORT 174
+#define ASN1_R_TAG_VALUE_TOO_HIGH 175
+#define ASN1_R_TIME_NOT_ASCII_FORMAT 176
+#define ASN1_R_TOO_LONG 177
+#define ASN1_R_TYPE_NOT_CONSTRUCTED 178
+#define ASN1_R_TYPE_NOT_PRIMITIVE 179
+#define ASN1_R_UNEXPECTED_EOC 180
+#define ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH 181
+#define ASN1_R_UNKNOWN_FORMAT 182
+#define ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM 183
+#define ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM 184
+#define ASN1_R_UNKNOWN_TAG 185
+#define ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE 186
+#define ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE 187
+#define ASN1_R_UNSUPPORTED_TYPE 188
+#define ASN1_R_WRONG_PUBLIC_KEY_TYPE 189
+#define ASN1_R_WRONG_TAG 190
+#define ASN1_R_WRONG_TYPE 191
+#define ASN1_R_NESTED_TOO_DEEP 192
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.back
new file mode 100644
index 0000000..6ae831b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.back	
@@ -0,0 +1,911 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_ASN1_H
+#define HEADER_ASN1_H
+
+#include <openssl/base.h>
+
+#include <time.h>
+
+#include <openssl/bio.h>
+#include <openssl/stack.h>
+
+#include <openssl/bn.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library.
+ *
+ * This header is part of OpenSSL's ASN.1 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. Use
+ * the new |CBS| and |CBB| library in <openssl/bytestring.h> instead. */
+
+
+#define V_ASN1_UNIVERSAL		0x00
+#define	V_ASN1_APPLICATION		0x40
+#define V_ASN1_CONTEXT_SPECIFIC		0x80
+#define V_ASN1_PRIVATE			0xc0
+
+#define V_ASN1_CONSTRUCTED		0x20
+#define V_ASN1_PRIMITIVE_TAG		0x1f
+
+#define V_ASN1_APP_CHOOSE		-2	/* let the recipient choose */
+#define V_ASN1_OTHER			-3	/* used in ASN1_TYPE */
+#define V_ASN1_ANY			-4	/* used in ASN1 template code */
+
+#define V_ASN1_NEG			0x100	/* negative flag */
+/* No supported universal tags may exceed this value, to avoid ambiguity with
+ * V_ASN1_NEG. */
+#define V_ASN1_MAX_UNIVERSAL		0xff
+
+#define V_ASN1_UNDEF			-1
+#define V_ASN1_EOC			0
+#define V_ASN1_BOOLEAN			1	/**/
+#define V_ASN1_INTEGER			2
+#define V_ASN1_NEG_INTEGER		(2 | V_ASN1_NEG)
+#define V_ASN1_BIT_STRING		3
+#define V_ASN1_OCTET_STRING		4
+#define V_ASN1_NULL			5
+#define V_ASN1_OBJECT			6
+#define V_ASN1_OBJECT_DESCRIPTOR	7
+#define V_ASN1_EXTERNAL			8
+#define V_ASN1_REAL			9
+#define V_ASN1_ENUMERATED		10
+#define V_ASN1_NEG_ENUMERATED		(10 | V_ASN1_NEG)
+#define V_ASN1_UTF8STRING		12
+#define V_ASN1_SEQUENCE			16
+#define V_ASN1_SET			17
+#define V_ASN1_NUMERICSTRING		18	/**/
+#define V_ASN1_PRINTABLESTRING		19
+#define V_ASN1_T61STRING		20
+#define V_ASN1_TELETEXSTRING		20	/* alias */
+#define V_ASN1_VIDEOTEXSTRING		21	/**/
+#define V_ASN1_IA5STRING		22
+#define V_ASN1_UTCTIME			23
+#define V_ASN1_GENERALIZEDTIME		24	/**/
+#define V_ASN1_GRAPHICSTRING		25	/**/
+#define V_ASN1_ISO64STRING		26	/**/
+#define V_ASN1_VISIBLESTRING		26	/* alias */
+#define V_ASN1_GENERALSTRING		27	/**/
+#define V_ASN1_UNIVERSALSTRING		28	/**/
+#define V_ASN1_BMPSTRING		30
+
+/* For use with d2i_ASN1_type_bytes() */
+#define B_ASN1_NUMERICSTRING	0x0001
+#define B_ASN1_PRINTABLESTRING	0x0002
+#define B_ASN1_T61STRING	0x0004
+#define B_ASN1_TELETEXSTRING	0x0004
+#define B_ASN1_VIDEOTEXSTRING	0x0008
+#define B_ASN1_IA5STRING	0x0010
+#define B_ASN1_GRAPHICSTRING	0x0020
+#define B_ASN1_ISO64STRING	0x0040
+#define B_ASN1_VISIBLESTRING	0x0040
+#define B_ASN1_GENERALSTRING	0x0080
+#define B_ASN1_UNIVERSALSTRING	0x0100
+#define B_ASN1_OCTET_STRING	0x0200
+#define B_ASN1_BIT_STRING	0x0400
+#define B_ASN1_BMPSTRING	0x0800
+#define B_ASN1_UNKNOWN		0x1000
+#define B_ASN1_UTF8STRING	0x2000
+#define B_ASN1_UTCTIME		0x4000
+#define B_ASN1_GENERALIZEDTIME	0x8000
+#define B_ASN1_SEQUENCE		0x10000
+
+/* For use with ASN1_mbstring_copy() */
+#define MBSTRING_FLAG		0x1000
+#define MBSTRING_UTF8		(MBSTRING_FLAG)
+/* |MBSTRING_ASC| refers to Latin-1, not ASCII. It is used with TeletexString
+ * which, in turn, is treated as Latin-1 rather than T.61 by OpenSSL and most
+ * other software. */
+#define MBSTRING_ASC		(MBSTRING_FLAG|1)
+#define MBSTRING_BMP		(MBSTRING_FLAG|2)
+#define MBSTRING_UNIV		(MBSTRING_FLAG|4)
+
+#define DECLARE_ASN1_SET_OF(type) /* filled in by mkstack.pl */
+#define IMPLEMENT_ASN1_SET_OF(type) /* nothing, no longer needed */
+
+/* These are used internally in the ASN1_OBJECT to keep track of
+ * whether the names and data need to be free()ed */
+#define ASN1_OBJECT_FLAG_DYNAMIC	 0x01	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_DATA 	 0x08	/* internal use */
+struct asn1_object_st
+	{
+	const char *sn,*ln;
+	int nid;
+	int length;
+	const unsigned char *data;	/* data remains const after init */
+	int flags;	/* Should we free this one */
+	};
+
+DEFINE_STACK_OF(ASN1_OBJECT)
+
+#define ASN1_STRING_FLAG_BITS_LEFT 0x08 /* Set if 0x07 has bits left value */
+/* This indicates that the ASN1_STRING is not a real value but just a place
+ * holder for the location where indefinite length constructed data should
+ * be inserted in the memory buffer 
+ */
+#define ASN1_STRING_FLAG_NDEF 0x010 
+
+/* This flag is used by ASN1 code to indicate an ASN1_STRING is an MSTRING
+ * type.
+ */
+#define ASN1_STRING_FLAG_MSTRING 0x040 
+/* This is the base type that holds just about everything :-) */
+struct asn1_string_st
+	{
+	int length;
+	int type;
+	unsigned char *data;
+	/* The value of the following field depends on the type being
+	 * held.  It is mostly being used for BIT_STRING so if the
+	 * input data has a non-zero 'unused bits' value, it will be
+	 * handled correctly */
+	long flags;
+	};
+
+/* ASN1_ENCODING structure: this is used to save the received
+ * encoding of an ASN1 type. This is useful to get round
+ * problems with invalid encodings which can break signatures.
+ */
+
+typedef struct ASN1_ENCODING_st
+	{
+	unsigned char *enc;	/* DER encoding */
+	long len;		/* Length of encoding */
+	int modified;		/* set to 1 if 'enc' is invalid */
+	/* alias_only is zero if |enc| owns the buffer that it points to
+	 * (although |enc| may still be NULL). If one, |enc| points into a
+	 * buffer that is owned elsewhere. */
+	unsigned alias_only:1;
+	/* alias_only_on_next_parse is one iff the next parsing operation
+	 * should avoid taking a copy of the input and rather set
+	 * |alias_only|. */
+	unsigned alias_only_on_next_parse:1;
+	} ASN1_ENCODING;
+
+#define STABLE_FLAGS_MALLOC	0x01
+#define STABLE_NO_MASK		0x02
+#define DIRSTRING_TYPE	\
+ (B_ASN1_PRINTABLESTRING|B_ASN1_T61STRING|B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)
+#define PKCS9STRING_TYPE (DIRSTRING_TYPE|B_ASN1_IA5STRING)
+
+typedef struct asn1_string_table_st {
+	int nid;
+	long minsize;
+	long maxsize;
+	unsigned long mask;
+	unsigned long flags;
+} ASN1_STRING_TABLE;
+
+/* size limits: this stuff is taken straight from RFC2459 */
+
+#define ub_name				32768
+#define ub_common_name			64
+#define ub_locality_name		128
+#define ub_state_name			128
+#define ub_organization_name		64
+#define ub_organization_unit_name	64
+#define ub_title			64
+#define ub_email_address		128
+
+/* Declarations for template structures: for full definitions
+ * see asn1t.h
+ */
+typedef struct ASN1_TEMPLATE_st ASN1_TEMPLATE;
+typedef struct ASN1_TLC_st ASN1_TLC;
+/* This is just an opaque pointer */
+typedef struct ASN1_VALUE_st ASN1_VALUE;
+
+/* Declare ASN1 functions: the implement macro in in asn1t.h */
+
+#define DECLARE_ASN1_FUNCTIONS(type) DECLARE_ASN1_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS(type) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, name, name)
+
+#define DECLARE_ASN1_FUNCTIONS_fname(type, itname, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(itname)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS_const(type, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(const type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(name)
+
+#define	DECLARE_ASN1_NDEF_FUNCTION(name) \
+	OPENSSL_EXPORT int i2d_##name##_NDEF(name *a, unsigned char **out);
+
+#define DECLARE_ASN1_FUNCTIONS_const(name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS(name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS_const(name, name)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	OPENSSL_EXPORT type *name##_new(void); \
+	OPENSSL_EXPORT void name##_free(type *a);
+
+#define DECLARE_ASN1_PRINT_FUNCTION(stname) \
+	DECLARE_ASN1_PRINT_FUNCTION_fname(stname, stname)
+
+#define DECLARE_ASN1_PRINT_FUNCTION_fname(stname, fname) \
+	OPENSSL_EXPORT int fname##_print_ctx(BIO *out, stname *x, int indent, \
+					 const ASN1_PCTX *pctx);
+
+typedef void *d2i_of_void(void **, const unsigned char **, long);
+typedef int i2d_of_void(const void *, unsigned char **);
+
+/* The following macros and typedefs allow an ASN1_ITEM
+ * to be embedded in a structure and referenced. Since
+ * the ASN1_ITEM pointers need to be globally accessible
+ * (possibly from shared libraries) they may exist in
+ * different forms. On platforms that support it the
+ * ASN1_ITEM structure itself will be globally exported.
+ * Other platforms will export a function that returns
+ * an ASN1_ITEM pointer.
+ *
+ * To handle both cases transparently the macros below
+ * should be used instead of hard coding an ASN1_ITEM
+ * pointer in a structure.
+ *
+ * The structure will look like this:
+ *
+ * typedef struct SOMETHING_st {
+ *      ...
+ *      ASN1_ITEM_EXP *iptr;
+ *      ...
+ * } SOMETHING; 
+ *
+ * It would be initialised as e.g.:
+ *
+ * SOMETHING somevar = {...,ASN1_ITEM_ref(X509),...};
+ *
+ * and the actual pointer extracted with:
+ *
+ * const ASN1_ITEM *it = ASN1_ITEM_ptr(somevar.iptr);
+ *
+ * Finally an ASN1_ITEM pointer can be extracted from an
+ * appropriate reference with: ASN1_ITEM_rptr(X509). This
+ * would be used when a function takes an ASN1_ITEM * argument.
+ *
+ */
+
+/* ASN1_ITEM pointer exported type */
+typedef const ASN1_ITEM ASN1_ITEM_EXP;
+
+/* Macro to obtain ASN1_ITEM pointer from exported type */
+#define ASN1_ITEM_ptr(iptr) (iptr)
+
+/* Macro to include ASN1_ITEM pointer from base type */
+#define ASN1_ITEM_ref(iptr) (&(iptr##_it))
+
+#define ASN1_ITEM_rptr(ref) (&(ref##_it))
+
+#define DECLARE_ASN1_ITEM(name) \
+	extern OPENSSL_EXPORT const ASN1_ITEM name##_it;
+
+/* Parameters used by ASN1_STRING_print_ex() */
+
+/* These determine which characters to escape:
+ * RFC2253 special characters, control characters and
+ * MSB set characters
+ */
+
+#define ASN1_STRFLGS_ESC_2253		1
+#define ASN1_STRFLGS_ESC_CTRL		2
+#define ASN1_STRFLGS_ESC_MSB		4
+
+
+/* This flag determines how we do escaping: normally
+ * RC2253 backslash only, set this to use backslash and
+ * quote.
+ */
+
+#define ASN1_STRFLGS_ESC_QUOTE		8
+
+
+/* These three flags are internal use only. */
+
+/* Character is a valid PrintableString character */
+#define CHARTYPE_PRINTABLESTRING	0x10
+/* Character needs escaping if it is the first character */
+#define CHARTYPE_FIRST_ESC_2253		0x20
+/* Character needs escaping if it is the last character */
+#define CHARTYPE_LAST_ESC_2253		0x40
+
+/* NB the internal flags are safely reused below by flags
+ * handled at the top level.
+ */
+
+/* If this is set we convert all character strings
+ * to UTF8 first 
+ */
+
+#define ASN1_STRFLGS_UTF8_CONVERT	0x10
+
+/* If this is set we don't attempt to interpret content:
+ * just assume all strings are 1 byte per character. This
+ * will produce some pretty odd looking output!
+ */
+
+#define ASN1_STRFLGS_IGNORE_TYPE	0x20
+
+/* If this is set we include the string type in the output */
+#define ASN1_STRFLGS_SHOW_TYPE		0x40
+
+/* This determines which strings to display and which to
+ * 'dump' (hex dump of content octets or DER encoding). We can
+ * only dump non character strings or everything. If we
+ * don't dump 'unknown' they are interpreted as character
+ * strings with 1 octet per character and are subject to
+ * the usual escaping options.
+ */
+
+#define ASN1_STRFLGS_DUMP_ALL		0x80
+#define ASN1_STRFLGS_DUMP_UNKNOWN	0x100
+
+/* These determine what 'dumping' does, we can dump the
+ * content octets or the DER encoding: both use the
+ * RFC2253 #XXXXX notation.
+ */
+
+#define ASN1_STRFLGS_DUMP_DER		0x200
+
+/* All the string flags consistent with RFC2253,
+ * escaping control characters isn't essential in
+ * RFC2253 but it is advisable anyway.
+ */
+
+#define ASN1_STRFLGS_RFC2253	(ASN1_STRFLGS_ESC_2253 | \
+				ASN1_STRFLGS_ESC_CTRL | \
+				ASN1_STRFLGS_ESC_MSB | \
+				ASN1_STRFLGS_UTF8_CONVERT | \
+				ASN1_STRFLGS_DUMP_UNKNOWN | \
+				ASN1_STRFLGS_DUMP_DER)
+
+DEFINE_STACK_OF(ASN1_INTEGER)
+DECLARE_ASN1_SET_OF(ASN1_INTEGER)
+
+struct asn1_type_st
+	{
+	int type;
+	union	{
+		char *ptr;
+		ASN1_BOOLEAN		boolean;
+		ASN1_STRING *		asn1_string;
+		ASN1_OBJECT *		object;
+		ASN1_INTEGER *		integer;
+		ASN1_ENUMERATED *	enumerated;
+		ASN1_BIT_STRING *	bit_string;
+		ASN1_OCTET_STRING *	octet_string;
+		ASN1_PRINTABLESTRING *	printablestring;
+		ASN1_T61STRING *	t61string;
+		ASN1_IA5STRING *	ia5string;
+		ASN1_GENERALSTRING *	generalstring;
+		ASN1_BMPSTRING *	bmpstring;
+		ASN1_UNIVERSALSTRING *	universalstring;
+		ASN1_UTCTIME *		utctime;
+		ASN1_GENERALIZEDTIME *	generalizedtime;
+		ASN1_VISIBLESTRING *	visiblestring;
+		ASN1_UTF8STRING *	utf8string;
+		/* set and sequence are left complete and still
+		 * contain the set or sequence bytes */
+		ASN1_STRING *		set;
+		ASN1_STRING *		sequence;
+		ASN1_VALUE *		asn1_value;
+		} value;
+    };
+
+DEFINE_STACK_OF(ASN1_TYPE)
+DECLARE_ASN1_SET_OF(ASN1_TYPE)
+
+typedef STACK_OF(ASN1_TYPE) ASN1_SEQUENCE_ANY;
+
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SET_ANY)
+
+struct X509_algor_st
+       {
+       ASN1_OBJECT *algorithm;
+       ASN1_TYPE *parameter;
+       } /* X509_ALGOR */;
+
+DECLARE_ASN1_FUNCTIONS(X509_ALGOR)
+
+/* This is used to contain a list of bit names */
+typedef struct BIT_STRING_BITNAME_st {
+	int bitnum;
+	const char *lname;
+	const char *sname;
+} BIT_STRING_BITNAME;
+
+
+#define M_ASN1_STRING_length(x)	((x)->length)
+#define M_ASN1_STRING_length_set(x, n)	((x)->length = (n))
+#define M_ASN1_STRING_type(x)	((x)->type)
+#define M_ASN1_STRING_data(x)	((x)->data)
+
+/* Macros for string operations */
+#define M_ASN1_BIT_STRING_new()	(ASN1_BIT_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_BIT_STRING)
+#define M_ASN1_BIT_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_dup(a) (ASN1_BIT_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_BIT_STRING_set(a,b,c) ASN1_STRING_set((ASN1_STRING *)a,b,c)
+
+#define M_ASN1_INTEGER_new()	(ASN1_INTEGER *)\
+		ASN1_STRING_type_new(V_ASN1_INTEGER)
+#define M_ASN1_INTEGER_free(a)		ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_INTEGER_dup(a) (ASN1_INTEGER *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_INTEGER_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_ENUMERATED_new()	(ASN1_ENUMERATED *)\
+		ASN1_STRING_type_new(V_ASN1_ENUMERATED)
+#define M_ASN1_ENUMERATED_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_dup(a) (ASN1_ENUMERATED *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_OCTET_STRING_new()	(ASN1_OCTET_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_OCTET_STRING)
+#define M_ASN1_OCTET_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_dup(a) (ASN1_OCTET_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_OCTET_STRING_set(a,b,c)	ASN1_STRING_set((ASN1_STRING *)a,b,c)
+#define M_ASN1_OCTET_STRING_print(a,b)	ASN1_STRING_print(a,(ASN1_STRING *)b)
+
+#define B_ASN1_TIME \
+			B_ASN1_UTCTIME | \
+			B_ASN1_GENERALIZEDTIME
+
+#define B_ASN1_PRINTABLE \
+			B_ASN1_NUMERICSTRING| \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_T61STRING| \
+			B_ASN1_IA5STRING| \
+			B_ASN1_BIT_STRING| \
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING|\
+			B_ASN1_SEQUENCE|\
+			B_ASN1_UNKNOWN
+
+#define B_ASN1_DIRECTORYSTRING \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_TELETEXSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_UTF8STRING
+
+#define B_ASN1_DISPLAYTEXT \
+			B_ASN1_IA5STRING| \
+			B_ASN1_VISIBLESTRING| \
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING
+
+#define M_ASN1_PRINTABLE_new()	ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_PRINTABLE_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DIRECTORYSTRING_new() ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_DIRECTORYSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DISPLAYTEXT_new() ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_DISPLAYTEXT_free(a) ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_PRINTABLESTRING_new() (ASN1_PRINTABLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_ASN1_PRINTABLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_T61STRING_new()	(ASN1_T61STRING *)\
+		ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_T61STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_IA5STRING_new()	(ASN1_IA5STRING *)\
+		ASN1_STRING_type_new(V_ASN1_IA5STRING)
+#define M_ASN1_IA5STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_IA5STRING_dup(a)	\
+		(ASN1_IA5STRING *)ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_UTCTIME_new()	(ASN1_UTCTIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_UTCTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_UTCTIME_dup(a) (ASN1_UTCTIME *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALIZEDTIME_new()	(ASN1_GENERALIZEDTIME *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALIZEDTIME)
+#define M_ASN1_GENERALIZEDTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_GENERALIZEDTIME_dup(a) (ASN1_GENERALIZEDTIME *)ASN1_STRING_dup(\
+	(const ASN1_STRING *)a)
+
+#define M_ASN1_TIME_new()	(ASN1_TIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_TIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_TIME_dup(a) (ASN1_TIME *)\
+	ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALSTRING_new()	(ASN1_GENERALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALSTRING)
+#define M_ASN1_GENERALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UNIVERSALSTRING_new()	(ASN1_UNIVERSALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_UNIVERSALSTRING)
+#define M_ASN1_UNIVERSALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_BMPSTRING_new()	(ASN1_BMPSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_BMPSTRING)
+#define M_ASN1_BMPSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_VISIBLESTRING_new()	(ASN1_VISIBLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_ASN1_VISIBLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UTF8STRING_new()	(ASN1_UTF8STRING *)\
+		ASN1_STRING_type_new(V_ASN1_UTF8STRING)
+#define M_ASN1_UTF8STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+DECLARE_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
+
+OPENSSL_EXPORT int ASN1_TYPE_get(ASN1_TYPE *a);
+OPENSSL_EXPORT void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value);
+OPENSSL_EXPORT int ASN1_TYPE_set1(ASN1_TYPE *a, int type, const void *value);
+OPENSSL_EXPORT int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b);
+
+OPENSSL_EXPORT ASN1_OBJECT *	ASN1_OBJECT_new(void );
+OPENSSL_EXPORT void		ASN1_OBJECT_free(ASN1_OBJECT *a);
+OPENSSL_EXPORT int		i2d_ASN1_OBJECT(ASN1_OBJECT *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_OBJECT *	c2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+OPENSSL_EXPORT ASN1_OBJECT *	d2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+
+DECLARE_ASN1_ITEM(ASN1_OBJECT)
+
+DECLARE_ASN1_SET_OF(ASN1_OBJECT)
+
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_new(void);
+OPENSSL_EXPORT void		ASN1_STRING_free(ASN1_STRING *a);
+OPENSSL_EXPORT int		ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_dup(const ASN1_STRING *a);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_type_new(int type );
+OPENSSL_EXPORT int 		ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b);
+  /* Since this is used to store all sorts of things, via macros, for now, make
+     its data void * */
+OPENSSL_EXPORT int 		ASN1_STRING_set(ASN1_STRING *str, const void *data, int len);
+OPENSSL_EXPORT void		ASN1_STRING_set0(ASN1_STRING *str, void *data, int len);
+OPENSSL_EXPORT int ASN1_STRING_length(const ASN1_STRING *x);
+OPENSSL_EXPORT void ASN1_STRING_length_set(ASN1_STRING *x, int n);
+OPENSSL_EXPORT int ASN1_STRING_type(ASN1_STRING *x);
+OPENSSL_EXPORT unsigned char * ASN1_STRING_data(ASN1_STRING *x);
+OPENSSL_EXPORT const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_BIT_STRING)
+OPENSSL_EXPORT int		i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set(ASN1_BIT_STRING *a, unsigned char *d, int length );
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n);
+OPENSSL_EXPORT int            ASN1_BIT_STRING_check(ASN1_BIT_STRING *a, unsigned char *flags, int flags_len);
+
+OPENSSL_EXPORT int		i2d_ASN1_BOOLEAN(int a,unsigned char **pp);
+OPENSSL_EXPORT int 		d2i_ASN1_BOOLEAN(int *a,const unsigned char **pp,long length);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_INTEGER)
+OPENSSL_EXPORT int		i2c_ASN1_INTEGER(ASN1_INTEGER *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT ASN1_INTEGER *	ASN1_INTEGER_dup(const ASN1_INTEGER *x);
+OPENSSL_EXPORT int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_ENUMERATED)
+
+OPENSSL_EXPORT int ASN1_UTCTIME_check(const ASN1_UTCTIME *a);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t);
+#if 0
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s);
+#endif
+
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_TIME_diff(int *pday, int *psec, const ASN1_TIME *from, const ASN1_TIME *to);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_OCTET_STRING)
+OPENSSL_EXPORT ASN1_OCTET_STRING *	ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *a);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_cmp(const ASN1_OCTET_STRING *a, const ASN1_OCTET_STRING *b);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *str, const unsigned char *data, int len);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_VISIBLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UNIVERSALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTF8STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_NULL)
+DECLARE_ASN1_FUNCTIONS(ASN1_BMPSTRING)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, ASN1_PRINTABLE)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DIRECTORYSTRING)
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DISPLAYTEXT)
+DECLARE_ASN1_FUNCTIONS(ASN1_PRINTABLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_T61STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_IA5STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTCTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALIZEDTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_TIME)
+
+DECLARE_ASN1_ITEM(ASN1_OCTET_STRING_NDEF)
+
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s,time_t t);
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s,time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_TIME_check(ASN1_TIME *t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out);
+OPENSSL_EXPORT int ASN1_TIME_set_string(ASN1_TIME *s, const char *str);
+
+OPENSSL_EXPORT int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a);
+OPENSSL_EXPORT int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a);
+OPENSSL_EXPORT int i2a_ASN1_OBJECT(BIO *bp,ASN1_OBJECT *a);
+OPENSSL_EXPORT int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type);
+OPENSSL_EXPORT int i2t_ASN1_OBJECT(char *buf,int buf_len,ASN1_OBJECT *a);
+
+OPENSSL_EXPORT ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data,int len, const char *sn, const char *ln);
+
+OPENSSL_EXPORT int ASN1_INTEGER_set(ASN1_INTEGER *a, long v);
+OPENSSL_EXPORT int ASN1_INTEGER_set_uint64(ASN1_INTEGER *out, uint64_t v);
+OPENSSL_EXPORT long ASN1_INTEGER_get(const ASN1_INTEGER *a);
+OPENSSL_EXPORT ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai,BIGNUM *bn);
+
+OPENSSL_EXPORT int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
+OPENSSL_EXPORT long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a);
+OPENSSL_EXPORT ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai,BIGNUM *bn);
+
+/* General */
+/* given a string, return the correct type, max is the maximum length */
+OPENSSL_EXPORT int ASN1_PRINTABLE_type(const unsigned char *s, int max);
+
+OPENSSL_EXPORT unsigned long ASN1_tag2bit(int tag);
+
+/* SPECIALS */
+OPENSSL_EXPORT int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag, int *pclass, long omax);
+OPENSSL_EXPORT void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag, int xclass);
+OPENSSL_EXPORT int ASN1_put_eoc(unsigned char **pp);
+OPENSSL_EXPORT int ASN1_object_size(int constructed, int length, int tag);
+
+OPENSSL_EXPORT void *ASN1_item_dup(const ASN1_ITEM *it, void *x);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x);
+OPENSSL_EXPORT int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in);
+
+OPENSSL_EXPORT void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x);
+OPENSSL_EXPORT int ASN1_UTCTIME_print(BIO *fp, const ASN1_UTCTIME *a);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_print(BIO *fp, const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT int ASN1_TIME_print(BIO *fp, const ASN1_TIME *a);
+OPENSSL_EXPORT int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v);
+OPENSSL_EXPORT int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags);
+OPENSSL_EXPORT const char *ASN1_tag2str(int tag);
+
+/* Used to load and write netscape format cert */
+
+OPENSSL_EXPORT void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_OCTET_STRING **oct);
+
+OPENSSL_EXPORT void ASN1_STRING_set_default_mask(unsigned long mask);
+OPENSSL_EXPORT int ASN1_STRING_set_default_mask_asc(const char *p);
+OPENSSL_EXPORT unsigned long ASN1_STRING_get_default_mask(void);
+OPENSSL_EXPORT int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask);
+OPENSSL_EXPORT int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask, long minsize, long maxsize);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, int inlen, int inform, int nid);
+OPENSSL_EXPORT ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid);
+OPENSSL_EXPORT int ASN1_STRING_TABLE_add(int, long, long, unsigned long, unsigned long);
+OPENSSL_EXPORT void ASN1_STRING_TABLE_cleanup(void);
+
+/* ASN1 template functions */
+
+/* Old API compatible functions */
+OPENSSL_EXPORT ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it);
+OPENSSL_EXPORT void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it);
+OPENSSL_EXPORT ASN1_VALUE * ASN1_item_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf);
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf);
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ASN1_OBJECT, ASN1_OBJECT_free)
+BORINGSSL_MAKE_DELETER(ASN1_STRING, ASN1_STRING_free)
+BORINGSSL_MAKE_DELETER(ASN1_TYPE, ASN1_TYPE_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+
+#endif
+
+#define ASN1_R_ASN1_LENGTH_MISMATCH 100
+#define ASN1_R_AUX_ERROR 101
+#define ASN1_R_BAD_GET_ASN1_OBJECT_CALL 102
+#define ASN1_R_BAD_OBJECT_HEADER 103
+#define ASN1_R_BMPSTRING_IS_WRONG_LENGTH 104
+#define ASN1_R_BN_LIB 105
+#define ASN1_R_BOOLEAN_IS_WRONG_LENGTH 106
+#define ASN1_R_BUFFER_TOO_SMALL 107
+#define ASN1_R_CONTEXT_NOT_INITIALISED 108
+#define ASN1_R_DECODE_ERROR 109
+#define ASN1_R_DEPTH_EXCEEDED 110
+#define ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED 111
+#define ASN1_R_ENCODE_ERROR 112
+#define ASN1_R_ERROR_GETTING_TIME 113
+#define ASN1_R_EXPECTING_AN_ASN1_SEQUENCE 114
+#define ASN1_R_EXPECTING_AN_INTEGER 115
+#define ASN1_R_EXPECTING_AN_OBJECT 116
+#define ASN1_R_EXPECTING_A_BOOLEAN 117
+#define ASN1_R_EXPECTING_A_TIME 118
+#define ASN1_R_EXPLICIT_LENGTH_MISMATCH 119
+#define ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED 120
+#define ASN1_R_FIELD_MISSING 121
+#define ASN1_R_FIRST_NUM_TOO_LARGE 122
+#define ASN1_R_HEADER_TOO_LONG 123
+#define ASN1_R_ILLEGAL_BITSTRING_FORMAT 124
+#define ASN1_R_ILLEGAL_BOOLEAN 125
+#define ASN1_R_ILLEGAL_CHARACTERS 126
+#define ASN1_R_ILLEGAL_FORMAT 127
+#define ASN1_R_ILLEGAL_HEX 128
+#define ASN1_R_ILLEGAL_IMPLICIT_TAG 129
+#define ASN1_R_ILLEGAL_INTEGER 130
+#define ASN1_R_ILLEGAL_NESTED_TAGGING 131
+#define ASN1_R_ILLEGAL_NULL 132
+#define ASN1_R_ILLEGAL_NULL_VALUE 133
+#define ASN1_R_ILLEGAL_OBJECT 134
+#define ASN1_R_ILLEGAL_OPTIONAL_ANY 135
+#define ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE 136
+#define ASN1_R_ILLEGAL_TAGGED_ANY 137
+#define ASN1_R_ILLEGAL_TIME_VALUE 138
+#define ASN1_R_INTEGER_NOT_ASCII_FORMAT 139
+#define ASN1_R_INTEGER_TOO_LARGE_FOR_LONG 140
+#define ASN1_R_INVALID_BIT_STRING_BITS_LEFT 141
+#define ASN1_R_INVALID_BMPSTRING 142
+#define ASN1_R_INVALID_DIGIT 143
+#define ASN1_R_INVALID_MODIFIER 144
+#define ASN1_R_INVALID_NUMBER 145
+#define ASN1_R_INVALID_OBJECT_ENCODING 146
+#define ASN1_R_INVALID_SEPARATOR 147
+#define ASN1_R_INVALID_TIME_FORMAT 148
+#define ASN1_R_INVALID_UNIVERSALSTRING 149
+#define ASN1_R_INVALID_UTF8STRING 150
+#define ASN1_R_LIST_ERROR 151
+#define ASN1_R_MISSING_ASN1_EOS 152
+#define ASN1_R_MISSING_EOC 153
+#define ASN1_R_MISSING_SECOND_NUMBER 154
+#define ASN1_R_MISSING_VALUE 155
+#define ASN1_R_MSTRING_NOT_UNIVERSAL 156
+#define ASN1_R_MSTRING_WRONG_TAG 157
+#define ASN1_R_NESTED_ASN1_ERROR 158
+#define ASN1_R_NESTED_ASN1_STRING 159
+#define ASN1_R_NON_HEX_CHARACTERS 160
+#define ASN1_R_NOT_ASCII_FORMAT 161
+#define ASN1_R_NOT_ENOUGH_DATA 162
+#define ASN1_R_NO_MATCHING_CHOICE_TYPE 163
+#define ASN1_R_NULL_IS_WRONG_LENGTH 164
+#define ASN1_R_OBJECT_NOT_ASCII_FORMAT 165
+#define ASN1_R_ODD_NUMBER_OF_CHARS 166
+#define ASN1_R_SECOND_NUMBER_TOO_LARGE 167
+#define ASN1_R_SEQUENCE_LENGTH_MISMATCH 168
+#define ASN1_R_SEQUENCE_NOT_CONSTRUCTED 169
+#define ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG 170
+#define ASN1_R_SHORT_LINE 171
+#define ASN1_R_STREAMING_NOT_SUPPORTED 172
+#define ASN1_R_STRING_TOO_LONG 173
+#define ASN1_R_STRING_TOO_SHORT 174
+#define ASN1_R_TAG_VALUE_TOO_HIGH 175
+#define ASN1_R_TIME_NOT_ASCII_FORMAT 176
+#define ASN1_R_TOO_LONG 177
+#define ASN1_R_TYPE_NOT_CONSTRUCTED 178
+#define ASN1_R_TYPE_NOT_PRIMITIVE 179
+#define ASN1_R_UNEXPECTED_EOC 180
+#define ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH 181
+#define ASN1_R_UNKNOWN_FORMAT 182
+#define ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM 183
+#define ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM 184
+#define ASN1_R_UNKNOWN_TAG 185
+#define ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE 186
+#define ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE 187
+#define ASN1_R_UNSUPPORTED_TYPE 188
+#define ASN1_R_WRONG_PUBLIC_KEY_TYPE 189
+#define ASN1_R_WRONG_TAG 190
+#define ASN1_R_WRONG_TYPE 191
+#define ASN1_R_NESTED_TOO_DEEP 192
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.grpc_back
new file mode 100644
index 0000000..6ae831b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1.h.grpc_back	
@@ -0,0 +1,911 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_ASN1_H
+#define HEADER_ASN1_H
+
+#include <openssl/base.h>
+
+#include <time.h>
+
+#include <openssl/bio.h>
+#include <openssl/stack.h>
+
+#include <openssl/bn.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library.
+ *
+ * This header is part of OpenSSL's ASN.1 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. Use
+ * the new |CBS| and |CBB| library in <openssl/bytestring.h> instead. */
+
+
+#define V_ASN1_UNIVERSAL		0x00
+#define	V_ASN1_APPLICATION		0x40
+#define V_ASN1_CONTEXT_SPECIFIC		0x80
+#define V_ASN1_PRIVATE			0xc0
+
+#define V_ASN1_CONSTRUCTED		0x20
+#define V_ASN1_PRIMITIVE_TAG		0x1f
+
+#define V_ASN1_APP_CHOOSE		-2	/* let the recipient choose */
+#define V_ASN1_OTHER			-3	/* used in ASN1_TYPE */
+#define V_ASN1_ANY			-4	/* used in ASN1 template code */
+
+#define V_ASN1_NEG			0x100	/* negative flag */
+/* No supported universal tags may exceed this value, to avoid ambiguity with
+ * V_ASN1_NEG. */
+#define V_ASN1_MAX_UNIVERSAL		0xff
+
+#define V_ASN1_UNDEF			-1
+#define V_ASN1_EOC			0
+#define V_ASN1_BOOLEAN			1	/**/
+#define V_ASN1_INTEGER			2
+#define V_ASN1_NEG_INTEGER		(2 | V_ASN1_NEG)
+#define V_ASN1_BIT_STRING		3
+#define V_ASN1_OCTET_STRING		4
+#define V_ASN1_NULL			5
+#define V_ASN1_OBJECT			6
+#define V_ASN1_OBJECT_DESCRIPTOR	7
+#define V_ASN1_EXTERNAL			8
+#define V_ASN1_REAL			9
+#define V_ASN1_ENUMERATED		10
+#define V_ASN1_NEG_ENUMERATED		(10 | V_ASN1_NEG)
+#define V_ASN1_UTF8STRING		12
+#define V_ASN1_SEQUENCE			16
+#define V_ASN1_SET			17
+#define V_ASN1_NUMERICSTRING		18	/**/
+#define V_ASN1_PRINTABLESTRING		19
+#define V_ASN1_T61STRING		20
+#define V_ASN1_TELETEXSTRING		20	/* alias */
+#define V_ASN1_VIDEOTEXSTRING		21	/**/
+#define V_ASN1_IA5STRING		22
+#define V_ASN1_UTCTIME			23
+#define V_ASN1_GENERALIZEDTIME		24	/**/
+#define V_ASN1_GRAPHICSTRING		25	/**/
+#define V_ASN1_ISO64STRING		26	/**/
+#define V_ASN1_VISIBLESTRING		26	/* alias */
+#define V_ASN1_GENERALSTRING		27	/**/
+#define V_ASN1_UNIVERSALSTRING		28	/**/
+#define V_ASN1_BMPSTRING		30
+
+/* For use with d2i_ASN1_type_bytes() */
+#define B_ASN1_NUMERICSTRING	0x0001
+#define B_ASN1_PRINTABLESTRING	0x0002
+#define B_ASN1_T61STRING	0x0004
+#define B_ASN1_TELETEXSTRING	0x0004
+#define B_ASN1_VIDEOTEXSTRING	0x0008
+#define B_ASN1_IA5STRING	0x0010
+#define B_ASN1_GRAPHICSTRING	0x0020
+#define B_ASN1_ISO64STRING	0x0040
+#define B_ASN1_VISIBLESTRING	0x0040
+#define B_ASN1_GENERALSTRING	0x0080
+#define B_ASN1_UNIVERSALSTRING	0x0100
+#define B_ASN1_OCTET_STRING	0x0200
+#define B_ASN1_BIT_STRING	0x0400
+#define B_ASN1_BMPSTRING	0x0800
+#define B_ASN1_UNKNOWN		0x1000
+#define B_ASN1_UTF8STRING	0x2000
+#define B_ASN1_UTCTIME		0x4000
+#define B_ASN1_GENERALIZEDTIME	0x8000
+#define B_ASN1_SEQUENCE		0x10000
+
+/* For use with ASN1_mbstring_copy() */
+#define MBSTRING_FLAG		0x1000
+#define MBSTRING_UTF8		(MBSTRING_FLAG)
+/* |MBSTRING_ASC| refers to Latin-1, not ASCII. It is used with TeletexString
+ * which, in turn, is treated as Latin-1 rather than T.61 by OpenSSL and most
+ * other software. */
+#define MBSTRING_ASC		(MBSTRING_FLAG|1)
+#define MBSTRING_BMP		(MBSTRING_FLAG|2)
+#define MBSTRING_UNIV		(MBSTRING_FLAG|4)
+
+#define DECLARE_ASN1_SET_OF(type) /* filled in by mkstack.pl */
+#define IMPLEMENT_ASN1_SET_OF(type) /* nothing, no longer needed */
+
+/* These are used internally in the ASN1_OBJECT to keep track of
+ * whether the names and data need to be free()ed */
+#define ASN1_OBJECT_FLAG_DYNAMIC	 0x01	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04	/* internal use */
+#define ASN1_OBJECT_FLAG_DYNAMIC_DATA 	 0x08	/* internal use */
+struct asn1_object_st
+	{
+	const char *sn,*ln;
+	int nid;
+	int length;
+	const unsigned char *data;	/* data remains const after init */
+	int flags;	/* Should we free this one */
+	};
+
+DEFINE_STACK_OF(ASN1_OBJECT)
+
+#define ASN1_STRING_FLAG_BITS_LEFT 0x08 /* Set if 0x07 has bits left value */
+/* This indicates that the ASN1_STRING is not a real value but just a place
+ * holder for the location where indefinite length constructed data should
+ * be inserted in the memory buffer 
+ */
+#define ASN1_STRING_FLAG_NDEF 0x010 
+
+/* This flag is used by ASN1 code to indicate an ASN1_STRING is an MSTRING
+ * type.
+ */
+#define ASN1_STRING_FLAG_MSTRING 0x040 
+/* This is the base type that holds just about everything :-) */
+struct asn1_string_st
+	{
+	int length;
+	int type;
+	unsigned char *data;
+	/* The value of the following field depends on the type being
+	 * held.  It is mostly being used for BIT_STRING so if the
+	 * input data has a non-zero 'unused bits' value, it will be
+	 * handled correctly */
+	long flags;
+	};
+
+/* ASN1_ENCODING structure: this is used to save the received
+ * encoding of an ASN1 type. This is useful to get round
+ * problems with invalid encodings which can break signatures.
+ */
+
+typedef struct ASN1_ENCODING_st
+	{
+	unsigned char *enc;	/* DER encoding */
+	long len;		/* Length of encoding */
+	int modified;		/* set to 1 if 'enc' is invalid */
+	/* alias_only is zero if |enc| owns the buffer that it points to
+	 * (although |enc| may still be NULL). If one, |enc| points into a
+	 * buffer that is owned elsewhere. */
+	unsigned alias_only:1;
+	/* alias_only_on_next_parse is one iff the next parsing operation
+	 * should avoid taking a copy of the input and rather set
+	 * |alias_only|. */
+	unsigned alias_only_on_next_parse:1;
+	} ASN1_ENCODING;
+
+#define STABLE_FLAGS_MALLOC	0x01
+#define STABLE_NO_MASK		0x02
+#define DIRSTRING_TYPE	\
+ (B_ASN1_PRINTABLESTRING|B_ASN1_T61STRING|B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)
+#define PKCS9STRING_TYPE (DIRSTRING_TYPE|B_ASN1_IA5STRING)
+
+typedef struct asn1_string_table_st {
+	int nid;
+	long minsize;
+	long maxsize;
+	unsigned long mask;
+	unsigned long flags;
+} ASN1_STRING_TABLE;
+
+/* size limits: this stuff is taken straight from RFC2459 */
+
+#define ub_name				32768
+#define ub_common_name			64
+#define ub_locality_name		128
+#define ub_state_name			128
+#define ub_organization_name		64
+#define ub_organization_unit_name	64
+#define ub_title			64
+#define ub_email_address		128
+
+/* Declarations for template structures: for full definitions
+ * see asn1t.h
+ */
+typedef struct ASN1_TEMPLATE_st ASN1_TEMPLATE;
+typedef struct ASN1_TLC_st ASN1_TLC;
+/* This is just an opaque pointer */
+typedef struct ASN1_VALUE_st ASN1_VALUE;
+
+/* Declare ASN1 functions: the implement macro in in asn1t.h */
+
+#define DECLARE_ASN1_FUNCTIONS(type) DECLARE_ASN1_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS(type) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, type)
+
+#define DECLARE_ASN1_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, name, name)
+
+#define DECLARE_ASN1_FUNCTIONS_fname(type, itname, name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(itname)
+
+#define	DECLARE_ASN1_ENCODE_FUNCTIONS_const(type, name) \
+	OPENSSL_EXPORT type *d2i_##name(type **a, const unsigned char **in, long len); \
+	OPENSSL_EXPORT int i2d_##name(const type *a, unsigned char **out); \
+	DECLARE_ASN1_ITEM(name)
+
+#define	DECLARE_ASN1_NDEF_FUNCTION(name) \
+	OPENSSL_EXPORT int i2d_##name##_NDEF(name *a, unsigned char **out);
+
+#define DECLARE_ASN1_FUNCTIONS_const(name) \
+	DECLARE_ASN1_ALLOC_FUNCTIONS(name) \
+	DECLARE_ASN1_ENCODE_FUNCTIONS_const(name, name)
+
+#define DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \
+	OPENSSL_EXPORT type *name##_new(void); \
+	OPENSSL_EXPORT void name##_free(type *a);
+
+#define DECLARE_ASN1_PRINT_FUNCTION(stname) \
+	DECLARE_ASN1_PRINT_FUNCTION_fname(stname, stname)
+
+#define DECLARE_ASN1_PRINT_FUNCTION_fname(stname, fname) \
+	OPENSSL_EXPORT int fname##_print_ctx(BIO *out, stname *x, int indent, \
+					 const ASN1_PCTX *pctx);
+
+typedef void *d2i_of_void(void **, const unsigned char **, long);
+typedef int i2d_of_void(const void *, unsigned char **);
+
+/* The following macros and typedefs allow an ASN1_ITEM
+ * to be embedded in a structure and referenced. Since
+ * the ASN1_ITEM pointers need to be globally accessible
+ * (possibly from shared libraries) they may exist in
+ * different forms. On platforms that support it the
+ * ASN1_ITEM structure itself will be globally exported.
+ * Other platforms will export a function that returns
+ * an ASN1_ITEM pointer.
+ *
+ * To handle both cases transparently the macros below
+ * should be used instead of hard coding an ASN1_ITEM
+ * pointer in a structure.
+ *
+ * The structure will look like this:
+ *
+ * typedef struct SOMETHING_st {
+ *      ...
+ *      ASN1_ITEM_EXP *iptr;
+ *      ...
+ * } SOMETHING; 
+ *
+ * It would be initialised as e.g.:
+ *
+ * SOMETHING somevar = {...,ASN1_ITEM_ref(X509),...};
+ *
+ * and the actual pointer extracted with:
+ *
+ * const ASN1_ITEM *it = ASN1_ITEM_ptr(somevar.iptr);
+ *
+ * Finally an ASN1_ITEM pointer can be extracted from an
+ * appropriate reference with: ASN1_ITEM_rptr(X509). This
+ * would be used when a function takes an ASN1_ITEM * argument.
+ *
+ */
+
+/* ASN1_ITEM pointer exported type */
+typedef const ASN1_ITEM ASN1_ITEM_EXP;
+
+/* Macro to obtain ASN1_ITEM pointer from exported type */
+#define ASN1_ITEM_ptr(iptr) (iptr)
+
+/* Macro to include ASN1_ITEM pointer from base type */
+#define ASN1_ITEM_ref(iptr) (&(iptr##_it))
+
+#define ASN1_ITEM_rptr(ref) (&(ref##_it))
+
+#define DECLARE_ASN1_ITEM(name) \
+	extern OPENSSL_EXPORT const ASN1_ITEM name##_it;
+
+/* Parameters used by ASN1_STRING_print_ex() */
+
+/* These determine which characters to escape:
+ * RFC2253 special characters, control characters and
+ * MSB set characters
+ */
+
+#define ASN1_STRFLGS_ESC_2253		1
+#define ASN1_STRFLGS_ESC_CTRL		2
+#define ASN1_STRFLGS_ESC_MSB		4
+
+
+/* This flag determines how we do escaping: normally
+ * RC2253 backslash only, set this to use backslash and
+ * quote.
+ */
+
+#define ASN1_STRFLGS_ESC_QUOTE		8
+
+
+/* These three flags are internal use only. */
+
+/* Character is a valid PrintableString character */
+#define CHARTYPE_PRINTABLESTRING	0x10
+/* Character needs escaping if it is the first character */
+#define CHARTYPE_FIRST_ESC_2253		0x20
+/* Character needs escaping if it is the last character */
+#define CHARTYPE_LAST_ESC_2253		0x40
+
+/* NB the internal flags are safely reused below by flags
+ * handled at the top level.
+ */
+
+/* If this is set we convert all character strings
+ * to UTF8 first 
+ */
+
+#define ASN1_STRFLGS_UTF8_CONVERT	0x10
+
+/* If this is set we don't attempt to interpret content:
+ * just assume all strings are 1 byte per character. This
+ * will produce some pretty odd looking output!
+ */
+
+#define ASN1_STRFLGS_IGNORE_TYPE	0x20
+
+/* If this is set we include the string type in the output */
+#define ASN1_STRFLGS_SHOW_TYPE		0x40
+
+/* This determines which strings to display and which to
+ * 'dump' (hex dump of content octets or DER encoding). We can
+ * only dump non character strings or everything. If we
+ * don't dump 'unknown' they are interpreted as character
+ * strings with 1 octet per character and are subject to
+ * the usual escaping options.
+ */
+
+#define ASN1_STRFLGS_DUMP_ALL		0x80
+#define ASN1_STRFLGS_DUMP_UNKNOWN	0x100
+
+/* These determine what 'dumping' does, we can dump the
+ * content octets or the DER encoding: both use the
+ * RFC2253 #XXXXX notation.
+ */
+
+#define ASN1_STRFLGS_DUMP_DER		0x200
+
+/* All the string flags consistent with RFC2253,
+ * escaping control characters isn't essential in
+ * RFC2253 but it is advisable anyway.
+ */
+
+#define ASN1_STRFLGS_RFC2253	(ASN1_STRFLGS_ESC_2253 | \
+				ASN1_STRFLGS_ESC_CTRL | \
+				ASN1_STRFLGS_ESC_MSB | \
+				ASN1_STRFLGS_UTF8_CONVERT | \
+				ASN1_STRFLGS_DUMP_UNKNOWN | \
+				ASN1_STRFLGS_DUMP_DER)
+
+DEFINE_STACK_OF(ASN1_INTEGER)
+DECLARE_ASN1_SET_OF(ASN1_INTEGER)
+
+struct asn1_type_st
+	{
+	int type;
+	union	{
+		char *ptr;
+		ASN1_BOOLEAN		boolean;
+		ASN1_STRING *		asn1_string;
+		ASN1_OBJECT *		object;
+		ASN1_INTEGER *		integer;
+		ASN1_ENUMERATED *	enumerated;
+		ASN1_BIT_STRING *	bit_string;
+		ASN1_OCTET_STRING *	octet_string;
+		ASN1_PRINTABLESTRING *	printablestring;
+		ASN1_T61STRING *	t61string;
+		ASN1_IA5STRING *	ia5string;
+		ASN1_GENERALSTRING *	generalstring;
+		ASN1_BMPSTRING *	bmpstring;
+		ASN1_UNIVERSALSTRING *	universalstring;
+		ASN1_UTCTIME *		utctime;
+		ASN1_GENERALIZEDTIME *	generalizedtime;
+		ASN1_VISIBLESTRING *	visiblestring;
+		ASN1_UTF8STRING *	utf8string;
+		/* set and sequence are left complete and still
+		 * contain the set or sequence bytes */
+		ASN1_STRING *		set;
+		ASN1_STRING *		sequence;
+		ASN1_VALUE *		asn1_value;
+		} value;
+    };
+
+DEFINE_STACK_OF(ASN1_TYPE)
+DECLARE_ASN1_SET_OF(ASN1_TYPE)
+
+typedef STACK_OF(ASN1_TYPE) ASN1_SEQUENCE_ANY;
+
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SET_ANY)
+
+struct X509_algor_st
+       {
+       ASN1_OBJECT *algorithm;
+       ASN1_TYPE *parameter;
+       } /* X509_ALGOR */;
+
+DECLARE_ASN1_FUNCTIONS(X509_ALGOR)
+
+/* This is used to contain a list of bit names */
+typedef struct BIT_STRING_BITNAME_st {
+	int bitnum;
+	const char *lname;
+	const char *sname;
+} BIT_STRING_BITNAME;
+
+
+#define M_ASN1_STRING_length(x)	((x)->length)
+#define M_ASN1_STRING_length_set(x, n)	((x)->length = (n))
+#define M_ASN1_STRING_type(x)	((x)->type)
+#define M_ASN1_STRING_data(x)	((x)->data)
+
+/* Macros for string operations */
+#define M_ASN1_BIT_STRING_new()	(ASN1_BIT_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_BIT_STRING)
+#define M_ASN1_BIT_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_dup(a) (ASN1_BIT_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_BIT_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_BIT_STRING_set(a,b,c) ASN1_STRING_set((ASN1_STRING *)a,b,c)
+
+#define M_ASN1_INTEGER_new()	(ASN1_INTEGER *)\
+		ASN1_STRING_type_new(V_ASN1_INTEGER)
+#define M_ASN1_INTEGER_free(a)		ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_INTEGER_dup(a) (ASN1_INTEGER *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_INTEGER_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_ENUMERATED_new()	(ASN1_ENUMERATED *)\
+		ASN1_STRING_type_new(V_ASN1_ENUMERATED)
+#define M_ASN1_ENUMERATED_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_dup(a) (ASN1_ENUMERATED *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_ENUMERATED_cmp(a,b)	ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+
+#define M_ASN1_OCTET_STRING_new()	(ASN1_OCTET_STRING *)\
+		ASN1_STRING_type_new(V_ASN1_OCTET_STRING)
+#define M_ASN1_OCTET_STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_dup(a) (ASN1_OCTET_STRING *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+#define M_ASN1_OCTET_STRING_cmp(a,b) ASN1_STRING_cmp(\
+		(const ASN1_STRING *)a,(const ASN1_STRING *)b)
+#define M_ASN1_OCTET_STRING_set(a,b,c)	ASN1_STRING_set((ASN1_STRING *)a,b,c)
+#define M_ASN1_OCTET_STRING_print(a,b)	ASN1_STRING_print(a,(ASN1_STRING *)b)
+
+#define B_ASN1_TIME \
+			B_ASN1_UTCTIME | \
+			B_ASN1_GENERALIZEDTIME
+
+#define B_ASN1_PRINTABLE \
+			B_ASN1_NUMERICSTRING| \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_T61STRING| \
+			B_ASN1_IA5STRING| \
+			B_ASN1_BIT_STRING| \
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING|\
+			B_ASN1_SEQUENCE|\
+			B_ASN1_UNKNOWN
+
+#define B_ASN1_DIRECTORYSTRING \
+			B_ASN1_PRINTABLESTRING| \
+			B_ASN1_TELETEXSTRING|\
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UNIVERSALSTRING|\
+			B_ASN1_UTF8STRING
+
+#define B_ASN1_DISPLAYTEXT \
+			B_ASN1_IA5STRING| \
+			B_ASN1_VISIBLESTRING| \
+			B_ASN1_BMPSTRING|\
+			B_ASN1_UTF8STRING
+
+#define M_ASN1_PRINTABLE_new()	ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_PRINTABLE_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DIRECTORYSTRING_new() ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_DIRECTORYSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_DISPLAYTEXT_new() ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_DISPLAYTEXT_free(a) ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_PRINTABLESTRING_new() (ASN1_PRINTABLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_PRINTABLESTRING)
+#define M_ASN1_PRINTABLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_T61STRING_new()	(ASN1_T61STRING *)\
+		ASN1_STRING_type_new(V_ASN1_T61STRING)
+#define M_ASN1_T61STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_IA5STRING_new()	(ASN1_IA5STRING *)\
+		ASN1_STRING_type_new(V_ASN1_IA5STRING)
+#define M_ASN1_IA5STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_IA5STRING_dup(a)	\
+		(ASN1_IA5STRING *)ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_UTCTIME_new()	(ASN1_UTCTIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_UTCTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_UTCTIME_dup(a) (ASN1_UTCTIME *)\
+		ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALIZEDTIME_new()	(ASN1_GENERALIZEDTIME *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALIZEDTIME)
+#define M_ASN1_GENERALIZEDTIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_GENERALIZEDTIME_dup(a) (ASN1_GENERALIZEDTIME *)ASN1_STRING_dup(\
+	(const ASN1_STRING *)a)
+
+#define M_ASN1_TIME_new()	(ASN1_TIME *)\
+		ASN1_STRING_type_new(V_ASN1_UTCTIME)
+#define M_ASN1_TIME_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+#define M_ASN1_TIME_dup(a) (ASN1_TIME *)\
+	ASN1_STRING_dup((const ASN1_STRING *)a)
+
+#define M_ASN1_GENERALSTRING_new()	(ASN1_GENERALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_GENERALSTRING)
+#define M_ASN1_GENERALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UNIVERSALSTRING_new()	(ASN1_UNIVERSALSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_UNIVERSALSTRING)
+#define M_ASN1_UNIVERSALSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_BMPSTRING_new()	(ASN1_BMPSTRING *)\
+		ASN1_STRING_type_new(V_ASN1_BMPSTRING)
+#define M_ASN1_BMPSTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_VISIBLESTRING_new()	(ASN1_VISIBLESTRING *)\
+		ASN1_STRING_type_new(V_ASN1_VISIBLESTRING)
+#define M_ASN1_VISIBLESTRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+#define M_ASN1_UTF8STRING_new()	(ASN1_UTF8STRING *)\
+		ASN1_STRING_type_new(V_ASN1_UTF8STRING)
+#define M_ASN1_UTF8STRING_free(a)	ASN1_STRING_free((ASN1_STRING *)a)
+
+DECLARE_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
+
+OPENSSL_EXPORT int ASN1_TYPE_get(ASN1_TYPE *a);
+OPENSSL_EXPORT void ASN1_TYPE_set(ASN1_TYPE *a, int type, void *value);
+OPENSSL_EXPORT int ASN1_TYPE_set1(ASN1_TYPE *a, int type, const void *value);
+OPENSSL_EXPORT int ASN1_TYPE_cmp(const ASN1_TYPE *a, const ASN1_TYPE *b);
+
+OPENSSL_EXPORT ASN1_OBJECT *	ASN1_OBJECT_new(void );
+OPENSSL_EXPORT void		ASN1_OBJECT_free(ASN1_OBJECT *a);
+OPENSSL_EXPORT int		i2d_ASN1_OBJECT(ASN1_OBJECT *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_OBJECT *	c2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+OPENSSL_EXPORT ASN1_OBJECT *	d2i_ASN1_OBJECT(ASN1_OBJECT **a,const unsigned char **pp,
+						long length);
+
+DECLARE_ASN1_ITEM(ASN1_OBJECT)
+
+DECLARE_ASN1_SET_OF(ASN1_OBJECT)
+
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_new(void);
+OPENSSL_EXPORT void		ASN1_STRING_free(ASN1_STRING *a);
+OPENSSL_EXPORT int		ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_dup(const ASN1_STRING *a);
+OPENSSL_EXPORT ASN1_STRING *	ASN1_STRING_type_new(int type );
+OPENSSL_EXPORT int 		ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b);
+  /* Since this is used to store all sorts of things, via macros, for now, make
+     its data void * */
+OPENSSL_EXPORT int 		ASN1_STRING_set(ASN1_STRING *str, const void *data, int len);
+OPENSSL_EXPORT void		ASN1_STRING_set0(ASN1_STRING *str, void *data, int len);
+OPENSSL_EXPORT int ASN1_STRING_length(const ASN1_STRING *x);
+OPENSSL_EXPORT void ASN1_STRING_length_set(ASN1_STRING *x, int n);
+OPENSSL_EXPORT int ASN1_STRING_type(ASN1_STRING *x);
+OPENSSL_EXPORT unsigned char * ASN1_STRING_data(ASN1_STRING *x);
+OPENSSL_EXPORT const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_BIT_STRING)
+OPENSSL_EXPORT int		i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set(ASN1_BIT_STRING *a, unsigned char *d, int length );
+OPENSSL_EXPORT int		ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value);
+OPENSSL_EXPORT int		ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n);
+OPENSSL_EXPORT int            ASN1_BIT_STRING_check(ASN1_BIT_STRING *a, unsigned char *flags, int flags_len);
+
+OPENSSL_EXPORT int		i2d_ASN1_BOOLEAN(int a,unsigned char **pp);
+OPENSSL_EXPORT int 		d2i_ASN1_BOOLEAN(int *a,const unsigned char **pp,long length);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_INTEGER)
+OPENSSL_EXPORT int		i2c_ASN1_INTEGER(ASN1_INTEGER *a,unsigned char **pp);
+OPENSSL_EXPORT ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a,const unsigned char **pp, long length);
+OPENSSL_EXPORT ASN1_INTEGER *	ASN1_INTEGER_dup(const ASN1_INTEGER *x);
+OPENSSL_EXPORT int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_ENUMERATED)
+
+OPENSSL_EXPORT int ASN1_UTCTIME_check(const ASN1_UTCTIME *a);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t);
+#if 0
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s);
+#endif
+
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,time_t t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str);
+OPENSSL_EXPORT int ASN1_TIME_diff(int *pday, int *psec, const ASN1_TIME *from, const ASN1_TIME *to);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_OCTET_STRING)
+OPENSSL_EXPORT ASN1_OCTET_STRING *	ASN1_OCTET_STRING_dup(const ASN1_OCTET_STRING *a);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_cmp(const ASN1_OCTET_STRING *a, const ASN1_OCTET_STRING *b);
+OPENSSL_EXPORT int 	ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *str, const unsigned char *data, int len);
+
+DECLARE_ASN1_FUNCTIONS(ASN1_VISIBLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UNIVERSALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTF8STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_NULL)
+DECLARE_ASN1_FUNCTIONS(ASN1_BMPSTRING)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, ASN1_PRINTABLE)
+
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DIRECTORYSTRING)
+DECLARE_ASN1_FUNCTIONS_name(ASN1_STRING, DISPLAYTEXT)
+DECLARE_ASN1_FUNCTIONS(ASN1_PRINTABLESTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_T61STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_IA5STRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALSTRING)
+DECLARE_ASN1_FUNCTIONS(ASN1_UTCTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_GENERALIZEDTIME)
+DECLARE_ASN1_FUNCTIONS(ASN1_TIME)
+
+DECLARE_ASN1_ITEM(ASN1_OCTET_STRING_NDEF)
+
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s,time_t t);
+OPENSSL_EXPORT ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s,time_t t, int offset_day, long offset_sec);
+OPENSSL_EXPORT int ASN1_TIME_check(ASN1_TIME *t);
+OPENSSL_EXPORT ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out);
+OPENSSL_EXPORT int ASN1_TIME_set_string(ASN1_TIME *s, const char *str);
+
+OPENSSL_EXPORT int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a);
+OPENSSL_EXPORT int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a);
+OPENSSL_EXPORT int i2a_ASN1_OBJECT(BIO *bp,ASN1_OBJECT *a);
+OPENSSL_EXPORT int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type);
+OPENSSL_EXPORT int i2t_ASN1_OBJECT(char *buf,int buf_len,ASN1_OBJECT *a);
+
+OPENSSL_EXPORT ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data,int len, const char *sn, const char *ln);
+
+OPENSSL_EXPORT int ASN1_INTEGER_set(ASN1_INTEGER *a, long v);
+OPENSSL_EXPORT int ASN1_INTEGER_set_uint64(ASN1_INTEGER *out, uint64_t v);
+OPENSSL_EXPORT long ASN1_INTEGER_get(const ASN1_INTEGER *a);
+OPENSSL_EXPORT ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai,BIGNUM *bn);
+
+OPENSSL_EXPORT int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v);
+OPENSSL_EXPORT long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a);
+OPENSSL_EXPORT ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai);
+OPENSSL_EXPORT BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai,BIGNUM *bn);
+
+/* General */
+/* given a string, return the correct type, max is the maximum length */
+OPENSSL_EXPORT int ASN1_PRINTABLE_type(const unsigned char *s, int max);
+
+OPENSSL_EXPORT unsigned long ASN1_tag2bit(int tag);
+
+/* SPECIALS */
+OPENSSL_EXPORT int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag, int *pclass, long omax);
+OPENSSL_EXPORT void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag, int xclass);
+OPENSSL_EXPORT int ASN1_put_eoc(unsigned char **pp);
+OPENSSL_EXPORT int ASN1_object_size(int constructed, int length, int tag);
+
+OPENSSL_EXPORT void *ASN1_item_dup(const ASN1_ITEM *it, void *x);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x);
+OPENSSL_EXPORT int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in);
+
+OPENSSL_EXPORT void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x);
+OPENSSL_EXPORT int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x);
+OPENSSL_EXPORT int ASN1_UTCTIME_print(BIO *fp, const ASN1_UTCTIME *a);
+OPENSSL_EXPORT int ASN1_GENERALIZEDTIME_print(BIO *fp, const ASN1_GENERALIZEDTIME *a);
+OPENSSL_EXPORT int ASN1_TIME_print(BIO *fp, const ASN1_TIME *a);
+OPENSSL_EXPORT int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v);
+OPENSSL_EXPORT int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags);
+OPENSSL_EXPORT const char *ASN1_tag2str(int tag);
+
+/* Used to load and write netscape format cert */
+
+OPENSSL_EXPORT void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_OCTET_STRING **oct);
+
+OPENSSL_EXPORT void ASN1_STRING_set_default_mask(unsigned long mask);
+OPENSSL_EXPORT int ASN1_STRING_set_default_mask_asc(const char *p);
+OPENSSL_EXPORT unsigned long ASN1_STRING_get_default_mask(void);
+OPENSSL_EXPORT int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask);
+OPENSSL_EXPORT int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len, int inform, unsigned long mask, long minsize, long maxsize);
+
+OPENSSL_EXPORT ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, int inlen, int inform, int nid);
+OPENSSL_EXPORT ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid);
+OPENSSL_EXPORT int ASN1_STRING_TABLE_add(int, long, long, unsigned long, unsigned long);
+OPENSSL_EXPORT void ASN1_STRING_TABLE_cleanup(void);
+
+/* ASN1 template functions */
+
+/* Old API compatible functions */
+OPENSSL_EXPORT ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it);
+OPENSSL_EXPORT void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it);
+OPENSSL_EXPORT ASN1_VALUE * ASN1_item_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+OPENSSL_EXPORT int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it);
+
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf);
+OPENSSL_EXPORT ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf);
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ASN1_OBJECT, ASN1_OBJECT_free)
+BORINGSSL_MAKE_DELETER(ASN1_STRING, ASN1_STRING_free)
+BORINGSSL_MAKE_DELETER(ASN1_TYPE, ASN1_TYPE_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+
+#endif
+
+#define ASN1_R_ASN1_LENGTH_MISMATCH 100
+#define ASN1_R_AUX_ERROR 101
+#define ASN1_R_BAD_GET_ASN1_OBJECT_CALL 102
+#define ASN1_R_BAD_OBJECT_HEADER 103
+#define ASN1_R_BMPSTRING_IS_WRONG_LENGTH 104
+#define ASN1_R_BN_LIB 105
+#define ASN1_R_BOOLEAN_IS_WRONG_LENGTH 106
+#define ASN1_R_BUFFER_TOO_SMALL 107
+#define ASN1_R_CONTEXT_NOT_INITIALISED 108
+#define ASN1_R_DECODE_ERROR 109
+#define ASN1_R_DEPTH_EXCEEDED 110
+#define ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED 111
+#define ASN1_R_ENCODE_ERROR 112
+#define ASN1_R_ERROR_GETTING_TIME 113
+#define ASN1_R_EXPECTING_AN_ASN1_SEQUENCE 114
+#define ASN1_R_EXPECTING_AN_INTEGER 115
+#define ASN1_R_EXPECTING_AN_OBJECT 116
+#define ASN1_R_EXPECTING_A_BOOLEAN 117
+#define ASN1_R_EXPECTING_A_TIME 118
+#define ASN1_R_EXPLICIT_LENGTH_MISMATCH 119
+#define ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED 120
+#define ASN1_R_FIELD_MISSING 121
+#define ASN1_R_FIRST_NUM_TOO_LARGE 122
+#define ASN1_R_HEADER_TOO_LONG 123
+#define ASN1_R_ILLEGAL_BITSTRING_FORMAT 124
+#define ASN1_R_ILLEGAL_BOOLEAN 125
+#define ASN1_R_ILLEGAL_CHARACTERS 126
+#define ASN1_R_ILLEGAL_FORMAT 127
+#define ASN1_R_ILLEGAL_HEX 128
+#define ASN1_R_ILLEGAL_IMPLICIT_TAG 129
+#define ASN1_R_ILLEGAL_INTEGER 130
+#define ASN1_R_ILLEGAL_NESTED_TAGGING 131
+#define ASN1_R_ILLEGAL_NULL 132
+#define ASN1_R_ILLEGAL_NULL_VALUE 133
+#define ASN1_R_ILLEGAL_OBJECT 134
+#define ASN1_R_ILLEGAL_OPTIONAL_ANY 135
+#define ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE 136
+#define ASN1_R_ILLEGAL_TAGGED_ANY 137
+#define ASN1_R_ILLEGAL_TIME_VALUE 138
+#define ASN1_R_INTEGER_NOT_ASCII_FORMAT 139
+#define ASN1_R_INTEGER_TOO_LARGE_FOR_LONG 140
+#define ASN1_R_INVALID_BIT_STRING_BITS_LEFT 141
+#define ASN1_R_INVALID_BMPSTRING 142
+#define ASN1_R_INVALID_DIGIT 143
+#define ASN1_R_INVALID_MODIFIER 144
+#define ASN1_R_INVALID_NUMBER 145
+#define ASN1_R_INVALID_OBJECT_ENCODING 146
+#define ASN1_R_INVALID_SEPARATOR 147
+#define ASN1_R_INVALID_TIME_FORMAT 148
+#define ASN1_R_INVALID_UNIVERSALSTRING 149
+#define ASN1_R_INVALID_UTF8STRING 150
+#define ASN1_R_LIST_ERROR 151
+#define ASN1_R_MISSING_ASN1_EOS 152
+#define ASN1_R_MISSING_EOC 153
+#define ASN1_R_MISSING_SECOND_NUMBER 154
+#define ASN1_R_MISSING_VALUE 155
+#define ASN1_R_MSTRING_NOT_UNIVERSAL 156
+#define ASN1_R_MSTRING_WRONG_TAG 157
+#define ASN1_R_NESTED_ASN1_ERROR 158
+#define ASN1_R_NESTED_ASN1_STRING 159
+#define ASN1_R_NON_HEX_CHARACTERS 160
+#define ASN1_R_NOT_ASCII_FORMAT 161
+#define ASN1_R_NOT_ENOUGH_DATA 162
+#define ASN1_R_NO_MATCHING_CHOICE_TYPE 163
+#define ASN1_R_NULL_IS_WRONG_LENGTH 164
+#define ASN1_R_OBJECT_NOT_ASCII_FORMAT 165
+#define ASN1_R_ODD_NUMBER_OF_CHARS 166
+#define ASN1_R_SECOND_NUMBER_TOO_LARGE 167
+#define ASN1_R_SEQUENCE_LENGTH_MISMATCH 168
+#define ASN1_R_SEQUENCE_NOT_CONSTRUCTED 169
+#define ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG 170
+#define ASN1_R_SHORT_LINE 171
+#define ASN1_R_STREAMING_NOT_SUPPORTED 172
+#define ASN1_R_STRING_TOO_LONG 173
+#define ASN1_R_STRING_TOO_SHORT 174
+#define ASN1_R_TAG_VALUE_TOO_HIGH 175
+#define ASN1_R_TIME_NOT_ASCII_FORMAT 176
+#define ASN1_R_TOO_LONG 177
+#define ASN1_R_TYPE_NOT_CONSTRUCTED 178
+#define ASN1_R_TYPE_NOT_PRIMITIVE 179
+#define ASN1_R_UNEXPECTED_EOC 180
+#define ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH 181
+#define ASN1_R_UNKNOWN_FORMAT 182
+#define ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM 183
+#define ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM 184
+#define ASN1_R_UNKNOWN_TAG 185
+#define ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE 186
+#define ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE 187
+#define ASN1_R_UNSUPPORTED_TYPE 188
+#define ASN1_R_WRONG_PUBLIC_KEY_TYPE 189
+#define ASN1_R_WRONG_TAG 190
+#define ASN1_R_WRONG_TYPE 191
+#define ASN1_R_NESTED_TOO_DEEP 192
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h
new file mode 100644
index 0000000..666e569
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "asn1.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.back
new file mode 100644
index 0000000..666e569
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "asn1.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.grpc_back
new file mode 100644
index 0000000..666e569
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1_mac.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "asn1.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h
new file mode 100644
index 0000000..44995df
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h	
@@ -0,0 +1,892 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+#ifndef HEADER_ASN1T_H
+#define HEADER_ASN1T_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/asn1.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library template definitions.
+ *
+ * This header is used to define new types in OpenSSL's ASN.1 implementation. It
+ * is deprecated and will be unexported from the library. Use the new |CBS| and
+ * |CBB| library in <openssl/bytestring.h> instead. */
+
+
+/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
+#define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))
+
+
+/* Macros for start and end of ASN1_ITEM definition */
+
+#define ASN1_ITEM_start(itname) \
+	const ASN1_ITEM itname##_it = {
+
+#define ASN1_ITEM_end(itname) \
+		};
+
+/* Macros to aid ASN1 template writing */
+
+#define ASN1_ITEM_TEMPLATE(tname) \
+	static const ASN1_TEMPLATE tname##_item_tt 
+
+#define ASN1_ITEM_TEMPLATE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_PRIMITIVE,\
+		-1,\
+		&tname##_item_tt,\
+		0,\
+		NULL,\
+		0,\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+
+/* This is a ASN1 type which just embeds a template */
+ 
+/* This pair helps declare a SEQUENCE. We can do:
+ *
+ * 	ASN1_SEQUENCE(stname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END(stname)
+ *
+ * 	This will produce an ASN1_ITEM called stname_it
+ *	for a structure called stname.
+ *
+ * 	If you want the same structure but a different
+ *	name then use:
+ *
+ * 	ASN1_SEQUENCE(itname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END_name(stname, itname)
+ *
+ *	This will create an item called itname_it using
+ *	a structure called stname.
+ */
+
+#define ASN1_SEQUENCE(tname) \
+	static const ASN1_TEMPLATE tname##_seq_tt[] 
+
+#define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)
+
+#define ASN1_SEQUENCE_END_name(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE(tname) \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_cb(tname, cb) \
+	ASN1_SEQUENCE_cb(tname, cb)
+
+#define ASN1_SEQUENCE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_BROKEN_SEQUENCE(tname) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_ref(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_enc(tname, enc, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, cb, offsetof(tname, enc)}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(tname),\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)
+
+#define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_ref(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+
+/* This pair helps declare a CHOICE type. We can do:
+ *
+ * 	ASN1_CHOICE(chname) = {
+ * 		... CHOICE options ...
+ * 	ASN1_CHOICE_END(chname)
+ *
+ * 	This will produce an ASN1_ITEM called chname_it
+ *	for a structure called chname. The structure
+ *	definition must look like this:
+ *	typedef struct {
+ *		int type;
+ *		union {
+ *			ASN1_SOMETHING *opt1;
+ *			ASN1_SOMEOTHER *opt2;
+ *		} value;
+ *	} chname;
+ *	
+ *	the name of the selector must be 'type'.
+ * 	to use an alternative selector name use the
+ *      ASN1_CHOICE_END_selector() version.
+ */
+
+#define ASN1_CHOICE(tname) \
+	static const ASN1_TEMPLATE tname##_ch_tt[] 
+
+#define ASN1_CHOICE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_CHOICE(tname)
+
+#define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)
+
+#define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)
+
+#define ASN1_CHOICE_END_selector(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_CHOICE_END_cb(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+/* This helps with the template wrapper form of ASN1_ITEM */
+
+#define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
+	(flags), (tag), 0,\
+	#name, ASN1_ITEM_ref(type) }
+
+/* These help with SEQUENCE or CHOICE components */
+
+/* used to declare other types */
+
+#define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
+	(flags), (tag), offsetof(stname, field),\
+	#field, ASN1_ITEM_ref(type) }
+
+/* used when the structure is combined with the parent */
+
+#define ASN1_EX_COMBINE(flags, tag, type) { \
+	(flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }
+
+/* implicit and explicit helper macros */
+
+#define ASN1_IMP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)
+
+#define ASN1_EXP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)
+
+/* Any defined by macros: the field used is in the table itself */
+
+#define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+#define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+/* Plain simple type */
+#define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)
+
+/* OPTIONAL simple type */
+#define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* IMPLICIT tagged simple type */
+#define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)
+
+/* IMPLICIT tagged OPTIONAL simple type */
+#define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* Same as above but EXPLICIT */
+
+#define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
+#define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* SEQUENCE OF type */
+#define ASN1_SEQUENCE_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)
+
+/* OPTIONAL SEQUENCE OF */
+#define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Same as above but for SET OF */
+
+#define ASN1_SET_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)
+
+#define ASN1_SET_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */
+
+#define ASN1_IMP_SET_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_EXP_SET_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+/* EXPLICIT using indefinite length constructed form */
+#define ASN1_NDEF_EXP(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF)
+
+/* EXPLICIT OPTIONAL using indefinite length constructed form */
+#define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)
+
+/* Macros for the ASN1_ADB structure */
+
+#define ASN1_ADB(name) \
+	static const ASN1_ADB_TABLE name##_adbtbl[] 
+
+#define ASN1_ADB_END(name, flags, field, app_table, def, none) \
+	;\
+	static const ASN1_ADB name##_adb = {\
+		flags,\
+		offsetof(name, field),\
+		app_table,\
+		name##_adbtbl,\
+		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
+		def,\
+		none\
+	}
+
+#define ADB_ENTRY(val, template) {val, template}
+
+#define ASN1_ADB_TEMPLATE(name) \
+	static const ASN1_TEMPLATE name##_tt 
+
+/* This is the ASN1 template structure that defines
+ * a wrapper round the actual type. It determines the
+ * actual position of the field in the value structure,
+ * various flags such as OPTIONAL and the field name.
+ */
+
+struct ASN1_TEMPLATE_st {
+unsigned long flags;		/* Various flags */
+long tag;			/* tag, not used if no tagging */
+unsigned long offset;		/* Offset of this field in structure */
+#ifndef NO_ASN1_FIELD_NAMES
+const char *field_name;		/* Field name */
+#endif
+ASN1_ITEM_EXP *item;		/* Relevant ASN1_ITEM or ASN1_ADB */
+};
+
+/* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */
+
+#define ASN1_TEMPLATE_item(t) (t->item_ptr)
+#define ASN1_TEMPLATE_adb(t) (t->item_ptr)
+
+typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
+typedef struct ASN1_ADB_st ASN1_ADB;
+
+typedef struct asn1_must_be_null_st ASN1_MUST_BE_NULL;
+
+struct ASN1_ADB_st {
+	unsigned long flags;	/* Various flags */
+	unsigned long offset;	/* Offset of selector field */
+	ASN1_MUST_BE_NULL *unused;
+	const ASN1_ADB_TABLE *tbl;	/* Table of possible types */
+	long tblcount;		/* Number of entries in tbl */
+	const ASN1_TEMPLATE *default_tt;  /* Type to use if no match */
+	const ASN1_TEMPLATE *null_tt;  /* Type to use if selector is NULL */
+};
+
+struct ASN1_ADB_TABLE_st {
+	long value;		/* NID for an object or value for an int */
+	const ASN1_TEMPLATE tt;		/* item for this value */
+};
+
+/* template flags */
+
+/* Field is optional */
+#define ASN1_TFLG_OPTIONAL	(0x1)
+
+/* Field is a SET OF */
+#define ASN1_TFLG_SET_OF	(0x1 << 1)
+
+/* Field is a SEQUENCE OF */
+#define ASN1_TFLG_SEQUENCE_OF	(0x2 << 1)
+
+/* Special case: this refers to a SET OF that
+ * will be sorted into DER order when encoded *and*
+ * the corresponding STACK will be modified to match
+ * the new order.
+ */
+#define ASN1_TFLG_SET_ORDER	(0x3 << 1)
+
+/* Mask for SET OF or SEQUENCE OF */
+#define ASN1_TFLG_SK_MASK	(0x3 << 1)
+
+/* These flags mean the tag should be taken from the
+ * tag field. If EXPLICIT then the underlying type
+ * is used for the inner tag.
+ */
+
+/* IMPLICIT tagging */
+#define ASN1_TFLG_IMPTAG	(0x1 << 3)
+
+
+/* EXPLICIT tagging, inner tag from underlying type */
+#define ASN1_TFLG_EXPTAG	(0x2 << 3)
+
+#define ASN1_TFLG_TAG_MASK	(0x3 << 3)
+
+/* context specific IMPLICIT */
+#define ASN1_TFLG_IMPLICIT	ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT
+
+/* context specific EXPLICIT */
+#define ASN1_TFLG_EXPLICIT	ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT
+
+/* If tagging is in force these determine the
+ * type of tag to use. Otherwise the tag is
+ * determined by the underlying type. These 
+ * values reflect the actual octet format.
+ */
+
+/* Universal tag */ 
+#define ASN1_TFLG_UNIVERSAL	(0x0<<6)
+/* Application tag */ 
+#define ASN1_TFLG_APPLICATION	(0x1<<6)
+/* Context specific tag */ 
+#define ASN1_TFLG_CONTEXT	(0x2<<6)
+/* Private tag */ 
+#define ASN1_TFLG_PRIVATE	(0x3<<6)
+
+#define ASN1_TFLG_TAG_CLASS	(0x3<<6)
+
+/* These are for ANY DEFINED BY type. In this case
+ * the 'item' field points to an ASN1_ADB structure
+ * which contains a table of values to decode the
+ * relevant type
+ */
+
+#define ASN1_TFLG_ADB_MASK	(0x3<<8)
+
+#define ASN1_TFLG_ADB_OID	(0x1<<8)
+
+#define ASN1_TFLG_ADB_INT	(0x1<<9)
+
+/* This flag means a parent structure is passed
+ * instead of the field: this is useful is a
+ * SEQUENCE is being combined with a CHOICE for
+ * example. Since this means the structure and
+ * item name will differ we need to use the
+ * ASN1_CHOICE_END_name() macro for example.
+ */
+
+#define ASN1_TFLG_COMBINE	(0x1<<10)
+
+/* This flag when present in a SEQUENCE OF, SET OF
+ * or EXPLICIT causes indefinite length constructed
+ * encoding to be used if required.
+ */
+
+#define ASN1_TFLG_NDEF		(0x1<<11)
+
+/* This is the actual ASN1 item itself */
+
+struct ASN1_ITEM_st {
+char itype;			/* The item type, primitive, SEQUENCE, CHOICE or extern */
+long utype;			/* underlying type */
+const ASN1_TEMPLATE *templates;	/* If SEQUENCE or CHOICE this contains the contents */
+long tcount;			/* Number of templates if SEQUENCE or CHOICE */
+const void *funcs;		/* functions that handle this type */
+long size;			/* Structure size (usually)*/
+#ifndef NO_ASN1_FIELD_NAMES
+const char *sname;		/* Structure name */
+#endif
+};
+
+/* These are values for the itype field and
+ * determine how the type is interpreted.
+ *
+ * For PRIMITIVE types the underlying type
+ * determines the behaviour if items is NULL.
+ *
+ * Otherwise templates must contain a single 
+ * template and the type is treated in the
+ * same way as the type specified in the template.
+ *
+ * For SEQUENCE types the templates field points
+ * to the members, the size field is the
+ * structure size.
+ *
+ * For CHOICE types the templates field points
+ * to each possible member (typically a union)
+ * and the 'size' field is the offset of the
+ * selector.
+ *
+ * The 'funcs' field is used for application
+ * specific functions. 
+ *
+ * For COMPAT types the funcs field gives a
+ * set of functions that handle this type, this
+ * supports the old d2i, i2d convention.
+ *
+ * The EXTERN type uses a new style d2i/i2d.
+ * The new style should be used where possible
+ * because it avoids things like the d2i IMPLICIT
+ * hack.
+ *
+ * MSTRING is a multiple string type, it is used
+ * for a CHOICE of character strings where the
+ * actual strings all occupy an ASN1_STRING
+ * structure. In this case the 'utype' field
+ * has a special meaning, it is used as a mask
+ * of acceptable types using the B_ASN1 constants.
+ *
+ * NDEF_SEQUENCE is the same as SEQUENCE except
+ * that it will use indefinite length constructed
+ * encoding if requested.
+ *
+ */
+
+#define ASN1_ITYPE_PRIMITIVE		0x0
+
+#define ASN1_ITYPE_SEQUENCE		0x1
+
+#define ASN1_ITYPE_CHOICE		0x2
+
+#define ASN1_ITYPE_COMPAT		0x3
+
+#define ASN1_ITYPE_EXTERN		0x4
+
+#define ASN1_ITYPE_MSTRING		0x5
+
+#define ASN1_ITYPE_NDEF_SEQUENCE	0x6
+
+/* Cache for ASN1 tag and length, so we
+ * don't keep re-reading it for things
+ * like CHOICE
+ */
+
+struct ASN1_TLC_st{
+	char valid;	/* Values below are valid */
+	int ret;	/* return value */
+	long plen;	/* length */
+	int ptag;	/* class value */
+	int pclass;	/* class value */
+	int hdrlen;	/* header length */
+};
+
+/* Typedefs for ASN1 function pointers */
+
+typedef ASN1_VALUE * ASN1_new_func(void);
+typedef void ASN1_free_func(ASN1_VALUE *a);
+typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, const unsigned char ** in, long length);
+typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in);
+
+typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+					int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+typedef int ASN1_ex_print_func(BIO *out, ASN1_VALUE **pval, 
+						int indent, const char *fname, 
+						const ASN1_PCTX *pctx);
+
+typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+typedef int ASN1_primitive_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent, const ASN1_PCTX *pctx);
+
+typedef struct ASN1_COMPAT_FUNCS_st {
+	ASN1_new_func *asn1_new;
+	ASN1_free_func *asn1_free;
+	ASN1_d2i_func *asn1_d2i;
+	ASN1_i2d_func *asn1_i2d;
+} ASN1_COMPAT_FUNCS;
+
+typedef struct ASN1_EXTERN_FUNCS_st {
+	void *app_data;
+	ASN1_ex_new_func *asn1_ex_new;
+	ASN1_ex_free_func *asn1_ex_free;
+	ASN1_ex_free_func *asn1_ex_clear;
+	ASN1_ex_d2i *asn1_ex_d2i;
+	ASN1_ex_i2d *asn1_ex_i2d;
+	/* asn1_ex_print is unused. */
+	ASN1_ex_print_func *asn1_ex_print;
+} ASN1_EXTERN_FUNCS;
+
+typedef struct ASN1_PRIMITIVE_FUNCS_st {
+	void *app_data;
+	unsigned long flags;
+	ASN1_ex_new_func *prim_new;
+	ASN1_ex_free_func *prim_free;
+	ASN1_ex_free_func *prim_clear;
+	ASN1_primitive_c2i *prim_c2i;
+	ASN1_primitive_i2c *prim_i2c;
+	ASN1_primitive_print *prim_print;
+} ASN1_PRIMITIVE_FUNCS;
+
+/* This is the ASN1_AUX structure: it handles various
+ * miscellaneous requirements. For example the use of
+ * reference counts and an informational callback.
+ *
+ * The "informational callback" is called at various
+ * points during the ASN1 encoding and decoding. It can
+ * be used to provide minor customisation of the structures
+ * used. This is most useful where the supplied routines
+ * *almost* do the right thing but need some extra help
+ * at a few points. If the callback returns zero then
+ * it is assumed a fatal error has occurred and the 
+ * main operation should be abandoned.
+ *
+ * If major changes in the default behaviour are required
+ * then an external type is more appropriate.
+ */
+
+typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it,
+				void *exarg);
+
+typedef struct ASN1_AUX_st {
+	void *app_data;
+	int flags;
+	int ref_offset;		/* Offset of reference value */
+	ASN1_aux_cb *asn1_cb;
+	int enc_offset;		/* Offset of ASN1_ENCODING structure */
+} ASN1_AUX;
+
+/* For print related callbacks exarg points to this structure */
+typedef struct ASN1_PRINT_ARG_st {
+	BIO *out;
+	int indent;
+	const ASN1_PCTX *pctx;
+} ASN1_PRINT_ARG;
+
+/* For streaming related callbacks exarg points to this structure */
+typedef struct ASN1_STREAM_ARG_st {
+	/* BIO to stream through */
+	BIO *out;
+	/* BIO with filters appended */
+	BIO *ndef_bio;
+	/* Streaming I/O boundary */
+	unsigned char **boundary;
+} ASN1_STREAM_ARG;
+
+/* Flags in ASN1_AUX */
+
+/* Use a reference count */
+#define ASN1_AFLG_REFCOUNT	1
+/* Save the encoding of structure (useful for signatures) */
+#define ASN1_AFLG_ENCODING	2
+/* The Sequence length is invalid */
+#define ASN1_AFLG_BROKEN	4
+
+/* operation values for asn1_cb */
+
+#define ASN1_OP_NEW_PRE		0
+#define ASN1_OP_NEW_POST	1
+#define ASN1_OP_FREE_PRE	2
+#define ASN1_OP_FREE_POST	3
+#define ASN1_OP_D2I_PRE		4
+#define ASN1_OP_D2I_POST	5
+#define ASN1_OP_I2D_PRE		6
+#define ASN1_OP_I2D_POST	7
+#define ASN1_OP_PRINT_PRE	8
+#define ASN1_OP_PRINT_POST	9
+#define ASN1_OP_STREAM_PRE	10
+#define ASN1_OP_STREAM_POST	11
+#define ASN1_OP_DETACHED_PRE	12
+#define ASN1_OP_DETACHED_POST	13
+
+/* Macro to implement a primitive type */
+#define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
+#define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement a multi string type */
+#define IMPLEMENT_ASN1_MSTRING(itname, mask) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement an ASN1_ITEM in terms of old style funcs */
+
+#define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)
+
+#define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
+	static const ASN1_COMPAT_FUNCS sname##_ff = { \
+		(ASN1_new_func *)sname##_new, \
+		(ASN1_free_func *)sname##_free, \
+		(ASN1_d2i_func *)d2i_##sname, \
+		(ASN1_i2d_func *)i2d_##sname, \
+	}; \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_COMPAT, \
+		tag, \
+		NULL, \
+		0, \
+		&sname##_ff, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+#define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_EXTERN, \
+		tag, \
+		NULL, \
+		0, \
+		&fptrs, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+/* Macro to implement standard functions in terms of ASN1_ITEM structures */
+
+#define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
+			IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)
+
+#define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \
+	pre stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	pre void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
+	stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
+	int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
+	} 
+
+/* This includes evil casts to remove const: they will go away when full
+ * ASN1 constification is done.
+ */
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(const stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
+	stname * stname##_dup(stname *x) \
+        { \
+        return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
+        }
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
+		IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+/* external definitions for primitive types */
+
+DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
+
+DEFINE_STACK_OF(ASN1_VALUE)
+
+/* Functions used internally by the ASN1 code */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+				int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
+
+ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr);
+
+void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen, const ASN1_ITEM *it);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.back
new file mode 100644
index 0000000..7bd7701
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.back	
@@ -0,0 +1,892 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+#ifndef HEADER_ASN1T_H
+#define HEADER_ASN1T_H
+
+#include <openssl/base.h>
+#include <openssl/asn1.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library template definitions.
+ *
+ * This header is used to define new types in OpenSSL's ASN.1 implementation. It
+ * is deprecated and will be unexported from the library. Use the new |CBS| and
+ * |CBB| library in <openssl/bytestring.h> instead. */
+
+
+/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
+#define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))
+
+
+/* Macros for start and end of ASN1_ITEM definition */
+
+#define ASN1_ITEM_start(itname) \
+	const ASN1_ITEM itname##_it = {
+
+#define ASN1_ITEM_end(itname) \
+		};
+
+/* Macros to aid ASN1 template writing */
+
+#define ASN1_ITEM_TEMPLATE(tname) \
+	static const ASN1_TEMPLATE tname##_item_tt 
+
+#define ASN1_ITEM_TEMPLATE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_PRIMITIVE,\
+		-1,\
+		&tname##_item_tt,\
+		0,\
+		NULL,\
+		0,\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+
+/* This is a ASN1 type which just embeds a template */
+ 
+/* This pair helps declare a SEQUENCE. We can do:
+ *
+ * 	ASN1_SEQUENCE(stname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END(stname)
+ *
+ * 	This will produce an ASN1_ITEM called stname_it
+ *	for a structure called stname.
+ *
+ * 	If you want the same structure but a different
+ *	name then use:
+ *
+ * 	ASN1_SEQUENCE(itname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END_name(stname, itname)
+ *
+ *	This will create an item called itname_it using
+ *	a structure called stname.
+ */
+
+#define ASN1_SEQUENCE(tname) \
+	static const ASN1_TEMPLATE tname##_seq_tt[] 
+
+#define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)
+
+#define ASN1_SEQUENCE_END_name(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE(tname) \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_cb(tname, cb) \
+	ASN1_SEQUENCE_cb(tname, cb)
+
+#define ASN1_SEQUENCE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_BROKEN_SEQUENCE(tname) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_ref(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_enc(tname, enc, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, cb, offsetof(tname, enc)}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(tname),\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)
+
+#define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_ref(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+
+/* This pair helps declare a CHOICE type. We can do:
+ *
+ * 	ASN1_CHOICE(chname) = {
+ * 		... CHOICE options ...
+ * 	ASN1_CHOICE_END(chname)
+ *
+ * 	This will produce an ASN1_ITEM called chname_it
+ *	for a structure called chname. The structure
+ *	definition must look like this:
+ *	typedef struct {
+ *		int type;
+ *		union {
+ *			ASN1_SOMETHING *opt1;
+ *			ASN1_SOMEOTHER *opt2;
+ *		} value;
+ *	} chname;
+ *	
+ *	the name of the selector must be 'type'.
+ * 	to use an alternative selector name use the
+ *      ASN1_CHOICE_END_selector() version.
+ */
+
+#define ASN1_CHOICE(tname) \
+	static const ASN1_TEMPLATE tname##_ch_tt[] 
+
+#define ASN1_CHOICE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_CHOICE(tname)
+
+#define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)
+
+#define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)
+
+#define ASN1_CHOICE_END_selector(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_CHOICE_END_cb(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+/* This helps with the template wrapper form of ASN1_ITEM */
+
+#define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
+	(flags), (tag), 0,\
+	#name, ASN1_ITEM_ref(type) }
+
+/* These help with SEQUENCE or CHOICE components */
+
+/* used to declare other types */
+
+#define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
+	(flags), (tag), offsetof(stname, field),\
+	#field, ASN1_ITEM_ref(type) }
+
+/* used when the structure is combined with the parent */
+
+#define ASN1_EX_COMBINE(flags, tag, type) { \
+	(flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }
+
+/* implicit and explicit helper macros */
+
+#define ASN1_IMP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)
+
+#define ASN1_EXP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)
+
+/* Any defined by macros: the field used is in the table itself */
+
+#define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+#define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+/* Plain simple type */
+#define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)
+
+/* OPTIONAL simple type */
+#define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* IMPLICIT tagged simple type */
+#define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)
+
+/* IMPLICIT tagged OPTIONAL simple type */
+#define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* Same as above but EXPLICIT */
+
+#define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
+#define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* SEQUENCE OF type */
+#define ASN1_SEQUENCE_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)
+
+/* OPTIONAL SEQUENCE OF */
+#define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Same as above but for SET OF */
+
+#define ASN1_SET_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)
+
+#define ASN1_SET_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */
+
+#define ASN1_IMP_SET_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_EXP_SET_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+/* EXPLICIT using indefinite length constructed form */
+#define ASN1_NDEF_EXP(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF)
+
+/* EXPLICIT OPTIONAL using indefinite length constructed form */
+#define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)
+
+/* Macros for the ASN1_ADB structure */
+
+#define ASN1_ADB(name) \
+	static const ASN1_ADB_TABLE name##_adbtbl[] 
+
+#define ASN1_ADB_END(name, flags, field, app_table, def, none) \
+	;\
+	static const ASN1_ADB name##_adb = {\
+		flags,\
+		offsetof(name, field),\
+		app_table,\
+		name##_adbtbl,\
+		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
+		def,\
+		none\
+	}
+
+#define ADB_ENTRY(val, template) {val, template}
+
+#define ASN1_ADB_TEMPLATE(name) \
+	static const ASN1_TEMPLATE name##_tt 
+
+/* This is the ASN1 template structure that defines
+ * a wrapper round the actual type. It determines the
+ * actual position of the field in the value structure,
+ * various flags such as OPTIONAL and the field name.
+ */
+
+struct ASN1_TEMPLATE_st {
+unsigned long flags;		/* Various flags */
+long tag;			/* tag, not used if no tagging */
+unsigned long offset;		/* Offset of this field in structure */
+#ifndef NO_ASN1_FIELD_NAMES
+const char *field_name;		/* Field name */
+#endif
+ASN1_ITEM_EXP *item;		/* Relevant ASN1_ITEM or ASN1_ADB */
+};
+
+/* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */
+
+#define ASN1_TEMPLATE_item(t) (t->item_ptr)
+#define ASN1_TEMPLATE_adb(t) (t->item_ptr)
+
+typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
+typedef struct ASN1_ADB_st ASN1_ADB;
+
+typedef struct asn1_must_be_null_st ASN1_MUST_BE_NULL;
+
+struct ASN1_ADB_st {
+	unsigned long flags;	/* Various flags */
+	unsigned long offset;	/* Offset of selector field */
+	ASN1_MUST_BE_NULL *unused;
+	const ASN1_ADB_TABLE *tbl;	/* Table of possible types */
+	long tblcount;		/* Number of entries in tbl */
+	const ASN1_TEMPLATE *default_tt;  /* Type to use if no match */
+	const ASN1_TEMPLATE *null_tt;  /* Type to use if selector is NULL */
+};
+
+struct ASN1_ADB_TABLE_st {
+	long value;		/* NID for an object or value for an int */
+	const ASN1_TEMPLATE tt;		/* item for this value */
+};
+
+/* template flags */
+
+/* Field is optional */
+#define ASN1_TFLG_OPTIONAL	(0x1)
+
+/* Field is a SET OF */
+#define ASN1_TFLG_SET_OF	(0x1 << 1)
+
+/* Field is a SEQUENCE OF */
+#define ASN1_TFLG_SEQUENCE_OF	(0x2 << 1)
+
+/* Special case: this refers to a SET OF that
+ * will be sorted into DER order when encoded *and*
+ * the corresponding STACK will be modified to match
+ * the new order.
+ */
+#define ASN1_TFLG_SET_ORDER	(0x3 << 1)
+
+/* Mask for SET OF or SEQUENCE OF */
+#define ASN1_TFLG_SK_MASK	(0x3 << 1)
+
+/* These flags mean the tag should be taken from the
+ * tag field. If EXPLICIT then the underlying type
+ * is used for the inner tag.
+ */
+
+/* IMPLICIT tagging */
+#define ASN1_TFLG_IMPTAG	(0x1 << 3)
+
+
+/* EXPLICIT tagging, inner tag from underlying type */
+#define ASN1_TFLG_EXPTAG	(0x2 << 3)
+
+#define ASN1_TFLG_TAG_MASK	(0x3 << 3)
+
+/* context specific IMPLICIT */
+#define ASN1_TFLG_IMPLICIT	ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT
+
+/* context specific EXPLICIT */
+#define ASN1_TFLG_EXPLICIT	ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT
+
+/* If tagging is in force these determine the
+ * type of tag to use. Otherwise the tag is
+ * determined by the underlying type. These 
+ * values reflect the actual octet format.
+ */
+
+/* Universal tag */ 
+#define ASN1_TFLG_UNIVERSAL	(0x0<<6)
+/* Application tag */ 
+#define ASN1_TFLG_APPLICATION	(0x1<<6)
+/* Context specific tag */ 
+#define ASN1_TFLG_CONTEXT	(0x2<<6)
+/* Private tag */ 
+#define ASN1_TFLG_PRIVATE	(0x3<<6)
+
+#define ASN1_TFLG_TAG_CLASS	(0x3<<6)
+
+/* These are for ANY DEFINED BY type. In this case
+ * the 'item' field points to an ASN1_ADB structure
+ * which contains a table of values to decode the
+ * relevant type
+ */
+
+#define ASN1_TFLG_ADB_MASK	(0x3<<8)
+
+#define ASN1_TFLG_ADB_OID	(0x1<<8)
+
+#define ASN1_TFLG_ADB_INT	(0x1<<9)
+
+/* This flag means a parent structure is passed
+ * instead of the field: this is useful is a
+ * SEQUENCE is being combined with a CHOICE for
+ * example. Since this means the structure and
+ * item name will differ we need to use the
+ * ASN1_CHOICE_END_name() macro for example.
+ */
+
+#define ASN1_TFLG_COMBINE	(0x1<<10)
+
+/* This flag when present in a SEQUENCE OF, SET OF
+ * or EXPLICIT causes indefinite length constructed
+ * encoding to be used if required.
+ */
+
+#define ASN1_TFLG_NDEF		(0x1<<11)
+
+/* This is the actual ASN1 item itself */
+
+struct ASN1_ITEM_st {
+char itype;			/* The item type, primitive, SEQUENCE, CHOICE or extern */
+long utype;			/* underlying type */
+const ASN1_TEMPLATE *templates;	/* If SEQUENCE or CHOICE this contains the contents */
+long tcount;			/* Number of templates if SEQUENCE or CHOICE */
+const void *funcs;		/* functions that handle this type */
+long size;			/* Structure size (usually)*/
+#ifndef NO_ASN1_FIELD_NAMES
+const char *sname;		/* Structure name */
+#endif
+};
+
+/* These are values for the itype field and
+ * determine how the type is interpreted.
+ *
+ * For PRIMITIVE types the underlying type
+ * determines the behaviour if items is NULL.
+ *
+ * Otherwise templates must contain a single 
+ * template and the type is treated in the
+ * same way as the type specified in the template.
+ *
+ * For SEQUENCE types the templates field points
+ * to the members, the size field is the
+ * structure size.
+ *
+ * For CHOICE types the templates field points
+ * to each possible member (typically a union)
+ * and the 'size' field is the offset of the
+ * selector.
+ *
+ * The 'funcs' field is used for application
+ * specific functions. 
+ *
+ * For COMPAT types the funcs field gives a
+ * set of functions that handle this type, this
+ * supports the old d2i, i2d convention.
+ *
+ * The EXTERN type uses a new style d2i/i2d.
+ * The new style should be used where possible
+ * because it avoids things like the d2i IMPLICIT
+ * hack.
+ *
+ * MSTRING is a multiple string type, it is used
+ * for a CHOICE of character strings where the
+ * actual strings all occupy an ASN1_STRING
+ * structure. In this case the 'utype' field
+ * has a special meaning, it is used as a mask
+ * of acceptable types using the B_ASN1 constants.
+ *
+ * NDEF_SEQUENCE is the same as SEQUENCE except
+ * that it will use indefinite length constructed
+ * encoding if requested.
+ *
+ */
+
+#define ASN1_ITYPE_PRIMITIVE		0x0
+
+#define ASN1_ITYPE_SEQUENCE		0x1
+
+#define ASN1_ITYPE_CHOICE		0x2
+
+#define ASN1_ITYPE_COMPAT		0x3
+
+#define ASN1_ITYPE_EXTERN		0x4
+
+#define ASN1_ITYPE_MSTRING		0x5
+
+#define ASN1_ITYPE_NDEF_SEQUENCE	0x6
+
+/* Cache for ASN1 tag and length, so we
+ * don't keep re-reading it for things
+ * like CHOICE
+ */
+
+struct ASN1_TLC_st{
+	char valid;	/* Values below are valid */
+	int ret;	/* return value */
+	long plen;	/* length */
+	int ptag;	/* class value */
+	int pclass;	/* class value */
+	int hdrlen;	/* header length */
+};
+
+/* Typedefs for ASN1 function pointers */
+
+typedef ASN1_VALUE * ASN1_new_func(void);
+typedef void ASN1_free_func(ASN1_VALUE *a);
+typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, const unsigned char ** in, long length);
+typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in);
+
+typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+					int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+typedef int ASN1_ex_print_func(BIO *out, ASN1_VALUE **pval, 
+						int indent, const char *fname, 
+						const ASN1_PCTX *pctx);
+
+typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+typedef int ASN1_primitive_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent, const ASN1_PCTX *pctx);
+
+typedef struct ASN1_COMPAT_FUNCS_st {
+	ASN1_new_func *asn1_new;
+	ASN1_free_func *asn1_free;
+	ASN1_d2i_func *asn1_d2i;
+	ASN1_i2d_func *asn1_i2d;
+} ASN1_COMPAT_FUNCS;
+
+typedef struct ASN1_EXTERN_FUNCS_st {
+	void *app_data;
+	ASN1_ex_new_func *asn1_ex_new;
+	ASN1_ex_free_func *asn1_ex_free;
+	ASN1_ex_free_func *asn1_ex_clear;
+	ASN1_ex_d2i *asn1_ex_d2i;
+	ASN1_ex_i2d *asn1_ex_i2d;
+	/* asn1_ex_print is unused. */
+	ASN1_ex_print_func *asn1_ex_print;
+} ASN1_EXTERN_FUNCS;
+
+typedef struct ASN1_PRIMITIVE_FUNCS_st {
+	void *app_data;
+	unsigned long flags;
+	ASN1_ex_new_func *prim_new;
+	ASN1_ex_free_func *prim_free;
+	ASN1_ex_free_func *prim_clear;
+	ASN1_primitive_c2i *prim_c2i;
+	ASN1_primitive_i2c *prim_i2c;
+	ASN1_primitive_print *prim_print;
+} ASN1_PRIMITIVE_FUNCS;
+
+/* This is the ASN1_AUX structure: it handles various
+ * miscellaneous requirements. For example the use of
+ * reference counts and an informational callback.
+ *
+ * The "informational callback" is called at various
+ * points during the ASN1 encoding and decoding. It can
+ * be used to provide minor customisation of the structures
+ * used. This is most useful where the supplied routines
+ * *almost* do the right thing but need some extra help
+ * at a few points. If the callback returns zero then
+ * it is assumed a fatal error has occurred and the 
+ * main operation should be abandoned.
+ *
+ * If major changes in the default behaviour are required
+ * then an external type is more appropriate.
+ */
+
+typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it,
+				void *exarg);
+
+typedef struct ASN1_AUX_st {
+	void *app_data;
+	int flags;
+	int ref_offset;		/* Offset of reference value */
+	ASN1_aux_cb *asn1_cb;
+	int enc_offset;		/* Offset of ASN1_ENCODING structure */
+} ASN1_AUX;
+
+/* For print related callbacks exarg points to this structure */
+typedef struct ASN1_PRINT_ARG_st {
+	BIO *out;
+	int indent;
+	const ASN1_PCTX *pctx;
+} ASN1_PRINT_ARG;
+
+/* For streaming related callbacks exarg points to this structure */
+typedef struct ASN1_STREAM_ARG_st {
+	/* BIO to stream through */
+	BIO *out;
+	/* BIO with filters appended */
+	BIO *ndef_bio;
+	/* Streaming I/O boundary */
+	unsigned char **boundary;
+} ASN1_STREAM_ARG;
+
+/* Flags in ASN1_AUX */
+
+/* Use a reference count */
+#define ASN1_AFLG_REFCOUNT	1
+/* Save the encoding of structure (useful for signatures) */
+#define ASN1_AFLG_ENCODING	2
+/* The Sequence length is invalid */
+#define ASN1_AFLG_BROKEN	4
+
+/* operation values for asn1_cb */
+
+#define ASN1_OP_NEW_PRE		0
+#define ASN1_OP_NEW_POST	1
+#define ASN1_OP_FREE_PRE	2
+#define ASN1_OP_FREE_POST	3
+#define ASN1_OP_D2I_PRE		4
+#define ASN1_OP_D2I_POST	5
+#define ASN1_OP_I2D_PRE		6
+#define ASN1_OP_I2D_POST	7
+#define ASN1_OP_PRINT_PRE	8
+#define ASN1_OP_PRINT_POST	9
+#define ASN1_OP_STREAM_PRE	10
+#define ASN1_OP_STREAM_POST	11
+#define ASN1_OP_DETACHED_PRE	12
+#define ASN1_OP_DETACHED_POST	13
+
+/* Macro to implement a primitive type */
+#define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
+#define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement a multi string type */
+#define IMPLEMENT_ASN1_MSTRING(itname, mask) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement an ASN1_ITEM in terms of old style funcs */
+
+#define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)
+
+#define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
+	static const ASN1_COMPAT_FUNCS sname##_ff = { \
+		(ASN1_new_func *)sname##_new, \
+		(ASN1_free_func *)sname##_free, \
+		(ASN1_d2i_func *)d2i_##sname, \
+		(ASN1_i2d_func *)i2d_##sname, \
+	}; \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_COMPAT, \
+		tag, \
+		NULL, \
+		0, \
+		&sname##_ff, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+#define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_EXTERN, \
+		tag, \
+		NULL, \
+		0, \
+		&fptrs, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+/* Macro to implement standard functions in terms of ASN1_ITEM structures */
+
+#define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
+			IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)
+
+#define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \
+	pre stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	pre void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
+	stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
+	int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
+	} 
+
+/* This includes evil casts to remove const: they will go away when full
+ * ASN1 constification is done.
+ */
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(const stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
+	stname * stname##_dup(stname *x) \
+        { \
+        return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
+        }
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
+		IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+/* external definitions for primitive types */
+
+DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
+
+DEFINE_STACK_OF(ASN1_VALUE)
+
+/* Functions used internally by the ASN1 code */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+				int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
+
+ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr);
+
+void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen, const ASN1_ITEM *it);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.grpc_back
new file mode 100644
index 0000000..7bd7701
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/asn1t.h.grpc_back	
@@ -0,0 +1,892 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+#ifndef HEADER_ASN1T_H
+#define HEADER_ASN1T_H
+
+#include <openssl/base.h>
+#include <openssl/asn1.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy ASN.1 library template definitions.
+ *
+ * This header is used to define new types in OpenSSL's ASN.1 implementation. It
+ * is deprecated and will be unexported from the library. Use the new |CBS| and
+ * |CBB| library in <openssl/bytestring.h> instead. */
+
+
+/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
+#define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))
+
+
+/* Macros for start and end of ASN1_ITEM definition */
+
+#define ASN1_ITEM_start(itname) \
+	const ASN1_ITEM itname##_it = {
+
+#define ASN1_ITEM_end(itname) \
+		};
+
+/* Macros to aid ASN1 template writing */
+
+#define ASN1_ITEM_TEMPLATE(tname) \
+	static const ASN1_TEMPLATE tname##_item_tt 
+
+#define ASN1_ITEM_TEMPLATE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_PRIMITIVE,\
+		-1,\
+		&tname##_item_tt,\
+		0,\
+		NULL,\
+		0,\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+
+/* This is a ASN1 type which just embeds a template */
+ 
+/* This pair helps declare a SEQUENCE. We can do:
+ *
+ * 	ASN1_SEQUENCE(stname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END(stname)
+ *
+ * 	This will produce an ASN1_ITEM called stname_it
+ *	for a structure called stname.
+ *
+ * 	If you want the same structure but a different
+ *	name then use:
+ *
+ * 	ASN1_SEQUENCE(itname) = {
+ * 		... SEQUENCE components ...
+ * 	} ASN1_SEQUENCE_END_name(stname, itname)
+ *
+ *	This will create an item called itname_it using
+ *	a structure called stname.
+ */
+
+#define ASN1_SEQUENCE(tname) \
+	static const ASN1_TEMPLATE tname##_seq_tt[] 
+
+#define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)
+
+#define ASN1_SEQUENCE_END_name(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE(tname) \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_cb(tname, cb) \
+	ASN1_SEQUENCE_cb(tname, cb)
+
+#define ASN1_SEQUENCE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_BROKEN_SEQUENCE(tname) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_ref(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), cb, 0}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_SEQUENCE_enc(tname, enc, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, cb, offsetof(tname, enc)}; \
+	ASN1_SEQUENCE(tname)
+
+#define ASN1_NDEF_SEQUENCE_END(tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(tname),\
+		#tname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)
+
+#define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
+
+#define ASN1_SEQUENCE_END_ref(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_NDEF_SEQUENCE,\
+		V_ASN1_SEQUENCE,\
+		tname##_seq_tt,\
+		sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+
+/* This pair helps declare a CHOICE type. We can do:
+ *
+ * 	ASN1_CHOICE(chname) = {
+ * 		... CHOICE options ...
+ * 	ASN1_CHOICE_END(chname)
+ *
+ * 	This will produce an ASN1_ITEM called chname_it
+ *	for a structure called chname. The structure
+ *	definition must look like this:
+ *	typedef struct {
+ *		int type;
+ *		union {
+ *			ASN1_SOMETHING *opt1;
+ *			ASN1_SOMEOTHER *opt2;
+ *		} value;
+ *	} chname;
+ *	
+ *	the name of the selector must be 'type'.
+ * 	to use an alternative selector name use the
+ *      ASN1_CHOICE_END_selector() version.
+ */
+
+#define ASN1_CHOICE(tname) \
+	static const ASN1_TEMPLATE tname##_ch_tt[] 
+
+#define ASN1_CHOICE_cb(tname, cb) \
+	static const ASN1_AUX tname##_aux = {NULL, 0, 0, cb, 0}; \
+	ASN1_CHOICE(tname)
+
+#define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)
+
+#define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)
+
+#define ASN1_CHOICE_END_selector(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		NULL,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+#define ASN1_CHOICE_END_cb(stname, tname, selname) \
+	;\
+	ASN1_ITEM_start(tname) \
+		ASN1_ITYPE_CHOICE,\
+		offsetof(stname,selname) ,\
+		tname##_ch_tt,\
+		sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
+		&tname##_aux,\
+		sizeof(stname),\
+		#stname \
+	ASN1_ITEM_end(tname)
+
+/* This helps with the template wrapper form of ASN1_ITEM */
+
+#define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
+	(flags), (tag), 0,\
+	#name, ASN1_ITEM_ref(type) }
+
+/* These help with SEQUENCE or CHOICE components */
+
+/* used to declare other types */
+
+#define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
+	(flags), (tag), offsetof(stname, field),\
+	#field, ASN1_ITEM_ref(type) }
+
+/* used when the structure is combined with the parent */
+
+#define ASN1_EX_COMBINE(flags, tag, type) { \
+	(flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }
+
+/* implicit and explicit helper macros */
+
+#define ASN1_IMP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)
+
+#define ASN1_EXP_EX(stname, field, type, tag, ex) \
+		ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)
+
+/* Any defined by macros: the field used is in the table itself */
+
+#define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+#define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
+/* Plain simple type */
+#define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)
+
+/* OPTIONAL simple type */
+#define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* IMPLICIT tagged simple type */
+#define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)
+
+/* IMPLICIT tagged OPTIONAL simple type */
+#define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* Same as above but EXPLICIT */
+
+#define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
+#define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
+
+/* SEQUENCE OF type */
+#define ASN1_SEQUENCE_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)
+
+/* OPTIONAL SEQUENCE OF */
+#define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Same as above but for SET OF */
+
+#define ASN1_SET_OF(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)
+
+#define ASN1_SET_OF_OPT(stname, field, type) \
+		ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
+
+/* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */
+
+#define ASN1_IMP_SET_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_EXP_SET_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
+
+#define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+#define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
+
+#define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
+
+/* EXPLICIT using indefinite length constructed form */
+#define ASN1_NDEF_EXP(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF)
+
+/* EXPLICIT OPTIONAL using indefinite length constructed form */
+#define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
+			ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)
+
+/* Macros for the ASN1_ADB structure */
+
+#define ASN1_ADB(name) \
+	static const ASN1_ADB_TABLE name##_adbtbl[] 
+
+#define ASN1_ADB_END(name, flags, field, app_table, def, none) \
+	;\
+	static const ASN1_ADB name##_adb = {\
+		flags,\
+		offsetof(name, field),\
+		app_table,\
+		name##_adbtbl,\
+		sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
+		def,\
+		none\
+	}
+
+#define ADB_ENTRY(val, template) {val, template}
+
+#define ASN1_ADB_TEMPLATE(name) \
+	static const ASN1_TEMPLATE name##_tt 
+
+/* This is the ASN1 template structure that defines
+ * a wrapper round the actual type. It determines the
+ * actual position of the field in the value structure,
+ * various flags such as OPTIONAL and the field name.
+ */
+
+struct ASN1_TEMPLATE_st {
+unsigned long flags;		/* Various flags */
+long tag;			/* tag, not used if no tagging */
+unsigned long offset;		/* Offset of this field in structure */
+#ifndef NO_ASN1_FIELD_NAMES
+const char *field_name;		/* Field name */
+#endif
+ASN1_ITEM_EXP *item;		/* Relevant ASN1_ITEM or ASN1_ADB */
+};
+
+/* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */
+
+#define ASN1_TEMPLATE_item(t) (t->item_ptr)
+#define ASN1_TEMPLATE_adb(t) (t->item_ptr)
+
+typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
+typedef struct ASN1_ADB_st ASN1_ADB;
+
+typedef struct asn1_must_be_null_st ASN1_MUST_BE_NULL;
+
+struct ASN1_ADB_st {
+	unsigned long flags;	/* Various flags */
+	unsigned long offset;	/* Offset of selector field */
+	ASN1_MUST_BE_NULL *unused;
+	const ASN1_ADB_TABLE *tbl;	/* Table of possible types */
+	long tblcount;		/* Number of entries in tbl */
+	const ASN1_TEMPLATE *default_tt;  /* Type to use if no match */
+	const ASN1_TEMPLATE *null_tt;  /* Type to use if selector is NULL */
+};
+
+struct ASN1_ADB_TABLE_st {
+	long value;		/* NID for an object or value for an int */
+	const ASN1_TEMPLATE tt;		/* item for this value */
+};
+
+/* template flags */
+
+/* Field is optional */
+#define ASN1_TFLG_OPTIONAL	(0x1)
+
+/* Field is a SET OF */
+#define ASN1_TFLG_SET_OF	(0x1 << 1)
+
+/* Field is a SEQUENCE OF */
+#define ASN1_TFLG_SEQUENCE_OF	(0x2 << 1)
+
+/* Special case: this refers to a SET OF that
+ * will be sorted into DER order when encoded *and*
+ * the corresponding STACK will be modified to match
+ * the new order.
+ */
+#define ASN1_TFLG_SET_ORDER	(0x3 << 1)
+
+/* Mask for SET OF or SEQUENCE OF */
+#define ASN1_TFLG_SK_MASK	(0x3 << 1)
+
+/* These flags mean the tag should be taken from the
+ * tag field. If EXPLICIT then the underlying type
+ * is used for the inner tag.
+ */
+
+/* IMPLICIT tagging */
+#define ASN1_TFLG_IMPTAG	(0x1 << 3)
+
+
+/* EXPLICIT tagging, inner tag from underlying type */
+#define ASN1_TFLG_EXPTAG	(0x2 << 3)
+
+#define ASN1_TFLG_TAG_MASK	(0x3 << 3)
+
+/* context specific IMPLICIT */
+#define ASN1_TFLG_IMPLICIT	ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT
+
+/* context specific EXPLICIT */
+#define ASN1_TFLG_EXPLICIT	ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT
+
+/* If tagging is in force these determine the
+ * type of tag to use. Otherwise the tag is
+ * determined by the underlying type. These 
+ * values reflect the actual octet format.
+ */
+
+/* Universal tag */ 
+#define ASN1_TFLG_UNIVERSAL	(0x0<<6)
+/* Application tag */ 
+#define ASN1_TFLG_APPLICATION	(0x1<<6)
+/* Context specific tag */ 
+#define ASN1_TFLG_CONTEXT	(0x2<<6)
+/* Private tag */ 
+#define ASN1_TFLG_PRIVATE	(0x3<<6)
+
+#define ASN1_TFLG_TAG_CLASS	(0x3<<6)
+
+/* These are for ANY DEFINED BY type. In this case
+ * the 'item' field points to an ASN1_ADB structure
+ * which contains a table of values to decode the
+ * relevant type
+ */
+
+#define ASN1_TFLG_ADB_MASK	(0x3<<8)
+
+#define ASN1_TFLG_ADB_OID	(0x1<<8)
+
+#define ASN1_TFLG_ADB_INT	(0x1<<9)
+
+/* This flag means a parent structure is passed
+ * instead of the field: this is useful is a
+ * SEQUENCE is being combined with a CHOICE for
+ * example. Since this means the structure and
+ * item name will differ we need to use the
+ * ASN1_CHOICE_END_name() macro for example.
+ */
+
+#define ASN1_TFLG_COMBINE	(0x1<<10)
+
+/* This flag when present in a SEQUENCE OF, SET OF
+ * or EXPLICIT causes indefinite length constructed
+ * encoding to be used if required.
+ */
+
+#define ASN1_TFLG_NDEF		(0x1<<11)
+
+/* This is the actual ASN1 item itself */
+
+struct ASN1_ITEM_st {
+char itype;			/* The item type, primitive, SEQUENCE, CHOICE or extern */
+long utype;			/* underlying type */
+const ASN1_TEMPLATE *templates;	/* If SEQUENCE or CHOICE this contains the contents */
+long tcount;			/* Number of templates if SEQUENCE or CHOICE */
+const void *funcs;		/* functions that handle this type */
+long size;			/* Structure size (usually)*/
+#ifndef NO_ASN1_FIELD_NAMES
+const char *sname;		/* Structure name */
+#endif
+};
+
+/* These are values for the itype field and
+ * determine how the type is interpreted.
+ *
+ * For PRIMITIVE types the underlying type
+ * determines the behaviour if items is NULL.
+ *
+ * Otherwise templates must contain a single 
+ * template and the type is treated in the
+ * same way as the type specified in the template.
+ *
+ * For SEQUENCE types the templates field points
+ * to the members, the size field is the
+ * structure size.
+ *
+ * For CHOICE types the templates field points
+ * to each possible member (typically a union)
+ * and the 'size' field is the offset of the
+ * selector.
+ *
+ * The 'funcs' field is used for application
+ * specific functions. 
+ *
+ * For COMPAT types the funcs field gives a
+ * set of functions that handle this type, this
+ * supports the old d2i, i2d convention.
+ *
+ * The EXTERN type uses a new style d2i/i2d.
+ * The new style should be used where possible
+ * because it avoids things like the d2i IMPLICIT
+ * hack.
+ *
+ * MSTRING is a multiple string type, it is used
+ * for a CHOICE of character strings where the
+ * actual strings all occupy an ASN1_STRING
+ * structure. In this case the 'utype' field
+ * has a special meaning, it is used as a mask
+ * of acceptable types using the B_ASN1 constants.
+ *
+ * NDEF_SEQUENCE is the same as SEQUENCE except
+ * that it will use indefinite length constructed
+ * encoding if requested.
+ *
+ */
+
+#define ASN1_ITYPE_PRIMITIVE		0x0
+
+#define ASN1_ITYPE_SEQUENCE		0x1
+
+#define ASN1_ITYPE_CHOICE		0x2
+
+#define ASN1_ITYPE_COMPAT		0x3
+
+#define ASN1_ITYPE_EXTERN		0x4
+
+#define ASN1_ITYPE_MSTRING		0x5
+
+#define ASN1_ITYPE_NDEF_SEQUENCE	0x6
+
+/* Cache for ASN1 tag and length, so we
+ * don't keep re-reading it for things
+ * like CHOICE
+ */
+
+struct ASN1_TLC_st{
+	char valid;	/* Values below are valid */
+	int ret;	/* return value */
+	long plen;	/* length */
+	int ptag;	/* class value */
+	int pclass;	/* class value */
+	int hdrlen;	/* header length */
+};
+
+/* Typedefs for ASN1 function pointers */
+
+typedef ASN1_VALUE * ASN1_new_func(void);
+typedef void ASN1_free_func(ASN1_VALUE *a);
+typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, const unsigned char ** in, long length);
+typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in);
+
+typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+					int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+typedef int ASN1_ex_print_func(BIO *out, ASN1_VALUE **pval, 
+						int indent, const char *fname, 
+						const ASN1_PCTX *pctx);
+
+typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+typedef int ASN1_primitive_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent, const ASN1_PCTX *pctx);
+
+typedef struct ASN1_COMPAT_FUNCS_st {
+	ASN1_new_func *asn1_new;
+	ASN1_free_func *asn1_free;
+	ASN1_d2i_func *asn1_d2i;
+	ASN1_i2d_func *asn1_i2d;
+} ASN1_COMPAT_FUNCS;
+
+typedef struct ASN1_EXTERN_FUNCS_st {
+	void *app_data;
+	ASN1_ex_new_func *asn1_ex_new;
+	ASN1_ex_free_func *asn1_ex_free;
+	ASN1_ex_free_func *asn1_ex_clear;
+	ASN1_ex_d2i *asn1_ex_d2i;
+	ASN1_ex_i2d *asn1_ex_i2d;
+	/* asn1_ex_print is unused. */
+	ASN1_ex_print_func *asn1_ex_print;
+} ASN1_EXTERN_FUNCS;
+
+typedef struct ASN1_PRIMITIVE_FUNCS_st {
+	void *app_data;
+	unsigned long flags;
+	ASN1_ex_new_func *prim_new;
+	ASN1_ex_free_func *prim_free;
+	ASN1_ex_free_func *prim_clear;
+	ASN1_primitive_c2i *prim_c2i;
+	ASN1_primitive_i2c *prim_i2c;
+	ASN1_primitive_print *prim_print;
+} ASN1_PRIMITIVE_FUNCS;
+
+/* This is the ASN1_AUX structure: it handles various
+ * miscellaneous requirements. For example the use of
+ * reference counts and an informational callback.
+ *
+ * The "informational callback" is called at various
+ * points during the ASN1 encoding and decoding. It can
+ * be used to provide minor customisation of the structures
+ * used. This is most useful where the supplied routines
+ * *almost* do the right thing but need some extra help
+ * at a few points. If the callback returns zero then
+ * it is assumed a fatal error has occurred and the 
+ * main operation should be abandoned.
+ *
+ * If major changes in the default behaviour are required
+ * then an external type is more appropriate.
+ */
+
+typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it,
+				void *exarg);
+
+typedef struct ASN1_AUX_st {
+	void *app_data;
+	int flags;
+	int ref_offset;		/* Offset of reference value */
+	ASN1_aux_cb *asn1_cb;
+	int enc_offset;		/* Offset of ASN1_ENCODING structure */
+} ASN1_AUX;
+
+/* For print related callbacks exarg points to this structure */
+typedef struct ASN1_PRINT_ARG_st {
+	BIO *out;
+	int indent;
+	const ASN1_PCTX *pctx;
+} ASN1_PRINT_ARG;
+
+/* For streaming related callbacks exarg points to this structure */
+typedef struct ASN1_STREAM_ARG_st {
+	/* BIO to stream through */
+	BIO *out;
+	/* BIO with filters appended */
+	BIO *ndef_bio;
+	/* Streaming I/O boundary */
+	unsigned char **boundary;
+} ASN1_STREAM_ARG;
+
+/* Flags in ASN1_AUX */
+
+/* Use a reference count */
+#define ASN1_AFLG_REFCOUNT	1
+/* Save the encoding of structure (useful for signatures) */
+#define ASN1_AFLG_ENCODING	2
+/* The Sequence length is invalid */
+#define ASN1_AFLG_BROKEN	4
+
+/* operation values for asn1_cb */
+
+#define ASN1_OP_NEW_PRE		0
+#define ASN1_OP_NEW_POST	1
+#define ASN1_OP_FREE_PRE	2
+#define ASN1_OP_FREE_POST	3
+#define ASN1_OP_D2I_PRE		4
+#define ASN1_OP_D2I_POST	5
+#define ASN1_OP_I2D_PRE		6
+#define ASN1_OP_I2D_POST	7
+#define ASN1_OP_PRINT_PRE	8
+#define ASN1_OP_PRINT_POST	9
+#define ASN1_OP_STREAM_PRE	10
+#define ASN1_OP_STREAM_POST	11
+#define ASN1_OP_DETACHED_PRE	12
+#define ASN1_OP_DETACHED_POST	13
+
+/* Macro to implement a primitive type */
+#define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
+#define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement a multi string type */
+#define IMPLEMENT_ASN1_MSTRING(itname, mask) \
+				ASN1_ITEM_start(itname) \
+					ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
+				ASN1_ITEM_end(itname)
+
+/* Macro to implement an ASN1_ITEM in terms of old style funcs */
+
+#define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)
+
+#define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
+	static const ASN1_COMPAT_FUNCS sname##_ff = { \
+		(ASN1_new_func *)sname##_new, \
+		(ASN1_free_func *)sname##_free, \
+		(ASN1_d2i_func *)d2i_##sname, \
+		(ASN1_i2d_func *)i2d_##sname, \
+	}; \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_COMPAT, \
+		tag, \
+		NULL, \
+		0, \
+		&sname##_ff, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+#define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
+	ASN1_ITEM_start(sname) \
+		ASN1_ITYPE_EXTERN, \
+		tag, \
+		NULL, \
+		0, \
+		&fptrs, \
+		0, \
+		#sname \
+	ASN1_ITEM_end(sname)
+
+/* Macro to implement standard functions in terms of ASN1_ITEM structures */
+
+#define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
+			IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)
+
+#define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
+		IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \
+	pre stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	pre void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
+	stname *fname##_new(void) \
+	{ \
+		return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
+	} \
+	void fname##_free(stname *a) \
+	{ \
+		ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
+	}
+
+#define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
+	int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
+	} 
+
+/* This includes evil casts to remove const: they will go away when full
+ * ASN1 constification is done.
+ */
+#define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
+	{ \
+		return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
+	} \
+	int i2d_##fname(const stname *a, unsigned char **out) \
+	{ \
+		return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
+	} 
+
+#define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
+	stname * stname##_dup(stname *x) \
+        { \
+        return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
+        }
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
+		IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)
+
+#define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
+	IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
+
+/* external definitions for primitive types */
+
+DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
+DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
+
+DEFINE_STACK_OF(ASN1_VALUE)
+
+/* Functions used internally by the ASN1 code */
+
+int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
+				int tag, int aclass, char opt, ASN1_TLC *ctx);
+
+int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+
+int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
+
+ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
+
+const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr);
+
+void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
+void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it);
+int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen, const ASN1_ITEM *it);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h
new file mode 100644
index 0000000..5a78ac4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h	
@@ -0,0 +1,571 @@
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_BASE_H
+#define OPENSSL_HEADER_BASE_H
+
+
+// This file should be the first included by all BoringSSL headers.
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#if defined(__MINGW32__)
+// stdio.h is needed on MinGW for __MINGW_PRINTF_FORMAT.
+#include <stdio.h>
+#endif
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
+// Include a BoringSSL-only header so consumers including this header without
+// setting up include paths do not accidentally pick up the system
+// opensslconf.h.
+#include <openssl_grpc/is_boringssl.h>
+#include <openssl_grpc/opensslconf.h>
+
+#if defined(BORINGSSL_PREFIX)
+#include <boringssl_prefix_symbols.h>
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64)
+#define OPENSSL_64_BIT
+#define OPENSSL_X86_64
+#elif defined(__x86) || defined(__i386) || defined(__i386__) || defined(_M_IX86)
+#define OPENSSL_32_BIT
+#define OPENSSL_X86
+#elif defined(__aarch64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_AARCH64
+#elif defined(__arm) || defined(__arm__) || defined(_M_ARM)
+#define OPENSSL_32_BIT
+#define OPENSSL_ARM
+#elif (defined(__PPC64__) || defined(__powerpc64__)) && defined(_LITTLE_ENDIAN)
+#define OPENSSL_64_BIT
+#define OPENSSL_PPC64LE
+#elif defined(__mips__) && !defined(__LP64__)
+#define OPENSSL_32_BIT
+#define OPENSSL_MIPS
+#elif defined(__mips__) && defined(__LP64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_MIPS64
+#elif defined(__pnacl__)
+#define OPENSSL_32_BIT
+#define OPENSSL_PNACL
+#elif defined(__wasm__)
+#define OPENSSL_32_BIT
+#elif defined(__asmjs__)
+#define OPENSSL_32_BIT
+#elif defined(__myriad2__)
+#define OPENSSL_32_BIT
+#else
+// Note BoringSSL only supports standard 32-bit and 64-bit two's-complement,
+// little-endian architectures. Functions will not produce the correct answer
+// on other systems. Run the crypto_test binary, notably
+// crypto/compiler_test.cc, before adding a new architecture.
+#error "Unknown target CPU"
+#endif
+
+#if defined(__APPLE__)
+#define OPENSSL_APPLE
+// Note |TARGET_OS_MAC| is set for all Apple OS variants. |TARGET_OS_OSX|
+// targets macOS specifically.
+#if defined(TARGET_OS_OSX) && TARGET_OS_OSX
+#define OPENSSL_MACOS
+#endif
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#define OPENSSL_IOS
+#endif
+#endif
+
+#if defined(_WIN32)
+#define OPENSSL_WINDOWS
+#endif
+
+#if defined(__linux__)
+#define OPENSSL_LINUX
+#endif
+
+#if defined(__Fuchsia__)
+#define OPENSSL_FUCHSIA
+#endif
+
+#if defined(TRUSTY)
+#define OPENSSL_TRUSTY
+#define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED
+#endif
+
+#if defined(__ANDROID_API__)
+#define OPENSSL_ANDROID
+#endif
+
+// BoringSSL requires platform's locking APIs to make internal global state
+// thread-safe, including the PRNG. On some single-threaded embedded platforms,
+// locking APIs may not exist, so this dependency may be disabled with the
+// following build flag.
+//
+// IMPORTANT: Doing so means the consumer promises the library will never be
+// used in any multi-threaded context. It causes BoringSSL to be globally
+// thread-unsafe. Setting it inappropriately will subtly and unpredictably
+// corrupt memory and leak secret keys.
+//
+// Do not set this flag on any platform where threads are possible. BoringSSL
+// maintainers will not provide support for any consumers that do so. Changes
+// which break such unsupported configurations will not be reverted.
+#if !defined(OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED)
+#define OPENSSL_THREADS
+#endif
+
+#define OPENSSL_IS_BORINGSSL
+#define OPENSSL_VERSION_NUMBER 0x1010007f
+#define SSLEAY_VERSION_NUMBER OPENSSL_VERSION_NUMBER
+
+// BORINGSSL_API_VERSION is a positive integer that increments as BoringSSL
+// changes over time. The value itself is not meaningful. It will be incremented
+// whenever is convenient to coordinate an API change with consumers. This will
+// not denote any special point in development.
+//
+// A consumer may use this symbol in the preprocessor to temporarily build
+// against multiple revisions of BoringSSL at the same time. It is not
+// recommended to do so for longer than is necessary.
+#define BORINGSSL_API_VERSION 9
+
+#if defined(BORINGSSL_SHARED_LIBRARY)
+
+#if defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __declspec(dllexport)
+#else
+#define OPENSSL_EXPORT __declspec(dllimport)
+#endif
+
+#else  // defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __attribute__((visibility("default")))
+#else
+#define OPENSSL_EXPORT
+#endif
+
+#endif  // defined(OPENSSL_WINDOWS)
+
+#else  // defined(BORINGSSL_SHARED_LIBRARY)
+
+#define OPENSSL_EXPORT
+
+#endif  // defined(BORINGSSL_SHARED_LIBRARY)
+
+
+#if defined(__GNUC__) || defined(__clang__)
+// MinGW has two different printf implementations. Ensure the format macro
+// matches the selected implementation. See
+// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/.
+#if defined(__MINGW_PRINTF_FORMAT)
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__(                                                 \
+      (__format__(__MINGW_PRINTF_FORMAT, string_index, first_to_check)))
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__((__format__(__printf__, string_index, first_to_check)))
+#endif
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check)
+#endif
+
+// OPENSSL_MSVC_PRAGMA emits a pragma on MSVC and nothing on other compilers.
+#if defined(_MSC_VER)
+#define OPENSSL_MSVC_PRAGMA(arg) __pragma(arg)
+#else
+#define OPENSSL_MSVC_PRAGMA(arg)
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#define OPENSSL_UNUSED __attribute__((unused))
+#else
+#define OPENSSL_UNUSED
+#endif
+
+// C and C++ handle inline functions differently. In C++, an inline function is
+// defined in just the header file, potentially emitted in multiple compilation
+// units (in cases the compiler did not inline), but each copy must be identical
+// to satsify ODR. In C, a non-static inline must be manually emitted in exactly
+// one compilation unit with a separate extern inline declaration.
+//
+// In both languages, exported inline functions referencing file-local symbols
+// are problematic. C forbids this altogether (though GCC and Clang seem not to
+// enforce it). It works in C++, but ODR requires the definitions be identical,
+// including all names in the definitions resolving to the "same entity". In
+// practice, this is unlikely to be a problem, but an inline function that
+// returns a pointer to a file-local symbol
+// could compile oddly.
+//
+// Historically, we used static inline in headers. However, to satisfy ODR, use
+// plain inline in C++, to allow inline consumer functions to call our header
+// functions. Plain inline would also work better with C99 inline, but that is
+// not used much in practice, extern inline is tedious, and there are conflicts
+// with the old gnu89 model:
+// https://stackoverflow.com/questions/216510/extern-inline
+#if defined(__cplusplus)
+#define OPENSSL_INLINE inline
+#else
+// Add OPENSSL_UNUSED so that, should an inline function be emitted via macro
+// (e.g. a |STACK_OF(T)| implementation) in a source file without tripping
+// clang's -Wunused-function.
+#define OPENSSL_INLINE static inline OPENSSL_UNUSED
+#endif
+
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+#define BORINGSSL_UNSAFE_DETERMINISTIC_MODE
+#endif
+
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define OPENSSL_ASAN
+#endif
+#if __has_feature(thread_sanitizer)
+#define OPENSSL_TSAN
+#endif
+#if __has_feature(memory_sanitizer)
+#define OPENSSL_MSAN
+#define OPENSSL_ASM_INCOMPATIBLE
+#endif
+#endif
+
+#if defined(OPENSSL_ASM_INCOMPATIBLE)
+#undef OPENSSL_ASM_INCOMPATIBLE
+#if !defined(OPENSSL_NO_ASM)
+#define OPENSSL_NO_ASM
+#endif
+#endif  // OPENSSL_ASM_INCOMPATIBLE
+
+#if defined(__cplusplus)
+// enums can be predeclared, but only in C++ and only if given an explicit type.
+// C doesn't support setting an explicit type for enums thus a #define is used
+// to do this only for C++. However, the ABI type between C and C++ need to have
+// equal sizes, which is confirmed in a unittest.
+#define BORINGSSL_ENUM_INT : int
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT;
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT;
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT;
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT;
+enum ssl_verify_result_t BORINGSSL_ENUM_INT;
+#else
+#define BORINGSSL_ENUM_INT
+#endif
+
+// CRYPTO_THREADID is a dummy value.
+typedef int CRYPTO_THREADID;
+
+typedef int ASN1_BOOLEAN;
+typedef int ASN1_NULL;
+typedef struct ASN1_ITEM_st ASN1_ITEM;
+typedef struct asn1_object_st ASN1_OBJECT;
+typedef struct asn1_pctx_st ASN1_PCTX;
+typedef struct asn1_string_st ASN1_BIT_STRING;
+typedef struct asn1_string_st ASN1_BMPSTRING;
+typedef struct asn1_string_st ASN1_ENUMERATED;
+typedef struct asn1_string_st ASN1_GENERALIZEDTIME;
+typedef struct asn1_string_st ASN1_GENERALSTRING;
+typedef struct asn1_string_st ASN1_IA5STRING;
+typedef struct asn1_string_st ASN1_INTEGER;
+typedef struct asn1_string_st ASN1_OCTET_STRING;
+typedef struct asn1_string_st ASN1_PRINTABLESTRING;
+typedef struct asn1_string_st ASN1_STRING;
+typedef struct asn1_string_st ASN1_T61STRING;
+typedef struct asn1_string_st ASN1_TIME;
+typedef struct asn1_string_st ASN1_UNIVERSALSTRING;
+typedef struct asn1_string_st ASN1_UTCTIME;
+typedef struct asn1_string_st ASN1_UTF8STRING;
+typedef struct asn1_string_st ASN1_VISIBLESTRING;
+typedef struct asn1_type_st ASN1_TYPE;
+typedef struct AUTHORITY_KEYID_st AUTHORITY_KEYID;
+typedef struct BASIC_CONSTRAINTS_st BASIC_CONSTRAINTS;
+typedef struct DIST_POINT_st DIST_POINT;
+typedef struct DSA_SIG_st DSA_SIG;
+typedef struct ISSUING_DIST_POINT_st ISSUING_DIST_POINT;
+typedef struct NAME_CONSTRAINTS_st NAME_CONSTRAINTS;
+typedef struct Netscape_spkac_st NETSCAPE_SPKAC;
+typedef struct Netscape_spki_st NETSCAPE_SPKI;
+typedef struct RIPEMD160state_st RIPEMD160_CTX;
+typedef struct X509_POLICY_CACHE_st X509_POLICY_CACHE;
+typedef struct X509_POLICY_LEVEL_st X509_POLICY_LEVEL;
+typedef struct X509_POLICY_NODE_st X509_POLICY_NODE;
+typedef struct X509_POLICY_TREE_st X509_POLICY_TREE;
+typedef struct X509_VERIFY_PARAM_st X509_VERIFY_PARAM;
+typedef struct X509_algor_st X509_ALGOR;
+typedef struct X509_crl_info_st X509_CRL_INFO;
+typedef struct X509_crl_st X509_CRL;
+typedef struct X509_extension_st X509_EXTENSION;
+typedef struct X509_info_st X509_INFO;
+typedef struct X509_name_entry_st X509_NAME_ENTRY;
+typedef struct X509_name_st X509_NAME;
+typedef struct X509_pubkey_st X509_PUBKEY;
+typedef struct X509_req_info_st X509_REQ_INFO;
+typedef struct X509_req_st X509_REQ;
+typedef struct X509_sig_st X509_SIG;
+typedef struct X509_val_st X509_VAL;
+typedef struct bignum_ctx BN_CTX;
+typedef struct bignum_st BIGNUM;
+typedef struct bio_method_st BIO_METHOD;
+typedef struct bio_st BIO;
+typedef struct bn_gencb_st BN_GENCB;
+typedef struct bn_mont_ctx_st BN_MONT_CTX;
+typedef struct buf_mem_st BUF_MEM;
+typedef struct cbb_st CBB;
+typedef struct cbs_st CBS;
+typedef struct cmac_ctx_st CMAC_CTX;
+typedef struct conf_st CONF;
+typedef struct conf_value_st CONF_VALUE;
+typedef struct crypto_buffer_pool_st CRYPTO_BUFFER_POOL;
+typedef struct crypto_buffer_st CRYPTO_BUFFER;
+typedef struct dh_st DH;
+typedef struct dsa_st DSA;
+typedef struct ec_group_st EC_GROUP;
+typedef struct ec_key_st EC_KEY;
+typedef struct ec_point_st EC_POINT;
+typedef struct ecdsa_method_st ECDSA_METHOD;
+typedef struct ecdsa_sig_st ECDSA_SIG;
+typedef struct engine_st ENGINE;
+typedef struct env_md_ctx_st EVP_MD_CTX;
+typedef struct env_md_st EVP_MD;
+typedef struct evp_aead_st EVP_AEAD;
+typedef struct evp_cipher_ctx_st EVP_CIPHER_CTX;
+typedef struct evp_cipher_st EVP_CIPHER;
+typedef struct evp_encode_ctx_st EVP_ENCODE_CTX;
+typedef struct evp_pkey_asn1_method_st EVP_PKEY_ASN1_METHOD;
+typedef struct evp_pkey_ctx_st EVP_PKEY_CTX;
+typedef struct evp_pkey_method_st EVP_PKEY_METHOD;
+typedef struct evp_pkey_st EVP_PKEY;
+typedef struct hmac_ctx_st HMAC_CTX;
+typedef struct md4_state_st MD4_CTX;
+typedef struct md5_state_st MD5_CTX;
+typedef struct ossl_init_settings_st OPENSSL_INIT_SETTINGS;
+typedef struct pkcs12_st PKCS12;
+typedef struct pkcs8_priv_key_info_st PKCS8_PRIV_KEY_INFO;
+typedef struct private_key_st X509_PKEY;
+typedef struct rand_meth_st RAND_METHOD;
+typedef struct rc4_key_st RC4_KEY;
+typedef struct rsa_meth_st RSA_METHOD;
+typedef struct rsa_st RSA;
+typedef struct sha256_state_st SHA256_CTX;
+typedef struct sha512_state_st SHA512_CTX;
+typedef struct sha_state_st SHA_CTX;
+typedef struct spake2_ctx_st SPAKE2_CTX;
+typedef struct srtp_protection_profile_st SRTP_PROTECTION_PROFILE;
+typedef struct ssl_cipher_st SSL_CIPHER;
+typedef struct ssl_ctx_st SSL_CTX;
+typedef struct ssl_method_st SSL_METHOD;
+typedef struct ssl_private_key_method_st SSL_PRIVATE_KEY_METHOD;
+typedef struct ssl_quic_method_st SSL_QUIC_METHOD;
+typedef struct ssl_session_st SSL_SESSION;
+typedef struct ssl_st SSL;
+typedef struct ssl_ticket_aead_method_st SSL_TICKET_AEAD_METHOD;
+typedef struct st_ERR_FNS ERR_FNS;
+typedef struct v3_ext_ctx X509V3_CTX;
+typedef struct x509_attributes_st X509_ATTRIBUTE;
+typedef struct x509_cert_aux_st X509_CERT_AUX;
+typedef struct x509_cinf_st X509_CINF;
+typedef struct x509_crl_method_st X509_CRL_METHOD;
+typedef struct x509_lookup_st X509_LOOKUP;
+typedef struct x509_revoked_st X509_REVOKED;
+typedef struct x509_st X509;
+typedef struct x509_store_ctx_st X509_STORE_CTX;
+typedef struct x509_store_st X509_STORE;
+typedef struct x509_trust_st X509_TRUST;
+
+typedef void *OPENSSL_BLOCK;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#elif !defined(BORINGSSL_NO_CXX)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if defined(BORINGSSL_PREFIX)
+#define BSSL_NAMESPACE_BEGIN \
+  namespace bssl {           \
+  inline namespace BORINGSSL_PREFIX {
+#define BSSL_NAMESPACE_END \
+  }                        \
+  }
+#else
+#define BSSL_NAMESPACE_BEGIN namespace bssl {
+#define BSSL_NAMESPACE_END }
+#endif
+
+// MSVC doesn't set __cplusplus to 201103 to indicate C++11 support (see
+// https://connect.microsoft.com/VisualStudio/feedback/details/763051/a-value-of-predefined-macro-cplusplus-is-still-199711l)
+// so MSVC is just assumed to support C++11.
+#if !defined(BORINGSSL_NO_CXX) && __cplusplus < 201103L && !defined(_MSC_VER)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <memory>
+
+// STLPort, used by some Android consumers, not have std::unique_ptr.
+#if defined(_STLPORT_VERSION)
+#define BORINGSSL_NO_CXX
+#endif
+
+}  // extern C++
+#endif  // !BORINGSSL_NO_CXX
+
+#if defined(BORINGSSL_NO_CXX)
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)
+
+#else
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// The Enable parameter is ignored and only exists so specializations can use
+// SFINAE.
+template <typename T, typename Enable = void>
+struct DeleterImpl {};
+
+template <typename T>
+struct Deleter {
+  void operator()(T *ptr) {
+    // Rather than specialize Deleter for each type, we specialize
+    // DeleterImpl. This allows bssl::UniquePtr<T> to be used while only
+    // including base.h as long as the destructor is not emitted. This matches
+    // std::unique_ptr's behavior on forward-declared types.
+    //
+    // DeleterImpl itself is specialized in the corresponding module's header
+    // and must be included to release an object. If not included, the compiler
+    // will error that DeleterImpl<T> does not have a method Free.
+    DeleterImpl<T>::Free(ptr);
+  }
+};
+
+template <typename T, typename CleanupRet, void (*init)(T *),
+          CleanupRet (*cleanup)(T *)>
+class StackAllocated {
+ public:
+  StackAllocated() { init(&ctx_); }
+  ~StackAllocated() { cleanup(&ctx_); }
+
+  StackAllocated(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+  T& operator=(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+
+  T *get() { return &ctx_; }
+  const T *get() const { return &ctx_; }
+
+  T *operator->() { return &ctx_; }
+  const T *operator->() const { return &ctx_; }
+
+  void Reset() {
+    cleanup(&ctx_);
+    init(&ctx_);
+  }
+
+ private:
+  T ctx_;
+};
+
+}  // namespace internal
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)     \
+  namespace internal {                            \
+  template <>                                     \
+  struct DeleterImpl<type> {                      \
+    static void Free(type *ptr) { deleter(ptr); } \
+  };                                              \
+  }
+
+// Holds ownership of heap-allocated BoringSSL structures. Sample usage:
+//   bssl::UniquePtr<RSA> rsa(RSA_new());
+//   bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+template <typename T>
+using UniquePtr = std::unique_ptr<T, internal::Deleter<T>>;
+
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)             \
+  inline UniquePtr<type> UpRef(type *v) {                    \
+    if (v != nullptr) {                                      \
+      up_ref_func(v);                                        \
+    }                                                        \
+    return UniquePtr<type>(v);                               \
+  }                                                          \
+                                                             \
+  inline UniquePtr<type> UpRef(const UniquePtr<type> &ptr) { \
+    return UpRef(ptr.get());                                 \
+  }
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !BORINGSSL_NO_CXX
+
+#endif  // OPENSSL_HEADER_BASE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.back
new file mode 100644
index 0000000..e347c09
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.back	
@@ -0,0 +1,571 @@
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_BASE_H
+#define OPENSSL_HEADER_BASE_H
+
+
+// This file should be the first included by all BoringSSL headers.
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#if defined(__MINGW32__)
+// stdio.h is needed on MinGW for __MINGW_PRINTF_FORMAT.
+#include <stdio.h>
+#endif
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
+// Include a BoringSSL-only header so consumers including this header without
+// setting up include paths do not accidentally pick up the system
+// opensslconf.h.
+#include <openssl/is_boringssl.h>
+#include <openssl/opensslconf.h>
+
+#if defined(BORINGSSL_PREFIX)
+#include <boringssl_prefix_symbols.h>
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64)
+#define OPENSSL_64_BIT
+#define OPENSSL_X86_64
+#elif defined(__x86) || defined(__i386) || defined(__i386__) || defined(_M_IX86)
+#define OPENSSL_32_BIT
+#define OPENSSL_X86
+#elif defined(__aarch64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_AARCH64
+#elif defined(__arm) || defined(__arm__) || defined(_M_ARM)
+#define OPENSSL_32_BIT
+#define OPENSSL_ARM
+#elif (defined(__PPC64__) || defined(__powerpc64__)) && defined(_LITTLE_ENDIAN)
+#define OPENSSL_64_BIT
+#define OPENSSL_PPC64LE
+#elif defined(__mips__) && !defined(__LP64__)
+#define OPENSSL_32_BIT
+#define OPENSSL_MIPS
+#elif defined(__mips__) && defined(__LP64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_MIPS64
+#elif defined(__pnacl__)
+#define OPENSSL_32_BIT
+#define OPENSSL_PNACL
+#elif defined(__wasm__)
+#define OPENSSL_32_BIT
+#elif defined(__asmjs__)
+#define OPENSSL_32_BIT
+#elif defined(__myriad2__)
+#define OPENSSL_32_BIT
+#else
+// Note BoringSSL only supports standard 32-bit and 64-bit two's-complement,
+// little-endian architectures. Functions will not produce the correct answer
+// on other systems. Run the crypto_test binary, notably
+// crypto/compiler_test.cc, before adding a new architecture.
+#error "Unknown target CPU"
+#endif
+
+#if defined(__APPLE__)
+#define OPENSSL_APPLE
+// Note |TARGET_OS_MAC| is set for all Apple OS variants. |TARGET_OS_OSX|
+// targets macOS specifically.
+#if defined(TARGET_OS_OSX) && TARGET_OS_OSX
+#define OPENSSL_MACOS
+#endif
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#define OPENSSL_IOS
+#endif
+#endif
+
+#if defined(_WIN32)
+#define OPENSSL_WINDOWS
+#endif
+
+#if defined(__linux__)
+#define OPENSSL_LINUX
+#endif
+
+#if defined(__Fuchsia__)
+#define OPENSSL_FUCHSIA
+#endif
+
+#if defined(TRUSTY)
+#define OPENSSL_TRUSTY
+#define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED
+#endif
+
+#if defined(__ANDROID_API__)
+#define OPENSSL_ANDROID
+#endif
+
+// BoringSSL requires platform's locking APIs to make internal global state
+// thread-safe, including the PRNG. On some single-threaded embedded platforms,
+// locking APIs may not exist, so this dependency may be disabled with the
+// following build flag.
+//
+// IMPORTANT: Doing so means the consumer promises the library will never be
+// used in any multi-threaded context. It causes BoringSSL to be globally
+// thread-unsafe. Setting it inappropriately will subtly and unpredictably
+// corrupt memory and leak secret keys.
+//
+// Do not set this flag on any platform where threads are possible. BoringSSL
+// maintainers will not provide support for any consumers that do so. Changes
+// which break such unsupported configurations will not be reverted.
+#if !defined(OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED)
+#define OPENSSL_THREADS
+#endif
+
+#define OPENSSL_IS_BORINGSSL
+#define OPENSSL_VERSION_NUMBER 0x1010007f
+#define SSLEAY_VERSION_NUMBER OPENSSL_VERSION_NUMBER
+
+// BORINGSSL_API_VERSION is a positive integer that increments as BoringSSL
+// changes over time. The value itself is not meaningful. It will be incremented
+// whenever is convenient to coordinate an API change with consumers. This will
+// not denote any special point in development.
+//
+// A consumer may use this symbol in the preprocessor to temporarily build
+// against multiple revisions of BoringSSL at the same time. It is not
+// recommended to do so for longer than is necessary.
+#define BORINGSSL_API_VERSION 9
+
+#if defined(BORINGSSL_SHARED_LIBRARY)
+
+#if defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __declspec(dllexport)
+#else
+#define OPENSSL_EXPORT __declspec(dllimport)
+#endif
+
+#else  // defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __attribute__((visibility("default")))
+#else
+#define OPENSSL_EXPORT
+#endif
+
+#endif  // defined(OPENSSL_WINDOWS)
+
+#else  // defined(BORINGSSL_SHARED_LIBRARY)
+
+#define OPENSSL_EXPORT
+
+#endif  // defined(BORINGSSL_SHARED_LIBRARY)
+
+
+#if defined(__GNUC__) || defined(__clang__)
+// MinGW has two different printf implementations. Ensure the format macro
+// matches the selected implementation. See
+// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/.
+#if defined(__MINGW_PRINTF_FORMAT)
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__(                                                 \
+      (__format__(__MINGW_PRINTF_FORMAT, string_index, first_to_check)))
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__((__format__(__printf__, string_index, first_to_check)))
+#endif
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check)
+#endif
+
+// OPENSSL_MSVC_PRAGMA emits a pragma on MSVC and nothing on other compilers.
+#if defined(_MSC_VER)
+#define OPENSSL_MSVC_PRAGMA(arg) __pragma(arg)
+#else
+#define OPENSSL_MSVC_PRAGMA(arg)
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#define OPENSSL_UNUSED __attribute__((unused))
+#else
+#define OPENSSL_UNUSED
+#endif
+
+// C and C++ handle inline functions differently. In C++, an inline function is
+// defined in just the header file, potentially emitted in multiple compilation
+// units (in cases the compiler did not inline), but each copy must be identical
+// to satsify ODR. In C, a non-static inline must be manually emitted in exactly
+// one compilation unit with a separate extern inline declaration.
+//
+// In both languages, exported inline functions referencing file-local symbols
+// are problematic. C forbids this altogether (though GCC and Clang seem not to
+// enforce it). It works in C++, but ODR requires the definitions be identical,
+// including all names in the definitions resolving to the "same entity". In
+// practice, this is unlikely to be a problem, but an inline function that
+// returns a pointer to a file-local symbol
+// could compile oddly.
+//
+// Historically, we used static inline in headers. However, to satisfy ODR, use
+// plain inline in C++, to allow inline consumer functions to call our header
+// functions. Plain inline would also work better with C99 inline, but that is
+// not used much in practice, extern inline is tedious, and there are conflicts
+// with the old gnu89 model:
+// https://stackoverflow.com/questions/216510/extern-inline
+#if defined(__cplusplus)
+#define OPENSSL_INLINE inline
+#else
+// Add OPENSSL_UNUSED so that, should an inline function be emitted via macro
+// (e.g. a |STACK_OF(T)| implementation) in a source file without tripping
+// clang's -Wunused-function.
+#define OPENSSL_INLINE static inline OPENSSL_UNUSED
+#endif
+
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+#define BORINGSSL_UNSAFE_DETERMINISTIC_MODE
+#endif
+
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define OPENSSL_ASAN
+#endif
+#if __has_feature(thread_sanitizer)
+#define OPENSSL_TSAN
+#endif
+#if __has_feature(memory_sanitizer)
+#define OPENSSL_MSAN
+#define OPENSSL_ASM_INCOMPATIBLE
+#endif
+#endif
+
+#if defined(OPENSSL_ASM_INCOMPATIBLE)
+#undef OPENSSL_ASM_INCOMPATIBLE
+#if !defined(OPENSSL_NO_ASM)
+#define OPENSSL_NO_ASM
+#endif
+#endif  // OPENSSL_ASM_INCOMPATIBLE
+
+#if defined(__cplusplus)
+// enums can be predeclared, but only in C++ and only if given an explicit type.
+// C doesn't support setting an explicit type for enums thus a #define is used
+// to do this only for C++. However, the ABI type between C and C++ need to have
+// equal sizes, which is confirmed in a unittest.
+#define BORINGSSL_ENUM_INT : int
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT;
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT;
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT;
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT;
+enum ssl_verify_result_t BORINGSSL_ENUM_INT;
+#else
+#define BORINGSSL_ENUM_INT
+#endif
+
+// CRYPTO_THREADID is a dummy value.
+typedef int CRYPTO_THREADID;
+
+typedef int ASN1_BOOLEAN;
+typedef int ASN1_NULL;
+typedef struct ASN1_ITEM_st ASN1_ITEM;
+typedef struct asn1_object_st ASN1_OBJECT;
+typedef struct asn1_pctx_st ASN1_PCTX;
+typedef struct asn1_string_st ASN1_BIT_STRING;
+typedef struct asn1_string_st ASN1_BMPSTRING;
+typedef struct asn1_string_st ASN1_ENUMERATED;
+typedef struct asn1_string_st ASN1_GENERALIZEDTIME;
+typedef struct asn1_string_st ASN1_GENERALSTRING;
+typedef struct asn1_string_st ASN1_IA5STRING;
+typedef struct asn1_string_st ASN1_INTEGER;
+typedef struct asn1_string_st ASN1_OCTET_STRING;
+typedef struct asn1_string_st ASN1_PRINTABLESTRING;
+typedef struct asn1_string_st ASN1_STRING;
+typedef struct asn1_string_st ASN1_T61STRING;
+typedef struct asn1_string_st ASN1_TIME;
+typedef struct asn1_string_st ASN1_UNIVERSALSTRING;
+typedef struct asn1_string_st ASN1_UTCTIME;
+typedef struct asn1_string_st ASN1_UTF8STRING;
+typedef struct asn1_string_st ASN1_VISIBLESTRING;
+typedef struct asn1_type_st ASN1_TYPE;
+typedef struct AUTHORITY_KEYID_st AUTHORITY_KEYID;
+typedef struct BASIC_CONSTRAINTS_st BASIC_CONSTRAINTS;
+typedef struct DIST_POINT_st DIST_POINT;
+typedef struct DSA_SIG_st DSA_SIG;
+typedef struct ISSUING_DIST_POINT_st ISSUING_DIST_POINT;
+typedef struct NAME_CONSTRAINTS_st NAME_CONSTRAINTS;
+typedef struct Netscape_spkac_st NETSCAPE_SPKAC;
+typedef struct Netscape_spki_st NETSCAPE_SPKI;
+typedef struct RIPEMD160state_st RIPEMD160_CTX;
+typedef struct X509_POLICY_CACHE_st X509_POLICY_CACHE;
+typedef struct X509_POLICY_LEVEL_st X509_POLICY_LEVEL;
+typedef struct X509_POLICY_NODE_st X509_POLICY_NODE;
+typedef struct X509_POLICY_TREE_st X509_POLICY_TREE;
+typedef struct X509_VERIFY_PARAM_st X509_VERIFY_PARAM;
+typedef struct X509_algor_st X509_ALGOR;
+typedef struct X509_crl_info_st X509_CRL_INFO;
+typedef struct X509_crl_st X509_CRL;
+typedef struct X509_extension_st X509_EXTENSION;
+typedef struct X509_info_st X509_INFO;
+typedef struct X509_name_entry_st X509_NAME_ENTRY;
+typedef struct X509_name_st X509_NAME;
+typedef struct X509_pubkey_st X509_PUBKEY;
+typedef struct X509_req_info_st X509_REQ_INFO;
+typedef struct X509_req_st X509_REQ;
+typedef struct X509_sig_st X509_SIG;
+typedef struct X509_val_st X509_VAL;
+typedef struct bignum_ctx BN_CTX;
+typedef struct bignum_st BIGNUM;
+typedef struct bio_method_st BIO_METHOD;
+typedef struct bio_st BIO;
+typedef struct bn_gencb_st BN_GENCB;
+typedef struct bn_mont_ctx_st BN_MONT_CTX;
+typedef struct buf_mem_st BUF_MEM;
+typedef struct cbb_st CBB;
+typedef struct cbs_st CBS;
+typedef struct cmac_ctx_st CMAC_CTX;
+typedef struct conf_st CONF;
+typedef struct conf_value_st CONF_VALUE;
+typedef struct crypto_buffer_pool_st CRYPTO_BUFFER_POOL;
+typedef struct crypto_buffer_st CRYPTO_BUFFER;
+typedef struct dh_st DH;
+typedef struct dsa_st DSA;
+typedef struct ec_group_st EC_GROUP;
+typedef struct ec_key_st EC_KEY;
+typedef struct ec_point_st EC_POINT;
+typedef struct ecdsa_method_st ECDSA_METHOD;
+typedef struct ecdsa_sig_st ECDSA_SIG;
+typedef struct engine_st ENGINE;
+typedef struct env_md_ctx_st EVP_MD_CTX;
+typedef struct env_md_st EVP_MD;
+typedef struct evp_aead_st EVP_AEAD;
+typedef struct evp_cipher_ctx_st EVP_CIPHER_CTX;
+typedef struct evp_cipher_st EVP_CIPHER;
+typedef struct evp_encode_ctx_st EVP_ENCODE_CTX;
+typedef struct evp_pkey_asn1_method_st EVP_PKEY_ASN1_METHOD;
+typedef struct evp_pkey_ctx_st EVP_PKEY_CTX;
+typedef struct evp_pkey_method_st EVP_PKEY_METHOD;
+typedef struct evp_pkey_st EVP_PKEY;
+typedef struct hmac_ctx_st HMAC_CTX;
+typedef struct md4_state_st MD4_CTX;
+typedef struct md5_state_st MD5_CTX;
+typedef struct ossl_init_settings_st OPENSSL_INIT_SETTINGS;
+typedef struct pkcs12_st PKCS12;
+typedef struct pkcs8_priv_key_info_st PKCS8_PRIV_KEY_INFO;
+typedef struct private_key_st X509_PKEY;
+typedef struct rand_meth_st RAND_METHOD;
+typedef struct rc4_key_st RC4_KEY;
+typedef struct rsa_meth_st RSA_METHOD;
+typedef struct rsa_st RSA;
+typedef struct sha256_state_st SHA256_CTX;
+typedef struct sha512_state_st SHA512_CTX;
+typedef struct sha_state_st SHA_CTX;
+typedef struct spake2_ctx_st SPAKE2_CTX;
+typedef struct srtp_protection_profile_st SRTP_PROTECTION_PROFILE;
+typedef struct ssl_cipher_st SSL_CIPHER;
+typedef struct ssl_ctx_st SSL_CTX;
+typedef struct ssl_method_st SSL_METHOD;
+typedef struct ssl_private_key_method_st SSL_PRIVATE_KEY_METHOD;
+typedef struct ssl_quic_method_st SSL_QUIC_METHOD;
+typedef struct ssl_session_st SSL_SESSION;
+typedef struct ssl_st SSL;
+typedef struct ssl_ticket_aead_method_st SSL_TICKET_AEAD_METHOD;
+typedef struct st_ERR_FNS ERR_FNS;
+typedef struct v3_ext_ctx X509V3_CTX;
+typedef struct x509_attributes_st X509_ATTRIBUTE;
+typedef struct x509_cert_aux_st X509_CERT_AUX;
+typedef struct x509_cinf_st X509_CINF;
+typedef struct x509_crl_method_st X509_CRL_METHOD;
+typedef struct x509_lookup_st X509_LOOKUP;
+typedef struct x509_revoked_st X509_REVOKED;
+typedef struct x509_st X509;
+typedef struct x509_store_ctx_st X509_STORE_CTX;
+typedef struct x509_store_st X509_STORE;
+typedef struct x509_trust_st X509_TRUST;
+
+typedef void *OPENSSL_BLOCK;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#elif !defined(BORINGSSL_NO_CXX)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if defined(BORINGSSL_PREFIX)
+#define BSSL_NAMESPACE_BEGIN \
+  namespace bssl {           \
+  inline namespace BORINGSSL_PREFIX {
+#define BSSL_NAMESPACE_END \
+  }                        \
+  }
+#else
+#define BSSL_NAMESPACE_BEGIN namespace bssl {
+#define BSSL_NAMESPACE_END }
+#endif
+
+// MSVC doesn't set __cplusplus to 201103 to indicate C++11 support (see
+// https://connect.microsoft.com/VisualStudio/feedback/details/763051/a-value-of-predefined-macro-cplusplus-is-still-199711l)
+// so MSVC is just assumed to support C++11.
+#if !defined(BORINGSSL_NO_CXX) && __cplusplus < 201103L && !defined(_MSC_VER)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <memory>
+
+// STLPort, used by some Android consumers, not have std::unique_ptr.
+#if defined(_STLPORT_VERSION)
+#define BORINGSSL_NO_CXX
+#endif
+
+}  // extern C++
+#endif  // !BORINGSSL_NO_CXX
+
+#if defined(BORINGSSL_NO_CXX)
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)
+
+#else
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// The Enable parameter is ignored and only exists so specializations can use
+// SFINAE.
+template <typename T, typename Enable = void>
+struct DeleterImpl {};
+
+template <typename T>
+struct Deleter {
+  void operator()(T *ptr) {
+    // Rather than specialize Deleter for each type, we specialize
+    // DeleterImpl. This allows bssl::UniquePtr<T> to be used while only
+    // including base.h as long as the destructor is not emitted. This matches
+    // std::unique_ptr's behavior on forward-declared types.
+    //
+    // DeleterImpl itself is specialized in the corresponding module's header
+    // and must be included to release an object. If not included, the compiler
+    // will error that DeleterImpl<T> does not have a method Free.
+    DeleterImpl<T>::Free(ptr);
+  }
+};
+
+template <typename T, typename CleanupRet, void (*init)(T *),
+          CleanupRet (*cleanup)(T *)>
+class StackAllocated {
+ public:
+  StackAllocated() { init(&ctx_); }
+  ~StackAllocated() { cleanup(&ctx_); }
+
+  StackAllocated(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+  T& operator=(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+
+  T *get() { return &ctx_; }
+  const T *get() const { return &ctx_; }
+
+  T *operator->() { return &ctx_; }
+  const T *operator->() const { return &ctx_; }
+
+  void Reset() {
+    cleanup(&ctx_);
+    init(&ctx_);
+  }
+
+ private:
+  T ctx_;
+};
+
+}  // namespace internal
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)     \
+  namespace internal {                            \
+  template <>                                     \
+  struct DeleterImpl<type> {                      \
+    static void Free(type *ptr) { deleter(ptr); } \
+  };                                              \
+  }
+
+// Holds ownership of heap-allocated BoringSSL structures. Sample usage:
+//   bssl::UniquePtr<RSA> rsa(RSA_new());
+//   bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+template <typename T>
+using UniquePtr = std::unique_ptr<T, internal::Deleter<T>>;
+
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)             \
+  inline UniquePtr<type> UpRef(type *v) {                    \
+    if (v != nullptr) {                                      \
+      up_ref_func(v);                                        \
+    }                                                        \
+    return UniquePtr<type>(v);                               \
+  }                                                          \
+                                                             \
+  inline UniquePtr<type> UpRef(const UniquePtr<type> &ptr) { \
+    return UpRef(ptr.get());                                 \
+  }
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !BORINGSSL_NO_CXX
+
+#endif  // OPENSSL_HEADER_BASE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.grpc_back
new file mode 100644
index 0000000..e347c09
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base.h.grpc_back	
@@ -0,0 +1,571 @@
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_BASE_H
+#define OPENSSL_HEADER_BASE_H
+
+
+// This file should be the first included by all BoringSSL headers.
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#if defined(__MINGW32__)
+// stdio.h is needed on MinGW for __MINGW_PRINTF_FORMAT.
+#include <stdio.h>
+#endif
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
+// Include a BoringSSL-only header so consumers including this header without
+// setting up include paths do not accidentally pick up the system
+// opensslconf.h.
+#include <openssl/is_boringssl.h>
+#include <openssl/opensslconf.h>
+
+#if defined(BORINGSSL_PREFIX)
+#include <boringssl_prefix_symbols.h>
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64)
+#define OPENSSL_64_BIT
+#define OPENSSL_X86_64
+#elif defined(__x86) || defined(__i386) || defined(__i386__) || defined(_M_IX86)
+#define OPENSSL_32_BIT
+#define OPENSSL_X86
+#elif defined(__aarch64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_AARCH64
+#elif defined(__arm) || defined(__arm__) || defined(_M_ARM)
+#define OPENSSL_32_BIT
+#define OPENSSL_ARM
+#elif (defined(__PPC64__) || defined(__powerpc64__)) && defined(_LITTLE_ENDIAN)
+#define OPENSSL_64_BIT
+#define OPENSSL_PPC64LE
+#elif defined(__mips__) && !defined(__LP64__)
+#define OPENSSL_32_BIT
+#define OPENSSL_MIPS
+#elif defined(__mips__) && defined(__LP64__)
+#define OPENSSL_64_BIT
+#define OPENSSL_MIPS64
+#elif defined(__pnacl__)
+#define OPENSSL_32_BIT
+#define OPENSSL_PNACL
+#elif defined(__wasm__)
+#define OPENSSL_32_BIT
+#elif defined(__asmjs__)
+#define OPENSSL_32_BIT
+#elif defined(__myriad2__)
+#define OPENSSL_32_BIT
+#else
+// Note BoringSSL only supports standard 32-bit and 64-bit two's-complement,
+// little-endian architectures. Functions will not produce the correct answer
+// on other systems. Run the crypto_test binary, notably
+// crypto/compiler_test.cc, before adding a new architecture.
+#error "Unknown target CPU"
+#endif
+
+#if defined(__APPLE__)
+#define OPENSSL_APPLE
+// Note |TARGET_OS_MAC| is set for all Apple OS variants. |TARGET_OS_OSX|
+// targets macOS specifically.
+#if defined(TARGET_OS_OSX) && TARGET_OS_OSX
+#define OPENSSL_MACOS
+#endif
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#define OPENSSL_IOS
+#endif
+#endif
+
+#if defined(_WIN32)
+#define OPENSSL_WINDOWS
+#endif
+
+#if defined(__linux__)
+#define OPENSSL_LINUX
+#endif
+
+#if defined(__Fuchsia__)
+#define OPENSSL_FUCHSIA
+#endif
+
+#if defined(TRUSTY)
+#define OPENSSL_TRUSTY
+#define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED
+#endif
+
+#if defined(__ANDROID_API__)
+#define OPENSSL_ANDROID
+#endif
+
+// BoringSSL requires platform's locking APIs to make internal global state
+// thread-safe, including the PRNG. On some single-threaded embedded platforms,
+// locking APIs may not exist, so this dependency may be disabled with the
+// following build flag.
+//
+// IMPORTANT: Doing so means the consumer promises the library will never be
+// used in any multi-threaded context. It causes BoringSSL to be globally
+// thread-unsafe. Setting it inappropriately will subtly and unpredictably
+// corrupt memory and leak secret keys.
+//
+// Do not set this flag on any platform where threads are possible. BoringSSL
+// maintainers will not provide support for any consumers that do so. Changes
+// which break such unsupported configurations will not be reverted.
+#if !defined(OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED)
+#define OPENSSL_THREADS
+#endif
+
+#define OPENSSL_IS_BORINGSSL
+#define OPENSSL_VERSION_NUMBER 0x1010007f
+#define SSLEAY_VERSION_NUMBER OPENSSL_VERSION_NUMBER
+
+// BORINGSSL_API_VERSION is a positive integer that increments as BoringSSL
+// changes over time. The value itself is not meaningful. It will be incremented
+// whenever is convenient to coordinate an API change with consumers. This will
+// not denote any special point in development.
+//
+// A consumer may use this symbol in the preprocessor to temporarily build
+// against multiple revisions of BoringSSL at the same time. It is not
+// recommended to do so for longer than is necessary.
+#define BORINGSSL_API_VERSION 9
+
+#if defined(BORINGSSL_SHARED_LIBRARY)
+
+#if defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __declspec(dllexport)
+#else
+#define OPENSSL_EXPORT __declspec(dllimport)
+#endif
+
+#else  // defined(OPENSSL_WINDOWS)
+
+#if defined(BORINGSSL_IMPLEMENTATION)
+#define OPENSSL_EXPORT __attribute__((visibility("default")))
+#else
+#define OPENSSL_EXPORT
+#endif
+
+#endif  // defined(OPENSSL_WINDOWS)
+
+#else  // defined(BORINGSSL_SHARED_LIBRARY)
+
+#define OPENSSL_EXPORT
+
+#endif  // defined(BORINGSSL_SHARED_LIBRARY)
+
+
+#if defined(__GNUC__) || defined(__clang__)
+// MinGW has two different printf implementations. Ensure the format macro
+// matches the selected implementation. See
+// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/.
+#if defined(__MINGW_PRINTF_FORMAT)
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__(                                                 \
+      (__format__(__MINGW_PRINTF_FORMAT, string_index, first_to_check)))
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check) \
+  __attribute__((__format__(__printf__, string_index, first_to_check)))
+#endif
+#else
+#define OPENSSL_PRINTF_FORMAT_FUNC(string_index, first_to_check)
+#endif
+
+// OPENSSL_MSVC_PRAGMA emits a pragma on MSVC and nothing on other compilers.
+#if defined(_MSC_VER)
+#define OPENSSL_MSVC_PRAGMA(arg) __pragma(arg)
+#else
+#define OPENSSL_MSVC_PRAGMA(arg)
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#define OPENSSL_UNUSED __attribute__((unused))
+#else
+#define OPENSSL_UNUSED
+#endif
+
+// C and C++ handle inline functions differently. In C++, an inline function is
+// defined in just the header file, potentially emitted in multiple compilation
+// units (in cases the compiler did not inline), but each copy must be identical
+// to satsify ODR. In C, a non-static inline must be manually emitted in exactly
+// one compilation unit with a separate extern inline declaration.
+//
+// In both languages, exported inline functions referencing file-local symbols
+// are problematic. C forbids this altogether (though GCC and Clang seem not to
+// enforce it). It works in C++, but ODR requires the definitions be identical,
+// including all names in the definitions resolving to the "same entity". In
+// practice, this is unlikely to be a problem, but an inline function that
+// returns a pointer to a file-local symbol
+// could compile oddly.
+//
+// Historically, we used static inline in headers. However, to satisfy ODR, use
+// plain inline in C++, to allow inline consumer functions to call our header
+// functions. Plain inline would also work better with C99 inline, but that is
+// not used much in practice, extern inline is tedious, and there are conflicts
+// with the old gnu89 model:
+// https://stackoverflow.com/questions/216510/extern-inline
+#if defined(__cplusplus)
+#define OPENSSL_INLINE inline
+#else
+// Add OPENSSL_UNUSED so that, should an inline function be emitted via macro
+// (e.g. a |STACK_OF(T)| implementation) in a source file without tripping
+// clang's -Wunused-function.
+#define OPENSSL_INLINE static inline OPENSSL_UNUSED
+#endif
+
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE) && \
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+#define BORINGSSL_UNSAFE_DETERMINISTIC_MODE
+#endif
+
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define OPENSSL_ASAN
+#endif
+#if __has_feature(thread_sanitizer)
+#define OPENSSL_TSAN
+#endif
+#if __has_feature(memory_sanitizer)
+#define OPENSSL_MSAN
+#define OPENSSL_ASM_INCOMPATIBLE
+#endif
+#endif
+
+#if defined(OPENSSL_ASM_INCOMPATIBLE)
+#undef OPENSSL_ASM_INCOMPATIBLE
+#if !defined(OPENSSL_NO_ASM)
+#define OPENSSL_NO_ASM
+#endif
+#endif  // OPENSSL_ASM_INCOMPATIBLE
+
+#if defined(__cplusplus)
+// enums can be predeclared, but only in C++ and only if given an explicit type.
+// C doesn't support setting an explicit type for enums thus a #define is used
+// to do this only for C++. However, the ABI type between C and C++ need to have
+// equal sizes, which is confirmed in a unittest.
+#define BORINGSSL_ENUM_INT : int
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT;
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT;
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT;
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT;
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT;
+enum ssl_verify_result_t BORINGSSL_ENUM_INT;
+#else
+#define BORINGSSL_ENUM_INT
+#endif
+
+// CRYPTO_THREADID is a dummy value.
+typedef int CRYPTO_THREADID;
+
+typedef int ASN1_BOOLEAN;
+typedef int ASN1_NULL;
+typedef struct ASN1_ITEM_st ASN1_ITEM;
+typedef struct asn1_object_st ASN1_OBJECT;
+typedef struct asn1_pctx_st ASN1_PCTX;
+typedef struct asn1_string_st ASN1_BIT_STRING;
+typedef struct asn1_string_st ASN1_BMPSTRING;
+typedef struct asn1_string_st ASN1_ENUMERATED;
+typedef struct asn1_string_st ASN1_GENERALIZEDTIME;
+typedef struct asn1_string_st ASN1_GENERALSTRING;
+typedef struct asn1_string_st ASN1_IA5STRING;
+typedef struct asn1_string_st ASN1_INTEGER;
+typedef struct asn1_string_st ASN1_OCTET_STRING;
+typedef struct asn1_string_st ASN1_PRINTABLESTRING;
+typedef struct asn1_string_st ASN1_STRING;
+typedef struct asn1_string_st ASN1_T61STRING;
+typedef struct asn1_string_st ASN1_TIME;
+typedef struct asn1_string_st ASN1_UNIVERSALSTRING;
+typedef struct asn1_string_st ASN1_UTCTIME;
+typedef struct asn1_string_st ASN1_UTF8STRING;
+typedef struct asn1_string_st ASN1_VISIBLESTRING;
+typedef struct asn1_type_st ASN1_TYPE;
+typedef struct AUTHORITY_KEYID_st AUTHORITY_KEYID;
+typedef struct BASIC_CONSTRAINTS_st BASIC_CONSTRAINTS;
+typedef struct DIST_POINT_st DIST_POINT;
+typedef struct DSA_SIG_st DSA_SIG;
+typedef struct ISSUING_DIST_POINT_st ISSUING_DIST_POINT;
+typedef struct NAME_CONSTRAINTS_st NAME_CONSTRAINTS;
+typedef struct Netscape_spkac_st NETSCAPE_SPKAC;
+typedef struct Netscape_spki_st NETSCAPE_SPKI;
+typedef struct RIPEMD160state_st RIPEMD160_CTX;
+typedef struct X509_POLICY_CACHE_st X509_POLICY_CACHE;
+typedef struct X509_POLICY_LEVEL_st X509_POLICY_LEVEL;
+typedef struct X509_POLICY_NODE_st X509_POLICY_NODE;
+typedef struct X509_POLICY_TREE_st X509_POLICY_TREE;
+typedef struct X509_VERIFY_PARAM_st X509_VERIFY_PARAM;
+typedef struct X509_algor_st X509_ALGOR;
+typedef struct X509_crl_info_st X509_CRL_INFO;
+typedef struct X509_crl_st X509_CRL;
+typedef struct X509_extension_st X509_EXTENSION;
+typedef struct X509_info_st X509_INFO;
+typedef struct X509_name_entry_st X509_NAME_ENTRY;
+typedef struct X509_name_st X509_NAME;
+typedef struct X509_pubkey_st X509_PUBKEY;
+typedef struct X509_req_info_st X509_REQ_INFO;
+typedef struct X509_req_st X509_REQ;
+typedef struct X509_sig_st X509_SIG;
+typedef struct X509_val_st X509_VAL;
+typedef struct bignum_ctx BN_CTX;
+typedef struct bignum_st BIGNUM;
+typedef struct bio_method_st BIO_METHOD;
+typedef struct bio_st BIO;
+typedef struct bn_gencb_st BN_GENCB;
+typedef struct bn_mont_ctx_st BN_MONT_CTX;
+typedef struct buf_mem_st BUF_MEM;
+typedef struct cbb_st CBB;
+typedef struct cbs_st CBS;
+typedef struct cmac_ctx_st CMAC_CTX;
+typedef struct conf_st CONF;
+typedef struct conf_value_st CONF_VALUE;
+typedef struct crypto_buffer_pool_st CRYPTO_BUFFER_POOL;
+typedef struct crypto_buffer_st CRYPTO_BUFFER;
+typedef struct dh_st DH;
+typedef struct dsa_st DSA;
+typedef struct ec_group_st EC_GROUP;
+typedef struct ec_key_st EC_KEY;
+typedef struct ec_point_st EC_POINT;
+typedef struct ecdsa_method_st ECDSA_METHOD;
+typedef struct ecdsa_sig_st ECDSA_SIG;
+typedef struct engine_st ENGINE;
+typedef struct env_md_ctx_st EVP_MD_CTX;
+typedef struct env_md_st EVP_MD;
+typedef struct evp_aead_st EVP_AEAD;
+typedef struct evp_cipher_ctx_st EVP_CIPHER_CTX;
+typedef struct evp_cipher_st EVP_CIPHER;
+typedef struct evp_encode_ctx_st EVP_ENCODE_CTX;
+typedef struct evp_pkey_asn1_method_st EVP_PKEY_ASN1_METHOD;
+typedef struct evp_pkey_ctx_st EVP_PKEY_CTX;
+typedef struct evp_pkey_method_st EVP_PKEY_METHOD;
+typedef struct evp_pkey_st EVP_PKEY;
+typedef struct hmac_ctx_st HMAC_CTX;
+typedef struct md4_state_st MD4_CTX;
+typedef struct md5_state_st MD5_CTX;
+typedef struct ossl_init_settings_st OPENSSL_INIT_SETTINGS;
+typedef struct pkcs12_st PKCS12;
+typedef struct pkcs8_priv_key_info_st PKCS8_PRIV_KEY_INFO;
+typedef struct private_key_st X509_PKEY;
+typedef struct rand_meth_st RAND_METHOD;
+typedef struct rc4_key_st RC4_KEY;
+typedef struct rsa_meth_st RSA_METHOD;
+typedef struct rsa_st RSA;
+typedef struct sha256_state_st SHA256_CTX;
+typedef struct sha512_state_st SHA512_CTX;
+typedef struct sha_state_st SHA_CTX;
+typedef struct spake2_ctx_st SPAKE2_CTX;
+typedef struct srtp_protection_profile_st SRTP_PROTECTION_PROFILE;
+typedef struct ssl_cipher_st SSL_CIPHER;
+typedef struct ssl_ctx_st SSL_CTX;
+typedef struct ssl_method_st SSL_METHOD;
+typedef struct ssl_private_key_method_st SSL_PRIVATE_KEY_METHOD;
+typedef struct ssl_quic_method_st SSL_QUIC_METHOD;
+typedef struct ssl_session_st SSL_SESSION;
+typedef struct ssl_st SSL;
+typedef struct ssl_ticket_aead_method_st SSL_TICKET_AEAD_METHOD;
+typedef struct st_ERR_FNS ERR_FNS;
+typedef struct v3_ext_ctx X509V3_CTX;
+typedef struct x509_attributes_st X509_ATTRIBUTE;
+typedef struct x509_cert_aux_st X509_CERT_AUX;
+typedef struct x509_cinf_st X509_CINF;
+typedef struct x509_crl_method_st X509_CRL_METHOD;
+typedef struct x509_lookup_st X509_LOOKUP;
+typedef struct x509_revoked_st X509_REVOKED;
+typedef struct x509_st X509;
+typedef struct x509_store_ctx_st X509_STORE_CTX;
+typedef struct x509_store_st X509_STORE;
+typedef struct x509_trust_st X509_TRUST;
+
+typedef void *OPENSSL_BLOCK;
+
+
+#if defined(__cplusplus)
+}  // extern C
+#elif !defined(BORINGSSL_NO_CXX)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if defined(BORINGSSL_PREFIX)
+#define BSSL_NAMESPACE_BEGIN \
+  namespace bssl {           \
+  inline namespace BORINGSSL_PREFIX {
+#define BSSL_NAMESPACE_END \
+  }                        \
+  }
+#else
+#define BSSL_NAMESPACE_BEGIN namespace bssl {
+#define BSSL_NAMESPACE_END }
+#endif
+
+// MSVC doesn't set __cplusplus to 201103 to indicate C++11 support (see
+// https://connect.microsoft.com/VisualStudio/feedback/details/763051/a-value-of-predefined-macro-cplusplus-is-still-199711l)
+// so MSVC is just assumed to support C++11.
+#if !defined(BORINGSSL_NO_CXX) && __cplusplus < 201103L && !defined(_MSC_VER)
+#define BORINGSSL_NO_CXX
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <memory>
+
+// STLPort, used by some Android consumers, not have std::unique_ptr.
+#if defined(_STLPORT_VERSION)
+#define BORINGSSL_NO_CXX
+#endif
+
+}  // extern C++
+#endif  // !BORINGSSL_NO_CXX
+
+#if defined(BORINGSSL_NO_CXX)
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)
+
+#else
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// The Enable parameter is ignored and only exists so specializations can use
+// SFINAE.
+template <typename T, typename Enable = void>
+struct DeleterImpl {};
+
+template <typename T>
+struct Deleter {
+  void operator()(T *ptr) {
+    // Rather than specialize Deleter for each type, we specialize
+    // DeleterImpl. This allows bssl::UniquePtr<T> to be used while only
+    // including base.h as long as the destructor is not emitted. This matches
+    // std::unique_ptr's behavior on forward-declared types.
+    //
+    // DeleterImpl itself is specialized in the corresponding module's header
+    // and must be included to release an object. If not included, the compiler
+    // will error that DeleterImpl<T> does not have a method Free.
+    DeleterImpl<T>::Free(ptr);
+  }
+};
+
+template <typename T, typename CleanupRet, void (*init)(T *),
+          CleanupRet (*cleanup)(T *)>
+class StackAllocated {
+ public:
+  StackAllocated() { init(&ctx_); }
+  ~StackAllocated() { cleanup(&ctx_); }
+
+  StackAllocated(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+  T& operator=(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
+
+  T *get() { return &ctx_; }
+  const T *get() const { return &ctx_; }
+
+  T *operator->() { return &ctx_; }
+  const T *operator->() const { return &ctx_; }
+
+  void Reset() {
+    cleanup(&ctx_);
+    init(&ctx_);
+  }
+
+ private:
+  T ctx_;
+};
+
+}  // namespace internal
+
+#define BORINGSSL_MAKE_DELETER(type, deleter)     \
+  namespace internal {                            \
+  template <>                                     \
+  struct DeleterImpl<type> {                      \
+    static void Free(type *ptr) { deleter(ptr); } \
+  };                                              \
+  }
+
+// Holds ownership of heap-allocated BoringSSL structures. Sample usage:
+//   bssl::UniquePtr<RSA> rsa(RSA_new());
+//   bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
+template <typename T>
+using UniquePtr = std::unique_ptr<T, internal::Deleter<T>>;
+
+#define BORINGSSL_MAKE_UP_REF(type, up_ref_func)             \
+  inline UniquePtr<type> UpRef(type *v) {                    \
+    if (v != nullptr) {                                      \
+      up_ref_func(v);                                        \
+    }                                                        \
+    return UniquePtr<type>(v);                               \
+  }                                                          \
+                                                             \
+  inline UniquePtr<type> UpRef(const UniquePtr<type> &ptr) { \
+    return UpRef(ptr.get());                                 \
+  }
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !BORINGSSL_NO_CXX
+
+#endif  // OPENSSL_HEADER_BASE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h
new file mode 100644
index 0000000..a41cf5f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h	
@@ -0,0 +1,190 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BASE64_H
+#define OPENSSL_HEADER_BASE64_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// base64 functions.
+//
+// For historical reasons, these functions have the EVP_ prefix but just do
+// base64 encoding and decoding. Note that BoringSSL is a cryptography library,
+// so these functions are implemented with side channel protections, at a
+// performance cost. For other base64 uses, use a general-purpose base64
+// implementation.
+
+
+// Encoding
+
+// EVP_EncodeBlock encodes |src_len| bytes from |src| and writes the
+// result to |dst| with a trailing NUL. It returns the number of bytes
+// written, not including this trailing NUL.
+OPENSSL_EXPORT size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src,
+                                      size_t src_len);
+
+// EVP_EncodedLength sets |*out_len| to the number of bytes that will be needed
+// to call |EVP_EncodeBlock| on an input of length |len|. This includes the
+// final NUL that |EVP_EncodeBlock| writes. It returns one on success or zero
+// on error.
+OPENSSL_EXPORT int EVP_EncodedLength(size_t *out_len, size_t len);
+
+
+// Decoding
+
+// EVP_DecodedLength sets |*out_len| to the maximum number of bytes that will
+// be needed to call |EVP_DecodeBase64| on an input of length |len|. It returns
+// one on success or zero if |len| is not a valid length for a base64-encoded
+// string.
+OPENSSL_EXPORT int EVP_DecodedLength(size_t *out_len, size_t len);
+
+// EVP_DecodeBase64 decodes |in_len| bytes from base64 and writes
+// |*out_len| bytes to |out|. |max_out| is the size of the output
+// buffer. If it is not enough for the maximum output size, the
+// operation fails. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DecodeBase64(uint8_t *out, size_t *out_len,
+                                    size_t max_out, const uint8_t *in,
+                                    size_t in_len);
+
+
+// Deprecated functions.
+//
+// OpenSSL provides a streaming base64 implementation, however its behavior is
+// very specific to PEM. It is also very lenient of invalid input. Use of any of
+// these functions is thus deprecated.
+
+// EVP_EncodeInit initialises |*ctx|, which is typically stack
+// allocated, for an encoding operation.
+//
+// NOTE: The encoding operation breaks its output with newlines every
+// 64 characters of output (48 characters of input). Use
+// EVP_EncodeBlock to encode raw base64.
+OPENSSL_EXPORT void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_EncodeUpdate encodes |in_len| bytes from |in| and writes an encoded
+// version of them to |out| and sets |*out_len| to the number of bytes written.
+// Some state may be contained in |ctx| so |EVP_EncodeFinal| must be used to
+// flush it before using the encoded data.
+OPENSSL_EXPORT void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     size_t in_len);
+
+// EVP_EncodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written.
+OPENSSL_EXPORT void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len);
+
+// EVP_DecodeInit initialises |*ctx|, which is typically stack allocated, for
+// a decoding operation.
+//
+// TODO(davidben): This isn't a straight-up base64 decode either. Document
+// and/or fix exactly what's going on here; maximum line length and such.
+OPENSSL_EXPORT void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_DecodeUpdate decodes |in_len| bytes from |in| and writes the decoded
+// data to |out| and sets |*out_len| to the number of bytes written. Some state
+// may be contained in |ctx| so |EVP_DecodeFinal| must be used to flush it
+// before using the encoded data.
+//
+// It returns -1 on error, one if a full line of input was processed and zero
+// if the line was short (i.e. it was the last line).
+OPENSSL_EXPORT int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_DecodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written. It returns one on success
+// and minus one on error.
+OPENSSL_EXPORT int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                   int *out_len);
+
+// EVP_DecodeBlock encodes |src_len| bytes from |src| and writes the result to
+// |dst|. It returns the number of bytes written or -1 on error.
+//
+// WARNING: EVP_DecodeBlock's return value does not take padding into
+// account. It also strips leading whitespace and trailing
+// whitespace and minuses.
+OPENSSL_EXPORT int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src,
+                                   size_t src_len);
+
+
+struct evp_encode_ctx_st {
+  // data_used indicates the number of bytes of |data| that are valid. When
+  // encoding, |data| will be filled and encoded as a lump. When decoding, only
+  // the first four bytes of |data| will be used.
+  unsigned data_used;
+  uint8_t data[48];
+
+  // eof_seen indicates that the end of the base64 data has been seen when
+  // decoding. Only whitespace can follow.
+  char eof_seen;
+
+  // error_encountered indicates that invalid base64 data was found. This will
+  // cause all future calls to fail.
+  char error_encountered;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BASE64_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.back
new file mode 100644
index 0000000..c88546d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.back	
@@ -0,0 +1,190 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BASE64_H
+#define OPENSSL_HEADER_BASE64_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// base64 functions.
+//
+// For historical reasons, these functions have the EVP_ prefix but just do
+// base64 encoding and decoding. Note that BoringSSL is a cryptography library,
+// so these functions are implemented with side channel protections, at a
+// performance cost. For other base64 uses, use a general-purpose base64
+// implementation.
+
+
+// Encoding
+
+// EVP_EncodeBlock encodes |src_len| bytes from |src| and writes the
+// result to |dst| with a trailing NUL. It returns the number of bytes
+// written, not including this trailing NUL.
+OPENSSL_EXPORT size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src,
+                                      size_t src_len);
+
+// EVP_EncodedLength sets |*out_len| to the number of bytes that will be needed
+// to call |EVP_EncodeBlock| on an input of length |len|. This includes the
+// final NUL that |EVP_EncodeBlock| writes. It returns one on success or zero
+// on error.
+OPENSSL_EXPORT int EVP_EncodedLength(size_t *out_len, size_t len);
+
+
+// Decoding
+
+// EVP_DecodedLength sets |*out_len| to the maximum number of bytes that will
+// be needed to call |EVP_DecodeBase64| on an input of length |len|. It returns
+// one on success or zero if |len| is not a valid length for a base64-encoded
+// string.
+OPENSSL_EXPORT int EVP_DecodedLength(size_t *out_len, size_t len);
+
+// EVP_DecodeBase64 decodes |in_len| bytes from base64 and writes
+// |*out_len| bytes to |out|. |max_out| is the size of the output
+// buffer. If it is not enough for the maximum output size, the
+// operation fails. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DecodeBase64(uint8_t *out, size_t *out_len,
+                                    size_t max_out, const uint8_t *in,
+                                    size_t in_len);
+
+
+// Deprecated functions.
+//
+// OpenSSL provides a streaming base64 implementation, however its behavior is
+// very specific to PEM. It is also very lenient of invalid input. Use of any of
+// these functions is thus deprecated.
+
+// EVP_EncodeInit initialises |*ctx|, which is typically stack
+// allocated, for an encoding operation.
+//
+// NOTE: The encoding operation breaks its output with newlines every
+// 64 characters of output (48 characters of input). Use
+// EVP_EncodeBlock to encode raw base64.
+OPENSSL_EXPORT void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_EncodeUpdate encodes |in_len| bytes from |in| and writes an encoded
+// version of them to |out| and sets |*out_len| to the number of bytes written.
+// Some state may be contained in |ctx| so |EVP_EncodeFinal| must be used to
+// flush it before using the encoded data.
+OPENSSL_EXPORT void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     size_t in_len);
+
+// EVP_EncodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written.
+OPENSSL_EXPORT void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len);
+
+// EVP_DecodeInit initialises |*ctx|, which is typically stack allocated, for
+// a decoding operation.
+//
+// TODO(davidben): This isn't a straight-up base64 decode either. Document
+// and/or fix exactly what's going on here; maximum line length and such.
+OPENSSL_EXPORT void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_DecodeUpdate decodes |in_len| bytes from |in| and writes the decoded
+// data to |out| and sets |*out_len| to the number of bytes written. Some state
+// may be contained in |ctx| so |EVP_DecodeFinal| must be used to flush it
+// before using the encoded data.
+//
+// It returns -1 on error, one if a full line of input was processed and zero
+// if the line was short (i.e. it was the last line).
+OPENSSL_EXPORT int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_DecodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written. It returns one on success
+// and minus one on error.
+OPENSSL_EXPORT int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                   int *out_len);
+
+// EVP_DecodeBlock encodes |src_len| bytes from |src| and writes the result to
+// |dst|. It returns the number of bytes written or -1 on error.
+//
+// WARNING: EVP_DecodeBlock's return value does not take padding into
+// account. It also strips leading whitespace and trailing
+// whitespace and minuses.
+OPENSSL_EXPORT int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src,
+                                   size_t src_len);
+
+
+struct evp_encode_ctx_st {
+  // data_used indicates the number of bytes of |data| that are valid. When
+  // encoding, |data| will be filled and encoded as a lump. When decoding, only
+  // the first four bytes of |data| will be used.
+  unsigned data_used;
+  uint8_t data[48];
+
+  // eof_seen indicates that the end of the base64 data has been seen when
+  // decoding. Only whitespace can follow.
+  char eof_seen;
+
+  // error_encountered indicates that invalid base64 data was found. This will
+  // cause all future calls to fail.
+  char error_encountered;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BASE64_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.grpc_back
new file mode 100644
index 0000000..c88546d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/base64.h.grpc_back	
@@ -0,0 +1,190 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BASE64_H
+#define OPENSSL_HEADER_BASE64_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// base64 functions.
+//
+// For historical reasons, these functions have the EVP_ prefix but just do
+// base64 encoding and decoding. Note that BoringSSL is a cryptography library,
+// so these functions are implemented with side channel protections, at a
+// performance cost. For other base64 uses, use a general-purpose base64
+// implementation.
+
+
+// Encoding
+
+// EVP_EncodeBlock encodes |src_len| bytes from |src| and writes the
+// result to |dst| with a trailing NUL. It returns the number of bytes
+// written, not including this trailing NUL.
+OPENSSL_EXPORT size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src,
+                                      size_t src_len);
+
+// EVP_EncodedLength sets |*out_len| to the number of bytes that will be needed
+// to call |EVP_EncodeBlock| on an input of length |len|. This includes the
+// final NUL that |EVP_EncodeBlock| writes. It returns one on success or zero
+// on error.
+OPENSSL_EXPORT int EVP_EncodedLength(size_t *out_len, size_t len);
+
+
+// Decoding
+
+// EVP_DecodedLength sets |*out_len| to the maximum number of bytes that will
+// be needed to call |EVP_DecodeBase64| on an input of length |len|. It returns
+// one on success or zero if |len| is not a valid length for a base64-encoded
+// string.
+OPENSSL_EXPORT int EVP_DecodedLength(size_t *out_len, size_t len);
+
+// EVP_DecodeBase64 decodes |in_len| bytes from base64 and writes
+// |*out_len| bytes to |out|. |max_out| is the size of the output
+// buffer. If it is not enough for the maximum output size, the
+// operation fails. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DecodeBase64(uint8_t *out, size_t *out_len,
+                                    size_t max_out, const uint8_t *in,
+                                    size_t in_len);
+
+
+// Deprecated functions.
+//
+// OpenSSL provides a streaming base64 implementation, however its behavior is
+// very specific to PEM. It is also very lenient of invalid input. Use of any of
+// these functions is thus deprecated.
+
+// EVP_EncodeInit initialises |*ctx|, which is typically stack
+// allocated, for an encoding operation.
+//
+// NOTE: The encoding operation breaks its output with newlines every
+// 64 characters of output (48 characters of input). Use
+// EVP_EncodeBlock to encode raw base64.
+OPENSSL_EXPORT void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_EncodeUpdate encodes |in_len| bytes from |in| and writes an encoded
+// version of them to |out| and sets |*out_len| to the number of bytes written.
+// Some state may be contained in |ctx| so |EVP_EncodeFinal| must be used to
+// flush it before using the encoded data.
+OPENSSL_EXPORT void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     size_t in_len);
+
+// EVP_EncodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written.
+OPENSSL_EXPORT void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len);
+
+// EVP_DecodeInit initialises |*ctx|, which is typically stack allocated, for
+// a decoding operation.
+//
+// TODO(davidben): This isn't a straight-up base64 decode either. Document
+// and/or fix exactly what's going on here; maximum line length and such.
+OPENSSL_EXPORT void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
+
+// EVP_DecodeUpdate decodes |in_len| bytes from |in| and writes the decoded
+// data to |out| and sets |*out_len| to the number of bytes written. Some state
+// may be contained in |ctx| so |EVP_DecodeFinal| must be used to flush it
+// before using the encoded data.
+//
+// It returns -1 on error, one if a full line of input was processed and zero
+// if the line was short (i.e. it was the last line).
+OPENSSL_EXPORT int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_DecodeFinal flushes any remaining output bytes from |ctx| to |out| and
+// sets |*out_len| to the number of bytes written. It returns one on success
+// and minus one on error.
+OPENSSL_EXPORT int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out,
+                                   int *out_len);
+
+// EVP_DecodeBlock encodes |src_len| bytes from |src| and writes the result to
+// |dst|. It returns the number of bytes written or -1 on error.
+//
+// WARNING: EVP_DecodeBlock's return value does not take padding into
+// account. It also strips leading whitespace and trailing
+// whitespace and minuses.
+OPENSSL_EXPORT int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src,
+                                   size_t src_len);
+
+
+struct evp_encode_ctx_st {
+  // data_used indicates the number of bytes of |data| that are valid. When
+  // encoding, |data| will be filled and encoded as a lump. When decoding, only
+  // the first four bytes of |data| will be used.
+  unsigned data_used;
+  uint8_t data[48];
+
+  // eof_seen indicates that the end of the base64 data has been seen when
+  // decoding. Only whitespace can follow.
+  char eof_seen;
+
+  // error_encountered indicates that invalid base64 data was found. This will
+  // cause all future calls to fail.
+  char error_encountered;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_BASE64_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h
new file mode 100644
index 0000000..3b0c867
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h	
@@ -0,0 +1,933 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BIO_H
+#define OPENSSL_HEADER_BIO_H
+
+#include <openssl_grpc/base.h>
+
+#include <stdio.h>  // For FILE
+
+#include <openssl_grpc/buffer.h>
+#include <openssl_grpc/err.h>  // for ERR_print_errors_fp
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BIO abstracts over a file-descriptor like interface.
+
+
+// Allocation and freeing.
+
+DEFINE_STACK_OF(BIO)
+
+// BIO_new creates a new BIO with the given method and a reference count of one.
+// It returns the fresh |BIO|, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new(const BIO_METHOD *method);
+
+// BIO_free decrements the reference count of |bio|. If the reference count
+// drops to zero, it calls the destroy callback, if present, on the method and
+// frees |bio| itself. It then repeats that for the next BIO in the chain, if
+// any.
+//
+// It returns one on success or zero otherwise.
+OPENSSL_EXPORT int BIO_free(BIO *bio);
+
+// BIO_vfree performs the same actions as |BIO_free|, but has a void return
+// value. This is provided for API-compat.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT void BIO_vfree(BIO *bio);
+
+// BIO_up_ref increments the reference count of |bio| and returns one.
+OPENSSL_EXPORT int BIO_up_ref(BIO *bio);
+
+
+// Basic I/O.
+
+// BIO_read attempts to read |len| bytes into |data|. It returns the number of
+// bytes read, zero on EOF, or a negative number on error.
+OPENSSL_EXPORT int BIO_read(BIO *bio, void *data, int len);
+
+// BIO_gets "reads a line" from |bio| and puts at most |size| bytes into |buf|.
+// It returns the number of bytes read or a negative number on error. The
+// phrase "reads a line" is in quotes in the previous sentence because the
+// exact operation depends on the BIO's method. For example, a digest BIO will
+// return the digest in response to a |BIO_gets| call.
+//
+// TODO(fork): audit the set of BIOs that we end up needing. If all actually
+// return a line for this call, remove the warning above.
+OPENSSL_EXPORT int BIO_gets(BIO *bio, char *buf, int size);
+
+// BIO_write writes |len| bytes from |data| to |bio|. It returns the number of
+// bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_write(BIO *bio, const void *data, int len);
+
+// BIO_write_all writes |len| bytes from |data| to |bio|, looping as necessary.
+// It returns one if all bytes were successfully written and zero on error.
+OPENSSL_EXPORT int BIO_write_all(BIO *bio, const void *data, size_t len);
+
+// BIO_puts writes a NUL terminated string from |buf| to |bio|. It returns the
+// number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_puts(BIO *bio, const char *buf);
+
+// BIO_flush flushes any buffered output. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_flush(BIO *bio);
+
+
+// Low-level control functions.
+//
+// These are generic functions for sending control requests to a BIO. In
+// general one should use the wrapper functions like |BIO_get_close|.
+
+// BIO_ctrl sends the control request |cmd| to |bio|. The |cmd| argument should
+// be one of the |BIO_C_*| values.
+OPENSSL_EXPORT long BIO_ctrl(BIO *bio, int cmd, long larg, void *parg);
+
+// BIO_ptr_ctrl acts like |BIO_ctrl| but passes the address of a |void*|
+// pointer as |parg| and returns the value that is written to it, or NULL if
+// the control request returns <= 0.
+OPENSSL_EXPORT char *BIO_ptr_ctrl(BIO *bp, int cmd, long larg);
+
+// BIO_int_ctrl acts like |BIO_ctrl| but passes the address of a copy of |iarg|
+// as |parg|.
+OPENSSL_EXPORT long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg);
+
+// BIO_reset resets |bio| to its initial state, the precise meaning of which
+// depends on the concrete type of |bio|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_reset(BIO *bio);
+
+// BIO_eof returns non-zero when |bio| has reached end-of-file. The precise
+// meaning of which depends on the concrete type of |bio|. Note that in the
+// case of BIO_pair this always returns non-zero.
+OPENSSL_EXPORT int BIO_eof(BIO *bio);
+
+// BIO_set_flags ORs |flags| with |bio->flags|.
+OPENSSL_EXPORT void BIO_set_flags(BIO *bio, int flags);
+
+// BIO_test_flags returns |bio->flags| AND |flags|.
+OPENSSL_EXPORT int BIO_test_flags(const BIO *bio, int flags);
+
+// BIO_should_read returns non-zero if |bio| encountered a temporary error
+// while reading (i.e. EAGAIN), indicating that the caller should retry the
+// read.
+OPENSSL_EXPORT int BIO_should_read(const BIO *bio);
+
+// BIO_should_write returns non-zero if |bio| encountered a temporary error
+// while writing (i.e. EAGAIN), indicating that the caller should retry the
+// write.
+OPENSSL_EXPORT int BIO_should_write(const BIO *bio);
+
+// BIO_should_retry returns non-zero if the reason that caused a failed I/O
+// operation is temporary and thus the operation should be retried. Otherwise,
+// it was a permanent error and it returns zero.
+OPENSSL_EXPORT int BIO_should_retry(const BIO *bio);
+
+// BIO_should_io_special returns non-zero if |bio| encountered a temporary
+// error while performing a special I/O operation, indicating that the caller
+// should retry. The operation that caused the error is returned by
+// |BIO_get_retry_reason|.
+OPENSSL_EXPORT int BIO_should_io_special(const BIO *bio);
+
+// BIO_RR_CONNECT indicates that a connect would have blocked
+#define BIO_RR_CONNECT 0x02
+
+// BIO_RR_ACCEPT indicates that an accept would have blocked
+#define BIO_RR_ACCEPT 0x03
+
+// BIO_get_retry_reason returns the special I/O operation that needs to be
+// retried. The return value is one of the |BIO_RR_*| values.
+OPENSSL_EXPORT int BIO_get_retry_reason(const BIO *bio);
+
+// BIO_clear_flags ANDs |bio->flags| with the bitwise-complement of |flags|.
+OPENSSL_EXPORT void BIO_clear_flags(BIO *bio, int flags);
+
+// BIO_set_retry_read sets the |BIO_FLAGS_READ| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_read(BIO *bio);
+
+// BIO_set_retry_write sets the |BIO_FLAGS_WRITE| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_write(BIO *bio);
+
+// BIO_get_retry_flags gets the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT int BIO_get_retry_flags(BIO *bio);
+
+// BIO_clear_retry_flags clears the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT void BIO_clear_retry_flags(BIO *bio);
+
+// BIO_method_type returns the type of |bio|, which is one of the |BIO_TYPE_*|
+// values.
+OPENSSL_EXPORT int BIO_method_type(const BIO *bio);
+
+// These are passed to the BIO callback
+#define BIO_CB_FREE 0x01
+#define BIO_CB_READ 0x02
+#define BIO_CB_WRITE 0x03
+#define BIO_CB_PUTS 0x04
+#define BIO_CB_GETS 0x05
+#define BIO_CB_CTRL 0x06
+
+// The callback is called before and after the underling operation,
+// The BIO_CB_RETURN flag indicates if it is after the call
+#define BIO_CB_RETURN 0x80
+
+// bio_info_cb is the type of a callback function that can be called for most
+// BIO operations. The |event| argument is one of |BIO_CB_*| and can be ORed
+// with |BIO_CB_RETURN| if the callback is being made after the operation in
+// question. In that case, |return_value| will contain the return value from
+// the operation.
+typedef long (*bio_info_cb)(BIO *bio, int event, const char *parg, int cmd,
+                            long larg, long return_value);
+
+// BIO_callback_ctrl allows the callback function to be manipulated. The |cmd|
+// arg will generally be |BIO_CTRL_SET_CALLBACK| but arbitrary command values
+// can be interpreted by the |BIO|.
+OPENSSL_EXPORT long BIO_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp);
+
+// BIO_pending returns the number of bytes pending to be read.
+OPENSSL_EXPORT size_t BIO_pending(const BIO *bio);
+
+// BIO_ctrl_pending calls |BIO_pending| and exists only for compatibility with
+// OpenSSL.
+OPENSSL_EXPORT size_t BIO_ctrl_pending(const BIO *bio);
+
+// BIO_wpending returns the number of bytes pending to be written.
+OPENSSL_EXPORT size_t BIO_wpending(const BIO *bio);
+
+// BIO_set_close sets the close flag for |bio|. The meaning of which depends on
+// the type of |bio| but, for example, a memory BIO interprets the close flag
+// as meaning that it owns its buffer. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_set_close(BIO *bio, int close_flag);
+
+// BIO_number_read returns the number of bytes that have been read from
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_read(const BIO *bio);
+
+// BIO_number_written returns the number of bytes that have been written to
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_written(const BIO *bio);
+
+
+// Managing chains of BIOs.
+//
+// BIOs can be put into chains where the output of one is used as the input of
+// the next etc. The most common case is a buffering BIO, which accepts and
+// buffers writes until flushed into the next BIO in the chain.
+
+// BIO_push adds |appended_bio| to the end of the chain with |bio| at the head.
+// It returns |bio|. Note that |appended_bio| may be the head of a chain itself
+// and thus this function can be used to join two chains.
+//
+// BIO_push takes ownership of the caller's reference to |appended_bio|.
+OPENSSL_EXPORT BIO *BIO_push(BIO *bio, BIO *appended_bio);
+
+// BIO_pop removes |bio| from the head of a chain and returns the next BIO in
+// the chain, or NULL if there is no next BIO.
+//
+// The caller takes ownership of the chain's reference to |bio|.
+OPENSSL_EXPORT BIO *BIO_pop(BIO *bio);
+
+// BIO_next returns the next BIO in the chain after |bio|, or NULL if there is
+// no such BIO.
+OPENSSL_EXPORT BIO *BIO_next(BIO *bio);
+
+// BIO_free_all calls |BIO_free|.
+//
+// TODO(fork): update callers and remove.
+OPENSSL_EXPORT void BIO_free_all(BIO *bio);
+
+// BIO_find_type walks a chain of BIOs and returns the first that matches
+// |type|, which is one of the |BIO_TYPE_*| values.
+OPENSSL_EXPORT BIO *BIO_find_type(BIO *bio, int type);
+
+// BIO_copy_next_retry sets the retry flags and |retry_reason| of |bio| from
+// the next BIO in the chain.
+OPENSSL_EXPORT void BIO_copy_next_retry(BIO *bio);
+
+
+// Printf functions.
+
+// BIO_printf behaves like |printf| but outputs to |bio| rather than a |FILE|.
+// It returns the number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_printf(BIO *bio, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(2, 3);
+
+
+// Utility functions.
+
+// BIO_indent prints min(|indent|, |max_indent|) spaces. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_indent(BIO *bio, unsigned indent, unsigned max_indent);
+
+// BIO_hexdump writes a hex dump of |data| to |bio|. Each line will be indented
+// by |indent| spaces.
+OPENSSL_EXPORT int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len,
+                               unsigned indent);
+
+// ERR_print_errors prints the current contents of the error stack to |bio|
+// using human readable strings where possible.
+OPENSSL_EXPORT void ERR_print_errors(BIO *bio);
+
+// BIO_read_asn1 reads a single ASN.1 object from |bio|. If successful it sets
+// |*out| to be an allocated buffer (that should be freed with |OPENSSL_free|),
+// |*out_size| to the length, in bytes, of that buffer and returns one.
+// Otherwise it returns zero.
+//
+// If the length of the object is greater than |max_len| or 2^32 then the
+// function will fail. Long-form tags are not supported. If the length of the
+// object is indefinite the full contents of |bio| are read, unless it would be
+// greater than |max_len|, in which case the function fails.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT int BIO_read_asn1(BIO *bio, uint8_t **out, size_t *out_len,
+                                 size_t max_len);
+
+
+// Memory BIOs.
+//
+// Memory BIOs can be used as a read-only source (with |BIO_new_mem_buf|) or a
+// writable sink (with |BIO_new|, |BIO_s_mem| and |BIO_mem_contents|). Data
+// written to a writable, memory BIO can be recalled by reading from it.
+//
+// Calling |BIO_reset| on a read-only BIO resets it to the original contents.
+// On a writable BIO, it clears any data.
+//
+// If the close flag is set to |BIO_NOCLOSE| (not the default) then the
+// underlying |BUF_MEM| will not be freed when the |BIO| is freed.
+//
+// Memory BIOs support |BIO_gets| and |BIO_puts|.
+//
+// |BIO_ctrl_pending| returns the number of bytes currently stored.
+
+// BIO_NOCLOSE and |BIO_CLOSE| can be used as symbolic arguments when a "close
+// flag" is passed to a BIO function.
+#define BIO_NOCLOSE 0
+#define BIO_CLOSE 1
+
+// BIO_s_mem returns a |BIO_METHOD| that uses a in-memory buffer.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_mem(void);
+
+// BIO_new_mem_buf creates read-only BIO that reads from |len| bytes at |buf|.
+// It does not take ownership of |buf|. It returns the BIO or NULL on error.
+//
+// If |len| is negative, then |buf| is treated as a NUL-terminated string, but
+// don't depend on this in new code.
+OPENSSL_EXPORT BIO *BIO_new_mem_buf(const void *buf, int len);
+
+// BIO_mem_contents sets |*out_contents| to point to the current contents of
+// |bio| and |*out_len| to contain the length of that data. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_mem_contents(const BIO *bio,
+                                    const uint8_t **out_contents,
+                                    size_t *out_len);
+
+// BIO_get_mem_data sets |*contents| to point to the current contents of |bio|
+// and returns the length of the data.
+//
+// WARNING: don't use this, use |BIO_mem_contents|. A return value of zero from
+// this function can mean either that it failed or that the memory buffer is
+// empty.
+OPENSSL_EXPORT long BIO_get_mem_data(BIO *bio, char **contents);
+
+// BIO_get_mem_ptr sets |*out| to a BUF_MEM containing the current contents of
+// |bio|. It returns one on success or zero on error.
+OPENSSL_EXPORT int BIO_get_mem_ptr(BIO *bio, BUF_MEM **out);
+
+// BIO_set_mem_buf sets |b| as the contents of |bio|. If |take_ownership| is
+// non-zero, then |b| will be freed when |bio| is closed. Returns one on
+// success or zero otherwise.
+OPENSSL_EXPORT int BIO_set_mem_buf(BIO *bio, BUF_MEM *b, int take_ownership);
+
+// BIO_set_mem_eof_return sets the value that will be returned from reading
+// |bio| when empty. If |eof_value| is zero then an empty memory BIO will
+// return EOF (that is it will return zero and |BIO_should_retry| will be
+// false). If |eof_value| is non zero then it will return |eof_value| when it
+// is empty and it will set the read retry flag (that is |BIO_read_retry| is
+// true). To avoid ambiguity with a normal positive return value, |eof_value|
+// should be set to a negative value, typically -1.
+//
+// For a read-only BIO, the default is zero (EOF). For a writable BIO, the
+// default is -1 so that additional data can be written once exhausted.
+OPENSSL_EXPORT int BIO_set_mem_eof_return(BIO *bio, int eof_value);
+
+
+// File descriptor BIOs.
+//
+// File descriptor BIOs are wrappers around the system's |read| and |write|
+// functions. If the close flag is set then then |close| is called on the
+// underlying file descriptor when the BIO is freed.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |lseek|.
+
+// BIO_s_fd returns a |BIO_METHOD| for file descriptor fds.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_fd(void);
+
+// BIO_new_fd creates a new file descriptor BIO wrapping |fd|. If |close_flag|
+// is non-zero, then |fd| will be closed when the BIO is.
+OPENSSL_EXPORT BIO *BIO_new_fd(int fd, int close_flag);
+
+// BIO_set_fd sets the file descriptor of |bio| to |fd|. If |close_flag| is
+// non-zero then |fd| will be closed when |bio| is. It returns one on success
+// or zero on error.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_set_fd(BIO *bio, int fd, int close_flag);
+
+// BIO_get_fd returns the file descriptor currently in use by |bio| or -1 if
+// |bio| does not wrap a file descriptor. If there is a file descriptor and
+// |out_fd| is not NULL, it also sets |*out_fd| to the file descriptor.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_get_fd(BIO *bio, int *out_fd);
+
+
+// File BIOs.
+//
+// File BIOs are wrappers around a C |FILE| object.
+//
+// |BIO_flush| on a file BIO calls |fflush| on the wrapped stream.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |fseek|.
+//
+// Setting the close flag causes |fclose| to be called on the stream when the
+// BIO is freed.
+
+// BIO_s_file returns a BIO_METHOD that wraps a |FILE|.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_file(void);
+
+// BIO_new_file creates a file BIO by opening |filename| with the given mode.
+// See the |fopen| manual page for details of the mode argument.
+OPENSSL_EXPORT BIO *BIO_new_file(const char *filename, const char *mode);
+
+// BIO_new_fp creates a new file BIO that wraps the given |FILE|. If
+// |close_flag| is |BIO_CLOSE|, then |fclose| will be called on |stream| when
+// the BIO is closed.
+OPENSSL_EXPORT BIO *BIO_new_fp(FILE *stream, int close_flag);
+
+// BIO_get_fp sets |*out_file| to the current |FILE| for |bio|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int BIO_get_fp(BIO *bio, FILE **out_file);
+
+// BIO_set_fp sets the |FILE| for |bio|. If |close_flag| is |BIO_CLOSE| then
+// |fclose| will be called on |file| when |bio| is closed. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_fp(BIO *bio, FILE *file, int close_flag);
+
+// BIO_read_filename opens |filename| for reading and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_read_filename(BIO *bio, const char *filename);
+
+// BIO_write_filename opens |filename| for writing and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_write_filename(BIO *bio, const char *filename);
+
+// BIO_append_filename opens |filename| for appending and sets the result as
+// the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_append_filename(BIO *bio, const char *filename);
+
+// BIO_rw_filename opens |filename| for reading and writing and sets the result
+// as the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_rw_filename(BIO *bio, const char *filename);
+
+
+// Socket BIOs.
+//
+// Socket BIOs behave like file descriptor BIOs but, on Windows systems, wrap
+// the system's |recv| and |send| functions instead of |read| and |write|. On
+// Windows, file descriptors are provided by C runtime and are not
+// interchangeable with sockets.
+//
+// Socket BIOs may be used with |BIO_set_fd| and |BIO_get_fd|.
+//
+// TODO(davidben): Add separate APIs and fix the internals to use |SOCKET|s
+// around rather than rely on int casts.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_socket(void);
+
+// BIO_new_socket allocates and initialises a fresh BIO which will read and
+// write to the socket |fd|. If |close_flag| is |BIO_CLOSE| then closing the
+// BIO will close |fd|. It returns the fresh |BIO| or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_socket(int fd, int close_flag);
+
+
+// Connect BIOs.
+//
+// A connection BIO creates a network connection and transfers data over the
+// resulting socket.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_connect(void);
+
+// BIO_new_connect returns a BIO that connects to the given hostname and port.
+// The |host_and_optional_port| argument should be of the form
+// "www.example.com" or "www.example.com:443". If the port is omitted, it must
+// be provided with |BIO_set_conn_port|.
+//
+// It returns the new BIO on success, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_connect(const char *host_and_optional_port);
+
+// BIO_set_conn_hostname sets |host_and_optional_port| as the hostname and
+// optional port that |bio| will connect to. If the port is omitted, it must be
+// provided with |BIO_set_conn_port|.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_hostname(BIO *bio,
+                                         const char *host_and_optional_port);
+
+// BIO_set_conn_port sets |port_str| as the port or service name that |bio|
+// will connect to. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_port(BIO *bio, const char *port_str);
+
+// BIO_set_conn_int_port sets |*port| as the port that |bio| will connect to.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_int_port(BIO *bio, const int *port);
+
+// BIO_set_nbio sets whether |bio| will use non-blocking I/O operations. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_nbio(BIO *bio, int on);
+
+// BIO_do_connect connects |bio| if it has not been connected yet. It returns
+// one on success and <= 0 otherwise.
+OPENSSL_EXPORT int BIO_do_connect(BIO *bio);
+
+
+// Datagram BIOs.
+//
+// TODO(fork): not implemented.
+
+#define BIO_CTRL_DGRAM_QUERY_MTU 40  // as kernel for current MTU
+
+#define BIO_CTRL_DGRAM_SET_MTU 42 /* set cached value for  MTU. want to use
+                                     this if asking the kernel fails */
+
+#define BIO_CTRL_DGRAM_MTU_EXCEEDED 43 /* check whether the MTU was exceed in
+                                          the previous write operation. */
+
+// BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT is unsupported as it is unused by consumers
+// and depends on |timeval|, which is not 2038-clean on all platforms.
+
+#define BIO_CTRL_DGRAM_GET_PEER           46
+
+#define BIO_CTRL_DGRAM_GET_FALLBACK_MTU   47
+
+
+// BIO Pairs.
+//
+// BIO pairs provide a "loopback" like system: a pair of BIOs where data
+// written to one can be read from the other and vice versa.
+
+// BIO_new_bio_pair sets |*out1| and |*out2| to two freshly created BIOs where
+// data written to one can be read from the other and vice versa. The
+// |writebuf1| argument gives the size of the buffer used in |*out1| and
+// |writebuf2| for |*out2|. It returns one on success and zero on error.
+OPENSSL_EXPORT int BIO_new_bio_pair(BIO **out1, size_t writebuf1, BIO **out2,
+                                    size_t writebuf2);
+
+// BIO_ctrl_get_read_request returns the number of bytes that the other side of
+// |bio| tried (unsuccessfully) to read.
+OPENSSL_EXPORT size_t BIO_ctrl_get_read_request(BIO *bio);
+
+// BIO_ctrl_get_write_guarantee returns the number of bytes that |bio| (which
+// must have been returned by |BIO_new_bio_pair|) will accept on the next
+// |BIO_write| call.
+OPENSSL_EXPORT size_t BIO_ctrl_get_write_guarantee(BIO *bio);
+
+// BIO_shutdown_wr marks |bio| as closed, from the point of view of the other
+// side of the pair. Future |BIO_write| calls on |bio| will fail. It returns
+// one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_shutdown_wr(BIO *bio);
+
+
+// Custom BIOs.
+//
+// Consumers can create custom |BIO|s by filling in a |BIO_METHOD| and using
+// low-level control functions to set state.
+
+// BIO_get_new_index returns a new "type" value for a custom |BIO|.
+OPENSSL_EXPORT int BIO_get_new_index(void);
+
+// BIO_meth_new returns a newly-allocated |BIO_METHOD| or NULL on allocation
+// error. The |type| specifies the type that will be returned by
+// |BIO_method_type|. If this is unnecessary, this value may be zero. The |name|
+// parameter is vestigial and may be NULL.
+//
+// Use the |BIO_meth_set_*| functions below to initialize the |BIO_METHOD|. The
+// function implementations may use |BIO_set_data| and |BIO_get_data| to add
+// method-specific state to associated |BIO|s. Additionally, |BIO_set_init| must
+// be called after an associated |BIO| is fully initialized. State set via
+// |BIO_set_data| may be released by configuring a destructor with
+// |BIO_meth_set_destroy|.
+OPENSSL_EXPORT BIO_METHOD *BIO_meth_new(int type, const char *name);
+
+// BIO_meth_free releases memory associated with |method|.
+OPENSSL_EXPORT void BIO_meth_free(BIO_METHOD *method);
+
+// BIO_meth_set_create sets a function to be called on |BIO_new| for |method|
+// and returns one. The function should return one on success and zero on
+// error.
+OPENSSL_EXPORT int BIO_meth_set_create(BIO_METHOD *method,
+                                       int (*create)(BIO *));
+
+// BIO_meth_set_destroy sets a function to release data associated with a |BIO|
+// and returns one. The function's return value is ignored.
+OPENSSL_EXPORT int BIO_meth_set_destroy(BIO_METHOD *method,
+                                        int (*destroy)(BIO *));
+
+// BIO_meth_set_write sets the implementation of |BIO_write| for |method| and
+// returns one. |BIO_METHOD|s which implement |BIO_write| should also implement
+// |BIO_CTRL_FLUSH|. (See |BIO_meth_set_ctrl|.)
+OPENSSL_EXPORT int BIO_meth_set_write(BIO_METHOD *method,
+                                      int (*write)(BIO *, const char *, int));
+
+// BIO_meth_set_read sets the implementation of |BIO_read| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_read(BIO_METHOD *method,
+                                     int (*read)(BIO *, char *, int));
+
+// BIO_meth_set_gets sets the implementation of |BIO_gets| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_gets(BIO_METHOD *method,
+                                     int (*gets)(BIO *, char *, int));
+
+// BIO_meth_set_ctrl sets the implementation of |BIO_ctrl| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_ctrl(BIO_METHOD *method,
+                                     long (*ctrl)(BIO *, int, long, void *));
+
+// BIO_set_data sets custom data on |bio|. It may be retried with
+// |BIO_get_data|.
+OPENSSL_EXPORT void BIO_set_data(BIO *bio, void *ptr);
+
+// BIO_get_data returns custom data on |bio| set by |BIO_get_data|.
+OPENSSL_EXPORT void *BIO_get_data(BIO *bio);
+
+// BIO_set_init sets whether |bio| has been fully initialized. Until fully
+// initialized, |BIO_read| and |BIO_write| will fail.
+OPENSSL_EXPORT void BIO_set_init(BIO *bio, int init);
+
+// BIO_get_init returns whether |bio| has been fully initialized.
+OPENSSL_EXPORT int BIO_get_init(BIO *bio);
+
+// These are values of the |cmd| argument to |BIO_ctrl|.
+
+// BIO_CTRL_RESET implements |BIO_reset|. The arguments are unused.
+#define BIO_CTRL_RESET 1
+
+// BIO_CTRL_EOF implements |BIO_eof|. The arguments are unused.
+#define BIO_CTRL_EOF 2
+
+// BIO_CTRL_INFO is a legacy command that returns information specific to the
+// type of |BIO|. It is not safe to call generically and should not be
+// implemented in new |BIO| types.
+#define BIO_CTRL_INFO 3
+
+// BIO_CTRL_GET_CLOSE returns the close flag set by |BIO_CTRL_SET_CLOSE|. The
+// arguments are unused.
+#define BIO_CTRL_GET_CLOSE 8
+
+// BIO_CTRL_SET_CLOSE implements |BIO_set_close|. The |larg| argument is the
+// close flag.
+#define BIO_CTRL_SET_CLOSE 9
+
+// BIO_CTRL_PENDING implements |BIO_pending|. The arguments are unused.
+#define BIO_CTRL_PENDING 10
+
+// BIO_CTRL_FLUSH implements |BIO_flush|. The arguments are unused.
+#define BIO_CTRL_FLUSH 11
+
+// BIO_CTRL_WPENDING implements |BIO_wpending|. The arguments are unused.
+#define BIO_CTRL_WPENDING 13
+
+// BIO_CTRL_SET_CALLBACK sets an informational callback of type
+// int cb(BIO *bio, int state, int ret)
+#define BIO_CTRL_SET_CALLBACK 14
+
+// BIO_CTRL_GET_CALLBACK returns the callback set by |BIO_CTRL_SET_CALLBACK|.
+#define BIO_CTRL_GET_CALLBACK 15
+
+// The following are never used, but are defined to aid porting existing code.
+#define BIO_CTRL_SET 4
+#define BIO_CTRL_GET 5
+#define BIO_CTRL_PUSH 6
+#define BIO_CTRL_POP 7
+#define BIO_CTRL_DUP 12
+#define BIO_CTRL_SET_FILENAME 30
+
+
+// Deprecated functions.
+
+// BIO_f_base64 returns a filter |BIO| that base64-encodes data written into
+// it, and decodes data read from it. |BIO_gets| is not supported. Call
+// |BIO_flush| when done writing, to signal that no more data are to be
+// encoded. The flag |BIO_FLAGS_BASE64_NO_NL| may be set to encode all the data
+// on one line.
+//
+// Use |EVP_EncodeBlock| and |EVP_DecodeBase64| instead.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_base64(void);
+
+OPENSSL_EXPORT void BIO_set_retry_special(BIO *bio);
+
+// BIO_set_write_buffer_size returns zero.
+OPENSSL_EXPORT int BIO_set_write_buffer_size(BIO *bio, int buffer_size);
+
+// BIO_set_shutdown sets a method-specific "shutdown" bit on |bio|.
+OPENSSL_EXPORT void BIO_set_shutdown(BIO *bio, int shutdown);
+
+// BIO_get_shutdown returns the method-specific "shutdown" bit.
+OPENSSL_EXPORT int BIO_get_shutdown(BIO *bio);
+
+// BIO_meth_set_puts returns one. |BIO_puts| is implemented with |BIO_write| in
+// BoringSSL.
+OPENSSL_EXPORT int BIO_meth_set_puts(BIO_METHOD *method,
+                                     int (*puts)(BIO *, const char *));
+
+
+// Private functions
+
+#define BIO_FLAGS_READ 0x01
+#define BIO_FLAGS_WRITE 0x02
+#define BIO_FLAGS_IO_SPECIAL 0x04
+#define BIO_FLAGS_RWS (BIO_FLAGS_READ | BIO_FLAGS_WRITE | BIO_FLAGS_IO_SPECIAL)
+#define BIO_FLAGS_SHOULD_RETRY 0x08
+#define BIO_FLAGS_BASE64_NO_NL 0x100
+// BIO_FLAGS_MEM_RDONLY is used with memory BIOs. It means we shouldn't free up
+// or change the data in any way.
+#define BIO_FLAGS_MEM_RDONLY 0x200
+
+// These are the 'types' of BIOs
+#define BIO_TYPE_NONE 0
+#define BIO_TYPE_MEM (1 | 0x0400)
+#define BIO_TYPE_FILE (2 | 0x0400)
+#define BIO_TYPE_FD (4 | 0x0400 | 0x0100)
+#define BIO_TYPE_SOCKET (5 | 0x0400 | 0x0100)
+#define BIO_TYPE_NULL (6 | 0x0400)
+#define BIO_TYPE_SSL (7 | 0x0200)
+#define BIO_TYPE_MD (8 | 0x0200)                 // passive filter
+#define BIO_TYPE_BUFFER (9 | 0x0200)             // filter
+#define BIO_TYPE_CIPHER (10 | 0x0200)            // filter
+#define BIO_TYPE_BASE64 (11 | 0x0200)            // filter
+#define BIO_TYPE_CONNECT (12 | 0x0400 | 0x0100)  // socket - connect
+#define BIO_TYPE_ACCEPT (13 | 0x0400 | 0x0100)   // socket for accept
+#define BIO_TYPE_PROXY_CLIENT (14 | 0x0200)      // client proxy BIO
+#define BIO_TYPE_PROXY_SERVER (15 | 0x0200)      // server proxy BIO
+#define BIO_TYPE_NBIO_TEST (16 | 0x0200)         // server proxy BIO
+#define BIO_TYPE_NULL_FILTER (17 | 0x0200)
+#define BIO_TYPE_BER (18 | 0x0200)         // BER -> bin filter
+#define BIO_TYPE_BIO (19 | 0x0400)         // (half a) BIO pair
+#define BIO_TYPE_LINEBUFFER (20 | 0x0200)  // filter
+#define BIO_TYPE_DGRAM (21 | 0x0400 | 0x0100)
+#define BIO_TYPE_ASN1 (22 | 0x0200)  // filter
+#define BIO_TYPE_COMP (23 | 0x0200)  // filter
+
+// BIO_TYPE_DESCRIPTOR denotes that the |BIO| responds to the |BIO_C_SET_FD|
+// (|BIO_set_fd|) and |BIO_C_GET_FD| (|BIO_get_fd|) control hooks.
+#define BIO_TYPE_DESCRIPTOR 0x0100  // socket, fd, connect or accept
+#define BIO_TYPE_FILTER 0x0200
+#define BIO_TYPE_SOURCE_SINK 0x0400
+
+// BIO_TYPE_START is the first user-allocated |BIO| type. No pre-defined type,
+// flag bits aside, may exceed this value.
+#define BIO_TYPE_START 128
+
+struct bio_method_st {
+  int type;
+  const char *name;
+  int (*bwrite)(BIO *, const char *, int);
+  int (*bread)(BIO *, char *, int);
+  // TODO(fork): remove bputs.
+  int (*bputs)(BIO *, const char *);
+  int (*bgets)(BIO *, char *, int);
+  long (*ctrl)(BIO *, int, long, void *);
+  int (*create)(BIO *);
+  int (*destroy)(BIO *);
+  long (*callback_ctrl)(BIO *, int, bio_info_cb);
+};
+
+struct bio_st {
+  const BIO_METHOD *method;
+
+  // init is non-zero if this |BIO| has been initialised.
+  int init;
+  // shutdown is often used by specific |BIO_METHOD|s to determine whether
+  // they own some underlying resource. This flag can often by controlled by
+  // |BIO_set_close|. For example, whether an fd BIO closes the underlying fd
+  // when it, itself, is closed.
+  int shutdown;
+  int flags;
+  int retry_reason;
+  // num is a BIO-specific value. For example, in fd BIOs it's used to store a
+  // file descriptor.
+  int num;
+  CRYPTO_refcount_t references;
+  void *ptr;
+  // next_bio points to the next |BIO| in a chain. This |BIO| owns a reference
+  // to |next_bio|.
+  BIO *next_bio;  // used by filter BIOs
+  size_t num_read, num_write;
+};
+
+#define BIO_C_SET_CONNECT 100
+#define BIO_C_DO_STATE_MACHINE 101
+#define BIO_C_SET_NBIO 102
+#define BIO_C_SET_PROXY_PARAM 103
+#define BIO_C_SET_FD 104
+#define BIO_C_GET_FD 105
+#define BIO_C_SET_FILE_PTR 106
+#define BIO_C_GET_FILE_PTR 107
+#define BIO_C_SET_FILENAME 108
+#define BIO_C_SET_SSL 109
+#define BIO_C_GET_SSL 110
+#define BIO_C_SET_MD 111
+#define BIO_C_GET_MD 112
+#define BIO_C_GET_CIPHER_STATUS 113
+#define BIO_C_SET_BUF_MEM 114
+#define BIO_C_GET_BUF_MEM_PTR 115
+#define BIO_C_GET_BUFF_NUM_LINES 116
+#define BIO_C_SET_BUFF_SIZE 117
+#define BIO_C_SET_ACCEPT 118
+#define BIO_C_SSL_MODE 119
+#define BIO_C_GET_MD_CTX 120
+#define BIO_C_GET_PROXY_PARAM 121
+#define BIO_C_SET_BUFF_READ_DATA 122  // data to read first
+#define BIO_C_GET_ACCEPT 124
+#define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
+#define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
+#define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
+#define BIO_C_FILE_SEEK 128
+#define BIO_C_GET_CIPHER_CTX 129
+#define BIO_C_SET_BUF_MEM_EOF_RETURN 130  // return end of input value
+#define BIO_C_SET_BIND_MODE 131
+#define BIO_C_GET_BIND_MODE 132
+#define BIO_C_FILE_TELL 133
+#define BIO_C_GET_SOCKS 134
+#define BIO_C_SET_SOCKS 135
+
+#define BIO_C_SET_WRITE_BUF_SIZE 136  // for BIO_s_bio
+#define BIO_C_GET_WRITE_BUF_SIZE 137
+#define BIO_C_GET_WRITE_GUARANTEE 140
+#define BIO_C_GET_READ_REQUEST 141
+#define BIO_C_SHUTDOWN_WR 142
+#define BIO_C_NREAD0 143
+#define BIO_C_NREAD 144
+#define BIO_C_NWRITE0 145
+#define BIO_C_NWRITE 146
+#define BIO_C_RESET_READ_REQUEST 147
+#define BIO_C_SET_MD_CTX 148
+
+#define BIO_C_SET_PREFIX 149
+#define BIO_C_GET_PREFIX 150
+#define BIO_C_SET_SUFFIX 151
+#define BIO_C_GET_SUFFIX 152
+
+#define BIO_C_SET_EX_ARG 153
+#define BIO_C_GET_EX_ARG 154
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIO, BIO_free)
+BORINGSSL_MAKE_UP_REF(BIO, BIO_up_ref)
+BORINGSSL_MAKE_DELETER(BIO_METHOD, BIO_meth_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define BIO_R_BAD_FOPEN_MODE 100
+#define BIO_R_BROKEN_PIPE 101
+#define BIO_R_CONNECT_ERROR 102
+#define BIO_R_ERROR_SETTING_NBIO 103
+#define BIO_R_INVALID_ARGUMENT 104
+#define BIO_R_IN_USE 105
+#define BIO_R_KEEPALIVE 106
+#define BIO_R_NBIO_CONNECT_ERROR 107
+#define BIO_R_NO_HOSTNAME_SPECIFIED 108
+#define BIO_R_NO_PORT_SPECIFIED 109
+#define BIO_R_NO_SUCH_FILE 110
+#define BIO_R_NULL_PARAMETER 111
+#define BIO_R_SYS_LIB 112
+#define BIO_R_UNABLE_TO_CREATE_SOCKET 113
+#define BIO_R_UNINITIALIZED 114
+#define BIO_R_UNSUPPORTED_METHOD 115
+#define BIO_R_WRITE_TO_READ_ONLY_BIO 116
+
+#endif  // OPENSSL_HEADER_BIO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.back
new file mode 100644
index 0000000..da0dcdf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.back	
@@ -0,0 +1,933 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BIO_H
+#define OPENSSL_HEADER_BIO_H
+
+#include <openssl/base.h>
+
+#include <stdio.h>  // For FILE
+
+#include <openssl/buffer.h>
+#include <openssl/err.h>  // for ERR_print_errors_fp
+#include <openssl/ex_data.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BIO abstracts over a file-descriptor like interface.
+
+
+// Allocation and freeing.
+
+DEFINE_STACK_OF(BIO)
+
+// BIO_new creates a new BIO with the given method and a reference count of one.
+// It returns the fresh |BIO|, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new(const BIO_METHOD *method);
+
+// BIO_free decrements the reference count of |bio|. If the reference count
+// drops to zero, it calls the destroy callback, if present, on the method and
+// frees |bio| itself. It then repeats that for the next BIO in the chain, if
+// any.
+//
+// It returns one on success or zero otherwise.
+OPENSSL_EXPORT int BIO_free(BIO *bio);
+
+// BIO_vfree performs the same actions as |BIO_free|, but has a void return
+// value. This is provided for API-compat.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT void BIO_vfree(BIO *bio);
+
+// BIO_up_ref increments the reference count of |bio| and returns one.
+OPENSSL_EXPORT int BIO_up_ref(BIO *bio);
+
+
+// Basic I/O.
+
+// BIO_read attempts to read |len| bytes into |data|. It returns the number of
+// bytes read, zero on EOF, or a negative number on error.
+OPENSSL_EXPORT int BIO_read(BIO *bio, void *data, int len);
+
+// BIO_gets "reads a line" from |bio| and puts at most |size| bytes into |buf|.
+// It returns the number of bytes read or a negative number on error. The
+// phrase "reads a line" is in quotes in the previous sentence because the
+// exact operation depends on the BIO's method. For example, a digest BIO will
+// return the digest in response to a |BIO_gets| call.
+//
+// TODO(fork): audit the set of BIOs that we end up needing. If all actually
+// return a line for this call, remove the warning above.
+OPENSSL_EXPORT int BIO_gets(BIO *bio, char *buf, int size);
+
+// BIO_write writes |len| bytes from |data| to |bio|. It returns the number of
+// bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_write(BIO *bio, const void *data, int len);
+
+// BIO_write_all writes |len| bytes from |data| to |bio|, looping as necessary.
+// It returns one if all bytes were successfully written and zero on error.
+OPENSSL_EXPORT int BIO_write_all(BIO *bio, const void *data, size_t len);
+
+// BIO_puts writes a NUL terminated string from |buf| to |bio|. It returns the
+// number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_puts(BIO *bio, const char *buf);
+
+// BIO_flush flushes any buffered output. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_flush(BIO *bio);
+
+
+// Low-level control functions.
+//
+// These are generic functions for sending control requests to a BIO. In
+// general one should use the wrapper functions like |BIO_get_close|.
+
+// BIO_ctrl sends the control request |cmd| to |bio|. The |cmd| argument should
+// be one of the |BIO_C_*| values.
+OPENSSL_EXPORT long BIO_ctrl(BIO *bio, int cmd, long larg, void *parg);
+
+// BIO_ptr_ctrl acts like |BIO_ctrl| but passes the address of a |void*|
+// pointer as |parg| and returns the value that is written to it, or NULL if
+// the control request returns <= 0.
+OPENSSL_EXPORT char *BIO_ptr_ctrl(BIO *bp, int cmd, long larg);
+
+// BIO_int_ctrl acts like |BIO_ctrl| but passes the address of a copy of |iarg|
+// as |parg|.
+OPENSSL_EXPORT long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg);
+
+// BIO_reset resets |bio| to its initial state, the precise meaning of which
+// depends on the concrete type of |bio|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_reset(BIO *bio);
+
+// BIO_eof returns non-zero when |bio| has reached end-of-file. The precise
+// meaning of which depends on the concrete type of |bio|. Note that in the
+// case of BIO_pair this always returns non-zero.
+OPENSSL_EXPORT int BIO_eof(BIO *bio);
+
+// BIO_set_flags ORs |flags| with |bio->flags|.
+OPENSSL_EXPORT void BIO_set_flags(BIO *bio, int flags);
+
+// BIO_test_flags returns |bio->flags| AND |flags|.
+OPENSSL_EXPORT int BIO_test_flags(const BIO *bio, int flags);
+
+// BIO_should_read returns non-zero if |bio| encountered a temporary error
+// while reading (i.e. EAGAIN), indicating that the caller should retry the
+// read.
+OPENSSL_EXPORT int BIO_should_read(const BIO *bio);
+
+// BIO_should_write returns non-zero if |bio| encountered a temporary error
+// while writing (i.e. EAGAIN), indicating that the caller should retry the
+// write.
+OPENSSL_EXPORT int BIO_should_write(const BIO *bio);
+
+// BIO_should_retry returns non-zero if the reason that caused a failed I/O
+// operation is temporary and thus the operation should be retried. Otherwise,
+// it was a permanent error and it returns zero.
+OPENSSL_EXPORT int BIO_should_retry(const BIO *bio);
+
+// BIO_should_io_special returns non-zero if |bio| encountered a temporary
+// error while performing a special I/O operation, indicating that the caller
+// should retry. The operation that caused the error is returned by
+// |BIO_get_retry_reason|.
+OPENSSL_EXPORT int BIO_should_io_special(const BIO *bio);
+
+// BIO_RR_CONNECT indicates that a connect would have blocked
+#define BIO_RR_CONNECT 0x02
+
+// BIO_RR_ACCEPT indicates that an accept would have blocked
+#define BIO_RR_ACCEPT 0x03
+
+// BIO_get_retry_reason returns the special I/O operation that needs to be
+// retried. The return value is one of the |BIO_RR_*| values.
+OPENSSL_EXPORT int BIO_get_retry_reason(const BIO *bio);
+
+// BIO_clear_flags ANDs |bio->flags| with the bitwise-complement of |flags|.
+OPENSSL_EXPORT void BIO_clear_flags(BIO *bio, int flags);
+
+// BIO_set_retry_read sets the |BIO_FLAGS_READ| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_read(BIO *bio);
+
+// BIO_set_retry_write sets the |BIO_FLAGS_WRITE| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_write(BIO *bio);
+
+// BIO_get_retry_flags gets the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT int BIO_get_retry_flags(BIO *bio);
+
+// BIO_clear_retry_flags clears the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT void BIO_clear_retry_flags(BIO *bio);
+
+// BIO_method_type returns the type of |bio|, which is one of the |BIO_TYPE_*|
+// values.
+OPENSSL_EXPORT int BIO_method_type(const BIO *bio);
+
+// These are passed to the BIO callback
+#define BIO_CB_FREE 0x01
+#define BIO_CB_READ 0x02
+#define BIO_CB_WRITE 0x03
+#define BIO_CB_PUTS 0x04
+#define BIO_CB_GETS 0x05
+#define BIO_CB_CTRL 0x06
+
+// The callback is called before and after the underling operation,
+// The BIO_CB_RETURN flag indicates if it is after the call
+#define BIO_CB_RETURN 0x80
+
+// bio_info_cb is the type of a callback function that can be called for most
+// BIO operations. The |event| argument is one of |BIO_CB_*| and can be ORed
+// with |BIO_CB_RETURN| if the callback is being made after the operation in
+// question. In that case, |return_value| will contain the return value from
+// the operation.
+typedef long (*bio_info_cb)(BIO *bio, int event, const char *parg, int cmd,
+                            long larg, long return_value);
+
+// BIO_callback_ctrl allows the callback function to be manipulated. The |cmd|
+// arg will generally be |BIO_CTRL_SET_CALLBACK| but arbitrary command values
+// can be interpreted by the |BIO|.
+OPENSSL_EXPORT long BIO_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp);
+
+// BIO_pending returns the number of bytes pending to be read.
+OPENSSL_EXPORT size_t BIO_pending(const BIO *bio);
+
+// BIO_ctrl_pending calls |BIO_pending| and exists only for compatibility with
+// OpenSSL.
+OPENSSL_EXPORT size_t BIO_ctrl_pending(const BIO *bio);
+
+// BIO_wpending returns the number of bytes pending to be written.
+OPENSSL_EXPORT size_t BIO_wpending(const BIO *bio);
+
+// BIO_set_close sets the close flag for |bio|. The meaning of which depends on
+// the type of |bio| but, for example, a memory BIO interprets the close flag
+// as meaning that it owns its buffer. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_set_close(BIO *bio, int close_flag);
+
+// BIO_number_read returns the number of bytes that have been read from
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_read(const BIO *bio);
+
+// BIO_number_written returns the number of bytes that have been written to
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_written(const BIO *bio);
+
+
+// Managing chains of BIOs.
+//
+// BIOs can be put into chains where the output of one is used as the input of
+// the next etc. The most common case is a buffering BIO, which accepts and
+// buffers writes until flushed into the next BIO in the chain.
+
+// BIO_push adds |appended_bio| to the end of the chain with |bio| at the head.
+// It returns |bio|. Note that |appended_bio| may be the head of a chain itself
+// and thus this function can be used to join two chains.
+//
+// BIO_push takes ownership of the caller's reference to |appended_bio|.
+OPENSSL_EXPORT BIO *BIO_push(BIO *bio, BIO *appended_bio);
+
+// BIO_pop removes |bio| from the head of a chain and returns the next BIO in
+// the chain, or NULL if there is no next BIO.
+//
+// The caller takes ownership of the chain's reference to |bio|.
+OPENSSL_EXPORT BIO *BIO_pop(BIO *bio);
+
+// BIO_next returns the next BIO in the chain after |bio|, or NULL if there is
+// no such BIO.
+OPENSSL_EXPORT BIO *BIO_next(BIO *bio);
+
+// BIO_free_all calls |BIO_free|.
+//
+// TODO(fork): update callers and remove.
+OPENSSL_EXPORT void BIO_free_all(BIO *bio);
+
+// BIO_find_type walks a chain of BIOs and returns the first that matches
+// |type|, which is one of the |BIO_TYPE_*| values.
+OPENSSL_EXPORT BIO *BIO_find_type(BIO *bio, int type);
+
+// BIO_copy_next_retry sets the retry flags and |retry_reason| of |bio| from
+// the next BIO in the chain.
+OPENSSL_EXPORT void BIO_copy_next_retry(BIO *bio);
+
+
+// Printf functions.
+
+// BIO_printf behaves like |printf| but outputs to |bio| rather than a |FILE|.
+// It returns the number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_printf(BIO *bio, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(2, 3);
+
+
+// Utility functions.
+
+// BIO_indent prints min(|indent|, |max_indent|) spaces. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_indent(BIO *bio, unsigned indent, unsigned max_indent);
+
+// BIO_hexdump writes a hex dump of |data| to |bio|. Each line will be indented
+// by |indent| spaces.
+OPENSSL_EXPORT int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len,
+                               unsigned indent);
+
+// ERR_print_errors prints the current contents of the error stack to |bio|
+// using human readable strings where possible.
+OPENSSL_EXPORT void ERR_print_errors(BIO *bio);
+
+// BIO_read_asn1 reads a single ASN.1 object from |bio|. If successful it sets
+// |*out| to be an allocated buffer (that should be freed with |OPENSSL_free|),
+// |*out_size| to the length, in bytes, of that buffer and returns one.
+// Otherwise it returns zero.
+//
+// If the length of the object is greater than |max_len| or 2^32 then the
+// function will fail. Long-form tags are not supported. If the length of the
+// object is indefinite the full contents of |bio| are read, unless it would be
+// greater than |max_len|, in which case the function fails.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT int BIO_read_asn1(BIO *bio, uint8_t **out, size_t *out_len,
+                                 size_t max_len);
+
+
+// Memory BIOs.
+//
+// Memory BIOs can be used as a read-only source (with |BIO_new_mem_buf|) or a
+// writable sink (with |BIO_new|, |BIO_s_mem| and |BIO_mem_contents|). Data
+// written to a writable, memory BIO can be recalled by reading from it.
+//
+// Calling |BIO_reset| on a read-only BIO resets it to the original contents.
+// On a writable BIO, it clears any data.
+//
+// If the close flag is set to |BIO_NOCLOSE| (not the default) then the
+// underlying |BUF_MEM| will not be freed when the |BIO| is freed.
+//
+// Memory BIOs support |BIO_gets| and |BIO_puts|.
+//
+// |BIO_ctrl_pending| returns the number of bytes currently stored.
+
+// BIO_NOCLOSE and |BIO_CLOSE| can be used as symbolic arguments when a "close
+// flag" is passed to a BIO function.
+#define BIO_NOCLOSE 0
+#define BIO_CLOSE 1
+
+// BIO_s_mem returns a |BIO_METHOD| that uses a in-memory buffer.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_mem(void);
+
+// BIO_new_mem_buf creates read-only BIO that reads from |len| bytes at |buf|.
+// It does not take ownership of |buf|. It returns the BIO or NULL on error.
+//
+// If |len| is negative, then |buf| is treated as a NUL-terminated string, but
+// don't depend on this in new code.
+OPENSSL_EXPORT BIO *BIO_new_mem_buf(const void *buf, int len);
+
+// BIO_mem_contents sets |*out_contents| to point to the current contents of
+// |bio| and |*out_len| to contain the length of that data. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_mem_contents(const BIO *bio,
+                                    const uint8_t **out_contents,
+                                    size_t *out_len);
+
+// BIO_get_mem_data sets |*contents| to point to the current contents of |bio|
+// and returns the length of the data.
+//
+// WARNING: don't use this, use |BIO_mem_contents|. A return value of zero from
+// this function can mean either that it failed or that the memory buffer is
+// empty.
+OPENSSL_EXPORT long BIO_get_mem_data(BIO *bio, char **contents);
+
+// BIO_get_mem_ptr sets |*out| to a BUF_MEM containing the current contents of
+// |bio|. It returns one on success or zero on error.
+OPENSSL_EXPORT int BIO_get_mem_ptr(BIO *bio, BUF_MEM **out);
+
+// BIO_set_mem_buf sets |b| as the contents of |bio|. If |take_ownership| is
+// non-zero, then |b| will be freed when |bio| is closed. Returns one on
+// success or zero otherwise.
+OPENSSL_EXPORT int BIO_set_mem_buf(BIO *bio, BUF_MEM *b, int take_ownership);
+
+// BIO_set_mem_eof_return sets the value that will be returned from reading
+// |bio| when empty. If |eof_value| is zero then an empty memory BIO will
+// return EOF (that is it will return zero and |BIO_should_retry| will be
+// false). If |eof_value| is non zero then it will return |eof_value| when it
+// is empty and it will set the read retry flag (that is |BIO_read_retry| is
+// true). To avoid ambiguity with a normal positive return value, |eof_value|
+// should be set to a negative value, typically -1.
+//
+// For a read-only BIO, the default is zero (EOF). For a writable BIO, the
+// default is -1 so that additional data can be written once exhausted.
+OPENSSL_EXPORT int BIO_set_mem_eof_return(BIO *bio, int eof_value);
+
+
+// File descriptor BIOs.
+//
+// File descriptor BIOs are wrappers around the system's |read| and |write|
+// functions. If the close flag is set then then |close| is called on the
+// underlying file descriptor when the BIO is freed.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |lseek|.
+
+// BIO_s_fd returns a |BIO_METHOD| for file descriptor fds.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_fd(void);
+
+// BIO_new_fd creates a new file descriptor BIO wrapping |fd|. If |close_flag|
+// is non-zero, then |fd| will be closed when the BIO is.
+OPENSSL_EXPORT BIO *BIO_new_fd(int fd, int close_flag);
+
+// BIO_set_fd sets the file descriptor of |bio| to |fd|. If |close_flag| is
+// non-zero then |fd| will be closed when |bio| is. It returns one on success
+// or zero on error.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_set_fd(BIO *bio, int fd, int close_flag);
+
+// BIO_get_fd returns the file descriptor currently in use by |bio| or -1 if
+// |bio| does not wrap a file descriptor. If there is a file descriptor and
+// |out_fd| is not NULL, it also sets |*out_fd| to the file descriptor.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_get_fd(BIO *bio, int *out_fd);
+
+
+// File BIOs.
+//
+// File BIOs are wrappers around a C |FILE| object.
+//
+// |BIO_flush| on a file BIO calls |fflush| on the wrapped stream.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |fseek|.
+//
+// Setting the close flag causes |fclose| to be called on the stream when the
+// BIO is freed.
+
+// BIO_s_file returns a BIO_METHOD that wraps a |FILE|.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_file(void);
+
+// BIO_new_file creates a file BIO by opening |filename| with the given mode.
+// See the |fopen| manual page for details of the mode argument.
+OPENSSL_EXPORT BIO *BIO_new_file(const char *filename, const char *mode);
+
+// BIO_new_fp creates a new file BIO that wraps the given |FILE|. If
+// |close_flag| is |BIO_CLOSE|, then |fclose| will be called on |stream| when
+// the BIO is closed.
+OPENSSL_EXPORT BIO *BIO_new_fp(FILE *stream, int close_flag);
+
+// BIO_get_fp sets |*out_file| to the current |FILE| for |bio|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int BIO_get_fp(BIO *bio, FILE **out_file);
+
+// BIO_set_fp sets the |FILE| for |bio|. If |close_flag| is |BIO_CLOSE| then
+// |fclose| will be called on |file| when |bio| is closed. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_fp(BIO *bio, FILE *file, int close_flag);
+
+// BIO_read_filename opens |filename| for reading and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_read_filename(BIO *bio, const char *filename);
+
+// BIO_write_filename opens |filename| for writing and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_write_filename(BIO *bio, const char *filename);
+
+// BIO_append_filename opens |filename| for appending and sets the result as
+// the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_append_filename(BIO *bio, const char *filename);
+
+// BIO_rw_filename opens |filename| for reading and writing and sets the result
+// as the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_rw_filename(BIO *bio, const char *filename);
+
+
+// Socket BIOs.
+//
+// Socket BIOs behave like file descriptor BIOs but, on Windows systems, wrap
+// the system's |recv| and |send| functions instead of |read| and |write|. On
+// Windows, file descriptors are provided by C runtime and are not
+// interchangeable with sockets.
+//
+// Socket BIOs may be used with |BIO_set_fd| and |BIO_get_fd|.
+//
+// TODO(davidben): Add separate APIs and fix the internals to use |SOCKET|s
+// around rather than rely on int casts.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_socket(void);
+
+// BIO_new_socket allocates and initialises a fresh BIO which will read and
+// write to the socket |fd|. If |close_flag| is |BIO_CLOSE| then closing the
+// BIO will close |fd|. It returns the fresh |BIO| or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_socket(int fd, int close_flag);
+
+
+// Connect BIOs.
+//
+// A connection BIO creates a network connection and transfers data over the
+// resulting socket.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_connect(void);
+
+// BIO_new_connect returns a BIO that connects to the given hostname and port.
+// The |host_and_optional_port| argument should be of the form
+// "www.example.com" or "www.example.com:443". If the port is omitted, it must
+// be provided with |BIO_set_conn_port|.
+//
+// It returns the new BIO on success, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_connect(const char *host_and_optional_port);
+
+// BIO_set_conn_hostname sets |host_and_optional_port| as the hostname and
+// optional port that |bio| will connect to. If the port is omitted, it must be
+// provided with |BIO_set_conn_port|.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_hostname(BIO *bio,
+                                         const char *host_and_optional_port);
+
+// BIO_set_conn_port sets |port_str| as the port or service name that |bio|
+// will connect to. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_port(BIO *bio, const char *port_str);
+
+// BIO_set_conn_int_port sets |*port| as the port that |bio| will connect to.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_int_port(BIO *bio, const int *port);
+
+// BIO_set_nbio sets whether |bio| will use non-blocking I/O operations. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_nbio(BIO *bio, int on);
+
+// BIO_do_connect connects |bio| if it has not been connected yet. It returns
+// one on success and <= 0 otherwise.
+OPENSSL_EXPORT int BIO_do_connect(BIO *bio);
+
+
+// Datagram BIOs.
+//
+// TODO(fork): not implemented.
+
+#define BIO_CTRL_DGRAM_QUERY_MTU 40  // as kernel for current MTU
+
+#define BIO_CTRL_DGRAM_SET_MTU 42 /* set cached value for  MTU. want to use
+                                     this if asking the kernel fails */
+
+#define BIO_CTRL_DGRAM_MTU_EXCEEDED 43 /* check whether the MTU was exceed in
+                                          the previous write operation. */
+
+// BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT is unsupported as it is unused by consumers
+// and depends on |timeval|, which is not 2038-clean on all platforms.
+
+#define BIO_CTRL_DGRAM_GET_PEER           46
+
+#define BIO_CTRL_DGRAM_GET_FALLBACK_MTU   47
+
+
+// BIO Pairs.
+//
+// BIO pairs provide a "loopback" like system: a pair of BIOs where data
+// written to one can be read from the other and vice versa.
+
+// BIO_new_bio_pair sets |*out1| and |*out2| to two freshly created BIOs where
+// data written to one can be read from the other and vice versa. The
+// |writebuf1| argument gives the size of the buffer used in |*out1| and
+// |writebuf2| for |*out2|. It returns one on success and zero on error.
+OPENSSL_EXPORT int BIO_new_bio_pair(BIO **out1, size_t writebuf1, BIO **out2,
+                                    size_t writebuf2);
+
+// BIO_ctrl_get_read_request returns the number of bytes that the other side of
+// |bio| tried (unsuccessfully) to read.
+OPENSSL_EXPORT size_t BIO_ctrl_get_read_request(BIO *bio);
+
+// BIO_ctrl_get_write_guarantee returns the number of bytes that |bio| (which
+// must have been returned by |BIO_new_bio_pair|) will accept on the next
+// |BIO_write| call.
+OPENSSL_EXPORT size_t BIO_ctrl_get_write_guarantee(BIO *bio);
+
+// BIO_shutdown_wr marks |bio| as closed, from the point of view of the other
+// side of the pair. Future |BIO_write| calls on |bio| will fail. It returns
+// one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_shutdown_wr(BIO *bio);
+
+
+// Custom BIOs.
+//
+// Consumers can create custom |BIO|s by filling in a |BIO_METHOD| and using
+// low-level control functions to set state.
+
+// BIO_get_new_index returns a new "type" value for a custom |BIO|.
+OPENSSL_EXPORT int BIO_get_new_index(void);
+
+// BIO_meth_new returns a newly-allocated |BIO_METHOD| or NULL on allocation
+// error. The |type| specifies the type that will be returned by
+// |BIO_method_type|. If this is unnecessary, this value may be zero. The |name|
+// parameter is vestigial and may be NULL.
+//
+// Use the |BIO_meth_set_*| functions below to initialize the |BIO_METHOD|. The
+// function implementations may use |BIO_set_data| and |BIO_get_data| to add
+// method-specific state to associated |BIO|s. Additionally, |BIO_set_init| must
+// be called after an associated |BIO| is fully initialized. State set via
+// |BIO_set_data| may be released by configuring a destructor with
+// |BIO_meth_set_destroy|.
+OPENSSL_EXPORT BIO_METHOD *BIO_meth_new(int type, const char *name);
+
+// BIO_meth_free releases memory associated with |method|.
+OPENSSL_EXPORT void BIO_meth_free(BIO_METHOD *method);
+
+// BIO_meth_set_create sets a function to be called on |BIO_new| for |method|
+// and returns one. The function should return one on success and zero on
+// error.
+OPENSSL_EXPORT int BIO_meth_set_create(BIO_METHOD *method,
+                                       int (*create)(BIO *));
+
+// BIO_meth_set_destroy sets a function to release data associated with a |BIO|
+// and returns one. The function's return value is ignored.
+OPENSSL_EXPORT int BIO_meth_set_destroy(BIO_METHOD *method,
+                                        int (*destroy)(BIO *));
+
+// BIO_meth_set_write sets the implementation of |BIO_write| for |method| and
+// returns one. |BIO_METHOD|s which implement |BIO_write| should also implement
+// |BIO_CTRL_FLUSH|. (See |BIO_meth_set_ctrl|.)
+OPENSSL_EXPORT int BIO_meth_set_write(BIO_METHOD *method,
+                                      int (*write)(BIO *, const char *, int));
+
+// BIO_meth_set_read sets the implementation of |BIO_read| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_read(BIO_METHOD *method,
+                                     int (*read)(BIO *, char *, int));
+
+// BIO_meth_set_gets sets the implementation of |BIO_gets| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_gets(BIO_METHOD *method,
+                                     int (*gets)(BIO *, char *, int));
+
+// BIO_meth_set_ctrl sets the implementation of |BIO_ctrl| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_ctrl(BIO_METHOD *method,
+                                     long (*ctrl)(BIO *, int, long, void *));
+
+// BIO_set_data sets custom data on |bio|. It may be retried with
+// |BIO_get_data|.
+OPENSSL_EXPORT void BIO_set_data(BIO *bio, void *ptr);
+
+// BIO_get_data returns custom data on |bio| set by |BIO_get_data|.
+OPENSSL_EXPORT void *BIO_get_data(BIO *bio);
+
+// BIO_set_init sets whether |bio| has been fully initialized. Until fully
+// initialized, |BIO_read| and |BIO_write| will fail.
+OPENSSL_EXPORT void BIO_set_init(BIO *bio, int init);
+
+// BIO_get_init returns whether |bio| has been fully initialized.
+OPENSSL_EXPORT int BIO_get_init(BIO *bio);
+
+// These are values of the |cmd| argument to |BIO_ctrl|.
+
+// BIO_CTRL_RESET implements |BIO_reset|. The arguments are unused.
+#define BIO_CTRL_RESET 1
+
+// BIO_CTRL_EOF implements |BIO_eof|. The arguments are unused.
+#define BIO_CTRL_EOF 2
+
+// BIO_CTRL_INFO is a legacy command that returns information specific to the
+// type of |BIO|. It is not safe to call generically and should not be
+// implemented in new |BIO| types.
+#define BIO_CTRL_INFO 3
+
+// BIO_CTRL_GET_CLOSE returns the close flag set by |BIO_CTRL_SET_CLOSE|. The
+// arguments are unused.
+#define BIO_CTRL_GET_CLOSE 8
+
+// BIO_CTRL_SET_CLOSE implements |BIO_set_close|. The |larg| argument is the
+// close flag.
+#define BIO_CTRL_SET_CLOSE 9
+
+// BIO_CTRL_PENDING implements |BIO_pending|. The arguments are unused.
+#define BIO_CTRL_PENDING 10
+
+// BIO_CTRL_FLUSH implements |BIO_flush|. The arguments are unused.
+#define BIO_CTRL_FLUSH 11
+
+// BIO_CTRL_WPENDING implements |BIO_wpending|. The arguments are unused.
+#define BIO_CTRL_WPENDING 13
+
+// BIO_CTRL_SET_CALLBACK sets an informational callback of type
+// int cb(BIO *bio, int state, int ret)
+#define BIO_CTRL_SET_CALLBACK 14
+
+// BIO_CTRL_GET_CALLBACK returns the callback set by |BIO_CTRL_SET_CALLBACK|.
+#define BIO_CTRL_GET_CALLBACK 15
+
+// The following are never used, but are defined to aid porting existing code.
+#define BIO_CTRL_SET 4
+#define BIO_CTRL_GET 5
+#define BIO_CTRL_PUSH 6
+#define BIO_CTRL_POP 7
+#define BIO_CTRL_DUP 12
+#define BIO_CTRL_SET_FILENAME 30
+
+
+// Deprecated functions.
+
+// BIO_f_base64 returns a filter |BIO| that base64-encodes data written into
+// it, and decodes data read from it. |BIO_gets| is not supported. Call
+// |BIO_flush| when done writing, to signal that no more data are to be
+// encoded. The flag |BIO_FLAGS_BASE64_NO_NL| may be set to encode all the data
+// on one line.
+//
+// Use |EVP_EncodeBlock| and |EVP_DecodeBase64| instead.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_base64(void);
+
+OPENSSL_EXPORT void BIO_set_retry_special(BIO *bio);
+
+// BIO_set_write_buffer_size returns zero.
+OPENSSL_EXPORT int BIO_set_write_buffer_size(BIO *bio, int buffer_size);
+
+// BIO_set_shutdown sets a method-specific "shutdown" bit on |bio|.
+OPENSSL_EXPORT void BIO_set_shutdown(BIO *bio, int shutdown);
+
+// BIO_get_shutdown returns the method-specific "shutdown" bit.
+OPENSSL_EXPORT int BIO_get_shutdown(BIO *bio);
+
+// BIO_meth_set_puts returns one. |BIO_puts| is implemented with |BIO_write| in
+// BoringSSL.
+OPENSSL_EXPORT int BIO_meth_set_puts(BIO_METHOD *method,
+                                     int (*puts)(BIO *, const char *));
+
+
+// Private functions
+
+#define BIO_FLAGS_READ 0x01
+#define BIO_FLAGS_WRITE 0x02
+#define BIO_FLAGS_IO_SPECIAL 0x04
+#define BIO_FLAGS_RWS (BIO_FLAGS_READ | BIO_FLAGS_WRITE | BIO_FLAGS_IO_SPECIAL)
+#define BIO_FLAGS_SHOULD_RETRY 0x08
+#define BIO_FLAGS_BASE64_NO_NL 0x100
+// BIO_FLAGS_MEM_RDONLY is used with memory BIOs. It means we shouldn't free up
+// or change the data in any way.
+#define BIO_FLAGS_MEM_RDONLY 0x200
+
+// These are the 'types' of BIOs
+#define BIO_TYPE_NONE 0
+#define BIO_TYPE_MEM (1 | 0x0400)
+#define BIO_TYPE_FILE (2 | 0x0400)
+#define BIO_TYPE_FD (4 | 0x0400 | 0x0100)
+#define BIO_TYPE_SOCKET (5 | 0x0400 | 0x0100)
+#define BIO_TYPE_NULL (6 | 0x0400)
+#define BIO_TYPE_SSL (7 | 0x0200)
+#define BIO_TYPE_MD (8 | 0x0200)                 // passive filter
+#define BIO_TYPE_BUFFER (9 | 0x0200)             // filter
+#define BIO_TYPE_CIPHER (10 | 0x0200)            // filter
+#define BIO_TYPE_BASE64 (11 | 0x0200)            // filter
+#define BIO_TYPE_CONNECT (12 | 0x0400 | 0x0100)  // socket - connect
+#define BIO_TYPE_ACCEPT (13 | 0x0400 | 0x0100)   // socket for accept
+#define BIO_TYPE_PROXY_CLIENT (14 | 0x0200)      // client proxy BIO
+#define BIO_TYPE_PROXY_SERVER (15 | 0x0200)      // server proxy BIO
+#define BIO_TYPE_NBIO_TEST (16 | 0x0200)         // server proxy BIO
+#define BIO_TYPE_NULL_FILTER (17 | 0x0200)
+#define BIO_TYPE_BER (18 | 0x0200)         // BER -> bin filter
+#define BIO_TYPE_BIO (19 | 0x0400)         // (half a) BIO pair
+#define BIO_TYPE_LINEBUFFER (20 | 0x0200)  // filter
+#define BIO_TYPE_DGRAM (21 | 0x0400 | 0x0100)
+#define BIO_TYPE_ASN1 (22 | 0x0200)  // filter
+#define BIO_TYPE_COMP (23 | 0x0200)  // filter
+
+// BIO_TYPE_DESCRIPTOR denotes that the |BIO| responds to the |BIO_C_SET_FD|
+// (|BIO_set_fd|) and |BIO_C_GET_FD| (|BIO_get_fd|) control hooks.
+#define BIO_TYPE_DESCRIPTOR 0x0100  // socket, fd, connect or accept
+#define BIO_TYPE_FILTER 0x0200
+#define BIO_TYPE_SOURCE_SINK 0x0400
+
+// BIO_TYPE_START is the first user-allocated |BIO| type. No pre-defined type,
+// flag bits aside, may exceed this value.
+#define BIO_TYPE_START 128
+
+struct bio_method_st {
+  int type;
+  const char *name;
+  int (*bwrite)(BIO *, const char *, int);
+  int (*bread)(BIO *, char *, int);
+  // TODO(fork): remove bputs.
+  int (*bputs)(BIO *, const char *);
+  int (*bgets)(BIO *, char *, int);
+  long (*ctrl)(BIO *, int, long, void *);
+  int (*create)(BIO *);
+  int (*destroy)(BIO *);
+  long (*callback_ctrl)(BIO *, int, bio_info_cb);
+};
+
+struct bio_st {
+  const BIO_METHOD *method;
+
+  // init is non-zero if this |BIO| has been initialised.
+  int init;
+  // shutdown is often used by specific |BIO_METHOD|s to determine whether
+  // they own some underlying resource. This flag can often by controlled by
+  // |BIO_set_close|. For example, whether an fd BIO closes the underlying fd
+  // when it, itself, is closed.
+  int shutdown;
+  int flags;
+  int retry_reason;
+  // num is a BIO-specific value. For example, in fd BIOs it's used to store a
+  // file descriptor.
+  int num;
+  CRYPTO_refcount_t references;
+  void *ptr;
+  // next_bio points to the next |BIO| in a chain. This |BIO| owns a reference
+  // to |next_bio|.
+  BIO *next_bio;  // used by filter BIOs
+  size_t num_read, num_write;
+};
+
+#define BIO_C_SET_CONNECT 100
+#define BIO_C_DO_STATE_MACHINE 101
+#define BIO_C_SET_NBIO 102
+#define BIO_C_SET_PROXY_PARAM 103
+#define BIO_C_SET_FD 104
+#define BIO_C_GET_FD 105
+#define BIO_C_SET_FILE_PTR 106
+#define BIO_C_GET_FILE_PTR 107
+#define BIO_C_SET_FILENAME 108
+#define BIO_C_SET_SSL 109
+#define BIO_C_GET_SSL 110
+#define BIO_C_SET_MD 111
+#define BIO_C_GET_MD 112
+#define BIO_C_GET_CIPHER_STATUS 113
+#define BIO_C_SET_BUF_MEM 114
+#define BIO_C_GET_BUF_MEM_PTR 115
+#define BIO_C_GET_BUFF_NUM_LINES 116
+#define BIO_C_SET_BUFF_SIZE 117
+#define BIO_C_SET_ACCEPT 118
+#define BIO_C_SSL_MODE 119
+#define BIO_C_GET_MD_CTX 120
+#define BIO_C_GET_PROXY_PARAM 121
+#define BIO_C_SET_BUFF_READ_DATA 122  // data to read first
+#define BIO_C_GET_ACCEPT 124
+#define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
+#define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
+#define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
+#define BIO_C_FILE_SEEK 128
+#define BIO_C_GET_CIPHER_CTX 129
+#define BIO_C_SET_BUF_MEM_EOF_RETURN 130  // return end of input value
+#define BIO_C_SET_BIND_MODE 131
+#define BIO_C_GET_BIND_MODE 132
+#define BIO_C_FILE_TELL 133
+#define BIO_C_GET_SOCKS 134
+#define BIO_C_SET_SOCKS 135
+
+#define BIO_C_SET_WRITE_BUF_SIZE 136  // for BIO_s_bio
+#define BIO_C_GET_WRITE_BUF_SIZE 137
+#define BIO_C_GET_WRITE_GUARANTEE 140
+#define BIO_C_GET_READ_REQUEST 141
+#define BIO_C_SHUTDOWN_WR 142
+#define BIO_C_NREAD0 143
+#define BIO_C_NREAD 144
+#define BIO_C_NWRITE0 145
+#define BIO_C_NWRITE 146
+#define BIO_C_RESET_READ_REQUEST 147
+#define BIO_C_SET_MD_CTX 148
+
+#define BIO_C_SET_PREFIX 149
+#define BIO_C_GET_PREFIX 150
+#define BIO_C_SET_SUFFIX 151
+#define BIO_C_GET_SUFFIX 152
+
+#define BIO_C_SET_EX_ARG 153
+#define BIO_C_GET_EX_ARG 154
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIO, BIO_free)
+BORINGSSL_MAKE_UP_REF(BIO, BIO_up_ref)
+BORINGSSL_MAKE_DELETER(BIO_METHOD, BIO_meth_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define BIO_R_BAD_FOPEN_MODE 100
+#define BIO_R_BROKEN_PIPE 101
+#define BIO_R_CONNECT_ERROR 102
+#define BIO_R_ERROR_SETTING_NBIO 103
+#define BIO_R_INVALID_ARGUMENT 104
+#define BIO_R_IN_USE 105
+#define BIO_R_KEEPALIVE 106
+#define BIO_R_NBIO_CONNECT_ERROR 107
+#define BIO_R_NO_HOSTNAME_SPECIFIED 108
+#define BIO_R_NO_PORT_SPECIFIED 109
+#define BIO_R_NO_SUCH_FILE 110
+#define BIO_R_NULL_PARAMETER 111
+#define BIO_R_SYS_LIB 112
+#define BIO_R_UNABLE_TO_CREATE_SOCKET 113
+#define BIO_R_UNINITIALIZED 114
+#define BIO_R_UNSUPPORTED_METHOD 115
+#define BIO_R_WRITE_TO_READ_ONLY_BIO 116
+
+#endif  // OPENSSL_HEADER_BIO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.grpc_back
new file mode 100644
index 0000000..da0dcdf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bio.h.grpc_back	
@@ -0,0 +1,933 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BIO_H
+#define OPENSSL_HEADER_BIO_H
+
+#include <openssl/base.h>
+
+#include <stdio.h>  // For FILE
+
+#include <openssl/buffer.h>
+#include <openssl/err.h>  // for ERR_print_errors_fp
+#include <openssl/ex_data.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BIO abstracts over a file-descriptor like interface.
+
+
+// Allocation and freeing.
+
+DEFINE_STACK_OF(BIO)
+
+// BIO_new creates a new BIO with the given method and a reference count of one.
+// It returns the fresh |BIO|, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new(const BIO_METHOD *method);
+
+// BIO_free decrements the reference count of |bio|. If the reference count
+// drops to zero, it calls the destroy callback, if present, on the method and
+// frees |bio| itself. It then repeats that for the next BIO in the chain, if
+// any.
+//
+// It returns one on success or zero otherwise.
+OPENSSL_EXPORT int BIO_free(BIO *bio);
+
+// BIO_vfree performs the same actions as |BIO_free|, but has a void return
+// value. This is provided for API-compat.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT void BIO_vfree(BIO *bio);
+
+// BIO_up_ref increments the reference count of |bio| and returns one.
+OPENSSL_EXPORT int BIO_up_ref(BIO *bio);
+
+
+// Basic I/O.
+
+// BIO_read attempts to read |len| bytes into |data|. It returns the number of
+// bytes read, zero on EOF, or a negative number on error.
+OPENSSL_EXPORT int BIO_read(BIO *bio, void *data, int len);
+
+// BIO_gets "reads a line" from |bio| and puts at most |size| bytes into |buf|.
+// It returns the number of bytes read or a negative number on error. The
+// phrase "reads a line" is in quotes in the previous sentence because the
+// exact operation depends on the BIO's method. For example, a digest BIO will
+// return the digest in response to a |BIO_gets| call.
+//
+// TODO(fork): audit the set of BIOs that we end up needing. If all actually
+// return a line for this call, remove the warning above.
+OPENSSL_EXPORT int BIO_gets(BIO *bio, char *buf, int size);
+
+// BIO_write writes |len| bytes from |data| to |bio|. It returns the number of
+// bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_write(BIO *bio, const void *data, int len);
+
+// BIO_write_all writes |len| bytes from |data| to |bio|, looping as necessary.
+// It returns one if all bytes were successfully written and zero on error.
+OPENSSL_EXPORT int BIO_write_all(BIO *bio, const void *data, size_t len);
+
+// BIO_puts writes a NUL terminated string from |buf| to |bio|. It returns the
+// number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_puts(BIO *bio, const char *buf);
+
+// BIO_flush flushes any buffered output. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_flush(BIO *bio);
+
+
+// Low-level control functions.
+//
+// These are generic functions for sending control requests to a BIO. In
+// general one should use the wrapper functions like |BIO_get_close|.
+
+// BIO_ctrl sends the control request |cmd| to |bio|. The |cmd| argument should
+// be one of the |BIO_C_*| values.
+OPENSSL_EXPORT long BIO_ctrl(BIO *bio, int cmd, long larg, void *parg);
+
+// BIO_ptr_ctrl acts like |BIO_ctrl| but passes the address of a |void*|
+// pointer as |parg| and returns the value that is written to it, or NULL if
+// the control request returns <= 0.
+OPENSSL_EXPORT char *BIO_ptr_ctrl(BIO *bp, int cmd, long larg);
+
+// BIO_int_ctrl acts like |BIO_ctrl| but passes the address of a copy of |iarg|
+// as |parg|.
+OPENSSL_EXPORT long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg);
+
+// BIO_reset resets |bio| to its initial state, the precise meaning of which
+// depends on the concrete type of |bio|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_reset(BIO *bio);
+
+// BIO_eof returns non-zero when |bio| has reached end-of-file. The precise
+// meaning of which depends on the concrete type of |bio|. Note that in the
+// case of BIO_pair this always returns non-zero.
+OPENSSL_EXPORT int BIO_eof(BIO *bio);
+
+// BIO_set_flags ORs |flags| with |bio->flags|.
+OPENSSL_EXPORT void BIO_set_flags(BIO *bio, int flags);
+
+// BIO_test_flags returns |bio->flags| AND |flags|.
+OPENSSL_EXPORT int BIO_test_flags(const BIO *bio, int flags);
+
+// BIO_should_read returns non-zero if |bio| encountered a temporary error
+// while reading (i.e. EAGAIN), indicating that the caller should retry the
+// read.
+OPENSSL_EXPORT int BIO_should_read(const BIO *bio);
+
+// BIO_should_write returns non-zero if |bio| encountered a temporary error
+// while writing (i.e. EAGAIN), indicating that the caller should retry the
+// write.
+OPENSSL_EXPORT int BIO_should_write(const BIO *bio);
+
+// BIO_should_retry returns non-zero if the reason that caused a failed I/O
+// operation is temporary and thus the operation should be retried. Otherwise,
+// it was a permanent error and it returns zero.
+OPENSSL_EXPORT int BIO_should_retry(const BIO *bio);
+
+// BIO_should_io_special returns non-zero if |bio| encountered a temporary
+// error while performing a special I/O operation, indicating that the caller
+// should retry. The operation that caused the error is returned by
+// |BIO_get_retry_reason|.
+OPENSSL_EXPORT int BIO_should_io_special(const BIO *bio);
+
+// BIO_RR_CONNECT indicates that a connect would have blocked
+#define BIO_RR_CONNECT 0x02
+
+// BIO_RR_ACCEPT indicates that an accept would have blocked
+#define BIO_RR_ACCEPT 0x03
+
+// BIO_get_retry_reason returns the special I/O operation that needs to be
+// retried. The return value is one of the |BIO_RR_*| values.
+OPENSSL_EXPORT int BIO_get_retry_reason(const BIO *bio);
+
+// BIO_clear_flags ANDs |bio->flags| with the bitwise-complement of |flags|.
+OPENSSL_EXPORT void BIO_clear_flags(BIO *bio, int flags);
+
+// BIO_set_retry_read sets the |BIO_FLAGS_READ| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_read(BIO *bio);
+
+// BIO_set_retry_write sets the |BIO_FLAGS_WRITE| and |BIO_FLAGS_SHOULD_RETRY|
+// flags on |bio|.
+OPENSSL_EXPORT void BIO_set_retry_write(BIO *bio);
+
+// BIO_get_retry_flags gets the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT int BIO_get_retry_flags(BIO *bio);
+
+// BIO_clear_retry_flags clears the |BIO_FLAGS_READ|, |BIO_FLAGS_WRITE|,
+// |BIO_FLAGS_IO_SPECIAL| and |BIO_FLAGS_SHOULD_RETRY| flags from |bio|.
+OPENSSL_EXPORT void BIO_clear_retry_flags(BIO *bio);
+
+// BIO_method_type returns the type of |bio|, which is one of the |BIO_TYPE_*|
+// values.
+OPENSSL_EXPORT int BIO_method_type(const BIO *bio);
+
+// These are passed to the BIO callback
+#define BIO_CB_FREE 0x01
+#define BIO_CB_READ 0x02
+#define BIO_CB_WRITE 0x03
+#define BIO_CB_PUTS 0x04
+#define BIO_CB_GETS 0x05
+#define BIO_CB_CTRL 0x06
+
+// The callback is called before and after the underling operation,
+// The BIO_CB_RETURN flag indicates if it is after the call
+#define BIO_CB_RETURN 0x80
+
+// bio_info_cb is the type of a callback function that can be called for most
+// BIO operations. The |event| argument is one of |BIO_CB_*| and can be ORed
+// with |BIO_CB_RETURN| if the callback is being made after the operation in
+// question. In that case, |return_value| will contain the return value from
+// the operation.
+typedef long (*bio_info_cb)(BIO *bio, int event, const char *parg, int cmd,
+                            long larg, long return_value);
+
+// BIO_callback_ctrl allows the callback function to be manipulated. The |cmd|
+// arg will generally be |BIO_CTRL_SET_CALLBACK| but arbitrary command values
+// can be interpreted by the |BIO|.
+OPENSSL_EXPORT long BIO_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp);
+
+// BIO_pending returns the number of bytes pending to be read.
+OPENSSL_EXPORT size_t BIO_pending(const BIO *bio);
+
+// BIO_ctrl_pending calls |BIO_pending| and exists only for compatibility with
+// OpenSSL.
+OPENSSL_EXPORT size_t BIO_ctrl_pending(const BIO *bio);
+
+// BIO_wpending returns the number of bytes pending to be written.
+OPENSSL_EXPORT size_t BIO_wpending(const BIO *bio);
+
+// BIO_set_close sets the close flag for |bio|. The meaning of which depends on
+// the type of |bio| but, for example, a memory BIO interprets the close flag
+// as meaning that it owns its buffer. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BIO_set_close(BIO *bio, int close_flag);
+
+// BIO_number_read returns the number of bytes that have been read from
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_read(const BIO *bio);
+
+// BIO_number_written returns the number of bytes that have been written to
+// |bio|.
+OPENSSL_EXPORT size_t BIO_number_written(const BIO *bio);
+
+
+// Managing chains of BIOs.
+//
+// BIOs can be put into chains where the output of one is used as the input of
+// the next etc. The most common case is a buffering BIO, which accepts and
+// buffers writes until flushed into the next BIO in the chain.
+
+// BIO_push adds |appended_bio| to the end of the chain with |bio| at the head.
+// It returns |bio|. Note that |appended_bio| may be the head of a chain itself
+// and thus this function can be used to join two chains.
+//
+// BIO_push takes ownership of the caller's reference to |appended_bio|.
+OPENSSL_EXPORT BIO *BIO_push(BIO *bio, BIO *appended_bio);
+
+// BIO_pop removes |bio| from the head of a chain and returns the next BIO in
+// the chain, or NULL if there is no next BIO.
+//
+// The caller takes ownership of the chain's reference to |bio|.
+OPENSSL_EXPORT BIO *BIO_pop(BIO *bio);
+
+// BIO_next returns the next BIO in the chain after |bio|, or NULL if there is
+// no such BIO.
+OPENSSL_EXPORT BIO *BIO_next(BIO *bio);
+
+// BIO_free_all calls |BIO_free|.
+//
+// TODO(fork): update callers and remove.
+OPENSSL_EXPORT void BIO_free_all(BIO *bio);
+
+// BIO_find_type walks a chain of BIOs and returns the first that matches
+// |type|, which is one of the |BIO_TYPE_*| values.
+OPENSSL_EXPORT BIO *BIO_find_type(BIO *bio, int type);
+
+// BIO_copy_next_retry sets the retry flags and |retry_reason| of |bio| from
+// the next BIO in the chain.
+OPENSSL_EXPORT void BIO_copy_next_retry(BIO *bio);
+
+
+// Printf functions.
+
+// BIO_printf behaves like |printf| but outputs to |bio| rather than a |FILE|.
+// It returns the number of bytes written or a negative number on error.
+OPENSSL_EXPORT int BIO_printf(BIO *bio, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(2, 3);
+
+
+// Utility functions.
+
+// BIO_indent prints min(|indent|, |max_indent|) spaces. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_indent(BIO *bio, unsigned indent, unsigned max_indent);
+
+// BIO_hexdump writes a hex dump of |data| to |bio|. Each line will be indented
+// by |indent| spaces.
+OPENSSL_EXPORT int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len,
+                               unsigned indent);
+
+// ERR_print_errors prints the current contents of the error stack to |bio|
+// using human readable strings where possible.
+OPENSSL_EXPORT void ERR_print_errors(BIO *bio);
+
+// BIO_read_asn1 reads a single ASN.1 object from |bio|. If successful it sets
+// |*out| to be an allocated buffer (that should be freed with |OPENSSL_free|),
+// |*out_size| to the length, in bytes, of that buffer and returns one.
+// Otherwise it returns zero.
+//
+// If the length of the object is greater than |max_len| or 2^32 then the
+// function will fail. Long-form tags are not supported. If the length of the
+// object is indefinite the full contents of |bio| are read, unless it would be
+// greater than |max_len|, in which case the function fails.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT int BIO_read_asn1(BIO *bio, uint8_t **out, size_t *out_len,
+                                 size_t max_len);
+
+
+// Memory BIOs.
+//
+// Memory BIOs can be used as a read-only source (with |BIO_new_mem_buf|) or a
+// writable sink (with |BIO_new|, |BIO_s_mem| and |BIO_mem_contents|). Data
+// written to a writable, memory BIO can be recalled by reading from it.
+//
+// Calling |BIO_reset| on a read-only BIO resets it to the original contents.
+// On a writable BIO, it clears any data.
+//
+// If the close flag is set to |BIO_NOCLOSE| (not the default) then the
+// underlying |BUF_MEM| will not be freed when the |BIO| is freed.
+//
+// Memory BIOs support |BIO_gets| and |BIO_puts|.
+//
+// |BIO_ctrl_pending| returns the number of bytes currently stored.
+
+// BIO_NOCLOSE and |BIO_CLOSE| can be used as symbolic arguments when a "close
+// flag" is passed to a BIO function.
+#define BIO_NOCLOSE 0
+#define BIO_CLOSE 1
+
+// BIO_s_mem returns a |BIO_METHOD| that uses a in-memory buffer.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_mem(void);
+
+// BIO_new_mem_buf creates read-only BIO that reads from |len| bytes at |buf|.
+// It does not take ownership of |buf|. It returns the BIO or NULL on error.
+//
+// If |len| is negative, then |buf| is treated as a NUL-terminated string, but
+// don't depend on this in new code.
+OPENSSL_EXPORT BIO *BIO_new_mem_buf(const void *buf, int len);
+
+// BIO_mem_contents sets |*out_contents| to point to the current contents of
+// |bio| and |*out_len| to contain the length of that data. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_mem_contents(const BIO *bio,
+                                    const uint8_t **out_contents,
+                                    size_t *out_len);
+
+// BIO_get_mem_data sets |*contents| to point to the current contents of |bio|
+// and returns the length of the data.
+//
+// WARNING: don't use this, use |BIO_mem_contents|. A return value of zero from
+// this function can mean either that it failed or that the memory buffer is
+// empty.
+OPENSSL_EXPORT long BIO_get_mem_data(BIO *bio, char **contents);
+
+// BIO_get_mem_ptr sets |*out| to a BUF_MEM containing the current contents of
+// |bio|. It returns one on success or zero on error.
+OPENSSL_EXPORT int BIO_get_mem_ptr(BIO *bio, BUF_MEM **out);
+
+// BIO_set_mem_buf sets |b| as the contents of |bio|. If |take_ownership| is
+// non-zero, then |b| will be freed when |bio| is closed. Returns one on
+// success or zero otherwise.
+OPENSSL_EXPORT int BIO_set_mem_buf(BIO *bio, BUF_MEM *b, int take_ownership);
+
+// BIO_set_mem_eof_return sets the value that will be returned from reading
+// |bio| when empty. If |eof_value| is zero then an empty memory BIO will
+// return EOF (that is it will return zero and |BIO_should_retry| will be
+// false). If |eof_value| is non zero then it will return |eof_value| when it
+// is empty and it will set the read retry flag (that is |BIO_read_retry| is
+// true). To avoid ambiguity with a normal positive return value, |eof_value|
+// should be set to a negative value, typically -1.
+//
+// For a read-only BIO, the default is zero (EOF). For a writable BIO, the
+// default is -1 so that additional data can be written once exhausted.
+OPENSSL_EXPORT int BIO_set_mem_eof_return(BIO *bio, int eof_value);
+
+
+// File descriptor BIOs.
+//
+// File descriptor BIOs are wrappers around the system's |read| and |write|
+// functions. If the close flag is set then then |close| is called on the
+// underlying file descriptor when the BIO is freed.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |lseek|.
+
+// BIO_s_fd returns a |BIO_METHOD| for file descriptor fds.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_fd(void);
+
+// BIO_new_fd creates a new file descriptor BIO wrapping |fd|. If |close_flag|
+// is non-zero, then |fd| will be closed when the BIO is.
+OPENSSL_EXPORT BIO *BIO_new_fd(int fd, int close_flag);
+
+// BIO_set_fd sets the file descriptor of |bio| to |fd|. If |close_flag| is
+// non-zero then |fd| will be closed when |bio| is. It returns one on success
+// or zero on error.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_set_fd(BIO *bio, int fd, int close_flag);
+
+// BIO_get_fd returns the file descriptor currently in use by |bio| or -1 if
+// |bio| does not wrap a file descriptor. If there is a file descriptor and
+// |out_fd| is not NULL, it also sets |*out_fd| to the file descriptor.
+//
+// This function may also be used with socket BIOs (see |BIO_s_socket| and
+// |BIO_new_socket|).
+OPENSSL_EXPORT int BIO_get_fd(BIO *bio, int *out_fd);
+
+
+// File BIOs.
+//
+// File BIOs are wrappers around a C |FILE| object.
+//
+// |BIO_flush| on a file BIO calls |fflush| on the wrapped stream.
+//
+// |BIO_reset| attempts to seek the file pointer to the start of file using
+// |fseek|.
+//
+// Setting the close flag causes |fclose| to be called on the stream when the
+// BIO is freed.
+
+// BIO_s_file returns a BIO_METHOD that wraps a |FILE|.
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_file(void);
+
+// BIO_new_file creates a file BIO by opening |filename| with the given mode.
+// See the |fopen| manual page for details of the mode argument.
+OPENSSL_EXPORT BIO *BIO_new_file(const char *filename, const char *mode);
+
+// BIO_new_fp creates a new file BIO that wraps the given |FILE|. If
+// |close_flag| is |BIO_CLOSE|, then |fclose| will be called on |stream| when
+// the BIO is closed.
+OPENSSL_EXPORT BIO *BIO_new_fp(FILE *stream, int close_flag);
+
+// BIO_get_fp sets |*out_file| to the current |FILE| for |bio|. It returns one
+// on success and zero otherwise.
+OPENSSL_EXPORT int BIO_get_fp(BIO *bio, FILE **out_file);
+
+// BIO_set_fp sets the |FILE| for |bio|. If |close_flag| is |BIO_CLOSE| then
+// |fclose| will be called on |file| when |bio| is closed. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_fp(BIO *bio, FILE *file, int close_flag);
+
+// BIO_read_filename opens |filename| for reading and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_read_filename(BIO *bio, const char *filename);
+
+// BIO_write_filename opens |filename| for writing and sets the result as the
+// |FILE| for |bio|. It returns one on success and zero otherwise. The |FILE|
+// will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_write_filename(BIO *bio, const char *filename);
+
+// BIO_append_filename opens |filename| for appending and sets the result as
+// the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_append_filename(BIO *bio, const char *filename);
+
+// BIO_rw_filename opens |filename| for reading and writing and sets the result
+// as the |FILE| for |bio|. It returns one on success and zero otherwise. The
+// |FILE| will be closed when |bio| is freed.
+OPENSSL_EXPORT int BIO_rw_filename(BIO *bio, const char *filename);
+
+
+// Socket BIOs.
+//
+// Socket BIOs behave like file descriptor BIOs but, on Windows systems, wrap
+// the system's |recv| and |send| functions instead of |read| and |write|. On
+// Windows, file descriptors are provided by C runtime and are not
+// interchangeable with sockets.
+//
+// Socket BIOs may be used with |BIO_set_fd| and |BIO_get_fd|.
+//
+// TODO(davidben): Add separate APIs and fix the internals to use |SOCKET|s
+// around rather than rely on int casts.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_socket(void);
+
+// BIO_new_socket allocates and initialises a fresh BIO which will read and
+// write to the socket |fd|. If |close_flag| is |BIO_CLOSE| then closing the
+// BIO will close |fd|. It returns the fresh |BIO| or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_socket(int fd, int close_flag);
+
+
+// Connect BIOs.
+//
+// A connection BIO creates a network connection and transfers data over the
+// resulting socket.
+
+OPENSSL_EXPORT const BIO_METHOD *BIO_s_connect(void);
+
+// BIO_new_connect returns a BIO that connects to the given hostname and port.
+// The |host_and_optional_port| argument should be of the form
+// "www.example.com" or "www.example.com:443". If the port is omitted, it must
+// be provided with |BIO_set_conn_port|.
+//
+// It returns the new BIO on success, or NULL on error.
+OPENSSL_EXPORT BIO *BIO_new_connect(const char *host_and_optional_port);
+
+// BIO_set_conn_hostname sets |host_and_optional_port| as the hostname and
+// optional port that |bio| will connect to. If the port is omitted, it must be
+// provided with |BIO_set_conn_port|.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_hostname(BIO *bio,
+                                         const char *host_and_optional_port);
+
+// BIO_set_conn_port sets |port_str| as the port or service name that |bio|
+// will connect to. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_port(BIO *bio, const char *port_str);
+
+// BIO_set_conn_int_port sets |*port| as the port that |bio| will connect to.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_conn_int_port(BIO *bio, const int *port);
+
+// BIO_set_nbio sets whether |bio| will use non-blocking I/O operations. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_set_nbio(BIO *bio, int on);
+
+// BIO_do_connect connects |bio| if it has not been connected yet. It returns
+// one on success and <= 0 otherwise.
+OPENSSL_EXPORT int BIO_do_connect(BIO *bio);
+
+
+// Datagram BIOs.
+//
+// TODO(fork): not implemented.
+
+#define BIO_CTRL_DGRAM_QUERY_MTU 40  // as kernel for current MTU
+
+#define BIO_CTRL_DGRAM_SET_MTU 42 /* set cached value for  MTU. want to use
+                                     this if asking the kernel fails */
+
+#define BIO_CTRL_DGRAM_MTU_EXCEEDED 43 /* check whether the MTU was exceed in
+                                          the previous write operation. */
+
+// BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT is unsupported as it is unused by consumers
+// and depends on |timeval|, which is not 2038-clean on all platforms.
+
+#define BIO_CTRL_DGRAM_GET_PEER           46
+
+#define BIO_CTRL_DGRAM_GET_FALLBACK_MTU   47
+
+
+// BIO Pairs.
+//
+// BIO pairs provide a "loopback" like system: a pair of BIOs where data
+// written to one can be read from the other and vice versa.
+
+// BIO_new_bio_pair sets |*out1| and |*out2| to two freshly created BIOs where
+// data written to one can be read from the other and vice versa. The
+// |writebuf1| argument gives the size of the buffer used in |*out1| and
+// |writebuf2| for |*out2|. It returns one on success and zero on error.
+OPENSSL_EXPORT int BIO_new_bio_pair(BIO **out1, size_t writebuf1, BIO **out2,
+                                    size_t writebuf2);
+
+// BIO_ctrl_get_read_request returns the number of bytes that the other side of
+// |bio| tried (unsuccessfully) to read.
+OPENSSL_EXPORT size_t BIO_ctrl_get_read_request(BIO *bio);
+
+// BIO_ctrl_get_write_guarantee returns the number of bytes that |bio| (which
+// must have been returned by |BIO_new_bio_pair|) will accept on the next
+// |BIO_write| call.
+OPENSSL_EXPORT size_t BIO_ctrl_get_write_guarantee(BIO *bio);
+
+// BIO_shutdown_wr marks |bio| as closed, from the point of view of the other
+// side of the pair. Future |BIO_write| calls on |bio| will fail. It returns
+// one on success and zero otherwise.
+OPENSSL_EXPORT int BIO_shutdown_wr(BIO *bio);
+
+
+// Custom BIOs.
+//
+// Consumers can create custom |BIO|s by filling in a |BIO_METHOD| and using
+// low-level control functions to set state.
+
+// BIO_get_new_index returns a new "type" value for a custom |BIO|.
+OPENSSL_EXPORT int BIO_get_new_index(void);
+
+// BIO_meth_new returns a newly-allocated |BIO_METHOD| or NULL on allocation
+// error. The |type| specifies the type that will be returned by
+// |BIO_method_type|. If this is unnecessary, this value may be zero. The |name|
+// parameter is vestigial and may be NULL.
+//
+// Use the |BIO_meth_set_*| functions below to initialize the |BIO_METHOD|. The
+// function implementations may use |BIO_set_data| and |BIO_get_data| to add
+// method-specific state to associated |BIO|s. Additionally, |BIO_set_init| must
+// be called after an associated |BIO| is fully initialized. State set via
+// |BIO_set_data| may be released by configuring a destructor with
+// |BIO_meth_set_destroy|.
+OPENSSL_EXPORT BIO_METHOD *BIO_meth_new(int type, const char *name);
+
+// BIO_meth_free releases memory associated with |method|.
+OPENSSL_EXPORT void BIO_meth_free(BIO_METHOD *method);
+
+// BIO_meth_set_create sets a function to be called on |BIO_new| for |method|
+// and returns one. The function should return one on success and zero on
+// error.
+OPENSSL_EXPORT int BIO_meth_set_create(BIO_METHOD *method,
+                                       int (*create)(BIO *));
+
+// BIO_meth_set_destroy sets a function to release data associated with a |BIO|
+// and returns one. The function's return value is ignored.
+OPENSSL_EXPORT int BIO_meth_set_destroy(BIO_METHOD *method,
+                                        int (*destroy)(BIO *));
+
+// BIO_meth_set_write sets the implementation of |BIO_write| for |method| and
+// returns one. |BIO_METHOD|s which implement |BIO_write| should also implement
+// |BIO_CTRL_FLUSH|. (See |BIO_meth_set_ctrl|.)
+OPENSSL_EXPORT int BIO_meth_set_write(BIO_METHOD *method,
+                                      int (*write)(BIO *, const char *, int));
+
+// BIO_meth_set_read sets the implementation of |BIO_read| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_read(BIO_METHOD *method,
+                                     int (*read)(BIO *, char *, int));
+
+// BIO_meth_set_gets sets the implementation of |BIO_gets| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_gets(BIO_METHOD *method,
+                                     int (*gets)(BIO *, char *, int));
+
+// BIO_meth_set_ctrl sets the implementation of |BIO_ctrl| for |method| and
+// returns one.
+OPENSSL_EXPORT int BIO_meth_set_ctrl(BIO_METHOD *method,
+                                     long (*ctrl)(BIO *, int, long, void *));
+
+// BIO_set_data sets custom data on |bio|. It may be retried with
+// |BIO_get_data|.
+OPENSSL_EXPORT void BIO_set_data(BIO *bio, void *ptr);
+
+// BIO_get_data returns custom data on |bio| set by |BIO_get_data|.
+OPENSSL_EXPORT void *BIO_get_data(BIO *bio);
+
+// BIO_set_init sets whether |bio| has been fully initialized. Until fully
+// initialized, |BIO_read| and |BIO_write| will fail.
+OPENSSL_EXPORT void BIO_set_init(BIO *bio, int init);
+
+// BIO_get_init returns whether |bio| has been fully initialized.
+OPENSSL_EXPORT int BIO_get_init(BIO *bio);
+
+// These are values of the |cmd| argument to |BIO_ctrl|.
+
+// BIO_CTRL_RESET implements |BIO_reset|. The arguments are unused.
+#define BIO_CTRL_RESET 1
+
+// BIO_CTRL_EOF implements |BIO_eof|. The arguments are unused.
+#define BIO_CTRL_EOF 2
+
+// BIO_CTRL_INFO is a legacy command that returns information specific to the
+// type of |BIO|. It is not safe to call generically and should not be
+// implemented in new |BIO| types.
+#define BIO_CTRL_INFO 3
+
+// BIO_CTRL_GET_CLOSE returns the close flag set by |BIO_CTRL_SET_CLOSE|. The
+// arguments are unused.
+#define BIO_CTRL_GET_CLOSE 8
+
+// BIO_CTRL_SET_CLOSE implements |BIO_set_close|. The |larg| argument is the
+// close flag.
+#define BIO_CTRL_SET_CLOSE 9
+
+// BIO_CTRL_PENDING implements |BIO_pending|. The arguments are unused.
+#define BIO_CTRL_PENDING 10
+
+// BIO_CTRL_FLUSH implements |BIO_flush|. The arguments are unused.
+#define BIO_CTRL_FLUSH 11
+
+// BIO_CTRL_WPENDING implements |BIO_wpending|. The arguments are unused.
+#define BIO_CTRL_WPENDING 13
+
+// BIO_CTRL_SET_CALLBACK sets an informational callback of type
+// int cb(BIO *bio, int state, int ret)
+#define BIO_CTRL_SET_CALLBACK 14
+
+// BIO_CTRL_GET_CALLBACK returns the callback set by |BIO_CTRL_SET_CALLBACK|.
+#define BIO_CTRL_GET_CALLBACK 15
+
+// The following are never used, but are defined to aid porting existing code.
+#define BIO_CTRL_SET 4
+#define BIO_CTRL_GET 5
+#define BIO_CTRL_PUSH 6
+#define BIO_CTRL_POP 7
+#define BIO_CTRL_DUP 12
+#define BIO_CTRL_SET_FILENAME 30
+
+
+// Deprecated functions.
+
+// BIO_f_base64 returns a filter |BIO| that base64-encodes data written into
+// it, and decodes data read from it. |BIO_gets| is not supported. Call
+// |BIO_flush| when done writing, to signal that no more data are to be
+// encoded. The flag |BIO_FLAGS_BASE64_NO_NL| may be set to encode all the data
+// on one line.
+//
+// Use |EVP_EncodeBlock| and |EVP_DecodeBase64| instead.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_base64(void);
+
+OPENSSL_EXPORT void BIO_set_retry_special(BIO *bio);
+
+// BIO_set_write_buffer_size returns zero.
+OPENSSL_EXPORT int BIO_set_write_buffer_size(BIO *bio, int buffer_size);
+
+// BIO_set_shutdown sets a method-specific "shutdown" bit on |bio|.
+OPENSSL_EXPORT void BIO_set_shutdown(BIO *bio, int shutdown);
+
+// BIO_get_shutdown returns the method-specific "shutdown" bit.
+OPENSSL_EXPORT int BIO_get_shutdown(BIO *bio);
+
+// BIO_meth_set_puts returns one. |BIO_puts| is implemented with |BIO_write| in
+// BoringSSL.
+OPENSSL_EXPORT int BIO_meth_set_puts(BIO_METHOD *method,
+                                     int (*puts)(BIO *, const char *));
+
+
+// Private functions
+
+#define BIO_FLAGS_READ 0x01
+#define BIO_FLAGS_WRITE 0x02
+#define BIO_FLAGS_IO_SPECIAL 0x04
+#define BIO_FLAGS_RWS (BIO_FLAGS_READ | BIO_FLAGS_WRITE | BIO_FLAGS_IO_SPECIAL)
+#define BIO_FLAGS_SHOULD_RETRY 0x08
+#define BIO_FLAGS_BASE64_NO_NL 0x100
+// BIO_FLAGS_MEM_RDONLY is used with memory BIOs. It means we shouldn't free up
+// or change the data in any way.
+#define BIO_FLAGS_MEM_RDONLY 0x200
+
+// These are the 'types' of BIOs
+#define BIO_TYPE_NONE 0
+#define BIO_TYPE_MEM (1 | 0x0400)
+#define BIO_TYPE_FILE (2 | 0x0400)
+#define BIO_TYPE_FD (4 | 0x0400 | 0x0100)
+#define BIO_TYPE_SOCKET (5 | 0x0400 | 0x0100)
+#define BIO_TYPE_NULL (6 | 0x0400)
+#define BIO_TYPE_SSL (7 | 0x0200)
+#define BIO_TYPE_MD (8 | 0x0200)                 // passive filter
+#define BIO_TYPE_BUFFER (9 | 0x0200)             // filter
+#define BIO_TYPE_CIPHER (10 | 0x0200)            // filter
+#define BIO_TYPE_BASE64 (11 | 0x0200)            // filter
+#define BIO_TYPE_CONNECT (12 | 0x0400 | 0x0100)  // socket - connect
+#define BIO_TYPE_ACCEPT (13 | 0x0400 | 0x0100)   // socket for accept
+#define BIO_TYPE_PROXY_CLIENT (14 | 0x0200)      // client proxy BIO
+#define BIO_TYPE_PROXY_SERVER (15 | 0x0200)      // server proxy BIO
+#define BIO_TYPE_NBIO_TEST (16 | 0x0200)         // server proxy BIO
+#define BIO_TYPE_NULL_FILTER (17 | 0x0200)
+#define BIO_TYPE_BER (18 | 0x0200)         // BER -> bin filter
+#define BIO_TYPE_BIO (19 | 0x0400)         // (half a) BIO pair
+#define BIO_TYPE_LINEBUFFER (20 | 0x0200)  // filter
+#define BIO_TYPE_DGRAM (21 | 0x0400 | 0x0100)
+#define BIO_TYPE_ASN1 (22 | 0x0200)  // filter
+#define BIO_TYPE_COMP (23 | 0x0200)  // filter
+
+// BIO_TYPE_DESCRIPTOR denotes that the |BIO| responds to the |BIO_C_SET_FD|
+// (|BIO_set_fd|) and |BIO_C_GET_FD| (|BIO_get_fd|) control hooks.
+#define BIO_TYPE_DESCRIPTOR 0x0100  // socket, fd, connect or accept
+#define BIO_TYPE_FILTER 0x0200
+#define BIO_TYPE_SOURCE_SINK 0x0400
+
+// BIO_TYPE_START is the first user-allocated |BIO| type. No pre-defined type,
+// flag bits aside, may exceed this value.
+#define BIO_TYPE_START 128
+
+struct bio_method_st {
+  int type;
+  const char *name;
+  int (*bwrite)(BIO *, const char *, int);
+  int (*bread)(BIO *, char *, int);
+  // TODO(fork): remove bputs.
+  int (*bputs)(BIO *, const char *);
+  int (*bgets)(BIO *, char *, int);
+  long (*ctrl)(BIO *, int, long, void *);
+  int (*create)(BIO *);
+  int (*destroy)(BIO *);
+  long (*callback_ctrl)(BIO *, int, bio_info_cb);
+};
+
+struct bio_st {
+  const BIO_METHOD *method;
+
+  // init is non-zero if this |BIO| has been initialised.
+  int init;
+  // shutdown is often used by specific |BIO_METHOD|s to determine whether
+  // they own some underlying resource. This flag can often by controlled by
+  // |BIO_set_close|. For example, whether an fd BIO closes the underlying fd
+  // when it, itself, is closed.
+  int shutdown;
+  int flags;
+  int retry_reason;
+  // num is a BIO-specific value. For example, in fd BIOs it's used to store a
+  // file descriptor.
+  int num;
+  CRYPTO_refcount_t references;
+  void *ptr;
+  // next_bio points to the next |BIO| in a chain. This |BIO| owns a reference
+  // to |next_bio|.
+  BIO *next_bio;  // used by filter BIOs
+  size_t num_read, num_write;
+};
+
+#define BIO_C_SET_CONNECT 100
+#define BIO_C_DO_STATE_MACHINE 101
+#define BIO_C_SET_NBIO 102
+#define BIO_C_SET_PROXY_PARAM 103
+#define BIO_C_SET_FD 104
+#define BIO_C_GET_FD 105
+#define BIO_C_SET_FILE_PTR 106
+#define BIO_C_GET_FILE_PTR 107
+#define BIO_C_SET_FILENAME 108
+#define BIO_C_SET_SSL 109
+#define BIO_C_GET_SSL 110
+#define BIO_C_SET_MD 111
+#define BIO_C_GET_MD 112
+#define BIO_C_GET_CIPHER_STATUS 113
+#define BIO_C_SET_BUF_MEM 114
+#define BIO_C_GET_BUF_MEM_PTR 115
+#define BIO_C_GET_BUFF_NUM_LINES 116
+#define BIO_C_SET_BUFF_SIZE 117
+#define BIO_C_SET_ACCEPT 118
+#define BIO_C_SSL_MODE 119
+#define BIO_C_GET_MD_CTX 120
+#define BIO_C_GET_PROXY_PARAM 121
+#define BIO_C_SET_BUFF_READ_DATA 122  // data to read first
+#define BIO_C_GET_ACCEPT 124
+#define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
+#define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
+#define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
+#define BIO_C_FILE_SEEK 128
+#define BIO_C_GET_CIPHER_CTX 129
+#define BIO_C_SET_BUF_MEM_EOF_RETURN 130  // return end of input value
+#define BIO_C_SET_BIND_MODE 131
+#define BIO_C_GET_BIND_MODE 132
+#define BIO_C_FILE_TELL 133
+#define BIO_C_GET_SOCKS 134
+#define BIO_C_SET_SOCKS 135
+
+#define BIO_C_SET_WRITE_BUF_SIZE 136  // for BIO_s_bio
+#define BIO_C_GET_WRITE_BUF_SIZE 137
+#define BIO_C_GET_WRITE_GUARANTEE 140
+#define BIO_C_GET_READ_REQUEST 141
+#define BIO_C_SHUTDOWN_WR 142
+#define BIO_C_NREAD0 143
+#define BIO_C_NREAD 144
+#define BIO_C_NWRITE0 145
+#define BIO_C_NWRITE 146
+#define BIO_C_RESET_READ_REQUEST 147
+#define BIO_C_SET_MD_CTX 148
+
+#define BIO_C_SET_PREFIX 149
+#define BIO_C_GET_PREFIX 150
+#define BIO_C_SET_SUFFIX 151
+#define BIO_C_GET_SUFFIX 152
+
+#define BIO_C_SET_EX_ARG 153
+#define BIO_C_GET_EX_ARG 154
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIO, BIO_free)
+BORINGSSL_MAKE_UP_REF(BIO, BIO_up_ref)
+BORINGSSL_MAKE_DELETER(BIO_METHOD, BIO_meth_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define BIO_R_BAD_FOPEN_MODE 100
+#define BIO_R_BROKEN_PIPE 101
+#define BIO_R_CONNECT_ERROR 102
+#define BIO_R_ERROR_SETTING_NBIO 103
+#define BIO_R_INVALID_ARGUMENT 104
+#define BIO_R_IN_USE 105
+#define BIO_R_KEEPALIVE 106
+#define BIO_R_NBIO_CONNECT_ERROR 107
+#define BIO_R_NO_HOSTNAME_SPECIFIED 108
+#define BIO_R_NO_PORT_SPECIFIED 109
+#define BIO_R_NO_SUCH_FILE 110
+#define BIO_R_NULL_PARAMETER 111
+#define BIO_R_SYS_LIB 112
+#define BIO_R_UNABLE_TO_CREATE_SOCKET 113
+#define BIO_R_UNINITIALIZED 114
+#define BIO_R_UNSUPPORTED_METHOD 115
+#define BIO_R_WRITE_TO_READ_ONLY_BIO 116
+
+#endif  // OPENSSL_HEADER_BIO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h
new file mode 100644
index 0000000..c0e701d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BLOWFISH_H
+#define OPENSSL_HEADER_BLOWFISH_H
+
+#include <openssl_grpc/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define BF_ENCRYPT 1
+#define BF_DECRYPT 0
+
+#define BF_ROUNDS 16
+#define BF_BLOCK 8
+
+typedef struct bf_key_st {
+  uint32_t P[BF_ROUNDS + 2];
+  uint32_t S[4 * 256];
+} BF_KEY;
+
+OPENSSL_EXPORT void BF_set_key(BF_KEY *key, size_t len, const uint8_t *data);
+OPENSSL_EXPORT void BF_encrypt(uint32_t *data, const BF_KEY *key);
+OPENSSL_EXPORT void BF_decrypt(uint32_t *data, const BF_KEY *key);
+
+OPENSSL_EXPORT void BF_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                   const BF_KEY *key, int enc);
+OPENSSL_EXPORT void BF_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                   size_t length, const BF_KEY *schedule,
+                                   uint8_t *ivec, int enc);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_BLOWFISH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.back
new file mode 100644
index 0000000..293b175
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.back	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BLOWFISH_H
+#define OPENSSL_HEADER_BLOWFISH_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define BF_ENCRYPT 1
+#define BF_DECRYPT 0
+
+#define BF_ROUNDS 16
+#define BF_BLOCK 8
+
+typedef struct bf_key_st {
+  uint32_t P[BF_ROUNDS + 2];
+  uint32_t S[4 * 256];
+} BF_KEY;
+
+OPENSSL_EXPORT void BF_set_key(BF_KEY *key, size_t len, const uint8_t *data);
+OPENSSL_EXPORT void BF_encrypt(uint32_t *data, const BF_KEY *key);
+OPENSSL_EXPORT void BF_decrypt(uint32_t *data, const BF_KEY *key);
+
+OPENSSL_EXPORT void BF_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                   const BF_KEY *key, int enc);
+OPENSSL_EXPORT void BF_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                   size_t length, const BF_KEY *schedule,
+                                   uint8_t *ivec, int enc);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_BLOWFISH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.grpc_back
new file mode 100644
index 0000000..293b175
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/blowfish.h.grpc_back	
@@ -0,0 +1,93 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BLOWFISH_H
+#define OPENSSL_HEADER_BLOWFISH_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define BF_ENCRYPT 1
+#define BF_DECRYPT 0
+
+#define BF_ROUNDS 16
+#define BF_BLOCK 8
+
+typedef struct bf_key_st {
+  uint32_t P[BF_ROUNDS + 2];
+  uint32_t S[4 * 256];
+} BF_KEY;
+
+OPENSSL_EXPORT void BF_set_key(BF_KEY *key, size_t len, const uint8_t *data);
+OPENSSL_EXPORT void BF_encrypt(uint32_t *data, const BF_KEY *key);
+OPENSSL_EXPORT void BF_decrypt(uint32_t *data, const BF_KEY *key);
+
+OPENSSL_EXPORT void BF_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                   const BF_KEY *key, int enc);
+OPENSSL_EXPORT void BF_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                   size_t length, const BF_KEY *schedule,
+                                   uint8_t *ivec, int enc);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_BLOWFISH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h
new file mode 100644
index 0000000..e0d6b5c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h	
@@ -0,0 +1,1056 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_BN_H
+#define OPENSSL_HEADER_BN_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/thread.h>
+
+#include <inttypes.h>  // for PRIu64 and friends
+#include <stdio.h>  // for FILE*
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BN provides support for working with arbitrary sized integers. For example,
+// although the largest integer supported by the compiler might be 64 bits, BN
+// will allow you to work with numbers until you run out of memory.
+
+
+// BN_ULONG is the native word size when working with big integers.
+//
+// Note: on some platforms, inttypes.h does not define print format macros in
+// C++ unless |__STDC_FORMAT_MACROS| defined. This is due to text in C99 which
+// was never adopted in any C++ standard and explicitly overruled in C++11. As
+// this is a public header, bn.h does not define |__STDC_FORMAT_MACROS| itself.
+// Projects which use |BN_*_FMT*| with outdated C headers may need to define it
+// externally.
+#if defined(OPENSSL_64_BIT)
+#define BN_ULONG uint64_t
+#define BN_BITS2 64
+#define BN_DEC_FMT1 "%" PRIu64
+#define BN_DEC_FMT2 "%019" PRIu64
+#define BN_HEX_FMT1 "%" PRIx64
+#define BN_HEX_FMT2 "%016" PRIx64
+#elif defined(OPENSSL_32_BIT)
+#define BN_ULONG uint32_t
+#define BN_BITS2 32
+#define BN_DEC_FMT1 "%" PRIu32
+#define BN_DEC_FMT2 "%09" PRIu32
+#define BN_HEX_FMT1 "%" PRIx32
+#define BN_HEX_FMT2 "%08" PRIx32
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+
+// Allocation and freeing.
+
+// BN_new creates a new, allocated BIGNUM and initialises it.
+OPENSSL_EXPORT BIGNUM *BN_new(void);
+
+// BN_init initialises a stack allocated |BIGNUM|.
+OPENSSL_EXPORT void BN_init(BIGNUM *bn);
+
+// BN_free frees the data referenced by |bn| and, if |bn| was originally
+// allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_free(BIGNUM *bn);
+
+// BN_clear_free erases and frees the data referenced by |bn| and, if |bn| was
+// originally allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_clear_free(BIGNUM *bn);
+
+// BN_dup allocates a new BIGNUM and sets it equal to |src|. It returns the
+// allocated BIGNUM on success or NULL otherwise.
+OPENSSL_EXPORT BIGNUM *BN_dup(const BIGNUM *src);
+
+// BN_copy sets |dest| equal to |src| and returns |dest| or NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src);
+
+// BN_clear sets |bn| to zero and erases the old data.
+OPENSSL_EXPORT void BN_clear(BIGNUM *bn);
+
+// BN_value_one returns a static BIGNUM with value 1.
+OPENSSL_EXPORT const BIGNUM *BN_value_one(void);
+
+
+// Basic functions.
+
+// BN_num_bits returns the minimum number of bits needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bits(const BIGNUM *bn);
+
+// BN_num_bytes returns the minimum number of bytes needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bytes(const BIGNUM *bn);
+
+// BN_zero sets |bn| to zero.
+OPENSSL_EXPORT void BN_zero(BIGNUM *bn);
+
+// BN_one sets |bn| to one. It returns one on success or zero on allocation
+// failure.
+OPENSSL_EXPORT int BN_one(BIGNUM *bn);
+
+// BN_set_word sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_word(BIGNUM *bn, BN_ULONG value);
+
+// BN_set_u64 sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_u64(BIGNUM *bn, uint64_t value);
+
+// BN_set_negative sets the sign of |bn|.
+OPENSSL_EXPORT void BN_set_negative(BIGNUM *bn, int sign);
+
+// BN_is_negative returns one if |bn| is negative and zero otherwise.
+OPENSSL_EXPORT int BN_is_negative(const BIGNUM *bn);
+
+
+// Conversion functions.
+
+// BN_bin2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a big-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_bin2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2bin serialises the absolute value of |in| to |out| as a big-endian
+// integer, which must have |BN_num_bytes| of space available. It returns the
+// number of bytes written. Note this function leaks the magnitude of |in|. If
+// |in| is secret, use |BN_bn2bin_padded| instead.
+OPENSSL_EXPORT size_t BN_bn2bin(const BIGNUM *in, uint8_t *out);
+
+// BN_le2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a little-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_le2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2le_padded serialises the absolute value of |in| to |out| as a
+// little-endian integer, which must have |len| of space available, padding
+// out the remainder of out with zeros. If |len| is smaller than |BN_num_bytes|,
+// the function fails and returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2le_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2bin_padded serialises the absolute value of |in| to |out| as a
+// big-endian integer. The integer is padded with leading zeros up to size
+// |len|. If |len| is smaller than |BN_num_bytes|, the function fails and
+// returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2bin_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2cbb_padded behaves like |BN_bn2bin_padded| but writes to a |CBB|.
+OPENSSL_EXPORT int BN_bn2cbb_padded(CBB *out, size_t len, const BIGNUM *in);
+
+// BN_bn2hex returns an allocated string that contains a NUL-terminated, hex
+// representation of |bn|. If |bn| is negative, the first char in the resulting
+// string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2hex(const BIGNUM *bn);
+
+// BN_hex2bn parses the leading hex number from |in|, which may be proceeded by
+// a '-' to indicate a negative number and may contain trailing, non-hex data.
+// If |outp| is not NULL, it constructs a BIGNUM equal to the hex number and
+// stores it in |*outp|. If |*outp| is NULL then it allocates a new BIGNUM and
+// updates |*outp|. It returns the number of bytes of |in| processed or zero on
+// error.
+OPENSSL_EXPORT int BN_hex2bn(BIGNUM **outp, const char *in);
+
+// BN_bn2dec returns an allocated string that contains a NUL-terminated,
+// decimal representation of |bn|. If |bn| is negative, the first char in the
+// resulting string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2dec(const BIGNUM *a);
+
+// BN_dec2bn parses the leading decimal number from |in|, which may be
+// proceeded by a '-' to indicate a negative number and may contain trailing,
+// non-decimal data. If |outp| is not NULL, it constructs a BIGNUM equal to the
+// decimal number and stores it in |*outp|. If |*outp| is NULL then it
+// allocates a new BIGNUM and updates |*outp|. It returns the number of bytes
+// of |in| processed or zero on error.
+OPENSSL_EXPORT int BN_dec2bn(BIGNUM **outp, const char *in);
+
+// BN_asc2bn acts like |BN_dec2bn| or |BN_hex2bn| depending on whether |in|
+// begins with "0X" or "0x" (indicating hex) or not (indicating decimal). A
+// leading '-' is still permitted and comes before the optional 0X/0x. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_asc2bn(BIGNUM **outp, const char *in);
+
+// BN_print writes a hex encoding of |a| to |bio|. It returns one on success
+// and zero on error.
+OPENSSL_EXPORT int BN_print(BIO *bio, const BIGNUM *a);
+
+// BN_print_fp acts like |BIO_print|, but wraps |fp| in a |BIO| first.
+OPENSSL_EXPORT int BN_print_fp(FILE *fp, const BIGNUM *a);
+
+// BN_get_word returns the absolute value of |bn| as a single word. If |bn| is
+// too large to be represented as a single word, the maximum possible value
+// will be returned.
+OPENSSL_EXPORT BN_ULONG BN_get_word(const BIGNUM *bn);
+
+// BN_get_u64 sets |*out| to the absolute value of |bn| as a |uint64_t| and
+// returns one. If |bn| is too large to be represented as a |uint64_t|, it
+// returns zero.
+OPENSSL_EXPORT int BN_get_u64(const BIGNUM *bn, uint64_t *out);
+
+
+// ASN.1 functions.
+
+// BN_parse_asn1_unsigned parses a non-negative DER INTEGER from |cbs| writes
+// the result to |ret|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_parse_asn1_unsigned(CBS *cbs, BIGNUM *ret);
+
+// BN_marshal_asn1 marshals |bn| as a non-negative DER INTEGER and appends the
+// result to |cbb|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_marshal_asn1(CBB *cbb, const BIGNUM *bn);
+
+
+// BIGNUM pools.
+//
+// Certain BIGNUM operations need to use many temporary variables and
+// allocating and freeing them can be quite slow. Thus such operations typically
+// take a |BN_CTX| parameter, which contains a pool of |BIGNUMs|. The |ctx|
+// argument to a public function may be NULL, in which case a local |BN_CTX|
+// will be created just for the lifetime of that call.
+//
+// A function must call |BN_CTX_start| first. Then, |BN_CTX_get| may be called
+// repeatedly to obtain temporary |BIGNUM|s. All |BN_CTX_get| calls must be made
+// before calling any other functions that use the |ctx| as an argument.
+//
+// Finally, |BN_CTX_end| must be called before returning from the function.
+// When |BN_CTX_end| is called, the |BIGNUM| pointers obtained from
+// |BN_CTX_get| become invalid.
+
+// BN_CTX_new returns a new, empty BN_CTX or NULL on allocation failure.
+OPENSSL_EXPORT BN_CTX *BN_CTX_new(void);
+
+// BN_CTX_free frees all BIGNUMs contained in |ctx| and then frees |ctx|
+// itself.
+OPENSSL_EXPORT void BN_CTX_free(BN_CTX *ctx);
+
+// BN_CTX_start "pushes" a new entry onto the |ctx| stack and allows future
+// calls to |BN_CTX_get|.
+OPENSSL_EXPORT void BN_CTX_start(BN_CTX *ctx);
+
+// BN_CTX_get returns a new |BIGNUM|, or NULL on allocation failure. Once
+// |BN_CTX_get| has returned NULL, all future calls will also return NULL until
+// |BN_CTX_end| is called.
+OPENSSL_EXPORT BIGNUM *BN_CTX_get(BN_CTX *ctx);
+
+// BN_CTX_end invalidates all |BIGNUM|s returned from |BN_CTX_get| since the
+// matching |BN_CTX_start| call.
+OPENSSL_EXPORT void BN_CTX_end(BN_CTX *ctx);
+
+
+// Simple arithmetic
+
+// BN_add sets |r| = |a| + |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_uadd sets |r| = |a| + |b|, where |a| and |b| are non-negative and |r| may
+// be the same pointer as either |a| or |b|. It returns one on success and zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_add_word adds |w| to |a|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_add_word(BIGNUM *a, BN_ULONG w);
+
+// BN_sub sets |r| = |a| - |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_usub sets |r| = |a| - |b|, where |a| and |b| are non-negative integers,
+// |b| < |a| and |r| may be the same pointer as either |a| or |b|. It returns
+// one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_sub_word subtracts |w| from |a|. It returns one on success and zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_sub_word(BIGNUM *a, BN_ULONG w);
+
+// BN_mul sets |r| = |a| * |b|, where |r| may be the same pointer as |a| or
+// |b|. Returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mul_word sets |bn| = |bn| * |w|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_mul_word(BIGNUM *bn, BN_ULONG w);
+
+// BN_sqr sets |r| = |a|^2 (i.e. squares), where |r| may be the same pointer as
+// |a|. Returns one on success and zero otherwise. This is more efficient than
+// BN_mul(r, a, a, ctx).
+OPENSSL_EXPORT int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+
+// BN_div divides |numerator| by |divisor| and places the result in |quotient|
+// and the remainder in |rem|. Either of |quotient| or |rem| may be NULL, in
+// which case the respective value is not returned. The result is rounded
+// towards zero; thus if |numerator| is negative, the remainder will be zero or
+// negative. It returns one on success or zero on error.
+OPENSSL_EXPORT int BN_div(BIGNUM *quotient, BIGNUM *rem,
+                          const BIGNUM *numerator, const BIGNUM *divisor,
+                          BN_CTX *ctx);
+
+// BN_div_word sets |numerator| = |numerator|/|divisor| and returns the
+// remainder or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_div_word(BIGNUM *numerator, BN_ULONG divisor);
+
+// BN_sqrt sets |*out_sqrt| (which may be the same |BIGNUM| as |in|) to the
+// square root of |in|, using |ctx|. It returns one on success or zero on
+// error. Negative numbers and non-square numbers will result in an error with
+// appropriate errors on the error queue.
+OPENSSL_EXPORT int BN_sqrt(BIGNUM *out_sqrt, const BIGNUM *in, BN_CTX *ctx);
+
+
+// Comparison functions
+
+// BN_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int BN_cmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_cmp_word is like |BN_cmp| except it takes its second argument as a
+// |BN_ULONG| instead of a |BIGNUM|.
+OPENSSL_EXPORT int BN_cmp_word(const BIGNUM *a, BN_ULONG b);
+
+// BN_ucmp returns a value less than, equal to or greater than zero if the
+// absolute value of |a| is less than, equal to or greater than the absolute
+// value of |b|, respectively.
+OPENSSL_EXPORT int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_equal_consttime returns one if |a| is equal to |b|, and zero otherwise.
+// It takes an amount of time dependent on the sizes of |a| and |b|, but
+// independent of the contents (including the signs) of |a| and |b|.
+OPENSSL_EXPORT int BN_equal_consttime(const BIGNUM *a, const BIGNUM *b);
+
+// BN_abs_is_word returns one if the absolute value of |bn| equals |w| and zero
+// otherwise.
+OPENSSL_EXPORT int BN_abs_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_zero returns one if |bn| is zero and zero otherwise.
+OPENSSL_EXPORT int BN_is_zero(const BIGNUM *bn);
+
+// BN_is_one returns one if |bn| equals one and zero otherwise.
+OPENSSL_EXPORT int BN_is_one(const BIGNUM *bn);
+
+// BN_is_word returns one if |bn| is exactly |w| and zero otherwise.
+OPENSSL_EXPORT int BN_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_odd returns one if |bn| is odd and zero otherwise.
+OPENSSL_EXPORT int BN_is_odd(const BIGNUM *bn);
+
+// BN_is_pow2 returns 1 if |a| is a power of two, and 0 otherwise.
+OPENSSL_EXPORT int BN_is_pow2(const BIGNUM *a);
+
+
+// Bitwise operations.
+
+// BN_lshift sets |r| equal to |a| << n. The |a| and |r| arguments may be the
+// same |BIGNUM|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_lshift1 sets |r| equal to |a| << 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_rshift sets |r| equal to |a| >> n, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_rshift1 sets |r| equal to |a| >> 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_set_bit sets the |n|th, least-significant bit in |a|. For example, if |a|
+// is 2 then setting bit zero will make it 3. It returns one on success or zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_set_bit(BIGNUM *a, int n);
+
+// BN_clear_bit clears the |n|th, least-significant bit in |a|. For example, if
+// |a| is 3, clearing bit zero will make it two. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int BN_clear_bit(BIGNUM *a, int n);
+
+// BN_is_bit_set returns one if the |n|th least-significant bit in |a| exists
+// and is set. Otherwise, it returns zero.
+OPENSSL_EXPORT int BN_is_bit_set(const BIGNUM *a, int n);
+
+// BN_mask_bits truncates |a| so that it is only |n| bits long. It returns one
+// on success or zero if |n| is negative.
+//
+// This differs from OpenSSL which additionally returns zero if |a|'s word
+// length is less than or equal to |n|, rounded down to a number of words. Note
+// word size is platform-dependent, so this behavior is also difficult to rely
+// on in OpenSSL and not very useful.
+OPENSSL_EXPORT int BN_mask_bits(BIGNUM *a, int n);
+
+// BN_count_low_zero_bits returns the number of low-order zero bits in |bn|, or
+// the number of factors of two which divide it. It returns zero if |bn| is
+// zero.
+OPENSSL_EXPORT int BN_count_low_zero_bits(const BIGNUM *bn);
+
+
+// Modulo arithmetic.
+
+// BN_mod_word returns |a| mod |w| or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w);
+
+// BN_mod_pow2 sets |r| = |a| mod 2^|e|. It returns 1 on success and
+// 0 on error.
+OPENSSL_EXPORT int BN_mod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_nnmod_pow2 sets |r| = |a| mod 2^|e| where |r| is always positive.
+// It returns 1 on success and 0 on error.
+OPENSSL_EXPORT int BN_nnmod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_mod is a helper macro that calls |BN_div| and discards the quotient.
+#define BN_mod(rem, numerator, divisor, ctx) \
+  BN_div(NULL, (rem), (numerator), (divisor), (ctx))
+
+// BN_nnmod is a non-negative modulo function. It acts like |BN_mod|, but 0 <=
+// |rem| < |divisor| is always true. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BN_nnmod(BIGNUM *rem, const BIGNUM *numerator,
+                            const BIGNUM *divisor, BN_CTX *ctx);
+
+// BN_mod_add sets |r| = |a| + |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_add_quick acts like |BN_mod_add| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_sub sets |r| = |a| - |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sub_quick acts like |BN_mod_sub| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_mul sets |r| = |a|*|b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sqr sets |r| = |a|^2 mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                              BN_CTX *ctx);
+
+// BN_mod_lshift sets |r| = (|a| << n) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n,
+                                 const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_lshift_quick acts like |BN_mod_lshift| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n,
+                                       const BIGNUM *m);
+
+// BN_mod_lshift1 sets |r| = (|a| << 1) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                                  BN_CTX *ctx);
+
+// BN_mod_lshift1_quick acts like |BN_mod_lshift1| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a,
+                                        const BIGNUM *m);
+
+// BN_mod_sqrt returns a newly-allocated |BIGNUM|, r, such that
+// r^2 == a (mod p). |p| must be a prime. It returns NULL on error or if |a| is
+// not a square mod |p|. In the latter case, it will add |BN_R_NOT_A_SQUARE| to
+// the error queue.
+OPENSSL_EXPORT BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p,
+                                   BN_CTX *ctx);
+
+
+// Random and prime number generation.
+
+// The following are values for the |top| parameter of |BN_rand|.
+#define BN_RAND_TOP_ANY    (-1)
+#define BN_RAND_TOP_ONE     0
+#define BN_RAND_TOP_TWO     1
+
+// The following are values for the |bottom| parameter of |BN_rand|.
+#define BN_RAND_BOTTOM_ANY  0
+#define BN_RAND_BOTTOM_ODD  1
+
+// BN_rand sets |rnd| to a random number of length |bits|. It returns one on
+// success and zero otherwise.
+//
+// |top| must be one of the |BN_RAND_TOP_*| values. If |BN_RAND_TOP_ONE|, the
+// most-significant bit, if any, will be set. If |BN_RAND_TOP_TWO|, the two
+// most significant bits, if any, will be set. If |BN_RAND_TOP_ANY|, no extra
+// action will be taken and |BN_num_bits(rnd)| may not equal |bits| if the most
+// significant bits randomly ended up as zeros.
+//
+// |bottom| must be one of the |BN_RAND_BOTTOM_*| values. If
+// |BN_RAND_BOTTOM_ODD|, the least-significant bit, if any, will be set. If
+// |BN_RAND_BOTTOM_ANY|, no extra action will be taken.
+OPENSSL_EXPORT int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_pseudo_rand is an alias for |BN_rand|.
+OPENSSL_EXPORT int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_rand_range is equivalent to |BN_rand_range_ex| with |min_inclusive| set
+// to zero and |max_exclusive| set to |range|.
+OPENSSL_EXPORT int BN_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+// BN_rand_range_ex sets |rnd| to a random value in
+// [min_inclusive..max_exclusive). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_rand_range_ex(BIGNUM *r, BN_ULONG min_inclusive,
+                                    const BIGNUM *max_exclusive);
+
+// BN_pseudo_rand_range is an alias for BN_rand_range.
+OPENSSL_EXPORT int BN_pseudo_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+#define BN_GENCB_GENERATED 0
+#define BN_GENCB_PRIME_TEST 1
+
+// bn_gencb_st, or |BN_GENCB|, holds a callback function that is used by
+// generation functions that can take a very long time to complete. Use
+// |BN_GENCB_set| to initialise a |BN_GENCB| structure.
+//
+// The callback receives the address of that |BN_GENCB| structure as its last
+// argument and the user is free to put an arbitrary pointer in |arg|. The other
+// arguments are set as follows:
+//   event=BN_GENCB_GENERATED, n=i:   after generating the i'th possible prime
+//                                    number.
+//   event=BN_GENCB_PRIME_TEST, n=-1: when finished trial division primality
+//                                    checks.
+//   event=BN_GENCB_PRIME_TEST, n=i:  when the i'th primality test has finished.
+//
+// The callback can return zero to abort the generation progress or one to
+// allow it to continue.
+//
+// When other code needs to call a BN generation function it will often take a
+// BN_GENCB argument and may call the function with other argument values.
+struct bn_gencb_st {
+  void *arg;        // callback-specific data
+  int (*callback)(int event, int n, struct bn_gencb_st *);
+};
+
+// BN_GENCB_set configures |callback| to call |f| and sets |callout->arg| to
+// |arg|.
+OPENSSL_EXPORT void BN_GENCB_set(BN_GENCB *callback,
+                                 int (*f)(int event, int n, BN_GENCB *),
+                                 void *arg);
+
+// BN_GENCB_call calls |callback|, if not NULL, and returns the return value of
+// the callback, or 1 if |callback| is NULL.
+OPENSSL_EXPORT int BN_GENCB_call(BN_GENCB *callback, int event, int n);
+
+// BN_generate_prime_ex sets |ret| to a prime number of |bits| length. If safe
+// is non-zero then the prime will be such that (ret-1)/2 is also a prime.
+// (This is needed for Diffie-Hellman groups to ensure that the only subgroups
+// are of size 2 and (p-1)/2.).
+//
+// If |add| is not NULL, the prime will fulfill the condition |ret| % |add| ==
+// |rem| in order to suit a given generator. (If |rem| is NULL then |ret| %
+// |add| == 1.)
+//
+// If |cb| is not NULL, it will be called during processing to give an
+// indication of progress. See the comments for |BN_GENCB|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe,
+                                        const BIGNUM *add, const BIGNUM *rem,
+                                        BN_GENCB *cb);
+
+// BN_prime_checks_for_validation can be used as the |checks| argument to the
+// primarily testing functions when validating an externally-supplied candidate
+// prime. It gives a false positive rate of at most 2^{-128}. (The worst case
+// false positive rate for a single iteration is 1/4, so we perform 32
+// iterations.)
+#define BN_prime_checks_for_validation 32
+
+// BN_prime_checks_for_generation can be used as the |checks| argument to the
+// primality testing functions when generating random primes. It gives a false
+// positive rate at most the security level of the corresponding RSA key size.
+//
+// Note this value only performs enough checks if the candidate prime was
+// selected randomly. If validating an externally-supplied candidate, especially
+// one that may be selected adversarially, use |BN_prime_checks_for_validation|
+// instead.
+#define BN_prime_checks_for_generation 0
+
+// bn_primality_result_t enumerates the outcomes of primality-testing.
+enum bn_primality_result_t {
+  bn_probably_prime,
+  bn_composite,
+  bn_non_prime_power_composite,
+};
+
+// BN_enhanced_miller_rabin_primality_test tests whether |w| is probably a prime
+// number using the Enhanced Miller-Rabin Test (FIPS 186-4 C.3.2) with
+// |checks| iterations and returns the result in |out_result|. Enhanced
+// Miller-Rabin tests primality for odd integers greater than 3, returning
+// |bn_probably_prime| if the number is probably prime,
+// |bn_non_prime_power_composite| if the number is a composite that is not the
+// power of a single prime, and |bn_composite| otherwise. It returns one on
+// success and zero on failure. If |cb| is not NULL, then it is called during
+// each iteration of the primality test.
+//
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+OPENSSL_EXPORT int BN_enhanced_miller_rabin_primality_test(
+    enum bn_primality_result_t *out_result, const BIGNUM *w, int checks,
+    BN_CTX *ctx, BN_GENCB *cb);
+
+// BN_primality_test sets |*is_probably_prime| to one if |candidate| is
+// probably a prime number by the Miller-Rabin test or zero if it's certainly
+// not.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning a false positive is at most 2^{2*checks}. See
+// |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// The function returns one on success and zero on error.
+OPENSSL_EXPORT int BN_primality_test(int *is_probably_prime,
+                                     const BIGNUM *candidate, int checks,
+                                     BN_CTX *ctx, int do_trial_division,
+                                     BN_GENCB *cb);
+
+// BN_is_prime_fasttest_ex returns one if |candidate| is probably a prime
+// number by the Miller-Rabin test, zero if it's certainly not and -1 on error.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning one when |candidate| is composite is at most 2^{2*checks}.
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// WARNING: deprecated. Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_fasttest_ex(const BIGNUM *candidate, int checks,
+                                           BN_CTX *ctx, int do_trial_division,
+                                           BN_GENCB *cb);
+
+// BN_is_prime_ex acts the same as |BN_is_prime_fasttest_ex| with
+// |do_trial_division| set to zero.
+//
+// WARNING: deprecated: Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_ex(const BIGNUM *candidate, int checks,
+                                  BN_CTX *ctx, BN_GENCB *cb);
+
+
+// Number theory functions
+
+// BN_gcd sets |r| = gcd(|a|, |b|). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_gcd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mod_inverse sets |out| equal to |a|^-1, mod |n|. If |out| is NULL, a
+// fresh BIGNUM is allocated. It returns the result or NULL on error.
+//
+// If |n| is even then the operation is performed using an algorithm that avoids
+// some branches but which isn't constant-time. This function shouldn't be used
+// for secret values; use |BN_mod_inverse_blinded| instead. Or, if |n| is
+// guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem.
+OPENSSL_EXPORT BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a,
+                                      const BIGNUM *n, BN_CTX *ctx);
+
+// BN_mod_inverse_blinded sets |out| equal to |a|^-1, mod |n|, where |n| is the
+// Montgomery modulus for |mont|. |a| must be non-negative and must be less
+// than |n|. |n| must be greater than 1. |a| is blinded (masked by a random
+// value) to protect it against side-channel attacks. On failure, if the failure
+// was caused by |a| having no inverse mod |n| then |*out_no_inverse| will be
+// set to one; otherwise it will be set to zero.
+//
+// Note this function may incorrectly report |a| has no inverse if the random
+// blinding value has no inverse. It should only be used when |n| has few
+// non-invertible elements, such as an RSA modulus.
+int BN_mod_inverse_blinded(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                           const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_inverse_odd sets |out| equal to |a|^-1, mod |n|. |a| must be
+// non-negative and must be less than |n|. |n| must be odd. This function
+// shouldn't be used for secret values; use |BN_mod_inverse_blinded| instead.
+// Or, if |n| is guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem. It returns one on success or zero on
+// failure. On failure, if the failure was caused by |a| having no inverse mod
+// |n| then |*out_no_inverse| will be set to one; otherwise it will be set to
+// zero.
+int BN_mod_inverse_odd(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                       const BIGNUM *n, BN_CTX *ctx);
+
+
+// Montgomery arithmetic.
+
+// BN_MONT_CTX contains the precomputed values needed to work in a specific
+// Montgomery domain.
+
+// BN_MONT_CTX_new_for_modulus returns a fresh |BN_MONT_CTX| given the modulus,
+// |mod| or NULL on error. Note this function assumes |mod| is public.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_for_modulus(const BIGNUM *mod,
+                                                        BN_CTX *ctx);
+
+// BN_MONT_CTX_new_consttime behaves like |BN_MONT_CTX_new_for_modulus| but
+// treats |mod| as secret.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_consttime(const BIGNUM *mod,
+                                                      BN_CTX *ctx);
+
+// BN_MONT_CTX_free frees memory associated with |mont|.
+OPENSSL_EXPORT void BN_MONT_CTX_free(BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_copy sets |to| equal to |from|. It returns |to| on success or
+// NULL on error.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,
+                                             const BN_MONT_CTX *from);
+
+// BN_MONT_CTX_set_locked takes |lock| and checks whether |*pmont| is NULL. If
+// so, it creates a new |BN_MONT_CTX| and sets the modulus for it to |mod|. It
+// then stores it as |*pmont|. It returns one on success and zero on error. Note
+// this function assumes |mod| is public.
+//
+// If |*pmont| is already non-NULL then it does nothing and returns one.
+int BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, CRYPTO_MUTEX *lock,
+                           const BIGNUM *mod, BN_CTX *bn_ctx);
+
+// BN_to_montgomery sets |ret| equal to |a| in the Montgomery domain. |a| is
+// assumed to be in the range [0, n), where |n| is the Montgomery modulus. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_to_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_from_montgomery sets |ret| equal to |a| * R^-1, i.e. translates values out
+// of the Montgomery domain. |a| is assumed to be in the range [0, n*R), where
+// |n| is the Montgomery modulus. Note n < R, so inputs in the range [0, n*n)
+// are valid. This function returns one on success or zero on error.
+OPENSSL_EXPORT int BN_from_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                      const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_mul_montgomery set |r| equal to |a| * |b|, in the Montgomery domain.
+// Both |a| and |b| must already be in the Montgomery domain (by
+// |BN_to_montgomery|). In particular, |a| and |b| are assumed to be in the
+// range [0, n), where |n| is the Montgomery modulus. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int BN_mod_mul_montgomery(BIGNUM *r, const BIGNUM *a,
+                                         const BIGNUM *b,
+                                         const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+
+// Exponentiation.
+
+// BN_exp sets |r| equal to |a|^{|p|}. It does so with a square-and-multiply
+// algorithm that leaks side-channel information. It returns one on success or
+// zero otherwise.
+OPENSSL_EXPORT int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                          BN_CTX *ctx);
+
+// BN_mod_exp sets |r| equal to |a|^{|p|} mod |m|. It does so with the best
+// algorithm for the values provided. It returns one on success or zero
+// otherwise. The |BN_mod_exp_mont_consttime| variant must be used if the
+// exponent is secret.
+OPENSSL_EXPORT int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_exp_mont behaves like |BN_mod_exp| but treats |a| as secret and
+// requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                                   const BIGNUM *m, BN_CTX *ctx,
+                                   const BN_MONT_CTX *mont);
+
+// BN_mod_exp_mont_consttime behaves like |BN_mod_exp| but treats |a|, |p|, and
+// |m| as secret and requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a,
+                                             const BIGNUM *p, const BIGNUM *m,
+                                             BN_CTX *ctx,
+                                             const BN_MONT_CTX *mont);
+
+
+// Deprecated functions
+
+// BN_bn2mpi serialises the value of |in| to |out|, using a format that consists
+// of the number's length in bytes represented as a 4-byte big-endian number,
+// and the number itself in big-endian format, where the most significant bit
+// signals a negative number. (The representation of numbers with the MSB set is
+// prefixed with null byte). |out| must have sufficient space available; to
+// find the needed amount of space, call the function with |out| set to NULL.
+OPENSSL_EXPORT size_t BN_bn2mpi(const BIGNUM *in, uint8_t *out);
+
+// BN_mpi2bn parses |len| bytes from |in| and returns the resulting value. The
+// bytes at |in| are expected to be in the format emitted by |BN_bn2mpi|.
+//
+// If |out| is NULL then a fresh |BIGNUM| is allocated and returned, otherwise
+// |out| is reused and returned. On error, NULL is returned and the error queue
+// is updated.
+OPENSSL_EXPORT BIGNUM *BN_mpi2bn(const uint8_t *in, size_t len, BIGNUM *out);
+
+// BN_mod_exp_mont_word is like |BN_mod_exp_mont| except that the base |a| is
+// given as a |BN_ULONG| instead of a |BIGNUM *|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp_mont_word(BIGNUM *r, BN_ULONG a, const BIGNUM *p,
+                                        const BIGNUM *m, BN_CTX *ctx,
+                                        const BN_MONT_CTX *mont);
+
+// BN_mod_exp2_mont calculates (a1^p1) * (a2^p2) mod m. It returns 1 on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp2_mont(BIGNUM *r, const BIGNUM *a1,
+                                    const BIGNUM *p1, const BIGNUM *a2,
+                                    const BIGNUM *p2, const BIGNUM *m,
+                                    BN_CTX *ctx, const BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_new returns a fresh |BN_MONT_CTX| or NULL on allocation failure.
+// Use |BN_MONT_CTX_new_for_modulus| instead.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new(void);
+
+// BN_MONT_CTX_set sets up a Montgomery context given the modulus, |mod|. It
+// returns one on success and zero on error. Use |BN_MONT_CTX_new_for_modulus|
+// instead.
+OPENSSL_EXPORT int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod,
+                                   BN_CTX *ctx);
+
+// BN_bn2binpad behaves like |BN_bn2bin_padded|, but it returns |len| on success
+// and -1 on error.
+//
+// Use |BN_bn2bin_padded| instead. It is |size_t|-clean.
+OPENSSL_EXPORT int BN_bn2binpad(const BIGNUM *in, uint8_t *out, int len);
+
+// BN_prime_checks is a deprecated alias for |BN_prime_checks_for_validation|.
+// Use |BN_prime_checks_for_generation| or |BN_prime_checks_for_validation|
+// instead. (This defaults to the |_for_validation| value in order to be
+// conservative.)
+
+
+// Private functions
+
+struct bignum_st {
+  // d is a pointer to an array of |width| |BN_BITS2|-bit chunks in
+  // little-endian order. This stores the absolute value of the number.
+  BN_ULONG *d;
+  // width is the number of elements of |d| which are valid. This value is not
+  // necessarily minimal; the most-significant words of |d| may be zero.
+  // |width| determines a potentially loose upper-bound on the absolute value
+  // of the |BIGNUM|.
+  //
+  // Functions taking |BIGNUM| inputs must compute the same answer for all
+  // possible widths. |bn_minimal_width|, |bn_set_minimal_width|, and other
+  // helpers may be used to recover the minimal width, provided it is not
+  // secret. If it is secret, use a different algorithm. Functions may output
+  // minimal or non-minimal |BIGNUM|s depending on secrecy requirements, but
+  // those which cause widths to unboundedly grow beyond the minimal value
+  // should be documented such.
+  //
+  // Note this is different from historical |BIGNUM| semantics.
+  int width;
+  // dmax is number of elements of |d| which are allocated.
+  int dmax;
+  // neg is one if the number if negative and zero otherwise.
+  int neg;
+  // flags is a bitmask of |BN_FLG_*| values
+  int flags;
+};
+
+struct bn_mont_ctx_st {
+  // RR is R^2, reduced modulo |N|. It is used to convert to Montgomery form. It
+  // is guaranteed to have the same width as |N|.
+  BIGNUM RR;
+  // N is the modulus. It is always stored in minimal form, so |N.width|
+  // determines R.
+  BIGNUM N;
+  BN_ULONG n0[2];  // least significant words of (R*Ri-1)/N
+};
+
+OPENSSL_EXPORT unsigned BN_num_bits_word(BN_ULONG l);
+
+#define BN_FLG_MALLOCED 0x01
+#define BN_FLG_STATIC_DATA 0x02
+// |BN_FLG_CONSTTIME| has been removed and intentionally omitted so code relying
+// on it will not compile. Consumers outside BoringSSL should use the
+// higher-level cryptographic algorithms exposed by other modules. Consumers
+// within the library should call the appropriate timing-sensitive algorithm
+// directly.
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIGNUM, BN_free)
+BORINGSSL_MAKE_DELETER(BN_CTX, BN_CTX_free)
+BORINGSSL_MAKE_DELETER(BN_MONT_CTX, BN_MONT_CTX_free)
+
+class BN_CTXScope {
+ public:
+  BN_CTXScope(BN_CTX *ctx) : ctx_(ctx) { BN_CTX_start(ctx_); }
+  ~BN_CTXScope() { BN_CTX_end(ctx_); }
+
+ private:
+  BN_CTX *ctx_;
+
+  BN_CTXScope(BN_CTXScope &) = delete;
+  BN_CTXScope &operator=(BN_CTXScope &) = delete;
+};
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define BN_R_ARG2_LT_ARG3 100
+#define BN_R_BAD_RECIPROCAL 101
+#define BN_R_BIGNUM_TOO_LONG 102
+#define BN_R_BITS_TOO_SMALL 103
+#define BN_R_CALLED_WITH_EVEN_MODULUS 104
+#define BN_R_DIV_BY_ZERO 105
+#define BN_R_EXPAND_ON_STATIC_BIGNUM_DATA 106
+#define BN_R_INPUT_NOT_REDUCED 107
+#define BN_R_INVALID_RANGE 108
+#define BN_R_NEGATIVE_NUMBER 109
+#define BN_R_NOT_A_SQUARE 110
+#define BN_R_NOT_INITIALIZED 111
+#define BN_R_NO_INVERSE 112
+#define BN_R_PRIVATE_KEY_TOO_LARGE 113
+#define BN_R_P_IS_NOT_PRIME 114
+#define BN_R_TOO_MANY_ITERATIONS 115
+#define BN_R_TOO_MANY_TEMPORARY_VARIABLES 116
+#define BN_R_BAD_ENCODING 117
+#define BN_R_ENCODE_ERROR 118
+#define BN_R_INVALID_INPUT 119
+
+#endif  // OPENSSL_HEADER_BN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.back
new file mode 100644
index 0000000..5cd2563
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.back	
@@ -0,0 +1,1056 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_BN_H
+#define OPENSSL_HEADER_BN_H
+
+#include <openssl/base.h>
+#include <openssl/thread.h>
+
+#include <inttypes.h>  // for PRIu64 and friends
+#include <stdio.h>  // for FILE*
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BN provides support for working with arbitrary sized integers. For example,
+// although the largest integer supported by the compiler might be 64 bits, BN
+// will allow you to work with numbers until you run out of memory.
+
+
+// BN_ULONG is the native word size when working with big integers.
+//
+// Note: on some platforms, inttypes.h does not define print format macros in
+// C++ unless |__STDC_FORMAT_MACROS| defined. This is due to text in C99 which
+// was never adopted in any C++ standard and explicitly overruled in C++11. As
+// this is a public header, bn.h does not define |__STDC_FORMAT_MACROS| itself.
+// Projects which use |BN_*_FMT*| with outdated C headers may need to define it
+// externally.
+#if defined(OPENSSL_64_BIT)
+#define BN_ULONG uint64_t
+#define BN_BITS2 64
+#define BN_DEC_FMT1 "%" PRIu64
+#define BN_DEC_FMT2 "%019" PRIu64
+#define BN_HEX_FMT1 "%" PRIx64
+#define BN_HEX_FMT2 "%016" PRIx64
+#elif defined(OPENSSL_32_BIT)
+#define BN_ULONG uint32_t
+#define BN_BITS2 32
+#define BN_DEC_FMT1 "%" PRIu32
+#define BN_DEC_FMT2 "%09" PRIu32
+#define BN_HEX_FMT1 "%" PRIx32
+#define BN_HEX_FMT2 "%08" PRIx32
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+
+// Allocation and freeing.
+
+// BN_new creates a new, allocated BIGNUM and initialises it.
+OPENSSL_EXPORT BIGNUM *BN_new(void);
+
+// BN_init initialises a stack allocated |BIGNUM|.
+OPENSSL_EXPORT void BN_init(BIGNUM *bn);
+
+// BN_free frees the data referenced by |bn| and, if |bn| was originally
+// allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_free(BIGNUM *bn);
+
+// BN_clear_free erases and frees the data referenced by |bn| and, if |bn| was
+// originally allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_clear_free(BIGNUM *bn);
+
+// BN_dup allocates a new BIGNUM and sets it equal to |src|. It returns the
+// allocated BIGNUM on success or NULL otherwise.
+OPENSSL_EXPORT BIGNUM *BN_dup(const BIGNUM *src);
+
+// BN_copy sets |dest| equal to |src| and returns |dest| or NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src);
+
+// BN_clear sets |bn| to zero and erases the old data.
+OPENSSL_EXPORT void BN_clear(BIGNUM *bn);
+
+// BN_value_one returns a static BIGNUM with value 1.
+OPENSSL_EXPORT const BIGNUM *BN_value_one(void);
+
+
+// Basic functions.
+
+// BN_num_bits returns the minimum number of bits needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bits(const BIGNUM *bn);
+
+// BN_num_bytes returns the minimum number of bytes needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bytes(const BIGNUM *bn);
+
+// BN_zero sets |bn| to zero.
+OPENSSL_EXPORT void BN_zero(BIGNUM *bn);
+
+// BN_one sets |bn| to one. It returns one on success or zero on allocation
+// failure.
+OPENSSL_EXPORT int BN_one(BIGNUM *bn);
+
+// BN_set_word sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_word(BIGNUM *bn, BN_ULONG value);
+
+// BN_set_u64 sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_u64(BIGNUM *bn, uint64_t value);
+
+// BN_set_negative sets the sign of |bn|.
+OPENSSL_EXPORT void BN_set_negative(BIGNUM *bn, int sign);
+
+// BN_is_negative returns one if |bn| is negative and zero otherwise.
+OPENSSL_EXPORT int BN_is_negative(const BIGNUM *bn);
+
+
+// Conversion functions.
+
+// BN_bin2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a big-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_bin2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2bin serialises the absolute value of |in| to |out| as a big-endian
+// integer, which must have |BN_num_bytes| of space available. It returns the
+// number of bytes written. Note this function leaks the magnitude of |in|. If
+// |in| is secret, use |BN_bn2bin_padded| instead.
+OPENSSL_EXPORT size_t BN_bn2bin(const BIGNUM *in, uint8_t *out);
+
+// BN_le2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a little-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_le2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2le_padded serialises the absolute value of |in| to |out| as a
+// little-endian integer, which must have |len| of space available, padding
+// out the remainder of out with zeros. If |len| is smaller than |BN_num_bytes|,
+// the function fails and returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2le_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2bin_padded serialises the absolute value of |in| to |out| as a
+// big-endian integer. The integer is padded with leading zeros up to size
+// |len|. If |len| is smaller than |BN_num_bytes|, the function fails and
+// returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2bin_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2cbb_padded behaves like |BN_bn2bin_padded| but writes to a |CBB|.
+OPENSSL_EXPORT int BN_bn2cbb_padded(CBB *out, size_t len, const BIGNUM *in);
+
+// BN_bn2hex returns an allocated string that contains a NUL-terminated, hex
+// representation of |bn|. If |bn| is negative, the first char in the resulting
+// string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2hex(const BIGNUM *bn);
+
+// BN_hex2bn parses the leading hex number from |in|, which may be proceeded by
+// a '-' to indicate a negative number and may contain trailing, non-hex data.
+// If |outp| is not NULL, it constructs a BIGNUM equal to the hex number and
+// stores it in |*outp|. If |*outp| is NULL then it allocates a new BIGNUM and
+// updates |*outp|. It returns the number of bytes of |in| processed or zero on
+// error.
+OPENSSL_EXPORT int BN_hex2bn(BIGNUM **outp, const char *in);
+
+// BN_bn2dec returns an allocated string that contains a NUL-terminated,
+// decimal representation of |bn|. If |bn| is negative, the first char in the
+// resulting string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2dec(const BIGNUM *a);
+
+// BN_dec2bn parses the leading decimal number from |in|, which may be
+// proceeded by a '-' to indicate a negative number and may contain trailing,
+// non-decimal data. If |outp| is not NULL, it constructs a BIGNUM equal to the
+// decimal number and stores it in |*outp|. If |*outp| is NULL then it
+// allocates a new BIGNUM and updates |*outp|. It returns the number of bytes
+// of |in| processed or zero on error.
+OPENSSL_EXPORT int BN_dec2bn(BIGNUM **outp, const char *in);
+
+// BN_asc2bn acts like |BN_dec2bn| or |BN_hex2bn| depending on whether |in|
+// begins with "0X" or "0x" (indicating hex) or not (indicating decimal). A
+// leading '-' is still permitted and comes before the optional 0X/0x. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_asc2bn(BIGNUM **outp, const char *in);
+
+// BN_print writes a hex encoding of |a| to |bio|. It returns one on success
+// and zero on error.
+OPENSSL_EXPORT int BN_print(BIO *bio, const BIGNUM *a);
+
+// BN_print_fp acts like |BIO_print|, but wraps |fp| in a |BIO| first.
+OPENSSL_EXPORT int BN_print_fp(FILE *fp, const BIGNUM *a);
+
+// BN_get_word returns the absolute value of |bn| as a single word. If |bn| is
+// too large to be represented as a single word, the maximum possible value
+// will be returned.
+OPENSSL_EXPORT BN_ULONG BN_get_word(const BIGNUM *bn);
+
+// BN_get_u64 sets |*out| to the absolute value of |bn| as a |uint64_t| and
+// returns one. If |bn| is too large to be represented as a |uint64_t|, it
+// returns zero.
+OPENSSL_EXPORT int BN_get_u64(const BIGNUM *bn, uint64_t *out);
+
+
+// ASN.1 functions.
+
+// BN_parse_asn1_unsigned parses a non-negative DER INTEGER from |cbs| writes
+// the result to |ret|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_parse_asn1_unsigned(CBS *cbs, BIGNUM *ret);
+
+// BN_marshal_asn1 marshals |bn| as a non-negative DER INTEGER and appends the
+// result to |cbb|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_marshal_asn1(CBB *cbb, const BIGNUM *bn);
+
+
+// BIGNUM pools.
+//
+// Certain BIGNUM operations need to use many temporary variables and
+// allocating and freeing them can be quite slow. Thus such operations typically
+// take a |BN_CTX| parameter, which contains a pool of |BIGNUMs|. The |ctx|
+// argument to a public function may be NULL, in which case a local |BN_CTX|
+// will be created just for the lifetime of that call.
+//
+// A function must call |BN_CTX_start| first. Then, |BN_CTX_get| may be called
+// repeatedly to obtain temporary |BIGNUM|s. All |BN_CTX_get| calls must be made
+// before calling any other functions that use the |ctx| as an argument.
+//
+// Finally, |BN_CTX_end| must be called before returning from the function.
+// When |BN_CTX_end| is called, the |BIGNUM| pointers obtained from
+// |BN_CTX_get| become invalid.
+
+// BN_CTX_new returns a new, empty BN_CTX or NULL on allocation failure.
+OPENSSL_EXPORT BN_CTX *BN_CTX_new(void);
+
+// BN_CTX_free frees all BIGNUMs contained in |ctx| and then frees |ctx|
+// itself.
+OPENSSL_EXPORT void BN_CTX_free(BN_CTX *ctx);
+
+// BN_CTX_start "pushes" a new entry onto the |ctx| stack and allows future
+// calls to |BN_CTX_get|.
+OPENSSL_EXPORT void BN_CTX_start(BN_CTX *ctx);
+
+// BN_CTX_get returns a new |BIGNUM|, or NULL on allocation failure. Once
+// |BN_CTX_get| has returned NULL, all future calls will also return NULL until
+// |BN_CTX_end| is called.
+OPENSSL_EXPORT BIGNUM *BN_CTX_get(BN_CTX *ctx);
+
+// BN_CTX_end invalidates all |BIGNUM|s returned from |BN_CTX_get| since the
+// matching |BN_CTX_start| call.
+OPENSSL_EXPORT void BN_CTX_end(BN_CTX *ctx);
+
+
+// Simple arithmetic
+
+// BN_add sets |r| = |a| + |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_uadd sets |r| = |a| + |b|, where |a| and |b| are non-negative and |r| may
+// be the same pointer as either |a| or |b|. It returns one on success and zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_add_word adds |w| to |a|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_add_word(BIGNUM *a, BN_ULONG w);
+
+// BN_sub sets |r| = |a| - |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_usub sets |r| = |a| - |b|, where |a| and |b| are non-negative integers,
+// |b| < |a| and |r| may be the same pointer as either |a| or |b|. It returns
+// one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_sub_word subtracts |w| from |a|. It returns one on success and zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_sub_word(BIGNUM *a, BN_ULONG w);
+
+// BN_mul sets |r| = |a| * |b|, where |r| may be the same pointer as |a| or
+// |b|. Returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mul_word sets |bn| = |bn| * |w|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_mul_word(BIGNUM *bn, BN_ULONG w);
+
+// BN_sqr sets |r| = |a|^2 (i.e. squares), where |r| may be the same pointer as
+// |a|. Returns one on success and zero otherwise. This is more efficient than
+// BN_mul(r, a, a, ctx).
+OPENSSL_EXPORT int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+
+// BN_div divides |numerator| by |divisor| and places the result in |quotient|
+// and the remainder in |rem|. Either of |quotient| or |rem| may be NULL, in
+// which case the respective value is not returned. The result is rounded
+// towards zero; thus if |numerator| is negative, the remainder will be zero or
+// negative. It returns one on success or zero on error.
+OPENSSL_EXPORT int BN_div(BIGNUM *quotient, BIGNUM *rem,
+                          const BIGNUM *numerator, const BIGNUM *divisor,
+                          BN_CTX *ctx);
+
+// BN_div_word sets |numerator| = |numerator|/|divisor| and returns the
+// remainder or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_div_word(BIGNUM *numerator, BN_ULONG divisor);
+
+// BN_sqrt sets |*out_sqrt| (which may be the same |BIGNUM| as |in|) to the
+// square root of |in|, using |ctx|. It returns one on success or zero on
+// error. Negative numbers and non-square numbers will result in an error with
+// appropriate errors on the error queue.
+OPENSSL_EXPORT int BN_sqrt(BIGNUM *out_sqrt, const BIGNUM *in, BN_CTX *ctx);
+
+
+// Comparison functions
+
+// BN_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int BN_cmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_cmp_word is like |BN_cmp| except it takes its second argument as a
+// |BN_ULONG| instead of a |BIGNUM|.
+OPENSSL_EXPORT int BN_cmp_word(const BIGNUM *a, BN_ULONG b);
+
+// BN_ucmp returns a value less than, equal to or greater than zero if the
+// absolute value of |a| is less than, equal to or greater than the absolute
+// value of |b|, respectively.
+OPENSSL_EXPORT int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_equal_consttime returns one if |a| is equal to |b|, and zero otherwise.
+// It takes an amount of time dependent on the sizes of |a| and |b|, but
+// independent of the contents (including the signs) of |a| and |b|.
+OPENSSL_EXPORT int BN_equal_consttime(const BIGNUM *a, const BIGNUM *b);
+
+// BN_abs_is_word returns one if the absolute value of |bn| equals |w| and zero
+// otherwise.
+OPENSSL_EXPORT int BN_abs_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_zero returns one if |bn| is zero and zero otherwise.
+OPENSSL_EXPORT int BN_is_zero(const BIGNUM *bn);
+
+// BN_is_one returns one if |bn| equals one and zero otherwise.
+OPENSSL_EXPORT int BN_is_one(const BIGNUM *bn);
+
+// BN_is_word returns one if |bn| is exactly |w| and zero otherwise.
+OPENSSL_EXPORT int BN_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_odd returns one if |bn| is odd and zero otherwise.
+OPENSSL_EXPORT int BN_is_odd(const BIGNUM *bn);
+
+// BN_is_pow2 returns 1 if |a| is a power of two, and 0 otherwise.
+OPENSSL_EXPORT int BN_is_pow2(const BIGNUM *a);
+
+
+// Bitwise operations.
+
+// BN_lshift sets |r| equal to |a| << n. The |a| and |r| arguments may be the
+// same |BIGNUM|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_lshift1 sets |r| equal to |a| << 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_rshift sets |r| equal to |a| >> n, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_rshift1 sets |r| equal to |a| >> 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_set_bit sets the |n|th, least-significant bit in |a|. For example, if |a|
+// is 2 then setting bit zero will make it 3. It returns one on success or zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_set_bit(BIGNUM *a, int n);
+
+// BN_clear_bit clears the |n|th, least-significant bit in |a|. For example, if
+// |a| is 3, clearing bit zero will make it two. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int BN_clear_bit(BIGNUM *a, int n);
+
+// BN_is_bit_set returns one if the |n|th least-significant bit in |a| exists
+// and is set. Otherwise, it returns zero.
+OPENSSL_EXPORT int BN_is_bit_set(const BIGNUM *a, int n);
+
+// BN_mask_bits truncates |a| so that it is only |n| bits long. It returns one
+// on success or zero if |n| is negative.
+//
+// This differs from OpenSSL which additionally returns zero if |a|'s word
+// length is less than or equal to |n|, rounded down to a number of words. Note
+// word size is platform-dependent, so this behavior is also difficult to rely
+// on in OpenSSL and not very useful.
+OPENSSL_EXPORT int BN_mask_bits(BIGNUM *a, int n);
+
+// BN_count_low_zero_bits returns the number of low-order zero bits in |bn|, or
+// the number of factors of two which divide it. It returns zero if |bn| is
+// zero.
+OPENSSL_EXPORT int BN_count_low_zero_bits(const BIGNUM *bn);
+
+
+// Modulo arithmetic.
+
+// BN_mod_word returns |a| mod |w| or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w);
+
+// BN_mod_pow2 sets |r| = |a| mod 2^|e|. It returns 1 on success and
+// 0 on error.
+OPENSSL_EXPORT int BN_mod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_nnmod_pow2 sets |r| = |a| mod 2^|e| where |r| is always positive.
+// It returns 1 on success and 0 on error.
+OPENSSL_EXPORT int BN_nnmod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_mod is a helper macro that calls |BN_div| and discards the quotient.
+#define BN_mod(rem, numerator, divisor, ctx) \
+  BN_div(NULL, (rem), (numerator), (divisor), (ctx))
+
+// BN_nnmod is a non-negative modulo function. It acts like |BN_mod|, but 0 <=
+// |rem| < |divisor| is always true. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BN_nnmod(BIGNUM *rem, const BIGNUM *numerator,
+                            const BIGNUM *divisor, BN_CTX *ctx);
+
+// BN_mod_add sets |r| = |a| + |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_add_quick acts like |BN_mod_add| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_sub sets |r| = |a| - |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sub_quick acts like |BN_mod_sub| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_mul sets |r| = |a|*|b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sqr sets |r| = |a|^2 mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                              BN_CTX *ctx);
+
+// BN_mod_lshift sets |r| = (|a| << n) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n,
+                                 const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_lshift_quick acts like |BN_mod_lshift| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n,
+                                       const BIGNUM *m);
+
+// BN_mod_lshift1 sets |r| = (|a| << 1) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                                  BN_CTX *ctx);
+
+// BN_mod_lshift1_quick acts like |BN_mod_lshift1| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a,
+                                        const BIGNUM *m);
+
+// BN_mod_sqrt returns a newly-allocated |BIGNUM|, r, such that
+// r^2 == a (mod p). |p| must be a prime. It returns NULL on error or if |a| is
+// not a square mod |p|. In the latter case, it will add |BN_R_NOT_A_SQUARE| to
+// the error queue.
+OPENSSL_EXPORT BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p,
+                                   BN_CTX *ctx);
+
+
+// Random and prime number generation.
+
+// The following are values for the |top| parameter of |BN_rand|.
+#define BN_RAND_TOP_ANY    (-1)
+#define BN_RAND_TOP_ONE     0
+#define BN_RAND_TOP_TWO     1
+
+// The following are values for the |bottom| parameter of |BN_rand|.
+#define BN_RAND_BOTTOM_ANY  0
+#define BN_RAND_BOTTOM_ODD  1
+
+// BN_rand sets |rnd| to a random number of length |bits|. It returns one on
+// success and zero otherwise.
+//
+// |top| must be one of the |BN_RAND_TOP_*| values. If |BN_RAND_TOP_ONE|, the
+// most-significant bit, if any, will be set. If |BN_RAND_TOP_TWO|, the two
+// most significant bits, if any, will be set. If |BN_RAND_TOP_ANY|, no extra
+// action will be taken and |BN_num_bits(rnd)| may not equal |bits| if the most
+// significant bits randomly ended up as zeros.
+//
+// |bottom| must be one of the |BN_RAND_BOTTOM_*| values. If
+// |BN_RAND_BOTTOM_ODD|, the least-significant bit, if any, will be set. If
+// |BN_RAND_BOTTOM_ANY|, no extra action will be taken.
+OPENSSL_EXPORT int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_pseudo_rand is an alias for |BN_rand|.
+OPENSSL_EXPORT int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_rand_range is equivalent to |BN_rand_range_ex| with |min_inclusive| set
+// to zero and |max_exclusive| set to |range|.
+OPENSSL_EXPORT int BN_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+// BN_rand_range_ex sets |rnd| to a random value in
+// [min_inclusive..max_exclusive). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_rand_range_ex(BIGNUM *r, BN_ULONG min_inclusive,
+                                    const BIGNUM *max_exclusive);
+
+// BN_pseudo_rand_range is an alias for BN_rand_range.
+OPENSSL_EXPORT int BN_pseudo_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+#define BN_GENCB_GENERATED 0
+#define BN_GENCB_PRIME_TEST 1
+
+// bn_gencb_st, or |BN_GENCB|, holds a callback function that is used by
+// generation functions that can take a very long time to complete. Use
+// |BN_GENCB_set| to initialise a |BN_GENCB| structure.
+//
+// The callback receives the address of that |BN_GENCB| structure as its last
+// argument and the user is free to put an arbitrary pointer in |arg|. The other
+// arguments are set as follows:
+//   event=BN_GENCB_GENERATED, n=i:   after generating the i'th possible prime
+//                                    number.
+//   event=BN_GENCB_PRIME_TEST, n=-1: when finished trial division primality
+//                                    checks.
+//   event=BN_GENCB_PRIME_TEST, n=i:  when the i'th primality test has finished.
+//
+// The callback can return zero to abort the generation progress or one to
+// allow it to continue.
+//
+// When other code needs to call a BN generation function it will often take a
+// BN_GENCB argument and may call the function with other argument values.
+struct bn_gencb_st {
+  void *arg;        // callback-specific data
+  int (*callback)(int event, int n, struct bn_gencb_st *);
+};
+
+// BN_GENCB_set configures |callback| to call |f| and sets |callout->arg| to
+// |arg|.
+OPENSSL_EXPORT void BN_GENCB_set(BN_GENCB *callback,
+                                 int (*f)(int event, int n, BN_GENCB *),
+                                 void *arg);
+
+// BN_GENCB_call calls |callback|, if not NULL, and returns the return value of
+// the callback, or 1 if |callback| is NULL.
+OPENSSL_EXPORT int BN_GENCB_call(BN_GENCB *callback, int event, int n);
+
+// BN_generate_prime_ex sets |ret| to a prime number of |bits| length. If safe
+// is non-zero then the prime will be such that (ret-1)/2 is also a prime.
+// (This is needed for Diffie-Hellman groups to ensure that the only subgroups
+// are of size 2 and (p-1)/2.).
+//
+// If |add| is not NULL, the prime will fulfill the condition |ret| % |add| ==
+// |rem| in order to suit a given generator. (If |rem| is NULL then |ret| %
+// |add| == 1.)
+//
+// If |cb| is not NULL, it will be called during processing to give an
+// indication of progress. See the comments for |BN_GENCB|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe,
+                                        const BIGNUM *add, const BIGNUM *rem,
+                                        BN_GENCB *cb);
+
+// BN_prime_checks_for_validation can be used as the |checks| argument to the
+// primarily testing functions when validating an externally-supplied candidate
+// prime. It gives a false positive rate of at most 2^{-128}. (The worst case
+// false positive rate for a single iteration is 1/4, so we perform 32
+// iterations.)
+#define BN_prime_checks_for_validation 32
+
+// BN_prime_checks_for_generation can be used as the |checks| argument to the
+// primality testing functions when generating random primes. It gives a false
+// positive rate at most the security level of the corresponding RSA key size.
+//
+// Note this value only performs enough checks if the candidate prime was
+// selected randomly. If validating an externally-supplied candidate, especially
+// one that may be selected adversarially, use |BN_prime_checks_for_validation|
+// instead.
+#define BN_prime_checks_for_generation 0
+
+// bn_primality_result_t enumerates the outcomes of primality-testing.
+enum bn_primality_result_t {
+  bn_probably_prime,
+  bn_composite,
+  bn_non_prime_power_composite,
+};
+
+// BN_enhanced_miller_rabin_primality_test tests whether |w| is probably a prime
+// number using the Enhanced Miller-Rabin Test (FIPS 186-4 C.3.2) with
+// |checks| iterations and returns the result in |out_result|. Enhanced
+// Miller-Rabin tests primality for odd integers greater than 3, returning
+// |bn_probably_prime| if the number is probably prime,
+// |bn_non_prime_power_composite| if the number is a composite that is not the
+// power of a single prime, and |bn_composite| otherwise. It returns one on
+// success and zero on failure. If |cb| is not NULL, then it is called during
+// each iteration of the primality test.
+//
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+OPENSSL_EXPORT int BN_enhanced_miller_rabin_primality_test(
+    enum bn_primality_result_t *out_result, const BIGNUM *w, int checks,
+    BN_CTX *ctx, BN_GENCB *cb);
+
+// BN_primality_test sets |*is_probably_prime| to one if |candidate| is
+// probably a prime number by the Miller-Rabin test or zero if it's certainly
+// not.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning a false positive is at most 2^{2*checks}. See
+// |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// The function returns one on success and zero on error.
+OPENSSL_EXPORT int BN_primality_test(int *is_probably_prime,
+                                     const BIGNUM *candidate, int checks,
+                                     BN_CTX *ctx, int do_trial_division,
+                                     BN_GENCB *cb);
+
+// BN_is_prime_fasttest_ex returns one if |candidate| is probably a prime
+// number by the Miller-Rabin test, zero if it's certainly not and -1 on error.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning one when |candidate| is composite is at most 2^{2*checks}.
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// WARNING: deprecated. Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_fasttest_ex(const BIGNUM *candidate, int checks,
+                                           BN_CTX *ctx, int do_trial_division,
+                                           BN_GENCB *cb);
+
+// BN_is_prime_ex acts the same as |BN_is_prime_fasttest_ex| with
+// |do_trial_division| set to zero.
+//
+// WARNING: deprecated: Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_ex(const BIGNUM *candidate, int checks,
+                                  BN_CTX *ctx, BN_GENCB *cb);
+
+
+// Number theory functions
+
+// BN_gcd sets |r| = gcd(|a|, |b|). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_gcd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mod_inverse sets |out| equal to |a|^-1, mod |n|. If |out| is NULL, a
+// fresh BIGNUM is allocated. It returns the result or NULL on error.
+//
+// If |n| is even then the operation is performed using an algorithm that avoids
+// some branches but which isn't constant-time. This function shouldn't be used
+// for secret values; use |BN_mod_inverse_blinded| instead. Or, if |n| is
+// guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem.
+OPENSSL_EXPORT BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a,
+                                      const BIGNUM *n, BN_CTX *ctx);
+
+// BN_mod_inverse_blinded sets |out| equal to |a|^-1, mod |n|, where |n| is the
+// Montgomery modulus for |mont|. |a| must be non-negative and must be less
+// than |n|. |n| must be greater than 1. |a| is blinded (masked by a random
+// value) to protect it against side-channel attacks. On failure, if the failure
+// was caused by |a| having no inverse mod |n| then |*out_no_inverse| will be
+// set to one; otherwise it will be set to zero.
+//
+// Note this function may incorrectly report |a| has no inverse if the random
+// blinding value has no inverse. It should only be used when |n| has few
+// non-invertible elements, such as an RSA modulus.
+int BN_mod_inverse_blinded(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                           const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_inverse_odd sets |out| equal to |a|^-1, mod |n|. |a| must be
+// non-negative and must be less than |n|. |n| must be odd. This function
+// shouldn't be used for secret values; use |BN_mod_inverse_blinded| instead.
+// Or, if |n| is guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem. It returns one on success or zero on
+// failure. On failure, if the failure was caused by |a| having no inverse mod
+// |n| then |*out_no_inverse| will be set to one; otherwise it will be set to
+// zero.
+int BN_mod_inverse_odd(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                       const BIGNUM *n, BN_CTX *ctx);
+
+
+// Montgomery arithmetic.
+
+// BN_MONT_CTX contains the precomputed values needed to work in a specific
+// Montgomery domain.
+
+// BN_MONT_CTX_new_for_modulus returns a fresh |BN_MONT_CTX| given the modulus,
+// |mod| or NULL on error. Note this function assumes |mod| is public.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_for_modulus(const BIGNUM *mod,
+                                                        BN_CTX *ctx);
+
+// BN_MONT_CTX_new_consttime behaves like |BN_MONT_CTX_new_for_modulus| but
+// treats |mod| as secret.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_consttime(const BIGNUM *mod,
+                                                      BN_CTX *ctx);
+
+// BN_MONT_CTX_free frees memory associated with |mont|.
+OPENSSL_EXPORT void BN_MONT_CTX_free(BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_copy sets |to| equal to |from|. It returns |to| on success or
+// NULL on error.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,
+                                             const BN_MONT_CTX *from);
+
+// BN_MONT_CTX_set_locked takes |lock| and checks whether |*pmont| is NULL. If
+// so, it creates a new |BN_MONT_CTX| and sets the modulus for it to |mod|. It
+// then stores it as |*pmont|. It returns one on success and zero on error. Note
+// this function assumes |mod| is public.
+//
+// If |*pmont| is already non-NULL then it does nothing and returns one.
+int BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, CRYPTO_MUTEX *lock,
+                           const BIGNUM *mod, BN_CTX *bn_ctx);
+
+// BN_to_montgomery sets |ret| equal to |a| in the Montgomery domain. |a| is
+// assumed to be in the range [0, n), where |n| is the Montgomery modulus. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_to_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_from_montgomery sets |ret| equal to |a| * R^-1, i.e. translates values out
+// of the Montgomery domain. |a| is assumed to be in the range [0, n*R), where
+// |n| is the Montgomery modulus. Note n < R, so inputs in the range [0, n*n)
+// are valid. This function returns one on success or zero on error.
+OPENSSL_EXPORT int BN_from_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                      const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_mul_montgomery set |r| equal to |a| * |b|, in the Montgomery domain.
+// Both |a| and |b| must already be in the Montgomery domain (by
+// |BN_to_montgomery|). In particular, |a| and |b| are assumed to be in the
+// range [0, n), where |n| is the Montgomery modulus. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int BN_mod_mul_montgomery(BIGNUM *r, const BIGNUM *a,
+                                         const BIGNUM *b,
+                                         const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+
+// Exponentiation.
+
+// BN_exp sets |r| equal to |a|^{|p|}. It does so with a square-and-multiply
+// algorithm that leaks side-channel information. It returns one on success or
+// zero otherwise.
+OPENSSL_EXPORT int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                          BN_CTX *ctx);
+
+// BN_mod_exp sets |r| equal to |a|^{|p|} mod |m|. It does so with the best
+// algorithm for the values provided. It returns one on success or zero
+// otherwise. The |BN_mod_exp_mont_consttime| variant must be used if the
+// exponent is secret.
+OPENSSL_EXPORT int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_exp_mont behaves like |BN_mod_exp| but treats |a| as secret and
+// requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                                   const BIGNUM *m, BN_CTX *ctx,
+                                   const BN_MONT_CTX *mont);
+
+// BN_mod_exp_mont_consttime behaves like |BN_mod_exp| but treats |a|, |p|, and
+// |m| as secret and requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a,
+                                             const BIGNUM *p, const BIGNUM *m,
+                                             BN_CTX *ctx,
+                                             const BN_MONT_CTX *mont);
+
+
+// Deprecated functions
+
+// BN_bn2mpi serialises the value of |in| to |out|, using a format that consists
+// of the number's length in bytes represented as a 4-byte big-endian number,
+// and the number itself in big-endian format, where the most significant bit
+// signals a negative number. (The representation of numbers with the MSB set is
+// prefixed with null byte). |out| must have sufficient space available; to
+// find the needed amount of space, call the function with |out| set to NULL.
+OPENSSL_EXPORT size_t BN_bn2mpi(const BIGNUM *in, uint8_t *out);
+
+// BN_mpi2bn parses |len| bytes from |in| and returns the resulting value. The
+// bytes at |in| are expected to be in the format emitted by |BN_bn2mpi|.
+//
+// If |out| is NULL then a fresh |BIGNUM| is allocated and returned, otherwise
+// |out| is reused and returned. On error, NULL is returned and the error queue
+// is updated.
+OPENSSL_EXPORT BIGNUM *BN_mpi2bn(const uint8_t *in, size_t len, BIGNUM *out);
+
+// BN_mod_exp_mont_word is like |BN_mod_exp_mont| except that the base |a| is
+// given as a |BN_ULONG| instead of a |BIGNUM *|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp_mont_word(BIGNUM *r, BN_ULONG a, const BIGNUM *p,
+                                        const BIGNUM *m, BN_CTX *ctx,
+                                        const BN_MONT_CTX *mont);
+
+// BN_mod_exp2_mont calculates (a1^p1) * (a2^p2) mod m. It returns 1 on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp2_mont(BIGNUM *r, const BIGNUM *a1,
+                                    const BIGNUM *p1, const BIGNUM *a2,
+                                    const BIGNUM *p2, const BIGNUM *m,
+                                    BN_CTX *ctx, const BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_new returns a fresh |BN_MONT_CTX| or NULL on allocation failure.
+// Use |BN_MONT_CTX_new_for_modulus| instead.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new(void);
+
+// BN_MONT_CTX_set sets up a Montgomery context given the modulus, |mod|. It
+// returns one on success and zero on error. Use |BN_MONT_CTX_new_for_modulus|
+// instead.
+OPENSSL_EXPORT int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod,
+                                   BN_CTX *ctx);
+
+// BN_bn2binpad behaves like |BN_bn2bin_padded|, but it returns |len| on success
+// and -1 on error.
+//
+// Use |BN_bn2bin_padded| instead. It is |size_t|-clean.
+OPENSSL_EXPORT int BN_bn2binpad(const BIGNUM *in, uint8_t *out, int len);
+
+// BN_prime_checks is a deprecated alias for |BN_prime_checks_for_validation|.
+// Use |BN_prime_checks_for_generation| or |BN_prime_checks_for_validation|
+// instead. (This defaults to the |_for_validation| value in order to be
+// conservative.)
+
+
+// Private functions
+
+struct bignum_st {
+  // d is a pointer to an array of |width| |BN_BITS2|-bit chunks in
+  // little-endian order. This stores the absolute value of the number.
+  BN_ULONG *d;
+  // width is the number of elements of |d| which are valid. This value is not
+  // necessarily minimal; the most-significant words of |d| may be zero.
+  // |width| determines a potentially loose upper-bound on the absolute value
+  // of the |BIGNUM|.
+  //
+  // Functions taking |BIGNUM| inputs must compute the same answer for all
+  // possible widths. |bn_minimal_width|, |bn_set_minimal_width|, and other
+  // helpers may be used to recover the minimal width, provided it is not
+  // secret. If it is secret, use a different algorithm. Functions may output
+  // minimal or non-minimal |BIGNUM|s depending on secrecy requirements, but
+  // those which cause widths to unboundedly grow beyond the minimal value
+  // should be documented such.
+  //
+  // Note this is different from historical |BIGNUM| semantics.
+  int width;
+  // dmax is number of elements of |d| which are allocated.
+  int dmax;
+  // neg is one if the number if negative and zero otherwise.
+  int neg;
+  // flags is a bitmask of |BN_FLG_*| values
+  int flags;
+};
+
+struct bn_mont_ctx_st {
+  // RR is R^2, reduced modulo |N|. It is used to convert to Montgomery form. It
+  // is guaranteed to have the same width as |N|.
+  BIGNUM RR;
+  // N is the modulus. It is always stored in minimal form, so |N.width|
+  // determines R.
+  BIGNUM N;
+  BN_ULONG n0[2];  // least significant words of (R*Ri-1)/N
+};
+
+OPENSSL_EXPORT unsigned BN_num_bits_word(BN_ULONG l);
+
+#define BN_FLG_MALLOCED 0x01
+#define BN_FLG_STATIC_DATA 0x02
+// |BN_FLG_CONSTTIME| has been removed and intentionally omitted so code relying
+// on it will not compile. Consumers outside BoringSSL should use the
+// higher-level cryptographic algorithms exposed by other modules. Consumers
+// within the library should call the appropriate timing-sensitive algorithm
+// directly.
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIGNUM, BN_free)
+BORINGSSL_MAKE_DELETER(BN_CTX, BN_CTX_free)
+BORINGSSL_MAKE_DELETER(BN_MONT_CTX, BN_MONT_CTX_free)
+
+class BN_CTXScope {
+ public:
+  BN_CTXScope(BN_CTX *ctx) : ctx_(ctx) { BN_CTX_start(ctx_); }
+  ~BN_CTXScope() { BN_CTX_end(ctx_); }
+
+ private:
+  BN_CTX *ctx_;
+
+  BN_CTXScope(BN_CTXScope &) = delete;
+  BN_CTXScope &operator=(BN_CTXScope &) = delete;
+};
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define BN_R_ARG2_LT_ARG3 100
+#define BN_R_BAD_RECIPROCAL 101
+#define BN_R_BIGNUM_TOO_LONG 102
+#define BN_R_BITS_TOO_SMALL 103
+#define BN_R_CALLED_WITH_EVEN_MODULUS 104
+#define BN_R_DIV_BY_ZERO 105
+#define BN_R_EXPAND_ON_STATIC_BIGNUM_DATA 106
+#define BN_R_INPUT_NOT_REDUCED 107
+#define BN_R_INVALID_RANGE 108
+#define BN_R_NEGATIVE_NUMBER 109
+#define BN_R_NOT_A_SQUARE 110
+#define BN_R_NOT_INITIALIZED 111
+#define BN_R_NO_INVERSE 112
+#define BN_R_PRIVATE_KEY_TOO_LARGE 113
+#define BN_R_P_IS_NOT_PRIME 114
+#define BN_R_TOO_MANY_ITERATIONS 115
+#define BN_R_TOO_MANY_TEMPORARY_VARIABLES 116
+#define BN_R_BAD_ENCODING 117
+#define BN_R_ENCODE_ERROR 118
+#define BN_R_INVALID_INPUT 119
+
+#endif  // OPENSSL_HEADER_BN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.grpc_back
new file mode 100644
index 0000000..5cd2563
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bn.h.grpc_back	
@@ -0,0 +1,1056 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_BN_H
+#define OPENSSL_HEADER_BN_H
+
+#include <openssl/base.h>
+#include <openssl/thread.h>
+
+#include <inttypes.h>  // for PRIu64 and friends
+#include <stdio.h>  // for FILE*
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// BN provides support for working with arbitrary sized integers. For example,
+// although the largest integer supported by the compiler might be 64 bits, BN
+// will allow you to work with numbers until you run out of memory.
+
+
+// BN_ULONG is the native word size when working with big integers.
+//
+// Note: on some platforms, inttypes.h does not define print format macros in
+// C++ unless |__STDC_FORMAT_MACROS| defined. This is due to text in C99 which
+// was never adopted in any C++ standard and explicitly overruled in C++11. As
+// this is a public header, bn.h does not define |__STDC_FORMAT_MACROS| itself.
+// Projects which use |BN_*_FMT*| with outdated C headers may need to define it
+// externally.
+#if defined(OPENSSL_64_BIT)
+#define BN_ULONG uint64_t
+#define BN_BITS2 64
+#define BN_DEC_FMT1 "%" PRIu64
+#define BN_DEC_FMT2 "%019" PRIu64
+#define BN_HEX_FMT1 "%" PRIx64
+#define BN_HEX_FMT2 "%016" PRIx64
+#elif defined(OPENSSL_32_BIT)
+#define BN_ULONG uint32_t
+#define BN_BITS2 32
+#define BN_DEC_FMT1 "%" PRIu32
+#define BN_DEC_FMT2 "%09" PRIu32
+#define BN_HEX_FMT1 "%" PRIx32
+#define BN_HEX_FMT2 "%08" PRIx32
+#else
+#error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
+#endif
+
+
+// Allocation and freeing.
+
+// BN_new creates a new, allocated BIGNUM and initialises it.
+OPENSSL_EXPORT BIGNUM *BN_new(void);
+
+// BN_init initialises a stack allocated |BIGNUM|.
+OPENSSL_EXPORT void BN_init(BIGNUM *bn);
+
+// BN_free frees the data referenced by |bn| and, if |bn| was originally
+// allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_free(BIGNUM *bn);
+
+// BN_clear_free erases and frees the data referenced by |bn| and, if |bn| was
+// originally allocated on the heap, frees |bn| also.
+OPENSSL_EXPORT void BN_clear_free(BIGNUM *bn);
+
+// BN_dup allocates a new BIGNUM and sets it equal to |src|. It returns the
+// allocated BIGNUM on success or NULL otherwise.
+OPENSSL_EXPORT BIGNUM *BN_dup(const BIGNUM *src);
+
+// BN_copy sets |dest| equal to |src| and returns |dest| or NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src);
+
+// BN_clear sets |bn| to zero and erases the old data.
+OPENSSL_EXPORT void BN_clear(BIGNUM *bn);
+
+// BN_value_one returns a static BIGNUM with value 1.
+OPENSSL_EXPORT const BIGNUM *BN_value_one(void);
+
+
+// Basic functions.
+
+// BN_num_bits returns the minimum number of bits needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bits(const BIGNUM *bn);
+
+// BN_num_bytes returns the minimum number of bytes needed to represent the
+// absolute value of |bn|.
+OPENSSL_EXPORT unsigned BN_num_bytes(const BIGNUM *bn);
+
+// BN_zero sets |bn| to zero.
+OPENSSL_EXPORT void BN_zero(BIGNUM *bn);
+
+// BN_one sets |bn| to one. It returns one on success or zero on allocation
+// failure.
+OPENSSL_EXPORT int BN_one(BIGNUM *bn);
+
+// BN_set_word sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_word(BIGNUM *bn, BN_ULONG value);
+
+// BN_set_u64 sets |bn| to |value|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_set_u64(BIGNUM *bn, uint64_t value);
+
+// BN_set_negative sets the sign of |bn|.
+OPENSSL_EXPORT void BN_set_negative(BIGNUM *bn, int sign);
+
+// BN_is_negative returns one if |bn| is negative and zero otherwise.
+OPENSSL_EXPORT int BN_is_negative(const BIGNUM *bn);
+
+
+// Conversion functions.
+
+// BN_bin2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a big-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_bin2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2bin serialises the absolute value of |in| to |out| as a big-endian
+// integer, which must have |BN_num_bytes| of space available. It returns the
+// number of bytes written. Note this function leaks the magnitude of |in|. If
+// |in| is secret, use |BN_bn2bin_padded| instead.
+OPENSSL_EXPORT size_t BN_bn2bin(const BIGNUM *in, uint8_t *out);
+
+// BN_le2bn sets |*ret| to the value of |len| bytes from |in|, interpreted as
+// a little-endian number, and returns |ret|. If |ret| is NULL then a fresh
+// |BIGNUM| is allocated and returned. It returns NULL on allocation
+// failure.
+OPENSSL_EXPORT BIGNUM *BN_le2bn(const uint8_t *in, size_t len, BIGNUM *ret);
+
+// BN_bn2le_padded serialises the absolute value of |in| to |out| as a
+// little-endian integer, which must have |len| of space available, padding
+// out the remainder of out with zeros. If |len| is smaller than |BN_num_bytes|,
+// the function fails and returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2le_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2bin_padded serialises the absolute value of |in| to |out| as a
+// big-endian integer. The integer is padded with leading zeros up to size
+// |len|. If |len| is smaller than |BN_num_bytes|, the function fails and
+// returns 0. Otherwise, it returns 1.
+OPENSSL_EXPORT int BN_bn2bin_padded(uint8_t *out, size_t len, const BIGNUM *in);
+
+// BN_bn2cbb_padded behaves like |BN_bn2bin_padded| but writes to a |CBB|.
+OPENSSL_EXPORT int BN_bn2cbb_padded(CBB *out, size_t len, const BIGNUM *in);
+
+// BN_bn2hex returns an allocated string that contains a NUL-terminated, hex
+// representation of |bn|. If |bn| is negative, the first char in the resulting
+// string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2hex(const BIGNUM *bn);
+
+// BN_hex2bn parses the leading hex number from |in|, which may be proceeded by
+// a '-' to indicate a negative number and may contain trailing, non-hex data.
+// If |outp| is not NULL, it constructs a BIGNUM equal to the hex number and
+// stores it in |*outp|. If |*outp| is NULL then it allocates a new BIGNUM and
+// updates |*outp|. It returns the number of bytes of |in| processed or zero on
+// error.
+OPENSSL_EXPORT int BN_hex2bn(BIGNUM **outp, const char *in);
+
+// BN_bn2dec returns an allocated string that contains a NUL-terminated,
+// decimal representation of |bn|. If |bn| is negative, the first char in the
+// resulting string will be '-'. Returns NULL on allocation failure.
+OPENSSL_EXPORT char *BN_bn2dec(const BIGNUM *a);
+
+// BN_dec2bn parses the leading decimal number from |in|, which may be
+// proceeded by a '-' to indicate a negative number and may contain trailing,
+// non-decimal data. If |outp| is not NULL, it constructs a BIGNUM equal to the
+// decimal number and stores it in |*outp|. If |*outp| is NULL then it
+// allocates a new BIGNUM and updates |*outp|. It returns the number of bytes
+// of |in| processed or zero on error.
+OPENSSL_EXPORT int BN_dec2bn(BIGNUM **outp, const char *in);
+
+// BN_asc2bn acts like |BN_dec2bn| or |BN_hex2bn| depending on whether |in|
+// begins with "0X" or "0x" (indicating hex) or not (indicating decimal). A
+// leading '-' is still permitted and comes before the optional 0X/0x. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_asc2bn(BIGNUM **outp, const char *in);
+
+// BN_print writes a hex encoding of |a| to |bio|. It returns one on success
+// and zero on error.
+OPENSSL_EXPORT int BN_print(BIO *bio, const BIGNUM *a);
+
+// BN_print_fp acts like |BIO_print|, but wraps |fp| in a |BIO| first.
+OPENSSL_EXPORT int BN_print_fp(FILE *fp, const BIGNUM *a);
+
+// BN_get_word returns the absolute value of |bn| as a single word. If |bn| is
+// too large to be represented as a single word, the maximum possible value
+// will be returned.
+OPENSSL_EXPORT BN_ULONG BN_get_word(const BIGNUM *bn);
+
+// BN_get_u64 sets |*out| to the absolute value of |bn| as a |uint64_t| and
+// returns one. If |bn| is too large to be represented as a |uint64_t|, it
+// returns zero.
+OPENSSL_EXPORT int BN_get_u64(const BIGNUM *bn, uint64_t *out);
+
+
+// ASN.1 functions.
+
+// BN_parse_asn1_unsigned parses a non-negative DER INTEGER from |cbs| writes
+// the result to |ret|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_parse_asn1_unsigned(CBS *cbs, BIGNUM *ret);
+
+// BN_marshal_asn1 marshals |bn| as a non-negative DER INTEGER and appends the
+// result to |cbb|. It returns one on success and zero on failure.
+OPENSSL_EXPORT int BN_marshal_asn1(CBB *cbb, const BIGNUM *bn);
+
+
+// BIGNUM pools.
+//
+// Certain BIGNUM operations need to use many temporary variables and
+// allocating and freeing them can be quite slow. Thus such operations typically
+// take a |BN_CTX| parameter, which contains a pool of |BIGNUMs|. The |ctx|
+// argument to a public function may be NULL, in which case a local |BN_CTX|
+// will be created just for the lifetime of that call.
+//
+// A function must call |BN_CTX_start| first. Then, |BN_CTX_get| may be called
+// repeatedly to obtain temporary |BIGNUM|s. All |BN_CTX_get| calls must be made
+// before calling any other functions that use the |ctx| as an argument.
+//
+// Finally, |BN_CTX_end| must be called before returning from the function.
+// When |BN_CTX_end| is called, the |BIGNUM| pointers obtained from
+// |BN_CTX_get| become invalid.
+
+// BN_CTX_new returns a new, empty BN_CTX or NULL on allocation failure.
+OPENSSL_EXPORT BN_CTX *BN_CTX_new(void);
+
+// BN_CTX_free frees all BIGNUMs contained in |ctx| and then frees |ctx|
+// itself.
+OPENSSL_EXPORT void BN_CTX_free(BN_CTX *ctx);
+
+// BN_CTX_start "pushes" a new entry onto the |ctx| stack and allows future
+// calls to |BN_CTX_get|.
+OPENSSL_EXPORT void BN_CTX_start(BN_CTX *ctx);
+
+// BN_CTX_get returns a new |BIGNUM|, or NULL on allocation failure. Once
+// |BN_CTX_get| has returned NULL, all future calls will also return NULL until
+// |BN_CTX_end| is called.
+OPENSSL_EXPORT BIGNUM *BN_CTX_get(BN_CTX *ctx);
+
+// BN_CTX_end invalidates all |BIGNUM|s returned from |BN_CTX_get| since the
+// matching |BN_CTX_start| call.
+OPENSSL_EXPORT void BN_CTX_end(BN_CTX *ctx);
+
+
+// Simple arithmetic
+
+// BN_add sets |r| = |a| + |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_uadd sets |r| = |a| + |b|, where |a| and |b| are non-negative and |r| may
+// be the same pointer as either |a| or |b|. It returns one on success and zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_add_word adds |w| to |a|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_add_word(BIGNUM *a, BN_ULONG w);
+
+// BN_sub sets |r| = |a| - |b|, where |r| may be the same pointer as either |a|
+// or |b|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_usub sets |r| = |a| - |b|, where |a| and |b| are non-negative integers,
+// |b| < |a| and |r| may be the same pointer as either |a| or |b|. It returns
+// one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
+
+// BN_sub_word subtracts |w| from |a|. It returns one on success and zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_sub_word(BIGNUM *a, BN_ULONG w);
+
+// BN_mul sets |r| = |a| * |b|, where |r| may be the same pointer as |a| or
+// |b|. Returns one on success and zero otherwise.
+OPENSSL_EXPORT int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mul_word sets |bn| = |bn| * |w|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int BN_mul_word(BIGNUM *bn, BN_ULONG w);
+
+// BN_sqr sets |r| = |a|^2 (i.e. squares), where |r| may be the same pointer as
+// |a|. Returns one on success and zero otherwise. This is more efficient than
+// BN_mul(r, a, a, ctx).
+OPENSSL_EXPORT int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+
+// BN_div divides |numerator| by |divisor| and places the result in |quotient|
+// and the remainder in |rem|. Either of |quotient| or |rem| may be NULL, in
+// which case the respective value is not returned. The result is rounded
+// towards zero; thus if |numerator| is negative, the remainder will be zero or
+// negative. It returns one on success or zero on error.
+OPENSSL_EXPORT int BN_div(BIGNUM *quotient, BIGNUM *rem,
+                          const BIGNUM *numerator, const BIGNUM *divisor,
+                          BN_CTX *ctx);
+
+// BN_div_word sets |numerator| = |numerator|/|divisor| and returns the
+// remainder or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_div_word(BIGNUM *numerator, BN_ULONG divisor);
+
+// BN_sqrt sets |*out_sqrt| (which may be the same |BIGNUM| as |in|) to the
+// square root of |in|, using |ctx|. It returns one on success or zero on
+// error. Negative numbers and non-square numbers will result in an error with
+// appropriate errors on the error queue.
+OPENSSL_EXPORT int BN_sqrt(BIGNUM *out_sqrt, const BIGNUM *in, BN_CTX *ctx);
+
+
+// Comparison functions
+
+// BN_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int BN_cmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_cmp_word is like |BN_cmp| except it takes its second argument as a
+// |BN_ULONG| instead of a |BIGNUM|.
+OPENSSL_EXPORT int BN_cmp_word(const BIGNUM *a, BN_ULONG b);
+
+// BN_ucmp returns a value less than, equal to or greater than zero if the
+// absolute value of |a| is less than, equal to or greater than the absolute
+// value of |b|, respectively.
+OPENSSL_EXPORT int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
+
+// BN_equal_consttime returns one if |a| is equal to |b|, and zero otherwise.
+// It takes an amount of time dependent on the sizes of |a| and |b|, but
+// independent of the contents (including the signs) of |a| and |b|.
+OPENSSL_EXPORT int BN_equal_consttime(const BIGNUM *a, const BIGNUM *b);
+
+// BN_abs_is_word returns one if the absolute value of |bn| equals |w| and zero
+// otherwise.
+OPENSSL_EXPORT int BN_abs_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_zero returns one if |bn| is zero and zero otherwise.
+OPENSSL_EXPORT int BN_is_zero(const BIGNUM *bn);
+
+// BN_is_one returns one if |bn| equals one and zero otherwise.
+OPENSSL_EXPORT int BN_is_one(const BIGNUM *bn);
+
+// BN_is_word returns one if |bn| is exactly |w| and zero otherwise.
+OPENSSL_EXPORT int BN_is_word(const BIGNUM *bn, BN_ULONG w);
+
+// BN_is_odd returns one if |bn| is odd and zero otherwise.
+OPENSSL_EXPORT int BN_is_odd(const BIGNUM *bn);
+
+// BN_is_pow2 returns 1 if |a| is a power of two, and 0 otherwise.
+OPENSSL_EXPORT int BN_is_pow2(const BIGNUM *a);
+
+
+// Bitwise operations.
+
+// BN_lshift sets |r| equal to |a| << n. The |a| and |r| arguments may be the
+// same |BIGNUM|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_lshift1 sets |r| equal to |a| << 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_lshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_rshift sets |r| equal to |a| >> n, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift(BIGNUM *r, const BIGNUM *a, int n);
+
+// BN_rshift1 sets |r| equal to |a| >> 1, where |r| and |a| may be the same
+// pointer. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int BN_rshift1(BIGNUM *r, const BIGNUM *a);
+
+// BN_set_bit sets the |n|th, least-significant bit in |a|. For example, if |a|
+// is 2 then setting bit zero will make it 3. It returns one on success or zero
+// on allocation failure.
+OPENSSL_EXPORT int BN_set_bit(BIGNUM *a, int n);
+
+// BN_clear_bit clears the |n|th, least-significant bit in |a|. For example, if
+// |a| is 3, clearing bit zero will make it two. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int BN_clear_bit(BIGNUM *a, int n);
+
+// BN_is_bit_set returns one if the |n|th least-significant bit in |a| exists
+// and is set. Otherwise, it returns zero.
+OPENSSL_EXPORT int BN_is_bit_set(const BIGNUM *a, int n);
+
+// BN_mask_bits truncates |a| so that it is only |n| bits long. It returns one
+// on success or zero if |n| is negative.
+//
+// This differs from OpenSSL which additionally returns zero if |a|'s word
+// length is less than or equal to |n|, rounded down to a number of words. Note
+// word size is platform-dependent, so this behavior is also difficult to rely
+// on in OpenSSL and not very useful.
+OPENSSL_EXPORT int BN_mask_bits(BIGNUM *a, int n);
+
+// BN_count_low_zero_bits returns the number of low-order zero bits in |bn|, or
+// the number of factors of two which divide it. It returns zero if |bn| is
+// zero.
+OPENSSL_EXPORT int BN_count_low_zero_bits(const BIGNUM *bn);
+
+
+// Modulo arithmetic.
+
+// BN_mod_word returns |a| mod |w| or (BN_ULONG)-1 on error.
+OPENSSL_EXPORT BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w);
+
+// BN_mod_pow2 sets |r| = |a| mod 2^|e|. It returns 1 on success and
+// 0 on error.
+OPENSSL_EXPORT int BN_mod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_nnmod_pow2 sets |r| = |a| mod 2^|e| where |r| is always positive.
+// It returns 1 on success and 0 on error.
+OPENSSL_EXPORT int BN_nnmod_pow2(BIGNUM *r, const BIGNUM *a, size_t e);
+
+// BN_mod is a helper macro that calls |BN_div| and discards the quotient.
+#define BN_mod(rem, numerator, divisor, ctx) \
+  BN_div(NULL, (rem), (numerator), (divisor), (ctx))
+
+// BN_nnmod is a non-negative modulo function. It acts like |BN_mod|, but 0 <=
+// |rem| < |divisor| is always true. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BN_nnmod(BIGNUM *rem, const BIGNUM *numerator,
+                            const BIGNUM *divisor, BN_CTX *ctx);
+
+// BN_mod_add sets |r| = |a| + |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_add_quick acts like |BN_mod_add| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_sub sets |r| = |a| - |b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sub_quick acts like |BN_mod_sub| but requires that |a| and |b| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                                    const BIGNUM *m);
+
+// BN_mod_mul sets |r| = |a|*|b| mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_sqr sets |r| = |a|^2 mod |m|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                              BN_CTX *ctx);
+
+// BN_mod_lshift sets |r| = (|a| << n) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n,
+                                 const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_lshift_quick acts like |BN_mod_lshift| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n,
+                                       const BIGNUM *m);
+
+// BN_mod_lshift1 sets |r| = (|a| << 1) mod |m|, where |r| and |a| may be the
+// same pointer. It returns one on success and zero on error.
+OPENSSL_EXPORT int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m,
+                                  BN_CTX *ctx);
+
+// BN_mod_lshift1_quick acts like |BN_mod_lshift1| but requires that |a| be
+// non-negative and less than |m|.
+OPENSSL_EXPORT int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a,
+                                        const BIGNUM *m);
+
+// BN_mod_sqrt returns a newly-allocated |BIGNUM|, r, such that
+// r^2 == a (mod p). |p| must be a prime. It returns NULL on error or if |a| is
+// not a square mod |p|. In the latter case, it will add |BN_R_NOT_A_SQUARE| to
+// the error queue.
+OPENSSL_EXPORT BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p,
+                                   BN_CTX *ctx);
+
+
+// Random and prime number generation.
+
+// The following are values for the |top| parameter of |BN_rand|.
+#define BN_RAND_TOP_ANY    (-1)
+#define BN_RAND_TOP_ONE     0
+#define BN_RAND_TOP_TWO     1
+
+// The following are values for the |bottom| parameter of |BN_rand|.
+#define BN_RAND_BOTTOM_ANY  0
+#define BN_RAND_BOTTOM_ODD  1
+
+// BN_rand sets |rnd| to a random number of length |bits|. It returns one on
+// success and zero otherwise.
+//
+// |top| must be one of the |BN_RAND_TOP_*| values. If |BN_RAND_TOP_ONE|, the
+// most-significant bit, if any, will be set. If |BN_RAND_TOP_TWO|, the two
+// most significant bits, if any, will be set. If |BN_RAND_TOP_ANY|, no extra
+// action will be taken and |BN_num_bits(rnd)| may not equal |bits| if the most
+// significant bits randomly ended up as zeros.
+//
+// |bottom| must be one of the |BN_RAND_BOTTOM_*| values. If
+// |BN_RAND_BOTTOM_ODD|, the least-significant bit, if any, will be set. If
+// |BN_RAND_BOTTOM_ANY|, no extra action will be taken.
+OPENSSL_EXPORT int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_pseudo_rand is an alias for |BN_rand|.
+OPENSSL_EXPORT int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);
+
+// BN_rand_range is equivalent to |BN_rand_range_ex| with |min_inclusive| set
+// to zero and |max_exclusive| set to |range|.
+OPENSSL_EXPORT int BN_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+// BN_rand_range_ex sets |rnd| to a random value in
+// [min_inclusive..max_exclusive). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_rand_range_ex(BIGNUM *r, BN_ULONG min_inclusive,
+                                    const BIGNUM *max_exclusive);
+
+// BN_pseudo_rand_range is an alias for BN_rand_range.
+OPENSSL_EXPORT int BN_pseudo_rand_range(BIGNUM *rnd, const BIGNUM *range);
+
+#define BN_GENCB_GENERATED 0
+#define BN_GENCB_PRIME_TEST 1
+
+// bn_gencb_st, or |BN_GENCB|, holds a callback function that is used by
+// generation functions that can take a very long time to complete. Use
+// |BN_GENCB_set| to initialise a |BN_GENCB| structure.
+//
+// The callback receives the address of that |BN_GENCB| structure as its last
+// argument and the user is free to put an arbitrary pointer in |arg|. The other
+// arguments are set as follows:
+//   event=BN_GENCB_GENERATED, n=i:   after generating the i'th possible prime
+//                                    number.
+//   event=BN_GENCB_PRIME_TEST, n=-1: when finished trial division primality
+//                                    checks.
+//   event=BN_GENCB_PRIME_TEST, n=i:  when the i'th primality test has finished.
+//
+// The callback can return zero to abort the generation progress or one to
+// allow it to continue.
+//
+// When other code needs to call a BN generation function it will often take a
+// BN_GENCB argument and may call the function with other argument values.
+struct bn_gencb_st {
+  void *arg;        // callback-specific data
+  int (*callback)(int event, int n, struct bn_gencb_st *);
+};
+
+// BN_GENCB_set configures |callback| to call |f| and sets |callout->arg| to
+// |arg|.
+OPENSSL_EXPORT void BN_GENCB_set(BN_GENCB *callback,
+                                 int (*f)(int event, int n, BN_GENCB *),
+                                 void *arg);
+
+// BN_GENCB_call calls |callback|, if not NULL, and returns the return value of
+// the callback, or 1 if |callback| is NULL.
+OPENSSL_EXPORT int BN_GENCB_call(BN_GENCB *callback, int event, int n);
+
+// BN_generate_prime_ex sets |ret| to a prime number of |bits| length. If safe
+// is non-zero then the prime will be such that (ret-1)/2 is also a prime.
+// (This is needed for Diffie-Hellman groups to ensure that the only subgroups
+// are of size 2 and (p-1)/2.).
+//
+// If |add| is not NULL, the prime will fulfill the condition |ret| % |add| ==
+// |rem| in order to suit a given generator. (If |rem| is NULL then |ret| %
+// |add| == 1.)
+//
+// If |cb| is not NULL, it will be called during processing to give an
+// indication of progress. See the comments for |BN_GENCB|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe,
+                                        const BIGNUM *add, const BIGNUM *rem,
+                                        BN_GENCB *cb);
+
+// BN_prime_checks_for_validation can be used as the |checks| argument to the
+// primarily testing functions when validating an externally-supplied candidate
+// prime. It gives a false positive rate of at most 2^{-128}. (The worst case
+// false positive rate for a single iteration is 1/4, so we perform 32
+// iterations.)
+#define BN_prime_checks_for_validation 32
+
+// BN_prime_checks_for_generation can be used as the |checks| argument to the
+// primality testing functions when generating random primes. It gives a false
+// positive rate at most the security level of the corresponding RSA key size.
+//
+// Note this value only performs enough checks if the candidate prime was
+// selected randomly. If validating an externally-supplied candidate, especially
+// one that may be selected adversarially, use |BN_prime_checks_for_validation|
+// instead.
+#define BN_prime_checks_for_generation 0
+
+// bn_primality_result_t enumerates the outcomes of primality-testing.
+enum bn_primality_result_t {
+  bn_probably_prime,
+  bn_composite,
+  bn_non_prime_power_composite,
+};
+
+// BN_enhanced_miller_rabin_primality_test tests whether |w| is probably a prime
+// number using the Enhanced Miller-Rabin Test (FIPS 186-4 C.3.2) with
+// |checks| iterations and returns the result in |out_result|. Enhanced
+// Miller-Rabin tests primality for odd integers greater than 3, returning
+// |bn_probably_prime| if the number is probably prime,
+// |bn_non_prime_power_composite| if the number is a composite that is not the
+// power of a single prime, and |bn_composite| otherwise. It returns one on
+// success and zero on failure. If |cb| is not NULL, then it is called during
+// each iteration of the primality test.
+//
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+OPENSSL_EXPORT int BN_enhanced_miller_rabin_primality_test(
+    enum bn_primality_result_t *out_result, const BIGNUM *w, int checks,
+    BN_CTX *ctx, BN_GENCB *cb);
+
+// BN_primality_test sets |*is_probably_prime| to one if |candidate| is
+// probably a prime number by the Miller-Rabin test or zero if it's certainly
+// not.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning a false positive is at most 2^{2*checks}. See
+// |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// The function returns one on success and zero on error.
+OPENSSL_EXPORT int BN_primality_test(int *is_probably_prime,
+                                     const BIGNUM *candidate, int checks,
+                                     BN_CTX *ctx, int do_trial_division,
+                                     BN_GENCB *cb);
+
+// BN_is_prime_fasttest_ex returns one if |candidate| is probably a prime
+// number by the Miller-Rabin test, zero if it's certainly not and -1 on error.
+//
+// If |do_trial_division| is non-zero then |candidate| will be tested against a
+// list of small primes before Miller-Rabin tests. The probability of this
+// function returning one when |candidate| is composite is at most 2^{2*checks}.
+// See |BN_prime_checks_for_validation| and |BN_prime_checks_for_generation| for
+// recommended values of |checks|.
+//
+// If |cb| is not NULL then it is called during the checking process. See the
+// comment above |BN_GENCB|.
+//
+// WARNING: deprecated. Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_fasttest_ex(const BIGNUM *candidate, int checks,
+                                           BN_CTX *ctx, int do_trial_division,
+                                           BN_GENCB *cb);
+
+// BN_is_prime_ex acts the same as |BN_is_prime_fasttest_ex| with
+// |do_trial_division| set to zero.
+//
+// WARNING: deprecated: Use |BN_primality_test|.
+OPENSSL_EXPORT int BN_is_prime_ex(const BIGNUM *candidate, int checks,
+                                  BN_CTX *ctx, BN_GENCB *cb);
+
+
+// Number theory functions
+
+// BN_gcd sets |r| = gcd(|a|, |b|). It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int BN_gcd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                          BN_CTX *ctx);
+
+// BN_mod_inverse sets |out| equal to |a|^-1, mod |n|. If |out| is NULL, a
+// fresh BIGNUM is allocated. It returns the result or NULL on error.
+//
+// If |n| is even then the operation is performed using an algorithm that avoids
+// some branches but which isn't constant-time. This function shouldn't be used
+// for secret values; use |BN_mod_inverse_blinded| instead. Or, if |n| is
+// guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem.
+OPENSSL_EXPORT BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a,
+                                      const BIGNUM *n, BN_CTX *ctx);
+
+// BN_mod_inverse_blinded sets |out| equal to |a|^-1, mod |n|, where |n| is the
+// Montgomery modulus for |mont|. |a| must be non-negative and must be less
+// than |n|. |n| must be greater than 1. |a| is blinded (masked by a random
+// value) to protect it against side-channel attacks. On failure, if the failure
+// was caused by |a| having no inverse mod |n| then |*out_no_inverse| will be
+// set to one; otherwise it will be set to zero.
+//
+// Note this function may incorrectly report |a| has no inverse if the random
+// blinding value has no inverse. It should only be used when |n| has few
+// non-invertible elements, such as an RSA modulus.
+int BN_mod_inverse_blinded(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                           const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_inverse_odd sets |out| equal to |a|^-1, mod |n|. |a| must be
+// non-negative and must be less than |n|. |n| must be odd. This function
+// shouldn't be used for secret values; use |BN_mod_inverse_blinded| instead.
+// Or, if |n| is guaranteed to be prime, use
+// |BN_mod_exp_mont_consttime(out, a, m_minus_2, m, ctx, m_mont)|, taking
+// advantage of Fermat's Little Theorem. It returns one on success or zero on
+// failure. On failure, if the failure was caused by |a| having no inverse mod
+// |n| then |*out_no_inverse| will be set to one; otherwise it will be set to
+// zero.
+int BN_mod_inverse_odd(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
+                       const BIGNUM *n, BN_CTX *ctx);
+
+
+// Montgomery arithmetic.
+
+// BN_MONT_CTX contains the precomputed values needed to work in a specific
+// Montgomery domain.
+
+// BN_MONT_CTX_new_for_modulus returns a fresh |BN_MONT_CTX| given the modulus,
+// |mod| or NULL on error. Note this function assumes |mod| is public.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_for_modulus(const BIGNUM *mod,
+                                                        BN_CTX *ctx);
+
+// BN_MONT_CTX_new_consttime behaves like |BN_MONT_CTX_new_for_modulus| but
+// treats |mod| as secret.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new_consttime(const BIGNUM *mod,
+                                                      BN_CTX *ctx);
+
+// BN_MONT_CTX_free frees memory associated with |mont|.
+OPENSSL_EXPORT void BN_MONT_CTX_free(BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_copy sets |to| equal to |from|. It returns |to| on success or
+// NULL on error.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,
+                                             const BN_MONT_CTX *from);
+
+// BN_MONT_CTX_set_locked takes |lock| and checks whether |*pmont| is NULL. If
+// so, it creates a new |BN_MONT_CTX| and sets the modulus for it to |mod|. It
+// then stores it as |*pmont|. It returns one on success and zero on error. Note
+// this function assumes |mod| is public.
+//
+// If |*pmont| is already non-NULL then it does nothing and returns one.
+int BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, CRYPTO_MUTEX *lock,
+                           const BIGNUM *mod, BN_CTX *bn_ctx);
+
+// BN_to_montgomery sets |ret| equal to |a| in the Montgomery domain. |a| is
+// assumed to be in the range [0, n), where |n| is the Montgomery modulus. It
+// returns one on success or zero on error.
+OPENSSL_EXPORT int BN_to_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                    const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_from_montgomery sets |ret| equal to |a| * R^-1, i.e. translates values out
+// of the Montgomery domain. |a| is assumed to be in the range [0, n*R), where
+// |n| is the Montgomery modulus. Note n < R, so inputs in the range [0, n*n)
+// are valid. This function returns one on success or zero on error.
+OPENSSL_EXPORT int BN_from_montgomery(BIGNUM *ret, const BIGNUM *a,
+                                      const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+// BN_mod_mul_montgomery set |r| equal to |a| * |b|, in the Montgomery domain.
+// Both |a| and |b| must already be in the Montgomery domain (by
+// |BN_to_montgomery|). In particular, |a| and |b| are assumed to be in the
+// range [0, n), where |n| is the Montgomery modulus. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int BN_mod_mul_montgomery(BIGNUM *r, const BIGNUM *a,
+                                         const BIGNUM *b,
+                                         const BN_MONT_CTX *mont, BN_CTX *ctx);
+
+
+// Exponentiation.
+
+// BN_exp sets |r| equal to |a|^{|p|}. It does so with a square-and-multiply
+// algorithm that leaks side-channel information. It returns one on success or
+// zero otherwise.
+OPENSSL_EXPORT int BN_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                          BN_CTX *ctx);
+
+// BN_mod_exp sets |r| equal to |a|^{|p|} mod |m|. It does so with the best
+// algorithm for the values provided. It returns one on success or zero
+// otherwise. The |BN_mod_exp_mont_consttime| variant must be used if the
+// exponent is secret.
+OPENSSL_EXPORT int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                              const BIGNUM *m, BN_CTX *ctx);
+
+// BN_mod_exp_mont behaves like |BN_mod_exp| but treats |a| as secret and
+// requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+                                   const BIGNUM *m, BN_CTX *ctx,
+                                   const BN_MONT_CTX *mont);
+
+// BN_mod_exp_mont_consttime behaves like |BN_mod_exp| but treats |a|, |p|, and
+// |m| as secret and requires 0 <= |a| < |m|.
+OPENSSL_EXPORT int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a,
+                                             const BIGNUM *p, const BIGNUM *m,
+                                             BN_CTX *ctx,
+                                             const BN_MONT_CTX *mont);
+
+
+// Deprecated functions
+
+// BN_bn2mpi serialises the value of |in| to |out|, using a format that consists
+// of the number's length in bytes represented as a 4-byte big-endian number,
+// and the number itself in big-endian format, where the most significant bit
+// signals a negative number. (The representation of numbers with the MSB set is
+// prefixed with null byte). |out| must have sufficient space available; to
+// find the needed amount of space, call the function with |out| set to NULL.
+OPENSSL_EXPORT size_t BN_bn2mpi(const BIGNUM *in, uint8_t *out);
+
+// BN_mpi2bn parses |len| bytes from |in| and returns the resulting value. The
+// bytes at |in| are expected to be in the format emitted by |BN_bn2mpi|.
+//
+// If |out| is NULL then a fresh |BIGNUM| is allocated and returned, otherwise
+// |out| is reused and returned. On error, NULL is returned and the error queue
+// is updated.
+OPENSSL_EXPORT BIGNUM *BN_mpi2bn(const uint8_t *in, size_t len, BIGNUM *out);
+
+// BN_mod_exp_mont_word is like |BN_mod_exp_mont| except that the base |a| is
+// given as a |BN_ULONG| instead of a |BIGNUM *|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp_mont_word(BIGNUM *r, BN_ULONG a, const BIGNUM *p,
+                                        const BIGNUM *m, BN_CTX *ctx,
+                                        const BN_MONT_CTX *mont);
+
+// BN_mod_exp2_mont calculates (a1^p1) * (a2^p2) mod m. It returns 1 on success
+// or zero otherwise.
+OPENSSL_EXPORT int BN_mod_exp2_mont(BIGNUM *r, const BIGNUM *a1,
+                                    const BIGNUM *p1, const BIGNUM *a2,
+                                    const BIGNUM *p2, const BIGNUM *m,
+                                    BN_CTX *ctx, const BN_MONT_CTX *mont);
+
+// BN_MONT_CTX_new returns a fresh |BN_MONT_CTX| or NULL on allocation failure.
+// Use |BN_MONT_CTX_new_for_modulus| instead.
+OPENSSL_EXPORT BN_MONT_CTX *BN_MONT_CTX_new(void);
+
+// BN_MONT_CTX_set sets up a Montgomery context given the modulus, |mod|. It
+// returns one on success and zero on error. Use |BN_MONT_CTX_new_for_modulus|
+// instead.
+OPENSSL_EXPORT int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod,
+                                   BN_CTX *ctx);
+
+// BN_bn2binpad behaves like |BN_bn2bin_padded|, but it returns |len| on success
+// and -1 on error.
+//
+// Use |BN_bn2bin_padded| instead. It is |size_t|-clean.
+OPENSSL_EXPORT int BN_bn2binpad(const BIGNUM *in, uint8_t *out, int len);
+
+// BN_prime_checks is a deprecated alias for |BN_prime_checks_for_validation|.
+// Use |BN_prime_checks_for_generation| or |BN_prime_checks_for_validation|
+// instead. (This defaults to the |_for_validation| value in order to be
+// conservative.)
+
+
+// Private functions
+
+struct bignum_st {
+  // d is a pointer to an array of |width| |BN_BITS2|-bit chunks in
+  // little-endian order. This stores the absolute value of the number.
+  BN_ULONG *d;
+  // width is the number of elements of |d| which are valid. This value is not
+  // necessarily minimal; the most-significant words of |d| may be zero.
+  // |width| determines a potentially loose upper-bound on the absolute value
+  // of the |BIGNUM|.
+  //
+  // Functions taking |BIGNUM| inputs must compute the same answer for all
+  // possible widths. |bn_minimal_width|, |bn_set_minimal_width|, and other
+  // helpers may be used to recover the minimal width, provided it is not
+  // secret. If it is secret, use a different algorithm. Functions may output
+  // minimal or non-minimal |BIGNUM|s depending on secrecy requirements, but
+  // those which cause widths to unboundedly grow beyond the minimal value
+  // should be documented such.
+  //
+  // Note this is different from historical |BIGNUM| semantics.
+  int width;
+  // dmax is number of elements of |d| which are allocated.
+  int dmax;
+  // neg is one if the number if negative and zero otherwise.
+  int neg;
+  // flags is a bitmask of |BN_FLG_*| values
+  int flags;
+};
+
+struct bn_mont_ctx_st {
+  // RR is R^2, reduced modulo |N|. It is used to convert to Montgomery form. It
+  // is guaranteed to have the same width as |N|.
+  BIGNUM RR;
+  // N is the modulus. It is always stored in minimal form, so |N.width|
+  // determines R.
+  BIGNUM N;
+  BN_ULONG n0[2];  // least significant words of (R*Ri-1)/N
+};
+
+OPENSSL_EXPORT unsigned BN_num_bits_word(BN_ULONG l);
+
+#define BN_FLG_MALLOCED 0x01
+#define BN_FLG_STATIC_DATA 0x02
+// |BN_FLG_CONSTTIME| has been removed and intentionally omitted so code relying
+// on it will not compile. Consumers outside BoringSSL should use the
+// higher-level cryptographic algorithms exposed by other modules. Consumers
+// within the library should call the appropriate timing-sensitive algorithm
+// directly.
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BIGNUM, BN_free)
+BORINGSSL_MAKE_DELETER(BN_CTX, BN_CTX_free)
+BORINGSSL_MAKE_DELETER(BN_MONT_CTX, BN_MONT_CTX_free)
+
+class BN_CTXScope {
+ public:
+  BN_CTXScope(BN_CTX *ctx) : ctx_(ctx) { BN_CTX_start(ctx_); }
+  ~BN_CTXScope() { BN_CTX_end(ctx_); }
+
+ private:
+  BN_CTX *ctx_;
+
+  BN_CTXScope(BN_CTXScope &) = delete;
+  BN_CTXScope &operator=(BN_CTXScope &) = delete;
+};
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define BN_R_ARG2_LT_ARG3 100
+#define BN_R_BAD_RECIPROCAL 101
+#define BN_R_BIGNUM_TOO_LONG 102
+#define BN_R_BITS_TOO_SMALL 103
+#define BN_R_CALLED_WITH_EVEN_MODULUS 104
+#define BN_R_DIV_BY_ZERO 105
+#define BN_R_EXPAND_ON_STATIC_BIGNUM_DATA 106
+#define BN_R_INPUT_NOT_REDUCED 107
+#define BN_R_INVALID_RANGE 108
+#define BN_R_NEGATIVE_NUMBER 109
+#define BN_R_NOT_A_SQUARE 110
+#define BN_R_NOT_INITIALIZED 111
+#define BN_R_NO_INVERSE 112
+#define BN_R_PRIVATE_KEY_TOO_LARGE 113
+#define BN_R_P_IS_NOT_PRIME 114
+#define BN_R_TOO_MANY_ITERATIONS 115
+#define BN_R_TOO_MANY_TEMPORARY_VARIABLES 116
+#define BN_R_BAD_ENCODING 117
+#define BN_R_ENCODE_ERROR 118
+#define BN_R_INVALID_INPUT 119
+
+#endif  // OPENSSL_HEADER_BN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h
new file mode 100644
index 0000000..0ef0db5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h	
@@ -0,0 +1,137 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BUFFER_H
+#define OPENSSL_HEADER_BUFFER_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also mem.h.
+
+
+// buf_mem_st (aka |BUF_MEM|) is a generic buffer object used by OpenSSL.
+struct buf_mem_st {
+  size_t length;  // current number of bytes
+  char *data;
+  size_t max;  // size of buffer
+};
+
+// BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer.
+OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void);
+
+// BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself.
+OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf);
+
+// BUF_MEM_reserve ensures |buf| has capacity |cap| and allocates memory if
+// needed. It returns one on success and zero on error.
+OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap);
+
+// BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if
+// needed. If the length of |buf| increased, the new bytes are filled with
+// zeros. It returns the length of |buf|, or zero if there's an error.
+OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory
+// allocated memory on free.
+OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len);
+
+
+// Deprecated functions.
+
+// BUF_strdup calls |OPENSSL_strdup|.
+OPENSSL_EXPORT char *BUF_strdup(const char *str);
+
+// BUF_strnlen calls |OPENSSL_strnlen|.
+OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len);
+
+// BUF_strndup calls |OPENSSL_strndup|.
+OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size);
+
+// BUF_memdup calls |OPENSSL_memdup|.
+OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size);
+
+// BUF_strlcpy calls |OPENSSL_strlcpy|.
+OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
+
+// BUF_strlcat calls |OPENSSL_strlcat|.
+OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_BUFFER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.back
new file mode 100644
index 0000000..a57f000
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.back	
@@ -0,0 +1,137 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BUFFER_H
+#define OPENSSL_HEADER_BUFFER_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also mem.h.
+
+
+// buf_mem_st (aka |BUF_MEM|) is a generic buffer object used by OpenSSL.
+struct buf_mem_st {
+  size_t length;  // current number of bytes
+  char *data;
+  size_t max;  // size of buffer
+};
+
+// BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer.
+OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void);
+
+// BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself.
+OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf);
+
+// BUF_MEM_reserve ensures |buf| has capacity |cap| and allocates memory if
+// needed. It returns one on success and zero on error.
+OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap);
+
+// BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if
+// needed. If the length of |buf| increased, the new bytes are filled with
+// zeros. It returns the length of |buf|, or zero if there's an error.
+OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory
+// allocated memory on free.
+OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len);
+
+
+// Deprecated functions.
+
+// BUF_strdup calls |OPENSSL_strdup|.
+OPENSSL_EXPORT char *BUF_strdup(const char *str);
+
+// BUF_strnlen calls |OPENSSL_strnlen|.
+OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len);
+
+// BUF_strndup calls |OPENSSL_strndup|.
+OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size);
+
+// BUF_memdup calls |OPENSSL_memdup|.
+OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size);
+
+// BUF_strlcpy calls |OPENSSL_strlcpy|.
+OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
+
+// BUF_strlcat calls |OPENSSL_strlcat|.
+OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_BUFFER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.grpc_back
new file mode 100644
index 0000000..a57f000
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buf.h.grpc_back	
@@ -0,0 +1,137 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_BUFFER_H
+#define OPENSSL_HEADER_BUFFER_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also mem.h.
+
+
+// buf_mem_st (aka |BUF_MEM|) is a generic buffer object used by OpenSSL.
+struct buf_mem_st {
+  size_t length;  // current number of bytes
+  char *data;
+  size_t max;  // size of buffer
+};
+
+// BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer.
+OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void);
+
+// BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself.
+OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf);
+
+// BUF_MEM_reserve ensures |buf| has capacity |cap| and allocates memory if
+// needed. It returns one on success and zero on error.
+OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap);
+
+// BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if
+// needed. If the length of |buf| increased, the new bytes are filled with
+// zeros. It returns the length of |buf|, or zero if there's an error.
+OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory
+// allocated memory on free.
+OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len);
+
+
+// Deprecated functions.
+
+// BUF_strdup calls |OPENSSL_strdup|.
+OPENSSL_EXPORT char *BUF_strdup(const char *str);
+
+// BUF_strnlen calls |OPENSSL_strnlen|.
+OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len);
+
+// BUF_strndup calls |OPENSSL_strndup|.
+OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size);
+
+// BUF_memdup calls |OPENSSL_memdup|.
+OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size);
+
+// BUF_strlcpy calls |OPENSSL_strlcpy|.
+OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
+
+// BUF_strlcat calls |OPENSSL_strlcat|.
+OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_BUFFER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h
new file mode 100644
index 0000000..c6b721c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "buf.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.back
new file mode 100644
index 0000000..c6b721c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "buf.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.grpc_back
new file mode 100644
index 0000000..c6b721c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/buffer.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "buf.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h
new file mode 100644
index 0000000..5f04dfc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h	
@@ -0,0 +1,561 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_BYTESTRING_H
+#define OPENSSL_HEADER_BYTESTRING_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/span.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Bytestrings are used for parsing and building TLS and ASN.1 messages.
+//
+// A "CBS" (CRYPTO ByteString) represents a string of bytes in memory and
+// provides utility functions for safely parsing length-prefixed structures
+// like TLS and ASN.1 from it.
+//
+// A "CBB" (CRYPTO ByteBuilder) is a memory buffer that grows as needed and
+// provides utility functions for building length-prefixed messages.
+
+
+// CRYPTO ByteString
+
+struct cbs_st {
+  const uint8_t *data;
+  size_t len;
+
+#if !defined(BORINGSSL_NO_CXX)
+  // Allow implicit conversions to and from bssl::Span<const uint8_t>.
+  cbs_st(bssl::Span<const uint8_t> span)
+      : data(span.data()), len(span.size()) {}
+  operator bssl::Span<const uint8_t>() const {
+    return bssl::MakeConstSpan(data, len);
+  }
+
+  // Defining any constructors requires we explicitly default the others.
+  cbs_st() = default;
+  cbs_st(const cbs_st &) = default;
+#endif
+};
+
+// CBS_init sets |cbs| to point to |data|. It does not take ownership of
+// |data|.
+OPENSSL_EXPORT void CBS_init(CBS *cbs, const uint8_t *data, size_t len);
+
+// CBS_skip advances |cbs| by |len| bytes. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBS_skip(CBS *cbs, size_t len);
+
+// CBS_data returns a pointer to the contents of |cbs|.
+OPENSSL_EXPORT const uint8_t *CBS_data(const CBS *cbs);
+
+// CBS_len returns the number of bytes remaining in |cbs|.
+OPENSSL_EXPORT size_t CBS_len(const CBS *cbs);
+
+// CBS_stow copies the current contents of |cbs| into |*out_ptr| and
+// |*out_len|. If |*out_ptr| is not NULL, the contents are freed with
+// OPENSSL_free. It returns one on success and zero on allocation failure. On
+// success, |*out_ptr| should be freed with OPENSSL_free. If |cbs| is empty,
+// |*out_ptr| will be NULL.
+OPENSSL_EXPORT int CBS_stow(const CBS *cbs, uint8_t **out_ptr, size_t *out_len);
+
+// CBS_strdup copies the current contents of |cbs| into |*out_ptr| as a
+// NUL-terminated C string. If |*out_ptr| is not NULL, the contents are freed
+// with OPENSSL_free. It returns one on success and zero on allocation
+// failure. On success, |*out_ptr| should be freed with OPENSSL_free.
+//
+// NOTE: If |cbs| contains NUL bytes, the string will be truncated. Call
+// |CBS_contains_zero_byte(cbs)| to check for NUL bytes.
+OPENSSL_EXPORT int CBS_strdup(const CBS *cbs, char **out_ptr);
+
+// CBS_contains_zero_byte returns one if the current contents of |cbs| contains
+// a NUL byte and zero otherwise.
+OPENSSL_EXPORT int CBS_contains_zero_byte(const CBS *cbs);
+
+// CBS_mem_equal compares the current contents of |cbs| with the |len| bytes
+// starting at |data|. If they're equal, it returns one, otherwise zero. If the
+// lengths match, it uses a constant-time comparison.
+OPENSSL_EXPORT int CBS_mem_equal(const CBS *cbs, const uint8_t *data,
+                                 size_t len);
+
+// CBS_get_u8 sets |*out| to the next uint8_t from |cbs| and advances |cbs|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_u16 sets |*out| to the next, big-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16(CBS *cbs, uint16_t *out);
+
+// CBS_get_u16le sets |*out| to the next, little-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16le(CBS *cbs, uint16_t *out);
+
+// CBS_get_u24 sets |*out| to the next, big-endian 24-bit value from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32 sets |*out| to the next, big-endian uint32_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32le sets |*out| to the next, little-endian uint32_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32le(CBS *cbs, uint32_t *out);
+
+// CBS_get_u64 sets |*out| to the next, big-endian uint64_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64(CBS *cbs, uint64_t *out);
+
+// CBS_get_u64le sets |*out| to the next, little-endian uint64_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64le(CBS *cbs, uint64_t *out);
+
+// CBS_get_last_u8 sets |*out| to the last uint8_t from |cbs| and shortens
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_last_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_bytes sets |*out| to the next |len| bytes from |cbs| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_bytes(CBS *cbs, CBS *out, size_t len);
+
+// CBS_copy_bytes copies the next |len| bytes from |cbs| to |out| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_copy_bytes(CBS *cbs, uint8_t *out, size_t len);
+
+// CBS_get_u8_length_prefixed sets |*out| to the contents of an 8-bit,
+// length-prefixed value from |cbs| and advances |cbs| over it. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u16_length_prefixed sets |*out| to the contents of a 16-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u24_length_prefixed sets |*out| to the contents of a 24-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24_length_prefixed(CBS *cbs, CBS *out);
+
+
+// Parsing ASN.1
+//
+// |CBS| may be used to parse DER structures. Rather than using a schema
+// compiler, the following functions act on tag-length-value elements in the
+// serialization itself. Thus the caller is responsible for looping over a
+// SEQUENCE, branching on CHOICEs or OPTIONAL fields, checking for trailing
+// data, and handling explict vs. implicit tagging.
+//
+// Tags are represented as |unsigned| values in memory. The upper few bits store
+// the class and constructed bit, and the remaining bits store the tag
+// number. Note this differs from the DER serialization, to support tag numbers
+// beyond 31. Consumers must use the constants defined below to decompose or
+// assemble tags.
+//
+// This library treats an element's constructed bit as part of its tag. In DER,
+// the constructed bit is computable from the type. The constants for universal
+// types have the bit set. Callers must set it correctly for tagged types.
+// Explicitly-tagged types are always constructed, and implicitly-tagged types
+// inherit the underlying type's bit.
+
+// CBS_ASN1_TAG_SHIFT is how much the in-memory representation shifts the class
+// and constructed bits from the DER serialization.
+#define CBS_ASN1_TAG_SHIFT 24
+
+// CBS_ASN1_CONSTRUCTED may be ORed into a tag to set the constructed bit.
+#define CBS_ASN1_CONSTRUCTED (0x20u << CBS_ASN1_TAG_SHIFT)
+
+// The following values specify the tag class and may be ORed into a tag number
+// to produce the final tag. If none is used, the tag will be UNIVERSAL.
+#define CBS_ASN1_UNIVERSAL (0u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_APPLICATION (0x40u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_CONTEXT_SPECIFIC (0x80u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_PRIVATE (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_CLASS_MASK may be ANDed with a tag to query its class. This will
+// give one of the four values above.
+#define CBS_ASN1_CLASS_MASK (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_TAG_NUMBER_MASK may be ANDed with a tag to query its number.
+#define CBS_ASN1_TAG_NUMBER_MASK ((1u << (5 + CBS_ASN1_TAG_SHIFT)) - 1)
+
+// The following values are constants for UNIVERSAL tags. Note these constants
+// include the constructed bit.
+#define CBS_ASN1_BOOLEAN 0x1u
+#define CBS_ASN1_INTEGER 0x2u
+#define CBS_ASN1_BITSTRING 0x3u
+#define CBS_ASN1_OCTETSTRING 0x4u
+#define CBS_ASN1_NULL 0x5u
+#define CBS_ASN1_OBJECT 0x6u
+#define CBS_ASN1_ENUMERATED 0xau
+#define CBS_ASN1_UTF8STRING 0xcu
+#define CBS_ASN1_SEQUENCE (0x10u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_SET (0x11u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_NUMERICSTRING 0x12u
+#define CBS_ASN1_PRINTABLESTRING 0x13u
+#define CBS_ASN1_T61STRING 0x14u
+#define CBS_ASN1_VIDEOTEXSTRING 0x15u
+#define CBS_ASN1_IA5STRING 0x16u
+#define CBS_ASN1_UTCTIME 0x17u
+#define CBS_ASN1_GENERALIZEDTIME 0x18u
+#define CBS_ASN1_GRAPHICSTRING 0x19u
+#define CBS_ASN1_VISIBLESTRING 0x1au
+#define CBS_ASN1_GENERALSTRING 0x1bu
+#define CBS_ASN1_UNIVERSALSTRING 0x1cu
+#define CBS_ASN1_BMPSTRING 0x1eu
+
+// CBS_get_asn1 sets |*out| to the contents of DER-encoded, ASN.1 element (not
+// including tag and length bytes) and advances |cbs| over it. The ASN.1
+// element must match |tag_value|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_get_asn1_element acts like |CBS_get_asn1| but |out| will include the
+// ASN.1 header bytes too.
+OPENSSL_EXPORT int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_peek_asn1_tag looks ahead at the next ASN.1 tag and returns one
+// if the next ASN.1 element on |cbs| would have tag |tag_value|. If
+// |cbs| is empty or the tag does not match, it returns zero. Note: if
+// it returns one, CBS_get_asn1 may still fail if the rest of the
+// element is malformed.
+OPENSSL_EXPORT int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value);
+
+// CBS_get_any_asn1 sets |*out| to contain the next ASN.1 element from |*cbs|
+// (not including tag and length bytes), sets |*out_tag| to the tag number, and
+// advances |*cbs|. It returns one on success and zero on error. Either of |out|
+// and |out_tag| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1(CBS *cbs, CBS *out, unsigned *out_tag);
+
+// CBS_get_any_asn1_element sets |*out| to contain the next ASN.1 element from
+// |*cbs| (including header bytes) and advances |*cbs|. It sets |*out_tag| to
+// the tag number and |*out_header_len| to the length of the ASN.1 header. Each
+// of |out|, |out_tag|, and |out_header_len| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1_element(CBS *cbs, CBS *out,
+                                            unsigned *out_tag,
+                                            size_t *out_header_len);
+
+// CBS_get_any_ber_asn1_element acts the same as |CBS_get_any_asn1_element| but
+// also allows indefinite-length elements to be returned. In that case,
+// |*out_header_len| and |CBS_len(out)| will both be two as only the header is
+// returned, otherwise it behaves the same as the previous function.
+OPENSSL_EXPORT int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out,
+                                                unsigned *out_tag,
+                                                size_t *out_header_len);
+
+// CBS_get_asn1_uint64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being negative, or too large to represent
+// in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out);
+
+// CBS_get_asn1_int64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being too large to represent in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_int64(CBS *cbs, int64_t *out);
+
+// CBS_get_asn1_bool gets an ASN.1 BOOLEAN from |cbs| and sets |*out| to zero
+// or one based on its value. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBS_get_asn1_bool(CBS *cbs, int *out);
+
+// CBS_get_optional_asn1 gets an optional explicitly-tagged element from |cbs|
+// tagged with |tag| and sets |*out| to its contents, or ignores it if |out| is
+// NULL. If present and if |out_present| is not NULL, it sets |*out_present| to
+// one, otherwise zero. It returns one on success, whether or not the element
+// was present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present,
+                                         unsigned tag);
+
+// CBS_get_optional_asn1_octet_string gets an optional
+// explicitly-tagged OCTET STRING from |cbs|. If present, it sets
+// |*out| to the string and |*out_present| to one. Otherwise, it sets
+// |*out| to empty and |*out_present| to zero. |out_present| may be
+// NULL. It returns one on success, whether or not the element was
+// present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out,
+                                                      int *out_present,
+                                                      unsigned tag);
+
+// CBS_get_optional_asn1_uint64 gets an optional explicitly-tagged
+// INTEGER from |cbs|. If present, it sets |*out| to the
+// value. Otherwise, it sets |*out| to |default_value|. It returns one
+// on success, whether or not the element was present, and zero on
+// decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out,
+                                                unsigned tag,
+                                                uint64_t default_value);
+
+// CBS_get_optional_asn1_bool gets an optional, explicitly-tagged BOOLEAN from
+// |cbs|. If present, it sets |*out| to either zero or one, based on the
+// boolean. Otherwise, it sets |*out| to |default_value|. It returns one on
+// success, whether or not the element was present, and zero on decode
+// failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                                              int default_value);
+
+// CBS_is_valid_asn1_bitstring returns one if |cbs| is a valid ASN.1 BIT STRING
+// and zero otherwise.
+OPENSSL_EXPORT int CBS_is_valid_asn1_bitstring(const CBS *cbs);
+
+// CBS_asn1_bitstring_has_bit returns one if |cbs| is a valid ASN.1 BIT STRING
+// and the specified bit is present and set. Otherwise, it returns zero. |bit|
+// is indexed starting from zero.
+OPENSSL_EXPORT int CBS_asn1_bitstring_has_bit(const CBS *cbs, unsigned bit);
+
+// CBS_asn1_oid_to_text interprets |cbs| as DER-encoded ASN.1 OBJECT IDENTIFIER
+// contents (not including the element framing) and returns the ASCII
+// representation (e.g., "1.2.840.113554.4.1.72585") in a newly-allocated
+// string, or NULL on failure. The caller must release the result with
+// |OPENSSL_free|.
+OPENSSL_EXPORT char *CBS_asn1_oid_to_text(const CBS *cbs);
+
+
+// CRYPTO ByteBuilder.
+//
+// |CBB| objects allow one to build length-prefixed serialisations. A |CBB|
+// object is associated with a buffer and new buffers are created with
+// |CBB_init|. Several |CBB| objects can point at the same buffer when a
+// length-prefix is pending, however only a single |CBB| can be 'current' at
+// any one time. For example, if one calls |CBB_add_u8_length_prefixed| then
+// the new |CBB| points at the same buffer as the original. But if the original
+// |CBB| is used then the length prefix is written out and the new |CBB| must
+// not be used again.
+//
+// If one needs to force a length prefix to be written out because a |CBB| is
+// going out of scope, use |CBB_flush|. If an operation on a |CBB| fails, it is
+// in an undefined state and must not be used except to call |CBB_cleanup|.
+
+struct cbb_buffer_st {
+  uint8_t *buf;
+  size_t len;      // The number of valid bytes.
+  size_t cap;      // The size of buf.
+  char can_resize; /* One iff |buf| is owned by this object. If not then |buf|
+                      cannot be resized. */
+  char error;      /* One iff there was an error writing to this CBB. All future
+                      operations will fail. */
+};
+
+struct cbb_st {
+  struct cbb_buffer_st *base;
+  // child points to a child CBB if a length-prefix is pending.
+  CBB *child;
+  // offset is the number of bytes from the start of |base->buf| to this |CBB|'s
+  // pending length prefix.
+  size_t offset;
+  // pending_len_len contains the number of bytes in this |CBB|'s pending
+  // length-prefix, or zero if no length-prefix is pending.
+  uint8_t pending_len_len;
+  char pending_is_asn1;
+  // is_child is true iff this is a child |CBB| (as opposed to a top-level
+  // |CBB|). Top-level objects are valid arguments for |CBB_finish|.
+  char is_child;
+};
+
+// CBB_zero sets an uninitialised |cbb| to the zero state. It must be
+// initialised with |CBB_init| or |CBB_init_fixed| before use, but it is safe to
+// call |CBB_cleanup| without a successful |CBB_init|. This may be used for more
+// uniform cleanup of a |CBB|.
+OPENSSL_EXPORT void CBB_zero(CBB *cbb);
+
+// CBB_init initialises |cbb| with |initial_capacity|. Since a |CBB| grows as
+// needed, the |initial_capacity| is just a hint. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int CBB_init(CBB *cbb, size_t initial_capacity);
+
+// CBB_init_fixed initialises |cbb| to write to |len| bytes at |buf|. Since
+// |buf| cannot grow, trying to write more than |len| bytes will cause CBB
+// functions to fail. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len);
+
+// CBB_cleanup frees all resources owned by |cbb| and other |CBB| objects
+// writing to the same buffer. This should be used in an error case where a
+// serialisation is abandoned.
+//
+// This function can only be called on a "top level" |CBB|, i.e. one initialised
+// with |CBB_init| or |CBB_init_fixed|, or a |CBB| set to the zero state with
+// |CBB_zero|.
+OPENSSL_EXPORT void CBB_cleanup(CBB *cbb);
+
+// CBB_finish completes any pending length prefix and sets |*out_data| to a
+// malloced buffer and |*out_len| to the length of that buffer. The caller
+// takes ownership of the buffer and, unless the buffer was fixed with
+// |CBB_init_fixed|, must call |OPENSSL_free| when done.
+//
+// It can only be called on a "top level" |CBB|, i.e. one initialised with
+// |CBB_init| or |CBB_init_fixed|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len);
+
+// CBB_flush causes any pending length prefixes to be written out and any child
+// |CBB| objects of |cbb| to be invalidated. This allows |cbb| to continue to be
+// used after the children go out of scope, e.g. when local |CBB| objects are
+// added as children to a |CBB| that persists after a function returns. This
+// function returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_flush(CBB *cbb);
+
+// CBB_data returns a pointer to the bytes written to |cbb|. It does not flush
+// |cbb|. The pointer is valid until the next operation to |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT const uint8_t *CBB_data(const CBB *cbb);
+
+// CBB_len returns the number of bytes written to |cbb|. It does not flush
+// |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT size_t CBB_len(const CBB *cbb);
+
+// CBB_add_u8_length_prefixed sets |*out_contents| to a new child of |cbb|. The
+// data written to |*out_contents| will be prefixed in |cbb| with an 8-bit
+// length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u16_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 16-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u24_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 24-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_asn1 sets |*out_contents| to a |CBB| into which the contents of an
+// ASN.1 object can be written. The |tag| argument will be used as the tag for
+// the object. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag);
+
+// CBB_add_bytes appends |len| bytes from |data| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len);
+
+// CBB_add_space appends |len| bytes to |cbb| and sets |*out_data| to point to
+// the beginning of that space. The caller must then write |len| bytes of
+// actual contents to |*out_data|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_reserve ensures |cbb| has room for |len| additional bytes and sets
+// |*out_data| to point to the beginning of that space. It returns one on
+// success and zero otherwise. The caller may write up to |len| bytes to
+// |*out_data| and call |CBB_did_write| to complete the write. |*out_data| is
+// valid until the next operation on |cbb| or an ancestor |CBB|.
+OPENSSL_EXPORT int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_did_write advances |cbb| by |len| bytes, assuming the space has been
+// written to by the caller. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_did_write(CBB *cbb, size_t len);
+
+// CBB_add_u8 appends an 8-bit number from |value| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u8(CBB *cbb, uint8_t value);
+
+// CBB_add_u16 appends a 16-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16(CBB *cbb, uint16_t value);
+
+// CBB_add_u16le appends a 16-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16le(CBB *cbb, uint16_t value);
+
+// CBB_add_u24 appends a 24-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u24(CBB *cbb, uint32_t value);
+
+// CBB_add_u32 appends a 32-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32(CBB *cbb, uint32_t value);
+
+// CBB_add_u32le appends a 32-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32le(CBB *cbb, uint32_t value);
+
+// CBB_add_u64 appends a 64-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64(CBB *cbb, uint64_t value);
+
+// CBB_add_u64le appends a 64-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64le(CBB *cbb, uint64_t value);
+
+// CBB_discard_child discards the current unflushed child of |cbb|. Neither the
+// child's contents nor the length prefix will be included in the output.
+OPENSSL_EXPORT void CBB_discard_child(CBB *cbb);
+
+// CBB_add_asn1_uint64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_uint64(CBB *cbb, uint64_t value);
+
+// CBB_add_asn1_int64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_int64(CBB *cbb, int64_t value);
+
+// CBB_add_asn1_octet_string writes an ASN.1 OCTET STRING into |cbb| with the
+// given contents. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data,
+                                             size_t data_len);
+
+// CBB_add_asn1_bool writes an ASN.1 BOOLEAN into |cbb| which is true iff
+// |value| is non-zero.  It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_bool(CBB *cbb, int value);
+
+// CBB_add_asn1_oid_from_text decodes |len| bytes from |text| as an ASCII OID
+// representation, e.g. "1.2.840.113554.4.1.72585", and writes the DER-encoded
+// contents to |cbb|. It returns one on success and zero on malloc failure or if
+// |text| was invalid. It does not include the OBJECT IDENTIFER framing, only
+// the element's contents.
+//
+// This function considers OID strings with components which do not fit in a
+// |uint64_t| to be invalid.
+OPENSSL_EXPORT int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text,
+                                              size_t len);
+
+// CBB_flush_asn1_set_of calls |CBB_flush| on |cbb| and then reorders the
+// contents for a DER-encoded ASN.1 SET OF type. It returns one on success and
+// zero on failure. DER canonicalizes SET OF contents by sorting
+// lexicographically by encoding. Call this function when encoding a SET OF
+// type in an order that is not already known to be canonical.
+//
+// Note a SET type has a slightly different ordering than a SET OF.
+OPENSSL_EXPORT int CBB_flush_asn1_set_of(CBB *cbb);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedCBB = internal::StackAllocated<CBB, void, CBB_zero, CBB_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_BYTESTRING_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.back
new file mode 100644
index 0000000..1f9c879
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.back	
@@ -0,0 +1,561 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_BYTESTRING_H
+#define OPENSSL_HEADER_BYTESTRING_H
+
+#include <openssl/base.h>
+
+#include <openssl/span.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Bytestrings are used for parsing and building TLS and ASN.1 messages.
+//
+// A "CBS" (CRYPTO ByteString) represents a string of bytes in memory and
+// provides utility functions for safely parsing length-prefixed structures
+// like TLS and ASN.1 from it.
+//
+// A "CBB" (CRYPTO ByteBuilder) is a memory buffer that grows as needed and
+// provides utility functions for building length-prefixed messages.
+
+
+// CRYPTO ByteString
+
+struct cbs_st {
+  const uint8_t *data;
+  size_t len;
+
+#if !defined(BORINGSSL_NO_CXX)
+  // Allow implicit conversions to and from bssl::Span<const uint8_t>.
+  cbs_st(bssl::Span<const uint8_t> span)
+      : data(span.data()), len(span.size()) {}
+  operator bssl::Span<const uint8_t>() const {
+    return bssl::MakeConstSpan(data, len);
+  }
+
+  // Defining any constructors requires we explicitly default the others.
+  cbs_st() = default;
+  cbs_st(const cbs_st &) = default;
+#endif
+};
+
+// CBS_init sets |cbs| to point to |data|. It does not take ownership of
+// |data|.
+OPENSSL_EXPORT void CBS_init(CBS *cbs, const uint8_t *data, size_t len);
+
+// CBS_skip advances |cbs| by |len| bytes. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBS_skip(CBS *cbs, size_t len);
+
+// CBS_data returns a pointer to the contents of |cbs|.
+OPENSSL_EXPORT const uint8_t *CBS_data(const CBS *cbs);
+
+// CBS_len returns the number of bytes remaining in |cbs|.
+OPENSSL_EXPORT size_t CBS_len(const CBS *cbs);
+
+// CBS_stow copies the current contents of |cbs| into |*out_ptr| and
+// |*out_len|. If |*out_ptr| is not NULL, the contents are freed with
+// OPENSSL_free. It returns one on success and zero on allocation failure. On
+// success, |*out_ptr| should be freed with OPENSSL_free. If |cbs| is empty,
+// |*out_ptr| will be NULL.
+OPENSSL_EXPORT int CBS_stow(const CBS *cbs, uint8_t **out_ptr, size_t *out_len);
+
+// CBS_strdup copies the current contents of |cbs| into |*out_ptr| as a
+// NUL-terminated C string. If |*out_ptr| is not NULL, the contents are freed
+// with OPENSSL_free. It returns one on success and zero on allocation
+// failure. On success, |*out_ptr| should be freed with OPENSSL_free.
+//
+// NOTE: If |cbs| contains NUL bytes, the string will be truncated. Call
+// |CBS_contains_zero_byte(cbs)| to check for NUL bytes.
+OPENSSL_EXPORT int CBS_strdup(const CBS *cbs, char **out_ptr);
+
+// CBS_contains_zero_byte returns one if the current contents of |cbs| contains
+// a NUL byte and zero otherwise.
+OPENSSL_EXPORT int CBS_contains_zero_byte(const CBS *cbs);
+
+// CBS_mem_equal compares the current contents of |cbs| with the |len| bytes
+// starting at |data|. If they're equal, it returns one, otherwise zero. If the
+// lengths match, it uses a constant-time comparison.
+OPENSSL_EXPORT int CBS_mem_equal(const CBS *cbs, const uint8_t *data,
+                                 size_t len);
+
+// CBS_get_u8 sets |*out| to the next uint8_t from |cbs| and advances |cbs|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_u16 sets |*out| to the next, big-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16(CBS *cbs, uint16_t *out);
+
+// CBS_get_u16le sets |*out| to the next, little-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16le(CBS *cbs, uint16_t *out);
+
+// CBS_get_u24 sets |*out| to the next, big-endian 24-bit value from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32 sets |*out| to the next, big-endian uint32_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32le sets |*out| to the next, little-endian uint32_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32le(CBS *cbs, uint32_t *out);
+
+// CBS_get_u64 sets |*out| to the next, big-endian uint64_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64(CBS *cbs, uint64_t *out);
+
+// CBS_get_u64le sets |*out| to the next, little-endian uint64_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64le(CBS *cbs, uint64_t *out);
+
+// CBS_get_last_u8 sets |*out| to the last uint8_t from |cbs| and shortens
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_last_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_bytes sets |*out| to the next |len| bytes from |cbs| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_bytes(CBS *cbs, CBS *out, size_t len);
+
+// CBS_copy_bytes copies the next |len| bytes from |cbs| to |out| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_copy_bytes(CBS *cbs, uint8_t *out, size_t len);
+
+// CBS_get_u8_length_prefixed sets |*out| to the contents of an 8-bit,
+// length-prefixed value from |cbs| and advances |cbs| over it. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u16_length_prefixed sets |*out| to the contents of a 16-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u24_length_prefixed sets |*out| to the contents of a 24-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24_length_prefixed(CBS *cbs, CBS *out);
+
+
+// Parsing ASN.1
+//
+// |CBS| may be used to parse DER structures. Rather than using a schema
+// compiler, the following functions act on tag-length-value elements in the
+// serialization itself. Thus the caller is responsible for looping over a
+// SEQUENCE, branching on CHOICEs or OPTIONAL fields, checking for trailing
+// data, and handling explict vs. implicit tagging.
+//
+// Tags are represented as |unsigned| values in memory. The upper few bits store
+// the class and constructed bit, and the remaining bits store the tag
+// number. Note this differs from the DER serialization, to support tag numbers
+// beyond 31. Consumers must use the constants defined below to decompose or
+// assemble tags.
+//
+// This library treats an element's constructed bit as part of its tag. In DER,
+// the constructed bit is computable from the type. The constants for universal
+// types have the bit set. Callers must set it correctly for tagged types.
+// Explicitly-tagged types are always constructed, and implicitly-tagged types
+// inherit the underlying type's bit.
+
+// CBS_ASN1_TAG_SHIFT is how much the in-memory representation shifts the class
+// and constructed bits from the DER serialization.
+#define CBS_ASN1_TAG_SHIFT 24
+
+// CBS_ASN1_CONSTRUCTED may be ORed into a tag to set the constructed bit.
+#define CBS_ASN1_CONSTRUCTED (0x20u << CBS_ASN1_TAG_SHIFT)
+
+// The following values specify the tag class and may be ORed into a tag number
+// to produce the final tag. If none is used, the tag will be UNIVERSAL.
+#define CBS_ASN1_UNIVERSAL (0u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_APPLICATION (0x40u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_CONTEXT_SPECIFIC (0x80u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_PRIVATE (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_CLASS_MASK may be ANDed with a tag to query its class. This will
+// give one of the four values above.
+#define CBS_ASN1_CLASS_MASK (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_TAG_NUMBER_MASK may be ANDed with a tag to query its number.
+#define CBS_ASN1_TAG_NUMBER_MASK ((1u << (5 + CBS_ASN1_TAG_SHIFT)) - 1)
+
+// The following values are constants for UNIVERSAL tags. Note these constants
+// include the constructed bit.
+#define CBS_ASN1_BOOLEAN 0x1u
+#define CBS_ASN1_INTEGER 0x2u
+#define CBS_ASN1_BITSTRING 0x3u
+#define CBS_ASN1_OCTETSTRING 0x4u
+#define CBS_ASN1_NULL 0x5u
+#define CBS_ASN1_OBJECT 0x6u
+#define CBS_ASN1_ENUMERATED 0xau
+#define CBS_ASN1_UTF8STRING 0xcu
+#define CBS_ASN1_SEQUENCE (0x10u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_SET (0x11u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_NUMERICSTRING 0x12u
+#define CBS_ASN1_PRINTABLESTRING 0x13u
+#define CBS_ASN1_T61STRING 0x14u
+#define CBS_ASN1_VIDEOTEXSTRING 0x15u
+#define CBS_ASN1_IA5STRING 0x16u
+#define CBS_ASN1_UTCTIME 0x17u
+#define CBS_ASN1_GENERALIZEDTIME 0x18u
+#define CBS_ASN1_GRAPHICSTRING 0x19u
+#define CBS_ASN1_VISIBLESTRING 0x1au
+#define CBS_ASN1_GENERALSTRING 0x1bu
+#define CBS_ASN1_UNIVERSALSTRING 0x1cu
+#define CBS_ASN1_BMPSTRING 0x1eu
+
+// CBS_get_asn1 sets |*out| to the contents of DER-encoded, ASN.1 element (not
+// including tag and length bytes) and advances |cbs| over it. The ASN.1
+// element must match |tag_value|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_get_asn1_element acts like |CBS_get_asn1| but |out| will include the
+// ASN.1 header bytes too.
+OPENSSL_EXPORT int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_peek_asn1_tag looks ahead at the next ASN.1 tag and returns one
+// if the next ASN.1 element on |cbs| would have tag |tag_value|. If
+// |cbs| is empty or the tag does not match, it returns zero. Note: if
+// it returns one, CBS_get_asn1 may still fail if the rest of the
+// element is malformed.
+OPENSSL_EXPORT int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value);
+
+// CBS_get_any_asn1 sets |*out| to contain the next ASN.1 element from |*cbs|
+// (not including tag and length bytes), sets |*out_tag| to the tag number, and
+// advances |*cbs|. It returns one on success and zero on error. Either of |out|
+// and |out_tag| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1(CBS *cbs, CBS *out, unsigned *out_tag);
+
+// CBS_get_any_asn1_element sets |*out| to contain the next ASN.1 element from
+// |*cbs| (including header bytes) and advances |*cbs|. It sets |*out_tag| to
+// the tag number and |*out_header_len| to the length of the ASN.1 header. Each
+// of |out|, |out_tag|, and |out_header_len| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1_element(CBS *cbs, CBS *out,
+                                            unsigned *out_tag,
+                                            size_t *out_header_len);
+
+// CBS_get_any_ber_asn1_element acts the same as |CBS_get_any_asn1_element| but
+// also allows indefinite-length elements to be returned. In that case,
+// |*out_header_len| and |CBS_len(out)| will both be two as only the header is
+// returned, otherwise it behaves the same as the previous function.
+OPENSSL_EXPORT int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out,
+                                                unsigned *out_tag,
+                                                size_t *out_header_len);
+
+// CBS_get_asn1_uint64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being negative, or too large to represent
+// in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out);
+
+// CBS_get_asn1_int64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being too large to represent in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_int64(CBS *cbs, int64_t *out);
+
+// CBS_get_asn1_bool gets an ASN.1 BOOLEAN from |cbs| and sets |*out| to zero
+// or one based on its value. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBS_get_asn1_bool(CBS *cbs, int *out);
+
+// CBS_get_optional_asn1 gets an optional explicitly-tagged element from |cbs|
+// tagged with |tag| and sets |*out| to its contents, or ignores it if |out| is
+// NULL. If present and if |out_present| is not NULL, it sets |*out_present| to
+// one, otherwise zero. It returns one on success, whether or not the element
+// was present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present,
+                                         unsigned tag);
+
+// CBS_get_optional_asn1_octet_string gets an optional
+// explicitly-tagged OCTET STRING from |cbs|. If present, it sets
+// |*out| to the string and |*out_present| to one. Otherwise, it sets
+// |*out| to empty and |*out_present| to zero. |out_present| may be
+// NULL. It returns one on success, whether or not the element was
+// present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out,
+                                                      int *out_present,
+                                                      unsigned tag);
+
+// CBS_get_optional_asn1_uint64 gets an optional explicitly-tagged
+// INTEGER from |cbs|. If present, it sets |*out| to the
+// value. Otherwise, it sets |*out| to |default_value|. It returns one
+// on success, whether or not the element was present, and zero on
+// decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out,
+                                                unsigned tag,
+                                                uint64_t default_value);
+
+// CBS_get_optional_asn1_bool gets an optional, explicitly-tagged BOOLEAN from
+// |cbs|. If present, it sets |*out| to either zero or one, based on the
+// boolean. Otherwise, it sets |*out| to |default_value|. It returns one on
+// success, whether or not the element was present, and zero on decode
+// failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                                              int default_value);
+
+// CBS_is_valid_asn1_bitstring returns one if |cbs| is a valid ASN.1 BIT STRING
+// and zero otherwise.
+OPENSSL_EXPORT int CBS_is_valid_asn1_bitstring(const CBS *cbs);
+
+// CBS_asn1_bitstring_has_bit returns one if |cbs| is a valid ASN.1 BIT STRING
+// and the specified bit is present and set. Otherwise, it returns zero. |bit|
+// is indexed starting from zero.
+OPENSSL_EXPORT int CBS_asn1_bitstring_has_bit(const CBS *cbs, unsigned bit);
+
+// CBS_asn1_oid_to_text interprets |cbs| as DER-encoded ASN.1 OBJECT IDENTIFIER
+// contents (not including the element framing) and returns the ASCII
+// representation (e.g., "1.2.840.113554.4.1.72585") in a newly-allocated
+// string, or NULL on failure. The caller must release the result with
+// |OPENSSL_free|.
+OPENSSL_EXPORT char *CBS_asn1_oid_to_text(const CBS *cbs);
+
+
+// CRYPTO ByteBuilder.
+//
+// |CBB| objects allow one to build length-prefixed serialisations. A |CBB|
+// object is associated with a buffer and new buffers are created with
+// |CBB_init|. Several |CBB| objects can point at the same buffer when a
+// length-prefix is pending, however only a single |CBB| can be 'current' at
+// any one time. For example, if one calls |CBB_add_u8_length_prefixed| then
+// the new |CBB| points at the same buffer as the original. But if the original
+// |CBB| is used then the length prefix is written out and the new |CBB| must
+// not be used again.
+//
+// If one needs to force a length prefix to be written out because a |CBB| is
+// going out of scope, use |CBB_flush|. If an operation on a |CBB| fails, it is
+// in an undefined state and must not be used except to call |CBB_cleanup|.
+
+struct cbb_buffer_st {
+  uint8_t *buf;
+  size_t len;      // The number of valid bytes.
+  size_t cap;      // The size of buf.
+  char can_resize; /* One iff |buf| is owned by this object. If not then |buf|
+                      cannot be resized. */
+  char error;      /* One iff there was an error writing to this CBB. All future
+                      operations will fail. */
+};
+
+struct cbb_st {
+  struct cbb_buffer_st *base;
+  // child points to a child CBB if a length-prefix is pending.
+  CBB *child;
+  // offset is the number of bytes from the start of |base->buf| to this |CBB|'s
+  // pending length prefix.
+  size_t offset;
+  // pending_len_len contains the number of bytes in this |CBB|'s pending
+  // length-prefix, or zero if no length-prefix is pending.
+  uint8_t pending_len_len;
+  char pending_is_asn1;
+  // is_child is true iff this is a child |CBB| (as opposed to a top-level
+  // |CBB|). Top-level objects are valid arguments for |CBB_finish|.
+  char is_child;
+};
+
+// CBB_zero sets an uninitialised |cbb| to the zero state. It must be
+// initialised with |CBB_init| or |CBB_init_fixed| before use, but it is safe to
+// call |CBB_cleanup| without a successful |CBB_init|. This may be used for more
+// uniform cleanup of a |CBB|.
+OPENSSL_EXPORT void CBB_zero(CBB *cbb);
+
+// CBB_init initialises |cbb| with |initial_capacity|. Since a |CBB| grows as
+// needed, the |initial_capacity| is just a hint. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int CBB_init(CBB *cbb, size_t initial_capacity);
+
+// CBB_init_fixed initialises |cbb| to write to |len| bytes at |buf|. Since
+// |buf| cannot grow, trying to write more than |len| bytes will cause CBB
+// functions to fail. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len);
+
+// CBB_cleanup frees all resources owned by |cbb| and other |CBB| objects
+// writing to the same buffer. This should be used in an error case where a
+// serialisation is abandoned.
+//
+// This function can only be called on a "top level" |CBB|, i.e. one initialised
+// with |CBB_init| or |CBB_init_fixed|, or a |CBB| set to the zero state with
+// |CBB_zero|.
+OPENSSL_EXPORT void CBB_cleanup(CBB *cbb);
+
+// CBB_finish completes any pending length prefix and sets |*out_data| to a
+// malloced buffer and |*out_len| to the length of that buffer. The caller
+// takes ownership of the buffer and, unless the buffer was fixed with
+// |CBB_init_fixed|, must call |OPENSSL_free| when done.
+//
+// It can only be called on a "top level" |CBB|, i.e. one initialised with
+// |CBB_init| or |CBB_init_fixed|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len);
+
+// CBB_flush causes any pending length prefixes to be written out and any child
+// |CBB| objects of |cbb| to be invalidated. This allows |cbb| to continue to be
+// used after the children go out of scope, e.g. when local |CBB| objects are
+// added as children to a |CBB| that persists after a function returns. This
+// function returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_flush(CBB *cbb);
+
+// CBB_data returns a pointer to the bytes written to |cbb|. It does not flush
+// |cbb|. The pointer is valid until the next operation to |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT const uint8_t *CBB_data(const CBB *cbb);
+
+// CBB_len returns the number of bytes written to |cbb|. It does not flush
+// |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT size_t CBB_len(const CBB *cbb);
+
+// CBB_add_u8_length_prefixed sets |*out_contents| to a new child of |cbb|. The
+// data written to |*out_contents| will be prefixed in |cbb| with an 8-bit
+// length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u16_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 16-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u24_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 24-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_asn1 sets |*out_contents| to a |CBB| into which the contents of an
+// ASN.1 object can be written. The |tag| argument will be used as the tag for
+// the object. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag);
+
+// CBB_add_bytes appends |len| bytes from |data| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len);
+
+// CBB_add_space appends |len| bytes to |cbb| and sets |*out_data| to point to
+// the beginning of that space. The caller must then write |len| bytes of
+// actual contents to |*out_data|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_reserve ensures |cbb| has room for |len| additional bytes and sets
+// |*out_data| to point to the beginning of that space. It returns one on
+// success and zero otherwise. The caller may write up to |len| bytes to
+// |*out_data| and call |CBB_did_write| to complete the write. |*out_data| is
+// valid until the next operation on |cbb| or an ancestor |CBB|.
+OPENSSL_EXPORT int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_did_write advances |cbb| by |len| bytes, assuming the space has been
+// written to by the caller. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_did_write(CBB *cbb, size_t len);
+
+// CBB_add_u8 appends an 8-bit number from |value| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u8(CBB *cbb, uint8_t value);
+
+// CBB_add_u16 appends a 16-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16(CBB *cbb, uint16_t value);
+
+// CBB_add_u16le appends a 16-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16le(CBB *cbb, uint16_t value);
+
+// CBB_add_u24 appends a 24-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u24(CBB *cbb, uint32_t value);
+
+// CBB_add_u32 appends a 32-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32(CBB *cbb, uint32_t value);
+
+// CBB_add_u32le appends a 32-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32le(CBB *cbb, uint32_t value);
+
+// CBB_add_u64 appends a 64-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64(CBB *cbb, uint64_t value);
+
+// CBB_add_u64le appends a 64-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64le(CBB *cbb, uint64_t value);
+
+// CBB_discard_child discards the current unflushed child of |cbb|. Neither the
+// child's contents nor the length prefix will be included in the output.
+OPENSSL_EXPORT void CBB_discard_child(CBB *cbb);
+
+// CBB_add_asn1_uint64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_uint64(CBB *cbb, uint64_t value);
+
+// CBB_add_asn1_int64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_int64(CBB *cbb, int64_t value);
+
+// CBB_add_asn1_octet_string writes an ASN.1 OCTET STRING into |cbb| with the
+// given contents. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data,
+                                             size_t data_len);
+
+// CBB_add_asn1_bool writes an ASN.1 BOOLEAN into |cbb| which is true iff
+// |value| is non-zero.  It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_bool(CBB *cbb, int value);
+
+// CBB_add_asn1_oid_from_text decodes |len| bytes from |text| as an ASCII OID
+// representation, e.g. "1.2.840.113554.4.1.72585", and writes the DER-encoded
+// contents to |cbb|. It returns one on success and zero on malloc failure or if
+// |text| was invalid. It does not include the OBJECT IDENTIFER framing, only
+// the element's contents.
+//
+// This function considers OID strings with components which do not fit in a
+// |uint64_t| to be invalid.
+OPENSSL_EXPORT int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text,
+                                              size_t len);
+
+// CBB_flush_asn1_set_of calls |CBB_flush| on |cbb| and then reorders the
+// contents for a DER-encoded ASN.1 SET OF type. It returns one on success and
+// zero on failure. DER canonicalizes SET OF contents by sorting
+// lexicographically by encoding. Call this function when encoding a SET OF
+// type in an order that is not already known to be canonical.
+//
+// Note a SET type has a slightly different ordering than a SET OF.
+OPENSSL_EXPORT int CBB_flush_asn1_set_of(CBB *cbb);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedCBB = internal::StackAllocated<CBB, void, CBB_zero, CBB_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_BYTESTRING_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.grpc_back
new file mode 100644
index 0000000..1f9c879
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/bytestring.h.grpc_back	
@@ -0,0 +1,561 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_BYTESTRING_H
+#define OPENSSL_HEADER_BYTESTRING_H
+
+#include <openssl/base.h>
+
+#include <openssl/span.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Bytestrings are used for parsing and building TLS and ASN.1 messages.
+//
+// A "CBS" (CRYPTO ByteString) represents a string of bytes in memory and
+// provides utility functions for safely parsing length-prefixed structures
+// like TLS and ASN.1 from it.
+//
+// A "CBB" (CRYPTO ByteBuilder) is a memory buffer that grows as needed and
+// provides utility functions for building length-prefixed messages.
+
+
+// CRYPTO ByteString
+
+struct cbs_st {
+  const uint8_t *data;
+  size_t len;
+
+#if !defined(BORINGSSL_NO_CXX)
+  // Allow implicit conversions to and from bssl::Span<const uint8_t>.
+  cbs_st(bssl::Span<const uint8_t> span)
+      : data(span.data()), len(span.size()) {}
+  operator bssl::Span<const uint8_t>() const {
+    return bssl::MakeConstSpan(data, len);
+  }
+
+  // Defining any constructors requires we explicitly default the others.
+  cbs_st() = default;
+  cbs_st(const cbs_st &) = default;
+#endif
+};
+
+// CBS_init sets |cbs| to point to |data|. It does not take ownership of
+// |data|.
+OPENSSL_EXPORT void CBS_init(CBS *cbs, const uint8_t *data, size_t len);
+
+// CBS_skip advances |cbs| by |len| bytes. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBS_skip(CBS *cbs, size_t len);
+
+// CBS_data returns a pointer to the contents of |cbs|.
+OPENSSL_EXPORT const uint8_t *CBS_data(const CBS *cbs);
+
+// CBS_len returns the number of bytes remaining in |cbs|.
+OPENSSL_EXPORT size_t CBS_len(const CBS *cbs);
+
+// CBS_stow copies the current contents of |cbs| into |*out_ptr| and
+// |*out_len|. If |*out_ptr| is not NULL, the contents are freed with
+// OPENSSL_free. It returns one on success and zero on allocation failure. On
+// success, |*out_ptr| should be freed with OPENSSL_free. If |cbs| is empty,
+// |*out_ptr| will be NULL.
+OPENSSL_EXPORT int CBS_stow(const CBS *cbs, uint8_t **out_ptr, size_t *out_len);
+
+// CBS_strdup copies the current contents of |cbs| into |*out_ptr| as a
+// NUL-terminated C string. If |*out_ptr| is not NULL, the contents are freed
+// with OPENSSL_free. It returns one on success and zero on allocation
+// failure. On success, |*out_ptr| should be freed with OPENSSL_free.
+//
+// NOTE: If |cbs| contains NUL bytes, the string will be truncated. Call
+// |CBS_contains_zero_byte(cbs)| to check for NUL bytes.
+OPENSSL_EXPORT int CBS_strdup(const CBS *cbs, char **out_ptr);
+
+// CBS_contains_zero_byte returns one if the current contents of |cbs| contains
+// a NUL byte and zero otherwise.
+OPENSSL_EXPORT int CBS_contains_zero_byte(const CBS *cbs);
+
+// CBS_mem_equal compares the current contents of |cbs| with the |len| bytes
+// starting at |data|. If they're equal, it returns one, otherwise zero. If the
+// lengths match, it uses a constant-time comparison.
+OPENSSL_EXPORT int CBS_mem_equal(const CBS *cbs, const uint8_t *data,
+                                 size_t len);
+
+// CBS_get_u8 sets |*out| to the next uint8_t from |cbs| and advances |cbs|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_u16 sets |*out| to the next, big-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16(CBS *cbs, uint16_t *out);
+
+// CBS_get_u16le sets |*out| to the next, little-endian uint16_t from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16le(CBS *cbs, uint16_t *out);
+
+// CBS_get_u24 sets |*out| to the next, big-endian 24-bit value from |cbs| and
+// advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32 sets |*out| to the next, big-endian uint32_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32(CBS *cbs, uint32_t *out);
+
+// CBS_get_u32le sets |*out| to the next, little-endian uint32_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u32le(CBS *cbs, uint32_t *out);
+
+// CBS_get_u64 sets |*out| to the next, big-endian uint64_t value from |cbs|
+// and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64(CBS *cbs, uint64_t *out);
+
+// CBS_get_u64le sets |*out| to the next, little-endian uint64_t value from
+// |cbs| and advances |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u64le(CBS *cbs, uint64_t *out);
+
+// CBS_get_last_u8 sets |*out| to the last uint8_t from |cbs| and shortens
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_last_u8(CBS *cbs, uint8_t *out);
+
+// CBS_get_bytes sets |*out| to the next |len| bytes from |cbs| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_bytes(CBS *cbs, CBS *out, size_t len);
+
+// CBS_copy_bytes copies the next |len| bytes from |cbs| to |out| and advances
+// |cbs|. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_copy_bytes(CBS *cbs, uint8_t *out, size_t len);
+
+// CBS_get_u8_length_prefixed sets |*out| to the contents of an 8-bit,
+// length-prefixed value from |cbs| and advances |cbs| over it. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u8_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u16_length_prefixed sets |*out| to the contents of a 16-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u16_length_prefixed(CBS *cbs, CBS *out);
+
+// CBS_get_u24_length_prefixed sets |*out| to the contents of a 24-bit,
+// big-endian, length-prefixed value from |cbs| and advances |cbs| over it. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CBS_get_u24_length_prefixed(CBS *cbs, CBS *out);
+
+
+// Parsing ASN.1
+//
+// |CBS| may be used to parse DER structures. Rather than using a schema
+// compiler, the following functions act on tag-length-value elements in the
+// serialization itself. Thus the caller is responsible for looping over a
+// SEQUENCE, branching on CHOICEs or OPTIONAL fields, checking for trailing
+// data, and handling explict vs. implicit tagging.
+//
+// Tags are represented as |unsigned| values in memory. The upper few bits store
+// the class and constructed bit, and the remaining bits store the tag
+// number. Note this differs from the DER serialization, to support tag numbers
+// beyond 31. Consumers must use the constants defined below to decompose or
+// assemble tags.
+//
+// This library treats an element's constructed bit as part of its tag. In DER,
+// the constructed bit is computable from the type. The constants for universal
+// types have the bit set. Callers must set it correctly for tagged types.
+// Explicitly-tagged types are always constructed, and implicitly-tagged types
+// inherit the underlying type's bit.
+
+// CBS_ASN1_TAG_SHIFT is how much the in-memory representation shifts the class
+// and constructed bits from the DER serialization.
+#define CBS_ASN1_TAG_SHIFT 24
+
+// CBS_ASN1_CONSTRUCTED may be ORed into a tag to set the constructed bit.
+#define CBS_ASN1_CONSTRUCTED (0x20u << CBS_ASN1_TAG_SHIFT)
+
+// The following values specify the tag class and may be ORed into a tag number
+// to produce the final tag. If none is used, the tag will be UNIVERSAL.
+#define CBS_ASN1_UNIVERSAL (0u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_APPLICATION (0x40u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_CONTEXT_SPECIFIC (0x80u << CBS_ASN1_TAG_SHIFT)
+#define CBS_ASN1_PRIVATE (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_CLASS_MASK may be ANDed with a tag to query its class. This will
+// give one of the four values above.
+#define CBS_ASN1_CLASS_MASK (0xc0u << CBS_ASN1_TAG_SHIFT)
+
+// CBS_ASN1_TAG_NUMBER_MASK may be ANDed with a tag to query its number.
+#define CBS_ASN1_TAG_NUMBER_MASK ((1u << (5 + CBS_ASN1_TAG_SHIFT)) - 1)
+
+// The following values are constants for UNIVERSAL tags. Note these constants
+// include the constructed bit.
+#define CBS_ASN1_BOOLEAN 0x1u
+#define CBS_ASN1_INTEGER 0x2u
+#define CBS_ASN1_BITSTRING 0x3u
+#define CBS_ASN1_OCTETSTRING 0x4u
+#define CBS_ASN1_NULL 0x5u
+#define CBS_ASN1_OBJECT 0x6u
+#define CBS_ASN1_ENUMERATED 0xau
+#define CBS_ASN1_UTF8STRING 0xcu
+#define CBS_ASN1_SEQUENCE (0x10u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_SET (0x11u | CBS_ASN1_CONSTRUCTED)
+#define CBS_ASN1_NUMERICSTRING 0x12u
+#define CBS_ASN1_PRINTABLESTRING 0x13u
+#define CBS_ASN1_T61STRING 0x14u
+#define CBS_ASN1_VIDEOTEXSTRING 0x15u
+#define CBS_ASN1_IA5STRING 0x16u
+#define CBS_ASN1_UTCTIME 0x17u
+#define CBS_ASN1_GENERALIZEDTIME 0x18u
+#define CBS_ASN1_GRAPHICSTRING 0x19u
+#define CBS_ASN1_VISIBLESTRING 0x1au
+#define CBS_ASN1_GENERALSTRING 0x1bu
+#define CBS_ASN1_UNIVERSALSTRING 0x1cu
+#define CBS_ASN1_BMPSTRING 0x1eu
+
+// CBS_get_asn1 sets |*out| to the contents of DER-encoded, ASN.1 element (not
+// including tag and length bytes) and advances |cbs| over it. The ASN.1
+// element must match |tag_value|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int CBS_get_asn1(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_get_asn1_element acts like |CBS_get_asn1| but |out| will include the
+// ASN.1 header bytes too.
+OPENSSL_EXPORT int CBS_get_asn1_element(CBS *cbs, CBS *out, unsigned tag_value);
+
+// CBS_peek_asn1_tag looks ahead at the next ASN.1 tag and returns one
+// if the next ASN.1 element on |cbs| would have tag |tag_value|. If
+// |cbs| is empty or the tag does not match, it returns zero. Note: if
+// it returns one, CBS_get_asn1 may still fail if the rest of the
+// element is malformed.
+OPENSSL_EXPORT int CBS_peek_asn1_tag(const CBS *cbs, unsigned tag_value);
+
+// CBS_get_any_asn1 sets |*out| to contain the next ASN.1 element from |*cbs|
+// (not including tag and length bytes), sets |*out_tag| to the tag number, and
+// advances |*cbs|. It returns one on success and zero on error. Either of |out|
+// and |out_tag| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1(CBS *cbs, CBS *out, unsigned *out_tag);
+
+// CBS_get_any_asn1_element sets |*out| to contain the next ASN.1 element from
+// |*cbs| (including header bytes) and advances |*cbs|. It sets |*out_tag| to
+// the tag number and |*out_header_len| to the length of the ASN.1 header. Each
+// of |out|, |out_tag|, and |out_header_len| may be NULL to ignore the value.
+OPENSSL_EXPORT int CBS_get_any_asn1_element(CBS *cbs, CBS *out,
+                                            unsigned *out_tag,
+                                            size_t *out_header_len);
+
+// CBS_get_any_ber_asn1_element acts the same as |CBS_get_any_asn1_element| but
+// also allows indefinite-length elements to be returned. In that case,
+// |*out_header_len| and |CBS_len(out)| will both be two as only the header is
+// returned, otherwise it behaves the same as the previous function.
+OPENSSL_EXPORT int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out,
+                                                unsigned *out_tag,
+                                                size_t *out_header_len);
+
+// CBS_get_asn1_uint64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being negative, or too large to represent
+// in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_uint64(CBS *cbs, uint64_t *out);
+
+// CBS_get_asn1_int64 gets an ASN.1 INTEGER from |cbs| using |CBS_get_asn1|
+// and sets |*out| to its value. It returns one on success and zero on error,
+// where error includes the integer being too large to represent in 64 bits.
+OPENSSL_EXPORT int CBS_get_asn1_int64(CBS *cbs, int64_t *out);
+
+// CBS_get_asn1_bool gets an ASN.1 BOOLEAN from |cbs| and sets |*out| to zero
+// or one based on its value. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBS_get_asn1_bool(CBS *cbs, int *out);
+
+// CBS_get_optional_asn1 gets an optional explicitly-tagged element from |cbs|
+// tagged with |tag| and sets |*out| to its contents, or ignores it if |out| is
+// NULL. If present and if |out_present| is not NULL, it sets |*out_present| to
+// one, otherwise zero. It returns one on success, whether or not the element
+// was present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1(CBS *cbs, CBS *out, int *out_present,
+                                         unsigned tag);
+
+// CBS_get_optional_asn1_octet_string gets an optional
+// explicitly-tagged OCTET STRING from |cbs|. If present, it sets
+// |*out| to the string and |*out_present| to one. Otherwise, it sets
+// |*out| to empty and |*out_present| to zero. |out_present| may be
+// NULL. It returns one on success, whether or not the element was
+// present, and zero on decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_octet_string(CBS *cbs, CBS *out,
+                                                      int *out_present,
+                                                      unsigned tag);
+
+// CBS_get_optional_asn1_uint64 gets an optional explicitly-tagged
+// INTEGER from |cbs|. If present, it sets |*out| to the
+// value. Otherwise, it sets |*out| to |default_value|. It returns one
+// on success, whether or not the element was present, and zero on
+// decode failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_uint64(CBS *cbs, uint64_t *out,
+                                                unsigned tag,
+                                                uint64_t default_value);
+
+// CBS_get_optional_asn1_bool gets an optional, explicitly-tagged BOOLEAN from
+// |cbs|. If present, it sets |*out| to either zero or one, based on the
+// boolean. Otherwise, it sets |*out| to |default_value|. It returns one on
+// success, whether or not the element was present, and zero on decode
+// failure.
+OPENSSL_EXPORT int CBS_get_optional_asn1_bool(CBS *cbs, int *out, unsigned tag,
+                                              int default_value);
+
+// CBS_is_valid_asn1_bitstring returns one if |cbs| is a valid ASN.1 BIT STRING
+// and zero otherwise.
+OPENSSL_EXPORT int CBS_is_valid_asn1_bitstring(const CBS *cbs);
+
+// CBS_asn1_bitstring_has_bit returns one if |cbs| is a valid ASN.1 BIT STRING
+// and the specified bit is present and set. Otherwise, it returns zero. |bit|
+// is indexed starting from zero.
+OPENSSL_EXPORT int CBS_asn1_bitstring_has_bit(const CBS *cbs, unsigned bit);
+
+// CBS_asn1_oid_to_text interprets |cbs| as DER-encoded ASN.1 OBJECT IDENTIFIER
+// contents (not including the element framing) and returns the ASCII
+// representation (e.g., "1.2.840.113554.4.1.72585") in a newly-allocated
+// string, or NULL on failure. The caller must release the result with
+// |OPENSSL_free|.
+OPENSSL_EXPORT char *CBS_asn1_oid_to_text(const CBS *cbs);
+
+
+// CRYPTO ByteBuilder.
+//
+// |CBB| objects allow one to build length-prefixed serialisations. A |CBB|
+// object is associated with a buffer and new buffers are created with
+// |CBB_init|. Several |CBB| objects can point at the same buffer when a
+// length-prefix is pending, however only a single |CBB| can be 'current' at
+// any one time. For example, if one calls |CBB_add_u8_length_prefixed| then
+// the new |CBB| points at the same buffer as the original. But if the original
+// |CBB| is used then the length prefix is written out and the new |CBB| must
+// not be used again.
+//
+// If one needs to force a length prefix to be written out because a |CBB| is
+// going out of scope, use |CBB_flush|. If an operation on a |CBB| fails, it is
+// in an undefined state and must not be used except to call |CBB_cleanup|.
+
+struct cbb_buffer_st {
+  uint8_t *buf;
+  size_t len;      // The number of valid bytes.
+  size_t cap;      // The size of buf.
+  char can_resize; /* One iff |buf| is owned by this object. If not then |buf|
+                      cannot be resized. */
+  char error;      /* One iff there was an error writing to this CBB. All future
+                      operations will fail. */
+};
+
+struct cbb_st {
+  struct cbb_buffer_st *base;
+  // child points to a child CBB if a length-prefix is pending.
+  CBB *child;
+  // offset is the number of bytes from the start of |base->buf| to this |CBB|'s
+  // pending length prefix.
+  size_t offset;
+  // pending_len_len contains the number of bytes in this |CBB|'s pending
+  // length-prefix, or zero if no length-prefix is pending.
+  uint8_t pending_len_len;
+  char pending_is_asn1;
+  // is_child is true iff this is a child |CBB| (as opposed to a top-level
+  // |CBB|). Top-level objects are valid arguments for |CBB_finish|.
+  char is_child;
+};
+
+// CBB_zero sets an uninitialised |cbb| to the zero state. It must be
+// initialised with |CBB_init| or |CBB_init_fixed| before use, but it is safe to
+// call |CBB_cleanup| without a successful |CBB_init|. This may be used for more
+// uniform cleanup of a |CBB|.
+OPENSSL_EXPORT void CBB_zero(CBB *cbb);
+
+// CBB_init initialises |cbb| with |initial_capacity|. Since a |CBB| grows as
+// needed, the |initial_capacity| is just a hint. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int CBB_init(CBB *cbb, size_t initial_capacity);
+
+// CBB_init_fixed initialises |cbb| to write to |len| bytes at |buf|. Since
+// |buf| cannot grow, trying to write more than |len| bytes will cause CBB
+// functions to fail. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_init_fixed(CBB *cbb, uint8_t *buf, size_t len);
+
+// CBB_cleanup frees all resources owned by |cbb| and other |CBB| objects
+// writing to the same buffer. This should be used in an error case where a
+// serialisation is abandoned.
+//
+// This function can only be called on a "top level" |CBB|, i.e. one initialised
+// with |CBB_init| or |CBB_init_fixed|, or a |CBB| set to the zero state with
+// |CBB_zero|.
+OPENSSL_EXPORT void CBB_cleanup(CBB *cbb);
+
+// CBB_finish completes any pending length prefix and sets |*out_data| to a
+// malloced buffer and |*out_len| to the length of that buffer. The caller
+// takes ownership of the buffer and, unless the buffer was fixed with
+// |CBB_init_fixed|, must call |OPENSSL_free| when done.
+//
+// It can only be called on a "top level" |CBB|, i.e. one initialised with
+// |CBB_init| or |CBB_init_fixed|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_finish(CBB *cbb, uint8_t **out_data, size_t *out_len);
+
+// CBB_flush causes any pending length prefixes to be written out and any child
+// |CBB| objects of |cbb| to be invalidated. This allows |cbb| to continue to be
+// used after the children go out of scope, e.g. when local |CBB| objects are
+// added as children to a |CBB| that persists after a function returns. This
+// function returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_flush(CBB *cbb);
+
+// CBB_data returns a pointer to the bytes written to |cbb|. It does not flush
+// |cbb|. The pointer is valid until the next operation to |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT const uint8_t *CBB_data(const CBB *cbb);
+
+// CBB_len returns the number of bytes written to |cbb|. It does not flush
+// |cbb|.
+//
+// To avoid unfinalized length prefixes, it is a fatal error to call this on a
+// CBB with any active children.
+OPENSSL_EXPORT size_t CBB_len(const CBB *cbb);
+
+// CBB_add_u8_length_prefixed sets |*out_contents| to a new child of |cbb|. The
+// data written to |*out_contents| will be prefixed in |cbb| with an 8-bit
+// length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u8_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u16_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 16-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u16_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_u24_length_prefixed sets |*out_contents| to a new child of |cbb|.
+// The data written to |*out_contents| will be prefixed in |cbb| with a 24-bit,
+// big-endian length. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_u24_length_prefixed(CBB *cbb, CBB *out_contents);
+
+// CBB_add_asn1 sets |*out_contents| to a |CBB| into which the contents of an
+// ASN.1 object can be written. The |tag| argument will be used as the tag for
+// the object. It returns one on success or zero on error.
+OPENSSL_EXPORT int CBB_add_asn1(CBB *cbb, CBB *out_contents, unsigned tag);
+
+// CBB_add_bytes appends |len| bytes from |data| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_bytes(CBB *cbb, const uint8_t *data, size_t len);
+
+// CBB_add_space appends |len| bytes to |cbb| and sets |*out_data| to point to
+// the beginning of that space. The caller must then write |len| bytes of
+// actual contents to |*out_data|. It returns one on success and zero
+// otherwise.
+OPENSSL_EXPORT int CBB_add_space(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_reserve ensures |cbb| has room for |len| additional bytes and sets
+// |*out_data| to point to the beginning of that space. It returns one on
+// success and zero otherwise. The caller may write up to |len| bytes to
+// |*out_data| and call |CBB_did_write| to complete the write. |*out_data| is
+// valid until the next operation on |cbb| or an ancestor |CBB|.
+OPENSSL_EXPORT int CBB_reserve(CBB *cbb, uint8_t **out_data, size_t len);
+
+// CBB_did_write advances |cbb| by |len| bytes, assuming the space has been
+// written to by the caller. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_did_write(CBB *cbb, size_t len);
+
+// CBB_add_u8 appends an 8-bit number from |value| to |cbb|. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u8(CBB *cbb, uint8_t value);
+
+// CBB_add_u16 appends a 16-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16(CBB *cbb, uint16_t value);
+
+// CBB_add_u16le appends a 16-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u16le(CBB *cbb, uint16_t value);
+
+// CBB_add_u24 appends a 24-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u24(CBB *cbb, uint32_t value);
+
+// CBB_add_u32 appends a 32-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32(CBB *cbb, uint32_t value);
+
+// CBB_add_u32le appends a 32-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u32le(CBB *cbb, uint32_t value);
+
+// CBB_add_u64 appends a 64-bit, big-endian number from |value| to |cbb|. It
+// returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64(CBB *cbb, uint64_t value);
+
+// CBB_add_u64le appends a 64-bit, little-endian number from |value| to |cbb|.
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int CBB_add_u64le(CBB *cbb, uint64_t value);
+
+// CBB_discard_child discards the current unflushed child of |cbb|. Neither the
+// child's contents nor the length prefix will be included in the output.
+OPENSSL_EXPORT void CBB_discard_child(CBB *cbb);
+
+// CBB_add_asn1_uint64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_uint64(CBB *cbb, uint64_t value);
+
+// CBB_add_asn1_int64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
+// and writes |value| in its contents. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int CBB_add_asn1_int64(CBB *cbb, int64_t value);
+
+// CBB_add_asn1_octet_string writes an ASN.1 OCTET STRING into |cbb| with the
+// given contents. It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_octet_string(CBB *cbb, const uint8_t *data,
+                                             size_t data_len);
+
+// CBB_add_asn1_bool writes an ASN.1 BOOLEAN into |cbb| which is true iff
+// |value| is non-zero.  It returns one on success and zero on error.
+OPENSSL_EXPORT int CBB_add_asn1_bool(CBB *cbb, int value);
+
+// CBB_add_asn1_oid_from_text decodes |len| bytes from |text| as an ASCII OID
+// representation, e.g. "1.2.840.113554.4.1.72585", and writes the DER-encoded
+// contents to |cbb|. It returns one on success and zero on malloc failure or if
+// |text| was invalid. It does not include the OBJECT IDENTIFER framing, only
+// the element's contents.
+//
+// This function considers OID strings with components which do not fit in a
+// |uint64_t| to be invalid.
+OPENSSL_EXPORT int CBB_add_asn1_oid_from_text(CBB *cbb, const char *text,
+                                              size_t len);
+
+// CBB_flush_asn1_set_of calls |CBB_flush| on |cbb| and then reorders the
+// contents for a DER-encoded ASN.1 SET OF type. It returns one on success and
+// zero on failure. DER canonicalizes SET OF contents by sorting
+// lexicographically by encoding. Call this function when encoding a SET OF
+// type in an order that is not already known to be canonical.
+//
+// Note a SET type has a slightly different ordering than a SET OF.
+OPENSSL_EXPORT int CBB_flush_asn1_set_of(CBB *cbb);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+using ScopedCBB = internal::StackAllocated<CBB, void, CBB_zero, CBB_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_BYTESTRING_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h
new file mode 100644
index 0000000..95d4f1b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CAST_H
+#define OPENSSL_HEADER_CAST_H
+
+#include <openssl_grpc/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define CAST_ENCRYPT 1
+#define CAST_DECRYPT 0
+
+#define CAST_BLOCK 8
+#define CAST_KEY_LENGTH 16
+
+typedef struct cast_key_st {
+  uint32_t data[32];
+  int short_key;  // Use reduced rounds for short key
+} CAST_KEY;
+
+OPENSSL_EXPORT void CAST_set_key(CAST_KEY *key, size_t len,
+                                 const uint8_t *data);
+OPENSSL_EXPORT void CAST_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                     const CAST_KEY *key, int enc);
+OPENSSL_EXPORT void CAST_encrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_decrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t length, const CAST_KEY *ks,
+                                     uint8_t *iv, int enc);
+
+OPENSSL_EXPORT void CAST_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t length, const CAST_KEY *schedule,
+                                       uint8_t *ivec, int *num, int enc);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_CAST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.back
new file mode 100644
index 0000000..1a0f82d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.back	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CAST_H
+#define OPENSSL_HEADER_CAST_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define CAST_ENCRYPT 1
+#define CAST_DECRYPT 0
+
+#define CAST_BLOCK 8
+#define CAST_KEY_LENGTH 16
+
+typedef struct cast_key_st {
+  uint32_t data[32];
+  int short_key;  // Use reduced rounds for short key
+} CAST_KEY;
+
+OPENSSL_EXPORT void CAST_set_key(CAST_KEY *key, size_t len,
+                                 const uint8_t *data);
+OPENSSL_EXPORT void CAST_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                     const CAST_KEY *key, int enc);
+OPENSSL_EXPORT void CAST_encrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_decrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t length, const CAST_KEY *ks,
+                                     uint8_t *iv, int enc);
+
+OPENSSL_EXPORT void CAST_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t length, const CAST_KEY *schedule,
+                                       uint8_t *ivec, int *num, int enc);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_CAST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.grpc_back
new file mode 100644
index 0000000..1a0f82d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cast.h.grpc_back	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CAST_H
+#define OPENSSL_HEADER_CAST_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define CAST_ENCRYPT 1
+#define CAST_DECRYPT 0
+
+#define CAST_BLOCK 8
+#define CAST_KEY_LENGTH 16
+
+typedef struct cast_key_st {
+  uint32_t data[32];
+  int short_key;  // Use reduced rounds for short key
+} CAST_KEY;
+
+OPENSSL_EXPORT void CAST_set_key(CAST_KEY *key, size_t len,
+                                 const uint8_t *data);
+OPENSSL_EXPORT void CAST_ecb_encrypt(const uint8_t *in, uint8_t *out,
+                                     const CAST_KEY *key, int enc);
+OPENSSL_EXPORT void CAST_encrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_decrypt(uint32_t *data, const CAST_KEY *key);
+OPENSSL_EXPORT void CAST_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t length, const CAST_KEY *ks,
+                                     uint8_t *iv, int enc);
+
+OPENSSL_EXPORT void CAST_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                       size_t length, const CAST_KEY *schedule,
+                                       uint8_t *ivec, int *num, int enc);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif  // OPENSSL_HEADER_CAST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h
new file mode 100644
index 0000000..18a97c3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h	
@@ -0,0 +1,41 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_H
+#define OPENSSL_HEADER_CHACHA_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// ChaCha20.
+//
+// ChaCha20 is a stream cipher. See https://tools.ietf.org/html/rfc7539.
+
+
+// CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
+// nonce and writes the result to |out|. If |in| and |out| alias, they must be
+// equal. The initial block counter is specified by |counter|.
+OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
+                                     size_t in_len, const uint8_t key[32],
+                                     const uint8_t nonce[12], uint32_t counter);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CHACHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.back
new file mode 100644
index 0000000..684fc5b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.back	
@@ -0,0 +1,41 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_H
+#define OPENSSL_HEADER_CHACHA_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// ChaCha20.
+//
+// ChaCha20 is a stream cipher. See https://tools.ietf.org/html/rfc7539.
+
+
+// CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
+// nonce and writes the result to |out|. If |in| and |out| alias, they must be
+// equal. The initial block counter is specified by |counter|.
+OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
+                                     size_t in_len, const uint8_t key[32],
+                                     const uint8_t nonce[12], uint32_t counter);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CHACHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.grpc_back
new file mode 100644
index 0000000..684fc5b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/chacha.h.grpc_back	
@@ -0,0 +1,41 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CHACHA_H
+#define OPENSSL_HEADER_CHACHA_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// ChaCha20.
+//
+// ChaCha20 is a stream cipher. See https://tools.ietf.org/html/rfc7539.
+
+
+// CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
+// nonce and writes the result to |out|. If |in| and |out| alias, they must be
+// equal. The initial block counter is specified by |counter|.
+OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
+                                     size_t in_len, const uint8_t key[32],
+                                     const uint8_t nonce[12], uint32_t counter);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CHACHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h
new file mode 100644
index 0000000..8d686de
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h	
@@ -0,0 +1,638 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_H
+#define OPENSSL_HEADER_CIPHER_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Ciphers.
+
+
+// Cipher primitives.
+//
+// The following functions return |EVP_CIPHER| objects that implement the named
+// cipher algorithm.
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc4(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_cbc(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ofb(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ofb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_xts(void);
+
+// EVP_enc_null returns a 'cipher' that passes plaintext through as
+// ciphertext.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_enc_null(void);
+
+// EVP_rc2_cbc returns a cipher that implements 128-bit RC2 in CBC mode.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc2_cbc(void);
+
+// EVP_rc2_40_cbc returns a cipher that implements 40-bit RC2 in CBC mode. This
+// is obviously very, very weak and is included only in order to read PKCS#12
+// files, which often encrypt the certificate chain using this cipher. It is
+// deliberately not exported.
+const EVP_CIPHER *EVP_rc2_40_cbc(void);
+
+// EVP_get_cipherbynid returns the cipher corresponding to the given NID, or
+// NULL if no such cipher is known.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbynid(int nid);
+
+
+// Cipher context allocation.
+//
+// An |EVP_CIPHER_CTX| represents the state of an encryption or decryption in
+// progress.
+
+// EVP_CIPHER_CTX_init initialises an, already allocated, |EVP_CIPHER_CTX|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_new allocates a fresh |EVP_CIPHER_CTX|, calls
+// |EVP_CIPHER_CTX_init| and returns it, or NULL on allocation failure.
+OPENSSL_EXPORT EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
+
+// EVP_CIPHER_CTX_cleanup frees any memory referenced by |ctx|. It returns
+// one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_free calls |EVP_CIPHER_CTX_cleanup| on |ctx| and then frees
+// |ctx| itself.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_copy sets |out| to be a duplicate of the current state of
+// |in|. The |out| argument must have been previously initialised.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out,
+                                       const EVP_CIPHER_CTX *in);
+
+// EVP_CIPHER_CTX_reset calls |EVP_CIPHER_CTX_cleanup| followed by
+// |EVP_CIPHER_CTX_init| and returns one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx);
+
+
+// Cipher context configuration.
+
+// EVP_CipherInit_ex configures |ctx| for a fresh encryption (or decryption, if
+// |enc| is zero) operation using |cipher|. If |ctx| has been previously
+// configured with a cipher then |cipher|, |key| and |iv| may be |NULL| and
+// |enc| may be -1 to reuse the previous values. The operation will use |key|
+// as the key and |iv| as the IV (if any). These should have the correct
+// lengths given by |EVP_CIPHER_key_length| and |EVP_CIPHER_iv_length|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,
+                                     const EVP_CIPHER *cipher, ENGINE *engine,
+                                     const uint8_t *key, const uint8_t *iv,
+                                     int enc);
+
+// EVP_EncryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+// EVP_DecryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+
+// Cipher operations.
+
+// EVP_EncryptUpdate encrypts |in_len| bytes from |in| to |out|. The number
+// of output bytes may be up to |in_len| plus the block length minus one and
+// |out| must have sufficient space. The number of bytes actually output is
+// written to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_EncryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then standard padding is applied to create the final block. If
+// padding is disabled (with |EVP_CIPHER_CTX_set_padding|) then any partial
+// block remaining will cause an error. The function returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                       int *out_len);
+
+// EVP_DecryptUpdate decrypts |in_len| bytes from |in| to |out|. The number of
+// output bytes may be up to |in_len| plus the block length minus one and |out|
+// must have sufficient space. The number of bytes actually output is written
+// to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_DecryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then padding is removed from the final block.
+//
+// WARNING: it is unsafe to call this function with unauthenticated
+// ciphertext if padding is enabled.
+OPENSSL_EXPORT int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                                       int *out_len);
+
+// EVP_Cipher performs a one-shot encryption/decryption operation. No partial
+// blocks are maintained between calls. However, any internal cipher state is
+// still updated. For CBC-mode ciphers, the IV is updated to the final
+// ciphertext block. For stream ciphers, the stream is advanced past the bytes
+// used. It returns one on success and zero otherwise, unless |EVP_CIPHER_flags|
+// has |EVP_CIPH_FLAG_CUSTOM_CIPHER| set. Then it returns the number of bytes
+// written or -1 on error.
+//
+// WARNING: this differs from the usual return value convention when using
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|.
+//
+// TODO(davidben): The normal ciphers currently never fail, even if, e.g.,
+// |in_len| is not a multiple of the block size for CBC-mode decryption. The
+// input just gets rounded up while the output gets truncated. This should
+// either be officially documented or fail.
+OPENSSL_EXPORT int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len);
+
+// EVP_CipherUpdate calls either |EVP_EncryptUpdate| or |EVP_DecryptUpdate|
+// depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    int in_len);
+
+// EVP_CipherFinal_ex calls either |EVP_EncryptFinal_ex| or
+// |EVP_DecryptFinal_ex| depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                      int *out_len);
+
+
+// Cipher context accessors.
+
+// EVP_CIPHER_CTX_cipher returns the |EVP_CIPHER| underlying |ctx|, or NULL if
+// none has been set.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_CIPHER_CTX_cipher(
+    const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_nid returns a NID identifying the |EVP_CIPHER| underlying
+// |ctx| (e.g. |NID_aes_128_gcm|). It will crash if no cipher has been
+// configured.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_encrypting returns one if |ctx| is configured for encryption
+// and zero otherwise.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_block_size returns the block size, in bytes, of the cipher
+// underlying |ctx|, or one if the cipher is a stream cipher. It will crash if
+// no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_key_length returns the key size, in bytes, of the cipher
+// underlying |ctx| or zero if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_iv_length returns the IV size, in bytes, of the cipher
+// underlying |ctx|. It will crash if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_get_app_data returns the opaque, application data pointer for
+// |ctx|, or NULL if none has been set.
+OPENSSL_EXPORT void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_set_app_data sets the opaque, application data pointer for
+// |ctx| to |data|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx,
+                                                void *data);
+
+// EVP_CIPHER_CTX_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_mode returns one of the |EVP_CIPH_*| cipher mode values
+// enumerated below. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_ctrl is an |ioctl| like function. The |command| argument
+// should be one of the |EVP_CTRL_*| values. The |arg| and |ptr| arguments are
+// specific to the command in question.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command,
+                                       int arg, void *ptr);
+
+// EVP_CIPHER_CTX_set_padding sets whether padding is enabled for |ctx| and
+// returns one. Pass a non-zero |pad| to enable padding (the default) or zero
+// to disable.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad);
+
+// EVP_CIPHER_CTX_set_key_length sets the key length for |ctx|. This is only
+// valid for ciphers that can take a variable length key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *ctx,
+                                                 unsigned key_len);
+
+
+// Cipher accessors.
+
+// EVP_CIPHER_nid returns a NID identifying |cipher|. (For example,
+// |NID_aes_128_gcm|.)
+OPENSSL_EXPORT int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_block_size returns the block size, in bytes, for |cipher|, or one
+// if |cipher| is a stream cipher.
+OPENSSL_EXPORT unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_key_length returns the key size, in bytes, for |cipher|. If
+// |cipher| can take a variable key length then this function returns the
+// default key length and |EVP_CIPHER_flags| will return a value with
+// |EVP_CIPH_VARIABLE_LENGTH| set.
+OPENSSL_EXPORT unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_iv_length returns the IV size, in bytes, of |cipher|, or zero if
+// |cipher| doesn't take an IV.
+OPENSSL_EXPORT unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_mode returns one of the cipher mode values enumerated below.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher);
+
+
+// Key derivation.
+
+// EVP_BytesToKey generates a key and IV for the cipher |type| by iterating
+// |md| |count| times using |data| and |salt|. On entry, the |key| and |iv|
+// buffers must have enough space to hold a key and IV for |type|. It returns
+// the length of the key on success or zero on error.
+OPENSSL_EXPORT int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+                                  const uint8_t *salt, const uint8_t *data,
+                                  size_t data_len, unsigned count, uint8_t *key,
+                                  uint8_t *iv);
+
+
+// Cipher modes (for |EVP_CIPHER_mode|).
+
+#define EVP_CIPH_STREAM_CIPHER 0x0
+#define EVP_CIPH_ECB_MODE 0x1
+#define EVP_CIPH_CBC_MODE 0x2
+#define EVP_CIPH_CFB_MODE 0x3
+#define EVP_CIPH_OFB_MODE 0x4
+#define EVP_CIPH_CTR_MODE 0x5
+#define EVP_CIPH_GCM_MODE 0x6
+#define EVP_CIPH_XTS_MODE 0x7
+
+
+// Cipher flags (for |EVP_CIPHER_flags|).
+
+// EVP_CIPH_VARIABLE_LENGTH indicates that the cipher takes a variable length
+// key.
+#define EVP_CIPH_VARIABLE_LENGTH 0x40
+
+// EVP_CIPH_ALWAYS_CALL_INIT indicates that the |init| function for the cipher
+// should always be called when initialising a new operation, even if the key
+// is NULL to indicate that the same key is being used.
+#define EVP_CIPH_ALWAYS_CALL_INIT 0x80
+
+// EVP_CIPH_CUSTOM_IV indicates that the cipher manages the IV itself rather
+// than keeping it in the |iv| member of |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CUSTOM_IV 0x100
+
+// EVP_CIPH_CTRL_INIT indicates that EVP_CTRL_INIT should be used when
+// initialising an |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CTRL_INIT 0x200
+
+// EVP_CIPH_FLAG_CUSTOM_CIPHER indicates that the cipher manages blocking
+// itself. This causes EVP_(En|De)crypt_ex to be simple wrapper functions.
+#define EVP_CIPH_FLAG_CUSTOM_CIPHER 0x400
+
+// EVP_CIPH_FLAG_AEAD_CIPHER specifies that the cipher is an AEAD. This is an
+// older version of the proper AEAD interface. See aead.h for the current
+// one.
+#define EVP_CIPH_FLAG_AEAD_CIPHER 0x800
+
+// EVP_CIPH_CUSTOM_COPY indicates that the |ctrl| callback should be called
+// with |EVP_CTRL_COPY| at the end of normal |EVP_CIPHER_CTX_copy|
+// processing.
+#define EVP_CIPH_CUSTOM_COPY 0x1000
+
+
+// Deprecated functions
+
+// EVP_CipherInit acts like EVP_CipherInit_ex except that |EVP_CIPHER_CTX_init|
+// is called on |cipher| first, if |cipher| is not NULL.
+OPENSSL_EXPORT int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                                  const uint8_t *key, const uint8_t *iv,
+                                  int enc);
+
+// EVP_EncryptInit calls |EVP_CipherInit| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_DecryptInit calls |EVP_CipherInit| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_add_cipher_alias does nothing and returns one.
+OPENSSL_EXPORT int EVP_add_cipher_alias(const char *a, const char *b);
+
+// EVP_get_cipherbyname returns an |EVP_CIPHER| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
+
+// These AEADs are deprecated AES-GCM implementations that set
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|. Use |EVP_aead_aes_128_gcm| and
+// |EVP_aead_aes_256_gcm| instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_gcm(void);
+
+// These are deprecated, 192-bit version of AES.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ofb(void);
+
+// EVP_des_ede3_ecb is an alias for |EVP_des_ede3|. Use the former instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_ecb(void);
+
+// EVP_aes_128_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cfb128(void);
+
+// EVP_aes_256_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cfb128(void);
+
+// EVP_bf_ecb is Blowfish in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_ecb(void);
+
+// EVP_bf_cbc is Blowfish in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cbc(void);
+
+// EVP_bf_cfb is Blowfish in 64-bit CFB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cfb(void);
+
+// EVP_cast5_ecb is CAST5 in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_ecb(void);
+
+// EVP_cast5_cbc is CAST5 in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_cbc(void);
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define EVP_CIPH_CCM_MODE (-1)
+#define EVP_CIPH_OCB_MODE (-2)
+#define EVP_CIPH_WRAP_MODE (-3)
+#define EVP_CIPHER_CTX_FLAG_WRAP_ALLOW 0
+
+// EVP_CIPHER_CTX_set_flags does nothing.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx,
+                                             uint32_t flags);
+
+
+// Private functions.
+
+// EVP_CIPH_NO_PADDING disables padding in block ciphers.
+#define EVP_CIPH_NO_PADDING 0x800
+
+// The following are |EVP_CIPHER_CTX_ctrl| commands.
+#define EVP_CTRL_INIT 0x0
+#define EVP_CTRL_SET_KEY_LENGTH 0x1
+#define EVP_CTRL_GET_RC2_KEY_BITS 0x2
+#define EVP_CTRL_SET_RC2_KEY_BITS 0x3
+#define EVP_CTRL_GET_RC5_ROUNDS 0x4
+#define EVP_CTRL_SET_RC5_ROUNDS 0x5
+#define EVP_CTRL_RAND_KEY 0x6
+#define EVP_CTRL_PBE_PRF_NID 0x7
+#define EVP_CTRL_COPY 0x8
+#define EVP_CTRL_AEAD_SET_IVLEN 0x9
+#define EVP_CTRL_AEAD_GET_TAG 0x10
+#define EVP_CTRL_AEAD_SET_TAG 0x11
+#define EVP_CTRL_AEAD_SET_IV_FIXED 0x12
+#define EVP_CTRL_GCM_IV_GEN 0x13
+#define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
+// EVP_CTRL_GCM_SET_IV_INV sets the GCM invocation field, decrypt only
+#define EVP_CTRL_GCM_SET_IV_INV 0x18
+
+// The following constants are unused.
+#define EVP_GCM_TLS_FIXED_IV_LEN 4
+#define EVP_GCM_TLS_EXPLICIT_IV_LEN 8
+#define EVP_GCM_TLS_TAG_LEN 16
+
+// The following are legacy aliases for AEAD |EVP_CIPHER_CTX_ctrl| values.
+#define EVP_CTRL_GCM_SET_IVLEN EVP_CTRL_AEAD_SET_IVLEN
+#define EVP_CTRL_GCM_GET_TAG EVP_CTRL_AEAD_GET_TAG
+#define EVP_CTRL_GCM_SET_TAG EVP_CTRL_AEAD_SET_TAG
+#define EVP_CTRL_GCM_SET_IV_FIXED EVP_CTRL_AEAD_SET_IV_FIXED
+
+#define EVP_MAX_KEY_LENGTH 64
+#define EVP_MAX_IV_LENGTH 16
+#define EVP_MAX_BLOCK_LENGTH 32
+
+struct evp_cipher_ctx_st {
+  // cipher contains the underlying cipher for this context.
+  const EVP_CIPHER *cipher;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;      // application stuff
+
+  // cipher_data points to the |cipher| specific state.
+  void *cipher_data;
+
+  // key_len contains the length of the key, which may differ from
+  // |cipher->key_len| if the cipher can take a variable key length.
+  unsigned key_len;
+
+  // encrypt is one if encrypting and zero if decrypting.
+  int encrypt;
+
+  // flags contains the OR of zero or more |EVP_CIPH_*| flags, above.
+  uint32_t flags;
+
+  // oiv contains the original IV value.
+  uint8_t oiv[EVP_MAX_IV_LENGTH];
+
+  // iv contains the current IV value, which may have been updated.
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+
+  // buf contains a partial block which is used by, for example, CTR mode to
+  // store unused keystream bytes.
+  uint8_t buf[EVP_MAX_BLOCK_LENGTH];
+
+  // buf_len contains the number of bytes of a partial block contained in
+  // |buf|.
+  int buf_len;
+
+  // num contains the number of bytes of |iv| which are valid for modes that
+  // manage partial blocks themselves.
+  unsigned num;
+
+  // final_used is non-zero if the |final| buffer contains plaintext.
+  int final_used;
+
+  // block_mask contains |cipher->block_size| minus one. (The block size
+  // assumed to be a power of two.)
+  int block_mask;
+
+  uint8_t final[EVP_MAX_BLOCK_LENGTH];  // possible final block
+} /* EVP_CIPHER_CTX */;
+
+typedef struct evp_cipher_info_st {
+  const EVP_CIPHER *cipher;
+  unsigned char iv[EVP_MAX_IV_LENGTH];
+} EVP_CIPHER_INFO;
+
+struct evp_cipher_st {
+  // type contains a NID identifing the cipher. (e.g. NID_aes_128_gcm.)
+  int nid;
+
+  // block_size contains the block size, in bytes, of the cipher, or 1 for a
+  // stream cipher.
+  unsigned block_size;
+
+  // key_len contains the key size, in bytes, for the cipher. If the cipher
+  // takes a variable key size then this contains the default size.
+  unsigned key_len;
+
+  // iv_len contains the IV size, in bytes, or zero if inapplicable.
+  unsigned iv_len;
+
+  // ctx_size contains the size, in bytes, of the per-key context for this
+  // cipher.
+  unsigned ctx_size;
+
+  // flags contains the OR of a number of flags. See |EVP_CIPH_*|.
+  uint32_t flags;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;
+
+  int (*init)(EVP_CIPHER_CTX *ctx, const uint8_t *key, const uint8_t *iv,
+              int enc);
+
+  int (*cipher)(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                size_t inl);
+
+  // cleanup, if non-NULL, releases memory associated with the context. It is
+  // called if |EVP_CTRL_INIT| succeeds. Note that |init| may not have been
+  // called at this point.
+  void (*cleanup)(EVP_CIPHER_CTX *);
+
+  int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_CIPHER_CTX, EVP_CIPHER_CTX_free)
+
+using ScopedEVP_CIPHER_CTX =
+    internal::StackAllocated<EVP_CIPHER_CTX, int, EVP_CIPHER_CTX_init,
+                             EVP_CIPHER_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define CIPHER_R_AES_KEY_SETUP_FAILED 100
+#define CIPHER_R_BAD_DECRYPT 101
+#define CIPHER_R_BAD_KEY_LENGTH 102
+#define CIPHER_R_BUFFER_TOO_SMALL 103
+#define CIPHER_R_CTRL_NOT_IMPLEMENTED 104
+#define CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED 105
+#define CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH 106
+#define CIPHER_R_INITIALIZATION_ERROR 107
+#define CIPHER_R_INPUT_NOT_INITIALIZED 108
+#define CIPHER_R_INVALID_AD_SIZE 109
+#define CIPHER_R_INVALID_KEY_LENGTH 110
+#define CIPHER_R_INVALID_NONCE_SIZE 111
+#define CIPHER_R_INVALID_OPERATION 112
+#define CIPHER_R_IV_TOO_LARGE 113
+#define CIPHER_R_NO_CIPHER_SET 114
+#define CIPHER_R_OUTPUT_ALIASES_INPUT 115
+#define CIPHER_R_TAG_TOO_LARGE 116
+#define CIPHER_R_TOO_LARGE 117
+#define CIPHER_R_UNSUPPORTED_AD_SIZE 118
+#define CIPHER_R_UNSUPPORTED_INPUT_SIZE 119
+#define CIPHER_R_UNSUPPORTED_KEY_SIZE 120
+#define CIPHER_R_UNSUPPORTED_NONCE_SIZE 121
+#define CIPHER_R_UNSUPPORTED_TAG_SIZE 122
+#define CIPHER_R_WRONG_FINAL_BLOCK_LENGTH 123
+#define CIPHER_R_NO_DIRECTION_SET 124
+#define CIPHER_R_INVALID_NONCE 125
+
+#endif  // OPENSSL_HEADER_CIPHER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.back
new file mode 100644
index 0000000..d22a6c2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.back	
@@ -0,0 +1,638 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_H
+#define OPENSSL_HEADER_CIPHER_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Ciphers.
+
+
+// Cipher primitives.
+//
+// The following functions return |EVP_CIPHER| objects that implement the named
+// cipher algorithm.
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc4(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_cbc(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ofb(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ofb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_xts(void);
+
+// EVP_enc_null returns a 'cipher' that passes plaintext through as
+// ciphertext.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_enc_null(void);
+
+// EVP_rc2_cbc returns a cipher that implements 128-bit RC2 in CBC mode.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc2_cbc(void);
+
+// EVP_rc2_40_cbc returns a cipher that implements 40-bit RC2 in CBC mode. This
+// is obviously very, very weak and is included only in order to read PKCS#12
+// files, which often encrypt the certificate chain using this cipher. It is
+// deliberately not exported.
+const EVP_CIPHER *EVP_rc2_40_cbc(void);
+
+// EVP_get_cipherbynid returns the cipher corresponding to the given NID, or
+// NULL if no such cipher is known.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbynid(int nid);
+
+
+// Cipher context allocation.
+//
+// An |EVP_CIPHER_CTX| represents the state of an encryption or decryption in
+// progress.
+
+// EVP_CIPHER_CTX_init initialises an, already allocated, |EVP_CIPHER_CTX|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_new allocates a fresh |EVP_CIPHER_CTX|, calls
+// |EVP_CIPHER_CTX_init| and returns it, or NULL on allocation failure.
+OPENSSL_EXPORT EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
+
+// EVP_CIPHER_CTX_cleanup frees any memory referenced by |ctx|. It returns
+// one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_free calls |EVP_CIPHER_CTX_cleanup| on |ctx| and then frees
+// |ctx| itself.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_copy sets |out| to be a duplicate of the current state of
+// |in|. The |out| argument must have been previously initialised.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out,
+                                       const EVP_CIPHER_CTX *in);
+
+// EVP_CIPHER_CTX_reset calls |EVP_CIPHER_CTX_cleanup| followed by
+// |EVP_CIPHER_CTX_init| and returns one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx);
+
+
+// Cipher context configuration.
+
+// EVP_CipherInit_ex configures |ctx| for a fresh encryption (or decryption, if
+// |enc| is zero) operation using |cipher|. If |ctx| has been previously
+// configured with a cipher then |cipher|, |key| and |iv| may be |NULL| and
+// |enc| may be -1 to reuse the previous values. The operation will use |key|
+// as the key and |iv| as the IV (if any). These should have the correct
+// lengths given by |EVP_CIPHER_key_length| and |EVP_CIPHER_iv_length|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,
+                                     const EVP_CIPHER *cipher, ENGINE *engine,
+                                     const uint8_t *key, const uint8_t *iv,
+                                     int enc);
+
+// EVP_EncryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+// EVP_DecryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+
+// Cipher operations.
+
+// EVP_EncryptUpdate encrypts |in_len| bytes from |in| to |out|. The number
+// of output bytes may be up to |in_len| plus the block length minus one and
+// |out| must have sufficient space. The number of bytes actually output is
+// written to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_EncryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then standard padding is applied to create the final block. If
+// padding is disabled (with |EVP_CIPHER_CTX_set_padding|) then any partial
+// block remaining will cause an error. The function returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                       int *out_len);
+
+// EVP_DecryptUpdate decrypts |in_len| bytes from |in| to |out|. The number of
+// output bytes may be up to |in_len| plus the block length minus one and |out|
+// must have sufficient space. The number of bytes actually output is written
+// to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_DecryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then padding is removed from the final block.
+//
+// WARNING: it is unsafe to call this function with unauthenticated
+// ciphertext if padding is enabled.
+OPENSSL_EXPORT int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                                       int *out_len);
+
+// EVP_Cipher performs a one-shot encryption/decryption operation. No partial
+// blocks are maintained between calls. However, any internal cipher state is
+// still updated. For CBC-mode ciphers, the IV is updated to the final
+// ciphertext block. For stream ciphers, the stream is advanced past the bytes
+// used. It returns one on success and zero otherwise, unless |EVP_CIPHER_flags|
+// has |EVP_CIPH_FLAG_CUSTOM_CIPHER| set. Then it returns the number of bytes
+// written or -1 on error.
+//
+// WARNING: this differs from the usual return value convention when using
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|.
+//
+// TODO(davidben): The normal ciphers currently never fail, even if, e.g.,
+// |in_len| is not a multiple of the block size for CBC-mode decryption. The
+// input just gets rounded up while the output gets truncated. This should
+// either be officially documented or fail.
+OPENSSL_EXPORT int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len);
+
+// EVP_CipherUpdate calls either |EVP_EncryptUpdate| or |EVP_DecryptUpdate|
+// depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    int in_len);
+
+// EVP_CipherFinal_ex calls either |EVP_EncryptFinal_ex| or
+// |EVP_DecryptFinal_ex| depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                      int *out_len);
+
+
+// Cipher context accessors.
+
+// EVP_CIPHER_CTX_cipher returns the |EVP_CIPHER| underlying |ctx|, or NULL if
+// none has been set.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_CIPHER_CTX_cipher(
+    const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_nid returns a NID identifying the |EVP_CIPHER| underlying
+// |ctx| (e.g. |NID_aes_128_gcm|). It will crash if no cipher has been
+// configured.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_encrypting returns one if |ctx| is configured for encryption
+// and zero otherwise.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_block_size returns the block size, in bytes, of the cipher
+// underlying |ctx|, or one if the cipher is a stream cipher. It will crash if
+// no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_key_length returns the key size, in bytes, of the cipher
+// underlying |ctx| or zero if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_iv_length returns the IV size, in bytes, of the cipher
+// underlying |ctx|. It will crash if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_get_app_data returns the opaque, application data pointer for
+// |ctx|, or NULL if none has been set.
+OPENSSL_EXPORT void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_set_app_data sets the opaque, application data pointer for
+// |ctx| to |data|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx,
+                                                void *data);
+
+// EVP_CIPHER_CTX_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_mode returns one of the |EVP_CIPH_*| cipher mode values
+// enumerated below. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_ctrl is an |ioctl| like function. The |command| argument
+// should be one of the |EVP_CTRL_*| values. The |arg| and |ptr| arguments are
+// specific to the command in question.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command,
+                                       int arg, void *ptr);
+
+// EVP_CIPHER_CTX_set_padding sets whether padding is enabled for |ctx| and
+// returns one. Pass a non-zero |pad| to enable padding (the default) or zero
+// to disable.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad);
+
+// EVP_CIPHER_CTX_set_key_length sets the key length for |ctx|. This is only
+// valid for ciphers that can take a variable length key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *ctx,
+                                                 unsigned key_len);
+
+
+// Cipher accessors.
+
+// EVP_CIPHER_nid returns a NID identifying |cipher|. (For example,
+// |NID_aes_128_gcm|.)
+OPENSSL_EXPORT int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_block_size returns the block size, in bytes, for |cipher|, or one
+// if |cipher| is a stream cipher.
+OPENSSL_EXPORT unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_key_length returns the key size, in bytes, for |cipher|. If
+// |cipher| can take a variable key length then this function returns the
+// default key length and |EVP_CIPHER_flags| will return a value with
+// |EVP_CIPH_VARIABLE_LENGTH| set.
+OPENSSL_EXPORT unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_iv_length returns the IV size, in bytes, of |cipher|, or zero if
+// |cipher| doesn't take an IV.
+OPENSSL_EXPORT unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_mode returns one of the cipher mode values enumerated below.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher);
+
+
+// Key derivation.
+
+// EVP_BytesToKey generates a key and IV for the cipher |type| by iterating
+// |md| |count| times using |data| and |salt|. On entry, the |key| and |iv|
+// buffers must have enough space to hold a key and IV for |type|. It returns
+// the length of the key on success or zero on error.
+OPENSSL_EXPORT int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+                                  const uint8_t *salt, const uint8_t *data,
+                                  size_t data_len, unsigned count, uint8_t *key,
+                                  uint8_t *iv);
+
+
+// Cipher modes (for |EVP_CIPHER_mode|).
+
+#define EVP_CIPH_STREAM_CIPHER 0x0
+#define EVP_CIPH_ECB_MODE 0x1
+#define EVP_CIPH_CBC_MODE 0x2
+#define EVP_CIPH_CFB_MODE 0x3
+#define EVP_CIPH_OFB_MODE 0x4
+#define EVP_CIPH_CTR_MODE 0x5
+#define EVP_CIPH_GCM_MODE 0x6
+#define EVP_CIPH_XTS_MODE 0x7
+
+
+// Cipher flags (for |EVP_CIPHER_flags|).
+
+// EVP_CIPH_VARIABLE_LENGTH indicates that the cipher takes a variable length
+// key.
+#define EVP_CIPH_VARIABLE_LENGTH 0x40
+
+// EVP_CIPH_ALWAYS_CALL_INIT indicates that the |init| function for the cipher
+// should always be called when initialising a new operation, even if the key
+// is NULL to indicate that the same key is being used.
+#define EVP_CIPH_ALWAYS_CALL_INIT 0x80
+
+// EVP_CIPH_CUSTOM_IV indicates that the cipher manages the IV itself rather
+// than keeping it in the |iv| member of |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CUSTOM_IV 0x100
+
+// EVP_CIPH_CTRL_INIT indicates that EVP_CTRL_INIT should be used when
+// initialising an |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CTRL_INIT 0x200
+
+// EVP_CIPH_FLAG_CUSTOM_CIPHER indicates that the cipher manages blocking
+// itself. This causes EVP_(En|De)crypt_ex to be simple wrapper functions.
+#define EVP_CIPH_FLAG_CUSTOM_CIPHER 0x400
+
+// EVP_CIPH_FLAG_AEAD_CIPHER specifies that the cipher is an AEAD. This is an
+// older version of the proper AEAD interface. See aead.h for the current
+// one.
+#define EVP_CIPH_FLAG_AEAD_CIPHER 0x800
+
+// EVP_CIPH_CUSTOM_COPY indicates that the |ctrl| callback should be called
+// with |EVP_CTRL_COPY| at the end of normal |EVP_CIPHER_CTX_copy|
+// processing.
+#define EVP_CIPH_CUSTOM_COPY 0x1000
+
+
+// Deprecated functions
+
+// EVP_CipherInit acts like EVP_CipherInit_ex except that |EVP_CIPHER_CTX_init|
+// is called on |cipher| first, if |cipher| is not NULL.
+OPENSSL_EXPORT int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                                  const uint8_t *key, const uint8_t *iv,
+                                  int enc);
+
+// EVP_EncryptInit calls |EVP_CipherInit| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_DecryptInit calls |EVP_CipherInit| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_add_cipher_alias does nothing and returns one.
+OPENSSL_EXPORT int EVP_add_cipher_alias(const char *a, const char *b);
+
+// EVP_get_cipherbyname returns an |EVP_CIPHER| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
+
+// These AEADs are deprecated AES-GCM implementations that set
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|. Use |EVP_aead_aes_128_gcm| and
+// |EVP_aead_aes_256_gcm| instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_gcm(void);
+
+// These are deprecated, 192-bit version of AES.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ofb(void);
+
+// EVP_des_ede3_ecb is an alias for |EVP_des_ede3|. Use the former instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_ecb(void);
+
+// EVP_aes_128_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cfb128(void);
+
+// EVP_aes_256_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cfb128(void);
+
+// EVP_bf_ecb is Blowfish in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_ecb(void);
+
+// EVP_bf_cbc is Blowfish in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cbc(void);
+
+// EVP_bf_cfb is Blowfish in 64-bit CFB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cfb(void);
+
+// EVP_cast5_ecb is CAST5 in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_ecb(void);
+
+// EVP_cast5_cbc is CAST5 in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_cbc(void);
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define EVP_CIPH_CCM_MODE (-1)
+#define EVP_CIPH_OCB_MODE (-2)
+#define EVP_CIPH_WRAP_MODE (-3)
+#define EVP_CIPHER_CTX_FLAG_WRAP_ALLOW 0
+
+// EVP_CIPHER_CTX_set_flags does nothing.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx,
+                                             uint32_t flags);
+
+
+// Private functions.
+
+// EVP_CIPH_NO_PADDING disables padding in block ciphers.
+#define EVP_CIPH_NO_PADDING 0x800
+
+// The following are |EVP_CIPHER_CTX_ctrl| commands.
+#define EVP_CTRL_INIT 0x0
+#define EVP_CTRL_SET_KEY_LENGTH 0x1
+#define EVP_CTRL_GET_RC2_KEY_BITS 0x2
+#define EVP_CTRL_SET_RC2_KEY_BITS 0x3
+#define EVP_CTRL_GET_RC5_ROUNDS 0x4
+#define EVP_CTRL_SET_RC5_ROUNDS 0x5
+#define EVP_CTRL_RAND_KEY 0x6
+#define EVP_CTRL_PBE_PRF_NID 0x7
+#define EVP_CTRL_COPY 0x8
+#define EVP_CTRL_AEAD_SET_IVLEN 0x9
+#define EVP_CTRL_AEAD_GET_TAG 0x10
+#define EVP_CTRL_AEAD_SET_TAG 0x11
+#define EVP_CTRL_AEAD_SET_IV_FIXED 0x12
+#define EVP_CTRL_GCM_IV_GEN 0x13
+#define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
+// EVP_CTRL_GCM_SET_IV_INV sets the GCM invocation field, decrypt only
+#define EVP_CTRL_GCM_SET_IV_INV 0x18
+
+// The following constants are unused.
+#define EVP_GCM_TLS_FIXED_IV_LEN 4
+#define EVP_GCM_TLS_EXPLICIT_IV_LEN 8
+#define EVP_GCM_TLS_TAG_LEN 16
+
+// The following are legacy aliases for AEAD |EVP_CIPHER_CTX_ctrl| values.
+#define EVP_CTRL_GCM_SET_IVLEN EVP_CTRL_AEAD_SET_IVLEN
+#define EVP_CTRL_GCM_GET_TAG EVP_CTRL_AEAD_GET_TAG
+#define EVP_CTRL_GCM_SET_TAG EVP_CTRL_AEAD_SET_TAG
+#define EVP_CTRL_GCM_SET_IV_FIXED EVP_CTRL_AEAD_SET_IV_FIXED
+
+#define EVP_MAX_KEY_LENGTH 64
+#define EVP_MAX_IV_LENGTH 16
+#define EVP_MAX_BLOCK_LENGTH 32
+
+struct evp_cipher_ctx_st {
+  // cipher contains the underlying cipher for this context.
+  const EVP_CIPHER *cipher;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;      // application stuff
+
+  // cipher_data points to the |cipher| specific state.
+  void *cipher_data;
+
+  // key_len contains the length of the key, which may differ from
+  // |cipher->key_len| if the cipher can take a variable key length.
+  unsigned key_len;
+
+  // encrypt is one if encrypting and zero if decrypting.
+  int encrypt;
+
+  // flags contains the OR of zero or more |EVP_CIPH_*| flags, above.
+  uint32_t flags;
+
+  // oiv contains the original IV value.
+  uint8_t oiv[EVP_MAX_IV_LENGTH];
+
+  // iv contains the current IV value, which may have been updated.
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+
+  // buf contains a partial block which is used by, for example, CTR mode to
+  // store unused keystream bytes.
+  uint8_t buf[EVP_MAX_BLOCK_LENGTH];
+
+  // buf_len contains the number of bytes of a partial block contained in
+  // |buf|.
+  int buf_len;
+
+  // num contains the number of bytes of |iv| which are valid for modes that
+  // manage partial blocks themselves.
+  unsigned num;
+
+  // final_used is non-zero if the |final| buffer contains plaintext.
+  int final_used;
+
+  // block_mask contains |cipher->block_size| minus one. (The block size
+  // assumed to be a power of two.)
+  int block_mask;
+
+  uint8_t final[EVP_MAX_BLOCK_LENGTH];  // possible final block
+} /* EVP_CIPHER_CTX */;
+
+typedef struct evp_cipher_info_st {
+  const EVP_CIPHER *cipher;
+  unsigned char iv[EVP_MAX_IV_LENGTH];
+} EVP_CIPHER_INFO;
+
+struct evp_cipher_st {
+  // type contains a NID identifing the cipher. (e.g. NID_aes_128_gcm.)
+  int nid;
+
+  // block_size contains the block size, in bytes, of the cipher, or 1 for a
+  // stream cipher.
+  unsigned block_size;
+
+  // key_len contains the key size, in bytes, for the cipher. If the cipher
+  // takes a variable key size then this contains the default size.
+  unsigned key_len;
+
+  // iv_len contains the IV size, in bytes, or zero if inapplicable.
+  unsigned iv_len;
+
+  // ctx_size contains the size, in bytes, of the per-key context for this
+  // cipher.
+  unsigned ctx_size;
+
+  // flags contains the OR of a number of flags. See |EVP_CIPH_*|.
+  uint32_t flags;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;
+
+  int (*init)(EVP_CIPHER_CTX *ctx, const uint8_t *key, const uint8_t *iv,
+              int enc);
+
+  int (*cipher)(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                size_t inl);
+
+  // cleanup, if non-NULL, releases memory associated with the context. It is
+  // called if |EVP_CTRL_INIT| succeeds. Note that |init| may not have been
+  // called at this point.
+  void (*cleanup)(EVP_CIPHER_CTX *);
+
+  int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_CIPHER_CTX, EVP_CIPHER_CTX_free)
+
+using ScopedEVP_CIPHER_CTX =
+    internal::StackAllocated<EVP_CIPHER_CTX, int, EVP_CIPHER_CTX_init,
+                             EVP_CIPHER_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define CIPHER_R_AES_KEY_SETUP_FAILED 100
+#define CIPHER_R_BAD_DECRYPT 101
+#define CIPHER_R_BAD_KEY_LENGTH 102
+#define CIPHER_R_BUFFER_TOO_SMALL 103
+#define CIPHER_R_CTRL_NOT_IMPLEMENTED 104
+#define CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED 105
+#define CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH 106
+#define CIPHER_R_INITIALIZATION_ERROR 107
+#define CIPHER_R_INPUT_NOT_INITIALIZED 108
+#define CIPHER_R_INVALID_AD_SIZE 109
+#define CIPHER_R_INVALID_KEY_LENGTH 110
+#define CIPHER_R_INVALID_NONCE_SIZE 111
+#define CIPHER_R_INVALID_OPERATION 112
+#define CIPHER_R_IV_TOO_LARGE 113
+#define CIPHER_R_NO_CIPHER_SET 114
+#define CIPHER_R_OUTPUT_ALIASES_INPUT 115
+#define CIPHER_R_TAG_TOO_LARGE 116
+#define CIPHER_R_TOO_LARGE 117
+#define CIPHER_R_UNSUPPORTED_AD_SIZE 118
+#define CIPHER_R_UNSUPPORTED_INPUT_SIZE 119
+#define CIPHER_R_UNSUPPORTED_KEY_SIZE 120
+#define CIPHER_R_UNSUPPORTED_NONCE_SIZE 121
+#define CIPHER_R_UNSUPPORTED_TAG_SIZE 122
+#define CIPHER_R_WRONG_FINAL_BLOCK_LENGTH 123
+#define CIPHER_R_NO_DIRECTION_SET 124
+#define CIPHER_R_INVALID_NONCE 125
+
+#endif  // OPENSSL_HEADER_CIPHER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.grpc_back
new file mode 100644
index 0000000..d22a6c2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cipher.h.grpc_back	
@@ -0,0 +1,638 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CIPHER_H
+#define OPENSSL_HEADER_CIPHER_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Ciphers.
+
+
+// Cipher primitives.
+//
+// The following functions return |EVP_CIPHER| objects that implement the named
+// cipher algorithm.
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc4(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_cbc(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_ofb(void);
+
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_ofb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_xts(void);
+
+// EVP_enc_null returns a 'cipher' that passes plaintext through as
+// ciphertext.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_enc_null(void);
+
+// EVP_rc2_cbc returns a cipher that implements 128-bit RC2 in CBC mode.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_rc2_cbc(void);
+
+// EVP_rc2_40_cbc returns a cipher that implements 40-bit RC2 in CBC mode. This
+// is obviously very, very weak and is included only in order to read PKCS#12
+// files, which often encrypt the certificate chain using this cipher. It is
+// deliberately not exported.
+const EVP_CIPHER *EVP_rc2_40_cbc(void);
+
+// EVP_get_cipherbynid returns the cipher corresponding to the given NID, or
+// NULL if no such cipher is known.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbynid(int nid);
+
+
+// Cipher context allocation.
+//
+// An |EVP_CIPHER_CTX| represents the state of an encryption or decryption in
+// progress.
+
+// EVP_CIPHER_CTX_init initialises an, already allocated, |EVP_CIPHER_CTX|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_new allocates a fresh |EVP_CIPHER_CTX|, calls
+// |EVP_CIPHER_CTX_init| and returns it, or NULL on allocation failure.
+OPENSSL_EXPORT EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
+
+// EVP_CIPHER_CTX_cleanup frees any memory referenced by |ctx|. It returns
+// one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_free calls |EVP_CIPHER_CTX_cleanup| on |ctx| and then frees
+// |ctx| itself.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_copy sets |out| to be a duplicate of the current state of
+// |in|. The |out| argument must have been previously initialised.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out,
+                                       const EVP_CIPHER_CTX *in);
+
+// EVP_CIPHER_CTX_reset calls |EVP_CIPHER_CTX_cleanup| followed by
+// |EVP_CIPHER_CTX_init| and returns one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx);
+
+
+// Cipher context configuration.
+
+// EVP_CipherInit_ex configures |ctx| for a fresh encryption (or decryption, if
+// |enc| is zero) operation using |cipher|. If |ctx| has been previously
+// configured with a cipher then |cipher|, |key| and |iv| may be |NULL| and
+// |enc| may be -1 to reuse the previous values. The operation will use |key|
+// as the key and |iv| as the IV (if any). These should have the correct
+// lengths given by |EVP_CIPHER_key_length| and |EVP_CIPHER_iv_length|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx,
+                                     const EVP_CIPHER *cipher, ENGINE *engine,
+                                     const uint8_t *key, const uint8_t *iv,
+                                     int enc);
+
+// EVP_EncryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+// EVP_DecryptInit_ex calls |EVP_CipherInit_ex| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx,
+                                      const EVP_CIPHER *cipher, ENGINE *impl,
+                                      const uint8_t *key, const uint8_t *iv);
+
+
+// Cipher operations.
+
+// EVP_EncryptUpdate encrypts |in_len| bytes from |in| to |out|. The number
+// of output bytes may be up to |in_len| plus the block length minus one and
+// |out| must have sufficient space. The number of bytes actually output is
+// written to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_EncryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then standard padding is applied to create the final block. If
+// padding is disabled (with |EVP_CIPHER_CTX_set_padding|) then any partial
+// block remaining will cause an error. The function returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                       int *out_len);
+
+// EVP_DecryptUpdate decrypts |in_len| bytes from |in| to |out|. The number of
+// output bytes may be up to |in_len| plus the block length minus one and |out|
+// must have sufficient space. The number of bytes actually output is written
+// to |*out_len|. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                     int *out_len, const uint8_t *in,
+                                     int in_len);
+
+// EVP_DecryptFinal_ex writes at most a block of ciphertext to |out| and sets
+// |*out_len| to the number of bytes written. If padding is enabled (the
+// default) then padding is removed from the final block.
+//
+// WARNING: it is unsafe to call this function with unauthenticated
+// ciphertext if padding is enabled.
+OPENSSL_EXPORT int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                                       int *out_len);
+
+// EVP_Cipher performs a one-shot encryption/decryption operation. No partial
+// blocks are maintained between calls. However, any internal cipher state is
+// still updated. For CBC-mode ciphers, the IV is updated to the final
+// ciphertext block. For stream ciphers, the stream is advanced past the bytes
+// used. It returns one on success and zero otherwise, unless |EVP_CIPHER_flags|
+// has |EVP_CIPH_FLAG_CUSTOM_CIPHER| set. Then it returns the number of bytes
+// written or -1 on error.
+//
+// WARNING: this differs from the usual return value convention when using
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|.
+//
+// TODO(davidben): The normal ciphers currently never fail, even if, e.g.,
+// |in_len| is not a multiple of the block size for CBC-mode decryption. The
+// input just gets rounded up while the output gets truncated. This should
+// either be officially documented or fail.
+OPENSSL_EXPORT int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                              const uint8_t *in, size_t in_len);
+
+// EVP_CipherUpdate calls either |EVP_EncryptUpdate| or |EVP_DecryptUpdate|
+// depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                    int *out_len, const uint8_t *in,
+                                    int in_len);
+
+// EVP_CipherFinal_ex calls either |EVP_EncryptFinal_ex| or
+// |EVP_DecryptFinal_ex| depending on how |ctx| has been setup.
+OPENSSL_EXPORT int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out,
+                                      int *out_len);
+
+
+// Cipher context accessors.
+
+// EVP_CIPHER_CTX_cipher returns the |EVP_CIPHER| underlying |ctx|, or NULL if
+// none has been set.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_CIPHER_CTX_cipher(
+    const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_nid returns a NID identifying the |EVP_CIPHER| underlying
+// |ctx| (e.g. |NID_aes_128_gcm|). It will crash if no cipher has been
+// configured.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_encrypting returns one if |ctx| is configured for encryption
+// and zero otherwise.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_block_size returns the block size, in bytes, of the cipher
+// underlying |ctx|, or one if the cipher is a stream cipher. It will crash if
+// no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_key_length returns the key size, in bytes, of the cipher
+// underlying |ctx| or zero if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_iv_length returns the IV size, in bytes, of the cipher
+// underlying |ctx|. It will crash if no cipher has been configured.
+OPENSSL_EXPORT unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_get_app_data returns the opaque, application data pointer for
+// |ctx|, or NULL if none has been set.
+OPENSSL_EXPORT void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_set_app_data sets the opaque, application data pointer for
+// |ctx| to |data|.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx,
+                                                void *data);
+
+// EVP_CIPHER_CTX_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_mode returns one of the |EVP_CIPH_*| cipher mode values
+// enumerated below. It will crash if no cipher has been configured.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx);
+
+// EVP_CIPHER_CTX_ctrl is an |ioctl| like function. The |command| argument
+// should be one of the |EVP_CTRL_*| values. The |arg| and |ptr| arguments are
+// specific to the command in question.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command,
+                                       int arg, void *ptr);
+
+// EVP_CIPHER_CTX_set_padding sets whether padding is enabled for |ctx| and
+// returns one. Pass a non-zero |pad| to enable padding (the default) or zero
+// to disable.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad);
+
+// EVP_CIPHER_CTX_set_key_length sets the key length for |ctx|. This is only
+// valid for ciphers that can take a variable length key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *ctx,
+                                                 unsigned key_len);
+
+
+// Cipher accessors.
+
+// EVP_CIPHER_nid returns a NID identifying |cipher|. (For example,
+// |NID_aes_128_gcm|.)
+OPENSSL_EXPORT int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_block_size returns the block size, in bytes, for |cipher|, or one
+// if |cipher| is a stream cipher.
+OPENSSL_EXPORT unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_key_length returns the key size, in bytes, for |cipher|. If
+// |cipher| can take a variable key length then this function returns the
+// default key length and |EVP_CIPHER_flags| will return a value with
+// |EVP_CIPH_VARIABLE_LENGTH| set.
+OPENSSL_EXPORT unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_iv_length returns the IV size, in bytes, of |cipher|, or zero if
+// |cipher| doesn't take an IV.
+OPENSSL_EXPORT unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_flags returns a value which is the OR of zero or more
+// |EVP_CIPH_*| flags.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher);
+
+// EVP_CIPHER_mode returns one of the cipher mode values enumerated below.
+OPENSSL_EXPORT uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher);
+
+
+// Key derivation.
+
+// EVP_BytesToKey generates a key and IV for the cipher |type| by iterating
+// |md| |count| times using |data| and |salt|. On entry, the |key| and |iv|
+// buffers must have enough space to hold a key and IV for |type|. It returns
+// the length of the key on success or zero on error.
+OPENSSL_EXPORT int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+                                  const uint8_t *salt, const uint8_t *data,
+                                  size_t data_len, unsigned count, uint8_t *key,
+                                  uint8_t *iv);
+
+
+// Cipher modes (for |EVP_CIPHER_mode|).
+
+#define EVP_CIPH_STREAM_CIPHER 0x0
+#define EVP_CIPH_ECB_MODE 0x1
+#define EVP_CIPH_CBC_MODE 0x2
+#define EVP_CIPH_CFB_MODE 0x3
+#define EVP_CIPH_OFB_MODE 0x4
+#define EVP_CIPH_CTR_MODE 0x5
+#define EVP_CIPH_GCM_MODE 0x6
+#define EVP_CIPH_XTS_MODE 0x7
+
+
+// Cipher flags (for |EVP_CIPHER_flags|).
+
+// EVP_CIPH_VARIABLE_LENGTH indicates that the cipher takes a variable length
+// key.
+#define EVP_CIPH_VARIABLE_LENGTH 0x40
+
+// EVP_CIPH_ALWAYS_CALL_INIT indicates that the |init| function for the cipher
+// should always be called when initialising a new operation, even if the key
+// is NULL to indicate that the same key is being used.
+#define EVP_CIPH_ALWAYS_CALL_INIT 0x80
+
+// EVP_CIPH_CUSTOM_IV indicates that the cipher manages the IV itself rather
+// than keeping it in the |iv| member of |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CUSTOM_IV 0x100
+
+// EVP_CIPH_CTRL_INIT indicates that EVP_CTRL_INIT should be used when
+// initialising an |EVP_CIPHER_CTX|.
+#define EVP_CIPH_CTRL_INIT 0x200
+
+// EVP_CIPH_FLAG_CUSTOM_CIPHER indicates that the cipher manages blocking
+// itself. This causes EVP_(En|De)crypt_ex to be simple wrapper functions.
+#define EVP_CIPH_FLAG_CUSTOM_CIPHER 0x400
+
+// EVP_CIPH_FLAG_AEAD_CIPHER specifies that the cipher is an AEAD. This is an
+// older version of the proper AEAD interface. See aead.h for the current
+// one.
+#define EVP_CIPH_FLAG_AEAD_CIPHER 0x800
+
+// EVP_CIPH_CUSTOM_COPY indicates that the |ctrl| callback should be called
+// with |EVP_CTRL_COPY| at the end of normal |EVP_CIPHER_CTX_copy|
+// processing.
+#define EVP_CIPH_CUSTOM_COPY 0x1000
+
+
+// Deprecated functions
+
+// EVP_CipherInit acts like EVP_CipherInit_ex except that |EVP_CIPHER_CTX_init|
+// is called on |cipher| first, if |cipher| is not NULL.
+OPENSSL_EXPORT int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+                                  const uint8_t *key, const uint8_t *iv,
+                                  int enc);
+
+// EVP_EncryptInit calls |EVP_CipherInit| with |enc| equal to one.
+OPENSSL_EXPORT int EVP_EncryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_DecryptInit calls |EVP_CipherInit| with |enc| equal to zero.
+OPENSSL_EXPORT int EVP_DecryptInit(EVP_CIPHER_CTX *ctx,
+                                   const EVP_CIPHER *cipher, const uint8_t *key,
+                                   const uint8_t *iv);
+
+// EVP_add_cipher_alias does nothing and returns one.
+OPENSSL_EXPORT int EVP_add_cipher_alias(const char *a, const char *b);
+
+// EVP_get_cipherbyname returns an |EVP_CIPHER| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
+
+// These AEADs are deprecated AES-GCM implementations that set
+// |EVP_CIPH_FLAG_CUSTOM_CIPHER|. Use |EVP_aead_aes_128_gcm| and
+// |EVP_aead_aes_256_gcm| instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_gcm(void);
+
+// These are deprecated, 192-bit version of AES.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ecb(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_cbc(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ctr(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_gcm(void);
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_192_ofb(void);
+
+// EVP_des_ede3_ecb is an alias for |EVP_des_ede3|. Use the former instead.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_des_ede3_ecb(void);
+
+// EVP_aes_128_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_128_cfb128(void);
+
+// EVP_aes_256_cfb128 is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_aes_256_cfb128(void);
+
+// EVP_bf_ecb is Blowfish in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_ecb(void);
+
+// EVP_bf_cbc is Blowfish in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cbc(void);
+
+// EVP_bf_cfb is Blowfish in 64-bit CFB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_bf_cfb(void);
+
+// EVP_cast5_ecb is CAST5 in ECB mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_ecb(void);
+
+// EVP_cast5_cbc is CAST5 in CBC mode and is only available in decrepit.
+OPENSSL_EXPORT const EVP_CIPHER *EVP_cast5_cbc(void);
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define EVP_CIPH_CCM_MODE (-1)
+#define EVP_CIPH_OCB_MODE (-2)
+#define EVP_CIPH_WRAP_MODE (-3)
+#define EVP_CIPHER_CTX_FLAG_WRAP_ALLOW 0
+
+// EVP_CIPHER_CTX_set_flags does nothing.
+OPENSSL_EXPORT void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx,
+                                             uint32_t flags);
+
+
+// Private functions.
+
+// EVP_CIPH_NO_PADDING disables padding in block ciphers.
+#define EVP_CIPH_NO_PADDING 0x800
+
+// The following are |EVP_CIPHER_CTX_ctrl| commands.
+#define EVP_CTRL_INIT 0x0
+#define EVP_CTRL_SET_KEY_LENGTH 0x1
+#define EVP_CTRL_GET_RC2_KEY_BITS 0x2
+#define EVP_CTRL_SET_RC2_KEY_BITS 0x3
+#define EVP_CTRL_GET_RC5_ROUNDS 0x4
+#define EVP_CTRL_SET_RC5_ROUNDS 0x5
+#define EVP_CTRL_RAND_KEY 0x6
+#define EVP_CTRL_PBE_PRF_NID 0x7
+#define EVP_CTRL_COPY 0x8
+#define EVP_CTRL_AEAD_SET_IVLEN 0x9
+#define EVP_CTRL_AEAD_GET_TAG 0x10
+#define EVP_CTRL_AEAD_SET_TAG 0x11
+#define EVP_CTRL_AEAD_SET_IV_FIXED 0x12
+#define EVP_CTRL_GCM_IV_GEN 0x13
+#define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
+// EVP_CTRL_GCM_SET_IV_INV sets the GCM invocation field, decrypt only
+#define EVP_CTRL_GCM_SET_IV_INV 0x18
+
+// The following constants are unused.
+#define EVP_GCM_TLS_FIXED_IV_LEN 4
+#define EVP_GCM_TLS_EXPLICIT_IV_LEN 8
+#define EVP_GCM_TLS_TAG_LEN 16
+
+// The following are legacy aliases for AEAD |EVP_CIPHER_CTX_ctrl| values.
+#define EVP_CTRL_GCM_SET_IVLEN EVP_CTRL_AEAD_SET_IVLEN
+#define EVP_CTRL_GCM_GET_TAG EVP_CTRL_AEAD_GET_TAG
+#define EVP_CTRL_GCM_SET_TAG EVP_CTRL_AEAD_SET_TAG
+#define EVP_CTRL_GCM_SET_IV_FIXED EVP_CTRL_AEAD_SET_IV_FIXED
+
+#define EVP_MAX_KEY_LENGTH 64
+#define EVP_MAX_IV_LENGTH 16
+#define EVP_MAX_BLOCK_LENGTH 32
+
+struct evp_cipher_ctx_st {
+  // cipher contains the underlying cipher for this context.
+  const EVP_CIPHER *cipher;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;      // application stuff
+
+  // cipher_data points to the |cipher| specific state.
+  void *cipher_data;
+
+  // key_len contains the length of the key, which may differ from
+  // |cipher->key_len| if the cipher can take a variable key length.
+  unsigned key_len;
+
+  // encrypt is one if encrypting and zero if decrypting.
+  int encrypt;
+
+  // flags contains the OR of zero or more |EVP_CIPH_*| flags, above.
+  uint32_t flags;
+
+  // oiv contains the original IV value.
+  uint8_t oiv[EVP_MAX_IV_LENGTH];
+
+  // iv contains the current IV value, which may have been updated.
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+
+  // buf contains a partial block which is used by, for example, CTR mode to
+  // store unused keystream bytes.
+  uint8_t buf[EVP_MAX_BLOCK_LENGTH];
+
+  // buf_len contains the number of bytes of a partial block contained in
+  // |buf|.
+  int buf_len;
+
+  // num contains the number of bytes of |iv| which are valid for modes that
+  // manage partial blocks themselves.
+  unsigned num;
+
+  // final_used is non-zero if the |final| buffer contains plaintext.
+  int final_used;
+
+  // block_mask contains |cipher->block_size| minus one. (The block size
+  // assumed to be a power of two.)
+  int block_mask;
+
+  uint8_t final[EVP_MAX_BLOCK_LENGTH];  // possible final block
+} /* EVP_CIPHER_CTX */;
+
+typedef struct evp_cipher_info_st {
+  const EVP_CIPHER *cipher;
+  unsigned char iv[EVP_MAX_IV_LENGTH];
+} EVP_CIPHER_INFO;
+
+struct evp_cipher_st {
+  // type contains a NID identifing the cipher. (e.g. NID_aes_128_gcm.)
+  int nid;
+
+  // block_size contains the block size, in bytes, of the cipher, or 1 for a
+  // stream cipher.
+  unsigned block_size;
+
+  // key_len contains the key size, in bytes, for the cipher. If the cipher
+  // takes a variable key size then this contains the default size.
+  unsigned key_len;
+
+  // iv_len contains the IV size, in bytes, or zero if inapplicable.
+  unsigned iv_len;
+
+  // ctx_size contains the size, in bytes, of the per-key context for this
+  // cipher.
+  unsigned ctx_size;
+
+  // flags contains the OR of a number of flags. See |EVP_CIPH_*|.
+  uint32_t flags;
+
+  // app_data is a pointer to opaque, user data.
+  void *app_data;
+
+  int (*init)(EVP_CIPHER_CTX *ctx, const uint8_t *key, const uint8_t *iv,
+              int enc);
+
+  int (*cipher)(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
+                size_t inl);
+
+  // cleanup, if non-NULL, releases memory associated with the context. It is
+  // called if |EVP_CTRL_INIT| succeeds. Note that |init| may not have been
+  // called at this point.
+  void (*cleanup)(EVP_CIPHER_CTX *);
+
+  int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_CIPHER_CTX, EVP_CIPHER_CTX_free)
+
+using ScopedEVP_CIPHER_CTX =
+    internal::StackAllocated<EVP_CIPHER_CTX, int, EVP_CIPHER_CTX_init,
+                             EVP_CIPHER_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define CIPHER_R_AES_KEY_SETUP_FAILED 100
+#define CIPHER_R_BAD_DECRYPT 101
+#define CIPHER_R_BAD_KEY_LENGTH 102
+#define CIPHER_R_BUFFER_TOO_SMALL 103
+#define CIPHER_R_CTRL_NOT_IMPLEMENTED 104
+#define CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED 105
+#define CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH 106
+#define CIPHER_R_INITIALIZATION_ERROR 107
+#define CIPHER_R_INPUT_NOT_INITIALIZED 108
+#define CIPHER_R_INVALID_AD_SIZE 109
+#define CIPHER_R_INVALID_KEY_LENGTH 110
+#define CIPHER_R_INVALID_NONCE_SIZE 111
+#define CIPHER_R_INVALID_OPERATION 112
+#define CIPHER_R_IV_TOO_LARGE 113
+#define CIPHER_R_NO_CIPHER_SET 114
+#define CIPHER_R_OUTPUT_ALIASES_INPUT 115
+#define CIPHER_R_TAG_TOO_LARGE 116
+#define CIPHER_R_TOO_LARGE 117
+#define CIPHER_R_UNSUPPORTED_AD_SIZE 118
+#define CIPHER_R_UNSUPPORTED_INPUT_SIZE 119
+#define CIPHER_R_UNSUPPORTED_KEY_SIZE 120
+#define CIPHER_R_UNSUPPORTED_NONCE_SIZE 121
+#define CIPHER_R_UNSUPPORTED_TAG_SIZE 122
+#define CIPHER_R_WRONG_FINAL_BLOCK_LENGTH 123
+#define CIPHER_R_NO_DIRECTION_SET 124
+#define CIPHER_R_INVALID_NONCE 125
+
+#endif  // OPENSSL_HEADER_CIPHER_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h
new file mode 100644
index 0000000..4c22360
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h	
@@ -0,0 +1,91 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CMAC_H
+#define OPENSSL_HEADER_CMAC_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CMAC.
+//
+// CMAC is a MAC based on AES-CBC and defined in
+// https://tools.ietf.org/html/rfc4493#section-2.3.
+
+
+// One-shot functions.
+
+// AES_CMAC calculates the 16-byte, CMAC authenticator of |in_len| bytes of
+// |in| and writes it to |out|. The |key_len| may be 16 or 32 bytes to select
+// between AES-128 and AES-256. It returns one on success or zero on error.
+OPENSSL_EXPORT int AES_CMAC(uint8_t out[16], const uint8_t *key, size_t key_len,
+                            const uint8_t *in, size_t in_len);
+
+
+// Incremental interface.
+
+// CMAC_CTX_new allocates a fresh |CMAC_CTX| and returns it, or NULL on
+// error.
+OPENSSL_EXPORT CMAC_CTX *CMAC_CTX_new(void);
+
+// CMAC_CTX_free frees a |CMAC_CTX|.
+OPENSSL_EXPORT void CMAC_CTX_free(CMAC_CTX *ctx);
+
+// CMAC_CTX_copy sets |out| to be a duplicate of the current state |in|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in);
+
+// CMAC_Init configures |ctx| to use the given |key| and |cipher|. The CMAC RFC
+// only specifies the use of AES-128 thus |key_len| should be 16 and |cipher|
+// should be |EVP_aes_128_cbc()|. However, this implementation also supports
+// AES-256 by setting |key_len| to 32 and |cipher| to |EVP_aes_256_cbc()|. The
+// |engine| argument is ignored.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t key_len,
+                             const EVP_CIPHER *cipher, ENGINE *engine);
+
+
+// CMAC_Reset resets |ctx| so that a fresh message can be authenticated.
+OPENSSL_EXPORT int CMAC_Reset(CMAC_CTX *ctx);
+
+// CMAC_Update processes |in_len| bytes of message from |in|. It returns one on
+// success or zero on error.
+OPENSSL_EXPORT int CMAC_Update(CMAC_CTX *ctx, const uint8_t *in, size_t in_len);
+
+// CMAC_Final sets |*out_len| to 16 and, if |out| is not NULL, writes 16 bytes
+// of authenticator to it. It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CMAC_CTX, CMAC_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.back
new file mode 100644
index 0000000..3e8cf92
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.back	
@@ -0,0 +1,91 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CMAC_H
+#define OPENSSL_HEADER_CMAC_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CMAC.
+//
+// CMAC is a MAC based on AES-CBC and defined in
+// https://tools.ietf.org/html/rfc4493#section-2.3.
+
+
+// One-shot functions.
+
+// AES_CMAC calculates the 16-byte, CMAC authenticator of |in_len| bytes of
+// |in| and writes it to |out|. The |key_len| may be 16 or 32 bytes to select
+// between AES-128 and AES-256. It returns one on success or zero on error.
+OPENSSL_EXPORT int AES_CMAC(uint8_t out[16], const uint8_t *key, size_t key_len,
+                            const uint8_t *in, size_t in_len);
+
+
+// Incremental interface.
+
+// CMAC_CTX_new allocates a fresh |CMAC_CTX| and returns it, or NULL on
+// error.
+OPENSSL_EXPORT CMAC_CTX *CMAC_CTX_new(void);
+
+// CMAC_CTX_free frees a |CMAC_CTX|.
+OPENSSL_EXPORT void CMAC_CTX_free(CMAC_CTX *ctx);
+
+// CMAC_CTX_copy sets |out| to be a duplicate of the current state |in|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in);
+
+// CMAC_Init configures |ctx| to use the given |key| and |cipher|. The CMAC RFC
+// only specifies the use of AES-128 thus |key_len| should be 16 and |cipher|
+// should be |EVP_aes_128_cbc()|. However, this implementation also supports
+// AES-256 by setting |key_len| to 32 and |cipher| to |EVP_aes_256_cbc()|. The
+// |engine| argument is ignored.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t key_len,
+                             const EVP_CIPHER *cipher, ENGINE *engine);
+
+
+// CMAC_Reset resets |ctx| so that a fresh message can be authenticated.
+OPENSSL_EXPORT int CMAC_Reset(CMAC_CTX *ctx);
+
+// CMAC_Update processes |in_len| bytes of message from |in|. It returns one on
+// success or zero on error.
+OPENSSL_EXPORT int CMAC_Update(CMAC_CTX *ctx, const uint8_t *in, size_t in_len);
+
+// CMAC_Final sets |*out_len| to 16 and, if |out| is not NULL, writes 16 bytes
+// of authenticator to it. It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CMAC_CTX, CMAC_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.grpc_back
new file mode 100644
index 0000000..3e8cf92
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cmac.h.grpc_back	
@@ -0,0 +1,91 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CMAC_H
+#define OPENSSL_HEADER_CMAC_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// CMAC.
+//
+// CMAC is a MAC based on AES-CBC and defined in
+// https://tools.ietf.org/html/rfc4493#section-2.3.
+
+
+// One-shot functions.
+
+// AES_CMAC calculates the 16-byte, CMAC authenticator of |in_len| bytes of
+// |in| and writes it to |out|. The |key_len| may be 16 or 32 bytes to select
+// between AES-128 and AES-256. It returns one on success or zero on error.
+OPENSSL_EXPORT int AES_CMAC(uint8_t out[16], const uint8_t *key, size_t key_len,
+                            const uint8_t *in, size_t in_len);
+
+
+// Incremental interface.
+
+// CMAC_CTX_new allocates a fresh |CMAC_CTX| and returns it, or NULL on
+// error.
+OPENSSL_EXPORT CMAC_CTX *CMAC_CTX_new(void);
+
+// CMAC_CTX_free frees a |CMAC_CTX|.
+OPENSSL_EXPORT void CMAC_CTX_free(CMAC_CTX *ctx);
+
+// CMAC_CTX_copy sets |out| to be a duplicate of the current state |in|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in);
+
+// CMAC_Init configures |ctx| to use the given |key| and |cipher|. The CMAC RFC
+// only specifies the use of AES-128 thus |key_len| should be 16 and |cipher|
+// should be |EVP_aes_128_cbc()|. However, this implementation also supports
+// AES-256 by setting |key_len| to 32 and |cipher| to |EVP_aes_256_cbc()|. The
+// |engine| argument is ignored.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t key_len,
+                             const EVP_CIPHER *cipher, ENGINE *engine);
+
+
+// CMAC_Reset resets |ctx| so that a fresh message can be authenticated.
+OPENSSL_EXPORT int CMAC_Reset(CMAC_CTX *ctx);
+
+// CMAC_Update processes |in_len| bytes of message from |in|. It returns one on
+// success or zero on error.
+OPENSSL_EXPORT int CMAC_Update(CMAC_CTX *ctx, const uint8_t *in, size_t in_len);
+
+// CMAC_Final sets |*out_len| to 16 and, if |out| is not NULL, writes 16 bytes
+// of authenticator to it. It returns one on success or zero on error.
+OPENSSL_EXPORT int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CMAC_CTX, CMAC_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h
new file mode 100644
index 0000000..30c6c44
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h	
@@ -0,0 +1,180 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CONF_H
+#define OPENSSL_HEADER_CONF_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/lhash.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Config files look like:
+//
+//   # Comment
+//
+//   # This key is in the default section.
+//   key=value
+//
+//   [section_name]
+//   key2=value2
+//
+// Config files are represented by a |CONF|.
+
+struct conf_value_st {
+  char *section;
+  char *name;
+  char *value;
+};
+
+DEFINE_STACK_OF(CONF_VALUE)
+DECLARE_LHASH_OF(CONF_VALUE)
+
+
+// NCONF_new returns a fresh, empty |CONF|, or NULL on error. The |method|
+// argument must be NULL.
+OPENSSL_EXPORT CONF *NCONF_new(void *method);
+
+// NCONF_free frees all the data owned by |conf| and then |conf| itself.
+OPENSSL_EXPORT void NCONF_free(CONF *conf);
+
+// NCONF_load parses the file named |filename| and adds the values found to
+// |conf|. It returns one on success and zero on error. In the event of an
+// error, if |out_error_line| is not NULL, |*out_error_line| is set to the
+// number of the line that contained the error.
+int NCONF_load(CONF *conf, const char *filename, long *out_error_line);
+
+// NCONF_load_bio acts like |NCONF_load| but reads from |bio| rather than from
+// a named file.
+int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line);
+
+// NCONF_get_section returns a stack of values for a given section in |conf|.
+// If |section| is NULL, the default section is returned. It returns NULL on
+// error.
+STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section);
+
+// NCONF_get_string returns the value of the key |name|, in section |section|.
+// The |section| argument may be NULL to indicate the default section. It
+// returns the value or NULL on error.
+const char *NCONF_get_string(const CONF *conf, const char *section,
+                             const char *name);
+
+
+// Utility functions
+
+// CONF_parse_list takes a list separated by 'sep' and calls |list_cb| giving
+// the start and length of each member, optionally stripping leading and
+// trailing whitespace. This can be used to parse comma separated lists for
+// example. If |list_cb| returns <= 0, then the iteration is halted and that
+// value is returned immediately. Otherwise it returns one. Note that |list_cb|
+// may be called on an empty member.
+int CONF_parse_list(const char *list, char sep, int remove_whitespace,
+                    int (*list_cb)(const char *elem, int len, void *usr),
+                    void *arg);
+
+
+// Deprecated functions
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CONF_MFLAGS_DEFAULT_SECTION 0
+#define CONF_MFLAGS_IGNORE_MISSING_FILE 0
+
+// CONF_modules_load_file returns one. BoringSSL is defined to have no config
+// file options, thus loading from |filename| always succeeds by doing nothing.
+OPENSSL_EXPORT int CONF_modules_load_file(const char *filename,
+                                          const char *appname,
+                                          unsigned long flags);
+
+// CONF_modules_free does nothing.
+OPENSSL_EXPORT void CONF_modules_free(void);
+
+// OPENSSL_config does nothing.
+OPENSSL_EXPORT void OPENSSL_config(const char *config_name);
+
+// OPENSSL_no_config does nothing.
+OPENSSL_EXPORT void OPENSSL_no_config(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CONF, NCONF_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define CONF_R_LIST_CANNOT_BE_NULL 100
+#define CONF_R_MISSING_CLOSE_SQUARE_BRACKET 101
+#define CONF_R_MISSING_EQUAL_SIGN 102
+#define CONF_R_NO_CLOSE_BRACE 103
+#define CONF_R_UNABLE_TO_CREATE_NEW_SECTION 104
+#define CONF_R_VARIABLE_HAS_NO_VALUE 105
+#define CONF_R_VARIABLE_EXPANSION_TOO_LONG 106
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.back
new file mode 100644
index 0000000..ae71869
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.back	
@@ -0,0 +1,180 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CONF_H
+#define OPENSSL_HEADER_CONF_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+#include <openssl/lhash.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Config files look like:
+//
+//   # Comment
+//
+//   # This key is in the default section.
+//   key=value
+//
+//   [section_name]
+//   key2=value2
+//
+// Config files are represented by a |CONF|.
+
+struct conf_value_st {
+  char *section;
+  char *name;
+  char *value;
+};
+
+DEFINE_STACK_OF(CONF_VALUE)
+DECLARE_LHASH_OF(CONF_VALUE)
+
+
+// NCONF_new returns a fresh, empty |CONF|, or NULL on error. The |method|
+// argument must be NULL.
+OPENSSL_EXPORT CONF *NCONF_new(void *method);
+
+// NCONF_free frees all the data owned by |conf| and then |conf| itself.
+OPENSSL_EXPORT void NCONF_free(CONF *conf);
+
+// NCONF_load parses the file named |filename| and adds the values found to
+// |conf|. It returns one on success and zero on error. In the event of an
+// error, if |out_error_line| is not NULL, |*out_error_line| is set to the
+// number of the line that contained the error.
+int NCONF_load(CONF *conf, const char *filename, long *out_error_line);
+
+// NCONF_load_bio acts like |NCONF_load| but reads from |bio| rather than from
+// a named file.
+int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line);
+
+// NCONF_get_section returns a stack of values for a given section in |conf|.
+// If |section| is NULL, the default section is returned. It returns NULL on
+// error.
+STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section);
+
+// NCONF_get_string returns the value of the key |name|, in section |section|.
+// The |section| argument may be NULL to indicate the default section. It
+// returns the value or NULL on error.
+const char *NCONF_get_string(const CONF *conf, const char *section,
+                             const char *name);
+
+
+// Utility functions
+
+// CONF_parse_list takes a list separated by 'sep' and calls |list_cb| giving
+// the start and length of each member, optionally stripping leading and
+// trailing whitespace. This can be used to parse comma separated lists for
+// example. If |list_cb| returns <= 0, then the iteration is halted and that
+// value is returned immediately. Otherwise it returns one. Note that |list_cb|
+// may be called on an empty member.
+int CONF_parse_list(const char *list, char sep, int remove_whitespace,
+                    int (*list_cb)(const char *elem, int len, void *usr),
+                    void *arg);
+
+
+// Deprecated functions
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CONF_MFLAGS_DEFAULT_SECTION 0
+#define CONF_MFLAGS_IGNORE_MISSING_FILE 0
+
+// CONF_modules_load_file returns one. BoringSSL is defined to have no config
+// file options, thus loading from |filename| always succeeds by doing nothing.
+OPENSSL_EXPORT int CONF_modules_load_file(const char *filename,
+                                          const char *appname,
+                                          unsigned long flags);
+
+// CONF_modules_free does nothing.
+OPENSSL_EXPORT void CONF_modules_free(void);
+
+// OPENSSL_config does nothing.
+OPENSSL_EXPORT void OPENSSL_config(const char *config_name);
+
+// OPENSSL_no_config does nothing.
+OPENSSL_EXPORT void OPENSSL_no_config(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CONF, NCONF_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define CONF_R_LIST_CANNOT_BE_NULL 100
+#define CONF_R_MISSING_CLOSE_SQUARE_BRACKET 101
+#define CONF_R_MISSING_EQUAL_SIGN 102
+#define CONF_R_NO_CLOSE_BRACE 103
+#define CONF_R_UNABLE_TO_CREATE_NEW_SECTION 104
+#define CONF_R_VARIABLE_HAS_NO_VALUE 105
+#define CONF_R_VARIABLE_EXPANSION_TOO_LONG 106
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.grpc_back
new file mode 100644
index 0000000..ae71869
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/conf.h.grpc_back	
@@ -0,0 +1,180 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_CONF_H
+#define OPENSSL_HEADER_CONF_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+#include <openssl/lhash.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Config files look like:
+//
+//   # Comment
+//
+//   # This key is in the default section.
+//   key=value
+//
+//   [section_name]
+//   key2=value2
+//
+// Config files are represented by a |CONF|.
+
+struct conf_value_st {
+  char *section;
+  char *name;
+  char *value;
+};
+
+DEFINE_STACK_OF(CONF_VALUE)
+DECLARE_LHASH_OF(CONF_VALUE)
+
+
+// NCONF_new returns a fresh, empty |CONF|, or NULL on error. The |method|
+// argument must be NULL.
+OPENSSL_EXPORT CONF *NCONF_new(void *method);
+
+// NCONF_free frees all the data owned by |conf| and then |conf| itself.
+OPENSSL_EXPORT void NCONF_free(CONF *conf);
+
+// NCONF_load parses the file named |filename| and adds the values found to
+// |conf|. It returns one on success and zero on error. In the event of an
+// error, if |out_error_line| is not NULL, |*out_error_line| is set to the
+// number of the line that contained the error.
+int NCONF_load(CONF *conf, const char *filename, long *out_error_line);
+
+// NCONF_load_bio acts like |NCONF_load| but reads from |bio| rather than from
+// a named file.
+int NCONF_load_bio(CONF *conf, BIO *bio, long *out_error_line);
+
+// NCONF_get_section returns a stack of values for a given section in |conf|.
+// If |section| is NULL, the default section is returned. It returns NULL on
+// error.
+STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section);
+
+// NCONF_get_string returns the value of the key |name|, in section |section|.
+// The |section| argument may be NULL to indicate the default section. It
+// returns the value or NULL on error.
+const char *NCONF_get_string(const CONF *conf, const char *section,
+                             const char *name);
+
+
+// Utility functions
+
+// CONF_parse_list takes a list separated by 'sep' and calls |list_cb| giving
+// the start and length of each member, optionally stripping leading and
+// trailing whitespace. This can be used to parse comma separated lists for
+// example. If |list_cb| returns <= 0, then the iteration is halted and that
+// value is returned immediately. Otherwise it returns one. Note that |list_cb|
+// may be called on an empty member.
+int CONF_parse_list(const char *list, char sep, int remove_whitespace,
+                    int (*list_cb)(const char *elem, int len, void *usr),
+                    void *arg);
+
+
+// Deprecated functions
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CONF_MFLAGS_DEFAULT_SECTION 0
+#define CONF_MFLAGS_IGNORE_MISSING_FILE 0
+
+// CONF_modules_load_file returns one. BoringSSL is defined to have no config
+// file options, thus loading from |filename| always succeeds by doing nothing.
+OPENSSL_EXPORT int CONF_modules_load_file(const char *filename,
+                                          const char *appname,
+                                          unsigned long flags);
+
+// CONF_modules_free does nothing.
+OPENSSL_EXPORT void CONF_modules_free(void);
+
+// OPENSSL_config does nothing.
+OPENSSL_EXPORT void OPENSSL_config(const char *config_name);
+
+// OPENSSL_no_config does nothing.
+OPENSSL_EXPORT void OPENSSL_no_config(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CONF, NCONF_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define CONF_R_LIST_CANNOT_BE_NULL 100
+#define CONF_R_MISSING_CLOSE_SQUARE_BRACKET 101
+#define CONF_R_MISSING_EQUAL_SIGN 102
+#define CONF_R_NO_CLOSE_BRACE 103
+#define CONF_R_UNABLE_TO_CREATE_NEW_SECTION 104
+#define CONF_R_VARIABLE_HAS_NO_VALUE 105
+#define CONF_R_VARIABLE_EXPANSION_TOO_LONG 106
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h
new file mode 100644
index 0000000..fc8deef
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h	
@@ -0,0 +1,212 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CPU_H
+#define OPENSSL_HEADER_CPU_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Runtime CPU feature support
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// OPENSSL_ia32cap_P contains the Intel CPUID bits when running on an x86 or
+// x86-64 system.
+//
+//   Index 0:
+//     EDX for CPUID where EAX = 1
+//     Bit 20 is always zero
+//     Bit 28 is adjusted to reflect whether the data cache is shared between
+//       multiple logical cores
+//     Bit 30 is used to indicate an Intel CPU
+//   Index 1:
+//     ECX for CPUID where EAX = 1
+//     Bit 11 is used to indicate AMD XOP support, not SDBG
+//   Index 2:
+//     EBX for CPUID where EAX = 7
+//   Index 3:
+//     ECX for CPUID where EAX = 7
+//
+// Note: the CPUID bits are pre-adjusted for the OSXSAVE bit and the YMM and XMM
+// bits in XCR0, so it is not necessary to check those.
+extern uint32_t OPENSSL_ia32cap_P[4];
+
+#if defined(BORINGSSL_FIPS) && !defined(BORINGSSL_SHARED_LIBRARY)
+const uint32_t *OPENSSL_ia32cap_get(void);
+#else
+OPENSSL_INLINE const uint32_t *OPENSSL_ia32cap_get(void) {
+  return OPENSSL_ia32cap_P;
+}
+#endif
+
+#endif
+
+#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#if defined(OPENSSL_APPLE)
+// iOS builds use the static ARM configuration.
+#define OPENSSL_STATIC_ARMCAP
+#endif
+
+#if !defined(OPENSSL_STATIC_ARMCAP)
+
+// CRYPTO_is_NEON_capable_at_runtime returns true if the current CPU has a NEON
+// unit. Note that |OPENSSL_armcap_P| also exists and contains the same
+// information in a form that's easier for assembly to use.
+OPENSSL_EXPORT char CRYPTO_is_NEON_capable_at_runtime(void);
+
+// CRYPTO_is_NEON_capable returns true if the current CPU has a NEON unit. If
+// this is known statically then it returns one immediately.
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+  // Only statically skip the runtime lookup on aarch64. On arm, one CPU is
+  // known to have a broken NEON unit which is known to fail with on some
+  // hand-written NEON assembly. For now, continue to apply the workaround even
+  // when the compiler is instructed to freely emit NEON code. See
+  // https://crbug.com/341598 and https://crbug.com/606629.
+#if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && !defined(OPENSSL_ARM)
+  return 1;
+#else
+  return CRYPTO_is_NEON_capable_at_runtime();
+#endif
+}
+
+#if defined(OPENSSL_ARM)
+// CRYPTO_has_broken_NEON returns one if the current CPU is known to have a
+// broken NEON unit. See https://crbug.com/341598.
+OPENSSL_EXPORT int CRYPTO_has_broken_NEON(void);
+
+// CRYPTO_needs_hwcap2_workaround returns one if the ARMv8 AArch32 AT_HWCAP2
+// workaround was needed. See https://crbug.com/boringssl/46.
+OPENSSL_EXPORT int CRYPTO_needs_hwcap2_workaround(void);
+#endif
+
+// CRYPTO_is_ARMv8_AES_capable returns true if the current CPU supports the
+// ARMv8 AES instruction.
+int CRYPTO_is_ARMv8_AES_capable(void);
+
+// CRYPTO_is_ARMv8_PMULL_capable returns true if the current CPU supports the
+// ARMv8 PMULL instruction.
+int CRYPTO_is_ARMv8_PMULL_capable(void);
+
+#else
+
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_AES_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_PMULL_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+#endif  // OPENSSL_STATIC_ARMCAP
+#endif  // OPENSSL_ARM || OPENSSL_AARCH64
+
+#if defined(OPENSSL_PPC64LE)
+
+// CRYPTO_is_PPC64LE_vcrypto_capable returns true iff the current CPU supports
+// the Vector.AES category of instructions.
+int CRYPTO_is_PPC64LE_vcrypto_capable(void);
+
+extern unsigned long OPENSSL_ppc64le_hwcap2;
+
+#endif  // OPENSSL_PPC64LE
+
+#if defined(BORINGSSL_DISPATCH_TEST)
+// Runtime CPU dispatch testing support
+
+// BORINGSSL_function_hit is an array of flags. The following functions will
+// set these flags if BORINGSSL_DISPATCH_TEST is defined.
+//   0: aes_hw_ctr32_encrypt_blocks
+//   1: aes_hw_encrypt
+//   2: aesni_gcm_encrypt
+//   3: aes_hw_set_encrypt_key
+//   4: vpaes_encrypt
+//   5: vpaes_set_encrypt_key
+extern uint8_t BORINGSSL_function_hit[7];
+#endif  // BORINGSSL_DISPATCH_TEST
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CPU_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.back
new file mode 100644
index 0000000..ae55967
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.back	
@@ -0,0 +1,212 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CPU_H
+#define OPENSSL_HEADER_CPU_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Runtime CPU feature support
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// OPENSSL_ia32cap_P contains the Intel CPUID bits when running on an x86 or
+// x86-64 system.
+//
+//   Index 0:
+//     EDX for CPUID where EAX = 1
+//     Bit 20 is always zero
+//     Bit 28 is adjusted to reflect whether the data cache is shared between
+//       multiple logical cores
+//     Bit 30 is used to indicate an Intel CPU
+//   Index 1:
+//     ECX for CPUID where EAX = 1
+//     Bit 11 is used to indicate AMD XOP support, not SDBG
+//   Index 2:
+//     EBX for CPUID where EAX = 7
+//   Index 3:
+//     ECX for CPUID where EAX = 7
+//
+// Note: the CPUID bits are pre-adjusted for the OSXSAVE bit and the YMM and XMM
+// bits in XCR0, so it is not necessary to check those.
+extern uint32_t OPENSSL_ia32cap_P[4];
+
+#if defined(BORINGSSL_FIPS) && !defined(BORINGSSL_SHARED_LIBRARY)
+const uint32_t *OPENSSL_ia32cap_get(void);
+#else
+OPENSSL_INLINE const uint32_t *OPENSSL_ia32cap_get(void) {
+  return OPENSSL_ia32cap_P;
+}
+#endif
+
+#endif
+
+#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#if defined(OPENSSL_APPLE)
+// iOS builds use the static ARM configuration.
+#define OPENSSL_STATIC_ARMCAP
+#endif
+
+#if !defined(OPENSSL_STATIC_ARMCAP)
+
+// CRYPTO_is_NEON_capable_at_runtime returns true if the current CPU has a NEON
+// unit. Note that |OPENSSL_armcap_P| also exists and contains the same
+// information in a form that's easier for assembly to use.
+OPENSSL_EXPORT char CRYPTO_is_NEON_capable_at_runtime(void);
+
+// CRYPTO_is_NEON_capable returns true if the current CPU has a NEON unit. If
+// this is known statically then it returns one immediately.
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+  // Only statically skip the runtime lookup on aarch64. On arm, one CPU is
+  // known to have a broken NEON unit which is known to fail with on some
+  // hand-written NEON assembly. For now, continue to apply the workaround even
+  // when the compiler is instructed to freely emit NEON code. See
+  // https://crbug.com/341598 and https://crbug.com/606629.
+#if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && !defined(OPENSSL_ARM)
+  return 1;
+#else
+  return CRYPTO_is_NEON_capable_at_runtime();
+#endif
+}
+
+#if defined(OPENSSL_ARM)
+// CRYPTO_has_broken_NEON returns one if the current CPU is known to have a
+// broken NEON unit. See https://crbug.com/341598.
+OPENSSL_EXPORT int CRYPTO_has_broken_NEON(void);
+
+// CRYPTO_needs_hwcap2_workaround returns one if the ARMv8 AArch32 AT_HWCAP2
+// workaround was needed. See https://crbug.com/boringssl/46.
+OPENSSL_EXPORT int CRYPTO_needs_hwcap2_workaround(void);
+#endif
+
+// CRYPTO_is_ARMv8_AES_capable returns true if the current CPU supports the
+// ARMv8 AES instruction.
+int CRYPTO_is_ARMv8_AES_capable(void);
+
+// CRYPTO_is_ARMv8_PMULL_capable returns true if the current CPU supports the
+// ARMv8 PMULL instruction.
+int CRYPTO_is_ARMv8_PMULL_capable(void);
+
+#else
+
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_AES_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_PMULL_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+#endif  // OPENSSL_STATIC_ARMCAP
+#endif  // OPENSSL_ARM || OPENSSL_AARCH64
+
+#if defined(OPENSSL_PPC64LE)
+
+// CRYPTO_is_PPC64LE_vcrypto_capable returns true iff the current CPU supports
+// the Vector.AES category of instructions.
+int CRYPTO_is_PPC64LE_vcrypto_capable(void);
+
+extern unsigned long OPENSSL_ppc64le_hwcap2;
+
+#endif  // OPENSSL_PPC64LE
+
+#if defined(BORINGSSL_DISPATCH_TEST)
+// Runtime CPU dispatch testing support
+
+// BORINGSSL_function_hit is an array of flags. The following functions will
+// set these flags if BORINGSSL_DISPATCH_TEST is defined.
+//   0: aes_hw_ctr32_encrypt_blocks
+//   1: aes_hw_encrypt
+//   2: aesni_gcm_encrypt
+//   3: aes_hw_set_encrypt_key
+//   4: vpaes_encrypt
+//   5: vpaes_set_encrypt_key
+extern uint8_t BORINGSSL_function_hit[7];
+#endif  // BORINGSSL_DISPATCH_TEST
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CPU_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.grpc_back
new file mode 100644
index 0000000..ae55967
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/cpu.h.grpc_back	
@@ -0,0 +1,212 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CPU_H
+#define OPENSSL_HEADER_CPU_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Runtime CPU feature support
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// OPENSSL_ia32cap_P contains the Intel CPUID bits when running on an x86 or
+// x86-64 system.
+//
+//   Index 0:
+//     EDX for CPUID where EAX = 1
+//     Bit 20 is always zero
+//     Bit 28 is adjusted to reflect whether the data cache is shared between
+//       multiple logical cores
+//     Bit 30 is used to indicate an Intel CPU
+//   Index 1:
+//     ECX for CPUID where EAX = 1
+//     Bit 11 is used to indicate AMD XOP support, not SDBG
+//   Index 2:
+//     EBX for CPUID where EAX = 7
+//   Index 3:
+//     ECX for CPUID where EAX = 7
+//
+// Note: the CPUID bits are pre-adjusted for the OSXSAVE bit and the YMM and XMM
+// bits in XCR0, so it is not necessary to check those.
+extern uint32_t OPENSSL_ia32cap_P[4];
+
+#if defined(BORINGSSL_FIPS) && !defined(BORINGSSL_SHARED_LIBRARY)
+const uint32_t *OPENSSL_ia32cap_get(void);
+#else
+OPENSSL_INLINE const uint32_t *OPENSSL_ia32cap_get(void) {
+  return OPENSSL_ia32cap_P;
+}
+#endif
+
+#endif
+
+#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#if defined(OPENSSL_APPLE)
+// iOS builds use the static ARM configuration.
+#define OPENSSL_STATIC_ARMCAP
+#endif
+
+#if !defined(OPENSSL_STATIC_ARMCAP)
+
+// CRYPTO_is_NEON_capable_at_runtime returns true if the current CPU has a NEON
+// unit. Note that |OPENSSL_armcap_P| also exists and contains the same
+// information in a form that's easier for assembly to use.
+OPENSSL_EXPORT char CRYPTO_is_NEON_capable_at_runtime(void);
+
+// CRYPTO_is_NEON_capable returns true if the current CPU has a NEON unit. If
+// this is known statically then it returns one immediately.
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+  // Only statically skip the runtime lookup on aarch64. On arm, one CPU is
+  // known to have a broken NEON unit which is known to fail with on some
+  // hand-written NEON assembly. For now, continue to apply the workaround even
+  // when the compiler is instructed to freely emit NEON code. See
+  // https://crbug.com/341598 and https://crbug.com/606629.
+#if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && !defined(OPENSSL_ARM)
+  return 1;
+#else
+  return CRYPTO_is_NEON_capable_at_runtime();
+#endif
+}
+
+#if defined(OPENSSL_ARM)
+// CRYPTO_has_broken_NEON returns one if the current CPU is known to have a
+// broken NEON unit. See https://crbug.com/341598.
+OPENSSL_EXPORT int CRYPTO_has_broken_NEON(void);
+
+// CRYPTO_needs_hwcap2_workaround returns one if the ARMv8 AArch32 AT_HWCAP2
+// workaround was needed. See https://crbug.com/boringssl/46.
+OPENSSL_EXPORT int CRYPTO_needs_hwcap2_workaround(void);
+#endif
+
+// CRYPTO_is_ARMv8_AES_capable returns true if the current CPU supports the
+// ARMv8 AES instruction.
+int CRYPTO_is_ARMv8_AES_capable(void);
+
+// CRYPTO_is_ARMv8_PMULL_capable returns true if the current CPU supports the
+// ARMv8 PMULL instruction.
+int CRYPTO_is_ARMv8_PMULL_capable(void);
+
+#else
+
+OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || \
+    (defined(__ARM_NEON__) || defined(__ARM_NEON))
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_AES_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+OPENSSL_INLINE int CRYPTO_is_ARMv8_PMULL_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+  return 1;
+#else
+  return 0;
+#endif
+}
+
+#endif  // OPENSSL_STATIC_ARMCAP
+#endif  // OPENSSL_ARM || OPENSSL_AARCH64
+
+#if defined(OPENSSL_PPC64LE)
+
+// CRYPTO_is_PPC64LE_vcrypto_capable returns true iff the current CPU supports
+// the Vector.AES category of instructions.
+int CRYPTO_is_PPC64LE_vcrypto_capable(void);
+
+extern unsigned long OPENSSL_ppc64le_hwcap2;
+
+#endif  // OPENSSL_PPC64LE
+
+#if defined(BORINGSSL_DISPATCH_TEST)
+// Runtime CPU dispatch testing support
+
+// BORINGSSL_function_hit is an array of flags. The following functions will
+// set these flags if BORINGSSL_DISPATCH_TEST is defined.
+//   0: aes_hw_ctr32_encrypt_blocks
+//   1: aes_hw_encrypt
+//   2: aesni_gcm_encrypt
+//   3: aes_hw_set_encrypt_key
+//   4: vpaes_encrypt
+//   5: vpaes_set_encrypt_key
+extern uint8_t BORINGSSL_function_hit[7];
+#endif  // BORINGSSL_DISPATCH_TEST
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CPU_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h
new file mode 100644
index 0000000..63120a9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h	
@@ -0,0 +1,144 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_H
+#define OPENSSL_HEADER_CRYPTO_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/sha.h>
+
+// Upstream OpenSSL defines |OPENSSL_malloc|, etc., in crypto.h rather than
+// mem.h.
+#include <openssl_grpc/mem.h>
+
+// Upstream OpenSSL defines |CRYPTO_LOCK|, etc., in crypto.h rather than
+// thread.h.
+#include <openssl_grpc/thread.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// crypto.h contains functions for initializing the crypto library.
+
+
+// CRYPTO_library_init initializes the crypto library. It must be called if the
+// library is built with BORINGSSL_NO_STATIC_INITIALIZER. Otherwise, it does
+// nothing and a static initializer is used instead. It is safe to call this
+// function multiple times and concurrently from multiple threads.
+//
+// On some ARM configurations, this function may require filesystem access and
+// should be called before entering a sandbox.
+OPENSSL_EXPORT void CRYPTO_library_init(void);
+
+// CRYPTO_is_confidential_build returns one if the linked version of BoringSSL
+// has been built with the BORINGSSL_CONFIDENTIAL define and zero otherwise.
+//
+// This is used by some consumers to identify whether they are using an
+// internal version of BoringSSL.
+OPENSSL_EXPORT int CRYPTO_is_confidential_build(void);
+
+// CRYPTO_has_asm returns one unless BoringSSL was built with OPENSSL_NO_ASM,
+// in which case it returns zero.
+OPENSSL_EXPORT int CRYPTO_has_asm(void);
+
+// FIPS_mode returns zero unless BoringSSL is built with BORINGSSL_FIPS, in
+// which case it returns one.
+OPENSSL_EXPORT int FIPS_mode(void);
+
+// BORINGSSL_self_test triggers the FIPS KAT-based self tests. It returns one on
+// success and zero on error. The argument is the integrity hash of the FIPS
+// module and may be used to check and write flag files to suppress duplicate
+// self-tests. If it is all zeros, no flag file will be checked nor written and
+// tests will always be run.
+OPENSSL_EXPORT int BORINGSSL_self_test(void);
+
+
+// Deprecated functions.
+
+// OPENSSL_VERSION_TEXT contains a string the identifies the version of
+// “OpenSSL”. node.js requires a version number in this text.
+#define OPENSSL_VERSION_TEXT "OpenSSL 1.1.0 (compatible; BoringSSL)"
+
+#define OPENSSL_VERSION 0
+#define OPENSSL_CFLAGS 1
+#define OPENSSL_BUILT_ON 2
+#define OPENSSL_PLATFORM 3
+#define OPENSSL_DIR 4
+
+// OpenSSL_version is a compatibility function that returns the string
+// "BoringSSL" if |which| is |OPENSSL_VERSION| and placeholder strings
+// otherwise.
+OPENSSL_EXPORT const char *OpenSSL_version(int which);
+
+#define SSLEAY_VERSION OPENSSL_VERSION
+#define SSLEAY_CFLAGS OPENSSL_CFLAGS
+#define SSLEAY_BUILT_ON OPENSSL_BUILT_ON
+#define SSLEAY_PLATFORM OPENSSL_PLATFORM
+#define SSLEAY_DIR OPENSSL_DIR
+
+// SSLeay_version calls |OpenSSL_version|.
+OPENSSL_EXPORT const char *SSLeay_version(int which);
+
+// SSLeay is a compatibility function that returns OPENSSL_VERSION_NUMBER from
+// base.h.
+OPENSSL_EXPORT unsigned long SSLeay(void);
+
+// OpenSSL_version_num is a compatibility function that returns
+// OPENSSL_VERSION_NUMBER from base.h.
+OPENSSL_EXPORT unsigned long OpenSSL_version_num(void);
+
+// CRYPTO_malloc_init returns one.
+OPENSSL_EXPORT int CRYPTO_malloc_init(void);
+
+// OPENSSL_malloc_init returns one.
+OPENSSL_EXPORT int OPENSSL_malloc_init(void);
+
+// ENGINE_load_builtin_engines does nothing.
+OPENSSL_EXPORT void ENGINE_load_builtin_engines(void);
+
+// ENGINE_register_all_complete returns one.
+OPENSSL_EXPORT int ENGINE_register_all_complete(void);
+
+// OPENSSL_load_builtin_modules does nothing.
+OPENSSL_EXPORT void OPENSSL_load_builtin_modules(void);
+
+#define OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_NO_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_NO_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_LOAD_CONFIG 0
+#define OPENSSL_INIT_NO_LOAD_CONFIG 0
+
+// OPENSSL_init_crypto calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_crypto(uint64_t opts,
+                                       const OPENSSL_INIT_SETTINGS *settings);
+
+// OPENSSL_cleanup does nothing.
+OPENSSL_EXPORT void OPENSSL_cleanup(void);
+
+// FIPS_mode_set returns one if |on| matches whether BoringSSL was built with
+// |BORINGSSL_FIPS| and zero otherwise.
+OPENSSL_EXPORT int FIPS_mode_set(int on);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.back
new file mode 100644
index 0000000..6aa661a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.back	
@@ -0,0 +1,144 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_H
+#define OPENSSL_HEADER_CRYPTO_H
+
+#include <openssl/base.h>
+#include <openssl/sha.h>
+
+// Upstream OpenSSL defines |OPENSSL_malloc|, etc., in crypto.h rather than
+// mem.h.
+#include <openssl/mem.h>
+
+// Upstream OpenSSL defines |CRYPTO_LOCK|, etc., in crypto.h rather than
+// thread.h.
+#include <openssl/thread.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// crypto.h contains functions for initializing the crypto library.
+
+
+// CRYPTO_library_init initializes the crypto library. It must be called if the
+// library is built with BORINGSSL_NO_STATIC_INITIALIZER. Otherwise, it does
+// nothing and a static initializer is used instead. It is safe to call this
+// function multiple times and concurrently from multiple threads.
+//
+// On some ARM configurations, this function may require filesystem access and
+// should be called before entering a sandbox.
+OPENSSL_EXPORT void CRYPTO_library_init(void);
+
+// CRYPTO_is_confidential_build returns one if the linked version of BoringSSL
+// has been built with the BORINGSSL_CONFIDENTIAL define and zero otherwise.
+//
+// This is used by some consumers to identify whether they are using an
+// internal version of BoringSSL.
+OPENSSL_EXPORT int CRYPTO_is_confidential_build(void);
+
+// CRYPTO_has_asm returns one unless BoringSSL was built with OPENSSL_NO_ASM,
+// in which case it returns zero.
+OPENSSL_EXPORT int CRYPTO_has_asm(void);
+
+// FIPS_mode returns zero unless BoringSSL is built with BORINGSSL_FIPS, in
+// which case it returns one.
+OPENSSL_EXPORT int FIPS_mode(void);
+
+// BORINGSSL_self_test triggers the FIPS KAT-based self tests. It returns one on
+// success and zero on error. The argument is the integrity hash of the FIPS
+// module and may be used to check and write flag files to suppress duplicate
+// self-tests. If it is all zeros, no flag file will be checked nor written and
+// tests will always be run.
+OPENSSL_EXPORT int BORINGSSL_self_test(void);
+
+
+// Deprecated functions.
+
+// OPENSSL_VERSION_TEXT contains a string the identifies the version of
+// “OpenSSL”. node.js requires a version number in this text.
+#define OPENSSL_VERSION_TEXT "OpenSSL 1.1.0 (compatible; BoringSSL)"
+
+#define OPENSSL_VERSION 0
+#define OPENSSL_CFLAGS 1
+#define OPENSSL_BUILT_ON 2
+#define OPENSSL_PLATFORM 3
+#define OPENSSL_DIR 4
+
+// OpenSSL_version is a compatibility function that returns the string
+// "BoringSSL" if |which| is |OPENSSL_VERSION| and placeholder strings
+// otherwise.
+OPENSSL_EXPORT const char *OpenSSL_version(int which);
+
+#define SSLEAY_VERSION OPENSSL_VERSION
+#define SSLEAY_CFLAGS OPENSSL_CFLAGS
+#define SSLEAY_BUILT_ON OPENSSL_BUILT_ON
+#define SSLEAY_PLATFORM OPENSSL_PLATFORM
+#define SSLEAY_DIR OPENSSL_DIR
+
+// SSLeay_version calls |OpenSSL_version|.
+OPENSSL_EXPORT const char *SSLeay_version(int which);
+
+// SSLeay is a compatibility function that returns OPENSSL_VERSION_NUMBER from
+// base.h.
+OPENSSL_EXPORT unsigned long SSLeay(void);
+
+// OpenSSL_version_num is a compatibility function that returns
+// OPENSSL_VERSION_NUMBER from base.h.
+OPENSSL_EXPORT unsigned long OpenSSL_version_num(void);
+
+// CRYPTO_malloc_init returns one.
+OPENSSL_EXPORT int CRYPTO_malloc_init(void);
+
+// OPENSSL_malloc_init returns one.
+OPENSSL_EXPORT int OPENSSL_malloc_init(void);
+
+// ENGINE_load_builtin_engines does nothing.
+OPENSSL_EXPORT void ENGINE_load_builtin_engines(void);
+
+// ENGINE_register_all_complete returns one.
+OPENSSL_EXPORT int ENGINE_register_all_complete(void);
+
+// OPENSSL_load_builtin_modules does nothing.
+OPENSSL_EXPORT void OPENSSL_load_builtin_modules(void);
+
+#define OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_NO_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_NO_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_LOAD_CONFIG 0
+#define OPENSSL_INIT_NO_LOAD_CONFIG 0
+
+// OPENSSL_init_crypto calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_crypto(uint64_t opts,
+                                       const OPENSSL_INIT_SETTINGS *settings);
+
+// OPENSSL_cleanup does nothing.
+OPENSSL_EXPORT void OPENSSL_cleanup(void);
+
+// FIPS_mode_set returns one if |on| matches whether BoringSSL was built with
+// |BORINGSSL_FIPS| and zero otherwise.
+OPENSSL_EXPORT int FIPS_mode_set(int on);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.grpc_back
new file mode 100644
index 0000000..6aa661a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/crypto.h.grpc_back	
@@ -0,0 +1,144 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_H
+#define OPENSSL_HEADER_CRYPTO_H
+
+#include <openssl/base.h>
+#include <openssl/sha.h>
+
+// Upstream OpenSSL defines |OPENSSL_malloc|, etc., in crypto.h rather than
+// mem.h.
+#include <openssl/mem.h>
+
+// Upstream OpenSSL defines |CRYPTO_LOCK|, etc., in crypto.h rather than
+// thread.h.
+#include <openssl/thread.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// crypto.h contains functions for initializing the crypto library.
+
+
+// CRYPTO_library_init initializes the crypto library. It must be called if the
+// library is built with BORINGSSL_NO_STATIC_INITIALIZER. Otherwise, it does
+// nothing and a static initializer is used instead. It is safe to call this
+// function multiple times and concurrently from multiple threads.
+//
+// On some ARM configurations, this function may require filesystem access and
+// should be called before entering a sandbox.
+OPENSSL_EXPORT void CRYPTO_library_init(void);
+
+// CRYPTO_is_confidential_build returns one if the linked version of BoringSSL
+// has been built with the BORINGSSL_CONFIDENTIAL define and zero otherwise.
+//
+// This is used by some consumers to identify whether they are using an
+// internal version of BoringSSL.
+OPENSSL_EXPORT int CRYPTO_is_confidential_build(void);
+
+// CRYPTO_has_asm returns one unless BoringSSL was built with OPENSSL_NO_ASM,
+// in which case it returns zero.
+OPENSSL_EXPORT int CRYPTO_has_asm(void);
+
+// FIPS_mode returns zero unless BoringSSL is built with BORINGSSL_FIPS, in
+// which case it returns one.
+OPENSSL_EXPORT int FIPS_mode(void);
+
+// BORINGSSL_self_test triggers the FIPS KAT-based self tests. It returns one on
+// success and zero on error. The argument is the integrity hash of the FIPS
+// module and may be used to check and write flag files to suppress duplicate
+// self-tests. If it is all zeros, no flag file will be checked nor written and
+// tests will always be run.
+OPENSSL_EXPORT int BORINGSSL_self_test(void);
+
+
+// Deprecated functions.
+
+// OPENSSL_VERSION_TEXT contains a string the identifies the version of
+// “OpenSSL”. node.js requires a version number in this text.
+#define OPENSSL_VERSION_TEXT "OpenSSL 1.1.0 (compatible; BoringSSL)"
+
+#define OPENSSL_VERSION 0
+#define OPENSSL_CFLAGS 1
+#define OPENSSL_BUILT_ON 2
+#define OPENSSL_PLATFORM 3
+#define OPENSSL_DIR 4
+
+// OpenSSL_version is a compatibility function that returns the string
+// "BoringSSL" if |which| is |OPENSSL_VERSION| and placeholder strings
+// otherwise.
+OPENSSL_EXPORT const char *OpenSSL_version(int which);
+
+#define SSLEAY_VERSION OPENSSL_VERSION
+#define SSLEAY_CFLAGS OPENSSL_CFLAGS
+#define SSLEAY_BUILT_ON OPENSSL_BUILT_ON
+#define SSLEAY_PLATFORM OPENSSL_PLATFORM
+#define SSLEAY_DIR OPENSSL_DIR
+
+// SSLeay_version calls |OpenSSL_version|.
+OPENSSL_EXPORT const char *SSLeay_version(int which);
+
+// SSLeay is a compatibility function that returns OPENSSL_VERSION_NUMBER from
+// base.h.
+OPENSSL_EXPORT unsigned long SSLeay(void);
+
+// OpenSSL_version_num is a compatibility function that returns
+// OPENSSL_VERSION_NUMBER from base.h.
+OPENSSL_EXPORT unsigned long OpenSSL_version_num(void);
+
+// CRYPTO_malloc_init returns one.
+OPENSSL_EXPORT int CRYPTO_malloc_init(void);
+
+// OPENSSL_malloc_init returns one.
+OPENSSL_EXPORT int OPENSSL_malloc_init(void);
+
+// ENGINE_load_builtin_engines does nothing.
+OPENSSL_EXPORT void ENGINE_load_builtin_engines(void);
+
+// ENGINE_register_all_complete returns one.
+OPENSSL_EXPORT int ENGINE_register_all_complete(void);
+
+// OPENSSL_load_builtin_modules does nothing.
+OPENSSL_EXPORT void OPENSSL_load_builtin_modules(void);
+
+#define OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_LOAD_CRYPTO_STRINGS 0
+#define OPENSSL_INIT_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_NO_ADD_ALL_CIPHERS 0
+#define OPENSSL_INIT_NO_ADD_ALL_DIGESTS 0
+#define OPENSSL_INIT_LOAD_CONFIG 0
+#define OPENSSL_INIT_NO_LOAD_CONFIG 0
+
+// OPENSSL_init_crypto calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_crypto(uint64_t opts,
+                                       const OPENSSL_INIT_SETTINGS *settings);
+
+// OPENSSL_cleanup does nothing.
+OPENSSL_EXPORT void OPENSSL_cleanup(void);
+
+// FIPS_mode_set returns one if |on| matches whether BoringSSL was built with
+// |BORINGSSL_FIPS| and zero otherwise.
+OPENSSL_EXPORT int FIPS_mode_set(int on);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h
new file mode 100644
index 0000000..45d8ace
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h	
@@ -0,0 +1,201 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CURVE25519_H
+#define OPENSSL_HEADER_CURVE25519_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Curve25519.
+//
+// Curve25519 is an elliptic curve. See https://tools.ietf.org/html/rfc7748.
+
+
+// X25519.
+//
+// X25519 is the Diffie-Hellman primitive built from curve25519. It is
+// sometimes referred to as “curve25519”, but “X25519” is a more precise name.
+// See http://cr.yp.to/ecdh.html and https://tools.ietf.org/html/rfc7748.
+
+#define X25519_PRIVATE_KEY_LEN 32
+#define X25519_PUBLIC_VALUE_LEN 32
+#define X25519_SHARED_KEY_LEN 32
+
+// X25519_keypair sets |out_public_value| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void X25519_keypair(uint8_t out_public_value[32],
+                                   uint8_t out_private_key[32]);
+
+// X25519 writes a shared key to |out_shared_key| that is calculated from the
+// given private key and the peer's public value. It returns one on success and
+// zero on error.
+//
+// Don't use the shared key directly, rather use a KDF and also include the two
+// public values as inputs.
+OPENSSL_EXPORT int X25519(uint8_t out_shared_key[32],
+                          const uint8_t private_key[32],
+                          const uint8_t peer_public_value[32]);
+
+// X25519_public_from_private calculates a Diffie-Hellman public value from the
+// given private key and writes it to |out_public_value|.
+OPENSSL_EXPORT void X25519_public_from_private(uint8_t out_public_value[32],
+                                               const uint8_t private_key[32]);
+
+
+// Ed25519.
+//
+// Ed25519 is a signature scheme using a twisted-Edwards curve that is
+// birationally equivalent to curve25519.
+//
+// Note that, unlike RFC 8032's formulation, our private key representation
+// includes a public key suffix to make multiple key signing operations with the
+// same key more efficient. The RFC 8032 private key is referred to in this
+// implementation as the "seed" and is the first 32 bytes of our private key.
+
+#define ED25519_PRIVATE_KEY_LEN 64
+#define ED25519_PUBLIC_KEY_LEN 32
+#define ED25519_SIGNATURE_LEN 64
+
+// ED25519_keypair sets |out_public_key| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void ED25519_keypair(uint8_t out_public_key[32],
+                                    uint8_t out_private_key[64]);
+
+// ED25519_sign sets |out_sig| to be a signature of |message_len| bytes from
+// |message| using |private_key|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int ED25519_sign(uint8_t out_sig[64], const uint8_t *message,
+                                size_t message_len,
+                                const uint8_t private_key[64]);
+
+// ED25519_verify returns one iff |signature| is a valid signature, by
+// |public_key| of |message_len| bytes from |message|. It returns zero
+// otherwise.
+OPENSSL_EXPORT int ED25519_verify(const uint8_t *message, size_t message_len,
+                                  const uint8_t signature[64],
+                                  const uint8_t public_key[32]);
+
+// ED25519_keypair_from_seed calculates a public and private key from an
+// Ed25519 “seed”. Seed values are not exposed by this API (although they
+// happen to be the first 32 bytes of a private key) so this function is for
+// interoperating with systems that may store just a seed instead of a full
+// private key.
+OPENSSL_EXPORT void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+                                              uint8_t out_private_key[64],
+                                              const uint8_t seed[32]);
+
+
+// SPAKE2.
+//
+// SPAKE2 is a password-authenticated key-exchange. It allows two parties,
+// who share a low-entropy secret (i.e. password), to agree on a shared key.
+// An attacker can only make one guess of the password per execution of the
+// protocol.
+//
+// See https://tools.ietf.org/html/draft-irtf-cfrg-spake2-02.
+
+// spake2_role_t enumerates the different “roles” in SPAKE2. The protocol
+// requires that the symmetry of the two parties be broken so one participant
+// must be “Alice” and the other be “Bob”.
+enum spake2_role_t {
+  spake2_role_alice,
+  spake2_role_bob,
+};
+
+// SPAKE2_CTX_new creates a new |SPAKE2_CTX| (which can only be used for a
+// single execution of the protocol). SPAKE2 requires the symmetry of the two
+// parties to be broken which is indicated via |my_role| – each party must pass
+// a different value for this argument.
+//
+// The |my_name| and |their_name| arguments allow optional, opaque names to be
+// bound into the protocol. For example MAC addresses, hostnames, usernames
+// etc. These values are not exposed and can avoid context-confusion attacks
+// when a password is shared between several devices.
+OPENSSL_EXPORT SPAKE2_CTX *SPAKE2_CTX_new(
+    enum spake2_role_t my_role,
+    const uint8_t *my_name, size_t my_name_len,
+    const uint8_t *their_name, size_t their_name_len);
+
+// SPAKE2_CTX_free frees |ctx| and all the resources that it has allocated.
+OPENSSL_EXPORT void SPAKE2_CTX_free(SPAKE2_CTX *ctx);
+
+// SPAKE2_MAX_MSG_SIZE is the maximum size of a SPAKE2 message.
+#define SPAKE2_MAX_MSG_SIZE 32
+
+// SPAKE2_generate_msg generates a SPAKE2 message given |password|, writes
+// it to |out| and sets |*out_len| to the number of bytes written.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be at least |SPAKE2_MAX_MSG_SIZE| bytes.
+//
+// This function can only be called once for a given |SPAKE2_CTX|.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int SPAKE2_generate_msg(SPAKE2_CTX *ctx, uint8_t *out,
+                                       size_t *out_len, size_t max_out_len,
+                                       const uint8_t *password,
+                                       size_t password_len);
+
+// SPAKE2_MAX_KEY_SIZE is the maximum amount of key material that SPAKE2 will
+// produce.
+#define SPAKE2_MAX_KEY_SIZE 64
+
+// SPAKE2_process_msg completes the SPAKE2 exchange given the peer's message in
+// |their_msg|, writes at most |max_out_key_len| bytes to |out_key| and sets
+// |*out_key_len| to the number of bytes written.
+//
+// The resulting keying material is suitable for:
+//   a) Using directly in a key-confirmation step: i.e. each side could
+//      transmit a hash of their role, a channel-binding value and the key
+//      material to prove to the other side that they know the shared key.
+//   b) Using as input keying material to HKDF to generate a variety of subkeys
+//      for encryption etc.
+//
+// If |max_out_key_key| is smaller than the amount of key material generated
+// then the key is silently truncated. If you want to ensure that no truncation
+// occurs then |max_out_key| should be at least |SPAKE2_MAX_KEY_SIZE|.
+//
+// You must call |SPAKE2_generate_msg| on a given |SPAKE2_CTX| before calling
+// this function. On successful return, |ctx| is complete and calling
+// |SPAKE2_CTX_free| is the only acceptable operation on it.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int SPAKE2_process_msg(SPAKE2_CTX *ctx, uint8_t *out_key,
+                                      size_t *out_key_len,
+                                      size_t max_out_key_len,
+                                      const uint8_t *their_msg,
+                                      size_t their_msg_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SPAKE2_CTX, SPAKE2_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CURVE25519_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.back
new file mode 100644
index 0000000..a455389
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.back	
@@ -0,0 +1,201 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CURVE25519_H
+#define OPENSSL_HEADER_CURVE25519_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Curve25519.
+//
+// Curve25519 is an elliptic curve. See https://tools.ietf.org/html/rfc7748.
+
+
+// X25519.
+//
+// X25519 is the Diffie-Hellman primitive built from curve25519. It is
+// sometimes referred to as “curve25519”, but “X25519” is a more precise name.
+// See http://cr.yp.to/ecdh.html and https://tools.ietf.org/html/rfc7748.
+
+#define X25519_PRIVATE_KEY_LEN 32
+#define X25519_PUBLIC_VALUE_LEN 32
+#define X25519_SHARED_KEY_LEN 32
+
+// X25519_keypair sets |out_public_value| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void X25519_keypair(uint8_t out_public_value[32],
+                                   uint8_t out_private_key[32]);
+
+// X25519 writes a shared key to |out_shared_key| that is calculated from the
+// given private key and the peer's public value. It returns one on success and
+// zero on error.
+//
+// Don't use the shared key directly, rather use a KDF and also include the two
+// public values as inputs.
+OPENSSL_EXPORT int X25519(uint8_t out_shared_key[32],
+                          const uint8_t private_key[32],
+                          const uint8_t peer_public_value[32]);
+
+// X25519_public_from_private calculates a Diffie-Hellman public value from the
+// given private key and writes it to |out_public_value|.
+OPENSSL_EXPORT void X25519_public_from_private(uint8_t out_public_value[32],
+                                               const uint8_t private_key[32]);
+
+
+// Ed25519.
+//
+// Ed25519 is a signature scheme using a twisted-Edwards curve that is
+// birationally equivalent to curve25519.
+//
+// Note that, unlike RFC 8032's formulation, our private key representation
+// includes a public key suffix to make multiple key signing operations with the
+// same key more efficient. The RFC 8032 private key is referred to in this
+// implementation as the "seed" and is the first 32 bytes of our private key.
+
+#define ED25519_PRIVATE_KEY_LEN 64
+#define ED25519_PUBLIC_KEY_LEN 32
+#define ED25519_SIGNATURE_LEN 64
+
+// ED25519_keypair sets |out_public_key| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void ED25519_keypair(uint8_t out_public_key[32],
+                                    uint8_t out_private_key[64]);
+
+// ED25519_sign sets |out_sig| to be a signature of |message_len| bytes from
+// |message| using |private_key|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int ED25519_sign(uint8_t out_sig[64], const uint8_t *message,
+                                size_t message_len,
+                                const uint8_t private_key[64]);
+
+// ED25519_verify returns one iff |signature| is a valid signature, by
+// |public_key| of |message_len| bytes from |message|. It returns zero
+// otherwise.
+OPENSSL_EXPORT int ED25519_verify(const uint8_t *message, size_t message_len,
+                                  const uint8_t signature[64],
+                                  const uint8_t public_key[32]);
+
+// ED25519_keypair_from_seed calculates a public and private key from an
+// Ed25519 “seed”. Seed values are not exposed by this API (although they
+// happen to be the first 32 bytes of a private key) so this function is for
+// interoperating with systems that may store just a seed instead of a full
+// private key.
+OPENSSL_EXPORT void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+                                              uint8_t out_private_key[64],
+                                              const uint8_t seed[32]);
+
+
+// SPAKE2.
+//
+// SPAKE2 is a password-authenticated key-exchange. It allows two parties,
+// who share a low-entropy secret (i.e. password), to agree on a shared key.
+// An attacker can only make one guess of the password per execution of the
+// protocol.
+//
+// See https://tools.ietf.org/html/draft-irtf-cfrg-spake2-02.
+
+// spake2_role_t enumerates the different “roles” in SPAKE2. The protocol
+// requires that the symmetry of the two parties be broken so one participant
+// must be “Alice” and the other be “Bob”.
+enum spake2_role_t {
+  spake2_role_alice,
+  spake2_role_bob,
+};
+
+// SPAKE2_CTX_new creates a new |SPAKE2_CTX| (which can only be used for a
+// single execution of the protocol). SPAKE2 requires the symmetry of the two
+// parties to be broken which is indicated via |my_role| – each party must pass
+// a different value for this argument.
+//
+// The |my_name| and |their_name| arguments allow optional, opaque names to be
+// bound into the protocol. For example MAC addresses, hostnames, usernames
+// etc. These values are not exposed and can avoid context-confusion attacks
+// when a password is shared between several devices.
+OPENSSL_EXPORT SPAKE2_CTX *SPAKE2_CTX_new(
+    enum spake2_role_t my_role,
+    const uint8_t *my_name, size_t my_name_len,
+    const uint8_t *their_name, size_t their_name_len);
+
+// SPAKE2_CTX_free frees |ctx| and all the resources that it has allocated.
+OPENSSL_EXPORT void SPAKE2_CTX_free(SPAKE2_CTX *ctx);
+
+// SPAKE2_MAX_MSG_SIZE is the maximum size of a SPAKE2 message.
+#define SPAKE2_MAX_MSG_SIZE 32
+
+// SPAKE2_generate_msg generates a SPAKE2 message given |password|, writes
+// it to |out| and sets |*out_len| to the number of bytes written.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be at least |SPAKE2_MAX_MSG_SIZE| bytes.
+//
+// This function can only be called once for a given |SPAKE2_CTX|.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int SPAKE2_generate_msg(SPAKE2_CTX *ctx, uint8_t *out,
+                                       size_t *out_len, size_t max_out_len,
+                                       const uint8_t *password,
+                                       size_t password_len);
+
+// SPAKE2_MAX_KEY_SIZE is the maximum amount of key material that SPAKE2 will
+// produce.
+#define SPAKE2_MAX_KEY_SIZE 64
+
+// SPAKE2_process_msg completes the SPAKE2 exchange given the peer's message in
+// |their_msg|, writes at most |max_out_key_len| bytes to |out_key| and sets
+// |*out_key_len| to the number of bytes written.
+//
+// The resulting keying material is suitable for:
+//   a) Using directly in a key-confirmation step: i.e. each side could
+//      transmit a hash of their role, a channel-binding value and the key
+//      material to prove to the other side that they know the shared key.
+//   b) Using as input keying material to HKDF to generate a variety of subkeys
+//      for encryption etc.
+//
+// If |max_out_key_key| is smaller than the amount of key material generated
+// then the key is silently truncated. If you want to ensure that no truncation
+// occurs then |max_out_key| should be at least |SPAKE2_MAX_KEY_SIZE|.
+//
+// You must call |SPAKE2_generate_msg| on a given |SPAKE2_CTX| before calling
+// this function. On successful return, |ctx| is complete and calling
+// |SPAKE2_CTX_free| is the only acceptable operation on it.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int SPAKE2_process_msg(SPAKE2_CTX *ctx, uint8_t *out_key,
+                                      size_t *out_key_len,
+                                      size_t max_out_key_len,
+                                      const uint8_t *their_msg,
+                                      size_t their_msg_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SPAKE2_CTX, SPAKE2_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CURVE25519_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.grpc_back
new file mode 100644
index 0000000..a455389
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/curve25519.h.grpc_back	
@@ -0,0 +1,201 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CURVE25519_H
+#define OPENSSL_HEADER_CURVE25519_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Curve25519.
+//
+// Curve25519 is an elliptic curve. See https://tools.ietf.org/html/rfc7748.
+
+
+// X25519.
+//
+// X25519 is the Diffie-Hellman primitive built from curve25519. It is
+// sometimes referred to as “curve25519”, but “X25519” is a more precise name.
+// See http://cr.yp.to/ecdh.html and https://tools.ietf.org/html/rfc7748.
+
+#define X25519_PRIVATE_KEY_LEN 32
+#define X25519_PUBLIC_VALUE_LEN 32
+#define X25519_SHARED_KEY_LEN 32
+
+// X25519_keypair sets |out_public_value| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void X25519_keypair(uint8_t out_public_value[32],
+                                   uint8_t out_private_key[32]);
+
+// X25519 writes a shared key to |out_shared_key| that is calculated from the
+// given private key and the peer's public value. It returns one on success and
+// zero on error.
+//
+// Don't use the shared key directly, rather use a KDF and also include the two
+// public values as inputs.
+OPENSSL_EXPORT int X25519(uint8_t out_shared_key[32],
+                          const uint8_t private_key[32],
+                          const uint8_t peer_public_value[32]);
+
+// X25519_public_from_private calculates a Diffie-Hellman public value from the
+// given private key and writes it to |out_public_value|.
+OPENSSL_EXPORT void X25519_public_from_private(uint8_t out_public_value[32],
+                                               const uint8_t private_key[32]);
+
+
+// Ed25519.
+//
+// Ed25519 is a signature scheme using a twisted-Edwards curve that is
+// birationally equivalent to curve25519.
+//
+// Note that, unlike RFC 8032's formulation, our private key representation
+// includes a public key suffix to make multiple key signing operations with the
+// same key more efficient. The RFC 8032 private key is referred to in this
+// implementation as the "seed" and is the first 32 bytes of our private key.
+
+#define ED25519_PRIVATE_KEY_LEN 64
+#define ED25519_PUBLIC_KEY_LEN 32
+#define ED25519_SIGNATURE_LEN 64
+
+// ED25519_keypair sets |out_public_key| and |out_private_key| to a freshly
+// generated, public–private key pair.
+OPENSSL_EXPORT void ED25519_keypair(uint8_t out_public_key[32],
+                                    uint8_t out_private_key[64]);
+
+// ED25519_sign sets |out_sig| to be a signature of |message_len| bytes from
+// |message| using |private_key|. It returns one on success or zero on
+// allocation failure.
+OPENSSL_EXPORT int ED25519_sign(uint8_t out_sig[64], const uint8_t *message,
+                                size_t message_len,
+                                const uint8_t private_key[64]);
+
+// ED25519_verify returns one iff |signature| is a valid signature, by
+// |public_key| of |message_len| bytes from |message|. It returns zero
+// otherwise.
+OPENSSL_EXPORT int ED25519_verify(const uint8_t *message, size_t message_len,
+                                  const uint8_t signature[64],
+                                  const uint8_t public_key[32]);
+
+// ED25519_keypair_from_seed calculates a public and private key from an
+// Ed25519 “seed”. Seed values are not exposed by this API (although they
+// happen to be the first 32 bytes of a private key) so this function is for
+// interoperating with systems that may store just a seed instead of a full
+// private key.
+OPENSSL_EXPORT void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+                                              uint8_t out_private_key[64],
+                                              const uint8_t seed[32]);
+
+
+// SPAKE2.
+//
+// SPAKE2 is a password-authenticated key-exchange. It allows two parties,
+// who share a low-entropy secret (i.e. password), to agree on a shared key.
+// An attacker can only make one guess of the password per execution of the
+// protocol.
+//
+// See https://tools.ietf.org/html/draft-irtf-cfrg-spake2-02.
+
+// spake2_role_t enumerates the different “roles” in SPAKE2. The protocol
+// requires that the symmetry of the two parties be broken so one participant
+// must be “Alice” and the other be “Bob”.
+enum spake2_role_t {
+  spake2_role_alice,
+  spake2_role_bob,
+};
+
+// SPAKE2_CTX_new creates a new |SPAKE2_CTX| (which can only be used for a
+// single execution of the protocol). SPAKE2 requires the symmetry of the two
+// parties to be broken which is indicated via |my_role| – each party must pass
+// a different value for this argument.
+//
+// The |my_name| and |their_name| arguments allow optional, opaque names to be
+// bound into the protocol. For example MAC addresses, hostnames, usernames
+// etc. These values are not exposed and can avoid context-confusion attacks
+// when a password is shared between several devices.
+OPENSSL_EXPORT SPAKE2_CTX *SPAKE2_CTX_new(
+    enum spake2_role_t my_role,
+    const uint8_t *my_name, size_t my_name_len,
+    const uint8_t *their_name, size_t their_name_len);
+
+// SPAKE2_CTX_free frees |ctx| and all the resources that it has allocated.
+OPENSSL_EXPORT void SPAKE2_CTX_free(SPAKE2_CTX *ctx);
+
+// SPAKE2_MAX_MSG_SIZE is the maximum size of a SPAKE2 message.
+#define SPAKE2_MAX_MSG_SIZE 32
+
+// SPAKE2_generate_msg generates a SPAKE2 message given |password|, writes
+// it to |out| and sets |*out_len| to the number of bytes written.
+//
+// At most |max_out_len| bytes are written to |out| and, in order to ensure
+// success, |max_out_len| should be at least |SPAKE2_MAX_MSG_SIZE| bytes.
+//
+// This function can only be called once for a given |SPAKE2_CTX|.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int SPAKE2_generate_msg(SPAKE2_CTX *ctx, uint8_t *out,
+                                       size_t *out_len, size_t max_out_len,
+                                       const uint8_t *password,
+                                       size_t password_len);
+
+// SPAKE2_MAX_KEY_SIZE is the maximum amount of key material that SPAKE2 will
+// produce.
+#define SPAKE2_MAX_KEY_SIZE 64
+
+// SPAKE2_process_msg completes the SPAKE2 exchange given the peer's message in
+// |their_msg|, writes at most |max_out_key_len| bytes to |out_key| and sets
+// |*out_key_len| to the number of bytes written.
+//
+// The resulting keying material is suitable for:
+//   a) Using directly in a key-confirmation step: i.e. each side could
+//      transmit a hash of their role, a channel-binding value and the key
+//      material to prove to the other side that they know the shared key.
+//   b) Using as input keying material to HKDF to generate a variety of subkeys
+//      for encryption etc.
+//
+// If |max_out_key_key| is smaller than the amount of key material generated
+// then the key is silently truncated. If you want to ensure that no truncation
+// occurs then |max_out_key| should be at least |SPAKE2_MAX_KEY_SIZE|.
+//
+// You must call |SPAKE2_generate_msg| on a given |SPAKE2_CTX| before calling
+// this function. On successful return, |ctx| is complete and calling
+// |SPAKE2_CTX_free| is the only acceptable operation on it.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int SPAKE2_process_msg(SPAKE2_CTX *ctx, uint8_t *out_key,
+                                      size_t *out_key_len,
+                                      size_t max_out_key_len,
+                                      const uint8_t *their_msg,
+                                      size_t their_msg_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SPAKE2_CTX, SPAKE2_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_CURVE25519_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h
new file mode 100644
index 0000000..a817755
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h	
@@ -0,0 +1,177 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_H
+#define OPENSSL_HEADER_DES_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DES.
+
+
+typedef struct DES_cblock_st {
+  uint8_t bytes[8];
+} DES_cblock;
+
+typedef struct DES_ks {
+  uint32_t subkeys[16][2];
+} DES_key_schedule;
+
+
+#define DES_KEY_SZ (sizeof(DES_cblock))
+#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
+
+#define DES_ENCRYPT 1
+#define DES_DECRYPT 0
+
+#define DES_CBC_MODE 0
+#define DES_PCBC_MODE 1
+
+// DES_set_key performs a key schedule and initialises |schedule| with |key|.
+OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
+                                DES_key_schedule *schedule);
+
+// DES_set_odd_parity sets the parity bits (the least-significant bits in each
+// byte) of |key| given the other bits in each byte.
+OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
+
+// DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
+// single DES block (8 bytes) from in to out, using the key configured in
+// |schedule|.
+OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
+                                    const DES_key_schedule *schedule,
+                                    int is_encrypt);
+
+// DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with DES in CBC mode.
+OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t len,
+                                     const DES_key_schedule *schedule,
+                                     DES_cblock *ivec, int enc);
+
+// DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
+// block (8 bytes) of data from |input| to |output| using 3DES.
+OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
+                                     DES_cblock *output,
+                                     const DES_key_schedule *ks1,
+                                     const DES_key_schedule *ks2,
+                                     const DES_key_schedule *ks3,
+                                     int enc);
+
+// DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
+// the function takes three different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         const DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+// DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
+// first and third 3DES keys are identical. Thus, this function takes only two
+// different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         DES_cblock *ivec, int enc);
+
+
+// Deprecated functions.
+
+// DES_set_key_unchecked calls |DES_set_key|.
+OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
+                                          DES_key_schedule *schedule);
+
+OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                           long length, DES_key_schedule *ks1,
+                                           DES_key_schedule *ks2,
+                                           DES_key_schedule *ks3,
+                                           DES_cblock *ivec, int *num, int enc);
+
+OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
+                                         int numbits, long length,
+                                         DES_key_schedule *ks1,
+                                         DES_key_schedule *ks2,
+                                         DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+
+// Private functions.
+//
+// These functions are only exported for use in |decrepit|.
+
+OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.back
new file mode 100644
index 0000000..af1c822
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.back	
@@ -0,0 +1,177 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_H
+#define OPENSSL_HEADER_DES_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DES.
+
+
+typedef struct DES_cblock_st {
+  uint8_t bytes[8];
+} DES_cblock;
+
+typedef struct DES_ks {
+  uint32_t subkeys[16][2];
+} DES_key_schedule;
+
+
+#define DES_KEY_SZ (sizeof(DES_cblock))
+#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
+
+#define DES_ENCRYPT 1
+#define DES_DECRYPT 0
+
+#define DES_CBC_MODE 0
+#define DES_PCBC_MODE 1
+
+// DES_set_key performs a key schedule and initialises |schedule| with |key|.
+OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
+                                DES_key_schedule *schedule);
+
+// DES_set_odd_parity sets the parity bits (the least-significant bits in each
+// byte) of |key| given the other bits in each byte.
+OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
+
+// DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
+// single DES block (8 bytes) from in to out, using the key configured in
+// |schedule|.
+OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
+                                    const DES_key_schedule *schedule,
+                                    int is_encrypt);
+
+// DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with DES in CBC mode.
+OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t len,
+                                     const DES_key_schedule *schedule,
+                                     DES_cblock *ivec, int enc);
+
+// DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
+// block (8 bytes) of data from |input| to |output| using 3DES.
+OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
+                                     DES_cblock *output,
+                                     const DES_key_schedule *ks1,
+                                     const DES_key_schedule *ks2,
+                                     const DES_key_schedule *ks3,
+                                     int enc);
+
+// DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
+// the function takes three different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         const DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+// DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
+// first and third 3DES keys are identical. Thus, this function takes only two
+// different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         DES_cblock *ivec, int enc);
+
+
+// Deprecated functions.
+
+// DES_set_key_unchecked calls |DES_set_key|.
+OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
+                                          DES_key_schedule *schedule);
+
+OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                           long length, DES_key_schedule *ks1,
+                                           DES_key_schedule *ks2,
+                                           DES_key_schedule *ks3,
+                                           DES_cblock *ivec, int *num, int enc);
+
+OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
+                                         int numbits, long length,
+                                         DES_key_schedule *ks1,
+                                         DES_key_schedule *ks2,
+                                         DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+
+// Private functions.
+//
+// These functions are only exported for use in |decrepit|.
+
+OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.grpc_back
new file mode 100644
index 0000000..af1c822
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/des.h.grpc_back	
@@ -0,0 +1,177 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_H
+#define OPENSSL_HEADER_DES_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DES.
+
+
+typedef struct DES_cblock_st {
+  uint8_t bytes[8];
+} DES_cblock;
+
+typedef struct DES_ks {
+  uint32_t subkeys[16][2];
+} DES_key_schedule;
+
+
+#define DES_KEY_SZ (sizeof(DES_cblock))
+#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
+
+#define DES_ENCRYPT 1
+#define DES_DECRYPT 0
+
+#define DES_CBC_MODE 0
+#define DES_PCBC_MODE 1
+
+// DES_set_key performs a key schedule and initialises |schedule| with |key|.
+OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
+                                DES_key_schedule *schedule);
+
+// DES_set_odd_parity sets the parity bits (the least-significant bits in each
+// byte) of |key| given the other bits in each byte.
+OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
+
+// DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
+// single DES block (8 bytes) from in to out, using the key configured in
+// |schedule|.
+OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
+                                    const DES_key_schedule *schedule,
+                                    int is_encrypt);
+
+// DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with DES in CBC mode.
+OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
+                                     size_t len,
+                                     const DES_key_schedule *schedule,
+                                     DES_cblock *ivec, int enc);
+
+// DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
+// block (8 bytes) of data from |input| to |output| using 3DES.
+OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
+                                     DES_cblock *output,
+                                     const DES_key_schedule *ks1,
+                                     const DES_key_schedule *ks2,
+                                     const DES_key_schedule *ks3,
+                                     int enc);
+
+// DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
+// the function takes three different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         const DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+// DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
+// first and third 3DES keys are identical. Thus, this function takes only two
+// different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
+                                         size_t len,
+                                         const DES_key_schedule *ks1,
+                                         const DES_key_schedule *ks2,
+                                         DES_cblock *ivec, int enc);
+
+
+// Deprecated functions.
+
+// DES_set_key_unchecked calls |DES_set_key|.
+OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
+                                          DES_key_schedule *schedule);
+
+OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+                                           long length, DES_key_schedule *ks1,
+                                           DES_key_schedule *ks2,
+                                           DES_key_schedule *ks3,
+                                           DES_cblock *ivec, int *num, int enc);
+
+OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
+                                         int numbits, long length,
+                                         DES_key_schedule *ks1,
+                                         DES_key_schedule *ks2,
+                                         DES_key_schedule *ks3,
+                                         DES_cblock *ivec, int enc);
+
+
+// Private functions.
+//
+// These functions are only exported for use in |decrepit|.
+
+OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+                                 const DES_key_schedule *ks2,
+                                 const DES_key_schedule *ks3);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_DES_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h
new file mode 100644
index 0000000..4c59828
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h	
@@ -0,0 +1,299 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DH_H
+#define OPENSSL_HEADER_DH_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DH contains functions for performing Diffie-Hellman key agreement in
+// multiplicative groups.
+
+
+// Allocation and destruction.
+
+// DH_new returns a new, empty DH object or NULL on error.
+OPENSSL_EXPORT DH *DH_new(void);
+
+// DH_free decrements the reference count of |dh| and frees it if the reference
+// count drops to zero.
+OPENSSL_EXPORT void DH_free(DH *dh);
+
+// DH_up_ref increments the reference count of |dh| and returns one.
+OPENSSL_EXPORT int DH_up_ref(DH *dh);
+
+
+// Properties.
+
+// DH_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dh|'s
+// public and private key, respectively. If |dh| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DH_get0_key(const DH *dh, const BIGNUM **out_pub_key,
+                                const BIGNUM **out_priv_key);
+
+// DH_set0_key sets |dh|'s public and private key to the specified values. If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero.
+OPENSSL_EXPORT int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DH_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dh|'s p,
+// q, and g parameters, respectively.
+OPENSSL_EXPORT void DH_get0_pqg(const DH *dh, const BIGNUM **out_p,
+                                const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DH_set0_pqg sets |dh|'s p, q, and g parameters to the specified values.  If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero. |q| may be NULL, but
+// |p| and |g| must either be specified or already configured on |dh|.
+OPENSSL_EXPORT int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Standard parameters.
+
+// BN_get_rfc3526_prime_1536 sets |*ret| to the 1536-bit MODP group from RFC
+// 3526 and returns |ret|. If |ret| is NULL then a fresh |BIGNUM| is allocated
+// and returned. It returns NULL on allocation failure.
+OPENSSL_EXPORT BIGNUM *BN_get_rfc3526_prime_1536(BIGNUM *ret);
+
+
+// Parameter generation.
+
+#define DH_GENERATOR_2 2
+#define DH_GENERATOR_5 5
+
+// DH_generate_parameters_ex generates a suitable Diffie-Hellman group with a
+// prime that is |prime_bits| long and stores it in |dh|. The generator of the
+// group will be |generator|, which should be |DH_GENERATOR_2| unless there's a
+// good reason to use a different value. The |cb| argument contains a callback
+// function that will be called during the generation. See the documentation in
+// |bn.h| about this. In addition to the callback invocations from |BN|, |cb|
+// will also be called with |event| equal to three when the generation is
+// complete.
+OPENSSL_EXPORT int DH_generate_parameters_ex(DH *dh, int prime_bits,
+                                             int generator, BN_GENCB *cb);
+
+
+// Diffie-Hellman operations.
+
+// DH_generate_key generates a new, random, private key and stores it in
+// |dh|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DH_generate_key(DH *dh);
+
+// DH_compute_key calculates the shared key between |dh| and |peers_key| and
+// writes it as a big-endian integer into |out|, which must have |DH_size|
+// bytes of space. It returns the number of bytes written, or a negative number
+// on error.
+OPENSSL_EXPORT int DH_compute_key(uint8_t *out, const BIGNUM *peers_key,
+                                  DH *dh);
+
+
+// Utility functions.
+
+// DH_size returns the number of bytes in the DH group's prime.
+OPENSSL_EXPORT int DH_size(const DH *dh);
+
+// DH_num_bits returns the minimum number of bits needed to represent the
+// absolute value of the DH group's prime.
+OPENSSL_EXPORT unsigned DH_num_bits(const DH *dh);
+
+#define DH_CHECK_P_NOT_PRIME 0x01
+#define DH_CHECK_P_NOT_SAFE_PRIME 0x02
+#define DH_CHECK_UNABLE_TO_CHECK_GENERATOR 0x04
+#define DH_CHECK_NOT_SUITABLE_GENERATOR 0x08
+#define DH_CHECK_Q_NOT_PRIME 0x10
+#define DH_CHECK_INVALID_Q_VALUE 0x20
+#define DH_CHECK_INVALID_J_VALUE 0x40
+
+// These are compatibility defines.
+#define DH_NOT_SUITABLE_GENERATOR DH_CHECK_NOT_SUITABLE_GENERATOR
+#define DH_UNABLE_TO_CHECK_GENERATOR DH_CHECK_UNABLE_TO_CHECK_GENERATOR
+
+// DH_check checks the suitability of |dh| as a Diffie-Hellman group. and sets
+// |DH_CHECK_*| flags in |*out_flags| if it finds any errors. It returns one if
+// |*out_flags| was successfully set and zero on error.
+//
+// Note: these checks may be quite computationally expensive.
+OPENSSL_EXPORT int DH_check(const DH *dh, int *out_flags);
+
+#define DH_CHECK_PUBKEY_TOO_SMALL 0x1
+#define DH_CHECK_PUBKEY_TOO_LARGE 0x2
+#define DH_CHECK_PUBKEY_INVALID 0x4
+
+// DH_check_pub_key checks the suitability of |pub_key| as a public key for the
+// DH group in |dh| and sets |DH_CHECK_PUBKEY_*| flags in |*out_flags| if it
+// finds any errors. It returns one if |*out_flags| was successfully set and
+// zero on error.
+OPENSSL_EXPORT int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key,
+                                    int *out_flags);
+
+// DHparams_dup allocates a fresh |DH| and copies the parameters from |dh| into
+// it. It returns the new |DH| or NULL on error.
+OPENSSL_EXPORT DH *DHparams_dup(const DH *dh);
+
+
+// ASN.1 functions.
+
+// DH_parse_parameters decodes a DER-encoded DHParameter structure (PKCS #3)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DH| or NULL on
+// error.
+OPENSSL_EXPORT DH *DH_parse_parameters(CBS *cbs);
+
+// DH_marshal_parameters marshals |dh| as a DER-encoded DHParameter structure
+// (PKCS #3) and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int DH_marshal_parameters(CBB *cbb, const DH *dh);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DH_get_ex_new_index(long argl, void *argp,
+                                       CRYPTO_EX_unused *unused,
+                                       CRYPTO_EX_dup *dup_unused,
+                                       CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DH_set_ex_data(DH *d, int idx, void *arg);
+OPENSSL_EXPORT void *DH_get_ex_data(DH *d, int idx);
+
+
+// Deprecated functions.
+
+// DH_generate_parameters behaves like |DH_generate_parameters_ex|, which is
+// what you should use instead. It returns NULL on error, or a newly-allocated
+// |DH| on success. This function is provided for compatibility only.
+OPENSSL_EXPORT DH *DH_generate_parameters(int prime_len, int generator,
+                                          void (*callback)(int, int, void *),
+                                          void *cb_arg);
+
+// d2i_DHparams parses an ASN.1, DER encoded Diffie-Hellman parameters structure
+// from |len| bytes at |*inp|. If |ret| is not NULL then, on exit, a pointer to
+// the result is in |*ret|. Note that, even if |*ret| is already non-NULL on
+// entry, it will not be written to. Rather, a fresh |DH| is allocated and the
+// previous one is freed.
+//
+// On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DH_parse_parameters| instead.
+OPENSSL_EXPORT DH *d2i_DHparams(DH **ret, const unsigned char **inp, long len);
+
+// i2d_DHparams marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |DH_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DHparams(const DH *in, unsigned char **outp);
+
+
+struct dh_st {
+  BIGNUM *p;
+  BIGNUM *g;
+  BIGNUM *pub_key;   // g^x mod p
+  BIGNUM *priv_key;  // x
+
+  // priv_length contains the length, in bits, of the private value. If zero,
+  // the private value will be the same length as |p|.
+  unsigned priv_length;
+
+  CRYPTO_MUTEX method_mont_p_lock;
+  BN_MONT_CTX *method_mont_p;
+
+  // Place holders if we want to do X9.42 DH
+  BIGNUM *q;
+  BIGNUM *j;
+  unsigned char *seed;
+  int seedlen;
+  BIGNUM *counter;
+
+  int flags;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DH, DH_free)
+BORINGSSL_MAKE_UP_REF(DH, DH_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DH_R_BAD_GENERATOR 100
+#define DH_R_INVALID_PUBKEY 101
+#define DH_R_MODULUS_TOO_LARGE 102
+#define DH_R_NO_PRIVATE_VALUE 103
+#define DH_R_DECODE_ERROR 104
+#define DH_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_DH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.back
new file mode 100644
index 0000000..7e10303
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.back	
@@ -0,0 +1,299 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DH_H
+#define OPENSSL_HEADER_DH_H
+
+#include <openssl/base.h>
+
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DH contains functions for performing Diffie-Hellman key agreement in
+// multiplicative groups.
+
+
+// Allocation and destruction.
+
+// DH_new returns a new, empty DH object or NULL on error.
+OPENSSL_EXPORT DH *DH_new(void);
+
+// DH_free decrements the reference count of |dh| and frees it if the reference
+// count drops to zero.
+OPENSSL_EXPORT void DH_free(DH *dh);
+
+// DH_up_ref increments the reference count of |dh| and returns one.
+OPENSSL_EXPORT int DH_up_ref(DH *dh);
+
+
+// Properties.
+
+// DH_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dh|'s
+// public and private key, respectively. If |dh| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DH_get0_key(const DH *dh, const BIGNUM **out_pub_key,
+                                const BIGNUM **out_priv_key);
+
+// DH_set0_key sets |dh|'s public and private key to the specified values. If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero.
+OPENSSL_EXPORT int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DH_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dh|'s p,
+// q, and g parameters, respectively.
+OPENSSL_EXPORT void DH_get0_pqg(const DH *dh, const BIGNUM **out_p,
+                                const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DH_set0_pqg sets |dh|'s p, q, and g parameters to the specified values.  If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero. |q| may be NULL, but
+// |p| and |g| must either be specified or already configured on |dh|.
+OPENSSL_EXPORT int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Standard parameters.
+
+// BN_get_rfc3526_prime_1536 sets |*ret| to the 1536-bit MODP group from RFC
+// 3526 and returns |ret|. If |ret| is NULL then a fresh |BIGNUM| is allocated
+// and returned. It returns NULL on allocation failure.
+OPENSSL_EXPORT BIGNUM *BN_get_rfc3526_prime_1536(BIGNUM *ret);
+
+
+// Parameter generation.
+
+#define DH_GENERATOR_2 2
+#define DH_GENERATOR_5 5
+
+// DH_generate_parameters_ex generates a suitable Diffie-Hellman group with a
+// prime that is |prime_bits| long and stores it in |dh|. The generator of the
+// group will be |generator|, which should be |DH_GENERATOR_2| unless there's a
+// good reason to use a different value. The |cb| argument contains a callback
+// function that will be called during the generation. See the documentation in
+// |bn.h| about this. In addition to the callback invocations from |BN|, |cb|
+// will also be called with |event| equal to three when the generation is
+// complete.
+OPENSSL_EXPORT int DH_generate_parameters_ex(DH *dh, int prime_bits,
+                                             int generator, BN_GENCB *cb);
+
+
+// Diffie-Hellman operations.
+
+// DH_generate_key generates a new, random, private key and stores it in
+// |dh|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DH_generate_key(DH *dh);
+
+// DH_compute_key calculates the shared key between |dh| and |peers_key| and
+// writes it as a big-endian integer into |out|, which must have |DH_size|
+// bytes of space. It returns the number of bytes written, or a negative number
+// on error.
+OPENSSL_EXPORT int DH_compute_key(uint8_t *out, const BIGNUM *peers_key,
+                                  DH *dh);
+
+
+// Utility functions.
+
+// DH_size returns the number of bytes in the DH group's prime.
+OPENSSL_EXPORT int DH_size(const DH *dh);
+
+// DH_num_bits returns the minimum number of bits needed to represent the
+// absolute value of the DH group's prime.
+OPENSSL_EXPORT unsigned DH_num_bits(const DH *dh);
+
+#define DH_CHECK_P_NOT_PRIME 0x01
+#define DH_CHECK_P_NOT_SAFE_PRIME 0x02
+#define DH_CHECK_UNABLE_TO_CHECK_GENERATOR 0x04
+#define DH_CHECK_NOT_SUITABLE_GENERATOR 0x08
+#define DH_CHECK_Q_NOT_PRIME 0x10
+#define DH_CHECK_INVALID_Q_VALUE 0x20
+#define DH_CHECK_INVALID_J_VALUE 0x40
+
+// These are compatibility defines.
+#define DH_NOT_SUITABLE_GENERATOR DH_CHECK_NOT_SUITABLE_GENERATOR
+#define DH_UNABLE_TO_CHECK_GENERATOR DH_CHECK_UNABLE_TO_CHECK_GENERATOR
+
+// DH_check checks the suitability of |dh| as a Diffie-Hellman group. and sets
+// |DH_CHECK_*| flags in |*out_flags| if it finds any errors. It returns one if
+// |*out_flags| was successfully set and zero on error.
+//
+// Note: these checks may be quite computationally expensive.
+OPENSSL_EXPORT int DH_check(const DH *dh, int *out_flags);
+
+#define DH_CHECK_PUBKEY_TOO_SMALL 0x1
+#define DH_CHECK_PUBKEY_TOO_LARGE 0x2
+#define DH_CHECK_PUBKEY_INVALID 0x4
+
+// DH_check_pub_key checks the suitability of |pub_key| as a public key for the
+// DH group in |dh| and sets |DH_CHECK_PUBKEY_*| flags in |*out_flags| if it
+// finds any errors. It returns one if |*out_flags| was successfully set and
+// zero on error.
+OPENSSL_EXPORT int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key,
+                                    int *out_flags);
+
+// DHparams_dup allocates a fresh |DH| and copies the parameters from |dh| into
+// it. It returns the new |DH| or NULL on error.
+OPENSSL_EXPORT DH *DHparams_dup(const DH *dh);
+
+
+// ASN.1 functions.
+
+// DH_parse_parameters decodes a DER-encoded DHParameter structure (PKCS #3)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DH| or NULL on
+// error.
+OPENSSL_EXPORT DH *DH_parse_parameters(CBS *cbs);
+
+// DH_marshal_parameters marshals |dh| as a DER-encoded DHParameter structure
+// (PKCS #3) and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int DH_marshal_parameters(CBB *cbb, const DH *dh);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DH_get_ex_new_index(long argl, void *argp,
+                                       CRYPTO_EX_unused *unused,
+                                       CRYPTO_EX_dup *dup_unused,
+                                       CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DH_set_ex_data(DH *d, int idx, void *arg);
+OPENSSL_EXPORT void *DH_get_ex_data(DH *d, int idx);
+
+
+// Deprecated functions.
+
+// DH_generate_parameters behaves like |DH_generate_parameters_ex|, which is
+// what you should use instead. It returns NULL on error, or a newly-allocated
+// |DH| on success. This function is provided for compatibility only.
+OPENSSL_EXPORT DH *DH_generate_parameters(int prime_len, int generator,
+                                          void (*callback)(int, int, void *),
+                                          void *cb_arg);
+
+// d2i_DHparams parses an ASN.1, DER encoded Diffie-Hellman parameters structure
+// from |len| bytes at |*inp|. If |ret| is not NULL then, on exit, a pointer to
+// the result is in |*ret|. Note that, even if |*ret| is already non-NULL on
+// entry, it will not be written to. Rather, a fresh |DH| is allocated and the
+// previous one is freed.
+//
+// On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DH_parse_parameters| instead.
+OPENSSL_EXPORT DH *d2i_DHparams(DH **ret, const unsigned char **inp, long len);
+
+// i2d_DHparams marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |DH_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DHparams(const DH *in, unsigned char **outp);
+
+
+struct dh_st {
+  BIGNUM *p;
+  BIGNUM *g;
+  BIGNUM *pub_key;   // g^x mod p
+  BIGNUM *priv_key;  // x
+
+  // priv_length contains the length, in bits, of the private value. If zero,
+  // the private value will be the same length as |p|.
+  unsigned priv_length;
+
+  CRYPTO_MUTEX method_mont_p_lock;
+  BN_MONT_CTX *method_mont_p;
+
+  // Place holders if we want to do X9.42 DH
+  BIGNUM *q;
+  BIGNUM *j;
+  unsigned char *seed;
+  int seedlen;
+  BIGNUM *counter;
+
+  int flags;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DH, DH_free)
+BORINGSSL_MAKE_UP_REF(DH, DH_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DH_R_BAD_GENERATOR 100
+#define DH_R_INVALID_PUBKEY 101
+#define DH_R_MODULUS_TOO_LARGE 102
+#define DH_R_NO_PRIVATE_VALUE 103
+#define DH_R_DECODE_ERROR 104
+#define DH_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_DH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.grpc_back
new file mode 100644
index 0000000..7e10303
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dh.h.grpc_back	
@@ -0,0 +1,299 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DH_H
+#define OPENSSL_HEADER_DH_H
+
+#include <openssl/base.h>
+
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DH contains functions for performing Diffie-Hellman key agreement in
+// multiplicative groups.
+
+
+// Allocation and destruction.
+
+// DH_new returns a new, empty DH object or NULL on error.
+OPENSSL_EXPORT DH *DH_new(void);
+
+// DH_free decrements the reference count of |dh| and frees it if the reference
+// count drops to zero.
+OPENSSL_EXPORT void DH_free(DH *dh);
+
+// DH_up_ref increments the reference count of |dh| and returns one.
+OPENSSL_EXPORT int DH_up_ref(DH *dh);
+
+
+// Properties.
+
+// DH_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dh|'s
+// public and private key, respectively. If |dh| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DH_get0_key(const DH *dh, const BIGNUM **out_pub_key,
+                                const BIGNUM **out_priv_key);
+
+// DH_set0_key sets |dh|'s public and private key to the specified values. If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero.
+OPENSSL_EXPORT int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DH_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dh|'s p,
+// q, and g parameters, respectively.
+OPENSSL_EXPORT void DH_get0_pqg(const DH *dh, const BIGNUM **out_p,
+                                const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DH_set0_pqg sets |dh|'s p, q, and g parameters to the specified values.  If
+// NULL, the field is left unchanged. On success, it takes ownership of each
+// argument and returns one. Otherwise, it returns zero. |q| may be NULL, but
+// |p| and |g| must either be specified or already configured on |dh|.
+OPENSSL_EXPORT int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Standard parameters.
+
+// BN_get_rfc3526_prime_1536 sets |*ret| to the 1536-bit MODP group from RFC
+// 3526 and returns |ret|. If |ret| is NULL then a fresh |BIGNUM| is allocated
+// and returned. It returns NULL on allocation failure.
+OPENSSL_EXPORT BIGNUM *BN_get_rfc3526_prime_1536(BIGNUM *ret);
+
+
+// Parameter generation.
+
+#define DH_GENERATOR_2 2
+#define DH_GENERATOR_5 5
+
+// DH_generate_parameters_ex generates a suitable Diffie-Hellman group with a
+// prime that is |prime_bits| long and stores it in |dh|. The generator of the
+// group will be |generator|, which should be |DH_GENERATOR_2| unless there's a
+// good reason to use a different value. The |cb| argument contains a callback
+// function that will be called during the generation. See the documentation in
+// |bn.h| about this. In addition to the callback invocations from |BN|, |cb|
+// will also be called with |event| equal to three when the generation is
+// complete.
+OPENSSL_EXPORT int DH_generate_parameters_ex(DH *dh, int prime_bits,
+                                             int generator, BN_GENCB *cb);
+
+
+// Diffie-Hellman operations.
+
+// DH_generate_key generates a new, random, private key and stores it in
+// |dh|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DH_generate_key(DH *dh);
+
+// DH_compute_key calculates the shared key between |dh| and |peers_key| and
+// writes it as a big-endian integer into |out|, which must have |DH_size|
+// bytes of space. It returns the number of bytes written, or a negative number
+// on error.
+OPENSSL_EXPORT int DH_compute_key(uint8_t *out, const BIGNUM *peers_key,
+                                  DH *dh);
+
+
+// Utility functions.
+
+// DH_size returns the number of bytes in the DH group's prime.
+OPENSSL_EXPORT int DH_size(const DH *dh);
+
+// DH_num_bits returns the minimum number of bits needed to represent the
+// absolute value of the DH group's prime.
+OPENSSL_EXPORT unsigned DH_num_bits(const DH *dh);
+
+#define DH_CHECK_P_NOT_PRIME 0x01
+#define DH_CHECK_P_NOT_SAFE_PRIME 0x02
+#define DH_CHECK_UNABLE_TO_CHECK_GENERATOR 0x04
+#define DH_CHECK_NOT_SUITABLE_GENERATOR 0x08
+#define DH_CHECK_Q_NOT_PRIME 0x10
+#define DH_CHECK_INVALID_Q_VALUE 0x20
+#define DH_CHECK_INVALID_J_VALUE 0x40
+
+// These are compatibility defines.
+#define DH_NOT_SUITABLE_GENERATOR DH_CHECK_NOT_SUITABLE_GENERATOR
+#define DH_UNABLE_TO_CHECK_GENERATOR DH_CHECK_UNABLE_TO_CHECK_GENERATOR
+
+// DH_check checks the suitability of |dh| as a Diffie-Hellman group. and sets
+// |DH_CHECK_*| flags in |*out_flags| if it finds any errors. It returns one if
+// |*out_flags| was successfully set and zero on error.
+//
+// Note: these checks may be quite computationally expensive.
+OPENSSL_EXPORT int DH_check(const DH *dh, int *out_flags);
+
+#define DH_CHECK_PUBKEY_TOO_SMALL 0x1
+#define DH_CHECK_PUBKEY_TOO_LARGE 0x2
+#define DH_CHECK_PUBKEY_INVALID 0x4
+
+// DH_check_pub_key checks the suitability of |pub_key| as a public key for the
+// DH group in |dh| and sets |DH_CHECK_PUBKEY_*| flags in |*out_flags| if it
+// finds any errors. It returns one if |*out_flags| was successfully set and
+// zero on error.
+OPENSSL_EXPORT int DH_check_pub_key(const DH *dh, const BIGNUM *pub_key,
+                                    int *out_flags);
+
+// DHparams_dup allocates a fresh |DH| and copies the parameters from |dh| into
+// it. It returns the new |DH| or NULL on error.
+OPENSSL_EXPORT DH *DHparams_dup(const DH *dh);
+
+
+// ASN.1 functions.
+
+// DH_parse_parameters decodes a DER-encoded DHParameter structure (PKCS #3)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DH| or NULL on
+// error.
+OPENSSL_EXPORT DH *DH_parse_parameters(CBS *cbs);
+
+// DH_marshal_parameters marshals |dh| as a DER-encoded DHParameter structure
+// (PKCS #3) and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int DH_marshal_parameters(CBB *cbb, const DH *dh);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DH_get_ex_new_index(long argl, void *argp,
+                                       CRYPTO_EX_unused *unused,
+                                       CRYPTO_EX_dup *dup_unused,
+                                       CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DH_set_ex_data(DH *d, int idx, void *arg);
+OPENSSL_EXPORT void *DH_get_ex_data(DH *d, int idx);
+
+
+// Deprecated functions.
+
+// DH_generate_parameters behaves like |DH_generate_parameters_ex|, which is
+// what you should use instead. It returns NULL on error, or a newly-allocated
+// |DH| on success. This function is provided for compatibility only.
+OPENSSL_EXPORT DH *DH_generate_parameters(int prime_len, int generator,
+                                          void (*callback)(int, int, void *),
+                                          void *cb_arg);
+
+// d2i_DHparams parses an ASN.1, DER encoded Diffie-Hellman parameters structure
+// from |len| bytes at |*inp|. If |ret| is not NULL then, on exit, a pointer to
+// the result is in |*ret|. Note that, even if |*ret| is already non-NULL on
+// entry, it will not be written to. Rather, a fresh |DH| is allocated and the
+// previous one is freed.
+//
+// On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DH_parse_parameters| instead.
+OPENSSL_EXPORT DH *d2i_DHparams(DH **ret, const unsigned char **inp, long len);
+
+// i2d_DHparams marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |DH_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DHparams(const DH *in, unsigned char **outp);
+
+
+struct dh_st {
+  BIGNUM *p;
+  BIGNUM *g;
+  BIGNUM *pub_key;   // g^x mod p
+  BIGNUM *priv_key;  // x
+
+  // priv_length contains the length, in bits, of the private value. If zero,
+  // the private value will be the same length as |p|.
+  unsigned priv_length;
+
+  CRYPTO_MUTEX method_mont_p_lock;
+  BN_MONT_CTX *method_mont_p;
+
+  // Place holders if we want to do X9.42 DH
+  BIGNUM *q;
+  BIGNUM *j;
+  unsigned char *seed;
+  int seedlen;
+  BIGNUM *counter;
+
+  int flags;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DH, DH_free)
+BORINGSSL_MAKE_UP_REF(DH, DH_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DH_R_BAD_GENERATOR 100
+#define DH_R_INVALID_PUBKEY 101
+#define DH_R_MODULUS_TOO_LARGE 102
+#define DH_R_NO_PRIVATE_VALUE 103
+#define DH_R_DECODE_ERROR 104
+#define DH_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_DH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h
new file mode 100644
index 0000000..e364407
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h	
@@ -0,0 +1,330 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DIGEST_H
+#define OPENSSL_HEADER_DIGEST_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Digest functions.
+//
+// An EVP_MD abstracts the details of a specific hash function allowing code to
+// deal with the concept of a "hash function" without needing to know exactly
+// which hash function it is.
+
+
+// Hash algorithms.
+//
+// The following functions return |EVP_MD| objects that implement the named hash
+// function.
+
+OPENSSL_EXPORT const EVP_MD *EVP_md4(void);
+OPENSSL_EXPORT const EVP_MD *EVP_md5(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha1(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha224(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha256(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha384(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha512(void);
+
+// EVP_md5_sha1 is a TLS-specific |EVP_MD| which computes the concatenation of
+// MD5 and SHA-1, as used in TLS 1.1 and below.
+OPENSSL_EXPORT const EVP_MD *EVP_md5_sha1(void);
+
+// EVP_get_digestbynid returns an |EVP_MD| for the given NID, or NULL if no
+// such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbynid(int nid);
+
+// EVP_get_digestbyobj returns an |EVP_MD| for the given |ASN1_OBJECT|, or NULL
+// if no such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj);
+
+
+// Digest contexts.
+//
+// An EVP_MD_CTX represents the state of a specific digest operation in
+// progress.
+
+// EVP_MD_CTX_init initialises an, already allocated, |EVP_MD_CTX|. This is the
+// same as setting the structure to zero.
+OPENSSL_EXPORT void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_new allocates and initialises a fresh |EVP_MD_CTX| and returns
+// it, or NULL on allocation failure. The caller must use |EVP_MD_CTX_free| to
+// release the resulting object.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_new(void);
+
+// EVP_MD_CTX_cleanup frees any resources owned by |ctx| and resets it to a
+// freshly initialised state. It does not free |ctx| itself. It returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_free calls |EVP_MD_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_copy_ex sets |out|, which must already be initialised, to be a
+// copy of |in|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_MD_CTX_reset calls |EVP_MD_CTX_cleanup| followed by |EVP_MD_CTX_init|. It
+// returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
+
+
+// Digest operations.
+
+// EVP_DigestInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh hashing operation using |type|. It returns one on
+// success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *engine);
+
+// EVP_DigestInit acts like |EVP_DigestInit_ex| except that |ctx| is
+// initialised before use.
+OPENSSL_EXPORT int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_DigestUpdate hashes |len| bytes from |data| into the hashing operation
+// in |ctx|. It returns one.
+OPENSSL_EXPORT int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_MAX_MD_SIZE is the largest digest size supported, in bytes.
+// Functions that output a digest generally require the buffer have
+// at least this much space.
+#define EVP_MAX_MD_SIZE 64  // SHA-512 is the longest so far.
+
+// EVP_MAX_MD_BLOCK_SIZE is the largest digest block size supported, in
+// bytes.
+#define EVP_MAX_MD_BLOCK_SIZE 128  // SHA-512 is the longest so far.
+
+// EVP_DigestFinal_ex finishes the digest in |ctx| and writes the output to
+// |md_out|. |EVP_MD_CTX_size| bytes are written, which is at most
+// |EVP_MAX_MD_SIZE|. If |out_size| is not NULL then |*out_size| is set to the
+// number of bytes written. It returns one. After this call, the hash cannot be
+// updated or finished again until |EVP_DigestInit_ex| is called to start
+// another hashing operation.
+OPENSSL_EXPORT int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                      unsigned int *out_size);
+
+// EVP_DigestFinal acts like |EVP_DigestFinal_ex| except that
+// |EVP_MD_CTX_cleanup| is called on |ctx| before returning.
+OPENSSL_EXPORT int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                   unsigned int *out_size);
+
+// EVP_Digest performs a complete hashing operation in one call. It hashes |len|
+// bytes from |data| and writes the digest to |md_out|. |EVP_MD_CTX_size| bytes
+// are written, which is at most |EVP_MAX_MD_SIZE|. If |out_size| is not NULL
+// then |*out_size| is set to the number of bytes written. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int EVP_Digest(const void *data, size_t len, uint8_t *md_out,
+                              unsigned int *md_out_size, const EVP_MD *type,
+                              ENGINE *impl);
+
+
+// Digest function accessors.
+//
+// These functions allow code to learn details about an abstract hash
+// function.
+
+// EVP_MD_type returns a NID identifying |md|. (For example, |NID_sha256|.)
+OPENSSL_EXPORT int EVP_MD_type(const EVP_MD *md);
+
+// EVP_MD_flags returns the flags for |md|, which is a set of |EVP_MD_FLAG_*|
+// values, ORed together.
+OPENSSL_EXPORT uint32_t EVP_MD_flags(const EVP_MD *md);
+
+// EVP_MD_size returns the digest size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_size(const EVP_MD *md);
+
+// EVP_MD_block_size returns the native block-size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_block_size(const EVP_MD *md);
+
+// EVP_MD_FLAG_PKEY_DIGEST indicates that the digest function is used with a
+// specific public key in order to verify signatures. (For example,
+// EVP_dss1.)
+#define EVP_MD_FLAG_PKEY_DIGEST 1
+
+// EVP_MD_FLAG_DIGALGID_ABSENT indicates that the parameter type in an X.509
+// DigestAlgorithmIdentifier representing this digest function should be
+// undefined rather than NULL.
+#define EVP_MD_FLAG_DIGALGID_ABSENT 2
+
+// EVP_MD_FLAG_XOF indicates that the digest is an extensible-output function
+// (XOF). This flag is defined for compatibility and will never be set in any
+// |EVP_MD| in BoringSSL.
+#define EVP_MD_FLAG_XOF 4
+
+
+// Digest operation accessors.
+
+// EVP_MD_CTX_md returns the underlying digest function, or NULL if one has not
+// been set.
+OPENSSL_EXPORT const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_size returns the digest size of |ctx|, in bytes. It
+// will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_block_size returns the block size of the digest function used by
+// |ctx|, in bytes. It will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_type returns a NID describing the digest function used by |ctx|.
+// (For example, |NID_sha256|.) It will crash if a digest hasn't been set on
+// |ctx|.
+OPENSSL_EXPORT int EVP_MD_CTX_type(const EVP_MD_CTX *ctx);
+
+
+// ASN.1 functions.
+//
+// These functions allow code to parse and serialize AlgorithmIdentifiers for
+// hash functions.
+
+// EVP_parse_digest_algorithm parses an AlgorithmIdentifier structure containing
+// a hash function OID (for example, 2.16.840.1.101.3.4.2.1 is SHA-256) and
+// advances |cbs|. The parameters field may either be omitted or a NULL. It
+// returns the digest function or NULL on error.
+OPENSSL_EXPORT const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs);
+
+// EVP_marshal_digest_algorithm marshals |md| as an AlgorithmIdentifier
+// structure and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md);
+
+
+// Deprecated functions.
+
+// EVP_MD_CTX_copy sets |out|, which must /not/ be initialised, to be a copy of
+// |in|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_add_digest does nothing and returns one. It exists only for
+// compatibility with OpenSSL.
+OPENSSL_EXPORT int EVP_add_digest(const EVP_MD *digest);
+
+// EVP_get_digestbyname returns an |EVP_MD| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyname(const char *);
+
+// EVP_dss1 returns the value of EVP_sha1(). This was provided by OpenSSL to
+// specifiy the original DSA signatures, which were fixed to use SHA-1. Note,
+// however, that attempting to sign or verify DSA signatures with the EVP
+// interface will always fail.
+OPENSSL_EXPORT const EVP_MD *EVP_dss1(void);
+
+// EVP_MD_CTX_create calls |EVP_MD_CTX_new|.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_create(void);
+
+// EVP_MD_CTX_destroy calls |EVP_MD_CTX_free|.
+OPENSSL_EXPORT void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
+
+// EVP_DigestFinalXOF returns zero and adds an error to the error queue.
+// BoringSSL does not support any XOF digests.
+OPENSSL_EXPORT int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, uint8_t *out,
+                                      size_t len);
+
+// EVP_MD_meth_get_flags calls |EVP_MD_flags|.
+OPENSSL_EXPORT uint32_t EVP_MD_meth_get_flags(const EVP_MD *md);
+
+
+struct evp_md_pctx_ops;
+
+struct env_md_ctx_st {
+  // digest is the underlying digest function, or NULL if not set.
+  const EVP_MD *digest;
+  // md_data points to a block of memory that contains the hash-specific
+  // context.
+  void *md_data;
+
+  // pctx is an opaque (at this layer) pointer to additional context that
+  // EVP_PKEY functions may store in this object.
+  EVP_PKEY_CTX *pctx;
+
+  // pctx_ops, if not NULL, points to a vtable that contains functions to
+  // manipulate |pctx|.
+  const struct evp_md_pctx_ops *pctx_ops;
+} /* EVP_MD_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_MD_CTX, EVP_MD_CTX_free)
+
+using ScopedEVP_MD_CTX =
+    internal::StackAllocated<EVP_MD_CTX, int, EVP_MD_CTX_init,
+                             EVP_MD_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define DIGEST_R_INPUT_NOT_INITIALIZED 100
+#define DIGEST_R_DECODE_ERROR 101
+#define DIGEST_R_UNKNOWN_HASH 102
+
+#endif  // OPENSSL_HEADER_DIGEST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.back
new file mode 100644
index 0000000..c3ceb7f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.back	
@@ -0,0 +1,330 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DIGEST_H
+#define OPENSSL_HEADER_DIGEST_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Digest functions.
+//
+// An EVP_MD abstracts the details of a specific hash function allowing code to
+// deal with the concept of a "hash function" without needing to know exactly
+// which hash function it is.
+
+
+// Hash algorithms.
+//
+// The following functions return |EVP_MD| objects that implement the named hash
+// function.
+
+OPENSSL_EXPORT const EVP_MD *EVP_md4(void);
+OPENSSL_EXPORT const EVP_MD *EVP_md5(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha1(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha224(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha256(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha384(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha512(void);
+
+// EVP_md5_sha1 is a TLS-specific |EVP_MD| which computes the concatenation of
+// MD5 and SHA-1, as used in TLS 1.1 and below.
+OPENSSL_EXPORT const EVP_MD *EVP_md5_sha1(void);
+
+// EVP_get_digestbynid returns an |EVP_MD| for the given NID, or NULL if no
+// such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbynid(int nid);
+
+// EVP_get_digestbyobj returns an |EVP_MD| for the given |ASN1_OBJECT|, or NULL
+// if no such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj);
+
+
+// Digest contexts.
+//
+// An EVP_MD_CTX represents the state of a specific digest operation in
+// progress.
+
+// EVP_MD_CTX_init initialises an, already allocated, |EVP_MD_CTX|. This is the
+// same as setting the structure to zero.
+OPENSSL_EXPORT void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_new allocates and initialises a fresh |EVP_MD_CTX| and returns
+// it, or NULL on allocation failure. The caller must use |EVP_MD_CTX_free| to
+// release the resulting object.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_new(void);
+
+// EVP_MD_CTX_cleanup frees any resources owned by |ctx| and resets it to a
+// freshly initialised state. It does not free |ctx| itself. It returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_free calls |EVP_MD_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_copy_ex sets |out|, which must already be initialised, to be a
+// copy of |in|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_MD_CTX_reset calls |EVP_MD_CTX_cleanup| followed by |EVP_MD_CTX_init|. It
+// returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
+
+
+// Digest operations.
+
+// EVP_DigestInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh hashing operation using |type|. It returns one on
+// success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *engine);
+
+// EVP_DigestInit acts like |EVP_DigestInit_ex| except that |ctx| is
+// initialised before use.
+OPENSSL_EXPORT int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_DigestUpdate hashes |len| bytes from |data| into the hashing operation
+// in |ctx|. It returns one.
+OPENSSL_EXPORT int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_MAX_MD_SIZE is the largest digest size supported, in bytes.
+// Functions that output a digest generally require the buffer have
+// at least this much space.
+#define EVP_MAX_MD_SIZE 64  // SHA-512 is the longest so far.
+
+// EVP_MAX_MD_BLOCK_SIZE is the largest digest block size supported, in
+// bytes.
+#define EVP_MAX_MD_BLOCK_SIZE 128  // SHA-512 is the longest so far.
+
+// EVP_DigestFinal_ex finishes the digest in |ctx| and writes the output to
+// |md_out|. |EVP_MD_CTX_size| bytes are written, which is at most
+// |EVP_MAX_MD_SIZE|. If |out_size| is not NULL then |*out_size| is set to the
+// number of bytes written. It returns one. After this call, the hash cannot be
+// updated or finished again until |EVP_DigestInit_ex| is called to start
+// another hashing operation.
+OPENSSL_EXPORT int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                      unsigned int *out_size);
+
+// EVP_DigestFinal acts like |EVP_DigestFinal_ex| except that
+// |EVP_MD_CTX_cleanup| is called on |ctx| before returning.
+OPENSSL_EXPORT int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                   unsigned int *out_size);
+
+// EVP_Digest performs a complete hashing operation in one call. It hashes |len|
+// bytes from |data| and writes the digest to |md_out|. |EVP_MD_CTX_size| bytes
+// are written, which is at most |EVP_MAX_MD_SIZE|. If |out_size| is not NULL
+// then |*out_size| is set to the number of bytes written. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int EVP_Digest(const void *data, size_t len, uint8_t *md_out,
+                              unsigned int *md_out_size, const EVP_MD *type,
+                              ENGINE *impl);
+
+
+// Digest function accessors.
+//
+// These functions allow code to learn details about an abstract hash
+// function.
+
+// EVP_MD_type returns a NID identifying |md|. (For example, |NID_sha256|.)
+OPENSSL_EXPORT int EVP_MD_type(const EVP_MD *md);
+
+// EVP_MD_flags returns the flags for |md|, which is a set of |EVP_MD_FLAG_*|
+// values, ORed together.
+OPENSSL_EXPORT uint32_t EVP_MD_flags(const EVP_MD *md);
+
+// EVP_MD_size returns the digest size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_size(const EVP_MD *md);
+
+// EVP_MD_block_size returns the native block-size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_block_size(const EVP_MD *md);
+
+// EVP_MD_FLAG_PKEY_DIGEST indicates that the digest function is used with a
+// specific public key in order to verify signatures. (For example,
+// EVP_dss1.)
+#define EVP_MD_FLAG_PKEY_DIGEST 1
+
+// EVP_MD_FLAG_DIGALGID_ABSENT indicates that the parameter type in an X.509
+// DigestAlgorithmIdentifier representing this digest function should be
+// undefined rather than NULL.
+#define EVP_MD_FLAG_DIGALGID_ABSENT 2
+
+// EVP_MD_FLAG_XOF indicates that the digest is an extensible-output function
+// (XOF). This flag is defined for compatibility and will never be set in any
+// |EVP_MD| in BoringSSL.
+#define EVP_MD_FLAG_XOF 4
+
+
+// Digest operation accessors.
+
+// EVP_MD_CTX_md returns the underlying digest function, or NULL if one has not
+// been set.
+OPENSSL_EXPORT const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_size returns the digest size of |ctx|, in bytes. It
+// will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_block_size returns the block size of the digest function used by
+// |ctx|, in bytes. It will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_type returns a NID describing the digest function used by |ctx|.
+// (For example, |NID_sha256|.) It will crash if a digest hasn't been set on
+// |ctx|.
+OPENSSL_EXPORT int EVP_MD_CTX_type(const EVP_MD_CTX *ctx);
+
+
+// ASN.1 functions.
+//
+// These functions allow code to parse and serialize AlgorithmIdentifiers for
+// hash functions.
+
+// EVP_parse_digest_algorithm parses an AlgorithmIdentifier structure containing
+// a hash function OID (for example, 2.16.840.1.101.3.4.2.1 is SHA-256) and
+// advances |cbs|. The parameters field may either be omitted or a NULL. It
+// returns the digest function or NULL on error.
+OPENSSL_EXPORT const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs);
+
+// EVP_marshal_digest_algorithm marshals |md| as an AlgorithmIdentifier
+// structure and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md);
+
+
+// Deprecated functions.
+
+// EVP_MD_CTX_copy sets |out|, which must /not/ be initialised, to be a copy of
+// |in|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_add_digest does nothing and returns one. It exists only for
+// compatibility with OpenSSL.
+OPENSSL_EXPORT int EVP_add_digest(const EVP_MD *digest);
+
+// EVP_get_digestbyname returns an |EVP_MD| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyname(const char *);
+
+// EVP_dss1 returns the value of EVP_sha1(). This was provided by OpenSSL to
+// specifiy the original DSA signatures, which were fixed to use SHA-1. Note,
+// however, that attempting to sign or verify DSA signatures with the EVP
+// interface will always fail.
+OPENSSL_EXPORT const EVP_MD *EVP_dss1(void);
+
+// EVP_MD_CTX_create calls |EVP_MD_CTX_new|.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_create(void);
+
+// EVP_MD_CTX_destroy calls |EVP_MD_CTX_free|.
+OPENSSL_EXPORT void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
+
+// EVP_DigestFinalXOF returns zero and adds an error to the error queue.
+// BoringSSL does not support any XOF digests.
+OPENSSL_EXPORT int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, uint8_t *out,
+                                      size_t len);
+
+// EVP_MD_meth_get_flags calls |EVP_MD_flags|.
+OPENSSL_EXPORT uint32_t EVP_MD_meth_get_flags(const EVP_MD *md);
+
+
+struct evp_md_pctx_ops;
+
+struct env_md_ctx_st {
+  // digest is the underlying digest function, or NULL if not set.
+  const EVP_MD *digest;
+  // md_data points to a block of memory that contains the hash-specific
+  // context.
+  void *md_data;
+
+  // pctx is an opaque (at this layer) pointer to additional context that
+  // EVP_PKEY functions may store in this object.
+  EVP_PKEY_CTX *pctx;
+
+  // pctx_ops, if not NULL, points to a vtable that contains functions to
+  // manipulate |pctx|.
+  const struct evp_md_pctx_ops *pctx_ops;
+} /* EVP_MD_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_MD_CTX, EVP_MD_CTX_free)
+
+using ScopedEVP_MD_CTX =
+    internal::StackAllocated<EVP_MD_CTX, int, EVP_MD_CTX_init,
+                             EVP_MD_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define DIGEST_R_INPUT_NOT_INITIALIZED 100
+#define DIGEST_R_DECODE_ERROR 101
+#define DIGEST_R_UNKNOWN_HASH 102
+
+#endif  // OPENSSL_HEADER_DIGEST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.grpc_back
new file mode 100644
index 0000000..c3ceb7f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/digest.h.grpc_back	
@@ -0,0 +1,330 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DIGEST_H
+#define OPENSSL_HEADER_DIGEST_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Digest functions.
+//
+// An EVP_MD abstracts the details of a specific hash function allowing code to
+// deal with the concept of a "hash function" without needing to know exactly
+// which hash function it is.
+
+
+// Hash algorithms.
+//
+// The following functions return |EVP_MD| objects that implement the named hash
+// function.
+
+OPENSSL_EXPORT const EVP_MD *EVP_md4(void);
+OPENSSL_EXPORT const EVP_MD *EVP_md5(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha1(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha224(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha256(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha384(void);
+OPENSSL_EXPORT const EVP_MD *EVP_sha512(void);
+
+// EVP_md5_sha1 is a TLS-specific |EVP_MD| which computes the concatenation of
+// MD5 and SHA-1, as used in TLS 1.1 and below.
+OPENSSL_EXPORT const EVP_MD *EVP_md5_sha1(void);
+
+// EVP_get_digestbynid returns an |EVP_MD| for the given NID, or NULL if no
+// such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbynid(int nid);
+
+// EVP_get_digestbyobj returns an |EVP_MD| for the given |ASN1_OBJECT|, or NULL
+// if no such digest is known.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj);
+
+
+// Digest contexts.
+//
+// An EVP_MD_CTX represents the state of a specific digest operation in
+// progress.
+
+// EVP_MD_CTX_init initialises an, already allocated, |EVP_MD_CTX|. This is the
+// same as setting the structure to zero.
+OPENSSL_EXPORT void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_new allocates and initialises a fresh |EVP_MD_CTX| and returns
+// it, or NULL on allocation failure. The caller must use |EVP_MD_CTX_free| to
+// release the resulting object.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_new(void);
+
+// EVP_MD_CTX_cleanup frees any resources owned by |ctx| and resets it to a
+// freshly initialised state. It does not free |ctx| itself. It returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_free calls |EVP_MD_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_copy_ex sets |out|, which must already be initialised, to be a
+// copy of |in|. It returns one on success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_MD_CTX_reset calls |EVP_MD_CTX_cleanup| followed by |EVP_MD_CTX_init|. It
+// returns one.
+OPENSSL_EXPORT int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
+
+
+// Digest operations.
+
+// EVP_DigestInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh hashing operation using |type|. It returns one on
+// success and zero on allocation failure.
+OPENSSL_EXPORT int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *engine);
+
+// EVP_DigestInit acts like |EVP_DigestInit_ex| except that |ctx| is
+// initialised before use.
+OPENSSL_EXPORT int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_DigestUpdate hashes |len| bytes from |data| into the hashing operation
+// in |ctx|. It returns one.
+OPENSSL_EXPORT int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_MAX_MD_SIZE is the largest digest size supported, in bytes.
+// Functions that output a digest generally require the buffer have
+// at least this much space.
+#define EVP_MAX_MD_SIZE 64  // SHA-512 is the longest so far.
+
+// EVP_MAX_MD_BLOCK_SIZE is the largest digest block size supported, in
+// bytes.
+#define EVP_MAX_MD_BLOCK_SIZE 128  // SHA-512 is the longest so far.
+
+// EVP_DigestFinal_ex finishes the digest in |ctx| and writes the output to
+// |md_out|. |EVP_MD_CTX_size| bytes are written, which is at most
+// |EVP_MAX_MD_SIZE|. If |out_size| is not NULL then |*out_size| is set to the
+// number of bytes written. It returns one. After this call, the hash cannot be
+// updated or finished again until |EVP_DigestInit_ex| is called to start
+// another hashing operation.
+OPENSSL_EXPORT int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                      unsigned int *out_size);
+
+// EVP_DigestFinal acts like |EVP_DigestFinal_ex| except that
+// |EVP_MD_CTX_cleanup| is called on |ctx| before returning.
+OPENSSL_EXPORT int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md_out,
+                                   unsigned int *out_size);
+
+// EVP_Digest performs a complete hashing operation in one call. It hashes |len|
+// bytes from |data| and writes the digest to |md_out|. |EVP_MD_CTX_size| bytes
+// are written, which is at most |EVP_MAX_MD_SIZE|. If |out_size| is not NULL
+// then |*out_size| is set to the number of bytes written. It returns one on
+// success and zero otherwise.
+OPENSSL_EXPORT int EVP_Digest(const void *data, size_t len, uint8_t *md_out,
+                              unsigned int *md_out_size, const EVP_MD *type,
+                              ENGINE *impl);
+
+
+// Digest function accessors.
+//
+// These functions allow code to learn details about an abstract hash
+// function.
+
+// EVP_MD_type returns a NID identifying |md|. (For example, |NID_sha256|.)
+OPENSSL_EXPORT int EVP_MD_type(const EVP_MD *md);
+
+// EVP_MD_flags returns the flags for |md|, which is a set of |EVP_MD_FLAG_*|
+// values, ORed together.
+OPENSSL_EXPORT uint32_t EVP_MD_flags(const EVP_MD *md);
+
+// EVP_MD_size returns the digest size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_size(const EVP_MD *md);
+
+// EVP_MD_block_size returns the native block-size of |md|, in bytes.
+OPENSSL_EXPORT size_t EVP_MD_block_size(const EVP_MD *md);
+
+// EVP_MD_FLAG_PKEY_DIGEST indicates that the digest function is used with a
+// specific public key in order to verify signatures. (For example,
+// EVP_dss1.)
+#define EVP_MD_FLAG_PKEY_DIGEST 1
+
+// EVP_MD_FLAG_DIGALGID_ABSENT indicates that the parameter type in an X.509
+// DigestAlgorithmIdentifier representing this digest function should be
+// undefined rather than NULL.
+#define EVP_MD_FLAG_DIGALGID_ABSENT 2
+
+// EVP_MD_FLAG_XOF indicates that the digest is an extensible-output function
+// (XOF). This flag is defined for compatibility and will never be set in any
+// |EVP_MD| in BoringSSL.
+#define EVP_MD_FLAG_XOF 4
+
+
+// Digest operation accessors.
+
+// EVP_MD_CTX_md returns the underlying digest function, or NULL if one has not
+// been set.
+OPENSSL_EXPORT const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_size returns the digest size of |ctx|, in bytes. It
+// will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_block_size returns the block size of the digest function used by
+// |ctx|, in bytes. It will crash if a digest hasn't been set on |ctx|.
+OPENSSL_EXPORT size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx);
+
+// EVP_MD_CTX_type returns a NID describing the digest function used by |ctx|.
+// (For example, |NID_sha256|.) It will crash if a digest hasn't been set on
+// |ctx|.
+OPENSSL_EXPORT int EVP_MD_CTX_type(const EVP_MD_CTX *ctx);
+
+
+// ASN.1 functions.
+//
+// These functions allow code to parse and serialize AlgorithmIdentifiers for
+// hash functions.
+
+// EVP_parse_digest_algorithm parses an AlgorithmIdentifier structure containing
+// a hash function OID (for example, 2.16.840.1.101.3.4.2.1 is SHA-256) and
+// advances |cbs|. The parameters field may either be omitted or a NULL. It
+// returns the digest function or NULL on error.
+OPENSSL_EXPORT const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs);
+
+// EVP_marshal_digest_algorithm marshals |md| as an AlgorithmIdentifier
+// structure and appends the result to |cbb|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md);
+
+
+// Deprecated functions.
+
+// EVP_MD_CTX_copy sets |out|, which must /not/ be initialised, to be a copy of
+// |in|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
+
+// EVP_add_digest does nothing and returns one. It exists only for
+// compatibility with OpenSSL.
+OPENSSL_EXPORT int EVP_add_digest(const EVP_MD *digest);
+
+// EVP_get_digestbyname returns an |EVP_MD| given a human readable name in
+// |name|, or NULL if the name is unknown.
+OPENSSL_EXPORT const EVP_MD *EVP_get_digestbyname(const char *);
+
+// EVP_dss1 returns the value of EVP_sha1(). This was provided by OpenSSL to
+// specifiy the original DSA signatures, which were fixed to use SHA-1. Note,
+// however, that attempting to sign or verify DSA signatures with the EVP
+// interface will always fail.
+OPENSSL_EXPORT const EVP_MD *EVP_dss1(void);
+
+// EVP_MD_CTX_create calls |EVP_MD_CTX_new|.
+OPENSSL_EXPORT EVP_MD_CTX *EVP_MD_CTX_create(void);
+
+// EVP_MD_CTX_destroy calls |EVP_MD_CTX_free|.
+OPENSSL_EXPORT void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
+
+// EVP_DigestFinalXOF returns zero and adds an error to the error queue.
+// BoringSSL does not support any XOF digests.
+OPENSSL_EXPORT int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, uint8_t *out,
+                                      size_t len);
+
+// EVP_MD_meth_get_flags calls |EVP_MD_flags|.
+OPENSSL_EXPORT uint32_t EVP_MD_meth_get_flags(const EVP_MD *md);
+
+
+struct evp_md_pctx_ops;
+
+struct env_md_ctx_st {
+  // digest is the underlying digest function, or NULL if not set.
+  const EVP_MD *digest;
+  // md_data points to a block of memory that contains the hash-specific
+  // context.
+  void *md_data;
+
+  // pctx is an opaque (at this layer) pointer to additional context that
+  // EVP_PKEY functions may store in this object.
+  EVP_PKEY_CTX *pctx;
+
+  // pctx_ops, if not NULL, points to a vtable that contains functions to
+  // manipulate |pctx|.
+  const struct evp_md_pctx_ops *pctx_ops;
+} /* EVP_MD_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_MD_CTX, EVP_MD_CTX_free)
+
+using ScopedEVP_MD_CTX =
+    internal::StackAllocated<EVP_MD_CTX, int, EVP_MD_CTX_init,
+                             EVP_MD_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#define DIGEST_R_INPUT_NOT_INITIALIZED 100
+#define DIGEST_R_DECODE_ERROR 101
+#define DIGEST_R_UNKNOWN_HASH 102
+
+#endif  // OPENSSL_HEADER_DIGEST_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h
new file mode 100644
index 0000000..45fdd5b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h	
@@ -0,0 +1,441 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#ifndef OPENSSL_HEADER_DSA_H
+#define OPENSSL_HEADER_DSA_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DSA contains functions for signing and verifying with the Digital Signature
+// Algorithm.
+//
+// This module is deprecated and retained for legacy reasons only. It is not
+// considered a priority for performance or hardening work. Do not use it in
+// new code. Use Ed25519, ECDSA with P-256, or RSA instead.
+
+
+// Allocation and destruction.
+
+// DSA_new returns a new, empty DSA object or NULL on error.
+OPENSSL_EXPORT DSA *DSA_new(void);
+
+// DSA_free decrements the reference count of |dsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void DSA_free(DSA *dsa);
+
+// DSA_up_ref increments the reference count of |dsa| and returns one.
+OPENSSL_EXPORT int DSA_up_ref(DSA *dsa);
+
+
+// Properties.
+
+// DSA_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dsa|'s
+// public and private key, respectively. If |dsa| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DSA_get0_key(const DSA *dsa, const BIGNUM **out_pub_key,
+                                 const BIGNUM **out_priv_key);
+
+// DSA_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dsa|'s
+// p, q, and g parameters, respectively.
+OPENSSL_EXPORT void DSA_get0_pqg(const DSA *dsa, const BIGNUM **out_p,
+                                 const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DSA_set0_key sets |dsa|'s public and private key to |pub_key| and |priv_key|,
+// respectively, if non-NULL. On success, it takes ownership of each argument
+// and returns one. Otherwise, it returns zero.
+//
+// |priv_key| may be NULL, but |pub_key| must either be non-NULL or already
+// configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_key(DSA *dsa, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DSA_set0_pqg sets |dsa|'s parameters to |p|, |q|, and |g|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_pqg(DSA *dsa, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Parameter generation.
+
+// DSA_generate_parameters_ex generates a set of DSA parameters by following
+// the procedure given in FIPS 186-4, appendix A.
+// (http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf)
+//
+// The larger prime will have a length of |bits| (e.g. 2048). The |seed| value
+// allows others to generate and verify the same parameters and should be
+// random input which is kept for reference. If |out_counter| or |out_h| are
+// not NULL then the counter and h value used in the generation are written to
+// them.
+//
+// The |cb| argument is passed to |BN_generate_prime_ex| and is thus called
+// during the generation process in order to indicate progress. See the
+// comments for that function for details. In addition to the calls made by
+// |BN_generate_prime_ex|, |DSA_generate_parameters_ex| will call it with
+// |event| equal to 2 and 3 at different stages of the process.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int DSA_generate_parameters_ex(DSA *dsa, unsigned bits,
+                                              const uint8_t *seed,
+                                              size_t seed_len, int *out_counter,
+                                              unsigned long *out_h,
+                                              BN_GENCB *cb);
+
+// DSAparams_dup returns a freshly allocated |DSA| that contains a copy of the
+// parameters from |dsa|. It returns NULL on error.
+OPENSSL_EXPORT DSA *DSAparams_dup(const DSA *dsa);
+
+
+// Key generation.
+
+// DSA_generate_key generates a public/private key pair in |dsa|, which must
+// already have parameters setup. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int DSA_generate_key(DSA *dsa);
+
+
+// Signatures.
+
+// DSA_SIG_st (aka |DSA_SIG|) contains a DSA signature as a pair of integers.
+struct DSA_SIG_st {
+  BIGNUM *r, *s;
+};
+
+// DSA_SIG_new returns a freshly allocated, DIG_SIG structure or NULL on error.
+// Both |r| and |s| in the signature will be NULL.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_new(void);
+
+// DSA_SIG_free frees the contents of |sig| and then frees |sig| itself.
+OPENSSL_EXPORT void DSA_SIG_free(DSA_SIG *sig);
+
+// DSA_do_sign returns a signature of the hash in |digest| by the key in |dsa|
+// and returns an allocated, DSA_SIG structure, or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len,
+                                    const DSA *dsa);
+
+// DSA_do_verify verifies that |sig| is a valid signature, by the public key in
+// |dsa|, of the hash in |digest|. It returns one if so, zero if invalid and -1
+// on error.
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                 DSA_SIG *sig, const DSA *dsa);
+
+// DSA_do_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid signature, by the public key in |dsa| of the hash in |digest|
+// and, if so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                                          size_t digest_len, DSA_SIG *sig,
+                                          const DSA *dsa);
+
+
+// ASN.1 signatures.
+//
+// These functions also perform DSA signature operations, but deal with ASN.1
+// encoded signatures as opposed to raw |BIGNUM|s. If you don't know what
+// encoding a DSA signature is in, it's probably ASN.1.
+
+// DSA_sign signs |digest| with the key in |dsa| and writes the resulting
+// signature, in ASN.1 form, to |out_sig| and the length of the signature to
+// |*out_siglen|. There must be, at least, |DSA_size(dsa)| bytes of space in
+// |out_sig|. It returns one on success and zero otherwise.
+//
+// (The |type| argument is ignored.)
+OPENSSL_EXPORT int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+                            uint8_t *out_sig, unsigned int *out_siglen,
+                            const DSA *dsa);
+
+// DSA_verify verifies that |sig| is a valid, ASN.1 signature, by the public
+// key in |dsa|, of the hash in |digest|. It returns one if so, zero if invalid
+// and -1 on error.
+//
+// (The |type| argument is ignored.)
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_verify(int type, const uint8_t *digest,
+                              size_t digest_len, const uint8_t *sig,
+                              size_t sig_len, const DSA *dsa);
+
+// DSA_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid, ASN.1 signature, by the public key in |dsa|, of the hash in
+// |digest|. If so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                                       size_t digest_len, const uint8_t *sig,
+                                       size_t sig_len, const DSA *dsa);
+
+// DSA_size returns the size, in bytes, of an ASN.1 encoded, DSA signature
+// generated by |dsa|. Parameters must already have been setup in |dsa|.
+OPENSSL_EXPORT int DSA_size(const DSA *dsa);
+
+
+// ASN.1 encoding.
+
+// DSA_SIG_parse parses a DER-encoded DSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA_SIG| or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_parse(CBS *cbs);
+
+// DSA_SIG_marshal marshals |sig| as a DER-encoded DSA-Sig-Value and appends the
+// result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DSA_SIG_marshal(CBB *cbb, const DSA_SIG *sig);
+
+// DSA_parse_public_key parses a DER-encoded DSA public key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_public_key(CBS *cbs);
+
+// DSA_marshal_public_key marshals |dsa| as a DER-encoded DSA public key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_public_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_private_key parses a DER-encoded DSA private key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_private_key(CBS *cbs);
+
+// DSA_marshal_private_key marshals |dsa| as a DER-encoded DSA private key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_private_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_parameters parses a DER-encoded Dss-Parms structure (RFC 3279)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DSA| or NULL on
+// error.
+OPENSSL_EXPORT DSA *DSA_parse_parameters(CBS *cbs);
+
+// DSA_marshal_parameters marshals |dsa| as a DER-encoded Dss-Parms structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int DSA_marshal_parameters(CBB *cbb, const DSA *dsa);
+
+
+// Conversion.
+
+// DSA_dup_DH returns a |DH| constructed from the parameters of |dsa|. This is
+// sometimes needed when Diffie-Hellman parameters are stored in the form of
+// DSA parameters. It returns an allocated |DH| on success or NULL on error.
+OPENSSL_EXPORT DH *DSA_dup_DH(const DSA *dsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DSA_set_ex_data(DSA *dsa, int idx, void *arg);
+OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *dsa, int idx);
+
+
+// Deprecated functions.
+
+// d2i_DSA_SIG parses an ASN.1, DER-encoded, DSA signature from |len| bytes at
+// |*inp|. If |out_sig| is not NULL then, on exit, a pointer to the result is
+// in |*out_sig|. Note that, even if |*out_sig| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |DSA_SIG| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// Use |DSA_SIG_parse| instead.
+OPENSSL_EXPORT DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp,
+                                    long len);
+
+// i2d_DSA_SIG marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or not,
+// or a negative value on error.
+//
+// Use |DSA_SIG_marshal| instead.
+OPENSSL_EXPORT int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp);
+
+// d2i_DSAPublicKey parses an ASN.1, DER-encoded, DSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*ou| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_public_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPublicKey marshals a public key from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_public_key| instead.
+OPENSSL_EXPORT int i2d_DSAPublicKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAPrivateKey parses an ASN.1, DER-encoded, DSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_private_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPrivateKey marshals a private key from |in| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_DSAPrivateKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAparams parses ASN.1, DER-encoded, DSA parameters from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_parameters| instead.
+OPENSSL_EXPORT DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAparams marshals DSA parameters from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DSAparams(const DSA *in, uint8_t **outp);
+
+// DSA_generate_parameters is a deprecated version of
+// |DSA_generate_parameters_ex| that creates and returns a |DSA*|. Don't use
+// it.
+OPENSSL_EXPORT DSA *DSA_generate_parameters(int bits, unsigned char *seed,
+                                            int seed_len, int *counter_ret,
+                                            unsigned long *h_ret,
+                                            void (*callback)(int, int, void *),
+                                            void *cb_arg);
+
+
+struct dsa_st {
+  long version;
+  BIGNUM *p;
+  BIGNUM *q;  // == 20
+  BIGNUM *g;
+
+  BIGNUM *pub_key;   // y public key
+  BIGNUM *priv_key;  // x private key
+
+  int flags;
+  // Normally used to cache montgomery values
+  CRYPTO_MUTEX method_mont_lock;
+  BN_MONT_CTX *method_mont_p;
+  BN_MONT_CTX *method_mont_q;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DSA, DSA_free)
+BORINGSSL_MAKE_UP_REF(DSA, DSA_up_ref)
+BORINGSSL_MAKE_DELETER(DSA_SIG, DSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DSA_R_BAD_Q_VALUE 100
+#define DSA_R_MISSING_PARAMETERS 101
+#define DSA_R_MODULUS_TOO_LARGE 102
+#define DSA_R_NEED_NEW_SETUP_VALUES 103
+#define DSA_R_BAD_VERSION 104
+#define DSA_R_DECODE_ERROR 105
+#define DSA_R_ENCODE_ERROR 106
+#define DSA_R_INVALID_PARAMETERS 107
+
+#endif  // OPENSSL_HEADER_DSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.back
new file mode 100644
index 0000000..8e3b9b3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.back	
@@ -0,0 +1,441 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#ifndef OPENSSL_HEADER_DSA_H
+#define OPENSSL_HEADER_DSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DSA contains functions for signing and verifying with the Digital Signature
+// Algorithm.
+//
+// This module is deprecated and retained for legacy reasons only. It is not
+// considered a priority for performance or hardening work. Do not use it in
+// new code. Use Ed25519, ECDSA with P-256, or RSA instead.
+
+
+// Allocation and destruction.
+
+// DSA_new returns a new, empty DSA object or NULL on error.
+OPENSSL_EXPORT DSA *DSA_new(void);
+
+// DSA_free decrements the reference count of |dsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void DSA_free(DSA *dsa);
+
+// DSA_up_ref increments the reference count of |dsa| and returns one.
+OPENSSL_EXPORT int DSA_up_ref(DSA *dsa);
+
+
+// Properties.
+
+// DSA_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dsa|'s
+// public and private key, respectively. If |dsa| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DSA_get0_key(const DSA *dsa, const BIGNUM **out_pub_key,
+                                 const BIGNUM **out_priv_key);
+
+// DSA_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dsa|'s
+// p, q, and g parameters, respectively.
+OPENSSL_EXPORT void DSA_get0_pqg(const DSA *dsa, const BIGNUM **out_p,
+                                 const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DSA_set0_key sets |dsa|'s public and private key to |pub_key| and |priv_key|,
+// respectively, if non-NULL. On success, it takes ownership of each argument
+// and returns one. Otherwise, it returns zero.
+//
+// |priv_key| may be NULL, but |pub_key| must either be non-NULL or already
+// configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_key(DSA *dsa, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DSA_set0_pqg sets |dsa|'s parameters to |p|, |q|, and |g|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_pqg(DSA *dsa, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Parameter generation.
+
+// DSA_generate_parameters_ex generates a set of DSA parameters by following
+// the procedure given in FIPS 186-4, appendix A.
+// (http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf)
+//
+// The larger prime will have a length of |bits| (e.g. 2048). The |seed| value
+// allows others to generate and verify the same parameters and should be
+// random input which is kept for reference. If |out_counter| or |out_h| are
+// not NULL then the counter and h value used in the generation are written to
+// them.
+//
+// The |cb| argument is passed to |BN_generate_prime_ex| and is thus called
+// during the generation process in order to indicate progress. See the
+// comments for that function for details. In addition to the calls made by
+// |BN_generate_prime_ex|, |DSA_generate_parameters_ex| will call it with
+// |event| equal to 2 and 3 at different stages of the process.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int DSA_generate_parameters_ex(DSA *dsa, unsigned bits,
+                                              const uint8_t *seed,
+                                              size_t seed_len, int *out_counter,
+                                              unsigned long *out_h,
+                                              BN_GENCB *cb);
+
+// DSAparams_dup returns a freshly allocated |DSA| that contains a copy of the
+// parameters from |dsa|. It returns NULL on error.
+OPENSSL_EXPORT DSA *DSAparams_dup(const DSA *dsa);
+
+
+// Key generation.
+
+// DSA_generate_key generates a public/private key pair in |dsa|, which must
+// already have parameters setup. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int DSA_generate_key(DSA *dsa);
+
+
+// Signatures.
+
+// DSA_SIG_st (aka |DSA_SIG|) contains a DSA signature as a pair of integers.
+struct DSA_SIG_st {
+  BIGNUM *r, *s;
+};
+
+// DSA_SIG_new returns a freshly allocated, DIG_SIG structure or NULL on error.
+// Both |r| and |s| in the signature will be NULL.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_new(void);
+
+// DSA_SIG_free frees the contents of |sig| and then frees |sig| itself.
+OPENSSL_EXPORT void DSA_SIG_free(DSA_SIG *sig);
+
+// DSA_do_sign returns a signature of the hash in |digest| by the key in |dsa|
+// and returns an allocated, DSA_SIG structure, or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len,
+                                    const DSA *dsa);
+
+// DSA_do_verify verifies that |sig| is a valid signature, by the public key in
+// |dsa|, of the hash in |digest|. It returns one if so, zero if invalid and -1
+// on error.
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                 DSA_SIG *sig, const DSA *dsa);
+
+// DSA_do_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid signature, by the public key in |dsa| of the hash in |digest|
+// and, if so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                                          size_t digest_len, DSA_SIG *sig,
+                                          const DSA *dsa);
+
+
+// ASN.1 signatures.
+//
+// These functions also perform DSA signature operations, but deal with ASN.1
+// encoded signatures as opposed to raw |BIGNUM|s. If you don't know what
+// encoding a DSA signature is in, it's probably ASN.1.
+
+// DSA_sign signs |digest| with the key in |dsa| and writes the resulting
+// signature, in ASN.1 form, to |out_sig| and the length of the signature to
+// |*out_siglen|. There must be, at least, |DSA_size(dsa)| bytes of space in
+// |out_sig|. It returns one on success and zero otherwise.
+//
+// (The |type| argument is ignored.)
+OPENSSL_EXPORT int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+                            uint8_t *out_sig, unsigned int *out_siglen,
+                            const DSA *dsa);
+
+// DSA_verify verifies that |sig| is a valid, ASN.1 signature, by the public
+// key in |dsa|, of the hash in |digest|. It returns one if so, zero if invalid
+// and -1 on error.
+//
+// (The |type| argument is ignored.)
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_verify(int type, const uint8_t *digest,
+                              size_t digest_len, const uint8_t *sig,
+                              size_t sig_len, const DSA *dsa);
+
+// DSA_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid, ASN.1 signature, by the public key in |dsa|, of the hash in
+// |digest|. If so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                                       size_t digest_len, const uint8_t *sig,
+                                       size_t sig_len, const DSA *dsa);
+
+// DSA_size returns the size, in bytes, of an ASN.1 encoded, DSA signature
+// generated by |dsa|. Parameters must already have been setup in |dsa|.
+OPENSSL_EXPORT int DSA_size(const DSA *dsa);
+
+
+// ASN.1 encoding.
+
+// DSA_SIG_parse parses a DER-encoded DSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA_SIG| or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_parse(CBS *cbs);
+
+// DSA_SIG_marshal marshals |sig| as a DER-encoded DSA-Sig-Value and appends the
+// result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DSA_SIG_marshal(CBB *cbb, const DSA_SIG *sig);
+
+// DSA_parse_public_key parses a DER-encoded DSA public key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_public_key(CBS *cbs);
+
+// DSA_marshal_public_key marshals |dsa| as a DER-encoded DSA public key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_public_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_private_key parses a DER-encoded DSA private key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_private_key(CBS *cbs);
+
+// DSA_marshal_private_key marshals |dsa| as a DER-encoded DSA private key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_private_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_parameters parses a DER-encoded Dss-Parms structure (RFC 3279)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DSA| or NULL on
+// error.
+OPENSSL_EXPORT DSA *DSA_parse_parameters(CBS *cbs);
+
+// DSA_marshal_parameters marshals |dsa| as a DER-encoded Dss-Parms structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int DSA_marshal_parameters(CBB *cbb, const DSA *dsa);
+
+
+// Conversion.
+
+// DSA_dup_DH returns a |DH| constructed from the parameters of |dsa|. This is
+// sometimes needed when Diffie-Hellman parameters are stored in the form of
+// DSA parameters. It returns an allocated |DH| on success or NULL on error.
+OPENSSL_EXPORT DH *DSA_dup_DH(const DSA *dsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DSA_set_ex_data(DSA *dsa, int idx, void *arg);
+OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *dsa, int idx);
+
+
+// Deprecated functions.
+
+// d2i_DSA_SIG parses an ASN.1, DER-encoded, DSA signature from |len| bytes at
+// |*inp|. If |out_sig| is not NULL then, on exit, a pointer to the result is
+// in |*out_sig|. Note that, even if |*out_sig| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |DSA_SIG| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// Use |DSA_SIG_parse| instead.
+OPENSSL_EXPORT DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp,
+                                    long len);
+
+// i2d_DSA_SIG marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or not,
+// or a negative value on error.
+//
+// Use |DSA_SIG_marshal| instead.
+OPENSSL_EXPORT int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp);
+
+// d2i_DSAPublicKey parses an ASN.1, DER-encoded, DSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*ou| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_public_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPublicKey marshals a public key from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_public_key| instead.
+OPENSSL_EXPORT int i2d_DSAPublicKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAPrivateKey parses an ASN.1, DER-encoded, DSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_private_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPrivateKey marshals a private key from |in| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_DSAPrivateKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAparams parses ASN.1, DER-encoded, DSA parameters from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_parameters| instead.
+OPENSSL_EXPORT DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAparams marshals DSA parameters from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DSAparams(const DSA *in, uint8_t **outp);
+
+// DSA_generate_parameters is a deprecated version of
+// |DSA_generate_parameters_ex| that creates and returns a |DSA*|. Don't use
+// it.
+OPENSSL_EXPORT DSA *DSA_generate_parameters(int bits, unsigned char *seed,
+                                            int seed_len, int *counter_ret,
+                                            unsigned long *h_ret,
+                                            void (*callback)(int, int, void *),
+                                            void *cb_arg);
+
+
+struct dsa_st {
+  long version;
+  BIGNUM *p;
+  BIGNUM *q;  // == 20
+  BIGNUM *g;
+
+  BIGNUM *pub_key;   // y public key
+  BIGNUM *priv_key;  // x private key
+
+  int flags;
+  // Normally used to cache montgomery values
+  CRYPTO_MUTEX method_mont_lock;
+  BN_MONT_CTX *method_mont_p;
+  BN_MONT_CTX *method_mont_q;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DSA, DSA_free)
+BORINGSSL_MAKE_UP_REF(DSA, DSA_up_ref)
+BORINGSSL_MAKE_DELETER(DSA_SIG, DSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DSA_R_BAD_Q_VALUE 100
+#define DSA_R_MISSING_PARAMETERS 101
+#define DSA_R_MODULUS_TOO_LARGE 102
+#define DSA_R_NEED_NEW_SETUP_VALUES 103
+#define DSA_R_BAD_VERSION 104
+#define DSA_R_DECODE_ERROR 105
+#define DSA_R_ENCODE_ERROR 106
+#define DSA_R_INVALID_PARAMETERS 107
+
+#endif  // OPENSSL_HEADER_DSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.grpc_back
new file mode 100644
index 0000000..8e3b9b3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dsa.h.grpc_back	
@@ -0,0 +1,441 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#ifndef OPENSSL_HEADER_DSA_H
+#define OPENSSL_HEADER_DSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// DSA contains functions for signing and verifying with the Digital Signature
+// Algorithm.
+//
+// This module is deprecated and retained for legacy reasons only. It is not
+// considered a priority for performance or hardening work. Do not use it in
+// new code. Use Ed25519, ECDSA with P-256, or RSA instead.
+
+
+// Allocation and destruction.
+
+// DSA_new returns a new, empty DSA object or NULL on error.
+OPENSSL_EXPORT DSA *DSA_new(void);
+
+// DSA_free decrements the reference count of |dsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void DSA_free(DSA *dsa);
+
+// DSA_up_ref increments the reference count of |dsa| and returns one.
+OPENSSL_EXPORT int DSA_up_ref(DSA *dsa);
+
+
+// Properties.
+
+// DSA_get0_key sets |*out_pub_key| and |*out_priv_key|, if non-NULL, to |dsa|'s
+// public and private key, respectively. If |dsa| is a public key, the private
+// key will be set to NULL.
+OPENSSL_EXPORT void DSA_get0_key(const DSA *dsa, const BIGNUM **out_pub_key,
+                                 const BIGNUM **out_priv_key);
+
+// DSA_get0_pqg sets |*out_p|, |*out_q|, and |*out_g|, if non-NULL, to |dsa|'s
+// p, q, and g parameters, respectively.
+OPENSSL_EXPORT void DSA_get0_pqg(const DSA *dsa, const BIGNUM **out_p,
+                                 const BIGNUM **out_q, const BIGNUM **out_g);
+
+// DSA_set0_key sets |dsa|'s public and private key to |pub_key| and |priv_key|,
+// respectively, if non-NULL. On success, it takes ownership of each argument
+// and returns one. Otherwise, it returns zero.
+//
+// |priv_key| may be NULL, but |pub_key| must either be non-NULL or already
+// configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_key(DSA *dsa, BIGNUM *pub_key, BIGNUM *priv_key);
+
+// DSA_set0_pqg sets |dsa|'s parameters to |p|, |q|, and |g|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |dsa|.
+OPENSSL_EXPORT int DSA_set0_pqg(DSA *dsa, BIGNUM *p, BIGNUM *q, BIGNUM *g);
+
+
+// Parameter generation.
+
+// DSA_generate_parameters_ex generates a set of DSA parameters by following
+// the procedure given in FIPS 186-4, appendix A.
+// (http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf)
+//
+// The larger prime will have a length of |bits| (e.g. 2048). The |seed| value
+// allows others to generate and verify the same parameters and should be
+// random input which is kept for reference. If |out_counter| or |out_h| are
+// not NULL then the counter and h value used in the generation are written to
+// them.
+//
+// The |cb| argument is passed to |BN_generate_prime_ex| and is thus called
+// during the generation process in order to indicate progress. See the
+// comments for that function for details. In addition to the calls made by
+// |BN_generate_prime_ex|, |DSA_generate_parameters_ex| will call it with
+// |event| equal to 2 and 3 at different stages of the process.
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int DSA_generate_parameters_ex(DSA *dsa, unsigned bits,
+                                              const uint8_t *seed,
+                                              size_t seed_len, int *out_counter,
+                                              unsigned long *out_h,
+                                              BN_GENCB *cb);
+
+// DSAparams_dup returns a freshly allocated |DSA| that contains a copy of the
+// parameters from |dsa|. It returns NULL on error.
+OPENSSL_EXPORT DSA *DSAparams_dup(const DSA *dsa);
+
+
+// Key generation.
+
+// DSA_generate_key generates a public/private key pair in |dsa|, which must
+// already have parameters setup. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int DSA_generate_key(DSA *dsa);
+
+
+// Signatures.
+
+// DSA_SIG_st (aka |DSA_SIG|) contains a DSA signature as a pair of integers.
+struct DSA_SIG_st {
+  BIGNUM *r, *s;
+};
+
+// DSA_SIG_new returns a freshly allocated, DIG_SIG structure or NULL on error.
+// Both |r| and |s| in the signature will be NULL.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_new(void);
+
+// DSA_SIG_free frees the contents of |sig| and then frees |sig| itself.
+OPENSSL_EXPORT void DSA_SIG_free(DSA_SIG *sig);
+
+// DSA_do_sign returns a signature of the hash in |digest| by the key in |dsa|
+// and returns an allocated, DSA_SIG structure, or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len,
+                                    const DSA *dsa);
+
+// DSA_do_verify verifies that |sig| is a valid signature, by the public key in
+// |dsa|, of the hash in |digest|. It returns one if so, zero if invalid and -1
+// on error.
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                 DSA_SIG *sig, const DSA *dsa);
+
+// DSA_do_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid signature, by the public key in |dsa| of the hash in |digest|
+// and, if so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                                          size_t digest_len, DSA_SIG *sig,
+                                          const DSA *dsa);
+
+
+// ASN.1 signatures.
+//
+// These functions also perform DSA signature operations, but deal with ASN.1
+// encoded signatures as opposed to raw |BIGNUM|s. If you don't know what
+// encoding a DSA signature is in, it's probably ASN.1.
+
+// DSA_sign signs |digest| with the key in |dsa| and writes the resulting
+// signature, in ASN.1 form, to |out_sig| and the length of the signature to
+// |*out_siglen|. There must be, at least, |DSA_size(dsa)| bytes of space in
+// |out_sig|. It returns one on success and zero otherwise.
+//
+// (The |type| argument is ignored.)
+OPENSSL_EXPORT int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+                            uint8_t *out_sig, unsigned int *out_siglen,
+                            const DSA *dsa);
+
+// DSA_verify verifies that |sig| is a valid, ASN.1 signature, by the public
+// key in |dsa|, of the hash in |digest|. It returns one if so, zero if invalid
+// and -1 on error.
+//
+// (The |type| argument is ignored.)
+//
+// WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+// for valid. However, this is dangerously different to the usual OpenSSL
+// convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+// Because of this, |DSA_check_signature| is a safer version of this.
+//
+// TODO(fork): deprecate.
+OPENSSL_EXPORT int DSA_verify(int type, const uint8_t *digest,
+                              size_t digest_len, const uint8_t *sig,
+                              size_t sig_len, const DSA *dsa);
+
+// DSA_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+// is a valid, ASN.1 signature, by the public key in |dsa|, of the hash in
+// |digest|. If so, it sets |*out_valid| to one.
+//
+// It returns one if it was able to verify the signature as valid or invalid,
+// and zero on error.
+OPENSSL_EXPORT int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                                       size_t digest_len, const uint8_t *sig,
+                                       size_t sig_len, const DSA *dsa);
+
+// DSA_size returns the size, in bytes, of an ASN.1 encoded, DSA signature
+// generated by |dsa|. Parameters must already have been setup in |dsa|.
+OPENSSL_EXPORT int DSA_size(const DSA *dsa);
+
+
+// ASN.1 encoding.
+
+// DSA_SIG_parse parses a DER-encoded DSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA_SIG| or NULL on error.
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_parse(CBS *cbs);
+
+// DSA_SIG_marshal marshals |sig| as a DER-encoded DSA-Sig-Value and appends the
+// result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int DSA_SIG_marshal(CBB *cbb, const DSA_SIG *sig);
+
+// DSA_parse_public_key parses a DER-encoded DSA public key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_public_key(CBS *cbs);
+
+// DSA_marshal_public_key marshals |dsa| as a DER-encoded DSA public key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_public_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_private_key parses a DER-encoded DSA private key from |cbs| and
+// advances |cbs|. It returns a newly-allocated |DSA| or NULL on error.
+OPENSSL_EXPORT DSA *DSA_parse_private_key(CBS *cbs);
+
+// DSA_marshal_private_key marshals |dsa| as a DER-encoded DSA private key and
+// appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int DSA_marshal_private_key(CBB *cbb, const DSA *dsa);
+
+// DSA_parse_parameters parses a DER-encoded Dss-Parms structure (RFC 3279)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |DSA| or NULL on
+// error.
+OPENSSL_EXPORT DSA *DSA_parse_parameters(CBS *cbs);
+
+// DSA_marshal_parameters marshals |dsa| as a DER-encoded Dss-Parms structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int DSA_marshal_parameters(CBB *cbb, const DSA *dsa);
+
+
+// Conversion.
+
+// DSA_dup_DH returns a |DH| constructed from the parameters of |dsa|. This is
+// sometimes needed when Diffie-Hellman parameters are stored in the form of
+// DSA parameters. It returns an allocated |DH| on success or NULL on error.
+OPENSSL_EXPORT DH *DSA_dup_DH(const DSA *dsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int DSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DSA_set_ex_data(DSA *dsa, int idx, void *arg);
+OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *dsa, int idx);
+
+
+// Deprecated functions.
+
+// d2i_DSA_SIG parses an ASN.1, DER-encoded, DSA signature from |len| bytes at
+// |*inp|. If |out_sig| is not NULL then, on exit, a pointer to the result is
+// in |*out_sig|. Note that, even if |*out_sig| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |DSA_SIG| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// Use |DSA_SIG_parse| instead.
+OPENSSL_EXPORT DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp,
+                                    long len);
+
+// i2d_DSA_SIG marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+// then the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or not,
+// or a negative value on error.
+//
+// Use |DSA_SIG_marshal| instead.
+OPENSSL_EXPORT int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp);
+
+// d2i_DSAPublicKey parses an ASN.1, DER-encoded, DSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*ou| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_public_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPublicKey marshals a public key from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_public_key| instead.
+OPENSSL_EXPORT int i2d_DSAPublicKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAPrivateKey parses an ASN.1, DER-encoded, DSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it will
+// not be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_private_key| instead.
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAPrivateKey marshals a private key from |in| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_DSAPrivateKey(const DSA *in, uint8_t **outp);
+
+// d2i_DSAparams parses ASN.1, DER-encoded, DSA parameters from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |DSA| is allocated and the previous one is
+// freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// Use |DSA_parse_parameters| instead.
+OPENSSL_EXPORT DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len);
+
+// i2d_DSAparams marshals DSA parameters from |in| to an ASN.1, DER structure.
+// If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+// advanced just past the output. It returns the number of bytes in the result,
+// whether written or not, or a negative value on error.
+//
+// Use |DSA_marshal_parameters| instead.
+OPENSSL_EXPORT int i2d_DSAparams(const DSA *in, uint8_t **outp);
+
+// DSA_generate_parameters is a deprecated version of
+// |DSA_generate_parameters_ex| that creates and returns a |DSA*|. Don't use
+// it.
+OPENSSL_EXPORT DSA *DSA_generate_parameters(int bits, unsigned char *seed,
+                                            int seed_len, int *counter_ret,
+                                            unsigned long *h_ret,
+                                            void (*callback)(int, int, void *),
+                                            void *cb_arg);
+
+
+struct dsa_st {
+  long version;
+  BIGNUM *p;
+  BIGNUM *q;  // == 20
+  BIGNUM *g;
+
+  BIGNUM *pub_key;   // y public key
+  BIGNUM *priv_key;  // x private key
+
+  int flags;
+  // Normally used to cache montgomery values
+  CRYPTO_MUTEX method_mont_lock;
+  BN_MONT_CTX *method_mont_p;
+  BN_MONT_CTX *method_mont_q;
+  CRYPTO_refcount_t references;
+  CRYPTO_EX_DATA ex_data;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(DSA, DSA_free)
+BORINGSSL_MAKE_UP_REF(DSA, DSA_up_ref)
+BORINGSSL_MAKE_DELETER(DSA_SIG, DSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define DSA_R_BAD_Q_VALUE 100
+#define DSA_R_MISSING_PARAMETERS 101
+#define DSA_R_MODULUS_TOO_LARGE 102
+#define DSA_R_NEED_NEW_SETUP_VALUES 103
+#define DSA_R_BAD_VERSION 104
+#define DSA_R_DECODE_ERROR 105
+#define DSA_R_ENCODE_ERROR 106
+#define DSA_R_INVALID_PARAMETERS 107
+
+#endif  // OPENSSL_HEADER_DSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h
new file mode 100644
index 0000000..38ca801
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.back
new file mode 100644
index 0000000..38ca801
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.grpc_back
new file mode 100644
index 0000000..38ca801
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/dtls1.h.grpc_back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h
new file mode 100644
index 0000000..4095f63
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include <openssl_grpc/base.h>
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.back
new file mode 100644
index 0000000..f2d8bac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include <openssl/base.h>
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.grpc_back
new file mode 100644
index 0000000..f2d8bac
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/e_os2.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include <openssl/base.h>
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h
new file mode 100644
index 0000000..6944b77
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h	
@@ -0,0 +1,424 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_H
+#define OPENSSL_HEADER_EC_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Low-level operations on elliptic curves.
+
+
+// point_conversion_form_t enumerates forms, as defined in X9.62 (ECDSA), for
+// the encoding of a elliptic curve point (x,y)
+typedef enum {
+  // POINT_CONVERSION_COMPRESSED indicates that the point is encoded as z||x,
+  // where the octet z specifies which solution of the quadratic equation y
+  // is.
+  POINT_CONVERSION_COMPRESSED = 2,
+
+  // POINT_CONVERSION_UNCOMPRESSED indicates that the point is encoded as
+  // z||x||y, where z is the octet 0x04.
+  POINT_CONVERSION_UNCOMPRESSED = 4,
+
+  // POINT_CONVERSION_HYBRID indicates that the point is encoded as z||x||y,
+  // where z specifies which solution of the quadratic equation y is. This is
+  // not supported by the code and has never been observed in use.
+  //
+  // TODO(agl): remove once node.js no longer references this.
+  POINT_CONVERSION_HYBRID = 6,
+} point_conversion_form_t;
+
+
+// Elliptic curve groups.
+
+// EC_GROUP_new_by_curve_name returns a fresh EC_GROUP object for the elliptic
+// curve specified by |nid|, or NULL on unsupported NID or allocation failure.
+//
+// The supported NIDs are:
+//   NID_secp224r1 (P-224),
+//   NID_X9_62_prime256v1 (P-256),
+//   NID_secp384r1 (P-384),
+//   NID_secp521r1 (P-521)
+//
+// If in doubt, use |NID_X9_62_prime256v1|, or see the curve25519.h header for
+// more modern primitives.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
+
+// EC_GROUP_free releases a reference to |group|.
+OPENSSL_EXPORT void EC_GROUP_free(EC_GROUP *group);
+
+// EC_GROUP_dup takes a reference to |a| and returns it.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_dup(const EC_GROUP *a);
+
+// EC_GROUP_cmp returns zero if |a| and |b| are the same group and non-zero
+// otherwise.
+OPENSSL_EXPORT int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b,
+                                BN_CTX *ignored);
+
+// EC_GROUP_get0_generator returns a pointer to the internal |EC_POINT| object
+// in |group| that specifies the generator for the group.
+OPENSSL_EXPORT const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
+
+// EC_GROUP_get0_order returns a pointer to the internal |BIGNUM| object in
+// |group| that specifies the order of the group.
+OPENSSL_EXPORT const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
+
+// EC_GROUP_order_bits returns the number of bits of the order of |group|.
+OPENSSL_EXPORT int EC_GROUP_order_bits(const EC_GROUP *group);
+
+// EC_GROUP_get_cofactor sets |*cofactor| to the cofactor of |group| using
+// |ctx|, if it's not NULL. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_GROUP_get_cofactor(const EC_GROUP *group,
+                                         BIGNUM *cofactor, BN_CTX *ctx);
+
+// EC_GROUP_get_curve_GFp gets various parameters about a group. It sets
+// |*out_p| to the order of the coordinate field and |*out_a| and |*out_b| to
+// the parameters of the curve when expressed as y² = x³ + ax + b. Any of the
+// output parameters can be NULL. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *out_p,
+                                          BIGNUM *out_a, BIGNUM *out_b,
+                                          BN_CTX *ctx);
+
+// EC_GROUP_get_curve_name returns a NID that identifies |group|.
+OPENSSL_EXPORT int EC_GROUP_get_curve_name(const EC_GROUP *group);
+
+// EC_GROUP_get_degree returns the number of bits needed to represent an
+// element of the field underlying |group|.
+OPENSSL_EXPORT unsigned EC_GROUP_get_degree(const EC_GROUP *group);
+
+// EC_curve_nid2nist returns the NIST name of the elliptic curve specified by
+// |nid|, or NULL if |nid| is not a NIST curve. For example, it returns "P-256"
+// for |NID_X9_62_prime256v1|.
+OPENSSL_EXPORT const char *EC_curve_nid2nist(int nid);
+
+// EC_curve_nist2nid returns the NID of the elliptic curve specified by the NIST
+// name |name|, or |NID_undef| if |name| is not a recognized name. For example,
+// it returns |NID_X9_62_prime256v1| for "P-256".
+OPENSSL_EXPORT int EC_curve_nist2nid(const char *name);
+
+
+// Points on elliptic curves.
+
+// EC_POINT_new returns a fresh |EC_POINT| object in the given group, or NULL
+// on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_new(const EC_GROUP *group);
+
+// EC_POINT_free frees |point| and the data that it points to.
+OPENSSL_EXPORT void EC_POINT_free(EC_POINT *point);
+
+// EC_POINT_copy sets |*dest| equal to |*src|. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src);
+
+// EC_POINT_dup returns a fresh |EC_POINT| that contains the same values as
+// |src|, or NULL on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_dup(const EC_POINT *src,
+                                      const EC_GROUP *group);
+
+// EC_POINT_set_to_infinity sets |point| to be the "point at infinity" for the
+// given group.
+OPENSSL_EXPORT int EC_POINT_set_to_infinity(const EC_GROUP *group,
+                                            EC_POINT *point);
+
+// EC_POINT_is_at_infinity returns one iff |point| is the point at infinity and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_is_at_infinity(const EC_GROUP *group,
+                                           const EC_POINT *point);
+
+// EC_POINT_is_on_curve returns one if |point| is an element of |group| and
+// and zero otherwise or when an error occurs. This is different from OpenSSL,
+// which returns -1 on error. If |ctx| is non-NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_is_on_curve(const EC_GROUP *group,
+                                        const EC_POINT *point, BN_CTX *ctx);
+
+// EC_POINT_cmp returns zero if |a| is equal to |b|, greater than zero if
+// not equal and -1 on error. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a,
+                                const EC_POINT *b, BN_CTX *ctx);
+
+
+// Point conversion.
+
+// EC_POINT_get_affine_coordinates_GFp sets |x| and |y| to the affine value of
+// |point| using |ctx|, if it's not NULL. It returns one on success and zero
+// otherwise.
+//
+// Either |x| or |y| may be NULL to skip computing that coordinate. This is
+// slightly faster in the common case where only the x-coordinate is needed.
+OPENSSL_EXPORT int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       const EC_POINT *point,
+                                                       BIGNUM *x, BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_set_affine_coordinates_GFp sets the value of |point| to be
+// (|x|, |y|). The |ctx| argument may be used if not NULL. It returns one
+// on success or zero on error. It's considered an error if the point is not on
+// the curve.
+//
+// Note that the corresponding function in OpenSSL versions prior to 1.0.2s does
+// not check if the point is on the curve. This is a security-critical check, so
+// code additionally supporting OpenSSL should repeat the check with
+// |EC_POINT_is_on_curve| or check for older OpenSSL versions with
+// |OPENSSL_VERSION_NUMBER|.
+OPENSSL_EXPORT int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       EC_POINT *point,
+                                                       const BIGNUM *x,
+                                                       const BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_point2oct serialises |point| into the X9.62 form given by |form|
+// into, at most, |len| bytes at |buf|. It returns the number of bytes written
+// or zero on error if |buf| is non-NULL, else the number of bytes needed. The
+// |ctx| argument may be used if not NULL.
+OPENSSL_EXPORT size_t EC_POINT_point2oct(const EC_GROUP *group,
+                                         const EC_POINT *point,
+                                         point_conversion_form_t form,
+                                         uint8_t *buf, size_t len, BN_CTX *ctx);
+
+// EC_POINT_point2cbb behaves like |EC_POINT_point2oct| but appends the
+// serialised point to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EC_POINT_point2cbb(CBB *out, const EC_GROUP *group,
+                                      const EC_POINT *point,
+                                      point_conversion_form_t form,
+                                      BN_CTX *ctx);
+
+// EC_POINT_oct2point sets |point| from |len| bytes of X9.62 format
+// serialisation in |buf|. It returns one on success and zero on error. The
+// |ctx| argument may be used if not NULL. It's considered an error if |buf|
+// does not represent a point on the curve.
+OPENSSL_EXPORT int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
+                                      const uint8_t *buf, size_t len,
+                                      BN_CTX *ctx);
+
+// EC_POINT_set_compressed_coordinates_GFp sets |point| to equal the point with
+// the given |x| coordinate and the y coordinate specified by |y_bit| (see
+// X9.62). It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_POINT_set_compressed_coordinates_GFp(
+    const EC_GROUP *group, EC_POINT *point, const BIGNUM *x, int y_bit,
+    BN_CTX *ctx);
+
+
+// Group operations.
+
+// EC_POINT_add sets |r| equal to |a| plus |b|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_add(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, const EC_POINT *b,
+                                BN_CTX *ctx);
+
+// EC_POINT_dbl sets |r| equal to |a| plus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, BN_CTX *ctx);
+
+// EC_POINT_invert sets |a| equal to minus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a,
+                                   BN_CTX *ctx);
+
+// EC_POINT_mul sets r = generator*n + q*m. It returns one on success and zero
+// otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r,
+                                const BIGNUM *n, const EC_POINT *q,
+                                const BIGNUM *m, BN_CTX *ctx);
+
+
+// Deprecated functions.
+
+// EC_GROUP_new_curve_GFp creates a new, arbitrary elliptic curve group based
+// on the equation y² = x³ + a·x + b. It returns the new group or NULL on
+// error.
+//
+// This new group has no generator. It is an error to use a generator-less group
+// with any functions except for |EC_GROUP_free|, |EC_POINT_new|,
+// |EC_POINT_set_affine_coordinates_GFp|, and |EC_GROUP_set_generator|.
+//
+// |EC_GROUP|s returned by this function will always compare as unequal via
+// |EC_GROUP_cmp| (even to themselves). |EC_GROUP_get_curve_name| will always
+// return |NID_undef|.
+//
+// Avoid using arbitrary curves and use |EC_GROUP_new_by_curve_name| instead.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p,
+                                                const BIGNUM *a,
+                                                const BIGNUM *b, BN_CTX *ctx);
+
+// EC_GROUP_set_generator sets the generator for |group| to |generator|, which
+// must have the given order and cofactor. It may only be used with |EC_GROUP|
+// objects returned by |EC_GROUP_new_curve_GFp| and may only be used once on
+// each group. |generator| must have been created using |group|.
+OPENSSL_EXPORT int EC_GROUP_set_generator(EC_GROUP *group,
+                                          const EC_POINT *generator,
+                                          const BIGNUM *order,
+                                          const BIGNUM *cofactor);
+
+// EC_GROUP_get_order sets |*order| to the order of |group|, if it's not
+// NULL. It returns one on success and zero otherwise. |ctx| is ignored. Use
+// |EC_GROUP_get0_order| instead.
+OPENSSL_EXPORT int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order,
+                                      BN_CTX *ctx);
+
+// EC_GROUP_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
+
+#define OPENSSL_EC_NAMED_CURVE 0
+#define OPENSSL_EC_EXPLICIT_CURVE 1
+
+typedef struct ec_method_st EC_METHOD;
+
+// EC_GROUP_method_of returns a dummy non-NULL pointer.
+OPENSSL_EXPORT const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
+
+// EC_METHOD_get_field_type returns NID_X9_62_prime_field.
+OPENSSL_EXPORT int EC_METHOD_get_field_type(const EC_METHOD *meth);
+
+// EC_GROUP_set_point_conversion_form aborts the process if |form| is not
+// |POINT_CONVERSION_UNCOMPRESSED| and otherwise does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_point_conversion_form(
+    EC_GROUP *group, point_conversion_form_t form);
+
+// EC_builtin_curve describes a supported elliptic curve.
+typedef struct {
+  int nid;
+  const char *comment;
+} EC_builtin_curve;
+
+// EC_get_builtin_curves writes at most |max_num_curves| elements to
+// |out_curves| and returns the total number that it would have written, had
+// |max_num_curves| been large enough.
+//
+// The |EC_builtin_curve| items describe the supported elliptic curves.
+OPENSSL_EXPORT size_t EC_get_builtin_curves(EC_builtin_curve *out_curves,
+                                            size_t max_num_curves);
+
+// EC_POINT_clear_free calls |EC_POINT_free|.
+OPENSSL_EXPORT void EC_POINT_clear_free(EC_POINT *point);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+// Old code expects to get EC_KEY from ec.h.
+#include <openssl_grpc/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_POINT, EC_POINT_free)
+BORINGSSL_MAKE_DELETER(EC_GROUP, EC_GROUP_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EC_R_BUFFER_TOO_SMALL 100
+#define EC_R_COORDINATES_OUT_OF_RANGE 101
+#define EC_R_D2I_ECPKPARAMETERS_FAILURE 102
+#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 103
+#define EC_R_GROUP2PKPARAMETERS_FAILURE 104
+#define EC_R_I2D_ECPKPARAMETERS_FAILURE 105
+#define EC_R_INCOMPATIBLE_OBJECTS 106
+#define EC_R_INVALID_COMPRESSED_POINT 107
+#define EC_R_INVALID_COMPRESSION_BIT 108
+#define EC_R_INVALID_ENCODING 109
+#define EC_R_INVALID_FIELD 110
+#define EC_R_INVALID_FORM 111
+#define EC_R_INVALID_GROUP_ORDER 112
+#define EC_R_INVALID_PRIVATE_KEY 113
+#define EC_R_MISSING_PARAMETERS 114
+#define EC_R_MISSING_PRIVATE_KEY 115
+#define EC_R_NON_NAMED_CURVE 116
+#define EC_R_NOT_INITIALIZED 117
+#define EC_R_PKPARAMETERS2GROUP_FAILURE 118
+#define EC_R_POINT_AT_INFINITY 119
+#define EC_R_POINT_IS_NOT_ON_CURVE 120
+#define EC_R_SLOT_FULL 121
+#define EC_R_UNDEFINED_GENERATOR 122
+#define EC_R_UNKNOWN_GROUP 123
+#define EC_R_UNKNOWN_ORDER 124
+#define EC_R_WRONG_ORDER 125
+#define EC_R_BIGNUM_OUT_OF_RANGE 126
+#define EC_R_WRONG_CURVE_PARAMETERS 127
+#define EC_R_DECODE_ERROR 128
+#define EC_R_ENCODE_ERROR 129
+#define EC_R_GROUP_MISMATCH 130
+#define EC_R_INVALID_COFACTOR 131
+#define EC_R_PUBLIC_KEY_VALIDATION_FAILED 132
+#define EC_R_INVALID_SCALAR 133
+
+#endif  // OPENSSL_HEADER_EC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.back
new file mode 100644
index 0000000..cfad93e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.back	
@@ -0,0 +1,424 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_H
+#define OPENSSL_HEADER_EC_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Low-level operations on elliptic curves.
+
+
+// point_conversion_form_t enumerates forms, as defined in X9.62 (ECDSA), for
+// the encoding of a elliptic curve point (x,y)
+typedef enum {
+  // POINT_CONVERSION_COMPRESSED indicates that the point is encoded as z||x,
+  // where the octet z specifies which solution of the quadratic equation y
+  // is.
+  POINT_CONVERSION_COMPRESSED = 2,
+
+  // POINT_CONVERSION_UNCOMPRESSED indicates that the point is encoded as
+  // z||x||y, where z is the octet 0x04.
+  POINT_CONVERSION_UNCOMPRESSED = 4,
+
+  // POINT_CONVERSION_HYBRID indicates that the point is encoded as z||x||y,
+  // where z specifies which solution of the quadratic equation y is. This is
+  // not supported by the code and has never been observed in use.
+  //
+  // TODO(agl): remove once node.js no longer references this.
+  POINT_CONVERSION_HYBRID = 6,
+} point_conversion_form_t;
+
+
+// Elliptic curve groups.
+
+// EC_GROUP_new_by_curve_name returns a fresh EC_GROUP object for the elliptic
+// curve specified by |nid|, or NULL on unsupported NID or allocation failure.
+//
+// The supported NIDs are:
+//   NID_secp224r1 (P-224),
+//   NID_X9_62_prime256v1 (P-256),
+//   NID_secp384r1 (P-384),
+//   NID_secp521r1 (P-521)
+//
+// If in doubt, use |NID_X9_62_prime256v1|, or see the curve25519.h header for
+// more modern primitives.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
+
+// EC_GROUP_free releases a reference to |group|.
+OPENSSL_EXPORT void EC_GROUP_free(EC_GROUP *group);
+
+// EC_GROUP_dup takes a reference to |a| and returns it.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_dup(const EC_GROUP *a);
+
+// EC_GROUP_cmp returns zero if |a| and |b| are the same group and non-zero
+// otherwise.
+OPENSSL_EXPORT int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b,
+                                BN_CTX *ignored);
+
+// EC_GROUP_get0_generator returns a pointer to the internal |EC_POINT| object
+// in |group| that specifies the generator for the group.
+OPENSSL_EXPORT const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
+
+// EC_GROUP_get0_order returns a pointer to the internal |BIGNUM| object in
+// |group| that specifies the order of the group.
+OPENSSL_EXPORT const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
+
+// EC_GROUP_order_bits returns the number of bits of the order of |group|.
+OPENSSL_EXPORT int EC_GROUP_order_bits(const EC_GROUP *group);
+
+// EC_GROUP_get_cofactor sets |*cofactor| to the cofactor of |group| using
+// |ctx|, if it's not NULL. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_GROUP_get_cofactor(const EC_GROUP *group,
+                                         BIGNUM *cofactor, BN_CTX *ctx);
+
+// EC_GROUP_get_curve_GFp gets various parameters about a group. It sets
+// |*out_p| to the order of the coordinate field and |*out_a| and |*out_b| to
+// the parameters of the curve when expressed as y² = x³ + ax + b. Any of the
+// output parameters can be NULL. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *out_p,
+                                          BIGNUM *out_a, BIGNUM *out_b,
+                                          BN_CTX *ctx);
+
+// EC_GROUP_get_curve_name returns a NID that identifies |group|.
+OPENSSL_EXPORT int EC_GROUP_get_curve_name(const EC_GROUP *group);
+
+// EC_GROUP_get_degree returns the number of bits needed to represent an
+// element of the field underlying |group|.
+OPENSSL_EXPORT unsigned EC_GROUP_get_degree(const EC_GROUP *group);
+
+// EC_curve_nid2nist returns the NIST name of the elliptic curve specified by
+// |nid|, or NULL if |nid| is not a NIST curve. For example, it returns "P-256"
+// for |NID_X9_62_prime256v1|.
+OPENSSL_EXPORT const char *EC_curve_nid2nist(int nid);
+
+// EC_curve_nist2nid returns the NID of the elliptic curve specified by the NIST
+// name |name|, or |NID_undef| if |name| is not a recognized name. For example,
+// it returns |NID_X9_62_prime256v1| for "P-256".
+OPENSSL_EXPORT int EC_curve_nist2nid(const char *name);
+
+
+// Points on elliptic curves.
+
+// EC_POINT_new returns a fresh |EC_POINT| object in the given group, or NULL
+// on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_new(const EC_GROUP *group);
+
+// EC_POINT_free frees |point| and the data that it points to.
+OPENSSL_EXPORT void EC_POINT_free(EC_POINT *point);
+
+// EC_POINT_copy sets |*dest| equal to |*src|. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src);
+
+// EC_POINT_dup returns a fresh |EC_POINT| that contains the same values as
+// |src|, or NULL on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_dup(const EC_POINT *src,
+                                      const EC_GROUP *group);
+
+// EC_POINT_set_to_infinity sets |point| to be the "point at infinity" for the
+// given group.
+OPENSSL_EXPORT int EC_POINT_set_to_infinity(const EC_GROUP *group,
+                                            EC_POINT *point);
+
+// EC_POINT_is_at_infinity returns one iff |point| is the point at infinity and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_is_at_infinity(const EC_GROUP *group,
+                                           const EC_POINT *point);
+
+// EC_POINT_is_on_curve returns one if |point| is an element of |group| and
+// and zero otherwise or when an error occurs. This is different from OpenSSL,
+// which returns -1 on error. If |ctx| is non-NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_is_on_curve(const EC_GROUP *group,
+                                        const EC_POINT *point, BN_CTX *ctx);
+
+// EC_POINT_cmp returns zero if |a| is equal to |b|, greater than zero if
+// not equal and -1 on error. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a,
+                                const EC_POINT *b, BN_CTX *ctx);
+
+
+// Point conversion.
+
+// EC_POINT_get_affine_coordinates_GFp sets |x| and |y| to the affine value of
+// |point| using |ctx|, if it's not NULL. It returns one on success and zero
+// otherwise.
+//
+// Either |x| or |y| may be NULL to skip computing that coordinate. This is
+// slightly faster in the common case where only the x-coordinate is needed.
+OPENSSL_EXPORT int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       const EC_POINT *point,
+                                                       BIGNUM *x, BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_set_affine_coordinates_GFp sets the value of |point| to be
+// (|x|, |y|). The |ctx| argument may be used if not NULL. It returns one
+// on success or zero on error. It's considered an error if the point is not on
+// the curve.
+//
+// Note that the corresponding function in OpenSSL versions prior to 1.0.2s does
+// not check if the point is on the curve. This is a security-critical check, so
+// code additionally supporting OpenSSL should repeat the check with
+// |EC_POINT_is_on_curve| or check for older OpenSSL versions with
+// |OPENSSL_VERSION_NUMBER|.
+OPENSSL_EXPORT int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       EC_POINT *point,
+                                                       const BIGNUM *x,
+                                                       const BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_point2oct serialises |point| into the X9.62 form given by |form|
+// into, at most, |len| bytes at |buf|. It returns the number of bytes written
+// or zero on error if |buf| is non-NULL, else the number of bytes needed. The
+// |ctx| argument may be used if not NULL.
+OPENSSL_EXPORT size_t EC_POINT_point2oct(const EC_GROUP *group,
+                                         const EC_POINT *point,
+                                         point_conversion_form_t form,
+                                         uint8_t *buf, size_t len, BN_CTX *ctx);
+
+// EC_POINT_point2cbb behaves like |EC_POINT_point2oct| but appends the
+// serialised point to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EC_POINT_point2cbb(CBB *out, const EC_GROUP *group,
+                                      const EC_POINT *point,
+                                      point_conversion_form_t form,
+                                      BN_CTX *ctx);
+
+// EC_POINT_oct2point sets |point| from |len| bytes of X9.62 format
+// serialisation in |buf|. It returns one on success and zero on error. The
+// |ctx| argument may be used if not NULL. It's considered an error if |buf|
+// does not represent a point on the curve.
+OPENSSL_EXPORT int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
+                                      const uint8_t *buf, size_t len,
+                                      BN_CTX *ctx);
+
+// EC_POINT_set_compressed_coordinates_GFp sets |point| to equal the point with
+// the given |x| coordinate and the y coordinate specified by |y_bit| (see
+// X9.62). It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_POINT_set_compressed_coordinates_GFp(
+    const EC_GROUP *group, EC_POINT *point, const BIGNUM *x, int y_bit,
+    BN_CTX *ctx);
+
+
+// Group operations.
+
+// EC_POINT_add sets |r| equal to |a| plus |b|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_add(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, const EC_POINT *b,
+                                BN_CTX *ctx);
+
+// EC_POINT_dbl sets |r| equal to |a| plus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, BN_CTX *ctx);
+
+// EC_POINT_invert sets |a| equal to minus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a,
+                                   BN_CTX *ctx);
+
+// EC_POINT_mul sets r = generator*n + q*m. It returns one on success and zero
+// otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r,
+                                const BIGNUM *n, const EC_POINT *q,
+                                const BIGNUM *m, BN_CTX *ctx);
+
+
+// Deprecated functions.
+
+// EC_GROUP_new_curve_GFp creates a new, arbitrary elliptic curve group based
+// on the equation y² = x³ + a·x + b. It returns the new group or NULL on
+// error.
+//
+// This new group has no generator. It is an error to use a generator-less group
+// with any functions except for |EC_GROUP_free|, |EC_POINT_new|,
+// |EC_POINT_set_affine_coordinates_GFp|, and |EC_GROUP_set_generator|.
+//
+// |EC_GROUP|s returned by this function will always compare as unequal via
+// |EC_GROUP_cmp| (even to themselves). |EC_GROUP_get_curve_name| will always
+// return |NID_undef|.
+//
+// Avoid using arbitrary curves and use |EC_GROUP_new_by_curve_name| instead.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p,
+                                                const BIGNUM *a,
+                                                const BIGNUM *b, BN_CTX *ctx);
+
+// EC_GROUP_set_generator sets the generator for |group| to |generator|, which
+// must have the given order and cofactor. It may only be used with |EC_GROUP|
+// objects returned by |EC_GROUP_new_curve_GFp| and may only be used once on
+// each group. |generator| must have been created using |group|.
+OPENSSL_EXPORT int EC_GROUP_set_generator(EC_GROUP *group,
+                                          const EC_POINT *generator,
+                                          const BIGNUM *order,
+                                          const BIGNUM *cofactor);
+
+// EC_GROUP_get_order sets |*order| to the order of |group|, if it's not
+// NULL. It returns one on success and zero otherwise. |ctx| is ignored. Use
+// |EC_GROUP_get0_order| instead.
+OPENSSL_EXPORT int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order,
+                                      BN_CTX *ctx);
+
+// EC_GROUP_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
+
+#define OPENSSL_EC_NAMED_CURVE 0
+#define OPENSSL_EC_EXPLICIT_CURVE 1
+
+typedef struct ec_method_st EC_METHOD;
+
+// EC_GROUP_method_of returns a dummy non-NULL pointer.
+OPENSSL_EXPORT const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
+
+// EC_METHOD_get_field_type returns NID_X9_62_prime_field.
+OPENSSL_EXPORT int EC_METHOD_get_field_type(const EC_METHOD *meth);
+
+// EC_GROUP_set_point_conversion_form aborts the process if |form| is not
+// |POINT_CONVERSION_UNCOMPRESSED| and otherwise does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_point_conversion_form(
+    EC_GROUP *group, point_conversion_form_t form);
+
+// EC_builtin_curve describes a supported elliptic curve.
+typedef struct {
+  int nid;
+  const char *comment;
+} EC_builtin_curve;
+
+// EC_get_builtin_curves writes at most |max_num_curves| elements to
+// |out_curves| and returns the total number that it would have written, had
+// |max_num_curves| been large enough.
+//
+// The |EC_builtin_curve| items describe the supported elliptic curves.
+OPENSSL_EXPORT size_t EC_get_builtin_curves(EC_builtin_curve *out_curves,
+                                            size_t max_num_curves);
+
+// EC_POINT_clear_free calls |EC_POINT_free|.
+OPENSSL_EXPORT void EC_POINT_clear_free(EC_POINT *point);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+// Old code expects to get EC_KEY from ec.h.
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_POINT, EC_POINT_free)
+BORINGSSL_MAKE_DELETER(EC_GROUP, EC_GROUP_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EC_R_BUFFER_TOO_SMALL 100
+#define EC_R_COORDINATES_OUT_OF_RANGE 101
+#define EC_R_D2I_ECPKPARAMETERS_FAILURE 102
+#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 103
+#define EC_R_GROUP2PKPARAMETERS_FAILURE 104
+#define EC_R_I2D_ECPKPARAMETERS_FAILURE 105
+#define EC_R_INCOMPATIBLE_OBJECTS 106
+#define EC_R_INVALID_COMPRESSED_POINT 107
+#define EC_R_INVALID_COMPRESSION_BIT 108
+#define EC_R_INVALID_ENCODING 109
+#define EC_R_INVALID_FIELD 110
+#define EC_R_INVALID_FORM 111
+#define EC_R_INVALID_GROUP_ORDER 112
+#define EC_R_INVALID_PRIVATE_KEY 113
+#define EC_R_MISSING_PARAMETERS 114
+#define EC_R_MISSING_PRIVATE_KEY 115
+#define EC_R_NON_NAMED_CURVE 116
+#define EC_R_NOT_INITIALIZED 117
+#define EC_R_PKPARAMETERS2GROUP_FAILURE 118
+#define EC_R_POINT_AT_INFINITY 119
+#define EC_R_POINT_IS_NOT_ON_CURVE 120
+#define EC_R_SLOT_FULL 121
+#define EC_R_UNDEFINED_GENERATOR 122
+#define EC_R_UNKNOWN_GROUP 123
+#define EC_R_UNKNOWN_ORDER 124
+#define EC_R_WRONG_ORDER 125
+#define EC_R_BIGNUM_OUT_OF_RANGE 126
+#define EC_R_WRONG_CURVE_PARAMETERS 127
+#define EC_R_DECODE_ERROR 128
+#define EC_R_ENCODE_ERROR 129
+#define EC_R_GROUP_MISMATCH 130
+#define EC_R_INVALID_COFACTOR 131
+#define EC_R_PUBLIC_KEY_VALIDATION_FAILED 132
+#define EC_R_INVALID_SCALAR 133
+
+#endif  // OPENSSL_HEADER_EC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.grpc_back
new file mode 100644
index 0000000..cfad93e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec.h.grpc_back	
@@ -0,0 +1,424 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_H
+#define OPENSSL_HEADER_EC_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Low-level operations on elliptic curves.
+
+
+// point_conversion_form_t enumerates forms, as defined in X9.62 (ECDSA), for
+// the encoding of a elliptic curve point (x,y)
+typedef enum {
+  // POINT_CONVERSION_COMPRESSED indicates that the point is encoded as z||x,
+  // where the octet z specifies which solution of the quadratic equation y
+  // is.
+  POINT_CONVERSION_COMPRESSED = 2,
+
+  // POINT_CONVERSION_UNCOMPRESSED indicates that the point is encoded as
+  // z||x||y, where z is the octet 0x04.
+  POINT_CONVERSION_UNCOMPRESSED = 4,
+
+  // POINT_CONVERSION_HYBRID indicates that the point is encoded as z||x||y,
+  // where z specifies which solution of the quadratic equation y is. This is
+  // not supported by the code and has never been observed in use.
+  //
+  // TODO(agl): remove once node.js no longer references this.
+  POINT_CONVERSION_HYBRID = 6,
+} point_conversion_form_t;
+
+
+// Elliptic curve groups.
+
+// EC_GROUP_new_by_curve_name returns a fresh EC_GROUP object for the elliptic
+// curve specified by |nid|, or NULL on unsupported NID or allocation failure.
+//
+// The supported NIDs are:
+//   NID_secp224r1 (P-224),
+//   NID_X9_62_prime256v1 (P-256),
+//   NID_secp384r1 (P-384),
+//   NID_secp521r1 (P-521)
+//
+// If in doubt, use |NID_X9_62_prime256v1|, or see the curve25519.h header for
+// more modern primitives.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
+
+// EC_GROUP_free releases a reference to |group|.
+OPENSSL_EXPORT void EC_GROUP_free(EC_GROUP *group);
+
+// EC_GROUP_dup takes a reference to |a| and returns it.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_dup(const EC_GROUP *a);
+
+// EC_GROUP_cmp returns zero if |a| and |b| are the same group and non-zero
+// otherwise.
+OPENSSL_EXPORT int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b,
+                                BN_CTX *ignored);
+
+// EC_GROUP_get0_generator returns a pointer to the internal |EC_POINT| object
+// in |group| that specifies the generator for the group.
+OPENSSL_EXPORT const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
+
+// EC_GROUP_get0_order returns a pointer to the internal |BIGNUM| object in
+// |group| that specifies the order of the group.
+OPENSSL_EXPORT const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
+
+// EC_GROUP_order_bits returns the number of bits of the order of |group|.
+OPENSSL_EXPORT int EC_GROUP_order_bits(const EC_GROUP *group);
+
+// EC_GROUP_get_cofactor sets |*cofactor| to the cofactor of |group| using
+// |ctx|, if it's not NULL. It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_GROUP_get_cofactor(const EC_GROUP *group,
+                                         BIGNUM *cofactor, BN_CTX *ctx);
+
+// EC_GROUP_get_curve_GFp gets various parameters about a group. It sets
+// |*out_p| to the order of the coordinate field and |*out_a| and |*out_b| to
+// the parameters of the curve when expressed as y² = x³ + ax + b. Any of the
+// output parameters can be NULL. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *out_p,
+                                          BIGNUM *out_a, BIGNUM *out_b,
+                                          BN_CTX *ctx);
+
+// EC_GROUP_get_curve_name returns a NID that identifies |group|.
+OPENSSL_EXPORT int EC_GROUP_get_curve_name(const EC_GROUP *group);
+
+// EC_GROUP_get_degree returns the number of bits needed to represent an
+// element of the field underlying |group|.
+OPENSSL_EXPORT unsigned EC_GROUP_get_degree(const EC_GROUP *group);
+
+// EC_curve_nid2nist returns the NIST name of the elliptic curve specified by
+// |nid|, or NULL if |nid| is not a NIST curve. For example, it returns "P-256"
+// for |NID_X9_62_prime256v1|.
+OPENSSL_EXPORT const char *EC_curve_nid2nist(int nid);
+
+// EC_curve_nist2nid returns the NID of the elliptic curve specified by the NIST
+// name |name|, or |NID_undef| if |name| is not a recognized name. For example,
+// it returns |NID_X9_62_prime256v1| for "P-256".
+OPENSSL_EXPORT int EC_curve_nist2nid(const char *name);
+
+
+// Points on elliptic curves.
+
+// EC_POINT_new returns a fresh |EC_POINT| object in the given group, or NULL
+// on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_new(const EC_GROUP *group);
+
+// EC_POINT_free frees |point| and the data that it points to.
+OPENSSL_EXPORT void EC_POINT_free(EC_POINT *point);
+
+// EC_POINT_copy sets |*dest| equal to |*src|. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src);
+
+// EC_POINT_dup returns a fresh |EC_POINT| that contains the same values as
+// |src|, or NULL on error.
+OPENSSL_EXPORT EC_POINT *EC_POINT_dup(const EC_POINT *src,
+                                      const EC_GROUP *group);
+
+// EC_POINT_set_to_infinity sets |point| to be the "point at infinity" for the
+// given group.
+OPENSSL_EXPORT int EC_POINT_set_to_infinity(const EC_GROUP *group,
+                                            EC_POINT *point);
+
+// EC_POINT_is_at_infinity returns one iff |point| is the point at infinity and
+// zero otherwise.
+OPENSSL_EXPORT int EC_POINT_is_at_infinity(const EC_GROUP *group,
+                                           const EC_POINT *point);
+
+// EC_POINT_is_on_curve returns one if |point| is an element of |group| and
+// and zero otherwise or when an error occurs. This is different from OpenSSL,
+// which returns -1 on error. If |ctx| is non-NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_is_on_curve(const EC_GROUP *group,
+                                        const EC_POINT *point, BN_CTX *ctx);
+
+// EC_POINT_cmp returns zero if |a| is equal to |b|, greater than zero if
+// not equal and -1 on error. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a,
+                                const EC_POINT *b, BN_CTX *ctx);
+
+
+// Point conversion.
+
+// EC_POINT_get_affine_coordinates_GFp sets |x| and |y| to the affine value of
+// |point| using |ctx|, if it's not NULL. It returns one on success and zero
+// otherwise.
+//
+// Either |x| or |y| may be NULL to skip computing that coordinate. This is
+// slightly faster in the common case where only the x-coordinate is needed.
+OPENSSL_EXPORT int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       const EC_POINT *point,
+                                                       BIGNUM *x, BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_set_affine_coordinates_GFp sets the value of |point| to be
+// (|x|, |y|). The |ctx| argument may be used if not NULL. It returns one
+// on success or zero on error. It's considered an error if the point is not on
+// the curve.
+//
+// Note that the corresponding function in OpenSSL versions prior to 1.0.2s does
+// not check if the point is on the curve. This is a security-critical check, so
+// code additionally supporting OpenSSL should repeat the check with
+// |EC_POINT_is_on_curve| or check for older OpenSSL versions with
+// |OPENSSL_VERSION_NUMBER|.
+OPENSSL_EXPORT int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group,
+                                                       EC_POINT *point,
+                                                       const BIGNUM *x,
+                                                       const BIGNUM *y,
+                                                       BN_CTX *ctx);
+
+// EC_POINT_point2oct serialises |point| into the X9.62 form given by |form|
+// into, at most, |len| bytes at |buf|. It returns the number of bytes written
+// or zero on error if |buf| is non-NULL, else the number of bytes needed. The
+// |ctx| argument may be used if not NULL.
+OPENSSL_EXPORT size_t EC_POINT_point2oct(const EC_GROUP *group,
+                                         const EC_POINT *point,
+                                         point_conversion_form_t form,
+                                         uint8_t *buf, size_t len, BN_CTX *ctx);
+
+// EC_POINT_point2cbb behaves like |EC_POINT_point2oct| but appends the
+// serialised point to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EC_POINT_point2cbb(CBB *out, const EC_GROUP *group,
+                                      const EC_POINT *point,
+                                      point_conversion_form_t form,
+                                      BN_CTX *ctx);
+
+// EC_POINT_oct2point sets |point| from |len| bytes of X9.62 format
+// serialisation in |buf|. It returns one on success and zero on error. The
+// |ctx| argument may be used if not NULL. It's considered an error if |buf|
+// does not represent a point on the curve.
+OPENSSL_EXPORT int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
+                                      const uint8_t *buf, size_t len,
+                                      BN_CTX *ctx);
+
+// EC_POINT_set_compressed_coordinates_GFp sets |point| to equal the point with
+// the given |x| coordinate and the y coordinate specified by |y_bit| (see
+// X9.62). It returns one on success and zero otherwise.
+OPENSSL_EXPORT int EC_POINT_set_compressed_coordinates_GFp(
+    const EC_GROUP *group, EC_POINT *point, const BIGNUM *x, int y_bit,
+    BN_CTX *ctx);
+
+
+// Group operations.
+
+// EC_POINT_add sets |r| equal to |a| plus |b|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_add(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, const EC_POINT *b,
+                                BN_CTX *ctx);
+
+// EC_POINT_dbl sets |r| equal to |a| plus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r,
+                                const EC_POINT *a, BN_CTX *ctx);
+
+// EC_POINT_invert sets |a| equal to minus |a|. It returns one on success and
+// zero otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a,
+                                   BN_CTX *ctx);
+
+// EC_POINT_mul sets r = generator*n + q*m. It returns one on success and zero
+// otherwise. If |ctx| is not NULL, it may be used.
+OPENSSL_EXPORT int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r,
+                                const BIGNUM *n, const EC_POINT *q,
+                                const BIGNUM *m, BN_CTX *ctx);
+
+
+// Deprecated functions.
+
+// EC_GROUP_new_curve_GFp creates a new, arbitrary elliptic curve group based
+// on the equation y² = x³ + a·x + b. It returns the new group or NULL on
+// error.
+//
+// This new group has no generator. It is an error to use a generator-less group
+// with any functions except for |EC_GROUP_free|, |EC_POINT_new|,
+// |EC_POINT_set_affine_coordinates_GFp|, and |EC_GROUP_set_generator|.
+//
+// |EC_GROUP|s returned by this function will always compare as unequal via
+// |EC_GROUP_cmp| (even to themselves). |EC_GROUP_get_curve_name| will always
+// return |NID_undef|.
+//
+// Avoid using arbitrary curves and use |EC_GROUP_new_by_curve_name| instead.
+OPENSSL_EXPORT EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p,
+                                                const BIGNUM *a,
+                                                const BIGNUM *b, BN_CTX *ctx);
+
+// EC_GROUP_set_generator sets the generator for |group| to |generator|, which
+// must have the given order and cofactor. It may only be used with |EC_GROUP|
+// objects returned by |EC_GROUP_new_curve_GFp| and may only be used once on
+// each group. |generator| must have been created using |group|.
+OPENSSL_EXPORT int EC_GROUP_set_generator(EC_GROUP *group,
+                                          const EC_POINT *generator,
+                                          const BIGNUM *order,
+                                          const BIGNUM *cofactor);
+
+// EC_GROUP_get_order sets |*order| to the order of |group|, if it's not
+// NULL. It returns one on success and zero otherwise. |ctx| is ignored. Use
+// |EC_GROUP_get0_order| instead.
+OPENSSL_EXPORT int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order,
+                                      BN_CTX *ctx);
+
+// EC_GROUP_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
+
+#define OPENSSL_EC_NAMED_CURVE 0
+#define OPENSSL_EC_EXPLICIT_CURVE 1
+
+typedef struct ec_method_st EC_METHOD;
+
+// EC_GROUP_method_of returns a dummy non-NULL pointer.
+OPENSSL_EXPORT const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
+
+// EC_METHOD_get_field_type returns NID_X9_62_prime_field.
+OPENSSL_EXPORT int EC_METHOD_get_field_type(const EC_METHOD *meth);
+
+// EC_GROUP_set_point_conversion_form aborts the process if |form| is not
+// |POINT_CONVERSION_UNCOMPRESSED| and otherwise does nothing.
+OPENSSL_EXPORT void EC_GROUP_set_point_conversion_form(
+    EC_GROUP *group, point_conversion_form_t form);
+
+// EC_builtin_curve describes a supported elliptic curve.
+typedef struct {
+  int nid;
+  const char *comment;
+} EC_builtin_curve;
+
+// EC_get_builtin_curves writes at most |max_num_curves| elements to
+// |out_curves| and returns the total number that it would have written, had
+// |max_num_curves| been large enough.
+//
+// The |EC_builtin_curve| items describe the supported elliptic curves.
+OPENSSL_EXPORT size_t EC_get_builtin_curves(EC_builtin_curve *out_curves,
+                                            size_t max_num_curves);
+
+// EC_POINT_clear_free calls |EC_POINT_free|.
+OPENSSL_EXPORT void EC_POINT_clear_free(EC_POINT *point);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+// Old code expects to get EC_KEY from ec.h.
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_POINT, EC_POINT_free)
+BORINGSSL_MAKE_DELETER(EC_GROUP, EC_GROUP_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EC_R_BUFFER_TOO_SMALL 100
+#define EC_R_COORDINATES_OUT_OF_RANGE 101
+#define EC_R_D2I_ECPKPARAMETERS_FAILURE 102
+#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 103
+#define EC_R_GROUP2PKPARAMETERS_FAILURE 104
+#define EC_R_I2D_ECPKPARAMETERS_FAILURE 105
+#define EC_R_INCOMPATIBLE_OBJECTS 106
+#define EC_R_INVALID_COMPRESSED_POINT 107
+#define EC_R_INVALID_COMPRESSION_BIT 108
+#define EC_R_INVALID_ENCODING 109
+#define EC_R_INVALID_FIELD 110
+#define EC_R_INVALID_FORM 111
+#define EC_R_INVALID_GROUP_ORDER 112
+#define EC_R_INVALID_PRIVATE_KEY 113
+#define EC_R_MISSING_PARAMETERS 114
+#define EC_R_MISSING_PRIVATE_KEY 115
+#define EC_R_NON_NAMED_CURVE 116
+#define EC_R_NOT_INITIALIZED 117
+#define EC_R_PKPARAMETERS2GROUP_FAILURE 118
+#define EC_R_POINT_AT_INFINITY 119
+#define EC_R_POINT_IS_NOT_ON_CURVE 120
+#define EC_R_SLOT_FULL 121
+#define EC_R_UNDEFINED_GENERATOR 122
+#define EC_R_UNKNOWN_GROUP 123
+#define EC_R_UNKNOWN_ORDER 124
+#define EC_R_WRONG_ORDER 125
+#define EC_R_BIGNUM_OUT_OF_RANGE 126
+#define EC_R_WRONG_CURVE_PARAMETERS 127
+#define EC_R_DECODE_ERROR 128
+#define EC_R_ENCODE_ERROR 129
+#define EC_R_GROUP_MISMATCH 130
+#define EC_R_INVALID_COFACTOR 131
+#define EC_R_PUBLIC_KEY_VALIDATION_FAILED 132
+#define EC_R_INVALID_SCALAR 133
+
+#endif  // OPENSSL_HEADER_EC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h
new file mode 100644
index 0000000..f2052fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h	
@@ -0,0 +1,372 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_KEY_H
+#define OPENSSL_HEADER_EC_KEY_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/ex_data.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ec_key.h contains functions that handle elliptic-curve points that are
+// public/private keys.
+
+
+// EC key objects.
+//
+// An |EC_KEY| object represents a public or private EC key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EC_KEY_new returns a fresh |EC_KEY| object or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new(void);
+
+// EC_KEY_new_method acts the same as |EC_KEY_new|, but takes an explicit
+// |ENGINE|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_method(const ENGINE *engine);
+
+// EC_KEY_new_by_curve_name returns a fresh EC_KEY for group specified by |nid|
+// or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_by_curve_name(int nid);
+
+// EC_KEY_free frees all the data owned by |key| and |key| itself.
+OPENSSL_EXPORT void EC_KEY_free(EC_KEY *key);
+
+// EC_KEY_dup returns a fresh copy of |src| or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_dup(const EC_KEY *src);
+
+// EC_KEY_up_ref increases the reference count of |key| and returns one. It does
+// not mutate |key| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int EC_KEY_up_ref(EC_KEY *key);
+
+// EC_KEY_is_opaque returns one if |key| is opaque and doesn't expose its key
+// material. Otherwise it return zero.
+OPENSSL_EXPORT int EC_KEY_is_opaque(const EC_KEY *key);
+
+// EC_KEY_get0_group returns a pointer to the |EC_GROUP| object inside |key|.
+OPENSSL_EXPORT const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
+
+// EC_KEY_set_group sets the |EC_GROUP| object that |key| will use to |group|.
+// It returns one on success and zero if |key| is already configured with a
+// different group.
+OPENSSL_EXPORT int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
+
+// EC_KEY_get0_private_key returns a pointer to the private key inside |key|.
+OPENSSL_EXPORT const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
+
+// EC_KEY_set_private_key sets the private key of |key| to |priv|. It returns
+// one on success and zero otherwise. |key| must already have had a group
+// configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|).
+OPENSSL_EXPORT int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv);
+
+// EC_KEY_get0_public_key returns a pointer to the public key point inside
+// |key|.
+OPENSSL_EXPORT const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
+
+// EC_KEY_set_public_key sets the public key of |key| to |pub|, by copying it.
+// It returns one on success and zero otherwise. |key| must already have had a
+// group configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|), and
+// |pub| must also belong to that group.
+OPENSSL_EXPORT int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
+
+#define EC_PKEY_NO_PARAMETERS 0x001
+#define EC_PKEY_NO_PUBKEY 0x002
+
+// EC_KEY_get_enc_flags returns the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
+
+// EC_KEY_set_enc_flags sets the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT void EC_KEY_set_enc_flags(EC_KEY *key, unsigned flags);
+
+// EC_KEY_get_conv_form returns the conversation form that will be used by
+// |key|.
+OPENSSL_EXPORT point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
+
+// EC_KEY_set_conv_form sets the conversion form to be used by |key|.
+OPENSSL_EXPORT void EC_KEY_set_conv_form(EC_KEY *key,
+                                         point_conversion_form_t cform);
+
+// EC_KEY_check_key performs several checks on |key| (possibly including an
+// expensive check that the public key is in the primary subgroup). It returns
+// one if all checks pass and zero otherwise. If it returns zero then detail
+// about the problem can be found on the error stack.
+OPENSSL_EXPORT int EC_KEY_check_key(const EC_KEY *key);
+
+// EC_KEY_check_fips performs a signing pairwise consistency test (FIPS 140-2
+// 4.9.2). It returns one if it passes and zero otherwise.
+OPENSSL_EXPORT int EC_KEY_check_fips(const EC_KEY *key);
+
+// EC_KEY_set_public_key_affine_coordinates sets the public key in |key| to
+// (|x|, |y|). It returns one on success and zero on error. It's considered an
+// error if |x| and |y| do not represent a point on |key|'s curve.
+OPENSSL_EXPORT int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
+                                                            const BIGNUM *x,
+                                                            const BIGNUM *y);
+
+// EC_KEY_key2buf encodes the public key in |key| to an allocated octet string
+// and sets |*out_buf| to point to it. It returns the length of the encoded
+// octet string or zero if an error occurred.
+OPENSSL_EXPORT size_t EC_KEY_key2buf(const EC_KEY *key,
+                                     point_conversion_form_t form,
+                                     unsigned char **out_buf, BN_CTX *ctx);
+
+
+// Key generation.
+
+// EC_KEY_generate_key generates a random, private key, calculates the
+// corresponding public key and stores both in |key|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int EC_KEY_generate_key(EC_KEY *key);
+
+// EC_KEY_generate_key_fips behaves like |EC_KEY_generate_key| but performs
+// additional checks for FIPS compliance.
+OPENSSL_EXPORT int EC_KEY_generate_key_fips(EC_KEY *key);
+
+// EC_KEY_derive_from_secret deterministically derives a private key for |group|
+// from an input secret using HKDF-SHA256. It returns a newly-allocated |EC_KEY|
+// on success or NULL on error. |secret| must not be used in any other
+// algorithm. If using a base secret for multiple operations, derive separate
+// values with a KDF such as HKDF first.
+//
+// Note this function implements an arbitrary derivation scheme, rather than any
+// particular standard one. New protocols are recommended to use X25519 and
+// Ed25519, which have standard byte import functions. See
+// |X25519_public_from_private| and |ED25519_keypair_from_seed|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_derive_from_secret(const EC_GROUP *group,
+                                                 const uint8_t *secret,
+                                                 size_t secret_len);
+
+
+// Serialisation.
+
+// EC_KEY_parse_private_key parses a DER-encoded ECPrivateKey structure (RFC
+// 5915) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_KEY| or
+// NULL on error. If |group| is non-null, the parameters field of the
+// ECPrivateKey may be omitted (but must match |group| if present). Otherwise,
+// the parameters field is required.
+OPENSSL_EXPORT EC_KEY *EC_KEY_parse_private_key(CBS *cbs,
+                                                const EC_GROUP *group);
+
+// EC_KEY_marshal_private_key marshals |key| as a DER-encoded ECPrivateKey
+// structure (RFC 5915) and appends the result to |cbb|. It returns one on
+// success and zero on failure. |enc_flags| is a combination of |EC_PKEY_*|
+// values and controls whether corresponding fields are omitted.
+OPENSSL_EXPORT int EC_KEY_marshal_private_key(CBB *cbb, const EC_KEY *key,
+                                              unsigned enc_flags);
+
+// EC_KEY_parse_curve_name parses a DER-encoded OBJECT IDENTIFIER as a curve
+// name from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_curve_name(CBS *cbs);
+
+// EC_KEY_marshal_curve_name marshals |group| as a DER-encoded OBJECT IDENTIFIER
+// and appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int EC_KEY_marshal_curve_name(CBB *cbb, const EC_GROUP *group);
+
+// EC_KEY_parse_parameters parses a DER-encoded ECParameters structure (RFC
+// 5480) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error. It supports the namedCurve and specifiedCurve options, but
+// use of specifiedCurve is deprecated. Use |EC_KEY_parse_curve_name|
+// instead.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_parameters(CBS *cbs);
+
+
+// ex_data functions.
+//
+// These functions are wrappers. See |ex_data.h| for details.
+
+OPENSSL_EXPORT int EC_KEY_get_ex_new_index(long argl, void *argp,
+                                           CRYPTO_EX_unused *unused,
+                                           CRYPTO_EX_dup *dup_unused,
+                                           CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int EC_KEY_set_ex_data(EC_KEY *r, int idx, void *arg);
+OPENSSL_EXPORT void *EC_KEY_get_ex_data(const EC_KEY *r, int idx);
+
+
+// ECDSA method.
+
+// ECDSA_FLAG_OPAQUE specifies that this ECDSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define ECDSA_FLAG_OPAQUE 1
+
+// ecdsa_method_st is a structure of function pointers for implementing ECDSA.
+// See engine.h.
+struct ecdsa_method_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(EC_KEY *key);
+  int (*finish)(EC_KEY *key);
+
+  // group_order_size returns the number of bytes needed to represent the order
+  // of the group. This is used to calculate the maximum size of an ECDSA
+  // signature in |ECDSA_size|.
+  size_t (*group_order_size)(const EC_KEY *key);
+
+  // sign matches the arguments and behaviour of |ECDSA_sign|.
+  int (*sign)(const uint8_t *digest, size_t digest_len, uint8_t *sig,
+              unsigned int *sig_len, EC_KEY *eckey);
+
+  int flags;
+};
+
+
+// Deprecated functions.
+
+// EC_KEY_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_KEY_set_asn1_flag(EC_KEY *key, int flag);
+
+// d2i_ECPrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes
+// at |*inp|. If |out_key| is not NULL then, on exit, a pointer to the result
+// is in |*out_key|. Note that, even if |*out_key| is already non-NULL on entry,
+// it * will not be written to. Rather, a fresh |EC_KEY| is allocated and the
+// previous * one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// On input, if |*out_key| is non-NULL and has a group configured, the
+// parameters field may be omitted but must match that group if present.
+//
+// Use |EC_KEY_parse_private_key| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECPrivateKey marshals an EC private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_ECPrivateKey(const EC_KEY *key, uint8_t **outp);
+
+// d2i_ECParameters parses an ASN.1, DER-encoded, set of EC parameters from
+// |len| bytes at |*inp|. If |out_key| is not NULL then, on exit, a pointer to
+// the result is in |*out_key|. Note that, even if |*out_key| is already
+// non-NULL on entry, it will not be written to. Rather, a fresh |EC_KEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the DER structure. It returns the result or NULL on error.
+//
+// Use |EC_KEY_parse_parameters| or |EC_KEY_parse_curve_name| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECParameters(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECParameters marshals EC parameters from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_curve_name| instead.
+OPENSSL_EXPORT int i2d_ECParameters(const EC_KEY *key, uint8_t **outp);
+
+// o2i_ECPublicKey parses an EC point from |len| bytes at |*inp| into
+// |*out_key|. Note that this differs from the d2i format in that |*out_key|
+// must be non-NULL with a group set. On successful exit, |*inp| is advanced by
+// |len| bytes. It returns |*out_key| or NULL on error.
+//
+// Use |EC_POINT_oct2point| instead.
+OPENSSL_EXPORT EC_KEY *o2i_ECPublicKey(EC_KEY **out_key, const uint8_t **inp,
+                                       long len);
+
+// i2o_ECPublicKey marshals an EC point from |key|. If |outp| is not NULL then
+// the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2o_ECPublicKey(const EC_KEY *key, unsigned char **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_KEY, EC_KEY_free)
+BORINGSSL_MAKE_UP_REF(EC_KEY, EC_KEY_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_EC_KEY_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.back
new file mode 100644
index 0000000..932ad8e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.back	
@@ -0,0 +1,372 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_KEY_H
+#define OPENSSL_HEADER_EC_KEY_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec.h>
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ec_key.h contains functions that handle elliptic-curve points that are
+// public/private keys.
+
+
+// EC key objects.
+//
+// An |EC_KEY| object represents a public or private EC key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EC_KEY_new returns a fresh |EC_KEY| object or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new(void);
+
+// EC_KEY_new_method acts the same as |EC_KEY_new|, but takes an explicit
+// |ENGINE|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_method(const ENGINE *engine);
+
+// EC_KEY_new_by_curve_name returns a fresh EC_KEY for group specified by |nid|
+// or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_by_curve_name(int nid);
+
+// EC_KEY_free frees all the data owned by |key| and |key| itself.
+OPENSSL_EXPORT void EC_KEY_free(EC_KEY *key);
+
+// EC_KEY_dup returns a fresh copy of |src| or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_dup(const EC_KEY *src);
+
+// EC_KEY_up_ref increases the reference count of |key| and returns one. It does
+// not mutate |key| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int EC_KEY_up_ref(EC_KEY *key);
+
+// EC_KEY_is_opaque returns one if |key| is opaque and doesn't expose its key
+// material. Otherwise it return zero.
+OPENSSL_EXPORT int EC_KEY_is_opaque(const EC_KEY *key);
+
+// EC_KEY_get0_group returns a pointer to the |EC_GROUP| object inside |key|.
+OPENSSL_EXPORT const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
+
+// EC_KEY_set_group sets the |EC_GROUP| object that |key| will use to |group|.
+// It returns one on success and zero if |key| is already configured with a
+// different group.
+OPENSSL_EXPORT int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
+
+// EC_KEY_get0_private_key returns a pointer to the private key inside |key|.
+OPENSSL_EXPORT const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
+
+// EC_KEY_set_private_key sets the private key of |key| to |priv|. It returns
+// one on success and zero otherwise. |key| must already have had a group
+// configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|).
+OPENSSL_EXPORT int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv);
+
+// EC_KEY_get0_public_key returns a pointer to the public key point inside
+// |key|.
+OPENSSL_EXPORT const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
+
+// EC_KEY_set_public_key sets the public key of |key| to |pub|, by copying it.
+// It returns one on success and zero otherwise. |key| must already have had a
+// group configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|), and
+// |pub| must also belong to that group.
+OPENSSL_EXPORT int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
+
+#define EC_PKEY_NO_PARAMETERS 0x001
+#define EC_PKEY_NO_PUBKEY 0x002
+
+// EC_KEY_get_enc_flags returns the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
+
+// EC_KEY_set_enc_flags sets the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT void EC_KEY_set_enc_flags(EC_KEY *key, unsigned flags);
+
+// EC_KEY_get_conv_form returns the conversation form that will be used by
+// |key|.
+OPENSSL_EXPORT point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
+
+// EC_KEY_set_conv_form sets the conversion form to be used by |key|.
+OPENSSL_EXPORT void EC_KEY_set_conv_form(EC_KEY *key,
+                                         point_conversion_form_t cform);
+
+// EC_KEY_check_key performs several checks on |key| (possibly including an
+// expensive check that the public key is in the primary subgroup). It returns
+// one if all checks pass and zero otherwise. If it returns zero then detail
+// about the problem can be found on the error stack.
+OPENSSL_EXPORT int EC_KEY_check_key(const EC_KEY *key);
+
+// EC_KEY_check_fips performs a signing pairwise consistency test (FIPS 140-2
+// 4.9.2). It returns one if it passes and zero otherwise.
+OPENSSL_EXPORT int EC_KEY_check_fips(const EC_KEY *key);
+
+// EC_KEY_set_public_key_affine_coordinates sets the public key in |key| to
+// (|x|, |y|). It returns one on success and zero on error. It's considered an
+// error if |x| and |y| do not represent a point on |key|'s curve.
+OPENSSL_EXPORT int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
+                                                            const BIGNUM *x,
+                                                            const BIGNUM *y);
+
+// EC_KEY_key2buf encodes the public key in |key| to an allocated octet string
+// and sets |*out_buf| to point to it. It returns the length of the encoded
+// octet string or zero if an error occurred.
+OPENSSL_EXPORT size_t EC_KEY_key2buf(const EC_KEY *key,
+                                     point_conversion_form_t form,
+                                     unsigned char **out_buf, BN_CTX *ctx);
+
+
+// Key generation.
+
+// EC_KEY_generate_key generates a random, private key, calculates the
+// corresponding public key and stores both in |key|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int EC_KEY_generate_key(EC_KEY *key);
+
+// EC_KEY_generate_key_fips behaves like |EC_KEY_generate_key| but performs
+// additional checks for FIPS compliance.
+OPENSSL_EXPORT int EC_KEY_generate_key_fips(EC_KEY *key);
+
+// EC_KEY_derive_from_secret deterministically derives a private key for |group|
+// from an input secret using HKDF-SHA256. It returns a newly-allocated |EC_KEY|
+// on success or NULL on error. |secret| must not be used in any other
+// algorithm. If using a base secret for multiple operations, derive separate
+// values with a KDF such as HKDF first.
+//
+// Note this function implements an arbitrary derivation scheme, rather than any
+// particular standard one. New protocols are recommended to use X25519 and
+// Ed25519, which have standard byte import functions. See
+// |X25519_public_from_private| and |ED25519_keypair_from_seed|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_derive_from_secret(const EC_GROUP *group,
+                                                 const uint8_t *secret,
+                                                 size_t secret_len);
+
+
+// Serialisation.
+
+// EC_KEY_parse_private_key parses a DER-encoded ECPrivateKey structure (RFC
+// 5915) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_KEY| or
+// NULL on error. If |group| is non-null, the parameters field of the
+// ECPrivateKey may be omitted (but must match |group| if present). Otherwise,
+// the parameters field is required.
+OPENSSL_EXPORT EC_KEY *EC_KEY_parse_private_key(CBS *cbs,
+                                                const EC_GROUP *group);
+
+// EC_KEY_marshal_private_key marshals |key| as a DER-encoded ECPrivateKey
+// structure (RFC 5915) and appends the result to |cbb|. It returns one on
+// success and zero on failure. |enc_flags| is a combination of |EC_PKEY_*|
+// values and controls whether corresponding fields are omitted.
+OPENSSL_EXPORT int EC_KEY_marshal_private_key(CBB *cbb, const EC_KEY *key,
+                                              unsigned enc_flags);
+
+// EC_KEY_parse_curve_name parses a DER-encoded OBJECT IDENTIFIER as a curve
+// name from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_curve_name(CBS *cbs);
+
+// EC_KEY_marshal_curve_name marshals |group| as a DER-encoded OBJECT IDENTIFIER
+// and appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int EC_KEY_marshal_curve_name(CBB *cbb, const EC_GROUP *group);
+
+// EC_KEY_parse_parameters parses a DER-encoded ECParameters structure (RFC
+// 5480) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error. It supports the namedCurve and specifiedCurve options, but
+// use of specifiedCurve is deprecated. Use |EC_KEY_parse_curve_name|
+// instead.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_parameters(CBS *cbs);
+
+
+// ex_data functions.
+//
+// These functions are wrappers. See |ex_data.h| for details.
+
+OPENSSL_EXPORT int EC_KEY_get_ex_new_index(long argl, void *argp,
+                                           CRYPTO_EX_unused *unused,
+                                           CRYPTO_EX_dup *dup_unused,
+                                           CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int EC_KEY_set_ex_data(EC_KEY *r, int idx, void *arg);
+OPENSSL_EXPORT void *EC_KEY_get_ex_data(const EC_KEY *r, int idx);
+
+
+// ECDSA method.
+
+// ECDSA_FLAG_OPAQUE specifies that this ECDSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define ECDSA_FLAG_OPAQUE 1
+
+// ecdsa_method_st is a structure of function pointers for implementing ECDSA.
+// See engine.h.
+struct ecdsa_method_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(EC_KEY *key);
+  int (*finish)(EC_KEY *key);
+
+  // group_order_size returns the number of bytes needed to represent the order
+  // of the group. This is used to calculate the maximum size of an ECDSA
+  // signature in |ECDSA_size|.
+  size_t (*group_order_size)(const EC_KEY *key);
+
+  // sign matches the arguments and behaviour of |ECDSA_sign|.
+  int (*sign)(const uint8_t *digest, size_t digest_len, uint8_t *sig,
+              unsigned int *sig_len, EC_KEY *eckey);
+
+  int flags;
+};
+
+
+// Deprecated functions.
+
+// EC_KEY_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_KEY_set_asn1_flag(EC_KEY *key, int flag);
+
+// d2i_ECPrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes
+// at |*inp|. If |out_key| is not NULL then, on exit, a pointer to the result
+// is in |*out_key|. Note that, even if |*out_key| is already non-NULL on entry,
+// it * will not be written to. Rather, a fresh |EC_KEY| is allocated and the
+// previous * one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// On input, if |*out_key| is non-NULL and has a group configured, the
+// parameters field may be omitted but must match that group if present.
+//
+// Use |EC_KEY_parse_private_key| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECPrivateKey marshals an EC private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_ECPrivateKey(const EC_KEY *key, uint8_t **outp);
+
+// d2i_ECParameters parses an ASN.1, DER-encoded, set of EC parameters from
+// |len| bytes at |*inp|. If |out_key| is not NULL then, on exit, a pointer to
+// the result is in |*out_key|. Note that, even if |*out_key| is already
+// non-NULL on entry, it will not be written to. Rather, a fresh |EC_KEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the DER structure. It returns the result or NULL on error.
+//
+// Use |EC_KEY_parse_parameters| or |EC_KEY_parse_curve_name| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECParameters(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECParameters marshals EC parameters from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_curve_name| instead.
+OPENSSL_EXPORT int i2d_ECParameters(const EC_KEY *key, uint8_t **outp);
+
+// o2i_ECPublicKey parses an EC point from |len| bytes at |*inp| into
+// |*out_key|. Note that this differs from the d2i format in that |*out_key|
+// must be non-NULL with a group set. On successful exit, |*inp| is advanced by
+// |len| bytes. It returns |*out_key| or NULL on error.
+//
+// Use |EC_POINT_oct2point| instead.
+OPENSSL_EXPORT EC_KEY *o2i_ECPublicKey(EC_KEY **out_key, const uint8_t **inp,
+                                       long len);
+
+// i2o_ECPublicKey marshals an EC point from |key|. If |outp| is not NULL then
+// the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2o_ECPublicKey(const EC_KEY *key, unsigned char **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_KEY, EC_KEY_free)
+BORINGSSL_MAKE_UP_REF(EC_KEY, EC_KEY_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_EC_KEY_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.grpc_back
new file mode 100644
index 0000000..932ad8e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ec_key.h.grpc_back	
@@ -0,0 +1,372 @@
+/* Originally written by Bodo Moeller for the OpenSSL project.
+ * ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * The elliptic curve binary polynomial software is originally written by
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems
+ * Laboratories. */
+
+#ifndef OPENSSL_HEADER_EC_KEY_H
+#define OPENSSL_HEADER_EC_KEY_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec.h>
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ec_key.h contains functions that handle elliptic-curve points that are
+// public/private keys.
+
+
+// EC key objects.
+//
+// An |EC_KEY| object represents a public or private EC key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EC_KEY_new returns a fresh |EC_KEY| object or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new(void);
+
+// EC_KEY_new_method acts the same as |EC_KEY_new|, but takes an explicit
+// |ENGINE|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_method(const ENGINE *engine);
+
+// EC_KEY_new_by_curve_name returns a fresh EC_KEY for group specified by |nid|
+// or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_new_by_curve_name(int nid);
+
+// EC_KEY_free frees all the data owned by |key| and |key| itself.
+OPENSSL_EXPORT void EC_KEY_free(EC_KEY *key);
+
+// EC_KEY_dup returns a fresh copy of |src| or NULL on error.
+OPENSSL_EXPORT EC_KEY *EC_KEY_dup(const EC_KEY *src);
+
+// EC_KEY_up_ref increases the reference count of |key| and returns one. It does
+// not mutate |key| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int EC_KEY_up_ref(EC_KEY *key);
+
+// EC_KEY_is_opaque returns one if |key| is opaque and doesn't expose its key
+// material. Otherwise it return zero.
+OPENSSL_EXPORT int EC_KEY_is_opaque(const EC_KEY *key);
+
+// EC_KEY_get0_group returns a pointer to the |EC_GROUP| object inside |key|.
+OPENSSL_EXPORT const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
+
+// EC_KEY_set_group sets the |EC_GROUP| object that |key| will use to |group|.
+// It returns one on success and zero if |key| is already configured with a
+// different group.
+OPENSSL_EXPORT int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
+
+// EC_KEY_get0_private_key returns a pointer to the private key inside |key|.
+OPENSSL_EXPORT const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
+
+// EC_KEY_set_private_key sets the private key of |key| to |priv|. It returns
+// one on success and zero otherwise. |key| must already have had a group
+// configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|).
+OPENSSL_EXPORT int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv);
+
+// EC_KEY_get0_public_key returns a pointer to the public key point inside
+// |key|.
+OPENSSL_EXPORT const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
+
+// EC_KEY_set_public_key sets the public key of |key| to |pub|, by copying it.
+// It returns one on success and zero otherwise. |key| must already have had a
+// group configured (see |EC_KEY_set_group| and |EC_KEY_new_by_curve_name|), and
+// |pub| must also belong to that group.
+OPENSSL_EXPORT int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
+
+#define EC_PKEY_NO_PARAMETERS 0x001
+#define EC_PKEY_NO_PUBKEY 0x002
+
+// EC_KEY_get_enc_flags returns the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
+
+// EC_KEY_set_enc_flags sets the encoding flags for |key|, which is a
+// bitwise-OR of |EC_PKEY_*| values.
+OPENSSL_EXPORT void EC_KEY_set_enc_flags(EC_KEY *key, unsigned flags);
+
+// EC_KEY_get_conv_form returns the conversation form that will be used by
+// |key|.
+OPENSSL_EXPORT point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
+
+// EC_KEY_set_conv_form sets the conversion form to be used by |key|.
+OPENSSL_EXPORT void EC_KEY_set_conv_form(EC_KEY *key,
+                                         point_conversion_form_t cform);
+
+// EC_KEY_check_key performs several checks on |key| (possibly including an
+// expensive check that the public key is in the primary subgroup). It returns
+// one if all checks pass and zero otherwise. If it returns zero then detail
+// about the problem can be found on the error stack.
+OPENSSL_EXPORT int EC_KEY_check_key(const EC_KEY *key);
+
+// EC_KEY_check_fips performs a signing pairwise consistency test (FIPS 140-2
+// 4.9.2). It returns one if it passes and zero otherwise.
+OPENSSL_EXPORT int EC_KEY_check_fips(const EC_KEY *key);
+
+// EC_KEY_set_public_key_affine_coordinates sets the public key in |key| to
+// (|x|, |y|). It returns one on success and zero on error. It's considered an
+// error if |x| and |y| do not represent a point on |key|'s curve.
+OPENSSL_EXPORT int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key,
+                                                            const BIGNUM *x,
+                                                            const BIGNUM *y);
+
+// EC_KEY_key2buf encodes the public key in |key| to an allocated octet string
+// and sets |*out_buf| to point to it. It returns the length of the encoded
+// octet string or zero if an error occurred.
+OPENSSL_EXPORT size_t EC_KEY_key2buf(const EC_KEY *key,
+                                     point_conversion_form_t form,
+                                     unsigned char **out_buf, BN_CTX *ctx);
+
+
+// Key generation.
+
+// EC_KEY_generate_key generates a random, private key, calculates the
+// corresponding public key and stores both in |key|. It returns one on success
+// or zero otherwise.
+OPENSSL_EXPORT int EC_KEY_generate_key(EC_KEY *key);
+
+// EC_KEY_generate_key_fips behaves like |EC_KEY_generate_key| but performs
+// additional checks for FIPS compliance.
+OPENSSL_EXPORT int EC_KEY_generate_key_fips(EC_KEY *key);
+
+// EC_KEY_derive_from_secret deterministically derives a private key for |group|
+// from an input secret using HKDF-SHA256. It returns a newly-allocated |EC_KEY|
+// on success or NULL on error. |secret| must not be used in any other
+// algorithm. If using a base secret for multiple operations, derive separate
+// values with a KDF such as HKDF first.
+//
+// Note this function implements an arbitrary derivation scheme, rather than any
+// particular standard one. New protocols are recommended to use X25519 and
+// Ed25519, which have standard byte import functions. See
+// |X25519_public_from_private| and |ED25519_keypair_from_seed|.
+OPENSSL_EXPORT EC_KEY *EC_KEY_derive_from_secret(const EC_GROUP *group,
+                                                 const uint8_t *secret,
+                                                 size_t secret_len);
+
+
+// Serialisation.
+
+// EC_KEY_parse_private_key parses a DER-encoded ECPrivateKey structure (RFC
+// 5915) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_KEY| or
+// NULL on error. If |group| is non-null, the parameters field of the
+// ECPrivateKey may be omitted (but must match |group| if present). Otherwise,
+// the parameters field is required.
+OPENSSL_EXPORT EC_KEY *EC_KEY_parse_private_key(CBS *cbs,
+                                                const EC_GROUP *group);
+
+// EC_KEY_marshal_private_key marshals |key| as a DER-encoded ECPrivateKey
+// structure (RFC 5915) and appends the result to |cbb|. It returns one on
+// success and zero on failure. |enc_flags| is a combination of |EC_PKEY_*|
+// values and controls whether corresponding fields are omitted.
+OPENSSL_EXPORT int EC_KEY_marshal_private_key(CBB *cbb, const EC_KEY *key,
+                                              unsigned enc_flags);
+
+// EC_KEY_parse_curve_name parses a DER-encoded OBJECT IDENTIFIER as a curve
+// name from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_curve_name(CBS *cbs);
+
+// EC_KEY_marshal_curve_name marshals |group| as a DER-encoded OBJECT IDENTIFIER
+// and appends the result to |cbb|. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int EC_KEY_marshal_curve_name(CBB *cbb, const EC_GROUP *group);
+
+// EC_KEY_parse_parameters parses a DER-encoded ECParameters structure (RFC
+// 5480) from |cbs| and advances |cbs|. It returns a newly-allocated |EC_GROUP|
+// or NULL on error. It supports the namedCurve and specifiedCurve options, but
+// use of specifiedCurve is deprecated. Use |EC_KEY_parse_curve_name|
+// instead.
+OPENSSL_EXPORT EC_GROUP *EC_KEY_parse_parameters(CBS *cbs);
+
+
+// ex_data functions.
+//
+// These functions are wrappers. See |ex_data.h| for details.
+
+OPENSSL_EXPORT int EC_KEY_get_ex_new_index(long argl, void *argp,
+                                           CRYPTO_EX_unused *unused,
+                                           CRYPTO_EX_dup *dup_unused,
+                                           CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int EC_KEY_set_ex_data(EC_KEY *r, int idx, void *arg);
+OPENSSL_EXPORT void *EC_KEY_get_ex_data(const EC_KEY *r, int idx);
+
+
+// ECDSA method.
+
+// ECDSA_FLAG_OPAQUE specifies that this ECDSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define ECDSA_FLAG_OPAQUE 1
+
+// ecdsa_method_st is a structure of function pointers for implementing ECDSA.
+// See engine.h.
+struct ecdsa_method_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(EC_KEY *key);
+  int (*finish)(EC_KEY *key);
+
+  // group_order_size returns the number of bytes needed to represent the order
+  // of the group. This is used to calculate the maximum size of an ECDSA
+  // signature in |ECDSA_size|.
+  size_t (*group_order_size)(const EC_KEY *key);
+
+  // sign matches the arguments and behaviour of |ECDSA_sign|.
+  int (*sign)(const uint8_t *digest, size_t digest_len, uint8_t *sig,
+              unsigned int *sig_len, EC_KEY *eckey);
+
+  int flags;
+};
+
+
+// Deprecated functions.
+
+// EC_KEY_set_asn1_flag does nothing.
+OPENSSL_EXPORT void EC_KEY_set_asn1_flag(EC_KEY *key, int flag);
+
+// d2i_ECPrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes
+// at |*inp|. If |out_key| is not NULL then, on exit, a pointer to the result
+// is in |*out_key|. Note that, even if |*out_key| is already non-NULL on entry,
+// it * will not be written to. Rather, a fresh |EC_KEY| is allocated and the
+// previous * one is freed. On successful exit, |*inp| is advanced past the DER
+// structure. It returns the result or NULL on error.
+//
+// On input, if |*out_key| is non-NULL and has a group configured, the
+// parameters field may be omitted but must match that group if present.
+//
+// Use |EC_KEY_parse_private_key| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECPrivateKey marshals an EC private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_ECPrivateKey(const EC_KEY *key, uint8_t **outp);
+
+// d2i_ECParameters parses an ASN.1, DER-encoded, set of EC parameters from
+// |len| bytes at |*inp|. If |out_key| is not NULL then, on exit, a pointer to
+// the result is in |*out_key|. Note that, even if |*out_key| is already
+// non-NULL on entry, it will not be written to. Rather, a fresh |EC_KEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the DER structure. It returns the result or NULL on error.
+//
+// Use |EC_KEY_parse_parameters| or |EC_KEY_parse_curve_name| instead.
+OPENSSL_EXPORT EC_KEY *d2i_ECParameters(EC_KEY **out_key, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECParameters marshals EC parameters from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// Use |EC_KEY_marshal_curve_name| instead.
+OPENSSL_EXPORT int i2d_ECParameters(const EC_KEY *key, uint8_t **outp);
+
+// o2i_ECPublicKey parses an EC point from |len| bytes at |*inp| into
+// |*out_key|. Note that this differs from the d2i format in that |*out_key|
+// must be non-NULL with a group set. On successful exit, |*inp| is advanced by
+// |len| bytes. It returns |*out_key| or NULL on error.
+//
+// Use |EC_POINT_oct2point| instead.
+OPENSSL_EXPORT EC_KEY *o2i_ECPublicKey(EC_KEY **out_key, const uint8_t **inp,
+                                       long len);
+
+// i2o_ECPublicKey marshals an EC point from |key|. If |outp| is not NULL then
+// the result is written to |*outp| and |*outp| is advanced just past the
+// output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+//
+// Use |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2o_ECPublicKey(const EC_KEY *key, unsigned char **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EC_KEY, EC_KEY_free)
+BORINGSSL_MAKE_UP_REF(EC_KEY, EC_KEY_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_EC_KEY_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h
new file mode 100644
index 0000000..1857367
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h	
@@ -0,0 +1,118 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDH_H
+#define OPENSSL_HEADER_ECDH_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Elliptic curve Diffie-Hellman.
+
+
+// ECDH_compute_key calculates the shared key between |pub_key| and |priv_key|.
+// If |kdf| is not NULL, then it is called with the bytes of the shared key and
+// the parameter |out|. When |kdf| returns, the value of |*outlen| becomes the
+// return value. Otherwise, as many bytes of the shared key as will fit are
+// copied directly to, at most, |outlen| bytes at |out|. It returns the number
+// of bytes written to |out|, or -1 on error.
+OPENSSL_EXPORT int ECDH_compute_key(
+    void *out, size_t outlen, const EC_POINT *pub_key, const EC_KEY *priv_key,
+    void *(*kdf)(const void *in, size_t inlen, void *out, size_t *outlen));
+
+// ECDH_compute_key_fips calculates the shared key between |pub_key| and
+// |priv_key| and hashes it with the appropriate SHA function for |out_len|. The
+// only value values for |out_len| are thus 24 (SHA-224), 32 (SHA-256), 48
+// (SHA-384), and 64 (SHA-512). It returns one on success and zero on error.
+//
+// Note that the return value is different to |ECDH_compute_key|: it returns an
+// error flag (as is common for BoringSSL) rather than the number of bytes
+// written.
+//
+// This function allows the FIPS module to compute an ECDH and KDF within the
+// module boundary without taking an arbitrary function pointer for the KDF,
+// which isn't very FIPSy.
+OPENSSL_EXPORT int ECDH_compute_key_fips(uint8_t *out, size_t out_len,
+                                         const EC_POINT *pub_key,
+                                         const EC_KEY *priv_key);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define ECDH_R_KDF_FAILED 100
+#define ECDH_R_NO_PRIVATE_VALUE 101
+#define ECDH_R_POINT_ARITHMETIC_FAILURE 102
+#define ECDH_R_UNKNOWN_DIGEST_LENGTH 103
+
+#endif  // OPENSSL_HEADER_ECDH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.back
new file mode 100644
index 0000000..0130ccc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.back	
@@ -0,0 +1,118 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDH_H
+#define OPENSSL_HEADER_ECDH_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Elliptic curve Diffie-Hellman.
+
+
+// ECDH_compute_key calculates the shared key between |pub_key| and |priv_key|.
+// If |kdf| is not NULL, then it is called with the bytes of the shared key and
+// the parameter |out|. When |kdf| returns, the value of |*outlen| becomes the
+// return value. Otherwise, as many bytes of the shared key as will fit are
+// copied directly to, at most, |outlen| bytes at |out|. It returns the number
+// of bytes written to |out|, or -1 on error.
+OPENSSL_EXPORT int ECDH_compute_key(
+    void *out, size_t outlen, const EC_POINT *pub_key, const EC_KEY *priv_key,
+    void *(*kdf)(const void *in, size_t inlen, void *out, size_t *outlen));
+
+// ECDH_compute_key_fips calculates the shared key between |pub_key| and
+// |priv_key| and hashes it with the appropriate SHA function for |out_len|. The
+// only value values for |out_len| are thus 24 (SHA-224), 32 (SHA-256), 48
+// (SHA-384), and 64 (SHA-512). It returns one on success and zero on error.
+//
+// Note that the return value is different to |ECDH_compute_key|: it returns an
+// error flag (as is common for BoringSSL) rather than the number of bytes
+// written.
+//
+// This function allows the FIPS module to compute an ECDH and KDF within the
+// module boundary without taking an arbitrary function pointer for the KDF,
+// which isn't very FIPSy.
+OPENSSL_EXPORT int ECDH_compute_key_fips(uint8_t *out, size_t out_len,
+                                         const EC_POINT *pub_key,
+                                         const EC_KEY *priv_key);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define ECDH_R_KDF_FAILED 100
+#define ECDH_R_NO_PRIVATE_VALUE 101
+#define ECDH_R_POINT_ARITHMETIC_FAILURE 102
+#define ECDH_R_UNKNOWN_DIGEST_LENGTH 103
+
+#endif  // OPENSSL_HEADER_ECDH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.grpc_back
new file mode 100644
index 0000000..0130ccc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdh.h.grpc_back	
@@ -0,0 +1,118 @@
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDH_H
+#define OPENSSL_HEADER_ECDH_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Elliptic curve Diffie-Hellman.
+
+
+// ECDH_compute_key calculates the shared key between |pub_key| and |priv_key|.
+// If |kdf| is not NULL, then it is called with the bytes of the shared key and
+// the parameter |out|. When |kdf| returns, the value of |*outlen| becomes the
+// return value. Otherwise, as many bytes of the shared key as will fit are
+// copied directly to, at most, |outlen| bytes at |out|. It returns the number
+// of bytes written to |out|, or -1 on error.
+OPENSSL_EXPORT int ECDH_compute_key(
+    void *out, size_t outlen, const EC_POINT *pub_key, const EC_KEY *priv_key,
+    void *(*kdf)(const void *in, size_t inlen, void *out, size_t *outlen));
+
+// ECDH_compute_key_fips calculates the shared key between |pub_key| and
+// |priv_key| and hashes it with the appropriate SHA function for |out_len|. The
+// only value values for |out_len| are thus 24 (SHA-224), 32 (SHA-256), 48
+// (SHA-384), and 64 (SHA-512). It returns one on success and zero on error.
+//
+// Note that the return value is different to |ECDH_compute_key|: it returns an
+// error flag (as is common for BoringSSL) rather than the number of bytes
+// written.
+//
+// This function allows the FIPS module to compute an ECDH and KDF within the
+// module boundary without taking an arbitrary function pointer for the KDF,
+// which isn't very FIPSy.
+OPENSSL_EXPORT int ECDH_compute_key_fips(uint8_t *out, size_t out_len,
+                                         const EC_POINT *pub_key,
+                                         const EC_KEY *priv_key);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define ECDH_R_KDF_FAILED 100
+#define ECDH_R_NO_PRIVATE_VALUE 101
+#define ECDH_R_POINT_ARITHMETIC_FAILURE 102
+#define ECDH_R_UNKNOWN_DIGEST_LENGTH 103
+
+#endif  // OPENSSL_HEADER_ECDH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h
new file mode 100644
index 0000000..116384b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h	
@@ -0,0 +1,199 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDSA_H
+#define OPENSSL_HEADER_ECDSA_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ECDSA contains functions for signing and verifying with the Digital Signature
+// Algorithm over elliptic curves.
+
+
+// Signing and verifying.
+
+// ECDSA_sign signs |digest_len| bytes from |digest| with |key| and writes the
+// resulting signature to |sig|, which must have |ECDSA_size(key)| bytes of
+// space. On successful exit, |*sig_len| is set to the actual number of bytes
+// written. The |type| argument should be zero. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int ECDSA_sign(int type, const uint8_t *digest,
+                              size_t digest_len, uint8_t *sig,
+                              unsigned int *sig_len, const EC_KEY *key);
+
+// ECDSA_verify verifies that |sig_len| bytes from |sig| constitute a valid
+// signature by |key| of |digest|. (The |type| argument should be zero.) It
+// returns one on success or zero if the signature is invalid or an error
+// occurred.
+OPENSSL_EXPORT int ECDSA_verify(int type, const uint8_t *digest,
+                                size_t digest_len, const uint8_t *sig,
+                                size_t sig_len, const EC_KEY *key);
+
+// ECDSA_size returns the maximum size of an ECDSA signature using |key|. It
+// returns zero if |key| is NULL or if it doesn't have a group set.
+OPENSSL_EXPORT size_t ECDSA_size(const EC_KEY *key);
+
+
+// Low-level signing and verification.
+//
+// Low-level functions handle signatures as |ECDSA_SIG| structures which allow
+// the two values in an ECDSA signature to be handled separately.
+
+struct ecdsa_sig_st {
+  BIGNUM *r;
+  BIGNUM *s;
+};
+
+// ECDSA_SIG_new returns a fresh |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_new(void);
+
+// ECDSA_SIG_free frees |sig| its member |BIGNUM|s.
+OPENSSL_EXPORT void ECDSA_SIG_free(ECDSA_SIG *sig);
+
+// ECDSA_SIG_get0 sets |*out_r| and |*out_s|, if non-NULL, to the two
+// components of |sig|.
+OPENSSL_EXPORT void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
+                                   const BIGNUM **out_s);
+
+// ECDSA_SIG_set0 sets |sig|'s components to |r| and |s|, neither of which may
+// be NULL. On success, it takes ownership of each argument and returns one.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
+
+// ECDSA_do_sign signs |digest_len| bytes from |digest| with |key| and returns
+// the resulting signature structure, or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest,
+                                        size_t digest_len, const EC_KEY *key);
+
+// ECDSA_do_verify verifies that |sig| constitutes a valid signature by |key|
+// of |digest|. It returns one on success or zero if the signature is invalid
+// or on error.
+OPENSSL_EXPORT int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                   const ECDSA_SIG *sig, const EC_KEY *key);
+
+
+// ASN.1 functions.
+
+// ECDSA_SIG_parse parses a DER-encoded ECDSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |ECDSA_SIG| or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs);
+
+// ECDSA_SIG_from_bytes parses |in| as a DER-encoded ECDSA-Sig-Value structure.
+// It returns a newly-allocated |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// ECDSA_SIG_marshal marshals |sig| as a DER-encoded ECDSA-Sig-Value and appends
+// the result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig);
+
+// ECDSA_SIG_to_bytes marshals |sig| as a DER-encoded ECDSA-Sig-Value and, on
+// success, sets |*out_bytes| to a newly allocated buffer containing the result
+// and returns one. Otherwise, it returns zero. The result should be freed with
+// |OPENSSL_free|.
+OPENSSL_EXPORT int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                      const ECDSA_SIG *sig);
+
+// ECDSA_SIG_max_len returns the maximum length of a DER-encoded ECDSA-Sig-Value
+// structure for a group whose order is represented in |order_len| bytes, or
+// zero on overflow.
+OPENSSL_EXPORT size_t ECDSA_SIG_max_len(size_t order_len);
+
+
+// Deprecated functions.
+
+// d2i_ECDSA_SIG parses an ASN.1, DER-encoded, signature from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |ECDSA_SIG| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECDSA_SIG marshals a signature from |sig| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ECDSA_SIG, ECDSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ECDSA_R_BAD_SIGNATURE 100
+#define ECDSA_R_MISSING_PARAMETERS 101
+#define ECDSA_R_NEED_NEW_SETUP_VALUES 102
+#define ECDSA_R_NOT_IMPLEMENTED 103
+#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104
+#define ECDSA_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_ECDSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.back
new file mode 100644
index 0000000..d4d353e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.back	
@@ -0,0 +1,199 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDSA_H
+#define OPENSSL_HEADER_ECDSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ECDSA contains functions for signing and verifying with the Digital Signature
+// Algorithm over elliptic curves.
+
+
+// Signing and verifying.
+
+// ECDSA_sign signs |digest_len| bytes from |digest| with |key| and writes the
+// resulting signature to |sig|, which must have |ECDSA_size(key)| bytes of
+// space. On successful exit, |*sig_len| is set to the actual number of bytes
+// written. The |type| argument should be zero. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int ECDSA_sign(int type, const uint8_t *digest,
+                              size_t digest_len, uint8_t *sig,
+                              unsigned int *sig_len, const EC_KEY *key);
+
+// ECDSA_verify verifies that |sig_len| bytes from |sig| constitute a valid
+// signature by |key| of |digest|. (The |type| argument should be zero.) It
+// returns one on success or zero if the signature is invalid or an error
+// occurred.
+OPENSSL_EXPORT int ECDSA_verify(int type, const uint8_t *digest,
+                                size_t digest_len, const uint8_t *sig,
+                                size_t sig_len, const EC_KEY *key);
+
+// ECDSA_size returns the maximum size of an ECDSA signature using |key|. It
+// returns zero if |key| is NULL or if it doesn't have a group set.
+OPENSSL_EXPORT size_t ECDSA_size(const EC_KEY *key);
+
+
+// Low-level signing and verification.
+//
+// Low-level functions handle signatures as |ECDSA_SIG| structures which allow
+// the two values in an ECDSA signature to be handled separately.
+
+struct ecdsa_sig_st {
+  BIGNUM *r;
+  BIGNUM *s;
+};
+
+// ECDSA_SIG_new returns a fresh |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_new(void);
+
+// ECDSA_SIG_free frees |sig| its member |BIGNUM|s.
+OPENSSL_EXPORT void ECDSA_SIG_free(ECDSA_SIG *sig);
+
+// ECDSA_SIG_get0 sets |*out_r| and |*out_s|, if non-NULL, to the two
+// components of |sig|.
+OPENSSL_EXPORT void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
+                                   const BIGNUM **out_s);
+
+// ECDSA_SIG_set0 sets |sig|'s components to |r| and |s|, neither of which may
+// be NULL. On success, it takes ownership of each argument and returns one.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
+
+// ECDSA_do_sign signs |digest_len| bytes from |digest| with |key| and returns
+// the resulting signature structure, or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest,
+                                        size_t digest_len, const EC_KEY *key);
+
+// ECDSA_do_verify verifies that |sig| constitutes a valid signature by |key|
+// of |digest|. It returns one on success or zero if the signature is invalid
+// or on error.
+OPENSSL_EXPORT int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                   const ECDSA_SIG *sig, const EC_KEY *key);
+
+
+// ASN.1 functions.
+
+// ECDSA_SIG_parse parses a DER-encoded ECDSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |ECDSA_SIG| or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs);
+
+// ECDSA_SIG_from_bytes parses |in| as a DER-encoded ECDSA-Sig-Value structure.
+// It returns a newly-allocated |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// ECDSA_SIG_marshal marshals |sig| as a DER-encoded ECDSA-Sig-Value and appends
+// the result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig);
+
+// ECDSA_SIG_to_bytes marshals |sig| as a DER-encoded ECDSA-Sig-Value and, on
+// success, sets |*out_bytes| to a newly allocated buffer containing the result
+// and returns one. Otherwise, it returns zero. The result should be freed with
+// |OPENSSL_free|.
+OPENSSL_EXPORT int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                      const ECDSA_SIG *sig);
+
+// ECDSA_SIG_max_len returns the maximum length of a DER-encoded ECDSA-Sig-Value
+// structure for a group whose order is represented in |order_len| bytes, or
+// zero on overflow.
+OPENSSL_EXPORT size_t ECDSA_SIG_max_len(size_t order_len);
+
+
+// Deprecated functions.
+
+// d2i_ECDSA_SIG parses an ASN.1, DER-encoded, signature from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |ECDSA_SIG| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECDSA_SIG marshals a signature from |sig| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ECDSA_SIG, ECDSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ECDSA_R_BAD_SIGNATURE 100
+#define ECDSA_R_MISSING_PARAMETERS 101
+#define ECDSA_R_NEED_NEW_SETUP_VALUES 102
+#define ECDSA_R_NOT_IMPLEMENTED 103
+#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104
+#define ECDSA_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_ECDSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.grpc_back
new file mode 100644
index 0000000..d4d353e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ecdsa.h.grpc_back	
@@ -0,0 +1,199 @@
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ECDSA_H
+#define OPENSSL_HEADER_ECDSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/ec_key.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ECDSA contains functions for signing and verifying with the Digital Signature
+// Algorithm over elliptic curves.
+
+
+// Signing and verifying.
+
+// ECDSA_sign signs |digest_len| bytes from |digest| with |key| and writes the
+// resulting signature to |sig|, which must have |ECDSA_size(key)| bytes of
+// space. On successful exit, |*sig_len| is set to the actual number of bytes
+// written. The |type| argument should be zero. It returns one on success and
+// zero otherwise.
+OPENSSL_EXPORT int ECDSA_sign(int type, const uint8_t *digest,
+                              size_t digest_len, uint8_t *sig,
+                              unsigned int *sig_len, const EC_KEY *key);
+
+// ECDSA_verify verifies that |sig_len| bytes from |sig| constitute a valid
+// signature by |key| of |digest|. (The |type| argument should be zero.) It
+// returns one on success or zero if the signature is invalid or an error
+// occurred.
+OPENSSL_EXPORT int ECDSA_verify(int type, const uint8_t *digest,
+                                size_t digest_len, const uint8_t *sig,
+                                size_t sig_len, const EC_KEY *key);
+
+// ECDSA_size returns the maximum size of an ECDSA signature using |key|. It
+// returns zero if |key| is NULL or if it doesn't have a group set.
+OPENSSL_EXPORT size_t ECDSA_size(const EC_KEY *key);
+
+
+// Low-level signing and verification.
+//
+// Low-level functions handle signatures as |ECDSA_SIG| structures which allow
+// the two values in an ECDSA signature to be handled separately.
+
+struct ecdsa_sig_st {
+  BIGNUM *r;
+  BIGNUM *s;
+};
+
+// ECDSA_SIG_new returns a fresh |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_new(void);
+
+// ECDSA_SIG_free frees |sig| its member |BIGNUM|s.
+OPENSSL_EXPORT void ECDSA_SIG_free(ECDSA_SIG *sig);
+
+// ECDSA_SIG_get0 sets |*out_r| and |*out_s|, if non-NULL, to the two
+// components of |sig|.
+OPENSSL_EXPORT void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **out_r,
+                                   const BIGNUM **out_s);
+
+// ECDSA_SIG_set0 sets |sig|'s components to |r| and |s|, neither of which may
+// be NULL. On success, it takes ownership of each argument and returns one.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
+
+// ECDSA_do_sign signs |digest_len| bytes from |digest| with |key| and returns
+// the resulting signature structure, or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_do_sign(const uint8_t *digest,
+                                        size_t digest_len, const EC_KEY *key);
+
+// ECDSA_do_verify verifies that |sig| constitutes a valid signature by |key|
+// of |digest|. It returns one on success or zero if the signature is invalid
+// or on error.
+OPENSSL_EXPORT int ECDSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                   const ECDSA_SIG *sig, const EC_KEY *key);
+
+
+// ASN.1 functions.
+
+// ECDSA_SIG_parse parses a DER-encoded ECDSA-Sig-Value structure from |cbs| and
+// advances |cbs|. It returns a newly-allocated |ECDSA_SIG| or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_parse(CBS *cbs);
+
+// ECDSA_SIG_from_bytes parses |in| as a DER-encoded ECDSA-Sig-Value structure.
+// It returns a newly-allocated |ECDSA_SIG| structure or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *ECDSA_SIG_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// ECDSA_SIG_marshal marshals |sig| as a DER-encoded ECDSA-Sig-Value and appends
+// the result to |cbb|. It returns one on success and zero on error.
+OPENSSL_EXPORT int ECDSA_SIG_marshal(CBB *cbb, const ECDSA_SIG *sig);
+
+// ECDSA_SIG_to_bytes marshals |sig| as a DER-encoded ECDSA-Sig-Value and, on
+// success, sets |*out_bytes| to a newly allocated buffer containing the result
+// and returns one. Otherwise, it returns zero. The result should be freed with
+// |OPENSSL_free|.
+OPENSSL_EXPORT int ECDSA_SIG_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                      const ECDSA_SIG *sig);
+
+// ECDSA_SIG_max_len returns the maximum length of a DER-encoded ECDSA-Sig-Value
+// structure for a group whose order is represented in |order_len| bytes, or
+// zero on overflow.
+OPENSSL_EXPORT size_t ECDSA_SIG_max_len(size_t order_len);
+
+
+// Deprecated functions.
+
+// d2i_ECDSA_SIG parses an ASN.1, DER-encoded, signature from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |ECDSA_SIG| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+OPENSSL_EXPORT ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **out, const uint8_t **inp,
+                                        long len);
+
+// i2d_ECDSA_SIG marshals a signature from |sig| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_ECDSA_SIG(const ECDSA_SIG *sig, uint8_t **outp);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ECDSA_SIG, ECDSA_SIG_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ECDSA_R_BAD_SIGNATURE 100
+#define ECDSA_R_MISSING_PARAMETERS 101
+#define ECDSA_R_NEED_NEW_SETUP_VALUES 102
+#define ECDSA_R_NOT_IMPLEMENTED 103
+#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104
+#define ECDSA_R_ENCODE_ERROR 105
+
+#endif  // OPENSSL_HEADER_ECDSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h
new file mode 100644
index 0000000..ce0b354
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h	
@@ -0,0 +1,109 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_ENGINE_H
+#define OPENSSL_HEADER_ENGINE_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Engines are collections of methods. Methods are tables of function pointers,
+// defined for certain algorithms, that allow operations on those algorithms to
+// be overridden via a callback. This can be used, for example, to implement an
+// RSA* that forwards operations to a hardware module.
+//
+// Methods are reference counted but |ENGINE|s are not. When creating a method,
+// you should zero the whole structure and fill in the function pointers that
+// you wish before setting it on an |ENGINE|. Any functions pointers that
+// are NULL indicate that the default behaviour should be used.
+
+
+// Allocation and destruction.
+
+// ENGINE_new returns an empty ENGINE that uses the default method for all
+// algorithms.
+OPENSSL_EXPORT ENGINE *ENGINE_new(void);
+
+// ENGINE_free decrements the reference counts for all methods linked from
+// |engine| and frees |engine| itself. It returns one.
+OPENSSL_EXPORT int ENGINE_free(ENGINE *engine);
+
+
+// Method accessors.
+//
+// Method accessors take a method pointer and the size of the structure. The
+// size allows for ABI compatibility in the case that the method structure is
+// extended with extra elements at the end. Methods are always copied by the
+// set functions.
+//
+// Set functions return one on success and zero on allocation failure.
+
+OPENSSL_EXPORT int ENGINE_set_RSA_method(ENGINE *engine,
+                                         const RSA_METHOD *method,
+                                         size_t method_size);
+OPENSSL_EXPORT RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
+
+OPENSSL_EXPORT int ENGINE_set_ECDSA_method(ENGINE *engine,
+                                           const ECDSA_METHOD *method,
+                                           size_t method_size);
+OPENSSL_EXPORT ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
+
+
+// Generic method functions.
+//
+// These functions take a void* type but actually operate on all method
+// structures.
+
+// METHOD_ref increments the reference count of |method|. This is a no-op for
+// now because all methods are currently static.
+void METHOD_ref(void *method);
+
+// METHOD_unref decrements the reference count of |method| and frees it if the
+// reference count drops to zero. This is a no-op for now because all methods
+// are currently static.
+void METHOD_unref(void *method);
+
+
+// Private functions.
+
+// openssl_method_common_st contains the common part of all method structures.
+// This must be the first member of all method structures.
+struct openssl_method_common_st {
+  int references;  // dummy – not used.
+  char is_static;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ENGINE, ENGINE_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ENGINE_R_OPERATION_NOT_SUPPORTED 100
+
+#endif  // OPENSSL_HEADER_ENGINE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.back
new file mode 100644
index 0000000..ce60de4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.back	
@@ -0,0 +1,109 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_ENGINE_H
+#define OPENSSL_HEADER_ENGINE_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Engines are collections of methods. Methods are tables of function pointers,
+// defined for certain algorithms, that allow operations on those algorithms to
+// be overridden via a callback. This can be used, for example, to implement an
+// RSA* that forwards operations to a hardware module.
+//
+// Methods are reference counted but |ENGINE|s are not. When creating a method,
+// you should zero the whole structure and fill in the function pointers that
+// you wish before setting it on an |ENGINE|. Any functions pointers that
+// are NULL indicate that the default behaviour should be used.
+
+
+// Allocation and destruction.
+
+// ENGINE_new returns an empty ENGINE that uses the default method for all
+// algorithms.
+OPENSSL_EXPORT ENGINE *ENGINE_new(void);
+
+// ENGINE_free decrements the reference counts for all methods linked from
+// |engine| and frees |engine| itself. It returns one.
+OPENSSL_EXPORT int ENGINE_free(ENGINE *engine);
+
+
+// Method accessors.
+//
+// Method accessors take a method pointer and the size of the structure. The
+// size allows for ABI compatibility in the case that the method structure is
+// extended with extra elements at the end. Methods are always copied by the
+// set functions.
+//
+// Set functions return one on success and zero on allocation failure.
+
+OPENSSL_EXPORT int ENGINE_set_RSA_method(ENGINE *engine,
+                                         const RSA_METHOD *method,
+                                         size_t method_size);
+OPENSSL_EXPORT RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
+
+OPENSSL_EXPORT int ENGINE_set_ECDSA_method(ENGINE *engine,
+                                           const ECDSA_METHOD *method,
+                                           size_t method_size);
+OPENSSL_EXPORT ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
+
+
+// Generic method functions.
+//
+// These functions take a void* type but actually operate on all method
+// structures.
+
+// METHOD_ref increments the reference count of |method|. This is a no-op for
+// now because all methods are currently static.
+void METHOD_ref(void *method);
+
+// METHOD_unref decrements the reference count of |method| and frees it if the
+// reference count drops to zero. This is a no-op for now because all methods
+// are currently static.
+void METHOD_unref(void *method);
+
+
+// Private functions.
+
+// openssl_method_common_st contains the common part of all method structures.
+// This must be the first member of all method structures.
+struct openssl_method_common_st {
+  int references;  // dummy – not used.
+  char is_static;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ENGINE, ENGINE_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ENGINE_R_OPERATION_NOT_SUPPORTED 100
+
+#endif  // OPENSSL_HEADER_ENGINE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.grpc_back
new file mode 100644
index 0000000..ce60de4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/engine.h.grpc_back	
@@ -0,0 +1,109 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_ENGINE_H
+#define OPENSSL_HEADER_ENGINE_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Engines are collections of methods. Methods are tables of function pointers,
+// defined for certain algorithms, that allow operations on those algorithms to
+// be overridden via a callback. This can be used, for example, to implement an
+// RSA* that forwards operations to a hardware module.
+//
+// Methods are reference counted but |ENGINE|s are not. When creating a method,
+// you should zero the whole structure and fill in the function pointers that
+// you wish before setting it on an |ENGINE|. Any functions pointers that
+// are NULL indicate that the default behaviour should be used.
+
+
+// Allocation and destruction.
+
+// ENGINE_new returns an empty ENGINE that uses the default method for all
+// algorithms.
+OPENSSL_EXPORT ENGINE *ENGINE_new(void);
+
+// ENGINE_free decrements the reference counts for all methods linked from
+// |engine| and frees |engine| itself. It returns one.
+OPENSSL_EXPORT int ENGINE_free(ENGINE *engine);
+
+
+// Method accessors.
+//
+// Method accessors take a method pointer and the size of the structure. The
+// size allows for ABI compatibility in the case that the method structure is
+// extended with extra elements at the end. Methods are always copied by the
+// set functions.
+//
+// Set functions return one on success and zero on allocation failure.
+
+OPENSSL_EXPORT int ENGINE_set_RSA_method(ENGINE *engine,
+                                         const RSA_METHOD *method,
+                                         size_t method_size);
+OPENSSL_EXPORT RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
+
+OPENSSL_EXPORT int ENGINE_set_ECDSA_method(ENGINE *engine,
+                                           const ECDSA_METHOD *method,
+                                           size_t method_size);
+OPENSSL_EXPORT ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
+
+
+// Generic method functions.
+//
+// These functions take a void* type but actually operate on all method
+// structures.
+
+// METHOD_ref increments the reference count of |method|. This is a no-op for
+// now because all methods are currently static.
+void METHOD_ref(void *method);
+
+// METHOD_unref decrements the reference count of |method| and frees it if the
+// reference count drops to zero. This is a no-op for now because all methods
+// are currently static.
+void METHOD_unref(void *method);
+
+
+// Private functions.
+
+// openssl_method_common_st contains the common part of all method structures.
+// This must be the first member of all method structures.
+struct openssl_method_common_st {
+  int references;  // dummy – not used.
+  char is_static;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ENGINE, ENGINE_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define ENGINE_R_OPERATION_NOT_SUPPORTED 100
+
+#endif  // OPENSSL_HEADER_ENGINE_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h
new file mode 100644
index 0000000..7da1fdd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h	
@@ -0,0 +1,463 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ERR_H
+#define OPENSSL_HEADER_ERR_H
+
+#include <stdio.h>
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Error queue handling functions.
+//
+// Errors in OpenSSL are generally signaled by the return value of a function.
+// When a function fails it may add an entry to a per-thread error queue,
+// which is managed by the functions in this header.
+//
+// Each error contains:
+//   1) The library (i.e. ec, pem, rsa) which created it.
+//   2) The file and line number of the call that added the error.
+//   3) A pointer to some error specific data, which may be NULL.
+//
+// The library identifier and reason code are packed in a uint32_t and there
+// exist various functions for unpacking it.
+//
+// The typical behaviour is that an error will occur deep in a call queue and
+// that code will push an error onto the error queue. As the error queue
+// unwinds, other functions will push their own errors. Thus, the "least
+// recent" error is the most specific and the other errors will provide a
+// backtrace of sorts.
+
+
+// Startup and shutdown.
+
+// ERR_load_BIO_strings does nothing.
+//
+// TODO(fork): remove. libjingle calls this.
+OPENSSL_EXPORT void ERR_load_BIO_strings(void);
+
+// ERR_load_ERR_strings does nothing.
+OPENSSL_EXPORT void ERR_load_ERR_strings(void);
+
+// ERR_load_crypto_strings does nothing.
+OPENSSL_EXPORT void ERR_load_crypto_strings(void);
+
+// ERR_load_RAND_strings does nothing.
+OPENSSL_EXPORT void ERR_load_RAND_strings(void);
+
+// ERR_free_strings does nothing.
+OPENSSL_EXPORT void ERR_free_strings(void);
+
+
+// Reading and formatting errors.
+
+// ERR_GET_LIB returns the library code for the error. This is one of
+// the |ERR_LIB_*| values.
+#define ERR_GET_LIB(packed_error) ((int)(((packed_error) >> 24) & 0xff))
+
+// ERR_GET_REASON returns the reason code for the error. This is one of
+// library-specific |LIB_R_*| values where |LIB| is the library (see
+// |ERR_GET_LIB|). Note that reason codes are specific to the library.
+#define ERR_GET_REASON(packed_error) ((int)((packed_error) & 0xfff))
+
+// ERR_get_error gets the packed error code for the least recent error and
+// removes that error from the queue. If there are no errors in the queue then
+// it returns zero.
+OPENSSL_EXPORT uint32_t ERR_get_error(void);
+
+// ERR_get_error_line acts like |ERR_get_error|, except that the file and line
+// number of the call that added the error are also returned.
+OPENSSL_EXPORT uint32_t ERR_get_error_line(const char **file, int *line);
+
+// ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that
+// can be printed. This is always set if |data| is non-NULL.
+#define ERR_FLAG_STRING 1
+
+// ERR_get_error_line_data acts like |ERR_get_error_line|, but also returns the
+// error-specific data pointer and flags. The flags are a bitwise-OR of
+// |ERR_FLAG_*| values. The error-specific data is owned by the error queue
+// and the pointer becomes invalid after the next call that affects the same
+// thread's error queue. If |*flags| contains |ERR_FLAG_STRING| then |*data| is
+// human-readable.
+OPENSSL_EXPORT uint32_t ERR_get_error_line_data(const char **file, int *line,
+                                                const char **data, int *flags);
+
+// The "peek" functions act like the |ERR_get_error| functions, above, but they
+// do not remove the error from the queue.
+OPENSSL_EXPORT uint32_t ERR_peek_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line_data(const char **file, int *line,
+                                                 const char **data, int *flags);
+
+// The "peek last" functions act like the "peek" functions, above, except that
+// they return the most recent error.
+OPENSSL_EXPORT uint32_t ERR_peek_last_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line_data(const char **file,
+                                                      int *line,
+                                                      const char **data,
+                                                      int *flags);
+
+// ERR_error_string_n generates a human-readable string representing
+// |packed_error|, places it at |buf|, and returns |buf|. It writes at most
+// |len| bytes (including the terminating NUL) and truncates the string if
+// necessary. If |len| is greater than zero then |buf| is always NUL terminated.
+//
+// The string will have the following format:
+//
+//   error:[error code]:[library name]:OPENSSL_internal:[reason string]
+//
+// error code is an 8 digit hexadecimal number; library name and reason string
+// are ASCII text.
+OPENSSL_EXPORT char *ERR_error_string_n(uint32_t packed_error, char *buf,
+                                        size_t len);
+
+// ERR_lib_error_string returns a string representation of the library that
+// generated |packed_error|.
+OPENSSL_EXPORT const char *ERR_lib_error_string(uint32_t packed_error);
+
+// ERR_reason_error_string returns a string representation of the reason for
+// |packed_error|.
+OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error);
+
+// ERR_print_errors_callback_t is the type of a function used by
+// |ERR_print_errors_cb|. It takes a pointer to a human readable string (and
+// its length) that describes an entry in the error queue. The |ctx| argument
+// is an opaque pointer given to |ERR_print_errors_cb|.
+//
+// It should return one on success or zero on error, which will stop the
+// iteration over the error queue.
+typedef int (*ERR_print_errors_callback_t)(const char *str, size_t len,
+                                           void *ctx);
+
+// ERR_print_errors_cb clears the current thread's error queue, calling
+// |callback| with a string representation of each error, from the least recent
+// to the most recent error.
+//
+// The string will have the following format (which differs from
+// |ERR_error_string|):
+//
+//   [thread id]:error:[error code]:[library name]:OPENSSL_internal:[reason string]:[file]:[line number]:[optional string data]
+//
+// The callback can return one to continue the iteration or zero to stop it.
+// The |ctx| argument is an opaque value that is passed through to the
+// callback.
+OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback,
+                                        void *ctx);
+
+// ERR_print_errors_fp clears the current thread's error queue, printing each
+// error to |file|. See |ERR_print_errors_cb| for the format.
+OPENSSL_EXPORT void ERR_print_errors_fp(FILE *file);
+
+
+// Clearing errors.
+
+// ERR_clear_error clears the error queue for the current thread.
+OPENSSL_EXPORT void ERR_clear_error(void);
+
+// ERR_set_mark "marks" the most recent error for use with |ERR_pop_to_mark|.
+// It returns one if an error was marked and zero if there are no errors.
+OPENSSL_EXPORT int ERR_set_mark(void);
+
+// ERR_pop_to_mark removes errors from the most recent to the least recent
+// until (and not including) a "marked" error. It returns zero if no marked
+// error was found (and thus all errors were removed) and one otherwise. Errors
+// are marked using |ERR_set_mark|.
+OPENSSL_EXPORT int ERR_pop_to_mark(void);
+
+
+// Custom errors.
+
+// ERR_get_next_error_library returns a value suitable for passing as the
+// |library| argument to |ERR_put_error|. This is intended for code that wishes
+// to push its own, non-standard errors to the error queue.
+OPENSSL_EXPORT int ERR_get_next_error_library(void);
+
+
+// Built-in library and reason codes.
+
+// The following values are built-in library codes.
+enum {
+  ERR_LIB_NONE = 1,
+  ERR_LIB_SYS,
+  ERR_LIB_BN,
+  ERR_LIB_RSA,
+  ERR_LIB_DH,
+  ERR_LIB_EVP,
+  ERR_LIB_BUF,
+  ERR_LIB_OBJ,
+  ERR_LIB_PEM,
+  ERR_LIB_DSA,
+  ERR_LIB_X509,
+  ERR_LIB_ASN1,
+  ERR_LIB_CONF,
+  ERR_LIB_CRYPTO,
+  ERR_LIB_EC,
+  ERR_LIB_SSL,
+  ERR_LIB_BIO,
+  ERR_LIB_PKCS7,
+  ERR_LIB_PKCS8,
+  ERR_LIB_X509V3,
+  ERR_LIB_RAND,
+  ERR_LIB_ENGINE,
+  ERR_LIB_OCSP,
+  ERR_LIB_UI,
+  ERR_LIB_COMP,
+  ERR_LIB_ECDSA,
+  ERR_LIB_ECDH,
+  ERR_LIB_HMAC,
+  ERR_LIB_DIGEST,
+  ERR_LIB_CIPHER,
+  ERR_LIB_HKDF,
+  ERR_LIB_USER,
+  ERR_NUM_LIBS
+};
+
+// The following reason codes used to denote an error occuring in another
+// library. They are sometimes used for a stack trace.
+#define ERR_R_SYS_LIB ERR_LIB_SYS
+#define ERR_R_BN_LIB ERR_LIB_BN
+#define ERR_R_RSA_LIB ERR_LIB_RSA
+#define ERR_R_DH_LIB ERR_LIB_DH
+#define ERR_R_EVP_LIB ERR_LIB_EVP
+#define ERR_R_BUF_LIB ERR_LIB_BUF
+#define ERR_R_OBJ_LIB ERR_LIB_OBJ
+#define ERR_R_PEM_LIB ERR_LIB_PEM
+#define ERR_R_DSA_LIB ERR_LIB_DSA
+#define ERR_R_X509_LIB ERR_LIB_X509
+#define ERR_R_ASN1_LIB ERR_LIB_ASN1
+#define ERR_R_CONF_LIB ERR_LIB_CONF
+#define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO
+#define ERR_R_EC_LIB ERR_LIB_EC
+#define ERR_R_SSL_LIB ERR_LIB_SSL
+#define ERR_R_BIO_LIB ERR_LIB_BIO
+#define ERR_R_PKCS7_LIB ERR_LIB_PKCS7
+#define ERR_R_PKCS8_LIB ERR_LIB_PKCS8
+#define ERR_R_X509V3_LIB ERR_LIB_X509V3
+#define ERR_R_RAND_LIB ERR_LIB_RAND
+#define ERR_R_DSO_LIB ERR_LIB_DSO
+#define ERR_R_ENGINE_LIB ERR_LIB_ENGINE
+#define ERR_R_OCSP_LIB ERR_LIB_OCSP
+#define ERR_R_UI_LIB ERR_LIB_UI
+#define ERR_R_COMP_LIB ERR_LIB_COMP
+#define ERR_R_ECDSA_LIB ERR_LIB_ECDSA
+#define ERR_R_ECDH_LIB ERR_LIB_ECDH
+#define ERR_R_STORE_LIB ERR_LIB_STORE
+#define ERR_R_FIPS_LIB ERR_LIB_FIPS
+#define ERR_R_CMS_LIB ERR_LIB_CMS
+#define ERR_R_TS_LIB ERR_LIB_TS
+#define ERR_R_HMAC_LIB ERR_LIB_HMAC
+#define ERR_R_JPAKE_LIB ERR_LIB_JPAKE
+#define ERR_R_USER_LIB ERR_LIB_USER
+#define ERR_R_DIGEST_LIB ERR_LIB_DIGEST
+#define ERR_R_CIPHER_LIB ERR_LIB_CIPHER
+#define ERR_R_HKDF_LIB ERR_LIB_HKDF
+
+// The following values are global reason codes. They may occur in any library.
+#define ERR_R_FATAL 64
+#define ERR_R_MALLOC_FAILURE (1 | ERR_R_FATAL)
+#define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2 | ERR_R_FATAL)
+#define ERR_R_PASSED_NULL_PARAMETER (3 | ERR_R_FATAL)
+#define ERR_R_INTERNAL_ERROR (4 | ERR_R_FATAL)
+#define ERR_R_OVERFLOW (5 | ERR_R_FATAL)
+
+
+// Deprecated functions.
+
+// ERR_remove_state calls |ERR_clear_error|.
+OPENSSL_EXPORT void ERR_remove_state(unsigned long pid);
+
+// ERR_remove_thread_state clears the error queue for the current thread if
+// |tid| is NULL. Otherwise it calls |assert(0)|, because it's no longer
+// possible to delete the error queue for other threads.
+//
+// Use |ERR_clear_error| instead. Note error queues are deleted automatically on
+// thread exit. You do not need to call this function to release memory.
+OPENSSL_EXPORT void ERR_remove_thread_state(const CRYPTO_THREADID *tid);
+
+// ERR_func_error_string returns the string "OPENSSL_internal".
+OPENSSL_EXPORT const char *ERR_func_error_string(uint32_t packed_error);
+
+// ERR_error_string behaves like |ERR_error_string_n| but |len| is implicitly
+// |ERR_ERROR_STRING_BUF_LEN|.
+//
+// Additionally, if |buf| is NULL, the error string is placed in a static buffer
+// which is returned. This is not thread-safe and only exists for backwards
+// compatibility with legacy callers. The static buffer will be overridden by
+// calls in other threads.
+//
+// Use |ERR_error_string_n| instead.
+//
+// TODO(fork): remove this function.
+OPENSSL_EXPORT char *ERR_error_string(uint32_t packed_error, char *buf);
+#define ERR_ERROR_STRING_BUF_LEN 120
+
+// ERR_GET_FUNC returns zero. BoringSSL errors do not report a function code.
+#define ERR_GET_FUNC(packed_error) 0
+
+// ERR_TXT_STRING is provided for compatibility with code that assumes that
+// it's using OpenSSL.
+#define ERR_TXT_STRING ERR_FLAG_STRING
+
+
+// Private functions.
+
+// ERR_clear_system_error clears the system's error value (i.e. errno).
+OPENSSL_EXPORT void ERR_clear_system_error(void);
+
+// OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error
+// queue.
+#define OPENSSL_PUT_ERROR(library, reason) \
+  ERR_put_error(ERR_LIB_##library, 0, reason, __FILE__, __LINE__)
+
+// OPENSSL_PUT_SYSTEM_ERROR is used by OpenSSL code to add an error from the
+// operating system to the error queue.
+// TODO(fork): include errno.
+#define OPENSSL_PUT_SYSTEM_ERROR() \
+  ERR_put_error(ERR_LIB_SYS, 0, 0, __FILE__, __LINE__);
+
+// ERR_put_error adds an error to the error queue, dropping the least recent
+// error if necessary for space reasons.
+OPENSSL_EXPORT void ERR_put_error(int library, int unused, int reason,
+                                  const char *file, unsigned line);
+
+// ERR_add_error_data takes a variable number (|count|) of const char*
+// pointers, concatenates them and sets the result as the data on the most
+// recent error.
+OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...);
+
+// ERR_add_error_dataf takes a printf-style format and arguments, and sets the
+// result as the data on the most recent error.
+OPENSSL_EXPORT void ERR_add_error_dataf(const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(1, 2);
+
+// ERR_NUM_ERRORS is one more than the limit of the number of errors in the
+// queue.
+#define ERR_NUM_ERRORS 16
+
+#define ERR_PACK(lib, reason)                                              \
+  (((((uint32_t)(lib)) & 0xff) << 24) | ((((uint32_t)(reason)) & 0xfff)))
+
+// OPENSSL_DECLARE_ERROR_REASON is used by util/make_errors.h (which generates
+// the error defines) to recognise that an additional reason value is needed.
+// This is needed when the reason value is used outside of an
+// |OPENSSL_PUT_ERROR| macro. The resulting define will be
+// ${lib}_R_${reason}.
+#define OPENSSL_DECLARE_ERROR_REASON(lib, reason)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_ERR_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.back
new file mode 100644
index 0000000..f9cd9f2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.back	
@@ -0,0 +1,463 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ERR_H
+#define OPENSSL_HEADER_ERR_H
+
+#include <stdio.h>
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Error queue handling functions.
+//
+// Errors in OpenSSL are generally signaled by the return value of a function.
+// When a function fails it may add an entry to a per-thread error queue,
+// which is managed by the functions in this header.
+//
+// Each error contains:
+//   1) The library (i.e. ec, pem, rsa) which created it.
+//   2) The file and line number of the call that added the error.
+//   3) A pointer to some error specific data, which may be NULL.
+//
+// The library identifier and reason code are packed in a uint32_t and there
+// exist various functions for unpacking it.
+//
+// The typical behaviour is that an error will occur deep in a call queue and
+// that code will push an error onto the error queue. As the error queue
+// unwinds, other functions will push their own errors. Thus, the "least
+// recent" error is the most specific and the other errors will provide a
+// backtrace of sorts.
+
+
+// Startup and shutdown.
+
+// ERR_load_BIO_strings does nothing.
+//
+// TODO(fork): remove. libjingle calls this.
+OPENSSL_EXPORT void ERR_load_BIO_strings(void);
+
+// ERR_load_ERR_strings does nothing.
+OPENSSL_EXPORT void ERR_load_ERR_strings(void);
+
+// ERR_load_crypto_strings does nothing.
+OPENSSL_EXPORT void ERR_load_crypto_strings(void);
+
+// ERR_load_RAND_strings does nothing.
+OPENSSL_EXPORT void ERR_load_RAND_strings(void);
+
+// ERR_free_strings does nothing.
+OPENSSL_EXPORT void ERR_free_strings(void);
+
+
+// Reading and formatting errors.
+
+// ERR_GET_LIB returns the library code for the error. This is one of
+// the |ERR_LIB_*| values.
+#define ERR_GET_LIB(packed_error) ((int)(((packed_error) >> 24) & 0xff))
+
+// ERR_GET_REASON returns the reason code for the error. This is one of
+// library-specific |LIB_R_*| values where |LIB| is the library (see
+// |ERR_GET_LIB|). Note that reason codes are specific to the library.
+#define ERR_GET_REASON(packed_error) ((int)((packed_error) & 0xfff))
+
+// ERR_get_error gets the packed error code for the least recent error and
+// removes that error from the queue. If there are no errors in the queue then
+// it returns zero.
+OPENSSL_EXPORT uint32_t ERR_get_error(void);
+
+// ERR_get_error_line acts like |ERR_get_error|, except that the file and line
+// number of the call that added the error are also returned.
+OPENSSL_EXPORT uint32_t ERR_get_error_line(const char **file, int *line);
+
+// ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that
+// can be printed. This is always set if |data| is non-NULL.
+#define ERR_FLAG_STRING 1
+
+// ERR_get_error_line_data acts like |ERR_get_error_line|, but also returns the
+// error-specific data pointer and flags. The flags are a bitwise-OR of
+// |ERR_FLAG_*| values. The error-specific data is owned by the error queue
+// and the pointer becomes invalid after the next call that affects the same
+// thread's error queue. If |*flags| contains |ERR_FLAG_STRING| then |*data| is
+// human-readable.
+OPENSSL_EXPORT uint32_t ERR_get_error_line_data(const char **file, int *line,
+                                                const char **data, int *flags);
+
+// The "peek" functions act like the |ERR_get_error| functions, above, but they
+// do not remove the error from the queue.
+OPENSSL_EXPORT uint32_t ERR_peek_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line_data(const char **file, int *line,
+                                                 const char **data, int *flags);
+
+// The "peek last" functions act like the "peek" functions, above, except that
+// they return the most recent error.
+OPENSSL_EXPORT uint32_t ERR_peek_last_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line_data(const char **file,
+                                                      int *line,
+                                                      const char **data,
+                                                      int *flags);
+
+// ERR_error_string_n generates a human-readable string representing
+// |packed_error|, places it at |buf|, and returns |buf|. It writes at most
+// |len| bytes (including the terminating NUL) and truncates the string if
+// necessary. If |len| is greater than zero then |buf| is always NUL terminated.
+//
+// The string will have the following format:
+//
+//   error:[error code]:[library name]:OPENSSL_internal:[reason string]
+//
+// error code is an 8 digit hexadecimal number; library name and reason string
+// are ASCII text.
+OPENSSL_EXPORT char *ERR_error_string_n(uint32_t packed_error, char *buf,
+                                        size_t len);
+
+// ERR_lib_error_string returns a string representation of the library that
+// generated |packed_error|.
+OPENSSL_EXPORT const char *ERR_lib_error_string(uint32_t packed_error);
+
+// ERR_reason_error_string returns a string representation of the reason for
+// |packed_error|.
+OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error);
+
+// ERR_print_errors_callback_t is the type of a function used by
+// |ERR_print_errors_cb|. It takes a pointer to a human readable string (and
+// its length) that describes an entry in the error queue. The |ctx| argument
+// is an opaque pointer given to |ERR_print_errors_cb|.
+//
+// It should return one on success or zero on error, which will stop the
+// iteration over the error queue.
+typedef int (*ERR_print_errors_callback_t)(const char *str, size_t len,
+                                           void *ctx);
+
+// ERR_print_errors_cb clears the current thread's error queue, calling
+// |callback| with a string representation of each error, from the least recent
+// to the most recent error.
+//
+// The string will have the following format (which differs from
+// |ERR_error_string|):
+//
+//   [thread id]:error:[error code]:[library name]:OPENSSL_internal:[reason string]:[file]:[line number]:[optional string data]
+//
+// The callback can return one to continue the iteration or zero to stop it.
+// The |ctx| argument is an opaque value that is passed through to the
+// callback.
+OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback,
+                                        void *ctx);
+
+// ERR_print_errors_fp clears the current thread's error queue, printing each
+// error to |file|. See |ERR_print_errors_cb| for the format.
+OPENSSL_EXPORT void ERR_print_errors_fp(FILE *file);
+
+
+// Clearing errors.
+
+// ERR_clear_error clears the error queue for the current thread.
+OPENSSL_EXPORT void ERR_clear_error(void);
+
+// ERR_set_mark "marks" the most recent error for use with |ERR_pop_to_mark|.
+// It returns one if an error was marked and zero if there are no errors.
+OPENSSL_EXPORT int ERR_set_mark(void);
+
+// ERR_pop_to_mark removes errors from the most recent to the least recent
+// until (and not including) a "marked" error. It returns zero if no marked
+// error was found (and thus all errors were removed) and one otherwise. Errors
+// are marked using |ERR_set_mark|.
+OPENSSL_EXPORT int ERR_pop_to_mark(void);
+
+
+// Custom errors.
+
+// ERR_get_next_error_library returns a value suitable for passing as the
+// |library| argument to |ERR_put_error|. This is intended for code that wishes
+// to push its own, non-standard errors to the error queue.
+OPENSSL_EXPORT int ERR_get_next_error_library(void);
+
+
+// Built-in library and reason codes.
+
+// The following values are built-in library codes.
+enum {
+  ERR_LIB_NONE = 1,
+  ERR_LIB_SYS,
+  ERR_LIB_BN,
+  ERR_LIB_RSA,
+  ERR_LIB_DH,
+  ERR_LIB_EVP,
+  ERR_LIB_BUF,
+  ERR_LIB_OBJ,
+  ERR_LIB_PEM,
+  ERR_LIB_DSA,
+  ERR_LIB_X509,
+  ERR_LIB_ASN1,
+  ERR_LIB_CONF,
+  ERR_LIB_CRYPTO,
+  ERR_LIB_EC,
+  ERR_LIB_SSL,
+  ERR_LIB_BIO,
+  ERR_LIB_PKCS7,
+  ERR_LIB_PKCS8,
+  ERR_LIB_X509V3,
+  ERR_LIB_RAND,
+  ERR_LIB_ENGINE,
+  ERR_LIB_OCSP,
+  ERR_LIB_UI,
+  ERR_LIB_COMP,
+  ERR_LIB_ECDSA,
+  ERR_LIB_ECDH,
+  ERR_LIB_HMAC,
+  ERR_LIB_DIGEST,
+  ERR_LIB_CIPHER,
+  ERR_LIB_HKDF,
+  ERR_LIB_USER,
+  ERR_NUM_LIBS
+};
+
+// The following reason codes used to denote an error occuring in another
+// library. They are sometimes used for a stack trace.
+#define ERR_R_SYS_LIB ERR_LIB_SYS
+#define ERR_R_BN_LIB ERR_LIB_BN
+#define ERR_R_RSA_LIB ERR_LIB_RSA
+#define ERR_R_DH_LIB ERR_LIB_DH
+#define ERR_R_EVP_LIB ERR_LIB_EVP
+#define ERR_R_BUF_LIB ERR_LIB_BUF
+#define ERR_R_OBJ_LIB ERR_LIB_OBJ
+#define ERR_R_PEM_LIB ERR_LIB_PEM
+#define ERR_R_DSA_LIB ERR_LIB_DSA
+#define ERR_R_X509_LIB ERR_LIB_X509
+#define ERR_R_ASN1_LIB ERR_LIB_ASN1
+#define ERR_R_CONF_LIB ERR_LIB_CONF
+#define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO
+#define ERR_R_EC_LIB ERR_LIB_EC
+#define ERR_R_SSL_LIB ERR_LIB_SSL
+#define ERR_R_BIO_LIB ERR_LIB_BIO
+#define ERR_R_PKCS7_LIB ERR_LIB_PKCS7
+#define ERR_R_PKCS8_LIB ERR_LIB_PKCS8
+#define ERR_R_X509V3_LIB ERR_LIB_X509V3
+#define ERR_R_RAND_LIB ERR_LIB_RAND
+#define ERR_R_DSO_LIB ERR_LIB_DSO
+#define ERR_R_ENGINE_LIB ERR_LIB_ENGINE
+#define ERR_R_OCSP_LIB ERR_LIB_OCSP
+#define ERR_R_UI_LIB ERR_LIB_UI
+#define ERR_R_COMP_LIB ERR_LIB_COMP
+#define ERR_R_ECDSA_LIB ERR_LIB_ECDSA
+#define ERR_R_ECDH_LIB ERR_LIB_ECDH
+#define ERR_R_STORE_LIB ERR_LIB_STORE
+#define ERR_R_FIPS_LIB ERR_LIB_FIPS
+#define ERR_R_CMS_LIB ERR_LIB_CMS
+#define ERR_R_TS_LIB ERR_LIB_TS
+#define ERR_R_HMAC_LIB ERR_LIB_HMAC
+#define ERR_R_JPAKE_LIB ERR_LIB_JPAKE
+#define ERR_R_USER_LIB ERR_LIB_USER
+#define ERR_R_DIGEST_LIB ERR_LIB_DIGEST
+#define ERR_R_CIPHER_LIB ERR_LIB_CIPHER
+#define ERR_R_HKDF_LIB ERR_LIB_HKDF
+
+// The following values are global reason codes. They may occur in any library.
+#define ERR_R_FATAL 64
+#define ERR_R_MALLOC_FAILURE (1 | ERR_R_FATAL)
+#define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2 | ERR_R_FATAL)
+#define ERR_R_PASSED_NULL_PARAMETER (3 | ERR_R_FATAL)
+#define ERR_R_INTERNAL_ERROR (4 | ERR_R_FATAL)
+#define ERR_R_OVERFLOW (5 | ERR_R_FATAL)
+
+
+// Deprecated functions.
+
+// ERR_remove_state calls |ERR_clear_error|.
+OPENSSL_EXPORT void ERR_remove_state(unsigned long pid);
+
+// ERR_remove_thread_state clears the error queue for the current thread if
+// |tid| is NULL. Otherwise it calls |assert(0)|, because it's no longer
+// possible to delete the error queue for other threads.
+//
+// Use |ERR_clear_error| instead. Note error queues are deleted automatically on
+// thread exit. You do not need to call this function to release memory.
+OPENSSL_EXPORT void ERR_remove_thread_state(const CRYPTO_THREADID *tid);
+
+// ERR_func_error_string returns the string "OPENSSL_internal".
+OPENSSL_EXPORT const char *ERR_func_error_string(uint32_t packed_error);
+
+// ERR_error_string behaves like |ERR_error_string_n| but |len| is implicitly
+// |ERR_ERROR_STRING_BUF_LEN|.
+//
+// Additionally, if |buf| is NULL, the error string is placed in a static buffer
+// which is returned. This is not thread-safe and only exists for backwards
+// compatibility with legacy callers. The static buffer will be overridden by
+// calls in other threads.
+//
+// Use |ERR_error_string_n| instead.
+//
+// TODO(fork): remove this function.
+OPENSSL_EXPORT char *ERR_error_string(uint32_t packed_error, char *buf);
+#define ERR_ERROR_STRING_BUF_LEN 120
+
+// ERR_GET_FUNC returns zero. BoringSSL errors do not report a function code.
+#define ERR_GET_FUNC(packed_error) 0
+
+// ERR_TXT_STRING is provided for compatibility with code that assumes that
+// it's using OpenSSL.
+#define ERR_TXT_STRING ERR_FLAG_STRING
+
+
+// Private functions.
+
+// ERR_clear_system_error clears the system's error value (i.e. errno).
+OPENSSL_EXPORT void ERR_clear_system_error(void);
+
+// OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error
+// queue.
+#define OPENSSL_PUT_ERROR(library, reason) \
+  ERR_put_error(ERR_LIB_##library, 0, reason, __FILE__, __LINE__)
+
+// OPENSSL_PUT_SYSTEM_ERROR is used by OpenSSL code to add an error from the
+// operating system to the error queue.
+// TODO(fork): include errno.
+#define OPENSSL_PUT_SYSTEM_ERROR() \
+  ERR_put_error(ERR_LIB_SYS, 0, 0, __FILE__, __LINE__);
+
+// ERR_put_error adds an error to the error queue, dropping the least recent
+// error if necessary for space reasons.
+OPENSSL_EXPORT void ERR_put_error(int library, int unused, int reason,
+                                  const char *file, unsigned line);
+
+// ERR_add_error_data takes a variable number (|count|) of const char*
+// pointers, concatenates them and sets the result as the data on the most
+// recent error.
+OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...);
+
+// ERR_add_error_dataf takes a printf-style format and arguments, and sets the
+// result as the data on the most recent error.
+OPENSSL_EXPORT void ERR_add_error_dataf(const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(1, 2);
+
+// ERR_NUM_ERRORS is one more than the limit of the number of errors in the
+// queue.
+#define ERR_NUM_ERRORS 16
+
+#define ERR_PACK(lib, reason)                                              \
+  (((((uint32_t)(lib)) & 0xff) << 24) | ((((uint32_t)(reason)) & 0xfff)))
+
+// OPENSSL_DECLARE_ERROR_REASON is used by util/make_errors.h (which generates
+// the error defines) to recognise that an additional reason value is needed.
+// This is needed when the reason value is used outside of an
+// |OPENSSL_PUT_ERROR| macro. The resulting define will be
+// ${lib}_R_${reason}.
+#define OPENSSL_DECLARE_ERROR_REASON(lib, reason)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_ERR_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.grpc_back
new file mode 100644
index 0000000..f9cd9f2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/err.h.grpc_back	
@@ -0,0 +1,463 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ERR_H
+#define OPENSSL_HEADER_ERR_H
+
+#include <stdio.h>
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Error queue handling functions.
+//
+// Errors in OpenSSL are generally signaled by the return value of a function.
+// When a function fails it may add an entry to a per-thread error queue,
+// which is managed by the functions in this header.
+//
+// Each error contains:
+//   1) The library (i.e. ec, pem, rsa) which created it.
+//   2) The file and line number of the call that added the error.
+//   3) A pointer to some error specific data, which may be NULL.
+//
+// The library identifier and reason code are packed in a uint32_t and there
+// exist various functions for unpacking it.
+//
+// The typical behaviour is that an error will occur deep in a call queue and
+// that code will push an error onto the error queue. As the error queue
+// unwinds, other functions will push their own errors. Thus, the "least
+// recent" error is the most specific and the other errors will provide a
+// backtrace of sorts.
+
+
+// Startup and shutdown.
+
+// ERR_load_BIO_strings does nothing.
+//
+// TODO(fork): remove. libjingle calls this.
+OPENSSL_EXPORT void ERR_load_BIO_strings(void);
+
+// ERR_load_ERR_strings does nothing.
+OPENSSL_EXPORT void ERR_load_ERR_strings(void);
+
+// ERR_load_crypto_strings does nothing.
+OPENSSL_EXPORT void ERR_load_crypto_strings(void);
+
+// ERR_load_RAND_strings does nothing.
+OPENSSL_EXPORT void ERR_load_RAND_strings(void);
+
+// ERR_free_strings does nothing.
+OPENSSL_EXPORT void ERR_free_strings(void);
+
+
+// Reading and formatting errors.
+
+// ERR_GET_LIB returns the library code for the error. This is one of
+// the |ERR_LIB_*| values.
+#define ERR_GET_LIB(packed_error) ((int)(((packed_error) >> 24) & 0xff))
+
+// ERR_GET_REASON returns the reason code for the error. This is one of
+// library-specific |LIB_R_*| values where |LIB| is the library (see
+// |ERR_GET_LIB|). Note that reason codes are specific to the library.
+#define ERR_GET_REASON(packed_error) ((int)((packed_error) & 0xfff))
+
+// ERR_get_error gets the packed error code for the least recent error and
+// removes that error from the queue. If there are no errors in the queue then
+// it returns zero.
+OPENSSL_EXPORT uint32_t ERR_get_error(void);
+
+// ERR_get_error_line acts like |ERR_get_error|, except that the file and line
+// number of the call that added the error are also returned.
+OPENSSL_EXPORT uint32_t ERR_get_error_line(const char **file, int *line);
+
+// ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that
+// can be printed. This is always set if |data| is non-NULL.
+#define ERR_FLAG_STRING 1
+
+// ERR_get_error_line_data acts like |ERR_get_error_line|, but also returns the
+// error-specific data pointer and flags. The flags are a bitwise-OR of
+// |ERR_FLAG_*| values. The error-specific data is owned by the error queue
+// and the pointer becomes invalid after the next call that affects the same
+// thread's error queue. If |*flags| contains |ERR_FLAG_STRING| then |*data| is
+// human-readable.
+OPENSSL_EXPORT uint32_t ERR_get_error_line_data(const char **file, int *line,
+                                                const char **data, int *flags);
+
+// The "peek" functions act like the |ERR_get_error| functions, above, but they
+// do not remove the error from the queue.
+OPENSSL_EXPORT uint32_t ERR_peek_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line_data(const char **file, int *line,
+                                                 const char **data, int *flags);
+
+// The "peek last" functions act like the "peek" functions, above, except that
+// they return the most recent error.
+OPENSSL_EXPORT uint32_t ERR_peek_last_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line_data(const char **file,
+                                                      int *line,
+                                                      const char **data,
+                                                      int *flags);
+
+// ERR_error_string_n generates a human-readable string representing
+// |packed_error|, places it at |buf|, and returns |buf|. It writes at most
+// |len| bytes (including the terminating NUL) and truncates the string if
+// necessary. If |len| is greater than zero then |buf| is always NUL terminated.
+//
+// The string will have the following format:
+//
+//   error:[error code]:[library name]:OPENSSL_internal:[reason string]
+//
+// error code is an 8 digit hexadecimal number; library name and reason string
+// are ASCII text.
+OPENSSL_EXPORT char *ERR_error_string_n(uint32_t packed_error, char *buf,
+                                        size_t len);
+
+// ERR_lib_error_string returns a string representation of the library that
+// generated |packed_error|.
+OPENSSL_EXPORT const char *ERR_lib_error_string(uint32_t packed_error);
+
+// ERR_reason_error_string returns a string representation of the reason for
+// |packed_error|.
+OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error);
+
+// ERR_print_errors_callback_t is the type of a function used by
+// |ERR_print_errors_cb|. It takes a pointer to a human readable string (and
+// its length) that describes an entry in the error queue. The |ctx| argument
+// is an opaque pointer given to |ERR_print_errors_cb|.
+//
+// It should return one on success or zero on error, which will stop the
+// iteration over the error queue.
+typedef int (*ERR_print_errors_callback_t)(const char *str, size_t len,
+                                           void *ctx);
+
+// ERR_print_errors_cb clears the current thread's error queue, calling
+// |callback| with a string representation of each error, from the least recent
+// to the most recent error.
+//
+// The string will have the following format (which differs from
+// |ERR_error_string|):
+//
+//   [thread id]:error:[error code]:[library name]:OPENSSL_internal:[reason string]:[file]:[line number]:[optional string data]
+//
+// The callback can return one to continue the iteration or zero to stop it.
+// The |ctx| argument is an opaque value that is passed through to the
+// callback.
+OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback,
+                                        void *ctx);
+
+// ERR_print_errors_fp clears the current thread's error queue, printing each
+// error to |file|. See |ERR_print_errors_cb| for the format.
+OPENSSL_EXPORT void ERR_print_errors_fp(FILE *file);
+
+
+// Clearing errors.
+
+// ERR_clear_error clears the error queue for the current thread.
+OPENSSL_EXPORT void ERR_clear_error(void);
+
+// ERR_set_mark "marks" the most recent error for use with |ERR_pop_to_mark|.
+// It returns one if an error was marked and zero if there are no errors.
+OPENSSL_EXPORT int ERR_set_mark(void);
+
+// ERR_pop_to_mark removes errors from the most recent to the least recent
+// until (and not including) a "marked" error. It returns zero if no marked
+// error was found (and thus all errors were removed) and one otherwise. Errors
+// are marked using |ERR_set_mark|.
+OPENSSL_EXPORT int ERR_pop_to_mark(void);
+
+
+// Custom errors.
+
+// ERR_get_next_error_library returns a value suitable for passing as the
+// |library| argument to |ERR_put_error|. This is intended for code that wishes
+// to push its own, non-standard errors to the error queue.
+OPENSSL_EXPORT int ERR_get_next_error_library(void);
+
+
+// Built-in library and reason codes.
+
+// The following values are built-in library codes.
+enum {
+  ERR_LIB_NONE = 1,
+  ERR_LIB_SYS,
+  ERR_LIB_BN,
+  ERR_LIB_RSA,
+  ERR_LIB_DH,
+  ERR_LIB_EVP,
+  ERR_LIB_BUF,
+  ERR_LIB_OBJ,
+  ERR_LIB_PEM,
+  ERR_LIB_DSA,
+  ERR_LIB_X509,
+  ERR_LIB_ASN1,
+  ERR_LIB_CONF,
+  ERR_LIB_CRYPTO,
+  ERR_LIB_EC,
+  ERR_LIB_SSL,
+  ERR_LIB_BIO,
+  ERR_LIB_PKCS7,
+  ERR_LIB_PKCS8,
+  ERR_LIB_X509V3,
+  ERR_LIB_RAND,
+  ERR_LIB_ENGINE,
+  ERR_LIB_OCSP,
+  ERR_LIB_UI,
+  ERR_LIB_COMP,
+  ERR_LIB_ECDSA,
+  ERR_LIB_ECDH,
+  ERR_LIB_HMAC,
+  ERR_LIB_DIGEST,
+  ERR_LIB_CIPHER,
+  ERR_LIB_HKDF,
+  ERR_LIB_USER,
+  ERR_NUM_LIBS
+};
+
+// The following reason codes used to denote an error occuring in another
+// library. They are sometimes used for a stack trace.
+#define ERR_R_SYS_LIB ERR_LIB_SYS
+#define ERR_R_BN_LIB ERR_LIB_BN
+#define ERR_R_RSA_LIB ERR_LIB_RSA
+#define ERR_R_DH_LIB ERR_LIB_DH
+#define ERR_R_EVP_LIB ERR_LIB_EVP
+#define ERR_R_BUF_LIB ERR_LIB_BUF
+#define ERR_R_OBJ_LIB ERR_LIB_OBJ
+#define ERR_R_PEM_LIB ERR_LIB_PEM
+#define ERR_R_DSA_LIB ERR_LIB_DSA
+#define ERR_R_X509_LIB ERR_LIB_X509
+#define ERR_R_ASN1_LIB ERR_LIB_ASN1
+#define ERR_R_CONF_LIB ERR_LIB_CONF
+#define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO
+#define ERR_R_EC_LIB ERR_LIB_EC
+#define ERR_R_SSL_LIB ERR_LIB_SSL
+#define ERR_R_BIO_LIB ERR_LIB_BIO
+#define ERR_R_PKCS7_LIB ERR_LIB_PKCS7
+#define ERR_R_PKCS8_LIB ERR_LIB_PKCS8
+#define ERR_R_X509V3_LIB ERR_LIB_X509V3
+#define ERR_R_RAND_LIB ERR_LIB_RAND
+#define ERR_R_DSO_LIB ERR_LIB_DSO
+#define ERR_R_ENGINE_LIB ERR_LIB_ENGINE
+#define ERR_R_OCSP_LIB ERR_LIB_OCSP
+#define ERR_R_UI_LIB ERR_LIB_UI
+#define ERR_R_COMP_LIB ERR_LIB_COMP
+#define ERR_R_ECDSA_LIB ERR_LIB_ECDSA
+#define ERR_R_ECDH_LIB ERR_LIB_ECDH
+#define ERR_R_STORE_LIB ERR_LIB_STORE
+#define ERR_R_FIPS_LIB ERR_LIB_FIPS
+#define ERR_R_CMS_LIB ERR_LIB_CMS
+#define ERR_R_TS_LIB ERR_LIB_TS
+#define ERR_R_HMAC_LIB ERR_LIB_HMAC
+#define ERR_R_JPAKE_LIB ERR_LIB_JPAKE
+#define ERR_R_USER_LIB ERR_LIB_USER
+#define ERR_R_DIGEST_LIB ERR_LIB_DIGEST
+#define ERR_R_CIPHER_LIB ERR_LIB_CIPHER
+#define ERR_R_HKDF_LIB ERR_LIB_HKDF
+
+// The following values are global reason codes. They may occur in any library.
+#define ERR_R_FATAL 64
+#define ERR_R_MALLOC_FAILURE (1 | ERR_R_FATAL)
+#define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2 | ERR_R_FATAL)
+#define ERR_R_PASSED_NULL_PARAMETER (3 | ERR_R_FATAL)
+#define ERR_R_INTERNAL_ERROR (4 | ERR_R_FATAL)
+#define ERR_R_OVERFLOW (5 | ERR_R_FATAL)
+
+
+// Deprecated functions.
+
+// ERR_remove_state calls |ERR_clear_error|.
+OPENSSL_EXPORT void ERR_remove_state(unsigned long pid);
+
+// ERR_remove_thread_state clears the error queue for the current thread if
+// |tid| is NULL. Otherwise it calls |assert(0)|, because it's no longer
+// possible to delete the error queue for other threads.
+//
+// Use |ERR_clear_error| instead. Note error queues are deleted automatically on
+// thread exit. You do not need to call this function to release memory.
+OPENSSL_EXPORT void ERR_remove_thread_state(const CRYPTO_THREADID *tid);
+
+// ERR_func_error_string returns the string "OPENSSL_internal".
+OPENSSL_EXPORT const char *ERR_func_error_string(uint32_t packed_error);
+
+// ERR_error_string behaves like |ERR_error_string_n| but |len| is implicitly
+// |ERR_ERROR_STRING_BUF_LEN|.
+//
+// Additionally, if |buf| is NULL, the error string is placed in a static buffer
+// which is returned. This is not thread-safe and only exists for backwards
+// compatibility with legacy callers. The static buffer will be overridden by
+// calls in other threads.
+//
+// Use |ERR_error_string_n| instead.
+//
+// TODO(fork): remove this function.
+OPENSSL_EXPORT char *ERR_error_string(uint32_t packed_error, char *buf);
+#define ERR_ERROR_STRING_BUF_LEN 120
+
+// ERR_GET_FUNC returns zero. BoringSSL errors do not report a function code.
+#define ERR_GET_FUNC(packed_error) 0
+
+// ERR_TXT_STRING is provided for compatibility with code that assumes that
+// it's using OpenSSL.
+#define ERR_TXT_STRING ERR_FLAG_STRING
+
+
+// Private functions.
+
+// ERR_clear_system_error clears the system's error value (i.e. errno).
+OPENSSL_EXPORT void ERR_clear_system_error(void);
+
+// OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error
+// queue.
+#define OPENSSL_PUT_ERROR(library, reason) \
+  ERR_put_error(ERR_LIB_##library, 0, reason, __FILE__, __LINE__)
+
+// OPENSSL_PUT_SYSTEM_ERROR is used by OpenSSL code to add an error from the
+// operating system to the error queue.
+// TODO(fork): include errno.
+#define OPENSSL_PUT_SYSTEM_ERROR() \
+  ERR_put_error(ERR_LIB_SYS, 0, 0, __FILE__, __LINE__);
+
+// ERR_put_error adds an error to the error queue, dropping the least recent
+// error if necessary for space reasons.
+OPENSSL_EXPORT void ERR_put_error(int library, int unused, int reason,
+                                  const char *file, unsigned line);
+
+// ERR_add_error_data takes a variable number (|count|) of const char*
+// pointers, concatenates them and sets the result as the data on the most
+// recent error.
+OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...);
+
+// ERR_add_error_dataf takes a printf-style format and arguments, and sets the
+// result as the data on the most recent error.
+OPENSSL_EXPORT void ERR_add_error_dataf(const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(1, 2);
+
+// ERR_NUM_ERRORS is one more than the limit of the number of errors in the
+// queue.
+#define ERR_NUM_ERRORS 16
+
+#define ERR_PACK(lib, reason)                                              \
+  (((((uint32_t)(lib)) & 0xff) << 24) | ((((uint32_t)(reason)) & 0xfff)))
+
+// OPENSSL_DECLARE_ERROR_REASON is used by util/make_errors.h (which generates
+// the error defines) to recognise that an additional reason value is needed.
+// This is needed when the reason value is used outside of an
+// |OPENSSL_PUT_ERROR| macro. The resulting define will be
+// ${lib}_R_${reason}.
+#define OPENSSL_DECLARE_ERROR_REASON(lib, reason)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_ERR_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h
new file mode 100644
index 0000000..71a9803
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h	
@@ -0,0 +1,1048 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_EVP_H
+#define OPENSSL_HEADER_EVP_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/thread.h>
+
+// OpenSSL included digest and cipher functions in this header so we include
+// them for users that still expect that.
+//
+// TODO(fork): clean up callers so that they include what they use.
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/base64.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP abstracts over public/private key algorithms.
+
+
+// Public key objects.
+//
+// An |EVP_PKEY| object represents a public or private key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EVP_PKEY_new creates a new, empty public-key object and returns it or NULL
+// on allocation failure.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new(void);
+
+// EVP_PKEY_free frees all data referenced by |pkey| and then frees |pkey|
+// itself.
+OPENSSL_EXPORT void EVP_PKEY_free(EVP_PKEY *pkey);
+
+// EVP_PKEY_up_ref increments the reference count of |pkey| and returns one. It
+// does not mutate |pkey| for thread-safety purposes and may be used
+// concurrently.
+OPENSSL_EXPORT int EVP_PKEY_up_ref(EVP_PKEY *pkey);
+
+// EVP_PKEY_is_opaque returns one if |pkey| is opaque. Opaque keys are backed by
+// custom implementations which do not expose key material and parameters. It is
+// an error to attempt to duplicate, export, or compare an opaque key.
+OPENSSL_EXPORT int EVP_PKEY_is_opaque(const EVP_PKEY *pkey);
+
+// EVP_PKEY_cmp compares |a| and |b| and returns one if they are equal, zero if
+// not and a negative number on error.
+//
+// WARNING: this differs from the traditional return value of a "cmp"
+// function.
+OPENSSL_EXPORT int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
+
+// EVP_PKEY_copy_parameters sets the parameters of |to| to equal the parameters
+// of |from|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
+
+// EVP_PKEY_missing_parameters returns one if |pkey| is missing needed
+// parameters or zero if not, or if the algorithm doesn't take parameters.
+OPENSSL_EXPORT int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
+
+// EVP_PKEY_size returns the maximum size, in bytes, of a signature signed by
+// |pkey|. For an RSA key, this returns the number of bytes needed to represent
+// the modulus. For an EC key, this returns the maximum size of a DER-encoded
+// ECDSA signature.
+OPENSSL_EXPORT int EVP_PKEY_size(const EVP_PKEY *pkey);
+
+// EVP_PKEY_bits returns the "size", in bits, of |pkey|. For an RSA key, this
+// returns the bit length of the modulus. For an EC key, this returns the bit
+// length of the group order.
+OPENSSL_EXPORT int EVP_PKEY_bits(const EVP_PKEY *pkey);
+
+// EVP_PKEY_id returns the type of |pkey|, which is one of the |EVP_PKEY_*|
+// values.
+OPENSSL_EXPORT int EVP_PKEY_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_type returns |nid| if |nid| is a known key type and |NID_undef|
+// otherwise.
+OPENSSL_EXPORT int EVP_PKEY_type(int nid);
+
+
+// Getting and setting concrete public key types.
+//
+// The following functions get and set the underlying public key in an
+// |EVP_PKEY| object. The |set1| functions take an additional reference to the
+// underlying key and return one on success or zero if |key| is NULL. The
+// |assign| functions adopt the caller's reference and return one on success or
+// zero if |key| is NULL. The |get1| functions return a fresh reference to the
+// underlying object or NULL if |pkey| is not of the correct type. The |get0|
+// functions behave the same but return a non-owning pointer.
+//
+// The |get0| and |get1| functions take |const| pointers and are thus
+// non-mutating for thread-safety purposes, but mutating functions on the
+// returned lower-level objects are considered to also mutate the |EVP_PKEY| and
+// may not be called concurrently with other operations on the |EVP_PKEY|.
+
+OPENSSL_EXPORT int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey);
+
+#define EVP_PKEY_NONE NID_undef
+#define EVP_PKEY_RSA NID_rsaEncryption
+#define EVP_PKEY_RSA_PSS NID_rsassaPss
+#define EVP_PKEY_DSA NID_dsa
+#define EVP_PKEY_EC NID_X9_62_id_ecPublicKey
+#define EVP_PKEY_ED25519 NID_ED25519
+#define EVP_PKEY_X25519 NID_X25519
+
+// EVP_PKEY_assign sets the underlying key of |pkey| to |key|, which must be of
+// the given type. It returns one if successful or zero if the |type| argument
+// is not one of the |EVP_PKEY_*| values or if |key| is NULL.
+OPENSSL_EXPORT int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
+
+// EVP_PKEY_set_type sets the type of |pkey| to |type|. It returns one if
+// successful or zero if the |type| argument is not one of the |EVP_PKEY_*|
+// values. If |pkey| is NULL, it simply reports whether the type is known.
+OPENSSL_EXPORT int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
+
+// EVP_PKEY_cmp_parameters compares the parameters of |a| and |b|. It returns
+// one if they match, zero if not, or a negative number of on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_cmp_parameters(const EVP_PKEY *a,
+                                           const EVP_PKEY *b);
+
+
+// ASN.1 functions
+
+// EVP_parse_public_key decodes a DER-encoded SubjectPublicKeyInfo structure
+// (RFC 5280) from |cbs| and advances |cbs|. It returns a newly-allocated
+// |EVP_PKEY| or NULL on error. If the key is an EC key, the curve is guaranteed
+// to be set.
+//
+// The caller must check the type of the parsed public key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_public_key(CBS *cbs);
+
+// EVP_marshal_public_key marshals |key| as a DER-encoded SubjectPublicKeyInfo
+// structure (RFC 5280) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key);
+
+// EVP_parse_private_key decodes a DER-encoded PrivateKeyInfo structure (RFC
+// 5208) from |cbs| and advances |cbs|. It returns a newly-allocated |EVP_PKEY|
+// or NULL on error.
+//
+// The caller must check the type of the parsed private key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+//
+// A PrivateKeyInfo ends with an optional set of attributes. These are not
+// processed and so this function will silently ignore any trailing data in the
+// structure.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_private_key(CBS *cbs);
+
+// EVP_marshal_private_key marshals |key| as a DER-encoded PrivateKeyInfo
+// structure (RFC 5208) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key);
+
+
+// Raw keys
+//
+// Some keys types support a "raw" serialization. Currently the only supported
+// raw format is Ed25519, where the public key and private key formats are those
+// specified in RFC 8032. Note the RFC 8032 private key format is the 32-byte
+// prefix of |ED25519_sign|'s 64-byte private key.
+
+// EVP_PKEY_new_raw_private_key returns a newly allocated |EVP_PKEY| wrapping a
+// private key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
+                                                      const uint8_t *in,
+                                                      size_t len);
+
+// EVP_PKEY_new_raw_public_key returns a newly allocated |EVP_PKEY| wrapping a
+// public key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
+                                                     const uint8_t *in,
+                                                     size_t len);
+
+// EVP_PKEY_get_raw_private_key outputs the private key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw private key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no private key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey,
+                                                uint8_t *out, size_t *out_len);
+
+// EVP_PKEY_get_raw_public_key outputs the public key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw public key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no public key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey,
+                                               uint8_t *out, size_t *out_len);
+
+
+// Signing
+
+// EVP_DigestSignInit sets up |ctx| for a signing operation with |type| and
+// |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestSign|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                      const EVP_MD *type, ENGINE *e,
+                                      EVP_PKEY *pkey);
+
+// EVP_DigestSignUpdate appends |len| bytes from |data| to the data which will
+// be signed in |EVP_DigestSignFinal|. It returns one.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+OPENSSL_EXPORT int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                        size_t len);
+
+// EVP_DigestSignFinal signs the data that has been included by one or more
+// calls to |EVP_DigestSignUpdate|. If |out_sig| is NULL then |*out_sig_len| is
+// set to the maximum number of output bytes. Otherwise, on entry,
+// |*out_sig_len| must contain the length of the |out_sig| buffer. If the call
+// is successful, the signature is written to |out_sig| and |*out_sig_len| is
+// set to its length.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                       size_t *out_sig_len);
+
+// EVP_DigestSign signs |data_len| bytes from |data| using |ctx|. If |out_sig|
+// is NULL then |*out_sig_len| is set to the maximum number of output
+// bytes. Otherwise, on entry, |*out_sig_len| must contain the length of the
+// |out_sig| buffer. If the call is successful, the signature is written to
+// |out_sig| and |*out_sig_len| is set to its length.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                  size_t *out_sig_len, const uint8_t *data,
+                                  size_t data_len);
+
+
+// Verifying
+
+// EVP_DigestVerifyInit sets up |ctx| for a signature verification operation
+// with |type| and |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestVerify|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                        const EVP_MD *type, ENGINE *e,
+                                        EVP_PKEY *pkey);
+
+// EVP_DigestVerifyUpdate appends |len| bytes from |data| to the data which
+// will be verified by |EVP_DigestVerifyFinal|. It returns one.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                          size_t len);
+
+// EVP_DigestVerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature for the data that has been included by one or more calls to
+// |EVP_DigestVerifyUpdate|. It returns one on success and zero otherwise.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                         size_t sig_len);
+
+// EVP_DigestVerify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |data|. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                    size_t sig_len, const uint8_t *data,
+                                    size_t len);
+
+
+// Signing (old functions)
+
+// EVP_SignInit_ex configures |ctx|, which must already have been initialised,
+// for a fresh signing operation using the hash function |type|. It returns one
+// on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                   ENGINE *impl);
+
+// EVP_SignInit is a deprecated version of |EVP_SignInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_SignUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_SignFinal|.
+OPENSSL_EXPORT int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                  size_t len);
+
+// EVP_SignFinal signs the data that has been included by one or more calls to
+// |EVP_SignUpdate|, using the key |pkey|, and writes it to |sig|. On entry,
+// |sig| must point to at least |EVP_PKEY_size(pkey)| bytes of space. The
+// actual size of the signature is written to |*out_sig_len|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to sign a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
+                                 unsigned int *out_sig_len, EVP_PKEY *pkey);
+
+
+// Verifying (old functions)
+
+// EVP_VerifyInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh signature verification operation using the hash
+// function |type|. It returns one on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *impl);
+
+// EVP_VerifyInit is a deprecated version of |EVP_VerifyInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_VerifyUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_VerifyFinal|.
+OPENSSL_EXPORT int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_VerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature, by |pkey|, for the data that has been included by one or more
+// calls to |EVP_VerifyUpdate|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to verify a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, EVP_PKEY *pkey);
+
+
+// Printing
+
+// EVP_PKEY_print_public prints a textual representation of the public key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_private prints a textual representation of the private key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
+                                          int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_params prints a textual representation of the parameters in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+
+// Password stretching.
+//
+// Password stretching functions take a low-entropy password and apply a slow
+// function that results in a key suitable for use in symmetric
+// cryptography.
+
+// PKCS5_PBKDF2_HMAC computes |iterations| iterations of PBKDF2 of |password|
+// and |salt|, using |digest|, and outputs |key_len| bytes to |out_key|. It
+// returns one on success and zero on allocation failure or if iterations is 0.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
+                                     const uint8_t *salt, size_t salt_len,
+                                     unsigned iterations, const EVP_MD *digest,
+                                     size_t key_len, uint8_t *out_key);
+
+// PKCS5_PBKDF2_HMAC_SHA1 is the same as PKCS5_PBKDF2_HMAC, but with |digest|
+// fixed to |EVP_sha1|.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC_SHA1(const char *password,
+                                          size_t password_len,
+                                          const uint8_t *salt, size_t salt_len,
+                                          unsigned iterations, size_t key_len,
+                                          uint8_t *out_key);
+
+// EVP_PBE_scrypt expands |password| into a secret key of length |key_len| using
+// scrypt, as described in RFC 7914, and writes the result to |out_key|. It
+// returns one on success and zero on allocation failure, if the memory required
+// for the operation exceeds |max_mem|, or if any of the parameters are invalid
+// as described below.
+//
+// |N|, |r|, and |p| are as described in RFC 7914 section 6. They determine the
+// cost of the operation. If |max_mem| is zero, a defult limit of 32MiB will be
+// used.
+//
+// The parameters are considered invalid under any of the following conditions:
+// - |r| or |p| are zero
+// - |p| > (2^30 - 1) / |r|
+// - |N| is not a power of two
+// - |N| > 2^32
+// - |N| > 2^(128 * |r| / 8)
+OPENSSL_EXPORT int EVP_PBE_scrypt(const char *password, size_t password_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  uint64_t N, uint64_t r, uint64_t p,
+                                  size_t max_mem, uint8_t *out_key,
+                                  size_t key_len);
+
+
+// Public key contexts.
+//
+// |EVP_PKEY_CTX| objects hold the context of an operation (e.g. signing or
+// encrypting) that uses a public key.
+
+// EVP_PKEY_CTX_new allocates a fresh |EVP_PKEY_CTX| for use with |pkey|. It
+// returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
+
+// EVP_PKEY_CTX_new_id allocates a fresh |EVP_PKEY_CTX| for a key of type |id|
+// (e.g. |EVP_PKEY_HMAC|). This can be used for key generation where
+// |EVP_PKEY_CTX_new| can't be used because there isn't an |EVP_PKEY| to pass
+// it. It returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
+
+// EVP_PKEY_CTX_free frees |ctx| and the data it owns.
+OPENSSL_EXPORT void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_dup allocates a fresh |EVP_PKEY_CTX| and sets it equal to the
+// state of |ctx|. It returns the fresh |EVP_PKEY_CTX| or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_get0_pkey returns the |EVP_PKEY| associated with |ctx|.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign_init initialises an |EVP_PKEY_CTX| for a signing operation. It
+// should be called before |EVP_PKEY_sign|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign signs |digest_len| bytes from |digest| using |ctx|. If |sig| is
+// NULL, the maximum size of the signature is written to
+// |out_sig_len|. Otherwise, |*sig_len| must contain the number of bytes of
+// space available at |sig|. If sufficient, the signature will be written to
+// |sig| and |*sig_len| updated with the true length.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestSignInit| to sign an
+// unhashed input.
+//
+// WARNING: Setting |sig| to NULL only gives the maximum size of the
+// signature. The actual signature may be smaller.
+//
+// It returns one on success or zero on error. (Note: this differs from
+// OpenSSL, which can also return negative values to indicate an error. )
+OPENSSL_EXPORT int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig,
+                                 size_t *sig_len, const uint8_t *digest,
+                                 size_t digest_len);
+
+// EVP_PKEY_verify_init initialises an |EVP_PKEY_CTX| for a signature
+// verification operation. It should be called before |EVP_PKEY_verify|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |digest|.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestVerifyInit| to verify a
+// signature given the unhashed input.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, const uint8_t *digest,
+                                   size_t digest_len);
+
+// EVP_PKEY_encrypt_init initialises an |EVP_PKEY_CTX| for an encryption
+// operation. It should be called before |EVP_PKEY_encrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_encrypt encrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the ciphertext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// ciphertext. The actual ciphertext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_decrypt_init initialises an |EVP_PKEY_CTX| for a decryption
+// operation. It should be called before |EVP_PKEY_decrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_decrypt decrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the plaintext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_verify_recover_init initialises an |EVP_PKEY_CTX| for a public-key
+// decryption operation. It should be called before |EVP_PKEY_verify_recover|.
+//
+// Public-key decryption is a very obscure operation that is only implemented
+// by RSA keys. It is effectively a signature verification operation that
+// returns the signed message directly. It is almost certainly not what you
+// want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify_recover decrypts |sig_len| bytes from |sig|. If |out| is
+// NULL, the maximum size of the plaintext is written to |out_len|. Otherwise,
+// |*out_len| must contain the number of bytes of space available at |out|. If
+// sufficient, the ciphertext will be written to |out| and |*out_len| updated
+// with the true length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// See the warning about this operation in |EVP_PKEY_verify_recover_init|. It
+// is probably not what you want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                           size_t *out_len, const uint8_t *sig,
+                                           size_t siglen);
+
+// EVP_PKEY_derive_init initialises an |EVP_PKEY_CTX| for a key derivation
+// operation. It should be called before |EVP_PKEY_derive_set_peer| and
+// |EVP_PKEY_derive|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_derive_set_peer sets the peer's key to be used for key derivation
+// by |ctx| to |peer|. It should be called after |EVP_PKEY_derive_init|. (For
+// example, this is used to set the peer's key in (EC)DH.) It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
+
+// EVP_PKEY_derive derives a shared key between the two keys configured in
+// |ctx|. If |key| is non-NULL then, on entry, |out_key_len| must contain the
+// amount of space at |key|. If sufficient then the shared key will be written
+// to |key| and |*out_key_len| will be set to the length. If |key| is NULL then
+// |out_key_len| will be set to the maximum length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the key. The
+// actual key may be smaller.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
+                                   size_t *out_key_len);
+
+// EVP_PKEY_keygen_init initialises an |EVP_PKEY_CTX| for a key generation
+// operation. It should be called before |EVP_PKEY_keygen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_keygen performs a key generation operation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting key. Otherwise, it sets |*out_pkey| to a newly-allocated |EVP_PKEY|
+// containing the result. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+// EVP_PKEY_paramgen_init initialises an |EVP_PKEY_CTX| for a parameter
+// generation operation. It should be called before |EVP_PKEY_paramgen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_paramgen performs a parameter generation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting parameters, but no key. Otherwise, it sets |*out_pkey| to a
+// newly-allocated |EVP_PKEY| containing the result. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+
+// Generic control functions.
+
+// EVP_PKEY_CTX_set_signature_md sets |md| as the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_signature_md sets |*out_md| to the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD **out_md);
+
+
+// RSA specific control functions.
+
+// EVP_PKEY_CTX_set_rsa_padding sets the padding type to use. It should be one
+// of the |RSA_*_PADDING| values. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding);
+
+// EVP_PKEY_CTX_get_rsa_padding sets |*out_padding| to the current padding
+// value, which is one of the |RSA_*_PADDING| values. Returns one on success or
+// zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx,
+                                                int *out_padding);
+
+// EVP_PKEY_CTX_set_rsa_pss_saltlen sets the length of the salt in a PSS-padded
+// signature. A value of -1 cause the salt to be the same length as the digest
+// in the signature. A value of -2 causes the salt to be the maximum length
+// that will fit when signing and recovered from the signature when verifying.
+// Otherwise the value gives the size of the salt in bytes.
+//
+// If unsure, use -1.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int salt_len);
+
+// EVP_PKEY_CTX_get_rsa_pss_saltlen sets |*out_salt_len| to the salt length of
+// a PSS-padded signature. See the documentation for
+// |EVP_PKEY_CTX_set_rsa_pss_saltlen| for details of the special values that it
+// can take.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int *out_salt_len);
+
+// EVP_PKEY_CTX_set_rsa_keygen_bits sets the size of the desired RSA modulus,
+// in bits, for key generation. Returns one on success or zero on
+// error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx,
+                                                    int bits);
+
+// EVP_PKEY_CTX_set_rsa_keygen_pubexp sets |e| as the public exponent for key
+// generation. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx,
+                                                      BIGNUM *e);
+
+// EVP_PKEY_CTX_set_rsa_oaep_md sets |md| as the digest used in OAEP padding.
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_oaep_md sets |*out_md| to the digest function used in
+// OAEP padding. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set_rsa_mgf1_md sets |md| as the digest used in MGF1. Returns
+// one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_mgf1_md sets |*out_md| to the digest function used in
+// MGF1. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set0_rsa_oaep_label sets |label_len| bytes from |label| as the
+// label used in OAEP. DANGER: On success, this call takes ownership of |label|
+// and will call |OPENSSL_free| on it when |ctx| is destroyed.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    uint8_t *label,
+                                                    size_t label_len);
+
+// EVP_PKEY_CTX_get0_rsa_oaep_label sets |*out_label| to point to the internal
+// buffer containing the OAEP label (which may be NULL) and returns the length
+// of the label or a negative value on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    const uint8_t **out_label);
+
+
+// EC specific control functions.
+
+// EVP_PKEY_CTX_set_ec_paramgen_curve_nid sets the curve used for
+// |EVP_PKEY_keygen| or |EVP_PKEY_paramgen| operations to |nid|. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx,
+                                                          int nid);
+
+
+// Deprecated functions.
+
+// EVP_PKEY_DH is defined for compatibility, but it is impossible to create an
+// |EVP_PKEY| of that type.
+#define EVP_PKEY_DH NID_dhKeyAgreement
+
+// EVP_PKEY_RSA2 was historically an alternate form for RSA public keys (OID
+// 2.5.8.1.1), but is no longer accepted.
+#define EVP_PKEY_RSA2 NID_rsa
+
+// EVP_PKEY_X448 is defined for OpenSSL compatibility, but we do not support
+// X448 and attempts to create keys will fail.
+#define EVP_PKEY_X448 NID_X448
+
+// EVP_PKEY_ED448 is defined for OpenSSL compatibility, but we do not support
+// Ed448 and attempts to create keys will fail.
+#define EVP_PKEY_ED448 NID_ED448
+
+// OpenSSL_add_all_algorithms does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_algorithms(void);
+
+// OPENSSL_add_all_algorithms_conf does nothing.
+OPENSSL_EXPORT void OPENSSL_add_all_algorithms_conf(void);
+
+// OpenSSL_add_all_ciphers does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_ciphers(void);
+
+// OpenSSL_add_all_digests does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_digests(void);
+
+// EVP_cleanup does nothing.
+OPENSSL_EXPORT void EVP_cleanup(void);
+
+OPENSSL_EXPORT void EVP_CIPHER_do_all_sorted(
+    void (*callback)(const EVP_CIPHER *cipher, const char *name,
+                     const char *unused, void *arg),
+    void *arg);
+
+OPENSSL_EXPORT void EVP_MD_do_all_sorted(void (*callback)(const EVP_MD *cipher,
+                                                          const char *name,
+                                                          const char *unused,
+                                                          void *arg),
+                                         void *arg);
+
+// i2d_PrivateKey marshals a private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as a DER-encoded ECPrivateKey (RFC 5915) structure.
+//
+// Use |RSA_marshal_private_key| or |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_PrivateKey(const EVP_PKEY *key, uint8_t **outp);
+
+// i2d_PublicKey marshals a public key from |key| to a type-specific format.
+// If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as an EC point per SEC 1.
+//
+// Use |RSA_marshal_public_key| or |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp);
+
+// d2i_PrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |EVP_PKEY| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out,
+                                        const uint8_t **inp, long len);
+
+// d2i_AutoPrivateKey acts the same as |d2i_PrivateKey|, but detects the type
+// of the private key.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp,
+                                            long len);
+
+// d2i_PublicKey parse a public key from |len| bytes at |*inp| in a type-
+// specific format specified by |type|. If |out| is not NULL then, on exit, a
+// pointer to the result is in |*out|. Note that, even if |*out| is already non-
+// NULL on entry, it will not be written to. Rather, a fresh |EVP_PKEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the decoded key. It returns the result or NULL on error.
+//
+// RSA keys are parsed as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// Parsing EC keys is not supported by this function.
+//
+// Use |RSA_parse_public_key| instead.
+OPENSSL_EXPORT EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out,
+                                       const uint8_t **inp, long len);
+
+// EVP_PKEY_get0_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_get1_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_ec_param_enc returns one if |encoding| is
+// |OPENSSL_EC_NAMED_CURVE| or zero with an error otherwise.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx,
+                                                 int encoding);
+
+// EVP_PKEY_set1_tls_encodedpoint replaces |pkey| with a public key encoded by
+// |in|. It returns one on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
+                                                  const uint8_t *in,
+                                                  size_t len);
+
+// EVP_PKEY_get1_tls_encodedpoint sets |*out_ptr| to a newly-allocated buffer
+// containing the raw encoded public key for |pkey|. The caller must call
+// |OPENSSL_free| to release this buffer. The function returns the length of the
+// buffer on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey,
+                                                     uint8_t **out_ptr);
+
+// EVP_PKEY_base_id calls |EVP_PKEY_id|.
+OPENSSL_EXPORT int EVP_PKEY_base_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx,
+                                                      const EVP_MD *md);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx,
+                                                           int salt_len);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                           const EVP_MD *md);
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+#endif
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define EVPerr(function, reason) \
+  ERR_put_error(ERR_LIB_EVP, 0, reason, __FILE__, __LINE__)
+
+
+// Private structures.
+
+struct evp_pkey_st {
+  CRYPTO_refcount_t references;
+
+  // type contains one of the EVP_PKEY_* values or NID_undef and determines
+  // which element (if any) of the |pkey| union is valid.
+  int type;
+
+  union {
+    void *ptr;
+    RSA *rsa;
+    DSA *dsa;
+    DH *dh;
+    EC_KEY *ec;
+  } pkey;
+
+  // ameth contains a pointer to a method table that contains many ASN.1
+  // methods for the key type.
+  const EVP_PKEY_ASN1_METHOD *ameth;
+} /* EVP_PKEY */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_PKEY, EVP_PKEY_free)
+BORINGSSL_MAKE_UP_REF(EVP_PKEY, EVP_PKEY_up_ref)
+BORINGSSL_MAKE_DELETER(EVP_PKEY_CTX, EVP_PKEY_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EVP_R_BUFFER_TOO_SMALL 100
+#define EVP_R_COMMAND_NOT_SUPPORTED 101
+#define EVP_R_DECODE_ERROR 102
+#define EVP_R_DIFFERENT_KEY_TYPES 103
+#define EVP_R_DIFFERENT_PARAMETERS 104
+#define EVP_R_ENCODE_ERROR 105
+#define EVP_R_EXPECTING_AN_EC_KEY_KEY 106
+#define EVP_R_EXPECTING_AN_RSA_KEY 107
+#define EVP_R_EXPECTING_A_DSA_KEY 108
+#define EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE 109
+#define EVP_R_INVALID_DIGEST_LENGTH 110
+#define EVP_R_INVALID_DIGEST_TYPE 111
+#define EVP_R_INVALID_KEYBITS 112
+#define EVP_R_INVALID_MGF1_MD 113
+#define EVP_R_INVALID_OPERATION 114
+#define EVP_R_INVALID_PADDING_MODE 115
+#define EVP_R_INVALID_PSS_SALTLEN 116
+#define EVP_R_KEYS_NOT_SET 117
+#define EVP_R_MISSING_PARAMETERS 118
+#define EVP_R_NO_DEFAULT_DIGEST 119
+#define EVP_R_NO_KEY_SET 120
+#define EVP_R_NO_MDC2_SUPPORT 121
+#define EVP_R_NO_NID_FOR_CURVE 122
+#define EVP_R_NO_OPERATION_SET 123
+#define EVP_R_NO_PARAMETERS_SET 124
+#define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE 125
+#define EVP_R_OPERATON_NOT_INITIALIZED 126
+#define EVP_R_UNKNOWN_PUBLIC_KEY_TYPE 127
+#define EVP_R_UNSUPPORTED_ALGORITHM 128
+#define EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE 129
+#define EVP_R_NOT_A_PRIVATE_KEY 130
+#define EVP_R_INVALID_SIGNATURE 131
+#define EVP_R_MEMORY_LIMIT_EXCEEDED 132
+#define EVP_R_INVALID_PARAMETERS 133
+#define EVP_R_INVALID_PEER_KEY 134
+#define EVP_R_NOT_XOF_OR_INVALID_LENGTH 135
+
+#endif  // OPENSSL_HEADER_EVP_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.back
new file mode 100644
index 0000000..d5d102e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.back	
@@ -0,0 +1,1048 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_EVP_H
+#define OPENSSL_HEADER_EVP_H
+
+#include <openssl/base.h>
+
+#include <openssl/thread.h>
+
+// OpenSSL included digest and cipher functions in this header so we include
+// them for users that still expect that.
+//
+// TODO(fork): clean up callers so that they include what they use.
+#include <openssl/aead.h>
+#include <openssl/base64.h>
+#include <openssl/cipher.h>
+#include <openssl/digest.h>
+#include <openssl/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP abstracts over public/private key algorithms.
+
+
+// Public key objects.
+//
+// An |EVP_PKEY| object represents a public or private key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EVP_PKEY_new creates a new, empty public-key object and returns it or NULL
+// on allocation failure.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new(void);
+
+// EVP_PKEY_free frees all data referenced by |pkey| and then frees |pkey|
+// itself.
+OPENSSL_EXPORT void EVP_PKEY_free(EVP_PKEY *pkey);
+
+// EVP_PKEY_up_ref increments the reference count of |pkey| and returns one. It
+// does not mutate |pkey| for thread-safety purposes and may be used
+// concurrently.
+OPENSSL_EXPORT int EVP_PKEY_up_ref(EVP_PKEY *pkey);
+
+// EVP_PKEY_is_opaque returns one if |pkey| is opaque. Opaque keys are backed by
+// custom implementations which do not expose key material and parameters. It is
+// an error to attempt to duplicate, export, or compare an opaque key.
+OPENSSL_EXPORT int EVP_PKEY_is_opaque(const EVP_PKEY *pkey);
+
+// EVP_PKEY_cmp compares |a| and |b| and returns one if they are equal, zero if
+// not and a negative number on error.
+//
+// WARNING: this differs from the traditional return value of a "cmp"
+// function.
+OPENSSL_EXPORT int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
+
+// EVP_PKEY_copy_parameters sets the parameters of |to| to equal the parameters
+// of |from|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
+
+// EVP_PKEY_missing_parameters returns one if |pkey| is missing needed
+// parameters or zero if not, or if the algorithm doesn't take parameters.
+OPENSSL_EXPORT int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
+
+// EVP_PKEY_size returns the maximum size, in bytes, of a signature signed by
+// |pkey|. For an RSA key, this returns the number of bytes needed to represent
+// the modulus. For an EC key, this returns the maximum size of a DER-encoded
+// ECDSA signature.
+OPENSSL_EXPORT int EVP_PKEY_size(const EVP_PKEY *pkey);
+
+// EVP_PKEY_bits returns the "size", in bits, of |pkey|. For an RSA key, this
+// returns the bit length of the modulus. For an EC key, this returns the bit
+// length of the group order.
+OPENSSL_EXPORT int EVP_PKEY_bits(const EVP_PKEY *pkey);
+
+// EVP_PKEY_id returns the type of |pkey|, which is one of the |EVP_PKEY_*|
+// values.
+OPENSSL_EXPORT int EVP_PKEY_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_type returns |nid| if |nid| is a known key type and |NID_undef|
+// otherwise.
+OPENSSL_EXPORT int EVP_PKEY_type(int nid);
+
+
+// Getting and setting concrete public key types.
+//
+// The following functions get and set the underlying public key in an
+// |EVP_PKEY| object. The |set1| functions take an additional reference to the
+// underlying key and return one on success or zero if |key| is NULL. The
+// |assign| functions adopt the caller's reference and return one on success or
+// zero if |key| is NULL. The |get1| functions return a fresh reference to the
+// underlying object or NULL if |pkey| is not of the correct type. The |get0|
+// functions behave the same but return a non-owning pointer.
+//
+// The |get0| and |get1| functions take |const| pointers and are thus
+// non-mutating for thread-safety purposes, but mutating functions on the
+// returned lower-level objects are considered to also mutate the |EVP_PKEY| and
+// may not be called concurrently with other operations on the |EVP_PKEY|.
+
+OPENSSL_EXPORT int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey);
+
+#define EVP_PKEY_NONE NID_undef
+#define EVP_PKEY_RSA NID_rsaEncryption
+#define EVP_PKEY_RSA_PSS NID_rsassaPss
+#define EVP_PKEY_DSA NID_dsa
+#define EVP_PKEY_EC NID_X9_62_id_ecPublicKey
+#define EVP_PKEY_ED25519 NID_ED25519
+#define EVP_PKEY_X25519 NID_X25519
+
+// EVP_PKEY_assign sets the underlying key of |pkey| to |key|, which must be of
+// the given type. It returns one if successful or zero if the |type| argument
+// is not one of the |EVP_PKEY_*| values or if |key| is NULL.
+OPENSSL_EXPORT int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
+
+// EVP_PKEY_set_type sets the type of |pkey| to |type|. It returns one if
+// successful or zero if the |type| argument is not one of the |EVP_PKEY_*|
+// values. If |pkey| is NULL, it simply reports whether the type is known.
+OPENSSL_EXPORT int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
+
+// EVP_PKEY_cmp_parameters compares the parameters of |a| and |b|. It returns
+// one if they match, zero if not, or a negative number of on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_cmp_parameters(const EVP_PKEY *a,
+                                           const EVP_PKEY *b);
+
+
+// ASN.1 functions
+
+// EVP_parse_public_key decodes a DER-encoded SubjectPublicKeyInfo structure
+// (RFC 5280) from |cbs| and advances |cbs|. It returns a newly-allocated
+// |EVP_PKEY| or NULL on error. If the key is an EC key, the curve is guaranteed
+// to be set.
+//
+// The caller must check the type of the parsed public key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_public_key(CBS *cbs);
+
+// EVP_marshal_public_key marshals |key| as a DER-encoded SubjectPublicKeyInfo
+// structure (RFC 5280) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key);
+
+// EVP_parse_private_key decodes a DER-encoded PrivateKeyInfo structure (RFC
+// 5208) from |cbs| and advances |cbs|. It returns a newly-allocated |EVP_PKEY|
+// or NULL on error.
+//
+// The caller must check the type of the parsed private key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+//
+// A PrivateKeyInfo ends with an optional set of attributes. These are not
+// processed and so this function will silently ignore any trailing data in the
+// structure.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_private_key(CBS *cbs);
+
+// EVP_marshal_private_key marshals |key| as a DER-encoded PrivateKeyInfo
+// structure (RFC 5208) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key);
+
+
+// Raw keys
+//
+// Some keys types support a "raw" serialization. Currently the only supported
+// raw format is Ed25519, where the public key and private key formats are those
+// specified in RFC 8032. Note the RFC 8032 private key format is the 32-byte
+// prefix of |ED25519_sign|'s 64-byte private key.
+
+// EVP_PKEY_new_raw_private_key returns a newly allocated |EVP_PKEY| wrapping a
+// private key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
+                                                      const uint8_t *in,
+                                                      size_t len);
+
+// EVP_PKEY_new_raw_public_key returns a newly allocated |EVP_PKEY| wrapping a
+// public key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
+                                                     const uint8_t *in,
+                                                     size_t len);
+
+// EVP_PKEY_get_raw_private_key outputs the private key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw private key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no private key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey,
+                                                uint8_t *out, size_t *out_len);
+
+// EVP_PKEY_get_raw_public_key outputs the public key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw public key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no public key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey,
+                                               uint8_t *out, size_t *out_len);
+
+
+// Signing
+
+// EVP_DigestSignInit sets up |ctx| for a signing operation with |type| and
+// |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestSign|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                      const EVP_MD *type, ENGINE *e,
+                                      EVP_PKEY *pkey);
+
+// EVP_DigestSignUpdate appends |len| bytes from |data| to the data which will
+// be signed in |EVP_DigestSignFinal|. It returns one.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+OPENSSL_EXPORT int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                        size_t len);
+
+// EVP_DigestSignFinal signs the data that has been included by one or more
+// calls to |EVP_DigestSignUpdate|. If |out_sig| is NULL then |*out_sig_len| is
+// set to the maximum number of output bytes. Otherwise, on entry,
+// |*out_sig_len| must contain the length of the |out_sig| buffer. If the call
+// is successful, the signature is written to |out_sig| and |*out_sig_len| is
+// set to its length.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                       size_t *out_sig_len);
+
+// EVP_DigestSign signs |data_len| bytes from |data| using |ctx|. If |out_sig|
+// is NULL then |*out_sig_len| is set to the maximum number of output
+// bytes. Otherwise, on entry, |*out_sig_len| must contain the length of the
+// |out_sig| buffer. If the call is successful, the signature is written to
+// |out_sig| and |*out_sig_len| is set to its length.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                  size_t *out_sig_len, const uint8_t *data,
+                                  size_t data_len);
+
+
+// Verifying
+
+// EVP_DigestVerifyInit sets up |ctx| for a signature verification operation
+// with |type| and |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestVerify|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                        const EVP_MD *type, ENGINE *e,
+                                        EVP_PKEY *pkey);
+
+// EVP_DigestVerifyUpdate appends |len| bytes from |data| to the data which
+// will be verified by |EVP_DigestVerifyFinal|. It returns one.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                          size_t len);
+
+// EVP_DigestVerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature for the data that has been included by one or more calls to
+// |EVP_DigestVerifyUpdate|. It returns one on success and zero otherwise.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                         size_t sig_len);
+
+// EVP_DigestVerify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |data|. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                    size_t sig_len, const uint8_t *data,
+                                    size_t len);
+
+
+// Signing (old functions)
+
+// EVP_SignInit_ex configures |ctx|, which must already have been initialised,
+// for a fresh signing operation using the hash function |type|. It returns one
+// on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                   ENGINE *impl);
+
+// EVP_SignInit is a deprecated version of |EVP_SignInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_SignUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_SignFinal|.
+OPENSSL_EXPORT int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                  size_t len);
+
+// EVP_SignFinal signs the data that has been included by one or more calls to
+// |EVP_SignUpdate|, using the key |pkey|, and writes it to |sig|. On entry,
+// |sig| must point to at least |EVP_PKEY_size(pkey)| bytes of space. The
+// actual size of the signature is written to |*out_sig_len|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to sign a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
+                                 unsigned int *out_sig_len, EVP_PKEY *pkey);
+
+
+// Verifying (old functions)
+
+// EVP_VerifyInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh signature verification operation using the hash
+// function |type|. It returns one on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *impl);
+
+// EVP_VerifyInit is a deprecated version of |EVP_VerifyInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_VerifyUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_VerifyFinal|.
+OPENSSL_EXPORT int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_VerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature, by |pkey|, for the data that has been included by one or more
+// calls to |EVP_VerifyUpdate|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to verify a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, EVP_PKEY *pkey);
+
+
+// Printing
+
+// EVP_PKEY_print_public prints a textual representation of the public key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_private prints a textual representation of the private key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
+                                          int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_params prints a textual representation of the parameters in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+
+// Password stretching.
+//
+// Password stretching functions take a low-entropy password and apply a slow
+// function that results in a key suitable for use in symmetric
+// cryptography.
+
+// PKCS5_PBKDF2_HMAC computes |iterations| iterations of PBKDF2 of |password|
+// and |salt|, using |digest|, and outputs |key_len| bytes to |out_key|. It
+// returns one on success and zero on allocation failure or if iterations is 0.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
+                                     const uint8_t *salt, size_t salt_len,
+                                     unsigned iterations, const EVP_MD *digest,
+                                     size_t key_len, uint8_t *out_key);
+
+// PKCS5_PBKDF2_HMAC_SHA1 is the same as PKCS5_PBKDF2_HMAC, but with |digest|
+// fixed to |EVP_sha1|.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC_SHA1(const char *password,
+                                          size_t password_len,
+                                          const uint8_t *salt, size_t salt_len,
+                                          unsigned iterations, size_t key_len,
+                                          uint8_t *out_key);
+
+// EVP_PBE_scrypt expands |password| into a secret key of length |key_len| using
+// scrypt, as described in RFC 7914, and writes the result to |out_key|. It
+// returns one on success and zero on allocation failure, if the memory required
+// for the operation exceeds |max_mem|, or if any of the parameters are invalid
+// as described below.
+//
+// |N|, |r|, and |p| are as described in RFC 7914 section 6. They determine the
+// cost of the operation. If |max_mem| is zero, a defult limit of 32MiB will be
+// used.
+//
+// The parameters are considered invalid under any of the following conditions:
+// - |r| or |p| are zero
+// - |p| > (2^30 - 1) / |r|
+// - |N| is not a power of two
+// - |N| > 2^32
+// - |N| > 2^(128 * |r| / 8)
+OPENSSL_EXPORT int EVP_PBE_scrypt(const char *password, size_t password_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  uint64_t N, uint64_t r, uint64_t p,
+                                  size_t max_mem, uint8_t *out_key,
+                                  size_t key_len);
+
+
+// Public key contexts.
+//
+// |EVP_PKEY_CTX| objects hold the context of an operation (e.g. signing or
+// encrypting) that uses a public key.
+
+// EVP_PKEY_CTX_new allocates a fresh |EVP_PKEY_CTX| for use with |pkey|. It
+// returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
+
+// EVP_PKEY_CTX_new_id allocates a fresh |EVP_PKEY_CTX| for a key of type |id|
+// (e.g. |EVP_PKEY_HMAC|). This can be used for key generation where
+// |EVP_PKEY_CTX_new| can't be used because there isn't an |EVP_PKEY| to pass
+// it. It returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
+
+// EVP_PKEY_CTX_free frees |ctx| and the data it owns.
+OPENSSL_EXPORT void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_dup allocates a fresh |EVP_PKEY_CTX| and sets it equal to the
+// state of |ctx|. It returns the fresh |EVP_PKEY_CTX| or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_get0_pkey returns the |EVP_PKEY| associated with |ctx|.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign_init initialises an |EVP_PKEY_CTX| for a signing operation. It
+// should be called before |EVP_PKEY_sign|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign signs |digest_len| bytes from |digest| using |ctx|. If |sig| is
+// NULL, the maximum size of the signature is written to
+// |out_sig_len|. Otherwise, |*sig_len| must contain the number of bytes of
+// space available at |sig|. If sufficient, the signature will be written to
+// |sig| and |*sig_len| updated with the true length.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestSignInit| to sign an
+// unhashed input.
+//
+// WARNING: Setting |sig| to NULL only gives the maximum size of the
+// signature. The actual signature may be smaller.
+//
+// It returns one on success or zero on error. (Note: this differs from
+// OpenSSL, which can also return negative values to indicate an error. )
+OPENSSL_EXPORT int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig,
+                                 size_t *sig_len, const uint8_t *digest,
+                                 size_t digest_len);
+
+// EVP_PKEY_verify_init initialises an |EVP_PKEY_CTX| for a signature
+// verification operation. It should be called before |EVP_PKEY_verify|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |digest|.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestVerifyInit| to verify a
+// signature given the unhashed input.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, const uint8_t *digest,
+                                   size_t digest_len);
+
+// EVP_PKEY_encrypt_init initialises an |EVP_PKEY_CTX| for an encryption
+// operation. It should be called before |EVP_PKEY_encrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_encrypt encrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the ciphertext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// ciphertext. The actual ciphertext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_decrypt_init initialises an |EVP_PKEY_CTX| for a decryption
+// operation. It should be called before |EVP_PKEY_decrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_decrypt decrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the plaintext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_verify_recover_init initialises an |EVP_PKEY_CTX| for a public-key
+// decryption operation. It should be called before |EVP_PKEY_verify_recover|.
+//
+// Public-key decryption is a very obscure operation that is only implemented
+// by RSA keys. It is effectively a signature verification operation that
+// returns the signed message directly. It is almost certainly not what you
+// want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify_recover decrypts |sig_len| bytes from |sig|. If |out| is
+// NULL, the maximum size of the plaintext is written to |out_len|. Otherwise,
+// |*out_len| must contain the number of bytes of space available at |out|. If
+// sufficient, the ciphertext will be written to |out| and |*out_len| updated
+// with the true length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// See the warning about this operation in |EVP_PKEY_verify_recover_init|. It
+// is probably not what you want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                           size_t *out_len, const uint8_t *sig,
+                                           size_t siglen);
+
+// EVP_PKEY_derive_init initialises an |EVP_PKEY_CTX| for a key derivation
+// operation. It should be called before |EVP_PKEY_derive_set_peer| and
+// |EVP_PKEY_derive|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_derive_set_peer sets the peer's key to be used for key derivation
+// by |ctx| to |peer|. It should be called after |EVP_PKEY_derive_init|. (For
+// example, this is used to set the peer's key in (EC)DH.) It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
+
+// EVP_PKEY_derive derives a shared key between the two keys configured in
+// |ctx|. If |key| is non-NULL then, on entry, |out_key_len| must contain the
+// amount of space at |key|. If sufficient then the shared key will be written
+// to |key| and |*out_key_len| will be set to the length. If |key| is NULL then
+// |out_key_len| will be set to the maximum length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the key. The
+// actual key may be smaller.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
+                                   size_t *out_key_len);
+
+// EVP_PKEY_keygen_init initialises an |EVP_PKEY_CTX| for a key generation
+// operation. It should be called before |EVP_PKEY_keygen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_keygen performs a key generation operation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting key. Otherwise, it sets |*out_pkey| to a newly-allocated |EVP_PKEY|
+// containing the result. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+// EVP_PKEY_paramgen_init initialises an |EVP_PKEY_CTX| for a parameter
+// generation operation. It should be called before |EVP_PKEY_paramgen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_paramgen performs a parameter generation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting parameters, but no key. Otherwise, it sets |*out_pkey| to a
+// newly-allocated |EVP_PKEY| containing the result. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+
+// Generic control functions.
+
+// EVP_PKEY_CTX_set_signature_md sets |md| as the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_signature_md sets |*out_md| to the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD **out_md);
+
+
+// RSA specific control functions.
+
+// EVP_PKEY_CTX_set_rsa_padding sets the padding type to use. It should be one
+// of the |RSA_*_PADDING| values. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding);
+
+// EVP_PKEY_CTX_get_rsa_padding sets |*out_padding| to the current padding
+// value, which is one of the |RSA_*_PADDING| values. Returns one on success or
+// zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx,
+                                                int *out_padding);
+
+// EVP_PKEY_CTX_set_rsa_pss_saltlen sets the length of the salt in a PSS-padded
+// signature. A value of -1 cause the salt to be the same length as the digest
+// in the signature. A value of -2 causes the salt to be the maximum length
+// that will fit when signing and recovered from the signature when verifying.
+// Otherwise the value gives the size of the salt in bytes.
+//
+// If unsure, use -1.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int salt_len);
+
+// EVP_PKEY_CTX_get_rsa_pss_saltlen sets |*out_salt_len| to the salt length of
+// a PSS-padded signature. See the documentation for
+// |EVP_PKEY_CTX_set_rsa_pss_saltlen| for details of the special values that it
+// can take.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int *out_salt_len);
+
+// EVP_PKEY_CTX_set_rsa_keygen_bits sets the size of the desired RSA modulus,
+// in bits, for key generation. Returns one on success or zero on
+// error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx,
+                                                    int bits);
+
+// EVP_PKEY_CTX_set_rsa_keygen_pubexp sets |e| as the public exponent for key
+// generation. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx,
+                                                      BIGNUM *e);
+
+// EVP_PKEY_CTX_set_rsa_oaep_md sets |md| as the digest used in OAEP padding.
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_oaep_md sets |*out_md| to the digest function used in
+// OAEP padding. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set_rsa_mgf1_md sets |md| as the digest used in MGF1. Returns
+// one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_mgf1_md sets |*out_md| to the digest function used in
+// MGF1. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set0_rsa_oaep_label sets |label_len| bytes from |label| as the
+// label used in OAEP. DANGER: On success, this call takes ownership of |label|
+// and will call |OPENSSL_free| on it when |ctx| is destroyed.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    uint8_t *label,
+                                                    size_t label_len);
+
+// EVP_PKEY_CTX_get0_rsa_oaep_label sets |*out_label| to point to the internal
+// buffer containing the OAEP label (which may be NULL) and returns the length
+// of the label or a negative value on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    const uint8_t **out_label);
+
+
+// EC specific control functions.
+
+// EVP_PKEY_CTX_set_ec_paramgen_curve_nid sets the curve used for
+// |EVP_PKEY_keygen| or |EVP_PKEY_paramgen| operations to |nid|. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx,
+                                                          int nid);
+
+
+// Deprecated functions.
+
+// EVP_PKEY_DH is defined for compatibility, but it is impossible to create an
+// |EVP_PKEY| of that type.
+#define EVP_PKEY_DH NID_dhKeyAgreement
+
+// EVP_PKEY_RSA2 was historically an alternate form for RSA public keys (OID
+// 2.5.8.1.1), but is no longer accepted.
+#define EVP_PKEY_RSA2 NID_rsa
+
+// EVP_PKEY_X448 is defined for OpenSSL compatibility, but we do not support
+// X448 and attempts to create keys will fail.
+#define EVP_PKEY_X448 NID_X448
+
+// EVP_PKEY_ED448 is defined for OpenSSL compatibility, but we do not support
+// Ed448 and attempts to create keys will fail.
+#define EVP_PKEY_ED448 NID_ED448
+
+// OpenSSL_add_all_algorithms does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_algorithms(void);
+
+// OPENSSL_add_all_algorithms_conf does nothing.
+OPENSSL_EXPORT void OPENSSL_add_all_algorithms_conf(void);
+
+// OpenSSL_add_all_ciphers does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_ciphers(void);
+
+// OpenSSL_add_all_digests does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_digests(void);
+
+// EVP_cleanup does nothing.
+OPENSSL_EXPORT void EVP_cleanup(void);
+
+OPENSSL_EXPORT void EVP_CIPHER_do_all_sorted(
+    void (*callback)(const EVP_CIPHER *cipher, const char *name,
+                     const char *unused, void *arg),
+    void *arg);
+
+OPENSSL_EXPORT void EVP_MD_do_all_sorted(void (*callback)(const EVP_MD *cipher,
+                                                          const char *name,
+                                                          const char *unused,
+                                                          void *arg),
+                                         void *arg);
+
+// i2d_PrivateKey marshals a private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as a DER-encoded ECPrivateKey (RFC 5915) structure.
+//
+// Use |RSA_marshal_private_key| or |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_PrivateKey(const EVP_PKEY *key, uint8_t **outp);
+
+// i2d_PublicKey marshals a public key from |key| to a type-specific format.
+// If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as an EC point per SEC 1.
+//
+// Use |RSA_marshal_public_key| or |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp);
+
+// d2i_PrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |EVP_PKEY| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out,
+                                        const uint8_t **inp, long len);
+
+// d2i_AutoPrivateKey acts the same as |d2i_PrivateKey|, but detects the type
+// of the private key.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp,
+                                            long len);
+
+// d2i_PublicKey parse a public key from |len| bytes at |*inp| in a type-
+// specific format specified by |type|. If |out| is not NULL then, on exit, a
+// pointer to the result is in |*out|. Note that, even if |*out| is already non-
+// NULL on entry, it will not be written to. Rather, a fresh |EVP_PKEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the decoded key. It returns the result or NULL on error.
+//
+// RSA keys are parsed as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// Parsing EC keys is not supported by this function.
+//
+// Use |RSA_parse_public_key| instead.
+OPENSSL_EXPORT EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out,
+                                       const uint8_t **inp, long len);
+
+// EVP_PKEY_get0_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_get1_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_ec_param_enc returns one if |encoding| is
+// |OPENSSL_EC_NAMED_CURVE| or zero with an error otherwise.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx,
+                                                 int encoding);
+
+// EVP_PKEY_set1_tls_encodedpoint replaces |pkey| with a public key encoded by
+// |in|. It returns one on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
+                                                  const uint8_t *in,
+                                                  size_t len);
+
+// EVP_PKEY_get1_tls_encodedpoint sets |*out_ptr| to a newly-allocated buffer
+// containing the raw encoded public key for |pkey|. The caller must call
+// |OPENSSL_free| to release this buffer. The function returns the length of the
+// buffer on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey,
+                                                     uint8_t **out_ptr);
+
+// EVP_PKEY_base_id calls |EVP_PKEY_id|.
+OPENSSL_EXPORT int EVP_PKEY_base_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx,
+                                                      const EVP_MD *md);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx,
+                                                           int salt_len);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                           const EVP_MD *md);
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+#endif
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define EVPerr(function, reason) \
+  ERR_put_error(ERR_LIB_EVP, 0, reason, __FILE__, __LINE__)
+
+
+// Private structures.
+
+struct evp_pkey_st {
+  CRYPTO_refcount_t references;
+
+  // type contains one of the EVP_PKEY_* values or NID_undef and determines
+  // which element (if any) of the |pkey| union is valid.
+  int type;
+
+  union {
+    void *ptr;
+    RSA *rsa;
+    DSA *dsa;
+    DH *dh;
+    EC_KEY *ec;
+  } pkey;
+
+  // ameth contains a pointer to a method table that contains many ASN.1
+  // methods for the key type.
+  const EVP_PKEY_ASN1_METHOD *ameth;
+} /* EVP_PKEY */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_PKEY, EVP_PKEY_free)
+BORINGSSL_MAKE_UP_REF(EVP_PKEY, EVP_PKEY_up_ref)
+BORINGSSL_MAKE_DELETER(EVP_PKEY_CTX, EVP_PKEY_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EVP_R_BUFFER_TOO_SMALL 100
+#define EVP_R_COMMAND_NOT_SUPPORTED 101
+#define EVP_R_DECODE_ERROR 102
+#define EVP_R_DIFFERENT_KEY_TYPES 103
+#define EVP_R_DIFFERENT_PARAMETERS 104
+#define EVP_R_ENCODE_ERROR 105
+#define EVP_R_EXPECTING_AN_EC_KEY_KEY 106
+#define EVP_R_EXPECTING_AN_RSA_KEY 107
+#define EVP_R_EXPECTING_A_DSA_KEY 108
+#define EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE 109
+#define EVP_R_INVALID_DIGEST_LENGTH 110
+#define EVP_R_INVALID_DIGEST_TYPE 111
+#define EVP_R_INVALID_KEYBITS 112
+#define EVP_R_INVALID_MGF1_MD 113
+#define EVP_R_INVALID_OPERATION 114
+#define EVP_R_INVALID_PADDING_MODE 115
+#define EVP_R_INVALID_PSS_SALTLEN 116
+#define EVP_R_KEYS_NOT_SET 117
+#define EVP_R_MISSING_PARAMETERS 118
+#define EVP_R_NO_DEFAULT_DIGEST 119
+#define EVP_R_NO_KEY_SET 120
+#define EVP_R_NO_MDC2_SUPPORT 121
+#define EVP_R_NO_NID_FOR_CURVE 122
+#define EVP_R_NO_OPERATION_SET 123
+#define EVP_R_NO_PARAMETERS_SET 124
+#define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE 125
+#define EVP_R_OPERATON_NOT_INITIALIZED 126
+#define EVP_R_UNKNOWN_PUBLIC_KEY_TYPE 127
+#define EVP_R_UNSUPPORTED_ALGORITHM 128
+#define EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE 129
+#define EVP_R_NOT_A_PRIVATE_KEY 130
+#define EVP_R_INVALID_SIGNATURE 131
+#define EVP_R_MEMORY_LIMIT_EXCEEDED 132
+#define EVP_R_INVALID_PARAMETERS 133
+#define EVP_R_INVALID_PEER_KEY 134
+#define EVP_R_NOT_XOF_OR_INVALID_LENGTH 135
+
+#endif  // OPENSSL_HEADER_EVP_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.grpc_back
new file mode 100644
index 0000000..d5d102e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/evp.h.grpc_back	
@@ -0,0 +1,1048 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_EVP_H
+#define OPENSSL_HEADER_EVP_H
+
+#include <openssl/base.h>
+
+#include <openssl/thread.h>
+
+// OpenSSL included digest and cipher functions in this header so we include
+// them for users that still expect that.
+//
+// TODO(fork): clean up callers so that they include what they use.
+#include <openssl/aead.h>
+#include <openssl/base64.h>
+#include <openssl/cipher.h>
+#include <openssl/digest.h>
+#include <openssl/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// EVP abstracts over public/private key algorithms.
+
+
+// Public key objects.
+//
+// An |EVP_PKEY| object represents a public or private key. A given object may
+// be used concurrently on multiple threads by non-mutating functions, provided
+// no other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// EVP_PKEY_new creates a new, empty public-key object and returns it or NULL
+// on allocation failure.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new(void);
+
+// EVP_PKEY_free frees all data referenced by |pkey| and then frees |pkey|
+// itself.
+OPENSSL_EXPORT void EVP_PKEY_free(EVP_PKEY *pkey);
+
+// EVP_PKEY_up_ref increments the reference count of |pkey| and returns one. It
+// does not mutate |pkey| for thread-safety purposes and may be used
+// concurrently.
+OPENSSL_EXPORT int EVP_PKEY_up_ref(EVP_PKEY *pkey);
+
+// EVP_PKEY_is_opaque returns one if |pkey| is opaque. Opaque keys are backed by
+// custom implementations which do not expose key material and parameters. It is
+// an error to attempt to duplicate, export, or compare an opaque key.
+OPENSSL_EXPORT int EVP_PKEY_is_opaque(const EVP_PKEY *pkey);
+
+// EVP_PKEY_cmp compares |a| and |b| and returns one if they are equal, zero if
+// not and a negative number on error.
+//
+// WARNING: this differs from the traditional return value of a "cmp"
+// function.
+OPENSSL_EXPORT int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
+
+// EVP_PKEY_copy_parameters sets the parameters of |to| to equal the parameters
+// of |from|. It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
+
+// EVP_PKEY_missing_parameters returns one if |pkey| is missing needed
+// parameters or zero if not, or if the algorithm doesn't take parameters.
+OPENSSL_EXPORT int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
+
+// EVP_PKEY_size returns the maximum size, in bytes, of a signature signed by
+// |pkey|. For an RSA key, this returns the number of bytes needed to represent
+// the modulus. For an EC key, this returns the maximum size of a DER-encoded
+// ECDSA signature.
+OPENSSL_EXPORT int EVP_PKEY_size(const EVP_PKEY *pkey);
+
+// EVP_PKEY_bits returns the "size", in bits, of |pkey|. For an RSA key, this
+// returns the bit length of the modulus. For an EC key, this returns the bit
+// length of the group order.
+OPENSSL_EXPORT int EVP_PKEY_bits(const EVP_PKEY *pkey);
+
+// EVP_PKEY_id returns the type of |pkey|, which is one of the |EVP_PKEY_*|
+// values.
+OPENSSL_EXPORT int EVP_PKEY_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_type returns |nid| if |nid| is a known key type and |NID_undef|
+// otherwise.
+OPENSSL_EXPORT int EVP_PKEY_type(int nid);
+
+
+// Getting and setting concrete public key types.
+//
+// The following functions get and set the underlying public key in an
+// |EVP_PKEY| object. The |set1| functions take an additional reference to the
+// underlying key and return one on success or zero if |key| is NULL. The
+// |assign| functions adopt the caller's reference and return one on success or
+// zero if |key| is NULL. The |get1| functions return a fresh reference to the
+// underlying object or NULL if |pkey| is not of the correct type. The |get0|
+// functions behave the same but return a non-owning pointer.
+//
+// The |get0| and |get1| functions take |const| pointers and are thus
+// non-mutating for thread-safety purposes, but mutating functions on the
+// returned lower-level objects are considered to also mutate the |EVP_PKEY| and
+// may not be called concurrently with other operations on the |EVP_PKEY|.
+
+OPENSSL_EXPORT int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key);
+OPENSSL_EXPORT RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key);
+OPENSSL_EXPORT DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey);
+OPENSSL_EXPORT DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey);
+OPENSSL_EXPORT EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey);
+
+#define EVP_PKEY_NONE NID_undef
+#define EVP_PKEY_RSA NID_rsaEncryption
+#define EVP_PKEY_RSA_PSS NID_rsassaPss
+#define EVP_PKEY_DSA NID_dsa
+#define EVP_PKEY_EC NID_X9_62_id_ecPublicKey
+#define EVP_PKEY_ED25519 NID_ED25519
+#define EVP_PKEY_X25519 NID_X25519
+
+// EVP_PKEY_assign sets the underlying key of |pkey| to |key|, which must be of
+// the given type. It returns one if successful or zero if the |type| argument
+// is not one of the |EVP_PKEY_*| values or if |key| is NULL.
+OPENSSL_EXPORT int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
+
+// EVP_PKEY_set_type sets the type of |pkey| to |type|. It returns one if
+// successful or zero if the |type| argument is not one of the |EVP_PKEY_*|
+// values. If |pkey| is NULL, it simply reports whether the type is known.
+OPENSSL_EXPORT int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
+
+// EVP_PKEY_cmp_parameters compares the parameters of |a| and |b|. It returns
+// one if they match, zero if not, or a negative number of on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_cmp_parameters(const EVP_PKEY *a,
+                                           const EVP_PKEY *b);
+
+
+// ASN.1 functions
+
+// EVP_parse_public_key decodes a DER-encoded SubjectPublicKeyInfo structure
+// (RFC 5280) from |cbs| and advances |cbs|. It returns a newly-allocated
+// |EVP_PKEY| or NULL on error. If the key is an EC key, the curve is guaranteed
+// to be set.
+//
+// The caller must check the type of the parsed public key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_public_key(CBS *cbs);
+
+// EVP_marshal_public_key marshals |key| as a DER-encoded SubjectPublicKeyInfo
+// structure (RFC 5280) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key);
+
+// EVP_parse_private_key decodes a DER-encoded PrivateKeyInfo structure (RFC
+// 5208) from |cbs| and advances |cbs|. It returns a newly-allocated |EVP_PKEY|
+// or NULL on error.
+//
+// The caller must check the type of the parsed private key to ensure it is
+// suitable and validate other desired key properties such as RSA modulus size
+// or EC curve.
+//
+// A PrivateKeyInfo ends with an optional set of attributes. These are not
+// processed and so this function will silently ignore any trailing data in the
+// structure.
+OPENSSL_EXPORT EVP_PKEY *EVP_parse_private_key(CBS *cbs);
+
+// EVP_marshal_private_key marshals |key| as a DER-encoded PrivateKeyInfo
+// structure (RFC 5208) and appends the result to |cbb|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key);
+
+
+// Raw keys
+//
+// Some keys types support a "raw" serialization. Currently the only supported
+// raw format is Ed25519, where the public key and private key formats are those
+// specified in RFC 8032. Note the RFC 8032 private key format is the 32-byte
+// prefix of |ED25519_sign|'s 64-byte private key.
+
+// EVP_PKEY_new_raw_private_key returns a newly allocated |EVP_PKEY| wrapping a
+// private key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
+                                                      const uint8_t *in,
+                                                      size_t len);
+
+// EVP_PKEY_new_raw_public_key returns a newly allocated |EVP_PKEY| wrapping a
+// public key of the specified type. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
+                                                     const uint8_t *in,
+                                                     size_t len);
+
+// EVP_PKEY_get_raw_private_key outputs the private key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw private key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no private key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey,
+                                                uint8_t *out, size_t *out_len);
+
+// EVP_PKEY_get_raw_public_key outputs the public key for |pkey| in raw form.
+// If |out| is NULL, it sets |*out_len| to the size of the raw public key.
+// Otherwise, it writes at most |*out_len| bytes to |out| and sets |*out_len| to
+// the number of bytes written.
+//
+// It returns one on success and zero if |pkey| has no public key, the key
+// type does not support a raw format, or the buffer is too small.
+OPENSSL_EXPORT int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey,
+                                               uint8_t *out, size_t *out_len);
+
+
+// Signing
+
+// EVP_DigestSignInit sets up |ctx| for a signing operation with |type| and
+// |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestSign|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                      const EVP_MD *type, ENGINE *e,
+                                      EVP_PKEY *pkey);
+
+// EVP_DigestSignUpdate appends |len| bytes from |data| to the data which will
+// be signed in |EVP_DigestSignFinal|. It returns one.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+OPENSSL_EXPORT int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                        size_t len);
+
+// EVP_DigestSignFinal signs the data that has been included by one or more
+// calls to |EVP_DigestSignUpdate|. If |out_sig| is NULL then |*out_sig_len| is
+// set to the maximum number of output bytes. Otherwise, on entry,
+// |*out_sig_len| must contain the length of the |out_sig| buffer. If the call
+// is successful, the signature is written to |out_sig| and |*out_sig_len| is
+// set to its length.
+//
+// This function performs a streaming signing operation and will fail for
+// signature algorithms which do not support this. Use |EVP_DigestSign| for a
+// single-shot operation.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestSignFinal(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                       size_t *out_sig_len);
+
+// EVP_DigestSign signs |data_len| bytes from |data| using |ctx|. If |out_sig|
+// is NULL then |*out_sig_len| is set to the maximum number of output
+// bytes. Otherwise, on entry, |*out_sig_len| must contain the length of the
+// |out_sig| buffer. If the call is successful, the signature is written to
+// |out_sig| and |*out_sig_len| is set to its length.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_DigestSign(EVP_MD_CTX *ctx, uint8_t *out_sig,
+                                  size_t *out_sig_len, const uint8_t *data,
+                                  size_t data_len);
+
+
+// Verifying
+
+// EVP_DigestVerifyInit sets up |ctx| for a signature verification operation
+// with |type| and |pkey|. The |ctx| argument must have been initialised with
+// |EVP_MD_CTX_init|. If |pctx| is not NULL, the |EVP_PKEY_CTX| of the signing
+// operation will be written to |*pctx|; this can be used to set alternative
+// signing options.
+//
+// For single-shot signing algorithms which do not use a pre-hash, such as
+// Ed25519, |type| should be NULL. The |EVP_MD_CTX| itself is unused but is
+// present so the API is uniform. See |EVP_DigestVerify|.
+//
+// This function does not mutate |pkey| for thread-safety purposes and may be
+// used concurrently with other non-mutating functions on |pkey|.
+//
+// It returns one on success, or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+                                        const EVP_MD *type, ENGINE *e,
+                                        EVP_PKEY *pkey);
+
+// EVP_DigestVerifyUpdate appends |len| bytes from |data| to the data which
+// will be verified by |EVP_DigestVerifyFinal|. It returns one.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                          size_t len);
+
+// EVP_DigestVerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature for the data that has been included by one or more calls to
+// |EVP_DigestVerifyUpdate|. It returns one on success and zero otherwise.
+//
+// This function performs streaming signature verification and will fail for
+// signature algorithms which do not support this. Use |EVP_PKEY_verify_message|
+// for a single-shot verification.
+OPENSSL_EXPORT int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                         size_t sig_len);
+
+// EVP_DigestVerify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |data|. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_DigestVerify(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                    size_t sig_len, const uint8_t *data,
+                                    size_t len);
+
+
+// Signing (old functions)
+
+// EVP_SignInit_ex configures |ctx|, which must already have been initialised,
+// for a fresh signing operation using the hash function |type|. It returns one
+// on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                   ENGINE *impl);
+
+// EVP_SignInit is a deprecated version of |EVP_SignInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_SignUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_SignFinal|.
+OPENSSL_EXPORT int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data,
+                                  size_t len);
+
+// EVP_SignFinal signs the data that has been included by one or more calls to
+// |EVP_SignUpdate|, using the key |pkey|, and writes it to |sig|. On entry,
+// |sig| must point to at least |EVP_PKEY_size(pkey)| bytes of space. The
+// actual size of the signature is written to |*out_sig_len|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to sign a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
+                                 unsigned int *out_sig_len, EVP_PKEY *pkey);
+
+
+// Verifying (old functions)
+
+// EVP_VerifyInit_ex configures |ctx|, which must already have been
+// initialised, for a fresh signature verification operation using the hash
+// function |type|. It returns one on success and zero otherwise.
+//
+// (In order to initialise |ctx|, either obtain it initialised with
+// |EVP_MD_CTX_create|, or use |EVP_MD_CTX_init|.)
+OPENSSL_EXPORT int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
+                                     ENGINE *impl);
+
+// EVP_VerifyInit is a deprecated version of |EVP_VerifyInit_ex|.
+//
+// TODO(fork): remove.
+OPENSSL_EXPORT int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+
+// EVP_VerifyUpdate appends |len| bytes from |data| to the data which will be
+// signed in |EVP_VerifyFinal|.
+OPENSSL_EXPORT int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data,
+                                    size_t len);
+
+// EVP_VerifyFinal verifies that |sig_len| bytes of |sig| are a valid
+// signature, by |pkey|, for the data that has been included by one or more
+// calls to |EVP_VerifyUpdate|.
+//
+// It returns one on success and zero otherwise.
+//
+// It does not modify |ctx|, thus it's possible to continue to use |ctx| in
+// order to verify a longer message. It also does not mutate |pkey| for
+// thread-safety purposes and may be used concurrently with other non-mutating
+// functions on |pkey|.
+OPENSSL_EXPORT int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, EVP_PKEY *pkey);
+
+
+// Printing
+
+// EVP_PKEY_print_public prints a textual representation of the public key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_private prints a textual representation of the private key in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
+                                          int indent, ASN1_PCTX *pctx);
+
+// EVP_PKEY_print_params prints a textual representation of the parameters in
+// |pkey| to |out|. Returns one on success or zero otherwise.
+OPENSSL_EXPORT int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
+                                         int indent, ASN1_PCTX *pctx);
+
+
+// Password stretching.
+//
+// Password stretching functions take a low-entropy password and apply a slow
+// function that results in a key suitable for use in symmetric
+// cryptography.
+
+// PKCS5_PBKDF2_HMAC computes |iterations| iterations of PBKDF2 of |password|
+// and |salt|, using |digest|, and outputs |key_len| bytes to |out_key|. It
+// returns one on success and zero on allocation failure or if iterations is 0.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC(const char *password, size_t password_len,
+                                     const uint8_t *salt, size_t salt_len,
+                                     unsigned iterations, const EVP_MD *digest,
+                                     size_t key_len, uint8_t *out_key);
+
+// PKCS5_PBKDF2_HMAC_SHA1 is the same as PKCS5_PBKDF2_HMAC, but with |digest|
+// fixed to |EVP_sha1|.
+OPENSSL_EXPORT int PKCS5_PBKDF2_HMAC_SHA1(const char *password,
+                                          size_t password_len,
+                                          const uint8_t *salt, size_t salt_len,
+                                          unsigned iterations, size_t key_len,
+                                          uint8_t *out_key);
+
+// EVP_PBE_scrypt expands |password| into a secret key of length |key_len| using
+// scrypt, as described in RFC 7914, and writes the result to |out_key|. It
+// returns one on success and zero on allocation failure, if the memory required
+// for the operation exceeds |max_mem|, or if any of the parameters are invalid
+// as described below.
+//
+// |N|, |r|, and |p| are as described in RFC 7914 section 6. They determine the
+// cost of the operation. If |max_mem| is zero, a defult limit of 32MiB will be
+// used.
+//
+// The parameters are considered invalid under any of the following conditions:
+// - |r| or |p| are zero
+// - |p| > (2^30 - 1) / |r|
+// - |N| is not a power of two
+// - |N| > 2^32
+// - |N| > 2^(128 * |r| / 8)
+OPENSSL_EXPORT int EVP_PBE_scrypt(const char *password, size_t password_len,
+                                  const uint8_t *salt, size_t salt_len,
+                                  uint64_t N, uint64_t r, uint64_t p,
+                                  size_t max_mem, uint8_t *out_key,
+                                  size_t key_len);
+
+
+// Public key contexts.
+//
+// |EVP_PKEY_CTX| objects hold the context of an operation (e.g. signing or
+// encrypting) that uses a public key.
+
+// EVP_PKEY_CTX_new allocates a fresh |EVP_PKEY_CTX| for use with |pkey|. It
+// returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
+
+// EVP_PKEY_CTX_new_id allocates a fresh |EVP_PKEY_CTX| for a key of type |id|
+// (e.g. |EVP_PKEY_HMAC|). This can be used for key generation where
+// |EVP_PKEY_CTX_new| can't be used because there isn't an |EVP_PKEY| to pass
+// it. It returns the context or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
+
+// EVP_PKEY_CTX_free frees |ctx| and the data it owns.
+OPENSSL_EXPORT void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_dup allocates a fresh |EVP_PKEY_CTX| and sets it equal to the
+// state of |ctx|. It returns the fresh |EVP_PKEY_CTX| or NULL on error.
+OPENSSL_EXPORT EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_CTX_get0_pkey returns the |EVP_PKEY| associated with |ctx|.
+OPENSSL_EXPORT EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign_init initialises an |EVP_PKEY_CTX| for a signing operation. It
+// should be called before |EVP_PKEY_sign|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_sign signs |digest_len| bytes from |digest| using |ctx|. If |sig| is
+// NULL, the maximum size of the signature is written to
+// |out_sig_len|. Otherwise, |*sig_len| must contain the number of bytes of
+// space available at |sig|. If sufficient, the signature will be written to
+// |sig| and |*sig_len| updated with the true length.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestSignInit| to sign an
+// unhashed input.
+//
+// WARNING: Setting |sig| to NULL only gives the maximum size of the
+// signature. The actual signature may be smaller.
+//
+// It returns one on success or zero on error. (Note: this differs from
+// OpenSSL, which can also return negative values to indicate an error. )
+OPENSSL_EXPORT int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig,
+                                 size_t *sig_len, const uint8_t *digest,
+                                 size_t digest_len);
+
+// EVP_PKEY_verify_init initialises an |EVP_PKEY_CTX| for a signature
+// verification operation. It should be called before |EVP_PKEY_verify|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify verifies that |sig_len| bytes from |sig| are a valid
+// signature for |digest|.
+//
+// This function expects a pre-hashed input and will fail for signature
+// algorithms which do not support this. Use |EVP_DigestVerifyInit| to verify a
+// signature given the unhashed input.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig,
+                                   size_t sig_len, const uint8_t *digest,
+                                   size_t digest_len);
+
+// EVP_PKEY_encrypt_init initialises an |EVP_PKEY_CTX| for an encryption
+// operation. It should be called before |EVP_PKEY_encrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_encrypt encrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the ciphertext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// ciphertext. The actual ciphertext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_decrypt_init initialises an |EVP_PKEY_CTX| for a decryption
+// operation. It should be called before |EVP_PKEY_decrypt|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_decrypt decrypts |in_len| bytes from |in|. If |out| is NULL, the
+// maximum size of the plaintext is written to |out_len|. Otherwise, |*out_len|
+// must contain the number of bytes of space available at |out|. If sufficient,
+// the ciphertext will be written to |out| and |*out_len| updated with the true
+// length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                    size_t *out_len, const uint8_t *in,
+                                    size_t in_len);
+
+// EVP_PKEY_verify_recover_init initialises an |EVP_PKEY_CTX| for a public-key
+// decryption operation. It should be called before |EVP_PKEY_verify_recover|.
+//
+// Public-key decryption is a very obscure operation that is only implemented
+// by RSA keys. It is effectively a signature verification operation that
+// returns the signed message directly. It is almost certainly not what you
+// want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_verify_recover decrypts |sig_len| bytes from |sig|. If |out| is
+// NULL, the maximum size of the plaintext is written to |out_len|. Otherwise,
+// |*out_len| must contain the number of bytes of space available at |out|. If
+// sufficient, the ciphertext will be written to |out| and |*out_len| updated
+// with the true length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the
+// plaintext. The actual plaintext may be smaller.
+//
+// See the warning about this operation in |EVP_PKEY_verify_recover_init|. It
+// is probably not what you want.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out,
+                                           size_t *out_len, const uint8_t *sig,
+                                           size_t siglen);
+
+// EVP_PKEY_derive_init initialises an |EVP_PKEY_CTX| for a key derivation
+// operation. It should be called before |EVP_PKEY_derive_set_peer| and
+// |EVP_PKEY_derive|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_derive_set_peer sets the peer's key to be used for key derivation
+// by |ctx| to |peer|. It should be called after |EVP_PKEY_derive_init|. (For
+// example, this is used to set the peer's key in (EC)DH.) It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
+
+// EVP_PKEY_derive derives a shared key between the two keys configured in
+// |ctx|. If |key| is non-NULL then, on entry, |out_key_len| must contain the
+// amount of space at |key|. If sufficient then the shared key will be written
+// to |key| and |*out_key_len| will be set to the length. If |key| is NULL then
+// |out_key_len| will be set to the maximum length.
+//
+// WARNING: Setting |out| to NULL only gives the maximum size of the key. The
+// actual key may be smaller.
+//
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key,
+                                   size_t *out_key_len);
+
+// EVP_PKEY_keygen_init initialises an |EVP_PKEY_CTX| for a key generation
+// operation. It should be called before |EVP_PKEY_keygen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_keygen performs a key generation operation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting key. Otherwise, it sets |*out_pkey| to a newly-allocated |EVP_PKEY|
+// containing the result. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+// EVP_PKEY_paramgen_init initialises an |EVP_PKEY_CTX| for a parameter
+// generation operation. It should be called before |EVP_PKEY_paramgen|.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
+
+// EVP_PKEY_paramgen performs a parameter generation using the values from
+// |ctx|. If |*out_pkey| is non-NULL, it overwrites |*out_pkey| with the
+// resulting parameters, but no key. Otherwise, it sets |*out_pkey| to a
+// newly-allocated |EVP_PKEY| containing the result. It returns one on success
+// or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **out_pkey);
+
+
+// Generic control functions.
+
+// EVP_PKEY_CTX_set_signature_md sets |md| as the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_signature_md sets |*out_md| to the digest to be used in a
+// signature operation. It returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx,
+                                                 const EVP_MD **out_md);
+
+
+// RSA specific control functions.
+
+// EVP_PKEY_CTX_set_rsa_padding sets the padding type to use. It should be one
+// of the |RSA_*_PADDING| values. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int padding);
+
+// EVP_PKEY_CTX_get_rsa_padding sets |*out_padding| to the current padding
+// value, which is one of the |RSA_*_PADDING| values. Returns one on success or
+// zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx,
+                                                int *out_padding);
+
+// EVP_PKEY_CTX_set_rsa_pss_saltlen sets the length of the salt in a PSS-padded
+// signature. A value of -1 cause the salt to be the same length as the digest
+// in the signature. A value of -2 causes the salt to be the maximum length
+// that will fit when signing and recovered from the signature when verifying.
+// Otherwise the value gives the size of the salt in bytes.
+//
+// If unsure, use -1.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int salt_len);
+
+// EVP_PKEY_CTX_get_rsa_pss_saltlen sets |*out_salt_len| to the salt length of
+// a PSS-padded signature. See the documentation for
+// |EVP_PKEY_CTX_set_rsa_pss_saltlen| for details of the special values that it
+// can take.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx,
+                                                    int *out_salt_len);
+
+// EVP_PKEY_CTX_set_rsa_keygen_bits sets the size of the desired RSA modulus,
+// in bits, for key generation. Returns one on success or zero on
+// error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx,
+                                                    int bits);
+
+// EVP_PKEY_CTX_set_rsa_keygen_pubexp sets |e| as the public exponent for key
+// generation. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx,
+                                                      BIGNUM *e);
+
+// EVP_PKEY_CTX_set_rsa_oaep_md sets |md| as the digest used in OAEP padding.
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_oaep_md sets |*out_md| to the digest function used in
+// OAEP padding. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set_rsa_mgf1_md sets |md| as the digest used in MGF1. Returns
+// one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD *md);
+
+// EVP_PKEY_CTX_get_rsa_mgf1_md sets |*out_md| to the digest function used in
+// MGF1. Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                const EVP_MD **out_md);
+
+// EVP_PKEY_CTX_set0_rsa_oaep_label sets |label_len| bytes from |label| as the
+// label used in OAEP. DANGER: On success, this call takes ownership of |label|
+// and will call |OPENSSL_free| on it when |ctx| is destroyed.
+//
+// Returns one on success or zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    uint8_t *label,
+                                                    size_t label_len);
+
+// EVP_PKEY_CTX_get0_rsa_oaep_label sets |*out_label| to point to the internal
+// buffer containing the OAEP label (which may be NULL) and returns the length
+// of the label or a negative value on error.
+//
+// WARNING: the return value differs from the usual return value convention.
+OPENSSL_EXPORT int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx,
+                                                    const uint8_t **out_label);
+
+
+// EC specific control functions.
+
+// EVP_PKEY_CTX_set_ec_paramgen_curve_nid sets the curve used for
+// |EVP_PKEY_keygen| or |EVP_PKEY_paramgen| operations to |nid|. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx,
+                                                          int nid);
+
+
+// Deprecated functions.
+
+// EVP_PKEY_DH is defined for compatibility, but it is impossible to create an
+// |EVP_PKEY| of that type.
+#define EVP_PKEY_DH NID_dhKeyAgreement
+
+// EVP_PKEY_RSA2 was historically an alternate form for RSA public keys (OID
+// 2.5.8.1.1), but is no longer accepted.
+#define EVP_PKEY_RSA2 NID_rsa
+
+// EVP_PKEY_X448 is defined for OpenSSL compatibility, but we do not support
+// X448 and attempts to create keys will fail.
+#define EVP_PKEY_X448 NID_X448
+
+// EVP_PKEY_ED448 is defined for OpenSSL compatibility, but we do not support
+// Ed448 and attempts to create keys will fail.
+#define EVP_PKEY_ED448 NID_ED448
+
+// OpenSSL_add_all_algorithms does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_algorithms(void);
+
+// OPENSSL_add_all_algorithms_conf does nothing.
+OPENSSL_EXPORT void OPENSSL_add_all_algorithms_conf(void);
+
+// OpenSSL_add_all_ciphers does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_ciphers(void);
+
+// OpenSSL_add_all_digests does nothing.
+OPENSSL_EXPORT void OpenSSL_add_all_digests(void);
+
+// EVP_cleanup does nothing.
+OPENSSL_EXPORT void EVP_cleanup(void);
+
+OPENSSL_EXPORT void EVP_CIPHER_do_all_sorted(
+    void (*callback)(const EVP_CIPHER *cipher, const char *name,
+                     const char *unused, void *arg),
+    void *arg);
+
+OPENSSL_EXPORT void EVP_MD_do_all_sorted(void (*callback)(const EVP_MD *cipher,
+                                                          const char *name,
+                                                          const char *unused,
+                                                          void *arg),
+                                         void *arg);
+
+// i2d_PrivateKey marshals a private key from |key| to an ASN.1, DER
+// structure. If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as a DER-encoded ECPrivateKey (RFC 5915) structure.
+//
+// Use |RSA_marshal_private_key| or |EC_KEY_marshal_private_key| instead.
+OPENSSL_EXPORT int i2d_PrivateKey(const EVP_PKEY *key, uint8_t **outp);
+
+// i2d_PublicKey marshals a public key from |key| to a type-specific format.
+// If |outp| is not NULL then the result is written to |*outp| and
+// |*outp| is advanced just past the output. It returns the number of bytes in
+// the result, whether written or not, or a negative value on error.
+//
+// RSA keys are serialized as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// EC keys are serialized as an EC point per SEC 1.
+//
+// Use |RSA_marshal_public_key| or |EC_POINT_point2cbb| instead.
+OPENSSL_EXPORT int i2d_PublicKey(const EVP_PKEY *key, uint8_t **outp);
+
+// d2i_PrivateKey parses an ASN.1, DER-encoded, private key from |len| bytes at
+// |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+// |*out|. Note that, even if |*out| is already non-NULL on entry, it will not
+// be written to. Rather, a fresh |EVP_PKEY| is allocated and the previous one
+// is freed. On successful exit, |*inp| is advanced past the DER structure. It
+// returns the result or NULL on error.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out,
+                                        const uint8_t **inp, long len);
+
+// d2i_AutoPrivateKey acts the same as |d2i_PrivateKey|, but detects the type
+// of the private key.
+//
+// This function tries to detect one of several formats. Instead, use
+// |EVP_parse_private_key| for a PrivateKeyInfo, |RSA_parse_private_key| for an
+// RSAPrivateKey, and |EC_parse_private_key| for an ECPrivateKey.
+OPENSSL_EXPORT EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp,
+                                            long len);
+
+// d2i_PublicKey parse a public key from |len| bytes at |*inp| in a type-
+// specific format specified by |type|. If |out| is not NULL then, on exit, a
+// pointer to the result is in |*out|. Note that, even if |*out| is already non-
+// NULL on entry, it will not be written to. Rather, a fresh |EVP_PKEY| is
+// allocated and the previous one is freed. On successful exit, |*inp| is
+// advanced past the decoded key. It returns the result or NULL on error.
+//
+// RSA keys are parsed as a DER-encoded RSAPublicKey (RFC 3447) structure.
+// Parsing EC keys is not supported by this function.
+//
+// Use |RSA_parse_public_key| instead.
+OPENSSL_EXPORT EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **out,
+                                       const uint8_t **inp, long len);
+
+// EVP_PKEY_get0_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_get1_DH returns NULL.
+OPENSSL_EXPORT DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_ec_param_enc returns one if |encoding| is
+// |OPENSSL_EC_NAMED_CURVE| or zero with an error otherwise.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx,
+                                                 int encoding);
+
+// EVP_PKEY_set1_tls_encodedpoint replaces |pkey| with a public key encoded by
+// |in|. It returns one on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
+                                                  const uint8_t *in,
+                                                  size_t len);
+
+// EVP_PKEY_get1_tls_encodedpoint sets |*out_ptr| to a newly-allocated buffer
+// containing the raw encoded public key for |pkey|. The caller must call
+// |OPENSSL_free| to release this buffer. The function returns the length of the
+// buffer on success and zero on error.
+//
+// This function only works on X25519 keys.
+OPENSSL_EXPORT size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey,
+                                                     uint8_t **out_ptr);
+
+// EVP_PKEY_base_id calls |EVP_PKEY_id|.
+OPENSSL_EXPORT int EVP_PKEY_base_id(const EVP_PKEY *pkey);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx,
+                                                      const EVP_MD *md);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx,
+                                                           int salt_len);
+
+// EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md returns 0.
+OPENSSL_EXPORT int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx,
+                                                           const EVP_MD *md);
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+#endif
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define EVPerr(function, reason) \
+  ERR_put_error(ERR_LIB_EVP, 0, reason, __FILE__, __LINE__)
+
+
+// Private structures.
+
+struct evp_pkey_st {
+  CRYPTO_refcount_t references;
+
+  // type contains one of the EVP_PKEY_* values or NID_undef and determines
+  // which element (if any) of the |pkey| union is valid.
+  int type;
+
+  union {
+    void *ptr;
+    RSA *rsa;
+    DSA *dsa;
+    DH *dh;
+    EC_KEY *ec;
+  } pkey;
+
+  // ameth contains a pointer to a method table that contains many ASN.1
+  // methods for the key type.
+  const EVP_PKEY_ASN1_METHOD *ameth;
+} /* EVP_PKEY */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(EVP_PKEY, EVP_PKEY_free)
+BORINGSSL_MAKE_UP_REF(EVP_PKEY, EVP_PKEY_up_ref)
+BORINGSSL_MAKE_DELETER(EVP_PKEY_CTX, EVP_PKEY_CTX_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define EVP_R_BUFFER_TOO_SMALL 100
+#define EVP_R_COMMAND_NOT_SUPPORTED 101
+#define EVP_R_DECODE_ERROR 102
+#define EVP_R_DIFFERENT_KEY_TYPES 103
+#define EVP_R_DIFFERENT_PARAMETERS 104
+#define EVP_R_ENCODE_ERROR 105
+#define EVP_R_EXPECTING_AN_EC_KEY_KEY 106
+#define EVP_R_EXPECTING_AN_RSA_KEY 107
+#define EVP_R_EXPECTING_A_DSA_KEY 108
+#define EVP_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE 109
+#define EVP_R_INVALID_DIGEST_LENGTH 110
+#define EVP_R_INVALID_DIGEST_TYPE 111
+#define EVP_R_INVALID_KEYBITS 112
+#define EVP_R_INVALID_MGF1_MD 113
+#define EVP_R_INVALID_OPERATION 114
+#define EVP_R_INVALID_PADDING_MODE 115
+#define EVP_R_INVALID_PSS_SALTLEN 116
+#define EVP_R_KEYS_NOT_SET 117
+#define EVP_R_MISSING_PARAMETERS 118
+#define EVP_R_NO_DEFAULT_DIGEST 119
+#define EVP_R_NO_KEY_SET 120
+#define EVP_R_NO_MDC2_SUPPORT 121
+#define EVP_R_NO_NID_FOR_CURVE 122
+#define EVP_R_NO_OPERATION_SET 123
+#define EVP_R_NO_PARAMETERS_SET 124
+#define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE 125
+#define EVP_R_OPERATON_NOT_INITIALIZED 126
+#define EVP_R_UNKNOWN_PUBLIC_KEY_TYPE 127
+#define EVP_R_UNSUPPORTED_ALGORITHM 128
+#define EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE 129
+#define EVP_R_NOT_A_PRIVATE_KEY 130
+#define EVP_R_INVALID_SIGNATURE 131
+#define EVP_R_MEMORY_LIMIT_EXCEEDED 132
+#define EVP_R_INVALID_PARAMETERS 133
+#define EVP_R_INVALID_PEER_KEY 134
+#define EVP_R_NOT_XOF_OR_INVALID_LENGTH 135
+
+#endif  // OPENSSL_HEADER_EVP_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h
new file mode 100644
index 0000000..fbba1c6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h	
@@ -0,0 +1,203 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_EX_DATA_H
+#define OPENSSL_HEADER_EX_DATA_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ex_data is a mechanism for associating arbitrary extra data with objects.
+// For each type of object that supports ex_data, different users can be
+// assigned indexes in which to store their data. Each index has callback
+// functions that are called when an object of that type is freed or
+// duplicated.
+
+
+typedef struct crypto_ex_data_st CRYPTO_EX_DATA;
+
+
+// Type-specific functions.
+//
+// Each type that supports ex_data provides three functions:
+
+#if 0  // Sample
+
+// TYPE_get_ex_new_index allocates a new index for |TYPE|. An optional
+// |free_func| argument may be provided which is called when the owning object
+// is destroyed. See |CRYPTO_EX_free| for details. The |argl| and |argp|
+// arguments are opaque values that are passed to the callback. It returns the
+// new index or a negative number on error.
+OPENSSL_EXPORT int TYPE_get_ex_new_index(long argl, void *argp,
+                                         CRYPTO_EX_unused *unused,
+                                         CRYPTO_EX_dup *dup_unused,
+                                         CRYPTO_EX_free *free_func);
+
+// TYPE_set_ex_data sets an extra data pointer on |t|. The |index| argument
+// should have been returned from a previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT int TYPE_set_ex_data(TYPE *t, int index, void *arg);
+
+// TYPE_get_ex_data returns an extra data pointer for |t|, or NULL if no such
+// pointer exists. The |index| argument should have been returned from a
+// previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT void *TYPE_get_ex_data(const TYPE *t, int index);
+
+#endif  // Sample
+
+
+// Callback types.
+
+// CRYPTO_EX_free is a callback function that is called when an object of the
+// class with extra data pointers is being destroyed. For example, if this
+// callback has been passed to |SSL_get_ex_new_index| then it may be called each
+// time an |SSL*| is destroyed.
+//
+// The callback is passed the new object (i.e. the |SSL*|) in |parent|. The
+// arguments |argl| and |argp| contain opaque values that were given to
+// |CRYPTO_get_ex_new_index|. The callback should return one on success, but
+// the value is ignored.
+//
+// This callback may be called with a NULL value for |ptr| if |parent| has no
+// value set for this index. However, the callbacks may also be skipped entirely
+// if no extra data pointers are set on |parent| at all.
+typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
+                            int index, long argl, void *argp);
+
+
+// Deprecated functions.
+
+// CRYPTO_cleanup_all_ex_data does nothing.
+OPENSSL_EXPORT void CRYPTO_cleanup_all_ex_data(void);
+
+// CRYPTO_EX_dup is a legacy callback function type which is ignored.
+typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
+                          void **from_d, int index, long argl, void *argp);
+
+
+// Private structures.
+
+// CRYPTO_EX_unused is a placeholder for an unused callback. It is aliased to
+// int to ensure non-NULL callers fail to compile rather than fail silently.
+typedef int CRYPTO_EX_unused;
+
+struct crypto_ex_data_st {
+  STACK_OF(void) *sk;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EX_DATA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.back
new file mode 100644
index 0000000..102f8a8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.back	
@@ -0,0 +1,203 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_EX_DATA_H
+#define OPENSSL_HEADER_EX_DATA_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ex_data is a mechanism for associating arbitrary extra data with objects.
+// For each type of object that supports ex_data, different users can be
+// assigned indexes in which to store their data. Each index has callback
+// functions that are called when an object of that type is freed or
+// duplicated.
+
+
+typedef struct crypto_ex_data_st CRYPTO_EX_DATA;
+
+
+// Type-specific functions.
+//
+// Each type that supports ex_data provides three functions:
+
+#if 0  // Sample
+
+// TYPE_get_ex_new_index allocates a new index for |TYPE|. An optional
+// |free_func| argument may be provided which is called when the owning object
+// is destroyed. See |CRYPTO_EX_free| for details. The |argl| and |argp|
+// arguments are opaque values that are passed to the callback. It returns the
+// new index or a negative number on error.
+OPENSSL_EXPORT int TYPE_get_ex_new_index(long argl, void *argp,
+                                         CRYPTO_EX_unused *unused,
+                                         CRYPTO_EX_dup *dup_unused,
+                                         CRYPTO_EX_free *free_func);
+
+// TYPE_set_ex_data sets an extra data pointer on |t|. The |index| argument
+// should have been returned from a previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT int TYPE_set_ex_data(TYPE *t, int index, void *arg);
+
+// TYPE_get_ex_data returns an extra data pointer for |t|, or NULL if no such
+// pointer exists. The |index| argument should have been returned from a
+// previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT void *TYPE_get_ex_data(const TYPE *t, int index);
+
+#endif  // Sample
+
+
+// Callback types.
+
+// CRYPTO_EX_free is a callback function that is called when an object of the
+// class with extra data pointers is being destroyed. For example, if this
+// callback has been passed to |SSL_get_ex_new_index| then it may be called each
+// time an |SSL*| is destroyed.
+//
+// The callback is passed the new object (i.e. the |SSL*|) in |parent|. The
+// arguments |argl| and |argp| contain opaque values that were given to
+// |CRYPTO_get_ex_new_index|. The callback should return one on success, but
+// the value is ignored.
+//
+// This callback may be called with a NULL value for |ptr| if |parent| has no
+// value set for this index. However, the callbacks may also be skipped entirely
+// if no extra data pointers are set on |parent| at all.
+typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
+                            int index, long argl, void *argp);
+
+
+// Deprecated functions.
+
+// CRYPTO_cleanup_all_ex_data does nothing.
+OPENSSL_EXPORT void CRYPTO_cleanup_all_ex_data(void);
+
+// CRYPTO_EX_dup is a legacy callback function type which is ignored.
+typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
+                          void **from_d, int index, long argl, void *argp);
+
+
+// Private structures.
+
+// CRYPTO_EX_unused is a placeholder for an unused callback. It is aliased to
+// int to ensure non-NULL callers fail to compile rather than fail silently.
+typedef int CRYPTO_EX_unused;
+
+struct crypto_ex_data_st {
+  STACK_OF(void) *sk;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EX_DATA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.grpc_back
new file mode 100644
index 0000000..102f8a8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ex_data.h.grpc_back	
@@ -0,0 +1,203 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_EX_DATA_H
+#define OPENSSL_HEADER_EX_DATA_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// ex_data is a mechanism for associating arbitrary extra data with objects.
+// For each type of object that supports ex_data, different users can be
+// assigned indexes in which to store their data. Each index has callback
+// functions that are called when an object of that type is freed or
+// duplicated.
+
+
+typedef struct crypto_ex_data_st CRYPTO_EX_DATA;
+
+
+// Type-specific functions.
+//
+// Each type that supports ex_data provides three functions:
+
+#if 0  // Sample
+
+// TYPE_get_ex_new_index allocates a new index for |TYPE|. An optional
+// |free_func| argument may be provided which is called when the owning object
+// is destroyed. See |CRYPTO_EX_free| for details. The |argl| and |argp|
+// arguments are opaque values that are passed to the callback. It returns the
+// new index or a negative number on error.
+OPENSSL_EXPORT int TYPE_get_ex_new_index(long argl, void *argp,
+                                         CRYPTO_EX_unused *unused,
+                                         CRYPTO_EX_dup *dup_unused,
+                                         CRYPTO_EX_free *free_func);
+
+// TYPE_set_ex_data sets an extra data pointer on |t|. The |index| argument
+// should have been returned from a previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT int TYPE_set_ex_data(TYPE *t, int index, void *arg);
+
+// TYPE_get_ex_data returns an extra data pointer for |t|, or NULL if no such
+// pointer exists. The |index| argument should have been returned from a
+// previous call to |TYPE_get_ex_new_index|.
+OPENSSL_EXPORT void *TYPE_get_ex_data(const TYPE *t, int index);
+
+#endif  // Sample
+
+
+// Callback types.
+
+// CRYPTO_EX_free is a callback function that is called when an object of the
+// class with extra data pointers is being destroyed. For example, if this
+// callback has been passed to |SSL_get_ex_new_index| then it may be called each
+// time an |SSL*| is destroyed.
+//
+// The callback is passed the new object (i.e. the |SSL*|) in |parent|. The
+// arguments |argl| and |argp| contain opaque values that were given to
+// |CRYPTO_get_ex_new_index|. The callback should return one on success, but
+// the value is ignored.
+//
+// This callback may be called with a NULL value for |ptr| if |parent| has no
+// value set for this index. However, the callbacks may also be skipped entirely
+// if no extra data pointers are set on |parent| at all.
+typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
+                            int index, long argl, void *argp);
+
+
+// Deprecated functions.
+
+// CRYPTO_cleanup_all_ex_data does nothing.
+OPENSSL_EXPORT void CRYPTO_cleanup_all_ex_data(void);
+
+// CRYPTO_EX_dup is a legacy callback function type which is ignored.
+typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
+                          void **from_d, int index, long argl, void *argp);
+
+
+// Private structures.
+
+// CRYPTO_EX_unused is a placeholder for an unused callback. It is aliased to
+// int to ensure non-NULL callers fail to compile rather than fail silently.
+typedef int CRYPTO_EX_unused;
+
+struct crypto_ex_data_st {
+  STACK_OF(void) *sk;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_EX_DATA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h
new file mode 100644
index 0000000..fac6965
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h	
@@ -0,0 +1,64 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HKDF_H
+#define OPENSSL_HEADER_HKDF_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HKDF.
+
+
+// HKDF computes HKDF (as specified by RFC 5869) of initial keying material
+// |secret| with |salt| and |info| using |digest|, and outputs |out_len| bytes
+// to |out_key|. It returns one on success and zero on error.
+//
+// HKDF is an Extract-and-Expand algorithm. It does not do any key stretching,
+// and as such, is not suited to be used alone to generate a key from a
+// password.
+OPENSSL_EXPORT int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+                        const uint8_t *secret, size_t secret_len,
+                        const uint8_t *salt, size_t salt_len,
+                        const uint8_t *info, size_t info_len);
+
+// HKDF_extract computes a HKDF PRK (as specified by RFC 5869) from initial
+// keying material |secret| and salt |salt| using |digest|, and outputs
+// |out_len| bytes to |out_key|. The maximum output size is |EVP_MAX_MD_SIZE|.
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_extract(uint8_t *out_key, size_t *out_len,
+                                const EVP_MD *digest, const uint8_t *secret,
+                                size_t secret_len, const uint8_t *salt,
+                                size_t salt_len);
+
+// HKDF_expand computes a HKDF OKM (as specified by RFC 5869) of length
+// |out_len| from the PRK |prk| and info |info| using |digest|, and outputs
+// the result to |out_key|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_expand(uint8_t *out_key, size_t out_len,
+                               const EVP_MD *digest, const uint8_t *prk,
+                               size_t prk_len, const uint8_t *info,
+                               size_t info_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define HKDF_R_OUTPUT_TOO_LARGE 100
+
+#endif  // OPENSSL_HEADER_HKDF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.back
new file mode 100644
index 0000000..59aaa49
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.back	
@@ -0,0 +1,64 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HKDF_H
+#define OPENSSL_HEADER_HKDF_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HKDF.
+
+
+// HKDF computes HKDF (as specified by RFC 5869) of initial keying material
+// |secret| with |salt| and |info| using |digest|, and outputs |out_len| bytes
+// to |out_key|. It returns one on success and zero on error.
+//
+// HKDF is an Extract-and-Expand algorithm. It does not do any key stretching,
+// and as such, is not suited to be used alone to generate a key from a
+// password.
+OPENSSL_EXPORT int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+                        const uint8_t *secret, size_t secret_len,
+                        const uint8_t *salt, size_t salt_len,
+                        const uint8_t *info, size_t info_len);
+
+// HKDF_extract computes a HKDF PRK (as specified by RFC 5869) from initial
+// keying material |secret| and salt |salt| using |digest|, and outputs
+// |out_len| bytes to |out_key|. The maximum output size is |EVP_MAX_MD_SIZE|.
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_extract(uint8_t *out_key, size_t *out_len,
+                                const EVP_MD *digest, const uint8_t *secret,
+                                size_t secret_len, const uint8_t *salt,
+                                size_t salt_len);
+
+// HKDF_expand computes a HKDF OKM (as specified by RFC 5869) of length
+// |out_len| from the PRK |prk| and info |info| using |digest|, and outputs
+// the result to |out_key|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_expand(uint8_t *out_key, size_t out_len,
+                               const EVP_MD *digest, const uint8_t *prk,
+                               size_t prk_len, const uint8_t *info,
+                               size_t info_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define HKDF_R_OUTPUT_TOO_LARGE 100
+
+#endif  // OPENSSL_HEADER_HKDF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.grpc_back
new file mode 100644
index 0000000..59aaa49
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hkdf.h.grpc_back	
@@ -0,0 +1,64 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HKDF_H
+#define OPENSSL_HEADER_HKDF_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HKDF.
+
+
+// HKDF computes HKDF (as specified by RFC 5869) of initial keying material
+// |secret| with |salt| and |info| using |digest|, and outputs |out_len| bytes
+// to |out_key|. It returns one on success and zero on error.
+//
+// HKDF is an Extract-and-Expand algorithm. It does not do any key stretching,
+// and as such, is not suited to be used alone to generate a key from a
+// password.
+OPENSSL_EXPORT int HKDF(uint8_t *out_key, size_t out_len, const EVP_MD *digest,
+                        const uint8_t *secret, size_t secret_len,
+                        const uint8_t *salt, size_t salt_len,
+                        const uint8_t *info, size_t info_len);
+
+// HKDF_extract computes a HKDF PRK (as specified by RFC 5869) from initial
+// keying material |secret| and salt |salt| using |digest|, and outputs
+// |out_len| bytes to |out_key|. The maximum output size is |EVP_MAX_MD_SIZE|.
+// It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_extract(uint8_t *out_key, size_t *out_len,
+                                const EVP_MD *digest, const uint8_t *secret,
+                                size_t secret_len, const uint8_t *salt,
+                                size_t salt_len);
+
+// HKDF_expand computes a HKDF OKM (as specified by RFC 5869) of length
+// |out_len| from the PRK |prk| and info |info| using |digest|, and outputs
+// the result to |out_key|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HKDF_expand(uint8_t *out_key, size_t out_len,
+                               const EVP_MD *digest, const uint8_t *prk,
+                               size_t prk_len, const uint8_t *info,
+                               size_t info_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define HKDF_R_OUTPUT_TOO_LARGE 100
+
+#endif  // OPENSSL_HEADER_HKDF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h
new file mode 100644
index 0000000..8547885
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h	
@@ -0,0 +1,186 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_HMAC_H
+#define OPENSSL_HEADER_HMAC_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/digest.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HMAC contains functions for constructing PRFs from Merkle–Damgård hash
+// functions using HMAC.
+
+
+// One-shot operation.
+
+// HMAC calculates the HMAC of |data_len| bytes of |data|, using the given key
+// and hash function, and writes the result to |out|. On entry, |out| must
+// contain at least |EVP_MD_size| bytes of space. The actual length of the
+// result is written to |*out_len|. An output size of |EVP_MAX_MD_SIZE| will
+// always be large enough. It returns |out| or NULL on error.
+OPENSSL_EXPORT uint8_t *HMAC(const EVP_MD *evp_md, const void *key,
+                             size_t key_len, const uint8_t *data,
+                             size_t data_len, uint8_t *out,
+                             unsigned int *out_len);
+
+
+// Incremental operation.
+
+// HMAC_CTX_init initialises |ctx| for use in an HMAC operation. It's assumed
+// that HMAC_CTX objects will be allocated on the stack thus no allocation
+// function is provided.
+OPENSSL_EXPORT void HMAC_CTX_init(HMAC_CTX *ctx);
+
+// HMAC_CTX_new allocates and initialises a new |HMAC_CTX| and returns it, or
+// NULL on allocation failure. The caller must use |HMAC_CTX_free| to release
+// the resulting object.
+OPENSSL_EXPORT HMAC_CTX *HMAC_CTX_new(void);
+
+// HMAC_CTX_cleanup frees data owned by |ctx|. It does not free |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_cleanup(HMAC_CTX *ctx);
+
+// HMAC_CTX_free calls |HMAC_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_free(HMAC_CTX *ctx);
+
+// HMAC_Init_ex sets up an initialised |HMAC_CTX| to use |md| as the hash
+// function and |key| as the key. For a non-initial call, |md| may be NULL, in
+// which case the previous hash function will be used. If the hash function has
+// not changed and |key| is NULL, |ctx| reuses the previous key. It returns one
+// on success or zero on allocation failure.
+//
+// WARNING: NULL and empty keys are ambiguous on non-initial calls. Passing NULL
+// |key| but repeating the previous |md| reuses the previous key rather than the
+// empty key.
+OPENSSL_EXPORT int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+                                const EVP_MD *md, ENGINE *impl);
+
+// HMAC_Update hashes |data_len| bytes from |data| into the current HMAC
+// operation in |ctx|. It returns one.
+OPENSSL_EXPORT int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data,
+                               size_t data_len);
+
+// HMAC_Final completes the HMAC operation in |ctx| and writes the result to
+// |out| and the sets |*out_len| to the length of the result. On entry, |out|
+// must contain at least |HMAC_size| bytes of space. An output size of
+// |EVP_MAX_MD_SIZE| will always be large enough. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int HMAC_Final(HMAC_CTX *ctx, uint8_t *out,
+                              unsigned int *out_len);
+
+
+// Utility functions.
+
+// HMAC_size returns the size, in bytes, of the HMAC that will be produced by
+// |ctx|. On entry, |ctx| must have been setup with |HMAC_Init_ex|.
+OPENSSL_EXPORT size_t HMAC_size(const HMAC_CTX *ctx);
+
+// HMAC_CTX_copy_ex sets |dest| equal to |src|. On entry, |dest| must have been
+// initialised by calling |HMAC_CTX_init|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int HMAC_CTX_copy_ex(HMAC_CTX *dest, const HMAC_CTX *src);
+
+// HMAC_CTX_reset calls |HMAC_CTX_cleanup| followed by |HMAC_CTX_init|.
+OPENSSL_EXPORT void HMAC_CTX_reset(HMAC_CTX *ctx);
+
+
+// Deprecated functions.
+
+OPENSSL_EXPORT int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len,
+                             const EVP_MD *md);
+
+// HMAC_CTX_copy calls |HMAC_CTX_init| on |dest| and then sets it equal to
+// |src|. On entry, |dest| must /not/ be initialised for an operation with
+// |HMAC_Init_ex|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src);
+
+
+// Private functions
+
+struct hmac_ctx_st {
+  const EVP_MD *md;
+  EVP_MD_CTX md_ctx;
+  EVP_MD_CTX i_ctx;
+  EVP_MD_CTX o_ctx;
+} /* HMAC_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(HMAC_CTX, HMAC_CTX_free)
+
+using ScopedHMAC_CTX =
+    internal::StackAllocated<HMAC_CTX, void, HMAC_CTX_init, HMAC_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_HMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.back
new file mode 100644
index 0000000..b5d1e42
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.back	
@@ -0,0 +1,186 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_HMAC_H
+#define OPENSSL_HEADER_HMAC_H
+
+#include <openssl/base.h>
+
+#include <openssl/digest.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HMAC contains functions for constructing PRFs from Merkle–Damgård hash
+// functions using HMAC.
+
+
+// One-shot operation.
+
+// HMAC calculates the HMAC of |data_len| bytes of |data|, using the given key
+// and hash function, and writes the result to |out|. On entry, |out| must
+// contain at least |EVP_MD_size| bytes of space. The actual length of the
+// result is written to |*out_len|. An output size of |EVP_MAX_MD_SIZE| will
+// always be large enough. It returns |out| or NULL on error.
+OPENSSL_EXPORT uint8_t *HMAC(const EVP_MD *evp_md, const void *key,
+                             size_t key_len, const uint8_t *data,
+                             size_t data_len, uint8_t *out,
+                             unsigned int *out_len);
+
+
+// Incremental operation.
+
+// HMAC_CTX_init initialises |ctx| for use in an HMAC operation. It's assumed
+// that HMAC_CTX objects will be allocated on the stack thus no allocation
+// function is provided.
+OPENSSL_EXPORT void HMAC_CTX_init(HMAC_CTX *ctx);
+
+// HMAC_CTX_new allocates and initialises a new |HMAC_CTX| and returns it, or
+// NULL on allocation failure. The caller must use |HMAC_CTX_free| to release
+// the resulting object.
+OPENSSL_EXPORT HMAC_CTX *HMAC_CTX_new(void);
+
+// HMAC_CTX_cleanup frees data owned by |ctx|. It does not free |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_cleanup(HMAC_CTX *ctx);
+
+// HMAC_CTX_free calls |HMAC_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_free(HMAC_CTX *ctx);
+
+// HMAC_Init_ex sets up an initialised |HMAC_CTX| to use |md| as the hash
+// function and |key| as the key. For a non-initial call, |md| may be NULL, in
+// which case the previous hash function will be used. If the hash function has
+// not changed and |key| is NULL, |ctx| reuses the previous key. It returns one
+// on success or zero on allocation failure.
+//
+// WARNING: NULL and empty keys are ambiguous on non-initial calls. Passing NULL
+// |key| but repeating the previous |md| reuses the previous key rather than the
+// empty key.
+OPENSSL_EXPORT int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+                                const EVP_MD *md, ENGINE *impl);
+
+// HMAC_Update hashes |data_len| bytes from |data| into the current HMAC
+// operation in |ctx|. It returns one.
+OPENSSL_EXPORT int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data,
+                               size_t data_len);
+
+// HMAC_Final completes the HMAC operation in |ctx| and writes the result to
+// |out| and the sets |*out_len| to the length of the result. On entry, |out|
+// must contain at least |HMAC_size| bytes of space. An output size of
+// |EVP_MAX_MD_SIZE| will always be large enough. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int HMAC_Final(HMAC_CTX *ctx, uint8_t *out,
+                              unsigned int *out_len);
+
+
+// Utility functions.
+
+// HMAC_size returns the size, in bytes, of the HMAC that will be produced by
+// |ctx|. On entry, |ctx| must have been setup with |HMAC_Init_ex|.
+OPENSSL_EXPORT size_t HMAC_size(const HMAC_CTX *ctx);
+
+// HMAC_CTX_copy_ex sets |dest| equal to |src|. On entry, |dest| must have been
+// initialised by calling |HMAC_CTX_init|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int HMAC_CTX_copy_ex(HMAC_CTX *dest, const HMAC_CTX *src);
+
+// HMAC_CTX_reset calls |HMAC_CTX_cleanup| followed by |HMAC_CTX_init|.
+OPENSSL_EXPORT void HMAC_CTX_reset(HMAC_CTX *ctx);
+
+
+// Deprecated functions.
+
+OPENSSL_EXPORT int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len,
+                             const EVP_MD *md);
+
+// HMAC_CTX_copy calls |HMAC_CTX_init| on |dest| and then sets it equal to
+// |src|. On entry, |dest| must /not/ be initialised for an operation with
+// |HMAC_Init_ex|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src);
+
+
+// Private functions
+
+struct hmac_ctx_st {
+  const EVP_MD *md;
+  EVP_MD_CTX md_ctx;
+  EVP_MD_CTX i_ctx;
+  EVP_MD_CTX o_ctx;
+} /* HMAC_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(HMAC_CTX, HMAC_CTX_free)
+
+using ScopedHMAC_CTX =
+    internal::StackAllocated<HMAC_CTX, void, HMAC_CTX_init, HMAC_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_HMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.grpc_back
new file mode 100644
index 0000000..b5d1e42
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hmac.h.grpc_back	
@@ -0,0 +1,186 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_HMAC_H
+#define OPENSSL_HEADER_HMAC_H
+
+#include <openssl/base.h>
+
+#include <openssl/digest.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// HMAC contains functions for constructing PRFs from Merkle–Damgård hash
+// functions using HMAC.
+
+
+// One-shot operation.
+
+// HMAC calculates the HMAC of |data_len| bytes of |data|, using the given key
+// and hash function, and writes the result to |out|. On entry, |out| must
+// contain at least |EVP_MD_size| bytes of space. The actual length of the
+// result is written to |*out_len|. An output size of |EVP_MAX_MD_SIZE| will
+// always be large enough. It returns |out| or NULL on error.
+OPENSSL_EXPORT uint8_t *HMAC(const EVP_MD *evp_md, const void *key,
+                             size_t key_len, const uint8_t *data,
+                             size_t data_len, uint8_t *out,
+                             unsigned int *out_len);
+
+
+// Incremental operation.
+
+// HMAC_CTX_init initialises |ctx| for use in an HMAC operation. It's assumed
+// that HMAC_CTX objects will be allocated on the stack thus no allocation
+// function is provided.
+OPENSSL_EXPORT void HMAC_CTX_init(HMAC_CTX *ctx);
+
+// HMAC_CTX_new allocates and initialises a new |HMAC_CTX| and returns it, or
+// NULL on allocation failure. The caller must use |HMAC_CTX_free| to release
+// the resulting object.
+OPENSSL_EXPORT HMAC_CTX *HMAC_CTX_new(void);
+
+// HMAC_CTX_cleanup frees data owned by |ctx|. It does not free |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_cleanup(HMAC_CTX *ctx);
+
+// HMAC_CTX_free calls |HMAC_CTX_cleanup| and then frees |ctx| itself.
+OPENSSL_EXPORT void HMAC_CTX_free(HMAC_CTX *ctx);
+
+// HMAC_Init_ex sets up an initialised |HMAC_CTX| to use |md| as the hash
+// function and |key| as the key. For a non-initial call, |md| may be NULL, in
+// which case the previous hash function will be used. If the hash function has
+// not changed and |key| is NULL, |ctx| reuses the previous key. It returns one
+// on success or zero on allocation failure.
+//
+// WARNING: NULL and empty keys are ambiguous on non-initial calls. Passing NULL
+// |key| but repeating the previous |md| reuses the previous key rather than the
+// empty key.
+OPENSSL_EXPORT int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+                                const EVP_MD *md, ENGINE *impl);
+
+// HMAC_Update hashes |data_len| bytes from |data| into the current HMAC
+// operation in |ctx|. It returns one.
+OPENSSL_EXPORT int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data,
+                               size_t data_len);
+
+// HMAC_Final completes the HMAC operation in |ctx| and writes the result to
+// |out| and the sets |*out_len| to the length of the result. On entry, |out|
+// must contain at least |HMAC_size| bytes of space. An output size of
+// |EVP_MAX_MD_SIZE| will always be large enough. It returns one on success or
+// zero on allocation failure.
+OPENSSL_EXPORT int HMAC_Final(HMAC_CTX *ctx, uint8_t *out,
+                              unsigned int *out_len);
+
+
+// Utility functions.
+
+// HMAC_size returns the size, in bytes, of the HMAC that will be produced by
+// |ctx|. On entry, |ctx| must have been setup with |HMAC_Init_ex|.
+OPENSSL_EXPORT size_t HMAC_size(const HMAC_CTX *ctx);
+
+// HMAC_CTX_copy_ex sets |dest| equal to |src|. On entry, |dest| must have been
+// initialised by calling |HMAC_CTX_init|. It returns one on success and zero
+// on error.
+OPENSSL_EXPORT int HMAC_CTX_copy_ex(HMAC_CTX *dest, const HMAC_CTX *src);
+
+// HMAC_CTX_reset calls |HMAC_CTX_cleanup| followed by |HMAC_CTX_init|.
+OPENSSL_EXPORT void HMAC_CTX_reset(HMAC_CTX *ctx);
+
+
+// Deprecated functions.
+
+OPENSSL_EXPORT int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len,
+                             const EVP_MD *md);
+
+// HMAC_CTX_copy calls |HMAC_CTX_init| on |dest| and then sets it equal to
+// |src|. On entry, |dest| must /not/ be initialised for an operation with
+// |HMAC_Init_ex|. It returns one on success and zero on error.
+OPENSSL_EXPORT int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src);
+
+
+// Private functions
+
+struct hmac_ctx_st {
+  const EVP_MD *md;
+  EVP_MD_CTX md_ctx;
+  EVP_MD_CTX i_ctx;
+  EVP_MD_CTX o_ctx;
+} /* HMAC_CTX */;
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(HMAC_CTX, HMAC_CTX_free)
+
+using ScopedHMAC_CTX =
+    internal::StackAllocated<HMAC_CTX, void, HMAC_CTX_init, HMAC_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+#endif
+
+#endif
+
+#endif  // OPENSSL_HEADER_HMAC_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h
new file mode 100644
index 0000000..7ce7c0f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h	
@@ -0,0 +1,100 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HRSS_H
+#define OPENSSL_HEADER_HRSS_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// HRSS
+//
+// HRSS is a structured-lattice-based post-quantum key encapsulation mechanism.
+// The best exposition is https://eprint.iacr.org/2017/667.pdf although this
+// implementation uses a different KEM construction based on
+// https://eprint.iacr.org/2017/1005.pdf.
+
+struct HRSS_private_key {
+  uint8_t opaque[1808];
+};
+
+struct HRSS_public_key {
+  uint8_t opaque[1424];
+};
+
+// HRSS_SAMPLE_BYTES is the number of bytes of entropy needed to generate a
+// short vector. There are 701 coefficients, but the final one is always set to
+// zero when sampling. Otherwise, we need one byte of input per coefficient.
+#define HRSS_SAMPLE_BYTES (701 - 1)
+// HRSS_GENERATE_KEY_BYTES is the number of bytes of entropy needed to generate
+// an HRSS key pair.
+#define HRSS_GENERATE_KEY_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES + 32)
+// HRSS_ENCAP_BYTES is the number of bytes of entropy needed to encapsulate a
+// session key.
+#define HRSS_ENCAP_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES)
+// HRSS_PUBLIC_KEY_BYTES is the number of bytes in a public key.
+#define HRSS_PUBLIC_KEY_BYTES 1138
+// HRSS_CIPHERTEXT_BYTES is the number of bytes in a ciphertext.
+#define HRSS_CIPHERTEXT_BYTES 1138
+// HRSS_KEY_BYTES is the number of bytes in a shared key.
+#define HRSS_KEY_BYTES 32
+// HRSS_POLY3_BYTES is the number of bytes needed to serialise a mod 3
+// polynomial.
+#define HRSS_POLY3_BYTES 140
+#define HRSS_PRIVATE_KEY_BYTES \
+  (HRSS_POLY3_BYTES * 2 + HRSS_PUBLIC_KEY_BYTES + 2 + 32)
+
+// HRSS_generate_key is a deterministic function that outputs a public and
+// private key based on the given entropy.
+OPENSSL_EXPORT void HRSS_generate_key(
+    struct HRSS_public_key *out_pub, struct HRSS_private_key *out_priv,
+    const uint8_t input[HRSS_GENERATE_KEY_BYTES]);
+
+// HRSS_encap is a deterministic function the generates and encrypts a random
+// session key from the given entropy, writing those values to |out_shared_key|
+// and |out_ciphertext|, respectively.
+OPENSSL_EXPORT void HRSS_encap(uint8_t out_ciphertext[HRSS_CIPHERTEXT_BYTES],
+                               uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_public_key *in_pub,
+                               const uint8_t in[HRSS_ENCAP_BYTES]);
+
+// HRSS_decap decrypts a session key from |ciphertext_len| bytes of
+// |ciphertext|. If the ciphertext is valid, the decrypted key is written to
+// |out_shared_key|. Otherwise the HMAC of |ciphertext| under a secret key (kept
+// in |in_priv|) is written. If the ciphertext is the wrong length then it will
+// leak which was done via side-channels. Otherwise it should perform either
+// action in constant-time.
+OPENSSL_EXPORT void HRSS_decap(uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_private_key *in_priv,
+                               const uint8_t *ciphertext,
+                               size_t ciphertext_len);
+
+// HRSS_marshal_public_key serialises |in_pub| to |out|.
+OPENSSL_EXPORT void HRSS_marshal_public_key(
+    uint8_t out[HRSS_PUBLIC_KEY_BYTES], const struct HRSS_public_key *in_pub);
+
+// HRSS_parse_public_key sets |*out| to the public-key encoded in |in|. It
+// returns true on success and zero on error.
+OPENSSL_EXPORT int HRSS_parse_public_key(
+    struct HRSS_public_key *out, const uint8_t in[HRSS_PUBLIC_KEY_BYTES]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_HRSS_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.back
new file mode 100644
index 0000000..5390696
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.back	
@@ -0,0 +1,100 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HRSS_H
+#define OPENSSL_HEADER_HRSS_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// HRSS
+//
+// HRSS is a structured-lattice-based post-quantum key encapsulation mechanism.
+// The best exposition is https://eprint.iacr.org/2017/667.pdf although this
+// implementation uses a different KEM construction based on
+// https://eprint.iacr.org/2017/1005.pdf.
+
+struct HRSS_private_key {
+  uint8_t opaque[1808];
+};
+
+struct HRSS_public_key {
+  uint8_t opaque[1424];
+};
+
+// HRSS_SAMPLE_BYTES is the number of bytes of entropy needed to generate a
+// short vector. There are 701 coefficients, but the final one is always set to
+// zero when sampling. Otherwise, we need one byte of input per coefficient.
+#define HRSS_SAMPLE_BYTES (701 - 1)
+// HRSS_GENERATE_KEY_BYTES is the number of bytes of entropy needed to generate
+// an HRSS key pair.
+#define HRSS_GENERATE_KEY_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES + 32)
+// HRSS_ENCAP_BYTES is the number of bytes of entropy needed to encapsulate a
+// session key.
+#define HRSS_ENCAP_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES)
+// HRSS_PUBLIC_KEY_BYTES is the number of bytes in a public key.
+#define HRSS_PUBLIC_KEY_BYTES 1138
+// HRSS_CIPHERTEXT_BYTES is the number of bytes in a ciphertext.
+#define HRSS_CIPHERTEXT_BYTES 1138
+// HRSS_KEY_BYTES is the number of bytes in a shared key.
+#define HRSS_KEY_BYTES 32
+// HRSS_POLY3_BYTES is the number of bytes needed to serialise a mod 3
+// polynomial.
+#define HRSS_POLY3_BYTES 140
+#define HRSS_PRIVATE_KEY_BYTES \
+  (HRSS_POLY3_BYTES * 2 + HRSS_PUBLIC_KEY_BYTES + 2 + 32)
+
+// HRSS_generate_key is a deterministic function that outputs a public and
+// private key based on the given entropy.
+OPENSSL_EXPORT void HRSS_generate_key(
+    struct HRSS_public_key *out_pub, struct HRSS_private_key *out_priv,
+    const uint8_t input[HRSS_GENERATE_KEY_BYTES]);
+
+// HRSS_encap is a deterministic function the generates and encrypts a random
+// session key from the given entropy, writing those values to |out_shared_key|
+// and |out_ciphertext|, respectively.
+OPENSSL_EXPORT void HRSS_encap(uint8_t out_ciphertext[HRSS_CIPHERTEXT_BYTES],
+                               uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_public_key *in_pub,
+                               const uint8_t in[HRSS_ENCAP_BYTES]);
+
+// HRSS_decap decrypts a session key from |ciphertext_len| bytes of
+// |ciphertext|. If the ciphertext is valid, the decrypted key is written to
+// |out_shared_key|. Otherwise the HMAC of |ciphertext| under a secret key (kept
+// in |in_priv|) is written. If the ciphertext is the wrong length then it will
+// leak which was done via side-channels. Otherwise it should perform either
+// action in constant-time.
+OPENSSL_EXPORT void HRSS_decap(uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_private_key *in_priv,
+                               const uint8_t *ciphertext,
+                               size_t ciphertext_len);
+
+// HRSS_marshal_public_key serialises |in_pub| to |out|.
+OPENSSL_EXPORT void HRSS_marshal_public_key(
+    uint8_t out[HRSS_PUBLIC_KEY_BYTES], const struct HRSS_public_key *in_pub);
+
+// HRSS_parse_public_key sets |*out| to the public-key encoded in |in|. It
+// returns true on success and zero on error.
+OPENSSL_EXPORT int HRSS_parse_public_key(
+    struct HRSS_public_key *out, const uint8_t in[HRSS_PUBLIC_KEY_BYTES]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_HRSS_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.grpc_back
new file mode 100644
index 0000000..5390696
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/hrss.h.grpc_back	
@@ -0,0 +1,100 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_HRSS_H
+#define OPENSSL_HEADER_HRSS_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// HRSS
+//
+// HRSS is a structured-lattice-based post-quantum key encapsulation mechanism.
+// The best exposition is https://eprint.iacr.org/2017/667.pdf although this
+// implementation uses a different KEM construction based on
+// https://eprint.iacr.org/2017/1005.pdf.
+
+struct HRSS_private_key {
+  uint8_t opaque[1808];
+};
+
+struct HRSS_public_key {
+  uint8_t opaque[1424];
+};
+
+// HRSS_SAMPLE_BYTES is the number of bytes of entropy needed to generate a
+// short vector. There are 701 coefficients, but the final one is always set to
+// zero when sampling. Otherwise, we need one byte of input per coefficient.
+#define HRSS_SAMPLE_BYTES (701 - 1)
+// HRSS_GENERATE_KEY_BYTES is the number of bytes of entropy needed to generate
+// an HRSS key pair.
+#define HRSS_GENERATE_KEY_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES + 32)
+// HRSS_ENCAP_BYTES is the number of bytes of entropy needed to encapsulate a
+// session key.
+#define HRSS_ENCAP_BYTES (HRSS_SAMPLE_BYTES + HRSS_SAMPLE_BYTES)
+// HRSS_PUBLIC_KEY_BYTES is the number of bytes in a public key.
+#define HRSS_PUBLIC_KEY_BYTES 1138
+// HRSS_CIPHERTEXT_BYTES is the number of bytes in a ciphertext.
+#define HRSS_CIPHERTEXT_BYTES 1138
+// HRSS_KEY_BYTES is the number of bytes in a shared key.
+#define HRSS_KEY_BYTES 32
+// HRSS_POLY3_BYTES is the number of bytes needed to serialise a mod 3
+// polynomial.
+#define HRSS_POLY3_BYTES 140
+#define HRSS_PRIVATE_KEY_BYTES \
+  (HRSS_POLY3_BYTES * 2 + HRSS_PUBLIC_KEY_BYTES + 2 + 32)
+
+// HRSS_generate_key is a deterministic function that outputs a public and
+// private key based on the given entropy.
+OPENSSL_EXPORT void HRSS_generate_key(
+    struct HRSS_public_key *out_pub, struct HRSS_private_key *out_priv,
+    const uint8_t input[HRSS_GENERATE_KEY_BYTES]);
+
+// HRSS_encap is a deterministic function the generates and encrypts a random
+// session key from the given entropy, writing those values to |out_shared_key|
+// and |out_ciphertext|, respectively.
+OPENSSL_EXPORT void HRSS_encap(uint8_t out_ciphertext[HRSS_CIPHERTEXT_BYTES],
+                               uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_public_key *in_pub,
+                               const uint8_t in[HRSS_ENCAP_BYTES]);
+
+// HRSS_decap decrypts a session key from |ciphertext_len| bytes of
+// |ciphertext|. If the ciphertext is valid, the decrypted key is written to
+// |out_shared_key|. Otherwise the HMAC of |ciphertext| under a secret key (kept
+// in |in_priv|) is written. If the ciphertext is the wrong length then it will
+// leak which was done via side-channels. Otherwise it should perform either
+// action in constant-time.
+OPENSSL_EXPORT void HRSS_decap(uint8_t out_shared_key[HRSS_KEY_BYTES],
+                               const struct HRSS_private_key *in_priv,
+                               const uint8_t *ciphertext,
+                               size_t ciphertext_len);
+
+// HRSS_marshal_public_key serialises |in_pub| to |out|.
+OPENSSL_EXPORT void HRSS_marshal_public_key(
+    uint8_t out[HRSS_PUBLIC_KEY_BYTES], const struct HRSS_public_key *in_pub);
+
+// HRSS_parse_public_key sets |*out| to the public-key encoded in |in|. It
+// returns true on success and zero on error.
+OPENSSL_EXPORT int HRSS_parse_public_key(
+    struct HRSS_public_key *out, const uint8_t in[HRSS_PUBLIC_KEY_BYTES]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_HRSS_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h
new file mode 100644
index 0000000..302cbe2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This header is provided in order to catch include path errors in consuming
+// BoringSSL.
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.back
new file mode 100644
index 0000000..302cbe2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This header is provided in order to catch include path errors in consuming
+// BoringSSL.
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.grpc_back
new file mode 100644
index 0000000..302cbe2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/is_boringssl.h.grpc_back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// This header is provided in order to catch include path errors in consuming
+// BoringSSL.
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h
new file mode 100644
index 0000000..c0cb074
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h	
@@ -0,0 +1,282 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_LHASH_H
+#define OPENSSL_HEADER_LHASH_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// lhash is a traditional, chaining hash table that automatically expands and
+// contracts as needed. One should not use the lh_* functions directly, rather
+// use the type-safe macro wrappers:
+//
+// A hash table of a specific type of object has type |LHASH_OF(type)|. This
+// can be defined (once) with |DEFINE_LHASH_OF(type)| and declared where needed
+// with |DECLARE_LHASH_OF(type)|. For example:
+//
+//   struct foo {
+//     int bar;
+//   };
+//
+//   DEFINE_LHASH_OF(struct foo)
+//
+// Although note that the hash table will contain /pointers/ to |foo|.
+//
+// A macro will be defined for each of the lh_* functions below. For
+// LHASH_OF(foo), the macros would be lh_foo_new, lh_foo_num_items etc.
+
+
+#define LHASH_OF(type) struct lhash_st_##type
+
+#define DECLARE_LHASH_OF(type) LHASH_OF(type);
+
+
+// lhash_item_st is an element of a hash chain. It points to the opaque data
+// for this element and to the next item in the chain. The linked-list is NULL
+// terminated.
+typedef struct lhash_item_st {
+  void *data;
+  struct lhash_item_st *next;
+  // hash contains the cached, hash value of |data|.
+  uint32_t hash;
+} LHASH_ITEM;
+
+// lhash_cmp_func is a comparison function that returns a value equal, or not
+// equal, to zero depending on whether |*a| is equal, or not equal to |*b|,
+// respectively. Note the difference between this and |stack_cmp_func| in that
+// this takes pointers to the objects directly.
+//
+// This function's actual type signature is int (*)(const T*, const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef int (*lhash_cmp_func)(const void *a, const void *b);
+typedef int (*lhash_cmp_func_helper)(lhash_cmp_func func, const void *a,
+                                     const void *b);
+
+// lhash_hash_func is a function that maps an object to a uniformly distributed
+// uint32_t.
+//
+// This function's actual type signature is uint32_t (*)(const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef uint32_t (*lhash_hash_func)(const void *a);
+typedef uint32_t (*lhash_hash_func_helper)(lhash_hash_func func, const void *a);
+
+typedef struct lhash_st _LHASH;
+
+// lh_new returns a new, empty hash table or NULL on error.
+OPENSSL_EXPORT _LHASH *lh_new(lhash_hash_func hash, lhash_cmp_func comp);
+
+// lh_free frees the hash table itself but none of the elements. See
+// |lh_doall|.
+OPENSSL_EXPORT void lh_free(_LHASH *lh);
+
+// lh_num_items returns the number of items in |lh|.
+OPENSSL_EXPORT size_t lh_num_items(const _LHASH *lh);
+
+// lh_retrieve finds an element equal to |data| in the hash table and returns
+// it. If no such element exists, it returns NULL.
+OPENSSL_EXPORT void *lh_retrieve(const _LHASH *lh, const void *data,
+                                 lhash_hash_func_helper call_hash_func,
+                                 lhash_cmp_func_helper call_cmp_func);
+
+// lh_retrieve_key finds an element matching |key|, given the specified hash and
+// comparison function. This differs from |lh_retrieve| in that the key may be a
+// different type than the values stored in |lh|. |key_hash| and |cmp_key| must
+// be compatible with the functions passed into |lh_new|.
+OPENSSL_EXPORT void *lh_retrieve_key(const _LHASH *lh, const void *key,
+                                     uint32_t key_hash,
+                                     int (*cmp_key)(const void *key,
+                                                    const void *value));
+
+// lh_insert inserts |data| into the hash table. If an existing element is
+// equal to |data| (with respect to the comparison function) then |*old_data|
+// will be set to that value and it will be replaced. Otherwise, or in the
+// event of an error, |*old_data| will be set to NULL. It returns one on
+// success or zero in the case of an allocation error.
+OPENSSL_EXPORT int lh_insert(_LHASH *lh, void **old_data, void *data,
+                             lhash_hash_func_helper call_hash_func,
+                             lhash_cmp_func_helper call_cmp_func);
+
+// lh_delete removes an element equal to |data| from the hash table and returns
+// it. If no such element is found, it returns NULL.
+OPENSSL_EXPORT void *lh_delete(_LHASH *lh, const void *data,
+                               lhash_hash_func_helper call_hash_func,
+                               lhash_cmp_func_helper call_cmp_func);
+
+// lh_doall_arg calls |func| on each element of the hash table and also passes
+// |arg| as the second argument.
+// TODO(fork): rename this
+OPENSSL_EXPORT void lh_doall_arg(_LHASH *lh, void (*func)(void *, void *),
+                                 void *arg);
+
+// lh_strhash is the default hash function which processes NUL-terminated
+// strings.
+OPENSSL_EXPORT uint32_t lh_strhash(const char *c);
+
+#define DEFINE_LHASH_OF(type)                                                  \
+  DECLARE_LHASH_OF(type)                                                       \
+                                                                               \
+  typedef int (*lhash_##type##_cmp_func)(const type *, const type *);          \
+  typedef uint32_t (*lhash_##type##_hash_func)(const type *);                  \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_func(lhash_cmp_func func,            \
+                                               const void *a, const void *b) { \
+    return ((lhash_##type##_cmp_func)func)((const type *)a, (const type *)b);  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE uint32_t lh_##type##_call_hash_func(lhash_hash_func func,     \
+                                                     const void *a) {          \
+    return ((lhash_##type##_hash_func)func)((const type *)a);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE LHASH_OF(type) *                                              \
+      lh_##type##_new(lhash_##type##_hash_func hash,                           \
+                      lhash_##type##_cmp_func comp) {                          \
+    return (LHASH_OF(type) *)lh_new((lhash_hash_func)hash,                     \
+                                    (lhash_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_free(LHASH_OF(type) *lh) {                   \
+    lh_free((_LHASH *)lh);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t lh_##type##_num_items(const LHASH_OF(type) *lh) {      \
+    return lh_num_items((const _LHASH *)lh);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve(const LHASH_OF(type) *lh,          \
+                                            const type *data) {                \
+    return (type *)lh_retrieve((const _LHASH *)lh, data,                       \
+                               lh_##type##_call_hash_func,                     \
+                               lh_##type##_call_cmp_func);                     \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    int (*cmp_key)(const void *key, const type *value);                        \
+    const void *key;                                                           \
+  } LHASH_CMP_KEY_##type;                                                      \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_key(const void *key,                 \
+                                              const void *value) {             \
+    const LHASH_CMP_KEY_##type *cb = (const LHASH_CMP_KEY_##type *)key;        \
+    return cb->cmp_key(cb->key, (const type *)value);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve_key(                               \
+      const LHASH_OF(type) *lh, const void *key, uint32_t key_hash,            \
+      int (*cmp_key)(const void *key, const type *value)) {                    \
+    LHASH_CMP_KEY_##type cb = {cmp_key, key};                                  \
+    return (type *)lh_retrieve_key((const _LHASH *)lh, &cb, key_hash,          \
+                                   lh_##type##_call_cmp_key);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_insert(LHASH_OF(type) *lh, type **old_data,   \
+                                        type *data) {                          \
+    void *old_data_void = NULL;                                                \
+    int ret =                                                                  \
+        lh_insert((_LHASH *)lh, &old_data_void, data,                          \
+                  lh_##type##_call_hash_func, lh_##type##_call_cmp_func);      \
+    *old_data = (type *)old_data_void;                                         \
+    return ret;                                                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_delete(LHASH_OF(type) *lh,                  \
+                                          const type *data) {                  \
+    return (type *)lh_delete((_LHASH *)lh, data, lh_##type##_call_hash_func,   \
+                             lh_##type##_call_cmp_func);                       \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    void (*doall)(type *);                                                     \
+    void (*doall_arg)(type *, void *);                                         \
+    void *arg;                                                                 \
+  } LHASH_DOALL_##type;                                                        \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall(void *value, void *arg) {         \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall((type *)value);                                                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall_arg(void *value, void *arg) {     \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall_arg((type *)value, cb->arg);                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall(LHASH_OF(type) *lh,                    \
+                                        void (*func)(type *)) {                \
+    LHASH_DOALL_##type cb = {func, NULL, NULL};                                \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall, &cb);                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall_arg(                                   \
+      LHASH_OF(type) *lh, void (*func)(type *, void *), void *arg) {           \
+    LHASH_DOALL_##type cb = {NULL, func, arg};                                 \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall_arg, &cb);               \
+  }
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_LHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.back
new file mode 100644
index 0000000..29e09c8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.back	
@@ -0,0 +1,282 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_LHASH_H
+#define OPENSSL_HEADER_LHASH_H
+
+#include <openssl/base.h>
+#include <openssl/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// lhash is a traditional, chaining hash table that automatically expands and
+// contracts as needed. One should not use the lh_* functions directly, rather
+// use the type-safe macro wrappers:
+//
+// A hash table of a specific type of object has type |LHASH_OF(type)|. This
+// can be defined (once) with |DEFINE_LHASH_OF(type)| and declared where needed
+// with |DECLARE_LHASH_OF(type)|. For example:
+//
+//   struct foo {
+//     int bar;
+//   };
+//
+//   DEFINE_LHASH_OF(struct foo)
+//
+// Although note that the hash table will contain /pointers/ to |foo|.
+//
+// A macro will be defined for each of the lh_* functions below. For
+// LHASH_OF(foo), the macros would be lh_foo_new, lh_foo_num_items etc.
+
+
+#define LHASH_OF(type) struct lhash_st_##type
+
+#define DECLARE_LHASH_OF(type) LHASH_OF(type);
+
+
+// lhash_item_st is an element of a hash chain. It points to the opaque data
+// for this element and to the next item in the chain. The linked-list is NULL
+// terminated.
+typedef struct lhash_item_st {
+  void *data;
+  struct lhash_item_st *next;
+  // hash contains the cached, hash value of |data|.
+  uint32_t hash;
+} LHASH_ITEM;
+
+// lhash_cmp_func is a comparison function that returns a value equal, or not
+// equal, to zero depending on whether |*a| is equal, or not equal to |*b|,
+// respectively. Note the difference between this and |stack_cmp_func| in that
+// this takes pointers to the objects directly.
+//
+// This function's actual type signature is int (*)(const T*, const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef int (*lhash_cmp_func)(const void *a, const void *b);
+typedef int (*lhash_cmp_func_helper)(lhash_cmp_func func, const void *a,
+                                     const void *b);
+
+// lhash_hash_func is a function that maps an object to a uniformly distributed
+// uint32_t.
+//
+// This function's actual type signature is uint32_t (*)(const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef uint32_t (*lhash_hash_func)(const void *a);
+typedef uint32_t (*lhash_hash_func_helper)(lhash_hash_func func, const void *a);
+
+typedef struct lhash_st _LHASH;
+
+// lh_new returns a new, empty hash table or NULL on error.
+OPENSSL_EXPORT _LHASH *lh_new(lhash_hash_func hash, lhash_cmp_func comp);
+
+// lh_free frees the hash table itself but none of the elements. See
+// |lh_doall|.
+OPENSSL_EXPORT void lh_free(_LHASH *lh);
+
+// lh_num_items returns the number of items in |lh|.
+OPENSSL_EXPORT size_t lh_num_items(const _LHASH *lh);
+
+// lh_retrieve finds an element equal to |data| in the hash table and returns
+// it. If no such element exists, it returns NULL.
+OPENSSL_EXPORT void *lh_retrieve(const _LHASH *lh, const void *data,
+                                 lhash_hash_func_helper call_hash_func,
+                                 lhash_cmp_func_helper call_cmp_func);
+
+// lh_retrieve_key finds an element matching |key|, given the specified hash and
+// comparison function. This differs from |lh_retrieve| in that the key may be a
+// different type than the values stored in |lh|. |key_hash| and |cmp_key| must
+// be compatible with the functions passed into |lh_new|.
+OPENSSL_EXPORT void *lh_retrieve_key(const _LHASH *lh, const void *key,
+                                     uint32_t key_hash,
+                                     int (*cmp_key)(const void *key,
+                                                    const void *value));
+
+// lh_insert inserts |data| into the hash table. If an existing element is
+// equal to |data| (with respect to the comparison function) then |*old_data|
+// will be set to that value and it will be replaced. Otherwise, or in the
+// event of an error, |*old_data| will be set to NULL. It returns one on
+// success or zero in the case of an allocation error.
+OPENSSL_EXPORT int lh_insert(_LHASH *lh, void **old_data, void *data,
+                             lhash_hash_func_helper call_hash_func,
+                             lhash_cmp_func_helper call_cmp_func);
+
+// lh_delete removes an element equal to |data| from the hash table and returns
+// it. If no such element is found, it returns NULL.
+OPENSSL_EXPORT void *lh_delete(_LHASH *lh, const void *data,
+                               lhash_hash_func_helper call_hash_func,
+                               lhash_cmp_func_helper call_cmp_func);
+
+// lh_doall_arg calls |func| on each element of the hash table and also passes
+// |arg| as the second argument.
+// TODO(fork): rename this
+OPENSSL_EXPORT void lh_doall_arg(_LHASH *lh, void (*func)(void *, void *),
+                                 void *arg);
+
+// lh_strhash is the default hash function which processes NUL-terminated
+// strings.
+OPENSSL_EXPORT uint32_t lh_strhash(const char *c);
+
+#define DEFINE_LHASH_OF(type)                                                  \
+  DECLARE_LHASH_OF(type)                                                       \
+                                                                               \
+  typedef int (*lhash_##type##_cmp_func)(const type *, const type *);          \
+  typedef uint32_t (*lhash_##type##_hash_func)(const type *);                  \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_func(lhash_cmp_func func,            \
+                                               const void *a, const void *b) { \
+    return ((lhash_##type##_cmp_func)func)((const type *)a, (const type *)b);  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE uint32_t lh_##type##_call_hash_func(lhash_hash_func func,     \
+                                                     const void *a) {          \
+    return ((lhash_##type##_hash_func)func)((const type *)a);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE LHASH_OF(type) *                                              \
+      lh_##type##_new(lhash_##type##_hash_func hash,                           \
+                      lhash_##type##_cmp_func comp) {                          \
+    return (LHASH_OF(type) *)lh_new((lhash_hash_func)hash,                     \
+                                    (lhash_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_free(LHASH_OF(type) *lh) {                   \
+    lh_free((_LHASH *)lh);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t lh_##type##_num_items(const LHASH_OF(type) *lh) {      \
+    return lh_num_items((const _LHASH *)lh);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve(const LHASH_OF(type) *lh,          \
+                                            const type *data) {                \
+    return (type *)lh_retrieve((const _LHASH *)lh, data,                       \
+                               lh_##type##_call_hash_func,                     \
+                               lh_##type##_call_cmp_func);                     \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    int (*cmp_key)(const void *key, const type *value);                        \
+    const void *key;                                                           \
+  } LHASH_CMP_KEY_##type;                                                      \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_key(const void *key,                 \
+                                              const void *value) {             \
+    const LHASH_CMP_KEY_##type *cb = (const LHASH_CMP_KEY_##type *)key;        \
+    return cb->cmp_key(cb->key, (const type *)value);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve_key(                               \
+      const LHASH_OF(type) *lh, const void *key, uint32_t key_hash,            \
+      int (*cmp_key)(const void *key, const type *value)) {                    \
+    LHASH_CMP_KEY_##type cb = {cmp_key, key};                                  \
+    return (type *)lh_retrieve_key((const _LHASH *)lh, &cb, key_hash,          \
+                                   lh_##type##_call_cmp_key);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_insert(LHASH_OF(type) *lh, type **old_data,   \
+                                        type *data) {                          \
+    void *old_data_void = NULL;                                                \
+    int ret =                                                                  \
+        lh_insert((_LHASH *)lh, &old_data_void, data,                          \
+                  lh_##type##_call_hash_func, lh_##type##_call_cmp_func);      \
+    *old_data = (type *)old_data_void;                                         \
+    return ret;                                                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_delete(LHASH_OF(type) *lh,                  \
+                                          const type *data) {                  \
+    return (type *)lh_delete((_LHASH *)lh, data, lh_##type##_call_hash_func,   \
+                             lh_##type##_call_cmp_func);                       \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    void (*doall)(type *);                                                     \
+    void (*doall_arg)(type *, void *);                                         \
+    void *arg;                                                                 \
+  } LHASH_DOALL_##type;                                                        \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall(void *value, void *arg) {         \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall((type *)value);                                                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall_arg(void *value, void *arg) {     \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall_arg((type *)value, cb->arg);                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall(LHASH_OF(type) *lh,                    \
+                                        void (*func)(type *)) {                \
+    LHASH_DOALL_##type cb = {func, NULL, NULL};                                \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall, &cb);                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall_arg(                                   \
+      LHASH_OF(type) *lh, void (*func)(type *, void *), void *arg) {           \
+    LHASH_DOALL_##type cb = {NULL, func, arg};                                 \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall_arg, &cb);               \
+  }
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_LHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.grpc_back
new file mode 100644
index 0000000..29e09c8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/lhash.h.grpc_back	
@@ -0,0 +1,282 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_LHASH_H
+#define OPENSSL_HEADER_LHASH_H
+
+#include <openssl/base.h>
+#include <openssl/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// lhash is a traditional, chaining hash table that automatically expands and
+// contracts as needed. One should not use the lh_* functions directly, rather
+// use the type-safe macro wrappers:
+//
+// A hash table of a specific type of object has type |LHASH_OF(type)|. This
+// can be defined (once) with |DEFINE_LHASH_OF(type)| and declared where needed
+// with |DECLARE_LHASH_OF(type)|. For example:
+//
+//   struct foo {
+//     int bar;
+//   };
+//
+//   DEFINE_LHASH_OF(struct foo)
+//
+// Although note that the hash table will contain /pointers/ to |foo|.
+//
+// A macro will be defined for each of the lh_* functions below. For
+// LHASH_OF(foo), the macros would be lh_foo_new, lh_foo_num_items etc.
+
+
+#define LHASH_OF(type) struct lhash_st_##type
+
+#define DECLARE_LHASH_OF(type) LHASH_OF(type);
+
+
+// lhash_item_st is an element of a hash chain. It points to the opaque data
+// for this element and to the next item in the chain. The linked-list is NULL
+// terminated.
+typedef struct lhash_item_st {
+  void *data;
+  struct lhash_item_st *next;
+  // hash contains the cached, hash value of |data|.
+  uint32_t hash;
+} LHASH_ITEM;
+
+// lhash_cmp_func is a comparison function that returns a value equal, or not
+// equal, to zero depending on whether |*a| is equal, or not equal to |*b|,
+// respectively. Note the difference between this and |stack_cmp_func| in that
+// this takes pointers to the objects directly.
+//
+// This function's actual type signature is int (*)(const T*, const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef int (*lhash_cmp_func)(const void *a, const void *b);
+typedef int (*lhash_cmp_func_helper)(lhash_cmp_func func, const void *a,
+                                     const void *b);
+
+// lhash_hash_func is a function that maps an object to a uniformly distributed
+// uint32_t.
+//
+// This function's actual type signature is uint32_t (*)(const T*). The
+// low-level |lh_*| functions will be passed a type-specific wrapper to call it
+// correctly.
+typedef uint32_t (*lhash_hash_func)(const void *a);
+typedef uint32_t (*lhash_hash_func_helper)(lhash_hash_func func, const void *a);
+
+typedef struct lhash_st _LHASH;
+
+// lh_new returns a new, empty hash table or NULL on error.
+OPENSSL_EXPORT _LHASH *lh_new(lhash_hash_func hash, lhash_cmp_func comp);
+
+// lh_free frees the hash table itself but none of the elements. See
+// |lh_doall|.
+OPENSSL_EXPORT void lh_free(_LHASH *lh);
+
+// lh_num_items returns the number of items in |lh|.
+OPENSSL_EXPORT size_t lh_num_items(const _LHASH *lh);
+
+// lh_retrieve finds an element equal to |data| in the hash table and returns
+// it. If no such element exists, it returns NULL.
+OPENSSL_EXPORT void *lh_retrieve(const _LHASH *lh, const void *data,
+                                 lhash_hash_func_helper call_hash_func,
+                                 lhash_cmp_func_helper call_cmp_func);
+
+// lh_retrieve_key finds an element matching |key|, given the specified hash and
+// comparison function. This differs from |lh_retrieve| in that the key may be a
+// different type than the values stored in |lh|. |key_hash| and |cmp_key| must
+// be compatible with the functions passed into |lh_new|.
+OPENSSL_EXPORT void *lh_retrieve_key(const _LHASH *lh, const void *key,
+                                     uint32_t key_hash,
+                                     int (*cmp_key)(const void *key,
+                                                    const void *value));
+
+// lh_insert inserts |data| into the hash table. If an existing element is
+// equal to |data| (with respect to the comparison function) then |*old_data|
+// will be set to that value and it will be replaced. Otherwise, or in the
+// event of an error, |*old_data| will be set to NULL. It returns one on
+// success or zero in the case of an allocation error.
+OPENSSL_EXPORT int lh_insert(_LHASH *lh, void **old_data, void *data,
+                             lhash_hash_func_helper call_hash_func,
+                             lhash_cmp_func_helper call_cmp_func);
+
+// lh_delete removes an element equal to |data| from the hash table and returns
+// it. If no such element is found, it returns NULL.
+OPENSSL_EXPORT void *lh_delete(_LHASH *lh, const void *data,
+                               lhash_hash_func_helper call_hash_func,
+                               lhash_cmp_func_helper call_cmp_func);
+
+// lh_doall_arg calls |func| on each element of the hash table and also passes
+// |arg| as the second argument.
+// TODO(fork): rename this
+OPENSSL_EXPORT void lh_doall_arg(_LHASH *lh, void (*func)(void *, void *),
+                                 void *arg);
+
+// lh_strhash is the default hash function which processes NUL-terminated
+// strings.
+OPENSSL_EXPORT uint32_t lh_strhash(const char *c);
+
+#define DEFINE_LHASH_OF(type)                                                  \
+  DECLARE_LHASH_OF(type)                                                       \
+                                                                               \
+  typedef int (*lhash_##type##_cmp_func)(const type *, const type *);          \
+  typedef uint32_t (*lhash_##type##_hash_func)(const type *);                  \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_func(lhash_cmp_func func,            \
+                                               const void *a, const void *b) { \
+    return ((lhash_##type##_cmp_func)func)((const type *)a, (const type *)b);  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE uint32_t lh_##type##_call_hash_func(lhash_hash_func func,     \
+                                                     const void *a) {          \
+    return ((lhash_##type##_hash_func)func)((const type *)a);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE LHASH_OF(type) *                                              \
+      lh_##type##_new(lhash_##type##_hash_func hash,                           \
+                      lhash_##type##_cmp_func comp) {                          \
+    return (LHASH_OF(type) *)lh_new((lhash_hash_func)hash,                     \
+                                    (lhash_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_free(LHASH_OF(type) *lh) {                   \
+    lh_free((_LHASH *)lh);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t lh_##type##_num_items(const LHASH_OF(type) *lh) {      \
+    return lh_num_items((const _LHASH *)lh);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve(const LHASH_OF(type) *lh,          \
+                                            const type *data) {                \
+    return (type *)lh_retrieve((const _LHASH *)lh, data,                       \
+                               lh_##type##_call_hash_func,                     \
+                               lh_##type##_call_cmp_func);                     \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    int (*cmp_key)(const void *key, const type *value);                        \
+    const void *key;                                                           \
+  } LHASH_CMP_KEY_##type;                                                      \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_call_cmp_key(const void *key,                 \
+                                              const void *value) {             \
+    const LHASH_CMP_KEY_##type *cb = (const LHASH_CMP_KEY_##type *)key;        \
+    return cb->cmp_key(cb->key, (const type *)value);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_retrieve_key(                               \
+      const LHASH_OF(type) *lh, const void *key, uint32_t key_hash,            \
+      int (*cmp_key)(const void *key, const type *value)) {                    \
+    LHASH_CMP_KEY_##type cb = {cmp_key, key};                                  \
+    return (type *)lh_retrieve_key((const _LHASH *)lh, &cb, key_hash,          \
+                                   lh_##type##_call_cmp_key);                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int lh_##type##_insert(LHASH_OF(type) *lh, type **old_data,   \
+                                        type *data) {                          \
+    void *old_data_void = NULL;                                                \
+    int ret =                                                                  \
+        lh_insert((_LHASH *)lh, &old_data_void, data,                          \
+                  lh_##type##_call_hash_func, lh_##type##_call_cmp_func);      \
+    *old_data = (type *)old_data_void;                                         \
+    return ret;                                                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE type *lh_##type##_delete(LHASH_OF(type) *lh,                  \
+                                          const type *data) {                  \
+    return (type *)lh_delete((_LHASH *)lh, data, lh_##type##_call_hash_func,   \
+                             lh_##type##_call_cmp_func);                       \
+  }                                                                            \
+                                                                               \
+  typedef struct {                                                             \
+    void (*doall)(type *);                                                     \
+    void (*doall_arg)(type *, void *);                                         \
+    void *arg;                                                                 \
+  } LHASH_DOALL_##type;                                                        \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall(void *value, void *arg) {         \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall((type *)value);                                                  \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_call_doall_arg(void *value, void *arg) {     \
+    const LHASH_DOALL_##type *cb = (const LHASH_DOALL_##type *)arg;            \
+    cb->doall_arg((type *)value, cb->arg);                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall(LHASH_OF(type) *lh,                    \
+                                        void (*func)(type *)) {                \
+    LHASH_DOALL_##type cb = {func, NULL, NULL};                                \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall, &cb);                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void lh_##type##_doall_arg(                                   \
+      LHASH_OF(type) *lh, void (*func)(type *, void *), void *arg) {           \
+    LHASH_DOALL_##type cb = {NULL, func, arg};                                 \
+    lh_doall_arg((_LHASH *)lh, lh_##type##_call_doall_arg, &cb);               \
+  }
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_LHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h
new file mode 100644
index 0000000..f4e4512
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD4_H
+#define OPENSSL_HEADER_MD4_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD4.
+
+// MD4_CBLOCK is the block size of MD4.
+#define MD4_CBLOCK 64
+
+// MD4_DIGEST_LENGTH is the length of an MD4 digest.
+#define MD4_DIGEST_LENGTH 16
+
+// MD4_Init initialises |md4| and returns one.
+OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4);
+
+// MD4_Update adds |len| bytes from |data| to |md4| and returns one.
+OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len);
+
+// MD4_Final adds the final padding to |md4| and writes the resulting digest to
+// |out|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *md4);
+
+// MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len,
+                            uint8_t out[MD4_DIGEST_LENGTH]);
+
+// MD4_Transform is a low-level function that performs a single, MD4 block
+// transformation using the state from |md4| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4,
+                                  const uint8_t block[MD4_CBLOCK]);
+
+struct md4_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD4_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.back
new file mode 100644
index 0000000..b213bc6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.back	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD4_H
+#define OPENSSL_HEADER_MD4_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD4.
+
+// MD4_CBLOCK is the block size of MD4.
+#define MD4_CBLOCK 64
+
+// MD4_DIGEST_LENGTH is the length of an MD4 digest.
+#define MD4_DIGEST_LENGTH 16
+
+// MD4_Init initialises |md4| and returns one.
+OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4);
+
+// MD4_Update adds |len| bytes from |data| to |md4| and returns one.
+OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len);
+
+// MD4_Final adds the final padding to |md4| and writes the resulting digest to
+// |out|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *md4);
+
+// MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len,
+                            uint8_t out[MD4_DIGEST_LENGTH]);
+
+// MD4_Transform is a low-level function that performs a single, MD4 block
+// transformation using the state from |md4| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4,
+                                  const uint8_t block[MD4_CBLOCK]);
+
+struct md4_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD4_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.grpc_back
new file mode 100644
index 0000000..b213bc6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md4.h.grpc_back	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD4_H
+#define OPENSSL_HEADER_MD4_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD4.
+
+// MD4_CBLOCK is the block size of MD4.
+#define MD4_CBLOCK 64
+
+// MD4_DIGEST_LENGTH is the length of an MD4 digest.
+#define MD4_DIGEST_LENGTH 16
+
+// MD4_Init initialises |md4| and returns one.
+OPENSSL_EXPORT int MD4_Init(MD4_CTX *md4);
+
+// MD4_Update adds |len| bytes from |data| to |md4| and returns one.
+OPENSSL_EXPORT int MD4_Update(MD4_CTX *md4, const void *data, size_t len);
+
+// MD4_Final adds the final padding to |md4| and writes the resulting digest to
+// |out|, which must have at least |MD4_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *md4);
+
+// MD4 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD4_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD4(const uint8_t *data, size_t len,
+                            uint8_t out[MD4_DIGEST_LENGTH]);
+
+// MD4_Transform is a low-level function that performs a single, MD4 block
+// transformation using the state from |md4| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD4_Transform(MD4_CTX *md4,
+                                  const uint8_t block[MD4_CBLOCK]);
+
+struct md4_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD4_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h
new file mode 100644
index 0000000..5c7705d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h	
@@ -0,0 +1,109 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD5_H
+#define OPENSSL_HEADER_MD5_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD5.
+
+
+// MD5_CBLOCK is the block size of MD5.
+#define MD5_CBLOCK 64
+
+// MD5_DIGEST_LENGTH is the length of an MD5 digest.
+#define MD5_DIGEST_LENGTH 16
+
+// MD5_Init initialises |md5| and returns one.
+OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5);
+
+// MD5_Update adds |len| bytes from |data| to |md5| and returns one.
+OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len);
+
+// MD5_Final adds the final padding to |md5| and writes the resulting digest to
+// |out|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *md5);
+
+// MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len,
+                            uint8_t out[MD5_DIGEST_LENGTH]);
+
+// MD5_Transform is a low-level function that performs a single, MD5 block
+// transformation using the state from |md5| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5,
+                                  const uint8_t block[MD5_CBLOCK]);
+
+struct md5_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD5_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD5_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.back
new file mode 100644
index 0000000..5486512
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.back	
@@ -0,0 +1,109 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD5_H
+#define OPENSSL_HEADER_MD5_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD5.
+
+
+// MD5_CBLOCK is the block size of MD5.
+#define MD5_CBLOCK 64
+
+// MD5_DIGEST_LENGTH is the length of an MD5 digest.
+#define MD5_DIGEST_LENGTH 16
+
+// MD5_Init initialises |md5| and returns one.
+OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5);
+
+// MD5_Update adds |len| bytes from |data| to |md5| and returns one.
+OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len);
+
+// MD5_Final adds the final padding to |md5| and writes the resulting digest to
+// |out|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *md5);
+
+// MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len,
+                            uint8_t out[MD5_DIGEST_LENGTH]);
+
+// MD5_Transform is a low-level function that performs a single, MD5 block
+// transformation using the state from |md5| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5,
+                                  const uint8_t block[MD5_CBLOCK]);
+
+struct md5_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD5_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD5_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.grpc_back
new file mode 100644
index 0000000..5486512
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/md5.h.grpc_back	
@@ -0,0 +1,109 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MD5_H
+#define OPENSSL_HEADER_MD5_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// MD5.
+
+
+// MD5_CBLOCK is the block size of MD5.
+#define MD5_CBLOCK 64
+
+// MD5_DIGEST_LENGTH is the length of an MD5 digest.
+#define MD5_DIGEST_LENGTH 16
+
+// MD5_Init initialises |md5| and returns one.
+OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5);
+
+// MD5_Update adds |len| bytes from |data| to |md5| and returns one.
+OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len);
+
+// MD5_Final adds the final padding to |md5| and writes the resulting digest to
+// |out|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *md5);
+
+// MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|.
+// There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|.
+OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len,
+                            uint8_t out[MD5_DIGEST_LENGTH]);
+
+// MD5_Transform is a low-level function that performs a single, MD5 block
+// transformation using the state from |md5| and 64 bytes from |block|.
+OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5,
+                                  const uint8_t block[MD5_CBLOCK]);
+
+struct md5_state_st {
+  uint32_t h[4];
+  uint32_t Nl, Nh;
+  uint8_t data[MD5_CBLOCK];
+  unsigned num;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_MD5_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h
new file mode 100644
index 0000000..4138695
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h	
@@ -0,0 +1,175 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MEM_H
+#define OPENSSL_HEADER_MEM_H
+
+#include <openssl_grpc/base.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also buf.h.
+//
+// BoringSSL has its own set of allocation functions, which keep track of
+// allocation lengths and zero them out before freeing. All memory returned by
+// BoringSSL API calls must therefore generally be freed using |OPENSSL_free|
+// unless stated otherwise.
+
+
+// OPENSSL_malloc acts like a regular |malloc|.
+OPENSSL_EXPORT void *OPENSSL_malloc(size_t size);
+
+// OPENSSL_free does nothing if |ptr| is NULL. Otherwise it zeros out the
+// memory allocated at |ptr| and frees it.
+OPENSSL_EXPORT void OPENSSL_free(void *ptr);
+
+// OPENSSL_realloc returns a pointer to a buffer of |new_size| bytes that
+// contains the contents of |ptr|. Unlike |realloc|, a new buffer is always
+// allocated and the data at |ptr| is always wiped and freed.
+OPENSSL_EXPORT void *OPENSSL_realloc(void *ptr, size_t new_size);
+
+// OPENSSL_cleanse zeros out |len| bytes of memory at |ptr|. This is similar to
+// |memset_s| from C11.
+OPENSSL_EXPORT void OPENSSL_cleanse(void *ptr, size_t len);
+
+// CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
+// takes an amount of time dependent on |len|, but independent of the contents
+// of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
+// defined order as the return value when a != b is undefined, other than to be
+// non-zero.
+OPENSSL_EXPORT int CRYPTO_memcmp(const void *a, const void *b, size_t len);
+
+// OPENSSL_hash32 implements the 32 bit, FNV-1a hash.
+OPENSSL_EXPORT uint32_t OPENSSL_hash32(const void *ptr, size_t len);
+
+// OPENSSL_strdup has the same behaviour as strdup(3).
+OPENSSL_EXPORT char *OPENSSL_strdup(const char *s);
+
+// OPENSSL_strnlen has the same behaviour as strnlen(3).
+OPENSSL_EXPORT size_t OPENSSL_strnlen(const char *s, size_t len);
+
+// OPENSSL_tolower is a locale-independent version of tolower(3).
+OPENSSL_EXPORT int OPENSSL_tolower(int c);
+
+// OPENSSL_strcasecmp is a locale-independent version of strcasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strcasecmp(const char *a, const char *b);
+
+// OPENSSL_strncasecmp is a locale-independent version of strncasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strncasecmp(const char *a, const char *b, size_t n);
+
+// DECIMAL_SIZE returns an upper bound for the length of the decimal
+// representation of the given type.
+#define DECIMAL_SIZE(type)	((sizeof(type)*8+2)/3+1)
+
+// BIO_snprintf has the same behavior as snprintf(3).
+OPENSSL_EXPORT int BIO_snprintf(char *buf, size_t n, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(3, 4);
+
+// BIO_vsnprintf has the same behavior as vsnprintf(3).
+OPENSSL_EXPORT int BIO_vsnprintf(char *buf, size_t n, const char *format,
+                                 va_list args) OPENSSL_PRINTF_FORMAT_FUNC(3, 0);
+
+// OPENSSL_strndup returns an allocated, duplicate of |str|, which is, at most,
+// |size| bytes. The result is always NUL terminated.
+OPENSSL_EXPORT char *OPENSSL_strndup(const char *str, size_t size);
+
+// OPENSSL_memdup returns an allocated, duplicate of |size| bytes from |data| or
+// NULL on allocation failure.
+OPENSSL_EXPORT void *OPENSSL_memdup(const void *data, size_t size);
+
+// OPENSSL_strlcpy acts like strlcpy(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcpy(char *dst, const char *src,
+                                      size_t dst_size);
+
+// OPENSSL_strlcat acts like strlcat(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcat(char *dst, const char *src,
+                                      size_t dst_size);
+
+
+// Deprecated functions.
+
+#define CRYPTO_malloc OPENSSL_malloc
+#define CRYPTO_realloc OPENSSL_realloc
+#define CRYPTO_free OPENSSL_free
+
+// OPENSSL_clear_free calls |OPENSSL_free|. BoringSSL automatically clears all
+// allocations on free, but we define |OPENSSL_clear_free| for compatibility.
+OPENSSL_EXPORT void OPENSSL_clear_free(void *ptr, size_t len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(char, OPENSSL_free)
+BORINGSSL_MAKE_DELETER(uint8_t, OPENSSL_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_MEM_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.back
new file mode 100644
index 0000000..cceabcd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.back	
@@ -0,0 +1,175 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MEM_H
+#define OPENSSL_HEADER_MEM_H
+
+#include <openssl/base.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also buf.h.
+//
+// BoringSSL has its own set of allocation functions, which keep track of
+// allocation lengths and zero them out before freeing. All memory returned by
+// BoringSSL API calls must therefore generally be freed using |OPENSSL_free|
+// unless stated otherwise.
+
+
+// OPENSSL_malloc acts like a regular |malloc|.
+OPENSSL_EXPORT void *OPENSSL_malloc(size_t size);
+
+// OPENSSL_free does nothing if |ptr| is NULL. Otherwise it zeros out the
+// memory allocated at |ptr| and frees it.
+OPENSSL_EXPORT void OPENSSL_free(void *ptr);
+
+// OPENSSL_realloc returns a pointer to a buffer of |new_size| bytes that
+// contains the contents of |ptr|. Unlike |realloc|, a new buffer is always
+// allocated and the data at |ptr| is always wiped and freed.
+OPENSSL_EXPORT void *OPENSSL_realloc(void *ptr, size_t new_size);
+
+// OPENSSL_cleanse zeros out |len| bytes of memory at |ptr|. This is similar to
+// |memset_s| from C11.
+OPENSSL_EXPORT void OPENSSL_cleanse(void *ptr, size_t len);
+
+// CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
+// takes an amount of time dependent on |len|, but independent of the contents
+// of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
+// defined order as the return value when a != b is undefined, other than to be
+// non-zero.
+OPENSSL_EXPORT int CRYPTO_memcmp(const void *a, const void *b, size_t len);
+
+// OPENSSL_hash32 implements the 32 bit, FNV-1a hash.
+OPENSSL_EXPORT uint32_t OPENSSL_hash32(const void *ptr, size_t len);
+
+// OPENSSL_strdup has the same behaviour as strdup(3).
+OPENSSL_EXPORT char *OPENSSL_strdup(const char *s);
+
+// OPENSSL_strnlen has the same behaviour as strnlen(3).
+OPENSSL_EXPORT size_t OPENSSL_strnlen(const char *s, size_t len);
+
+// OPENSSL_tolower is a locale-independent version of tolower(3).
+OPENSSL_EXPORT int OPENSSL_tolower(int c);
+
+// OPENSSL_strcasecmp is a locale-independent version of strcasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strcasecmp(const char *a, const char *b);
+
+// OPENSSL_strncasecmp is a locale-independent version of strncasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strncasecmp(const char *a, const char *b, size_t n);
+
+// DECIMAL_SIZE returns an upper bound for the length of the decimal
+// representation of the given type.
+#define DECIMAL_SIZE(type)	((sizeof(type)*8+2)/3+1)
+
+// BIO_snprintf has the same behavior as snprintf(3).
+OPENSSL_EXPORT int BIO_snprintf(char *buf, size_t n, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(3, 4);
+
+// BIO_vsnprintf has the same behavior as vsnprintf(3).
+OPENSSL_EXPORT int BIO_vsnprintf(char *buf, size_t n, const char *format,
+                                 va_list args) OPENSSL_PRINTF_FORMAT_FUNC(3, 0);
+
+// OPENSSL_strndup returns an allocated, duplicate of |str|, which is, at most,
+// |size| bytes. The result is always NUL terminated.
+OPENSSL_EXPORT char *OPENSSL_strndup(const char *str, size_t size);
+
+// OPENSSL_memdup returns an allocated, duplicate of |size| bytes from |data| or
+// NULL on allocation failure.
+OPENSSL_EXPORT void *OPENSSL_memdup(const void *data, size_t size);
+
+// OPENSSL_strlcpy acts like strlcpy(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcpy(char *dst, const char *src,
+                                      size_t dst_size);
+
+// OPENSSL_strlcat acts like strlcat(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcat(char *dst, const char *src,
+                                      size_t dst_size);
+
+
+// Deprecated functions.
+
+#define CRYPTO_malloc OPENSSL_malloc
+#define CRYPTO_realloc OPENSSL_realloc
+#define CRYPTO_free OPENSSL_free
+
+// OPENSSL_clear_free calls |OPENSSL_free|. BoringSSL automatically clears all
+// allocations on free, but we define |OPENSSL_clear_free| for compatibility.
+OPENSSL_EXPORT void OPENSSL_clear_free(void *ptr, size_t len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(char, OPENSSL_free)
+BORINGSSL_MAKE_DELETER(uint8_t, OPENSSL_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_MEM_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.grpc_back
new file mode 100644
index 0000000..cceabcd
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/mem.h.grpc_back	
@@ -0,0 +1,175 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_MEM_H
+#define OPENSSL_HEADER_MEM_H
+
+#include <openssl/base.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also buf.h.
+//
+// BoringSSL has its own set of allocation functions, which keep track of
+// allocation lengths and zero them out before freeing. All memory returned by
+// BoringSSL API calls must therefore generally be freed using |OPENSSL_free|
+// unless stated otherwise.
+
+
+// OPENSSL_malloc acts like a regular |malloc|.
+OPENSSL_EXPORT void *OPENSSL_malloc(size_t size);
+
+// OPENSSL_free does nothing if |ptr| is NULL. Otherwise it zeros out the
+// memory allocated at |ptr| and frees it.
+OPENSSL_EXPORT void OPENSSL_free(void *ptr);
+
+// OPENSSL_realloc returns a pointer to a buffer of |new_size| bytes that
+// contains the contents of |ptr|. Unlike |realloc|, a new buffer is always
+// allocated and the data at |ptr| is always wiped and freed.
+OPENSSL_EXPORT void *OPENSSL_realloc(void *ptr, size_t new_size);
+
+// OPENSSL_cleanse zeros out |len| bytes of memory at |ptr|. This is similar to
+// |memset_s| from C11.
+OPENSSL_EXPORT void OPENSSL_cleanse(void *ptr, size_t len);
+
+// CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
+// takes an amount of time dependent on |len|, but independent of the contents
+// of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
+// defined order as the return value when a != b is undefined, other than to be
+// non-zero.
+OPENSSL_EXPORT int CRYPTO_memcmp(const void *a, const void *b, size_t len);
+
+// OPENSSL_hash32 implements the 32 bit, FNV-1a hash.
+OPENSSL_EXPORT uint32_t OPENSSL_hash32(const void *ptr, size_t len);
+
+// OPENSSL_strdup has the same behaviour as strdup(3).
+OPENSSL_EXPORT char *OPENSSL_strdup(const char *s);
+
+// OPENSSL_strnlen has the same behaviour as strnlen(3).
+OPENSSL_EXPORT size_t OPENSSL_strnlen(const char *s, size_t len);
+
+// OPENSSL_tolower is a locale-independent version of tolower(3).
+OPENSSL_EXPORT int OPENSSL_tolower(int c);
+
+// OPENSSL_strcasecmp is a locale-independent version of strcasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strcasecmp(const char *a, const char *b);
+
+// OPENSSL_strncasecmp is a locale-independent version of strncasecmp(3).
+OPENSSL_EXPORT int OPENSSL_strncasecmp(const char *a, const char *b, size_t n);
+
+// DECIMAL_SIZE returns an upper bound for the length of the decimal
+// representation of the given type.
+#define DECIMAL_SIZE(type)	((sizeof(type)*8+2)/3+1)
+
+// BIO_snprintf has the same behavior as snprintf(3).
+OPENSSL_EXPORT int BIO_snprintf(char *buf, size_t n, const char *format, ...)
+    OPENSSL_PRINTF_FORMAT_FUNC(3, 4);
+
+// BIO_vsnprintf has the same behavior as vsnprintf(3).
+OPENSSL_EXPORT int BIO_vsnprintf(char *buf, size_t n, const char *format,
+                                 va_list args) OPENSSL_PRINTF_FORMAT_FUNC(3, 0);
+
+// OPENSSL_strndup returns an allocated, duplicate of |str|, which is, at most,
+// |size| bytes. The result is always NUL terminated.
+OPENSSL_EXPORT char *OPENSSL_strndup(const char *str, size_t size);
+
+// OPENSSL_memdup returns an allocated, duplicate of |size| bytes from |data| or
+// NULL on allocation failure.
+OPENSSL_EXPORT void *OPENSSL_memdup(const void *data, size_t size);
+
+// OPENSSL_strlcpy acts like strlcpy(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcpy(char *dst, const char *src,
+                                      size_t dst_size);
+
+// OPENSSL_strlcat acts like strlcat(3).
+OPENSSL_EXPORT size_t OPENSSL_strlcat(char *dst, const char *src,
+                                      size_t dst_size);
+
+
+// Deprecated functions.
+
+#define CRYPTO_malloc OPENSSL_malloc
+#define CRYPTO_realloc OPENSSL_realloc
+#define CRYPTO_free OPENSSL_free
+
+// OPENSSL_clear_free calls |OPENSSL_free|. BoringSSL automatically clears all
+// allocations on free, but we define |OPENSSL_clear_free| for compatibility.
+OPENSSL_EXPORT void OPENSSL_clear_free(void *ptr, size_t len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(char, OPENSSL_free)
+BORINGSSL_MAKE_DELETER(uint8_t, OPENSSL_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_MEM_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h
new file mode 100644
index 0000000..676a194
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h	
@@ -0,0 +1,4254 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+/* This file is generated by crypto/obj/objects.go. */
+
+#ifndef OPENSSL_HEADER_NID_H
+#define OPENSSL_HEADER_NID_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* The nid library provides numbered values for ASN.1 object identifiers and
+ * other symbols. These values are used by other libraries to identify
+ * cryptographic primitives.
+ *
+ * A separate objects library, obj.h, provides functions for converting between
+ * nids and object identifiers. However it depends on large internal tables with
+ * the encodings of every nid defined. Consumers concerned with binary size
+ * should instead embed the encodings of the few consumed OIDs and compare
+ * against those.
+ *
+ * These values should not be used outside of a single process; they are not
+ * stable identifiers. */
+
+
+#define SN_undef "UNDEF"
+#define LN_undef "undefined"
+#define NID_undef 0
+#define OBJ_undef 0L
+
+#define SN_rsadsi "rsadsi"
+#define LN_rsadsi "RSA Data Security, Inc."
+#define NID_rsadsi 1
+#define OBJ_rsadsi 1L, 2L, 840L, 113549L
+
+#define SN_pkcs "pkcs"
+#define LN_pkcs "RSA Data Security, Inc. PKCS"
+#define NID_pkcs 2
+#define OBJ_pkcs 1L, 2L, 840L, 113549L, 1L
+
+#define SN_md2 "MD2"
+#define LN_md2 "md2"
+#define NID_md2 3
+#define OBJ_md2 1L, 2L, 840L, 113549L, 2L, 2L
+
+#define SN_md5 "MD5"
+#define LN_md5 "md5"
+#define NID_md5 4
+#define OBJ_md5 1L, 2L, 840L, 113549L, 2L, 5L
+
+#define SN_rc4 "RC4"
+#define LN_rc4 "rc4"
+#define NID_rc4 5
+#define OBJ_rc4 1L, 2L, 840L, 113549L, 3L, 4L
+
+#define LN_rsaEncryption "rsaEncryption"
+#define NID_rsaEncryption 6
+#define OBJ_rsaEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 1L
+
+#define SN_md2WithRSAEncryption "RSA-MD2"
+#define LN_md2WithRSAEncryption "md2WithRSAEncryption"
+#define NID_md2WithRSAEncryption 7
+#define OBJ_md2WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 2L
+
+#define SN_md5WithRSAEncryption "RSA-MD5"
+#define LN_md5WithRSAEncryption "md5WithRSAEncryption"
+#define NID_md5WithRSAEncryption 8
+#define OBJ_md5WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 4L
+
+#define SN_pbeWithMD2AndDES_CBC "PBE-MD2-DES"
+#define LN_pbeWithMD2AndDES_CBC "pbeWithMD2AndDES-CBC"
+#define NID_pbeWithMD2AndDES_CBC 9
+#define OBJ_pbeWithMD2AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 1L
+
+#define SN_pbeWithMD5AndDES_CBC "PBE-MD5-DES"
+#define LN_pbeWithMD5AndDES_CBC "pbeWithMD5AndDES-CBC"
+#define NID_pbeWithMD5AndDES_CBC 10
+#define OBJ_pbeWithMD5AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 3L
+
+#define SN_X500 "X500"
+#define LN_X500 "directory services (X.500)"
+#define NID_X500 11
+#define OBJ_X500 2L, 5L
+
+#define SN_X509 "X509"
+#define NID_X509 12
+#define OBJ_X509 2L, 5L, 4L
+
+#define SN_commonName "CN"
+#define LN_commonName "commonName"
+#define NID_commonName 13
+#define OBJ_commonName 2L, 5L, 4L, 3L
+
+#define SN_countryName "C"
+#define LN_countryName "countryName"
+#define NID_countryName 14
+#define OBJ_countryName 2L, 5L, 4L, 6L
+
+#define SN_localityName "L"
+#define LN_localityName "localityName"
+#define NID_localityName 15
+#define OBJ_localityName 2L, 5L, 4L, 7L
+
+#define SN_stateOrProvinceName "ST"
+#define LN_stateOrProvinceName "stateOrProvinceName"
+#define NID_stateOrProvinceName 16
+#define OBJ_stateOrProvinceName 2L, 5L, 4L, 8L
+
+#define SN_organizationName "O"
+#define LN_organizationName "organizationName"
+#define NID_organizationName 17
+#define OBJ_organizationName 2L, 5L, 4L, 10L
+
+#define SN_organizationalUnitName "OU"
+#define LN_organizationalUnitName "organizationalUnitName"
+#define NID_organizationalUnitName 18
+#define OBJ_organizationalUnitName 2L, 5L, 4L, 11L
+
+#define SN_rsa "RSA"
+#define LN_rsa "rsa"
+#define NID_rsa 19
+#define OBJ_rsa 2L, 5L, 8L, 1L, 1L
+
+#define SN_pkcs7 "pkcs7"
+#define NID_pkcs7 20
+#define OBJ_pkcs7 1L, 2L, 840L, 113549L, 1L, 7L
+
+#define LN_pkcs7_data "pkcs7-data"
+#define NID_pkcs7_data 21
+#define OBJ_pkcs7_data 1L, 2L, 840L, 113549L, 1L, 7L, 1L
+
+#define LN_pkcs7_signed "pkcs7-signedData"
+#define NID_pkcs7_signed 22
+#define OBJ_pkcs7_signed 1L, 2L, 840L, 113549L, 1L, 7L, 2L
+
+#define LN_pkcs7_enveloped "pkcs7-envelopedData"
+#define NID_pkcs7_enveloped 23
+#define OBJ_pkcs7_enveloped 1L, 2L, 840L, 113549L, 1L, 7L, 3L
+
+#define LN_pkcs7_signedAndEnveloped "pkcs7-signedAndEnvelopedData"
+#define NID_pkcs7_signedAndEnveloped 24
+#define OBJ_pkcs7_signedAndEnveloped 1L, 2L, 840L, 113549L, 1L, 7L, 4L
+
+#define LN_pkcs7_digest "pkcs7-digestData"
+#define NID_pkcs7_digest 25
+#define OBJ_pkcs7_digest 1L, 2L, 840L, 113549L, 1L, 7L, 5L
+
+#define LN_pkcs7_encrypted "pkcs7-encryptedData"
+#define NID_pkcs7_encrypted 26
+#define OBJ_pkcs7_encrypted 1L, 2L, 840L, 113549L, 1L, 7L, 6L
+
+#define SN_pkcs3 "pkcs3"
+#define NID_pkcs3 27
+#define OBJ_pkcs3 1L, 2L, 840L, 113549L, 1L, 3L
+
+#define LN_dhKeyAgreement "dhKeyAgreement"
+#define NID_dhKeyAgreement 28
+#define OBJ_dhKeyAgreement 1L, 2L, 840L, 113549L, 1L, 3L, 1L
+
+#define SN_des_ecb "DES-ECB"
+#define LN_des_ecb "des-ecb"
+#define NID_des_ecb 29
+#define OBJ_des_ecb 1L, 3L, 14L, 3L, 2L, 6L
+
+#define SN_des_cfb64 "DES-CFB"
+#define LN_des_cfb64 "des-cfb"
+#define NID_des_cfb64 30
+#define OBJ_des_cfb64 1L, 3L, 14L, 3L, 2L, 9L
+
+#define SN_des_cbc "DES-CBC"
+#define LN_des_cbc "des-cbc"
+#define NID_des_cbc 31
+#define OBJ_des_cbc 1L, 3L, 14L, 3L, 2L, 7L
+
+#define SN_des_ede_ecb "DES-EDE"
+#define LN_des_ede_ecb "des-ede"
+#define NID_des_ede_ecb 32
+#define OBJ_des_ede_ecb 1L, 3L, 14L, 3L, 2L, 17L
+
+#define SN_des_ede3_ecb "DES-EDE3"
+#define LN_des_ede3_ecb "des-ede3"
+#define NID_des_ede3_ecb 33
+
+#define SN_idea_cbc "IDEA-CBC"
+#define LN_idea_cbc "idea-cbc"
+#define NID_idea_cbc 34
+#define OBJ_idea_cbc 1L, 3L, 6L, 1L, 4L, 1L, 188L, 7L, 1L, 1L, 2L
+
+#define SN_idea_cfb64 "IDEA-CFB"
+#define LN_idea_cfb64 "idea-cfb"
+#define NID_idea_cfb64 35
+
+#define SN_idea_ecb "IDEA-ECB"
+#define LN_idea_ecb "idea-ecb"
+#define NID_idea_ecb 36
+
+#define SN_rc2_cbc "RC2-CBC"
+#define LN_rc2_cbc "rc2-cbc"
+#define NID_rc2_cbc 37
+#define OBJ_rc2_cbc 1L, 2L, 840L, 113549L, 3L, 2L
+
+#define SN_rc2_ecb "RC2-ECB"
+#define LN_rc2_ecb "rc2-ecb"
+#define NID_rc2_ecb 38
+
+#define SN_rc2_cfb64 "RC2-CFB"
+#define LN_rc2_cfb64 "rc2-cfb"
+#define NID_rc2_cfb64 39
+
+#define SN_rc2_ofb64 "RC2-OFB"
+#define LN_rc2_ofb64 "rc2-ofb"
+#define NID_rc2_ofb64 40
+
+#define SN_sha "SHA"
+#define LN_sha "sha"
+#define NID_sha 41
+#define OBJ_sha 1L, 3L, 14L, 3L, 2L, 18L
+
+#define SN_shaWithRSAEncryption "RSA-SHA"
+#define LN_shaWithRSAEncryption "shaWithRSAEncryption"
+#define NID_shaWithRSAEncryption 42
+#define OBJ_shaWithRSAEncryption 1L, 3L, 14L, 3L, 2L, 15L
+
+#define SN_des_ede_cbc "DES-EDE-CBC"
+#define LN_des_ede_cbc "des-ede-cbc"
+#define NID_des_ede_cbc 43
+
+#define SN_des_ede3_cbc "DES-EDE3-CBC"
+#define LN_des_ede3_cbc "des-ede3-cbc"
+#define NID_des_ede3_cbc 44
+#define OBJ_des_ede3_cbc 1L, 2L, 840L, 113549L, 3L, 7L
+
+#define SN_des_ofb64 "DES-OFB"
+#define LN_des_ofb64 "des-ofb"
+#define NID_des_ofb64 45
+#define OBJ_des_ofb64 1L, 3L, 14L, 3L, 2L, 8L
+
+#define SN_idea_ofb64 "IDEA-OFB"
+#define LN_idea_ofb64 "idea-ofb"
+#define NID_idea_ofb64 46
+
+#define SN_pkcs9 "pkcs9"
+#define NID_pkcs9 47
+#define OBJ_pkcs9 1L, 2L, 840L, 113549L, 1L, 9L
+
+#define LN_pkcs9_emailAddress "emailAddress"
+#define NID_pkcs9_emailAddress 48
+#define OBJ_pkcs9_emailAddress 1L, 2L, 840L, 113549L, 1L, 9L, 1L
+
+#define LN_pkcs9_unstructuredName "unstructuredName"
+#define NID_pkcs9_unstructuredName 49
+#define OBJ_pkcs9_unstructuredName 1L, 2L, 840L, 113549L, 1L, 9L, 2L
+
+#define LN_pkcs9_contentType "contentType"
+#define NID_pkcs9_contentType 50
+#define OBJ_pkcs9_contentType 1L, 2L, 840L, 113549L, 1L, 9L, 3L
+
+#define LN_pkcs9_messageDigest "messageDigest"
+#define NID_pkcs9_messageDigest 51
+#define OBJ_pkcs9_messageDigest 1L, 2L, 840L, 113549L, 1L, 9L, 4L
+
+#define LN_pkcs9_signingTime "signingTime"
+#define NID_pkcs9_signingTime 52
+#define OBJ_pkcs9_signingTime 1L, 2L, 840L, 113549L, 1L, 9L, 5L
+
+#define LN_pkcs9_countersignature "countersignature"
+#define NID_pkcs9_countersignature 53
+#define OBJ_pkcs9_countersignature 1L, 2L, 840L, 113549L, 1L, 9L, 6L
+
+#define LN_pkcs9_challengePassword "challengePassword"
+#define NID_pkcs9_challengePassword 54
+#define OBJ_pkcs9_challengePassword 1L, 2L, 840L, 113549L, 1L, 9L, 7L
+
+#define LN_pkcs9_unstructuredAddress "unstructuredAddress"
+#define NID_pkcs9_unstructuredAddress 55
+#define OBJ_pkcs9_unstructuredAddress 1L, 2L, 840L, 113549L, 1L, 9L, 8L
+
+#define LN_pkcs9_extCertAttributes "extendedCertificateAttributes"
+#define NID_pkcs9_extCertAttributes 56
+#define OBJ_pkcs9_extCertAttributes 1L, 2L, 840L, 113549L, 1L, 9L, 9L
+
+#define SN_netscape "Netscape"
+#define LN_netscape "Netscape Communications Corp."
+#define NID_netscape 57
+#define OBJ_netscape 2L, 16L, 840L, 1L, 113730L
+
+#define SN_netscape_cert_extension "nsCertExt"
+#define LN_netscape_cert_extension "Netscape Certificate Extension"
+#define NID_netscape_cert_extension 58
+#define OBJ_netscape_cert_extension 2L, 16L, 840L, 1L, 113730L, 1L
+
+#define SN_netscape_data_type "nsDataType"
+#define LN_netscape_data_type "Netscape Data Type"
+#define NID_netscape_data_type 59
+#define OBJ_netscape_data_type 2L, 16L, 840L, 1L, 113730L, 2L
+
+#define SN_des_ede_cfb64 "DES-EDE-CFB"
+#define LN_des_ede_cfb64 "des-ede-cfb"
+#define NID_des_ede_cfb64 60
+
+#define SN_des_ede3_cfb64 "DES-EDE3-CFB"
+#define LN_des_ede3_cfb64 "des-ede3-cfb"
+#define NID_des_ede3_cfb64 61
+
+#define SN_des_ede_ofb64 "DES-EDE-OFB"
+#define LN_des_ede_ofb64 "des-ede-ofb"
+#define NID_des_ede_ofb64 62
+
+#define SN_des_ede3_ofb64 "DES-EDE3-OFB"
+#define LN_des_ede3_ofb64 "des-ede3-ofb"
+#define NID_des_ede3_ofb64 63
+
+#define SN_sha1 "SHA1"
+#define LN_sha1 "sha1"
+#define NID_sha1 64
+#define OBJ_sha1 1L, 3L, 14L, 3L, 2L, 26L
+
+#define SN_sha1WithRSAEncryption "RSA-SHA1"
+#define LN_sha1WithRSAEncryption "sha1WithRSAEncryption"
+#define NID_sha1WithRSAEncryption 65
+#define OBJ_sha1WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 5L
+
+#define SN_dsaWithSHA "DSA-SHA"
+#define LN_dsaWithSHA "dsaWithSHA"
+#define NID_dsaWithSHA 66
+#define OBJ_dsaWithSHA 1L, 3L, 14L, 3L, 2L, 13L
+
+#define SN_dsa_2 "DSA-old"
+#define LN_dsa_2 "dsaEncryption-old"
+#define NID_dsa_2 67
+#define OBJ_dsa_2 1L, 3L, 14L, 3L, 2L, 12L
+
+#define SN_pbeWithSHA1AndRC2_CBC "PBE-SHA1-RC2-64"
+#define LN_pbeWithSHA1AndRC2_CBC "pbeWithSHA1AndRC2-CBC"
+#define NID_pbeWithSHA1AndRC2_CBC 68
+#define OBJ_pbeWithSHA1AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 11L
+
+#define LN_id_pbkdf2 "PBKDF2"
+#define NID_id_pbkdf2 69
+#define OBJ_id_pbkdf2 1L, 2L, 840L, 113549L, 1L, 5L, 12L
+
+#define SN_dsaWithSHA1_2 "DSA-SHA1-old"
+#define LN_dsaWithSHA1_2 "dsaWithSHA1-old"
+#define NID_dsaWithSHA1_2 70
+#define OBJ_dsaWithSHA1_2 1L, 3L, 14L, 3L, 2L, 27L
+
+#define SN_netscape_cert_type "nsCertType"
+#define LN_netscape_cert_type "Netscape Cert Type"
+#define NID_netscape_cert_type 71
+#define OBJ_netscape_cert_type 2L, 16L, 840L, 1L, 113730L, 1L, 1L
+
+#define SN_netscape_base_url "nsBaseUrl"
+#define LN_netscape_base_url "Netscape Base Url"
+#define NID_netscape_base_url 72
+#define OBJ_netscape_base_url 2L, 16L, 840L, 1L, 113730L, 1L, 2L
+
+#define SN_netscape_revocation_url "nsRevocationUrl"
+#define LN_netscape_revocation_url "Netscape Revocation Url"
+#define NID_netscape_revocation_url 73
+#define OBJ_netscape_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 3L
+
+#define SN_netscape_ca_revocation_url "nsCaRevocationUrl"
+#define LN_netscape_ca_revocation_url "Netscape CA Revocation Url"
+#define NID_netscape_ca_revocation_url 74
+#define OBJ_netscape_ca_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 4L
+
+#define SN_netscape_renewal_url "nsRenewalUrl"
+#define LN_netscape_renewal_url "Netscape Renewal Url"
+#define NID_netscape_renewal_url 75
+#define OBJ_netscape_renewal_url 2L, 16L, 840L, 1L, 113730L, 1L, 7L
+
+#define SN_netscape_ca_policy_url "nsCaPolicyUrl"
+#define LN_netscape_ca_policy_url "Netscape CA Policy Url"
+#define NID_netscape_ca_policy_url 76
+#define OBJ_netscape_ca_policy_url 2L, 16L, 840L, 1L, 113730L, 1L, 8L
+
+#define SN_netscape_ssl_server_name "nsSslServerName"
+#define LN_netscape_ssl_server_name "Netscape SSL Server Name"
+#define NID_netscape_ssl_server_name 77
+#define OBJ_netscape_ssl_server_name 2L, 16L, 840L, 1L, 113730L, 1L, 12L
+
+#define SN_netscape_comment "nsComment"
+#define LN_netscape_comment "Netscape Comment"
+#define NID_netscape_comment 78
+#define OBJ_netscape_comment 2L, 16L, 840L, 1L, 113730L, 1L, 13L
+
+#define SN_netscape_cert_sequence "nsCertSequence"
+#define LN_netscape_cert_sequence "Netscape Certificate Sequence"
+#define NID_netscape_cert_sequence 79
+#define OBJ_netscape_cert_sequence 2L, 16L, 840L, 1L, 113730L, 2L, 5L
+
+#define SN_desx_cbc "DESX-CBC"
+#define LN_desx_cbc "desx-cbc"
+#define NID_desx_cbc 80
+
+#define SN_id_ce "id-ce"
+#define NID_id_ce 81
+#define OBJ_id_ce 2L, 5L, 29L
+
+#define SN_subject_key_identifier "subjectKeyIdentifier"
+#define LN_subject_key_identifier "X509v3 Subject Key Identifier"
+#define NID_subject_key_identifier 82
+#define OBJ_subject_key_identifier 2L, 5L, 29L, 14L
+
+#define SN_key_usage "keyUsage"
+#define LN_key_usage "X509v3 Key Usage"
+#define NID_key_usage 83
+#define OBJ_key_usage 2L, 5L, 29L, 15L
+
+#define SN_private_key_usage_period "privateKeyUsagePeriod"
+#define LN_private_key_usage_period "X509v3 Private Key Usage Period"
+#define NID_private_key_usage_period 84
+#define OBJ_private_key_usage_period 2L, 5L, 29L, 16L
+
+#define SN_subject_alt_name "subjectAltName"
+#define LN_subject_alt_name "X509v3 Subject Alternative Name"
+#define NID_subject_alt_name 85
+#define OBJ_subject_alt_name 2L, 5L, 29L, 17L
+
+#define SN_issuer_alt_name "issuerAltName"
+#define LN_issuer_alt_name "X509v3 Issuer Alternative Name"
+#define NID_issuer_alt_name 86
+#define OBJ_issuer_alt_name 2L, 5L, 29L, 18L
+
+#define SN_basic_constraints "basicConstraints"
+#define LN_basic_constraints "X509v3 Basic Constraints"
+#define NID_basic_constraints 87
+#define OBJ_basic_constraints 2L, 5L, 29L, 19L
+
+#define SN_crl_number "crlNumber"
+#define LN_crl_number "X509v3 CRL Number"
+#define NID_crl_number 88
+#define OBJ_crl_number 2L, 5L, 29L, 20L
+
+#define SN_certificate_policies "certificatePolicies"
+#define LN_certificate_policies "X509v3 Certificate Policies"
+#define NID_certificate_policies 89
+#define OBJ_certificate_policies 2L, 5L, 29L, 32L
+
+#define SN_authority_key_identifier "authorityKeyIdentifier"
+#define LN_authority_key_identifier "X509v3 Authority Key Identifier"
+#define NID_authority_key_identifier 90
+#define OBJ_authority_key_identifier 2L, 5L, 29L, 35L
+
+#define SN_bf_cbc "BF-CBC"
+#define LN_bf_cbc "bf-cbc"
+#define NID_bf_cbc 91
+#define OBJ_bf_cbc 1L, 3L, 6L, 1L, 4L, 1L, 3029L, 1L, 2L
+
+#define SN_bf_ecb "BF-ECB"
+#define LN_bf_ecb "bf-ecb"
+#define NID_bf_ecb 92
+
+#define SN_bf_cfb64 "BF-CFB"
+#define LN_bf_cfb64 "bf-cfb"
+#define NID_bf_cfb64 93
+
+#define SN_bf_ofb64 "BF-OFB"
+#define LN_bf_ofb64 "bf-ofb"
+#define NID_bf_ofb64 94
+
+#define SN_mdc2 "MDC2"
+#define LN_mdc2 "mdc2"
+#define NID_mdc2 95
+#define OBJ_mdc2 2L, 5L, 8L, 3L, 101L
+
+#define SN_mdc2WithRSA "RSA-MDC2"
+#define LN_mdc2WithRSA "mdc2WithRSA"
+#define NID_mdc2WithRSA 96
+#define OBJ_mdc2WithRSA 2L, 5L, 8L, 3L, 100L
+
+#define SN_rc4_40 "RC4-40"
+#define LN_rc4_40 "rc4-40"
+#define NID_rc4_40 97
+
+#define SN_rc2_40_cbc "RC2-40-CBC"
+#define LN_rc2_40_cbc "rc2-40-cbc"
+#define NID_rc2_40_cbc 98
+
+#define SN_givenName "GN"
+#define LN_givenName "givenName"
+#define NID_givenName 99
+#define OBJ_givenName 2L, 5L, 4L, 42L
+
+#define SN_surname "SN"
+#define LN_surname "surname"
+#define NID_surname 100
+#define OBJ_surname 2L, 5L, 4L, 4L
+
+#define SN_initials "initials"
+#define LN_initials "initials"
+#define NID_initials 101
+#define OBJ_initials 2L, 5L, 4L, 43L
+
+#define SN_crl_distribution_points "crlDistributionPoints"
+#define LN_crl_distribution_points "X509v3 CRL Distribution Points"
+#define NID_crl_distribution_points 103
+#define OBJ_crl_distribution_points 2L, 5L, 29L, 31L
+
+#define SN_md5WithRSA "RSA-NP-MD5"
+#define LN_md5WithRSA "md5WithRSA"
+#define NID_md5WithRSA 104
+#define OBJ_md5WithRSA 1L, 3L, 14L, 3L, 2L, 3L
+
+#define LN_serialNumber "serialNumber"
+#define NID_serialNumber 105
+#define OBJ_serialNumber 2L, 5L, 4L, 5L
+
+#define SN_title "title"
+#define LN_title "title"
+#define NID_title 106
+#define OBJ_title 2L, 5L, 4L, 12L
+
+#define LN_description "description"
+#define NID_description 107
+#define OBJ_description 2L, 5L, 4L, 13L
+
+#define SN_cast5_cbc "CAST5-CBC"
+#define LN_cast5_cbc "cast5-cbc"
+#define NID_cast5_cbc 108
+#define OBJ_cast5_cbc 1L, 2L, 840L, 113533L, 7L, 66L, 10L
+
+#define SN_cast5_ecb "CAST5-ECB"
+#define LN_cast5_ecb "cast5-ecb"
+#define NID_cast5_ecb 109
+
+#define SN_cast5_cfb64 "CAST5-CFB"
+#define LN_cast5_cfb64 "cast5-cfb"
+#define NID_cast5_cfb64 110
+
+#define SN_cast5_ofb64 "CAST5-OFB"
+#define LN_cast5_ofb64 "cast5-ofb"
+#define NID_cast5_ofb64 111
+
+#define LN_pbeWithMD5AndCast5_CBC "pbeWithMD5AndCast5CBC"
+#define NID_pbeWithMD5AndCast5_CBC 112
+#define OBJ_pbeWithMD5AndCast5_CBC 1L, 2L, 840L, 113533L, 7L, 66L, 12L
+
+#define SN_dsaWithSHA1 "DSA-SHA1"
+#define LN_dsaWithSHA1 "dsaWithSHA1"
+#define NID_dsaWithSHA1 113
+#define OBJ_dsaWithSHA1 1L, 2L, 840L, 10040L, 4L, 3L
+
+#define SN_md5_sha1 "MD5-SHA1"
+#define LN_md5_sha1 "md5-sha1"
+#define NID_md5_sha1 114
+
+#define SN_sha1WithRSA "RSA-SHA1-2"
+#define LN_sha1WithRSA "sha1WithRSA"
+#define NID_sha1WithRSA 115
+#define OBJ_sha1WithRSA 1L, 3L, 14L, 3L, 2L, 29L
+
+#define SN_dsa "DSA"
+#define LN_dsa "dsaEncryption"
+#define NID_dsa 116
+#define OBJ_dsa 1L, 2L, 840L, 10040L, 4L, 1L
+
+#define SN_ripemd160 "RIPEMD160"
+#define LN_ripemd160 "ripemd160"
+#define NID_ripemd160 117
+#define OBJ_ripemd160 1L, 3L, 36L, 3L, 2L, 1L
+
+#define SN_ripemd160WithRSA "RSA-RIPEMD160"
+#define LN_ripemd160WithRSA "ripemd160WithRSA"
+#define NID_ripemd160WithRSA 119
+#define OBJ_ripemd160WithRSA 1L, 3L, 36L, 3L, 3L, 1L, 2L
+
+#define SN_rc5_cbc "RC5-CBC"
+#define LN_rc5_cbc "rc5-cbc"
+#define NID_rc5_cbc 120
+#define OBJ_rc5_cbc 1L, 2L, 840L, 113549L, 3L, 8L
+
+#define SN_rc5_ecb "RC5-ECB"
+#define LN_rc5_ecb "rc5-ecb"
+#define NID_rc5_ecb 121
+
+#define SN_rc5_cfb64 "RC5-CFB"
+#define LN_rc5_cfb64 "rc5-cfb"
+#define NID_rc5_cfb64 122
+
+#define SN_rc5_ofb64 "RC5-OFB"
+#define LN_rc5_ofb64 "rc5-ofb"
+#define NID_rc5_ofb64 123
+
+#define SN_zlib_compression "ZLIB"
+#define LN_zlib_compression "zlib compression"
+#define NID_zlib_compression 125
+#define OBJ_zlib_compression 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 8L
+
+#define SN_ext_key_usage "extendedKeyUsage"
+#define LN_ext_key_usage "X509v3 Extended Key Usage"
+#define NID_ext_key_usage 126
+#define OBJ_ext_key_usage 2L, 5L, 29L, 37L
+
+#define SN_id_pkix "PKIX"
+#define NID_id_pkix 127
+#define OBJ_id_pkix 1L, 3L, 6L, 1L, 5L, 5L, 7L
+
+#define SN_id_kp "id-kp"
+#define NID_id_kp 128
+#define OBJ_id_kp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L
+
+#define SN_server_auth "serverAuth"
+#define LN_server_auth "TLS Web Server Authentication"
+#define NID_server_auth 129
+#define OBJ_server_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 1L
+
+#define SN_client_auth "clientAuth"
+#define LN_client_auth "TLS Web Client Authentication"
+#define NID_client_auth 130
+#define OBJ_client_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 2L
+
+#define SN_code_sign "codeSigning"
+#define LN_code_sign "Code Signing"
+#define NID_code_sign 131
+#define OBJ_code_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 3L
+
+#define SN_email_protect "emailProtection"
+#define LN_email_protect "E-mail Protection"
+#define NID_email_protect 132
+#define OBJ_email_protect 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 4L
+
+#define SN_time_stamp "timeStamping"
+#define LN_time_stamp "Time Stamping"
+#define NID_time_stamp 133
+#define OBJ_time_stamp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 8L
+
+#define SN_ms_code_ind "msCodeInd"
+#define LN_ms_code_ind "Microsoft Individual Code Signing"
+#define NID_ms_code_ind 134
+#define OBJ_ms_code_ind 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 21L
+
+#define SN_ms_code_com "msCodeCom"
+#define LN_ms_code_com "Microsoft Commercial Code Signing"
+#define NID_ms_code_com 135
+#define OBJ_ms_code_com 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 22L
+
+#define SN_ms_ctl_sign "msCTLSign"
+#define LN_ms_ctl_sign "Microsoft Trust List Signing"
+#define NID_ms_ctl_sign 136
+#define OBJ_ms_ctl_sign 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 1L
+
+#define SN_ms_sgc "msSGC"
+#define LN_ms_sgc "Microsoft Server Gated Crypto"
+#define NID_ms_sgc 137
+#define OBJ_ms_sgc 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 3L
+
+#define SN_ms_efs "msEFS"
+#define LN_ms_efs "Microsoft Encrypted File System"
+#define NID_ms_efs 138
+#define OBJ_ms_efs 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 4L
+
+#define SN_ns_sgc "nsSGC"
+#define LN_ns_sgc "Netscape Server Gated Crypto"
+#define NID_ns_sgc 139
+#define OBJ_ns_sgc 2L, 16L, 840L, 1L, 113730L, 4L, 1L
+
+#define SN_delta_crl "deltaCRL"
+#define LN_delta_crl "X509v3 Delta CRL Indicator"
+#define NID_delta_crl 140
+#define OBJ_delta_crl 2L, 5L, 29L, 27L
+
+#define SN_crl_reason "CRLReason"
+#define LN_crl_reason "X509v3 CRL Reason Code"
+#define NID_crl_reason 141
+#define OBJ_crl_reason 2L, 5L, 29L, 21L
+
+#define SN_invalidity_date "invalidityDate"
+#define LN_invalidity_date "Invalidity Date"
+#define NID_invalidity_date 142
+#define OBJ_invalidity_date 2L, 5L, 29L, 24L
+
+#define SN_sxnet "SXNetID"
+#define LN_sxnet "Strong Extranet ID"
+#define NID_sxnet 143
+#define OBJ_sxnet 1L, 3L, 101L, 1L, 4L, 1L
+
+#define SN_pbe_WithSHA1And128BitRC4 "PBE-SHA1-RC4-128"
+#define LN_pbe_WithSHA1And128BitRC4 "pbeWithSHA1And128BitRC4"
+#define NID_pbe_WithSHA1And128BitRC4 144
+#define OBJ_pbe_WithSHA1And128BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 1L
+
+#define SN_pbe_WithSHA1And40BitRC4 "PBE-SHA1-RC4-40"
+#define LN_pbe_WithSHA1And40BitRC4 "pbeWithSHA1And40BitRC4"
+#define NID_pbe_WithSHA1And40BitRC4 145
+#define OBJ_pbe_WithSHA1And40BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 2L
+
+#define SN_pbe_WithSHA1And3_Key_TripleDES_CBC "PBE-SHA1-3DES"
+#define LN_pbe_WithSHA1And3_Key_TripleDES_CBC "pbeWithSHA1And3-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And3_Key_TripleDES_CBC 146
+#define OBJ_pbe_WithSHA1And3_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 3L
+
+#define SN_pbe_WithSHA1And2_Key_TripleDES_CBC "PBE-SHA1-2DES"
+#define LN_pbe_WithSHA1And2_Key_TripleDES_CBC "pbeWithSHA1And2-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And2_Key_TripleDES_CBC 147
+#define OBJ_pbe_WithSHA1And2_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 4L
+
+#define SN_pbe_WithSHA1And128BitRC2_CBC "PBE-SHA1-RC2-128"
+#define LN_pbe_WithSHA1And128BitRC2_CBC "pbeWithSHA1And128BitRC2-CBC"
+#define NID_pbe_WithSHA1And128BitRC2_CBC 148
+#define OBJ_pbe_WithSHA1And128BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 5L
+
+#define SN_pbe_WithSHA1And40BitRC2_CBC "PBE-SHA1-RC2-40"
+#define LN_pbe_WithSHA1And40BitRC2_CBC "pbeWithSHA1And40BitRC2-CBC"
+#define NID_pbe_WithSHA1And40BitRC2_CBC 149
+#define OBJ_pbe_WithSHA1And40BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 6L
+
+#define LN_keyBag "keyBag"
+#define NID_keyBag 150
+#define OBJ_keyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 1L
+
+#define LN_pkcs8ShroudedKeyBag "pkcs8ShroudedKeyBag"
+#define NID_pkcs8ShroudedKeyBag 151
+#define OBJ_pkcs8ShroudedKeyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 2L
+
+#define LN_certBag "certBag"
+#define NID_certBag 152
+#define OBJ_certBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 3L
+
+#define LN_crlBag "crlBag"
+#define NID_crlBag 153
+#define OBJ_crlBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 4L
+
+#define LN_secretBag "secretBag"
+#define NID_secretBag 154
+#define OBJ_secretBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 5L
+
+#define LN_safeContentsBag "safeContentsBag"
+#define NID_safeContentsBag 155
+#define OBJ_safeContentsBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 6L
+
+#define LN_friendlyName "friendlyName"
+#define NID_friendlyName 156
+#define OBJ_friendlyName 1L, 2L, 840L, 113549L, 1L, 9L, 20L
+
+#define LN_localKeyID "localKeyID"
+#define NID_localKeyID 157
+#define OBJ_localKeyID 1L, 2L, 840L, 113549L, 1L, 9L, 21L
+
+#define LN_x509Certificate "x509Certificate"
+#define NID_x509Certificate 158
+#define OBJ_x509Certificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 1L
+
+#define LN_sdsiCertificate "sdsiCertificate"
+#define NID_sdsiCertificate 159
+#define OBJ_sdsiCertificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 2L
+
+#define LN_x509Crl "x509Crl"
+#define NID_x509Crl 160
+#define OBJ_x509Crl 1L, 2L, 840L, 113549L, 1L, 9L, 23L, 1L
+
+#define LN_pbes2 "PBES2"
+#define NID_pbes2 161
+#define OBJ_pbes2 1L, 2L, 840L, 113549L, 1L, 5L, 13L
+
+#define LN_pbmac1 "PBMAC1"
+#define NID_pbmac1 162
+#define OBJ_pbmac1 1L, 2L, 840L, 113549L, 1L, 5L, 14L
+
+#define LN_hmacWithSHA1 "hmacWithSHA1"
+#define NID_hmacWithSHA1 163
+#define OBJ_hmacWithSHA1 1L, 2L, 840L, 113549L, 2L, 7L
+
+#define SN_id_qt_cps "id-qt-cps"
+#define LN_id_qt_cps "Policy Qualifier CPS"
+#define NID_id_qt_cps 164
+#define OBJ_id_qt_cps 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 1L
+
+#define SN_id_qt_unotice "id-qt-unotice"
+#define LN_id_qt_unotice "Policy Qualifier User Notice"
+#define NID_id_qt_unotice 165
+#define OBJ_id_qt_unotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 2L
+
+#define SN_rc2_64_cbc "RC2-64-CBC"
+#define LN_rc2_64_cbc "rc2-64-cbc"
+#define NID_rc2_64_cbc 166
+
+#define SN_SMIMECapabilities "SMIME-CAPS"
+#define LN_SMIMECapabilities "S/MIME Capabilities"
+#define NID_SMIMECapabilities 167
+#define OBJ_SMIMECapabilities 1L, 2L, 840L, 113549L, 1L, 9L, 15L
+
+#define SN_pbeWithMD2AndRC2_CBC "PBE-MD2-RC2-64"
+#define LN_pbeWithMD2AndRC2_CBC "pbeWithMD2AndRC2-CBC"
+#define NID_pbeWithMD2AndRC2_CBC 168
+#define OBJ_pbeWithMD2AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 4L
+
+#define SN_pbeWithMD5AndRC2_CBC "PBE-MD5-RC2-64"
+#define LN_pbeWithMD5AndRC2_CBC "pbeWithMD5AndRC2-CBC"
+#define NID_pbeWithMD5AndRC2_CBC 169
+#define OBJ_pbeWithMD5AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 6L
+
+#define SN_pbeWithSHA1AndDES_CBC "PBE-SHA1-DES"
+#define LN_pbeWithSHA1AndDES_CBC "pbeWithSHA1AndDES-CBC"
+#define NID_pbeWithSHA1AndDES_CBC 170
+#define OBJ_pbeWithSHA1AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 10L
+
+#define SN_ms_ext_req "msExtReq"
+#define LN_ms_ext_req "Microsoft Extension Request"
+#define NID_ms_ext_req 171
+#define OBJ_ms_ext_req 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 14L
+
+#define SN_ext_req "extReq"
+#define LN_ext_req "Extension Request"
+#define NID_ext_req 172
+#define OBJ_ext_req 1L, 2L, 840L, 113549L, 1L, 9L, 14L
+
+#define SN_name "name"
+#define LN_name "name"
+#define NID_name 173
+#define OBJ_name 2L, 5L, 4L, 41L
+
+#define SN_dnQualifier "dnQualifier"
+#define LN_dnQualifier "dnQualifier"
+#define NID_dnQualifier 174
+#define OBJ_dnQualifier 2L, 5L, 4L, 46L
+
+#define SN_id_pe "id-pe"
+#define NID_id_pe 175
+#define OBJ_id_pe 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L
+
+#define SN_id_ad "id-ad"
+#define NID_id_ad 176
+#define OBJ_id_ad 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L
+
+#define SN_info_access "authorityInfoAccess"
+#define LN_info_access "Authority Information Access"
+#define NID_info_access 177
+#define OBJ_info_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 1L
+
+#define SN_ad_OCSP "OCSP"
+#define LN_ad_OCSP "OCSP"
+#define NID_ad_OCSP 178
+#define OBJ_ad_OCSP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L
+
+#define SN_ad_ca_issuers "caIssuers"
+#define LN_ad_ca_issuers "CA Issuers"
+#define NID_ad_ca_issuers 179
+#define OBJ_ad_ca_issuers 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 2L
+
+#define SN_OCSP_sign "OCSPSigning"
+#define LN_OCSP_sign "OCSP Signing"
+#define NID_OCSP_sign 180
+#define OBJ_OCSP_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 9L
+
+#define SN_iso "ISO"
+#define LN_iso "iso"
+#define NID_iso 181
+#define OBJ_iso 1L
+
+#define SN_member_body "member-body"
+#define LN_member_body "ISO Member Body"
+#define NID_member_body 182
+#define OBJ_member_body 1L, 2L
+
+#define SN_ISO_US "ISO-US"
+#define LN_ISO_US "ISO US Member Body"
+#define NID_ISO_US 183
+#define OBJ_ISO_US 1L, 2L, 840L
+
+#define SN_X9_57 "X9-57"
+#define LN_X9_57 "X9.57"
+#define NID_X9_57 184
+#define OBJ_X9_57 1L, 2L, 840L, 10040L
+
+#define SN_X9cm "X9cm"
+#define LN_X9cm "X9.57 CM ?"
+#define NID_X9cm 185
+#define OBJ_X9cm 1L, 2L, 840L, 10040L, 4L
+
+#define SN_pkcs1 "pkcs1"
+#define NID_pkcs1 186
+#define OBJ_pkcs1 1L, 2L, 840L, 113549L, 1L, 1L
+
+#define SN_pkcs5 "pkcs5"
+#define NID_pkcs5 187
+#define OBJ_pkcs5 1L, 2L, 840L, 113549L, 1L, 5L
+
+#define SN_SMIME "SMIME"
+#define LN_SMIME "S/MIME"
+#define NID_SMIME 188
+#define OBJ_SMIME 1L, 2L, 840L, 113549L, 1L, 9L, 16L
+
+#define SN_id_smime_mod "id-smime-mod"
+#define NID_id_smime_mod 189
+#define OBJ_id_smime_mod 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L
+
+#define SN_id_smime_ct "id-smime-ct"
+#define NID_id_smime_ct 190
+#define OBJ_id_smime_ct 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L
+
+#define SN_id_smime_aa "id-smime-aa"
+#define NID_id_smime_aa 191
+#define OBJ_id_smime_aa 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L
+
+#define SN_id_smime_alg "id-smime-alg"
+#define NID_id_smime_alg 192
+#define OBJ_id_smime_alg 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L
+
+#define SN_id_smime_cd "id-smime-cd"
+#define NID_id_smime_cd 193
+#define OBJ_id_smime_cd 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L
+
+#define SN_id_smime_spq "id-smime-spq"
+#define NID_id_smime_spq 194
+#define OBJ_id_smime_spq 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L
+
+#define SN_id_smime_cti "id-smime-cti"
+#define NID_id_smime_cti 195
+#define OBJ_id_smime_cti 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L
+
+#define SN_id_smime_mod_cms "id-smime-mod-cms"
+#define NID_id_smime_mod_cms 196
+#define OBJ_id_smime_mod_cms 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 1L
+
+#define SN_id_smime_mod_ess "id-smime-mod-ess"
+#define NID_id_smime_mod_ess 197
+#define OBJ_id_smime_mod_ess 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 2L
+
+#define SN_id_smime_mod_oid "id-smime-mod-oid"
+#define NID_id_smime_mod_oid 198
+#define OBJ_id_smime_mod_oid 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 3L
+
+#define SN_id_smime_mod_msg_v3 "id-smime-mod-msg-v3"
+#define NID_id_smime_mod_msg_v3 199
+#define OBJ_id_smime_mod_msg_v3 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 4L
+
+#define SN_id_smime_mod_ets_eSignature_88 "id-smime-mod-ets-eSignature-88"
+#define NID_id_smime_mod_ets_eSignature_88 200
+#define OBJ_id_smime_mod_ets_eSignature_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 5L
+
+#define SN_id_smime_mod_ets_eSignature_97 "id-smime-mod-ets-eSignature-97"
+#define NID_id_smime_mod_ets_eSignature_97 201
+#define OBJ_id_smime_mod_ets_eSignature_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 6L
+
+#define SN_id_smime_mod_ets_eSigPolicy_88 "id-smime-mod-ets-eSigPolicy-88"
+#define NID_id_smime_mod_ets_eSigPolicy_88 202
+#define OBJ_id_smime_mod_ets_eSigPolicy_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 7L
+
+#define SN_id_smime_mod_ets_eSigPolicy_97 "id-smime-mod-ets-eSigPolicy-97"
+#define NID_id_smime_mod_ets_eSigPolicy_97 203
+#define OBJ_id_smime_mod_ets_eSigPolicy_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 8L
+
+#define SN_id_smime_ct_receipt "id-smime-ct-receipt"
+#define NID_id_smime_ct_receipt 204
+#define OBJ_id_smime_ct_receipt 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 1L
+
+#define SN_id_smime_ct_authData "id-smime-ct-authData"
+#define NID_id_smime_ct_authData 205
+#define OBJ_id_smime_ct_authData 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 2L
+
+#define SN_id_smime_ct_publishCert "id-smime-ct-publishCert"
+#define NID_id_smime_ct_publishCert 206
+#define OBJ_id_smime_ct_publishCert 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 3L
+
+#define SN_id_smime_ct_TSTInfo "id-smime-ct-TSTInfo"
+#define NID_id_smime_ct_TSTInfo 207
+#define OBJ_id_smime_ct_TSTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 4L
+
+#define SN_id_smime_ct_TDTInfo "id-smime-ct-TDTInfo"
+#define NID_id_smime_ct_TDTInfo 208
+#define OBJ_id_smime_ct_TDTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 5L
+
+#define SN_id_smime_ct_contentInfo "id-smime-ct-contentInfo"
+#define NID_id_smime_ct_contentInfo 209
+#define OBJ_id_smime_ct_contentInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 6L
+
+#define SN_id_smime_ct_DVCSRequestData "id-smime-ct-DVCSRequestData"
+#define NID_id_smime_ct_DVCSRequestData 210
+#define OBJ_id_smime_ct_DVCSRequestData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 7L
+
+#define SN_id_smime_ct_DVCSResponseData "id-smime-ct-DVCSResponseData"
+#define NID_id_smime_ct_DVCSResponseData 211
+#define OBJ_id_smime_ct_DVCSResponseData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 8L
+
+#define SN_id_smime_aa_receiptRequest "id-smime-aa-receiptRequest"
+#define NID_id_smime_aa_receiptRequest 212
+#define OBJ_id_smime_aa_receiptRequest \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 1L
+
+#define SN_id_smime_aa_securityLabel "id-smime-aa-securityLabel"
+#define NID_id_smime_aa_securityLabel 213
+#define OBJ_id_smime_aa_securityLabel 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 2L
+
+#define SN_id_smime_aa_mlExpandHistory "id-smime-aa-mlExpandHistory"
+#define NID_id_smime_aa_mlExpandHistory 214
+#define OBJ_id_smime_aa_mlExpandHistory \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 3L
+
+#define SN_id_smime_aa_contentHint "id-smime-aa-contentHint"
+#define NID_id_smime_aa_contentHint 215
+#define OBJ_id_smime_aa_contentHint 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 4L
+
+#define SN_id_smime_aa_msgSigDigest "id-smime-aa-msgSigDigest"
+#define NID_id_smime_aa_msgSigDigest 216
+#define OBJ_id_smime_aa_msgSigDigest 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 5L
+
+#define SN_id_smime_aa_encapContentType "id-smime-aa-encapContentType"
+#define NID_id_smime_aa_encapContentType 217
+#define OBJ_id_smime_aa_encapContentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 6L
+
+#define SN_id_smime_aa_contentIdentifier "id-smime-aa-contentIdentifier"
+#define NID_id_smime_aa_contentIdentifier 218
+#define OBJ_id_smime_aa_contentIdentifier \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 7L
+
+#define SN_id_smime_aa_macValue "id-smime-aa-macValue"
+#define NID_id_smime_aa_macValue 219
+#define OBJ_id_smime_aa_macValue 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 8L
+
+#define SN_id_smime_aa_equivalentLabels "id-smime-aa-equivalentLabels"
+#define NID_id_smime_aa_equivalentLabels 220
+#define OBJ_id_smime_aa_equivalentLabels \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 9L
+
+#define SN_id_smime_aa_contentReference "id-smime-aa-contentReference"
+#define NID_id_smime_aa_contentReference 221
+#define OBJ_id_smime_aa_contentReference \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 10L
+
+#define SN_id_smime_aa_encrypKeyPref "id-smime-aa-encrypKeyPref"
+#define NID_id_smime_aa_encrypKeyPref 222
+#define OBJ_id_smime_aa_encrypKeyPref \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 11L
+
+#define SN_id_smime_aa_signingCertificate "id-smime-aa-signingCertificate"
+#define NID_id_smime_aa_signingCertificate 223
+#define OBJ_id_smime_aa_signingCertificate \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 12L
+
+#define SN_id_smime_aa_smimeEncryptCerts "id-smime-aa-smimeEncryptCerts"
+#define NID_id_smime_aa_smimeEncryptCerts 224
+#define OBJ_id_smime_aa_smimeEncryptCerts \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 13L
+
+#define SN_id_smime_aa_timeStampToken "id-smime-aa-timeStampToken"
+#define NID_id_smime_aa_timeStampToken 225
+#define OBJ_id_smime_aa_timeStampToken \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 14L
+
+#define SN_id_smime_aa_ets_sigPolicyId "id-smime-aa-ets-sigPolicyId"
+#define NID_id_smime_aa_ets_sigPolicyId 226
+#define OBJ_id_smime_aa_ets_sigPolicyId \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 15L
+
+#define SN_id_smime_aa_ets_commitmentType "id-smime-aa-ets-commitmentType"
+#define NID_id_smime_aa_ets_commitmentType 227
+#define OBJ_id_smime_aa_ets_commitmentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 16L
+
+#define SN_id_smime_aa_ets_signerLocation "id-smime-aa-ets-signerLocation"
+#define NID_id_smime_aa_ets_signerLocation 228
+#define OBJ_id_smime_aa_ets_signerLocation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 17L
+
+#define SN_id_smime_aa_ets_signerAttr "id-smime-aa-ets-signerAttr"
+#define NID_id_smime_aa_ets_signerAttr 229
+#define OBJ_id_smime_aa_ets_signerAttr \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 18L
+
+#define SN_id_smime_aa_ets_otherSigCert "id-smime-aa-ets-otherSigCert"
+#define NID_id_smime_aa_ets_otherSigCert 230
+#define OBJ_id_smime_aa_ets_otherSigCert \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 19L
+
+#define SN_id_smime_aa_ets_contentTimestamp "id-smime-aa-ets-contentTimestamp"
+#define NID_id_smime_aa_ets_contentTimestamp 231
+#define OBJ_id_smime_aa_ets_contentTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 20L
+
+#define SN_id_smime_aa_ets_CertificateRefs "id-smime-aa-ets-CertificateRefs"
+#define NID_id_smime_aa_ets_CertificateRefs 232
+#define OBJ_id_smime_aa_ets_CertificateRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 21L
+
+#define SN_id_smime_aa_ets_RevocationRefs "id-smime-aa-ets-RevocationRefs"
+#define NID_id_smime_aa_ets_RevocationRefs 233
+#define OBJ_id_smime_aa_ets_RevocationRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 22L
+
+#define SN_id_smime_aa_ets_certValues "id-smime-aa-ets-certValues"
+#define NID_id_smime_aa_ets_certValues 234
+#define OBJ_id_smime_aa_ets_certValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 23L
+
+#define SN_id_smime_aa_ets_revocationValues "id-smime-aa-ets-revocationValues"
+#define NID_id_smime_aa_ets_revocationValues 235
+#define OBJ_id_smime_aa_ets_revocationValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 24L
+
+#define SN_id_smime_aa_ets_escTimeStamp "id-smime-aa-ets-escTimeStamp"
+#define NID_id_smime_aa_ets_escTimeStamp 236
+#define OBJ_id_smime_aa_ets_escTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 25L
+
+#define SN_id_smime_aa_ets_certCRLTimestamp "id-smime-aa-ets-certCRLTimestamp"
+#define NID_id_smime_aa_ets_certCRLTimestamp 237
+#define OBJ_id_smime_aa_ets_certCRLTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 26L
+
+#define SN_id_smime_aa_ets_archiveTimeStamp "id-smime-aa-ets-archiveTimeStamp"
+#define NID_id_smime_aa_ets_archiveTimeStamp 238
+#define OBJ_id_smime_aa_ets_archiveTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 27L
+
+#define SN_id_smime_aa_signatureType "id-smime-aa-signatureType"
+#define NID_id_smime_aa_signatureType 239
+#define OBJ_id_smime_aa_signatureType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 28L
+
+#define SN_id_smime_aa_dvcs_dvc "id-smime-aa-dvcs-dvc"
+#define NID_id_smime_aa_dvcs_dvc 240
+#define OBJ_id_smime_aa_dvcs_dvc 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 29L
+
+#define SN_id_smime_alg_ESDHwith3DES "id-smime-alg-ESDHwith3DES"
+#define NID_id_smime_alg_ESDHwith3DES 241
+#define OBJ_id_smime_alg_ESDHwith3DES 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 1L
+
+#define SN_id_smime_alg_ESDHwithRC2 "id-smime-alg-ESDHwithRC2"
+#define NID_id_smime_alg_ESDHwithRC2 242
+#define OBJ_id_smime_alg_ESDHwithRC2 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 2L
+
+#define SN_id_smime_alg_3DESwrap "id-smime-alg-3DESwrap"
+#define NID_id_smime_alg_3DESwrap 243
+#define OBJ_id_smime_alg_3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 3L
+
+#define SN_id_smime_alg_RC2wrap "id-smime-alg-RC2wrap"
+#define NID_id_smime_alg_RC2wrap 244
+#define OBJ_id_smime_alg_RC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 4L
+
+#define SN_id_smime_alg_ESDH "id-smime-alg-ESDH"
+#define NID_id_smime_alg_ESDH 245
+#define OBJ_id_smime_alg_ESDH 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 5L
+
+#define SN_id_smime_alg_CMS3DESwrap "id-smime-alg-CMS3DESwrap"
+#define NID_id_smime_alg_CMS3DESwrap 246
+#define OBJ_id_smime_alg_CMS3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 6L
+
+#define SN_id_smime_alg_CMSRC2wrap "id-smime-alg-CMSRC2wrap"
+#define NID_id_smime_alg_CMSRC2wrap 247
+#define OBJ_id_smime_alg_CMSRC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 7L
+
+#define SN_id_smime_cd_ldap "id-smime-cd-ldap"
+#define NID_id_smime_cd_ldap 248
+#define OBJ_id_smime_cd_ldap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L, 1L
+
+#define SN_id_smime_spq_ets_sqt_uri "id-smime-spq-ets-sqt-uri"
+#define NID_id_smime_spq_ets_sqt_uri 249
+#define OBJ_id_smime_spq_ets_sqt_uri 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 1L
+
+#define SN_id_smime_spq_ets_sqt_unotice "id-smime-spq-ets-sqt-unotice"
+#define NID_id_smime_spq_ets_sqt_unotice 250
+#define OBJ_id_smime_spq_ets_sqt_unotice \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 2L
+
+#define SN_id_smime_cti_ets_proofOfOrigin "id-smime-cti-ets-proofOfOrigin"
+#define NID_id_smime_cti_ets_proofOfOrigin 251
+#define OBJ_id_smime_cti_ets_proofOfOrigin \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 1L
+
+#define SN_id_smime_cti_ets_proofOfReceipt "id-smime-cti-ets-proofOfReceipt"
+#define NID_id_smime_cti_ets_proofOfReceipt 252
+#define OBJ_id_smime_cti_ets_proofOfReceipt \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 2L
+
+#define SN_id_smime_cti_ets_proofOfDelivery "id-smime-cti-ets-proofOfDelivery"
+#define NID_id_smime_cti_ets_proofOfDelivery 253
+#define OBJ_id_smime_cti_ets_proofOfDelivery \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 3L
+
+#define SN_id_smime_cti_ets_proofOfSender "id-smime-cti-ets-proofOfSender"
+#define NID_id_smime_cti_ets_proofOfSender 254
+#define OBJ_id_smime_cti_ets_proofOfSender \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 4L
+
+#define SN_id_smime_cti_ets_proofOfApproval "id-smime-cti-ets-proofOfApproval"
+#define NID_id_smime_cti_ets_proofOfApproval 255
+#define OBJ_id_smime_cti_ets_proofOfApproval \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 5L
+
+#define SN_id_smime_cti_ets_proofOfCreation "id-smime-cti-ets-proofOfCreation"
+#define NID_id_smime_cti_ets_proofOfCreation 256
+#define OBJ_id_smime_cti_ets_proofOfCreation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 6L
+
+#define SN_md4 "MD4"
+#define LN_md4 "md4"
+#define NID_md4 257
+#define OBJ_md4 1L, 2L, 840L, 113549L, 2L, 4L
+
+#define SN_id_pkix_mod "id-pkix-mod"
+#define NID_id_pkix_mod 258
+#define OBJ_id_pkix_mod 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L
+
+#define SN_id_qt "id-qt"
+#define NID_id_qt 259
+#define OBJ_id_qt 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L
+
+#define SN_id_it "id-it"
+#define NID_id_it 260
+#define OBJ_id_it 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L
+
+#define SN_id_pkip "id-pkip"
+#define NID_id_pkip 261
+#define OBJ_id_pkip 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L
+
+#define SN_id_alg "id-alg"
+#define NID_id_alg 262
+#define OBJ_id_alg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L
+
+#define SN_id_cmc "id-cmc"
+#define NID_id_cmc 263
+#define OBJ_id_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L
+
+#define SN_id_on "id-on"
+#define NID_id_on 264
+#define OBJ_id_on 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L
+
+#define SN_id_pda "id-pda"
+#define NID_id_pda 265
+#define OBJ_id_pda 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L
+
+#define SN_id_aca "id-aca"
+#define NID_id_aca 266
+#define OBJ_id_aca 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L
+
+#define SN_id_qcs "id-qcs"
+#define NID_id_qcs 267
+#define OBJ_id_qcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L
+
+#define SN_id_cct "id-cct"
+#define NID_id_cct 268
+#define OBJ_id_cct 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L
+
+#define SN_id_pkix1_explicit_88 "id-pkix1-explicit-88"
+#define NID_id_pkix1_explicit_88 269
+#define OBJ_id_pkix1_explicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 1L
+
+#define SN_id_pkix1_implicit_88 "id-pkix1-implicit-88"
+#define NID_id_pkix1_implicit_88 270
+#define OBJ_id_pkix1_implicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 2L
+
+#define SN_id_pkix1_explicit_93 "id-pkix1-explicit-93"
+#define NID_id_pkix1_explicit_93 271
+#define OBJ_id_pkix1_explicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 3L
+
+#define SN_id_pkix1_implicit_93 "id-pkix1-implicit-93"
+#define NID_id_pkix1_implicit_93 272
+#define OBJ_id_pkix1_implicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 4L
+
+#define SN_id_mod_crmf "id-mod-crmf"
+#define NID_id_mod_crmf 273
+#define OBJ_id_mod_crmf 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 5L
+
+#define SN_id_mod_cmc "id-mod-cmc"
+#define NID_id_mod_cmc 274
+#define OBJ_id_mod_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 6L
+
+#define SN_id_mod_kea_profile_88 "id-mod-kea-profile-88"
+#define NID_id_mod_kea_profile_88 275
+#define OBJ_id_mod_kea_profile_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 7L
+
+#define SN_id_mod_kea_profile_93 "id-mod-kea-profile-93"
+#define NID_id_mod_kea_profile_93 276
+#define OBJ_id_mod_kea_profile_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 8L
+
+#define SN_id_mod_cmp "id-mod-cmp"
+#define NID_id_mod_cmp 277
+#define OBJ_id_mod_cmp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 9L
+
+#define SN_id_mod_qualified_cert_88 "id-mod-qualified-cert-88"
+#define NID_id_mod_qualified_cert_88 278
+#define OBJ_id_mod_qualified_cert_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 10L
+
+#define SN_id_mod_qualified_cert_93 "id-mod-qualified-cert-93"
+#define NID_id_mod_qualified_cert_93 279
+#define OBJ_id_mod_qualified_cert_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 11L
+
+#define SN_id_mod_attribute_cert "id-mod-attribute-cert"
+#define NID_id_mod_attribute_cert 280
+#define OBJ_id_mod_attribute_cert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 12L
+
+#define SN_id_mod_timestamp_protocol "id-mod-timestamp-protocol"
+#define NID_id_mod_timestamp_protocol 281
+#define OBJ_id_mod_timestamp_protocol 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 13L
+
+#define SN_id_mod_ocsp "id-mod-ocsp"
+#define NID_id_mod_ocsp 282
+#define OBJ_id_mod_ocsp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 14L
+
+#define SN_id_mod_dvcs "id-mod-dvcs"
+#define NID_id_mod_dvcs 283
+#define OBJ_id_mod_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 15L
+
+#define SN_id_mod_cmp2000 "id-mod-cmp2000"
+#define NID_id_mod_cmp2000 284
+#define OBJ_id_mod_cmp2000 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 16L
+
+#define SN_biometricInfo "biometricInfo"
+#define LN_biometricInfo "Biometric Info"
+#define NID_biometricInfo 285
+#define OBJ_biometricInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 2L
+
+#define SN_qcStatements "qcStatements"
+#define NID_qcStatements 286
+#define OBJ_qcStatements 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 3L
+
+#define SN_ac_auditEntity "ac-auditEntity"
+#define NID_ac_auditEntity 287
+#define OBJ_ac_auditEntity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 4L
+
+#define SN_ac_targeting "ac-targeting"
+#define NID_ac_targeting 288
+#define OBJ_ac_targeting 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 5L
+
+#define SN_aaControls "aaControls"
+#define NID_aaControls 289
+#define OBJ_aaControls 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 6L
+
+#define SN_sbgp_ipAddrBlock "sbgp-ipAddrBlock"
+#define NID_sbgp_ipAddrBlock 290
+#define OBJ_sbgp_ipAddrBlock 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 7L
+
+#define SN_sbgp_autonomousSysNum "sbgp-autonomousSysNum"
+#define NID_sbgp_autonomousSysNum 291
+#define OBJ_sbgp_autonomousSysNum 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 8L
+
+#define SN_sbgp_routerIdentifier "sbgp-routerIdentifier"
+#define NID_sbgp_routerIdentifier 292
+#define OBJ_sbgp_routerIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 9L
+
+#define SN_textNotice "textNotice"
+#define NID_textNotice 293
+#define OBJ_textNotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 3L
+
+#define SN_ipsecEndSystem "ipsecEndSystem"
+#define LN_ipsecEndSystem "IPSec End System"
+#define NID_ipsecEndSystem 294
+#define OBJ_ipsecEndSystem 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 5L
+
+#define SN_ipsecTunnel "ipsecTunnel"
+#define LN_ipsecTunnel "IPSec Tunnel"
+#define NID_ipsecTunnel 295
+#define OBJ_ipsecTunnel 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 6L
+
+#define SN_ipsecUser "ipsecUser"
+#define LN_ipsecUser "IPSec User"
+#define NID_ipsecUser 296
+#define OBJ_ipsecUser 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 7L
+
+#define SN_dvcs "DVCS"
+#define LN_dvcs "dvcs"
+#define NID_dvcs 297
+#define OBJ_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 10L
+
+#define SN_id_it_caProtEncCert "id-it-caProtEncCert"
+#define NID_id_it_caProtEncCert 298
+#define OBJ_id_it_caProtEncCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 1L
+
+#define SN_id_it_signKeyPairTypes "id-it-signKeyPairTypes"
+#define NID_id_it_signKeyPairTypes 299
+#define OBJ_id_it_signKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 2L
+
+#define SN_id_it_encKeyPairTypes "id-it-encKeyPairTypes"
+#define NID_id_it_encKeyPairTypes 300
+#define OBJ_id_it_encKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 3L
+
+#define SN_id_it_preferredSymmAlg "id-it-preferredSymmAlg"
+#define NID_id_it_preferredSymmAlg 301
+#define OBJ_id_it_preferredSymmAlg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 4L
+
+#define SN_id_it_caKeyUpdateInfo "id-it-caKeyUpdateInfo"
+#define NID_id_it_caKeyUpdateInfo 302
+#define OBJ_id_it_caKeyUpdateInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 5L
+
+#define SN_id_it_currentCRL "id-it-currentCRL"
+#define NID_id_it_currentCRL 303
+#define OBJ_id_it_currentCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 6L
+
+#define SN_id_it_unsupportedOIDs "id-it-unsupportedOIDs"
+#define NID_id_it_unsupportedOIDs 304
+#define OBJ_id_it_unsupportedOIDs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 7L
+
+#define SN_id_it_subscriptionRequest "id-it-subscriptionRequest"
+#define NID_id_it_subscriptionRequest 305
+#define OBJ_id_it_subscriptionRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 8L
+
+#define SN_id_it_subscriptionResponse "id-it-subscriptionResponse"
+#define NID_id_it_subscriptionResponse 306
+#define OBJ_id_it_subscriptionResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 9L
+
+#define SN_id_it_keyPairParamReq "id-it-keyPairParamReq"
+#define NID_id_it_keyPairParamReq 307
+#define OBJ_id_it_keyPairParamReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 10L
+
+#define SN_id_it_keyPairParamRep "id-it-keyPairParamRep"
+#define NID_id_it_keyPairParamRep 308
+#define OBJ_id_it_keyPairParamRep 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 11L
+
+#define SN_id_it_revPassphrase "id-it-revPassphrase"
+#define NID_id_it_revPassphrase 309
+#define OBJ_id_it_revPassphrase 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 12L
+
+#define SN_id_it_implicitConfirm "id-it-implicitConfirm"
+#define NID_id_it_implicitConfirm 310
+#define OBJ_id_it_implicitConfirm 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 13L
+
+#define SN_id_it_confirmWaitTime "id-it-confirmWaitTime"
+#define NID_id_it_confirmWaitTime 311
+#define OBJ_id_it_confirmWaitTime 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 14L
+
+#define SN_id_it_origPKIMessage "id-it-origPKIMessage"
+#define NID_id_it_origPKIMessage 312
+#define OBJ_id_it_origPKIMessage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 15L
+
+#define SN_id_regCtrl "id-regCtrl"
+#define NID_id_regCtrl 313
+#define OBJ_id_regCtrl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L
+
+#define SN_id_regInfo "id-regInfo"
+#define NID_id_regInfo 314
+#define OBJ_id_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L
+
+#define SN_id_regCtrl_regToken "id-regCtrl-regToken"
+#define NID_id_regCtrl_regToken 315
+#define OBJ_id_regCtrl_regToken 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 1L
+
+#define SN_id_regCtrl_authenticator "id-regCtrl-authenticator"
+#define NID_id_regCtrl_authenticator 316
+#define OBJ_id_regCtrl_authenticator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 2L
+
+#define SN_id_regCtrl_pkiPublicationInfo "id-regCtrl-pkiPublicationInfo"
+#define NID_id_regCtrl_pkiPublicationInfo 317
+#define OBJ_id_regCtrl_pkiPublicationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 3L
+
+#define SN_id_regCtrl_pkiArchiveOptions "id-regCtrl-pkiArchiveOptions"
+#define NID_id_regCtrl_pkiArchiveOptions 318
+#define OBJ_id_regCtrl_pkiArchiveOptions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 4L
+
+#define SN_id_regCtrl_oldCertID "id-regCtrl-oldCertID"
+#define NID_id_regCtrl_oldCertID 319
+#define OBJ_id_regCtrl_oldCertID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 5L
+
+#define SN_id_regCtrl_protocolEncrKey "id-regCtrl-protocolEncrKey"
+#define NID_id_regCtrl_protocolEncrKey 320
+#define OBJ_id_regCtrl_protocolEncrKey 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 6L
+
+#define SN_id_regInfo_utf8Pairs "id-regInfo-utf8Pairs"
+#define NID_id_regInfo_utf8Pairs 321
+#define OBJ_id_regInfo_utf8Pairs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 1L
+
+#define SN_id_regInfo_certReq "id-regInfo-certReq"
+#define NID_id_regInfo_certReq 322
+#define OBJ_id_regInfo_certReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 2L
+
+#define SN_id_alg_des40 "id-alg-des40"
+#define NID_id_alg_des40 323
+#define OBJ_id_alg_des40 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 1L
+
+#define SN_id_alg_noSignature "id-alg-noSignature"
+#define NID_id_alg_noSignature 324
+#define OBJ_id_alg_noSignature 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 2L
+
+#define SN_id_alg_dh_sig_hmac_sha1 "id-alg-dh-sig-hmac-sha1"
+#define NID_id_alg_dh_sig_hmac_sha1 325
+#define OBJ_id_alg_dh_sig_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 3L
+
+#define SN_id_alg_dh_pop "id-alg-dh-pop"
+#define NID_id_alg_dh_pop 326
+#define OBJ_id_alg_dh_pop 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 4L
+
+#define SN_id_cmc_statusInfo "id-cmc-statusInfo"
+#define NID_id_cmc_statusInfo 327
+#define OBJ_id_cmc_statusInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 1L
+
+#define SN_id_cmc_identification "id-cmc-identification"
+#define NID_id_cmc_identification 328
+#define OBJ_id_cmc_identification 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 2L
+
+#define SN_id_cmc_identityProof "id-cmc-identityProof"
+#define NID_id_cmc_identityProof 329
+#define OBJ_id_cmc_identityProof 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 3L
+
+#define SN_id_cmc_dataReturn "id-cmc-dataReturn"
+#define NID_id_cmc_dataReturn 330
+#define OBJ_id_cmc_dataReturn 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 4L
+
+#define SN_id_cmc_transactionId "id-cmc-transactionId"
+#define NID_id_cmc_transactionId 331
+#define OBJ_id_cmc_transactionId 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 5L
+
+#define SN_id_cmc_senderNonce "id-cmc-senderNonce"
+#define NID_id_cmc_senderNonce 332
+#define OBJ_id_cmc_senderNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 6L
+
+#define SN_id_cmc_recipientNonce "id-cmc-recipientNonce"
+#define NID_id_cmc_recipientNonce 333
+#define OBJ_id_cmc_recipientNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 7L
+
+#define SN_id_cmc_addExtensions "id-cmc-addExtensions"
+#define NID_id_cmc_addExtensions 334
+#define OBJ_id_cmc_addExtensions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 8L
+
+#define SN_id_cmc_encryptedPOP "id-cmc-encryptedPOP"
+#define NID_id_cmc_encryptedPOP 335
+#define OBJ_id_cmc_encryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 9L
+
+#define SN_id_cmc_decryptedPOP "id-cmc-decryptedPOP"
+#define NID_id_cmc_decryptedPOP 336
+#define OBJ_id_cmc_decryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 10L
+
+#define SN_id_cmc_lraPOPWitness "id-cmc-lraPOPWitness"
+#define NID_id_cmc_lraPOPWitness 337
+#define OBJ_id_cmc_lraPOPWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 11L
+
+#define SN_id_cmc_getCert "id-cmc-getCert"
+#define NID_id_cmc_getCert 338
+#define OBJ_id_cmc_getCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 15L
+
+#define SN_id_cmc_getCRL "id-cmc-getCRL"
+#define NID_id_cmc_getCRL 339
+#define OBJ_id_cmc_getCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 16L
+
+#define SN_id_cmc_revokeRequest "id-cmc-revokeRequest"
+#define NID_id_cmc_revokeRequest 340
+#define OBJ_id_cmc_revokeRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 17L
+
+#define SN_id_cmc_regInfo "id-cmc-regInfo"
+#define NID_id_cmc_regInfo 341
+#define OBJ_id_cmc_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 18L
+
+#define SN_id_cmc_responseInfo "id-cmc-responseInfo"
+#define NID_id_cmc_responseInfo 342
+#define OBJ_id_cmc_responseInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 19L
+
+#define SN_id_cmc_queryPending "id-cmc-queryPending"
+#define NID_id_cmc_queryPending 343
+#define OBJ_id_cmc_queryPending 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 21L
+
+#define SN_id_cmc_popLinkRandom "id-cmc-popLinkRandom"
+#define NID_id_cmc_popLinkRandom 344
+#define OBJ_id_cmc_popLinkRandom 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 22L
+
+#define SN_id_cmc_popLinkWitness "id-cmc-popLinkWitness"
+#define NID_id_cmc_popLinkWitness 345
+#define OBJ_id_cmc_popLinkWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 23L
+
+#define SN_id_cmc_confirmCertAcceptance "id-cmc-confirmCertAcceptance"
+#define NID_id_cmc_confirmCertAcceptance 346
+#define OBJ_id_cmc_confirmCertAcceptance 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 24L
+
+#define SN_id_on_personalData "id-on-personalData"
+#define NID_id_on_personalData 347
+#define OBJ_id_on_personalData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 1L
+
+#define SN_id_pda_dateOfBirth "id-pda-dateOfBirth"
+#define NID_id_pda_dateOfBirth 348
+#define OBJ_id_pda_dateOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 1L
+
+#define SN_id_pda_placeOfBirth "id-pda-placeOfBirth"
+#define NID_id_pda_placeOfBirth 349
+#define OBJ_id_pda_placeOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 2L
+
+#define SN_id_pda_gender "id-pda-gender"
+#define NID_id_pda_gender 351
+#define OBJ_id_pda_gender 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 3L
+
+#define SN_id_pda_countryOfCitizenship "id-pda-countryOfCitizenship"
+#define NID_id_pda_countryOfCitizenship 352
+#define OBJ_id_pda_countryOfCitizenship 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 4L
+
+#define SN_id_pda_countryOfResidence "id-pda-countryOfResidence"
+#define NID_id_pda_countryOfResidence 353
+#define OBJ_id_pda_countryOfResidence 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 5L
+
+#define SN_id_aca_authenticationInfo "id-aca-authenticationInfo"
+#define NID_id_aca_authenticationInfo 354
+#define OBJ_id_aca_authenticationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 1L
+
+#define SN_id_aca_accessIdentity "id-aca-accessIdentity"
+#define NID_id_aca_accessIdentity 355
+#define OBJ_id_aca_accessIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 2L
+
+#define SN_id_aca_chargingIdentity "id-aca-chargingIdentity"
+#define NID_id_aca_chargingIdentity 356
+#define OBJ_id_aca_chargingIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 3L
+
+#define SN_id_aca_group "id-aca-group"
+#define NID_id_aca_group 357
+#define OBJ_id_aca_group 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 4L
+
+#define SN_id_aca_role "id-aca-role"
+#define NID_id_aca_role 358
+#define OBJ_id_aca_role 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 5L
+
+#define SN_id_qcs_pkixQCSyntax_v1 "id-qcs-pkixQCSyntax-v1"
+#define NID_id_qcs_pkixQCSyntax_v1 359
+#define OBJ_id_qcs_pkixQCSyntax_v1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L, 1L
+
+#define SN_id_cct_crs "id-cct-crs"
+#define NID_id_cct_crs 360
+#define OBJ_id_cct_crs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 1L
+
+#define SN_id_cct_PKIData "id-cct-PKIData"
+#define NID_id_cct_PKIData 361
+#define OBJ_id_cct_PKIData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 2L
+
+#define SN_id_cct_PKIResponse "id-cct-PKIResponse"
+#define NID_id_cct_PKIResponse 362
+#define OBJ_id_cct_PKIResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 3L
+
+#define SN_ad_timeStamping "ad_timestamping"
+#define LN_ad_timeStamping "AD Time Stamping"
+#define NID_ad_timeStamping 363
+#define OBJ_ad_timeStamping 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 3L
+
+#define SN_ad_dvcs "AD_DVCS"
+#define LN_ad_dvcs "ad dvcs"
+#define NID_ad_dvcs 364
+#define OBJ_ad_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 4L
+
+#define SN_id_pkix_OCSP_basic "basicOCSPResponse"
+#define LN_id_pkix_OCSP_basic "Basic OCSP Response"
+#define NID_id_pkix_OCSP_basic 365
+#define OBJ_id_pkix_OCSP_basic 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 1L
+
+#define SN_id_pkix_OCSP_Nonce "Nonce"
+#define LN_id_pkix_OCSP_Nonce "OCSP Nonce"
+#define NID_id_pkix_OCSP_Nonce 366
+#define OBJ_id_pkix_OCSP_Nonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 2L
+
+#define SN_id_pkix_OCSP_CrlID "CrlID"
+#define LN_id_pkix_OCSP_CrlID "OCSP CRL ID"
+#define NID_id_pkix_OCSP_CrlID 367
+#define OBJ_id_pkix_OCSP_CrlID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 3L
+
+#define SN_id_pkix_OCSP_acceptableResponses "acceptableResponses"
+#define LN_id_pkix_OCSP_acceptableResponses "Acceptable OCSP Responses"
+#define NID_id_pkix_OCSP_acceptableResponses 368
+#define OBJ_id_pkix_OCSP_acceptableResponses \
+  1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 4L
+
+#define SN_id_pkix_OCSP_noCheck "noCheck"
+#define LN_id_pkix_OCSP_noCheck "OCSP No Check"
+#define NID_id_pkix_OCSP_noCheck 369
+#define OBJ_id_pkix_OCSP_noCheck 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 5L
+
+#define SN_id_pkix_OCSP_archiveCutoff "archiveCutoff"
+#define LN_id_pkix_OCSP_archiveCutoff "OCSP Archive Cutoff"
+#define NID_id_pkix_OCSP_archiveCutoff 370
+#define OBJ_id_pkix_OCSP_archiveCutoff 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 6L
+
+#define SN_id_pkix_OCSP_serviceLocator "serviceLocator"
+#define LN_id_pkix_OCSP_serviceLocator "OCSP Service Locator"
+#define NID_id_pkix_OCSP_serviceLocator 371
+#define OBJ_id_pkix_OCSP_serviceLocator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 7L
+
+#define SN_id_pkix_OCSP_extendedStatus "extendedStatus"
+#define LN_id_pkix_OCSP_extendedStatus "Extended OCSP Status"
+#define NID_id_pkix_OCSP_extendedStatus 372
+#define OBJ_id_pkix_OCSP_extendedStatus 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 8L
+
+#define SN_id_pkix_OCSP_valid "valid"
+#define NID_id_pkix_OCSP_valid 373
+#define OBJ_id_pkix_OCSP_valid 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 9L
+
+#define SN_id_pkix_OCSP_path "path"
+#define NID_id_pkix_OCSP_path 374
+#define OBJ_id_pkix_OCSP_path 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 10L
+
+#define SN_id_pkix_OCSP_trustRoot "trustRoot"
+#define LN_id_pkix_OCSP_trustRoot "Trust Root"
+#define NID_id_pkix_OCSP_trustRoot 375
+#define OBJ_id_pkix_OCSP_trustRoot 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 11L
+
+#define SN_algorithm "algorithm"
+#define LN_algorithm "algorithm"
+#define NID_algorithm 376
+#define OBJ_algorithm 1L, 3L, 14L, 3L, 2L
+
+#define SN_rsaSignature "rsaSignature"
+#define NID_rsaSignature 377
+#define OBJ_rsaSignature 1L, 3L, 14L, 3L, 2L, 11L
+
+#define SN_X500algorithms "X500algorithms"
+#define LN_X500algorithms "directory services - algorithms"
+#define NID_X500algorithms 378
+#define OBJ_X500algorithms 2L, 5L, 8L
+
+#define SN_org "ORG"
+#define LN_org "org"
+#define NID_org 379
+#define OBJ_org 1L, 3L
+
+#define SN_dod "DOD"
+#define LN_dod "dod"
+#define NID_dod 380
+#define OBJ_dod 1L, 3L, 6L
+
+#define SN_iana "IANA"
+#define LN_iana "iana"
+#define NID_iana 381
+#define OBJ_iana 1L, 3L, 6L, 1L
+
+#define SN_Directory "directory"
+#define LN_Directory "Directory"
+#define NID_Directory 382
+#define OBJ_Directory 1L, 3L, 6L, 1L, 1L
+
+#define SN_Management "mgmt"
+#define LN_Management "Management"
+#define NID_Management 383
+#define OBJ_Management 1L, 3L, 6L, 1L, 2L
+
+#define SN_Experimental "experimental"
+#define LN_Experimental "Experimental"
+#define NID_Experimental 384
+#define OBJ_Experimental 1L, 3L, 6L, 1L, 3L
+
+#define SN_Private "private"
+#define LN_Private "Private"
+#define NID_Private 385
+#define OBJ_Private 1L, 3L, 6L, 1L, 4L
+
+#define SN_Security "security"
+#define LN_Security "Security"
+#define NID_Security 386
+#define OBJ_Security 1L, 3L, 6L, 1L, 5L
+
+#define SN_SNMPv2 "snmpv2"
+#define LN_SNMPv2 "SNMPv2"
+#define NID_SNMPv2 387
+#define OBJ_SNMPv2 1L, 3L, 6L, 1L, 6L
+
+#define LN_Mail "Mail"
+#define NID_Mail 388
+#define OBJ_Mail 1L, 3L, 6L, 1L, 7L
+
+#define SN_Enterprises "enterprises"
+#define LN_Enterprises "Enterprises"
+#define NID_Enterprises 389
+#define OBJ_Enterprises 1L, 3L, 6L, 1L, 4L, 1L
+
+#define SN_dcObject "dcobject"
+#define LN_dcObject "dcObject"
+#define NID_dcObject 390
+#define OBJ_dcObject 1L, 3L, 6L, 1L, 4L, 1L, 1466L, 344L
+
+#define SN_domainComponent "DC"
+#define LN_domainComponent "domainComponent"
+#define NID_domainComponent 391
+#define OBJ_domainComponent 0L, 9L, 2342L, 19200300L, 100L, 1L, 25L
+
+#define SN_Domain "domain"
+#define LN_Domain "Domain"
+#define NID_Domain 392
+#define OBJ_Domain 0L, 9L, 2342L, 19200300L, 100L, 4L, 13L
+
+#define SN_selected_attribute_types "selected-attribute-types"
+#define LN_selected_attribute_types "Selected Attribute Types"
+#define NID_selected_attribute_types 394
+#define OBJ_selected_attribute_types 2L, 5L, 1L, 5L
+
+#define SN_clearance "clearance"
+#define NID_clearance 395
+#define OBJ_clearance 2L, 5L, 1L, 5L, 55L
+
+#define SN_md4WithRSAEncryption "RSA-MD4"
+#define LN_md4WithRSAEncryption "md4WithRSAEncryption"
+#define NID_md4WithRSAEncryption 396
+#define OBJ_md4WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 3L
+
+#define SN_ac_proxying "ac-proxying"
+#define NID_ac_proxying 397
+#define OBJ_ac_proxying 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 10L
+
+#define SN_sinfo_access "subjectInfoAccess"
+#define LN_sinfo_access "Subject Information Access"
+#define NID_sinfo_access 398
+#define OBJ_sinfo_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 11L
+
+#define SN_id_aca_encAttrs "id-aca-encAttrs"
+#define NID_id_aca_encAttrs 399
+#define OBJ_id_aca_encAttrs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 6L
+
+#define SN_role "role"
+#define LN_role "role"
+#define NID_role 400
+#define OBJ_role 2L, 5L, 4L, 72L
+
+#define SN_policy_constraints "policyConstraints"
+#define LN_policy_constraints "X509v3 Policy Constraints"
+#define NID_policy_constraints 401
+#define OBJ_policy_constraints 2L, 5L, 29L, 36L
+
+#define SN_target_information "targetInformation"
+#define LN_target_information "X509v3 AC Targeting"
+#define NID_target_information 402
+#define OBJ_target_information 2L, 5L, 29L, 55L
+
+#define SN_no_rev_avail "noRevAvail"
+#define LN_no_rev_avail "X509v3 No Revocation Available"
+#define NID_no_rev_avail 403
+#define OBJ_no_rev_avail 2L, 5L, 29L, 56L
+
+#define SN_ansi_X9_62 "ansi-X9-62"
+#define LN_ansi_X9_62 "ANSI X9.62"
+#define NID_ansi_X9_62 405
+#define OBJ_ansi_X9_62 1L, 2L, 840L, 10045L
+
+#define SN_X9_62_prime_field "prime-field"
+#define NID_X9_62_prime_field 406
+#define OBJ_X9_62_prime_field 1L, 2L, 840L, 10045L, 1L, 1L
+
+#define SN_X9_62_characteristic_two_field "characteristic-two-field"
+#define NID_X9_62_characteristic_two_field 407
+#define OBJ_X9_62_characteristic_two_field 1L, 2L, 840L, 10045L, 1L, 2L
+
+#define SN_X9_62_id_ecPublicKey "id-ecPublicKey"
+#define NID_X9_62_id_ecPublicKey 408
+#define OBJ_X9_62_id_ecPublicKey 1L, 2L, 840L, 10045L, 2L, 1L
+
+#define SN_X9_62_prime192v1 "prime192v1"
+#define NID_X9_62_prime192v1 409
+#define OBJ_X9_62_prime192v1 1L, 2L, 840L, 10045L, 3L, 1L, 1L
+
+#define SN_X9_62_prime192v2 "prime192v2"
+#define NID_X9_62_prime192v2 410
+#define OBJ_X9_62_prime192v2 1L, 2L, 840L, 10045L, 3L, 1L, 2L
+
+#define SN_X9_62_prime192v3 "prime192v3"
+#define NID_X9_62_prime192v3 411
+#define OBJ_X9_62_prime192v3 1L, 2L, 840L, 10045L, 3L, 1L, 3L
+
+#define SN_X9_62_prime239v1 "prime239v1"
+#define NID_X9_62_prime239v1 412
+#define OBJ_X9_62_prime239v1 1L, 2L, 840L, 10045L, 3L, 1L, 4L
+
+#define SN_X9_62_prime239v2 "prime239v2"
+#define NID_X9_62_prime239v2 413
+#define OBJ_X9_62_prime239v2 1L, 2L, 840L, 10045L, 3L, 1L, 5L
+
+#define SN_X9_62_prime239v3 "prime239v3"
+#define NID_X9_62_prime239v3 414
+#define OBJ_X9_62_prime239v3 1L, 2L, 840L, 10045L, 3L, 1L, 6L
+
+#define SN_X9_62_prime256v1 "prime256v1"
+#define NID_X9_62_prime256v1 415
+#define OBJ_X9_62_prime256v1 1L, 2L, 840L, 10045L, 3L, 1L, 7L
+
+#define SN_ecdsa_with_SHA1 "ecdsa-with-SHA1"
+#define NID_ecdsa_with_SHA1 416
+#define OBJ_ecdsa_with_SHA1 1L, 2L, 840L, 10045L, 4L, 1L
+
+#define SN_ms_csp_name "CSPName"
+#define LN_ms_csp_name "Microsoft CSP Name"
+#define NID_ms_csp_name 417
+#define OBJ_ms_csp_name 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 1L
+
+#define SN_aes_128_ecb "AES-128-ECB"
+#define LN_aes_128_ecb "aes-128-ecb"
+#define NID_aes_128_ecb 418
+#define OBJ_aes_128_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 1L
+
+#define SN_aes_128_cbc "AES-128-CBC"
+#define LN_aes_128_cbc "aes-128-cbc"
+#define NID_aes_128_cbc 419
+#define OBJ_aes_128_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 2L
+
+#define SN_aes_128_ofb128 "AES-128-OFB"
+#define LN_aes_128_ofb128 "aes-128-ofb"
+#define NID_aes_128_ofb128 420
+#define OBJ_aes_128_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 3L
+
+#define SN_aes_128_cfb128 "AES-128-CFB"
+#define LN_aes_128_cfb128 "aes-128-cfb"
+#define NID_aes_128_cfb128 421
+#define OBJ_aes_128_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 4L
+
+#define SN_aes_192_ecb "AES-192-ECB"
+#define LN_aes_192_ecb "aes-192-ecb"
+#define NID_aes_192_ecb 422
+#define OBJ_aes_192_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 21L
+
+#define SN_aes_192_cbc "AES-192-CBC"
+#define LN_aes_192_cbc "aes-192-cbc"
+#define NID_aes_192_cbc 423
+#define OBJ_aes_192_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 22L
+
+#define SN_aes_192_ofb128 "AES-192-OFB"
+#define LN_aes_192_ofb128 "aes-192-ofb"
+#define NID_aes_192_ofb128 424
+#define OBJ_aes_192_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 23L
+
+#define SN_aes_192_cfb128 "AES-192-CFB"
+#define LN_aes_192_cfb128 "aes-192-cfb"
+#define NID_aes_192_cfb128 425
+#define OBJ_aes_192_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 24L
+
+#define SN_aes_256_ecb "AES-256-ECB"
+#define LN_aes_256_ecb "aes-256-ecb"
+#define NID_aes_256_ecb 426
+#define OBJ_aes_256_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 41L
+
+#define SN_aes_256_cbc "AES-256-CBC"
+#define LN_aes_256_cbc "aes-256-cbc"
+#define NID_aes_256_cbc 427
+#define OBJ_aes_256_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 42L
+
+#define SN_aes_256_ofb128 "AES-256-OFB"
+#define LN_aes_256_ofb128 "aes-256-ofb"
+#define NID_aes_256_ofb128 428
+#define OBJ_aes_256_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 43L
+
+#define SN_aes_256_cfb128 "AES-256-CFB"
+#define LN_aes_256_cfb128 "aes-256-cfb"
+#define NID_aes_256_cfb128 429
+#define OBJ_aes_256_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 44L
+
+#define SN_hold_instruction_code "holdInstructionCode"
+#define LN_hold_instruction_code "Hold Instruction Code"
+#define NID_hold_instruction_code 430
+#define OBJ_hold_instruction_code 2L, 5L, 29L, 23L
+
+#define SN_hold_instruction_none "holdInstructionNone"
+#define LN_hold_instruction_none "Hold Instruction None"
+#define NID_hold_instruction_none 431
+#define OBJ_hold_instruction_none 1L, 2L, 840L, 10040L, 2L, 1L
+
+#define SN_hold_instruction_call_issuer "holdInstructionCallIssuer"
+#define LN_hold_instruction_call_issuer "Hold Instruction Call Issuer"
+#define NID_hold_instruction_call_issuer 432
+#define OBJ_hold_instruction_call_issuer 1L, 2L, 840L, 10040L, 2L, 2L
+
+#define SN_hold_instruction_reject "holdInstructionReject"
+#define LN_hold_instruction_reject "Hold Instruction Reject"
+#define NID_hold_instruction_reject 433
+#define OBJ_hold_instruction_reject 1L, 2L, 840L, 10040L, 2L, 3L
+
+#define SN_data "data"
+#define NID_data 434
+#define OBJ_data 0L, 9L
+
+#define SN_pss "pss"
+#define NID_pss 435
+#define OBJ_pss 0L, 9L, 2342L
+
+#define SN_ucl "ucl"
+#define NID_ucl 436
+#define OBJ_ucl 0L, 9L, 2342L, 19200300L
+
+#define SN_pilot "pilot"
+#define NID_pilot 437
+#define OBJ_pilot 0L, 9L, 2342L, 19200300L, 100L
+
+#define LN_pilotAttributeType "pilotAttributeType"
+#define NID_pilotAttributeType 438
+#define OBJ_pilotAttributeType 0L, 9L, 2342L, 19200300L, 100L, 1L
+
+#define LN_pilotAttributeSyntax "pilotAttributeSyntax"
+#define NID_pilotAttributeSyntax 439
+#define OBJ_pilotAttributeSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L
+
+#define LN_pilotObjectClass "pilotObjectClass"
+#define NID_pilotObjectClass 440
+#define OBJ_pilotObjectClass 0L, 9L, 2342L, 19200300L, 100L, 4L
+
+#define LN_pilotGroups "pilotGroups"
+#define NID_pilotGroups 441
+#define OBJ_pilotGroups 0L, 9L, 2342L, 19200300L, 100L, 10L
+
+#define LN_iA5StringSyntax "iA5StringSyntax"
+#define NID_iA5StringSyntax 442
+#define OBJ_iA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 4L
+
+#define LN_caseIgnoreIA5StringSyntax "caseIgnoreIA5StringSyntax"
+#define NID_caseIgnoreIA5StringSyntax 443
+#define OBJ_caseIgnoreIA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 5L
+
+#define LN_pilotObject "pilotObject"
+#define NID_pilotObject 444
+#define OBJ_pilotObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 3L
+
+#define LN_pilotPerson "pilotPerson"
+#define NID_pilotPerson 445
+#define OBJ_pilotPerson 0L, 9L, 2342L, 19200300L, 100L, 4L, 4L
+
+#define SN_account "account"
+#define NID_account 446
+#define OBJ_account 0L, 9L, 2342L, 19200300L, 100L, 4L, 5L
+
+#define SN_document "document"
+#define NID_document 447
+#define OBJ_document 0L, 9L, 2342L, 19200300L, 100L, 4L, 6L
+
+#define SN_room "room"
+#define NID_room 448
+#define OBJ_room 0L, 9L, 2342L, 19200300L, 100L, 4L, 7L
+
+#define LN_documentSeries "documentSeries"
+#define NID_documentSeries 449
+#define OBJ_documentSeries 0L, 9L, 2342L, 19200300L, 100L, 4L, 9L
+
+#define LN_rFC822localPart "rFC822localPart"
+#define NID_rFC822localPart 450
+#define OBJ_rFC822localPart 0L, 9L, 2342L, 19200300L, 100L, 4L, 14L
+
+#define LN_dNSDomain "dNSDomain"
+#define NID_dNSDomain 451
+#define OBJ_dNSDomain 0L, 9L, 2342L, 19200300L, 100L, 4L, 15L
+
+#define LN_domainRelatedObject "domainRelatedObject"
+#define NID_domainRelatedObject 452
+#define OBJ_domainRelatedObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 17L
+
+#define LN_friendlyCountry "friendlyCountry"
+#define NID_friendlyCountry 453
+#define OBJ_friendlyCountry 0L, 9L, 2342L, 19200300L, 100L, 4L, 18L
+
+#define LN_simpleSecurityObject "simpleSecurityObject"
+#define NID_simpleSecurityObject 454
+#define OBJ_simpleSecurityObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 19L
+
+#define LN_pilotOrganization "pilotOrganization"
+#define NID_pilotOrganization 455
+#define OBJ_pilotOrganization 0L, 9L, 2342L, 19200300L, 100L, 4L, 20L
+
+#define LN_pilotDSA "pilotDSA"
+#define NID_pilotDSA 456
+#define OBJ_pilotDSA 0L, 9L, 2342L, 19200300L, 100L, 4L, 21L
+
+#define LN_qualityLabelledData "qualityLabelledData"
+#define NID_qualityLabelledData 457
+#define OBJ_qualityLabelledData 0L, 9L, 2342L, 19200300L, 100L, 4L, 22L
+
+#define SN_userId "UID"
+#define LN_userId "userId"
+#define NID_userId 458
+#define OBJ_userId 0L, 9L, 2342L, 19200300L, 100L, 1L, 1L
+
+#define LN_textEncodedORAddress "textEncodedORAddress"
+#define NID_textEncodedORAddress 459
+#define OBJ_textEncodedORAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 2L
+
+#define SN_rfc822Mailbox "mail"
+#define LN_rfc822Mailbox "rfc822Mailbox"
+#define NID_rfc822Mailbox 460
+#define OBJ_rfc822Mailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 3L
+
+#define SN_info "info"
+#define NID_info 461
+#define OBJ_info 0L, 9L, 2342L, 19200300L, 100L, 1L, 4L
+
+#define LN_favouriteDrink "favouriteDrink"
+#define NID_favouriteDrink 462
+#define OBJ_favouriteDrink 0L, 9L, 2342L, 19200300L, 100L, 1L, 5L
+
+#define LN_roomNumber "roomNumber"
+#define NID_roomNumber 463
+#define OBJ_roomNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 6L
+
+#define SN_photo "photo"
+#define NID_photo 464
+#define OBJ_photo 0L, 9L, 2342L, 19200300L, 100L, 1L, 7L
+
+#define LN_userClass "userClass"
+#define NID_userClass 465
+#define OBJ_userClass 0L, 9L, 2342L, 19200300L, 100L, 1L, 8L
+
+#define SN_host "host"
+#define NID_host 466
+#define OBJ_host 0L, 9L, 2342L, 19200300L, 100L, 1L, 9L
+
+#define SN_manager "manager"
+#define NID_manager 467
+#define OBJ_manager 0L, 9L, 2342L, 19200300L, 100L, 1L, 10L
+
+#define LN_documentIdentifier "documentIdentifier"
+#define NID_documentIdentifier 468
+#define OBJ_documentIdentifier 0L, 9L, 2342L, 19200300L, 100L, 1L, 11L
+
+#define LN_documentTitle "documentTitle"
+#define NID_documentTitle 469
+#define OBJ_documentTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 12L
+
+#define LN_documentVersion "documentVersion"
+#define NID_documentVersion 470
+#define OBJ_documentVersion 0L, 9L, 2342L, 19200300L, 100L, 1L, 13L
+
+#define LN_documentAuthor "documentAuthor"
+#define NID_documentAuthor 471
+#define OBJ_documentAuthor 0L, 9L, 2342L, 19200300L, 100L, 1L, 14L
+
+#define LN_documentLocation "documentLocation"
+#define NID_documentLocation 472
+#define OBJ_documentLocation 0L, 9L, 2342L, 19200300L, 100L, 1L, 15L
+
+#define LN_homeTelephoneNumber "homeTelephoneNumber"
+#define NID_homeTelephoneNumber 473
+#define OBJ_homeTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 20L
+
+#define SN_secretary "secretary"
+#define NID_secretary 474
+#define OBJ_secretary 0L, 9L, 2342L, 19200300L, 100L, 1L, 21L
+
+#define LN_otherMailbox "otherMailbox"
+#define NID_otherMailbox 475
+#define OBJ_otherMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 22L
+
+#define LN_lastModifiedTime "lastModifiedTime"
+#define NID_lastModifiedTime 476
+#define OBJ_lastModifiedTime 0L, 9L, 2342L, 19200300L, 100L, 1L, 23L
+
+#define LN_lastModifiedBy "lastModifiedBy"
+#define NID_lastModifiedBy 477
+#define OBJ_lastModifiedBy 0L, 9L, 2342L, 19200300L, 100L, 1L, 24L
+
+#define LN_aRecord "aRecord"
+#define NID_aRecord 478
+#define OBJ_aRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 26L
+
+#define LN_pilotAttributeType27 "pilotAttributeType27"
+#define NID_pilotAttributeType27 479
+#define OBJ_pilotAttributeType27 0L, 9L, 2342L, 19200300L, 100L, 1L, 27L
+
+#define LN_mXRecord "mXRecord"
+#define NID_mXRecord 480
+#define OBJ_mXRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 28L
+
+#define LN_nSRecord "nSRecord"
+#define NID_nSRecord 481
+#define OBJ_nSRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 29L
+
+#define LN_sOARecord "sOARecord"
+#define NID_sOARecord 482
+#define OBJ_sOARecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 30L
+
+#define LN_cNAMERecord "cNAMERecord"
+#define NID_cNAMERecord 483
+#define OBJ_cNAMERecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 31L
+
+#define LN_associatedDomain "associatedDomain"
+#define NID_associatedDomain 484
+#define OBJ_associatedDomain 0L, 9L, 2342L, 19200300L, 100L, 1L, 37L
+
+#define LN_associatedName "associatedName"
+#define NID_associatedName 485
+#define OBJ_associatedName 0L, 9L, 2342L, 19200300L, 100L, 1L, 38L
+
+#define LN_homePostalAddress "homePostalAddress"
+#define NID_homePostalAddress 486
+#define OBJ_homePostalAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 39L
+
+#define LN_personalTitle "personalTitle"
+#define NID_personalTitle 487
+#define OBJ_personalTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 40L
+
+#define LN_mobileTelephoneNumber "mobileTelephoneNumber"
+#define NID_mobileTelephoneNumber 488
+#define OBJ_mobileTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 41L
+
+#define LN_pagerTelephoneNumber "pagerTelephoneNumber"
+#define NID_pagerTelephoneNumber 489
+#define OBJ_pagerTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 42L
+
+#define LN_friendlyCountryName "friendlyCountryName"
+#define NID_friendlyCountryName 490
+#define OBJ_friendlyCountryName 0L, 9L, 2342L, 19200300L, 100L, 1L, 43L
+
+#define LN_organizationalStatus "organizationalStatus"
+#define NID_organizationalStatus 491
+#define OBJ_organizationalStatus 0L, 9L, 2342L, 19200300L, 100L, 1L, 45L
+
+#define LN_janetMailbox "janetMailbox"
+#define NID_janetMailbox 492
+#define OBJ_janetMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 46L
+
+#define LN_mailPreferenceOption "mailPreferenceOption"
+#define NID_mailPreferenceOption 493
+#define OBJ_mailPreferenceOption 0L, 9L, 2342L, 19200300L, 100L, 1L, 47L
+
+#define LN_buildingName "buildingName"
+#define NID_buildingName 494
+#define OBJ_buildingName 0L, 9L, 2342L, 19200300L, 100L, 1L, 48L
+
+#define LN_dSAQuality "dSAQuality"
+#define NID_dSAQuality 495
+#define OBJ_dSAQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 49L
+
+#define LN_singleLevelQuality "singleLevelQuality"
+#define NID_singleLevelQuality 496
+#define OBJ_singleLevelQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 50L
+
+#define LN_subtreeMinimumQuality "subtreeMinimumQuality"
+#define NID_subtreeMinimumQuality 497
+#define OBJ_subtreeMinimumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 51L
+
+#define LN_subtreeMaximumQuality "subtreeMaximumQuality"
+#define NID_subtreeMaximumQuality 498
+#define OBJ_subtreeMaximumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 52L
+
+#define LN_personalSignature "personalSignature"
+#define NID_personalSignature 499
+#define OBJ_personalSignature 0L, 9L, 2342L, 19200300L, 100L, 1L, 53L
+
+#define LN_dITRedirect "dITRedirect"
+#define NID_dITRedirect 500
+#define OBJ_dITRedirect 0L, 9L, 2342L, 19200300L, 100L, 1L, 54L
+
+#define SN_audio "audio"
+#define NID_audio 501
+#define OBJ_audio 0L, 9L, 2342L, 19200300L, 100L, 1L, 55L
+
+#define LN_documentPublisher "documentPublisher"
+#define NID_documentPublisher 502
+#define OBJ_documentPublisher 0L, 9L, 2342L, 19200300L, 100L, 1L, 56L
+
+#define LN_x500UniqueIdentifier "x500UniqueIdentifier"
+#define NID_x500UniqueIdentifier 503
+#define OBJ_x500UniqueIdentifier 2L, 5L, 4L, 45L
+
+#define SN_mime_mhs "mime-mhs"
+#define LN_mime_mhs "MIME MHS"
+#define NID_mime_mhs 504
+#define OBJ_mime_mhs 1L, 3L, 6L, 1L, 7L, 1L
+
+#define SN_mime_mhs_headings "mime-mhs-headings"
+#define LN_mime_mhs_headings "mime-mhs-headings"
+#define NID_mime_mhs_headings 505
+#define OBJ_mime_mhs_headings 1L, 3L, 6L, 1L, 7L, 1L, 1L
+
+#define SN_mime_mhs_bodies "mime-mhs-bodies"
+#define LN_mime_mhs_bodies "mime-mhs-bodies"
+#define NID_mime_mhs_bodies 506
+#define OBJ_mime_mhs_bodies 1L, 3L, 6L, 1L, 7L, 1L, 2L
+
+#define SN_id_hex_partial_message "id-hex-partial-message"
+#define LN_id_hex_partial_message "id-hex-partial-message"
+#define NID_id_hex_partial_message 507
+#define OBJ_id_hex_partial_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 1L
+
+#define SN_id_hex_multipart_message "id-hex-multipart-message"
+#define LN_id_hex_multipart_message "id-hex-multipart-message"
+#define NID_id_hex_multipart_message 508
+#define OBJ_id_hex_multipart_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 2L
+
+#define LN_generationQualifier "generationQualifier"
+#define NID_generationQualifier 509
+#define OBJ_generationQualifier 2L, 5L, 4L, 44L
+
+#define LN_pseudonym "pseudonym"
+#define NID_pseudonym 510
+#define OBJ_pseudonym 2L, 5L, 4L, 65L
+
+#define SN_id_set "id-set"
+#define LN_id_set "Secure Electronic Transactions"
+#define NID_id_set 512
+#define OBJ_id_set 2L, 23L, 42L
+
+#define SN_set_ctype "set-ctype"
+#define LN_set_ctype "content types"
+#define NID_set_ctype 513
+#define OBJ_set_ctype 2L, 23L, 42L, 0L
+
+#define SN_set_msgExt "set-msgExt"
+#define LN_set_msgExt "message extensions"
+#define NID_set_msgExt 514
+#define OBJ_set_msgExt 2L, 23L, 42L, 1L
+
+#define SN_set_attr "set-attr"
+#define NID_set_attr 515
+#define OBJ_set_attr 2L, 23L, 42L, 3L
+
+#define SN_set_policy "set-policy"
+#define NID_set_policy 516
+#define OBJ_set_policy 2L, 23L, 42L, 5L
+
+#define SN_set_certExt "set-certExt"
+#define LN_set_certExt "certificate extensions"
+#define NID_set_certExt 517
+#define OBJ_set_certExt 2L, 23L, 42L, 7L
+
+#define SN_set_brand "set-brand"
+#define NID_set_brand 518
+#define OBJ_set_brand 2L, 23L, 42L, 8L
+
+#define SN_setct_PANData "setct-PANData"
+#define NID_setct_PANData 519
+#define OBJ_setct_PANData 2L, 23L, 42L, 0L, 0L
+
+#define SN_setct_PANToken "setct-PANToken"
+#define NID_setct_PANToken 520
+#define OBJ_setct_PANToken 2L, 23L, 42L, 0L, 1L
+
+#define SN_setct_PANOnly "setct-PANOnly"
+#define NID_setct_PANOnly 521
+#define OBJ_setct_PANOnly 2L, 23L, 42L, 0L, 2L
+
+#define SN_setct_OIData "setct-OIData"
+#define NID_setct_OIData 522
+#define OBJ_setct_OIData 2L, 23L, 42L, 0L, 3L
+
+#define SN_setct_PI "setct-PI"
+#define NID_setct_PI 523
+#define OBJ_setct_PI 2L, 23L, 42L, 0L, 4L
+
+#define SN_setct_PIData "setct-PIData"
+#define NID_setct_PIData 524
+#define OBJ_setct_PIData 2L, 23L, 42L, 0L, 5L
+
+#define SN_setct_PIDataUnsigned "setct-PIDataUnsigned"
+#define NID_setct_PIDataUnsigned 525
+#define OBJ_setct_PIDataUnsigned 2L, 23L, 42L, 0L, 6L
+
+#define SN_setct_HODInput "setct-HODInput"
+#define NID_setct_HODInput 526
+#define OBJ_setct_HODInput 2L, 23L, 42L, 0L, 7L
+
+#define SN_setct_AuthResBaggage "setct-AuthResBaggage"
+#define NID_setct_AuthResBaggage 527
+#define OBJ_setct_AuthResBaggage 2L, 23L, 42L, 0L, 8L
+
+#define SN_setct_AuthRevReqBaggage "setct-AuthRevReqBaggage"
+#define NID_setct_AuthRevReqBaggage 528
+#define OBJ_setct_AuthRevReqBaggage 2L, 23L, 42L, 0L, 9L
+
+#define SN_setct_AuthRevResBaggage "setct-AuthRevResBaggage"
+#define NID_setct_AuthRevResBaggage 529
+#define OBJ_setct_AuthRevResBaggage 2L, 23L, 42L, 0L, 10L
+
+#define SN_setct_CapTokenSeq "setct-CapTokenSeq"
+#define NID_setct_CapTokenSeq 530
+#define OBJ_setct_CapTokenSeq 2L, 23L, 42L, 0L, 11L
+
+#define SN_setct_PInitResData "setct-PInitResData"
+#define NID_setct_PInitResData 531
+#define OBJ_setct_PInitResData 2L, 23L, 42L, 0L, 12L
+
+#define SN_setct_PI_TBS "setct-PI-TBS"
+#define NID_setct_PI_TBS 532
+#define OBJ_setct_PI_TBS 2L, 23L, 42L, 0L, 13L
+
+#define SN_setct_PResData "setct-PResData"
+#define NID_setct_PResData 533
+#define OBJ_setct_PResData 2L, 23L, 42L, 0L, 14L
+
+#define SN_setct_AuthReqTBS "setct-AuthReqTBS"
+#define NID_setct_AuthReqTBS 534
+#define OBJ_setct_AuthReqTBS 2L, 23L, 42L, 0L, 16L
+
+#define SN_setct_AuthResTBS "setct-AuthResTBS"
+#define NID_setct_AuthResTBS 535
+#define OBJ_setct_AuthResTBS 2L, 23L, 42L, 0L, 17L
+
+#define SN_setct_AuthResTBSX "setct-AuthResTBSX"
+#define NID_setct_AuthResTBSX 536
+#define OBJ_setct_AuthResTBSX 2L, 23L, 42L, 0L, 18L
+
+#define SN_setct_AuthTokenTBS "setct-AuthTokenTBS"
+#define NID_setct_AuthTokenTBS 537
+#define OBJ_setct_AuthTokenTBS 2L, 23L, 42L, 0L, 19L
+
+#define SN_setct_CapTokenData "setct-CapTokenData"
+#define NID_setct_CapTokenData 538
+#define OBJ_setct_CapTokenData 2L, 23L, 42L, 0L, 20L
+
+#define SN_setct_CapTokenTBS "setct-CapTokenTBS"
+#define NID_setct_CapTokenTBS 539
+#define OBJ_setct_CapTokenTBS 2L, 23L, 42L, 0L, 21L
+
+#define SN_setct_AcqCardCodeMsg "setct-AcqCardCodeMsg"
+#define NID_setct_AcqCardCodeMsg 540
+#define OBJ_setct_AcqCardCodeMsg 2L, 23L, 42L, 0L, 22L
+
+#define SN_setct_AuthRevReqTBS "setct-AuthRevReqTBS"
+#define NID_setct_AuthRevReqTBS 541
+#define OBJ_setct_AuthRevReqTBS 2L, 23L, 42L, 0L, 23L
+
+#define SN_setct_AuthRevResData "setct-AuthRevResData"
+#define NID_setct_AuthRevResData 542
+#define OBJ_setct_AuthRevResData 2L, 23L, 42L, 0L, 24L
+
+#define SN_setct_AuthRevResTBS "setct-AuthRevResTBS"
+#define NID_setct_AuthRevResTBS 543
+#define OBJ_setct_AuthRevResTBS 2L, 23L, 42L, 0L, 25L
+
+#define SN_setct_CapReqTBS "setct-CapReqTBS"
+#define NID_setct_CapReqTBS 544
+#define OBJ_setct_CapReqTBS 2L, 23L, 42L, 0L, 26L
+
+#define SN_setct_CapReqTBSX "setct-CapReqTBSX"
+#define NID_setct_CapReqTBSX 545
+#define OBJ_setct_CapReqTBSX 2L, 23L, 42L, 0L, 27L
+
+#define SN_setct_CapResData "setct-CapResData"
+#define NID_setct_CapResData 546
+#define OBJ_setct_CapResData 2L, 23L, 42L, 0L, 28L
+
+#define SN_setct_CapRevReqTBS "setct-CapRevReqTBS"
+#define NID_setct_CapRevReqTBS 547
+#define OBJ_setct_CapRevReqTBS 2L, 23L, 42L, 0L, 29L
+
+#define SN_setct_CapRevReqTBSX "setct-CapRevReqTBSX"
+#define NID_setct_CapRevReqTBSX 548
+#define OBJ_setct_CapRevReqTBSX 2L, 23L, 42L, 0L, 30L
+
+#define SN_setct_CapRevResData "setct-CapRevResData"
+#define NID_setct_CapRevResData 549
+#define OBJ_setct_CapRevResData 2L, 23L, 42L, 0L, 31L
+
+#define SN_setct_CredReqTBS "setct-CredReqTBS"
+#define NID_setct_CredReqTBS 550
+#define OBJ_setct_CredReqTBS 2L, 23L, 42L, 0L, 32L
+
+#define SN_setct_CredReqTBSX "setct-CredReqTBSX"
+#define NID_setct_CredReqTBSX 551
+#define OBJ_setct_CredReqTBSX 2L, 23L, 42L, 0L, 33L
+
+#define SN_setct_CredResData "setct-CredResData"
+#define NID_setct_CredResData 552
+#define OBJ_setct_CredResData 2L, 23L, 42L, 0L, 34L
+
+#define SN_setct_CredRevReqTBS "setct-CredRevReqTBS"
+#define NID_setct_CredRevReqTBS 553
+#define OBJ_setct_CredRevReqTBS 2L, 23L, 42L, 0L, 35L
+
+#define SN_setct_CredRevReqTBSX "setct-CredRevReqTBSX"
+#define NID_setct_CredRevReqTBSX 554
+#define OBJ_setct_CredRevReqTBSX 2L, 23L, 42L, 0L, 36L
+
+#define SN_setct_CredRevResData "setct-CredRevResData"
+#define NID_setct_CredRevResData 555
+#define OBJ_setct_CredRevResData 2L, 23L, 42L, 0L, 37L
+
+#define SN_setct_PCertReqData "setct-PCertReqData"
+#define NID_setct_PCertReqData 556
+#define OBJ_setct_PCertReqData 2L, 23L, 42L, 0L, 38L
+
+#define SN_setct_PCertResTBS "setct-PCertResTBS"
+#define NID_setct_PCertResTBS 557
+#define OBJ_setct_PCertResTBS 2L, 23L, 42L, 0L, 39L
+
+#define SN_setct_BatchAdminReqData "setct-BatchAdminReqData"
+#define NID_setct_BatchAdminReqData 558
+#define OBJ_setct_BatchAdminReqData 2L, 23L, 42L, 0L, 40L
+
+#define SN_setct_BatchAdminResData "setct-BatchAdminResData"
+#define NID_setct_BatchAdminResData 559
+#define OBJ_setct_BatchAdminResData 2L, 23L, 42L, 0L, 41L
+
+#define SN_setct_CardCInitResTBS "setct-CardCInitResTBS"
+#define NID_setct_CardCInitResTBS 560
+#define OBJ_setct_CardCInitResTBS 2L, 23L, 42L, 0L, 42L
+
+#define SN_setct_MeAqCInitResTBS "setct-MeAqCInitResTBS"
+#define NID_setct_MeAqCInitResTBS 561
+#define OBJ_setct_MeAqCInitResTBS 2L, 23L, 42L, 0L, 43L
+
+#define SN_setct_RegFormResTBS "setct-RegFormResTBS"
+#define NID_setct_RegFormResTBS 562
+#define OBJ_setct_RegFormResTBS 2L, 23L, 42L, 0L, 44L
+
+#define SN_setct_CertReqData "setct-CertReqData"
+#define NID_setct_CertReqData 563
+#define OBJ_setct_CertReqData 2L, 23L, 42L, 0L, 45L
+
+#define SN_setct_CertReqTBS "setct-CertReqTBS"
+#define NID_setct_CertReqTBS 564
+#define OBJ_setct_CertReqTBS 2L, 23L, 42L, 0L, 46L
+
+#define SN_setct_CertResData "setct-CertResData"
+#define NID_setct_CertResData 565
+#define OBJ_setct_CertResData 2L, 23L, 42L, 0L, 47L
+
+#define SN_setct_CertInqReqTBS "setct-CertInqReqTBS"
+#define NID_setct_CertInqReqTBS 566
+#define OBJ_setct_CertInqReqTBS 2L, 23L, 42L, 0L, 48L
+
+#define SN_setct_ErrorTBS "setct-ErrorTBS"
+#define NID_setct_ErrorTBS 567
+#define OBJ_setct_ErrorTBS 2L, 23L, 42L, 0L, 49L
+
+#define SN_setct_PIDualSignedTBE "setct-PIDualSignedTBE"
+#define NID_setct_PIDualSignedTBE 568
+#define OBJ_setct_PIDualSignedTBE 2L, 23L, 42L, 0L, 50L
+
+#define SN_setct_PIUnsignedTBE "setct-PIUnsignedTBE"
+#define NID_setct_PIUnsignedTBE 569
+#define OBJ_setct_PIUnsignedTBE 2L, 23L, 42L, 0L, 51L
+
+#define SN_setct_AuthReqTBE "setct-AuthReqTBE"
+#define NID_setct_AuthReqTBE 570
+#define OBJ_setct_AuthReqTBE 2L, 23L, 42L, 0L, 52L
+
+#define SN_setct_AuthResTBE "setct-AuthResTBE"
+#define NID_setct_AuthResTBE 571
+#define OBJ_setct_AuthResTBE 2L, 23L, 42L, 0L, 53L
+
+#define SN_setct_AuthResTBEX "setct-AuthResTBEX"
+#define NID_setct_AuthResTBEX 572
+#define OBJ_setct_AuthResTBEX 2L, 23L, 42L, 0L, 54L
+
+#define SN_setct_AuthTokenTBE "setct-AuthTokenTBE"
+#define NID_setct_AuthTokenTBE 573
+#define OBJ_setct_AuthTokenTBE 2L, 23L, 42L, 0L, 55L
+
+#define SN_setct_CapTokenTBE "setct-CapTokenTBE"
+#define NID_setct_CapTokenTBE 574
+#define OBJ_setct_CapTokenTBE 2L, 23L, 42L, 0L, 56L
+
+#define SN_setct_CapTokenTBEX "setct-CapTokenTBEX"
+#define NID_setct_CapTokenTBEX 575
+#define OBJ_setct_CapTokenTBEX 2L, 23L, 42L, 0L, 57L
+
+#define SN_setct_AcqCardCodeMsgTBE "setct-AcqCardCodeMsgTBE"
+#define NID_setct_AcqCardCodeMsgTBE 576
+#define OBJ_setct_AcqCardCodeMsgTBE 2L, 23L, 42L, 0L, 58L
+
+#define SN_setct_AuthRevReqTBE "setct-AuthRevReqTBE"
+#define NID_setct_AuthRevReqTBE 577
+#define OBJ_setct_AuthRevReqTBE 2L, 23L, 42L, 0L, 59L
+
+#define SN_setct_AuthRevResTBE "setct-AuthRevResTBE"
+#define NID_setct_AuthRevResTBE 578
+#define OBJ_setct_AuthRevResTBE 2L, 23L, 42L, 0L, 60L
+
+#define SN_setct_AuthRevResTBEB "setct-AuthRevResTBEB"
+#define NID_setct_AuthRevResTBEB 579
+#define OBJ_setct_AuthRevResTBEB 2L, 23L, 42L, 0L, 61L
+
+#define SN_setct_CapReqTBE "setct-CapReqTBE"
+#define NID_setct_CapReqTBE 580
+#define OBJ_setct_CapReqTBE 2L, 23L, 42L, 0L, 62L
+
+#define SN_setct_CapReqTBEX "setct-CapReqTBEX"
+#define NID_setct_CapReqTBEX 581
+#define OBJ_setct_CapReqTBEX 2L, 23L, 42L, 0L, 63L
+
+#define SN_setct_CapResTBE "setct-CapResTBE"
+#define NID_setct_CapResTBE 582
+#define OBJ_setct_CapResTBE 2L, 23L, 42L, 0L, 64L
+
+#define SN_setct_CapRevReqTBE "setct-CapRevReqTBE"
+#define NID_setct_CapRevReqTBE 583
+#define OBJ_setct_CapRevReqTBE 2L, 23L, 42L, 0L, 65L
+
+#define SN_setct_CapRevReqTBEX "setct-CapRevReqTBEX"
+#define NID_setct_CapRevReqTBEX 584
+#define OBJ_setct_CapRevReqTBEX 2L, 23L, 42L, 0L, 66L
+
+#define SN_setct_CapRevResTBE "setct-CapRevResTBE"
+#define NID_setct_CapRevResTBE 585
+#define OBJ_setct_CapRevResTBE 2L, 23L, 42L, 0L, 67L
+
+#define SN_setct_CredReqTBE "setct-CredReqTBE"
+#define NID_setct_CredReqTBE 586
+#define OBJ_setct_CredReqTBE 2L, 23L, 42L, 0L, 68L
+
+#define SN_setct_CredReqTBEX "setct-CredReqTBEX"
+#define NID_setct_CredReqTBEX 587
+#define OBJ_setct_CredReqTBEX 2L, 23L, 42L, 0L, 69L
+
+#define SN_setct_CredResTBE "setct-CredResTBE"
+#define NID_setct_CredResTBE 588
+#define OBJ_setct_CredResTBE 2L, 23L, 42L, 0L, 70L
+
+#define SN_setct_CredRevReqTBE "setct-CredRevReqTBE"
+#define NID_setct_CredRevReqTBE 589
+#define OBJ_setct_CredRevReqTBE 2L, 23L, 42L, 0L, 71L
+
+#define SN_setct_CredRevReqTBEX "setct-CredRevReqTBEX"
+#define NID_setct_CredRevReqTBEX 590
+#define OBJ_setct_CredRevReqTBEX 2L, 23L, 42L, 0L, 72L
+
+#define SN_setct_CredRevResTBE "setct-CredRevResTBE"
+#define NID_setct_CredRevResTBE 591
+#define OBJ_setct_CredRevResTBE 2L, 23L, 42L, 0L, 73L
+
+#define SN_setct_BatchAdminReqTBE "setct-BatchAdminReqTBE"
+#define NID_setct_BatchAdminReqTBE 592
+#define OBJ_setct_BatchAdminReqTBE 2L, 23L, 42L, 0L, 74L
+
+#define SN_setct_BatchAdminResTBE "setct-BatchAdminResTBE"
+#define NID_setct_BatchAdminResTBE 593
+#define OBJ_setct_BatchAdminResTBE 2L, 23L, 42L, 0L, 75L
+
+#define SN_setct_RegFormReqTBE "setct-RegFormReqTBE"
+#define NID_setct_RegFormReqTBE 594
+#define OBJ_setct_RegFormReqTBE 2L, 23L, 42L, 0L, 76L
+
+#define SN_setct_CertReqTBE "setct-CertReqTBE"
+#define NID_setct_CertReqTBE 595
+#define OBJ_setct_CertReqTBE 2L, 23L, 42L, 0L, 77L
+
+#define SN_setct_CertReqTBEX "setct-CertReqTBEX"
+#define NID_setct_CertReqTBEX 596
+#define OBJ_setct_CertReqTBEX 2L, 23L, 42L, 0L, 78L
+
+#define SN_setct_CertResTBE "setct-CertResTBE"
+#define NID_setct_CertResTBE 597
+#define OBJ_setct_CertResTBE 2L, 23L, 42L, 0L, 79L
+
+#define SN_setct_CRLNotificationTBS "setct-CRLNotificationTBS"
+#define NID_setct_CRLNotificationTBS 598
+#define OBJ_setct_CRLNotificationTBS 2L, 23L, 42L, 0L, 80L
+
+#define SN_setct_CRLNotificationResTBS "setct-CRLNotificationResTBS"
+#define NID_setct_CRLNotificationResTBS 599
+#define OBJ_setct_CRLNotificationResTBS 2L, 23L, 42L, 0L, 81L
+
+#define SN_setct_BCIDistributionTBS "setct-BCIDistributionTBS"
+#define NID_setct_BCIDistributionTBS 600
+#define OBJ_setct_BCIDistributionTBS 2L, 23L, 42L, 0L, 82L
+
+#define SN_setext_genCrypt "setext-genCrypt"
+#define LN_setext_genCrypt "generic cryptogram"
+#define NID_setext_genCrypt 601
+#define OBJ_setext_genCrypt 2L, 23L, 42L, 1L, 1L
+
+#define SN_setext_miAuth "setext-miAuth"
+#define LN_setext_miAuth "merchant initiated auth"
+#define NID_setext_miAuth 602
+#define OBJ_setext_miAuth 2L, 23L, 42L, 1L, 3L
+
+#define SN_setext_pinSecure "setext-pinSecure"
+#define NID_setext_pinSecure 603
+#define OBJ_setext_pinSecure 2L, 23L, 42L, 1L, 4L
+
+#define SN_setext_pinAny "setext-pinAny"
+#define NID_setext_pinAny 604
+#define OBJ_setext_pinAny 2L, 23L, 42L, 1L, 5L
+
+#define SN_setext_track2 "setext-track2"
+#define NID_setext_track2 605
+#define OBJ_setext_track2 2L, 23L, 42L, 1L, 7L
+
+#define SN_setext_cv "setext-cv"
+#define LN_setext_cv "additional verification"
+#define NID_setext_cv 606
+#define OBJ_setext_cv 2L, 23L, 42L, 1L, 8L
+
+#define SN_set_policy_root "set-policy-root"
+#define NID_set_policy_root 607
+#define OBJ_set_policy_root 2L, 23L, 42L, 5L, 0L
+
+#define SN_setCext_hashedRoot "setCext-hashedRoot"
+#define NID_setCext_hashedRoot 608
+#define OBJ_setCext_hashedRoot 2L, 23L, 42L, 7L, 0L
+
+#define SN_setCext_certType "setCext-certType"
+#define NID_setCext_certType 609
+#define OBJ_setCext_certType 2L, 23L, 42L, 7L, 1L
+
+#define SN_setCext_merchData "setCext-merchData"
+#define NID_setCext_merchData 610
+#define OBJ_setCext_merchData 2L, 23L, 42L, 7L, 2L
+
+#define SN_setCext_cCertRequired "setCext-cCertRequired"
+#define NID_setCext_cCertRequired 611
+#define OBJ_setCext_cCertRequired 2L, 23L, 42L, 7L, 3L
+
+#define SN_setCext_tunneling "setCext-tunneling"
+#define NID_setCext_tunneling 612
+#define OBJ_setCext_tunneling 2L, 23L, 42L, 7L, 4L
+
+#define SN_setCext_setExt "setCext-setExt"
+#define NID_setCext_setExt 613
+#define OBJ_setCext_setExt 2L, 23L, 42L, 7L, 5L
+
+#define SN_setCext_setQualf "setCext-setQualf"
+#define NID_setCext_setQualf 614
+#define OBJ_setCext_setQualf 2L, 23L, 42L, 7L, 6L
+
+#define SN_setCext_PGWYcapabilities "setCext-PGWYcapabilities"
+#define NID_setCext_PGWYcapabilities 615
+#define OBJ_setCext_PGWYcapabilities 2L, 23L, 42L, 7L, 7L
+
+#define SN_setCext_TokenIdentifier "setCext-TokenIdentifier"
+#define NID_setCext_TokenIdentifier 616
+#define OBJ_setCext_TokenIdentifier 2L, 23L, 42L, 7L, 8L
+
+#define SN_setCext_Track2Data "setCext-Track2Data"
+#define NID_setCext_Track2Data 617
+#define OBJ_setCext_Track2Data 2L, 23L, 42L, 7L, 9L
+
+#define SN_setCext_TokenType "setCext-TokenType"
+#define NID_setCext_TokenType 618
+#define OBJ_setCext_TokenType 2L, 23L, 42L, 7L, 10L
+
+#define SN_setCext_IssuerCapabilities "setCext-IssuerCapabilities"
+#define NID_setCext_IssuerCapabilities 619
+#define OBJ_setCext_IssuerCapabilities 2L, 23L, 42L, 7L, 11L
+
+#define SN_setAttr_Cert "setAttr-Cert"
+#define NID_setAttr_Cert 620
+#define OBJ_setAttr_Cert 2L, 23L, 42L, 3L, 0L
+
+#define SN_setAttr_PGWYcap "setAttr-PGWYcap"
+#define LN_setAttr_PGWYcap "payment gateway capabilities"
+#define NID_setAttr_PGWYcap 621
+#define OBJ_setAttr_PGWYcap 2L, 23L, 42L, 3L, 1L
+
+#define SN_setAttr_TokenType "setAttr-TokenType"
+#define NID_setAttr_TokenType 622
+#define OBJ_setAttr_TokenType 2L, 23L, 42L, 3L, 2L
+
+#define SN_setAttr_IssCap "setAttr-IssCap"
+#define LN_setAttr_IssCap "issuer capabilities"
+#define NID_setAttr_IssCap 623
+#define OBJ_setAttr_IssCap 2L, 23L, 42L, 3L, 3L
+
+#define SN_set_rootKeyThumb "set-rootKeyThumb"
+#define NID_set_rootKeyThumb 624
+#define OBJ_set_rootKeyThumb 2L, 23L, 42L, 3L, 0L, 0L
+
+#define SN_set_addPolicy "set-addPolicy"
+#define NID_set_addPolicy 625
+#define OBJ_set_addPolicy 2L, 23L, 42L, 3L, 0L, 1L
+
+#define SN_setAttr_Token_EMV "setAttr-Token-EMV"
+#define NID_setAttr_Token_EMV 626
+#define OBJ_setAttr_Token_EMV 2L, 23L, 42L, 3L, 2L, 1L
+
+#define SN_setAttr_Token_B0Prime "setAttr-Token-B0Prime"
+#define NID_setAttr_Token_B0Prime 627
+#define OBJ_setAttr_Token_B0Prime 2L, 23L, 42L, 3L, 2L, 2L
+
+#define SN_setAttr_IssCap_CVM "setAttr-IssCap-CVM"
+#define NID_setAttr_IssCap_CVM 628
+#define OBJ_setAttr_IssCap_CVM 2L, 23L, 42L, 3L, 3L, 3L
+
+#define SN_setAttr_IssCap_T2 "setAttr-IssCap-T2"
+#define NID_setAttr_IssCap_T2 629
+#define OBJ_setAttr_IssCap_T2 2L, 23L, 42L, 3L, 3L, 4L
+
+#define SN_setAttr_IssCap_Sig "setAttr-IssCap-Sig"
+#define NID_setAttr_IssCap_Sig 630
+#define OBJ_setAttr_IssCap_Sig 2L, 23L, 42L, 3L, 3L, 5L
+
+#define SN_setAttr_GenCryptgrm "setAttr-GenCryptgrm"
+#define LN_setAttr_GenCryptgrm "generate cryptogram"
+#define NID_setAttr_GenCryptgrm 631
+#define OBJ_setAttr_GenCryptgrm 2L, 23L, 42L, 3L, 3L, 3L, 1L
+
+#define SN_setAttr_T2Enc "setAttr-T2Enc"
+#define LN_setAttr_T2Enc "encrypted track 2"
+#define NID_setAttr_T2Enc 632
+#define OBJ_setAttr_T2Enc 2L, 23L, 42L, 3L, 3L, 4L, 1L
+
+#define SN_setAttr_T2cleartxt "setAttr-T2cleartxt"
+#define LN_setAttr_T2cleartxt "cleartext track 2"
+#define NID_setAttr_T2cleartxt 633
+#define OBJ_setAttr_T2cleartxt 2L, 23L, 42L, 3L, 3L, 4L, 2L
+
+#define SN_setAttr_TokICCsig "setAttr-TokICCsig"
+#define LN_setAttr_TokICCsig "ICC or token signature"
+#define NID_setAttr_TokICCsig 634
+#define OBJ_setAttr_TokICCsig 2L, 23L, 42L, 3L, 3L, 5L, 1L
+
+#define SN_setAttr_SecDevSig "setAttr-SecDevSig"
+#define LN_setAttr_SecDevSig "secure device signature"
+#define NID_setAttr_SecDevSig 635
+#define OBJ_setAttr_SecDevSig 2L, 23L, 42L, 3L, 3L, 5L, 2L
+
+#define SN_set_brand_IATA_ATA "set-brand-IATA-ATA"
+#define NID_set_brand_IATA_ATA 636
+#define OBJ_set_brand_IATA_ATA 2L, 23L, 42L, 8L, 1L
+
+#define SN_set_brand_Diners "set-brand-Diners"
+#define NID_set_brand_Diners 637
+#define OBJ_set_brand_Diners 2L, 23L, 42L, 8L, 30L
+
+#define SN_set_brand_AmericanExpress "set-brand-AmericanExpress"
+#define NID_set_brand_AmericanExpress 638
+#define OBJ_set_brand_AmericanExpress 2L, 23L, 42L, 8L, 34L
+
+#define SN_set_brand_JCB "set-brand-JCB"
+#define NID_set_brand_JCB 639
+#define OBJ_set_brand_JCB 2L, 23L, 42L, 8L, 35L
+
+#define SN_set_brand_Visa "set-brand-Visa"
+#define NID_set_brand_Visa 640
+#define OBJ_set_brand_Visa 2L, 23L, 42L, 8L, 4L
+
+#define SN_set_brand_MasterCard "set-brand-MasterCard"
+#define NID_set_brand_MasterCard 641
+#define OBJ_set_brand_MasterCard 2L, 23L, 42L, 8L, 5L
+
+#define SN_set_brand_Novus "set-brand-Novus"
+#define NID_set_brand_Novus 642
+#define OBJ_set_brand_Novus 2L, 23L, 42L, 8L, 6011L
+
+#define SN_des_cdmf "DES-CDMF"
+#define LN_des_cdmf "des-cdmf"
+#define NID_des_cdmf 643
+#define OBJ_des_cdmf 1L, 2L, 840L, 113549L, 3L, 10L
+
+#define SN_rsaOAEPEncryptionSET "rsaOAEPEncryptionSET"
+#define NID_rsaOAEPEncryptionSET 644
+#define OBJ_rsaOAEPEncryptionSET 1L, 2L, 840L, 113549L, 1L, 1L, 6L
+
+#define SN_itu_t "ITU-T"
+#define LN_itu_t "itu-t"
+#define NID_itu_t 645
+#define OBJ_itu_t 0L
+
+#define SN_joint_iso_itu_t "JOINT-ISO-ITU-T"
+#define LN_joint_iso_itu_t "joint-iso-itu-t"
+#define NID_joint_iso_itu_t 646
+#define OBJ_joint_iso_itu_t 2L
+
+#define SN_international_organizations "international-organizations"
+#define LN_international_organizations "International Organizations"
+#define NID_international_organizations 647
+#define OBJ_international_organizations 2L, 23L
+
+#define SN_ms_smartcard_login "msSmartcardLogin"
+#define LN_ms_smartcard_login "Microsoft Smartcardlogin"
+#define NID_ms_smartcard_login 648
+#define OBJ_ms_smartcard_login 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 2L
+
+#define SN_ms_upn "msUPN"
+#define LN_ms_upn "Microsoft Universal Principal Name"
+#define NID_ms_upn 649
+#define OBJ_ms_upn 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 3L
+
+#define SN_aes_128_cfb1 "AES-128-CFB1"
+#define LN_aes_128_cfb1 "aes-128-cfb1"
+#define NID_aes_128_cfb1 650
+
+#define SN_aes_192_cfb1 "AES-192-CFB1"
+#define LN_aes_192_cfb1 "aes-192-cfb1"
+#define NID_aes_192_cfb1 651
+
+#define SN_aes_256_cfb1 "AES-256-CFB1"
+#define LN_aes_256_cfb1 "aes-256-cfb1"
+#define NID_aes_256_cfb1 652
+
+#define SN_aes_128_cfb8 "AES-128-CFB8"
+#define LN_aes_128_cfb8 "aes-128-cfb8"
+#define NID_aes_128_cfb8 653
+
+#define SN_aes_192_cfb8 "AES-192-CFB8"
+#define LN_aes_192_cfb8 "aes-192-cfb8"
+#define NID_aes_192_cfb8 654
+
+#define SN_aes_256_cfb8 "AES-256-CFB8"
+#define LN_aes_256_cfb8 "aes-256-cfb8"
+#define NID_aes_256_cfb8 655
+
+#define SN_des_cfb1 "DES-CFB1"
+#define LN_des_cfb1 "des-cfb1"
+#define NID_des_cfb1 656
+
+#define SN_des_cfb8 "DES-CFB8"
+#define LN_des_cfb8 "des-cfb8"
+#define NID_des_cfb8 657
+
+#define SN_des_ede3_cfb1 "DES-EDE3-CFB1"
+#define LN_des_ede3_cfb1 "des-ede3-cfb1"
+#define NID_des_ede3_cfb1 658
+
+#define SN_des_ede3_cfb8 "DES-EDE3-CFB8"
+#define LN_des_ede3_cfb8 "des-ede3-cfb8"
+#define NID_des_ede3_cfb8 659
+
+#define SN_streetAddress "street"
+#define LN_streetAddress "streetAddress"
+#define NID_streetAddress 660
+#define OBJ_streetAddress 2L, 5L, 4L, 9L
+
+#define LN_postalCode "postalCode"
+#define NID_postalCode 661
+#define OBJ_postalCode 2L, 5L, 4L, 17L
+
+#define SN_id_ppl "id-ppl"
+#define NID_id_ppl 662
+#define OBJ_id_ppl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L
+
+#define SN_proxyCertInfo "proxyCertInfo"
+#define LN_proxyCertInfo "Proxy Certificate Information"
+#define NID_proxyCertInfo 663
+#define OBJ_proxyCertInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 14L
+
+#define SN_id_ppl_anyLanguage "id-ppl-anyLanguage"
+#define LN_id_ppl_anyLanguage "Any language"
+#define NID_id_ppl_anyLanguage 664
+#define OBJ_id_ppl_anyLanguage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 0L
+
+#define SN_id_ppl_inheritAll "id-ppl-inheritAll"
+#define LN_id_ppl_inheritAll "Inherit all"
+#define NID_id_ppl_inheritAll 665
+#define OBJ_id_ppl_inheritAll 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 1L
+
+#define SN_name_constraints "nameConstraints"
+#define LN_name_constraints "X509v3 Name Constraints"
+#define NID_name_constraints 666
+#define OBJ_name_constraints 2L, 5L, 29L, 30L
+
+#define SN_Independent "id-ppl-independent"
+#define LN_Independent "Independent"
+#define NID_Independent 667
+#define OBJ_Independent 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 2L
+
+#define SN_sha256WithRSAEncryption "RSA-SHA256"
+#define LN_sha256WithRSAEncryption "sha256WithRSAEncryption"
+#define NID_sha256WithRSAEncryption 668
+#define OBJ_sha256WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 11L
+
+#define SN_sha384WithRSAEncryption "RSA-SHA384"
+#define LN_sha384WithRSAEncryption "sha384WithRSAEncryption"
+#define NID_sha384WithRSAEncryption 669
+#define OBJ_sha384WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 12L
+
+#define SN_sha512WithRSAEncryption "RSA-SHA512"
+#define LN_sha512WithRSAEncryption "sha512WithRSAEncryption"
+#define NID_sha512WithRSAEncryption 670
+#define OBJ_sha512WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 13L
+
+#define SN_sha224WithRSAEncryption "RSA-SHA224"
+#define LN_sha224WithRSAEncryption "sha224WithRSAEncryption"
+#define NID_sha224WithRSAEncryption 671
+#define OBJ_sha224WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 14L
+
+#define SN_sha256 "SHA256"
+#define LN_sha256 "sha256"
+#define NID_sha256 672
+#define OBJ_sha256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 1L
+
+#define SN_sha384 "SHA384"
+#define LN_sha384 "sha384"
+#define NID_sha384 673
+#define OBJ_sha384 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 2L
+
+#define SN_sha512 "SHA512"
+#define LN_sha512 "sha512"
+#define NID_sha512 674
+#define OBJ_sha512 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 3L
+
+#define SN_sha224 "SHA224"
+#define LN_sha224 "sha224"
+#define NID_sha224 675
+#define OBJ_sha224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 4L
+
+#define SN_identified_organization "identified-organization"
+#define NID_identified_organization 676
+#define OBJ_identified_organization 1L, 3L
+
+#define SN_certicom_arc "certicom-arc"
+#define NID_certicom_arc 677
+#define OBJ_certicom_arc 1L, 3L, 132L
+
+#define SN_wap "wap"
+#define NID_wap 678
+#define OBJ_wap 2L, 23L, 43L
+
+#define SN_wap_wsg "wap-wsg"
+#define NID_wap_wsg 679
+#define OBJ_wap_wsg 2L, 23L, 43L, 1L
+
+#define SN_X9_62_id_characteristic_two_basis "id-characteristic-two-basis"
+#define NID_X9_62_id_characteristic_two_basis 680
+#define OBJ_X9_62_id_characteristic_two_basis 1L, 2L, 840L, 10045L, 1L, 2L, 3L
+
+#define SN_X9_62_onBasis "onBasis"
+#define NID_X9_62_onBasis 681
+#define OBJ_X9_62_onBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 1L
+
+#define SN_X9_62_tpBasis "tpBasis"
+#define NID_X9_62_tpBasis 682
+#define OBJ_X9_62_tpBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 2L
+
+#define SN_X9_62_ppBasis "ppBasis"
+#define NID_X9_62_ppBasis 683
+#define OBJ_X9_62_ppBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 3L
+
+#define SN_X9_62_c2pnb163v1 "c2pnb163v1"
+#define NID_X9_62_c2pnb163v1 684
+#define OBJ_X9_62_c2pnb163v1 1L, 2L, 840L, 10045L, 3L, 0L, 1L
+
+#define SN_X9_62_c2pnb163v2 "c2pnb163v2"
+#define NID_X9_62_c2pnb163v2 685
+#define OBJ_X9_62_c2pnb163v2 1L, 2L, 840L, 10045L, 3L, 0L, 2L
+
+#define SN_X9_62_c2pnb163v3 "c2pnb163v3"
+#define NID_X9_62_c2pnb163v3 686
+#define OBJ_X9_62_c2pnb163v3 1L, 2L, 840L, 10045L, 3L, 0L, 3L
+
+#define SN_X9_62_c2pnb176v1 "c2pnb176v1"
+#define NID_X9_62_c2pnb176v1 687
+#define OBJ_X9_62_c2pnb176v1 1L, 2L, 840L, 10045L, 3L, 0L, 4L
+
+#define SN_X9_62_c2tnb191v1 "c2tnb191v1"
+#define NID_X9_62_c2tnb191v1 688
+#define OBJ_X9_62_c2tnb191v1 1L, 2L, 840L, 10045L, 3L, 0L, 5L
+
+#define SN_X9_62_c2tnb191v2 "c2tnb191v2"
+#define NID_X9_62_c2tnb191v2 689
+#define OBJ_X9_62_c2tnb191v2 1L, 2L, 840L, 10045L, 3L, 0L, 6L
+
+#define SN_X9_62_c2tnb191v3 "c2tnb191v3"
+#define NID_X9_62_c2tnb191v3 690
+#define OBJ_X9_62_c2tnb191v3 1L, 2L, 840L, 10045L, 3L, 0L, 7L
+
+#define SN_X9_62_c2onb191v4 "c2onb191v4"
+#define NID_X9_62_c2onb191v4 691
+#define OBJ_X9_62_c2onb191v4 1L, 2L, 840L, 10045L, 3L, 0L, 8L
+
+#define SN_X9_62_c2onb191v5 "c2onb191v5"
+#define NID_X9_62_c2onb191v5 692
+#define OBJ_X9_62_c2onb191v5 1L, 2L, 840L, 10045L, 3L, 0L, 9L
+
+#define SN_X9_62_c2pnb208w1 "c2pnb208w1"
+#define NID_X9_62_c2pnb208w1 693
+#define OBJ_X9_62_c2pnb208w1 1L, 2L, 840L, 10045L, 3L, 0L, 10L
+
+#define SN_X9_62_c2tnb239v1 "c2tnb239v1"
+#define NID_X9_62_c2tnb239v1 694
+#define OBJ_X9_62_c2tnb239v1 1L, 2L, 840L, 10045L, 3L, 0L, 11L
+
+#define SN_X9_62_c2tnb239v2 "c2tnb239v2"
+#define NID_X9_62_c2tnb239v2 695
+#define OBJ_X9_62_c2tnb239v2 1L, 2L, 840L, 10045L, 3L, 0L, 12L
+
+#define SN_X9_62_c2tnb239v3 "c2tnb239v3"
+#define NID_X9_62_c2tnb239v3 696
+#define OBJ_X9_62_c2tnb239v3 1L, 2L, 840L, 10045L, 3L, 0L, 13L
+
+#define SN_X9_62_c2onb239v4 "c2onb239v4"
+#define NID_X9_62_c2onb239v4 697
+#define OBJ_X9_62_c2onb239v4 1L, 2L, 840L, 10045L, 3L, 0L, 14L
+
+#define SN_X9_62_c2onb239v5 "c2onb239v5"
+#define NID_X9_62_c2onb239v5 698
+#define OBJ_X9_62_c2onb239v5 1L, 2L, 840L, 10045L, 3L, 0L, 15L
+
+#define SN_X9_62_c2pnb272w1 "c2pnb272w1"
+#define NID_X9_62_c2pnb272w1 699
+#define OBJ_X9_62_c2pnb272w1 1L, 2L, 840L, 10045L, 3L, 0L, 16L
+
+#define SN_X9_62_c2pnb304w1 "c2pnb304w1"
+#define NID_X9_62_c2pnb304w1 700
+#define OBJ_X9_62_c2pnb304w1 1L, 2L, 840L, 10045L, 3L, 0L, 17L
+
+#define SN_X9_62_c2tnb359v1 "c2tnb359v1"
+#define NID_X9_62_c2tnb359v1 701
+#define OBJ_X9_62_c2tnb359v1 1L, 2L, 840L, 10045L, 3L, 0L, 18L
+
+#define SN_X9_62_c2pnb368w1 "c2pnb368w1"
+#define NID_X9_62_c2pnb368w1 702
+#define OBJ_X9_62_c2pnb368w1 1L, 2L, 840L, 10045L, 3L, 0L, 19L
+
+#define SN_X9_62_c2tnb431r1 "c2tnb431r1"
+#define NID_X9_62_c2tnb431r1 703
+#define OBJ_X9_62_c2tnb431r1 1L, 2L, 840L, 10045L, 3L, 0L, 20L
+
+#define SN_secp112r1 "secp112r1"
+#define NID_secp112r1 704
+#define OBJ_secp112r1 1L, 3L, 132L, 0L, 6L
+
+#define SN_secp112r2 "secp112r2"
+#define NID_secp112r2 705
+#define OBJ_secp112r2 1L, 3L, 132L, 0L, 7L
+
+#define SN_secp128r1 "secp128r1"
+#define NID_secp128r1 706
+#define OBJ_secp128r1 1L, 3L, 132L, 0L, 28L
+
+#define SN_secp128r2 "secp128r2"
+#define NID_secp128r2 707
+#define OBJ_secp128r2 1L, 3L, 132L, 0L, 29L
+
+#define SN_secp160k1 "secp160k1"
+#define NID_secp160k1 708
+#define OBJ_secp160k1 1L, 3L, 132L, 0L, 9L
+
+#define SN_secp160r1 "secp160r1"
+#define NID_secp160r1 709
+#define OBJ_secp160r1 1L, 3L, 132L, 0L, 8L
+
+#define SN_secp160r2 "secp160r2"
+#define NID_secp160r2 710
+#define OBJ_secp160r2 1L, 3L, 132L, 0L, 30L
+
+#define SN_secp192k1 "secp192k1"
+#define NID_secp192k1 711
+#define OBJ_secp192k1 1L, 3L, 132L, 0L, 31L
+
+#define SN_secp224k1 "secp224k1"
+#define NID_secp224k1 712
+#define OBJ_secp224k1 1L, 3L, 132L, 0L, 32L
+
+#define SN_secp224r1 "secp224r1"
+#define NID_secp224r1 713
+#define OBJ_secp224r1 1L, 3L, 132L, 0L, 33L
+
+#define SN_secp256k1 "secp256k1"
+#define NID_secp256k1 714
+#define OBJ_secp256k1 1L, 3L, 132L, 0L, 10L
+
+#define SN_secp384r1 "secp384r1"
+#define NID_secp384r1 715
+#define OBJ_secp384r1 1L, 3L, 132L, 0L, 34L
+
+#define SN_secp521r1 "secp521r1"
+#define NID_secp521r1 716
+#define OBJ_secp521r1 1L, 3L, 132L, 0L, 35L
+
+#define SN_sect113r1 "sect113r1"
+#define NID_sect113r1 717
+#define OBJ_sect113r1 1L, 3L, 132L, 0L, 4L
+
+#define SN_sect113r2 "sect113r2"
+#define NID_sect113r2 718
+#define OBJ_sect113r2 1L, 3L, 132L, 0L, 5L
+
+#define SN_sect131r1 "sect131r1"
+#define NID_sect131r1 719
+#define OBJ_sect131r1 1L, 3L, 132L, 0L, 22L
+
+#define SN_sect131r2 "sect131r2"
+#define NID_sect131r2 720
+#define OBJ_sect131r2 1L, 3L, 132L, 0L, 23L
+
+#define SN_sect163k1 "sect163k1"
+#define NID_sect163k1 721
+#define OBJ_sect163k1 1L, 3L, 132L, 0L, 1L
+
+#define SN_sect163r1 "sect163r1"
+#define NID_sect163r1 722
+#define OBJ_sect163r1 1L, 3L, 132L, 0L, 2L
+
+#define SN_sect163r2 "sect163r2"
+#define NID_sect163r2 723
+#define OBJ_sect163r2 1L, 3L, 132L, 0L, 15L
+
+#define SN_sect193r1 "sect193r1"
+#define NID_sect193r1 724
+#define OBJ_sect193r1 1L, 3L, 132L, 0L, 24L
+
+#define SN_sect193r2 "sect193r2"
+#define NID_sect193r2 725
+#define OBJ_sect193r2 1L, 3L, 132L, 0L, 25L
+
+#define SN_sect233k1 "sect233k1"
+#define NID_sect233k1 726
+#define OBJ_sect233k1 1L, 3L, 132L, 0L, 26L
+
+#define SN_sect233r1 "sect233r1"
+#define NID_sect233r1 727
+#define OBJ_sect233r1 1L, 3L, 132L, 0L, 27L
+
+#define SN_sect239k1 "sect239k1"
+#define NID_sect239k1 728
+#define OBJ_sect239k1 1L, 3L, 132L, 0L, 3L
+
+#define SN_sect283k1 "sect283k1"
+#define NID_sect283k1 729
+#define OBJ_sect283k1 1L, 3L, 132L, 0L, 16L
+
+#define SN_sect283r1 "sect283r1"
+#define NID_sect283r1 730
+#define OBJ_sect283r1 1L, 3L, 132L, 0L, 17L
+
+#define SN_sect409k1 "sect409k1"
+#define NID_sect409k1 731
+#define OBJ_sect409k1 1L, 3L, 132L, 0L, 36L
+
+#define SN_sect409r1 "sect409r1"
+#define NID_sect409r1 732
+#define OBJ_sect409r1 1L, 3L, 132L, 0L, 37L
+
+#define SN_sect571k1 "sect571k1"
+#define NID_sect571k1 733
+#define OBJ_sect571k1 1L, 3L, 132L, 0L, 38L
+
+#define SN_sect571r1 "sect571r1"
+#define NID_sect571r1 734
+#define OBJ_sect571r1 1L, 3L, 132L, 0L, 39L
+
+#define SN_wap_wsg_idm_ecid_wtls1 "wap-wsg-idm-ecid-wtls1"
+#define NID_wap_wsg_idm_ecid_wtls1 735
+#define OBJ_wap_wsg_idm_ecid_wtls1 2L, 23L, 43L, 1L, 4L, 1L
+
+#define SN_wap_wsg_idm_ecid_wtls3 "wap-wsg-idm-ecid-wtls3"
+#define NID_wap_wsg_idm_ecid_wtls3 736
+#define OBJ_wap_wsg_idm_ecid_wtls3 2L, 23L, 43L, 1L, 4L, 3L
+
+#define SN_wap_wsg_idm_ecid_wtls4 "wap-wsg-idm-ecid-wtls4"
+#define NID_wap_wsg_idm_ecid_wtls4 737
+#define OBJ_wap_wsg_idm_ecid_wtls4 2L, 23L, 43L, 1L, 4L, 4L
+
+#define SN_wap_wsg_idm_ecid_wtls5 "wap-wsg-idm-ecid-wtls5"
+#define NID_wap_wsg_idm_ecid_wtls5 738
+#define OBJ_wap_wsg_idm_ecid_wtls5 2L, 23L, 43L, 1L, 4L, 5L
+
+#define SN_wap_wsg_idm_ecid_wtls6 "wap-wsg-idm-ecid-wtls6"
+#define NID_wap_wsg_idm_ecid_wtls6 739
+#define OBJ_wap_wsg_idm_ecid_wtls6 2L, 23L, 43L, 1L, 4L, 6L
+
+#define SN_wap_wsg_idm_ecid_wtls7 "wap-wsg-idm-ecid-wtls7"
+#define NID_wap_wsg_idm_ecid_wtls7 740
+#define OBJ_wap_wsg_idm_ecid_wtls7 2L, 23L, 43L, 1L, 4L, 7L
+
+#define SN_wap_wsg_idm_ecid_wtls8 "wap-wsg-idm-ecid-wtls8"
+#define NID_wap_wsg_idm_ecid_wtls8 741
+#define OBJ_wap_wsg_idm_ecid_wtls8 2L, 23L, 43L, 1L, 4L, 8L
+
+#define SN_wap_wsg_idm_ecid_wtls9 "wap-wsg-idm-ecid-wtls9"
+#define NID_wap_wsg_idm_ecid_wtls9 742
+#define OBJ_wap_wsg_idm_ecid_wtls9 2L, 23L, 43L, 1L, 4L, 9L
+
+#define SN_wap_wsg_idm_ecid_wtls10 "wap-wsg-idm-ecid-wtls10"
+#define NID_wap_wsg_idm_ecid_wtls10 743
+#define OBJ_wap_wsg_idm_ecid_wtls10 2L, 23L, 43L, 1L, 4L, 10L
+
+#define SN_wap_wsg_idm_ecid_wtls11 "wap-wsg-idm-ecid-wtls11"
+#define NID_wap_wsg_idm_ecid_wtls11 744
+#define OBJ_wap_wsg_idm_ecid_wtls11 2L, 23L, 43L, 1L, 4L, 11L
+
+#define SN_wap_wsg_idm_ecid_wtls12 "wap-wsg-idm-ecid-wtls12"
+#define NID_wap_wsg_idm_ecid_wtls12 745
+#define OBJ_wap_wsg_idm_ecid_wtls12 2L, 23L, 43L, 1L, 4L, 12L
+
+#define SN_any_policy "anyPolicy"
+#define LN_any_policy "X509v3 Any Policy"
+#define NID_any_policy 746
+#define OBJ_any_policy 2L, 5L, 29L, 32L, 0L
+
+#define SN_policy_mappings "policyMappings"
+#define LN_policy_mappings "X509v3 Policy Mappings"
+#define NID_policy_mappings 747
+#define OBJ_policy_mappings 2L, 5L, 29L, 33L
+
+#define SN_inhibit_any_policy "inhibitAnyPolicy"
+#define LN_inhibit_any_policy "X509v3 Inhibit Any Policy"
+#define NID_inhibit_any_policy 748
+#define OBJ_inhibit_any_policy 2L, 5L, 29L, 54L
+
+#define SN_ipsec3 "Oakley-EC2N-3"
+#define LN_ipsec3 "ipsec3"
+#define NID_ipsec3 749
+
+#define SN_ipsec4 "Oakley-EC2N-4"
+#define LN_ipsec4 "ipsec4"
+#define NID_ipsec4 750
+
+#define SN_camellia_128_cbc "CAMELLIA-128-CBC"
+#define LN_camellia_128_cbc "camellia-128-cbc"
+#define NID_camellia_128_cbc 751
+#define OBJ_camellia_128_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 2L
+
+#define SN_camellia_192_cbc "CAMELLIA-192-CBC"
+#define LN_camellia_192_cbc "camellia-192-cbc"
+#define NID_camellia_192_cbc 752
+#define OBJ_camellia_192_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 3L
+
+#define SN_camellia_256_cbc "CAMELLIA-256-CBC"
+#define LN_camellia_256_cbc "camellia-256-cbc"
+#define NID_camellia_256_cbc 753
+#define OBJ_camellia_256_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 4L
+
+#define SN_camellia_128_ecb "CAMELLIA-128-ECB"
+#define LN_camellia_128_ecb "camellia-128-ecb"
+#define NID_camellia_128_ecb 754
+#define OBJ_camellia_128_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 1L
+
+#define SN_camellia_192_ecb "CAMELLIA-192-ECB"
+#define LN_camellia_192_ecb "camellia-192-ecb"
+#define NID_camellia_192_ecb 755
+#define OBJ_camellia_192_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 21L
+
+#define SN_camellia_256_ecb "CAMELLIA-256-ECB"
+#define LN_camellia_256_ecb "camellia-256-ecb"
+#define NID_camellia_256_ecb 756
+#define OBJ_camellia_256_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 41L
+
+#define SN_camellia_128_cfb128 "CAMELLIA-128-CFB"
+#define LN_camellia_128_cfb128 "camellia-128-cfb"
+#define NID_camellia_128_cfb128 757
+#define OBJ_camellia_128_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 4L
+
+#define SN_camellia_192_cfb128 "CAMELLIA-192-CFB"
+#define LN_camellia_192_cfb128 "camellia-192-cfb"
+#define NID_camellia_192_cfb128 758
+#define OBJ_camellia_192_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 24L
+
+#define SN_camellia_256_cfb128 "CAMELLIA-256-CFB"
+#define LN_camellia_256_cfb128 "camellia-256-cfb"
+#define NID_camellia_256_cfb128 759
+#define OBJ_camellia_256_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 44L
+
+#define SN_camellia_128_cfb1 "CAMELLIA-128-CFB1"
+#define LN_camellia_128_cfb1 "camellia-128-cfb1"
+#define NID_camellia_128_cfb1 760
+
+#define SN_camellia_192_cfb1 "CAMELLIA-192-CFB1"
+#define LN_camellia_192_cfb1 "camellia-192-cfb1"
+#define NID_camellia_192_cfb1 761
+
+#define SN_camellia_256_cfb1 "CAMELLIA-256-CFB1"
+#define LN_camellia_256_cfb1 "camellia-256-cfb1"
+#define NID_camellia_256_cfb1 762
+
+#define SN_camellia_128_cfb8 "CAMELLIA-128-CFB8"
+#define LN_camellia_128_cfb8 "camellia-128-cfb8"
+#define NID_camellia_128_cfb8 763
+
+#define SN_camellia_192_cfb8 "CAMELLIA-192-CFB8"
+#define LN_camellia_192_cfb8 "camellia-192-cfb8"
+#define NID_camellia_192_cfb8 764
+
+#define SN_camellia_256_cfb8 "CAMELLIA-256-CFB8"
+#define LN_camellia_256_cfb8 "camellia-256-cfb8"
+#define NID_camellia_256_cfb8 765
+
+#define SN_camellia_128_ofb128 "CAMELLIA-128-OFB"
+#define LN_camellia_128_ofb128 "camellia-128-ofb"
+#define NID_camellia_128_ofb128 766
+#define OBJ_camellia_128_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 3L
+
+#define SN_camellia_192_ofb128 "CAMELLIA-192-OFB"
+#define LN_camellia_192_ofb128 "camellia-192-ofb"
+#define NID_camellia_192_ofb128 767
+#define OBJ_camellia_192_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 23L
+
+#define SN_camellia_256_ofb128 "CAMELLIA-256-OFB"
+#define LN_camellia_256_ofb128 "camellia-256-ofb"
+#define NID_camellia_256_ofb128 768
+#define OBJ_camellia_256_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 43L
+
+#define SN_subject_directory_attributes "subjectDirectoryAttributes"
+#define LN_subject_directory_attributes "X509v3 Subject Directory Attributes"
+#define NID_subject_directory_attributes 769
+#define OBJ_subject_directory_attributes 2L, 5L, 29L, 9L
+
+#define SN_issuing_distribution_point "issuingDistributionPoint"
+#define LN_issuing_distribution_point "X509v3 Issuing Distribution Point"
+#define NID_issuing_distribution_point 770
+#define OBJ_issuing_distribution_point 2L, 5L, 29L, 28L
+
+#define SN_certificate_issuer "certificateIssuer"
+#define LN_certificate_issuer "X509v3 Certificate Issuer"
+#define NID_certificate_issuer 771
+#define OBJ_certificate_issuer 2L, 5L, 29L, 29L
+
+#define SN_kisa "KISA"
+#define LN_kisa "kisa"
+#define NID_kisa 773
+#define OBJ_kisa 1L, 2L, 410L, 200004L
+
+#define SN_seed_ecb "SEED-ECB"
+#define LN_seed_ecb "seed-ecb"
+#define NID_seed_ecb 776
+#define OBJ_seed_ecb 1L, 2L, 410L, 200004L, 1L, 3L
+
+#define SN_seed_cbc "SEED-CBC"
+#define LN_seed_cbc "seed-cbc"
+#define NID_seed_cbc 777
+#define OBJ_seed_cbc 1L, 2L, 410L, 200004L, 1L, 4L
+
+#define SN_seed_ofb128 "SEED-OFB"
+#define LN_seed_ofb128 "seed-ofb"
+#define NID_seed_ofb128 778
+#define OBJ_seed_ofb128 1L, 2L, 410L, 200004L, 1L, 6L
+
+#define SN_seed_cfb128 "SEED-CFB"
+#define LN_seed_cfb128 "seed-cfb"
+#define NID_seed_cfb128 779
+#define OBJ_seed_cfb128 1L, 2L, 410L, 200004L, 1L, 5L
+
+#define SN_hmac_md5 "HMAC-MD5"
+#define LN_hmac_md5 "hmac-md5"
+#define NID_hmac_md5 780
+#define OBJ_hmac_md5 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 1L
+
+#define SN_hmac_sha1 "HMAC-SHA1"
+#define LN_hmac_sha1 "hmac-sha1"
+#define NID_hmac_sha1 781
+#define OBJ_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 2L
+
+#define SN_id_PasswordBasedMAC "id-PasswordBasedMAC"
+#define LN_id_PasswordBasedMAC "password based MAC"
+#define NID_id_PasswordBasedMAC 782
+#define OBJ_id_PasswordBasedMAC 1L, 2L, 840L, 113533L, 7L, 66L, 13L
+
+#define SN_id_DHBasedMac "id-DHBasedMac"
+#define LN_id_DHBasedMac "Diffie-Hellman based MAC"
+#define NID_id_DHBasedMac 783
+#define OBJ_id_DHBasedMac 1L, 2L, 840L, 113533L, 7L, 66L, 30L
+
+#define SN_id_it_suppLangTags "id-it-suppLangTags"
+#define NID_id_it_suppLangTags 784
+#define OBJ_id_it_suppLangTags 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 16L
+
+#define SN_caRepository "caRepository"
+#define LN_caRepository "CA Repository"
+#define NID_caRepository 785
+#define OBJ_caRepository 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 5L
+
+#define SN_id_smime_ct_compressedData "id-smime-ct-compressedData"
+#define NID_id_smime_ct_compressedData 786
+#define OBJ_id_smime_ct_compressedData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 9L
+
+#define SN_id_ct_asciiTextWithCRLF "id-ct-asciiTextWithCRLF"
+#define NID_id_ct_asciiTextWithCRLF 787
+#define OBJ_id_ct_asciiTextWithCRLF 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 27L
+
+#define SN_id_aes128_wrap "id-aes128-wrap"
+#define NID_id_aes128_wrap 788
+#define OBJ_id_aes128_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 5L
+
+#define SN_id_aes192_wrap "id-aes192-wrap"
+#define NID_id_aes192_wrap 789
+#define OBJ_id_aes192_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 25L
+
+#define SN_id_aes256_wrap "id-aes256-wrap"
+#define NID_id_aes256_wrap 790
+#define OBJ_id_aes256_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 45L
+
+#define SN_ecdsa_with_Recommended "ecdsa-with-Recommended"
+#define NID_ecdsa_with_Recommended 791
+#define OBJ_ecdsa_with_Recommended 1L, 2L, 840L, 10045L, 4L, 2L
+
+#define SN_ecdsa_with_Specified "ecdsa-with-Specified"
+#define NID_ecdsa_with_Specified 792
+#define OBJ_ecdsa_with_Specified 1L, 2L, 840L, 10045L, 4L, 3L
+
+#define SN_ecdsa_with_SHA224 "ecdsa-with-SHA224"
+#define NID_ecdsa_with_SHA224 793
+#define OBJ_ecdsa_with_SHA224 1L, 2L, 840L, 10045L, 4L, 3L, 1L
+
+#define SN_ecdsa_with_SHA256 "ecdsa-with-SHA256"
+#define NID_ecdsa_with_SHA256 794
+#define OBJ_ecdsa_with_SHA256 1L, 2L, 840L, 10045L, 4L, 3L, 2L
+
+#define SN_ecdsa_with_SHA384 "ecdsa-with-SHA384"
+#define NID_ecdsa_with_SHA384 795
+#define OBJ_ecdsa_with_SHA384 1L, 2L, 840L, 10045L, 4L, 3L, 3L
+
+#define SN_ecdsa_with_SHA512 "ecdsa-with-SHA512"
+#define NID_ecdsa_with_SHA512 796
+#define OBJ_ecdsa_with_SHA512 1L, 2L, 840L, 10045L, 4L, 3L, 4L
+
+#define LN_hmacWithMD5 "hmacWithMD5"
+#define NID_hmacWithMD5 797
+#define OBJ_hmacWithMD5 1L, 2L, 840L, 113549L, 2L, 6L
+
+#define LN_hmacWithSHA224 "hmacWithSHA224"
+#define NID_hmacWithSHA224 798
+#define OBJ_hmacWithSHA224 1L, 2L, 840L, 113549L, 2L, 8L
+
+#define LN_hmacWithSHA256 "hmacWithSHA256"
+#define NID_hmacWithSHA256 799
+#define OBJ_hmacWithSHA256 1L, 2L, 840L, 113549L, 2L, 9L
+
+#define LN_hmacWithSHA384 "hmacWithSHA384"
+#define NID_hmacWithSHA384 800
+#define OBJ_hmacWithSHA384 1L, 2L, 840L, 113549L, 2L, 10L
+
+#define LN_hmacWithSHA512 "hmacWithSHA512"
+#define NID_hmacWithSHA512 801
+#define OBJ_hmacWithSHA512 1L, 2L, 840L, 113549L, 2L, 11L
+
+#define SN_dsa_with_SHA224 "dsa_with_SHA224"
+#define NID_dsa_with_SHA224 802
+#define OBJ_dsa_with_SHA224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 1L
+
+#define SN_dsa_with_SHA256 "dsa_with_SHA256"
+#define NID_dsa_with_SHA256 803
+#define OBJ_dsa_with_SHA256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 2L
+
+#define SN_whirlpool "whirlpool"
+#define NID_whirlpool 804
+#define OBJ_whirlpool 1L, 0L, 10118L, 3L, 0L, 55L
+
+#define SN_cryptopro "cryptopro"
+#define NID_cryptopro 805
+#define OBJ_cryptopro 1L, 2L, 643L, 2L, 2L
+
+#define SN_cryptocom "cryptocom"
+#define NID_cryptocom 806
+#define OBJ_cryptocom 1L, 2L, 643L, 2L, 9L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001 \
+  "id-GostR3411-94-with-GostR3410-2001"
+#define LN_id_GostR3411_94_with_GostR3410_2001 \
+  "GOST R 34.11-94 with GOST R 34.10-2001"
+#define NID_id_GostR3411_94_with_GostR3410_2001 807
+#define OBJ_id_GostR3411_94_with_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_94 "id-GostR3411-94-with-GostR3410-94"
+#define LN_id_GostR3411_94_with_GostR3410_94 \
+  "GOST R 34.11-94 with GOST R 34.10-94"
+#define NID_id_GostR3411_94_with_GostR3410_94 808
+#define OBJ_id_GostR3411_94_with_GostR3410_94 1L, 2L, 643L, 2L, 2L, 4L
+
+#define SN_id_GostR3411_94 "md_gost94"
+#define LN_id_GostR3411_94 "GOST R 34.11-94"
+#define NID_id_GostR3411_94 809
+#define OBJ_id_GostR3411_94 1L, 2L, 643L, 2L, 2L, 9L
+
+#define SN_id_HMACGostR3411_94 "id-HMACGostR3411-94"
+#define LN_id_HMACGostR3411_94 "HMAC GOST 34.11-94"
+#define NID_id_HMACGostR3411_94 810
+#define OBJ_id_HMACGostR3411_94 1L, 2L, 643L, 2L, 2L, 10L
+
+#define SN_id_GostR3410_2001 "gost2001"
+#define LN_id_GostR3410_2001 "GOST R 34.10-2001"
+#define NID_id_GostR3410_2001 811
+#define OBJ_id_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 19L
+
+#define SN_id_GostR3410_94 "gost94"
+#define LN_id_GostR3410_94 "GOST R 34.10-94"
+#define NID_id_GostR3410_94 812
+#define OBJ_id_GostR3410_94 1L, 2L, 643L, 2L, 2L, 20L
+
+#define SN_id_Gost28147_89 "gost89"
+#define LN_id_Gost28147_89 "GOST 28147-89"
+#define NID_id_Gost28147_89 813
+#define OBJ_id_Gost28147_89 1L, 2L, 643L, 2L, 2L, 21L
+
+#define SN_gost89_cnt "gost89-cnt"
+#define NID_gost89_cnt 814
+
+#define SN_id_Gost28147_89_MAC "gost-mac"
+#define LN_id_Gost28147_89_MAC "GOST 28147-89 MAC"
+#define NID_id_Gost28147_89_MAC 815
+#define OBJ_id_Gost28147_89_MAC 1L, 2L, 643L, 2L, 2L, 22L
+
+#define SN_id_GostR3411_94_prf "prf-gostr3411-94"
+#define LN_id_GostR3411_94_prf "GOST R 34.11-94 PRF"
+#define NID_id_GostR3411_94_prf 816
+#define OBJ_id_GostR3411_94_prf 1L, 2L, 643L, 2L, 2L, 23L
+
+#define SN_id_GostR3410_2001DH "id-GostR3410-2001DH"
+#define LN_id_GostR3410_2001DH "GOST R 34.10-2001 DH"
+#define NID_id_GostR3410_2001DH 817
+#define OBJ_id_GostR3410_2001DH 1L, 2L, 643L, 2L, 2L, 98L
+
+#define SN_id_GostR3410_94DH "id-GostR3410-94DH"
+#define LN_id_GostR3410_94DH "GOST R 34.10-94 DH"
+#define NID_id_GostR3410_94DH 818
+#define OBJ_id_GostR3410_94DH 1L, 2L, 643L, 2L, 2L, 99L
+
+#define SN_id_Gost28147_89_CryptoPro_KeyMeshing \
+  "id-Gost28147-89-CryptoPro-KeyMeshing"
+#define NID_id_Gost28147_89_CryptoPro_KeyMeshing 819
+#define OBJ_id_Gost28147_89_CryptoPro_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 1L
+
+#define SN_id_Gost28147_89_None_KeyMeshing "id-Gost28147-89-None-KeyMeshing"
+#define NID_id_Gost28147_89_None_KeyMeshing 820
+#define OBJ_id_Gost28147_89_None_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 0L
+
+#define SN_id_GostR3411_94_TestParamSet "id-GostR3411-94-TestParamSet"
+#define NID_id_GostR3411_94_TestParamSet 821
+#define OBJ_id_GostR3411_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 30L, 0L
+
+#define SN_id_GostR3411_94_CryptoProParamSet "id-GostR3411-94-CryptoProParamSet"
+#define NID_id_GostR3411_94_CryptoProParamSet 822
+#define OBJ_id_GostR3411_94_CryptoProParamSet 1L, 2L, 643L, 2L, 2L, 30L, 1L
+
+#define SN_id_Gost28147_89_TestParamSet "id-Gost28147-89-TestParamSet"
+#define NID_id_Gost28147_89_TestParamSet 823
+#define OBJ_id_Gost28147_89_TestParamSet 1L, 2L, 643L, 2L, 2L, 31L, 0L
+
+#define SN_id_Gost28147_89_CryptoPro_A_ParamSet \
+  "id-Gost28147-89-CryptoPro-A-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_A_ParamSet 824
+#define OBJ_id_Gost28147_89_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 1L
+
+#define SN_id_Gost28147_89_CryptoPro_B_ParamSet \
+  "id-Gost28147-89-CryptoPro-B-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_B_ParamSet 825
+#define OBJ_id_Gost28147_89_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 2L
+
+#define SN_id_Gost28147_89_CryptoPro_C_ParamSet \
+  "id-Gost28147-89-CryptoPro-C-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_C_ParamSet 826
+#define OBJ_id_Gost28147_89_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 3L
+
+#define SN_id_Gost28147_89_CryptoPro_D_ParamSet \
+  "id-Gost28147-89-CryptoPro-D-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_D_ParamSet 827
+#define OBJ_id_Gost28147_89_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 4L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet 828
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 5L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet 829
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 6L
+
+#define SN_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-RIC-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet 830
+#define OBJ_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 7L
+
+#define SN_id_GostR3410_94_TestParamSet "id-GostR3410-94-TestParamSet"
+#define NID_id_GostR3410_94_TestParamSet 831
+#define OBJ_id_GostR3410_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 32L, 0L
+
+#define SN_id_GostR3410_94_CryptoPro_A_ParamSet \
+  "id-GostR3410-94-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_A_ParamSet 832
+#define OBJ_id_GostR3410_94_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_B_ParamSet \
+  "id-GostR3410-94-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_B_ParamSet 833
+#define OBJ_id_GostR3410_94_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 3L
+
+#define SN_id_GostR3410_94_CryptoPro_C_ParamSet \
+  "id-GostR3410-94-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_C_ParamSet 834
+#define OBJ_id_GostR3410_94_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 4L
+
+#define SN_id_GostR3410_94_CryptoPro_D_ParamSet \
+  "id-GostR3410-94-CryptoPro-D-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_D_ParamSet 835
+#define OBJ_id_GostR3410_94_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 5L
+
+#define SN_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchA_ParamSet 836
+#define OBJ_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 1L
+
+#define SN_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchB_ParamSet 837
+#define OBJ_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchC-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchC_ParamSet 838
+#define OBJ_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 3L
+
+#define SN_id_GostR3410_2001_TestParamSet "id-GostR3410-2001-TestParamSet"
+#define NID_id_GostR3410_2001_TestParamSet 839
+#define OBJ_id_GostR3410_2001_TestParamSet 1L, 2L, 643L, 2L, 2L, 35L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_A_ParamSet \
+  "id-GostR3410-2001-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_A_ParamSet 840
+#define OBJ_id_GostR3410_2001_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 1L
+
+#define SN_id_GostR3410_2001_CryptoPro_B_ParamSet \
+  "id-GostR3410-2001-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_B_ParamSet 841
+#define OBJ_id_GostR3410_2001_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 2L
+
+#define SN_id_GostR3410_2001_CryptoPro_C_ParamSet \
+  "id-GostR3410-2001-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_C_ParamSet 842
+#define OBJ_id_GostR3410_2001_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 3L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet 843
+#define OBJ_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet 844
+#define OBJ_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 1L
+
+#define SN_id_GostR3410_94_a "id-GostR3410-94-a"
+#define NID_id_GostR3410_94_a 845
+#define OBJ_id_GostR3410_94_a 1L, 2L, 643L, 2L, 2L, 20L, 1L
+
+#define SN_id_GostR3410_94_aBis "id-GostR3410-94-aBis"
+#define NID_id_GostR3410_94_aBis 846
+#define OBJ_id_GostR3410_94_aBis 1L, 2L, 643L, 2L, 2L, 20L, 2L
+
+#define SN_id_GostR3410_94_b "id-GostR3410-94-b"
+#define NID_id_GostR3410_94_b 847
+#define OBJ_id_GostR3410_94_b 1L, 2L, 643L, 2L, 2L, 20L, 3L
+
+#define SN_id_GostR3410_94_bBis "id-GostR3410-94-bBis"
+#define NID_id_GostR3410_94_bBis 848
+#define OBJ_id_GostR3410_94_bBis 1L, 2L, 643L, 2L, 2L, 20L, 4L
+
+#define SN_id_Gost28147_89_cc "id-Gost28147-89-cc"
+#define LN_id_Gost28147_89_cc "GOST 28147-89 Cryptocom ParamSet"
+#define NID_id_Gost28147_89_cc 849
+#define OBJ_id_Gost28147_89_cc 1L, 2L, 643L, 2L, 9L, 1L, 6L, 1L
+
+#define SN_id_GostR3410_94_cc "gost94cc"
+#define LN_id_GostR3410_94_cc "GOST 34.10-94 Cryptocom"
+#define NID_id_GostR3410_94_cc 850
+#define OBJ_id_GostR3410_94_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 3L
+
+#define SN_id_GostR3410_2001_cc "gost2001cc"
+#define LN_id_GostR3410_2001_cc "GOST 34.10-2001 Cryptocom"
+#define NID_id_GostR3410_2001_cc 851
+#define OBJ_id_GostR3410_2001_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 4L
+
+#define SN_id_GostR3411_94_with_GostR3410_94_cc \
+  "id-GostR3411-94-with-GostR3410-94-cc"
+#define LN_id_GostR3411_94_with_GostR3410_94_cc \
+  "GOST R 34.11-94 with GOST R 34.10-94 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_94_cc 852
+#define OBJ_id_GostR3411_94_with_GostR3410_94_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "id-GostR3411-94-with-GostR3410-2001-cc"
+#define LN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_2001_cc 853
+#define OBJ_id_GostR3411_94_with_GostR3410_2001_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 4L
+
+#define SN_id_GostR3410_2001_ParamSet_cc "id-GostR3410-2001-ParamSet-cc"
+#define LN_id_GostR3410_2001_ParamSet_cc \
+  "GOST R 3410-2001 Parameter Set Cryptocom"
+#define NID_id_GostR3410_2001_ParamSet_cc 854
+#define OBJ_id_GostR3410_2001_ParamSet_cc 1L, 2L, 643L, 2L, 9L, 1L, 8L, 1L
+
+#define SN_hmac "HMAC"
+#define LN_hmac "hmac"
+#define NID_hmac 855
+
+#define SN_LocalKeySet "LocalKeySet"
+#define LN_LocalKeySet "Microsoft Local Key set"
+#define NID_LocalKeySet 856
+#define OBJ_LocalKeySet 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 2L
+
+#define SN_freshest_crl "freshestCRL"
+#define LN_freshest_crl "X509v3 Freshest CRL"
+#define NID_freshest_crl 857
+#define OBJ_freshest_crl 2L, 5L, 29L, 46L
+
+#define SN_id_on_permanentIdentifier "id-on-permanentIdentifier"
+#define LN_id_on_permanentIdentifier "Permanent Identifier"
+#define NID_id_on_permanentIdentifier 858
+#define OBJ_id_on_permanentIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 3L
+
+#define LN_searchGuide "searchGuide"
+#define NID_searchGuide 859
+#define OBJ_searchGuide 2L, 5L, 4L, 14L
+
+#define LN_businessCategory "businessCategory"
+#define NID_businessCategory 860
+#define OBJ_businessCategory 2L, 5L, 4L, 15L
+
+#define LN_postalAddress "postalAddress"
+#define NID_postalAddress 861
+#define OBJ_postalAddress 2L, 5L, 4L, 16L
+
+#define LN_postOfficeBox "postOfficeBox"
+#define NID_postOfficeBox 862
+#define OBJ_postOfficeBox 2L, 5L, 4L, 18L
+
+#define LN_physicalDeliveryOfficeName "physicalDeliveryOfficeName"
+#define NID_physicalDeliveryOfficeName 863
+#define OBJ_physicalDeliveryOfficeName 2L, 5L, 4L, 19L
+
+#define LN_telephoneNumber "telephoneNumber"
+#define NID_telephoneNumber 864
+#define OBJ_telephoneNumber 2L, 5L, 4L, 20L
+
+#define LN_telexNumber "telexNumber"
+#define NID_telexNumber 865
+#define OBJ_telexNumber 2L, 5L, 4L, 21L
+
+#define LN_teletexTerminalIdentifier "teletexTerminalIdentifier"
+#define NID_teletexTerminalIdentifier 866
+#define OBJ_teletexTerminalIdentifier 2L, 5L, 4L, 22L
+
+#define LN_facsimileTelephoneNumber "facsimileTelephoneNumber"
+#define NID_facsimileTelephoneNumber 867
+#define OBJ_facsimileTelephoneNumber 2L, 5L, 4L, 23L
+
+#define LN_x121Address "x121Address"
+#define NID_x121Address 868
+#define OBJ_x121Address 2L, 5L, 4L, 24L
+
+#define LN_internationaliSDNNumber "internationaliSDNNumber"
+#define NID_internationaliSDNNumber 869
+#define OBJ_internationaliSDNNumber 2L, 5L, 4L, 25L
+
+#define LN_registeredAddress "registeredAddress"
+#define NID_registeredAddress 870
+#define OBJ_registeredAddress 2L, 5L, 4L, 26L
+
+#define LN_destinationIndicator "destinationIndicator"
+#define NID_destinationIndicator 871
+#define OBJ_destinationIndicator 2L, 5L, 4L, 27L
+
+#define LN_preferredDeliveryMethod "preferredDeliveryMethod"
+#define NID_preferredDeliveryMethod 872
+#define OBJ_preferredDeliveryMethod 2L, 5L, 4L, 28L
+
+#define LN_presentationAddress "presentationAddress"
+#define NID_presentationAddress 873
+#define OBJ_presentationAddress 2L, 5L, 4L, 29L
+
+#define LN_supportedApplicationContext "supportedApplicationContext"
+#define NID_supportedApplicationContext 874
+#define OBJ_supportedApplicationContext 2L, 5L, 4L, 30L
+
+#define SN_member "member"
+#define NID_member 875
+#define OBJ_member 2L, 5L, 4L, 31L
+
+#define SN_owner "owner"
+#define NID_owner 876
+#define OBJ_owner 2L, 5L, 4L, 32L
+
+#define LN_roleOccupant "roleOccupant"
+#define NID_roleOccupant 877
+#define OBJ_roleOccupant 2L, 5L, 4L, 33L
+
+#define SN_seeAlso "seeAlso"
+#define NID_seeAlso 878
+#define OBJ_seeAlso 2L, 5L, 4L, 34L
+
+#define LN_userPassword "userPassword"
+#define NID_userPassword 879
+#define OBJ_userPassword 2L, 5L, 4L, 35L
+
+#define LN_userCertificate "userCertificate"
+#define NID_userCertificate 880
+#define OBJ_userCertificate 2L, 5L, 4L, 36L
+
+#define LN_cACertificate "cACertificate"
+#define NID_cACertificate 881
+#define OBJ_cACertificate 2L, 5L, 4L, 37L
+
+#define LN_authorityRevocationList "authorityRevocationList"
+#define NID_authorityRevocationList 882
+#define OBJ_authorityRevocationList 2L, 5L, 4L, 38L
+
+#define LN_certificateRevocationList "certificateRevocationList"
+#define NID_certificateRevocationList 883
+#define OBJ_certificateRevocationList 2L, 5L, 4L, 39L
+
+#define LN_crossCertificatePair "crossCertificatePair"
+#define NID_crossCertificatePair 884
+#define OBJ_crossCertificatePair 2L, 5L, 4L, 40L
+
+#define LN_enhancedSearchGuide "enhancedSearchGuide"
+#define NID_enhancedSearchGuide 885
+#define OBJ_enhancedSearchGuide 2L, 5L, 4L, 47L
+
+#define LN_protocolInformation "protocolInformation"
+#define NID_protocolInformation 886
+#define OBJ_protocolInformation 2L, 5L, 4L, 48L
+
+#define LN_distinguishedName "distinguishedName"
+#define NID_distinguishedName 887
+#define OBJ_distinguishedName 2L, 5L, 4L, 49L
+
+#define LN_uniqueMember "uniqueMember"
+#define NID_uniqueMember 888
+#define OBJ_uniqueMember 2L, 5L, 4L, 50L
+
+#define LN_houseIdentifier "houseIdentifier"
+#define NID_houseIdentifier 889
+#define OBJ_houseIdentifier 2L, 5L, 4L, 51L
+
+#define LN_supportedAlgorithms "supportedAlgorithms"
+#define NID_supportedAlgorithms 890
+#define OBJ_supportedAlgorithms 2L, 5L, 4L, 52L
+
+#define LN_deltaRevocationList "deltaRevocationList"
+#define NID_deltaRevocationList 891
+#define OBJ_deltaRevocationList 2L, 5L, 4L, 53L
+
+#define SN_dmdName "dmdName"
+#define NID_dmdName 892
+#define OBJ_dmdName 2L, 5L, 4L, 54L
+
+#define SN_id_alg_PWRI_KEK "id-alg-PWRI-KEK"
+#define NID_id_alg_PWRI_KEK 893
+#define OBJ_id_alg_PWRI_KEK 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 9L
+
+#define SN_cmac "CMAC"
+#define LN_cmac "cmac"
+#define NID_cmac 894
+
+#define SN_aes_128_gcm "id-aes128-GCM"
+#define LN_aes_128_gcm "aes-128-gcm"
+#define NID_aes_128_gcm 895
+#define OBJ_aes_128_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 6L
+
+#define SN_aes_128_ccm "id-aes128-CCM"
+#define LN_aes_128_ccm "aes-128-ccm"
+#define NID_aes_128_ccm 896
+#define OBJ_aes_128_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 7L
+
+#define SN_id_aes128_wrap_pad "id-aes128-wrap-pad"
+#define NID_id_aes128_wrap_pad 897
+#define OBJ_id_aes128_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 8L
+
+#define SN_aes_192_gcm "id-aes192-GCM"
+#define LN_aes_192_gcm "aes-192-gcm"
+#define NID_aes_192_gcm 898
+#define OBJ_aes_192_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 26L
+
+#define SN_aes_192_ccm "id-aes192-CCM"
+#define LN_aes_192_ccm "aes-192-ccm"
+#define NID_aes_192_ccm 899
+#define OBJ_aes_192_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 27L
+
+#define SN_id_aes192_wrap_pad "id-aes192-wrap-pad"
+#define NID_id_aes192_wrap_pad 900
+#define OBJ_id_aes192_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 28L
+
+#define SN_aes_256_gcm "id-aes256-GCM"
+#define LN_aes_256_gcm "aes-256-gcm"
+#define NID_aes_256_gcm 901
+#define OBJ_aes_256_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 46L
+
+#define SN_aes_256_ccm "id-aes256-CCM"
+#define LN_aes_256_ccm "aes-256-ccm"
+#define NID_aes_256_ccm 902
+#define OBJ_aes_256_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 47L
+
+#define SN_id_aes256_wrap_pad "id-aes256-wrap-pad"
+#define NID_id_aes256_wrap_pad 903
+#define OBJ_id_aes256_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 48L
+
+#define SN_aes_128_ctr "AES-128-CTR"
+#define LN_aes_128_ctr "aes-128-ctr"
+#define NID_aes_128_ctr 904
+
+#define SN_aes_192_ctr "AES-192-CTR"
+#define LN_aes_192_ctr "aes-192-ctr"
+#define NID_aes_192_ctr 905
+
+#define SN_aes_256_ctr "AES-256-CTR"
+#define LN_aes_256_ctr "aes-256-ctr"
+#define NID_aes_256_ctr 906
+
+#define SN_id_camellia128_wrap "id-camellia128-wrap"
+#define NID_id_camellia128_wrap 907
+#define OBJ_id_camellia128_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 2L
+
+#define SN_id_camellia192_wrap "id-camellia192-wrap"
+#define NID_id_camellia192_wrap 908
+#define OBJ_id_camellia192_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 3L
+
+#define SN_id_camellia256_wrap "id-camellia256-wrap"
+#define NID_id_camellia256_wrap 909
+#define OBJ_id_camellia256_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 4L
+
+#define SN_anyExtendedKeyUsage "anyExtendedKeyUsage"
+#define LN_anyExtendedKeyUsage "Any Extended Key Usage"
+#define NID_anyExtendedKeyUsage 910
+#define OBJ_anyExtendedKeyUsage 2L, 5L, 29L, 37L, 0L
+
+#define SN_mgf1 "MGF1"
+#define LN_mgf1 "mgf1"
+#define NID_mgf1 911
+#define OBJ_mgf1 1L, 2L, 840L, 113549L, 1L, 1L, 8L
+
+#define SN_rsassaPss "RSASSA-PSS"
+#define LN_rsassaPss "rsassaPss"
+#define NID_rsassaPss 912
+#define OBJ_rsassaPss 1L, 2L, 840L, 113549L, 1L, 1L, 10L
+
+#define SN_aes_128_xts "AES-128-XTS"
+#define LN_aes_128_xts "aes-128-xts"
+#define NID_aes_128_xts 913
+
+#define SN_aes_256_xts "AES-256-XTS"
+#define LN_aes_256_xts "aes-256-xts"
+#define NID_aes_256_xts 914
+
+#define SN_rc4_hmac_md5 "RC4-HMAC-MD5"
+#define LN_rc4_hmac_md5 "rc4-hmac-md5"
+#define NID_rc4_hmac_md5 915
+
+#define SN_aes_128_cbc_hmac_sha1 "AES-128-CBC-HMAC-SHA1"
+#define LN_aes_128_cbc_hmac_sha1 "aes-128-cbc-hmac-sha1"
+#define NID_aes_128_cbc_hmac_sha1 916
+
+#define SN_aes_192_cbc_hmac_sha1 "AES-192-CBC-HMAC-SHA1"
+#define LN_aes_192_cbc_hmac_sha1 "aes-192-cbc-hmac-sha1"
+#define NID_aes_192_cbc_hmac_sha1 917
+
+#define SN_aes_256_cbc_hmac_sha1 "AES-256-CBC-HMAC-SHA1"
+#define LN_aes_256_cbc_hmac_sha1 "aes-256-cbc-hmac-sha1"
+#define NID_aes_256_cbc_hmac_sha1 918
+
+#define SN_rsaesOaep "RSAES-OAEP"
+#define LN_rsaesOaep "rsaesOaep"
+#define NID_rsaesOaep 919
+#define OBJ_rsaesOaep 1L, 2L, 840L, 113549L, 1L, 1L, 7L
+
+#define SN_dhpublicnumber "dhpublicnumber"
+#define LN_dhpublicnumber "X9.42 DH"
+#define NID_dhpublicnumber 920
+#define OBJ_dhpublicnumber 1L, 2L, 840L, 10046L, 2L, 1L
+
+#define SN_brainpoolP160r1 "brainpoolP160r1"
+#define NID_brainpoolP160r1 921
+#define OBJ_brainpoolP160r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 1L
+
+#define SN_brainpoolP160t1 "brainpoolP160t1"
+#define NID_brainpoolP160t1 922
+#define OBJ_brainpoolP160t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 2L
+
+#define SN_brainpoolP192r1 "brainpoolP192r1"
+#define NID_brainpoolP192r1 923
+#define OBJ_brainpoolP192r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 3L
+
+#define SN_brainpoolP192t1 "brainpoolP192t1"
+#define NID_brainpoolP192t1 924
+#define OBJ_brainpoolP192t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 4L
+
+#define SN_brainpoolP224r1 "brainpoolP224r1"
+#define NID_brainpoolP224r1 925
+#define OBJ_brainpoolP224r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 5L
+
+#define SN_brainpoolP224t1 "brainpoolP224t1"
+#define NID_brainpoolP224t1 926
+#define OBJ_brainpoolP224t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 6L
+
+#define SN_brainpoolP256r1 "brainpoolP256r1"
+#define NID_brainpoolP256r1 927
+#define OBJ_brainpoolP256r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 7L
+
+#define SN_brainpoolP256t1 "brainpoolP256t1"
+#define NID_brainpoolP256t1 928
+#define OBJ_brainpoolP256t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 8L
+
+#define SN_brainpoolP320r1 "brainpoolP320r1"
+#define NID_brainpoolP320r1 929
+#define OBJ_brainpoolP320r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 9L
+
+#define SN_brainpoolP320t1 "brainpoolP320t1"
+#define NID_brainpoolP320t1 930
+#define OBJ_brainpoolP320t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 10L
+
+#define SN_brainpoolP384r1 "brainpoolP384r1"
+#define NID_brainpoolP384r1 931
+#define OBJ_brainpoolP384r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 11L
+
+#define SN_brainpoolP384t1 "brainpoolP384t1"
+#define NID_brainpoolP384t1 932
+#define OBJ_brainpoolP384t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 12L
+
+#define SN_brainpoolP512r1 "brainpoolP512r1"
+#define NID_brainpoolP512r1 933
+#define OBJ_brainpoolP512r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 13L
+
+#define SN_brainpoolP512t1 "brainpoolP512t1"
+#define NID_brainpoolP512t1 934
+#define OBJ_brainpoolP512t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 14L
+
+#define SN_pSpecified "PSPECIFIED"
+#define LN_pSpecified "pSpecified"
+#define NID_pSpecified 935
+#define OBJ_pSpecified 1L, 2L, 840L, 113549L, 1L, 1L, 9L
+
+#define SN_dhSinglePass_stdDH_sha1kdf_scheme "dhSinglePass-stdDH-sha1kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha1kdf_scheme 936
+#define OBJ_dhSinglePass_stdDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 2L
+
+#define SN_dhSinglePass_stdDH_sha224kdf_scheme \
+  "dhSinglePass-stdDH-sha224kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha224kdf_scheme 937
+#define OBJ_dhSinglePass_stdDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 11L, 0L
+
+#define SN_dhSinglePass_stdDH_sha256kdf_scheme \
+  "dhSinglePass-stdDH-sha256kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha256kdf_scheme 938
+#define OBJ_dhSinglePass_stdDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 11L, 1L
+
+#define SN_dhSinglePass_stdDH_sha384kdf_scheme \
+  "dhSinglePass-stdDH-sha384kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha384kdf_scheme 939
+#define OBJ_dhSinglePass_stdDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 11L, 2L
+
+#define SN_dhSinglePass_stdDH_sha512kdf_scheme \
+  "dhSinglePass-stdDH-sha512kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha512kdf_scheme 940
+#define OBJ_dhSinglePass_stdDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 11L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  "dhSinglePass-cofactorDH-sha1kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha1kdf_scheme 941
+#define OBJ_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha224kdf_scheme \
+  "dhSinglePass-cofactorDH-sha224kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha224kdf_scheme 942
+#define OBJ_dhSinglePass_cofactorDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 14L, 0L
+
+#define SN_dhSinglePass_cofactorDH_sha256kdf_scheme \
+  "dhSinglePass-cofactorDH-sha256kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha256kdf_scheme 943
+#define OBJ_dhSinglePass_cofactorDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 14L, 1L
+
+#define SN_dhSinglePass_cofactorDH_sha384kdf_scheme \
+  "dhSinglePass-cofactorDH-sha384kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha384kdf_scheme 944
+#define OBJ_dhSinglePass_cofactorDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 14L, 2L
+
+#define SN_dhSinglePass_cofactorDH_sha512kdf_scheme \
+  "dhSinglePass-cofactorDH-sha512kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha512kdf_scheme 945
+#define OBJ_dhSinglePass_cofactorDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 14L, 3L
+
+#define SN_dh_std_kdf "dh-std-kdf"
+#define NID_dh_std_kdf 946
+
+#define SN_dh_cofactor_kdf "dh-cofactor-kdf"
+#define NID_dh_cofactor_kdf 947
+
+#define SN_X25519 "X25519"
+#define NID_X25519 948
+#define OBJ_X25519 1L, 3L, 101L, 110L
+
+#define SN_ED25519 "ED25519"
+#define NID_ED25519 949
+#define OBJ_ED25519 1L, 3L, 101L, 112L
+
+#define SN_chacha20_poly1305 "ChaCha20-Poly1305"
+#define LN_chacha20_poly1305 "chacha20-poly1305"
+#define NID_chacha20_poly1305 950
+
+#define SN_kx_rsa "KxRSA"
+#define LN_kx_rsa "kx-rsa"
+#define NID_kx_rsa 951
+
+#define SN_kx_ecdhe "KxECDHE"
+#define LN_kx_ecdhe "kx-ecdhe"
+#define NID_kx_ecdhe 952
+
+#define SN_kx_psk "KxPSK"
+#define LN_kx_psk "kx-psk"
+#define NID_kx_psk 953
+
+#define SN_auth_rsa "AuthRSA"
+#define LN_auth_rsa "auth-rsa"
+#define NID_auth_rsa 954
+
+#define SN_auth_ecdsa "AuthECDSA"
+#define LN_auth_ecdsa "auth-ecdsa"
+#define NID_auth_ecdsa 955
+
+#define SN_auth_psk "AuthPSK"
+#define LN_auth_psk "auth-psk"
+#define NID_auth_psk 956
+
+#define SN_kx_any "KxANY"
+#define LN_kx_any "kx-any"
+#define NID_kx_any 957
+
+#define SN_auth_any "AuthANY"
+#define LN_auth_any "auth-any"
+#define NID_auth_any 958
+
+#define SN_CECPQ2 "CECPQ2"
+#define NID_CECPQ2 959
+
+#define SN_ED448 "ED448"
+#define NID_ED448 960
+#define OBJ_ED448 1L, 3L, 101L, 113L
+
+#define SN_X448 "X448"
+#define NID_X448 961
+#define OBJ_X448 1L, 3L, 101L, 111L
+
+
+#if defined(__cplusplus)
+} /* extern C */
+#endif
+
+#endif /* OPENSSL_HEADER_NID_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.back
new file mode 100644
index 0000000..a15f4e3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.back	
@@ -0,0 +1,4254 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+/* This file is generated by crypto/obj/objects.go. */
+
+#ifndef OPENSSL_HEADER_NID_H
+#define OPENSSL_HEADER_NID_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* The nid library provides numbered values for ASN.1 object identifiers and
+ * other symbols. These values are used by other libraries to identify
+ * cryptographic primitives.
+ *
+ * A separate objects library, obj.h, provides functions for converting between
+ * nids and object identifiers. However it depends on large internal tables with
+ * the encodings of every nid defined. Consumers concerned with binary size
+ * should instead embed the encodings of the few consumed OIDs and compare
+ * against those.
+ *
+ * These values should not be used outside of a single process; they are not
+ * stable identifiers. */
+
+
+#define SN_undef "UNDEF"
+#define LN_undef "undefined"
+#define NID_undef 0
+#define OBJ_undef 0L
+
+#define SN_rsadsi "rsadsi"
+#define LN_rsadsi "RSA Data Security, Inc."
+#define NID_rsadsi 1
+#define OBJ_rsadsi 1L, 2L, 840L, 113549L
+
+#define SN_pkcs "pkcs"
+#define LN_pkcs "RSA Data Security, Inc. PKCS"
+#define NID_pkcs 2
+#define OBJ_pkcs 1L, 2L, 840L, 113549L, 1L
+
+#define SN_md2 "MD2"
+#define LN_md2 "md2"
+#define NID_md2 3
+#define OBJ_md2 1L, 2L, 840L, 113549L, 2L, 2L
+
+#define SN_md5 "MD5"
+#define LN_md5 "md5"
+#define NID_md5 4
+#define OBJ_md5 1L, 2L, 840L, 113549L, 2L, 5L
+
+#define SN_rc4 "RC4"
+#define LN_rc4 "rc4"
+#define NID_rc4 5
+#define OBJ_rc4 1L, 2L, 840L, 113549L, 3L, 4L
+
+#define LN_rsaEncryption "rsaEncryption"
+#define NID_rsaEncryption 6
+#define OBJ_rsaEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 1L
+
+#define SN_md2WithRSAEncryption "RSA-MD2"
+#define LN_md2WithRSAEncryption "md2WithRSAEncryption"
+#define NID_md2WithRSAEncryption 7
+#define OBJ_md2WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 2L
+
+#define SN_md5WithRSAEncryption "RSA-MD5"
+#define LN_md5WithRSAEncryption "md5WithRSAEncryption"
+#define NID_md5WithRSAEncryption 8
+#define OBJ_md5WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 4L
+
+#define SN_pbeWithMD2AndDES_CBC "PBE-MD2-DES"
+#define LN_pbeWithMD2AndDES_CBC "pbeWithMD2AndDES-CBC"
+#define NID_pbeWithMD2AndDES_CBC 9
+#define OBJ_pbeWithMD2AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 1L
+
+#define SN_pbeWithMD5AndDES_CBC "PBE-MD5-DES"
+#define LN_pbeWithMD5AndDES_CBC "pbeWithMD5AndDES-CBC"
+#define NID_pbeWithMD5AndDES_CBC 10
+#define OBJ_pbeWithMD5AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 3L
+
+#define SN_X500 "X500"
+#define LN_X500 "directory services (X.500)"
+#define NID_X500 11
+#define OBJ_X500 2L, 5L
+
+#define SN_X509 "X509"
+#define NID_X509 12
+#define OBJ_X509 2L, 5L, 4L
+
+#define SN_commonName "CN"
+#define LN_commonName "commonName"
+#define NID_commonName 13
+#define OBJ_commonName 2L, 5L, 4L, 3L
+
+#define SN_countryName "C"
+#define LN_countryName "countryName"
+#define NID_countryName 14
+#define OBJ_countryName 2L, 5L, 4L, 6L
+
+#define SN_localityName "L"
+#define LN_localityName "localityName"
+#define NID_localityName 15
+#define OBJ_localityName 2L, 5L, 4L, 7L
+
+#define SN_stateOrProvinceName "ST"
+#define LN_stateOrProvinceName "stateOrProvinceName"
+#define NID_stateOrProvinceName 16
+#define OBJ_stateOrProvinceName 2L, 5L, 4L, 8L
+
+#define SN_organizationName "O"
+#define LN_organizationName "organizationName"
+#define NID_organizationName 17
+#define OBJ_organizationName 2L, 5L, 4L, 10L
+
+#define SN_organizationalUnitName "OU"
+#define LN_organizationalUnitName "organizationalUnitName"
+#define NID_organizationalUnitName 18
+#define OBJ_organizationalUnitName 2L, 5L, 4L, 11L
+
+#define SN_rsa "RSA"
+#define LN_rsa "rsa"
+#define NID_rsa 19
+#define OBJ_rsa 2L, 5L, 8L, 1L, 1L
+
+#define SN_pkcs7 "pkcs7"
+#define NID_pkcs7 20
+#define OBJ_pkcs7 1L, 2L, 840L, 113549L, 1L, 7L
+
+#define LN_pkcs7_data "pkcs7-data"
+#define NID_pkcs7_data 21
+#define OBJ_pkcs7_data 1L, 2L, 840L, 113549L, 1L, 7L, 1L
+
+#define LN_pkcs7_signed "pkcs7-signedData"
+#define NID_pkcs7_signed 22
+#define OBJ_pkcs7_signed 1L, 2L, 840L, 113549L, 1L, 7L, 2L
+
+#define LN_pkcs7_enveloped "pkcs7-envelopedData"
+#define NID_pkcs7_enveloped 23
+#define OBJ_pkcs7_enveloped 1L, 2L, 840L, 113549L, 1L, 7L, 3L
+
+#define LN_pkcs7_signedAndEnveloped "pkcs7-signedAndEnvelopedData"
+#define NID_pkcs7_signedAndEnveloped 24
+#define OBJ_pkcs7_signedAndEnveloped 1L, 2L, 840L, 113549L, 1L, 7L, 4L
+
+#define LN_pkcs7_digest "pkcs7-digestData"
+#define NID_pkcs7_digest 25
+#define OBJ_pkcs7_digest 1L, 2L, 840L, 113549L, 1L, 7L, 5L
+
+#define LN_pkcs7_encrypted "pkcs7-encryptedData"
+#define NID_pkcs7_encrypted 26
+#define OBJ_pkcs7_encrypted 1L, 2L, 840L, 113549L, 1L, 7L, 6L
+
+#define SN_pkcs3 "pkcs3"
+#define NID_pkcs3 27
+#define OBJ_pkcs3 1L, 2L, 840L, 113549L, 1L, 3L
+
+#define LN_dhKeyAgreement "dhKeyAgreement"
+#define NID_dhKeyAgreement 28
+#define OBJ_dhKeyAgreement 1L, 2L, 840L, 113549L, 1L, 3L, 1L
+
+#define SN_des_ecb "DES-ECB"
+#define LN_des_ecb "des-ecb"
+#define NID_des_ecb 29
+#define OBJ_des_ecb 1L, 3L, 14L, 3L, 2L, 6L
+
+#define SN_des_cfb64 "DES-CFB"
+#define LN_des_cfb64 "des-cfb"
+#define NID_des_cfb64 30
+#define OBJ_des_cfb64 1L, 3L, 14L, 3L, 2L, 9L
+
+#define SN_des_cbc "DES-CBC"
+#define LN_des_cbc "des-cbc"
+#define NID_des_cbc 31
+#define OBJ_des_cbc 1L, 3L, 14L, 3L, 2L, 7L
+
+#define SN_des_ede_ecb "DES-EDE"
+#define LN_des_ede_ecb "des-ede"
+#define NID_des_ede_ecb 32
+#define OBJ_des_ede_ecb 1L, 3L, 14L, 3L, 2L, 17L
+
+#define SN_des_ede3_ecb "DES-EDE3"
+#define LN_des_ede3_ecb "des-ede3"
+#define NID_des_ede3_ecb 33
+
+#define SN_idea_cbc "IDEA-CBC"
+#define LN_idea_cbc "idea-cbc"
+#define NID_idea_cbc 34
+#define OBJ_idea_cbc 1L, 3L, 6L, 1L, 4L, 1L, 188L, 7L, 1L, 1L, 2L
+
+#define SN_idea_cfb64 "IDEA-CFB"
+#define LN_idea_cfb64 "idea-cfb"
+#define NID_idea_cfb64 35
+
+#define SN_idea_ecb "IDEA-ECB"
+#define LN_idea_ecb "idea-ecb"
+#define NID_idea_ecb 36
+
+#define SN_rc2_cbc "RC2-CBC"
+#define LN_rc2_cbc "rc2-cbc"
+#define NID_rc2_cbc 37
+#define OBJ_rc2_cbc 1L, 2L, 840L, 113549L, 3L, 2L
+
+#define SN_rc2_ecb "RC2-ECB"
+#define LN_rc2_ecb "rc2-ecb"
+#define NID_rc2_ecb 38
+
+#define SN_rc2_cfb64 "RC2-CFB"
+#define LN_rc2_cfb64 "rc2-cfb"
+#define NID_rc2_cfb64 39
+
+#define SN_rc2_ofb64 "RC2-OFB"
+#define LN_rc2_ofb64 "rc2-ofb"
+#define NID_rc2_ofb64 40
+
+#define SN_sha "SHA"
+#define LN_sha "sha"
+#define NID_sha 41
+#define OBJ_sha 1L, 3L, 14L, 3L, 2L, 18L
+
+#define SN_shaWithRSAEncryption "RSA-SHA"
+#define LN_shaWithRSAEncryption "shaWithRSAEncryption"
+#define NID_shaWithRSAEncryption 42
+#define OBJ_shaWithRSAEncryption 1L, 3L, 14L, 3L, 2L, 15L
+
+#define SN_des_ede_cbc "DES-EDE-CBC"
+#define LN_des_ede_cbc "des-ede-cbc"
+#define NID_des_ede_cbc 43
+
+#define SN_des_ede3_cbc "DES-EDE3-CBC"
+#define LN_des_ede3_cbc "des-ede3-cbc"
+#define NID_des_ede3_cbc 44
+#define OBJ_des_ede3_cbc 1L, 2L, 840L, 113549L, 3L, 7L
+
+#define SN_des_ofb64 "DES-OFB"
+#define LN_des_ofb64 "des-ofb"
+#define NID_des_ofb64 45
+#define OBJ_des_ofb64 1L, 3L, 14L, 3L, 2L, 8L
+
+#define SN_idea_ofb64 "IDEA-OFB"
+#define LN_idea_ofb64 "idea-ofb"
+#define NID_idea_ofb64 46
+
+#define SN_pkcs9 "pkcs9"
+#define NID_pkcs9 47
+#define OBJ_pkcs9 1L, 2L, 840L, 113549L, 1L, 9L
+
+#define LN_pkcs9_emailAddress "emailAddress"
+#define NID_pkcs9_emailAddress 48
+#define OBJ_pkcs9_emailAddress 1L, 2L, 840L, 113549L, 1L, 9L, 1L
+
+#define LN_pkcs9_unstructuredName "unstructuredName"
+#define NID_pkcs9_unstructuredName 49
+#define OBJ_pkcs9_unstructuredName 1L, 2L, 840L, 113549L, 1L, 9L, 2L
+
+#define LN_pkcs9_contentType "contentType"
+#define NID_pkcs9_contentType 50
+#define OBJ_pkcs9_contentType 1L, 2L, 840L, 113549L, 1L, 9L, 3L
+
+#define LN_pkcs9_messageDigest "messageDigest"
+#define NID_pkcs9_messageDigest 51
+#define OBJ_pkcs9_messageDigest 1L, 2L, 840L, 113549L, 1L, 9L, 4L
+
+#define LN_pkcs9_signingTime "signingTime"
+#define NID_pkcs9_signingTime 52
+#define OBJ_pkcs9_signingTime 1L, 2L, 840L, 113549L, 1L, 9L, 5L
+
+#define LN_pkcs9_countersignature "countersignature"
+#define NID_pkcs9_countersignature 53
+#define OBJ_pkcs9_countersignature 1L, 2L, 840L, 113549L, 1L, 9L, 6L
+
+#define LN_pkcs9_challengePassword "challengePassword"
+#define NID_pkcs9_challengePassword 54
+#define OBJ_pkcs9_challengePassword 1L, 2L, 840L, 113549L, 1L, 9L, 7L
+
+#define LN_pkcs9_unstructuredAddress "unstructuredAddress"
+#define NID_pkcs9_unstructuredAddress 55
+#define OBJ_pkcs9_unstructuredAddress 1L, 2L, 840L, 113549L, 1L, 9L, 8L
+
+#define LN_pkcs9_extCertAttributes "extendedCertificateAttributes"
+#define NID_pkcs9_extCertAttributes 56
+#define OBJ_pkcs9_extCertAttributes 1L, 2L, 840L, 113549L, 1L, 9L, 9L
+
+#define SN_netscape "Netscape"
+#define LN_netscape "Netscape Communications Corp."
+#define NID_netscape 57
+#define OBJ_netscape 2L, 16L, 840L, 1L, 113730L
+
+#define SN_netscape_cert_extension "nsCertExt"
+#define LN_netscape_cert_extension "Netscape Certificate Extension"
+#define NID_netscape_cert_extension 58
+#define OBJ_netscape_cert_extension 2L, 16L, 840L, 1L, 113730L, 1L
+
+#define SN_netscape_data_type "nsDataType"
+#define LN_netscape_data_type "Netscape Data Type"
+#define NID_netscape_data_type 59
+#define OBJ_netscape_data_type 2L, 16L, 840L, 1L, 113730L, 2L
+
+#define SN_des_ede_cfb64 "DES-EDE-CFB"
+#define LN_des_ede_cfb64 "des-ede-cfb"
+#define NID_des_ede_cfb64 60
+
+#define SN_des_ede3_cfb64 "DES-EDE3-CFB"
+#define LN_des_ede3_cfb64 "des-ede3-cfb"
+#define NID_des_ede3_cfb64 61
+
+#define SN_des_ede_ofb64 "DES-EDE-OFB"
+#define LN_des_ede_ofb64 "des-ede-ofb"
+#define NID_des_ede_ofb64 62
+
+#define SN_des_ede3_ofb64 "DES-EDE3-OFB"
+#define LN_des_ede3_ofb64 "des-ede3-ofb"
+#define NID_des_ede3_ofb64 63
+
+#define SN_sha1 "SHA1"
+#define LN_sha1 "sha1"
+#define NID_sha1 64
+#define OBJ_sha1 1L, 3L, 14L, 3L, 2L, 26L
+
+#define SN_sha1WithRSAEncryption "RSA-SHA1"
+#define LN_sha1WithRSAEncryption "sha1WithRSAEncryption"
+#define NID_sha1WithRSAEncryption 65
+#define OBJ_sha1WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 5L
+
+#define SN_dsaWithSHA "DSA-SHA"
+#define LN_dsaWithSHA "dsaWithSHA"
+#define NID_dsaWithSHA 66
+#define OBJ_dsaWithSHA 1L, 3L, 14L, 3L, 2L, 13L
+
+#define SN_dsa_2 "DSA-old"
+#define LN_dsa_2 "dsaEncryption-old"
+#define NID_dsa_2 67
+#define OBJ_dsa_2 1L, 3L, 14L, 3L, 2L, 12L
+
+#define SN_pbeWithSHA1AndRC2_CBC "PBE-SHA1-RC2-64"
+#define LN_pbeWithSHA1AndRC2_CBC "pbeWithSHA1AndRC2-CBC"
+#define NID_pbeWithSHA1AndRC2_CBC 68
+#define OBJ_pbeWithSHA1AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 11L
+
+#define LN_id_pbkdf2 "PBKDF2"
+#define NID_id_pbkdf2 69
+#define OBJ_id_pbkdf2 1L, 2L, 840L, 113549L, 1L, 5L, 12L
+
+#define SN_dsaWithSHA1_2 "DSA-SHA1-old"
+#define LN_dsaWithSHA1_2 "dsaWithSHA1-old"
+#define NID_dsaWithSHA1_2 70
+#define OBJ_dsaWithSHA1_2 1L, 3L, 14L, 3L, 2L, 27L
+
+#define SN_netscape_cert_type "nsCertType"
+#define LN_netscape_cert_type "Netscape Cert Type"
+#define NID_netscape_cert_type 71
+#define OBJ_netscape_cert_type 2L, 16L, 840L, 1L, 113730L, 1L, 1L
+
+#define SN_netscape_base_url "nsBaseUrl"
+#define LN_netscape_base_url "Netscape Base Url"
+#define NID_netscape_base_url 72
+#define OBJ_netscape_base_url 2L, 16L, 840L, 1L, 113730L, 1L, 2L
+
+#define SN_netscape_revocation_url "nsRevocationUrl"
+#define LN_netscape_revocation_url "Netscape Revocation Url"
+#define NID_netscape_revocation_url 73
+#define OBJ_netscape_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 3L
+
+#define SN_netscape_ca_revocation_url "nsCaRevocationUrl"
+#define LN_netscape_ca_revocation_url "Netscape CA Revocation Url"
+#define NID_netscape_ca_revocation_url 74
+#define OBJ_netscape_ca_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 4L
+
+#define SN_netscape_renewal_url "nsRenewalUrl"
+#define LN_netscape_renewal_url "Netscape Renewal Url"
+#define NID_netscape_renewal_url 75
+#define OBJ_netscape_renewal_url 2L, 16L, 840L, 1L, 113730L, 1L, 7L
+
+#define SN_netscape_ca_policy_url "nsCaPolicyUrl"
+#define LN_netscape_ca_policy_url "Netscape CA Policy Url"
+#define NID_netscape_ca_policy_url 76
+#define OBJ_netscape_ca_policy_url 2L, 16L, 840L, 1L, 113730L, 1L, 8L
+
+#define SN_netscape_ssl_server_name "nsSslServerName"
+#define LN_netscape_ssl_server_name "Netscape SSL Server Name"
+#define NID_netscape_ssl_server_name 77
+#define OBJ_netscape_ssl_server_name 2L, 16L, 840L, 1L, 113730L, 1L, 12L
+
+#define SN_netscape_comment "nsComment"
+#define LN_netscape_comment "Netscape Comment"
+#define NID_netscape_comment 78
+#define OBJ_netscape_comment 2L, 16L, 840L, 1L, 113730L, 1L, 13L
+
+#define SN_netscape_cert_sequence "nsCertSequence"
+#define LN_netscape_cert_sequence "Netscape Certificate Sequence"
+#define NID_netscape_cert_sequence 79
+#define OBJ_netscape_cert_sequence 2L, 16L, 840L, 1L, 113730L, 2L, 5L
+
+#define SN_desx_cbc "DESX-CBC"
+#define LN_desx_cbc "desx-cbc"
+#define NID_desx_cbc 80
+
+#define SN_id_ce "id-ce"
+#define NID_id_ce 81
+#define OBJ_id_ce 2L, 5L, 29L
+
+#define SN_subject_key_identifier "subjectKeyIdentifier"
+#define LN_subject_key_identifier "X509v3 Subject Key Identifier"
+#define NID_subject_key_identifier 82
+#define OBJ_subject_key_identifier 2L, 5L, 29L, 14L
+
+#define SN_key_usage "keyUsage"
+#define LN_key_usage "X509v3 Key Usage"
+#define NID_key_usage 83
+#define OBJ_key_usage 2L, 5L, 29L, 15L
+
+#define SN_private_key_usage_period "privateKeyUsagePeriod"
+#define LN_private_key_usage_period "X509v3 Private Key Usage Period"
+#define NID_private_key_usage_period 84
+#define OBJ_private_key_usage_period 2L, 5L, 29L, 16L
+
+#define SN_subject_alt_name "subjectAltName"
+#define LN_subject_alt_name "X509v3 Subject Alternative Name"
+#define NID_subject_alt_name 85
+#define OBJ_subject_alt_name 2L, 5L, 29L, 17L
+
+#define SN_issuer_alt_name "issuerAltName"
+#define LN_issuer_alt_name "X509v3 Issuer Alternative Name"
+#define NID_issuer_alt_name 86
+#define OBJ_issuer_alt_name 2L, 5L, 29L, 18L
+
+#define SN_basic_constraints "basicConstraints"
+#define LN_basic_constraints "X509v3 Basic Constraints"
+#define NID_basic_constraints 87
+#define OBJ_basic_constraints 2L, 5L, 29L, 19L
+
+#define SN_crl_number "crlNumber"
+#define LN_crl_number "X509v3 CRL Number"
+#define NID_crl_number 88
+#define OBJ_crl_number 2L, 5L, 29L, 20L
+
+#define SN_certificate_policies "certificatePolicies"
+#define LN_certificate_policies "X509v3 Certificate Policies"
+#define NID_certificate_policies 89
+#define OBJ_certificate_policies 2L, 5L, 29L, 32L
+
+#define SN_authority_key_identifier "authorityKeyIdentifier"
+#define LN_authority_key_identifier "X509v3 Authority Key Identifier"
+#define NID_authority_key_identifier 90
+#define OBJ_authority_key_identifier 2L, 5L, 29L, 35L
+
+#define SN_bf_cbc "BF-CBC"
+#define LN_bf_cbc "bf-cbc"
+#define NID_bf_cbc 91
+#define OBJ_bf_cbc 1L, 3L, 6L, 1L, 4L, 1L, 3029L, 1L, 2L
+
+#define SN_bf_ecb "BF-ECB"
+#define LN_bf_ecb "bf-ecb"
+#define NID_bf_ecb 92
+
+#define SN_bf_cfb64 "BF-CFB"
+#define LN_bf_cfb64 "bf-cfb"
+#define NID_bf_cfb64 93
+
+#define SN_bf_ofb64 "BF-OFB"
+#define LN_bf_ofb64 "bf-ofb"
+#define NID_bf_ofb64 94
+
+#define SN_mdc2 "MDC2"
+#define LN_mdc2 "mdc2"
+#define NID_mdc2 95
+#define OBJ_mdc2 2L, 5L, 8L, 3L, 101L
+
+#define SN_mdc2WithRSA "RSA-MDC2"
+#define LN_mdc2WithRSA "mdc2WithRSA"
+#define NID_mdc2WithRSA 96
+#define OBJ_mdc2WithRSA 2L, 5L, 8L, 3L, 100L
+
+#define SN_rc4_40 "RC4-40"
+#define LN_rc4_40 "rc4-40"
+#define NID_rc4_40 97
+
+#define SN_rc2_40_cbc "RC2-40-CBC"
+#define LN_rc2_40_cbc "rc2-40-cbc"
+#define NID_rc2_40_cbc 98
+
+#define SN_givenName "GN"
+#define LN_givenName "givenName"
+#define NID_givenName 99
+#define OBJ_givenName 2L, 5L, 4L, 42L
+
+#define SN_surname "SN"
+#define LN_surname "surname"
+#define NID_surname 100
+#define OBJ_surname 2L, 5L, 4L, 4L
+
+#define SN_initials "initials"
+#define LN_initials "initials"
+#define NID_initials 101
+#define OBJ_initials 2L, 5L, 4L, 43L
+
+#define SN_crl_distribution_points "crlDistributionPoints"
+#define LN_crl_distribution_points "X509v3 CRL Distribution Points"
+#define NID_crl_distribution_points 103
+#define OBJ_crl_distribution_points 2L, 5L, 29L, 31L
+
+#define SN_md5WithRSA "RSA-NP-MD5"
+#define LN_md5WithRSA "md5WithRSA"
+#define NID_md5WithRSA 104
+#define OBJ_md5WithRSA 1L, 3L, 14L, 3L, 2L, 3L
+
+#define LN_serialNumber "serialNumber"
+#define NID_serialNumber 105
+#define OBJ_serialNumber 2L, 5L, 4L, 5L
+
+#define SN_title "title"
+#define LN_title "title"
+#define NID_title 106
+#define OBJ_title 2L, 5L, 4L, 12L
+
+#define LN_description "description"
+#define NID_description 107
+#define OBJ_description 2L, 5L, 4L, 13L
+
+#define SN_cast5_cbc "CAST5-CBC"
+#define LN_cast5_cbc "cast5-cbc"
+#define NID_cast5_cbc 108
+#define OBJ_cast5_cbc 1L, 2L, 840L, 113533L, 7L, 66L, 10L
+
+#define SN_cast5_ecb "CAST5-ECB"
+#define LN_cast5_ecb "cast5-ecb"
+#define NID_cast5_ecb 109
+
+#define SN_cast5_cfb64 "CAST5-CFB"
+#define LN_cast5_cfb64 "cast5-cfb"
+#define NID_cast5_cfb64 110
+
+#define SN_cast5_ofb64 "CAST5-OFB"
+#define LN_cast5_ofb64 "cast5-ofb"
+#define NID_cast5_ofb64 111
+
+#define LN_pbeWithMD5AndCast5_CBC "pbeWithMD5AndCast5CBC"
+#define NID_pbeWithMD5AndCast5_CBC 112
+#define OBJ_pbeWithMD5AndCast5_CBC 1L, 2L, 840L, 113533L, 7L, 66L, 12L
+
+#define SN_dsaWithSHA1 "DSA-SHA1"
+#define LN_dsaWithSHA1 "dsaWithSHA1"
+#define NID_dsaWithSHA1 113
+#define OBJ_dsaWithSHA1 1L, 2L, 840L, 10040L, 4L, 3L
+
+#define SN_md5_sha1 "MD5-SHA1"
+#define LN_md5_sha1 "md5-sha1"
+#define NID_md5_sha1 114
+
+#define SN_sha1WithRSA "RSA-SHA1-2"
+#define LN_sha1WithRSA "sha1WithRSA"
+#define NID_sha1WithRSA 115
+#define OBJ_sha1WithRSA 1L, 3L, 14L, 3L, 2L, 29L
+
+#define SN_dsa "DSA"
+#define LN_dsa "dsaEncryption"
+#define NID_dsa 116
+#define OBJ_dsa 1L, 2L, 840L, 10040L, 4L, 1L
+
+#define SN_ripemd160 "RIPEMD160"
+#define LN_ripemd160 "ripemd160"
+#define NID_ripemd160 117
+#define OBJ_ripemd160 1L, 3L, 36L, 3L, 2L, 1L
+
+#define SN_ripemd160WithRSA "RSA-RIPEMD160"
+#define LN_ripemd160WithRSA "ripemd160WithRSA"
+#define NID_ripemd160WithRSA 119
+#define OBJ_ripemd160WithRSA 1L, 3L, 36L, 3L, 3L, 1L, 2L
+
+#define SN_rc5_cbc "RC5-CBC"
+#define LN_rc5_cbc "rc5-cbc"
+#define NID_rc5_cbc 120
+#define OBJ_rc5_cbc 1L, 2L, 840L, 113549L, 3L, 8L
+
+#define SN_rc5_ecb "RC5-ECB"
+#define LN_rc5_ecb "rc5-ecb"
+#define NID_rc5_ecb 121
+
+#define SN_rc5_cfb64 "RC5-CFB"
+#define LN_rc5_cfb64 "rc5-cfb"
+#define NID_rc5_cfb64 122
+
+#define SN_rc5_ofb64 "RC5-OFB"
+#define LN_rc5_ofb64 "rc5-ofb"
+#define NID_rc5_ofb64 123
+
+#define SN_zlib_compression "ZLIB"
+#define LN_zlib_compression "zlib compression"
+#define NID_zlib_compression 125
+#define OBJ_zlib_compression 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 8L
+
+#define SN_ext_key_usage "extendedKeyUsage"
+#define LN_ext_key_usage "X509v3 Extended Key Usage"
+#define NID_ext_key_usage 126
+#define OBJ_ext_key_usage 2L, 5L, 29L, 37L
+
+#define SN_id_pkix "PKIX"
+#define NID_id_pkix 127
+#define OBJ_id_pkix 1L, 3L, 6L, 1L, 5L, 5L, 7L
+
+#define SN_id_kp "id-kp"
+#define NID_id_kp 128
+#define OBJ_id_kp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L
+
+#define SN_server_auth "serverAuth"
+#define LN_server_auth "TLS Web Server Authentication"
+#define NID_server_auth 129
+#define OBJ_server_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 1L
+
+#define SN_client_auth "clientAuth"
+#define LN_client_auth "TLS Web Client Authentication"
+#define NID_client_auth 130
+#define OBJ_client_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 2L
+
+#define SN_code_sign "codeSigning"
+#define LN_code_sign "Code Signing"
+#define NID_code_sign 131
+#define OBJ_code_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 3L
+
+#define SN_email_protect "emailProtection"
+#define LN_email_protect "E-mail Protection"
+#define NID_email_protect 132
+#define OBJ_email_protect 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 4L
+
+#define SN_time_stamp "timeStamping"
+#define LN_time_stamp "Time Stamping"
+#define NID_time_stamp 133
+#define OBJ_time_stamp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 8L
+
+#define SN_ms_code_ind "msCodeInd"
+#define LN_ms_code_ind "Microsoft Individual Code Signing"
+#define NID_ms_code_ind 134
+#define OBJ_ms_code_ind 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 21L
+
+#define SN_ms_code_com "msCodeCom"
+#define LN_ms_code_com "Microsoft Commercial Code Signing"
+#define NID_ms_code_com 135
+#define OBJ_ms_code_com 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 22L
+
+#define SN_ms_ctl_sign "msCTLSign"
+#define LN_ms_ctl_sign "Microsoft Trust List Signing"
+#define NID_ms_ctl_sign 136
+#define OBJ_ms_ctl_sign 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 1L
+
+#define SN_ms_sgc "msSGC"
+#define LN_ms_sgc "Microsoft Server Gated Crypto"
+#define NID_ms_sgc 137
+#define OBJ_ms_sgc 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 3L
+
+#define SN_ms_efs "msEFS"
+#define LN_ms_efs "Microsoft Encrypted File System"
+#define NID_ms_efs 138
+#define OBJ_ms_efs 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 4L
+
+#define SN_ns_sgc "nsSGC"
+#define LN_ns_sgc "Netscape Server Gated Crypto"
+#define NID_ns_sgc 139
+#define OBJ_ns_sgc 2L, 16L, 840L, 1L, 113730L, 4L, 1L
+
+#define SN_delta_crl "deltaCRL"
+#define LN_delta_crl "X509v3 Delta CRL Indicator"
+#define NID_delta_crl 140
+#define OBJ_delta_crl 2L, 5L, 29L, 27L
+
+#define SN_crl_reason "CRLReason"
+#define LN_crl_reason "X509v3 CRL Reason Code"
+#define NID_crl_reason 141
+#define OBJ_crl_reason 2L, 5L, 29L, 21L
+
+#define SN_invalidity_date "invalidityDate"
+#define LN_invalidity_date "Invalidity Date"
+#define NID_invalidity_date 142
+#define OBJ_invalidity_date 2L, 5L, 29L, 24L
+
+#define SN_sxnet "SXNetID"
+#define LN_sxnet "Strong Extranet ID"
+#define NID_sxnet 143
+#define OBJ_sxnet 1L, 3L, 101L, 1L, 4L, 1L
+
+#define SN_pbe_WithSHA1And128BitRC4 "PBE-SHA1-RC4-128"
+#define LN_pbe_WithSHA1And128BitRC4 "pbeWithSHA1And128BitRC4"
+#define NID_pbe_WithSHA1And128BitRC4 144
+#define OBJ_pbe_WithSHA1And128BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 1L
+
+#define SN_pbe_WithSHA1And40BitRC4 "PBE-SHA1-RC4-40"
+#define LN_pbe_WithSHA1And40BitRC4 "pbeWithSHA1And40BitRC4"
+#define NID_pbe_WithSHA1And40BitRC4 145
+#define OBJ_pbe_WithSHA1And40BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 2L
+
+#define SN_pbe_WithSHA1And3_Key_TripleDES_CBC "PBE-SHA1-3DES"
+#define LN_pbe_WithSHA1And3_Key_TripleDES_CBC "pbeWithSHA1And3-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And3_Key_TripleDES_CBC 146
+#define OBJ_pbe_WithSHA1And3_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 3L
+
+#define SN_pbe_WithSHA1And2_Key_TripleDES_CBC "PBE-SHA1-2DES"
+#define LN_pbe_WithSHA1And2_Key_TripleDES_CBC "pbeWithSHA1And2-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And2_Key_TripleDES_CBC 147
+#define OBJ_pbe_WithSHA1And2_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 4L
+
+#define SN_pbe_WithSHA1And128BitRC2_CBC "PBE-SHA1-RC2-128"
+#define LN_pbe_WithSHA1And128BitRC2_CBC "pbeWithSHA1And128BitRC2-CBC"
+#define NID_pbe_WithSHA1And128BitRC2_CBC 148
+#define OBJ_pbe_WithSHA1And128BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 5L
+
+#define SN_pbe_WithSHA1And40BitRC2_CBC "PBE-SHA1-RC2-40"
+#define LN_pbe_WithSHA1And40BitRC2_CBC "pbeWithSHA1And40BitRC2-CBC"
+#define NID_pbe_WithSHA1And40BitRC2_CBC 149
+#define OBJ_pbe_WithSHA1And40BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 6L
+
+#define LN_keyBag "keyBag"
+#define NID_keyBag 150
+#define OBJ_keyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 1L
+
+#define LN_pkcs8ShroudedKeyBag "pkcs8ShroudedKeyBag"
+#define NID_pkcs8ShroudedKeyBag 151
+#define OBJ_pkcs8ShroudedKeyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 2L
+
+#define LN_certBag "certBag"
+#define NID_certBag 152
+#define OBJ_certBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 3L
+
+#define LN_crlBag "crlBag"
+#define NID_crlBag 153
+#define OBJ_crlBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 4L
+
+#define LN_secretBag "secretBag"
+#define NID_secretBag 154
+#define OBJ_secretBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 5L
+
+#define LN_safeContentsBag "safeContentsBag"
+#define NID_safeContentsBag 155
+#define OBJ_safeContentsBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 6L
+
+#define LN_friendlyName "friendlyName"
+#define NID_friendlyName 156
+#define OBJ_friendlyName 1L, 2L, 840L, 113549L, 1L, 9L, 20L
+
+#define LN_localKeyID "localKeyID"
+#define NID_localKeyID 157
+#define OBJ_localKeyID 1L, 2L, 840L, 113549L, 1L, 9L, 21L
+
+#define LN_x509Certificate "x509Certificate"
+#define NID_x509Certificate 158
+#define OBJ_x509Certificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 1L
+
+#define LN_sdsiCertificate "sdsiCertificate"
+#define NID_sdsiCertificate 159
+#define OBJ_sdsiCertificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 2L
+
+#define LN_x509Crl "x509Crl"
+#define NID_x509Crl 160
+#define OBJ_x509Crl 1L, 2L, 840L, 113549L, 1L, 9L, 23L, 1L
+
+#define LN_pbes2 "PBES2"
+#define NID_pbes2 161
+#define OBJ_pbes2 1L, 2L, 840L, 113549L, 1L, 5L, 13L
+
+#define LN_pbmac1 "PBMAC1"
+#define NID_pbmac1 162
+#define OBJ_pbmac1 1L, 2L, 840L, 113549L, 1L, 5L, 14L
+
+#define LN_hmacWithSHA1 "hmacWithSHA1"
+#define NID_hmacWithSHA1 163
+#define OBJ_hmacWithSHA1 1L, 2L, 840L, 113549L, 2L, 7L
+
+#define SN_id_qt_cps "id-qt-cps"
+#define LN_id_qt_cps "Policy Qualifier CPS"
+#define NID_id_qt_cps 164
+#define OBJ_id_qt_cps 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 1L
+
+#define SN_id_qt_unotice "id-qt-unotice"
+#define LN_id_qt_unotice "Policy Qualifier User Notice"
+#define NID_id_qt_unotice 165
+#define OBJ_id_qt_unotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 2L
+
+#define SN_rc2_64_cbc "RC2-64-CBC"
+#define LN_rc2_64_cbc "rc2-64-cbc"
+#define NID_rc2_64_cbc 166
+
+#define SN_SMIMECapabilities "SMIME-CAPS"
+#define LN_SMIMECapabilities "S/MIME Capabilities"
+#define NID_SMIMECapabilities 167
+#define OBJ_SMIMECapabilities 1L, 2L, 840L, 113549L, 1L, 9L, 15L
+
+#define SN_pbeWithMD2AndRC2_CBC "PBE-MD2-RC2-64"
+#define LN_pbeWithMD2AndRC2_CBC "pbeWithMD2AndRC2-CBC"
+#define NID_pbeWithMD2AndRC2_CBC 168
+#define OBJ_pbeWithMD2AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 4L
+
+#define SN_pbeWithMD5AndRC2_CBC "PBE-MD5-RC2-64"
+#define LN_pbeWithMD5AndRC2_CBC "pbeWithMD5AndRC2-CBC"
+#define NID_pbeWithMD5AndRC2_CBC 169
+#define OBJ_pbeWithMD5AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 6L
+
+#define SN_pbeWithSHA1AndDES_CBC "PBE-SHA1-DES"
+#define LN_pbeWithSHA1AndDES_CBC "pbeWithSHA1AndDES-CBC"
+#define NID_pbeWithSHA1AndDES_CBC 170
+#define OBJ_pbeWithSHA1AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 10L
+
+#define SN_ms_ext_req "msExtReq"
+#define LN_ms_ext_req "Microsoft Extension Request"
+#define NID_ms_ext_req 171
+#define OBJ_ms_ext_req 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 14L
+
+#define SN_ext_req "extReq"
+#define LN_ext_req "Extension Request"
+#define NID_ext_req 172
+#define OBJ_ext_req 1L, 2L, 840L, 113549L, 1L, 9L, 14L
+
+#define SN_name "name"
+#define LN_name "name"
+#define NID_name 173
+#define OBJ_name 2L, 5L, 4L, 41L
+
+#define SN_dnQualifier "dnQualifier"
+#define LN_dnQualifier "dnQualifier"
+#define NID_dnQualifier 174
+#define OBJ_dnQualifier 2L, 5L, 4L, 46L
+
+#define SN_id_pe "id-pe"
+#define NID_id_pe 175
+#define OBJ_id_pe 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L
+
+#define SN_id_ad "id-ad"
+#define NID_id_ad 176
+#define OBJ_id_ad 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L
+
+#define SN_info_access "authorityInfoAccess"
+#define LN_info_access "Authority Information Access"
+#define NID_info_access 177
+#define OBJ_info_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 1L
+
+#define SN_ad_OCSP "OCSP"
+#define LN_ad_OCSP "OCSP"
+#define NID_ad_OCSP 178
+#define OBJ_ad_OCSP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L
+
+#define SN_ad_ca_issuers "caIssuers"
+#define LN_ad_ca_issuers "CA Issuers"
+#define NID_ad_ca_issuers 179
+#define OBJ_ad_ca_issuers 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 2L
+
+#define SN_OCSP_sign "OCSPSigning"
+#define LN_OCSP_sign "OCSP Signing"
+#define NID_OCSP_sign 180
+#define OBJ_OCSP_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 9L
+
+#define SN_iso "ISO"
+#define LN_iso "iso"
+#define NID_iso 181
+#define OBJ_iso 1L
+
+#define SN_member_body "member-body"
+#define LN_member_body "ISO Member Body"
+#define NID_member_body 182
+#define OBJ_member_body 1L, 2L
+
+#define SN_ISO_US "ISO-US"
+#define LN_ISO_US "ISO US Member Body"
+#define NID_ISO_US 183
+#define OBJ_ISO_US 1L, 2L, 840L
+
+#define SN_X9_57 "X9-57"
+#define LN_X9_57 "X9.57"
+#define NID_X9_57 184
+#define OBJ_X9_57 1L, 2L, 840L, 10040L
+
+#define SN_X9cm "X9cm"
+#define LN_X9cm "X9.57 CM ?"
+#define NID_X9cm 185
+#define OBJ_X9cm 1L, 2L, 840L, 10040L, 4L
+
+#define SN_pkcs1 "pkcs1"
+#define NID_pkcs1 186
+#define OBJ_pkcs1 1L, 2L, 840L, 113549L, 1L, 1L
+
+#define SN_pkcs5 "pkcs5"
+#define NID_pkcs5 187
+#define OBJ_pkcs5 1L, 2L, 840L, 113549L, 1L, 5L
+
+#define SN_SMIME "SMIME"
+#define LN_SMIME "S/MIME"
+#define NID_SMIME 188
+#define OBJ_SMIME 1L, 2L, 840L, 113549L, 1L, 9L, 16L
+
+#define SN_id_smime_mod "id-smime-mod"
+#define NID_id_smime_mod 189
+#define OBJ_id_smime_mod 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L
+
+#define SN_id_smime_ct "id-smime-ct"
+#define NID_id_smime_ct 190
+#define OBJ_id_smime_ct 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L
+
+#define SN_id_smime_aa "id-smime-aa"
+#define NID_id_smime_aa 191
+#define OBJ_id_smime_aa 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L
+
+#define SN_id_smime_alg "id-smime-alg"
+#define NID_id_smime_alg 192
+#define OBJ_id_smime_alg 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L
+
+#define SN_id_smime_cd "id-smime-cd"
+#define NID_id_smime_cd 193
+#define OBJ_id_smime_cd 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L
+
+#define SN_id_smime_spq "id-smime-spq"
+#define NID_id_smime_spq 194
+#define OBJ_id_smime_spq 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L
+
+#define SN_id_smime_cti "id-smime-cti"
+#define NID_id_smime_cti 195
+#define OBJ_id_smime_cti 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L
+
+#define SN_id_smime_mod_cms "id-smime-mod-cms"
+#define NID_id_smime_mod_cms 196
+#define OBJ_id_smime_mod_cms 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 1L
+
+#define SN_id_smime_mod_ess "id-smime-mod-ess"
+#define NID_id_smime_mod_ess 197
+#define OBJ_id_smime_mod_ess 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 2L
+
+#define SN_id_smime_mod_oid "id-smime-mod-oid"
+#define NID_id_smime_mod_oid 198
+#define OBJ_id_smime_mod_oid 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 3L
+
+#define SN_id_smime_mod_msg_v3 "id-smime-mod-msg-v3"
+#define NID_id_smime_mod_msg_v3 199
+#define OBJ_id_smime_mod_msg_v3 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 4L
+
+#define SN_id_smime_mod_ets_eSignature_88 "id-smime-mod-ets-eSignature-88"
+#define NID_id_smime_mod_ets_eSignature_88 200
+#define OBJ_id_smime_mod_ets_eSignature_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 5L
+
+#define SN_id_smime_mod_ets_eSignature_97 "id-smime-mod-ets-eSignature-97"
+#define NID_id_smime_mod_ets_eSignature_97 201
+#define OBJ_id_smime_mod_ets_eSignature_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 6L
+
+#define SN_id_smime_mod_ets_eSigPolicy_88 "id-smime-mod-ets-eSigPolicy-88"
+#define NID_id_smime_mod_ets_eSigPolicy_88 202
+#define OBJ_id_smime_mod_ets_eSigPolicy_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 7L
+
+#define SN_id_smime_mod_ets_eSigPolicy_97 "id-smime-mod-ets-eSigPolicy-97"
+#define NID_id_smime_mod_ets_eSigPolicy_97 203
+#define OBJ_id_smime_mod_ets_eSigPolicy_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 8L
+
+#define SN_id_smime_ct_receipt "id-smime-ct-receipt"
+#define NID_id_smime_ct_receipt 204
+#define OBJ_id_smime_ct_receipt 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 1L
+
+#define SN_id_smime_ct_authData "id-smime-ct-authData"
+#define NID_id_smime_ct_authData 205
+#define OBJ_id_smime_ct_authData 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 2L
+
+#define SN_id_smime_ct_publishCert "id-smime-ct-publishCert"
+#define NID_id_smime_ct_publishCert 206
+#define OBJ_id_smime_ct_publishCert 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 3L
+
+#define SN_id_smime_ct_TSTInfo "id-smime-ct-TSTInfo"
+#define NID_id_smime_ct_TSTInfo 207
+#define OBJ_id_smime_ct_TSTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 4L
+
+#define SN_id_smime_ct_TDTInfo "id-smime-ct-TDTInfo"
+#define NID_id_smime_ct_TDTInfo 208
+#define OBJ_id_smime_ct_TDTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 5L
+
+#define SN_id_smime_ct_contentInfo "id-smime-ct-contentInfo"
+#define NID_id_smime_ct_contentInfo 209
+#define OBJ_id_smime_ct_contentInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 6L
+
+#define SN_id_smime_ct_DVCSRequestData "id-smime-ct-DVCSRequestData"
+#define NID_id_smime_ct_DVCSRequestData 210
+#define OBJ_id_smime_ct_DVCSRequestData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 7L
+
+#define SN_id_smime_ct_DVCSResponseData "id-smime-ct-DVCSResponseData"
+#define NID_id_smime_ct_DVCSResponseData 211
+#define OBJ_id_smime_ct_DVCSResponseData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 8L
+
+#define SN_id_smime_aa_receiptRequest "id-smime-aa-receiptRequest"
+#define NID_id_smime_aa_receiptRequest 212
+#define OBJ_id_smime_aa_receiptRequest \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 1L
+
+#define SN_id_smime_aa_securityLabel "id-smime-aa-securityLabel"
+#define NID_id_smime_aa_securityLabel 213
+#define OBJ_id_smime_aa_securityLabel 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 2L
+
+#define SN_id_smime_aa_mlExpandHistory "id-smime-aa-mlExpandHistory"
+#define NID_id_smime_aa_mlExpandHistory 214
+#define OBJ_id_smime_aa_mlExpandHistory \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 3L
+
+#define SN_id_smime_aa_contentHint "id-smime-aa-contentHint"
+#define NID_id_smime_aa_contentHint 215
+#define OBJ_id_smime_aa_contentHint 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 4L
+
+#define SN_id_smime_aa_msgSigDigest "id-smime-aa-msgSigDigest"
+#define NID_id_smime_aa_msgSigDigest 216
+#define OBJ_id_smime_aa_msgSigDigest 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 5L
+
+#define SN_id_smime_aa_encapContentType "id-smime-aa-encapContentType"
+#define NID_id_smime_aa_encapContentType 217
+#define OBJ_id_smime_aa_encapContentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 6L
+
+#define SN_id_smime_aa_contentIdentifier "id-smime-aa-contentIdentifier"
+#define NID_id_smime_aa_contentIdentifier 218
+#define OBJ_id_smime_aa_contentIdentifier \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 7L
+
+#define SN_id_smime_aa_macValue "id-smime-aa-macValue"
+#define NID_id_smime_aa_macValue 219
+#define OBJ_id_smime_aa_macValue 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 8L
+
+#define SN_id_smime_aa_equivalentLabels "id-smime-aa-equivalentLabels"
+#define NID_id_smime_aa_equivalentLabels 220
+#define OBJ_id_smime_aa_equivalentLabels \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 9L
+
+#define SN_id_smime_aa_contentReference "id-smime-aa-contentReference"
+#define NID_id_smime_aa_contentReference 221
+#define OBJ_id_smime_aa_contentReference \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 10L
+
+#define SN_id_smime_aa_encrypKeyPref "id-smime-aa-encrypKeyPref"
+#define NID_id_smime_aa_encrypKeyPref 222
+#define OBJ_id_smime_aa_encrypKeyPref \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 11L
+
+#define SN_id_smime_aa_signingCertificate "id-smime-aa-signingCertificate"
+#define NID_id_smime_aa_signingCertificate 223
+#define OBJ_id_smime_aa_signingCertificate \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 12L
+
+#define SN_id_smime_aa_smimeEncryptCerts "id-smime-aa-smimeEncryptCerts"
+#define NID_id_smime_aa_smimeEncryptCerts 224
+#define OBJ_id_smime_aa_smimeEncryptCerts \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 13L
+
+#define SN_id_smime_aa_timeStampToken "id-smime-aa-timeStampToken"
+#define NID_id_smime_aa_timeStampToken 225
+#define OBJ_id_smime_aa_timeStampToken \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 14L
+
+#define SN_id_smime_aa_ets_sigPolicyId "id-smime-aa-ets-sigPolicyId"
+#define NID_id_smime_aa_ets_sigPolicyId 226
+#define OBJ_id_smime_aa_ets_sigPolicyId \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 15L
+
+#define SN_id_smime_aa_ets_commitmentType "id-smime-aa-ets-commitmentType"
+#define NID_id_smime_aa_ets_commitmentType 227
+#define OBJ_id_smime_aa_ets_commitmentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 16L
+
+#define SN_id_smime_aa_ets_signerLocation "id-smime-aa-ets-signerLocation"
+#define NID_id_smime_aa_ets_signerLocation 228
+#define OBJ_id_smime_aa_ets_signerLocation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 17L
+
+#define SN_id_smime_aa_ets_signerAttr "id-smime-aa-ets-signerAttr"
+#define NID_id_smime_aa_ets_signerAttr 229
+#define OBJ_id_smime_aa_ets_signerAttr \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 18L
+
+#define SN_id_smime_aa_ets_otherSigCert "id-smime-aa-ets-otherSigCert"
+#define NID_id_smime_aa_ets_otherSigCert 230
+#define OBJ_id_smime_aa_ets_otherSigCert \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 19L
+
+#define SN_id_smime_aa_ets_contentTimestamp "id-smime-aa-ets-contentTimestamp"
+#define NID_id_smime_aa_ets_contentTimestamp 231
+#define OBJ_id_smime_aa_ets_contentTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 20L
+
+#define SN_id_smime_aa_ets_CertificateRefs "id-smime-aa-ets-CertificateRefs"
+#define NID_id_smime_aa_ets_CertificateRefs 232
+#define OBJ_id_smime_aa_ets_CertificateRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 21L
+
+#define SN_id_smime_aa_ets_RevocationRefs "id-smime-aa-ets-RevocationRefs"
+#define NID_id_smime_aa_ets_RevocationRefs 233
+#define OBJ_id_smime_aa_ets_RevocationRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 22L
+
+#define SN_id_smime_aa_ets_certValues "id-smime-aa-ets-certValues"
+#define NID_id_smime_aa_ets_certValues 234
+#define OBJ_id_smime_aa_ets_certValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 23L
+
+#define SN_id_smime_aa_ets_revocationValues "id-smime-aa-ets-revocationValues"
+#define NID_id_smime_aa_ets_revocationValues 235
+#define OBJ_id_smime_aa_ets_revocationValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 24L
+
+#define SN_id_smime_aa_ets_escTimeStamp "id-smime-aa-ets-escTimeStamp"
+#define NID_id_smime_aa_ets_escTimeStamp 236
+#define OBJ_id_smime_aa_ets_escTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 25L
+
+#define SN_id_smime_aa_ets_certCRLTimestamp "id-smime-aa-ets-certCRLTimestamp"
+#define NID_id_smime_aa_ets_certCRLTimestamp 237
+#define OBJ_id_smime_aa_ets_certCRLTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 26L
+
+#define SN_id_smime_aa_ets_archiveTimeStamp "id-smime-aa-ets-archiveTimeStamp"
+#define NID_id_smime_aa_ets_archiveTimeStamp 238
+#define OBJ_id_smime_aa_ets_archiveTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 27L
+
+#define SN_id_smime_aa_signatureType "id-smime-aa-signatureType"
+#define NID_id_smime_aa_signatureType 239
+#define OBJ_id_smime_aa_signatureType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 28L
+
+#define SN_id_smime_aa_dvcs_dvc "id-smime-aa-dvcs-dvc"
+#define NID_id_smime_aa_dvcs_dvc 240
+#define OBJ_id_smime_aa_dvcs_dvc 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 29L
+
+#define SN_id_smime_alg_ESDHwith3DES "id-smime-alg-ESDHwith3DES"
+#define NID_id_smime_alg_ESDHwith3DES 241
+#define OBJ_id_smime_alg_ESDHwith3DES 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 1L
+
+#define SN_id_smime_alg_ESDHwithRC2 "id-smime-alg-ESDHwithRC2"
+#define NID_id_smime_alg_ESDHwithRC2 242
+#define OBJ_id_smime_alg_ESDHwithRC2 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 2L
+
+#define SN_id_smime_alg_3DESwrap "id-smime-alg-3DESwrap"
+#define NID_id_smime_alg_3DESwrap 243
+#define OBJ_id_smime_alg_3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 3L
+
+#define SN_id_smime_alg_RC2wrap "id-smime-alg-RC2wrap"
+#define NID_id_smime_alg_RC2wrap 244
+#define OBJ_id_smime_alg_RC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 4L
+
+#define SN_id_smime_alg_ESDH "id-smime-alg-ESDH"
+#define NID_id_smime_alg_ESDH 245
+#define OBJ_id_smime_alg_ESDH 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 5L
+
+#define SN_id_smime_alg_CMS3DESwrap "id-smime-alg-CMS3DESwrap"
+#define NID_id_smime_alg_CMS3DESwrap 246
+#define OBJ_id_smime_alg_CMS3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 6L
+
+#define SN_id_smime_alg_CMSRC2wrap "id-smime-alg-CMSRC2wrap"
+#define NID_id_smime_alg_CMSRC2wrap 247
+#define OBJ_id_smime_alg_CMSRC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 7L
+
+#define SN_id_smime_cd_ldap "id-smime-cd-ldap"
+#define NID_id_smime_cd_ldap 248
+#define OBJ_id_smime_cd_ldap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L, 1L
+
+#define SN_id_smime_spq_ets_sqt_uri "id-smime-spq-ets-sqt-uri"
+#define NID_id_smime_spq_ets_sqt_uri 249
+#define OBJ_id_smime_spq_ets_sqt_uri 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 1L
+
+#define SN_id_smime_spq_ets_sqt_unotice "id-smime-spq-ets-sqt-unotice"
+#define NID_id_smime_spq_ets_sqt_unotice 250
+#define OBJ_id_smime_spq_ets_sqt_unotice \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 2L
+
+#define SN_id_smime_cti_ets_proofOfOrigin "id-smime-cti-ets-proofOfOrigin"
+#define NID_id_smime_cti_ets_proofOfOrigin 251
+#define OBJ_id_smime_cti_ets_proofOfOrigin \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 1L
+
+#define SN_id_smime_cti_ets_proofOfReceipt "id-smime-cti-ets-proofOfReceipt"
+#define NID_id_smime_cti_ets_proofOfReceipt 252
+#define OBJ_id_smime_cti_ets_proofOfReceipt \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 2L
+
+#define SN_id_smime_cti_ets_proofOfDelivery "id-smime-cti-ets-proofOfDelivery"
+#define NID_id_smime_cti_ets_proofOfDelivery 253
+#define OBJ_id_smime_cti_ets_proofOfDelivery \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 3L
+
+#define SN_id_smime_cti_ets_proofOfSender "id-smime-cti-ets-proofOfSender"
+#define NID_id_smime_cti_ets_proofOfSender 254
+#define OBJ_id_smime_cti_ets_proofOfSender \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 4L
+
+#define SN_id_smime_cti_ets_proofOfApproval "id-smime-cti-ets-proofOfApproval"
+#define NID_id_smime_cti_ets_proofOfApproval 255
+#define OBJ_id_smime_cti_ets_proofOfApproval \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 5L
+
+#define SN_id_smime_cti_ets_proofOfCreation "id-smime-cti-ets-proofOfCreation"
+#define NID_id_smime_cti_ets_proofOfCreation 256
+#define OBJ_id_smime_cti_ets_proofOfCreation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 6L
+
+#define SN_md4 "MD4"
+#define LN_md4 "md4"
+#define NID_md4 257
+#define OBJ_md4 1L, 2L, 840L, 113549L, 2L, 4L
+
+#define SN_id_pkix_mod "id-pkix-mod"
+#define NID_id_pkix_mod 258
+#define OBJ_id_pkix_mod 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L
+
+#define SN_id_qt "id-qt"
+#define NID_id_qt 259
+#define OBJ_id_qt 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L
+
+#define SN_id_it "id-it"
+#define NID_id_it 260
+#define OBJ_id_it 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L
+
+#define SN_id_pkip "id-pkip"
+#define NID_id_pkip 261
+#define OBJ_id_pkip 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L
+
+#define SN_id_alg "id-alg"
+#define NID_id_alg 262
+#define OBJ_id_alg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L
+
+#define SN_id_cmc "id-cmc"
+#define NID_id_cmc 263
+#define OBJ_id_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L
+
+#define SN_id_on "id-on"
+#define NID_id_on 264
+#define OBJ_id_on 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L
+
+#define SN_id_pda "id-pda"
+#define NID_id_pda 265
+#define OBJ_id_pda 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L
+
+#define SN_id_aca "id-aca"
+#define NID_id_aca 266
+#define OBJ_id_aca 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L
+
+#define SN_id_qcs "id-qcs"
+#define NID_id_qcs 267
+#define OBJ_id_qcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L
+
+#define SN_id_cct "id-cct"
+#define NID_id_cct 268
+#define OBJ_id_cct 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L
+
+#define SN_id_pkix1_explicit_88 "id-pkix1-explicit-88"
+#define NID_id_pkix1_explicit_88 269
+#define OBJ_id_pkix1_explicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 1L
+
+#define SN_id_pkix1_implicit_88 "id-pkix1-implicit-88"
+#define NID_id_pkix1_implicit_88 270
+#define OBJ_id_pkix1_implicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 2L
+
+#define SN_id_pkix1_explicit_93 "id-pkix1-explicit-93"
+#define NID_id_pkix1_explicit_93 271
+#define OBJ_id_pkix1_explicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 3L
+
+#define SN_id_pkix1_implicit_93 "id-pkix1-implicit-93"
+#define NID_id_pkix1_implicit_93 272
+#define OBJ_id_pkix1_implicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 4L
+
+#define SN_id_mod_crmf "id-mod-crmf"
+#define NID_id_mod_crmf 273
+#define OBJ_id_mod_crmf 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 5L
+
+#define SN_id_mod_cmc "id-mod-cmc"
+#define NID_id_mod_cmc 274
+#define OBJ_id_mod_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 6L
+
+#define SN_id_mod_kea_profile_88 "id-mod-kea-profile-88"
+#define NID_id_mod_kea_profile_88 275
+#define OBJ_id_mod_kea_profile_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 7L
+
+#define SN_id_mod_kea_profile_93 "id-mod-kea-profile-93"
+#define NID_id_mod_kea_profile_93 276
+#define OBJ_id_mod_kea_profile_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 8L
+
+#define SN_id_mod_cmp "id-mod-cmp"
+#define NID_id_mod_cmp 277
+#define OBJ_id_mod_cmp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 9L
+
+#define SN_id_mod_qualified_cert_88 "id-mod-qualified-cert-88"
+#define NID_id_mod_qualified_cert_88 278
+#define OBJ_id_mod_qualified_cert_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 10L
+
+#define SN_id_mod_qualified_cert_93 "id-mod-qualified-cert-93"
+#define NID_id_mod_qualified_cert_93 279
+#define OBJ_id_mod_qualified_cert_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 11L
+
+#define SN_id_mod_attribute_cert "id-mod-attribute-cert"
+#define NID_id_mod_attribute_cert 280
+#define OBJ_id_mod_attribute_cert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 12L
+
+#define SN_id_mod_timestamp_protocol "id-mod-timestamp-protocol"
+#define NID_id_mod_timestamp_protocol 281
+#define OBJ_id_mod_timestamp_protocol 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 13L
+
+#define SN_id_mod_ocsp "id-mod-ocsp"
+#define NID_id_mod_ocsp 282
+#define OBJ_id_mod_ocsp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 14L
+
+#define SN_id_mod_dvcs "id-mod-dvcs"
+#define NID_id_mod_dvcs 283
+#define OBJ_id_mod_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 15L
+
+#define SN_id_mod_cmp2000 "id-mod-cmp2000"
+#define NID_id_mod_cmp2000 284
+#define OBJ_id_mod_cmp2000 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 16L
+
+#define SN_biometricInfo "biometricInfo"
+#define LN_biometricInfo "Biometric Info"
+#define NID_biometricInfo 285
+#define OBJ_biometricInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 2L
+
+#define SN_qcStatements "qcStatements"
+#define NID_qcStatements 286
+#define OBJ_qcStatements 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 3L
+
+#define SN_ac_auditEntity "ac-auditEntity"
+#define NID_ac_auditEntity 287
+#define OBJ_ac_auditEntity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 4L
+
+#define SN_ac_targeting "ac-targeting"
+#define NID_ac_targeting 288
+#define OBJ_ac_targeting 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 5L
+
+#define SN_aaControls "aaControls"
+#define NID_aaControls 289
+#define OBJ_aaControls 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 6L
+
+#define SN_sbgp_ipAddrBlock "sbgp-ipAddrBlock"
+#define NID_sbgp_ipAddrBlock 290
+#define OBJ_sbgp_ipAddrBlock 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 7L
+
+#define SN_sbgp_autonomousSysNum "sbgp-autonomousSysNum"
+#define NID_sbgp_autonomousSysNum 291
+#define OBJ_sbgp_autonomousSysNum 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 8L
+
+#define SN_sbgp_routerIdentifier "sbgp-routerIdentifier"
+#define NID_sbgp_routerIdentifier 292
+#define OBJ_sbgp_routerIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 9L
+
+#define SN_textNotice "textNotice"
+#define NID_textNotice 293
+#define OBJ_textNotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 3L
+
+#define SN_ipsecEndSystem "ipsecEndSystem"
+#define LN_ipsecEndSystem "IPSec End System"
+#define NID_ipsecEndSystem 294
+#define OBJ_ipsecEndSystem 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 5L
+
+#define SN_ipsecTunnel "ipsecTunnel"
+#define LN_ipsecTunnel "IPSec Tunnel"
+#define NID_ipsecTunnel 295
+#define OBJ_ipsecTunnel 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 6L
+
+#define SN_ipsecUser "ipsecUser"
+#define LN_ipsecUser "IPSec User"
+#define NID_ipsecUser 296
+#define OBJ_ipsecUser 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 7L
+
+#define SN_dvcs "DVCS"
+#define LN_dvcs "dvcs"
+#define NID_dvcs 297
+#define OBJ_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 10L
+
+#define SN_id_it_caProtEncCert "id-it-caProtEncCert"
+#define NID_id_it_caProtEncCert 298
+#define OBJ_id_it_caProtEncCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 1L
+
+#define SN_id_it_signKeyPairTypes "id-it-signKeyPairTypes"
+#define NID_id_it_signKeyPairTypes 299
+#define OBJ_id_it_signKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 2L
+
+#define SN_id_it_encKeyPairTypes "id-it-encKeyPairTypes"
+#define NID_id_it_encKeyPairTypes 300
+#define OBJ_id_it_encKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 3L
+
+#define SN_id_it_preferredSymmAlg "id-it-preferredSymmAlg"
+#define NID_id_it_preferredSymmAlg 301
+#define OBJ_id_it_preferredSymmAlg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 4L
+
+#define SN_id_it_caKeyUpdateInfo "id-it-caKeyUpdateInfo"
+#define NID_id_it_caKeyUpdateInfo 302
+#define OBJ_id_it_caKeyUpdateInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 5L
+
+#define SN_id_it_currentCRL "id-it-currentCRL"
+#define NID_id_it_currentCRL 303
+#define OBJ_id_it_currentCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 6L
+
+#define SN_id_it_unsupportedOIDs "id-it-unsupportedOIDs"
+#define NID_id_it_unsupportedOIDs 304
+#define OBJ_id_it_unsupportedOIDs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 7L
+
+#define SN_id_it_subscriptionRequest "id-it-subscriptionRequest"
+#define NID_id_it_subscriptionRequest 305
+#define OBJ_id_it_subscriptionRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 8L
+
+#define SN_id_it_subscriptionResponse "id-it-subscriptionResponse"
+#define NID_id_it_subscriptionResponse 306
+#define OBJ_id_it_subscriptionResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 9L
+
+#define SN_id_it_keyPairParamReq "id-it-keyPairParamReq"
+#define NID_id_it_keyPairParamReq 307
+#define OBJ_id_it_keyPairParamReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 10L
+
+#define SN_id_it_keyPairParamRep "id-it-keyPairParamRep"
+#define NID_id_it_keyPairParamRep 308
+#define OBJ_id_it_keyPairParamRep 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 11L
+
+#define SN_id_it_revPassphrase "id-it-revPassphrase"
+#define NID_id_it_revPassphrase 309
+#define OBJ_id_it_revPassphrase 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 12L
+
+#define SN_id_it_implicitConfirm "id-it-implicitConfirm"
+#define NID_id_it_implicitConfirm 310
+#define OBJ_id_it_implicitConfirm 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 13L
+
+#define SN_id_it_confirmWaitTime "id-it-confirmWaitTime"
+#define NID_id_it_confirmWaitTime 311
+#define OBJ_id_it_confirmWaitTime 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 14L
+
+#define SN_id_it_origPKIMessage "id-it-origPKIMessage"
+#define NID_id_it_origPKIMessage 312
+#define OBJ_id_it_origPKIMessage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 15L
+
+#define SN_id_regCtrl "id-regCtrl"
+#define NID_id_regCtrl 313
+#define OBJ_id_regCtrl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L
+
+#define SN_id_regInfo "id-regInfo"
+#define NID_id_regInfo 314
+#define OBJ_id_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L
+
+#define SN_id_regCtrl_regToken "id-regCtrl-regToken"
+#define NID_id_regCtrl_regToken 315
+#define OBJ_id_regCtrl_regToken 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 1L
+
+#define SN_id_regCtrl_authenticator "id-regCtrl-authenticator"
+#define NID_id_regCtrl_authenticator 316
+#define OBJ_id_regCtrl_authenticator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 2L
+
+#define SN_id_regCtrl_pkiPublicationInfo "id-regCtrl-pkiPublicationInfo"
+#define NID_id_regCtrl_pkiPublicationInfo 317
+#define OBJ_id_regCtrl_pkiPublicationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 3L
+
+#define SN_id_regCtrl_pkiArchiveOptions "id-regCtrl-pkiArchiveOptions"
+#define NID_id_regCtrl_pkiArchiveOptions 318
+#define OBJ_id_regCtrl_pkiArchiveOptions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 4L
+
+#define SN_id_regCtrl_oldCertID "id-regCtrl-oldCertID"
+#define NID_id_regCtrl_oldCertID 319
+#define OBJ_id_regCtrl_oldCertID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 5L
+
+#define SN_id_regCtrl_protocolEncrKey "id-regCtrl-protocolEncrKey"
+#define NID_id_regCtrl_protocolEncrKey 320
+#define OBJ_id_regCtrl_protocolEncrKey 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 6L
+
+#define SN_id_regInfo_utf8Pairs "id-regInfo-utf8Pairs"
+#define NID_id_regInfo_utf8Pairs 321
+#define OBJ_id_regInfo_utf8Pairs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 1L
+
+#define SN_id_regInfo_certReq "id-regInfo-certReq"
+#define NID_id_regInfo_certReq 322
+#define OBJ_id_regInfo_certReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 2L
+
+#define SN_id_alg_des40 "id-alg-des40"
+#define NID_id_alg_des40 323
+#define OBJ_id_alg_des40 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 1L
+
+#define SN_id_alg_noSignature "id-alg-noSignature"
+#define NID_id_alg_noSignature 324
+#define OBJ_id_alg_noSignature 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 2L
+
+#define SN_id_alg_dh_sig_hmac_sha1 "id-alg-dh-sig-hmac-sha1"
+#define NID_id_alg_dh_sig_hmac_sha1 325
+#define OBJ_id_alg_dh_sig_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 3L
+
+#define SN_id_alg_dh_pop "id-alg-dh-pop"
+#define NID_id_alg_dh_pop 326
+#define OBJ_id_alg_dh_pop 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 4L
+
+#define SN_id_cmc_statusInfo "id-cmc-statusInfo"
+#define NID_id_cmc_statusInfo 327
+#define OBJ_id_cmc_statusInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 1L
+
+#define SN_id_cmc_identification "id-cmc-identification"
+#define NID_id_cmc_identification 328
+#define OBJ_id_cmc_identification 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 2L
+
+#define SN_id_cmc_identityProof "id-cmc-identityProof"
+#define NID_id_cmc_identityProof 329
+#define OBJ_id_cmc_identityProof 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 3L
+
+#define SN_id_cmc_dataReturn "id-cmc-dataReturn"
+#define NID_id_cmc_dataReturn 330
+#define OBJ_id_cmc_dataReturn 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 4L
+
+#define SN_id_cmc_transactionId "id-cmc-transactionId"
+#define NID_id_cmc_transactionId 331
+#define OBJ_id_cmc_transactionId 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 5L
+
+#define SN_id_cmc_senderNonce "id-cmc-senderNonce"
+#define NID_id_cmc_senderNonce 332
+#define OBJ_id_cmc_senderNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 6L
+
+#define SN_id_cmc_recipientNonce "id-cmc-recipientNonce"
+#define NID_id_cmc_recipientNonce 333
+#define OBJ_id_cmc_recipientNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 7L
+
+#define SN_id_cmc_addExtensions "id-cmc-addExtensions"
+#define NID_id_cmc_addExtensions 334
+#define OBJ_id_cmc_addExtensions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 8L
+
+#define SN_id_cmc_encryptedPOP "id-cmc-encryptedPOP"
+#define NID_id_cmc_encryptedPOP 335
+#define OBJ_id_cmc_encryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 9L
+
+#define SN_id_cmc_decryptedPOP "id-cmc-decryptedPOP"
+#define NID_id_cmc_decryptedPOP 336
+#define OBJ_id_cmc_decryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 10L
+
+#define SN_id_cmc_lraPOPWitness "id-cmc-lraPOPWitness"
+#define NID_id_cmc_lraPOPWitness 337
+#define OBJ_id_cmc_lraPOPWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 11L
+
+#define SN_id_cmc_getCert "id-cmc-getCert"
+#define NID_id_cmc_getCert 338
+#define OBJ_id_cmc_getCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 15L
+
+#define SN_id_cmc_getCRL "id-cmc-getCRL"
+#define NID_id_cmc_getCRL 339
+#define OBJ_id_cmc_getCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 16L
+
+#define SN_id_cmc_revokeRequest "id-cmc-revokeRequest"
+#define NID_id_cmc_revokeRequest 340
+#define OBJ_id_cmc_revokeRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 17L
+
+#define SN_id_cmc_regInfo "id-cmc-regInfo"
+#define NID_id_cmc_regInfo 341
+#define OBJ_id_cmc_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 18L
+
+#define SN_id_cmc_responseInfo "id-cmc-responseInfo"
+#define NID_id_cmc_responseInfo 342
+#define OBJ_id_cmc_responseInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 19L
+
+#define SN_id_cmc_queryPending "id-cmc-queryPending"
+#define NID_id_cmc_queryPending 343
+#define OBJ_id_cmc_queryPending 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 21L
+
+#define SN_id_cmc_popLinkRandom "id-cmc-popLinkRandom"
+#define NID_id_cmc_popLinkRandom 344
+#define OBJ_id_cmc_popLinkRandom 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 22L
+
+#define SN_id_cmc_popLinkWitness "id-cmc-popLinkWitness"
+#define NID_id_cmc_popLinkWitness 345
+#define OBJ_id_cmc_popLinkWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 23L
+
+#define SN_id_cmc_confirmCertAcceptance "id-cmc-confirmCertAcceptance"
+#define NID_id_cmc_confirmCertAcceptance 346
+#define OBJ_id_cmc_confirmCertAcceptance 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 24L
+
+#define SN_id_on_personalData "id-on-personalData"
+#define NID_id_on_personalData 347
+#define OBJ_id_on_personalData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 1L
+
+#define SN_id_pda_dateOfBirth "id-pda-dateOfBirth"
+#define NID_id_pda_dateOfBirth 348
+#define OBJ_id_pda_dateOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 1L
+
+#define SN_id_pda_placeOfBirth "id-pda-placeOfBirth"
+#define NID_id_pda_placeOfBirth 349
+#define OBJ_id_pda_placeOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 2L
+
+#define SN_id_pda_gender "id-pda-gender"
+#define NID_id_pda_gender 351
+#define OBJ_id_pda_gender 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 3L
+
+#define SN_id_pda_countryOfCitizenship "id-pda-countryOfCitizenship"
+#define NID_id_pda_countryOfCitizenship 352
+#define OBJ_id_pda_countryOfCitizenship 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 4L
+
+#define SN_id_pda_countryOfResidence "id-pda-countryOfResidence"
+#define NID_id_pda_countryOfResidence 353
+#define OBJ_id_pda_countryOfResidence 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 5L
+
+#define SN_id_aca_authenticationInfo "id-aca-authenticationInfo"
+#define NID_id_aca_authenticationInfo 354
+#define OBJ_id_aca_authenticationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 1L
+
+#define SN_id_aca_accessIdentity "id-aca-accessIdentity"
+#define NID_id_aca_accessIdentity 355
+#define OBJ_id_aca_accessIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 2L
+
+#define SN_id_aca_chargingIdentity "id-aca-chargingIdentity"
+#define NID_id_aca_chargingIdentity 356
+#define OBJ_id_aca_chargingIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 3L
+
+#define SN_id_aca_group "id-aca-group"
+#define NID_id_aca_group 357
+#define OBJ_id_aca_group 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 4L
+
+#define SN_id_aca_role "id-aca-role"
+#define NID_id_aca_role 358
+#define OBJ_id_aca_role 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 5L
+
+#define SN_id_qcs_pkixQCSyntax_v1 "id-qcs-pkixQCSyntax-v1"
+#define NID_id_qcs_pkixQCSyntax_v1 359
+#define OBJ_id_qcs_pkixQCSyntax_v1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L, 1L
+
+#define SN_id_cct_crs "id-cct-crs"
+#define NID_id_cct_crs 360
+#define OBJ_id_cct_crs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 1L
+
+#define SN_id_cct_PKIData "id-cct-PKIData"
+#define NID_id_cct_PKIData 361
+#define OBJ_id_cct_PKIData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 2L
+
+#define SN_id_cct_PKIResponse "id-cct-PKIResponse"
+#define NID_id_cct_PKIResponse 362
+#define OBJ_id_cct_PKIResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 3L
+
+#define SN_ad_timeStamping "ad_timestamping"
+#define LN_ad_timeStamping "AD Time Stamping"
+#define NID_ad_timeStamping 363
+#define OBJ_ad_timeStamping 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 3L
+
+#define SN_ad_dvcs "AD_DVCS"
+#define LN_ad_dvcs "ad dvcs"
+#define NID_ad_dvcs 364
+#define OBJ_ad_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 4L
+
+#define SN_id_pkix_OCSP_basic "basicOCSPResponse"
+#define LN_id_pkix_OCSP_basic "Basic OCSP Response"
+#define NID_id_pkix_OCSP_basic 365
+#define OBJ_id_pkix_OCSP_basic 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 1L
+
+#define SN_id_pkix_OCSP_Nonce "Nonce"
+#define LN_id_pkix_OCSP_Nonce "OCSP Nonce"
+#define NID_id_pkix_OCSP_Nonce 366
+#define OBJ_id_pkix_OCSP_Nonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 2L
+
+#define SN_id_pkix_OCSP_CrlID "CrlID"
+#define LN_id_pkix_OCSP_CrlID "OCSP CRL ID"
+#define NID_id_pkix_OCSP_CrlID 367
+#define OBJ_id_pkix_OCSP_CrlID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 3L
+
+#define SN_id_pkix_OCSP_acceptableResponses "acceptableResponses"
+#define LN_id_pkix_OCSP_acceptableResponses "Acceptable OCSP Responses"
+#define NID_id_pkix_OCSP_acceptableResponses 368
+#define OBJ_id_pkix_OCSP_acceptableResponses \
+  1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 4L
+
+#define SN_id_pkix_OCSP_noCheck "noCheck"
+#define LN_id_pkix_OCSP_noCheck "OCSP No Check"
+#define NID_id_pkix_OCSP_noCheck 369
+#define OBJ_id_pkix_OCSP_noCheck 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 5L
+
+#define SN_id_pkix_OCSP_archiveCutoff "archiveCutoff"
+#define LN_id_pkix_OCSP_archiveCutoff "OCSP Archive Cutoff"
+#define NID_id_pkix_OCSP_archiveCutoff 370
+#define OBJ_id_pkix_OCSP_archiveCutoff 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 6L
+
+#define SN_id_pkix_OCSP_serviceLocator "serviceLocator"
+#define LN_id_pkix_OCSP_serviceLocator "OCSP Service Locator"
+#define NID_id_pkix_OCSP_serviceLocator 371
+#define OBJ_id_pkix_OCSP_serviceLocator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 7L
+
+#define SN_id_pkix_OCSP_extendedStatus "extendedStatus"
+#define LN_id_pkix_OCSP_extendedStatus "Extended OCSP Status"
+#define NID_id_pkix_OCSP_extendedStatus 372
+#define OBJ_id_pkix_OCSP_extendedStatus 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 8L
+
+#define SN_id_pkix_OCSP_valid "valid"
+#define NID_id_pkix_OCSP_valid 373
+#define OBJ_id_pkix_OCSP_valid 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 9L
+
+#define SN_id_pkix_OCSP_path "path"
+#define NID_id_pkix_OCSP_path 374
+#define OBJ_id_pkix_OCSP_path 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 10L
+
+#define SN_id_pkix_OCSP_trustRoot "trustRoot"
+#define LN_id_pkix_OCSP_trustRoot "Trust Root"
+#define NID_id_pkix_OCSP_trustRoot 375
+#define OBJ_id_pkix_OCSP_trustRoot 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 11L
+
+#define SN_algorithm "algorithm"
+#define LN_algorithm "algorithm"
+#define NID_algorithm 376
+#define OBJ_algorithm 1L, 3L, 14L, 3L, 2L
+
+#define SN_rsaSignature "rsaSignature"
+#define NID_rsaSignature 377
+#define OBJ_rsaSignature 1L, 3L, 14L, 3L, 2L, 11L
+
+#define SN_X500algorithms "X500algorithms"
+#define LN_X500algorithms "directory services - algorithms"
+#define NID_X500algorithms 378
+#define OBJ_X500algorithms 2L, 5L, 8L
+
+#define SN_org "ORG"
+#define LN_org "org"
+#define NID_org 379
+#define OBJ_org 1L, 3L
+
+#define SN_dod "DOD"
+#define LN_dod "dod"
+#define NID_dod 380
+#define OBJ_dod 1L, 3L, 6L
+
+#define SN_iana "IANA"
+#define LN_iana "iana"
+#define NID_iana 381
+#define OBJ_iana 1L, 3L, 6L, 1L
+
+#define SN_Directory "directory"
+#define LN_Directory "Directory"
+#define NID_Directory 382
+#define OBJ_Directory 1L, 3L, 6L, 1L, 1L
+
+#define SN_Management "mgmt"
+#define LN_Management "Management"
+#define NID_Management 383
+#define OBJ_Management 1L, 3L, 6L, 1L, 2L
+
+#define SN_Experimental "experimental"
+#define LN_Experimental "Experimental"
+#define NID_Experimental 384
+#define OBJ_Experimental 1L, 3L, 6L, 1L, 3L
+
+#define SN_Private "private"
+#define LN_Private "Private"
+#define NID_Private 385
+#define OBJ_Private 1L, 3L, 6L, 1L, 4L
+
+#define SN_Security "security"
+#define LN_Security "Security"
+#define NID_Security 386
+#define OBJ_Security 1L, 3L, 6L, 1L, 5L
+
+#define SN_SNMPv2 "snmpv2"
+#define LN_SNMPv2 "SNMPv2"
+#define NID_SNMPv2 387
+#define OBJ_SNMPv2 1L, 3L, 6L, 1L, 6L
+
+#define LN_Mail "Mail"
+#define NID_Mail 388
+#define OBJ_Mail 1L, 3L, 6L, 1L, 7L
+
+#define SN_Enterprises "enterprises"
+#define LN_Enterprises "Enterprises"
+#define NID_Enterprises 389
+#define OBJ_Enterprises 1L, 3L, 6L, 1L, 4L, 1L
+
+#define SN_dcObject "dcobject"
+#define LN_dcObject "dcObject"
+#define NID_dcObject 390
+#define OBJ_dcObject 1L, 3L, 6L, 1L, 4L, 1L, 1466L, 344L
+
+#define SN_domainComponent "DC"
+#define LN_domainComponent "domainComponent"
+#define NID_domainComponent 391
+#define OBJ_domainComponent 0L, 9L, 2342L, 19200300L, 100L, 1L, 25L
+
+#define SN_Domain "domain"
+#define LN_Domain "Domain"
+#define NID_Domain 392
+#define OBJ_Domain 0L, 9L, 2342L, 19200300L, 100L, 4L, 13L
+
+#define SN_selected_attribute_types "selected-attribute-types"
+#define LN_selected_attribute_types "Selected Attribute Types"
+#define NID_selected_attribute_types 394
+#define OBJ_selected_attribute_types 2L, 5L, 1L, 5L
+
+#define SN_clearance "clearance"
+#define NID_clearance 395
+#define OBJ_clearance 2L, 5L, 1L, 5L, 55L
+
+#define SN_md4WithRSAEncryption "RSA-MD4"
+#define LN_md4WithRSAEncryption "md4WithRSAEncryption"
+#define NID_md4WithRSAEncryption 396
+#define OBJ_md4WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 3L
+
+#define SN_ac_proxying "ac-proxying"
+#define NID_ac_proxying 397
+#define OBJ_ac_proxying 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 10L
+
+#define SN_sinfo_access "subjectInfoAccess"
+#define LN_sinfo_access "Subject Information Access"
+#define NID_sinfo_access 398
+#define OBJ_sinfo_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 11L
+
+#define SN_id_aca_encAttrs "id-aca-encAttrs"
+#define NID_id_aca_encAttrs 399
+#define OBJ_id_aca_encAttrs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 6L
+
+#define SN_role "role"
+#define LN_role "role"
+#define NID_role 400
+#define OBJ_role 2L, 5L, 4L, 72L
+
+#define SN_policy_constraints "policyConstraints"
+#define LN_policy_constraints "X509v3 Policy Constraints"
+#define NID_policy_constraints 401
+#define OBJ_policy_constraints 2L, 5L, 29L, 36L
+
+#define SN_target_information "targetInformation"
+#define LN_target_information "X509v3 AC Targeting"
+#define NID_target_information 402
+#define OBJ_target_information 2L, 5L, 29L, 55L
+
+#define SN_no_rev_avail "noRevAvail"
+#define LN_no_rev_avail "X509v3 No Revocation Available"
+#define NID_no_rev_avail 403
+#define OBJ_no_rev_avail 2L, 5L, 29L, 56L
+
+#define SN_ansi_X9_62 "ansi-X9-62"
+#define LN_ansi_X9_62 "ANSI X9.62"
+#define NID_ansi_X9_62 405
+#define OBJ_ansi_X9_62 1L, 2L, 840L, 10045L
+
+#define SN_X9_62_prime_field "prime-field"
+#define NID_X9_62_prime_field 406
+#define OBJ_X9_62_prime_field 1L, 2L, 840L, 10045L, 1L, 1L
+
+#define SN_X9_62_characteristic_two_field "characteristic-two-field"
+#define NID_X9_62_characteristic_two_field 407
+#define OBJ_X9_62_characteristic_two_field 1L, 2L, 840L, 10045L, 1L, 2L
+
+#define SN_X9_62_id_ecPublicKey "id-ecPublicKey"
+#define NID_X9_62_id_ecPublicKey 408
+#define OBJ_X9_62_id_ecPublicKey 1L, 2L, 840L, 10045L, 2L, 1L
+
+#define SN_X9_62_prime192v1 "prime192v1"
+#define NID_X9_62_prime192v1 409
+#define OBJ_X9_62_prime192v1 1L, 2L, 840L, 10045L, 3L, 1L, 1L
+
+#define SN_X9_62_prime192v2 "prime192v2"
+#define NID_X9_62_prime192v2 410
+#define OBJ_X9_62_prime192v2 1L, 2L, 840L, 10045L, 3L, 1L, 2L
+
+#define SN_X9_62_prime192v3 "prime192v3"
+#define NID_X9_62_prime192v3 411
+#define OBJ_X9_62_prime192v3 1L, 2L, 840L, 10045L, 3L, 1L, 3L
+
+#define SN_X9_62_prime239v1 "prime239v1"
+#define NID_X9_62_prime239v1 412
+#define OBJ_X9_62_prime239v1 1L, 2L, 840L, 10045L, 3L, 1L, 4L
+
+#define SN_X9_62_prime239v2 "prime239v2"
+#define NID_X9_62_prime239v2 413
+#define OBJ_X9_62_prime239v2 1L, 2L, 840L, 10045L, 3L, 1L, 5L
+
+#define SN_X9_62_prime239v3 "prime239v3"
+#define NID_X9_62_prime239v3 414
+#define OBJ_X9_62_prime239v3 1L, 2L, 840L, 10045L, 3L, 1L, 6L
+
+#define SN_X9_62_prime256v1 "prime256v1"
+#define NID_X9_62_prime256v1 415
+#define OBJ_X9_62_prime256v1 1L, 2L, 840L, 10045L, 3L, 1L, 7L
+
+#define SN_ecdsa_with_SHA1 "ecdsa-with-SHA1"
+#define NID_ecdsa_with_SHA1 416
+#define OBJ_ecdsa_with_SHA1 1L, 2L, 840L, 10045L, 4L, 1L
+
+#define SN_ms_csp_name "CSPName"
+#define LN_ms_csp_name "Microsoft CSP Name"
+#define NID_ms_csp_name 417
+#define OBJ_ms_csp_name 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 1L
+
+#define SN_aes_128_ecb "AES-128-ECB"
+#define LN_aes_128_ecb "aes-128-ecb"
+#define NID_aes_128_ecb 418
+#define OBJ_aes_128_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 1L
+
+#define SN_aes_128_cbc "AES-128-CBC"
+#define LN_aes_128_cbc "aes-128-cbc"
+#define NID_aes_128_cbc 419
+#define OBJ_aes_128_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 2L
+
+#define SN_aes_128_ofb128 "AES-128-OFB"
+#define LN_aes_128_ofb128 "aes-128-ofb"
+#define NID_aes_128_ofb128 420
+#define OBJ_aes_128_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 3L
+
+#define SN_aes_128_cfb128 "AES-128-CFB"
+#define LN_aes_128_cfb128 "aes-128-cfb"
+#define NID_aes_128_cfb128 421
+#define OBJ_aes_128_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 4L
+
+#define SN_aes_192_ecb "AES-192-ECB"
+#define LN_aes_192_ecb "aes-192-ecb"
+#define NID_aes_192_ecb 422
+#define OBJ_aes_192_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 21L
+
+#define SN_aes_192_cbc "AES-192-CBC"
+#define LN_aes_192_cbc "aes-192-cbc"
+#define NID_aes_192_cbc 423
+#define OBJ_aes_192_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 22L
+
+#define SN_aes_192_ofb128 "AES-192-OFB"
+#define LN_aes_192_ofb128 "aes-192-ofb"
+#define NID_aes_192_ofb128 424
+#define OBJ_aes_192_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 23L
+
+#define SN_aes_192_cfb128 "AES-192-CFB"
+#define LN_aes_192_cfb128 "aes-192-cfb"
+#define NID_aes_192_cfb128 425
+#define OBJ_aes_192_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 24L
+
+#define SN_aes_256_ecb "AES-256-ECB"
+#define LN_aes_256_ecb "aes-256-ecb"
+#define NID_aes_256_ecb 426
+#define OBJ_aes_256_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 41L
+
+#define SN_aes_256_cbc "AES-256-CBC"
+#define LN_aes_256_cbc "aes-256-cbc"
+#define NID_aes_256_cbc 427
+#define OBJ_aes_256_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 42L
+
+#define SN_aes_256_ofb128 "AES-256-OFB"
+#define LN_aes_256_ofb128 "aes-256-ofb"
+#define NID_aes_256_ofb128 428
+#define OBJ_aes_256_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 43L
+
+#define SN_aes_256_cfb128 "AES-256-CFB"
+#define LN_aes_256_cfb128 "aes-256-cfb"
+#define NID_aes_256_cfb128 429
+#define OBJ_aes_256_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 44L
+
+#define SN_hold_instruction_code "holdInstructionCode"
+#define LN_hold_instruction_code "Hold Instruction Code"
+#define NID_hold_instruction_code 430
+#define OBJ_hold_instruction_code 2L, 5L, 29L, 23L
+
+#define SN_hold_instruction_none "holdInstructionNone"
+#define LN_hold_instruction_none "Hold Instruction None"
+#define NID_hold_instruction_none 431
+#define OBJ_hold_instruction_none 1L, 2L, 840L, 10040L, 2L, 1L
+
+#define SN_hold_instruction_call_issuer "holdInstructionCallIssuer"
+#define LN_hold_instruction_call_issuer "Hold Instruction Call Issuer"
+#define NID_hold_instruction_call_issuer 432
+#define OBJ_hold_instruction_call_issuer 1L, 2L, 840L, 10040L, 2L, 2L
+
+#define SN_hold_instruction_reject "holdInstructionReject"
+#define LN_hold_instruction_reject "Hold Instruction Reject"
+#define NID_hold_instruction_reject 433
+#define OBJ_hold_instruction_reject 1L, 2L, 840L, 10040L, 2L, 3L
+
+#define SN_data "data"
+#define NID_data 434
+#define OBJ_data 0L, 9L
+
+#define SN_pss "pss"
+#define NID_pss 435
+#define OBJ_pss 0L, 9L, 2342L
+
+#define SN_ucl "ucl"
+#define NID_ucl 436
+#define OBJ_ucl 0L, 9L, 2342L, 19200300L
+
+#define SN_pilot "pilot"
+#define NID_pilot 437
+#define OBJ_pilot 0L, 9L, 2342L, 19200300L, 100L
+
+#define LN_pilotAttributeType "pilotAttributeType"
+#define NID_pilotAttributeType 438
+#define OBJ_pilotAttributeType 0L, 9L, 2342L, 19200300L, 100L, 1L
+
+#define LN_pilotAttributeSyntax "pilotAttributeSyntax"
+#define NID_pilotAttributeSyntax 439
+#define OBJ_pilotAttributeSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L
+
+#define LN_pilotObjectClass "pilotObjectClass"
+#define NID_pilotObjectClass 440
+#define OBJ_pilotObjectClass 0L, 9L, 2342L, 19200300L, 100L, 4L
+
+#define LN_pilotGroups "pilotGroups"
+#define NID_pilotGroups 441
+#define OBJ_pilotGroups 0L, 9L, 2342L, 19200300L, 100L, 10L
+
+#define LN_iA5StringSyntax "iA5StringSyntax"
+#define NID_iA5StringSyntax 442
+#define OBJ_iA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 4L
+
+#define LN_caseIgnoreIA5StringSyntax "caseIgnoreIA5StringSyntax"
+#define NID_caseIgnoreIA5StringSyntax 443
+#define OBJ_caseIgnoreIA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 5L
+
+#define LN_pilotObject "pilotObject"
+#define NID_pilotObject 444
+#define OBJ_pilotObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 3L
+
+#define LN_pilotPerson "pilotPerson"
+#define NID_pilotPerson 445
+#define OBJ_pilotPerson 0L, 9L, 2342L, 19200300L, 100L, 4L, 4L
+
+#define SN_account "account"
+#define NID_account 446
+#define OBJ_account 0L, 9L, 2342L, 19200300L, 100L, 4L, 5L
+
+#define SN_document "document"
+#define NID_document 447
+#define OBJ_document 0L, 9L, 2342L, 19200300L, 100L, 4L, 6L
+
+#define SN_room "room"
+#define NID_room 448
+#define OBJ_room 0L, 9L, 2342L, 19200300L, 100L, 4L, 7L
+
+#define LN_documentSeries "documentSeries"
+#define NID_documentSeries 449
+#define OBJ_documentSeries 0L, 9L, 2342L, 19200300L, 100L, 4L, 9L
+
+#define LN_rFC822localPart "rFC822localPart"
+#define NID_rFC822localPart 450
+#define OBJ_rFC822localPart 0L, 9L, 2342L, 19200300L, 100L, 4L, 14L
+
+#define LN_dNSDomain "dNSDomain"
+#define NID_dNSDomain 451
+#define OBJ_dNSDomain 0L, 9L, 2342L, 19200300L, 100L, 4L, 15L
+
+#define LN_domainRelatedObject "domainRelatedObject"
+#define NID_domainRelatedObject 452
+#define OBJ_domainRelatedObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 17L
+
+#define LN_friendlyCountry "friendlyCountry"
+#define NID_friendlyCountry 453
+#define OBJ_friendlyCountry 0L, 9L, 2342L, 19200300L, 100L, 4L, 18L
+
+#define LN_simpleSecurityObject "simpleSecurityObject"
+#define NID_simpleSecurityObject 454
+#define OBJ_simpleSecurityObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 19L
+
+#define LN_pilotOrganization "pilotOrganization"
+#define NID_pilotOrganization 455
+#define OBJ_pilotOrganization 0L, 9L, 2342L, 19200300L, 100L, 4L, 20L
+
+#define LN_pilotDSA "pilotDSA"
+#define NID_pilotDSA 456
+#define OBJ_pilotDSA 0L, 9L, 2342L, 19200300L, 100L, 4L, 21L
+
+#define LN_qualityLabelledData "qualityLabelledData"
+#define NID_qualityLabelledData 457
+#define OBJ_qualityLabelledData 0L, 9L, 2342L, 19200300L, 100L, 4L, 22L
+
+#define SN_userId "UID"
+#define LN_userId "userId"
+#define NID_userId 458
+#define OBJ_userId 0L, 9L, 2342L, 19200300L, 100L, 1L, 1L
+
+#define LN_textEncodedORAddress "textEncodedORAddress"
+#define NID_textEncodedORAddress 459
+#define OBJ_textEncodedORAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 2L
+
+#define SN_rfc822Mailbox "mail"
+#define LN_rfc822Mailbox "rfc822Mailbox"
+#define NID_rfc822Mailbox 460
+#define OBJ_rfc822Mailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 3L
+
+#define SN_info "info"
+#define NID_info 461
+#define OBJ_info 0L, 9L, 2342L, 19200300L, 100L, 1L, 4L
+
+#define LN_favouriteDrink "favouriteDrink"
+#define NID_favouriteDrink 462
+#define OBJ_favouriteDrink 0L, 9L, 2342L, 19200300L, 100L, 1L, 5L
+
+#define LN_roomNumber "roomNumber"
+#define NID_roomNumber 463
+#define OBJ_roomNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 6L
+
+#define SN_photo "photo"
+#define NID_photo 464
+#define OBJ_photo 0L, 9L, 2342L, 19200300L, 100L, 1L, 7L
+
+#define LN_userClass "userClass"
+#define NID_userClass 465
+#define OBJ_userClass 0L, 9L, 2342L, 19200300L, 100L, 1L, 8L
+
+#define SN_host "host"
+#define NID_host 466
+#define OBJ_host 0L, 9L, 2342L, 19200300L, 100L, 1L, 9L
+
+#define SN_manager "manager"
+#define NID_manager 467
+#define OBJ_manager 0L, 9L, 2342L, 19200300L, 100L, 1L, 10L
+
+#define LN_documentIdentifier "documentIdentifier"
+#define NID_documentIdentifier 468
+#define OBJ_documentIdentifier 0L, 9L, 2342L, 19200300L, 100L, 1L, 11L
+
+#define LN_documentTitle "documentTitle"
+#define NID_documentTitle 469
+#define OBJ_documentTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 12L
+
+#define LN_documentVersion "documentVersion"
+#define NID_documentVersion 470
+#define OBJ_documentVersion 0L, 9L, 2342L, 19200300L, 100L, 1L, 13L
+
+#define LN_documentAuthor "documentAuthor"
+#define NID_documentAuthor 471
+#define OBJ_documentAuthor 0L, 9L, 2342L, 19200300L, 100L, 1L, 14L
+
+#define LN_documentLocation "documentLocation"
+#define NID_documentLocation 472
+#define OBJ_documentLocation 0L, 9L, 2342L, 19200300L, 100L, 1L, 15L
+
+#define LN_homeTelephoneNumber "homeTelephoneNumber"
+#define NID_homeTelephoneNumber 473
+#define OBJ_homeTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 20L
+
+#define SN_secretary "secretary"
+#define NID_secretary 474
+#define OBJ_secretary 0L, 9L, 2342L, 19200300L, 100L, 1L, 21L
+
+#define LN_otherMailbox "otherMailbox"
+#define NID_otherMailbox 475
+#define OBJ_otherMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 22L
+
+#define LN_lastModifiedTime "lastModifiedTime"
+#define NID_lastModifiedTime 476
+#define OBJ_lastModifiedTime 0L, 9L, 2342L, 19200300L, 100L, 1L, 23L
+
+#define LN_lastModifiedBy "lastModifiedBy"
+#define NID_lastModifiedBy 477
+#define OBJ_lastModifiedBy 0L, 9L, 2342L, 19200300L, 100L, 1L, 24L
+
+#define LN_aRecord "aRecord"
+#define NID_aRecord 478
+#define OBJ_aRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 26L
+
+#define LN_pilotAttributeType27 "pilotAttributeType27"
+#define NID_pilotAttributeType27 479
+#define OBJ_pilotAttributeType27 0L, 9L, 2342L, 19200300L, 100L, 1L, 27L
+
+#define LN_mXRecord "mXRecord"
+#define NID_mXRecord 480
+#define OBJ_mXRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 28L
+
+#define LN_nSRecord "nSRecord"
+#define NID_nSRecord 481
+#define OBJ_nSRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 29L
+
+#define LN_sOARecord "sOARecord"
+#define NID_sOARecord 482
+#define OBJ_sOARecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 30L
+
+#define LN_cNAMERecord "cNAMERecord"
+#define NID_cNAMERecord 483
+#define OBJ_cNAMERecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 31L
+
+#define LN_associatedDomain "associatedDomain"
+#define NID_associatedDomain 484
+#define OBJ_associatedDomain 0L, 9L, 2342L, 19200300L, 100L, 1L, 37L
+
+#define LN_associatedName "associatedName"
+#define NID_associatedName 485
+#define OBJ_associatedName 0L, 9L, 2342L, 19200300L, 100L, 1L, 38L
+
+#define LN_homePostalAddress "homePostalAddress"
+#define NID_homePostalAddress 486
+#define OBJ_homePostalAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 39L
+
+#define LN_personalTitle "personalTitle"
+#define NID_personalTitle 487
+#define OBJ_personalTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 40L
+
+#define LN_mobileTelephoneNumber "mobileTelephoneNumber"
+#define NID_mobileTelephoneNumber 488
+#define OBJ_mobileTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 41L
+
+#define LN_pagerTelephoneNumber "pagerTelephoneNumber"
+#define NID_pagerTelephoneNumber 489
+#define OBJ_pagerTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 42L
+
+#define LN_friendlyCountryName "friendlyCountryName"
+#define NID_friendlyCountryName 490
+#define OBJ_friendlyCountryName 0L, 9L, 2342L, 19200300L, 100L, 1L, 43L
+
+#define LN_organizationalStatus "organizationalStatus"
+#define NID_organizationalStatus 491
+#define OBJ_organizationalStatus 0L, 9L, 2342L, 19200300L, 100L, 1L, 45L
+
+#define LN_janetMailbox "janetMailbox"
+#define NID_janetMailbox 492
+#define OBJ_janetMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 46L
+
+#define LN_mailPreferenceOption "mailPreferenceOption"
+#define NID_mailPreferenceOption 493
+#define OBJ_mailPreferenceOption 0L, 9L, 2342L, 19200300L, 100L, 1L, 47L
+
+#define LN_buildingName "buildingName"
+#define NID_buildingName 494
+#define OBJ_buildingName 0L, 9L, 2342L, 19200300L, 100L, 1L, 48L
+
+#define LN_dSAQuality "dSAQuality"
+#define NID_dSAQuality 495
+#define OBJ_dSAQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 49L
+
+#define LN_singleLevelQuality "singleLevelQuality"
+#define NID_singleLevelQuality 496
+#define OBJ_singleLevelQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 50L
+
+#define LN_subtreeMinimumQuality "subtreeMinimumQuality"
+#define NID_subtreeMinimumQuality 497
+#define OBJ_subtreeMinimumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 51L
+
+#define LN_subtreeMaximumQuality "subtreeMaximumQuality"
+#define NID_subtreeMaximumQuality 498
+#define OBJ_subtreeMaximumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 52L
+
+#define LN_personalSignature "personalSignature"
+#define NID_personalSignature 499
+#define OBJ_personalSignature 0L, 9L, 2342L, 19200300L, 100L, 1L, 53L
+
+#define LN_dITRedirect "dITRedirect"
+#define NID_dITRedirect 500
+#define OBJ_dITRedirect 0L, 9L, 2342L, 19200300L, 100L, 1L, 54L
+
+#define SN_audio "audio"
+#define NID_audio 501
+#define OBJ_audio 0L, 9L, 2342L, 19200300L, 100L, 1L, 55L
+
+#define LN_documentPublisher "documentPublisher"
+#define NID_documentPublisher 502
+#define OBJ_documentPublisher 0L, 9L, 2342L, 19200300L, 100L, 1L, 56L
+
+#define LN_x500UniqueIdentifier "x500UniqueIdentifier"
+#define NID_x500UniqueIdentifier 503
+#define OBJ_x500UniqueIdentifier 2L, 5L, 4L, 45L
+
+#define SN_mime_mhs "mime-mhs"
+#define LN_mime_mhs "MIME MHS"
+#define NID_mime_mhs 504
+#define OBJ_mime_mhs 1L, 3L, 6L, 1L, 7L, 1L
+
+#define SN_mime_mhs_headings "mime-mhs-headings"
+#define LN_mime_mhs_headings "mime-mhs-headings"
+#define NID_mime_mhs_headings 505
+#define OBJ_mime_mhs_headings 1L, 3L, 6L, 1L, 7L, 1L, 1L
+
+#define SN_mime_mhs_bodies "mime-mhs-bodies"
+#define LN_mime_mhs_bodies "mime-mhs-bodies"
+#define NID_mime_mhs_bodies 506
+#define OBJ_mime_mhs_bodies 1L, 3L, 6L, 1L, 7L, 1L, 2L
+
+#define SN_id_hex_partial_message "id-hex-partial-message"
+#define LN_id_hex_partial_message "id-hex-partial-message"
+#define NID_id_hex_partial_message 507
+#define OBJ_id_hex_partial_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 1L
+
+#define SN_id_hex_multipart_message "id-hex-multipart-message"
+#define LN_id_hex_multipart_message "id-hex-multipart-message"
+#define NID_id_hex_multipart_message 508
+#define OBJ_id_hex_multipart_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 2L
+
+#define LN_generationQualifier "generationQualifier"
+#define NID_generationQualifier 509
+#define OBJ_generationQualifier 2L, 5L, 4L, 44L
+
+#define LN_pseudonym "pseudonym"
+#define NID_pseudonym 510
+#define OBJ_pseudonym 2L, 5L, 4L, 65L
+
+#define SN_id_set "id-set"
+#define LN_id_set "Secure Electronic Transactions"
+#define NID_id_set 512
+#define OBJ_id_set 2L, 23L, 42L
+
+#define SN_set_ctype "set-ctype"
+#define LN_set_ctype "content types"
+#define NID_set_ctype 513
+#define OBJ_set_ctype 2L, 23L, 42L, 0L
+
+#define SN_set_msgExt "set-msgExt"
+#define LN_set_msgExt "message extensions"
+#define NID_set_msgExt 514
+#define OBJ_set_msgExt 2L, 23L, 42L, 1L
+
+#define SN_set_attr "set-attr"
+#define NID_set_attr 515
+#define OBJ_set_attr 2L, 23L, 42L, 3L
+
+#define SN_set_policy "set-policy"
+#define NID_set_policy 516
+#define OBJ_set_policy 2L, 23L, 42L, 5L
+
+#define SN_set_certExt "set-certExt"
+#define LN_set_certExt "certificate extensions"
+#define NID_set_certExt 517
+#define OBJ_set_certExt 2L, 23L, 42L, 7L
+
+#define SN_set_brand "set-brand"
+#define NID_set_brand 518
+#define OBJ_set_brand 2L, 23L, 42L, 8L
+
+#define SN_setct_PANData "setct-PANData"
+#define NID_setct_PANData 519
+#define OBJ_setct_PANData 2L, 23L, 42L, 0L, 0L
+
+#define SN_setct_PANToken "setct-PANToken"
+#define NID_setct_PANToken 520
+#define OBJ_setct_PANToken 2L, 23L, 42L, 0L, 1L
+
+#define SN_setct_PANOnly "setct-PANOnly"
+#define NID_setct_PANOnly 521
+#define OBJ_setct_PANOnly 2L, 23L, 42L, 0L, 2L
+
+#define SN_setct_OIData "setct-OIData"
+#define NID_setct_OIData 522
+#define OBJ_setct_OIData 2L, 23L, 42L, 0L, 3L
+
+#define SN_setct_PI "setct-PI"
+#define NID_setct_PI 523
+#define OBJ_setct_PI 2L, 23L, 42L, 0L, 4L
+
+#define SN_setct_PIData "setct-PIData"
+#define NID_setct_PIData 524
+#define OBJ_setct_PIData 2L, 23L, 42L, 0L, 5L
+
+#define SN_setct_PIDataUnsigned "setct-PIDataUnsigned"
+#define NID_setct_PIDataUnsigned 525
+#define OBJ_setct_PIDataUnsigned 2L, 23L, 42L, 0L, 6L
+
+#define SN_setct_HODInput "setct-HODInput"
+#define NID_setct_HODInput 526
+#define OBJ_setct_HODInput 2L, 23L, 42L, 0L, 7L
+
+#define SN_setct_AuthResBaggage "setct-AuthResBaggage"
+#define NID_setct_AuthResBaggage 527
+#define OBJ_setct_AuthResBaggage 2L, 23L, 42L, 0L, 8L
+
+#define SN_setct_AuthRevReqBaggage "setct-AuthRevReqBaggage"
+#define NID_setct_AuthRevReqBaggage 528
+#define OBJ_setct_AuthRevReqBaggage 2L, 23L, 42L, 0L, 9L
+
+#define SN_setct_AuthRevResBaggage "setct-AuthRevResBaggage"
+#define NID_setct_AuthRevResBaggage 529
+#define OBJ_setct_AuthRevResBaggage 2L, 23L, 42L, 0L, 10L
+
+#define SN_setct_CapTokenSeq "setct-CapTokenSeq"
+#define NID_setct_CapTokenSeq 530
+#define OBJ_setct_CapTokenSeq 2L, 23L, 42L, 0L, 11L
+
+#define SN_setct_PInitResData "setct-PInitResData"
+#define NID_setct_PInitResData 531
+#define OBJ_setct_PInitResData 2L, 23L, 42L, 0L, 12L
+
+#define SN_setct_PI_TBS "setct-PI-TBS"
+#define NID_setct_PI_TBS 532
+#define OBJ_setct_PI_TBS 2L, 23L, 42L, 0L, 13L
+
+#define SN_setct_PResData "setct-PResData"
+#define NID_setct_PResData 533
+#define OBJ_setct_PResData 2L, 23L, 42L, 0L, 14L
+
+#define SN_setct_AuthReqTBS "setct-AuthReqTBS"
+#define NID_setct_AuthReqTBS 534
+#define OBJ_setct_AuthReqTBS 2L, 23L, 42L, 0L, 16L
+
+#define SN_setct_AuthResTBS "setct-AuthResTBS"
+#define NID_setct_AuthResTBS 535
+#define OBJ_setct_AuthResTBS 2L, 23L, 42L, 0L, 17L
+
+#define SN_setct_AuthResTBSX "setct-AuthResTBSX"
+#define NID_setct_AuthResTBSX 536
+#define OBJ_setct_AuthResTBSX 2L, 23L, 42L, 0L, 18L
+
+#define SN_setct_AuthTokenTBS "setct-AuthTokenTBS"
+#define NID_setct_AuthTokenTBS 537
+#define OBJ_setct_AuthTokenTBS 2L, 23L, 42L, 0L, 19L
+
+#define SN_setct_CapTokenData "setct-CapTokenData"
+#define NID_setct_CapTokenData 538
+#define OBJ_setct_CapTokenData 2L, 23L, 42L, 0L, 20L
+
+#define SN_setct_CapTokenTBS "setct-CapTokenTBS"
+#define NID_setct_CapTokenTBS 539
+#define OBJ_setct_CapTokenTBS 2L, 23L, 42L, 0L, 21L
+
+#define SN_setct_AcqCardCodeMsg "setct-AcqCardCodeMsg"
+#define NID_setct_AcqCardCodeMsg 540
+#define OBJ_setct_AcqCardCodeMsg 2L, 23L, 42L, 0L, 22L
+
+#define SN_setct_AuthRevReqTBS "setct-AuthRevReqTBS"
+#define NID_setct_AuthRevReqTBS 541
+#define OBJ_setct_AuthRevReqTBS 2L, 23L, 42L, 0L, 23L
+
+#define SN_setct_AuthRevResData "setct-AuthRevResData"
+#define NID_setct_AuthRevResData 542
+#define OBJ_setct_AuthRevResData 2L, 23L, 42L, 0L, 24L
+
+#define SN_setct_AuthRevResTBS "setct-AuthRevResTBS"
+#define NID_setct_AuthRevResTBS 543
+#define OBJ_setct_AuthRevResTBS 2L, 23L, 42L, 0L, 25L
+
+#define SN_setct_CapReqTBS "setct-CapReqTBS"
+#define NID_setct_CapReqTBS 544
+#define OBJ_setct_CapReqTBS 2L, 23L, 42L, 0L, 26L
+
+#define SN_setct_CapReqTBSX "setct-CapReqTBSX"
+#define NID_setct_CapReqTBSX 545
+#define OBJ_setct_CapReqTBSX 2L, 23L, 42L, 0L, 27L
+
+#define SN_setct_CapResData "setct-CapResData"
+#define NID_setct_CapResData 546
+#define OBJ_setct_CapResData 2L, 23L, 42L, 0L, 28L
+
+#define SN_setct_CapRevReqTBS "setct-CapRevReqTBS"
+#define NID_setct_CapRevReqTBS 547
+#define OBJ_setct_CapRevReqTBS 2L, 23L, 42L, 0L, 29L
+
+#define SN_setct_CapRevReqTBSX "setct-CapRevReqTBSX"
+#define NID_setct_CapRevReqTBSX 548
+#define OBJ_setct_CapRevReqTBSX 2L, 23L, 42L, 0L, 30L
+
+#define SN_setct_CapRevResData "setct-CapRevResData"
+#define NID_setct_CapRevResData 549
+#define OBJ_setct_CapRevResData 2L, 23L, 42L, 0L, 31L
+
+#define SN_setct_CredReqTBS "setct-CredReqTBS"
+#define NID_setct_CredReqTBS 550
+#define OBJ_setct_CredReqTBS 2L, 23L, 42L, 0L, 32L
+
+#define SN_setct_CredReqTBSX "setct-CredReqTBSX"
+#define NID_setct_CredReqTBSX 551
+#define OBJ_setct_CredReqTBSX 2L, 23L, 42L, 0L, 33L
+
+#define SN_setct_CredResData "setct-CredResData"
+#define NID_setct_CredResData 552
+#define OBJ_setct_CredResData 2L, 23L, 42L, 0L, 34L
+
+#define SN_setct_CredRevReqTBS "setct-CredRevReqTBS"
+#define NID_setct_CredRevReqTBS 553
+#define OBJ_setct_CredRevReqTBS 2L, 23L, 42L, 0L, 35L
+
+#define SN_setct_CredRevReqTBSX "setct-CredRevReqTBSX"
+#define NID_setct_CredRevReqTBSX 554
+#define OBJ_setct_CredRevReqTBSX 2L, 23L, 42L, 0L, 36L
+
+#define SN_setct_CredRevResData "setct-CredRevResData"
+#define NID_setct_CredRevResData 555
+#define OBJ_setct_CredRevResData 2L, 23L, 42L, 0L, 37L
+
+#define SN_setct_PCertReqData "setct-PCertReqData"
+#define NID_setct_PCertReqData 556
+#define OBJ_setct_PCertReqData 2L, 23L, 42L, 0L, 38L
+
+#define SN_setct_PCertResTBS "setct-PCertResTBS"
+#define NID_setct_PCertResTBS 557
+#define OBJ_setct_PCertResTBS 2L, 23L, 42L, 0L, 39L
+
+#define SN_setct_BatchAdminReqData "setct-BatchAdminReqData"
+#define NID_setct_BatchAdminReqData 558
+#define OBJ_setct_BatchAdminReqData 2L, 23L, 42L, 0L, 40L
+
+#define SN_setct_BatchAdminResData "setct-BatchAdminResData"
+#define NID_setct_BatchAdminResData 559
+#define OBJ_setct_BatchAdminResData 2L, 23L, 42L, 0L, 41L
+
+#define SN_setct_CardCInitResTBS "setct-CardCInitResTBS"
+#define NID_setct_CardCInitResTBS 560
+#define OBJ_setct_CardCInitResTBS 2L, 23L, 42L, 0L, 42L
+
+#define SN_setct_MeAqCInitResTBS "setct-MeAqCInitResTBS"
+#define NID_setct_MeAqCInitResTBS 561
+#define OBJ_setct_MeAqCInitResTBS 2L, 23L, 42L, 0L, 43L
+
+#define SN_setct_RegFormResTBS "setct-RegFormResTBS"
+#define NID_setct_RegFormResTBS 562
+#define OBJ_setct_RegFormResTBS 2L, 23L, 42L, 0L, 44L
+
+#define SN_setct_CertReqData "setct-CertReqData"
+#define NID_setct_CertReqData 563
+#define OBJ_setct_CertReqData 2L, 23L, 42L, 0L, 45L
+
+#define SN_setct_CertReqTBS "setct-CertReqTBS"
+#define NID_setct_CertReqTBS 564
+#define OBJ_setct_CertReqTBS 2L, 23L, 42L, 0L, 46L
+
+#define SN_setct_CertResData "setct-CertResData"
+#define NID_setct_CertResData 565
+#define OBJ_setct_CertResData 2L, 23L, 42L, 0L, 47L
+
+#define SN_setct_CertInqReqTBS "setct-CertInqReqTBS"
+#define NID_setct_CertInqReqTBS 566
+#define OBJ_setct_CertInqReqTBS 2L, 23L, 42L, 0L, 48L
+
+#define SN_setct_ErrorTBS "setct-ErrorTBS"
+#define NID_setct_ErrorTBS 567
+#define OBJ_setct_ErrorTBS 2L, 23L, 42L, 0L, 49L
+
+#define SN_setct_PIDualSignedTBE "setct-PIDualSignedTBE"
+#define NID_setct_PIDualSignedTBE 568
+#define OBJ_setct_PIDualSignedTBE 2L, 23L, 42L, 0L, 50L
+
+#define SN_setct_PIUnsignedTBE "setct-PIUnsignedTBE"
+#define NID_setct_PIUnsignedTBE 569
+#define OBJ_setct_PIUnsignedTBE 2L, 23L, 42L, 0L, 51L
+
+#define SN_setct_AuthReqTBE "setct-AuthReqTBE"
+#define NID_setct_AuthReqTBE 570
+#define OBJ_setct_AuthReqTBE 2L, 23L, 42L, 0L, 52L
+
+#define SN_setct_AuthResTBE "setct-AuthResTBE"
+#define NID_setct_AuthResTBE 571
+#define OBJ_setct_AuthResTBE 2L, 23L, 42L, 0L, 53L
+
+#define SN_setct_AuthResTBEX "setct-AuthResTBEX"
+#define NID_setct_AuthResTBEX 572
+#define OBJ_setct_AuthResTBEX 2L, 23L, 42L, 0L, 54L
+
+#define SN_setct_AuthTokenTBE "setct-AuthTokenTBE"
+#define NID_setct_AuthTokenTBE 573
+#define OBJ_setct_AuthTokenTBE 2L, 23L, 42L, 0L, 55L
+
+#define SN_setct_CapTokenTBE "setct-CapTokenTBE"
+#define NID_setct_CapTokenTBE 574
+#define OBJ_setct_CapTokenTBE 2L, 23L, 42L, 0L, 56L
+
+#define SN_setct_CapTokenTBEX "setct-CapTokenTBEX"
+#define NID_setct_CapTokenTBEX 575
+#define OBJ_setct_CapTokenTBEX 2L, 23L, 42L, 0L, 57L
+
+#define SN_setct_AcqCardCodeMsgTBE "setct-AcqCardCodeMsgTBE"
+#define NID_setct_AcqCardCodeMsgTBE 576
+#define OBJ_setct_AcqCardCodeMsgTBE 2L, 23L, 42L, 0L, 58L
+
+#define SN_setct_AuthRevReqTBE "setct-AuthRevReqTBE"
+#define NID_setct_AuthRevReqTBE 577
+#define OBJ_setct_AuthRevReqTBE 2L, 23L, 42L, 0L, 59L
+
+#define SN_setct_AuthRevResTBE "setct-AuthRevResTBE"
+#define NID_setct_AuthRevResTBE 578
+#define OBJ_setct_AuthRevResTBE 2L, 23L, 42L, 0L, 60L
+
+#define SN_setct_AuthRevResTBEB "setct-AuthRevResTBEB"
+#define NID_setct_AuthRevResTBEB 579
+#define OBJ_setct_AuthRevResTBEB 2L, 23L, 42L, 0L, 61L
+
+#define SN_setct_CapReqTBE "setct-CapReqTBE"
+#define NID_setct_CapReqTBE 580
+#define OBJ_setct_CapReqTBE 2L, 23L, 42L, 0L, 62L
+
+#define SN_setct_CapReqTBEX "setct-CapReqTBEX"
+#define NID_setct_CapReqTBEX 581
+#define OBJ_setct_CapReqTBEX 2L, 23L, 42L, 0L, 63L
+
+#define SN_setct_CapResTBE "setct-CapResTBE"
+#define NID_setct_CapResTBE 582
+#define OBJ_setct_CapResTBE 2L, 23L, 42L, 0L, 64L
+
+#define SN_setct_CapRevReqTBE "setct-CapRevReqTBE"
+#define NID_setct_CapRevReqTBE 583
+#define OBJ_setct_CapRevReqTBE 2L, 23L, 42L, 0L, 65L
+
+#define SN_setct_CapRevReqTBEX "setct-CapRevReqTBEX"
+#define NID_setct_CapRevReqTBEX 584
+#define OBJ_setct_CapRevReqTBEX 2L, 23L, 42L, 0L, 66L
+
+#define SN_setct_CapRevResTBE "setct-CapRevResTBE"
+#define NID_setct_CapRevResTBE 585
+#define OBJ_setct_CapRevResTBE 2L, 23L, 42L, 0L, 67L
+
+#define SN_setct_CredReqTBE "setct-CredReqTBE"
+#define NID_setct_CredReqTBE 586
+#define OBJ_setct_CredReqTBE 2L, 23L, 42L, 0L, 68L
+
+#define SN_setct_CredReqTBEX "setct-CredReqTBEX"
+#define NID_setct_CredReqTBEX 587
+#define OBJ_setct_CredReqTBEX 2L, 23L, 42L, 0L, 69L
+
+#define SN_setct_CredResTBE "setct-CredResTBE"
+#define NID_setct_CredResTBE 588
+#define OBJ_setct_CredResTBE 2L, 23L, 42L, 0L, 70L
+
+#define SN_setct_CredRevReqTBE "setct-CredRevReqTBE"
+#define NID_setct_CredRevReqTBE 589
+#define OBJ_setct_CredRevReqTBE 2L, 23L, 42L, 0L, 71L
+
+#define SN_setct_CredRevReqTBEX "setct-CredRevReqTBEX"
+#define NID_setct_CredRevReqTBEX 590
+#define OBJ_setct_CredRevReqTBEX 2L, 23L, 42L, 0L, 72L
+
+#define SN_setct_CredRevResTBE "setct-CredRevResTBE"
+#define NID_setct_CredRevResTBE 591
+#define OBJ_setct_CredRevResTBE 2L, 23L, 42L, 0L, 73L
+
+#define SN_setct_BatchAdminReqTBE "setct-BatchAdminReqTBE"
+#define NID_setct_BatchAdminReqTBE 592
+#define OBJ_setct_BatchAdminReqTBE 2L, 23L, 42L, 0L, 74L
+
+#define SN_setct_BatchAdminResTBE "setct-BatchAdminResTBE"
+#define NID_setct_BatchAdminResTBE 593
+#define OBJ_setct_BatchAdminResTBE 2L, 23L, 42L, 0L, 75L
+
+#define SN_setct_RegFormReqTBE "setct-RegFormReqTBE"
+#define NID_setct_RegFormReqTBE 594
+#define OBJ_setct_RegFormReqTBE 2L, 23L, 42L, 0L, 76L
+
+#define SN_setct_CertReqTBE "setct-CertReqTBE"
+#define NID_setct_CertReqTBE 595
+#define OBJ_setct_CertReqTBE 2L, 23L, 42L, 0L, 77L
+
+#define SN_setct_CertReqTBEX "setct-CertReqTBEX"
+#define NID_setct_CertReqTBEX 596
+#define OBJ_setct_CertReqTBEX 2L, 23L, 42L, 0L, 78L
+
+#define SN_setct_CertResTBE "setct-CertResTBE"
+#define NID_setct_CertResTBE 597
+#define OBJ_setct_CertResTBE 2L, 23L, 42L, 0L, 79L
+
+#define SN_setct_CRLNotificationTBS "setct-CRLNotificationTBS"
+#define NID_setct_CRLNotificationTBS 598
+#define OBJ_setct_CRLNotificationTBS 2L, 23L, 42L, 0L, 80L
+
+#define SN_setct_CRLNotificationResTBS "setct-CRLNotificationResTBS"
+#define NID_setct_CRLNotificationResTBS 599
+#define OBJ_setct_CRLNotificationResTBS 2L, 23L, 42L, 0L, 81L
+
+#define SN_setct_BCIDistributionTBS "setct-BCIDistributionTBS"
+#define NID_setct_BCIDistributionTBS 600
+#define OBJ_setct_BCIDistributionTBS 2L, 23L, 42L, 0L, 82L
+
+#define SN_setext_genCrypt "setext-genCrypt"
+#define LN_setext_genCrypt "generic cryptogram"
+#define NID_setext_genCrypt 601
+#define OBJ_setext_genCrypt 2L, 23L, 42L, 1L, 1L
+
+#define SN_setext_miAuth "setext-miAuth"
+#define LN_setext_miAuth "merchant initiated auth"
+#define NID_setext_miAuth 602
+#define OBJ_setext_miAuth 2L, 23L, 42L, 1L, 3L
+
+#define SN_setext_pinSecure "setext-pinSecure"
+#define NID_setext_pinSecure 603
+#define OBJ_setext_pinSecure 2L, 23L, 42L, 1L, 4L
+
+#define SN_setext_pinAny "setext-pinAny"
+#define NID_setext_pinAny 604
+#define OBJ_setext_pinAny 2L, 23L, 42L, 1L, 5L
+
+#define SN_setext_track2 "setext-track2"
+#define NID_setext_track2 605
+#define OBJ_setext_track2 2L, 23L, 42L, 1L, 7L
+
+#define SN_setext_cv "setext-cv"
+#define LN_setext_cv "additional verification"
+#define NID_setext_cv 606
+#define OBJ_setext_cv 2L, 23L, 42L, 1L, 8L
+
+#define SN_set_policy_root "set-policy-root"
+#define NID_set_policy_root 607
+#define OBJ_set_policy_root 2L, 23L, 42L, 5L, 0L
+
+#define SN_setCext_hashedRoot "setCext-hashedRoot"
+#define NID_setCext_hashedRoot 608
+#define OBJ_setCext_hashedRoot 2L, 23L, 42L, 7L, 0L
+
+#define SN_setCext_certType "setCext-certType"
+#define NID_setCext_certType 609
+#define OBJ_setCext_certType 2L, 23L, 42L, 7L, 1L
+
+#define SN_setCext_merchData "setCext-merchData"
+#define NID_setCext_merchData 610
+#define OBJ_setCext_merchData 2L, 23L, 42L, 7L, 2L
+
+#define SN_setCext_cCertRequired "setCext-cCertRequired"
+#define NID_setCext_cCertRequired 611
+#define OBJ_setCext_cCertRequired 2L, 23L, 42L, 7L, 3L
+
+#define SN_setCext_tunneling "setCext-tunneling"
+#define NID_setCext_tunneling 612
+#define OBJ_setCext_tunneling 2L, 23L, 42L, 7L, 4L
+
+#define SN_setCext_setExt "setCext-setExt"
+#define NID_setCext_setExt 613
+#define OBJ_setCext_setExt 2L, 23L, 42L, 7L, 5L
+
+#define SN_setCext_setQualf "setCext-setQualf"
+#define NID_setCext_setQualf 614
+#define OBJ_setCext_setQualf 2L, 23L, 42L, 7L, 6L
+
+#define SN_setCext_PGWYcapabilities "setCext-PGWYcapabilities"
+#define NID_setCext_PGWYcapabilities 615
+#define OBJ_setCext_PGWYcapabilities 2L, 23L, 42L, 7L, 7L
+
+#define SN_setCext_TokenIdentifier "setCext-TokenIdentifier"
+#define NID_setCext_TokenIdentifier 616
+#define OBJ_setCext_TokenIdentifier 2L, 23L, 42L, 7L, 8L
+
+#define SN_setCext_Track2Data "setCext-Track2Data"
+#define NID_setCext_Track2Data 617
+#define OBJ_setCext_Track2Data 2L, 23L, 42L, 7L, 9L
+
+#define SN_setCext_TokenType "setCext-TokenType"
+#define NID_setCext_TokenType 618
+#define OBJ_setCext_TokenType 2L, 23L, 42L, 7L, 10L
+
+#define SN_setCext_IssuerCapabilities "setCext-IssuerCapabilities"
+#define NID_setCext_IssuerCapabilities 619
+#define OBJ_setCext_IssuerCapabilities 2L, 23L, 42L, 7L, 11L
+
+#define SN_setAttr_Cert "setAttr-Cert"
+#define NID_setAttr_Cert 620
+#define OBJ_setAttr_Cert 2L, 23L, 42L, 3L, 0L
+
+#define SN_setAttr_PGWYcap "setAttr-PGWYcap"
+#define LN_setAttr_PGWYcap "payment gateway capabilities"
+#define NID_setAttr_PGWYcap 621
+#define OBJ_setAttr_PGWYcap 2L, 23L, 42L, 3L, 1L
+
+#define SN_setAttr_TokenType "setAttr-TokenType"
+#define NID_setAttr_TokenType 622
+#define OBJ_setAttr_TokenType 2L, 23L, 42L, 3L, 2L
+
+#define SN_setAttr_IssCap "setAttr-IssCap"
+#define LN_setAttr_IssCap "issuer capabilities"
+#define NID_setAttr_IssCap 623
+#define OBJ_setAttr_IssCap 2L, 23L, 42L, 3L, 3L
+
+#define SN_set_rootKeyThumb "set-rootKeyThumb"
+#define NID_set_rootKeyThumb 624
+#define OBJ_set_rootKeyThumb 2L, 23L, 42L, 3L, 0L, 0L
+
+#define SN_set_addPolicy "set-addPolicy"
+#define NID_set_addPolicy 625
+#define OBJ_set_addPolicy 2L, 23L, 42L, 3L, 0L, 1L
+
+#define SN_setAttr_Token_EMV "setAttr-Token-EMV"
+#define NID_setAttr_Token_EMV 626
+#define OBJ_setAttr_Token_EMV 2L, 23L, 42L, 3L, 2L, 1L
+
+#define SN_setAttr_Token_B0Prime "setAttr-Token-B0Prime"
+#define NID_setAttr_Token_B0Prime 627
+#define OBJ_setAttr_Token_B0Prime 2L, 23L, 42L, 3L, 2L, 2L
+
+#define SN_setAttr_IssCap_CVM "setAttr-IssCap-CVM"
+#define NID_setAttr_IssCap_CVM 628
+#define OBJ_setAttr_IssCap_CVM 2L, 23L, 42L, 3L, 3L, 3L
+
+#define SN_setAttr_IssCap_T2 "setAttr-IssCap-T2"
+#define NID_setAttr_IssCap_T2 629
+#define OBJ_setAttr_IssCap_T2 2L, 23L, 42L, 3L, 3L, 4L
+
+#define SN_setAttr_IssCap_Sig "setAttr-IssCap-Sig"
+#define NID_setAttr_IssCap_Sig 630
+#define OBJ_setAttr_IssCap_Sig 2L, 23L, 42L, 3L, 3L, 5L
+
+#define SN_setAttr_GenCryptgrm "setAttr-GenCryptgrm"
+#define LN_setAttr_GenCryptgrm "generate cryptogram"
+#define NID_setAttr_GenCryptgrm 631
+#define OBJ_setAttr_GenCryptgrm 2L, 23L, 42L, 3L, 3L, 3L, 1L
+
+#define SN_setAttr_T2Enc "setAttr-T2Enc"
+#define LN_setAttr_T2Enc "encrypted track 2"
+#define NID_setAttr_T2Enc 632
+#define OBJ_setAttr_T2Enc 2L, 23L, 42L, 3L, 3L, 4L, 1L
+
+#define SN_setAttr_T2cleartxt "setAttr-T2cleartxt"
+#define LN_setAttr_T2cleartxt "cleartext track 2"
+#define NID_setAttr_T2cleartxt 633
+#define OBJ_setAttr_T2cleartxt 2L, 23L, 42L, 3L, 3L, 4L, 2L
+
+#define SN_setAttr_TokICCsig "setAttr-TokICCsig"
+#define LN_setAttr_TokICCsig "ICC or token signature"
+#define NID_setAttr_TokICCsig 634
+#define OBJ_setAttr_TokICCsig 2L, 23L, 42L, 3L, 3L, 5L, 1L
+
+#define SN_setAttr_SecDevSig "setAttr-SecDevSig"
+#define LN_setAttr_SecDevSig "secure device signature"
+#define NID_setAttr_SecDevSig 635
+#define OBJ_setAttr_SecDevSig 2L, 23L, 42L, 3L, 3L, 5L, 2L
+
+#define SN_set_brand_IATA_ATA "set-brand-IATA-ATA"
+#define NID_set_brand_IATA_ATA 636
+#define OBJ_set_brand_IATA_ATA 2L, 23L, 42L, 8L, 1L
+
+#define SN_set_brand_Diners "set-brand-Diners"
+#define NID_set_brand_Diners 637
+#define OBJ_set_brand_Diners 2L, 23L, 42L, 8L, 30L
+
+#define SN_set_brand_AmericanExpress "set-brand-AmericanExpress"
+#define NID_set_brand_AmericanExpress 638
+#define OBJ_set_brand_AmericanExpress 2L, 23L, 42L, 8L, 34L
+
+#define SN_set_brand_JCB "set-brand-JCB"
+#define NID_set_brand_JCB 639
+#define OBJ_set_brand_JCB 2L, 23L, 42L, 8L, 35L
+
+#define SN_set_brand_Visa "set-brand-Visa"
+#define NID_set_brand_Visa 640
+#define OBJ_set_brand_Visa 2L, 23L, 42L, 8L, 4L
+
+#define SN_set_brand_MasterCard "set-brand-MasterCard"
+#define NID_set_brand_MasterCard 641
+#define OBJ_set_brand_MasterCard 2L, 23L, 42L, 8L, 5L
+
+#define SN_set_brand_Novus "set-brand-Novus"
+#define NID_set_brand_Novus 642
+#define OBJ_set_brand_Novus 2L, 23L, 42L, 8L, 6011L
+
+#define SN_des_cdmf "DES-CDMF"
+#define LN_des_cdmf "des-cdmf"
+#define NID_des_cdmf 643
+#define OBJ_des_cdmf 1L, 2L, 840L, 113549L, 3L, 10L
+
+#define SN_rsaOAEPEncryptionSET "rsaOAEPEncryptionSET"
+#define NID_rsaOAEPEncryptionSET 644
+#define OBJ_rsaOAEPEncryptionSET 1L, 2L, 840L, 113549L, 1L, 1L, 6L
+
+#define SN_itu_t "ITU-T"
+#define LN_itu_t "itu-t"
+#define NID_itu_t 645
+#define OBJ_itu_t 0L
+
+#define SN_joint_iso_itu_t "JOINT-ISO-ITU-T"
+#define LN_joint_iso_itu_t "joint-iso-itu-t"
+#define NID_joint_iso_itu_t 646
+#define OBJ_joint_iso_itu_t 2L
+
+#define SN_international_organizations "international-organizations"
+#define LN_international_organizations "International Organizations"
+#define NID_international_organizations 647
+#define OBJ_international_organizations 2L, 23L
+
+#define SN_ms_smartcard_login "msSmartcardLogin"
+#define LN_ms_smartcard_login "Microsoft Smartcardlogin"
+#define NID_ms_smartcard_login 648
+#define OBJ_ms_smartcard_login 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 2L
+
+#define SN_ms_upn "msUPN"
+#define LN_ms_upn "Microsoft Universal Principal Name"
+#define NID_ms_upn 649
+#define OBJ_ms_upn 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 3L
+
+#define SN_aes_128_cfb1 "AES-128-CFB1"
+#define LN_aes_128_cfb1 "aes-128-cfb1"
+#define NID_aes_128_cfb1 650
+
+#define SN_aes_192_cfb1 "AES-192-CFB1"
+#define LN_aes_192_cfb1 "aes-192-cfb1"
+#define NID_aes_192_cfb1 651
+
+#define SN_aes_256_cfb1 "AES-256-CFB1"
+#define LN_aes_256_cfb1 "aes-256-cfb1"
+#define NID_aes_256_cfb1 652
+
+#define SN_aes_128_cfb8 "AES-128-CFB8"
+#define LN_aes_128_cfb8 "aes-128-cfb8"
+#define NID_aes_128_cfb8 653
+
+#define SN_aes_192_cfb8 "AES-192-CFB8"
+#define LN_aes_192_cfb8 "aes-192-cfb8"
+#define NID_aes_192_cfb8 654
+
+#define SN_aes_256_cfb8 "AES-256-CFB8"
+#define LN_aes_256_cfb8 "aes-256-cfb8"
+#define NID_aes_256_cfb8 655
+
+#define SN_des_cfb1 "DES-CFB1"
+#define LN_des_cfb1 "des-cfb1"
+#define NID_des_cfb1 656
+
+#define SN_des_cfb8 "DES-CFB8"
+#define LN_des_cfb8 "des-cfb8"
+#define NID_des_cfb8 657
+
+#define SN_des_ede3_cfb1 "DES-EDE3-CFB1"
+#define LN_des_ede3_cfb1 "des-ede3-cfb1"
+#define NID_des_ede3_cfb1 658
+
+#define SN_des_ede3_cfb8 "DES-EDE3-CFB8"
+#define LN_des_ede3_cfb8 "des-ede3-cfb8"
+#define NID_des_ede3_cfb8 659
+
+#define SN_streetAddress "street"
+#define LN_streetAddress "streetAddress"
+#define NID_streetAddress 660
+#define OBJ_streetAddress 2L, 5L, 4L, 9L
+
+#define LN_postalCode "postalCode"
+#define NID_postalCode 661
+#define OBJ_postalCode 2L, 5L, 4L, 17L
+
+#define SN_id_ppl "id-ppl"
+#define NID_id_ppl 662
+#define OBJ_id_ppl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L
+
+#define SN_proxyCertInfo "proxyCertInfo"
+#define LN_proxyCertInfo "Proxy Certificate Information"
+#define NID_proxyCertInfo 663
+#define OBJ_proxyCertInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 14L
+
+#define SN_id_ppl_anyLanguage "id-ppl-anyLanguage"
+#define LN_id_ppl_anyLanguage "Any language"
+#define NID_id_ppl_anyLanguage 664
+#define OBJ_id_ppl_anyLanguage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 0L
+
+#define SN_id_ppl_inheritAll "id-ppl-inheritAll"
+#define LN_id_ppl_inheritAll "Inherit all"
+#define NID_id_ppl_inheritAll 665
+#define OBJ_id_ppl_inheritAll 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 1L
+
+#define SN_name_constraints "nameConstraints"
+#define LN_name_constraints "X509v3 Name Constraints"
+#define NID_name_constraints 666
+#define OBJ_name_constraints 2L, 5L, 29L, 30L
+
+#define SN_Independent "id-ppl-independent"
+#define LN_Independent "Independent"
+#define NID_Independent 667
+#define OBJ_Independent 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 2L
+
+#define SN_sha256WithRSAEncryption "RSA-SHA256"
+#define LN_sha256WithRSAEncryption "sha256WithRSAEncryption"
+#define NID_sha256WithRSAEncryption 668
+#define OBJ_sha256WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 11L
+
+#define SN_sha384WithRSAEncryption "RSA-SHA384"
+#define LN_sha384WithRSAEncryption "sha384WithRSAEncryption"
+#define NID_sha384WithRSAEncryption 669
+#define OBJ_sha384WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 12L
+
+#define SN_sha512WithRSAEncryption "RSA-SHA512"
+#define LN_sha512WithRSAEncryption "sha512WithRSAEncryption"
+#define NID_sha512WithRSAEncryption 670
+#define OBJ_sha512WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 13L
+
+#define SN_sha224WithRSAEncryption "RSA-SHA224"
+#define LN_sha224WithRSAEncryption "sha224WithRSAEncryption"
+#define NID_sha224WithRSAEncryption 671
+#define OBJ_sha224WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 14L
+
+#define SN_sha256 "SHA256"
+#define LN_sha256 "sha256"
+#define NID_sha256 672
+#define OBJ_sha256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 1L
+
+#define SN_sha384 "SHA384"
+#define LN_sha384 "sha384"
+#define NID_sha384 673
+#define OBJ_sha384 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 2L
+
+#define SN_sha512 "SHA512"
+#define LN_sha512 "sha512"
+#define NID_sha512 674
+#define OBJ_sha512 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 3L
+
+#define SN_sha224 "SHA224"
+#define LN_sha224 "sha224"
+#define NID_sha224 675
+#define OBJ_sha224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 4L
+
+#define SN_identified_organization "identified-organization"
+#define NID_identified_organization 676
+#define OBJ_identified_organization 1L, 3L
+
+#define SN_certicom_arc "certicom-arc"
+#define NID_certicom_arc 677
+#define OBJ_certicom_arc 1L, 3L, 132L
+
+#define SN_wap "wap"
+#define NID_wap 678
+#define OBJ_wap 2L, 23L, 43L
+
+#define SN_wap_wsg "wap-wsg"
+#define NID_wap_wsg 679
+#define OBJ_wap_wsg 2L, 23L, 43L, 1L
+
+#define SN_X9_62_id_characteristic_two_basis "id-characteristic-two-basis"
+#define NID_X9_62_id_characteristic_two_basis 680
+#define OBJ_X9_62_id_characteristic_two_basis 1L, 2L, 840L, 10045L, 1L, 2L, 3L
+
+#define SN_X9_62_onBasis "onBasis"
+#define NID_X9_62_onBasis 681
+#define OBJ_X9_62_onBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 1L
+
+#define SN_X9_62_tpBasis "tpBasis"
+#define NID_X9_62_tpBasis 682
+#define OBJ_X9_62_tpBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 2L
+
+#define SN_X9_62_ppBasis "ppBasis"
+#define NID_X9_62_ppBasis 683
+#define OBJ_X9_62_ppBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 3L
+
+#define SN_X9_62_c2pnb163v1 "c2pnb163v1"
+#define NID_X9_62_c2pnb163v1 684
+#define OBJ_X9_62_c2pnb163v1 1L, 2L, 840L, 10045L, 3L, 0L, 1L
+
+#define SN_X9_62_c2pnb163v2 "c2pnb163v2"
+#define NID_X9_62_c2pnb163v2 685
+#define OBJ_X9_62_c2pnb163v2 1L, 2L, 840L, 10045L, 3L, 0L, 2L
+
+#define SN_X9_62_c2pnb163v3 "c2pnb163v3"
+#define NID_X9_62_c2pnb163v3 686
+#define OBJ_X9_62_c2pnb163v3 1L, 2L, 840L, 10045L, 3L, 0L, 3L
+
+#define SN_X9_62_c2pnb176v1 "c2pnb176v1"
+#define NID_X9_62_c2pnb176v1 687
+#define OBJ_X9_62_c2pnb176v1 1L, 2L, 840L, 10045L, 3L, 0L, 4L
+
+#define SN_X9_62_c2tnb191v1 "c2tnb191v1"
+#define NID_X9_62_c2tnb191v1 688
+#define OBJ_X9_62_c2tnb191v1 1L, 2L, 840L, 10045L, 3L, 0L, 5L
+
+#define SN_X9_62_c2tnb191v2 "c2tnb191v2"
+#define NID_X9_62_c2tnb191v2 689
+#define OBJ_X9_62_c2tnb191v2 1L, 2L, 840L, 10045L, 3L, 0L, 6L
+
+#define SN_X9_62_c2tnb191v3 "c2tnb191v3"
+#define NID_X9_62_c2tnb191v3 690
+#define OBJ_X9_62_c2tnb191v3 1L, 2L, 840L, 10045L, 3L, 0L, 7L
+
+#define SN_X9_62_c2onb191v4 "c2onb191v4"
+#define NID_X9_62_c2onb191v4 691
+#define OBJ_X9_62_c2onb191v4 1L, 2L, 840L, 10045L, 3L, 0L, 8L
+
+#define SN_X9_62_c2onb191v5 "c2onb191v5"
+#define NID_X9_62_c2onb191v5 692
+#define OBJ_X9_62_c2onb191v5 1L, 2L, 840L, 10045L, 3L, 0L, 9L
+
+#define SN_X9_62_c2pnb208w1 "c2pnb208w1"
+#define NID_X9_62_c2pnb208w1 693
+#define OBJ_X9_62_c2pnb208w1 1L, 2L, 840L, 10045L, 3L, 0L, 10L
+
+#define SN_X9_62_c2tnb239v1 "c2tnb239v1"
+#define NID_X9_62_c2tnb239v1 694
+#define OBJ_X9_62_c2tnb239v1 1L, 2L, 840L, 10045L, 3L, 0L, 11L
+
+#define SN_X9_62_c2tnb239v2 "c2tnb239v2"
+#define NID_X9_62_c2tnb239v2 695
+#define OBJ_X9_62_c2tnb239v2 1L, 2L, 840L, 10045L, 3L, 0L, 12L
+
+#define SN_X9_62_c2tnb239v3 "c2tnb239v3"
+#define NID_X9_62_c2tnb239v3 696
+#define OBJ_X9_62_c2tnb239v3 1L, 2L, 840L, 10045L, 3L, 0L, 13L
+
+#define SN_X9_62_c2onb239v4 "c2onb239v4"
+#define NID_X9_62_c2onb239v4 697
+#define OBJ_X9_62_c2onb239v4 1L, 2L, 840L, 10045L, 3L, 0L, 14L
+
+#define SN_X9_62_c2onb239v5 "c2onb239v5"
+#define NID_X9_62_c2onb239v5 698
+#define OBJ_X9_62_c2onb239v5 1L, 2L, 840L, 10045L, 3L, 0L, 15L
+
+#define SN_X9_62_c2pnb272w1 "c2pnb272w1"
+#define NID_X9_62_c2pnb272w1 699
+#define OBJ_X9_62_c2pnb272w1 1L, 2L, 840L, 10045L, 3L, 0L, 16L
+
+#define SN_X9_62_c2pnb304w1 "c2pnb304w1"
+#define NID_X9_62_c2pnb304w1 700
+#define OBJ_X9_62_c2pnb304w1 1L, 2L, 840L, 10045L, 3L, 0L, 17L
+
+#define SN_X9_62_c2tnb359v1 "c2tnb359v1"
+#define NID_X9_62_c2tnb359v1 701
+#define OBJ_X9_62_c2tnb359v1 1L, 2L, 840L, 10045L, 3L, 0L, 18L
+
+#define SN_X9_62_c2pnb368w1 "c2pnb368w1"
+#define NID_X9_62_c2pnb368w1 702
+#define OBJ_X9_62_c2pnb368w1 1L, 2L, 840L, 10045L, 3L, 0L, 19L
+
+#define SN_X9_62_c2tnb431r1 "c2tnb431r1"
+#define NID_X9_62_c2tnb431r1 703
+#define OBJ_X9_62_c2tnb431r1 1L, 2L, 840L, 10045L, 3L, 0L, 20L
+
+#define SN_secp112r1 "secp112r1"
+#define NID_secp112r1 704
+#define OBJ_secp112r1 1L, 3L, 132L, 0L, 6L
+
+#define SN_secp112r2 "secp112r2"
+#define NID_secp112r2 705
+#define OBJ_secp112r2 1L, 3L, 132L, 0L, 7L
+
+#define SN_secp128r1 "secp128r1"
+#define NID_secp128r1 706
+#define OBJ_secp128r1 1L, 3L, 132L, 0L, 28L
+
+#define SN_secp128r2 "secp128r2"
+#define NID_secp128r2 707
+#define OBJ_secp128r2 1L, 3L, 132L, 0L, 29L
+
+#define SN_secp160k1 "secp160k1"
+#define NID_secp160k1 708
+#define OBJ_secp160k1 1L, 3L, 132L, 0L, 9L
+
+#define SN_secp160r1 "secp160r1"
+#define NID_secp160r1 709
+#define OBJ_secp160r1 1L, 3L, 132L, 0L, 8L
+
+#define SN_secp160r2 "secp160r2"
+#define NID_secp160r2 710
+#define OBJ_secp160r2 1L, 3L, 132L, 0L, 30L
+
+#define SN_secp192k1 "secp192k1"
+#define NID_secp192k1 711
+#define OBJ_secp192k1 1L, 3L, 132L, 0L, 31L
+
+#define SN_secp224k1 "secp224k1"
+#define NID_secp224k1 712
+#define OBJ_secp224k1 1L, 3L, 132L, 0L, 32L
+
+#define SN_secp224r1 "secp224r1"
+#define NID_secp224r1 713
+#define OBJ_secp224r1 1L, 3L, 132L, 0L, 33L
+
+#define SN_secp256k1 "secp256k1"
+#define NID_secp256k1 714
+#define OBJ_secp256k1 1L, 3L, 132L, 0L, 10L
+
+#define SN_secp384r1 "secp384r1"
+#define NID_secp384r1 715
+#define OBJ_secp384r1 1L, 3L, 132L, 0L, 34L
+
+#define SN_secp521r1 "secp521r1"
+#define NID_secp521r1 716
+#define OBJ_secp521r1 1L, 3L, 132L, 0L, 35L
+
+#define SN_sect113r1 "sect113r1"
+#define NID_sect113r1 717
+#define OBJ_sect113r1 1L, 3L, 132L, 0L, 4L
+
+#define SN_sect113r2 "sect113r2"
+#define NID_sect113r2 718
+#define OBJ_sect113r2 1L, 3L, 132L, 0L, 5L
+
+#define SN_sect131r1 "sect131r1"
+#define NID_sect131r1 719
+#define OBJ_sect131r1 1L, 3L, 132L, 0L, 22L
+
+#define SN_sect131r2 "sect131r2"
+#define NID_sect131r2 720
+#define OBJ_sect131r2 1L, 3L, 132L, 0L, 23L
+
+#define SN_sect163k1 "sect163k1"
+#define NID_sect163k1 721
+#define OBJ_sect163k1 1L, 3L, 132L, 0L, 1L
+
+#define SN_sect163r1 "sect163r1"
+#define NID_sect163r1 722
+#define OBJ_sect163r1 1L, 3L, 132L, 0L, 2L
+
+#define SN_sect163r2 "sect163r2"
+#define NID_sect163r2 723
+#define OBJ_sect163r2 1L, 3L, 132L, 0L, 15L
+
+#define SN_sect193r1 "sect193r1"
+#define NID_sect193r1 724
+#define OBJ_sect193r1 1L, 3L, 132L, 0L, 24L
+
+#define SN_sect193r2 "sect193r2"
+#define NID_sect193r2 725
+#define OBJ_sect193r2 1L, 3L, 132L, 0L, 25L
+
+#define SN_sect233k1 "sect233k1"
+#define NID_sect233k1 726
+#define OBJ_sect233k1 1L, 3L, 132L, 0L, 26L
+
+#define SN_sect233r1 "sect233r1"
+#define NID_sect233r1 727
+#define OBJ_sect233r1 1L, 3L, 132L, 0L, 27L
+
+#define SN_sect239k1 "sect239k1"
+#define NID_sect239k1 728
+#define OBJ_sect239k1 1L, 3L, 132L, 0L, 3L
+
+#define SN_sect283k1 "sect283k1"
+#define NID_sect283k1 729
+#define OBJ_sect283k1 1L, 3L, 132L, 0L, 16L
+
+#define SN_sect283r1 "sect283r1"
+#define NID_sect283r1 730
+#define OBJ_sect283r1 1L, 3L, 132L, 0L, 17L
+
+#define SN_sect409k1 "sect409k1"
+#define NID_sect409k1 731
+#define OBJ_sect409k1 1L, 3L, 132L, 0L, 36L
+
+#define SN_sect409r1 "sect409r1"
+#define NID_sect409r1 732
+#define OBJ_sect409r1 1L, 3L, 132L, 0L, 37L
+
+#define SN_sect571k1 "sect571k1"
+#define NID_sect571k1 733
+#define OBJ_sect571k1 1L, 3L, 132L, 0L, 38L
+
+#define SN_sect571r1 "sect571r1"
+#define NID_sect571r1 734
+#define OBJ_sect571r1 1L, 3L, 132L, 0L, 39L
+
+#define SN_wap_wsg_idm_ecid_wtls1 "wap-wsg-idm-ecid-wtls1"
+#define NID_wap_wsg_idm_ecid_wtls1 735
+#define OBJ_wap_wsg_idm_ecid_wtls1 2L, 23L, 43L, 1L, 4L, 1L
+
+#define SN_wap_wsg_idm_ecid_wtls3 "wap-wsg-idm-ecid-wtls3"
+#define NID_wap_wsg_idm_ecid_wtls3 736
+#define OBJ_wap_wsg_idm_ecid_wtls3 2L, 23L, 43L, 1L, 4L, 3L
+
+#define SN_wap_wsg_idm_ecid_wtls4 "wap-wsg-idm-ecid-wtls4"
+#define NID_wap_wsg_idm_ecid_wtls4 737
+#define OBJ_wap_wsg_idm_ecid_wtls4 2L, 23L, 43L, 1L, 4L, 4L
+
+#define SN_wap_wsg_idm_ecid_wtls5 "wap-wsg-idm-ecid-wtls5"
+#define NID_wap_wsg_idm_ecid_wtls5 738
+#define OBJ_wap_wsg_idm_ecid_wtls5 2L, 23L, 43L, 1L, 4L, 5L
+
+#define SN_wap_wsg_idm_ecid_wtls6 "wap-wsg-idm-ecid-wtls6"
+#define NID_wap_wsg_idm_ecid_wtls6 739
+#define OBJ_wap_wsg_idm_ecid_wtls6 2L, 23L, 43L, 1L, 4L, 6L
+
+#define SN_wap_wsg_idm_ecid_wtls7 "wap-wsg-idm-ecid-wtls7"
+#define NID_wap_wsg_idm_ecid_wtls7 740
+#define OBJ_wap_wsg_idm_ecid_wtls7 2L, 23L, 43L, 1L, 4L, 7L
+
+#define SN_wap_wsg_idm_ecid_wtls8 "wap-wsg-idm-ecid-wtls8"
+#define NID_wap_wsg_idm_ecid_wtls8 741
+#define OBJ_wap_wsg_idm_ecid_wtls8 2L, 23L, 43L, 1L, 4L, 8L
+
+#define SN_wap_wsg_idm_ecid_wtls9 "wap-wsg-idm-ecid-wtls9"
+#define NID_wap_wsg_idm_ecid_wtls9 742
+#define OBJ_wap_wsg_idm_ecid_wtls9 2L, 23L, 43L, 1L, 4L, 9L
+
+#define SN_wap_wsg_idm_ecid_wtls10 "wap-wsg-idm-ecid-wtls10"
+#define NID_wap_wsg_idm_ecid_wtls10 743
+#define OBJ_wap_wsg_idm_ecid_wtls10 2L, 23L, 43L, 1L, 4L, 10L
+
+#define SN_wap_wsg_idm_ecid_wtls11 "wap-wsg-idm-ecid-wtls11"
+#define NID_wap_wsg_idm_ecid_wtls11 744
+#define OBJ_wap_wsg_idm_ecid_wtls11 2L, 23L, 43L, 1L, 4L, 11L
+
+#define SN_wap_wsg_idm_ecid_wtls12 "wap-wsg-idm-ecid-wtls12"
+#define NID_wap_wsg_idm_ecid_wtls12 745
+#define OBJ_wap_wsg_idm_ecid_wtls12 2L, 23L, 43L, 1L, 4L, 12L
+
+#define SN_any_policy "anyPolicy"
+#define LN_any_policy "X509v3 Any Policy"
+#define NID_any_policy 746
+#define OBJ_any_policy 2L, 5L, 29L, 32L, 0L
+
+#define SN_policy_mappings "policyMappings"
+#define LN_policy_mappings "X509v3 Policy Mappings"
+#define NID_policy_mappings 747
+#define OBJ_policy_mappings 2L, 5L, 29L, 33L
+
+#define SN_inhibit_any_policy "inhibitAnyPolicy"
+#define LN_inhibit_any_policy "X509v3 Inhibit Any Policy"
+#define NID_inhibit_any_policy 748
+#define OBJ_inhibit_any_policy 2L, 5L, 29L, 54L
+
+#define SN_ipsec3 "Oakley-EC2N-3"
+#define LN_ipsec3 "ipsec3"
+#define NID_ipsec3 749
+
+#define SN_ipsec4 "Oakley-EC2N-4"
+#define LN_ipsec4 "ipsec4"
+#define NID_ipsec4 750
+
+#define SN_camellia_128_cbc "CAMELLIA-128-CBC"
+#define LN_camellia_128_cbc "camellia-128-cbc"
+#define NID_camellia_128_cbc 751
+#define OBJ_camellia_128_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 2L
+
+#define SN_camellia_192_cbc "CAMELLIA-192-CBC"
+#define LN_camellia_192_cbc "camellia-192-cbc"
+#define NID_camellia_192_cbc 752
+#define OBJ_camellia_192_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 3L
+
+#define SN_camellia_256_cbc "CAMELLIA-256-CBC"
+#define LN_camellia_256_cbc "camellia-256-cbc"
+#define NID_camellia_256_cbc 753
+#define OBJ_camellia_256_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 4L
+
+#define SN_camellia_128_ecb "CAMELLIA-128-ECB"
+#define LN_camellia_128_ecb "camellia-128-ecb"
+#define NID_camellia_128_ecb 754
+#define OBJ_camellia_128_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 1L
+
+#define SN_camellia_192_ecb "CAMELLIA-192-ECB"
+#define LN_camellia_192_ecb "camellia-192-ecb"
+#define NID_camellia_192_ecb 755
+#define OBJ_camellia_192_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 21L
+
+#define SN_camellia_256_ecb "CAMELLIA-256-ECB"
+#define LN_camellia_256_ecb "camellia-256-ecb"
+#define NID_camellia_256_ecb 756
+#define OBJ_camellia_256_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 41L
+
+#define SN_camellia_128_cfb128 "CAMELLIA-128-CFB"
+#define LN_camellia_128_cfb128 "camellia-128-cfb"
+#define NID_camellia_128_cfb128 757
+#define OBJ_camellia_128_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 4L
+
+#define SN_camellia_192_cfb128 "CAMELLIA-192-CFB"
+#define LN_camellia_192_cfb128 "camellia-192-cfb"
+#define NID_camellia_192_cfb128 758
+#define OBJ_camellia_192_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 24L
+
+#define SN_camellia_256_cfb128 "CAMELLIA-256-CFB"
+#define LN_camellia_256_cfb128 "camellia-256-cfb"
+#define NID_camellia_256_cfb128 759
+#define OBJ_camellia_256_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 44L
+
+#define SN_camellia_128_cfb1 "CAMELLIA-128-CFB1"
+#define LN_camellia_128_cfb1 "camellia-128-cfb1"
+#define NID_camellia_128_cfb1 760
+
+#define SN_camellia_192_cfb1 "CAMELLIA-192-CFB1"
+#define LN_camellia_192_cfb1 "camellia-192-cfb1"
+#define NID_camellia_192_cfb1 761
+
+#define SN_camellia_256_cfb1 "CAMELLIA-256-CFB1"
+#define LN_camellia_256_cfb1 "camellia-256-cfb1"
+#define NID_camellia_256_cfb1 762
+
+#define SN_camellia_128_cfb8 "CAMELLIA-128-CFB8"
+#define LN_camellia_128_cfb8 "camellia-128-cfb8"
+#define NID_camellia_128_cfb8 763
+
+#define SN_camellia_192_cfb8 "CAMELLIA-192-CFB8"
+#define LN_camellia_192_cfb8 "camellia-192-cfb8"
+#define NID_camellia_192_cfb8 764
+
+#define SN_camellia_256_cfb8 "CAMELLIA-256-CFB8"
+#define LN_camellia_256_cfb8 "camellia-256-cfb8"
+#define NID_camellia_256_cfb8 765
+
+#define SN_camellia_128_ofb128 "CAMELLIA-128-OFB"
+#define LN_camellia_128_ofb128 "camellia-128-ofb"
+#define NID_camellia_128_ofb128 766
+#define OBJ_camellia_128_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 3L
+
+#define SN_camellia_192_ofb128 "CAMELLIA-192-OFB"
+#define LN_camellia_192_ofb128 "camellia-192-ofb"
+#define NID_camellia_192_ofb128 767
+#define OBJ_camellia_192_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 23L
+
+#define SN_camellia_256_ofb128 "CAMELLIA-256-OFB"
+#define LN_camellia_256_ofb128 "camellia-256-ofb"
+#define NID_camellia_256_ofb128 768
+#define OBJ_camellia_256_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 43L
+
+#define SN_subject_directory_attributes "subjectDirectoryAttributes"
+#define LN_subject_directory_attributes "X509v3 Subject Directory Attributes"
+#define NID_subject_directory_attributes 769
+#define OBJ_subject_directory_attributes 2L, 5L, 29L, 9L
+
+#define SN_issuing_distribution_point "issuingDistributionPoint"
+#define LN_issuing_distribution_point "X509v3 Issuing Distribution Point"
+#define NID_issuing_distribution_point 770
+#define OBJ_issuing_distribution_point 2L, 5L, 29L, 28L
+
+#define SN_certificate_issuer "certificateIssuer"
+#define LN_certificate_issuer "X509v3 Certificate Issuer"
+#define NID_certificate_issuer 771
+#define OBJ_certificate_issuer 2L, 5L, 29L, 29L
+
+#define SN_kisa "KISA"
+#define LN_kisa "kisa"
+#define NID_kisa 773
+#define OBJ_kisa 1L, 2L, 410L, 200004L
+
+#define SN_seed_ecb "SEED-ECB"
+#define LN_seed_ecb "seed-ecb"
+#define NID_seed_ecb 776
+#define OBJ_seed_ecb 1L, 2L, 410L, 200004L, 1L, 3L
+
+#define SN_seed_cbc "SEED-CBC"
+#define LN_seed_cbc "seed-cbc"
+#define NID_seed_cbc 777
+#define OBJ_seed_cbc 1L, 2L, 410L, 200004L, 1L, 4L
+
+#define SN_seed_ofb128 "SEED-OFB"
+#define LN_seed_ofb128 "seed-ofb"
+#define NID_seed_ofb128 778
+#define OBJ_seed_ofb128 1L, 2L, 410L, 200004L, 1L, 6L
+
+#define SN_seed_cfb128 "SEED-CFB"
+#define LN_seed_cfb128 "seed-cfb"
+#define NID_seed_cfb128 779
+#define OBJ_seed_cfb128 1L, 2L, 410L, 200004L, 1L, 5L
+
+#define SN_hmac_md5 "HMAC-MD5"
+#define LN_hmac_md5 "hmac-md5"
+#define NID_hmac_md5 780
+#define OBJ_hmac_md5 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 1L
+
+#define SN_hmac_sha1 "HMAC-SHA1"
+#define LN_hmac_sha1 "hmac-sha1"
+#define NID_hmac_sha1 781
+#define OBJ_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 2L
+
+#define SN_id_PasswordBasedMAC "id-PasswordBasedMAC"
+#define LN_id_PasswordBasedMAC "password based MAC"
+#define NID_id_PasswordBasedMAC 782
+#define OBJ_id_PasswordBasedMAC 1L, 2L, 840L, 113533L, 7L, 66L, 13L
+
+#define SN_id_DHBasedMac "id-DHBasedMac"
+#define LN_id_DHBasedMac "Diffie-Hellman based MAC"
+#define NID_id_DHBasedMac 783
+#define OBJ_id_DHBasedMac 1L, 2L, 840L, 113533L, 7L, 66L, 30L
+
+#define SN_id_it_suppLangTags "id-it-suppLangTags"
+#define NID_id_it_suppLangTags 784
+#define OBJ_id_it_suppLangTags 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 16L
+
+#define SN_caRepository "caRepository"
+#define LN_caRepository "CA Repository"
+#define NID_caRepository 785
+#define OBJ_caRepository 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 5L
+
+#define SN_id_smime_ct_compressedData "id-smime-ct-compressedData"
+#define NID_id_smime_ct_compressedData 786
+#define OBJ_id_smime_ct_compressedData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 9L
+
+#define SN_id_ct_asciiTextWithCRLF "id-ct-asciiTextWithCRLF"
+#define NID_id_ct_asciiTextWithCRLF 787
+#define OBJ_id_ct_asciiTextWithCRLF 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 27L
+
+#define SN_id_aes128_wrap "id-aes128-wrap"
+#define NID_id_aes128_wrap 788
+#define OBJ_id_aes128_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 5L
+
+#define SN_id_aes192_wrap "id-aes192-wrap"
+#define NID_id_aes192_wrap 789
+#define OBJ_id_aes192_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 25L
+
+#define SN_id_aes256_wrap "id-aes256-wrap"
+#define NID_id_aes256_wrap 790
+#define OBJ_id_aes256_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 45L
+
+#define SN_ecdsa_with_Recommended "ecdsa-with-Recommended"
+#define NID_ecdsa_with_Recommended 791
+#define OBJ_ecdsa_with_Recommended 1L, 2L, 840L, 10045L, 4L, 2L
+
+#define SN_ecdsa_with_Specified "ecdsa-with-Specified"
+#define NID_ecdsa_with_Specified 792
+#define OBJ_ecdsa_with_Specified 1L, 2L, 840L, 10045L, 4L, 3L
+
+#define SN_ecdsa_with_SHA224 "ecdsa-with-SHA224"
+#define NID_ecdsa_with_SHA224 793
+#define OBJ_ecdsa_with_SHA224 1L, 2L, 840L, 10045L, 4L, 3L, 1L
+
+#define SN_ecdsa_with_SHA256 "ecdsa-with-SHA256"
+#define NID_ecdsa_with_SHA256 794
+#define OBJ_ecdsa_with_SHA256 1L, 2L, 840L, 10045L, 4L, 3L, 2L
+
+#define SN_ecdsa_with_SHA384 "ecdsa-with-SHA384"
+#define NID_ecdsa_with_SHA384 795
+#define OBJ_ecdsa_with_SHA384 1L, 2L, 840L, 10045L, 4L, 3L, 3L
+
+#define SN_ecdsa_with_SHA512 "ecdsa-with-SHA512"
+#define NID_ecdsa_with_SHA512 796
+#define OBJ_ecdsa_with_SHA512 1L, 2L, 840L, 10045L, 4L, 3L, 4L
+
+#define LN_hmacWithMD5 "hmacWithMD5"
+#define NID_hmacWithMD5 797
+#define OBJ_hmacWithMD5 1L, 2L, 840L, 113549L, 2L, 6L
+
+#define LN_hmacWithSHA224 "hmacWithSHA224"
+#define NID_hmacWithSHA224 798
+#define OBJ_hmacWithSHA224 1L, 2L, 840L, 113549L, 2L, 8L
+
+#define LN_hmacWithSHA256 "hmacWithSHA256"
+#define NID_hmacWithSHA256 799
+#define OBJ_hmacWithSHA256 1L, 2L, 840L, 113549L, 2L, 9L
+
+#define LN_hmacWithSHA384 "hmacWithSHA384"
+#define NID_hmacWithSHA384 800
+#define OBJ_hmacWithSHA384 1L, 2L, 840L, 113549L, 2L, 10L
+
+#define LN_hmacWithSHA512 "hmacWithSHA512"
+#define NID_hmacWithSHA512 801
+#define OBJ_hmacWithSHA512 1L, 2L, 840L, 113549L, 2L, 11L
+
+#define SN_dsa_with_SHA224 "dsa_with_SHA224"
+#define NID_dsa_with_SHA224 802
+#define OBJ_dsa_with_SHA224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 1L
+
+#define SN_dsa_with_SHA256 "dsa_with_SHA256"
+#define NID_dsa_with_SHA256 803
+#define OBJ_dsa_with_SHA256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 2L
+
+#define SN_whirlpool "whirlpool"
+#define NID_whirlpool 804
+#define OBJ_whirlpool 1L, 0L, 10118L, 3L, 0L, 55L
+
+#define SN_cryptopro "cryptopro"
+#define NID_cryptopro 805
+#define OBJ_cryptopro 1L, 2L, 643L, 2L, 2L
+
+#define SN_cryptocom "cryptocom"
+#define NID_cryptocom 806
+#define OBJ_cryptocom 1L, 2L, 643L, 2L, 9L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001 \
+  "id-GostR3411-94-with-GostR3410-2001"
+#define LN_id_GostR3411_94_with_GostR3410_2001 \
+  "GOST R 34.11-94 with GOST R 34.10-2001"
+#define NID_id_GostR3411_94_with_GostR3410_2001 807
+#define OBJ_id_GostR3411_94_with_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_94 "id-GostR3411-94-with-GostR3410-94"
+#define LN_id_GostR3411_94_with_GostR3410_94 \
+  "GOST R 34.11-94 with GOST R 34.10-94"
+#define NID_id_GostR3411_94_with_GostR3410_94 808
+#define OBJ_id_GostR3411_94_with_GostR3410_94 1L, 2L, 643L, 2L, 2L, 4L
+
+#define SN_id_GostR3411_94 "md_gost94"
+#define LN_id_GostR3411_94 "GOST R 34.11-94"
+#define NID_id_GostR3411_94 809
+#define OBJ_id_GostR3411_94 1L, 2L, 643L, 2L, 2L, 9L
+
+#define SN_id_HMACGostR3411_94 "id-HMACGostR3411-94"
+#define LN_id_HMACGostR3411_94 "HMAC GOST 34.11-94"
+#define NID_id_HMACGostR3411_94 810
+#define OBJ_id_HMACGostR3411_94 1L, 2L, 643L, 2L, 2L, 10L
+
+#define SN_id_GostR3410_2001 "gost2001"
+#define LN_id_GostR3410_2001 "GOST R 34.10-2001"
+#define NID_id_GostR3410_2001 811
+#define OBJ_id_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 19L
+
+#define SN_id_GostR3410_94 "gost94"
+#define LN_id_GostR3410_94 "GOST R 34.10-94"
+#define NID_id_GostR3410_94 812
+#define OBJ_id_GostR3410_94 1L, 2L, 643L, 2L, 2L, 20L
+
+#define SN_id_Gost28147_89 "gost89"
+#define LN_id_Gost28147_89 "GOST 28147-89"
+#define NID_id_Gost28147_89 813
+#define OBJ_id_Gost28147_89 1L, 2L, 643L, 2L, 2L, 21L
+
+#define SN_gost89_cnt "gost89-cnt"
+#define NID_gost89_cnt 814
+
+#define SN_id_Gost28147_89_MAC "gost-mac"
+#define LN_id_Gost28147_89_MAC "GOST 28147-89 MAC"
+#define NID_id_Gost28147_89_MAC 815
+#define OBJ_id_Gost28147_89_MAC 1L, 2L, 643L, 2L, 2L, 22L
+
+#define SN_id_GostR3411_94_prf "prf-gostr3411-94"
+#define LN_id_GostR3411_94_prf "GOST R 34.11-94 PRF"
+#define NID_id_GostR3411_94_prf 816
+#define OBJ_id_GostR3411_94_prf 1L, 2L, 643L, 2L, 2L, 23L
+
+#define SN_id_GostR3410_2001DH "id-GostR3410-2001DH"
+#define LN_id_GostR3410_2001DH "GOST R 34.10-2001 DH"
+#define NID_id_GostR3410_2001DH 817
+#define OBJ_id_GostR3410_2001DH 1L, 2L, 643L, 2L, 2L, 98L
+
+#define SN_id_GostR3410_94DH "id-GostR3410-94DH"
+#define LN_id_GostR3410_94DH "GOST R 34.10-94 DH"
+#define NID_id_GostR3410_94DH 818
+#define OBJ_id_GostR3410_94DH 1L, 2L, 643L, 2L, 2L, 99L
+
+#define SN_id_Gost28147_89_CryptoPro_KeyMeshing \
+  "id-Gost28147-89-CryptoPro-KeyMeshing"
+#define NID_id_Gost28147_89_CryptoPro_KeyMeshing 819
+#define OBJ_id_Gost28147_89_CryptoPro_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 1L
+
+#define SN_id_Gost28147_89_None_KeyMeshing "id-Gost28147-89-None-KeyMeshing"
+#define NID_id_Gost28147_89_None_KeyMeshing 820
+#define OBJ_id_Gost28147_89_None_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 0L
+
+#define SN_id_GostR3411_94_TestParamSet "id-GostR3411-94-TestParamSet"
+#define NID_id_GostR3411_94_TestParamSet 821
+#define OBJ_id_GostR3411_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 30L, 0L
+
+#define SN_id_GostR3411_94_CryptoProParamSet "id-GostR3411-94-CryptoProParamSet"
+#define NID_id_GostR3411_94_CryptoProParamSet 822
+#define OBJ_id_GostR3411_94_CryptoProParamSet 1L, 2L, 643L, 2L, 2L, 30L, 1L
+
+#define SN_id_Gost28147_89_TestParamSet "id-Gost28147-89-TestParamSet"
+#define NID_id_Gost28147_89_TestParamSet 823
+#define OBJ_id_Gost28147_89_TestParamSet 1L, 2L, 643L, 2L, 2L, 31L, 0L
+
+#define SN_id_Gost28147_89_CryptoPro_A_ParamSet \
+  "id-Gost28147-89-CryptoPro-A-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_A_ParamSet 824
+#define OBJ_id_Gost28147_89_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 1L
+
+#define SN_id_Gost28147_89_CryptoPro_B_ParamSet \
+  "id-Gost28147-89-CryptoPro-B-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_B_ParamSet 825
+#define OBJ_id_Gost28147_89_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 2L
+
+#define SN_id_Gost28147_89_CryptoPro_C_ParamSet \
+  "id-Gost28147-89-CryptoPro-C-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_C_ParamSet 826
+#define OBJ_id_Gost28147_89_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 3L
+
+#define SN_id_Gost28147_89_CryptoPro_D_ParamSet \
+  "id-Gost28147-89-CryptoPro-D-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_D_ParamSet 827
+#define OBJ_id_Gost28147_89_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 4L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet 828
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 5L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet 829
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 6L
+
+#define SN_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-RIC-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet 830
+#define OBJ_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 7L
+
+#define SN_id_GostR3410_94_TestParamSet "id-GostR3410-94-TestParamSet"
+#define NID_id_GostR3410_94_TestParamSet 831
+#define OBJ_id_GostR3410_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 32L, 0L
+
+#define SN_id_GostR3410_94_CryptoPro_A_ParamSet \
+  "id-GostR3410-94-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_A_ParamSet 832
+#define OBJ_id_GostR3410_94_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_B_ParamSet \
+  "id-GostR3410-94-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_B_ParamSet 833
+#define OBJ_id_GostR3410_94_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 3L
+
+#define SN_id_GostR3410_94_CryptoPro_C_ParamSet \
+  "id-GostR3410-94-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_C_ParamSet 834
+#define OBJ_id_GostR3410_94_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 4L
+
+#define SN_id_GostR3410_94_CryptoPro_D_ParamSet \
+  "id-GostR3410-94-CryptoPro-D-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_D_ParamSet 835
+#define OBJ_id_GostR3410_94_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 5L
+
+#define SN_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchA_ParamSet 836
+#define OBJ_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 1L
+
+#define SN_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchB_ParamSet 837
+#define OBJ_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchC-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchC_ParamSet 838
+#define OBJ_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 3L
+
+#define SN_id_GostR3410_2001_TestParamSet "id-GostR3410-2001-TestParamSet"
+#define NID_id_GostR3410_2001_TestParamSet 839
+#define OBJ_id_GostR3410_2001_TestParamSet 1L, 2L, 643L, 2L, 2L, 35L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_A_ParamSet \
+  "id-GostR3410-2001-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_A_ParamSet 840
+#define OBJ_id_GostR3410_2001_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 1L
+
+#define SN_id_GostR3410_2001_CryptoPro_B_ParamSet \
+  "id-GostR3410-2001-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_B_ParamSet 841
+#define OBJ_id_GostR3410_2001_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 2L
+
+#define SN_id_GostR3410_2001_CryptoPro_C_ParamSet \
+  "id-GostR3410-2001-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_C_ParamSet 842
+#define OBJ_id_GostR3410_2001_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 3L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet 843
+#define OBJ_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet 844
+#define OBJ_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 1L
+
+#define SN_id_GostR3410_94_a "id-GostR3410-94-a"
+#define NID_id_GostR3410_94_a 845
+#define OBJ_id_GostR3410_94_a 1L, 2L, 643L, 2L, 2L, 20L, 1L
+
+#define SN_id_GostR3410_94_aBis "id-GostR3410-94-aBis"
+#define NID_id_GostR3410_94_aBis 846
+#define OBJ_id_GostR3410_94_aBis 1L, 2L, 643L, 2L, 2L, 20L, 2L
+
+#define SN_id_GostR3410_94_b "id-GostR3410-94-b"
+#define NID_id_GostR3410_94_b 847
+#define OBJ_id_GostR3410_94_b 1L, 2L, 643L, 2L, 2L, 20L, 3L
+
+#define SN_id_GostR3410_94_bBis "id-GostR3410-94-bBis"
+#define NID_id_GostR3410_94_bBis 848
+#define OBJ_id_GostR3410_94_bBis 1L, 2L, 643L, 2L, 2L, 20L, 4L
+
+#define SN_id_Gost28147_89_cc "id-Gost28147-89-cc"
+#define LN_id_Gost28147_89_cc "GOST 28147-89 Cryptocom ParamSet"
+#define NID_id_Gost28147_89_cc 849
+#define OBJ_id_Gost28147_89_cc 1L, 2L, 643L, 2L, 9L, 1L, 6L, 1L
+
+#define SN_id_GostR3410_94_cc "gost94cc"
+#define LN_id_GostR3410_94_cc "GOST 34.10-94 Cryptocom"
+#define NID_id_GostR3410_94_cc 850
+#define OBJ_id_GostR3410_94_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 3L
+
+#define SN_id_GostR3410_2001_cc "gost2001cc"
+#define LN_id_GostR3410_2001_cc "GOST 34.10-2001 Cryptocom"
+#define NID_id_GostR3410_2001_cc 851
+#define OBJ_id_GostR3410_2001_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 4L
+
+#define SN_id_GostR3411_94_with_GostR3410_94_cc \
+  "id-GostR3411-94-with-GostR3410-94-cc"
+#define LN_id_GostR3411_94_with_GostR3410_94_cc \
+  "GOST R 34.11-94 with GOST R 34.10-94 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_94_cc 852
+#define OBJ_id_GostR3411_94_with_GostR3410_94_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "id-GostR3411-94-with-GostR3410-2001-cc"
+#define LN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_2001_cc 853
+#define OBJ_id_GostR3411_94_with_GostR3410_2001_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 4L
+
+#define SN_id_GostR3410_2001_ParamSet_cc "id-GostR3410-2001-ParamSet-cc"
+#define LN_id_GostR3410_2001_ParamSet_cc \
+  "GOST R 3410-2001 Parameter Set Cryptocom"
+#define NID_id_GostR3410_2001_ParamSet_cc 854
+#define OBJ_id_GostR3410_2001_ParamSet_cc 1L, 2L, 643L, 2L, 9L, 1L, 8L, 1L
+
+#define SN_hmac "HMAC"
+#define LN_hmac "hmac"
+#define NID_hmac 855
+
+#define SN_LocalKeySet "LocalKeySet"
+#define LN_LocalKeySet "Microsoft Local Key set"
+#define NID_LocalKeySet 856
+#define OBJ_LocalKeySet 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 2L
+
+#define SN_freshest_crl "freshestCRL"
+#define LN_freshest_crl "X509v3 Freshest CRL"
+#define NID_freshest_crl 857
+#define OBJ_freshest_crl 2L, 5L, 29L, 46L
+
+#define SN_id_on_permanentIdentifier "id-on-permanentIdentifier"
+#define LN_id_on_permanentIdentifier "Permanent Identifier"
+#define NID_id_on_permanentIdentifier 858
+#define OBJ_id_on_permanentIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 3L
+
+#define LN_searchGuide "searchGuide"
+#define NID_searchGuide 859
+#define OBJ_searchGuide 2L, 5L, 4L, 14L
+
+#define LN_businessCategory "businessCategory"
+#define NID_businessCategory 860
+#define OBJ_businessCategory 2L, 5L, 4L, 15L
+
+#define LN_postalAddress "postalAddress"
+#define NID_postalAddress 861
+#define OBJ_postalAddress 2L, 5L, 4L, 16L
+
+#define LN_postOfficeBox "postOfficeBox"
+#define NID_postOfficeBox 862
+#define OBJ_postOfficeBox 2L, 5L, 4L, 18L
+
+#define LN_physicalDeliveryOfficeName "physicalDeliveryOfficeName"
+#define NID_physicalDeliveryOfficeName 863
+#define OBJ_physicalDeliveryOfficeName 2L, 5L, 4L, 19L
+
+#define LN_telephoneNumber "telephoneNumber"
+#define NID_telephoneNumber 864
+#define OBJ_telephoneNumber 2L, 5L, 4L, 20L
+
+#define LN_telexNumber "telexNumber"
+#define NID_telexNumber 865
+#define OBJ_telexNumber 2L, 5L, 4L, 21L
+
+#define LN_teletexTerminalIdentifier "teletexTerminalIdentifier"
+#define NID_teletexTerminalIdentifier 866
+#define OBJ_teletexTerminalIdentifier 2L, 5L, 4L, 22L
+
+#define LN_facsimileTelephoneNumber "facsimileTelephoneNumber"
+#define NID_facsimileTelephoneNumber 867
+#define OBJ_facsimileTelephoneNumber 2L, 5L, 4L, 23L
+
+#define LN_x121Address "x121Address"
+#define NID_x121Address 868
+#define OBJ_x121Address 2L, 5L, 4L, 24L
+
+#define LN_internationaliSDNNumber "internationaliSDNNumber"
+#define NID_internationaliSDNNumber 869
+#define OBJ_internationaliSDNNumber 2L, 5L, 4L, 25L
+
+#define LN_registeredAddress "registeredAddress"
+#define NID_registeredAddress 870
+#define OBJ_registeredAddress 2L, 5L, 4L, 26L
+
+#define LN_destinationIndicator "destinationIndicator"
+#define NID_destinationIndicator 871
+#define OBJ_destinationIndicator 2L, 5L, 4L, 27L
+
+#define LN_preferredDeliveryMethod "preferredDeliveryMethod"
+#define NID_preferredDeliveryMethod 872
+#define OBJ_preferredDeliveryMethod 2L, 5L, 4L, 28L
+
+#define LN_presentationAddress "presentationAddress"
+#define NID_presentationAddress 873
+#define OBJ_presentationAddress 2L, 5L, 4L, 29L
+
+#define LN_supportedApplicationContext "supportedApplicationContext"
+#define NID_supportedApplicationContext 874
+#define OBJ_supportedApplicationContext 2L, 5L, 4L, 30L
+
+#define SN_member "member"
+#define NID_member 875
+#define OBJ_member 2L, 5L, 4L, 31L
+
+#define SN_owner "owner"
+#define NID_owner 876
+#define OBJ_owner 2L, 5L, 4L, 32L
+
+#define LN_roleOccupant "roleOccupant"
+#define NID_roleOccupant 877
+#define OBJ_roleOccupant 2L, 5L, 4L, 33L
+
+#define SN_seeAlso "seeAlso"
+#define NID_seeAlso 878
+#define OBJ_seeAlso 2L, 5L, 4L, 34L
+
+#define LN_userPassword "userPassword"
+#define NID_userPassword 879
+#define OBJ_userPassword 2L, 5L, 4L, 35L
+
+#define LN_userCertificate "userCertificate"
+#define NID_userCertificate 880
+#define OBJ_userCertificate 2L, 5L, 4L, 36L
+
+#define LN_cACertificate "cACertificate"
+#define NID_cACertificate 881
+#define OBJ_cACertificate 2L, 5L, 4L, 37L
+
+#define LN_authorityRevocationList "authorityRevocationList"
+#define NID_authorityRevocationList 882
+#define OBJ_authorityRevocationList 2L, 5L, 4L, 38L
+
+#define LN_certificateRevocationList "certificateRevocationList"
+#define NID_certificateRevocationList 883
+#define OBJ_certificateRevocationList 2L, 5L, 4L, 39L
+
+#define LN_crossCertificatePair "crossCertificatePair"
+#define NID_crossCertificatePair 884
+#define OBJ_crossCertificatePair 2L, 5L, 4L, 40L
+
+#define LN_enhancedSearchGuide "enhancedSearchGuide"
+#define NID_enhancedSearchGuide 885
+#define OBJ_enhancedSearchGuide 2L, 5L, 4L, 47L
+
+#define LN_protocolInformation "protocolInformation"
+#define NID_protocolInformation 886
+#define OBJ_protocolInformation 2L, 5L, 4L, 48L
+
+#define LN_distinguishedName "distinguishedName"
+#define NID_distinguishedName 887
+#define OBJ_distinguishedName 2L, 5L, 4L, 49L
+
+#define LN_uniqueMember "uniqueMember"
+#define NID_uniqueMember 888
+#define OBJ_uniqueMember 2L, 5L, 4L, 50L
+
+#define LN_houseIdentifier "houseIdentifier"
+#define NID_houseIdentifier 889
+#define OBJ_houseIdentifier 2L, 5L, 4L, 51L
+
+#define LN_supportedAlgorithms "supportedAlgorithms"
+#define NID_supportedAlgorithms 890
+#define OBJ_supportedAlgorithms 2L, 5L, 4L, 52L
+
+#define LN_deltaRevocationList "deltaRevocationList"
+#define NID_deltaRevocationList 891
+#define OBJ_deltaRevocationList 2L, 5L, 4L, 53L
+
+#define SN_dmdName "dmdName"
+#define NID_dmdName 892
+#define OBJ_dmdName 2L, 5L, 4L, 54L
+
+#define SN_id_alg_PWRI_KEK "id-alg-PWRI-KEK"
+#define NID_id_alg_PWRI_KEK 893
+#define OBJ_id_alg_PWRI_KEK 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 9L
+
+#define SN_cmac "CMAC"
+#define LN_cmac "cmac"
+#define NID_cmac 894
+
+#define SN_aes_128_gcm "id-aes128-GCM"
+#define LN_aes_128_gcm "aes-128-gcm"
+#define NID_aes_128_gcm 895
+#define OBJ_aes_128_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 6L
+
+#define SN_aes_128_ccm "id-aes128-CCM"
+#define LN_aes_128_ccm "aes-128-ccm"
+#define NID_aes_128_ccm 896
+#define OBJ_aes_128_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 7L
+
+#define SN_id_aes128_wrap_pad "id-aes128-wrap-pad"
+#define NID_id_aes128_wrap_pad 897
+#define OBJ_id_aes128_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 8L
+
+#define SN_aes_192_gcm "id-aes192-GCM"
+#define LN_aes_192_gcm "aes-192-gcm"
+#define NID_aes_192_gcm 898
+#define OBJ_aes_192_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 26L
+
+#define SN_aes_192_ccm "id-aes192-CCM"
+#define LN_aes_192_ccm "aes-192-ccm"
+#define NID_aes_192_ccm 899
+#define OBJ_aes_192_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 27L
+
+#define SN_id_aes192_wrap_pad "id-aes192-wrap-pad"
+#define NID_id_aes192_wrap_pad 900
+#define OBJ_id_aes192_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 28L
+
+#define SN_aes_256_gcm "id-aes256-GCM"
+#define LN_aes_256_gcm "aes-256-gcm"
+#define NID_aes_256_gcm 901
+#define OBJ_aes_256_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 46L
+
+#define SN_aes_256_ccm "id-aes256-CCM"
+#define LN_aes_256_ccm "aes-256-ccm"
+#define NID_aes_256_ccm 902
+#define OBJ_aes_256_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 47L
+
+#define SN_id_aes256_wrap_pad "id-aes256-wrap-pad"
+#define NID_id_aes256_wrap_pad 903
+#define OBJ_id_aes256_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 48L
+
+#define SN_aes_128_ctr "AES-128-CTR"
+#define LN_aes_128_ctr "aes-128-ctr"
+#define NID_aes_128_ctr 904
+
+#define SN_aes_192_ctr "AES-192-CTR"
+#define LN_aes_192_ctr "aes-192-ctr"
+#define NID_aes_192_ctr 905
+
+#define SN_aes_256_ctr "AES-256-CTR"
+#define LN_aes_256_ctr "aes-256-ctr"
+#define NID_aes_256_ctr 906
+
+#define SN_id_camellia128_wrap "id-camellia128-wrap"
+#define NID_id_camellia128_wrap 907
+#define OBJ_id_camellia128_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 2L
+
+#define SN_id_camellia192_wrap "id-camellia192-wrap"
+#define NID_id_camellia192_wrap 908
+#define OBJ_id_camellia192_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 3L
+
+#define SN_id_camellia256_wrap "id-camellia256-wrap"
+#define NID_id_camellia256_wrap 909
+#define OBJ_id_camellia256_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 4L
+
+#define SN_anyExtendedKeyUsage "anyExtendedKeyUsage"
+#define LN_anyExtendedKeyUsage "Any Extended Key Usage"
+#define NID_anyExtendedKeyUsage 910
+#define OBJ_anyExtendedKeyUsage 2L, 5L, 29L, 37L, 0L
+
+#define SN_mgf1 "MGF1"
+#define LN_mgf1 "mgf1"
+#define NID_mgf1 911
+#define OBJ_mgf1 1L, 2L, 840L, 113549L, 1L, 1L, 8L
+
+#define SN_rsassaPss "RSASSA-PSS"
+#define LN_rsassaPss "rsassaPss"
+#define NID_rsassaPss 912
+#define OBJ_rsassaPss 1L, 2L, 840L, 113549L, 1L, 1L, 10L
+
+#define SN_aes_128_xts "AES-128-XTS"
+#define LN_aes_128_xts "aes-128-xts"
+#define NID_aes_128_xts 913
+
+#define SN_aes_256_xts "AES-256-XTS"
+#define LN_aes_256_xts "aes-256-xts"
+#define NID_aes_256_xts 914
+
+#define SN_rc4_hmac_md5 "RC4-HMAC-MD5"
+#define LN_rc4_hmac_md5 "rc4-hmac-md5"
+#define NID_rc4_hmac_md5 915
+
+#define SN_aes_128_cbc_hmac_sha1 "AES-128-CBC-HMAC-SHA1"
+#define LN_aes_128_cbc_hmac_sha1 "aes-128-cbc-hmac-sha1"
+#define NID_aes_128_cbc_hmac_sha1 916
+
+#define SN_aes_192_cbc_hmac_sha1 "AES-192-CBC-HMAC-SHA1"
+#define LN_aes_192_cbc_hmac_sha1 "aes-192-cbc-hmac-sha1"
+#define NID_aes_192_cbc_hmac_sha1 917
+
+#define SN_aes_256_cbc_hmac_sha1 "AES-256-CBC-HMAC-SHA1"
+#define LN_aes_256_cbc_hmac_sha1 "aes-256-cbc-hmac-sha1"
+#define NID_aes_256_cbc_hmac_sha1 918
+
+#define SN_rsaesOaep "RSAES-OAEP"
+#define LN_rsaesOaep "rsaesOaep"
+#define NID_rsaesOaep 919
+#define OBJ_rsaesOaep 1L, 2L, 840L, 113549L, 1L, 1L, 7L
+
+#define SN_dhpublicnumber "dhpublicnumber"
+#define LN_dhpublicnumber "X9.42 DH"
+#define NID_dhpublicnumber 920
+#define OBJ_dhpublicnumber 1L, 2L, 840L, 10046L, 2L, 1L
+
+#define SN_brainpoolP160r1 "brainpoolP160r1"
+#define NID_brainpoolP160r1 921
+#define OBJ_brainpoolP160r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 1L
+
+#define SN_brainpoolP160t1 "brainpoolP160t1"
+#define NID_brainpoolP160t1 922
+#define OBJ_brainpoolP160t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 2L
+
+#define SN_brainpoolP192r1 "brainpoolP192r1"
+#define NID_brainpoolP192r1 923
+#define OBJ_brainpoolP192r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 3L
+
+#define SN_brainpoolP192t1 "brainpoolP192t1"
+#define NID_brainpoolP192t1 924
+#define OBJ_brainpoolP192t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 4L
+
+#define SN_brainpoolP224r1 "brainpoolP224r1"
+#define NID_brainpoolP224r1 925
+#define OBJ_brainpoolP224r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 5L
+
+#define SN_brainpoolP224t1 "brainpoolP224t1"
+#define NID_brainpoolP224t1 926
+#define OBJ_brainpoolP224t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 6L
+
+#define SN_brainpoolP256r1 "brainpoolP256r1"
+#define NID_brainpoolP256r1 927
+#define OBJ_brainpoolP256r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 7L
+
+#define SN_brainpoolP256t1 "brainpoolP256t1"
+#define NID_brainpoolP256t1 928
+#define OBJ_brainpoolP256t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 8L
+
+#define SN_brainpoolP320r1 "brainpoolP320r1"
+#define NID_brainpoolP320r1 929
+#define OBJ_brainpoolP320r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 9L
+
+#define SN_brainpoolP320t1 "brainpoolP320t1"
+#define NID_brainpoolP320t1 930
+#define OBJ_brainpoolP320t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 10L
+
+#define SN_brainpoolP384r1 "brainpoolP384r1"
+#define NID_brainpoolP384r1 931
+#define OBJ_brainpoolP384r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 11L
+
+#define SN_brainpoolP384t1 "brainpoolP384t1"
+#define NID_brainpoolP384t1 932
+#define OBJ_brainpoolP384t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 12L
+
+#define SN_brainpoolP512r1 "brainpoolP512r1"
+#define NID_brainpoolP512r1 933
+#define OBJ_brainpoolP512r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 13L
+
+#define SN_brainpoolP512t1 "brainpoolP512t1"
+#define NID_brainpoolP512t1 934
+#define OBJ_brainpoolP512t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 14L
+
+#define SN_pSpecified "PSPECIFIED"
+#define LN_pSpecified "pSpecified"
+#define NID_pSpecified 935
+#define OBJ_pSpecified 1L, 2L, 840L, 113549L, 1L, 1L, 9L
+
+#define SN_dhSinglePass_stdDH_sha1kdf_scheme "dhSinglePass-stdDH-sha1kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha1kdf_scheme 936
+#define OBJ_dhSinglePass_stdDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 2L
+
+#define SN_dhSinglePass_stdDH_sha224kdf_scheme \
+  "dhSinglePass-stdDH-sha224kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha224kdf_scheme 937
+#define OBJ_dhSinglePass_stdDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 11L, 0L
+
+#define SN_dhSinglePass_stdDH_sha256kdf_scheme \
+  "dhSinglePass-stdDH-sha256kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha256kdf_scheme 938
+#define OBJ_dhSinglePass_stdDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 11L, 1L
+
+#define SN_dhSinglePass_stdDH_sha384kdf_scheme \
+  "dhSinglePass-stdDH-sha384kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha384kdf_scheme 939
+#define OBJ_dhSinglePass_stdDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 11L, 2L
+
+#define SN_dhSinglePass_stdDH_sha512kdf_scheme \
+  "dhSinglePass-stdDH-sha512kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha512kdf_scheme 940
+#define OBJ_dhSinglePass_stdDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 11L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  "dhSinglePass-cofactorDH-sha1kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha1kdf_scheme 941
+#define OBJ_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha224kdf_scheme \
+  "dhSinglePass-cofactorDH-sha224kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha224kdf_scheme 942
+#define OBJ_dhSinglePass_cofactorDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 14L, 0L
+
+#define SN_dhSinglePass_cofactorDH_sha256kdf_scheme \
+  "dhSinglePass-cofactorDH-sha256kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha256kdf_scheme 943
+#define OBJ_dhSinglePass_cofactorDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 14L, 1L
+
+#define SN_dhSinglePass_cofactorDH_sha384kdf_scheme \
+  "dhSinglePass-cofactorDH-sha384kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha384kdf_scheme 944
+#define OBJ_dhSinglePass_cofactorDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 14L, 2L
+
+#define SN_dhSinglePass_cofactorDH_sha512kdf_scheme \
+  "dhSinglePass-cofactorDH-sha512kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha512kdf_scheme 945
+#define OBJ_dhSinglePass_cofactorDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 14L, 3L
+
+#define SN_dh_std_kdf "dh-std-kdf"
+#define NID_dh_std_kdf 946
+
+#define SN_dh_cofactor_kdf "dh-cofactor-kdf"
+#define NID_dh_cofactor_kdf 947
+
+#define SN_X25519 "X25519"
+#define NID_X25519 948
+#define OBJ_X25519 1L, 3L, 101L, 110L
+
+#define SN_ED25519 "ED25519"
+#define NID_ED25519 949
+#define OBJ_ED25519 1L, 3L, 101L, 112L
+
+#define SN_chacha20_poly1305 "ChaCha20-Poly1305"
+#define LN_chacha20_poly1305 "chacha20-poly1305"
+#define NID_chacha20_poly1305 950
+
+#define SN_kx_rsa "KxRSA"
+#define LN_kx_rsa "kx-rsa"
+#define NID_kx_rsa 951
+
+#define SN_kx_ecdhe "KxECDHE"
+#define LN_kx_ecdhe "kx-ecdhe"
+#define NID_kx_ecdhe 952
+
+#define SN_kx_psk "KxPSK"
+#define LN_kx_psk "kx-psk"
+#define NID_kx_psk 953
+
+#define SN_auth_rsa "AuthRSA"
+#define LN_auth_rsa "auth-rsa"
+#define NID_auth_rsa 954
+
+#define SN_auth_ecdsa "AuthECDSA"
+#define LN_auth_ecdsa "auth-ecdsa"
+#define NID_auth_ecdsa 955
+
+#define SN_auth_psk "AuthPSK"
+#define LN_auth_psk "auth-psk"
+#define NID_auth_psk 956
+
+#define SN_kx_any "KxANY"
+#define LN_kx_any "kx-any"
+#define NID_kx_any 957
+
+#define SN_auth_any "AuthANY"
+#define LN_auth_any "auth-any"
+#define NID_auth_any 958
+
+#define SN_CECPQ2 "CECPQ2"
+#define NID_CECPQ2 959
+
+#define SN_ED448 "ED448"
+#define NID_ED448 960
+#define OBJ_ED448 1L, 3L, 101L, 113L
+
+#define SN_X448 "X448"
+#define NID_X448 961
+#define OBJ_X448 1L, 3L, 101L, 111L
+
+
+#if defined(__cplusplus)
+} /* extern C */
+#endif
+
+#endif /* OPENSSL_HEADER_NID_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.grpc_back
new file mode 100644
index 0000000..a15f4e3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/nid.h.grpc_back	
@@ -0,0 +1,4254 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+/* This file is generated by crypto/obj/objects.go. */
+
+#ifndef OPENSSL_HEADER_NID_H
+#define OPENSSL_HEADER_NID_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* The nid library provides numbered values for ASN.1 object identifiers and
+ * other symbols. These values are used by other libraries to identify
+ * cryptographic primitives.
+ *
+ * A separate objects library, obj.h, provides functions for converting between
+ * nids and object identifiers. However it depends on large internal tables with
+ * the encodings of every nid defined. Consumers concerned with binary size
+ * should instead embed the encodings of the few consumed OIDs and compare
+ * against those.
+ *
+ * These values should not be used outside of a single process; they are not
+ * stable identifiers. */
+
+
+#define SN_undef "UNDEF"
+#define LN_undef "undefined"
+#define NID_undef 0
+#define OBJ_undef 0L
+
+#define SN_rsadsi "rsadsi"
+#define LN_rsadsi "RSA Data Security, Inc."
+#define NID_rsadsi 1
+#define OBJ_rsadsi 1L, 2L, 840L, 113549L
+
+#define SN_pkcs "pkcs"
+#define LN_pkcs "RSA Data Security, Inc. PKCS"
+#define NID_pkcs 2
+#define OBJ_pkcs 1L, 2L, 840L, 113549L, 1L
+
+#define SN_md2 "MD2"
+#define LN_md2 "md2"
+#define NID_md2 3
+#define OBJ_md2 1L, 2L, 840L, 113549L, 2L, 2L
+
+#define SN_md5 "MD5"
+#define LN_md5 "md5"
+#define NID_md5 4
+#define OBJ_md5 1L, 2L, 840L, 113549L, 2L, 5L
+
+#define SN_rc4 "RC4"
+#define LN_rc4 "rc4"
+#define NID_rc4 5
+#define OBJ_rc4 1L, 2L, 840L, 113549L, 3L, 4L
+
+#define LN_rsaEncryption "rsaEncryption"
+#define NID_rsaEncryption 6
+#define OBJ_rsaEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 1L
+
+#define SN_md2WithRSAEncryption "RSA-MD2"
+#define LN_md2WithRSAEncryption "md2WithRSAEncryption"
+#define NID_md2WithRSAEncryption 7
+#define OBJ_md2WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 2L
+
+#define SN_md5WithRSAEncryption "RSA-MD5"
+#define LN_md5WithRSAEncryption "md5WithRSAEncryption"
+#define NID_md5WithRSAEncryption 8
+#define OBJ_md5WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 4L
+
+#define SN_pbeWithMD2AndDES_CBC "PBE-MD2-DES"
+#define LN_pbeWithMD2AndDES_CBC "pbeWithMD2AndDES-CBC"
+#define NID_pbeWithMD2AndDES_CBC 9
+#define OBJ_pbeWithMD2AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 1L
+
+#define SN_pbeWithMD5AndDES_CBC "PBE-MD5-DES"
+#define LN_pbeWithMD5AndDES_CBC "pbeWithMD5AndDES-CBC"
+#define NID_pbeWithMD5AndDES_CBC 10
+#define OBJ_pbeWithMD5AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 3L
+
+#define SN_X500 "X500"
+#define LN_X500 "directory services (X.500)"
+#define NID_X500 11
+#define OBJ_X500 2L, 5L
+
+#define SN_X509 "X509"
+#define NID_X509 12
+#define OBJ_X509 2L, 5L, 4L
+
+#define SN_commonName "CN"
+#define LN_commonName "commonName"
+#define NID_commonName 13
+#define OBJ_commonName 2L, 5L, 4L, 3L
+
+#define SN_countryName "C"
+#define LN_countryName "countryName"
+#define NID_countryName 14
+#define OBJ_countryName 2L, 5L, 4L, 6L
+
+#define SN_localityName "L"
+#define LN_localityName "localityName"
+#define NID_localityName 15
+#define OBJ_localityName 2L, 5L, 4L, 7L
+
+#define SN_stateOrProvinceName "ST"
+#define LN_stateOrProvinceName "stateOrProvinceName"
+#define NID_stateOrProvinceName 16
+#define OBJ_stateOrProvinceName 2L, 5L, 4L, 8L
+
+#define SN_organizationName "O"
+#define LN_organizationName "organizationName"
+#define NID_organizationName 17
+#define OBJ_organizationName 2L, 5L, 4L, 10L
+
+#define SN_organizationalUnitName "OU"
+#define LN_organizationalUnitName "organizationalUnitName"
+#define NID_organizationalUnitName 18
+#define OBJ_organizationalUnitName 2L, 5L, 4L, 11L
+
+#define SN_rsa "RSA"
+#define LN_rsa "rsa"
+#define NID_rsa 19
+#define OBJ_rsa 2L, 5L, 8L, 1L, 1L
+
+#define SN_pkcs7 "pkcs7"
+#define NID_pkcs7 20
+#define OBJ_pkcs7 1L, 2L, 840L, 113549L, 1L, 7L
+
+#define LN_pkcs7_data "pkcs7-data"
+#define NID_pkcs7_data 21
+#define OBJ_pkcs7_data 1L, 2L, 840L, 113549L, 1L, 7L, 1L
+
+#define LN_pkcs7_signed "pkcs7-signedData"
+#define NID_pkcs7_signed 22
+#define OBJ_pkcs7_signed 1L, 2L, 840L, 113549L, 1L, 7L, 2L
+
+#define LN_pkcs7_enveloped "pkcs7-envelopedData"
+#define NID_pkcs7_enveloped 23
+#define OBJ_pkcs7_enveloped 1L, 2L, 840L, 113549L, 1L, 7L, 3L
+
+#define LN_pkcs7_signedAndEnveloped "pkcs7-signedAndEnvelopedData"
+#define NID_pkcs7_signedAndEnveloped 24
+#define OBJ_pkcs7_signedAndEnveloped 1L, 2L, 840L, 113549L, 1L, 7L, 4L
+
+#define LN_pkcs7_digest "pkcs7-digestData"
+#define NID_pkcs7_digest 25
+#define OBJ_pkcs7_digest 1L, 2L, 840L, 113549L, 1L, 7L, 5L
+
+#define LN_pkcs7_encrypted "pkcs7-encryptedData"
+#define NID_pkcs7_encrypted 26
+#define OBJ_pkcs7_encrypted 1L, 2L, 840L, 113549L, 1L, 7L, 6L
+
+#define SN_pkcs3 "pkcs3"
+#define NID_pkcs3 27
+#define OBJ_pkcs3 1L, 2L, 840L, 113549L, 1L, 3L
+
+#define LN_dhKeyAgreement "dhKeyAgreement"
+#define NID_dhKeyAgreement 28
+#define OBJ_dhKeyAgreement 1L, 2L, 840L, 113549L, 1L, 3L, 1L
+
+#define SN_des_ecb "DES-ECB"
+#define LN_des_ecb "des-ecb"
+#define NID_des_ecb 29
+#define OBJ_des_ecb 1L, 3L, 14L, 3L, 2L, 6L
+
+#define SN_des_cfb64 "DES-CFB"
+#define LN_des_cfb64 "des-cfb"
+#define NID_des_cfb64 30
+#define OBJ_des_cfb64 1L, 3L, 14L, 3L, 2L, 9L
+
+#define SN_des_cbc "DES-CBC"
+#define LN_des_cbc "des-cbc"
+#define NID_des_cbc 31
+#define OBJ_des_cbc 1L, 3L, 14L, 3L, 2L, 7L
+
+#define SN_des_ede_ecb "DES-EDE"
+#define LN_des_ede_ecb "des-ede"
+#define NID_des_ede_ecb 32
+#define OBJ_des_ede_ecb 1L, 3L, 14L, 3L, 2L, 17L
+
+#define SN_des_ede3_ecb "DES-EDE3"
+#define LN_des_ede3_ecb "des-ede3"
+#define NID_des_ede3_ecb 33
+
+#define SN_idea_cbc "IDEA-CBC"
+#define LN_idea_cbc "idea-cbc"
+#define NID_idea_cbc 34
+#define OBJ_idea_cbc 1L, 3L, 6L, 1L, 4L, 1L, 188L, 7L, 1L, 1L, 2L
+
+#define SN_idea_cfb64 "IDEA-CFB"
+#define LN_idea_cfb64 "idea-cfb"
+#define NID_idea_cfb64 35
+
+#define SN_idea_ecb "IDEA-ECB"
+#define LN_idea_ecb "idea-ecb"
+#define NID_idea_ecb 36
+
+#define SN_rc2_cbc "RC2-CBC"
+#define LN_rc2_cbc "rc2-cbc"
+#define NID_rc2_cbc 37
+#define OBJ_rc2_cbc 1L, 2L, 840L, 113549L, 3L, 2L
+
+#define SN_rc2_ecb "RC2-ECB"
+#define LN_rc2_ecb "rc2-ecb"
+#define NID_rc2_ecb 38
+
+#define SN_rc2_cfb64 "RC2-CFB"
+#define LN_rc2_cfb64 "rc2-cfb"
+#define NID_rc2_cfb64 39
+
+#define SN_rc2_ofb64 "RC2-OFB"
+#define LN_rc2_ofb64 "rc2-ofb"
+#define NID_rc2_ofb64 40
+
+#define SN_sha "SHA"
+#define LN_sha "sha"
+#define NID_sha 41
+#define OBJ_sha 1L, 3L, 14L, 3L, 2L, 18L
+
+#define SN_shaWithRSAEncryption "RSA-SHA"
+#define LN_shaWithRSAEncryption "shaWithRSAEncryption"
+#define NID_shaWithRSAEncryption 42
+#define OBJ_shaWithRSAEncryption 1L, 3L, 14L, 3L, 2L, 15L
+
+#define SN_des_ede_cbc "DES-EDE-CBC"
+#define LN_des_ede_cbc "des-ede-cbc"
+#define NID_des_ede_cbc 43
+
+#define SN_des_ede3_cbc "DES-EDE3-CBC"
+#define LN_des_ede3_cbc "des-ede3-cbc"
+#define NID_des_ede3_cbc 44
+#define OBJ_des_ede3_cbc 1L, 2L, 840L, 113549L, 3L, 7L
+
+#define SN_des_ofb64 "DES-OFB"
+#define LN_des_ofb64 "des-ofb"
+#define NID_des_ofb64 45
+#define OBJ_des_ofb64 1L, 3L, 14L, 3L, 2L, 8L
+
+#define SN_idea_ofb64 "IDEA-OFB"
+#define LN_idea_ofb64 "idea-ofb"
+#define NID_idea_ofb64 46
+
+#define SN_pkcs9 "pkcs9"
+#define NID_pkcs9 47
+#define OBJ_pkcs9 1L, 2L, 840L, 113549L, 1L, 9L
+
+#define LN_pkcs9_emailAddress "emailAddress"
+#define NID_pkcs9_emailAddress 48
+#define OBJ_pkcs9_emailAddress 1L, 2L, 840L, 113549L, 1L, 9L, 1L
+
+#define LN_pkcs9_unstructuredName "unstructuredName"
+#define NID_pkcs9_unstructuredName 49
+#define OBJ_pkcs9_unstructuredName 1L, 2L, 840L, 113549L, 1L, 9L, 2L
+
+#define LN_pkcs9_contentType "contentType"
+#define NID_pkcs9_contentType 50
+#define OBJ_pkcs9_contentType 1L, 2L, 840L, 113549L, 1L, 9L, 3L
+
+#define LN_pkcs9_messageDigest "messageDigest"
+#define NID_pkcs9_messageDigest 51
+#define OBJ_pkcs9_messageDigest 1L, 2L, 840L, 113549L, 1L, 9L, 4L
+
+#define LN_pkcs9_signingTime "signingTime"
+#define NID_pkcs9_signingTime 52
+#define OBJ_pkcs9_signingTime 1L, 2L, 840L, 113549L, 1L, 9L, 5L
+
+#define LN_pkcs9_countersignature "countersignature"
+#define NID_pkcs9_countersignature 53
+#define OBJ_pkcs9_countersignature 1L, 2L, 840L, 113549L, 1L, 9L, 6L
+
+#define LN_pkcs9_challengePassword "challengePassword"
+#define NID_pkcs9_challengePassword 54
+#define OBJ_pkcs9_challengePassword 1L, 2L, 840L, 113549L, 1L, 9L, 7L
+
+#define LN_pkcs9_unstructuredAddress "unstructuredAddress"
+#define NID_pkcs9_unstructuredAddress 55
+#define OBJ_pkcs9_unstructuredAddress 1L, 2L, 840L, 113549L, 1L, 9L, 8L
+
+#define LN_pkcs9_extCertAttributes "extendedCertificateAttributes"
+#define NID_pkcs9_extCertAttributes 56
+#define OBJ_pkcs9_extCertAttributes 1L, 2L, 840L, 113549L, 1L, 9L, 9L
+
+#define SN_netscape "Netscape"
+#define LN_netscape "Netscape Communications Corp."
+#define NID_netscape 57
+#define OBJ_netscape 2L, 16L, 840L, 1L, 113730L
+
+#define SN_netscape_cert_extension "nsCertExt"
+#define LN_netscape_cert_extension "Netscape Certificate Extension"
+#define NID_netscape_cert_extension 58
+#define OBJ_netscape_cert_extension 2L, 16L, 840L, 1L, 113730L, 1L
+
+#define SN_netscape_data_type "nsDataType"
+#define LN_netscape_data_type "Netscape Data Type"
+#define NID_netscape_data_type 59
+#define OBJ_netscape_data_type 2L, 16L, 840L, 1L, 113730L, 2L
+
+#define SN_des_ede_cfb64 "DES-EDE-CFB"
+#define LN_des_ede_cfb64 "des-ede-cfb"
+#define NID_des_ede_cfb64 60
+
+#define SN_des_ede3_cfb64 "DES-EDE3-CFB"
+#define LN_des_ede3_cfb64 "des-ede3-cfb"
+#define NID_des_ede3_cfb64 61
+
+#define SN_des_ede_ofb64 "DES-EDE-OFB"
+#define LN_des_ede_ofb64 "des-ede-ofb"
+#define NID_des_ede_ofb64 62
+
+#define SN_des_ede3_ofb64 "DES-EDE3-OFB"
+#define LN_des_ede3_ofb64 "des-ede3-ofb"
+#define NID_des_ede3_ofb64 63
+
+#define SN_sha1 "SHA1"
+#define LN_sha1 "sha1"
+#define NID_sha1 64
+#define OBJ_sha1 1L, 3L, 14L, 3L, 2L, 26L
+
+#define SN_sha1WithRSAEncryption "RSA-SHA1"
+#define LN_sha1WithRSAEncryption "sha1WithRSAEncryption"
+#define NID_sha1WithRSAEncryption 65
+#define OBJ_sha1WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 5L
+
+#define SN_dsaWithSHA "DSA-SHA"
+#define LN_dsaWithSHA "dsaWithSHA"
+#define NID_dsaWithSHA 66
+#define OBJ_dsaWithSHA 1L, 3L, 14L, 3L, 2L, 13L
+
+#define SN_dsa_2 "DSA-old"
+#define LN_dsa_2 "dsaEncryption-old"
+#define NID_dsa_2 67
+#define OBJ_dsa_2 1L, 3L, 14L, 3L, 2L, 12L
+
+#define SN_pbeWithSHA1AndRC2_CBC "PBE-SHA1-RC2-64"
+#define LN_pbeWithSHA1AndRC2_CBC "pbeWithSHA1AndRC2-CBC"
+#define NID_pbeWithSHA1AndRC2_CBC 68
+#define OBJ_pbeWithSHA1AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 11L
+
+#define LN_id_pbkdf2 "PBKDF2"
+#define NID_id_pbkdf2 69
+#define OBJ_id_pbkdf2 1L, 2L, 840L, 113549L, 1L, 5L, 12L
+
+#define SN_dsaWithSHA1_2 "DSA-SHA1-old"
+#define LN_dsaWithSHA1_2 "dsaWithSHA1-old"
+#define NID_dsaWithSHA1_2 70
+#define OBJ_dsaWithSHA1_2 1L, 3L, 14L, 3L, 2L, 27L
+
+#define SN_netscape_cert_type "nsCertType"
+#define LN_netscape_cert_type "Netscape Cert Type"
+#define NID_netscape_cert_type 71
+#define OBJ_netscape_cert_type 2L, 16L, 840L, 1L, 113730L, 1L, 1L
+
+#define SN_netscape_base_url "nsBaseUrl"
+#define LN_netscape_base_url "Netscape Base Url"
+#define NID_netscape_base_url 72
+#define OBJ_netscape_base_url 2L, 16L, 840L, 1L, 113730L, 1L, 2L
+
+#define SN_netscape_revocation_url "nsRevocationUrl"
+#define LN_netscape_revocation_url "Netscape Revocation Url"
+#define NID_netscape_revocation_url 73
+#define OBJ_netscape_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 3L
+
+#define SN_netscape_ca_revocation_url "nsCaRevocationUrl"
+#define LN_netscape_ca_revocation_url "Netscape CA Revocation Url"
+#define NID_netscape_ca_revocation_url 74
+#define OBJ_netscape_ca_revocation_url 2L, 16L, 840L, 1L, 113730L, 1L, 4L
+
+#define SN_netscape_renewal_url "nsRenewalUrl"
+#define LN_netscape_renewal_url "Netscape Renewal Url"
+#define NID_netscape_renewal_url 75
+#define OBJ_netscape_renewal_url 2L, 16L, 840L, 1L, 113730L, 1L, 7L
+
+#define SN_netscape_ca_policy_url "nsCaPolicyUrl"
+#define LN_netscape_ca_policy_url "Netscape CA Policy Url"
+#define NID_netscape_ca_policy_url 76
+#define OBJ_netscape_ca_policy_url 2L, 16L, 840L, 1L, 113730L, 1L, 8L
+
+#define SN_netscape_ssl_server_name "nsSslServerName"
+#define LN_netscape_ssl_server_name "Netscape SSL Server Name"
+#define NID_netscape_ssl_server_name 77
+#define OBJ_netscape_ssl_server_name 2L, 16L, 840L, 1L, 113730L, 1L, 12L
+
+#define SN_netscape_comment "nsComment"
+#define LN_netscape_comment "Netscape Comment"
+#define NID_netscape_comment 78
+#define OBJ_netscape_comment 2L, 16L, 840L, 1L, 113730L, 1L, 13L
+
+#define SN_netscape_cert_sequence "nsCertSequence"
+#define LN_netscape_cert_sequence "Netscape Certificate Sequence"
+#define NID_netscape_cert_sequence 79
+#define OBJ_netscape_cert_sequence 2L, 16L, 840L, 1L, 113730L, 2L, 5L
+
+#define SN_desx_cbc "DESX-CBC"
+#define LN_desx_cbc "desx-cbc"
+#define NID_desx_cbc 80
+
+#define SN_id_ce "id-ce"
+#define NID_id_ce 81
+#define OBJ_id_ce 2L, 5L, 29L
+
+#define SN_subject_key_identifier "subjectKeyIdentifier"
+#define LN_subject_key_identifier "X509v3 Subject Key Identifier"
+#define NID_subject_key_identifier 82
+#define OBJ_subject_key_identifier 2L, 5L, 29L, 14L
+
+#define SN_key_usage "keyUsage"
+#define LN_key_usage "X509v3 Key Usage"
+#define NID_key_usage 83
+#define OBJ_key_usage 2L, 5L, 29L, 15L
+
+#define SN_private_key_usage_period "privateKeyUsagePeriod"
+#define LN_private_key_usage_period "X509v3 Private Key Usage Period"
+#define NID_private_key_usage_period 84
+#define OBJ_private_key_usage_period 2L, 5L, 29L, 16L
+
+#define SN_subject_alt_name "subjectAltName"
+#define LN_subject_alt_name "X509v3 Subject Alternative Name"
+#define NID_subject_alt_name 85
+#define OBJ_subject_alt_name 2L, 5L, 29L, 17L
+
+#define SN_issuer_alt_name "issuerAltName"
+#define LN_issuer_alt_name "X509v3 Issuer Alternative Name"
+#define NID_issuer_alt_name 86
+#define OBJ_issuer_alt_name 2L, 5L, 29L, 18L
+
+#define SN_basic_constraints "basicConstraints"
+#define LN_basic_constraints "X509v3 Basic Constraints"
+#define NID_basic_constraints 87
+#define OBJ_basic_constraints 2L, 5L, 29L, 19L
+
+#define SN_crl_number "crlNumber"
+#define LN_crl_number "X509v3 CRL Number"
+#define NID_crl_number 88
+#define OBJ_crl_number 2L, 5L, 29L, 20L
+
+#define SN_certificate_policies "certificatePolicies"
+#define LN_certificate_policies "X509v3 Certificate Policies"
+#define NID_certificate_policies 89
+#define OBJ_certificate_policies 2L, 5L, 29L, 32L
+
+#define SN_authority_key_identifier "authorityKeyIdentifier"
+#define LN_authority_key_identifier "X509v3 Authority Key Identifier"
+#define NID_authority_key_identifier 90
+#define OBJ_authority_key_identifier 2L, 5L, 29L, 35L
+
+#define SN_bf_cbc "BF-CBC"
+#define LN_bf_cbc "bf-cbc"
+#define NID_bf_cbc 91
+#define OBJ_bf_cbc 1L, 3L, 6L, 1L, 4L, 1L, 3029L, 1L, 2L
+
+#define SN_bf_ecb "BF-ECB"
+#define LN_bf_ecb "bf-ecb"
+#define NID_bf_ecb 92
+
+#define SN_bf_cfb64 "BF-CFB"
+#define LN_bf_cfb64 "bf-cfb"
+#define NID_bf_cfb64 93
+
+#define SN_bf_ofb64 "BF-OFB"
+#define LN_bf_ofb64 "bf-ofb"
+#define NID_bf_ofb64 94
+
+#define SN_mdc2 "MDC2"
+#define LN_mdc2 "mdc2"
+#define NID_mdc2 95
+#define OBJ_mdc2 2L, 5L, 8L, 3L, 101L
+
+#define SN_mdc2WithRSA "RSA-MDC2"
+#define LN_mdc2WithRSA "mdc2WithRSA"
+#define NID_mdc2WithRSA 96
+#define OBJ_mdc2WithRSA 2L, 5L, 8L, 3L, 100L
+
+#define SN_rc4_40 "RC4-40"
+#define LN_rc4_40 "rc4-40"
+#define NID_rc4_40 97
+
+#define SN_rc2_40_cbc "RC2-40-CBC"
+#define LN_rc2_40_cbc "rc2-40-cbc"
+#define NID_rc2_40_cbc 98
+
+#define SN_givenName "GN"
+#define LN_givenName "givenName"
+#define NID_givenName 99
+#define OBJ_givenName 2L, 5L, 4L, 42L
+
+#define SN_surname "SN"
+#define LN_surname "surname"
+#define NID_surname 100
+#define OBJ_surname 2L, 5L, 4L, 4L
+
+#define SN_initials "initials"
+#define LN_initials "initials"
+#define NID_initials 101
+#define OBJ_initials 2L, 5L, 4L, 43L
+
+#define SN_crl_distribution_points "crlDistributionPoints"
+#define LN_crl_distribution_points "X509v3 CRL Distribution Points"
+#define NID_crl_distribution_points 103
+#define OBJ_crl_distribution_points 2L, 5L, 29L, 31L
+
+#define SN_md5WithRSA "RSA-NP-MD5"
+#define LN_md5WithRSA "md5WithRSA"
+#define NID_md5WithRSA 104
+#define OBJ_md5WithRSA 1L, 3L, 14L, 3L, 2L, 3L
+
+#define LN_serialNumber "serialNumber"
+#define NID_serialNumber 105
+#define OBJ_serialNumber 2L, 5L, 4L, 5L
+
+#define SN_title "title"
+#define LN_title "title"
+#define NID_title 106
+#define OBJ_title 2L, 5L, 4L, 12L
+
+#define LN_description "description"
+#define NID_description 107
+#define OBJ_description 2L, 5L, 4L, 13L
+
+#define SN_cast5_cbc "CAST5-CBC"
+#define LN_cast5_cbc "cast5-cbc"
+#define NID_cast5_cbc 108
+#define OBJ_cast5_cbc 1L, 2L, 840L, 113533L, 7L, 66L, 10L
+
+#define SN_cast5_ecb "CAST5-ECB"
+#define LN_cast5_ecb "cast5-ecb"
+#define NID_cast5_ecb 109
+
+#define SN_cast5_cfb64 "CAST5-CFB"
+#define LN_cast5_cfb64 "cast5-cfb"
+#define NID_cast5_cfb64 110
+
+#define SN_cast5_ofb64 "CAST5-OFB"
+#define LN_cast5_ofb64 "cast5-ofb"
+#define NID_cast5_ofb64 111
+
+#define LN_pbeWithMD5AndCast5_CBC "pbeWithMD5AndCast5CBC"
+#define NID_pbeWithMD5AndCast5_CBC 112
+#define OBJ_pbeWithMD5AndCast5_CBC 1L, 2L, 840L, 113533L, 7L, 66L, 12L
+
+#define SN_dsaWithSHA1 "DSA-SHA1"
+#define LN_dsaWithSHA1 "dsaWithSHA1"
+#define NID_dsaWithSHA1 113
+#define OBJ_dsaWithSHA1 1L, 2L, 840L, 10040L, 4L, 3L
+
+#define SN_md5_sha1 "MD5-SHA1"
+#define LN_md5_sha1 "md5-sha1"
+#define NID_md5_sha1 114
+
+#define SN_sha1WithRSA "RSA-SHA1-2"
+#define LN_sha1WithRSA "sha1WithRSA"
+#define NID_sha1WithRSA 115
+#define OBJ_sha1WithRSA 1L, 3L, 14L, 3L, 2L, 29L
+
+#define SN_dsa "DSA"
+#define LN_dsa "dsaEncryption"
+#define NID_dsa 116
+#define OBJ_dsa 1L, 2L, 840L, 10040L, 4L, 1L
+
+#define SN_ripemd160 "RIPEMD160"
+#define LN_ripemd160 "ripemd160"
+#define NID_ripemd160 117
+#define OBJ_ripemd160 1L, 3L, 36L, 3L, 2L, 1L
+
+#define SN_ripemd160WithRSA "RSA-RIPEMD160"
+#define LN_ripemd160WithRSA "ripemd160WithRSA"
+#define NID_ripemd160WithRSA 119
+#define OBJ_ripemd160WithRSA 1L, 3L, 36L, 3L, 3L, 1L, 2L
+
+#define SN_rc5_cbc "RC5-CBC"
+#define LN_rc5_cbc "rc5-cbc"
+#define NID_rc5_cbc 120
+#define OBJ_rc5_cbc 1L, 2L, 840L, 113549L, 3L, 8L
+
+#define SN_rc5_ecb "RC5-ECB"
+#define LN_rc5_ecb "rc5-ecb"
+#define NID_rc5_ecb 121
+
+#define SN_rc5_cfb64 "RC5-CFB"
+#define LN_rc5_cfb64 "rc5-cfb"
+#define NID_rc5_cfb64 122
+
+#define SN_rc5_ofb64 "RC5-OFB"
+#define LN_rc5_ofb64 "rc5-ofb"
+#define NID_rc5_ofb64 123
+
+#define SN_zlib_compression "ZLIB"
+#define LN_zlib_compression "zlib compression"
+#define NID_zlib_compression 125
+#define OBJ_zlib_compression 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 8L
+
+#define SN_ext_key_usage "extendedKeyUsage"
+#define LN_ext_key_usage "X509v3 Extended Key Usage"
+#define NID_ext_key_usage 126
+#define OBJ_ext_key_usage 2L, 5L, 29L, 37L
+
+#define SN_id_pkix "PKIX"
+#define NID_id_pkix 127
+#define OBJ_id_pkix 1L, 3L, 6L, 1L, 5L, 5L, 7L
+
+#define SN_id_kp "id-kp"
+#define NID_id_kp 128
+#define OBJ_id_kp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L
+
+#define SN_server_auth "serverAuth"
+#define LN_server_auth "TLS Web Server Authentication"
+#define NID_server_auth 129
+#define OBJ_server_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 1L
+
+#define SN_client_auth "clientAuth"
+#define LN_client_auth "TLS Web Client Authentication"
+#define NID_client_auth 130
+#define OBJ_client_auth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 2L
+
+#define SN_code_sign "codeSigning"
+#define LN_code_sign "Code Signing"
+#define NID_code_sign 131
+#define OBJ_code_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 3L
+
+#define SN_email_protect "emailProtection"
+#define LN_email_protect "E-mail Protection"
+#define NID_email_protect 132
+#define OBJ_email_protect 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 4L
+
+#define SN_time_stamp "timeStamping"
+#define LN_time_stamp "Time Stamping"
+#define NID_time_stamp 133
+#define OBJ_time_stamp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 8L
+
+#define SN_ms_code_ind "msCodeInd"
+#define LN_ms_code_ind "Microsoft Individual Code Signing"
+#define NID_ms_code_ind 134
+#define OBJ_ms_code_ind 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 21L
+
+#define SN_ms_code_com "msCodeCom"
+#define LN_ms_code_com "Microsoft Commercial Code Signing"
+#define NID_ms_code_com 135
+#define OBJ_ms_code_com 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 22L
+
+#define SN_ms_ctl_sign "msCTLSign"
+#define LN_ms_ctl_sign "Microsoft Trust List Signing"
+#define NID_ms_ctl_sign 136
+#define OBJ_ms_ctl_sign 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 1L
+
+#define SN_ms_sgc "msSGC"
+#define LN_ms_sgc "Microsoft Server Gated Crypto"
+#define NID_ms_sgc 137
+#define OBJ_ms_sgc 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 3L
+
+#define SN_ms_efs "msEFS"
+#define LN_ms_efs "Microsoft Encrypted File System"
+#define NID_ms_efs 138
+#define OBJ_ms_efs 1L, 3L, 6L, 1L, 4L, 1L, 311L, 10L, 3L, 4L
+
+#define SN_ns_sgc "nsSGC"
+#define LN_ns_sgc "Netscape Server Gated Crypto"
+#define NID_ns_sgc 139
+#define OBJ_ns_sgc 2L, 16L, 840L, 1L, 113730L, 4L, 1L
+
+#define SN_delta_crl "deltaCRL"
+#define LN_delta_crl "X509v3 Delta CRL Indicator"
+#define NID_delta_crl 140
+#define OBJ_delta_crl 2L, 5L, 29L, 27L
+
+#define SN_crl_reason "CRLReason"
+#define LN_crl_reason "X509v3 CRL Reason Code"
+#define NID_crl_reason 141
+#define OBJ_crl_reason 2L, 5L, 29L, 21L
+
+#define SN_invalidity_date "invalidityDate"
+#define LN_invalidity_date "Invalidity Date"
+#define NID_invalidity_date 142
+#define OBJ_invalidity_date 2L, 5L, 29L, 24L
+
+#define SN_sxnet "SXNetID"
+#define LN_sxnet "Strong Extranet ID"
+#define NID_sxnet 143
+#define OBJ_sxnet 1L, 3L, 101L, 1L, 4L, 1L
+
+#define SN_pbe_WithSHA1And128BitRC4 "PBE-SHA1-RC4-128"
+#define LN_pbe_WithSHA1And128BitRC4 "pbeWithSHA1And128BitRC4"
+#define NID_pbe_WithSHA1And128BitRC4 144
+#define OBJ_pbe_WithSHA1And128BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 1L
+
+#define SN_pbe_WithSHA1And40BitRC4 "PBE-SHA1-RC4-40"
+#define LN_pbe_WithSHA1And40BitRC4 "pbeWithSHA1And40BitRC4"
+#define NID_pbe_WithSHA1And40BitRC4 145
+#define OBJ_pbe_WithSHA1And40BitRC4 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 2L
+
+#define SN_pbe_WithSHA1And3_Key_TripleDES_CBC "PBE-SHA1-3DES"
+#define LN_pbe_WithSHA1And3_Key_TripleDES_CBC "pbeWithSHA1And3-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And3_Key_TripleDES_CBC 146
+#define OBJ_pbe_WithSHA1And3_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 3L
+
+#define SN_pbe_WithSHA1And2_Key_TripleDES_CBC "PBE-SHA1-2DES"
+#define LN_pbe_WithSHA1And2_Key_TripleDES_CBC "pbeWithSHA1And2-KeyTripleDES-CBC"
+#define NID_pbe_WithSHA1And2_Key_TripleDES_CBC 147
+#define OBJ_pbe_WithSHA1And2_Key_TripleDES_CBC \
+  1L, 2L, 840L, 113549L, 1L, 12L, 1L, 4L
+
+#define SN_pbe_WithSHA1And128BitRC2_CBC "PBE-SHA1-RC2-128"
+#define LN_pbe_WithSHA1And128BitRC2_CBC "pbeWithSHA1And128BitRC2-CBC"
+#define NID_pbe_WithSHA1And128BitRC2_CBC 148
+#define OBJ_pbe_WithSHA1And128BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 5L
+
+#define SN_pbe_WithSHA1And40BitRC2_CBC "PBE-SHA1-RC2-40"
+#define LN_pbe_WithSHA1And40BitRC2_CBC "pbeWithSHA1And40BitRC2-CBC"
+#define NID_pbe_WithSHA1And40BitRC2_CBC 149
+#define OBJ_pbe_WithSHA1And40BitRC2_CBC 1L, 2L, 840L, 113549L, 1L, 12L, 1L, 6L
+
+#define LN_keyBag "keyBag"
+#define NID_keyBag 150
+#define OBJ_keyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 1L
+
+#define LN_pkcs8ShroudedKeyBag "pkcs8ShroudedKeyBag"
+#define NID_pkcs8ShroudedKeyBag 151
+#define OBJ_pkcs8ShroudedKeyBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 2L
+
+#define LN_certBag "certBag"
+#define NID_certBag 152
+#define OBJ_certBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 3L
+
+#define LN_crlBag "crlBag"
+#define NID_crlBag 153
+#define OBJ_crlBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 4L
+
+#define LN_secretBag "secretBag"
+#define NID_secretBag 154
+#define OBJ_secretBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 5L
+
+#define LN_safeContentsBag "safeContentsBag"
+#define NID_safeContentsBag 155
+#define OBJ_safeContentsBag 1L, 2L, 840L, 113549L, 1L, 12L, 10L, 1L, 6L
+
+#define LN_friendlyName "friendlyName"
+#define NID_friendlyName 156
+#define OBJ_friendlyName 1L, 2L, 840L, 113549L, 1L, 9L, 20L
+
+#define LN_localKeyID "localKeyID"
+#define NID_localKeyID 157
+#define OBJ_localKeyID 1L, 2L, 840L, 113549L, 1L, 9L, 21L
+
+#define LN_x509Certificate "x509Certificate"
+#define NID_x509Certificate 158
+#define OBJ_x509Certificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 1L
+
+#define LN_sdsiCertificate "sdsiCertificate"
+#define NID_sdsiCertificate 159
+#define OBJ_sdsiCertificate 1L, 2L, 840L, 113549L, 1L, 9L, 22L, 2L
+
+#define LN_x509Crl "x509Crl"
+#define NID_x509Crl 160
+#define OBJ_x509Crl 1L, 2L, 840L, 113549L, 1L, 9L, 23L, 1L
+
+#define LN_pbes2 "PBES2"
+#define NID_pbes2 161
+#define OBJ_pbes2 1L, 2L, 840L, 113549L, 1L, 5L, 13L
+
+#define LN_pbmac1 "PBMAC1"
+#define NID_pbmac1 162
+#define OBJ_pbmac1 1L, 2L, 840L, 113549L, 1L, 5L, 14L
+
+#define LN_hmacWithSHA1 "hmacWithSHA1"
+#define NID_hmacWithSHA1 163
+#define OBJ_hmacWithSHA1 1L, 2L, 840L, 113549L, 2L, 7L
+
+#define SN_id_qt_cps "id-qt-cps"
+#define LN_id_qt_cps "Policy Qualifier CPS"
+#define NID_id_qt_cps 164
+#define OBJ_id_qt_cps 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 1L
+
+#define SN_id_qt_unotice "id-qt-unotice"
+#define LN_id_qt_unotice "Policy Qualifier User Notice"
+#define NID_id_qt_unotice 165
+#define OBJ_id_qt_unotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 2L
+
+#define SN_rc2_64_cbc "RC2-64-CBC"
+#define LN_rc2_64_cbc "rc2-64-cbc"
+#define NID_rc2_64_cbc 166
+
+#define SN_SMIMECapabilities "SMIME-CAPS"
+#define LN_SMIMECapabilities "S/MIME Capabilities"
+#define NID_SMIMECapabilities 167
+#define OBJ_SMIMECapabilities 1L, 2L, 840L, 113549L, 1L, 9L, 15L
+
+#define SN_pbeWithMD2AndRC2_CBC "PBE-MD2-RC2-64"
+#define LN_pbeWithMD2AndRC2_CBC "pbeWithMD2AndRC2-CBC"
+#define NID_pbeWithMD2AndRC2_CBC 168
+#define OBJ_pbeWithMD2AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 4L
+
+#define SN_pbeWithMD5AndRC2_CBC "PBE-MD5-RC2-64"
+#define LN_pbeWithMD5AndRC2_CBC "pbeWithMD5AndRC2-CBC"
+#define NID_pbeWithMD5AndRC2_CBC 169
+#define OBJ_pbeWithMD5AndRC2_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 6L
+
+#define SN_pbeWithSHA1AndDES_CBC "PBE-SHA1-DES"
+#define LN_pbeWithSHA1AndDES_CBC "pbeWithSHA1AndDES-CBC"
+#define NID_pbeWithSHA1AndDES_CBC 170
+#define OBJ_pbeWithSHA1AndDES_CBC 1L, 2L, 840L, 113549L, 1L, 5L, 10L
+
+#define SN_ms_ext_req "msExtReq"
+#define LN_ms_ext_req "Microsoft Extension Request"
+#define NID_ms_ext_req 171
+#define OBJ_ms_ext_req 1L, 3L, 6L, 1L, 4L, 1L, 311L, 2L, 1L, 14L
+
+#define SN_ext_req "extReq"
+#define LN_ext_req "Extension Request"
+#define NID_ext_req 172
+#define OBJ_ext_req 1L, 2L, 840L, 113549L, 1L, 9L, 14L
+
+#define SN_name "name"
+#define LN_name "name"
+#define NID_name 173
+#define OBJ_name 2L, 5L, 4L, 41L
+
+#define SN_dnQualifier "dnQualifier"
+#define LN_dnQualifier "dnQualifier"
+#define NID_dnQualifier 174
+#define OBJ_dnQualifier 2L, 5L, 4L, 46L
+
+#define SN_id_pe "id-pe"
+#define NID_id_pe 175
+#define OBJ_id_pe 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L
+
+#define SN_id_ad "id-ad"
+#define NID_id_ad 176
+#define OBJ_id_ad 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L
+
+#define SN_info_access "authorityInfoAccess"
+#define LN_info_access "Authority Information Access"
+#define NID_info_access 177
+#define OBJ_info_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 1L
+
+#define SN_ad_OCSP "OCSP"
+#define LN_ad_OCSP "OCSP"
+#define NID_ad_OCSP 178
+#define OBJ_ad_OCSP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L
+
+#define SN_ad_ca_issuers "caIssuers"
+#define LN_ad_ca_issuers "CA Issuers"
+#define NID_ad_ca_issuers 179
+#define OBJ_ad_ca_issuers 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 2L
+
+#define SN_OCSP_sign "OCSPSigning"
+#define LN_OCSP_sign "OCSP Signing"
+#define NID_OCSP_sign 180
+#define OBJ_OCSP_sign 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 9L
+
+#define SN_iso "ISO"
+#define LN_iso "iso"
+#define NID_iso 181
+#define OBJ_iso 1L
+
+#define SN_member_body "member-body"
+#define LN_member_body "ISO Member Body"
+#define NID_member_body 182
+#define OBJ_member_body 1L, 2L
+
+#define SN_ISO_US "ISO-US"
+#define LN_ISO_US "ISO US Member Body"
+#define NID_ISO_US 183
+#define OBJ_ISO_US 1L, 2L, 840L
+
+#define SN_X9_57 "X9-57"
+#define LN_X9_57 "X9.57"
+#define NID_X9_57 184
+#define OBJ_X9_57 1L, 2L, 840L, 10040L
+
+#define SN_X9cm "X9cm"
+#define LN_X9cm "X9.57 CM ?"
+#define NID_X9cm 185
+#define OBJ_X9cm 1L, 2L, 840L, 10040L, 4L
+
+#define SN_pkcs1 "pkcs1"
+#define NID_pkcs1 186
+#define OBJ_pkcs1 1L, 2L, 840L, 113549L, 1L, 1L
+
+#define SN_pkcs5 "pkcs5"
+#define NID_pkcs5 187
+#define OBJ_pkcs5 1L, 2L, 840L, 113549L, 1L, 5L
+
+#define SN_SMIME "SMIME"
+#define LN_SMIME "S/MIME"
+#define NID_SMIME 188
+#define OBJ_SMIME 1L, 2L, 840L, 113549L, 1L, 9L, 16L
+
+#define SN_id_smime_mod "id-smime-mod"
+#define NID_id_smime_mod 189
+#define OBJ_id_smime_mod 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L
+
+#define SN_id_smime_ct "id-smime-ct"
+#define NID_id_smime_ct 190
+#define OBJ_id_smime_ct 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L
+
+#define SN_id_smime_aa "id-smime-aa"
+#define NID_id_smime_aa 191
+#define OBJ_id_smime_aa 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L
+
+#define SN_id_smime_alg "id-smime-alg"
+#define NID_id_smime_alg 192
+#define OBJ_id_smime_alg 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L
+
+#define SN_id_smime_cd "id-smime-cd"
+#define NID_id_smime_cd 193
+#define OBJ_id_smime_cd 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L
+
+#define SN_id_smime_spq "id-smime-spq"
+#define NID_id_smime_spq 194
+#define OBJ_id_smime_spq 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L
+
+#define SN_id_smime_cti "id-smime-cti"
+#define NID_id_smime_cti 195
+#define OBJ_id_smime_cti 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L
+
+#define SN_id_smime_mod_cms "id-smime-mod-cms"
+#define NID_id_smime_mod_cms 196
+#define OBJ_id_smime_mod_cms 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 1L
+
+#define SN_id_smime_mod_ess "id-smime-mod-ess"
+#define NID_id_smime_mod_ess 197
+#define OBJ_id_smime_mod_ess 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 2L
+
+#define SN_id_smime_mod_oid "id-smime-mod-oid"
+#define NID_id_smime_mod_oid 198
+#define OBJ_id_smime_mod_oid 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 3L
+
+#define SN_id_smime_mod_msg_v3 "id-smime-mod-msg-v3"
+#define NID_id_smime_mod_msg_v3 199
+#define OBJ_id_smime_mod_msg_v3 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 4L
+
+#define SN_id_smime_mod_ets_eSignature_88 "id-smime-mod-ets-eSignature-88"
+#define NID_id_smime_mod_ets_eSignature_88 200
+#define OBJ_id_smime_mod_ets_eSignature_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 5L
+
+#define SN_id_smime_mod_ets_eSignature_97 "id-smime-mod-ets-eSignature-97"
+#define NID_id_smime_mod_ets_eSignature_97 201
+#define OBJ_id_smime_mod_ets_eSignature_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 6L
+
+#define SN_id_smime_mod_ets_eSigPolicy_88 "id-smime-mod-ets-eSigPolicy-88"
+#define NID_id_smime_mod_ets_eSigPolicy_88 202
+#define OBJ_id_smime_mod_ets_eSigPolicy_88 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 7L
+
+#define SN_id_smime_mod_ets_eSigPolicy_97 "id-smime-mod-ets-eSigPolicy-97"
+#define NID_id_smime_mod_ets_eSigPolicy_97 203
+#define OBJ_id_smime_mod_ets_eSigPolicy_97 \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 0L, 8L
+
+#define SN_id_smime_ct_receipt "id-smime-ct-receipt"
+#define NID_id_smime_ct_receipt 204
+#define OBJ_id_smime_ct_receipt 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 1L
+
+#define SN_id_smime_ct_authData "id-smime-ct-authData"
+#define NID_id_smime_ct_authData 205
+#define OBJ_id_smime_ct_authData 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 2L
+
+#define SN_id_smime_ct_publishCert "id-smime-ct-publishCert"
+#define NID_id_smime_ct_publishCert 206
+#define OBJ_id_smime_ct_publishCert 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 3L
+
+#define SN_id_smime_ct_TSTInfo "id-smime-ct-TSTInfo"
+#define NID_id_smime_ct_TSTInfo 207
+#define OBJ_id_smime_ct_TSTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 4L
+
+#define SN_id_smime_ct_TDTInfo "id-smime-ct-TDTInfo"
+#define NID_id_smime_ct_TDTInfo 208
+#define OBJ_id_smime_ct_TDTInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 5L
+
+#define SN_id_smime_ct_contentInfo "id-smime-ct-contentInfo"
+#define NID_id_smime_ct_contentInfo 209
+#define OBJ_id_smime_ct_contentInfo 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 6L
+
+#define SN_id_smime_ct_DVCSRequestData "id-smime-ct-DVCSRequestData"
+#define NID_id_smime_ct_DVCSRequestData 210
+#define OBJ_id_smime_ct_DVCSRequestData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 7L
+
+#define SN_id_smime_ct_DVCSResponseData "id-smime-ct-DVCSResponseData"
+#define NID_id_smime_ct_DVCSResponseData 211
+#define OBJ_id_smime_ct_DVCSResponseData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 8L
+
+#define SN_id_smime_aa_receiptRequest "id-smime-aa-receiptRequest"
+#define NID_id_smime_aa_receiptRequest 212
+#define OBJ_id_smime_aa_receiptRequest \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 1L
+
+#define SN_id_smime_aa_securityLabel "id-smime-aa-securityLabel"
+#define NID_id_smime_aa_securityLabel 213
+#define OBJ_id_smime_aa_securityLabel 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 2L
+
+#define SN_id_smime_aa_mlExpandHistory "id-smime-aa-mlExpandHistory"
+#define NID_id_smime_aa_mlExpandHistory 214
+#define OBJ_id_smime_aa_mlExpandHistory \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 3L
+
+#define SN_id_smime_aa_contentHint "id-smime-aa-contentHint"
+#define NID_id_smime_aa_contentHint 215
+#define OBJ_id_smime_aa_contentHint 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 4L
+
+#define SN_id_smime_aa_msgSigDigest "id-smime-aa-msgSigDigest"
+#define NID_id_smime_aa_msgSigDigest 216
+#define OBJ_id_smime_aa_msgSigDigest 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 5L
+
+#define SN_id_smime_aa_encapContentType "id-smime-aa-encapContentType"
+#define NID_id_smime_aa_encapContentType 217
+#define OBJ_id_smime_aa_encapContentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 6L
+
+#define SN_id_smime_aa_contentIdentifier "id-smime-aa-contentIdentifier"
+#define NID_id_smime_aa_contentIdentifier 218
+#define OBJ_id_smime_aa_contentIdentifier \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 7L
+
+#define SN_id_smime_aa_macValue "id-smime-aa-macValue"
+#define NID_id_smime_aa_macValue 219
+#define OBJ_id_smime_aa_macValue 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 8L
+
+#define SN_id_smime_aa_equivalentLabels "id-smime-aa-equivalentLabels"
+#define NID_id_smime_aa_equivalentLabels 220
+#define OBJ_id_smime_aa_equivalentLabels \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 9L
+
+#define SN_id_smime_aa_contentReference "id-smime-aa-contentReference"
+#define NID_id_smime_aa_contentReference 221
+#define OBJ_id_smime_aa_contentReference \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 10L
+
+#define SN_id_smime_aa_encrypKeyPref "id-smime-aa-encrypKeyPref"
+#define NID_id_smime_aa_encrypKeyPref 222
+#define OBJ_id_smime_aa_encrypKeyPref \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 11L
+
+#define SN_id_smime_aa_signingCertificate "id-smime-aa-signingCertificate"
+#define NID_id_smime_aa_signingCertificate 223
+#define OBJ_id_smime_aa_signingCertificate \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 12L
+
+#define SN_id_smime_aa_smimeEncryptCerts "id-smime-aa-smimeEncryptCerts"
+#define NID_id_smime_aa_smimeEncryptCerts 224
+#define OBJ_id_smime_aa_smimeEncryptCerts \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 13L
+
+#define SN_id_smime_aa_timeStampToken "id-smime-aa-timeStampToken"
+#define NID_id_smime_aa_timeStampToken 225
+#define OBJ_id_smime_aa_timeStampToken \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 14L
+
+#define SN_id_smime_aa_ets_sigPolicyId "id-smime-aa-ets-sigPolicyId"
+#define NID_id_smime_aa_ets_sigPolicyId 226
+#define OBJ_id_smime_aa_ets_sigPolicyId \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 15L
+
+#define SN_id_smime_aa_ets_commitmentType "id-smime-aa-ets-commitmentType"
+#define NID_id_smime_aa_ets_commitmentType 227
+#define OBJ_id_smime_aa_ets_commitmentType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 16L
+
+#define SN_id_smime_aa_ets_signerLocation "id-smime-aa-ets-signerLocation"
+#define NID_id_smime_aa_ets_signerLocation 228
+#define OBJ_id_smime_aa_ets_signerLocation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 17L
+
+#define SN_id_smime_aa_ets_signerAttr "id-smime-aa-ets-signerAttr"
+#define NID_id_smime_aa_ets_signerAttr 229
+#define OBJ_id_smime_aa_ets_signerAttr \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 18L
+
+#define SN_id_smime_aa_ets_otherSigCert "id-smime-aa-ets-otherSigCert"
+#define NID_id_smime_aa_ets_otherSigCert 230
+#define OBJ_id_smime_aa_ets_otherSigCert \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 19L
+
+#define SN_id_smime_aa_ets_contentTimestamp "id-smime-aa-ets-contentTimestamp"
+#define NID_id_smime_aa_ets_contentTimestamp 231
+#define OBJ_id_smime_aa_ets_contentTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 20L
+
+#define SN_id_smime_aa_ets_CertificateRefs "id-smime-aa-ets-CertificateRefs"
+#define NID_id_smime_aa_ets_CertificateRefs 232
+#define OBJ_id_smime_aa_ets_CertificateRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 21L
+
+#define SN_id_smime_aa_ets_RevocationRefs "id-smime-aa-ets-RevocationRefs"
+#define NID_id_smime_aa_ets_RevocationRefs 233
+#define OBJ_id_smime_aa_ets_RevocationRefs \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 22L
+
+#define SN_id_smime_aa_ets_certValues "id-smime-aa-ets-certValues"
+#define NID_id_smime_aa_ets_certValues 234
+#define OBJ_id_smime_aa_ets_certValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 23L
+
+#define SN_id_smime_aa_ets_revocationValues "id-smime-aa-ets-revocationValues"
+#define NID_id_smime_aa_ets_revocationValues 235
+#define OBJ_id_smime_aa_ets_revocationValues \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 24L
+
+#define SN_id_smime_aa_ets_escTimeStamp "id-smime-aa-ets-escTimeStamp"
+#define NID_id_smime_aa_ets_escTimeStamp 236
+#define OBJ_id_smime_aa_ets_escTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 25L
+
+#define SN_id_smime_aa_ets_certCRLTimestamp "id-smime-aa-ets-certCRLTimestamp"
+#define NID_id_smime_aa_ets_certCRLTimestamp 237
+#define OBJ_id_smime_aa_ets_certCRLTimestamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 26L
+
+#define SN_id_smime_aa_ets_archiveTimeStamp "id-smime-aa-ets-archiveTimeStamp"
+#define NID_id_smime_aa_ets_archiveTimeStamp 238
+#define OBJ_id_smime_aa_ets_archiveTimeStamp \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 27L
+
+#define SN_id_smime_aa_signatureType "id-smime-aa-signatureType"
+#define NID_id_smime_aa_signatureType 239
+#define OBJ_id_smime_aa_signatureType \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 28L
+
+#define SN_id_smime_aa_dvcs_dvc "id-smime-aa-dvcs-dvc"
+#define NID_id_smime_aa_dvcs_dvc 240
+#define OBJ_id_smime_aa_dvcs_dvc 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 2L, 29L
+
+#define SN_id_smime_alg_ESDHwith3DES "id-smime-alg-ESDHwith3DES"
+#define NID_id_smime_alg_ESDHwith3DES 241
+#define OBJ_id_smime_alg_ESDHwith3DES 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 1L
+
+#define SN_id_smime_alg_ESDHwithRC2 "id-smime-alg-ESDHwithRC2"
+#define NID_id_smime_alg_ESDHwithRC2 242
+#define OBJ_id_smime_alg_ESDHwithRC2 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 2L
+
+#define SN_id_smime_alg_3DESwrap "id-smime-alg-3DESwrap"
+#define NID_id_smime_alg_3DESwrap 243
+#define OBJ_id_smime_alg_3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 3L
+
+#define SN_id_smime_alg_RC2wrap "id-smime-alg-RC2wrap"
+#define NID_id_smime_alg_RC2wrap 244
+#define OBJ_id_smime_alg_RC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 4L
+
+#define SN_id_smime_alg_ESDH "id-smime-alg-ESDH"
+#define NID_id_smime_alg_ESDH 245
+#define OBJ_id_smime_alg_ESDH 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 5L
+
+#define SN_id_smime_alg_CMS3DESwrap "id-smime-alg-CMS3DESwrap"
+#define NID_id_smime_alg_CMS3DESwrap 246
+#define OBJ_id_smime_alg_CMS3DESwrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 6L
+
+#define SN_id_smime_alg_CMSRC2wrap "id-smime-alg-CMSRC2wrap"
+#define NID_id_smime_alg_CMSRC2wrap 247
+#define OBJ_id_smime_alg_CMSRC2wrap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 7L
+
+#define SN_id_smime_cd_ldap "id-smime-cd-ldap"
+#define NID_id_smime_cd_ldap 248
+#define OBJ_id_smime_cd_ldap 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 4L, 1L
+
+#define SN_id_smime_spq_ets_sqt_uri "id-smime-spq-ets-sqt-uri"
+#define NID_id_smime_spq_ets_sqt_uri 249
+#define OBJ_id_smime_spq_ets_sqt_uri 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 1L
+
+#define SN_id_smime_spq_ets_sqt_unotice "id-smime-spq-ets-sqt-unotice"
+#define NID_id_smime_spq_ets_sqt_unotice 250
+#define OBJ_id_smime_spq_ets_sqt_unotice \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 5L, 2L
+
+#define SN_id_smime_cti_ets_proofOfOrigin "id-smime-cti-ets-proofOfOrigin"
+#define NID_id_smime_cti_ets_proofOfOrigin 251
+#define OBJ_id_smime_cti_ets_proofOfOrigin \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 1L
+
+#define SN_id_smime_cti_ets_proofOfReceipt "id-smime-cti-ets-proofOfReceipt"
+#define NID_id_smime_cti_ets_proofOfReceipt 252
+#define OBJ_id_smime_cti_ets_proofOfReceipt \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 2L
+
+#define SN_id_smime_cti_ets_proofOfDelivery "id-smime-cti-ets-proofOfDelivery"
+#define NID_id_smime_cti_ets_proofOfDelivery 253
+#define OBJ_id_smime_cti_ets_proofOfDelivery \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 3L
+
+#define SN_id_smime_cti_ets_proofOfSender "id-smime-cti-ets-proofOfSender"
+#define NID_id_smime_cti_ets_proofOfSender 254
+#define OBJ_id_smime_cti_ets_proofOfSender \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 4L
+
+#define SN_id_smime_cti_ets_proofOfApproval "id-smime-cti-ets-proofOfApproval"
+#define NID_id_smime_cti_ets_proofOfApproval 255
+#define OBJ_id_smime_cti_ets_proofOfApproval \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 5L
+
+#define SN_id_smime_cti_ets_proofOfCreation "id-smime-cti-ets-proofOfCreation"
+#define NID_id_smime_cti_ets_proofOfCreation 256
+#define OBJ_id_smime_cti_ets_proofOfCreation \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 6L, 6L
+
+#define SN_md4 "MD4"
+#define LN_md4 "md4"
+#define NID_md4 257
+#define OBJ_md4 1L, 2L, 840L, 113549L, 2L, 4L
+
+#define SN_id_pkix_mod "id-pkix-mod"
+#define NID_id_pkix_mod 258
+#define OBJ_id_pkix_mod 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L
+
+#define SN_id_qt "id-qt"
+#define NID_id_qt 259
+#define OBJ_id_qt 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L
+
+#define SN_id_it "id-it"
+#define NID_id_it 260
+#define OBJ_id_it 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L
+
+#define SN_id_pkip "id-pkip"
+#define NID_id_pkip 261
+#define OBJ_id_pkip 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L
+
+#define SN_id_alg "id-alg"
+#define NID_id_alg 262
+#define OBJ_id_alg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L
+
+#define SN_id_cmc "id-cmc"
+#define NID_id_cmc 263
+#define OBJ_id_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L
+
+#define SN_id_on "id-on"
+#define NID_id_on 264
+#define OBJ_id_on 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L
+
+#define SN_id_pda "id-pda"
+#define NID_id_pda 265
+#define OBJ_id_pda 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L
+
+#define SN_id_aca "id-aca"
+#define NID_id_aca 266
+#define OBJ_id_aca 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L
+
+#define SN_id_qcs "id-qcs"
+#define NID_id_qcs 267
+#define OBJ_id_qcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L
+
+#define SN_id_cct "id-cct"
+#define NID_id_cct 268
+#define OBJ_id_cct 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L
+
+#define SN_id_pkix1_explicit_88 "id-pkix1-explicit-88"
+#define NID_id_pkix1_explicit_88 269
+#define OBJ_id_pkix1_explicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 1L
+
+#define SN_id_pkix1_implicit_88 "id-pkix1-implicit-88"
+#define NID_id_pkix1_implicit_88 270
+#define OBJ_id_pkix1_implicit_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 2L
+
+#define SN_id_pkix1_explicit_93 "id-pkix1-explicit-93"
+#define NID_id_pkix1_explicit_93 271
+#define OBJ_id_pkix1_explicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 3L
+
+#define SN_id_pkix1_implicit_93 "id-pkix1-implicit-93"
+#define NID_id_pkix1_implicit_93 272
+#define OBJ_id_pkix1_implicit_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 4L
+
+#define SN_id_mod_crmf "id-mod-crmf"
+#define NID_id_mod_crmf 273
+#define OBJ_id_mod_crmf 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 5L
+
+#define SN_id_mod_cmc "id-mod-cmc"
+#define NID_id_mod_cmc 274
+#define OBJ_id_mod_cmc 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 6L
+
+#define SN_id_mod_kea_profile_88 "id-mod-kea-profile-88"
+#define NID_id_mod_kea_profile_88 275
+#define OBJ_id_mod_kea_profile_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 7L
+
+#define SN_id_mod_kea_profile_93 "id-mod-kea-profile-93"
+#define NID_id_mod_kea_profile_93 276
+#define OBJ_id_mod_kea_profile_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 8L
+
+#define SN_id_mod_cmp "id-mod-cmp"
+#define NID_id_mod_cmp 277
+#define OBJ_id_mod_cmp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 9L
+
+#define SN_id_mod_qualified_cert_88 "id-mod-qualified-cert-88"
+#define NID_id_mod_qualified_cert_88 278
+#define OBJ_id_mod_qualified_cert_88 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 10L
+
+#define SN_id_mod_qualified_cert_93 "id-mod-qualified-cert-93"
+#define NID_id_mod_qualified_cert_93 279
+#define OBJ_id_mod_qualified_cert_93 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 11L
+
+#define SN_id_mod_attribute_cert "id-mod-attribute-cert"
+#define NID_id_mod_attribute_cert 280
+#define OBJ_id_mod_attribute_cert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 12L
+
+#define SN_id_mod_timestamp_protocol "id-mod-timestamp-protocol"
+#define NID_id_mod_timestamp_protocol 281
+#define OBJ_id_mod_timestamp_protocol 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 13L
+
+#define SN_id_mod_ocsp "id-mod-ocsp"
+#define NID_id_mod_ocsp 282
+#define OBJ_id_mod_ocsp 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 14L
+
+#define SN_id_mod_dvcs "id-mod-dvcs"
+#define NID_id_mod_dvcs 283
+#define OBJ_id_mod_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 15L
+
+#define SN_id_mod_cmp2000 "id-mod-cmp2000"
+#define NID_id_mod_cmp2000 284
+#define OBJ_id_mod_cmp2000 1L, 3L, 6L, 1L, 5L, 5L, 7L, 0L, 16L
+
+#define SN_biometricInfo "biometricInfo"
+#define LN_biometricInfo "Biometric Info"
+#define NID_biometricInfo 285
+#define OBJ_biometricInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 2L
+
+#define SN_qcStatements "qcStatements"
+#define NID_qcStatements 286
+#define OBJ_qcStatements 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 3L
+
+#define SN_ac_auditEntity "ac-auditEntity"
+#define NID_ac_auditEntity 287
+#define OBJ_ac_auditEntity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 4L
+
+#define SN_ac_targeting "ac-targeting"
+#define NID_ac_targeting 288
+#define OBJ_ac_targeting 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 5L
+
+#define SN_aaControls "aaControls"
+#define NID_aaControls 289
+#define OBJ_aaControls 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 6L
+
+#define SN_sbgp_ipAddrBlock "sbgp-ipAddrBlock"
+#define NID_sbgp_ipAddrBlock 290
+#define OBJ_sbgp_ipAddrBlock 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 7L
+
+#define SN_sbgp_autonomousSysNum "sbgp-autonomousSysNum"
+#define NID_sbgp_autonomousSysNum 291
+#define OBJ_sbgp_autonomousSysNum 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 8L
+
+#define SN_sbgp_routerIdentifier "sbgp-routerIdentifier"
+#define NID_sbgp_routerIdentifier 292
+#define OBJ_sbgp_routerIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 9L
+
+#define SN_textNotice "textNotice"
+#define NID_textNotice 293
+#define OBJ_textNotice 1L, 3L, 6L, 1L, 5L, 5L, 7L, 2L, 3L
+
+#define SN_ipsecEndSystem "ipsecEndSystem"
+#define LN_ipsecEndSystem "IPSec End System"
+#define NID_ipsecEndSystem 294
+#define OBJ_ipsecEndSystem 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 5L
+
+#define SN_ipsecTunnel "ipsecTunnel"
+#define LN_ipsecTunnel "IPSec Tunnel"
+#define NID_ipsecTunnel 295
+#define OBJ_ipsecTunnel 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 6L
+
+#define SN_ipsecUser "ipsecUser"
+#define LN_ipsecUser "IPSec User"
+#define NID_ipsecUser 296
+#define OBJ_ipsecUser 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 7L
+
+#define SN_dvcs "DVCS"
+#define LN_dvcs "dvcs"
+#define NID_dvcs 297
+#define OBJ_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 3L, 10L
+
+#define SN_id_it_caProtEncCert "id-it-caProtEncCert"
+#define NID_id_it_caProtEncCert 298
+#define OBJ_id_it_caProtEncCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 1L
+
+#define SN_id_it_signKeyPairTypes "id-it-signKeyPairTypes"
+#define NID_id_it_signKeyPairTypes 299
+#define OBJ_id_it_signKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 2L
+
+#define SN_id_it_encKeyPairTypes "id-it-encKeyPairTypes"
+#define NID_id_it_encKeyPairTypes 300
+#define OBJ_id_it_encKeyPairTypes 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 3L
+
+#define SN_id_it_preferredSymmAlg "id-it-preferredSymmAlg"
+#define NID_id_it_preferredSymmAlg 301
+#define OBJ_id_it_preferredSymmAlg 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 4L
+
+#define SN_id_it_caKeyUpdateInfo "id-it-caKeyUpdateInfo"
+#define NID_id_it_caKeyUpdateInfo 302
+#define OBJ_id_it_caKeyUpdateInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 5L
+
+#define SN_id_it_currentCRL "id-it-currentCRL"
+#define NID_id_it_currentCRL 303
+#define OBJ_id_it_currentCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 6L
+
+#define SN_id_it_unsupportedOIDs "id-it-unsupportedOIDs"
+#define NID_id_it_unsupportedOIDs 304
+#define OBJ_id_it_unsupportedOIDs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 7L
+
+#define SN_id_it_subscriptionRequest "id-it-subscriptionRequest"
+#define NID_id_it_subscriptionRequest 305
+#define OBJ_id_it_subscriptionRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 8L
+
+#define SN_id_it_subscriptionResponse "id-it-subscriptionResponse"
+#define NID_id_it_subscriptionResponse 306
+#define OBJ_id_it_subscriptionResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 9L
+
+#define SN_id_it_keyPairParamReq "id-it-keyPairParamReq"
+#define NID_id_it_keyPairParamReq 307
+#define OBJ_id_it_keyPairParamReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 10L
+
+#define SN_id_it_keyPairParamRep "id-it-keyPairParamRep"
+#define NID_id_it_keyPairParamRep 308
+#define OBJ_id_it_keyPairParamRep 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 11L
+
+#define SN_id_it_revPassphrase "id-it-revPassphrase"
+#define NID_id_it_revPassphrase 309
+#define OBJ_id_it_revPassphrase 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 12L
+
+#define SN_id_it_implicitConfirm "id-it-implicitConfirm"
+#define NID_id_it_implicitConfirm 310
+#define OBJ_id_it_implicitConfirm 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 13L
+
+#define SN_id_it_confirmWaitTime "id-it-confirmWaitTime"
+#define NID_id_it_confirmWaitTime 311
+#define OBJ_id_it_confirmWaitTime 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 14L
+
+#define SN_id_it_origPKIMessage "id-it-origPKIMessage"
+#define NID_id_it_origPKIMessage 312
+#define OBJ_id_it_origPKIMessage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 15L
+
+#define SN_id_regCtrl "id-regCtrl"
+#define NID_id_regCtrl 313
+#define OBJ_id_regCtrl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L
+
+#define SN_id_regInfo "id-regInfo"
+#define NID_id_regInfo 314
+#define OBJ_id_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L
+
+#define SN_id_regCtrl_regToken "id-regCtrl-regToken"
+#define NID_id_regCtrl_regToken 315
+#define OBJ_id_regCtrl_regToken 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 1L
+
+#define SN_id_regCtrl_authenticator "id-regCtrl-authenticator"
+#define NID_id_regCtrl_authenticator 316
+#define OBJ_id_regCtrl_authenticator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 2L
+
+#define SN_id_regCtrl_pkiPublicationInfo "id-regCtrl-pkiPublicationInfo"
+#define NID_id_regCtrl_pkiPublicationInfo 317
+#define OBJ_id_regCtrl_pkiPublicationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 3L
+
+#define SN_id_regCtrl_pkiArchiveOptions "id-regCtrl-pkiArchiveOptions"
+#define NID_id_regCtrl_pkiArchiveOptions 318
+#define OBJ_id_regCtrl_pkiArchiveOptions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 4L
+
+#define SN_id_regCtrl_oldCertID "id-regCtrl-oldCertID"
+#define NID_id_regCtrl_oldCertID 319
+#define OBJ_id_regCtrl_oldCertID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 5L
+
+#define SN_id_regCtrl_protocolEncrKey "id-regCtrl-protocolEncrKey"
+#define NID_id_regCtrl_protocolEncrKey 320
+#define OBJ_id_regCtrl_protocolEncrKey 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 1L, 6L
+
+#define SN_id_regInfo_utf8Pairs "id-regInfo-utf8Pairs"
+#define NID_id_regInfo_utf8Pairs 321
+#define OBJ_id_regInfo_utf8Pairs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 1L
+
+#define SN_id_regInfo_certReq "id-regInfo-certReq"
+#define NID_id_regInfo_certReq 322
+#define OBJ_id_regInfo_certReq 1L, 3L, 6L, 1L, 5L, 5L, 7L, 5L, 2L, 2L
+
+#define SN_id_alg_des40 "id-alg-des40"
+#define NID_id_alg_des40 323
+#define OBJ_id_alg_des40 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 1L
+
+#define SN_id_alg_noSignature "id-alg-noSignature"
+#define NID_id_alg_noSignature 324
+#define OBJ_id_alg_noSignature 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 2L
+
+#define SN_id_alg_dh_sig_hmac_sha1 "id-alg-dh-sig-hmac-sha1"
+#define NID_id_alg_dh_sig_hmac_sha1 325
+#define OBJ_id_alg_dh_sig_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 3L
+
+#define SN_id_alg_dh_pop "id-alg-dh-pop"
+#define NID_id_alg_dh_pop 326
+#define OBJ_id_alg_dh_pop 1L, 3L, 6L, 1L, 5L, 5L, 7L, 6L, 4L
+
+#define SN_id_cmc_statusInfo "id-cmc-statusInfo"
+#define NID_id_cmc_statusInfo 327
+#define OBJ_id_cmc_statusInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 1L
+
+#define SN_id_cmc_identification "id-cmc-identification"
+#define NID_id_cmc_identification 328
+#define OBJ_id_cmc_identification 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 2L
+
+#define SN_id_cmc_identityProof "id-cmc-identityProof"
+#define NID_id_cmc_identityProof 329
+#define OBJ_id_cmc_identityProof 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 3L
+
+#define SN_id_cmc_dataReturn "id-cmc-dataReturn"
+#define NID_id_cmc_dataReturn 330
+#define OBJ_id_cmc_dataReturn 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 4L
+
+#define SN_id_cmc_transactionId "id-cmc-transactionId"
+#define NID_id_cmc_transactionId 331
+#define OBJ_id_cmc_transactionId 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 5L
+
+#define SN_id_cmc_senderNonce "id-cmc-senderNonce"
+#define NID_id_cmc_senderNonce 332
+#define OBJ_id_cmc_senderNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 6L
+
+#define SN_id_cmc_recipientNonce "id-cmc-recipientNonce"
+#define NID_id_cmc_recipientNonce 333
+#define OBJ_id_cmc_recipientNonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 7L
+
+#define SN_id_cmc_addExtensions "id-cmc-addExtensions"
+#define NID_id_cmc_addExtensions 334
+#define OBJ_id_cmc_addExtensions 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 8L
+
+#define SN_id_cmc_encryptedPOP "id-cmc-encryptedPOP"
+#define NID_id_cmc_encryptedPOP 335
+#define OBJ_id_cmc_encryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 9L
+
+#define SN_id_cmc_decryptedPOP "id-cmc-decryptedPOP"
+#define NID_id_cmc_decryptedPOP 336
+#define OBJ_id_cmc_decryptedPOP 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 10L
+
+#define SN_id_cmc_lraPOPWitness "id-cmc-lraPOPWitness"
+#define NID_id_cmc_lraPOPWitness 337
+#define OBJ_id_cmc_lraPOPWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 11L
+
+#define SN_id_cmc_getCert "id-cmc-getCert"
+#define NID_id_cmc_getCert 338
+#define OBJ_id_cmc_getCert 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 15L
+
+#define SN_id_cmc_getCRL "id-cmc-getCRL"
+#define NID_id_cmc_getCRL 339
+#define OBJ_id_cmc_getCRL 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 16L
+
+#define SN_id_cmc_revokeRequest "id-cmc-revokeRequest"
+#define NID_id_cmc_revokeRequest 340
+#define OBJ_id_cmc_revokeRequest 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 17L
+
+#define SN_id_cmc_regInfo "id-cmc-regInfo"
+#define NID_id_cmc_regInfo 341
+#define OBJ_id_cmc_regInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 18L
+
+#define SN_id_cmc_responseInfo "id-cmc-responseInfo"
+#define NID_id_cmc_responseInfo 342
+#define OBJ_id_cmc_responseInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 19L
+
+#define SN_id_cmc_queryPending "id-cmc-queryPending"
+#define NID_id_cmc_queryPending 343
+#define OBJ_id_cmc_queryPending 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 21L
+
+#define SN_id_cmc_popLinkRandom "id-cmc-popLinkRandom"
+#define NID_id_cmc_popLinkRandom 344
+#define OBJ_id_cmc_popLinkRandom 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 22L
+
+#define SN_id_cmc_popLinkWitness "id-cmc-popLinkWitness"
+#define NID_id_cmc_popLinkWitness 345
+#define OBJ_id_cmc_popLinkWitness 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 23L
+
+#define SN_id_cmc_confirmCertAcceptance "id-cmc-confirmCertAcceptance"
+#define NID_id_cmc_confirmCertAcceptance 346
+#define OBJ_id_cmc_confirmCertAcceptance 1L, 3L, 6L, 1L, 5L, 5L, 7L, 7L, 24L
+
+#define SN_id_on_personalData "id-on-personalData"
+#define NID_id_on_personalData 347
+#define OBJ_id_on_personalData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 1L
+
+#define SN_id_pda_dateOfBirth "id-pda-dateOfBirth"
+#define NID_id_pda_dateOfBirth 348
+#define OBJ_id_pda_dateOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 1L
+
+#define SN_id_pda_placeOfBirth "id-pda-placeOfBirth"
+#define NID_id_pda_placeOfBirth 349
+#define OBJ_id_pda_placeOfBirth 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 2L
+
+#define SN_id_pda_gender "id-pda-gender"
+#define NID_id_pda_gender 351
+#define OBJ_id_pda_gender 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 3L
+
+#define SN_id_pda_countryOfCitizenship "id-pda-countryOfCitizenship"
+#define NID_id_pda_countryOfCitizenship 352
+#define OBJ_id_pda_countryOfCitizenship 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 4L
+
+#define SN_id_pda_countryOfResidence "id-pda-countryOfResidence"
+#define NID_id_pda_countryOfResidence 353
+#define OBJ_id_pda_countryOfResidence 1L, 3L, 6L, 1L, 5L, 5L, 7L, 9L, 5L
+
+#define SN_id_aca_authenticationInfo "id-aca-authenticationInfo"
+#define NID_id_aca_authenticationInfo 354
+#define OBJ_id_aca_authenticationInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 1L
+
+#define SN_id_aca_accessIdentity "id-aca-accessIdentity"
+#define NID_id_aca_accessIdentity 355
+#define OBJ_id_aca_accessIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 2L
+
+#define SN_id_aca_chargingIdentity "id-aca-chargingIdentity"
+#define NID_id_aca_chargingIdentity 356
+#define OBJ_id_aca_chargingIdentity 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 3L
+
+#define SN_id_aca_group "id-aca-group"
+#define NID_id_aca_group 357
+#define OBJ_id_aca_group 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 4L
+
+#define SN_id_aca_role "id-aca-role"
+#define NID_id_aca_role 358
+#define OBJ_id_aca_role 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 5L
+
+#define SN_id_qcs_pkixQCSyntax_v1 "id-qcs-pkixQCSyntax-v1"
+#define NID_id_qcs_pkixQCSyntax_v1 359
+#define OBJ_id_qcs_pkixQCSyntax_v1 1L, 3L, 6L, 1L, 5L, 5L, 7L, 11L, 1L
+
+#define SN_id_cct_crs "id-cct-crs"
+#define NID_id_cct_crs 360
+#define OBJ_id_cct_crs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 1L
+
+#define SN_id_cct_PKIData "id-cct-PKIData"
+#define NID_id_cct_PKIData 361
+#define OBJ_id_cct_PKIData 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 2L
+
+#define SN_id_cct_PKIResponse "id-cct-PKIResponse"
+#define NID_id_cct_PKIResponse 362
+#define OBJ_id_cct_PKIResponse 1L, 3L, 6L, 1L, 5L, 5L, 7L, 12L, 3L
+
+#define SN_ad_timeStamping "ad_timestamping"
+#define LN_ad_timeStamping "AD Time Stamping"
+#define NID_ad_timeStamping 363
+#define OBJ_ad_timeStamping 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 3L
+
+#define SN_ad_dvcs "AD_DVCS"
+#define LN_ad_dvcs "ad dvcs"
+#define NID_ad_dvcs 364
+#define OBJ_ad_dvcs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 4L
+
+#define SN_id_pkix_OCSP_basic "basicOCSPResponse"
+#define LN_id_pkix_OCSP_basic "Basic OCSP Response"
+#define NID_id_pkix_OCSP_basic 365
+#define OBJ_id_pkix_OCSP_basic 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 1L
+
+#define SN_id_pkix_OCSP_Nonce "Nonce"
+#define LN_id_pkix_OCSP_Nonce "OCSP Nonce"
+#define NID_id_pkix_OCSP_Nonce 366
+#define OBJ_id_pkix_OCSP_Nonce 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 2L
+
+#define SN_id_pkix_OCSP_CrlID "CrlID"
+#define LN_id_pkix_OCSP_CrlID "OCSP CRL ID"
+#define NID_id_pkix_OCSP_CrlID 367
+#define OBJ_id_pkix_OCSP_CrlID 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 3L
+
+#define SN_id_pkix_OCSP_acceptableResponses "acceptableResponses"
+#define LN_id_pkix_OCSP_acceptableResponses "Acceptable OCSP Responses"
+#define NID_id_pkix_OCSP_acceptableResponses 368
+#define OBJ_id_pkix_OCSP_acceptableResponses \
+  1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 4L
+
+#define SN_id_pkix_OCSP_noCheck "noCheck"
+#define LN_id_pkix_OCSP_noCheck "OCSP No Check"
+#define NID_id_pkix_OCSP_noCheck 369
+#define OBJ_id_pkix_OCSP_noCheck 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 5L
+
+#define SN_id_pkix_OCSP_archiveCutoff "archiveCutoff"
+#define LN_id_pkix_OCSP_archiveCutoff "OCSP Archive Cutoff"
+#define NID_id_pkix_OCSP_archiveCutoff 370
+#define OBJ_id_pkix_OCSP_archiveCutoff 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 6L
+
+#define SN_id_pkix_OCSP_serviceLocator "serviceLocator"
+#define LN_id_pkix_OCSP_serviceLocator "OCSP Service Locator"
+#define NID_id_pkix_OCSP_serviceLocator 371
+#define OBJ_id_pkix_OCSP_serviceLocator 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 7L
+
+#define SN_id_pkix_OCSP_extendedStatus "extendedStatus"
+#define LN_id_pkix_OCSP_extendedStatus "Extended OCSP Status"
+#define NID_id_pkix_OCSP_extendedStatus 372
+#define OBJ_id_pkix_OCSP_extendedStatus 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 8L
+
+#define SN_id_pkix_OCSP_valid "valid"
+#define NID_id_pkix_OCSP_valid 373
+#define OBJ_id_pkix_OCSP_valid 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 9L
+
+#define SN_id_pkix_OCSP_path "path"
+#define NID_id_pkix_OCSP_path 374
+#define OBJ_id_pkix_OCSP_path 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 10L
+
+#define SN_id_pkix_OCSP_trustRoot "trustRoot"
+#define LN_id_pkix_OCSP_trustRoot "Trust Root"
+#define NID_id_pkix_OCSP_trustRoot 375
+#define OBJ_id_pkix_OCSP_trustRoot 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 1L, 11L
+
+#define SN_algorithm "algorithm"
+#define LN_algorithm "algorithm"
+#define NID_algorithm 376
+#define OBJ_algorithm 1L, 3L, 14L, 3L, 2L
+
+#define SN_rsaSignature "rsaSignature"
+#define NID_rsaSignature 377
+#define OBJ_rsaSignature 1L, 3L, 14L, 3L, 2L, 11L
+
+#define SN_X500algorithms "X500algorithms"
+#define LN_X500algorithms "directory services - algorithms"
+#define NID_X500algorithms 378
+#define OBJ_X500algorithms 2L, 5L, 8L
+
+#define SN_org "ORG"
+#define LN_org "org"
+#define NID_org 379
+#define OBJ_org 1L, 3L
+
+#define SN_dod "DOD"
+#define LN_dod "dod"
+#define NID_dod 380
+#define OBJ_dod 1L, 3L, 6L
+
+#define SN_iana "IANA"
+#define LN_iana "iana"
+#define NID_iana 381
+#define OBJ_iana 1L, 3L, 6L, 1L
+
+#define SN_Directory "directory"
+#define LN_Directory "Directory"
+#define NID_Directory 382
+#define OBJ_Directory 1L, 3L, 6L, 1L, 1L
+
+#define SN_Management "mgmt"
+#define LN_Management "Management"
+#define NID_Management 383
+#define OBJ_Management 1L, 3L, 6L, 1L, 2L
+
+#define SN_Experimental "experimental"
+#define LN_Experimental "Experimental"
+#define NID_Experimental 384
+#define OBJ_Experimental 1L, 3L, 6L, 1L, 3L
+
+#define SN_Private "private"
+#define LN_Private "Private"
+#define NID_Private 385
+#define OBJ_Private 1L, 3L, 6L, 1L, 4L
+
+#define SN_Security "security"
+#define LN_Security "Security"
+#define NID_Security 386
+#define OBJ_Security 1L, 3L, 6L, 1L, 5L
+
+#define SN_SNMPv2 "snmpv2"
+#define LN_SNMPv2 "SNMPv2"
+#define NID_SNMPv2 387
+#define OBJ_SNMPv2 1L, 3L, 6L, 1L, 6L
+
+#define LN_Mail "Mail"
+#define NID_Mail 388
+#define OBJ_Mail 1L, 3L, 6L, 1L, 7L
+
+#define SN_Enterprises "enterprises"
+#define LN_Enterprises "Enterprises"
+#define NID_Enterprises 389
+#define OBJ_Enterprises 1L, 3L, 6L, 1L, 4L, 1L
+
+#define SN_dcObject "dcobject"
+#define LN_dcObject "dcObject"
+#define NID_dcObject 390
+#define OBJ_dcObject 1L, 3L, 6L, 1L, 4L, 1L, 1466L, 344L
+
+#define SN_domainComponent "DC"
+#define LN_domainComponent "domainComponent"
+#define NID_domainComponent 391
+#define OBJ_domainComponent 0L, 9L, 2342L, 19200300L, 100L, 1L, 25L
+
+#define SN_Domain "domain"
+#define LN_Domain "Domain"
+#define NID_Domain 392
+#define OBJ_Domain 0L, 9L, 2342L, 19200300L, 100L, 4L, 13L
+
+#define SN_selected_attribute_types "selected-attribute-types"
+#define LN_selected_attribute_types "Selected Attribute Types"
+#define NID_selected_attribute_types 394
+#define OBJ_selected_attribute_types 2L, 5L, 1L, 5L
+
+#define SN_clearance "clearance"
+#define NID_clearance 395
+#define OBJ_clearance 2L, 5L, 1L, 5L, 55L
+
+#define SN_md4WithRSAEncryption "RSA-MD4"
+#define LN_md4WithRSAEncryption "md4WithRSAEncryption"
+#define NID_md4WithRSAEncryption 396
+#define OBJ_md4WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 3L
+
+#define SN_ac_proxying "ac-proxying"
+#define NID_ac_proxying 397
+#define OBJ_ac_proxying 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 10L
+
+#define SN_sinfo_access "subjectInfoAccess"
+#define LN_sinfo_access "Subject Information Access"
+#define NID_sinfo_access 398
+#define OBJ_sinfo_access 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 11L
+
+#define SN_id_aca_encAttrs "id-aca-encAttrs"
+#define NID_id_aca_encAttrs 399
+#define OBJ_id_aca_encAttrs 1L, 3L, 6L, 1L, 5L, 5L, 7L, 10L, 6L
+
+#define SN_role "role"
+#define LN_role "role"
+#define NID_role 400
+#define OBJ_role 2L, 5L, 4L, 72L
+
+#define SN_policy_constraints "policyConstraints"
+#define LN_policy_constraints "X509v3 Policy Constraints"
+#define NID_policy_constraints 401
+#define OBJ_policy_constraints 2L, 5L, 29L, 36L
+
+#define SN_target_information "targetInformation"
+#define LN_target_information "X509v3 AC Targeting"
+#define NID_target_information 402
+#define OBJ_target_information 2L, 5L, 29L, 55L
+
+#define SN_no_rev_avail "noRevAvail"
+#define LN_no_rev_avail "X509v3 No Revocation Available"
+#define NID_no_rev_avail 403
+#define OBJ_no_rev_avail 2L, 5L, 29L, 56L
+
+#define SN_ansi_X9_62 "ansi-X9-62"
+#define LN_ansi_X9_62 "ANSI X9.62"
+#define NID_ansi_X9_62 405
+#define OBJ_ansi_X9_62 1L, 2L, 840L, 10045L
+
+#define SN_X9_62_prime_field "prime-field"
+#define NID_X9_62_prime_field 406
+#define OBJ_X9_62_prime_field 1L, 2L, 840L, 10045L, 1L, 1L
+
+#define SN_X9_62_characteristic_two_field "characteristic-two-field"
+#define NID_X9_62_characteristic_two_field 407
+#define OBJ_X9_62_characteristic_two_field 1L, 2L, 840L, 10045L, 1L, 2L
+
+#define SN_X9_62_id_ecPublicKey "id-ecPublicKey"
+#define NID_X9_62_id_ecPublicKey 408
+#define OBJ_X9_62_id_ecPublicKey 1L, 2L, 840L, 10045L, 2L, 1L
+
+#define SN_X9_62_prime192v1 "prime192v1"
+#define NID_X9_62_prime192v1 409
+#define OBJ_X9_62_prime192v1 1L, 2L, 840L, 10045L, 3L, 1L, 1L
+
+#define SN_X9_62_prime192v2 "prime192v2"
+#define NID_X9_62_prime192v2 410
+#define OBJ_X9_62_prime192v2 1L, 2L, 840L, 10045L, 3L, 1L, 2L
+
+#define SN_X9_62_prime192v3 "prime192v3"
+#define NID_X9_62_prime192v3 411
+#define OBJ_X9_62_prime192v3 1L, 2L, 840L, 10045L, 3L, 1L, 3L
+
+#define SN_X9_62_prime239v1 "prime239v1"
+#define NID_X9_62_prime239v1 412
+#define OBJ_X9_62_prime239v1 1L, 2L, 840L, 10045L, 3L, 1L, 4L
+
+#define SN_X9_62_prime239v2 "prime239v2"
+#define NID_X9_62_prime239v2 413
+#define OBJ_X9_62_prime239v2 1L, 2L, 840L, 10045L, 3L, 1L, 5L
+
+#define SN_X9_62_prime239v3 "prime239v3"
+#define NID_X9_62_prime239v3 414
+#define OBJ_X9_62_prime239v3 1L, 2L, 840L, 10045L, 3L, 1L, 6L
+
+#define SN_X9_62_prime256v1 "prime256v1"
+#define NID_X9_62_prime256v1 415
+#define OBJ_X9_62_prime256v1 1L, 2L, 840L, 10045L, 3L, 1L, 7L
+
+#define SN_ecdsa_with_SHA1 "ecdsa-with-SHA1"
+#define NID_ecdsa_with_SHA1 416
+#define OBJ_ecdsa_with_SHA1 1L, 2L, 840L, 10045L, 4L, 1L
+
+#define SN_ms_csp_name "CSPName"
+#define LN_ms_csp_name "Microsoft CSP Name"
+#define NID_ms_csp_name 417
+#define OBJ_ms_csp_name 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 1L
+
+#define SN_aes_128_ecb "AES-128-ECB"
+#define LN_aes_128_ecb "aes-128-ecb"
+#define NID_aes_128_ecb 418
+#define OBJ_aes_128_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 1L
+
+#define SN_aes_128_cbc "AES-128-CBC"
+#define LN_aes_128_cbc "aes-128-cbc"
+#define NID_aes_128_cbc 419
+#define OBJ_aes_128_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 2L
+
+#define SN_aes_128_ofb128 "AES-128-OFB"
+#define LN_aes_128_ofb128 "aes-128-ofb"
+#define NID_aes_128_ofb128 420
+#define OBJ_aes_128_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 3L
+
+#define SN_aes_128_cfb128 "AES-128-CFB"
+#define LN_aes_128_cfb128 "aes-128-cfb"
+#define NID_aes_128_cfb128 421
+#define OBJ_aes_128_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 4L
+
+#define SN_aes_192_ecb "AES-192-ECB"
+#define LN_aes_192_ecb "aes-192-ecb"
+#define NID_aes_192_ecb 422
+#define OBJ_aes_192_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 21L
+
+#define SN_aes_192_cbc "AES-192-CBC"
+#define LN_aes_192_cbc "aes-192-cbc"
+#define NID_aes_192_cbc 423
+#define OBJ_aes_192_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 22L
+
+#define SN_aes_192_ofb128 "AES-192-OFB"
+#define LN_aes_192_ofb128 "aes-192-ofb"
+#define NID_aes_192_ofb128 424
+#define OBJ_aes_192_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 23L
+
+#define SN_aes_192_cfb128 "AES-192-CFB"
+#define LN_aes_192_cfb128 "aes-192-cfb"
+#define NID_aes_192_cfb128 425
+#define OBJ_aes_192_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 24L
+
+#define SN_aes_256_ecb "AES-256-ECB"
+#define LN_aes_256_ecb "aes-256-ecb"
+#define NID_aes_256_ecb 426
+#define OBJ_aes_256_ecb 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 41L
+
+#define SN_aes_256_cbc "AES-256-CBC"
+#define LN_aes_256_cbc "aes-256-cbc"
+#define NID_aes_256_cbc 427
+#define OBJ_aes_256_cbc 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 42L
+
+#define SN_aes_256_ofb128 "AES-256-OFB"
+#define LN_aes_256_ofb128 "aes-256-ofb"
+#define NID_aes_256_ofb128 428
+#define OBJ_aes_256_ofb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 43L
+
+#define SN_aes_256_cfb128 "AES-256-CFB"
+#define LN_aes_256_cfb128 "aes-256-cfb"
+#define NID_aes_256_cfb128 429
+#define OBJ_aes_256_cfb128 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 44L
+
+#define SN_hold_instruction_code "holdInstructionCode"
+#define LN_hold_instruction_code "Hold Instruction Code"
+#define NID_hold_instruction_code 430
+#define OBJ_hold_instruction_code 2L, 5L, 29L, 23L
+
+#define SN_hold_instruction_none "holdInstructionNone"
+#define LN_hold_instruction_none "Hold Instruction None"
+#define NID_hold_instruction_none 431
+#define OBJ_hold_instruction_none 1L, 2L, 840L, 10040L, 2L, 1L
+
+#define SN_hold_instruction_call_issuer "holdInstructionCallIssuer"
+#define LN_hold_instruction_call_issuer "Hold Instruction Call Issuer"
+#define NID_hold_instruction_call_issuer 432
+#define OBJ_hold_instruction_call_issuer 1L, 2L, 840L, 10040L, 2L, 2L
+
+#define SN_hold_instruction_reject "holdInstructionReject"
+#define LN_hold_instruction_reject "Hold Instruction Reject"
+#define NID_hold_instruction_reject 433
+#define OBJ_hold_instruction_reject 1L, 2L, 840L, 10040L, 2L, 3L
+
+#define SN_data "data"
+#define NID_data 434
+#define OBJ_data 0L, 9L
+
+#define SN_pss "pss"
+#define NID_pss 435
+#define OBJ_pss 0L, 9L, 2342L
+
+#define SN_ucl "ucl"
+#define NID_ucl 436
+#define OBJ_ucl 0L, 9L, 2342L, 19200300L
+
+#define SN_pilot "pilot"
+#define NID_pilot 437
+#define OBJ_pilot 0L, 9L, 2342L, 19200300L, 100L
+
+#define LN_pilotAttributeType "pilotAttributeType"
+#define NID_pilotAttributeType 438
+#define OBJ_pilotAttributeType 0L, 9L, 2342L, 19200300L, 100L, 1L
+
+#define LN_pilotAttributeSyntax "pilotAttributeSyntax"
+#define NID_pilotAttributeSyntax 439
+#define OBJ_pilotAttributeSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L
+
+#define LN_pilotObjectClass "pilotObjectClass"
+#define NID_pilotObjectClass 440
+#define OBJ_pilotObjectClass 0L, 9L, 2342L, 19200300L, 100L, 4L
+
+#define LN_pilotGroups "pilotGroups"
+#define NID_pilotGroups 441
+#define OBJ_pilotGroups 0L, 9L, 2342L, 19200300L, 100L, 10L
+
+#define LN_iA5StringSyntax "iA5StringSyntax"
+#define NID_iA5StringSyntax 442
+#define OBJ_iA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 4L
+
+#define LN_caseIgnoreIA5StringSyntax "caseIgnoreIA5StringSyntax"
+#define NID_caseIgnoreIA5StringSyntax 443
+#define OBJ_caseIgnoreIA5StringSyntax 0L, 9L, 2342L, 19200300L, 100L, 3L, 5L
+
+#define LN_pilotObject "pilotObject"
+#define NID_pilotObject 444
+#define OBJ_pilotObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 3L
+
+#define LN_pilotPerson "pilotPerson"
+#define NID_pilotPerson 445
+#define OBJ_pilotPerson 0L, 9L, 2342L, 19200300L, 100L, 4L, 4L
+
+#define SN_account "account"
+#define NID_account 446
+#define OBJ_account 0L, 9L, 2342L, 19200300L, 100L, 4L, 5L
+
+#define SN_document "document"
+#define NID_document 447
+#define OBJ_document 0L, 9L, 2342L, 19200300L, 100L, 4L, 6L
+
+#define SN_room "room"
+#define NID_room 448
+#define OBJ_room 0L, 9L, 2342L, 19200300L, 100L, 4L, 7L
+
+#define LN_documentSeries "documentSeries"
+#define NID_documentSeries 449
+#define OBJ_documentSeries 0L, 9L, 2342L, 19200300L, 100L, 4L, 9L
+
+#define LN_rFC822localPart "rFC822localPart"
+#define NID_rFC822localPart 450
+#define OBJ_rFC822localPart 0L, 9L, 2342L, 19200300L, 100L, 4L, 14L
+
+#define LN_dNSDomain "dNSDomain"
+#define NID_dNSDomain 451
+#define OBJ_dNSDomain 0L, 9L, 2342L, 19200300L, 100L, 4L, 15L
+
+#define LN_domainRelatedObject "domainRelatedObject"
+#define NID_domainRelatedObject 452
+#define OBJ_domainRelatedObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 17L
+
+#define LN_friendlyCountry "friendlyCountry"
+#define NID_friendlyCountry 453
+#define OBJ_friendlyCountry 0L, 9L, 2342L, 19200300L, 100L, 4L, 18L
+
+#define LN_simpleSecurityObject "simpleSecurityObject"
+#define NID_simpleSecurityObject 454
+#define OBJ_simpleSecurityObject 0L, 9L, 2342L, 19200300L, 100L, 4L, 19L
+
+#define LN_pilotOrganization "pilotOrganization"
+#define NID_pilotOrganization 455
+#define OBJ_pilotOrganization 0L, 9L, 2342L, 19200300L, 100L, 4L, 20L
+
+#define LN_pilotDSA "pilotDSA"
+#define NID_pilotDSA 456
+#define OBJ_pilotDSA 0L, 9L, 2342L, 19200300L, 100L, 4L, 21L
+
+#define LN_qualityLabelledData "qualityLabelledData"
+#define NID_qualityLabelledData 457
+#define OBJ_qualityLabelledData 0L, 9L, 2342L, 19200300L, 100L, 4L, 22L
+
+#define SN_userId "UID"
+#define LN_userId "userId"
+#define NID_userId 458
+#define OBJ_userId 0L, 9L, 2342L, 19200300L, 100L, 1L, 1L
+
+#define LN_textEncodedORAddress "textEncodedORAddress"
+#define NID_textEncodedORAddress 459
+#define OBJ_textEncodedORAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 2L
+
+#define SN_rfc822Mailbox "mail"
+#define LN_rfc822Mailbox "rfc822Mailbox"
+#define NID_rfc822Mailbox 460
+#define OBJ_rfc822Mailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 3L
+
+#define SN_info "info"
+#define NID_info 461
+#define OBJ_info 0L, 9L, 2342L, 19200300L, 100L, 1L, 4L
+
+#define LN_favouriteDrink "favouriteDrink"
+#define NID_favouriteDrink 462
+#define OBJ_favouriteDrink 0L, 9L, 2342L, 19200300L, 100L, 1L, 5L
+
+#define LN_roomNumber "roomNumber"
+#define NID_roomNumber 463
+#define OBJ_roomNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 6L
+
+#define SN_photo "photo"
+#define NID_photo 464
+#define OBJ_photo 0L, 9L, 2342L, 19200300L, 100L, 1L, 7L
+
+#define LN_userClass "userClass"
+#define NID_userClass 465
+#define OBJ_userClass 0L, 9L, 2342L, 19200300L, 100L, 1L, 8L
+
+#define SN_host "host"
+#define NID_host 466
+#define OBJ_host 0L, 9L, 2342L, 19200300L, 100L, 1L, 9L
+
+#define SN_manager "manager"
+#define NID_manager 467
+#define OBJ_manager 0L, 9L, 2342L, 19200300L, 100L, 1L, 10L
+
+#define LN_documentIdentifier "documentIdentifier"
+#define NID_documentIdentifier 468
+#define OBJ_documentIdentifier 0L, 9L, 2342L, 19200300L, 100L, 1L, 11L
+
+#define LN_documentTitle "documentTitle"
+#define NID_documentTitle 469
+#define OBJ_documentTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 12L
+
+#define LN_documentVersion "documentVersion"
+#define NID_documentVersion 470
+#define OBJ_documentVersion 0L, 9L, 2342L, 19200300L, 100L, 1L, 13L
+
+#define LN_documentAuthor "documentAuthor"
+#define NID_documentAuthor 471
+#define OBJ_documentAuthor 0L, 9L, 2342L, 19200300L, 100L, 1L, 14L
+
+#define LN_documentLocation "documentLocation"
+#define NID_documentLocation 472
+#define OBJ_documentLocation 0L, 9L, 2342L, 19200300L, 100L, 1L, 15L
+
+#define LN_homeTelephoneNumber "homeTelephoneNumber"
+#define NID_homeTelephoneNumber 473
+#define OBJ_homeTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 20L
+
+#define SN_secretary "secretary"
+#define NID_secretary 474
+#define OBJ_secretary 0L, 9L, 2342L, 19200300L, 100L, 1L, 21L
+
+#define LN_otherMailbox "otherMailbox"
+#define NID_otherMailbox 475
+#define OBJ_otherMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 22L
+
+#define LN_lastModifiedTime "lastModifiedTime"
+#define NID_lastModifiedTime 476
+#define OBJ_lastModifiedTime 0L, 9L, 2342L, 19200300L, 100L, 1L, 23L
+
+#define LN_lastModifiedBy "lastModifiedBy"
+#define NID_lastModifiedBy 477
+#define OBJ_lastModifiedBy 0L, 9L, 2342L, 19200300L, 100L, 1L, 24L
+
+#define LN_aRecord "aRecord"
+#define NID_aRecord 478
+#define OBJ_aRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 26L
+
+#define LN_pilotAttributeType27 "pilotAttributeType27"
+#define NID_pilotAttributeType27 479
+#define OBJ_pilotAttributeType27 0L, 9L, 2342L, 19200300L, 100L, 1L, 27L
+
+#define LN_mXRecord "mXRecord"
+#define NID_mXRecord 480
+#define OBJ_mXRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 28L
+
+#define LN_nSRecord "nSRecord"
+#define NID_nSRecord 481
+#define OBJ_nSRecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 29L
+
+#define LN_sOARecord "sOARecord"
+#define NID_sOARecord 482
+#define OBJ_sOARecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 30L
+
+#define LN_cNAMERecord "cNAMERecord"
+#define NID_cNAMERecord 483
+#define OBJ_cNAMERecord 0L, 9L, 2342L, 19200300L, 100L, 1L, 31L
+
+#define LN_associatedDomain "associatedDomain"
+#define NID_associatedDomain 484
+#define OBJ_associatedDomain 0L, 9L, 2342L, 19200300L, 100L, 1L, 37L
+
+#define LN_associatedName "associatedName"
+#define NID_associatedName 485
+#define OBJ_associatedName 0L, 9L, 2342L, 19200300L, 100L, 1L, 38L
+
+#define LN_homePostalAddress "homePostalAddress"
+#define NID_homePostalAddress 486
+#define OBJ_homePostalAddress 0L, 9L, 2342L, 19200300L, 100L, 1L, 39L
+
+#define LN_personalTitle "personalTitle"
+#define NID_personalTitle 487
+#define OBJ_personalTitle 0L, 9L, 2342L, 19200300L, 100L, 1L, 40L
+
+#define LN_mobileTelephoneNumber "mobileTelephoneNumber"
+#define NID_mobileTelephoneNumber 488
+#define OBJ_mobileTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 41L
+
+#define LN_pagerTelephoneNumber "pagerTelephoneNumber"
+#define NID_pagerTelephoneNumber 489
+#define OBJ_pagerTelephoneNumber 0L, 9L, 2342L, 19200300L, 100L, 1L, 42L
+
+#define LN_friendlyCountryName "friendlyCountryName"
+#define NID_friendlyCountryName 490
+#define OBJ_friendlyCountryName 0L, 9L, 2342L, 19200300L, 100L, 1L, 43L
+
+#define LN_organizationalStatus "organizationalStatus"
+#define NID_organizationalStatus 491
+#define OBJ_organizationalStatus 0L, 9L, 2342L, 19200300L, 100L, 1L, 45L
+
+#define LN_janetMailbox "janetMailbox"
+#define NID_janetMailbox 492
+#define OBJ_janetMailbox 0L, 9L, 2342L, 19200300L, 100L, 1L, 46L
+
+#define LN_mailPreferenceOption "mailPreferenceOption"
+#define NID_mailPreferenceOption 493
+#define OBJ_mailPreferenceOption 0L, 9L, 2342L, 19200300L, 100L, 1L, 47L
+
+#define LN_buildingName "buildingName"
+#define NID_buildingName 494
+#define OBJ_buildingName 0L, 9L, 2342L, 19200300L, 100L, 1L, 48L
+
+#define LN_dSAQuality "dSAQuality"
+#define NID_dSAQuality 495
+#define OBJ_dSAQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 49L
+
+#define LN_singleLevelQuality "singleLevelQuality"
+#define NID_singleLevelQuality 496
+#define OBJ_singleLevelQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 50L
+
+#define LN_subtreeMinimumQuality "subtreeMinimumQuality"
+#define NID_subtreeMinimumQuality 497
+#define OBJ_subtreeMinimumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 51L
+
+#define LN_subtreeMaximumQuality "subtreeMaximumQuality"
+#define NID_subtreeMaximumQuality 498
+#define OBJ_subtreeMaximumQuality 0L, 9L, 2342L, 19200300L, 100L, 1L, 52L
+
+#define LN_personalSignature "personalSignature"
+#define NID_personalSignature 499
+#define OBJ_personalSignature 0L, 9L, 2342L, 19200300L, 100L, 1L, 53L
+
+#define LN_dITRedirect "dITRedirect"
+#define NID_dITRedirect 500
+#define OBJ_dITRedirect 0L, 9L, 2342L, 19200300L, 100L, 1L, 54L
+
+#define SN_audio "audio"
+#define NID_audio 501
+#define OBJ_audio 0L, 9L, 2342L, 19200300L, 100L, 1L, 55L
+
+#define LN_documentPublisher "documentPublisher"
+#define NID_documentPublisher 502
+#define OBJ_documentPublisher 0L, 9L, 2342L, 19200300L, 100L, 1L, 56L
+
+#define LN_x500UniqueIdentifier "x500UniqueIdentifier"
+#define NID_x500UniqueIdentifier 503
+#define OBJ_x500UniqueIdentifier 2L, 5L, 4L, 45L
+
+#define SN_mime_mhs "mime-mhs"
+#define LN_mime_mhs "MIME MHS"
+#define NID_mime_mhs 504
+#define OBJ_mime_mhs 1L, 3L, 6L, 1L, 7L, 1L
+
+#define SN_mime_mhs_headings "mime-mhs-headings"
+#define LN_mime_mhs_headings "mime-mhs-headings"
+#define NID_mime_mhs_headings 505
+#define OBJ_mime_mhs_headings 1L, 3L, 6L, 1L, 7L, 1L, 1L
+
+#define SN_mime_mhs_bodies "mime-mhs-bodies"
+#define LN_mime_mhs_bodies "mime-mhs-bodies"
+#define NID_mime_mhs_bodies 506
+#define OBJ_mime_mhs_bodies 1L, 3L, 6L, 1L, 7L, 1L, 2L
+
+#define SN_id_hex_partial_message "id-hex-partial-message"
+#define LN_id_hex_partial_message "id-hex-partial-message"
+#define NID_id_hex_partial_message 507
+#define OBJ_id_hex_partial_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 1L
+
+#define SN_id_hex_multipart_message "id-hex-multipart-message"
+#define LN_id_hex_multipart_message "id-hex-multipart-message"
+#define NID_id_hex_multipart_message 508
+#define OBJ_id_hex_multipart_message 1L, 3L, 6L, 1L, 7L, 1L, 1L, 2L
+
+#define LN_generationQualifier "generationQualifier"
+#define NID_generationQualifier 509
+#define OBJ_generationQualifier 2L, 5L, 4L, 44L
+
+#define LN_pseudonym "pseudonym"
+#define NID_pseudonym 510
+#define OBJ_pseudonym 2L, 5L, 4L, 65L
+
+#define SN_id_set "id-set"
+#define LN_id_set "Secure Electronic Transactions"
+#define NID_id_set 512
+#define OBJ_id_set 2L, 23L, 42L
+
+#define SN_set_ctype "set-ctype"
+#define LN_set_ctype "content types"
+#define NID_set_ctype 513
+#define OBJ_set_ctype 2L, 23L, 42L, 0L
+
+#define SN_set_msgExt "set-msgExt"
+#define LN_set_msgExt "message extensions"
+#define NID_set_msgExt 514
+#define OBJ_set_msgExt 2L, 23L, 42L, 1L
+
+#define SN_set_attr "set-attr"
+#define NID_set_attr 515
+#define OBJ_set_attr 2L, 23L, 42L, 3L
+
+#define SN_set_policy "set-policy"
+#define NID_set_policy 516
+#define OBJ_set_policy 2L, 23L, 42L, 5L
+
+#define SN_set_certExt "set-certExt"
+#define LN_set_certExt "certificate extensions"
+#define NID_set_certExt 517
+#define OBJ_set_certExt 2L, 23L, 42L, 7L
+
+#define SN_set_brand "set-brand"
+#define NID_set_brand 518
+#define OBJ_set_brand 2L, 23L, 42L, 8L
+
+#define SN_setct_PANData "setct-PANData"
+#define NID_setct_PANData 519
+#define OBJ_setct_PANData 2L, 23L, 42L, 0L, 0L
+
+#define SN_setct_PANToken "setct-PANToken"
+#define NID_setct_PANToken 520
+#define OBJ_setct_PANToken 2L, 23L, 42L, 0L, 1L
+
+#define SN_setct_PANOnly "setct-PANOnly"
+#define NID_setct_PANOnly 521
+#define OBJ_setct_PANOnly 2L, 23L, 42L, 0L, 2L
+
+#define SN_setct_OIData "setct-OIData"
+#define NID_setct_OIData 522
+#define OBJ_setct_OIData 2L, 23L, 42L, 0L, 3L
+
+#define SN_setct_PI "setct-PI"
+#define NID_setct_PI 523
+#define OBJ_setct_PI 2L, 23L, 42L, 0L, 4L
+
+#define SN_setct_PIData "setct-PIData"
+#define NID_setct_PIData 524
+#define OBJ_setct_PIData 2L, 23L, 42L, 0L, 5L
+
+#define SN_setct_PIDataUnsigned "setct-PIDataUnsigned"
+#define NID_setct_PIDataUnsigned 525
+#define OBJ_setct_PIDataUnsigned 2L, 23L, 42L, 0L, 6L
+
+#define SN_setct_HODInput "setct-HODInput"
+#define NID_setct_HODInput 526
+#define OBJ_setct_HODInput 2L, 23L, 42L, 0L, 7L
+
+#define SN_setct_AuthResBaggage "setct-AuthResBaggage"
+#define NID_setct_AuthResBaggage 527
+#define OBJ_setct_AuthResBaggage 2L, 23L, 42L, 0L, 8L
+
+#define SN_setct_AuthRevReqBaggage "setct-AuthRevReqBaggage"
+#define NID_setct_AuthRevReqBaggage 528
+#define OBJ_setct_AuthRevReqBaggage 2L, 23L, 42L, 0L, 9L
+
+#define SN_setct_AuthRevResBaggage "setct-AuthRevResBaggage"
+#define NID_setct_AuthRevResBaggage 529
+#define OBJ_setct_AuthRevResBaggage 2L, 23L, 42L, 0L, 10L
+
+#define SN_setct_CapTokenSeq "setct-CapTokenSeq"
+#define NID_setct_CapTokenSeq 530
+#define OBJ_setct_CapTokenSeq 2L, 23L, 42L, 0L, 11L
+
+#define SN_setct_PInitResData "setct-PInitResData"
+#define NID_setct_PInitResData 531
+#define OBJ_setct_PInitResData 2L, 23L, 42L, 0L, 12L
+
+#define SN_setct_PI_TBS "setct-PI-TBS"
+#define NID_setct_PI_TBS 532
+#define OBJ_setct_PI_TBS 2L, 23L, 42L, 0L, 13L
+
+#define SN_setct_PResData "setct-PResData"
+#define NID_setct_PResData 533
+#define OBJ_setct_PResData 2L, 23L, 42L, 0L, 14L
+
+#define SN_setct_AuthReqTBS "setct-AuthReqTBS"
+#define NID_setct_AuthReqTBS 534
+#define OBJ_setct_AuthReqTBS 2L, 23L, 42L, 0L, 16L
+
+#define SN_setct_AuthResTBS "setct-AuthResTBS"
+#define NID_setct_AuthResTBS 535
+#define OBJ_setct_AuthResTBS 2L, 23L, 42L, 0L, 17L
+
+#define SN_setct_AuthResTBSX "setct-AuthResTBSX"
+#define NID_setct_AuthResTBSX 536
+#define OBJ_setct_AuthResTBSX 2L, 23L, 42L, 0L, 18L
+
+#define SN_setct_AuthTokenTBS "setct-AuthTokenTBS"
+#define NID_setct_AuthTokenTBS 537
+#define OBJ_setct_AuthTokenTBS 2L, 23L, 42L, 0L, 19L
+
+#define SN_setct_CapTokenData "setct-CapTokenData"
+#define NID_setct_CapTokenData 538
+#define OBJ_setct_CapTokenData 2L, 23L, 42L, 0L, 20L
+
+#define SN_setct_CapTokenTBS "setct-CapTokenTBS"
+#define NID_setct_CapTokenTBS 539
+#define OBJ_setct_CapTokenTBS 2L, 23L, 42L, 0L, 21L
+
+#define SN_setct_AcqCardCodeMsg "setct-AcqCardCodeMsg"
+#define NID_setct_AcqCardCodeMsg 540
+#define OBJ_setct_AcqCardCodeMsg 2L, 23L, 42L, 0L, 22L
+
+#define SN_setct_AuthRevReqTBS "setct-AuthRevReqTBS"
+#define NID_setct_AuthRevReqTBS 541
+#define OBJ_setct_AuthRevReqTBS 2L, 23L, 42L, 0L, 23L
+
+#define SN_setct_AuthRevResData "setct-AuthRevResData"
+#define NID_setct_AuthRevResData 542
+#define OBJ_setct_AuthRevResData 2L, 23L, 42L, 0L, 24L
+
+#define SN_setct_AuthRevResTBS "setct-AuthRevResTBS"
+#define NID_setct_AuthRevResTBS 543
+#define OBJ_setct_AuthRevResTBS 2L, 23L, 42L, 0L, 25L
+
+#define SN_setct_CapReqTBS "setct-CapReqTBS"
+#define NID_setct_CapReqTBS 544
+#define OBJ_setct_CapReqTBS 2L, 23L, 42L, 0L, 26L
+
+#define SN_setct_CapReqTBSX "setct-CapReqTBSX"
+#define NID_setct_CapReqTBSX 545
+#define OBJ_setct_CapReqTBSX 2L, 23L, 42L, 0L, 27L
+
+#define SN_setct_CapResData "setct-CapResData"
+#define NID_setct_CapResData 546
+#define OBJ_setct_CapResData 2L, 23L, 42L, 0L, 28L
+
+#define SN_setct_CapRevReqTBS "setct-CapRevReqTBS"
+#define NID_setct_CapRevReqTBS 547
+#define OBJ_setct_CapRevReqTBS 2L, 23L, 42L, 0L, 29L
+
+#define SN_setct_CapRevReqTBSX "setct-CapRevReqTBSX"
+#define NID_setct_CapRevReqTBSX 548
+#define OBJ_setct_CapRevReqTBSX 2L, 23L, 42L, 0L, 30L
+
+#define SN_setct_CapRevResData "setct-CapRevResData"
+#define NID_setct_CapRevResData 549
+#define OBJ_setct_CapRevResData 2L, 23L, 42L, 0L, 31L
+
+#define SN_setct_CredReqTBS "setct-CredReqTBS"
+#define NID_setct_CredReqTBS 550
+#define OBJ_setct_CredReqTBS 2L, 23L, 42L, 0L, 32L
+
+#define SN_setct_CredReqTBSX "setct-CredReqTBSX"
+#define NID_setct_CredReqTBSX 551
+#define OBJ_setct_CredReqTBSX 2L, 23L, 42L, 0L, 33L
+
+#define SN_setct_CredResData "setct-CredResData"
+#define NID_setct_CredResData 552
+#define OBJ_setct_CredResData 2L, 23L, 42L, 0L, 34L
+
+#define SN_setct_CredRevReqTBS "setct-CredRevReqTBS"
+#define NID_setct_CredRevReqTBS 553
+#define OBJ_setct_CredRevReqTBS 2L, 23L, 42L, 0L, 35L
+
+#define SN_setct_CredRevReqTBSX "setct-CredRevReqTBSX"
+#define NID_setct_CredRevReqTBSX 554
+#define OBJ_setct_CredRevReqTBSX 2L, 23L, 42L, 0L, 36L
+
+#define SN_setct_CredRevResData "setct-CredRevResData"
+#define NID_setct_CredRevResData 555
+#define OBJ_setct_CredRevResData 2L, 23L, 42L, 0L, 37L
+
+#define SN_setct_PCertReqData "setct-PCertReqData"
+#define NID_setct_PCertReqData 556
+#define OBJ_setct_PCertReqData 2L, 23L, 42L, 0L, 38L
+
+#define SN_setct_PCertResTBS "setct-PCertResTBS"
+#define NID_setct_PCertResTBS 557
+#define OBJ_setct_PCertResTBS 2L, 23L, 42L, 0L, 39L
+
+#define SN_setct_BatchAdminReqData "setct-BatchAdminReqData"
+#define NID_setct_BatchAdminReqData 558
+#define OBJ_setct_BatchAdminReqData 2L, 23L, 42L, 0L, 40L
+
+#define SN_setct_BatchAdminResData "setct-BatchAdminResData"
+#define NID_setct_BatchAdminResData 559
+#define OBJ_setct_BatchAdminResData 2L, 23L, 42L, 0L, 41L
+
+#define SN_setct_CardCInitResTBS "setct-CardCInitResTBS"
+#define NID_setct_CardCInitResTBS 560
+#define OBJ_setct_CardCInitResTBS 2L, 23L, 42L, 0L, 42L
+
+#define SN_setct_MeAqCInitResTBS "setct-MeAqCInitResTBS"
+#define NID_setct_MeAqCInitResTBS 561
+#define OBJ_setct_MeAqCInitResTBS 2L, 23L, 42L, 0L, 43L
+
+#define SN_setct_RegFormResTBS "setct-RegFormResTBS"
+#define NID_setct_RegFormResTBS 562
+#define OBJ_setct_RegFormResTBS 2L, 23L, 42L, 0L, 44L
+
+#define SN_setct_CertReqData "setct-CertReqData"
+#define NID_setct_CertReqData 563
+#define OBJ_setct_CertReqData 2L, 23L, 42L, 0L, 45L
+
+#define SN_setct_CertReqTBS "setct-CertReqTBS"
+#define NID_setct_CertReqTBS 564
+#define OBJ_setct_CertReqTBS 2L, 23L, 42L, 0L, 46L
+
+#define SN_setct_CertResData "setct-CertResData"
+#define NID_setct_CertResData 565
+#define OBJ_setct_CertResData 2L, 23L, 42L, 0L, 47L
+
+#define SN_setct_CertInqReqTBS "setct-CertInqReqTBS"
+#define NID_setct_CertInqReqTBS 566
+#define OBJ_setct_CertInqReqTBS 2L, 23L, 42L, 0L, 48L
+
+#define SN_setct_ErrorTBS "setct-ErrorTBS"
+#define NID_setct_ErrorTBS 567
+#define OBJ_setct_ErrorTBS 2L, 23L, 42L, 0L, 49L
+
+#define SN_setct_PIDualSignedTBE "setct-PIDualSignedTBE"
+#define NID_setct_PIDualSignedTBE 568
+#define OBJ_setct_PIDualSignedTBE 2L, 23L, 42L, 0L, 50L
+
+#define SN_setct_PIUnsignedTBE "setct-PIUnsignedTBE"
+#define NID_setct_PIUnsignedTBE 569
+#define OBJ_setct_PIUnsignedTBE 2L, 23L, 42L, 0L, 51L
+
+#define SN_setct_AuthReqTBE "setct-AuthReqTBE"
+#define NID_setct_AuthReqTBE 570
+#define OBJ_setct_AuthReqTBE 2L, 23L, 42L, 0L, 52L
+
+#define SN_setct_AuthResTBE "setct-AuthResTBE"
+#define NID_setct_AuthResTBE 571
+#define OBJ_setct_AuthResTBE 2L, 23L, 42L, 0L, 53L
+
+#define SN_setct_AuthResTBEX "setct-AuthResTBEX"
+#define NID_setct_AuthResTBEX 572
+#define OBJ_setct_AuthResTBEX 2L, 23L, 42L, 0L, 54L
+
+#define SN_setct_AuthTokenTBE "setct-AuthTokenTBE"
+#define NID_setct_AuthTokenTBE 573
+#define OBJ_setct_AuthTokenTBE 2L, 23L, 42L, 0L, 55L
+
+#define SN_setct_CapTokenTBE "setct-CapTokenTBE"
+#define NID_setct_CapTokenTBE 574
+#define OBJ_setct_CapTokenTBE 2L, 23L, 42L, 0L, 56L
+
+#define SN_setct_CapTokenTBEX "setct-CapTokenTBEX"
+#define NID_setct_CapTokenTBEX 575
+#define OBJ_setct_CapTokenTBEX 2L, 23L, 42L, 0L, 57L
+
+#define SN_setct_AcqCardCodeMsgTBE "setct-AcqCardCodeMsgTBE"
+#define NID_setct_AcqCardCodeMsgTBE 576
+#define OBJ_setct_AcqCardCodeMsgTBE 2L, 23L, 42L, 0L, 58L
+
+#define SN_setct_AuthRevReqTBE "setct-AuthRevReqTBE"
+#define NID_setct_AuthRevReqTBE 577
+#define OBJ_setct_AuthRevReqTBE 2L, 23L, 42L, 0L, 59L
+
+#define SN_setct_AuthRevResTBE "setct-AuthRevResTBE"
+#define NID_setct_AuthRevResTBE 578
+#define OBJ_setct_AuthRevResTBE 2L, 23L, 42L, 0L, 60L
+
+#define SN_setct_AuthRevResTBEB "setct-AuthRevResTBEB"
+#define NID_setct_AuthRevResTBEB 579
+#define OBJ_setct_AuthRevResTBEB 2L, 23L, 42L, 0L, 61L
+
+#define SN_setct_CapReqTBE "setct-CapReqTBE"
+#define NID_setct_CapReqTBE 580
+#define OBJ_setct_CapReqTBE 2L, 23L, 42L, 0L, 62L
+
+#define SN_setct_CapReqTBEX "setct-CapReqTBEX"
+#define NID_setct_CapReqTBEX 581
+#define OBJ_setct_CapReqTBEX 2L, 23L, 42L, 0L, 63L
+
+#define SN_setct_CapResTBE "setct-CapResTBE"
+#define NID_setct_CapResTBE 582
+#define OBJ_setct_CapResTBE 2L, 23L, 42L, 0L, 64L
+
+#define SN_setct_CapRevReqTBE "setct-CapRevReqTBE"
+#define NID_setct_CapRevReqTBE 583
+#define OBJ_setct_CapRevReqTBE 2L, 23L, 42L, 0L, 65L
+
+#define SN_setct_CapRevReqTBEX "setct-CapRevReqTBEX"
+#define NID_setct_CapRevReqTBEX 584
+#define OBJ_setct_CapRevReqTBEX 2L, 23L, 42L, 0L, 66L
+
+#define SN_setct_CapRevResTBE "setct-CapRevResTBE"
+#define NID_setct_CapRevResTBE 585
+#define OBJ_setct_CapRevResTBE 2L, 23L, 42L, 0L, 67L
+
+#define SN_setct_CredReqTBE "setct-CredReqTBE"
+#define NID_setct_CredReqTBE 586
+#define OBJ_setct_CredReqTBE 2L, 23L, 42L, 0L, 68L
+
+#define SN_setct_CredReqTBEX "setct-CredReqTBEX"
+#define NID_setct_CredReqTBEX 587
+#define OBJ_setct_CredReqTBEX 2L, 23L, 42L, 0L, 69L
+
+#define SN_setct_CredResTBE "setct-CredResTBE"
+#define NID_setct_CredResTBE 588
+#define OBJ_setct_CredResTBE 2L, 23L, 42L, 0L, 70L
+
+#define SN_setct_CredRevReqTBE "setct-CredRevReqTBE"
+#define NID_setct_CredRevReqTBE 589
+#define OBJ_setct_CredRevReqTBE 2L, 23L, 42L, 0L, 71L
+
+#define SN_setct_CredRevReqTBEX "setct-CredRevReqTBEX"
+#define NID_setct_CredRevReqTBEX 590
+#define OBJ_setct_CredRevReqTBEX 2L, 23L, 42L, 0L, 72L
+
+#define SN_setct_CredRevResTBE "setct-CredRevResTBE"
+#define NID_setct_CredRevResTBE 591
+#define OBJ_setct_CredRevResTBE 2L, 23L, 42L, 0L, 73L
+
+#define SN_setct_BatchAdminReqTBE "setct-BatchAdminReqTBE"
+#define NID_setct_BatchAdminReqTBE 592
+#define OBJ_setct_BatchAdminReqTBE 2L, 23L, 42L, 0L, 74L
+
+#define SN_setct_BatchAdminResTBE "setct-BatchAdminResTBE"
+#define NID_setct_BatchAdminResTBE 593
+#define OBJ_setct_BatchAdminResTBE 2L, 23L, 42L, 0L, 75L
+
+#define SN_setct_RegFormReqTBE "setct-RegFormReqTBE"
+#define NID_setct_RegFormReqTBE 594
+#define OBJ_setct_RegFormReqTBE 2L, 23L, 42L, 0L, 76L
+
+#define SN_setct_CertReqTBE "setct-CertReqTBE"
+#define NID_setct_CertReqTBE 595
+#define OBJ_setct_CertReqTBE 2L, 23L, 42L, 0L, 77L
+
+#define SN_setct_CertReqTBEX "setct-CertReqTBEX"
+#define NID_setct_CertReqTBEX 596
+#define OBJ_setct_CertReqTBEX 2L, 23L, 42L, 0L, 78L
+
+#define SN_setct_CertResTBE "setct-CertResTBE"
+#define NID_setct_CertResTBE 597
+#define OBJ_setct_CertResTBE 2L, 23L, 42L, 0L, 79L
+
+#define SN_setct_CRLNotificationTBS "setct-CRLNotificationTBS"
+#define NID_setct_CRLNotificationTBS 598
+#define OBJ_setct_CRLNotificationTBS 2L, 23L, 42L, 0L, 80L
+
+#define SN_setct_CRLNotificationResTBS "setct-CRLNotificationResTBS"
+#define NID_setct_CRLNotificationResTBS 599
+#define OBJ_setct_CRLNotificationResTBS 2L, 23L, 42L, 0L, 81L
+
+#define SN_setct_BCIDistributionTBS "setct-BCIDistributionTBS"
+#define NID_setct_BCIDistributionTBS 600
+#define OBJ_setct_BCIDistributionTBS 2L, 23L, 42L, 0L, 82L
+
+#define SN_setext_genCrypt "setext-genCrypt"
+#define LN_setext_genCrypt "generic cryptogram"
+#define NID_setext_genCrypt 601
+#define OBJ_setext_genCrypt 2L, 23L, 42L, 1L, 1L
+
+#define SN_setext_miAuth "setext-miAuth"
+#define LN_setext_miAuth "merchant initiated auth"
+#define NID_setext_miAuth 602
+#define OBJ_setext_miAuth 2L, 23L, 42L, 1L, 3L
+
+#define SN_setext_pinSecure "setext-pinSecure"
+#define NID_setext_pinSecure 603
+#define OBJ_setext_pinSecure 2L, 23L, 42L, 1L, 4L
+
+#define SN_setext_pinAny "setext-pinAny"
+#define NID_setext_pinAny 604
+#define OBJ_setext_pinAny 2L, 23L, 42L, 1L, 5L
+
+#define SN_setext_track2 "setext-track2"
+#define NID_setext_track2 605
+#define OBJ_setext_track2 2L, 23L, 42L, 1L, 7L
+
+#define SN_setext_cv "setext-cv"
+#define LN_setext_cv "additional verification"
+#define NID_setext_cv 606
+#define OBJ_setext_cv 2L, 23L, 42L, 1L, 8L
+
+#define SN_set_policy_root "set-policy-root"
+#define NID_set_policy_root 607
+#define OBJ_set_policy_root 2L, 23L, 42L, 5L, 0L
+
+#define SN_setCext_hashedRoot "setCext-hashedRoot"
+#define NID_setCext_hashedRoot 608
+#define OBJ_setCext_hashedRoot 2L, 23L, 42L, 7L, 0L
+
+#define SN_setCext_certType "setCext-certType"
+#define NID_setCext_certType 609
+#define OBJ_setCext_certType 2L, 23L, 42L, 7L, 1L
+
+#define SN_setCext_merchData "setCext-merchData"
+#define NID_setCext_merchData 610
+#define OBJ_setCext_merchData 2L, 23L, 42L, 7L, 2L
+
+#define SN_setCext_cCertRequired "setCext-cCertRequired"
+#define NID_setCext_cCertRequired 611
+#define OBJ_setCext_cCertRequired 2L, 23L, 42L, 7L, 3L
+
+#define SN_setCext_tunneling "setCext-tunneling"
+#define NID_setCext_tunneling 612
+#define OBJ_setCext_tunneling 2L, 23L, 42L, 7L, 4L
+
+#define SN_setCext_setExt "setCext-setExt"
+#define NID_setCext_setExt 613
+#define OBJ_setCext_setExt 2L, 23L, 42L, 7L, 5L
+
+#define SN_setCext_setQualf "setCext-setQualf"
+#define NID_setCext_setQualf 614
+#define OBJ_setCext_setQualf 2L, 23L, 42L, 7L, 6L
+
+#define SN_setCext_PGWYcapabilities "setCext-PGWYcapabilities"
+#define NID_setCext_PGWYcapabilities 615
+#define OBJ_setCext_PGWYcapabilities 2L, 23L, 42L, 7L, 7L
+
+#define SN_setCext_TokenIdentifier "setCext-TokenIdentifier"
+#define NID_setCext_TokenIdentifier 616
+#define OBJ_setCext_TokenIdentifier 2L, 23L, 42L, 7L, 8L
+
+#define SN_setCext_Track2Data "setCext-Track2Data"
+#define NID_setCext_Track2Data 617
+#define OBJ_setCext_Track2Data 2L, 23L, 42L, 7L, 9L
+
+#define SN_setCext_TokenType "setCext-TokenType"
+#define NID_setCext_TokenType 618
+#define OBJ_setCext_TokenType 2L, 23L, 42L, 7L, 10L
+
+#define SN_setCext_IssuerCapabilities "setCext-IssuerCapabilities"
+#define NID_setCext_IssuerCapabilities 619
+#define OBJ_setCext_IssuerCapabilities 2L, 23L, 42L, 7L, 11L
+
+#define SN_setAttr_Cert "setAttr-Cert"
+#define NID_setAttr_Cert 620
+#define OBJ_setAttr_Cert 2L, 23L, 42L, 3L, 0L
+
+#define SN_setAttr_PGWYcap "setAttr-PGWYcap"
+#define LN_setAttr_PGWYcap "payment gateway capabilities"
+#define NID_setAttr_PGWYcap 621
+#define OBJ_setAttr_PGWYcap 2L, 23L, 42L, 3L, 1L
+
+#define SN_setAttr_TokenType "setAttr-TokenType"
+#define NID_setAttr_TokenType 622
+#define OBJ_setAttr_TokenType 2L, 23L, 42L, 3L, 2L
+
+#define SN_setAttr_IssCap "setAttr-IssCap"
+#define LN_setAttr_IssCap "issuer capabilities"
+#define NID_setAttr_IssCap 623
+#define OBJ_setAttr_IssCap 2L, 23L, 42L, 3L, 3L
+
+#define SN_set_rootKeyThumb "set-rootKeyThumb"
+#define NID_set_rootKeyThumb 624
+#define OBJ_set_rootKeyThumb 2L, 23L, 42L, 3L, 0L, 0L
+
+#define SN_set_addPolicy "set-addPolicy"
+#define NID_set_addPolicy 625
+#define OBJ_set_addPolicy 2L, 23L, 42L, 3L, 0L, 1L
+
+#define SN_setAttr_Token_EMV "setAttr-Token-EMV"
+#define NID_setAttr_Token_EMV 626
+#define OBJ_setAttr_Token_EMV 2L, 23L, 42L, 3L, 2L, 1L
+
+#define SN_setAttr_Token_B0Prime "setAttr-Token-B0Prime"
+#define NID_setAttr_Token_B0Prime 627
+#define OBJ_setAttr_Token_B0Prime 2L, 23L, 42L, 3L, 2L, 2L
+
+#define SN_setAttr_IssCap_CVM "setAttr-IssCap-CVM"
+#define NID_setAttr_IssCap_CVM 628
+#define OBJ_setAttr_IssCap_CVM 2L, 23L, 42L, 3L, 3L, 3L
+
+#define SN_setAttr_IssCap_T2 "setAttr-IssCap-T2"
+#define NID_setAttr_IssCap_T2 629
+#define OBJ_setAttr_IssCap_T2 2L, 23L, 42L, 3L, 3L, 4L
+
+#define SN_setAttr_IssCap_Sig "setAttr-IssCap-Sig"
+#define NID_setAttr_IssCap_Sig 630
+#define OBJ_setAttr_IssCap_Sig 2L, 23L, 42L, 3L, 3L, 5L
+
+#define SN_setAttr_GenCryptgrm "setAttr-GenCryptgrm"
+#define LN_setAttr_GenCryptgrm "generate cryptogram"
+#define NID_setAttr_GenCryptgrm 631
+#define OBJ_setAttr_GenCryptgrm 2L, 23L, 42L, 3L, 3L, 3L, 1L
+
+#define SN_setAttr_T2Enc "setAttr-T2Enc"
+#define LN_setAttr_T2Enc "encrypted track 2"
+#define NID_setAttr_T2Enc 632
+#define OBJ_setAttr_T2Enc 2L, 23L, 42L, 3L, 3L, 4L, 1L
+
+#define SN_setAttr_T2cleartxt "setAttr-T2cleartxt"
+#define LN_setAttr_T2cleartxt "cleartext track 2"
+#define NID_setAttr_T2cleartxt 633
+#define OBJ_setAttr_T2cleartxt 2L, 23L, 42L, 3L, 3L, 4L, 2L
+
+#define SN_setAttr_TokICCsig "setAttr-TokICCsig"
+#define LN_setAttr_TokICCsig "ICC or token signature"
+#define NID_setAttr_TokICCsig 634
+#define OBJ_setAttr_TokICCsig 2L, 23L, 42L, 3L, 3L, 5L, 1L
+
+#define SN_setAttr_SecDevSig "setAttr-SecDevSig"
+#define LN_setAttr_SecDevSig "secure device signature"
+#define NID_setAttr_SecDevSig 635
+#define OBJ_setAttr_SecDevSig 2L, 23L, 42L, 3L, 3L, 5L, 2L
+
+#define SN_set_brand_IATA_ATA "set-brand-IATA-ATA"
+#define NID_set_brand_IATA_ATA 636
+#define OBJ_set_brand_IATA_ATA 2L, 23L, 42L, 8L, 1L
+
+#define SN_set_brand_Diners "set-brand-Diners"
+#define NID_set_brand_Diners 637
+#define OBJ_set_brand_Diners 2L, 23L, 42L, 8L, 30L
+
+#define SN_set_brand_AmericanExpress "set-brand-AmericanExpress"
+#define NID_set_brand_AmericanExpress 638
+#define OBJ_set_brand_AmericanExpress 2L, 23L, 42L, 8L, 34L
+
+#define SN_set_brand_JCB "set-brand-JCB"
+#define NID_set_brand_JCB 639
+#define OBJ_set_brand_JCB 2L, 23L, 42L, 8L, 35L
+
+#define SN_set_brand_Visa "set-brand-Visa"
+#define NID_set_brand_Visa 640
+#define OBJ_set_brand_Visa 2L, 23L, 42L, 8L, 4L
+
+#define SN_set_brand_MasterCard "set-brand-MasterCard"
+#define NID_set_brand_MasterCard 641
+#define OBJ_set_brand_MasterCard 2L, 23L, 42L, 8L, 5L
+
+#define SN_set_brand_Novus "set-brand-Novus"
+#define NID_set_brand_Novus 642
+#define OBJ_set_brand_Novus 2L, 23L, 42L, 8L, 6011L
+
+#define SN_des_cdmf "DES-CDMF"
+#define LN_des_cdmf "des-cdmf"
+#define NID_des_cdmf 643
+#define OBJ_des_cdmf 1L, 2L, 840L, 113549L, 3L, 10L
+
+#define SN_rsaOAEPEncryptionSET "rsaOAEPEncryptionSET"
+#define NID_rsaOAEPEncryptionSET 644
+#define OBJ_rsaOAEPEncryptionSET 1L, 2L, 840L, 113549L, 1L, 1L, 6L
+
+#define SN_itu_t "ITU-T"
+#define LN_itu_t "itu-t"
+#define NID_itu_t 645
+#define OBJ_itu_t 0L
+
+#define SN_joint_iso_itu_t "JOINT-ISO-ITU-T"
+#define LN_joint_iso_itu_t "joint-iso-itu-t"
+#define NID_joint_iso_itu_t 646
+#define OBJ_joint_iso_itu_t 2L
+
+#define SN_international_organizations "international-organizations"
+#define LN_international_organizations "International Organizations"
+#define NID_international_organizations 647
+#define OBJ_international_organizations 2L, 23L
+
+#define SN_ms_smartcard_login "msSmartcardLogin"
+#define LN_ms_smartcard_login "Microsoft Smartcardlogin"
+#define NID_ms_smartcard_login 648
+#define OBJ_ms_smartcard_login 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 2L
+
+#define SN_ms_upn "msUPN"
+#define LN_ms_upn "Microsoft Universal Principal Name"
+#define NID_ms_upn 649
+#define OBJ_ms_upn 1L, 3L, 6L, 1L, 4L, 1L, 311L, 20L, 2L, 3L
+
+#define SN_aes_128_cfb1 "AES-128-CFB1"
+#define LN_aes_128_cfb1 "aes-128-cfb1"
+#define NID_aes_128_cfb1 650
+
+#define SN_aes_192_cfb1 "AES-192-CFB1"
+#define LN_aes_192_cfb1 "aes-192-cfb1"
+#define NID_aes_192_cfb1 651
+
+#define SN_aes_256_cfb1 "AES-256-CFB1"
+#define LN_aes_256_cfb1 "aes-256-cfb1"
+#define NID_aes_256_cfb1 652
+
+#define SN_aes_128_cfb8 "AES-128-CFB8"
+#define LN_aes_128_cfb8 "aes-128-cfb8"
+#define NID_aes_128_cfb8 653
+
+#define SN_aes_192_cfb8 "AES-192-CFB8"
+#define LN_aes_192_cfb8 "aes-192-cfb8"
+#define NID_aes_192_cfb8 654
+
+#define SN_aes_256_cfb8 "AES-256-CFB8"
+#define LN_aes_256_cfb8 "aes-256-cfb8"
+#define NID_aes_256_cfb8 655
+
+#define SN_des_cfb1 "DES-CFB1"
+#define LN_des_cfb1 "des-cfb1"
+#define NID_des_cfb1 656
+
+#define SN_des_cfb8 "DES-CFB8"
+#define LN_des_cfb8 "des-cfb8"
+#define NID_des_cfb8 657
+
+#define SN_des_ede3_cfb1 "DES-EDE3-CFB1"
+#define LN_des_ede3_cfb1 "des-ede3-cfb1"
+#define NID_des_ede3_cfb1 658
+
+#define SN_des_ede3_cfb8 "DES-EDE3-CFB8"
+#define LN_des_ede3_cfb8 "des-ede3-cfb8"
+#define NID_des_ede3_cfb8 659
+
+#define SN_streetAddress "street"
+#define LN_streetAddress "streetAddress"
+#define NID_streetAddress 660
+#define OBJ_streetAddress 2L, 5L, 4L, 9L
+
+#define LN_postalCode "postalCode"
+#define NID_postalCode 661
+#define OBJ_postalCode 2L, 5L, 4L, 17L
+
+#define SN_id_ppl "id-ppl"
+#define NID_id_ppl 662
+#define OBJ_id_ppl 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L
+
+#define SN_proxyCertInfo "proxyCertInfo"
+#define LN_proxyCertInfo "Proxy Certificate Information"
+#define NID_proxyCertInfo 663
+#define OBJ_proxyCertInfo 1L, 3L, 6L, 1L, 5L, 5L, 7L, 1L, 14L
+
+#define SN_id_ppl_anyLanguage "id-ppl-anyLanguage"
+#define LN_id_ppl_anyLanguage "Any language"
+#define NID_id_ppl_anyLanguage 664
+#define OBJ_id_ppl_anyLanguage 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 0L
+
+#define SN_id_ppl_inheritAll "id-ppl-inheritAll"
+#define LN_id_ppl_inheritAll "Inherit all"
+#define NID_id_ppl_inheritAll 665
+#define OBJ_id_ppl_inheritAll 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 1L
+
+#define SN_name_constraints "nameConstraints"
+#define LN_name_constraints "X509v3 Name Constraints"
+#define NID_name_constraints 666
+#define OBJ_name_constraints 2L, 5L, 29L, 30L
+
+#define SN_Independent "id-ppl-independent"
+#define LN_Independent "Independent"
+#define NID_Independent 667
+#define OBJ_Independent 1L, 3L, 6L, 1L, 5L, 5L, 7L, 21L, 2L
+
+#define SN_sha256WithRSAEncryption "RSA-SHA256"
+#define LN_sha256WithRSAEncryption "sha256WithRSAEncryption"
+#define NID_sha256WithRSAEncryption 668
+#define OBJ_sha256WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 11L
+
+#define SN_sha384WithRSAEncryption "RSA-SHA384"
+#define LN_sha384WithRSAEncryption "sha384WithRSAEncryption"
+#define NID_sha384WithRSAEncryption 669
+#define OBJ_sha384WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 12L
+
+#define SN_sha512WithRSAEncryption "RSA-SHA512"
+#define LN_sha512WithRSAEncryption "sha512WithRSAEncryption"
+#define NID_sha512WithRSAEncryption 670
+#define OBJ_sha512WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 13L
+
+#define SN_sha224WithRSAEncryption "RSA-SHA224"
+#define LN_sha224WithRSAEncryption "sha224WithRSAEncryption"
+#define NID_sha224WithRSAEncryption 671
+#define OBJ_sha224WithRSAEncryption 1L, 2L, 840L, 113549L, 1L, 1L, 14L
+
+#define SN_sha256 "SHA256"
+#define LN_sha256 "sha256"
+#define NID_sha256 672
+#define OBJ_sha256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 1L
+
+#define SN_sha384 "SHA384"
+#define LN_sha384 "sha384"
+#define NID_sha384 673
+#define OBJ_sha384 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 2L
+
+#define SN_sha512 "SHA512"
+#define LN_sha512 "sha512"
+#define NID_sha512 674
+#define OBJ_sha512 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 3L
+
+#define SN_sha224 "SHA224"
+#define LN_sha224 "sha224"
+#define NID_sha224 675
+#define OBJ_sha224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 2L, 4L
+
+#define SN_identified_organization "identified-organization"
+#define NID_identified_organization 676
+#define OBJ_identified_organization 1L, 3L
+
+#define SN_certicom_arc "certicom-arc"
+#define NID_certicom_arc 677
+#define OBJ_certicom_arc 1L, 3L, 132L
+
+#define SN_wap "wap"
+#define NID_wap 678
+#define OBJ_wap 2L, 23L, 43L
+
+#define SN_wap_wsg "wap-wsg"
+#define NID_wap_wsg 679
+#define OBJ_wap_wsg 2L, 23L, 43L, 1L
+
+#define SN_X9_62_id_characteristic_two_basis "id-characteristic-two-basis"
+#define NID_X9_62_id_characteristic_two_basis 680
+#define OBJ_X9_62_id_characteristic_two_basis 1L, 2L, 840L, 10045L, 1L, 2L, 3L
+
+#define SN_X9_62_onBasis "onBasis"
+#define NID_X9_62_onBasis 681
+#define OBJ_X9_62_onBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 1L
+
+#define SN_X9_62_tpBasis "tpBasis"
+#define NID_X9_62_tpBasis 682
+#define OBJ_X9_62_tpBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 2L
+
+#define SN_X9_62_ppBasis "ppBasis"
+#define NID_X9_62_ppBasis 683
+#define OBJ_X9_62_ppBasis 1L, 2L, 840L, 10045L, 1L, 2L, 3L, 3L
+
+#define SN_X9_62_c2pnb163v1 "c2pnb163v1"
+#define NID_X9_62_c2pnb163v1 684
+#define OBJ_X9_62_c2pnb163v1 1L, 2L, 840L, 10045L, 3L, 0L, 1L
+
+#define SN_X9_62_c2pnb163v2 "c2pnb163v2"
+#define NID_X9_62_c2pnb163v2 685
+#define OBJ_X9_62_c2pnb163v2 1L, 2L, 840L, 10045L, 3L, 0L, 2L
+
+#define SN_X9_62_c2pnb163v3 "c2pnb163v3"
+#define NID_X9_62_c2pnb163v3 686
+#define OBJ_X9_62_c2pnb163v3 1L, 2L, 840L, 10045L, 3L, 0L, 3L
+
+#define SN_X9_62_c2pnb176v1 "c2pnb176v1"
+#define NID_X9_62_c2pnb176v1 687
+#define OBJ_X9_62_c2pnb176v1 1L, 2L, 840L, 10045L, 3L, 0L, 4L
+
+#define SN_X9_62_c2tnb191v1 "c2tnb191v1"
+#define NID_X9_62_c2tnb191v1 688
+#define OBJ_X9_62_c2tnb191v1 1L, 2L, 840L, 10045L, 3L, 0L, 5L
+
+#define SN_X9_62_c2tnb191v2 "c2tnb191v2"
+#define NID_X9_62_c2tnb191v2 689
+#define OBJ_X9_62_c2tnb191v2 1L, 2L, 840L, 10045L, 3L, 0L, 6L
+
+#define SN_X9_62_c2tnb191v3 "c2tnb191v3"
+#define NID_X9_62_c2tnb191v3 690
+#define OBJ_X9_62_c2tnb191v3 1L, 2L, 840L, 10045L, 3L, 0L, 7L
+
+#define SN_X9_62_c2onb191v4 "c2onb191v4"
+#define NID_X9_62_c2onb191v4 691
+#define OBJ_X9_62_c2onb191v4 1L, 2L, 840L, 10045L, 3L, 0L, 8L
+
+#define SN_X9_62_c2onb191v5 "c2onb191v5"
+#define NID_X9_62_c2onb191v5 692
+#define OBJ_X9_62_c2onb191v5 1L, 2L, 840L, 10045L, 3L, 0L, 9L
+
+#define SN_X9_62_c2pnb208w1 "c2pnb208w1"
+#define NID_X9_62_c2pnb208w1 693
+#define OBJ_X9_62_c2pnb208w1 1L, 2L, 840L, 10045L, 3L, 0L, 10L
+
+#define SN_X9_62_c2tnb239v1 "c2tnb239v1"
+#define NID_X9_62_c2tnb239v1 694
+#define OBJ_X9_62_c2tnb239v1 1L, 2L, 840L, 10045L, 3L, 0L, 11L
+
+#define SN_X9_62_c2tnb239v2 "c2tnb239v2"
+#define NID_X9_62_c2tnb239v2 695
+#define OBJ_X9_62_c2tnb239v2 1L, 2L, 840L, 10045L, 3L, 0L, 12L
+
+#define SN_X9_62_c2tnb239v3 "c2tnb239v3"
+#define NID_X9_62_c2tnb239v3 696
+#define OBJ_X9_62_c2tnb239v3 1L, 2L, 840L, 10045L, 3L, 0L, 13L
+
+#define SN_X9_62_c2onb239v4 "c2onb239v4"
+#define NID_X9_62_c2onb239v4 697
+#define OBJ_X9_62_c2onb239v4 1L, 2L, 840L, 10045L, 3L, 0L, 14L
+
+#define SN_X9_62_c2onb239v5 "c2onb239v5"
+#define NID_X9_62_c2onb239v5 698
+#define OBJ_X9_62_c2onb239v5 1L, 2L, 840L, 10045L, 3L, 0L, 15L
+
+#define SN_X9_62_c2pnb272w1 "c2pnb272w1"
+#define NID_X9_62_c2pnb272w1 699
+#define OBJ_X9_62_c2pnb272w1 1L, 2L, 840L, 10045L, 3L, 0L, 16L
+
+#define SN_X9_62_c2pnb304w1 "c2pnb304w1"
+#define NID_X9_62_c2pnb304w1 700
+#define OBJ_X9_62_c2pnb304w1 1L, 2L, 840L, 10045L, 3L, 0L, 17L
+
+#define SN_X9_62_c2tnb359v1 "c2tnb359v1"
+#define NID_X9_62_c2tnb359v1 701
+#define OBJ_X9_62_c2tnb359v1 1L, 2L, 840L, 10045L, 3L, 0L, 18L
+
+#define SN_X9_62_c2pnb368w1 "c2pnb368w1"
+#define NID_X9_62_c2pnb368w1 702
+#define OBJ_X9_62_c2pnb368w1 1L, 2L, 840L, 10045L, 3L, 0L, 19L
+
+#define SN_X9_62_c2tnb431r1 "c2tnb431r1"
+#define NID_X9_62_c2tnb431r1 703
+#define OBJ_X9_62_c2tnb431r1 1L, 2L, 840L, 10045L, 3L, 0L, 20L
+
+#define SN_secp112r1 "secp112r1"
+#define NID_secp112r1 704
+#define OBJ_secp112r1 1L, 3L, 132L, 0L, 6L
+
+#define SN_secp112r2 "secp112r2"
+#define NID_secp112r2 705
+#define OBJ_secp112r2 1L, 3L, 132L, 0L, 7L
+
+#define SN_secp128r1 "secp128r1"
+#define NID_secp128r1 706
+#define OBJ_secp128r1 1L, 3L, 132L, 0L, 28L
+
+#define SN_secp128r2 "secp128r2"
+#define NID_secp128r2 707
+#define OBJ_secp128r2 1L, 3L, 132L, 0L, 29L
+
+#define SN_secp160k1 "secp160k1"
+#define NID_secp160k1 708
+#define OBJ_secp160k1 1L, 3L, 132L, 0L, 9L
+
+#define SN_secp160r1 "secp160r1"
+#define NID_secp160r1 709
+#define OBJ_secp160r1 1L, 3L, 132L, 0L, 8L
+
+#define SN_secp160r2 "secp160r2"
+#define NID_secp160r2 710
+#define OBJ_secp160r2 1L, 3L, 132L, 0L, 30L
+
+#define SN_secp192k1 "secp192k1"
+#define NID_secp192k1 711
+#define OBJ_secp192k1 1L, 3L, 132L, 0L, 31L
+
+#define SN_secp224k1 "secp224k1"
+#define NID_secp224k1 712
+#define OBJ_secp224k1 1L, 3L, 132L, 0L, 32L
+
+#define SN_secp224r1 "secp224r1"
+#define NID_secp224r1 713
+#define OBJ_secp224r1 1L, 3L, 132L, 0L, 33L
+
+#define SN_secp256k1 "secp256k1"
+#define NID_secp256k1 714
+#define OBJ_secp256k1 1L, 3L, 132L, 0L, 10L
+
+#define SN_secp384r1 "secp384r1"
+#define NID_secp384r1 715
+#define OBJ_secp384r1 1L, 3L, 132L, 0L, 34L
+
+#define SN_secp521r1 "secp521r1"
+#define NID_secp521r1 716
+#define OBJ_secp521r1 1L, 3L, 132L, 0L, 35L
+
+#define SN_sect113r1 "sect113r1"
+#define NID_sect113r1 717
+#define OBJ_sect113r1 1L, 3L, 132L, 0L, 4L
+
+#define SN_sect113r2 "sect113r2"
+#define NID_sect113r2 718
+#define OBJ_sect113r2 1L, 3L, 132L, 0L, 5L
+
+#define SN_sect131r1 "sect131r1"
+#define NID_sect131r1 719
+#define OBJ_sect131r1 1L, 3L, 132L, 0L, 22L
+
+#define SN_sect131r2 "sect131r2"
+#define NID_sect131r2 720
+#define OBJ_sect131r2 1L, 3L, 132L, 0L, 23L
+
+#define SN_sect163k1 "sect163k1"
+#define NID_sect163k1 721
+#define OBJ_sect163k1 1L, 3L, 132L, 0L, 1L
+
+#define SN_sect163r1 "sect163r1"
+#define NID_sect163r1 722
+#define OBJ_sect163r1 1L, 3L, 132L, 0L, 2L
+
+#define SN_sect163r2 "sect163r2"
+#define NID_sect163r2 723
+#define OBJ_sect163r2 1L, 3L, 132L, 0L, 15L
+
+#define SN_sect193r1 "sect193r1"
+#define NID_sect193r1 724
+#define OBJ_sect193r1 1L, 3L, 132L, 0L, 24L
+
+#define SN_sect193r2 "sect193r2"
+#define NID_sect193r2 725
+#define OBJ_sect193r2 1L, 3L, 132L, 0L, 25L
+
+#define SN_sect233k1 "sect233k1"
+#define NID_sect233k1 726
+#define OBJ_sect233k1 1L, 3L, 132L, 0L, 26L
+
+#define SN_sect233r1 "sect233r1"
+#define NID_sect233r1 727
+#define OBJ_sect233r1 1L, 3L, 132L, 0L, 27L
+
+#define SN_sect239k1 "sect239k1"
+#define NID_sect239k1 728
+#define OBJ_sect239k1 1L, 3L, 132L, 0L, 3L
+
+#define SN_sect283k1 "sect283k1"
+#define NID_sect283k1 729
+#define OBJ_sect283k1 1L, 3L, 132L, 0L, 16L
+
+#define SN_sect283r1 "sect283r1"
+#define NID_sect283r1 730
+#define OBJ_sect283r1 1L, 3L, 132L, 0L, 17L
+
+#define SN_sect409k1 "sect409k1"
+#define NID_sect409k1 731
+#define OBJ_sect409k1 1L, 3L, 132L, 0L, 36L
+
+#define SN_sect409r1 "sect409r1"
+#define NID_sect409r1 732
+#define OBJ_sect409r1 1L, 3L, 132L, 0L, 37L
+
+#define SN_sect571k1 "sect571k1"
+#define NID_sect571k1 733
+#define OBJ_sect571k1 1L, 3L, 132L, 0L, 38L
+
+#define SN_sect571r1 "sect571r1"
+#define NID_sect571r1 734
+#define OBJ_sect571r1 1L, 3L, 132L, 0L, 39L
+
+#define SN_wap_wsg_idm_ecid_wtls1 "wap-wsg-idm-ecid-wtls1"
+#define NID_wap_wsg_idm_ecid_wtls1 735
+#define OBJ_wap_wsg_idm_ecid_wtls1 2L, 23L, 43L, 1L, 4L, 1L
+
+#define SN_wap_wsg_idm_ecid_wtls3 "wap-wsg-idm-ecid-wtls3"
+#define NID_wap_wsg_idm_ecid_wtls3 736
+#define OBJ_wap_wsg_idm_ecid_wtls3 2L, 23L, 43L, 1L, 4L, 3L
+
+#define SN_wap_wsg_idm_ecid_wtls4 "wap-wsg-idm-ecid-wtls4"
+#define NID_wap_wsg_idm_ecid_wtls4 737
+#define OBJ_wap_wsg_idm_ecid_wtls4 2L, 23L, 43L, 1L, 4L, 4L
+
+#define SN_wap_wsg_idm_ecid_wtls5 "wap-wsg-idm-ecid-wtls5"
+#define NID_wap_wsg_idm_ecid_wtls5 738
+#define OBJ_wap_wsg_idm_ecid_wtls5 2L, 23L, 43L, 1L, 4L, 5L
+
+#define SN_wap_wsg_idm_ecid_wtls6 "wap-wsg-idm-ecid-wtls6"
+#define NID_wap_wsg_idm_ecid_wtls6 739
+#define OBJ_wap_wsg_idm_ecid_wtls6 2L, 23L, 43L, 1L, 4L, 6L
+
+#define SN_wap_wsg_idm_ecid_wtls7 "wap-wsg-idm-ecid-wtls7"
+#define NID_wap_wsg_idm_ecid_wtls7 740
+#define OBJ_wap_wsg_idm_ecid_wtls7 2L, 23L, 43L, 1L, 4L, 7L
+
+#define SN_wap_wsg_idm_ecid_wtls8 "wap-wsg-idm-ecid-wtls8"
+#define NID_wap_wsg_idm_ecid_wtls8 741
+#define OBJ_wap_wsg_idm_ecid_wtls8 2L, 23L, 43L, 1L, 4L, 8L
+
+#define SN_wap_wsg_idm_ecid_wtls9 "wap-wsg-idm-ecid-wtls9"
+#define NID_wap_wsg_idm_ecid_wtls9 742
+#define OBJ_wap_wsg_idm_ecid_wtls9 2L, 23L, 43L, 1L, 4L, 9L
+
+#define SN_wap_wsg_idm_ecid_wtls10 "wap-wsg-idm-ecid-wtls10"
+#define NID_wap_wsg_idm_ecid_wtls10 743
+#define OBJ_wap_wsg_idm_ecid_wtls10 2L, 23L, 43L, 1L, 4L, 10L
+
+#define SN_wap_wsg_idm_ecid_wtls11 "wap-wsg-idm-ecid-wtls11"
+#define NID_wap_wsg_idm_ecid_wtls11 744
+#define OBJ_wap_wsg_idm_ecid_wtls11 2L, 23L, 43L, 1L, 4L, 11L
+
+#define SN_wap_wsg_idm_ecid_wtls12 "wap-wsg-idm-ecid-wtls12"
+#define NID_wap_wsg_idm_ecid_wtls12 745
+#define OBJ_wap_wsg_idm_ecid_wtls12 2L, 23L, 43L, 1L, 4L, 12L
+
+#define SN_any_policy "anyPolicy"
+#define LN_any_policy "X509v3 Any Policy"
+#define NID_any_policy 746
+#define OBJ_any_policy 2L, 5L, 29L, 32L, 0L
+
+#define SN_policy_mappings "policyMappings"
+#define LN_policy_mappings "X509v3 Policy Mappings"
+#define NID_policy_mappings 747
+#define OBJ_policy_mappings 2L, 5L, 29L, 33L
+
+#define SN_inhibit_any_policy "inhibitAnyPolicy"
+#define LN_inhibit_any_policy "X509v3 Inhibit Any Policy"
+#define NID_inhibit_any_policy 748
+#define OBJ_inhibit_any_policy 2L, 5L, 29L, 54L
+
+#define SN_ipsec3 "Oakley-EC2N-3"
+#define LN_ipsec3 "ipsec3"
+#define NID_ipsec3 749
+
+#define SN_ipsec4 "Oakley-EC2N-4"
+#define LN_ipsec4 "ipsec4"
+#define NID_ipsec4 750
+
+#define SN_camellia_128_cbc "CAMELLIA-128-CBC"
+#define LN_camellia_128_cbc "camellia-128-cbc"
+#define NID_camellia_128_cbc 751
+#define OBJ_camellia_128_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 2L
+
+#define SN_camellia_192_cbc "CAMELLIA-192-CBC"
+#define LN_camellia_192_cbc "camellia-192-cbc"
+#define NID_camellia_192_cbc 752
+#define OBJ_camellia_192_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 3L
+
+#define SN_camellia_256_cbc "CAMELLIA-256-CBC"
+#define LN_camellia_256_cbc "camellia-256-cbc"
+#define NID_camellia_256_cbc 753
+#define OBJ_camellia_256_cbc 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 1L, 4L
+
+#define SN_camellia_128_ecb "CAMELLIA-128-ECB"
+#define LN_camellia_128_ecb "camellia-128-ecb"
+#define NID_camellia_128_ecb 754
+#define OBJ_camellia_128_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 1L
+
+#define SN_camellia_192_ecb "CAMELLIA-192-ECB"
+#define LN_camellia_192_ecb "camellia-192-ecb"
+#define NID_camellia_192_ecb 755
+#define OBJ_camellia_192_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 21L
+
+#define SN_camellia_256_ecb "CAMELLIA-256-ECB"
+#define LN_camellia_256_ecb "camellia-256-ecb"
+#define NID_camellia_256_ecb 756
+#define OBJ_camellia_256_ecb 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 41L
+
+#define SN_camellia_128_cfb128 "CAMELLIA-128-CFB"
+#define LN_camellia_128_cfb128 "camellia-128-cfb"
+#define NID_camellia_128_cfb128 757
+#define OBJ_camellia_128_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 4L
+
+#define SN_camellia_192_cfb128 "CAMELLIA-192-CFB"
+#define LN_camellia_192_cfb128 "camellia-192-cfb"
+#define NID_camellia_192_cfb128 758
+#define OBJ_camellia_192_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 24L
+
+#define SN_camellia_256_cfb128 "CAMELLIA-256-CFB"
+#define LN_camellia_256_cfb128 "camellia-256-cfb"
+#define NID_camellia_256_cfb128 759
+#define OBJ_camellia_256_cfb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 44L
+
+#define SN_camellia_128_cfb1 "CAMELLIA-128-CFB1"
+#define LN_camellia_128_cfb1 "camellia-128-cfb1"
+#define NID_camellia_128_cfb1 760
+
+#define SN_camellia_192_cfb1 "CAMELLIA-192-CFB1"
+#define LN_camellia_192_cfb1 "camellia-192-cfb1"
+#define NID_camellia_192_cfb1 761
+
+#define SN_camellia_256_cfb1 "CAMELLIA-256-CFB1"
+#define LN_camellia_256_cfb1 "camellia-256-cfb1"
+#define NID_camellia_256_cfb1 762
+
+#define SN_camellia_128_cfb8 "CAMELLIA-128-CFB8"
+#define LN_camellia_128_cfb8 "camellia-128-cfb8"
+#define NID_camellia_128_cfb8 763
+
+#define SN_camellia_192_cfb8 "CAMELLIA-192-CFB8"
+#define LN_camellia_192_cfb8 "camellia-192-cfb8"
+#define NID_camellia_192_cfb8 764
+
+#define SN_camellia_256_cfb8 "CAMELLIA-256-CFB8"
+#define LN_camellia_256_cfb8 "camellia-256-cfb8"
+#define NID_camellia_256_cfb8 765
+
+#define SN_camellia_128_ofb128 "CAMELLIA-128-OFB"
+#define LN_camellia_128_ofb128 "camellia-128-ofb"
+#define NID_camellia_128_ofb128 766
+#define OBJ_camellia_128_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 3L
+
+#define SN_camellia_192_ofb128 "CAMELLIA-192-OFB"
+#define LN_camellia_192_ofb128 "camellia-192-ofb"
+#define NID_camellia_192_ofb128 767
+#define OBJ_camellia_192_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 23L
+
+#define SN_camellia_256_ofb128 "CAMELLIA-256-OFB"
+#define LN_camellia_256_ofb128 "camellia-256-ofb"
+#define NID_camellia_256_ofb128 768
+#define OBJ_camellia_256_ofb128 0L, 3L, 4401L, 5L, 3L, 1L, 9L, 43L
+
+#define SN_subject_directory_attributes "subjectDirectoryAttributes"
+#define LN_subject_directory_attributes "X509v3 Subject Directory Attributes"
+#define NID_subject_directory_attributes 769
+#define OBJ_subject_directory_attributes 2L, 5L, 29L, 9L
+
+#define SN_issuing_distribution_point "issuingDistributionPoint"
+#define LN_issuing_distribution_point "X509v3 Issuing Distribution Point"
+#define NID_issuing_distribution_point 770
+#define OBJ_issuing_distribution_point 2L, 5L, 29L, 28L
+
+#define SN_certificate_issuer "certificateIssuer"
+#define LN_certificate_issuer "X509v3 Certificate Issuer"
+#define NID_certificate_issuer 771
+#define OBJ_certificate_issuer 2L, 5L, 29L, 29L
+
+#define SN_kisa "KISA"
+#define LN_kisa "kisa"
+#define NID_kisa 773
+#define OBJ_kisa 1L, 2L, 410L, 200004L
+
+#define SN_seed_ecb "SEED-ECB"
+#define LN_seed_ecb "seed-ecb"
+#define NID_seed_ecb 776
+#define OBJ_seed_ecb 1L, 2L, 410L, 200004L, 1L, 3L
+
+#define SN_seed_cbc "SEED-CBC"
+#define LN_seed_cbc "seed-cbc"
+#define NID_seed_cbc 777
+#define OBJ_seed_cbc 1L, 2L, 410L, 200004L, 1L, 4L
+
+#define SN_seed_ofb128 "SEED-OFB"
+#define LN_seed_ofb128 "seed-ofb"
+#define NID_seed_ofb128 778
+#define OBJ_seed_ofb128 1L, 2L, 410L, 200004L, 1L, 6L
+
+#define SN_seed_cfb128 "SEED-CFB"
+#define LN_seed_cfb128 "seed-cfb"
+#define NID_seed_cfb128 779
+#define OBJ_seed_cfb128 1L, 2L, 410L, 200004L, 1L, 5L
+
+#define SN_hmac_md5 "HMAC-MD5"
+#define LN_hmac_md5 "hmac-md5"
+#define NID_hmac_md5 780
+#define OBJ_hmac_md5 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 1L
+
+#define SN_hmac_sha1 "HMAC-SHA1"
+#define LN_hmac_sha1 "hmac-sha1"
+#define NID_hmac_sha1 781
+#define OBJ_hmac_sha1 1L, 3L, 6L, 1L, 5L, 5L, 8L, 1L, 2L
+
+#define SN_id_PasswordBasedMAC "id-PasswordBasedMAC"
+#define LN_id_PasswordBasedMAC "password based MAC"
+#define NID_id_PasswordBasedMAC 782
+#define OBJ_id_PasswordBasedMAC 1L, 2L, 840L, 113533L, 7L, 66L, 13L
+
+#define SN_id_DHBasedMac "id-DHBasedMac"
+#define LN_id_DHBasedMac "Diffie-Hellman based MAC"
+#define NID_id_DHBasedMac 783
+#define OBJ_id_DHBasedMac 1L, 2L, 840L, 113533L, 7L, 66L, 30L
+
+#define SN_id_it_suppLangTags "id-it-suppLangTags"
+#define NID_id_it_suppLangTags 784
+#define OBJ_id_it_suppLangTags 1L, 3L, 6L, 1L, 5L, 5L, 7L, 4L, 16L
+
+#define SN_caRepository "caRepository"
+#define LN_caRepository "CA Repository"
+#define NID_caRepository 785
+#define OBJ_caRepository 1L, 3L, 6L, 1L, 5L, 5L, 7L, 48L, 5L
+
+#define SN_id_smime_ct_compressedData "id-smime-ct-compressedData"
+#define NID_id_smime_ct_compressedData 786
+#define OBJ_id_smime_ct_compressedData \
+  1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 9L
+
+#define SN_id_ct_asciiTextWithCRLF "id-ct-asciiTextWithCRLF"
+#define NID_id_ct_asciiTextWithCRLF 787
+#define OBJ_id_ct_asciiTextWithCRLF 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 1L, 27L
+
+#define SN_id_aes128_wrap "id-aes128-wrap"
+#define NID_id_aes128_wrap 788
+#define OBJ_id_aes128_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 5L
+
+#define SN_id_aes192_wrap "id-aes192-wrap"
+#define NID_id_aes192_wrap 789
+#define OBJ_id_aes192_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 25L
+
+#define SN_id_aes256_wrap "id-aes256-wrap"
+#define NID_id_aes256_wrap 790
+#define OBJ_id_aes256_wrap 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 45L
+
+#define SN_ecdsa_with_Recommended "ecdsa-with-Recommended"
+#define NID_ecdsa_with_Recommended 791
+#define OBJ_ecdsa_with_Recommended 1L, 2L, 840L, 10045L, 4L, 2L
+
+#define SN_ecdsa_with_Specified "ecdsa-with-Specified"
+#define NID_ecdsa_with_Specified 792
+#define OBJ_ecdsa_with_Specified 1L, 2L, 840L, 10045L, 4L, 3L
+
+#define SN_ecdsa_with_SHA224 "ecdsa-with-SHA224"
+#define NID_ecdsa_with_SHA224 793
+#define OBJ_ecdsa_with_SHA224 1L, 2L, 840L, 10045L, 4L, 3L, 1L
+
+#define SN_ecdsa_with_SHA256 "ecdsa-with-SHA256"
+#define NID_ecdsa_with_SHA256 794
+#define OBJ_ecdsa_with_SHA256 1L, 2L, 840L, 10045L, 4L, 3L, 2L
+
+#define SN_ecdsa_with_SHA384 "ecdsa-with-SHA384"
+#define NID_ecdsa_with_SHA384 795
+#define OBJ_ecdsa_with_SHA384 1L, 2L, 840L, 10045L, 4L, 3L, 3L
+
+#define SN_ecdsa_with_SHA512 "ecdsa-with-SHA512"
+#define NID_ecdsa_with_SHA512 796
+#define OBJ_ecdsa_with_SHA512 1L, 2L, 840L, 10045L, 4L, 3L, 4L
+
+#define LN_hmacWithMD5 "hmacWithMD5"
+#define NID_hmacWithMD5 797
+#define OBJ_hmacWithMD5 1L, 2L, 840L, 113549L, 2L, 6L
+
+#define LN_hmacWithSHA224 "hmacWithSHA224"
+#define NID_hmacWithSHA224 798
+#define OBJ_hmacWithSHA224 1L, 2L, 840L, 113549L, 2L, 8L
+
+#define LN_hmacWithSHA256 "hmacWithSHA256"
+#define NID_hmacWithSHA256 799
+#define OBJ_hmacWithSHA256 1L, 2L, 840L, 113549L, 2L, 9L
+
+#define LN_hmacWithSHA384 "hmacWithSHA384"
+#define NID_hmacWithSHA384 800
+#define OBJ_hmacWithSHA384 1L, 2L, 840L, 113549L, 2L, 10L
+
+#define LN_hmacWithSHA512 "hmacWithSHA512"
+#define NID_hmacWithSHA512 801
+#define OBJ_hmacWithSHA512 1L, 2L, 840L, 113549L, 2L, 11L
+
+#define SN_dsa_with_SHA224 "dsa_with_SHA224"
+#define NID_dsa_with_SHA224 802
+#define OBJ_dsa_with_SHA224 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 1L
+
+#define SN_dsa_with_SHA256 "dsa_with_SHA256"
+#define NID_dsa_with_SHA256 803
+#define OBJ_dsa_with_SHA256 2L, 16L, 840L, 1L, 101L, 3L, 4L, 3L, 2L
+
+#define SN_whirlpool "whirlpool"
+#define NID_whirlpool 804
+#define OBJ_whirlpool 1L, 0L, 10118L, 3L, 0L, 55L
+
+#define SN_cryptopro "cryptopro"
+#define NID_cryptopro 805
+#define OBJ_cryptopro 1L, 2L, 643L, 2L, 2L
+
+#define SN_cryptocom "cryptocom"
+#define NID_cryptocom 806
+#define OBJ_cryptocom 1L, 2L, 643L, 2L, 9L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001 \
+  "id-GostR3411-94-with-GostR3410-2001"
+#define LN_id_GostR3411_94_with_GostR3410_2001 \
+  "GOST R 34.11-94 with GOST R 34.10-2001"
+#define NID_id_GostR3411_94_with_GostR3410_2001 807
+#define OBJ_id_GostR3411_94_with_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_94 "id-GostR3411-94-with-GostR3410-94"
+#define LN_id_GostR3411_94_with_GostR3410_94 \
+  "GOST R 34.11-94 with GOST R 34.10-94"
+#define NID_id_GostR3411_94_with_GostR3410_94 808
+#define OBJ_id_GostR3411_94_with_GostR3410_94 1L, 2L, 643L, 2L, 2L, 4L
+
+#define SN_id_GostR3411_94 "md_gost94"
+#define LN_id_GostR3411_94 "GOST R 34.11-94"
+#define NID_id_GostR3411_94 809
+#define OBJ_id_GostR3411_94 1L, 2L, 643L, 2L, 2L, 9L
+
+#define SN_id_HMACGostR3411_94 "id-HMACGostR3411-94"
+#define LN_id_HMACGostR3411_94 "HMAC GOST 34.11-94"
+#define NID_id_HMACGostR3411_94 810
+#define OBJ_id_HMACGostR3411_94 1L, 2L, 643L, 2L, 2L, 10L
+
+#define SN_id_GostR3410_2001 "gost2001"
+#define LN_id_GostR3410_2001 "GOST R 34.10-2001"
+#define NID_id_GostR3410_2001 811
+#define OBJ_id_GostR3410_2001 1L, 2L, 643L, 2L, 2L, 19L
+
+#define SN_id_GostR3410_94 "gost94"
+#define LN_id_GostR3410_94 "GOST R 34.10-94"
+#define NID_id_GostR3410_94 812
+#define OBJ_id_GostR3410_94 1L, 2L, 643L, 2L, 2L, 20L
+
+#define SN_id_Gost28147_89 "gost89"
+#define LN_id_Gost28147_89 "GOST 28147-89"
+#define NID_id_Gost28147_89 813
+#define OBJ_id_Gost28147_89 1L, 2L, 643L, 2L, 2L, 21L
+
+#define SN_gost89_cnt "gost89-cnt"
+#define NID_gost89_cnt 814
+
+#define SN_id_Gost28147_89_MAC "gost-mac"
+#define LN_id_Gost28147_89_MAC "GOST 28147-89 MAC"
+#define NID_id_Gost28147_89_MAC 815
+#define OBJ_id_Gost28147_89_MAC 1L, 2L, 643L, 2L, 2L, 22L
+
+#define SN_id_GostR3411_94_prf "prf-gostr3411-94"
+#define LN_id_GostR3411_94_prf "GOST R 34.11-94 PRF"
+#define NID_id_GostR3411_94_prf 816
+#define OBJ_id_GostR3411_94_prf 1L, 2L, 643L, 2L, 2L, 23L
+
+#define SN_id_GostR3410_2001DH "id-GostR3410-2001DH"
+#define LN_id_GostR3410_2001DH "GOST R 34.10-2001 DH"
+#define NID_id_GostR3410_2001DH 817
+#define OBJ_id_GostR3410_2001DH 1L, 2L, 643L, 2L, 2L, 98L
+
+#define SN_id_GostR3410_94DH "id-GostR3410-94DH"
+#define LN_id_GostR3410_94DH "GOST R 34.10-94 DH"
+#define NID_id_GostR3410_94DH 818
+#define OBJ_id_GostR3410_94DH 1L, 2L, 643L, 2L, 2L, 99L
+
+#define SN_id_Gost28147_89_CryptoPro_KeyMeshing \
+  "id-Gost28147-89-CryptoPro-KeyMeshing"
+#define NID_id_Gost28147_89_CryptoPro_KeyMeshing 819
+#define OBJ_id_Gost28147_89_CryptoPro_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 1L
+
+#define SN_id_Gost28147_89_None_KeyMeshing "id-Gost28147-89-None-KeyMeshing"
+#define NID_id_Gost28147_89_None_KeyMeshing 820
+#define OBJ_id_Gost28147_89_None_KeyMeshing 1L, 2L, 643L, 2L, 2L, 14L, 0L
+
+#define SN_id_GostR3411_94_TestParamSet "id-GostR3411-94-TestParamSet"
+#define NID_id_GostR3411_94_TestParamSet 821
+#define OBJ_id_GostR3411_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 30L, 0L
+
+#define SN_id_GostR3411_94_CryptoProParamSet "id-GostR3411-94-CryptoProParamSet"
+#define NID_id_GostR3411_94_CryptoProParamSet 822
+#define OBJ_id_GostR3411_94_CryptoProParamSet 1L, 2L, 643L, 2L, 2L, 30L, 1L
+
+#define SN_id_Gost28147_89_TestParamSet "id-Gost28147-89-TestParamSet"
+#define NID_id_Gost28147_89_TestParamSet 823
+#define OBJ_id_Gost28147_89_TestParamSet 1L, 2L, 643L, 2L, 2L, 31L, 0L
+
+#define SN_id_Gost28147_89_CryptoPro_A_ParamSet \
+  "id-Gost28147-89-CryptoPro-A-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_A_ParamSet 824
+#define OBJ_id_Gost28147_89_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 1L
+
+#define SN_id_Gost28147_89_CryptoPro_B_ParamSet \
+  "id-Gost28147-89-CryptoPro-B-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_B_ParamSet 825
+#define OBJ_id_Gost28147_89_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 2L
+
+#define SN_id_Gost28147_89_CryptoPro_C_ParamSet \
+  "id-Gost28147-89-CryptoPro-C-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_C_ParamSet 826
+#define OBJ_id_Gost28147_89_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 3L
+
+#define SN_id_Gost28147_89_CryptoPro_D_ParamSet \
+  "id-Gost28147-89-CryptoPro-D-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_D_ParamSet 827
+#define OBJ_id_Gost28147_89_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 31L, 4L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet 828
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 5L
+
+#define SN_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  "id-Gost28147-89-CryptoPro-Oscar-1-0-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet 829
+#define OBJ_id_Gost28147_89_CryptoPro_Oscar_1_0_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 6L
+
+#define SN_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  "id-Gost28147-89-CryptoPro-RIC-1-ParamSet"
+#define NID_id_Gost28147_89_CryptoPro_RIC_1_ParamSet 830
+#define OBJ_id_Gost28147_89_CryptoPro_RIC_1_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 31L, 7L
+
+#define SN_id_GostR3410_94_TestParamSet "id-GostR3410-94-TestParamSet"
+#define NID_id_GostR3410_94_TestParamSet 831
+#define OBJ_id_GostR3410_94_TestParamSet 1L, 2L, 643L, 2L, 2L, 32L, 0L
+
+#define SN_id_GostR3410_94_CryptoPro_A_ParamSet \
+  "id-GostR3410-94-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_A_ParamSet 832
+#define OBJ_id_GostR3410_94_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_B_ParamSet \
+  "id-GostR3410-94-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_B_ParamSet 833
+#define OBJ_id_GostR3410_94_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 3L
+
+#define SN_id_GostR3410_94_CryptoPro_C_ParamSet \
+  "id-GostR3410-94-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_C_ParamSet 834
+#define OBJ_id_GostR3410_94_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 4L
+
+#define SN_id_GostR3410_94_CryptoPro_D_ParamSet \
+  "id-GostR3410-94-CryptoPro-D-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_D_ParamSet 835
+#define OBJ_id_GostR3410_94_CryptoPro_D_ParamSet 1L, 2L, 643L, 2L, 2L, 32L, 5L
+
+#define SN_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchA_ParamSet 836
+#define OBJ_id_GostR3410_94_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 1L
+
+#define SN_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchB_ParamSet 837
+#define OBJ_id_GostR3410_94_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 2L
+
+#define SN_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  "id-GostR3410-94-CryptoPro-XchC-ParamSet"
+#define NID_id_GostR3410_94_CryptoPro_XchC_ParamSet 838
+#define OBJ_id_GostR3410_94_CryptoPro_XchC_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 33L, 3L
+
+#define SN_id_GostR3410_2001_TestParamSet "id-GostR3410-2001-TestParamSet"
+#define NID_id_GostR3410_2001_TestParamSet 839
+#define OBJ_id_GostR3410_2001_TestParamSet 1L, 2L, 643L, 2L, 2L, 35L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_A_ParamSet \
+  "id-GostR3410-2001-CryptoPro-A-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_A_ParamSet 840
+#define OBJ_id_GostR3410_2001_CryptoPro_A_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 1L
+
+#define SN_id_GostR3410_2001_CryptoPro_B_ParamSet \
+  "id-GostR3410-2001-CryptoPro-B-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_B_ParamSet 841
+#define OBJ_id_GostR3410_2001_CryptoPro_B_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 2L
+
+#define SN_id_GostR3410_2001_CryptoPro_C_ParamSet \
+  "id-GostR3410-2001-CryptoPro-C-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_C_ParamSet 842
+#define OBJ_id_GostR3410_2001_CryptoPro_C_ParamSet 1L, 2L, 643L, 2L, 2L, 35L, 3L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchA-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet 843
+#define OBJ_id_GostR3410_2001_CryptoPro_XchA_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 0L
+
+#define SN_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  "id-GostR3410-2001-CryptoPro-XchB-ParamSet"
+#define NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet 844
+#define OBJ_id_GostR3410_2001_CryptoPro_XchB_ParamSet \
+  1L, 2L, 643L, 2L, 2L, 36L, 1L
+
+#define SN_id_GostR3410_94_a "id-GostR3410-94-a"
+#define NID_id_GostR3410_94_a 845
+#define OBJ_id_GostR3410_94_a 1L, 2L, 643L, 2L, 2L, 20L, 1L
+
+#define SN_id_GostR3410_94_aBis "id-GostR3410-94-aBis"
+#define NID_id_GostR3410_94_aBis 846
+#define OBJ_id_GostR3410_94_aBis 1L, 2L, 643L, 2L, 2L, 20L, 2L
+
+#define SN_id_GostR3410_94_b "id-GostR3410-94-b"
+#define NID_id_GostR3410_94_b 847
+#define OBJ_id_GostR3410_94_b 1L, 2L, 643L, 2L, 2L, 20L, 3L
+
+#define SN_id_GostR3410_94_bBis "id-GostR3410-94-bBis"
+#define NID_id_GostR3410_94_bBis 848
+#define OBJ_id_GostR3410_94_bBis 1L, 2L, 643L, 2L, 2L, 20L, 4L
+
+#define SN_id_Gost28147_89_cc "id-Gost28147-89-cc"
+#define LN_id_Gost28147_89_cc "GOST 28147-89 Cryptocom ParamSet"
+#define NID_id_Gost28147_89_cc 849
+#define OBJ_id_Gost28147_89_cc 1L, 2L, 643L, 2L, 9L, 1L, 6L, 1L
+
+#define SN_id_GostR3410_94_cc "gost94cc"
+#define LN_id_GostR3410_94_cc "GOST 34.10-94 Cryptocom"
+#define NID_id_GostR3410_94_cc 850
+#define OBJ_id_GostR3410_94_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 3L
+
+#define SN_id_GostR3410_2001_cc "gost2001cc"
+#define LN_id_GostR3410_2001_cc "GOST 34.10-2001 Cryptocom"
+#define NID_id_GostR3410_2001_cc 851
+#define OBJ_id_GostR3410_2001_cc 1L, 2L, 643L, 2L, 9L, 1L, 5L, 4L
+
+#define SN_id_GostR3411_94_with_GostR3410_94_cc \
+  "id-GostR3411-94-with-GostR3410-94-cc"
+#define LN_id_GostR3411_94_with_GostR3410_94_cc \
+  "GOST R 34.11-94 with GOST R 34.10-94 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_94_cc 852
+#define OBJ_id_GostR3411_94_with_GostR3410_94_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 3L
+
+#define SN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "id-GostR3411-94-with-GostR3410-2001-cc"
+#define LN_id_GostR3411_94_with_GostR3410_2001_cc \
+  "GOST R 34.11-94 with GOST R 34.10-2001 Cryptocom"
+#define NID_id_GostR3411_94_with_GostR3410_2001_cc 853
+#define OBJ_id_GostR3411_94_with_GostR3410_2001_cc \
+  1L, 2L, 643L, 2L, 9L, 1L, 3L, 4L
+
+#define SN_id_GostR3410_2001_ParamSet_cc "id-GostR3410-2001-ParamSet-cc"
+#define LN_id_GostR3410_2001_ParamSet_cc \
+  "GOST R 3410-2001 Parameter Set Cryptocom"
+#define NID_id_GostR3410_2001_ParamSet_cc 854
+#define OBJ_id_GostR3410_2001_ParamSet_cc 1L, 2L, 643L, 2L, 9L, 1L, 8L, 1L
+
+#define SN_hmac "HMAC"
+#define LN_hmac "hmac"
+#define NID_hmac 855
+
+#define SN_LocalKeySet "LocalKeySet"
+#define LN_LocalKeySet "Microsoft Local Key set"
+#define NID_LocalKeySet 856
+#define OBJ_LocalKeySet 1L, 3L, 6L, 1L, 4L, 1L, 311L, 17L, 2L
+
+#define SN_freshest_crl "freshestCRL"
+#define LN_freshest_crl "X509v3 Freshest CRL"
+#define NID_freshest_crl 857
+#define OBJ_freshest_crl 2L, 5L, 29L, 46L
+
+#define SN_id_on_permanentIdentifier "id-on-permanentIdentifier"
+#define LN_id_on_permanentIdentifier "Permanent Identifier"
+#define NID_id_on_permanentIdentifier 858
+#define OBJ_id_on_permanentIdentifier 1L, 3L, 6L, 1L, 5L, 5L, 7L, 8L, 3L
+
+#define LN_searchGuide "searchGuide"
+#define NID_searchGuide 859
+#define OBJ_searchGuide 2L, 5L, 4L, 14L
+
+#define LN_businessCategory "businessCategory"
+#define NID_businessCategory 860
+#define OBJ_businessCategory 2L, 5L, 4L, 15L
+
+#define LN_postalAddress "postalAddress"
+#define NID_postalAddress 861
+#define OBJ_postalAddress 2L, 5L, 4L, 16L
+
+#define LN_postOfficeBox "postOfficeBox"
+#define NID_postOfficeBox 862
+#define OBJ_postOfficeBox 2L, 5L, 4L, 18L
+
+#define LN_physicalDeliveryOfficeName "physicalDeliveryOfficeName"
+#define NID_physicalDeliveryOfficeName 863
+#define OBJ_physicalDeliveryOfficeName 2L, 5L, 4L, 19L
+
+#define LN_telephoneNumber "telephoneNumber"
+#define NID_telephoneNumber 864
+#define OBJ_telephoneNumber 2L, 5L, 4L, 20L
+
+#define LN_telexNumber "telexNumber"
+#define NID_telexNumber 865
+#define OBJ_telexNumber 2L, 5L, 4L, 21L
+
+#define LN_teletexTerminalIdentifier "teletexTerminalIdentifier"
+#define NID_teletexTerminalIdentifier 866
+#define OBJ_teletexTerminalIdentifier 2L, 5L, 4L, 22L
+
+#define LN_facsimileTelephoneNumber "facsimileTelephoneNumber"
+#define NID_facsimileTelephoneNumber 867
+#define OBJ_facsimileTelephoneNumber 2L, 5L, 4L, 23L
+
+#define LN_x121Address "x121Address"
+#define NID_x121Address 868
+#define OBJ_x121Address 2L, 5L, 4L, 24L
+
+#define LN_internationaliSDNNumber "internationaliSDNNumber"
+#define NID_internationaliSDNNumber 869
+#define OBJ_internationaliSDNNumber 2L, 5L, 4L, 25L
+
+#define LN_registeredAddress "registeredAddress"
+#define NID_registeredAddress 870
+#define OBJ_registeredAddress 2L, 5L, 4L, 26L
+
+#define LN_destinationIndicator "destinationIndicator"
+#define NID_destinationIndicator 871
+#define OBJ_destinationIndicator 2L, 5L, 4L, 27L
+
+#define LN_preferredDeliveryMethod "preferredDeliveryMethod"
+#define NID_preferredDeliveryMethod 872
+#define OBJ_preferredDeliveryMethod 2L, 5L, 4L, 28L
+
+#define LN_presentationAddress "presentationAddress"
+#define NID_presentationAddress 873
+#define OBJ_presentationAddress 2L, 5L, 4L, 29L
+
+#define LN_supportedApplicationContext "supportedApplicationContext"
+#define NID_supportedApplicationContext 874
+#define OBJ_supportedApplicationContext 2L, 5L, 4L, 30L
+
+#define SN_member "member"
+#define NID_member 875
+#define OBJ_member 2L, 5L, 4L, 31L
+
+#define SN_owner "owner"
+#define NID_owner 876
+#define OBJ_owner 2L, 5L, 4L, 32L
+
+#define LN_roleOccupant "roleOccupant"
+#define NID_roleOccupant 877
+#define OBJ_roleOccupant 2L, 5L, 4L, 33L
+
+#define SN_seeAlso "seeAlso"
+#define NID_seeAlso 878
+#define OBJ_seeAlso 2L, 5L, 4L, 34L
+
+#define LN_userPassword "userPassword"
+#define NID_userPassword 879
+#define OBJ_userPassword 2L, 5L, 4L, 35L
+
+#define LN_userCertificate "userCertificate"
+#define NID_userCertificate 880
+#define OBJ_userCertificate 2L, 5L, 4L, 36L
+
+#define LN_cACertificate "cACertificate"
+#define NID_cACertificate 881
+#define OBJ_cACertificate 2L, 5L, 4L, 37L
+
+#define LN_authorityRevocationList "authorityRevocationList"
+#define NID_authorityRevocationList 882
+#define OBJ_authorityRevocationList 2L, 5L, 4L, 38L
+
+#define LN_certificateRevocationList "certificateRevocationList"
+#define NID_certificateRevocationList 883
+#define OBJ_certificateRevocationList 2L, 5L, 4L, 39L
+
+#define LN_crossCertificatePair "crossCertificatePair"
+#define NID_crossCertificatePair 884
+#define OBJ_crossCertificatePair 2L, 5L, 4L, 40L
+
+#define LN_enhancedSearchGuide "enhancedSearchGuide"
+#define NID_enhancedSearchGuide 885
+#define OBJ_enhancedSearchGuide 2L, 5L, 4L, 47L
+
+#define LN_protocolInformation "protocolInformation"
+#define NID_protocolInformation 886
+#define OBJ_protocolInformation 2L, 5L, 4L, 48L
+
+#define LN_distinguishedName "distinguishedName"
+#define NID_distinguishedName 887
+#define OBJ_distinguishedName 2L, 5L, 4L, 49L
+
+#define LN_uniqueMember "uniqueMember"
+#define NID_uniqueMember 888
+#define OBJ_uniqueMember 2L, 5L, 4L, 50L
+
+#define LN_houseIdentifier "houseIdentifier"
+#define NID_houseIdentifier 889
+#define OBJ_houseIdentifier 2L, 5L, 4L, 51L
+
+#define LN_supportedAlgorithms "supportedAlgorithms"
+#define NID_supportedAlgorithms 890
+#define OBJ_supportedAlgorithms 2L, 5L, 4L, 52L
+
+#define LN_deltaRevocationList "deltaRevocationList"
+#define NID_deltaRevocationList 891
+#define OBJ_deltaRevocationList 2L, 5L, 4L, 53L
+
+#define SN_dmdName "dmdName"
+#define NID_dmdName 892
+#define OBJ_dmdName 2L, 5L, 4L, 54L
+
+#define SN_id_alg_PWRI_KEK "id-alg-PWRI-KEK"
+#define NID_id_alg_PWRI_KEK 893
+#define OBJ_id_alg_PWRI_KEK 1L, 2L, 840L, 113549L, 1L, 9L, 16L, 3L, 9L
+
+#define SN_cmac "CMAC"
+#define LN_cmac "cmac"
+#define NID_cmac 894
+
+#define SN_aes_128_gcm "id-aes128-GCM"
+#define LN_aes_128_gcm "aes-128-gcm"
+#define NID_aes_128_gcm 895
+#define OBJ_aes_128_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 6L
+
+#define SN_aes_128_ccm "id-aes128-CCM"
+#define LN_aes_128_ccm "aes-128-ccm"
+#define NID_aes_128_ccm 896
+#define OBJ_aes_128_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 7L
+
+#define SN_id_aes128_wrap_pad "id-aes128-wrap-pad"
+#define NID_id_aes128_wrap_pad 897
+#define OBJ_id_aes128_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 8L
+
+#define SN_aes_192_gcm "id-aes192-GCM"
+#define LN_aes_192_gcm "aes-192-gcm"
+#define NID_aes_192_gcm 898
+#define OBJ_aes_192_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 26L
+
+#define SN_aes_192_ccm "id-aes192-CCM"
+#define LN_aes_192_ccm "aes-192-ccm"
+#define NID_aes_192_ccm 899
+#define OBJ_aes_192_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 27L
+
+#define SN_id_aes192_wrap_pad "id-aes192-wrap-pad"
+#define NID_id_aes192_wrap_pad 900
+#define OBJ_id_aes192_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 28L
+
+#define SN_aes_256_gcm "id-aes256-GCM"
+#define LN_aes_256_gcm "aes-256-gcm"
+#define NID_aes_256_gcm 901
+#define OBJ_aes_256_gcm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 46L
+
+#define SN_aes_256_ccm "id-aes256-CCM"
+#define LN_aes_256_ccm "aes-256-ccm"
+#define NID_aes_256_ccm 902
+#define OBJ_aes_256_ccm 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 47L
+
+#define SN_id_aes256_wrap_pad "id-aes256-wrap-pad"
+#define NID_id_aes256_wrap_pad 903
+#define OBJ_id_aes256_wrap_pad 2L, 16L, 840L, 1L, 101L, 3L, 4L, 1L, 48L
+
+#define SN_aes_128_ctr "AES-128-CTR"
+#define LN_aes_128_ctr "aes-128-ctr"
+#define NID_aes_128_ctr 904
+
+#define SN_aes_192_ctr "AES-192-CTR"
+#define LN_aes_192_ctr "aes-192-ctr"
+#define NID_aes_192_ctr 905
+
+#define SN_aes_256_ctr "AES-256-CTR"
+#define LN_aes_256_ctr "aes-256-ctr"
+#define NID_aes_256_ctr 906
+
+#define SN_id_camellia128_wrap "id-camellia128-wrap"
+#define NID_id_camellia128_wrap 907
+#define OBJ_id_camellia128_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 2L
+
+#define SN_id_camellia192_wrap "id-camellia192-wrap"
+#define NID_id_camellia192_wrap 908
+#define OBJ_id_camellia192_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 3L
+
+#define SN_id_camellia256_wrap "id-camellia256-wrap"
+#define NID_id_camellia256_wrap 909
+#define OBJ_id_camellia256_wrap 1L, 2L, 392L, 200011L, 61L, 1L, 1L, 3L, 4L
+
+#define SN_anyExtendedKeyUsage "anyExtendedKeyUsage"
+#define LN_anyExtendedKeyUsage "Any Extended Key Usage"
+#define NID_anyExtendedKeyUsage 910
+#define OBJ_anyExtendedKeyUsage 2L, 5L, 29L, 37L, 0L
+
+#define SN_mgf1 "MGF1"
+#define LN_mgf1 "mgf1"
+#define NID_mgf1 911
+#define OBJ_mgf1 1L, 2L, 840L, 113549L, 1L, 1L, 8L
+
+#define SN_rsassaPss "RSASSA-PSS"
+#define LN_rsassaPss "rsassaPss"
+#define NID_rsassaPss 912
+#define OBJ_rsassaPss 1L, 2L, 840L, 113549L, 1L, 1L, 10L
+
+#define SN_aes_128_xts "AES-128-XTS"
+#define LN_aes_128_xts "aes-128-xts"
+#define NID_aes_128_xts 913
+
+#define SN_aes_256_xts "AES-256-XTS"
+#define LN_aes_256_xts "aes-256-xts"
+#define NID_aes_256_xts 914
+
+#define SN_rc4_hmac_md5 "RC4-HMAC-MD5"
+#define LN_rc4_hmac_md5 "rc4-hmac-md5"
+#define NID_rc4_hmac_md5 915
+
+#define SN_aes_128_cbc_hmac_sha1 "AES-128-CBC-HMAC-SHA1"
+#define LN_aes_128_cbc_hmac_sha1 "aes-128-cbc-hmac-sha1"
+#define NID_aes_128_cbc_hmac_sha1 916
+
+#define SN_aes_192_cbc_hmac_sha1 "AES-192-CBC-HMAC-SHA1"
+#define LN_aes_192_cbc_hmac_sha1 "aes-192-cbc-hmac-sha1"
+#define NID_aes_192_cbc_hmac_sha1 917
+
+#define SN_aes_256_cbc_hmac_sha1 "AES-256-CBC-HMAC-SHA1"
+#define LN_aes_256_cbc_hmac_sha1 "aes-256-cbc-hmac-sha1"
+#define NID_aes_256_cbc_hmac_sha1 918
+
+#define SN_rsaesOaep "RSAES-OAEP"
+#define LN_rsaesOaep "rsaesOaep"
+#define NID_rsaesOaep 919
+#define OBJ_rsaesOaep 1L, 2L, 840L, 113549L, 1L, 1L, 7L
+
+#define SN_dhpublicnumber "dhpublicnumber"
+#define LN_dhpublicnumber "X9.42 DH"
+#define NID_dhpublicnumber 920
+#define OBJ_dhpublicnumber 1L, 2L, 840L, 10046L, 2L, 1L
+
+#define SN_brainpoolP160r1 "brainpoolP160r1"
+#define NID_brainpoolP160r1 921
+#define OBJ_brainpoolP160r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 1L
+
+#define SN_brainpoolP160t1 "brainpoolP160t1"
+#define NID_brainpoolP160t1 922
+#define OBJ_brainpoolP160t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 2L
+
+#define SN_brainpoolP192r1 "brainpoolP192r1"
+#define NID_brainpoolP192r1 923
+#define OBJ_brainpoolP192r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 3L
+
+#define SN_brainpoolP192t1 "brainpoolP192t1"
+#define NID_brainpoolP192t1 924
+#define OBJ_brainpoolP192t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 4L
+
+#define SN_brainpoolP224r1 "brainpoolP224r1"
+#define NID_brainpoolP224r1 925
+#define OBJ_brainpoolP224r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 5L
+
+#define SN_brainpoolP224t1 "brainpoolP224t1"
+#define NID_brainpoolP224t1 926
+#define OBJ_brainpoolP224t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 6L
+
+#define SN_brainpoolP256r1 "brainpoolP256r1"
+#define NID_brainpoolP256r1 927
+#define OBJ_brainpoolP256r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 7L
+
+#define SN_brainpoolP256t1 "brainpoolP256t1"
+#define NID_brainpoolP256t1 928
+#define OBJ_brainpoolP256t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 8L
+
+#define SN_brainpoolP320r1 "brainpoolP320r1"
+#define NID_brainpoolP320r1 929
+#define OBJ_brainpoolP320r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 9L
+
+#define SN_brainpoolP320t1 "brainpoolP320t1"
+#define NID_brainpoolP320t1 930
+#define OBJ_brainpoolP320t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 10L
+
+#define SN_brainpoolP384r1 "brainpoolP384r1"
+#define NID_brainpoolP384r1 931
+#define OBJ_brainpoolP384r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 11L
+
+#define SN_brainpoolP384t1 "brainpoolP384t1"
+#define NID_brainpoolP384t1 932
+#define OBJ_brainpoolP384t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 12L
+
+#define SN_brainpoolP512r1 "brainpoolP512r1"
+#define NID_brainpoolP512r1 933
+#define OBJ_brainpoolP512r1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 13L
+
+#define SN_brainpoolP512t1 "brainpoolP512t1"
+#define NID_brainpoolP512t1 934
+#define OBJ_brainpoolP512t1 1L, 3L, 36L, 3L, 3L, 2L, 8L, 1L, 1L, 14L
+
+#define SN_pSpecified "PSPECIFIED"
+#define LN_pSpecified "pSpecified"
+#define NID_pSpecified 935
+#define OBJ_pSpecified 1L, 2L, 840L, 113549L, 1L, 1L, 9L
+
+#define SN_dhSinglePass_stdDH_sha1kdf_scheme "dhSinglePass-stdDH-sha1kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha1kdf_scheme 936
+#define OBJ_dhSinglePass_stdDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 2L
+
+#define SN_dhSinglePass_stdDH_sha224kdf_scheme \
+  "dhSinglePass-stdDH-sha224kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha224kdf_scheme 937
+#define OBJ_dhSinglePass_stdDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 11L, 0L
+
+#define SN_dhSinglePass_stdDH_sha256kdf_scheme \
+  "dhSinglePass-stdDH-sha256kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha256kdf_scheme 938
+#define OBJ_dhSinglePass_stdDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 11L, 1L
+
+#define SN_dhSinglePass_stdDH_sha384kdf_scheme \
+  "dhSinglePass-stdDH-sha384kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha384kdf_scheme 939
+#define OBJ_dhSinglePass_stdDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 11L, 2L
+
+#define SN_dhSinglePass_stdDH_sha512kdf_scheme \
+  "dhSinglePass-stdDH-sha512kdf-scheme"
+#define NID_dhSinglePass_stdDH_sha512kdf_scheme 940
+#define OBJ_dhSinglePass_stdDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 11L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  "dhSinglePass-cofactorDH-sha1kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha1kdf_scheme 941
+#define OBJ_dhSinglePass_cofactorDH_sha1kdf_scheme \
+  1L, 3L, 133L, 16L, 840L, 63L, 0L, 3L
+
+#define SN_dhSinglePass_cofactorDH_sha224kdf_scheme \
+  "dhSinglePass-cofactorDH-sha224kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha224kdf_scheme 942
+#define OBJ_dhSinglePass_cofactorDH_sha224kdf_scheme 1L, 3L, 132L, 1L, 14L, 0L
+
+#define SN_dhSinglePass_cofactorDH_sha256kdf_scheme \
+  "dhSinglePass-cofactorDH-sha256kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha256kdf_scheme 943
+#define OBJ_dhSinglePass_cofactorDH_sha256kdf_scheme 1L, 3L, 132L, 1L, 14L, 1L
+
+#define SN_dhSinglePass_cofactorDH_sha384kdf_scheme \
+  "dhSinglePass-cofactorDH-sha384kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha384kdf_scheme 944
+#define OBJ_dhSinglePass_cofactorDH_sha384kdf_scheme 1L, 3L, 132L, 1L, 14L, 2L
+
+#define SN_dhSinglePass_cofactorDH_sha512kdf_scheme \
+  "dhSinglePass-cofactorDH-sha512kdf-scheme"
+#define NID_dhSinglePass_cofactorDH_sha512kdf_scheme 945
+#define OBJ_dhSinglePass_cofactorDH_sha512kdf_scheme 1L, 3L, 132L, 1L, 14L, 3L
+
+#define SN_dh_std_kdf "dh-std-kdf"
+#define NID_dh_std_kdf 946
+
+#define SN_dh_cofactor_kdf "dh-cofactor-kdf"
+#define NID_dh_cofactor_kdf 947
+
+#define SN_X25519 "X25519"
+#define NID_X25519 948
+#define OBJ_X25519 1L, 3L, 101L, 110L
+
+#define SN_ED25519 "ED25519"
+#define NID_ED25519 949
+#define OBJ_ED25519 1L, 3L, 101L, 112L
+
+#define SN_chacha20_poly1305 "ChaCha20-Poly1305"
+#define LN_chacha20_poly1305 "chacha20-poly1305"
+#define NID_chacha20_poly1305 950
+
+#define SN_kx_rsa "KxRSA"
+#define LN_kx_rsa "kx-rsa"
+#define NID_kx_rsa 951
+
+#define SN_kx_ecdhe "KxECDHE"
+#define LN_kx_ecdhe "kx-ecdhe"
+#define NID_kx_ecdhe 952
+
+#define SN_kx_psk "KxPSK"
+#define LN_kx_psk "kx-psk"
+#define NID_kx_psk 953
+
+#define SN_auth_rsa "AuthRSA"
+#define LN_auth_rsa "auth-rsa"
+#define NID_auth_rsa 954
+
+#define SN_auth_ecdsa "AuthECDSA"
+#define LN_auth_ecdsa "auth-ecdsa"
+#define NID_auth_ecdsa 955
+
+#define SN_auth_psk "AuthPSK"
+#define LN_auth_psk "auth-psk"
+#define NID_auth_psk 956
+
+#define SN_kx_any "KxANY"
+#define LN_kx_any "kx-any"
+#define NID_kx_any 957
+
+#define SN_auth_any "AuthANY"
+#define LN_auth_any "auth-any"
+#define NID_auth_any 958
+
+#define SN_CECPQ2 "CECPQ2"
+#define NID_CECPQ2 959
+
+#define SN_ED448 "ED448"
+#define NID_ED448 960
+#define OBJ_ED448 1L, 3L, 101L, 113L
+
+#define SN_X448 "X448"
+#define NID_X448 961
+#define OBJ_X448 1L, 3L, 101L, 111L
+
+
+#if defined(__cplusplus)
+} /* extern C */
+#endif
+
+#endif /* OPENSSL_HEADER_NID_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h
new file mode 100644
index 0000000..41f3e9d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h	
@@ -0,0 +1,236 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_OBJ_H
+#define OPENSSL_HEADER_OBJ_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The objects library deals with the registration and indexing of ASN.1 object
+// identifiers. These values are often written as a dotted sequence of numbers,
+// e.g. 1.2.840.113549.1.9.16.3.9.
+//
+// Internally, OpenSSL likes to deal with these values by numbering them with
+// numbers called "nids". OpenSSL has a large, built-in database of common
+// object identifiers and also has both short and long names for them.
+//
+// This library provides functions for translating between object identifiers,
+// nids, short names and long names.
+//
+// The nid values should not be used outside of a single process: they are not
+// stable identifiers.
+
+
+// Basic operations.
+
+// OBJ_dup returns a duplicate copy of |obj| or NULL on allocation failure.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *obj);
+
+// OBJ_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b);
+
+// OBJ_get0_data returns a pointer to the DER representation of |obj|.
+OPENSSL_EXPORT const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj);
+
+// OBJ_length returns the length of the DER representation of |obj|.
+OPENSSL_EXPORT size_t OBJ_length(const ASN1_OBJECT *obj);
+
+
+// Looking up nids.
+
+// OBJ_obj2nid returns the nid corresponding to |obj|, or |NID_undef| if no
+// such object is known.
+OPENSSL_EXPORT int OBJ_obj2nid(const ASN1_OBJECT *obj);
+
+// OBJ_cbs2nid returns the nid corresponding to the DER data in |cbs|, or
+// |NID_undef| if no such object is known.
+OPENSSL_EXPORT int OBJ_cbs2nid(const CBS *cbs);
+
+// OBJ_sn2nid returns the nid corresponding to |short_name|, or |NID_undef| if
+// no such short name is known.
+OPENSSL_EXPORT int OBJ_sn2nid(const char *short_name);
+
+// OBJ_ln2nid returns the nid corresponding to |long_name|, or |NID_undef| if
+// no such long name is known.
+OPENSSL_EXPORT int OBJ_ln2nid(const char *long_name);
+
+// OBJ_txt2nid returns the nid corresponding to |s|, which may be a short name,
+// long name, or an ASCII string containing a dotted sequence of numbers. It
+// returns the nid or NID_undef if unknown.
+OPENSSL_EXPORT int OBJ_txt2nid(const char *s);
+
+
+// Getting information about nids.
+
+// OBJ_nid2obj returns the ASN1_OBJECT corresponding to |nid|, or NULL if |nid|
+// is unknown.
+OPENSSL_EXPORT const ASN1_OBJECT *OBJ_nid2obj(int nid);
+
+// OBJ_nid2sn returns the short name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2sn(int nid);
+
+// OBJ_nid2ln returns the long name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2ln(int nid);
+
+// OBJ_nid2cbb writes |nid| as an ASN.1 OBJECT IDENTIFIER to |out|. It returns
+// one on success or zero otherwise.
+OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid);
+
+
+// Dealing with textual representations of object identifiers.
+
+// OBJ_txt2obj returns an ASN1_OBJECT for the textual representation in |s|.
+// If |dont_search_names| is zero, then |s| will be matched against the long
+// and short names of a known objects to find a match. Otherwise |s| must
+// contain an ASCII string with a dotted sequence of numbers. The resulting
+// object need not be previously known. It returns a freshly allocated
+// |ASN1_OBJECT| or NULL on error.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names);
+
+// OBJ_obj2txt converts |obj| to a textual representation. If
+// |always_return_oid| is zero then |obj| will be matched against known objects
+// and the long (preferably) or short name will be used if found. Otherwise
+// |obj| will be converted into a dotted sequence of integers. If |out| is not
+// NULL, then at most |out_len| bytes of the textual form will be written
+// there. If |out_len| is at least one, then string written to |out| will
+// always be NUL terminated. It returns the number of characters that could
+// have been written, not including the final NUL, or -1 on error.
+OPENSSL_EXPORT int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+                               int always_return_oid);
+
+
+// Adding objects at runtime.
+
+// OBJ_create adds a known object and returns the nid of the new object, or
+// NID_undef on error.
+OPENSSL_EXPORT int OBJ_create(const char *oid, const char *short_name,
+                              const char *long_name);
+
+
+// Handling signature algorithm identifiers.
+//
+// Some NIDs (e.g. sha256WithRSAEncryption) specify both a digest algorithm and
+// a public key algorithm. The following functions map between pairs of digest
+// and public-key algorithms and the NIDs that specify their combination.
+//
+// Sometimes the combination NID leaves the digest unspecified (e.g.
+// rsassaPss). In these cases, the digest NID is |NID_undef|.
+
+// OBJ_find_sigid_algs finds the digest and public-key NIDs that correspond to
+// the signing algorithm |sign_nid|. If successful, it sets |*out_digest_nid|
+// and |*out_pkey_nid| and returns one. Otherwise it returns zero. Any of
+// |out_digest_nid| or |out_pkey_nid| can be NULL if the caller doesn't need
+// that output value.
+OPENSSL_EXPORT int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid,
+                                       int *out_pkey_nid);
+
+// OBJ_find_sigid_by_algs finds the signature NID that corresponds to the
+// combination of |digest_nid| and |pkey_nid|. If success, it sets
+// |*out_sign_nid| and returns one. Otherwise it returns zero. The
+// |out_sign_nid| argument can be NULL if the caller only wishes to learn
+// whether the combination is valid.
+OPENSSL_EXPORT int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid,
+                                          int pkey_nid);
+
+
+// Deprecated functions.
+
+typedef struct obj_name_st {
+  int type;
+  int alias;
+  const char *name;
+  const char *data;
+} OBJ_NAME;
+
+#define OBJ_NAME_TYPE_MD_METH 1
+#define OBJ_NAME_TYPE_CIPHER_METH 2
+
+// OBJ_NAME_do_all_sorted calls |callback| zero or more times, each time with
+// the name of a different primitive. If |type| is |OBJ_NAME_TYPE_MD_METH| then
+// the primitives will be hash functions, alternatively if |type| is
+// |OBJ_NAME_TYPE_CIPHER_METH| then the primitives will be ciphers or cipher
+// modes.
+//
+// This function is ill-specified and should never be used.
+OPENSSL_EXPORT void OBJ_NAME_do_all_sorted(
+    int type, void (*callback)(const OBJ_NAME *, void *arg), void *arg);
+
+// OBJ_NAME_do_all calls |OBJ_NAME_do_all_sorted|.
+OPENSSL_EXPORT void OBJ_NAME_do_all(int type, void (*callback)(const OBJ_NAME *,
+                                                               void *arg),
+                                    void *arg);
+
+// OBJ_cleanup does nothing.
+OPENSSL_EXPORT void OBJ_cleanup(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define OBJ_R_UNKNOWN_NID 100
+#define OBJ_R_INVALID_OID_STRING 101
+
+#endif  // OPENSSL_HEADER_OBJ_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.back
new file mode 100644
index 0000000..764188f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.back	
@@ -0,0 +1,236 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_OBJ_H
+#define OPENSSL_HEADER_OBJ_H
+
+#include <openssl/base.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The objects library deals with the registration and indexing of ASN.1 object
+// identifiers. These values are often written as a dotted sequence of numbers,
+// e.g. 1.2.840.113549.1.9.16.3.9.
+//
+// Internally, OpenSSL likes to deal with these values by numbering them with
+// numbers called "nids". OpenSSL has a large, built-in database of common
+// object identifiers and also has both short and long names for them.
+//
+// This library provides functions for translating between object identifiers,
+// nids, short names and long names.
+//
+// The nid values should not be used outside of a single process: they are not
+// stable identifiers.
+
+
+// Basic operations.
+
+// OBJ_dup returns a duplicate copy of |obj| or NULL on allocation failure.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *obj);
+
+// OBJ_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b);
+
+// OBJ_get0_data returns a pointer to the DER representation of |obj|.
+OPENSSL_EXPORT const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj);
+
+// OBJ_length returns the length of the DER representation of |obj|.
+OPENSSL_EXPORT size_t OBJ_length(const ASN1_OBJECT *obj);
+
+
+// Looking up nids.
+
+// OBJ_obj2nid returns the nid corresponding to |obj|, or |NID_undef| if no
+// such object is known.
+OPENSSL_EXPORT int OBJ_obj2nid(const ASN1_OBJECT *obj);
+
+// OBJ_cbs2nid returns the nid corresponding to the DER data in |cbs|, or
+// |NID_undef| if no such object is known.
+OPENSSL_EXPORT int OBJ_cbs2nid(const CBS *cbs);
+
+// OBJ_sn2nid returns the nid corresponding to |short_name|, or |NID_undef| if
+// no such short name is known.
+OPENSSL_EXPORT int OBJ_sn2nid(const char *short_name);
+
+// OBJ_ln2nid returns the nid corresponding to |long_name|, or |NID_undef| if
+// no such long name is known.
+OPENSSL_EXPORT int OBJ_ln2nid(const char *long_name);
+
+// OBJ_txt2nid returns the nid corresponding to |s|, which may be a short name,
+// long name, or an ASCII string containing a dotted sequence of numbers. It
+// returns the nid or NID_undef if unknown.
+OPENSSL_EXPORT int OBJ_txt2nid(const char *s);
+
+
+// Getting information about nids.
+
+// OBJ_nid2obj returns the ASN1_OBJECT corresponding to |nid|, or NULL if |nid|
+// is unknown.
+OPENSSL_EXPORT const ASN1_OBJECT *OBJ_nid2obj(int nid);
+
+// OBJ_nid2sn returns the short name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2sn(int nid);
+
+// OBJ_nid2ln returns the long name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2ln(int nid);
+
+// OBJ_nid2cbb writes |nid| as an ASN.1 OBJECT IDENTIFIER to |out|. It returns
+// one on success or zero otherwise.
+OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid);
+
+
+// Dealing with textual representations of object identifiers.
+
+// OBJ_txt2obj returns an ASN1_OBJECT for the textual representation in |s|.
+// If |dont_search_names| is zero, then |s| will be matched against the long
+// and short names of a known objects to find a match. Otherwise |s| must
+// contain an ASCII string with a dotted sequence of numbers. The resulting
+// object need not be previously known. It returns a freshly allocated
+// |ASN1_OBJECT| or NULL on error.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names);
+
+// OBJ_obj2txt converts |obj| to a textual representation. If
+// |always_return_oid| is zero then |obj| will be matched against known objects
+// and the long (preferably) or short name will be used if found. Otherwise
+// |obj| will be converted into a dotted sequence of integers. If |out| is not
+// NULL, then at most |out_len| bytes of the textual form will be written
+// there. If |out_len| is at least one, then string written to |out| will
+// always be NUL terminated. It returns the number of characters that could
+// have been written, not including the final NUL, or -1 on error.
+OPENSSL_EXPORT int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+                               int always_return_oid);
+
+
+// Adding objects at runtime.
+
+// OBJ_create adds a known object and returns the nid of the new object, or
+// NID_undef on error.
+OPENSSL_EXPORT int OBJ_create(const char *oid, const char *short_name,
+                              const char *long_name);
+
+
+// Handling signature algorithm identifiers.
+//
+// Some NIDs (e.g. sha256WithRSAEncryption) specify both a digest algorithm and
+// a public key algorithm. The following functions map between pairs of digest
+// and public-key algorithms and the NIDs that specify their combination.
+//
+// Sometimes the combination NID leaves the digest unspecified (e.g.
+// rsassaPss). In these cases, the digest NID is |NID_undef|.
+
+// OBJ_find_sigid_algs finds the digest and public-key NIDs that correspond to
+// the signing algorithm |sign_nid|. If successful, it sets |*out_digest_nid|
+// and |*out_pkey_nid| and returns one. Otherwise it returns zero. Any of
+// |out_digest_nid| or |out_pkey_nid| can be NULL if the caller doesn't need
+// that output value.
+OPENSSL_EXPORT int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid,
+                                       int *out_pkey_nid);
+
+// OBJ_find_sigid_by_algs finds the signature NID that corresponds to the
+// combination of |digest_nid| and |pkey_nid|. If success, it sets
+// |*out_sign_nid| and returns one. Otherwise it returns zero. The
+// |out_sign_nid| argument can be NULL if the caller only wishes to learn
+// whether the combination is valid.
+OPENSSL_EXPORT int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid,
+                                          int pkey_nid);
+
+
+// Deprecated functions.
+
+typedef struct obj_name_st {
+  int type;
+  int alias;
+  const char *name;
+  const char *data;
+} OBJ_NAME;
+
+#define OBJ_NAME_TYPE_MD_METH 1
+#define OBJ_NAME_TYPE_CIPHER_METH 2
+
+// OBJ_NAME_do_all_sorted calls |callback| zero or more times, each time with
+// the name of a different primitive. If |type| is |OBJ_NAME_TYPE_MD_METH| then
+// the primitives will be hash functions, alternatively if |type| is
+// |OBJ_NAME_TYPE_CIPHER_METH| then the primitives will be ciphers or cipher
+// modes.
+//
+// This function is ill-specified and should never be used.
+OPENSSL_EXPORT void OBJ_NAME_do_all_sorted(
+    int type, void (*callback)(const OBJ_NAME *, void *arg), void *arg);
+
+// OBJ_NAME_do_all calls |OBJ_NAME_do_all_sorted|.
+OPENSSL_EXPORT void OBJ_NAME_do_all(int type, void (*callback)(const OBJ_NAME *,
+                                                               void *arg),
+                                    void *arg);
+
+// OBJ_cleanup does nothing.
+OPENSSL_EXPORT void OBJ_cleanup(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define OBJ_R_UNKNOWN_NID 100
+#define OBJ_R_INVALID_OID_STRING 101
+
+#endif  // OPENSSL_HEADER_OBJ_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.grpc_back
new file mode 100644
index 0000000..764188f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj.h.grpc_back	
@@ -0,0 +1,236 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_OBJ_H
+#define OPENSSL_HEADER_OBJ_H
+
+#include <openssl/base.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/nid.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The objects library deals with the registration and indexing of ASN.1 object
+// identifiers. These values are often written as a dotted sequence of numbers,
+// e.g. 1.2.840.113549.1.9.16.3.9.
+//
+// Internally, OpenSSL likes to deal with these values by numbering them with
+// numbers called "nids". OpenSSL has a large, built-in database of common
+// object identifiers and also has both short and long names for them.
+//
+// This library provides functions for translating between object identifiers,
+// nids, short names and long names.
+//
+// The nid values should not be used outside of a single process: they are not
+// stable identifiers.
+
+
+// Basic operations.
+
+// OBJ_dup returns a duplicate copy of |obj| or NULL on allocation failure.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *obj);
+
+// OBJ_cmp returns a value less than, equal to or greater than zero if |a| is
+// less than, equal to or greater than |b|, respectively.
+OPENSSL_EXPORT int OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b);
+
+// OBJ_get0_data returns a pointer to the DER representation of |obj|.
+OPENSSL_EXPORT const uint8_t *OBJ_get0_data(const ASN1_OBJECT *obj);
+
+// OBJ_length returns the length of the DER representation of |obj|.
+OPENSSL_EXPORT size_t OBJ_length(const ASN1_OBJECT *obj);
+
+
+// Looking up nids.
+
+// OBJ_obj2nid returns the nid corresponding to |obj|, or |NID_undef| if no
+// such object is known.
+OPENSSL_EXPORT int OBJ_obj2nid(const ASN1_OBJECT *obj);
+
+// OBJ_cbs2nid returns the nid corresponding to the DER data in |cbs|, or
+// |NID_undef| if no such object is known.
+OPENSSL_EXPORT int OBJ_cbs2nid(const CBS *cbs);
+
+// OBJ_sn2nid returns the nid corresponding to |short_name|, or |NID_undef| if
+// no such short name is known.
+OPENSSL_EXPORT int OBJ_sn2nid(const char *short_name);
+
+// OBJ_ln2nid returns the nid corresponding to |long_name|, or |NID_undef| if
+// no such long name is known.
+OPENSSL_EXPORT int OBJ_ln2nid(const char *long_name);
+
+// OBJ_txt2nid returns the nid corresponding to |s|, which may be a short name,
+// long name, or an ASCII string containing a dotted sequence of numbers. It
+// returns the nid or NID_undef if unknown.
+OPENSSL_EXPORT int OBJ_txt2nid(const char *s);
+
+
+// Getting information about nids.
+
+// OBJ_nid2obj returns the ASN1_OBJECT corresponding to |nid|, or NULL if |nid|
+// is unknown.
+OPENSSL_EXPORT const ASN1_OBJECT *OBJ_nid2obj(int nid);
+
+// OBJ_nid2sn returns the short name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2sn(int nid);
+
+// OBJ_nid2ln returns the long name for |nid|, or NULL if |nid| is unknown.
+OPENSSL_EXPORT const char *OBJ_nid2ln(int nid);
+
+// OBJ_nid2cbb writes |nid| as an ASN.1 OBJECT IDENTIFIER to |out|. It returns
+// one on success or zero otherwise.
+OPENSSL_EXPORT int OBJ_nid2cbb(CBB *out, int nid);
+
+
+// Dealing with textual representations of object identifiers.
+
+// OBJ_txt2obj returns an ASN1_OBJECT for the textual representation in |s|.
+// If |dont_search_names| is zero, then |s| will be matched against the long
+// and short names of a known objects to find a match. Otherwise |s| must
+// contain an ASCII string with a dotted sequence of numbers. The resulting
+// object need not be previously known. It returns a freshly allocated
+// |ASN1_OBJECT| or NULL on error.
+OPENSSL_EXPORT ASN1_OBJECT *OBJ_txt2obj(const char *s, int dont_search_names);
+
+// OBJ_obj2txt converts |obj| to a textual representation. If
+// |always_return_oid| is zero then |obj| will be matched against known objects
+// and the long (preferably) or short name will be used if found. Otherwise
+// |obj| will be converted into a dotted sequence of integers. If |out| is not
+// NULL, then at most |out_len| bytes of the textual form will be written
+// there. If |out_len| is at least one, then string written to |out| will
+// always be NUL terminated. It returns the number of characters that could
+// have been written, not including the final NUL, or -1 on error.
+OPENSSL_EXPORT int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
+                               int always_return_oid);
+
+
+// Adding objects at runtime.
+
+// OBJ_create adds a known object and returns the nid of the new object, or
+// NID_undef on error.
+OPENSSL_EXPORT int OBJ_create(const char *oid, const char *short_name,
+                              const char *long_name);
+
+
+// Handling signature algorithm identifiers.
+//
+// Some NIDs (e.g. sha256WithRSAEncryption) specify both a digest algorithm and
+// a public key algorithm. The following functions map between pairs of digest
+// and public-key algorithms and the NIDs that specify their combination.
+//
+// Sometimes the combination NID leaves the digest unspecified (e.g.
+// rsassaPss). In these cases, the digest NID is |NID_undef|.
+
+// OBJ_find_sigid_algs finds the digest and public-key NIDs that correspond to
+// the signing algorithm |sign_nid|. If successful, it sets |*out_digest_nid|
+// and |*out_pkey_nid| and returns one. Otherwise it returns zero. Any of
+// |out_digest_nid| or |out_pkey_nid| can be NULL if the caller doesn't need
+// that output value.
+OPENSSL_EXPORT int OBJ_find_sigid_algs(int sign_nid, int *out_digest_nid,
+                                       int *out_pkey_nid);
+
+// OBJ_find_sigid_by_algs finds the signature NID that corresponds to the
+// combination of |digest_nid| and |pkey_nid|. If success, it sets
+// |*out_sign_nid| and returns one. Otherwise it returns zero. The
+// |out_sign_nid| argument can be NULL if the caller only wishes to learn
+// whether the combination is valid.
+OPENSSL_EXPORT int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid,
+                                          int pkey_nid);
+
+
+// Deprecated functions.
+
+typedef struct obj_name_st {
+  int type;
+  int alias;
+  const char *name;
+  const char *data;
+} OBJ_NAME;
+
+#define OBJ_NAME_TYPE_MD_METH 1
+#define OBJ_NAME_TYPE_CIPHER_METH 2
+
+// OBJ_NAME_do_all_sorted calls |callback| zero or more times, each time with
+// the name of a different primitive. If |type| is |OBJ_NAME_TYPE_MD_METH| then
+// the primitives will be hash functions, alternatively if |type| is
+// |OBJ_NAME_TYPE_CIPHER_METH| then the primitives will be ciphers or cipher
+// modes.
+//
+// This function is ill-specified and should never be used.
+OPENSSL_EXPORT void OBJ_NAME_do_all_sorted(
+    int type, void (*callback)(const OBJ_NAME *, void *arg), void *arg);
+
+// OBJ_NAME_do_all calls |OBJ_NAME_do_all_sorted|.
+OPENSSL_EXPORT void OBJ_NAME_do_all(int type, void (*callback)(const OBJ_NAME *,
+                                                               void *arg),
+                                    void *arg);
+
+// OBJ_cleanup does nothing.
+OPENSSL_EXPORT void OBJ_cleanup(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#define OBJ_R_UNKNOWN_NID 100
+#define OBJ_R_INVALID_OID_STRING 101
+
+#endif  // OPENSSL_HEADER_OBJ_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h
new file mode 100644
index 0000000..e7ccadc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "nid.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.back
new file mode 100644
index 0000000..e7ccadc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "nid.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.grpc_back
new file mode 100644
index 0000000..e7ccadc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/obj_mac.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "nid.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h
new file mode 100644
index 0000000..dd6556f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "obj.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.back
new file mode 100644
index 0000000..dd6556f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "obj.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.grpc_back
new file mode 100644
index 0000000..dd6556f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/objects.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "obj.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h
new file mode 100644
index 0000000..3c6ffd8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h	
@@ -0,0 +1,67 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#ifndef OPENSSL_HEADER_OPENSSLCONF_H
+#define OPENSSL_HEADER_OPENSSLCONF_H
+
+
+#define OPENSSL_NO_ASYNC
+#define OPENSSL_NO_BF
+#define OPENSSL_NO_BLAKE2
+#define OPENSSL_NO_BUF_FREELISTS
+#define OPENSSL_NO_CAMELLIA
+#define OPENSSL_NO_CAPIENG
+#define OPENSSL_NO_CAST
+#define OPENSSL_NO_CMS
+#define OPENSSL_NO_COMP
+#define OPENSSL_NO_CT
+#define OPENSSL_NO_DANE
+#define OPENSSL_NO_DEPRECATED
+#define OPENSSL_NO_DGRAM
+#define OPENSSL_NO_DYNAMIC_ENGINE
+#define OPENSSL_NO_EC_NISTP_64_GCC_128
+#define OPENSSL_NO_EC2M
+#define OPENSSL_NO_EGD
+#define OPENSSL_NO_ENGINE
+#define OPENSSL_NO_GMP
+#define OPENSSL_NO_GOST
+#define OPENSSL_NO_HEARTBEATS
+#define OPENSSL_NO_HW
+#define OPENSSL_NO_IDEA
+#define OPENSSL_NO_JPAKE
+#define OPENSSL_NO_KRB5
+#define OPENSSL_NO_MD2
+#define OPENSSL_NO_MDC2
+#define OPENSSL_NO_OCB
+#define OPENSSL_NO_OCSP
+#define OPENSSL_NO_RC2
+#define OPENSSL_NO_RC5
+#define OPENSSL_NO_RFC3779
+#define OPENSSL_NO_RIPEMD
+#define OPENSSL_NO_RMD160
+#define OPENSSL_NO_SCTP
+#define OPENSSL_NO_SEED
+#define OPENSSL_NO_SRP
+#define OPENSSL_NO_SSL2
+#define OPENSSL_NO_SSL3
+#define OPENSSL_NO_SSL3_METHOD
+#define OPENSSL_NO_STATIC_ENGINE
+#define OPENSSL_NO_STORE
+#define OPENSSL_NO_WHIRLPOOL
+
+
+#endif  // OPENSSL_HEADER_OPENSSLCONF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.back
new file mode 100644
index 0000000..3c6ffd8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.back	
@@ -0,0 +1,67 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#ifndef OPENSSL_HEADER_OPENSSLCONF_H
+#define OPENSSL_HEADER_OPENSSLCONF_H
+
+
+#define OPENSSL_NO_ASYNC
+#define OPENSSL_NO_BF
+#define OPENSSL_NO_BLAKE2
+#define OPENSSL_NO_BUF_FREELISTS
+#define OPENSSL_NO_CAMELLIA
+#define OPENSSL_NO_CAPIENG
+#define OPENSSL_NO_CAST
+#define OPENSSL_NO_CMS
+#define OPENSSL_NO_COMP
+#define OPENSSL_NO_CT
+#define OPENSSL_NO_DANE
+#define OPENSSL_NO_DEPRECATED
+#define OPENSSL_NO_DGRAM
+#define OPENSSL_NO_DYNAMIC_ENGINE
+#define OPENSSL_NO_EC_NISTP_64_GCC_128
+#define OPENSSL_NO_EC2M
+#define OPENSSL_NO_EGD
+#define OPENSSL_NO_ENGINE
+#define OPENSSL_NO_GMP
+#define OPENSSL_NO_GOST
+#define OPENSSL_NO_HEARTBEATS
+#define OPENSSL_NO_HW
+#define OPENSSL_NO_IDEA
+#define OPENSSL_NO_JPAKE
+#define OPENSSL_NO_KRB5
+#define OPENSSL_NO_MD2
+#define OPENSSL_NO_MDC2
+#define OPENSSL_NO_OCB
+#define OPENSSL_NO_OCSP
+#define OPENSSL_NO_RC2
+#define OPENSSL_NO_RC5
+#define OPENSSL_NO_RFC3779
+#define OPENSSL_NO_RIPEMD
+#define OPENSSL_NO_RMD160
+#define OPENSSL_NO_SCTP
+#define OPENSSL_NO_SEED
+#define OPENSSL_NO_SRP
+#define OPENSSL_NO_SSL2
+#define OPENSSL_NO_SSL3
+#define OPENSSL_NO_SSL3_METHOD
+#define OPENSSL_NO_STATIC_ENGINE
+#define OPENSSL_NO_STORE
+#define OPENSSL_NO_WHIRLPOOL
+
+
+#endif  // OPENSSL_HEADER_OPENSSLCONF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.grpc_back
new file mode 100644
index 0000000..3c6ffd8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslconf.h.grpc_back	
@@ -0,0 +1,67 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#ifndef OPENSSL_HEADER_OPENSSLCONF_H
+#define OPENSSL_HEADER_OPENSSLCONF_H
+
+
+#define OPENSSL_NO_ASYNC
+#define OPENSSL_NO_BF
+#define OPENSSL_NO_BLAKE2
+#define OPENSSL_NO_BUF_FREELISTS
+#define OPENSSL_NO_CAMELLIA
+#define OPENSSL_NO_CAPIENG
+#define OPENSSL_NO_CAST
+#define OPENSSL_NO_CMS
+#define OPENSSL_NO_COMP
+#define OPENSSL_NO_CT
+#define OPENSSL_NO_DANE
+#define OPENSSL_NO_DEPRECATED
+#define OPENSSL_NO_DGRAM
+#define OPENSSL_NO_DYNAMIC_ENGINE
+#define OPENSSL_NO_EC_NISTP_64_GCC_128
+#define OPENSSL_NO_EC2M
+#define OPENSSL_NO_EGD
+#define OPENSSL_NO_ENGINE
+#define OPENSSL_NO_GMP
+#define OPENSSL_NO_GOST
+#define OPENSSL_NO_HEARTBEATS
+#define OPENSSL_NO_HW
+#define OPENSSL_NO_IDEA
+#define OPENSSL_NO_JPAKE
+#define OPENSSL_NO_KRB5
+#define OPENSSL_NO_MD2
+#define OPENSSL_NO_MDC2
+#define OPENSSL_NO_OCB
+#define OPENSSL_NO_OCSP
+#define OPENSSL_NO_RC2
+#define OPENSSL_NO_RC5
+#define OPENSSL_NO_RFC3779
+#define OPENSSL_NO_RIPEMD
+#define OPENSSL_NO_RMD160
+#define OPENSSL_NO_SCTP
+#define OPENSSL_NO_SEED
+#define OPENSSL_NO_SRP
+#define OPENSSL_NO_SSL2
+#define OPENSSL_NO_SSL3
+#define OPENSSL_NO_SSL3_METHOD
+#define OPENSSL_NO_STATIC_ENGINE
+#define OPENSSL_NO_STORE
+#define OPENSSL_NO_WHIRLPOOL
+
+
+#endif  // OPENSSL_HEADER_OPENSSLCONF_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h
new file mode 100644
index 0000000..a3555d4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "crypto.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.back
new file mode 100644
index 0000000..a3555d4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "crypto.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.grpc_back
new file mode 100644
index 0000000..a3555d4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/opensslv.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "crypto.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h
new file mode 100644
index 0000000..c2b3fe7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "base.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.back
new file mode 100644
index 0000000..c2b3fe7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "base.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.grpc_back
new file mode 100644
index 0000000..c2b3fe7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ossl_typ.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "base.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h
new file mode 100644
index 0000000..f5fb945
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h	
@@ -0,0 +1,435 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_PEM_H
+#define OPENSSL_HEADER_PEM_H
+
+#include <openssl_grpc/base64.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/pkcs7.h>
+#include <openssl_grpc/x509.h>
+
+/* For compatibility with open-iscsi, which assumes that it can get
+ * |OPENSSL_malloc| from pem.h or err.h */
+#include <openssl_grpc/crypto.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define PEM_BUFSIZE		1024
+
+#define PEM_STRING_X509_OLD	"X509 CERTIFICATE"
+#define PEM_STRING_X509		"CERTIFICATE"
+#define PEM_STRING_X509_PAIR	"CERTIFICATE PAIR"
+#define PEM_STRING_X509_TRUSTED	"TRUSTED CERTIFICATE"
+#define PEM_STRING_X509_REQ_OLD	"NEW CERTIFICATE REQUEST"
+#define PEM_STRING_X509_REQ	"CERTIFICATE REQUEST"
+#define PEM_STRING_X509_CRL	"X509 CRL"
+#define PEM_STRING_EVP_PKEY	"ANY PRIVATE KEY"
+#define PEM_STRING_PUBLIC	"PUBLIC KEY"
+#define PEM_STRING_RSA		"RSA PRIVATE KEY"
+#define PEM_STRING_RSA_PUBLIC	"RSA PUBLIC KEY"
+#define PEM_STRING_DSA		"DSA PRIVATE KEY"
+#define PEM_STRING_DSA_PUBLIC	"DSA PUBLIC KEY"
+#define PEM_STRING_EC "EC PRIVATE KEY"
+#define PEM_STRING_PKCS7	"PKCS7"
+#define PEM_STRING_PKCS7_SIGNED	"PKCS #7 SIGNED DATA"
+#define PEM_STRING_PKCS8	"ENCRYPTED PRIVATE KEY"
+#define PEM_STRING_PKCS8INF	"PRIVATE KEY"
+#define PEM_STRING_DHPARAMS	"DH PARAMETERS"
+#define PEM_STRING_SSL_SESSION	"SSL SESSION PARAMETERS"
+#define PEM_STRING_DSAPARAMS	"DSA PARAMETERS"
+#define PEM_STRING_ECDSA_PUBLIC "ECDSA PUBLIC KEY"
+#define PEM_STRING_ECPRIVATEKEY	"EC PRIVATE KEY"
+#define PEM_STRING_CMS		"CMS"
+
+/* enc_type is one off */
+#define PEM_TYPE_ENCRYPTED      10
+#define PEM_TYPE_MIC_ONLY       20
+#define PEM_TYPE_MIC_CLEAR      30
+#define PEM_TYPE_CLEAR		40
+
+/* These macros make the PEM_read/PEM_write functions easier to maintain and
+ * write. Now they are all implemented with either:
+ * IMPLEMENT_PEM_rw(...) or IMPLEMENT_PEM_rw_cb(...)
+ */
+
+#ifdef OPENSSL_NO_FP_API
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) /**/
+
+#else
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1)                         \
+  static void *pem_read_##name##_d2i(void **x, const unsigned char **inp,    \
+                                     long len) {                             \
+    return d2i_##asn1((type **)x, inp, len);                                 \
+  }                                                                          \
+  OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x,                   \
+                                       pem_password_cb *cb, void *u) {       \
+    return (type *)PEM_ASN1_read(pem_read_##name##_d2i, str, fp, (void **)x, \
+                                 cb, u);                                     \
+  }
+
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1)                        \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {   \
+    return i2d_##asn1((type *)x, outp);                                      \
+  }                                                                          \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x) {                   \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, NULL, NULL, 0, \
+                          NULL, NULL);                                       \
+  }
+
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {  \
+    return i2d_##asn1((const type *)x, outp);                               \
+  }                                                                         \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x) {            \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, (void *)x, NULL, \
+                          NULL, 0, NULL, NULL);                             \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1)                       \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#endif
+
+#define IMPLEMENT_PEM_read_bio(name, type, str, asn1)                         \
+  static void *pem_read_bio_##name##_d2i(void **x, const unsigned char **inp, \
+                                         long len) {                          \
+    return d2i_##asn1((type **)x, inp, len);                                  \
+  }                                                                           \
+  OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x,                 \
+                                           pem_password_cb *cb, void *u) {    \
+    return (type *)PEM_ASN1_read_bio(pem_read_bio_##name##_d2i, str, bp,      \
+                                     (void **)x, cb, u);                      \
+  }
+
+#define IMPLEMENT_PEM_write_bio(name, type, str, asn1)                         \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x) {                  \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, NULL,    \
+                              NULL, 0, NULL, NULL);                            \
+  }
+
+#define IMPLEMENT_PEM_write_bio_const(name, type, str, asn1)                   \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x) {            \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              NULL, NULL, 0, NULL, NULL);                      \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1)                      \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, enc,     \
+                              kstr, klen, cb, u);                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1)                \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              enc, kstr, klen, cb, u);                         \
+  }
+
+#define IMPLEMENT_PEM_write(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_rw(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_const(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb(name, type, str, asn1)
+
+/* These are the same except they are for the declarations */
+
+#if defined(OPENSSL_NO_FP_API)
+
+#define DECLARE_PEM_read_fp(name, type) /**/
+#define DECLARE_PEM_write_fp(name, type) /**/
+#define DECLARE_PEM_write_cb_fp(name, type) /**/
+
+#else
+
+#define DECLARE_PEM_read_fp(name, type) \
+	OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x);
+
+#define DECLARE_PEM_write_fp_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x);
+
+#define DECLARE_PEM_write_cb_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+#endif
+
+#define DECLARE_PEM_read_bio(name, type) \
+	OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x);
+
+#define DECLARE_PEM_write_bio_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x);
+
+#define DECLARE_PEM_write_cb_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+
+#define DECLARE_PEM_write(name, type) \
+	DECLARE_PEM_write_bio(name, type) \
+	DECLARE_PEM_write_fp(name, type) 
+
+#define DECLARE_PEM_write_const(name, type) \
+	DECLARE_PEM_write_bio_const(name, type) \
+	DECLARE_PEM_write_fp_const(name, type)
+
+#define DECLARE_PEM_write_cb(name, type) \
+	DECLARE_PEM_write_cb_bio(name, type) \
+	DECLARE_PEM_write_cb_fp(name, type) 
+
+#define DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_read_bio(name, type) \
+	DECLARE_PEM_read_fp(name, type)
+
+#define DECLARE_PEM_rw(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write(name, type)
+
+#define DECLARE_PEM_rw_const(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_const(name, type)
+
+#define DECLARE_PEM_rw_cb(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_cb(name, type)
+
+/* "userdata": new with OpenSSL 0.9.4 */
+typedef int pem_password_cb(char *buf, int size, int rwflag, void *userdata);
+
+OPENSSL_EXPORT int	PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher);
+OPENSSL_EXPORT int	PEM_do_header (EVP_CIPHER_INFO *cipher, unsigned char *data,long *len, pem_password_cb *callback,void *u);
+
+OPENSSL_EXPORT int	PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write_bio(BIO *bp,const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT void *	PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write_bio(i2d_of_void *i2d,const char *name,BIO *bp, void *x, const EVP_CIPHER *enc,unsigned char *kstr,int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_X509_INFO_write_bio(BIO *bp,X509_INFO *xi, EVP_CIPHER *enc, unsigned char *kstr, int klen, pem_password_cb *cd, void *u);
+
+OPENSSL_EXPORT int	PEM_read(FILE *fp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write(FILE *fp, const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT void *  PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write(i2d_of_void *i2d,const char *name,FILE *fp, void *x,const EVP_CIPHER *enc,unsigned char *kstr, int klen,pem_password_cb *callback, void *u);
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+
+/* PEM_def_callback treats |userdata| as a string and copies it into |buf|,
+ * assuming its |size| is sufficient. Returns the length of the string, or 0
+ * if there is not enough room. If either |buf| or |userdata| is NULL, 0 is
+ * returned. Note that this is different from OpenSSL, which prompts for a
+ * password. */
+OPENSSL_EXPORT int	PEM_def_callback(char *buf, int size, int rwflag, void *userdata);
+OPENSSL_EXPORT void	PEM_proc_type(char *buf, int type);
+OPENSSL_EXPORT void	PEM_dek_info(char *buf, const char *type, int len, char *str);
+
+
+DECLARE_PEM_rw(X509, X509)
+
+DECLARE_PEM_rw(X509_AUX, X509)
+
+DECLARE_PEM_rw(X509_REQ, X509_REQ)
+DECLARE_PEM_write(X509_REQ_NEW, X509_REQ)
+
+DECLARE_PEM_rw(X509_CRL, X509_CRL)
+
+DECLARE_PEM_rw(PKCS7, PKCS7)
+DECLARE_PEM_rw(PKCS8, X509_SIG)
+
+DECLARE_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
+
+DECLARE_PEM_rw_cb(RSAPrivateKey, RSA)
+
+DECLARE_PEM_rw_const(RSAPublicKey, RSA)
+DECLARE_PEM_rw(RSA_PUBKEY, RSA)
+
+#ifndef OPENSSL_NO_DSA
+
+DECLARE_PEM_rw_cb(DSAPrivateKey, DSA)
+
+DECLARE_PEM_rw(DSA_PUBKEY, DSA)
+
+DECLARE_PEM_rw_const(DSAparams, DSA)
+
+#endif
+
+DECLARE_PEM_rw_cb(ECPrivateKey, EC_KEY)
+DECLARE_PEM_rw(EC_PUBKEY, EC_KEY)
+
+
+DECLARE_PEM_rw_const(DHparams, DH)
+
+
+DECLARE_PEM_rw_cb(PrivateKey, EVP_PKEY)
+
+DECLARE_PEM_rw(PUBKEY, EVP_PKEY)
+
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey(BIO *, EVP_PKEY *, const EVP_CIPHER *, char *, int, pem_password_cb *, void *);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey(FILE *fp,EVP_PKEY *x,const EVP_CIPHER *enc, char *kstr,int klen, pem_password_cb *cd, void *u);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#define PEM_R_BAD_BASE64_DECODE 100
+#define PEM_R_BAD_DECRYPT 101
+#define PEM_R_BAD_END_LINE 102
+#define PEM_R_BAD_IV_CHARS 103
+#define PEM_R_BAD_PASSWORD_READ 104
+#define PEM_R_CIPHER_IS_NULL 105
+#define PEM_R_ERROR_CONVERTING_PRIVATE_KEY 106
+#define PEM_R_NOT_DEK_INFO 107
+#define PEM_R_NOT_ENCRYPTED 108
+#define PEM_R_NOT_PROC_TYPE 109
+#define PEM_R_NO_START_LINE 110
+#define PEM_R_READ_KEY 111
+#define PEM_R_SHORT_HEADER 112
+#define PEM_R_UNSUPPORTED_CIPHER 113
+#define PEM_R_UNSUPPORTED_ENCRYPTION 114
+
+#endif  /* OPENSSL_HEADER_PEM_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.back
new file mode 100644
index 0000000..9c0ff93
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.back	
@@ -0,0 +1,435 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_PEM_H
+#define OPENSSL_HEADER_PEM_H
+
+#include <openssl/base64.h>
+#include <openssl/bio.h>
+#include <openssl/cipher.h>
+#include <openssl/digest.h>
+#include <openssl/evp.h>
+#include <openssl/stack.h>
+#include <openssl/pkcs7.h>
+#include <openssl/x509.h>
+
+/* For compatibility with open-iscsi, which assumes that it can get
+ * |OPENSSL_malloc| from pem.h or err.h */
+#include <openssl/crypto.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define PEM_BUFSIZE		1024
+
+#define PEM_STRING_X509_OLD	"X509 CERTIFICATE"
+#define PEM_STRING_X509		"CERTIFICATE"
+#define PEM_STRING_X509_PAIR	"CERTIFICATE PAIR"
+#define PEM_STRING_X509_TRUSTED	"TRUSTED CERTIFICATE"
+#define PEM_STRING_X509_REQ_OLD	"NEW CERTIFICATE REQUEST"
+#define PEM_STRING_X509_REQ	"CERTIFICATE REQUEST"
+#define PEM_STRING_X509_CRL	"X509 CRL"
+#define PEM_STRING_EVP_PKEY	"ANY PRIVATE KEY"
+#define PEM_STRING_PUBLIC	"PUBLIC KEY"
+#define PEM_STRING_RSA		"RSA PRIVATE KEY"
+#define PEM_STRING_RSA_PUBLIC	"RSA PUBLIC KEY"
+#define PEM_STRING_DSA		"DSA PRIVATE KEY"
+#define PEM_STRING_DSA_PUBLIC	"DSA PUBLIC KEY"
+#define PEM_STRING_EC "EC PRIVATE KEY"
+#define PEM_STRING_PKCS7	"PKCS7"
+#define PEM_STRING_PKCS7_SIGNED	"PKCS #7 SIGNED DATA"
+#define PEM_STRING_PKCS8	"ENCRYPTED PRIVATE KEY"
+#define PEM_STRING_PKCS8INF	"PRIVATE KEY"
+#define PEM_STRING_DHPARAMS	"DH PARAMETERS"
+#define PEM_STRING_SSL_SESSION	"SSL SESSION PARAMETERS"
+#define PEM_STRING_DSAPARAMS	"DSA PARAMETERS"
+#define PEM_STRING_ECDSA_PUBLIC "ECDSA PUBLIC KEY"
+#define PEM_STRING_ECPRIVATEKEY	"EC PRIVATE KEY"
+#define PEM_STRING_CMS		"CMS"
+
+/* enc_type is one off */
+#define PEM_TYPE_ENCRYPTED      10
+#define PEM_TYPE_MIC_ONLY       20
+#define PEM_TYPE_MIC_CLEAR      30
+#define PEM_TYPE_CLEAR		40
+
+/* These macros make the PEM_read/PEM_write functions easier to maintain and
+ * write. Now they are all implemented with either:
+ * IMPLEMENT_PEM_rw(...) or IMPLEMENT_PEM_rw_cb(...)
+ */
+
+#ifdef OPENSSL_NO_FP_API
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) /**/
+
+#else
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1)                         \
+  static void *pem_read_##name##_d2i(void **x, const unsigned char **inp,    \
+                                     long len) {                             \
+    return d2i_##asn1((type **)x, inp, len);                                 \
+  }                                                                          \
+  OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x,                   \
+                                       pem_password_cb *cb, void *u) {       \
+    return (type *)PEM_ASN1_read(pem_read_##name##_d2i, str, fp, (void **)x, \
+                                 cb, u);                                     \
+  }
+
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1)                        \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {   \
+    return i2d_##asn1((type *)x, outp);                                      \
+  }                                                                          \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x) {                   \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, NULL, NULL, 0, \
+                          NULL, NULL);                                       \
+  }
+
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {  \
+    return i2d_##asn1((const type *)x, outp);                               \
+  }                                                                         \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x) {            \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, (void *)x, NULL, \
+                          NULL, 0, NULL, NULL);                             \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1)                       \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#endif
+
+#define IMPLEMENT_PEM_read_bio(name, type, str, asn1)                         \
+  static void *pem_read_bio_##name##_d2i(void **x, const unsigned char **inp, \
+                                         long len) {                          \
+    return d2i_##asn1((type **)x, inp, len);                                  \
+  }                                                                           \
+  OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x,                 \
+                                           pem_password_cb *cb, void *u) {    \
+    return (type *)PEM_ASN1_read_bio(pem_read_bio_##name##_d2i, str, bp,      \
+                                     (void **)x, cb, u);                      \
+  }
+
+#define IMPLEMENT_PEM_write_bio(name, type, str, asn1)                         \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x) {                  \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, NULL,    \
+                              NULL, 0, NULL, NULL);                            \
+  }
+
+#define IMPLEMENT_PEM_write_bio_const(name, type, str, asn1)                   \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x) {            \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              NULL, NULL, 0, NULL, NULL);                      \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1)                      \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, enc,     \
+                              kstr, klen, cb, u);                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1)                \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              enc, kstr, klen, cb, u);                         \
+  }
+
+#define IMPLEMENT_PEM_write(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_rw(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_const(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb(name, type, str, asn1)
+
+/* These are the same except they are for the declarations */
+
+#if defined(OPENSSL_NO_FP_API)
+
+#define DECLARE_PEM_read_fp(name, type) /**/
+#define DECLARE_PEM_write_fp(name, type) /**/
+#define DECLARE_PEM_write_cb_fp(name, type) /**/
+
+#else
+
+#define DECLARE_PEM_read_fp(name, type) \
+	OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x);
+
+#define DECLARE_PEM_write_fp_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x);
+
+#define DECLARE_PEM_write_cb_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+#endif
+
+#define DECLARE_PEM_read_bio(name, type) \
+	OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x);
+
+#define DECLARE_PEM_write_bio_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x);
+
+#define DECLARE_PEM_write_cb_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+
+#define DECLARE_PEM_write(name, type) \
+	DECLARE_PEM_write_bio(name, type) \
+	DECLARE_PEM_write_fp(name, type) 
+
+#define DECLARE_PEM_write_const(name, type) \
+	DECLARE_PEM_write_bio_const(name, type) \
+	DECLARE_PEM_write_fp_const(name, type)
+
+#define DECLARE_PEM_write_cb(name, type) \
+	DECLARE_PEM_write_cb_bio(name, type) \
+	DECLARE_PEM_write_cb_fp(name, type) 
+
+#define DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_read_bio(name, type) \
+	DECLARE_PEM_read_fp(name, type)
+
+#define DECLARE_PEM_rw(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write(name, type)
+
+#define DECLARE_PEM_rw_const(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_const(name, type)
+
+#define DECLARE_PEM_rw_cb(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_cb(name, type)
+
+/* "userdata": new with OpenSSL 0.9.4 */
+typedef int pem_password_cb(char *buf, int size, int rwflag, void *userdata);
+
+OPENSSL_EXPORT int	PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher);
+OPENSSL_EXPORT int	PEM_do_header (EVP_CIPHER_INFO *cipher, unsigned char *data,long *len, pem_password_cb *callback,void *u);
+
+OPENSSL_EXPORT int	PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write_bio(BIO *bp,const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT void *	PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write_bio(i2d_of_void *i2d,const char *name,BIO *bp, void *x, const EVP_CIPHER *enc,unsigned char *kstr,int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_X509_INFO_write_bio(BIO *bp,X509_INFO *xi, EVP_CIPHER *enc, unsigned char *kstr, int klen, pem_password_cb *cd, void *u);
+
+OPENSSL_EXPORT int	PEM_read(FILE *fp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write(FILE *fp, const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT void *  PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write(i2d_of_void *i2d,const char *name,FILE *fp, void *x,const EVP_CIPHER *enc,unsigned char *kstr, int klen,pem_password_cb *callback, void *u);
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+
+/* PEM_def_callback treats |userdata| as a string and copies it into |buf|,
+ * assuming its |size| is sufficient. Returns the length of the string, or 0
+ * if there is not enough room. If either |buf| or |userdata| is NULL, 0 is
+ * returned. Note that this is different from OpenSSL, which prompts for a
+ * password. */
+OPENSSL_EXPORT int	PEM_def_callback(char *buf, int size, int rwflag, void *userdata);
+OPENSSL_EXPORT void	PEM_proc_type(char *buf, int type);
+OPENSSL_EXPORT void	PEM_dek_info(char *buf, const char *type, int len, char *str);
+
+
+DECLARE_PEM_rw(X509, X509)
+
+DECLARE_PEM_rw(X509_AUX, X509)
+
+DECLARE_PEM_rw(X509_REQ, X509_REQ)
+DECLARE_PEM_write(X509_REQ_NEW, X509_REQ)
+
+DECLARE_PEM_rw(X509_CRL, X509_CRL)
+
+DECLARE_PEM_rw(PKCS7, PKCS7)
+DECLARE_PEM_rw(PKCS8, X509_SIG)
+
+DECLARE_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
+
+DECLARE_PEM_rw_cb(RSAPrivateKey, RSA)
+
+DECLARE_PEM_rw_const(RSAPublicKey, RSA)
+DECLARE_PEM_rw(RSA_PUBKEY, RSA)
+
+#ifndef OPENSSL_NO_DSA
+
+DECLARE_PEM_rw_cb(DSAPrivateKey, DSA)
+
+DECLARE_PEM_rw(DSA_PUBKEY, DSA)
+
+DECLARE_PEM_rw_const(DSAparams, DSA)
+
+#endif
+
+DECLARE_PEM_rw_cb(ECPrivateKey, EC_KEY)
+DECLARE_PEM_rw(EC_PUBKEY, EC_KEY)
+
+
+DECLARE_PEM_rw_const(DHparams, DH)
+
+
+DECLARE_PEM_rw_cb(PrivateKey, EVP_PKEY)
+
+DECLARE_PEM_rw(PUBKEY, EVP_PKEY)
+
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey(BIO *, EVP_PKEY *, const EVP_CIPHER *, char *, int, pem_password_cb *, void *);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey(FILE *fp,EVP_PKEY *x,const EVP_CIPHER *enc, char *kstr,int klen, pem_password_cb *cd, void *u);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#define PEM_R_BAD_BASE64_DECODE 100
+#define PEM_R_BAD_DECRYPT 101
+#define PEM_R_BAD_END_LINE 102
+#define PEM_R_BAD_IV_CHARS 103
+#define PEM_R_BAD_PASSWORD_READ 104
+#define PEM_R_CIPHER_IS_NULL 105
+#define PEM_R_ERROR_CONVERTING_PRIVATE_KEY 106
+#define PEM_R_NOT_DEK_INFO 107
+#define PEM_R_NOT_ENCRYPTED 108
+#define PEM_R_NOT_PROC_TYPE 109
+#define PEM_R_NO_START_LINE 110
+#define PEM_R_READ_KEY 111
+#define PEM_R_SHORT_HEADER 112
+#define PEM_R_UNSUPPORTED_CIPHER 113
+#define PEM_R_UNSUPPORTED_ENCRYPTION 114
+
+#endif  /* OPENSSL_HEADER_PEM_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.grpc_back
new file mode 100644
index 0000000..9c0ff93
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pem.h.grpc_back	
@@ -0,0 +1,435 @@
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_PEM_H
+#define OPENSSL_HEADER_PEM_H
+
+#include <openssl/base64.h>
+#include <openssl/bio.h>
+#include <openssl/cipher.h>
+#include <openssl/digest.h>
+#include <openssl/evp.h>
+#include <openssl/stack.h>
+#include <openssl/pkcs7.h>
+#include <openssl/x509.h>
+
+/* For compatibility with open-iscsi, which assumes that it can get
+ * |OPENSSL_malloc| from pem.h or err.h */
+#include <openssl/crypto.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define PEM_BUFSIZE		1024
+
+#define PEM_STRING_X509_OLD	"X509 CERTIFICATE"
+#define PEM_STRING_X509		"CERTIFICATE"
+#define PEM_STRING_X509_PAIR	"CERTIFICATE PAIR"
+#define PEM_STRING_X509_TRUSTED	"TRUSTED CERTIFICATE"
+#define PEM_STRING_X509_REQ_OLD	"NEW CERTIFICATE REQUEST"
+#define PEM_STRING_X509_REQ	"CERTIFICATE REQUEST"
+#define PEM_STRING_X509_CRL	"X509 CRL"
+#define PEM_STRING_EVP_PKEY	"ANY PRIVATE KEY"
+#define PEM_STRING_PUBLIC	"PUBLIC KEY"
+#define PEM_STRING_RSA		"RSA PRIVATE KEY"
+#define PEM_STRING_RSA_PUBLIC	"RSA PUBLIC KEY"
+#define PEM_STRING_DSA		"DSA PRIVATE KEY"
+#define PEM_STRING_DSA_PUBLIC	"DSA PUBLIC KEY"
+#define PEM_STRING_EC "EC PRIVATE KEY"
+#define PEM_STRING_PKCS7	"PKCS7"
+#define PEM_STRING_PKCS7_SIGNED	"PKCS #7 SIGNED DATA"
+#define PEM_STRING_PKCS8	"ENCRYPTED PRIVATE KEY"
+#define PEM_STRING_PKCS8INF	"PRIVATE KEY"
+#define PEM_STRING_DHPARAMS	"DH PARAMETERS"
+#define PEM_STRING_SSL_SESSION	"SSL SESSION PARAMETERS"
+#define PEM_STRING_DSAPARAMS	"DSA PARAMETERS"
+#define PEM_STRING_ECDSA_PUBLIC "ECDSA PUBLIC KEY"
+#define PEM_STRING_ECPRIVATEKEY	"EC PRIVATE KEY"
+#define PEM_STRING_CMS		"CMS"
+
+/* enc_type is one off */
+#define PEM_TYPE_ENCRYPTED      10
+#define PEM_TYPE_MIC_ONLY       20
+#define PEM_TYPE_MIC_CLEAR      30
+#define PEM_TYPE_CLEAR		40
+
+/* These macros make the PEM_read/PEM_write functions easier to maintain and
+ * write. Now they are all implemented with either:
+ * IMPLEMENT_PEM_rw(...) or IMPLEMENT_PEM_rw_cb(...)
+ */
+
+#ifdef OPENSSL_NO_FP_API
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) /**/
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) /**/
+
+#else
+
+#define IMPLEMENT_PEM_read_fp(name, type, str, asn1)                         \
+  static void *pem_read_##name##_d2i(void **x, const unsigned char **inp,    \
+                                     long len) {                             \
+    return d2i_##asn1((type **)x, inp, len);                                 \
+  }                                                                          \
+  OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x,                   \
+                                       pem_password_cb *cb, void *u) {       \
+    return (type *)PEM_ASN1_read(pem_read_##name##_d2i, str, fp, (void **)x, \
+                                 cb, u);                                     \
+  }
+
+#define IMPLEMENT_PEM_write_fp(name, type, str, asn1)                        \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {   \
+    return i2d_##asn1((type *)x, outp);                                      \
+  }                                                                          \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x) {                   \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, NULL, NULL, 0, \
+                          NULL, NULL);                                       \
+  }
+
+#define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {  \
+    return i2d_##asn1((const type *)x, outp);                               \
+  }                                                                         \
+  OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x) {            \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, (void *)x, NULL, \
+                          NULL, 0, NULL, NULL);                             \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1)                       \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1)                 \
+  static int pem_write_##name##_i2d(const void *x, unsigned char **outp) {     \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_##name(                                         \
+      FILE *fp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen, \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write(pem_write_##name##_i2d, str, fp, x, enc, kstr, klen, \
+                          cb, u);                                              \
+  }
+
+#endif
+
+#define IMPLEMENT_PEM_read_bio(name, type, str, asn1)                         \
+  static void *pem_read_bio_##name##_d2i(void **x, const unsigned char **inp, \
+                                         long len) {                          \
+    return d2i_##asn1((type **)x, inp, len);                                  \
+  }                                                                           \
+  OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x,                 \
+                                           pem_password_cb *cb, void *u) {    \
+    return (type *)PEM_ASN1_read_bio(pem_read_bio_##name##_d2i, str, bp,      \
+                                     (void **)x, cb, u);                      \
+  }
+
+#define IMPLEMENT_PEM_write_bio(name, type, str, asn1)                         \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x) {                  \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, NULL,    \
+                              NULL, 0, NULL, NULL);                            \
+  }
+
+#define IMPLEMENT_PEM_write_bio_const(name, type, str, asn1)                   \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x) {            \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              NULL, NULL, 0, NULL, NULL);                      \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1)                      \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((type *)x, outp);                                        \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, x, enc,     \
+                              kstr, klen, cb, u);                              \
+  }
+
+#define IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1)                \
+  static int pem_write_bio_##name##_i2d(const void *x, unsigned char **outp) { \
+    return i2d_##asn1((const type *)x, outp);                                  \
+  }                                                                            \
+  OPENSSL_EXPORT int PEM_write_bio_##name(                                     \
+      BIO *bp, type *x, const EVP_CIPHER *enc, unsigned char *kstr, int klen,  \
+      pem_password_cb *cb, void *u) {                                          \
+    return PEM_ASN1_write_bio(pem_write_bio_##name##_i2d, str, bp, (void *)x,  \
+                              enc, kstr, klen, cb, u);                         \
+  }
+
+#define IMPLEMENT_PEM_write(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_write_cb_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
+	IMPLEMENT_PEM_read_fp(name, type, str, asn1) 
+
+#define IMPLEMENT_PEM_rw(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_const(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_const(name, type, str, asn1)
+
+#define IMPLEMENT_PEM_rw_cb(name, type, str, asn1) \
+	IMPLEMENT_PEM_read(name, type, str, asn1) \
+	IMPLEMENT_PEM_write_cb(name, type, str, asn1)
+
+/* These are the same except they are for the declarations */
+
+#if defined(OPENSSL_NO_FP_API)
+
+#define DECLARE_PEM_read_fp(name, type) /**/
+#define DECLARE_PEM_write_fp(name, type) /**/
+#define DECLARE_PEM_write_cb_fp(name, type) /**/
+
+#else
+
+#define DECLARE_PEM_read_fp(name, type) \
+	OPENSSL_EXPORT type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x);
+
+#define DECLARE_PEM_write_fp_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, const type *x);
+
+#define DECLARE_PEM_write_cb_fp(name, type) \
+	OPENSSL_EXPORT int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+#endif
+
+#define DECLARE_PEM_read_bio(name, type) \
+	OPENSSL_EXPORT type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u);
+
+#define DECLARE_PEM_write_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x);
+
+#define DECLARE_PEM_write_bio_const(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, const type *x);
+
+#define DECLARE_PEM_write_cb_bio(name, type) \
+	OPENSSL_EXPORT int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
+	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
+
+
+#define DECLARE_PEM_write(name, type) \
+	DECLARE_PEM_write_bio(name, type) \
+	DECLARE_PEM_write_fp(name, type) 
+
+#define DECLARE_PEM_write_const(name, type) \
+	DECLARE_PEM_write_bio_const(name, type) \
+	DECLARE_PEM_write_fp_const(name, type)
+
+#define DECLARE_PEM_write_cb(name, type) \
+	DECLARE_PEM_write_cb_bio(name, type) \
+	DECLARE_PEM_write_cb_fp(name, type) 
+
+#define DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_read_bio(name, type) \
+	DECLARE_PEM_read_fp(name, type)
+
+#define DECLARE_PEM_rw(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write(name, type)
+
+#define DECLARE_PEM_rw_const(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_const(name, type)
+
+#define DECLARE_PEM_rw_cb(name, type) \
+	DECLARE_PEM_read(name, type) \
+	DECLARE_PEM_write_cb(name, type)
+
+/* "userdata": new with OpenSSL 0.9.4 */
+typedef int pem_password_cb(char *buf, int size, int rwflag, void *userdata);
+
+OPENSSL_EXPORT int	PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher);
+OPENSSL_EXPORT int	PEM_do_header (EVP_CIPHER_INFO *cipher, unsigned char *data,long *len, pem_password_cb *callback,void *u);
+
+OPENSSL_EXPORT int	PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write_bio(BIO *bp,const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT void *	PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write_bio(i2d_of_void *i2d,const char *name,BIO *bp, void *x, const EVP_CIPHER *enc,unsigned char *kstr,int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_X509_INFO_write_bio(BIO *bp,X509_INFO *xi, EVP_CIPHER *enc, unsigned char *kstr, int klen, pem_password_cb *cd, void *u);
+
+OPENSSL_EXPORT int	PEM_read(FILE *fp, char **name, char **header, unsigned char **data,long *len);
+OPENSSL_EXPORT int	PEM_write(FILE *fp, const char *name, const char *hdr, const unsigned char *data, long len);
+OPENSSL_EXPORT void *  PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int	PEM_ASN1_write(i2d_of_void *i2d,const char *name,FILE *fp, void *x,const EVP_CIPHER *enc,unsigned char *kstr, int klen,pem_password_cb *callback, void *u);
+OPENSSL_EXPORT STACK_OF(X509_INFO) *	PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
+
+/* PEM_def_callback treats |userdata| as a string and copies it into |buf|,
+ * assuming its |size| is sufficient. Returns the length of the string, or 0
+ * if there is not enough room. If either |buf| or |userdata| is NULL, 0 is
+ * returned. Note that this is different from OpenSSL, which prompts for a
+ * password. */
+OPENSSL_EXPORT int	PEM_def_callback(char *buf, int size, int rwflag, void *userdata);
+OPENSSL_EXPORT void	PEM_proc_type(char *buf, int type);
+OPENSSL_EXPORT void	PEM_dek_info(char *buf, const char *type, int len, char *str);
+
+
+DECLARE_PEM_rw(X509, X509)
+
+DECLARE_PEM_rw(X509_AUX, X509)
+
+DECLARE_PEM_rw(X509_REQ, X509_REQ)
+DECLARE_PEM_write(X509_REQ_NEW, X509_REQ)
+
+DECLARE_PEM_rw(X509_CRL, X509_CRL)
+
+DECLARE_PEM_rw(PKCS7, PKCS7)
+DECLARE_PEM_rw(PKCS8, X509_SIG)
+
+DECLARE_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
+
+DECLARE_PEM_rw_cb(RSAPrivateKey, RSA)
+
+DECLARE_PEM_rw_const(RSAPublicKey, RSA)
+DECLARE_PEM_rw(RSA_PUBKEY, RSA)
+
+#ifndef OPENSSL_NO_DSA
+
+DECLARE_PEM_rw_cb(DSAPrivateKey, DSA)
+
+DECLARE_PEM_rw(DSA_PUBKEY, DSA)
+
+DECLARE_PEM_rw_const(DSAparams, DSA)
+
+#endif
+
+DECLARE_PEM_rw_cb(ECPrivateKey, EC_KEY)
+DECLARE_PEM_rw(EC_PUBKEY, EC_KEY)
+
+
+DECLARE_PEM_rw_const(DHparams, DH)
+
+
+DECLARE_PEM_rw_cb(PrivateKey, EVP_PKEY)
+
+DECLARE_PEM_rw(PUBKEY, EVP_PKEY)
+
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_bio_PKCS8PrivateKey(BIO *, EVP_PKEY *, const EVP_CIPHER *, char *, int, pem_password_cb *, void *);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr, int klen, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u);
+
+OPENSSL_EXPORT int PEM_write_PKCS8PrivateKey(FILE *fp,EVP_PKEY *x,const EVP_CIPHER *enc, char *kstr,int klen, pem_password_cb *cd, void *u);
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#define PEM_R_BAD_BASE64_DECODE 100
+#define PEM_R_BAD_DECRYPT 101
+#define PEM_R_BAD_END_LINE 102
+#define PEM_R_BAD_IV_CHARS 103
+#define PEM_R_BAD_PASSWORD_READ 104
+#define PEM_R_CIPHER_IS_NULL 105
+#define PEM_R_ERROR_CONVERTING_PRIVATE_KEY 106
+#define PEM_R_NOT_DEK_INFO 107
+#define PEM_R_NOT_ENCRYPTED 108
+#define PEM_R_NOT_PROC_TYPE 109
+#define PEM_R_NO_START_LINE 110
+#define PEM_R_READ_KEY 111
+#define PEM_R_SHORT_HEADER 112
+#define PEM_R_UNSUPPORTED_CIPHER 113
+#define PEM_R_UNSUPPORTED_ENCRYPTION 114
+
+#endif  /* OPENSSL_HEADER_PEM_H */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h
new file mode 100644
index 0000000..b5e9516
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "pkcs8.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.back
new file mode 100644
index 0000000..b5e9516
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "pkcs8.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.grpc_back
new file mode 100644
index 0000000..b5e9516
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs12.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "pkcs8.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h
new file mode 100644
index 0000000..987d7b8
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h	
@@ -0,0 +1,215 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_PKCS7_H
+#define OPENSSL_HEADER_PKCS7_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS#7.
+//
+// This library contains functions for extracting information from PKCS#7
+// structures (RFC 2315).
+
+DECLARE_STACK_OF(CRYPTO_BUFFER)
+DECLARE_STACK_OF(X509)
+DECLARE_STACK_OF(X509_CRL)
+
+// PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
+// and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_raw_certificates(
+    STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
+// them into |X509| objects.
+OPENSSL_EXPORT int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs);
+
+// PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
+// |certs| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_certificates(
+    CBB *out, const STACK_OF(X509) *certs);
+
+// PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
+// the included CRLs to |out_crls|. It returns one on success and zero on error.
+// |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs);
+
+// PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
+// |crls| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls);
+
+// PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
+// from |pem_bio| and appends the included certificates to |out_certs|. It
+// returns one on success and zero on error.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs,
+                                              BIO *pem_bio);
+
+// PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
+// |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
+// success and zero on error.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls,
+                                      BIO *pem_bio);
+
+
+// Deprecated functions.
+//
+// These functions are a compatibility layer over a subset of OpenSSL's PKCS#7
+// API. It intentionally does not implement the whole thing, only the minimum
+// needed to build cryptography.io.
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGNED;
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGN_ENVELOPE;
+
+typedef void PKCS7_ENVELOPE;
+typedef void PKCS7_DIGEST;
+typedef void PKCS7_ENCRYPT;
+
+typedef struct {
+  uint8_t *ber_bytes;
+  size_t ber_len;
+
+  // Unlike OpenSSL, the following fields are immutable. They filled in when the
+  // object is parsed and ignored in serialization.
+  ASN1_OBJECT *type;
+  union {
+    char *ptr;
+    ASN1_OCTET_STRING *data;
+    PKCS7_SIGNED *sign;
+    PKCS7_ENVELOPE *enveloped;
+    PKCS7_SIGN_ENVELOPE *signed_and_enveloped;
+    PKCS7_DIGEST *digest;
+    PKCS7_ENCRYPT *encrypted;
+    ASN1_TYPE *other;
+  } d;
+} PKCS7;
+
+// d2i_PKCS7 parses a BER-encoded, PKCS#7 signed data ContentInfo structure from
+// |len| bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the
+// result is in |*out|. Note that, even if |*out| is already non-NULL on entry,
+// it will not be written to. Rather, a fresh |PKCS7| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the BER
+// structure.  It returns the result or NULL on error.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
+                                size_t len);
+
+// d2i_PKCS7_bio behaves like |d2i_PKCS7| but reads the input from |bio|.  If
+// the length of the object is indefinite the full contents of |bio| are read.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out);
+
+// i2d_PKCS7 is a dummy function which copies the contents of |p7|. If |out| is
+// not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS7(const PKCS7 *p7, uint8_t **out);
+
+// i2d_PKCS7_bio writes |p7| to |bio|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7);
+
+// PKCS7_free releases memory associated with |p7|.
+OPENSSL_EXPORT void PKCS7_free(PKCS7 *p7);
+
+// PKCS7_type_is_data returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_data(const PKCS7 *p7);
+
+// PKCS7_type_is_digest returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_digest(const PKCS7 *p7);
+
+// PKCS7_type_is_encrypted returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_encrypted(const PKCS7 *p7);
+
+// PKCS7_type_is_enveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_enveloped(const PKCS7 *p7);
+
+// PKCS7_type_is_signed returns one. (We only supporte signed data
+// ContentInfos.)
+OPENSSL_EXPORT int PKCS7_type_is_signed(const PKCS7 *p7);
+
+// PKCS7_type_is_signedAndEnveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7);
+
+// PKCS7_DETACHED indicates that the PKCS#7 file specifies its data externally.
+#define PKCS7_DETACHED 0x40
+
+// The following flags cause |PKCS7_sign| to fail.
+#define PKCS7_TEXT 0x1
+#define PKCS7_NOCERTS 0x2
+#define PKCS7_NOSIGS 0x4
+#define PKCS7_NOCHAIN 0x8
+#define PKCS7_NOINTERN 0x10
+#define PKCS7_NOVERIFY 0x20
+#define PKCS7_BINARY 0x80
+#define PKCS7_NOATTR 0x100
+#define PKCS7_NOSMIMECAP 0x200
+#define PKCS7_STREAM 0x1000
+
+// PKCS7_sign assembles |certs| into a PKCS#7 signed data ContentInfo with
+// external data and no signatures. It returns a newly-allocated |PKCS7| on
+// success or NULL on error. |sign_cert| and |pkey| must be NULL. |data| is
+// ignored. |flags| must be equal to |PKCS7_DETACHED|.
+//
+// Note this function only implements a subset of the corresponding OpenSSL
+// function. It is provided for backwards compatibility only.
+OPENSSL_EXPORT PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey,
+                                 STACK_OF(X509) *certs, BIO *data, int flags);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS7, PKCS7_free)
+
+BSSL_NAMESPACE_END
+}  // extern C++
+#endif
+
+#define PKCS7_R_BAD_PKCS7_VERSION 100
+#define PKCS7_R_NOT_PKCS7_SIGNED_DATA 101
+#define PKCS7_R_NO_CERTIFICATES_INCLUDED 102
+#define PKCS7_R_NO_CRLS_INCLUDED 103
+
+#endif  // OPENSSL_HEADER_PKCS7_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.back
new file mode 100644
index 0000000..cb6155f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.back	
@@ -0,0 +1,215 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_PKCS7_H
+#define OPENSSL_HEADER_PKCS7_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS#7.
+//
+// This library contains functions for extracting information from PKCS#7
+// structures (RFC 2315).
+
+DECLARE_STACK_OF(CRYPTO_BUFFER)
+DECLARE_STACK_OF(X509)
+DECLARE_STACK_OF(X509_CRL)
+
+// PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
+// and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_raw_certificates(
+    STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
+// them into |X509| objects.
+OPENSSL_EXPORT int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs);
+
+// PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
+// |certs| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_certificates(
+    CBB *out, const STACK_OF(X509) *certs);
+
+// PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
+// the included CRLs to |out_crls|. It returns one on success and zero on error.
+// |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs);
+
+// PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
+// |crls| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls);
+
+// PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
+// from |pem_bio| and appends the included certificates to |out_certs|. It
+// returns one on success and zero on error.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs,
+                                              BIO *pem_bio);
+
+// PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
+// |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
+// success and zero on error.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls,
+                                      BIO *pem_bio);
+
+
+// Deprecated functions.
+//
+// These functions are a compatibility layer over a subset of OpenSSL's PKCS#7
+// API. It intentionally does not implement the whole thing, only the minimum
+// needed to build cryptography.io.
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGNED;
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGN_ENVELOPE;
+
+typedef void PKCS7_ENVELOPE;
+typedef void PKCS7_DIGEST;
+typedef void PKCS7_ENCRYPT;
+
+typedef struct {
+  uint8_t *ber_bytes;
+  size_t ber_len;
+
+  // Unlike OpenSSL, the following fields are immutable. They filled in when the
+  // object is parsed and ignored in serialization.
+  ASN1_OBJECT *type;
+  union {
+    char *ptr;
+    ASN1_OCTET_STRING *data;
+    PKCS7_SIGNED *sign;
+    PKCS7_ENVELOPE *enveloped;
+    PKCS7_SIGN_ENVELOPE *signed_and_enveloped;
+    PKCS7_DIGEST *digest;
+    PKCS7_ENCRYPT *encrypted;
+    ASN1_TYPE *other;
+  } d;
+} PKCS7;
+
+// d2i_PKCS7 parses a BER-encoded, PKCS#7 signed data ContentInfo structure from
+// |len| bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the
+// result is in |*out|. Note that, even if |*out| is already non-NULL on entry,
+// it will not be written to. Rather, a fresh |PKCS7| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the BER
+// structure.  It returns the result or NULL on error.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
+                                size_t len);
+
+// d2i_PKCS7_bio behaves like |d2i_PKCS7| but reads the input from |bio|.  If
+// the length of the object is indefinite the full contents of |bio| are read.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out);
+
+// i2d_PKCS7 is a dummy function which copies the contents of |p7|. If |out| is
+// not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS7(const PKCS7 *p7, uint8_t **out);
+
+// i2d_PKCS7_bio writes |p7| to |bio|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7);
+
+// PKCS7_free releases memory associated with |p7|.
+OPENSSL_EXPORT void PKCS7_free(PKCS7 *p7);
+
+// PKCS7_type_is_data returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_data(const PKCS7 *p7);
+
+// PKCS7_type_is_digest returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_digest(const PKCS7 *p7);
+
+// PKCS7_type_is_encrypted returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_encrypted(const PKCS7 *p7);
+
+// PKCS7_type_is_enveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_enveloped(const PKCS7 *p7);
+
+// PKCS7_type_is_signed returns one. (We only supporte signed data
+// ContentInfos.)
+OPENSSL_EXPORT int PKCS7_type_is_signed(const PKCS7 *p7);
+
+// PKCS7_type_is_signedAndEnveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7);
+
+// PKCS7_DETACHED indicates that the PKCS#7 file specifies its data externally.
+#define PKCS7_DETACHED 0x40
+
+// The following flags cause |PKCS7_sign| to fail.
+#define PKCS7_TEXT 0x1
+#define PKCS7_NOCERTS 0x2
+#define PKCS7_NOSIGS 0x4
+#define PKCS7_NOCHAIN 0x8
+#define PKCS7_NOINTERN 0x10
+#define PKCS7_NOVERIFY 0x20
+#define PKCS7_BINARY 0x80
+#define PKCS7_NOATTR 0x100
+#define PKCS7_NOSMIMECAP 0x200
+#define PKCS7_STREAM 0x1000
+
+// PKCS7_sign assembles |certs| into a PKCS#7 signed data ContentInfo with
+// external data and no signatures. It returns a newly-allocated |PKCS7| on
+// success or NULL on error. |sign_cert| and |pkey| must be NULL. |data| is
+// ignored. |flags| must be equal to |PKCS7_DETACHED|.
+//
+// Note this function only implements a subset of the corresponding OpenSSL
+// function. It is provided for backwards compatibility only.
+OPENSSL_EXPORT PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey,
+                                 STACK_OF(X509) *certs, BIO *data, int flags);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS7, PKCS7_free)
+
+BSSL_NAMESPACE_END
+}  // extern C++
+#endif
+
+#define PKCS7_R_BAD_PKCS7_VERSION 100
+#define PKCS7_R_NOT_PKCS7_SIGNED_DATA 101
+#define PKCS7_R_NO_CERTIFICATES_INCLUDED 102
+#define PKCS7_R_NO_CRLS_INCLUDED 103
+
+#endif  // OPENSSL_HEADER_PKCS7_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.grpc_back
new file mode 100644
index 0000000..cb6155f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs7.h.grpc_back	
@@ -0,0 +1,215 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_PKCS7_H
+#define OPENSSL_HEADER_PKCS7_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS#7.
+//
+// This library contains functions for extracting information from PKCS#7
+// structures (RFC 2315).
+
+DECLARE_STACK_OF(CRYPTO_BUFFER)
+DECLARE_STACK_OF(X509)
+DECLARE_STACK_OF(X509_CRL)
+
+// PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
+// and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_raw_certificates(
+    STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
+// them into |X509| objects.
+OPENSSL_EXPORT int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs);
+
+// PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
+// |certs| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_certificates(
+    CBB *out, const STACK_OF(X509) *certs);
+
+// PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
+// the included CRLs to |out_crls|. It returns one on success and zero on error.
+// |cbs| is advanced passed the structure.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs);
+
+// PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
+// |crls| to |out|. It returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls);
+
+// PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
+// from |pem_bio| and appends the included certificates to |out_certs|. It
+// returns one on success and zero on error.
+//
+// Note that a SignedData structure may contain no certificates, in which case
+// this function succeeds but does not append any certificates.
+OPENSSL_EXPORT int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs,
+                                              BIO *pem_bio);
+
+// PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
+// |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
+// success and zero on error.
+//
+// Note that a SignedData structure may contain no CRLs, in which case this
+// function succeeds but does not append any CRLs.
+OPENSSL_EXPORT int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls,
+                                      BIO *pem_bio);
+
+
+// Deprecated functions.
+//
+// These functions are a compatibility layer over a subset of OpenSSL's PKCS#7
+// API. It intentionally does not implement the whole thing, only the minimum
+// needed to build cryptography.io.
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGNED;
+
+typedef struct {
+  STACK_OF(X509) *cert;
+  STACK_OF(X509_CRL) *crl;
+} PKCS7_SIGN_ENVELOPE;
+
+typedef void PKCS7_ENVELOPE;
+typedef void PKCS7_DIGEST;
+typedef void PKCS7_ENCRYPT;
+
+typedef struct {
+  uint8_t *ber_bytes;
+  size_t ber_len;
+
+  // Unlike OpenSSL, the following fields are immutable. They filled in when the
+  // object is parsed and ignored in serialization.
+  ASN1_OBJECT *type;
+  union {
+    char *ptr;
+    ASN1_OCTET_STRING *data;
+    PKCS7_SIGNED *sign;
+    PKCS7_ENVELOPE *enveloped;
+    PKCS7_SIGN_ENVELOPE *signed_and_enveloped;
+    PKCS7_DIGEST *digest;
+    PKCS7_ENCRYPT *encrypted;
+    ASN1_TYPE *other;
+  } d;
+} PKCS7;
+
+// d2i_PKCS7 parses a BER-encoded, PKCS#7 signed data ContentInfo structure from
+// |len| bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the
+// result is in |*out|. Note that, even if |*out| is already non-NULL on entry,
+// it will not be written to. Rather, a fresh |PKCS7| is allocated and the
+// previous one is freed. On successful exit, |*inp| is advanced past the BER
+// structure.  It returns the result or NULL on error.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
+                                size_t len);
+
+// d2i_PKCS7_bio behaves like |d2i_PKCS7| but reads the input from |bio|.  If
+// the length of the object is indefinite the full contents of |bio| are read.
+//
+// If the function fails then some unknown amount of data may have been read
+// from |bio|.
+OPENSSL_EXPORT PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out);
+
+// i2d_PKCS7 is a dummy function which copies the contents of |p7|. If |out| is
+// not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS7(const PKCS7 *p7, uint8_t **out);
+
+// i2d_PKCS7_bio writes |p7| to |bio|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7);
+
+// PKCS7_free releases memory associated with |p7|.
+OPENSSL_EXPORT void PKCS7_free(PKCS7 *p7);
+
+// PKCS7_type_is_data returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_data(const PKCS7 *p7);
+
+// PKCS7_type_is_digest returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_digest(const PKCS7 *p7);
+
+// PKCS7_type_is_encrypted returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_encrypted(const PKCS7 *p7);
+
+// PKCS7_type_is_enveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_enveloped(const PKCS7 *p7);
+
+// PKCS7_type_is_signed returns one. (We only supporte signed data
+// ContentInfos.)
+OPENSSL_EXPORT int PKCS7_type_is_signed(const PKCS7 *p7);
+
+// PKCS7_type_is_signedAndEnveloped returns zero.
+OPENSSL_EXPORT int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7);
+
+// PKCS7_DETACHED indicates that the PKCS#7 file specifies its data externally.
+#define PKCS7_DETACHED 0x40
+
+// The following flags cause |PKCS7_sign| to fail.
+#define PKCS7_TEXT 0x1
+#define PKCS7_NOCERTS 0x2
+#define PKCS7_NOSIGS 0x4
+#define PKCS7_NOCHAIN 0x8
+#define PKCS7_NOINTERN 0x10
+#define PKCS7_NOVERIFY 0x20
+#define PKCS7_BINARY 0x80
+#define PKCS7_NOATTR 0x100
+#define PKCS7_NOSMIMECAP 0x200
+#define PKCS7_STREAM 0x1000
+
+// PKCS7_sign assembles |certs| into a PKCS#7 signed data ContentInfo with
+// external data and no signatures. It returns a newly-allocated |PKCS7| on
+// success or NULL on error. |sign_cert| and |pkey| must be NULL. |data| is
+// ignored. |flags| must be equal to |PKCS7_DETACHED|.
+//
+// Note this function only implements a subset of the corresponding OpenSSL
+// function. It is provided for backwards compatibility only.
+OPENSSL_EXPORT PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey,
+                                 STACK_OF(X509) *certs, BIO *data, int flags);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS7, PKCS7_free)
+
+BSSL_NAMESPACE_END
+}  // extern C++
+#endif
+
+#define PKCS7_R_BAD_PKCS7_VERSION 100
+#define PKCS7_R_NOT_PKCS7_SIGNED_DATA 101
+#define PKCS7_R_NO_CERTIFICATES_INCLUDED 102
+#define PKCS7_R_NO_CRLS_INCLUDED 103
+
+#endif  // OPENSSL_HEADER_PKCS7_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h
new file mode 100644
index 0000000..c48a56f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h	
@@ -0,0 +1,269 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+
+#ifndef OPENSSL_HEADER_PKCS8_H
+#define OPENSSL_HEADER_PKCS8_H
+
+#include <openssl_grpc/base.h>
+#include <openssl_grpc/x509.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS8_encrypt serializes and encrypts a PKCS8_PRIV_KEY_INFO with PBES1 or
+// PBES2 as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, defined in PKCS
+// #12, and PBES2, are supported.  PBES2 is selected by setting |cipher| and
+// passing -1 for |pbe_nid|.  Otherwise, PBES1 is used and |cipher| is ignored.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// If |salt| is NULL, a random salt of |salt_len| bytes is generated. If
+// |salt_len| is zero, a default salt length is used instead.
+//
+// The resulting structure is stored in an |X509_SIG| which must be freed by the
+// caller.
+OPENSSL_EXPORT X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher,
+                                       const char *pass, int pass_len,
+                                       const uint8_t *salt, size_t salt_len,
+                                       int iterations,
+                                       PKCS8_PRIV_KEY_INFO *p8inf);
+
+// PKCS8_marshal_encrypted_private_key behaves like |PKCS8_encrypt| but encrypts
+// an |EVP_PKEY| and writes the serialized EncryptedPrivateKeyInfo to |out|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS8_marshal_encrypted_private_key(
+    CBB *out, int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
+    size_t pass_len, const uint8_t *salt, size_t salt_len, int iterations,
+    const EVP_PKEY *pkey);
+
+// PKCS8_decrypt decrypts and decodes a PKCS8_PRIV_KEY_INFO with PBES1 or PBES2
+// as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, and PBES2,
+// defined in PKCS #12, are supported.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// The resulting structure must be freed by the caller.
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8,
+                                                  const char *pass,
+                                                  int pass_len);
+
+// PKCS8_parse_encrypted_private_key behaves like |PKCS8_decrypt| but it parses
+// the EncryptedPrivateKeyInfo structure from |cbs| and advances |cbs|. It
+// returns a newly-allocated |EVP_PKEY| on success and zero on error.
+OPENSSL_EXPORT EVP_PKEY *PKCS8_parse_encrypted_private_key(CBS *cbs,
+                                                           const char *pass,
+                                                           size_t pass_len);
+
+// PKCS12_get_key_and_certs parses a PKCS#12 structure from |in|, authenticates
+// and decrypts it using |password|, sets |*out_key| to the included private
+// key and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. The caller takes ownership of the outputs.
+OPENSSL_EXPORT int PKCS12_get_key_and_certs(EVP_PKEY **out_key,
+                                            STACK_OF(X509) *out_certs,
+                                            CBS *in, const char *password);
+
+
+// Deprecated functions.
+
+// PKCS12_PBE_add does nothing. It exists for compatibility with OpenSSL.
+OPENSSL_EXPORT void PKCS12_PBE_add(void);
+
+// d2i_PKCS12 is a dummy function that copies |*ber_bytes| into a
+// |PKCS12| structure. The |out_p12| argument should be NULL(✝). On exit,
+// |*ber_bytes| will be advanced by |ber_len|. It returns a fresh |PKCS12|
+// structure or NULL on error.
+//
+// Note: unlike other d2i functions, |d2i_PKCS12| will always consume |ber_len|
+// bytes.
+//
+// (✝) If |out_p12| is not NULL and the function is successful, |*out_p12| will
+// be freed if not NULL itself and the result will be written to |*out_p12|.
+// New code should not depend on this.
+OPENSSL_EXPORT PKCS12 *d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes,
+                                  size_t ber_len);
+
+// d2i_PKCS12_bio acts like |d2i_PKCS12| but reads from a |BIO|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12);
+
+// d2i_PKCS12_fp acts like |d2i_PKCS12| but reads from a |FILE|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12);
+
+// i2d_PKCS12 is a dummy function which copies the contents of |p12|. If |out|
+// is not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS12(const PKCS12 *p12, uint8_t **out);
+
+// i2d_PKCS12_bio writes the contents of |p12| to |bio|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_bio(BIO *bio, const PKCS12 *p12);
+
+// i2d_PKCS12_fp writes the contents of |p12| to |fp|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12);
+
+// PKCS12_parse calls |PKCS12_get_key_and_certs| on the ASN.1 data stored in
+// |p12|. The |out_pkey| and |out_cert| arguments must not be NULL and, on
+// successful exit, the private key and matching certificate will be stored in
+// them. The |out_ca_certs| argument may be NULL but, if not, then any extra
+// certificates will be appended to |*out_ca_certs|. If |*out_ca_certs| is NULL
+// then it will be set to a freshly allocated stack containing the extra certs.
+//
+// Note if |p12| does not contain a private key, both |*out_pkey| and
+// |*out_cert| will be set to NULL and all certificates will be returned via
+// |*out_ca_certs|.
+//
+// It returns one on success and zero on error.
+//
+// Use |PKCS12_get_key_and_certs| instead.
+OPENSSL_EXPORT int PKCS12_parse(const PKCS12 *p12, const char *password,
+                                EVP_PKEY **out_pkey, X509 **out_cert,
+                                STACK_OF(X509) **out_ca_certs);
+
+// PKCS12_verify_mac returns one if |password| is a valid password for |p12|
+// and zero otherwise. Since |PKCS12_parse| doesn't take a length parameter,
+// it's not actually possible to use a non-NUL-terminated password to actually
+// get anything from a |PKCS12|. Thus |password| and |password_len| may be
+// |NULL| and zero, respectively, or else |password_len| may be -1, or else
+// |password[password_len]| must be zero and no other NUL bytes may appear in
+// |password|. If the |password_len| checks fail, zero is returned
+// immediately.
+OPENSSL_EXPORT int PKCS12_verify_mac(const PKCS12 *p12, const char *password,
+                                     int password_len);
+
+// PKCS12_create returns a newly-allocated |PKCS12| object containing |pkey|,
+// |cert|, and |chain|, encrypted with the specified password. |name|, if not
+// NULL, specifies a user-friendly name to encode with the key and
+// certificate. The key and certificates are encrypted with |key_nid| and
+// |cert_nid|, respectively, using |iterations| iterations in the
+// KDF. |mac_iterations| is the number of iterations when deriving the MAC
+// key. |key_type| must be zero. |pkey| and |cert| may be NULL to omit them.
+//
+// Each of |key_nid|, |cert_nid|, |iterations|, and |mac_iterations| may be zero
+// to use defaults, which are |NID_pbe_WithSHA1And3_Key_TripleDES_CBC|,
+// |NID_pbe_WithSHA1And40BitRC2_CBC|, 2048, and one, respectively.
+OPENSSL_EXPORT PKCS12 *PKCS12_create(const char *password, const char *name,
+                                     const EVP_PKEY *pkey, X509 *cert,
+                                     const STACK_OF(X509) *chain, int key_nid,
+                                     int cert_nid, int iterations,
+                                     int mac_iterations, int key_type);
+
+// PKCS12_free frees |p12| and its contents.
+OPENSSL_EXPORT void PKCS12_free(PKCS12 *p12);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS12, PKCS12_free)
+BORINGSSL_MAKE_DELETER(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define PKCS8_R_BAD_PKCS12_DATA 100
+#define PKCS8_R_BAD_PKCS12_VERSION 101
+#define PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER 102
+#define PKCS8_R_CRYPT_ERROR 103
+#define PKCS8_R_DECODE_ERROR 104
+#define PKCS8_R_ENCODE_ERROR 105
+#define PKCS8_R_ENCRYPT_ERROR 106
+#define PKCS8_R_ERROR_SETTING_CIPHER_PARAMS 107
+#define PKCS8_R_INCORRECT_PASSWORD 108
+#define PKCS8_R_KEYGEN_FAILURE 109
+#define PKCS8_R_KEY_GEN_ERROR 110
+#define PKCS8_R_METHOD_NOT_SUPPORTED 111
+#define PKCS8_R_MISSING_MAC 112
+#define PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12 113
+#define PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED 114
+#define PKCS8_R_PKCS12_TOO_DEEPLY_NESTED 115
+#define PKCS8_R_PRIVATE_KEY_DECODE_ERROR 116
+#define PKCS8_R_PRIVATE_KEY_ENCODE_ERROR 117
+#define PKCS8_R_TOO_LONG 118
+#define PKCS8_R_UNKNOWN_ALGORITHM 119
+#define PKCS8_R_UNKNOWN_CIPHER 120
+#define PKCS8_R_UNKNOWN_CIPHER_ALGORITHM 121
+#define PKCS8_R_UNKNOWN_DIGEST 122
+#define PKCS8_R_UNKNOWN_HASH 123
+#define PKCS8_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM 124
+#define PKCS8_R_UNSUPPORTED_KEYLENGTH 125
+#define PKCS8_R_UNSUPPORTED_SALT_TYPE 126
+#define PKCS8_R_UNSUPPORTED_CIPHER 127
+#define PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION 128
+#define PKCS8_R_BAD_ITERATION_COUNT 129
+#define PKCS8_R_UNSUPPORTED_PRF 130
+#define PKCS8_R_INVALID_CHARACTERS 131
+#define PKCS8_R_UNSUPPORTED_OPTIONS 132
+
+#endif  // OPENSSL_HEADER_PKCS8_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.back
new file mode 100644
index 0000000..385b995
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.back	
@@ -0,0 +1,269 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+
+#ifndef OPENSSL_HEADER_PKCS8_H
+#define OPENSSL_HEADER_PKCS8_H
+
+#include <openssl/base.h>
+#include <openssl/x509.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS8_encrypt serializes and encrypts a PKCS8_PRIV_KEY_INFO with PBES1 or
+// PBES2 as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, defined in PKCS
+// #12, and PBES2, are supported.  PBES2 is selected by setting |cipher| and
+// passing -1 for |pbe_nid|.  Otherwise, PBES1 is used and |cipher| is ignored.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// If |salt| is NULL, a random salt of |salt_len| bytes is generated. If
+// |salt_len| is zero, a default salt length is used instead.
+//
+// The resulting structure is stored in an |X509_SIG| which must be freed by the
+// caller.
+OPENSSL_EXPORT X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher,
+                                       const char *pass, int pass_len,
+                                       const uint8_t *salt, size_t salt_len,
+                                       int iterations,
+                                       PKCS8_PRIV_KEY_INFO *p8inf);
+
+// PKCS8_marshal_encrypted_private_key behaves like |PKCS8_encrypt| but encrypts
+// an |EVP_PKEY| and writes the serialized EncryptedPrivateKeyInfo to |out|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS8_marshal_encrypted_private_key(
+    CBB *out, int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
+    size_t pass_len, const uint8_t *salt, size_t salt_len, int iterations,
+    const EVP_PKEY *pkey);
+
+// PKCS8_decrypt decrypts and decodes a PKCS8_PRIV_KEY_INFO with PBES1 or PBES2
+// as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, and PBES2,
+// defined in PKCS #12, are supported.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// The resulting structure must be freed by the caller.
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8,
+                                                  const char *pass,
+                                                  int pass_len);
+
+// PKCS8_parse_encrypted_private_key behaves like |PKCS8_decrypt| but it parses
+// the EncryptedPrivateKeyInfo structure from |cbs| and advances |cbs|. It
+// returns a newly-allocated |EVP_PKEY| on success and zero on error.
+OPENSSL_EXPORT EVP_PKEY *PKCS8_parse_encrypted_private_key(CBS *cbs,
+                                                           const char *pass,
+                                                           size_t pass_len);
+
+// PKCS12_get_key_and_certs parses a PKCS#12 structure from |in|, authenticates
+// and decrypts it using |password|, sets |*out_key| to the included private
+// key and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. The caller takes ownership of the outputs.
+OPENSSL_EXPORT int PKCS12_get_key_and_certs(EVP_PKEY **out_key,
+                                            STACK_OF(X509) *out_certs,
+                                            CBS *in, const char *password);
+
+
+// Deprecated functions.
+
+// PKCS12_PBE_add does nothing. It exists for compatibility with OpenSSL.
+OPENSSL_EXPORT void PKCS12_PBE_add(void);
+
+// d2i_PKCS12 is a dummy function that copies |*ber_bytes| into a
+// |PKCS12| structure. The |out_p12| argument should be NULL(✝). On exit,
+// |*ber_bytes| will be advanced by |ber_len|. It returns a fresh |PKCS12|
+// structure or NULL on error.
+//
+// Note: unlike other d2i functions, |d2i_PKCS12| will always consume |ber_len|
+// bytes.
+//
+// (✝) If |out_p12| is not NULL and the function is successful, |*out_p12| will
+// be freed if not NULL itself and the result will be written to |*out_p12|.
+// New code should not depend on this.
+OPENSSL_EXPORT PKCS12 *d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes,
+                                  size_t ber_len);
+
+// d2i_PKCS12_bio acts like |d2i_PKCS12| but reads from a |BIO|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12);
+
+// d2i_PKCS12_fp acts like |d2i_PKCS12| but reads from a |FILE|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12);
+
+// i2d_PKCS12 is a dummy function which copies the contents of |p12|. If |out|
+// is not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS12(const PKCS12 *p12, uint8_t **out);
+
+// i2d_PKCS12_bio writes the contents of |p12| to |bio|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_bio(BIO *bio, const PKCS12 *p12);
+
+// i2d_PKCS12_fp writes the contents of |p12| to |fp|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12);
+
+// PKCS12_parse calls |PKCS12_get_key_and_certs| on the ASN.1 data stored in
+// |p12|. The |out_pkey| and |out_cert| arguments must not be NULL and, on
+// successful exit, the private key and matching certificate will be stored in
+// them. The |out_ca_certs| argument may be NULL but, if not, then any extra
+// certificates will be appended to |*out_ca_certs|. If |*out_ca_certs| is NULL
+// then it will be set to a freshly allocated stack containing the extra certs.
+//
+// Note if |p12| does not contain a private key, both |*out_pkey| and
+// |*out_cert| will be set to NULL and all certificates will be returned via
+// |*out_ca_certs|.
+//
+// It returns one on success and zero on error.
+//
+// Use |PKCS12_get_key_and_certs| instead.
+OPENSSL_EXPORT int PKCS12_parse(const PKCS12 *p12, const char *password,
+                                EVP_PKEY **out_pkey, X509 **out_cert,
+                                STACK_OF(X509) **out_ca_certs);
+
+// PKCS12_verify_mac returns one if |password| is a valid password for |p12|
+// and zero otherwise. Since |PKCS12_parse| doesn't take a length parameter,
+// it's not actually possible to use a non-NUL-terminated password to actually
+// get anything from a |PKCS12|. Thus |password| and |password_len| may be
+// |NULL| and zero, respectively, or else |password_len| may be -1, or else
+// |password[password_len]| must be zero and no other NUL bytes may appear in
+// |password|. If the |password_len| checks fail, zero is returned
+// immediately.
+OPENSSL_EXPORT int PKCS12_verify_mac(const PKCS12 *p12, const char *password,
+                                     int password_len);
+
+// PKCS12_create returns a newly-allocated |PKCS12| object containing |pkey|,
+// |cert|, and |chain|, encrypted with the specified password. |name|, if not
+// NULL, specifies a user-friendly name to encode with the key and
+// certificate. The key and certificates are encrypted with |key_nid| and
+// |cert_nid|, respectively, using |iterations| iterations in the
+// KDF. |mac_iterations| is the number of iterations when deriving the MAC
+// key. |key_type| must be zero. |pkey| and |cert| may be NULL to omit them.
+//
+// Each of |key_nid|, |cert_nid|, |iterations|, and |mac_iterations| may be zero
+// to use defaults, which are |NID_pbe_WithSHA1And3_Key_TripleDES_CBC|,
+// |NID_pbe_WithSHA1And40BitRC2_CBC|, 2048, and one, respectively.
+OPENSSL_EXPORT PKCS12 *PKCS12_create(const char *password, const char *name,
+                                     const EVP_PKEY *pkey, X509 *cert,
+                                     const STACK_OF(X509) *chain, int key_nid,
+                                     int cert_nid, int iterations,
+                                     int mac_iterations, int key_type);
+
+// PKCS12_free frees |p12| and its contents.
+OPENSSL_EXPORT void PKCS12_free(PKCS12 *p12);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS12, PKCS12_free)
+BORINGSSL_MAKE_DELETER(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define PKCS8_R_BAD_PKCS12_DATA 100
+#define PKCS8_R_BAD_PKCS12_VERSION 101
+#define PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER 102
+#define PKCS8_R_CRYPT_ERROR 103
+#define PKCS8_R_DECODE_ERROR 104
+#define PKCS8_R_ENCODE_ERROR 105
+#define PKCS8_R_ENCRYPT_ERROR 106
+#define PKCS8_R_ERROR_SETTING_CIPHER_PARAMS 107
+#define PKCS8_R_INCORRECT_PASSWORD 108
+#define PKCS8_R_KEYGEN_FAILURE 109
+#define PKCS8_R_KEY_GEN_ERROR 110
+#define PKCS8_R_METHOD_NOT_SUPPORTED 111
+#define PKCS8_R_MISSING_MAC 112
+#define PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12 113
+#define PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED 114
+#define PKCS8_R_PKCS12_TOO_DEEPLY_NESTED 115
+#define PKCS8_R_PRIVATE_KEY_DECODE_ERROR 116
+#define PKCS8_R_PRIVATE_KEY_ENCODE_ERROR 117
+#define PKCS8_R_TOO_LONG 118
+#define PKCS8_R_UNKNOWN_ALGORITHM 119
+#define PKCS8_R_UNKNOWN_CIPHER 120
+#define PKCS8_R_UNKNOWN_CIPHER_ALGORITHM 121
+#define PKCS8_R_UNKNOWN_DIGEST 122
+#define PKCS8_R_UNKNOWN_HASH 123
+#define PKCS8_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM 124
+#define PKCS8_R_UNSUPPORTED_KEYLENGTH 125
+#define PKCS8_R_UNSUPPORTED_SALT_TYPE 126
+#define PKCS8_R_UNSUPPORTED_CIPHER 127
+#define PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION 128
+#define PKCS8_R_BAD_ITERATION_COUNT 129
+#define PKCS8_R_UNSUPPORTED_PRF 130
+#define PKCS8_R_INVALID_CHARACTERS 131
+#define PKCS8_R_UNSUPPORTED_OPTIONS 132
+
+#endif  // OPENSSL_HEADER_PKCS8_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.grpc_back
new file mode 100644
index 0000000..385b995
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pkcs8.h.grpc_back	
@@ -0,0 +1,269 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+
+#ifndef OPENSSL_HEADER_PKCS8_H
+#define OPENSSL_HEADER_PKCS8_H
+
+#include <openssl/base.h>
+#include <openssl/x509.h>
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// PKCS8_encrypt serializes and encrypts a PKCS8_PRIV_KEY_INFO with PBES1 or
+// PBES2 as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, defined in PKCS
+// #12, and PBES2, are supported.  PBES2 is selected by setting |cipher| and
+// passing -1 for |pbe_nid|.  Otherwise, PBES1 is used and |cipher| is ignored.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// If |salt| is NULL, a random salt of |salt_len| bytes is generated. If
+// |salt_len| is zero, a default salt length is used instead.
+//
+// The resulting structure is stored in an |X509_SIG| which must be freed by the
+// caller.
+OPENSSL_EXPORT X509_SIG *PKCS8_encrypt(int pbe_nid, const EVP_CIPHER *cipher,
+                                       const char *pass, int pass_len,
+                                       const uint8_t *salt, size_t salt_len,
+                                       int iterations,
+                                       PKCS8_PRIV_KEY_INFO *p8inf);
+
+// PKCS8_marshal_encrypted_private_key behaves like |PKCS8_encrypt| but encrypts
+// an |EVP_PKEY| and writes the serialized EncryptedPrivateKeyInfo to |out|. It
+// returns one on success and zero on error.
+OPENSSL_EXPORT int PKCS8_marshal_encrypted_private_key(
+    CBB *out, int pbe_nid, const EVP_CIPHER *cipher, const char *pass,
+    size_t pass_len, const uint8_t *salt, size_t salt_len, int iterations,
+    const EVP_PKEY *pkey);
+
+// PKCS8_decrypt decrypts and decodes a PKCS8_PRIV_KEY_INFO with PBES1 or PBES2
+// as defined in PKCS #5. Only pbeWithSHAAnd128BitRC4,
+// pbeWithSHAAnd3-KeyTripleDES-CBC and pbeWithSHA1And40BitRC2, and PBES2,
+// defined in PKCS #12, are supported.
+//
+// |pass| is used as the password. If a PBES1 scheme from PKCS #12 is used, this
+// will be converted to a raw byte string as specified in B.1 of PKCS #12. If
+// |pass| is NULL, it will be encoded as the empty byte string rather than two
+// zero bytes, the PKCS #12 encoding of the empty string.
+//
+// The resulting structure must be freed by the caller.
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_decrypt(X509_SIG *pkcs8,
+                                                  const char *pass,
+                                                  int pass_len);
+
+// PKCS8_parse_encrypted_private_key behaves like |PKCS8_decrypt| but it parses
+// the EncryptedPrivateKeyInfo structure from |cbs| and advances |cbs|. It
+// returns a newly-allocated |EVP_PKEY| on success and zero on error.
+OPENSSL_EXPORT EVP_PKEY *PKCS8_parse_encrypted_private_key(CBS *cbs,
+                                                           const char *pass,
+                                                           size_t pass_len);
+
+// PKCS12_get_key_and_certs parses a PKCS#12 structure from |in|, authenticates
+// and decrypts it using |password|, sets |*out_key| to the included private
+// key and appends the included certificates to |out_certs|. It returns one on
+// success and zero on error. The caller takes ownership of the outputs.
+OPENSSL_EXPORT int PKCS12_get_key_and_certs(EVP_PKEY **out_key,
+                                            STACK_OF(X509) *out_certs,
+                                            CBS *in, const char *password);
+
+
+// Deprecated functions.
+
+// PKCS12_PBE_add does nothing. It exists for compatibility with OpenSSL.
+OPENSSL_EXPORT void PKCS12_PBE_add(void);
+
+// d2i_PKCS12 is a dummy function that copies |*ber_bytes| into a
+// |PKCS12| structure. The |out_p12| argument should be NULL(✝). On exit,
+// |*ber_bytes| will be advanced by |ber_len|. It returns a fresh |PKCS12|
+// structure or NULL on error.
+//
+// Note: unlike other d2i functions, |d2i_PKCS12| will always consume |ber_len|
+// bytes.
+//
+// (✝) If |out_p12| is not NULL and the function is successful, |*out_p12| will
+// be freed if not NULL itself and the result will be written to |*out_p12|.
+// New code should not depend on this.
+OPENSSL_EXPORT PKCS12 *d2i_PKCS12(PKCS12 **out_p12, const uint8_t **ber_bytes,
+                                  size_t ber_len);
+
+// d2i_PKCS12_bio acts like |d2i_PKCS12| but reads from a |BIO|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_bio(BIO *bio, PKCS12 **out_p12);
+
+// d2i_PKCS12_fp acts like |d2i_PKCS12| but reads from a |FILE|.
+OPENSSL_EXPORT PKCS12* d2i_PKCS12_fp(FILE *fp, PKCS12 **out_p12);
+
+// i2d_PKCS12 is a dummy function which copies the contents of |p12|. If |out|
+// is not NULL then the result is written to |*out| and |*out| is advanced just
+// past the output. It returns the number of bytes in the result, whether
+// written or not, or a negative value on error.
+OPENSSL_EXPORT int i2d_PKCS12(const PKCS12 *p12, uint8_t **out);
+
+// i2d_PKCS12_bio writes the contents of |p12| to |bio|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_bio(BIO *bio, const PKCS12 *p12);
+
+// i2d_PKCS12_fp writes the contents of |p12| to |fp|. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int i2d_PKCS12_fp(FILE *fp, const PKCS12 *p12);
+
+// PKCS12_parse calls |PKCS12_get_key_and_certs| on the ASN.1 data stored in
+// |p12|. The |out_pkey| and |out_cert| arguments must not be NULL and, on
+// successful exit, the private key and matching certificate will be stored in
+// them. The |out_ca_certs| argument may be NULL but, if not, then any extra
+// certificates will be appended to |*out_ca_certs|. If |*out_ca_certs| is NULL
+// then it will be set to a freshly allocated stack containing the extra certs.
+//
+// Note if |p12| does not contain a private key, both |*out_pkey| and
+// |*out_cert| will be set to NULL and all certificates will be returned via
+// |*out_ca_certs|.
+//
+// It returns one on success and zero on error.
+//
+// Use |PKCS12_get_key_and_certs| instead.
+OPENSSL_EXPORT int PKCS12_parse(const PKCS12 *p12, const char *password,
+                                EVP_PKEY **out_pkey, X509 **out_cert,
+                                STACK_OF(X509) **out_ca_certs);
+
+// PKCS12_verify_mac returns one if |password| is a valid password for |p12|
+// and zero otherwise. Since |PKCS12_parse| doesn't take a length parameter,
+// it's not actually possible to use a non-NUL-terminated password to actually
+// get anything from a |PKCS12|. Thus |password| and |password_len| may be
+// |NULL| and zero, respectively, or else |password_len| may be -1, or else
+// |password[password_len]| must be zero and no other NUL bytes may appear in
+// |password|. If the |password_len| checks fail, zero is returned
+// immediately.
+OPENSSL_EXPORT int PKCS12_verify_mac(const PKCS12 *p12, const char *password,
+                                     int password_len);
+
+// PKCS12_create returns a newly-allocated |PKCS12| object containing |pkey|,
+// |cert|, and |chain|, encrypted with the specified password. |name|, if not
+// NULL, specifies a user-friendly name to encode with the key and
+// certificate. The key and certificates are encrypted with |key_nid| and
+// |cert_nid|, respectively, using |iterations| iterations in the
+// KDF. |mac_iterations| is the number of iterations when deriving the MAC
+// key. |key_type| must be zero. |pkey| and |cert| may be NULL to omit them.
+//
+// Each of |key_nid|, |cert_nid|, |iterations|, and |mac_iterations| may be zero
+// to use defaults, which are |NID_pbe_WithSHA1And3_Key_TripleDES_CBC|,
+// |NID_pbe_WithSHA1And40BitRC2_CBC|, 2048, and one, respectively.
+OPENSSL_EXPORT PKCS12 *PKCS12_create(const char *password, const char *name,
+                                     const EVP_PKEY *pkey, X509 *cert,
+                                     const STACK_OF(X509) *chain, int key_nid,
+                                     int cert_nid, int iterations,
+                                     int mac_iterations, int key_type);
+
+// PKCS12_free frees |p12| and its contents.
+OPENSSL_EXPORT void PKCS12_free(PKCS12 *p12);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(PKCS12, PKCS12_free)
+BORINGSSL_MAKE_DELETER(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_free)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define PKCS8_R_BAD_PKCS12_DATA 100
+#define PKCS8_R_BAD_PKCS12_VERSION 101
+#define PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER 102
+#define PKCS8_R_CRYPT_ERROR 103
+#define PKCS8_R_DECODE_ERROR 104
+#define PKCS8_R_ENCODE_ERROR 105
+#define PKCS8_R_ENCRYPT_ERROR 106
+#define PKCS8_R_ERROR_SETTING_CIPHER_PARAMS 107
+#define PKCS8_R_INCORRECT_PASSWORD 108
+#define PKCS8_R_KEYGEN_FAILURE 109
+#define PKCS8_R_KEY_GEN_ERROR 110
+#define PKCS8_R_METHOD_NOT_SUPPORTED 111
+#define PKCS8_R_MISSING_MAC 112
+#define PKCS8_R_MULTIPLE_PRIVATE_KEYS_IN_PKCS12 113
+#define PKCS8_R_PKCS12_PUBLIC_KEY_INTEGRITY_NOT_SUPPORTED 114
+#define PKCS8_R_PKCS12_TOO_DEEPLY_NESTED 115
+#define PKCS8_R_PRIVATE_KEY_DECODE_ERROR 116
+#define PKCS8_R_PRIVATE_KEY_ENCODE_ERROR 117
+#define PKCS8_R_TOO_LONG 118
+#define PKCS8_R_UNKNOWN_ALGORITHM 119
+#define PKCS8_R_UNKNOWN_CIPHER 120
+#define PKCS8_R_UNKNOWN_CIPHER_ALGORITHM 121
+#define PKCS8_R_UNKNOWN_DIGEST 122
+#define PKCS8_R_UNKNOWN_HASH 123
+#define PKCS8_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM 124
+#define PKCS8_R_UNSUPPORTED_KEYLENGTH 125
+#define PKCS8_R_UNSUPPORTED_SALT_TYPE 126
+#define PKCS8_R_UNSUPPORTED_CIPHER 127
+#define PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION 128
+#define PKCS8_R_BAD_ITERATION_COUNT 129
+#define PKCS8_R_UNSUPPORTED_PRF 130
+#define PKCS8_R_INVALID_CHARACTERS 131
+#define PKCS8_R_UNSUPPORTED_OPTIONS 132
+
+#endif  // OPENSSL_HEADER_PKCS8_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h
new file mode 100644
index 0000000..e488238
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h	
@@ -0,0 +1,49 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POLY1305_H
+#define OPENSSL_HEADER_POLY1305_H
+
+#include <openssl_grpc/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+typedef uint8_t poly1305_state[512];
+
+// CRYPTO_poly1305_init sets up |state| so that it can be used to calculate an
+// authentication tag with the one-time key |key|. Note that |key| is a
+// one-time key and therefore there is no `reset' method because that would
+// enable several messages to be authenticated with the same key.
+OPENSSL_EXPORT void CRYPTO_poly1305_init(poly1305_state *state,
+                                         const uint8_t key[32]);
+
+// CRYPTO_poly1305_update processes |in_len| bytes from |in|. It can be called
+// zero or more times after poly1305_init.
+OPENSSL_EXPORT void CRYPTO_poly1305_update(poly1305_state *state,
+                                           const uint8_t *in, size_t in_len);
+
+// CRYPTO_poly1305_finish completes the poly1305 calculation and writes a 16
+// byte authentication tag to |mac|.
+OPENSSL_EXPORT void CRYPTO_poly1305_finish(poly1305_state *state,
+                                           uint8_t mac[16]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POLY1305_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.back
new file mode 100644
index 0000000..a38ef21
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.back	
@@ -0,0 +1,49 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POLY1305_H
+#define OPENSSL_HEADER_POLY1305_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+typedef uint8_t poly1305_state[512];
+
+// CRYPTO_poly1305_init sets up |state| so that it can be used to calculate an
+// authentication tag with the one-time key |key|. Note that |key| is a
+// one-time key and therefore there is no `reset' method because that would
+// enable several messages to be authenticated with the same key.
+OPENSSL_EXPORT void CRYPTO_poly1305_init(poly1305_state *state,
+                                         const uint8_t key[32]);
+
+// CRYPTO_poly1305_update processes |in_len| bytes from |in|. It can be called
+// zero or more times after poly1305_init.
+OPENSSL_EXPORT void CRYPTO_poly1305_update(poly1305_state *state,
+                                           const uint8_t *in, size_t in_len);
+
+// CRYPTO_poly1305_finish completes the poly1305 calculation and writes a 16
+// byte authentication tag to |mac|.
+OPENSSL_EXPORT void CRYPTO_poly1305_finish(poly1305_state *state,
+                                           uint8_t mac[16]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POLY1305_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.grpc_back
new file mode 100644
index 0000000..a38ef21
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/poly1305.h.grpc_back	
@@ -0,0 +1,49 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POLY1305_H
+#define OPENSSL_HEADER_POLY1305_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+typedef uint8_t poly1305_state[512];
+
+// CRYPTO_poly1305_init sets up |state| so that it can be used to calculate an
+// authentication tag with the one-time key |key|. Note that |key| is a
+// one-time key and therefore there is no `reset' method because that would
+// enable several messages to be authenticated with the same key.
+OPENSSL_EXPORT void CRYPTO_poly1305_init(poly1305_state *state,
+                                         const uint8_t key[32]);
+
+// CRYPTO_poly1305_update processes |in_len| bytes from |in|. It can be called
+// zero or more times after poly1305_init.
+OPENSSL_EXPORT void CRYPTO_poly1305_update(poly1305_state *state,
+                                           const uint8_t *in, size_t in_len);
+
+// CRYPTO_poly1305_finish completes the poly1305 calculation and writes a 16
+// byte authentication tag to |mac|.
+OPENSSL_EXPORT void CRYPTO_poly1305_finish(poly1305_state *state,
+                                           uint8_t mac[16]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_POLY1305_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h
new file mode 100644
index 0000000..80f47c9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h	
@@ -0,0 +1,102 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POOL_H
+#define OPENSSL_HEADER_POOL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Buffers and buffer pools.
+//
+// |CRYPTO_BUFFER|s are simply reference-counted blobs. A |CRYPTO_BUFFER_POOL|
+// is an intern table for |CRYPTO_BUFFER|s. This allows for a single copy of a
+// given blob to be kept in memory and referenced from multiple places.
+
+
+DEFINE_STACK_OF(CRYPTO_BUFFER)
+
+// CRYPTO_BUFFER_POOL_new returns a freshly allocated |CRYPTO_BUFFER_POOL| or
+// NULL on error.
+OPENSSL_EXPORT CRYPTO_BUFFER_POOL* CRYPTO_BUFFER_POOL_new(void);
+
+// CRYPTO_BUFFER_POOL_free frees |pool|, which must be empty.
+OPENSSL_EXPORT void CRYPTO_BUFFER_POOL_free(CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_new returns a |CRYPTO_BUFFER| containing a copy of |data|, or
+// else NULL on error. If |pool| is not NULL then the returned value may be a
+// reference to a previously existing |CRYPTO_BUFFER| that contained the same
+// data. Otherwise, the returned, fresh |CRYPTO_BUFFER| will be added to the
+// pool.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new(const uint8_t *data, size_t len,
+                                                CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_alloc creates an unpooled |CRYPTO_BUFFER| of the given size and
+// writes the underlying data pointer to |*out_data|. It returns NULL on error.
+//
+// After calling this function, |len| bytes of contents must be written to
+// |out_data| before passing the returned pointer to any other BoringSSL
+// functions. Once initialized, the |CRYPTO_BUFFER| should be treated as
+// immutable.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_alloc(uint8_t **out_data,
+                                                  size_t len);
+
+// CRYPTO_BUFFER_new_from_CBS acts the same as |CRYPTO_BUFFER_new|.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new_from_CBS(
+    CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_free decrements the reference count of |buf|. If there are no
+// other references, or if the only remaining reference is from a pool, then
+// |buf| will be freed.
+OPENSSL_EXPORT void CRYPTO_BUFFER_free(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_up_ref increments the reference count of |buf| and returns
+// one.
+OPENSSL_EXPORT int CRYPTO_BUFFER_up_ref(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_data returns a pointer to the data contained in |buf|.
+OPENSSL_EXPORT const uint8_t *CRYPTO_BUFFER_data(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_len returns the length, in bytes, of the data contained in
+// |buf|.
+OPENSSL_EXPORT size_t CRYPTO_BUFFER_len(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_init_CBS initialises |out| to point at the data from |buf|.
+OPENSSL_EXPORT void CRYPTO_BUFFER_init_CBS(const CRYPTO_BUFFER *buf, CBS *out);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER_POOL, CRYPTO_BUFFER_POOL_free)
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER, CRYPTO_BUFFER_free)
+BORINGSSL_MAKE_UP_REF(CRYPTO_BUFFER, CRYPTO_BUFFER_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_POOL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.back
new file mode 100644
index 0000000..0e4bdd5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.back	
@@ -0,0 +1,102 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POOL_H
+#define OPENSSL_HEADER_POOL_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Buffers and buffer pools.
+//
+// |CRYPTO_BUFFER|s are simply reference-counted blobs. A |CRYPTO_BUFFER_POOL|
+// is an intern table for |CRYPTO_BUFFER|s. This allows for a single copy of a
+// given blob to be kept in memory and referenced from multiple places.
+
+
+DEFINE_STACK_OF(CRYPTO_BUFFER)
+
+// CRYPTO_BUFFER_POOL_new returns a freshly allocated |CRYPTO_BUFFER_POOL| or
+// NULL on error.
+OPENSSL_EXPORT CRYPTO_BUFFER_POOL* CRYPTO_BUFFER_POOL_new(void);
+
+// CRYPTO_BUFFER_POOL_free frees |pool|, which must be empty.
+OPENSSL_EXPORT void CRYPTO_BUFFER_POOL_free(CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_new returns a |CRYPTO_BUFFER| containing a copy of |data|, or
+// else NULL on error. If |pool| is not NULL then the returned value may be a
+// reference to a previously existing |CRYPTO_BUFFER| that contained the same
+// data. Otherwise, the returned, fresh |CRYPTO_BUFFER| will be added to the
+// pool.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new(const uint8_t *data, size_t len,
+                                                CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_alloc creates an unpooled |CRYPTO_BUFFER| of the given size and
+// writes the underlying data pointer to |*out_data|. It returns NULL on error.
+//
+// After calling this function, |len| bytes of contents must be written to
+// |out_data| before passing the returned pointer to any other BoringSSL
+// functions. Once initialized, the |CRYPTO_BUFFER| should be treated as
+// immutable.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_alloc(uint8_t **out_data,
+                                                  size_t len);
+
+// CRYPTO_BUFFER_new_from_CBS acts the same as |CRYPTO_BUFFER_new|.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new_from_CBS(
+    CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_free decrements the reference count of |buf|. If there are no
+// other references, or if the only remaining reference is from a pool, then
+// |buf| will be freed.
+OPENSSL_EXPORT void CRYPTO_BUFFER_free(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_up_ref increments the reference count of |buf| and returns
+// one.
+OPENSSL_EXPORT int CRYPTO_BUFFER_up_ref(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_data returns a pointer to the data contained in |buf|.
+OPENSSL_EXPORT const uint8_t *CRYPTO_BUFFER_data(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_len returns the length, in bytes, of the data contained in
+// |buf|.
+OPENSSL_EXPORT size_t CRYPTO_BUFFER_len(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_init_CBS initialises |out| to point at the data from |buf|.
+OPENSSL_EXPORT void CRYPTO_BUFFER_init_CBS(const CRYPTO_BUFFER *buf, CBS *out);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER_POOL, CRYPTO_BUFFER_POOL_free)
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER, CRYPTO_BUFFER_free)
+BORINGSSL_MAKE_UP_REF(CRYPTO_BUFFER, CRYPTO_BUFFER_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_POOL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.grpc_back
new file mode 100644
index 0000000..0e4bdd5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/pool.h.grpc_back	
@@ -0,0 +1,102 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_POOL_H
+#define OPENSSL_HEADER_POOL_H
+
+#include <openssl/base.h>
+
+#include <openssl/stack.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Buffers and buffer pools.
+//
+// |CRYPTO_BUFFER|s are simply reference-counted blobs. A |CRYPTO_BUFFER_POOL|
+// is an intern table for |CRYPTO_BUFFER|s. This allows for a single copy of a
+// given blob to be kept in memory and referenced from multiple places.
+
+
+DEFINE_STACK_OF(CRYPTO_BUFFER)
+
+// CRYPTO_BUFFER_POOL_new returns a freshly allocated |CRYPTO_BUFFER_POOL| or
+// NULL on error.
+OPENSSL_EXPORT CRYPTO_BUFFER_POOL* CRYPTO_BUFFER_POOL_new(void);
+
+// CRYPTO_BUFFER_POOL_free frees |pool|, which must be empty.
+OPENSSL_EXPORT void CRYPTO_BUFFER_POOL_free(CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_new returns a |CRYPTO_BUFFER| containing a copy of |data|, or
+// else NULL on error. If |pool| is not NULL then the returned value may be a
+// reference to a previously existing |CRYPTO_BUFFER| that contained the same
+// data. Otherwise, the returned, fresh |CRYPTO_BUFFER| will be added to the
+// pool.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new(const uint8_t *data, size_t len,
+                                                CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_alloc creates an unpooled |CRYPTO_BUFFER| of the given size and
+// writes the underlying data pointer to |*out_data|. It returns NULL on error.
+//
+// After calling this function, |len| bytes of contents must be written to
+// |out_data| before passing the returned pointer to any other BoringSSL
+// functions. Once initialized, the |CRYPTO_BUFFER| should be treated as
+// immutable.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_alloc(uint8_t **out_data,
+                                                  size_t len);
+
+// CRYPTO_BUFFER_new_from_CBS acts the same as |CRYPTO_BUFFER_new|.
+OPENSSL_EXPORT CRYPTO_BUFFER *CRYPTO_BUFFER_new_from_CBS(
+    CBS *cbs, CRYPTO_BUFFER_POOL *pool);
+
+// CRYPTO_BUFFER_free decrements the reference count of |buf|. If there are no
+// other references, or if the only remaining reference is from a pool, then
+// |buf| will be freed.
+OPENSSL_EXPORT void CRYPTO_BUFFER_free(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_up_ref increments the reference count of |buf| and returns
+// one.
+OPENSSL_EXPORT int CRYPTO_BUFFER_up_ref(CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_data returns a pointer to the data contained in |buf|.
+OPENSSL_EXPORT const uint8_t *CRYPTO_BUFFER_data(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_len returns the length, in bytes, of the data contained in
+// |buf|.
+OPENSSL_EXPORT size_t CRYPTO_BUFFER_len(const CRYPTO_BUFFER *buf);
+
+// CRYPTO_BUFFER_init_CBS initialises |out| to point at the data from |buf|.
+OPENSSL_EXPORT void CRYPTO_BUFFER_init_CBS(const CRYPTO_BUFFER *buf, CBS *out);
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER_POOL, CRYPTO_BUFFER_POOL_free)
+BORINGSSL_MAKE_DELETER(CRYPTO_BUFFER, CRYPTO_BUFFER_free)
+BORINGSSL_MAKE_UP_REF(CRYPTO_BUFFER, CRYPTO_BUFFER_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#endif  // OPENSSL_HEADER_POOL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h
new file mode 100644
index 0000000..7daecc2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h	
@@ -0,0 +1,125 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_RAND_H
+#define OPENSSL_HEADER_RAND_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Random number generation.
+
+
+// RAND_bytes writes |len| bytes of random data to |buf| and returns one.
+OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len);
+
+// RAND_cleanup frees any resources used by the RNG. This is not safe if other
+// threads might still be calling |RAND_bytes|.
+OPENSSL_EXPORT void RAND_cleanup(void);
+
+
+// Obscure functions.
+
+#if !defined(OPENSSL_WINDOWS)
+// RAND_set_urandom_fd causes the module to use a copy of |fd| for system
+// randomness rather opening /dev/urandom internally. The caller retains
+// ownership of |fd| and is at liberty to close it at any time. This is useful
+// if, due to a sandbox, /dev/urandom isn't available. If used, it must be
+// called before the first call to |RAND_bytes|, and it is mutually exclusive
+// with |RAND_enable_fork_unsafe_buffering|.
+//
+// |RAND_set_urandom_fd| does not buffer any entropy, so it is safe to call
+// |fork| at any time after calling |RAND_set_urandom_fd|.
+OPENSSL_EXPORT void RAND_set_urandom_fd(int fd);
+
+// RAND_enable_fork_unsafe_buffering enables efficient buffered reading of
+// /dev/urandom. It adds an overhead of a few KB of memory per thread. It must
+// be called before the first call to |RAND_bytes| and it is mutually exclusive
+// with calls to |RAND_set_urandom_fd|.
+//
+// If |fd| is non-negative then a copy of |fd| will be used rather than opening
+// /dev/urandom internally. Like |RAND_set_urandom_fd|, the caller retains
+// ownership of |fd|. If |fd| is negative then /dev/urandom will be opened and
+// any error from open(2) crashes the address space.
+//
+// It has an unusual name because the buffer is unsafe across calls to |fork|.
+// Hence, this function should never be called by libraries.
+OPENSSL_EXPORT void RAND_enable_fork_unsafe_buffering(int fd);
+#endif
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// RAND_reset_for_fuzzing resets the fuzzer-only deterministic RNG. This
+// function is only defined in the fuzzer-only build configuration.
+OPENSSL_EXPORT void RAND_reset_for_fuzzing(void);
+#endif
+
+
+// Deprecated functions
+
+// RAND_pseudo_bytes is a wrapper around |RAND_bytes|.
+OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len);
+
+// RAND_seed reads a single byte of random data to ensure that any file
+// descriptors etc are opened.
+OPENSSL_EXPORT void RAND_seed(const void *buf, int num);
+
+// RAND_load_file returns a nonnegative number.
+OPENSSL_EXPORT int RAND_load_file(const char *path, long num);
+
+// RAND_file_name returns NULL.
+OPENSSL_EXPORT const char *RAND_file_name(char *buf, size_t num);
+
+// RAND_add does nothing.
+OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy);
+
+// RAND_egd returns 255.
+OPENSSL_EXPORT int RAND_egd(const char *);
+
+// RAND_poll returns one.
+OPENSSL_EXPORT int RAND_poll(void);
+
+// RAND_status returns one.
+OPENSSL_EXPORT int RAND_status(void);
+
+// rand_meth_st is typedefed to |RAND_METHOD| in base.h. It isn't used; it
+// exists only to be the return type of |RAND_SSLeay|. It's
+// external so that variables of this type can be initialized.
+struct rand_meth_st {
+  void (*seed) (const void *buf, int num);
+  int (*bytes) (uint8_t *buf, size_t num);
+  void (*cleanup) (void);
+  void (*add) (const void *buf, int num, double entropy);
+  int (*pseudorand) (uint8_t *buf, size_t num);
+  int (*status) (void);
+};
+
+// RAND_SSLeay returns a pointer to a dummy |RAND_METHOD|.
+OPENSSL_EXPORT RAND_METHOD *RAND_SSLeay(void);
+
+// RAND_get_rand_method returns |RAND_SSLeay()|.
+OPENSSL_EXPORT const RAND_METHOD *RAND_get_rand_method(void);
+
+// RAND_set_rand_method does nothing.
+OPENSSL_EXPORT void RAND_set_rand_method(const RAND_METHOD *);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RAND_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.back
new file mode 100644
index 0000000..5d02e12
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.back	
@@ -0,0 +1,125 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_RAND_H
+#define OPENSSL_HEADER_RAND_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Random number generation.
+
+
+// RAND_bytes writes |len| bytes of random data to |buf| and returns one.
+OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len);
+
+// RAND_cleanup frees any resources used by the RNG. This is not safe if other
+// threads might still be calling |RAND_bytes|.
+OPENSSL_EXPORT void RAND_cleanup(void);
+
+
+// Obscure functions.
+
+#if !defined(OPENSSL_WINDOWS)
+// RAND_set_urandom_fd causes the module to use a copy of |fd| for system
+// randomness rather opening /dev/urandom internally. The caller retains
+// ownership of |fd| and is at liberty to close it at any time. This is useful
+// if, due to a sandbox, /dev/urandom isn't available. If used, it must be
+// called before the first call to |RAND_bytes|, and it is mutually exclusive
+// with |RAND_enable_fork_unsafe_buffering|.
+//
+// |RAND_set_urandom_fd| does not buffer any entropy, so it is safe to call
+// |fork| at any time after calling |RAND_set_urandom_fd|.
+OPENSSL_EXPORT void RAND_set_urandom_fd(int fd);
+
+// RAND_enable_fork_unsafe_buffering enables efficient buffered reading of
+// /dev/urandom. It adds an overhead of a few KB of memory per thread. It must
+// be called before the first call to |RAND_bytes| and it is mutually exclusive
+// with calls to |RAND_set_urandom_fd|.
+//
+// If |fd| is non-negative then a copy of |fd| will be used rather than opening
+// /dev/urandom internally. Like |RAND_set_urandom_fd|, the caller retains
+// ownership of |fd|. If |fd| is negative then /dev/urandom will be opened and
+// any error from open(2) crashes the address space.
+//
+// It has an unusual name because the buffer is unsafe across calls to |fork|.
+// Hence, this function should never be called by libraries.
+OPENSSL_EXPORT void RAND_enable_fork_unsafe_buffering(int fd);
+#endif
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// RAND_reset_for_fuzzing resets the fuzzer-only deterministic RNG. This
+// function is only defined in the fuzzer-only build configuration.
+OPENSSL_EXPORT void RAND_reset_for_fuzzing(void);
+#endif
+
+
+// Deprecated functions
+
+// RAND_pseudo_bytes is a wrapper around |RAND_bytes|.
+OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len);
+
+// RAND_seed reads a single byte of random data to ensure that any file
+// descriptors etc are opened.
+OPENSSL_EXPORT void RAND_seed(const void *buf, int num);
+
+// RAND_load_file returns a nonnegative number.
+OPENSSL_EXPORT int RAND_load_file(const char *path, long num);
+
+// RAND_file_name returns NULL.
+OPENSSL_EXPORT const char *RAND_file_name(char *buf, size_t num);
+
+// RAND_add does nothing.
+OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy);
+
+// RAND_egd returns 255.
+OPENSSL_EXPORT int RAND_egd(const char *);
+
+// RAND_poll returns one.
+OPENSSL_EXPORT int RAND_poll(void);
+
+// RAND_status returns one.
+OPENSSL_EXPORT int RAND_status(void);
+
+// rand_meth_st is typedefed to |RAND_METHOD| in base.h. It isn't used; it
+// exists only to be the return type of |RAND_SSLeay|. It's
+// external so that variables of this type can be initialized.
+struct rand_meth_st {
+  void (*seed) (const void *buf, int num);
+  int (*bytes) (uint8_t *buf, size_t num);
+  void (*cleanup) (void);
+  void (*add) (const void *buf, int num, double entropy);
+  int (*pseudorand) (uint8_t *buf, size_t num);
+  int (*status) (void);
+};
+
+// RAND_SSLeay returns a pointer to a dummy |RAND_METHOD|.
+OPENSSL_EXPORT RAND_METHOD *RAND_SSLeay(void);
+
+// RAND_get_rand_method returns |RAND_SSLeay()|.
+OPENSSL_EXPORT const RAND_METHOD *RAND_get_rand_method(void);
+
+// RAND_set_rand_method does nothing.
+OPENSSL_EXPORT void RAND_set_rand_method(const RAND_METHOD *);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RAND_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.grpc_back
new file mode 100644
index 0000000..5d02e12
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rand.h.grpc_back	
@@ -0,0 +1,125 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_RAND_H
+#define OPENSSL_HEADER_RAND_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Random number generation.
+
+
+// RAND_bytes writes |len| bytes of random data to |buf| and returns one.
+OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len);
+
+// RAND_cleanup frees any resources used by the RNG. This is not safe if other
+// threads might still be calling |RAND_bytes|.
+OPENSSL_EXPORT void RAND_cleanup(void);
+
+
+// Obscure functions.
+
+#if !defined(OPENSSL_WINDOWS)
+// RAND_set_urandom_fd causes the module to use a copy of |fd| for system
+// randomness rather opening /dev/urandom internally. The caller retains
+// ownership of |fd| and is at liberty to close it at any time. This is useful
+// if, due to a sandbox, /dev/urandom isn't available. If used, it must be
+// called before the first call to |RAND_bytes|, and it is mutually exclusive
+// with |RAND_enable_fork_unsafe_buffering|.
+//
+// |RAND_set_urandom_fd| does not buffer any entropy, so it is safe to call
+// |fork| at any time after calling |RAND_set_urandom_fd|.
+OPENSSL_EXPORT void RAND_set_urandom_fd(int fd);
+
+// RAND_enable_fork_unsafe_buffering enables efficient buffered reading of
+// /dev/urandom. It adds an overhead of a few KB of memory per thread. It must
+// be called before the first call to |RAND_bytes| and it is mutually exclusive
+// with calls to |RAND_set_urandom_fd|.
+//
+// If |fd| is non-negative then a copy of |fd| will be used rather than opening
+// /dev/urandom internally. Like |RAND_set_urandom_fd|, the caller retains
+// ownership of |fd|. If |fd| is negative then /dev/urandom will be opened and
+// any error from open(2) crashes the address space.
+//
+// It has an unusual name because the buffer is unsafe across calls to |fork|.
+// Hence, this function should never be called by libraries.
+OPENSSL_EXPORT void RAND_enable_fork_unsafe_buffering(int fd);
+#endif
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// RAND_reset_for_fuzzing resets the fuzzer-only deterministic RNG. This
+// function is only defined in the fuzzer-only build configuration.
+OPENSSL_EXPORT void RAND_reset_for_fuzzing(void);
+#endif
+
+
+// Deprecated functions
+
+// RAND_pseudo_bytes is a wrapper around |RAND_bytes|.
+OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len);
+
+// RAND_seed reads a single byte of random data to ensure that any file
+// descriptors etc are opened.
+OPENSSL_EXPORT void RAND_seed(const void *buf, int num);
+
+// RAND_load_file returns a nonnegative number.
+OPENSSL_EXPORT int RAND_load_file(const char *path, long num);
+
+// RAND_file_name returns NULL.
+OPENSSL_EXPORT const char *RAND_file_name(char *buf, size_t num);
+
+// RAND_add does nothing.
+OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy);
+
+// RAND_egd returns 255.
+OPENSSL_EXPORT int RAND_egd(const char *);
+
+// RAND_poll returns one.
+OPENSSL_EXPORT int RAND_poll(void);
+
+// RAND_status returns one.
+OPENSSL_EXPORT int RAND_status(void);
+
+// rand_meth_st is typedefed to |RAND_METHOD| in base.h. It isn't used; it
+// exists only to be the return type of |RAND_SSLeay|. It's
+// external so that variables of this type can be initialized.
+struct rand_meth_st {
+  void (*seed) (const void *buf, int num);
+  int (*bytes) (uint8_t *buf, size_t num);
+  void (*cleanup) (void);
+  void (*add) (const void *buf, int num, double entropy);
+  int (*pseudorand) (uint8_t *buf, size_t num);
+  int (*status) (void);
+};
+
+// RAND_SSLeay returns a pointer to a dummy |RAND_METHOD|.
+OPENSSL_EXPORT RAND_METHOD *RAND_SSLeay(void);
+
+// RAND_get_rand_method returns |RAND_SSLeay()|.
+OPENSSL_EXPORT const RAND_METHOD *RAND_get_rand_method(void);
+
+// RAND_set_rand_method does nothing.
+OPENSSL_EXPORT void RAND_set_rand_method(const RAND_METHOD *);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RAND_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h
new file mode 100644
index 0000000..1680e3a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RC4_H
+#define OPENSSL_HEADER_RC4_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// RC4.
+
+
+struct rc4_key_st {
+  uint32_t x, y;
+  uint32_t data[256];
+} /* RC4_KEY */;
+
+// RC4_set_key performs an RC4 key schedule and initialises |rc4key| with |len|
+// bytes of key material from |key|.
+OPENSSL_EXPORT void RC4_set_key(RC4_KEY *rc4key, unsigned len,
+                                const uint8_t *key);
+
+// RC4 encrypts (or decrypts, it's the same with RC4) |len| bytes from |in| to
+// |out|.
+OPENSSL_EXPORT void RC4(RC4_KEY *key, size_t len, const uint8_t *in,
+                        uint8_t *out);
+
+
+// Deprecated functions.
+
+// RC4_options returns the string "rc4(ptr,int)".
+OPENSSL_EXPORT const char *RC4_options(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RC4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.back
new file mode 100644
index 0000000..acf56ae
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.back	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RC4_H
+#define OPENSSL_HEADER_RC4_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// RC4.
+
+
+struct rc4_key_st {
+  uint32_t x, y;
+  uint32_t data[256];
+} /* RC4_KEY */;
+
+// RC4_set_key performs an RC4 key schedule and initialises |rc4key| with |len|
+// bytes of key material from |key|.
+OPENSSL_EXPORT void RC4_set_key(RC4_KEY *rc4key, unsigned len,
+                                const uint8_t *key);
+
+// RC4 encrypts (or decrypts, it's the same with RC4) |len| bytes from |in| to
+// |out|.
+OPENSSL_EXPORT void RC4(RC4_KEY *key, size_t len, const uint8_t *in,
+                        uint8_t *out);
+
+
+// Deprecated functions.
+
+// RC4_options returns the string "rc4(ptr,int)".
+OPENSSL_EXPORT const char *RC4_options(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RC4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.grpc_back
new file mode 100644
index 0000000..acf56ae
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rc4.h.grpc_back	
@@ -0,0 +1,96 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RC4_H
+#define OPENSSL_HEADER_RC4_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// RC4.
+
+
+struct rc4_key_st {
+  uint32_t x, y;
+  uint32_t data[256];
+} /* RC4_KEY */;
+
+// RC4_set_key performs an RC4 key schedule and initialises |rc4key| with |len|
+// bytes of key material from |key|.
+OPENSSL_EXPORT void RC4_set_key(RC4_KEY *rc4key, unsigned len,
+                                const uint8_t *key);
+
+// RC4 encrypts (or decrypts, it's the same with RC4) |len| bytes from |in| to
+// |out|.
+OPENSSL_EXPORT void RC4(RC4_KEY *key, size_t len, const uint8_t *in,
+                        uint8_t *out);
+
+
+// Deprecated functions.
+
+// RC4_options returns the string "rc4(ptr,int)".
+OPENSSL_EXPORT const char *RC4_options(void);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RC4_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h
new file mode 100644
index 0000000..40e25e2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RIPEMD_H
+#define OPENSSL_HEADER_RIPEMD_H
+
+#include <openssl_grpc/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+# define RIPEMD160_CBLOCK        64
+# define RIPEMD160_LBLOCK        (RIPEMD160_CBLOCK/4)
+# define RIPEMD160_DIGEST_LENGTH 20
+
+struct RIPEMD160state_st {
+  uint32_t h[5];
+  uint32_t Nl, Nh;
+  uint8_t data[RIPEMD160_CBLOCK];
+  unsigned num;
+};
+
+// RIPEMD160_Init initialises |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Init(RIPEMD160_CTX *ctx);
+
+// RIPEMD160_Update adds |len| bytes from |data| to |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Update(RIPEMD160_CTX *ctx, const void *data,
+                                   size_t len);
+
+// RIPEMD160_Final adds the final padding to |ctx| and writes the resulting
+// digest to |out|, which must have at least |RIPEMD160_DIGEST_LENGTH| bytes of
+// space. It returns one.
+OPENSSL_EXPORT int RIPEMD160_Final(uint8_t out[RIPEMD160_DIGEST_LENGTH],
+                                   RIPEMD160_CTX *ctx);
+
+// RIPEMD160 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |RIPEMD160_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *RIPEMD160(const uint8_t *data, size_t len,
+                                  uint8_t out[RIPEMD160_DIGEST_LENGTH]);
+
+// RIPEMD160_Transform is a low-level function that performs a single,
+// RIPEMD160 block transformation using the state from |ctx| and 64 bytes from
+// |block|.
+OPENSSL_EXPORT void RIPEMD160_Transform(RIPEMD160_CTX *ctx,
+                                        const uint8_t block[RIPEMD160_CBLOCK]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RIPEMD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.back
new file mode 100644
index 0000000..d859b1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.back	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RIPEMD_H
+#define OPENSSL_HEADER_RIPEMD_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+# define RIPEMD160_CBLOCK        64
+# define RIPEMD160_LBLOCK        (RIPEMD160_CBLOCK/4)
+# define RIPEMD160_DIGEST_LENGTH 20
+
+struct RIPEMD160state_st {
+  uint32_t h[5];
+  uint32_t Nl, Nh;
+  uint8_t data[RIPEMD160_CBLOCK];
+  unsigned num;
+};
+
+// RIPEMD160_Init initialises |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Init(RIPEMD160_CTX *ctx);
+
+// RIPEMD160_Update adds |len| bytes from |data| to |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Update(RIPEMD160_CTX *ctx, const void *data,
+                                   size_t len);
+
+// RIPEMD160_Final adds the final padding to |ctx| and writes the resulting
+// digest to |out|, which must have at least |RIPEMD160_DIGEST_LENGTH| bytes of
+// space. It returns one.
+OPENSSL_EXPORT int RIPEMD160_Final(uint8_t out[RIPEMD160_DIGEST_LENGTH],
+                                   RIPEMD160_CTX *ctx);
+
+// RIPEMD160 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |RIPEMD160_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *RIPEMD160(const uint8_t *data, size_t len,
+                                  uint8_t out[RIPEMD160_DIGEST_LENGTH]);
+
+// RIPEMD160_Transform is a low-level function that performs a single,
+// RIPEMD160 block transformation using the state from |ctx| and 64 bytes from
+// |block|.
+OPENSSL_EXPORT void RIPEMD160_Transform(RIPEMD160_CTX *ctx,
+                                        const uint8_t block[RIPEMD160_CBLOCK]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RIPEMD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.grpc_back
new file mode 100644
index 0000000..d859b1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ripemd.h.grpc_back	
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RIPEMD_H
+#define OPENSSL_HEADER_RIPEMD_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+# define RIPEMD160_CBLOCK        64
+# define RIPEMD160_LBLOCK        (RIPEMD160_CBLOCK/4)
+# define RIPEMD160_DIGEST_LENGTH 20
+
+struct RIPEMD160state_st {
+  uint32_t h[5];
+  uint32_t Nl, Nh;
+  uint8_t data[RIPEMD160_CBLOCK];
+  unsigned num;
+};
+
+// RIPEMD160_Init initialises |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Init(RIPEMD160_CTX *ctx);
+
+// RIPEMD160_Update adds |len| bytes from |data| to |ctx| and returns one.
+OPENSSL_EXPORT int RIPEMD160_Update(RIPEMD160_CTX *ctx, const void *data,
+                                   size_t len);
+
+// RIPEMD160_Final adds the final padding to |ctx| and writes the resulting
+// digest to |out|, which must have at least |RIPEMD160_DIGEST_LENGTH| bytes of
+// space. It returns one.
+OPENSSL_EXPORT int RIPEMD160_Final(uint8_t out[RIPEMD160_DIGEST_LENGTH],
+                                   RIPEMD160_CTX *ctx);
+
+// RIPEMD160 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |RIPEMD160_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *RIPEMD160(const uint8_t *data, size_t len,
+                                  uint8_t out[RIPEMD160_DIGEST_LENGTH]);
+
+// RIPEMD160_Transform is a low-level function that performs a single,
+// RIPEMD160 block transformation using the state from |ctx| and 64 bytes from
+// |block|.
+OPENSSL_EXPORT void RIPEMD160_Transform(RIPEMD160_CTX *ctx,
+                                        const uint8_t block[RIPEMD160_CBLOCK]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RIPEMD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h
new file mode 100644
index 0000000..03209f7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h	
@@ -0,0 +1,787 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RSA_H
+#define OPENSSL_HEADER_RSA_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/engine.h>
+#include <openssl_grpc/ex_data.h>
+#include <openssl_grpc/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// rsa.h contains functions for handling encryption and signature using RSA.
+
+
+// Allocation and destruction.
+//
+// An |RSA| object represents a public or private RSA key. A given object may be
+// used concurrently on multiple threads by non-mutating functions, provided no
+// other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// RSA_new returns a new, empty |RSA| object or NULL on error.
+OPENSSL_EXPORT RSA *RSA_new(void);
+
+// RSA_new_method acts the same as |RSA_new| but takes an explicit |ENGINE|.
+OPENSSL_EXPORT RSA *RSA_new_method(const ENGINE *engine);
+
+// RSA_free decrements the reference count of |rsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void RSA_free(RSA *rsa);
+
+// RSA_up_ref increments the reference count of |rsa| and returns one. It does
+// not mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_up_ref(RSA *rsa);
+
+
+// Properties.
+
+// RSA_bits returns the size of |rsa|, in bits.
+OPENSSL_EXPORT unsigned RSA_bits(const RSA *rsa);
+
+// RSA_get0_key sets |*out_n|, |*out_e|, and |*out_d|, if non-NULL, to |rsa|'s
+// modulus, public exponent, and private exponent, respectively. If |rsa| is a
+// public key, the private exponent will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_key(const RSA *rsa, const BIGNUM **out_n,
+                                 const BIGNUM **out_e, const BIGNUM **out_d);
+
+// RSA_get0_factors sets |*out_p| and |*out_q|, if non-NULL, to |rsa|'s prime
+// factors. If |rsa| is a public key, they will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_factors(const RSA *rsa, const BIGNUM **out_p,
+                                     const BIGNUM **out_q);
+
+// RSA_get0_crt_params sets |*out_dmp1|, |*out_dmq1|, and |*out_iqmp|, if
+// non-NULL, to |rsa|'s CRT parameters. These are d (mod p-1), d (mod q-1) and
+// q^-1 (mod p), respectively. If |rsa| is a public key, each parameter will be
+// set to NULL.
+OPENSSL_EXPORT void RSA_get0_crt_params(const RSA *rsa, const BIGNUM **out_dmp1,
+                                        const BIGNUM **out_dmq1,
+                                        const BIGNUM **out_iqmp);
+
+// RSA_set0_key sets |rsa|'s modulus, public exponent, and private exponent to
+// |n|, |e|, and |d| respectively, if non-NULL. On success, it takes ownership
+// of each argument and returns one. Otherwise, it returns zero.
+//
+// |d| may be NULL, but |n| and |e| must either be non-NULL or already
+// configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d);
+
+// RSA_set0_factors sets |rsa|'s prime factors to |p| and |q|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_factors(RSA *rsa, BIGNUM *p, BIGNUM *q);
+
+// RSA_set0_crt_params sets |rsa|'s CRT parameters to |dmp1|, |dmq1|, and
+// |iqmp|, if non-NULL, and takes ownership of them. On success, it takes
+// ownership of its parameters and returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_crt_params(RSA *rsa, BIGNUM *dmp1, BIGNUM *dmq1,
+                                       BIGNUM *iqmp);
+
+
+// Key generation.
+
+// RSA_generate_key_ex generates a new RSA key where the modulus has size
+// |bits| and the public exponent is |e|. If unsure, |RSA_F4| is a good value
+// for |e|. If |cb| is not NULL then it is called during the key generation
+// process. In addition to the calls documented for |BN_generate_prime_ex|, it
+// is called with event=2 when the n'th prime is rejected as unsuitable and
+// with event=3 when a suitable value for |p| is found.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
+                                       BN_GENCB *cb);
+
+// RSA_generate_key_fips behaves like |RSA_generate_key_ex| but performs
+// additional checks for FIPS compliance. The public exponent is always 65537
+// and |bits| must be either 2048 or 3072.
+OPENSSL_EXPORT int RSA_generate_key_fips(RSA *rsa, int bits, BN_GENCB *cb);
+
+
+// Encryption / Decryption
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_PKCS1_PADDING denotes PKCS#1 v1.5 padding. When used with encryption,
+// this is RSAES-PKCS1-v1_5. When used with signing, this is RSASSA-PKCS1-v1_5.
+#define RSA_PKCS1_PADDING 1
+
+// RSA_NO_PADDING denotes a raw RSA operation.
+#define RSA_NO_PADDING 3
+
+// RSA_PKCS1_OAEP_PADDING denotes the RSAES-OAEP encryption scheme.
+#define RSA_PKCS1_OAEP_PADDING 4
+
+// RSA_PKCS1_PSS_PADDING denotes the RSASSA-PSS signature scheme. This value may
+// not be passed into |RSA_sign_raw|, only |EVP_PKEY_CTX_set_rsa_padding|. See
+// also |RSA_sign_pss_mgf1| and |RSA_verify_pss_mgf1|.
+#define RSA_PKCS1_PSS_PADDING 6
+
+// RSA_encrypt encrypts |in_len| bytes from |in| to the public key from |rsa|
+// and writes, at most, |max_out| bytes of encrypted data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+OPENSSL_EXPORT int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_decrypt decrypts |in_len| bytes from |in| with the private key from
+// |rsa| and writes, at most, |max_out| bytes of plaintext to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols.
+//
+// Passing |RSA_PKCS1_PADDING| into this function is deprecated and insecure. If
+// implementing a protocol using RSAES-PKCS1-V1_5, use |RSA_NO_PADDING| and then
+// check padding in constant-time combined with a swap to a random session key
+// or other mitigation. See "Chosen Ciphertext Attacks Against Protocols Based
+// on the RSA Encryption Standard PKCS #1", Daniel Bleichenbacher, Advances in
+// Cryptology (Crypto '98).
+OPENSSL_EXPORT int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_public_encrypt encrypts |flen| bytes from |from| to the public key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_encrypt| instead.
+OPENSSL_EXPORT int RSA_public_encrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+// RSA_private_decrypt decrypts |flen| bytes from |from| with the public key in
+// |rsa| and writes the plaintext to |to|. The |to| buffer must have at least
+// |RSA_size| bytes of space. It returns the number of bytes written, or -1 on
+// error. The |padding| argument must be one of the |RSA_*_PADDING| values. If
+// in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols. Passing
+// |RSA_PKCS1_PADDING| into this function is deprecated and insecure. See
+// |RSA_decrypt|.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_decrypt| instead.
+OPENSSL_EXPORT int RSA_private_decrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+
+// Signing / Verification
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_sign signs |in_len| bytes of digest from |in| with |rsa| using
+// RSASSA-PKCS1-v1_5. It writes, at most, |RSA_size(rsa)| bytes to |out|. On
+// successful return, the actual number of bytes written is written to
+// |*out_len|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |in|
+// and is embedded in the resulting signature. For example, it might be
+// |NID_sha256|.
+//
+// It returns 1 on success and zero on error.
+OPENSSL_EXPORT int RSA_sign(int hash_nid, const uint8_t *in,
+                            unsigned int in_len, uint8_t *out,
+                            unsigned int *out_len, RSA *rsa);
+
+// RSA_sign_pss_mgf1 signs |in_len| bytes from |in| with the public key from
+// |rsa| using RSASSA-PSS with MGF1 as the mask generation function. It writes,
+// at most, |max_out| bytes of signature data to |out|. The |max_out| argument
+// must be, at least, |RSA_size| in order to ensure success. It returns 1 on
+// success or zero on error.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used.
+//
+// |salt_len| specifies the expected salt length in bytes. If |salt_len| is -1,
+// then the salt length is the same as the hash length. If -2, then the salt
+// length is maximal given the size of |rsa|. If unsure, use -1.
+OPENSSL_EXPORT int RSA_sign_pss_mgf1(RSA *rsa, size_t *out_len, uint8_t *out,
+                                     size_t max_out, const uint8_t *in,
+                                     size_t in_len, const EVP_MD *md,
+                                     const EVP_MD *mgf1_md, int salt_len);
+
+// RSA_sign_raw signs |in_len| bytes from |in| with the public key from |rsa|
+// and writes, at most, |max_out| bytes of signature data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_sign_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                size_t max_out, const uint8_t *in,
+                                size_t in_len, int padding);
+
+// RSA_verify verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PKCS1-v1_5 signature of |msg_len| bytes at |msg| by |rsa|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |msg|
+// and is embedded in the resulting signature in order to prevent hash
+// confusion attacks. For example, it might be |NID_sha256|.
+//
+// It returns one if the signature is valid and zero otherwise.
+//
+// WARNING: this differs from the original, OpenSSL function which additionally
+// returned -1 on error.
+OPENSSL_EXPORT int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len,
+                              const uint8_t *sig, size_t sig_len, RSA *rsa);
+
+// RSA_verify_pss_mgf1 verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PSS signature of |msg_len| bytes at |msg| by |rsa|. It returns one if
+// the signature is valid and zero otherwise. MGF1 is used as the mask
+// generation function.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used. |salt_len| specifies the expected salt length in bytes.
+//
+// If |salt_len| is -1, then the salt length is the same as the hash length. If
+// -2, then the salt length is recovered and all values accepted. If unsure, use
+// -1.
+OPENSSL_EXPORT int RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg,
+                                       size_t msg_len, const EVP_MD *md,
+                                       const EVP_MD *mgf1_md, int salt_len,
+                                       const uint8_t *sig, size_t sig_len);
+
+// RSA_verify_raw verifies |in_len| bytes of signature from |in| using the
+// public key from |rsa| and writes, at most, |max_out| bytes of plaintext to
+// |out|. The |max_out| argument must be, at least, |RSA_size| in order to
+// ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_verify_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                  size_t max_out, const uint8_t *in,
+                                  size_t in_len, int padding);
+
+// RSA_private_encrypt encrypts |flen| bytes from |from| with the private key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, |RSA_PKCS1_PADDING| is the most common but
+// |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for new
+// protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_sign_raw| instead.
+OPENSSL_EXPORT int RSA_private_encrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+// RSA_public_decrypt verifies |flen| bytes of signature from |from| using the
+// public key in |rsa| and writes the plaintext to |to|. The |to| buffer must
+// have at least |RSA_size| bytes of space. It returns the number of bytes
+// written, or -1 on error. The |padding| argument must be one of the
+// |RSA_*_PADDING| values. If in doubt, |RSA_PKCS1_PADDING| is the most common
+// but |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for
+// new protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_verify_raw| instead.
+OPENSSL_EXPORT int RSA_public_decrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+
+// Utility functions.
+
+// RSA_size returns the number of bytes in the modulus, which is also the size
+// of a signature or encrypted value using |rsa|.
+OPENSSL_EXPORT unsigned RSA_size(const RSA *rsa);
+
+// RSA_is_opaque returns one if |rsa| is opaque and doesn't expose its key
+// material. Otherwise it returns zero.
+OPENSSL_EXPORT int RSA_is_opaque(const RSA *rsa);
+
+// RSAPublicKey_dup allocates a fresh |RSA| and copies the public key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPublicKey_dup(const RSA *rsa);
+
+// RSAPrivateKey_dup allocates a fresh |RSA| and copies the private key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPrivateKey_dup(const RSA *rsa);
+
+// RSA_check_key performs basic validity tests on |rsa|. It returns one if
+// they pass and zero otherwise. Opaque keys and public keys always pass. If it
+// returns zero then a more detailed error is available on the error queue.
+OPENSSL_EXPORT int RSA_check_key(const RSA *rsa);
+
+// RSA_check_fips performs public key validity tests on |key|. It returns one if
+// they pass and zero otherwise. Opaque keys always fail. This function does not
+// mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_check_fips(RSA *key);
+
+// RSA_verify_PKCS1_PSS_mgf1 verifies that |EM| is a correct PSS padding of
+// |mHash|, where |mHash| is a digest produced by |Hash|. |EM| must point to
+// exactly |RSA_size(rsa)| bytes of data. The |mgf1Hash| argument specifies the
+// hash function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is recovered and all values accepted.
+//
+// If unsure, use -1.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS_mgf1(const RSA *rsa,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash,
+                                             const EVP_MD *mgf1Hash,
+                                             const uint8_t *EM, int sLen);
+
+// RSA_padding_add_PKCS1_PSS_mgf1 writes a PSS padding of |mHash| to |EM|,
+// where |mHash| is a digest produced by |Hash|. |RSA_size(rsa)| bytes of
+// output will be written to |EM|. The |mgf1Hash| argument specifies the hash
+// function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is maximal given the space in |EM|.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS_mgf1(const RSA *rsa, uint8_t *EM,
+                                                  const uint8_t *mHash,
+                                                  const EVP_MD *Hash,
+                                                  const EVP_MD *mgf1Hash,
+                                                  int sLen);
+
+// RSA_padding_add_PKCS1_OAEP_mgf1 writes an OAEP padding of |from| to |to|
+// with the given parameters and hash functions. If |md| is NULL then SHA-1 is
+// used. If |mgf1md| is NULL then the value of |md| is used (which means SHA-1
+// if that, in turn, is NULL).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP_mgf1(
+    uint8_t *to, size_t to_len, const uint8_t *from, size_t from_len,
+    const uint8_t *param, size_t param_len, const EVP_MD *md,
+    const EVP_MD *mgf1md);
+
+// RSA_add_pkcs1_prefix builds a version of |msg| prefixed with the DigestInfo
+// header for the given hash function and sets |out_msg| to point to it. On
+// successful return, if |*is_alloced| is one, the caller must release
+// |*out_msg| with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_add_pkcs1_prefix(uint8_t **out_msg, size_t *out_msg_len,
+                                        int *is_alloced, int hash_nid,
+                                        const uint8_t *msg, size_t msg_len);
+
+
+// ASN.1 functions.
+
+// RSA_parse_public_key parses a DER-encoded RSAPublicKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_public_key(CBS *cbs);
+
+// RSA_public_key_from_bytes parses |in| as a DER-encoded RSAPublicKey structure
+// (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len);
+
+// RSA_marshal_public_key marshals |rsa| as a DER-encoded RSAPublicKey structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int RSA_marshal_public_key(CBB *cbb, const RSA *rsa);
+
+// RSA_public_key_to_bytes marshals |rsa| as a DER-encoded RSAPublicKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_public_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                           const RSA *rsa);
+
+// RSA_parse_private_key parses a DER-encoded RSAPrivateKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_private_key(CBS *cbs);
+
+// RSA_private_key_from_bytes parses |in| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_private_key_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// RSA_marshal_private_key marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and appends the result to |cbb|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int RSA_marshal_private_key(CBB *cbb, const RSA *rsa);
+
+// RSA_private_key_to_bytes marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_private_key_to_bytes(uint8_t **out_bytes,
+                                            size_t *out_len, const RSA *rsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int RSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int RSA_set_ex_data(RSA *rsa, int idx, void *arg);
+OPENSSL_EXPORT void *RSA_get_ex_data(const RSA *rsa, int idx);
+
+
+// Flags.
+
+// RSA_FLAG_OPAQUE specifies that this RSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define RSA_FLAG_OPAQUE 1
+
+// RSA_FLAG_NO_BLINDING disables blinding of private operations, which is a
+// dangerous thing to do. It is deprecated and should not be used. It will
+// be ignored whenever possible.
+//
+// This flag must be used if a key without the public exponent |e| is used for
+// private key operations; avoid using such keys whenever possible.
+#define RSA_FLAG_NO_BLINDING 8
+
+// RSA_FLAG_EXT_PKEY is deprecated and ignored.
+#define RSA_FLAG_EXT_PKEY 0x20
+
+
+// RSA public exponent values.
+
+#define RSA_3 0x3
+#define RSA_F4 0x10001
+
+
+// Deprecated functions.
+
+#define RSA_METHOD_FLAG_NO_CHECK RSA_FLAG_OPAQUE
+
+// RSA_flags returns the flags for |rsa|. These are a bitwise OR of |RSA_FLAG_*|
+// constants.
+OPENSSL_EXPORT int RSA_flags(const RSA *rsa);
+
+// RSA_blinding_on returns one.
+OPENSSL_EXPORT int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
+
+// RSA_generate_key behaves like |RSA_generate_key_ex|, which is what you
+// should use instead. It returns NULL on error, or a newly-allocated |RSA| on
+// success. This function is provided for compatibility only. The |callback|
+// and |cb_arg| parameters must be NULL.
+OPENSSL_EXPORT RSA *RSA_generate_key(int bits, unsigned long e, void *callback,
+                                     void *cb_arg);
+
+// d2i_RSAPublicKey parses an ASN.1, DER-encoded, RSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPublicKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPublicKey(const RSA *in, uint8_t **outp);
+
+// d2i_RSAPrivateKey parses an ASN.1, DER-encoded, RSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPrivateKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp);
+
+// RSA_padding_add_PKCS1_PSS acts like |RSA_padding_add_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS(const RSA *rsa, uint8_t *EM,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash, int sLen);
+
+// RSA_verify_PKCS1_PSS acts like |RSA_verify_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS(const RSA *rsa, const uint8_t *mHash,
+                                        const EVP_MD *Hash, const uint8_t *EM,
+                                        int sLen);
+
+// RSA_padding_add_PKCS1_OAEP acts like |RSA_padding_add_PKCS1_OAEP_mgf1| but
+// the |md| and |mgf1md| parameters of the latter are implicitly set to NULL,
+// which means SHA-1.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP(uint8_t *to, size_t to_len,
+                                              const uint8_t *from,
+                                              size_t from_len,
+                                              const uint8_t *param,
+                                              size_t param_len);
+
+// RSA_print prints a textual representation of |rsa| to |bio|. It returns one
+// on success or zero otherwise.
+OPENSSL_EXPORT int RSA_print(BIO *bio, const RSA *rsa, int indent);
+
+
+struct rsa_meth_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(RSA *rsa);
+  int (*finish)(RSA *rsa);
+
+  // size returns the size of the RSA modulus in bytes.
+  size_t (*size)(const RSA *rsa);
+
+  int (*sign)(int type, const uint8_t *m, unsigned int m_length,
+              uint8_t *sigret, unsigned int *siglen, const RSA *rsa);
+
+  // These functions mirror the |RSA_*| functions of the same name.
+  int (*sign_raw)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                  const uint8_t *in, size_t in_len, int padding);
+  int (*decrypt)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                 const uint8_t *in, size_t in_len, int padding);
+
+  // private_transform takes a big-endian integer from |in|, calculates the
+  // d'th power of it, modulo the RSA modulus and writes the result as a
+  // big-endian integer to |out|. Both |in| and |out| are |len| bytes long and
+  // |len| is always equal to |RSA_size(rsa)|. If the result of the transform
+  // can be represented in fewer than |len| bytes, then |out| must be zero
+  // padded on the left.
+  //
+  // It returns one on success and zero otherwise.
+  //
+  // RSA decrypt and sign operations will call this, thus an ENGINE might wish
+  // to override it in order to avoid having to implement the padding
+  // functionality demanded by those, higher level, operations.
+  int (*private_transform)(RSA *rsa, uint8_t *out, const uint8_t *in,
+                           size_t len);
+
+  int flags;
+};
+
+
+// Private functions.
+
+typedef struct bn_blinding_st BN_BLINDING;
+
+struct rsa_st {
+  RSA_METHOD *meth;
+
+  // Access to the following fields was historically allowed, but
+  // deprecated. Use |RSA_get0_*| and |RSA_set0_*| instead. Access to all other
+  // fields is forbidden and will cause threading errors.
+  BIGNUM *n;
+  BIGNUM *e;
+  BIGNUM *d;
+  BIGNUM *p;
+  BIGNUM *q;
+  BIGNUM *dmp1;
+  BIGNUM *dmq1;
+  BIGNUM *iqmp;
+
+  // be careful using this if the RSA structure is shared
+  CRYPTO_EX_DATA ex_data;
+  CRYPTO_refcount_t references;
+  int flags;
+
+  CRYPTO_MUTEX lock;
+
+  // Used to cache montgomery values. The creation of these values is protected
+  // by |lock|.
+  BN_MONT_CTX *mont_n;
+  BN_MONT_CTX *mont_p;
+  BN_MONT_CTX *mont_q;
+
+  // The following fields are copies of |d|, |dmp1|, and |dmq1|, respectively,
+  // but with the correct widths to prevent side channels. These must use
+  // separate copies due to threading concerns caused by OpenSSL's API
+  // mistakes. See https://github.com/openssl/openssl/issues/5158 and
+  // the |freeze_private_key| implementation.
+  BIGNUM *d_fixed, *dmp1_fixed, *dmq1_fixed;
+
+  // inv_small_mod_large_mont is q^-1 mod p in Montgomery form, using |mont_p|,
+  // if |p| >= |q|. Otherwise, it is p^-1 mod q in Montgomery form, using
+  // |mont_q|.
+  BIGNUM *inv_small_mod_large_mont;
+
+  // num_blindings contains the size of the |blindings| and |blindings_inuse|
+  // arrays. This member and the |blindings_inuse| array are protected by
+  // |lock|.
+  unsigned num_blindings;
+  // blindings is an array of BN_BLINDING structures that can be reserved by a
+  // thread by locking |lock| and changing the corresponding element in
+  // |blindings_inuse| from 0 to 1.
+  BN_BLINDING **blindings;
+  unsigned char *blindings_inuse;
+
+  // private_key_frozen is one if the key has been used for a private key
+  // operation and may no longer be mutated.
+  unsigned private_key_frozen:1;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(RSA, RSA_free)
+BORINGSSL_MAKE_UP_REF(RSA, RSA_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define RSA_R_BAD_ENCODING 100
+#define RSA_R_BAD_E_VALUE 101
+#define RSA_R_BAD_FIXED_HEADER_DECRYPT 102
+#define RSA_R_BAD_PAD_BYTE_COUNT 103
+#define RSA_R_BAD_RSA_PARAMETERS 104
+#define RSA_R_BAD_SIGNATURE 105
+#define RSA_R_BAD_VERSION 106
+#define RSA_R_BLOCK_TYPE_IS_NOT_01 107
+#define RSA_R_BN_NOT_INITIALIZED 108
+#define RSA_R_CANNOT_RECOVER_MULTI_PRIME_KEY 109
+#define RSA_R_CRT_PARAMS_ALREADY_GIVEN 110
+#define RSA_R_CRT_VALUES_INCORRECT 111
+#define RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN 112
+#define RSA_R_DATA_TOO_LARGE 113
+#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 114
+#define RSA_R_DATA_TOO_LARGE_FOR_MODULUS 115
+#define RSA_R_DATA_TOO_SMALL 116
+#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 117
+#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 118
+#define RSA_R_D_E_NOT_CONGRUENT_TO_1 119
+#define RSA_R_EMPTY_PUBLIC_KEY 120
+#define RSA_R_ENCODE_ERROR 121
+#define RSA_R_FIRST_OCTET_INVALID 122
+#define RSA_R_INCONSISTENT_SET_OF_CRT_VALUES 123
+#define RSA_R_INTERNAL_ERROR 124
+#define RSA_R_INVALID_MESSAGE_LENGTH 125
+#define RSA_R_KEY_SIZE_TOO_SMALL 126
+#define RSA_R_LAST_OCTET_INVALID 127
+#define RSA_R_MODULUS_TOO_LARGE 128
+#define RSA_R_MUST_HAVE_AT_LEAST_TWO_PRIMES 129
+#define RSA_R_NO_PUBLIC_EXPONENT 130
+#define RSA_R_NULL_BEFORE_BLOCK_MISSING 131
+#define RSA_R_N_NOT_EQUAL_P_Q 132
+#define RSA_R_OAEP_DECODING_ERROR 133
+#define RSA_R_ONLY_ONE_OF_P_Q_GIVEN 134
+#define RSA_R_OUTPUT_BUFFER_TOO_SMALL 135
+#define RSA_R_PADDING_CHECK_FAILED 136
+#define RSA_R_PKCS_DECODING_ERROR 137
+#define RSA_R_SLEN_CHECK_FAILED 138
+#define RSA_R_SLEN_RECOVERY_FAILED 139
+#define RSA_R_TOO_LONG 140
+#define RSA_R_TOO_MANY_ITERATIONS 141
+#define RSA_R_UNKNOWN_ALGORITHM_TYPE 142
+#define RSA_R_UNKNOWN_PADDING_TYPE 143
+#define RSA_R_VALUE_MISSING 144
+#define RSA_R_WRONG_SIGNATURE_LENGTH 145
+#define RSA_R_PUBLIC_KEY_VALIDATION_FAILED 146
+#define RSA_R_D_OUT_OF_RANGE 147
+#define RSA_R_BLOCK_TYPE_IS_NOT_02 148
+
+#endif  // OPENSSL_HEADER_RSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.back
new file mode 100644
index 0000000..2e5cc89
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.back	
@@ -0,0 +1,787 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RSA_H
+#define OPENSSL_HEADER_RSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// rsa.h contains functions for handling encryption and signature using RSA.
+
+
+// Allocation and destruction.
+//
+// An |RSA| object represents a public or private RSA key. A given object may be
+// used concurrently on multiple threads by non-mutating functions, provided no
+// other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// RSA_new returns a new, empty |RSA| object or NULL on error.
+OPENSSL_EXPORT RSA *RSA_new(void);
+
+// RSA_new_method acts the same as |RSA_new| but takes an explicit |ENGINE|.
+OPENSSL_EXPORT RSA *RSA_new_method(const ENGINE *engine);
+
+// RSA_free decrements the reference count of |rsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void RSA_free(RSA *rsa);
+
+// RSA_up_ref increments the reference count of |rsa| and returns one. It does
+// not mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_up_ref(RSA *rsa);
+
+
+// Properties.
+
+// RSA_bits returns the size of |rsa|, in bits.
+OPENSSL_EXPORT unsigned RSA_bits(const RSA *rsa);
+
+// RSA_get0_key sets |*out_n|, |*out_e|, and |*out_d|, if non-NULL, to |rsa|'s
+// modulus, public exponent, and private exponent, respectively. If |rsa| is a
+// public key, the private exponent will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_key(const RSA *rsa, const BIGNUM **out_n,
+                                 const BIGNUM **out_e, const BIGNUM **out_d);
+
+// RSA_get0_factors sets |*out_p| and |*out_q|, if non-NULL, to |rsa|'s prime
+// factors. If |rsa| is a public key, they will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_factors(const RSA *rsa, const BIGNUM **out_p,
+                                     const BIGNUM **out_q);
+
+// RSA_get0_crt_params sets |*out_dmp1|, |*out_dmq1|, and |*out_iqmp|, if
+// non-NULL, to |rsa|'s CRT parameters. These are d (mod p-1), d (mod q-1) and
+// q^-1 (mod p), respectively. If |rsa| is a public key, each parameter will be
+// set to NULL.
+OPENSSL_EXPORT void RSA_get0_crt_params(const RSA *rsa, const BIGNUM **out_dmp1,
+                                        const BIGNUM **out_dmq1,
+                                        const BIGNUM **out_iqmp);
+
+// RSA_set0_key sets |rsa|'s modulus, public exponent, and private exponent to
+// |n|, |e|, and |d| respectively, if non-NULL. On success, it takes ownership
+// of each argument and returns one. Otherwise, it returns zero.
+//
+// |d| may be NULL, but |n| and |e| must either be non-NULL or already
+// configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d);
+
+// RSA_set0_factors sets |rsa|'s prime factors to |p| and |q|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_factors(RSA *rsa, BIGNUM *p, BIGNUM *q);
+
+// RSA_set0_crt_params sets |rsa|'s CRT parameters to |dmp1|, |dmq1|, and
+// |iqmp|, if non-NULL, and takes ownership of them. On success, it takes
+// ownership of its parameters and returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_crt_params(RSA *rsa, BIGNUM *dmp1, BIGNUM *dmq1,
+                                       BIGNUM *iqmp);
+
+
+// Key generation.
+
+// RSA_generate_key_ex generates a new RSA key where the modulus has size
+// |bits| and the public exponent is |e|. If unsure, |RSA_F4| is a good value
+// for |e|. If |cb| is not NULL then it is called during the key generation
+// process. In addition to the calls documented for |BN_generate_prime_ex|, it
+// is called with event=2 when the n'th prime is rejected as unsuitable and
+// with event=3 when a suitable value for |p| is found.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
+                                       BN_GENCB *cb);
+
+// RSA_generate_key_fips behaves like |RSA_generate_key_ex| but performs
+// additional checks for FIPS compliance. The public exponent is always 65537
+// and |bits| must be either 2048 or 3072.
+OPENSSL_EXPORT int RSA_generate_key_fips(RSA *rsa, int bits, BN_GENCB *cb);
+
+
+// Encryption / Decryption
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_PKCS1_PADDING denotes PKCS#1 v1.5 padding. When used with encryption,
+// this is RSAES-PKCS1-v1_5. When used with signing, this is RSASSA-PKCS1-v1_5.
+#define RSA_PKCS1_PADDING 1
+
+// RSA_NO_PADDING denotes a raw RSA operation.
+#define RSA_NO_PADDING 3
+
+// RSA_PKCS1_OAEP_PADDING denotes the RSAES-OAEP encryption scheme.
+#define RSA_PKCS1_OAEP_PADDING 4
+
+// RSA_PKCS1_PSS_PADDING denotes the RSASSA-PSS signature scheme. This value may
+// not be passed into |RSA_sign_raw|, only |EVP_PKEY_CTX_set_rsa_padding|. See
+// also |RSA_sign_pss_mgf1| and |RSA_verify_pss_mgf1|.
+#define RSA_PKCS1_PSS_PADDING 6
+
+// RSA_encrypt encrypts |in_len| bytes from |in| to the public key from |rsa|
+// and writes, at most, |max_out| bytes of encrypted data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+OPENSSL_EXPORT int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_decrypt decrypts |in_len| bytes from |in| with the private key from
+// |rsa| and writes, at most, |max_out| bytes of plaintext to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols.
+//
+// Passing |RSA_PKCS1_PADDING| into this function is deprecated and insecure. If
+// implementing a protocol using RSAES-PKCS1-V1_5, use |RSA_NO_PADDING| and then
+// check padding in constant-time combined with a swap to a random session key
+// or other mitigation. See "Chosen Ciphertext Attacks Against Protocols Based
+// on the RSA Encryption Standard PKCS #1", Daniel Bleichenbacher, Advances in
+// Cryptology (Crypto '98).
+OPENSSL_EXPORT int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_public_encrypt encrypts |flen| bytes from |from| to the public key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_encrypt| instead.
+OPENSSL_EXPORT int RSA_public_encrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+// RSA_private_decrypt decrypts |flen| bytes from |from| with the public key in
+// |rsa| and writes the plaintext to |to|. The |to| buffer must have at least
+// |RSA_size| bytes of space. It returns the number of bytes written, or -1 on
+// error. The |padding| argument must be one of the |RSA_*_PADDING| values. If
+// in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols. Passing
+// |RSA_PKCS1_PADDING| into this function is deprecated and insecure. See
+// |RSA_decrypt|.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_decrypt| instead.
+OPENSSL_EXPORT int RSA_private_decrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+
+// Signing / Verification
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_sign signs |in_len| bytes of digest from |in| with |rsa| using
+// RSASSA-PKCS1-v1_5. It writes, at most, |RSA_size(rsa)| bytes to |out|. On
+// successful return, the actual number of bytes written is written to
+// |*out_len|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |in|
+// and is embedded in the resulting signature. For example, it might be
+// |NID_sha256|.
+//
+// It returns 1 on success and zero on error.
+OPENSSL_EXPORT int RSA_sign(int hash_nid, const uint8_t *in,
+                            unsigned int in_len, uint8_t *out,
+                            unsigned int *out_len, RSA *rsa);
+
+// RSA_sign_pss_mgf1 signs |in_len| bytes from |in| with the public key from
+// |rsa| using RSASSA-PSS with MGF1 as the mask generation function. It writes,
+// at most, |max_out| bytes of signature data to |out|. The |max_out| argument
+// must be, at least, |RSA_size| in order to ensure success. It returns 1 on
+// success or zero on error.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used.
+//
+// |salt_len| specifies the expected salt length in bytes. If |salt_len| is -1,
+// then the salt length is the same as the hash length. If -2, then the salt
+// length is maximal given the size of |rsa|. If unsure, use -1.
+OPENSSL_EXPORT int RSA_sign_pss_mgf1(RSA *rsa, size_t *out_len, uint8_t *out,
+                                     size_t max_out, const uint8_t *in,
+                                     size_t in_len, const EVP_MD *md,
+                                     const EVP_MD *mgf1_md, int salt_len);
+
+// RSA_sign_raw signs |in_len| bytes from |in| with the public key from |rsa|
+// and writes, at most, |max_out| bytes of signature data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_sign_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                size_t max_out, const uint8_t *in,
+                                size_t in_len, int padding);
+
+// RSA_verify verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PKCS1-v1_5 signature of |msg_len| bytes at |msg| by |rsa|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |msg|
+// and is embedded in the resulting signature in order to prevent hash
+// confusion attacks. For example, it might be |NID_sha256|.
+//
+// It returns one if the signature is valid and zero otherwise.
+//
+// WARNING: this differs from the original, OpenSSL function which additionally
+// returned -1 on error.
+OPENSSL_EXPORT int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len,
+                              const uint8_t *sig, size_t sig_len, RSA *rsa);
+
+// RSA_verify_pss_mgf1 verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PSS signature of |msg_len| bytes at |msg| by |rsa|. It returns one if
+// the signature is valid and zero otherwise. MGF1 is used as the mask
+// generation function.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used. |salt_len| specifies the expected salt length in bytes.
+//
+// If |salt_len| is -1, then the salt length is the same as the hash length. If
+// -2, then the salt length is recovered and all values accepted. If unsure, use
+// -1.
+OPENSSL_EXPORT int RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg,
+                                       size_t msg_len, const EVP_MD *md,
+                                       const EVP_MD *mgf1_md, int salt_len,
+                                       const uint8_t *sig, size_t sig_len);
+
+// RSA_verify_raw verifies |in_len| bytes of signature from |in| using the
+// public key from |rsa| and writes, at most, |max_out| bytes of plaintext to
+// |out|. The |max_out| argument must be, at least, |RSA_size| in order to
+// ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_verify_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                  size_t max_out, const uint8_t *in,
+                                  size_t in_len, int padding);
+
+// RSA_private_encrypt encrypts |flen| bytes from |from| with the private key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, |RSA_PKCS1_PADDING| is the most common but
+// |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for new
+// protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_sign_raw| instead.
+OPENSSL_EXPORT int RSA_private_encrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+// RSA_public_decrypt verifies |flen| bytes of signature from |from| using the
+// public key in |rsa| and writes the plaintext to |to|. The |to| buffer must
+// have at least |RSA_size| bytes of space. It returns the number of bytes
+// written, or -1 on error. The |padding| argument must be one of the
+// |RSA_*_PADDING| values. If in doubt, |RSA_PKCS1_PADDING| is the most common
+// but |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for
+// new protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_verify_raw| instead.
+OPENSSL_EXPORT int RSA_public_decrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+
+// Utility functions.
+
+// RSA_size returns the number of bytes in the modulus, which is also the size
+// of a signature or encrypted value using |rsa|.
+OPENSSL_EXPORT unsigned RSA_size(const RSA *rsa);
+
+// RSA_is_opaque returns one if |rsa| is opaque and doesn't expose its key
+// material. Otherwise it returns zero.
+OPENSSL_EXPORT int RSA_is_opaque(const RSA *rsa);
+
+// RSAPublicKey_dup allocates a fresh |RSA| and copies the public key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPublicKey_dup(const RSA *rsa);
+
+// RSAPrivateKey_dup allocates a fresh |RSA| and copies the private key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPrivateKey_dup(const RSA *rsa);
+
+// RSA_check_key performs basic validity tests on |rsa|. It returns one if
+// they pass and zero otherwise. Opaque keys and public keys always pass. If it
+// returns zero then a more detailed error is available on the error queue.
+OPENSSL_EXPORT int RSA_check_key(const RSA *rsa);
+
+// RSA_check_fips performs public key validity tests on |key|. It returns one if
+// they pass and zero otherwise. Opaque keys always fail. This function does not
+// mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_check_fips(RSA *key);
+
+// RSA_verify_PKCS1_PSS_mgf1 verifies that |EM| is a correct PSS padding of
+// |mHash|, where |mHash| is a digest produced by |Hash|. |EM| must point to
+// exactly |RSA_size(rsa)| bytes of data. The |mgf1Hash| argument specifies the
+// hash function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is recovered and all values accepted.
+//
+// If unsure, use -1.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS_mgf1(const RSA *rsa,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash,
+                                             const EVP_MD *mgf1Hash,
+                                             const uint8_t *EM, int sLen);
+
+// RSA_padding_add_PKCS1_PSS_mgf1 writes a PSS padding of |mHash| to |EM|,
+// where |mHash| is a digest produced by |Hash|. |RSA_size(rsa)| bytes of
+// output will be written to |EM|. The |mgf1Hash| argument specifies the hash
+// function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is maximal given the space in |EM|.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS_mgf1(const RSA *rsa, uint8_t *EM,
+                                                  const uint8_t *mHash,
+                                                  const EVP_MD *Hash,
+                                                  const EVP_MD *mgf1Hash,
+                                                  int sLen);
+
+// RSA_padding_add_PKCS1_OAEP_mgf1 writes an OAEP padding of |from| to |to|
+// with the given parameters and hash functions. If |md| is NULL then SHA-1 is
+// used. If |mgf1md| is NULL then the value of |md| is used (which means SHA-1
+// if that, in turn, is NULL).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP_mgf1(
+    uint8_t *to, size_t to_len, const uint8_t *from, size_t from_len,
+    const uint8_t *param, size_t param_len, const EVP_MD *md,
+    const EVP_MD *mgf1md);
+
+// RSA_add_pkcs1_prefix builds a version of |msg| prefixed with the DigestInfo
+// header for the given hash function and sets |out_msg| to point to it. On
+// successful return, if |*is_alloced| is one, the caller must release
+// |*out_msg| with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_add_pkcs1_prefix(uint8_t **out_msg, size_t *out_msg_len,
+                                        int *is_alloced, int hash_nid,
+                                        const uint8_t *msg, size_t msg_len);
+
+
+// ASN.1 functions.
+
+// RSA_parse_public_key parses a DER-encoded RSAPublicKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_public_key(CBS *cbs);
+
+// RSA_public_key_from_bytes parses |in| as a DER-encoded RSAPublicKey structure
+// (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len);
+
+// RSA_marshal_public_key marshals |rsa| as a DER-encoded RSAPublicKey structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int RSA_marshal_public_key(CBB *cbb, const RSA *rsa);
+
+// RSA_public_key_to_bytes marshals |rsa| as a DER-encoded RSAPublicKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_public_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                           const RSA *rsa);
+
+// RSA_parse_private_key parses a DER-encoded RSAPrivateKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_private_key(CBS *cbs);
+
+// RSA_private_key_from_bytes parses |in| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_private_key_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// RSA_marshal_private_key marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and appends the result to |cbb|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int RSA_marshal_private_key(CBB *cbb, const RSA *rsa);
+
+// RSA_private_key_to_bytes marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_private_key_to_bytes(uint8_t **out_bytes,
+                                            size_t *out_len, const RSA *rsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int RSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int RSA_set_ex_data(RSA *rsa, int idx, void *arg);
+OPENSSL_EXPORT void *RSA_get_ex_data(const RSA *rsa, int idx);
+
+
+// Flags.
+
+// RSA_FLAG_OPAQUE specifies that this RSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define RSA_FLAG_OPAQUE 1
+
+// RSA_FLAG_NO_BLINDING disables blinding of private operations, which is a
+// dangerous thing to do. It is deprecated and should not be used. It will
+// be ignored whenever possible.
+//
+// This flag must be used if a key without the public exponent |e| is used for
+// private key operations; avoid using such keys whenever possible.
+#define RSA_FLAG_NO_BLINDING 8
+
+// RSA_FLAG_EXT_PKEY is deprecated and ignored.
+#define RSA_FLAG_EXT_PKEY 0x20
+
+
+// RSA public exponent values.
+
+#define RSA_3 0x3
+#define RSA_F4 0x10001
+
+
+// Deprecated functions.
+
+#define RSA_METHOD_FLAG_NO_CHECK RSA_FLAG_OPAQUE
+
+// RSA_flags returns the flags for |rsa|. These are a bitwise OR of |RSA_FLAG_*|
+// constants.
+OPENSSL_EXPORT int RSA_flags(const RSA *rsa);
+
+// RSA_blinding_on returns one.
+OPENSSL_EXPORT int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
+
+// RSA_generate_key behaves like |RSA_generate_key_ex|, which is what you
+// should use instead. It returns NULL on error, or a newly-allocated |RSA| on
+// success. This function is provided for compatibility only. The |callback|
+// and |cb_arg| parameters must be NULL.
+OPENSSL_EXPORT RSA *RSA_generate_key(int bits, unsigned long e, void *callback,
+                                     void *cb_arg);
+
+// d2i_RSAPublicKey parses an ASN.1, DER-encoded, RSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPublicKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPublicKey(const RSA *in, uint8_t **outp);
+
+// d2i_RSAPrivateKey parses an ASN.1, DER-encoded, RSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPrivateKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp);
+
+// RSA_padding_add_PKCS1_PSS acts like |RSA_padding_add_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS(const RSA *rsa, uint8_t *EM,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash, int sLen);
+
+// RSA_verify_PKCS1_PSS acts like |RSA_verify_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS(const RSA *rsa, const uint8_t *mHash,
+                                        const EVP_MD *Hash, const uint8_t *EM,
+                                        int sLen);
+
+// RSA_padding_add_PKCS1_OAEP acts like |RSA_padding_add_PKCS1_OAEP_mgf1| but
+// the |md| and |mgf1md| parameters of the latter are implicitly set to NULL,
+// which means SHA-1.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP(uint8_t *to, size_t to_len,
+                                              const uint8_t *from,
+                                              size_t from_len,
+                                              const uint8_t *param,
+                                              size_t param_len);
+
+// RSA_print prints a textual representation of |rsa| to |bio|. It returns one
+// on success or zero otherwise.
+OPENSSL_EXPORT int RSA_print(BIO *bio, const RSA *rsa, int indent);
+
+
+struct rsa_meth_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(RSA *rsa);
+  int (*finish)(RSA *rsa);
+
+  // size returns the size of the RSA modulus in bytes.
+  size_t (*size)(const RSA *rsa);
+
+  int (*sign)(int type, const uint8_t *m, unsigned int m_length,
+              uint8_t *sigret, unsigned int *siglen, const RSA *rsa);
+
+  // These functions mirror the |RSA_*| functions of the same name.
+  int (*sign_raw)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                  const uint8_t *in, size_t in_len, int padding);
+  int (*decrypt)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                 const uint8_t *in, size_t in_len, int padding);
+
+  // private_transform takes a big-endian integer from |in|, calculates the
+  // d'th power of it, modulo the RSA modulus and writes the result as a
+  // big-endian integer to |out|. Both |in| and |out| are |len| bytes long and
+  // |len| is always equal to |RSA_size(rsa)|. If the result of the transform
+  // can be represented in fewer than |len| bytes, then |out| must be zero
+  // padded on the left.
+  //
+  // It returns one on success and zero otherwise.
+  //
+  // RSA decrypt and sign operations will call this, thus an ENGINE might wish
+  // to override it in order to avoid having to implement the padding
+  // functionality demanded by those, higher level, operations.
+  int (*private_transform)(RSA *rsa, uint8_t *out, const uint8_t *in,
+                           size_t len);
+
+  int flags;
+};
+
+
+// Private functions.
+
+typedef struct bn_blinding_st BN_BLINDING;
+
+struct rsa_st {
+  RSA_METHOD *meth;
+
+  // Access to the following fields was historically allowed, but
+  // deprecated. Use |RSA_get0_*| and |RSA_set0_*| instead. Access to all other
+  // fields is forbidden and will cause threading errors.
+  BIGNUM *n;
+  BIGNUM *e;
+  BIGNUM *d;
+  BIGNUM *p;
+  BIGNUM *q;
+  BIGNUM *dmp1;
+  BIGNUM *dmq1;
+  BIGNUM *iqmp;
+
+  // be careful using this if the RSA structure is shared
+  CRYPTO_EX_DATA ex_data;
+  CRYPTO_refcount_t references;
+  int flags;
+
+  CRYPTO_MUTEX lock;
+
+  // Used to cache montgomery values. The creation of these values is protected
+  // by |lock|.
+  BN_MONT_CTX *mont_n;
+  BN_MONT_CTX *mont_p;
+  BN_MONT_CTX *mont_q;
+
+  // The following fields are copies of |d|, |dmp1|, and |dmq1|, respectively,
+  // but with the correct widths to prevent side channels. These must use
+  // separate copies due to threading concerns caused by OpenSSL's API
+  // mistakes. See https://github.com/openssl/openssl/issues/5158 and
+  // the |freeze_private_key| implementation.
+  BIGNUM *d_fixed, *dmp1_fixed, *dmq1_fixed;
+
+  // inv_small_mod_large_mont is q^-1 mod p in Montgomery form, using |mont_p|,
+  // if |p| >= |q|. Otherwise, it is p^-1 mod q in Montgomery form, using
+  // |mont_q|.
+  BIGNUM *inv_small_mod_large_mont;
+
+  // num_blindings contains the size of the |blindings| and |blindings_inuse|
+  // arrays. This member and the |blindings_inuse| array are protected by
+  // |lock|.
+  unsigned num_blindings;
+  // blindings is an array of BN_BLINDING structures that can be reserved by a
+  // thread by locking |lock| and changing the corresponding element in
+  // |blindings_inuse| from 0 to 1.
+  BN_BLINDING **blindings;
+  unsigned char *blindings_inuse;
+
+  // private_key_frozen is one if the key has been used for a private key
+  // operation and may no longer be mutated.
+  unsigned private_key_frozen:1;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(RSA, RSA_free)
+BORINGSSL_MAKE_UP_REF(RSA, RSA_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define RSA_R_BAD_ENCODING 100
+#define RSA_R_BAD_E_VALUE 101
+#define RSA_R_BAD_FIXED_HEADER_DECRYPT 102
+#define RSA_R_BAD_PAD_BYTE_COUNT 103
+#define RSA_R_BAD_RSA_PARAMETERS 104
+#define RSA_R_BAD_SIGNATURE 105
+#define RSA_R_BAD_VERSION 106
+#define RSA_R_BLOCK_TYPE_IS_NOT_01 107
+#define RSA_R_BN_NOT_INITIALIZED 108
+#define RSA_R_CANNOT_RECOVER_MULTI_PRIME_KEY 109
+#define RSA_R_CRT_PARAMS_ALREADY_GIVEN 110
+#define RSA_R_CRT_VALUES_INCORRECT 111
+#define RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN 112
+#define RSA_R_DATA_TOO_LARGE 113
+#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 114
+#define RSA_R_DATA_TOO_LARGE_FOR_MODULUS 115
+#define RSA_R_DATA_TOO_SMALL 116
+#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 117
+#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 118
+#define RSA_R_D_E_NOT_CONGRUENT_TO_1 119
+#define RSA_R_EMPTY_PUBLIC_KEY 120
+#define RSA_R_ENCODE_ERROR 121
+#define RSA_R_FIRST_OCTET_INVALID 122
+#define RSA_R_INCONSISTENT_SET_OF_CRT_VALUES 123
+#define RSA_R_INTERNAL_ERROR 124
+#define RSA_R_INVALID_MESSAGE_LENGTH 125
+#define RSA_R_KEY_SIZE_TOO_SMALL 126
+#define RSA_R_LAST_OCTET_INVALID 127
+#define RSA_R_MODULUS_TOO_LARGE 128
+#define RSA_R_MUST_HAVE_AT_LEAST_TWO_PRIMES 129
+#define RSA_R_NO_PUBLIC_EXPONENT 130
+#define RSA_R_NULL_BEFORE_BLOCK_MISSING 131
+#define RSA_R_N_NOT_EQUAL_P_Q 132
+#define RSA_R_OAEP_DECODING_ERROR 133
+#define RSA_R_ONLY_ONE_OF_P_Q_GIVEN 134
+#define RSA_R_OUTPUT_BUFFER_TOO_SMALL 135
+#define RSA_R_PADDING_CHECK_FAILED 136
+#define RSA_R_PKCS_DECODING_ERROR 137
+#define RSA_R_SLEN_CHECK_FAILED 138
+#define RSA_R_SLEN_RECOVERY_FAILED 139
+#define RSA_R_TOO_LONG 140
+#define RSA_R_TOO_MANY_ITERATIONS 141
+#define RSA_R_UNKNOWN_ALGORITHM_TYPE 142
+#define RSA_R_UNKNOWN_PADDING_TYPE 143
+#define RSA_R_VALUE_MISSING 144
+#define RSA_R_WRONG_SIGNATURE_LENGTH 145
+#define RSA_R_PUBLIC_KEY_VALIDATION_FAILED 146
+#define RSA_R_D_OUT_OF_RANGE 147
+#define RSA_R_BLOCK_TYPE_IS_NOT_02 148
+
+#endif  // OPENSSL_HEADER_RSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.grpc_back
new file mode 100644
index 0000000..2e5cc89
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/rsa.h.grpc_back	
@@ -0,0 +1,787 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_RSA_H
+#define OPENSSL_HEADER_RSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+#include <openssl/thread.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// rsa.h contains functions for handling encryption and signature using RSA.
+
+
+// Allocation and destruction.
+//
+// An |RSA| object represents a public or private RSA key. A given object may be
+// used concurrently on multiple threads by non-mutating functions, provided no
+// other thread is concurrently calling a mutating function. Unless otherwise
+// documented, functions which take a |const| pointer are non-mutating and
+// functions which take a non-|const| pointer are mutating.
+
+// RSA_new returns a new, empty |RSA| object or NULL on error.
+OPENSSL_EXPORT RSA *RSA_new(void);
+
+// RSA_new_method acts the same as |RSA_new| but takes an explicit |ENGINE|.
+OPENSSL_EXPORT RSA *RSA_new_method(const ENGINE *engine);
+
+// RSA_free decrements the reference count of |rsa| and frees it if the
+// reference count drops to zero.
+OPENSSL_EXPORT void RSA_free(RSA *rsa);
+
+// RSA_up_ref increments the reference count of |rsa| and returns one. It does
+// not mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_up_ref(RSA *rsa);
+
+
+// Properties.
+
+// RSA_bits returns the size of |rsa|, in bits.
+OPENSSL_EXPORT unsigned RSA_bits(const RSA *rsa);
+
+// RSA_get0_key sets |*out_n|, |*out_e|, and |*out_d|, if non-NULL, to |rsa|'s
+// modulus, public exponent, and private exponent, respectively. If |rsa| is a
+// public key, the private exponent will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_key(const RSA *rsa, const BIGNUM **out_n,
+                                 const BIGNUM **out_e, const BIGNUM **out_d);
+
+// RSA_get0_factors sets |*out_p| and |*out_q|, if non-NULL, to |rsa|'s prime
+// factors. If |rsa| is a public key, they will be set to NULL.
+OPENSSL_EXPORT void RSA_get0_factors(const RSA *rsa, const BIGNUM **out_p,
+                                     const BIGNUM **out_q);
+
+// RSA_get0_crt_params sets |*out_dmp1|, |*out_dmq1|, and |*out_iqmp|, if
+// non-NULL, to |rsa|'s CRT parameters. These are d (mod p-1), d (mod q-1) and
+// q^-1 (mod p), respectively. If |rsa| is a public key, each parameter will be
+// set to NULL.
+OPENSSL_EXPORT void RSA_get0_crt_params(const RSA *rsa, const BIGNUM **out_dmp1,
+                                        const BIGNUM **out_dmq1,
+                                        const BIGNUM **out_iqmp);
+
+// RSA_set0_key sets |rsa|'s modulus, public exponent, and private exponent to
+// |n|, |e|, and |d| respectively, if non-NULL. On success, it takes ownership
+// of each argument and returns one. Otherwise, it returns zero.
+//
+// |d| may be NULL, but |n| and |e| must either be non-NULL or already
+// configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d);
+
+// RSA_set0_factors sets |rsa|'s prime factors to |p| and |q|, if non-NULL, and
+// takes ownership of them. On success, it takes ownership of each argument and
+// returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_factors(RSA *rsa, BIGNUM *p, BIGNUM *q);
+
+// RSA_set0_crt_params sets |rsa|'s CRT parameters to |dmp1|, |dmq1|, and
+// |iqmp|, if non-NULL, and takes ownership of them. On success, it takes
+// ownership of its parameters and returns one. Otherwise, it returns zero.
+//
+// Each argument must either be non-NULL or already configured on |rsa|.
+//
+// It is an error to call this function after |rsa| has been used for a
+// cryptographic operation. Construct a new |RSA| object instead.
+OPENSSL_EXPORT int RSA_set0_crt_params(RSA *rsa, BIGNUM *dmp1, BIGNUM *dmq1,
+                                       BIGNUM *iqmp);
+
+
+// Key generation.
+
+// RSA_generate_key_ex generates a new RSA key where the modulus has size
+// |bits| and the public exponent is |e|. If unsure, |RSA_F4| is a good value
+// for |e|. If |cb| is not NULL then it is called during the key generation
+// process. In addition to the calls documented for |BN_generate_prime_ex|, it
+// is called with event=2 when the n'th prime is rejected as unsuitable and
+// with event=3 when a suitable value for |p| is found.
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
+                                       BN_GENCB *cb);
+
+// RSA_generate_key_fips behaves like |RSA_generate_key_ex| but performs
+// additional checks for FIPS compliance. The public exponent is always 65537
+// and |bits| must be either 2048 or 3072.
+OPENSSL_EXPORT int RSA_generate_key_fips(RSA *rsa, int bits, BN_GENCB *cb);
+
+
+// Encryption / Decryption
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_PKCS1_PADDING denotes PKCS#1 v1.5 padding. When used with encryption,
+// this is RSAES-PKCS1-v1_5. When used with signing, this is RSASSA-PKCS1-v1_5.
+#define RSA_PKCS1_PADDING 1
+
+// RSA_NO_PADDING denotes a raw RSA operation.
+#define RSA_NO_PADDING 3
+
+// RSA_PKCS1_OAEP_PADDING denotes the RSAES-OAEP encryption scheme.
+#define RSA_PKCS1_OAEP_PADDING 4
+
+// RSA_PKCS1_PSS_PADDING denotes the RSASSA-PSS signature scheme. This value may
+// not be passed into |RSA_sign_raw|, only |EVP_PKEY_CTX_set_rsa_padding|. See
+// also |RSA_sign_pss_mgf1| and |RSA_verify_pss_mgf1|.
+#define RSA_PKCS1_PSS_PADDING 6
+
+// RSA_encrypt encrypts |in_len| bytes from |in| to the public key from |rsa|
+// and writes, at most, |max_out| bytes of encrypted data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+OPENSSL_EXPORT int RSA_encrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_decrypt decrypts |in_len| bytes from |in| with the private key from
+// |rsa| and writes, at most, |max_out| bytes of plaintext to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols.
+//
+// Passing |RSA_PKCS1_PADDING| into this function is deprecated and insecure. If
+// implementing a protocol using RSAES-PKCS1-V1_5, use |RSA_NO_PADDING| and then
+// check padding in constant-time combined with a swap to a random session key
+// or other mitigation. See "Chosen Ciphertext Attacks Against Protocols Based
+// on the RSA Encryption Standard PKCS #1", Daniel Bleichenbacher, Advances in
+// Cryptology (Crypto '98).
+OPENSSL_EXPORT int RSA_decrypt(RSA *rsa, size_t *out_len, uint8_t *out,
+                               size_t max_out, const uint8_t *in, size_t in_len,
+                               int padding);
+
+// RSA_public_encrypt encrypts |flen| bytes from |from| to the public key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols but
+// |RSA_PKCS1_PADDING| is most common.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_encrypt| instead.
+OPENSSL_EXPORT int RSA_public_encrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+// RSA_private_decrypt decrypts |flen| bytes from |from| with the public key in
+// |rsa| and writes the plaintext to |to|. The |to| buffer must have at least
+// |RSA_size| bytes of space. It returns the number of bytes written, or -1 on
+// error. The |padding| argument must be one of the |RSA_*_PADDING| values. If
+// in doubt, use |RSA_PKCS1_OAEP_PADDING| for new protocols. Passing
+// |RSA_PKCS1_PADDING| into this function is deprecated and insecure. See
+// |RSA_decrypt|.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_decrypt| instead.
+OPENSSL_EXPORT int RSA_private_decrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+
+// Signing / Verification
+//
+// These functions are considered non-mutating for thread-safety purposes and
+// may be used concurrently.
+
+// RSA_sign signs |in_len| bytes of digest from |in| with |rsa| using
+// RSASSA-PKCS1-v1_5. It writes, at most, |RSA_size(rsa)| bytes to |out|. On
+// successful return, the actual number of bytes written is written to
+// |*out_len|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |in|
+// and is embedded in the resulting signature. For example, it might be
+// |NID_sha256|.
+//
+// It returns 1 on success and zero on error.
+OPENSSL_EXPORT int RSA_sign(int hash_nid, const uint8_t *in,
+                            unsigned int in_len, uint8_t *out,
+                            unsigned int *out_len, RSA *rsa);
+
+// RSA_sign_pss_mgf1 signs |in_len| bytes from |in| with the public key from
+// |rsa| using RSASSA-PSS with MGF1 as the mask generation function. It writes,
+// at most, |max_out| bytes of signature data to |out|. The |max_out| argument
+// must be, at least, |RSA_size| in order to ensure success. It returns 1 on
+// success or zero on error.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used.
+//
+// |salt_len| specifies the expected salt length in bytes. If |salt_len| is -1,
+// then the salt length is the same as the hash length. If -2, then the salt
+// length is maximal given the size of |rsa|. If unsure, use -1.
+OPENSSL_EXPORT int RSA_sign_pss_mgf1(RSA *rsa, size_t *out_len, uint8_t *out,
+                                     size_t max_out, const uint8_t *in,
+                                     size_t in_len, const EVP_MD *md,
+                                     const EVP_MD *mgf1_md, int salt_len);
+
+// RSA_sign_raw signs |in_len| bytes from |in| with the public key from |rsa|
+// and writes, at most, |max_out| bytes of signature data to |out|. The
+// |max_out| argument must be, at least, |RSA_size| in order to ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_sign_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                size_t max_out, const uint8_t *in,
+                                size_t in_len, int padding);
+
+// RSA_verify verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PKCS1-v1_5 signature of |msg_len| bytes at |msg| by |rsa|.
+//
+// The |hash_nid| argument identifies the hash function used to calculate |msg|
+// and is embedded in the resulting signature in order to prevent hash
+// confusion attacks. For example, it might be |NID_sha256|.
+//
+// It returns one if the signature is valid and zero otherwise.
+//
+// WARNING: this differs from the original, OpenSSL function which additionally
+// returned -1 on error.
+OPENSSL_EXPORT int RSA_verify(int hash_nid, const uint8_t *msg, size_t msg_len,
+                              const uint8_t *sig, size_t sig_len, RSA *rsa);
+
+// RSA_verify_pss_mgf1 verifies that |sig_len| bytes from |sig| are a valid,
+// RSASSA-PSS signature of |msg_len| bytes at |msg| by |rsa|. It returns one if
+// the signature is valid and zero otherwise. MGF1 is used as the mask
+// generation function.
+//
+// The |md| and |mgf1_md| arguments identify the hash used to calculate |msg|
+// and the MGF1 hash, respectively. If |mgf1_md| is NULL, |md| is
+// used. |salt_len| specifies the expected salt length in bytes.
+//
+// If |salt_len| is -1, then the salt length is the same as the hash length. If
+// -2, then the salt length is recovered and all values accepted. If unsure, use
+// -1.
+OPENSSL_EXPORT int RSA_verify_pss_mgf1(RSA *rsa, const uint8_t *msg,
+                                       size_t msg_len, const EVP_MD *md,
+                                       const EVP_MD *mgf1_md, int salt_len,
+                                       const uint8_t *sig, size_t sig_len);
+
+// RSA_verify_raw verifies |in_len| bytes of signature from |in| using the
+// public key from |rsa| and writes, at most, |max_out| bytes of plaintext to
+// |out|. The |max_out| argument must be, at least, |RSA_size| in order to
+// ensure success.
+//
+// It returns 1 on success or zero on error.
+//
+// The |padding| argument must be one of the |RSA_*_PADDING| values. If in
+// doubt, |RSA_PKCS1_PADDING| is the most common but |RSA_PKCS1_PSS_PADDING|
+// (via |RSA_verify_pss_mgf1| or the |EVP_PKEY| interface) is preferred for new
+// protocols.
+OPENSSL_EXPORT int RSA_verify_raw(RSA *rsa, size_t *out_len, uint8_t *out,
+                                  size_t max_out, const uint8_t *in,
+                                  size_t in_len, int padding);
+
+// RSA_private_encrypt encrypts |flen| bytes from |from| with the private key in
+// |rsa| and writes the encrypted data to |to|. The |to| buffer must have at
+// least |RSA_size| bytes of space. It returns the number of bytes written, or
+// -1 on error. The |padding| argument must be one of the |RSA_*_PADDING|
+// values. If in doubt, |RSA_PKCS1_PADDING| is the most common but
+// |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for new
+// protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_sign_raw| instead.
+OPENSSL_EXPORT int RSA_private_encrypt(size_t flen, const uint8_t *from,
+                                       uint8_t *to, RSA *rsa, int padding);
+
+// RSA_public_decrypt verifies |flen| bytes of signature from |from| using the
+// public key in |rsa| and writes the plaintext to |to|. The |to| buffer must
+// have at least |RSA_size| bytes of space. It returns the number of bytes
+// written, or -1 on error. The |padding| argument must be one of the
+// |RSA_*_PADDING| values. If in doubt, |RSA_PKCS1_PADDING| is the most common
+// but |RSA_PKCS1_PSS_PADDING| (via the |EVP_PKEY| interface) is preferred for
+// new protocols.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |RSA_verify_raw| instead.
+OPENSSL_EXPORT int RSA_public_decrypt(size_t flen, const uint8_t *from,
+                                      uint8_t *to, RSA *rsa, int padding);
+
+
+// Utility functions.
+
+// RSA_size returns the number of bytes in the modulus, which is also the size
+// of a signature or encrypted value using |rsa|.
+OPENSSL_EXPORT unsigned RSA_size(const RSA *rsa);
+
+// RSA_is_opaque returns one if |rsa| is opaque and doesn't expose its key
+// material. Otherwise it returns zero.
+OPENSSL_EXPORT int RSA_is_opaque(const RSA *rsa);
+
+// RSAPublicKey_dup allocates a fresh |RSA| and copies the public key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPublicKey_dup(const RSA *rsa);
+
+// RSAPrivateKey_dup allocates a fresh |RSA| and copies the private key from
+// |rsa| into it. It returns the fresh |RSA| object, or NULL on error.
+OPENSSL_EXPORT RSA *RSAPrivateKey_dup(const RSA *rsa);
+
+// RSA_check_key performs basic validity tests on |rsa|. It returns one if
+// they pass and zero otherwise. Opaque keys and public keys always pass. If it
+// returns zero then a more detailed error is available on the error queue.
+OPENSSL_EXPORT int RSA_check_key(const RSA *rsa);
+
+// RSA_check_fips performs public key validity tests on |key|. It returns one if
+// they pass and zero otherwise. Opaque keys always fail. This function does not
+// mutate |rsa| for thread-safety purposes and may be used concurrently.
+OPENSSL_EXPORT int RSA_check_fips(RSA *key);
+
+// RSA_verify_PKCS1_PSS_mgf1 verifies that |EM| is a correct PSS padding of
+// |mHash|, where |mHash| is a digest produced by |Hash|. |EM| must point to
+// exactly |RSA_size(rsa)| bytes of data. The |mgf1Hash| argument specifies the
+// hash function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is recovered and all values accepted.
+//
+// If unsure, use -1.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS_mgf1(const RSA *rsa,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash,
+                                             const EVP_MD *mgf1Hash,
+                                             const uint8_t *EM, int sLen);
+
+// RSA_padding_add_PKCS1_PSS_mgf1 writes a PSS padding of |mHash| to |EM|,
+// where |mHash| is a digest produced by |Hash|. |RSA_size(rsa)| bytes of
+// output will be written to |EM|. The |mgf1Hash| argument specifies the hash
+// function for generating the mask. If NULL, |Hash| is used. The |sLen|
+// argument specifies the expected salt length in bytes. If |sLen| is -1 then
+// the salt length is the same as the hash length. If -2, then the salt length
+// is maximal given the space in |EM|.
+//
+// It returns one on success or zero on error.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS_mgf1(const RSA *rsa, uint8_t *EM,
+                                                  const uint8_t *mHash,
+                                                  const EVP_MD *Hash,
+                                                  const EVP_MD *mgf1Hash,
+                                                  int sLen);
+
+// RSA_padding_add_PKCS1_OAEP_mgf1 writes an OAEP padding of |from| to |to|
+// with the given parameters and hash functions. If |md| is NULL then SHA-1 is
+// used. If |mgf1md| is NULL then the value of |md| is used (which means SHA-1
+// if that, in turn, is NULL).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP_mgf1(
+    uint8_t *to, size_t to_len, const uint8_t *from, size_t from_len,
+    const uint8_t *param, size_t param_len, const EVP_MD *md,
+    const EVP_MD *mgf1md);
+
+// RSA_add_pkcs1_prefix builds a version of |msg| prefixed with the DigestInfo
+// header for the given hash function and sets |out_msg| to point to it. On
+// successful return, if |*is_alloced| is one, the caller must release
+// |*out_msg| with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_add_pkcs1_prefix(uint8_t **out_msg, size_t *out_msg_len,
+                                        int *is_alloced, int hash_nid,
+                                        const uint8_t *msg, size_t msg_len);
+
+
+// ASN.1 functions.
+
+// RSA_parse_public_key parses a DER-encoded RSAPublicKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_public_key(CBS *cbs);
+
+// RSA_public_key_from_bytes parses |in| as a DER-encoded RSAPublicKey structure
+// (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len);
+
+// RSA_marshal_public_key marshals |rsa| as a DER-encoded RSAPublicKey structure
+// (RFC 3447) and appends the result to |cbb|. It returns one on success and
+// zero on failure.
+OPENSSL_EXPORT int RSA_marshal_public_key(CBB *cbb, const RSA *rsa);
+
+// RSA_public_key_to_bytes marshals |rsa| as a DER-encoded RSAPublicKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_public_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
+                                           const RSA *rsa);
+
+// RSA_parse_private_key parses a DER-encoded RSAPrivateKey structure (RFC 3447)
+// from |cbs| and advances |cbs|. It returns a newly-allocated |RSA| or NULL on
+// error.
+OPENSSL_EXPORT RSA *RSA_parse_private_key(CBS *cbs);
+
+// RSA_private_key_from_bytes parses |in| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447). It returns a newly-allocated |RSA| or NULL on error.
+OPENSSL_EXPORT RSA *RSA_private_key_from_bytes(const uint8_t *in,
+                                               size_t in_len);
+
+// RSA_marshal_private_key marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and appends the result to |cbb|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int RSA_marshal_private_key(CBB *cbb, const RSA *rsa);
+
+// RSA_private_key_to_bytes marshals |rsa| as a DER-encoded RSAPrivateKey
+// structure (RFC 3447) and, on success, sets |*out_bytes| to a newly allocated
+// buffer containing the result and returns one. Otherwise, it returns zero. The
+// result should be freed with |OPENSSL_free|.
+OPENSSL_EXPORT int RSA_private_key_to_bytes(uint8_t **out_bytes,
+                                            size_t *out_len, const RSA *rsa);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int RSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int RSA_set_ex_data(RSA *rsa, int idx, void *arg);
+OPENSSL_EXPORT void *RSA_get_ex_data(const RSA *rsa, int idx);
+
+
+// Flags.
+
+// RSA_FLAG_OPAQUE specifies that this RSA_METHOD does not expose its key
+// material. This may be set if, for instance, it is wrapping some other crypto
+// API, like a platform key store.
+#define RSA_FLAG_OPAQUE 1
+
+// RSA_FLAG_NO_BLINDING disables blinding of private operations, which is a
+// dangerous thing to do. It is deprecated and should not be used. It will
+// be ignored whenever possible.
+//
+// This flag must be used if a key without the public exponent |e| is used for
+// private key operations; avoid using such keys whenever possible.
+#define RSA_FLAG_NO_BLINDING 8
+
+// RSA_FLAG_EXT_PKEY is deprecated and ignored.
+#define RSA_FLAG_EXT_PKEY 0x20
+
+
+// RSA public exponent values.
+
+#define RSA_3 0x3
+#define RSA_F4 0x10001
+
+
+// Deprecated functions.
+
+#define RSA_METHOD_FLAG_NO_CHECK RSA_FLAG_OPAQUE
+
+// RSA_flags returns the flags for |rsa|. These are a bitwise OR of |RSA_FLAG_*|
+// constants.
+OPENSSL_EXPORT int RSA_flags(const RSA *rsa);
+
+// RSA_blinding_on returns one.
+OPENSSL_EXPORT int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
+
+// RSA_generate_key behaves like |RSA_generate_key_ex|, which is what you
+// should use instead. It returns NULL on error, or a newly-allocated |RSA| on
+// success. This function is provided for compatibility only. The |callback|
+// and |cb_arg| parameters must be NULL.
+OPENSSL_EXPORT RSA *RSA_generate_key(int bits, unsigned long e, void *callback,
+                                     void *cb_arg);
+
+// d2i_RSAPublicKey parses an ASN.1, DER-encoded, RSA public key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPublicKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPublicKey(const RSA *in, uint8_t **outp);
+
+// d2i_RSAPrivateKey parses an ASN.1, DER-encoded, RSA private key from |len|
+// bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+// is in |*out|. Note that, even if |*out| is already non-NULL on entry, it
+// will not be written to. Rather, a fresh |RSA| is allocated and the previous
+// one is freed. On successful exit, |*inp| is advanced past the DER structure.
+// It returns the result or NULL on error.
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey(RSA **out, const uint8_t **inp, long len);
+
+// i2d_RSAPrivateKey marshals |in| to an ASN.1, DER structure. If |outp| is not
+// NULL then the result is written to |*outp| and |*outp| is advanced just past
+// the output. It returns the number of bytes in the result, whether written or
+// not, or a negative value on error.
+OPENSSL_EXPORT int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp);
+
+// RSA_padding_add_PKCS1_PSS acts like |RSA_padding_add_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_sign_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_PSS(const RSA *rsa, uint8_t *EM,
+                                             const uint8_t *mHash,
+                                             const EVP_MD *Hash, int sLen);
+
+// RSA_verify_PKCS1_PSS acts like |RSA_verify_PKCS1_PSS_mgf1| but the
+// |mgf1Hash| parameter of the latter is implicitly set to |Hash|.
+//
+// This function implements only the low-level padding logic. Use
+// |RSA_verify_pss_mgf1| instead.
+OPENSSL_EXPORT int RSA_verify_PKCS1_PSS(const RSA *rsa, const uint8_t *mHash,
+                                        const EVP_MD *Hash, const uint8_t *EM,
+                                        int sLen);
+
+// RSA_padding_add_PKCS1_OAEP acts like |RSA_padding_add_PKCS1_OAEP_mgf1| but
+// the |md| and |mgf1md| parameters of the latter are implicitly set to NULL,
+// which means SHA-1.
+OPENSSL_EXPORT int RSA_padding_add_PKCS1_OAEP(uint8_t *to, size_t to_len,
+                                              const uint8_t *from,
+                                              size_t from_len,
+                                              const uint8_t *param,
+                                              size_t param_len);
+
+// RSA_print prints a textual representation of |rsa| to |bio|. It returns one
+// on success or zero otherwise.
+OPENSSL_EXPORT int RSA_print(BIO *bio, const RSA *rsa, int indent);
+
+
+struct rsa_meth_st {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(RSA *rsa);
+  int (*finish)(RSA *rsa);
+
+  // size returns the size of the RSA modulus in bytes.
+  size_t (*size)(const RSA *rsa);
+
+  int (*sign)(int type, const uint8_t *m, unsigned int m_length,
+              uint8_t *sigret, unsigned int *siglen, const RSA *rsa);
+
+  // These functions mirror the |RSA_*| functions of the same name.
+  int (*sign_raw)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                  const uint8_t *in, size_t in_len, int padding);
+  int (*decrypt)(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
+                 const uint8_t *in, size_t in_len, int padding);
+
+  // private_transform takes a big-endian integer from |in|, calculates the
+  // d'th power of it, modulo the RSA modulus and writes the result as a
+  // big-endian integer to |out|. Both |in| and |out| are |len| bytes long and
+  // |len| is always equal to |RSA_size(rsa)|. If the result of the transform
+  // can be represented in fewer than |len| bytes, then |out| must be zero
+  // padded on the left.
+  //
+  // It returns one on success and zero otherwise.
+  //
+  // RSA decrypt and sign operations will call this, thus an ENGINE might wish
+  // to override it in order to avoid having to implement the padding
+  // functionality demanded by those, higher level, operations.
+  int (*private_transform)(RSA *rsa, uint8_t *out, const uint8_t *in,
+                           size_t len);
+
+  int flags;
+};
+
+
+// Private functions.
+
+typedef struct bn_blinding_st BN_BLINDING;
+
+struct rsa_st {
+  RSA_METHOD *meth;
+
+  // Access to the following fields was historically allowed, but
+  // deprecated. Use |RSA_get0_*| and |RSA_set0_*| instead. Access to all other
+  // fields is forbidden and will cause threading errors.
+  BIGNUM *n;
+  BIGNUM *e;
+  BIGNUM *d;
+  BIGNUM *p;
+  BIGNUM *q;
+  BIGNUM *dmp1;
+  BIGNUM *dmq1;
+  BIGNUM *iqmp;
+
+  // be careful using this if the RSA structure is shared
+  CRYPTO_EX_DATA ex_data;
+  CRYPTO_refcount_t references;
+  int flags;
+
+  CRYPTO_MUTEX lock;
+
+  // Used to cache montgomery values. The creation of these values is protected
+  // by |lock|.
+  BN_MONT_CTX *mont_n;
+  BN_MONT_CTX *mont_p;
+  BN_MONT_CTX *mont_q;
+
+  // The following fields are copies of |d|, |dmp1|, and |dmq1|, respectively,
+  // but with the correct widths to prevent side channels. These must use
+  // separate copies due to threading concerns caused by OpenSSL's API
+  // mistakes. See https://github.com/openssl/openssl/issues/5158 and
+  // the |freeze_private_key| implementation.
+  BIGNUM *d_fixed, *dmp1_fixed, *dmq1_fixed;
+
+  // inv_small_mod_large_mont is q^-1 mod p in Montgomery form, using |mont_p|,
+  // if |p| >= |q|. Otherwise, it is p^-1 mod q in Montgomery form, using
+  // |mont_q|.
+  BIGNUM *inv_small_mod_large_mont;
+
+  // num_blindings contains the size of the |blindings| and |blindings_inuse|
+  // arrays. This member and the |blindings_inuse| array are protected by
+  // |lock|.
+  unsigned num_blindings;
+  // blindings is an array of BN_BLINDING structures that can be reserved by a
+  // thread by locking |lock| and changing the corresponding element in
+  // |blindings_inuse| from 0 to 1.
+  BN_BLINDING **blindings;
+  unsigned char *blindings_inuse;
+
+  // private_key_frozen is one if the key has been used for a private key
+  // operation and may no longer be mutated.
+  unsigned private_key_frozen:1;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(RSA, RSA_free)
+BORINGSSL_MAKE_UP_REF(RSA, RSA_up_ref)
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif
+
+#define RSA_R_BAD_ENCODING 100
+#define RSA_R_BAD_E_VALUE 101
+#define RSA_R_BAD_FIXED_HEADER_DECRYPT 102
+#define RSA_R_BAD_PAD_BYTE_COUNT 103
+#define RSA_R_BAD_RSA_PARAMETERS 104
+#define RSA_R_BAD_SIGNATURE 105
+#define RSA_R_BAD_VERSION 106
+#define RSA_R_BLOCK_TYPE_IS_NOT_01 107
+#define RSA_R_BN_NOT_INITIALIZED 108
+#define RSA_R_CANNOT_RECOVER_MULTI_PRIME_KEY 109
+#define RSA_R_CRT_PARAMS_ALREADY_GIVEN 110
+#define RSA_R_CRT_VALUES_INCORRECT 111
+#define RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN 112
+#define RSA_R_DATA_TOO_LARGE 113
+#define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 114
+#define RSA_R_DATA_TOO_LARGE_FOR_MODULUS 115
+#define RSA_R_DATA_TOO_SMALL 116
+#define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE 117
+#define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY 118
+#define RSA_R_D_E_NOT_CONGRUENT_TO_1 119
+#define RSA_R_EMPTY_PUBLIC_KEY 120
+#define RSA_R_ENCODE_ERROR 121
+#define RSA_R_FIRST_OCTET_INVALID 122
+#define RSA_R_INCONSISTENT_SET_OF_CRT_VALUES 123
+#define RSA_R_INTERNAL_ERROR 124
+#define RSA_R_INVALID_MESSAGE_LENGTH 125
+#define RSA_R_KEY_SIZE_TOO_SMALL 126
+#define RSA_R_LAST_OCTET_INVALID 127
+#define RSA_R_MODULUS_TOO_LARGE 128
+#define RSA_R_MUST_HAVE_AT_LEAST_TWO_PRIMES 129
+#define RSA_R_NO_PUBLIC_EXPONENT 130
+#define RSA_R_NULL_BEFORE_BLOCK_MISSING 131
+#define RSA_R_N_NOT_EQUAL_P_Q 132
+#define RSA_R_OAEP_DECODING_ERROR 133
+#define RSA_R_ONLY_ONE_OF_P_Q_GIVEN 134
+#define RSA_R_OUTPUT_BUFFER_TOO_SMALL 135
+#define RSA_R_PADDING_CHECK_FAILED 136
+#define RSA_R_PKCS_DECODING_ERROR 137
+#define RSA_R_SLEN_CHECK_FAILED 138
+#define RSA_R_SLEN_RECOVERY_FAILED 139
+#define RSA_R_TOO_LONG 140
+#define RSA_R_TOO_MANY_ITERATIONS 141
+#define RSA_R_UNKNOWN_ALGORITHM_TYPE 142
+#define RSA_R_UNKNOWN_PADDING_TYPE 143
+#define RSA_R_VALUE_MISSING 144
+#define RSA_R_WRONG_SIGNATURE_LENGTH 145
+#define RSA_R_PUBLIC_KEY_VALIDATION_FAILED 146
+#define RSA_R_D_OUT_OF_RANGE 147
+#define RSA_R_BLOCK_TYPE_IS_NOT_02 148
+
+#endif  // OPENSSL_HEADER_RSA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h
new file mode 100644
index 0000000..6e5e433
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.back
new file mode 100644
index 0000000..6e5e433
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.grpc_back
new file mode 100644
index 0000000..6e5e433
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/safestack.h.grpc_back	
@@ -0,0 +1,16 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h
new file mode 100644
index 0000000..c27189e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h	
@@ -0,0 +1,268 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_SHA_H
+#define OPENSSL_HEADER_SHA_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The SHA family of hash functions (SHA-1 and SHA-2).
+
+
+// SHA_CBLOCK is the block size of SHA-1.
+#define SHA_CBLOCK 64
+
+// SHA_DIGEST_LENGTH is the length of a SHA-1 digest.
+#define SHA_DIGEST_LENGTH 20
+
+// SHA1_Init initialises |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Init(SHA_CTX *sha);
+
+// SHA1_Update adds |len| bytes from |data| to |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Update(SHA_CTX *sha, const void *data, size_t len);
+
+// SHA1_Final adds the final padding to |sha| and writes the resulting digest to
+// |out|, which must have at least |SHA_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int SHA1_Final(uint8_t out[SHA_DIGEST_LENGTH], SHA_CTX *sha);
+
+// SHA1 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA1(const uint8_t *data, size_t len,
+                             uint8_t out[SHA_DIGEST_LENGTH]);
+
+// SHA1_Transform is a low-level function that performs a single, SHA-1 block
+// transformation using the state from |sha| and |SHA_CBLOCK| bytes from
+// |block|.
+OPENSSL_EXPORT void SHA1_Transform(SHA_CTX *sha,
+                                   const uint8_t block[SHA_CBLOCK]);
+
+struct sha_state_st {
+#if defined(OPENSSL_WINDOWS)
+  uint32_t h[5];
+#else
+  // wpa_supplicant accesses |h0|..|h4| so we must support those names
+  // for compatibility with it until it can be updated.
+  union {
+    uint32_t h[5];
+    struct {
+      uint32_t h0;
+      uint32_t h1;
+      uint32_t h2;
+      uint32_t h3;
+      uint32_t h4;
+    };
+  };
+#endif
+  uint32_t Nl, Nh;
+  uint8_t data[SHA_CBLOCK];
+  unsigned num;
+};
+
+
+// SHA-224.
+
+// SHA224_CBLOCK is the block size of SHA-224.
+#define SHA224_CBLOCK 64
+
+// SHA224_DIGEST_LENGTH is the length of a SHA-224 digest.
+#define SHA224_DIGEST_LENGTH 28
+
+// SHA224_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Init(SHA256_CTX *sha);
+
+// SHA224_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA224_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA224_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA224 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA224_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA224(const uint8_t *data, size_t len,
+                               uint8_t out[SHA224_DIGEST_LENGTH]);
+
+
+// SHA-256.
+
+// SHA256_CBLOCK is the block size of SHA-256.
+#define SHA256_CBLOCK 64
+
+// SHA256_DIGEST_LENGTH is the length of a SHA-256 digest.
+#define SHA256_DIGEST_LENGTH 32
+
+// SHA256_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Init(SHA256_CTX *sha);
+
+// SHA256_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA256_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA256_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA256 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA256_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA256(const uint8_t *data, size_t len,
+                               uint8_t out[SHA256_DIGEST_LENGTH]);
+
+// SHA256_Transform is a low-level function that performs a single, SHA-256
+// block transformation using the state from |sha| and |SHA256_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA256_Transform(SHA256_CTX *sha,
+                                     const uint8_t block[SHA256_CBLOCK]);
+
+// SHA256_TransformBlocks is a low-level function that takes |num_blocks| *
+// |SHA256_CBLOCK| bytes of data and performs SHA-256 transforms on it to update
+// |state|. You should not use this function unless you are implementing a
+// derivative of SHA-256.
+OPENSSL_EXPORT void SHA256_TransformBlocks(uint32_t state[8],
+                                           const uint8_t *data,
+                                           size_t num_blocks);
+
+struct sha256_state_st {
+  uint32_t h[8];
+  uint32_t Nl, Nh;
+  uint8_t data[SHA256_CBLOCK];
+  unsigned num, md_len;
+};
+
+
+// SHA-384.
+
+// SHA384_CBLOCK is the block size of SHA-384.
+#define SHA384_CBLOCK 128
+
+// SHA384_DIGEST_LENGTH is the length of a SHA-384 digest.
+#define SHA384_DIGEST_LENGTH 48
+
+// SHA384_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Init(SHA512_CTX *sha);
+
+// SHA384_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA384_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA384_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA384 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA384_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA384(const uint8_t *data, size_t len,
+                               uint8_t out[SHA384_DIGEST_LENGTH]);
+
+
+// SHA-512.
+
+// SHA512_CBLOCK is the block size of SHA-512.
+#define SHA512_CBLOCK 128
+
+// SHA512_DIGEST_LENGTH is the length of a SHA-512 digest.
+#define SHA512_DIGEST_LENGTH 64
+
+// SHA512_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Init(SHA512_CTX *sha);
+
+// SHA512_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA512_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA512_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA512 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA512_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA512(const uint8_t *data, size_t len,
+                               uint8_t out[SHA512_DIGEST_LENGTH]);
+
+// SHA512_Transform is a low-level function that performs a single, SHA-512
+// block transformation using the state from |sha| and |SHA512_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA512_Transform(SHA512_CTX *sha,
+                                     const uint8_t block[SHA512_CBLOCK]);
+
+struct sha512_state_st {
+  uint64_t h[8];
+  uint64_t Nl, Nh;
+  uint8_t p[128];
+  unsigned num, md_len;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.back
new file mode 100644
index 0000000..b163e6a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.back	
@@ -0,0 +1,268 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_SHA_H
+#define OPENSSL_HEADER_SHA_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The SHA family of hash functions (SHA-1 and SHA-2).
+
+
+// SHA_CBLOCK is the block size of SHA-1.
+#define SHA_CBLOCK 64
+
+// SHA_DIGEST_LENGTH is the length of a SHA-1 digest.
+#define SHA_DIGEST_LENGTH 20
+
+// SHA1_Init initialises |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Init(SHA_CTX *sha);
+
+// SHA1_Update adds |len| bytes from |data| to |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Update(SHA_CTX *sha, const void *data, size_t len);
+
+// SHA1_Final adds the final padding to |sha| and writes the resulting digest to
+// |out|, which must have at least |SHA_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int SHA1_Final(uint8_t out[SHA_DIGEST_LENGTH], SHA_CTX *sha);
+
+// SHA1 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA1(const uint8_t *data, size_t len,
+                             uint8_t out[SHA_DIGEST_LENGTH]);
+
+// SHA1_Transform is a low-level function that performs a single, SHA-1 block
+// transformation using the state from |sha| and |SHA_CBLOCK| bytes from
+// |block|.
+OPENSSL_EXPORT void SHA1_Transform(SHA_CTX *sha,
+                                   const uint8_t block[SHA_CBLOCK]);
+
+struct sha_state_st {
+#if defined(OPENSSL_WINDOWS)
+  uint32_t h[5];
+#else
+  // wpa_supplicant accesses |h0|..|h4| so we must support those names
+  // for compatibility with it until it can be updated.
+  union {
+    uint32_t h[5];
+    struct {
+      uint32_t h0;
+      uint32_t h1;
+      uint32_t h2;
+      uint32_t h3;
+      uint32_t h4;
+    };
+  };
+#endif
+  uint32_t Nl, Nh;
+  uint8_t data[SHA_CBLOCK];
+  unsigned num;
+};
+
+
+// SHA-224.
+
+// SHA224_CBLOCK is the block size of SHA-224.
+#define SHA224_CBLOCK 64
+
+// SHA224_DIGEST_LENGTH is the length of a SHA-224 digest.
+#define SHA224_DIGEST_LENGTH 28
+
+// SHA224_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Init(SHA256_CTX *sha);
+
+// SHA224_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA224_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA224_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA224 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA224_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA224(const uint8_t *data, size_t len,
+                               uint8_t out[SHA224_DIGEST_LENGTH]);
+
+
+// SHA-256.
+
+// SHA256_CBLOCK is the block size of SHA-256.
+#define SHA256_CBLOCK 64
+
+// SHA256_DIGEST_LENGTH is the length of a SHA-256 digest.
+#define SHA256_DIGEST_LENGTH 32
+
+// SHA256_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Init(SHA256_CTX *sha);
+
+// SHA256_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA256_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA256_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA256 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA256_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA256(const uint8_t *data, size_t len,
+                               uint8_t out[SHA256_DIGEST_LENGTH]);
+
+// SHA256_Transform is a low-level function that performs a single, SHA-256
+// block transformation using the state from |sha| and |SHA256_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA256_Transform(SHA256_CTX *sha,
+                                     const uint8_t block[SHA256_CBLOCK]);
+
+// SHA256_TransformBlocks is a low-level function that takes |num_blocks| *
+// |SHA256_CBLOCK| bytes of data and performs SHA-256 transforms on it to update
+// |state|. You should not use this function unless you are implementing a
+// derivative of SHA-256.
+OPENSSL_EXPORT void SHA256_TransformBlocks(uint32_t state[8],
+                                           const uint8_t *data,
+                                           size_t num_blocks);
+
+struct sha256_state_st {
+  uint32_t h[8];
+  uint32_t Nl, Nh;
+  uint8_t data[SHA256_CBLOCK];
+  unsigned num, md_len;
+};
+
+
+// SHA-384.
+
+// SHA384_CBLOCK is the block size of SHA-384.
+#define SHA384_CBLOCK 128
+
+// SHA384_DIGEST_LENGTH is the length of a SHA-384 digest.
+#define SHA384_DIGEST_LENGTH 48
+
+// SHA384_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Init(SHA512_CTX *sha);
+
+// SHA384_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA384_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA384_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA384 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA384_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA384(const uint8_t *data, size_t len,
+                               uint8_t out[SHA384_DIGEST_LENGTH]);
+
+
+// SHA-512.
+
+// SHA512_CBLOCK is the block size of SHA-512.
+#define SHA512_CBLOCK 128
+
+// SHA512_DIGEST_LENGTH is the length of a SHA-512 digest.
+#define SHA512_DIGEST_LENGTH 64
+
+// SHA512_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Init(SHA512_CTX *sha);
+
+// SHA512_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA512_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA512_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA512 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA512_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA512(const uint8_t *data, size_t len,
+                               uint8_t out[SHA512_DIGEST_LENGTH]);
+
+// SHA512_Transform is a low-level function that performs a single, SHA-512
+// block transformation using the state from |sha| and |SHA512_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA512_Transform(SHA512_CTX *sha,
+                                     const uint8_t block[SHA512_CBLOCK]);
+
+struct sha512_state_st {
+  uint64_t h[8];
+  uint64_t Nl, Nh;
+  uint8_t p[128];
+  unsigned num, md_len;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.grpc_back
new file mode 100644
index 0000000..b163e6a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/sha.h.grpc_back	
@@ -0,0 +1,268 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_SHA_H
+#define OPENSSL_HEADER_SHA_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// The SHA family of hash functions (SHA-1 and SHA-2).
+
+
+// SHA_CBLOCK is the block size of SHA-1.
+#define SHA_CBLOCK 64
+
+// SHA_DIGEST_LENGTH is the length of a SHA-1 digest.
+#define SHA_DIGEST_LENGTH 20
+
+// SHA1_Init initialises |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Init(SHA_CTX *sha);
+
+// SHA1_Update adds |len| bytes from |data| to |sha| and returns one.
+OPENSSL_EXPORT int SHA1_Update(SHA_CTX *sha, const void *data, size_t len);
+
+// SHA1_Final adds the final padding to |sha| and writes the resulting digest to
+// |out|, which must have at least |SHA_DIGEST_LENGTH| bytes of space. It
+// returns one.
+OPENSSL_EXPORT int SHA1_Final(uint8_t out[SHA_DIGEST_LENGTH], SHA_CTX *sha);
+
+// SHA1 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA1(const uint8_t *data, size_t len,
+                             uint8_t out[SHA_DIGEST_LENGTH]);
+
+// SHA1_Transform is a low-level function that performs a single, SHA-1 block
+// transformation using the state from |sha| and |SHA_CBLOCK| bytes from
+// |block|.
+OPENSSL_EXPORT void SHA1_Transform(SHA_CTX *sha,
+                                   const uint8_t block[SHA_CBLOCK]);
+
+struct sha_state_st {
+#if defined(OPENSSL_WINDOWS)
+  uint32_t h[5];
+#else
+  // wpa_supplicant accesses |h0|..|h4| so we must support those names
+  // for compatibility with it until it can be updated.
+  union {
+    uint32_t h[5];
+    struct {
+      uint32_t h0;
+      uint32_t h1;
+      uint32_t h2;
+      uint32_t h3;
+      uint32_t h4;
+    };
+  };
+#endif
+  uint32_t Nl, Nh;
+  uint8_t data[SHA_CBLOCK];
+  unsigned num;
+};
+
+
+// SHA-224.
+
+// SHA224_CBLOCK is the block size of SHA-224.
+#define SHA224_CBLOCK 64
+
+// SHA224_DIGEST_LENGTH is the length of a SHA-224 digest.
+#define SHA224_DIGEST_LENGTH 28
+
+// SHA224_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Init(SHA256_CTX *sha);
+
+// SHA224_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA224_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA224_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA224_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA224 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA224_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA224(const uint8_t *data, size_t len,
+                               uint8_t out[SHA224_DIGEST_LENGTH]);
+
+
+// SHA-256.
+
+// SHA256_CBLOCK is the block size of SHA-256.
+#define SHA256_CBLOCK 64
+
+// SHA256_DIGEST_LENGTH is the length of a SHA-256 digest.
+#define SHA256_DIGEST_LENGTH 32
+
+// SHA256_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Init(SHA256_CTX *sha);
+
+// SHA256_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA256_Update(SHA256_CTX *sha, const void *data, size_t len);
+
+// SHA256_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA256_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH],
+                                SHA256_CTX *sha);
+
+// SHA256 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA256_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA256(const uint8_t *data, size_t len,
+                               uint8_t out[SHA256_DIGEST_LENGTH]);
+
+// SHA256_Transform is a low-level function that performs a single, SHA-256
+// block transformation using the state from |sha| and |SHA256_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA256_Transform(SHA256_CTX *sha,
+                                     const uint8_t block[SHA256_CBLOCK]);
+
+// SHA256_TransformBlocks is a low-level function that takes |num_blocks| *
+// |SHA256_CBLOCK| bytes of data and performs SHA-256 transforms on it to update
+// |state|. You should not use this function unless you are implementing a
+// derivative of SHA-256.
+OPENSSL_EXPORT void SHA256_TransformBlocks(uint32_t state[8],
+                                           const uint8_t *data,
+                                           size_t num_blocks);
+
+struct sha256_state_st {
+  uint32_t h[8];
+  uint32_t Nl, Nh;
+  uint8_t data[SHA256_CBLOCK];
+  unsigned num, md_len;
+};
+
+
+// SHA-384.
+
+// SHA384_CBLOCK is the block size of SHA-384.
+#define SHA384_CBLOCK 128
+
+// SHA384_DIGEST_LENGTH is the length of a SHA-384 digest.
+#define SHA384_DIGEST_LENGTH 48
+
+// SHA384_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Init(SHA512_CTX *sha);
+
+// SHA384_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA384_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA384_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA384_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA384_Final(uint8_t out[SHA384_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA384 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA384_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA384(const uint8_t *data, size_t len,
+                               uint8_t out[SHA384_DIGEST_LENGTH]);
+
+
+// SHA-512.
+
+// SHA512_CBLOCK is the block size of SHA-512.
+#define SHA512_CBLOCK 128
+
+// SHA512_DIGEST_LENGTH is the length of a SHA-512 digest.
+#define SHA512_DIGEST_LENGTH 64
+
+// SHA512_Init initialises |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Init(SHA512_CTX *sha);
+
+// SHA512_Update adds |len| bytes from |data| to |sha| and returns 1.
+OPENSSL_EXPORT int SHA512_Update(SHA512_CTX *sha, const void *data, size_t len);
+
+// SHA512_Final adds the final padding to |sha| and writes the resulting digest
+// to |out|, which must have at least |SHA512_DIGEST_LENGTH| bytes of space. It
+// returns one on success and zero on programmer error.
+OPENSSL_EXPORT int SHA512_Final(uint8_t out[SHA512_DIGEST_LENGTH],
+                                SHA512_CTX *sha);
+
+// SHA512 writes the digest of |len| bytes from |data| to |out| and returns
+// |out|. There must be at least |SHA512_DIGEST_LENGTH| bytes of space in
+// |out|.
+OPENSSL_EXPORT uint8_t *SHA512(const uint8_t *data, size_t len,
+                               uint8_t out[SHA512_DIGEST_LENGTH]);
+
+// SHA512_Transform is a low-level function that performs a single, SHA-512
+// block transformation using the state from |sha| and |SHA512_CBLOCK| bytes
+// from |block|.
+OPENSSL_EXPORT void SHA512_Transform(SHA512_CTX *sha,
+                                     const uint8_t block[SHA512_CBLOCK]);
+
+struct sha512_state_st {
+  uint64_t h[8];
+  uint64_t Nl, Nh;
+  uint8_t p[128];
+  unsigned num, md_len;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SHA_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h
new file mode 100644
index 0000000..32283ef
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h	
@@ -0,0 +1,37 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SIPHASH_H
+#define OPENSSL_HEADER_SIPHASH_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SipHash is a fast, secure PRF that is often used for hash tables.
+
+
+// SIPHASH_24 implements SipHash-2-4. See https://131002.net/siphash/siphash.pdf
+OPENSSL_EXPORT uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                                   size_t input_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SIPHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.back
new file mode 100644
index 0000000..fe08aa7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.back	
@@ -0,0 +1,37 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SIPHASH_H
+#define OPENSSL_HEADER_SIPHASH_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SipHash is a fast, secure PRF that is often used for hash tables.
+
+
+// SIPHASH_24 implements SipHash-2-4. See https://131002.net/siphash/siphash.pdf
+OPENSSL_EXPORT uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                                   size_t input_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SIPHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.grpc_back
new file mode 100644
index 0000000..fe08aa7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/siphash.h.grpc_back	
@@ -0,0 +1,37 @@
+/* Copyright (c) 2019, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SIPHASH_H
+#define OPENSSL_HEADER_SIPHASH_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SipHash is a fast, secure PRF that is often used for hash tables.
+
+
+// SIPHASH_24 implements SipHash-2-4. See https://131002.net/siphash/siphash.pdf
+OPENSSL_EXPORT uint64_t SIPHASH_24(const uint64_t key[2], const uint8_t *input,
+                                   size_t input_len);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SIPHASH_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h
new file mode 100644
index 0000000..299d247
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h	
@@ -0,0 +1,199 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SSL_SPAN_H
+#define OPENSSL_HEADER_SSL_SPAN_H
+
+#include <openssl_grpc/base.h>
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <algorithm>
+#include <cstdlib>
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+template <typename T>
+class Span;
+
+namespace internal {
+template <typename T>
+class SpanBase {
+  // Put comparison operator implementations into a base class with const T, so
+  // they can be used with any type that implicitly converts into a Span.
+  static_assert(std::is_const<T>::value,
+                "Span<T> must be derived from SpanBase<const T>");
+
+  friend bool operator==(Span<T> lhs, Span<T> rhs) {
+    // MSVC issues warning C4996 because std::equal is unsafe. The pragma to
+    // suppress the warning mysteriously has no effect, hence this
+    // implementation. See
+    // https://msdn.microsoft.com/en-us/library/aa985974.aspx.
+    if (lhs.size() != rhs.size()) {
+      return false;
+    }
+    for (T *l = lhs.begin(), *r = rhs.begin(); l != lhs.end() && r != rhs.end();
+         ++l, ++r) {
+      if (*l != *r) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  friend bool operator!=(Span<T> lhs, Span<T> rhs) { return !(lhs == rhs); }
+};
+}  // namespace internal
+
+// A Span<T> is a non-owning reference to a contiguous array of objects of type
+// |T|. Conceptually, a Span is a simple a pointer to |T| and a count of
+// elements accessible via that pointer. The elements referenced by the Span can
+// be mutated if |T| is mutable.
+//
+// A Span can be constructed from container types implementing |data()| and
+// |size()| methods. If |T| is constant, construction from a container type is
+// implicit. This allows writing methods that accept data from some unspecified
+// container type:
+//
+// // Foo views data referenced by v.
+// void Foo(bssl::Span<const uint8_t> v) { ... }
+//
+// std::vector<uint8_t> vec;
+// Foo(vec);
+//
+// For mutable Spans, conversion is explicit:
+//
+// // FooMutate mutates data referenced by v.
+// void FooMutate(bssl::Span<uint8_t> v) { ... }
+//
+// FooMutate(bssl::Span<uint8_t>(vec));
+//
+// You can also use the |MakeSpan| and |MakeConstSpan| factory methods to
+// construct Spans in order to deduce the type of the Span automatically.
+//
+// FooMutate(bssl::MakeSpan(vec));
+//
+// Note that Spans have value type sematics. They are cheap to construct and
+// copy, and should be passed by value whenever a method would otherwise accept
+// a reference or pointer to a container or array.
+template <typename T>
+class Span : private internal::SpanBase<const T> {
+ private:
+  // Heuristically test whether C is a container type that can be converted into
+  // a Span by checking for data() and size() member functions.
+  //
+  // TODO(davidben): Switch everything to std::enable_if_t when we remove
+  // support for MSVC 2015. Although we could write our own enable_if_t and MSVC
+  // 2015 has std::enable_if_t anyway, MSVC 2015's SFINAE implementation is
+  // problematic and does not work below unless we write the ::type at use.
+  template <typename C>
+  using EnableIfContainer = std::enable_if<
+      std::is_convertible<decltype(std::declval<C>().data()), T *>::value &&
+      std::is_integral<decltype(std::declval<C>().size())>::value>;
+
+  static const size_t npos = static_cast<size_t>(-1);
+
+ public:
+  constexpr Span() : Span(nullptr, 0) {}
+  constexpr Span(T *ptr, size_t len) : data_(ptr), size_(len) {}
+
+  template <size_t N>
+  constexpr Span(T (&array)[N]) : Span(array, N) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<std::is_const<T>::value, C>::type>
+  Span(const C &container) : data_(container.data()), size_(container.size()) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<!std::is_const<T>::value, C>::type>
+  explicit Span(C &container)
+      : data_(container.data()), size_(container.size()) {}
+
+  T *data() const { return data_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  T *begin() const { return data_; }
+  const T *cbegin() const { return data_; }
+  T *end() const { return data_ + size_; }
+  const T *cend() const { return end(); }
+
+  T &front() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[0];
+  }
+  T &back() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[size_ - 1];
+  }
+
+  T &operator[](size_t i) const {
+    if (i >= size_) {
+      abort();
+    }
+    return data_[i];
+  }
+  T &at(size_t i) const { return (*this)[i]; }
+
+  Span subspan(size_t pos = 0, size_t len = npos) const {
+    if (pos > size_) {
+      abort();  // absl::Span throws an exception here.
+    }
+    return Span(data_ + pos, std::min(size_ - pos, len));
+  }
+
+ private:
+  T *data_;
+  size_t size_;
+};
+
+template <typename T>
+const size_t Span<T>::npos;
+
+template <typename T>
+Span<T> MakeSpan(T *ptr, size_t size) {
+  return Span<T>(ptr, size);
+}
+
+template <typename C>
+auto MakeSpan(C &c) -> decltype(MakeSpan(c.data(), c.size())) {
+  return MakeSpan(c.data(), c.size());
+}
+
+template <typename T>
+Span<const T> MakeConstSpan(T *ptr, size_t size) {
+  return Span<const T>(ptr, size);
+}
+
+template <typename C>
+auto MakeConstSpan(const C &c) -> decltype(MakeConstSpan(c.data(), c.size())) {
+  return MakeConstSpan(c.data(), c.size());
+}
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif  // OPENSSL_HEADER_SSL_SPAN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.back
new file mode 100644
index 0000000..1d732eb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.back	
@@ -0,0 +1,199 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SSL_SPAN_H
+#define OPENSSL_HEADER_SSL_SPAN_H
+
+#include <openssl/base.h>
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <algorithm>
+#include <cstdlib>
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+template <typename T>
+class Span;
+
+namespace internal {
+template <typename T>
+class SpanBase {
+  // Put comparison operator implementations into a base class with const T, so
+  // they can be used with any type that implicitly converts into a Span.
+  static_assert(std::is_const<T>::value,
+                "Span<T> must be derived from SpanBase<const T>");
+
+  friend bool operator==(Span<T> lhs, Span<T> rhs) {
+    // MSVC issues warning C4996 because std::equal is unsafe. The pragma to
+    // suppress the warning mysteriously has no effect, hence this
+    // implementation. See
+    // https://msdn.microsoft.com/en-us/library/aa985974.aspx.
+    if (lhs.size() != rhs.size()) {
+      return false;
+    }
+    for (T *l = lhs.begin(), *r = rhs.begin(); l != lhs.end() && r != rhs.end();
+         ++l, ++r) {
+      if (*l != *r) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  friend bool operator!=(Span<T> lhs, Span<T> rhs) { return !(lhs == rhs); }
+};
+}  // namespace internal
+
+// A Span<T> is a non-owning reference to a contiguous array of objects of type
+// |T|. Conceptually, a Span is a simple a pointer to |T| and a count of
+// elements accessible via that pointer. The elements referenced by the Span can
+// be mutated if |T| is mutable.
+//
+// A Span can be constructed from container types implementing |data()| and
+// |size()| methods. If |T| is constant, construction from a container type is
+// implicit. This allows writing methods that accept data from some unspecified
+// container type:
+//
+// // Foo views data referenced by v.
+// void Foo(bssl::Span<const uint8_t> v) { ... }
+//
+// std::vector<uint8_t> vec;
+// Foo(vec);
+//
+// For mutable Spans, conversion is explicit:
+//
+// // FooMutate mutates data referenced by v.
+// void FooMutate(bssl::Span<uint8_t> v) { ... }
+//
+// FooMutate(bssl::Span<uint8_t>(vec));
+//
+// You can also use the |MakeSpan| and |MakeConstSpan| factory methods to
+// construct Spans in order to deduce the type of the Span automatically.
+//
+// FooMutate(bssl::MakeSpan(vec));
+//
+// Note that Spans have value type sematics. They are cheap to construct and
+// copy, and should be passed by value whenever a method would otherwise accept
+// a reference or pointer to a container or array.
+template <typename T>
+class Span : private internal::SpanBase<const T> {
+ private:
+  // Heuristically test whether C is a container type that can be converted into
+  // a Span by checking for data() and size() member functions.
+  //
+  // TODO(davidben): Switch everything to std::enable_if_t when we remove
+  // support for MSVC 2015. Although we could write our own enable_if_t and MSVC
+  // 2015 has std::enable_if_t anyway, MSVC 2015's SFINAE implementation is
+  // problematic and does not work below unless we write the ::type at use.
+  template <typename C>
+  using EnableIfContainer = std::enable_if<
+      std::is_convertible<decltype(std::declval<C>().data()), T *>::value &&
+      std::is_integral<decltype(std::declval<C>().size())>::value>;
+
+  static const size_t npos = static_cast<size_t>(-1);
+
+ public:
+  constexpr Span() : Span(nullptr, 0) {}
+  constexpr Span(T *ptr, size_t len) : data_(ptr), size_(len) {}
+
+  template <size_t N>
+  constexpr Span(T (&array)[N]) : Span(array, N) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<std::is_const<T>::value, C>::type>
+  Span(const C &container) : data_(container.data()), size_(container.size()) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<!std::is_const<T>::value, C>::type>
+  explicit Span(C &container)
+      : data_(container.data()), size_(container.size()) {}
+
+  T *data() const { return data_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  T *begin() const { return data_; }
+  const T *cbegin() const { return data_; }
+  T *end() const { return data_ + size_; }
+  const T *cend() const { return end(); }
+
+  T &front() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[0];
+  }
+  T &back() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[size_ - 1];
+  }
+
+  T &operator[](size_t i) const {
+    if (i >= size_) {
+      abort();
+    }
+    return data_[i];
+  }
+  T &at(size_t i) const { return (*this)[i]; }
+
+  Span subspan(size_t pos = 0, size_t len = npos) const {
+    if (pos > size_) {
+      abort();  // absl::Span throws an exception here.
+    }
+    return Span(data_ + pos, std::min(size_ - pos, len));
+  }
+
+ private:
+  T *data_;
+  size_t size_;
+};
+
+template <typename T>
+const size_t Span<T>::npos;
+
+template <typename T>
+Span<T> MakeSpan(T *ptr, size_t size) {
+  return Span<T>(ptr, size);
+}
+
+template <typename C>
+auto MakeSpan(C &c) -> decltype(MakeSpan(c.data(), c.size())) {
+  return MakeSpan(c.data(), c.size());
+}
+
+template <typename T>
+Span<const T> MakeConstSpan(T *ptr, size_t size) {
+  return Span<const T>(ptr, size);
+}
+
+template <typename C>
+auto MakeConstSpan(const C &c) -> decltype(MakeConstSpan(c.data(), c.size())) {
+  return MakeConstSpan(c.data(), c.size());
+}
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif  // OPENSSL_HEADER_SSL_SPAN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.grpc_back
new file mode 100644
index 0000000..1d732eb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/span.h.grpc_back	
@@ -0,0 +1,199 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_SSL_SPAN_H
+#define OPENSSL_HEADER_SSL_SPAN_H
+
+#include <openssl/base.h>
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+#include <algorithm>
+#include <cstdlib>
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+template <typename T>
+class Span;
+
+namespace internal {
+template <typename T>
+class SpanBase {
+  // Put comparison operator implementations into a base class with const T, so
+  // they can be used with any type that implicitly converts into a Span.
+  static_assert(std::is_const<T>::value,
+                "Span<T> must be derived from SpanBase<const T>");
+
+  friend bool operator==(Span<T> lhs, Span<T> rhs) {
+    // MSVC issues warning C4996 because std::equal is unsafe. The pragma to
+    // suppress the warning mysteriously has no effect, hence this
+    // implementation. See
+    // https://msdn.microsoft.com/en-us/library/aa985974.aspx.
+    if (lhs.size() != rhs.size()) {
+      return false;
+    }
+    for (T *l = lhs.begin(), *r = rhs.begin(); l != lhs.end() && r != rhs.end();
+         ++l, ++r) {
+      if (*l != *r) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  friend bool operator!=(Span<T> lhs, Span<T> rhs) { return !(lhs == rhs); }
+};
+}  // namespace internal
+
+// A Span<T> is a non-owning reference to a contiguous array of objects of type
+// |T|. Conceptually, a Span is a simple a pointer to |T| and a count of
+// elements accessible via that pointer. The elements referenced by the Span can
+// be mutated if |T| is mutable.
+//
+// A Span can be constructed from container types implementing |data()| and
+// |size()| methods. If |T| is constant, construction from a container type is
+// implicit. This allows writing methods that accept data from some unspecified
+// container type:
+//
+// // Foo views data referenced by v.
+// void Foo(bssl::Span<const uint8_t> v) { ... }
+//
+// std::vector<uint8_t> vec;
+// Foo(vec);
+//
+// For mutable Spans, conversion is explicit:
+//
+// // FooMutate mutates data referenced by v.
+// void FooMutate(bssl::Span<uint8_t> v) { ... }
+//
+// FooMutate(bssl::Span<uint8_t>(vec));
+//
+// You can also use the |MakeSpan| and |MakeConstSpan| factory methods to
+// construct Spans in order to deduce the type of the Span automatically.
+//
+// FooMutate(bssl::MakeSpan(vec));
+//
+// Note that Spans have value type sematics. They are cheap to construct and
+// copy, and should be passed by value whenever a method would otherwise accept
+// a reference or pointer to a container or array.
+template <typename T>
+class Span : private internal::SpanBase<const T> {
+ private:
+  // Heuristically test whether C is a container type that can be converted into
+  // a Span by checking for data() and size() member functions.
+  //
+  // TODO(davidben): Switch everything to std::enable_if_t when we remove
+  // support for MSVC 2015. Although we could write our own enable_if_t and MSVC
+  // 2015 has std::enable_if_t anyway, MSVC 2015's SFINAE implementation is
+  // problematic and does not work below unless we write the ::type at use.
+  template <typename C>
+  using EnableIfContainer = std::enable_if<
+      std::is_convertible<decltype(std::declval<C>().data()), T *>::value &&
+      std::is_integral<decltype(std::declval<C>().size())>::value>;
+
+  static const size_t npos = static_cast<size_t>(-1);
+
+ public:
+  constexpr Span() : Span(nullptr, 0) {}
+  constexpr Span(T *ptr, size_t len) : data_(ptr), size_(len) {}
+
+  template <size_t N>
+  constexpr Span(T (&array)[N]) : Span(array, N) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<std::is_const<T>::value, C>::type>
+  Span(const C &container) : data_(container.data()), size_(container.size()) {}
+
+  template <
+      typename C, typename = typename EnableIfContainer<C>::type,
+      typename = typename std::enable_if<!std::is_const<T>::value, C>::type>
+  explicit Span(C &container)
+      : data_(container.data()), size_(container.size()) {}
+
+  T *data() const { return data_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  T *begin() const { return data_; }
+  const T *cbegin() const { return data_; }
+  T *end() const { return data_ + size_; }
+  const T *cend() const { return end(); }
+
+  T &front() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[0];
+  }
+  T &back() const {
+    if (size_ == 0) {
+      abort();
+    }
+    return data_[size_ - 1];
+  }
+
+  T &operator[](size_t i) const {
+    if (i >= size_) {
+      abort();
+    }
+    return data_[i];
+  }
+  T &at(size_t i) const { return (*this)[i]; }
+
+  Span subspan(size_t pos = 0, size_t len = npos) const {
+    if (pos > size_) {
+      abort();  // absl::Span throws an exception here.
+    }
+    return Span(data_ + pos, std::min(size_ - pos, len));
+  }
+
+ private:
+  T *data_;
+  size_t size_;
+};
+
+template <typename T>
+const size_t Span<T>::npos;
+
+template <typename T>
+Span<T> MakeSpan(T *ptr, size_t size) {
+  return Span<T>(ptr, size);
+}
+
+template <typename C>
+auto MakeSpan(C &c) -> decltype(MakeSpan(c.data(), c.size())) {
+  return MakeSpan(c.data(), c.size());
+}
+
+template <typename T>
+Span<const T> MakeConstSpan(T *ptr, size_t size) {
+  return Span<const T>(ptr, size);
+}
+
+template <typename C>
+auto MakeConstSpan(const C &c) -> decltype(MakeConstSpan(c.data(), c.size())) {
+  return MakeConstSpan(c.data(), c.size());
+}
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif  // OPENSSL_HEADER_SSL_SPAN_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h
new file mode 100644
index 0000000..39f6a85
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "ssl.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.back
new file mode 100644
index 0000000..39f6a85
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "ssl.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.grpc_back
new file mode 100644
index 0000000..39f6a85
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/srtp.h.grpc_back	
@@ -0,0 +1,18 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
+
+#include "ssl.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h
new file mode 100644
index 0000000..ae570af
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h	
@@ -0,0 +1,5035 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_SSL_H
+#define OPENSSL_HEADER_SSL_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/span.h>
+#include <openssl_grpc/ssl3.h>
+#include <openssl_grpc/thread.h>
+#include <openssl_grpc/tls1.h>
+#include <openssl_grpc/x509.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <sys/time.h>
+#endif
+
+// NGINX needs this #include. Consider revisiting this after NGINX 1.14.0 has
+// been out for a year or so (assuming that they fix it in that release.) See
+// https://boringssl-review.googlesource.com/c/boringssl/+/21664.
+#include <openssl_grpc/hmac.h>
+
+// Forward-declare struct timeval. On Windows, it is defined in winsock2.h and
+// Windows headers define too many macros to be included in public headers.
+// However, only a forward declaration is needed.
+struct timeval;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SSL implementation.
+
+
+// SSL contexts.
+//
+// |SSL_CTX| objects manage shared state and configuration between multiple TLS
+// or DTLS connections. Whether the connections are TLS or DTLS is selected by
+// an |SSL_METHOD| on creation.
+//
+// |SSL_CTX| are reference-counted and may be shared by connections across
+// multiple threads. Once shared, functions which change the |SSL_CTX|'s
+// configuration may not be used.
+
+// TLS_method is the |SSL_METHOD| used for TLS connections.
+OPENSSL_EXPORT const SSL_METHOD *TLS_method(void);
+
+// DTLS_method is the |SSL_METHOD| used for DTLS connections.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_method(void);
+
+// TLS_with_buffers_method is like |TLS_method|, but avoids all use of
+// crypto/x509. All client connections created with |TLS_with_buffers_method|
+// will fail unless a certificate verifier is installed with
+// |SSL_set_custom_verify| or |SSL_CTX_set_custom_verify|.
+OPENSSL_EXPORT const SSL_METHOD *TLS_with_buffers_method(void);
+
+// DTLS_with_buffers_method is like |DTLS_method|, but avoids all use of
+// crypto/x509.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_with_buffers_method(void);
+
+// SSL_CTX_new returns a newly-allocated |SSL_CTX| with default settings or NULL
+// on error.
+OPENSSL_EXPORT SSL_CTX *SSL_CTX_new(const SSL_METHOD *method);
+
+// SSL_CTX_up_ref increments the reference count of |ctx|. It returns one.
+OPENSSL_EXPORT int SSL_CTX_up_ref(SSL_CTX *ctx);
+
+// SSL_CTX_free releases memory associated with |ctx|.
+OPENSSL_EXPORT void SSL_CTX_free(SSL_CTX *ctx);
+
+
+// SSL connections.
+//
+// An |SSL| object represents a single TLS or DTLS connection. Although the
+// shared |SSL_CTX| is thread-safe, an |SSL| is not thread-safe and may only be
+// used on one thread at a time.
+
+// SSL_new returns a newly-allocated |SSL| using |ctx| or NULL on error. The new
+// connection inherits settings from |ctx| at the time of creation. Settings may
+// also be individually configured on the connection.
+//
+// On creation, an |SSL| is not configured to be either a client or server. Call
+// |SSL_set_connect_state| or |SSL_set_accept_state| to set this.
+OPENSSL_EXPORT SSL *SSL_new(SSL_CTX *ctx);
+
+// SSL_free releases memory associated with |ssl|.
+OPENSSL_EXPORT void SSL_free(SSL *ssl);
+
+// SSL_get_SSL_CTX returns the |SSL_CTX| associated with |ssl|. If
+// |SSL_set_SSL_CTX| is called, it returns the new |SSL_CTX|, not the initial
+// one.
+OPENSSL_EXPORT SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
+
+// SSL_set_connect_state configures |ssl| to be a client.
+OPENSSL_EXPORT void SSL_set_connect_state(SSL *ssl);
+
+// SSL_set_accept_state configures |ssl| to be a server.
+OPENSSL_EXPORT void SSL_set_accept_state(SSL *ssl);
+
+// SSL_is_server returns one if |ssl| is configured as a server and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_is_server(const SSL *ssl);
+
+// SSL_is_dtls returns one if |ssl| is a DTLS connection and zero otherwise.
+OPENSSL_EXPORT int SSL_is_dtls(const SSL *ssl);
+
+// SSL_set_bio configures |ssl| to read from |rbio| and write to |wbio|. |ssl|
+// takes ownership of the two |BIO|s. If |rbio| and |wbio| are the same, |ssl|
+// only takes ownership of one reference.
+//
+// In DTLS, |rbio| must be non-blocking to properly handle timeouts and
+// retransmits.
+//
+// If |rbio| is the same as the currently configured |BIO| for reading, that
+// side is left untouched and is not freed.
+//
+// If |wbio| is the same as the currently configured |BIO| for writing AND |ssl|
+// is not currently configured to read from and write to the same |BIO|, that
+// side is left untouched and is not freed. This asymmetry is present for
+// historical reasons.
+//
+// Due to the very complex historical behavior of this function, calling this
+// function if |ssl| already has |BIO|s configured is deprecated. Prefer
+// |SSL_set0_rbio| and |SSL_set0_wbio| instead.
+OPENSSL_EXPORT void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio);
+
+// SSL_set0_rbio configures |ssl| to write to |rbio|. It takes ownership of
+// |rbio|.
+//
+// Note that, although this function and |SSL_set0_wbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_rbio(SSL *ssl, BIO *rbio);
+
+// SSL_set0_wbio configures |ssl| to write to |wbio|. It takes ownership of
+// |wbio|.
+//
+// Note that, although this function and |SSL_set0_rbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_wbio(SSL *ssl, BIO *wbio);
+
+// SSL_get_rbio returns the |BIO| that |ssl| reads from.
+OPENSSL_EXPORT BIO *SSL_get_rbio(const SSL *ssl);
+
+// SSL_get_wbio returns the |BIO| that |ssl| writes to.
+OPENSSL_EXPORT BIO *SSL_get_wbio(const SSL *ssl);
+
+// SSL_get_fd calls |SSL_get_rfd|.
+OPENSSL_EXPORT int SSL_get_fd(const SSL *ssl);
+
+// SSL_get_rfd returns the file descriptor that |ssl| is configured to read
+// from. If |ssl|'s read |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_rfd(const SSL *ssl);
+
+// SSL_get_wfd returns the file descriptor that |ssl| is configured to write
+// to. If |ssl|'s write |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_wfd(const SSL *ssl);
+
+// SSL_set_fd configures |ssl| to read from and write to |fd|. It returns one
+// on success and zero on allocation error. The caller retains ownership of
+// |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_fd(SSL *ssl, int fd);
+
+// SSL_set_rfd configures |ssl| to read from |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_rfd(SSL *ssl, int fd);
+
+// SSL_set_wfd configures |ssl| to write to |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_wfd(SSL *ssl, int fd);
+
+// SSL_do_handshake continues the current handshake. If there is none or the
+// handshake has completed or False Started, it returns one. Otherwise, it
+// returns <= 0. The caller should pass the value into |SSL_get_error| to
+// determine how to proceed.
+//
+// In DTLS, the caller must drive retransmissions. Whenever |SSL_get_error|
+// signals |SSL_ERROR_WANT_READ|, use |DTLSv1_get_timeout| to determine the
+// current timeout. If it expires before the next retry, call
+// |DTLSv1_handle_timeout|. Note that DTLS handshake retransmissions use fresh
+// sequence numbers, so it is not sufficient to replay packets at the transport.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_do_handshake(SSL *ssl);
+
+// SSL_connect configures |ssl| as a client, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_connect(SSL *ssl);
+
+// SSL_accept configures |ssl| as a server, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_accept(SSL *ssl);
+
+// SSL_read reads up to |num| bytes from |ssl| into |buf|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes read. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_read(SSL *ssl, void *buf, int num);
+
+// SSL_peek behaves like |SSL_read| but does not consume any bytes returned.
+OPENSSL_EXPORT int SSL_peek(SSL *ssl, void *buf, int num);
+
+// SSL_pending returns the number of bytes available in |ssl|. It does not read
+// from the transport.
+OPENSSL_EXPORT int SSL_pending(const SSL *ssl);
+
+// SSL_write writes up to |num| bytes from |buf| into |ssl|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes written. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// In TLS, a non-blocking |SSL_write| differs from non-blocking |write| in that
+// a failed |SSL_write| still commits to the data passed in. When retrying, the
+// caller must supply the original write buffer (or a larger one containing the
+// original as a prefix). By default, retries will fail if they also do not
+// reuse the same |buf| pointer. This may be relaxed with
+// |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER|, but the buffer contents still must be
+// unchanged.
+//
+// By default, in TLS, |SSL_write| will not return success until all |num| bytes
+// are written. This may be relaxed with |SSL_MODE_ENABLE_PARTIAL_WRITE|. It
+// allows |SSL_write| to complete with a partial result when only part of the
+// input was written in a single record.
+//
+// In DTLS, neither |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER| and
+// |SSL_MODE_ENABLE_PARTIAL_WRITE| do anything. The caller may retry with a
+// different buffer freely. A single call to |SSL_write| only ever writes a
+// single record in a single packet, so |num| must be at most
+// |SSL3_RT_MAX_PLAIN_LENGTH|.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_write(SSL *ssl, const void *buf, int num);
+
+// SSL_KEY_UPDATE_REQUESTED indicates that the peer should reply to a KeyUpdate
+// message with its own, thus updating traffic secrets for both directions on
+// the connection.
+#define SSL_KEY_UPDATE_REQUESTED 1
+
+// SSL_KEY_UPDATE_NOT_REQUESTED indicates that the peer should not reply with
+// it's own KeyUpdate message.
+#define SSL_KEY_UPDATE_NOT_REQUESTED 0
+
+// SSL_key_update queues a TLS 1.3 KeyUpdate message to be sent on |ssl|
+// if one is not already queued. The |request_type| argument must one of the
+// |SSL_KEY_UPDATE_*| values. This function requires that |ssl| have completed a
+// TLS >= 1.3 handshake. It returns one on success or zero on error.
+//
+// Note that this function does not _send_ the message itself. The next call to
+// |SSL_write| will cause the message to be sent. |SSL_write| may be called with
+// a zero length to flush a KeyUpdate message when no application data is
+// pending.
+OPENSSL_EXPORT int SSL_key_update(SSL *ssl, int request_type);
+
+// SSL_shutdown shuts down |ssl|. It runs in two stages. First, it sends
+// close_notify and returns zero or one on success or -1 on failure. Zero
+// indicates that close_notify was sent, but not received, and one additionally
+// indicates that the peer's close_notify had already been received.
+//
+// To then wait for the peer's close_notify, run |SSL_shutdown| to completion a
+// second time. This returns 1 on success and -1 on failure. Application data
+// is considered a fatal error at this point. To process or discard it, read
+// until close_notify with |SSL_read| instead.
+//
+// In both cases, on failure, pass the return value into |SSL_get_error| to
+// determine how to proceed.
+//
+// Most callers should stop at the first stage. Reading for close_notify is
+// primarily used for uncommon protocols where the underlying transport is
+// reused after TLS completes. Additionally, DTLS uses an unordered transport
+// and is unordered, so the second stage is a no-op in DTLS.
+OPENSSL_EXPORT int SSL_shutdown(SSL *ssl);
+
+// SSL_CTX_set_quiet_shutdown sets quiet shutdown on |ctx| to |mode|. If
+// enabled, |SSL_shutdown| will not send a close_notify alert or wait for one
+// from the peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ctx|.
+OPENSSL_EXPORT int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
+
+// SSL_set_quiet_shutdown sets quiet shutdown on |ssl| to |mode|. If enabled,
+// |SSL_shutdown| will not send a close_notify alert or wait for one from the
+// peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_set_quiet_shutdown(SSL *ssl, int mode);
+
+// SSL_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ssl|.
+OPENSSL_EXPORT int SSL_get_quiet_shutdown(const SSL *ssl);
+
+// SSL_get_error returns a |SSL_ERROR_*| value for the most recent operation on
+// |ssl|. It should be called after an operation failed to determine whether the
+// error was fatal and, if not, when to retry.
+OPENSSL_EXPORT int SSL_get_error(const SSL *ssl, int ret_code);
+
+// SSL_ERROR_NONE indicates the operation succeeded.
+#define SSL_ERROR_NONE 0
+
+// SSL_ERROR_SSL indicates the operation failed within the library. The caller
+// may inspect the error queue for more information.
+#define SSL_ERROR_SSL 1
+
+// SSL_ERROR_WANT_READ indicates the operation failed attempting to read from
+// the transport. The caller may retry the operation when the transport is ready
+// for reading.
+//
+// If signaled by a DTLS handshake, the caller must also call
+// |DTLSv1_get_timeout| and |DTLSv1_handle_timeout| as appropriate. See
+// |SSL_do_handshake|.
+#define SSL_ERROR_WANT_READ 2
+
+// SSL_ERROR_WANT_WRITE indicates the operation failed attempting to write to
+// the transport. The caller may retry the operation when the transport is ready
+// for writing.
+#define SSL_ERROR_WANT_WRITE 3
+
+// SSL_ERROR_WANT_X509_LOOKUP indicates the operation failed in calling the
+// |cert_cb| or |client_cert_cb|. The caller may retry the operation when the
+// callback is ready to return a certificate or one has been configured
+// externally.
+//
+// See also |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb|.
+#define SSL_ERROR_WANT_X509_LOOKUP 4
+
+// SSL_ERROR_SYSCALL indicates the operation failed externally to the library.
+// The caller should consult the system-specific error mechanism. This is
+// typically |errno| but may be something custom if using a custom |BIO|. It
+// may also be signaled if the transport returned EOF, in which case the
+// operation's return value will be zero.
+#define SSL_ERROR_SYSCALL 5
+
+// SSL_ERROR_ZERO_RETURN indicates the operation failed because the connection
+// was cleanly shut down with a close_notify alert.
+#define SSL_ERROR_ZERO_RETURN 6
+
+// SSL_ERROR_WANT_CONNECT indicates the operation failed attempting to connect
+// the transport (the |BIO| signaled |BIO_RR_CONNECT|). The caller may retry the
+// operation when the transport is ready.
+#define SSL_ERROR_WANT_CONNECT 7
+
+// SSL_ERROR_WANT_ACCEPT indicates the operation failed attempting to accept a
+// connection from the transport (the |BIO| signaled |BIO_RR_ACCEPT|). The
+// caller may retry the operation when the transport is ready.
+//
+// TODO(davidben): Remove this. It's used by accept BIOs which are bizarre.
+#define SSL_ERROR_WANT_ACCEPT 8
+
+// SSL_ERROR_WANT_CHANNEL_ID_LOOKUP indicates the operation failed looking up
+// the Channel ID key. The caller may retry the operation when |channel_id_cb|
+// is ready to return a key or one has been configured with
+// |SSL_set1_tls_channel_id|.
+//
+// See also |SSL_CTX_set_channel_id_cb|.
+#define SSL_ERROR_WANT_CHANNEL_ID_LOOKUP 9
+
+// SSL_ERROR_PENDING_SESSION indicates the operation failed because the session
+// lookup callback indicated the session was unavailable. The caller may retry
+// the operation when lookup has completed.
+//
+// See also |SSL_CTX_sess_set_get_cb| and |SSL_magic_pending_session_ptr|.
+#define SSL_ERROR_PENDING_SESSION 11
+
+// SSL_ERROR_PENDING_CERTIFICATE indicates the operation failed because the
+// early callback indicated certificate lookup was incomplete. The caller may
+// retry the operation when lookup has completed.
+//
+// See also |SSL_CTX_set_select_certificate_cb|.
+#define SSL_ERROR_PENDING_CERTIFICATE 12
+
+// SSL_ERROR_WANT_PRIVATE_KEY_OPERATION indicates the operation failed because
+// a private key operation was unfinished. The caller may retry the operation
+// when the private key operation is complete.
+//
+// See also |SSL_set_private_key_method| and
+// |SSL_CTX_set_private_key_method|.
+#define SSL_ERROR_WANT_PRIVATE_KEY_OPERATION 13
+
+// SSL_ERROR_PENDING_TICKET indicates that a ticket decryption is pending. The
+// caller may retry the operation when the decryption is ready.
+//
+// See also |SSL_CTX_set_ticket_aead_method|.
+#define SSL_ERROR_PENDING_TICKET 14
+
+// SSL_ERROR_EARLY_DATA_REJECTED indicates that early data was rejected. The
+// caller should treat this as a connection failure and retry any operations
+// associated with the rejected early data. |SSL_reset_early_data_reject| may be
+// used to reuse the underlying connection for the retry.
+#define SSL_ERROR_EARLY_DATA_REJECTED 15
+
+// SSL_ERROR_WANT_CERTIFICATE_VERIFY indicates the operation failed because
+// certificate verification was incomplete. The caller may retry the operation
+// when certificate verification is complete.
+//
+// See also |SSL_CTX_set_custom_verify|.
+#define SSL_ERROR_WANT_CERTIFICATE_VERIFY 16
+
+#define SSL_ERROR_HANDOFF 17
+#define SSL_ERROR_HANDBACK 18
+
+// SSL_ERROR_WANT_RENEGOTIATE indicates the operation is pending a response to
+// a renegotiation request from the server. The caller may call
+// |SSL_renegotiate| to schedule a renegotiation and retry the operation.
+//
+// See also |ssl_renegotiate_explicit|.
+#define SSL_ERROR_WANT_RENEGOTIATE 19
+
+// SSL_error_description returns a string representation of |err|, where |err|
+// is one of the |SSL_ERROR_*| constants returned by |SSL_get_error|, or NULL
+// if the value is unrecognized.
+OPENSSL_EXPORT const char *SSL_error_description(int err);
+
+// SSL_set_mtu sets the |ssl|'s MTU in DTLS to |mtu|. It returns one on success
+// and zero on failure.
+OPENSSL_EXPORT int SSL_set_mtu(SSL *ssl, unsigned mtu);
+
+// DTLSv1_set_initial_timeout_duration sets the initial duration for a DTLS
+// handshake timeout.
+//
+// This duration overrides the default of 1 second, which is the strong
+// recommendation of RFC 6347 (see section 4.2.4.1). However, there may exist
+// situations where a shorter timeout would be beneficial, such as for
+// time-sensitive applications.
+OPENSSL_EXPORT void DTLSv1_set_initial_timeout_duration(SSL *ssl,
+                                                        unsigned duration_ms);
+
+// DTLSv1_get_timeout queries the next DTLS handshake timeout. If there is a
+// timeout in progress, it sets |*out| to the time remaining and returns one.
+// Otherwise, it returns zero.
+//
+// When the timeout expires, call |DTLSv1_handle_timeout| to handle the
+// retransmit behavior.
+//
+// NOTE: This function must be queried again whenever the handshake state
+// machine changes, including when |DTLSv1_handle_timeout| is called.
+OPENSSL_EXPORT int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out);
+
+// DTLSv1_handle_timeout is called when a DTLS handshake timeout expires. If no
+// timeout had expired, it returns 0. Otherwise, it retransmits the previous
+// flight of handshake messages and returns 1. If too many timeouts had expired
+// without progress or an error occurs, it returns -1.
+//
+// The caller's external timer should be compatible with the one |ssl| queries
+// within some fudge factor. Otherwise, the call will be a no-op, but
+// |DTLSv1_get_timeout| will return an updated timeout.
+//
+// If the function returns -1, checking if |SSL_get_error| returns
+// |SSL_ERROR_WANT_WRITE| may be used to determine if the retransmit failed due
+// to a non-fatal error at the write |BIO|. However, the operation may not be
+// retried until the next timeout fires.
+//
+// WARNING: This function breaks the usual return value convention.
+//
+// TODO(davidben): This |SSL_ERROR_WANT_WRITE| behavior is kind of bizarre.
+OPENSSL_EXPORT int DTLSv1_handle_timeout(SSL *ssl);
+
+
+// Protocol versions.
+
+#define DTLS1_VERSION_MAJOR 0xfe
+#define SSL3_VERSION_MAJOR 0x03
+
+#define SSL3_VERSION 0x0300
+#define TLS1_VERSION 0x0301
+#define TLS1_1_VERSION 0x0302
+#define TLS1_2_VERSION 0x0303
+#define TLS1_3_VERSION 0x0304
+
+#define DTLS1_VERSION 0xfeff
+#define DTLS1_2_VERSION 0xfefd
+
+// SSL_CTX_set_min_proto_version sets the minimum protocol version for |ctx| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_min_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_set_max_proto_version sets the maximum protocol version for |ctx| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_max_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_get_min_proto_version returns the minimum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_min_proto_version(const SSL_CTX *ctx);
+
+// SSL_CTX_get_max_proto_version returns the maximum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_max_proto_version(const SSL_CTX *ctx);
+
+// SSL_set_min_proto_version sets the minimum protocol version for |ssl| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_min_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_set_max_proto_version sets the maximum protocol version for |ssl| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_max_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_get_min_proto_version returns the minimum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_min_proto_version(const SSL *ssl);
+
+// SSL_get_max_proto_version returns the maximum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_max_proto_version(const SSL *ssl);
+
+// SSL_version returns the TLS or DTLS protocol version used by |ssl|, which is
+// one of the |*_VERSION| values. (E.g. |TLS1_2_VERSION|.) Before the version
+// is negotiated, the result is undefined.
+OPENSSL_EXPORT int SSL_version(const SSL *ssl);
+
+
+// Options.
+//
+// Options configure protocol behavior.
+
+// SSL_OP_NO_QUERY_MTU, in DTLS, disables querying the MTU from the underlying
+// |BIO|. Instead, the MTU is configured with |SSL_set_mtu|.
+#define SSL_OP_NO_QUERY_MTU 0x00001000L
+
+// SSL_OP_NO_TICKET disables session ticket support (RFC 5077).
+#define SSL_OP_NO_TICKET 0x00004000L
+
+// SSL_OP_CIPHER_SERVER_PREFERENCE configures servers to select ciphers and
+// ECDHE curves according to the server's preferences instead of the
+// client's.
+#define SSL_OP_CIPHER_SERVER_PREFERENCE 0x00400000L
+
+// The following flags toggle individual protocol versions. This is deprecated.
+// Use |SSL_CTX_set_min_proto_version| and |SSL_CTX_set_max_proto_version|
+// instead.
+#define SSL_OP_NO_TLSv1 0x04000000L
+#define SSL_OP_NO_TLSv1_2 0x08000000L
+#define SSL_OP_NO_TLSv1_1 0x10000000L
+#define SSL_OP_NO_TLSv1_3 0x20000000L
+#define SSL_OP_NO_DTLSv1 SSL_OP_NO_TLSv1
+#define SSL_OP_NO_DTLSv1_2 SSL_OP_NO_TLSv1_2
+
+// SSL_CTX_set_options enables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_clear_options disables all options set in |options| (which should be
+// one or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_get_options returns a bitmask of |SSL_OP_*| values that represent all
+// the options enabled for |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_options(const SSL_CTX *ctx);
+
+// SSL_set_options enables all options set in |options| (which should be one or
+// more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_set_options(SSL *ssl, uint32_t options);
+
+// SSL_clear_options disables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_clear_options(SSL *ssl, uint32_t options);
+
+// SSL_get_options returns a bitmask of |SSL_OP_*| values that represent all the
+// options enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_options(const SSL *ssl);
+
+
+// Modes.
+//
+// Modes configure API behavior.
+
+// SSL_MODE_ENABLE_PARTIAL_WRITE, in TLS, allows |SSL_write| to complete with a
+// partial result when the only part of the input was written in a single
+// record. In DTLS, it does nothing.
+#define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001L
+
+// SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER, in TLS, allows retrying an incomplete
+// |SSL_write| with a different buffer. However, |SSL_write| still assumes the
+// buffer contents are unchanged. This is not the default to avoid the
+// misconception that non-blocking |SSL_write| behaves like non-blocking
+// |write|. In DTLS, it does nothing.
+#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
+
+// SSL_MODE_NO_AUTO_CHAIN disables automatically building a certificate chain
+// before sending certificates to the peer. This flag is set (and the feature
+// disabled) by default.
+// TODO(davidben): Remove this behavior. https://crbug.com/boringssl/42.
+#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
+
+// SSL_MODE_ENABLE_FALSE_START allows clients to send application data before
+// receipt of ChangeCipherSpec and Finished. This mode enables full handshakes
+// to 'complete' in one RTT. See RFC 7918.
+//
+// When False Start is enabled, |SSL_do_handshake| may succeed before the
+// handshake has completely finished. |SSL_write| will function at this point,
+// and |SSL_read| will transparently wait for the final handshake leg before
+// returning application data. To determine if False Start occurred or when the
+// handshake is completely finished, see |SSL_in_false_start|, |SSL_in_init|,
+// and |SSL_CB_HANDSHAKE_DONE| from |SSL_CTX_set_info_callback|.
+#define SSL_MODE_ENABLE_FALSE_START 0x00000080L
+
+// SSL_MODE_CBC_RECORD_SPLITTING causes multi-byte CBC records in TLS 1.0 to be
+// split in two: the first record will contain a single byte and the second will
+// contain the remainder. This effectively randomises the IV and prevents BEAST
+// attacks.
+#define SSL_MODE_CBC_RECORD_SPLITTING 0x00000100L
+
+// SSL_MODE_NO_SESSION_CREATION will cause any attempts to create a session to
+// fail with SSL_R_SESSION_MAY_NOT_BE_CREATED. This can be used to enforce that
+// session resumption is used for a given SSL*.
+#define SSL_MODE_NO_SESSION_CREATION 0x00000200L
+
+// SSL_MODE_SEND_FALLBACK_SCSV sends TLS_FALLBACK_SCSV in the ClientHello.
+// To be set only by applications that reconnect with a downgraded protocol
+// version; see RFC 7507 for details.
+//
+// DO NOT ENABLE THIS if your application attempts a normal handshake. Only use
+// this in explicit fallback retries, following the guidance in RFC 7507.
+#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000400L
+
+// SSL_CTX_set_mode enables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_clear_mode disables all modes set in |mode| (which should be one or
+// more of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_get_mode returns a bitmask of |SSL_MODE_*| values that represent all
+// the modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx);
+
+// SSL_set_mode enables all modes set in |mode| (which should be one or more of
+// the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_set_mode(SSL *ssl, uint32_t mode);
+
+// SSL_clear_mode disables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode);
+
+// SSL_get_mode returns a bitmask of |SSL_MODE_*| values that represent all the
+// modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_mode(const SSL *ssl);
+
+// SSL_CTX_set0_buffer_pool sets a |CRYPTO_BUFFER_POOL| that will be used to
+// store certificates. This can allow multiple connections to share
+// certificates and thus save memory.
+//
+// The SSL_CTX does not take ownership of |pool| and the caller must ensure
+// that |pool| outlives |ctx| and all objects linked to it, including |SSL|,
+// |X509| and |SSL_SESSION| objects. Basically, don't ever free |pool|.
+OPENSSL_EXPORT void SSL_CTX_set0_buffer_pool(SSL_CTX *ctx,
+                                             CRYPTO_BUFFER_POOL *pool);
+
+
+// Configuring certificates and private keys.
+//
+// These functions configure the connection's leaf certificate, private key, and
+// certificate chain. The certificate chain is ordered leaf to root (as sent on
+// the wire) but does not include the leaf. Both client and server certificates
+// use these functions.
+//
+// Certificates and keys may be configured before the handshake or dynamically
+// in the early callback and certificate callback.
+
+// SSL_CTX_use_certificate sets |ctx|'s leaf certificate to |x509|. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x509);
+
+// SSL_use_certificate sets |ssl|'s leaf certificate to |x509|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_use_certificate(SSL *ssl, X509 *x509);
+
+// SSL_CTX_use_PrivateKey sets |ctx|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
+
+// SSL_use_PrivateKey sets |ssl|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
+
+// SSL_CTX_set0_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_CTX_set1_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_set0_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_set1_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_CTX_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On
+// success, it returns one and takes ownership of |x509|. Otherwise, it returns
+// zero.
+OPENSSL_EXPORT int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_CTX_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It
+// returns one on success and zero on failure. The caller retains ownership of
+// |x509| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On success,
+// it returns one and takes ownership of |x509|. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_add0_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_extra_chain_cert calls |SSL_CTX_add0_chain_cert|.
+OPENSSL_EXPORT int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It returns
+// one on success and zero on failure. The caller retains ownership of |x509|
+// and may release it freely.
+OPENSSL_EXPORT int SSL_add1_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_clear_chain_certs clears |ctx|'s certificate chain and returns
+// one.
+OPENSSL_EXPORT int SSL_CTX_clear_chain_certs(SSL_CTX *ctx);
+
+// SSL_CTX_clear_extra_chain_certs calls |SSL_CTX_clear_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx);
+
+// SSL_clear_chain_certs clears |ssl|'s certificate chain and returns one.
+OPENSSL_EXPORT int SSL_clear_chain_certs(SSL *ssl);
+
+// SSL_CTX_set_cert_cb sets a callback that is called to select a certificate.
+// The callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_CTX_set_cert_cb(SSL_CTX *ctx,
+                                        int (*cb)(SSL *ssl, void *arg),
+                                        void *arg);
+
+// SSL_set_cert_cb sets a callback that is called to select a certificate. The
+// callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg),
+                                    void *arg);
+
+// SSL_get0_certificate_types, for a client, sets |*out_types| to an array
+// containing the client certificate types requested by a server. It returns the
+// length of the array. Note this list is always empty in TLS 1.3. The server
+// will instead send signature algorithms. See
+// |SSL_get0_peer_verify_algorithms|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t SSL_get0_certificate_types(const SSL *ssl,
+                                                 const uint8_t **out_types);
+
+// SSL_get0_peer_verify_algorithms sets |*out_sigalgs| to an array containing
+// the signature algorithms the peer is able to verify. It returns the length of
+// the array. Note these values are only sent starting TLS 1.2 and only
+// mandatory starting TLS 1.3. If not sent, the empty array is returned. For the
+// historical client certificate types list, see |SSL_get0_certificate_types|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t
+SSL_get0_peer_verify_algorithms(const SSL *ssl, const uint16_t **out_sigalgs);
+
+// SSL_certs_clear resets the private key, leaf certificate, and certificate
+// chain of |ssl|.
+OPENSSL_EXPORT void SSL_certs_clear(SSL *ssl);
+
+// SSL_CTX_check_private_key returns one if the certificate and private key
+// configured in |ctx| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_check_private_key(const SSL_CTX *ctx);
+
+// SSL_check_private_key returns one if the certificate and private key
+// configured in |ssl| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_check_private_key(const SSL *ssl);
+
+// SSL_CTX_get0_certificate returns |ctx|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
+
+// SSL_get_certificate returns |ssl|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_get_certificate(const SSL *ssl);
+
+// SSL_CTX_get0_privatekey returns |ctx|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
+
+// SSL_get_privatekey returns |ssl|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_get_privatekey(const SSL *ssl);
+
+// SSL_CTX_get0_chain_certs sets |*out_chain| to |ctx|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx,
+                                            STACK_OF(X509) **out_chain);
+
+// SSL_CTX_get_extra_chain_certs calls |SSL_CTX_get0_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
+                                                 STACK_OF(X509) **out_chain);
+
+// SSL_get0_chain_certs sets |*out_chain| to |ssl|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_get0_chain_certs(const SSL *ssl,
+                                        STACK_OF(X509) **out_chain);
+
+// SSL_CTX_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request it. The |list| argument must
+// contain one or more SCT structures serialised as a SignedCertificateTimestamp
+// List (see https://tools.ietf.org/html/rfc6962#section-3.3) – i.e. each SCT
+// is prefixed by a big-endian, uint16 length and the concatenation of one or
+// more such prefixed SCTs are themselves also prefixed by a uint16 length. It
+// returns one on success and zero on error. The caller retains ownership of
+// |list|.
+OPENSSL_EXPORT int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx,
+                                                          const uint8_t *list,
+                                                          size_t list_len);
+
+// SSL_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request is. The same format as the
+// one used for |SSL_CTX_set_signed_cert_timestamp_list| applies. The caller
+// retains ownership of |list|.
+OPENSSL_EXPORT int SSL_set_signed_cert_timestamp_list(SSL *ctx,
+                                                      const uint8_t *list,
+                                                      size_t list_len);
+
+// SSL_CTX_set_ocsp_response sets the OCSP response that is sent to clients
+// which request it. It returns one on success and zero on error. The caller
+// retains ownership of |response|.
+OPENSSL_EXPORT int SSL_CTX_set_ocsp_response(SSL_CTX *ctx,
+                                             const uint8_t *response,
+                                             size_t response_len);
+
+// SSL_set_ocsp_response sets the OCSP response that is sent to clients which
+// request it. It returns one on success and zero on error. The caller retains
+// ownership of |response|.
+OPENSSL_EXPORT int SSL_set_ocsp_response(SSL *ssl,
+                                         const uint8_t *response,
+                                         size_t response_len);
+
+// SSL_SIGN_* are signature algorithm values as defined in TLS 1.3.
+#define SSL_SIGN_RSA_PKCS1_SHA1 0x0201
+#define SSL_SIGN_RSA_PKCS1_SHA256 0x0401
+#define SSL_SIGN_RSA_PKCS1_SHA384 0x0501
+#define SSL_SIGN_RSA_PKCS1_SHA512 0x0601
+#define SSL_SIGN_ECDSA_SHA1 0x0203
+#define SSL_SIGN_ECDSA_SECP256R1_SHA256 0x0403
+#define SSL_SIGN_ECDSA_SECP384R1_SHA384 0x0503
+#define SSL_SIGN_ECDSA_SECP521R1_SHA512 0x0603
+#define SSL_SIGN_RSA_PSS_RSAE_SHA256 0x0804
+#define SSL_SIGN_RSA_PSS_RSAE_SHA384 0x0805
+#define SSL_SIGN_RSA_PSS_RSAE_SHA512 0x0806
+#define SSL_SIGN_ED25519 0x0807
+
+// SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal signature algorithm used to
+// specify raw RSASSA-PKCS1-v1_5 with an MD5/SHA-1 concatenation, as used in TLS
+// before TLS 1.2.
+#define SSL_SIGN_RSA_PKCS1_MD5_SHA1 0xff01
+
+// SSL_get_signature_algorithm_name returns a human-readable name for |sigalg|,
+// or NULL if unknown. If |include_curve| is one, the curve for ECDSA algorithms
+// is included as in TLS 1.3. Otherwise, it is excluded as in TLS 1.2.
+OPENSSL_EXPORT const char *SSL_get_signature_algorithm_name(uint16_t sigalg,
+                                                            int include_curve);
+
+// SSL_get_signature_algorithm_key_type returns the key type associated with
+// |sigalg| as an |EVP_PKEY_*| constant or |EVP_PKEY_NONE| if unknown.
+OPENSSL_EXPORT int SSL_get_signature_algorithm_key_type(uint16_t sigalg);
+
+// SSL_get_signature_algorithm_digest returns the digest function associated
+// with |sigalg| or |NULL| if |sigalg| has no prehash (Ed25519) or is unknown.
+OPENSSL_EXPORT const EVP_MD *SSL_get_signature_algorithm_digest(
+    uint16_t sigalg);
+
+// SSL_is_signature_algorithm_rsa_pss returns one if |sigalg| is an RSA-PSS
+// signature algorithm and zero otherwise.
+OPENSSL_EXPORT int SSL_is_signature_algorithm_rsa_pss(uint16_t sigalg);
+
+// SSL_CTX_set_signing_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when signing with |ctx|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_signing_algorithm_prefs(SSL_CTX *ctx,
+                                                       const uint16_t *prefs,
+                                                       size_t num_prefs);
+
+// SSL_set_signing_algorithm_prefs configures |ssl| to use |prefs| as the
+// preference list when signing with |ssl|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_set_signing_algorithm_prefs(SSL *ssl,
+                                                   const uint16_t *prefs,
+                                                   size_t num_prefs);
+
+
+// Certificate and private key convenience functions.
+
+// SSL_CTX_set_chain_and_key sets the certificate chain and private key for a
+// TLS client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_chain_and_key(
+    SSL_CTX *ctx, CRYPTO_BUFFER *const *certs, size_t num_certs,
+    EVP_PKEY *privkey, const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_set_chain_and_key sets the certificate chain and private key for a TLS
+// client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_chain_and_key(
+    SSL *ssl, CRYPTO_BUFFER *const *certs, size_t num_certs, EVP_PKEY *privkey,
+    const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_CTX_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
+
+// SSL_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
+
+// The following functions configure certificates or private keys but take as
+// input DER-encoded structures. They return one on success and zero on
+// failure.
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, size_t der_len,
+                                                const uint8_t *der);
+OPENSSL_EXPORT int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *der,
+                                            size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
+                                               const uint8_t *der,
+                                               size_t der_len);
+OPENSSL_EXPORT int SSL_use_PrivateKey_ASN1(int type, SSL *ssl,
+                                           const uint8_t *der, size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx,
+                                                  const uint8_t *der,
+                                                  size_t der_len);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der,
+                                              size_t der_len);
+
+// The following functions configure certificates or private keys but take as
+// input files to read from. They return one on success and zero on failure. The
+// |type| parameter is one of the |SSL_FILETYPE_*| values and determines whether
+// the file's contents are read as PEM or DER.
+
+#define SSL_FILETYPE_PEM 1
+#define SSL_FILETYPE_ASN1 2
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx,
+                                                  const char *file,
+                                                  int type);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file,
+                                              int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
+                                                int type);
+OPENSSL_EXPORT int SSL_use_certificate_file(SSL *ssl, const char *file,
+                                            int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
+                                               int type);
+OPENSSL_EXPORT int SSL_use_PrivateKey_file(SSL *ssl, const char *file,
+                                           int type);
+
+// SSL_CTX_use_certificate_chain_file configures certificates for |ctx|. It
+// reads the contents of |file| as a PEM-encoded leaf certificate followed
+// optionally by the certificate chain to send to the peer. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx,
+                                                      const char *file);
+
+// SSL_CTX_set_default_passwd_cb sets the password callback for PEM-based
+// convenience functions called on |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx,
+                                                  pem_password_cb *cb);
+
+// SSL_CTX_get_default_passwd_cb returns the callback set by
+// |SSL_CTX_set_default_passwd_cb|.
+OPENSSL_EXPORT pem_password_cb *SSL_CTX_get_default_passwd_cb(
+    const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_passwd_cb_userdata sets the userdata parameter for
+// |ctx|'s password callback.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,
+                                                           void *data);
+
+// SSL_CTX_get_default_passwd_cb_userdata returns the userdata parameter set by
+// |SSL_CTX_set_default_passwd_cb_userdata|.
+OPENSSL_EXPORT void *SSL_CTX_get_default_passwd_cb_userdata(const SSL_CTX *ctx);
+
+
+// Custom private keys.
+
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT {
+  ssl_private_key_success,
+  ssl_private_key_retry,
+  ssl_private_key_failure,
+};
+
+// ssl_private_key_method_st (aka |SSL_PRIVATE_KEY_METHOD|) describes private
+// key hooks. This is used to off-load signing operations to a custom,
+// potentially asynchronous, backend. Metadata about the key such as the type
+// and size are parsed out of the certificate.
+struct ssl_private_key_method_st {
+  // sign signs the message |in| in using the specified signature algorithm. On
+  // success, it returns |ssl_private_key_success| and writes at most |max_out|
+  // bytes of signature data to |out| and sets |*out_len| to the number of bytes
+  // written. On failure, it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. |sign| should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed. This will result in a call to |complete|.
+  //
+  // |signature_algorithm| is one of the |SSL_SIGN_*| values, as defined in TLS
+  // 1.3. Note that, in TLS 1.2, ECDSA algorithms do not require that curve
+  // sizes match hash sizes, so the curve portion of |SSL_SIGN_ECDSA_*| values
+  // must be ignored. BoringSSL will internally handle the curve matching logic
+  // where appropriate.
+  //
+  // It is an error to call |sign| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*sign)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out,
+                                        uint16_t signature_algorithm,
+                                        const uint8_t *in, size_t in_len);
+
+  // decrypt decrypts |in_len| bytes of encrypted data from |in|. On success it
+  // returns |ssl_private_key_success|, writes at most |max_out| bytes of
+  // decrypted data to |out| and sets |*out_len| to the actual number of bytes
+  // written. On failure it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. The caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in a call to |complete|. This
+  // function only works with RSA keys and should perform a raw RSA decryption
+  // operation with no padding.
+  //
+  // It is an error to call |decrypt| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*decrypt)(SSL *ssl, uint8_t *out,
+                                           size_t *out_len, size_t max_out,
+                                           const uint8_t *in, size_t in_len);
+
+  // complete completes a pending operation. If the operation has completed, it
+  // returns |ssl_private_key_success| and writes the result to |out| as in
+  // |sign|. Otherwise, it returns |ssl_private_key_failure| on failure and
+  // |ssl_private_key_retry| if the operation is still in progress.
+  //
+  // |complete| may be called arbitrarily many times before completion, but it
+  // is an error to call |complete| if there is no pending operation in progress
+  // on |ssl|.
+  enum ssl_private_key_result_t (*complete)(SSL *ssl, uint8_t *out,
+                                            size_t *out_len, size_t max_out);
+};
+
+// SSL_set_private_key_method configures a custom private key on |ssl|.
+// |key_method| must remain valid for the lifetime of |ssl|.
+OPENSSL_EXPORT void SSL_set_private_key_method(
+    SSL *ssl, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_CTX_set_private_key_method configures a custom private key on |ctx|.
+// |key_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_private_key_method(
+    SSL_CTX *ctx, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+
+// Cipher suites.
+//
+// |SSL_CIPHER| objects represent cipher suites.
+
+DEFINE_CONST_STACK_OF(SSL_CIPHER)
+
+// SSL_get_cipher_by_value returns the structure representing a TLS cipher
+// suite based on its assigned number, or NULL if unknown. See
+// https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value);
+
+// SSL_CIPHER_get_id returns |cipher|'s non-IANA id. This is not its
+// IANA-assigned number, which is called the "value" here, although it may be
+// cast to a |uint16_t| to get it.
+OPENSSL_EXPORT uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_value returns |cipher|'s IANA-assigned number.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_value(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_aead returns one if |cipher| uses an AEAD cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_aead(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_block_cipher returns one if |cipher| is a block cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_block_cipher(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_cipher_nid returns the NID for |cipher|'s bulk
+// cipher. Possible values are |NID_aes_128_gcm|, |NID_aes_256_gcm|,
+// |NID_chacha20_poly1305|, |NID_aes_128_cbc|, |NID_aes_256_cbc|, and
+// |NID_des_ede3_cbc|.
+OPENSSL_EXPORT int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_digest_nid returns the NID for |cipher|'s HMAC if it is a
+// legacy cipher suite. For modern AEAD-based ciphers (see
+// |SSL_CIPHER_is_aead|), it returns |NID_undef|.
+//
+// Note this function only returns the legacy HMAC digest, not the PRF hash.
+OPENSSL_EXPORT int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_nid returns the NID for |cipher|'s key exchange. This may
+// be |NID_kx_rsa|, |NID_kx_ecdhe|, or |NID_kx_psk| for TLS 1.2. In TLS 1.3,
+// cipher suites do not specify the key exchange, so this function returns
+// |NID_kx_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_auth_nid returns the NID for |cipher|'s authentication
+// type. This may be |NID_auth_rsa|, |NID_auth_ecdsa|, or |NID_auth_psk| for TLS
+// 1.2. In TLS 1.3, cipher suites do not specify authentication, so this
+// function returns |NID_auth_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_prf_nid retuns the NID for |cipher|'s PRF hash. If |cipher| is
+// a pre-TLS-1.2 cipher, it returns |NID_md5_sha1| but note these ciphers use
+// SHA-256 in TLS 1.2. Other return values may be treated uniformly in all
+// applicable versions.
+OPENSSL_EXPORT int SSL_CIPHER_get_prf_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_min_version returns the minimum protocol version required
+// for |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_min_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_max_version returns the maximum protocol version that
+// supports |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_max_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_standard_name returns the standard IETF name for |cipher|. For
+// example, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256".
+OPENSSL_EXPORT const char *SSL_CIPHER_standard_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_name returns the OpenSSL name of |cipher|. For example,
+// "ECDHE-RSA-AES128-GCM-SHA256". Callers are recommended to use
+// |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_name returns a string that describes the key-exchange
+// method used by |cipher|. For example, "ECDHE_ECDSA". TLS 1.3 AEAD-only
+// ciphers return the string "GENERIC".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_kx_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_bits returns the strength, in bits, of |cipher|. If
+// |out_alg_bits| is not NULL, it writes the number of bits consumed by the
+// symmetric algorithm to |*out_alg_bits|.
+OPENSSL_EXPORT int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher,
+                                       int *out_alg_bits);
+
+
+// Cipher suite configuration.
+//
+// OpenSSL uses a mini-language to configure cipher suites. The language
+// maintains an ordered list of enabled ciphers, along with an ordered list of
+// disabled but available ciphers. Initially, all ciphers are disabled with a
+// default ordering. The cipher string is then interpreted as a sequence of
+// directives, separated by colons, each of which modifies this state.
+//
+// Most directives consist of a one character or empty opcode followed by a
+// selector which matches a subset of available ciphers.
+//
+// Available opcodes are:
+//
+//   The empty opcode enables and appends all matching disabled ciphers to the
+//   end of the enabled list. The newly appended ciphers are ordered relative to
+//   each other matching their order in the disabled list.
+//
+//   |-| disables all matching enabled ciphers and prepends them to the disabled
+//   list, with relative order from the enabled list preserved. This means the
+//   most recently disabled ciphers get highest preference relative to other
+//   disabled ciphers if re-enabled.
+//
+//   |+| moves all matching enabled ciphers to the end of the enabled list, with
+//   relative order preserved.
+//
+//   |!| deletes all matching ciphers, enabled or not, from either list. Deleted
+//   ciphers will not matched by future operations.
+//
+// A selector may be a specific cipher (using either the standard or OpenSSL
+// name for the cipher) or one or more rules separated by |+|. The final
+// selector matches the intersection of each rule. For instance, |AESGCM+aECDSA|
+// matches ECDSA-authenticated AES-GCM ciphers.
+//
+// Available cipher rules are:
+//
+//   |ALL| matches all ciphers.
+//
+//   |kRSA|, |kDHE|, |kECDHE|, and |kPSK| match ciphers using plain RSA, DHE,
+//   ECDHE, and plain PSK key exchanges, respectively. Note that ECDHE_PSK is
+//   matched by |kECDHE| and not |kPSK|.
+//
+//   |aRSA|, |aECDSA|, and |aPSK| match ciphers authenticated by RSA, ECDSA, and
+//   a pre-shared key, respectively.
+//
+//   |RSA|, |DHE|, |ECDHE|, |PSK|, |ECDSA|, and |PSK| are aliases for the
+//   corresponding |k*| or |a*| cipher rule. |RSA| is an alias for |kRSA|, not
+//   |aRSA|.
+//
+//   |3DES|, |AES128|, |AES256|, |AES|, |AESGCM|, |CHACHA20| match ciphers
+//   whose bulk cipher use the corresponding encryption scheme. Note that
+//   |AES|, |AES128|, and |AES256| match both CBC and GCM ciphers.
+//
+//   |SHA1|, and its alias |SHA|, match legacy cipher suites using HMAC-SHA1.
+//
+// Although implemented, authentication-only ciphers match no rules and must be
+// explicitly selected by name.
+//
+// Deprecated cipher rules:
+//
+//   |kEDH|, |EDH|, |kEECDH|, and |EECDH| are legacy aliases for |kDHE|, |DHE|,
+//   |kECDHE|, and |ECDHE|, respectively.
+//
+//   |HIGH| is an alias for |ALL|.
+//
+//   |FIPS| is an alias for |HIGH|.
+//
+//   |SSLv3| and |TLSv1| match ciphers available in TLS 1.1 or earlier.
+//   |TLSv1_2| matches ciphers new in TLS 1.2. This is confusing and should not
+//   be used.
+//
+// Unknown rules are silently ignored by legacy APIs, and rejected by APIs with
+// "strict" in the name, which should be preferred. Cipher lists can be long
+// and it's easy to commit typos. Strict functions will also reject the use of
+// spaces, semi-colons and commas as alternative separators.
+//
+// The special |@STRENGTH| directive will sort all enabled ciphers by strength.
+//
+// The |DEFAULT| directive, when appearing at the front of the string, expands
+// to the default ordering of available ciphers.
+//
+// If configuring a server, one may also configure equal-preference groups to
+// partially respect the client's preferences when
+// |SSL_OP_CIPHER_SERVER_PREFERENCE| is enabled. Ciphers in an equal-preference
+// group have equal priority and use the client order. This may be used to
+// enforce that AEADs are preferred but select AES-GCM vs. ChaCha20-Poly1305
+// based on client preferences. An equal-preference is specified with square
+// brackets, combining multiple selectors separated by |. For example:
+//
+//   [TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256|TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256]
+//
+// Once an equal-preference group is used, future directives must be
+// opcode-less. Inside an equal-preference group, spaces are not allowed.
+//
+// TLS 1.3 ciphers do not participate in this mechanism and instead have a
+// built-in preference order. Functions to set cipher lists do not affect TLS
+// 1.3, and functions to query the cipher list do not include TLS 1.3
+// ciphers.
+
+// SSL_DEFAULT_CIPHER_LIST is the default cipher suite configuration. It is
+// substituted when a cipher string starts with 'DEFAULT'.
+#define SSL_DEFAULT_CIPHER_LIST "ALL"
+
+// SSL_CTX_set_strict_cipher_list configures the cipher list for |ctx|,
+// evaluating |str| as a cipher string and returning error if |str| contains
+// anything meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_strict_cipher_list(SSL_CTX *ctx,
+                                                  const char *str);
+
+// SSL_CTX_set_cipher_list configures the cipher list for |ctx|, evaluating
+// |str| as a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_CTX_set_strict_cipher_list|. This function tolerates
+// garbage inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set_strict_cipher_list configures the cipher list for |ssl|, evaluating
+// |str| as a cipher string and returning error if |str| contains anything
+// meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_set_strict_cipher_list(SSL *ssl, const char *str);
+
+// SSL_set_cipher_list configures the cipher list for |ssl|, evaluating |str| as
+// a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_set_strict_cipher_list|. This function tolerates garbage
+// inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_set_cipher_list(SSL *ssl, const char *str);
+
+// SSL_CTX_get_ciphers returns the cipher list for |ctx|, in order of
+// preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
+
+// SSL_CTX_cipher_in_group returns one if the |i|th cipher (see
+// |SSL_CTX_get_ciphers|) is in the same equipreference group as the one
+// following it and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_cipher_in_group(const SSL_CTX *ctx, size_t i);
+
+// SSL_get_ciphers returns the cipher list for |ssl|, in order of preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl);
+
+
+// Connection information.
+
+// SSL_is_init_finished returns one if |ssl| has completed its initial handshake
+// and has no pending handshake. It returns zero otherwise.
+OPENSSL_EXPORT int SSL_is_init_finished(const SSL *ssl);
+
+// SSL_in_init returns one if |ssl| has a pending handshake and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_in_init(const SSL *ssl);
+
+// SSL_in_false_start returns one if |ssl| has a pending handshake that is in
+// False Start. |SSL_write| may be called at this point without waiting for the
+// peer, but |SSL_read| will complete the handshake before accepting application
+// data.
+//
+// See also |SSL_MODE_ENABLE_FALSE_START|.
+OPENSSL_EXPORT int SSL_in_false_start(const SSL *ssl);
+
+// SSL_get_peer_certificate returns the peer's leaf certificate or NULL if the
+// peer did not use certificates. The caller must call |X509_free| on the
+// result to release it.
+OPENSSL_EXPORT X509 *SSL_get_peer_certificate(const SSL *ssl);
+
+// SSL_get_peer_cert_chain returns the peer's certificate chain or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// WARNING: This function behaves differently between client and server. If
+// |ssl| is a server, the returned chain does not include the leaf certificate.
+// If a client, it does.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);
+
+// SSL_get_peer_full_cert_chain returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the same as |SSL_get_peer_cert_chain| except that this function
+// always returns the full chain, i.e. the first element of the return value
+// (if any) will be the leaf certificate. In constrast,
+// |SSL_get_peer_cert_chain| returns only the intermediate certificates if the
+// |ssl| is a server.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl);
+
+// SSL_get0_peer_certificates returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the |CRYPTO_BUFFER| variant of |SSL_get_peer_full_cert_chain|.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_peer_certificates(const SSL *ssl);
+
+// SSL_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to point to
+// |*out_len| bytes of SCT information from the server. This is only valid if
+// |ssl| is a client. The SCT information is a SignedCertificateTimestampList
+// (including the two leading length bytes).
+// See https://tools.ietf.org/html/rfc6962#section-3.3
+// If no SCT was received then |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_signed_cert_timestamp_list(const SSL *ssl,
+                                                        const uint8_t **out,
+                                                        size_t *out_len);
+
+// SSL_get0_ocsp_response sets |*out| and |*out_len| to point to |*out_len|
+// bytes of an OCSP response from the server. This is the DER encoding of an
+// OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
+                                           size_t *out_len);
+
+// SSL_get_tls_unique writes at most |max_out| bytes of the tls-unique value
+// for |ssl| to |out| and sets |*out_len| to the number of bytes written. It
+// returns one on success or zero on error. In general |max_out| should be at
+// least 12.
+//
+// This function will always fail if the initial handshake has not completed.
+// The tls-unique value will change after a renegotiation but, since
+// renegotiations can be initiated by the server at any point, the higher-level
+// protocol must either leave them disabled or define states in which the
+// tls-unique value can be read.
+//
+// The tls-unique value is defined by
+// https://tools.ietf.org/html/rfc5929#section-3.1. Due to a weakness in the
+// TLS protocol, tls-unique is broken for resumed connections unless the
+// Extended Master Secret extension is negotiated. Thus this function will
+// return zero if |ssl| performed session resumption unless EMS was used when
+// negotiating the original session.
+OPENSSL_EXPORT int SSL_get_tls_unique(const SSL *ssl, uint8_t *out,
+                                      size_t *out_len, size_t max_out);
+
+// SSL_get_extms_support returns one if the Extended Master Secret extension or
+// TLS 1.3 was negotiated. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_extms_support(const SSL *ssl);
+
+// SSL_get_current_cipher returns cipher suite used by |ssl|, or NULL if it has
+// not been negotiated yet.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl);
+
+// SSL_session_reused returns one if |ssl| performed an abbreviated handshake
+// and zero otherwise.
+//
+// TODO(davidben): Hammer down the semantics of this API while a handshake,
+// initial or renego, is in progress.
+OPENSSL_EXPORT int SSL_session_reused(const SSL *ssl);
+
+// SSL_get_secure_renegotiation_support returns one if the peer supports secure
+// renegotiation (RFC 5746) or TLS 1.3. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_secure_renegotiation_support(const SSL *ssl);
+
+// SSL_export_keying_material exports a value derived from the master secret, as
+// specified in RFC 5705. It writes |out_len| bytes to |out| given a label and
+// optional context. (Since a zero length context is allowed, the |use_context|
+// flag controls whether a context is included.)
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int SSL_export_keying_material(
+    SSL *ssl, uint8_t *out, size_t out_len, const char *label, size_t label_len,
+    const uint8_t *context, size_t context_len, int use_context);
+
+
+// Sessions.
+//
+// An |SSL_SESSION| represents an SSL session that may be resumed in an
+// abbreviated handshake. It is reference-counted and immutable. Once
+// established, an |SSL_SESSION| may be shared by multiple |SSL| objects on
+// different threads and must not be modified.
+
+DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
+
+// SSL_SESSION_new returns a newly-allocated blank |SSL_SESSION| or NULL on
+// error. This may be useful when writing tests but should otherwise not be
+// used.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx);
+
+// SSL_SESSION_up_ref increments the reference count of |session| and returns
+// one.
+OPENSSL_EXPORT int SSL_SESSION_up_ref(SSL_SESSION *session);
+
+// SSL_SESSION_free decrements the reference count of |session|. If it reaches
+// zero, all data referenced by |session| and |session| itself are released.
+OPENSSL_EXPORT void SSL_SESSION_free(SSL_SESSION *session);
+
+// SSL_SESSION_to_bytes serializes |in| into a newly allocated buffer and sets
+// |*out_data| to that buffer and |*out_len| to its length. The caller takes
+// ownership of the buffer and must call |OPENSSL_free| when done. It returns
+// one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes(const SSL_SESSION *in,
+                                        uint8_t **out_data, size_t *out_len);
+
+// SSL_SESSION_to_bytes_for_ticket serializes |in|, but excludes the session
+// identification information, namely the session ID and ticket.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in,
+                                                   uint8_t **out_data,
+                                                   size_t *out_len);
+
+// SSL_SESSION_from_bytes parses |in_len| bytes from |in| as an SSL_SESSION. It
+// returns a newly-allocated |SSL_SESSION| on success or NULL on error.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_from_bytes(
+    const uint8_t *in, size_t in_len, const SSL_CTX *ctx);
+
+// SSL_SESSION_get_version returns a string describing the TLS or DTLS version
+// |session| was established at. For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_SESSION_get_version(const SSL_SESSION *session);
+
+// SSL_SESSION_get_protocol_version returns the TLS or DTLS version |session|
+// was established at.
+OPENSSL_EXPORT uint16_t
+SSL_SESSION_get_protocol_version(const SSL_SESSION *session);
+
+// SSL_SESSION_set_protocol_version sets |session|'s TLS or DTLS version to
+// |version|. This may be useful when writing tests but should otherwise not be
+// used. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_set_protocol_version(SSL_SESSION *session,
+                                                    uint16_t version);
+
+// SSL_MAX_SSL_SESSION_ID_LENGTH is the maximum length of an SSL session ID.
+#define SSL_MAX_SSL_SESSION_ID_LENGTH 32
+
+// SSL_SESSION_get_id returns a pointer to a buffer containing |session|'s
+// session ID and sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session,
+                                                 unsigned *out_len);
+
+// SSL_SESSION_set1_id sets |session|'s session ID to |sid|, It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id(SSL_SESSION *session, const uint8_t *sid,
+                                       size_t sid_len);
+
+// SSL_SESSION_get_time returns the time at which |session| was established in
+// seconds since the UNIX epoch.
+OPENSSL_EXPORT uint64_t SSL_SESSION_get_time(const SSL_SESSION *session);
+
+// SSL_SESSION_get_timeout returns the lifetime of |session| in seconds.
+OPENSSL_EXPORT uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer returns the peer leaf certificate stored in
+// |session|.
+//
+// TODO(davidben): This should return a const X509 *.
+OPENSSL_EXPORT X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_certificates returns the peer certificate chain stored
+// in |session|, or NULL if the peer did not use certificates. This is the
+// unverified list of certificates as sent by the peer, not the final chain
+// built during verification. The caller does not take ownership of the result.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_SESSION_get0_peer_certificates(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to
+// point to |*out_len| bytes of SCT information stored in |session|. This is
+// only valid for client sessions. The SCT information is a
+// SignedCertificateTimestampList (including the two leading length bytes). See
+// https://tools.ietf.org/html/rfc6962#section-3.3 If no SCT was received then
+// |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_signed_cert_timestamp_list(
+    const SSL_SESSION *session, const uint8_t **out, size_t *out_len);
+
+// SSL_SESSION_get0_ocsp_response sets |*out| and |*out_len| to point to
+// |*out_len| bytes of an OCSP response from the server. This is the DER
+// encoding of an OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ocsp_response(const SSL_SESSION *session,
+                                                   const uint8_t **out,
+                                                   size_t *out_len);
+
+// SSL_MAX_MASTER_KEY_LENGTH is the maximum length of a master secret.
+#define SSL_MAX_MASTER_KEY_LENGTH 48
+
+// SSL_SESSION_get_master_key writes up to |max_out| bytes of |session|'s master
+// secret to |out| and returns the number of bytes written. If |max_out| is
+// zero, it returns the size of the master secret.
+OPENSSL_EXPORT size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
+                                                 uint8_t *out, size_t max_out);
+
+// SSL_SESSION_set_time sets |session|'s creation time to |time| and returns
+// |time|. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint64_t SSL_SESSION_set_time(SSL_SESSION *session,
+                                             uint64_t time);
+
+// SSL_SESSION_set_timeout sets |session|'s timeout to |timeout| and returns
+// one. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session,
+                                                uint32_t timeout);
+
+// SSL_SESSION_get0_id_context returns a pointer to a buffer containing
+// |session|'s session ID context (see |SSL_CTX_set_session_id_context|) and
+// sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get0_id_context(
+    const SSL_SESSION *session, unsigned *out_len);
+
+// SSL_SESSION_set1_id_context sets |session|'s session ID context (see
+// |SSL_CTX_set_session_id_context|) to |sid_ctx|. It returns one on success and
+// zero on error. This function may be useful in writing tests but otherwise
+// should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id_context(SSL_SESSION *session,
+                                               const uint8_t *sid_ctx,
+                                               size_t sid_ctx_len);
+
+// SSL_SESSION_should_be_single_use returns one if |session| should be
+// single-use (TLS 1.3 and later) and zero otherwise.
+//
+// If this function returns one, clients retain multiple sessions and use each
+// only once. This prevents passive observers from correlating connections with
+// tickets. See RFC 8446, appendix C.4. If it returns zero, |session| cannot be
+// used without leaking a correlator.
+OPENSSL_EXPORT int SSL_SESSION_should_be_single_use(const SSL_SESSION *session);
+
+// SSL_SESSION_is_resumable returns one if |session| is resumable and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_is_resumable(const SSL_SESSION *session);
+
+// SSL_SESSION_has_ticket returns one if |session| has a ticket and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_has_ticket(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_ticket sets |*out_ticket| and |*out_len| to |session|'s
+// ticket, or NULL and zero if it does not have one. |out_ticket| may be NULL
+// if only the ticket length is needed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ticket(const SSL_SESSION *session,
+                                            const uint8_t **out_ticket,
+                                            size_t *out_len);
+
+// SSL_SESSION_set_ticket sets |session|'s ticket to |ticket|. It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set_ticket(SSL_SESSION *session,
+                                          const uint8_t *ticket,
+                                          size_t ticket_len);
+
+// SSL_SESSION_get_ticket_lifetime_hint returns ticket lifetime hint of
+// |session| in seconds or zero if none was set.
+OPENSSL_EXPORT uint32_t
+SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_cipher returns the cipher negotiated by the connection which
+// established |session|.
+//
+// Note that, in TLS 1.3, there is no guarantee that resumptions with |session|
+// will use that cipher. Prefer calling |SSL_get_current_cipher| on the |SSL|
+// instead.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_SESSION_get0_cipher(
+    const SSL_SESSION *session);
+
+// SSL_SESSION_has_peer_sha256 returns one if |session| has a SHA-256 hash of
+// the peer's certificate retained and zero if the peer did not present a
+// certificate or if this was not enabled when |session| was created. See also
+// |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT int SSL_SESSION_has_peer_sha256(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_sha256 sets |*out_ptr| and |*out_len| to the SHA-256
+// hash of the peer certificate retained in |session|, or NULL and zero if it
+// does not have one. See also |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT void SSL_SESSION_get0_peer_sha256(const SSL_SESSION *session,
+                                                 const uint8_t **out_ptr,
+                                                 size_t *out_len);
+
+
+// Session caching.
+//
+// Session caching allows connections to be established more efficiently based
+// on saved parameters from a previous connection, called a session (see
+// |SSL_SESSION|). The client offers a saved session, using an opaque identifier
+// from a previous connection. The server may accept the session, if it has the
+// parameters available. Otherwise, it will decline and continue with a full
+// handshake.
+//
+// This requires both the client and the server to retain session state. A
+// client does so with a stateful session cache. A server may do the same or, if
+// supported by both sides, statelessly using session tickets. For more
+// information on the latter, see the next section.
+//
+// For a server, the library implements a built-in internal session cache as an
+// in-memory hash table. Servers may also use |SSL_CTX_sess_set_get_cb| and
+// |SSL_CTX_sess_set_new_cb| to implement a custom external session cache. In
+// particular, this may be used to share a session cache between multiple
+// servers in a large deployment. An external cache may be used in addition to
+// or instead of the internal one. Use |SSL_CTX_set_session_cache_mode| to
+// toggle the internal cache.
+//
+// For a client, the only option is an external session cache. Clients may use
+// |SSL_CTX_sess_set_new_cb| to register a callback for when new sessions are
+// available. These may be cached and, in subsequent compatible connections,
+// configured with |SSL_set_session|.
+//
+// Note that offering or accepting a session short-circuits certificate
+// verification and most parameter negotiation. Resuming sessions across
+// different contexts may result in security failures and surprising
+// behavior. For a typical client, this means sessions for different hosts must
+// be cached under different keys. A client that connects to the same host with,
+// e.g., different cipher suite settings or client certificates should also use
+// separate session caches between those contexts. Servers should also partition
+// session caches between SNI hosts with |SSL_CTX_set_session_id_context|.
+//
+// Note also, in TLS 1.2 and earlier, offering sessions allows passive observers
+// to correlate different client connections. TLS 1.3 and later fix this,
+// provided clients use sessions at most once. Session caches are managed by the
+// caller in BoringSSL, so this must be implemented externally. See
+// |SSL_SESSION_should_be_single_use| for details.
+
+// SSL_SESS_CACHE_OFF disables all session caching.
+#define SSL_SESS_CACHE_OFF 0x0000
+
+// SSL_SESS_CACHE_CLIENT enables session caching for a client. The internal
+// cache is never used on a client, so this only enables the callbacks.
+#define SSL_SESS_CACHE_CLIENT 0x0001
+
+// SSL_SESS_CACHE_SERVER enables session caching for a server.
+#define SSL_SESS_CACHE_SERVER 0x0002
+
+// SSL_SESS_CACHE_BOTH enables session caching for both client and server.
+#define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_SERVER)
+
+// SSL_SESS_CACHE_NO_AUTO_CLEAR disables automatically calling
+// |SSL_CTX_flush_sessions| every 255 connections.
+#define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
+
+// SSL_SESS_CACHE_NO_INTERNAL_LOOKUP, on a server, disables looking up a session
+// from the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
+
+// SSL_SESS_CACHE_NO_INTERNAL_STORE, on a server, disables storing sessions in
+// the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
+
+// SSL_SESS_CACHE_NO_INTERNAL, on a server, disables the internal session
+// cache.
+#define SSL_SESS_CACHE_NO_INTERNAL \
+    (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP | SSL_SESS_CACHE_NO_INTERNAL_STORE)
+
+// SSL_CTX_set_session_cache_mode sets the session cache mode bits for |ctx| to
+// |mode|. It returns the previous value.
+OPENSSL_EXPORT int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_session_cache_mode returns the session cache mode bits for
+// |ctx|
+OPENSSL_EXPORT int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx);
+
+// SSL_set_session, for a client, configures |ssl| to offer to resume |session|
+// in the initial handshake and returns one. The caller retains ownership of
+// |session|. Note that configuring a session assumes the authentication in the
+// session is valid. For callers that wish to revalidate the session before
+// offering, see |SSL_SESSION_get0_peer_certificates|,
+// |SSL_SESSION_get0_signed_cert_timestamp_list|, and
+// |SSL_SESSION_get0_ocsp_response|.
+//
+// It is an error to call this function after the handshake has begun.
+OPENSSL_EXPORT int SSL_set_session(SSL *ssl, SSL_SESSION *session);
+
+// SSL_DEFAULT_SESSION_TIMEOUT is the default lifetime, in seconds, of a
+// session in TLS 1.2 or earlier. This is how long we are willing to use the
+// secret to encrypt traffic without fresh key material.
+#define SSL_DEFAULT_SESSION_TIMEOUT (2 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT is the default lifetime, in seconds, of a
+// session for TLS 1.3 psk_dhe_ke. This is how long we are willing to use the
+// secret as an authenticator.
+#define SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT (2 * 24 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_AUTH_TIMEOUT is the default non-renewable lifetime, in
+// seconds, of a TLS 1.3 session. This is how long we are willing to trust the
+// signature in the initial handshake.
+#define SSL_DEFAULT_SESSION_AUTH_TIMEOUT (7 * 24 * 60 * 60)
+
+// SSL_CTX_set_timeout sets the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout);
+
+// SSL_CTX_set_session_psk_dhe_timeout sets the lifetime, in seconds, of TLS 1.3
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx,
+                                                        uint32_t timeout);
+
+// SSL_CTX_get_timeout returns the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx);
+
+// SSL_MAX_SID_CTX_LENGTH is the maximum length of a session ID context.
+#define SSL_MAX_SID_CTX_LENGTH 32
+
+// SSL_CTX_set_session_id_context sets |ctx|'s session ID context to |sid_ctx|.
+// It returns one on success and zero on error. The session ID context is an
+// application-defined opaque byte string. A session will not be used in a
+// connection without a matching session ID context.
+//
+// For a server, if |SSL_VERIFY_PEER| is enabled, it is an error to not set a
+// session ID context.
+OPENSSL_EXPORT int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
+                                                  const uint8_t *sid_ctx,
+                                                  size_t sid_ctx_len);
+
+// SSL_set_session_id_context sets |ssl|'s session ID context to |sid_ctx|. It
+// returns one on success and zero on error. See also
+// |SSL_CTX_set_session_id_context|.
+OPENSSL_EXPORT int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
+                                              size_t sid_ctx_len);
+
+// SSL_get0_session_id_context returns a pointer to |ssl|'s session ID context
+// and sets |*out_len| to its length.  It returns NULL on error.
+OPENSSL_EXPORT const uint8_t *SSL_get0_session_id_context(const SSL *ssl,
+                                                          size_t *out_len);
+
+// SSL_SESSION_CACHE_MAX_SIZE_DEFAULT is the default maximum size of a session
+// cache.
+#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024 * 20)
+
+// SSL_CTX_sess_set_cache_size sets the maximum size of |ctx|'s internal session
+// cache to |size|. It returns the previous value.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx,
+                                                         unsigned long size);
+
+// SSL_CTX_sess_get_cache_size returns the maximum size of |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_number returns the number of sessions in |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT size_t SSL_CTX_sess_number(const SSL_CTX *ctx);
+
+// SSL_CTX_add_session inserts |session| into |ctx|'s internal session cache. It
+// returns one on success and zero on error or if |session| is already in the
+// cache. The caller retains its reference to |session|.
+OPENSSL_EXPORT int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_remove_session removes |session| from |ctx|'s internal session cache.
+// It returns one on success and zero if |session| was not in the cache.
+OPENSSL_EXPORT int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_flush_sessions removes all sessions from |ctx| which have expired as
+// of time |time|. If |time| is zero, all sessions are removed.
+OPENSSL_EXPORT void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time);
+
+// SSL_CTX_sess_set_new_cb sets the callback to be called when a new session is
+// established and ready to be cached. If the session cache is disabled (the
+// appropriate one of |SSL_SESS_CACHE_CLIENT| or |SSL_SESS_CACHE_SERVER| is
+// unset), the callback is not called.
+//
+// The callback is passed a reference to |session|. It returns one if it takes
+// ownership (and then calls |SSL_SESSION_free| when done) and zero otherwise. A
+// consumer which places |session| into an in-memory cache will likely return
+// one, with the cache calling |SSL_SESSION_free|. A consumer which serializes
+// |session| with |SSL_SESSION_to_bytes| may not need to retain |session| and
+// will likely return zero. Returning one is equivalent to calling
+// |SSL_SESSION_up_ref| and then returning zero.
+//
+// Note: For a client, the callback may be called on abbreviated handshakes if a
+// ticket is renewed. Further, it may not be called until some time after
+// |SSL_do_handshake| or |SSL_connect| completes if False Start is enabled. Thus
+// it's recommended to use this callback over calling |SSL_get_session| on
+// handshake completion.
+OPENSSL_EXPORT void SSL_CTX_sess_set_new_cb(
+    SSL_CTX *ctx, int (*new_session_cb)(SSL *ssl, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_new_cb returns the callback set by
+// |SSL_CTX_sess_set_new_cb|.
+OPENSSL_EXPORT int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(
+    SSL *ssl, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_remove_cb sets a callback which is called when a session is
+// removed from the internal session cache.
+//
+// TODO(davidben): What is the point of this callback? It seems useless since it
+// only fires on sessions in the internal cache.
+OPENSSL_EXPORT void SSL_CTX_sess_set_remove_cb(
+    SSL_CTX *ctx,
+    void (*remove_session_cb)(SSL_CTX *ctx, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_remove_cb returns the callback set by
+// |SSL_CTX_sess_set_remove_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(
+    SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_get_cb sets a callback to look up a session by ID for a
+// server. The callback is passed the session ID and should return a matching
+// |SSL_SESSION| or NULL if not found. It should set |*out_copy| to zero and
+// return a new reference to the session. This callback is not used for a
+// client.
+//
+// For historical reasons, if |*out_copy| is set to one (default), the SSL
+// library will take a new reference to the returned |SSL_SESSION|, expecting
+// the callback to return a non-owning pointer. This is not recommended. If
+// |ctx| and thus the callback is used on multiple threads, the session may be
+// removed and invalidated before the SSL library calls |SSL_SESSION_up_ref|,
+// whereas the callback may synchronize internally.
+//
+// To look up a session asynchronously, the callback may return
+// |SSL_magic_pending_session_ptr|. See the documentation for that function and
+// |SSL_ERROR_PENDING_SESSION|.
+//
+// If the internal session cache is enabled, the callback is only consulted if
+// the internal cache does not return a match.
+OPENSSL_EXPORT void SSL_CTX_sess_set_get_cb(
+    SSL_CTX *ctx, SSL_SESSION *(*get_session_cb)(SSL *ssl, const uint8_t *id,
+                                                 int id_len, int *out_copy));
+
+// SSL_CTX_sess_get_get_cb returns the callback set by
+// |SSL_CTX_sess_set_get_cb|.
+OPENSSL_EXPORT SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(
+    SSL *ssl, const uint8_t *id, int id_len, int *out_copy);
+
+// SSL_magic_pending_session_ptr returns a magic |SSL_SESSION|* which indicates
+// that the session isn't currently unavailable. |SSL_get_error| will then
+// return |SSL_ERROR_PENDING_SESSION| and the handshake can be retried later
+// when the lookup has completed.
+OPENSSL_EXPORT SSL_SESSION *SSL_magic_pending_session_ptr(void);
+
+
+// Session tickets.
+//
+// Session tickets, from RFC 5077, allow session resumption without server-side
+// state. The server maintains a secret ticket key and sends the client opaque
+// encrypted session parameters, called a ticket. When offering the session, the
+// client sends the ticket which the server decrypts to recover session state.
+// Session tickets are enabled by default but may be disabled with
+// |SSL_OP_NO_TICKET|.
+//
+// On the client, ticket-based sessions use the same APIs as ID-based tickets.
+// Callers do not need to handle them differently.
+//
+// On the server, tickets are encrypted and authenticated with a secret key.
+// By default, an |SSL_CTX| will manage session ticket encryption keys by
+// generating them internally and rotating every 48 hours. Tickets are minted
+// and processed transparently. The following functions may be used to configure
+// a persistent key or implement more custom behavior, including key rotation
+// and sharing keys between multiple servers in a large deployment. There are
+// three levels of customisation possible:
+//
+// 1) One can simply set the keys with |SSL_CTX_set_tlsext_ticket_keys|.
+// 2) One can configure an |EVP_CIPHER_CTX| and |HMAC_CTX| directly for
+//    encryption and authentication.
+// 3) One can configure an |SSL_TICKET_AEAD_METHOD| to have more control
+//    and the option of asynchronous decryption.
+//
+// An attacker that compromises a server's session ticket key can impersonate
+// the server and, prior to TLS 1.3, retroactively decrypt all application
+// traffic from sessions using that ticket key. Thus ticket keys must be
+// regularly rotated for forward secrecy. Note the default key is rotated
+// automatically once every 48 hours but manually configured keys are not.
+
+// SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL is the interval with which the
+// default session ticket encryption key is rotated, if in use. If any
+// non-default ticket encryption mechanism is configured, automatic rotation is
+// disabled.
+#define SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL (2 * 24 * 60 * 60)
+
+// SSL_CTX_get_tlsext_ticket_keys writes |ctx|'s session ticket key material to
+// |len| bytes of |out|. It returns one on success and zero if |len| is not
+// 48. If |out| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out,
+                                                  size_t len);
+
+// SSL_CTX_set_tlsext_ticket_keys sets |ctx|'s session ticket key material to
+// |len| bytes of |in|. It returns one on success and zero if |len| is not
+// 48. If |in| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in,
+                                                  size_t len);
+
+// SSL_TICKET_KEY_NAME_LEN is the length of the key name prefix of a session
+// ticket.
+#define SSL_TICKET_KEY_NAME_LEN 16
+
+// SSL_CTX_set_tlsext_ticket_key_cb sets the ticket callback to |callback| and
+// returns one. |callback| will be called when encrypting a new ticket and when
+// decrypting a ticket from the client.
+//
+// In both modes, |ctx| and |hmac_ctx| will already have been initialized with
+// |EVP_CIPHER_CTX_init| and |HMAC_CTX_init|, respectively. |callback|
+// configures |hmac_ctx| with an HMAC digest and key, and configures |ctx|
+// for encryption or decryption, based on the mode.
+//
+// When encrypting a new ticket, |encrypt| will be one. It writes a public
+// 16-byte key name to |key_name| and a fresh IV to |iv|. The output IV length
+// must match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns 1 on success and -1 on error.
+//
+// When decrypting a ticket, |encrypt| will be zero. |key_name| will point to a
+// 16-byte key name and |iv| points to an IV. The length of the IV consumed must
+// match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns -1 to abort the handshake, 0 if decrypting the ticket
+// failed, and 1 or 2 on success. If it returns 2, the ticket will be renewed.
+// This may be used to re-key the ticket.
+//
+// WARNING: |callback| wildly breaks the usual return value convention and is
+// called in two different modes.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_key_cb(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
+                                  EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
+                                  int encrypt));
+
+// ssl_ticket_aead_result_t enumerates the possible results from decrypting a
+// ticket with an |SSL_TICKET_AEAD_METHOD|.
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT {
+  // ssl_ticket_aead_success indicates that the ticket was successfully
+  // decrypted.
+  ssl_ticket_aead_success,
+  // ssl_ticket_aead_retry indicates that the operation could not be
+  // immediately completed and must be reattempted, via |open|, at a later
+  // point.
+  ssl_ticket_aead_retry,
+  // ssl_ticket_aead_ignore_ticket indicates that the ticket should be ignored
+  // (i.e. is corrupt or otherwise undecryptable).
+  ssl_ticket_aead_ignore_ticket,
+  // ssl_ticket_aead_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_ticket_aead_error,
+};
+
+// ssl_ticket_aead_method_st (aka |SSL_TICKET_AEAD_METHOD|) contains methods
+// for encrypting and decrypting session tickets.
+struct ssl_ticket_aead_method_st {
+  // max_overhead returns the maximum number of bytes of overhead that |seal|
+  // may add.
+  size_t (*max_overhead)(SSL *ssl);
+
+  // seal encrypts and authenticates |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes to |out|, and puts the number of bytes written in
+  // |*out_len|. The |in| and |out| buffers may be equal but will not otherwise
+  // alias. It returns one on success or zero on error.
+  int (*seal)(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out_len,
+              const uint8_t *in, size_t in_len);
+
+  // open authenticates and decrypts |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes of plaintext to |out|, and puts the number of bytes
+  // written in |*out_len|. The |in| and |out| buffers may be equal but will
+  // not otherwise alias. See |ssl_ticket_aead_result_t| for details of the
+  // return values. In the case that a retry is indicated, the caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in another call to |open|.
+  enum ssl_ticket_aead_result_t (*open)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out_len, const uint8_t *in,
+                                        size_t in_len);
+};
+
+// SSL_CTX_set_ticket_aead_method configures a custom ticket AEAD method table
+// on |ctx|. |aead_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_ticket_aead_method(
+    SSL_CTX *ctx, const SSL_TICKET_AEAD_METHOD *aead_method);
+
+
+// Elliptic curve Diffie-Hellman.
+//
+// Cipher suites using an ECDHE key exchange perform Diffie-Hellman over an
+// elliptic curve negotiated by both endpoints. See RFC 4492. Only named curves
+// are supported. ECDHE is always enabled, but the curve preferences may be
+// configured with these functions.
+//
+// Note that TLS 1.3 renames these from curves to groups. For consistency, we
+// currently use the TLS 1.2 name in the API.
+
+// SSL_CTX_set1_curves sets the preferred curves for |ctx| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves,
+                                       size_t curves_len);
+
+// SSL_set1_curves sets the preferred curves for |ssl| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_set1_curves(SSL *ssl, const int *curves,
+                                   size_t curves_len);
+
+// SSL_CTX_set1_curves_list sets the preferred curves for |ctx| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_CTX_set1_curves_list(SSL_CTX *ctx, const char *curves);
+
+// SSL_set1_curves_list sets the preferred curves for |ssl| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set1_curves_list(SSL *ssl, const char *curves);
+
+// SSL_CURVE_* define TLS curve IDs.
+#define SSL_CURVE_SECP224R1 21
+#define SSL_CURVE_SECP256R1 23
+#define SSL_CURVE_SECP384R1 24
+#define SSL_CURVE_SECP521R1 25
+#define SSL_CURVE_X25519 29
+#define SSL_CURVE_CECPQ2 16696
+
+// SSL_get_curve_id returns the ID of the curve used by |ssl|'s most recently
+// completed handshake or 0 if not applicable.
+//
+// TODO(davidben): This API currently does not work correctly if there is a
+// renegotiation in progress. Fix this.
+OPENSSL_EXPORT uint16_t SSL_get_curve_id(const SSL *ssl);
+
+// SSL_get_curve_name returns a human-readable name for the curve specified by
+// the given TLS curve id, or NULL if the curve is unknown.
+OPENSSL_EXPORT const char *SSL_get_curve_name(uint16_t curve_id);
+
+
+// Certificate verification.
+//
+// SSL may authenticate either endpoint with an X.509 certificate. Typically
+// this is used to authenticate the server to the client. These functions
+// configure certificate verification.
+//
+// WARNING: By default, certificate verification errors on a client are not
+// fatal. See |SSL_VERIFY_NONE| This may be configured with
+// |SSL_CTX_set_verify|.
+//
+// By default clients are anonymous but a server may request a certificate from
+// the client by setting |SSL_VERIFY_PEER|.
+//
+// Many of these functions use OpenSSL's legacy X.509 stack which is
+// underdocumented and deprecated, but the replacement isn't ready yet. For
+// now, consumers may use the existing stack or bypass it by performing
+// certificate verification externally. This may be done with
+// |SSL_CTX_set_cert_verify_callback| or by extracting the chain with
+// |SSL_get_peer_cert_chain| after the handshake. In the future, functions will
+// be added to use the SSL stack without dependency on any part of the legacy
+// X.509 and ASN.1 stack.
+//
+// To augment certificate verification, a client may also enable OCSP stapling
+// (RFC 6066) and Certificate Transparency (RFC 6962) extensions.
+
+// SSL_VERIFY_NONE, on a client, verifies the server certificate but does not
+// make errors fatal. The result may be checked with |SSL_get_verify_result|. On
+// a server it does not request a client certificate. This is the default.
+#define SSL_VERIFY_NONE 0x00
+
+// SSL_VERIFY_PEER, on a client, makes server certificate errors fatal. On a
+// server it requests a client certificate and makes errors fatal. However,
+// anonymous clients are still allowed. See
+// |SSL_VERIFY_FAIL_IF_NO_PEER_CERT|.
+#define SSL_VERIFY_PEER 0x01
+
+// SSL_VERIFY_FAIL_IF_NO_PEER_CERT configures a server to reject connections if
+// the client declines to send a certificate. This flag must be used together
+// with |SSL_VERIFY_PEER|, otherwise it won't work.
+#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
+
+// SSL_VERIFY_PEER_IF_NO_OBC configures a server to request a client certificate
+// if and only if Channel ID is not negotiated.
+#define SSL_VERIFY_PEER_IF_NO_OBC 0x04
+
+// SSL_CTX_set_verify configures certificate verification behavior. |mode| is
+// one of the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is
+// used to customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_verify(
+    SSL_CTX *ctx, int mode, int (*callback)(int ok, X509_STORE_CTX *store_ctx));
+
+// SSL_set_verify configures certificate verification behavior. |mode| is one of
+// the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is used to
+// customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_set_verify(SSL *ssl, int mode,
+                                   int (*callback)(int ok,
+                                                   X509_STORE_CTX *store_ctx));
+
+enum ssl_verify_result_t BORINGSSL_ENUM_INT {
+  ssl_verify_ok,
+  ssl_verify_invalid,
+  ssl_verify_retry,
+};
+
+// SSL_CTX_set_custom_verify configures certificate verification. |mode| is one
+// of the |SSL_VERIFY_*| values defined above. |callback| performs the
+// certificate verification.
+//
+// The callback may call |SSL_get0_peer_certificates| for the certificate chain
+// to validate. The callback should return |ssl_verify_ok| if the certificate is
+// valid. If the certificate is invalid, the callback should return
+// |ssl_verify_invalid| and optionally set |*out_alert| to an alert to send to
+// the peer. Some useful alerts include |SSL_AD_CERTIFICATE_EXPIRED|,
+// |SSL_AD_CERTIFICATE_REVOKED|, |SSL_AD_UNKNOWN_CA|, |SSL_AD_BAD_CERTIFICATE|,
+// |SSL_AD_CERTIFICATE_UNKNOWN|, and |SSL_AD_INTERNAL_ERROR|. See RFC 5246
+// section 7.2.2 for their precise meanings. If unspecified,
+// |SSL_AD_CERTIFICATE_UNKNOWN| will be sent by default.
+//
+// To verify a certificate asynchronously, the callback may return
+// |ssl_verify_retry|. The handshake will then pause with |SSL_get_error|
+// returning |SSL_ERROR_WANT_CERTIFICATE_VERIFY|.
+OPENSSL_EXPORT void SSL_CTX_set_custom_verify(
+    SSL_CTX *ctx, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_set_custom_verify behaves like |SSL_CTX_set_custom_verify| but configures
+// an individual |SSL|.
+OPENSSL_EXPORT void SSL_set_custom_verify(
+    SSL *ssl, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_CTX_get_verify_mode returns |ctx|'s verify mode, set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
+
+// SSL_get_verify_mode returns |ssl|'s verify mode, set by |SSL_CTX_set_verify|
+// or |SSL_set_verify|.  It returns -1 on error.
+OPENSSL_EXPORT int SSL_get_verify_mode(const SSL *ssl);
+
+// SSL_CTX_get_verify_callback returns the callback set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_get_verify_callback returns the callback set by |SSL_CTX_set_verify| or
+// |SSL_set_verify|.
+OPENSSL_EXPORT int (*SSL_get_verify_callback(const SSL *ssl))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_CTX_set_verify_depth sets the maximum depth of a certificate chain
+// accepted in verification. This number does not include the leaf, so a depth
+// of 1 allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
+
+// SSL_set_verify_depth sets the maximum depth of a certificate chain accepted
+// in verification. This number does not include the leaf, so a depth of 1
+// allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_set_verify_depth(SSL *ssl, int depth);
+
+// SSL_CTX_get_verify_depth returns the maximum depth of a certificate accepted
+// in verification.
+OPENSSL_EXPORT int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
+
+// SSL_get_verify_depth returns the maximum depth of a certificate accepted in
+// verification.
+OPENSSL_EXPORT int SSL_get_verify_depth(const SSL *ssl);
+
+// SSL_CTX_set1_param sets verification parameters from |param|. It returns one
+// on success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_CTX_set1_param(SSL_CTX *ctx,
+                                      const X509_VERIFY_PARAM *param);
+
+// SSL_set1_param sets verification parameters from |param|. It returns one on
+// success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_set1_param(SSL *ssl,
+                                  const X509_VERIFY_PARAM *param);
+
+// SSL_CTX_get0_param returns |ctx|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
+
+// SSL_get0_param returns |ssl|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
+
+// SSL_CTX_set_purpose sets |ctx|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
+
+// SSL_set_purpose sets |ssl|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_purpose(SSL *ssl, int purpose);
+
+// SSL_CTX_set_trust sets |ctx|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
+
+// SSL_set_trust sets |ssl|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_trust(SSL *ssl, int trust);
+
+// SSL_CTX_set_cert_store sets |ctx|'s certificate store to |store|. It takes
+// ownership of |store|. The store is used for certificate verification.
+//
+// The store is also used for the auto-chaining feature, but this is deprecated.
+// See also |SSL_MODE_NO_AUTO_CHAIN|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store);
+
+// SSL_CTX_get_cert_store returns |ctx|'s certificate store.
+OPENSSL_EXPORT X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_verify_paths loads the OpenSSL system-default trust
+// anchors into |ctx|'s store. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
+
+// SSL_CTX_load_verify_locations loads trust anchors into |ctx|'s store from
+// |ca_file| and |ca_dir|, either of which may be NULL. If |ca_file| is passed,
+// it is opened and PEM-encoded CA certificates are read. If |ca_dir| is passed,
+// it is treated as a directory in OpenSSL's hashed directory format. It returns
+// one on success and zero on failure.
+//
+// See
+// https://www.openssl.org/docs/manmaster/ssl/SSL_CTX_load_verify_locations.html
+// for documentation on the directory format.
+OPENSSL_EXPORT int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
+                                                 const char *ca_file,
+                                                 const char *ca_dir);
+
+// SSL_get_verify_result returns the result of certificate verification. It is
+// either |X509_V_OK| or a |X509_V_ERR_*| value.
+OPENSSL_EXPORT long SSL_get_verify_result(const SSL *ssl);
+
+// SSL_alert_from_verify_result returns the SSL alert code, such as
+// |SSL_AD_CERTIFICATE_EXPIRED|, that corresponds to an |X509_V_ERR_*| value.
+// The return value is always an alert, even when |result| is |X509_V_OK|.
+OPENSSL_EXPORT int SSL_alert_from_verify_result(long result);
+
+// SSL_get_ex_data_X509_STORE_CTX_idx returns the ex_data index used to look up
+// the |SSL| associated with an |X509_STORE_CTX| in the verify callback.
+OPENSSL_EXPORT int SSL_get_ex_data_X509_STORE_CTX_idx(void);
+
+// SSL_CTX_set_cert_verify_callback sets a custom callback to be called on
+// certificate verification rather than |X509_verify_cert|. |store_ctx| contains
+// the verification parameters. The callback should return one on success and
+// zero on fatal error. It may use |X509_STORE_CTX_set_error| to set a
+// verification result.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| to recover the
+// |SSL| object from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_verify_callback(
+    SSL_CTX *ctx, int (*callback)(X509_STORE_CTX *store_ctx, void *arg),
+    void *arg);
+
+// SSL_enable_signed_cert_timestamps causes |ssl| (which must be the client end
+// of a connection) to request SCTs from the server. See
+// https://tools.ietf.org/html/rfc6962.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_signed_cert_timestamps(SSL *ssl);
+
+// SSL_CTX_enable_signed_cert_timestamps enables SCT requests on all client SSL
+// objects created from |ctx|.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx);
+
+// SSL_enable_ocsp_stapling causes |ssl| (which must be the client end of a
+// connection) to request a stapled OCSP response from the server.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_ocsp_stapling(SSL *ssl);
+
+// SSL_CTX_enable_ocsp_stapling enables OCSP stapling on all client SSL objects
+// created from |ctx|.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx);
+
+// SSL_CTX_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL_CTX|.
+OPENSSL_EXPORT int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_CTX_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL|.
+OPENSSL_EXPORT int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_CTX_set_ed25519_enabled configures whether |ctx| advertises support for
+// the Ed25519 signature algorithm when using the default preference list. It is
+// disabled by default and may be enabled if the certificate verifier supports
+// Ed25519.
+OPENSSL_EXPORT void SSL_CTX_set_ed25519_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_CTX_set_verify_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when verifying signature's from the peer's long-term key. It
+// returns one on zero on error. |prefs| should not include the internal-only
+// value |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_verify_algorithm_prefs(SSL_CTX *ctx,
+                                                      const uint16_t *prefs,
+                                                      size_t num_prefs);
+
+
+// Client certificate CA list.
+//
+// When requesting a client certificate, a server may advertise a list of
+// certificate authorities which are accepted. These functions may be used to
+// configure this list.
+
+// SSL_set_client_CA_list sets |ssl|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set_client_CA_list(SSL *ssl,
+                                           STACK_OF(X509_NAME) *name_list);
+
+// SSL_CTX_set_client_CA_list sets |ctx|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,
+                                               STACK_OF(X509_NAME) *name_list);
+
+// SSL_set0_client_CAs sets |ssl|'s client certificate CA list to |name_list|,
+// which should contain DER-encoded distinguished names (RFC 5280). It takes
+// ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set0_client_CAs(SSL *ssl,
+                                        STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_CTX_set0_client_CAs sets |ctx|'s client certificate CA list to
+// |name_list|, which should contain DER-encoded distinguished names (RFC 5280).
+// It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set0_client_CAs(SSL_CTX *ctx,
+                                            STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_get_client_CA_list returns |ssl|'s client certificate CA list. If |ssl|
+// has not been configured as a client, this is the list configured by
+// |SSL_CTX_set_client_CA_list|.
+//
+// If configured as a client, it returns the client certificate CA list sent by
+// the server. In this mode, the behavior is undefined except during the
+// callbacks set by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or
+// when the handshake is paused because of them.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl);
+
+// SSL_get0_server_requested_CAs returns the CAs sent by a server to guide a
+// client in certificate selection. They are a series of DER-encoded X.509
+// names. This function may only be called during a callback set by
+// |SSL_CTX_set_cert_cb| or when the handshake is paused because of it.
+//
+// The returned stack is owned by |ssl|, as are its contents. It should not be
+// used past the point where the handshake is restarted after the callback.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_server_requested_CAs(const SSL *ssl);
+
+// SSL_CTX_get_client_CA_list returns |ctx|'s client certificate CA list.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *
+    SSL_CTX_get_client_CA_list(const SSL_CTX *ctx);
+
+// SSL_add_client_CA appends |x509|'s subject to the client certificate CA list.
+// It returns one on success or zero on error. The caller retains ownership of
+// |x509|.
+OPENSSL_EXPORT int SSL_add_client_CA(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_client_CA appends |x509|'s subject to the client certificate CA
+// list. It returns one on success or zero on error. The caller retains
+// ownership of |x509|.
+OPENSSL_EXPORT int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509);
+
+// SSL_load_client_CA_file opens |file| and reads PEM-encoded certificates from
+// it. It returns a newly-allocated stack of the certificate subjects or NULL
+// on error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
+
+// SSL_dup_CA_list makes a deep copy of |list|. It returns the new list on
+// success or NULL on allocation error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list);
+
+// SSL_add_file_cert_subjects_to_stack behaves like |SSL_load_client_CA_file|
+// but appends the result to |out|. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                       const char *file);
+
+
+// Server name indication.
+//
+// The server_name extension (RFC 3546) allows the client to advertise the name
+// of the server it is connecting to. This is used in virtual hosting
+// deployments to select one of a several certificates on a single IP. Only the
+// host_name name type is supported.
+
+#define TLSEXT_NAMETYPE_host_name 0
+
+// SSL_set_tlsext_host_name, for a client, configures |ssl| to advertise |name|
+// in the server_name extension. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_tlsext_host_name(SSL *ssl, const char *name);
+
+// SSL_get_servername, for a server, returns the hostname supplied by the
+// client or NULL if there was none. The |type| argument must be
+// |TLSEXT_NAMETYPE_host_name|.
+OPENSSL_EXPORT const char *SSL_get_servername(const SSL *ssl, const int type);
+
+// SSL_get_servername_type, for a server, returns |TLSEXT_NAMETYPE_host_name|
+// if the client sent a hostname and -1 otherwise.
+OPENSSL_EXPORT int SSL_get_servername_type(const SSL *ssl);
+
+// SSL_CTX_set_tlsext_servername_callback configures |callback| to be called on
+// the server after ClientHello extensions have been parsed and returns one.
+// The callback may use |SSL_get_servername| to examine the server_name
+// extension and returns a |SSL_TLSEXT_ERR_*| value. The value of |arg| may be
+// set by calling |SSL_CTX_set_tlsext_servername_arg|.
+//
+// If the callback returns |SSL_TLSEXT_ERR_NOACK|, the server_name extension is
+// not acknowledged in the ServerHello. If the return value is
+// |SSL_TLSEXT_ERR_ALERT_FATAL|, then |*out_alert| is the alert to send,
+// defaulting to |SSL_AD_UNRECOGNIZED_NAME|. |SSL_TLSEXT_ERR_ALERT_WARNING| is
+// ignored and treated as |SSL_TLSEXT_ERR_OK|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_callback(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg));
+
+// SSL_CTX_set_tlsext_servername_arg sets the argument to the servername
+// callback and returns one. See |SSL_CTX_set_tlsext_servername_callback|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_TLSEXT_ERR_* are values returned by some extension-related callbacks.
+#define SSL_TLSEXT_ERR_OK 0
+#define SSL_TLSEXT_ERR_ALERT_WARNING 1
+#define SSL_TLSEXT_ERR_ALERT_FATAL 2
+#define SSL_TLSEXT_ERR_NOACK 3
+
+// SSL_set_SSL_CTX changes |ssl|'s |SSL_CTX|. |ssl| will use the
+// certificate-related settings from |ctx|, and |SSL_get_SSL_CTX| will report
+// |ctx|. This function may be used during the callbacks registered by
+// |SSL_CTX_set_select_certificate_cb|,
+// |SSL_CTX_set_tlsext_servername_callback|, and |SSL_CTX_set_cert_cb| or when
+// the handshake is paused from them. It is typically used to switch
+// certificates based on SNI.
+//
+// Note the session cache and related settings will continue to use the initial
+// |SSL_CTX|. Callers should use |SSL_CTX_set_session_id_context| to partition
+// the session cache between different domains.
+//
+// TODO(davidben): Should other settings change after this call?
+OPENSSL_EXPORT SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
+
+
+// Application-layer protocol negotiation.
+//
+// The ALPN extension (RFC 7301) allows negotiating different application-layer
+// protocols over a single port. This is used, for example, to negotiate
+// HTTP/2.
+
+// SSL_CTX_set_alpn_protos sets the client ALPN protocol list on |ctx| to
+// |protos|. |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
+                                           unsigned protos_len);
+
+// SSL_set_alpn_protos sets the client ALPN protocol list on |ssl| to |protos|.
+// |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos,
+                                       unsigned protos_len);
+
+// SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
+// during ClientHello processing in order to select an ALPN protocol from the
+// client's list of offered protocols. Configuring this callback enables ALPN on
+// a server.
+//
+// The callback is passed a wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings) ALPN protocol list in |in|. It should set |*out| and
+// |*out_len| to the selected protocol and return |SSL_TLSEXT_ERR_OK| on
+// success. It does not pass ownership of the buffer. Otherwise, it should
+// return |SSL_TLSEXT_ERR_NOACK|. Other |SSL_TLSEXT_ERR_*| values are
+// unimplemented and will be treated as |SSL_TLSEXT_ERR_NOACK|.
+//
+// The cipher suite is selected before negotiating ALPN. The callback may use
+// |SSL_get_pending_cipher| to query the cipher suite.
+OPENSSL_EXPORT void SSL_CTX_set_alpn_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, const uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
+// On return it sets |*out_data| to point to |*out_len| bytes of protocol name
+// (not including the leading length-prefix byte). If the server didn't respond
+// with a negotiated protocol then |*out_len| will be zero.
+OPENSSL_EXPORT void SSL_get0_alpn_selected(const SSL *ssl,
+                                           const uint8_t **out_data,
+                                           unsigned *out_len);
+
+// SSL_CTX_set_allow_unknown_alpn_protos configures client connections on |ctx|
+// to allow unknown ALPN protocols from the server. Otherwise, by default, the
+// client will require that the protocol be advertised in
+// |SSL_CTX_set_alpn_protos|.
+OPENSSL_EXPORT void SSL_CTX_set_allow_unknown_alpn_protos(SSL_CTX *ctx,
+                                                          int enabled);
+
+
+// Certificate compression.
+//
+// Certificates in TLS 1.3 can be compressed[1]. BoringSSL supports this as both
+// a client and a server, but does not link against any specific compression
+// libraries in order to keep dependencies to a minimum. Instead, hooks for
+// compression and decompression can be installed in an |SSL_CTX| to enable
+// support.
+//
+// [1] https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03.
+
+// ssl_cert_compression_func_t is a pointer to a function that performs
+// compression. It must write the compressed representation of |in| to |out|,
+// returning one on success and zero on error. The results of compressing
+// certificates are not cached internally. Implementations may wish to implement
+// their own cache if they expect it to be useful given the certificates that
+// they serve.
+typedef int (*ssl_cert_compression_func_t)(SSL *ssl, CBB *out,
+                                           const uint8_t *in, size_t in_len);
+
+// ssl_cert_decompression_func_t is a pointer to a function that performs
+// decompression. The compressed data from the peer is passed as |in| and the
+// decompressed result must be exactly |uncompressed_len| bytes long. It returns
+// one on success, in which case |*out| must be set to the result of
+// decompressing |in|, or zero on error. Setting |*out| transfers ownership,
+// i.e. |CRYPTO_BUFFER_free| will be called on |*out| at some point in the
+// future. The results of decompressions are not cached internally.
+// Implementations may wish to implement their own cache if they expect it to be
+// useful.
+typedef int (*ssl_cert_decompression_func_t)(SSL *ssl, CRYPTO_BUFFER **out,
+                                             size_t uncompressed_len,
+                                             const uint8_t *in, size_t in_len);
+
+// SSL_CTX_add_cert_compression_alg registers a certificate compression
+// algorithm on |ctx| with ID |alg_id|. (The value of |alg_id| should be an IANA
+// assigned value and each can only be registered once.)
+//
+// One of the function pointers may be NULL to avoid having to implement both
+// sides of a compression algorithm if you're only going to use it in one
+// direction. In this case, the unimplemented direction acts like it was never
+// configured.
+//
+// For a server, algorithms are registered in preference order with the most
+// preferable first. It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_CTX_add_cert_compression_alg(
+    SSL_CTX *ctx, uint16_t alg_id, ssl_cert_compression_func_t compress,
+    ssl_cert_decompression_func_t decompress);
+
+
+// Next protocol negotiation.
+//
+// The NPN extension (draft-agl-tls-nextprotoneg-03) is the predecessor to ALPN
+// and deprecated in favor of it.
+
+// SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
+// TLS server needs a list of supported protocols for Next Protocol
+// Negotiation. The returned list must be in wire format. The list is returned
+// by setting |*out| to point to it and |*out_len| to its length. This memory
+// will not be modified, but one should assume that |ssl| keeps a reference to
+// it.
+//
+// The callback should return |SSL_TLSEXT_ERR_OK| if it wishes to advertise.
+// Otherwise, no such extension will be included in the ServerHello.
+OPENSSL_EXPORT void SSL_CTX_set_next_protos_advertised_cb(
+    SSL_CTX *ctx,
+    int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
+    void *arg);
+
+// SSL_CTX_set_next_proto_select_cb sets a callback that is called when a client
+// needs to select a protocol from the server's provided list. |*out| must be
+// set to point to the selected protocol (which may be within |in|). The length
+// of the protocol name must be written into |*out_len|. The server's advertised
+// protocols are provided in |in| and |in_len|. The callback can assume that
+// |in| is syntactically valid.
+//
+// The client must select a protocol. It is fatal to the connection if this
+// callback returns a value other than |SSL_TLSEXT_ERR_OK|.
+//
+// Configuring this callback enables NPN on a client.
+OPENSSL_EXPORT void SSL_CTX_set_next_proto_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_next_proto_negotiated sets |*out_data| and |*out_len| to point to
+// the client's requested protocol for this connection. If the client didn't
+// request any protocol, then |*out_data| is set to NULL.
+//
+// Note that the client can request any protocol it chooses. The value returned
+// from this function need not be a member of the list of supported protocols
+// provided by the server.
+OPENSSL_EXPORT void SSL_get0_next_proto_negotiated(const SSL *ssl,
+                                                   const uint8_t **out_data,
+                                                   unsigned *out_len);
+
+// SSL_select_next_proto implements the standard protocol selection. It is
+// expected that this function is called from the callback set by
+// |SSL_CTX_set_next_proto_select_cb|.
+//
+// |peer| and |supported| must be vectors of 8-bit, length-prefixed byte strings
+// containing the peer and locally-configured protocols, respectively. The
+// length byte itself is not included in the length. A byte string of length 0
+// is invalid. No byte string may be truncated. |supported| is assumed to be
+// non-empty.
+//
+// This function finds the first protocol in |peer| which is also in
+// |supported|. If one was found, it sets |*out| and |*out_len| to point to it
+// and returns |OPENSSL_NPN_NEGOTIATED|. Otherwise, it returns
+// |OPENSSL_NPN_NO_OVERLAP| and sets |*out| and |*out_len| to the first
+// supported protocol.
+OPENSSL_EXPORT int SSL_select_next_proto(uint8_t **out, uint8_t *out_len,
+                                         const uint8_t *peer, unsigned peer_len,
+                                         const uint8_t *supported,
+                                         unsigned supported_len);
+
+#define OPENSSL_NPN_UNSUPPORTED 0
+#define OPENSSL_NPN_NEGOTIATED 1
+#define OPENSSL_NPN_NO_OVERLAP 2
+
+
+// Channel ID.
+//
+// See draft-balfanz-tls-channelid-01.
+
+// SSL_CTX_set_tls_channel_id_enabled configures whether connections associated
+// with |ctx| should enable Channel ID.
+OPENSSL_EXPORT void SSL_CTX_set_tls_channel_id_enabled(SSL_CTX *ctx,
+                                                       int enabled);
+
+// SSL_set_tls_channel_id_enabled configures whether |ssl| should enable Channel
+// ID.
+OPENSSL_EXPORT void SSL_set_tls_channel_id_enabled(SSL *ssl, int enabled);
+
+// SSL_CTX_set1_tls_channel_id configures a TLS client to send a TLS Channel ID
+// to compatible servers. |private_key| must be a P-256 EC key. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx,
+                                               EVP_PKEY *private_key);
+
+// SSL_set1_tls_channel_id configures a TLS client to send a TLS Channel ID to
+// compatible servers. |private_key| must be a P-256 EC key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key);
+
+// SSL_get_tls_channel_id gets the client's TLS Channel ID from a server |SSL*|
+// and copies up to the first |max_out| bytes into |out|. The Channel ID
+// consists of the client's P-256 public key as an (x,y) pair where each is a
+// 32-byte, big-endian field element. It returns 0 if the client didn't offer a
+// Channel ID and the length of the complete Channel ID otherwise.
+OPENSSL_EXPORT size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out,
+                                             size_t max_out);
+
+// SSL_CTX_set_channel_id_cb sets a callback to be called when a TLS Channel ID
+// is requested. The callback may set |*out_pkey| to a key, passing a reference
+// to the caller. If none is returned, the handshake will pause and
+// |SSL_get_error| will return |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+//
+// See also |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+OPENSSL_EXPORT void SSL_CTX_set_channel_id_cb(
+    SSL_CTX *ctx, void (*channel_id_cb)(SSL *ssl, EVP_PKEY **out_pkey));
+
+// SSL_CTX_get_channel_id_cb returns the callback set by
+// |SSL_CTX_set_channel_id_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(
+    SSL *ssl, EVP_PKEY **out_pkey);
+
+
+// Token Binding.
+//
+// See draft-ietf-tokbind-protocol-16.
+
+// SSL_set_token_binding_params sets |params| as the Token Binding Key
+// parameters (section 3 of draft-ietf-tokbind-protocol-16) to negotiate on the
+// connection. If this function is not called, or if |len| is 0, then this
+// endpoint will not attempt to negotiate Token Binding. |params| are provided
+// in preference order, with the more preferred parameters at the beginning of
+// the list. This function returns 1 on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_token_binding_params(SSL *ssl, const uint8_t *params,
+                                                size_t len);
+
+// SSL_is_token_binding_negotiated returns 1 if Token Binding was negotiated
+// on this connection and 0 otherwise. On a server, it is possible for this
+// function to return 1 when the client's view of the connection is that Token
+// Binding was not negotiated. This occurs when the server indicates a version
+// of Token Binding less than the client's minimum version.
+OPENSSL_EXPORT int SSL_is_token_binding_negotiated(const SSL *ssl);
+
+// SSL_get_negotiated_token_binding_param returns the TokenBindingKeyParameters
+// enum value that was negotiated. It is only valid to call this function if
+// SSL_is_token_binding_negotiated returned 1, otherwise this function returns
+// an undefined value.
+OPENSSL_EXPORT uint8_t SSL_get_negotiated_token_binding_param(const SSL *ssl);
+
+
+// DTLS-SRTP.
+//
+// See RFC 5764.
+
+// srtp_protection_profile_st (aka |SRTP_PROTECTION_PROFILE|) is an SRTP
+// profile for use with the use_srtp extension.
+struct srtp_protection_profile_st {
+  const char *name;
+  unsigned long id;
+} /* SRTP_PROTECTION_PROFILE */;
+
+DEFINE_CONST_STACK_OF(SRTP_PROTECTION_PROFILE)
+
+// SRTP_* define constants for SRTP profiles.
+#define SRTP_AES128_CM_SHA1_80 0x0001
+#define SRTP_AES128_CM_SHA1_32 0x0002
+#define SRTP_AES128_F8_SHA1_80 0x0003
+#define SRTP_AES128_F8_SHA1_32 0x0004
+#define SRTP_NULL_SHA1_80      0x0005
+#define SRTP_NULL_SHA1_32      0x0006
+#define SRTP_AEAD_AES_128_GCM  0x0007
+#define SRTP_AEAD_AES_256_GCM  0x0008
+
+// SSL_CTX_set_srtp_profiles enables SRTP for all SSL objects created from
+// |ctx|. |profile| contains a colon-separated list of profile names. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx,
+                                             const char *profiles);
+
+// SSL_set_srtp_profiles enables SRTP for |ssl|.  |profile| contains a
+// colon-separated list of profile names. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set_srtp_profiles(SSL *ssl, const char *profiles);
+
+// SSL_get_srtp_profiles returns the SRTP profiles supported by |ssl|.
+OPENSSL_EXPORT STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(
+    SSL *ssl);
+
+// SSL_get_selected_srtp_profile returns the selected SRTP profile, or NULL if
+// SRTP was not negotiated.
+OPENSSL_EXPORT const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(
+    SSL *ssl);
+
+
+// Pre-shared keys.
+//
+// Connections may be configured with PSK (Pre-Shared Key) cipher suites. These
+// authenticate using out-of-band pre-shared keys rather than certificates. See
+// RFC 4279.
+//
+// This implementation uses NUL-terminated C strings for identities and identity
+// hints, so values with a NUL character are not supported. (RFC 4279 does not
+// specify the format of an identity.)
+
+// PSK_MAX_IDENTITY_LEN is the maximum supported length of a PSK identity,
+// excluding the NUL terminator.
+#define PSK_MAX_IDENTITY_LEN 128
+
+// PSK_MAX_PSK_LEN is the maximum supported length of a pre-shared key.
+#define PSK_MAX_PSK_LEN 256
+
+// SSL_CTX_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client.
+//
+// The callback is passed the identity hint in |hint| or NULL if none was
+// provided. It should select a PSK identity and write the identity and the
+// corresponding PSK to |identity| and |psk|, respectively. The identity is
+// written as a NUL-terminated C string of length (excluding the NUL terminator)
+// at most |max_identity_len|. The PSK's length must be at most |max_psk_len|.
+// The callback returns the length of the PSK or 0 if no suitable identity was
+// found.
+OPENSSL_EXPORT void SSL_CTX_set_psk_client_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                                 unsigned max_identity_len, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client. See also |SSL_CTX_set_psk_client_callback|.
+OPENSSL_EXPORT void SSL_set_psk_client_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                             unsigned max_identity_len, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server.
+//
+// The callback is passed the identity in |identity|. It should write a PSK of
+// length at most |max_psk_len| to |psk| and return the number of bytes written
+// or zero if the PSK identity is unknown.
+OPENSSL_EXPORT void SSL_CTX_set_psk_server_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server. See also |SSL_CTX_set_psk_server_callback|.
+OPENSSL_EXPORT void SSL_set_psk_server_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx,
+                                                 const char *identity_hint);
+
+// SSL_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_use_psk_identity_hint(SSL *ssl,
+                                             const char *identity_hint);
+
+// SSL_get_psk_identity_hint returns the PSK identity hint advertised for |ssl|
+// or NULL if there is none.
+OPENSSL_EXPORT const char *SSL_get_psk_identity_hint(const SSL *ssl);
+
+// SSL_get_psk_identity, after the handshake completes, returns the PSK identity
+// that was negotiated by |ssl| or NULL if PSK was not used.
+OPENSSL_EXPORT const char *SSL_get_psk_identity(const SSL *ssl);
+
+
+// QUIC transport parameters.
+//
+// draft-ietf-quic-tls defines a new TLS extension quic_transport_parameters
+// used by QUIC for each endpoint to unilaterally declare its supported
+// transport parameters. draft-ietf-quic-transport (section 7.4) defines the
+// contents of that extension (a TransportParameters struct) and describes how
+// to handle it and its semantic meaning.
+//
+// BoringSSL handles this extension as an opaque byte string. The caller is
+// responsible for serializing and parsing it.
+
+// SSL_set_quic_transport_params configures |ssl| to send |params| (of length
+// |params_len|) in the quic_transport_parameters extension in either the
+// ClientHello or EncryptedExtensions handshake message. This extension will
+// only be sent if the TLS version is at least 1.3, and for a server, only if
+// the client sent the extension. The buffer pointed to by |params| only need be
+// valid for the duration of the call to this function. This function returns 1
+// on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_quic_transport_params(SSL *ssl,
+                                                 const uint8_t *params,
+                                                 size_t params_len);
+
+// SSL_get_peer_quic_transport_params provides the caller with the value of the
+// quic_transport_parameters extension sent by the peer. A pointer to the buffer
+// containing the TransportParameters will be put in |*out_params|, and its
+// length in |*params_len|. This buffer will be valid for the lifetime of the
+// |SSL|. If no params were received from the peer, |*out_params_len| will be 0.
+OPENSSL_EXPORT void SSL_get_peer_quic_transport_params(const SSL *ssl,
+                                                       const uint8_t **out_params,
+                                                       size_t *out_params_len);
+
+
+// Delegated credentials.
+//
+// *** EXPERIMENTAL — PRONE TO CHANGE ***
+//
+// draft-ietf-tls-subcerts is a proposed extension for TLS 1.3 and above that
+// allows an end point to use its certificate to delegate credentials for
+// authentication. If the peer indicates support for this extension, then this
+// host may use a delegated credential to sign the handshake. Once issued,
+// credentials can't be revoked. In order to mitigate the damage in case the
+// credential secret key is compromised, the credential is only valid for a
+// short time (days, hours, or even minutes). This library implements draft-03
+// of the protocol spec.
+//
+// The extension ID has not been assigned; we're using 0xff02 for the time
+// being. Currently only the server side is implemented.
+//
+// Servers configure a DC for use in the handshake via
+// |SSL_set1_delegated_credential|. It must be signed by the host's end-entity
+// certificate as defined in draft-ietf-tls-subcerts-03.
+
+// SSL_set1_delegated_credential configures the delegated credential (DC) that
+// will be sent to the peer for the current connection. |dc| is the DC in wire
+// format, and |pkey| or |key_method| is the corresponding private key.
+// Currently (as of draft-03), only servers may configure a DC to use in the
+// handshake.
+//
+// The DC will only be used if the protocol version is correct and the signature
+// scheme is supported by the peer. If not, the DC will not be negotiated and
+// the handshake will use the private key (or private key method) associated
+// with the certificate.
+OPENSSL_EXPORT int SSL_set1_delegated_credential(
+    SSL *ssl, CRYPTO_BUFFER *dc, EVP_PKEY *pkey,
+    const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_delegated_credential_used returns one if a delegated credential was used
+// and zero otherwise.
+OPENSSL_EXPORT int SSL_delegated_credential_used(const SSL *ssl);
+
+
+// QUIC integration.
+//
+// QUIC acts as an underlying transport for the TLS 1.3 handshake. The following
+// functions allow a QUIC implementation to serve as the underlying transport as
+// described in draft-ietf-quic-tls.
+//
+// When configured for QUIC, |SSL_do_handshake| will drive the handshake as
+// before, but it will not use the configured |BIO|. It will call functions on
+// |SSL_QUIC_METHOD| to configure secrets and send data. If data is needed from
+// the peer, it will return |SSL_ERROR_WANT_READ|. When received, the caller
+// should call |SSL_provide_quic_data| and then |SSL_do_handshake| to continue
+// the handshake. After the handshake is complete, the caller should call
+// |SSL_provide_quic_data| for any post-handshake data, followed by
+// |SSL_process_quic_post_handshake| to process it. It is an error to call
+// |SSL_read| and |SSL_write| in QUIC.
+//
+// 0-RTT behaves similarly to |TLS_method|'s usual behavior. |SSL_do_handshake|
+// returns early as soon as the client (respectively, server) is allowed to send
+// 0-RTT (respectively, half-RTT) data. The caller should then call
+// |SSL_do_handshake| again to consume the remaining handshake messages and
+// confirm the handshake. As a client, |SSL_ERROR_EARLY_DATA_REJECTED| and
+// |SSL_reset_early_data_reject| behave as usual.
+//
+// Note that secrets for an encryption level may be available to QUIC before the
+// level is active in TLS. Callers should use |SSL_quic_read_level| to determine
+// the active read level for |SSL_provide_quic_data|. |SSL_do_handshake| will
+// pass the active write level to |SSL_QUIC_METHOD| when writing data. Callers
+// can use |SSL_quic_write_level| to query the active write level when
+// generating their own errors.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-tls-15#section-4.1 for more
+// details.
+//
+// To avoid DoS attacks, the QUIC implementation must limit the amount of data
+// being queued up. The implementation can call
+// |SSL_quic_max_handshake_flight_len| to get the maximum buffer length at each
+// encryption level.
+//
+// Note: 0-RTT support is incomplete and does not currently handle QUIC
+// transport parameters and server SETTINGS frame.
+
+// ssl_encryption_level_t represents a specific QUIC encryption level used to
+// transmit handshake messages.
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT {
+  ssl_encryption_initial = 0,
+  ssl_encryption_early_data,
+  ssl_encryption_handshake,
+  ssl_encryption_application,
+};
+
+// ssl_quic_method_st (aka |SSL_QUIC_METHOD|) describes custom QUIC hooks.
+struct ssl_quic_method_st {
+  // set_encryption_secrets configures the read and write secrets for the given
+  // encryption level. This function will always be called before an encryption
+  // level other than |ssl_encryption_initial| is used. Note, however, that
+  // secrets for a level may be configured before TLS is ready to send or accept
+  // data at that level.
+  //
+  // When reading packets at a given level, the QUIC implementation must send
+  // ACKs at the same level, so this function provides read and write secrets
+  // together. The exception is |ssl_encryption_early_data|, where secrets are
+  // only available in the client to server direction. The other secret will be
+  // NULL. The server acknowledges such data at |ssl_encryption_application|,
+  // which will be configured in the same |SSL_do_handshake| call.
+  //
+  // This function should use |SSL_get_current_cipher| to determine the TLS
+  // cipher suite.
+  //
+  // It returns one on success and zero on error.
+  int (*set_encryption_secrets)(SSL *ssl, enum ssl_encryption_level_t level,
+                                const uint8_t *read_secret,
+                                const uint8_t *write_secret, size_t secret_len);
+  // add_handshake_data adds handshake data to the current flight at the given
+  // encryption level. It returns one on success and zero on error.
+  //
+  // BoringSSL will pack data from a single encryption level together, but a
+  // single handshake flight may include multiple encryption levels. Callers
+  // should defer writing data to the network until |flush_flight| to better
+  // pack QUIC packets into transport datagrams.
+  int (*add_handshake_data)(SSL *ssl, enum ssl_encryption_level_t level,
+                            const uint8_t *data, size_t len);
+  // flush_flight is called when the current flight is complete and should be
+  // written to the transport. Note a flight may contain data at several
+  // encryption levels. It returns one on success and zero on error.
+  int (*flush_flight)(SSL *ssl);
+  // send_alert sends a fatal alert at the specified encryption level. It
+  // returns one on success and zero on error.
+  int (*send_alert)(SSL *ssl, enum ssl_encryption_level_t level, uint8_t alert);
+};
+
+// SSL_quic_max_handshake_flight_len returns returns the maximum number of bytes
+// that may be received at the given encryption level. This function should be
+// used to limit buffering in the QUIC implementation.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-transport-16#section-4.4.
+OPENSSL_EXPORT size_t SSL_quic_max_handshake_flight_len(
+    const SSL *ssl, enum ssl_encryption_level_t level);
+
+// SSL_quic_read_level returns the current read encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_read_level(const SSL *ssl);
+
+// SSL_quic_write_level returns the current write encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_write_level(const SSL *ssl);
+
+// SSL_provide_quic_data provides data from QUIC at a particular encryption
+// level |level|. It is an error to call this function outside of the handshake
+// or with an encryption level other than the current read level. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_provide_quic_data(SSL *ssl,
+                                         enum ssl_encryption_level_t level,
+                                         const uint8_t *data, size_t len);
+
+
+// SSL_process_quic_post_handshake processes any data that QUIC has provided
+// after the handshake has completed. This includes NewSessionTicket messages
+// sent by the server. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_process_quic_post_handshake(SSL *ssl);
+
+// SSL_CTX_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ctx|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_quic_method(SSL_CTX *ctx,
+                                           const SSL_QUIC_METHOD *quic_method);
+
+// SSL_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ssl|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_quic_method(SSL *ssl,
+                                       const SSL_QUIC_METHOD *quic_method);
+
+
+// Early data.
+//
+// WARNING: 0-RTT support in BoringSSL is currently experimental and not fully
+// implemented. It may cause interoperability or security failures when used.
+//
+// Early data, or 0-RTT, is a feature in TLS 1.3 which allows clients to send
+// data on the first flight during a resumption handshake. This can save a
+// round-trip in some application protocols.
+//
+// WARNING: A 0-RTT handshake has different security properties from normal
+// handshake, so it is off by default unless opted in. In particular, early data
+// is replayable by a network attacker. Callers must account for this when
+// sending or processing data before the handshake is confirmed. See RFC 8446
+// for more information.
+//
+// As a server, if early data is accepted, |SSL_do_handshake| will complete as
+// soon as the ClientHello is processed and server flight sent. |SSL_write| may
+// be used to send half-RTT data. |SSL_read| will consume early data and
+// transition to 1-RTT data as appropriate. Prior to the transition,
+// |SSL_in_init| will report the handshake is still in progress. Callers may use
+// it or |SSL_in_early_data| to defer or reject requests as needed.
+//
+// Early data as a client is more complex. If the offered session (see
+// |SSL_set_session|) is 0-RTT-capable, the handshake will return after sending
+// the ClientHello. The predicted peer certificates and ALPN protocol will be
+// available via the usual APIs. |SSL_write| will write early data, up to the
+// session's limit. Writes past this limit and |SSL_read| will complete the
+// handshake before continuing. Callers may also call |SSL_do_handshake| again
+// to complete the handshake sooner.
+//
+// If the server accepts early data, the handshake will succeed. |SSL_read| and
+// |SSL_write| will then act as in a 1-RTT handshake. The peer certificates and
+// ALPN protocol will be as predicted and need not be re-queried.
+//
+// If the server rejects early data, |SSL_do_handshake| (and thus |SSL_read| and
+// |SSL_write|) will then fail with |SSL_get_error| returning
+// |SSL_ERROR_EARLY_DATA_REJECTED|. The caller should treat this as a connection
+// error and most likely perform a high-level retry. Note the server may still
+// have processed the early data due to attacker replays.
+//
+// To then continue the handshake on the original connection, use
+// |SSL_reset_early_data_reject|. The connection will then behave as one which
+// had not yet completed the handshake. This allows a faster retry than making a
+// fresh connection. |SSL_do_handshake| will complete the full handshake,
+// possibly resulting in different peer certificates, ALPN protocol, and other
+// properties. The caller must disregard any values from before the reset and
+// query again.
+//
+// Finally, to implement the fallback described in RFC 8446 appendix D.3, retry
+// on a fresh connection without 0-RTT if the handshake fails with
+// |SSL_R_WRONG_VERSION_ON_EARLY_DATA|.
+
+// SSL_CTX_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_early_data_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ssl|. See |SSL_CTX_set_early_data_enabled| for more
+// information.
+OPENSSL_EXPORT void SSL_set_early_data_enabled(SSL *ssl, int enabled);
+
+// SSL_in_early_data returns one if |ssl| has a pending handshake that has
+// progressed enough to send or receive early data. Clients may call |SSL_write|
+// to send early data, but |SSL_read| will complete the handshake before
+// accepting application data. Servers may call |SSL_read| to read early data
+// and |SSL_write| to send half-RTT data.
+OPENSSL_EXPORT int SSL_in_early_data(const SSL *ssl);
+
+// SSL_SESSION_early_data_capable returns whether early data would have been
+// attempted with |session| if enabled.
+OPENSSL_EXPORT int SSL_SESSION_early_data_capable(const SSL_SESSION *session);
+
+// SSL_early_data_accepted returns whether early data was accepted on the
+// handshake performed by |ssl|.
+OPENSSL_EXPORT int SSL_early_data_accepted(const SSL *ssl);
+
+// SSL_reset_early_data_reject resets |ssl| after an early data reject. All
+// 0-RTT state is discarded, including any pending |SSL_write| calls. The caller
+// should treat |ssl| as a logically fresh connection, usually by driving the
+// handshake to completion using |SSL_do_handshake|.
+//
+// It is an error to call this function on an |SSL| object that is not signaling
+// |SSL_ERROR_EARLY_DATA_REJECTED|.
+OPENSSL_EXPORT void SSL_reset_early_data_reject(SSL *ssl);
+
+// SSL_get_ticket_age_skew returns the difference, in seconds, between the
+// client-sent ticket age and the server-computed value in TLS 1.3 server
+// connections which resumed a session.
+OPENSSL_EXPORT int32_t SSL_get_ticket_age_skew(const SSL *ssl);
+
+// An ssl_early_data_reason_t describes why 0-RTT was accepted or rejected.
+// These values are persisted to logs. Entries should not be renumbered and
+// numeric values should never be reused.
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT {
+  // The handshake has not progressed far enough for the 0-RTT status to be
+  // known.
+  ssl_early_data_unknown = 0,
+  // 0-RTT is disabled for this connection.
+  ssl_early_data_disabled = 1,
+  // 0-RTT was accepted.
+  ssl_early_data_accepted = 2,
+  // The negotiated protocol version does not support 0-RTT.
+  ssl_early_data_protocol_version = 3,
+  // The peer declined to offer or accept 0-RTT for an unknown reason.
+  ssl_early_data_peer_declined = 4,
+  // The client did not offer a session.
+  ssl_early_data_no_session_offered = 5,
+  // The server declined to resume the session.
+  ssl_early_data_session_not_resumed = 6,
+  // The session does not support 0-RTT.
+  ssl_early_data_unsupported_for_session = 7,
+  // The server sent a HelloRetryRequest.
+  ssl_early_data_hello_retry_request = 8,
+  // The negotiated ALPN protocol did not match the session.
+  ssl_early_data_alpn_mismatch = 9,
+  // The connection negotiated Channel ID, which is incompatible with 0-RTT.
+  ssl_early_data_channel_id = 10,
+  // The connection negotiated token binding, which is incompatible with 0-RTT.
+  ssl_early_data_token_binding = 11,
+  // The client and server ticket age were too far apart.
+  ssl_early_data_ticket_age_skew = 12,
+  // The value of the largest entry.
+  ssl_early_data_reason_max_value = ssl_early_data_ticket_age_skew,
+};
+
+// SSL_get_early_data_reason returns details why 0-RTT was accepted or rejected
+// on |ssl|. This is primarily useful on the server.
+OPENSSL_EXPORT enum ssl_early_data_reason_t SSL_get_early_data_reason(
+    const SSL *ssl);
+
+
+// Alerts.
+//
+// TLS uses alerts to signal error conditions. Alerts have a type (warning or
+// fatal) and description. OpenSSL internally handles fatal alerts with
+// dedicated error codes (see |SSL_AD_REASON_OFFSET|). Except for close_notify,
+// warning alerts are silently ignored and may only be surfaced with
+// |SSL_CTX_set_info_callback|.
+
+// SSL_AD_REASON_OFFSET is the offset between error reasons and |SSL_AD_*|
+// values. Any error code under |ERR_LIB_SSL| with an error reason above this
+// value corresponds to an alert description. Consumers may add or subtract
+// |SSL_AD_REASON_OFFSET| to convert between them.
+//
+// make_errors.go reserves error codes above 1000 for manually-assigned errors.
+// This value must be kept in sync with reservedReasonCode in make_errors.h
+#define SSL_AD_REASON_OFFSET 1000
+
+// SSL_AD_* are alert descriptions.
+#define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
+#define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
+#define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
+#define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
+#define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
+#define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
+#define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
+#define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE  // Legacy SSL 3.0 value
+#define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
+#define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
+#define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
+#define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
+#define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
+#define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
+#define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
+#define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
+#define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
+#define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
+#define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
+#define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
+#define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
+#define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
+#define SSL_AD_INAPPROPRIATE_FALLBACK SSL3_AD_INAPPROPRIATE_FALLBACK
+#define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
+#define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
+#define SSL_AD_MISSING_EXTENSION TLS1_AD_MISSING_EXTENSION
+#define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
+#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
+#define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
+#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE \
+  TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
+#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
+#define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
+#define SSL_AD_CERTIFICATE_REQUIRED TLS1_AD_CERTIFICATE_REQUIRED
+
+// SSL_alert_type_string_long returns a string description of |value| as an
+// alert type (warning or fatal).
+OPENSSL_EXPORT const char *SSL_alert_type_string_long(int value);
+
+// SSL_alert_desc_string_long returns a string description of |value| as an
+// alert description or "unknown" if unknown.
+OPENSSL_EXPORT const char *SSL_alert_desc_string_long(int value);
+
+// SSL_send_fatal_alert sends a fatal alert over |ssl| of the specified type,
+// which should be one of the |SSL_AD_*| constants. It returns one on success
+// and <= 0 on error. The caller should pass the return value into
+// |SSL_get_error| to determine how to proceed. Once this function has been
+// called, future calls to |SSL_write| will fail.
+//
+// If retrying a failed operation due to |SSL_ERROR_WANT_WRITE|, subsequent
+// calls must use the same |alert| parameter.
+OPENSSL_EXPORT int SSL_send_fatal_alert(SSL *ssl, uint8_t alert);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int SSL_set_ex_data(SSL *ssl, int idx, void *data);
+OPENSSL_EXPORT void *SSL_get_ex_data(const SSL *ssl, int idx);
+OPENSSL_EXPORT int SSL_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx,
+                                           void *data);
+OPENSSL_EXPORT void *SSL_SESSION_get_ex_data(const SSL_SESSION *session,
+                                             int idx);
+OPENSSL_EXPORT int SSL_SESSION_get_ex_new_index(long argl, void *argp,
+                                                CRYPTO_EX_unused *unused,
+                                                CRYPTO_EX_dup *dup_unused,
+                                                CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *data);
+OPENSSL_EXPORT void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx);
+OPENSSL_EXPORT int SSL_CTX_get_ex_new_index(long argl, void *argp,
+                                            CRYPTO_EX_unused *unused,
+                                            CRYPTO_EX_dup *dup_unused,
+                                            CRYPTO_EX_free *free_func);
+
+
+// Low-level record-layer state.
+
+// SSL_get_ivs sets |*out_iv_len| to the length of the IVs for the ciphers
+// underlying |ssl| and sets |*out_read_iv| and |*out_write_iv| to point to the
+// current IVs for the read and write directions. This is only meaningful for
+// connections with implicit IVs (i.e. CBC mode with TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
+                               const uint8_t **out_write_iv,
+                               size_t *out_iv_len);
+
+// SSL_get_key_block_len returns the length of |ssl|'s key block.
+OPENSSL_EXPORT size_t SSL_get_key_block_len(const SSL *ssl);
+
+// SSL_generate_key_block generates |out_len| bytes of key material for |ssl|'s
+// current connection state.
+OPENSSL_EXPORT int SSL_generate_key_block(const SSL *ssl, uint8_t *out,
+                                          size_t out_len);
+
+// SSL_get_read_sequence returns, in TLS, the expected sequence number of the
+// next incoming record in the current epoch. In DTLS, it returns the maximum
+// sequence number received in the current epoch and includes the epoch number
+// in the two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_read_sequence(const SSL *ssl);
+
+// SSL_get_write_sequence returns the sequence number of the next outgoing
+// record in the current epoch. In DTLS, it includes the epoch number in the
+// two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_write_sequence(const SSL *ssl);
+
+
+// Obscure functions.
+
+// SSL_CTX_set_msg_callback installs |cb| as the message callback for |ctx|.
+// This callback will be called when sending or receiving low-level record
+// headers, complete handshake messages, ChangeCipherSpec, and alerts.
+// |write_p| is one for outgoing messages and zero for incoming messages.
+//
+// For each record header, |cb| is called with |version| = 0 and |content_type|
+// = |SSL3_RT_HEADER|. The |len| bytes from |buf| contain the header. Note that
+// this does not include the record body. If the record is sealed, the length
+// in the header is the length of the ciphertext.
+//
+// For each handshake message, ChangeCipherSpec, and alert, |version| is the
+// protocol version and |content_type| is the corresponding record type. The
+// |len| bytes from |buf| contain the handshake message, one-byte
+// ChangeCipherSpec body, and two-byte alert, respectively.
+//
+// For a V2ClientHello, |version| is |SSL2_VERSION|, |content_type| is zero, and
+// the |len| bytes from |buf| contain the V2ClientHello structure.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback(
+    SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type,
+                             const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_CTX_set_msg_callback_arg sets the |arg| parameter of the message
+// callback.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_set_msg_callback installs |cb| as the message callback of |ssl|. See
+// |SSL_CTX_set_msg_callback| for when this callback is called.
+OPENSSL_EXPORT void SSL_set_msg_callback(
+    SSL *ssl, void (*cb)(int write_p, int version, int content_type,
+                         const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_set_msg_callback_arg sets the |arg| parameter of the message callback.
+OPENSSL_EXPORT void SSL_set_msg_callback_arg(SSL *ssl, void *arg);
+
+// SSL_CTX_set_keylog_callback configures a callback to log key material. This
+// is intended for debugging use with tools like Wireshark. The |cb| function
+// should log |line| followed by a newline, synchronizing with any concurrent
+// access to the log.
+//
+// The format is described in
+// https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/Key_Log_Format.
+OPENSSL_EXPORT void SSL_CTX_set_keylog_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, const char *line));
+
+// SSL_CTX_get_keylog_callback returns the callback configured by
+// |SSL_CTX_set_keylog_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(
+    const SSL *ssl, const char *line);
+
+// SSL_CTX_set_current_time_cb configures a callback to retrieve the current
+// time, which should be set in |*out_clock|. This can be used for testing
+// purposes; for example, a callback can be configured that returns a time
+// set explicitly by the test. The |ssl| pointer passed to |cb| is always null.
+OPENSSL_EXPORT void SSL_CTX_set_current_time_cb(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, struct timeval *out_clock));
+
+// SSL_set_shed_handshake_config allows some of the configuration of |ssl| to be
+// freed after its handshake completes.  Once configuration has been shed, APIs
+// that query it may fail.  "Configuration" in this context means anything that
+// was set by the caller, as distinct from information derived from the
+// handshake.  For example, |SSL_get_ciphers| queries how the |SSL| was
+// configured by the caller, and fails after configuration has been shed,
+// whereas |SSL_get_cipher| queries the result of the handshake, and is
+// unaffected by configuration shedding.
+//
+// If configuration shedding is enabled, it is an error to call |SSL_clear|.
+//
+// Note that configuration shedding as a client additionally depends on
+// renegotiation being disabled (see |SSL_set_renegotiate_mode|). If
+// renegotiation is possible, the configuration will be retained. If
+// configuration shedding is enabled and renegotiation later disabled after the
+// handshake, |SSL_set_renegotiate_mode| will shed configuration then. This may
+// be useful for clients which support renegotiation with some ALPN protocols,
+// such as HTTP/1.1, and not others, such as HTTP/2.
+OPENSSL_EXPORT void SSL_set_shed_handshake_config(SSL *ssl, int enable);
+
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT {
+  ssl_renegotiate_never = 0,
+  ssl_renegotiate_once,
+  ssl_renegotiate_freely,
+  ssl_renegotiate_ignore,
+  ssl_renegotiate_explicit,
+};
+
+// SSL_set_renegotiate_mode configures how |ssl|, a client, reacts to
+// renegotiation attempts by a server. If |ssl| is a server, peer-initiated
+// renegotiations are *always* rejected and this function does nothing.
+//
+// The renegotiation mode defaults to |ssl_renegotiate_never|, but may be set
+// at any point in a connection's lifetime. Set it to |ssl_renegotiate_once| to
+// allow one renegotiation, |ssl_renegotiate_freely| to allow all
+// renegotiations or |ssl_renegotiate_ignore| to ignore HelloRequest messages.
+// Note that ignoring HelloRequest messages may cause the connection to stall
+// if the server waits for the renegotiation to complete.
+//
+// If set to |ssl_renegotiate_explicit|, |SSL_read| and |SSL_peek| calls which
+// encounter a HelloRequest will pause with |SSL_ERROR_WANT_RENEGOTIATE|.
+// |SSL_write| will continue to work while paused. The caller may call
+// |SSL_renegotiate| to begin the renegotiation at a later point. This mode may
+// be used if callers wish to eagerly call |SSL_peek| without triggering a
+// renegotiation.
+//
+// If configuration shedding is enabled (see |SSL_set_shed_handshake_config|),
+// configuration is released if, at any point after the handshake, renegotiation
+// is disabled. It is not possible to switch from disabling renegotiation to
+// enabling it on a given connection. Callers that condition renegotiation on,
+// e.g., ALPN must enable renegotiation before the handshake and conditionally
+// disable it afterwards.
+//
+// There is no support in BoringSSL for initiating renegotiations as a client
+// or server.
+OPENSSL_EXPORT void SSL_set_renegotiate_mode(SSL *ssl,
+                                             enum ssl_renegotiate_mode_t mode);
+
+// SSL_renegotiate starts a deferred renegotiation on |ssl| if it was configured
+// with |ssl_renegotiate_explicit| and has a pending HelloRequest. It returns
+// one on success and zero on error.
+//
+// This function does not do perform any I/O. On success, a subsequent
+// |SSL_do_handshake| call will run the handshake. |SSL_write| and
+// |SSL_read| will also complete the handshake before sending or receiving
+// application data.
+OPENSSL_EXPORT int SSL_renegotiate(SSL *ssl);
+
+// SSL_renegotiate_pending returns one if |ssl| is in the middle of a
+// renegotiation.
+OPENSSL_EXPORT int SSL_renegotiate_pending(SSL *ssl);
+
+// SSL_total_renegotiations returns the total number of renegotiation handshakes
+// performed by |ssl|. This includes the pending renegotiation, if any.
+OPENSSL_EXPORT int SSL_total_renegotiations(const SSL *ssl);
+
+// SSL_MAX_CERT_LIST_DEFAULT is the default maximum length, in bytes, of a peer
+// certificate chain.
+#define SSL_MAX_CERT_LIST_DEFAULT (1024 * 100)
+
+// SSL_CTX_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ctx|.
+OPENSSL_EXPORT size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx);
+
+// SSL_CTX_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_CTX_set_max_cert_list(SSL_CTX *ctx,
+                                              size_t max_cert_list);
+
+// SSL_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ssl|.
+OPENSSL_EXPORT size_t SSL_get_max_cert_list(const SSL *ssl);
+
+// SSL_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list);
+
+// SSL_CTX_set_max_send_fragment sets the maximum length, in bytes, of records
+// sent by |ctx|. Beyond this length, handshake messages and application data
+// will be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx,
+                                                 size_t max_send_fragment);
+
+// SSL_set_max_send_fragment sets the maximum length, in bytes, of records sent
+// by |ssl|. Beyond this length, handshake messages and application data will
+// be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_set_max_send_fragment(SSL *ssl,
+                                             size_t max_send_fragment);
+
+// ssl_early_callback_ctx (aka |SSL_CLIENT_HELLO|) is passed to certain
+// callbacks that are called very early on during the server handshake. At this
+// point, much of the SSL* hasn't been filled out and only the ClientHello can
+// be depended on.
+typedef struct ssl_early_callback_ctx {
+  SSL *ssl;
+  const uint8_t *client_hello;
+  size_t client_hello_len;
+  uint16_t version;
+  const uint8_t *random;
+  size_t random_len;
+  const uint8_t *session_id;
+  size_t session_id_len;
+  const uint8_t *cipher_suites;
+  size_t cipher_suites_len;
+  const uint8_t *compression_methods;
+  size_t compression_methods_len;
+  const uint8_t *extensions;
+  size_t extensions_len;
+} SSL_CLIENT_HELLO;
+
+// ssl_select_cert_result_t enumerates the possible results from selecting a
+// certificate with |select_certificate_cb|.
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT {
+  // ssl_select_cert_success indicates that the certificate selection was
+  // successful.
+  ssl_select_cert_success = 1,
+  // ssl_select_cert_retry indicates that the operation could not be
+  // immediately completed and must be reattempted at a later point.
+  ssl_select_cert_retry = 0,
+  // ssl_select_cert_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_select_cert_error = -1,
+};
+
+// SSL_early_callback_ctx_extension_get searches the extensions in
+// |client_hello| for an extension of the given type. If not found, it returns
+// zero. Otherwise it sets |out_data| to point to the extension contents (not
+// including the type and length bytes), sets |out_len| to the length of the
+// extension contents and returns one.
+OPENSSL_EXPORT int SSL_early_callback_ctx_extension_get(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t extension_type,
+    const uint8_t **out_data, size_t *out_len);
+
+// SSL_CTX_set_select_certificate_cb sets a callback that is called before most
+// ClientHello processing and before the decision whether to resume a session
+// is made. The callback may inspect the ClientHello and configure the
+// connection. See |ssl_select_cert_result_t| for details of the return values.
+//
+// In the case that a retry is indicated, |SSL_get_error| will return
+// |SSL_ERROR_PENDING_CERTIFICATE| and the caller should arrange for the
+// high-level operation on |ssl| to be retried at a later time, which will
+// result in another call to |cb|.
+//
+// |SSL_get_servername| may be used during this callback.
+//
+// Note: The |SSL_CLIENT_HELLO| is only valid for the duration of the callback
+// and is not valid while the handshake is paused.
+OPENSSL_EXPORT void SSL_CTX_set_select_certificate_cb(
+    SSL_CTX *ctx,
+    enum ssl_select_cert_result_t (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_dos_protection_cb sets a callback that is called once the
+// resumption decision for a ClientHello has been made. It can return one to
+// allow the handshake to continue or zero to cause the handshake to abort.
+OPENSSL_EXPORT void SSL_CTX_set_dos_protection_cb(
+    SSL_CTX *ctx, int (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_reverify_on_resume configures whether the certificate
+// verification callback will be used to reverify stored certificates
+// when resuming a session. This only works with |SSL_CTX_set_custom_verify|.
+// For now, this is incompatible with |SSL_VERIFY_NONE| mode, and is only
+// respected on clients.
+OPENSSL_EXPORT void SSL_CTX_set_reverify_on_resume(SSL_CTX *ctx, int enabled);
+
+// SSL_set_enforce_rsa_key_usage configures whether the keyUsage extension of
+// RSA leaf certificates will be checked for consistency with the TLS
+// usage. This parameter may be set late; it will not be read until after the
+// certificate verification callback.
+OPENSSL_EXPORT void SSL_set_enforce_rsa_key_usage(SSL *ssl, int enabled);
+
+// SSL_ST_* are possible values for |SSL_state|, the bitmasks that make them up,
+// and some historical values for compatibility. Only |SSL_ST_INIT| and
+// |SSL_ST_OK| are ever returned.
+#define SSL_ST_CONNECT 0x1000
+#define SSL_ST_ACCEPT 0x2000
+#define SSL_ST_MASK 0x0FFF
+#define SSL_ST_INIT (SSL_ST_CONNECT | SSL_ST_ACCEPT)
+#define SSL_ST_OK 0x03
+#define SSL_ST_RENEGOTIATE (0x04 | SSL_ST_INIT)
+#define SSL_ST_BEFORE (0x05 | SSL_ST_INIT)
+
+// TLS_ST_* are aliases for |SSL_ST_*| for OpenSSL 1.1.0 compatibility.
+#define TLS_ST_OK SSL_ST_OK
+#define TLS_ST_BEFORE SSL_ST_BEFORE
+
+// SSL_CB_* are possible values for the |type| parameter in the info
+// callback and the bitmasks that make them up.
+#define SSL_CB_LOOP 0x01
+#define SSL_CB_EXIT 0x02
+#define SSL_CB_READ 0x04
+#define SSL_CB_WRITE 0x08
+#define SSL_CB_ALERT 0x4000
+#define SSL_CB_READ_ALERT (SSL_CB_ALERT | SSL_CB_READ)
+#define SSL_CB_WRITE_ALERT (SSL_CB_ALERT | SSL_CB_WRITE)
+#define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT | SSL_CB_LOOP)
+#define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT | SSL_CB_EXIT)
+#define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT | SSL_CB_LOOP)
+#define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT | SSL_CB_EXIT)
+#define SSL_CB_HANDSHAKE_START 0x10
+#define SSL_CB_HANDSHAKE_DONE 0x20
+
+// SSL_CTX_set_info_callback configures a callback to be run when various
+// events occur during a connection's lifetime. The |type| argument determines
+// the type of event and the meaning of the |value| argument. Callbacks must
+// ignore unexpected |type| values.
+//
+// |SSL_CB_READ_ALERT| is signaled for each alert received, warning or fatal.
+// The |value| argument is a 16-bit value where the alert level (either
+// |SSL3_AL_WARNING| or |SSL3_AL_FATAL|) is in the most-significant eight bits
+// and the alert type (one of |SSL_AD_*|) is in the least-significant eight.
+//
+// |SSL_CB_WRITE_ALERT| is signaled for each alert sent. The |value| argument
+// is constructed as with |SSL_CB_READ_ALERT|.
+//
+// |SSL_CB_HANDSHAKE_START| is signaled when a handshake begins. The |value|
+// argument is always one.
+//
+// |SSL_CB_HANDSHAKE_DONE| is signaled when a handshake completes successfully.
+// The |value| argument is always one. If a handshake False Starts, this event
+// may be used to determine when the Finished message is received.
+//
+// The following event types expose implementation details of the handshake
+// state machine. Consuming them is deprecated.
+//
+// |SSL_CB_ACCEPT_LOOP| (respectively, |SSL_CB_CONNECT_LOOP|) is signaled when
+// a server (respectively, client) handshake progresses. The |value| argument
+// is always one.
+//
+// |SSL_CB_ACCEPT_EXIT| (respectively, |SSL_CB_CONNECT_EXIT|) is signaled when
+// a server (respectively, client) handshake completes, fails, or is paused.
+// The |value| argument is one if the handshake succeeded and <= 0
+// otherwise.
+OPENSSL_EXPORT void SSL_CTX_set_info_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_CTX_get_info_callback returns the callback set by
+// |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,
+                                                               int type,
+                                                               int value);
+
+// SSL_set_info_callback configures a callback to be run at various events
+// during a connection's lifetime. See |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void SSL_set_info_callback(
+    SSL *ssl, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_get_info_callback returns the callback set by |SSL_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,
+                                                             int type,
+                                                             int value);
+
+// SSL_state_string_long returns the current state of the handshake state
+// machine as a string. This may be useful for debugging and logging.
+OPENSSL_EXPORT const char *SSL_state_string_long(const SSL *ssl);
+
+#define SSL_SENT_SHUTDOWN 1
+#define SSL_RECEIVED_SHUTDOWN 2
+
+// SSL_get_shutdown returns a bitmask with a subset of |SSL_SENT_SHUTDOWN| and
+// |SSL_RECEIVED_SHUTDOWN| to query whether close_notify was sent or received,
+// respectively.
+OPENSSL_EXPORT int SSL_get_shutdown(const SSL *ssl);
+
+// SSL_get_peer_signature_algorithm returns the signature algorithm used by the
+// peer. If not applicable, it returns zero.
+OPENSSL_EXPORT uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl);
+
+// SSL_get_client_random writes up to |max_out| bytes of the most recent
+// handshake's client_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the client_random.
+OPENSSL_EXPORT size_t SSL_get_client_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_server_random writes up to |max_out| bytes of the most recent
+// handshake's server_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the server_random.
+OPENSSL_EXPORT size_t SSL_get_server_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_pending_cipher returns the cipher suite for the current handshake or
+// NULL if one has not been negotiated yet or there is no pending handshake.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl);
+
+// SSL_set_retain_only_sha256_of_client_certs, on a server, sets whether only
+// the SHA-256 hash of peer's certificate should be saved in memory and in the
+// session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_set_retain_only_sha256_of_client_certs(SSL *ssl,
+                                                               int enable);
+
+// SSL_CTX_set_retain_only_sha256_of_client_certs, on a server, sets whether
+// only the SHA-256 hash of peer's certificate should be saved in memory and in
+// the session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx,
+                                                                   int enable);
+
+// SSL_CTX_set_grease_enabled configures whether sockets on |ctx| should enable
+// GREASE. See draft-davidben-tls-grease-01.
+OPENSSL_EXPORT void SSL_CTX_set_grease_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_max_seal_overhead returns the maximum overhead, in bytes, of sealing a
+// record with |ssl|.
+OPENSSL_EXPORT size_t SSL_max_seal_overhead(const SSL *ssl);
+
+// SSL_CTX_set_false_start_allowed_without_alpn configures whether connections
+// on |ctx| may use False Start (if |SSL_MODE_ENABLE_FALSE_START| is enabled)
+// without negotiating ALPN.
+OPENSSL_EXPORT void SSL_CTX_set_false_start_allowed_without_alpn(SSL_CTX *ctx,
+                                                                 int allowed);
+
+// SSL_CTX_set_ignore_tls13_downgrade configures whether connections on |ctx|
+// ignore the downgrade signal in the server's random value.
+OPENSSL_EXPORT void SSL_CTX_set_ignore_tls13_downgrade(SSL_CTX *ctx,
+                                                       int ignore);
+
+// SSL_set_ignore_tls13_downgrade configures whether |ssl| ignores the downgrade
+// signal in the server's random value.
+OPENSSL_EXPORT void SSL_set_ignore_tls13_downgrade(SSL *ssl, int ignore);
+
+// SSL_is_tls13_downgrade returns one if the TLS 1.3 anti-downgrade
+// mechanism would have aborted |ssl|'s handshake and zero otherwise.
+OPENSSL_EXPORT int SSL_is_tls13_downgrade(const SSL *ssl);
+
+// SSL_used_hello_retry_request returns one if the TLS 1.3 HelloRetryRequest
+// message has been either sent by the server or received by the client. It
+// returns zero otherwise.
+OPENSSL_EXPORT int SSL_used_hello_retry_request(const SSL *ssl);
+
+// SSL_set_jdk11_workaround configures whether to workaround various bugs in
+// JDK 11's TLS 1.3 implementation by disabling TLS 1.3 for such clients.
+//
+// https://bugs.openjdk.java.net/browse/JDK-8211806
+// https://bugs.openjdk.java.net/browse/JDK-8212885
+// https://bugs.openjdk.java.net/browse/JDK-8213202
+OPENSSL_EXPORT void SSL_set_jdk11_workaround(SSL *ssl, int enable);
+
+
+// Deprecated functions.
+
+// SSL_library_init calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int SSL_library_init(void);
+
+// SSL_CIPHER_description writes a description of |cipher| into |buf| and
+// returns |buf|. If |buf| is NULL, it returns a newly allocated string, to be
+// freed with |OPENSSL_free|, or NULL on error.
+//
+// The description includes a trailing newline and has the form:
+// AES128-SHA              Kx=RSA      Au=RSA  Enc=AES(128)  Mac=SHA1
+//
+// Consider |SSL_CIPHER_standard_name| or |SSL_CIPHER_get_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_description(const SSL_CIPHER *cipher,
+                                                  char *buf, int len);
+
+// SSL_CIPHER_get_version returns the string "TLSv1/SSLv3".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_rfc_name returns a newly-allocated string containing the
+// result of |SSL_CIPHER_standard_name| or NULL on error. The caller is
+// responsible for calling |OPENSSL_free| on the result.
+//
+// Use |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT char *SSL_CIPHER_get_rfc_name(const SSL_CIPHER *cipher);
+
+typedef void COMP_METHOD;
+typedef struct ssl_comp_st SSL_COMP;
+
+// SSL_COMP_get_compression_methods returns NULL.
+OPENSSL_EXPORT STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
+
+// SSL_COMP_add_compression_method returns one.
+OPENSSL_EXPORT int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
+
+// SSL_COMP_get_name returns NULL.
+OPENSSL_EXPORT const char *SSL_COMP_get_name(const COMP_METHOD *comp);
+
+// SSL_COMP_get0_name returns the |name| member of |comp|.
+OPENSSL_EXPORT const char *SSL_COMP_get0_name(const SSL_COMP *comp);
+
+// SSL_COMP_get_id returns the |id| member of |comp|.
+OPENSSL_EXPORT int SSL_COMP_get_id(const SSL_COMP *comp);
+
+// SSL_COMP_free_compression_methods does nothing.
+OPENSSL_EXPORT void SSL_COMP_free_compression_methods(void);
+
+// SSLv23_method calls |TLS_method|.
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_method(void);
+
+// These version-specific methods behave exactly like |TLS_method| and
+// |DTLS_method| except they also call |SSL_CTX_set_min_proto_version| and
+// |SSL_CTX_set_max_proto_version| to lock connections to that protocol
+// version.
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_method(void);
+
+// These client- and server-specific methods call their corresponding generic
+// methods.
+OPENSSL_EXPORT const SSL_METHOD *TLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_client_method(void);
+
+// SSL_clear resets |ssl| to allow another connection and returns one on success
+// or zero on failure. It returns most configuration state but releases memory
+// associated with the current connection.
+//
+// Free |ssl| and create a new one instead.
+OPENSSL_EXPORT int SSL_clear(SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_rsa_callback(
+    SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_rsa_callback(SSL *ssl,
+                                             RSA *(*cb)(SSL *ssl, int is_export,
+                                                        int keylength));
+
+// SSL_CTX_sess_connect returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cb_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_misses returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_misses(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_timeouts returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_timeouts(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cache_full returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cache_full(const SSL_CTX *ctx);
+
+// SSL_cutthrough_complete calls |SSL_in_false_start|.
+OPENSSL_EXPORT int SSL_cutthrough_complete(const SSL *ssl);
+
+// SSL_num_renegotiations calls |SSL_total_renegotiations|.
+OPENSSL_EXPORT int SSL_num_renegotiations(const SSL *ssl);
+
+// SSL_CTX_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx);
+
+// SSL_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_need_tmp_RSA(const SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa);
+
+// SSL_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa);
+
+// SSL_CTX_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_CTX_get_read_ahead(const SSL_CTX *ctx);
+
+// SSL_CTX_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes);
+
+// SSL_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_get_read_ahead(const SSL *ssl);
+
+// SSL_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_set_read_ahead(SSL *ssl, int yes);
+
+// SSL_set_state does nothing.
+OPENSSL_EXPORT void SSL_set_state(SSL *ssl, int state);
+
+// SSL_get_shared_ciphers writes an empty string to |buf| and returns a
+// pointer to |buf|, or NULL if |len| is less than or equal to zero.
+OPENSSL_EXPORT char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len);
+
+// SSL_get_shared_sigalgs returns zero.
+OPENSSL_EXPORT int SSL_get_shared_sigalgs(SSL *ssl, int idx, int *psign,
+                                          int *phash, int *psignandhash,
+                                          uint8_t *rsig, uint8_t *rhash);
+
+// SSL_MODE_HANDSHAKE_CUTTHROUGH is the same as SSL_MODE_ENABLE_FALSE_START.
+#define SSL_MODE_HANDSHAKE_CUTTHROUGH SSL_MODE_ENABLE_FALSE_START
+
+// i2d_SSL_SESSION serializes |in| to the bytes pointed to by |*pp|. On success,
+// it returns the number of bytes written and advances |*pp| by that many bytes.
+// On failure, it returns -1. If |pp| is NULL, no bytes are written and only the
+// length is returned.
+//
+// Use |SSL_SESSION_to_bytes| instead.
+OPENSSL_EXPORT int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp);
+
+// d2i_SSL_SESSION parses a serialized session from the |length| bytes pointed
+// to by |*pp|. It returns the new |SSL_SESSION| and advances |*pp| by the
+// number of bytes consumed on success and NULL on failure. The caller takes
+// ownership of the new session and must call |SSL_SESSION_free| when done.
+//
+// If |a| is non-NULL, |*a| is released and set the new |SSL_SESSION|.
+//
+// Use |SSL_SESSION_from_bytes| instead.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp,
+                                            long length);
+
+// i2d_SSL_SESSION_bio serializes |session| and writes the result to |bio|. It
+// returns the number of bytes written on success and <= 0 on error.
+OPENSSL_EXPORT int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session);
+
+// d2i_SSL_SESSION_bio reads a serialized |SSL_SESSION| from |bio| and returns a
+// newly-allocated |SSL_SESSION| or NULL on error. If |out| is not NULL, it also
+// frees |*out| and sets |*out| to the new |SSL_SESSION|.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out);
+
+// ERR_load_SSL_strings does nothing.
+OPENSSL_EXPORT void ERR_load_SSL_strings(void);
+
+// SSL_load_error_strings does nothing.
+OPENSSL_EXPORT void SSL_load_error_strings(void);
+
+// SSL_CTX_set_tlsext_use_srtp calls |SSL_CTX_set_srtp_profiles|. It returns
+// zero on success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_CTX_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx,
+                                               const char *profiles);
+
+// SSL_set_tlsext_use_srtp calls |SSL_set_srtp_profiles|. It returns zero on
+// success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles);
+
+// SSL_get_current_compression returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_compression(SSL *ssl);
+
+// SSL_get_current_expansion returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_expansion(SSL *ssl);
+
+// SSL_get_server_tmp_key returns zero.
+OPENSSL_EXPORT int SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key);
+
+// SSL_CTX_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh);
+
+// SSL_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_set_tmp_dh(SSL *ssl, const DH *dh);
+
+// SSL_CTX_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_dh_callback(
+    SSL_CTX *ctx, DH *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_dh_callback(SSL *ssl,
+                                            DH *(*cb)(SSL *ssl, int is_export,
+                                                      int keylength));
+
+// SSL_CTX_set1_sigalgs takes |num_values| ints and interprets them as pairs
+// where the first is the nid of a hash function and the second is an
+// |EVP_PKEY_*| value. It configures the signature algorithm preferences for
+// |ctx| based on them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs(SSL_CTX *ctx, const int *values,
+                                        size_t num_values);
+
+// SSL_set1_sigalgs takes |num_values| ints and interprets them as pairs where
+// the first is the nid of a hash function and the second is an |EVP_PKEY_*|
+// value. It configures the signature algorithm preferences for |ssl| based on
+// them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs(SSL *ssl, const int *values,
+                                    size_t num_values);
+
+// SSL_CTX_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ctx|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ssl|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs_list(SSL *ssl, const char *str);
+
+#define SSL_set_app_data(s, arg) (SSL_set_ex_data(s, 0, (char *)(arg)))
+#define SSL_get_app_data(s) (SSL_get_ex_data(s, 0))
+#define SSL_SESSION_set_app_data(s, a) \
+  (SSL_SESSION_set_ex_data(s, 0, (char *)(a)))
+#define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s, 0))
+#define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx, 0))
+#define SSL_CTX_set_app_data(ctx, arg) \
+  (SSL_CTX_set_ex_data(ctx, 0, (char *)(arg)))
+
+#define OpenSSL_add_ssl_algorithms() SSL_library_init()
+#define SSLeay_add_ssl_algorithms() SSL_library_init()
+
+#define SSL_get_cipher(ssl) SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_bits(ssl, out_alg_bits) \
+    SSL_CIPHER_get_bits(SSL_get_current_cipher(ssl), out_alg_bits)
+#define SSL_get_cipher_version(ssl) \
+    SSL_CIPHER_get_version(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_name(ssl) \
+    SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_time(session) SSL_SESSION_get_time(session)
+#define SSL_set_time(session, time) SSL_SESSION_set_time((session), (time))
+#define SSL_get_timeout(session) SSL_SESSION_get_timeout(session)
+#define SSL_set_timeout(session, timeout) \
+    SSL_SESSION_set_timeout((session), (timeout))
+
+struct ssl_comp_st {
+  int id;
+  const char *name;
+  char *method;
+};
+
+DEFINE_STACK_OF(SSL_COMP)
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define SSL_MODE_AUTO_RETRY 0
+#define SSL_MODE_RELEASE_BUFFERS 0
+#define SSL_MODE_SEND_CLIENTHELLO_TIME 0
+#define SSL_MODE_SEND_SERVERHELLO_TIME 0
+#define SSL_OP_ALL 0
+#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0
+#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 0
+#define SSL_OP_EPHEMERAL_RSA 0
+#define SSL_OP_LEGACY_SERVER_CONNECT 0
+#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0
+#define SSL_OP_MICROSOFT_SESS_ID_BUG 0
+#define SSL_OP_MSIE_SSLV2_RSA_PADDING 0
+#define SSL_OP_NETSCAPE_CA_DN_BUG 0
+#define SSL_OP_NETSCAPE_CHALLENGE_BUG 0
+#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NO_COMPRESSION 0
+#define SSL_OP_NO_RENEGOTIATION 0  // ssl_renegotiate_never is the default
+#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0
+#define SSL_OP_NO_SSLv2 0
+#define SSL_OP_NO_SSLv3 0
+#define SSL_OP_PKCS1_CHECK_1 0
+#define SSL_OP_PKCS1_CHECK_2 0
+#define SSL_OP_SINGLE_DH_USE 0
+#define SSL_OP_SINGLE_ECDH_USE 0
+#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0
+#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0
+#define SSL_OP_TLS_BLOCK_PADDING_BUG 0
+#define SSL_OP_TLS_D5_BUG 0
+#define SSL_OP_TLS_ROLLBACK_BUG 0
+#define SSL_VERIFY_CLIENT_ONCE 0
+
+// SSL_cache_hit calls |SSL_session_reused|.
+OPENSSL_EXPORT int SSL_cache_hit(SSL *ssl);
+
+// SSL_get_default_timeout returns |SSL_DEFAULT_SESSION_TIMEOUT|.
+OPENSSL_EXPORT long SSL_get_default_timeout(const SSL *ssl);
+
+// SSL_get_version returns a string describing the TLS version used by |ssl|.
+// For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_get_version(const SSL *ssl);
+
+// SSL_get_cipher_list returns the name of the |n|th cipher in the output of
+// |SSL_get_ciphers| or NULL if out of range. Use |SSL_get_ciphers| instead.
+OPENSSL_EXPORT const char *SSL_get_cipher_list(const SSL *ssl, int n);
+
+// SSL_CTX_set_client_cert_cb sets a callback which is called on the client if
+// the server requests a client certificate and none is configured. On success,
+// the callback should return one and set |*out_x509| to |*out_pkey| to a leaf
+// certificate and private key, respectively, passing ownership. It should
+// return zero to send no certificate and -1 to fail or pause the handshake. If
+// the handshake is paused, |SSL_get_error| will return
+// |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// The callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate request.
+//
+// Use |SSL_CTX_set_cert_cb| instead. Configuring intermediate certificates with
+// this function is confusing. This callback may not be registered concurrently
+// with |SSL_CTX_set_cert_cb| or |SSL_set_cert_cb|.
+OPENSSL_EXPORT void SSL_CTX_set_client_cert_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, X509 **out_x509, EVP_PKEY **out_pkey));
+
+#define SSL_NOTHING SSL_ERROR_NONE
+#define SSL_WRITING SSL_ERROR_WANT_WRITE
+#define SSL_READING SSL_ERROR_WANT_READ
+
+// SSL_want returns one of the above values to determine what the most recent
+// operation on |ssl| was blocked on. Use |SSL_get_error| instead.
+OPENSSL_EXPORT int SSL_want(const SSL *ssl);
+
+#define SSL_want_read(ssl) (SSL_want(ssl) == SSL_READING)
+#define SSL_want_write(ssl) (SSL_want(ssl) == SSL_WRITING)
+
+ // SSL_get_finished writes up to |count| bytes of the Finished message sent by
+ // |ssl| to |buf|. It returns the total untruncated length or zero if none has
+ // been sent yet. At TLS 1.3 and later, it returns zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count);
+
+ // SSL_get_peer_finished writes up to |count| bytes of the Finished message
+ // received from |ssl|'s peer to |buf|. It returns the total untruncated length
+ // or zero if none has been received yet. At TLS 1.3 and later, it returns
+ // zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_peer_finished(const SSL *ssl, void *buf,
+                                            size_t count);
+
+// SSL_alert_type_string returns "!". Use |SSL_alert_type_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_type_string(int value);
+
+// SSL_alert_desc_string returns "!!". Use |SSL_alert_desc_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_desc_string(int value);
+
+// SSL_state_string returns "!!!!!!". Use |SSL_state_string_long| for a more
+// intelligible string.
+OPENSSL_EXPORT const char *SSL_state_string(const SSL *ssl);
+
+// SSL_TXT_* expand to strings.
+#define SSL_TXT_MEDIUM "MEDIUM"
+#define SSL_TXT_HIGH "HIGH"
+#define SSL_TXT_FIPS "FIPS"
+#define SSL_TXT_kRSA "kRSA"
+#define SSL_TXT_kDHE "kDHE"
+#define SSL_TXT_kEDH "kEDH"
+#define SSL_TXT_kECDHE "kECDHE"
+#define SSL_TXT_kEECDH "kEECDH"
+#define SSL_TXT_kPSK "kPSK"
+#define SSL_TXT_aRSA "aRSA"
+#define SSL_TXT_aECDSA "aECDSA"
+#define SSL_TXT_aPSK "aPSK"
+#define SSL_TXT_DH "DH"
+#define SSL_TXT_DHE "DHE"
+#define SSL_TXT_EDH "EDH"
+#define SSL_TXT_RSA "RSA"
+#define SSL_TXT_ECDH "ECDH"
+#define SSL_TXT_ECDHE "ECDHE"
+#define SSL_TXT_EECDH "EECDH"
+#define SSL_TXT_ECDSA "ECDSA"
+#define SSL_TXT_PSK "PSK"
+#define SSL_TXT_3DES "3DES"
+#define SSL_TXT_RC4 "RC4"
+#define SSL_TXT_AES128 "AES128"
+#define SSL_TXT_AES256 "AES256"
+#define SSL_TXT_AES "AES"
+#define SSL_TXT_AES_GCM "AESGCM"
+#define SSL_TXT_CHACHA20 "CHACHA20"
+#define SSL_TXT_MD5 "MD5"
+#define SSL_TXT_SHA1 "SHA1"
+#define SSL_TXT_SHA "SHA"
+#define SSL_TXT_SHA256 "SHA256"
+#define SSL_TXT_SHA384 "SHA384"
+#define SSL_TXT_SSLV3 "SSLv3"
+#define SSL_TXT_TLSV1 "TLSv1"
+#define SSL_TXT_TLSV1_1 "TLSv1.1"
+#define SSL_TXT_TLSV1_2 "TLSv1.2"
+#define SSL_TXT_TLSV1_3 "TLSv1.3"
+#define SSL_TXT_ALL "ALL"
+#define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
+
+typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
+
+// SSL_state returns |SSL_ST_INIT| if a handshake is in progress and |SSL_ST_OK|
+// otherwise.
+//
+// Use |SSL_is_init| instead.
+OPENSSL_EXPORT int SSL_state(const SSL *ssl);
+
+#define SSL_get_state(ssl) SSL_state(ssl)
+
+// SSL_set_shutdown causes |ssl| to behave as if the shutdown bitmask (see
+// |SSL_get_shutdown|) were |mode|. This may be used to skip sending or
+// receiving close_notify in |SSL_shutdown| by causing the implementation to
+// believe the events already happened.
+//
+// It is an error to use |SSL_set_shutdown| to unset a bit that has already been
+// set. Doing so will trigger an |assert| in debug builds and otherwise be
+// ignored.
+//
+// Use |SSL_CTX_set_quiet_shutdown| instead.
+OPENSSL_EXPORT void SSL_set_shutdown(SSL *ssl, int mode);
+
+// SSL_CTX_set_tmp_ecdh calls |SSL_CTX_set1_curves| with a one-element list
+// containing |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key);
+
+// SSL_set_tmp_ecdh calls |SSL_set1_curves| with a one-element list containing
+// |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key);
+
+// SSL_add_dir_cert_subjects_to_stack lists files in directory |dir|. It calls
+// |SSL_add_file_cert_subjects_to_stack| on each file and returns one on success
+// or zero on error. This function is only available from the libdecrepit
+// library.
+OPENSSL_EXPORT int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                      const char *dir);
+
+// SSL_set_verify_result calls |abort| unless |result| is |X509_V_OK|.
+//
+// TODO(davidben): Remove this function once it has been removed from
+// netty-tcnative.
+OPENSSL_EXPORT void SSL_set_verify_result(SSL *ssl, long result);
+
+// SSL_CTX_enable_tls_channel_id calls |SSL_CTX_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx);
+
+// SSL_enable_tls_channel_id calls |SSL_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_enable_tls_channel_id(SSL *ssl);
+
+// BIO_f_ssl returns a |BIO_METHOD| that can wrap an |SSL*| in a |BIO*|. Note
+// that this has quite different behaviour from the version in OpenSSL (notably
+// that it doesn't try to auto renegotiate).
+//
+// IMPORTANT: if you are not curl, don't use this.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_ssl(void);
+
+// BIO_set_ssl sets |ssl| as the underlying connection for |bio|, which must
+// have been created using |BIO_f_ssl|. If |take_owership| is true, |bio| will
+// call |SSL_free| on |ssl| when closed. It returns one on success or something
+// other than one on error.
+OPENSSL_EXPORT long BIO_set_ssl(BIO *bio, SSL *ssl, int take_owership);
+
+// SSL_CTX_set_ecdh_auto returns one.
+#define SSL_CTX_set_ecdh_auto(ctx, onoff) 1
+
+// SSL_set_ecdh_auto returns one.
+#define SSL_set_ecdh_auto(ssl, onoff) 1
+
+// SSL_get_session returns a non-owning pointer to |ssl|'s session. For
+// historical reasons, which session it returns depends on |ssl|'s state.
+//
+// Prior to the start of the initial handshake, it returns the session the
+// caller set with |SSL_set_session|. After the initial handshake has finished
+// and if no additional handshakes are in progress, it returns the currently
+// active session. Its behavior is undefined while a handshake is in progress.
+//
+// If trying to add new sessions to an external session cache, use
+// |SSL_CTX_sess_set_new_cb| instead. In particular, using the callback is
+// required as of TLS 1.3. For compatibility, this function will return an
+// unresumable session which may be cached, but will never be resumed.
+//
+// If querying properties of the connection, use APIs on the |SSL| object.
+OPENSSL_EXPORT SSL_SESSION *SSL_get_session(const SSL *ssl);
+
+// SSL_get0_session is an alias for |SSL_get_session|.
+#define SSL_get0_session SSL_get_session
+
+// SSL_get1_session acts like |SSL_get_session| but returns a new reference to
+// the session.
+OPENSSL_EXPORT SSL_SESSION *SSL_get1_session(SSL *ssl);
+
+#define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_SSL_DEFAULT 0
+
+// OPENSSL_init_ssl calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_ssl(uint64_t opts,
+                                    const OPENSSL_INIT_SETTINGS *settings);
+
+// The following constants are legacy aliases for RSA-PSS with rsaEncryption
+// keys. Use the new names instead.
+#define SSL_SIGN_RSA_PSS_SHA256 SSL_SIGN_RSA_PSS_RSAE_SHA256
+#define SSL_SIGN_RSA_PSS_SHA384 SSL_SIGN_RSA_PSS_RSAE_SHA384
+#define SSL_SIGN_RSA_PSS_SHA512 SSL_SIGN_RSA_PSS_RSAE_SHA512
+
+// SSL_set_tlsext_status_type configures a client to request OCSP stapling if
+// |type| is |TLSEXT_STATUSTYPE_ocsp| and disables it otherwise. It returns one
+// on success and zero if handshake configuration has already been shed.
+//
+// Use |SSL_enable_ocsp_stapling| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_type(SSL *ssl, int type);
+
+// SSL_get_tlsext_status_type returns |TLSEXT_STATUSTYPE_ocsp| if the client
+// requested OCSP stapling and |TLSEXT_STATUSTYPE_nothing| otherwise. On the
+// client, this reflects whether OCSP stapling was enabled via, e.g.,
+// |SSL_set_tlsext_status_type|. On the server, this is determined during the
+// handshake. It may be queried in callbacks set by |SSL_CTX_set_cert_cb|. The
+// result is undefined after the handshake completes.
+OPENSSL_EXPORT int SSL_get_tlsext_status_type(const SSL *ssl);
+
+// SSL_set_tlsext_status_ocsp_resp sets the OCSP response. It returns one on
+// success and zero on error. On success, |ssl| takes ownership of |resp|, which
+// must have been allocated by |OPENSSL_malloc|.
+//
+// Use |SSL_set_ocsp_response| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_ocsp_resp(SSL *ssl, uint8_t *resp,
+                                                   size_t resp_len);
+
+// SSL_get_tlsext_status_ocsp_resp sets |*out| to point to the OCSP response
+// from the server. It returns the length of the response. If there was no
+// response, it sets |*out| to NULL and returns zero.
+//
+// Use |SSL_get0_ocsp_response| instead.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT size_t SSL_get_tlsext_status_ocsp_resp(const SSL *ssl,
+                                                      const uint8_t **out);
+
+// SSL_CTX_set_tlsext_status_cb configures the legacy OpenSSL OCSP callback and
+// returns one. Though the type signature is the same, this callback has
+// different behavior for client and server connections:
+//
+// For clients, the callback is called after certificate verification. It should
+// return one for success, zero for a bad OCSP response, and a negative number
+// for internal error. Instead, handle this as part of certificate verification.
+// (Historically, OpenSSL verified certificates just before parsing stapled OCSP
+// responses, but BoringSSL fixes this ordering. All server credentials are
+// available during verification.)
+//
+// Do not use this callback as a server. It is provided for compatibility
+// purposes only. For servers, it is called to configure server credentials. It
+// should return |SSL_TLSEXT_ERR_OK| on success, |SSL_TLSEXT_ERR_NOACK| to
+// ignore OCSP requests, or |SSL_TLSEXT_ERR_ALERT_FATAL| on error. It is usually
+// used to fetch OCSP responses on demand, which is not ideal. Instead, treat
+// OCSP responses like other server credentials, such as certificates or SCT
+// lists. Configure, store, and refresh them eagerly. This avoids downtime if
+// the CA's OCSP responder is briefly offline.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx,
+                                                int (*callback)(SSL *ssl,
+                                                                void *arg));
+
+// SSL_CTX_set_tlsext_status_arg sets additional data for
+// |SSL_CTX_set_tlsext_status_cb|'s callback and returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg);
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define SSLerr(function, reason) \
+  ERR_put_error(ERR_LIB_SSL, 0, reason, __FILE__, __LINE__)
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+//
+// Although using either the CTRL values or their wrapper macros in #ifdefs is
+// still supported, the CTRL values may not be passed to |SSL_ctrl| and
+// |SSL_CTX_ctrl|. Call the functions (previously wrapper macros) instead.
+//
+// See PORTING.md in the BoringSSL source tree for a table of corresponding
+// functions.
+// https://boringssl.googlesource.com/boringssl/+/master/PORTING.md#Replacements-for-values
+
+#define DTLS_CTRL_GET_TIMEOUT doesnt_exist
+#define DTLS_CTRL_HANDLE_TIMEOUT doesnt_exist
+#define SSL_CTRL_CHAIN doesnt_exist
+#define SSL_CTRL_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_CLEAR_MODE doesnt_exist
+#define SSL_CTRL_CLEAR_OPTIONS doesnt_exist
+#define SSL_CTRL_EXTRA_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_GET_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_GET_CLIENT_CERT_TYPES doesnt_exist
+#define SSL_CTRL_GET_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_GET_NUM_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_GET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_GET_RI_SUPPORT doesnt_exist
+#define SSL_CTRL_GET_SERVER_TMP_KEY doesnt_exist
+#define SSL_CTRL_GET_SESSION_REUSED doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_MODE doesnt_exist
+#define SSL_CTRL_NEED_TMP_RSA doesnt_exist
+#define SSL_CTRL_OPTIONS doesnt_exist
+#define SSL_CTRL_SESS_NUMBER doesnt_exist
+#define SSL_CTRL_SET_CURVES doesnt_exist
+#define SSL_CTRL_SET_CURVES_LIST doesnt_exist
+#define SSL_CTRL_SET_ECDH_AUTO doesnt_exist
+#define SSL_CTRL_SET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_SET_MAX_SEND_FRAGMENT doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK_ARG doesnt_exist
+#define SSL_CTRL_SET_MTU doesnt_exist
+#define SSL_CTRL_SET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_HOSTNAME doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_DH doesnt_exist
+#define SSL_CTRL_SET_TMP_DH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA_CB doesnt_exist
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+
+
+#endif // !defined(BORINGSSL_PREFIX)
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SSL, SSL_free)
+BORINGSSL_MAKE_DELETER(SSL_CTX, SSL_CTX_free)
+BORINGSSL_MAKE_UP_REF(SSL_CTX, SSL_CTX_up_ref)
+BORINGSSL_MAKE_DELETER(SSL_SESSION, SSL_SESSION_free)
+BORINGSSL_MAKE_UP_REF(SSL_SESSION, SSL_SESSION_up_ref)
+
+enum class OpenRecordResult {
+  kOK,
+  kDiscard,
+  kIncompleteRecord,
+  kAlertCloseNotify,
+  kError,
+};
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// OpenRecord decrypts the first complete SSL record from |in| in-place, sets
+// |out| to the decrypted application data, and |out_record_len| to the length
+// of the encrypted record. Returns:
+// - kOK if an application-data record was successfully decrypted and verified.
+// - kDiscard if a record was sucessfully processed, but should be discarded.
+// - kIncompleteRecord if |in| did not contain a complete record.
+// - kAlertCloseNotify if a record was successfully processed but is a
+//   close_notify alert.
+// - kError if an error occurred or the record is invalid. |*out_alert| will be
+//   set to an alert to emit, or zero if no alert should be emitted.
+OPENSSL_EXPORT OpenRecordResult OpenRecord(SSL *ssl, Span<uint8_t> *out,
+                                           size_t *out_record_len,
+                                           uint8_t *out_alert,
+                                           Span<uint8_t> in);
+
+OPENSSL_EXPORT size_t SealRecordPrefixLen(const SSL *ssl, size_t plaintext_len);
+
+// SealRecordSuffixLen returns the length of the suffix written by |SealRecord|.
+//
+// |plaintext_len| must be equal to the size of the plaintext passed to
+// |SealRecord|.
+//
+// |plaintext_len| must not exceed |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The returned
+// suffix length will not exceed |SSL3_RT_MAX_ENCRYPTED_OVERHEAD|.
+OPENSSL_EXPORT size_t SealRecordSuffixLen(const SSL *ssl, size_t plaintext_len);
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// SealRecord encrypts the cleartext of |in| and scatters the resulting TLS
+// application data record between |out_prefix|, |out|, and |out_suffix|. It
+// returns true on success or false if an error occurred.
+//
+// The length of |out_prefix| must equal |SealRecordPrefixLen|. The length of
+// |out| must equal the length of |in|, which must not exceed
+// |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The length of |out_suffix| must equal
+// |SealRecordSuffixLen|.
+//
+// If enabled, |SealRecord| may perform TLS 1.0 CBC 1/n-1 record splitting.
+// |SealRecordPrefixLen| accounts for the required overhead if that is the case.
+//
+// |out| may equal |in| to encrypt in-place but may not otherwise alias.
+// |out_prefix| and |out_suffix| may not alias anything.
+OPENSSL_EXPORT bool SealRecord(SSL *ssl, Span<uint8_t> out_prefix,
+                               Span<uint8_t> out, Span<uint8_t> out_suffix,
+                               Span<const uint8_t> in);
+
+
+// *** EXPERIMENTAL — DO NOT USE WITHOUT CHECKING ***
+//
+// Split handshakes.
+//
+// Split handshakes allows the handshake part of a TLS connection to be
+// performed in a different process (or on a different machine) than the data
+// exchange. This only applies to servers.
+//
+// In the first part of a split handshake, an |SSL| (where the |SSL_CTX| has
+// been configured with |SSL_CTX_set_handoff_mode|) is used normally. Once the
+// ClientHello message has been received, the handshake will stop and
+// |SSL_get_error| will indicate |SSL_ERROR_HANDOFF|. At this point (and only
+// at this point), |SSL_serialize_handoff| can be called to write the “handoff”
+// state of the connection.
+//
+// Elsewhere, a fresh |SSL| can be used with |SSL_apply_handoff| to continue
+// the connection. The connection from the client is fed into this |SSL|, and
+// the handshake resumed. When the handshake stops again and |SSL_get_error|
+// indicates |SSL_ERROR_HANDBACK|, |SSL_serialize_handback| should be called to
+// serialize the state of the handshake again.
+//
+// Back at the first location, a fresh |SSL| can be used with
+// |SSL_apply_handback|. Then the client's connection can be processed mostly
+// as normal.
+//
+// Lastly, when a connection is in the handoff state, whether or not
+// |SSL_serialize_handoff| is called, |SSL_decline_handoff| will move it back
+// into a normal state where the connection can proceed without impact.
+//
+// WARNING: Currently only works with TLS 1.0–1.2.
+// WARNING: The serialisation formats are not yet stable: version skew may be
+//     fatal.
+// WARNING: The handback data contains sensitive key material and must be
+//     protected.
+// WARNING: Some calls on the final |SSL| will not work. Just as an example,
+//     calls like |SSL_get0_session_id_context| and |SSL_get_privatekey| won't
+//     work because the certificate used for handshaking isn't available.
+// WARNING: |SSL_apply_handoff| may trigger “msg” callback calls.
+
+OPENSSL_EXPORT void SSL_CTX_set_handoff_mode(SSL_CTX *ctx, bool on);
+OPENSSL_EXPORT void SSL_set_handoff_mode(SSL *SSL, bool on);
+OPENSSL_EXPORT bool SSL_serialize_handoff(const SSL *ssl, CBB *out,
+                                          SSL_CLIENT_HELLO *out_hello);
+OPENSSL_EXPORT bool SSL_decline_handoff(SSL *ssl);
+OPENSSL_EXPORT bool SSL_apply_handoff(SSL *ssl, Span<const uint8_t> handoff);
+OPENSSL_EXPORT bool SSL_serialize_handback(const SSL *ssl, CBB *out);
+OPENSSL_EXPORT bool SSL_apply_handback(SSL *ssl, Span<const uint8_t> handback);
+
+// SSL_get_traffic_secrets sets |*out_read_traffic_secret| and
+// |*out_write_traffic_secret| to reference the TLS 1.3 traffic secrets for
+// |ssl|. This function is only valid on TLS 1.3 connections that have
+// completed the handshake. It returns true on success and false on error.
+OPENSSL_EXPORT bool SSL_get_traffic_secrets(
+    const SSL *ssl, Span<const uint8_t> *out_read_traffic_secret,
+    Span<const uint8_t> *out_write_traffic_secret);
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif
+
+#define SSL_R_APP_DATA_IN_HANDSHAKE 100
+#define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 101
+#define SSL_R_BAD_ALERT 102
+#define SSL_R_BAD_CHANGE_CIPHER_SPEC 103
+#define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK 104
+#define SSL_R_BAD_DH_P_LENGTH 105
+#define SSL_R_BAD_DIGEST_LENGTH 106
+#define SSL_R_BAD_ECC_CERT 107
+#define SSL_R_BAD_ECPOINT 108
+#define SSL_R_BAD_HANDSHAKE_RECORD 109
+#define SSL_R_BAD_HELLO_REQUEST 110
+#define SSL_R_BAD_LENGTH 111
+#define SSL_R_BAD_PACKET_LENGTH 112
+#define SSL_R_BAD_RSA_ENCRYPT 113
+#define SSL_R_BAD_SIGNATURE 114
+#define SSL_R_BAD_SRTP_MKI_VALUE 115
+#define SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST 116
+#define SSL_R_BAD_SSL_FILETYPE 117
+#define SSL_R_BAD_WRITE_RETRY 118
+#define SSL_R_BIO_NOT_SET 119
+#define SSL_R_BN_LIB 120
+#define SSL_R_BUFFER_TOO_SMALL 121
+#define SSL_R_CA_DN_LENGTH_MISMATCH 122
+#define SSL_R_CA_DN_TOO_LONG 123
+#define SSL_R_CCS_RECEIVED_EARLY 124
+#define SSL_R_CERTIFICATE_VERIFY_FAILED 125
+#define SSL_R_CERT_CB_ERROR 126
+#define SSL_R_CERT_LENGTH_MISMATCH 127
+#define SSL_R_CHANNEL_ID_NOT_P256 128
+#define SSL_R_CHANNEL_ID_SIGNATURE_INVALID 129
+#define SSL_R_CIPHER_OR_HASH_UNAVAILABLE 130
+#define SSL_R_CLIENTHELLO_PARSE_FAILED 131
+#define SSL_R_CLIENTHELLO_TLSEXT 132
+#define SSL_R_CONNECTION_REJECTED 133
+#define SSL_R_CONNECTION_TYPE_NOT_SET 134
+#define SSL_R_CUSTOM_EXTENSION_ERROR 135
+#define SSL_R_DATA_LENGTH_TOO_LONG 136
+#define SSL_R_DECODE_ERROR 137
+#define SSL_R_DECRYPTION_FAILED 138
+#define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC 139
+#define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG 140
+#define SSL_R_DH_P_TOO_LONG 141
+#define SSL_R_DIGEST_CHECK_FAILED 142
+#define SSL_R_DTLS_MESSAGE_TOO_BIG 143
+#define SSL_R_ECC_CERT_NOT_FOR_SIGNING 144
+#define SSL_R_EMS_STATE_INCONSISTENT 145
+#define SSL_R_ENCRYPTED_LENGTH_TOO_LONG 146
+#define SSL_R_ERROR_ADDING_EXTENSION 147
+#define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST 148
+#define SSL_R_ERROR_PARSING_EXTENSION 149
+#define SSL_R_EXCESSIVE_MESSAGE_SIZE 150
+#define SSL_R_EXTRA_DATA_IN_MESSAGE 151
+#define SSL_R_FRAGMENT_MISMATCH 152
+#define SSL_R_GOT_NEXT_PROTO_WITHOUT_EXTENSION 153
+#define SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO 154
+#define SSL_R_HTTPS_PROXY_REQUEST 155
+#define SSL_R_HTTP_REQUEST 156
+#define SSL_R_INAPPROPRIATE_FALLBACK 157
+#define SSL_R_INVALID_COMMAND 158
+#define SSL_R_INVALID_MESSAGE 159
+#define SSL_R_INVALID_SSL_SESSION 160
+#define SSL_R_INVALID_TICKET_KEYS_LENGTH 161
+#define SSL_R_LENGTH_MISMATCH 162
+#define SSL_R_MISSING_EXTENSION 164
+#define SSL_R_MISSING_RSA_CERTIFICATE 165
+#define SSL_R_MISSING_TMP_DH_KEY 166
+#define SSL_R_MISSING_TMP_ECDH_KEY 167
+#define SSL_R_MIXED_SPECIAL_OPERATOR_WITH_GROUPS 168
+#define SSL_R_MTU_TOO_SMALL 169
+#define SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN 170
+#define SSL_R_NESTED_GROUP 171
+#define SSL_R_NO_CERTIFICATES_RETURNED 172
+#define SSL_R_NO_CERTIFICATE_ASSIGNED 173
+#define SSL_R_NO_CERTIFICATE_SET 174
+#define SSL_R_NO_CIPHERS_AVAILABLE 175
+#define SSL_R_NO_CIPHERS_PASSED 176
+#define SSL_R_NO_CIPHER_MATCH 177
+#define SSL_R_NO_COMPRESSION_SPECIFIED 178
+#define SSL_R_NO_METHOD_SPECIFIED 179
+#define SSL_R_NO_P256_SUPPORT 180
+#define SSL_R_NO_PRIVATE_KEY_ASSIGNED 181
+#define SSL_R_NO_RENEGOTIATION 182
+#define SSL_R_NO_REQUIRED_DIGEST 183
+#define SSL_R_NO_SHARED_CIPHER 184
+#define SSL_R_NULL_SSL_CTX 185
+#define SSL_R_NULL_SSL_METHOD_PASSED 186
+#define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED 187
+#define SSL_R_OLD_SESSION_VERSION_NOT_RETURNED 188
+#define SSL_R_OUTPUT_ALIASES_INPUT 189
+#define SSL_R_PARSE_TLSEXT 190
+#define SSL_R_PATH_TOO_LONG 191
+#define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE 192
+#define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE 193
+#define SSL_R_PROTOCOL_IS_SHUTDOWN 194
+#define SSL_R_PSK_IDENTITY_NOT_FOUND 195
+#define SSL_R_PSK_NO_CLIENT_CB 196
+#define SSL_R_PSK_NO_SERVER_CB 197
+#define SSL_R_READ_TIMEOUT_EXPIRED 198
+#define SSL_R_RECORD_LENGTH_MISMATCH 199
+#define SSL_R_RECORD_TOO_LARGE 200
+#define SSL_R_RENEGOTIATION_ENCODING_ERR 201
+#define SSL_R_RENEGOTIATION_MISMATCH 202
+#define SSL_R_REQUIRED_CIPHER_MISSING 203
+#define SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION 204
+#define SSL_R_RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION 205
+#define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING 206
+#define SSL_R_SERVERHELLO_TLSEXT 207
+#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED 208
+#define SSL_R_SESSION_MAY_NOT_BE_CREATED 209
+#define SSL_R_SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER 210
+#define SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES 211
+#define SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE 212
+#define SSL_R_SSL3_EXT_INVALID_SERVERNAME 213
+#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION 214
+#define SSL_R_SSL_HANDSHAKE_FAILURE 215
+#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG 216
+#define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 217
+#define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG 218
+#define SSL_R_TOO_MANY_EMPTY_FRAGMENTS 219
+#define SSL_R_TOO_MANY_WARNING_ALERTS 220
+#define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS 221
+#define SSL_R_UNEXPECTED_EXTENSION 222
+#define SSL_R_UNEXPECTED_MESSAGE 223
+#define SSL_R_UNEXPECTED_OPERATOR_IN_GROUP 224
+#define SSL_R_UNEXPECTED_RECORD 225
+#define SSL_R_UNINITIALIZED 226
+#define SSL_R_UNKNOWN_ALERT_TYPE 227
+#define SSL_R_UNKNOWN_CERTIFICATE_TYPE 228
+#define SSL_R_UNKNOWN_CIPHER_RETURNED 229
+#define SSL_R_UNKNOWN_CIPHER_TYPE 230
+#define SSL_R_UNKNOWN_DIGEST 231
+#define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE 232
+#define SSL_R_UNKNOWN_PROTOCOL 233
+#define SSL_R_UNKNOWN_SSL_VERSION 234
+#define SSL_R_UNKNOWN_STATE 235
+#define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED 236
+#define SSL_R_UNSUPPORTED_CIPHER 237
+#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM 238
+#define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE 239
+#define SSL_R_UNSUPPORTED_PROTOCOL 240
+#define SSL_R_WRONG_CERTIFICATE_TYPE 241
+#define SSL_R_WRONG_CIPHER_RETURNED 242
+#define SSL_R_WRONG_CURVE 243
+#define SSL_R_WRONG_MESSAGE_TYPE 244
+#define SSL_R_WRONG_SIGNATURE_TYPE 245
+#define SSL_R_WRONG_SSL_VERSION 246
+#define SSL_R_WRONG_VERSION_NUMBER 247
+#define SSL_R_X509_LIB 248
+#define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS 249
+#define SSL_R_SHUTDOWN_WHILE_IN_INIT 250
+#define SSL_R_INVALID_OUTER_RECORD_TYPE 251
+#define SSL_R_UNSUPPORTED_PROTOCOL_FOR_CUSTOM_KEY 252
+#define SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS 253
+#define SSL_R_DOWNGRADE_DETECTED 254
+#define SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE 255
+#define SSL_R_INVALID_COMPRESSION_LIST 256
+#define SSL_R_DUPLICATE_EXTENSION 257
+#define SSL_R_MISSING_KEY_SHARE 258
+#define SSL_R_INVALID_ALPN_PROTOCOL 259
+#define SSL_R_TOO_MANY_KEY_UPDATES 260
+#define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG 261
+#define SSL_R_NO_CIPHERS_SPECIFIED 262
+#define SSL_R_RENEGOTIATION_EMS_MISMATCH 263
+#define SSL_R_DUPLICATE_KEY_SHARE 264
+#define SSL_R_NO_GROUPS_SPECIFIED 265
+#define SSL_R_NO_SHARED_GROUP 266
+#define SSL_R_PRE_SHARED_KEY_MUST_BE_LAST 267
+#define SSL_R_OLD_SESSION_PRF_HASH_MISMATCH 268
+#define SSL_R_INVALID_SCT_LIST 269
+#define SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA 270
+#define SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH 271
+#define SSL_R_CANNOT_PARSE_LEAF_CERT 272
+#define SSL_R_SERVER_CERT_CHANGED 273
+#define SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH 274
+#define SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD 275
+#define SSL_R_TICKET_ENCRYPTION_FAILED 276
+#define SSL_R_ALPN_MISMATCH_ON_EARLY_DATA 277
+#define SSL_R_WRONG_VERSION_ON_EARLY_DATA 278
+#define SSL_R_UNEXPECTED_EXTENSION_ON_EARLY_DATA 279
+#define SSL_R_NO_SUPPORTED_VERSIONS_ENABLED 280
+#define SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE 281
+#define SSL_R_EMPTY_HELLO_RETRY_REQUEST 282
+#define SSL_R_EARLY_DATA_NOT_IN_USE 283
+#define SSL_R_HANDSHAKE_NOT_COMPLETE 284
+#define SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI 285
+#define SSL_R_SERVER_ECHOED_INVALID_SESSION_ID 286
+#define SSL_R_PRIVATE_KEY_OPERATION_FAILED 287
+#define SSL_R_SECOND_SERVERHELLO_VERSION_MISMATCH 288
+#define SSL_R_OCSP_CB_ERROR 289
+#define SSL_R_SSL_SESSION_ID_TOO_LONG 290
+#define SSL_R_APPLICATION_DATA_ON_SHUTDOWN 291
+#define SSL_R_CERT_DECOMPRESSION_FAILED 292
+#define SSL_R_UNCOMPRESSED_CERT_TOO_LARGE 293
+#define SSL_R_UNKNOWN_CERT_COMPRESSION_ALG 294
+#define SSL_R_INVALID_SIGNATURE_ALGORITHM 295
+#define SSL_R_DUPLICATE_SIGNATURE_ALGORITHM 296
+#define SSL_R_TLS13_DOWNGRADE 297
+#define SSL_R_QUIC_INTERNAL_ERROR 298
+#define SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED 299
+#define SSL_R_TOO_MUCH_READ_EARLY_DATA 300
+#define SSL_R_INVALID_DELEGATED_CREDENTIAL 301
+#define SSL_R_KEY_USAGE_BIT_INCORRECT 302
+#define SSL_R_INCONSISTENT_CLIENT_HELLO 303
+#define SSL_R_SSLV3_ALERT_CLOSE_NOTIFY 1000
+#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE 1010
+#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC 1020
+#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED 1021
+#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW 1022
+#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE 1030
+#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE 1040
+#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE 1041
+#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE 1042
+#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE 1043
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED 1044
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED 1045
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN 1046
+#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER 1047
+#define SSL_R_TLSV1_ALERT_UNKNOWN_CA 1048
+#define SSL_R_TLSV1_ALERT_ACCESS_DENIED 1049
+#define SSL_R_TLSV1_ALERT_DECODE_ERROR 1050
+#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR 1051
+#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION 1060
+#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION 1070
+#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY 1071
+#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR 1080
+#define SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK 1086
+#define SSL_R_TLSV1_ALERT_USER_CANCELLED 1090
+#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION 1100
+#define SSL_R_TLSV1_UNSUPPORTED_EXTENSION 1110
+#define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE 1111
+#define SSL_R_TLSV1_UNRECOGNIZED_NAME 1112
+#define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE 1113
+#define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE 1114
+#define SSL_R_TLSV1_UNKNOWN_PSK_IDENTITY 1115
+#define SSL_R_TLSV1_CERTIFICATE_REQUIRED 1116
+
+#endif  // OPENSSL_HEADER_SSL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.back
new file mode 100644
index 0000000..042ccb5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.back	
@@ -0,0 +1,5039 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_SSL_H
+#define OPENSSL_HEADER_SSL_H
+
+#include <openssl/base.h>
+
+#include <openssl/bio.h>
+#include <openssl/buf.h>
+#include <openssl/pem.h>
+#include <openssl/span.h>
+#include <openssl/ssl3.h>
+#include <openssl/thread.h>
+#include <openssl/tls1.h>
+#include <openssl/x509.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <sys/time.h>
+#endif
+
+// NGINX needs this #include. Consider revisiting this after NGINX 1.14.0 has
+// been out for a year or so (assuming that they fix it in that release.) See
+// https://boringssl-review.googlesource.com/c/boringssl/+/21664.
+#include <openssl/hmac.h>
+
+// Forward-declare struct timeval. On Windows, it is defined in winsock2.h and
+// Windows headers define too many macros to be included in public headers.
+// However, only a forward declaration is needed.
+struct timeval;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SSL implementation.
+
+
+// SSL contexts.
+//
+// |SSL_CTX| objects manage shared state and configuration between multiple TLS
+// or DTLS connections. Whether the connections are TLS or DTLS is selected by
+// an |SSL_METHOD| on creation.
+//
+// |SSL_CTX| are reference-counted and may be shared by connections across
+// multiple threads. Once shared, functions which change the |SSL_CTX|'s
+// configuration may not be used.
+
+// TLS_method is the |SSL_METHOD| used for TLS connections.
+OPENSSL_EXPORT const SSL_METHOD *TLS_method(void);
+
+// DTLS_method is the |SSL_METHOD| used for DTLS connections.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_method(void);
+
+// TLS_with_buffers_method is like |TLS_method|, but avoids all use of
+// crypto/x509. All client connections created with |TLS_with_buffers_method|
+// will fail unless a certificate verifier is installed with
+// |SSL_set_custom_verify| or |SSL_CTX_set_custom_verify|.
+OPENSSL_EXPORT const SSL_METHOD *TLS_with_buffers_method(void);
+
+// DTLS_with_buffers_method is like |DTLS_method|, but avoids all use of
+// crypto/x509.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_with_buffers_method(void);
+
+// SSL_CTX_new returns a newly-allocated |SSL_CTX| with default settings or NULL
+// on error.
+OPENSSL_EXPORT SSL_CTX *SSL_CTX_new(const SSL_METHOD *method);
+
+// SSL_CTX_up_ref increments the reference count of |ctx|. It returns one.
+OPENSSL_EXPORT int SSL_CTX_up_ref(SSL_CTX *ctx);
+
+// SSL_CTX_free releases memory associated with |ctx|.
+OPENSSL_EXPORT void SSL_CTX_free(SSL_CTX *ctx);
+
+
+// SSL connections.
+//
+// An |SSL| object represents a single TLS or DTLS connection. Although the
+// shared |SSL_CTX| is thread-safe, an |SSL| is not thread-safe and may only be
+// used on one thread at a time.
+
+// SSL_new returns a newly-allocated |SSL| using |ctx| or NULL on error. The new
+// connection inherits settings from |ctx| at the time of creation. Settings may
+// also be individually configured on the connection.
+//
+// On creation, an |SSL| is not configured to be either a client or server. Call
+// |SSL_set_connect_state| or |SSL_set_accept_state| to set this.
+OPENSSL_EXPORT SSL *SSL_new(SSL_CTX *ctx);
+
+// SSL_free releases memory associated with |ssl|.
+OPENSSL_EXPORT void SSL_free(SSL *ssl);
+
+// SSL_get_SSL_CTX returns the |SSL_CTX| associated with |ssl|. If
+// |SSL_set_SSL_CTX| is called, it returns the new |SSL_CTX|, not the initial
+// one.
+OPENSSL_EXPORT SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
+
+// SSL_set_connect_state configures |ssl| to be a client.
+OPENSSL_EXPORT void SSL_set_connect_state(SSL *ssl);
+
+// SSL_set_accept_state configures |ssl| to be a server.
+OPENSSL_EXPORT void SSL_set_accept_state(SSL *ssl);
+
+// SSL_is_server returns one if |ssl| is configured as a server and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_is_server(const SSL *ssl);
+
+// SSL_is_dtls returns one if |ssl| is a DTLS connection and zero otherwise.
+OPENSSL_EXPORT int SSL_is_dtls(const SSL *ssl);
+
+// SSL_set_bio configures |ssl| to read from |rbio| and write to |wbio|. |ssl|
+// takes ownership of the two |BIO|s. If |rbio| and |wbio| are the same, |ssl|
+// only takes ownership of one reference.
+//
+// In DTLS, |rbio| must be non-blocking to properly handle timeouts and
+// retransmits.
+//
+// If |rbio| is the same as the currently configured |BIO| for reading, that
+// side is left untouched and is not freed.
+//
+// If |wbio| is the same as the currently configured |BIO| for writing AND |ssl|
+// is not currently configured to read from and write to the same |BIO|, that
+// side is left untouched and is not freed. This asymmetry is present for
+// historical reasons.
+//
+// Due to the very complex historical behavior of this function, calling this
+// function if |ssl| already has |BIO|s configured is deprecated. Prefer
+// |SSL_set0_rbio| and |SSL_set0_wbio| instead.
+OPENSSL_EXPORT void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio);
+
+// SSL_set0_rbio configures |ssl| to write to |rbio|. It takes ownership of
+// |rbio|.
+//
+// Note that, although this function and |SSL_set0_wbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_rbio(SSL *ssl, BIO *rbio);
+
+// SSL_set0_wbio configures |ssl| to write to |wbio|. It takes ownership of
+// |wbio|.
+//
+// Note that, although this function and |SSL_set0_rbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_wbio(SSL *ssl, BIO *wbio);
+
+// SSL_get_rbio returns the |BIO| that |ssl| reads from.
+OPENSSL_EXPORT BIO *SSL_get_rbio(const SSL *ssl);
+
+// SSL_get_wbio returns the |BIO| that |ssl| writes to.
+OPENSSL_EXPORT BIO *SSL_get_wbio(const SSL *ssl);
+
+// SSL_get_fd calls |SSL_get_rfd|.
+OPENSSL_EXPORT int SSL_get_fd(const SSL *ssl);
+
+// SSL_get_rfd returns the file descriptor that |ssl| is configured to read
+// from. If |ssl|'s read |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_rfd(const SSL *ssl);
+
+// SSL_get_wfd returns the file descriptor that |ssl| is configured to write
+// to. If |ssl|'s write |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_wfd(const SSL *ssl);
+
+// SSL_set_fd configures |ssl| to read from and write to |fd|. It returns one
+// on success and zero on allocation error. The caller retains ownership of
+// |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_fd(SSL *ssl, int fd);
+
+// SSL_set_rfd configures |ssl| to read from |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_rfd(SSL *ssl, int fd);
+
+// SSL_set_wfd configures |ssl| to write to |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_wfd(SSL *ssl, int fd);
+
+// SSL_do_handshake continues the current handshake. If there is none or the
+// handshake has completed or False Started, it returns one. Otherwise, it
+// returns <= 0. The caller should pass the value into |SSL_get_error| to
+// determine how to proceed.
+//
+// In DTLS, the caller must drive retransmissions. Whenever |SSL_get_error|
+// signals |SSL_ERROR_WANT_READ|, use |DTLSv1_get_timeout| to determine the
+// current timeout. If it expires before the next retry, call
+// |DTLSv1_handle_timeout|. Note that DTLS handshake retransmissions use fresh
+// sequence numbers, so it is not sufficient to replay packets at the transport.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_do_handshake(SSL *ssl);
+
+// SSL_connect configures |ssl| as a client, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_connect(SSL *ssl);
+
+// SSL_accept configures |ssl| as a server, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_accept(SSL *ssl);
+
+// SSL_read reads up to |num| bytes from |ssl| into |buf|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes read. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_read(SSL *ssl, void *buf, int num);
+
+// SSL_peek behaves like |SSL_read| but does not consume any bytes returned.
+OPENSSL_EXPORT int SSL_peek(SSL *ssl, void *buf, int num);
+
+// SSL_pending returns the number of bytes available in |ssl|. It does not read
+// from the transport.
+OPENSSL_EXPORT int SSL_pending(const SSL *ssl);
+
+// SSL_write writes up to |num| bytes from |buf| into |ssl|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes written. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// In TLS, a non-blocking |SSL_write| differs from non-blocking |write| in that
+// a failed |SSL_write| still commits to the data passed in. When retrying, the
+// caller must supply the original write buffer (or a larger one containing the
+// original as a prefix). By default, retries will fail if they also do not
+// reuse the same |buf| pointer. This may be relaxed with
+// |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER|, but the buffer contents still must be
+// unchanged.
+//
+// By default, in TLS, |SSL_write| will not return success until all |num| bytes
+// are written. This may be relaxed with |SSL_MODE_ENABLE_PARTIAL_WRITE|. It
+// allows |SSL_write| to complete with a partial result when only part of the
+// input was written in a single record.
+//
+// In DTLS, neither |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER| and
+// |SSL_MODE_ENABLE_PARTIAL_WRITE| do anything. The caller may retry with a
+// different buffer freely. A single call to |SSL_write| only ever writes a
+// single record in a single packet, so |num| must be at most
+// |SSL3_RT_MAX_PLAIN_LENGTH|.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_write(SSL *ssl, const void *buf, int num);
+
+// SSL_KEY_UPDATE_REQUESTED indicates that the peer should reply to a KeyUpdate
+// message with its own, thus updating traffic secrets for both directions on
+// the connection.
+#define SSL_KEY_UPDATE_REQUESTED 1
+
+// SSL_KEY_UPDATE_NOT_REQUESTED indicates that the peer should not reply with
+// it's own KeyUpdate message.
+#define SSL_KEY_UPDATE_NOT_REQUESTED 0
+
+// SSL_key_update queues a TLS 1.3 KeyUpdate message to be sent on |ssl|
+// if one is not already queued. The |request_type| argument must one of the
+// |SSL_KEY_UPDATE_*| values. This function requires that |ssl| have completed a
+// TLS >= 1.3 handshake. It returns one on success or zero on error.
+//
+// Note that this function does not _send_ the message itself. The next call to
+// |SSL_write| will cause the message to be sent. |SSL_write| may be called with
+// a zero length to flush a KeyUpdate message when no application data is
+// pending.
+OPENSSL_EXPORT int SSL_key_update(SSL *ssl, int request_type);
+
+// SSL_shutdown shuts down |ssl|. It runs in two stages. First, it sends
+// close_notify and returns zero or one on success or -1 on failure. Zero
+// indicates that close_notify was sent, but not received, and one additionally
+// indicates that the peer's close_notify had already been received.
+//
+// To then wait for the peer's close_notify, run |SSL_shutdown| to completion a
+// second time. This returns 1 on success and -1 on failure. Application data
+// is considered a fatal error at this point. To process or discard it, read
+// until close_notify with |SSL_read| instead.
+//
+// In both cases, on failure, pass the return value into |SSL_get_error| to
+// determine how to proceed.
+//
+// Most callers should stop at the first stage. Reading for close_notify is
+// primarily used for uncommon protocols where the underlying transport is
+// reused after TLS completes. Additionally, DTLS uses an unordered transport
+// and is unordered, so the second stage is a no-op in DTLS.
+OPENSSL_EXPORT int SSL_shutdown(SSL *ssl);
+
+// SSL_CTX_set_quiet_shutdown sets quiet shutdown on |ctx| to |mode|. If
+// enabled, |SSL_shutdown| will not send a close_notify alert or wait for one
+// from the peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ctx|.
+OPENSSL_EXPORT int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
+
+// SSL_set_quiet_shutdown sets quiet shutdown on |ssl| to |mode|. If enabled,
+// |SSL_shutdown| will not send a close_notify alert or wait for one from the
+// peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_set_quiet_shutdown(SSL *ssl, int mode);
+
+// SSL_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ssl|.
+OPENSSL_EXPORT int SSL_get_quiet_shutdown(const SSL *ssl);
+
+// SSL_get_error returns a |SSL_ERROR_*| value for the most recent operation on
+// |ssl|. It should be called after an operation failed to determine whether the
+// error was fatal and, if not, when to retry.
+OPENSSL_EXPORT int SSL_get_error(const SSL *ssl, int ret_code);
+
+// SSL_ERROR_NONE indicates the operation succeeded.
+#define SSL_ERROR_NONE 0
+
+// SSL_ERROR_SSL indicates the operation failed within the library. The caller
+// may inspect the error queue for more information.
+#define SSL_ERROR_SSL 1
+
+// SSL_ERROR_WANT_READ indicates the operation failed attempting to read from
+// the transport. The caller may retry the operation when the transport is ready
+// for reading.
+//
+// If signaled by a DTLS handshake, the caller must also call
+// |DTLSv1_get_timeout| and |DTLSv1_handle_timeout| as appropriate. See
+// |SSL_do_handshake|.
+#define SSL_ERROR_WANT_READ 2
+
+// SSL_ERROR_WANT_WRITE indicates the operation failed attempting to write to
+// the transport. The caller may retry the operation when the transport is ready
+// for writing.
+#define SSL_ERROR_WANT_WRITE 3
+
+// SSL_ERROR_WANT_X509_LOOKUP indicates the operation failed in calling the
+// |cert_cb| or |client_cert_cb|. The caller may retry the operation when the
+// callback is ready to return a certificate or one has been configured
+// externally.
+//
+// See also |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb|.
+#define SSL_ERROR_WANT_X509_LOOKUP 4
+
+// SSL_ERROR_SYSCALL indicates the operation failed externally to the library.
+// The caller should consult the system-specific error mechanism. This is
+// typically |errno| but may be something custom if using a custom |BIO|. It
+// may also be signaled if the transport returned EOF, in which case the
+// operation's return value will be zero.
+#define SSL_ERROR_SYSCALL 5
+
+// SSL_ERROR_ZERO_RETURN indicates the operation failed because the connection
+// was cleanly shut down with a close_notify alert.
+#define SSL_ERROR_ZERO_RETURN 6
+
+// SSL_ERROR_WANT_CONNECT indicates the operation failed attempting to connect
+// the transport (the |BIO| signaled |BIO_RR_CONNECT|). The caller may retry the
+// operation when the transport is ready.
+#define SSL_ERROR_WANT_CONNECT 7
+
+// SSL_ERROR_WANT_ACCEPT indicates the operation failed attempting to accept a
+// connection from the transport (the |BIO| signaled |BIO_RR_ACCEPT|). The
+// caller may retry the operation when the transport is ready.
+//
+// TODO(davidben): Remove this. It's used by accept BIOs which are bizarre.
+#define SSL_ERROR_WANT_ACCEPT 8
+
+// SSL_ERROR_WANT_CHANNEL_ID_LOOKUP indicates the operation failed looking up
+// the Channel ID key. The caller may retry the operation when |channel_id_cb|
+// is ready to return a key or one has been configured with
+// |SSL_set1_tls_channel_id|.
+//
+// See also |SSL_CTX_set_channel_id_cb|.
+#define SSL_ERROR_WANT_CHANNEL_ID_LOOKUP 9
+
+// SSL_ERROR_PENDING_SESSION indicates the operation failed because the session
+// lookup callback indicated the session was unavailable. The caller may retry
+// the operation when lookup has completed.
+//
+// See also |SSL_CTX_sess_set_get_cb| and |SSL_magic_pending_session_ptr|.
+#define SSL_ERROR_PENDING_SESSION 11
+
+// SSL_ERROR_PENDING_CERTIFICATE indicates the operation failed because the
+// early callback indicated certificate lookup was incomplete. The caller may
+// retry the operation when lookup has completed.
+//
+// See also |SSL_CTX_set_select_certificate_cb|.
+#define SSL_ERROR_PENDING_CERTIFICATE 12
+
+// SSL_ERROR_WANT_PRIVATE_KEY_OPERATION indicates the operation failed because
+// a private key operation was unfinished. The caller may retry the operation
+// when the private key operation is complete.
+//
+// See also |SSL_set_private_key_method| and
+// |SSL_CTX_set_private_key_method|.
+#define SSL_ERROR_WANT_PRIVATE_KEY_OPERATION 13
+
+// SSL_ERROR_PENDING_TICKET indicates that a ticket decryption is pending. The
+// caller may retry the operation when the decryption is ready.
+//
+// See also |SSL_CTX_set_ticket_aead_method|.
+#define SSL_ERROR_PENDING_TICKET 14
+
+// SSL_ERROR_EARLY_DATA_REJECTED indicates that early data was rejected. The
+// caller should treat this as a connection failure and retry any operations
+// associated with the rejected early data. |SSL_reset_early_data_reject| may be
+// used to reuse the underlying connection for the retry.
+#define SSL_ERROR_EARLY_DATA_REJECTED 15
+
+// SSL_ERROR_WANT_CERTIFICATE_VERIFY indicates the operation failed because
+// certificate verification was incomplete. The caller may retry the operation
+// when certificate verification is complete.
+//
+// See also |SSL_CTX_set_custom_verify|.
+#define SSL_ERROR_WANT_CERTIFICATE_VERIFY 16
+
+#define SSL_ERROR_HANDOFF 17
+#define SSL_ERROR_HANDBACK 18
+
+// SSL_ERROR_WANT_RENEGOTIATE indicates the operation is pending a response to
+// a renegotiation request from the server. The caller may call
+// |SSL_renegotiate| to schedule a renegotiation and retry the operation.
+//
+// See also |ssl_renegotiate_explicit|.
+#define SSL_ERROR_WANT_RENEGOTIATE 19
+
+// SSL_error_description returns a string representation of |err|, where |err|
+// is one of the |SSL_ERROR_*| constants returned by |SSL_get_error|, or NULL
+// if the value is unrecognized.
+OPENSSL_EXPORT const char *SSL_error_description(int err);
+
+// SSL_set_mtu sets the |ssl|'s MTU in DTLS to |mtu|. It returns one on success
+// and zero on failure.
+OPENSSL_EXPORT int SSL_set_mtu(SSL *ssl, unsigned mtu);
+
+// DTLSv1_set_initial_timeout_duration sets the initial duration for a DTLS
+// handshake timeout.
+//
+// This duration overrides the default of 1 second, which is the strong
+// recommendation of RFC 6347 (see section 4.2.4.1). However, there may exist
+// situations where a shorter timeout would be beneficial, such as for
+// time-sensitive applications.
+OPENSSL_EXPORT void DTLSv1_set_initial_timeout_duration(SSL *ssl,
+                                                        unsigned duration_ms);
+
+// DTLSv1_get_timeout queries the next DTLS handshake timeout. If there is a
+// timeout in progress, it sets |*out| to the time remaining and returns one.
+// Otherwise, it returns zero.
+//
+// When the timeout expires, call |DTLSv1_handle_timeout| to handle the
+// retransmit behavior.
+//
+// NOTE: This function must be queried again whenever the handshake state
+// machine changes, including when |DTLSv1_handle_timeout| is called.
+OPENSSL_EXPORT int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out);
+
+// DTLSv1_handle_timeout is called when a DTLS handshake timeout expires. If no
+// timeout had expired, it returns 0. Otherwise, it retransmits the previous
+// flight of handshake messages and returns 1. If too many timeouts had expired
+// without progress or an error occurs, it returns -1.
+//
+// The caller's external timer should be compatible with the one |ssl| queries
+// within some fudge factor. Otherwise, the call will be a no-op, but
+// |DTLSv1_get_timeout| will return an updated timeout.
+//
+// If the function returns -1, checking if |SSL_get_error| returns
+// |SSL_ERROR_WANT_WRITE| may be used to determine if the retransmit failed due
+// to a non-fatal error at the write |BIO|. However, the operation may not be
+// retried until the next timeout fires.
+//
+// WARNING: This function breaks the usual return value convention.
+//
+// TODO(davidben): This |SSL_ERROR_WANT_WRITE| behavior is kind of bizarre.
+OPENSSL_EXPORT int DTLSv1_handle_timeout(SSL *ssl);
+
+
+// Protocol versions.
+
+#define DTLS1_VERSION_MAJOR 0xfe
+#define SSL3_VERSION_MAJOR 0x03
+
+#define SSL3_VERSION 0x0300
+#define TLS1_VERSION 0x0301
+#define TLS1_1_VERSION 0x0302
+#define TLS1_2_VERSION 0x0303
+#define TLS1_3_VERSION 0x0304
+
+#define DTLS1_VERSION 0xfeff
+#define DTLS1_2_VERSION 0xfefd
+
+// SSL_CTX_set_min_proto_version sets the minimum protocol version for |ctx| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_min_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_set_max_proto_version sets the maximum protocol version for |ctx| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_max_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_get_min_proto_version returns the minimum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_min_proto_version(const SSL_CTX *ctx);
+
+// SSL_CTX_get_max_proto_version returns the maximum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_max_proto_version(const SSL_CTX *ctx);
+
+// SSL_set_min_proto_version sets the minimum protocol version for |ssl| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_min_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_set_max_proto_version sets the maximum protocol version for |ssl| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_max_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_get_min_proto_version returns the minimum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_min_proto_version(const SSL *ssl);
+
+// SSL_get_max_proto_version returns the maximum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_max_proto_version(const SSL *ssl);
+
+// SSL_version returns the TLS or DTLS protocol version used by |ssl|, which is
+// one of the |*_VERSION| values. (E.g. |TLS1_2_VERSION|.) Before the version
+// is negotiated, the result is undefined.
+OPENSSL_EXPORT int SSL_version(const SSL *ssl);
+
+
+// Options.
+//
+// Options configure protocol behavior.
+
+// SSL_OP_NO_QUERY_MTU, in DTLS, disables querying the MTU from the underlying
+// |BIO|. Instead, the MTU is configured with |SSL_set_mtu|.
+#define SSL_OP_NO_QUERY_MTU 0x00001000L
+
+// SSL_OP_NO_TICKET disables session ticket support (RFC 5077).
+#define SSL_OP_NO_TICKET 0x00004000L
+
+// SSL_OP_CIPHER_SERVER_PREFERENCE configures servers to select ciphers and
+// ECDHE curves according to the server's preferences instead of the
+// client's.
+#define SSL_OP_CIPHER_SERVER_PREFERENCE 0x00400000L
+
+// The following flags toggle individual protocol versions. This is deprecated.
+// Use |SSL_CTX_set_min_proto_version| and |SSL_CTX_set_max_proto_version|
+// instead.
+#define SSL_OP_NO_TLSv1 0x04000000L
+#define SSL_OP_NO_TLSv1_2 0x08000000L
+#define SSL_OP_NO_TLSv1_1 0x10000000L
+#define SSL_OP_NO_TLSv1_3 0x20000000L
+#define SSL_OP_NO_DTLSv1 SSL_OP_NO_TLSv1
+#define SSL_OP_NO_DTLSv1_2 SSL_OP_NO_TLSv1_2
+
+// SSL_CTX_set_options enables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_clear_options disables all options set in |options| (which should be
+// one or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_get_options returns a bitmask of |SSL_OP_*| values that represent all
+// the options enabled for |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_options(const SSL_CTX *ctx);
+
+// SSL_set_options enables all options set in |options| (which should be one or
+// more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_set_options(SSL *ssl, uint32_t options);
+
+// SSL_clear_options disables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_clear_options(SSL *ssl, uint32_t options);
+
+// SSL_get_options returns a bitmask of |SSL_OP_*| values that represent all the
+// options enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_options(const SSL *ssl);
+
+
+// Modes.
+//
+// Modes configure API behavior.
+
+// SSL_MODE_ENABLE_PARTIAL_WRITE, in TLS, allows |SSL_write| to complete with a
+// partial result when the only part of the input was written in a single
+// record. In DTLS, it does nothing.
+#define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001L
+
+// SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER, in TLS, allows retrying an incomplete
+// |SSL_write| with a different buffer. However, |SSL_write| still assumes the
+// buffer contents are unchanged. This is not the default to avoid the
+// misconception that non-blocking |SSL_write| behaves like non-blocking
+// |write|. In DTLS, it does nothing.
+#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
+
+// SSL_MODE_NO_AUTO_CHAIN disables automatically building a certificate chain
+// before sending certificates to the peer. This flag is set (and the feature
+// disabled) by default.
+// TODO(davidben): Remove this behavior. https://crbug.com/boringssl/42.
+#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
+
+// SSL_MODE_ENABLE_FALSE_START allows clients to send application data before
+// receipt of ChangeCipherSpec and Finished. This mode enables full handshakes
+// to 'complete' in one RTT. See RFC 7918.
+//
+// When False Start is enabled, |SSL_do_handshake| may succeed before the
+// handshake has completely finished. |SSL_write| will function at this point,
+// and |SSL_read| will transparently wait for the final handshake leg before
+// returning application data. To determine if False Start occurred or when the
+// handshake is completely finished, see |SSL_in_false_start|, |SSL_in_init|,
+// and |SSL_CB_HANDSHAKE_DONE| from |SSL_CTX_set_info_callback|.
+#define SSL_MODE_ENABLE_FALSE_START 0x00000080L
+
+// SSL_MODE_CBC_RECORD_SPLITTING causes multi-byte CBC records in TLS 1.0 to be
+// split in two: the first record will contain a single byte and the second will
+// contain the remainder. This effectively randomises the IV and prevents BEAST
+// attacks.
+#define SSL_MODE_CBC_RECORD_SPLITTING 0x00000100L
+
+// SSL_MODE_NO_SESSION_CREATION will cause any attempts to create a session to
+// fail with SSL_R_SESSION_MAY_NOT_BE_CREATED. This can be used to enforce that
+// session resumption is used for a given SSL*.
+#define SSL_MODE_NO_SESSION_CREATION 0x00000200L
+
+// SSL_MODE_SEND_FALLBACK_SCSV sends TLS_FALLBACK_SCSV in the ClientHello.
+// To be set only by applications that reconnect with a downgraded protocol
+// version; see RFC 7507 for details.
+//
+// DO NOT ENABLE THIS if your application attempts a normal handshake. Only use
+// this in explicit fallback retries, following the guidance in RFC 7507.
+#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000400L
+
+// SSL_CTX_set_mode enables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_clear_mode disables all modes set in |mode| (which should be one or
+// more of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_get_mode returns a bitmask of |SSL_MODE_*| values that represent all
+// the modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx);
+
+// SSL_set_mode enables all modes set in |mode| (which should be one or more of
+// the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_set_mode(SSL *ssl, uint32_t mode);
+
+// SSL_clear_mode disables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode);
+
+// SSL_get_mode returns a bitmask of |SSL_MODE_*| values that represent all the
+// modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_mode(const SSL *ssl);
+
+// SSL_CTX_set0_buffer_pool sets a |CRYPTO_BUFFER_POOL| that will be used to
+// store certificates. This can allow multiple connections to share
+// certificates and thus save memory.
+//
+// The SSL_CTX does not take ownership of |pool| and the caller must ensure
+// that |pool| outlives |ctx| and all objects linked to it, including |SSL|,
+// |X509| and |SSL_SESSION| objects. Basically, don't ever free |pool|.
+OPENSSL_EXPORT void SSL_CTX_set0_buffer_pool(SSL_CTX *ctx,
+                                             CRYPTO_BUFFER_POOL *pool);
+
+
+// Configuring certificates and private keys.
+//
+// These functions configure the connection's leaf certificate, private key, and
+// certificate chain. The certificate chain is ordered leaf to root (as sent on
+// the wire) but does not include the leaf. Both client and server certificates
+// use these functions.
+//
+// Certificates and keys may be configured before the handshake or dynamically
+// in the early callback and certificate callback.
+
+// SSL_CTX_use_certificate sets |ctx|'s leaf certificate to |x509|. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x509);
+
+// SSL_use_certificate sets |ssl|'s leaf certificate to |x509|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_use_certificate(SSL *ssl, X509 *x509);
+
+// SSL_CTX_use_PrivateKey sets |ctx|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
+
+// SSL_use_PrivateKey sets |ssl|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
+
+// SSL_CTX_set0_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_CTX_set1_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_set0_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_set1_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_CTX_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On
+// success, it returns one and takes ownership of |x509|. Otherwise, it returns
+// zero.
+OPENSSL_EXPORT int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_CTX_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It
+// returns one on success and zero on failure. The caller retains ownership of
+// |x509| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On success,
+// it returns one and takes ownership of |x509|. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_add0_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_extra_chain_cert calls |SSL_CTX_add0_chain_cert|.
+OPENSSL_EXPORT int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It returns
+// one on success and zero on failure. The caller retains ownership of |x509|
+// and may release it freely.
+OPENSSL_EXPORT int SSL_add1_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_clear_chain_certs clears |ctx|'s certificate chain and returns
+// one.
+OPENSSL_EXPORT int SSL_CTX_clear_chain_certs(SSL_CTX *ctx);
+
+// SSL_CTX_clear_extra_chain_certs calls |SSL_CTX_clear_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx);
+
+// SSL_clear_chain_certs clears |ssl|'s certificate chain and returns one.
+OPENSSL_EXPORT int SSL_clear_chain_certs(SSL *ssl);
+
+// SSL_CTX_set_cert_cb sets a callback that is called to select a certificate.
+// The callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_CTX_set_cert_cb(SSL_CTX *ctx,
+                                        int (*cb)(SSL *ssl, void *arg),
+                                        void *arg);
+
+// SSL_set_cert_cb sets a callback that is called to select a certificate. The
+// callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg),
+                                    void *arg);
+
+// SSL_get0_certificate_types, for a client, sets |*out_types| to an array
+// containing the client certificate types requested by a server. It returns the
+// length of the array. Note this list is always empty in TLS 1.3. The server
+// will instead send signature algorithms. See
+// |SSL_get0_peer_verify_algorithms|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t SSL_get0_certificate_types(const SSL *ssl,
+                                                 const uint8_t **out_types);
+
+// SSL_get0_peer_verify_algorithms sets |*out_sigalgs| to an array containing
+// the signature algorithms the peer is able to verify. It returns the length of
+// the array. Note these values are only sent starting TLS 1.2 and only
+// mandatory starting TLS 1.3. If not sent, the empty array is returned. For the
+// historical client certificate types list, see |SSL_get0_certificate_types|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t
+SSL_get0_peer_verify_algorithms(const SSL *ssl, const uint16_t **out_sigalgs);
+
+// SSL_certs_clear resets the private key, leaf certificate, and certificate
+// chain of |ssl|.
+OPENSSL_EXPORT void SSL_certs_clear(SSL *ssl);
+
+// SSL_CTX_check_private_key returns one if the certificate and private key
+// configured in |ctx| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_check_private_key(const SSL_CTX *ctx);
+
+// SSL_check_private_key returns one if the certificate and private key
+// configured in |ssl| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_check_private_key(const SSL *ssl);
+
+// SSL_CTX_get0_certificate returns |ctx|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
+
+// SSL_get_certificate returns |ssl|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_get_certificate(const SSL *ssl);
+
+// SSL_CTX_get0_privatekey returns |ctx|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
+
+// SSL_get_privatekey returns |ssl|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_get_privatekey(const SSL *ssl);
+
+// SSL_CTX_get0_chain_certs sets |*out_chain| to |ctx|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx,
+                                            STACK_OF(X509) **out_chain);
+
+// SSL_CTX_get_extra_chain_certs calls |SSL_CTX_get0_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
+                                                 STACK_OF(X509) **out_chain);
+
+// SSL_get0_chain_certs sets |*out_chain| to |ssl|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_get0_chain_certs(const SSL *ssl,
+                                        STACK_OF(X509) **out_chain);
+
+// SSL_CTX_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request it. The |list| argument must
+// contain one or more SCT structures serialised as a SignedCertificateTimestamp
+// List (see https://tools.ietf.org/html/rfc6962#section-3.3) – i.e. each SCT
+// is prefixed by a big-endian, uint16 length and the concatenation of one or
+// more such prefixed SCTs are themselves also prefixed by a uint16 length. It
+// returns one on success and zero on error. The caller retains ownership of
+// |list|.
+OPENSSL_EXPORT int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx,
+                                                          const uint8_t *list,
+                                                          size_t list_len);
+
+// SSL_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request is. The same format as the
+// one used for |SSL_CTX_set_signed_cert_timestamp_list| applies. The caller
+// retains ownership of |list|.
+OPENSSL_EXPORT int SSL_set_signed_cert_timestamp_list(SSL *ctx,
+                                                      const uint8_t *list,
+                                                      size_t list_len);
+
+// SSL_CTX_set_ocsp_response sets the OCSP response that is sent to clients
+// which request it. It returns one on success and zero on error. The caller
+// retains ownership of |response|.
+OPENSSL_EXPORT int SSL_CTX_set_ocsp_response(SSL_CTX *ctx,
+                                             const uint8_t *response,
+                                             size_t response_len);
+
+// SSL_set_ocsp_response sets the OCSP response that is sent to clients which
+// request it. It returns one on success and zero on error. The caller retains
+// ownership of |response|.
+OPENSSL_EXPORT int SSL_set_ocsp_response(SSL *ssl,
+                                         const uint8_t *response,
+                                         size_t response_len);
+
+// SSL_SIGN_* are signature algorithm values as defined in TLS 1.3.
+#define SSL_SIGN_RSA_PKCS1_SHA1 0x0201
+#define SSL_SIGN_RSA_PKCS1_SHA256 0x0401
+#define SSL_SIGN_RSA_PKCS1_SHA384 0x0501
+#define SSL_SIGN_RSA_PKCS1_SHA512 0x0601
+#define SSL_SIGN_ECDSA_SHA1 0x0203
+#define SSL_SIGN_ECDSA_SECP256R1_SHA256 0x0403
+#define SSL_SIGN_ECDSA_SECP384R1_SHA384 0x0503
+#define SSL_SIGN_ECDSA_SECP521R1_SHA512 0x0603
+#define SSL_SIGN_RSA_PSS_RSAE_SHA256 0x0804
+#define SSL_SIGN_RSA_PSS_RSAE_SHA384 0x0805
+#define SSL_SIGN_RSA_PSS_RSAE_SHA512 0x0806
+#define SSL_SIGN_ED25519 0x0807
+
+// SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal signature algorithm used to
+// specify raw RSASSA-PKCS1-v1_5 with an MD5/SHA-1 concatenation, as used in TLS
+// before TLS 1.2.
+#define SSL_SIGN_RSA_PKCS1_MD5_SHA1 0xff01
+
+// SSL_get_signature_algorithm_name returns a human-readable name for |sigalg|,
+// or NULL if unknown. If |include_curve| is one, the curve for ECDSA algorithms
+// is included as in TLS 1.3. Otherwise, it is excluded as in TLS 1.2.
+OPENSSL_EXPORT const char *SSL_get_signature_algorithm_name(uint16_t sigalg,
+                                                            int include_curve);
+
+// SSL_get_signature_algorithm_key_type returns the key type associated with
+// |sigalg| as an |EVP_PKEY_*| constant or |EVP_PKEY_NONE| if unknown.
+OPENSSL_EXPORT int SSL_get_signature_algorithm_key_type(uint16_t sigalg);
+
+// SSL_get_signature_algorithm_digest returns the digest function associated
+// with |sigalg| or |NULL| if |sigalg| has no prehash (Ed25519) or is unknown.
+OPENSSL_EXPORT const EVP_MD *SSL_get_signature_algorithm_digest(
+    uint16_t sigalg);
+
+// SSL_is_signature_algorithm_rsa_pss returns one if |sigalg| is an RSA-PSS
+// signature algorithm and zero otherwise.
+OPENSSL_EXPORT int SSL_is_signature_algorithm_rsa_pss(uint16_t sigalg);
+
+// SSL_CTX_set_signing_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when signing with |ctx|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_signing_algorithm_prefs(SSL_CTX *ctx,
+                                                       const uint16_t *prefs,
+                                                       size_t num_prefs);
+
+// SSL_set_signing_algorithm_prefs configures |ssl| to use |prefs| as the
+// preference list when signing with |ssl|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_set_signing_algorithm_prefs(SSL *ssl,
+                                                   const uint16_t *prefs,
+                                                   size_t num_prefs);
+
+
+// Certificate and private key convenience functions.
+
+// SSL_CTX_set_chain_and_key sets the certificate chain and private key for a
+// TLS client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_chain_and_key(
+    SSL_CTX *ctx, CRYPTO_BUFFER *const *certs, size_t num_certs,
+    EVP_PKEY *privkey, const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_set_chain_and_key sets the certificate chain and private key for a TLS
+// client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_chain_and_key(
+    SSL *ssl, CRYPTO_BUFFER *const *certs, size_t num_certs, EVP_PKEY *privkey,
+    const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_CTX_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
+
+// SSL_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
+
+// The following functions configure certificates or private keys but take as
+// input DER-encoded structures. They return one on success and zero on
+// failure.
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, size_t der_len,
+                                                const uint8_t *der);
+OPENSSL_EXPORT int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *der,
+                                            size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
+                                               const uint8_t *der,
+                                               size_t der_len);
+OPENSSL_EXPORT int SSL_use_PrivateKey_ASN1(int type, SSL *ssl,
+                                           const uint8_t *der, size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx,
+                                                  const uint8_t *der,
+                                                  size_t der_len);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der,
+                                              size_t der_len);
+
+// The following functions configure certificates or private keys but take as
+// input files to read from. They return one on success and zero on failure. The
+// |type| parameter is one of the |SSL_FILETYPE_*| values and determines whether
+// the file's contents are read as PEM or DER.
+
+#define SSL_FILETYPE_PEM 1
+#define SSL_FILETYPE_ASN1 2
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx,
+                                                  const char *file,
+                                                  int type);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file,
+                                              int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
+                                                int type);
+OPENSSL_EXPORT int SSL_use_certificate_file(SSL *ssl, const char *file,
+                                            int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
+                                               int type);
+OPENSSL_EXPORT int SSL_use_PrivateKey_file(SSL *ssl, const char *file,
+                                           int type);
+
+// SSL_CTX_use_certificate_chain_file configures certificates for |ctx|. It
+// reads the contents of |file| as a PEM-encoded leaf certificate followed
+// optionally by the certificate chain to send to the peer. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx,
+                                                      const char *file);
+
+// SSL_CTX_set_default_passwd_cb sets the password callback for PEM-based
+// convenience functions called on |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx,
+                                                  pem_password_cb *cb);
+
+// SSL_CTX_get_default_passwd_cb returns the callback set by
+// |SSL_CTX_set_default_passwd_cb|.
+OPENSSL_EXPORT pem_password_cb *SSL_CTX_get_default_passwd_cb(
+    const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_passwd_cb_userdata sets the userdata parameter for
+// |ctx|'s password callback.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,
+                                                           void *data);
+
+// SSL_CTX_get_default_passwd_cb_userdata returns the userdata parameter set by
+// |SSL_CTX_set_default_passwd_cb_userdata|.
+OPENSSL_EXPORT void *SSL_CTX_get_default_passwd_cb_userdata(const SSL_CTX *ctx);
+
+
+// Custom private keys.
+
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT {
+  ssl_private_key_success,
+  ssl_private_key_retry,
+  ssl_private_key_failure,
+};
+
+// ssl_private_key_method_st (aka |SSL_PRIVATE_KEY_METHOD|) describes private
+// key hooks. This is used to off-load signing operations to a custom,
+// potentially asynchronous, backend. Metadata about the key such as the type
+// and size are parsed out of the certificate.
+struct ssl_private_key_method_st {
+  // sign signs the message |in| in using the specified signature algorithm. On
+  // success, it returns |ssl_private_key_success| and writes at most |max_out|
+  // bytes of signature data to |out| and sets |*out_len| to the number of bytes
+  // written. On failure, it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. |sign| should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed. This will result in a call to |complete|.
+  //
+  // |signature_algorithm| is one of the |SSL_SIGN_*| values, as defined in TLS
+  // 1.3. Note that, in TLS 1.2, ECDSA algorithms do not require that curve
+  // sizes match hash sizes, so the curve portion of |SSL_SIGN_ECDSA_*| values
+  // must be ignored. BoringSSL will internally handle the curve matching logic
+  // where appropriate.
+  //
+  // It is an error to call |sign| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*sign)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out,
+                                        uint16_t signature_algorithm,
+                                        const uint8_t *in, size_t in_len);
+
+  // decrypt decrypts |in_len| bytes of encrypted data from |in|. On success it
+  // returns |ssl_private_key_success|, writes at most |max_out| bytes of
+  // decrypted data to |out| and sets |*out_len| to the actual number of bytes
+  // written. On failure it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. The caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in a call to |complete|. This
+  // function only works with RSA keys and should perform a raw RSA decryption
+  // operation with no padding.
+  //
+  // It is an error to call |decrypt| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*decrypt)(SSL *ssl, uint8_t *out,
+                                           size_t *out_len, size_t max_out,
+                                           const uint8_t *in, size_t in_len);
+
+  // complete completes a pending operation. If the operation has completed, it
+  // returns |ssl_private_key_success| and writes the result to |out| as in
+  // |sign|. Otherwise, it returns |ssl_private_key_failure| on failure and
+  // |ssl_private_key_retry| if the operation is still in progress.
+  //
+  // |complete| may be called arbitrarily many times before completion, but it
+  // is an error to call |complete| if there is no pending operation in progress
+  // on |ssl|.
+  enum ssl_private_key_result_t (*complete)(SSL *ssl, uint8_t *out,
+                                            size_t *out_len, size_t max_out);
+};
+
+// SSL_set_private_key_method configures a custom private key on |ssl|.
+// |key_method| must remain valid for the lifetime of |ssl|.
+OPENSSL_EXPORT void SSL_set_private_key_method(
+    SSL *ssl, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_CTX_set_private_key_method configures a custom private key on |ctx|.
+// |key_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_private_key_method(
+    SSL_CTX *ctx, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+
+// Cipher suites.
+//
+// |SSL_CIPHER| objects represent cipher suites.
+
+DEFINE_CONST_STACK_OF(SSL_CIPHER)
+
+// SSL_get_cipher_by_value returns the structure representing a TLS cipher
+// suite based on its assigned number, or NULL if unknown. See
+// https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value);
+
+// SSL_CIPHER_get_id returns |cipher|'s non-IANA id. This is not its
+// IANA-assigned number, which is called the "value" here, although it may be
+// cast to a |uint16_t| to get it.
+OPENSSL_EXPORT uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_value returns |cipher|'s IANA-assigned number.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_value(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_aead returns one if |cipher| uses an AEAD cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_aead(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_block_cipher returns one if |cipher| is a block cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_block_cipher(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_cipher_nid returns the NID for |cipher|'s bulk
+// cipher. Possible values are |NID_aes_128_gcm|, |NID_aes_256_gcm|,
+// |NID_chacha20_poly1305|, |NID_aes_128_cbc|, |NID_aes_256_cbc|, and
+// |NID_des_ede3_cbc|.
+OPENSSL_EXPORT int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_digest_nid returns the NID for |cipher|'s HMAC if it is a
+// legacy cipher suite. For modern AEAD-based ciphers (see
+// |SSL_CIPHER_is_aead|), it returns |NID_undef|.
+//
+// Note this function only returns the legacy HMAC digest, not the PRF hash.
+OPENSSL_EXPORT int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_nid returns the NID for |cipher|'s key exchange. This may
+// be |NID_kx_rsa|, |NID_kx_ecdhe|, or |NID_kx_psk| for TLS 1.2. In TLS 1.3,
+// cipher suites do not specify the key exchange, so this function returns
+// |NID_kx_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_auth_nid returns the NID for |cipher|'s authentication
+// type. This may be |NID_auth_rsa|, |NID_auth_ecdsa|, or |NID_auth_psk| for TLS
+// 1.2. In TLS 1.3, cipher suites do not specify authentication, so this
+// function returns |NID_auth_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_prf_nid retuns the NID for |cipher|'s PRF hash. If |cipher| is
+// a pre-TLS-1.2 cipher, it returns |NID_md5_sha1| but note these ciphers use
+// SHA-256 in TLS 1.2. Other return values may be treated uniformly in all
+// applicable versions.
+OPENSSL_EXPORT int SSL_CIPHER_get_prf_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_min_version returns the minimum protocol version required
+// for |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_min_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_max_version returns the maximum protocol version that
+// supports |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_max_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_standard_name returns the standard IETF name for |cipher|. For
+// example, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256".
+OPENSSL_EXPORT const char *SSL_CIPHER_standard_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_name returns the OpenSSL name of |cipher|. For example,
+// "ECDHE-RSA-AES128-GCM-SHA256". Callers are recommended to use
+// |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_name returns a string that describes the key-exchange
+// method used by |cipher|. For example, "ECDHE_ECDSA". TLS 1.3 AEAD-only
+// ciphers return the string "GENERIC".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_kx_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_bits returns the strength, in bits, of |cipher|. If
+// |out_alg_bits| is not NULL, it writes the number of bits consumed by the
+// symmetric algorithm to |*out_alg_bits|.
+OPENSSL_EXPORT int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher,
+                                       int *out_alg_bits);
+
+
+// Cipher suite configuration.
+//
+// OpenSSL uses a mini-language to configure cipher suites. The language
+// maintains an ordered list of enabled ciphers, along with an ordered list of
+// disabled but available ciphers. Initially, all ciphers are disabled with a
+// default ordering. The cipher string is then interpreted as a sequence of
+// directives, separated by colons, each of which modifies this state.
+//
+// Most directives consist of a one character or empty opcode followed by a
+// selector which matches a subset of available ciphers.
+//
+// Available opcodes are:
+//
+//   The empty opcode enables and appends all matching disabled ciphers to the
+//   end of the enabled list. The newly appended ciphers are ordered relative to
+//   each other matching their order in the disabled list.
+//
+//   |-| disables all matching enabled ciphers and prepends them to the disabled
+//   list, with relative order from the enabled list preserved. This means the
+//   most recently disabled ciphers get highest preference relative to other
+//   disabled ciphers if re-enabled.
+//
+//   |+| moves all matching enabled ciphers to the end of the enabled list, with
+//   relative order preserved.
+//
+//   |!| deletes all matching ciphers, enabled or not, from either list. Deleted
+//   ciphers will not matched by future operations.
+//
+// A selector may be a specific cipher (using either the standard or OpenSSL
+// name for the cipher) or one or more rules separated by |+|. The final
+// selector matches the intersection of each rule. For instance, |AESGCM+aECDSA|
+// matches ECDSA-authenticated AES-GCM ciphers.
+//
+// Available cipher rules are:
+//
+//   |ALL| matches all ciphers.
+//
+//   |kRSA|, |kDHE|, |kECDHE|, and |kPSK| match ciphers using plain RSA, DHE,
+//   ECDHE, and plain PSK key exchanges, respectively. Note that ECDHE_PSK is
+//   matched by |kECDHE| and not |kPSK|.
+//
+//   |aRSA|, |aECDSA|, and |aPSK| match ciphers authenticated by RSA, ECDSA, and
+//   a pre-shared key, respectively.
+//
+//   |RSA|, |DHE|, |ECDHE|, |PSK|, |ECDSA|, and |PSK| are aliases for the
+//   corresponding |k*| or |a*| cipher rule. |RSA| is an alias for |kRSA|, not
+//   |aRSA|.
+//
+//   |3DES|, |AES128|, |AES256|, |AES|, |AESGCM|, |CHACHA20| match ciphers
+//   whose bulk cipher use the corresponding encryption scheme. Note that
+//   |AES|, |AES128|, and |AES256| match both CBC and GCM ciphers.
+//
+//   |SHA1|, and its alias |SHA|, match legacy cipher suites using HMAC-SHA1.
+//
+// Although implemented, authentication-only ciphers match no rules and must be
+// explicitly selected by name.
+//
+// Deprecated cipher rules:
+//
+//   |kEDH|, |EDH|, |kEECDH|, and |EECDH| are legacy aliases for |kDHE|, |DHE|,
+//   |kECDHE|, and |ECDHE|, respectively.
+//
+//   |HIGH| is an alias for |ALL|.
+//
+//   |FIPS| is an alias for |HIGH|.
+//
+//   |SSLv3| and |TLSv1| match ciphers available in TLS 1.1 or earlier.
+//   |TLSv1_2| matches ciphers new in TLS 1.2. This is confusing and should not
+//   be used.
+//
+// Unknown rules are silently ignored by legacy APIs, and rejected by APIs with
+// "strict" in the name, which should be preferred. Cipher lists can be long
+// and it's easy to commit typos. Strict functions will also reject the use of
+// spaces, semi-colons and commas as alternative separators.
+//
+// The special |@STRENGTH| directive will sort all enabled ciphers by strength.
+//
+// The |DEFAULT| directive, when appearing at the front of the string, expands
+// to the default ordering of available ciphers.
+//
+// If configuring a server, one may also configure equal-preference groups to
+// partially respect the client's preferences when
+// |SSL_OP_CIPHER_SERVER_PREFERENCE| is enabled. Ciphers in an equal-preference
+// group have equal priority and use the client order. This may be used to
+// enforce that AEADs are preferred but select AES-GCM vs. ChaCha20-Poly1305
+// based on client preferences. An equal-preference is specified with square
+// brackets, combining multiple selectors separated by |. For example:
+//
+//   [TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256|TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256]
+//
+// Once an equal-preference group is used, future directives must be
+// opcode-less. Inside an equal-preference group, spaces are not allowed.
+//
+// TLS 1.3 ciphers do not participate in this mechanism and instead have a
+// built-in preference order. Functions to set cipher lists do not affect TLS
+// 1.3, and functions to query the cipher list do not include TLS 1.3
+// ciphers.
+
+// SSL_DEFAULT_CIPHER_LIST is the default cipher suite configuration. It is
+// substituted when a cipher string starts with 'DEFAULT'.
+#define SSL_DEFAULT_CIPHER_LIST "ALL"
+
+// SSL_CTX_set_strict_cipher_list configures the cipher list for |ctx|,
+// evaluating |str| as a cipher string and returning error if |str| contains
+// anything meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_strict_cipher_list(SSL_CTX *ctx,
+                                                  const char *str);
+
+// SSL_CTX_set_cipher_list configures the cipher list for |ctx|, evaluating
+// |str| as a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_CTX_set_strict_cipher_list|. This function tolerates
+// garbage inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set_strict_cipher_list configures the cipher list for |ssl|, evaluating
+// |str| as a cipher string and returning error if |str| contains anything
+// meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_set_strict_cipher_list(SSL *ssl, const char *str);
+
+// SSL_set_cipher_list configures the cipher list for |ssl|, evaluating |str| as
+// a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_set_strict_cipher_list|. This function tolerates garbage
+// inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_set_cipher_list(SSL *ssl, const char *str);
+
+// SSL_CTX_get_ciphers returns the cipher list for |ctx|, in order of
+// preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
+
+// SSL_CTX_cipher_in_group returns one if the |i|th cipher (see
+// |SSL_CTX_get_ciphers|) is in the same equipreference group as the one
+// following it and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_cipher_in_group(const SSL_CTX *ctx, size_t i);
+
+// SSL_get_ciphers returns the cipher list for |ssl|, in order of preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl);
+
+
+// Connection information.
+
+// SSL_is_init_finished returns one if |ssl| has completed its initial handshake
+// and has no pending handshake. It returns zero otherwise.
+OPENSSL_EXPORT int SSL_is_init_finished(const SSL *ssl);
+
+// SSL_in_init returns one if |ssl| has a pending handshake and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_in_init(const SSL *ssl);
+
+// SSL_in_false_start returns one if |ssl| has a pending handshake that is in
+// False Start. |SSL_write| may be called at this point without waiting for the
+// peer, but |SSL_read| will complete the handshake before accepting application
+// data.
+//
+// See also |SSL_MODE_ENABLE_FALSE_START|.
+OPENSSL_EXPORT int SSL_in_false_start(const SSL *ssl);
+
+// SSL_get_peer_certificate returns the peer's leaf certificate or NULL if the
+// peer did not use certificates. The caller must call |X509_free| on the
+// result to release it.
+OPENSSL_EXPORT X509 *SSL_get_peer_certificate(const SSL *ssl);
+
+// SSL_get_peer_cert_chain returns the peer's certificate chain or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// WARNING: This function behaves differently between client and server. If
+// |ssl| is a server, the returned chain does not include the leaf certificate.
+// If a client, it does.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);
+
+// SSL_get_peer_full_cert_chain returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the same as |SSL_get_peer_cert_chain| except that this function
+// always returns the full chain, i.e. the first element of the return value
+// (if any) will be the leaf certificate. In constrast,
+// |SSL_get_peer_cert_chain| returns only the intermediate certificates if the
+// |ssl| is a server.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl);
+
+// SSL_get0_peer_certificates returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the |CRYPTO_BUFFER| variant of |SSL_get_peer_full_cert_chain|.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_peer_certificates(const SSL *ssl);
+
+// SSL_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to point to
+// |*out_len| bytes of SCT information from the server. This is only valid if
+// |ssl| is a client. The SCT information is a SignedCertificateTimestampList
+// (including the two leading length bytes).
+// See https://tools.ietf.org/html/rfc6962#section-3.3
+// If no SCT was received then |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_signed_cert_timestamp_list(const SSL *ssl,
+                                                        const uint8_t **out,
+                                                        size_t *out_len);
+
+// SSL_get0_ocsp_response sets |*out| and |*out_len| to point to |*out_len|
+// bytes of an OCSP response from the server. This is the DER encoding of an
+// OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
+                                           size_t *out_len);
+
+// SSL_get_tls_unique writes at most |max_out| bytes of the tls-unique value
+// for |ssl| to |out| and sets |*out_len| to the number of bytes written. It
+// returns one on success or zero on error. In general |max_out| should be at
+// least 12.
+//
+// This function will always fail if the initial handshake has not completed.
+// The tls-unique value will change after a renegotiation but, since
+// renegotiations can be initiated by the server at any point, the higher-level
+// protocol must either leave them disabled or define states in which the
+// tls-unique value can be read.
+//
+// The tls-unique value is defined by
+// https://tools.ietf.org/html/rfc5929#section-3.1. Due to a weakness in the
+// TLS protocol, tls-unique is broken for resumed connections unless the
+// Extended Master Secret extension is negotiated. Thus this function will
+// return zero if |ssl| performed session resumption unless EMS was used when
+// negotiating the original session.
+OPENSSL_EXPORT int SSL_get_tls_unique(const SSL *ssl, uint8_t *out,
+                                      size_t *out_len, size_t max_out);
+
+// SSL_get_extms_support returns one if the Extended Master Secret extension or
+// TLS 1.3 was negotiated. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_extms_support(const SSL *ssl);
+
+// SSL_get_current_cipher returns cipher suite used by |ssl|, or NULL if it has
+// not been negotiated yet.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl);
+
+// SSL_session_reused returns one if |ssl| performed an abbreviated handshake
+// and zero otherwise.
+//
+// TODO(davidben): Hammer down the semantics of this API while a handshake,
+// initial or renego, is in progress.
+OPENSSL_EXPORT int SSL_session_reused(const SSL *ssl);
+
+// SSL_get_secure_renegotiation_support returns one if the peer supports secure
+// renegotiation (RFC 5746) or TLS 1.3. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_secure_renegotiation_support(const SSL *ssl);
+
+// SSL_export_keying_material exports a value derived from the master secret, as
+// specified in RFC 5705. It writes |out_len| bytes to |out| given a label and
+// optional context. (Since a zero length context is allowed, the |use_context|
+// flag controls whether a context is included.)
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int SSL_export_keying_material(
+    SSL *ssl, uint8_t *out, size_t out_len, const char *label, size_t label_len,
+    const uint8_t *context, size_t context_len, int use_context);
+
+
+// Sessions.
+//
+// An |SSL_SESSION| represents an SSL session that may be resumed in an
+// abbreviated handshake. It is reference-counted and immutable. Once
+// established, an |SSL_SESSION| may be shared by multiple |SSL| objects on
+// different threads and must not be modified.
+
+DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
+
+// SSL_SESSION_new returns a newly-allocated blank |SSL_SESSION| or NULL on
+// error. This may be useful when writing tests but should otherwise not be
+// used.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx);
+
+// SSL_SESSION_up_ref increments the reference count of |session| and returns
+// one.
+OPENSSL_EXPORT int SSL_SESSION_up_ref(SSL_SESSION *session);
+
+// SSL_SESSION_free decrements the reference count of |session|. If it reaches
+// zero, all data referenced by |session| and |session| itself are released.
+OPENSSL_EXPORT void SSL_SESSION_free(SSL_SESSION *session);
+
+// SSL_SESSION_to_bytes serializes |in| into a newly allocated buffer and sets
+// |*out_data| to that buffer and |*out_len| to its length. The caller takes
+// ownership of the buffer and must call |OPENSSL_free| when done. It returns
+// one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes(const SSL_SESSION *in,
+                                        uint8_t **out_data, size_t *out_len);
+
+// SSL_SESSION_to_bytes_for_ticket serializes |in|, but excludes the session
+// identification information, namely the session ID and ticket.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in,
+                                                   uint8_t **out_data,
+                                                   size_t *out_len);
+
+// SSL_SESSION_from_bytes parses |in_len| bytes from |in| as an SSL_SESSION. It
+// returns a newly-allocated |SSL_SESSION| on success or NULL on error.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_from_bytes(
+    const uint8_t *in, size_t in_len, const SSL_CTX *ctx);
+
+// SSL_SESSION_get_version returns a string describing the TLS or DTLS version
+// |session| was established at. For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_SESSION_get_version(const SSL_SESSION *session);
+
+// SSL_SESSION_get_protocol_version returns the TLS or DTLS version |session|
+// was established at.
+OPENSSL_EXPORT uint16_t
+SSL_SESSION_get_protocol_version(const SSL_SESSION *session);
+
+// SSL_SESSION_set_protocol_version sets |session|'s TLS or DTLS version to
+// |version|. This may be useful when writing tests but should otherwise not be
+// used. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_set_protocol_version(SSL_SESSION *session,
+                                                    uint16_t version);
+
+// SSL_MAX_SSL_SESSION_ID_LENGTH is the maximum length of an SSL session ID.
+#define SSL_MAX_SSL_SESSION_ID_LENGTH 32
+
+// SSL_SESSION_get_id returns a pointer to a buffer containing |session|'s
+// session ID and sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session,
+                                                 unsigned *out_len);
+
+// SSL_SESSION_set1_id sets |session|'s session ID to |sid|, It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id(SSL_SESSION *session, const uint8_t *sid,
+                                       size_t sid_len);
+
+// SSL_SESSION_get_time returns the time at which |session| was established in
+// seconds since the UNIX epoch.
+OPENSSL_EXPORT uint64_t SSL_SESSION_get_time(const SSL_SESSION *session);
+
+// SSL_SESSION_get_timeout returns the lifetime of |session| in seconds.
+OPENSSL_EXPORT uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer returns the peer leaf certificate stored in
+// |session|.
+//
+// TODO(davidben): This should return a const X509 *.
+OPENSSL_EXPORT X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_certificates returns the peer certificate chain stored
+// in |session|, or NULL if the peer did not use certificates. This is the
+// unverified list of certificates as sent by the peer, not the final chain
+// built during verification. The caller does not take ownership of the result.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_SESSION_get0_peer_certificates(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to
+// point to |*out_len| bytes of SCT information stored in |session|. This is
+// only valid for client sessions. The SCT information is a
+// SignedCertificateTimestampList (including the two leading length bytes). See
+// https://tools.ietf.org/html/rfc6962#section-3.3 If no SCT was received then
+// |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_signed_cert_timestamp_list(
+    const SSL_SESSION *session, const uint8_t **out, size_t *out_len);
+
+// SSL_SESSION_get0_ocsp_response sets |*out| and |*out_len| to point to
+// |*out_len| bytes of an OCSP response from the server. This is the DER
+// encoding of an OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ocsp_response(const SSL_SESSION *session,
+                                                   const uint8_t **out,
+                                                   size_t *out_len);
+
+// SSL_MAX_MASTER_KEY_LENGTH is the maximum length of a master secret.
+#define SSL_MAX_MASTER_KEY_LENGTH 48
+
+// SSL_SESSION_get_master_key writes up to |max_out| bytes of |session|'s master
+// secret to |out| and returns the number of bytes written. If |max_out| is
+// zero, it returns the size of the master secret.
+OPENSSL_EXPORT size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
+                                                 uint8_t *out, size_t max_out);
+
+// SSL_SESSION_set_time sets |session|'s creation time to |time| and returns
+// |time|. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint64_t SSL_SESSION_set_time(SSL_SESSION *session,
+                                             uint64_t time);
+
+// SSL_SESSION_set_timeout sets |session|'s timeout to |timeout| and returns
+// one. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session,
+                                                uint32_t timeout);
+
+// SSL_SESSION_get0_id_context returns a pointer to a buffer containing
+// |session|'s session ID context (see |SSL_CTX_set_session_id_context|) and
+// sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get0_id_context(
+    const SSL_SESSION *session, unsigned *out_len);
+
+// SSL_SESSION_set1_id_context sets |session|'s session ID context (see
+// |SSL_CTX_set_session_id_context|) to |sid_ctx|. It returns one on success and
+// zero on error. This function may be useful in writing tests but otherwise
+// should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id_context(SSL_SESSION *session,
+                                               const uint8_t *sid_ctx,
+                                               size_t sid_ctx_len);
+
+// SSL_SESSION_should_be_single_use returns one if |session| should be
+// single-use (TLS 1.3 and later) and zero otherwise.
+//
+// If this function returns one, clients retain multiple sessions and use each
+// only once. This prevents passive observers from correlating connections with
+// tickets. See RFC 8446, appendix C.4. If it returns zero, |session| cannot be
+// used without leaking a correlator.
+OPENSSL_EXPORT int SSL_SESSION_should_be_single_use(const SSL_SESSION *session);
+
+// SSL_SESSION_is_resumable returns one if |session| is resumable and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_is_resumable(const SSL_SESSION *session);
+
+// SSL_SESSION_has_ticket returns one if |session| has a ticket and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_has_ticket(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_ticket sets |*out_ticket| and |*out_len| to |session|'s
+// ticket, or NULL and zero if it does not have one. |out_ticket| may be NULL
+// if only the ticket length is needed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ticket(const SSL_SESSION *session,
+                                            const uint8_t **out_ticket,
+                                            size_t *out_len);
+
+// SSL_SESSION_set_ticket sets |session|'s ticket to |ticket|. It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set_ticket(SSL_SESSION *session,
+                                          const uint8_t *ticket,
+                                          size_t ticket_len);
+
+// SSL_SESSION_get_ticket_lifetime_hint returns ticket lifetime hint of
+// |session| in seconds or zero if none was set.
+OPENSSL_EXPORT uint32_t
+SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_cipher returns the cipher negotiated by the connection which
+// established |session|.
+//
+// Note that, in TLS 1.3, there is no guarantee that resumptions with |session|
+// will use that cipher. Prefer calling |SSL_get_current_cipher| on the |SSL|
+// instead.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_SESSION_get0_cipher(
+    const SSL_SESSION *session);
+
+// SSL_SESSION_has_peer_sha256 returns one if |session| has a SHA-256 hash of
+// the peer's certificate retained and zero if the peer did not present a
+// certificate or if this was not enabled when |session| was created. See also
+// |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT int SSL_SESSION_has_peer_sha256(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_sha256 sets |*out_ptr| and |*out_len| to the SHA-256
+// hash of the peer certificate retained in |session|, or NULL and zero if it
+// does not have one. See also |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT void SSL_SESSION_get0_peer_sha256(const SSL_SESSION *session,
+                                                 const uint8_t **out_ptr,
+                                                 size_t *out_len);
+
+
+// Session caching.
+//
+// Session caching allows connections to be established more efficiently based
+// on saved parameters from a previous connection, called a session (see
+// |SSL_SESSION|). The client offers a saved session, using an opaque identifier
+// from a previous connection. The server may accept the session, if it has the
+// parameters available. Otherwise, it will decline and continue with a full
+// handshake.
+//
+// This requires both the client and the server to retain session state. A
+// client does so with a stateful session cache. A server may do the same or, if
+// supported by both sides, statelessly using session tickets. For more
+// information on the latter, see the next section.
+//
+// For a server, the library implements a built-in internal session cache as an
+// in-memory hash table. Servers may also use |SSL_CTX_sess_set_get_cb| and
+// |SSL_CTX_sess_set_new_cb| to implement a custom external session cache. In
+// particular, this may be used to share a session cache between multiple
+// servers in a large deployment. An external cache may be used in addition to
+// or instead of the internal one. Use |SSL_CTX_set_session_cache_mode| to
+// toggle the internal cache.
+//
+// For a client, the only option is an external session cache. Clients may use
+// |SSL_CTX_sess_set_new_cb| to register a callback for when new sessions are
+// available. These may be cached and, in subsequent compatible connections,
+// configured with |SSL_set_session|.
+//
+// Note that offering or accepting a session short-circuits certificate
+// verification and most parameter negotiation. Resuming sessions across
+// different contexts may result in security failures and surprising
+// behavior. For a typical client, this means sessions for different hosts must
+// be cached under different keys. A client that connects to the same host with,
+// e.g., different cipher suite settings or client certificates should also use
+// separate session caches between those contexts. Servers should also partition
+// session caches between SNI hosts with |SSL_CTX_set_session_id_context|.
+//
+// Note also, in TLS 1.2 and earlier, offering sessions allows passive observers
+// to correlate different client connections. TLS 1.3 and later fix this,
+// provided clients use sessions at most once. Session caches are managed by the
+// caller in BoringSSL, so this must be implemented externally. See
+// |SSL_SESSION_should_be_single_use| for details.
+
+// SSL_SESS_CACHE_OFF disables all session caching.
+#define SSL_SESS_CACHE_OFF 0x0000
+
+// SSL_SESS_CACHE_CLIENT enables session caching for a client. The internal
+// cache is never used on a client, so this only enables the callbacks.
+#define SSL_SESS_CACHE_CLIENT 0x0001
+
+// SSL_SESS_CACHE_SERVER enables session caching for a server.
+#define SSL_SESS_CACHE_SERVER 0x0002
+
+// SSL_SESS_CACHE_BOTH enables session caching for both client and server.
+#define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_SERVER)
+
+// SSL_SESS_CACHE_NO_AUTO_CLEAR disables automatically calling
+// |SSL_CTX_flush_sessions| every 255 connections.
+#define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
+
+// SSL_SESS_CACHE_NO_INTERNAL_LOOKUP, on a server, disables looking up a session
+// from the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
+
+// SSL_SESS_CACHE_NO_INTERNAL_STORE, on a server, disables storing sessions in
+// the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
+
+// SSL_SESS_CACHE_NO_INTERNAL, on a server, disables the internal session
+// cache.
+#define SSL_SESS_CACHE_NO_INTERNAL \
+    (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP | SSL_SESS_CACHE_NO_INTERNAL_STORE)
+
+// SSL_CTX_set_session_cache_mode sets the session cache mode bits for |ctx| to
+// |mode|. It returns the previous value.
+OPENSSL_EXPORT int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_session_cache_mode returns the session cache mode bits for
+// |ctx|
+OPENSSL_EXPORT int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx);
+
+// SSL_set_session, for a client, configures |ssl| to offer to resume |session|
+// in the initial handshake and returns one. The caller retains ownership of
+// |session|. Note that configuring a session assumes the authentication in the
+// session is valid. For callers that wish to revalidate the session before
+// offering, see |SSL_SESSION_get0_peer_certificates|,
+// |SSL_SESSION_get0_signed_cert_timestamp_list|, and
+// |SSL_SESSION_get0_ocsp_response|.
+//
+// It is an error to call this function after the handshake has begun.
+OPENSSL_EXPORT int SSL_set_session(SSL *ssl, SSL_SESSION *session);
+
+// SSL_DEFAULT_SESSION_TIMEOUT is the default lifetime, in seconds, of a
+// session in TLS 1.2 or earlier. This is how long we are willing to use the
+// secret to encrypt traffic without fresh key material.
+#define SSL_DEFAULT_SESSION_TIMEOUT (2 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT is the default lifetime, in seconds, of a
+// session for TLS 1.3 psk_dhe_ke. This is how long we are willing to use the
+// secret as an authenticator.
+#define SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT (2 * 24 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_AUTH_TIMEOUT is the default non-renewable lifetime, in
+// seconds, of a TLS 1.3 session. This is how long we are willing to trust the
+// signature in the initial handshake.
+#define SSL_DEFAULT_SESSION_AUTH_TIMEOUT (7 * 24 * 60 * 60)
+
+// SSL_CTX_set_timeout sets the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout);
+
+// SSL_CTX_set_session_psk_dhe_timeout sets the lifetime, in seconds, of TLS 1.3
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx,
+                                                        uint32_t timeout);
+
+// SSL_CTX_get_timeout returns the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx);
+
+// SSL_MAX_SID_CTX_LENGTH is the maximum length of a session ID context.
+#define SSL_MAX_SID_CTX_LENGTH 32
+
+// SSL_CTX_set_session_id_context sets |ctx|'s session ID context to |sid_ctx|.
+// It returns one on success and zero on error. The session ID context is an
+// application-defined opaque byte string. A session will not be used in a
+// connection without a matching session ID context.
+//
+// For a server, if |SSL_VERIFY_PEER| is enabled, it is an error to not set a
+// session ID context.
+OPENSSL_EXPORT int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
+                                                  const uint8_t *sid_ctx,
+                                                  size_t sid_ctx_len);
+
+// SSL_set_session_id_context sets |ssl|'s session ID context to |sid_ctx|. It
+// returns one on success and zero on error. See also
+// |SSL_CTX_set_session_id_context|.
+OPENSSL_EXPORT int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
+                                              size_t sid_ctx_len);
+
+// SSL_get0_session_id_context returns a pointer to |ssl|'s session ID context
+// and sets |*out_len| to its length.  It returns NULL on error.
+OPENSSL_EXPORT const uint8_t *SSL_get0_session_id_context(const SSL *ssl,
+                                                          size_t *out_len);
+
+// SSL_SESSION_CACHE_MAX_SIZE_DEFAULT is the default maximum size of a session
+// cache.
+#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024 * 20)
+
+// SSL_CTX_sess_set_cache_size sets the maximum size of |ctx|'s internal session
+// cache to |size|. It returns the previous value.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx,
+                                                         unsigned long size);
+
+// SSL_CTX_sess_get_cache_size returns the maximum size of |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_number returns the number of sessions in |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT size_t SSL_CTX_sess_number(const SSL_CTX *ctx);
+
+// SSL_CTX_add_session inserts |session| into |ctx|'s internal session cache. It
+// returns one on success and zero on error or if |session| is already in the
+// cache. The caller retains its reference to |session|.
+OPENSSL_EXPORT int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_remove_session removes |session| from |ctx|'s internal session cache.
+// It returns one on success and zero if |session| was not in the cache.
+OPENSSL_EXPORT int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_flush_sessions removes all sessions from |ctx| which have expired as
+// of time |time|. If |time| is zero, all sessions are removed.
+OPENSSL_EXPORT void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time);
+
+// SSL_CTX_sess_set_new_cb sets the callback to be called when a new session is
+// established and ready to be cached. If the session cache is disabled (the
+// appropriate one of |SSL_SESS_CACHE_CLIENT| or |SSL_SESS_CACHE_SERVER| is
+// unset), the callback is not called.
+//
+// The callback is passed a reference to |session|. It returns one if it takes
+// ownership (and then calls |SSL_SESSION_free| when done) and zero otherwise. A
+// consumer which places |session| into an in-memory cache will likely return
+// one, with the cache calling |SSL_SESSION_free|. A consumer which serializes
+// |session| with |SSL_SESSION_to_bytes| may not need to retain |session| and
+// will likely return zero. Returning one is equivalent to calling
+// |SSL_SESSION_up_ref| and then returning zero.
+//
+// Note: For a client, the callback may be called on abbreviated handshakes if a
+// ticket is renewed. Further, it may not be called until some time after
+// |SSL_do_handshake| or |SSL_connect| completes if False Start is enabled. Thus
+// it's recommended to use this callback over calling |SSL_get_session| on
+// handshake completion.
+OPENSSL_EXPORT void SSL_CTX_sess_set_new_cb(
+    SSL_CTX *ctx, int (*new_session_cb)(SSL *ssl, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_new_cb returns the callback set by
+// |SSL_CTX_sess_set_new_cb|.
+OPENSSL_EXPORT int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(
+    SSL *ssl, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_remove_cb sets a callback which is called when a session is
+// removed from the internal session cache.
+//
+// TODO(davidben): What is the point of this callback? It seems useless since it
+// only fires on sessions in the internal cache.
+OPENSSL_EXPORT void SSL_CTX_sess_set_remove_cb(
+    SSL_CTX *ctx,
+    void (*remove_session_cb)(SSL_CTX *ctx, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_remove_cb returns the callback set by
+// |SSL_CTX_sess_set_remove_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(
+    SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_get_cb sets a callback to look up a session by ID for a
+// server. The callback is passed the session ID and should return a matching
+// |SSL_SESSION| or NULL if not found. It should set |*out_copy| to zero and
+// return a new reference to the session. This callback is not used for a
+// client.
+//
+// For historical reasons, if |*out_copy| is set to one (default), the SSL
+// library will take a new reference to the returned |SSL_SESSION|, expecting
+// the callback to return a non-owning pointer. This is not recommended. If
+// |ctx| and thus the callback is used on multiple threads, the session may be
+// removed and invalidated before the SSL library calls |SSL_SESSION_up_ref|,
+// whereas the callback may synchronize internally.
+//
+// To look up a session asynchronously, the callback may return
+// |SSL_magic_pending_session_ptr|. See the documentation for that function and
+// |SSL_ERROR_PENDING_SESSION|.
+//
+// If the internal session cache is enabled, the callback is only consulted if
+// the internal cache does not return a match.
+OPENSSL_EXPORT void SSL_CTX_sess_set_get_cb(
+    SSL_CTX *ctx, SSL_SESSION *(*get_session_cb)(SSL *ssl, const uint8_t *id,
+                                                 int id_len, int *out_copy));
+
+// SSL_CTX_sess_get_get_cb returns the callback set by
+// |SSL_CTX_sess_set_get_cb|.
+OPENSSL_EXPORT SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(
+    SSL *ssl, const uint8_t *id, int id_len, int *out_copy);
+
+// SSL_magic_pending_session_ptr returns a magic |SSL_SESSION|* which indicates
+// that the session isn't currently unavailable. |SSL_get_error| will then
+// return |SSL_ERROR_PENDING_SESSION| and the handshake can be retried later
+// when the lookup has completed.
+OPENSSL_EXPORT SSL_SESSION *SSL_magic_pending_session_ptr(void);
+
+
+// Session tickets.
+//
+// Session tickets, from RFC 5077, allow session resumption without server-side
+// state. The server maintains a secret ticket key and sends the client opaque
+// encrypted session parameters, called a ticket. When offering the session, the
+// client sends the ticket which the server decrypts to recover session state.
+// Session tickets are enabled by default but may be disabled with
+// |SSL_OP_NO_TICKET|.
+//
+// On the client, ticket-based sessions use the same APIs as ID-based tickets.
+// Callers do not need to handle them differently.
+//
+// On the server, tickets are encrypted and authenticated with a secret key.
+// By default, an |SSL_CTX| will manage session ticket encryption keys by
+// generating them internally and rotating every 48 hours. Tickets are minted
+// and processed transparently. The following functions may be used to configure
+// a persistent key or implement more custom behavior, including key rotation
+// and sharing keys between multiple servers in a large deployment. There are
+// three levels of customisation possible:
+//
+// 1) One can simply set the keys with |SSL_CTX_set_tlsext_ticket_keys|.
+// 2) One can configure an |EVP_CIPHER_CTX| and |HMAC_CTX| directly for
+//    encryption and authentication.
+// 3) One can configure an |SSL_TICKET_AEAD_METHOD| to have more control
+//    and the option of asynchronous decryption.
+//
+// An attacker that compromises a server's session ticket key can impersonate
+// the server and, prior to TLS 1.3, retroactively decrypt all application
+// traffic from sessions using that ticket key. Thus ticket keys must be
+// regularly rotated for forward secrecy. Note the default key is rotated
+// automatically once every 48 hours but manually configured keys are not.
+
+// SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL is the interval with which the
+// default session ticket encryption key is rotated, if in use. If any
+// non-default ticket encryption mechanism is configured, automatic rotation is
+// disabled.
+#define SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL (2 * 24 * 60 * 60)
+
+// SSL_CTX_get_tlsext_ticket_keys writes |ctx|'s session ticket key material to
+// |len| bytes of |out|. It returns one on success and zero if |len| is not
+// 48. If |out| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out,
+                                                  size_t len);
+
+// SSL_CTX_set_tlsext_ticket_keys sets |ctx|'s session ticket key material to
+// |len| bytes of |in|. It returns one on success and zero if |len| is not
+// 48. If |in| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in,
+                                                  size_t len);
+
+// SSL_TICKET_KEY_NAME_LEN is the length of the key name prefix of a session
+// ticket.
+#define SSL_TICKET_KEY_NAME_LEN 16
+
+// SSL_CTX_set_tlsext_ticket_key_cb sets the ticket callback to |callback| and
+// returns one. |callback| will be called when encrypting a new ticket and when
+// decrypting a ticket from the client.
+//
+// In both modes, |ctx| and |hmac_ctx| will already have been initialized with
+// |EVP_CIPHER_CTX_init| and |HMAC_CTX_init|, respectively. |callback|
+// configures |hmac_ctx| with an HMAC digest and key, and configures |ctx|
+// for encryption or decryption, based on the mode.
+//
+// When encrypting a new ticket, |encrypt| will be one. It writes a public
+// 16-byte key name to |key_name| and a fresh IV to |iv|. The output IV length
+// must match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns 1 on success and -1 on error.
+//
+// When decrypting a ticket, |encrypt| will be zero. |key_name| will point to a
+// 16-byte key name and |iv| points to an IV. The length of the IV consumed must
+// match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns -1 to abort the handshake, 0 if decrypting the ticket
+// failed, and 1 or 2 on success. If it returns 2, the ticket will be renewed.
+// This may be used to re-key the ticket.
+//
+// WARNING: |callback| wildly breaks the usual return value convention and is
+// called in two different modes.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_key_cb(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
+                                  EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
+                                  int encrypt));
+
+// ssl_ticket_aead_result_t enumerates the possible results from decrypting a
+// ticket with an |SSL_TICKET_AEAD_METHOD|.
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT {
+  // ssl_ticket_aead_success indicates that the ticket was successfully
+  // decrypted.
+  ssl_ticket_aead_success,
+  // ssl_ticket_aead_retry indicates that the operation could not be
+  // immediately completed and must be reattempted, via |open|, at a later
+  // point.
+  ssl_ticket_aead_retry,
+  // ssl_ticket_aead_ignore_ticket indicates that the ticket should be ignored
+  // (i.e. is corrupt or otherwise undecryptable).
+  ssl_ticket_aead_ignore_ticket,
+  // ssl_ticket_aead_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_ticket_aead_error,
+};
+
+// ssl_ticket_aead_method_st (aka |SSL_TICKET_AEAD_METHOD|) contains methods
+// for encrypting and decrypting session tickets.
+struct ssl_ticket_aead_method_st {
+  // max_overhead returns the maximum number of bytes of overhead that |seal|
+  // may add.
+  size_t (*max_overhead)(SSL *ssl);
+
+  // seal encrypts and authenticates |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes to |out|, and puts the number of bytes written in
+  // |*out_len|. The |in| and |out| buffers may be equal but will not otherwise
+  // alias. It returns one on success or zero on error.
+  int (*seal)(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out_len,
+              const uint8_t *in, size_t in_len);
+
+  // open authenticates and decrypts |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes of plaintext to |out|, and puts the number of bytes
+  // written in |*out_len|. The |in| and |out| buffers may be equal but will
+  // not otherwise alias. See |ssl_ticket_aead_result_t| for details of the
+  // return values. In the case that a retry is indicated, the caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in another call to |open|.
+  enum ssl_ticket_aead_result_t (*open)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out_len, const uint8_t *in,
+                                        size_t in_len);
+};
+
+// SSL_CTX_set_ticket_aead_method configures a custom ticket AEAD method table
+// on |ctx|. |aead_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_ticket_aead_method(
+    SSL_CTX *ctx, const SSL_TICKET_AEAD_METHOD *aead_method);
+
+
+// Elliptic curve Diffie-Hellman.
+//
+// Cipher suites using an ECDHE key exchange perform Diffie-Hellman over an
+// elliptic curve negotiated by both endpoints. See RFC 4492. Only named curves
+// are supported. ECDHE is always enabled, but the curve preferences may be
+// configured with these functions.
+//
+// Note that TLS 1.3 renames these from curves to groups. For consistency, we
+// currently use the TLS 1.2 name in the API.
+
+// SSL_CTX_set1_curves sets the preferred curves for |ctx| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves,
+                                       size_t curves_len);
+
+// SSL_set1_curves sets the preferred curves for |ssl| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_set1_curves(SSL *ssl, const int *curves,
+                                   size_t curves_len);
+
+// SSL_CTX_set1_curves_list sets the preferred curves for |ctx| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_CTX_set1_curves_list(SSL_CTX *ctx, const char *curves);
+
+// SSL_set1_curves_list sets the preferred curves for |ssl| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set1_curves_list(SSL *ssl, const char *curves);
+
+// SSL_CURVE_* define TLS curve IDs.
+#define SSL_CURVE_SECP224R1 21
+#define SSL_CURVE_SECP256R1 23
+#define SSL_CURVE_SECP384R1 24
+#define SSL_CURVE_SECP521R1 25
+#define SSL_CURVE_X25519 29
+#define SSL_CURVE_CECPQ2 16696
+
+// SSL_get_curve_id returns the ID of the curve used by |ssl|'s most recently
+// completed handshake or 0 if not applicable.
+//
+// TODO(davidben): This API currently does not work correctly if there is a
+// renegotiation in progress. Fix this.
+OPENSSL_EXPORT uint16_t SSL_get_curve_id(const SSL *ssl);
+
+// SSL_get_curve_name returns a human-readable name for the curve specified by
+// the given TLS curve id, or NULL if the curve is unknown.
+OPENSSL_EXPORT const char *SSL_get_curve_name(uint16_t curve_id);
+
+
+// Certificate verification.
+//
+// SSL may authenticate either endpoint with an X.509 certificate. Typically
+// this is used to authenticate the server to the client. These functions
+// configure certificate verification.
+//
+// WARNING: By default, certificate verification errors on a client are not
+// fatal. See |SSL_VERIFY_NONE| This may be configured with
+// |SSL_CTX_set_verify|.
+//
+// By default clients are anonymous but a server may request a certificate from
+// the client by setting |SSL_VERIFY_PEER|.
+//
+// Many of these functions use OpenSSL's legacy X.509 stack which is
+// underdocumented and deprecated, but the replacement isn't ready yet. For
+// now, consumers may use the existing stack or bypass it by performing
+// certificate verification externally. This may be done with
+// |SSL_CTX_set_cert_verify_callback| or by extracting the chain with
+// |SSL_get_peer_cert_chain| after the handshake. In the future, functions will
+// be added to use the SSL stack without dependency on any part of the legacy
+// X.509 and ASN.1 stack.
+//
+// To augment certificate verification, a client may also enable OCSP stapling
+// (RFC 6066) and Certificate Transparency (RFC 6962) extensions.
+
+// SSL_VERIFY_NONE, on a client, verifies the server certificate but does not
+// make errors fatal. The result may be checked with |SSL_get_verify_result|. On
+// a server it does not request a client certificate. This is the default.
+#define SSL_VERIFY_NONE 0x00
+
+// SSL_VERIFY_PEER, on a client, makes server certificate errors fatal. On a
+// server it requests a client certificate and makes errors fatal. However,
+// anonymous clients are still allowed. See
+// |SSL_VERIFY_FAIL_IF_NO_PEER_CERT|.
+#define SSL_VERIFY_PEER 0x01
+
+// SSL_VERIFY_FAIL_IF_NO_PEER_CERT configures a server to reject connections if
+// the client declines to send a certificate. This flag must be used together
+// with |SSL_VERIFY_PEER|, otherwise it won't work.
+#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
+
+// SSL_VERIFY_PEER_IF_NO_OBC configures a server to request a client certificate
+// if and only if Channel ID is not negotiated.
+#define SSL_VERIFY_PEER_IF_NO_OBC 0x04
+
+// SSL_CTX_set_verify configures certificate verification behavior. |mode| is
+// one of the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is
+// used to customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_verify(
+    SSL_CTX *ctx, int mode, int (*callback)(int ok, X509_STORE_CTX *store_ctx));
+
+// SSL_set_verify configures certificate verification behavior. |mode| is one of
+// the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is used to
+// customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_set_verify(SSL *ssl, int mode,
+                                   int (*callback)(int ok,
+                                                   X509_STORE_CTX *store_ctx));
+
+enum ssl_verify_result_t BORINGSSL_ENUM_INT {
+  ssl_verify_ok,
+  ssl_verify_invalid,
+  ssl_verify_retry,
+};
+
+// SSL_CTX_set_custom_verify configures certificate verification. |mode| is one
+// of the |SSL_VERIFY_*| values defined above. |callback| performs the
+// certificate verification.
+//
+// The callback may call |SSL_get0_peer_certificates| for the certificate chain
+// to validate. The callback should return |ssl_verify_ok| if the certificate is
+// valid. If the certificate is invalid, the callback should return
+// |ssl_verify_invalid| and optionally set |*out_alert| to an alert to send to
+// the peer. Some useful alerts include |SSL_AD_CERTIFICATE_EXPIRED|,
+// |SSL_AD_CERTIFICATE_REVOKED|, |SSL_AD_UNKNOWN_CA|, |SSL_AD_BAD_CERTIFICATE|,
+// |SSL_AD_CERTIFICATE_UNKNOWN|, and |SSL_AD_INTERNAL_ERROR|. See RFC 5246
+// section 7.2.2 for their precise meanings. If unspecified,
+// |SSL_AD_CERTIFICATE_UNKNOWN| will be sent by default.
+//
+// To verify a certificate asynchronously, the callback may return
+// |ssl_verify_retry|. The handshake will then pause with |SSL_get_error|
+// returning |SSL_ERROR_WANT_CERTIFICATE_VERIFY|.
+OPENSSL_EXPORT void SSL_CTX_set_custom_verify(
+    SSL_CTX *ctx, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_set_custom_verify behaves like |SSL_CTX_set_custom_verify| but configures
+// an individual |SSL|.
+OPENSSL_EXPORT void SSL_set_custom_verify(
+    SSL *ssl, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_CTX_get_verify_mode returns |ctx|'s verify mode, set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
+
+// SSL_get_verify_mode returns |ssl|'s verify mode, set by |SSL_CTX_set_verify|
+// or |SSL_set_verify|.  It returns -1 on error.
+OPENSSL_EXPORT int SSL_get_verify_mode(const SSL *ssl);
+
+// SSL_CTX_get_verify_callback returns the callback set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_get_verify_callback returns the callback set by |SSL_CTX_set_verify| or
+// |SSL_set_verify|.
+OPENSSL_EXPORT int (*SSL_get_verify_callback(const SSL *ssl))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_CTX_set_verify_depth sets the maximum depth of a certificate chain
+// accepted in verification. This number does not include the leaf, so a depth
+// of 1 allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
+
+// SSL_set_verify_depth sets the maximum depth of a certificate chain accepted
+// in verification. This number does not include the leaf, so a depth of 1
+// allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_set_verify_depth(SSL *ssl, int depth);
+
+// SSL_CTX_get_verify_depth returns the maximum depth of a certificate accepted
+// in verification.
+OPENSSL_EXPORT int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
+
+// SSL_get_verify_depth returns the maximum depth of a certificate accepted in
+// verification.
+OPENSSL_EXPORT int SSL_get_verify_depth(const SSL *ssl);
+
+// SSL_CTX_set1_param sets verification parameters from |param|. It returns one
+// on success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_CTX_set1_param(SSL_CTX *ctx,
+                                      const X509_VERIFY_PARAM *param);
+
+// SSL_set1_param sets verification parameters from |param|. It returns one on
+// success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_set1_param(SSL *ssl,
+                                  const X509_VERIFY_PARAM *param);
+
+// SSL_CTX_get0_param returns |ctx|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
+
+// SSL_get0_param returns |ssl|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
+
+// SSL_CTX_set_purpose sets |ctx|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
+
+// SSL_set_purpose sets |ssl|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_purpose(SSL *ssl, int purpose);
+
+// SSL_CTX_set_trust sets |ctx|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
+
+// SSL_set_trust sets |ssl|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_trust(SSL *ssl, int trust);
+
+// SSL_CTX_set_cert_store sets |ctx|'s certificate store to |store|. It takes
+// ownership of |store|. The store is used for certificate verification.
+//
+// The store is also used for the auto-chaining feature, but this is deprecated.
+// See also |SSL_MODE_NO_AUTO_CHAIN|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store);
+
+// SSL_CTX_get_cert_store returns |ctx|'s certificate store.
+OPENSSL_EXPORT X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_verify_paths loads the OpenSSL system-default trust
+// anchors into |ctx|'s store. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
+
+// SSL_CTX_load_verify_locations loads trust anchors into |ctx|'s store from
+// |ca_file| and |ca_dir|, either of which may be NULL. If |ca_file| is passed,
+// it is opened and PEM-encoded CA certificates are read. If |ca_dir| is passed,
+// it is treated as a directory in OpenSSL's hashed directory format. It returns
+// one on success and zero on failure.
+//
+// See
+// https://www.openssl.org/docs/manmaster/ssl/SSL_CTX_load_verify_locations.html
+// for documentation on the directory format.
+OPENSSL_EXPORT int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
+                                                 const char *ca_file,
+                                                 const char *ca_dir);
+
+// SSL_get_verify_result returns the result of certificate verification. It is
+// either |X509_V_OK| or a |X509_V_ERR_*| value.
+OPENSSL_EXPORT long SSL_get_verify_result(const SSL *ssl);
+
+// SSL_alert_from_verify_result returns the SSL alert code, such as
+// |SSL_AD_CERTIFICATE_EXPIRED|, that corresponds to an |X509_V_ERR_*| value.
+// The return value is always an alert, even when |result| is |X509_V_OK|.
+OPENSSL_EXPORT int SSL_alert_from_verify_result(long result);
+
+// SSL_get_ex_data_X509_STORE_CTX_idx returns the ex_data index used to look up
+// the |SSL| associated with an |X509_STORE_CTX| in the verify callback.
+OPENSSL_EXPORT int SSL_get_ex_data_X509_STORE_CTX_idx(void);
+
+// SSL_CTX_set_cert_verify_callback sets a custom callback to be called on
+// certificate verification rather than |X509_verify_cert|. |store_ctx| contains
+// the verification parameters. The callback should return one on success and
+// zero on fatal error. It may use |X509_STORE_CTX_set_error| to set a
+// verification result.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| to recover the
+// |SSL| object from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_verify_callback(
+    SSL_CTX *ctx, int (*callback)(X509_STORE_CTX *store_ctx, void *arg),
+    void *arg);
+
+// SSL_enable_signed_cert_timestamps causes |ssl| (which must be the client end
+// of a connection) to request SCTs from the server. See
+// https://tools.ietf.org/html/rfc6962.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_signed_cert_timestamps(SSL *ssl);
+
+// SSL_CTX_enable_signed_cert_timestamps enables SCT requests on all client SSL
+// objects created from |ctx|.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx);
+
+// SSL_enable_ocsp_stapling causes |ssl| (which must be the client end of a
+// connection) to request a stapled OCSP response from the server.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_ocsp_stapling(SSL *ssl);
+
+// SSL_CTX_enable_ocsp_stapling enables OCSP stapling on all client SSL objects
+// created from |ctx|.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx);
+
+// SSL_CTX_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL_CTX|.
+OPENSSL_EXPORT int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_CTX_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL|.
+OPENSSL_EXPORT int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_CTX_set_ed25519_enabled configures whether |ctx| advertises support for
+// the Ed25519 signature algorithm when using the default preference list. It is
+// disabled by default and may be enabled if the certificate verifier supports
+// Ed25519.
+OPENSSL_EXPORT void SSL_CTX_set_ed25519_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_CTX_set_verify_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when verifying signature's from the peer's long-term key. It
+// returns one on zero on error. |prefs| should not include the internal-only
+// value |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_verify_algorithm_prefs(SSL_CTX *ctx,
+                                                      const uint16_t *prefs,
+                                                      size_t num_prefs);
+
+
+// Client certificate CA list.
+//
+// When requesting a client certificate, a server may advertise a list of
+// certificate authorities which are accepted. These functions may be used to
+// configure this list.
+
+// SSL_set_client_CA_list sets |ssl|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set_client_CA_list(SSL *ssl,
+                                           STACK_OF(X509_NAME) *name_list);
+
+// SSL_CTX_set_client_CA_list sets |ctx|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,
+                                               STACK_OF(X509_NAME) *name_list);
+
+// SSL_set0_client_CAs sets |ssl|'s client certificate CA list to |name_list|,
+// which should contain DER-encoded distinguished names (RFC 5280). It takes
+// ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set0_client_CAs(SSL *ssl,
+                                        STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_CTX_set0_client_CAs sets |ctx|'s client certificate CA list to
+// |name_list|, which should contain DER-encoded distinguished names (RFC 5280).
+// It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set0_client_CAs(SSL_CTX *ctx,
+                                            STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_get_client_CA_list returns |ssl|'s client certificate CA list. If |ssl|
+// has not been configured as a client, this is the list configured by
+// |SSL_CTX_set_client_CA_list|.
+//
+// If configured as a client, it returns the client certificate CA list sent by
+// the server. In this mode, the behavior is undefined except during the
+// callbacks set by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or
+// when the handshake is paused because of them.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl);
+
+// SSL_get0_server_requested_CAs returns the CAs sent by a server to guide a
+// client in certificate selection. They are a series of DER-encoded X.509
+// names. This function may only be called during a callback set by
+// |SSL_CTX_set_cert_cb| or when the handshake is paused because of it.
+//
+// The returned stack is owned by |ssl|, as are its contents. It should not be
+// used past the point where the handshake is restarted after the callback.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_server_requested_CAs(const SSL *ssl);
+
+// SSL_CTX_get_client_CA_list returns |ctx|'s client certificate CA list.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *
+    SSL_CTX_get_client_CA_list(const SSL_CTX *ctx);
+
+// SSL_add_client_CA appends |x509|'s subject to the client certificate CA list.
+// It returns one on success or zero on error. The caller retains ownership of
+// |x509|.
+OPENSSL_EXPORT int SSL_add_client_CA(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_client_CA appends |x509|'s subject to the client certificate CA
+// list. It returns one on success or zero on error. The caller retains
+// ownership of |x509|.
+OPENSSL_EXPORT int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509);
+
+// SSL_load_client_CA_file opens |file| and reads PEM-encoded certificates from
+// it. It returns a newly-allocated stack of the certificate subjects or NULL
+// on error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
+
+// SSL_dup_CA_list makes a deep copy of |list|. It returns the new list on
+// success or NULL on allocation error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list);
+
+// SSL_add_file_cert_subjects_to_stack behaves like |SSL_load_client_CA_file|
+// but appends the result to |out|. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                       const char *file);
+
+
+// Server name indication.
+//
+// The server_name extension (RFC 3546) allows the client to advertise the name
+// of the server it is connecting to. This is used in virtual hosting
+// deployments to select one of a several certificates on a single IP. Only the
+// host_name name type is supported.
+
+#define TLSEXT_NAMETYPE_host_name 0
+
+// SSL_set_tlsext_host_name, for a client, configures |ssl| to advertise |name|
+// in the server_name extension. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_tlsext_host_name(SSL *ssl, const char *name);
+
+// SSL_get_servername, for a server, returns the hostname supplied by the
+// client or NULL if there was none. The |type| argument must be
+// |TLSEXT_NAMETYPE_host_name|.
+OPENSSL_EXPORT const char *SSL_get_servername(const SSL *ssl, const int type);
+
+// SSL_get_servername_type, for a server, returns |TLSEXT_NAMETYPE_host_name|
+// if the client sent a hostname and -1 otherwise.
+OPENSSL_EXPORT int SSL_get_servername_type(const SSL *ssl);
+
+// SSL_CTX_set_tlsext_servername_callback configures |callback| to be called on
+// the server after ClientHello extensions have been parsed and returns one.
+// The callback may use |SSL_get_servername| to examine the server_name
+// extension and returns a |SSL_TLSEXT_ERR_*| value. The value of |arg| may be
+// set by calling |SSL_CTX_set_tlsext_servername_arg|.
+//
+// If the callback returns |SSL_TLSEXT_ERR_NOACK|, the server_name extension is
+// not acknowledged in the ServerHello. If the return value is
+// |SSL_TLSEXT_ERR_ALERT_FATAL|, then |*out_alert| is the alert to send,
+// defaulting to |SSL_AD_UNRECOGNIZED_NAME|. |SSL_TLSEXT_ERR_ALERT_WARNING| is
+// ignored and treated as |SSL_TLSEXT_ERR_OK|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_callback(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg));
+
+// SSL_CTX_set_tlsext_servername_arg sets the argument to the servername
+// callback and returns one. See |SSL_CTX_set_tlsext_servername_callback|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_TLSEXT_ERR_* are values returned by some extension-related callbacks.
+#define SSL_TLSEXT_ERR_OK 0
+#define SSL_TLSEXT_ERR_ALERT_WARNING 1
+#define SSL_TLSEXT_ERR_ALERT_FATAL 2
+#define SSL_TLSEXT_ERR_NOACK 3
+
+// SSL_set_SSL_CTX changes |ssl|'s |SSL_CTX|. |ssl| will use the
+// certificate-related settings from |ctx|, and |SSL_get_SSL_CTX| will report
+// |ctx|. This function may be used during the callbacks registered by
+// |SSL_CTX_set_select_certificate_cb|,
+// |SSL_CTX_set_tlsext_servername_callback|, and |SSL_CTX_set_cert_cb| or when
+// the handshake is paused from them. It is typically used to switch
+// certificates based on SNI.
+//
+// Note the session cache and related settings will continue to use the initial
+// |SSL_CTX|. Callers should use |SSL_CTX_set_session_id_context| to partition
+// the session cache between different domains.
+//
+// TODO(davidben): Should other settings change after this call?
+OPENSSL_EXPORT SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
+
+
+// Application-layer protocol negotiation.
+//
+// The ALPN extension (RFC 7301) allows negotiating different application-layer
+// protocols over a single port. This is used, for example, to negotiate
+// HTTP/2.
+
+// SSL_CTX_set_alpn_protos sets the client ALPN protocol list on |ctx| to
+// |protos|. |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
+                                           unsigned protos_len);
+
+// SSL_set_alpn_protos sets the client ALPN protocol list on |ssl| to |protos|.
+// |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos,
+                                       unsigned protos_len);
+
+// SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
+// during ClientHello processing in order to select an ALPN protocol from the
+// client's list of offered protocols. Configuring this callback enables ALPN on
+// a server.
+//
+// The callback is passed a wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings) ALPN protocol list in |in|. It should set |*out| and
+// |*out_len| to the selected protocol and return |SSL_TLSEXT_ERR_OK| on
+// success. It does not pass ownership of the buffer. Otherwise, it should
+// return |SSL_TLSEXT_ERR_NOACK|. Other |SSL_TLSEXT_ERR_*| values are
+// unimplemented and will be treated as |SSL_TLSEXT_ERR_NOACK|.
+//
+// The cipher suite is selected before negotiating ALPN. The callback may use
+// |SSL_get_pending_cipher| to query the cipher suite.
+OPENSSL_EXPORT void SSL_CTX_set_alpn_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, const uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
+// On return it sets |*out_data| to point to |*out_len| bytes of protocol name
+// (not including the leading length-prefix byte). If the server didn't respond
+// with a negotiated protocol then |*out_len| will be zero.
+OPENSSL_EXPORT void SSL_get0_alpn_selected(const SSL *ssl,
+                                           const uint8_t **out_data,
+                                           unsigned *out_len);
+
+// SSL_CTX_set_allow_unknown_alpn_protos configures client connections on |ctx|
+// to allow unknown ALPN protocols from the server. Otherwise, by default, the
+// client will require that the protocol be advertised in
+// |SSL_CTX_set_alpn_protos|.
+OPENSSL_EXPORT void SSL_CTX_set_allow_unknown_alpn_protos(SSL_CTX *ctx,
+                                                          int enabled);
+
+
+// Certificate compression.
+//
+// Certificates in TLS 1.3 can be compressed[1]. BoringSSL supports this as both
+// a client and a server, but does not link against any specific compression
+// libraries in order to keep dependencies to a minimum. Instead, hooks for
+// compression and decompression can be installed in an |SSL_CTX| to enable
+// support.
+//
+// [1] https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03.
+
+// ssl_cert_compression_func_t is a pointer to a function that performs
+// compression. It must write the compressed representation of |in| to |out|,
+// returning one on success and zero on error. The results of compressing
+// certificates are not cached internally. Implementations may wish to implement
+// their own cache if they expect it to be useful given the certificates that
+// they serve.
+typedef int (*ssl_cert_compression_func_t)(SSL *ssl, CBB *out,
+                                           const uint8_t *in, size_t in_len);
+
+// ssl_cert_decompression_func_t is a pointer to a function that performs
+// decompression. The compressed data from the peer is passed as |in| and the
+// decompressed result must be exactly |uncompressed_len| bytes long. It returns
+// one on success, in which case |*out| must be set to the result of
+// decompressing |in|, or zero on error. Setting |*out| transfers ownership,
+// i.e. |CRYPTO_BUFFER_free| will be called on |*out| at some point in the
+// future. The results of decompressions are not cached internally.
+// Implementations may wish to implement their own cache if they expect it to be
+// useful.
+typedef int (*ssl_cert_decompression_func_t)(SSL *ssl, CRYPTO_BUFFER **out,
+                                             size_t uncompressed_len,
+                                             const uint8_t *in, size_t in_len);
+
+// SSL_CTX_add_cert_compression_alg registers a certificate compression
+// algorithm on |ctx| with ID |alg_id|. (The value of |alg_id| should be an IANA
+// assigned value and each can only be registered once.)
+//
+// One of the function pointers may be NULL to avoid having to implement both
+// sides of a compression algorithm if you're only going to use it in one
+// direction. In this case, the unimplemented direction acts like it was never
+// configured.
+//
+// For a server, algorithms are registered in preference order with the most
+// preferable first. It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_CTX_add_cert_compression_alg(
+    SSL_CTX *ctx, uint16_t alg_id, ssl_cert_compression_func_t compress,
+    ssl_cert_decompression_func_t decompress);
+
+
+// Next protocol negotiation.
+//
+// The NPN extension (draft-agl-tls-nextprotoneg-03) is the predecessor to ALPN
+// and deprecated in favor of it.
+
+// SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
+// TLS server needs a list of supported protocols for Next Protocol
+// Negotiation. The returned list must be in wire format. The list is returned
+// by setting |*out| to point to it and |*out_len| to its length. This memory
+// will not be modified, but one should assume that |ssl| keeps a reference to
+// it.
+//
+// The callback should return |SSL_TLSEXT_ERR_OK| if it wishes to advertise.
+// Otherwise, no such extension will be included in the ServerHello.
+OPENSSL_EXPORT void SSL_CTX_set_next_protos_advertised_cb(
+    SSL_CTX *ctx,
+    int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
+    void *arg);
+
+// SSL_CTX_set_next_proto_select_cb sets a callback that is called when a client
+// needs to select a protocol from the server's provided list. |*out| must be
+// set to point to the selected protocol (which may be within |in|). The length
+// of the protocol name must be written into |*out_len|. The server's advertised
+// protocols are provided in |in| and |in_len|. The callback can assume that
+// |in| is syntactically valid.
+//
+// The client must select a protocol. It is fatal to the connection if this
+// callback returns a value other than |SSL_TLSEXT_ERR_OK|.
+//
+// Configuring this callback enables NPN on a client.
+OPENSSL_EXPORT void SSL_CTX_set_next_proto_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_next_proto_negotiated sets |*out_data| and |*out_len| to point to
+// the client's requested protocol for this connection. If the client didn't
+// request any protocol, then |*out_data| is set to NULL.
+//
+// Note that the client can request any protocol it chooses. The value returned
+// from this function need not be a member of the list of supported protocols
+// provided by the server.
+OPENSSL_EXPORT void SSL_get0_next_proto_negotiated(const SSL *ssl,
+                                                   const uint8_t **out_data,
+                                                   unsigned *out_len);
+
+// SSL_select_next_proto implements the standard protocol selection. It is
+// expected that this function is called from the callback set by
+// |SSL_CTX_set_next_proto_select_cb|.
+//
+// |peer| and |supported| must be vectors of 8-bit, length-prefixed byte strings
+// containing the peer and locally-configured protocols, respectively. The
+// length byte itself is not included in the length. A byte string of length 0
+// is invalid. No byte string may be truncated. |supported| is assumed to be
+// non-empty.
+//
+// This function finds the first protocol in |peer| which is also in
+// |supported|. If one was found, it sets |*out| and |*out_len| to point to it
+// and returns |OPENSSL_NPN_NEGOTIATED|. Otherwise, it returns
+// |OPENSSL_NPN_NO_OVERLAP| and sets |*out| and |*out_len| to the first
+// supported protocol.
+OPENSSL_EXPORT int SSL_select_next_proto(uint8_t **out, uint8_t *out_len,
+                                         const uint8_t *peer, unsigned peer_len,
+                                         const uint8_t *supported,
+                                         unsigned supported_len);
+
+#define OPENSSL_NPN_UNSUPPORTED 0
+#define OPENSSL_NPN_NEGOTIATED 1
+#define OPENSSL_NPN_NO_OVERLAP 2
+
+
+// Channel ID.
+//
+// See draft-balfanz-tls-channelid-01.
+
+// SSL_CTX_set_tls_channel_id_enabled configures whether connections associated
+// with |ctx| should enable Channel ID.
+OPENSSL_EXPORT void SSL_CTX_set_tls_channel_id_enabled(SSL_CTX *ctx,
+                                                       int enabled);
+
+// SSL_set_tls_channel_id_enabled configures whether |ssl| should enable Channel
+// ID.
+OPENSSL_EXPORT void SSL_set_tls_channel_id_enabled(SSL *ssl, int enabled);
+
+// SSL_CTX_set1_tls_channel_id configures a TLS client to send a TLS Channel ID
+// to compatible servers. |private_key| must be a P-256 EC key. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx,
+                                               EVP_PKEY *private_key);
+
+// SSL_set1_tls_channel_id configures a TLS client to send a TLS Channel ID to
+// compatible servers. |private_key| must be a P-256 EC key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key);
+
+// SSL_get_tls_channel_id gets the client's TLS Channel ID from a server |SSL*|
+// and copies up to the first |max_out| bytes into |out|. The Channel ID
+// consists of the client's P-256 public key as an (x,y) pair where each is a
+// 32-byte, big-endian field element. It returns 0 if the client didn't offer a
+// Channel ID and the length of the complete Channel ID otherwise.
+OPENSSL_EXPORT size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out,
+                                             size_t max_out);
+
+// SSL_CTX_set_channel_id_cb sets a callback to be called when a TLS Channel ID
+// is requested. The callback may set |*out_pkey| to a key, passing a reference
+// to the caller. If none is returned, the handshake will pause and
+// |SSL_get_error| will return |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+//
+// See also |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+OPENSSL_EXPORT void SSL_CTX_set_channel_id_cb(
+    SSL_CTX *ctx, void (*channel_id_cb)(SSL *ssl, EVP_PKEY **out_pkey));
+
+// SSL_CTX_get_channel_id_cb returns the callback set by
+// |SSL_CTX_set_channel_id_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(
+    SSL *ssl, EVP_PKEY **out_pkey);
+
+
+// Token Binding.
+//
+// See draft-ietf-tokbind-protocol-16.
+
+// SSL_set_token_binding_params sets |params| as the Token Binding Key
+// parameters (section 3 of draft-ietf-tokbind-protocol-16) to negotiate on the
+// connection. If this function is not called, or if |len| is 0, then this
+// endpoint will not attempt to negotiate Token Binding. |params| are provided
+// in preference order, with the more preferred parameters at the beginning of
+// the list. This function returns 1 on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_token_binding_params(SSL *ssl, const uint8_t *params,
+                                                size_t len);
+
+// SSL_is_token_binding_negotiated returns 1 if Token Binding was negotiated
+// on this connection and 0 otherwise. On a server, it is possible for this
+// function to return 1 when the client's view of the connection is that Token
+// Binding was not negotiated. This occurs when the server indicates a version
+// of Token Binding less than the client's minimum version.
+OPENSSL_EXPORT int SSL_is_token_binding_negotiated(const SSL *ssl);
+
+// SSL_get_negotiated_token_binding_param returns the TokenBindingKeyParameters
+// enum value that was negotiated. It is only valid to call this function if
+// SSL_is_token_binding_negotiated returned 1, otherwise this function returns
+// an undefined value.
+OPENSSL_EXPORT uint8_t SSL_get_negotiated_token_binding_param(const SSL *ssl);
+
+
+// DTLS-SRTP.
+//
+// See RFC 5764.
+
+// srtp_protection_profile_st (aka |SRTP_PROTECTION_PROFILE|) is an SRTP
+// profile for use with the use_srtp extension.
+struct srtp_protection_profile_st {
+  const char *name;
+  unsigned long id;
+} /* SRTP_PROTECTION_PROFILE */;
+
+DEFINE_CONST_STACK_OF(SRTP_PROTECTION_PROFILE)
+
+// SRTP_* define constants for SRTP profiles.
+#define SRTP_AES128_CM_SHA1_80 0x0001
+#define SRTP_AES128_CM_SHA1_32 0x0002
+#define SRTP_AES128_F8_SHA1_80 0x0003
+#define SRTP_AES128_F8_SHA1_32 0x0004
+#define SRTP_NULL_SHA1_80      0x0005
+#define SRTP_NULL_SHA1_32      0x0006
+#define SRTP_AEAD_AES_128_GCM  0x0007
+#define SRTP_AEAD_AES_256_GCM  0x0008
+
+// SSL_CTX_set_srtp_profiles enables SRTP for all SSL objects created from
+// |ctx|. |profile| contains a colon-separated list of profile names. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx,
+                                             const char *profiles);
+
+// SSL_set_srtp_profiles enables SRTP for |ssl|.  |profile| contains a
+// colon-separated list of profile names. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set_srtp_profiles(SSL *ssl, const char *profiles);
+
+// SSL_get_srtp_profiles returns the SRTP profiles supported by |ssl|.
+OPENSSL_EXPORT STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(
+    SSL *ssl);
+
+// SSL_get_selected_srtp_profile returns the selected SRTP profile, or NULL if
+// SRTP was not negotiated.
+OPENSSL_EXPORT const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(
+    SSL *ssl);
+
+
+// Pre-shared keys.
+//
+// Connections may be configured with PSK (Pre-Shared Key) cipher suites. These
+// authenticate using out-of-band pre-shared keys rather than certificates. See
+// RFC 4279.
+//
+// This implementation uses NUL-terminated C strings for identities and identity
+// hints, so values with a NUL character are not supported. (RFC 4279 does not
+// specify the format of an identity.)
+
+// PSK_MAX_IDENTITY_LEN is the maximum supported length of a PSK identity,
+// excluding the NUL terminator.
+#define PSK_MAX_IDENTITY_LEN 128
+
+// PSK_MAX_PSK_LEN is the maximum supported length of a pre-shared key.
+#define PSK_MAX_PSK_LEN 256
+
+// SSL_CTX_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client.
+//
+// The callback is passed the identity hint in |hint| or NULL if none was
+// provided. It should select a PSK identity and write the identity and the
+// corresponding PSK to |identity| and |psk|, respectively. The identity is
+// written as a NUL-terminated C string of length (excluding the NUL terminator)
+// at most |max_identity_len|. The PSK's length must be at most |max_psk_len|.
+// The callback returns the length of the PSK or 0 if no suitable identity was
+// found.
+OPENSSL_EXPORT void SSL_CTX_set_psk_client_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                                 unsigned max_identity_len, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client. See also |SSL_CTX_set_psk_client_callback|.
+OPENSSL_EXPORT void SSL_set_psk_client_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                             unsigned max_identity_len, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server.
+//
+// The callback is passed the identity in |identity|. It should write a PSK of
+// length at most |max_psk_len| to |psk| and return the number of bytes written
+// or zero if the PSK identity is unknown.
+OPENSSL_EXPORT void SSL_CTX_set_psk_server_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server. See also |SSL_CTX_set_psk_server_callback|.
+OPENSSL_EXPORT void SSL_set_psk_server_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx,
+                                                 const char *identity_hint);
+
+// SSL_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_use_psk_identity_hint(SSL *ssl,
+                                             const char *identity_hint);
+
+// SSL_get_psk_identity_hint returns the PSK identity hint advertised for |ssl|
+// or NULL if there is none.
+OPENSSL_EXPORT const char *SSL_get_psk_identity_hint(const SSL *ssl);
+
+// SSL_get_psk_identity, after the handshake completes, returns the PSK identity
+// that was negotiated by |ssl| or NULL if PSK was not used.
+OPENSSL_EXPORT const char *SSL_get_psk_identity(const SSL *ssl);
+
+
+// QUIC transport parameters.
+//
+// draft-ietf-quic-tls defines a new TLS extension quic_transport_parameters
+// used by QUIC for each endpoint to unilaterally declare its supported
+// transport parameters. draft-ietf-quic-transport (section 7.4) defines the
+// contents of that extension (a TransportParameters struct) and describes how
+// to handle it and its semantic meaning.
+//
+// BoringSSL handles this extension as an opaque byte string. The caller is
+// responsible for serializing and parsing it.
+
+// SSL_set_quic_transport_params configures |ssl| to send |params| (of length
+// |params_len|) in the quic_transport_parameters extension in either the
+// ClientHello or EncryptedExtensions handshake message. This extension will
+// only be sent if the TLS version is at least 1.3, and for a server, only if
+// the client sent the extension. The buffer pointed to by |params| only need be
+// valid for the duration of the call to this function. This function returns 1
+// on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_quic_transport_params(SSL *ssl,
+                                                 const uint8_t *params,
+                                                 size_t params_len);
+
+// SSL_get_peer_quic_transport_params provides the caller with the value of the
+// quic_transport_parameters extension sent by the peer. A pointer to the buffer
+// containing the TransportParameters will be put in |*out_params|, and its
+// length in |*params_len|. This buffer will be valid for the lifetime of the
+// |SSL|. If no params were received from the peer, |*out_params_len| will be 0.
+OPENSSL_EXPORT void SSL_get_peer_quic_transport_params(const SSL *ssl,
+                                                       const uint8_t **out_params,
+                                                       size_t *out_params_len);
+
+
+// Delegated credentials.
+//
+// *** EXPERIMENTAL — PRONE TO CHANGE ***
+//
+// draft-ietf-tls-subcerts is a proposed extension for TLS 1.3 and above that
+// allows an end point to use its certificate to delegate credentials for
+// authentication. If the peer indicates support for this extension, then this
+// host may use a delegated credential to sign the handshake. Once issued,
+// credentials can't be revoked. In order to mitigate the damage in case the
+// credential secret key is compromised, the credential is only valid for a
+// short time (days, hours, or even minutes). This library implements draft-03
+// of the protocol spec.
+//
+// The extension ID has not been assigned; we're using 0xff02 for the time
+// being. Currently only the server side is implemented.
+//
+// Servers configure a DC for use in the handshake via
+// |SSL_set1_delegated_credential|. It must be signed by the host's end-entity
+// certificate as defined in draft-ietf-tls-subcerts-03.
+
+// SSL_set1_delegated_credential configures the delegated credential (DC) that
+// will be sent to the peer for the current connection. |dc| is the DC in wire
+// format, and |pkey| or |key_method| is the corresponding private key.
+// Currently (as of draft-03), only servers may configure a DC to use in the
+// handshake.
+//
+// The DC will only be used if the protocol version is correct and the signature
+// scheme is supported by the peer. If not, the DC will not be negotiated and
+// the handshake will use the private key (or private key method) associated
+// with the certificate.
+OPENSSL_EXPORT int SSL_set1_delegated_credential(
+    SSL *ssl, CRYPTO_BUFFER *dc, EVP_PKEY *pkey,
+    const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_delegated_credential_used returns one if a delegated credential was used
+// and zero otherwise.
+OPENSSL_EXPORT int SSL_delegated_credential_used(const SSL *ssl);
+
+
+// QUIC integration.
+//
+// QUIC acts as an underlying transport for the TLS 1.3 handshake. The following
+// functions allow a QUIC implementation to serve as the underlying transport as
+// described in draft-ietf-quic-tls.
+//
+// When configured for QUIC, |SSL_do_handshake| will drive the handshake as
+// before, but it will not use the configured |BIO|. It will call functions on
+// |SSL_QUIC_METHOD| to configure secrets and send data. If data is needed from
+// the peer, it will return |SSL_ERROR_WANT_READ|. When received, the caller
+// should call |SSL_provide_quic_data| and then |SSL_do_handshake| to continue
+// the handshake. After the handshake is complete, the caller should call
+// |SSL_provide_quic_data| for any post-handshake data, followed by
+// |SSL_process_quic_post_handshake| to process it. It is an error to call
+// |SSL_read| and |SSL_write| in QUIC.
+//
+// 0-RTT behaves similarly to |TLS_method|'s usual behavior. |SSL_do_handshake|
+// returns early as soon as the client (respectively, server) is allowed to send
+// 0-RTT (respectively, half-RTT) data. The caller should then call
+// |SSL_do_handshake| again to consume the remaining handshake messages and
+// confirm the handshake. As a client, |SSL_ERROR_EARLY_DATA_REJECTED| and
+// |SSL_reset_early_data_reject| behave as usual.
+//
+// Note that secrets for an encryption level may be available to QUIC before the
+// level is active in TLS. Callers should use |SSL_quic_read_level| to determine
+// the active read level for |SSL_provide_quic_data|. |SSL_do_handshake| will
+// pass the active write level to |SSL_QUIC_METHOD| when writing data. Callers
+// can use |SSL_quic_write_level| to query the active write level when
+// generating their own errors.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-tls-15#section-4.1 for more
+// details.
+//
+// To avoid DoS attacks, the QUIC implementation must limit the amount of data
+// being queued up. The implementation can call
+// |SSL_quic_max_handshake_flight_len| to get the maximum buffer length at each
+// encryption level.
+//
+// Note: 0-RTT support is incomplete and does not currently handle QUIC
+// transport parameters and server SETTINGS frame.
+
+// ssl_encryption_level_t represents a specific QUIC encryption level used to
+// transmit handshake messages.
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT {
+  ssl_encryption_initial = 0,
+  ssl_encryption_early_data,
+  ssl_encryption_handshake,
+  ssl_encryption_application,
+};
+
+// ssl_quic_method_st (aka |SSL_QUIC_METHOD|) describes custom QUIC hooks.
+struct ssl_quic_method_st {
+  // set_encryption_secrets configures the read and write secrets for the given
+  // encryption level. This function will always be called before an encryption
+  // level other than |ssl_encryption_initial| is used. Note, however, that
+  // secrets for a level may be configured before TLS is ready to send or accept
+  // data at that level.
+  //
+  // When reading packets at a given level, the QUIC implementation must send
+  // ACKs at the same level, so this function provides read and write secrets
+  // together. The exception is |ssl_encryption_early_data|, where secrets are
+  // only available in the client to server direction. The other secret will be
+  // NULL. The server acknowledges such data at |ssl_encryption_application|,
+  // which will be configured in the same |SSL_do_handshake| call.
+  //
+  // This function should use |SSL_get_current_cipher| to determine the TLS
+  // cipher suite.
+  //
+  // It returns one on success and zero on error.
+  int (*set_encryption_secrets)(SSL *ssl, enum ssl_encryption_level_t level,
+                                const uint8_t *read_secret,
+                                const uint8_t *write_secret, size_t secret_len);
+  // add_handshake_data adds handshake data to the current flight at the given
+  // encryption level. It returns one on success and zero on error.
+  //
+  // BoringSSL will pack data from a single encryption level together, but a
+  // single handshake flight may include multiple encryption levels. Callers
+  // should defer writing data to the network until |flush_flight| to better
+  // pack QUIC packets into transport datagrams.
+  int (*add_handshake_data)(SSL *ssl, enum ssl_encryption_level_t level,
+                            const uint8_t *data, size_t len);
+  // flush_flight is called when the current flight is complete and should be
+  // written to the transport. Note a flight may contain data at several
+  // encryption levels. It returns one on success and zero on error.
+  int (*flush_flight)(SSL *ssl);
+  // send_alert sends a fatal alert at the specified encryption level. It
+  // returns one on success and zero on error.
+  int (*send_alert)(SSL *ssl, enum ssl_encryption_level_t level, uint8_t alert);
+};
+
+// SSL_quic_max_handshake_flight_len returns returns the maximum number of bytes
+// that may be received at the given encryption level. This function should be
+// used to limit buffering in the QUIC implementation.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-transport-16#section-4.4.
+OPENSSL_EXPORT size_t SSL_quic_max_handshake_flight_len(
+    const SSL *ssl, enum ssl_encryption_level_t level);
+
+// SSL_quic_read_level returns the current read encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_read_level(const SSL *ssl);
+
+// SSL_quic_write_level returns the current write encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_write_level(const SSL *ssl);
+
+// SSL_provide_quic_data provides data from QUIC at a particular encryption
+// level |level|. It is an error to call this function outside of the handshake
+// or with an encryption level other than the current read level. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_provide_quic_data(SSL *ssl,
+                                         enum ssl_encryption_level_t level,
+                                         const uint8_t *data, size_t len);
+
+
+// SSL_process_quic_post_handshake processes any data that QUIC has provided
+// after the handshake has completed. This includes NewSessionTicket messages
+// sent by the server. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_process_quic_post_handshake(SSL *ssl);
+
+// SSL_CTX_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ctx|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_quic_method(SSL_CTX *ctx,
+                                           const SSL_QUIC_METHOD *quic_method);
+
+// SSL_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ssl|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_quic_method(SSL *ssl,
+                                       const SSL_QUIC_METHOD *quic_method);
+
+
+// Early data.
+//
+// WARNING: 0-RTT support in BoringSSL is currently experimental and not fully
+// implemented. It may cause interoperability or security failures when used.
+//
+// Early data, or 0-RTT, is a feature in TLS 1.3 which allows clients to send
+// data on the first flight during a resumption handshake. This can save a
+// round-trip in some application protocols.
+//
+// WARNING: A 0-RTT handshake has different security properties from normal
+// handshake, so it is off by default unless opted in. In particular, early data
+// is replayable by a network attacker. Callers must account for this when
+// sending or processing data before the handshake is confirmed. See RFC 8446
+// for more information.
+//
+// As a server, if early data is accepted, |SSL_do_handshake| will complete as
+// soon as the ClientHello is processed and server flight sent. |SSL_write| may
+// be used to send half-RTT data. |SSL_read| will consume early data and
+// transition to 1-RTT data as appropriate. Prior to the transition,
+// |SSL_in_init| will report the handshake is still in progress. Callers may use
+// it or |SSL_in_early_data| to defer or reject requests as needed.
+//
+// Early data as a client is more complex. If the offered session (see
+// |SSL_set_session|) is 0-RTT-capable, the handshake will return after sending
+// the ClientHello. The predicted peer certificates and ALPN protocol will be
+// available via the usual APIs. |SSL_write| will write early data, up to the
+// session's limit. Writes past this limit and |SSL_read| will complete the
+// handshake before continuing. Callers may also call |SSL_do_handshake| again
+// to complete the handshake sooner.
+//
+// If the server accepts early data, the handshake will succeed. |SSL_read| and
+// |SSL_write| will then act as in a 1-RTT handshake. The peer certificates and
+// ALPN protocol will be as predicted and need not be re-queried.
+//
+// If the server rejects early data, |SSL_do_handshake| (and thus |SSL_read| and
+// |SSL_write|) will then fail with |SSL_get_error| returning
+// |SSL_ERROR_EARLY_DATA_REJECTED|. The caller should treat this as a connection
+// error and most likely perform a high-level retry. Note the server may still
+// have processed the early data due to attacker replays.
+//
+// To then continue the handshake on the original connection, use
+// |SSL_reset_early_data_reject|. The connection will then behave as one which
+// had not yet completed the handshake. This allows a faster retry than making a
+// fresh connection. |SSL_do_handshake| will complete the full handshake,
+// possibly resulting in different peer certificates, ALPN protocol, and other
+// properties. The caller must disregard any values from before the reset and
+// query again.
+//
+// Finally, to implement the fallback described in RFC 8446 appendix D.3, retry
+// on a fresh connection without 0-RTT if the handshake fails with
+// |SSL_R_WRONG_VERSION_ON_EARLY_DATA|.
+
+// SSL_CTX_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_early_data_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ssl|. See |SSL_CTX_set_early_data_enabled| for more
+// information.
+OPENSSL_EXPORT void SSL_set_early_data_enabled(SSL *ssl, int enabled);
+
+// SSL_in_early_data returns one if |ssl| has a pending handshake that has
+// progressed enough to send or receive early data. Clients may call |SSL_write|
+// to send early data, but |SSL_read| will complete the handshake before
+// accepting application data. Servers may call |SSL_read| to read early data
+// and |SSL_write| to send half-RTT data.
+OPENSSL_EXPORT int SSL_in_early_data(const SSL *ssl);
+
+// SSL_SESSION_early_data_capable returns whether early data would have been
+// attempted with |session| if enabled.
+OPENSSL_EXPORT int SSL_SESSION_early_data_capable(const SSL_SESSION *session);
+
+// SSL_early_data_accepted returns whether early data was accepted on the
+// handshake performed by |ssl|.
+OPENSSL_EXPORT int SSL_early_data_accepted(const SSL *ssl);
+
+// SSL_reset_early_data_reject resets |ssl| after an early data reject. All
+// 0-RTT state is discarded, including any pending |SSL_write| calls. The caller
+// should treat |ssl| as a logically fresh connection, usually by driving the
+// handshake to completion using |SSL_do_handshake|.
+//
+// It is an error to call this function on an |SSL| object that is not signaling
+// |SSL_ERROR_EARLY_DATA_REJECTED|.
+OPENSSL_EXPORT void SSL_reset_early_data_reject(SSL *ssl);
+
+// SSL_get_ticket_age_skew returns the difference, in seconds, between the
+// client-sent ticket age and the server-computed value in TLS 1.3 server
+// connections which resumed a session.
+OPENSSL_EXPORT int32_t SSL_get_ticket_age_skew(const SSL *ssl);
+
+// An ssl_early_data_reason_t describes why 0-RTT was accepted or rejected.
+// These values are persisted to logs. Entries should not be renumbered and
+// numeric values should never be reused.
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT {
+  // The handshake has not progressed far enough for the 0-RTT status to be
+  // known.
+  ssl_early_data_unknown = 0,
+  // 0-RTT is disabled for this connection.
+  ssl_early_data_disabled = 1,
+  // 0-RTT was accepted.
+  ssl_early_data_accepted = 2,
+  // The negotiated protocol version does not support 0-RTT.
+  ssl_early_data_protocol_version = 3,
+  // The peer declined to offer or accept 0-RTT for an unknown reason.
+  ssl_early_data_peer_declined = 4,
+  // The client did not offer a session.
+  ssl_early_data_no_session_offered = 5,
+  // The server declined to resume the session.
+  ssl_early_data_session_not_resumed = 6,
+  // The session does not support 0-RTT.
+  ssl_early_data_unsupported_for_session = 7,
+  // The server sent a HelloRetryRequest.
+  ssl_early_data_hello_retry_request = 8,
+  // The negotiated ALPN protocol did not match the session.
+  ssl_early_data_alpn_mismatch = 9,
+  // The connection negotiated Channel ID, which is incompatible with 0-RTT.
+  ssl_early_data_channel_id = 10,
+  // The connection negotiated token binding, which is incompatible with 0-RTT.
+  ssl_early_data_token_binding = 11,
+  // The client and server ticket age were too far apart.
+  ssl_early_data_ticket_age_skew = 12,
+  // The value of the largest entry.
+  ssl_early_data_reason_max_value = ssl_early_data_ticket_age_skew,
+};
+
+// SSL_get_early_data_reason returns details why 0-RTT was accepted or rejected
+// on |ssl|. This is primarily useful on the server.
+OPENSSL_EXPORT enum ssl_early_data_reason_t SSL_get_early_data_reason(
+    const SSL *ssl);
+
+
+// Alerts.
+//
+// TLS uses alerts to signal error conditions. Alerts have a type (warning or
+// fatal) and description. OpenSSL internally handles fatal alerts with
+// dedicated error codes (see |SSL_AD_REASON_OFFSET|). Except for close_notify,
+// warning alerts are silently ignored and may only be surfaced with
+// |SSL_CTX_set_info_callback|.
+
+// SSL_AD_REASON_OFFSET is the offset between error reasons and |SSL_AD_*|
+// values. Any error code under |ERR_LIB_SSL| with an error reason above this
+// value corresponds to an alert description. Consumers may add or subtract
+// |SSL_AD_REASON_OFFSET| to convert between them.
+//
+// make_errors.go reserves error codes above 1000 for manually-assigned errors.
+// This value must be kept in sync with reservedReasonCode in make_errors.h
+#define SSL_AD_REASON_OFFSET 1000
+
+// SSL_AD_* are alert descriptions.
+#define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
+#define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
+#define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
+#define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
+#define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
+#define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
+#define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
+#define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE  // Legacy SSL 3.0 value
+#define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
+#define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
+#define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
+#define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
+#define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
+#define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
+#define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
+#define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
+#define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
+#define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
+#define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
+#define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
+#define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
+#define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
+#define SSL_AD_INAPPROPRIATE_FALLBACK SSL3_AD_INAPPROPRIATE_FALLBACK
+#define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
+#define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
+#define SSL_AD_MISSING_EXTENSION TLS1_AD_MISSING_EXTENSION
+#define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
+#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
+#define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
+#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE \
+  TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
+#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
+#define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
+#define SSL_AD_CERTIFICATE_REQUIRED TLS1_AD_CERTIFICATE_REQUIRED
+
+// SSL_alert_type_string_long returns a string description of |value| as an
+// alert type (warning or fatal).
+OPENSSL_EXPORT const char *SSL_alert_type_string_long(int value);
+
+// SSL_alert_desc_string_long returns a string description of |value| as an
+// alert description or "unknown" if unknown.
+OPENSSL_EXPORT const char *SSL_alert_desc_string_long(int value);
+
+// SSL_send_fatal_alert sends a fatal alert over |ssl| of the specified type,
+// which should be one of the |SSL_AD_*| constants. It returns one on success
+// and <= 0 on error. The caller should pass the return value into
+// |SSL_get_error| to determine how to proceed. Once this function has been
+// called, future calls to |SSL_write| will fail.
+//
+// If retrying a failed operation due to |SSL_ERROR_WANT_WRITE|, subsequent
+// calls must use the same |alert| parameter.
+OPENSSL_EXPORT int SSL_send_fatal_alert(SSL *ssl, uint8_t alert);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int SSL_set_ex_data(SSL *ssl, int idx, void *data);
+OPENSSL_EXPORT void *SSL_get_ex_data(const SSL *ssl, int idx);
+OPENSSL_EXPORT int SSL_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx,
+                                           void *data);
+OPENSSL_EXPORT void *SSL_SESSION_get_ex_data(const SSL_SESSION *session,
+                                             int idx);
+OPENSSL_EXPORT int SSL_SESSION_get_ex_new_index(long argl, void *argp,
+                                                CRYPTO_EX_unused *unused,
+                                                CRYPTO_EX_dup *dup_unused,
+                                                CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *data);
+OPENSSL_EXPORT void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx);
+OPENSSL_EXPORT int SSL_CTX_get_ex_new_index(long argl, void *argp,
+                                            CRYPTO_EX_unused *unused,
+                                            CRYPTO_EX_dup *dup_unused,
+                                            CRYPTO_EX_free *free_func);
+
+
+// Low-level record-layer state.
+
+// SSL_get_ivs sets |*out_iv_len| to the length of the IVs for the ciphers
+// underlying |ssl| and sets |*out_read_iv| and |*out_write_iv| to point to the
+// current IVs for the read and write directions. This is only meaningful for
+// connections with implicit IVs (i.e. CBC mode with TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
+                               const uint8_t **out_write_iv,
+                               size_t *out_iv_len);
+
+// SSL_get_key_block_len returns the length of |ssl|'s key block.
+OPENSSL_EXPORT size_t SSL_get_key_block_len(const SSL *ssl);
+
+// SSL_generate_key_block generates |out_len| bytes of key material for |ssl|'s
+// current connection state.
+OPENSSL_EXPORT int SSL_generate_key_block(const SSL *ssl, uint8_t *out,
+                                          size_t out_len);
+
+// SSL_get_read_sequence returns, in TLS, the expected sequence number of the
+// next incoming record in the current epoch. In DTLS, it returns the maximum
+// sequence number received in the current epoch and includes the epoch number
+// in the two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_read_sequence(const SSL *ssl);
+
+// SSL_get_write_sequence returns the sequence number of the next outgoing
+// record in the current epoch. In DTLS, it includes the epoch number in the
+// two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_write_sequence(const SSL *ssl);
+
+
+// Obscure functions.
+
+// SSL_CTX_set_msg_callback installs |cb| as the message callback for |ctx|.
+// This callback will be called when sending or receiving low-level record
+// headers, complete handshake messages, ChangeCipherSpec, and alerts.
+// |write_p| is one for outgoing messages and zero for incoming messages.
+//
+// For each record header, |cb| is called with |version| = 0 and |content_type|
+// = |SSL3_RT_HEADER|. The |len| bytes from |buf| contain the header. Note that
+// this does not include the record body. If the record is sealed, the length
+// in the header is the length of the ciphertext.
+//
+// For each handshake message, ChangeCipherSpec, and alert, |version| is the
+// protocol version and |content_type| is the corresponding record type. The
+// |len| bytes from |buf| contain the handshake message, one-byte
+// ChangeCipherSpec body, and two-byte alert, respectively.
+//
+// For a V2ClientHello, |version| is |SSL2_VERSION|, |content_type| is zero, and
+// the |len| bytes from |buf| contain the V2ClientHello structure.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback(
+    SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type,
+                             const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_CTX_set_msg_callback_arg sets the |arg| parameter of the message
+// callback.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_set_msg_callback installs |cb| as the message callback of |ssl|. See
+// |SSL_CTX_set_msg_callback| for when this callback is called.
+OPENSSL_EXPORT void SSL_set_msg_callback(
+    SSL *ssl, void (*cb)(int write_p, int version, int content_type,
+                         const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_set_msg_callback_arg sets the |arg| parameter of the message callback.
+OPENSSL_EXPORT void SSL_set_msg_callback_arg(SSL *ssl, void *arg);
+
+// SSL_CTX_set_keylog_callback configures a callback to log key material. This
+// is intended for debugging use with tools like Wireshark. The |cb| function
+// should log |line| followed by a newline, synchronizing with any concurrent
+// access to the log.
+//
+// The format is described in
+// https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/Key_Log_Format.
+OPENSSL_EXPORT void SSL_CTX_set_keylog_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, const char *line));
+
+// SSL_CTX_get_keylog_callback returns the callback configured by
+// |SSL_CTX_set_keylog_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(
+    const SSL *ssl, const char *line);
+
+// SSL_CTX_set_current_time_cb configures a callback to retrieve the current
+// time, which should be set in |*out_clock|. This can be used for testing
+// purposes; for example, a callback can be configured that returns a time
+// set explicitly by the test. The |ssl| pointer passed to |cb| is always null.
+OPENSSL_EXPORT void SSL_CTX_set_current_time_cb(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, struct timeval *out_clock));
+
+// SSL_set_shed_handshake_config allows some of the configuration of |ssl| to be
+// freed after its handshake completes.  Once configuration has been shed, APIs
+// that query it may fail.  "Configuration" in this context means anything that
+// was set by the caller, as distinct from information derived from the
+// handshake.  For example, |SSL_get_ciphers| queries how the |SSL| was
+// configured by the caller, and fails after configuration has been shed,
+// whereas |SSL_get_cipher| queries the result of the handshake, and is
+// unaffected by configuration shedding.
+//
+// If configuration shedding is enabled, it is an error to call |SSL_clear|.
+//
+// Note that configuration shedding as a client additionally depends on
+// renegotiation being disabled (see |SSL_set_renegotiate_mode|). If
+// renegotiation is possible, the configuration will be retained. If
+// configuration shedding is enabled and renegotiation later disabled after the
+// handshake, |SSL_set_renegotiate_mode| will shed configuration then. This may
+// be useful for clients which support renegotiation with some ALPN protocols,
+// such as HTTP/1.1, and not others, such as HTTP/2.
+OPENSSL_EXPORT void SSL_set_shed_handshake_config(SSL *ssl, int enable);
+
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT {
+  ssl_renegotiate_never = 0,
+  ssl_renegotiate_once,
+  ssl_renegotiate_freely,
+  ssl_renegotiate_ignore,
+  ssl_renegotiate_explicit,
+};
+
+// SSL_set_renegotiate_mode configures how |ssl|, a client, reacts to
+// renegotiation attempts by a server. If |ssl| is a server, peer-initiated
+// renegotiations are *always* rejected and this function does nothing.
+//
+// The renegotiation mode defaults to |ssl_renegotiate_never|, but may be set
+// at any point in a connection's lifetime. Set it to |ssl_renegotiate_once| to
+// allow one renegotiation, |ssl_renegotiate_freely| to allow all
+// renegotiations or |ssl_renegotiate_ignore| to ignore HelloRequest messages.
+// Note that ignoring HelloRequest messages may cause the connection to stall
+// if the server waits for the renegotiation to complete.
+//
+// If set to |ssl_renegotiate_explicit|, |SSL_read| and |SSL_peek| calls which
+// encounter a HelloRequest will pause with |SSL_ERROR_WANT_RENEGOTIATE|.
+// |SSL_write| will continue to work while paused. The caller may call
+// |SSL_renegotiate| to begin the renegotiation at a later point. This mode may
+// be used if callers wish to eagerly call |SSL_peek| without triggering a
+// renegotiation.
+//
+// If configuration shedding is enabled (see |SSL_set_shed_handshake_config|),
+// configuration is released if, at any point after the handshake, renegotiation
+// is disabled. It is not possible to switch from disabling renegotiation to
+// enabling it on a given connection. Callers that condition renegotiation on,
+// e.g., ALPN must enable renegotiation before the handshake and conditionally
+// disable it afterwards.
+//
+// There is no support in BoringSSL for initiating renegotiations as a client
+// or server.
+OPENSSL_EXPORT void SSL_set_renegotiate_mode(SSL *ssl,
+                                             enum ssl_renegotiate_mode_t mode);
+
+// SSL_renegotiate starts a deferred renegotiation on |ssl| if it was configured
+// with |ssl_renegotiate_explicit| and has a pending HelloRequest. It returns
+// one on success and zero on error.
+//
+// This function does not do perform any I/O. On success, a subsequent
+// |SSL_do_handshake| call will run the handshake. |SSL_write| and
+// |SSL_read| will also complete the handshake before sending or receiving
+// application data.
+OPENSSL_EXPORT int SSL_renegotiate(SSL *ssl);
+
+// SSL_renegotiate_pending returns one if |ssl| is in the middle of a
+// renegotiation.
+OPENSSL_EXPORT int SSL_renegotiate_pending(SSL *ssl);
+
+// SSL_total_renegotiations returns the total number of renegotiation handshakes
+// performed by |ssl|. This includes the pending renegotiation, if any.
+OPENSSL_EXPORT int SSL_total_renegotiations(const SSL *ssl);
+
+// SSL_MAX_CERT_LIST_DEFAULT is the default maximum length, in bytes, of a peer
+// certificate chain.
+#define SSL_MAX_CERT_LIST_DEFAULT (1024 * 100)
+
+// SSL_CTX_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ctx|.
+OPENSSL_EXPORT size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx);
+
+// SSL_CTX_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_CTX_set_max_cert_list(SSL_CTX *ctx,
+                                              size_t max_cert_list);
+
+// SSL_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ssl|.
+OPENSSL_EXPORT size_t SSL_get_max_cert_list(const SSL *ssl);
+
+// SSL_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list);
+
+// SSL_CTX_set_max_send_fragment sets the maximum length, in bytes, of records
+// sent by |ctx|. Beyond this length, handshake messages and application data
+// will be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx,
+                                                 size_t max_send_fragment);
+
+// SSL_set_max_send_fragment sets the maximum length, in bytes, of records sent
+// by |ssl|. Beyond this length, handshake messages and application data will
+// be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_set_max_send_fragment(SSL *ssl,
+                                             size_t max_send_fragment);
+
+// ssl_early_callback_ctx (aka |SSL_CLIENT_HELLO|) is passed to certain
+// callbacks that are called very early on during the server handshake. At this
+// point, much of the SSL* hasn't been filled out and only the ClientHello can
+// be depended on.
+typedef struct ssl_early_callback_ctx {
+  SSL *ssl;
+  const uint8_t *client_hello;
+  size_t client_hello_len;
+  uint16_t version;
+  const uint8_t *random;
+  size_t random_len;
+  const uint8_t *session_id;
+  size_t session_id_len;
+  const uint8_t *cipher_suites;
+  size_t cipher_suites_len;
+  const uint8_t *compression_methods;
+  size_t compression_methods_len;
+  const uint8_t *extensions;
+  size_t extensions_len;
+} SSL_CLIENT_HELLO;
+
+// ssl_select_cert_result_t enumerates the possible results from selecting a
+// certificate with |select_certificate_cb|.
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT {
+  // ssl_select_cert_success indicates that the certificate selection was
+  // successful.
+  ssl_select_cert_success = 1,
+  // ssl_select_cert_retry indicates that the operation could not be
+  // immediately completed and must be reattempted at a later point.
+  ssl_select_cert_retry = 0,
+  // ssl_select_cert_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_select_cert_error = -1,
+};
+
+// SSL_early_callback_ctx_extension_get searches the extensions in
+// |client_hello| for an extension of the given type. If not found, it returns
+// zero. Otherwise it sets |out_data| to point to the extension contents (not
+// including the type and length bytes), sets |out_len| to the length of the
+// extension contents and returns one.
+OPENSSL_EXPORT int SSL_early_callback_ctx_extension_get(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t extension_type,
+    const uint8_t **out_data, size_t *out_len);
+
+// SSL_CTX_set_select_certificate_cb sets a callback that is called before most
+// ClientHello processing and before the decision whether to resume a session
+// is made. The callback may inspect the ClientHello and configure the
+// connection. See |ssl_select_cert_result_t| for details of the return values.
+//
+// In the case that a retry is indicated, |SSL_get_error| will return
+// |SSL_ERROR_PENDING_CERTIFICATE| and the caller should arrange for the
+// high-level operation on |ssl| to be retried at a later time, which will
+// result in another call to |cb|.
+//
+// |SSL_get_servername| may be used during this callback.
+//
+// Note: The |SSL_CLIENT_HELLO| is only valid for the duration of the callback
+// and is not valid while the handshake is paused.
+OPENSSL_EXPORT void SSL_CTX_set_select_certificate_cb(
+    SSL_CTX *ctx,
+    enum ssl_select_cert_result_t (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_dos_protection_cb sets a callback that is called once the
+// resumption decision for a ClientHello has been made. It can return one to
+// allow the handshake to continue or zero to cause the handshake to abort.
+OPENSSL_EXPORT void SSL_CTX_set_dos_protection_cb(
+    SSL_CTX *ctx, int (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_reverify_on_resume configures whether the certificate
+// verification callback will be used to reverify stored certificates
+// when resuming a session. This only works with |SSL_CTX_set_custom_verify|.
+// For now, this is incompatible with |SSL_VERIFY_NONE| mode, and is only
+// respected on clients.
+OPENSSL_EXPORT void SSL_CTX_set_reverify_on_resume(SSL_CTX *ctx, int enabled);
+
+// SSL_set_enforce_rsa_key_usage configures whether the keyUsage extension of
+// RSA leaf certificates will be checked for consistency with the TLS
+// usage. This parameter may be set late; it will not be read until after the
+// certificate verification callback.
+OPENSSL_EXPORT void SSL_set_enforce_rsa_key_usage(SSL *ssl, int enabled);
+
+// SSL_ST_* are possible values for |SSL_state|, the bitmasks that make them up,
+// and some historical values for compatibility. Only |SSL_ST_INIT| and
+// |SSL_ST_OK| are ever returned.
+#define SSL_ST_CONNECT 0x1000
+#define SSL_ST_ACCEPT 0x2000
+#define SSL_ST_MASK 0x0FFF
+#define SSL_ST_INIT (SSL_ST_CONNECT | SSL_ST_ACCEPT)
+#define SSL_ST_OK 0x03
+#define SSL_ST_RENEGOTIATE (0x04 | SSL_ST_INIT)
+#define SSL_ST_BEFORE (0x05 | SSL_ST_INIT)
+
+// TLS_ST_* are aliases for |SSL_ST_*| for OpenSSL 1.1.0 compatibility.
+#define TLS_ST_OK SSL_ST_OK
+#define TLS_ST_BEFORE SSL_ST_BEFORE
+
+// SSL_CB_* are possible values for the |type| parameter in the info
+// callback and the bitmasks that make them up.
+#define SSL_CB_LOOP 0x01
+#define SSL_CB_EXIT 0x02
+#define SSL_CB_READ 0x04
+#define SSL_CB_WRITE 0x08
+#define SSL_CB_ALERT 0x4000
+#define SSL_CB_READ_ALERT (SSL_CB_ALERT | SSL_CB_READ)
+#define SSL_CB_WRITE_ALERT (SSL_CB_ALERT | SSL_CB_WRITE)
+#define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT | SSL_CB_LOOP)
+#define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT | SSL_CB_EXIT)
+#define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT | SSL_CB_LOOP)
+#define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT | SSL_CB_EXIT)
+#define SSL_CB_HANDSHAKE_START 0x10
+#define SSL_CB_HANDSHAKE_DONE 0x20
+
+// SSL_CTX_set_info_callback configures a callback to be run when various
+// events occur during a connection's lifetime. The |type| argument determines
+// the type of event and the meaning of the |value| argument. Callbacks must
+// ignore unexpected |type| values.
+//
+// |SSL_CB_READ_ALERT| is signaled for each alert received, warning or fatal.
+// The |value| argument is a 16-bit value where the alert level (either
+// |SSL3_AL_WARNING| or |SSL3_AL_FATAL|) is in the most-significant eight bits
+// and the alert type (one of |SSL_AD_*|) is in the least-significant eight.
+//
+// |SSL_CB_WRITE_ALERT| is signaled for each alert sent. The |value| argument
+// is constructed as with |SSL_CB_READ_ALERT|.
+//
+// |SSL_CB_HANDSHAKE_START| is signaled when a handshake begins. The |value|
+// argument is always one.
+//
+// |SSL_CB_HANDSHAKE_DONE| is signaled when a handshake completes successfully.
+// The |value| argument is always one. If a handshake False Starts, this event
+// may be used to determine when the Finished message is received.
+//
+// The following event types expose implementation details of the handshake
+// state machine. Consuming them is deprecated.
+//
+// |SSL_CB_ACCEPT_LOOP| (respectively, |SSL_CB_CONNECT_LOOP|) is signaled when
+// a server (respectively, client) handshake progresses. The |value| argument
+// is always one.
+//
+// |SSL_CB_ACCEPT_EXIT| (respectively, |SSL_CB_CONNECT_EXIT|) is signaled when
+// a server (respectively, client) handshake completes, fails, or is paused.
+// The |value| argument is one if the handshake succeeded and <= 0
+// otherwise.
+OPENSSL_EXPORT void SSL_CTX_set_info_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_CTX_get_info_callback returns the callback set by
+// |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,
+                                                               int type,
+                                                               int value);
+
+// SSL_set_info_callback configures a callback to be run at various events
+// during a connection's lifetime. See |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void SSL_set_info_callback(
+    SSL *ssl, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_get_info_callback returns the callback set by |SSL_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,
+                                                             int type,
+                                                             int value);
+
+// SSL_state_string_long returns the current state of the handshake state
+// machine as a string. This may be useful for debugging and logging.
+OPENSSL_EXPORT const char *SSL_state_string_long(const SSL *ssl);
+
+#define SSL_SENT_SHUTDOWN 1
+#define SSL_RECEIVED_SHUTDOWN 2
+
+// SSL_get_shutdown returns a bitmask with a subset of |SSL_SENT_SHUTDOWN| and
+// |SSL_RECEIVED_SHUTDOWN| to query whether close_notify was sent or received,
+// respectively.
+OPENSSL_EXPORT int SSL_get_shutdown(const SSL *ssl);
+
+// SSL_get_peer_signature_algorithm returns the signature algorithm used by the
+// peer. If not applicable, it returns zero.
+OPENSSL_EXPORT uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl);
+
+// SSL_get_client_random writes up to |max_out| bytes of the most recent
+// handshake's client_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the client_random.
+OPENSSL_EXPORT size_t SSL_get_client_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_server_random writes up to |max_out| bytes of the most recent
+// handshake's server_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the server_random.
+OPENSSL_EXPORT size_t SSL_get_server_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_pending_cipher returns the cipher suite for the current handshake or
+// NULL if one has not been negotiated yet or there is no pending handshake.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl);
+
+// SSL_set_retain_only_sha256_of_client_certs, on a server, sets whether only
+// the SHA-256 hash of peer's certificate should be saved in memory and in the
+// session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_set_retain_only_sha256_of_client_certs(SSL *ssl,
+                                                               int enable);
+
+// SSL_CTX_set_retain_only_sha256_of_client_certs, on a server, sets whether
+// only the SHA-256 hash of peer's certificate should be saved in memory and in
+// the session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx,
+                                                                   int enable);
+
+// SSL_CTX_set_grease_enabled configures whether sockets on |ctx| should enable
+// GREASE. See draft-davidben-tls-grease-01.
+OPENSSL_EXPORT void SSL_CTX_set_grease_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_max_seal_overhead returns the maximum overhead, in bytes, of sealing a
+// record with |ssl|.
+OPENSSL_EXPORT size_t SSL_max_seal_overhead(const SSL *ssl);
+
+// SSL_CTX_set_false_start_allowed_without_alpn configures whether connections
+// on |ctx| may use False Start (if |SSL_MODE_ENABLE_FALSE_START| is enabled)
+// without negotiating ALPN.
+OPENSSL_EXPORT void SSL_CTX_set_false_start_allowed_without_alpn(SSL_CTX *ctx,
+                                                                 int allowed);
+
+// SSL_CTX_set_ignore_tls13_downgrade configures whether connections on |ctx|
+// ignore the downgrade signal in the server's random value.
+OPENSSL_EXPORT void SSL_CTX_set_ignore_tls13_downgrade(SSL_CTX *ctx,
+                                                       int ignore);
+
+// SSL_set_ignore_tls13_downgrade configures whether |ssl| ignores the downgrade
+// signal in the server's random value.
+OPENSSL_EXPORT void SSL_set_ignore_tls13_downgrade(SSL *ssl, int ignore);
+
+// SSL_is_tls13_downgrade returns one if the TLS 1.3 anti-downgrade
+// mechanism would have aborted |ssl|'s handshake and zero otherwise.
+OPENSSL_EXPORT int SSL_is_tls13_downgrade(const SSL *ssl);
+
+// SSL_used_hello_retry_request returns one if the TLS 1.3 HelloRetryRequest
+// message has been either sent by the server or received by the client. It
+// returns zero otherwise.
+OPENSSL_EXPORT int SSL_used_hello_retry_request(const SSL *ssl);
+
+// SSL_set_jdk11_workaround configures whether to workaround various bugs in
+// JDK 11's TLS 1.3 implementation by disabling TLS 1.3 for such clients.
+//
+// https://bugs.openjdk.java.net/browse/JDK-8211806
+// https://bugs.openjdk.java.net/browse/JDK-8212885
+// https://bugs.openjdk.java.net/browse/JDK-8213202
+OPENSSL_EXPORT void SSL_set_jdk11_workaround(SSL *ssl, int enable);
+
+
+// Deprecated functions.
+
+// SSL_library_init calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int SSL_library_init(void);
+
+// SSL_CIPHER_description writes a description of |cipher| into |buf| and
+// returns |buf|. If |buf| is NULL, it returns a newly allocated string, to be
+// freed with |OPENSSL_free|, or NULL on error.
+//
+// The description includes a trailing newline and has the form:
+// AES128-SHA              Kx=RSA      Au=RSA  Enc=AES(128)  Mac=SHA1
+//
+// Consider |SSL_CIPHER_standard_name| or |SSL_CIPHER_get_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_description(const SSL_CIPHER *cipher,
+                                                  char *buf, int len);
+
+// SSL_CIPHER_get_version returns the string "TLSv1/SSLv3".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_rfc_name returns a newly-allocated string containing the
+// result of |SSL_CIPHER_standard_name| or NULL on error. The caller is
+// responsible for calling |OPENSSL_free| on the result.
+//
+// Use |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT char *SSL_CIPHER_get_rfc_name(const SSL_CIPHER *cipher);
+
+typedef void COMP_METHOD;
+typedef struct ssl_comp_st SSL_COMP;
+
+// SSL_COMP_get_compression_methods returns NULL.
+OPENSSL_EXPORT STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
+
+// SSL_COMP_add_compression_method returns one.
+OPENSSL_EXPORT int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
+
+// SSL_COMP_get_name returns NULL.
+OPENSSL_EXPORT const char *SSL_COMP_get_name(const COMP_METHOD *comp);
+
+// SSL_COMP_get0_name returns the |name| member of |comp|.
+OPENSSL_EXPORT const char *SSL_COMP_get0_name(const SSL_COMP *comp);
+
+// SSL_COMP_get_id returns the |id| member of |comp|.
+OPENSSL_EXPORT int SSL_COMP_get_id(const SSL_COMP *comp);
+
+// SSL_COMP_free_compression_methods does nothing.
+OPENSSL_EXPORT void SSL_COMP_free_compression_methods(void);
+
+// SSLv23_method calls |TLS_method|.
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_method(void);
+
+// These version-specific methods behave exactly like |TLS_method| and
+// |DTLS_method| except they also call |SSL_CTX_set_min_proto_version| and
+// |SSL_CTX_set_max_proto_version| to lock connections to that protocol
+// version.
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_method(void);
+
+// These client- and server-specific methods call their corresponding generic
+// methods.
+OPENSSL_EXPORT const SSL_METHOD *TLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_client_method(void);
+
+// SSL_clear resets |ssl| to allow another connection and returns one on success
+// or zero on failure. It returns most configuration state but releases memory
+// associated with the current connection.
+//
+// Free |ssl| and create a new one instead.
+OPENSSL_EXPORT int SSL_clear(SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_rsa_callback(
+    SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_rsa_callback(SSL *ssl,
+                                             RSA *(*cb)(SSL *ssl, int is_export,
+                                                        int keylength));
+
+// SSL_CTX_sess_connect returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cb_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_misses returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_misses(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_timeouts returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_timeouts(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cache_full returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cache_full(const SSL_CTX *ctx);
+
+// SSL_cutthrough_complete calls |SSL_in_false_start|.
+OPENSSL_EXPORT int SSL_cutthrough_complete(const SSL *ssl);
+
+// SSL_num_renegotiations calls |SSL_total_renegotiations|.
+OPENSSL_EXPORT int SSL_num_renegotiations(const SSL *ssl);
+
+// SSL_CTX_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx);
+
+// SSL_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_need_tmp_RSA(const SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa);
+
+// SSL_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa);
+
+// SSL_CTX_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_CTX_get_read_ahead(const SSL_CTX *ctx);
+
+// SSL_CTX_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes);
+
+// SSL_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_get_read_ahead(const SSL *ssl);
+
+// SSL_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_set_read_ahead(SSL *ssl, int yes);
+
+// SSL_set_state does nothing.
+OPENSSL_EXPORT void SSL_set_state(SSL *ssl, int state);
+
+// SSL_get_shared_ciphers writes an empty string to |buf| and returns a
+// pointer to |buf|, or NULL if |len| is less than or equal to zero.
+OPENSSL_EXPORT char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len);
+
+// SSL_get_shared_sigalgs returns zero.
+OPENSSL_EXPORT int SSL_get_shared_sigalgs(SSL *ssl, int idx, int *psign,
+                                          int *phash, int *psignandhash,
+                                          uint8_t *rsig, uint8_t *rhash);
+
+// SSL_MODE_HANDSHAKE_CUTTHROUGH is the same as SSL_MODE_ENABLE_FALSE_START.
+#define SSL_MODE_HANDSHAKE_CUTTHROUGH SSL_MODE_ENABLE_FALSE_START
+
+// i2d_SSL_SESSION serializes |in| to the bytes pointed to by |*pp|. On success,
+// it returns the number of bytes written and advances |*pp| by that many bytes.
+// On failure, it returns -1. If |pp| is NULL, no bytes are written and only the
+// length is returned.
+//
+// Use |SSL_SESSION_to_bytes| instead.
+OPENSSL_EXPORT int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp);
+
+// d2i_SSL_SESSION parses a serialized session from the |length| bytes pointed
+// to by |*pp|. It returns the new |SSL_SESSION| and advances |*pp| by the
+// number of bytes consumed on success and NULL on failure. The caller takes
+// ownership of the new session and must call |SSL_SESSION_free| when done.
+//
+// If |a| is non-NULL, |*a| is released and set the new |SSL_SESSION|.
+//
+// Use |SSL_SESSION_from_bytes| instead.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp,
+                                            long length);
+
+// i2d_SSL_SESSION_bio serializes |session| and writes the result to |bio|. It
+// returns the number of bytes written on success and <= 0 on error.
+OPENSSL_EXPORT int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session);
+
+// d2i_SSL_SESSION_bio reads a serialized |SSL_SESSION| from |bio| and returns a
+// newly-allocated |SSL_SESSION| or NULL on error. If |out| is not NULL, it also
+// frees |*out| and sets |*out| to the new |SSL_SESSION|.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out);
+
+// ERR_load_SSL_strings does nothing.
+OPENSSL_EXPORT void ERR_load_SSL_strings(void);
+
+// SSL_load_error_strings does nothing.
+OPENSSL_EXPORT void SSL_load_error_strings(void);
+
+// SSL_CTX_set_tlsext_use_srtp calls |SSL_CTX_set_srtp_profiles|. It returns
+// zero on success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_CTX_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx,
+                                               const char *profiles);
+
+// SSL_set_tlsext_use_srtp calls |SSL_set_srtp_profiles|. It returns zero on
+// success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles);
+
+// SSL_get_current_compression returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_compression(SSL *ssl);
+
+// SSL_get_current_expansion returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_expansion(SSL *ssl);
+
+// SSL_get_server_tmp_key returns zero.
+OPENSSL_EXPORT int SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key);
+
+// SSL_CTX_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh);
+
+// SSL_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_set_tmp_dh(SSL *ssl, const DH *dh);
+
+// SSL_CTX_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_dh_callback(
+    SSL_CTX *ctx, DH *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_dh_callback(SSL *ssl,
+                                            DH *(*cb)(SSL *ssl, int is_export,
+                                                      int keylength));
+
+// SSL_CTX_set1_sigalgs takes |num_values| ints and interprets them as pairs
+// where the first is the nid of a hash function and the second is an
+// |EVP_PKEY_*| value. It configures the signature algorithm preferences for
+// |ctx| based on them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs(SSL_CTX *ctx, const int *values,
+                                        size_t num_values);
+
+// SSL_set1_sigalgs takes |num_values| ints and interprets them as pairs where
+// the first is the nid of a hash function and the second is an |EVP_PKEY_*|
+// value. It configures the signature algorithm preferences for |ssl| based on
+// them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs(SSL *ssl, const int *values,
+                                    size_t num_values);
+
+// SSL_CTX_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ctx|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ssl|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs_list(SSL *ssl, const char *str);
+
+#define SSL_set_app_data(s, arg) (SSL_set_ex_data(s, 0, (char *)(arg)))
+#define SSL_get_app_data(s) (SSL_get_ex_data(s, 0))
+#define SSL_SESSION_set_app_data(s, a) \
+  (SSL_SESSION_set_ex_data(s, 0, (char *)(a)))
+#define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s, 0))
+#define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx, 0))
+#define SSL_CTX_set_app_data(ctx, arg) \
+  (SSL_CTX_set_ex_data(ctx, 0, (char *)(arg)))
+
+#define OpenSSL_add_ssl_algorithms() SSL_library_init()
+#define SSLeay_add_ssl_algorithms() SSL_library_init()
+
+#define SSL_get_cipher(ssl) SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_bits(ssl, out_alg_bits) \
+    SSL_CIPHER_get_bits(SSL_get_current_cipher(ssl), out_alg_bits)
+#define SSL_get_cipher_version(ssl) \
+    SSL_CIPHER_get_version(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_name(ssl) \
+    SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_time(session) SSL_SESSION_get_time(session)
+#define SSL_set_time(session, time) SSL_SESSION_set_time((session), (time))
+#define SSL_get_timeout(session) SSL_SESSION_get_timeout(session)
+#define SSL_set_timeout(session, timeout) \
+    SSL_SESSION_set_timeout((session), (timeout))
+
+struct ssl_comp_st {
+  int id;
+  const char *name;
+  char *method;
+};
+
+DEFINE_STACK_OF(SSL_COMP)
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define SSL_MODE_AUTO_RETRY 0
+#define SSL_MODE_RELEASE_BUFFERS 0
+#define SSL_MODE_SEND_CLIENTHELLO_TIME 0
+#define SSL_MODE_SEND_SERVERHELLO_TIME 0
+#define SSL_OP_ALL 0
+#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0
+#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 0
+#define SSL_OP_EPHEMERAL_RSA 0
+#define SSL_OP_LEGACY_SERVER_CONNECT 0
+#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0
+#define SSL_OP_MICROSOFT_SESS_ID_BUG 0
+#define SSL_OP_MSIE_SSLV2_RSA_PADDING 0
+#define SSL_OP_NETSCAPE_CA_DN_BUG 0
+#define SSL_OP_NETSCAPE_CHALLENGE_BUG 0
+#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NO_COMPRESSION 0
+#define SSL_OP_NO_RENEGOTIATION 0  // ssl_renegotiate_never is the default
+#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0
+#define SSL_OP_NO_SSLv2 0
+#define SSL_OP_NO_SSLv3 0
+#define SSL_OP_PKCS1_CHECK_1 0
+#define SSL_OP_PKCS1_CHECK_2 0
+#define SSL_OP_SINGLE_DH_USE 0
+#define SSL_OP_SINGLE_ECDH_USE 0
+#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0
+#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0
+#define SSL_OP_TLS_BLOCK_PADDING_BUG 0
+#define SSL_OP_TLS_D5_BUG 0
+#define SSL_OP_TLS_ROLLBACK_BUG 0
+#define SSL_VERIFY_CLIENT_ONCE 0
+
+// SSL_cache_hit calls |SSL_session_reused|.
+OPENSSL_EXPORT int SSL_cache_hit(SSL *ssl);
+
+// SSL_get_default_timeout returns |SSL_DEFAULT_SESSION_TIMEOUT|.
+OPENSSL_EXPORT long SSL_get_default_timeout(const SSL *ssl);
+
+// SSL_get_version returns a string describing the TLS version used by |ssl|.
+// For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_get_version(const SSL *ssl);
+
+// SSL_get_cipher_list returns the name of the |n|th cipher in the output of
+// |SSL_get_ciphers| or NULL if out of range. Use |SSL_get_ciphers| instead.
+OPENSSL_EXPORT const char *SSL_get_cipher_list(const SSL *ssl, int n);
+
+// SSL_CTX_set_client_cert_cb sets a callback which is called on the client if
+// the server requests a client certificate and none is configured. On success,
+// the callback should return one and set |*out_x509| to |*out_pkey| to a leaf
+// certificate and private key, respectively, passing ownership. It should
+// return zero to send no certificate and -1 to fail or pause the handshake. If
+// the handshake is paused, |SSL_get_error| will return
+// |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// The callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate request.
+//
+// Use |SSL_CTX_set_cert_cb| instead. Configuring intermediate certificates with
+// this function is confusing. This callback may not be registered concurrently
+// with |SSL_CTX_set_cert_cb| or |SSL_set_cert_cb|.
+OPENSSL_EXPORT void SSL_CTX_set_client_cert_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, X509 **out_x509, EVP_PKEY **out_pkey));
+
+#define SSL_NOTHING SSL_ERROR_NONE
+#define SSL_WRITING SSL_ERROR_WANT_WRITE
+#define SSL_READING SSL_ERROR_WANT_READ
+
+// SSL_want returns one of the above values to determine what the most recent
+// operation on |ssl| was blocked on. Use |SSL_get_error| instead.
+OPENSSL_EXPORT int SSL_want(const SSL *ssl);
+
+#define SSL_want_read(ssl) (SSL_want(ssl) == SSL_READING)
+#define SSL_want_write(ssl) (SSL_want(ssl) == SSL_WRITING)
+
+ // SSL_get_finished writes up to |count| bytes of the Finished message sent by
+ // |ssl| to |buf|. It returns the total untruncated length or zero if none has
+ // been sent yet. At TLS 1.3 and later, it returns zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count);
+
+ // SSL_get_peer_finished writes up to |count| bytes of the Finished message
+ // received from |ssl|'s peer to |buf|. It returns the total untruncated length
+ // or zero if none has been received yet. At TLS 1.3 and later, it returns
+ // zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_peer_finished(const SSL *ssl, void *buf,
+                                            size_t count);
+
+// SSL_alert_type_string returns "!". Use |SSL_alert_type_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_type_string(int value);
+
+// SSL_alert_desc_string returns "!!". Use |SSL_alert_desc_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_desc_string(int value);
+
+// SSL_state_string returns "!!!!!!". Use |SSL_state_string_long| for a more
+// intelligible string.
+OPENSSL_EXPORT const char *SSL_state_string(const SSL *ssl);
+
+// SSL_TXT_* expand to strings.
+#define SSL_TXT_MEDIUM "MEDIUM"
+#define SSL_TXT_HIGH "HIGH"
+#define SSL_TXT_FIPS "FIPS"
+#define SSL_TXT_kRSA "kRSA"
+#define SSL_TXT_kDHE "kDHE"
+#define SSL_TXT_kEDH "kEDH"
+#define SSL_TXT_kECDHE "kECDHE"
+#define SSL_TXT_kEECDH "kEECDH"
+#define SSL_TXT_kPSK "kPSK"
+#define SSL_TXT_aRSA "aRSA"
+#define SSL_TXT_aECDSA "aECDSA"
+#define SSL_TXT_aPSK "aPSK"
+#define SSL_TXT_DH "DH"
+#define SSL_TXT_DHE "DHE"
+#define SSL_TXT_EDH "EDH"
+#define SSL_TXT_RSA "RSA"
+#define SSL_TXT_ECDH "ECDH"
+#define SSL_TXT_ECDHE "ECDHE"
+#define SSL_TXT_EECDH "EECDH"
+#define SSL_TXT_ECDSA "ECDSA"
+#define SSL_TXT_PSK "PSK"
+#define SSL_TXT_3DES "3DES"
+#define SSL_TXT_RC4 "RC4"
+#define SSL_TXT_AES128 "AES128"
+#define SSL_TXT_AES256 "AES256"
+#define SSL_TXT_AES "AES"
+#define SSL_TXT_AES_GCM "AESGCM"
+#define SSL_TXT_CHACHA20 "CHACHA20"
+#define SSL_TXT_MD5 "MD5"
+#define SSL_TXT_SHA1 "SHA1"
+#define SSL_TXT_SHA "SHA"
+#define SSL_TXT_SHA256 "SHA256"
+#define SSL_TXT_SHA384 "SHA384"
+#define SSL_TXT_SSLV3 "SSLv3"
+#define SSL_TXT_TLSV1 "TLSv1"
+#define SSL_TXT_TLSV1_1 "TLSv1.1"
+#define SSL_TXT_TLSV1_2 "TLSv1.2"
+#define SSL_TXT_TLSV1_3 "TLSv1.3"
+#define SSL_TXT_ALL "ALL"
+#define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
+
+typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
+
+// SSL_state returns |SSL_ST_INIT| if a handshake is in progress and |SSL_ST_OK|
+// otherwise.
+//
+// Use |SSL_is_init| instead.
+OPENSSL_EXPORT int SSL_state(const SSL *ssl);
+
+#define SSL_get_state(ssl) SSL_state(ssl)
+
+// SSL_set_shutdown causes |ssl| to behave as if the shutdown bitmask (see
+// |SSL_get_shutdown|) were |mode|. This may be used to skip sending or
+// receiving close_notify in |SSL_shutdown| by causing the implementation to
+// believe the events already happened.
+//
+// It is an error to use |SSL_set_shutdown| to unset a bit that has already been
+// set. Doing so will trigger an |assert| in debug builds and otherwise be
+// ignored.
+//
+// Use |SSL_CTX_set_quiet_shutdown| instead.
+OPENSSL_EXPORT void SSL_set_shutdown(SSL *ssl, int mode);
+
+// SSL_CTX_set_tmp_ecdh calls |SSL_CTX_set1_curves| with a one-element list
+// containing |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key);
+
+// SSL_set_tmp_ecdh calls |SSL_set1_curves| with a one-element list containing
+// |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key);
+
+// SSL_add_dir_cert_subjects_to_stack lists files in directory |dir|. It calls
+// |SSL_add_file_cert_subjects_to_stack| on each file and returns one on success
+// or zero on error. This function is only available from the libdecrepit
+// library.
+OPENSSL_EXPORT int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                      const char *dir);
+
+// SSL_set_verify_result calls |abort| unless |result| is |X509_V_OK|.
+//
+// TODO(davidben): Remove this function once it has been removed from
+// netty-tcnative.
+OPENSSL_EXPORT void SSL_set_verify_result(SSL *ssl, long result);
+
+// SSL_CTX_enable_tls_channel_id calls |SSL_CTX_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx);
+
+// SSL_enable_tls_channel_id calls |SSL_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_enable_tls_channel_id(SSL *ssl);
+
+// BIO_f_ssl returns a |BIO_METHOD| that can wrap an |SSL*| in a |BIO*|. Note
+// that this has quite different behaviour from the version in OpenSSL (notably
+// that it doesn't try to auto renegotiate).
+//
+// IMPORTANT: if you are not curl, don't use this.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_ssl(void);
+
+// BIO_set_ssl sets |ssl| as the underlying connection for |bio|, which must
+// have been created using |BIO_f_ssl|. If |take_owership| is true, |bio| will
+// call |SSL_free| on |ssl| when closed. It returns one on success or something
+// other than one on error.
+OPENSSL_EXPORT long BIO_set_ssl(BIO *bio, SSL *ssl, int take_owership);
+
+// SSL_CTX_set_ecdh_auto returns one.
+#define SSL_CTX_set_ecdh_auto(ctx, onoff) 1
+
+// SSL_set_ecdh_auto returns one.
+#define SSL_set_ecdh_auto(ssl, onoff) 1
+
+// SSL_get_session returns a non-owning pointer to |ssl|'s session. For
+// historical reasons, which session it returns depends on |ssl|'s state.
+//
+// Prior to the start of the initial handshake, it returns the session the
+// caller set with |SSL_set_session|. After the initial handshake has finished
+// and if no additional handshakes are in progress, it returns the currently
+// active session. Its behavior is undefined while a handshake is in progress.
+//
+// If trying to add new sessions to an external session cache, use
+// |SSL_CTX_sess_set_new_cb| instead. In particular, using the callback is
+// required as of TLS 1.3. For compatibility, this function will return an
+// unresumable session which may be cached, but will never be resumed.
+//
+// If querying properties of the connection, use APIs on the |SSL| object.
+OPENSSL_EXPORT SSL_SESSION *SSL_get_session(const SSL *ssl);
+
+// SSL_get0_session is an alias for |SSL_get_session|.
+#define SSL_get0_session SSL_get_session
+
+// SSL_get1_session acts like |SSL_get_session| but returns a new reference to
+// the session.
+OPENSSL_EXPORT SSL_SESSION *SSL_get1_session(SSL *ssl);
+
+#define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_SSL_DEFAULT 0
+
+// OPENSSL_init_ssl calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_ssl(uint64_t opts,
+                                    const OPENSSL_INIT_SETTINGS *settings);
+
+// The following constants are legacy aliases for RSA-PSS with rsaEncryption
+// keys. Use the new names instead.
+#define SSL_SIGN_RSA_PSS_SHA256 SSL_SIGN_RSA_PSS_RSAE_SHA256
+#define SSL_SIGN_RSA_PSS_SHA384 SSL_SIGN_RSA_PSS_RSAE_SHA384
+#define SSL_SIGN_RSA_PSS_SHA512 SSL_SIGN_RSA_PSS_RSAE_SHA512
+
+// SSL_set_tlsext_status_type configures a client to request OCSP stapling if
+// |type| is |TLSEXT_STATUSTYPE_ocsp| and disables it otherwise. It returns one
+// on success and zero if handshake configuration has already been shed.
+//
+// Use |SSL_enable_ocsp_stapling| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_type(SSL *ssl, int type);
+
+// SSL_get_tlsext_status_type returns |TLSEXT_STATUSTYPE_ocsp| if the client
+// requested OCSP stapling and |TLSEXT_STATUSTYPE_nothing| otherwise. On the
+// client, this reflects whether OCSP stapling was enabled via, e.g.,
+// |SSL_set_tlsext_status_type|. On the server, this is determined during the
+// handshake. It may be queried in callbacks set by |SSL_CTX_set_cert_cb|. The
+// result is undefined after the handshake completes.
+OPENSSL_EXPORT int SSL_get_tlsext_status_type(const SSL *ssl);
+
+// SSL_set_tlsext_status_ocsp_resp sets the OCSP response. It returns one on
+// success and zero on error. On success, |ssl| takes ownership of |resp|, which
+// must have been allocated by |OPENSSL_malloc|.
+//
+// Use |SSL_set_ocsp_response| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_ocsp_resp(SSL *ssl, uint8_t *resp,
+                                                   size_t resp_len);
+
+// SSL_get_tlsext_status_ocsp_resp sets |*out| to point to the OCSP response
+// from the server. It returns the length of the response. If there was no
+// response, it sets |*out| to NULL and returns zero.
+//
+// Use |SSL_get0_ocsp_response| instead.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT size_t SSL_get_tlsext_status_ocsp_resp(const SSL *ssl,
+                                                      const uint8_t **out);
+
+// SSL_CTX_set_tlsext_status_cb configures the legacy OpenSSL OCSP callback and
+// returns one. Though the type signature is the same, this callback has
+// different behavior for client and server connections:
+//
+// For clients, the callback is called after certificate verification. It should
+// return one for success, zero for a bad OCSP response, and a negative number
+// for internal error. Instead, handle this as part of certificate verification.
+// (Historically, OpenSSL verified certificates just before parsing stapled OCSP
+// responses, but BoringSSL fixes this ordering. All server credentials are
+// available during verification.)
+//
+// Do not use this callback as a server. It is provided for compatibility
+// purposes only. For servers, it is called to configure server credentials. It
+// should return |SSL_TLSEXT_ERR_OK| on success, |SSL_TLSEXT_ERR_NOACK| to
+// ignore OCSP requests, or |SSL_TLSEXT_ERR_ALERT_FATAL| on error. It is usually
+// used to fetch OCSP responses on demand, which is not ideal. Instead, treat
+// OCSP responses like other server credentials, such as certificates or SCT
+// lists. Configure, store, and refresh them eagerly. This avoids downtime if
+// the CA's OCSP responder is briefly offline.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx,
+                                                int (*callback)(SSL *ssl,
+                                                                void *arg));
+
+// SSL_CTX_set_tlsext_status_arg sets additional data for
+// |SSL_CTX_set_tlsext_status_cb|'s callback and returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg);
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define SSLerr(function, reason) \
+  ERR_put_error(ERR_LIB_SSL, 0, reason, __FILE__, __LINE__)
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+//
+// Although using either the CTRL values or their wrapper macros in #ifdefs is
+// still supported, the CTRL values may not be passed to |SSL_ctrl| and
+// |SSL_CTX_ctrl|. Call the functions (previously wrapper macros) instead.
+//
+// See PORTING.md in the BoringSSL source tree for a table of corresponding
+// functions.
+// https://boringssl.googlesource.com/boringssl/+/master/PORTING.md#Replacements-for-values
+
+#define DTLS_CTRL_GET_TIMEOUT doesnt_exist
+#define DTLS_CTRL_HANDLE_TIMEOUT doesnt_exist
+#define SSL_CTRL_CHAIN doesnt_exist
+#define SSL_CTRL_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_CLEAR_MODE doesnt_exist
+#define SSL_CTRL_CLEAR_OPTIONS doesnt_exist
+#define SSL_CTRL_EXTRA_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_GET_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_GET_CLIENT_CERT_TYPES doesnt_exist
+#define SSL_CTRL_GET_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_GET_NUM_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_GET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_GET_RI_SUPPORT doesnt_exist
+#define SSL_CTRL_GET_SERVER_TMP_KEY doesnt_exist
+#define SSL_CTRL_GET_SESSION_REUSED doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_MODE doesnt_exist
+#define SSL_CTRL_NEED_TMP_RSA doesnt_exist
+#define SSL_CTRL_OPTIONS doesnt_exist
+#define SSL_CTRL_SESS_NUMBER doesnt_exist
+#define SSL_CTRL_SET_CURVES doesnt_exist
+#define SSL_CTRL_SET_CURVES_LIST doesnt_exist
+#define SSL_CTRL_SET_ECDH_AUTO doesnt_exist
+#define SSL_CTRL_SET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_SET_MAX_SEND_FRAGMENT doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK_ARG doesnt_exist
+#define SSL_CTRL_SET_MTU doesnt_exist
+#define SSL_CTRL_SET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_HOSTNAME doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_DH doesnt_exist
+#define SSL_CTRL_SET_TMP_DH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA_CB doesnt_exist
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+
+#define SSL_CTX_set_tlsext_servername_callback \
+    SSL_CTX_set_tlsext_servername_callback
+#define SSL_get_secure_renegotiation_support \
+    SSL_get_secure_renegotiation_support
+
+#endif // !defined(BORINGSSL_PREFIX)
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SSL, SSL_free)
+BORINGSSL_MAKE_DELETER(SSL_CTX, SSL_CTX_free)
+BORINGSSL_MAKE_UP_REF(SSL_CTX, SSL_CTX_up_ref)
+BORINGSSL_MAKE_DELETER(SSL_SESSION, SSL_SESSION_free)
+BORINGSSL_MAKE_UP_REF(SSL_SESSION, SSL_SESSION_up_ref)
+
+enum class OpenRecordResult {
+  kOK,
+  kDiscard,
+  kIncompleteRecord,
+  kAlertCloseNotify,
+  kError,
+};
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// OpenRecord decrypts the first complete SSL record from |in| in-place, sets
+// |out| to the decrypted application data, and |out_record_len| to the length
+// of the encrypted record. Returns:
+// - kOK if an application-data record was successfully decrypted and verified.
+// - kDiscard if a record was sucessfully processed, but should be discarded.
+// - kIncompleteRecord if |in| did not contain a complete record.
+// - kAlertCloseNotify if a record was successfully processed but is a
+//   close_notify alert.
+// - kError if an error occurred or the record is invalid. |*out_alert| will be
+//   set to an alert to emit, or zero if no alert should be emitted.
+OPENSSL_EXPORT OpenRecordResult OpenRecord(SSL *ssl, Span<uint8_t> *out,
+                                           size_t *out_record_len,
+                                           uint8_t *out_alert,
+                                           Span<uint8_t> in);
+
+OPENSSL_EXPORT size_t SealRecordPrefixLen(const SSL *ssl, size_t plaintext_len);
+
+// SealRecordSuffixLen returns the length of the suffix written by |SealRecord|.
+//
+// |plaintext_len| must be equal to the size of the plaintext passed to
+// |SealRecord|.
+//
+// |plaintext_len| must not exceed |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The returned
+// suffix length will not exceed |SSL3_RT_MAX_ENCRYPTED_OVERHEAD|.
+OPENSSL_EXPORT size_t SealRecordSuffixLen(const SSL *ssl, size_t plaintext_len);
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// SealRecord encrypts the cleartext of |in| and scatters the resulting TLS
+// application data record between |out_prefix|, |out|, and |out_suffix|. It
+// returns true on success or false if an error occurred.
+//
+// The length of |out_prefix| must equal |SealRecordPrefixLen|. The length of
+// |out| must equal the length of |in|, which must not exceed
+// |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The length of |out_suffix| must equal
+// |SealRecordSuffixLen|.
+//
+// If enabled, |SealRecord| may perform TLS 1.0 CBC 1/n-1 record splitting.
+// |SealRecordPrefixLen| accounts for the required overhead if that is the case.
+//
+// |out| may equal |in| to encrypt in-place but may not otherwise alias.
+// |out_prefix| and |out_suffix| may not alias anything.
+OPENSSL_EXPORT bool SealRecord(SSL *ssl, Span<uint8_t> out_prefix,
+                               Span<uint8_t> out, Span<uint8_t> out_suffix,
+                               Span<const uint8_t> in);
+
+
+// *** EXPERIMENTAL — DO NOT USE WITHOUT CHECKING ***
+//
+// Split handshakes.
+//
+// Split handshakes allows the handshake part of a TLS connection to be
+// performed in a different process (or on a different machine) than the data
+// exchange. This only applies to servers.
+//
+// In the first part of a split handshake, an |SSL| (where the |SSL_CTX| has
+// been configured with |SSL_CTX_set_handoff_mode|) is used normally. Once the
+// ClientHello message has been received, the handshake will stop and
+// |SSL_get_error| will indicate |SSL_ERROR_HANDOFF|. At this point (and only
+// at this point), |SSL_serialize_handoff| can be called to write the “handoff”
+// state of the connection.
+//
+// Elsewhere, a fresh |SSL| can be used with |SSL_apply_handoff| to continue
+// the connection. The connection from the client is fed into this |SSL|, and
+// the handshake resumed. When the handshake stops again and |SSL_get_error|
+// indicates |SSL_ERROR_HANDBACK|, |SSL_serialize_handback| should be called to
+// serialize the state of the handshake again.
+//
+// Back at the first location, a fresh |SSL| can be used with
+// |SSL_apply_handback|. Then the client's connection can be processed mostly
+// as normal.
+//
+// Lastly, when a connection is in the handoff state, whether or not
+// |SSL_serialize_handoff| is called, |SSL_decline_handoff| will move it back
+// into a normal state where the connection can proceed without impact.
+//
+// WARNING: Currently only works with TLS 1.0–1.2.
+// WARNING: The serialisation formats are not yet stable: version skew may be
+//     fatal.
+// WARNING: The handback data contains sensitive key material and must be
+//     protected.
+// WARNING: Some calls on the final |SSL| will not work. Just as an example,
+//     calls like |SSL_get0_session_id_context| and |SSL_get_privatekey| won't
+//     work because the certificate used for handshaking isn't available.
+// WARNING: |SSL_apply_handoff| may trigger “msg” callback calls.
+
+OPENSSL_EXPORT void SSL_CTX_set_handoff_mode(SSL_CTX *ctx, bool on);
+OPENSSL_EXPORT void SSL_set_handoff_mode(SSL *SSL, bool on);
+OPENSSL_EXPORT bool SSL_serialize_handoff(const SSL *ssl, CBB *out,
+                                          SSL_CLIENT_HELLO *out_hello);
+OPENSSL_EXPORT bool SSL_decline_handoff(SSL *ssl);
+OPENSSL_EXPORT bool SSL_apply_handoff(SSL *ssl, Span<const uint8_t> handoff);
+OPENSSL_EXPORT bool SSL_serialize_handback(const SSL *ssl, CBB *out);
+OPENSSL_EXPORT bool SSL_apply_handback(SSL *ssl, Span<const uint8_t> handback);
+
+// SSL_get_traffic_secrets sets |*out_read_traffic_secret| and
+// |*out_write_traffic_secret| to reference the TLS 1.3 traffic secrets for
+// |ssl|. This function is only valid on TLS 1.3 connections that have
+// completed the handshake. It returns true on success and false on error.
+OPENSSL_EXPORT bool SSL_get_traffic_secrets(
+    const SSL *ssl, Span<const uint8_t> *out_read_traffic_secret,
+    Span<const uint8_t> *out_write_traffic_secret);
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif
+
+#define SSL_R_APP_DATA_IN_HANDSHAKE 100
+#define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 101
+#define SSL_R_BAD_ALERT 102
+#define SSL_R_BAD_CHANGE_CIPHER_SPEC 103
+#define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK 104
+#define SSL_R_BAD_DH_P_LENGTH 105
+#define SSL_R_BAD_DIGEST_LENGTH 106
+#define SSL_R_BAD_ECC_CERT 107
+#define SSL_R_BAD_ECPOINT 108
+#define SSL_R_BAD_HANDSHAKE_RECORD 109
+#define SSL_R_BAD_HELLO_REQUEST 110
+#define SSL_R_BAD_LENGTH 111
+#define SSL_R_BAD_PACKET_LENGTH 112
+#define SSL_R_BAD_RSA_ENCRYPT 113
+#define SSL_R_BAD_SIGNATURE 114
+#define SSL_R_BAD_SRTP_MKI_VALUE 115
+#define SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST 116
+#define SSL_R_BAD_SSL_FILETYPE 117
+#define SSL_R_BAD_WRITE_RETRY 118
+#define SSL_R_BIO_NOT_SET 119
+#define SSL_R_BN_LIB 120
+#define SSL_R_BUFFER_TOO_SMALL 121
+#define SSL_R_CA_DN_LENGTH_MISMATCH 122
+#define SSL_R_CA_DN_TOO_LONG 123
+#define SSL_R_CCS_RECEIVED_EARLY 124
+#define SSL_R_CERTIFICATE_VERIFY_FAILED 125
+#define SSL_R_CERT_CB_ERROR 126
+#define SSL_R_CERT_LENGTH_MISMATCH 127
+#define SSL_R_CHANNEL_ID_NOT_P256 128
+#define SSL_R_CHANNEL_ID_SIGNATURE_INVALID 129
+#define SSL_R_CIPHER_OR_HASH_UNAVAILABLE 130
+#define SSL_R_CLIENTHELLO_PARSE_FAILED 131
+#define SSL_R_CLIENTHELLO_TLSEXT 132
+#define SSL_R_CONNECTION_REJECTED 133
+#define SSL_R_CONNECTION_TYPE_NOT_SET 134
+#define SSL_R_CUSTOM_EXTENSION_ERROR 135
+#define SSL_R_DATA_LENGTH_TOO_LONG 136
+#define SSL_R_DECODE_ERROR 137
+#define SSL_R_DECRYPTION_FAILED 138
+#define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC 139
+#define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG 140
+#define SSL_R_DH_P_TOO_LONG 141
+#define SSL_R_DIGEST_CHECK_FAILED 142
+#define SSL_R_DTLS_MESSAGE_TOO_BIG 143
+#define SSL_R_ECC_CERT_NOT_FOR_SIGNING 144
+#define SSL_R_EMS_STATE_INCONSISTENT 145
+#define SSL_R_ENCRYPTED_LENGTH_TOO_LONG 146
+#define SSL_R_ERROR_ADDING_EXTENSION 147
+#define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST 148
+#define SSL_R_ERROR_PARSING_EXTENSION 149
+#define SSL_R_EXCESSIVE_MESSAGE_SIZE 150
+#define SSL_R_EXTRA_DATA_IN_MESSAGE 151
+#define SSL_R_FRAGMENT_MISMATCH 152
+#define SSL_R_GOT_NEXT_PROTO_WITHOUT_EXTENSION 153
+#define SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO 154
+#define SSL_R_HTTPS_PROXY_REQUEST 155
+#define SSL_R_HTTP_REQUEST 156
+#define SSL_R_INAPPROPRIATE_FALLBACK 157
+#define SSL_R_INVALID_COMMAND 158
+#define SSL_R_INVALID_MESSAGE 159
+#define SSL_R_INVALID_SSL_SESSION 160
+#define SSL_R_INVALID_TICKET_KEYS_LENGTH 161
+#define SSL_R_LENGTH_MISMATCH 162
+#define SSL_R_MISSING_EXTENSION 164
+#define SSL_R_MISSING_RSA_CERTIFICATE 165
+#define SSL_R_MISSING_TMP_DH_KEY 166
+#define SSL_R_MISSING_TMP_ECDH_KEY 167
+#define SSL_R_MIXED_SPECIAL_OPERATOR_WITH_GROUPS 168
+#define SSL_R_MTU_TOO_SMALL 169
+#define SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN 170
+#define SSL_R_NESTED_GROUP 171
+#define SSL_R_NO_CERTIFICATES_RETURNED 172
+#define SSL_R_NO_CERTIFICATE_ASSIGNED 173
+#define SSL_R_NO_CERTIFICATE_SET 174
+#define SSL_R_NO_CIPHERS_AVAILABLE 175
+#define SSL_R_NO_CIPHERS_PASSED 176
+#define SSL_R_NO_CIPHER_MATCH 177
+#define SSL_R_NO_COMPRESSION_SPECIFIED 178
+#define SSL_R_NO_METHOD_SPECIFIED 179
+#define SSL_R_NO_P256_SUPPORT 180
+#define SSL_R_NO_PRIVATE_KEY_ASSIGNED 181
+#define SSL_R_NO_RENEGOTIATION 182
+#define SSL_R_NO_REQUIRED_DIGEST 183
+#define SSL_R_NO_SHARED_CIPHER 184
+#define SSL_R_NULL_SSL_CTX 185
+#define SSL_R_NULL_SSL_METHOD_PASSED 186
+#define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED 187
+#define SSL_R_OLD_SESSION_VERSION_NOT_RETURNED 188
+#define SSL_R_OUTPUT_ALIASES_INPUT 189
+#define SSL_R_PARSE_TLSEXT 190
+#define SSL_R_PATH_TOO_LONG 191
+#define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE 192
+#define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE 193
+#define SSL_R_PROTOCOL_IS_SHUTDOWN 194
+#define SSL_R_PSK_IDENTITY_NOT_FOUND 195
+#define SSL_R_PSK_NO_CLIENT_CB 196
+#define SSL_R_PSK_NO_SERVER_CB 197
+#define SSL_R_READ_TIMEOUT_EXPIRED 198
+#define SSL_R_RECORD_LENGTH_MISMATCH 199
+#define SSL_R_RECORD_TOO_LARGE 200
+#define SSL_R_RENEGOTIATION_ENCODING_ERR 201
+#define SSL_R_RENEGOTIATION_MISMATCH 202
+#define SSL_R_REQUIRED_CIPHER_MISSING 203
+#define SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION 204
+#define SSL_R_RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION 205
+#define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING 206
+#define SSL_R_SERVERHELLO_TLSEXT 207
+#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED 208
+#define SSL_R_SESSION_MAY_NOT_BE_CREATED 209
+#define SSL_R_SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER 210
+#define SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES 211
+#define SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE 212
+#define SSL_R_SSL3_EXT_INVALID_SERVERNAME 213
+#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION 214
+#define SSL_R_SSL_HANDSHAKE_FAILURE 215
+#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG 216
+#define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 217
+#define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG 218
+#define SSL_R_TOO_MANY_EMPTY_FRAGMENTS 219
+#define SSL_R_TOO_MANY_WARNING_ALERTS 220
+#define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS 221
+#define SSL_R_UNEXPECTED_EXTENSION 222
+#define SSL_R_UNEXPECTED_MESSAGE 223
+#define SSL_R_UNEXPECTED_OPERATOR_IN_GROUP 224
+#define SSL_R_UNEXPECTED_RECORD 225
+#define SSL_R_UNINITIALIZED 226
+#define SSL_R_UNKNOWN_ALERT_TYPE 227
+#define SSL_R_UNKNOWN_CERTIFICATE_TYPE 228
+#define SSL_R_UNKNOWN_CIPHER_RETURNED 229
+#define SSL_R_UNKNOWN_CIPHER_TYPE 230
+#define SSL_R_UNKNOWN_DIGEST 231
+#define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE 232
+#define SSL_R_UNKNOWN_PROTOCOL 233
+#define SSL_R_UNKNOWN_SSL_VERSION 234
+#define SSL_R_UNKNOWN_STATE 235
+#define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED 236
+#define SSL_R_UNSUPPORTED_CIPHER 237
+#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM 238
+#define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE 239
+#define SSL_R_UNSUPPORTED_PROTOCOL 240
+#define SSL_R_WRONG_CERTIFICATE_TYPE 241
+#define SSL_R_WRONG_CIPHER_RETURNED 242
+#define SSL_R_WRONG_CURVE 243
+#define SSL_R_WRONG_MESSAGE_TYPE 244
+#define SSL_R_WRONG_SIGNATURE_TYPE 245
+#define SSL_R_WRONG_SSL_VERSION 246
+#define SSL_R_WRONG_VERSION_NUMBER 247
+#define SSL_R_X509_LIB 248
+#define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS 249
+#define SSL_R_SHUTDOWN_WHILE_IN_INIT 250
+#define SSL_R_INVALID_OUTER_RECORD_TYPE 251
+#define SSL_R_UNSUPPORTED_PROTOCOL_FOR_CUSTOM_KEY 252
+#define SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS 253
+#define SSL_R_DOWNGRADE_DETECTED 254
+#define SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE 255
+#define SSL_R_INVALID_COMPRESSION_LIST 256
+#define SSL_R_DUPLICATE_EXTENSION 257
+#define SSL_R_MISSING_KEY_SHARE 258
+#define SSL_R_INVALID_ALPN_PROTOCOL 259
+#define SSL_R_TOO_MANY_KEY_UPDATES 260
+#define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG 261
+#define SSL_R_NO_CIPHERS_SPECIFIED 262
+#define SSL_R_RENEGOTIATION_EMS_MISMATCH 263
+#define SSL_R_DUPLICATE_KEY_SHARE 264
+#define SSL_R_NO_GROUPS_SPECIFIED 265
+#define SSL_R_NO_SHARED_GROUP 266
+#define SSL_R_PRE_SHARED_KEY_MUST_BE_LAST 267
+#define SSL_R_OLD_SESSION_PRF_HASH_MISMATCH 268
+#define SSL_R_INVALID_SCT_LIST 269
+#define SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA 270
+#define SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH 271
+#define SSL_R_CANNOT_PARSE_LEAF_CERT 272
+#define SSL_R_SERVER_CERT_CHANGED 273
+#define SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH 274
+#define SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD 275
+#define SSL_R_TICKET_ENCRYPTION_FAILED 276
+#define SSL_R_ALPN_MISMATCH_ON_EARLY_DATA 277
+#define SSL_R_WRONG_VERSION_ON_EARLY_DATA 278
+#define SSL_R_UNEXPECTED_EXTENSION_ON_EARLY_DATA 279
+#define SSL_R_NO_SUPPORTED_VERSIONS_ENABLED 280
+#define SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE 281
+#define SSL_R_EMPTY_HELLO_RETRY_REQUEST 282
+#define SSL_R_EARLY_DATA_NOT_IN_USE 283
+#define SSL_R_HANDSHAKE_NOT_COMPLETE 284
+#define SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI 285
+#define SSL_R_SERVER_ECHOED_INVALID_SESSION_ID 286
+#define SSL_R_PRIVATE_KEY_OPERATION_FAILED 287
+#define SSL_R_SECOND_SERVERHELLO_VERSION_MISMATCH 288
+#define SSL_R_OCSP_CB_ERROR 289
+#define SSL_R_SSL_SESSION_ID_TOO_LONG 290
+#define SSL_R_APPLICATION_DATA_ON_SHUTDOWN 291
+#define SSL_R_CERT_DECOMPRESSION_FAILED 292
+#define SSL_R_UNCOMPRESSED_CERT_TOO_LARGE 293
+#define SSL_R_UNKNOWN_CERT_COMPRESSION_ALG 294
+#define SSL_R_INVALID_SIGNATURE_ALGORITHM 295
+#define SSL_R_DUPLICATE_SIGNATURE_ALGORITHM 296
+#define SSL_R_TLS13_DOWNGRADE 297
+#define SSL_R_QUIC_INTERNAL_ERROR 298
+#define SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED 299
+#define SSL_R_TOO_MUCH_READ_EARLY_DATA 300
+#define SSL_R_INVALID_DELEGATED_CREDENTIAL 301
+#define SSL_R_KEY_USAGE_BIT_INCORRECT 302
+#define SSL_R_INCONSISTENT_CLIENT_HELLO 303
+#define SSL_R_SSLV3_ALERT_CLOSE_NOTIFY 1000
+#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE 1010
+#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC 1020
+#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED 1021
+#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW 1022
+#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE 1030
+#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE 1040
+#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE 1041
+#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE 1042
+#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE 1043
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED 1044
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED 1045
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN 1046
+#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER 1047
+#define SSL_R_TLSV1_ALERT_UNKNOWN_CA 1048
+#define SSL_R_TLSV1_ALERT_ACCESS_DENIED 1049
+#define SSL_R_TLSV1_ALERT_DECODE_ERROR 1050
+#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR 1051
+#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION 1060
+#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION 1070
+#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY 1071
+#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR 1080
+#define SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK 1086
+#define SSL_R_TLSV1_ALERT_USER_CANCELLED 1090
+#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION 1100
+#define SSL_R_TLSV1_UNSUPPORTED_EXTENSION 1110
+#define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE 1111
+#define SSL_R_TLSV1_UNRECOGNIZED_NAME 1112
+#define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE 1113
+#define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE 1114
+#define SSL_R_TLSV1_UNKNOWN_PSK_IDENTITY 1115
+#define SSL_R_TLSV1_CERTIFICATE_REQUIRED 1116
+
+#endif  // OPENSSL_HEADER_SSL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.grpc_back
new file mode 100644
index 0000000..858ccfa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl.h.grpc_back	
@@ -0,0 +1,5035 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_SSL_H
+#define OPENSSL_HEADER_SSL_H
+
+#include <openssl/base.h>
+
+#include <openssl/bio.h>
+#include <openssl/buf.h>
+#include <openssl/pem.h>
+#include <openssl/span.h>
+#include <openssl/ssl3.h>
+#include <openssl/thread.h>
+#include <openssl/tls1.h>
+#include <openssl/x509.h>
+
+#if !defined(OPENSSL_WINDOWS)
+#include <sys/time.h>
+#endif
+
+// NGINX needs this #include. Consider revisiting this after NGINX 1.14.0 has
+// been out for a year or so (assuming that they fix it in that release.) See
+// https://boringssl-review.googlesource.com/c/boringssl/+/21664.
+#include <openssl/hmac.h>
+
+// Forward-declare struct timeval. On Windows, it is defined in winsock2.h and
+// Windows headers define too many macros to be included in public headers.
+// However, only a forward declaration is needed.
+struct timeval;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// SSL implementation.
+
+
+// SSL contexts.
+//
+// |SSL_CTX| objects manage shared state and configuration between multiple TLS
+// or DTLS connections. Whether the connections are TLS or DTLS is selected by
+// an |SSL_METHOD| on creation.
+//
+// |SSL_CTX| are reference-counted and may be shared by connections across
+// multiple threads. Once shared, functions which change the |SSL_CTX|'s
+// configuration may not be used.
+
+// TLS_method is the |SSL_METHOD| used for TLS connections.
+OPENSSL_EXPORT const SSL_METHOD *TLS_method(void);
+
+// DTLS_method is the |SSL_METHOD| used for DTLS connections.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_method(void);
+
+// TLS_with_buffers_method is like |TLS_method|, but avoids all use of
+// crypto/x509. All client connections created with |TLS_with_buffers_method|
+// will fail unless a certificate verifier is installed with
+// |SSL_set_custom_verify| or |SSL_CTX_set_custom_verify|.
+OPENSSL_EXPORT const SSL_METHOD *TLS_with_buffers_method(void);
+
+// DTLS_with_buffers_method is like |DTLS_method|, but avoids all use of
+// crypto/x509.
+OPENSSL_EXPORT const SSL_METHOD *DTLS_with_buffers_method(void);
+
+// SSL_CTX_new returns a newly-allocated |SSL_CTX| with default settings or NULL
+// on error.
+OPENSSL_EXPORT SSL_CTX *SSL_CTX_new(const SSL_METHOD *method);
+
+// SSL_CTX_up_ref increments the reference count of |ctx|. It returns one.
+OPENSSL_EXPORT int SSL_CTX_up_ref(SSL_CTX *ctx);
+
+// SSL_CTX_free releases memory associated with |ctx|.
+OPENSSL_EXPORT void SSL_CTX_free(SSL_CTX *ctx);
+
+
+// SSL connections.
+//
+// An |SSL| object represents a single TLS or DTLS connection. Although the
+// shared |SSL_CTX| is thread-safe, an |SSL| is not thread-safe and may only be
+// used on one thread at a time.
+
+// SSL_new returns a newly-allocated |SSL| using |ctx| or NULL on error. The new
+// connection inherits settings from |ctx| at the time of creation. Settings may
+// also be individually configured on the connection.
+//
+// On creation, an |SSL| is not configured to be either a client or server. Call
+// |SSL_set_connect_state| or |SSL_set_accept_state| to set this.
+OPENSSL_EXPORT SSL *SSL_new(SSL_CTX *ctx);
+
+// SSL_free releases memory associated with |ssl|.
+OPENSSL_EXPORT void SSL_free(SSL *ssl);
+
+// SSL_get_SSL_CTX returns the |SSL_CTX| associated with |ssl|. If
+// |SSL_set_SSL_CTX| is called, it returns the new |SSL_CTX|, not the initial
+// one.
+OPENSSL_EXPORT SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
+
+// SSL_set_connect_state configures |ssl| to be a client.
+OPENSSL_EXPORT void SSL_set_connect_state(SSL *ssl);
+
+// SSL_set_accept_state configures |ssl| to be a server.
+OPENSSL_EXPORT void SSL_set_accept_state(SSL *ssl);
+
+// SSL_is_server returns one if |ssl| is configured as a server and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_is_server(const SSL *ssl);
+
+// SSL_is_dtls returns one if |ssl| is a DTLS connection and zero otherwise.
+OPENSSL_EXPORT int SSL_is_dtls(const SSL *ssl);
+
+// SSL_set_bio configures |ssl| to read from |rbio| and write to |wbio|. |ssl|
+// takes ownership of the two |BIO|s. If |rbio| and |wbio| are the same, |ssl|
+// only takes ownership of one reference.
+//
+// In DTLS, |rbio| must be non-blocking to properly handle timeouts and
+// retransmits.
+//
+// If |rbio| is the same as the currently configured |BIO| for reading, that
+// side is left untouched and is not freed.
+//
+// If |wbio| is the same as the currently configured |BIO| for writing AND |ssl|
+// is not currently configured to read from and write to the same |BIO|, that
+// side is left untouched and is not freed. This asymmetry is present for
+// historical reasons.
+//
+// Due to the very complex historical behavior of this function, calling this
+// function if |ssl| already has |BIO|s configured is deprecated. Prefer
+// |SSL_set0_rbio| and |SSL_set0_wbio| instead.
+OPENSSL_EXPORT void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio);
+
+// SSL_set0_rbio configures |ssl| to write to |rbio|. It takes ownership of
+// |rbio|.
+//
+// Note that, although this function and |SSL_set0_wbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_rbio(SSL *ssl, BIO *rbio);
+
+// SSL_set0_wbio configures |ssl| to write to |wbio|. It takes ownership of
+// |wbio|.
+//
+// Note that, although this function and |SSL_set0_rbio| may be called on the
+// same |BIO|, each call takes a reference. Use |BIO_up_ref| to balance this.
+OPENSSL_EXPORT void SSL_set0_wbio(SSL *ssl, BIO *wbio);
+
+// SSL_get_rbio returns the |BIO| that |ssl| reads from.
+OPENSSL_EXPORT BIO *SSL_get_rbio(const SSL *ssl);
+
+// SSL_get_wbio returns the |BIO| that |ssl| writes to.
+OPENSSL_EXPORT BIO *SSL_get_wbio(const SSL *ssl);
+
+// SSL_get_fd calls |SSL_get_rfd|.
+OPENSSL_EXPORT int SSL_get_fd(const SSL *ssl);
+
+// SSL_get_rfd returns the file descriptor that |ssl| is configured to read
+// from. If |ssl|'s read |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_rfd(const SSL *ssl);
+
+// SSL_get_wfd returns the file descriptor that |ssl| is configured to write
+// to. If |ssl|'s write |BIO| is not configured or doesn't wrap a file
+// descriptor then it returns -1.
+//
+// Note: On Windows, this may return either a file descriptor or a socket (cast
+// to int), depending on whether |ssl| was configured with a file descriptor or
+// socket |BIO|.
+OPENSSL_EXPORT int SSL_get_wfd(const SSL *ssl);
+
+// SSL_set_fd configures |ssl| to read from and write to |fd|. It returns one
+// on success and zero on allocation error. The caller retains ownership of
+// |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_fd(SSL *ssl, int fd);
+
+// SSL_set_rfd configures |ssl| to read from |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_rfd(SSL *ssl, int fd);
+
+// SSL_set_wfd configures |ssl| to write to |fd|. It returns one on success and
+// zero on allocation error. The caller retains ownership of |fd|.
+//
+// On Windows, |fd| is cast to a |SOCKET| and used with Winsock APIs.
+OPENSSL_EXPORT int SSL_set_wfd(SSL *ssl, int fd);
+
+// SSL_do_handshake continues the current handshake. If there is none or the
+// handshake has completed or False Started, it returns one. Otherwise, it
+// returns <= 0. The caller should pass the value into |SSL_get_error| to
+// determine how to proceed.
+//
+// In DTLS, the caller must drive retransmissions. Whenever |SSL_get_error|
+// signals |SSL_ERROR_WANT_READ|, use |DTLSv1_get_timeout| to determine the
+// current timeout. If it expires before the next retry, call
+// |DTLSv1_handle_timeout|. Note that DTLS handshake retransmissions use fresh
+// sequence numbers, so it is not sufficient to replay packets at the transport.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_do_handshake(SSL *ssl);
+
+// SSL_connect configures |ssl| as a client, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_connect(SSL *ssl);
+
+// SSL_accept configures |ssl| as a server, if unconfigured, and calls
+// |SSL_do_handshake|.
+OPENSSL_EXPORT int SSL_accept(SSL *ssl);
+
+// SSL_read reads up to |num| bytes from |ssl| into |buf|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes read. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_read(SSL *ssl, void *buf, int num);
+
+// SSL_peek behaves like |SSL_read| but does not consume any bytes returned.
+OPENSSL_EXPORT int SSL_peek(SSL *ssl, void *buf, int num);
+
+// SSL_pending returns the number of bytes available in |ssl|. It does not read
+// from the transport.
+OPENSSL_EXPORT int SSL_pending(const SSL *ssl);
+
+// SSL_write writes up to |num| bytes from |buf| into |ssl|. It implicitly runs
+// any pending handshakes, including renegotiations when enabled. On success, it
+// returns the number of bytes written. Otherwise, it returns <= 0. The caller
+// should pass the value into |SSL_get_error| to determine how to proceed.
+//
+// In TLS, a non-blocking |SSL_write| differs from non-blocking |write| in that
+// a failed |SSL_write| still commits to the data passed in. When retrying, the
+// caller must supply the original write buffer (or a larger one containing the
+// original as a prefix). By default, retries will fail if they also do not
+// reuse the same |buf| pointer. This may be relaxed with
+// |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER|, but the buffer contents still must be
+// unchanged.
+//
+// By default, in TLS, |SSL_write| will not return success until all |num| bytes
+// are written. This may be relaxed with |SSL_MODE_ENABLE_PARTIAL_WRITE|. It
+// allows |SSL_write| to complete with a partial result when only part of the
+// input was written in a single record.
+//
+// In DTLS, neither |SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER| and
+// |SSL_MODE_ENABLE_PARTIAL_WRITE| do anything. The caller may retry with a
+// different buffer freely. A single call to |SSL_write| only ever writes a
+// single record in a single packet, so |num| must be at most
+// |SSL3_RT_MAX_PLAIN_LENGTH|.
+//
+// TODO(davidben): Ensure 0 is only returned on transport EOF.
+// https://crbug.com/466303.
+OPENSSL_EXPORT int SSL_write(SSL *ssl, const void *buf, int num);
+
+// SSL_KEY_UPDATE_REQUESTED indicates that the peer should reply to a KeyUpdate
+// message with its own, thus updating traffic secrets for both directions on
+// the connection.
+#define SSL_KEY_UPDATE_REQUESTED 1
+
+// SSL_KEY_UPDATE_NOT_REQUESTED indicates that the peer should not reply with
+// it's own KeyUpdate message.
+#define SSL_KEY_UPDATE_NOT_REQUESTED 0
+
+// SSL_key_update queues a TLS 1.3 KeyUpdate message to be sent on |ssl|
+// if one is not already queued. The |request_type| argument must one of the
+// |SSL_KEY_UPDATE_*| values. This function requires that |ssl| have completed a
+// TLS >= 1.3 handshake. It returns one on success or zero on error.
+//
+// Note that this function does not _send_ the message itself. The next call to
+// |SSL_write| will cause the message to be sent. |SSL_write| may be called with
+// a zero length to flush a KeyUpdate message when no application data is
+// pending.
+OPENSSL_EXPORT int SSL_key_update(SSL *ssl, int request_type);
+
+// SSL_shutdown shuts down |ssl|. It runs in two stages. First, it sends
+// close_notify and returns zero or one on success or -1 on failure. Zero
+// indicates that close_notify was sent, but not received, and one additionally
+// indicates that the peer's close_notify had already been received.
+//
+// To then wait for the peer's close_notify, run |SSL_shutdown| to completion a
+// second time. This returns 1 on success and -1 on failure. Application data
+// is considered a fatal error at this point. To process or discard it, read
+// until close_notify with |SSL_read| instead.
+//
+// In both cases, on failure, pass the return value into |SSL_get_error| to
+// determine how to proceed.
+//
+// Most callers should stop at the first stage. Reading for close_notify is
+// primarily used for uncommon protocols where the underlying transport is
+// reused after TLS completes. Additionally, DTLS uses an unordered transport
+// and is unordered, so the second stage is a no-op in DTLS.
+OPENSSL_EXPORT int SSL_shutdown(SSL *ssl);
+
+// SSL_CTX_set_quiet_shutdown sets quiet shutdown on |ctx| to |mode|. If
+// enabled, |SSL_shutdown| will not send a close_notify alert or wait for one
+// from the peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ctx|.
+OPENSSL_EXPORT int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
+
+// SSL_set_quiet_shutdown sets quiet shutdown on |ssl| to |mode|. If enabled,
+// |SSL_shutdown| will not send a close_notify alert or wait for one from the
+// peer. It will instead synchronously return one.
+OPENSSL_EXPORT void SSL_set_quiet_shutdown(SSL *ssl, int mode);
+
+// SSL_get_quiet_shutdown returns whether quiet shutdown is enabled for
+// |ssl|.
+OPENSSL_EXPORT int SSL_get_quiet_shutdown(const SSL *ssl);
+
+// SSL_get_error returns a |SSL_ERROR_*| value for the most recent operation on
+// |ssl|. It should be called after an operation failed to determine whether the
+// error was fatal and, if not, when to retry.
+OPENSSL_EXPORT int SSL_get_error(const SSL *ssl, int ret_code);
+
+// SSL_ERROR_NONE indicates the operation succeeded.
+#define SSL_ERROR_NONE 0
+
+// SSL_ERROR_SSL indicates the operation failed within the library. The caller
+// may inspect the error queue for more information.
+#define SSL_ERROR_SSL 1
+
+// SSL_ERROR_WANT_READ indicates the operation failed attempting to read from
+// the transport. The caller may retry the operation when the transport is ready
+// for reading.
+//
+// If signaled by a DTLS handshake, the caller must also call
+// |DTLSv1_get_timeout| and |DTLSv1_handle_timeout| as appropriate. See
+// |SSL_do_handshake|.
+#define SSL_ERROR_WANT_READ 2
+
+// SSL_ERROR_WANT_WRITE indicates the operation failed attempting to write to
+// the transport. The caller may retry the operation when the transport is ready
+// for writing.
+#define SSL_ERROR_WANT_WRITE 3
+
+// SSL_ERROR_WANT_X509_LOOKUP indicates the operation failed in calling the
+// |cert_cb| or |client_cert_cb|. The caller may retry the operation when the
+// callback is ready to return a certificate or one has been configured
+// externally.
+//
+// See also |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb|.
+#define SSL_ERROR_WANT_X509_LOOKUP 4
+
+// SSL_ERROR_SYSCALL indicates the operation failed externally to the library.
+// The caller should consult the system-specific error mechanism. This is
+// typically |errno| but may be something custom if using a custom |BIO|. It
+// may also be signaled if the transport returned EOF, in which case the
+// operation's return value will be zero.
+#define SSL_ERROR_SYSCALL 5
+
+// SSL_ERROR_ZERO_RETURN indicates the operation failed because the connection
+// was cleanly shut down with a close_notify alert.
+#define SSL_ERROR_ZERO_RETURN 6
+
+// SSL_ERROR_WANT_CONNECT indicates the operation failed attempting to connect
+// the transport (the |BIO| signaled |BIO_RR_CONNECT|). The caller may retry the
+// operation when the transport is ready.
+#define SSL_ERROR_WANT_CONNECT 7
+
+// SSL_ERROR_WANT_ACCEPT indicates the operation failed attempting to accept a
+// connection from the transport (the |BIO| signaled |BIO_RR_ACCEPT|). The
+// caller may retry the operation when the transport is ready.
+//
+// TODO(davidben): Remove this. It's used by accept BIOs which are bizarre.
+#define SSL_ERROR_WANT_ACCEPT 8
+
+// SSL_ERROR_WANT_CHANNEL_ID_LOOKUP indicates the operation failed looking up
+// the Channel ID key. The caller may retry the operation when |channel_id_cb|
+// is ready to return a key or one has been configured with
+// |SSL_set1_tls_channel_id|.
+//
+// See also |SSL_CTX_set_channel_id_cb|.
+#define SSL_ERROR_WANT_CHANNEL_ID_LOOKUP 9
+
+// SSL_ERROR_PENDING_SESSION indicates the operation failed because the session
+// lookup callback indicated the session was unavailable. The caller may retry
+// the operation when lookup has completed.
+//
+// See also |SSL_CTX_sess_set_get_cb| and |SSL_magic_pending_session_ptr|.
+#define SSL_ERROR_PENDING_SESSION 11
+
+// SSL_ERROR_PENDING_CERTIFICATE indicates the operation failed because the
+// early callback indicated certificate lookup was incomplete. The caller may
+// retry the operation when lookup has completed.
+//
+// See also |SSL_CTX_set_select_certificate_cb|.
+#define SSL_ERROR_PENDING_CERTIFICATE 12
+
+// SSL_ERROR_WANT_PRIVATE_KEY_OPERATION indicates the operation failed because
+// a private key operation was unfinished. The caller may retry the operation
+// when the private key operation is complete.
+//
+// See also |SSL_set_private_key_method| and
+// |SSL_CTX_set_private_key_method|.
+#define SSL_ERROR_WANT_PRIVATE_KEY_OPERATION 13
+
+// SSL_ERROR_PENDING_TICKET indicates that a ticket decryption is pending. The
+// caller may retry the operation when the decryption is ready.
+//
+// See also |SSL_CTX_set_ticket_aead_method|.
+#define SSL_ERROR_PENDING_TICKET 14
+
+// SSL_ERROR_EARLY_DATA_REJECTED indicates that early data was rejected. The
+// caller should treat this as a connection failure and retry any operations
+// associated with the rejected early data. |SSL_reset_early_data_reject| may be
+// used to reuse the underlying connection for the retry.
+#define SSL_ERROR_EARLY_DATA_REJECTED 15
+
+// SSL_ERROR_WANT_CERTIFICATE_VERIFY indicates the operation failed because
+// certificate verification was incomplete. The caller may retry the operation
+// when certificate verification is complete.
+//
+// See also |SSL_CTX_set_custom_verify|.
+#define SSL_ERROR_WANT_CERTIFICATE_VERIFY 16
+
+#define SSL_ERROR_HANDOFF 17
+#define SSL_ERROR_HANDBACK 18
+
+// SSL_ERROR_WANT_RENEGOTIATE indicates the operation is pending a response to
+// a renegotiation request from the server. The caller may call
+// |SSL_renegotiate| to schedule a renegotiation and retry the operation.
+//
+// See also |ssl_renegotiate_explicit|.
+#define SSL_ERROR_WANT_RENEGOTIATE 19
+
+// SSL_error_description returns a string representation of |err|, where |err|
+// is one of the |SSL_ERROR_*| constants returned by |SSL_get_error|, or NULL
+// if the value is unrecognized.
+OPENSSL_EXPORT const char *SSL_error_description(int err);
+
+// SSL_set_mtu sets the |ssl|'s MTU in DTLS to |mtu|. It returns one on success
+// and zero on failure.
+OPENSSL_EXPORT int SSL_set_mtu(SSL *ssl, unsigned mtu);
+
+// DTLSv1_set_initial_timeout_duration sets the initial duration for a DTLS
+// handshake timeout.
+//
+// This duration overrides the default of 1 second, which is the strong
+// recommendation of RFC 6347 (see section 4.2.4.1). However, there may exist
+// situations where a shorter timeout would be beneficial, such as for
+// time-sensitive applications.
+OPENSSL_EXPORT void DTLSv1_set_initial_timeout_duration(SSL *ssl,
+                                                        unsigned duration_ms);
+
+// DTLSv1_get_timeout queries the next DTLS handshake timeout. If there is a
+// timeout in progress, it sets |*out| to the time remaining and returns one.
+// Otherwise, it returns zero.
+//
+// When the timeout expires, call |DTLSv1_handle_timeout| to handle the
+// retransmit behavior.
+//
+// NOTE: This function must be queried again whenever the handshake state
+// machine changes, including when |DTLSv1_handle_timeout| is called.
+OPENSSL_EXPORT int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out);
+
+// DTLSv1_handle_timeout is called when a DTLS handshake timeout expires. If no
+// timeout had expired, it returns 0. Otherwise, it retransmits the previous
+// flight of handshake messages and returns 1. If too many timeouts had expired
+// without progress or an error occurs, it returns -1.
+//
+// The caller's external timer should be compatible with the one |ssl| queries
+// within some fudge factor. Otherwise, the call will be a no-op, but
+// |DTLSv1_get_timeout| will return an updated timeout.
+//
+// If the function returns -1, checking if |SSL_get_error| returns
+// |SSL_ERROR_WANT_WRITE| may be used to determine if the retransmit failed due
+// to a non-fatal error at the write |BIO|. However, the operation may not be
+// retried until the next timeout fires.
+//
+// WARNING: This function breaks the usual return value convention.
+//
+// TODO(davidben): This |SSL_ERROR_WANT_WRITE| behavior is kind of bizarre.
+OPENSSL_EXPORT int DTLSv1_handle_timeout(SSL *ssl);
+
+
+// Protocol versions.
+
+#define DTLS1_VERSION_MAJOR 0xfe
+#define SSL3_VERSION_MAJOR 0x03
+
+#define SSL3_VERSION 0x0300
+#define TLS1_VERSION 0x0301
+#define TLS1_1_VERSION 0x0302
+#define TLS1_2_VERSION 0x0303
+#define TLS1_3_VERSION 0x0304
+
+#define DTLS1_VERSION 0xfeff
+#define DTLS1_2_VERSION 0xfefd
+
+// SSL_CTX_set_min_proto_version sets the minimum protocol version for |ctx| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_min_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_set_max_proto_version sets the maximum protocol version for |ctx| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_CTX_set_max_proto_version(SSL_CTX *ctx,
+                                                 uint16_t version);
+
+// SSL_CTX_get_min_proto_version returns the minimum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_min_proto_version(const SSL_CTX *ctx);
+
+// SSL_CTX_get_max_proto_version returns the maximum protocol version for |ctx|
+OPENSSL_EXPORT uint16_t SSL_CTX_get_max_proto_version(const SSL_CTX *ctx);
+
+// SSL_set_min_proto_version sets the minimum protocol version for |ssl| to
+// |version|. If |version| is zero, the default minimum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_min_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_set_max_proto_version sets the maximum protocol version for |ssl| to
+// |version|. If |version| is zero, the default maximum version is used. It
+// returns one on success and zero if |version| is invalid.
+OPENSSL_EXPORT int SSL_set_max_proto_version(SSL *ssl, uint16_t version);
+
+// SSL_get_min_proto_version returns the minimum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_min_proto_version(const SSL *ssl);
+
+// SSL_get_max_proto_version returns the maximum protocol version for |ssl|. If
+// the connection's configuration has been shed, 0 is returned.
+OPENSSL_EXPORT uint16_t SSL_get_max_proto_version(const SSL *ssl);
+
+// SSL_version returns the TLS or DTLS protocol version used by |ssl|, which is
+// one of the |*_VERSION| values. (E.g. |TLS1_2_VERSION|.) Before the version
+// is negotiated, the result is undefined.
+OPENSSL_EXPORT int SSL_version(const SSL *ssl);
+
+
+// Options.
+//
+// Options configure protocol behavior.
+
+// SSL_OP_NO_QUERY_MTU, in DTLS, disables querying the MTU from the underlying
+// |BIO|. Instead, the MTU is configured with |SSL_set_mtu|.
+#define SSL_OP_NO_QUERY_MTU 0x00001000L
+
+// SSL_OP_NO_TICKET disables session ticket support (RFC 5077).
+#define SSL_OP_NO_TICKET 0x00004000L
+
+// SSL_OP_CIPHER_SERVER_PREFERENCE configures servers to select ciphers and
+// ECDHE curves according to the server's preferences instead of the
+// client's.
+#define SSL_OP_CIPHER_SERVER_PREFERENCE 0x00400000L
+
+// The following flags toggle individual protocol versions. This is deprecated.
+// Use |SSL_CTX_set_min_proto_version| and |SSL_CTX_set_max_proto_version|
+// instead.
+#define SSL_OP_NO_TLSv1 0x04000000L
+#define SSL_OP_NO_TLSv1_2 0x08000000L
+#define SSL_OP_NO_TLSv1_1 0x10000000L
+#define SSL_OP_NO_TLSv1_3 0x20000000L
+#define SSL_OP_NO_DTLSv1 SSL_OP_NO_TLSv1
+#define SSL_OP_NO_DTLSv1_2 SSL_OP_NO_TLSv1_2
+
+// SSL_CTX_set_options enables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_clear_options disables all options set in |options| (which should be
+// one or more of the |SSL_OP_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options);
+
+// SSL_CTX_get_options returns a bitmask of |SSL_OP_*| values that represent all
+// the options enabled for |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_options(const SSL_CTX *ctx);
+
+// SSL_set_options enables all options set in |options| (which should be one or
+// more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_set_options(SSL *ssl, uint32_t options);
+
+// SSL_clear_options disables all options set in |options| (which should be one
+// or more of the |SSL_OP_*| values, ORed together) in |ssl|. It returns a
+// bitmask representing the resulting enabled options.
+OPENSSL_EXPORT uint32_t SSL_clear_options(SSL *ssl, uint32_t options);
+
+// SSL_get_options returns a bitmask of |SSL_OP_*| values that represent all the
+// options enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_options(const SSL *ssl);
+
+
+// Modes.
+//
+// Modes configure API behavior.
+
+// SSL_MODE_ENABLE_PARTIAL_WRITE, in TLS, allows |SSL_write| to complete with a
+// partial result when the only part of the input was written in a single
+// record. In DTLS, it does nothing.
+#define SSL_MODE_ENABLE_PARTIAL_WRITE 0x00000001L
+
+// SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER, in TLS, allows retrying an incomplete
+// |SSL_write| with a different buffer. However, |SSL_write| still assumes the
+// buffer contents are unchanged. This is not the default to avoid the
+// misconception that non-blocking |SSL_write| behaves like non-blocking
+// |write|. In DTLS, it does nothing.
+#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
+
+// SSL_MODE_NO_AUTO_CHAIN disables automatically building a certificate chain
+// before sending certificates to the peer. This flag is set (and the feature
+// disabled) by default.
+// TODO(davidben): Remove this behavior. https://crbug.com/boringssl/42.
+#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
+
+// SSL_MODE_ENABLE_FALSE_START allows clients to send application data before
+// receipt of ChangeCipherSpec and Finished. This mode enables full handshakes
+// to 'complete' in one RTT. See RFC 7918.
+//
+// When False Start is enabled, |SSL_do_handshake| may succeed before the
+// handshake has completely finished. |SSL_write| will function at this point,
+// and |SSL_read| will transparently wait for the final handshake leg before
+// returning application data. To determine if False Start occurred or when the
+// handshake is completely finished, see |SSL_in_false_start|, |SSL_in_init|,
+// and |SSL_CB_HANDSHAKE_DONE| from |SSL_CTX_set_info_callback|.
+#define SSL_MODE_ENABLE_FALSE_START 0x00000080L
+
+// SSL_MODE_CBC_RECORD_SPLITTING causes multi-byte CBC records in TLS 1.0 to be
+// split in two: the first record will contain a single byte and the second will
+// contain the remainder. This effectively randomises the IV and prevents BEAST
+// attacks.
+#define SSL_MODE_CBC_RECORD_SPLITTING 0x00000100L
+
+// SSL_MODE_NO_SESSION_CREATION will cause any attempts to create a session to
+// fail with SSL_R_SESSION_MAY_NOT_BE_CREATED. This can be used to enforce that
+// session resumption is used for a given SSL*.
+#define SSL_MODE_NO_SESSION_CREATION 0x00000200L
+
+// SSL_MODE_SEND_FALLBACK_SCSV sends TLS_FALLBACK_SCSV in the ClientHello.
+// To be set only by applications that reconnect with a downgraded protocol
+// version; see RFC 7507 for details.
+//
+// DO NOT ENABLE THIS if your application attempts a normal handshake. Only use
+// this in explicit fallback retries, following the guidance in RFC 7507.
+#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000400L
+
+// SSL_CTX_set_mode enables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_clear_mode disables all modes set in |mode| (which should be one or
+// more of the |SSL_MODE_*| values, ORed together) in |ctx|. It returns a
+// bitmask representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode);
+
+// SSL_CTX_get_mode returns a bitmask of |SSL_MODE_*| values that represent all
+// the modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx);
+
+// SSL_set_mode enables all modes set in |mode| (which should be one or more of
+// the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_set_mode(SSL *ssl, uint32_t mode);
+
+// SSL_clear_mode disables all modes set in |mode| (which should be one or more
+// of the |SSL_MODE_*| values, ORed together) in |ssl|. It returns a bitmask
+// representing the resulting enabled modes.
+OPENSSL_EXPORT uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode);
+
+// SSL_get_mode returns a bitmask of |SSL_MODE_*| values that represent all the
+// modes enabled for |ssl|.
+OPENSSL_EXPORT uint32_t SSL_get_mode(const SSL *ssl);
+
+// SSL_CTX_set0_buffer_pool sets a |CRYPTO_BUFFER_POOL| that will be used to
+// store certificates. This can allow multiple connections to share
+// certificates and thus save memory.
+//
+// The SSL_CTX does not take ownership of |pool| and the caller must ensure
+// that |pool| outlives |ctx| and all objects linked to it, including |SSL|,
+// |X509| and |SSL_SESSION| objects. Basically, don't ever free |pool|.
+OPENSSL_EXPORT void SSL_CTX_set0_buffer_pool(SSL_CTX *ctx,
+                                             CRYPTO_BUFFER_POOL *pool);
+
+
+// Configuring certificates and private keys.
+//
+// These functions configure the connection's leaf certificate, private key, and
+// certificate chain. The certificate chain is ordered leaf to root (as sent on
+// the wire) but does not include the leaf. Both client and server certificates
+// use these functions.
+//
+// Certificates and keys may be configured before the handshake or dynamically
+// in the early callback and certificate callback.
+
+// SSL_CTX_use_certificate sets |ctx|'s leaf certificate to |x509|. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x509);
+
+// SSL_use_certificate sets |ssl|'s leaf certificate to |x509|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_use_certificate(SSL *ssl, X509 *x509);
+
+// SSL_CTX_use_PrivateKey sets |ctx|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
+
+// SSL_use_PrivateKey sets |ssl|'s private key to |pkey|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
+
+// SSL_CTX_set0_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_CTX_set1_chain sets |ctx|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain);
+
+// SSL_set0_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. On success, it returns one and takes ownership of |chain|.
+// Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_set1_chain sets |ssl|'s certificate chain, excluding the leaf, to
+// |chain|. It returns one on success and zero on failure. The caller retains
+// ownership of |chain| and may release it freely.
+OPENSSL_EXPORT int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain);
+
+// SSL_CTX_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On
+// success, it returns one and takes ownership of |x509|. Otherwise, it returns
+// zero.
+OPENSSL_EXPORT int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_CTX_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It
+// returns one on success and zero on failure. The caller retains ownership of
+// |x509| and may release it freely.
+OPENSSL_EXPORT int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add0_chain_cert appends |x509| to |ctx|'s certificate chain. On success,
+// it returns one and takes ownership of |x509|. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_add0_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_extra_chain_cert calls |SSL_CTX_add0_chain_cert|.
+OPENSSL_EXPORT int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509);
+
+// SSL_add1_chain_cert appends |x509| to |ctx|'s certificate chain. It returns
+// one on success and zero on failure. The caller retains ownership of |x509|
+// and may release it freely.
+OPENSSL_EXPORT int SSL_add1_chain_cert(SSL *ssl, X509 *x509);
+
+// SSL_CTX_clear_chain_certs clears |ctx|'s certificate chain and returns
+// one.
+OPENSSL_EXPORT int SSL_CTX_clear_chain_certs(SSL_CTX *ctx);
+
+// SSL_CTX_clear_extra_chain_certs calls |SSL_CTX_clear_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx);
+
+// SSL_clear_chain_certs clears |ssl|'s certificate chain and returns one.
+OPENSSL_EXPORT int SSL_clear_chain_certs(SSL *ssl);
+
+// SSL_CTX_set_cert_cb sets a callback that is called to select a certificate.
+// The callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_CTX_set_cert_cb(SSL_CTX *ctx,
+                                        int (*cb)(SSL *ssl, void *arg),
+                                        void *arg);
+
+// SSL_set_cert_cb sets a callback that is called to select a certificate. The
+// callback returns one on success, zero on internal error, and a negative
+// number on failure or to pause the handshake. If the handshake is paused,
+// |SSL_get_error| will return |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// On the client, the callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate
+// request.
+//
+// On the server, the callback will be called after extensions have been
+// processed, but before the resumption decision has been made. This differs
+// from OpenSSL which handles resumption before selecting the certificate.
+OPENSSL_EXPORT void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg),
+                                    void *arg);
+
+// SSL_get0_certificate_types, for a client, sets |*out_types| to an array
+// containing the client certificate types requested by a server. It returns the
+// length of the array. Note this list is always empty in TLS 1.3. The server
+// will instead send signature algorithms. See
+// |SSL_get0_peer_verify_algorithms|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t SSL_get0_certificate_types(const SSL *ssl,
+                                                 const uint8_t **out_types);
+
+// SSL_get0_peer_verify_algorithms sets |*out_sigalgs| to an array containing
+// the signature algorithms the peer is able to verify. It returns the length of
+// the array. Note these values are only sent starting TLS 1.2 and only
+// mandatory starting TLS 1.3. If not sent, the empty array is returned. For the
+// historical client certificate types list, see |SSL_get0_certificate_types|.
+//
+// The behavior of this function is undefined except during the callbacks set by
+// by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or when the
+// handshake is paused because of them.
+OPENSSL_EXPORT size_t
+SSL_get0_peer_verify_algorithms(const SSL *ssl, const uint16_t **out_sigalgs);
+
+// SSL_certs_clear resets the private key, leaf certificate, and certificate
+// chain of |ssl|.
+OPENSSL_EXPORT void SSL_certs_clear(SSL *ssl);
+
+// SSL_CTX_check_private_key returns one if the certificate and private key
+// configured in |ctx| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_check_private_key(const SSL_CTX *ctx);
+
+// SSL_check_private_key returns one if the certificate and private key
+// configured in |ssl| are consistent and zero otherwise.
+OPENSSL_EXPORT int SSL_check_private_key(const SSL *ssl);
+
+// SSL_CTX_get0_certificate returns |ctx|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx);
+
+// SSL_get_certificate returns |ssl|'s leaf certificate.
+OPENSSL_EXPORT X509 *SSL_get_certificate(const SSL *ssl);
+
+// SSL_CTX_get0_privatekey returns |ctx|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx);
+
+// SSL_get_privatekey returns |ssl|'s private key.
+OPENSSL_EXPORT EVP_PKEY *SSL_get_privatekey(const SSL *ssl);
+
+// SSL_CTX_get0_chain_certs sets |*out_chain| to |ctx|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx,
+                                            STACK_OF(X509) **out_chain);
+
+// SSL_CTX_get_extra_chain_certs calls |SSL_CTX_get0_chain_certs|.
+OPENSSL_EXPORT int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
+                                                 STACK_OF(X509) **out_chain);
+
+// SSL_get0_chain_certs sets |*out_chain| to |ssl|'s certificate chain and
+// returns one.
+OPENSSL_EXPORT int SSL_get0_chain_certs(const SSL *ssl,
+                                        STACK_OF(X509) **out_chain);
+
+// SSL_CTX_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request it. The |list| argument must
+// contain one or more SCT structures serialised as a SignedCertificateTimestamp
+// List (see https://tools.ietf.org/html/rfc6962#section-3.3) – i.e. each SCT
+// is prefixed by a big-endian, uint16 length and the concatenation of one or
+// more such prefixed SCTs are themselves also prefixed by a uint16 length. It
+// returns one on success and zero on error. The caller retains ownership of
+// |list|.
+OPENSSL_EXPORT int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx,
+                                                          const uint8_t *list,
+                                                          size_t list_len);
+
+// SSL_set_signed_cert_timestamp_list sets the list of signed certificate
+// timestamps that is sent to clients that request is. The same format as the
+// one used for |SSL_CTX_set_signed_cert_timestamp_list| applies. The caller
+// retains ownership of |list|.
+OPENSSL_EXPORT int SSL_set_signed_cert_timestamp_list(SSL *ctx,
+                                                      const uint8_t *list,
+                                                      size_t list_len);
+
+// SSL_CTX_set_ocsp_response sets the OCSP response that is sent to clients
+// which request it. It returns one on success and zero on error. The caller
+// retains ownership of |response|.
+OPENSSL_EXPORT int SSL_CTX_set_ocsp_response(SSL_CTX *ctx,
+                                             const uint8_t *response,
+                                             size_t response_len);
+
+// SSL_set_ocsp_response sets the OCSP response that is sent to clients which
+// request it. It returns one on success and zero on error. The caller retains
+// ownership of |response|.
+OPENSSL_EXPORT int SSL_set_ocsp_response(SSL *ssl,
+                                         const uint8_t *response,
+                                         size_t response_len);
+
+// SSL_SIGN_* are signature algorithm values as defined in TLS 1.3.
+#define SSL_SIGN_RSA_PKCS1_SHA1 0x0201
+#define SSL_SIGN_RSA_PKCS1_SHA256 0x0401
+#define SSL_SIGN_RSA_PKCS1_SHA384 0x0501
+#define SSL_SIGN_RSA_PKCS1_SHA512 0x0601
+#define SSL_SIGN_ECDSA_SHA1 0x0203
+#define SSL_SIGN_ECDSA_SECP256R1_SHA256 0x0403
+#define SSL_SIGN_ECDSA_SECP384R1_SHA384 0x0503
+#define SSL_SIGN_ECDSA_SECP521R1_SHA512 0x0603
+#define SSL_SIGN_RSA_PSS_RSAE_SHA256 0x0804
+#define SSL_SIGN_RSA_PSS_RSAE_SHA384 0x0805
+#define SSL_SIGN_RSA_PSS_RSAE_SHA512 0x0806
+#define SSL_SIGN_ED25519 0x0807
+
+// SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal signature algorithm used to
+// specify raw RSASSA-PKCS1-v1_5 with an MD5/SHA-1 concatenation, as used in TLS
+// before TLS 1.2.
+#define SSL_SIGN_RSA_PKCS1_MD5_SHA1 0xff01
+
+// SSL_get_signature_algorithm_name returns a human-readable name for |sigalg|,
+// or NULL if unknown. If |include_curve| is one, the curve for ECDSA algorithms
+// is included as in TLS 1.3. Otherwise, it is excluded as in TLS 1.2.
+OPENSSL_EXPORT const char *SSL_get_signature_algorithm_name(uint16_t sigalg,
+                                                            int include_curve);
+
+// SSL_get_signature_algorithm_key_type returns the key type associated with
+// |sigalg| as an |EVP_PKEY_*| constant or |EVP_PKEY_NONE| if unknown.
+OPENSSL_EXPORT int SSL_get_signature_algorithm_key_type(uint16_t sigalg);
+
+// SSL_get_signature_algorithm_digest returns the digest function associated
+// with |sigalg| or |NULL| if |sigalg| has no prehash (Ed25519) or is unknown.
+OPENSSL_EXPORT const EVP_MD *SSL_get_signature_algorithm_digest(
+    uint16_t sigalg);
+
+// SSL_is_signature_algorithm_rsa_pss returns one if |sigalg| is an RSA-PSS
+// signature algorithm and zero otherwise.
+OPENSSL_EXPORT int SSL_is_signature_algorithm_rsa_pss(uint16_t sigalg);
+
+// SSL_CTX_set_signing_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when signing with |ctx|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_signing_algorithm_prefs(SSL_CTX *ctx,
+                                                       const uint16_t *prefs,
+                                                       size_t num_prefs);
+
+// SSL_set_signing_algorithm_prefs configures |ssl| to use |prefs| as the
+// preference list when signing with |ssl|'s private key. It returns one on
+// success and zero on error. |prefs| should not include the internal-only value
+// |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_set_signing_algorithm_prefs(SSL *ssl,
+                                                   const uint16_t *prefs,
+                                                   size_t num_prefs);
+
+
+// Certificate and private key convenience functions.
+
+// SSL_CTX_set_chain_and_key sets the certificate chain and private key for a
+// TLS client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_chain_and_key(
+    SSL_CTX *ctx, CRYPTO_BUFFER *const *certs, size_t num_certs,
+    EVP_PKEY *privkey, const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_set_chain_and_key sets the certificate chain and private key for a TLS
+// client or server. References to the given |CRYPTO_BUFFER| and |EVP_PKEY|
+// objects are added as needed. Exactly one of |privkey| or |privkey_method|
+// may be non-NULL. Returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_chain_and_key(
+    SSL *ssl, CRYPTO_BUFFER *const *certs, size_t num_certs, EVP_PKEY *privkey,
+    const SSL_PRIVATE_KEY_METHOD *privkey_method);
+
+// SSL_CTX_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one
+// on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
+
+// SSL_use_RSAPrivateKey sets |ctx|'s private key to |rsa|. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
+
+// The following functions configure certificates or private keys but take as
+// input DER-encoded structures. They return one on success and zero on
+// failure.
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, size_t der_len,
+                                                const uint8_t *der);
+OPENSSL_EXPORT int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *der,
+                                            size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_ASN1(int pk, SSL_CTX *ctx,
+                                               const uint8_t *der,
+                                               size_t der_len);
+OPENSSL_EXPORT int SSL_use_PrivateKey_ASN1(int type, SSL *ssl,
+                                           const uint8_t *der, size_t der_len);
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx,
+                                                  const uint8_t *der,
+                                                  size_t der_len);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der,
+                                              size_t der_len);
+
+// The following functions configure certificates or private keys but take as
+// input files to read from. They return one on success and zero on failure. The
+// |type| parameter is one of the |SSL_FILETYPE_*| values and determines whether
+// the file's contents are read as PEM or DER.
+
+#define SSL_FILETYPE_PEM 1
+#define SSL_FILETYPE_ASN1 2
+
+OPENSSL_EXPORT int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx,
+                                                  const char *file,
+                                                  int type);
+OPENSSL_EXPORT int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file,
+                                              int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file,
+                                                int type);
+OPENSSL_EXPORT int SSL_use_certificate_file(SSL *ssl, const char *file,
+                                            int type);
+
+OPENSSL_EXPORT int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file,
+                                               int type);
+OPENSSL_EXPORT int SSL_use_PrivateKey_file(SSL *ssl, const char *file,
+                                           int type);
+
+// SSL_CTX_use_certificate_chain_file configures certificates for |ctx|. It
+// reads the contents of |file| as a PEM-encoded leaf certificate followed
+// optionally by the certificate chain to send to the peer. It returns one on
+// success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx,
+                                                      const char *file);
+
+// SSL_CTX_set_default_passwd_cb sets the password callback for PEM-based
+// convenience functions called on |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx,
+                                                  pem_password_cb *cb);
+
+// SSL_CTX_get_default_passwd_cb returns the callback set by
+// |SSL_CTX_set_default_passwd_cb|.
+OPENSSL_EXPORT pem_password_cb *SSL_CTX_get_default_passwd_cb(
+    const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_passwd_cb_userdata sets the userdata parameter for
+// |ctx|'s password callback.
+OPENSSL_EXPORT void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,
+                                                           void *data);
+
+// SSL_CTX_get_default_passwd_cb_userdata returns the userdata parameter set by
+// |SSL_CTX_set_default_passwd_cb_userdata|.
+OPENSSL_EXPORT void *SSL_CTX_get_default_passwd_cb_userdata(const SSL_CTX *ctx);
+
+
+// Custom private keys.
+
+enum ssl_private_key_result_t BORINGSSL_ENUM_INT {
+  ssl_private_key_success,
+  ssl_private_key_retry,
+  ssl_private_key_failure,
+};
+
+// ssl_private_key_method_st (aka |SSL_PRIVATE_KEY_METHOD|) describes private
+// key hooks. This is used to off-load signing operations to a custom,
+// potentially asynchronous, backend. Metadata about the key such as the type
+// and size are parsed out of the certificate.
+struct ssl_private_key_method_st {
+  // sign signs the message |in| in using the specified signature algorithm. On
+  // success, it returns |ssl_private_key_success| and writes at most |max_out|
+  // bytes of signature data to |out| and sets |*out_len| to the number of bytes
+  // written. On failure, it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. |sign| should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed. This will result in a call to |complete|.
+  //
+  // |signature_algorithm| is one of the |SSL_SIGN_*| values, as defined in TLS
+  // 1.3. Note that, in TLS 1.2, ECDSA algorithms do not require that curve
+  // sizes match hash sizes, so the curve portion of |SSL_SIGN_ECDSA_*| values
+  // must be ignored. BoringSSL will internally handle the curve matching logic
+  // where appropriate.
+  //
+  // It is an error to call |sign| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*sign)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out,
+                                        uint16_t signature_algorithm,
+                                        const uint8_t *in, size_t in_len);
+
+  // decrypt decrypts |in_len| bytes of encrypted data from |in|. On success it
+  // returns |ssl_private_key_success|, writes at most |max_out| bytes of
+  // decrypted data to |out| and sets |*out_len| to the actual number of bytes
+  // written. On failure it returns |ssl_private_key_failure|. If the operation
+  // has not completed, it returns |ssl_private_key_retry|. The caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in a call to |complete|. This
+  // function only works with RSA keys and should perform a raw RSA decryption
+  // operation with no padding.
+  //
+  // It is an error to call |decrypt| while another private key operation is in
+  // progress on |ssl|.
+  enum ssl_private_key_result_t (*decrypt)(SSL *ssl, uint8_t *out,
+                                           size_t *out_len, size_t max_out,
+                                           const uint8_t *in, size_t in_len);
+
+  // complete completes a pending operation. If the operation has completed, it
+  // returns |ssl_private_key_success| and writes the result to |out| as in
+  // |sign|. Otherwise, it returns |ssl_private_key_failure| on failure and
+  // |ssl_private_key_retry| if the operation is still in progress.
+  //
+  // |complete| may be called arbitrarily many times before completion, but it
+  // is an error to call |complete| if there is no pending operation in progress
+  // on |ssl|.
+  enum ssl_private_key_result_t (*complete)(SSL *ssl, uint8_t *out,
+                                            size_t *out_len, size_t max_out);
+};
+
+// SSL_set_private_key_method configures a custom private key on |ssl|.
+// |key_method| must remain valid for the lifetime of |ssl|.
+OPENSSL_EXPORT void SSL_set_private_key_method(
+    SSL *ssl, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_CTX_set_private_key_method configures a custom private key on |ctx|.
+// |key_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_private_key_method(
+    SSL_CTX *ctx, const SSL_PRIVATE_KEY_METHOD *key_method);
+
+
+// Cipher suites.
+//
+// |SSL_CIPHER| objects represent cipher suites.
+
+DEFINE_CONST_STACK_OF(SSL_CIPHER)
+
+// SSL_get_cipher_by_value returns the structure representing a TLS cipher
+// suite based on its assigned number, or NULL if unknown. See
+// https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-4.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value);
+
+// SSL_CIPHER_get_id returns |cipher|'s non-IANA id. This is not its
+// IANA-assigned number, which is called the "value" here, although it may be
+// cast to a |uint16_t| to get it.
+OPENSSL_EXPORT uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_value returns |cipher|'s IANA-assigned number.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_value(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_aead returns one if |cipher| uses an AEAD cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_aead(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_is_block_cipher returns one if |cipher| is a block cipher.
+OPENSSL_EXPORT int SSL_CIPHER_is_block_cipher(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_cipher_nid returns the NID for |cipher|'s bulk
+// cipher. Possible values are |NID_aes_128_gcm|, |NID_aes_256_gcm|,
+// |NID_chacha20_poly1305|, |NID_aes_128_cbc|, |NID_aes_256_cbc|, and
+// |NID_des_ede3_cbc|.
+OPENSSL_EXPORT int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_digest_nid returns the NID for |cipher|'s HMAC if it is a
+// legacy cipher suite. For modern AEAD-based ciphers (see
+// |SSL_CIPHER_is_aead|), it returns |NID_undef|.
+//
+// Note this function only returns the legacy HMAC digest, not the PRF hash.
+OPENSSL_EXPORT int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_nid returns the NID for |cipher|'s key exchange. This may
+// be |NID_kx_rsa|, |NID_kx_ecdhe|, or |NID_kx_psk| for TLS 1.2. In TLS 1.3,
+// cipher suites do not specify the key exchange, so this function returns
+// |NID_kx_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_auth_nid returns the NID for |cipher|'s authentication
+// type. This may be |NID_auth_rsa|, |NID_auth_ecdsa|, or |NID_auth_psk| for TLS
+// 1.2. In TLS 1.3, cipher suites do not specify authentication, so this
+// function returns |NID_auth_any|.
+OPENSSL_EXPORT int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_prf_nid retuns the NID for |cipher|'s PRF hash. If |cipher| is
+// a pre-TLS-1.2 cipher, it returns |NID_md5_sha1| but note these ciphers use
+// SHA-256 in TLS 1.2. Other return values may be treated uniformly in all
+// applicable versions.
+OPENSSL_EXPORT int SSL_CIPHER_get_prf_nid(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_min_version returns the minimum protocol version required
+// for |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_min_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_max_version returns the maximum protocol version that
+// supports |cipher|.
+OPENSSL_EXPORT uint16_t SSL_CIPHER_get_max_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_standard_name returns the standard IETF name for |cipher|. For
+// example, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256".
+OPENSSL_EXPORT const char *SSL_CIPHER_standard_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_name returns the OpenSSL name of |cipher|. For example,
+// "ECDHE-RSA-AES128-GCM-SHA256". Callers are recommended to use
+// |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_kx_name returns a string that describes the key-exchange
+// method used by |cipher|. For example, "ECDHE_ECDSA". TLS 1.3 AEAD-only
+// ciphers return the string "GENERIC".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_kx_name(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_bits returns the strength, in bits, of |cipher|. If
+// |out_alg_bits| is not NULL, it writes the number of bits consumed by the
+// symmetric algorithm to |*out_alg_bits|.
+OPENSSL_EXPORT int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher,
+                                       int *out_alg_bits);
+
+
+// Cipher suite configuration.
+//
+// OpenSSL uses a mini-language to configure cipher suites. The language
+// maintains an ordered list of enabled ciphers, along with an ordered list of
+// disabled but available ciphers. Initially, all ciphers are disabled with a
+// default ordering. The cipher string is then interpreted as a sequence of
+// directives, separated by colons, each of which modifies this state.
+//
+// Most directives consist of a one character or empty opcode followed by a
+// selector which matches a subset of available ciphers.
+//
+// Available opcodes are:
+//
+//   The empty opcode enables and appends all matching disabled ciphers to the
+//   end of the enabled list. The newly appended ciphers are ordered relative to
+//   each other matching their order in the disabled list.
+//
+//   |-| disables all matching enabled ciphers and prepends them to the disabled
+//   list, with relative order from the enabled list preserved. This means the
+//   most recently disabled ciphers get highest preference relative to other
+//   disabled ciphers if re-enabled.
+//
+//   |+| moves all matching enabled ciphers to the end of the enabled list, with
+//   relative order preserved.
+//
+//   |!| deletes all matching ciphers, enabled or not, from either list. Deleted
+//   ciphers will not matched by future operations.
+//
+// A selector may be a specific cipher (using either the standard or OpenSSL
+// name for the cipher) or one or more rules separated by |+|. The final
+// selector matches the intersection of each rule. For instance, |AESGCM+aECDSA|
+// matches ECDSA-authenticated AES-GCM ciphers.
+//
+// Available cipher rules are:
+//
+//   |ALL| matches all ciphers.
+//
+//   |kRSA|, |kDHE|, |kECDHE|, and |kPSK| match ciphers using plain RSA, DHE,
+//   ECDHE, and plain PSK key exchanges, respectively. Note that ECDHE_PSK is
+//   matched by |kECDHE| and not |kPSK|.
+//
+//   |aRSA|, |aECDSA|, and |aPSK| match ciphers authenticated by RSA, ECDSA, and
+//   a pre-shared key, respectively.
+//
+//   |RSA|, |DHE|, |ECDHE|, |PSK|, |ECDSA|, and |PSK| are aliases for the
+//   corresponding |k*| or |a*| cipher rule. |RSA| is an alias for |kRSA|, not
+//   |aRSA|.
+//
+//   |3DES|, |AES128|, |AES256|, |AES|, |AESGCM|, |CHACHA20| match ciphers
+//   whose bulk cipher use the corresponding encryption scheme. Note that
+//   |AES|, |AES128|, and |AES256| match both CBC and GCM ciphers.
+//
+//   |SHA1|, and its alias |SHA|, match legacy cipher suites using HMAC-SHA1.
+//
+// Although implemented, authentication-only ciphers match no rules and must be
+// explicitly selected by name.
+//
+// Deprecated cipher rules:
+//
+//   |kEDH|, |EDH|, |kEECDH|, and |EECDH| are legacy aliases for |kDHE|, |DHE|,
+//   |kECDHE|, and |ECDHE|, respectively.
+//
+//   |HIGH| is an alias for |ALL|.
+//
+//   |FIPS| is an alias for |HIGH|.
+//
+//   |SSLv3| and |TLSv1| match ciphers available in TLS 1.1 or earlier.
+//   |TLSv1_2| matches ciphers new in TLS 1.2. This is confusing and should not
+//   be used.
+//
+// Unknown rules are silently ignored by legacy APIs, and rejected by APIs with
+// "strict" in the name, which should be preferred. Cipher lists can be long
+// and it's easy to commit typos. Strict functions will also reject the use of
+// spaces, semi-colons and commas as alternative separators.
+//
+// The special |@STRENGTH| directive will sort all enabled ciphers by strength.
+//
+// The |DEFAULT| directive, when appearing at the front of the string, expands
+// to the default ordering of available ciphers.
+//
+// If configuring a server, one may also configure equal-preference groups to
+// partially respect the client's preferences when
+// |SSL_OP_CIPHER_SERVER_PREFERENCE| is enabled. Ciphers in an equal-preference
+// group have equal priority and use the client order. This may be used to
+// enforce that AEADs are preferred but select AES-GCM vs. ChaCha20-Poly1305
+// based on client preferences. An equal-preference is specified with square
+// brackets, combining multiple selectors separated by |. For example:
+//
+//   [TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256|TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256]
+//
+// Once an equal-preference group is used, future directives must be
+// opcode-less. Inside an equal-preference group, spaces are not allowed.
+//
+// TLS 1.3 ciphers do not participate in this mechanism and instead have a
+// built-in preference order. Functions to set cipher lists do not affect TLS
+// 1.3, and functions to query the cipher list do not include TLS 1.3
+// ciphers.
+
+// SSL_DEFAULT_CIPHER_LIST is the default cipher suite configuration. It is
+// substituted when a cipher string starts with 'DEFAULT'.
+#define SSL_DEFAULT_CIPHER_LIST "ALL"
+
+// SSL_CTX_set_strict_cipher_list configures the cipher list for |ctx|,
+// evaluating |str| as a cipher string and returning error if |str| contains
+// anything meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_strict_cipher_list(SSL_CTX *ctx,
+                                                  const char *str);
+
+// SSL_CTX_set_cipher_list configures the cipher list for |ctx|, evaluating
+// |str| as a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_CTX_set_strict_cipher_list|. This function tolerates
+// garbage inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set_strict_cipher_list configures the cipher list for |ssl|, evaluating
+// |str| as a cipher string and returning error if |str| contains anything
+// meaningless. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_set_strict_cipher_list(SSL *ssl, const char *str);
+
+// SSL_set_cipher_list configures the cipher list for |ssl|, evaluating |str| as
+// a cipher string. It returns one on success and zero on failure.
+//
+// Prefer to use |SSL_set_strict_cipher_list|. This function tolerates garbage
+// inputs, unless an empty cipher list results.
+OPENSSL_EXPORT int SSL_set_cipher_list(SSL *ssl, const char *str);
+
+// SSL_CTX_get_ciphers returns the cipher list for |ctx|, in order of
+// preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx);
+
+// SSL_CTX_cipher_in_group returns one if the |i|th cipher (see
+// |SSL_CTX_get_ciphers|) is in the same equipreference group as the one
+// following it and zero otherwise.
+OPENSSL_EXPORT int SSL_CTX_cipher_in_group(const SSL_CTX *ctx, size_t i);
+
+// SSL_get_ciphers returns the cipher list for |ssl|, in order of preference.
+OPENSSL_EXPORT STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl);
+
+
+// Connection information.
+
+// SSL_is_init_finished returns one if |ssl| has completed its initial handshake
+// and has no pending handshake. It returns zero otherwise.
+OPENSSL_EXPORT int SSL_is_init_finished(const SSL *ssl);
+
+// SSL_in_init returns one if |ssl| has a pending handshake and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_in_init(const SSL *ssl);
+
+// SSL_in_false_start returns one if |ssl| has a pending handshake that is in
+// False Start. |SSL_write| may be called at this point without waiting for the
+// peer, but |SSL_read| will complete the handshake before accepting application
+// data.
+//
+// See also |SSL_MODE_ENABLE_FALSE_START|.
+OPENSSL_EXPORT int SSL_in_false_start(const SSL *ssl);
+
+// SSL_get_peer_certificate returns the peer's leaf certificate or NULL if the
+// peer did not use certificates. The caller must call |X509_free| on the
+// result to release it.
+OPENSSL_EXPORT X509 *SSL_get_peer_certificate(const SSL *ssl);
+
+// SSL_get_peer_cert_chain returns the peer's certificate chain or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// WARNING: This function behaves differently between client and server. If
+// |ssl| is a server, the returned chain does not include the leaf certificate.
+// If a client, it does.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);
+
+// SSL_get_peer_full_cert_chain returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the same as |SSL_get_peer_cert_chain| except that this function
+// always returns the full chain, i.e. the first element of the return value
+// (if any) will be the leaf certificate. In constrast,
+// |SSL_get_peer_cert_chain| returns only the intermediate certificates if the
+// |ssl| is a server.
+OPENSSL_EXPORT STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl);
+
+// SSL_get0_peer_certificates returns the peer's certificate chain, or NULL if
+// unavailable or the peer did not use certificates. This is the unverified list
+// of certificates as sent by the peer, not the final chain built during
+// verification. The caller does not take ownership of the result.
+//
+// This is the |CRYPTO_BUFFER| variant of |SSL_get_peer_full_cert_chain|.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_peer_certificates(const SSL *ssl);
+
+// SSL_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to point to
+// |*out_len| bytes of SCT information from the server. This is only valid if
+// |ssl| is a client. The SCT information is a SignedCertificateTimestampList
+// (including the two leading length bytes).
+// See https://tools.ietf.org/html/rfc6962#section-3.3
+// If no SCT was received then |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_signed_cert_timestamp_list(const SSL *ssl,
+                                                        const uint8_t **out,
+                                                        size_t *out_len);
+
+// SSL_get0_ocsp_response sets |*out| and |*out_len| to point to |*out_len|
+// bytes of an OCSP response from the server. This is the DER encoding of an
+// OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
+                                           size_t *out_len);
+
+// SSL_get_tls_unique writes at most |max_out| bytes of the tls-unique value
+// for |ssl| to |out| and sets |*out_len| to the number of bytes written. It
+// returns one on success or zero on error. In general |max_out| should be at
+// least 12.
+//
+// This function will always fail if the initial handshake has not completed.
+// The tls-unique value will change after a renegotiation but, since
+// renegotiations can be initiated by the server at any point, the higher-level
+// protocol must either leave them disabled or define states in which the
+// tls-unique value can be read.
+//
+// The tls-unique value is defined by
+// https://tools.ietf.org/html/rfc5929#section-3.1. Due to a weakness in the
+// TLS protocol, tls-unique is broken for resumed connections unless the
+// Extended Master Secret extension is negotiated. Thus this function will
+// return zero if |ssl| performed session resumption unless EMS was used when
+// negotiating the original session.
+OPENSSL_EXPORT int SSL_get_tls_unique(const SSL *ssl, uint8_t *out,
+                                      size_t *out_len, size_t max_out);
+
+// SSL_get_extms_support returns one if the Extended Master Secret extension or
+// TLS 1.3 was negotiated. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_extms_support(const SSL *ssl);
+
+// SSL_get_current_cipher returns cipher suite used by |ssl|, or NULL if it has
+// not been negotiated yet.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl);
+
+// SSL_session_reused returns one if |ssl| performed an abbreviated handshake
+// and zero otherwise.
+//
+// TODO(davidben): Hammer down the semantics of this API while a handshake,
+// initial or renego, is in progress.
+OPENSSL_EXPORT int SSL_session_reused(const SSL *ssl);
+
+// SSL_get_secure_renegotiation_support returns one if the peer supports secure
+// renegotiation (RFC 5746) or TLS 1.3. Otherwise, it returns zero.
+OPENSSL_EXPORT int SSL_get_secure_renegotiation_support(const SSL *ssl);
+
+// SSL_export_keying_material exports a value derived from the master secret, as
+// specified in RFC 5705. It writes |out_len| bytes to |out| given a label and
+// optional context. (Since a zero length context is allowed, the |use_context|
+// flag controls whether a context is included.)
+//
+// It returns one on success and zero otherwise.
+OPENSSL_EXPORT int SSL_export_keying_material(
+    SSL *ssl, uint8_t *out, size_t out_len, const char *label, size_t label_len,
+    const uint8_t *context, size_t context_len, int use_context);
+
+
+// Sessions.
+//
+// An |SSL_SESSION| represents an SSL session that may be resumed in an
+// abbreviated handshake. It is reference-counted and immutable. Once
+// established, an |SSL_SESSION| may be shared by multiple |SSL| objects on
+// different threads and must not be modified.
+
+DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)
+
+// SSL_SESSION_new returns a newly-allocated blank |SSL_SESSION| or NULL on
+// error. This may be useful when writing tests but should otherwise not be
+// used.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx);
+
+// SSL_SESSION_up_ref increments the reference count of |session| and returns
+// one.
+OPENSSL_EXPORT int SSL_SESSION_up_ref(SSL_SESSION *session);
+
+// SSL_SESSION_free decrements the reference count of |session|. If it reaches
+// zero, all data referenced by |session| and |session| itself are released.
+OPENSSL_EXPORT void SSL_SESSION_free(SSL_SESSION *session);
+
+// SSL_SESSION_to_bytes serializes |in| into a newly allocated buffer and sets
+// |*out_data| to that buffer and |*out_len| to its length. The caller takes
+// ownership of the buffer and must call |OPENSSL_free| when done. It returns
+// one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes(const SSL_SESSION *in,
+                                        uint8_t **out_data, size_t *out_len);
+
+// SSL_SESSION_to_bytes_for_ticket serializes |in|, but excludes the session
+// identification information, namely the session ID and ticket.
+OPENSSL_EXPORT int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in,
+                                                   uint8_t **out_data,
+                                                   size_t *out_len);
+
+// SSL_SESSION_from_bytes parses |in_len| bytes from |in| as an SSL_SESSION. It
+// returns a newly-allocated |SSL_SESSION| on success or NULL on error.
+OPENSSL_EXPORT SSL_SESSION *SSL_SESSION_from_bytes(
+    const uint8_t *in, size_t in_len, const SSL_CTX *ctx);
+
+// SSL_SESSION_get_version returns a string describing the TLS or DTLS version
+// |session| was established at. For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_SESSION_get_version(const SSL_SESSION *session);
+
+// SSL_SESSION_get_protocol_version returns the TLS or DTLS version |session|
+// was established at.
+OPENSSL_EXPORT uint16_t
+SSL_SESSION_get_protocol_version(const SSL_SESSION *session);
+
+// SSL_SESSION_set_protocol_version sets |session|'s TLS or DTLS version to
+// |version|. This may be useful when writing tests but should otherwise not be
+// used. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_SESSION_set_protocol_version(SSL_SESSION *session,
+                                                    uint16_t version);
+
+// SSL_MAX_SSL_SESSION_ID_LENGTH is the maximum length of an SSL session ID.
+#define SSL_MAX_SSL_SESSION_ID_LENGTH 32
+
+// SSL_SESSION_get_id returns a pointer to a buffer containing |session|'s
+// session ID and sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session,
+                                                 unsigned *out_len);
+
+// SSL_SESSION_set1_id sets |session|'s session ID to |sid|, It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id(SSL_SESSION *session, const uint8_t *sid,
+                                       size_t sid_len);
+
+// SSL_SESSION_get_time returns the time at which |session| was established in
+// seconds since the UNIX epoch.
+OPENSSL_EXPORT uint64_t SSL_SESSION_get_time(const SSL_SESSION *session);
+
+// SSL_SESSION_get_timeout returns the lifetime of |session| in seconds.
+OPENSSL_EXPORT uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer returns the peer leaf certificate stored in
+// |session|.
+//
+// TODO(davidben): This should return a const X509 *.
+OPENSSL_EXPORT X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_certificates returns the peer certificate chain stored
+// in |session|, or NULL if the peer did not use certificates. This is the
+// unverified list of certificates as sent by the peer, not the final chain
+// built during verification. The caller does not take ownership of the result.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_SESSION_get0_peer_certificates(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_signed_cert_timestamp_list sets |*out| and |*out_len| to
+// point to |*out_len| bytes of SCT information stored in |session|. This is
+// only valid for client sessions. The SCT information is a
+// SignedCertificateTimestampList (including the two leading length bytes). See
+// https://tools.ietf.org/html/rfc6962#section-3.3 If no SCT was received then
+// |*out_len| will be zero on return.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_signed_cert_timestamp_list(
+    const SSL_SESSION *session, const uint8_t **out, size_t *out_len);
+
+// SSL_SESSION_get0_ocsp_response sets |*out| and |*out_len| to point to
+// |*out_len| bytes of an OCSP response from the server. This is the DER
+// encoding of an OCSPResponse type as defined in RFC 2560.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ocsp_response(const SSL_SESSION *session,
+                                                   const uint8_t **out,
+                                                   size_t *out_len);
+
+// SSL_MAX_MASTER_KEY_LENGTH is the maximum length of a master secret.
+#define SSL_MAX_MASTER_KEY_LENGTH 48
+
+// SSL_SESSION_get_master_key writes up to |max_out| bytes of |session|'s master
+// secret to |out| and returns the number of bytes written. If |max_out| is
+// zero, it returns the size of the master secret.
+OPENSSL_EXPORT size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
+                                                 uint8_t *out, size_t max_out);
+
+// SSL_SESSION_set_time sets |session|'s creation time to |time| and returns
+// |time|. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint64_t SSL_SESSION_set_time(SSL_SESSION *session,
+                                             uint64_t time);
+
+// SSL_SESSION_set_timeout sets |session|'s timeout to |timeout| and returns
+// one. This function may be useful in writing tests but otherwise should not
+// be used.
+OPENSSL_EXPORT uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session,
+                                                uint32_t timeout);
+
+// SSL_SESSION_get0_id_context returns a pointer to a buffer containing
+// |session|'s session ID context (see |SSL_CTX_set_session_id_context|) and
+// sets |*out_len| to its length.
+OPENSSL_EXPORT const uint8_t *SSL_SESSION_get0_id_context(
+    const SSL_SESSION *session, unsigned *out_len);
+
+// SSL_SESSION_set1_id_context sets |session|'s session ID context (see
+// |SSL_CTX_set_session_id_context|) to |sid_ctx|. It returns one on success and
+// zero on error. This function may be useful in writing tests but otherwise
+// should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set1_id_context(SSL_SESSION *session,
+                                               const uint8_t *sid_ctx,
+                                               size_t sid_ctx_len);
+
+// SSL_SESSION_should_be_single_use returns one if |session| should be
+// single-use (TLS 1.3 and later) and zero otherwise.
+//
+// If this function returns one, clients retain multiple sessions and use each
+// only once. This prevents passive observers from correlating connections with
+// tickets. See RFC 8446, appendix C.4. If it returns zero, |session| cannot be
+// used without leaking a correlator.
+OPENSSL_EXPORT int SSL_SESSION_should_be_single_use(const SSL_SESSION *session);
+
+// SSL_SESSION_is_resumable returns one if |session| is resumable and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_is_resumable(const SSL_SESSION *session);
+
+// SSL_SESSION_has_ticket returns one if |session| has a ticket and zero
+// otherwise.
+OPENSSL_EXPORT int SSL_SESSION_has_ticket(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_ticket sets |*out_ticket| and |*out_len| to |session|'s
+// ticket, or NULL and zero if it does not have one. |out_ticket| may be NULL
+// if only the ticket length is needed.
+OPENSSL_EXPORT void SSL_SESSION_get0_ticket(const SSL_SESSION *session,
+                                            const uint8_t **out_ticket,
+                                            size_t *out_len);
+
+// SSL_SESSION_set_ticket sets |session|'s ticket to |ticket|. It returns one on
+// success and zero on error. This function may be useful in writing tests but
+// otherwise should not be used.
+OPENSSL_EXPORT int SSL_SESSION_set_ticket(SSL_SESSION *session,
+                                          const uint8_t *ticket,
+                                          size_t ticket_len);
+
+// SSL_SESSION_get_ticket_lifetime_hint returns ticket lifetime hint of
+// |session| in seconds or zero if none was set.
+OPENSSL_EXPORT uint32_t
+SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_cipher returns the cipher negotiated by the connection which
+// established |session|.
+//
+// Note that, in TLS 1.3, there is no guarantee that resumptions with |session|
+// will use that cipher. Prefer calling |SSL_get_current_cipher| on the |SSL|
+// instead.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_SESSION_get0_cipher(
+    const SSL_SESSION *session);
+
+// SSL_SESSION_has_peer_sha256 returns one if |session| has a SHA-256 hash of
+// the peer's certificate retained and zero if the peer did not present a
+// certificate or if this was not enabled when |session| was created. See also
+// |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT int SSL_SESSION_has_peer_sha256(const SSL_SESSION *session);
+
+// SSL_SESSION_get0_peer_sha256 sets |*out_ptr| and |*out_len| to the SHA-256
+// hash of the peer certificate retained in |session|, or NULL and zero if it
+// does not have one. See also |SSL_CTX_set_retain_only_sha256_of_client_certs|.
+OPENSSL_EXPORT void SSL_SESSION_get0_peer_sha256(const SSL_SESSION *session,
+                                                 const uint8_t **out_ptr,
+                                                 size_t *out_len);
+
+
+// Session caching.
+//
+// Session caching allows connections to be established more efficiently based
+// on saved parameters from a previous connection, called a session (see
+// |SSL_SESSION|). The client offers a saved session, using an opaque identifier
+// from a previous connection. The server may accept the session, if it has the
+// parameters available. Otherwise, it will decline and continue with a full
+// handshake.
+//
+// This requires both the client and the server to retain session state. A
+// client does so with a stateful session cache. A server may do the same or, if
+// supported by both sides, statelessly using session tickets. For more
+// information on the latter, see the next section.
+//
+// For a server, the library implements a built-in internal session cache as an
+// in-memory hash table. Servers may also use |SSL_CTX_sess_set_get_cb| and
+// |SSL_CTX_sess_set_new_cb| to implement a custom external session cache. In
+// particular, this may be used to share a session cache between multiple
+// servers in a large deployment. An external cache may be used in addition to
+// or instead of the internal one. Use |SSL_CTX_set_session_cache_mode| to
+// toggle the internal cache.
+//
+// For a client, the only option is an external session cache. Clients may use
+// |SSL_CTX_sess_set_new_cb| to register a callback for when new sessions are
+// available. These may be cached and, in subsequent compatible connections,
+// configured with |SSL_set_session|.
+//
+// Note that offering or accepting a session short-circuits certificate
+// verification and most parameter negotiation. Resuming sessions across
+// different contexts may result in security failures and surprising
+// behavior. For a typical client, this means sessions for different hosts must
+// be cached under different keys. A client that connects to the same host with,
+// e.g., different cipher suite settings or client certificates should also use
+// separate session caches between those contexts. Servers should also partition
+// session caches between SNI hosts with |SSL_CTX_set_session_id_context|.
+//
+// Note also, in TLS 1.2 and earlier, offering sessions allows passive observers
+// to correlate different client connections. TLS 1.3 and later fix this,
+// provided clients use sessions at most once. Session caches are managed by the
+// caller in BoringSSL, so this must be implemented externally. See
+// |SSL_SESSION_should_be_single_use| for details.
+
+// SSL_SESS_CACHE_OFF disables all session caching.
+#define SSL_SESS_CACHE_OFF 0x0000
+
+// SSL_SESS_CACHE_CLIENT enables session caching for a client. The internal
+// cache is never used on a client, so this only enables the callbacks.
+#define SSL_SESS_CACHE_CLIENT 0x0001
+
+// SSL_SESS_CACHE_SERVER enables session caching for a server.
+#define SSL_SESS_CACHE_SERVER 0x0002
+
+// SSL_SESS_CACHE_BOTH enables session caching for both client and server.
+#define SSL_SESS_CACHE_BOTH (SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_SERVER)
+
+// SSL_SESS_CACHE_NO_AUTO_CLEAR disables automatically calling
+// |SSL_CTX_flush_sessions| every 255 connections.
+#define SSL_SESS_CACHE_NO_AUTO_CLEAR 0x0080
+
+// SSL_SESS_CACHE_NO_INTERNAL_LOOKUP, on a server, disables looking up a session
+// from the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 0x0100
+
+// SSL_SESS_CACHE_NO_INTERNAL_STORE, on a server, disables storing sessions in
+// the internal session cache.
+#define SSL_SESS_CACHE_NO_INTERNAL_STORE 0x0200
+
+// SSL_SESS_CACHE_NO_INTERNAL, on a server, disables the internal session
+// cache.
+#define SSL_SESS_CACHE_NO_INTERNAL \
+    (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP | SSL_SESS_CACHE_NO_INTERNAL_STORE)
+
+// SSL_CTX_set_session_cache_mode sets the session cache mode bits for |ctx| to
+// |mode|. It returns the previous value.
+OPENSSL_EXPORT int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode);
+
+// SSL_CTX_get_session_cache_mode returns the session cache mode bits for
+// |ctx|
+OPENSSL_EXPORT int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx);
+
+// SSL_set_session, for a client, configures |ssl| to offer to resume |session|
+// in the initial handshake and returns one. The caller retains ownership of
+// |session|. Note that configuring a session assumes the authentication in the
+// session is valid. For callers that wish to revalidate the session before
+// offering, see |SSL_SESSION_get0_peer_certificates|,
+// |SSL_SESSION_get0_signed_cert_timestamp_list|, and
+// |SSL_SESSION_get0_ocsp_response|.
+//
+// It is an error to call this function after the handshake has begun.
+OPENSSL_EXPORT int SSL_set_session(SSL *ssl, SSL_SESSION *session);
+
+// SSL_DEFAULT_SESSION_TIMEOUT is the default lifetime, in seconds, of a
+// session in TLS 1.2 or earlier. This is how long we are willing to use the
+// secret to encrypt traffic without fresh key material.
+#define SSL_DEFAULT_SESSION_TIMEOUT (2 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT is the default lifetime, in seconds, of a
+// session for TLS 1.3 psk_dhe_ke. This is how long we are willing to use the
+// secret as an authenticator.
+#define SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT (2 * 24 * 60 * 60)
+
+// SSL_DEFAULT_SESSION_AUTH_TIMEOUT is the default non-renewable lifetime, in
+// seconds, of a TLS 1.3 session. This is how long we are willing to trust the
+// signature in the initial handshake.
+#define SSL_DEFAULT_SESSION_AUTH_TIMEOUT (7 * 24 * 60 * 60)
+
+// SSL_CTX_set_timeout sets the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout);
+
+// SSL_CTX_set_session_psk_dhe_timeout sets the lifetime, in seconds, of TLS 1.3
+// sessions created in |ctx| to |timeout|.
+OPENSSL_EXPORT void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx,
+                                                        uint32_t timeout);
+
+// SSL_CTX_get_timeout returns the lifetime, in seconds, of TLS 1.2 (or earlier)
+// sessions created in |ctx|.
+OPENSSL_EXPORT uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx);
+
+// SSL_MAX_SID_CTX_LENGTH is the maximum length of a session ID context.
+#define SSL_MAX_SID_CTX_LENGTH 32
+
+// SSL_CTX_set_session_id_context sets |ctx|'s session ID context to |sid_ctx|.
+// It returns one on success and zero on error. The session ID context is an
+// application-defined opaque byte string. A session will not be used in a
+// connection without a matching session ID context.
+//
+// For a server, if |SSL_VERIFY_PEER| is enabled, it is an error to not set a
+// session ID context.
+OPENSSL_EXPORT int SSL_CTX_set_session_id_context(SSL_CTX *ctx,
+                                                  const uint8_t *sid_ctx,
+                                                  size_t sid_ctx_len);
+
+// SSL_set_session_id_context sets |ssl|'s session ID context to |sid_ctx|. It
+// returns one on success and zero on error. See also
+// |SSL_CTX_set_session_id_context|.
+OPENSSL_EXPORT int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
+                                              size_t sid_ctx_len);
+
+// SSL_get0_session_id_context returns a pointer to |ssl|'s session ID context
+// and sets |*out_len| to its length.  It returns NULL on error.
+OPENSSL_EXPORT const uint8_t *SSL_get0_session_id_context(const SSL *ssl,
+                                                          size_t *out_len);
+
+// SSL_SESSION_CACHE_MAX_SIZE_DEFAULT is the default maximum size of a session
+// cache.
+#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT (1024 * 20)
+
+// SSL_CTX_sess_set_cache_size sets the maximum size of |ctx|'s internal session
+// cache to |size|. It returns the previous value.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx,
+                                                         unsigned long size);
+
+// SSL_CTX_sess_get_cache_size returns the maximum size of |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_number returns the number of sessions in |ctx|'s internal
+// session cache.
+OPENSSL_EXPORT size_t SSL_CTX_sess_number(const SSL_CTX *ctx);
+
+// SSL_CTX_add_session inserts |session| into |ctx|'s internal session cache. It
+// returns one on success and zero on error or if |session| is already in the
+// cache. The caller retains its reference to |session|.
+OPENSSL_EXPORT int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_remove_session removes |session| from |ctx|'s internal session cache.
+// It returns one on success and zero if |session| was not in the cache.
+OPENSSL_EXPORT int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_flush_sessions removes all sessions from |ctx| which have expired as
+// of time |time|. If |time| is zero, all sessions are removed.
+OPENSSL_EXPORT void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time);
+
+// SSL_CTX_sess_set_new_cb sets the callback to be called when a new session is
+// established and ready to be cached. If the session cache is disabled (the
+// appropriate one of |SSL_SESS_CACHE_CLIENT| or |SSL_SESS_CACHE_SERVER| is
+// unset), the callback is not called.
+//
+// The callback is passed a reference to |session|. It returns one if it takes
+// ownership (and then calls |SSL_SESSION_free| when done) and zero otherwise. A
+// consumer which places |session| into an in-memory cache will likely return
+// one, with the cache calling |SSL_SESSION_free|. A consumer which serializes
+// |session| with |SSL_SESSION_to_bytes| may not need to retain |session| and
+// will likely return zero. Returning one is equivalent to calling
+// |SSL_SESSION_up_ref| and then returning zero.
+//
+// Note: For a client, the callback may be called on abbreviated handshakes if a
+// ticket is renewed. Further, it may not be called until some time after
+// |SSL_do_handshake| or |SSL_connect| completes if False Start is enabled. Thus
+// it's recommended to use this callback over calling |SSL_get_session| on
+// handshake completion.
+OPENSSL_EXPORT void SSL_CTX_sess_set_new_cb(
+    SSL_CTX *ctx, int (*new_session_cb)(SSL *ssl, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_new_cb returns the callback set by
+// |SSL_CTX_sess_set_new_cb|.
+OPENSSL_EXPORT int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(
+    SSL *ssl, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_remove_cb sets a callback which is called when a session is
+// removed from the internal session cache.
+//
+// TODO(davidben): What is the point of this callback? It seems useless since it
+// only fires on sessions in the internal cache.
+OPENSSL_EXPORT void SSL_CTX_sess_set_remove_cb(
+    SSL_CTX *ctx,
+    void (*remove_session_cb)(SSL_CTX *ctx, SSL_SESSION *session));
+
+// SSL_CTX_sess_get_remove_cb returns the callback set by
+// |SSL_CTX_sess_set_remove_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(
+    SSL_CTX *ctx, SSL_SESSION *session);
+
+// SSL_CTX_sess_set_get_cb sets a callback to look up a session by ID for a
+// server. The callback is passed the session ID and should return a matching
+// |SSL_SESSION| or NULL if not found. It should set |*out_copy| to zero and
+// return a new reference to the session. This callback is not used for a
+// client.
+//
+// For historical reasons, if |*out_copy| is set to one (default), the SSL
+// library will take a new reference to the returned |SSL_SESSION|, expecting
+// the callback to return a non-owning pointer. This is not recommended. If
+// |ctx| and thus the callback is used on multiple threads, the session may be
+// removed and invalidated before the SSL library calls |SSL_SESSION_up_ref|,
+// whereas the callback may synchronize internally.
+//
+// To look up a session asynchronously, the callback may return
+// |SSL_magic_pending_session_ptr|. See the documentation for that function and
+// |SSL_ERROR_PENDING_SESSION|.
+//
+// If the internal session cache is enabled, the callback is only consulted if
+// the internal cache does not return a match.
+OPENSSL_EXPORT void SSL_CTX_sess_set_get_cb(
+    SSL_CTX *ctx, SSL_SESSION *(*get_session_cb)(SSL *ssl, const uint8_t *id,
+                                                 int id_len, int *out_copy));
+
+// SSL_CTX_sess_get_get_cb returns the callback set by
+// |SSL_CTX_sess_set_get_cb|.
+OPENSSL_EXPORT SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(
+    SSL *ssl, const uint8_t *id, int id_len, int *out_copy);
+
+// SSL_magic_pending_session_ptr returns a magic |SSL_SESSION|* which indicates
+// that the session isn't currently unavailable. |SSL_get_error| will then
+// return |SSL_ERROR_PENDING_SESSION| and the handshake can be retried later
+// when the lookup has completed.
+OPENSSL_EXPORT SSL_SESSION *SSL_magic_pending_session_ptr(void);
+
+
+// Session tickets.
+//
+// Session tickets, from RFC 5077, allow session resumption without server-side
+// state. The server maintains a secret ticket key and sends the client opaque
+// encrypted session parameters, called a ticket. When offering the session, the
+// client sends the ticket which the server decrypts to recover session state.
+// Session tickets are enabled by default but may be disabled with
+// |SSL_OP_NO_TICKET|.
+//
+// On the client, ticket-based sessions use the same APIs as ID-based tickets.
+// Callers do not need to handle them differently.
+//
+// On the server, tickets are encrypted and authenticated with a secret key.
+// By default, an |SSL_CTX| will manage session ticket encryption keys by
+// generating them internally and rotating every 48 hours. Tickets are minted
+// and processed transparently. The following functions may be used to configure
+// a persistent key or implement more custom behavior, including key rotation
+// and sharing keys between multiple servers in a large deployment. There are
+// three levels of customisation possible:
+//
+// 1) One can simply set the keys with |SSL_CTX_set_tlsext_ticket_keys|.
+// 2) One can configure an |EVP_CIPHER_CTX| and |HMAC_CTX| directly for
+//    encryption and authentication.
+// 3) One can configure an |SSL_TICKET_AEAD_METHOD| to have more control
+//    and the option of asynchronous decryption.
+//
+// An attacker that compromises a server's session ticket key can impersonate
+// the server and, prior to TLS 1.3, retroactively decrypt all application
+// traffic from sessions using that ticket key. Thus ticket keys must be
+// regularly rotated for forward secrecy. Note the default key is rotated
+// automatically once every 48 hours but manually configured keys are not.
+
+// SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL is the interval with which the
+// default session ticket encryption key is rotated, if in use. If any
+// non-default ticket encryption mechanism is configured, automatic rotation is
+// disabled.
+#define SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL (2 * 24 * 60 * 60)
+
+// SSL_CTX_get_tlsext_ticket_keys writes |ctx|'s session ticket key material to
+// |len| bytes of |out|. It returns one on success and zero if |len| is not
+// 48. If |out| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out,
+                                                  size_t len);
+
+// SSL_CTX_set_tlsext_ticket_keys sets |ctx|'s session ticket key material to
+// |len| bytes of |in|. It returns one on success and zero if |len| is not
+// 48. If |in| is NULL, it returns 48 instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in,
+                                                  size_t len);
+
+// SSL_TICKET_KEY_NAME_LEN is the length of the key name prefix of a session
+// ticket.
+#define SSL_TICKET_KEY_NAME_LEN 16
+
+// SSL_CTX_set_tlsext_ticket_key_cb sets the ticket callback to |callback| and
+// returns one. |callback| will be called when encrypting a new ticket and when
+// decrypting a ticket from the client.
+//
+// In both modes, |ctx| and |hmac_ctx| will already have been initialized with
+// |EVP_CIPHER_CTX_init| and |HMAC_CTX_init|, respectively. |callback|
+// configures |hmac_ctx| with an HMAC digest and key, and configures |ctx|
+// for encryption or decryption, based on the mode.
+//
+// When encrypting a new ticket, |encrypt| will be one. It writes a public
+// 16-byte key name to |key_name| and a fresh IV to |iv|. The output IV length
+// must match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns 1 on success and -1 on error.
+//
+// When decrypting a ticket, |encrypt| will be zero. |key_name| will point to a
+// 16-byte key name and |iv| points to an IV. The length of the IV consumed must
+// match |EVP_CIPHER_CTX_iv_length| of the cipher selected. In this mode,
+// |callback| returns -1 to abort the handshake, 0 if decrypting the ticket
+// failed, and 1 or 2 on success. If it returns 2, the ticket will be renewed.
+// This may be used to re-key the ticket.
+//
+// WARNING: |callback| wildly breaks the usual return value convention and is
+// called in two different modes.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_ticket_key_cb(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
+                                  EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
+                                  int encrypt));
+
+// ssl_ticket_aead_result_t enumerates the possible results from decrypting a
+// ticket with an |SSL_TICKET_AEAD_METHOD|.
+enum ssl_ticket_aead_result_t BORINGSSL_ENUM_INT {
+  // ssl_ticket_aead_success indicates that the ticket was successfully
+  // decrypted.
+  ssl_ticket_aead_success,
+  // ssl_ticket_aead_retry indicates that the operation could not be
+  // immediately completed and must be reattempted, via |open|, at a later
+  // point.
+  ssl_ticket_aead_retry,
+  // ssl_ticket_aead_ignore_ticket indicates that the ticket should be ignored
+  // (i.e. is corrupt or otherwise undecryptable).
+  ssl_ticket_aead_ignore_ticket,
+  // ssl_ticket_aead_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_ticket_aead_error,
+};
+
+// ssl_ticket_aead_method_st (aka |SSL_TICKET_AEAD_METHOD|) contains methods
+// for encrypting and decrypting session tickets.
+struct ssl_ticket_aead_method_st {
+  // max_overhead returns the maximum number of bytes of overhead that |seal|
+  // may add.
+  size_t (*max_overhead)(SSL *ssl);
+
+  // seal encrypts and authenticates |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes to |out|, and puts the number of bytes written in
+  // |*out_len|. The |in| and |out| buffers may be equal but will not otherwise
+  // alias. It returns one on success or zero on error.
+  int (*seal)(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out_len,
+              const uint8_t *in, size_t in_len);
+
+  // open authenticates and decrypts |in_len| bytes from |in|, writes, at most,
+  // |max_out_len| bytes of plaintext to |out|, and puts the number of bytes
+  // written in |*out_len|. The |in| and |out| buffers may be equal but will
+  // not otherwise alias. See |ssl_ticket_aead_result_t| for details of the
+  // return values. In the case that a retry is indicated, the caller should
+  // arrange for the high-level operation on |ssl| to be retried when the
+  // operation is completed, which will result in another call to |open|.
+  enum ssl_ticket_aead_result_t (*open)(SSL *ssl, uint8_t *out, size_t *out_len,
+                                        size_t max_out_len, const uint8_t *in,
+                                        size_t in_len);
+};
+
+// SSL_CTX_set_ticket_aead_method configures a custom ticket AEAD method table
+// on |ctx|. |aead_method| must remain valid for the lifetime of |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_ticket_aead_method(
+    SSL_CTX *ctx, const SSL_TICKET_AEAD_METHOD *aead_method);
+
+
+// Elliptic curve Diffie-Hellman.
+//
+// Cipher suites using an ECDHE key exchange perform Diffie-Hellman over an
+// elliptic curve negotiated by both endpoints. See RFC 4492. Only named curves
+// are supported. ECDHE is always enabled, but the curve preferences may be
+// configured with these functions.
+//
+// Note that TLS 1.3 renames these from curves to groups. For consistency, we
+// currently use the TLS 1.2 name in the API.
+
+// SSL_CTX_set1_curves sets the preferred curves for |ctx| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves,
+                                       size_t curves_len);
+
+// SSL_set1_curves sets the preferred curves for |ssl| to be |curves|. Each
+// element of |curves| should be a curve nid. It returns one on success and
+// zero on failure.
+//
+// Note that this API uses nid values from nid.h and not the |SSL_CURVE_*|
+// values defined below.
+OPENSSL_EXPORT int SSL_set1_curves(SSL *ssl, const int *curves,
+                                   size_t curves_len);
+
+// SSL_CTX_set1_curves_list sets the preferred curves for |ctx| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_CTX_set1_curves_list(SSL_CTX *ctx, const char *curves);
+
+// SSL_set1_curves_list sets the preferred curves for |ssl| to be the
+// colon-separated list |curves|. Each element of |curves| should be a curve
+// name (e.g. P-256, X25519, ...). It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set1_curves_list(SSL *ssl, const char *curves);
+
+// SSL_CURVE_* define TLS curve IDs.
+#define SSL_CURVE_SECP224R1 21
+#define SSL_CURVE_SECP256R1 23
+#define SSL_CURVE_SECP384R1 24
+#define SSL_CURVE_SECP521R1 25
+#define SSL_CURVE_X25519 29
+#define SSL_CURVE_CECPQ2 16696
+
+// SSL_get_curve_id returns the ID of the curve used by |ssl|'s most recently
+// completed handshake or 0 if not applicable.
+//
+// TODO(davidben): This API currently does not work correctly if there is a
+// renegotiation in progress. Fix this.
+OPENSSL_EXPORT uint16_t SSL_get_curve_id(const SSL *ssl);
+
+// SSL_get_curve_name returns a human-readable name for the curve specified by
+// the given TLS curve id, or NULL if the curve is unknown.
+OPENSSL_EXPORT const char *SSL_get_curve_name(uint16_t curve_id);
+
+
+// Certificate verification.
+//
+// SSL may authenticate either endpoint with an X.509 certificate. Typically
+// this is used to authenticate the server to the client. These functions
+// configure certificate verification.
+//
+// WARNING: By default, certificate verification errors on a client are not
+// fatal. See |SSL_VERIFY_NONE| This may be configured with
+// |SSL_CTX_set_verify|.
+//
+// By default clients are anonymous but a server may request a certificate from
+// the client by setting |SSL_VERIFY_PEER|.
+//
+// Many of these functions use OpenSSL's legacy X.509 stack which is
+// underdocumented and deprecated, but the replacement isn't ready yet. For
+// now, consumers may use the existing stack or bypass it by performing
+// certificate verification externally. This may be done with
+// |SSL_CTX_set_cert_verify_callback| or by extracting the chain with
+// |SSL_get_peer_cert_chain| after the handshake. In the future, functions will
+// be added to use the SSL stack without dependency on any part of the legacy
+// X.509 and ASN.1 stack.
+//
+// To augment certificate verification, a client may also enable OCSP stapling
+// (RFC 6066) and Certificate Transparency (RFC 6962) extensions.
+
+// SSL_VERIFY_NONE, on a client, verifies the server certificate but does not
+// make errors fatal. The result may be checked with |SSL_get_verify_result|. On
+// a server it does not request a client certificate. This is the default.
+#define SSL_VERIFY_NONE 0x00
+
+// SSL_VERIFY_PEER, on a client, makes server certificate errors fatal. On a
+// server it requests a client certificate and makes errors fatal. However,
+// anonymous clients are still allowed. See
+// |SSL_VERIFY_FAIL_IF_NO_PEER_CERT|.
+#define SSL_VERIFY_PEER 0x01
+
+// SSL_VERIFY_FAIL_IF_NO_PEER_CERT configures a server to reject connections if
+// the client declines to send a certificate. This flag must be used together
+// with |SSL_VERIFY_PEER|, otherwise it won't work.
+#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT 0x02
+
+// SSL_VERIFY_PEER_IF_NO_OBC configures a server to request a client certificate
+// if and only if Channel ID is not negotiated.
+#define SSL_VERIFY_PEER_IF_NO_OBC 0x04
+
+// SSL_CTX_set_verify configures certificate verification behavior. |mode| is
+// one of the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is
+// used to customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_verify(
+    SSL_CTX *ctx, int mode, int (*callback)(int ok, X509_STORE_CTX *store_ctx));
+
+// SSL_set_verify configures certificate verification behavior. |mode| is one of
+// the |SSL_VERIFY_*| values defined above. |callback|, if not NULL, is used to
+// customize certificate verification. See the behavior of
+// |X509_STORE_CTX_set_verify_cb|.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| with
+// |X509_STORE_CTX_get_ex_data| to look up the |SSL| from |store_ctx|.
+OPENSSL_EXPORT void SSL_set_verify(SSL *ssl, int mode,
+                                   int (*callback)(int ok,
+                                                   X509_STORE_CTX *store_ctx));
+
+enum ssl_verify_result_t BORINGSSL_ENUM_INT {
+  ssl_verify_ok,
+  ssl_verify_invalid,
+  ssl_verify_retry,
+};
+
+// SSL_CTX_set_custom_verify configures certificate verification. |mode| is one
+// of the |SSL_VERIFY_*| values defined above. |callback| performs the
+// certificate verification.
+//
+// The callback may call |SSL_get0_peer_certificates| for the certificate chain
+// to validate. The callback should return |ssl_verify_ok| if the certificate is
+// valid. If the certificate is invalid, the callback should return
+// |ssl_verify_invalid| and optionally set |*out_alert| to an alert to send to
+// the peer. Some useful alerts include |SSL_AD_CERTIFICATE_EXPIRED|,
+// |SSL_AD_CERTIFICATE_REVOKED|, |SSL_AD_UNKNOWN_CA|, |SSL_AD_BAD_CERTIFICATE|,
+// |SSL_AD_CERTIFICATE_UNKNOWN|, and |SSL_AD_INTERNAL_ERROR|. See RFC 5246
+// section 7.2.2 for their precise meanings. If unspecified,
+// |SSL_AD_CERTIFICATE_UNKNOWN| will be sent by default.
+//
+// To verify a certificate asynchronously, the callback may return
+// |ssl_verify_retry|. The handshake will then pause with |SSL_get_error|
+// returning |SSL_ERROR_WANT_CERTIFICATE_VERIFY|.
+OPENSSL_EXPORT void SSL_CTX_set_custom_verify(
+    SSL_CTX *ctx, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_set_custom_verify behaves like |SSL_CTX_set_custom_verify| but configures
+// an individual |SSL|.
+OPENSSL_EXPORT void SSL_set_custom_verify(
+    SSL *ssl, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert));
+
+// SSL_CTX_get_verify_mode returns |ctx|'s verify mode, set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
+
+// SSL_get_verify_mode returns |ssl|'s verify mode, set by |SSL_CTX_set_verify|
+// or |SSL_set_verify|.  It returns -1 on error.
+OPENSSL_EXPORT int SSL_get_verify_mode(const SSL *ssl);
+
+// SSL_CTX_get_verify_callback returns the callback set by
+// |SSL_CTX_set_verify|.
+OPENSSL_EXPORT int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_get_verify_callback returns the callback set by |SSL_CTX_set_verify| or
+// |SSL_set_verify|.
+OPENSSL_EXPORT int (*SSL_get_verify_callback(const SSL *ssl))(
+    int ok, X509_STORE_CTX *store_ctx);
+
+// SSL_CTX_set_verify_depth sets the maximum depth of a certificate chain
+// accepted in verification. This number does not include the leaf, so a depth
+// of 1 allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth);
+
+// SSL_set_verify_depth sets the maximum depth of a certificate chain accepted
+// in verification. This number does not include the leaf, so a depth of 1
+// allows the leaf and one CA certificate.
+OPENSSL_EXPORT void SSL_set_verify_depth(SSL *ssl, int depth);
+
+// SSL_CTX_get_verify_depth returns the maximum depth of a certificate accepted
+// in verification.
+OPENSSL_EXPORT int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
+
+// SSL_get_verify_depth returns the maximum depth of a certificate accepted in
+// verification.
+OPENSSL_EXPORT int SSL_get_verify_depth(const SSL *ssl);
+
+// SSL_CTX_set1_param sets verification parameters from |param|. It returns one
+// on success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_CTX_set1_param(SSL_CTX *ctx,
+                                      const X509_VERIFY_PARAM *param);
+
+// SSL_set1_param sets verification parameters from |param|. It returns one on
+// success and zero on failure. The caller retains ownership of |param|.
+OPENSSL_EXPORT int SSL_set1_param(SSL *ssl,
+                                  const X509_VERIFY_PARAM *param);
+
+// SSL_CTX_get0_param returns |ctx|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx);
+
+// SSL_get0_param returns |ssl|'s |X509_VERIFY_PARAM| for certificate
+// verification. The caller must not release the returned pointer but may call
+// functions on it to configure it.
+OPENSSL_EXPORT X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl);
+
+// SSL_CTX_set_purpose sets |ctx|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose);
+
+// SSL_set_purpose sets |ssl|'s |X509_VERIFY_PARAM|'s 'purpose' parameter to
+// |purpose|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_purpose(SSL *ssl, int purpose);
+
+// SSL_CTX_set_trust sets |ctx|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_trust(SSL_CTX *ctx, int trust);
+
+// SSL_set_trust sets |ssl|'s |X509_VERIFY_PARAM|'s 'trust' parameter to
+// |trust|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_trust(SSL *ssl, int trust);
+
+// SSL_CTX_set_cert_store sets |ctx|'s certificate store to |store|. It takes
+// ownership of |store|. The store is used for certificate verification.
+//
+// The store is also used for the auto-chaining feature, but this is deprecated.
+// See also |SSL_MODE_NO_AUTO_CHAIN|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store);
+
+// SSL_CTX_get_cert_store returns |ctx|'s certificate store.
+OPENSSL_EXPORT X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx);
+
+// SSL_CTX_set_default_verify_paths loads the OpenSSL system-default trust
+// anchors into |ctx|'s store. It returns one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
+
+// SSL_CTX_load_verify_locations loads trust anchors into |ctx|'s store from
+// |ca_file| and |ca_dir|, either of which may be NULL. If |ca_file| is passed,
+// it is opened and PEM-encoded CA certificates are read. If |ca_dir| is passed,
+// it is treated as a directory in OpenSSL's hashed directory format. It returns
+// one on success and zero on failure.
+//
+// See
+// https://www.openssl.org/docs/manmaster/ssl/SSL_CTX_load_verify_locations.html
+// for documentation on the directory format.
+OPENSSL_EXPORT int SSL_CTX_load_verify_locations(SSL_CTX *ctx,
+                                                 const char *ca_file,
+                                                 const char *ca_dir);
+
+// SSL_get_verify_result returns the result of certificate verification. It is
+// either |X509_V_OK| or a |X509_V_ERR_*| value.
+OPENSSL_EXPORT long SSL_get_verify_result(const SSL *ssl);
+
+// SSL_alert_from_verify_result returns the SSL alert code, such as
+// |SSL_AD_CERTIFICATE_EXPIRED|, that corresponds to an |X509_V_ERR_*| value.
+// The return value is always an alert, even when |result| is |X509_V_OK|.
+OPENSSL_EXPORT int SSL_alert_from_verify_result(long result);
+
+// SSL_get_ex_data_X509_STORE_CTX_idx returns the ex_data index used to look up
+// the |SSL| associated with an |X509_STORE_CTX| in the verify callback.
+OPENSSL_EXPORT int SSL_get_ex_data_X509_STORE_CTX_idx(void);
+
+// SSL_CTX_set_cert_verify_callback sets a custom callback to be called on
+// certificate verification rather than |X509_verify_cert|. |store_ctx| contains
+// the verification parameters. The callback should return one on success and
+// zero on fatal error. It may use |X509_STORE_CTX_set_error| to set a
+// verification result.
+//
+// The callback may use |SSL_get_ex_data_X509_STORE_CTX_idx| to recover the
+// |SSL| object from |store_ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_cert_verify_callback(
+    SSL_CTX *ctx, int (*callback)(X509_STORE_CTX *store_ctx, void *arg),
+    void *arg);
+
+// SSL_enable_signed_cert_timestamps causes |ssl| (which must be the client end
+// of a connection) to request SCTs from the server. See
+// https://tools.ietf.org/html/rfc6962.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_signed_cert_timestamps(SSL *ssl);
+
+// SSL_CTX_enable_signed_cert_timestamps enables SCT requests on all client SSL
+// objects created from |ctx|.
+//
+// Call |SSL_get0_signed_cert_timestamp_list| to recover the SCT after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx);
+
+// SSL_enable_ocsp_stapling causes |ssl| (which must be the client end of a
+// connection) to request a stapled OCSP response from the server.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_enable_ocsp_stapling(SSL *ssl);
+
+// SSL_CTX_enable_ocsp_stapling enables OCSP stapling on all client SSL objects
+// created from |ctx|.
+//
+// Call |SSL_get0_ocsp_response| to recover the OCSP response after the
+// handshake.
+OPENSSL_EXPORT void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx);
+
+// SSL_CTX_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL_CTX|.
+OPENSSL_EXPORT int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_CTX_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx,
+                                                  X509_STORE *store);
+
+// SSL_set0_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. Ownership of
+// |store| is transferred to the |SSL|.
+OPENSSL_EXPORT int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_set1_verify_cert_store sets an |X509_STORE| that will be used
+// exclusively for certificate verification and returns one. An additional
+// reference to |store| will be taken.
+OPENSSL_EXPORT int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store);
+
+// SSL_CTX_set_ed25519_enabled configures whether |ctx| advertises support for
+// the Ed25519 signature algorithm when using the default preference list. It is
+// disabled by default and may be enabled if the certificate verifier supports
+// Ed25519.
+OPENSSL_EXPORT void SSL_CTX_set_ed25519_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_CTX_set_verify_algorithm_prefs configures |ctx| to use |prefs| as the
+// preference list when verifying signature's from the peer's long-term key. It
+// returns one on zero on error. |prefs| should not include the internal-only
+// value |SSL_SIGN_RSA_PKCS1_MD5_SHA1|.
+OPENSSL_EXPORT int SSL_CTX_set_verify_algorithm_prefs(SSL_CTX *ctx,
+                                                      const uint16_t *prefs,
+                                                      size_t num_prefs);
+
+
+// Client certificate CA list.
+//
+// When requesting a client certificate, a server may advertise a list of
+// certificate authorities which are accepted. These functions may be used to
+// configure this list.
+
+// SSL_set_client_CA_list sets |ssl|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set_client_CA_list(SSL *ssl,
+                                           STACK_OF(X509_NAME) *name_list);
+
+// SSL_CTX_set_client_CA_list sets |ctx|'s client certificate CA list to
+// |name_list|. It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set_client_CA_list(SSL_CTX *ctx,
+                                               STACK_OF(X509_NAME) *name_list);
+
+// SSL_set0_client_CAs sets |ssl|'s client certificate CA list to |name_list|,
+// which should contain DER-encoded distinguished names (RFC 5280). It takes
+// ownership of |name_list|.
+OPENSSL_EXPORT void SSL_set0_client_CAs(SSL *ssl,
+                                        STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_CTX_set0_client_CAs sets |ctx|'s client certificate CA list to
+// |name_list|, which should contain DER-encoded distinguished names (RFC 5280).
+// It takes ownership of |name_list|.
+OPENSSL_EXPORT void SSL_CTX_set0_client_CAs(SSL_CTX *ctx,
+                                            STACK_OF(CRYPTO_BUFFER) *name_list);
+
+// SSL_get_client_CA_list returns |ssl|'s client certificate CA list. If |ssl|
+// has not been configured as a client, this is the list configured by
+// |SSL_CTX_set_client_CA_list|.
+//
+// If configured as a client, it returns the client certificate CA list sent by
+// the server. In this mode, the behavior is undefined except during the
+// callbacks set by |SSL_CTX_set_cert_cb| and |SSL_CTX_set_client_cert_cb| or
+// when the handshake is paused because of them.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl);
+
+// SSL_get0_server_requested_CAs returns the CAs sent by a server to guide a
+// client in certificate selection. They are a series of DER-encoded X.509
+// names. This function may only be called during a callback set by
+// |SSL_CTX_set_cert_cb| or when the handshake is paused because of it.
+//
+// The returned stack is owned by |ssl|, as are its contents. It should not be
+// used past the point where the handshake is restarted after the callback.
+OPENSSL_EXPORT const STACK_OF(CRYPTO_BUFFER) *
+    SSL_get0_server_requested_CAs(const SSL *ssl);
+
+// SSL_CTX_get_client_CA_list returns |ctx|'s client certificate CA list.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *
+    SSL_CTX_get_client_CA_list(const SSL_CTX *ctx);
+
+// SSL_add_client_CA appends |x509|'s subject to the client certificate CA list.
+// It returns one on success or zero on error. The caller retains ownership of
+// |x509|.
+OPENSSL_EXPORT int SSL_add_client_CA(SSL *ssl, X509 *x509);
+
+// SSL_CTX_add_client_CA appends |x509|'s subject to the client certificate CA
+// list. It returns one on success or zero on error. The caller retains
+// ownership of |x509|.
+OPENSSL_EXPORT int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509);
+
+// SSL_load_client_CA_file opens |file| and reads PEM-encoded certificates from
+// it. It returns a newly-allocated stack of the certificate subjects or NULL
+// on error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
+
+// SSL_dup_CA_list makes a deep copy of |list|. It returns the new list on
+// success or NULL on allocation error.
+OPENSSL_EXPORT STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list);
+
+// SSL_add_file_cert_subjects_to_stack behaves like |SSL_load_client_CA_file|
+// but appends the result to |out|. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                       const char *file);
+
+
+// Server name indication.
+//
+// The server_name extension (RFC 3546) allows the client to advertise the name
+// of the server it is connecting to. This is used in virtual hosting
+// deployments to select one of a several certificates on a single IP. Only the
+// host_name name type is supported.
+
+#define TLSEXT_NAMETYPE_host_name 0
+
+// SSL_set_tlsext_host_name, for a client, configures |ssl| to advertise |name|
+// in the server_name extension. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_tlsext_host_name(SSL *ssl, const char *name);
+
+// SSL_get_servername, for a server, returns the hostname supplied by the
+// client or NULL if there was none. The |type| argument must be
+// |TLSEXT_NAMETYPE_host_name|.
+OPENSSL_EXPORT const char *SSL_get_servername(const SSL *ssl, const int type);
+
+// SSL_get_servername_type, for a server, returns |TLSEXT_NAMETYPE_host_name|
+// if the client sent a hostname and -1 otherwise.
+OPENSSL_EXPORT int SSL_get_servername_type(const SSL *ssl);
+
+// SSL_CTX_set_tlsext_servername_callback configures |callback| to be called on
+// the server after ClientHello extensions have been parsed and returns one.
+// The callback may use |SSL_get_servername| to examine the server_name
+// extension and returns a |SSL_TLSEXT_ERR_*| value. The value of |arg| may be
+// set by calling |SSL_CTX_set_tlsext_servername_arg|.
+//
+// If the callback returns |SSL_TLSEXT_ERR_NOACK|, the server_name extension is
+// not acknowledged in the ServerHello. If the return value is
+// |SSL_TLSEXT_ERR_ALERT_FATAL|, then |*out_alert| is the alert to send,
+// defaulting to |SSL_AD_UNRECOGNIZED_NAME|. |SSL_TLSEXT_ERR_ALERT_WARNING| is
+// ignored and treated as |SSL_TLSEXT_ERR_OK|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_callback(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg));
+
+// SSL_CTX_set_tlsext_servername_arg sets the argument to the servername
+// callback and returns one. See |SSL_CTX_set_tlsext_servername_callback|.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_TLSEXT_ERR_* are values returned by some extension-related callbacks.
+#define SSL_TLSEXT_ERR_OK 0
+#define SSL_TLSEXT_ERR_ALERT_WARNING 1
+#define SSL_TLSEXT_ERR_ALERT_FATAL 2
+#define SSL_TLSEXT_ERR_NOACK 3
+
+// SSL_set_SSL_CTX changes |ssl|'s |SSL_CTX|. |ssl| will use the
+// certificate-related settings from |ctx|, and |SSL_get_SSL_CTX| will report
+// |ctx|. This function may be used during the callbacks registered by
+// |SSL_CTX_set_select_certificate_cb|,
+// |SSL_CTX_set_tlsext_servername_callback|, and |SSL_CTX_set_cert_cb| or when
+// the handshake is paused from them. It is typically used to switch
+// certificates based on SNI.
+//
+// Note the session cache and related settings will continue to use the initial
+// |SSL_CTX|. Callers should use |SSL_CTX_set_session_id_context| to partition
+// the session cache between different domains.
+//
+// TODO(davidben): Should other settings change after this call?
+OPENSSL_EXPORT SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx);
+
+
+// Application-layer protocol negotiation.
+//
+// The ALPN extension (RFC 7301) allows negotiating different application-layer
+// protocols over a single port. This is used, for example, to negotiate
+// HTTP/2.
+
+// SSL_CTX_set_alpn_protos sets the client ALPN protocol list on |ctx| to
+// |protos|. |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
+                                           unsigned protos_len);
+
+// SSL_set_alpn_protos sets the client ALPN protocol list on |ssl| to |protos|.
+// |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings). It returns zero on success and one on failure.
+// Configuring this list enables ALPN on a client.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention.
+OPENSSL_EXPORT int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos,
+                                       unsigned protos_len);
+
+// SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
+// during ClientHello processing in order to select an ALPN protocol from the
+// client's list of offered protocols. Configuring this callback enables ALPN on
+// a server.
+//
+// The callback is passed a wire-format (i.e. a series of non-empty, 8-bit
+// length-prefixed strings) ALPN protocol list in |in|. It should set |*out| and
+// |*out_len| to the selected protocol and return |SSL_TLSEXT_ERR_OK| on
+// success. It does not pass ownership of the buffer. Otherwise, it should
+// return |SSL_TLSEXT_ERR_NOACK|. Other |SSL_TLSEXT_ERR_*| values are
+// unimplemented and will be treated as |SSL_TLSEXT_ERR_NOACK|.
+//
+// The cipher suite is selected before negotiating ALPN. The callback may use
+// |SSL_get_pending_cipher| to query the cipher suite.
+OPENSSL_EXPORT void SSL_CTX_set_alpn_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, const uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
+// On return it sets |*out_data| to point to |*out_len| bytes of protocol name
+// (not including the leading length-prefix byte). If the server didn't respond
+// with a negotiated protocol then |*out_len| will be zero.
+OPENSSL_EXPORT void SSL_get0_alpn_selected(const SSL *ssl,
+                                           const uint8_t **out_data,
+                                           unsigned *out_len);
+
+// SSL_CTX_set_allow_unknown_alpn_protos configures client connections on |ctx|
+// to allow unknown ALPN protocols from the server. Otherwise, by default, the
+// client will require that the protocol be advertised in
+// |SSL_CTX_set_alpn_protos|.
+OPENSSL_EXPORT void SSL_CTX_set_allow_unknown_alpn_protos(SSL_CTX *ctx,
+                                                          int enabled);
+
+
+// Certificate compression.
+//
+// Certificates in TLS 1.3 can be compressed[1]. BoringSSL supports this as both
+// a client and a server, but does not link against any specific compression
+// libraries in order to keep dependencies to a minimum. Instead, hooks for
+// compression and decompression can be installed in an |SSL_CTX| to enable
+// support.
+//
+// [1] https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03.
+
+// ssl_cert_compression_func_t is a pointer to a function that performs
+// compression. It must write the compressed representation of |in| to |out|,
+// returning one on success and zero on error. The results of compressing
+// certificates are not cached internally. Implementations may wish to implement
+// their own cache if they expect it to be useful given the certificates that
+// they serve.
+typedef int (*ssl_cert_compression_func_t)(SSL *ssl, CBB *out,
+                                           const uint8_t *in, size_t in_len);
+
+// ssl_cert_decompression_func_t is a pointer to a function that performs
+// decompression. The compressed data from the peer is passed as |in| and the
+// decompressed result must be exactly |uncompressed_len| bytes long. It returns
+// one on success, in which case |*out| must be set to the result of
+// decompressing |in|, or zero on error. Setting |*out| transfers ownership,
+// i.e. |CRYPTO_BUFFER_free| will be called on |*out| at some point in the
+// future. The results of decompressions are not cached internally.
+// Implementations may wish to implement their own cache if they expect it to be
+// useful.
+typedef int (*ssl_cert_decompression_func_t)(SSL *ssl, CRYPTO_BUFFER **out,
+                                             size_t uncompressed_len,
+                                             const uint8_t *in, size_t in_len);
+
+// SSL_CTX_add_cert_compression_alg registers a certificate compression
+// algorithm on |ctx| with ID |alg_id|. (The value of |alg_id| should be an IANA
+// assigned value and each can only be registered once.)
+//
+// One of the function pointers may be NULL to avoid having to implement both
+// sides of a compression algorithm if you're only going to use it in one
+// direction. In this case, the unimplemented direction acts like it was never
+// configured.
+//
+// For a server, algorithms are registered in preference order with the most
+// preferable first. It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_CTX_add_cert_compression_alg(
+    SSL_CTX *ctx, uint16_t alg_id, ssl_cert_compression_func_t compress,
+    ssl_cert_decompression_func_t decompress);
+
+
+// Next protocol negotiation.
+//
+// The NPN extension (draft-agl-tls-nextprotoneg-03) is the predecessor to ALPN
+// and deprecated in favor of it.
+
+// SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
+// TLS server needs a list of supported protocols for Next Protocol
+// Negotiation. The returned list must be in wire format. The list is returned
+// by setting |*out| to point to it and |*out_len| to its length. This memory
+// will not be modified, but one should assume that |ssl| keeps a reference to
+// it.
+//
+// The callback should return |SSL_TLSEXT_ERR_OK| if it wishes to advertise.
+// Otherwise, no such extension will be included in the ServerHello.
+OPENSSL_EXPORT void SSL_CTX_set_next_protos_advertised_cb(
+    SSL_CTX *ctx,
+    int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
+    void *arg);
+
+// SSL_CTX_set_next_proto_select_cb sets a callback that is called when a client
+// needs to select a protocol from the server's provided list. |*out| must be
+// set to point to the selected protocol (which may be within |in|). The length
+// of the protocol name must be written into |*out_len|. The server's advertised
+// protocols are provided in |in| and |in_len|. The callback can assume that
+// |in| is syntactically valid.
+//
+// The client must select a protocol. It is fatal to the connection if this
+// callback returns a value other than |SSL_TLSEXT_ERR_OK|.
+//
+// Configuring this callback enables NPN on a client.
+OPENSSL_EXPORT void SSL_CTX_set_next_proto_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg);
+
+// SSL_get0_next_proto_negotiated sets |*out_data| and |*out_len| to point to
+// the client's requested protocol for this connection. If the client didn't
+// request any protocol, then |*out_data| is set to NULL.
+//
+// Note that the client can request any protocol it chooses. The value returned
+// from this function need not be a member of the list of supported protocols
+// provided by the server.
+OPENSSL_EXPORT void SSL_get0_next_proto_negotiated(const SSL *ssl,
+                                                   const uint8_t **out_data,
+                                                   unsigned *out_len);
+
+// SSL_select_next_proto implements the standard protocol selection. It is
+// expected that this function is called from the callback set by
+// |SSL_CTX_set_next_proto_select_cb|.
+//
+// |peer| and |supported| must be vectors of 8-bit, length-prefixed byte strings
+// containing the peer and locally-configured protocols, respectively. The
+// length byte itself is not included in the length. A byte string of length 0
+// is invalid. No byte string may be truncated. |supported| is assumed to be
+// non-empty.
+//
+// This function finds the first protocol in |peer| which is also in
+// |supported|. If one was found, it sets |*out| and |*out_len| to point to it
+// and returns |OPENSSL_NPN_NEGOTIATED|. Otherwise, it returns
+// |OPENSSL_NPN_NO_OVERLAP| and sets |*out| and |*out_len| to the first
+// supported protocol.
+OPENSSL_EXPORT int SSL_select_next_proto(uint8_t **out, uint8_t *out_len,
+                                         const uint8_t *peer, unsigned peer_len,
+                                         const uint8_t *supported,
+                                         unsigned supported_len);
+
+#define OPENSSL_NPN_UNSUPPORTED 0
+#define OPENSSL_NPN_NEGOTIATED 1
+#define OPENSSL_NPN_NO_OVERLAP 2
+
+
+// Channel ID.
+//
+// See draft-balfanz-tls-channelid-01.
+
+// SSL_CTX_set_tls_channel_id_enabled configures whether connections associated
+// with |ctx| should enable Channel ID.
+OPENSSL_EXPORT void SSL_CTX_set_tls_channel_id_enabled(SSL_CTX *ctx,
+                                                       int enabled);
+
+// SSL_set_tls_channel_id_enabled configures whether |ssl| should enable Channel
+// ID.
+OPENSSL_EXPORT void SSL_set_tls_channel_id_enabled(SSL *ssl, int enabled);
+
+// SSL_CTX_set1_tls_channel_id configures a TLS client to send a TLS Channel ID
+// to compatible servers. |private_key| must be a P-256 EC key. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx,
+                                               EVP_PKEY *private_key);
+
+// SSL_set1_tls_channel_id configures a TLS client to send a TLS Channel ID to
+// compatible servers. |private_key| must be a P-256 EC key. It returns one on
+// success and zero on error.
+OPENSSL_EXPORT int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key);
+
+// SSL_get_tls_channel_id gets the client's TLS Channel ID from a server |SSL*|
+// and copies up to the first |max_out| bytes into |out|. The Channel ID
+// consists of the client's P-256 public key as an (x,y) pair where each is a
+// 32-byte, big-endian field element. It returns 0 if the client didn't offer a
+// Channel ID and the length of the complete Channel ID otherwise.
+OPENSSL_EXPORT size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out,
+                                             size_t max_out);
+
+// SSL_CTX_set_channel_id_cb sets a callback to be called when a TLS Channel ID
+// is requested. The callback may set |*out_pkey| to a key, passing a reference
+// to the caller. If none is returned, the handshake will pause and
+// |SSL_get_error| will return |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+//
+// See also |SSL_ERROR_WANT_CHANNEL_ID_LOOKUP|.
+OPENSSL_EXPORT void SSL_CTX_set_channel_id_cb(
+    SSL_CTX *ctx, void (*channel_id_cb)(SSL *ssl, EVP_PKEY **out_pkey));
+
+// SSL_CTX_get_channel_id_cb returns the callback set by
+// |SSL_CTX_set_channel_id_cb|.
+OPENSSL_EXPORT void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(
+    SSL *ssl, EVP_PKEY **out_pkey);
+
+
+// Token Binding.
+//
+// See draft-ietf-tokbind-protocol-16.
+
+// SSL_set_token_binding_params sets |params| as the Token Binding Key
+// parameters (section 3 of draft-ietf-tokbind-protocol-16) to negotiate on the
+// connection. If this function is not called, or if |len| is 0, then this
+// endpoint will not attempt to negotiate Token Binding. |params| are provided
+// in preference order, with the more preferred parameters at the beginning of
+// the list. This function returns 1 on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_token_binding_params(SSL *ssl, const uint8_t *params,
+                                                size_t len);
+
+// SSL_is_token_binding_negotiated returns 1 if Token Binding was negotiated
+// on this connection and 0 otherwise. On a server, it is possible for this
+// function to return 1 when the client's view of the connection is that Token
+// Binding was not negotiated. This occurs when the server indicates a version
+// of Token Binding less than the client's minimum version.
+OPENSSL_EXPORT int SSL_is_token_binding_negotiated(const SSL *ssl);
+
+// SSL_get_negotiated_token_binding_param returns the TokenBindingKeyParameters
+// enum value that was negotiated. It is only valid to call this function if
+// SSL_is_token_binding_negotiated returned 1, otherwise this function returns
+// an undefined value.
+OPENSSL_EXPORT uint8_t SSL_get_negotiated_token_binding_param(const SSL *ssl);
+
+
+// DTLS-SRTP.
+//
+// See RFC 5764.
+
+// srtp_protection_profile_st (aka |SRTP_PROTECTION_PROFILE|) is an SRTP
+// profile for use with the use_srtp extension.
+struct srtp_protection_profile_st {
+  const char *name;
+  unsigned long id;
+} /* SRTP_PROTECTION_PROFILE */;
+
+DEFINE_CONST_STACK_OF(SRTP_PROTECTION_PROFILE)
+
+// SRTP_* define constants for SRTP profiles.
+#define SRTP_AES128_CM_SHA1_80 0x0001
+#define SRTP_AES128_CM_SHA1_32 0x0002
+#define SRTP_AES128_F8_SHA1_80 0x0003
+#define SRTP_AES128_F8_SHA1_32 0x0004
+#define SRTP_NULL_SHA1_80      0x0005
+#define SRTP_NULL_SHA1_32      0x0006
+#define SRTP_AEAD_AES_128_GCM  0x0007
+#define SRTP_AEAD_AES_256_GCM  0x0008
+
+// SSL_CTX_set_srtp_profiles enables SRTP for all SSL objects created from
+// |ctx|. |profile| contains a colon-separated list of profile names. It returns
+// one on success and zero on failure.
+OPENSSL_EXPORT int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx,
+                                             const char *profiles);
+
+// SSL_set_srtp_profiles enables SRTP for |ssl|.  |profile| contains a
+// colon-separated list of profile names. It returns one on success and zero on
+// failure.
+OPENSSL_EXPORT int SSL_set_srtp_profiles(SSL *ssl, const char *profiles);
+
+// SSL_get_srtp_profiles returns the SRTP profiles supported by |ssl|.
+OPENSSL_EXPORT STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(
+    SSL *ssl);
+
+// SSL_get_selected_srtp_profile returns the selected SRTP profile, or NULL if
+// SRTP was not negotiated.
+OPENSSL_EXPORT const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(
+    SSL *ssl);
+
+
+// Pre-shared keys.
+//
+// Connections may be configured with PSK (Pre-Shared Key) cipher suites. These
+// authenticate using out-of-band pre-shared keys rather than certificates. See
+// RFC 4279.
+//
+// This implementation uses NUL-terminated C strings for identities and identity
+// hints, so values with a NUL character are not supported. (RFC 4279 does not
+// specify the format of an identity.)
+
+// PSK_MAX_IDENTITY_LEN is the maximum supported length of a PSK identity,
+// excluding the NUL terminator.
+#define PSK_MAX_IDENTITY_LEN 128
+
+// PSK_MAX_PSK_LEN is the maximum supported length of a pre-shared key.
+#define PSK_MAX_PSK_LEN 256
+
+// SSL_CTX_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client.
+//
+// The callback is passed the identity hint in |hint| or NULL if none was
+// provided. It should select a PSK identity and write the identity and the
+// corresponding PSK to |identity| and |psk|, respectively. The identity is
+// written as a NUL-terminated C string of length (excluding the NUL terminator)
+// at most |max_identity_len|. The PSK's length must be at most |max_psk_len|.
+// The callback returns the length of the PSK or 0 if no suitable identity was
+// found.
+OPENSSL_EXPORT void SSL_CTX_set_psk_client_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                                 unsigned max_identity_len, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_client_callback sets the callback to be called when PSK is
+// negotiated on the client. This callback must be set to enable PSK cipher
+// suites on the client. See also |SSL_CTX_set_psk_client_callback|.
+OPENSSL_EXPORT void SSL_set_psk_client_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                             unsigned max_identity_len, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server.
+//
+// The callback is passed the identity in |identity|. It should write a PSK of
+// length at most |max_psk_len| to |psk| and return the number of bytes written
+// or zero if the PSK identity is unknown.
+OPENSSL_EXPORT void SSL_CTX_set_psk_server_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                                 unsigned max_psk_len));
+
+// SSL_set_psk_server_callback sets the callback to be called when PSK is
+// negotiated on the server. This callback must be set to enable PSK cipher
+// suites on the server. See also |SSL_CTX_set_psk_server_callback|.
+OPENSSL_EXPORT void SSL_set_psk_server_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                             unsigned max_psk_len));
+
+// SSL_CTX_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx,
+                                                 const char *identity_hint);
+
+// SSL_use_psk_identity_hint configures server connections to advertise an
+// identity hint of |identity_hint|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int SSL_use_psk_identity_hint(SSL *ssl,
+                                             const char *identity_hint);
+
+// SSL_get_psk_identity_hint returns the PSK identity hint advertised for |ssl|
+// or NULL if there is none.
+OPENSSL_EXPORT const char *SSL_get_psk_identity_hint(const SSL *ssl);
+
+// SSL_get_psk_identity, after the handshake completes, returns the PSK identity
+// that was negotiated by |ssl| or NULL if PSK was not used.
+OPENSSL_EXPORT const char *SSL_get_psk_identity(const SSL *ssl);
+
+
+// QUIC transport parameters.
+//
+// draft-ietf-quic-tls defines a new TLS extension quic_transport_parameters
+// used by QUIC for each endpoint to unilaterally declare its supported
+// transport parameters. draft-ietf-quic-transport (section 7.4) defines the
+// contents of that extension (a TransportParameters struct) and describes how
+// to handle it and its semantic meaning.
+//
+// BoringSSL handles this extension as an opaque byte string. The caller is
+// responsible for serializing and parsing it.
+
+// SSL_set_quic_transport_params configures |ssl| to send |params| (of length
+// |params_len|) in the quic_transport_parameters extension in either the
+// ClientHello or EncryptedExtensions handshake message. This extension will
+// only be sent if the TLS version is at least 1.3, and for a server, only if
+// the client sent the extension. The buffer pointed to by |params| only need be
+// valid for the duration of the call to this function. This function returns 1
+// on success and 0 on failure.
+OPENSSL_EXPORT int SSL_set_quic_transport_params(SSL *ssl,
+                                                 const uint8_t *params,
+                                                 size_t params_len);
+
+// SSL_get_peer_quic_transport_params provides the caller with the value of the
+// quic_transport_parameters extension sent by the peer. A pointer to the buffer
+// containing the TransportParameters will be put in |*out_params|, and its
+// length in |*params_len|. This buffer will be valid for the lifetime of the
+// |SSL|. If no params were received from the peer, |*out_params_len| will be 0.
+OPENSSL_EXPORT void SSL_get_peer_quic_transport_params(const SSL *ssl,
+                                                       const uint8_t **out_params,
+                                                       size_t *out_params_len);
+
+
+// Delegated credentials.
+//
+// *** EXPERIMENTAL — PRONE TO CHANGE ***
+//
+// draft-ietf-tls-subcerts is a proposed extension for TLS 1.3 and above that
+// allows an end point to use its certificate to delegate credentials for
+// authentication. If the peer indicates support for this extension, then this
+// host may use a delegated credential to sign the handshake. Once issued,
+// credentials can't be revoked. In order to mitigate the damage in case the
+// credential secret key is compromised, the credential is only valid for a
+// short time (days, hours, or even minutes). This library implements draft-03
+// of the protocol spec.
+//
+// The extension ID has not been assigned; we're using 0xff02 for the time
+// being. Currently only the server side is implemented.
+//
+// Servers configure a DC for use in the handshake via
+// |SSL_set1_delegated_credential|. It must be signed by the host's end-entity
+// certificate as defined in draft-ietf-tls-subcerts-03.
+
+// SSL_set1_delegated_credential configures the delegated credential (DC) that
+// will be sent to the peer for the current connection. |dc| is the DC in wire
+// format, and |pkey| or |key_method| is the corresponding private key.
+// Currently (as of draft-03), only servers may configure a DC to use in the
+// handshake.
+//
+// The DC will only be used if the protocol version is correct and the signature
+// scheme is supported by the peer. If not, the DC will not be negotiated and
+// the handshake will use the private key (or private key method) associated
+// with the certificate.
+OPENSSL_EXPORT int SSL_set1_delegated_credential(
+    SSL *ssl, CRYPTO_BUFFER *dc, EVP_PKEY *pkey,
+    const SSL_PRIVATE_KEY_METHOD *key_method);
+
+// SSL_delegated_credential_used returns one if a delegated credential was used
+// and zero otherwise.
+OPENSSL_EXPORT int SSL_delegated_credential_used(const SSL *ssl);
+
+
+// QUIC integration.
+//
+// QUIC acts as an underlying transport for the TLS 1.3 handshake. The following
+// functions allow a QUIC implementation to serve as the underlying transport as
+// described in draft-ietf-quic-tls.
+//
+// When configured for QUIC, |SSL_do_handshake| will drive the handshake as
+// before, but it will not use the configured |BIO|. It will call functions on
+// |SSL_QUIC_METHOD| to configure secrets and send data. If data is needed from
+// the peer, it will return |SSL_ERROR_WANT_READ|. When received, the caller
+// should call |SSL_provide_quic_data| and then |SSL_do_handshake| to continue
+// the handshake. After the handshake is complete, the caller should call
+// |SSL_provide_quic_data| for any post-handshake data, followed by
+// |SSL_process_quic_post_handshake| to process it. It is an error to call
+// |SSL_read| and |SSL_write| in QUIC.
+//
+// 0-RTT behaves similarly to |TLS_method|'s usual behavior. |SSL_do_handshake|
+// returns early as soon as the client (respectively, server) is allowed to send
+// 0-RTT (respectively, half-RTT) data. The caller should then call
+// |SSL_do_handshake| again to consume the remaining handshake messages and
+// confirm the handshake. As a client, |SSL_ERROR_EARLY_DATA_REJECTED| and
+// |SSL_reset_early_data_reject| behave as usual.
+//
+// Note that secrets for an encryption level may be available to QUIC before the
+// level is active in TLS. Callers should use |SSL_quic_read_level| to determine
+// the active read level for |SSL_provide_quic_data|. |SSL_do_handshake| will
+// pass the active write level to |SSL_QUIC_METHOD| when writing data. Callers
+// can use |SSL_quic_write_level| to query the active write level when
+// generating their own errors.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-tls-15#section-4.1 for more
+// details.
+//
+// To avoid DoS attacks, the QUIC implementation must limit the amount of data
+// being queued up. The implementation can call
+// |SSL_quic_max_handshake_flight_len| to get the maximum buffer length at each
+// encryption level.
+//
+// Note: 0-RTT support is incomplete and does not currently handle QUIC
+// transport parameters and server SETTINGS frame.
+
+// ssl_encryption_level_t represents a specific QUIC encryption level used to
+// transmit handshake messages.
+enum ssl_encryption_level_t BORINGSSL_ENUM_INT {
+  ssl_encryption_initial = 0,
+  ssl_encryption_early_data,
+  ssl_encryption_handshake,
+  ssl_encryption_application,
+};
+
+// ssl_quic_method_st (aka |SSL_QUIC_METHOD|) describes custom QUIC hooks.
+struct ssl_quic_method_st {
+  // set_encryption_secrets configures the read and write secrets for the given
+  // encryption level. This function will always be called before an encryption
+  // level other than |ssl_encryption_initial| is used. Note, however, that
+  // secrets for a level may be configured before TLS is ready to send or accept
+  // data at that level.
+  //
+  // When reading packets at a given level, the QUIC implementation must send
+  // ACKs at the same level, so this function provides read and write secrets
+  // together. The exception is |ssl_encryption_early_data|, where secrets are
+  // only available in the client to server direction. The other secret will be
+  // NULL. The server acknowledges such data at |ssl_encryption_application|,
+  // which will be configured in the same |SSL_do_handshake| call.
+  //
+  // This function should use |SSL_get_current_cipher| to determine the TLS
+  // cipher suite.
+  //
+  // It returns one on success and zero on error.
+  int (*set_encryption_secrets)(SSL *ssl, enum ssl_encryption_level_t level,
+                                const uint8_t *read_secret,
+                                const uint8_t *write_secret, size_t secret_len);
+  // add_handshake_data adds handshake data to the current flight at the given
+  // encryption level. It returns one on success and zero on error.
+  //
+  // BoringSSL will pack data from a single encryption level together, but a
+  // single handshake flight may include multiple encryption levels. Callers
+  // should defer writing data to the network until |flush_flight| to better
+  // pack QUIC packets into transport datagrams.
+  int (*add_handshake_data)(SSL *ssl, enum ssl_encryption_level_t level,
+                            const uint8_t *data, size_t len);
+  // flush_flight is called when the current flight is complete and should be
+  // written to the transport. Note a flight may contain data at several
+  // encryption levels. It returns one on success and zero on error.
+  int (*flush_flight)(SSL *ssl);
+  // send_alert sends a fatal alert at the specified encryption level. It
+  // returns one on success and zero on error.
+  int (*send_alert)(SSL *ssl, enum ssl_encryption_level_t level, uint8_t alert);
+};
+
+// SSL_quic_max_handshake_flight_len returns returns the maximum number of bytes
+// that may be received at the given encryption level. This function should be
+// used to limit buffering in the QUIC implementation.
+//
+// See https://tools.ietf.org/html/draft-ietf-quic-transport-16#section-4.4.
+OPENSSL_EXPORT size_t SSL_quic_max_handshake_flight_len(
+    const SSL *ssl, enum ssl_encryption_level_t level);
+
+// SSL_quic_read_level returns the current read encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_read_level(const SSL *ssl);
+
+// SSL_quic_write_level returns the current write encryption level.
+OPENSSL_EXPORT enum ssl_encryption_level_t SSL_quic_write_level(const SSL *ssl);
+
+// SSL_provide_quic_data provides data from QUIC at a particular encryption
+// level |level|. It is an error to call this function outside of the handshake
+// or with an encryption level other than the current read level. It returns one
+// on success and zero on error.
+OPENSSL_EXPORT int SSL_provide_quic_data(SSL *ssl,
+                                         enum ssl_encryption_level_t level,
+                                         const uint8_t *data, size_t len);
+
+
+// SSL_process_quic_post_handshake processes any data that QUIC has provided
+// after the handshake has completed. This includes NewSessionTicket messages
+// sent by the server. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_process_quic_post_handshake(SSL *ssl);
+
+// SSL_CTX_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ctx|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_CTX_set_quic_method(SSL_CTX *ctx,
+                                           const SSL_QUIC_METHOD *quic_method);
+
+// SSL_set_quic_method configures the QUIC hooks. This should only be
+// configured with a minimum version of TLS 1.3. |quic_method| must remain valid
+// for the lifetime of |ssl|. It returns one on success and zero on error.
+OPENSSL_EXPORT int SSL_set_quic_method(SSL *ssl,
+                                       const SSL_QUIC_METHOD *quic_method);
+
+
+// Early data.
+//
+// WARNING: 0-RTT support in BoringSSL is currently experimental and not fully
+// implemented. It may cause interoperability or security failures when used.
+//
+// Early data, or 0-RTT, is a feature in TLS 1.3 which allows clients to send
+// data on the first flight during a resumption handshake. This can save a
+// round-trip in some application protocols.
+//
+// WARNING: A 0-RTT handshake has different security properties from normal
+// handshake, so it is off by default unless opted in. In particular, early data
+// is replayable by a network attacker. Callers must account for this when
+// sending or processing data before the handshake is confirmed. See RFC 8446
+// for more information.
+//
+// As a server, if early data is accepted, |SSL_do_handshake| will complete as
+// soon as the ClientHello is processed and server flight sent. |SSL_write| may
+// be used to send half-RTT data. |SSL_read| will consume early data and
+// transition to 1-RTT data as appropriate. Prior to the transition,
+// |SSL_in_init| will report the handshake is still in progress. Callers may use
+// it or |SSL_in_early_data| to defer or reject requests as needed.
+//
+// Early data as a client is more complex. If the offered session (see
+// |SSL_set_session|) is 0-RTT-capable, the handshake will return after sending
+// the ClientHello. The predicted peer certificates and ALPN protocol will be
+// available via the usual APIs. |SSL_write| will write early data, up to the
+// session's limit. Writes past this limit and |SSL_read| will complete the
+// handshake before continuing. Callers may also call |SSL_do_handshake| again
+// to complete the handshake sooner.
+//
+// If the server accepts early data, the handshake will succeed. |SSL_read| and
+// |SSL_write| will then act as in a 1-RTT handshake. The peer certificates and
+// ALPN protocol will be as predicted and need not be re-queried.
+//
+// If the server rejects early data, |SSL_do_handshake| (and thus |SSL_read| and
+// |SSL_write|) will then fail with |SSL_get_error| returning
+// |SSL_ERROR_EARLY_DATA_REJECTED|. The caller should treat this as a connection
+// error and most likely perform a high-level retry. Note the server may still
+// have processed the early data due to attacker replays.
+//
+// To then continue the handshake on the original connection, use
+// |SSL_reset_early_data_reject|. The connection will then behave as one which
+// had not yet completed the handshake. This allows a faster retry than making a
+// fresh connection. |SSL_do_handshake| will complete the full handshake,
+// possibly resulting in different peer certificates, ALPN protocol, and other
+// properties. The caller must disregard any values from before the reset and
+// query again.
+//
+// Finally, to implement the fallback described in RFC 8446 appendix D.3, retry
+// on a fresh connection without 0-RTT if the handshake fails with
+// |SSL_R_WRONG_VERSION_ON_EARLY_DATA|.
+
+// SSL_CTX_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ctx|.
+OPENSSL_EXPORT void SSL_CTX_set_early_data_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_set_early_data_enabled sets whether early data is allowed to be used
+// with resumptions using |ssl|. See |SSL_CTX_set_early_data_enabled| for more
+// information.
+OPENSSL_EXPORT void SSL_set_early_data_enabled(SSL *ssl, int enabled);
+
+// SSL_in_early_data returns one if |ssl| has a pending handshake that has
+// progressed enough to send or receive early data. Clients may call |SSL_write|
+// to send early data, but |SSL_read| will complete the handshake before
+// accepting application data. Servers may call |SSL_read| to read early data
+// and |SSL_write| to send half-RTT data.
+OPENSSL_EXPORT int SSL_in_early_data(const SSL *ssl);
+
+// SSL_SESSION_early_data_capable returns whether early data would have been
+// attempted with |session| if enabled.
+OPENSSL_EXPORT int SSL_SESSION_early_data_capable(const SSL_SESSION *session);
+
+// SSL_early_data_accepted returns whether early data was accepted on the
+// handshake performed by |ssl|.
+OPENSSL_EXPORT int SSL_early_data_accepted(const SSL *ssl);
+
+// SSL_reset_early_data_reject resets |ssl| after an early data reject. All
+// 0-RTT state is discarded, including any pending |SSL_write| calls. The caller
+// should treat |ssl| as a logically fresh connection, usually by driving the
+// handshake to completion using |SSL_do_handshake|.
+//
+// It is an error to call this function on an |SSL| object that is not signaling
+// |SSL_ERROR_EARLY_DATA_REJECTED|.
+OPENSSL_EXPORT void SSL_reset_early_data_reject(SSL *ssl);
+
+// SSL_get_ticket_age_skew returns the difference, in seconds, between the
+// client-sent ticket age and the server-computed value in TLS 1.3 server
+// connections which resumed a session.
+OPENSSL_EXPORT int32_t SSL_get_ticket_age_skew(const SSL *ssl);
+
+// An ssl_early_data_reason_t describes why 0-RTT was accepted or rejected.
+// These values are persisted to logs. Entries should not be renumbered and
+// numeric values should never be reused.
+enum ssl_early_data_reason_t BORINGSSL_ENUM_INT {
+  // The handshake has not progressed far enough for the 0-RTT status to be
+  // known.
+  ssl_early_data_unknown = 0,
+  // 0-RTT is disabled for this connection.
+  ssl_early_data_disabled = 1,
+  // 0-RTT was accepted.
+  ssl_early_data_accepted = 2,
+  // The negotiated protocol version does not support 0-RTT.
+  ssl_early_data_protocol_version = 3,
+  // The peer declined to offer or accept 0-RTT for an unknown reason.
+  ssl_early_data_peer_declined = 4,
+  // The client did not offer a session.
+  ssl_early_data_no_session_offered = 5,
+  // The server declined to resume the session.
+  ssl_early_data_session_not_resumed = 6,
+  // The session does not support 0-RTT.
+  ssl_early_data_unsupported_for_session = 7,
+  // The server sent a HelloRetryRequest.
+  ssl_early_data_hello_retry_request = 8,
+  // The negotiated ALPN protocol did not match the session.
+  ssl_early_data_alpn_mismatch = 9,
+  // The connection negotiated Channel ID, which is incompatible with 0-RTT.
+  ssl_early_data_channel_id = 10,
+  // The connection negotiated token binding, which is incompatible with 0-RTT.
+  ssl_early_data_token_binding = 11,
+  // The client and server ticket age were too far apart.
+  ssl_early_data_ticket_age_skew = 12,
+  // The value of the largest entry.
+  ssl_early_data_reason_max_value = ssl_early_data_ticket_age_skew,
+};
+
+// SSL_get_early_data_reason returns details why 0-RTT was accepted or rejected
+// on |ssl|. This is primarily useful on the server.
+OPENSSL_EXPORT enum ssl_early_data_reason_t SSL_get_early_data_reason(
+    const SSL *ssl);
+
+
+// Alerts.
+//
+// TLS uses alerts to signal error conditions. Alerts have a type (warning or
+// fatal) and description. OpenSSL internally handles fatal alerts with
+// dedicated error codes (see |SSL_AD_REASON_OFFSET|). Except for close_notify,
+// warning alerts are silently ignored and may only be surfaced with
+// |SSL_CTX_set_info_callback|.
+
+// SSL_AD_REASON_OFFSET is the offset between error reasons and |SSL_AD_*|
+// values. Any error code under |ERR_LIB_SSL| with an error reason above this
+// value corresponds to an alert description. Consumers may add or subtract
+// |SSL_AD_REASON_OFFSET| to convert between them.
+//
+// make_errors.go reserves error codes above 1000 for manually-assigned errors.
+// This value must be kept in sync with reservedReasonCode in make_errors.h
+#define SSL_AD_REASON_OFFSET 1000
+
+// SSL_AD_* are alert descriptions.
+#define SSL_AD_CLOSE_NOTIFY SSL3_AD_CLOSE_NOTIFY
+#define SSL_AD_UNEXPECTED_MESSAGE SSL3_AD_UNEXPECTED_MESSAGE
+#define SSL_AD_BAD_RECORD_MAC SSL3_AD_BAD_RECORD_MAC
+#define SSL_AD_DECRYPTION_FAILED TLS1_AD_DECRYPTION_FAILED
+#define SSL_AD_RECORD_OVERFLOW TLS1_AD_RECORD_OVERFLOW
+#define SSL_AD_DECOMPRESSION_FAILURE SSL3_AD_DECOMPRESSION_FAILURE
+#define SSL_AD_HANDSHAKE_FAILURE SSL3_AD_HANDSHAKE_FAILURE
+#define SSL_AD_NO_CERTIFICATE SSL3_AD_NO_CERTIFICATE  // Legacy SSL 3.0 value
+#define SSL_AD_BAD_CERTIFICATE SSL3_AD_BAD_CERTIFICATE
+#define SSL_AD_UNSUPPORTED_CERTIFICATE SSL3_AD_UNSUPPORTED_CERTIFICATE
+#define SSL_AD_CERTIFICATE_REVOKED SSL3_AD_CERTIFICATE_REVOKED
+#define SSL_AD_CERTIFICATE_EXPIRED SSL3_AD_CERTIFICATE_EXPIRED
+#define SSL_AD_CERTIFICATE_UNKNOWN SSL3_AD_CERTIFICATE_UNKNOWN
+#define SSL_AD_ILLEGAL_PARAMETER SSL3_AD_ILLEGAL_PARAMETER
+#define SSL_AD_UNKNOWN_CA TLS1_AD_UNKNOWN_CA
+#define SSL_AD_ACCESS_DENIED TLS1_AD_ACCESS_DENIED
+#define SSL_AD_DECODE_ERROR TLS1_AD_DECODE_ERROR
+#define SSL_AD_DECRYPT_ERROR TLS1_AD_DECRYPT_ERROR
+#define SSL_AD_EXPORT_RESTRICTION TLS1_AD_EXPORT_RESTRICTION
+#define SSL_AD_PROTOCOL_VERSION TLS1_AD_PROTOCOL_VERSION
+#define SSL_AD_INSUFFICIENT_SECURITY TLS1_AD_INSUFFICIENT_SECURITY
+#define SSL_AD_INTERNAL_ERROR TLS1_AD_INTERNAL_ERROR
+#define SSL_AD_INAPPROPRIATE_FALLBACK SSL3_AD_INAPPROPRIATE_FALLBACK
+#define SSL_AD_USER_CANCELLED TLS1_AD_USER_CANCELLED
+#define SSL_AD_NO_RENEGOTIATION TLS1_AD_NO_RENEGOTIATION
+#define SSL_AD_MISSING_EXTENSION TLS1_AD_MISSING_EXTENSION
+#define SSL_AD_UNSUPPORTED_EXTENSION TLS1_AD_UNSUPPORTED_EXTENSION
+#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
+#define SSL_AD_UNRECOGNIZED_NAME TLS1_AD_UNRECOGNIZED_NAME
+#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE \
+  TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
+#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
+#define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY
+#define SSL_AD_CERTIFICATE_REQUIRED TLS1_AD_CERTIFICATE_REQUIRED
+
+// SSL_alert_type_string_long returns a string description of |value| as an
+// alert type (warning or fatal).
+OPENSSL_EXPORT const char *SSL_alert_type_string_long(int value);
+
+// SSL_alert_desc_string_long returns a string description of |value| as an
+// alert description or "unknown" if unknown.
+OPENSSL_EXPORT const char *SSL_alert_desc_string_long(int value);
+
+// SSL_send_fatal_alert sends a fatal alert over |ssl| of the specified type,
+// which should be one of the |SSL_AD_*| constants. It returns one on success
+// and <= 0 on error. The caller should pass the return value into
+// |SSL_get_error| to determine how to proceed. Once this function has been
+// called, future calls to |SSL_write| will fail.
+//
+// If retrying a failed operation due to |SSL_ERROR_WANT_WRITE|, subsequent
+// calls must use the same |alert| parameter.
+OPENSSL_EXPORT int SSL_send_fatal_alert(SSL *ssl, uint8_t alert);
+
+
+// ex_data functions.
+//
+// See |ex_data.h| for details.
+
+OPENSSL_EXPORT int SSL_set_ex_data(SSL *ssl, int idx, void *data);
+OPENSSL_EXPORT void *SSL_get_ex_data(const SSL *ssl, int idx);
+OPENSSL_EXPORT int SSL_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_unused *unused,
+                                        CRYPTO_EX_dup *dup_unused,
+                                        CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx,
+                                           void *data);
+OPENSSL_EXPORT void *SSL_SESSION_get_ex_data(const SSL_SESSION *session,
+                                             int idx);
+OPENSSL_EXPORT int SSL_SESSION_get_ex_new_index(long argl, void *argp,
+                                                CRYPTO_EX_unused *unused,
+                                                CRYPTO_EX_dup *dup_unused,
+                                                CRYPTO_EX_free *free_func);
+
+OPENSSL_EXPORT int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *data);
+OPENSSL_EXPORT void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx);
+OPENSSL_EXPORT int SSL_CTX_get_ex_new_index(long argl, void *argp,
+                                            CRYPTO_EX_unused *unused,
+                                            CRYPTO_EX_dup *dup_unused,
+                                            CRYPTO_EX_free *free_func);
+
+
+// Low-level record-layer state.
+
+// SSL_get_ivs sets |*out_iv_len| to the length of the IVs for the ciphers
+// underlying |ssl| and sets |*out_read_iv| and |*out_write_iv| to point to the
+// current IVs for the read and write directions. This is only meaningful for
+// connections with implicit IVs (i.e. CBC mode with TLS 1.0).
+//
+// It returns one on success or zero on error.
+OPENSSL_EXPORT int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
+                               const uint8_t **out_write_iv,
+                               size_t *out_iv_len);
+
+// SSL_get_key_block_len returns the length of |ssl|'s key block.
+OPENSSL_EXPORT size_t SSL_get_key_block_len(const SSL *ssl);
+
+// SSL_generate_key_block generates |out_len| bytes of key material for |ssl|'s
+// current connection state.
+OPENSSL_EXPORT int SSL_generate_key_block(const SSL *ssl, uint8_t *out,
+                                          size_t out_len);
+
+// SSL_get_read_sequence returns, in TLS, the expected sequence number of the
+// next incoming record in the current epoch. In DTLS, it returns the maximum
+// sequence number received in the current epoch and includes the epoch number
+// in the two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_read_sequence(const SSL *ssl);
+
+// SSL_get_write_sequence returns the sequence number of the next outgoing
+// record in the current epoch. In DTLS, it includes the epoch number in the
+// two most significant bytes.
+OPENSSL_EXPORT uint64_t SSL_get_write_sequence(const SSL *ssl);
+
+
+// Obscure functions.
+
+// SSL_CTX_set_msg_callback installs |cb| as the message callback for |ctx|.
+// This callback will be called when sending or receiving low-level record
+// headers, complete handshake messages, ChangeCipherSpec, and alerts.
+// |write_p| is one for outgoing messages and zero for incoming messages.
+//
+// For each record header, |cb| is called with |version| = 0 and |content_type|
+// = |SSL3_RT_HEADER|. The |len| bytes from |buf| contain the header. Note that
+// this does not include the record body. If the record is sealed, the length
+// in the header is the length of the ciphertext.
+//
+// For each handshake message, ChangeCipherSpec, and alert, |version| is the
+// protocol version and |content_type| is the corresponding record type. The
+// |len| bytes from |buf| contain the handshake message, one-byte
+// ChangeCipherSpec body, and two-byte alert, respectively.
+//
+// For a V2ClientHello, |version| is |SSL2_VERSION|, |content_type| is zero, and
+// the |len| bytes from |buf| contain the V2ClientHello structure.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback(
+    SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type,
+                             const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_CTX_set_msg_callback_arg sets the |arg| parameter of the message
+// callback.
+OPENSSL_EXPORT void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg);
+
+// SSL_set_msg_callback installs |cb| as the message callback of |ssl|. See
+// |SSL_CTX_set_msg_callback| for when this callback is called.
+OPENSSL_EXPORT void SSL_set_msg_callback(
+    SSL *ssl, void (*cb)(int write_p, int version, int content_type,
+                         const void *buf, size_t len, SSL *ssl, void *arg));
+
+// SSL_set_msg_callback_arg sets the |arg| parameter of the message callback.
+OPENSSL_EXPORT void SSL_set_msg_callback_arg(SSL *ssl, void *arg);
+
+// SSL_CTX_set_keylog_callback configures a callback to log key material. This
+// is intended for debugging use with tools like Wireshark. The |cb| function
+// should log |line| followed by a newline, synchronizing with any concurrent
+// access to the log.
+//
+// The format is described in
+// https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/Key_Log_Format.
+OPENSSL_EXPORT void SSL_CTX_set_keylog_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, const char *line));
+
+// SSL_CTX_get_keylog_callback returns the callback configured by
+// |SSL_CTX_set_keylog_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(
+    const SSL *ssl, const char *line);
+
+// SSL_CTX_set_current_time_cb configures a callback to retrieve the current
+// time, which should be set in |*out_clock|. This can be used for testing
+// purposes; for example, a callback can be configured that returns a time
+// set explicitly by the test. The |ssl| pointer passed to |cb| is always null.
+OPENSSL_EXPORT void SSL_CTX_set_current_time_cb(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, struct timeval *out_clock));
+
+// SSL_set_shed_handshake_config allows some of the configuration of |ssl| to be
+// freed after its handshake completes.  Once configuration has been shed, APIs
+// that query it may fail.  "Configuration" in this context means anything that
+// was set by the caller, as distinct from information derived from the
+// handshake.  For example, |SSL_get_ciphers| queries how the |SSL| was
+// configured by the caller, and fails after configuration has been shed,
+// whereas |SSL_get_cipher| queries the result of the handshake, and is
+// unaffected by configuration shedding.
+//
+// If configuration shedding is enabled, it is an error to call |SSL_clear|.
+//
+// Note that configuration shedding as a client additionally depends on
+// renegotiation being disabled (see |SSL_set_renegotiate_mode|). If
+// renegotiation is possible, the configuration will be retained. If
+// configuration shedding is enabled and renegotiation later disabled after the
+// handshake, |SSL_set_renegotiate_mode| will shed configuration then. This may
+// be useful for clients which support renegotiation with some ALPN protocols,
+// such as HTTP/1.1, and not others, such as HTTP/2.
+OPENSSL_EXPORT void SSL_set_shed_handshake_config(SSL *ssl, int enable);
+
+enum ssl_renegotiate_mode_t BORINGSSL_ENUM_INT {
+  ssl_renegotiate_never = 0,
+  ssl_renegotiate_once,
+  ssl_renegotiate_freely,
+  ssl_renegotiate_ignore,
+  ssl_renegotiate_explicit,
+};
+
+// SSL_set_renegotiate_mode configures how |ssl|, a client, reacts to
+// renegotiation attempts by a server. If |ssl| is a server, peer-initiated
+// renegotiations are *always* rejected and this function does nothing.
+//
+// The renegotiation mode defaults to |ssl_renegotiate_never|, but may be set
+// at any point in a connection's lifetime. Set it to |ssl_renegotiate_once| to
+// allow one renegotiation, |ssl_renegotiate_freely| to allow all
+// renegotiations or |ssl_renegotiate_ignore| to ignore HelloRequest messages.
+// Note that ignoring HelloRequest messages may cause the connection to stall
+// if the server waits for the renegotiation to complete.
+//
+// If set to |ssl_renegotiate_explicit|, |SSL_read| and |SSL_peek| calls which
+// encounter a HelloRequest will pause with |SSL_ERROR_WANT_RENEGOTIATE|.
+// |SSL_write| will continue to work while paused. The caller may call
+// |SSL_renegotiate| to begin the renegotiation at a later point. This mode may
+// be used if callers wish to eagerly call |SSL_peek| without triggering a
+// renegotiation.
+//
+// If configuration shedding is enabled (see |SSL_set_shed_handshake_config|),
+// configuration is released if, at any point after the handshake, renegotiation
+// is disabled. It is not possible to switch from disabling renegotiation to
+// enabling it on a given connection. Callers that condition renegotiation on,
+// e.g., ALPN must enable renegotiation before the handshake and conditionally
+// disable it afterwards.
+//
+// There is no support in BoringSSL for initiating renegotiations as a client
+// or server.
+OPENSSL_EXPORT void SSL_set_renegotiate_mode(SSL *ssl,
+                                             enum ssl_renegotiate_mode_t mode);
+
+// SSL_renegotiate starts a deferred renegotiation on |ssl| if it was configured
+// with |ssl_renegotiate_explicit| and has a pending HelloRequest. It returns
+// one on success and zero on error.
+//
+// This function does not do perform any I/O. On success, a subsequent
+// |SSL_do_handshake| call will run the handshake. |SSL_write| and
+// |SSL_read| will also complete the handshake before sending or receiving
+// application data.
+OPENSSL_EXPORT int SSL_renegotiate(SSL *ssl);
+
+// SSL_renegotiate_pending returns one if |ssl| is in the middle of a
+// renegotiation.
+OPENSSL_EXPORT int SSL_renegotiate_pending(SSL *ssl);
+
+// SSL_total_renegotiations returns the total number of renegotiation handshakes
+// performed by |ssl|. This includes the pending renegotiation, if any.
+OPENSSL_EXPORT int SSL_total_renegotiations(const SSL *ssl);
+
+// SSL_MAX_CERT_LIST_DEFAULT is the default maximum length, in bytes, of a peer
+// certificate chain.
+#define SSL_MAX_CERT_LIST_DEFAULT (1024 * 100)
+
+// SSL_CTX_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ctx|.
+OPENSSL_EXPORT size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx);
+
+// SSL_CTX_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_CTX_set_max_cert_list(SSL_CTX *ctx,
+                                              size_t max_cert_list);
+
+// SSL_get_max_cert_list returns the maximum length, in bytes, of a peer
+// certificate chain accepted by |ssl|.
+OPENSSL_EXPORT size_t SSL_get_max_cert_list(const SSL *ssl);
+
+// SSL_set_max_cert_list sets the maximum length, in bytes, of a peer
+// certificate chain to |max_cert_list|. This affects how much memory may be
+// consumed during the handshake.
+OPENSSL_EXPORT void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list);
+
+// SSL_CTX_set_max_send_fragment sets the maximum length, in bytes, of records
+// sent by |ctx|. Beyond this length, handshake messages and application data
+// will be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx,
+                                                 size_t max_send_fragment);
+
+// SSL_set_max_send_fragment sets the maximum length, in bytes, of records sent
+// by |ssl|. Beyond this length, handshake messages and application data will
+// be split into multiple records. It returns one on success or zero on
+// error.
+OPENSSL_EXPORT int SSL_set_max_send_fragment(SSL *ssl,
+                                             size_t max_send_fragment);
+
+// ssl_early_callback_ctx (aka |SSL_CLIENT_HELLO|) is passed to certain
+// callbacks that are called very early on during the server handshake. At this
+// point, much of the SSL* hasn't been filled out and only the ClientHello can
+// be depended on.
+typedef struct ssl_early_callback_ctx {
+  SSL *ssl;
+  const uint8_t *client_hello;
+  size_t client_hello_len;
+  uint16_t version;
+  const uint8_t *random;
+  size_t random_len;
+  const uint8_t *session_id;
+  size_t session_id_len;
+  const uint8_t *cipher_suites;
+  size_t cipher_suites_len;
+  const uint8_t *compression_methods;
+  size_t compression_methods_len;
+  const uint8_t *extensions;
+  size_t extensions_len;
+} SSL_CLIENT_HELLO;
+
+// ssl_select_cert_result_t enumerates the possible results from selecting a
+// certificate with |select_certificate_cb|.
+enum ssl_select_cert_result_t BORINGSSL_ENUM_INT {
+  // ssl_select_cert_success indicates that the certificate selection was
+  // successful.
+  ssl_select_cert_success = 1,
+  // ssl_select_cert_retry indicates that the operation could not be
+  // immediately completed and must be reattempted at a later point.
+  ssl_select_cert_retry = 0,
+  // ssl_select_cert_error indicates that a fatal error occured and the
+  // handshake should be terminated.
+  ssl_select_cert_error = -1,
+};
+
+// SSL_early_callback_ctx_extension_get searches the extensions in
+// |client_hello| for an extension of the given type. If not found, it returns
+// zero. Otherwise it sets |out_data| to point to the extension contents (not
+// including the type and length bytes), sets |out_len| to the length of the
+// extension contents and returns one.
+OPENSSL_EXPORT int SSL_early_callback_ctx_extension_get(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t extension_type,
+    const uint8_t **out_data, size_t *out_len);
+
+// SSL_CTX_set_select_certificate_cb sets a callback that is called before most
+// ClientHello processing and before the decision whether to resume a session
+// is made. The callback may inspect the ClientHello and configure the
+// connection. See |ssl_select_cert_result_t| for details of the return values.
+//
+// In the case that a retry is indicated, |SSL_get_error| will return
+// |SSL_ERROR_PENDING_CERTIFICATE| and the caller should arrange for the
+// high-level operation on |ssl| to be retried at a later time, which will
+// result in another call to |cb|.
+//
+// |SSL_get_servername| may be used during this callback.
+//
+// Note: The |SSL_CLIENT_HELLO| is only valid for the duration of the callback
+// and is not valid while the handshake is paused.
+OPENSSL_EXPORT void SSL_CTX_set_select_certificate_cb(
+    SSL_CTX *ctx,
+    enum ssl_select_cert_result_t (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_dos_protection_cb sets a callback that is called once the
+// resumption decision for a ClientHello has been made. It can return one to
+// allow the handshake to continue or zero to cause the handshake to abort.
+OPENSSL_EXPORT void SSL_CTX_set_dos_protection_cb(
+    SSL_CTX *ctx, int (*cb)(const SSL_CLIENT_HELLO *));
+
+// SSL_CTX_set_reverify_on_resume configures whether the certificate
+// verification callback will be used to reverify stored certificates
+// when resuming a session. This only works with |SSL_CTX_set_custom_verify|.
+// For now, this is incompatible with |SSL_VERIFY_NONE| mode, and is only
+// respected on clients.
+OPENSSL_EXPORT void SSL_CTX_set_reverify_on_resume(SSL_CTX *ctx, int enabled);
+
+// SSL_set_enforce_rsa_key_usage configures whether the keyUsage extension of
+// RSA leaf certificates will be checked for consistency with the TLS
+// usage. This parameter may be set late; it will not be read until after the
+// certificate verification callback.
+OPENSSL_EXPORT void SSL_set_enforce_rsa_key_usage(SSL *ssl, int enabled);
+
+// SSL_ST_* are possible values for |SSL_state|, the bitmasks that make them up,
+// and some historical values for compatibility. Only |SSL_ST_INIT| and
+// |SSL_ST_OK| are ever returned.
+#define SSL_ST_CONNECT 0x1000
+#define SSL_ST_ACCEPT 0x2000
+#define SSL_ST_MASK 0x0FFF
+#define SSL_ST_INIT (SSL_ST_CONNECT | SSL_ST_ACCEPT)
+#define SSL_ST_OK 0x03
+#define SSL_ST_RENEGOTIATE (0x04 | SSL_ST_INIT)
+#define SSL_ST_BEFORE (0x05 | SSL_ST_INIT)
+
+// TLS_ST_* are aliases for |SSL_ST_*| for OpenSSL 1.1.0 compatibility.
+#define TLS_ST_OK SSL_ST_OK
+#define TLS_ST_BEFORE SSL_ST_BEFORE
+
+// SSL_CB_* are possible values for the |type| parameter in the info
+// callback and the bitmasks that make them up.
+#define SSL_CB_LOOP 0x01
+#define SSL_CB_EXIT 0x02
+#define SSL_CB_READ 0x04
+#define SSL_CB_WRITE 0x08
+#define SSL_CB_ALERT 0x4000
+#define SSL_CB_READ_ALERT (SSL_CB_ALERT | SSL_CB_READ)
+#define SSL_CB_WRITE_ALERT (SSL_CB_ALERT | SSL_CB_WRITE)
+#define SSL_CB_ACCEPT_LOOP (SSL_ST_ACCEPT | SSL_CB_LOOP)
+#define SSL_CB_ACCEPT_EXIT (SSL_ST_ACCEPT | SSL_CB_EXIT)
+#define SSL_CB_CONNECT_LOOP (SSL_ST_CONNECT | SSL_CB_LOOP)
+#define SSL_CB_CONNECT_EXIT (SSL_ST_CONNECT | SSL_CB_EXIT)
+#define SSL_CB_HANDSHAKE_START 0x10
+#define SSL_CB_HANDSHAKE_DONE 0x20
+
+// SSL_CTX_set_info_callback configures a callback to be run when various
+// events occur during a connection's lifetime. The |type| argument determines
+// the type of event and the meaning of the |value| argument. Callbacks must
+// ignore unexpected |type| values.
+//
+// |SSL_CB_READ_ALERT| is signaled for each alert received, warning or fatal.
+// The |value| argument is a 16-bit value where the alert level (either
+// |SSL3_AL_WARNING| or |SSL3_AL_FATAL|) is in the most-significant eight bits
+// and the alert type (one of |SSL_AD_*|) is in the least-significant eight.
+//
+// |SSL_CB_WRITE_ALERT| is signaled for each alert sent. The |value| argument
+// is constructed as with |SSL_CB_READ_ALERT|.
+//
+// |SSL_CB_HANDSHAKE_START| is signaled when a handshake begins. The |value|
+// argument is always one.
+//
+// |SSL_CB_HANDSHAKE_DONE| is signaled when a handshake completes successfully.
+// The |value| argument is always one. If a handshake False Starts, this event
+// may be used to determine when the Finished message is received.
+//
+// The following event types expose implementation details of the handshake
+// state machine. Consuming them is deprecated.
+//
+// |SSL_CB_ACCEPT_LOOP| (respectively, |SSL_CB_CONNECT_LOOP|) is signaled when
+// a server (respectively, client) handshake progresses. The |value| argument
+// is always one.
+//
+// |SSL_CB_ACCEPT_EXIT| (respectively, |SSL_CB_CONNECT_EXIT|) is signaled when
+// a server (respectively, client) handshake completes, fails, or is paused.
+// The |value| argument is one if the handshake succeeded and <= 0
+// otherwise.
+OPENSSL_EXPORT void SSL_CTX_set_info_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_CTX_get_info_callback returns the callback set by
+// |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,
+                                                               int type,
+                                                               int value);
+
+// SSL_set_info_callback configures a callback to be run at various events
+// during a connection's lifetime. See |SSL_CTX_set_info_callback|.
+OPENSSL_EXPORT void SSL_set_info_callback(
+    SSL *ssl, void (*cb)(const SSL *ssl, int type, int value));
+
+// SSL_get_info_callback returns the callback set by |SSL_set_info_callback|.
+OPENSSL_EXPORT void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,
+                                                             int type,
+                                                             int value);
+
+// SSL_state_string_long returns the current state of the handshake state
+// machine as a string. This may be useful for debugging and logging.
+OPENSSL_EXPORT const char *SSL_state_string_long(const SSL *ssl);
+
+#define SSL_SENT_SHUTDOWN 1
+#define SSL_RECEIVED_SHUTDOWN 2
+
+// SSL_get_shutdown returns a bitmask with a subset of |SSL_SENT_SHUTDOWN| and
+// |SSL_RECEIVED_SHUTDOWN| to query whether close_notify was sent or received,
+// respectively.
+OPENSSL_EXPORT int SSL_get_shutdown(const SSL *ssl);
+
+// SSL_get_peer_signature_algorithm returns the signature algorithm used by the
+// peer. If not applicable, it returns zero.
+OPENSSL_EXPORT uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl);
+
+// SSL_get_client_random writes up to |max_out| bytes of the most recent
+// handshake's client_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the client_random.
+OPENSSL_EXPORT size_t SSL_get_client_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_server_random writes up to |max_out| bytes of the most recent
+// handshake's server_random to |out| and returns the number of bytes written.
+// If |max_out| is zero, it returns the size of the server_random.
+OPENSSL_EXPORT size_t SSL_get_server_random(const SSL *ssl, uint8_t *out,
+                                            size_t max_out);
+
+// SSL_get_pending_cipher returns the cipher suite for the current handshake or
+// NULL if one has not been negotiated yet or there is no pending handshake.
+OPENSSL_EXPORT const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl);
+
+// SSL_set_retain_only_sha256_of_client_certs, on a server, sets whether only
+// the SHA-256 hash of peer's certificate should be saved in memory and in the
+// session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_set_retain_only_sha256_of_client_certs(SSL *ssl,
+                                                               int enable);
+
+// SSL_CTX_set_retain_only_sha256_of_client_certs, on a server, sets whether
+// only the SHA-256 hash of peer's certificate should be saved in memory and in
+// the session. This can save memory, ticket size and session cache space. If
+// enabled, |SSL_get_peer_certificate| will return NULL after the handshake
+// completes. See |SSL_SESSION_has_peer_sha256| and
+// |SSL_SESSION_get0_peer_sha256| to query the hash.
+OPENSSL_EXPORT void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx,
+                                                                   int enable);
+
+// SSL_CTX_set_grease_enabled configures whether sockets on |ctx| should enable
+// GREASE. See draft-davidben-tls-grease-01.
+OPENSSL_EXPORT void SSL_CTX_set_grease_enabled(SSL_CTX *ctx, int enabled);
+
+// SSL_max_seal_overhead returns the maximum overhead, in bytes, of sealing a
+// record with |ssl|.
+OPENSSL_EXPORT size_t SSL_max_seal_overhead(const SSL *ssl);
+
+// SSL_CTX_set_false_start_allowed_without_alpn configures whether connections
+// on |ctx| may use False Start (if |SSL_MODE_ENABLE_FALSE_START| is enabled)
+// without negotiating ALPN.
+OPENSSL_EXPORT void SSL_CTX_set_false_start_allowed_without_alpn(SSL_CTX *ctx,
+                                                                 int allowed);
+
+// SSL_CTX_set_ignore_tls13_downgrade configures whether connections on |ctx|
+// ignore the downgrade signal in the server's random value.
+OPENSSL_EXPORT void SSL_CTX_set_ignore_tls13_downgrade(SSL_CTX *ctx,
+                                                       int ignore);
+
+// SSL_set_ignore_tls13_downgrade configures whether |ssl| ignores the downgrade
+// signal in the server's random value.
+OPENSSL_EXPORT void SSL_set_ignore_tls13_downgrade(SSL *ssl, int ignore);
+
+// SSL_is_tls13_downgrade returns one if the TLS 1.3 anti-downgrade
+// mechanism would have aborted |ssl|'s handshake and zero otherwise.
+OPENSSL_EXPORT int SSL_is_tls13_downgrade(const SSL *ssl);
+
+// SSL_used_hello_retry_request returns one if the TLS 1.3 HelloRetryRequest
+// message has been either sent by the server or received by the client. It
+// returns zero otherwise.
+OPENSSL_EXPORT int SSL_used_hello_retry_request(const SSL *ssl);
+
+// SSL_set_jdk11_workaround configures whether to workaround various bugs in
+// JDK 11's TLS 1.3 implementation by disabling TLS 1.3 for such clients.
+//
+// https://bugs.openjdk.java.net/browse/JDK-8211806
+// https://bugs.openjdk.java.net/browse/JDK-8212885
+// https://bugs.openjdk.java.net/browse/JDK-8213202
+OPENSSL_EXPORT void SSL_set_jdk11_workaround(SSL *ssl, int enable);
+
+
+// Deprecated functions.
+
+// SSL_library_init calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int SSL_library_init(void);
+
+// SSL_CIPHER_description writes a description of |cipher| into |buf| and
+// returns |buf|. If |buf| is NULL, it returns a newly allocated string, to be
+// freed with |OPENSSL_free|, or NULL on error.
+//
+// The description includes a trailing newline and has the form:
+// AES128-SHA              Kx=RSA      Au=RSA  Enc=AES(128)  Mac=SHA1
+//
+// Consider |SSL_CIPHER_standard_name| or |SSL_CIPHER_get_name| instead.
+OPENSSL_EXPORT const char *SSL_CIPHER_description(const SSL_CIPHER *cipher,
+                                                  char *buf, int len);
+
+// SSL_CIPHER_get_version returns the string "TLSv1/SSLv3".
+OPENSSL_EXPORT const char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher);
+
+// SSL_CIPHER_get_rfc_name returns a newly-allocated string containing the
+// result of |SSL_CIPHER_standard_name| or NULL on error. The caller is
+// responsible for calling |OPENSSL_free| on the result.
+//
+// Use |SSL_CIPHER_standard_name| instead.
+OPENSSL_EXPORT char *SSL_CIPHER_get_rfc_name(const SSL_CIPHER *cipher);
+
+typedef void COMP_METHOD;
+typedef struct ssl_comp_st SSL_COMP;
+
+// SSL_COMP_get_compression_methods returns NULL.
+OPENSSL_EXPORT STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
+
+// SSL_COMP_add_compression_method returns one.
+OPENSSL_EXPORT int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm);
+
+// SSL_COMP_get_name returns NULL.
+OPENSSL_EXPORT const char *SSL_COMP_get_name(const COMP_METHOD *comp);
+
+// SSL_COMP_get0_name returns the |name| member of |comp|.
+OPENSSL_EXPORT const char *SSL_COMP_get0_name(const SSL_COMP *comp);
+
+// SSL_COMP_get_id returns the |id| member of |comp|.
+OPENSSL_EXPORT int SSL_COMP_get_id(const SSL_COMP *comp);
+
+// SSL_COMP_free_compression_methods does nothing.
+OPENSSL_EXPORT void SSL_COMP_free_compression_methods(void);
+
+// SSLv23_method calls |TLS_method|.
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_method(void);
+
+// These version-specific methods behave exactly like |TLS_method| and
+// |DTLS_method| except they also call |SSL_CTX_set_min_proto_version| and
+// |SSL_CTX_set_max_proto_version| to lock connections to that protocol
+// version.
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_method(void);
+
+// These client- and server-specific methods call their corresponding generic
+// methods.
+OPENSSL_EXPORT const SSL_METHOD *TLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *SSLv23_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *TLSv1_2_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLS_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_client_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_server_method(void);
+OPENSSL_EXPORT const SSL_METHOD *DTLSv1_2_client_method(void);
+
+// SSL_clear resets |ssl| to allow another connection and returns one on success
+// or zero on failure. It returns most configuration state but releases memory
+// associated with the current connection.
+//
+// Free |ssl| and create a new one instead.
+OPENSSL_EXPORT int SSL_clear(SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_rsa_callback(
+    SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_rsa_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_rsa_callback(SSL *ssl,
+                                             RSA *(*cb)(SSL *ssl, int is_export,
+                                                        int keylength));
+
+// SSL_CTX_sess_connect returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_connect_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_renegotiate returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_accept_good returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_accept_good(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cb_hits returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_misses returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_misses(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_timeouts returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_timeouts(const SSL_CTX *ctx);
+
+// SSL_CTX_sess_cache_full returns zero.
+OPENSSL_EXPORT int SSL_CTX_sess_cache_full(const SSL_CTX *ctx);
+
+// SSL_cutthrough_complete calls |SSL_in_false_start|.
+OPENSSL_EXPORT int SSL_cutthrough_complete(const SSL *ssl);
+
+// SSL_num_renegotiations calls |SSL_total_renegotiations|.
+OPENSSL_EXPORT int SSL_num_renegotiations(const SSL *ssl);
+
+// SSL_CTX_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx);
+
+// SSL_need_tmp_RSA returns zero.
+OPENSSL_EXPORT int SSL_need_tmp_RSA(const SSL *ssl);
+
+// SSL_CTX_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa);
+
+// SSL_set_tmp_rsa returns one.
+OPENSSL_EXPORT int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa);
+
+// SSL_CTX_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_CTX_get_read_ahead(const SSL_CTX *ctx);
+
+// SSL_CTX_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes);
+
+// SSL_get_read_ahead returns zero.
+OPENSSL_EXPORT int SSL_get_read_ahead(const SSL *ssl);
+
+// SSL_set_read_ahead returns one.
+OPENSSL_EXPORT int SSL_set_read_ahead(SSL *ssl, int yes);
+
+// SSL_set_state does nothing.
+OPENSSL_EXPORT void SSL_set_state(SSL *ssl, int state);
+
+// SSL_get_shared_ciphers writes an empty string to |buf| and returns a
+// pointer to |buf|, or NULL if |len| is less than or equal to zero.
+OPENSSL_EXPORT char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len);
+
+// SSL_get_shared_sigalgs returns zero.
+OPENSSL_EXPORT int SSL_get_shared_sigalgs(SSL *ssl, int idx, int *psign,
+                                          int *phash, int *psignandhash,
+                                          uint8_t *rsig, uint8_t *rhash);
+
+// SSL_MODE_HANDSHAKE_CUTTHROUGH is the same as SSL_MODE_ENABLE_FALSE_START.
+#define SSL_MODE_HANDSHAKE_CUTTHROUGH SSL_MODE_ENABLE_FALSE_START
+
+// i2d_SSL_SESSION serializes |in| to the bytes pointed to by |*pp|. On success,
+// it returns the number of bytes written and advances |*pp| by that many bytes.
+// On failure, it returns -1. If |pp| is NULL, no bytes are written and only the
+// length is returned.
+//
+// Use |SSL_SESSION_to_bytes| instead.
+OPENSSL_EXPORT int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp);
+
+// d2i_SSL_SESSION parses a serialized session from the |length| bytes pointed
+// to by |*pp|. It returns the new |SSL_SESSION| and advances |*pp| by the
+// number of bytes consumed on success and NULL on failure. The caller takes
+// ownership of the new session and must call |SSL_SESSION_free| when done.
+//
+// If |a| is non-NULL, |*a| is released and set the new |SSL_SESSION|.
+//
+// Use |SSL_SESSION_from_bytes| instead.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp,
+                                            long length);
+
+// i2d_SSL_SESSION_bio serializes |session| and writes the result to |bio|. It
+// returns the number of bytes written on success and <= 0 on error.
+OPENSSL_EXPORT int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session);
+
+// d2i_SSL_SESSION_bio reads a serialized |SSL_SESSION| from |bio| and returns a
+// newly-allocated |SSL_SESSION| or NULL on error. If |out| is not NULL, it also
+// frees |*out| and sets |*out| to the new |SSL_SESSION|.
+OPENSSL_EXPORT SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out);
+
+// ERR_load_SSL_strings does nothing.
+OPENSSL_EXPORT void ERR_load_SSL_strings(void);
+
+// SSL_load_error_strings does nothing.
+OPENSSL_EXPORT void SSL_load_error_strings(void);
+
+// SSL_CTX_set_tlsext_use_srtp calls |SSL_CTX_set_srtp_profiles|. It returns
+// zero on success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_CTX_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx,
+                                               const char *profiles);
+
+// SSL_set_tlsext_use_srtp calls |SSL_set_srtp_profiles|. It returns zero on
+// success and one on failure.
+//
+// WARNING: this function is dangerous because it breaks the usual return value
+// convention. Use |SSL_set_srtp_profiles| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles);
+
+// SSL_get_current_compression returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_compression(SSL *ssl);
+
+// SSL_get_current_expansion returns NULL.
+OPENSSL_EXPORT const COMP_METHOD *SSL_get_current_expansion(SSL *ssl);
+
+// SSL_get_server_tmp_key returns zero.
+OPENSSL_EXPORT int SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key);
+
+// SSL_CTX_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh);
+
+// SSL_set_tmp_dh returns 1.
+OPENSSL_EXPORT int SSL_set_tmp_dh(SSL *ssl, const DH *dh);
+
+// SSL_CTX_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_CTX_set_tmp_dh_callback(
+    SSL_CTX *ctx, DH *(*cb)(SSL *ssl, int is_export, int keylength));
+
+// SSL_set_tmp_dh_callback does nothing.
+OPENSSL_EXPORT void SSL_set_tmp_dh_callback(SSL *ssl,
+                                            DH *(*cb)(SSL *ssl, int is_export,
+                                                      int keylength));
+
+// SSL_CTX_set1_sigalgs takes |num_values| ints and interprets them as pairs
+// where the first is the nid of a hash function and the second is an
+// |EVP_PKEY_*| value. It configures the signature algorithm preferences for
+// |ctx| based on them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs(SSL_CTX *ctx, const int *values,
+                                        size_t num_values);
+
+// SSL_set1_sigalgs takes |num_values| ints and interprets them as pairs where
+// the first is the nid of a hash function and the second is an |EVP_PKEY_*|
+// value. It configures the signature algorithm preferences for |ssl| based on
+// them and returns one on success or zero on error.
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs(SSL *ssl, const int *values,
+                                    size_t num_values);
+
+// SSL_CTX_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ctx|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_CTX_set1_sigalgs_list(SSL_CTX *ctx, const char *str);
+
+// SSL_set1_sigalgs_list takes a textual specification of a set of signature
+// algorithms and configures them on |ssl|. It returns one on success and zero
+// on error. See
+// https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set1_sigalgs_list.html for
+// a description of the text format. Also note that TLS 1.3 names (e.g.
+// "rsa_pkcs1_md5_sha1") can also be used (as in OpenSSL, although OpenSSL
+// doesn't document that).
+//
+// This API is compatible with OpenSSL. However, BoringSSL-specific code should
+// prefer |SSL_CTX_set_signing_algorithm_prefs| because it's clearer and it's
+// more convenient to codesearch for specific algorithm values.
+OPENSSL_EXPORT int SSL_set1_sigalgs_list(SSL *ssl, const char *str);
+
+#define SSL_set_app_data(s, arg) (SSL_set_ex_data(s, 0, (char *)(arg)))
+#define SSL_get_app_data(s) (SSL_get_ex_data(s, 0))
+#define SSL_SESSION_set_app_data(s, a) \
+  (SSL_SESSION_set_ex_data(s, 0, (char *)(a)))
+#define SSL_SESSION_get_app_data(s) (SSL_SESSION_get_ex_data(s, 0))
+#define SSL_CTX_get_app_data(ctx) (SSL_CTX_get_ex_data(ctx, 0))
+#define SSL_CTX_set_app_data(ctx, arg) \
+  (SSL_CTX_set_ex_data(ctx, 0, (char *)(arg)))
+
+#define OpenSSL_add_ssl_algorithms() SSL_library_init()
+#define SSLeay_add_ssl_algorithms() SSL_library_init()
+
+#define SSL_get_cipher(ssl) SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_bits(ssl, out_alg_bits) \
+    SSL_CIPHER_get_bits(SSL_get_current_cipher(ssl), out_alg_bits)
+#define SSL_get_cipher_version(ssl) \
+    SSL_CIPHER_get_version(SSL_get_current_cipher(ssl))
+#define SSL_get_cipher_name(ssl) \
+    SSL_CIPHER_get_name(SSL_get_current_cipher(ssl))
+#define SSL_get_time(session) SSL_SESSION_get_time(session)
+#define SSL_set_time(session, time) SSL_SESSION_set_time((session), (time))
+#define SSL_get_timeout(session) SSL_SESSION_get_timeout(session)
+#define SSL_set_timeout(session, timeout) \
+    SSL_SESSION_set_timeout((session), (timeout))
+
+struct ssl_comp_st {
+  int id;
+  const char *name;
+  char *method;
+};
+
+DEFINE_STACK_OF(SSL_COMP)
+
+// The following flags do nothing and are included only to make it easier to
+// compile code with BoringSSL.
+#define SSL_MODE_AUTO_RETRY 0
+#define SSL_MODE_RELEASE_BUFFERS 0
+#define SSL_MODE_SEND_CLIENTHELLO_TIME 0
+#define SSL_MODE_SEND_SERVERHELLO_TIME 0
+#define SSL_OP_ALL 0
+#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0
+#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 0
+#define SSL_OP_EPHEMERAL_RSA 0
+#define SSL_OP_LEGACY_SERVER_CONNECT 0
+#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER 0
+#define SSL_OP_MICROSOFT_SESS_ID_BUG 0
+#define SSL_OP_MSIE_SSLV2_RSA_PADDING 0
+#define SSL_OP_NETSCAPE_CA_DN_BUG 0
+#define SSL_OP_NETSCAPE_CHALLENGE_BUG 0
+#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0
+#define SSL_OP_NO_COMPRESSION 0
+#define SSL_OP_NO_RENEGOTIATION 0  // ssl_renegotiate_never is the default
+#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0
+#define SSL_OP_NO_SSLv2 0
+#define SSL_OP_NO_SSLv3 0
+#define SSL_OP_PKCS1_CHECK_1 0
+#define SSL_OP_PKCS1_CHECK_2 0
+#define SSL_OP_SINGLE_DH_USE 0
+#define SSL_OP_SINGLE_ECDH_USE 0
+#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG 0
+#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG 0
+#define SSL_OP_TLS_BLOCK_PADDING_BUG 0
+#define SSL_OP_TLS_D5_BUG 0
+#define SSL_OP_TLS_ROLLBACK_BUG 0
+#define SSL_VERIFY_CLIENT_ONCE 0
+
+// SSL_cache_hit calls |SSL_session_reused|.
+OPENSSL_EXPORT int SSL_cache_hit(SSL *ssl);
+
+// SSL_get_default_timeout returns |SSL_DEFAULT_SESSION_TIMEOUT|.
+OPENSSL_EXPORT long SSL_get_default_timeout(const SSL *ssl);
+
+// SSL_get_version returns a string describing the TLS version used by |ssl|.
+// For example, "TLSv1.2" or "DTLSv1".
+OPENSSL_EXPORT const char *SSL_get_version(const SSL *ssl);
+
+// SSL_get_cipher_list returns the name of the |n|th cipher in the output of
+// |SSL_get_ciphers| or NULL if out of range. Use |SSL_get_ciphers| instead.
+OPENSSL_EXPORT const char *SSL_get_cipher_list(const SSL *ssl, int n);
+
+// SSL_CTX_set_client_cert_cb sets a callback which is called on the client if
+// the server requests a client certificate and none is configured. On success,
+// the callback should return one and set |*out_x509| to |*out_pkey| to a leaf
+// certificate and private key, respectively, passing ownership. It should
+// return zero to send no certificate and -1 to fail or pause the handshake. If
+// the handshake is paused, |SSL_get_error| will return
+// |SSL_ERROR_WANT_X509_LOOKUP|.
+//
+// The callback may call |SSL_get0_certificate_types| and
+// |SSL_get_client_CA_list| for information on the server's certificate request.
+//
+// Use |SSL_CTX_set_cert_cb| instead. Configuring intermediate certificates with
+// this function is confusing. This callback may not be registered concurrently
+// with |SSL_CTX_set_cert_cb| or |SSL_set_cert_cb|.
+OPENSSL_EXPORT void SSL_CTX_set_client_cert_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, X509 **out_x509, EVP_PKEY **out_pkey));
+
+#define SSL_NOTHING SSL_ERROR_NONE
+#define SSL_WRITING SSL_ERROR_WANT_WRITE
+#define SSL_READING SSL_ERROR_WANT_READ
+
+// SSL_want returns one of the above values to determine what the most recent
+// operation on |ssl| was blocked on. Use |SSL_get_error| instead.
+OPENSSL_EXPORT int SSL_want(const SSL *ssl);
+
+#define SSL_want_read(ssl) (SSL_want(ssl) == SSL_READING)
+#define SSL_want_write(ssl) (SSL_want(ssl) == SSL_WRITING)
+
+ // SSL_get_finished writes up to |count| bytes of the Finished message sent by
+ // |ssl| to |buf|. It returns the total untruncated length or zero if none has
+ // been sent yet. At TLS 1.3 and later, it returns zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count);
+
+ // SSL_get_peer_finished writes up to |count| bytes of the Finished message
+ // received from |ssl|'s peer to |buf|. It returns the total untruncated length
+ // or zero if none has been received yet. At TLS 1.3 and later, it returns
+ // zero.
+ //
+ // Use |SSL_get_tls_unique| instead.
+OPENSSL_EXPORT size_t SSL_get_peer_finished(const SSL *ssl, void *buf,
+                                            size_t count);
+
+// SSL_alert_type_string returns "!". Use |SSL_alert_type_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_type_string(int value);
+
+// SSL_alert_desc_string returns "!!". Use |SSL_alert_desc_string_long|
+// instead.
+OPENSSL_EXPORT const char *SSL_alert_desc_string(int value);
+
+// SSL_state_string returns "!!!!!!". Use |SSL_state_string_long| for a more
+// intelligible string.
+OPENSSL_EXPORT const char *SSL_state_string(const SSL *ssl);
+
+// SSL_TXT_* expand to strings.
+#define SSL_TXT_MEDIUM "MEDIUM"
+#define SSL_TXT_HIGH "HIGH"
+#define SSL_TXT_FIPS "FIPS"
+#define SSL_TXT_kRSA "kRSA"
+#define SSL_TXT_kDHE "kDHE"
+#define SSL_TXT_kEDH "kEDH"
+#define SSL_TXT_kECDHE "kECDHE"
+#define SSL_TXT_kEECDH "kEECDH"
+#define SSL_TXT_kPSK "kPSK"
+#define SSL_TXT_aRSA "aRSA"
+#define SSL_TXT_aECDSA "aECDSA"
+#define SSL_TXT_aPSK "aPSK"
+#define SSL_TXT_DH "DH"
+#define SSL_TXT_DHE "DHE"
+#define SSL_TXT_EDH "EDH"
+#define SSL_TXT_RSA "RSA"
+#define SSL_TXT_ECDH "ECDH"
+#define SSL_TXT_ECDHE "ECDHE"
+#define SSL_TXT_EECDH "EECDH"
+#define SSL_TXT_ECDSA "ECDSA"
+#define SSL_TXT_PSK "PSK"
+#define SSL_TXT_3DES "3DES"
+#define SSL_TXT_RC4 "RC4"
+#define SSL_TXT_AES128 "AES128"
+#define SSL_TXT_AES256 "AES256"
+#define SSL_TXT_AES "AES"
+#define SSL_TXT_AES_GCM "AESGCM"
+#define SSL_TXT_CHACHA20 "CHACHA20"
+#define SSL_TXT_MD5 "MD5"
+#define SSL_TXT_SHA1 "SHA1"
+#define SSL_TXT_SHA "SHA"
+#define SSL_TXT_SHA256 "SHA256"
+#define SSL_TXT_SHA384 "SHA384"
+#define SSL_TXT_SSLV3 "SSLv3"
+#define SSL_TXT_TLSV1 "TLSv1"
+#define SSL_TXT_TLSV1_1 "TLSv1.1"
+#define SSL_TXT_TLSV1_2 "TLSv1.2"
+#define SSL_TXT_TLSV1_3 "TLSv1.3"
+#define SSL_TXT_ALL "ALL"
+#define SSL_TXT_CMPDEF "COMPLEMENTOFDEFAULT"
+
+typedef struct ssl_conf_ctx_st SSL_CONF_CTX;
+
+// SSL_state returns |SSL_ST_INIT| if a handshake is in progress and |SSL_ST_OK|
+// otherwise.
+//
+// Use |SSL_is_init| instead.
+OPENSSL_EXPORT int SSL_state(const SSL *ssl);
+
+#define SSL_get_state(ssl) SSL_state(ssl)
+
+// SSL_set_shutdown causes |ssl| to behave as if the shutdown bitmask (see
+// |SSL_get_shutdown|) were |mode|. This may be used to skip sending or
+// receiving close_notify in |SSL_shutdown| by causing the implementation to
+// believe the events already happened.
+//
+// It is an error to use |SSL_set_shutdown| to unset a bit that has already been
+// set. Doing so will trigger an |assert| in debug builds and otherwise be
+// ignored.
+//
+// Use |SSL_CTX_set_quiet_shutdown| instead.
+OPENSSL_EXPORT void SSL_set_shutdown(SSL *ssl, int mode);
+
+// SSL_CTX_set_tmp_ecdh calls |SSL_CTX_set1_curves| with a one-element list
+// containing |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key);
+
+// SSL_set_tmp_ecdh calls |SSL_set1_curves| with a one-element list containing
+// |ec_key|'s curve.
+OPENSSL_EXPORT int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key);
+
+// SSL_add_dir_cert_subjects_to_stack lists files in directory |dir|. It calls
+// |SSL_add_file_cert_subjects_to_stack| on each file and returns one on success
+// or zero on error. This function is only available from the libdecrepit
+// library.
+OPENSSL_EXPORT int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *out,
+                                                      const char *dir);
+
+// SSL_set_verify_result calls |abort| unless |result| is |X509_V_OK|.
+//
+// TODO(davidben): Remove this function once it has been removed from
+// netty-tcnative.
+OPENSSL_EXPORT void SSL_set_verify_result(SSL *ssl, long result);
+
+// SSL_CTX_enable_tls_channel_id calls |SSL_CTX_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx);
+
+// SSL_enable_tls_channel_id calls |SSL_set_tls_channel_id_enabled|.
+OPENSSL_EXPORT int SSL_enable_tls_channel_id(SSL *ssl);
+
+// BIO_f_ssl returns a |BIO_METHOD| that can wrap an |SSL*| in a |BIO*|. Note
+// that this has quite different behaviour from the version in OpenSSL (notably
+// that it doesn't try to auto renegotiate).
+//
+// IMPORTANT: if you are not curl, don't use this.
+OPENSSL_EXPORT const BIO_METHOD *BIO_f_ssl(void);
+
+// BIO_set_ssl sets |ssl| as the underlying connection for |bio|, which must
+// have been created using |BIO_f_ssl|. If |take_owership| is true, |bio| will
+// call |SSL_free| on |ssl| when closed. It returns one on success or something
+// other than one on error.
+OPENSSL_EXPORT long BIO_set_ssl(BIO *bio, SSL *ssl, int take_owership);
+
+// SSL_CTX_set_ecdh_auto returns one.
+#define SSL_CTX_set_ecdh_auto(ctx, onoff) 1
+
+// SSL_set_ecdh_auto returns one.
+#define SSL_set_ecdh_auto(ssl, onoff) 1
+
+// SSL_get_session returns a non-owning pointer to |ssl|'s session. For
+// historical reasons, which session it returns depends on |ssl|'s state.
+//
+// Prior to the start of the initial handshake, it returns the session the
+// caller set with |SSL_set_session|. After the initial handshake has finished
+// and if no additional handshakes are in progress, it returns the currently
+// active session. Its behavior is undefined while a handshake is in progress.
+//
+// If trying to add new sessions to an external session cache, use
+// |SSL_CTX_sess_set_new_cb| instead. In particular, using the callback is
+// required as of TLS 1.3. For compatibility, this function will return an
+// unresumable session which may be cached, but will never be resumed.
+//
+// If querying properties of the connection, use APIs on the |SSL| object.
+OPENSSL_EXPORT SSL_SESSION *SSL_get_session(const SSL *ssl);
+
+// SSL_get0_session is an alias for |SSL_get_session|.
+#define SSL_get0_session SSL_get_session
+
+// SSL_get1_session acts like |SSL_get_session| but returns a new reference to
+// the session.
+OPENSSL_EXPORT SSL_SESSION *SSL_get1_session(SSL *ssl);
+
+#define OPENSSL_INIT_NO_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_LOAD_SSL_STRINGS 0
+#define OPENSSL_INIT_SSL_DEFAULT 0
+
+// OPENSSL_init_ssl calls |CRYPTO_library_init| and returns one.
+OPENSSL_EXPORT int OPENSSL_init_ssl(uint64_t opts,
+                                    const OPENSSL_INIT_SETTINGS *settings);
+
+// The following constants are legacy aliases for RSA-PSS with rsaEncryption
+// keys. Use the new names instead.
+#define SSL_SIGN_RSA_PSS_SHA256 SSL_SIGN_RSA_PSS_RSAE_SHA256
+#define SSL_SIGN_RSA_PSS_SHA384 SSL_SIGN_RSA_PSS_RSAE_SHA384
+#define SSL_SIGN_RSA_PSS_SHA512 SSL_SIGN_RSA_PSS_RSAE_SHA512
+
+// SSL_set_tlsext_status_type configures a client to request OCSP stapling if
+// |type| is |TLSEXT_STATUSTYPE_ocsp| and disables it otherwise. It returns one
+// on success and zero if handshake configuration has already been shed.
+//
+// Use |SSL_enable_ocsp_stapling| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_type(SSL *ssl, int type);
+
+// SSL_get_tlsext_status_type returns |TLSEXT_STATUSTYPE_ocsp| if the client
+// requested OCSP stapling and |TLSEXT_STATUSTYPE_nothing| otherwise. On the
+// client, this reflects whether OCSP stapling was enabled via, e.g.,
+// |SSL_set_tlsext_status_type|. On the server, this is determined during the
+// handshake. It may be queried in callbacks set by |SSL_CTX_set_cert_cb|. The
+// result is undefined after the handshake completes.
+OPENSSL_EXPORT int SSL_get_tlsext_status_type(const SSL *ssl);
+
+// SSL_set_tlsext_status_ocsp_resp sets the OCSP response. It returns one on
+// success and zero on error. On success, |ssl| takes ownership of |resp|, which
+// must have been allocated by |OPENSSL_malloc|.
+//
+// Use |SSL_set_ocsp_response| instead.
+OPENSSL_EXPORT int SSL_set_tlsext_status_ocsp_resp(SSL *ssl, uint8_t *resp,
+                                                   size_t resp_len);
+
+// SSL_get_tlsext_status_ocsp_resp sets |*out| to point to the OCSP response
+// from the server. It returns the length of the response. If there was no
+// response, it sets |*out| to NULL and returns zero.
+//
+// Use |SSL_get0_ocsp_response| instead.
+//
+// WARNING: the returned data is not guaranteed to be well formed.
+OPENSSL_EXPORT size_t SSL_get_tlsext_status_ocsp_resp(const SSL *ssl,
+                                                      const uint8_t **out);
+
+// SSL_CTX_set_tlsext_status_cb configures the legacy OpenSSL OCSP callback and
+// returns one. Though the type signature is the same, this callback has
+// different behavior for client and server connections:
+//
+// For clients, the callback is called after certificate verification. It should
+// return one for success, zero for a bad OCSP response, and a negative number
+// for internal error. Instead, handle this as part of certificate verification.
+// (Historically, OpenSSL verified certificates just before parsing stapled OCSP
+// responses, but BoringSSL fixes this ordering. All server credentials are
+// available during verification.)
+//
+// Do not use this callback as a server. It is provided for compatibility
+// purposes only. For servers, it is called to configure server credentials. It
+// should return |SSL_TLSEXT_ERR_OK| on success, |SSL_TLSEXT_ERR_NOACK| to
+// ignore OCSP requests, or |SSL_TLSEXT_ERR_ALERT_FATAL| on error. It is usually
+// used to fetch OCSP responses on demand, which is not ideal. Instead, treat
+// OCSP responses like other server credentials, such as certificates or SCT
+// lists. Configure, store, and refresh them eagerly. This avoids downtime if
+// the CA's OCSP responder is briefly offline.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx,
+                                                int (*callback)(SSL *ssl,
+                                                                void *arg));
+
+// SSL_CTX_set_tlsext_status_arg sets additional data for
+// |SSL_CTX_set_tlsext_status_cb|'s callback and returns one.
+OPENSSL_EXPORT int SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg);
+
+
+// Nodejs compatibility section (hidden).
+//
+// These defines exist for node.js, with the hope that we can eliminate the
+// need for them over time.
+
+#define SSLerr(function, reason) \
+  ERR_put_error(ERR_LIB_SSL, 0, reason, __FILE__, __LINE__)
+
+
+// Preprocessor compatibility section (hidden).
+//
+// Historically, a number of APIs were implemented in OpenSSL as macros and
+// constants to 'ctrl' functions. To avoid breaking #ifdefs in consumers, this
+// section defines a number of legacy macros.
+//
+// Although using either the CTRL values or their wrapper macros in #ifdefs is
+// still supported, the CTRL values may not be passed to |SSL_ctrl| and
+// |SSL_CTX_ctrl|. Call the functions (previously wrapper macros) instead.
+//
+// See PORTING.md in the BoringSSL source tree for a table of corresponding
+// functions.
+// https://boringssl.googlesource.com/boringssl/+/master/PORTING.md#Replacements-for-values
+
+#define DTLS_CTRL_GET_TIMEOUT doesnt_exist
+#define DTLS_CTRL_HANDLE_TIMEOUT doesnt_exist
+#define SSL_CTRL_CHAIN doesnt_exist
+#define SSL_CTRL_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_CLEAR_MODE doesnt_exist
+#define SSL_CTRL_CLEAR_OPTIONS doesnt_exist
+#define SSL_CTRL_EXTRA_CHAIN_CERT doesnt_exist
+#define SSL_CTRL_GET_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_CHANNEL_ID doesnt_exist
+#define SSL_CTRL_GET_CLIENT_CERT_TYPES doesnt_exist
+#define SSL_CTRL_GET_EXTRA_CHAIN_CERTS doesnt_exist
+#define SSL_CTRL_GET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_GET_NUM_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_GET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_GET_RI_SUPPORT doesnt_exist
+#define SSL_CTRL_GET_SERVER_TMP_KEY doesnt_exist
+#define SSL_CTRL_GET_SESSION_REUSED doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_GET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS doesnt_exist
+#define SSL_CTRL_MODE doesnt_exist
+#define SSL_CTRL_NEED_TMP_RSA doesnt_exist
+#define SSL_CTRL_OPTIONS doesnt_exist
+#define SSL_CTRL_SESS_NUMBER doesnt_exist
+#define SSL_CTRL_SET_CURVES doesnt_exist
+#define SSL_CTRL_SET_CURVES_LIST doesnt_exist
+#define SSL_CTRL_SET_ECDH_AUTO doesnt_exist
+#define SSL_CTRL_SET_MAX_CERT_LIST doesnt_exist
+#define SSL_CTRL_SET_MAX_SEND_FRAGMENT doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK doesnt_exist
+#define SSL_CTRL_SET_MSG_CALLBACK_ARG doesnt_exist
+#define SSL_CTRL_SET_MTU doesnt_exist
+#define SSL_CTRL_SET_READ_AHEAD doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_MODE doesnt_exist
+#define SSL_CTRL_SET_SESS_CACHE_SIZE doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_HOSTNAME doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS doesnt_exist
+#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_DH doesnt_exist
+#define SSL_CTRL_SET_TMP_DH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH doesnt_exist
+#define SSL_CTRL_SET_TMP_ECDH_CB doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA doesnt_exist
+#define SSL_CTRL_SET_TMP_RSA_CB doesnt_exist
+
+// |BORINGSSL_PREFIX| already makes each of these symbols into macros, so there
+// is no need to define conflicting macros.
+#if !defined(BORINGSSL_PREFIX)
+
+
+#endif // !defined(BORINGSSL_PREFIX)
+
+
+#if defined(__cplusplus)
+}  // extern C
+
+#if !defined(BORINGSSL_NO_CXX)
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(SSL, SSL_free)
+BORINGSSL_MAKE_DELETER(SSL_CTX, SSL_CTX_free)
+BORINGSSL_MAKE_UP_REF(SSL_CTX, SSL_CTX_up_ref)
+BORINGSSL_MAKE_DELETER(SSL_SESSION, SSL_SESSION_free)
+BORINGSSL_MAKE_UP_REF(SSL_SESSION, SSL_SESSION_up_ref)
+
+enum class OpenRecordResult {
+  kOK,
+  kDiscard,
+  kIncompleteRecord,
+  kAlertCloseNotify,
+  kError,
+};
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// OpenRecord decrypts the first complete SSL record from |in| in-place, sets
+// |out| to the decrypted application data, and |out_record_len| to the length
+// of the encrypted record. Returns:
+// - kOK if an application-data record was successfully decrypted and verified.
+// - kDiscard if a record was sucessfully processed, but should be discarded.
+// - kIncompleteRecord if |in| did not contain a complete record.
+// - kAlertCloseNotify if a record was successfully processed but is a
+//   close_notify alert.
+// - kError if an error occurred or the record is invalid. |*out_alert| will be
+//   set to an alert to emit, or zero if no alert should be emitted.
+OPENSSL_EXPORT OpenRecordResult OpenRecord(SSL *ssl, Span<uint8_t> *out,
+                                           size_t *out_record_len,
+                                           uint8_t *out_alert,
+                                           Span<uint8_t> in);
+
+OPENSSL_EXPORT size_t SealRecordPrefixLen(const SSL *ssl, size_t plaintext_len);
+
+// SealRecordSuffixLen returns the length of the suffix written by |SealRecord|.
+//
+// |plaintext_len| must be equal to the size of the plaintext passed to
+// |SealRecord|.
+//
+// |plaintext_len| must not exceed |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The returned
+// suffix length will not exceed |SSL3_RT_MAX_ENCRYPTED_OVERHEAD|.
+OPENSSL_EXPORT size_t SealRecordSuffixLen(const SSL *ssl, size_t plaintext_len);
+
+//  *** EXPERIMENTAL -- DO NOT USE ***
+//
+// SealRecord encrypts the cleartext of |in| and scatters the resulting TLS
+// application data record between |out_prefix|, |out|, and |out_suffix|. It
+// returns true on success or false if an error occurred.
+//
+// The length of |out_prefix| must equal |SealRecordPrefixLen|. The length of
+// |out| must equal the length of |in|, which must not exceed
+// |SSL3_RT_MAX_PLAINTEXT_LENGTH|. The length of |out_suffix| must equal
+// |SealRecordSuffixLen|.
+//
+// If enabled, |SealRecord| may perform TLS 1.0 CBC 1/n-1 record splitting.
+// |SealRecordPrefixLen| accounts for the required overhead if that is the case.
+//
+// |out| may equal |in| to encrypt in-place but may not otherwise alias.
+// |out_prefix| and |out_suffix| may not alias anything.
+OPENSSL_EXPORT bool SealRecord(SSL *ssl, Span<uint8_t> out_prefix,
+                               Span<uint8_t> out, Span<uint8_t> out_suffix,
+                               Span<const uint8_t> in);
+
+
+// *** EXPERIMENTAL — DO NOT USE WITHOUT CHECKING ***
+//
+// Split handshakes.
+//
+// Split handshakes allows the handshake part of a TLS connection to be
+// performed in a different process (or on a different machine) than the data
+// exchange. This only applies to servers.
+//
+// In the first part of a split handshake, an |SSL| (where the |SSL_CTX| has
+// been configured with |SSL_CTX_set_handoff_mode|) is used normally. Once the
+// ClientHello message has been received, the handshake will stop and
+// |SSL_get_error| will indicate |SSL_ERROR_HANDOFF|. At this point (and only
+// at this point), |SSL_serialize_handoff| can be called to write the “handoff”
+// state of the connection.
+//
+// Elsewhere, a fresh |SSL| can be used with |SSL_apply_handoff| to continue
+// the connection. The connection from the client is fed into this |SSL|, and
+// the handshake resumed. When the handshake stops again and |SSL_get_error|
+// indicates |SSL_ERROR_HANDBACK|, |SSL_serialize_handback| should be called to
+// serialize the state of the handshake again.
+//
+// Back at the first location, a fresh |SSL| can be used with
+// |SSL_apply_handback|. Then the client's connection can be processed mostly
+// as normal.
+//
+// Lastly, when a connection is in the handoff state, whether or not
+// |SSL_serialize_handoff| is called, |SSL_decline_handoff| will move it back
+// into a normal state where the connection can proceed without impact.
+//
+// WARNING: Currently only works with TLS 1.0–1.2.
+// WARNING: The serialisation formats are not yet stable: version skew may be
+//     fatal.
+// WARNING: The handback data contains sensitive key material and must be
+//     protected.
+// WARNING: Some calls on the final |SSL| will not work. Just as an example,
+//     calls like |SSL_get0_session_id_context| and |SSL_get_privatekey| won't
+//     work because the certificate used for handshaking isn't available.
+// WARNING: |SSL_apply_handoff| may trigger “msg” callback calls.
+
+OPENSSL_EXPORT void SSL_CTX_set_handoff_mode(SSL_CTX *ctx, bool on);
+OPENSSL_EXPORT void SSL_set_handoff_mode(SSL *SSL, bool on);
+OPENSSL_EXPORT bool SSL_serialize_handoff(const SSL *ssl, CBB *out,
+                                          SSL_CLIENT_HELLO *out_hello);
+OPENSSL_EXPORT bool SSL_decline_handoff(SSL *ssl);
+OPENSSL_EXPORT bool SSL_apply_handoff(SSL *ssl, Span<const uint8_t> handoff);
+OPENSSL_EXPORT bool SSL_serialize_handback(const SSL *ssl, CBB *out);
+OPENSSL_EXPORT bool SSL_apply_handback(SSL *ssl, Span<const uint8_t> handback);
+
+// SSL_get_traffic_secrets sets |*out_read_traffic_secret| and
+// |*out_write_traffic_secret| to reference the TLS 1.3 traffic secrets for
+// |ssl|. This function is only valid on TLS 1.3 connections that have
+// completed the handshake. It returns true on success and false on error.
+OPENSSL_EXPORT bool SSL_get_traffic_secrets(
+    const SSL *ssl, Span<const uint8_t> *out_read_traffic_secret,
+    Span<const uint8_t> *out_write_traffic_secret);
+
+BSSL_NAMESPACE_END
+
+}  // extern C++
+
+#endif  // !defined(BORINGSSL_NO_CXX)
+
+#endif
+
+#define SSL_R_APP_DATA_IN_HANDSHAKE 100
+#define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 101
+#define SSL_R_BAD_ALERT 102
+#define SSL_R_BAD_CHANGE_CIPHER_SPEC 103
+#define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK 104
+#define SSL_R_BAD_DH_P_LENGTH 105
+#define SSL_R_BAD_DIGEST_LENGTH 106
+#define SSL_R_BAD_ECC_CERT 107
+#define SSL_R_BAD_ECPOINT 108
+#define SSL_R_BAD_HANDSHAKE_RECORD 109
+#define SSL_R_BAD_HELLO_REQUEST 110
+#define SSL_R_BAD_LENGTH 111
+#define SSL_R_BAD_PACKET_LENGTH 112
+#define SSL_R_BAD_RSA_ENCRYPT 113
+#define SSL_R_BAD_SIGNATURE 114
+#define SSL_R_BAD_SRTP_MKI_VALUE 115
+#define SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST 116
+#define SSL_R_BAD_SSL_FILETYPE 117
+#define SSL_R_BAD_WRITE_RETRY 118
+#define SSL_R_BIO_NOT_SET 119
+#define SSL_R_BN_LIB 120
+#define SSL_R_BUFFER_TOO_SMALL 121
+#define SSL_R_CA_DN_LENGTH_MISMATCH 122
+#define SSL_R_CA_DN_TOO_LONG 123
+#define SSL_R_CCS_RECEIVED_EARLY 124
+#define SSL_R_CERTIFICATE_VERIFY_FAILED 125
+#define SSL_R_CERT_CB_ERROR 126
+#define SSL_R_CERT_LENGTH_MISMATCH 127
+#define SSL_R_CHANNEL_ID_NOT_P256 128
+#define SSL_R_CHANNEL_ID_SIGNATURE_INVALID 129
+#define SSL_R_CIPHER_OR_HASH_UNAVAILABLE 130
+#define SSL_R_CLIENTHELLO_PARSE_FAILED 131
+#define SSL_R_CLIENTHELLO_TLSEXT 132
+#define SSL_R_CONNECTION_REJECTED 133
+#define SSL_R_CONNECTION_TYPE_NOT_SET 134
+#define SSL_R_CUSTOM_EXTENSION_ERROR 135
+#define SSL_R_DATA_LENGTH_TOO_LONG 136
+#define SSL_R_DECODE_ERROR 137
+#define SSL_R_DECRYPTION_FAILED 138
+#define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC 139
+#define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG 140
+#define SSL_R_DH_P_TOO_LONG 141
+#define SSL_R_DIGEST_CHECK_FAILED 142
+#define SSL_R_DTLS_MESSAGE_TOO_BIG 143
+#define SSL_R_ECC_CERT_NOT_FOR_SIGNING 144
+#define SSL_R_EMS_STATE_INCONSISTENT 145
+#define SSL_R_ENCRYPTED_LENGTH_TOO_LONG 146
+#define SSL_R_ERROR_ADDING_EXTENSION 147
+#define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST 148
+#define SSL_R_ERROR_PARSING_EXTENSION 149
+#define SSL_R_EXCESSIVE_MESSAGE_SIZE 150
+#define SSL_R_EXTRA_DATA_IN_MESSAGE 151
+#define SSL_R_FRAGMENT_MISMATCH 152
+#define SSL_R_GOT_NEXT_PROTO_WITHOUT_EXTENSION 153
+#define SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO 154
+#define SSL_R_HTTPS_PROXY_REQUEST 155
+#define SSL_R_HTTP_REQUEST 156
+#define SSL_R_INAPPROPRIATE_FALLBACK 157
+#define SSL_R_INVALID_COMMAND 158
+#define SSL_R_INVALID_MESSAGE 159
+#define SSL_R_INVALID_SSL_SESSION 160
+#define SSL_R_INVALID_TICKET_KEYS_LENGTH 161
+#define SSL_R_LENGTH_MISMATCH 162
+#define SSL_R_MISSING_EXTENSION 164
+#define SSL_R_MISSING_RSA_CERTIFICATE 165
+#define SSL_R_MISSING_TMP_DH_KEY 166
+#define SSL_R_MISSING_TMP_ECDH_KEY 167
+#define SSL_R_MIXED_SPECIAL_OPERATOR_WITH_GROUPS 168
+#define SSL_R_MTU_TOO_SMALL 169
+#define SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN 170
+#define SSL_R_NESTED_GROUP 171
+#define SSL_R_NO_CERTIFICATES_RETURNED 172
+#define SSL_R_NO_CERTIFICATE_ASSIGNED 173
+#define SSL_R_NO_CERTIFICATE_SET 174
+#define SSL_R_NO_CIPHERS_AVAILABLE 175
+#define SSL_R_NO_CIPHERS_PASSED 176
+#define SSL_R_NO_CIPHER_MATCH 177
+#define SSL_R_NO_COMPRESSION_SPECIFIED 178
+#define SSL_R_NO_METHOD_SPECIFIED 179
+#define SSL_R_NO_P256_SUPPORT 180
+#define SSL_R_NO_PRIVATE_KEY_ASSIGNED 181
+#define SSL_R_NO_RENEGOTIATION 182
+#define SSL_R_NO_REQUIRED_DIGEST 183
+#define SSL_R_NO_SHARED_CIPHER 184
+#define SSL_R_NULL_SSL_CTX 185
+#define SSL_R_NULL_SSL_METHOD_PASSED 186
+#define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED 187
+#define SSL_R_OLD_SESSION_VERSION_NOT_RETURNED 188
+#define SSL_R_OUTPUT_ALIASES_INPUT 189
+#define SSL_R_PARSE_TLSEXT 190
+#define SSL_R_PATH_TOO_LONG 191
+#define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE 192
+#define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE 193
+#define SSL_R_PROTOCOL_IS_SHUTDOWN 194
+#define SSL_R_PSK_IDENTITY_NOT_FOUND 195
+#define SSL_R_PSK_NO_CLIENT_CB 196
+#define SSL_R_PSK_NO_SERVER_CB 197
+#define SSL_R_READ_TIMEOUT_EXPIRED 198
+#define SSL_R_RECORD_LENGTH_MISMATCH 199
+#define SSL_R_RECORD_TOO_LARGE 200
+#define SSL_R_RENEGOTIATION_ENCODING_ERR 201
+#define SSL_R_RENEGOTIATION_MISMATCH 202
+#define SSL_R_REQUIRED_CIPHER_MISSING 203
+#define SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION 204
+#define SSL_R_RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION 205
+#define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING 206
+#define SSL_R_SERVERHELLO_TLSEXT 207
+#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED 208
+#define SSL_R_SESSION_MAY_NOT_BE_CREATED 209
+#define SSL_R_SIGNATURE_ALGORITHMS_EXTENSION_SENT_BY_SERVER 210
+#define SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES 211
+#define SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE 212
+#define SSL_R_SSL3_EXT_INVALID_SERVERNAME 213
+#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION 214
+#define SSL_R_SSL_HANDSHAKE_FAILURE 215
+#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG 216
+#define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 217
+#define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG 218
+#define SSL_R_TOO_MANY_EMPTY_FRAGMENTS 219
+#define SSL_R_TOO_MANY_WARNING_ALERTS 220
+#define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS 221
+#define SSL_R_UNEXPECTED_EXTENSION 222
+#define SSL_R_UNEXPECTED_MESSAGE 223
+#define SSL_R_UNEXPECTED_OPERATOR_IN_GROUP 224
+#define SSL_R_UNEXPECTED_RECORD 225
+#define SSL_R_UNINITIALIZED 226
+#define SSL_R_UNKNOWN_ALERT_TYPE 227
+#define SSL_R_UNKNOWN_CERTIFICATE_TYPE 228
+#define SSL_R_UNKNOWN_CIPHER_RETURNED 229
+#define SSL_R_UNKNOWN_CIPHER_TYPE 230
+#define SSL_R_UNKNOWN_DIGEST 231
+#define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE 232
+#define SSL_R_UNKNOWN_PROTOCOL 233
+#define SSL_R_UNKNOWN_SSL_VERSION 234
+#define SSL_R_UNKNOWN_STATE 235
+#define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED 236
+#define SSL_R_UNSUPPORTED_CIPHER 237
+#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM 238
+#define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE 239
+#define SSL_R_UNSUPPORTED_PROTOCOL 240
+#define SSL_R_WRONG_CERTIFICATE_TYPE 241
+#define SSL_R_WRONG_CIPHER_RETURNED 242
+#define SSL_R_WRONG_CURVE 243
+#define SSL_R_WRONG_MESSAGE_TYPE 244
+#define SSL_R_WRONG_SIGNATURE_TYPE 245
+#define SSL_R_WRONG_SSL_VERSION 246
+#define SSL_R_WRONG_VERSION_NUMBER 247
+#define SSL_R_X509_LIB 248
+#define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS 249
+#define SSL_R_SHUTDOWN_WHILE_IN_INIT 250
+#define SSL_R_INVALID_OUTER_RECORD_TYPE 251
+#define SSL_R_UNSUPPORTED_PROTOCOL_FOR_CUSTOM_KEY 252
+#define SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS 253
+#define SSL_R_DOWNGRADE_DETECTED 254
+#define SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE 255
+#define SSL_R_INVALID_COMPRESSION_LIST 256
+#define SSL_R_DUPLICATE_EXTENSION 257
+#define SSL_R_MISSING_KEY_SHARE 258
+#define SSL_R_INVALID_ALPN_PROTOCOL 259
+#define SSL_R_TOO_MANY_KEY_UPDATES 260
+#define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG 261
+#define SSL_R_NO_CIPHERS_SPECIFIED 262
+#define SSL_R_RENEGOTIATION_EMS_MISMATCH 263
+#define SSL_R_DUPLICATE_KEY_SHARE 264
+#define SSL_R_NO_GROUPS_SPECIFIED 265
+#define SSL_R_NO_SHARED_GROUP 266
+#define SSL_R_PRE_SHARED_KEY_MUST_BE_LAST 267
+#define SSL_R_OLD_SESSION_PRF_HASH_MISMATCH 268
+#define SSL_R_INVALID_SCT_LIST 269
+#define SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA 270
+#define SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH 271
+#define SSL_R_CANNOT_PARSE_LEAF_CERT 272
+#define SSL_R_SERVER_CERT_CHANGED 273
+#define SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH 274
+#define SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD 275
+#define SSL_R_TICKET_ENCRYPTION_FAILED 276
+#define SSL_R_ALPN_MISMATCH_ON_EARLY_DATA 277
+#define SSL_R_WRONG_VERSION_ON_EARLY_DATA 278
+#define SSL_R_UNEXPECTED_EXTENSION_ON_EARLY_DATA 279
+#define SSL_R_NO_SUPPORTED_VERSIONS_ENABLED 280
+#define SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE 281
+#define SSL_R_EMPTY_HELLO_RETRY_REQUEST 282
+#define SSL_R_EARLY_DATA_NOT_IN_USE 283
+#define SSL_R_HANDSHAKE_NOT_COMPLETE 284
+#define SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI 285
+#define SSL_R_SERVER_ECHOED_INVALID_SESSION_ID 286
+#define SSL_R_PRIVATE_KEY_OPERATION_FAILED 287
+#define SSL_R_SECOND_SERVERHELLO_VERSION_MISMATCH 288
+#define SSL_R_OCSP_CB_ERROR 289
+#define SSL_R_SSL_SESSION_ID_TOO_LONG 290
+#define SSL_R_APPLICATION_DATA_ON_SHUTDOWN 291
+#define SSL_R_CERT_DECOMPRESSION_FAILED 292
+#define SSL_R_UNCOMPRESSED_CERT_TOO_LARGE 293
+#define SSL_R_UNKNOWN_CERT_COMPRESSION_ALG 294
+#define SSL_R_INVALID_SIGNATURE_ALGORITHM 295
+#define SSL_R_DUPLICATE_SIGNATURE_ALGORITHM 296
+#define SSL_R_TLS13_DOWNGRADE 297
+#define SSL_R_QUIC_INTERNAL_ERROR 298
+#define SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED 299
+#define SSL_R_TOO_MUCH_READ_EARLY_DATA 300
+#define SSL_R_INVALID_DELEGATED_CREDENTIAL 301
+#define SSL_R_KEY_USAGE_BIT_INCORRECT 302
+#define SSL_R_INCONSISTENT_CLIENT_HELLO 303
+#define SSL_R_SSLV3_ALERT_CLOSE_NOTIFY 1000
+#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE 1010
+#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC 1020
+#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED 1021
+#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW 1022
+#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE 1030
+#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE 1040
+#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE 1041
+#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE 1042
+#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE 1043
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED 1044
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED 1045
+#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN 1046
+#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER 1047
+#define SSL_R_TLSV1_ALERT_UNKNOWN_CA 1048
+#define SSL_R_TLSV1_ALERT_ACCESS_DENIED 1049
+#define SSL_R_TLSV1_ALERT_DECODE_ERROR 1050
+#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR 1051
+#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION 1060
+#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION 1070
+#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY 1071
+#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR 1080
+#define SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK 1086
+#define SSL_R_TLSV1_ALERT_USER_CANCELLED 1090
+#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION 1100
+#define SSL_R_TLSV1_UNSUPPORTED_EXTENSION 1110
+#define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE 1111
+#define SSL_R_TLSV1_UNRECOGNIZED_NAME 1112
+#define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE 1113
+#define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE 1114
+#define SSL_R_TLSV1_UNKNOWN_PSK_IDENTITY 1115
+#define SSL_R_TLSV1_CERTIFICATE_REQUIRED 1116
+
+#endif  // OPENSSL_HEADER_SSL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h
new file mode 100644
index 0000000..0bd562e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h	
@@ -0,0 +1,333 @@
+/* ssl/ssl3.h */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef OPENSSL_HEADER_SSL3_H
+#define OPENSSL_HEADER_SSL3_H
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/type_check.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+// These are kept to support clients that negotiates higher protocol versions
+// using SSLv2 client hello records.
+#define SSL2_MT_CLIENT_HELLO 1
+#define SSL2_VERSION 0x0002
+
+// Signalling cipher suite value from RFC 5746.
+#define SSL3_CK_SCSV 0x030000FF
+// Fallback signalling cipher suite value from RFC 7507.
+#define SSL3_CK_FALLBACK_SCSV 0x03005600
+
+#define SSL3_CK_RSA_NULL_MD5 0x03000001
+#define SSL3_CK_RSA_NULL_SHA 0x03000002
+#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
+#define SSL3_CK_RSA_RC4_128_MD5 0x03000004
+#define SSL3_CK_RSA_RC4_128_SHA 0x03000005
+#define SSL3_CK_RSA_RC2_40_MD5 0x03000006
+#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
+#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
+#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
+#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
+
+#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
+#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
+#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
+#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
+#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
+#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
+
+#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
+#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
+#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
+#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
+#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
+#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
+
+#define SSL3_CK_ADH_RC4_40_MD5 0x03000017
+#define SSL3_CK_ADH_RC4_128_MD5 0x03000018
+#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
+#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
+#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
+
+#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
+#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
+#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
+#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
+#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
+#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
+
+#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
+#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
+#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
+
+#define SSL3_SSL_SESSION_ID_LENGTH 32
+#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
+
+#define SSL3_MASTER_SECRET_SIZE 48
+#define SSL3_RANDOM_SIZE 32
+#define SSL3_SESSION_ID_SIZE 32
+#define SSL3_RT_HEADER_LENGTH 5
+
+#define SSL3_HM_HEADER_LENGTH 4
+
+#ifndef SSL3_ALIGN_PAYLOAD
+// Some will argue that this increases memory footprint, but it's not actually
+// true. Point is that malloc has to return at least 64-bit aligned pointers,
+// meaning that allocating 5 bytes wastes 3 bytes in either case. Suggested
+// pre-gaping simply moves these wasted bytes from the end of allocated region
+// to its front, but makes data payload aligned, which improves performance.
+#define SSL3_ALIGN_PAYLOAD 8
+#else
+#if (SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) != 0
+#error "insane SSL3_ALIGN_PAYLOAD"
+#undef SSL3_ALIGN_PAYLOAD
+#endif
+#endif
+
+// This is the maximum MAC (digest) size used by the SSL library. Currently
+// maximum of 20 is used by SHA1, but we reserve for future extension for
+// 512-bit hashes.
+
+#define SSL3_RT_MAX_MD_SIZE 64
+
+// Maximum block size used in all ciphersuites. Currently 16 for AES.
+
+#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
+
+// Maximum plaintext length: defined by SSL/TLS standards
+#define SSL3_RT_MAX_PLAIN_LENGTH 16384
+// Maximum compression overhead: defined by SSL/TLS standards
+#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
+
+// The standards give a maximum encryption overhead of 1024 bytes. In practice
+// the value is lower than this. The overhead is the maximum number of padding
+// bytes (256) plus the mac size.
+//
+// TODO(davidben): This derivation doesn't take AEADs into account, or TLS 1.1
+// explicit nonces. It happens to work because |SSL3_RT_MAX_MD_SIZE| is larger
+// than necessary and no true AEAD has variable overhead in TLS 1.2.
+#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
+
+// SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD is the maximum overhead in encrypting a
+// record. This does not include the record header. Some ciphers use explicit
+// nonces, so it includes both the AEAD overhead as well as the nonce.
+#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
+    (EVP_AEAD_MAX_OVERHEAD + EVP_AEAD_MAX_NONCE_LENGTH)
+
+OPENSSL_STATIC_ASSERT(SSL3_RT_MAX_ENCRYPTED_OVERHEAD >=
+                          SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD,
+                      "max overheads are inconsistent");
+
+// SSL3_RT_MAX_COMPRESSED_LENGTH is an alias for
+// |SSL3_RT_MAX_PLAIN_LENGTH|. Compression is gone, so don't include the
+// compression overhead.
+#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
+
+#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
+  (SSL3_RT_MAX_ENCRYPTED_OVERHEAD + SSL3_RT_MAX_COMPRESSED_LENGTH)
+#define SSL3_RT_MAX_PACKET_SIZE \
+  (SSL3_RT_MAX_ENCRYPTED_LENGTH + SSL3_RT_HEADER_LENGTH)
+
+#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
+#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
+
+#define SSL3_RT_CHANGE_CIPHER_SPEC 20
+#define SSL3_RT_ALERT 21
+#define SSL3_RT_HANDSHAKE 22
+#define SSL3_RT_APPLICATION_DATA 23
+
+// Pseudo content type for SSL/TLS header info
+#define SSL3_RT_HEADER 0x100
+
+#define SSL3_AL_WARNING 1
+#define SSL3_AL_FATAL 2
+
+#define SSL3_AD_CLOSE_NOTIFY 0
+#define SSL3_AD_UNEXPECTED_MESSAGE 10     // fatal
+#define SSL3_AD_BAD_RECORD_MAC 20         // fatal
+#define SSL3_AD_DECOMPRESSION_FAILURE 30  // fatal
+#define SSL3_AD_HANDSHAKE_FAILURE 40      // fatal
+#define SSL3_AD_NO_CERTIFICATE 41
+#define SSL3_AD_BAD_CERTIFICATE 42
+#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
+#define SSL3_AD_CERTIFICATE_REVOKED 44
+#define SSL3_AD_CERTIFICATE_EXPIRED 45
+#define SSL3_AD_CERTIFICATE_UNKNOWN 46
+#define SSL3_AD_ILLEGAL_PARAMETER 47       // fatal
+#define SSL3_AD_INAPPROPRIATE_FALLBACK 86  // fatal
+
+#define SSL3_CT_RSA_SIGN 1
+
+#define SSL3_MT_HELLO_REQUEST 0
+#define SSL3_MT_CLIENT_HELLO 1
+#define SSL3_MT_SERVER_HELLO 2
+#define SSL3_MT_NEW_SESSION_TICKET 4
+#define SSL3_MT_END_OF_EARLY_DATA 5
+#define SSL3_MT_ENCRYPTED_EXTENSIONS 8
+#define SSL3_MT_CERTIFICATE 11
+#define SSL3_MT_SERVER_KEY_EXCHANGE 12
+#define SSL3_MT_CERTIFICATE_REQUEST 13
+#define SSL3_MT_SERVER_HELLO_DONE 14
+#define SSL3_MT_CERTIFICATE_VERIFY 15
+#define SSL3_MT_CLIENT_KEY_EXCHANGE 16
+#define SSL3_MT_FINISHED 20
+#define SSL3_MT_CERTIFICATE_STATUS 22
+#define SSL3_MT_SUPPLEMENTAL_DATA 23
+#define SSL3_MT_KEY_UPDATE 24
+#define SSL3_MT_COMPRESSED_CERTIFICATE 25
+#define SSL3_MT_NEXT_PROTO 67
+#define SSL3_MT_CHANNEL_ID 203
+#define SSL3_MT_MESSAGE_HASH 254
+#define DTLS1_MT_HELLO_VERIFY_REQUEST 3
+
+// The following are legacy aliases for consumers which use
+// |SSL_CTX_set_msg_callback|.
+#define SSL3_MT_SERVER_DONE SSL3_MT_SERVER_HELLO_DONE
+#define SSL3_MT_NEWSESSION_TICKET SSL3_MT_NEW_SESSION_TICKET
+
+
+#define SSL3_MT_CCS 1
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SSL3_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.back
new file mode 100644
index 0000000..e3910f0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.back	
@@ -0,0 +1,333 @@
+/* ssl/ssl3.h */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef OPENSSL_HEADER_SSL3_H
+#define OPENSSL_HEADER_SSL3_H
+
+#include <openssl/aead.h>
+#include <openssl/type_check.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+// These are kept to support clients that negotiates higher protocol versions
+// using SSLv2 client hello records.
+#define SSL2_MT_CLIENT_HELLO 1
+#define SSL2_VERSION 0x0002
+
+// Signalling cipher suite value from RFC 5746.
+#define SSL3_CK_SCSV 0x030000FF
+// Fallback signalling cipher suite value from RFC 7507.
+#define SSL3_CK_FALLBACK_SCSV 0x03005600
+
+#define SSL3_CK_RSA_NULL_MD5 0x03000001
+#define SSL3_CK_RSA_NULL_SHA 0x03000002
+#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
+#define SSL3_CK_RSA_RC4_128_MD5 0x03000004
+#define SSL3_CK_RSA_RC4_128_SHA 0x03000005
+#define SSL3_CK_RSA_RC2_40_MD5 0x03000006
+#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
+#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
+#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
+#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
+
+#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
+#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
+#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
+#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
+#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
+#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
+
+#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
+#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
+#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
+#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
+#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
+#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
+
+#define SSL3_CK_ADH_RC4_40_MD5 0x03000017
+#define SSL3_CK_ADH_RC4_128_MD5 0x03000018
+#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
+#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
+#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
+
+#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
+#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
+#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
+#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
+#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
+#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
+
+#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
+#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
+#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
+
+#define SSL3_SSL_SESSION_ID_LENGTH 32
+#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
+
+#define SSL3_MASTER_SECRET_SIZE 48
+#define SSL3_RANDOM_SIZE 32
+#define SSL3_SESSION_ID_SIZE 32
+#define SSL3_RT_HEADER_LENGTH 5
+
+#define SSL3_HM_HEADER_LENGTH 4
+
+#ifndef SSL3_ALIGN_PAYLOAD
+// Some will argue that this increases memory footprint, but it's not actually
+// true. Point is that malloc has to return at least 64-bit aligned pointers,
+// meaning that allocating 5 bytes wastes 3 bytes in either case. Suggested
+// pre-gaping simply moves these wasted bytes from the end of allocated region
+// to its front, but makes data payload aligned, which improves performance.
+#define SSL3_ALIGN_PAYLOAD 8
+#else
+#if (SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) != 0
+#error "insane SSL3_ALIGN_PAYLOAD"
+#undef SSL3_ALIGN_PAYLOAD
+#endif
+#endif
+
+// This is the maximum MAC (digest) size used by the SSL library. Currently
+// maximum of 20 is used by SHA1, but we reserve for future extension for
+// 512-bit hashes.
+
+#define SSL3_RT_MAX_MD_SIZE 64
+
+// Maximum block size used in all ciphersuites. Currently 16 for AES.
+
+#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
+
+// Maximum plaintext length: defined by SSL/TLS standards
+#define SSL3_RT_MAX_PLAIN_LENGTH 16384
+// Maximum compression overhead: defined by SSL/TLS standards
+#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
+
+// The standards give a maximum encryption overhead of 1024 bytes. In practice
+// the value is lower than this. The overhead is the maximum number of padding
+// bytes (256) plus the mac size.
+//
+// TODO(davidben): This derivation doesn't take AEADs into account, or TLS 1.1
+// explicit nonces. It happens to work because |SSL3_RT_MAX_MD_SIZE| is larger
+// than necessary and no true AEAD has variable overhead in TLS 1.2.
+#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
+
+// SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD is the maximum overhead in encrypting a
+// record. This does not include the record header. Some ciphers use explicit
+// nonces, so it includes both the AEAD overhead as well as the nonce.
+#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
+    (EVP_AEAD_MAX_OVERHEAD + EVP_AEAD_MAX_NONCE_LENGTH)
+
+OPENSSL_STATIC_ASSERT(SSL3_RT_MAX_ENCRYPTED_OVERHEAD >=
+                          SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD,
+                      "max overheads are inconsistent");
+
+// SSL3_RT_MAX_COMPRESSED_LENGTH is an alias for
+// |SSL3_RT_MAX_PLAIN_LENGTH|. Compression is gone, so don't include the
+// compression overhead.
+#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
+
+#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
+  (SSL3_RT_MAX_ENCRYPTED_OVERHEAD + SSL3_RT_MAX_COMPRESSED_LENGTH)
+#define SSL3_RT_MAX_PACKET_SIZE \
+  (SSL3_RT_MAX_ENCRYPTED_LENGTH + SSL3_RT_HEADER_LENGTH)
+
+#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
+#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
+
+#define SSL3_RT_CHANGE_CIPHER_SPEC 20
+#define SSL3_RT_ALERT 21
+#define SSL3_RT_HANDSHAKE 22
+#define SSL3_RT_APPLICATION_DATA 23
+
+// Pseudo content type for SSL/TLS header info
+#define SSL3_RT_HEADER 0x100
+
+#define SSL3_AL_WARNING 1
+#define SSL3_AL_FATAL 2
+
+#define SSL3_AD_CLOSE_NOTIFY 0
+#define SSL3_AD_UNEXPECTED_MESSAGE 10     // fatal
+#define SSL3_AD_BAD_RECORD_MAC 20         // fatal
+#define SSL3_AD_DECOMPRESSION_FAILURE 30  // fatal
+#define SSL3_AD_HANDSHAKE_FAILURE 40      // fatal
+#define SSL3_AD_NO_CERTIFICATE 41
+#define SSL3_AD_BAD_CERTIFICATE 42
+#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
+#define SSL3_AD_CERTIFICATE_REVOKED 44
+#define SSL3_AD_CERTIFICATE_EXPIRED 45
+#define SSL3_AD_CERTIFICATE_UNKNOWN 46
+#define SSL3_AD_ILLEGAL_PARAMETER 47       // fatal
+#define SSL3_AD_INAPPROPRIATE_FALLBACK 86  // fatal
+
+#define SSL3_CT_RSA_SIGN 1
+
+#define SSL3_MT_HELLO_REQUEST 0
+#define SSL3_MT_CLIENT_HELLO 1
+#define SSL3_MT_SERVER_HELLO 2
+#define SSL3_MT_NEW_SESSION_TICKET 4
+#define SSL3_MT_END_OF_EARLY_DATA 5
+#define SSL3_MT_ENCRYPTED_EXTENSIONS 8
+#define SSL3_MT_CERTIFICATE 11
+#define SSL3_MT_SERVER_KEY_EXCHANGE 12
+#define SSL3_MT_CERTIFICATE_REQUEST 13
+#define SSL3_MT_SERVER_HELLO_DONE 14
+#define SSL3_MT_CERTIFICATE_VERIFY 15
+#define SSL3_MT_CLIENT_KEY_EXCHANGE 16
+#define SSL3_MT_FINISHED 20
+#define SSL3_MT_CERTIFICATE_STATUS 22
+#define SSL3_MT_SUPPLEMENTAL_DATA 23
+#define SSL3_MT_KEY_UPDATE 24
+#define SSL3_MT_COMPRESSED_CERTIFICATE 25
+#define SSL3_MT_NEXT_PROTO 67
+#define SSL3_MT_CHANNEL_ID 203
+#define SSL3_MT_MESSAGE_HASH 254
+#define DTLS1_MT_HELLO_VERIFY_REQUEST 3
+
+// The following are legacy aliases for consumers which use
+// |SSL_CTX_set_msg_callback|.
+#define SSL3_MT_SERVER_DONE SSL3_MT_SERVER_HELLO_DONE
+#define SSL3_MT_NEWSESSION_TICKET SSL3_MT_NEW_SESSION_TICKET
+
+
+#define SSL3_MT_CCS 1
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SSL3_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.grpc_back
new file mode 100644
index 0000000..e3910f0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/ssl3.h.grpc_back	
@@ -0,0 +1,333 @@
+/* ssl/ssl3.h */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef OPENSSL_HEADER_SSL3_H
+#define OPENSSL_HEADER_SSL3_H
+
+#include <openssl/aead.h>
+#include <openssl/type_check.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+// These are kept to support clients that negotiates higher protocol versions
+// using SSLv2 client hello records.
+#define SSL2_MT_CLIENT_HELLO 1
+#define SSL2_VERSION 0x0002
+
+// Signalling cipher suite value from RFC 5746.
+#define SSL3_CK_SCSV 0x030000FF
+// Fallback signalling cipher suite value from RFC 7507.
+#define SSL3_CK_FALLBACK_SCSV 0x03005600
+
+#define SSL3_CK_RSA_NULL_MD5 0x03000001
+#define SSL3_CK_RSA_NULL_SHA 0x03000002
+#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
+#define SSL3_CK_RSA_RC4_128_MD5 0x03000004
+#define SSL3_CK_RSA_RC4_128_SHA 0x03000005
+#define SSL3_CK_RSA_RC2_40_MD5 0x03000006
+#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
+#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
+#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
+#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
+
+#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
+#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
+#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
+#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
+#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
+#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
+
+#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
+#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
+#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
+#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
+#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
+#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
+
+#define SSL3_CK_ADH_RC4_40_MD5 0x03000017
+#define SSL3_CK_ADH_RC4_128_MD5 0x03000018
+#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
+#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
+#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
+
+#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
+#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
+#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
+#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
+#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
+#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
+#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
+#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
+
+#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
+#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
+#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
+#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
+
+#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
+#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
+#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
+#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
+
+#define SSL3_SSL_SESSION_ID_LENGTH 32
+#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
+
+#define SSL3_MASTER_SECRET_SIZE 48
+#define SSL3_RANDOM_SIZE 32
+#define SSL3_SESSION_ID_SIZE 32
+#define SSL3_RT_HEADER_LENGTH 5
+
+#define SSL3_HM_HEADER_LENGTH 4
+
+#ifndef SSL3_ALIGN_PAYLOAD
+// Some will argue that this increases memory footprint, but it's not actually
+// true. Point is that malloc has to return at least 64-bit aligned pointers,
+// meaning that allocating 5 bytes wastes 3 bytes in either case. Suggested
+// pre-gaping simply moves these wasted bytes from the end of allocated region
+// to its front, but makes data payload aligned, which improves performance.
+#define SSL3_ALIGN_PAYLOAD 8
+#else
+#if (SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) != 0
+#error "insane SSL3_ALIGN_PAYLOAD"
+#undef SSL3_ALIGN_PAYLOAD
+#endif
+#endif
+
+// This is the maximum MAC (digest) size used by the SSL library. Currently
+// maximum of 20 is used by SHA1, but we reserve for future extension for
+// 512-bit hashes.
+
+#define SSL3_RT_MAX_MD_SIZE 64
+
+// Maximum block size used in all ciphersuites. Currently 16 for AES.
+
+#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
+
+// Maximum plaintext length: defined by SSL/TLS standards
+#define SSL3_RT_MAX_PLAIN_LENGTH 16384
+// Maximum compression overhead: defined by SSL/TLS standards
+#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
+
+// The standards give a maximum encryption overhead of 1024 bytes. In practice
+// the value is lower than this. The overhead is the maximum number of padding
+// bytes (256) plus the mac size.
+//
+// TODO(davidben): This derivation doesn't take AEADs into account, or TLS 1.1
+// explicit nonces. It happens to work because |SSL3_RT_MAX_MD_SIZE| is larger
+// than necessary and no true AEAD has variable overhead in TLS 1.2.
+#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
+
+// SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD is the maximum overhead in encrypting a
+// record. This does not include the record header. Some ciphers use explicit
+// nonces, so it includes both the AEAD overhead as well as the nonce.
+#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
+    (EVP_AEAD_MAX_OVERHEAD + EVP_AEAD_MAX_NONCE_LENGTH)
+
+OPENSSL_STATIC_ASSERT(SSL3_RT_MAX_ENCRYPTED_OVERHEAD >=
+                          SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD,
+                      "max overheads are inconsistent");
+
+// SSL3_RT_MAX_COMPRESSED_LENGTH is an alias for
+// |SSL3_RT_MAX_PLAIN_LENGTH|. Compression is gone, so don't include the
+// compression overhead.
+#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
+
+#define SSL3_RT_MAX_ENCRYPTED_LENGTH \
+  (SSL3_RT_MAX_ENCRYPTED_OVERHEAD + SSL3_RT_MAX_COMPRESSED_LENGTH)
+#define SSL3_RT_MAX_PACKET_SIZE \
+  (SSL3_RT_MAX_ENCRYPTED_LENGTH + SSL3_RT_HEADER_LENGTH)
+
+#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
+#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
+
+#define SSL3_RT_CHANGE_CIPHER_SPEC 20
+#define SSL3_RT_ALERT 21
+#define SSL3_RT_HANDSHAKE 22
+#define SSL3_RT_APPLICATION_DATA 23
+
+// Pseudo content type for SSL/TLS header info
+#define SSL3_RT_HEADER 0x100
+
+#define SSL3_AL_WARNING 1
+#define SSL3_AL_FATAL 2
+
+#define SSL3_AD_CLOSE_NOTIFY 0
+#define SSL3_AD_UNEXPECTED_MESSAGE 10     // fatal
+#define SSL3_AD_BAD_RECORD_MAC 20         // fatal
+#define SSL3_AD_DECOMPRESSION_FAILURE 30  // fatal
+#define SSL3_AD_HANDSHAKE_FAILURE 40      // fatal
+#define SSL3_AD_NO_CERTIFICATE 41
+#define SSL3_AD_BAD_CERTIFICATE 42
+#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
+#define SSL3_AD_CERTIFICATE_REVOKED 44
+#define SSL3_AD_CERTIFICATE_EXPIRED 45
+#define SSL3_AD_CERTIFICATE_UNKNOWN 46
+#define SSL3_AD_ILLEGAL_PARAMETER 47       // fatal
+#define SSL3_AD_INAPPROPRIATE_FALLBACK 86  // fatal
+
+#define SSL3_CT_RSA_SIGN 1
+
+#define SSL3_MT_HELLO_REQUEST 0
+#define SSL3_MT_CLIENT_HELLO 1
+#define SSL3_MT_SERVER_HELLO 2
+#define SSL3_MT_NEW_SESSION_TICKET 4
+#define SSL3_MT_END_OF_EARLY_DATA 5
+#define SSL3_MT_ENCRYPTED_EXTENSIONS 8
+#define SSL3_MT_CERTIFICATE 11
+#define SSL3_MT_SERVER_KEY_EXCHANGE 12
+#define SSL3_MT_CERTIFICATE_REQUEST 13
+#define SSL3_MT_SERVER_HELLO_DONE 14
+#define SSL3_MT_CERTIFICATE_VERIFY 15
+#define SSL3_MT_CLIENT_KEY_EXCHANGE 16
+#define SSL3_MT_FINISHED 20
+#define SSL3_MT_CERTIFICATE_STATUS 22
+#define SSL3_MT_SUPPLEMENTAL_DATA 23
+#define SSL3_MT_KEY_UPDATE 24
+#define SSL3_MT_COMPRESSED_CERTIFICATE 25
+#define SSL3_MT_NEXT_PROTO 67
+#define SSL3_MT_CHANNEL_ID 203
+#define SSL3_MT_MESSAGE_HASH 254
+#define DTLS1_MT_HELLO_VERIFY_REQUEST 3
+
+// The following are legacy aliases for consumers which use
+// |SSL_CTX_set_msg_callback|.
+#define SSL3_MT_SERVER_DONE SSL3_MT_SERVER_HELLO_DONE
+#define SSL3_MT_NEWSESSION_TICKET SSL3_MT_NEW_SESSION_TICKET
+
+
+#define SSL3_MT_CCS 1
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_SSL3_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h
new file mode 100644
index 0000000..61c212c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h	
@@ -0,0 +1,542 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_STACK_H
+#define OPENSSL_HEADER_STACK_H
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// A stack, in OpenSSL, is an array of pointers. They are the most commonly
+// used collection object.
+//
+// This file defines macros for type safe use of the stack functions. A stack
+// of a specific type of object has type |STACK_OF(type)|. This can be defined
+// (once) with |DEFINE_STACK_OF(type)| and declared where needed with
+// |DECLARE_STACK_OF(type)|. For example:
+//
+//   typedef struct foo_st {
+//     int bar;
+//   } FOO;
+//
+//   DEFINE_STACK_OF(FOO)
+//
+// Although note that the stack will contain /pointers/ to |FOO|.
+//
+// A macro will be defined for each of the sk_* functions below. For
+// STACK_OF(FOO), the macros would be sk_FOO_new, sk_FOO_pop etc.
+
+
+// stack_free_func is a function that frees an element in a stack. Note its
+// actual type is void (*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void (*stack_free_func)(void *ptr);
+
+// stack_copy_func is a function that copies an element in a stack. Note its
+// actual type is T *(*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void *(*stack_copy_func)(void *ptr);
+
+// stack_cmp_func is a comparison function that returns a value < 0, 0 or > 0
+// if |*a| is less than, equal to or greater than |*b|, respectively.  Note the
+// extra indirection - the function is given a pointer to a pointer to the
+// element. This differs from the usual qsort/bsearch comparison function.
+//
+// Note its actual type is int (*)(const T **, const T **). Low-level |sk_*|
+// functions will be passed a type-specific wrapper to call it correctly.
+typedef int (*stack_cmp_func)(const void **a, const void **b);
+
+// stack_st contains an array of pointers. It is not designed to be used
+// directly, rather the wrapper macros should be used.
+typedef struct stack_st {
+  // num contains the number of valid pointers in |data|.
+  size_t num;
+  void **data;
+  // sorted is non-zero if the values pointed to by |data| are in ascending
+  // order, based on |comp|.
+  int sorted;
+  // num_alloc contains the number of pointers allocated in the buffer pointed
+  // to by |data|, which may be larger than |num|.
+  size_t num_alloc;
+  // comp is an optional comparison function.
+  stack_cmp_func comp;
+} _STACK;
+
+
+#define STACK_OF(type) struct stack_st_##type
+
+#define DECLARE_STACK_OF(type) STACK_OF(type);
+
+// These are the raw stack functions, you shouldn't be using them. Rather you
+// should be using the type stack macros implemented above.
+
+// sk_new creates a new, empty stack with the given comparison function, which
+// may be zero. It returns the new stack or NULL on allocation failure.
+OPENSSL_EXPORT _STACK *sk_new(stack_cmp_func comp);
+
+// sk_new_null creates a new, empty stack. It returns the new stack or NULL on
+// allocation failure.
+OPENSSL_EXPORT _STACK *sk_new_null(void);
+
+// sk_num returns the number of elements in |s|.
+OPENSSL_EXPORT size_t sk_num(const _STACK *sk);
+
+// sk_zero resets |sk| to the empty state but does nothing to free the
+// individual elements themselves.
+OPENSSL_EXPORT void sk_zero(_STACK *sk);
+
+// sk_value returns the |i|th pointer in |sk|, or NULL if |i| is out of
+// range.
+OPENSSL_EXPORT void *sk_value(const _STACK *sk, size_t i);
+
+// sk_set sets the |i|th pointer in |sk| to |p| and returns |p|. If |i| is out
+// of range, it returns NULL.
+OPENSSL_EXPORT void *sk_set(_STACK *sk, size_t i, void *p);
+
+// sk_free frees the given stack and array of pointers, but does nothing to
+// free the individual elements. Also see |sk_pop_free_ex|.
+OPENSSL_EXPORT void sk_free(_STACK *sk);
+
+// sk_pop_free_ex calls |free_func| on each element in the stack and then frees
+// the stack itself. Note this corresponds to |sk_FOO_pop_free|. It is named
+// |sk_pop_free_ex| as a workaround for existing code calling an older version
+// of |sk_pop_free|.
+OPENSSL_EXPORT void sk_pop_free_ex(_STACK *sk,
+                                   void (*call_free_func)(stack_free_func,
+                                                          void *),
+                                   stack_free_func free_func);
+
+// sk_insert inserts |p| into the stack at index |where|, moving existing
+// elements if needed. It returns the length of the new stack, or zero on
+// error.
+OPENSSL_EXPORT size_t sk_insert(_STACK *sk, void *p, size_t where);
+
+// sk_delete removes the pointer at index |where|, moving other elements down
+// if needed. It returns the removed pointer, or NULL if |where| is out of
+// range.
+OPENSSL_EXPORT void *sk_delete(_STACK *sk, size_t where);
+
+// sk_delete_ptr removes, at most, one instance of |p| from the stack based on
+// pointer equality. If an instance of |p| is found then |p| is returned,
+// otherwise it returns NULL.
+OPENSSL_EXPORT void *sk_delete_ptr(_STACK *sk, const void *p);
+
+// sk_find returns the first value in the stack equal to |p|. If a comparison
+// function has been set on the stack, equality is defined by it, otherwise
+// pointer equality is used. If the stack is sorted, then a binary search is
+// used, otherwise a linear search is performed. If a matching element is found,
+// its index is written to
+// |*out_index| (if |out_index| is not NULL) and one is returned. Otherwise zero
+// is returned.
+//
+// Note this differs from OpenSSL. The type signature is slightly different, and
+// OpenSSL's sk_find will implicitly sort |sk| if it has a comparison function
+// defined.
+OPENSSL_EXPORT int sk_find(const _STACK *sk, size_t *out_index, const void *p,
+                           int (*call_cmp_func)(stack_cmp_func, const void **,
+                                                const void **));
+
+// sk_shift removes and returns the first element in the stack, or returns NULL
+// if the stack is empty.
+OPENSSL_EXPORT void *sk_shift(_STACK *sk);
+
+// sk_push appends |p| to the stack and returns the length of the new stack, or
+// 0 on allocation failure.
+OPENSSL_EXPORT size_t sk_push(_STACK *sk, void *p);
+
+// sk_pop returns and removes the last element on the stack, or NULL if the
+// stack is empty.
+OPENSSL_EXPORT void *sk_pop(_STACK *sk);
+
+// sk_dup performs a shallow copy of a stack and returns the new stack, or NULL
+// on error.
+OPENSSL_EXPORT _STACK *sk_dup(const _STACK *sk);
+
+// sk_sort sorts the elements of |sk| into ascending order based on the
+// comparison function. The stack maintains a |sorted| flag and sorting an
+// already sorted stack is a no-op.
+OPENSSL_EXPORT void sk_sort(_STACK *sk);
+
+// sk_is_sorted returns one if |sk| is known to be sorted and zero
+// otherwise.
+OPENSSL_EXPORT int sk_is_sorted(const _STACK *sk);
+
+// sk_set_cmp_func sets the comparison function to be used by |sk| and returns
+// the previous one.
+OPENSSL_EXPORT stack_cmp_func sk_set_cmp_func(_STACK *sk, stack_cmp_func comp);
+
+// sk_deep_copy performs a copy of |sk| and of each of the non-NULL elements in
+// |sk| by using |copy_func|. If an error occurs, |free_func| is used to free
+// any copies already made and NULL is returned.
+OPENSSL_EXPORT _STACK *sk_deep_copy(
+    const _STACK *sk, void *(*call_copy_func)(stack_copy_func, void *),
+    stack_copy_func copy_func, void (*call_free_func)(stack_free_func, void *),
+    stack_free_func free_func);
+
+
+// Deprecated functions.
+
+// sk_pop_free behaves like |sk_pop_free_ex| but performs an invalid function
+// pointer cast. It exists because some existing callers called |sk_pop_free|
+// directly.
+//
+// TODO(davidben): Migrate callers to bssl::UniquePtr and remove this.
+OPENSSL_EXPORT void sk_pop_free(_STACK *sk, stack_free_func free_func);
+
+
+// Defining stack types.
+//
+// This set of macros is used to emit the typed functions that act on a
+// |STACK_OF(T)|.
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+namespace internal {
+template <typename T>
+struct StackTraits {};
+}
+BSSL_NAMESPACE_END
+}
+
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const) \
+  extern "C++" {                                            \
+  BSSL_NAMESPACE_BEGIN                                      \
+  namespace internal {                                      \
+  template <>                                               \
+  struct StackTraits<STACK_OF(name)> {                      \
+    static constexpr bool kIsStack = true;                  \
+    using Type = type;                                      \
+    static constexpr bool kIsConst = is_const;              \
+  };                                                        \
+  }                                                         \
+  BSSL_NAMESPACE_END                                        \
+  }
+
+#else
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const)
+#endif
+
+#define BORINGSSL_DEFINE_STACK_OF_IMPL(name, ptrtype, constptrtype)            \
+  DECLARE_STACK_OF(name)                                                       \
+                                                                               \
+  typedef void (*stack_##name##_free_func)(ptrtype);                           \
+  typedef ptrtype (*stack_##name##_copy_func)(ptrtype);                        \
+  typedef int (*stack_##name##_cmp_func)(constptrtype *a, constptrtype *b);    \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_call_free_func(stack_free_func free_func,    \
+                                                 void *ptr) {                  \
+    ((stack_##name##_free_func)free_func)((ptrtype)ptr);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void *sk_##name##_call_copy_func(stack_copy_func copy_func,   \
+                                                  void *ptr) {                 \
+    return (void *)((stack_##name##_copy_func)copy_func)((ptrtype)ptr);        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_call_cmp_func(                                \
+      stack_cmp_func cmp_func, const void **a, const void **b) {               \
+    constptrtype a_ptr = (constptrtype)*a;                                     \
+    constptrtype b_ptr = (constptrtype)*b;                                     \
+    return ((stack_##name##_cmp_func)cmp_func)(&a_ptr, &b_ptr);                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_new(stack_##name##_cmp_func comp) {                          \
+    return (STACK_OF(name) *)sk_new((stack_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *sk_##name##_new_null(void) {                  \
+    return (STACK_OF(name) *)sk_new_null();                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_num(const STACK_OF(name) *sk) {            \
+    return sk_num((const _STACK *)sk);                                         \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_zero(STACK_OF(name) *sk) {                   \
+    sk_zero((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_value(const STACK_OF(name) *sk,           \
+                                           size_t i) {                         \
+    return (ptrtype)sk_value((const _STACK *)sk, i);                           \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_set(STACK_OF(name) *sk, size_t i,         \
+                                         ptrtype p) {                          \
+    return (ptrtype)sk_set((_STACK *)sk, i, (void *)p);                        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_free(STACK_OF(name) * sk) {                  \
+    sk_free((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_pop_free(                                    \
+      STACK_OF(name) * sk, stack_##name##_free_func free_func) {               \
+    sk_pop_free_ex((_STACK *)sk, sk_##name##_call_free_func,                   \
+                   (stack_free_func)free_func);                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_insert(STACK_OF(name) *sk, ptrtype p,      \
+                                           size_t where) {                     \
+    return sk_insert((_STACK *)sk, (void *)p, where);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete(STACK_OF(name) *sk,                \
+                                            size_t where) {                    \
+    return (ptrtype)sk_delete((_STACK *)sk, where);                            \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete_ptr(STACK_OF(name) *sk,            \
+                                                constptrtype p) {              \
+    return (ptrtype)sk_delete_ptr((_STACK *)sk, (const void *)p);              \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_find(const STACK_OF(name) *sk,                \
+                                      size_t * out_index, constptrtype p) {    \
+    return sk_find((const _STACK *)sk, out_index, (const void *)p,             \
+                   sk_##name##_call_cmp_func);                                 \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_shift(STACK_OF(name) *sk) {               \
+    return (ptrtype)sk_shift((_STACK *)sk);                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_push(STACK_OF(name) *sk, ptrtype p) {      \
+    return sk_push((_STACK *)sk, (void *)p);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_pop(STACK_OF(name) *sk) {                 \
+    return (ptrtype)sk_pop((_STACK *)sk);                                      \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) * sk_##name##_dup(const STACK_OF(name) *sk) {  \
+    return (STACK_OF(name) *)sk_dup((const _STACK *)sk);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_sort(STACK_OF(name) *sk) {                   \
+    sk_sort((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_is_sorted(const STACK_OF(name) *sk) {         \
+    return sk_is_sorted((const _STACK *)sk);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE stack_##name##_cmp_func sk_##name##_set_cmp_func(             \
+      STACK_OF(name) *sk, stack_##name##_cmp_func comp) {                      \
+    return (stack_##name##_cmp_func)sk_set_cmp_func((_STACK *)sk,              \
+                                                    (stack_cmp_func)comp);     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_deep_copy(const STACK_OF(name) *sk,                          \
+                            ptrtype(*copy_func)(ptrtype),                      \
+                            void (*free_func)(ptrtype)) {                      \
+    return (STACK_OF(name) *)sk_deep_copy(                                     \
+        (const _STACK *)sk, sk_##name##_call_copy_func,                        \
+        (stack_copy_func)copy_func, sk_##name##_call_free_func,                \
+        (stack_free_func)free_func);                                           \
+  }
+
+// DEFINE_NAMED_STACK_OF defines |STACK_OF(name)| to be a stack whose elements
+// are |type| *.
+#define DEFINE_NAMED_STACK_OF(name, type)                    \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(name, type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(name, type, false)
+
+// DEFINE_STACK_OF defines |STACK_OF(type)| to be a stack whose elements are
+// |type| *.
+#define DEFINE_STACK_OF(type) DEFINE_NAMED_STACK_OF(type, type)
+
+// DEFINE_CONST_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are const |type| *.
+#define DEFINE_CONST_STACK_OF(type)                                \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, const type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(type, const type, true)
+
+// DEFINE_SPECIAL_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are |type|, where |type| must be a typedef for a pointer.
+#define DEFINE_SPECIAL_STACK_OF(type)                   \
+  OPENSSL_STATIC_ASSERT(sizeof(type) == sizeof(void *), \
+                        #type " is not a pointer");     \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, type, const type)
+
+
+typedef char *OPENSSL_STRING;
+
+DEFINE_STACK_OF(void)
+DEFINE_SPECIAL_STACK_OF(OPENSSL_STRING)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// Stacks defined with |DEFINE_CONST_STACK_OF| are freed with |sk_free|.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) { sk_free(reinterpret_cast<_STACK *>(sk)); }
+};
+
+// Stacks defined with |DEFINE_STACK_OF| are freed with |sk_pop_free| and the
+// corresponding type's deleter.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<!StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) {
+    // sk_FOO_pop_free is defined by macros and bound by name, so we cannot
+    // access it from C++ here.
+    using Type = typename StackTraits<Stack>::Type;
+    sk_pop_free_ex(reinterpret_cast<_STACK *>(sk),
+                   [](stack_free_func /* unused */, void *ptr) {
+                     DeleterImpl<Type>::Free(reinterpret_cast<Type *>(ptr));
+                   },
+                   nullptr);
+  }
+};
+
+template <typename Stack>
+class StackIteratorImpl {
+ public:
+  using Type = typename StackTraits<Stack>::Type;
+  // Iterators must be default-constructable.
+  StackIteratorImpl() : sk_(nullptr), idx_(0) {}
+  StackIteratorImpl(const Stack *sk, size_t idx) : sk_(sk), idx_(idx) {}
+
+  bool operator==(StackIteratorImpl other) const {
+    return sk_ == other.sk_ && idx_ == other.idx_;
+  }
+  bool operator!=(StackIteratorImpl other) const {
+    return !(*this == other);
+  }
+
+  Type *operator*() const {
+    return reinterpret_cast<Type *>(
+        sk_value(reinterpret_cast<const _STACK *>(sk_), idx_));
+  }
+
+  StackIteratorImpl &operator++(/* prefix */) {
+    idx_++;
+    return *this;
+  }
+
+  StackIteratorImpl operator++(int /* postfix */) {
+    StackIteratorImpl copy(*this);
+    ++(*this);
+    return copy;
+  }
+
+ private:
+  const Stack *sk_;
+  size_t idx_;
+};
+
+template <typename Stack>
+using StackIterator = typename std::enable_if<StackTraits<Stack>::kIsStack,
+                                              StackIteratorImpl<Stack>>::type;
+
+}  // namespace internal
+
+// PushToStack pushes |elem| to |sk|. It returns true on success and false on
+// allocation failure.
+template <typename Stack>
+inline
+    typename std::enable_if<!internal::StackTraits<Stack>::kIsConst, bool>::type
+    PushToStack(Stack *sk,
+                UniquePtr<typename internal::StackTraits<Stack>::Type> elem) {
+  if (!sk_push(reinterpret_cast<_STACK *>(sk), elem.get())) {
+    return false;
+  }
+  // sk_push takes ownership on success.
+  elem.release();
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+// Define begin() and end() for stack types so C++ range for loops work.
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> begin(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(sk, 0);
+}
+
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> end(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(
+      sk, sk_num(reinterpret_cast<const _STACK *>(sk)));
+}
+
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_STACK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.back
new file mode 100644
index 0000000..04e942c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.back	
@@ -0,0 +1,542 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_STACK_H
+#define OPENSSL_HEADER_STACK_H
+
+#include <openssl/base.h>
+
+#include <openssl/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// A stack, in OpenSSL, is an array of pointers. They are the most commonly
+// used collection object.
+//
+// This file defines macros for type safe use of the stack functions. A stack
+// of a specific type of object has type |STACK_OF(type)|. This can be defined
+// (once) with |DEFINE_STACK_OF(type)| and declared where needed with
+// |DECLARE_STACK_OF(type)|. For example:
+//
+//   typedef struct foo_st {
+//     int bar;
+//   } FOO;
+//
+//   DEFINE_STACK_OF(FOO)
+//
+// Although note that the stack will contain /pointers/ to |FOO|.
+//
+// A macro will be defined for each of the sk_* functions below. For
+// STACK_OF(FOO), the macros would be sk_FOO_new, sk_FOO_pop etc.
+
+
+// stack_free_func is a function that frees an element in a stack. Note its
+// actual type is void (*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void (*stack_free_func)(void *ptr);
+
+// stack_copy_func is a function that copies an element in a stack. Note its
+// actual type is T *(*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void *(*stack_copy_func)(void *ptr);
+
+// stack_cmp_func is a comparison function that returns a value < 0, 0 or > 0
+// if |*a| is less than, equal to or greater than |*b|, respectively.  Note the
+// extra indirection - the function is given a pointer to a pointer to the
+// element. This differs from the usual qsort/bsearch comparison function.
+//
+// Note its actual type is int (*)(const T **, const T **). Low-level |sk_*|
+// functions will be passed a type-specific wrapper to call it correctly.
+typedef int (*stack_cmp_func)(const void **a, const void **b);
+
+// stack_st contains an array of pointers. It is not designed to be used
+// directly, rather the wrapper macros should be used.
+typedef struct stack_st {
+  // num contains the number of valid pointers in |data|.
+  size_t num;
+  void **data;
+  // sorted is non-zero if the values pointed to by |data| are in ascending
+  // order, based on |comp|.
+  int sorted;
+  // num_alloc contains the number of pointers allocated in the buffer pointed
+  // to by |data|, which may be larger than |num|.
+  size_t num_alloc;
+  // comp is an optional comparison function.
+  stack_cmp_func comp;
+} _STACK;
+
+
+#define STACK_OF(type) struct stack_st_##type
+
+#define DECLARE_STACK_OF(type) STACK_OF(type);
+
+// These are the raw stack functions, you shouldn't be using them. Rather you
+// should be using the type stack macros implemented above.
+
+// sk_new creates a new, empty stack with the given comparison function, which
+// may be zero. It returns the new stack or NULL on allocation failure.
+OPENSSL_EXPORT _STACK *sk_new(stack_cmp_func comp);
+
+// sk_new_null creates a new, empty stack. It returns the new stack or NULL on
+// allocation failure.
+OPENSSL_EXPORT _STACK *sk_new_null(void);
+
+// sk_num returns the number of elements in |s|.
+OPENSSL_EXPORT size_t sk_num(const _STACK *sk);
+
+// sk_zero resets |sk| to the empty state but does nothing to free the
+// individual elements themselves.
+OPENSSL_EXPORT void sk_zero(_STACK *sk);
+
+// sk_value returns the |i|th pointer in |sk|, or NULL if |i| is out of
+// range.
+OPENSSL_EXPORT void *sk_value(const _STACK *sk, size_t i);
+
+// sk_set sets the |i|th pointer in |sk| to |p| and returns |p|. If |i| is out
+// of range, it returns NULL.
+OPENSSL_EXPORT void *sk_set(_STACK *sk, size_t i, void *p);
+
+// sk_free frees the given stack and array of pointers, but does nothing to
+// free the individual elements. Also see |sk_pop_free_ex|.
+OPENSSL_EXPORT void sk_free(_STACK *sk);
+
+// sk_pop_free_ex calls |free_func| on each element in the stack and then frees
+// the stack itself. Note this corresponds to |sk_FOO_pop_free|. It is named
+// |sk_pop_free_ex| as a workaround for existing code calling an older version
+// of |sk_pop_free|.
+OPENSSL_EXPORT void sk_pop_free_ex(_STACK *sk,
+                                   void (*call_free_func)(stack_free_func,
+                                                          void *),
+                                   stack_free_func free_func);
+
+// sk_insert inserts |p| into the stack at index |where|, moving existing
+// elements if needed. It returns the length of the new stack, or zero on
+// error.
+OPENSSL_EXPORT size_t sk_insert(_STACK *sk, void *p, size_t where);
+
+// sk_delete removes the pointer at index |where|, moving other elements down
+// if needed. It returns the removed pointer, or NULL if |where| is out of
+// range.
+OPENSSL_EXPORT void *sk_delete(_STACK *sk, size_t where);
+
+// sk_delete_ptr removes, at most, one instance of |p| from the stack based on
+// pointer equality. If an instance of |p| is found then |p| is returned,
+// otherwise it returns NULL.
+OPENSSL_EXPORT void *sk_delete_ptr(_STACK *sk, const void *p);
+
+// sk_find returns the first value in the stack equal to |p|. If a comparison
+// function has been set on the stack, equality is defined by it, otherwise
+// pointer equality is used. If the stack is sorted, then a binary search is
+// used, otherwise a linear search is performed. If a matching element is found,
+// its index is written to
+// |*out_index| (if |out_index| is not NULL) and one is returned. Otherwise zero
+// is returned.
+//
+// Note this differs from OpenSSL. The type signature is slightly different, and
+// OpenSSL's sk_find will implicitly sort |sk| if it has a comparison function
+// defined.
+OPENSSL_EXPORT int sk_find(const _STACK *sk, size_t *out_index, const void *p,
+                           int (*call_cmp_func)(stack_cmp_func, const void **,
+                                                const void **));
+
+// sk_shift removes and returns the first element in the stack, or returns NULL
+// if the stack is empty.
+OPENSSL_EXPORT void *sk_shift(_STACK *sk);
+
+// sk_push appends |p| to the stack and returns the length of the new stack, or
+// 0 on allocation failure.
+OPENSSL_EXPORT size_t sk_push(_STACK *sk, void *p);
+
+// sk_pop returns and removes the last element on the stack, or NULL if the
+// stack is empty.
+OPENSSL_EXPORT void *sk_pop(_STACK *sk);
+
+// sk_dup performs a shallow copy of a stack and returns the new stack, or NULL
+// on error.
+OPENSSL_EXPORT _STACK *sk_dup(const _STACK *sk);
+
+// sk_sort sorts the elements of |sk| into ascending order based on the
+// comparison function. The stack maintains a |sorted| flag and sorting an
+// already sorted stack is a no-op.
+OPENSSL_EXPORT void sk_sort(_STACK *sk);
+
+// sk_is_sorted returns one if |sk| is known to be sorted and zero
+// otherwise.
+OPENSSL_EXPORT int sk_is_sorted(const _STACK *sk);
+
+// sk_set_cmp_func sets the comparison function to be used by |sk| and returns
+// the previous one.
+OPENSSL_EXPORT stack_cmp_func sk_set_cmp_func(_STACK *sk, stack_cmp_func comp);
+
+// sk_deep_copy performs a copy of |sk| and of each of the non-NULL elements in
+// |sk| by using |copy_func|. If an error occurs, |free_func| is used to free
+// any copies already made and NULL is returned.
+OPENSSL_EXPORT _STACK *sk_deep_copy(
+    const _STACK *sk, void *(*call_copy_func)(stack_copy_func, void *),
+    stack_copy_func copy_func, void (*call_free_func)(stack_free_func, void *),
+    stack_free_func free_func);
+
+
+// Deprecated functions.
+
+// sk_pop_free behaves like |sk_pop_free_ex| but performs an invalid function
+// pointer cast. It exists because some existing callers called |sk_pop_free|
+// directly.
+//
+// TODO(davidben): Migrate callers to bssl::UniquePtr and remove this.
+OPENSSL_EXPORT void sk_pop_free(_STACK *sk, stack_free_func free_func);
+
+
+// Defining stack types.
+//
+// This set of macros is used to emit the typed functions that act on a
+// |STACK_OF(T)|.
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+namespace internal {
+template <typename T>
+struct StackTraits {};
+}
+BSSL_NAMESPACE_END
+}
+
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const) \
+  extern "C++" {                                            \
+  BSSL_NAMESPACE_BEGIN                                      \
+  namespace internal {                                      \
+  template <>                                               \
+  struct StackTraits<STACK_OF(name)> {                      \
+    static constexpr bool kIsStack = true;                  \
+    using Type = type;                                      \
+    static constexpr bool kIsConst = is_const;              \
+  };                                                        \
+  }                                                         \
+  BSSL_NAMESPACE_END                                        \
+  }
+
+#else
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const)
+#endif
+
+#define BORINGSSL_DEFINE_STACK_OF_IMPL(name, ptrtype, constptrtype)            \
+  DECLARE_STACK_OF(name)                                                       \
+                                                                               \
+  typedef void (*stack_##name##_free_func)(ptrtype);                           \
+  typedef ptrtype (*stack_##name##_copy_func)(ptrtype);                        \
+  typedef int (*stack_##name##_cmp_func)(constptrtype *a, constptrtype *b);    \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_call_free_func(stack_free_func free_func,    \
+                                                 void *ptr) {                  \
+    ((stack_##name##_free_func)free_func)((ptrtype)ptr);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void *sk_##name##_call_copy_func(stack_copy_func copy_func,   \
+                                                  void *ptr) {                 \
+    return (void *)((stack_##name##_copy_func)copy_func)((ptrtype)ptr);        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_call_cmp_func(                                \
+      stack_cmp_func cmp_func, const void **a, const void **b) {               \
+    constptrtype a_ptr = (constptrtype)*a;                                     \
+    constptrtype b_ptr = (constptrtype)*b;                                     \
+    return ((stack_##name##_cmp_func)cmp_func)(&a_ptr, &b_ptr);                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_new(stack_##name##_cmp_func comp) {                          \
+    return (STACK_OF(name) *)sk_new((stack_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *sk_##name##_new_null(void) {                  \
+    return (STACK_OF(name) *)sk_new_null();                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_num(const STACK_OF(name) *sk) {            \
+    return sk_num((const _STACK *)sk);                                         \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_zero(STACK_OF(name) *sk) {                   \
+    sk_zero((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_value(const STACK_OF(name) *sk,           \
+                                           size_t i) {                         \
+    return (ptrtype)sk_value((const _STACK *)sk, i);                           \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_set(STACK_OF(name) *sk, size_t i,         \
+                                         ptrtype p) {                          \
+    return (ptrtype)sk_set((_STACK *)sk, i, (void *)p);                        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_free(STACK_OF(name) * sk) {                  \
+    sk_free((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_pop_free(                                    \
+      STACK_OF(name) * sk, stack_##name##_free_func free_func) {               \
+    sk_pop_free_ex((_STACK *)sk, sk_##name##_call_free_func,                   \
+                   (stack_free_func)free_func);                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_insert(STACK_OF(name) *sk, ptrtype p,      \
+                                           size_t where) {                     \
+    return sk_insert((_STACK *)sk, (void *)p, where);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete(STACK_OF(name) *sk,                \
+                                            size_t where) {                    \
+    return (ptrtype)sk_delete((_STACK *)sk, where);                            \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete_ptr(STACK_OF(name) *sk,            \
+                                                constptrtype p) {              \
+    return (ptrtype)sk_delete_ptr((_STACK *)sk, (const void *)p);              \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_find(const STACK_OF(name) *sk,                \
+                                      size_t * out_index, constptrtype p) {    \
+    return sk_find((const _STACK *)sk, out_index, (const void *)p,             \
+                   sk_##name##_call_cmp_func);                                 \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_shift(STACK_OF(name) *sk) {               \
+    return (ptrtype)sk_shift((_STACK *)sk);                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_push(STACK_OF(name) *sk, ptrtype p) {      \
+    return sk_push((_STACK *)sk, (void *)p);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_pop(STACK_OF(name) *sk) {                 \
+    return (ptrtype)sk_pop((_STACK *)sk);                                      \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) * sk_##name##_dup(const STACK_OF(name) *sk) {  \
+    return (STACK_OF(name) *)sk_dup((const _STACK *)sk);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_sort(STACK_OF(name) *sk) {                   \
+    sk_sort((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_is_sorted(const STACK_OF(name) *sk) {         \
+    return sk_is_sorted((const _STACK *)sk);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE stack_##name##_cmp_func sk_##name##_set_cmp_func(             \
+      STACK_OF(name) *sk, stack_##name##_cmp_func comp) {                      \
+    return (stack_##name##_cmp_func)sk_set_cmp_func((_STACK *)sk,              \
+                                                    (stack_cmp_func)comp);     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_deep_copy(const STACK_OF(name) *sk,                          \
+                            ptrtype(*copy_func)(ptrtype),                      \
+                            void (*free_func)(ptrtype)) {                      \
+    return (STACK_OF(name) *)sk_deep_copy(                                     \
+        (const _STACK *)sk, sk_##name##_call_copy_func,                        \
+        (stack_copy_func)copy_func, sk_##name##_call_free_func,                \
+        (stack_free_func)free_func);                                           \
+  }
+
+// DEFINE_NAMED_STACK_OF defines |STACK_OF(name)| to be a stack whose elements
+// are |type| *.
+#define DEFINE_NAMED_STACK_OF(name, type)                    \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(name, type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(name, type, false)
+
+// DEFINE_STACK_OF defines |STACK_OF(type)| to be a stack whose elements are
+// |type| *.
+#define DEFINE_STACK_OF(type) DEFINE_NAMED_STACK_OF(type, type)
+
+// DEFINE_CONST_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are const |type| *.
+#define DEFINE_CONST_STACK_OF(type)                                \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, const type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(type, const type, true)
+
+// DEFINE_SPECIAL_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are |type|, where |type| must be a typedef for a pointer.
+#define DEFINE_SPECIAL_STACK_OF(type)                   \
+  OPENSSL_STATIC_ASSERT(sizeof(type) == sizeof(void *), \
+                        #type " is not a pointer");     \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, type, const type)
+
+
+typedef char *OPENSSL_STRING;
+
+DEFINE_STACK_OF(void)
+DEFINE_SPECIAL_STACK_OF(OPENSSL_STRING)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// Stacks defined with |DEFINE_CONST_STACK_OF| are freed with |sk_free|.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) { sk_free(reinterpret_cast<_STACK *>(sk)); }
+};
+
+// Stacks defined with |DEFINE_STACK_OF| are freed with |sk_pop_free| and the
+// corresponding type's deleter.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<!StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) {
+    // sk_FOO_pop_free is defined by macros and bound by name, so we cannot
+    // access it from C++ here.
+    using Type = typename StackTraits<Stack>::Type;
+    sk_pop_free_ex(reinterpret_cast<_STACK *>(sk),
+                   [](stack_free_func /* unused */, void *ptr) {
+                     DeleterImpl<Type>::Free(reinterpret_cast<Type *>(ptr));
+                   },
+                   nullptr);
+  }
+};
+
+template <typename Stack>
+class StackIteratorImpl {
+ public:
+  using Type = typename StackTraits<Stack>::Type;
+  // Iterators must be default-constructable.
+  StackIteratorImpl() : sk_(nullptr), idx_(0) {}
+  StackIteratorImpl(const Stack *sk, size_t idx) : sk_(sk), idx_(idx) {}
+
+  bool operator==(StackIteratorImpl other) const {
+    return sk_ == other.sk_ && idx_ == other.idx_;
+  }
+  bool operator!=(StackIteratorImpl other) const {
+    return !(*this == other);
+  }
+
+  Type *operator*() const {
+    return reinterpret_cast<Type *>(
+        sk_value(reinterpret_cast<const _STACK *>(sk_), idx_));
+  }
+
+  StackIteratorImpl &operator++(/* prefix */) {
+    idx_++;
+    return *this;
+  }
+
+  StackIteratorImpl operator++(int /* postfix */) {
+    StackIteratorImpl copy(*this);
+    ++(*this);
+    return copy;
+  }
+
+ private:
+  const Stack *sk_;
+  size_t idx_;
+};
+
+template <typename Stack>
+using StackIterator = typename std::enable_if<StackTraits<Stack>::kIsStack,
+                                              StackIteratorImpl<Stack>>::type;
+
+}  // namespace internal
+
+// PushToStack pushes |elem| to |sk|. It returns true on success and false on
+// allocation failure.
+template <typename Stack>
+inline
+    typename std::enable_if<!internal::StackTraits<Stack>::kIsConst, bool>::type
+    PushToStack(Stack *sk,
+                UniquePtr<typename internal::StackTraits<Stack>::Type> elem) {
+  if (!sk_push(reinterpret_cast<_STACK *>(sk), elem.get())) {
+    return false;
+  }
+  // sk_push takes ownership on success.
+  elem.release();
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+// Define begin() and end() for stack types so C++ range for loops work.
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> begin(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(sk, 0);
+}
+
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> end(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(
+      sk, sk_num(reinterpret_cast<const _STACK *>(sk)));
+}
+
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_STACK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.grpc_back
new file mode 100644
index 0000000..04e942c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/stack.h.grpc_back	
@@ -0,0 +1,542 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_STACK_H
+#define OPENSSL_HEADER_STACK_H
+
+#include <openssl/base.h>
+
+#include <openssl/type_check.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// A stack, in OpenSSL, is an array of pointers. They are the most commonly
+// used collection object.
+//
+// This file defines macros for type safe use of the stack functions. A stack
+// of a specific type of object has type |STACK_OF(type)|. This can be defined
+// (once) with |DEFINE_STACK_OF(type)| and declared where needed with
+// |DECLARE_STACK_OF(type)|. For example:
+//
+//   typedef struct foo_st {
+//     int bar;
+//   } FOO;
+//
+//   DEFINE_STACK_OF(FOO)
+//
+// Although note that the stack will contain /pointers/ to |FOO|.
+//
+// A macro will be defined for each of the sk_* functions below. For
+// STACK_OF(FOO), the macros would be sk_FOO_new, sk_FOO_pop etc.
+
+
+// stack_free_func is a function that frees an element in a stack. Note its
+// actual type is void (*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void (*stack_free_func)(void *ptr);
+
+// stack_copy_func is a function that copies an element in a stack. Note its
+// actual type is T *(*)(T *) for some T. Low-level |sk_*| functions will be
+// passed a type-specific wrapper to call it correctly.
+typedef void *(*stack_copy_func)(void *ptr);
+
+// stack_cmp_func is a comparison function that returns a value < 0, 0 or > 0
+// if |*a| is less than, equal to or greater than |*b|, respectively.  Note the
+// extra indirection - the function is given a pointer to a pointer to the
+// element. This differs from the usual qsort/bsearch comparison function.
+//
+// Note its actual type is int (*)(const T **, const T **). Low-level |sk_*|
+// functions will be passed a type-specific wrapper to call it correctly.
+typedef int (*stack_cmp_func)(const void **a, const void **b);
+
+// stack_st contains an array of pointers. It is not designed to be used
+// directly, rather the wrapper macros should be used.
+typedef struct stack_st {
+  // num contains the number of valid pointers in |data|.
+  size_t num;
+  void **data;
+  // sorted is non-zero if the values pointed to by |data| are in ascending
+  // order, based on |comp|.
+  int sorted;
+  // num_alloc contains the number of pointers allocated in the buffer pointed
+  // to by |data|, which may be larger than |num|.
+  size_t num_alloc;
+  // comp is an optional comparison function.
+  stack_cmp_func comp;
+} _STACK;
+
+
+#define STACK_OF(type) struct stack_st_##type
+
+#define DECLARE_STACK_OF(type) STACK_OF(type);
+
+// These are the raw stack functions, you shouldn't be using them. Rather you
+// should be using the type stack macros implemented above.
+
+// sk_new creates a new, empty stack with the given comparison function, which
+// may be zero. It returns the new stack or NULL on allocation failure.
+OPENSSL_EXPORT _STACK *sk_new(stack_cmp_func comp);
+
+// sk_new_null creates a new, empty stack. It returns the new stack or NULL on
+// allocation failure.
+OPENSSL_EXPORT _STACK *sk_new_null(void);
+
+// sk_num returns the number of elements in |s|.
+OPENSSL_EXPORT size_t sk_num(const _STACK *sk);
+
+// sk_zero resets |sk| to the empty state but does nothing to free the
+// individual elements themselves.
+OPENSSL_EXPORT void sk_zero(_STACK *sk);
+
+// sk_value returns the |i|th pointer in |sk|, or NULL if |i| is out of
+// range.
+OPENSSL_EXPORT void *sk_value(const _STACK *sk, size_t i);
+
+// sk_set sets the |i|th pointer in |sk| to |p| and returns |p|. If |i| is out
+// of range, it returns NULL.
+OPENSSL_EXPORT void *sk_set(_STACK *sk, size_t i, void *p);
+
+// sk_free frees the given stack and array of pointers, but does nothing to
+// free the individual elements. Also see |sk_pop_free_ex|.
+OPENSSL_EXPORT void sk_free(_STACK *sk);
+
+// sk_pop_free_ex calls |free_func| on each element in the stack and then frees
+// the stack itself. Note this corresponds to |sk_FOO_pop_free|. It is named
+// |sk_pop_free_ex| as a workaround for existing code calling an older version
+// of |sk_pop_free|.
+OPENSSL_EXPORT void sk_pop_free_ex(_STACK *sk,
+                                   void (*call_free_func)(stack_free_func,
+                                                          void *),
+                                   stack_free_func free_func);
+
+// sk_insert inserts |p| into the stack at index |where|, moving existing
+// elements if needed. It returns the length of the new stack, or zero on
+// error.
+OPENSSL_EXPORT size_t sk_insert(_STACK *sk, void *p, size_t where);
+
+// sk_delete removes the pointer at index |where|, moving other elements down
+// if needed. It returns the removed pointer, or NULL if |where| is out of
+// range.
+OPENSSL_EXPORT void *sk_delete(_STACK *sk, size_t where);
+
+// sk_delete_ptr removes, at most, one instance of |p| from the stack based on
+// pointer equality. If an instance of |p| is found then |p| is returned,
+// otherwise it returns NULL.
+OPENSSL_EXPORT void *sk_delete_ptr(_STACK *sk, const void *p);
+
+// sk_find returns the first value in the stack equal to |p|. If a comparison
+// function has been set on the stack, equality is defined by it, otherwise
+// pointer equality is used. If the stack is sorted, then a binary search is
+// used, otherwise a linear search is performed. If a matching element is found,
+// its index is written to
+// |*out_index| (if |out_index| is not NULL) and one is returned. Otherwise zero
+// is returned.
+//
+// Note this differs from OpenSSL. The type signature is slightly different, and
+// OpenSSL's sk_find will implicitly sort |sk| if it has a comparison function
+// defined.
+OPENSSL_EXPORT int sk_find(const _STACK *sk, size_t *out_index, const void *p,
+                           int (*call_cmp_func)(stack_cmp_func, const void **,
+                                                const void **));
+
+// sk_shift removes and returns the first element in the stack, or returns NULL
+// if the stack is empty.
+OPENSSL_EXPORT void *sk_shift(_STACK *sk);
+
+// sk_push appends |p| to the stack and returns the length of the new stack, or
+// 0 on allocation failure.
+OPENSSL_EXPORT size_t sk_push(_STACK *sk, void *p);
+
+// sk_pop returns and removes the last element on the stack, or NULL if the
+// stack is empty.
+OPENSSL_EXPORT void *sk_pop(_STACK *sk);
+
+// sk_dup performs a shallow copy of a stack and returns the new stack, or NULL
+// on error.
+OPENSSL_EXPORT _STACK *sk_dup(const _STACK *sk);
+
+// sk_sort sorts the elements of |sk| into ascending order based on the
+// comparison function. The stack maintains a |sorted| flag and sorting an
+// already sorted stack is a no-op.
+OPENSSL_EXPORT void sk_sort(_STACK *sk);
+
+// sk_is_sorted returns one if |sk| is known to be sorted and zero
+// otherwise.
+OPENSSL_EXPORT int sk_is_sorted(const _STACK *sk);
+
+// sk_set_cmp_func sets the comparison function to be used by |sk| and returns
+// the previous one.
+OPENSSL_EXPORT stack_cmp_func sk_set_cmp_func(_STACK *sk, stack_cmp_func comp);
+
+// sk_deep_copy performs a copy of |sk| and of each of the non-NULL elements in
+// |sk| by using |copy_func|. If an error occurs, |free_func| is used to free
+// any copies already made and NULL is returned.
+OPENSSL_EXPORT _STACK *sk_deep_copy(
+    const _STACK *sk, void *(*call_copy_func)(stack_copy_func, void *),
+    stack_copy_func copy_func, void (*call_free_func)(stack_free_func, void *),
+    stack_free_func free_func);
+
+
+// Deprecated functions.
+
+// sk_pop_free behaves like |sk_pop_free_ex| but performs an invalid function
+// pointer cast. It exists because some existing callers called |sk_pop_free|
+// directly.
+//
+// TODO(davidben): Migrate callers to bssl::UniquePtr and remove this.
+OPENSSL_EXPORT void sk_pop_free(_STACK *sk, stack_free_func free_func);
+
+
+// Defining stack types.
+//
+// This set of macros is used to emit the typed functions that act on a
+// |STACK_OF(T)|.
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+BSSL_NAMESPACE_BEGIN
+namespace internal {
+template <typename T>
+struct StackTraits {};
+}
+BSSL_NAMESPACE_END
+}
+
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const) \
+  extern "C++" {                                            \
+  BSSL_NAMESPACE_BEGIN                                      \
+  namespace internal {                                      \
+  template <>                                               \
+  struct StackTraits<STACK_OF(name)> {                      \
+    static constexpr bool kIsStack = true;                  \
+    using Type = type;                                      \
+    static constexpr bool kIsConst = is_const;              \
+  };                                                        \
+  }                                                         \
+  BSSL_NAMESPACE_END                                        \
+  }
+
+#else
+#define BORINGSSL_DEFINE_STACK_TRAITS(name, type, is_const)
+#endif
+
+#define BORINGSSL_DEFINE_STACK_OF_IMPL(name, ptrtype, constptrtype)            \
+  DECLARE_STACK_OF(name)                                                       \
+                                                                               \
+  typedef void (*stack_##name##_free_func)(ptrtype);                           \
+  typedef ptrtype (*stack_##name##_copy_func)(ptrtype);                        \
+  typedef int (*stack_##name##_cmp_func)(constptrtype *a, constptrtype *b);    \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_call_free_func(stack_free_func free_func,    \
+                                                 void *ptr) {                  \
+    ((stack_##name##_free_func)free_func)((ptrtype)ptr);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void *sk_##name##_call_copy_func(stack_copy_func copy_func,   \
+                                                  void *ptr) {                 \
+    return (void *)((stack_##name##_copy_func)copy_func)((ptrtype)ptr);        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_call_cmp_func(                                \
+      stack_cmp_func cmp_func, const void **a, const void **b) {               \
+    constptrtype a_ptr = (constptrtype)*a;                                     \
+    constptrtype b_ptr = (constptrtype)*b;                                     \
+    return ((stack_##name##_cmp_func)cmp_func)(&a_ptr, &b_ptr);                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_new(stack_##name##_cmp_func comp) {                          \
+    return (STACK_OF(name) *)sk_new((stack_cmp_func)comp);                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *sk_##name##_new_null(void) {                  \
+    return (STACK_OF(name) *)sk_new_null();                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_num(const STACK_OF(name) *sk) {            \
+    return sk_num((const _STACK *)sk);                                         \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_zero(STACK_OF(name) *sk) {                   \
+    sk_zero((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_value(const STACK_OF(name) *sk,           \
+                                           size_t i) {                         \
+    return (ptrtype)sk_value((const _STACK *)sk, i);                           \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_set(STACK_OF(name) *sk, size_t i,         \
+                                         ptrtype p) {                          \
+    return (ptrtype)sk_set((_STACK *)sk, i, (void *)p);                        \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_free(STACK_OF(name) * sk) {                  \
+    sk_free((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_pop_free(                                    \
+      STACK_OF(name) * sk, stack_##name##_free_func free_func) {               \
+    sk_pop_free_ex((_STACK *)sk, sk_##name##_call_free_func,                   \
+                   (stack_free_func)free_func);                                \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_insert(STACK_OF(name) *sk, ptrtype p,      \
+                                           size_t where) {                     \
+    return sk_insert((_STACK *)sk, (void *)p, where);                          \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete(STACK_OF(name) *sk,                \
+                                            size_t where) {                    \
+    return (ptrtype)sk_delete((_STACK *)sk, where);                            \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_delete_ptr(STACK_OF(name) *sk,            \
+                                                constptrtype p) {              \
+    return (ptrtype)sk_delete_ptr((_STACK *)sk, (const void *)p);              \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_find(const STACK_OF(name) *sk,                \
+                                      size_t * out_index, constptrtype p) {    \
+    return sk_find((const _STACK *)sk, out_index, (const void *)p,             \
+                   sk_##name##_call_cmp_func);                                 \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_shift(STACK_OF(name) *sk) {               \
+    return (ptrtype)sk_shift((_STACK *)sk);                                    \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE size_t sk_##name##_push(STACK_OF(name) *sk, ptrtype p) {      \
+    return sk_push((_STACK *)sk, (void *)p);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE ptrtype sk_##name##_pop(STACK_OF(name) *sk) {                 \
+    return (ptrtype)sk_pop((_STACK *)sk);                                      \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) * sk_##name##_dup(const STACK_OF(name) *sk) {  \
+    return (STACK_OF(name) *)sk_dup((const _STACK *)sk);                       \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE void sk_##name##_sort(STACK_OF(name) *sk) {                   \
+    sk_sort((_STACK *)sk);                                                     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE int sk_##name##_is_sorted(const STACK_OF(name) *sk) {         \
+    return sk_is_sorted((const _STACK *)sk);                                   \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE stack_##name##_cmp_func sk_##name##_set_cmp_func(             \
+      STACK_OF(name) *sk, stack_##name##_cmp_func comp) {                      \
+    return (stack_##name##_cmp_func)sk_set_cmp_func((_STACK *)sk,              \
+                                                    (stack_cmp_func)comp);     \
+  }                                                                            \
+                                                                               \
+  OPENSSL_INLINE STACK_OF(name) *                                              \
+      sk_##name##_deep_copy(const STACK_OF(name) *sk,                          \
+                            ptrtype(*copy_func)(ptrtype),                      \
+                            void (*free_func)(ptrtype)) {                      \
+    return (STACK_OF(name) *)sk_deep_copy(                                     \
+        (const _STACK *)sk, sk_##name##_call_copy_func,                        \
+        (stack_copy_func)copy_func, sk_##name##_call_free_func,                \
+        (stack_free_func)free_func);                                           \
+  }
+
+// DEFINE_NAMED_STACK_OF defines |STACK_OF(name)| to be a stack whose elements
+// are |type| *.
+#define DEFINE_NAMED_STACK_OF(name, type)                    \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(name, type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(name, type, false)
+
+// DEFINE_STACK_OF defines |STACK_OF(type)| to be a stack whose elements are
+// |type| *.
+#define DEFINE_STACK_OF(type) DEFINE_NAMED_STACK_OF(type, type)
+
+// DEFINE_CONST_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are const |type| *.
+#define DEFINE_CONST_STACK_OF(type)                                \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, const type *, const type *) \
+  BORINGSSL_DEFINE_STACK_TRAITS(type, const type, true)
+
+// DEFINE_SPECIAL_STACK_OF defines |STACK_OF(type)| to be a stack whose elements
+// are |type|, where |type| must be a typedef for a pointer.
+#define DEFINE_SPECIAL_STACK_OF(type)                   \
+  OPENSSL_STATIC_ASSERT(sizeof(type) == sizeof(void *), \
+                        #type " is not a pointer");     \
+  BORINGSSL_DEFINE_STACK_OF_IMPL(type, type, const type)
+
+
+typedef char *OPENSSL_STRING;
+
+DEFINE_STACK_OF(void)
+DEFINE_SPECIAL_STACK_OF(OPENSSL_STRING)
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+#include <type_traits>
+
+BSSL_NAMESPACE_BEGIN
+
+namespace internal {
+
+// Stacks defined with |DEFINE_CONST_STACK_OF| are freed with |sk_free|.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) { sk_free(reinterpret_cast<_STACK *>(sk)); }
+};
+
+// Stacks defined with |DEFINE_STACK_OF| are freed with |sk_pop_free| and the
+// corresponding type's deleter.
+template <typename Stack>
+struct DeleterImpl<
+    Stack, typename std::enable_if<!StackTraits<Stack>::kIsConst>::type> {
+  static void Free(Stack *sk) {
+    // sk_FOO_pop_free is defined by macros and bound by name, so we cannot
+    // access it from C++ here.
+    using Type = typename StackTraits<Stack>::Type;
+    sk_pop_free_ex(reinterpret_cast<_STACK *>(sk),
+                   [](stack_free_func /* unused */, void *ptr) {
+                     DeleterImpl<Type>::Free(reinterpret_cast<Type *>(ptr));
+                   },
+                   nullptr);
+  }
+};
+
+template <typename Stack>
+class StackIteratorImpl {
+ public:
+  using Type = typename StackTraits<Stack>::Type;
+  // Iterators must be default-constructable.
+  StackIteratorImpl() : sk_(nullptr), idx_(0) {}
+  StackIteratorImpl(const Stack *sk, size_t idx) : sk_(sk), idx_(idx) {}
+
+  bool operator==(StackIteratorImpl other) const {
+    return sk_ == other.sk_ && idx_ == other.idx_;
+  }
+  bool operator!=(StackIteratorImpl other) const {
+    return !(*this == other);
+  }
+
+  Type *operator*() const {
+    return reinterpret_cast<Type *>(
+        sk_value(reinterpret_cast<const _STACK *>(sk_), idx_));
+  }
+
+  StackIteratorImpl &operator++(/* prefix */) {
+    idx_++;
+    return *this;
+  }
+
+  StackIteratorImpl operator++(int /* postfix */) {
+    StackIteratorImpl copy(*this);
+    ++(*this);
+    return copy;
+  }
+
+ private:
+  const Stack *sk_;
+  size_t idx_;
+};
+
+template <typename Stack>
+using StackIterator = typename std::enable_if<StackTraits<Stack>::kIsStack,
+                                              StackIteratorImpl<Stack>>::type;
+
+}  // namespace internal
+
+// PushToStack pushes |elem| to |sk|. It returns true on success and false on
+// allocation failure.
+template <typename Stack>
+inline
+    typename std::enable_if<!internal::StackTraits<Stack>::kIsConst, bool>::type
+    PushToStack(Stack *sk,
+                UniquePtr<typename internal::StackTraits<Stack>::Type> elem) {
+  if (!sk_push(reinterpret_cast<_STACK *>(sk), elem.get())) {
+    return false;
+  }
+  // sk_push takes ownership on success.
+  elem.release();
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+// Define begin() and end() for stack types so C++ range for loops work.
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> begin(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(sk, 0);
+}
+
+template <typename Stack>
+inline bssl::internal::StackIterator<Stack> end(const Stack *sk) {
+  return bssl::internal::StackIterator<Stack>(
+      sk, sk_num(reinterpret_cast<const _STACK *>(sk)));
+}
+
+}  // extern C++
+#endif
+
+#endif  // OPENSSL_HEADER_STACK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h
new file mode 100644
index 0000000..cafd14b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h	
@@ -0,0 +1,191 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_THREAD_H
+#define OPENSSL_HEADER_THREAD_H
+
+#include <sys/types.h>
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_THREADS)
+typedef struct crypto_mutex_st {
+  char padding;  // Empty structs have different sizes in C and C++.
+} CRYPTO_MUTEX;
+#elif defined(OPENSSL_WINDOWS)
+// CRYPTO_MUTEX can appear in public header files so we really don't want to
+// pull in windows.h. It's statically asserted that this structure is large
+// enough to contain a Windows SRWLOCK by thread_win.c.
+typedef union crypto_mutex_st {
+  void *handle;
+} CRYPTO_MUTEX;
+#elif defined(__MACH__) && defined(__APPLE__)
+typedef pthread_rwlock_t CRYPTO_MUTEX;
+#else
+// It is reasonable to include pthread.h on non-Windows systems, however the
+// |pthread_rwlock_t| that we need is hidden under feature flags, and we can't
+// ensure that we'll be able to get it. It's statically asserted that this
+// structure is large enough to contain a |pthread_rwlock_t| by
+// thread_pthread.c.
+typedef union crypto_mutex_st {
+  double alignment;
+  uint8_t padding[3*sizeof(int) + 5*sizeof(unsigned) + 16 + 8];
+} CRYPTO_MUTEX;
+#endif
+
+// CRYPTO_refcount_t is the type of a reference count.
+//
+// Since some platforms use C11 atomics to access this, it should have the
+// _Atomic qualifier. However, this header is included by C++ programs as well
+// as C code that might not set -std=c11. So, in practice, it's not possible to
+// do that. Instead we statically assert that the size and native alignment of
+// a plain uint32_t and an _Atomic uint32_t are equal in refcount_c11.c.
+typedef uint32_t CRYPTO_refcount_t;
+
+
+// Deprecated functions.
+//
+// Historically, OpenSSL required callers to provide locking callbacks.
+// BoringSSL is thread-safe by default, but some old code calls these functions
+// and so no-op implementations are provided.
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CRYPTO_LOCK 1
+#define CRYPTO_UNLOCK 2
+#define CRYPTO_READ 4
+#define CRYPTO_WRITE 8
+
+// CRYPTO_num_locks returns one. (This is non-zero that callers who allocate
+// sizeof(lock) times this value don't get zero and then fail because malloc(0)
+// returned NULL.)
+OPENSSL_EXPORT int CRYPTO_num_locks(void);
+
+// CRYPTO_set_locking_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_locking_callback(
+    void (*func)(int mode, int lock_num, const char *file, int line));
+
+// CRYPTO_set_add_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_add_lock_callback(int (*func)(
+    int *num, int amount, int lock_num, const char *file, int line));
+
+// CRYPTO_get_locking_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
+                                                         const char *file,
+                                                         int line);
+
+// CRYPTO_get_lock_name returns a fixed, dummy string.
+OPENSSL_EXPORT const char *CRYPTO_get_lock_name(int lock_num);
+
+// CRYPTO_THREADID_set_callback returns one.
+OPENSSL_EXPORT int CRYPTO_THREADID_set_callback(
+    void (*threadid_func)(CRYPTO_THREADID *threadid));
+
+// CRYPTO_THREADID_set_numeric does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id,
+                                                unsigned long val);
+
+// CRYPTO_THREADID_set_pointer does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr);
+
+// CRYPTO_THREADID_current does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_current(CRYPTO_THREADID *id);
+
+// CRYPTO_set_id_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_id_callback(unsigned long (*func)(void));
+
+typedef struct {
+  int references;
+  struct CRYPTO_dynlock_value *data;
+} CRYPTO_dynlock;
+
+// CRYPTO_set_dynlock_create_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_create_callback(
+    struct CRYPTO_dynlock_value *(*dyn_create_function)(const char *file,
+                                                        int line));
+
+// CRYPTO_set_dynlock_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line));
+
+// CRYPTO_set_dynlock_destroy_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_destroy_callback(
+    void (*dyn_destroy_function)(struct CRYPTO_dynlock_value *l,
+                                 const char *file, int line));
+
+// CRYPTO_get_dynlock_create_callback returns NULL.
+OPENSSL_EXPORT struct CRYPTO_dynlock_value *(
+    *CRYPTO_get_dynlock_create_callback(void))(const char *file, int line);
+
+// CRYPTO_get_dynlock_lock_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_lock_callback(void))(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+// CRYPTO_get_dynlock_destroy_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_destroy_callback(void))(
+    struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.back
new file mode 100644
index 0000000..91706fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.back	
@@ -0,0 +1,191 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_THREAD_H
+#define OPENSSL_HEADER_THREAD_H
+
+#include <sys/types.h>
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_THREADS)
+typedef struct crypto_mutex_st {
+  char padding;  // Empty structs have different sizes in C and C++.
+} CRYPTO_MUTEX;
+#elif defined(OPENSSL_WINDOWS)
+// CRYPTO_MUTEX can appear in public header files so we really don't want to
+// pull in windows.h. It's statically asserted that this structure is large
+// enough to contain a Windows SRWLOCK by thread_win.c.
+typedef union crypto_mutex_st {
+  void *handle;
+} CRYPTO_MUTEX;
+#elif defined(__MACH__) && defined(__APPLE__)
+typedef pthread_rwlock_t CRYPTO_MUTEX;
+#else
+// It is reasonable to include pthread.h on non-Windows systems, however the
+// |pthread_rwlock_t| that we need is hidden under feature flags, and we can't
+// ensure that we'll be able to get it. It's statically asserted that this
+// structure is large enough to contain a |pthread_rwlock_t| by
+// thread_pthread.c.
+typedef union crypto_mutex_st {
+  double alignment;
+  uint8_t padding[3*sizeof(int) + 5*sizeof(unsigned) + 16 + 8];
+} CRYPTO_MUTEX;
+#endif
+
+// CRYPTO_refcount_t is the type of a reference count.
+//
+// Since some platforms use C11 atomics to access this, it should have the
+// _Atomic qualifier. However, this header is included by C++ programs as well
+// as C code that might not set -std=c11. So, in practice, it's not possible to
+// do that. Instead we statically assert that the size and native alignment of
+// a plain uint32_t and an _Atomic uint32_t are equal in refcount_c11.c.
+typedef uint32_t CRYPTO_refcount_t;
+
+
+// Deprecated functions.
+//
+// Historically, OpenSSL required callers to provide locking callbacks.
+// BoringSSL is thread-safe by default, but some old code calls these functions
+// and so no-op implementations are provided.
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CRYPTO_LOCK 1
+#define CRYPTO_UNLOCK 2
+#define CRYPTO_READ 4
+#define CRYPTO_WRITE 8
+
+// CRYPTO_num_locks returns one. (This is non-zero that callers who allocate
+// sizeof(lock) times this value don't get zero and then fail because malloc(0)
+// returned NULL.)
+OPENSSL_EXPORT int CRYPTO_num_locks(void);
+
+// CRYPTO_set_locking_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_locking_callback(
+    void (*func)(int mode, int lock_num, const char *file, int line));
+
+// CRYPTO_set_add_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_add_lock_callback(int (*func)(
+    int *num, int amount, int lock_num, const char *file, int line));
+
+// CRYPTO_get_locking_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
+                                                         const char *file,
+                                                         int line);
+
+// CRYPTO_get_lock_name returns a fixed, dummy string.
+OPENSSL_EXPORT const char *CRYPTO_get_lock_name(int lock_num);
+
+// CRYPTO_THREADID_set_callback returns one.
+OPENSSL_EXPORT int CRYPTO_THREADID_set_callback(
+    void (*threadid_func)(CRYPTO_THREADID *threadid));
+
+// CRYPTO_THREADID_set_numeric does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id,
+                                                unsigned long val);
+
+// CRYPTO_THREADID_set_pointer does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr);
+
+// CRYPTO_THREADID_current does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_current(CRYPTO_THREADID *id);
+
+// CRYPTO_set_id_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_id_callback(unsigned long (*func)(void));
+
+typedef struct {
+  int references;
+  struct CRYPTO_dynlock_value *data;
+} CRYPTO_dynlock;
+
+// CRYPTO_set_dynlock_create_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_create_callback(
+    struct CRYPTO_dynlock_value *(*dyn_create_function)(const char *file,
+                                                        int line));
+
+// CRYPTO_set_dynlock_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line));
+
+// CRYPTO_set_dynlock_destroy_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_destroy_callback(
+    void (*dyn_destroy_function)(struct CRYPTO_dynlock_value *l,
+                                 const char *file, int line));
+
+// CRYPTO_get_dynlock_create_callback returns NULL.
+OPENSSL_EXPORT struct CRYPTO_dynlock_value *(
+    *CRYPTO_get_dynlock_create_callback(void))(const char *file, int line);
+
+// CRYPTO_get_dynlock_lock_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_lock_callback(void))(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+// CRYPTO_get_dynlock_destroy_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_destroy_callback(void))(
+    struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.grpc_back
new file mode 100644
index 0000000..91706fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/thread.h.grpc_back	
@@ -0,0 +1,191 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_THREAD_H
+#define OPENSSL_HEADER_THREAD_H
+
+#include <sys/types.h>
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if !defined(OPENSSL_THREADS)
+typedef struct crypto_mutex_st {
+  char padding;  // Empty structs have different sizes in C and C++.
+} CRYPTO_MUTEX;
+#elif defined(OPENSSL_WINDOWS)
+// CRYPTO_MUTEX can appear in public header files so we really don't want to
+// pull in windows.h. It's statically asserted that this structure is large
+// enough to contain a Windows SRWLOCK by thread_win.c.
+typedef union crypto_mutex_st {
+  void *handle;
+} CRYPTO_MUTEX;
+#elif defined(__MACH__) && defined(__APPLE__)
+typedef pthread_rwlock_t CRYPTO_MUTEX;
+#else
+// It is reasonable to include pthread.h on non-Windows systems, however the
+// |pthread_rwlock_t| that we need is hidden under feature flags, and we can't
+// ensure that we'll be able to get it. It's statically asserted that this
+// structure is large enough to contain a |pthread_rwlock_t| by
+// thread_pthread.c.
+typedef union crypto_mutex_st {
+  double alignment;
+  uint8_t padding[3*sizeof(int) + 5*sizeof(unsigned) + 16 + 8];
+} CRYPTO_MUTEX;
+#endif
+
+// CRYPTO_refcount_t is the type of a reference count.
+//
+// Since some platforms use C11 atomics to access this, it should have the
+// _Atomic qualifier. However, this header is included by C++ programs as well
+// as C code that might not set -std=c11. So, in practice, it's not possible to
+// do that. Instead we statically assert that the size and native alignment of
+// a plain uint32_t and an _Atomic uint32_t are equal in refcount_c11.c.
+typedef uint32_t CRYPTO_refcount_t;
+
+
+// Deprecated functions.
+//
+// Historically, OpenSSL required callers to provide locking callbacks.
+// BoringSSL is thread-safe by default, but some old code calls these functions
+// and so no-op implementations are provided.
+
+// These defines do nothing but are provided to make old code easier to
+// compile.
+#define CRYPTO_LOCK 1
+#define CRYPTO_UNLOCK 2
+#define CRYPTO_READ 4
+#define CRYPTO_WRITE 8
+
+// CRYPTO_num_locks returns one. (This is non-zero that callers who allocate
+// sizeof(lock) times this value don't get zero and then fail because malloc(0)
+// returned NULL.)
+OPENSSL_EXPORT int CRYPTO_num_locks(void);
+
+// CRYPTO_set_locking_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_locking_callback(
+    void (*func)(int mode, int lock_num, const char *file, int line));
+
+// CRYPTO_set_add_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_add_lock_callback(int (*func)(
+    int *num, int amount, int lock_num, const char *file, int line));
+
+// CRYPTO_get_locking_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num,
+                                                         const char *file,
+                                                         int line);
+
+// CRYPTO_get_lock_name returns a fixed, dummy string.
+OPENSSL_EXPORT const char *CRYPTO_get_lock_name(int lock_num);
+
+// CRYPTO_THREADID_set_callback returns one.
+OPENSSL_EXPORT int CRYPTO_THREADID_set_callback(
+    void (*threadid_func)(CRYPTO_THREADID *threadid));
+
+// CRYPTO_THREADID_set_numeric does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id,
+                                                unsigned long val);
+
+// CRYPTO_THREADID_set_pointer does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr);
+
+// CRYPTO_THREADID_current does nothing.
+OPENSSL_EXPORT void CRYPTO_THREADID_current(CRYPTO_THREADID *id);
+
+// CRYPTO_set_id_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_id_callback(unsigned long (*func)(void));
+
+typedef struct {
+  int references;
+  struct CRYPTO_dynlock_value *data;
+} CRYPTO_dynlock;
+
+// CRYPTO_set_dynlock_create_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_create_callback(
+    struct CRYPTO_dynlock_value *(*dyn_create_function)(const char *file,
+                                                        int line));
+
+// CRYPTO_set_dynlock_lock_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line));
+
+// CRYPTO_set_dynlock_destroy_callback does nothing.
+OPENSSL_EXPORT void CRYPTO_set_dynlock_destroy_callback(
+    void (*dyn_destroy_function)(struct CRYPTO_dynlock_value *l,
+                                 const char *file, int line));
+
+// CRYPTO_get_dynlock_create_callback returns NULL.
+OPENSSL_EXPORT struct CRYPTO_dynlock_value *(
+    *CRYPTO_get_dynlock_create_callback(void))(const char *file, int line);
+
+// CRYPTO_get_dynlock_lock_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_lock_callback(void))(
+    int mode, struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+// CRYPTO_get_dynlock_destroy_callback returns NULL.
+OPENSSL_EXPORT void (*CRYPTO_get_dynlock_destroy_callback(void))(
+    struct CRYPTO_dynlock_value *l, const char *file, int line);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_THREAD_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h
new file mode 100644
index 0000000..0377670
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h	
@@ -0,0 +1,631 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_TLS1_H
+#define OPENSSL_HEADER_TLS1_H
+
+#include <openssl_grpc/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define TLS1_AD_END_OF_EARLY_DATA 1
+#define TLS1_AD_DECRYPTION_FAILED 21
+#define TLS1_AD_RECORD_OVERFLOW 22
+#define TLS1_AD_UNKNOWN_CA 48
+#define TLS1_AD_ACCESS_DENIED 49
+#define TLS1_AD_DECODE_ERROR 50
+#define TLS1_AD_DECRYPT_ERROR 51
+#define TLS1_AD_EXPORT_RESTRICTION 60
+#define TLS1_AD_PROTOCOL_VERSION 70
+#define TLS1_AD_INSUFFICIENT_SECURITY 71
+#define TLS1_AD_INTERNAL_ERROR 80
+#define TLS1_AD_USER_CANCELLED 90
+#define TLS1_AD_NO_RENEGOTIATION 100
+#define TLS1_AD_MISSING_EXTENSION 109
+// codes 110-114 are from RFC3546
+#define TLS1_AD_UNSUPPORTED_EXTENSION 110
+#define TLS1_AD_CERTIFICATE_UNOBTAINABLE 111
+#define TLS1_AD_UNRECOGNIZED_NAME 112
+#define TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE 113
+#define TLS1_AD_BAD_CERTIFICATE_HASH_VALUE 114
+#define TLS1_AD_UNKNOWN_PSK_IDENTITY 115
+#define TLS1_AD_CERTIFICATE_REQUIRED 116
+
+// ExtensionType values from RFC6066
+#define TLSEXT_TYPE_server_name 0
+#define TLSEXT_TYPE_status_request 5
+
+// ExtensionType values from RFC4492
+#define TLSEXT_TYPE_ec_point_formats 11
+
+// ExtensionType values from RFC5246
+#define TLSEXT_TYPE_signature_algorithms 13
+
+// ExtensionType value from RFC5764
+#define TLSEXT_TYPE_srtp 14
+
+// ExtensionType value from RFC7301
+#define TLSEXT_TYPE_application_layer_protocol_negotiation 16
+
+// ExtensionType value from RFC7685
+#define TLSEXT_TYPE_padding 21
+
+// ExtensionType value from RFC7627
+#define TLSEXT_TYPE_extended_master_secret 23
+
+// ExtensionType value from draft-ietf-tokbind-negotiation-10
+#define TLSEXT_TYPE_token_binding 24
+
+// ExtensionType value from draft-ietf-quic-tls. Note that this collides with
+// TLS-LTS and, based on scans, something else too. Since it's QUIC-only, that
+// shouldn't be a problem in practice.
+#define TLSEXT_TYPE_quic_transport_parameters 0xffa5
+
+// ExtensionType value assigned to
+// https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03
+#define TLSEXT_TYPE_cert_compression 27
+
+// ExtensionType value from RFC4507
+#define TLSEXT_TYPE_session_ticket 35
+
+// ExtensionType values from RFC8446
+#define TLSEXT_TYPE_supported_groups 10
+#define TLSEXT_TYPE_pre_shared_key 41
+#define TLSEXT_TYPE_early_data 42
+#define TLSEXT_TYPE_supported_versions 43
+#define TLSEXT_TYPE_cookie 44
+#define TLSEXT_TYPE_psk_key_exchange_modes 45
+#define TLSEXT_TYPE_certificate_authorities 47
+#define TLSEXT_TYPE_signature_algorithms_cert 50
+#define TLSEXT_TYPE_key_share 51
+
+// ExtensionType value from RFC5746
+#define TLSEXT_TYPE_renegotiate 0xff01
+
+// ExtensionType value from draft-ietf-tls-subcerts. This is not an IANA defined
+// extension number.
+#define TLSEXT_TYPE_delegated_credential 0xff02
+
+// ExtensionType value from RFC6962
+#define TLSEXT_TYPE_certificate_timestamp 18
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_next_proto_neg 13172
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_channel_id 30032
+
+// status request value from RFC 3546
+#define TLSEXT_STATUSTYPE_nothing (-1)
+#define TLSEXT_STATUSTYPE_ocsp 1
+
+// ECPointFormat values from RFC 4492
+#define TLSEXT_ECPOINTFORMAT_uncompressed 0
+#define TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime 1
+
+// Signature and hash algorithms from RFC 5246
+
+#define TLSEXT_signature_anonymous 0
+#define TLSEXT_signature_rsa 1
+#define TLSEXT_signature_dsa 2
+#define TLSEXT_signature_ecdsa 3
+
+#define TLSEXT_hash_none 0
+#define TLSEXT_hash_md5 1
+#define TLSEXT_hash_sha1 2
+#define TLSEXT_hash_sha224 3
+#define TLSEXT_hash_sha256 4
+#define TLSEXT_hash_sha384 5
+#define TLSEXT_hash_sha512 6
+
+// From https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03#section-3
+#define TLSEXT_cert_compression_zlib 1
+#define TLSEXT_cert_compression_brotli 2
+
+#define TLSEXT_MAXLEN_host_name 255
+
+// PSK ciphersuites from 4279
+#define TLS1_CK_PSK_WITH_RC4_128_SHA                    0x0300008A
+#define TLS1_CK_PSK_WITH_3DES_EDE_CBC_SHA               0x0300008B
+#define TLS1_CK_PSK_WITH_AES_128_CBC_SHA                0x0300008C
+#define TLS1_CK_PSK_WITH_AES_256_CBC_SHA                0x0300008D
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_CK_ECDHE_PSK_WITH_AES_128_CBC_SHA          0x0300C035
+#define TLS1_CK_ECDHE_PSK_WITH_AES_256_CBC_SHA          0x0300C036
+
+// Additional TLS ciphersuites from expired Internet Draft
+// draft-ietf-tls-56-bit-ciphersuites-01.txt
+// (available if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES is defined, see
+// s3_lib.c).  We actually treat them like SSL 3.0 ciphers, which we probably
+// shouldn't.  Note that the first two are actually not in the IDs.
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5 0x03000060      // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 0x03000061  // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA 0x03000062
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA 0x03000063
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA 0x03000064
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA 0x03000065
+#define TLS1_CK_DHE_DSS_WITH_RC4_128_SHA 0x03000066
+
+// AES ciphersuites from RFC3268
+
+#define TLS1_CK_RSA_WITH_AES_128_SHA 0x0300002F
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA 0x03000030
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA 0x03000031
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA 0x03000032
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA 0x03000033
+#define TLS1_CK_ADH_WITH_AES_128_SHA 0x03000034
+
+#define TLS1_CK_RSA_WITH_AES_256_SHA 0x03000035
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA 0x03000036
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA 0x03000037
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA 0x03000038
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA 0x03000039
+#define TLS1_CK_ADH_WITH_AES_256_SHA 0x0300003A
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_RSA_WITH_NULL_SHA256 0x0300003B
+#define TLS1_CK_RSA_WITH_AES_128_SHA256 0x0300003C
+#define TLS1_CK_RSA_WITH_AES_256_SHA256 0x0300003D
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA256 0x0300003E
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA256 0x0300003F
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA256 0x03000040
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000041
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000042
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000043
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000044
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000045
+#define TLS1_CK_ADH_WITH_CAMELLIA_128_CBC_SHA 0x03000046
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA256 0x03000067
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA256 0x03000068
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA256 0x03000069
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA256 0x0300006A
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA256 0x0300006B
+#define TLS1_CK_ADH_WITH_AES_128_SHA256 0x0300006C
+#define TLS1_CK_ADH_WITH_AES_256_SHA256 0x0300006D
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000084
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000085
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000086
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000087
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000088
+#define TLS1_CK_ADH_WITH_CAMELLIA_256_CBC_SHA 0x03000089
+
+// SEED ciphersuites from RFC4162
+#define TLS1_CK_RSA_WITH_SEED_SHA 0x03000096
+#define TLS1_CK_DH_DSS_WITH_SEED_SHA 0x03000097
+#define TLS1_CK_DH_RSA_WITH_SEED_SHA 0x03000098
+#define TLS1_CK_DHE_DSS_WITH_SEED_SHA 0x03000099
+#define TLS1_CK_DHE_RSA_WITH_SEED_SHA 0x0300009A
+#define TLS1_CK_ADH_WITH_SEED_SHA 0x0300009B
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_CK_RSA_WITH_AES_128_GCM_SHA256 0x0300009C
+#define TLS1_CK_RSA_WITH_AES_256_GCM_SHA384 0x0300009D
+#define TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256 0x0300009E
+#define TLS1_CK_DHE_RSA_WITH_AES_256_GCM_SHA384 0x0300009F
+#define TLS1_CK_DH_RSA_WITH_AES_128_GCM_SHA256 0x030000A0
+#define TLS1_CK_DH_RSA_WITH_AES_256_GCM_SHA384 0x030000A1
+#define TLS1_CK_DHE_DSS_WITH_AES_128_GCM_SHA256 0x030000A2
+#define TLS1_CK_DHE_DSS_WITH_AES_256_GCM_SHA384 0x030000A3
+#define TLS1_CK_DH_DSS_WITH_AES_128_GCM_SHA256 0x030000A4
+#define TLS1_CK_DH_DSS_WITH_AES_256_GCM_SHA384 0x030000A5
+#define TLS1_CK_ADH_WITH_AES_128_GCM_SHA256 0x030000A6
+#define TLS1_CK_ADH_WITH_AES_256_GCM_SHA384 0x030000A7
+
+// ECC ciphersuites from RFC4492
+#define TLS1_CK_ECDH_ECDSA_WITH_NULL_SHA 0x0300C001
+#define TLS1_CK_ECDH_ECDSA_WITH_RC4_128_SHA 0x0300C002
+#define TLS1_CK_ECDH_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C003
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_CBC_SHA 0x0300C004
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_CBC_SHA 0x0300C005
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_NULL_SHA 0x0300C006
+#define TLS1_CK_ECDHE_ECDSA_WITH_RC4_128_SHA 0x0300C007
+#define TLS1_CK_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C008
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA 0x0300C009
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA 0x0300C00A
+
+#define TLS1_CK_ECDH_RSA_WITH_NULL_SHA 0x0300C00B
+#define TLS1_CK_ECDH_RSA_WITH_RC4_128_SHA 0x0300C00C
+#define TLS1_CK_ECDH_RSA_WITH_DES_192_CBC3_SHA 0x0300C00D
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_CBC_SHA 0x0300C00E
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_CBC_SHA 0x0300C00F
+
+#define TLS1_CK_ECDHE_RSA_WITH_NULL_SHA 0x0300C010
+#define TLS1_CK_ECDHE_RSA_WITH_RC4_128_SHA 0x0300C011
+#define TLS1_CK_ECDHE_RSA_WITH_DES_192_CBC3_SHA 0x0300C012
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA 0x0300C013
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA 0x0300C014
+
+#define TLS1_CK_ECDH_anon_WITH_NULL_SHA 0x0300C015
+#define TLS1_CK_ECDH_anon_WITH_RC4_128_SHA 0x0300C016
+#define TLS1_CK_ECDH_anon_WITH_DES_192_CBC3_SHA 0x0300C017
+#define TLS1_CK_ECDH_anon_WITH_AES_128_CBC_SHA 0x0300C018
+#define TLS1_CK_ECDH_anon_WITH_AES_256_CBC_SHA 0x0300C019
+
+// SRP ciphersuites from RFC 5054
+#define TLS1_CK_SRP_SHA_WITH_3DES_EDE_CBC_SHA 0x0300C01A
+#define TLS1_CK_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA 0x0300C01B
+#define TLS1_CK_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA 0x0300C01C
+#define TLS1_CK_SRP_SHA_WITH_AES_128_CBC_SHA 0x0300C01D
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_128_CBC_SHA 0x0300C01E
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_128_CBC_SHA 0x0300C01F
+#define TLS1_CK_SRP_SHA_WITH_AES_256_CBC_SHA 0x0300C020
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_256_CBC_SHA 0x0300C021
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_256_CBC_SHA 0x0300C022
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_SHA256 0x0300C023
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_SHA384 0x0300C024
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_SHA256 0x0300C025
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_SHA384 0x0300C026
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_SHA256 0x0300C027
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_SHA384 0x0300C028
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_SHA256 0x0300C029
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_SHA384 0x0300C02A
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02B
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02C
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02D
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02E
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0x0300C02F
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0x0300C030
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_GCM_SHA256 0x0300C031
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_GCM_SHA384 0x0300C032
+
+// ChaCha20-Poly1305 cipher suites from RFC 7905.
+#define TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA8
+#define TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA9
+#define TLS1_CK_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 0x0300CCAC
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_CK_AES_128_GCM_SHA256 0x03001301
+#define TLS1_CK_AES_256_GCM_SHA384 0x03001302
+#define TLS1_CK_CHACHA20_POLY1305_SHA256 0x03001303
+
+// XXX
+// Inconsistency alert:
+// The OpenSSL names of ciphers with ephemeral DH here include the string
+// "DHE", while elsewhere it has always been "EDH".
+// (The alias for the list of all such ciphers also is "EDH".)
+// The specifications speak of "EDH"; maybe we should allow both forms
+// for everything.
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5 "EXP1024-RC4-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 "EXP1024-RC2-CBC-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA "EXP1024-DES-CBC-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA \
+  "EXP1024-DHE-DSS-DES-CBC-SHA"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA "EXP1024-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA "EXP1024-DHE-DSS-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA "DHE-DSS-RC4-SHA"
+
+// AES ciphersuites from RFC3268
+#define TLS1_TXT_RSA_WITH_AES_128_SHA "AES128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA "DH-DSS-AES128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA "DH-RSA-AES128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA "DHE-DSS-AES128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA "DHE-RSA-AES128-SHA"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA "ADH-AES128-SHA"
+
+#define TLS1_TXT_RSA_WITH_AES_256_SHA "AES256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA "DH-DSS-AES256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA "DH-RSA-AES256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA "DHE-DSS-AES256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA "DHE-RSA-AES256-SHA"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA "ADH-AES256-SHA"
+
+// ECC ciphersuites from RFC4492
+#define TLS1_TXT_ECDH_ECDSA_WITH_NULL_SHA "ECDH-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_RC4_128_SHA "ECDH-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_DES_192_CBC3_SHA "ECDH-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_CBC_SHA "ECDH-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_CBC_SHA "ECDH-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_NULL_SHA "ECDHE-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_RC4_128_SHA "ECDHE-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA "ECDHE-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA "ECDHE-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA "ECDHE-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_RSA_WITH_NULL_SHA "ECDH-RSA-NULL-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_RC4_128_SHA "ECDH-RSA-RC4-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_DES_192_CBC3_SHA "ECDH-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_CBC_SHA "ECDH-RSA-AES128-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_CBC_SHA "ECDH-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_NULL_SHA "ECDHE-RSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_RC4_128_SHA "ECDHE-RSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_DES_192_CBC3_SHA "ECDHE-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA "ECDHE-RSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA "ECDHE-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_anon_WITH_NULL_SHA "AECDH-NULL-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_RC4_128_SHA "AECDH-RC4-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_DES_192_CBC3_SHA "AECDH-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_128_CBC_SHA "AECDH-AES128-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_256_CBC_SHA "AECDH-AES256-SHA"
+
+// PSK ciphersuites from RFC 4279
+#define TLS1_TXT_PSK_WITH_RC4_128_SHA "PSK-RC4-SHA"
+#define TLS1_TXT_PSK_WITH_3DES_EDE_CBC_SHA "PSK-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_128_CBC_SHA "PSK-AES128-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_256_CBC_SHA "PSK-AES256-CBC-SHA"
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_128_CBC_SHA "ECDHE-PSK-AES128-CBC-SHA"
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_256_CBC_SHA "ECDHE-PSK-AES256-CBC-SHA"
+
+// SRP ciphersuite from RFC 5054
+#define TLS1_TXT_SRP_SHA_WITH_3DES_EDE_CBC_SHA "SRP-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA "SRP-RSA-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA "SRP-DSS-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_128_CBC_SHA "SRP-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_128_CBC_SHA "SRP-RSA-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_128_CBC_SHA "SRP-DSS-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_256_CBC_SHA "SRP-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_256_CBC_SHA "SRP-RSA-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_256_CBC_SHA "SRP-DSS-AES-256-CBC-SHA"
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_TXT_RSA_WITH_CAMELLIA_128_CBC_SHA "CAMELLIA128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_128_CBC_SHA "DH-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_128_CBC_SHA "DH-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA "DHE-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA "DHE-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_128_CBC_SHA "ADH-CAMELLIA128-SHA"
+
+#define TLS1_TXT_RSA_WITH_CAMELLIA_256_CBC_SHA "CAMELLIA256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_256_CBC_SHA "DH-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_256_CBC_SHA "DH-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA "DHE-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA "DHE-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_256_CBC_SHA "ADH-CAMELLIA256-SHA"
+
+// SEED ciphersuites from RFC4162
+#define TLS1_TXT_RSA_WITH_SEED_SHA "SEED-SHA"
+#define TLS1_TXT_DH_DSS_WITH_SEED_SHA "DH-DSS-SEED-SHA"
+#define TLS1_TXT_DH_RSA_WITH_SEED_SHA "DH-RSA-SEED-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_SEED_SHA "DHE-DSS-SEED-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_SEED_SHA "DHE-RSA-SEED-SHA"
+#define TLS1_TXT_ADH_WITH_SEED_SHA "ADH-SEED-SHA"
+
+// TLS v1.2 ciphersuites
+#define TLS1_TXT_RSA_WITH_NULL_SHA256 "NULL-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_128_SHA256 "AES128-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_SHA256 "AES256-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA256 "DH-DSS-AES128-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA256 "DH-RSA-AES128-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA256 "DHE-DSS-AES128-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA256 "DHE-RSA-AES128-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA256 "DH-DSS-AES256-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA256 "DH-RSA-AES256-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA256 "DHE-DSS-AES256-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA256 "DHE-RSA-AES256-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA256 "ADH-AES128-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA256 "ADH-AES256-SHA256"
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256 "AES128-GCM-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384 "AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_GCM_SHA256 "DHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_GCM_SHA384 "DHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_GCM_SHA256 "DH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_GCM_SHA384 "DH-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_GCM_SHA256 "DHE-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_GCM_SHA384 "DHE-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_GCM_SHA256 "DH-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_GCM_SHA384 "DH-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_ADH_WITH_AES_128_GCM_SHA256 "ADH-AES128-GCM-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_GCM_SHA384 "ADH-AES256-GCM-SHA384"
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_SHA256 "ECDHE-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_SHA384 "ECDHE-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_SHA256 "ECDH-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_SHA384 "ECDH-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_SHA256 "ECDHE-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_SHA384 "ECDHE-RSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_SHA256 "ECDH-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_SHA384 "ECDH-RSA-AES256-SHA384"
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDHE-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDHE-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDH-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDH-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256 "ECDHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384 "ECDHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_GCM_SHA256 "ECDH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_GCM_SHA384 "ECDH-RSA-AES256-GCM-SHA384"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-RSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-ECDSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-PSK-CHACHA20-POLY1305"
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_TXT_AES_128_GCM_SHA256 "TLS_AES_128_GCM_SHA256"
+#define TLS1_TXT_AES_256_GCM_SHA384 "TLS_AES_256_GCM_SHA384"
+#define TLS1_TXT_CHACHA20_POLY1305_SHA256 "TLS_CHACHA20_POLY1305_SHA256"
+
+
+#define TLS_CT_RSA_SIGN 1
+#define TLS_CT_DSS_SIGN 2
+#define TLS_CT_RSA_FIXED_DH 3
+#define TLS_CT_DSS_FIXED_DH 4
+#define TLS_CT_ECDSA_SIGN 64
+#define TLS_CT_RSA_FIXED_ECDH 65
+#define TLS_CT_ECDSA_FIXED_ECDH 66
+
+#define TLS_MD_MAX_CONST_SIZE 20
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TLS1_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.back
new file mode 100644
index 0000000..8b61d5a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.back	
@@ -0,0 +1,631 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_TLS1_H
+#define OPENSSL_HEADER_TLS1_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define TLS1_AD_END_OF_EARLY_DATA 1
+#define TLS1_AD_DECRYPTION_FAILED 21
+#define TLS1_AD_RECORD_OVERFLOW 22
+#define TLS1_AD_UNKNOWN_CA 48
+#define TLS1_AD_ACCESS_DENIED 49
+#define TLS1_AD_DECODE_ERROR 50
+#define TLS1_AD_DECRYPT_ERROR 51
+#define TLS1_AD_EXPORT_RESTRICTION 60
+#define TLS1_AD_PROTOCOL_VERSION 70
+#define TLS1_AD_INSUFFICIENT_SECURITY 71
+#define TLS1_AD_INTERNAL_ERROR 80
+#define TLS1_AD_USER_CANCELLED 90
+#define TLS1_AD_NO_RENEGOTIATION 100
+#define TLS1_AD_MISSING_EXTENSION 109
+// codes 110-114 are from RFC3546
+#define TLS1_AD_UNSUPPORTED_EXTENSION 110
+#define TLS1_AD_CERTIFICATE_UNOBTAINABLE 111
+#define TLS1_AD_UNRECOGNIZED_NAME 112
+#define TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE 113
+#define TLS1_AD_BAD_CERTIFICATE_HASH_VALUE 114
+#define TLS1_AD_UNKNOWN_PSK_IDENTITY 115
+#define TLS1_AD_CERTIFICATE_REQUIRED 116
+
+// ExtensionType values from RFC6066
+#define TLSEXT_TYPE_server_name 0
+#define TLSEXT_TYPE_status_request 5
+
+// ExtensionType values from RFC4492
+#define TLSEXT_TYPE_ec_point_formats 11
+
+// ExtensionType values from RFC5246
+#define TLSEXT_TYPE_signature_algorithms 13
+
+// ExtensionType value from RFC5764
+#define TLSEXT_TYPE_srtp 14
+
+// ExtensionType value from RFC7301
+#define TLSEXT_TYPE_application_layer_protocol_negotiation 16
+
+// ExtensionType value from RFC7685
+#define TLSEXT_TYPE_padding 21
+
+// ExtensionType value from RFC7627
+#define TLSEXT_TYPE_extended_master_secret 23
+
+// ExtensionType value from draft-ietf-tokbind-negotiation-10
+#define TLSEXT_TYPE_token_binding 24
+
+// ExtensionType value from draft-ietf-quic-tls. Note that this collides with
+// TLS-LTS and, based on scans, something else too. Since it's QUIC-only, that
+// shouldn't be a problem in practice.
+#define TLSEXT_TYPE_quic_transport_parameters 0xffa5
+
+// ExtensionType value assigned to
+// https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03
+#define TLSEXT_TYPE_cert_compression 27
+
+// ExtensionType value from RFC4507
+#define TLSEXT_TYPE_session_ticket 35
+
+// ExtensionType values from RFC8446
+#define TLSEXT_TYPE_supported_groups 10
+#define TLSEXT_TYPE_pre_shared_key 41
+#define TLSEXT_TYPE_early_data 42
+#define TLSEXT_TYPE_supported_versions 43
+#define TLSEXT_TYPE_cookie 44
+#define TLSEXT_TYPE_psk_key_exchange_modes 45
+#define TLSEXT_TYPE_certificate_authorities 47
+#define TLSEXT_TYPE_signature_algorithms_cert 50
+#define TLSEXT_TYPE_key_share 51
+
+// ExtensionType value from RFC5746
+#define TLSEXT_TYPE_renegotiate 0xff01
+
+// ExtensionType value from draft-ietf-tls-subcerts. This is not an IANA defined
+// extension number.
+#define TLSEXT_TYPE_delegated_credential 0xff02
+
+// ExtensionType value from RFC6962
+#define TLSEXT_TYPE_certificate_timestamp 18
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_next_proto_neg 13172
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_channel_id 30032
+
+// status request value from RFC 3546
+#define TLSEXT_STATUSTYPE_nothing (-1)
+#define TLSEXT_STATUSTYPE_ocsp 1
+
+// ECPointFormat values from RFC 4492
+#define TLSEXT_ECPOINTFORMAT_uncompressed 0
+#define TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime 1
+
+// Signature and hash algorithms from RFC 5246
+
+#define TLSEXT_signature_anonymous 0
+#define TLSEXT_signature_rsa 1
+#define TLSEXT_signature_dsa 2
+#define TLSEXT_signature_ecdsa 3
+
+#define TLSEXT_hash_none 0
+#define TLSEXT_hash_md5 1
+#define TLSEXT_hash_sha1 2
+#define TLSEXT_hash_sha224 3
+#define TLSEXT_hash_sha256 4
+#define TLSEXT_hash_sha384 5
+#define TLSEXT_hash_sha512 6
+
+// From https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03#section-3
+#define TLSEXT_cert_compression_zlib 1
+#define TLSEXT_cert_compression_brotli 2
+
+#define TLSEXT_MAXLEN_host_name 255
+
+// PSK ciphersuites from 4279
+#define TLS1_CK_PSK_WITH_RC4_128_SHA                    0x0300008A
+#define TLS1_CK_PSK_WITH_3DES_EDE_CBC_SHA               0x0300008B
+#define TLS1_CK_PSK_WITH_AES_128_CBC_SHA                0x0300008C
+#define TLS1_CK_PSK_WITH_AES_256_CBC_SHA                0x0300008D
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_CK_ECDHE_PSK_WITH_AES_128_CBC_SHA          0x0300C035
+#define TLS1_CK_ECDHE_PSK_WITH_AES_256_CBC_SHA          0x0300C036
+
+// Additional TLS ciphersuites from expired Internet Draft
+// draft-ietf-tls-56-bit-ciphersuites-01.txt
+// (available if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES is defined, see
+// s3_lib.c).  We actually treat them like SSL 3.0 ciphers, which we probably
+// shouldn't.  Note that the first two are actually not in the IDs.
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5 0x03000060      // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 0x03000061  // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA 0x03000062
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA 0x03000063
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA 0x03000064
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA 0x03000065
+#define TLS1_CK_DHE_DSS_WITH_RC4_128_SHA 0x03000066
+
+// AES ciphersuites from RFC3268
+
+#define TLS1_CK_RSA_WITH_AES_128_SHA 0x0300002F
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA 0x03000030
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA 0x03000031
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA 0x03000032
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA 0x03000033
+#define TLS1_CK_ADH_WITH_AES_128_SHA 0x03000034
+
+#define TLS1_CK_RSA_WITH_AES_256_SHA 0x03000035
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA 0x03000036
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA 0x03000037
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA 0x03000038
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA 0x03000039
+#define TLS1_CK_ADH_WITH_AES_256_SHA 0x0300003A
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_RSA_WITH_NULL_SHA256 0x0300003B
+#define TLS1_CK_RSA_WITH_AES_128_SHA256 0x0300003C
+#define TLS1_CK_RSA_WITH_AES_256_SHA256 0x0300003D
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA256 0x0300003E
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA256 0x0300003F
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA256 0x03000040
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000041
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000042
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000043
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000044
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000045
+#define TLS1_CK_ADH_WITH_CAMELLIA_128_CBC_SHA 0x03000046
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA256 0x03000067
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA256 0x03000068
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA256 0x03000069
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA256 0x0300006A
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA256 0x0300006B
+#define TLS1_CK_ADH_WITH_AES_128_SHA256 0x0300006C
+#define TLS1_CK_ADH_WITH_AES_256_SHA256 0x0300006D
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000084
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000085
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000086
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000087
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000088
+#define TLS1_CK_ADH_WITH_CAMELLIA_256_CBC_SHA 0x03000089
+
+// SEED ciphersuites from RFC4162
+#define TLS1_CK_RSA_WITH_SEED_SHA 0x03000096
+#define TLS1_CK_DH_DSS_WITH_SEED_SHA 0x03000097
+#define TLS1_CK_DH_RSA_WITH_SEED_SHA 0x03000098
+#define TLS1_CK_DHE_DSS_WITH_SEED_SHA 0x03000099
+#define TLS1_CK_DHE_RSA_WITH_SEED_SHA 0x0300009A
+#define TLS1_CK_ADH_WITH_SEED_SHA 0x0300009B
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_CK_RSA_WITH_AES_128_GCM_SHA256 0x0300009C
+#define TLS1_CK_RSA_WITH_AES_256_GCM_SHA384 0x0300009D
+#define TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256 0x0300009E
+#define TLS1_CK_DHE_RSA_WITH_AES_256_GCM_SHA384 0x0300009F
+#define TLS1_CK_DH_RSA_WITH_AES_128_GCM_SHA256 0x030000A0
+#define TLS1_CK_DH_RSA_WITH_AES_256_GCM_SHA384 0x030000A1
+#define TLS1_CK_DHE_DSS_WITH_AES_128_GCM_SHA256 0x030000A2
+#define TLS1_CK_DHE_DSS_WITH_AES_256_GCM_SHA384 0x030000A3
+#define TLS1_CK_DH_DSS_WITH_AES_128_GCM_SHA256 0x030000A4
+#define TLS1_CK_DH_DSS_WITH_AES_256_GCM_SHA384 0x030000A5
+#define TLS1_CK_ADH_WITH_AES_128_GCM_SHA256 0x030000A6
+#define TLS1_CK_ADH_WITH_AES_256_GCM_SHA384 0x030000A7
+
+// ECC ciphersuites from RFC4492
+#define TLS1_CK_ECDH_ECDSA_WITH_NULL_SHA 0x0300C001
+#define TLS1_CK_ECDH_ECDSA_WITH_RC4_128_SHA 0x0300C002
+#define TLS1_CK_ECDH_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C003
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_CBC_SHA 0x0300C004
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_CBC_SHA 0x0300C005
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_NULL_SHA 0x0300C006
+#define TLS1_CK_ECDHE_ECDSA_WITH_RC4_128_SHA 0x0300C007
+#define TLS1_CK_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C008
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA 0x0300C009
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA 0x0300C00A
+
+#define TLS1_CK_ECDH_RSA_WITH_NULL_SHA 0x0300C00B
+#define TLS1_CK_ECDH_RSA_WITH_RC4_128_SHA 0x0300C00C
+#define TLS1_CK_ECDH_RSA_WITH_DES_192_CBC3_SHA 0x0300C00D
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_CBC_SHA 0x0300C00E
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_CBC_SHA 0x0300C00F
+
+#define TLS1_CK_ECDHE_RSA_WITH_NULL_SHA 0x0300C010
+#define TLS1_CK_ECDHE_RSA_WITH_RC4_128_SHA 0x0300C011
+#define TLS1_CK_ECDHE_RSA_WITH_DES_192_CBC3_SHA 0x0300C012
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA 0x0300C013
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA 0x0300C014
+
+#define TLS1_CK_ECDH_anon_WITH_NULL_SHA 0x0300C015
+#define TLS1_CK_ECDH_anon_WITH_RC4_128_SHA 0x0300C016
+#define TLS1_CK_ECDH_anon_WITH_DES_192_CBC3_SHA 0x0300C017
+#define TLS1_CK_ECDH_anon_WITH_AES_128_CBC_SHA 0x0300C018
+#define TLS1_CK_ECDH_anon_WITH_AES_256_CBC_SHA 0x0300C019
+
+// SRP ciphersuites from RFC 5054
+#define TLS1_CK_SRP_SHA_WITH_3DES_EDE_CBC_SHA 0x0300C01A
+#define TLS1_CK_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA 0x0300C01B
+#define TLS1_CK_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA 0x0300C01C
+#define TLS1_CK_SRP_SHA_WITH_AES_128_CBC_SHA 0x0300C01D
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_128_CBC_SHA 0x0300C01E
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_128_CBC_SHA 0x0300C01F
+#define TLS1_CK_SRP_SHA_WITH_AES_256_CBC_SHA 0x0300C020
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_256_CBC_SHA 0x0300C021
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_256_CBC_SHA 0x0300C022
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_SHA256 0x0300C023
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_SHA384 0x0300C024
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_SHA256 0x0300C025
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_SHA384 0x0300C026
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_SHA256 0x0300C027
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_SHA384 0x0300C028
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_SHA256 0x0300C029
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_SHA384 0x0300C02A
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02B
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02C
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02D
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02E
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0x0300C02F
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0x0300C030
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_GCM_SHA256 0x0300C031
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_GCM_SHA384 0x0300C032
+
+// ChaCha20-Poly1305 cipher suites from RFC 7905.
+#define TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA8
+#define TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA9
+#define TLS1_CK_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 0x0300CCAC
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_CK_AES_128_GCM_SHA256 0x03001301
+#define TLS1_CK_AES_256_GCM_SHA384 0x03001302
+#define TLS1_CK_CHACHA20_POLY1305_SHA256 0x03001303
+
+// XXX
+// Inconsistency alert:
+// The OpenSSL names of ciphers with ephemeral DH here include the string
+// "DHE", while elsewhere it has always been "EDH".
+// (The alias for the list of all such ciphers also is "EDH".)
+// The specifications speak of "EDH"; maybe we should allow both forms
+// for everything.
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5 "EXP1024-RC4-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 "EXP1024-RC2-CBC-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA "EXP1024-DES-CBC-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA \
+  "EXP1024-DHE-DSS-DES-CBC-SHA"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA "EXP1024-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA "EXP1024-DHE-DSS-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA "DHE-DSS-RC4-SHA"
+
+// AES ciphersuites from RFC3268
+#define TLS1_TXT_RSA_WITH_AES_128_SHA "AES128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA "DH-DSS-AES128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA "DH-RSA-AES128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA "DHE-DSS-AES128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA "DHE-RSA-AES128-SHA"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA "ADH-AES128-SHA"
+
+#define TLS1_TXT_RSA_WITH_AES_256_SHA "AES256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA "DH-DSS-AES256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA "DH-RSA-AES256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA "DHE-DSS-AES256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA "DHE-RSA-AES256-SHA"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA "ADH-AES256-SHA"
+
+// ECC ciphersuites from RFC4492
+#define TLS1_TXT_ECDH_ECDSA_WITH_NULL_SHA "ECDH-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_RC4_128_SHA "ECDH-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_DES_192_CBC3_SHA "ECDH-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_CBC_SHA "ECDH-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_CBC_SHA "ECDH-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_NULL_SHA "ECDHE-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_RC4_128_SHA "ECDHE-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA "ECDHE-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA "ECDHE-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA "ECDHE-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_RSA_WITH_NULL_SHA "ECDH-RSA-NULL-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_RC4_128_SHA "ECDH-RSA-RC4-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_DES_192_CBC3_SHA "ECDH-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_CBC_SHA "ECDH-RSA-AES128-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_CBC_SHA "ECDH-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_NULL_SHA "ECDHE-RSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_RC4_128_SHA "ECDHE-RSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_DES_192_CBC3_SHA "ECDHE-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA "ECDHE-RSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA "ECDHE-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_anon_WITH_NULL_SHA "AECDH-NULL-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_RC4_128_SHA "AECDH-RC4-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_DES_192_CBC3_SHA "AECDH-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_128_CBC_SHA "AECDH-AES128-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_256_CBC_SHA "AECDH-AES256-SHA"
+
+// PSK ciphersuites from RFC 4279
+#define TLS1_TXT_PSK_WITH_RC4_128_SHA "PSK-RC4-SHA"
+#define TLS1_TXT_PSK_WITH_3DES_EDE_CBC_SHA "PSK-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_128_CBC_SHA "PSK-AES128-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_256_CBC_SHA "PSK-AES256-CBC-SHA"
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_128_CBC_SHA "ECDHE-PSK-AES128-CBC-SHA"
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_256_CBC_SHA "ECDHE-PSK-AES256-CBC-SHA"
+
+// SRP ciphersuite from RFC 5054
+#define TLS1_TXT_SRP_SHA_WITH_3DES_EDE_CBC_SHA "SRP-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA "SRP-RSA-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA "SRP-DSS-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_128_CBC_SHA "SRP-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_128_CBC_SHA "SRP-RSA-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_128_CBC_SHA "SRP-DSS-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_256_CBC_SHA "SRP-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_256_CBC_SHA "SRP-RSA-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_256_CBC_SHA "SRP-DSS-AES-256-CBC-SHA"
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_TXT_RSA_WITH_CAMELLIA_128_CBC_SHA "CAMELLIA128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_128_CBC_SHA "DH-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_128_CBC_SHA "DH-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA "DHE-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA "DHE-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_128_CBC_SHA "ADH-CAMELLIA128-SHA"
+
+#define TLS1_TXT_RSA_WITH_CAMELLIA_256_CBC_SHA "CAMELLIA256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_256_CBC_SHA "DH-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_256_CBC_SHA "DH-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA "DHE-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA "DHE-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_256_CBC_SHA "ADH-CAMELLIA256-SHA"
+
+// SEED ciphersuites from RFC4162
+#define TLS1_TXT_RSA_WITH_SEED_SHA "SEED-SHA"
+#define TLS1_TXT_DH_DSS_WITH_SEED_SHA "DH-DSS-SEED-SHA"
+#define TLS1_TXT_DH_RSA_WITH_SEED_SHA "DH-RSA-SEED-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_SEED_SHA "DHE-DSS-SEED-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_SEED_SHA "DHE-RSA-SEED-SHA"
+#define TLS1_TXT_ADH_WITH_SEED_SHA "ADH-SEED-SHA"
+
+// TLS v1.2 ciphersuites
+#define TLS1_TXT_RSA_WITH_NULL_SHA256 "NULL-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_128_SHA256 "AES128-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_SHA256 "AES256-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA256 "DH-DSS-AES128-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA256 "DH-RSA-AES128-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA256 "DHE-DSS-AES128-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA256 "DHE-RSA-AES128-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA256 "DH-DSS-AES256-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA256 "DH-RSA-AES256-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA256 "DHE-DSS-AES256-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA256 "DHE-RSA-AES256-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA256 "ADH-AES128-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA256 "ADH-AES256-SHA256"
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256 "AES128-GCM-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384 "AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_GCM_SHA256 "DHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_GCM_SHA384 "DHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_GCM_SHA256 "DH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_GCM_SHA384 "DH-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_GCM_SHA256 "DHE-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_GCM_SHA384 "DHE-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_GCM_SHA256 "DH-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_GCM_SHA384 "DH-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_ADH_WITH_AES_128_GCM_SHA256 "ADH-AES128-GCM-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_GCM_SHA384 "ADH-AES256-GCM-SHA384"
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_SHA256 "ECDHE-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_SHA384 "ECDHE-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_SHA256 "ECDH-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_SHA384 "ECDH-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_SHA256 "ECDHE-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_SHA384 "ECDHE-RSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_SHA256 "ECDH-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_SHA384 "ECDH-RSA-AES256-SHA384"
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDHE-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDHE-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDH-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDH-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256 "ECDHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384 "ECDHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_GCM_SHA256 "ECDH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_GCM_SHA384 "ECDH-RSA-AES256-GCM-SHA384"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-RSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-ECDSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-PSK-CHACHA20-POLY1305"
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_TXT_AES_128_GCM_SHA256 "TLS_AES_128_GCM_SHA256"
+#define TLS1_TXT_AES_256_GCM_SHA384 "TLS_AES_256_GCM_SHA384"
+#define TLS1_TXT_CHACHA20_POLY1305_SHA256 "TLS_CHACHA20_POLY1305_SHA256"
+
+
+#define TLS_CT_RSA_SIGN 1
+#define TLS_CT_DSS_SIGN 2
+#define TLS_CT_RSA_FIXED_DH 3
+#define TLS_CT_DSS_FIXED_DH 4
+#define TLS_CT_ECDSA_SIGN 64
+#define TLS_CT_RSA_FIXED_ECDH 65
+#define TLS_CT_ECDSA_FIXED_ECDH 66
+
+#define TLS_MD_MAX_CONST_SIZE 20
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TLS1_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.grpc_back
new file mode 100644
index 0000000..8b61d5a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/tls1.h.grpc_back	
@@ -0,0 +1,631 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_TLS1_H
+#define OPENSSL_HEADER_TLS1_H
+
+#include <openssl/base.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+#define TLS1_AD_END_OF_EARLY_DATA 1
+#define TLS1_AD_DECRYPTION_FAILED 21
+#define TLS1_AD_RECORD_OVERFLOW 22
+#define TLS1_AD_UNKNOWN_CA 48
+#define TLS1_AD_ACCESS_DENIED 49
+#define TLS1_AD_DECODE_ERROR 50
+#define TLS1_AD_DECRYPT_ERROR 51
+#define TLS1_AD_EXPORT_RESTRICTION 60
+#define TLS1_AD_PROTOCOL_VERSION 70
+#define TLS1_AD_INSUFFICIENT_SECURITY 71
+#define TLS1_AD_INTERNAL_ERROR 80
+#define TLS1_AD_USER_CANCELLED 90
+#define TLS1_AD_NO_RENEGOTIATION 100
+#define TLS1_AD_MISSING_EXTENSION 109
+// codes 110-114 are from RFC3546
+#define TLS1_AD_UNSUPPORTED_EXTENSION 110
+#define TLS1_AD_CERTIFICATE_UNOBTAINABLE 111
+#define TLS1_AD_UNRECOGNIZED_NAME 112
+#define TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE 113
+#define TLS1_AD_BAD_CERTIFICATE_HASH_VALUE 114
+#define TLS1_AD_UNKNOWN_PSK_IDENTITY 115
+#define TLS1_AD_CERTIFICATE_REQUIRED 116
+
+// ExtensionType values from RFC6066
+#define TLSEXT_TYPE_server_name 0
+#define TLSEXT_TYPE_status_request 5
+
+// ExtensionType values from RFC4492
+#define TLSEXT_TYPE_ec_point_formats 11
+
+// ExtensionType values from RFC5246
+#define TLSEXT_TYPE_signature_algorithms 13
+
+// ExtensionType value from RFC5764
+#define TLSEXT_TYPE_srtp 14
+
+// ExtensionType value from RFC7301
+#define TLSEXT_TYPE_application_layer_protocol_negotiation 16
+
+// ExtensionType value from RFC7685
+#define TLSEXT_TYPE_padding 21
+
+// ExtensionType value from RFC7627
+#define TLSEXT_TYPE_extended_master_secret 23
+
+// ExtensionType value from draft-ietf-tokbind-negotiation-10
+#define TLSEXT_TYPE_token_binding 24
+
+// ExtensionType value from draft-ietf-quic-tls. Note that this collides with
+// TLS-LTS and, based on scans, something else too. Since it's QUIC-only, that
+// shouldn't be a problem in practice.
+#define TLSEXT_TYPE_quic_transport_parameters 0xffa5
+
+// ExtensionType value assigned to
+// https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03
+#define TLSEXT_TYPE_cert_compression 27
+
+// ExtensionType value from RFC4507
+#define TLSEXT_TYPE_session_ticket 35
+
+// ExtensionType values from RFC8446
+#define TLSEXT_TYPE_supported_groups 10
+#define TLSEXT_TYPE_pre_shared_key 41
+#define TLSEXT_TYPE_early_data 42
+#define TLSEXT_TYPE_supported_versions 43
+#define TLSEXT_TYPE_cookie 44
+#define TLSEXT_TYPE_psk_key_exchange_modes 45
+#define TLSEXT_TYPE_certificate_authorities 47
+#define TLSEXT_TYPE_signature_algorithms_cert 50
+#define TLSEXT_TYPE_key_share 51
+
+// ExtensionType value from RFC5746
+#define TLSEXT_TYPE_renegotiate 0xff01
+
+// ExtensionType value from draft-ietf-tls-subcerts. This is not an IANA defined
+// extension number.
+#define TLSEXT_TYPE_delegated_credential 0xff02
+
+// ExtensionType value from RFC6962
+#define TLSEXT_TYPE_certificate_timestamp 18
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_next_proto_neg 13172
+
+// This is not an IANA defined extension number
+#define TLSEXT_TYPE_channel_id 30032
+
+// status request value from RFC 3546
+#define TLSEXT_STATUSTYPE_nothing (-1)
+#define TLSEXT_STATUSTYPE_ocsp 1
+
+// ECPointFormat values from RFC 4492
+#define TLSEXT_ECPOINTFORMAT_uncompressed 0
+#define TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime 1
+
+// Signature and hash algorithms from RFC 5246
+
+#define TLSEXT_signature_anonymous 0
+#define TLSEXT_signature_rsa 1
+#define TLSEXT_signature_dsa 2
+#define TLSEXT_signature_ecdsa 3
+
+#define TLSEXT_hash_none 0
+#define TLSEXT_hash_md5 1
+#define TLSEXT_hash_sha1 2
+#define TLSEXT_hash_sha224 3
+#define TLSEXT_hash_sha256 4
+#define TLSEXT_hash_sha384 5
+#define TLSEXT_hash_sha512 6
+
+// From https://tools.ietf.org/html/draft-ietf-tls-certificate-compression-03#section-3
+#define TLSEXT_cert_compression_zlib 1
+#define TLSEXT_cert_compression_brotli 2
+
+#define TLSEXT_MAXLEN_host_name 255
+
+// PSK ciphersuites from 4279
+#define TLS1_CK_PSK_WITH_RC4_128_SHA                    0x0300008A
+#define TLS1_CK_PSK_WITH_3DES_EDE_CBC_SHA               0x0300008B
+#define TLS1_CK_PSK_WITH_AES_128_CBC_SHA                0x0300008C
+#define TLS1_CK_PSK_WITH_AES_256_CBC_SHA                0x0300008D
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_CK_ECDHE_PSK_WITH_AES_128_CBC_SHA          0x0300C035
+#define TLS1_CK_ECDHE_PSK_WITH_AES_256_CBC_SHA          0x0300C036
+
+// Additional TLS ciphersuites from expired Internet Draft
+// draft-ietf-tls-56-bit-ciphersuites-01.txt
+// (available if TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES is defined, see
+// s3_lib.c).  We actually treat them like SSL 3.0 ciphers, which we probably
+// shouldn't.  Note that the first two are actually not in the IDs.
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_MD5 0x03000060      // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 0x03000061  // not in ID
+#define TLS1_CK_RSA_EXPORT1024_WITH_DES_CBC_SHA 0x03000062
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA 0x03000063
+#define TLS1_CK_RSA_EXPORT1024_WITH_RC4_56_SHA 0x03000064
+#define TLS1_CK_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA 0x03000065
+#define TLS1_CK_DHE_DSS_WITH_RC4_128_SHA 0x03000066
+
+// AES ciphersuites from RFC3268
+
+#define TLS1_CK_RSA_WITH_AES_128_SHA 0x0300002F
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA 0x03000030
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA 0x03000031
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA 0x03000032
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA 0x03000033
+#define TLS1_CK_ADH_WITH_AES_128_SHA 0x03000034
+
+#define TLS1_CK_RSA_WITH_AES_256_SHA 0x03000035
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA 0x03000036
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA 0x03000037
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA 0x03000038
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA 0x03000039
+#define TLS1_CK_ADH_WITH_AES_256_SHA 0x0300003A
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_RSA_WITH_NULL_SHA256 0x0300003B
+#define TLS1_CK_RSA_WITH_AES_128_SHA256 0x0300003C
+#define TLS1_CK_RSA_WITH_AES_256_SHA256 0x0300003D
+#define TLS1_CK_DH_DSS_WITH_AES_128_SHA256 0x0300003E
+#define TLS1_CK_DH_RSA_WITH_AES_128_SHA256 0x0300003F
+#define TLS1_CK_DHE_DSS_WITH_AES_128_SHA256 0x03000040
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000041
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000042
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000043
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA 0x03000044
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA 0x03000045
+#define TLS1_CK_ADH_WITH_CAMELLIA_128_CBC_SHA 0x03000046
+
+// TLS v1.2 ciphersuites
+#define TLS1_CK_DHE_RSA_WITH_AES_128_SHA256 0x03000067
+#define TLS1_CK_DH_DSS_WITH_AES_256_SHA256 0x03000068
+#define TLS1_CK_DH_RSA_WITH_AES_256_SHA256 0x03000069
+#define TLS1_CK_DHE_DSS_WITH_AES_256_SHA256 0x0300006A
+#define TLS1_CK_DHE_RSA_WITH_AES_256_SHA256 0x0300006B
+#define TLS1_CK_ADH_WITH_AES_128_SHA256 0x0300006C
+#define TLS1_CK_ADH_WITH_AES_256_SHA256 0x0300006D
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_CK_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000084
+#define TLS1_CK_DH_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000085
+#define TLS1_CK_DH_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000086
+#define TLS1_CK_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA 0x03000087
+#define TLS1_CK_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA 0x03000088
+#define TLS1_CK_ADH_WITH_CAMELLIA_256_CBC_SHA 0x03000089
+
+// SEED ciphersuites from RFC4162
+#define TLS1_CK_RSA_WITH_SEED_SHA 0x03000096
+#define TLS1_CK_DH_DSS_WITH_SEED_SHA 0x03000097
+#define TLS1_CK_DH_RSA_WITH_SEED_SHA 0x03000098
+#define TLS1_CK_DHE_DSS_WITH_SEED_SHA 0x03000099
+#define TLS1_CK_DHE_RSA_WITH_SEED_SHA 0x0300009A
+#define TLS1_CK_ADH_WITH_SEED_SHA 0x0300009B
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_CK_RSA_WITH_AES_128_GCM_SHA256 0x0300009C
+#define TLS1_CK_RSA_WITH_AES_256_GCM_SHA384 0x0300009D
+#define TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256 0x0300009E
+#define TLS1_CK_DHE_RSA_WITH_AES_256_GCM_SHA384 0x0300009F
+#define TLS1_CK_DH_RSA_WITH_AES_128_GCM_SHA256 0x030000A0
+#define TLS1_CK_DH_RSA_WITH_AES_256_GCM_SHA384 0x030000A1
+#define TLS1_CK_DHE_DSS_WITH_AES_128_GCM_SHA256 0x030000A2
+#define TLS1_CK_DHE_DSS_WITH_AES_256_GCM_SHA384 0x030000A3
+#define TLS1_CK_DH_DSS_WITH_AES_128_GCM_SHA256 0x030000A4
+#define TLS1_CK_DH_DSS_WITH_AES_256_GCM_SHA384 0x030000A5
+#define TLS1_CK_ADH_WITH_AES_128_GCM_SHA256 0x030000A6
+#define TLS1_CK_ADH_WITH_AES_256_GCM_SHA384 0x030000A7
+
+// ECC ciphersuites from RFC4492
+#define TLS1_CK_ECDH_ECDSA_WITH_NULL_SHA 0x0300C001
+#define TLS1_CK_ECDH_ECDSA_WITH_RC4_128_SHA 0x0300C002
+#define TLS1_CK_ECDH_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C003
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_CBC_SHA 0x0300C004
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_CBC_SHA 0x0300C005
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_NULL_SHA 0x0300C006
+#define TLS1_CK_ECDHE_ECDSA_WITH_RC4_128_SHA 0x0300C007
+#define TLS1_CK_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA 0x0300C008
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA 0x0300C009
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA 0x0300C00A
+
+#define TLS1_CK_ECDH_RSA_WITH_NULL_SHA 0x0300C00B
+#define TLS1_CK_ECDH_RSA_WITH_RC4_128_SHA 0x0300C00C
+#define TLS1_CK_ECDH_RSA_WITH_DES_192_CBC3_SHA 0x0300C00D
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_CBC_SHA 0x0300C00E
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_CBC_SHA 0x0300C00F
+
+#define TLS1_CK_ECDHE_RSA_WITH_NULL_SHA 0x0300C010
+#define TLS1_CK_ECDHE_RSA_WITH_RC4_128_SHA 0x0300C011
+#define TLS1_CK_ECDHE_RSA_WITH_DES_192_CBC3_SHA 0x0300C012
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA 0x0300C013
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA 0x0300C014
+
+#define TLS1_CK_ECDH_anon_WITH_NULL_SHA 0x0300C015
+#define TLS1_CK_ECDH_anon_WITH_RC4_128_SHA 0x0300C016
+#define TLS1_CK_ECDH_anon_WITH_DES_192_CBC3_SHA 0x0300C017
+#define TLS1_CK_ECDH_anon_WITH_AES_128_CBC_SHA 0x0300C018
+#define TLS1_CK_ECDH_anon_WITH_AES_256_CBC_SHA 0x0300C019
+
+// SRP ciphersuites from RFC 5054
+#define TLS1_CK_SRP_SHA_WITH_3DES_EDE_CBC_SHA 0x0300C01A
+#define TLS1_CK_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA 0x0300C01B
+#define TLS1_CK_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA 0x0300C01C
+#define TLS1_CK_SRP_SHA_WITH_AES_128_CBC_SHA 0x0300C01D
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_128_CBC_SHA 0x0300C01E
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_128_CBC_SHA 0x0300C01F
+#define TLS1_CK_SRP_SHA_WITH_AES_256_CBC_SHA 0x0300C020
+#define TLS1_CK_SRP_SHA_RSA_WITH_AES_256_CBC_SHA 0x0300C021
+#define TLS1_CK_SRP_SHA_DSS_WITH_AES_256_CBC_SHA 0x0300C022
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_SHA256 0x0300C023
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_SHA384 0x0300C024
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_SHA256 0x0300C025
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_SHA384 0x0300C026
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_SHA256 0x0300C027
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_SHA384 0x0300C028
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_SHA256 0x0300C029
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_SHA384 0x0300C02A
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02B
+#define TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02C
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 0x0300C02D
+#define TLS1_CK_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 0x0300C02E
+#define TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256 0x0300C02F
+#define TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384 0x0300C030
+#define TLS1_CK_ECDH_RSA_WITH_AES_128_GCM_SHA256 0x0300C031
+#define TLS1_CK_ECDH_RSA_WITH_AES_256_GCM_SHA384 0x0300C032
+
+// ChaCha20-Poly1305 cipher suites from RFC 7905.
+#define TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA8
+#define TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 0x0300CCA9
+#define TLS1_CK_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 0x0300CCAC
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_CK_AES_128_GCM_SHA256 0x03001301
+#define TLS1_CK_AES_256_GCM_SHA384 0x03001302
+#define TLS1_CK_CHACHA20_POLY1305_SHA256 0x03001303
+
+// XXX
+// Inconsistency alert:
+// The OpenSSL names of ciphers with ephemeral DH here include the string
+// "DHE", while elsewhere it has always been "EDH".
+// (The alias for the list of all such ciphers also is "EDH".)
+// The specifications speak of "EDH"; maybe we should allow both forms
+// for everything.
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_MD5 "EXP1024-RC4-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC2_CBC_56_MD5 "EXP1024-RC2-CBC-MD5"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_DES_CBC_SHA "EXP1024-DES-CBC-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_DES_CBC_SHA \
+  "EXP1024-DHE-DSS-DES-CBC-SHA"
+#define TLS1_TXT_RSA_EXPORT1024_WITH_RC4_56_SHA "EXP1024-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_EXPORT1024_WITH_RC4_56_SHA "EXP1024-DHE-DSS-RC4-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_RC4_128_SHA "DHE-DSS-RC4-SHA"
+
+// AES ciphersuites from RFC3268
+#define TLS1_TXT_RSA_WITH_AES_128_SHA "AES128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA "DH-DSS-AES128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA "DH-RSA-AES128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA "DHE-DSS-AES128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA "DHE-RSA-AES128-SHA"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA "ADH-AES128-SHA"
+
+#define TLS1_TXT_RSA_WITH_AES_256_SHA "AES256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA "DH-DSS-AES256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA "DH-RSA-AES256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA "DHE-DSS-AES256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA "DHE-RSA-AES256-SHA"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA "ADH-AES256-SHA"
+
+// ECC ciphersuites from RFC4492
+#define TLS1_TXT_ECDH_ECDSA_WITH_NULL_SHA "ECDH-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_RC4_128_SHA "ECDH-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_DES_192_CBC3_SHA "ECDH-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_CBC_SHA "ECDH-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_CBC_SHA "ECDH-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_NULL_SHA "ECDHE-ECDSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_RC4_128_SHA "ECDHE-ECDSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_DES_192_CBC3_SHA "ECDHE-ECDSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA "ECDHE-ECDSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA "ECDHE-ECDSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_RSA_WITH_NULL_SHA "ECDH-RSA-NULL-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_RC4_128_SHA "ECDH-RSA-RC4-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_DES_192_CBC3_SHA "ECDH-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_CBC_SHA "ECDH-RSA-AES128-SHA"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_CBC_SHA "ECDH-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_NULL_SHA "ECDHE-RSA-NULL-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_RC4_128_SHA "ECDHE-RSA-RC4-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_DES_192_CBC3_SHA "ECDHE-RSA-DES-CBC3-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA "ECDHE-RSA-AES128-SHA"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA "ECDHE-RSA-AES256-SHA"
+
+#define TLS1_TXT_ECDH_anon_WITH_NULL_SHA "AECDH-NULL-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_RC4_128_SHA "AECDH-RC4-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_DES_192_CBC3_SHA "AECDH-DES-CBC3-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_128_CBC_SHA "AECDH-AES128-SHA"
+#define TLS1_TXT_ECDH_anon_WITH_AES_256_CBC_SHA "AECDH-AES256-SHA"
+
+// PSK ciphersuites from RFC 4279
+#define TLS1_TXT_PSK_WITH_RC4_128_SHA "PSK-RC4-SHA"
+#define TLS1_TXT_PSK_WITH_3DES_EDE_CBC_SHA "PSK-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_128_CBC_SHA "PSK-AES128-CBC-SHA"
+#define TLS1_TXT_PSK_WITH_AES_256_CBC_SHA "PSK-AES256-CBC-SHA"
+
+// PSK ciphersuites from RFC 5489
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_128_CBC_SHA "ECDHE-PSK-AES128-CBC-SHA"
+#define TLS1_TXT_ECDHE_PSK_WITH_AES_256_CBC_SHA "ECDHE-PSK-AES256-CBC-SHA"
+
+// SRP ciphersuite from RFC 5054
+#define TLS1_TXT_SRP_SHA_WITH_3DES_EDE_CBC_SHA "SRP-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA "SRP-RSA-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA "SRP-DSS-3DES-EDE-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_128_CBC_SHA "SRP-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_128_CBC_SHA "SRP-RSA-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_128_CBC_SHA "SRP-DSS-AES-128-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_WITH_AES_256_CBC_SHA "SRP-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_RSA_WITH_AES_256_CBC_SHA "SRP-RSA-AES-256-CBC-SHA"
+#define TLS1_TXT_SRP_SHA_DSS_WITH_AES_256_CBC_SHA "SRP-DSS-AES-256-CBC-SHA"
+
+// Camellia ciphersuites from RFC4132
+#define TLS1_TXT_RSA_WITH_CAMELLIA_128_CBC_SHA "CAMELLIA128-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_128_CBC_SHA "DH-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_128_CBC_SHA "DH-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA "DHE-DSS-CAMELLIA128-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA "DHE-RSA-CAMELLIA128-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_128_CBC_SHA "ADH-CAMELLIA128-SHA"
+
+#define TLS1_TXT_RSA_WITH_CAMELLIA_256_CBC_SHA "CAMELLIA256-SHA"
+#define TLS1_TXT_DH_DSS_WITH_CAMELLIA_256_CBC_SHA "DH-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DH_RSA_WITH_CAMELLIA_256_CBC_SHA "DH-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA "DHE-DSS-CAMELLIA256-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA "DHE-RSA-CAMELLIA256-SHA"
+#define TLS1_TXT_ADH_WITH_CAMELLIA_256_CBC_SHA "ADH-CAMELLIA256-SHA"
+
+// SEED ciphersuites from RFC4162
+#define TLS1_TXT_RSA_WITH_SEED_SHA "SEED-SHA"
+#define TLS1_TXT_DH_DSS_WITH_SEED_SHA "DH-DSS-SEED-SHA"
+#define TLS1_TXT_DH_RSA_WITH_SEED_SHA "DH-RSA-SEED-SHA"
+#define TLS1_TXT_DHE_DSS_WITH_SEED_SHA "DHE-DSS-SEED-SHA"
+#define TLS1_TXT_DHE_RSA_WITH_SEED_SHA "DHE-RSA-SEED-SHA"
+#define TLS1_TXT_ADH_WITH_SEED_SHA "ADH-SEED-SHA"
+
+// TLS v1.2 ciphersuites
+#define TLS1_TXT_RSA_WITH_NULL_SHA256 "NULL-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_128_SHA256 "AES128-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_SHA256 "AES256-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_SHA256 "DH-DSS-AES128-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_SHA256 "DH-RSA-AES128-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_SHA256 "DHE-DSS-AES128-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_SHA256 "DHE-RSA-AES128-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_SHA256 "DH-DSS-AES256-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_SHA256 "DH-RSA-AES256-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_SHA256 "DHE-DSS-AES256-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_SHA256 "DHE-RSA-AES256-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_128_SHA256 "ADH-AES128-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_SHA256 "ADH-AES256-SHA256"
+
+// TLS v1.2 GCM ciphersuites from RFC5288
+#define TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256 "AES128-GCM-SHA256"
+#define TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384 "AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_RSA_WITH_AES_128_GCM_SHA256 "DHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_RSA_WITH_AES_256_GCM_SHA384 "DHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_RSA_WITH_AES_128_GCM_SHA256 "DH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_RSA_WITH_AES_256_GCM_SHA384 "DH-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_DHE_DSS_WITH_AES_128_GCM_SHA256 "DHE-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DHE_DSS_WITH_AES_256_GCM_SHA384 "DHE-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_DH_DSS_WITH_AES_128_GCM_SHA256 "DH-DSS-AES128-GCM-SHA256"
+#define TLS1_TXT_DH_DSS_WITH_AES_256_GCM_SHA384 "DH-DSS-AES256-GCM-SHA384"
+#define TLS1_TXT_ADH_WITH_AES_128_GCM_SHA256 "ADH-AES128-GCM-SHA256"
+#define TLS1_TXT_ADH_WITH_AES_256_GCM_SHA384 "ADH-AES256-GCM-SHA384"
+
+// ECDH HMAC based ciphersuites from RFC5289
+
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_SHA256 "ECDHE-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_SHA384 "ECDHE-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_SHA256 "ECDH-ECDSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_SHA384 "ECDH-ECDSA-AES256-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_SHA256 "ECDHE-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_SHA384 "ECDHE-RSA-AES256-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_SHA256 "ECDH-RSA-AES128-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_SHA384 "ECDH-RSA-AES256-SHA384"
+
+// ECDH GCM based ciphersuites from RFC5289
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDHE-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDHE-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 \
+  "ECDH-ECDSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 \
+  "ECDH-ECDSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256 "ECDHE-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384 "ECDHE-RSA-AES256-GCM-SHA384"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_128_GCM_SHA256 "ECDH-RSA-AES128-GCM-SHA256"
+#define TLS1_TXT_ECDH_RSA_WITH_AES_256_GCM_SHA384 "ECDH-RSA-AES256-GCM-SHA384"
+
+#define TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-RSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-ECDSA-CHACHA20-POLY1305"
+#define TLS1_TXT_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 \
+  "ECDHE-PSK-CHACHA20-POLY1305"
+
+// TLS 1.3 ciphersuites from RFC 8446.
+#define TLS1_TXT_AES_128_GCM_SHA256 "TLS_AES_128_GCM_SHA256"
+#define TLS1_TXT_AES_256_GCM_SHA384 "TLS_AES_256_GCM_SHA384"
+#define TLS1_TXT_CHACHA20_POLY1305_SHA256 "TLS_CHACHA20_POLY1305_SHA256"
+
+
+#define TLS_CT_RSA_SIGN 1
+#define TLS_CT_DSS_SIGN 2
+#define TLS_CT_RSA_FIXED_DH 3
+#define TLS_CT_DSS_FIXED_DH 4
+#define TLS_CT_ECDSA_SIGN 64
+#define TLS_CT_RSA_FIXED_ECDH 65
+#define TLS_CT_ECDSA_FIXED_ECDH 66
+
+#define TLS_MD_MAX_CONST_SIZE 20
+
+
+#ifdef  __cplusplus
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TLS1_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h
new file mode 100644
index 0000000..fdbadea
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h	
@@ -0,0 +1,90 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_TYPE_CHECK_H
+#define OPENSSL_HEADER_TYPE_CHECK_H
+
+#include <openssl_grpc/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__cplusplus) || (defined(_MSC_VER) && !defined(__clang__))
+// In C++ and non-clang MSVC, |static_assert| is a keyword.
+#define OPENSSL_STATIC_ASSERT(cond, msg) static_assert(cond, msg)
+#else
+// C11 defines the |_Static_assert| keyword and the |static_assert| macro in
+// assert.h. While the former is available at all versions in Clang and GCC, the
+// later depends on libc and, in glibc, depends on being built in C11 mode. We
+// do not require this, for now, so use |_Static_assert| directly.
+#define OPENSSL_STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
+#endif
+
+// CHECKED_CAST casts |p| from type |from| to type |to|.
+//
+// TODO(davidben): Although this macro is not public API and is unused in
+// BoringSSL, wpa_supplicant uses it to define its own stacks. Remove this once
+// wpa_supplicant has been fixed.
+#define CHECKED_CAST(to, from, p) ((to) (1 ? (p) : (from)0))
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TYPE_CHECK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.back
new file mode 100644
index 0000000..c267938
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.back	
@@ -0,0 +1,90 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_TYPE_CHECK_H
+#define OPENSSL_HEADER_TYPE_CHECK_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__cplusplus) || (defined(_MSC_VER) && !defined(__clang__))
+// In C++ and non-clang MSVC, |static_assert| is a keyword.
+#define OPENSSL_STATIC_ASSERT(cond, msg) static_assert(cond, msg)
+#else
+// C11 defines the |_Static_assert| keyword and the |static_assert| macro in
+// assert.h. While the former is available at all versions in Clang and GCC, the
+// later depends on libc and, in glibc, depends on being built in C11 mode. We
+// do not require this, for now, so use |_Static_assert| directly.
+#define OPENSSL_STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
+#endif
+
+// CHECKED_CAST casts |p| from type |from| to type |to|.
+//
+// TODO(davidben): Although this macro is not public API and is unused in
+// BoringSSL, wpa_supplicant uses it to define its own stacks. Remove this once
+// wpa_supplicant has been fixed.
+#define CHECKED_CAST(to, from, p) ((to) (1 ? (p) : (from)0))
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TYPE_CHECK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.grpc_back
new file mode 100644
index 0000000..c267938
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/type_check.h.grpc_back	
@@ -0,0 +1,90 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_TYPE_CHECK_H
+#define OPENSSL_HEADER_TYPE_CHECK_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+#if defined(__cplusplus) || (defined(_MSC_VER) && !defined(__clang__))
+// In C++ and non-clang MSVC, |static_assert| is a keyword.
+#define OPENSSL_STATIC_ASSERT(cond, msg) static_assert(cond, msg)
+#else
+// C11 defines the |_Static_assert| keyword and the |static_assert| macro in
+// assert.h. While the former is available at all versions in Clang and GCC, the
+// later depends on libc and, in glibc, depends on being built in C11 mode. We
+// do not require this, for now, so use |_Static_assert| directly.
+#define OPENSSL_STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
+#endif
+
+// CHECKED_CAST casts |p| from type |from| to type |to|.
+//
+// TODO(davidben): Although this macro is not public API and is unused in
+// BoringSSL, wpa_supplicant uses it to define its own stacks. Remove this once
+// wpa_supplicant has been fixed.
+#define CHECKED_CAST(to, from, p) ((to) (1 ? (p) : (from)0))
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_TYPE_CHECK_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h
new file mode 100644
index 0000000..b61d902
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h	
@@ -0,0 +1,38 @@
+  #include "ssl.h"
+  #include "crypto.h"
+  #include "aes.h"
+  /* The following macros are defined by base.h. The latter is the first file included by the    
+     other headers. */    
+  #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)    
+  #  include "arm_arch.h"   
+  #endif
+  #include "asn1.h"
+  #include "asn1_mac.h"
+  #include "asn1t.h"
+  #include "blowfish.h"
+  #include "cast.h"
+  #include "chacha.h"
+  #include "cmac.h"
+  #include "conf.h"
+  #include "cpu.h"
+  #include "curve25519.h"
+  #include "des.h"
+  #include "dtls1.h"
+  #include "hkdf.h"
+  #include "md4.h"
+  #include "md5.h"
+  #include "obj_mac.h"
+  #include "objects.h"
+  #include "opensslv.h"
+  #include "ossl_typ.h"
+  #include "pkcs12.h"
+  #include "pkcs7.h"
+  #include "pkcs8.h"
+  #include "poly1305.h"
+  #include "rand.h"
+  #include "rc4.h"
+  #include "ripemd.h"
+  #include "safestack.h"
+  #include "srtp.h"
+  #include "x509.h"
+  #include "x509v3.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.back
new file mode 100644
index 0000000..b61d902
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.back	
@@ -0,0 +1,38 @@
+  #include "ssl.h"
+  #include "crypto.h"
+  #include "aes.h"
+  /* The following macros are defined by base.h. The latter is the first file included by the    
+     other headers. */    
+  #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)    
+  #  include "arm_arch.h"   
+  #endif
+  #include "asn1.h"
+  #include "asn1_mac.h"
+  #include "asn1t.h"
+  #include "blowfish.h"
+  #include "cast.h"
+  #include "chacha.h"
+  #include "cmac.h"
+  #include "conf.h"
+  #include "cpu.h"
+  #include "curve25519.h"
+  #include "des.h"
+  #include "dtls1.h"
+  #include "hkdf.h"
+  #include "md4.h"
+  #include "md5.h"
+  #include "obj_mac.h"
+  #include "objects.h"
+  #include "opensslv.h"
+  #include "ossl_typ.h"
+  #include "pkcs12.h"
+  #include "pkcs7.h"
+  #include "pkcs8.h"
+  #include "poly1305.h"
+  #include "rand.h"
+  #include "rc4.h"
+  #include "ripemd.h"
+  #include "safestack.h"
+  #include "srtp.h"
+  #include "x509.h"
+  #include "x509v3.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.grpc_back
new file mode 100644
index 0000000..b61d902
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/umbrella.h.grpc_back	
@@ -0,0 +1,38 @@
+  #include "ssl.h"
+  #include "crypto.h"
+  #include "aes.h"
+  /* The following macros are defined by base.h. The latter is the first file included by the    
+     other headers. */    
+  #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)    
+  #  include "arm_arch.h"   
+  #endif
+  #include "asn1.h"
+  #include "asn1_mac.h"
+  #include "asn1t.h"
+  #include "blowfish.h"
+  #include "cast.h"
+  #include "chacha.h"
+  #include "cmac.h"
+  #include "conf.h"
+  #include "cpu.h"
+  #include "curve25519.h"
+  #include "des.h"
+  #include "dtls1.h"
+  #include "hkdf.h"
+  #include "md4.h"
+  #include "md5.h"
+  #include "obj_mac.h"
+  #include "objects.h"
+  #include "opensslv.h"
+  #include "ossl_typ.h"
+  #include "pkcs12.h"
+  #include "pkcs7.h"
+  #include "pkcs8.h"
+  #include "poly1305.h"
+  #include "rand.h"
+  #include "rc4.h"
+  #include "ripemd.h"
+  #include "safestack.h"
+  #include "srtp.h"
+  #include "x509.h"
+  #include "x509v3.h"
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h
new file mode 100644
index 0000000..fb22f83
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h	
@@ -0,0 +1,1205 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECDH support in OpenSSL originally developed by 
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef HEADER_X509_H
+#define HEADER_X509_H
+
+#include <openssl_grpc/base.h>
+
+#include <time.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/dh.h>
+#include <openssl_grpc/dsa.h>
+#include <openssl_grpc/ecdh.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/obj.h>
+#include <openssl_grpc/pkcs7.h>
+#include <openssl_grpc/pool.h>
+#include <openssl_grpc/rsa.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+#define X509_FILETYPE_PEM	1
+#define X509_FILETYPE_ASN1	2
+#define X509_FILETYPE_DEFAULT	3
+
+#define X509v3_KU_DIGITAL_SIGNATURE	0x0080
+#define X509v3_KU_NON_REPUDIATION	0x0040
+#define X509v3_KU_KEY_ENCIPHERMENT	0x0020
+#define X509v3_KU_DATA_ENCIPHERMENT	0x0010
+#define X509v3_KU_KEY_AGREEMENT		0x0008
+#define X509v3_KU_KEY_CERT_SIGN		0x0004
+#define X509v3_KU_CRL_SIGN		0x0002
+#define X509v3_KU_ENCIPHER_ONLY		0x0001
+#define X509v3_KU_DECIPHER_ONLY		0x8000
+#define X509v3_KU_UNDEF			0xffff
+
+DEFINE_STACK_OF(X509_ALGOR)
+DECLARE_ASN1_SET_OF(X509_ALGOR)
+
+typedef STACK_OF(X509_ALGOR) X509_ALGORS;
+
+struct X509_val_st
+	{
+	ASN1_TIME *notBefore;
+	ASN1_TIME *notAfter;
+	} /* X509_VAL */;
+
+struct X509_pubkey_st
+	{
+	X509_ALGOR *algor;
+	ASN1_BIT_STRING *public_key;
+	EVP_PKEY *pkey;
+	};
+
+struct X509_sig_st
+	{
+	X509_ALGOR *algor;
+	ASN1_OCTET_STRING *digest;
+	} /* X509_SIG */;
+
+struct X509_name_entry_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_STRING *value;
+	int set;
+	int size; 	/* temp variable */
+	} /* X509_NAME_ENTRY */;
+
+DEFINE_STACK_OF(X509_NAME_ENTRY)
+DECLARE_ASN1_SET_OF(X509_NAME_ENTRY)
+
+/* we always keep X509_NAMEs in 2 forms. */
+struct X509_name_st
+	{
+	STACK_OF(X509_NAME_ENTRY) *entries;
+	int modified;	/* true if 'bytes' needs to be built */
+	BUF_MEM *bytes;
+/*	unsigned long hash; Keep the hash around for lookups */
+	unsigned char *canon_enc;
+	int canon_enclen;
+	} /* X509_NAME */;
+
+DEFINE_STACK_OF(X509_NAME)
+
+struct X509_extension_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_BOOLEAN critical;
+	ASN1_OCTET_STRING *value;
+	} /* X509_EXTENSION */;
+
+typedef STACK_OF(X509_EXTENSION) X509_EXTENSIONS;
+
+DEFINE_STACK_OF(X509_EXTENSION)
+DECLARE_ASN1_SET_OF(X509_EXTENSION)
+
+/* a sequence of these are used */
+struct x509_attributes_st
+	{
+	ASN1_OBJECT *object;
+	int single; /* 0 for a set, 1 for a single item (which is wrong) */
+	union	{
+		char		*ptr;
+/* 0 */		STACK_OF(ASN1_TYPE) *set;
+/* 1 */		ASN1_TYPE	*single;
+		} value;
+	} /* X509_ATTRIBUTE */;
+
+DEFINE_STACK_OF(X509_ATTRIBUTE)
+DECLARE_ASN1_SET_OF(X509_ATTRIBUTE)
+
+
+struct X509_req_info_st
+	{
+	ASN1_ENCODING enc;
+	ASN1_INTEGER *version;
+	X509_NAME *subject;
+	X509_PUBKEY *pubkey;
+	/*  d=2 hl=2 l=  0 cons: cont: 00 */
+	STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
+	} /* X509_REQ_INFO */;
+
+struct X509_req_st
+	{
+	X509_REQ_INFO *req_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	} /* X509_REQ */;
+
+struct x509_cinf_st
+	{
+	ASN1_INTEGER *version;		/* [ 0 ] default of v1 */
+	ASN1_INTEGER *serialNumber;
+	X509_ALGOR *signature;
+	X509_NAME *issuer;
+	X509_VAL *validity;
+	X509_NAME *subject;
+	X509_PUBKEY *key;
+	ASN1_BIT_STRING *issuerUID;		/* [ 1 ] optional in v2 */
+	ASN1_BIT_STRING *subjectUID;		/* [ 2 ] optional in v2 */
+	STACK_OF(X509_EXTENSION) *extensions;	/* [ 3 ] optional in v3 */
+	ASN1_ENCODING enc;
+	} /* X509_CINF */;
+
+/* This stuff is certificate "auxiliary info"
+ * it contains details which are useful in certificate
+ * stores and databases. When used this is tagged onto
+ * the end of the certificate itself
+ */
+
+struct x509_cert_aux_st
+	{
+	STACK_OF(ASN1_OBJECT) *trust;		/* trusted uses */
+	STACK_OF(ASN1_OBJECT) *reject;		/* rejected uses */
+	ASN1_UTF8STRING *alias;			/* "friendly name" */
+	ASN1_OCTET_STRING *keyid;		/* key id of private key */
+	STACK_OF(X509_ALGOR) *other;		/* other unspecified info */
+	} /* X509_CERT_AUX */;
+
+DECLARE_STACK_OF(DIST_POINT)
+DECLARE_STACK_OF(GENERAL_NAME)
+
+struct x509_st
+	{
+	X509_CINF *cert_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	char *name;
+	CRYPTO_EX_DATA ex_data;
+	/* These contain copies of various extension values */
+	long ex_pathlen;
+	long ex_pcpathlen;
+	unsigned long ex_flags;
+	unsigned long ex_kusage;
+	unsigned long ex_xkusage;
+	unsigned long ex_nscert;
+	ASN1_OCTET_STRING *skid;
+	AUTHORITY_KEYID *akid;
+	X509_POLICY_CACHE *policy_cache;
+	STACK_OF(DIST_POINT) *crldp;
+	STACK_OF(GENERAL_NAME) *altname;
+	NAME_CONSTRAINTS *nc;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	X509_CERT_AUX *aux;
+	CRYPTO_BUFFER *buf;
+	CRYPTO_MUTEX lock;
+	} /* X509 */;
+
+DEFINE_STACK_OF(X509)
+DECLARE_ASN1_SET_OF(X509)
+
+/* This is used for a table of trust checking functions */
+
+struct x509_trust_st {
+	int trust;
+	int flags;
+	int (*check_trust)(struct x509_trust_st *, X509 *, int);
+	char *name;
+	int arg1;
+	void *arg2;
+} /* X509_TRUST */;
+
+DEFINE_STACK_OF(X509_TRUST)
+
+/* standard trust ids */
+
+#define X509_TRUST_DEFAULT	(-1)	/* Only valid in purpose settings */
+
+#define X509_TRUST_COMPAT	1
+#define X509_TRUST_SSL_CLIENT	2
+#define X509_TRUST_SSL_SERVER	3
+#define X509_TRUST_EMAIL	4
+#define X509_TRUST_OBJECT_SIGN	5
+#define X509_TRUST_OCSP_SIGN	6
+#define X509_TRUST_OCSP_REQUEST	7
+#define X509_TRUST_TSA		8
+
+/* Keep these up to date! */
+#define X509_TRUST_MIN		1
+#define X509_TRUST_MAX		8
+
+
+/* trust_flags values */
+#define	X509_TRUST_DYNAMIC 	1
+#define	X509_TRUST_DYNAMIC_NAME	2
+
+/* check_trust return codes */
+
+#define X509_TRUST_TRUSTED	1
+#define X509_TRUST_REJECTED	2
+#define X509_TRUST_UNTRUSTED	3
+
+/* Flags for X509_print_ex() */
+
+#define	X509_FLAG_COMPAT		0
+#define	X509_FLAG_NO_HEADER		1L
+#define	X509_FLAG_NO_VERSION		(1L << 1)
+#define	X509_FLAG_NO_SERIAL		(1L << 2)
+#define	X509_FLAG_NO_SIGNAME		(1L << 3)
+#define	X509_FLAG_NO_ISSUER		(1L << 4)
+#define	X509_FLAG_NO_VALIDITY		(1L << 5)
+#define	X509_FLAG_NO_SUBJECT		(1L << 6)
+#define	X509_FLAG_NO_PUBKEY		(1L << 7)
+#define	X509_FLAG_NO_EXTENSIONS		(1L << 8)
+#define	X509_FLAG_NO_SIGDUMP		(1L << 9)
+#define	X509_FLAG_NO_AUX		(1L << 10)
+#define	X509_FLAG_NO_ATTRIBUTES		(1L << 11)
+#define	X509_FLAG_NO_IDS		(1L << 12)
+
+/* Flags specific to X509_NAME_print_ex() */	
+
+/* The field separator information */
+
+#define XN_FLAG_SEP_MASK	(0xf << 16)
+
+#define XN_FLAG_COMPAT		0		/* Traditional SSLeay: use old X509_NAME_print */
+#define XN_FLAG_SEP_COMMA_PLUS	(1 << 16)	/* RFC2253 ,+ */
+#define XN_FLAG_SEP_CPLUS_SPC	(2 << 16)	/* ,+ spaced: more readable */
+#define XN_FLAG_SEP_SPLUS_SPC	(3 << 16)	/* ;+ spaced */
+#define XN_FLAG_SEP_MULTILINE	(4 << 16)	/* One line per field */
+
+#define XN_FLAG_DN_REV		(1 << 20)	/* Reverse DN order */
+
+/* How the field name is shown */
+
+#define XN_FLAG_FN_MASK		(0x3 << 21)
+
+#define XN_FLAG_FN_SN		0		/* Object short name */
+#define XN_FLAG_FN_LN		(1 << 21)	/* Object long name */
+#define XN_FLAG_FN_OID		(2 << 21)	/* Always use OIDs */
+#define XN_FLAG_FN_NONE		(3 << 21)	/* No field names */
+
+#define XN_FLAG_SPC_EQ		(1 << 23)	/* Put spaces round '=' */
+
+/* This determines if we dump fields we don't recognise:
+ * RFC2253 requires this.
+ */
+
+#define XN_FLAG_DUMP_UNKNOWN_FIELDS (1 << 24)
+
+#define XN_FLAG_FN_ALIGN	(1 << 25)	/* Align field names to 20 characters */
+
+/* Complete set of RFC2253 flags */
+
+#define XN_FLAG_RFC2253 (ASN1_STRFLGS_RFC2253 | \
+			XN_FLAG_SEP_COMMA_PLUS | \
+			XN_FLAG_DN_REV | \
+			XN_FLAG_FN_SN | \
+			XN_FLAG_DUMP_UNKNOWN_FIELDS)
+
+/* readable oneline form */
+
+#define XN_FLAG_ONELINE (ASN1_STRFLGS_RFC2253 | \
+			ASN1_STRFLGS_ESC_QUOTE | \
+			XN_FLAG_SEP_CPLUS_SPC | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_SN)
+
+/* readable multiline form */
+
+#define XN_FLAG_MULTILINE (ASN1_STRFLGS_ESC_CTRL | \
+			ASN1_STRFLGS_ESC_MSB | \
+			XN_FLAG_SEP_MULTILINE | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_LN | \
+			XN_FLAG_FN_ALIGN)
+
+struct x509_revoked_st
+	{
+	ASN1_INTEGER *serialNumber;
+	ASN1_TIME *revocationDate;
+	STACK_OF(X509_EXTENSION) /* optional */ *extensions;
+	/* Set up if indirect CRL */
+	STACK_OF(GENERAL_NAME) *issuer;
+	/* Revocation reason */
+	int reason;
+	int sequence; /* load sequence */
+	};
+
+DEFINE_STACK_OF(X509_REVOKED)
+DECLARE_ASN1_SET_OF(X509_REVOKED)
+
+struct X509_crl_info_st
+	{
+	ASN1_INTEGER *version;
+	X509_ALGOR *sig_alg;
+	X509_NAME *issuer;
+	ASN1_TIME *lastUpdate;
+	ASN1_TIME *nextUpdate;
+	STACK_OF(X509_REVOKED) *revoked;
+	STACK_OF(X509_EXTENSION) /* [0] */ *extensions;
+	ASN1_ENCODING enc;
+	} /* X509_CRL_INFO */;
+
+DECLARE_STACK_OF(GENERAL_NAMES)
+
+struct X509_crl_st
+	{
+	/* actual signature */
+	X509_CRL_INFO *crl;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	int flags;
+	/* Copies of various extensions */
+	AUTHORITY_KEYID *akid;
+	ISSUING_DIST_POINT *idp;
+	/* Convenient breakdown of IDP */
+	int idp_flags;
+	int idp_reasons;
+	/* CRL and base CRL numbers for delta processing */
+	ASN1_INTEGER *crl_number;
+	ASN1_INTEGER *base_crl_number;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	STACK_OF(GENERAL_NAMES) *issuers;
+	const X509_CRL_METHOD *meth;
+	void *meth_data;
+	} /* X509_CRL */;
+
+DEFINE_STACK_OF(X509_CRL)
+DECLARE_ASN1_SET_OF(X509_CRL)
+
+struct private_key_st
+	{
+	int version;
+	/* The PKCS#8 data types */
+	X509_ALGOR *enc_algor;
+	ASN1_OCTET_STRING *enc_pkey;	/* encrypted pub key */
+
+	/* When decrypted, the following will not be NULL */
+	EVP_PKEY *dec_pkey;
+
+	/* used to encrypt and decrypt */
+	int key_length;
+	char *key_data;
+	int key_free;	/* true if we should auto free key_data */
+
+	/* expanded version of 'enc_algor' */
+	EVP_CIPHER_INFO cipher;
+	} /* X509_PKEY */;
+
+#ifndef OPENSSL_NO_EVP
+struct X509_info_st
+	{
+	X509 *x509;
+	X509_CRL *crl;
+	X509_PKEY *x_pkey;
+
+	EVP_CIPHER_INFO enc_cipher;
+	int enc_len;
+	char *enc_data;
+
+	} /* X509_INFO */;
+
+DEFINE_STACK_OF(X509_INFO)
+#endif
+
+/* The next 2 structures and their 8 routines were sent to me by
+ * Pat Richard <patr@x509.com> and are used to manipulate
+ * Netscapes spki structures - useful if you are writing a CA web page
+ */
+struct Netscape_spkac_st
+	{
+	X509_PUBKEY *pubkey;
+	ASN1_IA5STRING *challenge;	/* challenge sent in atlas >= PR2 */
+	} /* NETSCAPE_SPKAC */;
+
+struct Netscape_spki_st
+	{
+	NETSCAPE_SPKAC *spkac;	/* signed public key and challenge */
+	X509_ALGOR *sig_algor;
+	ASN1_BIT_STRING *signature;
+	} /* NETSCAPE_SPKI */;
+
+/* PKCS#8 private key info structure */
+
+struct pkcs8_priv_key_info_st
+        {
+        int broken;     /* Flag for various broken formats */
+#define PKCS8_OK		0
+#define PKCS8_NO_OCTET		1
+#define PKCS8_EMBEDDED_PARAM	2
+#define PKCS8_NS_DB		3
+#define PKCS8_NEG_PRIVKEY	4
+        ASN1_INTEGER *version;
+        X509_ALGOR *pkeyalg;
+        ASN1_TYPE *pkey; /* Should be OCTET STRING but some are broken */
+        STACK_OF(X509_ATTRIBUTE) *attributes;
+        };
+
+#ifdef  __cplusplus
+}
+#endif
+
+#include <openssl_grpc/x509_vfy.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define		X509_get_version(x) ASN1_INTEGER_get((x)->cert_info->version)
+/* #define	X509_get_serialNumber(x) ((x)->cert_info->serialNumber) */
+#define		X509_get_notBefore(x) ((x)->cert_info->validity->notBefore)
+#define		X509_get_notAfter(x) ((x)->cert_info->validity->notAfter)
+#define		X509_get_cert_info(x) ((x)->cert_info)
+#define		X509_extract_key(x)	X509_get_pubkey(x) /*****/
+#define		X509_REQ_get_version(x) ASN1_INTEGER_get((x)->req_info->version)
+#define		X509_REQ_get_subject_name(x) ((x)->req_info->subject)
+#define		X509_REQ_extract_key(a)	X509_REQ_get_pubkey(a)
+#define		X509_name_cmp(a,b)	X509_NAME_cmp((a),(b))
+#define		X509_get_signature_type(x) EVP_PKEY_type(OBJ_obj2nid((x)->sig_alg->algorithm))
+
+#define		X509_CRL_get_version(x) ASN1_INTEGER_get((x)->crl->version)
+const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl);
+const ASN1_TIME *X509_CRL_get0_nextUpdate(const X509_CRL *crl);
+#define 	X509_CRL_get_lastUpdate(x) ((x)->crl->lastUpdate)
+#define 	X509_CRL_get_nextUpdate(x) ((x)->crl->nextUpdate)
+#define		X509_CRL_get_issuer(x) ((x)->crl->issuer)
+#define		X509_CRL_get_REVOKED(x) ((x)->crl->revoked)
+
+#define		X509_CINF_set_modified(c) ((c)->enc.modified = 1)
+#define		X509_CINF_get_issuer(c) (&(c)->issuer)
+#define		X509_CINF_get_extensions(c) ((c)->extensions)
+#define		X509_CINF_get_signature(c) ((c)->signature)
+
+OPENSSL_EXPORT void X509_CRL_set_default_method(const X509_CRL_METHOD *meth);
+OPENSSL_EXPORT X509_CRL_METHOD *X509_CRL_METHOD_new(
+	int (*crl_init)(X509_CRL *crl),
+	int (*crl_free)(X509_CRL *crl),
+	int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret,
+				ASN1_INTEGER *ser, X509_NAME *issuer),
+	int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk));
+OPENSSL_EXPORT void X509_CRL_METHOD_free(X509_CRL_METHOD *m);
+
+OPENSSL_EXPORT void X509_CRL_set_meth_data(X509_CRL *crl, void *dat);
+OPENSSL_EXPORT void *X509_CRL_get_meth_data(X509_CRL *crl);
+
+/* This one is only used so that a binary form can output, as in
+ * i2d_X509_NAME(X509_get_X509_PUBKEY(x),&buf) */
+#define 	X509_get_X509_PUBKEY(x) ((x)->cert_info->key)
+
+
+OPENSSL_EXPORT const char *X509_verify_cert_error_string(long n);
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT int X509_verify(X509 *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r);
+OPENSSL_EXPORT int X509_CRL_verify(X509_CRL *a, EVP_PKEY *r);
+OPENSSL_EXPORT int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT NETSCAPE_SPKI * NETSCAPE_SPKI_b64_decode(const char *str, int len);
+OPENSSL_EXPORT char * NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki);
+
+OPENSSL_EXPORT int X509_signature_dump(BIO *bp,const ASN1_STRING *sig, int indent);
+OPENSSL_EXPORT int X509_signature_print(BIO *bp, const X509_ALGOR *alg,
+                                        const ASN1_STRING *sig);
+
+OPENSSL_EXPORT int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md);
+
+OPENSSL_EXPORT int X509_pubkey_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_CRL_digest(const X509_CRL *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_REQ_digest(const X509_REQ *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_NAME_digest(const X509_NAME *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+#endif
+
+/* X509_parse_from_buffer parses an X.509 structure from |buf| and returns a
+ * fresh X509 or NULL on error. There must not be any trailing data in |buf|.
+ * The returned structure (if any) holds a reference to |buf| rather than
+ * copying parts of it as a normal |d2i_X509| call would do. */
+OPENSSL_EXPORT X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT X509 *d2i_X509_fp(FILE *fp, X509 **x509);
+OPENSSL_EXPORT int i2d_X509_fp(FILE *fp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_fp(FILE *fp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_fp(FILE *fp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_fp(FILE *fp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_fp(FILE *fp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_fp(FILE *fp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_fp(FILE *fp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_fp(FILE *fp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_fp(FILE *fp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_fp(FILE *fp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_fp(FILE *fp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_fp(FILE *fp, EVP_PKEY **a);
+#endif
+
+OPENSSL_EXPORT X509 *d2i_X509_bio(BIO *bp,X509 **x509);
+OPENSSL_EXPORT int i2d_X509_bio(BIO *bp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_bio(BIO *bp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_bio(BIO *bp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_bio(BIO *bp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_bio(BIO *bp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_bio(BIO *bp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_bio(BIO *bp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_bio(BIO *bp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_bio(BIO *bp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_bio(BIO *bp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT DH *d2i_DHparams_bio(BIO *bp, DH **dh);
+OPENSSL_EXPORT int i2d_DHparams_bio(BIO *bp, const DH *dh);
+
+OPENSSL_EXPORT X509 *X509_dup(X509 *x509);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_dup(X509_ATTRIBUTE *xa);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_dup(X509_EXTENSION *ex);
+OPENSSL_EXPORT X509_CRL *X509_CRL_dup(X509_CRL *crl);
+OPENSSL_EXPORT X509_REVOKED *X509_REVOKED_dup(X509_REVOKED *rev);
+OPENSSL_EXPORT X509_REQ *X509_REQ_dup(X509_REQ *req);
+OPENSSL_EXPORT X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *xn);
+OPENSSL_EXPORT int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype, void *pval);
+OPENSSL_EXPORT void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
+                                    const void **ppval,
+                                    const X509_ALGOR *algor);
+OPENSSL_EXPORT void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
+OPENSSL_EXPORT int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
+
+OPENSSL_EXPORT X509_NAME *X509_NAME_dup(X509_NAME *xn);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_dup(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder,
+                                      size_t *pderlen);
+
+OPENSSL_EXPORT int		X509_cmp_time(const ASN1_TIME *s, time_t *t);
+OPENSSL_EXPORT int		X509_cmp_current_time(const ASN1_TIME *s);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj(ASN1_TIME *s, long adj, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj_ex(ASN1_TIME *s, int offset_day, long offset_sec, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_gmtime_adj(ASN1_TIME *s, long adj);
+
+OPENSSL_EXPORT const char *	X509_get_default_cert_area(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_private_dir(void );
+
+OPENSSL_EXPORT X509_REQ *	X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT X509 *		X509_REQ_to_X509(X509_REQ *r, int days,EVP_PKEY *pkey);
+
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_ALGORS, X509_ALGORS, X509_ALGORS)
+DECLARE_ASN1_FUNCTIONS(X509_VAL)
+
+DECLARE_ASN1_FUNCTIONS(X509_PUBKEY)
+
+OPENSSL_EXPORT int		X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_PUBKEY_get(X509_PUBKEY *key);
+OPENSSL_EXPORT int		i2d_PUBKEY(const EVP_PKEY *a,unsigned char **pp);
+OPENSSL_EXPORT EVP_PKEY *	d2i_PUBKEY(EVP_PKEY **a,const unsigned char **pp,
+			long length);
+OPENSSL_EXPORT int		i2d_RSA_PUBKEY(const RSA *a,unsigned char **pp);
+OPENSSL_EXPORT RSA *		d2i_RSA_PUBKEY(RSA **a,const unsigned char **pp,
+			long length);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT int		i2d_DSA_PUBKEY(const DSA *a,unsigned char **pp);
+OPENSSL_EXPORT DSA *		d2i_DSA_PUBKEY(DSA **a,const unsigned char **pp,
+			long length);
+#endif
+OPENSSL_EXPORT int		i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp);
+OPENSSL_EXPORT EC_KEY 		*d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp,
+			long length);
+
+DECLARE_ASN1_FUNCTIONS(X509_SIG)
+DECLARE_ASN1_FUNCTIONS(X509_REQ_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_REQ)
+
+DECLARE_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value);
+
+DECLARE_ASN1_FUNCTIONS(X509_EXTENSION)
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_EXTENSIONS, X509_EXTENSIONS, X509_EXTENSIONS)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME)
+
+OPENSSL_EXPORT int		X509_NAME_set(X509_NAME **xn, X509_NAME *name);
+
+DECLARE_ASN1_FUNCTIONS(X509_CINF)
+
+DECLARE_ASN1_FUNCTIONS(X509)
+DECLARE_ASN1_FUNCTIONS(X509_CERT_AUX)
+
+/* X509_up_ref adds one to the reference count of |x| and returns one. */
+OPENSSL_EXPORT int X509_up_ref(X509 *x);
+
+OPENSSL_EXPORT int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	     CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int X509_set_ex_data(X509 *r, int idx, void *arg);
+OPENSSL_EXPORT void *X509_get_ex_data(X509 *r, int idx);
+OPENSSL_EXPORT int		i2d_X509_AUX(X509 *a,unsigned char **pp);
+OPENSSL_EXPORT X509 *		d2i_X509_AUX(X509 **a,const unsigned char **pp,long length);
+
+OPENSSL_EXPORT int i2d_re_X509_tbs(X509 *x, unsigned char **pp);
+
+OPENSSL_EXPORT void X509_get0_signature(const ASN1_BIT_STRING **psig,
+                                        const X509_ALGOR **palg, const X509 *x);
+OPENSSL_EXPORT int X509_get_signature_nid(const X509 *x);
+
+OPENSSL_EXPORT int X509_alias_set1(X509 *x, unsigned char *name, int len);
+OPENSSL_EXPORT int X509_keyid_set1(X509 *x, unsigned char *id, int len);
+OPENSSL_EXPORT unsigned char * X509_alias_get0(X509 *x, int *len);
+OPENSSL_EXPORT unsigned char * X509_keyid_get0(X509 *x, int *len);
+OPENSSL_EXPORT int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int);
+OPENSSL_EXPORT int X509_TRUST_set(int *t, int trust);
+OPENSSL_EXPORT int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT void X509_trust_clear(X509 *x);
+OPENSSL_EXPORT void X509_reject_clear(X509 *x);
+
+DECLARE_ASN1_FUNCTIONS(X509_REVOKED)
+DECLARE_ASN1_FUNCTIONS(X509_CRL_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_CRL)
+
+OPENSSL_EXPORT int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
+OPENSSL_EXPORT int X509_CRL_get0_by_serial(X509_CRL *crl,
+		X509_REVOKED **ret, ASN1_INTEGER *serial);
+OPENSSL_EXPORT int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x);
+
+OPENSSL_EXPORT X509_PKEY *	X509_PKEY_new(void );
+OPENSSL_EXPORT void		X509_PKEY_free(X509_PKEY *a);
+
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKI)
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKAC)
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT X509_INFO *	X509_INFO_new(void);
+OPENSSL_EXPORT void		X509_INFO_free(X509_INFO *a);
+OPENSSL_EXPORT char *		X509_NAME_oneline(X509_NAME *a,char *buf,int size);
+
+OPENSSL_EXPORT int ASN1_digest(i2d_of_void *i2d,const EVP_MD *type,char *data,
+		unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_digest(const ASN1_ITEM *it,const EVP_MD *type,void *data,
+	unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *algor1,
+	ASN1_BIT_STRING *signature,void *data,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
+	ASN1_BIT_STRING *signature,
+	void *data, EVP_PKEY *pkey, const EVP_MD *type);
+OPENSSL_EXPORT int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+		X509_ALGOR *algor1, X509_ALGOR *algor2,
+	     	ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx);
+#endif
+
+OPENSSL_EXPORT int 		X509_set_version(X509 *x,long version);
+OPENSSL_EXPORT int 		X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT ASN1_INTEGER *	X509_get_serialNumber(X509 *x);
+OPENSSL_EXPORT int 		X509_set_issuer_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_issuer_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_subject_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_subject_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_notBefore(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notBefore(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_notAfter(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notAfter(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_pubkey(X509 *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_get_pubkey(X509 *x);
+OPENSSL_EXPORT ASN1_BIT_STRING * X509_get0_pubkey_bitstr(const X509 *x);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x);
+OPENSSL_EXPORT const X509_ALGOR *X509_get0_tbs_sigalg(const X509 *x);
+
+OPENSSL_EXPORT int		X509_REQ_set_version(X509_REQ *x,long version);
+OPENSSL_EXPORT int		X509_REQ_set_subject_name(X509_REQ *req,X509_NAME *name);
+OPENSSL_EXPORT void X509_REQ_get0_signature(const X509_REQ *req,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_REQ_get_signature_nid(const X509_REQ *req);
+OPENSSL_EXPORT int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp);
+OPENSSL_EXPORT int		X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_REQ_get_pubkey(X509_REQ *req);
+OPENSSL_EXPORT int		X509_REQ_extension_nid(int nid);
+OPENSSL_EXPORT const int *	X509_REQ_get_extension_nids(void);
+OPENSSL_EXPORT void		X509_REQ_set_extension_nids(const int *nids);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+				int nid);
+OPENSSL_EXPORT int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts);
+OPENSSL_EXPORT int X509_REQ_get_attr_count(const X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc);
+OPENSSL_EXPORT int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_txt(X509_REQ *req,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+
+OPENSSL_EXPORT int X509_CRL_set_version(X509_CRL *x, long version);
+OPENSSL_EXPORT int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name);
+OPENSSL_EXPORT int X509_CRL_set_lastUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_set_nextUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_sort(X509_CRL *crl);
+OPENSSL_EXPORT int X509_CRL_up_ref(X509_CRL *crl);
+
+OPENSSL_EXPORT void X509_CRL_get0_signature(const X509_CRL *crl,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_CRL_get_signature_nid(const X509_CRL *crl);
+OPENSSL_EXPORT int i2d_re_X509_CRL_tbs(X509_CRL *req, unsigned char **pp);
+
+OPENSSL_EXPORT const ASN1_INTEGER *X509_REVOKED_get0_serialNumber(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_serialNumber(X509_REVOKED *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT const ASN1_TIME *X509_REVOKED_get0_revocationDate(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_revocationDate(X509_REVOKED *r, ASN1_TIME *tm);
+
+OPENSSL_EXPORT X509_CRL *X509_CRL_diff(X509_CRL *base, X509_CRL *newer,
+			EVP_PKEY *skey, const EVP_MD *md, unsigned int flags);
+
+OPENSSL_EXPORT int		X509_REQ_check_private_key(X509_REQ *x509,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int		X509_check_private_key(X509 *x509, const EVP_PKEY *pkey);
+OPENSSL_EXPORT int 		X509_chain_check_suiteb(int *perror_depth,
+						X509 *x, STACK_OF(X509) *chain,
+						unsigned long flags);
+OPENSSL_EXPORT int 		X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk,
+						unsigned long flags);
+OPENSSL_EXPORT STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain);
+
+OPENSSL_EXPORT int		X509_issuer_and_serial_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_and_serial_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_issuer_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_subject_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash(X509 *x);
+
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash_old(X509 *a);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash_old(X509 *x);
+
+OPENSSL_EXPORT int		X509_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT int		X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash(X509_NAME *x);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash_old(X509_NAME *x);
+
+OPENSSL_EXPORT int		X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b);
+OPENSSL_EXPORT int		X509_CRL_match(const X509_CRL *a, const X509_CRL *b);
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT int		X509_print_ex_fp(FILE *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print_fp(FILE *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CRL_print_fp(FILE *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_fp(FILE *bp,X509_REQ *req);
+OPENSSL_EXPORT int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int		X509_NAME_print(BIO *bp, X509_NAME *name, int obase);
+OPENSSL_EXPORT int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags);
+OPENSSL_EXPORT int		X509_print_ex(BIO *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_ocspid_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CERT_AUX_print(BIO *bp,X509_CERT_AUX *x, int indent);
+OPENSSL_EXPORT int		X509_CRL_print(BIO *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_REQ_print(BIO *bp,X509_REQ *req);
+
+OPENSSL_EXPORT int 		X509_NAME_entry_count(X509_NAME *name);
+OPENSSL_EXPORT int 		X509_NAME_get_text_by_NID(X509_NAME *name, int nid,
+			char *buf,int len);
+OPENSSL_EXPORT int		X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			char *buf,int len);
+
+/* NOTE: you should be passsing -1, not 0 as lastpos.  The functions that use
+ * lastpos, search after that position on. */
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_NID(X509_NAME *name,int nid,int lastpos);
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			int lastpos);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT int 		X509_NAME_add_entry(X509_NAME *name,X509_NAME_ENTRY *ne,
+			int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
+		const char *field, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
+			int type,unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
+			const unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
+			const ASN1_OBJECT *obj, int type,const unsigned char *bytes,
+			int len);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne,
+			const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT ASN1_STRING *	X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int		X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x);
+OPENSSL_EXPORT int		X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x,
+				      int nid, int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *x,
+				      const ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *x,
+					   int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
+					 X509_EXTENSION *ex, int loc);
+
+OPENSSL_EXPORT int		X509_get_ext_count(X509 *x);
+OPENSSL_EXPORT int		X509_get_ext_by_NID(X509 *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_OBJ(X509 *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_critical(X509 *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_get_ext(X509 *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_delete_ext(X509 *x, int loc);
+OPENSSL_EXPORT int		X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_CRL_get_ext_count(X509_CRL *x);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_OBJ(X509_CRL *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_critical(X509_CRL *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT int		X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_count(X509_REVOKED *x);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_OBJ(X509_REVOKED *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_critical(X509_REVOKED *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT int		X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex,
+			int nid, int crit, ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
+			const ASN1_OBJECT *obj,int crit,ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT int		X509_EXTENSION_set_object(X509_EXTENSION *ex,const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int		X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit);
+OPENSSL_EXPORT int		X509_EXTENSION_set_data(X509_EXTENSION *ex,
+			ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_EXTENSION_get_object(X509_EXTENSION *ex);
+OPENSSL_EXPORT ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ne);
+OPENSSL_EXPORT int		X509_EXTENSION_get_critical(X509_EXTENSION *ex);
+
+OPENSSL_EXPORT int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x);
+OPENSSL_EXPORT int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, const ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
+					 X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
+				ASN1_OBJECT *obj, int lastpos, int type);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
+	     int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
+	     const ASN1_OBJECT *obj, int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
+		const char *atrname, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len);
+OPENSSL_EXPORT void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
+					int atrtype, void *data);
+OPENSSL_EXPORT int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx);
+
+OPENSSL_EXPORT int		X509_verify_cert(X509_STORE_CTX *ctx);
+
+/* lookup a cert from a X509 STACK */
+OPENSSL_EXPORT X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk,X509_NAME *name,
+				     ASN1_INTEGER *serial);
+OPENSSL_EXPORT X509 *X509_find_by_subject(STACK_OF(X509) *sk,X509_NAME *name);
+
+/* PKCS#8 utilities */
+
+DECLARE_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
+
+OPENSSL_EXPORT EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken);
+
+OPENSSL_EXPORT int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
+			int version, int ptype, void *pval,
+				unsigned char *penc, int penclen);
+OPENSSL_EXPORT int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		PKCS8_PRIV_KEY_INFO *p8);
+
+OPENSSL_EXPORT int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+					int ptype, void *pval,
+					unsigned char *penc, int penclen);
+OPENSSL_EXPORT int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		X509_PUBKEY *pub);
+
+OPENSSL_EXPORT int X509_check_trust(X509 *x, int id, int flags);
+OPENSSL_EXPORT int X509_TRUST_get_count(void);
+OPENSSL_EXPORT X509_TRUST * X509_TRUST_get0(int idx);
+OPENSSL_EXPORT int X509_TRUST_get_by_id(int id);
+OPENSSL_EXPORT int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
+					char *name, int arg1, void *arg2);
+OPENSSL_EXPORT void X509_TRUST_cleanup(void);
+OPENSSL_EXPORT int X509_TRUST_get_flags(X509_TRUST *xp);
+OPENSSL_EXPORT char *X509_TRUST_get0_name(X509_TRUST *xp);
+OPENSSL_EXPORT int X509_TRUST_get_trust(X509_TRUST *xp);
+
+
+typedef struct rsa_pss_params_st {
+  X509_ALGOR *hashAlgorithm;
+  X509_ALGOR *maskGenAlgorithm;
+  ASN1_INTEGER *saltLength;
+  ASN1_INTEGER *trailerField;
+} RSA_PSS_PARAMS;
+
+DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
+
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(NETSCAPE_SPKI, NETSCAPE_SPKI_free)
+BORINGSSL_MAKE_DELETER(RSA_PSS_PARAMS, RSA_PSS_PARAMS_free)
+BORINGSSL_MAKE_DELETER(X509, X509_free)
+BORINGSSL_MAKE_UP_REF(X509, X509_up_ref)
+BORINGSSL_MAKE_DELETER(X509_ALGOR, X509_ALGOR_free)
+BORINGSSL_MAKE_DELETER(X509_CRL, X509_CRL_free)
+BORINGSSL_MAKE_UP_REF(X509_CRL, X509_CRL_up_ref)
+BORINGSSL_MAKE_DELETER(X509_CRL_METHOD, X509_CRL_METHOD_free)
+BORINGSSL_MAKE_DELETER(X509_EXTENSION, X509_EXTENSION_free)
+BORINGSSL_MAKE_DELETER(X509_INFO, X509_INFO_free)
+BORINGSSL_MAKE_DELETER(X509_LOOKUP, X509_LOOKUP_free)
+BORINGSSL_MAKE_DELETER(X509_NAME, X509_NAME_free)
+BORINGSSL_MAKE_DELETER(X509_NAME_ENTRY, X509_NAME_ENTRY_free)
+BORINGSSL_MAKE_DELETER(X509_PKEY, X509_PKEY_free)
+BORINGSSL_MAKE_DELETER(X509_POLICY_TREE, X509_policy_tree_free)
+BORINGSSL_MAKE_DELETER(X509_PUBKEY, X509_PUBKEY_free)
+BORINGSSL_MAKE_DELETER(X509_REQ, X509_REQ_free)
+BORINGSSL_MAKE_DELETER(X509_REVOKED, X509_REVOKED_free)
+BORINGSSL_MAKE_DELETER(X509_SIG, X509_SIG_free)
+BORINGSSL_MAKE_DELETER(X509_STORE, X509_STORE_free)
+BORINGSSL_MAKE_DELETER(X509_STORE_CTX, X509_STORE_CTX_free)
+BORINGSSL_MAKE_DELETER(X509_VERIFY_PARAM, X509_VERIFY_PARAM_free)
+
+using ScopedX509_STORE_CTX =
+    internal::StackAllocated<X509_STORE_CTX, void, X509_STORE_CTX_zero,
+                             X509_STORE_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif  /* !BORINGSSL_NO_CXX */
+
+#define X509_R_AKID_MISMATCH 100
+#define X509_R_BAD_PKCS7_VERSION 101
+#define X509_R_BAD_X509_FILETYPE 102
+#define X509_R_BASE64_DECODE_ERROR 103
+#define X509_R_CANT_CHECK_DH_KEY 104
+#define X509_R_CERT_ALREADY_IN_HASH_TABLE 105
+#define X509_R_CRL_ALREADY_DELTA 106
+#define X509_R_CRL_VERIFY_FAILURE 107
+#define X509_R_IDP_MISMATCH 108
+#define X509_R_INVALID_BIT_STRING_BITS_LEFT 109
+#define X509_R_INVALID_DIRECTORY 110
+#define X509_R_INVALID_FIELD_NAME 111
+#define X509_R_INVALID_PSS_PARAMETERS 112
+#define X509_R_INVALID_TRUST 113
+#define X509_R_ISSUER_MISMATCH 114
+#define X509_R_KEY_TYPE_MISMATCH 115
+#define X509_R_KEY_VALUES_MISMATCH 116
+#define X509_R_LOADING_CERT_DIR 117
+#define X509_R_LOADING_DEFAULTS 118
+#define X509_R_NEWER_CRL_NOT_NEWER 119
+#define X509_R_NOT_PKCS7_SIGNED_DATA 120
+#define X509_R_NO_CERTIFICATES_INCLUDED 121
+#define X509_R_NO_CERT_SET_FOR_US_TO_VERIFY 122
+#define X509_R_NO_CRLS_INCLUDED 123
+#define X509_R_NO_CRL_NUMBER 124
+#define X509_R_PUBLIC_KEY_DECODE_ERROR 125
+#define X509_R_PUBLIC_KEY_ENCODE_ERROR 126
+#define X509_R_SHOULD_RETRY 127
+#define X509_R_UNKNOWN_KEY_TYPE 128
+#define X509_R_UNKNOWN_NID 129
+#define X509_R_UNKNOWN_PURPOSE_ID 130
+#define X509_R_UNKNOWN_TRUST_ID 131
+#define X509_R_UNSUPPORTED_ALGORITHM 132
+#define X509_R_WRONG_LOOKUP_TYPE 133
+#define X509_R_WRONG_TYPE 134
+#define X509_R_NAME_TOO_LONG 135
+#define X509_R_INVALID_PARAMETER 136
+#define X509_R_SIGNATURE_ALGORITHM_MISMATCH 137
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.back
new file mode 100644
index 0000000..ee3eccc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.back	
@@ -0,0 +1,1205 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECDH support in OpenSSL originally developed by 
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef HEADER_X509_H
+#define HEADER_X509_H
+
+#include <openssl/base.h>
+
+#include <time.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/cipher.h>
+#include <openssl/dh.h>
+#include <openssl/dsa.h>
+#include <openssl/ecdh.h>
+#include <openssl/ecdsa.h>
+#include <openssl/ec.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/pkcs7.h>
+#include <openssl/pool.h>
+#include <openssl/rsa.h>
+#include <openssl/sha.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+#define X509_FILETYPE_PEM	1
+#define X509_FILETYPE_ASN1	2
+#define X509_FILETYPE_DEFAULT	3
+
+#define X509v3_KU_DIGITAL_SIGNATURE	0x0080
+#define X509v3_KU_NON_REPUDIATION	0x0040
+#define X509v3_KU_KEY_ENCIPHERMENT	0x0020
+#define X509v3_KU_DATA_ENCIPHERMENT	0x0010
+#define X509v3_KU_KEY_AGREEMENT		0x0008
+#define X509v3_KU_KEY_CERT_SIGN		0x0004
+#define X509v3_KU_CRL_SIGN		0x0002
+#define X509v3_KU_ENCIPHER_ONLY		0x0001
+#define X509v3_KU_DECIPHER_ONLY		0x8000
+#define X509v3_KU_UNDEF			0xffff
+
+DEFINE_STACK_OF(X509_ALGOR)
+DECLARE_ASN1_SET_OF(X509_ALGOR)
+
+typedef STACK_OF(X509_ALGOR) X509_ALGORS;
+
+struct X509_val_st
+	{
+	ASN1_TIME *notBefore;
+	ASN1_TIME *notAfter;
+	} /* X509_VAL */;
+
+struct X509_pubkey_st
+	{
+	X509_ALGOR *algor;
+	ASN1_BIT_STRING *public_key;
+	EVP_PKEY *pkey;
+	};
+
+struct X509_sig_st
+	{
+	X509_ALGOR *algor;
+	ASN1_OCTET_STRING *digest;
+	} /* X509_SIG */;
+
+struct X509_name_entry_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_STRING *value;
+	int set;
+	int size; 	/* temp variable */
+	} /* X509_NAME_ENTRY */;
+
+DEFINE_STACK_OF(X509_NAME_ENTRY)
+DECLARE_ASN1_SET_OF(X509_NAME_ENTRY)
+
+/* we always keep X509_NAMEs in 2 forms. */
+struct X509_name_st
+	{
+	STACK_OF(X509_NAME_ENTRY) *entries;
+	int modified;	/* true if 'bytes' needs to be built */
+	BUF_MEM *bytes;
+/*	unsigned long hash; Keep the hash around for lookups */
+	unsigned char *canon_enc;
+	int canon_enclen;
+	} /* X509_NAME */;
+
+DEFINE_STACK_OF(X509_NAME)
+
+struct X509_extension_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_BOOLEAN critical;
+	ASN1_OCTET_STRING *value;
+	} /* X509_EXTENSION */;
+
+typedef STACK_OF(X509_EXTENSION) X509_EXTENSIONS;
+
+DEFINE_STACK_OF(X509_EXTENSION)
+DECLARE_ASN1_SET_OF(X509_EXTENSION)
+
+/* a sequence of these are used */
+struct x509_attributes_st
+	{
+	ASN1_OBJECT *object;
+	int single; /* 0 for a set, 1 for a single item (which is wrong) */
+	union	{
+		char		*ptr;
+/* 0 */		STACK_OF(ASN1_TYPE) *set;
+/* 1 */		ASN1_TYPE	*single;
+		} value;
+	} /* X509_ATTRIBUTE */;
+
+DEFINE_STACK_OF(X509_ATTRIBUTE)
+DECLARE_ASN1_SET_OF(X509_ATTRIBUTE)
+
+
+struct X509_req_info_st
+	{
+	ASN1_ENCODING enc;
+	ASN1_INTEGER *version;
+	X509_NAME *subject;
+	X509_PUBKEY *pubkey;
+	/*  d=2 hl=2 l=  0 cons: cont: 00 */
+	STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
+	} /* X509_REQ_INFO */;
+
+struct X509_req_st
+	{
+	X509_REQ_INFO *req_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	} /* X509_REQ */;
+
+struct x509_cinf_st
+	{
+	ASN1_INTEGER *version;		/* [ 0 ] default of v1 */
+	ASN1_INTEGER *serialNumber;
+	X509_ALGOR *signature;
+	X509_NAME *issuer;
+	X509_VAL *validity;
+	X509_NAME *subject;
+	X509_PUBKEY *key;
+	ASN1_BIT_STRING *issuerUID;		/* [ 1 ] optional in v2 */
+	ASN1_BIT_STRING *subjectUID;		/* [ 2 ] optional in v2 */
+	STACK_OF(X509_EXTENSION) *extensions;	/* [ 3 ] optional in v3 */
+	ASN1_ENCODING enc;
+	} /* X509_CINF */;
+
+/* This stuff is certificate "auxiliary info"
+ * it contains details which are useful in certificate
+ * stores and databases. When used this is tagged onto
+ * the end of the certificate itself
+ */
+
+struct x509_cert_aux_st
+	{
+	STACK_OF(ASN1_OBJECT) *trust;		/* trusted uses */
+	STACK_OF(ASN1_OBJECT) *reject;		/* rejected uses */
+	ASN1_UTF8STRING *alias;			/* "friendly name" */
+	ASN1_OCTET_STRING *keyid;		/* key id of private key */
+	STACK_OF(X509_ALGOR) *other;		/* other unspecified info */
+	} /* X509_CERT_AUX */;
+
+DECLARE_STACK_OF(DIST_POINT)
+DECLARE_STACK_OF(GENERAL_NAME)
+
+struct x509_st
+	{
+	X509_CINF *cert_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	char *name;
+	CRYPTO_EX_DATA ex_data;
+	/* These contain copies of various extension values */
+	long ex_pathlen;
+	long ex_pcpathlen;
+	unsigned long ex_flags;
+	unsigned long ex_kusage;
+	unsigned long ex_xkusage;
+	unsigned long ex_nscert;
+	ASN1_OCTET_STRING *skid;
+	AUTHORITY_KEYID *akid;
+	X509_POLICY_CACHE *policy_cache;
+	STACK_OF(DIST_POINT) *crldp;
+	STACK_OF(GENERAL_NAME) *altname;
+	NAME_CONSTRAINTS *nc;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	X509_CERT_AUX *aux;
+	CRYPTO_BUFFER *buf;
+	CRYPTO_MUTEX lock;
+	} /* X509 */;
+
+DEFINE_STACK_OF(X509)
+DECLARE_ASN1_SET_OF(X509)
+
+/* This is used for a table of trust checking functions */
+
+struct x509_trust_st {
+	int trust;
+	int flags;
+	int (*check_trust)(struct x509_trust_st *, X509 *, int);
+	char *name;
+	int arg1;
+	void *arg2;
+} /* X509_TRUST */;
+
+DEFINE_STACK_OF(X509_TRUST)
+
+/* standard trust ids */
+
+#define X509_TRUST_DEFAULT	(-1)	/* Only valid in purpose settings */
+
+#define X509_TRUST_COMPAT	1
+#define X509_TRUST_SSL_CLIENT	2
+#define X509_TRUST_SSL_SERVER	3
+#define X509_TRUST_EMAIL	4
+#define X509_TRUST_OBJECT_SIGN	5
+#define X509_TRUST_OCSP_SIGN	6
+#define X509_TRUST_OCSP_REQUEST	7
+#define X509_TRUST_TSA		8
+
+/* Keep these up to date! */
+#define X509_TRUST_MIN		1
+#define X509_TRUST_MAX		8
+
+
+/* trust_flags values */
+#define	X509_TRUST_DYNAMIC 	1
+#define	X509_TRUST_DYNAMIC_NAME	2
+
+/* check_trust return codes */
+
+#define X509_TRUST_TRUSTED	1
+#define X509_TRUST_REJECTED	2
+#define X509_TRUST_UNTRUSTED	3
+
+/* Flags for X509_print_ex() */
+
+#define	X509_FLAG_COMPAT		0
+#define	X509_FLAG_NO_HEADER		1L
+#define	X509_FLAG_NO_VERSION		(1L << 1)
+#define	X509_FLAG_NO_SERIAL		(1L << 2)
+#define	X509_FLAG_NO_SIGNAME		(1L << 3)
+#define	X509_FLAG_NO_ISSUER		(1L << 4)
+#define	X509_FLAG_NO_VALIDITY		(1L << 5)
+#define	X509_FLAG_NO_SUBJECT		(1L << 6)
+#define	X509_FLAG_NO_PUBKEY		(1L << 7)
+#define	X509_FLAG_NO_EXTENSIONS		(1L << 8)
+#define	X509_FLAG_NO_SIGDUMP		(1L << 9)
+#define	X509_FLAG_NO_AUX		(1L << 10)
+#define	X509_FLAG_NO_ATTRIBUTES		(1L << 11)
+#define	X509_FLAG_NO_IDS		(1L << 12)
+
+/* Flags specific to X509_NAME_print_ex() */	
+
+/* The field separator information */
+
+#define XN_FLAG_SEP_MASK	(0xf << 16)
+
+#define XN_FLAG_COMPAT		0		/* Traditional SSLeay: use old X509_NAME_print */
+#define XN_FLAG_SEP_COMMA_PLUS	(1 << 16)	/* RFC2253 ,+ */
+#define XN_FLAG_SEP_CPLUS_SPC	(2 << 16)	/* ,+ spaced: more readable */
+#define XN_FLAG_SEP_SPLUS_SPC	(3 << 16)	/* ;+ spaced */
+#define XN_FLAG_SEP_MULTILINE	(4 << 16)	/* One line per field */
+
+#define XN_FLAG_DN_REV		(1 << 20)	/* Reverse DN order */
+
+/* How the field name is shown */
+
+#define XN_FLAG_FN_MASK		(0x3 << 21)
+
+#define XN_FLAG_FN_SN		0		/* Object short name */
+#define XN_FLAG_FN_LN		(1 << 21)	/* Object long name */
+#define XN_FLAG_FN_OID		(2 << 21)	/* Always use OIDs */
+#define XN_FLAG_FN_NONE		(3 << 21)	/* No field names */
+
+#define XN_FLAG_SPC_EQ		(1 << 23)	/* Put spaces round '=' */
+
+/* This determines if we dump fields we don't recognise:
+ * RFC2253 requires this.
+ */
+
+#define XN_FLAG_DUMP_UNKNOWN_FIELDS (1 << 24)
+
+#define XN_FLAG_FN_ALIGN	(1 << 25)	/* Align field names to 20 characters */
+
+/* Complete set of RFC2253 flags */
+
+#define XN_FLAG_RFC2253 (ASN1_STRFLGS_RFC2253 | \
+			XN_FLAG_SEP_COMMA_PLUS | \
+			XN_FLAG_DN_REV | \
+			XN_FLAG_FN_SN | \
+			XN_FLAG_DUMP_UNKNOWN_FIELDS)
+
+/* readable oneline form */
+
+#define XN_FLAG_ONELINE (ASN1_STRFLGS_RFC2253 | \
+			ASN1_STRFLGS_ESC_QUOTE | \
+			XN_FLAG_SEP_CPLUS_SPC | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_SN)
+
+/* readable multiline form */
+
+#define XN_FLAG_MULTILINE (ASN1_STRFLGS_ESC_CTRL | \
+			ASN1_STRFLGS_ESC_MSB | \
+			XN_FLAG_SEP_MULTILINE | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_LN | \
+			XN_FLAG_FN_ALIGN)
+
+struct x509_revoked_st
+	{
+	ASN1_INTEGER *serialNumber;
+	ASN1_TIME *revocationDate;
+	STACK_OF(X509_EXTENSION) /* optional */ *extensions;
+	/* Set up if indirect CRL */
+	STACK_OF(GENERAL_NAME) *issuer;
+	/* Revocation reason */
+	int reason;
+	int sequence; /* load sequence */
+	};
+
+DEFINE_STACK_OF(X509_REVOKED)
+DECLARE_ASN1_SET_OF(X509_REVOKED)
+
+struct X509_crl_info_st
+	{
+	ASN1_INTEGER *version;
+	X509_ALGOR *sig_alg;
+	X509_NAME *issuer;
+	ASN1_TIME *lastUpdate;
+	ASN1_TIME *nextUpdate;
+	STACK_OF(X509_REVOKED) *revoked;
+	STACK_OF(X509_EXTENSION) /* [0] */ *extensions;
+	ASN1_ENCODING enc;
+	} /* X509_CRL_INFO */;
+
+DECLARE_STACK_OF(GENERAL_NAMES)
+
+struct X509_crl_st
+	{
+	/* actual signature */
+	X509_CRL_INFO *crl;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	int flags;
+	/* Copies of various extensions */
+	AUTHORITY_KEYID *akid;
+	ISSUING_DIST_POINT *idp;
+	/* Convenient breakdown of IDP */
+	int idp_flags;
+	int idp_reasons;
+	/* CRL and base CRL numbers for delta processing */
+	ASN1_INTEGER *crl_number;
+	ASN1_INTEGER *base_crl_number;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	STACK_OF(GENERAL_NAMES) *issuers;
+	const X509_CRL_METHOD *meth;
+	void *meth_data;
+	} /* X509_CRL */;
+
+DEFINE_STACK_OF(X509_CRL)
+DECLARE_ASN1_SET_OF(X509_CRL)
+
+struct private_key_st
+	{
+	int version;
+	/* The PKCS#8 data types */
+	X509_ALGOR *enc_algor;
+	ASN1_OCTET_STRING *enc_pkey;	/* encrypted pub key */
+
+	/* When decrypted, the following will not be NULL */
+	EVP_PKEY *dec_pkey;
+
+	/* used to encrypt and decrypt */
+	int key_length;
+	char *key_data;
+	int key_free;	/* true if we should auto free key_data */
+
+	/* expanded version of 'enc_algor' */
+	EVP_CIPHER_INFO cipher;
+	} /* X509_PKEY */;
+
+#ifndef OPENSSL_NO_EVP
+struct X509_info_st
+	{
+	X509 *x509;
+	X509_CRL *crl;
+	X509_PKEY *x_pkey;
+
+	EVP_CIPHER_INFO enc_cipher;
+	int enc_len;
+	char *enc_data;
+
+	} /* X509_INFO */;
+
+DEFINE_STACK_OF(X509_INFO)
+#endif
+
+/* The next 2 structures and their 8 routines were sent to me by
+ * Pat Richard <patr@x509.com> and are used to manipulate
+ * Netscapes spki structures - useful if you are writing a CA web page
+ */
+struct Netscape_spkac_st
+	{
+	X509_PUBKEY *pubkey;
+	ASN1_IA5STRING *challenge;	/* challenge sent in atlas >= PR2 */
+	} /* NETSCAPE_SPKAC */;
+
+struct Netscape_spki_st
+	{
+	NETSCAPE_SPKAC *spkac;	/* signed public key and challenge */
+	X509_ALGOR *sig_algor;
+	ASN1_BIT_STRING *signature;
+	} /* NETSCAPE_SPKI */;
+
+/* PKCS#8 private key info structure */
+
+struct pkcs8_priv_key_info_st
+        {
+        int broken;     /* Flag for various broken formats */
+#define PKCS8_OK		0
+#define PKCS8_NO_OCTET		1
+#define PKCS8_EMBEDDED_PARAM	2
+#define PKCS8_NS_DB		3
+#define PKCS8_NEG_PRIVKEY	4
+        ASN1_INTEGER *version;
+        X509_ALGOR *pkeyalg;
+        ASN1_TYPE *pkey; /* Should be OCTET STRING but some are broken */
+        STACK_OF(X509_ATTRIBUTE) *attributes;
+        };
+
+#ifdef  __cplusplus
+}
+#endif
+
+#include <openssl/x509_vfy.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define		X509_get_version(x) ASN1_INTEGER_get((x)->cert_info->version)
+/* #define	X509_get_serialNumber(x) ((x)->cert_info->serialNumber) */
+#define		X509_get_notBefore(x) ((x)->cert_info->validity->notBefore)
+#define		X509_get_notAfter(x) ((x)->cert_info->validity->notAfter)
+#define		X509_get_cert_info(x) ((x)->cert_info)
+#define		X509_extract_key(x)	X509_get_pubkey(x) /*****/
+#define		X509_REQ_get_version(x) ASN1_INTEGER_get((x)->req_info->version)
+#define		X509_REQ_get_subject_name(x) ((x)->req_info->subject)
+#define		X509_REQ_extract_key(a)	X509_REQ_get_pubkey(a)
+#define		X509_name_cmp(a,b)	X509_NAME_cmp((a),(b))
+#define		X509_get_signature_type(x) EVP_PKEY_type(OBJ_obj2nid((x)->sig_alg->algorithm))
+
+#define		X509_CRL_get_version(x) ASN1_INTEGER_get((x)->crl->version)
+const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl);
+const ASN1_TIME *X509_CRL_get0_nextUpdate(const X509_CRL *crl);
+#define 	X509_CRL_get_lastUpdate(x) ((x)->crl->lastUpdate)
+#define 	X509_CRL_get_nextUpdate(x) ((x)->crl->nextUpdate)
+#define		X509_CRL_get_issuer(x) ((x)->crl->issuer)
+#define		X509_CRL_get_REVOKED(x) ((x)->crl->revoked)
+
+#define		X509_CINF_set_modified(c) ((c)->enc.modified = 1)
+#define		X509_CINF_get_issuer(c) (&(c)->issuer)
+#define		X509_CINF_get_extensions(c) ((c)->extensions)
+#define		X509_CINF_get_signature(c) ((c)->signature)
+
+OPENSSL_EXPORT void X509_CRL_set_default_method(const X509_CRL_METHOD *meth);
+OPENSSL_EXPORT X509_CRL_METHOD *X509_CRL_METHOD_new(
+	int (*crl_init)(X509_CRL *crl),
+	int (*crl_free)(X509_CRL *crl),
+	int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret,
+				ASN1_INTEGER *ser, X509_NAME *issuer),
+	int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk));
+OPENSSL_EXPORT void X509_CRL_METHOD_free(X509_CRL_METHOD *m);
+
+OPENSSL_EXPORT void X509_CRL_set_meth_data(X509_CRL *crl, void *dat);
+OPENSSL_EXPORT void *X509_CRL_get_meth_data(X509_CRL *crl);
+
+/* This one is only used so that a binary form can output, as in
+ * i2d_X509_NAME(X509_get_X509_PUBKEY(x),&buf) */
+#define 	X509_get_X509_PUBKEY(x) ((x)->cert_info->key)
+
+
+OPENSSL_EXPORT const char *X509_verify_cert_error_string(long n);
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT int X509_verify(X509 *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r);
+OPENSSL_EXPORT int X509_CRL_verify(X509_CRL *a, EVP_PKEY *r);
+OPENSSL_EXPORT int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT NETSCAPE_SPKI * NETSCAPE_SPKI_b64_decode(const char *str, int len);
+OPENSSL_EXPORT char * NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki);
+
+OPENSSL_EXPORT int X509_signature_dump(BIO *bp,const ASN1_STRING *sig, int indent);
+OPENSSL_EXPORT int X509_signature_print(BIO *bp, const X509_ALGOR *alg,
+                                        const ASN1_STRING *sig);
+
+OPENSSL_EXPORT int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md);
+
+OPENSSL_EXPORT int X509_pubkey_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_CRL_digest(const X509_CRL *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_REQ_digest(const X509_REQ *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_NAME_digest(const X509_NAME *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+#endif
+
+/* X509_parse_from_buffer parses an X.509 structure from |buf| and returns a
+ * fresh X509 or NULL on error. There must not be any trailing data in |buf|.
+ * The returned structure (if any) holds a reference to |buf| rather than
+ * copying parts of it as a normal |d2i_X509| call would do. */
+OPENSSL_EXPORT X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT X509 *d2i_X509_fp(FILE *fp, X509 **x509);
+OPENSSL_EXPORT int i2d_X509_fp(FILE *fp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_fp(FILE *fp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_fp(FILE *fp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_fp(FILE *fp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_fp(FILE *fp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_fp(FILE *fp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_fp(FILE *fp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_fp(FILE *fp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_fp(FILE *fp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_fp(FILE *fp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_fp(FILE *fp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_fp(FILE *fp, EVP_PKEY **a);
+#endif
+
+OPENSSL_EXPORT X509 *d2i_X509_bio(BIO *bp,X509 **x509);
+OPENSSL_EXPORT int i2d_X509_bio(BIO *bp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_bio(BIO *bp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_bio(BIO *bp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_bio(BIO *bp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_bio(BIO *bp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_bio(BIO *bp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_bio(BIO *bp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_bio(BIO *bp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_bio(BIO *bp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_bio(BIO *bp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT DH *d2i_DHparams_bio(BIO *bp, DH **dh);
+OPENSSL_EXPORT int i2d_DHparams_bio(BIO *bp, const DH *dh);
+
+OPENSSL_EXPORT X509 *X509_dup(X509 *x509);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_dup(X509_ATTRIBUTE *xa);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_dup(X509_EXTENSION *ex);
+OPENSSL_EXPORT X509_CRL *X509_CRL_dup(X509_CRL *crl);
+OPENSSL_EXPORT X509_REVOKED *X509_REVOKED_dup(X509_REVOKED *rev);
+OPENSSL_EXPORT X509_REQ *X509_REQ_dup(X509_REQ *req);
+OPENSSL_EXPORT X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *xn);
+OPENSSL_EXPORT int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype, void *pval);
+OPENSSL_EXPORT void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
+                                    const void **ppval,
+                                    const X509_ALGOR *algor);
+OPENSSL_EXPORT void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
+OPENSSL_EXPORT int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
+
+OPENSSL_EXPORT X509_NAME *X509_NAME_dup(X509_NAME *xn);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_dup(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder,
+                                      size_t *pderlen);
+
+OPENSSL_EXPORT int		X509_cmp_time(const ASN1_TIME *s, time_t *t);
+OPENSSL_EXPORT int		X509_cmp_current_time(const ASN1_TIME *s);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj(ASN1_TIME *s, long adj, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj_ex(ASN1_TIME *s, int offset_day, long offset_sec, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_gmtime_adj(ASN1_TIME *s, long adj);
+
+OPENSSL_EXPORT const char *	X509_get_default_cert_area(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_private_dir(void );
+
+OPENSSL_EXPORT X509_REQ *	X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT X509 *		X509_REQ_to_X509(X509_REQ *r, int days,EVP_PKEY *pkey);
+
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_ALGORS, X509_ALGORS, X509_ALGORS)
+DECLARE_ASN1_FUNCTIONS(X509_VAL)
+
+DECLARE_ASN1_FUNCTIONS(X509_PUBKEY)
+
+OPENSSL_EXPORT int		X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_PUBKEY_get(X509_PUBKEY *key);
+OPENSSL_EXPORT int		i2d_PUBKEY(const EVP_PKEY *a,unsigned char **pp);
+OPENSSL_EXPORT EVP_PKEY *	d2i_PUBKEY(EVP_PKEY **a,const unsigned char **pp,
+			long length);
+OPENSSL_EXPORT int		i2d_RSA_PUBKEY(const RSA *a,unsigned char **pp);
+OPENSSL_EXPORT RSA *		d2i_RSA_PUBKEY(RSA **a,const unsigned char **pp,
+			long length);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT int		i2d_DSA_PUBKEY(const DSA *a,unsigned char **pp);
+OPENSSL_EXPORT DSA *		d2i_DSA_PUBKEY(DSA **a,const unsigned char **pp,
+			long length);
+#endif
+OPENSSL_EXPORT int		i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp);
+OPENSSL_EXPORT EC_KEY 		*d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp,
+			long length);
+
+DECLARE_ASN1_FUNCTIONS(X509_SIG)
+DECLARE_ASN1_FUNCTIONS(X509_REQ_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_REQ)
+
+DECLARE_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value);
+
+DECLARE_ASN1_FUNCTIONS(X509_EXTENSION)
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_EXTENSIONS, X509_EXTENSIONS, X509_EXTENSIONS)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME)
+
+OPENSSL_EXPORT int		X509_NAME_set(X509_NAME **xn, X509_NAME *name);
+
+DECLARE_ASN1_FUNCTIONS(X509_CINF)
+
+DECLARE_ASN1_FUNCTIONS(X509)
+DECLARE_ASN1_FUNCTIONS(X509_CERT_AUX)
+
+/* X509_up_ref adds one to the reference count of |x| and returns one. */
+OPENSSL_EXPORT int X509_up_ref(X509 *x);
+
+OPENSSL_EXPORT int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	     CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int X509_set_ex_data(X509 *r, int idx, void *arg);
+OPENSSL_EXPORT void *X509_get_ex_data(X509 *r, int idx);
+OPENSSL_EXPORT int		i2d_X509_AUX(X509 *a,unsigned char **pp);
+OPENSSL_EXPORT X509 *		d2i_X509_AUX(X509 **a,const unsigned char **pp,long length);
+
+OPENSSL_EXPORT int i2d_re_X509_tbs(X509 *x, unsigned char **pp);
+
+OPENSSL_EXPORT void X509_get0_signature(const ASN1_BIT_STRING **psig,
+                                        const X509_ALGOR **palg, const X509 *x);
+OPENSSL_EXPORT int X509_get_signature_nid(const X509 *x);
+
+OPENSSL_EXPORT int X509_alias_set1(X509 *x, unsigned char *name, int len);
+OPENSSL_EXPORT int X509_keyid_set1(X509 *x, unsigned char *id, int len);
+OPENSSL_EXPORT unsigned char * X509_alias_get0(X509 *x, int *len);
+OPENSSL_EXPORT unsigned char * X509_keyid_get0(X509 *x, int *len);
+OPENSSL_EXPORT int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int);
+OPENSSL_EXPORT int X509_TRUST_set(int *t, int trust);
+OPENSSL_EXPORT int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT void X509_trust_clear(X509 *x);
+OPENSSL_EXPORT void X509_reject_clear(X509 *x);
+
+DECLARE_ASN1_FUNCTIONS(X509_REVOKED)
+DECLARE_ASN1_FUNCTIONS(X509_CRL_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_CRL)
+
+OPENSSL_EXPORT int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
+OPENSSL_EXPORT int X509_CRL_get0_by_serial(X509_CRL *crl,
+		X509_REVOKED **ret, ASN1_INTEGER *serial);
+OPENSSL_EXPORT int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x);
+
+OPENSSL_EXPORT X509_PKEY *	X509_PKEY_new(void );
+OPENSSL_EXPORT void		X509_PKEY_free(X509_PKEY *a);
+
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKI)
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKAC)
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT X509_INFO *	X509_INFO_new(void);
+OPENSSL_EXPORT void		X509_INFO_free(X509_INFO *a);
+OPENSSL_EXPORT char *		X509_NAME_oneline(X509_NAME *a,char *buf,int size);
+
+OPENSSL_EXPORT int ASN1_digest(i2d_of_void *i2d,const EVP_MD *type,char *data,
+		unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_digest(const ASN1_ITEM *it,const EVP_MD *type,void *data,
+	unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *algor1,
+	ASN1_BIT_STRING *signature,void *data,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
+	ASN1_BIT_STRING *signature,
+	void *data, EVP_PKEY *pkey, const EVP_MD *type);
+OPENSSL_EXPORT int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+		X509_ALGOR *algor1, X509_ALGOR *algor2,
+	     	ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx);
+#endif
+
+OPENSSL_EXPORT int 		X509_set_version(X509 *x,long version);
+OPENSSL_EXPORT int 		X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT ASN1_INTEGER *	X509_get_serialNumber(X509 *x);
+OPENSSL_EXPORT int 		X509_set_issuer_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_issuer_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_subject_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_subject_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_notBefore(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notBefore(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_notAfter(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notAfter(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_pubkey(X509 *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_get_pubkey(X509 *x);
+OPENSSL_EXPORT ASN1_BIT_STRING * X509_get0_pubkey_bitstr(const X509 *x);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x);
+OPENSSL_EXPORT const X509_ALGOR *X509_get0_tbs_sigalg(const X509 *x);
+
+OPENSSL_EXPORT int		X509_REQ_set_version(X509_REQ *x,long version);
+OPENSSL_EXPORT int		X509_REQ_set_subject_name(X509_REQ *req,X509_NAME *name);
+OPENSSL_EXPORT void X509_REQ_get0_signature(const X509_REQ *req,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_REQ_get_signature_nid(const X509_REQ *req);
+OPENSSL_EXPORT int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp);
+OPENSSL_EXPORT int		X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_REQ_get_pubkey(X509_REQ *req);
+OPENSSL_EXPORT int		X509_REQ_extension_nid(int nid);
+OPENSSL_EXPORT const int *	X509_REQ_get_extension_nids(void);
+OPENSSL_EXPORT void		X509_REQ_set_extension_nids(const int *nids);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+				int nid);
+OPENSSL_EXPORT int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts);
+OPENSSL_EXPORT int X509_REQ_get_attr_count(const X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc);
+OPENSSL_EXPORT int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_txt(X509_REQ *req,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+
+OPENSSL_EXPORT int X509_CRL_set_version(X509_CRL *x, long version);
+OPENSSL_EXPORT int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name);
+OPENSSL_EXPORT int X509_CRL_set_lastUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_set_nextUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_sort(X509_CRL *crl);
+OPENSSL_EXPORT int X509_CRL_up_ref(X509_CRL *crl);
+
+OPENSSL_EXPORT void X509_CRL_get0_signature(const X509_CRL *crl,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_CRL_get_signature_nid(const X509_CRL *crl);
+OPENSSL_EXPORT int i2d_re_X509_CRL_tbs(X509_CRL *req, unsigned char **pp);
+
+OPENSSL_EXPORT const ASN1_INTEGER *X509_REVOKED_get0_serialNumber(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_serialNumber(X509_REVOKED *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT const ASN1_TIME *X509_REVOKED_get0_revocationDate(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_revocationDate(X509_REVOKED *r, ASN1_TIME *tm);
+
+OPENSSL_EXPORT X509_CRL *X509_CRL_diff(X509_CRL *base, X509_CRL *newer,
+			EVP_PKEY *skey, const EVP_MD *md, unsigned int flags);
+
+OPENSSL_EXPORT int		X509_REQ_check_private_key(X509_REQ *x509,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int		X509_check_private_key(X509 *x509, const EVP_PKEY *pkey);
+OPENSSL_EXPORT int 		X509_chain_check_suiteb(int *perror_depth,
+						X509 *x, STACK_OF(X509) *chain,
+						unsigned long flags);
+OPENSSL_EXPORT int 		X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk,
+						unsigned long flags);
+OPENSSL_EXPORT STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain);
+
+OPENSSL_EXPORT int		X509_issuer_and_serial_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_and_serial_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_issuer_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_subject_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash(X509 *x);
+
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash_old(X509 *a);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash_old(X509 *x);
+
+OPENSSL_EXPORT int		X509_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT int		X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash(X509_NAME *x);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash_old(X509_NAME *x);
+
+OPENSSL_EXPORT int		X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b);
+OPENSSL_EXPORT int		X509_CRL_match(const X509_CRL *a, const X509_CRL *b);
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT int		X509_print_ex_fp(FILE *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print_fp(FILE *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CRL_print_fp(FILE *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_fp(FILE *bp,X509_REQ *req);
+OPENSSL_EXPORT int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int		X509_NAME_print(BIO *bp, X509_NAME *name, int obase);
+OPENSSL_EXPORT int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags);
+OPENSSL_EXPORT int		X509_print_ex(BIO *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_ocspid_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CERT_AUX_print(BIO *bp,X509_CERT_AUX *x, int indent);
+OPENSSL_EXPORT int		X509_CRL_print(BIO *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_REQ_print(BIO *bp,X509_REQ *req);
+
+OPENSSL_EXPORT int 		X509_NAME_entry_count(X509_NAME *name);
+OPENSSL_EXPORT int 		X509_NAME_get_text_by_NID(X509_NAME *name, int nid,
+			char *buf,int len);
+OPENSSL_EXPORT int		X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			char *buf,int len);
+
+/* NOTE: you should be passsing -1, not 0 as lastpos.  The functions that use
+ * lastpos, search after that position on. */
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_NID(X509_NAME *name,int nid,int lastpos);
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			int lastpos);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT int 		X509_NAME_add_entry(X509_NAME *name,X509_NAME_ENTRY *ne,
+			int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
+		const char *field, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
+			int type,unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
+			const unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
+			const ASN1_OBJECT *obj, int type,const unsigned char *bytes,
+			int len);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne,
+			const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT ASN1_STRING *	X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int		X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x);
+OPENSSL_EXPORT int		X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x,
+				      int nid, int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *x,
+				      const ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *x,
+					   int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
+					 X509_EXTENSION *ex, int loc);
+
+OPENSSL_EXPORT int		X509_get_ext_count(X509 *x);
+OPENSSL_EXPORT int		X509_get_ext_by_NID(X509 *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_OBJ(X509 *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_critical(X509 *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_get_ext(X509 *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_delete_ext(X509 *x, int loc);
+OPENSSL_EXPORT int		X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_CRL_get_ext_count(X509_CRL *x);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_OBJ(X509_CRL *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_critical(X509_CRL *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT int		X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_count(X509_REVOKED *x);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_OBJ(X509_REVOKED *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_critical(X509_REVOKED *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT int		X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex,
+			int nid, int crit, ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
+			const ASN1_OBJECT *obj,int crit,ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT int		X509_EXTENSION_set_object(X509_EXTENSION *ex,const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int		X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit);
+OPENSSL_EXPORT int		X509_EXTENSION_set_data(X509_EXTENSION *ex,
+			ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_EXTENSION_get_object(X509_EXTENSION *ex);
+OPENSSL_EXPORT ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ne);
+OPENSSL_EXPORT int		X509_EXTENSION_get_critical(X509_EXTENSION *ex);
+
+OPENSSL_EXPORT int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x);
+OPENSSL_EXPORT int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, const ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
+					 X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
+				ASN1_OBJECT *obj, int lastpos, int type);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
+	     int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
+	     const ASN1_OBJECT *obj, int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
+		const char *atrname, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len);
+OPENSSL_EXPORT void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
+					int atrtype, void *data);
+OPENSSL_EXPORT int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx);
+
+OPENSSL_EXPORT int		X509_verify_cert(X509_STORE_CTX *ctx);
+
+/* lookup a cert from a X509 STACK */
+OPENSSL_EXPORT X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk,X509_NAME *name,
+				     ASN1_INTEGER *serial);
+OPENSSL_EXPORT X509 *X509_find_by_subject(STACK_OF(X509) *sk,X509_NAME *name);
+
+/* PKCS#8 utilities */
+
+DECLARE_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
+
+OPENSSL_EXPORT EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken);
+
+OPENSSL_EXPORT int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
+			int version, int ptype, void *pval,
+				unsigned char *penc, int penclen);
+OPENSSL_EXPORT int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		PKCS8_PRIV_KEY_INFO *p8);
+
+OPENSSL_EXPORT int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+					int ptype, void *pval,
+					unsigned char *penc, int penclen);
+OPENSSL_EXPORT int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		X509_PUBKEY *pub);
+
+OPENSSL_EXPORT int X509_check_trust(X509 *x, int id, int flags);
+OPENSSL_EXPORT int X509_TRUST_get_count(void);
+OPENSSL_EXPORT X509_TRUST * X509_TRUST_get0(int idx);
+OPENSSL_EXPORT int X509_TRUST_get_by_id(int id);
+OPENSSL_EXPORT int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
+					char *name, int arg1, void *arg2);
+OPENSSL_EXPORT void X509_TRUST_cleanup(void);
+OPENSSL_EXPORT int X509_TRUST_get_flags(X509_TRUST *xp);
+OPENSSL_EXPORT char *X509_TRUST_get0_name(X509_TRUST *xp);
+OPENSSL_EXPORT int X509_TRUST_get_trust(X509_TRUST *xp);
+
+
+typedef struct rsa_pss_params_st {
+  X509_ALGOR *hashAlgorithm;
+  X509_ALGOR *maskGenAlgorithm;
+  ASN1_INTEGER *saltLength;
+  ASN1_INTEGER *trailerField;
+} RSA_PSS_PARAMS;
+
+DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
+
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(NETSCAPE_SPKI, NETSCAPE_SPKI_free)
+BORINGSSL_MAKE_DELETER(RSA_PSS_PARAMS, RSA_PSS_PARAMS_free)
+BORINGSSL_MAKE_DELETER(X509, X509_free)
+BORINGSSL_MAKE_UP_REF(X509, X509_up_ref)
+BORINGSSL_MAKE_DELETER(X509_ALGOR, X509_ALGOR_free)
+BORINGSSL_MAKE_DELETER(X509_CRL, X509_CRL_free)
+BORINGSSL_MAKE_UP_REF(X509_CRL, X509_CRL_up_ref)
+BORINGSSL_MAKE_DELETER(X509_CRL_METHOD, X509_CRL_METHOD_free)
+BORINGSSL_MAKE_DELETER(X509_EXTENSION, X509_EXTENSION_free)
+BORINGSSL_MAKE_DELETER(X509_INFO, X509_INFO_free)
+BORINGSSL_MAKE_DELETER(X509_LOOKUP, X509_LOOKUP_free)
+BORINGSSL_MAKE_DELETER(X509_NAME, X509_NAME_free)
+BORINGSSL_MAKE_DELETER(X509_NAME_ENTRY, X509_NAME_ENTRY_free)
+BORINGSSL_MAKE_DELETER(X509_PKEY, X509_PKEY_free)
+BORINGSSL_MAKE_DELETER(X509_POLICY_TREE, X509_policy_tree_free)
+BORINGSSL_MAKE_DELETER(X509_PUBKEY, X509_PUBKEY_free)
+BORINGSSL_MAKE_DELETER(X509_REQ, X509_REQ_free)
+BORINGSSL_MAKE_DELETER(X509_REVOKED, X509_REVOKED_free)
+BORINGSSL_MAKE_DELETER(X509_SIG, X509_SIG_free)
+BORINGSSL_MAKE_DELETER(X509_STORE, X509_STORE_free)
+BORINGSSL_MAKE_DELETER(X509_STORE_CTX, X509_STORE_CTX_free)
+BORINGSSL_MAKE_DELETER(X509_VERIFY_PARAM, X509_VERIFY_PARAM_free)
+
+using ScopedX509_STORE_CTX =
+    internal::StackAllocated<X509_STORE_CTX, void, X509_STORE_CTX_zero,
+                             X509_STORE_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif  /* !BORINGSSL_NO_CXX */
+
+#define X509_R_AKID_MISMATCH 100
+#define X509_R_BAD_PKCS7_VERSION 101
+#define X509_R_BAD_X509_FILETYPE 102
+#define X509_R_BASE64_DECODE_ERROR 103
+#define X509_R_CANT_CHECK_DH_KEY 104
+#define X509_R_CERT_ALREADY_IN_HASH_TABLE 105
+#define X509_R_CRL_ALREADY_DELTA 106
+#define X509_R_CRL_VERIFY_FAILURE 107
+#define X509_R_IDP_MISMATCH 108
+#define X509_R_INVALID_BIT_STRING_BITS_LEFT 109
+#define X509_R_INVALID_DIRECTORY 110
+#define X509_R_INVALID_FIELD_NAME 111
+#define X509_R_INVALID_PSS_PARAMETERS 112
+#define X509_R_INVALID_TRUST 113
+#define X509_R_ISSUER_MISMATCH 114
+#define X509_R_KEY_TYPE_MISMATCH 115
+#define X509_R_KEY_VALUES_MISMATCH 116
+#define X509_R_LOADING_CERT_DIR 117
+#define X509_R_LOADING_DEFAULTS 118
+#define X509_R_NEWER_CRL_NOT_NEWER 119
+#define X509_R_NOT_PKCS7_SIGNED_DATA 120
+#define X509_R_NO_CERTIFICATES_INCLUDED 121
+#define X509_R_NO_CERT_SET_FOR_US_TO_VERIFY 122
+#define X509_R_NO_CRLS_INCLUDED 123
+#define X509_R_NO_CRL_NUMBER 124
+#define X509_R_PUBLIC_KEY_DECODE_ERROR 125
+#define X509_R_PUBLIC_KEY_ENCODE_ERROR 126
+#define X509_R_SHOULD_RETRY 127
+#define X509_R_UNKNOWN_KEY_TYPE 128
+#define X509_R_UNKNOWN_NID 129
+#define X509_R_UNKNOWN_PURPOSE_ID 130
+#define X509_R_UNKNOWN_TRUST_ID 131
+#define X509_R_UNSUPPORTED_ALGORITHM 132
+#define X509_R_WRONG_LOOKUP_TYPE 133
+#define X509_R_WRONG_TYPE 134
+#define X509_R_NAME_TOO_LONG 135
+#define X509_R_INVALID_PARAMETER 136
+#define X509_R_SIGNATURE_ALGORITHM_MISMATCH 137
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.grpc_back
new file mode 100644
index 0000000..ee3eccc
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509.h.grpc_back	
@@ -0,0 +1,1205 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECDH support in OpenSSL originally developed by 
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+
+#ifndef HEADER_X509_H
+#define HEADER_X509_H
+
+#include <openssl/base.h>
+
+#include <time.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/cipher.h>
+#include <openssl/dh.h>
+#include <openssl/dsa.h>
+#include <openssl/ecdh.h>
+#include <openssl/ecdsa.h>
+#include <openssl/ec.h>
+#include <openssl/evp.h>
+#include <openssl/obj.h>
+#include <openssl/pkcs7.h>
+#include <openssl/pool.h>
+#include <openssl/rsa.h>
+#include <openssl/sha.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+#define X509_FILETYPE_PEM	1
+#define X509_FILETYPE_ASN1	2
+#define X509_FILETYPE_DEFAULT	3
+
+#define X509v3_KU_DIGITAL_SIGNATURE	0x0080
+#define X509v3_KU_NON_REPUDIATION	0x0040
+#define X509v3_KU_KEY_ENCIPHERMENT	0x0020
+#define X509v3_KU_DATA_ENCIPHERMENT	0x0010
+#define X509v3_KU_KEY_AGREEMENT		0x0008
+#define X509v3_KU_KEY_CERT_SIGN		0x0004
+#define X509v3_KU_CRL_SIGN		0x0002
+#define X509v3_KU_ENCIPHER_ONLY		0x0001
+#define X509v3_KU_DECIPHER_ONLY		0x8000
+#define X509v3_KU_UNDEF			0xffff
+
+DEFINE_STACK_OF(X509_ALGOR)
+DECLARE_ASN1_SET_OF(X509_ALGOR)
+
+typedef STACK_OF(X509_ALGOR) X509_ALGORS;
+
+struct X509_val_st
+	{
+	ASN1_TIME *notBefore;
+	ASN1_TIME *notAfter;
+	} /* X509_VAL */;
+
+struct X509_pubkey_st
+	{
+	X509_ALGOR *algor;
+	ASN1_BIT_STRING *public_key;
+	EVP_PKEY *pkey;
+	};
+
+struct X509_sig_st
+	{
+	X509_ALGOR *algor;
+	ASN1_OCTET_STRING *digest;
+	} /* X509_SIG */;
+
+struct X509_name_entry_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_STRING *value;
+	int set;
+	int size; 	/* temp variable */
+	} /* X509_NAME_ENTRY */;
+
+DEFINE_STACK_OF(X509_NAME_ENTRY)
+DECLARE_ASN1_SET_OF(X509_NAME_ENTRY)
+
+/* we always keep X509_NAMEs in 2 forms. */
+struct X509_name_st
+	{
+	STACK_OF(X509_NAME_ENTRY) *entries;
+	int modified;	/* true if 'bytes' needs to be built */
+	BUF_MEM *bytes;
+/*	unsigned long hash; Keep the hash around for lookups */
+	unsigned char *canon_enc;
+	int canon_enclen;
+	} /* X509_NAME */;
+
+DEFINE_STACK_OF(X509_NAME)
+
+struct X509_extension_st
+	{
+	ASN1_OBJECT *object;
+	ASN1_BOOLEAN critical;
+	ASN1_OCTET_STRING *value;
+	} /* X509_EXTENSION */;
+
+typedef STACK_OF(X509_EXTENSION) X509_EXTENSIONS;
+
+DEFINE_STACK_OF(X509_EXTENSION)
+DECLARE_ASN1_SET_OF(X509_EXTENSION)
+
+/* a sequence of these are used */
+struct x509_attributes_st
+	{
+	ASN1_OBJECT *object;
+	int single; /* 0 for a set, 1 for a single item (which is wrong) */
+	union	{
+		char		*ptr;
+/* 0 */		STACK_OF(ASN1_TYPE) *set;
+/* 1 */		ASN1_TYPE	*single;
+		} value;
+	} /* X509_ATTRIBUTE */;
+
+DEFINE_STACK_OF(X509_ATTRIBUTE)
+DECLARE_ASN1_SET_OF(X509_ATTRIBUTE)
+
+
+struct X509_req_info_st
+	{
+	ASN1_ENCODING enc;
+	ASN1_INTEGER *version;
+	X509_NAME *subject;
+	X509_PUBKEY *pubkey;
+	/*  d=2 hl=2 l=  0 cons: cont: 00 */
+	STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
+	} /* X509_REQ_INFO */;
+
+struct X509_req_st
+	{
+	X509_REQ_INFO *req_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	} /* X509_REQ */;
+
+struct x509_cinf_st
+	{
+	ASN1_INTEGER *version;		/* [ 0 ] default of v1 */
+	ASN1_INTEGER *serialNumber;
+	X509_ALGOR *signature;
+	X509_NAME *issuer;
+	X509_VAL *validity;
+	X509_NAME *subject;
+	X509_PUBKEY *key;
+	ASN1_BIT_STRING *issuerUID;		/* [ 1 ] optional in v2 */
+	ASN1_BIT_STRING *subjectUID;		/* [ 2 ] optional in v2 */
+	STACK_OF(X509_EXTENSION) *extensions;	/* [ 3 ] optional in v3 */
+	ASN1_ENCODING enc;
+	} /* X509_CINF */;
+
+/* This stuff is certificate "auxiliary info"
+ * it contains details which are useful in certificate
+ * stores and databases. When used this is tagged onto
+ * the end of the certificate itself
+ */
+
+struct x509_cert_aux_st
+	{
+	STACK_OF(ASN1_OBJECT) *trust;		/* trusted uses */
+	STACK_OF(ASN1_OBJECT) *reject;		/* rejected uses */
+	ASN1_UTF8STRING *alias;			/* "friendly name" */
+	ASN1_OCTET_STRING *keyid;		/* key id of private key */
+	STACK_OF(X509_ALGOR) *other;		/* other unspecified info */
+	} /* X509_CERT_AUX */;
+
+DECLARE_STACK_OF(DIST_POINT)
+DECLARE_STACK_OF(GENERAL_NAME)
+
+struct x509_st
+	{
+	X509_CINF *cert_info;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	char *name;
+	CRYPTO_EX_DATA ex_data;
+	/* These contain copies of various extension values */
+	long ex_pathlen;
+	long ex_pcpathlen;
+	unsigned long ex_flags;
+	unsigned long ex_kusage;
+	unsigned long ex_xkusage;
+	unsigned long ex_nscert;
+	ASN1_OCTET_STRING *skid;
+	AUTHORITY_KEYID *akid;
+	X509_POLICY_CACHE *policy_cache;
+	STACK_OF(DIST_POINT) *crldp;
+	STACK_OF(GENERAL_NAME) *altname;
+	NAME_CONSTRAINTS *nc;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	X509_CERT_AUX *aux;
+	CRYPTO_BUFFER *buf;
+	CRYPTO_MUTEX lock;
+	} /* X509 */;
+
+DEFINE_STACK_OF(X509)
+DECLARE_ASN1_SET_OF(X509)
+
+/* This is used for a table of trust checking functions */
+
+struct x509_trust_st {
+	int trust;
+	int flags;
+	int (*check_trust)(struct x509_trust_st *, X509 *, int);
+	char *name;
+	int arg1;
+	void *arg2;
+} /* X509_TRUST */;
+
+DEFINE_STACK_OF(X509_TRUST)
+
+/* standard trust ids */
+
+#define X509_TRUST_DEFAULT	(-1)	/* Only valid in purpose settings */
+
+#define X509_TRUST_COMPAT	1
+#define X509_TRUST_SSL_CLIENT	2
+#define X509_TRUST_SSL_SERVER	3
+#define X509_TRUST_EMAIL	4
+#define X509_TRUST_OBJECT_SIGN	5
+#define X509_TRUST_OCSP_SIGN	6
+#define X509_TRUST_OCSP_REQUEST	7
+#define X509_TRUST_TSA		8
+
+/* Keep these up to date! */
+#define X509_TRUST_MIN		1
+#define X509_TRUST_MAX		8
+
+
+/* trust_flags values */
+#define	X509_TRUST_DYNAMIC 	1
+#define	X509_TRUST_DYNAMIC_NAME	2
+
+/* check_trust return codes */
+
+#define X509_TRUST_TRUSTED	1
+#define X509_TRUST_REJECTED	2
+#define X509_TRUST_UNTRUSTED	3
+
+/* Flags for X509_print_ex() */
+
+#define	X509_FLAG_COMPAT		0
+#define	X509_FLAG_NO_HEADER		1L
+#define	X509_FLAG_NO_VERSION		(1L << 1)
+#define	X509_FLAG_NO_SERIAL		(1L << 2)
+#define	X509_FLAG_NO_SIGNAME		(1L << 3)
+#define	X509_FLAG_NO_ISSUER		(1L << 4)
+#define	X509_FLAG_NO_VALIDITY		(1L << 5)
+#define	X509_FLAG_NO_SUBJECT		(1L << 6)
+#define	X509_FLAG_NO_PUBKEY		(1L << 7)
+#define	X509_FLAG_NO_EXTENSIONS		(1L << 8)
+#define	X509_FLAG_NO_SIGDUMP		(1L << 9)
+#define	X509_FLAG_NO_AUX		(1L << 10)
+#define	X509_FLAG_NO_ATTRIBUTES		(1L << 11)
+#define	X509_FLAG_NO_IDS		(1L << 12)
+
+/* Flags specific to X509_NAME_print_ex() */	
+
+/* The field separator information */
+
+#define XN_FLAG_SEP_MASK	(0xf << 16)
+
+#define XN_FLAG_COMPAT		0		/* Traditional SSLeay: use old X509_NAME_print */
+#define XN_FLAG_SEP_COMMA_PLUS	(1 << 16)	/* RFC2253 ,+ */
+#define XN_FLAG_SEP_CPLUS_SPC	(2 << 16)	/* ,+ spaced: more readable */
+#define XN_FLAG_SEP_SPLUS_SPC	(3 << 16)	/* ;+ spaced */
+#define XN_FLAG_SEP_MULTILINE	(4 << 16)	/* One line per field */
+
+#define XN_FLAG_DN_REV		(1 << 20)	/* Reverse DN order */
+
+/* How the field name is shown */
+
+#define XN_FLAG_FN_MASK		(0x3 << 21)
+
+#define XN_FLAG_FN_SN		0		/* Object short name */
+#define XN_FLAG_FN_LN		(1 << 21)	/* Object long name */
+#define XN_FLAG_FN_OID		(2 << 21)	/* Always use OIDs */
+#define XN_FLAG_FN_NONE		(3 << 21)	/* No field names */
+
+#define XN_FLAG_SPC_EQ		(1 << 23)	/* Put spaces round '=' */
+
+/* This determines if we dump fields we don't recognise:
+ * RFC2253 requires this.
+ */
+
+#define XN_FLAG_DUMP_UNKNOWN_FIELDS (1 << 24)
+
+#define XN_FLAG_FN_ALIGN	(1 << 25)	/* Align field names to 20 characters */
+
+/* Complete set of RFC2253 flags */
+
+#define XN_FLAG_RFC2253 (ASN1_STRFLGS_RFC2253 | \
+			XN_FLAG_SEP_COMMA_PLUS | \
+			XN_FLAG_DN_REV | \
+			XN_FLAG_FN_SN | \
+			XN_FLAG_DUMP_UNKNOWN_FIELDS)
+
+/* readable oneline form */
+
+#define XN_FLAG_ONELINE (ASN1_STRFLGS_RFC2253 | \
+			ASN1_STRFLGS_ESC_QUOTE | \
+			XN_FLAG_SEP_CPLUS_SPC | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_SN)
+
+/* readable multiline form */
+
+#define XN_FLAG_MULTILINE (ASN1_STRFLGS_ESC_CTRL | \
+			ASN1_STRFLGS_ESC_MSB | \
+			XN_FLAG_SEP_MULTILINE | \
+			XN_FLAG_SPC_EQ | \
+			XN_FLAG_FN_LN | \
+			XN_FLAG_FN_ALIGN)
+
+struct x509_revoked_st
+	{
+	ASN1_INTEGER *serialNumber;
+	ASN1_TIME *revocationDate;
+	STACK_OF(X509_EXTENSION) /* optional */ *extensions;
+	/* Set up if indirect CRL */
+	STACK_OF(GENERAL_NAME) *issuer;
+	/* Revocation reason */
+	int reason;
+	int sequence; /* load sequence */
+	};
+
+DEFINE_STACK_OF(X509_REVOKED)
+DECLARE_ASN1_SET_OF(X509_REVOKED)
+
+struct X509_crl_info_st
+	{
+	ASN1_INTEGER *version;
+	X509_ALGOR *sig_alg;
+	X509_NAME *issuer;
+	ASN1_TIME *lastUpdate;
+	ASN1_TIME *nextUpdate;
+	STACK_OF(X509_REVOKED) *revoked;
+	STACK_OF(X509_EXTENSION) /* [0] */ *extensions;
+	ASN1_ENCODING enc;
+	} /* X509_CRL_INFO */;
+
+DECLARE_STACK_OF(GENERAL_NAMES)
+
+struct X509_crl_st
+	{
+	/* actual signature */
+	X509_CRL_INFO *crl;
+	X509_ALGOR *sig_alg;
+	ASN1_BIT_STRING *signature;
+	CRYPTO_refcount_t references;
+	int flags;
+	/* Copies of various extensions */
+	AUTHORITY_KEYID *akid;
+	ISSUING_DIST_POINT *idp;
+	/* Convenient breakdown of IDP */
+	int idp_flags;
+	int idp_reasons;
+	/* CRL and base CRL numbers for delta processing */
+	ASN1_INTEGER *crl_number;
+	ASN1_INTEGER *base_crl_number;
+	unsigned char sha1_hash[SHA_DIGEST_LENGTH];
+	STACK_OF(GENERAL_NAMES) *issuers;
+	const X509_CRL_METHOD *meth;
+	void *meth_data;
+	} /* X509_CRL */;
+
+DEFINE_STACK_OF(X509_CRL)
+DECLARE_ASN1_SET_OF(X509_CRL)
+
+struct private_key_st
+	{
+	int version;
+	/* The PKCS#8 data types */
+	X509_ALGOR *enc_algor;
+	ASN1_OCTET_STRING *enc_pkey;	/* encrypted pub key */
+
+	/* When decrypted, the following will not be NULL */
+	EVP_PKEY *dec_pkey;
+
+	/* used to encrypt and decrypt */
+	int key_length;
+	char *key_data;
+	int key_free;	/* true if we should auto free key_data */
+
+	/* expanded version of 'enc_algor' */
+	EVP_CIPHER_INFO cipher;
+	} /* X509_PKEY */;
+
+#ifndef OPENSSL_NO_EVP
+struct X509_info_st
+	{
+	X509 *x509;
+	X509_CRL *crl;
+	X509_PKEY *x_pkey;
+
+	EVP_CIPHER_INFO enc_cipher;
+	int enc_len;
+	char *enc_data;
+
+	} /* X509_INFO */;
+
+DEFINE_STACK_OF(X509_INFO)
+#endif
+
+/* The next 2 structures and their 8 routines were sent to me by
+ * Pat Richard <patr@x509.com> and are used to manipulate
+ * Netscapes spki structures - useful if you are writing a CA web page
+ */
+struct Netscape_spkac_st
+	{
+	X509_PUBKEY *pubkey;
+	ASN1_IA5STRING *challenge;	/* challenge sent in atlas >= PR2 */
+	} /* NETSCAPE_SPKAC */;
+
+struct Netscape_spki_st
+	{
+	NETSCAPE_SPKAC *spkac;	/* signed public key and challenge */
+	X509_ALGOR *sig_algor;
+	ASN1_BIT_STRING *signature;
+	} /* NETSCAPE_SPKI */;
+
+/* PKCS#8 private key info structure */
+
+struct pkcs8_priv_key_info_st
+        {
+        int broken;     /* Flag for various broken formats */
+#define PKCS8_OK		0
+#define PKCS8_NO_OCTET		1
+#define PKCS8_EMBEDDED_PARAM	2
+#define PKCS8_NS_DB		3
+#define PKCS8_NEG_PRIVKEY	4
+        ASN1_INTEGER *version;
+        X509_ALGOR *pkeyalg;
+        ASN1_TYPE *pkey; /* Should be OCTET STRING but some are broken */
+        STACK_OF(X509_ATTRIBUTE) *attributes;
+        };
+
+#ifdef  __cplusplus
+}
+#endif
+
+#include <openssl/x509_vfy.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define		X509_get_version(x) ASN1_INTEGER_get((x)->cert_info->version)
+/* #define	X509_get_serialNumber(x) ((x)->cert_info->serialNumber) */
+#define		X509_get_notBefore(x) ((x)->cert_info->validity->notBefore)
+#define		X509_get_notAfter(x) ((x)->cert_info->validity->notAfter)
+#define		X509_get_cert_info(x) ((x)->cert_info)
+#define		X509_extract_key(x)	X509_get_pubkey(x) /*****/
+#define		X509_REQ_get_version(x) ASN1_INTEGER_get((x)->req_info->version)
+#define		X509_REQ_get_subject_name(x) ((x)->req_info->subject)
+#define		X509_REQ_extract_key(a)	X509_REQ_get_pubkey(a)
+#define		X509_name_cmp(a,b)	X509_NAME_cmp((a),(b))
+#define		X509_get_signature_type(x) EVP_PKEY_type(OBJ_obj2nid((x)->sig_alg->algorithm))
+
+#define		X509_CRL_get_version(x) ASN1_INTEGER_get((x)->crl->version)
+const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl);
+const ASN1_TIME *X509_CRL_get0_nextUpdate(const X509_CRL *crl);
+#define 	X509_CRL_get_lastUpdate(x) ((x)->crl->lastUpdate)
+#define 	X509_CRL_get_nextUpdate(x) ((x)->crl->nextUpdate)
+#define		X509_CRL_get_issuer(x) ((x)->crl->issuer)
+#define		X509_CRL_get_REVOKED(x) ((x)->crl->revoked)
+
+#define		X509_CINF_set_modified(c) ((c)->enc.modified = 1)
+#define		X509_CINF_get_issuer(c) (&(c)->issuer)
+#define		X509_CINF_get_extensions(c) ((c)->extensions)
+#define		X509_CINF_get_signature(c) ((c)->signature)
+
+OPENSSL_EXPORT void X509_CRL_set_default_method(const X509_CRL_METHOD *meth);
+OPENSSL_EXPORT X509_CRL_METHOD *X509_CRL_METHOD_new(
+	int (*crl_init)(X509_CRL *crl),
+	int (*crl_free)(X509_CRL *crl),
+	int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret,
+				ASN1_INTEGER *ser, X509_NAME *issuer),
+	int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk));
+OPENSSL_EXPORT void X509_CRL_METHOD_free(X509_CRL_METHOD *m);
+
+OPENSSL_EXPORT void X509_CRL_set_meth_data(X509_CRL *crl, void *dat);
+OPENSSL_EXPORT void *X509_CRL_get_meth_data(X509_CRL *crl);
+
+/* This one is only used so that a binary form can output, as in
+ * i2d_X509_NAME(X509_get_X509_PUBKEY(x),&buf) */
+#define 	X509_get_X509_PUBKEY(x) ((x)->cert_info->key)
+
+
+OPENSSL_EXPORT const char *X509_verify_cert_error_string(long n);
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT int X509_verify(X509 *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r);
+OPENSSL_EXPORT int X509_CRL_verify(X509_CRL *a, EVP_PKEY *r);
+OPENSSL_EXPORT int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *a, EVP_PKEY *r);
+
+OPENSSL_EXPORT NETSCAPE_SPKI * NETSCAPE_SPKI_b64_decode(const char *str, int len);
+OPENSSL_EXPORT char * NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x);
+OPENSSL_EXPORT int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki);
+
+OPENSSL_EXPORT int X509_signature_dump(BIO *bp,const ASN1_STRING *sig, int indent);
+OPENSSL_EXPORT int X509_signature_print(BIO *bp, const X509_ALGOR *alg,
+                                        const ASN1_STRING *sig);
+
+OPENSSL_EXPORT int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx);
+OPENSSL_EXPORT int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md);
+
+OPENSSL_EXPORT int X509_pubkey_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_digest(const X509 *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_CRL_digest(const X509_CRL *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_REQ_digest(const X509_REQ *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+OPENSSL_EXPORT int X509_NAME_digest(const X509_NAME *data,const EVP_MD *type,
+		unsigned char *md, unsigned int *len);
+#endif
+
+/* X509_parse_from_buffer parses an X.509 structure from |buf| and returns a
+ * fresh X509 or NULL on error. There must not be any trailing data in |buf|.
+ * The returned structure (if any) holds a reference to |buf| rather than
+ * copying parts of it as a normal |d2i_X509| call would do. */
+OPENSSL_EXPORT X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf);
+
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT X509 *d2i_X509_fp(FILE *fp, X509 **x509);
+OPENSSL_EXPORT int i2d_X509_fp(FILE *fp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_fp(FILE *fp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_fp(FILE *fp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_fp(FILE *fp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_fp(FILE *fp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_fp(FILE *fp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_fp(FILE *fp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_fp(FILE *fp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_fp(FILE *fp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_fp(FILE *fp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_fp(FILE *fp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_fp(FILE *fp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_fp(FILE *fp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_fp(FILE *fp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_fp(FILE *fp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_fp(FILE *fp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_fp(FILE *fp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_fp(FILE *fp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_fp(FILE *fp, EVP_PKEY **a);
+#endif
+
+OPENSSL_EXPORT X509 *d2i_X509_bio(BIO *bp,X509 **x509);
+OPENSSL_EXPORT int i2d_X509_bio(BIO *bp,X509 *x509);
+OPENSSL_EXPORT X509_CRL *d2i_X509_CRL_bio(BIO *bp,X509_CRL **crl);
+OPENSSL_EXPORT int i2d_X509_CRL_bio(BIO *bp,X509_CRL *crl);
+OPENSSL_EXPORT X509_REQ *d2i_X509_REQ_bio(BIO *bp,X509_REQ **req);
+OPENSSL_EXPORT int i2d_X509_REQ_bio(BIO *bp,X509_REQ *req);
+OPENSSL_EXPORT RSA *d2i_RSAPrivateKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPrivateKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSAPublicKey_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSAPublicKey_bio(BIO *bp,RSA *rsa);
+OPENSSL_EXPORT RSA *d2i_RSA_PUBKEY_bio(BIO *bp,RSA **rsa);
+OPENSSL_EXPORT int i2d_RSA_PUBKEY_bio(BIO *bp,RSA *rsa);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT DSA *d2i_DSA_PUBKEY_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSA_PUBKEY_bio(BIO *bp, DSA *dsa);
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey_bio(BIO *bp, DSA **dsa);
+OPENSSL_EXPORT int i2d_DSAPrivateKey_bio(BIO *bp, DSA *dsa);
+#endif
+OPENSSL_EXPORT EC_KEY *d2i_EC_PUBKEY_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_EC_PUBKEY_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT EC_KEY *d2i_ECPrivateKey_bio(BIO *bp, EC_KEY **eckey);
+OPENSSL_EXPORT int   i2d_ECPrivateKey_bio(BIO *bp, EC_KEY *eckey);
+OPENSSL_EXPORT X509_SIG *d2i_PKCS8_bio(BIO *bp,X509_SIG **p8);
+OPENSSL_EXPORT int i2d_PKCS8_bio(BIO *bp,X509_SIG *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *d2i_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,
+						PKCS8_PRIV_KEY_INFO **p8inf);
+OPENSSL_EXPORT int i2d_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,PKCS8_PRIV_KEY_INFO *p8inf);
+OPENSSL_EXPORT int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key);
+OPENSSL_EXPORT int i2d_PrivateKey_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PrivateKey_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT int i2d_PUBKEY_bio(BIO *bp, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *d2i_PUBKEY_bio(BIO *bp, EVP_PKEY **a);
+OPENSSL_EXPORT DH *d2i_DHparams_bio(BIO *bp, DH **dh);
+OPENSSL_EXPORT int i2d_DHparams_bio(BIO *bp, const DH *dh);
+
+OPENSSL_EXPORT X509 *X509_dup(X509 *x509);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_dup(X509_ATTRIBUTE *xa);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_dup(X509_EXTENSION *ex);
+OPENSSL_EXPORT X509_CRL *X509_CRL_dup(X509_CRL *crl);
+OPENSSL_EXPORT X509_REVOKED *X509_REVOKED_dup(X509_REVOKED *rev);
+OPENSSL_EXPORT X509_REQ *X509_REQ_dup(X509_REQ *req);
+OPENSSL_EXPORT X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *xn);
+OPENSSL_EXPORT int X509_ALGOR_set0(X509_ALGOR *alg, const ASN1_OBJECT *aobj, int ptype, void *pval);
+OPENSSL_EXPORT void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
+                                    const void **ppval,
+                                    const X509_ALGOR *algor);
+OPENSSL_EXPORT void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
+OPENSSL_EXPORT int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
+
+OPENSSL_EXPORT X509_NAME *X509_NAME_dup(X509_NAME *xn);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_dup(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder,
+                                      size_t *pderlen);
+
+OPENSSL_EXPORT int		X509_cmp_time(const ASN1_TIME *s, time_t *t);
+OPENSSL_EXPORT int		X509_cmp_current_time(const ASN1_TIME *s);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj(ASN1_TIME *s, long adj, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_time_adj_ex(ASN1_TIME *s, int offset_day, long offset_sec, time_t *t);
+OPENSSL_EXPORT ASN1_TIME *	X509_gmtime_adj(ASN1_TIME *s, long adj);
+
+OPENSSL_EXPORT const char *	X509_get_default_cert_area(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_dir_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_cert_file_env(void );
+OPENSSL_EXPORT const char *	X509_get_default_private_dir(void );
+
+OPENSSL_EXPORT X509_REQ *	X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
+OPENSSL_EXPORT X509 *		X509_REQ_to_X509(X509_REQ *r, int days,EVP_PKEY *pkey);
+
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_ALGORS, X509_ALGORS, X509_ALGORS)
+DECLARE_ASN1_FUNCTIONS(X509_VAL)
+
+DECLARE_ASN1_FUNCTIONS(X509_PUBKEY)
+
+OPENSSL_EXPORT int		X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_PUBKEY_get(X509_PUBKEY *key);
+OPENSSL_EXPORT int		i2d_PUBKEY(const EVP_PKEY *a,unsigned char **pp);
+OPENSSL_EXPORT EVP_PKEY *	d2i_PUBKEY(EVP_PKEY **a,const unsigned char **pp,
+			long length);
+OPENSSL_EXPORT int		i2d_RSA_PUBKEY(const RSA *a,unsigned char **pp);
+OPENSSL_EXPORT RSA *		d2i_RSA_PUBKEY(RSA **a,const unsigned char **pp,
+			long length);
+#ifndef OPENSSL_NO_DSA
+OPENSSL_EXPORT int		i2d_DSA_PUBKEY(const DSA *a,unsigned char **pp);
+OPENSSL_EXPORT DSA *		d2i_DSA_PUBKEY(DSA **a,const unsigned char **pp,
+			long length);
+#endif
+OPENSSL_EXPORT int		i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp);
+OPENSSL_EXPORT EC_KEY 		*d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp,
+			long length);
+
+DECLARE_ASN1_FUNCTIONS(X509_SIG)
+DECLARE_ASN1_FUNCTIONS(X509_REQ_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_REQ)
+
+DECLARE_ASN1_FUNCTIONS(X509_ATTRIBUTE)
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create(int nid, int atrtype, void *value);
+
+DECLARE_ASN1_FUNCTIONS(X509_EXTENSION)
+DECLARE_ASN1_ENCODE_FUNCTIONS(X509_EXTENSIONS, X509_EXTENSIONS, X509_EXTENSIONS)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+
+DECLARE_ASN1_FUNCTIONS(X509_NAME)
+
+OPENSSL_EXPORT int		X509_NAME_set(X509_NAME **xn, X509_NAME *name);
+
+DECLARE_ASN1_FUNCTIONS(X509_CINF)
+
+DECLARE_ASN1_FUNCTIONS(X509)
+DECLARE_ASN1_FUNCTIONS(X509_CERT_AUX)
+
+/* X509_up_ref adds one to the reference count of |x| and returns one. */
+OPENSSL_EXPORT int X509_up_ref(X509 *x);
+
+OPENSSL_EXPORT int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	     CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int X509_set_ex_data(X509 *r, int idx, void *arg);
+OPENSSL_EXPORT void *X509_get_ex_data(X509 *r, int idx);
+OPENSSL_EXPORT int		i2d_X509_AUX(X509 *a,unsigned char **pp);
+OPENSSL_EXPORT X509 *		d2i_X509_AUX(X509 **a,const unsigned char **pp,long length);
+
+OPENSSL_EXPORT int i2d_re_X509_tbs(X509 *x, unsigned char **pp);
+
+OPENSSL_EXPORT void X509_get0_signature(const ASN1_BIT_STRING **psig,
+                                        const X509_ALGOR **palg, const X509 *x);
+OPENSSL_EXPORT int X509_get_signature_nid(const X509 *x);
+
+OPENSSL_EXPORT int X509_alias_set1(X509 *x, unsigned char *name, int len);
+OPENSSL_EXPORT int X509_keyid_set1(X509 *x, unsigned char *id, int len);
+OPENSSL_EXPORT unsigned char * X509_alias_get0(X509 *x, int *len);
+OPENSSL_EXPORT unsigned char * X509_keyid_get0(X509 *x, int *len);
+OPENSSL_EXPORT int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int);
+OPENSSL_EXPORT int X509_TRUST_set(int *t, int trust);
+OPENSSL_EXPORT int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_add1_reject_object(X509 *x, ASN1_OBJECT *obj);
+OPENSSL_EXPORT void X509_trust_clear(X509 *x);
+OPENSSL_EXPORT void X509_reject_clear(X509 *x);
+
+DECLARE_ASN1_FUNCTIONS(X509_REVOKED)
+DECLARE_ASN1_FUNCTIONS(X509_CRL_INFO)
+DECLARE_ASN1_FUNCTIONS(X509_CRL)
+
+OPENSSL_EXPORT int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
+OPENSSL_EXPORT int X509_CRL_get0_by_serial(X509_CRL *crl,
+		X509_REVOKED **ret, ASN1_INTEGER *serial);
+OPENSSL_EXPORT int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x);
+
+OPENSSL_EXPORT X509_PKEY *	X509_PKEY_new(void );
+OPENSSL_EXPORT void		X509_PKEY_free(X509_PKEY *a);
+
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKI)
+DECLARE_ASN1_FUNCTIONS(NETSCAPE_SPKAC)
+
+#ifndef OPENSSL_NO_EVP
+OPENSSL_EXPORT X509_INFO *	X509_INFO_new(void);
+OPENSSL_EXPORT void		X509_INFO_free(X509_INFO *a);
+OPENSSL_EXPORT char *		X509_NAME_oneline(X509_NAME *a,char *buf,int size);
+
+OPENSSL_EXPORT int ASN1_digest(i2d_of_void *i2d,const EVP_MD *type,char *data,
+		unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_digest(const ASN1_ITEM *it,const EVP_MD *type,void *data,
+	unsigned char *md,unsigned int *len);
+
+OPENSSL_EXPORT int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *algor1,
+	ASN1_BIT_STRING *signature,void *data,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
+	ASN1_BIT_STRING *signature,
+	void *data, EVP_PKEY *pkey, const EVP_MD *type);
+OPENSSL_EXPORT int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+		X509_ALGOR *algor1, X509_ALGOR *algor2,
+	     	ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx);
+#endif
+
+OPENSSL_EXPORT int 		X509_set_version(X509 *x,long version);
+OPENSSL_EXPORT int 		X509_set_serialNumber(X509 *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT ASN1_INTEGER *	X509_get_serialNumber(X509 *x);
+OPENSSL_EXPORT int 		X509_set_issuer_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_issuer_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_subject_name(X509 *x, X509_NAME *name);
+OPENSSL_EXPORT X509_NAME *	X509_get_subject_name(X509 *a);
+OPENSSL_EXPORT int 		X509_set_notBefore(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notBefore(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_notAfter(X509 *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT const ASN1_TIME *X509_get0_notAfter(const X509 *x);
+OPENSSL_EXPORT int 		X509_set_pubkey(X509 *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_get_pubkey(X509 *x);
+OPENSSL_EXPORT ASN1_BIT_STRING * X509_get0_pubkey_bitstr(const X509 *x);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_get0_extensions(const X509 *x);
+OPENSSL_EXPORT const X509_ALGOR *X509_get0_tbs_sigalg(const X509 *x);
+
+OPENSSL_EXPORT int		X509_REQ_set_version(X509_REQ *x,long version);
+OPENSSL_EXPORT int		X509_REQ_set_subject_name(X509_REQ *req,X509_NAME *name);
+OPENSSL_EXPORT void X509_REQ_get0_signature(const X509_REQ *req,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_REQ_get_signature_nid(const X509_REQ *req);
+OPENSSL_EXPORT int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp);
+OPENSSL_EXPORT int		X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey);
+OPENSSL_EXPORT EVP_PKEY *	X509_REQ_get_pubkey(X509_REQ *req);
+OPENSSL_EXPORT int		X509_REQ_extension_nid(int nid);
+OPENSSL_EXPORT const int *	X509_REQ_get_extension_nids(void);
+OPENSSL_EXPORT void		X509_REQ_set_extension_nids(const int *nids);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
+				int nid);
+OPENSSL_EXPORT int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts);
+OPENSSL_EXPORT int X509_REQ_get_attr_count(const X509_REQ *req);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc);
+OPENSSL_EXPORT int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_NID(X509_REQ *req,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_REQ_add1_attr_by_txt(X509_REQ *req,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+
+OPENSSL_EXPORT int X509_CRL_set_version(X509_CRL *x, long version);
+OPENSSL_EXPORT int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name);
+OPENSSL_EXPORT int X509_CRL_set_lastUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_set_nextUpdate(X509_CRL *x, const ASN1_TIME *tm);
+OPENSSL_EXPORT int X509_CRL_sort(X509_CRL *crl);
+OPENSSL_EXPORT int X509_CRL_up_ref(X509_CRL *crl);
+
+OPENSSL_EXPORT void X509_CRL_get0_signature(const X509_CRL *crl,
+                                            const ASN1_BIT_STRING **psig,
+                                            const X509_ALGOR **palg);
+OPENSSL_EXPORT int X509_CRL_get_signature_nid(const X509_CRL *crl);
+OPENSSL_EXPORT int i2d_re_X509_CRL_tbs(X509_CRL *req, unsigned char **pp);
+
+OPENSSL_EXPORT const ASN1_INTEGER *X509_REVOKED_get0_serialNumber(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_serialNumber(X509_REVOKED *x, ASN1_INTEGER *serial);
+OPENSSL_EXPORT const ASN1_TIME *X509_REVOKED_get0_revocationDate(
+    const X509_REVOKED *x);
+OPENSSL_EXPORT int X509_REVOKED_set_revocationDate(X509_REVOKED *r, ASN1_TIME *tm);
+
+OPENSSL_EXPORT X509_CRL *X509_CRL_diff(X509_CRL *base, X509_CRL *newer,
+			EVP_PKEY *skey, const EVP_MD *md, unsigned int flags);
+
+OPENSSL_EXPORT int		X509_REQ_check_private_key(X509_REQ *x509,EVP_PKEY *pkey);
+
+OPENSSL_EXPORT int		X509_check_private_key(X509 *x509, const EVP_PKEY *pkey);
+OPENSSL_EXPORT int 		X509_chain_check_suiteb(int *perror_depth,
+						X509 *x, STACK_OF(X509) *chain,
+						unsigned long flags);
+OPENSSL_EXPORT int 		X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk,
+						unsigned long flags);
+OPENSSL_EXPORT STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain);
+
+OPENSSL_EXPORT int		X509_issuer_and_serial_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_and_serial_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_issuer_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash(X509 *a);
+
+OPENSSL_EXPORT int		X509_subject_name_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash(X509 *x);
+
+OPENSSL_EXPORT unsigned long	X509_issuer_name_hash_old(X509 *a);
+OPENSSL_EXPORT unsigned long	X509_subject_name_hash_old(X509 *x);
+
+OPENSSL_EXPORT int		X509_cmp(const X509 *a, const X509 *b);
+OPENSSL_EXPORT int		X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash(X509_NAME *x);
+OPENSSL_EXPORT unsigned long	X509_NAME_hash_old(X509_NAME *x);
+
+OPENSSL_EXPORT int		X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b);
+OPENSSL_EXPORT int		X509_CRL_match(const X509_CRL *a, const X509_CRL *b);
+#ifndef OPENSSL_NO_FP_API
+OPENSSL_EXPORT int		X509_print_ex_fp(FILE *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print_fp(FILE *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CRL_print_fp(FILE *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_fp(FILE *bp,X509_REQ *req);
+OPENSSL_EXPORT int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags);
+#endif
+
+OPENSSL_EXPORT int		X509_NAME_print(BIO *bp, X509_NAME *name, int obase);
+OPENSSL_EXPORT int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags);
+OPENSSL_EXPORT int		X509_print_ex(BIO *bp,X509 *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_ocspid_print(BIO *bp,X509 *x);
+OPENSSL_EXPORT int		X509_CERT_AUX_print(BIO *bp,X509_CERT_AUX *x, int indent);
+OPENSSL_EXPORT int		X509_CRL_print(BIO *bp,X509_CRL *x);
+OPENSSL_EXPORT int		X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflag, unsigned long cflag);
+OPENSSL_EXPORT int		X509_REQ_print(BIO *bp,X509_REQ *req);
+
+OPENSSL_EXPORT int 		X509_NAME_entry_count(X509_NAME *name);
+OPENSSL_EXPORT int 		X509_NAME_get_text_by_NID(X509_NAME *name, int nid,
+			char *buf,int len);
+OPENSSL_EXPORT int		X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			char *buf,int len);
+
+/* NOTE: you should be passsing -1, not 0 as lastpos.  The functions that use
+ * lastpos, search after that position on. */
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_NID(X509_NAME *name,int nid,int lastpos);
+OPENSSL_EXPORT int 		X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
+			int lastpos);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc);
+OPENSSL_EXPORT int 		X509_NAME_add_entry(X509_NAME *name,X509_NAME_ENTRY *ne,
+			int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
+			unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
+		const char *field, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
+			int type,unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
+			const unsigned char *bytes, int len, int loc, int set);
+OPENSSL_EXPORT X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
+			const ASN1_OBJECT *obj, int type,const unsigned char *bytes,
+			int len);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne,
+			const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int 		X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne);
+OPENSSL_EXPORT ASN1_STRING *	X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne);
+
+OPENSSL_EXPORT int		X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x);
+OPENSSL_EXPORT int		X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x,
+				      int nid, int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *x,
+				      const ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *x,
+					   int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
+					 X509_EXTENSION *ex, int loc);
+
+OPENSSL_EXPORT int		X509_get_ext_count(X509 *x);
+OPENSSL_EXPORT int		X509_get_ext_by_NID(X509 *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_OBJ(X509 *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_get_ext_by_critical(X509 *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_get_ext(X509 *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_delete_ext(X509 *x, int loc);
+OPENSSL_EXPORT int		X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_CRL_get_ext_count(X509_CRL *x);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_OBJ(X509_CRL *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_CRL_get_ext_by_critical(X509_CRL *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc);
+OPENSSL_EXPORT int		X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_count(X509_REVOKED *x);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_OBJ(X509_REVOKED *x,ASN1_OBJECT *obj,int lastpos);
+OPENSSL_EXPORT int		X509_REVOKED_get_ext_by_critical(X509_REVOKED *x, int crit, int lastpos);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc);
+OPENSSL_EXPORT int		X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc);
+OPENSSL_EXPORT void	*	X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int		X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit,
+							unsigned long flags);
+
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex,
+			int nid, int crit, ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
+			const ASN1_OBJECT *obj,int crit,ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT int		X509_EXTENSION_set_object(X509_EXTENSION *ex,const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int		X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit);
+OPENSSL_EXPORT int		X509_EXTENSION_set_data(X509_EXTENSION *ex,
+			ASN1_OCTET_STRING *data);
+OPENSSL_EXPORT ASN1_OBJECT *	X509_EXTENSION_get_object(X509_EXTENSION *ex);
+OPENSSL_EXPORT ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ne);
+OPENSSL_EXPORT int		X509_EXTENSION_get_critical(X509_EXTENSION *ex);
+
+OPENSSL_EXPORT int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x);
+OPENSSL_EXPORT int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
+			  int lastpos);
+OPENSSL_EXPORT int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, const ASN1_OBJECT *obj,
+			  int lastpos);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
+					 X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
+			const ASN1_OBJECT *obj, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
+			int nid, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
+			const char *attrname, int type,
+			const unsigned char *bytes, int len);
+OPENSSL_EXPORT void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
+				ASN1_OBJECT *obj, int lastpos, int type);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
+	     int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
+	     const ASN1_OBJECT *obj, int atrtype, const void *data, int len);
+OPENSSL_EXPORT X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
+		const char *atrname, int type, const unsigned char *bytes, int len);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj);
+OPENSSL_EXPORT int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len);
+OPENSSL_EXPORT void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
+					int atrtype, void *data);
+OPENSSL_EXPORT int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr);
+OPENSSL_EXPORT ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx);
+
+OPENSSL_EXPORT int		X509_verify_cert(X509_STORE_CTX *ctx);
+
+/* lookup a cert from a X509 STACK */
+OPENSSL_EXPORT X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk,X509_NAME *name,
+				     ASN1_INTEGER *serial);
+OPENSSL_EXPORT X509 *X509_find_by_subject(STACK_OF(X509) *sk,X509_NAME *name);
+
+/* PKCS#8 utilities */
+
+DECLARE_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
+
+OPENSSL_EXPORT EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken);
+OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken);
+
+OPENSSL_EXPORT int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
+			int version, int ptype, void *pval,
+				unsigned char *penc, int penclen);
+OPENSSL_EXPORT int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		PKCS8_PRIV_KEY_INFO *p8);
+
+OPENSSL_EXPORT int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+					int ptype, void *pval,
+					unsigned char *penc, int penclen);
+OPENSSL_EXPORT int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+		const unsigned char **pk, int *ppklen,
+		X509_ALGOR **pa,
+		X509_PUBKEY *pub);
+
+OPENSSL_EXPORT int X509_check_trust(X509 *x, int id, int flags);
+OPENSSL_EXPORT int X509_TRUST_get_count(void);
+OPENSSL_EXPORT X509_TRUST * X509_TRUST_get0(int idx);
+OPENSSL_EXPORT int X509_TRUST_get_by_id(int id);
+OPENSSL_EXPORT int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
+					char *name, int arg1, void *arg2);
+OPENSSL_EXPORT void X509_TRUST_cleanup(void);
+OPENSSL_EXPORT int X509_TRUST_get_flags(X509_TRUST *xp);
+OPENSSL_EXPORT char *X509_TRUST_get0_name(X509_TRUST *xp);
+OPENSSL_EXPORT int X509_TRUST_get_trust(X509_TRUST *xp);
+
+
+typedef struct rsa_pss_params_st {
+  X509_ALGOR *hashAlgorithm;
+  X509_ALGOR *maskGenAlgorithm;
+  ASN1_INTEGER *saltLength;
+  ASN1_INTEGER *trailerField;
+} RSA_PSS_PARAMS;
+
+DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
+
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#if !defined(BORINGSSL_NO_CXX)
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(NETSCAPE_SPKI, NETSCAPE_SPKI_free)
+BORINGSSL_MAKE_DELETER(RSA_PSS_PARAMS, RSA_PSS_PARAMS_free)
+BORINGSSL_MAKE_DELETER(X509, X509_free)
+BORINGSSL_MAKE_UP_REF(X509, X509_up_ref)
+BORINGSSL_MAKE_DELETER(X509_ALGOR, X509_ALGOR_free)
+BORINGSSL_MAKE_DELETER(X509_CRL, X509_CRL_free)
+BORINGSSL_MAKE_UP_REF(X509_CRL, X509_CRL_up_ref)
+BORINGSSL_MAKE_DELETER(X509_CRL_METHOD, X509_CRL_METHOD_free)
+BORINGSSL_MAKE_DELETER(X509_EXTENSION, X509_EXTENSION_free)
+BORINGSSL_MAKE_DELETER(X509_INFO, X509_INFO_free)
+BORINGSSL_MAKE_DELETER(X509_LOOKUP, X509_LOOKUP_free)
+BORINGSSL_MAKE_DELETER(X509_NAME, X509_NAME_free)
+BORINGSSL_MAKE_DELETER(X509_NAME_ENTRY, X509_NAME_ENTRY_free)
+BORINGSSL_MAKE_DELETER(X509_PKEY, X509_PKEY_free)
+BORINGSSL_MAKE_DELETER(X509_POLICY_TREE, X509_policy_tree_free)
+BORINGSSL_MAKE_DELETER(X509_PUBKEY, X509_PUBKEY_free)
+BORINGSSL_MAKE_DELETER(X509_REQ, X509_REQ_free)
+BORINGSSL_MAKE_DELETER(X509_REVOKED, X509_REVOKED_free)
+BORINGSSL_MAKE_DELETER(X509_SIG, X509_SIG_free)
+BORINGSSL_MAKE_DELETER(X509_STORE, X509_STORE_free)
+BORINGSSL_MAKE_DELETER(X509_STORE_CTX, X509_STORE_CTX_free)
+BORINGSSL_MAKE_DELETER(X509_VERIFY_PARAM, X509_VERIFY_PARAM_free)
+
+using ScopedX509_STORE_CTX =
+    internal::StackAllocated<X509_STORE_CTX, void, X509_STORE_CTX_zero,
+                             X509_STORE_CTX_cleanup>;
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif  /* !BORINGSSL_NO_CXX */
+
+#define X509_R_AKID_MISMATCH 100
+#define X509_R_BAD_PKCS7_VERSION 101
+#define X509_R_BAD_X509_FILETYPE 102
+#define X509_R_BASE64_DECODE_ERROR 103
+#define X509_R_CANT_CHECK_DH_KEY 104
+#define X509_R_CERT_ALREADY_IN_HASH_TABLE 105
+#define X509_R_CRL_ALREADY_DELTA 106
+#define X509_R_CRL_VERIFY_FAILURE 107
+#define X509_R_IDP_MISMATCH 108
+#define X509_R_INVALID_BIT_STRING_BITS_LEFT 109
+#define X509_R_INVALID_DIRECTORY 110
+#define X509_R_INVALID_FIELD_NAME 111
+#define X509_R_INVALID_PSS_PARAMETERS 112
+#define X509_R_INVALID_TRUST 113
+#define X509_R_ISSUER_MISMATCH 114
+#define X509_R_KEY_TYPE_MISMATCH 115
+#define X509_R_KEY_VALUES_MISMATCH 116
+#define X509_R_LOADING_CERT_DIR 117
+#define X509_R_LOADING_DEFAULTS 118
+#define X509_R_NEWER_CRL_NOT_NEWER 119
+#define X509_R_NOT_PKCS7_SIGNED_DATA 120
+#define X509_R_NO_CERTIFICATES_INCLUDED 121
+#define X509_R_NO_CERT_SET_FOR_US_TO_VERIFY 122
+#define X509_R_NO_CRLS_INCLUDED 123
+#define X509_R_NO_CRL_NUMBER 124
+#define X509_R_PUBLIC_KEY_DECODE_ERROR 125
+#define X509_R_PUBLIC_KEY_ENCODE_ERROR 126
+#define X509_R_SHOULD_RETRY 127
+#define X509_R_UNKNOWN_KEY_TYPE 128
+#define X509_R_UNKNOWN_NID 129
+#define X509_R_UNKNOWN_PURPOSE_ID 130
+#define X509_R_UNKNOWN_TRUST_ID 131
+#define X509_R_UNSUPPORTED_ALGORITHM 132
+#define X509_R_WRONG_LOOKUP_TYPE 133
+#define X509_R_WRONG_TYPE 134
+#define X509_R_NAME_TOO_LONG 135
+#define X509_R_INVALID_PARAMETER 136
+#define X509_R_SIGNATURE_ALGORITHM_MISMATCH 137
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h
new file mode 100644
index 0000000..1ac4dae
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h	
@@ -0,0 +1,680 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_X509_H
+#include <openssl_grpc/x509.h>
+/* openssl/x509.h ends up #include-ing this file at about the only
+ * appropriate moment. */
+#endif
+
+#ifndef HEADER_X509_VFY_H
+#define HEADER_X509_VFY_H
+
+#include <openssl_grpc/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/*******************************/
+/*
+SSL_CTX -> X509_STORE    
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+ 
+SSL	-> X509_STORE_CTX
+		->X509_STORE    
+
+The X509_STORE holds the tables etc for verification stuff.
+A X509_STORE_CTX is used while validating a single certificate.
+The X509_STORE has X509_LOOKUPs for looking up certs.
+The X509_STORE then calls a function to actually verify the
+certificate chain.
+*/
+
+#define X509_LU_X509		1
+#define X509_LU_CRL		2
+#define X509_LU_PKEY		3
+
+typedef struct x509_object_st
+	{
+	/* one of the above types */
+	int type;
+	union	{
+		char *ptr;
+		X509 *x509;
+		X509_CRL *crl;
+		EVP_PKEY *pkey;
+		} data;
+	} X509_OBJECT;
+
+DEFINE_STACK_OF(X509_LOOKUP)
+DEFINE_STACK_OF(X509_OBJECT)
+
+/* This is a static that defines the function interface */
+typedef struct x509_lookup_method_st
+	{
+	const char *name;
+	int (*new_item)(X509_LOOKUP *ctx);
+	void (*free)(X509_LOOKUP *ctx);
+	int (*init)(X509_LOOKUP *ctx);
+	int (*shutdown)(X509_LOOKUP *ctx);
+	int (*ctrl)(X509_LOOKUP *ctx,int cmd,const char *argc,long argl,
+			char **ret);
+	int (*get_by_subject)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+			      X509_OBJECT *ret);
+	int (*get_by_issuer_serial)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+				    ASN1_INTEGER *serial,X509_OBJECT *ret);
+	int (*get_by_fingerprint)(X509_LOOKUP *ctx,int type,
+				  unsigned char *bytes,int len,
+				  X509_OBJECT *ret);
+	int (*get_by_alias)(X509_LOOKUP *ctx,int type,char *str,int len,
+			    X509_OBJECT *ret);
+	} X509_LOOKUP_METHOD;
+
+typedef struct X509_VERIFY_PARAM_ID_st X509_VERIFY_PARAM_ID;
+
+/* This structure hold all parameters associated with a verify operation
+ * by including an X509_VERIFY_PARAM structure in related structures the
+ * parameters used can be customized
+ */
+
+struct X509_VERIFY_PARAM_st
+	{
+	char *name;
+	time_t check_time;	/* Time to use */
+	unsigned long inh_flags; /* Inheritance flags */
+	unsigned long flags;	/* Various verify flags */
+	int purpose;		/* purpose to check untrusted certificates */
+	int trust;		/* trust setting to check */
+	int depth;		/* Verify depth */
+	STACK_OF(ASN1_OBJECT) *policies;	/* Permissible policies */
+	X509_VERIFY_PARAM_ID *id;	/* opaque ID data */
+	};
+
+DEFINE_STACK_OF(X509_VERIFY_PARAM)
+
+typedef int (*X509_STORE_CTX_verify_cb)(int, X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_get_issuer_fn)(X509 **issuer,
+                                            X509_STORE_CTX *ctx, X509 *x);
+typedef int (*X509_STORE_CTX_check_issued_fn)(X509_STORE_CTX *ctx,
+                                              X509 *x, X509 *issuer);
+typedef int (*X509_STORE_CTX_check_revocation_fn)(X509_STORE_CTX *ctx);
+typedef int (*X509_STORE_CTX_get_crl_fn)(X509_STORE_CTX *ctx,
+                                         X509_CRL **crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl);
+typedef int (*X509_STORE_CTX_cert_crl_fn)(X509_STORE_CTX *ctx,
+                                          X509_CRL *crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_policy_fn)(X509_STORE_CTX *ctx);
+typedef STACK_OF(X509) *(*X509_STORE_CTX_lookup_certs_fn)(X509_STORE_CTX *ctx,
+                                                          X509_NAME *nm);
+typedef STACK_OF(X509_CRL) *(*X509_STORE_CTX_lookup_crls_fn)(X509_STORE_CTX *ctx,
+                                                             X509_NAME *nm);
+typedef int (*X509_STORE_CTX_cleanup_fn)(X509_STORE_CTX *ctx);
+
+/* This is used to hold everything.  It is used for all certificate
+ * validation.  Once we have a certificate chain, the 'verify'
+ * function is then called to actually check the cert chain. */
+struct x509_store_st
+	{
+	/* The following is a cache of trusted certs */
+	int cache; 	/* if true, stash any hits */
+	STACK_OF(X509_OBJECT) *objs;	/* Cache of all objects */
+	CRYPTO_MUTEX objs_lock;
+	STACK_OF(X509) *additional_untrusted;
+
+	/* These are external lookup methods */
+	STACK_OF(X509_LOOKUP) *get_cert_methods;
+
+	X509_VERIFY_PARAM *param;
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;	/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	CRYPTO_refcount_t references;
+	} /* X509_STORE */;
+
+OPENSSL_EXPORT int X509_STORE_set_depth(X509_STORE *store, int depth);
+
+/* This is the functions plus an instance of the local variables. */
+struct x509_lookup_st
+	{
+	int init;			/* have we been started */
+	int skip;			/* don't use us. */
+	X509_LOOKUP_METHOD *method;	/* the functions */
+	char *method_data;		/* method data */
+
+	X509_STORE *store_ctx;	/* who owns us */
+	} /* X509_LOOKUP */;
+
+/* This is a used when verifying cert chains.  Since the
+ * gathering of the cert chain can take some time (and have to be
+ * 'retried', this needs to be kept and passed around. */
+struct x509_store_ctx_st      /* X509_STORE_CTX */
+	{
+	X509_STORE *ctx;
+
+	/* The following are set by the caller */
+	X509 *cert;		/* The cert to check */
+	STACK_OF(X509) *untrusted;	/* chain of X509s - untrusted - passed in */
+	STACK_OF(X509_CRL) *crls;	/* set of CRLs passed in */
+
+	X509_VERIFY_PARAM *param;
+	void *other_ctx;	/* Other info for use with get_issuer() */
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;		/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_check_policy_fn check_policy;
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	/* The following is built up */
+	int valid;		/* if 0, rebuild chain */
+	int last_untrusted;	/* index of last untrusted cert */
+	STACK_OF(X509) *chain; 		/* chain of X509s - built up and trusted */
+	X509_POLICY_TREE *tree;	/* Valid policy tree */
+
+	int explicit_policy;	/* Require explicit policy value */
+
+	/* When something goes wrong, this is why */
+	int error_depth;
+	int error;
+	X509 *current_cert;
+	X509 *current_issuer;	/* cert currently being tested as valid issuer */
+	X509_CRL *current_crl;	/* current CRL */
+
+	int current_crl_score;  /* score of current CRL */
+	unsigned int current_reasons;  /* Reason mask */
+
+	X509_STORE_CTX *parent; /* For CRL path validation: parent context */
+
+	CRYPTO_EX_DATA ex_data;
+	} /* X509_STORE_CTX */;
+
+OPENSSL_EXPORT void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);
+
+#define X509_STORE_CTX_set_app_data(ctx,data) \
+	X509_STORE_CTX_set_ex_data(ctx,0,data)
+#define X509_STORE_CTX_get_app_data(ctx) \
+	X509_STORE_CTX_get_ex_data(ctx,0)
+
+#define X509_L_FILE_LOAD	1
+#define X509_L_ADD_DIR		2
+
+#define X509_LOOKUP_load_file(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
+
+#define X509_LOOKUP_add_dir(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
+
+#define		X509_V_OK					0
+#define		X509_V_ERR_UNSPECIFIED				1
+
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT		2
+#define		X509_V_ERR_UNABLE_TO_GET_CRL			3
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE	4
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE	5
+#define		X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY	6
+#define		X509_V_ERR_CERT_SIGNATURE_FAILURE		7
+#define		X509_V_ERR_CRL_SIGNATURE_FAILURE		8
+#define		X509_V_ERR_CERT_NOT_YET_VALID			9
+#define		X509_V_ERR_CERT_HAS_EXPIRED			10
+#define		X509_V_ERR_CRL_NOT_YET_VALID			11
+#define		X509_V_ERR_CRL_HAS_EXPIRED			12
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD	13
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD	14
+#define		X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD	15
+#define		X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD	16
+#define		X509_V_ERR_OUT_OF_MEM				17
+#define		X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT		18
+#define		X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN		19
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY	20
+#define		X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE	21
+#define		X509_V_ERR_CERT_CHAIN_TOO_LONG			22
+#define		X509_V_ERR_CERT_REVOKED				23
+#define		X509_V_ERR_INVALID_CA				24
+#define		X509_V_ERR_PATH_LENGTH_EXCEEDED			25
+#define		X509_V_ERR_INVALID_PURPOSE			26
+#define		X509_V_ERR_CERT_UNTRUSTED			27
+#define		X509_V_ERR_CERT_REJECTED			28
+/* These are 'informational' when looking for issuer cert */
+#define		X509_V_ERR_SUBJECT_ISSUER_MISMATCH		29
+#define		X509_V_ERR_AKID_SKID_MISMATCH			30
+#define		X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH		31
+#define		X509_V_ERR_KEYUSAGE_NO_CERTSIGN			32
+
+#define		X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER		33
+#define		X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION		34
+#define		X509_V_ERR_KEYUSAGE_NO_CRL_SIGN			35
+#define		X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION	36
+#define		X509_V_ERR_INVALID_NON_CA			37
+#define		X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED		38
+#define		X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE	39
+#define		X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED	40
+
+#define		X509_V_ERR_INVALID_EXTENSION			41
+#define		X509_V_ERR_INVALID_POLICY_EXTENSION		42
+#define		X509_V_ERR_NO_EXPLICIT_POLICY			43
+#define		X509_V_ERR_DIFFERENT_CRL_SCOPE			44
+#define		X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE	45
+
+#define		X509_V_ERR_UNNESTED_RESOURCE			46
+
+#define		X509_V_ERR_PERMITTED_VIOLATION			47
+#define		X509_V_ERR_EXCLUDED_VIOLATION			48
+#define		X509_V_ERR_SUBTREE_MINMAX			49
+#define		X509_V_ERR_APPLICATION_VERIFICATION		50
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE		51
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX	52
+#define		X509_V_ERR_UNSUPPORTED_NAME_SYNTAX		53
+#define		X509_V_ERR_CRL_PATH_VALIDATION_ERROR		54
+
+/* Suite B mode algorithm violation */
+#define		X509_V_ERR_SUITE_B_INVALID_VERSION		56
+#define		X509_V_ERR_SUITE_B_INVALID_ALGORITHM		57
+#define		X509_V_ERR_SUITE_B_INVALID_CURVE		58
+#define		X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM	59
+#define		X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED		60
+#define		X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256	61
+
+/* Host, email and IP check errors */
+#define		X509_V_ERR_HOSTNAME_MISMATCH			62
+#define		X509_V_ERR_EMAIL_MISMATCH			63
+#define		X509_V_ERR_IP_ADDRESS_MISMATCH			64
+
+/* Caller error */
+#define		X509_V_ERR_INVALID_CALL				65
+/* Issuer lookup error */
+#define		X509_V_ERR_STORE_LOOKUP				66
+
+#define		X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS	67
+
+/* Certificate verify flags */
+
+/* Send issuer+subject checks to verify_cb */
+#define	X509_V_FLAG_CB_ISSUER_CHECK		0x1
+/* Use check time instead of current time */
+#define	X509_V_FLAG_USE_CHECK_TIME		0x2
+/* Lookup CRLs */
+#define	X509_V_FLAG_CRL_CHECK			0x4
+/* Lookup CRLs for whole chain */
+#define	X509_V_FLAG_CRL_CHECK_ALL		0x8
+/* Ignore unhandled critical extensions */
+#define	X509_V_FLAG_IGNORE_CRITICAL		0x10
+/* Does nothing as its functionality has been enabled by default. */
+#define	X509_V_FLAG_X509_STRICT			0x00
+/* Enable proxy certificate validation */
+#define	X509_V_FLAG_ALLOW_PROXY_CERTS		0x40
+/* Enable policy checking */
+#define X509_V_FLAG_POLICY_CHECK		0x80
+/* Policy variable require-explicit-policy */
+#define X509_V_FLAG_EXPLICIT_POLICY		0x100
+/* Policy variable inhibit-any-policy */
+#define	X509_V_FLAG_INHIBIT_ANY			0x200
+/* Policy variable inhibit-policy-mapping */
+#define X509_V_FLAG_INHIBIT_MAP			0x400
+/* Notify callback that policy is OK */
+#define X509_V_FLAG_NOTIFY_POLICY		0x800
+/* Extended CRL features such as indirect CRLs, alternate CRL signing keys */
+#define X509_V_FLAG_EXTENDED_CRL_SUPPORT	0x1000
+/* Delta CRL support */
+#define X509_V_FLAG_USE_DELTAS			0x2000
+/* Check selfsigned CA signature */
+#define X509_V_FLAG_CHECK_SS_SIGNATURE		0x4000
+/* Use trusted store first */
+#define X509_V_FLAG_TRUSTED_FIRST		0x8000
+/* Suite B 128 bit only mode: not normally used */
+#define X509_V_FLAG_SUITEB_128_LOS_ONLY		0x10000
+/* Suite B 192 bit only mode */
+#define X509_V_FLAG_SUITEB_192_LOS		0x20000
+/* Suite B 128 bit mode allowing 192 bit algorithms */
+#define X509_V_FLAG_SUITEB_128_LOS		0x30000
+
+/* Allow partial chains if at least one certificate is in trusted store */
+#define X509_V_FLAG_PARTIAL_CHAIN		0x80000
+
+/* If the initial chain is not trusted, do not attempt to build an alternative
+ * chain. Alternate chain checking was introduced in 1.0.2b. Setting this flag
+ * will force the behaviour to match that of previous versions. */
+#define X509_V_FLAG_NO_ALT_CHAINS		0x100000
+
+#define X509_VP_FLAG_DEFAULT			0x1
+#define X509_VP_FLAG_OVERWRITE			0x2
+#define X509_VP_FLAG_RESET_FLAGS		0x4
+#define X509_VP_FLAG_LOCKED			0x8
+#define X509_VP_FLAG_ONCE			0x10
+
+/* Internal use: mask of policy related options */
+#define X509_V_FLAG_POLICY_MASK (X509_V_FLAG_POLICY_CHECK \
+				| X509_V_FLAG_EXPLICIT_POLICY \
+				| X509_V_FLAG_INHIBIT_ANY \
+				| X509_V_FLAG_INHIBIT_MAP)
+
+OPENSSL_EXPORT int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
+	     X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,int type,X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x);
+OPENSSL_EXPORT int X509_OBJECT_up_ref_count(X509_OBJECT *a);
+OPENSSL_EXPORT void X509_OBJECT_free_contents(X509_OBJECT *a);
+OPENSSL_EXPORT int X509_OBJECT_get_type(const X509_OBJECT *a);
+OPENSSL_EXPORT X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a);
+OPENSSL_EXPORT X509_STORE *X509_STORE_new(void );
+OPENSSL_EXPORT int X509_STORE_up_ref(X509_STORE *store);
+OPENSSL_EXPORT void X509_STORE_free(X509_STORE *v);
+
+OPENSSL_EXPORT STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st);
+OPENSSL_EXPORT STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
+OPENSSL_EXPORT int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_set_trust(X509_STORE *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *pm);
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);
+/* X509_STORE_set0_additional_untrusted sets a stack of additional, untrusted
+ * certificates that are available for chain building. This function does not
+ * take ownership of the stack. */
+OPENSSL_EXPORT void X509_STORE_set0_additional_untrusted(
+    X509_STORE *ctx, STACK_OF(X509) *untrusted);
+
+OPENSSL_EXPORT void X509_STORE_set_verify(X509_STORE *ctx,
+                                          X509_STORE_CTX_verify_fn verify);
+#define X509_STORE_set_verify_func(ctx, func) \
+  X509_STORE_set_verify((ctx), (func))
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx,
+                                              X509_STORE_CTX_verify_fn verify);
+OPENSSL_EXPORT X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_verify_cb(
+    X509_STORE *ctx, X509_STORE_CTX_verify_cb verify_cb);
+#define X509_STORE_set_verify_cb_func(ctx, func) \
+  X509_STORE_set_verify_cb((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_verify_cb
+X509_STORE_get_verify_cb(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_issuer(
+    X509_STORE *ctx, X509_STORE_CTX_get_issuer_fn get_issuer);
+OPENSSL_EXPORT X509_STORE_CTX_get_issuer_fn
+X509_STORE_get_get_issuer(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_issued(
+    X509_STORE *ctx, X509_STORE_CTX_check_issued_fn check_issued);
+OPENSSL_EXPORT X509_STORE_CTX_check_issued_fn
+X509_STORE_get_check_issued(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_revocation(
+    X509_STORE *ctx, X509_STORE_CTX_check_revocation_fn check_revocation);
+OPENSSL_EXPORT X509_STORE_CTX_check_revocation_fn
+X509_STORE_get_check_revocation(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_crl(X509_STORE *ctx,
+                                           X509_STORE_CTX_get_crl_fn get_crl);
+OPENSSL_EXPORT X509_STORE_CTX_get_crl_fn
+X509_STORE_get_get_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_crl(
+    X509_STORE *ctx, X509_STORE_CTX_check_crl_fn check_crl);
+OPENSSL_EXPORT X509_STORE_CTX_check_crl_fn
+X509_STORE_get_check_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cert_crl(
+    X509_STORE *ctx, X509_STORE_CTX_cert_crl_fn cert_crl);
+OPENSSL_EXPORT X509_STORE_CTX_cert_crl_fn
+X509_STORE_get_cert_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_certs(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_certs_fn lookup_certs);
+OPENSSL_EXPORT X509_STORE_CTX_lookup_certs_fn
+X509_STORE_get_lookup_certs(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_crls(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_crls_fn lookup_crls);
+#define X509_STORE_set_lookup_crls_cb(ctx, func) \
+  X509_STORE_set_lookup_crls((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_lookup_crls_fn
+X509_STORE_get_lookup_crls(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cleanup(X509_STORE *ctx,
+                                           X509_STORE_CTX_cleanup_fn cleanup);
+OPENSSL_EXPORT X509_STORE_CTX_cleanup_fn
+X509_STORE_get_cleanup(X509_STORE *ctx);
+
+
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_new(void);
+
+OPENSSL_EXPORT int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
+
+OPENSSL_EXPORT void X509_STORE_CTX_zero(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
+			 X509 *x509, STACK_OF(X509) *chain);
+OPENSSL_EXPORT void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
+OPENSSL_EXPORT void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
+
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
+
+OPENSSL_EXPORT int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
+OPENSSL_EXPORT int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
+
+OPENSSL_EXPORT int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
+	X509_OBJECT *ret);
+
+OPENSSL_EXPORT int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+	long argl, char **ret);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+#endif
+
+
+OPENSSL_EXPORT X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
+OPENSSL_EXPORT void X509_LOOKUP_free(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_init(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	ASN1_INTEGER *serial, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+	unsigned char *bytes, int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
+	int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int	X509_STORE_load_locations (X509_STORE *ctx,
+		const char *file, const char *dir);
+OPENSSL_EXPORT int	X509_STORE_set_default_paths(X509_STORE *ctx);
+#endif
+
+OPENSSL_EXPORT int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int	X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
+OPENSSL_EXPORT void *	X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *	X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
+OPENSSL_EXPORT STACK_OF(X509) *
+    X509_STORE_CTX_get0_untrusted(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set0_crls(X509_STORE_CTX *c,STACK_OF(X509_CRL) *sk);
+OPENSSL_EXPORT int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+				int purpose, int trust);
+OPENSSL_EXPORT void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags);
+OPENSSL_EXPORT void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
+								time_t t);
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+				  int (*verify_cb)(int, X509_STORE_CTX *));
+  
+OPENSSL_EXPORT X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);
+
+/* X509_VERIFY_PARAM functions */
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to, 
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+							unsigned long flags);
+OPENSSL_EXPORT unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+						ASN1_OBJECT *policy);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param, 
+					STACK_OF(ASN1_OBJECT) *policies);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+				const char *name, size_t namelen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+					       const char *name,
+					       size_t namelen);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+					unsigned int flags);
+OPENSSL_EXPORT char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+				const char *email, size_t emaillen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+					const unsigned char *ip, size_t iplen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_count(void);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_table_cleanup(void);
+
+OPENSSL_EXPORT int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
+			STACK_OF(X509) *certs,
+			STACK_OF(ASN1_OBJECT) *policy_oids,
+			unsigned int flags);
+
+OPENSSL_EXPORT void X509_policy_tree_free(X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
+OPENSSL_EXPORT X509_POLICY_LEVEL *
+	X509_policy_tree_get0_level(const X509_POLICY_TREE *tree, int i);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_user_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_level_node_count(X509_POLICY_LEVEL *level);
+
+OPENSSL_EXPORT X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level, int i);
+
+OPENSSL_EXPORT const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node);
+
+OPENSSL_EXPORT STACK_OF(POLICYQUALINFO) *
+	X509_policy_node_get0_qualifiers(const X509_POLICY_NODE *node);
+OPENSSL_EXPORT const X509_POLICY_NODE *
+	X509_policy_node_get0_parent(const X509_POLICY_NODE *node);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.back
new file mode 100644
index 0000000..f262334
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.back	
@@ -0,0 +1,680 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_X509_H
+#include <openssl/x509.h>
+/* openssl/x509.h ends up #include-ing this file at about the only
+ * appropriate moment. */
+#endif
+
+#ifndef HEADER_X509_VFY_H
+#define HEADER_X509_VFY_H
+
+#include <openssl/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/*******************************/
+/*
+SSL_CTX -> X509_STORE    
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+ 
+SSL	-> X509_STORE_CTX
+		->X509_STORE    
+
+The X509_STORE holds the tables etc for verification stuff.
+A X509_STORE_CTX is used while validating a single certificate.
+The X509_STORE has X509_LOOKUPs for looking up certs.
+The X509_STORE then calls a function to actually verify the
+certificate chain.
+*/
+
+#define X509_LU_X509		1
+#define X509_LU_CRL		2
+#define X509_LU_PKEY		3
+
+typedef struct x509_object_st
+	{
+	/* one of the above types */
+	int type;
+	union	{
+		char *ptr;
+		X509 *x509;
+		X509_CRL *crl;
+		EVP_PKEY *pkey;
+		} data;
+	} X509_OBJECT;
+
+DEFINE_STACK_OF(X509_LOOKUP)
+DEFINE_STACK_OF(X509_OBJECT)
+
+/* This is a static that defines the function interface */
+typedef struct x509_lookup_method_st
+	{
+	const char *name;
+	int (*new_item)(X509_LOOKUP *ctx);
+	void (*free)(X509_LOOKUP *ctx);
+	int (*init)(X509_LOOKUP *ctx);
+	int (*shutdown)(X509_LOOKUP *ctx);
+	int (*ctrl)(X509_LOOKUP *ctx,int cmd,const char *argc,long argl,
+			char **ret);
+	int (*get_by_subject)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+			      X509_OBJECT *ret);
+	int (*get_by_issuer_serial)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+				    ASN1_INTEGER *serial,X509_OBJECT *ret);
+	int (*get_by_fingerprint)(X509_LOOKUP *ctx,int type,
+				  unsigned char *bytes,int len,
+				  X509_OBJECT *ret);
+	int (*get_by_alias)(X509_LOOKUP *ctx,int type,char *str,int len,
+			    X509_OBJECT *ret);
+	} X509_LOOKUP_METHOD;
+
+typedef struct X509_VERIFY_PARAM_ID_st X509_VERIFY_PARAM_ID;
+
+/* This structure hold all parameters associated with a verify operation
+ * by including an X509_VERIFY_PARAM structure in related structures the
+ * parameters used can be customized
+ */
+
+struct X509_VERIFY_PARAM_st
+	{
+	char *name;
+	time_t check_time;	/* Time to use */
+	unsigned long inh_flags; /* Inheritance flags */
+	unsigned long flags;	/* Various verify flags */
+	int purpose;		/* purpose to check untrusted certificates */
+	int trust;		/* trust setting to check */
+	int depth;		/* Verify depth */
+	STACK_OF(ASN1_OBJECT) *policies;	/* Permissible policies */
+	X509_VERIFY_PARAM_ID *id;	/* opaque ID data */
+	};
+
+DEFINE_STACK_OF(X509_VERIFY_PARAM)
+
+typedef int (*X509_STORE_CTX_verify_cb)(int, X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_get_issuer_fn)(X509 **issuer,
+                                            X509_STORE_CTX *ctx, X509 *x);
+typedef int (*X509_STORE_CTX_check_issued_fn)(X509_STORE_CTX *ctx,
+                                              X509 *x, X509 *issuer);
+typedef int (*X509_STORE_CTX_check_revocation_fn)(X509_STORE_CTX *ctx);
+typedef int (*X509_STORE_CTX_get_crl_fn)(X509_STORE_CTX *ctx,
+                                         X509_CRL **crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl);
+typedef int (*X509_STORE_CTX_cert_crl_fn)(X509_STORE_CTX *ctx,
+                                          X509_CRL *crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_policy_fn)(X509_STORE_CTX *ctx);
+typedef STACK_OF(X509) *(*X509_STORE_CTX_lookup_certs_fn)(X509_STORE_CTX *ctx,
+                                                          X509_NAME *nm);
+typedef STACK_OF(X509_CRL) *(*X509_STORE_CTX_lookup_crls_fn)(X509_STORE_CTX *ctx,
+                                                             X509_NAME *nm);
+typedef int (*X509_STORE_CTX_cleanup_fn)(X509_STORE_CTX *ctx);
+
+/* This is used to hold everything.  It is used for all certificate
+ * validation.  Once we have a certificate chain, the 'verify'
+ * function is then called to actually check the cert chain. */
+struct x509_store_st
+	{
+	/* The following is a cache of trusted certs */
+	int cache; 	/* if true, stash any hits */
+	STACK_OF(X509_OBJECT) *objs;	/* Cache of all objects */
+	CRYPTO_MUTEX objs_lock;
+	STACK_OF(X509) *additional_untrusted;
+
+	/* These are external lookup methods */
+	STACK_OF(X509_LOOKUP) *get_cert_methods;
+
+	X509_VERIFY_PARAM *param;
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;	/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	CRYPTO_refcount_t references;
+	} /* X509_STORE */;
+
+OPENSSL_EXPORT int X509_STORE_set_depth(X509_STORE *store, int depth);
+
+/* This is the functions plus an instance of the local variables. */
+struct x509_lookup_st
+	{
+	int init;			/* have we been started */
+	int skip;			/* don't use us. */
+	X509_LOOKUP_METHOD *method;	/* the functions */
+	char *method_data;		/* method data */
+
+	X509_STORE *store_ctx;	/* who owns us */
+	} /* X509_LOOKUP */;
+
+/* This is a used when verifying cert chains.  Since the
+ * gathering of the cert chain can take some time (and have to be
+ * 'retried', this needs to be kept and passed around. */
+struct x509_store_ctx_st      /* X509_STORE_CTX */
+	{
+	X509_STORE *ctx;
+
+	/* The following are set by the caller */
+	X509 *cert;		/* The cert to check */
+	STACK_OF(X509) *untrusted;	/* chain of X509s - untrusted - passed in */
+	STACK_OF(X509_CRL) *crls;	/* set of CRLs passed in */
+
+	X509_VERIFY_PARAM *param;
+	void *other_ctx;	/* Other info for use with get_issuer() */
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;		/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_check_policy_fn check_policy;
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	/* The following is built up */
+	int valid;		/* if 0, rebuild chain */
+	int last_untrusted;	/* index of last untrusted cert */
+	STACK_OF(X509) *chain; 		/* chain of X509s - built up and trusted */
+	X509_POLICY_TREE *tree;	/* Valid policy tree */
+
+	int explicit_policy;	/* Require explicit policy value */
+
+	/* When something goes wrong, this is why */
+	int error_depth;
+	int error;
+	X509 *current_cert;
+	X509 *current_issuer;	/* cert currently being tested as valid issuer */
+	X509_CRL *current_crl;	/* current CRL */
+
+	int current_crl_score;  /* score of current CRL */
+	unsigned int current_reasons;  /* Reason mask */
+
+	X509_STORE_CTX *parent; /* For CRL path validation: parent context */
+
+	CRYPTO_EX_DATA ex_data;
+	} /* X509_STORE_CTX */;
+
+OPENSSL_EXPORT void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);
+
+#define X509_STORE_CTX_set_app_data(ctx,data) \
+	X509_STORE_CTX_set_ex_data(ctx,0,data)
+#define X509_STORE_CTX_get_app_data(ctx) \
+	X509_STORE_CTX_get_ex_data(ctx,0)
+
+#define X509_L_FILE_LOAD	1
+#define X509_L_ADD_DIR		2
+
+#define X509_LOOKUP_load_file(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
+
+#define X509_LOOKUP_add_dir(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
+
+#define		X509_V_OK					0
+#define		X509_V_ERR_UNSPECIFIED				1
+
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT		2
+#define		X509_V_ERR_UNABLE_TO_GET_CRL			3
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE	4
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE	5
+#define		X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY	6
+#define		X509_V_ERR_CERT_SIGNATURE_FAILURE		7
+#define		X509_V_ERR_CRL_SIGNATURE_FAILURE		8
+#define		X509_V_ERR_CERT_NOT_YET_VALID			9
+#define		X509_V_ERR_CERT_HAS_EXPIRED			10
+#define		X509_V_ERR_CRL_NOT_YET_VALID			11
+#define		X509_V_ERR_CRL_HAS_EXPIRED			12
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD	13
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD	14
+#define		X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD	15
+#define		X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD	16
+#define		X509_V_ERR_OUT_OF_MEM				17
+#define		X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT		18
+#define		X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN		19
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY	20
+#define		X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE	21
+#define		X509_V_ERR_CERT_CHAIN_TOO_LONG			22
+#define		X509_V_ERR_CERT_REVOKED				23
+#define		X509_V_ERR_INVALID_CA				24
+#define		X509_V_ERR_PATH_LENGTH_EXCEEDED			25
+#define		X509_V_ERR_INVALID_PURPOSE			26
+#define		X509_V_ERR_CERT_UNTRUSTED			27
+#define		X509_V_ERR_CERT_REJECTED			28
+/* These are 'informational' when looking for issuer cert */
+#define		X509_V_ERR_SUBJECT_ISSUER_MISMATCH		29
+#define		X509_V_ERR_AKID_SKID_MISMATCH			30
+#define		X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH		31
+#define		X509_V_ERR_KEYUSAGE_NO_CERTSIGN			32
+
+#define		X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER		33
+#define		X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION		34
+#define		X509_V_ERR_KEYUSAGE_NO_CRL_SIGN			35
+#define		X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION	36
+#define		X509_V_ERR_INVALID_NON_CA			37
+#define		X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED		38
+#define		X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE	39
+#define		X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED	40
+
+#define		X509_V_ERR_INVALID_EXTENSION			41
+#define		X509_V_ERR_INVALID_POLICY_EXTENSION		42
+#define		X509_V_ERR_NO_EXPLICIT_POLICY			43
+#define		X509_V_ERR_DIFFERENT_CRL_SCOPE			44
+#define		X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE	45
+
+#define		X509_V_ERR_UNNESTED_RESOURCE			46
+
+#define		X509_V_ERR_PERMITTED_VIOLATION			47
+#define		X509_V_ERR_EXCLUDED_VIOLATION			48
+#define		X509_V_ERR_SUBTREE_MINMAX			49
+#define		X509_V_ERR_APPLICATION_VERIFICATION		50
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE		51
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX	52
+#define		X509_V_ERR_UNSUPPORTED_NAME_SYNTAX		53
+#define		X509_V_ERR_CRL_PATH_VALIDATION_ERROR		54
+
+/* Suite B mode algorithm violation */
+#define		X509_V_ERR_SUITE_B_INVALID_VERSION		56
+#define		X509_V_ERR_SUITE_B_INVALID_ALGORITHM		57
+#define		X509_V_ERR_SUITE_B_INVALID_CURVE		58
+#define		X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM	59
+#define		X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED		60
+#define		X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256	61
+
+/* Host, email and IP check errors */
+#define		X509_V_ERR_HOSTNAME_MISMATCH			62
+#define		X509_V_ERR_EMAIL_MISMATCH			63
+#define		X509_V_ERR_IP_ADDRESS_MISMATCH			64
+
+/* Caller error */
+#define		X509_V_ERR_INVALID_CALL				65
+/* Issuer lookup error */
+#define		X509_V_ERR_STORE_LOOKUP				66
+
+#define		X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS	67
+
+/* Certificate verify flags */
+
+/* Send issuer+subject checks to verify_cb */
+#define	X509_V_FLAG_CB_ISSUER_CHECK		0x1
+/* Use check time instead of current time */
+#define	X509_V_FLAG_USE_CHECK_TIME		0x2
+/* Lookup CRLs */
+#define	X509_V_FLAG_CRL_CHECK			0x4
+/* Lookup CRLs for whole chain */
+#define	X509_V_FLAG_CRL_CHECK_ALL		0x8
+/* Ignore unhandled critical extensions */
+#define	X509_V_FLAG_IGNORE_CRITICAL		0x10
+/* Does nothing as its functionality has been enabled by default. */
+#define	X509_V_FLAG_X509_STRICT			0x00
+/* Enable proxy certificate validation */
+#define	X509_V_FLAG_ALLOW_PROXY_CERTS		0x40
+/* Enable policy checking */
+#define X509_V_FLAG_POLICY_CHECK		0x80
+/* Policy variable require-explicit-policy */
+#define X509_V_FLAG_EXPLICIT_POLICY		0x100
+/* Policy variable inhibit-any-policy */
+#define	X509_V_FLAG_INHIBIT_ANY			0x200
+/* Policy variable inhibit-policy-mapping */
+#define X509_V_FLAG_INHIBIT_MAP			0x400
+/* Notify callback that policy is OK */
+#define X509_V_FLAG_NOTIFY_POLICY		0x800
+/* Extended CRL features such as indirect CRLs, alternate CRL signing keys */
+#define X509_V_FLAG_EXTENDED_CRL_SUPPORT	0x1000
+/* Delta CRL support */
+#define X509_V_FLAG_USE_DELTAS			0x2000
+/* Check selfsigned CA signature */
+#define X509_V_FLAG_CHECK_SS_SIGNATURE		0x4000
+/* Use trusted store first */
+#define X509_V_FLAG_TRUSTED_FIRST		0x8000
+/* Suite B 128 bit only mode: not normally used */
+#define X509_V_FLAG_SUITEB_128_LOS_ONLY		0x10000
+/* Suite B 192 bit only mode */
+#define X509_V_FLAG_SUITEB_192_LOS		0x20000
+/* Suite B 128 bit mode allowing 192 bit algorithms */
+#define X509_V_FLAG_SUITEB_128_LOS		0x30000
+
+/* Allow partial chains if at least one certificate is in trusted store */
+#define X509_V_FLAG_PARTIAL_CHAIN		0x80000
+
+/* If the initial chain is not trusted, do not attempt to build an alternative
+ * chain. Alternate chain checking was introduced in 1.0.2b. Setting this flag
+ * will force the behaviour to match that of previous versions. */
+#define X509_V_FLAG_NO_ALT_CHAINS		0x100000
+
+#define X509_VP_FLAG_DEFAULT			0x1
+#define X509_VP_FLAG_OVERWRITE			0x2
+#define X509_VP_FLAG_RESET_FLAGS		0x4
+#define X509_VP_FLAG_LOCKED			0x8
+#define X509_VP_FLAG_ONCE			0x10
+
+/* Internal use: mask of policy related options */
+#define X509_V_FLAG_POLICY_MASK (X509_V_FLAG_POLICY_CHECK \
+				| X509_V_FLAG_EXPLICIT_POLICY \
+				| X509_V_FLAG_INHIBIT_ANY \
+				| X509_V_FLAG_INHIBIT_MAP)
+
+OPENSSL_EXPORT int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
+	     X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,int type,X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x);
+OPENSSL_EXPORT int X509_OBJECT_up_ref_count(X509_OBJECT *a);
+OPENSSL_EXPORT void X509_OBJECT_free_contents(X509_OBJECT *a);
+OPENSSL_EXPORT int X509_OBJECT_get_type(const X509_OBJECT *a);
+OPENSSL_EXPORT X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a);
+OPENSSL_EXPORT X509_STORE *X509_STORE_new(void );
+OPENSSL_EXPORT int X509_STORE_up_ref(X509_STORE *store);
+OPENSSL_EXPORT void X509_STORE_free(X509_STORE *v);
+
+OPENSSL_EXPORT STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st);
+OPENSSL_EXPORT STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
+OPENSSL_EXPORT int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_set_trust(X509_STORE *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *pm);
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);
+/* X509_STORE_set0_additional_untrusted sets a stack of additional, untrusted
+ * certificates that are available for chain building. This function does not
+ * take ownership of the stack. */
+OPENSSL_EXPORT void X509_STORE_set0_additional_untrusted(
+    X509_STORE *ctx, STACK_OF(X509) *untrusted);
+
+OPENSSL_EXPORT void X509_STORE_set_verify(X509_STORE *ctx,
+                                          X509_STORE_CTX_verify_fn verify);
+#define X509_STORE_set_verify_func(ctx, func) \
+  X509_STORE_set_verify((ctx), (func))
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx,
+                                              X509_STORE_CTX_verify_fn verify);
+OPENSSL_EXPORT X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_verify_cb(
+    X509_STORE *ctx, X509_STORE_CTX_verify_cb verify_cb);
+#define X509_STORE_set_verify_cb_func(ctx, func) \
+  X509_STORE_set_verify_cb((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_verify_cb
+X509_STORE_get_verify_cb(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_issuer(
+    X509_STORE *ctx, X509_STORE_CTX_get_issuer_fn get_issuer);
+OPENSSL_EXPORT X509_STORE_CTX_get_issuer_fn
+X509_STORE_get_get_issuer(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_issued(
+    X509_STORE *ctx, X509_STORE_CTX_check_issued_fn check_issued);
+OPENSSL_EXPORT X509_STORE_CTX_check_issued_fn
+X509_STORE_get_check_issued(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_revocation(
+    X509_STORE *ctx, X509_STORE_CTX_check_revocation_fn check_revocation);
+OPENSSL_EXPORT X509_STORE_CTX_check_revocation_fn
+X509_STORE_get_check_revocation(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_crl(X509_STORE *ctx,
+                                           X509_STORE_CTX_get_crl_fn get_crl);
+OPENSSL_EXPORT X509_STORE_CTX_get_crl_fn
+X509_STORE_get_get_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_crl(
+    X509_STORE *ctx, X509_STORE_CTX_check_crl_fn check_crl);
+OPENSSL_EXPORT X509_STORE_CTX_check_crl_fn
+X509_STORE_get_check_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cert_crl(
+    X509_STORE *ctx, X509_STORE_CTX_cert_crl_fn cert_crl);
+OPENSSL_EXPORT X509_STORE_CTX_cert_crl_fn
+X509_STORE_get_cert_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_certs(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_certs_fn lookup_certs);
+OPENSSL_EXPORT X509_STORE_CTX_lookup_certs_fn
+X509_STORE_get_lookup_certs(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_crls(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_crls_fn lookup_crls);
+#define X509_STORE_set_lookup_crls_cb(ctx, func) \
+  X509_STORE_set_lookup_crls((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_lookup_crls_fn
+X509_STORE_get_lookup_crls(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cleanup(X509_STORE *ctx,
+                                           X509_STORE_CTX_cleanup_fn cleanup);
+OPENSSL_EXPORT X509_STORE_CTX_cleanup_fn
+X509_STORE_get_cleanup(X509_STORE *ctx);
+
+
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_new(void);
+
+OPENSSL_EXPORT int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
+
+OPENSSL_EXPORT void X509_STORE_CTX_zero(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
+			 X509 *x509, STACK_OF(X509) *chain);
+OPENSSL_EXPORT void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
+OPENSSL_EXPORT void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
+
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
+
+OPENSSL_EXPORT int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
+OPENSSL_EXPORT int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
+
+OPENSSL_EXPORT int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
+	X509_OBJECT *ret);
+
+OPENSSL_EXPORT int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+	long argl, char **ret);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+#endif
+
+
+OPENSSL_EXPORT X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
+OPENSSL_EXPORT void X509_LOOKUP_free(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_init(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	ASN1_INTEGER *serial, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+	unsigned char *bytes, int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
+	int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int	X509_STORE_load_locations (X509_STORE *ctx,
+		const char *file, const char *dir);
+OPENSSL_EXPORT int	X509_STORE_set_default_paths(X509_STORE *ctx);
+#endif
+
+OPENSSL_EXPORT int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int	X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
+OPENSSL_EXPORT void *	X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *	X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
+OPENSSL_EXPORT STACK_OF(X509) *
+    X509_STORE_CTX_get0_untrusted(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set0_crls(X509_STORE_CTX *c,STACK_OF(X509_CRL) *sk);
+OPENSSL_EXPORT int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+				int purpose, int trust);
+OPENSSL_EXPORT void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags);
+OPENSSL_EXPORT void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
+								time_t t);
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+				  int (*verify_cb)(int, X509_STORE_CTX *));
+  
+OPENSSL_EXPORT X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);
+
+/* X509_VERIFY_PARAM functions */
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to, 
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+							unsigned long flags);
+OPENSSL_EXPORT unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+						ASN1_OBJECT *policy);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param, 
+					STACK_OF(ASN1_OBJECT) *policies);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+				const char *name, size_t namelen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+					       const char *name,
+					       size_t namelen);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+					unsigned int flags);
+OPENSSL_EXPORT char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+				const char *email, size_t emaillen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+					const unsigned char *ip, size_t iplen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_count(void);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_table_cleanup(void);
+
+OPENSSL_EXPORT int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
+			STACK_OF(X509) *certs,
+			STACK_OF(ASN1_OBJECT) *policy_oids,
+			unsigned int flags);
+
+OPENSSL_EXPORT void X509_policy_tree_free(X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
+OPENSSL_EXPORT X509_POLICY_LEVEL *
+	X509_policy_tree_get0_level(const X509_POLICY_TREE *tree, int i);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_user_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_level_node_count(X509_POLICY_LEVEL *level);
+
+OPENSSL_EXPORT X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level, int i);
+
+OPENSSL_EXPORT const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node);
+
+OPENSSL_EXPORT STACK_OF(POLICYQUALINFO) *
+	X509_policy_node_get0_qualifiers(const X509_POLICY_NODE *node);
+OPENSSL_EXPORT const X509_POLICY_NODE *
+	X509_policy_node_get0_parent(const X509_POLICY_NODE *node);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.grpc_back
new file mode 100644
index 0000000..f262334
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509_vfy.h.grpc_back	
@@ -0,0 +1,680 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_X509_H
+#include <openssl/x509.h>
+/* openssl/x509.h ends up #include-ing this file at about the only
+ * appropriate moment. */
+#endif
+
+#ifndef HEADER_X509_VFY_H
+#define HEADER_X509_VFY_H
+
+#include <openssl/thread.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/*******************************/
+/*
+SSL_CTX -> X509_STORE    
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+		-> X509_LOOKUP
+			->X509_LOOKUP_METHOD
+ 
+SSL	-> X509_STORE_CTX
+		->X509_STORE    
+
+The X509_STORE holds the tables etc for verification stuff.
+A X509_STORE_CTX is used while validating a single certificate.
+The X509_STORE has X509_LOOKUPs for looking up certs.
+The X509_STORE then calls a function to actually verify the
+certificate chain.
+*/
+
+#define X509_LU_X509		1
+#define X509_LU_CRL		2
+#define X509_LU_PKEY		3
+
+typedef struct x509_object_st
+	{
+	/* one of the above types */
+	int type;
+	union	{
+		char *ptr;
+		X509 *x509;
+		X509_CRL *crl;
+		EVP_PKEY *pkey;
+		} data;
+	} X509_OBJECT;
+
+DEFINE_STACK_OF(X509_LOOKUP)
+DEFINE_STACK_OF(X509_OBJECT)
+
+/* This is a static that defines the function interface */
+typedef struct x509_lookup_method_st
+	{
+	const char *name;
+	int (*new_item)(X509_LOOKUP *ctx);
+	void (*free)(X509_LOOKUP *ctx);
+	int (*init)(X509_LOOKUP *ctx);
+	int (*shutdown)(X509_LOOKUP *ctx);
+	int (*ctrl)(X509_LOOKUP *ctx,int cmd,const char *argc,long argl,
+			char **ret);
+	int (*get_by_subject)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+			      X509_OBJECT *ret);
+	int (*get_by_issuer_serial)(X509_LOOKUP *ctx,int type,X509_NAME *name,
+				    ASN1_INTEGER *serial,X509_OBJECT *ret);
+	int (*get_by_fingerprint)(X509_LOOKUP *ctx,int type,
+				  unsigned char *bytes,int len,
+				  X509_OBJECT *ret);
+	int (*get_by_alias)(X509_LOOKUP *ctx,int type,char *str,int len,
+			    X509_OBJECT *ret);
+	} X509_LOOKUP_METHOD;
+
+typedef struct X509_VERIFY_PARAM_ID_st X509_VERIFY_PARAM_ID;
+
+/* This structure hold all parameters associated with a verify operation
+ * by including an X509_VERIFY_PARAM structure in related structures the
+ * parameters used can be customized
+ */
+
+struct X509_VERIFY_PARAM_st
+	{
+	char *name;
+	time_t check_time;	/* Time to use */
+	unsigned long inh_flags; /* Inheritance flags */
+	unsigned long flags;	/* Various verify flags */
+	int purpose;		/* purpose to check untrusted certificates */
+	int trust;		/* trust setting to check */
+	int depth;		/* Verify depth */
+	STACK_OF(ASN1_OBJECT) *policies;	/* Permissible policies */
+	X509_VERIFY_PARAM_ID *id;	/* opaque ID data */
+	};
+
+DEFINE_STACK_OF(X509_VERIFY_PARAM)
+
+typedef int (*X509_STORE_CTX_verify_cb)(int, X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_get_issuer_fn)(X509 **issuer,
+                                            X509_STORE_CTX *ctx, X509 *x);
+typedef int (*X509_STORE_CTX_check_issued_fn)(X509_STORE_CTX *ctx,
+                                              X509 *x, X509 *issuer);
+typedef int (*X509_STORE_CTX_check_revocation_fn)(X509_STORE_CTX *ctx);
+typedef int (*X509_STORE_CTX_get_crl_fn)(X509_STORE_CTX *ctx,
+                                         X509_CRL **crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl);
+typedef int (*X509_STORE_CTX_cert_crl_fn)(X509_STORE_CTX *ctx,
+                                          X509_CRL *crl, X509 *x);
+typedef int (*X509_STORE_CTX_check_policy_fn)(X509_STORE_CTX *ctx);
+typedef STACK_OF(X509) *(*X509_STORE_CTX_lookup_certs_fn)(X509_STORE_CTX *ctx,
+                                                          X509_NAME *nm);
+typedef STACK_OF(X509_CRL) *(*X509_STORE_CTX_lookup_crls_fn)(X509_STORE_CTX *ctx,
+                                                             X509_NAME *nm);
+typedef int (*X509_STORE_CTX_cleanup_fn)(X509_STORE_CTX *ctx);
+
+/* This is used to hold everything.  It is used for all certificate
+ * validation.  Once we have a certificate chain, the 'verify'
+ * function is then called to actually check the cert chain. */
+struct x509_store_st
+	{
+	/* The following is a cache of trusted certs */
+	int cache; 	/* if true, stash any hits */
+	STACK_OF(X509_OBJECT) *objs;	/* Cache of all objects */
+	CRYPTO_MUTEX objs_lock;
+	STACK_OF(X509) *additional_untrusted;
+
+	/* These are external lookup methods */
+	STACK_OF(X509_LOOKUP) *get_cert_methods;
+
+	X509_VERIFY_PARAM *param;
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;	/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	CRYPTO_refcount_t references;
+	} /* X509_STORE */;
+
+OPENSSL_EXPORT int X509_STORE_set_depth(X509_STORE *store, int depth);
+
+/* This is the functions plus an instance of the local variables. */
+struct x509_lookup_st
+	{
+	int init;			/* have we been started */
+	int skip;			/* don't use us. */
+	X509_LOOKUP_METHOD *method;	/* the functions */
+	char *method_data;		/* method data */
+
+	X509_STORE *store_ctx;	/* who owns us */
+	} /* X509_LOOKUP */;
+
+/* This is a used when verifying cert chains.  Since the
+ * gathering of the cert chain can take some time (and have to be
+ * 'retried', this needs to be kept and passed around. */
+struct x509_store_ctx_st      /* X509_STORE_CTX */
+	{
+	X509_STORE *ctx;
+
+	/* The following are set by the caller */
+	X509 *cert;		/* The cert to check */
+	STACK_OF(X509) *untrusted;	/* chain of X509s - untrusted - passed in */
+	STACK_OF(X509_CRL) *crls;	/* set of CRLs passed in */
+
+	X509_VERIFY_PARAM *param;
+	void *other_ctx;	/* Other info for use with get_issuer() */
+
+	/* Callbacks for various operations */
+	X509_STORE_CTX_verify_fn verify;	/* called to verify a certificate */
+	X509_STORE_CTX_verify_cb verify_cb;		/* error callback */
+	X509_STORE_CTX_get_issuer_fn get_issuer;	/* get issuers cert from ctx */
+	X509_STORE_CTX_check_issued_fn check_issued; /* check issued */
+	X509_STORE_CTX_check_revocation_fn check_revocation; /* Check revocation status of chain */
+	X509_STORE_CTX_get_crl_fn get_crl; /* retrieve CRL */
+	X509_STORE_CTX_check_crl_fn check_crl; /* Check CRL validity */
+	X509_STORE_CTX_cert_crl_fn cert_crl; /* Check certificate against CRL */
+	X509_STORE_CTX_check_policy_fn check_policy;
+	X509_STORE_CTX_lookup_certs_fn lookup_certs;
+	X509_STORE_CTX_lookup_crls_fn lookup_crls;
+	X509_STORE_CTX_cleanup_fn cleanup;
+
+	/* The following is built up */
+	int valid;		/* if 0, rebuild chain */
+	int last_untrusted;	/* index of last untrusted cert */
+	STACK_OF(X509) *chain; 		/* chain of X509s - built up and trusted */
+	X509_POLICY_TREE *tree;	/* Valid policy tree */
+
+	int explicit_policy;	/* Require explicit policy value */
+
+	/* When something goes wrong, this is why */
+	int error_depth;
+	int error;
+	X509 *current_cert;
+	X509 *current_issuer;	/* cert currently being tested as valid issuer */
+	X509_CRL *current_crl;	/* current CRL */
+
+	int current_crl_score;  /* score of current CRL */
+	unsigned int current_reasons;  /* Reason mask */
+
+	X509_STORE_CTX *parent; /* For CRL path validation: parent context */
+
+	CRYPTO_EX_DATA ex_data;
+	} /* X509_STORE_CTX */;
+
+OPENSSL_EXPORT void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);
+
+#define X509_STORE_CTX_set_app_data(ctx,data) \
+	X509_STORE_CTX_set_ex_data(ctx,0,data)
+#define X509_STORE_CTX_get_app_data(ctx) \
+	X509_STORE_CTX_get_ex_data(ctx,0)
+
+#define X509_L_FILE_LOAD	1
+#define X509_L_ADD_DIR		2
+
+#define X509_LOOKUP_load_file(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
+
+#define X509_LOOKUP_add_dir(x,name,type) \
+		X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
+
+#define		X509_V_OK					0
+#define		X509_V_ERR_UNSPECIFIED				1
+
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT		2
+#define		X509_V_ERR_UNABLE_TO_GET_CRL			3
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE	4
+#define		X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE	5
+#define		X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY	6
+#define		X509_V_ERR_CERT_SIGNATURE_FAILURE		7
+#define		X509_V_ERR_CRL_SIGNATURE_FAILURE		8
+#define		X509_V_ERR_CERT_NOT_YET_VALID			9
+#define		X509_V_ERR_CERT_HAS_EXPIRED			10
+#define		X509_V_ERR_CRL_NOT_YET_VALID			11
+#define		X509_V_ERR_CRL_HAS_EXPIRED			12
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD	13
+#define		X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD	14
+#define		X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD	15
+#define		X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD	16
+#define		X509_V_ERR_OUT_OF_MEM				17
+#define		X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT		18
+#define		X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN		19
+#define		X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY	20
+#define		X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE	21
+#define		X509_V_ERR_CERT_CHAIN_TOO_LONG			22
+#define		X509_V_ERR_CERT_REVOKED				23
+#define		X509_V_ERR_INVALID_CA				24
+#define		X509_V_ERR_PATH_LENGTH_EXCEEDED			25
+#define		X509_V_ERR_INVALID_PURPOSE			26
+#define		X509_V_ERR_CERT_UNTRUSTED			27
+#define		X509_V_ERR_CERT_REJECTED			28
+/* These are 'informational' when looking for issuer cert */
+#define		X509_V_ERR_SUBJECT_ISSUER_MISMATCH		29
+#define		X509_V_ERR_AKID_SKID_MISMATCH			30
+#define		X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH		31
+#define		X509_V_ERR_KEYUSAGE_NO_CERTSIGN			32
+
+#define		X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER		33
+#define		X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION		34
+#define		X509_V_ERR_KEYUSAGE_NO_CRL_SIGN			35
+#define		X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION	36
+#define		X509_V_ERR_INVALID_NON_CA			37
+#define		X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED		38
+#define		X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE	39
+#define		X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED	40
+
+#define		X509_V_ERR_INVALID_EXTENSION			41
+#define		X509_V_ERR_INVALID_POLICY_EXTENSION		42
+#define		X509_V_ERR_NO_EXPLICIT_POLICY			43
+#define		X509_V_ERR_DIFFERENT_CRL_SCOPE			44
+#define		X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE	45
+
+#define		X509_V_ERR_UNNESTED_RESOURCE			46
+
+#define		X509_V_ERR_PERMITTED_VIOLATION			47
+#define		X509_V_ERR_EXCLUDED_VIOLATION			48
+#define		X509_V_ERR_SUBTREE_MINMAX			49
+#define		X509_V_ERR_APPLICATION_VERIFICATION		50
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE		51
+#define		X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX	52
+#define		X509_V_ERR_UNSUPPORTED_NAME_SYNTAX		53
+#define		X509_V_ERR_CRL_PATH_VALIDATION_ERROR		54
+
+/* Suite B mode algorithm violation */
+#define		X509_V_ERR_SUITE_B_INVALID_VERSION		56
+#define		X509_V_ERR_SUITE_B_INVALID_ALGORITHM		57
+#define		X509_V_ERR_SUITE_B_INVALID_CURVE		58
+#define		X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM	59
+#define		X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED		60
+#define		X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256	61
+
+/* Host, email and IP check errors */
+#define		X509_V_ERR_HOSTNAME_MISMATCH			62
+#define		X509_V_ERR_EMAIL_MISMATCH			63
+#define		X509_V_ERR_IP_ADDRESS_MISMATCH			64
+
+/* Caller error */
+#define		X509_V_ERR_INVALID_CALL				65
+/* Issuer lookup error */
+#define		X509_V_ERR_STORE_LOOKUP				66
+
+#define		X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS	67
+
+/* Certificate verify flags */
+
+/* Send issuer+subject checks to verify_cb */
+#define	X509_V_FLAG_CB_ISSUER_CHECK		0x1
+/* Use check time instead of current time */
+#define	X509_V_FLAG_USE_CHECK_TIME		0x2
+/* Lookup CRLs */
+#define	X509_V_FLAG_CRL_CHECK			0x4
+/* Lookup CRLs for whole chain */
+#define	X509_V_FLAG_CRL_CHECK_ALL		0x8
+/* Ignore unhandled critical extensions */
+#define	X509_V_FLAG_IGNORE_CRITICAL		0x10
+/* Does nothing as its functionality has been enabled by default. */
+#define	X509_V_FLAG_X509_STRICT			0x00
+/* Enable proxy certificate validation */
+#define	X509_V_FLAG_ALLOW_PROXY_CERTS		0x40
+/* Enable policy checking */
+#define X509_V_FLAG_POLICY_CHECK		0x80
+/* Policy variable require-explicit-policy */
+#define X509_V_FLAG_EXPLICIT_POLICY		0x100
+/* Policy variable inhibit-any-policy */
+#define	X509_V_FLAG_INHIBIT_ANY			0x200
+/* Policy variable inhibit-policy-mapping */
+#define X509_V_FLAG_INHIBIT_MAP			0x400
+/* Notify callback that policy is OK */
+#define X509_V_FLAG_NOTIFY_POLICY		0x800
+/* Extended CRL features such as indirect CRLs, alternate CRL signing keys */
+#define X509_V_FLAG_EXTENDED_CRL_SUPPORT	0x1000
+/* Delta CRL support */
+#define X509_V_FLAG_USE_DELTAS			0x2000
+/* Check selfsigned CA signature */
+#define X509_V_FLAG_CHECK_SS_SIGNATURE		0x4000
+/* Use trusted store first */
+#define X509_V_FLAG_TRUSTED_FIRST		0x8000
+/* Suite B 128 bit only mode: not normally used */
+#define X509_V_FLAG_SUITEB_128_LOS_ONLY		0x10000
+/* Suite B 192 bit only mode */
+#define X509_V_FLAG_SUITEB_192_LOS		0x20000
+/* Suite B 128 bit mode allowing 192 bit algorithms */
+#define X509_V_FLAG_SUITEB_128_LOS		0x30000
+
+/* Allow partial chains if at least one certificate is in trusted store */
+#define X509_V_FLAG_PARTIAL_CHAIN		0x80000
+
+/* If the initial chain is not trusted, do not attempt to build an alternative
+ * chain. Alternate chain checking was introduced in 1.0.2b. Setting this flag
+ * will force the behaviour to match that of previous versions. */
+#define X509_V_FLAG_NO_ALT_CHAINS		0x100000
+
+#define X509_VP_FLAG_DEFAULT			0x1
+#define X509_VP_FLAG_OVERWRITE			0x2
+#define X509_VP_FLAG_RESET_FLAGS		0x4
+#define X509_VP_FLAG_LOCKED			0x8
+#define X509_VP_FLAG_ONCE			0x10
+
+/* Internal use: mask of policy related options */
+#define X509_V_FLAG_POLICY_MASK (X509_V_FLAG_POLICY_CHECK \
+				| X509_V_FLAG_EXPLICIT_POLICY \
+				| X509_V_FLAG_INHIBIT_ANY \
+				| X509_V_FLAG_INHIBIT_MAP)
+
+OPENSSL_EXPORT int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
+	     X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,int type,X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x);
+OPENSSL_EXPORT int X509_OBJECT_up_ref_count(X509_OBJECT *a);
+OPENSSL_EXPORT void X509_OBJECT_free_contents(X509_OBJECT *a);
+OPENSSL_EXPORT int X509_OBJECT_get_type(const X509_OBJECT *a);
+OPENSSL_EXPORT X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a);
+OPENSSL_EXPORT X509_STORE *X509_STORE_new(void );
+OPENSSL_EXPORT int X509_STORE_up_ref(X509_STORE *store);
+OPENSSL_EXPORT void X509_STORE_free(X509_STORE *v);
+
+OPENSSL_EXPORT STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st);
+OPENSSL_EXPORT STACK_OF(X509)* X509_STORE_get1_certs(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT STACK_OF(X509_CRL)* X509_STORE_get1_crls(X509_STORE_CTX *st, X509_NAME *nm);
+OPENSSL_EXPORT int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
+OPENSSL_EXPORT int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_set_trust(X509_STORE *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *pm);
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);
+/* X509_STORE_set0_additional_untrusted sets a stack of additional, untrusted
+ * certificates that are available for chain building. This function does not
+ * take ownership of the stack. */
+OPENSSL_EXPORT void X509_STORE_set0_additional_untrusted(
+    X509_STORE *ctx, STACK_OF(X509) *untrusted);
+
+OPENSSL_EXPORT void X509_STORE_set_verify(X509_STORE *ctx,
+                                          X509_STORE_CTX_verify_fn verify);
+#define X509_STORE_set_verify_func(ctx, func) \
+  X509_STORE_set_verify((ctx), (func))
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx,
+                                              X509_STORE_CTX_verify_fn verify);
+OPENSSL_EXPORT X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_verify_cb(
+    X509_STORE *ctx, X509_STORE_CTX_verify_cb verify_cb);
+#define X509_STORE_set_verify_cb_func(ctx, func) \
+  X509_STORE_set_verify_cb((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_verify_cb
+X509_STORE_get_verify_cb(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_issuer(
+    X509_STORE *ctx, X509_STORE_CTX_get_issuer_fn get_issuer);
+OPENSSL_EXPORT X509_STORE_CTX_get_issuer_fn
+X509_STORE_get_get_issuer(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_issued(
+    X509_STORE *ctx, X509_STORE_CTX_check_issued_fn check_issued);
+OPENSSL_EXPORT X509_STORE_CTX_check_issued_fn
+X509_STORE_get_check_issued(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_revocation(
+    X509_STORE *ctx, X509_STORE_CTX_check_revocation_fn check_revocation);
+OPENSSL_EXPORT X509_STORE_CTX_check_revocation_fn
+X509_STORE_get_check_revocation(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_crl(X509_STORE *ctx,
+                                           X509_STORE_CTX_get_crl_fn get_crl);
+OPENSSL_EXPORT X509_STORE_CTX_get_crl_fn
+X509_STORE_get_get_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_crl(
+    X509_STORE *ctx, X509_STORE_CTX_check_crl_fn check_crl);
+OPENSSL_EXPORT X509_STORE_CTX_check_crl_fn
+X509_STORE_get_check_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cert_crl(
+    X509_STORE *ctx, X509_STORE_CTX_cert_crl_fn cert_crl);
+OPENSSL_EXPORT X509_STORE_CTX_cert_crl_fn
+X509_STORE_get_cert_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_certs(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_certs_fn lookup_certs);
+OPENSSL_EXPORT X509_STORE_CTX_lookup_certs_fn
+X509_STORE_get_lookup_certs(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_crls(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_crls_fn lookup_crls);
+#define X509_STORE_set_lookup_crls_cb(ctx, func) \
+  X509_STORE_set_lookup_crls((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_lookup_crls_fn
+X509_STORE_get_lookup_crls(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cleanup(X509_STORE *ctx,
+                                           X509_STORE_CTX_cleanup_fn cleanup);
+OPENSSL_EXPORT X509_STORE_CTX_cleanup_fn
+X509_STORE_get_cleanup(X509_STORE *ctx);
+
+
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_new(void);
+
+OPENSSL_EXPORT int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
+
+OPENSSL_EXPORT void X509_STORE_CTX_zero(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
+			 X509 *x509, STACK_OF(X509) *chain);
+OPENSSL_EXPORT void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
+OPENSSL_EXPORT void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
+
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
+
+OPENSSL_EXPORT int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
+OPENSSL_EXPORT int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
+
+OPENSSL_EXPORT int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
+	X509_OBJECT *ret);
+
+OPENSSL_EXPORT int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+	long argl, char **ret);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+OPENSSL_EXPORT int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
+#endif
+
+
+OPENSSL_EXPORT X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
+OPENSSL_EXPORT void X509_LOOKUP_free(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_init(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
+	ASN1_INTEGER *serial, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+	unsigned char *bytes, int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
+	int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int	X509_STORE_load_locations (X509_STORE *ctx,
+		const char *file, const char *dir);
+OPENSSL_EXPORT int	X509_STORE_set_default_paths(X509_STORE *ctx);
+#endif
+
+OPENSSL_EXPORT int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+	CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int	X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
+OPENSSL_EXPORT void *	X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
+OPENSSL_EXPORT int	X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *	X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
+OPENSSL_EXPORT void	X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
+OPENSSL_EXPORT STACK_OF(X509) *
+    X509_STORE_CTX_get0_untrusted(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void	X509_STORE_CTX_set0_crls(X509_STORE_CTX *c,STACK_OF(X509_CRL) *sk);
+OPENSSL_EXPORT int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
+				int purpose, int trust);
+OPENSSL_EXPORT void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags);
+OPENSSL_EXPORT void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
+								time_t t);
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
+				  int (*verify_cb)(int, X509_STORE_CTX *));
+  
+OPENSSL_EXPORT X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);
+
+/* X509_VERIFY_PARAM functions */
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to, 
+						const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+							unsigned long flags);
+OPENSSL_EXPORT unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+						ASN1_OBJECT *policy);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param, 
+					STACK_OF(ASN1_OBJECT) *policies);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+				const char *name, size_t namelen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+					       const char *name,
+					       size_t namelen);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+					unsigned int flags);
+OPENSSL_EXPORT char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+				const char *email, size_t emaillen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+					const unsigned char *ip, size_t iplen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_count(void);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_table_cleanup(void);
+
+OPENSSL_EXPORT int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
+			STACK_OF(X509) *certs,
+			STACK_OF(ASN1_OBJECT) *policy_oids,
+			unsigned int flags);
+
+OPENSSL_EXPORT void X509_policy_tree_free(X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
+OPENSSL_EXPORT X509_POLICY_LEVEL *
+	X509_policy_tree_get0_level(const X509_POLICY_TREE *tree, int i);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *
+	X509_policy_tree_get0_user_policies(const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_level_node_count(X509_POLICY_LEVEL *level);
+
+OPENSSL_EXPORT X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level, int i);
+
+OPENSSL_EXPORT const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node);
+
+OPENSSL_EXPORT STACK_OF(POLICYQUALINFO) *
+	X509_policy_node_get0_qualifiers(const X509_POLICY_NODE *node);
+OPENSSL_EXPORT const X509_POLICY_NODE *
+	X509_policy_node_get0_parent(const X509_POLICY_NODE *node);
+
+#ifdef  __cplusplus
+}
+#endif
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h
new file mode 100644
index 0000000..cb67972
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h	
@@ -0,0 +1,831 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999. */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef HEADER_X509V3_H
+#define HEADER_X509V3_H
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/conf.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/lhash.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/* Forward reference */
+struct v3_ext_method;
+struct v3_ext_ctx;
+
+/* Useful typedefs */
+
+typedef void * (*X509V3_EXT_NEW)(void);
+typedef void (*X509V3_EXT_FREE)(void *);
+typedef void * (*X509V3_EXT_D2I)(void *, const unsigned char ** , long);
+typedef int (*X509V3_EXT_I2D)(void *, unsigned char **);
+typedef STACK_OF(CONF_VALUE) *
+  (*X509V3_EXT_I2V)(const struct v3_ext_method *method, void *ext,
+		    STACK_OF(CONF_VALUE) *extlist);
+typedef void * (*X509V3_EXT_V2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx,
+				 STACK_OF(CONF_VALUE) *values);
+typedef char * (*X509V3_EXT_I2S)(const struct v3_ext_method *method, void *ext);
+typedef void * (*X509V3_EXT_S2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+typedef int (*X509V3_EXT_I2R)(const struct v3_ext_method *method, void *ext,
+			      BIO *out, int indent);
+typedef void * (*X509V3_EXT_R2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+
+/* V3 extension structure */
+
+struct v3_ext_method {
+int ext_nid;
+int ext_flags;
+/* If this is set the following four fields are ignored */
+ASN1_ITEM_EXP *it;
+/* Old style ASN1 calls */
+X509V3_EXT_NEW ext_new;
+X509V3_EXT_FREE ext_free;
+X509V3_EXT_D2I d2i;
+X509V3_EXT_I2D i2d;
+
+/* The following pair is used for string extensions */
+X509V3_EXT_I2S i2s;
+X509V3_EXT_S2I s2i;
+
+/* The following pair is used for multi-valued extensions */
+X509V3_EXT_I2V i2v;
+X509V3_EXT_V2I v2i;
+
+/* The following are used for raw extensions */
+X509V3_EXT_I2R i2r;
+X509V3_EXT_R2I r2i;
+
+void *usr_data;	/* Any extension specific data */
+};
+
+typedef struct X509V3_CONF_METHOD_st {
+char * (*get_string)(void *db, char *section, char *value);
+STACK_OF(CONF_VALUE) * (*get_section)(void *db, char *section);
+void (*free_string)(void *db, char * string);
+void (*free_section)(void *db, STACK_OF(CONF_VALUE) *section);
+} X509V3_CONF_METHOD;
+
+/* Context specific info */
+struct v3_ext_ctx {
+#define CTX_TEST 0x1
+int flags;
+X509 *issuer_cert;
+X509 *subject_cert;
+X509_REQ *subject_req;
+X509_CRL *crl;
+const X509V3_CONF_METHOD *db_meth;
+void *db;
+/* Maybe more here */
+};
+
+typedef struct v3_ext_method X509V3_EXT_METHOD;
+
+DEFINE_STACK_OF(X509V3_EXT_METHOD)
+
+/* ext_flags values */
+#define X509V3_EXT_DYNAMIC	0x1
+#define X509V3_EXT_CTX_DEP	0x2
+#define X509V3_EXT_MULTILINE	0x4
+
+typedef BIT_STRING_BITNAME ENUMERATED_NAMES;
+
+struct BASIC_CONSTRAINTS_st {
+int ca;
+ASN1_INTEGER *pathlen;
+};
+
+
+typedef struct PKEY_USAGE_PERIOD_st {
+ASN1_GENERALIZEDTIME *notBefore;
+ASN1_GENERALIZEDTIME *notAfter;
+} PKEY_USAGE_PERIOD;
+
+typedef struct otherName_st {
+ASN1_OBJECT *type_id;
+ASN1_TYPE *value;
+} OTHERNAME;
+
+typedef struct EDIPartyName_st {
+	ASN1_STRING *nameAssigner;
+	ASN1_STRING *partyName;
+} EDIPARTYNAME;
+
+typedef struct GENERAL_NAME_st {
+
+#define GEN_OTHERNAME	0
+#define GEN_EMAIL	1
+#define GEN_DNS		2
+#define GEN_X400	3
+#define GEN_DIRNAME	4
+#define GEN_EDIPARTY	5
+#define GEN_URI		6
+#define GEN_IPADD	7
+#define GEN_RID		8
+
+int type;
+union {
+	char *ptr;
+	OTHERNAME *otherName; /* otherName */
+	ASN1_IA5STRING *rfc822Name;
+	ASN1_IA5STRING *dNSName;
+	ASN1_TYPE *x400Address;
+	X509_NAME *directoryName;
+	EDIPARTYNAME *ediPartyName;
+	ASN1_IA5STRING *uniformResourceIdentifier;
+	ASN1_OCTET_STRING *iPAddress;
+	ASN1_OBJECT *registeredID;
+
+	/* Old names */
+	ASN1_OCTET_STRING *ip; /* iPAddress */
+	X509_NAME *dirn;		/* dirn */
+	ASN1_IA5STRING *ia5;/* rfc822Name, dNSName, uniformResourceIdentifier */
+	ASN1_OBJECT *rid; /* registeredID */
+	ASN1_TYPE *other; /* x400Address */
+} d;
+} GENERAL_NAME;
+
+DEFINE_STACK_OF(GENERAL_NAME)
+DECLARE_ASN1_SET_OF(GENERAL_NAME)
+
+typedef STACK_OF(GENERAL_NAME) GENERAL_NAMES;
+
+DEFINE_STACK_OF(GENERAL_NAMES)
+
+typedef struct ACCESS_DESCRIPTION_st {
+	ASN1_OBJECT *method;
+	GENERAL_NAME *location;
+} ACCESS_DESCRIPTION;
+
+DEFINE_STACK_OF(ACCESS_DESCRIPTION)
+DECLARE_ASN1_SET_OF(ACCESS_DESCRIPTION)
+
+typedef STACK_OF(ACCESS_DESCRIPTION) AUTHORITY_INFO_ACCESS;
+
+typedef STACK_OF(ASN1_OBJECT) EXTENDED_KEY_USAGE;
+
+typedef struct DIST_POINT_NAME_st {
+int type;
+union {
+	GENERAL_NAMES *fullname;
+	STACK_OF(X509_NAME_ENTRY) *relativename;
+} name;
+/* If relativename then this contains the full distribution point name */
+X509_NAME *dpname;
+} DIST_POINT_NAME;
+/* All existing reasons */
+#define CRLDP_ALL_REASONS	0x807f
+
+#define CRL_REASON_NONE				(-1)
+#define CRL_REASON_UNSPECIFIED			0
+#define CRL_REASON_KEY_COMPROMISE		1
+#define CRL_REASON_CA_COMPROMISE		2
+#define CRL_REASON_AFFILIATION_CHANGED		3
+#define CRL_REASON_SUPERSEDED			4
+#define CRL_REASON_CESSATION_OF_OPERATION	5
+#define CRL_REASON_CERTIFICATE_HOLD		6
+#define CRL_REASON_REMOVE_FROM_CRL		8
+#define CRL_REASON_PRIVILEGE_WITHDRAWN		9
+#define CRL_REASON_AA_COMPROMISE		10
+
+struct DIST_POINT_st {
+DIST_POINT_NAME	*distpoint;
+ASN1_BIT_STRING *reasons;
+GENERAL_NAMES *CRLissuer;
+int dp_reasons;
+};
+
+typedef STACK_OF(DIST_POINT) CRL_DIST_POINTS;
+
+DEFINE_STACK_OF(DIST_POINT)
+DECLARE_ASN1_SET_OF(DIST_POINT)
+
+struct AUTHORITY_KEYID_st {
+ASN1_OCTET_STRING *keyid;
+GENERAL_NAMES *issuer;
+ASN1_INTEGER *serial;
+};
+
+/* Strong extranet structures */
+
+typedef struct SXNET_ID_st {
+	ASN1_INTEGER *zone;
+	ASN1_OCTET_STRING *user;
+} SXNETID;
+
+DEFINE_STACK_OF(SXNETID)
+DECLARE_ASN1_SET_OF(SXNETID)
+
+typedef struct SXNET_st {
+	ASN1_INTEGER *version;
+	STACK_OF(SXNETID) *ids;
+} SXNET;
+
+typedef struct NOTICEREF_st {
+	ASN1_STRING *organization;
+	STACK_OF(ASN1_INTEGER) *noticenos;
+} NOTICEREF;
+
+typedef struct USERNOTICE_st {
+	NOTICEREF *noticeref;
+	ASN1_STRING *exptext;
+} USERNOTICE;
+
+typedef struct POLICYQUALINFO_st {
+	ASN1_OBJECT *pqualid;
+	union {
+		ASN1_IA5STRING *cpsuri;
+		USERNOTICE *usernotice;
+		ASN1_TYPE *other;
+	} d;
+} POLICYQUALINFO;
+
+DEFINE_STACK_OF(POLICYQUALINFO)
+DECLARE_ASN1_SET_OF(POLICYQUALINFO)
+
+typedef struct POLICYINFO_st {
+	ASN1_OBJECT *policyid;
+	STACK_OF(POLICYQUALINFO) *qualifiers;
+} POLICYINFO;
+
+typedef STACK_OF(POLICYINFO) CERTIFICATEPOLICIES;
+
+DEFINE_STACK_OF(POLICYINFO)
+DECLARE_ASN1_SET_OF(POLICYINFO)
+
+typedef struct POLICY_MAPPING_st {
+	ASN1_OBJECT *issuerDomainPolicy;
+	ASN1_OBJECT *subjectDomainPolicy;
+} POLICY_MAPPING;
+
+DEFINE_STACK_OF(POLICY_MAPPING)
+
+typedef STACK_OF(POLICY_MAPPING) POLICY_MAPPINGS;
+
+typedef struct GENERAL_SUBTREE_st {
+	GENERAL_NAME *base;
+	ASN1_INTEGER *minimum;
+	ASN1_INTEGER *maximum;
+} GENERAL_SUBTREE;
+
+DEFINE_STACK_OF(GENERAL_SUBTREE)
+
+struct NAME_CONSTRAINTS_st {
+	STACK_OF(GENERAL_SUBTREE) *permittedSubtrees;
+	STACK_OF(GENERAL_SUBTREE) *excludedSubtrees;
+};
+
+typedef struct POLICY_CONSTRAINTS_st {
+	ASN1_INTEGER *requireExplicitPolicy;
+	ASN1_INTEGER *inhibitPolicyMapping;
+} POLICY_CONSTRAINTS;
+
+/* Proxy certificate structures, see RFC 3820 */
+typedef struct PROXY_POLICY_st
+	{
+	ASN1_OBJECT *policyLanguage;
+	ASN1_OCTET_STRING *policy;
+	} PROXY_POLICY;
+
+typedef struct PROXY_CERT_INFO_EXTENSION_st
+	{
+	ASN1_INTEGER *pcPathLengthConstraint;
+	PROXY_POLICY *proxyPolicy;
+	} PROXY_CERT_INFO_EXTENSION;
+
+DECLARE_ASN1_FUNCTIONS(PROXY_POLICY)
+DECLARE_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
+
+struct ISSUING_DIST_POINT_st
+	{
+	DIST_POINT_NAME *distpoint;
+	int onlyuser;
+	int onlyCA;
+	ASN1_BIT_STRING *onlysomereasons;
+	int indirectCRL;
+	int onlyattr;
+	};
+
+/* Values in idp_flags field */
+/* IDP present */
+#define	IDP_PRESENT	0x1
+/* IDP values inconsistent */
+#define IDP_INVALID	0x2
+/* onlyuser true */
+#define	IDP_ONLYUSER	0x4
+/* onlyCA true */
+#define	IDP_ONLYCA	0x8
+/* onlyattr true */
+#define IDP_ONLYATTR	0x10
+/* indirectCRL true */
+#define IDP_INDIRECT	0x20
+/* onlysomereasons present */
+#define IDP_REASONS	0x40
+
+#define X509V3_conf_err(val) ERR_add_error_data(6, "section:", (val)->section, \
+",name:", (val)->name, ",value:", (val)->value);
+
+#define X509V3_set_ctx_test(ctx) \
+			X509V3_set_ctx(ctx, NULL, NULL, NULL, NULL, CTX_TEST)
+#define X509V3_set_ctx_nodb(ctx) (ctx)->db = NULL;
+
+#define EXT_BITSTRING(nid, table) { nid, 0, ASN1_ITEM_ref(ASN1_BIT_STRING), \
+			0,0,0,0, \
+			0,0, \
+			(X509V3_EXT_I2V)i2v_ASN1_BIT_STRING, \
+			(X509V3_EXT_V2I)v2i_ASN1_BIT_STRING, \
+			NULL, NULL, \
+			(void *)(table)}
+
+#define EXT_IA5STRING(nid) { nid, 0, ASN1_ITEM_ref(ASN1_IA5STRING), \
+			0,0,0,0, \
+			(X509V3_EXT_I2S)i2s_ASN1_IA5STRING, \
+			(X509V3_EXT_S2I)s2i_ASN1_IA5STRING, \
+			0,0,0,0, \
+			NULL}
+
+#define EXT_END { -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+
+/* X509_PURPOSE stuff */
+
+#define EXFLAG_BCONS		0x1
+#define EXFLAG_KUSAGE		0x2
+#define EXFLAG_XKUSAGE		0x4
+#define EXFLAG_NSCERT		0x8
+
+#define EXFLAG_CA		0x10
+/* Really self issued not necessarily self signed */
+#define EXFLAG_SI		0x20
+#define EXFLAG_V1		0x40
+#define EXFLAG_INVALID		0x80
+#define EXFLAG_SET		0x100
+#define EXFLAG_CRITICAL		0x200
+#define EXFLAG_PROXY		0x400
+
+#define EXFLAG_INVALID_POLICY	0x800
+#define EXFLAG_FRESHEST		0x1000
+/* Self signed */
+#define EXFLAG_SS		0x2000
+
+#define KU_DIGITAL_SIGNATURE	0x0080
+#define KU_NON_REPUDIATION	0x0040
+#define KU_KEY_ENCIPHERMENT	0x0020
+#define KU_DATA_ENCIPHERMENT	0x0010
+#define KU_KEY_AGREEMENT	0x0008
+#define KU_KEY_CERT_SIGN	0x0004
+#define KU_CRL_SIGN		0x0002
+#define KU_ENCIPHER_ONLY	0x0001
+#define KU_DECIPHER_ONLY	0x8000
+
+#define NS_SSL_CLIENT		0x80
+#define NS_SSL_SERVER		0x40
+#define NS_SMIME		0x20
+#define NS_OBJSIGN		0x10
+#define NS_SSL_CA		0x04
+#define NS_SMIME_CA		0x02
+#define NS_OBJSIGN_CA		0x01
+#define NS_ANY_CA		(NS_SSL_CA|NS_SMIME_CA|NS_OBJSIGN_CA)
+
+#define XKU_SSL_SERVER		0x1	
+#define XKU_SSL_CLIENT		0x2
+#define XKU_SMIME		0x4
+#define XKU_CODE_SIGN		0x8
+#define XKU_SGC			0x10
+#define XKU_OCSP_SIGN		0x20
+#define XKU_TIMESTAMP		0x40
+#define XKU_DVCS		0x80
+#define XKU_ANYEKU		0x100
+
+#define X509_PURPOSE_DYNAMIC	0x1
+#define X509_PURPOSE_DYNAMIC_NAME	0x2
+
+typedef struct x509_purpose_st {
+	int purpose;
+	int trust;		/* Default trust ID */
+	int flags;
+	int (*check_purpose)(const struct x509_purpose_st *,
+				const X509 *, int);
+	char *name;
+	char *sname;
+	void *usr_data;
+} X509_PURPOSE;
+
+#define X509_PURPOSE_SSL_CLIENT		1
+#define X509_PURPOSE_SSL_SERVER		2
+#define X509_PURPOSE_NS_SSL_SERVER	3
+#define X509_PURPOSE_SMIME_SIGN		4
+#define X509_PURPOSE_SMIME_ENCRYPT	5
+#define X509_PURPOSE_CRL_SIGN		6
+#define X509_PURPOSE_ANY		7
+#define X509_PURPOSE_OCSP_HELPER	8
+#define X509_PURPOSE_TIMESTAMP_SIGN	9
+
+#define X509_PURPOSE_MIN		1
+#define X509_PURPOSE_MAX		9
+
+/* Flags for X509V3_EXT_print() */
+
+#define X509V3_EXT_UNKNOWN_MASK		(0xfL << 16)
+/* Return error for unknown extensions */
+#define X509V3_EXT_DEFAULT		0
+/* Print error for unknown extensions */
+#define X509V3_EXT_ERROR_UNKNOWN	(1L << 16)
+/* ASN1 parse unknown extensions */
+#define X509V3_EXT_PARSE_UNKNOWN	(2L << 16)
+/* BIO_dump unknown extensions */
+#define X509V3_EXT_DUMP_UNKNOWN		(3L << 16)
+
+/* Flags for X509V3_add1_i2d */
+
+#define X509V3_ADD_OP_MASK		0xfL
+#define X509V3_ADD_DEFAULT		0L
+#define X509V3_ADD_APPEND		1L
+#define X509V3_ADD_REPLACE		2L
+#define X509V3_ADD_REPLACE_EXISTING	3L
+#define X509V3_ADD_KEEP_EXISTING	4L
+#define X509V3_ADD_DELETE		5L
+#define X509V3_ADD_SILENT		0x10
+
+DEFINE_STACK_OF(X509_PURPOSE)
+
+DECLARE_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+DECLARE_ASN1_FUNCTIONS(SXNET)
+DECLARE_ASN1_FUNCTIONS(SXNETID)
+
+int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen); 
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user, int userlen); 
+int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *izone, char *user, int userlen); 
+
+ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone);
+ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone);
+ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone);
+
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_KEYID)
+
+DECLARE_ASN1_FUNCTIONS(PKEY_USAGE_PERIOD)
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAME)
+OPENSSL_EXPORT GENERAL_NAME *GENERAL_NAME_dup(GENERAL_NAME *a);
+OPENSSL_EXPORT int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b);
+
+
+
+OPENSSL_EXPORT ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				ASN1_BIT_STRING *bits,
+				STACK_OF(CONF_VALUE) *extlist);
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret);
+OPENSSL_EXPORT int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen);
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAMES)
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
+		GENERAL_NAMES *gen, STACK_OF(CONF_VALUE) *extlist);
+OPENSSL_EXPORT GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
+				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+
+DECLARE_ASN1_FUNCTIONS(OTHERNAME)
+DECLARE_ASN1_FUNCTIONS(EDIPARTYNAME)
+OPENSSL_EXPORT int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b);
+OPENSSL_EXPORT void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value);
+OPENSSL_EXPORT void *GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype);
+OPENSSL_EXPORT int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
+				ASN1_OBJECT *oid, ASN1_TYPE *value);
+OPENSSL_EXPORT int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen, 
+				ASN1_OBJECT **poid, ASN1_TYPE **pvalue);
+
+OPENSSL_EXPORT char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *ia5);
+OPENSSL_EXPORT ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
+
+DECLARE_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
+OPENSSL_EXPORT int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION* a);
+
+DECLARE_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
+DECLARE_ASN1_FUNCTIONS(POLICYINFO)
+DECLARE_ASN1_FUNCTIONS(POLICYQUALINFO)
+DECLARE_ASN1_FUNCTIONS(USERNOTICE)
+DECLARE_ASN1_FUNCTIONS(NOTICEREF)
+
+DECLARE_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT_NAME)
+DECLARE_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+OPENSSL_EXPORT int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname);
+
+OPENSSL_EXPORT int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc);
+
+DECLARE_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
+
+DECLARE_ASN1_ITEM(POLICY_MAPPING)
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
+DECLARE_ASN1_ITEM(POLICY_MAPPINGS)
+
+DECLARE_ASN1_ITEM(GENERAL_SUBTREE)
+DECLARE_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
+
+DECLARE_ASN1_ITEM(NAME_CONSTRAINTS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
+DECLARE_ASN1_ITEM(POLICY_CONSTRAINTS)
+
+OPENSSL_EXPORT GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
+			       const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       int gen_type, char *value, int is_nc);
+
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       CONF_VALUE *cnf);
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
+				  const X509V3_EXT_METHOD *method,
+				  X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc);
+OPENSSL_EXPORT void X509V3_conf_free(CONF_VALUE *val);
+
+// X509V3_EXT_conf_nid contains the only exposed instance of an LHASH in our
+// public headers. The |conf| pointer must be NULL but cryptography.io wraps
+// this function so we cannot, yet, replace the type with a dummy struct.
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name, char *value);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section, STACK_OF(X509_EXTENSION) **sk);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509 *cert);
+OPENSSL_EXPORT int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_REQ *req);
+OPENSSL_EXPORT int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_CRL *crl);
+
+OPENSSL_EXPORT int X509V3_add_value_bool_nf(char *name, int asn1_bool,
+			     STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool);
+OPENSSL_EXPORT int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint);
+OPENSSL_EXPORT void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf);
+
+OPENSSL_EXPORT char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section);
+OPENSSL_EXPORT void X509V3_string_free(X509V3_CTX *ctx, char *str);
+OPENSSL_EXPORT void X509V3_section_free( X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section);
+OPENSSL_EXPORT void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subject,
+				 X509_REQ *req, X509_CRL *crl, int flags);
+
+OPENSSL_EXPORT int X509V3_add_value(const char *name, const char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_uchar(const char *name, const unsigned char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_bool(const char *name, int asn1_bool,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT char * i2s_ASN1_INTEGER(X509V3_EXT_METHOD *meth, ASN1_INTEGER *aint);
+OPENSSL_EXPORT ASN1_INTEGER * s2i_ASN1_INTEGER(X509V3_EXT_METHOD *meth, char *value);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT int X509V3_EXT_add(X509V3_EXT_METHOD *ext);
+OPENSSL_EXPORT int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist);
+OPENSSL_EXPORT int X509V3_EXT_add_alias(int nid_to, int nid_from);
+OPENSSL_EXPORT void X509V3_EXT_cleanup(void);
+
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext);
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid);
+OPENSSL_EXPORT int X509V3_add_standard_extensions(void);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line);
+OPENSSL_EXPORT void *X509V3_EXT_d2i(X509_EXTENSION *ext);
+OPENSSL_EXPORT void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int X509V3_EXT_free(int nid, void *ext_data);
+
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc);
+OPENSSL_EXPORT int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, int crit, unsigned long flags);
+
+OPENSSL_EXPORT void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
+								 int ml);
+OPENSSL_EXPORT int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent);
+OPENSSL_EXPORT int X509V3_EXT_print_fp(FILE *out, X509_EXTENSION *ext, int flag, int indent);
+
+OPENSSL_EXPORT int X509V3_extensions_print(BIO *out, const char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent);
+
+OPENSSL_EXPORT int X509_check_ca(X509 *x);
+OPENSSL_EXPORT int X509_check_purpose(X509 *x, int id, int ca);
+OPENSSL_EXPORT int X509_supported_extension(X509_EXTENSION *ex);
+OPENSSL_EXPORT int X509_PURPOSE_set(int *p, int purpose);
+OPENSSL_EXPORT int X509_check_issued(X509 *issuer, X509 *subject);
+OPENSSL_EXPORT int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid);
+
+OPENSSL_EXPORT uint32_t X509_get_extension_flags(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_key_usage(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_extended_key_usage(X509 *x);
+
+OPENSSL_EXPORT int X509_PURPOSE_get_count(void);
+OPENSSL_EXPORT X509_PURPOSE * X509_PURPOSE_get0(int idx);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_sname(char *sname);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_id(int id);
+OPENSSL_EXPORT int X509_PURPOSE_add(int id, int trust, int flags,
+			int (*ck)(const X509_PURPOSE *, const X509 *, int),
+				char *name, char *sname, void *arg);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_name(X509_PURPOSE *xp);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp);
+OPENSSL_EXPORT int X509_PURPOSE_get_trust(X509_PURPOSE *xp);
+OPENSSL_EXPORT void X509_PURPOSE_cleanup(void);
+OPENSSL_EXPORT int X509_PURPOSE_get_id(X509_PURPOSE *);
+
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x);
+OPENSSL_EXPORT void X509_email_free(STACK_OF(OPENSSL_STRING) *sk);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x);
+/* Flags for X509_check_* functions */
+
+/* Deprecated: this flag does nothing */
+#define X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT	0
+/* Disable wildcard matching for dnsName fields and common name. */
+#define X509_CHECK_FLAG_NO_WILDCARDS	0x2
+/* Wildcards must not match a partial label. */
+#define X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS 0x4
+/* Allow (non-partial) wildcards to match multiple labels. */
+#define X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS 0x8
+/* Constraint verifier subdomain patterns to match a single labels. */
+#define X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS 0x10
+/* Skip the subject common name fallback if subjectAltNames is missing. */
+#define X509_CHECK_FLAG_NEVER_CHECK_SUBJECT 0x20
+/*
+ * Match reference identifiers starting with "." to any sub-domain.
+ * This is a non-public flag, turned on implicitly when the subject
+ * reference identity is a DNS name.
+ */
+#define _X509_CHECK_FLAG_DOT_SUBDOMAINS 0x8000
+
+OPENSSL_EXPORT int X509_check_host(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags, char **peername);
+OPENSSL_EXPORT int X509_check_email(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags);
+
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc);
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc);
+OPENSSL_EXPORT int a2i_ipadd(unsigned char *ipout, const char *ipasc);
+OPENSSL_EXPORT int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
+						unsigned long chtype);
+
+OPENSSL_EXPORT void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent);
+DEFINE_STACK_OF(X509_POLICY_NODE)
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ACCESS_DESCRIPTION, ACCESS_DESCRIPTION_free)
+BORINGSSL_MAKE_DELETER(AUTHORITY_KEYID, AUTHORITY_KEYID_free)
+BORINGSSL_MAKE_DELETER(BASIC_CONSTRAINTS, BASIC_CONSTRAINTS_free)
+BORINGSSL_MAKE_DELETER(DIST_POINT, DIST_POINT_free)
+BORINGSSL_MAKE_DELETER(GENERAL_NAME, GENERAL_NAME_free)
+BORINGSSL_MAKE_DELETER(POLICYINFO, POLICYINFO_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif
+
+#define X509V3_R_BAD_IP_ADDRESS 100
+#define X509V3_R_BAD_OBJECT 101
+#define X509V3_R_BN_DEC2BN_ERROR 102
+#define X509V3_R_BN_TO_ASN1_INTEGER_ERROR 103
+#define X509V3_R_CANNOT_FIND_FREE_FUNCTION 104
+#define X509V3_R_DIRNAME_ERROR 105
+#define X509V3_R_DISTPOINT_ALREADY_SET 106
+#define X509V3_R_DUPLICATE_ZONE_ID 107
+#define X509V3_R_ERROR_CONVERTING_ZONE 108
+#define X509V3_R_ERROR_CREATING_EXTENSION 109
+#define X509V3_R_ERROR_IN_EXTENSION 110
+#define X509V3_R_EXPECTED_A_SECTION_NAME 111
+#define X509V3_R_EXTENSION_EXISTS 112
+#define X509V3_R_EXTENSION_NAME_ERROR 113
+#define X509V3_R_EXTENSION_NOT_FOUND 114
+#define X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED 115
+#define X509V3_R_EXTENSION_VALUE_ERROR 116
+#define X509V3_R_ILLEGAL_EMPTY_EXTENSION 117
+#define X509V3_R_ILLEGAL_HEX_DIGIT 118
+#define X509V3_R_INCORRECT_POLICY_SYNTAX_TAG 119
+#define X509V3_R_INVALID_BOOLEAN_STRING 120
+#define X509V3_R_INVALID_EXTENSION_STRING 121
+#define X509V3_R_INVALID_MULTIPLE_RDNS 122
+#define X509V3_R_INVALID_NAME 123
+#define X509V3_R_INVALID_NULL_ARGUMENT 124
+#define X509V3_R_INVALID_NULL_NAME 125
+#define X509V3_R_INVALID_NULL_VALUE 126
+#define X509V3_R_INVALID_NUMBER 127
+#define X509V3_R_INVALID_NUMBERS 128
+#define X509V3_R_INVALID_OBJECT_IDENTIFIER 129
+#define X509V3_R_INVALID_OPTION 130
+#define X509V3_R_INVALID_POLICY_IDENTIFIER 131
+#define X509V3_R_INVALID_PROXY_POLICY_SETTING 132
+#define X509V3_R_INVALID_PURPOSE 133
+#define X509V3_R_INVALID_SECTION 134
+#define X509V3_R_INVALID_SYNTAX 135
+#define X509V3_R_ISSUER_DECODE_ERROR 136
+#define X509V3_R_MISSING_VALUE 137
+#define X509V3_R_NEED_ORGANIZATION_AND_NUMBERS 138
+#define X509V3_R_NO_CONFIG_DATABASE 139
+#define X509V3_R_NO_ISSUER_CERTIFICATE 140
+#define X509V3_R_NO_ISSUER_DETAILS 141
+#define X509V3_R_NO_POLICY_IDENTIFIER 142
+#define X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED 143
+#define X509V3_R_NO_PUBLIC_KEY 144
+#define X509V3_R_NO_SUBJECT_DETAILS 145
+#define X509V3_R_ODD_NUMBER_OF_DIGITS 146
+#define X509V3_R_OPERATION_NOT_DEFINED 147
+#define X509V3_R_OTHERNAME_ERROR 148
+#define X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED 149
+#define X509V3_R_POLICY_PATH_LENGTH 150
+#define X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED 151
+#define X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY 152
+#define X509V3_R_SECTION_NOT_FOUND 153
+#define X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS 154
+#define X509V3_R_UNABLE_TO_GET_ISSUER_KEYID 155
+#define X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT 156
+#define X509V3_R_UNKNOWN_EXTENSION 157
+#define X509V3_R_UNKNOWN_EXTENSION_NAME 158
+#define X509V3_R_UNKNOWN_OPTION 159
+#define X509V3_R_UNSUPPORTED_OPTION 160
+#define X509V3_R_UNSUPPORTED_TYPE 161
+#define X509V3_R_USER_TOO_LONG 162
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.back
new file mode 100644
index 0000000..b5db715
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.back	
@@ -0,0 +1,831 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999. */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef HEADER_X509V3_H
+#define HEADER_X509V3_H
+
+#include <openssl/bio.h>
+#include <openssl/conf.h>
+#include <openssl/x509.h>
+#include <openssl/lhash.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/* Forward reference */
+struct v3_ext_method;
+struct v3_ext_ctx;
+
+/* Useful typedefs */
+
+typedef void * (*X509V3_EXT_NEW)(void);
+typedef void (*X509V3_EXT_FREE)(void *);
+typedef void * (*X509V3_EXT_D2I)(void *, const unsigned char ** , long);
+typedef int (*X509V3_EXT_I2D)(void *, unsigned char **);
+typedef STACK_OF(CONF_VALUE) *
+  (*X509V3_EXT_I2V)(const struct v3_ext_method *method, void *ext,
+		    STACK_OF(CONF_VALUE) *extlist);
+typedef void * (*X509V3_EXT_V2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx,
+				 STACK_OF(CONF_VALUE) *values);
+typedef char * (*X509V3_EXT_I2S)(const struct v3_ext_method *method, void *ext);
+typedef void * (*X509V3_EXT_S2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+typedef int (*X509V3_EXT_I2R)(const struct v3_ext_method *method, void *ext,
+			      BIO *out, int indent);
+typedef void * (*X509V3_EXT_R2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+
+/* V3 extension structure */
+
+struct v3_ext_method {
+int ext_nid;
+int ext_flags;
+/* If this is set the following four fields are ignored */
+ASN1_ITEM_EXP *it;
+/* Old style ASN1 calls */
+X509V3_EXT_NEW ext_new;
+X509V3_EXT_FREE ext_free;
+X509V3_EXT_D2I d2i;
+X509V3_EXT_I2D i2d;
+
+/* The following pair is used for string extensions */
+X509V3_EXT_I2S i2s;
+X509V3_EXT_S2I s2i;
+
+/* The following pair is used for multi-valued extensions */
+X509V3_EXT_I2V i2v;
+X509V3_EXT_V2I v2i;
+
+/* The following are used for raw extensions */
+X509V3_EXT_I2R i2r;
+X509V3_EXT_R2I r2i;
+
+void *usr_data;	/* Any extension specific data */
+};
+
+typedef struct X509V3_CONF_METHOD_st {
+char * (*get_string)(void *db, char *section, char *value);
+STACK_OF(CONF_VALUE) * (*get_section)(void *db, char *section);
+void (*free_string)(void *db, char * string);
+void (*free_section)(void *db, STACK_OF(CONF_VALUE) *section);
+} X509V3_CONF_METHOD;
+
+/* Context specific info */
+struct v3_ext_ctx {
+#define CTX_TEST 0x1
+int flags;
+X509 *issuer_cert;
+X509 *subject_cert;
+X509_REQ *subject_req;
+X509_CRL *crl;
+const X509V3_CONF_METHOD *db_meth;
+void *db;
+/* Maybe more here */
+};
+
+typedef struct v3_ext_method X509V3_EXT_METHOD;
+
+DEFINE_STACK_OF(X509V3_EXT_METHOD)
+
+/* ext_flags values */
+#define X509V3_EXT_DYNAMIC	0x1
+#define X509V3_EXT_CTX_DEP	0x2
+#define X509V3_EXT_MULTILINE	0x4
+
+typedef BIT_STRING_BITNAME ENUMERATED_NAMES;
+
+struct BASIC_CONSTRAINTS_st {
+int ca;
+ASN1_INTEGER *pathlen;
+};
+
+
+typedef struct PKEY_USAGE_PERIOD_st {
+ASN1_GENERALIZEDTIME *notBefore;
+ASN1_GENERALIZEDTIME *notAfter;
+} PKEY_USAGE_PERIOD;
+
+typedef struct otherName_st {
+ASN1_OBJECT *type_id;
+ASN1_TYPE *value;
+} OTHERNAME;
+
+typedef struct EDIPartyName_st {
+	ASN1_STRING *nameAssigner;
+	ASN1_STRING *partyName;
+} EDIPARTYNAME;
+
+typedef struct GENERAL_NAME_st {
+
+#define GEN_OTHERNAME	0
+#define GEN_EMAIL	1
+#define GEN_DNS		2
+#define GEN_X400	3
+#define GEN_DIRNAME	4
+#define GEN_EDIPARTY	5
+#define GEN_URI		6
+#define GEN_IPADD	7
+#define GEN_RID		8
+
+int type;
+union {
+	char *ptr;
+	OTHERNAME *otherName; /* otherName */
+	ASN1_IA5STRING *rfc822Name;
+	ASN1_IA5STRING *dNSName;
+	ASN1_TYPE *x400Address;
+	X509_NAME *directoryName;
+	EDIPARTYNAME *ediPartyName;
+	ASN1_IA5STRING *uniformResourceIdentifier;
+	ASN1_OCTET_STRING *iPAddress;
+	ASN1_OBJECT *registeredID;
+
+	/* Old names */
+	ASN1_OCTET_STRING *ip; /* iPAddress */
+	X509_NAME *dirn;		/* dirn */
+	ASN1_IA5STRING *ia5;/* rfc822Name, dNSName, uniformResourceIdentifier */
+	ASN1_OBJECT *rid; /* registeredID */
+	ASN1_TYPE *other; /* x400Address */
+} d;
+} GENERAL_NAME;
+
+DEFINE_STACK_OF(GENERAL_NAME)
+DECLARE_ASN1_SET_OF(GENERAL_NAME)
+
+typedef STACK_OF(GENERAL_NAME) GENERAL_NAMES;
+
+DEFINE_STACK_OF(GENERAL_NAMES)
+
+typedef struct ACCESS_DESCRIPTION_st {
+	ASN1_OBJECT *method;
+	GENERAL_NAME *location;
+} ACCESS_DESCRIPTION;
+
+DEFINE_STACK_OF(ACCESS_DESCRIPTION)
+DECLARE_ASN1_SET_OF(ACCESS_DESCRIPTION)
+
+typedef STACK_OF(ACCESS_DESCRIPTION) AUTHORITY_INFO_ACCESS;
+
+typedef STACK_OF(ASN1_OBJECT) EXTENDED_KEY_USAGE;
+
+typedef struct DIST_POINT_NAME_st {
+int type;
+union {
+	GENERAL_NAMES *fullname;
+	STACK_OF(X509_NAME_ENTRY) *relativename;
+} name;
+/* If relativename then this contains the full distribution point name */
+X509_NAME *dpname;
+} DIST_POINT_NAME;
+/* All existing reasons */
+#define CRLDP_ALL_REASONS	0x807f
+
+#define CRL_REASON_NONE				(-1)
+#define CRL_REASON_UNSPECIFIED			0
+#define CRL_REASON_KEY_COMPROMISE		1
+#define CRL_REASON_CA_COMPROMISE		2
+#define CRL_REASON_AFFILIATION_CHANGED		3
+#define CRL_REASON_SUPERSEDED			4
+#define CRL_REASON_CESSATION_OF_OPERATION	5
+#define CRL_REASON_CERTIFICATE_HOLD		6
+#define CRL_REASON_REMOVE_FROM_CRL		8
+#define CRL_REASON_PRIVILEGE_WITHDRAWN		9
+#define CRL_REASON_AA_COMPROMISE		10
+
+struct DIST_POINT_st {
+DIST_POINT_NAME	*distpoint;
+ASN1_BIT_STRING *reasons;
+GENERAL_NAMES *CRLissuer;
+int dp_reasons;
+};
+
+typedef STACK_OF(DIST_POINT) CRL_DIST_POINTS;
+
+DEFINE_STACK_OF(DIST_POINT)
+DECLARE_ASN1_SET_OF(DIST_POINT)
+
+struct AUTHORITY_KEYID_st {
+ASN1_OCTET_STRING *keyid;
+GENERAL_NAMES *issuer;
+ASN1_INTEGER *serial;
+};
+
+/* Strong extranet structures */
+
+typedef struct SXNET_ID_st {
+	ASN1_INTEGER *zone;
+	ASN1_OCTET_STRING *user;
+} SXNETID;
+
+DEFINE_STACK_OF(SXNETID)
+DECLARE_ASN1_SET_OF(SXNETID)
+
+typedef struct SXNET_st {
+	ASN1_INTEGER *version;
+	STACK_OF(SXNETID) *ids;
+} SXNET;
+
+typedef struct NOTICEREF_st {
+	ASN1_STRING *organization;
+	STACK_OF(ASN1_INTEGER) *noticenos;
+} NOTICEREF;
+
+typedef struct USERNOTICE_st {
+	NOTICEREF *noticeref;
+	ASN1_STRING *exptext;
+} USERNOTICE;
+
+typedef struct POLICYQUALINFO_st {
+	ASN1_OBJECT *pqualid;
+	union {
+		ASN1_IA5STRING *cpsuri;
+		USERNOTICE *usernotice;
+		ASN1_TYPE *other;
+	} d;
+} POLICYQUALINFO;
+
+DEFINE_STACK_OF(POLICYQUALINFO)
+DECLARE_ASN1_SET_OF(POLICYQUALINFO)
+
+typedef struct POLICYINFO_st {
+	ASN1_OBJECT *policyid;
+	STACK_OF(POLICYQUALINFO) *qualifiers;
+} POLICYINFO;
+
+typedef STACK_OF(POLICYINFO) CERTIFICATEPOLICIES;
+
+DEFINE_STACK_OF(POLICYINFO)
+DECLARE_ASN1_SET_OF(POLICYINFO)
+
+typedef struct POLICY_MAPPING_st {
+	ASN1_OBJECT *issuerDomainPolicy;
+	ASN1_OBJECT *subjectDomainPolicy;
+} POLICY_MAPPING;
+
+DEFINE_STACK_OF(POLICY_MAPPING)
+
+typedef STACK_OF(POLICY_MAPPING) POLICY_MAPPINGS;
+
+typedef struct GENERAL_SUBTREE_st {
+	GENERAL_NAME *base;
+	ASN1_INTEGER *minimum;
+	ASN1_INTEGER *maximum;
+} GENERAL_SUBTREE;
+
+DEFINE_STACK_OF(GENERAL_SUBTREE)
+
+struct NAME_CONSTRAINTS_st {
+	STACK_OF(GENERAL_SUBTREE) *permittedSubtrees;
+	STACK_OF(GENERAL_SUBTREE) *excludedSubtrees;
+};
+
+typedef struct POLICY_CONSTRAINTS_st {
+	ASN1_INTEGER *requireExplicitPolicy;
+	ASN1_INTEGER *inhibitPolicyMapping;
+} POLICY_CONSTRAINTS;
+
+/* Proxy certificate structures, see RFC 3820 */
+typedef struct PROXY_POLICY_st
+	{
+	ASN1_OBJECT *policyLanguage;
+	ASN1_OCTET_STRING *policy;
+	} PROXY_POLICY;
+
+typedef struct PROXY_CERT_INFO_EXTENSION_st
+	{
+	ASN1_INTEGER *pcPathLengthConstraint;
+	PROXY_POLICY *proxyPolicy;
+	} PROXY_CERT_INFO_EXTENSION;
+
+DECLARE_ASN1_FUNCTIONS(PROXY_POLICY)
+DECLARE_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
+
+struct ISSUING_DIST_POINT_st
+	{
+	DIST_POINT_NAME *distpoint;
+	int onlyuser;
+	int onlyCA;
+	ASN1_BIT_STRING *onlysomereasons;
+	int indirectCRL;
+	int onlyattr;
+	};
+
+/* Values in idp_flags field */
+/* IDP present */
+#define	IDP_PRESENT	0x1
+/* IDP values inconsistent */
+#define IDP_INVALID	0x2
+/* onlyuser true */
+#define	IDP_ONLYUSER	0x4
+/* onlyCA true */
+#define	IDP_ONLYCA	0x8
+/* onlyattr true */
+#define IDP_ONLYATTR	0x10
+/* indirectCRL true */
+#define IDP_INDIRECT	0x20
+/* onlysomereasons present */
+#define IDP_REASONS	0x40
+
+#define X509V3_conf_err(val) ERR_add_error_data(6, "section:", (val)->section, \
+",name:", (val)->name, ",value:", (val)->value);
+
+#define X509V3_set_ctx_test(ctx) \
+			X509V3_set_ctx(ctx, NULL, NULL, NULL, NULL, CTX_TEST)
+#define X509V3_set_ctx_nodb(ctx) (ctx)->db = NULL;
+
+#define EXT_BITSTRING(nid, table) { nid, 0, ASN1_ITEM_ref(ASN1_BIT_STRING), \
+			0,0,0,0, \
+			0,0, \
+			(X509V3_EXT_I2V)i2v_ASN1_BIT_STRING, \
+			(X509V3_EXT_V2I)v2i_ASN1_BIT_STRING, \
+			NULL, NULL, \
+			(void *)(table)}
+
+#define EXT_IA5STRING(nid) { nid, 0, ASN1_ITEM_ref(ASN1_IA5STRING), \
+			0,0,0,0, \
+			(X509V3_EXT_I2S)i2s_ASN1_IA5STRING, \
+			(X509V3_EXT_S2I)s2i_ASN1_IA5STRING, \
+			0,0,0,0, \
+			NULL}
+
+#define EXT_END { -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+
+/* X509_PURPOSE stuff */
+
+#define EXFLAG_BCONS		0x1
+#define EXFLAG_KUSAGE		0x2
+#define EXFLAG_XKUSAGE		0x4
+#define EXFLAG_NSCERT		0x8
+
+#define EXFLAG_CA		0x10
+/* Really self issued not necessarily self signed */
+#define EXFLAG_SI		0x20
+#define EXFLAG_V1		0x40
+#define EXFLAG_INVALID		0x80
+#define EXFLAG_SET		0x100
+#define EXFLAG_CRITICAL		0x200
+#define EXFLAG_PROXY		0x400
+
+#define EXFLAG_INVALID_POLICY	0x800
+#define EXFLAG_FRESHEST		0x1000
+/* Self signed */
+#define EXFLAG_SS		0x2000
+
+#define KU_DIGITAL_SIGNATURE	0x0080
+#define KU_NON_REPUDIATION	0x0040
+#define KU_KEY_ENCIPHERMENT	0x0020
+#define KU_DATA_ENCIPHERMENT	0x0010
+#define KU_KEY_AGREEMENT	0x0008
+#define KU_KEY_CERT_SIGN	0x0004
+#define KU_CRL_SIGN		0x0002
+#define KU_ENCIPHER_ONLY	0x0001
+#define KU_DECIPHER_ONLY	0x8000
+
+#define NS_SSL_CLIENT		0x80
+#define NS_SSL_SERVER		0x40
+#define NS_SMIME		0x20
+#define NS_OBJSIGN		0x10
+#define NS_SSL_CA		0x04
+#define NS_SMIME_CA		0x02
+#define NS_OBJSIGN_CA		0x01
+#define NS_ANY_CA		(NS_SSL_CA|NS_SMIME_CA|NS_OBJSIGN_CA)
+
+#define XKU_SSL_SERVER		0x1	
+#define XKU_SSL_CLIENT		0x2
+#define XKU_SMIME		0x4
+#define XKU_CODE_SIGN		0x8
+#define XKU_SGC			0x10
+#define XKU_OCSP_SIGN		0x20
+#define XKU_TIMESTAMP		0x40
+#define XKU_DVCS		0x80
+#define XKU_ANYEKU		0x100
+
+#define X509_PURPOSE_DYNAMIC	0x1
+#define X509_PURPOSE_DYNAMIC_NAME	0x2
+
+typedef struct x509_purpose_st {
+	int purpose;
+	int trust;		/* Default trust ID */
+	int flags;
+	int (*check_purpose)(const struct x509_purpose_st *,
+				const X509 *, int);
+	char *name;
+	char *sname;
+	void *usr_data;
+} X509_PURPOSE;
+
+#define X509_PURPOSE_SSL_CLIENT		1
+#define X509_PURPOSE_SSL_SERVER		2
+#define X509_PURPOSE_NS_SSL_SERVER	3
+#define X509_PURPOSE_SMIME_SIGN		4
+#define X509_PURPOSE_SMIME_ENCRYPT	5
+#define X509_PURPOSE_CRL_SIGN		6
+#define X509_PURPOSE_ANY		7
+#define X509_PURPOSE_OCSP_HELPER	8
+#define X509_PURPOSE_TIMESTAMP_SIGN	9
+
+#define X509_PURPOSE_MIN		1
+#define X509_PURPOSE_MAX		9
+
+/* Flags for X509V3_EXT_print() */
+
+#define X509V3_EXT_UNKNOWN_MASK		(0xfL << 16)
+/* Return error for unknown extensions */
+#define X509V3_EXT_DEFAULT		0
+/* Print error for unknown extensions */
+#define X509V3_EXT_ERROR_UNKNOWN	(1L << 16)
+/* ASN1 parse unknown extensions */
+#define X509V3_EXT_PARSE_UNKNOWN	(2L << 16)
+/* BIO_dump unknown extensions */
+#define X509V3_EXT_DUMP_UNKNOWN		(3L << 16)
+
+/* Flags for X509V3_add1_i2d */
+
+#define X509V3_ADD_OP_MASK		0xfL
+#define X509V3_ADD_DEFAULT		0L
+#define X509V3_ADD_APPEND		1L
+#define X509V3_ADD_REPLACE		2L
+#define X509V3_ADD_REPLACE_EXISTING	3L
+#define X509V3_ADD_KEEP_EXISTING	4L
+#define X509V3_ADD_DELETE		5L
+#define X509V3_ADD_SILENT		0x10
+
+DEFINE_STACK_OF(X509_PURPOSE)
+
+DECLARE_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+DECLARE_ASN1_FUNCTIONS(SXNET)
+DECLARE_ASN1_FUNCTIONS(SXNETID)
+
+int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen); 
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user, int userlen); 
+int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *izone, char *user, int userlen); 
+
+ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone);
+ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone);
+ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone);
+
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_KEYID)
+
+DECLARE_ASN1_FUNCTIONS(PKEY_USAGE_PERIOD)
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAME)
+OPENSSL_EXPORT GENERAL_NAME *GENERAL_NAME_dup(GENERAL_NAME *a);
+OPENSSL_EXPORT int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b);
+
+
+
+OPENSSL_EXPORT ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				ASN1_BIT_STRING *bits,
+				STACK_OF(CONF_VALUE) *extlist);
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret);
+OPENSSL_EXPORT int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen);
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAMES)
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
+		GENERAL_NAMES *gen, STACK_OF(CONF_VALUE) *extlist);
+OPENSSL_EXPORT GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
+				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+
+DECLARE_ASN1_FUNCTIONS(OTHERNAME)
+DECLARE_ASN1_FUNCTIONS(EDIPARTYNAME)
+OPENSSL_EXPORT int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b);
+OPENSSL_EXPORT void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value);
+OPENSSL_EXPORT void *GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype);
+OPENSSL_EXPORT int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
+				ASN1_OBJECT *oid, ASN1_TYPE *value);
+OPENSSL_EXPORT int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen, 
+				ASN1_OBJECT **poid, ASN1_TYPE **pvalue);
+
+OPENSSL_EXPORT char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *ia5);
+OPENSSL_EXPORT ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
+
+DECLARE_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
+OPENSSL_EXPORT int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION* a);
+
+DECLARE_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
+DECLARE_ASN1_FUNCTIONS(POLICYINFO)
+DECLARE_ASN1_FUNCTIONS(POLICYQUALINFO)
+DECLARE_ASN1_FUNCTIONS(USERNOTICE)
+DECLARE_ASN1_FUNCTIONS(NOTICEREF)
+
+DECLARE_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT_NAME)
+DECLARE_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+OPENSSL_EXPORT int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname);
+
+OPENSSL_EXPORT int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc);
+
+DECLARE_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
+
+DECLARE_ASN1_ITEM(POLICY_MAPPING)
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
+DECLARE_ASN1_ITEM(POLICY_MAPPINGS)
+
+DECLARE_ASN1_ITEM(GENERAL_SUBTREE)
+DECLARE_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
+
+DECLARE_ASN1_ITEM(NAME_CONSTRAINTS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
+DECLARE_ASN1_ITEM(POLICY_CONSTRAINTS)
+
+OPENSSL_EXPORT GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
+			       const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       int gen_type, char *value, int is_nc);
+
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       CONF_VALUE *cnf);
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
+				  const X509V3_EXT_METHOD *method,
+				  X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc);
+OPENSSL_EXPORT void X509V3_conf_free(CONF_VALUE *val);
+
+// X509V3_EXT_conf_nid contains the only exposed instance of an LHASH in our
+// public headers. The |conf| pointer must be NULL but cryptography.io wraps
+// this function so we cannot, yet, replace the type with a dummy struct.
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name, char *value);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section, STACK_OF(X509_EXTENSION) **sk);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509 *cert);
+OPENSSL_EXPORT int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_REQ *req);
+OPENSSL_EXPORT int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_CRL *crl);
+
+OPENSSL_EXPORT int X509V3_add_value_bool_nf(char *name, int asn1_bool,
+			     STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool);
+OPENSSL_EXPORT int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint);
+OPENSSL_EXPORT void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf);
+
+OPENSSL_EXPORT char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section);
+OPENSSL_EXPORT void X509V3_string_free(X509V3_CTX *ctx, char *str);
+OPENSSL_EXPORT void X509V3_section_free( X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section);
+OPENSSL_EXPORT void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subject,
+				 X509_REQ *req, X509_CRL *crl, int flags);
+
+OPENSSL_EXPORT int X509V3_add_value(const char *name, const char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_uchar(const char *name, const unsigned char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_bool(const char *name, int asn1_bool,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT char * i2s_ASN1_INTEGER(X509V3_EXT_METHOD *meth, ASN1_INTEGER *aint);
+OPENSSL_EXPORT ASN1_INTEGER * s2i_ASN1_INTEGER(X509V3_EXT_METHOD *meth, char *value);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT int X509V3_EXT_add(X509V3_EXT_METHOD *ext);
+OPENSSL_EXPORT int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist);
+OPENSSL_EXPORT int X509V3_EXT_add_alias(int nid_to, int nid_from);
+OPENSSL_EXPORT void X509V3_EXT_cleanup(void);
+
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext);
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid);
+OPENSSL_EXPORT int X509V3_add_standard_extensions(void);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line);
+OPENSSL_EXPORT void *X509V3_EXT_d2i(X509_EXTENSION *ext);
+OPENSSL_EXPORT void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int X509V3_EXT_free(int nid, void *ext_data);
+
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc);
+OPENSSL_EXPORT int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, int crit, unsigned long flags);
+
+OPENSSL_EXPORT void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
+								 int ml);
+OPENSSL_EXPORT int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent);
+OPENSSL_EXPORT int X509V3_EXT_print_fp(FILE *out, X509_EXTENSION *ext, int flag, int indent);
+
+OPENSSL_EXPORT int X509V3_extensions_print(BIO *out, const char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent);
+
+OPENSSL_EXPORT int X509_check_ca(X509 *x);
+OPENSSL_EXPORT int X509_check_purpose(X509 *x, int id, int ca);
+OPENSSL_EXPORT int X509_supported_extension(X509_EXTENSION *ex);
+OPENSSL_EXPORT int X509_PURPOSE_set(int *p, int purpose);
+OPENSSL_EXPORT int X509_check_issued(X509 *issuer, X509 *subject);
+OPENSSL_EXPORT int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid);
+
+OPENSSL_EXPORT uint32_t X509_get_extension_flags(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_key_usage(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_extended_key_usage(X509 *x);
+
+OPENSSL_EXPORT int X509_PURPOSE_get_count(void);
+OPENSSL_EXPORT X509_PURPOSE * X509_PURPOSE_get0(int idx);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_sname(char *sname);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_id(int id);
+OPENSSL_EXPORT int X509_PURPOSE_add(int id, int trust, int flags,
+			int (*ck)(const X509_PURPOSE *, const X509 *, int),
+				char *name, char *sname, void *arg);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_name(X509_PURPOSE *xp);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp);
+OPENSSL_EXPORT int X509_PURPOSE_get_trust(X509_PURPOSE *xp);
+OPENSSL_EXPORT void X509_PURPOSE_cleanup(void);
+OPENSSL_EXPORT int X509_PURPOSE_get_id(X509_PURPOSE *);
+
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x);
+OPENSSL_EXPORT void X509_email_free(STACK_OF(OPENSSL_STRING) *sk);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x);
+/* Flags for X509_check_* functions */
+
+/* Deprecated: this flag does nothing */
+#define X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT	0
+/* Disable wildcard matching for dnsName fields and common name. */
+#define X509_CHECK_FLAG_NO_WILDCARDS	0x2
+/* Wildcards must not match a partial label. */
+#define X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS 0x4
+/* Allow (non-partial) wildcards to match multiple labels. */
+#define X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS 0x8
+/* Constraint verifier subdomain patterns to match a single labels. */
+#define X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS 0x10
+/* Skip the subject common name fallback if subjectAltNames is missing. */
+#define X509_CHECK_FLAG_NEVER_CHECK_SUBJECT 0x20
+/*
+ * Match reference identifiers starting with "." to any sub-domain.
+ * This is a non-public flag, turned on implicitly when the subject
+ * reference identity is a DNS name.
+ */
+#define _X509_CHECK_FLAG_DOT_SUBDOMAINS 0x8000
+
+OPENSSL_EXPORT int X509_check_host(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags, char **peername);
+OPENSSL_EXPORT int X509_check_email(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags);
+
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc);
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc);
+OPENSSL_EXPORT int a2i_ipadd(unsigned char *ipout, const char *ipasc);
+OPENSSL_EXPORT int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
+						unsigned long chtype);
+
+OPENSSL_EXPORT void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent);
+DEFINE_STACK_OF(X509_POLICY_NODE)
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ACCESS_DESCRIPTION, ACCESS_DESCRIPTION_free)
+BORINGSSL_MAKE_DELETER(AUTHORITY_KEYID, AUTHORITY_KEYID_free)
+BORINGSSL_MAKE_DELETER(BASIC_CONSTRAINTS, BASIC_CONSTRAINTS_free)
+BORINGSSL_MAKE_DELETER(DIST_POINT, DIST_POINT_free)
+BORINGSSL_MAKE_DELETER(GENERAL_NAME, GENERAL_NAME_free)
+BORINGSSL_MAKE_DELETER(POLICYINFO, POLICYINFO_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif
+
+#define X509V3_R_BAD_IP_ADDRESS 100
+#define X509V3_R_BAD_OBJECT 101
+#define X509V3_R_BN_DEC2BN_ERROR 102
+#define X509V3_R_BN_TO_ASN1_INTEGER_ERROR 103
+#define X509V3_R_CANNOT_FIND_FREE_FUNCTION 104
+#define X509V3_R_DIRNAME_ERROR 105
+#define X509V3_R_DISTPOINT_ALREADY_SET 106
+#define X509V3_R_DUPLICATE_ZONE_ID 107
+#define X509V3_R_ERROR_CONVERTING_ZONE 108
+#define X509V3_R_ERROR_CREATING_EXTENSION 109
+#define X509V3_R_ERROR_IN_EXTENSION 110
+#define X509V3_R_EXPECTED_A_SECTION_NAME 111
+#define X509V3_R_EXTENSION_EXISTS 112
+#define X509V3_R_EXTENSION_NAME_ERROR 113
+#define X509V3_R_EXTENSION_NOT_FOUND 114
+#define X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED 115
+#define X509V3_R_EXTENSION_VALUE_ERROR 116
+#define X509V3_R_ILLEGAL_EMPTY_EXTENSION 117
+#define X509V3_R_ILLEGAL_HEX_DIGIT 118
+#define X509V3_R_INCORRECT_POLICY_SYNTAX_TAG 119
+#define X509V3_R_INVALID_BOOLEAN_STRING 120
+#define X509V3_R_INVALID_EXTENSION_STRING 121
+#define X509V3_R_INVALID_MULTIPLE_RDNS 122
+#define X509V3_R_INVALID_NAME 123
+#define X509V3_R_INVALID_NULL_ARGUMENT 124
+#define X509V3_R_INVALID_NULL_NAME 125
+#define X509V3_R_INVALID_NULL_VALUE 126
+#define X509V3_R_INVALID_NUMBER 127
+#define X509V3_R_INVALID_NUMBERS 128
+#define X509V3_R_INVALID_OBJECT_IDENTIFIER 129
+#define X509V3_R_INVALID_OPTION 130
+#define X509V3_R_INVALID_POLICY_IDENTIFIER 131
+#define X509V3_R_INVALID_PROXY_POLICY_SETTING 132
+#define X509V3_R_INVALID_PURPOSE 133
+#define X509V3_R_INVALID_SECTION 134
+#define X509V3_R_INVALID_SYNTAX 135
+#define X509V3_R_ISSUER_DECODE_ERROR 136
+#define X509V3_R_MISSING_VALUE 137
+#define X509V3_R_NEED_ORGANIZATION_AND_NUMBERS 138
+#define X509V3_R_NO_CONFIG_DATABASE 139
+#define X509V3_R_NO_ISSUER_CERTIFICATE 140
+#define X509V3_R_NO_ISSUER_DETAILS 141
+#define X509V3_R_NO_POLICY_IDENTIFIER 142
+#define X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED 143
+#define X509V3_R_NO_PUBLIC_KEY 144
+#define X509V3_R_NO_SUBJECT_DETAILS 145
+#define X509V3_R_ODD_NUMBER_OF_DIGITS 146
+#define X509V3_R_OPERATION_NOT_DEFINED 147
+#define X509V3_R_OTHERNAME_ERROR 148
+#define X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED 149
+#define X509V3_R_POLICY_PATH_LENGTH 150
+#define X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED 151
+#define X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY 152
+#define X509V3_R_SECTION_NOT_FOUND 153
+#define X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS 154
+#define X509V3_R_UNABLE_TO_GET_ISSUER_KEYID 155
+#define X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT 156
+#define X509V3_R_UNKNOWN_EXTENSION 157
+#define X509V3_R_UNKNOWN_EXTENSION_NAME 158
+#define X509V3_R_UNKNOWN_OPTION 159
+#define X509V3_R_UNSUPPORTED_OPTION 160
+#define X509V3_R_UNSUPPORTED_TYPE 161
+#define X509V3_R_USER_TOO_LONG 162
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.grpc_back
new file mode 100644
index 0000000..b5db715
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/include/openssl/x509v3.h.grpc_back	
@@ -0,0 +1,831 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999. */
+/* ====================================================================
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef HEADER_X509V3_H
+#define HEADER_X509V3_H
+
+#include <openssl/bio.h>
+#include <openssl/conf.h>
+#include <openssl/x509.h>
+#include <openssl/lhash.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Legacy X.509 library.
+ *
+ * This header is part of OpenSSL's X.509 implementation. It is retained for
+ * compatibility but otherwise underdocumented and not actively maintained. In
+ * the future, a replacement library will be available. Meanwhile, minimize
+ * dependencies on this header where possible. */
+
+
+/* Forward reference */
+struct v3_ext_method;
+struct v3_ext_ctx;
+
+/* Useful typedefs */
+
+typedef void * (*X509V3_EXT_NEW)(void);
+typedef void (*X509V3_EXT_FREE)(void *);
+typedef void * (*X509V3_EXT_D2I)(void *, const unsigned char ** , long);
+typedef int (*X509V3_EXT_I2D)(void *, unsigned char **);
+typedef STACK_OF(CONF_VALUE) *
+  (*X509V3_EXT_I2V)(const struct v3_ext_method *method, void *ext,
+		    STACK_OF(CONF_VALUE) *extlist);
+typedef void * (*X509V3_EXT_V2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx,
+				 STACK_OF(CONF_VALUE) *values);
+typedef char * (*X509V3_EXT_I2S)(const struct v3_ext_method *method, void *ext);
+typedef void * (*X509V3_EXT_S2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+typedef int (*X509V3_EXT_I2R)(const struct v3_ext_method *method, void *ext,
+			      BIO *out, int indent);
+typedef void * (*X509V3_EXT_R2I)(const struct v3_ext_method *method,
+				 struct v3_ext_ctx *ctx, const char *str);
+
+/* V3 extension structure */
+
+struct v3_ext_method {
+int ext_nid;
+int ext_flags;
+/* If this is set the following four fields are ignored */
+ASN1_ITEM_EXP *it;
+/* Old style ASN1 calls */
+X509V3_EXT_NEW ext_new;
+X509V3_EXT_FREE ext_free;
+X509V3_EXT_D2I d2i;
+X509V3_EXT_I2D i2d;
+
+/* The following pair is used for string extensions */
+X509V3_EXT_I2S i2s;
+X509V3_EXT_S2I s2i;
+
+/* The following pair is used for multi-valued extensions */
+X509V3_EXT_I2V i2v;
+X509V3_EXT_V2I v2i;
+
+/* The following are used for raw extensions */
+X509V3_EXT_I2R i2r;
+X509V3_EXT_R2I r2i;
+
+void *usr_data;	/* Any extension specific data */
+};
+
+typedef struct X509V3_CONF_METHOD_st {
+char * (*get_string)(void *db, char *section, char *value);
+STACK_OF(CONF_VALUE) * (*get_section)(void *db, char *section);
+void (*free_string)(void *db, char * string);
+void (*free_section)(void *db, STACK_OF(CONF_VALUE) *section);
+} X509V3_CONF_METHOD;
+
+/* Context specific info */
+struct v3_ext_ctx {
+#define CTX_TEST 0x1
+int flags;
+X509 *issuer_cert;
+X509 *subject_cert;
+X509_REQ *subject_req;
+X509_CRL *crl;
+const X509V3_CONF_METHOD *db_meth;
+void *db;
+/* Maybe more here */
+};
+
+typedef struct v3_ext_method X509V3_EXT_METHOD;
+
+DEFINE_STACK_OF(X509V3_EXT_METHOD)
+
+/* ext_flags values */
+#define X509V3_EXT_DYNAMIC	0x1
+#define X509V3_EXT_CTX_DEP	0x2
+#define X509V3_EXT_MULTILINE	0x4
+
+typedef BIT_STRING_BITNAME ENUMERATED_NAMES;
+
+struct BASIC_CONSTRAINTS_st {
+int ca;
+ASN1_INTEGER *pathlen;
+};
+
+
+typedef struct PKEY_USAGE_PERIOD_st {
+ASN1_GENERALIZEDTIME *notBefore;
+ASN1_GENERALIZEDTIME *notAfter;
+} PKEY_USAGE_PERIOD;
+
+typedef struct otherName_st {
+ASN1_OBJECT *type_id;
+ASN1_TYPE *value;
+} OTHERNAME;
+
+typedef struct EDIPartyName_st {
+	ASN1_STRING *nameAssigner;
+	ASN1_STRING *partyName;
+} EDIPARTYNAME;
+
+typedef struct GENERAL_NAME_st {
+
+#define GEN_OTHERNAME	0
+#define GEN_EMAIL	1
+#define GEN_DNS		2
+#define GEN_X400	3
+#define GEN_DIRNAME	4
+#define GEN_EDIPARTY	5
+#define GEN_URI		6
+#define GEN_IPADD	7
+#define GEN_RID		8
+
+int type;
+union {
+	char *ptr;
+	OTHERNAME *otherName; /* otherName */
+	ASN1_IA5STRING *rfc822Name;
+	ASN1_IA5STRING *dNSName;
+	ASN1_TYPE *x400Address;
+	X509_NAME *directoryName;
+	EDIPARTYNAME *ediPartyName;
+	ASN1_IA5STRING *uniformResourceIdentifier;
+	ASN1_OCTET_STRING *iPAddress;
+	ASN1_OBJECT *registeredID;
+
+	/* Old names */
+	ASN1_OCTET_STRING *ip; /* iPAddress */
+	X509_NAME *dirn;		/* dirn */
+	ASN1_IA5STRING *ia5;/* rfc822Name, dNSName, uniformResourceIdentifier */
+	ASN1_OBJECT *rid; /* registeredID */
+	ASN1_TYPE *other; /* x400Address */
+} d;
+} GENERAL_NAME;
+
+DEFINE_STACK_OF(GENERAL_NAME)
+DECLARE_ASN1_SET_OF(GENERAL_NAME)
+
+typedef STACK_OF(GENERAL_NAME) GENERAL_NAMES;
+
+DEFINE_STACK_OF(GENERAL_NAMES)
+
+typedef struct ACCESS_DESCRIPTION_st {
+	ASN1_OBJECT *method;
+	GENERAL_NAME *location;
+} ACCESS_DESCRIPTION;
+
+DEFINE_STACK_OF(ACCESS_DESCRIPTION)
+DECLARE_ASN1_SET_OF(ACCESS_DESCRIPTION)
+
+typedef STACK_OF(ACCESS_DESCRIPTION) AUTHORITY_INFO_ACCESS;
+
+typedef STACK_OF(ASN1_OBJECT) EXTENDED_KEY_USAGE;
+
+typedef struct DIST_POINT_NAME_st {
+int type;
+union {
+	GENERAL_NAMES *fullname;
+	STACK_OF(X509_NAME_ENTRY) *relativename;
+} name;
+/* If relativename then this contains the full distribution point name */
+X509_NAME *dpname;
+} DIST_POINT_NAME;
+/* All existing reasons */
+#define CRLDP_ALL_REASONS	0x807f
+
+#define CRL_REASON_NONE				(-1)
+#define CRL_REASON_UNSPECIFIED			0
+#define CRL_REASON_KEY_COMPROMISE		1
+#define CRL_REASON_CA_COMPROMISE		2
+#define CRL_REASON_AFFILIATION_CHANGED		3
+#define CRL_REASON_SUPERSEDED			4
+#define CRL_REASON_CESSATION_OF_OPERATION	5
+#define CRL_REASON_CERTIFICATE_HOLD		6
+#define CRL_REASON_REMOVE_FROM_CRL		8
+#define CRL_REASON_PRIVILEGE_WITHDRAWN		9
+#define CRL_REASON_AA_COMPROMISE		10
+
+struct DIST_POINT_st {
+DIST_POINT_NAME	*distpoint;
+ASN1_BIT_STRING *reasons;
+GENERAL_NAMES *CRLissuer;
+int dp_reasons;
+};
+
+typedef STACK_OF(DIST_POINT) CRL_DIST_POINTS;
+
+DEFINE_STACK_OF(DIST_POINT)
+DECLARE_ASN1_SET_OF(DIST_POINT)
+
+struct AUTHORITY_KEYID_st {
+ASN1_OCTET_STRING *keyid;
+GENERAL_NAMES *issuer;
+ASN1_INTEGER *serial;
+};
+
+/* Strong extranet structures */
+
+typedef struct SXNET_ID_st {
+	ASN1_INTEGER *zone;
+	ASN1_OCTET_STRING *user;
+} SXNETID;
+
+DEFINE_STACK_OF(SXNETID)
+DECLARE_ASN1_SET_OF(SXNETID)
+
+typedef struct SXNET_st {
+	ASN1_INTEGER *version;
+	STACK_OF(SXNETID) *ids;
+} SXNET;
+
+typedef struct NOTICEREF_st {
+	ASN1_STRING *organization;
+	STACK_OF(ASN1_INTEGER) *noticenos;
+} NOTICEREF;
+
+typedef struct USERNOTICE_st {
+	NOTICEREF *noticeref;
+	ASN1_STRING *exptext;
+} USERNOTICE;
+
+typedef struct POLICYQUALINFO_st {
+	ASN1_OBJECT *pqualid;
+	union {
+		ASN1_IA5STRING *cpsuri;
+		USERNOTICE *usernotice;
+		ASN1_TYPE *other;
+	} d;
+} POLICYQUALINFO;
+
+DEFINE_STACK_OF(POLICYQUALINFO)
+DECLARE_ASN1_SET_OF(POLICYQUALINFO)
+
+typedef struct POLICYINFO_st {
+	ASN1_OBJECT *policyid;
+	STACK_OF(POLICYQUALINFO) *qualifiers;
+} POLICYINFO;
+
+typedef STACK_OF(POLICYINFO) CERTIFICATEPOLICIES;
+
+DEFINE_STACK_OF(POLICYINFO)
+DECLARE_ASN1_SET_OF(POLICYINFO)
+
+typedef struct POLICY_MAPPING_st {
+	ASN1_OBJECT *issuerDomainPolicy;
+	ASN1_OBJECT *subjectDomainPolicy;
+} POLICY_MAPPING;
+
+DEFINE_STACK_OF(POLICY_MAPPING)
+
+typedef STACK_OF(POLICY_MAPPING) POLICY_MAPPINGS;
+
+typedef struct GENERAL_SUBTREE_st {
+	GENERAL_NAME *base;
+	ASN1_INTEGER *minimum;
+	ASN1_INTEGER *maximum;
+} GENERAL_SUBTREE;
+
+DEFINE_STACK_OF(GENERAL_SUBTREE)
+
+struct NAME_CONSTRAINTS_st {
+	STACK_OF(GENERAL_SUBTREE) *permittedSubtrees;
+	STACK_OF(GENERAL_SUBTREE) *excludedSubtrees;
+};
+
+typedef struct POLICY_CONSTRAINTS_st {
+	ASN1_INTEGER *requireExplicitPolicy;
+	ASN1_INTEGER *inhibitPolicyMapping;
+} POLICY_CONSTRAINTS;
+
+/* Proxy certificate structures, see RFC 3820 */
+typedef struct PROXY_POLICY_st
+	{
+	ASN1_OBJECT *policyLanguage;
+	ASN1_OCTET_STRING *policy;
+	} PROXY_POLICY;
+
+typedef struct PROXY_CERT_INFO_EXTENSION_st
+	{
+	ASN1_INTEGER *pcPathLengthConstraint;
+	PROXY_POLICY *proxyPolicy;
+	} PROXY_CERT_INFO_EXTENSION;
+
+DECLARE_ASN1_FUNCTIONS(PROXY_POLICY)
+DECLARE_ASN1_FUNCTIONS(PROXY_CERT_INFO_EXTENSION)
+
+struct ISSUING_DIST_POINT_st
+	{
+	DIST_POINT_NAME *distpoint;
+	int onlyuser;
+	int onlyCA;
+	ASN1_BIT_STRING *onlysomereasons;
+	int indirectCRL;
+	int onlyattr;
+	};
+
+/* Values in idp_flags field */
+/* IDP present */
+#define	IDP_PRESENT	0x1
+/* IDP values inconsistent */
+#define IDP_INVALID	0x2
+/* onlyuser true */
+#define	IDP_ONLYUSER	0x4
+/* onlyCA true */
+#define	IDP_ONLYCA	0x8
+/* onlyattr true */
+#define IDP_ONLYATTR	0x10
+/* indirectCRL true */
+#define IDP_INDIRECT	0x20
+/* onlysomereasons present */
+#define IDP_REASONS	0x40
+
+#define X509V3_conf_err(val) ERR_add_error_data(6, "section:", (val)->section, \
+",name:", (val)->name, ",value:", (val)->value);
+
+#define X509V3_set_ctx_test(ctx) \
+			X509V3_set_ctx(ctx, NULL, NULL, NULL, NULL, CTX_TEST)
+#define X509V3_set_ctx_nodb(ctx) (ctx)->db = NULL;
+
+#define EXT_BITSTRING(nid, table) { nid, 0, ASN1_ITEM_ref(ASN1_BIT_STRING), \
+			0,0,0,0, \
+			0,0, \
+			(X509V3_EXT_I2V)i2v_ASN1_BIT_STRING, \
+			(X509V3_EXT_V2I)v2i_ASN1_BIT_STRING, \
+			NULL, NULL, \
+			(void *)(table)}
+
+#define EXT_IA5STRING(nid) { nid, 0, ASN1_ITEM_ref(ASN1_IA5STRING), \
+			0,0,0,0, \
+			(X509V3_EXT_I2S)i2s_ASN1_IA5STRING, \
+			(X509V3_EXT_S2I)s2i_ASN1_IA5STRING, \
+			0,0,0,0, \
+			NULL}
+
+#define EXT_END { -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+
+/* X509_PURPOSE stuff */
+
+#define EXFLAG_BCONS		0x1
+#define EXFLAG_KUSAGE		0x2
+#define EXFLAG_XKUSAGE		0x4
+#define EXFLAG_NSCERT		0x8
+
+#define EXFLAG_CA		0x10
+/* Really self issued not necessarily self signed */
+#define EXFLAG_SI		0x20
+#define EXFLAG_V1		0x40
+#define EXFLAG_INVALID		0x80
+#define EXFLAG_SET		0x100
+#define EXFLAG_CRITICAL		0x200
+#define EXFLAG_PROXY		0x400
+
+#define EXFLAG_INVALID_POLICY	0x800
+#define EXFLAG_FRESHEST		0x1000
+/* Self signed */
+#define EXFLAG_SS		0x2000
+
+#define KU_DIGITAL_SIGNATURE	0x0080
+#define KU_NON_REPUDIATION	0x0040
+#define KU_KEY_ENCIPHERMENT	0x0020
+#define KU_DATA_ENCIPHERMENT	0x0010
+#define KU_KEY_AGREEMENT	0x0008
+#define KU_KEY_CERT_SIGN	0x0004
+#define KU_CRL_SIGN		0x0002
+#define KU_ENCIPHER_ONLY	0x0001
+#define KU_DECIPHER_ONLY	0x8000
+
+#define NS_SSL_CLIENT		0x80
+#define NS_SSL_SERVER		0x40
+#define NS_SMIME		0x20
+#define NS_OBJSIGN		0x10
+#define NS_SSL_CA		0x04
+#define NS_SMIME_CA		0x02
+#define NS_OBJSIGN_CA		0x01
+#define NS_ANY_CA		(NS_SSL_CA|NS_SMIME_CA|NS_OBJSIGN_CA)
+
+#define XKU_SSL_SERVER		0x1	
+#define XKU_SSL_CLIENT		0x2
+#define XKU_SMIME		0x4
+#define XKU_CODE_SIGN		0x8
+#define XKU_SGC			0x10
+#define XKU_OCSP_SIGN		0x20
+#define XKU_TIMESTAMP		0x40
+#define XKU_DVCS		0x80
+#define XKU_ANYEKU		0x100
+
+#define X509_PURPOSE_DYNAMIC	0x1
+#define X509_PURPOSE_DYNAMIC_NAME	0x2
+
+typedef struct x509_purpose_st {
+	int purpose;
+	int trust;		/* Default trust ID */
+	int flags;
+	int (*check_purpose)(const struct x509_purpose_st *,
+				const X509 *, int);
+	char *name;
+	char *sname;
+	void *usr_data;
+} X509_PURPOSE;
+
+#define X509_PURPOSE_SSL_CLIENT		1
+#define X509_PURPOSE_SSL_SERVER		2
+#define X509_PURPOSE_NS_SSL_SERVER	3
+#define X509_PURPOSE_SMIME_SIGN		4
+#define X509_PURPOSE_SMIME_ENCRYPT	5
+#define X509_PURPOSE_CRL_SIGN		6
+#define X509_PURPOSE_ANY		7
+#define X509_PURPOSE_OCSP_HELPER	8
+#define X509_PURPOSE_TIMESTAMP_SIGN	9
+
+#define X509_PURPOSE_MIN		1
+#define X509_PURPOSE_MAX		9
+
+/* Flags for X509V3_EXT_print() */
+
+#define X509V3_EXT_UNKNOWN_MASK		(0xfL << 16)
+/* Return error for unknown extensions */
+#define X509V3_EXT_DEFAULT		0
+/* Print error for unknown extensions */
+#define X509V3_EXT_ERROR_UNKNOWN	(1L << 16)
+/* ASN1 parse unknown extensions */
+#define X509V3_EXT_PARSE_UNKNOWN	(2L << 16)
+/* BIO_dump unknown extensions */
+#define X509V3_EXT_DUMP_UNKNOWN		(3L << 16)
+
+/* Flags for X509V3_add1_i2d */
+
+#define X509V3_ADD_OP_MASK		0xfL
+#define X509V3_ADD_DEFAULT		0L
+#define X509V3_ADD_APPEND		1L
+#define X509V3_ADD_REPLACE		2L
+#define X509V3_ADD_REPLACE_EXISTING	3L
+#define X509V3_ADD_KEEP_EXISTING	4L
+#define X509V3_ADD_DELETE		5L
+#define X509V3_ADD_SILENT		0x10
+
+DEFINE_STACK_OF(X509_PURPOSE)
+
+DECLARE_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
+
+DECLARE_ASN1_FUNCTIONS(SXNET)
+DECLARE_ASN1_FUNCTIONS(SXNETID)
+
+int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen); 
+int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user, int userlen); 
+int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *izone, char *user, int userlen); 
+
+ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone);
+ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone);
+ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone);
+
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_KEYID)
+
+DECLARE_ASN1_FUNCTIONS(PKEY_USAGE_PERIOD)
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAME)
+OPENSSL_EXPORT GENERAL_NAME *GENERAL_NAME_dup(GENERAL_NAME *a);
+OPENSSL_EXPORT int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b);
+
+
+
+OPENSSL_EXPORT ASN1_BIT_STRING *v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method,
+				ASN1_BIT_STRING *bits,
+				STACK_OF(CONF_VALUE) *extlist);
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret);
+OPENSSL_EXPORT int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen);
+
+DECLARE_ASN1_FUNCTIONS(GENERAL_NAMES)
+
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
+		GENERAL_NAMES *gen, STACK_OF(CONF_VALUE) *extlist);
+OPENSSL_EXPORT GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
+				 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+
+DECLARE_ASN1_FUNCTIONS(OTHERNAME)
+DECLARE_ASN1_FUNCTIONS(EDIPARTYNAME)
+OPENSSL_EXPORT int OTHERNAME_cmp(OTHERNAME *a, OTHERNAME *b);
+OPENSSL_EXPORT void GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value);
+OPENSSL_EXPORT void *GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype);
+OPENSSL_EXPORT int GENERAL_NAME_set0_othername(GENERAL_NAME *gen,
+				ASN1_OBJECT *oid, ASN1_TYPE *value);
+OPENSSL_EXPORT int GENERAL_NAME_get0_otherName(GENERAL_NAME *gen, 
+				ASN1_OBJECT **poid, ASN1_TYPE **pvalue);
+
+OPENSSL_EXPORT char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *ia5);
+OPENSSL_EXPORT ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
+
+DECLARE_ASN1_FUNCTIONS(EXTENDED_KEY_USAGE)
+OPENSSL_EXPORT int i2a_ACCESS_DESCRIPTION(BIO *bp, ACCESS_DESCRIPTION* a);
+
+DECLARE_ASN1_FUNCTIONS(CERTIFICATEPOLICIES)
+DECLARE_ASN1_FUNCTIONS(POLICYINFO)
+DECLARE_ASN1_FUNCTIONS(POLICYQUALINFO)
+DECLARE_ASN1_FUNCTIONS(USERNOTICE)
+DECLARE_ASN1_FUNCTIONS(NOTICEREF)
+
+DECLARE_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT)
+DECLARE_ASN1_FUNCTIONS(DIST_POINT_NAME)
+DECLARE_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+OPENSSL_EXPORT int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname);
+
+OPENSSL_EXPORT int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc);
+
+DECLARE_ASN1_FUNCTIONS(ACCESS_DESCRIPTION)
+DECLARE_ASN1_FUNCTIONS(AUTHORITY_INFO_ACCESS)
+
+DECLARE_ASN1_ITEM(POLICY_MAPPING)
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
+DECLARE_ASN1_ITEM(POLICY_MAPPINGS)
+
+DECLARE_ASN1_ITEM(GENERAL_SUBTREE)
+DECLARE_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
+
+DECLARE_ASN1_ITEM(NAME_CONSTRAINTS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+DECLARE_ASN1_ALLOC_FUNCTIONS(POLICY_CONSTRAINTS)
+DECLARE_ASN1_ITEM(POLICY_CONSTRAINTS)
+
+OPENSSL_EXPORT GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
+			       const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       int gen_type, char *value, int is_nc);
+
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+			       CONF_VALUE *cnf);
+OPENSSL_EXPORT GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
+				  const X509V3_EXT_METHOD *method,
+				  X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc);
+OPENSSL_EXPORT void X509V3_conf_free(CONF_VALUE *val);
+
+// X509V3_EXT_conf_nid contains the only exposed instance of an LHASH in our
+// public headers. The |conf| pointer must be NULL but cryptography.io wraps
+// this function so we cannot, yet, replace the type with a dummy struct.
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid, char *value);
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name, char *value);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section, STACK_OF(X509_EXTENSION) **sk);
+OPENSSL_EXPORT int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509 *cert);
+OPENSSL_EXPORT int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_REQ *req);
+OPENSSL_EXPORT int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section, X509_CRL *crl);
+
+OPENSSL_EXPORT int X509V3_add_value_bool_nf(char *name, int asn1_bool,
+			     STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool);
+OPENSSL_EXPORT int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint);
+OPENSSL_EXPORT void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf);
+
+OPENSSL_EXPORT char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section);
+OPENSSL_EXPORT void X509V3_string_free(X509V3_CTX *ctx, char *str);
+OPENSSL_EXPORT void X509V3_section_free( X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section);
+OPENSSL_EXPORT void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subject,
+				 X509_REQ *req, X509_CRL *crl, int flags);
+
+OPENSSL_EXPORT int X509V3_add_value(const char *name, const char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_uchar(const char *name, const unsigned char *value,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_bool(const char *name, int asn1_bool,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
+						STACK_OF(CONF_VALUE) **extlist);
+OPENSSL_EXPORT char * i2s_ASN1_INTEGER(X509V3_EXT_METHOD *meth, ASN1_INTEGER *aint);
+OPENSSL_EXPORT ASN1_INTEGER * s2i_ASN1_INTEGER(X509V3_EXT_METHOD *meth, char *value);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT char * i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *meth, ASN1_ENUMERATED *aint);
+OPENSSL_EXPORT int X509V3_EXT_add(X509V3_EXT_METHOD *ext);
+OPENSSL_EXPORT int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist);
+OPENSSL_EXPORT int X509V3_EXT_add_alias(int nid_to, int nid_from);
+OPENSSL_EXPORT void X509V3_EXT_cleanup(void);
+
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext);
+OPENSSL_EXPORT const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid);
+OPENSSL_EXPORT int X509V3_add_standard_extensions(void);
+OPENSSL_EXPORT STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line);
+OPENSSL_EXPORT void *X509V3_EXT_d2i(X509_EXTENSION *ext);
+OPENSSL_EXPORT void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int X509V3_EXT_free(int nid, void *ext_data);
+
+
+OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc);
+OPENSSL_EXPORT int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, int crit, unsigned long flags);
+
+OPENSSL_EXPORT void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
+								 int ml);
+OPENSSL_EXPORT int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent);
+OPENSSL_EXPORT int X509V3_EXT_print_fp(FILE *out, X509_EXTENSION *ext, int flag, int indent);
+
+OPENSSL_EXPORT int X509V3_extensions_print(BIO *out, const char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent);
+
+OPENSSL_EXPORT int X509_check_ca(X509 *x);
+OPENSSL_EXPORT int X509_check_purpose(X509 *x, int id, int ca);
+OPENSSL_EXPORT int X509_supported_extension(X509_EXTENSION *ex);
+OPENSSL_EXPORT int X509_PURPOSE_set(int *p, int purpose);
+OPENSSL_EXPORT int X509_check_issued(X509 *issuer, X509 *subject);
+OPENSSL_EXPORT int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid);
+
+OPENSSL_EXPORT uint32_t X509_get_extension_flags(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_key_usage(X509 *x);
+OPENSSL_EXPORT uint32_t X509_get_extended_key_usage(X509 *x);
+
+OPENSSL_EXPORT int X509_PURPOSE_get_count(void);
+OPENSSL_EXPORT X509_PURPOSE * X509_PURPOSE_get0(int idx);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_sname(char *sname);
+OPENSSL_EXPORT int X509_PURPOSE_get_by_id(int id);
+OPENSSL_EXPORT int X509_PURPOSE_add(int id, int trust, int flags,
+			int (*ck)(const X509_PURPOSE *, const X509 *, int),
+				char *name, char *sname, void *arg);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_name(X509_PURPOSE *xp);
+OPENSSL_EXPORT char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp);
+OPENSSL_EXPORT int X509_PURPOSE_get_trust(X509_PURPOSE *xp);
+OPENSSL_EXPORT void X509_PURPOSE_cleanup(void);
+OPENSSL_EXPORT int X509_PURPOSE_get_id(X509_PURPOSE *);
+
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x);
+OPENSSL_EXPORT void X509_email_free(STACK_OF(OPENSSL_STRING) *sk);
+OPENSSL_EXPORT STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x);
+/* Flags for X509_check_* functions */
+
+/* Deprecated: this flag does nothing */
+#define X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT	0
+/* Disable wildcard matching for dnsName fields and common name. */
+#define X509_CHECK_FLAG_NO_WILDCARDS	0x2
+/* Wildcards must not match a partial label. */
+#define X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS 0x4
+/* Allow (non-partial) wildcards to match multiple labels. */
+#define X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS 0x8
+/* Constraint verifier subdomain patterns to match a single labels. */
+#define X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS 0x10
+/* Skip the subject common name fallback if subjectAltNames is missing. */
+#define X509_CHECK_FLAG_NEVER_CHECK_SUBJECT 0x20
+/*
+ * Match reference identifiers starting with "." to any sub-domain.
+ * This is a non-public flag, turned on implicitly when the subject
+ * reference identity is a DNS name.
+ */
+#define _X509_CHECK_FLAG_DOT_SUBDOMAINS 0x8000
+
+OPENSSL_EXPORT int X509_check_host(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags, char **peername);
+OPENSSL_EXPORT int X509_check_email(X509 *x, const char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
+					unsigned int flags);
+OPENSSL_EXPORT int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags);
+
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc);
+OPENSSL_EXPORT ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc);
+OPENSSL_EXPORT int a2i_ipadd(unsigned char *ipout, const char *ipasc);
+OPENSSL_EXPORT int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
+						unsigned long chtype);
+
+OPENSSL_EXPORT void X509_POLICY_NODE_print(BIO *out, X509_POLICY_NODE *node, int indent);
+DEFINE_STACK_OF(X509_POLICY_NODE)
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+
+
+#ifdef  __cplusplus
+}
+
+extern "C++" {
+
+BSSL_NAMESPACE_BEGIN
+
+BORINGSSL_MAKE_DELETER(ACCESS_DESCRIPTION, ACCESS_DESCRIPTION_free)
+BORINGSSL_MAKE_DELETER(AUTHORITY_KEYID, AUTHORITY_KEYID_free)
+BORINGSSL_MAKE_DELETER(BASIC_CONSTRAINTS, BASIC_CONSTRAINTS_free)
+BORINGSSL_MAKE_DELETER(DIST_POINT, DIST_POINT_free)
+BORINGSSL_MAKE_DELETER(GENERAL_NAME, GENERAL_NAME_free)
+BORINGSSL_MAKE_DELETER(POLICYINFO, POLICYINFO_free)
+
+BSSL_NAMESPACE_END
+
+}  /* extern C++ */
+#endif
+
+#define X509V3_R_BAD_IP_ADDRESS 100
+#define X509V3_R_BAD_OBJECT 101
+#define X509V3_R_BN_DEC2BN_ERROR 102
+#define X509V3_R_BN_TO_ASN1_INTEGER_ERROR 103
+#define X509V3_R_CANNOT_FIND_FREE_FUNCTION 104
+#define X509V3_R_DIRNAME_ERROR 105
+#define X509V3_R_DISTPOINT_ALREADY_SET 106
+#define X509V3_R_DUPLICATE_ZONE_ID 107
+#define X509V3_R_ERROR_CONVERTING_ZONE 108
+#define X509V3_R_ERROR_CREATING_EXTENSION 109
+#define X509V3_R_ERROR_IN_EXTENSION 110
+#define X509V3_R_EXPECTED_A_SECTION_NAME 111
+#define X509V3_R_EXTENSION_EXISTS 112
+#define X509V3_R_EXTENSION_NAME_ERROR 113
+#define X509V3_R_EXTENSION_NOT_FOUND 114
+#define X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED 115
+#define X509V3_R_EXTENSION_VALUE_ERROR 116
+#define X509V3_R_ILLEGAL_EMPTY_EXTENSION 117
+#define X509V3_R_ILLEGAL_HEX_DIGIT 118
+#define X509V3_R_INCORRECT_POLICY_SYNTAX_TAG 119
+#define X509V3_R_INVALID_BOOLEAN_STRING 120
+#define X509V3_R_INVALID_EXTENSION_STRING 121
+#define X509V3_R_INVALID_MULTIPLE_RDNS 122
+#define X509V3_R_INVALID_NAME 123
+#define X509V3_R_INVALID_NULL_ARGUMENT 124
+#define X509V3_R_INVALID_NULL_NAME 125
+#define X509V3_R_INVALID_NULL_VALUE 126
+#define X509V3_R_INVALID_NUMBER 127
+#define X509V3_R_INVALID_NUMBERS 128
+#define X509V3_R_INVALID_OBJECT_IDENTIFIER 129
+#define X509V3_R_INVALID_OPTION 130
+#define X509V3_R_INVALID_POLICY_IDENTIFIER 131
+#define X509V3_R_INVALID_PROXY_POLICY_SETTING 132
+#define X509V3_R_INVALID_PURPOSE 133
+#define X509V3_R_INVALID_SECTION 134
+#define X509V3_R_INVALID_SYNTAX 135
+#define X509V3_R_ISSUER_DECODE_ERROR 136
+#define X509V3_R_MISSING_VALUE 137
+#define X509V3_R_NEED_ORGANIZATION_AND_NUMBERS 138
+#define X509V3_R_NO_CONFIG_DATABASE 139
+#define X509V3_R_NO_ISSUER_CERTIFICATE 140
+#define X509V3_R_NO_ISSUER_DETAILS 141
+#define X509V3_R_NO_POLICY_IDENTIFIER 142
+#define X509V3_R_NO_PROXY_CERT_POLICY_LANGUAGE_DEFINED 143
+#define X509V3_R_NO_PUBLIC_KEY 144
+#define X509V3_R_NO_SUBJECT_DETAILS 145
+#define X509V3_R_ODD_NUMBER_OF_DIGITS 146
+#define X509V3_R_OPERATION_NOT_DEFINED 147
+#define X509V3_R_OTHERNAME_ERROR 148
+#define X509V3_R_POLICY_LANGUAGE_ALREADY_DEFINED 149
+#define X509V3_R_POLICY_PATH_LENGTH 150
+#define X509V3_R_POLICY_PATH_LENGTH_ALREADY_DEFINED 151
+#define X509V3_R_POLICY_WHEN_PROXY_LANGUAGE_REQUIRES_NO_POLICY 152
+#define X509V3_R_SECTION_NOT_FOUND 153
+#define X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS 154
+#define X509V3_R_UNABLE_TO_GET_ISSUER_KEYID 155
+#define X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT 156
+#define X509V3_R_UNKNOWN_EXTENSION 157
+#define X509V3_R_UNKNOWN_EXTENSION_NAME 158
+#define X509V3_R_UNKNOWN_OPTION 159
+#define X509V3_R_UNSUPPORTED_OPTION 160
+#define X509V3_R_UNSUPPORTED_TYPE 161
+#define X509V3_R_USER_TOO_LONG 162
+
+#endif
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc
new file mode 100644
index 0000000..4cb6146
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc	
@@ -0,0 +1,179 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl_grpc/ssl.h>
+
+#include <openssl_grpc/bio.h>
+
+
+static SSL *get_ssl(BIO *bio) {
+  return reinterpret_cast<SSL *>(bio->ptr);
+}
+
+static int ssl_read(BIO *bio, char *out, int outl) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  const int ret = SSL_read(ssl, out, outl);
+
+  switch (SSL_get_error(ssl, ret)) {
+    case SSL_ERROR_WANT_READ:
+      BIO_set_retry_read(bio);
+      break;
+
+    case SSL_ERROR_WANT_WRITE:
+      BIO_set_retry_write(bio);
+      break;
+
+    case SSL_ERROR_WANT_ACCEPT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_ACCEPT;
+      break;
+
+    case SSL_ERROR_WANT_CONNECT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_CONNECT;
+      break;
+
+    case SSL_ERROR_NONE:
+    case SSL_ERROR_SYSCALL:
+    case SSL_ERROR_SSL:
+    case SSL_ERROR_ZERO_RETURN:
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static int ssl_write(BIO *bio, const char *out, int outl) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  const int ret = SSL_write(ssl, out, outl);
+
+  switch (SSL_get_error(ssl, ret)) {
+    case SSL_ERROR_WANT_WRITE:
+      BIO_set_retry_write(bio);
+      break;
+
+    case SSL_ERROR_WANT_READ:
+      BIO_set_retry_read(bio);
+      break;
+
+    case SSL_ERROR_WANT_CONNECT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_CONNECT;
+      break;
+
+    case SSL_ERROR_NONE:
+    case SSL_ERROR_SYSCALL:
+    case SSL_ERROR_SSL:
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static long ssl_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL && cmd != BIO_C_SET_SSL) {
+    return 0;
+  }
+
+  switch (cmd) {
+    case BIO_C_SET_SSL:
+      bio->shutdown = num;
+      bio->ptr = ptr;
+      bio->init = 1;
+      return 1;
+
+    case BIO_CTRL_GET_CLOSE:
+      return bio->shutdown;
+
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = num;
+      return 1;
+
+    case BIO_CTRL_WPENDING:
+      return BIO_ctrl(SSL_get_wbio(ssl), cmd, num, ptr);
+
+    case BIO_CTRL_PENDING:
+      return SSL_pending(ssl);
+
+    case BIO_CTRL_FLUSH: {
+      BIO_clear_retry_flags(bio);
+      long ret = BIO_ctrl(SSL_get_wbio(ssl), cmd, num, ptr);
+      BIO_copy_next_retry(bio);
+      return ret;
+    }
+
+    case BIO_CTRL_PUSH:
+    case BIO_CTRL_POP:
+    case BIO_CTRL_DUP:
+      return -1;
+
+    default:
+      return BIO_ctrl(SSL_get_rbio(ssl), cmd, num, ptr);
+  }
+}
+
+static int ssl_new(BIO *bio) {
+  return 1;
+}
+
+static int ssl_free(BIO *bio) {
+  SSL *ssl = get_ssl(bio);
+
+  if (ssl == NULL) {
+    return 1;
+  }
+
+  SSL_shutdown(ssl);
+  if (bio->shutdown) {
+    SSL_free(ssl);
+  }
+
+  return 1;
+}
+
+static long ssl_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  switch (cmd) {
+    case BIO_CTRL_SET_CALLBACK:
+      return -1;
+
+    default:
+      return BIO_callback_ctrl(SSL_get_rbio(ssl), cmd, fp);
+  }
+}
+
+static const BIO_METHOD ssl_method = {
+    BIO_TYPE_SSL, "SSL",    ssl_write, ssl_read, NULL,
+    NULL,         ssl_ctrl, ssl_new,   ssl_free, ssl_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_ssl(void) { return &ssl_method; }
+
+long BIO_set_ssl(BIO *bio, SSL *ssl, int take_owership) {
+  return BIO_ctrl(bio, BIO_C_SET_SSL, take_owership, ssl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc.grpc_back
new file mode 100644
index 0000000..61afee5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/bio_ssl.cc.grpc_back	
@@ -0,0 +1,179 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/ssl.h>
+
+#include <openssl/bio.h>
+
+
+static SSL *get_ssl(BIO *bio) {
+  return reinterpret_cast<SSL *>(bio->ptr);
+}
+
+static int ssl_read(BIO *bio, char *out, int outl) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  const int ret = SSL_read(ssl, out, outl);
+
+  switch (SSL_get_error(ssl, ret)) {
+    case SSL_ERROR_WANT_READ:
+      BIO_set_retry_read(bio);
+      break;
+
+    case SSL_ERROR_WANT_WRITE:
+      BIO_set_retry_write(bio);
+      break;
+
+    case SSL_ERROR_WANT_ACCEPT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_ACCEPT;
+      break;
+
+    case SSL_ERROR_WANT_CONNECT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_CONNECT;
+      break;
+
+    case SSL_ERROR_NONE:
+    case SSL_ERROR_SYSCALL:
+    case SSL_ERROR_SSL:
+    case SSL_ERROR_ZERO_RETURN:
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static int ssl_write(BIO *bio, const char *out, int outl) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  BIO_clear_retry_flags(bio);
+
+  const int ret = SSL_write(ssl, out, outl);
+
+  switch (SSL_get_error(ssl, ret)) {
+    case SSL_ERROR_WANT_WRITE:
+      BIO_set_retry_write(bio);
+      break;
+
+    case SSL_ERROR_WANT_READ:
+      BIO_set_retry_read(bio);
+      break;
+
+    case SSL_ERROR_WANT_CONNECT:
+      BIO_set_retry_special(bio);
+      bio->retry_reason = BIO_RR_CONNECT;
+      break;
+
+    case SSL_ERROR_NONE:
+    case SSL_ERROR_SYSCALL:
+    case SSL_ERROR_SSL:
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static long ssl_ctrl(BIO *bio, int cmd, long num, void *ptr) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL && cmd != BIO_C_SET_SSL) {
+    return 0;
+  }
+
+  switch (cmd) {
+    case BIO_C_SET_SSL:
+      bio->shutdown = num;
+      bio->ptr = ptr;
+      bio->init = 1;
+      return 1;
+
+    case BIO_CTRL_GET_CLOSE:
+      return bio->shutdown;
+
+    case BIO_CTRL_SET_CLOSE:
+      bio->shutdown = num;
+      return 1;
+
+    case BIO_CTRL_WPENDING:
+      return BIO_ctrl(SSL_get_wbio(ssl), cmd, num, ptr);
+
+    case BIO_CTRL_PENDING:
+      return SSL_pending(ssl);
+
+    case BIO_CTRL_FLUSH: {
+      BIO_clear_retry_flags(bio);
+      long ret = BIO_ctrl(SSL_get_wbio(ssl), cmd, num, ptr);
+      BIO_copy_next_retry(bio);
+      return ret;
+    }
+
+    case BIO_CTRL_PUSH:
+    case BIO_CTRL_POP:
+    case BIO_CTRL_DUP:
+      return -1;
+
+    default:
+      return BIO_ctrl(SSL_get_rbio(ssl), cmd, num, ptr);
+  }
+}
+
+static int ssl_new(BIO *bio) {
+  return 1;
+}
+
+static int ssl_free(BIO *bio) {
+  SSL *ssl = get_ssl(bio);
+
+  if (ssl == NULL) {
+    return 1;
+  }
+
+  SSL_shutdown(ssl);
+  if (bio->shutdown) {
+    SSL_free(ssl);
+  }
+
+  return 1;
+}
+
+static long ssl_callback_ctrl(BIO *bio, int cmd, bio_info_cb fp) {
+  SSL *ssl = get_ssl(bio);
+  if (ssl == NULL) {
+    return 0;
+  }
+
+  switch (cmd) {
+    case BIO_CTRL_SET_CALLBACK:
+      return -1;
+
+    default:
+      return BIO_callback_ctrl(SSL_get_rbio(ssl), cmd, fp);
+  }
+}
+
+static const BIO_METHOD ssl_method = {
+    BIO_TYPE_SSL, "SSL",    ssl_write, ssl_read, NULL,
+    NULL,         ssl_ctrl, ssl_new,   ssl_free, ssl_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_ssl(void) { return &ssl_method; }
+
+long BIO_set_ssl(BIO *bio, SSL *ssl, int take_owership) {
+  return BIO_ctrl(bio, BIO_C_SET_SSL, take_owership, ssl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc
new file mode 100644
index 0000000..9994db0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc	
@@ -0,0 +1,841 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// TODO(davidben): 28 comes from the size of IP + UDP header. Is this reasonable
+// for these values? Notably, why is kMinMTU a function of the transport
+// protocol's overhead rather than, say, what's needed to hold a minimally-sized
+// handshake fragment plus protocol overhead.
+
+// kMinMTU is the minimum acceptable MTU value.
+static const unsigned int kMinMTU = 256 - 28;
+
+// kDefaultMTU is the default MTU value to use if neither the user nor
+// the underlying BIO supplies one.
+static const unsigned int kDefaultMTU = 1500 - 28;
+
+
+// Receiving handshake messages.
+
+hm_fragment::~hm_fragment() {
+  OPENSSL_free(data);
+  OPENSSL_free(reassembly);
+}
+
+static UniquePtr<hm_fragment> dtls1_hm_fragment_new(
+    const struct hm_header_st *msg_hdr) {
+  ScopedCBB cbb;
+  UniquePtr<hm_fragment> frag = MakeUnique<hm_fragment>();
+  if (!frag) {
+    return nullptr;
+  }
+  frag->type = msg_hdr->type;
+  frag->seq = msg_hdr->seq;
+  frag->msg_len = msg_hdr->msg_len;
+
+  // Allocate space for the reassembled message and fill in the header.
+  frag->data =
+      (uint8_t *)OPENSSL_malloc(DTLS1_HM_HEADER_LENGTH + msg_hdr->msg_len);
+  if (frag->data == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  if (!CBB_init_fixed(cbb.get(), frag->data, DTLS1_HM_HEADER_LENGTH) ||
+      !CBB_add_u8(cbb.get(), msg_hdr->type) ||
+      !CBB_add_u24(cbb.get(), msg_hdr->msg_len) ||
+      !CBB_add_u16(cbb.get(), msg_hdr->seq) ||
+      !CBB_add_u24(cbb.get(), 0 /* frag_off */) ||
+      !CBB_add_u24(cbb.get(), msg_hdr->msg_len) ||
+      !CBB_finish(cbb.get(), NULL, NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  // If the handshake message is empty, |frag->reassembly| is NULL.
+  if (msg_hdr->msg_len > 0) {
+    // Initialize reassembly bitmask.
+    if (msg_hdr->msg_len + 7 < msg_hdr->msg_len) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return nullptr;
+    }
+    size_t bitmask_len = (msg_hdr->msg_len + 7) / 8;
+    frag->reassembly = (uint8_t *)OPENSSL_malloc(bitmask_len);
+    if (frag->reassembly == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+    OPENSSL_memset(frag->reassembly, 0, bitmask_len);
+  }
+
+  return frag;
+}
+
+// bit_range returns a |uint8_t| with bits |start|, inclusive, to |end|,
+// exclusive, set.
+static uint8_t bit_range(size_t start, size_t end) {
+  return (uint8_t)(~((1u << start) - 1) & ((1u << end) - 1));
+}
+
+// dtls1_hm_fragment_mark marks bytes |start|, inclusive, to |end|, exclusive,
+// as received in |frag|. If |frag| becomes complete, it clears
+// |frag->reassembly|. The range must be within the bounds of |frag|'s message
+// and |frag->reassembly| must not be NULL.
+static void dtls1_hm_fragment_mark(hm_fragment *frag, size_t start,
+                                   size_t end) {
+  size_t msg_len = frag->msg_len;
+
+  if (frag->reassembly == NULL || start > end || end > msg_len) {
+    assert(0);
+    return;
+  }
+  // A zero-length message will never have a pending reassembly.
+  assert(msg_len > 0);
+
+  if (start == end) {
+    return;
+  }
+
+  if ((start >> 3) == (end >> 3)) {
+    frag->reassembly[start >> 3] |= bit_range(start & 7, end & 7);
+  } else {
+    frag->reassembly[start >> 3] |= bit_range(start & 7, 8);
+    for (size_t i = (start >> 3) + 1; i < (end >> 3); i++) {
+      frag->reassembly[i] = 0xff;
+    }
+    if ((end & 7) != 0) {
+      frag->reassembly[end >> 3] |= bit_range(0, end & 7);
+    }
+  }
+
+  // Check if the fragment is complete.
+  for (size_t i = 0; i < (msg_len >> 3); i++) {
+    if (frag->reassembly[i] != 0xff) {
+      return;
+    }
+  }
+  if ((msg_len & 7) != 0 &&
+      frag->reassembly[msg_len >> 3] != bit_range(0, msg_len & 7)) {
+    return;
+  }
+
+  OPENSSL_free(frag->reassembly);
+  frag->reassembly = NULL;
+}
+
+// dtls1_is_current_message_complete returns whether the current handshake
+// message is complete.
+static bool dtls1_is_current_message_complete(const SSL *ssl) {
+  size_t idx = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  return frag != NULL && frag->reassembly == NULL;
+}
+
+// dtls1_get_incoming_message returns the incoming message corresponding to
+// |msg_hdr|. If none exists, it creates a new one and inserts it in the
+// queue. Otherwise, it checks |msg_hdr| is consistent with the existing one. It
+// returns NULL on failure. The caller does not take ownership of the result.
+static hm_fragment *dtls1_get_incoming_message(
+    SSL *ssl, uint8_t *out_alert, const struct hm_header_st *msg_hdr) {
+  if (msg_hdr->seq < ssl->d1->handshake_read_seq ||
+      msg_hdr->seq - ssl->d1->handshake_read_seq >= SSL_MAX_HANDSHAKE_FLIGHT) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return NULL;
+  }
+
+  size_t idx = msg_hdr->seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  if (frag != NULL) {
+    assert(frag->seq == msg_hdr->seq);
+    // The new fragment must be compatible with the previous fragments from this
+    // message.
+    if (frag->type != msg_hdr->type ||
+        frag->msg_len != msg_hdr->msg_len) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_FRAGMENT_MISMATCH);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return NULL;
+    }
+    return frag;
+  }
+
+  // This is the first fragment from this message.
+  ssl->d1->incoming_messages[idx] = dtls1_hm_fragment_new(msg_hdr);
+  if (!ssl->d1->incoming_messages[idx]) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return NULL;
+  }
+  return ssl->d1->incoming_messages[idx].get();
+}
+
+ssl_open_record_t dtls1_open_handshake(SSL *ssl, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in) {
+  uint8_t type;
+  Span<uint8_t> record;
+  auto ret = dtls_open_record(ssl, &type, &record, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  switch (type) {
+    case SSL3_RT_APPLICATION_DATA:
+      // Unencrypted application data records are always illegal.
+      if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return ssl_open_record_error;
+      }
+
+      // Out-of-order application data may be received between ChangeCipherSpec
+      // and finished. Discard it.
+      return ssl_open_record_discard;
+
+    case SSL3_RT_CHANGE_CIPHER_SPEC:
+      // We do not support renegotiation, so encrypted ChangeCipherSpec records
+      // are illegal.
+      if (!ssl->s3->aead_read_ctx->is_null_cipher()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return ssl_open_record_error;
+      }
+
+      if (record.size() != 1u || record[0] != SSL3_MT_CCS) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC);
+        *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+        return ssl_open_record_error;
+      }
+
+      // Flag the ChangeCipherSpec for later.
+      ssl->d1->has_change_cipher_spec = true;
+      ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                          record);
+      return ssl_open_record_success;
+
+    case SSL3_RT_HANDSHAKE:
+      // Break out to main processing.
+      break;
+
+    default:
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, record.data(), record.size());
+  while (CBS_len(&cbs) > 0) {
+    // Read a handshake fragment.
+    struct hm_header_st msg_hdr;
+    CBS body;
+    if (!dtls1_parse_fragment(&cbs, &msg_hdr, &body)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HANDSHAKE_RECORD);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    const size_t frag_off = msg_hdr.frag_off;
+    const size_t frag_len = msg_hdr.frag_len;
+    const size_t msg_len = msg_hdr.msg_len;
+    if (frag_off > msg_len || frag_off + frag_len < frag_off ||
+        frag_off + frag_len > msg_len ||
+        msg_len > ssl_max_handshake_message_len(ssl)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return ssl_open_record_error;
+    }
+
+    // The encrypted epoch in DTLS has only one handshake message.
+    if (ssl->d1->r_epoch == 1 && msg_hdr.seq != ssl->d1->handshake_read_seq) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+
+    if (msg_hdr.seq < ssl->d1->handshake_read_seq ||
+        msg_hdr.seq >
+            (unsigned)ssl->d1->handshake_read_seq + SSL_MAX_HANDSHAKE_FLIGHT) {
+      // Ignore fragments from the past, or ones too far in the future.
+      continue;
+    }
+
+    hm_fragment *frag = dtls1_get_incoming_message(ssl, out_alert, &msg_hdr);
+    if (frag == NULL) {
+      return ssl_open_record_error;
+    }
+    assert(frag->msg_len == msg_len);
+
+    if (frag->reassembly == NULL) {
+      // The message is already assembled.
+      continue;
+    }
+    assert(msg_len > 0);
+
+    // Copy the body into the fragment.
+    OPENSSL_memcpy(frag->data + DTLS1_HM_HEADER_LENGTH + frag_off,
+                   CBS_data(&body), CBS_len(&body));
+    dtls1_hm_fragment_mark(frag, frag_off, frag_off + frag_len);
+  }
+
+  return ssl_open_record_success;
+}
+
+bool dtls1_get_message(const SSL *ssl, SSLMessage *out) {
+  if (!dtls1_is_current_message_complete(ssl)) {
+    return false;
+  }
+
+  size_t idx = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  out->type = frag->type;
+  CBS_init(&out->body, frag->data + DTLS1_HM_HEADER_LENGTH, frag->msg_len);
+  CBS_init(&out->raw, frag->data, DTLS1_HM_HEADER_LENGTH + frag->msg_len);
+  out->is_v2_hello = false;
+  if (!ssl->s3->has_message) {
+    ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HANDSHAKE, out->raw);
+    ssl->s3->has_message = true;
+  }
+  return true;
+}
+
+void dtls1_next_message(SSL *ssl) {
+  assert(ssl->s3->has_message);
+  assert(dtls1_is_current_message_complete(ssl));
+  size_t index = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  ssl->d1->incoming_messages[index].reset();
+  ssl->d1->handshake_read_seq++;
+  ssl->s3->has_message = false;
+  // If we previously sent a flight, mark it as having a reply, so
+  // |on_handshake_complete| can manage post-handshake retransmission.
+  if (ssl->d1->outgoing_messages_complete) {
+    ssl->d1->flight_has_reply = true;
+  }
+}
+
+bool dtls_has_unprocessed_handshake_data(const SSL *ssl) {
+  if (ssl->d1->has_change_cipher_spec) {
+    return true;
+  }
+
+  size_t current = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  for (size_t i = 0; i < SSL_MAX_HANDSHAKE_FLIGHT; i++) {
+    // Skip the current message.
+    if (ssl->s3->has_message && i == current) {
+      assert(dtls1_is_current_message_complete(ssl));
+      continue;
+    }
+    if (ssl->d1->incoming_messages[i] != nullptr) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool dtls1_parse_fragment(CBS *cbs, struct hm_header_st *out_hdr,
+                          CBS *out_body) {
+  OPENSSL_memset(out_hdr, 0x00, sizeof(struct hm_header_st));
+
+  if (!CBS_get_u8(cbs, &out_hdr->type) ||
+      !CBS_get_u24(cbs, &out_hdr->msg_len) ||
+      !CBS_get_u16(cbs, &out_hdr->seq) ||
+      !CBS_get_u24(cbs, &out_hdr->frag_off) ||
+      !CBS_get_u24(cbs, &out_hdr->frag_len) ||
+      !CBS_get_bytes(cbs, out_body, out_hdr->frag_len)) {
+    return false;
+  }
+
+  return true;
+}
+
+ssl_open_record_t dtls1_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                                uint8_t *out_alert,
+                                                Span<uint8_t> in) {
+  if (!ssl->d1->has_change_cipher_spec) {
+    // dtls1_open_handshake processes both handshake and ChangeCipherSpec.
+    auto ret = dtls1_open_handshake(ssl, out_consumed, out_alert, in);
+    if (ret != ssl_open_record_success) {
+      return ret;
+    }
+  }
+  if (ssl->d1->has_change_cipher_spec) {
+    ssl->d1->has_change_cipher_spec = false;
+    return ssl_open_record_success;
+  }
+  return ssl_open_record_discard;
+}
+
+
+// Sending handshake messages.
+
+void DTLS_OUTGOING_MESSAGE::Clear() {
+  OPENSSL_free(data);
+  data = nullptr;
+}
+
+void dtls_clear_outgoing_messages(SSL *ssl) {
+  for (size_t i = 0; i < ssl->d1->outgoing_messages_len; i++) {
+    ssl->d1->outgoing_messages[i].Clear();
+  }
+  ssl->d1->outgoing_messages_len = 0;
+  ssl->d1->outgoing_written = 0;
+  ssl->d1->outgoing_offset = 0;
+  ssl->d1->outgoing_messages_complete = false;
+  ssl->d1->flight_has_reply = false;
+}
+
+bool dtls1_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type) {
+  // Pick a modest size hint to save most of the |realloc| calls.
+  if (!CBB_init(cbb, 64) ||
+      !CBB_add_u8(cbb, type) ||
+      !CBB_add_u24(cbb, 0 /* length (filled in later) */) ||
+      !CBB_add_u16(cbb, ssl->d1->handshake_write_seq) ||
+      !CBB_add_u24(cbb, 0 /* offset */) ||
+      !CBB_add_u24_length_prefixed(cbb, body)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool dtls1_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg) {
+  if (!CBBFinishArray(cbb, out_msg) ||
+      out_msg->size() < DTLS1_HM_HEADER_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Fix up the header. Copy the fragment length into the total message
+  // length.
+  OPENSSL_memcpy(out_msg->data() + 1,
+                 out_msg->data() + DTLS1_HM_HEADER_LENGTH - 3, 3);
+  return true;
+}
+
+// ssl_size_t_greater_than_32_bits returns whether |v| exceeds the bounds of a
+// 32-bit value. The obvious thing doesn't work because, in some 32-bit build
+// configurations, the compiler warns that the test is always false and breaks
+// the build.
+static bool ssl_size_t_greater_than_32_bits(size_t v) {
+#if defined(OPENSSL_64_BIT)
+  return v > 0xffffffff;
+#elif defined(OPENSSL_32_BIT)
+  return false;
+#else
+#error "Building for neither 32- nor 64-bits."
+#endif
+}
+
+// add_outgoing adds a new handshake message or ChangeCipherSpec to the current
+// outgoing flight. It returns true on success and false on error.
+static bool add_outgoing(SSL *ssl, bool is_ccs, Array<uint8_t> data) {
+  if (ssl->d1->outgoing_messages_complete) {
+    // If we've begun writing a new flight, we received the peer flight. Discard
+    // the timer and the our flight.
+    dtls1_stop_timer(ssl);
+    dtls_clear_outgoing_messages(ssl);
+  }
+
+  static_assert(SSL_MAX_HANDSHAKE_FLIGHT <
+                    (1 << 8 * sizeof(ssl->d1->outgoing_messages_len)),
+                "outgoing_messages_len is too small");
+  if (ssl->d1->outgoing_messages_len >= SSL_MAX_HANDSHAKE_FLIGHT ||
+      ssl_size_t_greater_than_32_bits(data.size())) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!is_ccs) {
+    // TODO(svaldez): Move this up a layer to fix abstraction for SSLTranscript
+    // on hs.
+    if (ssl->s3->hs != NULL &&
+        !ssl->s3->hs->transcript.Update(data)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    ssl->d1->handshake_write_seq++;
+  }
+
+  DTLS_OUTGOING_MESSAGE *msg =
+      &ssl->d1->outgoing_messages[ssl->d1->outgoing_messages_len];
+  size_t len;
+  data.Release(&msg->data, &len);
+  msg->len = len;
+  msg->epoch = ssl->d1->w_epoch;
+  msg->is_ccs = is_ccs;
+
+  ssl->d1->outgoing_messages_len++;
+  return true;
+}
+
+bool dtls1_add_message(SSL *ssl, Array<uint8_t> data) {
+  return add_outgoing(ssl, false /* handshake */, std::move(data));
+}
+
+bool dtls1_add_change_cipher_spec(SSL *ssl) {
+  return add_outgoing(ssl, true /* ChangeCipherSpec */, Array<uint8_t>());
+}
+
+// dtls1_update_mtu updates the current MTU from the BIO, ensuring it is above
+// the minimum.
+static void dtls1_update_mtu(SSL *ssl) {
+  // TODO(davidben): No consumer implements |BIO_CTRL_DGRAM_SET_MTU| and the
+  // only |BIO_CTRL_DGRAM_QUERY_MTU| implementation could use
+  // |SSL_set_mtu|. Does this need to be so complex?
+  if (ssl->d1->mtu < dtls1_min_mtu() &&
+      !(SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    long mtu = BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
+    if (mtu >= 0 && mtu <= (1 << 30) && (unsigned)mtu >= dtls1_min_mtu()) {
+      ssl->d1->mtu = (unsigned)mtu;
+    } else {
+      ssl->d1->mtu = kDefaultMTU;
+      BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_SET_MTU, ssl->d1->mtu, NULL);
+    }
+  }
+
+  // The MTU should be above the minimum now.
+  assert(ssl->d1->mtu >= dtls1_min_mtu());
+}
+
+enum seal_result_t {
+  seal_error,
+  seal_no_progress,
+  seal_partial,
+  seal_success,
+};
+
+// seal_next_message seals |msg|, which must be the next message, to |out|. If
+// progress was made, it returns |seal_partial| or |seal_success| and sets
+// |*out_len| to the number of bytes written.
+static enum seal_result_t seal_next_message(SSL *ssl, uint8_t *out,
+                                            size_t *out_len, size_t max_out,
+                                            const DTLS_OUTGOING_MESSAGE *msg) {
+  assert(ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len);
+  assert(msg == &ssl->d1->outgoing_messages[ssl->d1->outgoing_written]);
+
+  enum dtls1_use_epoch_t use_epoch = dtls1_use_current_epoch;
+  if (ssl->d1->w_epoch >= 1 && msg->epoch == ssl->d1->w_epoch - 1) {
+    use_epoch = dtls1_use_previous_epoch;
+  } else if (msg->epoch != ssl->d1->w_epoch) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  size_t overhead = dtls_max_seal_overhead(ssl, use_epoch);
+  size_t prefix = dtls_seal_prefix_len(ssl, use_epoch);
+
+  if (msg->is_ccs) {
+    // Check there is room for the ChangeCipherSpec.
+    static const uint8_t kChangeCipherSpec[1] = {SSL3_MT_CCS};
+    if (max_out < sizeof(kChangeCipherSpec) + overhead) {
+      return seal_no_progress;
+    }
+
+    if (!dtls_seal_record(ssl, out, out_len, max_out,
+                          SSL3_RT_CHANGE_CIPHER_SPEC, kChangeCipherSpec,
+                          sizeof(kChangeCipherSpec), use_epoch)) {
+      return seal_error;
+    }
+
+    ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                        kChangeCipherSpec);
+    return seal_success;
+  }
+
+  // DTLS messages are serialized as a single fragment in |msg|.
+  CBS cbs, body;
+  struct hm_header_st hdr;
+  CBS_init(&cbs, msg->data, msg->len);
+  if (!dtls1_parse_fragment(&cbs, &hdr, &body) ||
+      hdr.frag_off != 0 ||
+      hdr.frag_len != CBS_len(&body) ||
+      hdr.msg_len != CBS_len(&body) ||
+      !CBS_skip(&body, ssl->d1->outgoing_offset) ||
+      CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  // Determine how much progress can be made.
+  if (max_out < DTLS1_HM_HEADER_LENGTH + 1 + overhead || max_out < prefix) {
+    return seal_no_progress;
+  }
+  size_t todo = CBS_len(&body);
+  if (todo > max_out - DTLS1_HM_HEADER_LENGTH - overhead) {
+    todo = max_out - DTLS1_HM_HEADER_LENGTH - overhead;
+  }
+
+  // Assemble a fragment, to be sealed in-place.
+  ScopedCBB cbb;
+  uint8_t *frag = out + prefix;
+  size_t max_frag = max_out - prefix, frag_len;
+  if (!CBB_init_fixed(cbb.get(), frag, max_frag) ||
+      !CBB_add_u8(cbb.get(), hdr.type) ||
+      !CBB_add_u24(cbb.get(), hdr.msg_len) ||
+      !CBB_add_u16(cbb.get(), hdr.seq) ||
+      !CBB_add_u24(cbb.get(), ssl->d1->outgoing_offset) ||
+      !CBB_add_u24(cbb.get(), todo) ||
+      !CBB_add_bytes(cbb.get(), CBS_data(&body), todo) ||
+      !CBB_finish(cbb.get(), NULL, &frag_len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HANDSHAKE,
+                      MakeSpan(frag, frag_len));
+
+  if (!dtls_seal_record(ssl, out, out_len, max_out, SSL3_RT_HANDSHAKE,
+                        out + prefix, frag_len, use_epoch)) {
+    return seal_error;
+  }
+
+  if (todo == CBS_len(&body)) {
+    // The next message is complete.
+    ssl->d1->outgoing_offset = 0;
+    return seal_success;
+  }
+
+  ssl->d1->outgoing_offset += todo;
+  return seal_partial;
+}
+
+// seal_next_packet writes as much of the next flight as possible to |out| and
+// advances |ssl->d1->outgoing_written| and |ssl->d1->outgoing_offset| as
+// appropriate.
+static bool seal_next_packet(SSL *ssl, uint8_t *out, size_t *out_len,
+                             size_t max_out) {
+  bool made_progress = false;
+  size_t total = 0;
+  assert(ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len);
+  for (; ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len;
+       ssl->d1->outgoing_written++) {
+    const DTLS_OUTGOING_MESSAGE *msg =
+        &ssl->d1->outgoing_messages[ssl->d1->outgoing_written];
+    size_t len;
+    enum seal_result_t ret = seal_next_message(ssl, out, &len, max_out, msg);
+    switch (ret) {
+      case seal_error:
+        return false;
+
+      case seal_no_progress:
+        goto packet_full;
+
+      case seal_partial:
+      case seal_success:
+        out += len;
+        max_out -= len;
+        total += len;
+        made_progress = true;
+
+        if (ret == seal_partial) {
+          goto packet_full;
+        }
+        break;
+    }
+  }
+
+packet_full:
+  // The MTU was too small to make any progress.
+  if (!made_progress) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MTU_TOO_SMALL);
+    return false;
+  }
+
+  *out_len = total;
+  return true;
+}
+
+static int send_flight(SSL *ssl) {
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  dtls1_update_mtu(ssl);
+
+  int ret = -1;
+  uint8_t *packet = (uint8_t *)OPENSSL_malloc(ssl->d1->mtu);
+  if (packet == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  while (ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len) {
+    uint8_t old_written = ssl->d1->outgoing_written;
+    uint32_t old_offset = ssl->d1->outgoing_offset;
+
+    size_t packet_len;
+    if (!seal_next_packet(ssl, packet, &packet_len, ssl->d1->mtu)) {
+      goto err;
+    }
+
+    int bio_ret = BIO_write(ssl->wbio.get(), packet, packet_len);
+    if (bio_ret <= 0) {
+      // Retry this packet the next time around.
+      ssl->d1->outgoing_written = old_written;
+      ssl->d1->outgoing_offset = old_offset;
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      ret = bio_ret;
+      goto err;
+    }
+  }
+
+  if (BIO_flush(ssl->wbio.get()) <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(packet);
+  return ret;
+}
+
+int dtls1_flush_flight(SSL *ssl) {
+  ssl->d1->outgoing_messages_complete = true;
+  // Start the retransmission timer for the next flight (if any).
+  dtls1_start_timer(ssl);
+  return send_flight(ssl);
+}
+
+int dtls1_retransmit_outgoing_messages(SSL *ssl) {
+  // Rewind to the start of the flight and write it again.
+  //
+  // TODO(davidben): This does not allow retransmits to be resumed on
+  // non-blocking write.
+  ssl->d1->outgoing_written = 0;
+  ssl->d1->outgoing_offset = 0;
+
+  return send_flight(ssl);
+}
+
+unsigned int dtls1_min_mtu(void) {
+  return kMinMTU;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc.grpc_back
new file mode 100644
index 0000000..2b652d1
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_both.cc.grpc_back	
@@ -0,0 +1,841 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// TODO(davidben): 28 comes from the size of IP + UDP header. Is this reasonable
+// for these values? Notably, why is kMinMTU a function of the transport
+// protocol's overhead rather than, say, what's needed to hold a minimally-sized
+// handshake fragment plus protocol overhead.
+
+// kMinMTU is the minimum acceptable MTU value.
+static const unsigned int kMinMTU = 256 - 28;
+
+// kDefaultMTU is the default MTU value to use if neither the user nor
+// the underlying BIO supplies one.
+static const unsigned int kDefaultMTU = 1500 - 28;
+
+
+// Receiving handshake messages.
+
+hm_fragment::~hm_fragment() {
+  OPENSSL_free(data);
+  OPENSSL_free(reassembly);
+}
+
+static UniquePtr<hm_fragment> dtls1_hm_fragment_new(
+    const struct hm_header_st *msg_hdr) {
+  ScopedCBB cbb;
+  UniquePtr<hm_fragment> frag = MakeUnique<hm_fragment>();
+  if (!frag) {
+    return nullptr;
+  }
+  frag->type = msg_hdr->type;
+  frag->seq = msg_hdr->seq;
+  frag->msg_len = msg_hdr->msg_len;
+
+  // Allocate space for the reassembled message and fill in the header.
+  frag->data =
+      (uint8_t *)OPENSSL_malloc(DTLS1_HM_HEADER_LENGTH + msg_hdr->msg_len);
+  if (frag->data == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  if (!CBB_init_fixed(cbb.get(), frag->data, DTLS1_HM_HEADER_LENGTH) ||
+      !CBB_add_u8(cbb.get(), msg_hdr->type) ||
+      !CBB_add_u24(cbb.get(), msg_hdr->msg_len) ||
+      !CBB_add_u16(cbb.get(), msg_hdr->seq) ||
+      !CBB_add_u24(cbb.get(), 0 /* frag_off */) ||
+      !CBB_add_u24(cbb.get(), msg_hdr->msg_len) ||
+      !CBB_finish(cbb.get(), NULL, NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  // If the handshake message is empty, |frag->reassembly| is NULL.
+  if (msg_hdr->msg_len > 0) {
+    // Initialize reassembly bitmask.
+    if (msg_hdr->msg_len + 7 < msg_hdr->msg_len) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return nullptr;
+    }
+    size_t bitmask_len = (msg_hdr->msg_len + 7) / 8;
+    frag->reassembly = (uint8_t *)OPENSSL_malloc(bitmask_len);
+    if (frag->reassembly == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+    OPENSSL_memset(frag->reassembly, 0, bitmask_len);
+  }
+
+  return frag;
+}
+
+// bit_range returns a |uint8_t| with bits |start|, inclusive, to |end|,
+// exclusive, set.
+static uint8_t bit_range(size_t start, size_t end) {
+  return (uint8_t)(~((1u << start) - 1) & ((1u << end) - 1));
+}
+
+// dtls1_hm_fragment_mark marks bytes |start|, inclusive, to |end|, exclusive,
+// as received in |frag|. If |frag| becomes complete, it clears
+// |frag->reassembly|. The range must be within the bounds of |frag|'s message
+// and |frag->reassembly| must not be NULL.
+static void dtls1_hm_fragment_mark(hm_fragment *frag, size_t start,
+                                   size_t end) {
+  size_t msg_len = frag->msg_len;
+
+  if (frag->reassembly == NULL || start > end || end > msg_len) {
+    assert(0);
+    return;
+  }
+  // A zero-length message will never have a pending reassembly.
+  assert(msg_len > 0);
+
+  if (start == end) {
+    return;
+  }
+
+  if ((start >> 3) == (end >> 3)) {
+    frag->reassembly[start >> 3] |= bit_range(start & 7, end & 7);
+  } else {
+    frag->reassembly[start >> 3] |= bit_range(start & 7, 8);
+    for (size_t i = (start >> 3) + 1; i < (end >> 3); i++) {
+      frag->reassembly[i] = 0xff;
+    }
+    if ((end & 7) != 0) {
+      frag->reassembly[end >> 3] |= bit_range(0, end & 7);
+    }
+  }
+
+  // Check if the fragment is complete.
+  for (size_t i = 0; i < (msg_len >> 3); i++) {
+    if (frag->reassembly[i] != 0xff) {
+      return;
+    }
+  }
+  if ((msg_len & 7) != 0 &&
+      frag->reassembly[msg_len >> 3] != bit_range(0, msg_len & 7)) {
+    return;
+  }
+
+  OPENSSL_free(frag->reassembly);
+  frag->reassembly = NULL;
+}
+
+// dtls1_is_current_message_complete returns whether the current handshake
+// message is complete.
+static bool dtls1_is_current_message_complete(const SSL *ssl) {
+  size_t idx = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  return frag != NULL && frag->reassembly == NULL;
+}
+
+// dtls1_get_incoming_message returns the incoming message corresponding to
+// |msg_hdr|. If none exists, it creates a new one and inserts it in the
+// queue. Otherwise, it checks |msg_hdr| is consistent with the existing one. It
+// returns NULL on failure. The caller does not take ownership of the result.
+static hm_fragment *dtls1_get_incoming_message(
+    SSL *ssl, uint8_t *out_alert, const struct hm_header_st *msg_hdr) {
+  if (msg_hdr->seq < ssl->d1->handshake_read_seq ||
+      msg_hdr->seq - ssl->d1->handshake_read_seq >= SSL_MAX_HANDSHAKE_FLIGHT) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return NULL;
+  }
+
+  size_t idx = msg_hdr->seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  if (frag != NULL) {
+    assert(frag->seq == msg_hdr->seq);
+    // The new fragment must be compatible with the previous fragments from this
+    // message.
+    if (frag->type != msg_hdr->type ||
+        frag->msg_len != msg_hdr->msg_len) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_FRAGMENT_MISMATCH);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return NULL;
+    }
+    return frag;
+  }
+
+  // This is the first fragment from this message.
+  ssl->d1->incoming_messages[idx] = dtls1_hm_fragment_new(msg_hdr);
+  if (!ssl->d1->incoming_messages[idx]) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return NULL;
+  }
+  return ssl->d1->incoming_messages[idx].get();
+}
+
+ssl_open_record_t dtls1_open_handshake(SSL *ssl, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in) {
+  uint8_t type;
+  Span<uint8_t> record;
+  auto ret = dtls_open_record(ssl, &type, &record, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  switch (type) {
+    case SSL3_RT_APPLICATION_DATA:
+      // Unencrypted application data records are always illegal.
+      if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return ssl_open_record_error;
+      }
+
+      // Out-of-order application data may be received between ChangeCipherSpec
+      // and finished. Discard it.
+      return ssl_open_record_discard;
+
+    case SSL3_RT_CHANGE_CIPHER_SPEC:
+      // We do not support renegotiation, so encrypted ChangeCipherSpec records
+      // are illegal.
+      if (!ssl->s3->aead_read_ctx->is_null_cipher()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return ssl_open_record_error;
+      }
+
+      if (record.size() != 1u || record[0] != SSL3_MT_CCS) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC);
+        *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+        return ssl_open_record_error;
+      }
+
+      // Flag the ChangeCipherSpec for later.
+      ssl->d1->has_change_cipher_spec = true;
+      ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                          record);
+      return ssl_open_record_success;
+
+    case SSL3_RT_HANDSHAKE:
+      // Break out to main processing.
+      break;
+
+    default:
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, record.data(), record.size());
+  while (CBS_len(&cbs) > 0) {
+    // Read a handshake fragment.
+    struct hm_header_st msg_hdr;
+    CBS body;
+    if (!dtls1_parse_fragment(&cbs, &msg_hdr, &body)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HANDSHAKE_RECORD);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    const size_t frag_off = msg_hdr.frag_off;
+    const size_t frag_len = msg_hdr.frag_len;
+    const size_t msg_len = msg_hdr.msg_len;
+    if (frag_off > msg_len || frag_off + frag_len < frag_off ||
+        frag_off + frag_len > msg_len ||
+        msg_len > ssl_max_handshake_message_len(ssl)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return ssl_open_record_error;
+    }
+
+    // The encrypted epoch in DTLS has only one handshake message.
+    if (ssl->d1->r_epoch == 1 && msg_hdr.seq != ssl->d1->handshake_read_seq) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+
+    if (msg_hdr.seq < ssl->d1->handshake_read_seq ||
+        msg_hdr.seq >
+            (unsigned)ssl->d1->handshake_read_seq + SSL_MAX_HANDSHAKE_FLIGHT) {
+      // Ignore fragments from the past, or ones too far in the future.
+      continue;
+    }
+
+    hm_fragment *frag = dtls1_get_incoming_message(ssl, out_alert, &msg_hdr);
+    if (frag == NULL) {
+      return ssl_open_record_error;
+    }
+    assert(frag->msg_len == msg_len);
+
+    if (frag->reassembly == NULL) {
+      // The message is already assembled.
+      continue;
+    }
+    assert(msg_len > 0);
+
+    // Copy the body into the fragment.
+    OPENSSL_memcpy(frag->data + DTLS1_HM_HEADER_LENGTH + frag_off,
+                   CBS_data(&body), CBS_len(&body));
+    dtls1_hm_fragment_mark(frag, frag_off, frag_off + frag_len);
+  }
+
+  return ssl_open_record_success;
+}
+
+bool dtls1_get_message(const SSL *ssl, SSLMessage *out) {
+  if (!dtls1_is_current_message_complete(ssl)) {
+    return false;
+  }
+
+  size_t idx = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  hm_fragment *frag = ssl->d1->incoming_messages[idx].get();
+  out->type = frag->type;
+  CBS_init(&out->body, frag->data + DTLS1_HM_HEADER_LENGTH, frag->msg_len);
+  CBS_init(&out->raw, frag->data, DTLS1_HM_HEADER_LENGTH + frag->msg_len);
+  out->is_v2_hello = false;
+  if (!ssl->s3->has_message) {
+    ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HANDSHAKE, out->raw);
+    ssl->s3->has_message = true;
+  }
+  return true;
+}
+
+void dtls1_next_message(SSL *ssl) {
+  assert(ssl->s3->has_message);
+  assert(dtls1_is_current_message_complete(ssl));
+  size_t index = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  ssl->d1->incoming_messages[index].reset();
+  ssl->d1->handshake_read_seq++;
+  ssl->s3->has_message = false;
+  // If we previously sent a flight, mark it as having a reply, so
+  // |on_handshake_complete| can manage post-handshake retransmission.
+  if (ssl->d1->outgoing_messages_complete) {
+    ssl->d1->flight_has_reply = true;
+  }
+}
+
+bool dtls_has_unprocessed_handshake_data(const SSL *ssl) {
+  if (ssl->d1->has_change_cipher_spec) {
+    return true;
+  }
+
+  size_t current = ssl->d1->handshake_read_seq % SSL_MAX_HANDSHAKE_FLIGHT;
+  for (size_t i = 0; i < SSL_MAX_HANDSHAKE_FLIGHT; i++) {
+    // Skip the current message.
+    if (ssl->s3->has_message && i == current) {
+      assert(dtls1_is_current_message_complete(ssl));
+      continue;
+    }
+    if (ssl->d1->incoming_messages[i] != nullptr) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool dtls1_parse_fragment(CBS *cbs, struct hm_header_st *out_hdr,
+                          CBS *out_body) {
+  OPENSSL_memset(out_hdr, 0x00, sizeof(struct hm_header_st));
+
+  if (!CBS_get_u8(cbs, &out_hdr->type) ||
+      !CBS_get_u24(cbs, &out_hdr->msg_len) ||
+      !CBS_get_u16(cbs, &out_hdr->seq) ||
+      !CBS_get_u24(cbs, &out_hdr->frag_off) ||
+      !CBS_get_u24(cbs, &out_hdr->frag_len) ||
+      !CBS_get_bytes(cbs, out_body, out_hdr->frag_len)) {
+    return false;
+  }
+
+  return true;
+}
+
+ssl_open_record_t dtls1_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                                uint8_t *out_alert,
+                                                Span<uint8_t> in) {
+  if (!ssl->d1->has_change_cipher_spec) {
+    // dtls1_open_handshake processes both handshake and ChangeCipherSpec.
+    auto ret = dtls1_open_handshake(ssl, out_consumed, out_alert, in);
+    if (ret != ssl_open_record_success) {
+      return ret;
+    }
+  }
+  if (ssl->d1->has_change_cipher_spec) {
+    ssl->d1->has_change_cipher_spec = false;
+    return ssl_open_record_success;
+  }
+  return ssl_open_record_discard;
+}
+
+
+// Sending handshake messages.
+
+void DTLS_OUTGOING_MESSAGE::Clear() {
+  OPENSSL_free(data);
+  data = nullptr;
+}
+
+void dtls_clear_outgoing_messages(SSL *ssl) {
+  for (size_t i = 0; i < ssl->d1->outgoing_messages_len; i++) {
+    ssl->d1->outgoing_messages[i].Clear();
+  }
+  ssl->d1->outgoing_messages_len = 0;
+  ssl->d1->outgoing_written = 0;
+  ssl->d1->outgoing_offset = 0;
+  ssl->d1->outgoing_messages_complete = false;
+  ssl->d1->flight_has_reply = false;
+}
+
+bool dtls1_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type) {
+  // Pick a modest size hint to save most of the |realloc| calls.
+  if (!CBB_init(cbb, 64) ||
+      !CBB_add_u8(cbb, type) ||
+      !CBB_add_u24(cbb, 0 /* length (filled in later) */) ||
+      !CBB_add_u16(cbb, ssl->d1->handshake_write_seq) ||
+      !CBB_add_u24(cbb, 0 /* offset */) ||
+      !CBB_add_u24_length_prefixed(cbb, body)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool dtls1_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg) {
+  if (!CBBFinishArray(cbb, out_msg) ||
+      out_msg->size() < DTLS1_HM_HEADER_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Fix up the header. Copy the fragment length into the total message
+  // length.
+  OPENSSL_memcpy(out_msg->data() + 1,
+                 out_msg->data() + DTLS1_HM_HEADER_LENGTH - 3, 3);
+  return true;
+}
+
+// ssl_size_t_greater_than_32_bits returns whether |v| exceeds the bounds of a
+// 32-bit value. The obvious thing doesn't work because, in some 32-bit build
+// configurations, the compiler warns that the test is always false and breaks
+// the build.
+static bool ssl_size_t_greater_than_32_bits(size_t v) {
+#if defined(OPENSSL_64_BIT)
+  return v > 0xffffffff;
+#elif defined(OPENSSL_32_BIT)
+  return false;
+#else
+#error "Building for neither 32- nor 64-bits."
+#endif
+}
+
+// add_outgoing adds a new handshake message or ChangeCipherSpec to the current
+// outgoing flight. It returns true on success and false on error.
+static bool add_outgoing(SSL *ssl, bool is_ccs, Array<uint8_t> data) {
+  if (ssl->d1->outgoing_messages_complete) {
+    // If we've begun writing a new flight, we received the peer flight. Discard
+    // the timer and the our flight.
+    dtls1_stop_timer(ssl);
+    dtls_clear_outgoing_messages(ssl);
+  }
+
+  static_assert(SSL_MAX_HANDSHAKE_FLIGHT <
+                    (1 << 8 * sizeof(ssl->d1->outgoing_messages_len)),
+                "outgoing_messages_len is too small");
+  if (ssl->d1->outgoing_messages_len >= SSL_MAX_HANDSHAKE_FLIGHT ||
+      ssl_size_t_greater_than_32_bits(data.size())) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!is_ccs) {
+    // TODO(svaldez): Move this up a layer to fix abstraction for SSLTranscript
+    // on hs.
+    if (ssl->s3->hs != NULL &&
+        !ssl->s3->hs->transcript.Update(data)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    ssl->d1->handshake_write_seq++;
+  }
+
+  DTLS_OUTGOING_MESSAGE *msg =
+      &ssl->d1->outgoing_messages[ssl->d1->outgoing_messages_len];
+  size_t len;
+  data.Release(&msg->data, &len);
+  msg->len = len;
+  msg->epoch = ssl->d1->w_epoch;
+  msg->is_ccs = is_ccs;
+
+  ssl->d1->outgoing_messages_len++;
+  return true;
+}
+
+bool dtls1_add_message(SSL *ssl, Array<uint8_t> data) {
+  return add_outgoing(ssl, false /* handshake */, std::move(data));
+}
+
+bool dtls1_add_change_cipher_spec(SSL *ssl) {
+  return add_outgoing(ssl, true /* ChangeCipherSpec */, Array<uint8_t>());
+}
+
+// dtls1_update_mtu updates the current MTU from the BIO, ensuring it is above
+// the minimum.
+static void dtls1_update_mtu(SSL *ssl) {
+  // TODO(davidben): No consumer implements |BIO_CTRL_DGRAM_SET_MTU| and the
+  // only |BIO_CTRL_DGRAM_QUERY_MTU| implementation could use
+  // |SSL_set_mtu|. Does this need to be so complex?
+  if (ssl->d1->mtu < dtls1_min_mtu() &&
+      !(SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    long mtu = BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
+    if (mtu >= 0 && mtu <= (1 << 30) && (unsigned)mtu >= dtls1_min_mtu()) {
+      ssl->d1->mtu = (unsigned)mtu;
+    } else {
+      ssl->d1->mtu = kDefaultMTU;
+      BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_SET_MTU, ssl->d1->mtu, NULL);
+    }
+  }
+
+  // The MTU should be above the minimum now.
+  assert(ssl->d1->mtu >= dtls1_min_mtu());
+}
+
+enum seal_result_t {
+  seal_error,
+  seal_no_progress,
+  seal_partial,
+  seal_success,
+};
+
+// seal_next_message seals |msg|, which must be the next message, to |out|. If
+// progress was made, it returns |seal_partial| or |seal_success| and sets
+// |*out_len| to the number of bytes written.
+static enum seal_result_t seal_next_message(SSL *ssl, uint8_t *out,
+                                            size_t *out_len, size_t max_out,
+                                            const DTLS_OUTGOING_MESSAGE *msg) {
+  assert(ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len);
+  assert(msg == &ssl->d1->outgoing_messages[ssl->d1->outgoing_written]);
+
+  enum dtls1_use_epoch_t use_epoch = dtls1_use_current_epoch;
+  if (ssl->d1->w_epoch >= 1 && msg->epoch == ssl->d1->w_epoch - 1) {
+    use_epoch = dtls1_use_previous_epoch;
+  } else if (msg->epoch != ssl->d1->w_epoch) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  size_t overhead = dtls_max_seal_overhead(ssl, use_epoch);
+  size_t prefix = dtls_seal_prefix_len(ssl, use_epoch);
+
+  if (msg->is_ccs) {
+    // Check there is room for the ChangeCipherSpec.
+    static const uint8_t kChangeCipherSpec[1] = {SSL3_MT_CCS};
+    if (max_out < sizeof(kChangeCipherSpec) + overhead) {
+      return seal_no_progress;
+    }
+
+    if (!dtls_seal_record(ssl, out, out_len, max_out,
+                          SSL3_RT_CHANGE_CIPHER_SPEC, kChangeCipherSpec,
+                          sizeof(kChangeCipherSpec), use_epoch)) {
+      return seal_error;
+    }
+
+    ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                        kChangeCipherSpec);
+    return seal_success;
+  }
+
+  // DTLS messages are serialized as a single fragment in |msg|.
+  CBS cbs, body;
+  struct hm_header_st hdr;
+  CBS_init(&cbs, msg->data, msg->len);
+  if (!dtls1_parse_fragment(&cbs, &hdr, &body) ||
+      hdr.frag_off != 0 ||
+      hdr.frag_len != CBS_len(&body) ||
+      hdr.msg_len != CBS_len(&body) ||
+      !CBS_skip(&body, ssl->d1->outgoing_offset) ||
+      CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  // Determine how much progress can be made.
+  if (max_out < DTLS1_HM_HEADER_LENGTH + 1 + overhead || max_out < prefix) {
+    return seal_no_progress;
+  }
+  size_t todo = CBS_len(&body);
+  if (todo > max_out - DTLS1_HM_HEADER_LENGTH - overhead) {
+    todo = max_out - DTLS1_HM_HEADER_LENGTH - overhead;
+  }
+
+  // Assemble a fragment, to be sealed in-place.
+  ScopedCBB cbb;
+  uint8_t *frag = out + prefix;
+  size_t max_frag = max_out - prefix, frag_len;
+  if (!CBB_init_fixed(cbb.get(), frag, max_frag) ||
+      !CBB_add_u8(cbb.get(), hdr.type) ||
+      !CBB_add_u24(cbb.get(), hdr.msg_len) ||
+      !CBB_add_u16(cbb.get(), hdr.seq) ||
+      !CBB_add_u24(cbb.get(), ssl->d1->outgoing_offset) ||
+      !CBB_add_u24(cbb.get(), todo) ||
+      !CBB_add_bytes(cbb.get(), CBS_data(&body), todo) ||
+      !CBB_finish(cbb.get(), NULL, &frag_len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return seal_error;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HANDSHAKE,
+                      MakeSpan(frag, frag_len));
+
+  if (!dtls_seal_record(ssl, out, out_len, max_out, SSL3_RT_HANDSHAKE,
+                        out + prefix, frag_len, use_epoch)) {
+    return seal_error;
+  }
+
+  if (todo == CBS_len(&body)) {
+    // The next message is complete.
+    ssl->d1->outgoing_offset = 0;
+    return seal_success;
+  }
+
+  ssl->d1->outgoing_offset += todo;
+  return seal_partial;
+}
+
+// seal_next_packet writes as much of the next flight as possible to |out| and
+// advances |ssl->d1->outgoing_written| and |ssl->d1->outgoing_offset| as
+// appropriate.
+static bool seal_next_packet(SSL *ssl, uint8_t *out, size_t *out_len,
+                             size_t max_out) {
+  bool made_progress = false;
+  size_t total = 0;
+  assert(ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len);
+  for (; ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len;
+       ssl->d1->outgoing_written++) {
+    const DTLS_OUTGOING_MESSAGE *msg =
+        &ssl->d1->outgoing_messages[ssl->d1->outgoing_written];
+    size_t len;
+    enum seal_result_t ret = seal_next_message(ssl, out, &len, max_out, msg);
+    switch (ret) {
+      case seal_error:
+        return false;
+
+      case seal_no_progress:
+        goto packet_full;
+
+      case seal_partial:
+      case seal_success:
+        out += len;
+        max_out -= len;
+        total += len;
+        made_progress = true;
+
+        if (ret == seal_partial) {
+          goto packet_full;
+        }
+        break;
+    }
+  }
+
+packet_full:
+  // The MTU was too small to make any progress.
+  if (!made_progress) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MTU_TOO_SMALL);
+    return false;
+  }
+
+  *out_len = total;
+  return true;
+}
+
+static int send_flight(SSL *ssl) {
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  dtls1_update_mtu(ssl);
+
+  int ret = -1;
+  uint8_t *packet = (uint8_t *)OPENSSL_malloc(ssl->d1->mtu);
+  if (packet == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  while (ssl->d1->outgoing_written < ssl->d1->outgoing_messages_len) {
+    uint8_t old_written = ssl->d1->outgoing_written;
+    uint32_t old_offset = ssl->d1->outgoing_offset;
+
+    size_t packet_len;
+    if (!seal_next_packet(ssl, packet, &packet_len, ssl->d1->mtu)) {
+      goto err;
+    }
+
+    int bio_ret = BIO_write(ssl->wbio.get(), packet, packet_len);
+    if (bio_ret <= 0) {
+      // Retry this packet the next time around.
+      ssl->d1->outgoing_written = old_written;
+      ssl->d1->outgoing_offset = old_offset;
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      ret = bio_ret;
+      goto err;
+    }
+  }
+
+  if (BIO_flush(ssl->wbio.get()) <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    goto err;
+  }
+
+  ret = 1;
+
+err:
+  OPENSSL_free(packet);
+  return ret;
+}
+
+int dtls1_flush_flight(SSL *ssl) {
+  ssl->d1->outgoing_messages_complete = true;
+  // Start the retransmission timer for the next flight (if any).
+  dtls1_start_timer(ssl);
+  return send_flight(ssl);
+}
+
+int dtls1_retransmit_outgoing_messages(SSL *ssl) {
+  // Rewind to the start of the flight and write it again.
+  //
+  // TODO(davidben): This does not allow retransmits to be resumed on
+  // non-blocking write.
+  ssl->d1->outgoing_written = 0;
+  ssl->d1->outgoing_offset = 0;
+
+  return send_flight(ssl);
+}
+
+unsigned int dtls1_min_mtu(void) {
+  return kMinMTU;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc
new file mode 100644
index 0000000..1180153
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc	
@@ -0,0 +1,268 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// DTLS1_MTU_TIMEOUTS is the maximum number of timeouts to expire
+// before starting to decrease the MTU.
+#define DTLS1_MTU_TIMEOUTS                     2
+
+// DTLS1_MAX_TIMEOUTS is the maximum number of timeouts to expire
+// before failing the DTLS handshake.
+#define DTLS1_MAX_TIMEOUTS                     12
+
+DTLS1_STATE::DTLS1_STATE()
+    : has_change_cipher_spec(false),
+      outgoing_messages_complete(false),
+      flight_has_reply(false) {}
+
+DTLS1_STATE::~DTLS1_STATE() {}
+
+bool dtls1_new(SSL *ssl) {
+  if (!ssl3_new(ssl)) {
+    return false;
+  }
+  UniquePtr<DTLS1_STATE> d1 = MakeUnique<DTLS1_STATE>();
+  if (!d1) {
+    ssl3_free(ssl);
+    return false;
+  }
+
+  ssl->d1 = d1.release();
+
+  // Set the version to the highest supported version.
+  //
+  // TODO(davidben): Move this field into |s3|, have it store the normalized
+  // protocol version, and implement this pre-negotiation quirk in |SSL_version|
+  // at the API boundary rather than in internal state.
+  ssl->version = DTLS1_2_VERSION;
+  return true;
+}
+
+void dtls1_free(SSL *ssl) {
+  ssl3_free(ssl);
+
+  if (ssl == NULL) {
+    return;
+  }
+
+  Delete(ssl->d1);
+  ssl->d1 = NULL;
+}
+
+void dtls1_start_timer(SSL *ssl) {
+  // If timer is not set, initialize duration (by default, 1 second)
+  if (ssl->d1->next_timeout.tv_sec == 0 && ssl->d1->next_timeout.tv_usec == 0) {
+    ssl->d1->timeout_duration_ms = ssl->initial_timeout_duration_ms;
+  }
+
+  // Set timeout to current time
+  ssl_get_current_time(ssl, &ssl->d1->next_timeout);
+
+  // Add duration to current time
+  ssl->d1->next_timeout.tv_sec += ssl->d1->timeout_duration_ms / 1000;
+  ssl->d1->next_timeout.tv_usec += (ssl->d1->timeout_duration_ms % 1000) * 1000;
+  if (ssl->d1->next_timeout.tv_usec >= 1000000) {
+    ssl->d1->next_timeout.tv_sec++;
+    ssl->d1->next_timeout.tv_usec -= 1000000;
+  }
+}
+
+bool dtls1_is_timer_expired(SSL *ssl) {
+  struct timeval timeleft;
+
+  // Get time left until timeout, return false if no timer running
+  if (!DTLSv1_get_timeout(ssl, &timeleft)) {
+    return false;
+  }
+
+  // Return false if timer is not expired yet
+  if (timeleft.tv_sec > 0 || timeleft.tv_usec > 0) {
+    return false;
+  }
+
+  // Timer expired, so return true
+  return true;
+}
+
+static void dtls1_double_timeout(SSL *ssl) {
+  ssl->d1->timeout_duration_ms *= 2;
+  if (ssl->d1->timeout_duration_ms > 60000) {
+    ssl->d1->timeout_duration_ms = 60000;
+  }
+}
+
+void dtls1_stop_timer(SSL *ssl) {
+  ssl->d1->num_timeouts = 0;
+  OPENSSL_memset(&ssl->d1->next_timeout, 0, sizeof(ssl->d1->next_timeout));
+  ssl->d1->timeout_duration_ms = ssl->initial_timeout_duration_ms;
+}
+
+bool dtls1_check_timeout_num(SSL *ssl) {
+  ssl->d1->num_timeouts++;
+
+  // Reduce MTU after 2 unsuccessful retransmissions
+  if (ssl->d1->num_timeouts > DTLS1_MTU_TIMEOUTS &&
+      !(SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    long mtu =
+        BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, nullptr);
+    if (mtu >= 0 && mtu <= (1 << 30) && (unsigned)mtu >= dtls1_min_mtu()) {
+      ssl->d1->mtu = (unsigned)mtu;
+    }
+  }
+
+  if (ssl->d1->num_timeouts > DTLS1_MAX_TIMEOUTS) {
+    // fail the connection, enough alerts have been sent
+    OPENSSL_PUT_ERROR(SSL, SSL_R_READ_TIMEOUT_EXPIRED);
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+void DTLSv1_set_initial_timeout_duration(SSL *ssl, unsigned int duration_ms) {
+  ssl->initial_timeout_duration_ms = duration_ms;
+}
+
+int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out) {
+  if (!SSL_is_dtls(ssl)) {
+    return 0;
+  }
+
+  // If no timeout is set, just return 0.
+  if (ssl->d1->next_timeout.tv_sec == 0 && ssl->d1->next_timeout.tv_usec == 0) {
+    return 0;
+  }
+
+  struct OPENSSL_timeval timenow;
+  ssl_get_current_time(ssl, &timenow);
+
+  // If timer already expired, set remaining time to 0.
+  if (ssl->d1->next_timeout.tv_sec < timenow.tv_sec ||
+      (ssl->d1->next_timeout.tv_sec == timenow.tv_sec &&
+       ssl->d1->next_timeout.tv_usec <= timenow.tv_usec)) {
+    OPENSSL_memset(out, 0, sizeof(*out));
+    return 1;
+  }
+
+  // Calculate time left until timer expires.
+  struct OPENSSL_timeval ret;
+  OPENSSL_memcpy(&ret, &ssl->d1->next_timeout, sizeof(ret));
+  ret.tv_sec -= timenow.tv_sec;
+  if (ret.tv_usec >= timenow.tv_usec) {
+    ret.tv_usec -= timenow.tv_usec;
+  } else {
+    ret.tv_usec = 1000000 + ret.tv_usec - timenow.tv_usec;
+    ret.tv_sec--;
+  }
+
+  // If remaining time is less than 15 ms, set it to 0 to prevent issues
+  // because of small divergences with socket timeouts.
+  if (ret.tv_sec == 0 && ret.tv_usec < 15000) {
+    OPENSSL_memset(&ret, 0, sizeof(ret));
+  }
+
+  // Clamp the result in case of overflow.
+  if (ret.tv_sec > INT_MAX) {
+    assert(0);
+    out->tv_sec = INT_MAX;
+  } else {
+    out->tv_sec = ret.tv_sec;
+  }
+
+  out->tv_usec = ret.tv_usec;
+  return 1;
+}
+
+int DTLSv1_handle_timeout(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (!SSL_is_dtls(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return -1;
+  }
+
+  // If no timer is expired, don't do anything.
+  if (!dtls1_is_timer_expired(ssl)) {
+    return 0;
+  }
+
+  if (!dtls1_check_timeout_num(ssl)) {
+    return -1;
+  }
+
+  dtls1_double_timeout(ssl);
+  dtls1_start_timer(ssl);
+  return dtls1_retransmit_outgoing_messages(ssl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc.grpc_back
new file mode 100644
index 0000000..0e0b211
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_lib.cc.grpc_back	
@@ -0,0 +1,268 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// DTLS1_MTU_TIMEOUTS is the maximum number of timeouts to expire
+// before starting to decrease the MTU.
+#define DTLS1_MTU_TIMEOUTS                     2
+
+// DTLS1_MAX_TIMEOUTS is the maximum number of timeouts to expire
+// before failing the DTLS handshake.
+#define DTLS1_MAX_TIMEOUTS                     12
+
+DTLS1_STATE::DTLS1_STATE()
+    : has_change_cipher_spec(false),
+      outgoing_messages_complete(false),
+      flight_has_reply(false) {}
+
+DTLS1_STATE::~DTLS1_STATE() {}
+
+bool dtls1_new(SSL *ssl) {
+  if (!ssl3_new(ssl)) {
+    return false;
+  }
+  UniquePtr<DTLS1_STATE> d1 = MakeUnique<DTLS1_STATE>();
+  if (!d1) {
+    ssl3_free(ssl);
+    return false;
+  }
+
+  ssl->d1 = d1.release();
+
+  // Set the version to the highest supported version.
+  //
+  // TODO(davidben): Move this field into |s3|, have it store the normalized
+  // protocol version, and implement this pre-negotiation quirk in |SSL_version|
+  // at the API boundary rather than in internal state.
+  ssl->version = DTLS1_2_VERSION;
+  return true;
+}
+
+void dtls1_free(SSL *ssl) {
+  ssl3_free(ssl);
+
+  if (ssl == NULL) {
+    return;
+  }
+
+  Delete(ssl->d1);
+  ssl->d1 = NULL;
+}
+
+void dtls1_start_timer(SSL *ssl) {
+  // If timer is not set, initialize duration (by default, 1 second)
+  if (ssl->d1->next_timeout.tv_sec == 0 && ssl->d1->next_timeout.tv_usec == 0) {
+    ssl->d1->timeout_duration_ms = ssl->initial_timeout_duration_ms;
+  }
+
+  // Set timeout to current time
+  ssl_get_current_time(ssl, &ssl->d1->next_timeout);
+
+  // Add duration to current time
+  ssl->d1->next_timeout.tv_sec += ssl->d1->timeout_duration_ms / 1000;
+  ssl->d1->next_timeout.tv_usec += (ssl->d1->timeout_duration_ms % 1000) * 1000;
+  if (ssl->d1->next_timeout.tv_usec >= 1000000) {
+    ssl->d1->next_timeout.tv_sec++;
+    ssl->d1->next_timeout.tv_usec -= 1000000;
+  }
+}
+
+bool dtls1_is_timer_expired(SSL *ssl) {
+  struct timeval timeleft;
+
+  // Get time left until timeout, return false if no timer running
+  if (!DTLSv1_get_timeout(ssl, &timeleft)) {
+    return false;
+  }
+
+  // Return false if timer is not expired yet
+  if (timeleft.tv_sec > 0 || timeleft.tv_usec > 0) {
+    return false;
+  }
+
+  // Timer expired, so return true
+  return true;
+}
+
+static void dtls1_double_timeout(SSL *ssl) {
+  ssl->d1->timeout_duration_ms *= 2;
+  if (ssl->d1->timeout_duration_ms > 60000) {
+    ssl->d1->timeout_duration_ms = 60000;
+  }
+}
+
+void dtls1_stop_timer(SSL *ssl) {
+  ssl->d1->num_timeouts = 0;
+  OPENSSL_memset(&ssl->d1->next_timeout, 0, sizeof(ssl->d1->next_timeout));
+  ssl->d1->timeout_duration_ms = ssl->initial_timeout_duration_ms;
+}
+
+bool dtls1_check_timeout_num(SSL *ssl) {
+  ssl->d1->num_timeouts++;
+
+  // Reduce MTU after 2 unsuccessful retransmissions
+  if (ssl->d1->num_timeouts > DTLS1_MTU_TIMEOUTS &&
+      !(SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    long mtu =
+        BIO_ctrl(ssl->wbio.get(), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, nullptr);
+    if (mtu >= 0 && mtu <= (1 << 30) && (unsigned)mtu >= dtls1_min_mtu()) {
+      ssl->d1->mtu = (unsigned)mtu;
+    }
+  }
+
+  if (ssl->d1->num_timeouts > DTLS1_MAX_TIMEOUTS) {
+    // fail the connection, enough alerts have been sent
+    OPENSSL_PUT_ERROR(SSL, SSL_R_READ_TIMEOUT_EXPIRED);
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+void DTLSv1_set_initial_timeout_duration(SSL *ssl, unsigned int duration_ms) {
+  ssl->initial_timeout_duration_ms = duration_ms;
+}
+
+int DTLSv1_get_timeout(const SSL *ssl, struct timeval *out) {
+  if (!SSL_is_dtls(ssl)) {
+    return 0;
+  }
+
+  // If no timeout is set, just return 0.
+  if (ssl->d1->next_timeout.tv_sec == 0 && ssl->d1->next_timeout.tv_usec == 0) {
+    return 0;
+  }
+
+  struct OPENSSL_timeval timenow;
+  ssl_get_current_time(ssl, &timenow);
+
+  // If timer already expired, set remaining time to 0.
+  if (ssl->d1->next_timeout.tv_sec < timenow.tv_sec ||
+      (ssl->d1->next_timeout.tv_sec == timenow.tv_sec &&
+       ssl->d1->next_timeout.tv_usec <= timenow.tv_usec)) {
+    OPENSSL_memset(out, 0, sizeof(*out));
+    return 1;
+  }
+
+  // Calculate time left until timer expires.
+  struct OPENSSL_timeval ret;
+  OPENSSL_memcpy(&ret, &ssl->d1->next_timeout, sizeof(ret));
+  ret.tv_sec -= timenow.tv_sec;
+  if (ret.tv_usec >= timenow.tv_usec) {
+    ret.tv_usec -= timenow.tv_usec;
+  } else {
+    ret.tv_usec = 1000000 + ret.tv_usec - timenow.tv_usec;
+    ret.tv_sec--;
+  }
+
+  // If remaining time is less than 15 ms, set it to 0 to prevent issues
+  // because of small divergences with socket timeouts.
+  if (ret.tv_sec == 0 && ret.tv_usec < 15000) {
+    OPENSSL_memset(&ret, 0, sizeof(ret));
+  }
+
+  // Clamp the result in case of overflow.
+  if (ret.tv_sec > INT_MAX) {
+    assert(0);
+    out->tv_sec = INT_MAX;
+  } else {
+    out->tv_sec = ret.tv_sec;
+  }
+
+  out->tv_usec = ret.tv_usec;
+  return 1;
+}
+
+int DTLSv1_handle_timeout(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (!SSL_is_dtls(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return -1;
+  }
+
+  // If no timer is expired, don't do anything.
+  if (!dtls1_is_timer_expired(ssl)) {
+    return 0;
+  }
+
+  if (!dtls1_check_timeout_num(ssl)) {
+    return -1;
+  }
+
+  dtls1_double_timeout(ssl);
+  dtls1_start_timer(ssl);
+  return dtls1_retransmit_outgoing_messages(ssl);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc
new file mode 100644
index 0000000..a34e951
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc	
@@ -0,0 +1,273 @@
+/* DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+ssl_open_record_t dtls1_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                      size_t *out_consumed, uint8_t *out_alert,
+                                      Span<uint8_t> in) {
+  assert(!SSL_in_init(ssl));
+
+  uint8_t type;
+  Span<uint8_t> record;
+  auto ret = dtls_open_record(ssl, &type, &record, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  if (type == SSL3_RT_HANDSHAKE) {
+    // Parse the first fragment header to determine if this is a pre-CCS or
+    // post-CCS handshake record. DTLS resets handshake message numbers on each
+    // handshake, so renegotiations and retransmissions are ambiguous.
+    CBS cbs, body;
+    struct hm_header_st msg_hdr;
+    CBS_init(&cbs, record.data(), record.size());
+    if (!dtls1_parse_fragment(&cbs, &msg_hdr, &body)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HANDSHAKE_RECORD);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    if (msg_hdr.type == SSL3_MT_FINISHED &&
+        msg_hdr.seq == ssl->d1->handshake_read_seq - 1) {
+      if (msg_hdr.frag_off == 0) {
+        // Retransmit our last flight of messages. If the peer sends the second
+        // Finished, they may not have received ours. Only do this for the
+        // first fragment, in case the Finished was fragmented.
+        if (!dtls1_check_timeout_num(ssl)) {
+          *out_alert = 0;  // TODO(davidben): Send an alert?
+          return ssl_open_record_error;
+        }
+
+        dtls1_retransmit_outgoing_messages(ssl);
+      }
+      return ssl_open_record_discard;
+    }
+
+    // Otherwise, this is a pre-CCS handshake message from an unsupported
+    // renegotiation attempt. Fall through to the error path.
+  }
+
+  if (type != SSL3_RT_APPLICATION_DATA) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (record.empty()) {
+    return ssl_open_record_discard;
+  }
+
+  *out = record;
+  return ssl_open_record_success;
+}
+
+int dtls1_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *in,
+                         int len) {
+  assert(!SSL_in_init(ssl));
+  *out_needs_handshake = false;
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
+    return -1;
+  }
+
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_LENGTH);
+    return -1;
+  }
+
+  if (len == 0) {
+    return 0;
+  }
+
+  int ret = dtls1_write_record(ssl, SSL3_RT_APPLICATION_DATA, in, (size_t)len,
+                               dtls1_use_current_epoch);
+  if (ret <= 0) {
+    return ret;
+  }
+  return len;
+}
+
+int dtls1_write_record(SSL *ssl, int type, const uint8_t *in, size_t len,
+                       enum dtls1_use_epoch_t use_epoch) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  assert(len <= SSL3_RT_MAX_PLAIN_LENGTH);
+  // There should never be a pending write buffer in DTLS. One can't write half
+  // a datagram, so the write buffer is always dropped in
+  // |ssl_write_buffer_flush|.
+  assert(buf->empty());
+
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  size_t ciphertext_len;
+  if (!buf->EnsureCap(ssl_seal_align_prefix_len(ssl),
+                      len + SSL_max_seal_overhead(ssl)) ||
+      !dtls_seal_record(ssl, buf->remaining().data(), &ciphertext_len,
+                        buf->remaining().size(), type, in, len, use_epoch)) {
+    buf->Clear();
+    return -1;
+  }
+  buf->DidWrite(ciphertext_len);
+
+  int ret = ssl_write_buffer_flush(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  return 1;
+}
+
+int dtls1_dispatch_alert(SSL *ssl) {
+  int ret = dtls1_write_record(ssl, SSL3_RT_ALERT, &ssl->s3->send_alert[0], 2,
+                               dtls1_use_current_epoch);
+  if (ret <= 0) {
+    return ret;
+  }
+  ssl->s3->alert_dispatch = false;
+
+  // If the alert is fatal, flush the BIO now.
+  if (ssl->s3->send_alert[0] == SSL3_AL_FATAL) {
+    BIO_flush(ssl->wbio.get());
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_ALERT, ssl->s3->send_alert);
+
+  int alert = (ssl->s3->send_alert[0] << 8) | ssl->s3->send_alert[1];
+  ssl_do_info_callback(ssl, SSL_CB_WRITE_ALERT, alert);
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc.grpc_back
new file mode 100644
index 0000000..b9b0ef9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_pkt.cc.grpc_back	
@@ -0,0 +1,273 @@
+/* DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bio.h>
+#include <openssl/bytestring.h>
+#include <openssl/mem.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+ssl_open_record_t dtls1_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                      size_t *out_consumed, uint8_t *out_alert,
+                                      Span<uint8_t> in) {
+  assert(!SSL_in_init(ssl));
+
+  uint8_t type;
+  Span<uint8_t> record;
+  auto ret = dtls_open_record(ssl, &type, &record, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  if (type == SSL3_RT_HANDSHAKE) {
+    // Parse the first fragment header to determine if this is a pre-CCS or
+    // post-CCS handshake record. DTLS resets handshake message numbers on each
+    // handshake, so renegotiations and retransmissions are ambiguous.
+    CBS cbs, body;
+    struct hm_header_st msg_hdr;
+    CBS_init(&cbs, record.data(), record.size());
+    if (!dtls1_parse_fragment(&cbs, &msg_hdr, &body)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HANDSHAKE_RECORD);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    if (msg_hdr.type == SSL3_MT_FINISHED &&
+        msg_hdr.seq == ssl->d1->handshake_read_seq - 1) {
+      if (msg_hdr.frag_off == 0) {
+        // Retransmit our last flight of messages. If the peer sends the second
+        // Finished, they may not have received ours. Only do this for the
+        // first fragment, in case the Finished was fragmented.
+        if (!dtls1_check_timeout_num(ssl)) {
+          *out_alert = 0;  // TODO(davidben): Send an alert?
+          return ssl_open_record_error;
+        }
+
+        dtls1_retransmit_outgoing_messages(ssl);
+      }
+      return ssl_open_record_discard;
+    }
+
+    // Otherwise, this is a pre-CCS handshake message from an unsupported
+    // renegotiation attempt. Fall through to the error path.
+  }
+
+  if (type != SSL3_RT_APPLICATION_DATA) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (record.empty()) {
+    return ssl_open_record_discard;
+  }
+
+  *out = record;
+  return ssl_open_record_success;
+}
+
+int dtls1_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *in,
+                         int len) {
+  assert(!SSL_in_init(ssl));
+  *out_needs_handshake = false;
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DTLS_MESSAGE_TOO_BIG);
+    return -1;
+  }
+
+  if (len < 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_LENGTH);
+    return -1;
+  }
+
+  if (len == 0) {
+    return 0;
+  }
+
+  int ret = dtls1_write_record(ssl, SSL3_RT_APPLICATION_DATA, in, (size_t)len,
+                               dtls1_use_current_epoch);
+  if (ret <= 0) {
+    return ret;
+  }
+  return len;
+}
+
+int dtls1_write_record(SSL *ssl, int type, const uint8_t *in, size_t len,
+                       enum dtls1_use_epoch_t use_epoch) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  assert(len <= SSL3_RT_MAX_PLAIN_LENGTH);
+  // There should never be a pending write buffer in DTLS. One can't write half
+  // a datagram, so the write buffer is always dropped in
+  // |ssl_write_buffer_flush|.
+  assert(buf->empty());
+
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  size_t ciphertext_len;
+  if (!buf->EnsureCap(ssl_seal_align_prefix_len(ssl),
+                      len + SSL_max_seal_overhead(ssl)) ||
+      !dtls_seal_record(ssl, buf->remaining().data(), &ciphertext_len,
+                        buf->remaining().size(), type, in, len, use_epoch)) {
+    buf->Clear();
+    return -1;
+  }
+  buf->DidWrite(ciphertext_len);
+
+  int ret = ssl_write_buffer_flush(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  return 1;
+}
+
+int dtls1_dispatch_alert(SSL *ssl) {
+  int ret = dtls1_write_record(ssl, SSL3_RT_ALERT, &ssl->s3->send_alert[0], 2,
+                               dtls1_use_current_epoch);
+  if (ret <= 0) {
+    return ret;
+  }
+  ssl->s3->alert_dispatch = false;
+
+  // If the alert is fatal, flush the BIO now.
+  if (ssl->s3->send_alert[0] == SSL3_AL_FATAL) {
+    BIO_flush(ssl->wbio.get());
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_ALERT, ssl->s3->send_alert);
+
+  int alert = (ssl->s3->send_alert[0] << 8) | ssl->s3->send_alert[1];
+  ssl_do_info_callback(ssl, SSL_CB_WRITE_ALERT, alert);
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc
new file mode 100644
index 0000000..2f55289
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc	
@@ -0,0 +1,232 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/*
+  DTLS code by Eric Rescorla <ekr@rtfm.com>
+
+  Copyright (C) 2006, Network Resonance, Inc.
+  Copyright (C) 2011, RTFM, Inc.
+*/
+
+#include <openssl_grpc/ssl.h>
+
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+using namespace bssl;
+
+static const SRTP_PROTECTION_PROFILE kSRTPProfiles[] = {
+    {
+        "SRTP_AES128_CM_SHA1_80", SRTP_AES128_CM_SHA1_80,
+    },
+    {
+        "SRTP_AES128_CM_SHA1_32", SRTP_AES128_CM_SHA1_32,
+    },
+    {
+        "SRTP_AEAD_AES_128_GCM", SRTP_AEAD_AES_128_GCM,
+    },
+    {
+        "SRTP_AEAD_AES_256_GCM", SRTP_AEAD_AES_256_GCM,
+    },
+    {0, 0},
+};
+
+static int find_profile_by_name(const char *profile_name,
+                                const SRTP_PROTECTION_PROFILE **pptr,
+                                size_t len) {
+  const SRTP_PROTECTION_PROFILE *p = kSRTPProfiles;
+  while (p->name) {
+    if (len == strlen(p->name) && !strncmp(p->name, profile_name, len)) {
+      *pptr = p;
+      return 1;
+    }
+
+    p++;
+  }
+
+  return 0;
+}
+
+static int ssl_ctx_make_profiles(
+    const char *profiles_string,
+    UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> *out) {
+  UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> profiles(
+      sk_SRTP_PROTECTION_PROFILE_new_null());
+  if (profiles == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
+    return 0;
+  }
+
+  const char *col;
+  const char *ptr = profiles_string;
+  do {
+    col = strchr(ptr, ':');
+
+    const SRTP_PROTECTION_PROFILE *profile;
+    if (!find_profile_by_name(ptr, &profile,
+                              col ? (size_t)(col - ptr) : strlen(ptr))) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
+      return 0;
+    }
+
+    if (!sk_SRTP_PROTECTION_PROFILE_push(profiles.get(), profile)) {
+      return 0;
+    }
+
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  *out = std::move(profiles);
+  return 1;
+}
+
+int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx, const char *profiles) {
+  return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles);
+}
+
+int SSL_set_srtp_profiles(SSL *ssl, const char *profiles) {
+  return ssl->config != nullptr &&
+         ssl_ctx_make_profiles(profiles, &ssl->config->srtp_profiles);
+}
+
+STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *ssl) {
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+
+  if (ssl->config == nullptr) {
+    assert(0);
+    return nullptr;
+  }
+
+  return ssl->config->srtp_profiles != nullptr
+             ? ssl->config->srtp_profiles.get()
+             : ssl->ctx->srtp_profiles.get();
+}
+
+const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *ssl) {
+  return ssl->s3->srtp_profile;
+}
+
+int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) {
+  // This API inverts its return value.
+  return !SSL_CTX_set_srtp_profiles(ctx, profiles);
+}
+
+int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles) {
+  // This API inverts its return value.
+  return !SSL_set_srtp_profiles(ssl, profiles);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc.grpc_back
new file mode 100644
index 0000000..96d7d51
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/d1_srtp.cc.grpc_back	
@@ -0,0 +1,232 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/*
+  DTLS code by Eric Rescorla <ekr@rtfm.com>
+
+  Copyright (C) 2006, Network Resonance, Inc.
+  Copyright (C) 2011, RTFM, Inc.
+*/
+
+#include <openssl/ssl.h>
+
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+using namespace bssl;
+
+static const SRTP_PROTECTION_PROFILE kSRTPProfiles[] = {
+    {
+        "SRTP_AES128_CM_SHA1_80", SRTP_AES128_CM_SHA1_80,
+    },
+    {
+        "SRTP_AES128_CM_SHA1_32", SRTP_AES128_CM_SHA1_32,
+    },
+    {
+        "SRTP_AEAD_AES_128_GCM", SRTP_AEAD_AES_128_GCM,
+    },
+    {
+        "SRTP_AEAD_AES_256_GCM", SRTP_AEAD_AES_256_GCM,
+    },
+    {0, 0},
+};
+
+static int find_profile_by_name(const char *profile_name,
+                                const SRTP_PROTECTION_PROFILE **pptr,
+                                size_t len) {
+  const SRTP_PROTECTION_PROFILE *p = kSRTPProfiles;
+  while (p->name) {
+    if (len == strlen(p->name) && !strncmp(p->name, profile_name, len)) {
+      *pptr = p;
+      return 1;
+    }
+
+    p++;
+  }
+
+  return 0;
+}
+
+static int ssl_ctx_make_profiles(
+    const char *profiles_string,
+    UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> *out) {
+  UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> profiles(
+      sk_SRTP_PROTECTION_PROFILE_new_null());
+  if (profiles == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
+    return 0;
+  }
+
+  const char *col;
+  const char *ptr = profiles_string;
+  do {
+    col = strchr(ptr, ':');
+
+    const SRTP_PROTECTION_PROFILE *profile;
+    if (!find_profile_by_name(ptr, &profile,
+                              col ? (size_t)(col - ptr) : strlen(ptr))) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
+      return 0;
+    }
+
+    if (!sk_SRTP_PROTECTION_PROFILE_push(profiles.get(), profile)) {
+      return 0;
+    }
+
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  *out = std::move(profiles);
+  return 1;
+}
+
+int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx, const char *profiles) {
+  return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles);
+}
+
+int SSL_set_srtp_profiles(SSL *ssl, const char *profiles) {
+  return ssl->config != nullptr &&
+         ssl_ctx_make_profiles(profiles, &ssl->config->srtp_profiles);
+}
+
+STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *ssl) {
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+
+  if (ssl->config == nullptr) {
+    assert(0);
+    return nullptr;
+  }
+
+  return ssl->config->srtp_profiles != nullptr
+             ? ssl->config->srtp_profiles.get()
+             : ssl->ctx->srtp_profiles.get();
+}
+
+const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *ssl) {
+  return ssl->s3->srtp_profile;
+}
+
+int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) {
+  // This API inverts its return value.
+  return !SSL_CTX_set_srtp_profiles(ctx, profiles);
+}
+
+int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles) {
+  // This API inverts its return value.
+  return !SSL_set_srtp_profiles(ssl, profiles);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc
new file mode 100644
index 0000000..c97e1ca
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc	
@@ -0,0 +1,191 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+using namespace bssl;
+
+static void dtls1_on_handshake_complete(SSL *ssl) {
+  // Stop the reply timer left by the last flight we sent.
+  dtls1_stop_timer(ssl);
+  // If the final flight had a reply, we know the peer has received it. If not,
+  // we must leave the flight around for post-handshake retransmission.
+  if (ssl->d1->flight_has_reply) {
+    dtls_clear_outgoing_messages(ssl);
+  }
+}
+
+static bool dtls1_set_read_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  // Cipher changes are forbidden if the current epoch has leftover data.
+  if (dtls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return false;
+  }
+
+  ssl->d1->r_epoch++;
+  OPENSSL_memset(&ssl->d1->bitmap, 0, sizeof(ssl->d1->bitmap));
+  OPENSSL_memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence));
+
+  ssl->s3->aead_read_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static bool dtls1_set_write_state(SSL *ssl,
+                                  UniquePtr<SSLAEADContext> aead_ctx) {
+  ssl->d1->w_epoch++;
+  OPENSSL_memcpy(ssl->d1->last_write_sequence, ssl->s3->write_sequence,
+                 sizeof(ssl->s3->write_sequence));
+  OPENSSL_memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence));
+
+  ssl->d1->last_aead_write_ctx = std::move(ssl->s3->aead_write_ctx);
+  ssl->s3->aead_write_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static const SSL_PROTOCOL_METHOD kDTLSProtocolMethod = {
+    true /* is_dtls */,
+    dtls1_new,
+    dtls1_free,
+    dtls1_get_message,
+    dtls1_next_message,
+    dtls1_open_handshake,
+    dtls1_open_change_cipher_spec,
+    dtls1_open_app_data,
+    dtls1_write_app_data,
+    dtls1_dispatch_alert,
+    dtls1_init_message,
+    dtls1_finish_message,
+    dtls1_add_message,
+    dtls1_add_change_cipher_spec,
+    dtls1_flush_flight,
+    dtls1_on_handshake_complete,
+    dtls1_set_read_state,
+    dtls1_set_write_state,
+};
+
+const SSL_METHOD *DTLS_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *DTLS_with_buffers_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kDTLSProtocolMethod,
+      &ssl_noop_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy version-locked methods.
+
+const SSL_METHOD *DTLSv1_2_method(void) {
+  static const SSL_METHOD kMethod = {
+      DTLS1_2_VERSION,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *DTLSv1_method(void) {
+  static const SSL_METHOD kMethod = {
+      DTLS1_VERSION,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy side-specific methods.
+
+const SSL_METHOD *DTLSv1_2_server_method(void) {
+  return DTLSv1_2_method();
+}
+
+const SSL_METHOD *DTLSv1_server_method(void) {
+  return DTLSv1_method();
+}
+
+const SSL_METHOD *DTLSv1_2_client_method(void) {
+  return DTLSv1_2_method();
+}
+
+const SSL_METHOD *DTLSv1_client_method(void) {
+  return DTLSv1_method();
+}
+
+const SSL_METHOD *DTLS_server_method(void) {
+  return DTLS_method();
+}
+
+const SSL_METHOD *DTLS_client_method(void) {
+  return DTLS_method();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc.grpc_back
new file mode 100644
index 0000000..0ce7c1f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_method.cc.grpc_back	
@@ -0,0 +1,191 @@
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+using namespace bssl;
+
+static void dtls1_on_handshake_complete(SSL *ssl) {
+  // Stop the reply timer left by the last flight we sent.
+  dtls1_stop_timer(ssl);
+  // If the final flight had a reply, we know the peer has received it. If not,
+  // we must leave the flight around for post-handshake retransmission.
+  if (ssl->d1->flight_has_reply) {
+    dtls_clear_outgoing_messages(ssl);
+  }
+}
+
+static bool dtls1_set_read_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  // Cipher changes are forbidden if the current epoch has leftover data.
+  if (dtls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return false;
+  }
+
+  ssl->d1->r_epoch++;
+  OPENSSL_memset(&ssl->d1->bitmap, 0, sizeof(ssl->d1->bitmap));
+  OPENSSL_memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence));
+
+  ssl->s3->aead_read_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static bool dtls1_set_write_state(SSL *ssl,
+                                  UniquePtr<SSLAEADContext> aead_ctx) {
+  ssl->d1->w_epoch++;
+  OPENSSL_memcpy(ssl->d1->last_write_sequence, ssl->s3->write_sequence,
+                 sizeof(ssl->s3->write_sequence));
+  OPENSSL_memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence));
+
+  ssl->d1->last_aead_write_ctx = std::move(ssl->s3->aead_write_ctx);
+  ssl->s3->aead_write_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static const SSL_PROTOCOL_METHOD kDTLSProtocolMethod = {
+    true /* is_dtls */,
+    dtls1_new,
+    dtls1_free,
+    dtls1_get_message,
+    dtls1_next_message,
+    dtls1_open_handshake,
+    dtls1_open_change_cipher_spec,
+    dtls1_open_app_data,
+    dtls1_write_app_data,
+    dtls1_dispatch_alert,
+    dtls1_init_message,
+    dtls1_finish_message,
+    dtls1_add_message,
+    dtls1_add_change_cipher_spec,
+    dtls1_flush_flight,
+    dtls1_on_handshake_complete,
+    dtls1_set_read_state,
+    dtls1_set_write_state,
+};
+
+const SSL_METHOD *DTLS_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *DTLS_with_buffers_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kDTLSProtocolMethod,
+      &ssl_noop_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy version-locked methods.
+
+const SSL_METHOD *DTLSv1_2_method(void) {
+  static const SSL_METHOD kMethod = {
+      DTLS1_2_VERSION,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *DTLSv1_method(void) {
+  static const SSL_METHOD kMethod = {
+      DTLS1_VERSION,
+      &kDTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy side-specific methods.
+
+const SSL_METHOD *DTLSv1_2_server_method(void) {
+  return DTLSv1_2_method();
+}
+
+const SSL_METHOD *DTLSv1_server_method(void) {
+  return DTLSv1_method();
+}
+
+const SSL_METHOD *DTLSv1_2_client_method(void) {
+  return DTLSv1_2_method();
+}
+
+const SSL_METHOD *DTLSv1_client_method(void) {
+  return DTLSv1_method();
+}
+
+const SSL_METHOD *DTLS_server_method(void) {
+  return DTLS_method();
+}
+
+const SSL_METHOD *DTLS_client_method(void) {
+  return DTLS_method();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc
new file mode 100644
index 0000000..ed77082
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc	
@@ -0,0 +1,353 @@
+/* DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// to_u64_be treats |in| as a 8-byte big-endian integer and returns the value as
+// a |uint64_t|.
+static uint64_t to_u64_be(const uint8_t in[8]) {
+  uint64_t ret = 0;
+  unsigned i;
+  for (i = 0; i < 8; i++) {
+    ret <<= 8;
+    ret |= in[i];
+  }
+  return ret;
+}
+
+// dtls1_bitmap_should_discard returns one if |seq_num| has been seen in
+// |bitmap| or is stale. Otherwise it returns zero.
+static bool dtls1_bitmap_should_discard(DTLS1_BITMAP *bitmap,
+                                        const uint8_t seq_num[8]) {
+  const unsigned kWindowSize = sizeof(bitmap->map) * 8;
+
+  uint64_t seq_num_u = to_u64_be(seq_num);
+  if (seq_num_u > bitmap->max_seq_num) {
+    return false;
+  }
+  uint64_t idx = bitmap->max_seq_num - seq_num_u;
+  return idx >= kWindowSize || (bitmap->map & (((uint64_t)1) << idx));
+}
+
+// dtls1_bitmap_record updates |bitmap| to record receipt of sequence number
+// |seq_num|. It slides the window forward if needed. It is an error to call
+// this function on a stale sequence number.
+static void dtls1_bitmap_record(DTLS1_BITMAP *bitmap,
+                                const uint8_t seq_num[8]) {
+  const unsigned kWindowSize = sizeof(bitmap->map) * 8;
+
+  uint64_t seq_num_u = to_u64_be(seq_num);
+  // Shift the window if necessary.
+  if (seq_num_u > bitmap->max_seq_num) {
+    uint64_t shift = seq_num_u - bitmap->max_seq_num;
+    if (shift >= kWindowSize) {
+      bitmap->map = 0;
+    } else {
+      bitmap->map <<= shift;
+    }
+    bitmap->max_seq_num = seq_num_u;
+  }
+
+  uint64_t idx = bitmap->max_seq_num - seq_num_u;
+  if (idx < kWindowSize) {
+    bitmap->map |= ((uint64_t)1) << idx;
+  }
+}
+
+enum ssl_open_record_t dtls_open_record(SSL *ssl, uint8_t *out_type,
+                                        Span<uint8_t> *out,
+                                        size_t *out_consumed,
+                                        uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+    return ssl_open_record_close_notify;
+  }
+
+  if (in.empty()) {
+    return ssl_open_record_partial;
+  }
+
+  CBS cbs = CBS(in);
+
+  // Decode the record.
+  uint8_t type;
+  uint16_t version;
+  uint8_t sequence[8];
+  CBS body;
+  if (!CBS_get_u8(&cbs, &type) ||
+      !CBS_get_u16(&cbs, &version) ||
+      !CBS_copy_bytes(&cbs, sequence, 8) ||
+      !CBS_get_u16_length_prefixed(&cbs, &body) ||
+      CBS_len(&body) > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
+    // The record header was incomplete or malformed. Drop the entire packet.
+    *out_consumed = in.size();
+    return ssl_open_record_discard;
+  }
+
+  bool version_ok;
+  if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+    // Only check the first byte. Enforcing beyond that can prevent decoding
+    // version negotiation failure alerts.
+    version_ok = (version >> 8) == DTLS1_VERSION_MAJOR;
+  } else {
+    version_ok = version == ssl->s3->aead_read_ctx->RecordVersion();
+  }
+
+  if (!version_ok) {
+    // The record header was incomplete or malformed. Drop the entire packet.
+    *out_consumed = in.size();
+    return ssl_open_record_discard;
+  }
+
+  Span<const uint8_t> header = in.subspan(0, DTLS1_RT_HEADER_LENGTH);
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HEADER, header);
+
+  uint16_t epoch = (((uint16_t)sequence[0]) << 8) | sequence[1];
+  if (epoch != ssl->d1->r_epoch ||
+      dtls1_bitmap_should_discard(&ssl->d1->bitmap, sequence)) {
+    // Drop this record. It's from the wrong epoch or is a replay. Note that if
+    // |epoch| is the next epoch, the record could be buffered for later. For
+    // simplicity, drop it and expect retransmit to handle it later; DTLS must
+    // handle packet loss anyway.
+    *out_consumed = in.size() - CBS_len(&cbs);
+    return ssl_open_record_discard;
+  }
+
+  // discard the body in-place.
+  if (!ssl->s3->aead_read_ctx->Open(
+          out, type, version, sequence, header,
+          MakeSpan(const_cast<uint8_t *>(CBS_data(&body)), CBS_len(&body)))) {
+    // Bad packets are silently dropped in DTLS. See section 4.2.1 of RFC 6347.
+    // Clear the error queue of any errors decryption may have added. Drop the
+    // entire packet as it must not have come from the peer.
+    //
+    // TODO(davidben): This doesn't distinguish malloc failures from encryption
+    // failures.
+    ERR_clear_error();
+    *out_consumed = in.size() - CBS_len(&cbs);
+    return ssl_open_record_discard;
+  }
+  *out_consumed = in.size() - CBS_len(&cbs);
+
+  // Check the plaintext length.
+  if (out->size() > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  dtls1_bitmap_record(&ssl->d1->bitmap, sequence);
+
+  // TODO(davidben): Limit the number of empty records as in TLS? This is only
+  // useful if we also limit discarded packets.
+
+  if (type == SSL3_RT_ALERT) {
+    return ssl_process_alert(ssl, out_alert, *out);
+  }
+
+  ssl->s3->warning_alert_count = 0;
+
+  *out_type = type;
+  return ssl_open_record_success;
+}
+
+static const SSLAEADContext *get_write_aead(const SSL *ssl,
+                                            enum dtls1_use_epoch_t use_epoch) {
+  if (use_epoch == dtls1_use_previous_epoch) {
+    assert(ssl->d1->w_epoch >= 1);
+    return ssl->d1->last_aead_write_ctx.get();
+  }
+
+  return ssl->s3->aead_write_ctx.get();
+}
+
+size_t dtls_max_seal_overhead(const SSL *ssl,
+                              enum dtls1_use_epoch_t use_epoch) {
+  return DTLS1_RT_HEADER_LENGTH + get_write_aead(ssl, use_epoch)->MaxOverhead();
+}
+
+size_t dtls_seal_prefix_len(const SSL *ssl, enum dtls1_use_epoch_t use_epoch) {
+  return DTLS1_RT_HEADER_LENGTH +
+         get_write_aead(ssl, use_epoch)->ExplicitNonceLen();
+}
+
+bool dtls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                      uint8_t type, const uint8_t *in, size_t in_len,
+                      enum dtls1_use_epoch_t use_epoch) {
+  const size_t prefix = dtls_seal_prefix_len(ssl, use_epoch);
+  if (buffers_alias(in, in_len, out, max_out) &&
+      (max_out < prefix || out + prefix != in)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  // Determine the parameters for the current epoch.
+  uint16_t epoch = ssl->d1->w_epoch;
+  SSLAEADContext *aead = ssl->s3->aead_write_ctx.get();
+  uint8_t *seq = ssl->s3->write_sequence;
+  if (use_epoch == dtls1_use_previous_epoch) {
+    assert(ssl->d1->w_epoch >= 1);
+    epoch = ssl->d1->w_epoch - 1;
+    aead = ssl->d1->last_aead_write_ctx.get();
+    seq = ssl->d1->last_write_sequence;
+  }
+
+  if (max_out < DTLS1_RT_HEADER_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  out[0] = type;
+
+  uint16_t record_version = ssl->s3->aead_write_ctx->RecordVersion();
+  out[1] = record_version >> 8;
+  out[2] = record_version & 0xff;
+
+  out[3] = epoch >> 8;
+  out[4] = epoch & 0xff;
+  OPENSSL_memcpy(&out[5], &seq[2], 6);
+
+  size_t ciphertext_len;
+  if (!aead->CiphertextLen(&ciphertext_len, in_len, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  out[11] = ciphertext_len >> 8;
+  out[12] = ciphertext_len & 0xff;
+  Span<const uint8_t> header = MakeConstSpan(out, DTLS1_RT_HEADER_LENGTH);
+
+  size_t len_copy;
+  if (!aead->Seal(out + DTLS1_RT_HEADER_LENGTH, &len_copy,
+                  max_out - DTLS1_RT_HEADER_LENGTH, type, record_version,
+                  &out[3] /* seq */, header, in, in_len) ||
+      !ssl_record_sequence_update(&seq[2], 6)) {
+    return false;
+  }
+  assert(ciphertext_len == len_copy);
+
+  *out_len = DTLS1_RT_HEADER_LENGTH + ciphertext_len;
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HEADER, header);
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc.grpc_back
new file mode 100644
index 0000000..992fb52
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/dtls_record.cc.grpc_back	
@@ -0,0 +1,353 @@
+/* DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// to_u64_be treats |in| as a 8-byte big-endian integer and returns the value as
+// a |uint64_t|.
+static uint64_t to_u64_be(const uint8_t in[8]) {
+  uint64_t ret = 0;
+  unsigned i;
+  for (i = 0; i < 8; i++) {
+    ret <<= 8;
+    ret |= in[i];
+  }
+  return ret;
+}
+
+// dtls1_bitmap_should_discard returns one if |seq_num| has been seen in
+// |bitmap| or is stale. Otherwise it returns zero.
+static bool dtls1_bitmap_should_discard(DTLS1_BITMAP *bitmap,
+                                        const uint8_t seq_num[8]) {
+  const unsigned kWindowSize = sizeof(bitmap->map) * 8;
+
+  uint64_t seq_num_u = to_u64_be(seq_num);
+  if (seq_num_u > bitmap->max_seq_num) {
+    return false;
+  }
+  uint64_t idx = bitmap->max_seq_num - seq_num_u;
+  return idx >= kWindowSize || (bitmap->map & (((uint64_t)1) << idx));
+}
+
+// dtls1_bitmap_record updates |bitmap| to record receipt of sequence number
+// |seq_num|. It slides the window forward if needed. It is an error to call
+// this function on a stale sequence number.
+static void dtls1_bitmap_record(DTLS1_BITMAP *bitmap,
+                                const uint8_t seq_num[8]) {
+  const unsigned kWindowSize = sizeof(bitmap->map) * 8;
+
+  uint64_t seq_num_u = to_u64_be(seq_num);
+  // Shift the window if necessary.
+  if (seq_num_u > bitmap->max_seq_num) {
+    uint64_t shift = seq_num_u - bitmap->max_seq_num;
+    if (shift >= kWindowSize) {
+      bitmap->map = 0;
+    } else {
+      bitmap->map <<= shift;
+    }
+    bitmap->max_seq_num = seq_num_u;
+  }
+
+  uint64_t idx = bitmap->max_seq_num - seq_num_u;
+  if (idx < kWindowSize) {
+    bitmap->map |= ((uint64_t)1) << idx;
+  }
+}
+
+enum ssl_open_record_t dtls_open_record(SSL *ssl, uint8_t *out_type,
+                                        Span<uint8_t> *out,
+                                        size_t *out_consumed,
+                                        uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+    return ssl_open_record_close_notify;
+  }
+
+  if (in.empty()) {
+    return ssl_open_record_partial;
+  }
+
+  CBS cbs = CBS(in);
+
+  // Decode the record.
+  uint8_t type;
+  uint16_t version;
+  uint8_t sequence[8];
+  CBS body;
+  if (!CBS_get_u8(&cbs, &type) ||
+      !CBS_get_u16(&cbs, &version) ||
+      !CBS_copy_bytes(&cbs, sequence, 8) ||
+      !CBS_get_u16_length_prefixed(&cbs, &body) ||
+      CBS_len(&body) > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
+    // The record header was incomplete or malformed. Drop the entire packet.
+    *out_consumed = in.size();
+    return ssl_open_record_discard;
+  }
+
+  bool version_ok;
+  if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+    // Only check the first byte. Enforcing beyond that can prevent decoding
+    // version negotiation failure alerts.
+    version_ok = (version >> 8) == DTLS1_VERSION_MAJOR;
+  } else {
+    version_ok = version == ssl->s3->aead_read_ctx->RecordVersion();
+  }
+
+  if (!version_ok) {
+    // The record header was incomplete or malformed. Drop the entire packet.
+    *out_consumed = in.size();
+    return ssl_open_record_discard;
+  }
+
+  Span<const uint8_t> header = in.subspan(0, DTLS1_RT_HEADER_LENGTH);
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HEADER, header);
+
+  uint16_t epoch = (((uint16_t)sequence[0]) << 8) | sequence[1];
+  if (epoch != ssl->d1->r_epoch ||
+      dtls1_bitmap_should_discard(&ssl->d1->bitmap, sequence)) {
+    // Drop this record. It's from the wrong epoch or is a replay. Note that if
+    // |epoch| is the next epoch, the record could be buffered for later. For
+    // simplicity, drop it and expect retransmit to handle it later; DTLS must
+    // handle packet loss anyway.
+    *out_consumed = in.size() - CBS_len(&cbs);
+    return ssl_open_record_discard;
+  }
+
+  // discard the body in-place.
+  if (!ssl->s3->aead_read_ctx->Open(
+          out, type, version, sequence, header,
+          MakeSpan(const_cast<uint8_t *>(CBS_data(&body)), CBS_len(&body)))) {
+    // Bad packets are silently dropped in DTLS. See section 4.2.1 of RFC 6347.
+    // Clear the error queue of any errors decryption may have added. Drop the
+    // entire packet as it must not have come from the peer.
+    //
+    // TODO(davidben): This doesn't distinguish malloc failures from encryption
+    // failures.
+    ERR_clear_error();
+    *out_consumed = in.size() - CBS_len(&cbs);
+    return ssl_open_record_discard;
+  }
+  *out_consumed = in.size() - CBS_len(&cbs);
+
+  // Check the plaintext length.
+  if (out->size() > SSL3_RT_MAX_PLAIN_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  dtls1_bitmap_record(&ssl->d1->bitmap, sequence);
+
+  // TODO(davidben): Limit the number of empty records as in TLS? This is only
+  // useful if we also limit discarded packets.
+
+  if (type == SSL3_RT_ALERT) {
+    return ssl_process_alert(ssl, out_alert, *out);
+  }
+
+  ssl->s3->warning_alert_count = 0;
+
+  *out_type = type;
+  return ssl_open_record_success;
+}
+
+static const SSLAEADContext *get_write_aead(const SSL *ssl,
+                                            enum dtls1_use_epoch_t use_epoch) {
+  if (use_epoch == dtls1_use_previous_epoch) {
+    assert(ssl->d1->w_epoch >= 1);
+    return ssl->d1->last_aead_write_ctx.get();
+  }
+
+  return ssl->s3->aead_write_ctx.get();
+}
+
+size_t dtls_max_seal_overhead(const SSL *ssl,
+                              enum dtls1_use_epoch_t use_epoch) {
+  return DTLS1_RT_HEADER_LENGTH + get_write_aead(ssl, use_epoch)->MaxOverhead();
+}
+
+size_t dtls_seal_prefix_len(const SSL *ssl, enum dtls1_use_epoch_t use_epoch) {
+  return DTLS1_RT_HEADER_LENGTH +
+         get_write_aead(ssl, use_epoch)->ExplicitNonceLen();
+}
+
+bool dtls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                      uint8_t type, const uint8_t *in, size_t in_len,
+                      enum dtls1_use_epoch_t use_epoch) {
+  const size_t prefix = dtls_seal_prefix_len(ssl, use_epoch);
+  if (buffers_alias(in, in_len, out, max_out) &&
+      (max_out < prefix || out + prefix != in)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  // Determine the parameters for the current epoch.
+  uint16_t epoch = ssl->d1->w_epoch;
+  SSLAEADContext *aead = ssl->s3->aead_write_ctx.get();
+  uint8_t *seq = ssl->s3->write_sequence;
+  if (use_epoch == dtls1_use_previous_epoch) {
+    assert(ssl->d1->w_epoch >= 1);
+    epoch = ssl->d1->w_epoch - 1;
+    aead = ssl->d1->last_aead_write_ctx.get();
+    seq = ssl->d1->last_write_sequence;
+  }
+
+  if (max_out < DTLS1_RT_HEADER_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  out[0] = type;
+
+  uint16_t record_version = ssl->s3->aead_write_ctx->RecordVersion();
+  out[1] = record_version >> 8;
+  out[2] = record_version & 0xff;
+
+  out[3] = epoch >> 8;
+  out[4] = epoch & 0xff;
+  OPENSSL_memcpy(&out[5], &seq[2], 6);
+
+  size_t ciphertext_len;
+  if (!aead->CiphertextLen(&ciphertext_len, in_len, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  out[11] = ciphertext_len >> 8;
+  out[12] = ciphertext_len & 0xff;
+  Span<const uint8_t> header = MakeConstSpan(out, DTLS1_RT_HEADER_LENGTH);
+
+  size_t len_copy;
+  if (!aead->Seal(out + DTLS1_RT_HEADER_LENGTH, &len_copy,
+                  max_out - DTLS1_RT_HEADER_LENGTH, type, record_version,
+                  &out[3] /* seq */, header, in, in_len) ||
+      !ssl_record_sequence_update(&seq[2], 6)) {
+    return false;
+  }
+  assert(ciphertext_len == len_copy);
+
+  *out_len = DTLS1_RT_HEADER_LENGTH + ciphertext_len;
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HEADER, header);
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc
new file mode 100644
index 0000000..6881d0f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc	
@@ -0,0 +1,586 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <openssl_grpc/bytestring.h>
+
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+constexpr int kHandoffVersion = 0;
+constexpr int kHandbackVersion = 0;
+
+// serialize_features adds a description of features supported by this binary to
+// |out|.  Returns true on success and false on error.
+static bool serialize_features(CBB *out) {
+  CBB ciphers;
+  if (!CBB_add_asn1(out, &ciphers, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  Span<const SSL_CIPHER> all_ciphers = AllCiphers();
+  for (const SSL_CIPHER& cipher : all_ciphers) {
+    if (!CBB_add_u16(&ciphers, static_cast<uint16_t>(cipher.id))) {
+      return false;
+    }
+  }
+  CBB curves;
+  if (!CBB_add_asn1(out, &curves, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  for (const NamedGroup& g : NamedGroups()) {
+    if (!CBB_add_u16(&curves, g.group_id)) {
+      return false;
+    }
+  }
+  return CBB_flush(out);
+}
+
+bool SSL_serialize_handoff(const SSL *ssl, CBB *out,
+                           SSL_CLIENT_HELLO *out_hello) {
+  const SSL3_STATE *const s3 = ssl->s3;
+  if (!ssl->server ||
+      s3->hs == nullptr ||
+      s3->rwstate != SSL_ERROR_HANDOFF) {
+    return false;
+  }
+
+  CBB seq;
+  SSLMessage msg;
+  Span<const uint8_t> transcript = s3->hs->transcript.buffer();
+  if (!CBB_add_asn1(out, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&seq, kHandoffVersion) ||
+      !CBB_add_asn1_octet_string(&seq, transcript.data(), transcript.size()) ||
+      !CBB_add_asn1_octet_string(&seq,
+                                 reinterpret_cast<uint8_t *>(s3->hs_buf->data),
+                                 s3->hs_buf->length) ||
+      !serialize_features(&seq) ||
+      !CBB_flush(out) ||
+      !ssl->method->get_message(ssl, &msg) ||
+      !ssl_client_hello_init(ssl, out_hello, msg)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool SSL_decline_handoff(SSL *ssl) {
+  const SSL3_STATE *const s3 = ssl->s3;
+  if (!ssl->server ||
+      s3->hs == nullptr ||
+      s3->rwstate != SSL_ERROR_HANDOFF) {
+    return false;
+  }
+
+  s3->hs->config->handoff = false;
+  return true;
+}
+
+// apply_remote_features reads a list of supported features from |in| and
+// (possibly) reconfigures |ssl| to disallow the negotation of features whose
+// support has not been indicated.  (This prevents the the handshake from
+// committing to features that are not supported on the handoff/handback side.)
+static bool apply_remote_features(SSL *ssl, CBS *in) {
+  CBS ciphers;
+  if (!CBS_get_asn1(in, &ciphers, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  bssl::UniquePtr<STACK_OF(SSL_CIPHER)> supported(sk_SSL_CIPHER_new_null());
+  while (CBS_len(&ciphers)) {
+    uint16_t id;
+    if (!CBS_get_u16(&ciphers, &id)) {
+      return false;
+    }
+    const SSL_CIPHER *cipher = SSL_get_cipher_by_value(id);
+    if (!cipher) {
+      continue;
+    }
+    if (!sk_SSL_CIPHER_push(supported.get(), cipher)) {
+      return false;
+    }
+  }
+  STACK_OF(SSL_CIPHER) *configured =
+      ssl->config->cipher_list ? ssl->config->cipher_list->ciphers.get()
+                               : ssl->ctx->cipher_list->ciphers.get();
+  bssl::UniquePtr<STACK_OF(SSL_CIPHER)> unsupported(sk_SSL_CIPHER_new_null());
+  for (const SSL_CIPHER *configured_cipher : configured) {
+    if (sk_SSL_CIPHER_find(supported.get(), nullptr, configured_cipher)) {
+      continue;
+    }
+    if (!sk_SSL_CIPHER_push(unsupported.get(), configured_cipher)) {
+      return false;
+    }
+  }
+  if (sk_SSL_CIPHER_num(unsupported.get()) && !ssl->config->cipher_list) {
+    ssl->config->cipher_list = bssl::MakeUnique<SSLCipherPreferenceList>();
+    if (!ssl->config->cipher_list->Init(*ssl->ctx->cipher_list)) {
+      return false;
+    }
+  }
+  for (const SSL_CIPHER *unsupported_cipher : unsupported.get()) {
+    ssl->config->cipher_list->Remove(unsupported_cipher);
+  }
+  if (sk_SSL_CIPHER_num(SSL_get_ciphers(ssl)) == 0) {
+    return false;
+  }
+
+  CBS curves;
+  if (!CBS_get_asn1(in, &curves, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  Array<uint16_t> supported_curves;
+  if (!supported_curves.Init(CBS_len(&curves) / 2)) {
+    return false;
+  }
+  size_t idx = 0;
+  while (CBS_len(&curves)) {
+    uint16_t curve;
+    if (!CBS_get_u16(&curves, &curve)) {
+      return false;
+    }
+    supported_curves[idx++] = curve;
+  }
+  Span<const uint16_t> configured_curves =
+      tls1_get_grouplist(ssl->s3->hs.get());
+  Array<uint16_t> new_configured_curves;
+  if (!new_configured_curves.Init(configured_curves.size())) {
+    return false;
+  }
+  idx = 0;
+  for (uint16_t configured_curve : configured_curves) {
+    bool ok = false;
+    for (uint16_t supported_curve : supported_curves) {
+      if (supported_curve == configured_curve) {
+        ok = true;
+        break;
+      }
+    }
+    if (ok) {
+      new_configured_curves[idx++] = configured_curve;
+    }
+  }
+  if (idx == 0) {
+    return false;
+  }
+  new_configured_curves.Shrink(idx);
+  ssl->config->supported_group_list = std::move(new_configured_curves);
+
+  return true;
+}
+
+// uses_disallowed_feature returns true iff |ssl| enables a feature that
+// disqualifies it for split handshakes.
+static bool uses_disallowed_feature(const SSL *ssl) {
+  return ssl->method->is_dtls || (ssl->config->cert && ssl->config->cert->dc) ||
+         ssl->config->quic_transport_params.size() > 0;
+}
+
+bool SSL_apply_handoff(SSL *ssl, Span<const uint8_t> handoff) {
+  if (uses_disallowed_feature(ssl)) {
+    return false;
+  }
+
+  CBS seq, handoff_cbs(handoff);
+  uint64_t handoff_version;
+  if (!CBS_get_asn1(&handoff_cbs, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&seq, &handoff_version) ||
+      handoff_version != kHandoffVersion) {
+    return false;
+  }
+
+  CBS transcript, hs_buf;
+  if (!CBS_get_asn1(&seq, &transcript, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &hs_buf, CBS_ASN1_OCTETSTRING) ||
+      !apply_remote_features(ssl, &seq)) {
+    return false;
+  }
+
+  SSL_set_accept_state(ssl);
+
+  SSL3_STATE *const s3 = ssl->s3;
+  s3->v2_hello_done = true;
+  s3->has_message = true;
+
+  s3->hs_buf.reset(BUF_MEM_new());
+  if (!s3->hs_buf ||
+      !BUF_MEM_append(s3->hs_buf.get(), CBS_data(&hs_buf), CBS_len(&hs_buf))) {
+    return false;
+  }
+
+  if (CBS_len(&transcript) != 0) {
+    s3->hs->transcript.Update(transcript);
+    s3->is_v2_hello = true;
+  }
+  s3->hs->handback = true;
+
+  return true;
+}
+
+bool SSL_serialize_handback(const SSL *ssl, CBB *out) {
+  if (!ssl->server || uses_disallowed_feature(ssl)) {
+    return false;
+  }
+  const SSL3_STATE *const s3 = ssl->s3;
+  SSL_HANDSHAKE *const hs = s3->hs.get();
+  handback_t type;
+  switch (hs->state) {
+    case state12_read_change_cipher_spec:
+      type = handback_after_session_resumption;
+      break;
+    case state12_read_client_certificate:
+      type = handback_after_ecdhe;
+      break;
+    case state12_finish_server_handshake:
+      type = handback_after_handshake;
+      break;
+    // The outer state machine is always in |state12_tls13| for a TLS 1.3
+    // handshake as TLS 1.3 uses |tls13_state|.
+    case state12_tls13:
+      type = handback_tls13;
+      break;
+    default:
+      return false;
+  }
+
+  size_t hostname_len = 0;
+  if (s3->hostname) {
+    hostname_len = strlen(s3->hostname.get());
+  }
+
+  Span<const uint8_t> transcript;
+  if (type == handback_after_ecdhe ||
+      type == handback_after_session_resumption || type == handback_tls13) {
+    transcript = s3->hs->transcript.buffer();
+  }
+  size_t write_iv_len = 0;
+  const uint8_t *write_iv = nullptr;
+  if ((type == handback_after_session_resumption ||
+       type == handback_after_handshake) &&
+      ssl->version == TLS1_VERSION &&
+      SSL_CIPHER_is_block_cipher(s3->aead_write_ctx->cipher()) &&
+      !s3->aead_write_ctx->GetIV(&write_iv, &write_iv_len)) {
+    return false;
+  }
+  size_t read_iv_len = 0;
+  const uint8_t *read_iv = nullptr;
+  if (type == handback_after_handshake &&
+      ssl->version == TLS1_VERSION &&
+      SSL_CIPHER_is_block_cipher(s3->aead_read_ctx->cipher()) &&
+      !s3->aead_read_ctx->GetIV(&read_iv, &read_iv_len)) {
+      return false;
+  }
+
+  // TODO(mab): make sure everything is serialized.
+  CBB seq, key_share;
+  const SSL_SESSION *session;
+  if (type == handback_tls13) {
+    session = hs->new_session.get();
+  } else {
+    session = s3->session_reused ? ssl->session.get() : hs->new_session.get();
+  }
+  if (!CBB_add_asn1(out, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&seq, kHandbackVersion) ||
+      !CBB_add_asn1_uint64(&seq, type) ||
+      !CBB_add_asn1_octet_string(&seq, s3->read_sequence,
+                                 sizeof(s3->read_sequence)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->write_sequence,
+                                 sizeof(s3->write_sequence)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->server_random,
+                                 sizeof(s3->server_random)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->client_random,
+                                 sizeof(s3->client_random)) ||
+      !CBB_add_asn1_octet_string(&seq, read_iv, read_iv_len) ||
+      !CBB_add_asn1_octet_string(&seq, write_iv, write_iv_len) ||
+      !CBB_add_asn1_bool(&seq, s3->session_reused) ||
+      !CBB_add_asn1_bool(&seq, s3->channel_id_valid) ||
+      !ssl_session_serialize(session, &seq) ||
+      !CBB_add_asn1_octet_string(&seq, s3->next_proto_negotiated.data(),
+                                 s3->next_proto_negotiated.size()) ||
+      !CBB_add_asn1_octet_string(&seq, s3->alpn_selected.data(),
+                                 s3->alpn_selected.size()) ||
+      !CBB_add_asn1_octet_string(
+          &seq, reinterpret_cast<uint8_t *>(s3->hostname.get()),
+          hostname_len) ||
+      !CBB_add_asn1_octet_string(&seq, s3->channel_id,
+                                 sizeof(s3->channel_id)) ||
+      !CBB_add_asn1_bool(&seq, ssl->s3->token_binding_negotiated) ||
+      !CBB_add_asn1_uint64(&seq, ssl->s3->negotiated_token_binding_param) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->next_proto_neg_seen) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->cert_request) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->extended_master_secret) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->ticket_expected) ||
+      !CBB_add_asn1_uint64(&seq, SSL_CIPHER_get_id(s3->hs->new_cipher)) ||
+      !CBB_add_asn1_octet_string(&seq, transcript.data(), transcript.size()) ||
+      !CBB_add_asn1(&seq, &key_share, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+  if (type == handback_after_ecdhe &&
+      !s3->hs->key_shares[0]->Serialize(&key_share)) {
+    return false;
+  }
+  if (type == handback_tls13) {
+    if (!CBB_add_asn1_octet_string(&seq, hs->client_traffic_secret_0().data(),
+                                   hs->client_traffic_secret_0().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->server_traffic_secret_0().data(),
+                                   hs->server_traffic_secret_0().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->client_handshake_secret().data(),
+                                   hs->client_handshake_secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->server_handshake_secret().data(),
+                                   hs->server_handshake_secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->secret().data(),
+                                   hs->secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, s3->exporter_secret,
+                                   s3->exporter_secret_len) ||
+        !CBB_add_asn1_bool(&seq, s3->used_hello_retry_request) ||
+        !CBB_add_asn1_bool(&seq, hs->accept_psk_mode) ||
+        !CBB_add_asn1_int64(&seq, s3->ticket_age_skew)) {
+      return false;
+    }
+  }
+  return CBB_flush(out);
+}
+
+bool SSL_apply_handback(SSL *ssl, Span<const uint8_t> handback) {
+  if (ssl->do_handshake != nullptr ||
+      ssl->method->is_dtls) {
+    return false;
+  }
+
+  SSL3_STATE *const s3 = ssl->s3;
+  uint64_t handback_version, negotiated_token_binding_param, cipher, type;
+
+  CBS seq, read_seq, write_seq, server_rand, client_rand, read_iv, write_iv,
+      next_proto, alpn, hostname, channel_id, transcript, key_share;
+  int session_reused, channel_id_valid, cert_request, extended_master_secret,
+      ticket_expected, token_binding_negotiated, next_proto_neg_seen;
+  SSL_SESSION *session = nullptr;
+
+  CBS handback_cbs(handback);
+  if (!CBS_get_asn1(&handback_cbs, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&seq, &handback_version) ||
+      handback_version != kHandbackVersion ||
+      !CBS_get_asn1_uint64(&seq, &type)) {
+    return false;
+  }
+
+  if (!CBS_get_asn1(&seq, &read_seq, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&read_seq) != sizeof(s3->read_sequence) ||
+      !CBS_get_asn1(&seq, &write_seq, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&write_seq) != sizeof(s3->write_sequence) ||
+      !CBS_get_asn1(&seq, &server_rand, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&server_rand) != sizeof(s3->server_random) ||
+      !CBS_copy_bytes(&server_rand, s3->server_random,
+                      sizeof(s3->server_random)) ||
+      !CBS_get_asn1(&seq, &client_rand, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&client_rand) != sizeof(s3->client_random) ||
+      !CBS_copy_bytes(&client_rand, s3->client_random,
+                      sizeof(s3->client_random)) ||
+      !CBS_get_asn1(&seq, &read_iv, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &write_iv, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_bool(&seq, &session_reused) ||
+      !CBS_get_asn1_bool(&seq, &channel_id_valid)) {
+    return false;
+  }
+
+  s3->hs = ssl_handshake_new(ssl);
+  SSL_HANDSHAKE *const hs = s3->hs.get();
+  if (!session_reused || type == handback_tls13) {
+    hs->new_session =
+        SSL_SESSION_parse(&seq, ssl->ctx->x509_method, ssl->ctx->pool);
+    session = hs->new_session.get();
+  } else {
+    ssl->session =
+        SSL_SESSION_parse(&seq, ssl->ctx->x509_method, ssl->ctx->pool);
+    session = ssl->session.get();
+  }
+
+  if (!session || !CBS_get_asn1(&seq, &next_proto, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &alpn, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &hostname, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &channel_id, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&channel_id) != sizeof(s3->channel_id) ||
+      !CBS_copy_bytes(&channel_id, s3->channel_id,
+                      sizeof(s3->channel_id)) ||
+      !CBS_get_asn1_bool(&seq, &token_binding_negotiated) ||
+      !CBS_get_asn1_uint64(&seq, &negotiated_token_binding_param) ||
+      !CBS_get_asn1_bool(&seq, &next_proto_neg_seen) ||
+      !CBS_get_asn1_bool(&seq, &cert_request) ||
+      !CBS_get_asn1_bool(&seq, &extended_master_secret) ||
+      !CBS_get_asn1_bool(&seq, &ticket_expected) ||
+      !CBS_get_asn1_uint64(&seq, &cipher)) {
+    return false;
+  }
+  if ((hs->new_cipher =
+           SSL_get_cipher_by_value(static_cast<uint16_t>(cipher))) == nullptr) {
+    return false;
+  }
+  if (!CBS_get_asn1(&seq, &transcript, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &key_share, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+  CBS client_handshake_secret, server_handshake_secret, client_traffic_secret_0,
+      server_traffic_secret_0, secret, exporter_secret;
+  if (type == handback_tls13) {
+    int used_hello_retry_request, accept_psk_mode;
+    int64_t ticket_age_skew;
+    if (!CBS_get_asn1(&seq, &client_traffic_secret_0, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &server_traffic_secret_0, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &client_handshake_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &server_handshake_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &exporter_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1_bool(&seq, &used_hello_retry_request) ||
+        !CBS_get_asn1_bool(&seq, &accept_psk_mode) ||
+        !CBS_get_asn1_int64(&seq, &ticket_age_skew)) {
+      return false;
+    }
+    if (ticket_age_skew > std::numeric_limits<int32_t>::max() ||
+        ticket_age_skew < std::numeric_limits<int32_t>::min()) {
+      return false;
+    }
+    s3->ticket_age_skew = static_cast<int32_t>(ticket_age_skew);
+    s3->used_hello_retry_request = used_hello_retry_request;
+    hs->accept_psk_mode = accept_psk_mode;
+  }
+
+  ssl->version = session->ssl_version;
+  s3->have_version = true;
+  if (!ssl_method_supports_version(ssl->method, ssl->version) ||
+      session->cipher != hs->new_cipher ||
+      ssl_protocol_version(ssl) < SSL_CIPHER_get_min_version(session->cipher) ||
+      SSL_CIPHER_get_max_version(session->cipher) < ssl_protocol_version(ssl)) {
+    return false;
+  }
+  ssl->do_handshake = ssl_server_handshake;
+  ssl->server = true;
+  switch (type) {
+    case handback_after_session_resumption:
+      hs->state = state12_read_change_cipher_spec;
+      if (!session_reused) {
+        return false;
+      }
+      break;
+    case handback_after_ecdhe:
+      hs->state = state12_read_client_certificate;
+      if (session_reused) {
+        return false;
+      }
+      break;
+    case handback_after_handshake:
+      hs->state = state12_finish_server_handshake;
+      break;
+    case handback_tls13:
+      hs->state = state12_tls13;
+      hs->tls13_state = state13_read_client_certificate;
+      break;
+    default:
+      return false;
+  }
+  s3->session_reused = session_reused;
+  s3->channel_id_valid = channel_id_valid;
+  s3->next_proto_negotiated.CopyFrom(next_proto);
+  s3->alpn_selected.CopyFrom(alpn);
+
+  const size_t hostname_len = CBS_len(&hostname);
+  if (hostname_len == 0) {
+    s3->hostname.reset();
+  } else {
+    char *hostname_str = nullptr;
+    if (!CBS_strdup(&hostname, &hostname_str)) {
+      return false;
+    }
+    s3->hostname.reset(hostname_str);
+  }
+
+  s3->token_binding_negotiated = token_binding_negotiated;
+  s3->negotiated_token_binding_param =
+      static_cast<uint8_t>(negotiated_token_binding_param);
+  hs->next_proto_neg_seen = next_proto_neg_seen;
+  hs->wait = ssl_hs_flush;
+  hs->extended_master_secret = extended_master_secret;
+  hs->ticket_expected = ticket_expected;
+  s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+  hs->cert_request = cert_request;
+
+  // TODO(davidben): When handoff for TLS 1.3 is added, serialize
+  // |early_data_reason| and stabilize the constants.
+  s3->early_data_reason = ssl_early_data_protocol_version;
+
+  if ((type == handback_after_ecdhe ||
+       type == handback_after_session_resumption || type == handback_tls13) &&
+      (!hs->transcript.Init() ||
+       !hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+       !hs->transcript.Update(transcript))) {
+    return false;
+  }
+  if (type == handback_tls13) {
+    const size_t digest_len = hs->transcript.DigestLen();
+    if (digest_len != CBS_len(&client_traffic_secret_0) ||
+        digest_len != CBS_len(&server_traffic_secret_0) ||
+        digest_len != CBS_len(&client_handshake_secret) ||
+        digest_len != CBS_len(&server_handshake_secret) ||
+        digest_len != CBS_len(&secret)) {
+      return false;
+    }
+    hs->ResizeSecrets(digest_len);
+    memcpy(hs->client_traffic_secret_0().data(),
+           CBS_data(&client_traffic_secret_0), digest_len);
+    memcpy(hs->server_traffic_secret_0().data(),
+           CBS_data(&server_traffic_secret_0), digest_len);
+    memcpy(hs->client_handshake_secret().data(),
+           CBS_data(&client_handshake_secret), digest_len);
+    memcpy(hs->server_handshake_secret().data(),
+           CBS_data(&server_handshake_secret), digest_len);
+    memcpy(hs->secret().data(), CBS_data(&secret), digest_len);
+
+    if (digest_len != CBS_len(&exporter_secret)) {
+      return false;
+    }
+    memcpy(s3->exporter_secret, CBS_data(&exporter_secret), digest_len);
+    s3->exporter_secret_len = digest_len;
+  }
+  Array<uint8_t> key_block;
+  if ((type == handback_after_session_resumption ||
+       type == handback_after_handshake) &&
+      (!tls1_configure_aead(ssl, evp_aead_seal, &key_block, session->cipher,
+                            write_iv) ||
+       !CBS_copy_bytes(&write_seq, s3->write_sequence,
+                       sizeof(s3->write_sequence)))) {
+    return false;
+  }
+  if (type == handback_after_handshake &&
+      (!tls1_configure_aead(ssl, evp_aead_open, &key_block, session->cipher,
+                            read_iv) ||
+       !CBS_copy_bytes(&read_seq, s3->read_sequence,
+                       sizeof(s3->read_sequence)))) {
+    return false;
+  }
+  if (type == handback_tls13 &&
+      (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                              hs->client_handshake_secret()) ||
+       !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                              hs->server_traffic_secret_0()))) {
+    return false;
+  }
+  if (type == handback_after_ecdhe &&
+      (hs->key_shares[0] = SSLKeyShare::Create(&key_share)) == nullptr) {
+    return false;
+  }
+
+  return CBS_len(&seq) == 0;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc.grpc_back
new file mode 100644
index 0000000..a9c08fe
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handoff.cc.grpc_back	
@@ -0,0 +1,586 @@
+/* Copyright (c) 2018, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <openssl/bytestring.h>
+
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+constexpr int kHandoffVersion = 0;
+constexpr int kHandbackVersion = 0;
+
+// serialize_features adds a description of features supported by this binary to
+// |out|.  Returns true on success and false on error.
+static bool serialize_features(CBB *out) {
+  CBB ciphers;
+  if (!CBB_add_asn1(out, &ciphers, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  Span<const SSL_CIPHER> all_ciphers = AllCiphers();
+  for (const SSL_CIPHER& cipher : all_ciphers) {
+    if (!CBB_add_u16(&ciphers, static_cast<uint16_t>(cipher.id))) {
+      return false;
+    }
+  }
+  CBB curves;
+  if (!CBB_add_asn1(out, &curves, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  for (const NamedGroup& g : NamedGroups()) {
+    if (!CBB_add_u16(&curves, g.group_id)) {
+      return false;
+    }
+  }
+  return CBB_flush(out);
+}
+
+bool SSL_serialize_handoff(const SSL *ssl, CBB *out,
+                           SSL_CLIENT_HELLO *out_hello) {
+  const SSL3_STATE *const s3 = ssl->s3;
+  if (!ssl->server ||
+      s3->hs == nullptr ||
+      s3->rwstate != SSL_ERROR_HANDOFF) {
+    return false;
+  }
+
+  CBB seq;
+  SSLMessage msg;
+  Span<const uint8_t> transcript = s3->hs->transcript.buffer();
+  if (!CBB_add_asn1(out, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&seq, kHandoffVersion) ||
+      !CBB_add_asn1_octet_string(&seq, transcript.data(), transcript.size()) ||
+      !CBB_add_asn1_octet_string(&seq,
+                                 reinterpret_cast<uint8_t *>(s3->hs_buf->data),
+                                 s3->hs_buf->length) ||
+      !serialize_features(&seq) ||
+      !CBB_flush(out) ||
+      !ssl->method->get_message(ssl, &msg) ||
+      !ssl_client_hello_init(ssl, out_hello, msg)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool SSL_decline_handoff(SSL *ssl) {
+  const SSL3_STATE *const s3 = ssl->s3;
+  if (!ssl->server ||
+      s3->hs == nullptr ||
+      s3->rwstate != SSL_ERROR_HANDOFF) {
+    return false;
+  }
+
+  s3->hs->config->handoff = false;
+  return true;
+}
+
+// apply_remote_features reads a list of supported features from |in| and
+// (possibly) reconfigures |ssl| to disallow the negotation of features whose
+// support has not been indicated.  (This prevents the the handshake from
+// committing to features that are not supported on the handoff/handback side.)
+static bool apply_remote_features(SSL *ssl, CBS *in) {
+  CBS ciphers;
+  if (!CBS_get_asn1(in, &ciphers, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  bssl::UniquePtr<STACK_OF(SSL_CIPHER)> supported(sk_SSL_CIPHER_new_null());
+  while (CBS_len(&ciphers)) {
+    uint16_t id;
+    if (!CBS_get_u16(&ciphers, &id)) {
+      return false;
+    }
+    const SSL_CIPHER *cipher = SSL_get_cipher_by_value(id);
+    if (!cipher) {
+      continue;
+    }
+    if (!sk_SSL_CIPHER_push(supported.get(), cipher)) {
+      return false;
+    }
+  }
+  STACK_OF(SSL_CIPHER) *configured =
+      ssl->config->cipher_list ? ssl->config->cipher_list->ciphers.get()
+                               : ssl->ctx->cipher_list->ciphers.get();
+  bssl::UniquePtr<STACK_OF(SSL_CIPHER)> unsupported(sk_SSL_CIPHER_new_null());
+  for (const SSL_CIPHER *configured_cipher : configured) {
+    if (sk_SSL_CIPHER_find(supported.get(), nullptr, configured_cipher)) {
+      continue;
+    }
+    if (!sk_SSL_CIPHER_push(unsupported.get(), configured_cipher)) {
+      return false;
+    }
+  }
+  if (sk_SSL_CIPHER_num(unsupported.get()) && !ssl->config->cipher_list) {
+    ssl->config->cipher_list = bssl::MakeUnique<SSLCipherPreferenceList>();
+    if (!ssl->config->cipher_list->Init(*ssl->ctx->cipher_list)) {
+      return false;
+    }
+  }
+  for (const SSL_CIPHER *unsupported_cipher : unsupported.get()) {
+    ssl->config->cipher_list->Remove(unsupported_cipher);
+  }
+  if (sk_SSL_CIPHER_num(SSL_get_ciphers(ssl)) == 0) {
+    return false;
+  }
+
+  CBS curves;
+  if (!CBS_get_asn1(in, &curves, CBS_ASN1_OCTETSTRING)) {
+    return false;
+  }
+  Array<uint16_t> supported_curves;
+  if (!supported_curves.Init(CBS_len(&curves) / 2)) {
+    return false;
+  }
+  size_t idx = 0;
+  while (CBS_len(&curves)) {
+    uint16_t curve;
+    if (!CBS_get_u16(&curves, &curve)) {
+      return false;
+    }
+    supported_curves[idx++] = curve;
+  }
+  Span<const uint16_t> configured_curves =
+      tls1_get_grouplist(ssl->s3->hs.get());
+  Array<uint16_t> new_configured_curves;
+  if (!new_configured_curves.Init(configured_curves.size())) {
+    return false;
+  }
+  idx = 0;
+  for (uint16_t configured_curve : configured_curves) {
+    bool ok = false;
+    for (uint16_t supported_curve : supported_curves) {
+      if (supported_curve == configured_curve) {
+        ok = true;
+        break;
+      }
+    }
+    if (ok) {
+      new_configured_curves[idx++] = configured_curve;
+    }
+  }
+  if (idx == 0) {
+    return false;
+  }
+  new_configured_curves.Shrink(idx);
+  ssl->config->supported_group_list = std::move(new_configured_curves);
+
+  return true;
+}
+
+// uses_disallowed_feature returns true iff |ssl| enables a feature that
+// disqualifies it for split handshakes.
+static bool uses_disallowed_feature(const SSL *ssl) {
+  return ssl->method->is_dtls || (ssl->config->cert && ssl->config->cert->dc) ||
+         ssl->config->quic_transport_params.size() > 0;
+}
+
+bool SSL_apply_handoff(SSL *ssl, Span<const uint8_t> handoff) {
+  if (uses_disallowed_feature(ssl)) {
+    return false;
+  }
+
+  CBS seq, handoff_cbs(handoff);
+  uint64_t handoff_version;
+  if (!CBS_get_asn1(&handoff_cbs, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&seq, &handoff_version) ||
+      handoff_version != kHandoffVersion) {
+    return false;
+  }
+
+  CBS transcript, hs_buf;
+  if (!CBS_get_asn1(&seq, &transcript, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &hs_buf, CBS_ASN1_OCTETSTRING) ||
+      !apply_remote_features(ssl, &seq)) {
+    return false;
+  }
+
+  SSL_set_accept_state(ssl);
+
+  SSL3_STATE *const s3 = ssl->s3;
+  s3->v2_hello_done = true;
+  s3->has_message = true;
+
+  s3->hs_buf.reset(BUF_MEM_new());
+  if (!s3->hs_buf ||
+      !BUF_MEM_append(s3->hs_buf.get(), CBS_data(&hs_buf), CBS_len(&hs_buf))) {
+    return false;
+  }
+
+  if (CBS_len(&transcript) != 0) {
+    s3->hs->transcript.Update(transcript);
+    s3->is_v2_hello = true;
+  }
+  s3->hs->handback = true;
+
+  return true;
+}
+
+bool SSL_serialize_handback(const SSL *ssl, CBB *out) {
+  if (!ssl->server || uses_disallowed_feature(ssl)) {
+    return false;
+  }
+  const SSL3_STATE *const s3 = ssl->s3;
+  SSL_HANDSHAKE *const hs = s3->hs.get();
+  handback_t type;
+  switch (hs->state) {
+    case state12_read_change_cipher_spec:
+      type = handback_after_session_resumption;
+      break;
+    case state12_read_client_certificate:
+      type = handback_after_ecdhe;
+      break;
+    case state12_finish_server_handshake:
+      type = handback_after_handshake;
+      break;
+    // The outer state machine is always in |state12_tls13| for a TLS 1.3
+    // handshake as TLS 1.3 uses |tls13_state|.
+    case state12_tls13:
+      type = handback_tls13;
+      break;
+    default:
+      return false;
+  }
+
+  size_t hostname_len = 0;
+  if (s3->hostname) {
+    hostname_len = strlen(s3->hostname.get());
+  }
+
+  Span<const uint8_t> transcript;
+  if (type == handback_after_ecdhe ||
+      type == handback_after_session_resumption || type == handback_tls13) {
+    transcript = s3->hs->transcript.buffer();
+  }
+  size_t write_iv_len = 0;
+  const uint8_t *write_iv = nullptr;
+  if ((type == handback_after_session_resumption ||
+       type == handback_after_handshake) &&
+      ssl->version == TLS1_VERSION &&
+      SSL_CIPHER_is_block_cipher(s3->aead_write_ctx->cipher()) &&
+      !s3->aead_write_ctx->GetIV(&write_iv, &write_iv_len)) {
+    return false;
+  }
+  size_t read_iv_len = 0;
+  const uint8_t *read_iv = nullptr;
+  if (type == handback_after_handshake &&
+      ssl->version == TLS1_VERSION &&
+      SSL_CIPHER_is_block_cipher(s3->aead_read_ctx->cipher()) &&
+      !s3->aead_read_ctx->GetIV(&read_iv, &read_iv_len)) {
+      return false;
+  }
+
+  // TODO(mab): make sure everything is serialized.
+  CBB seq, key_share;
+  const SSL_SESSION *session;
+  if (type == handback_tls13) {
+    session = hs->new_session.get();
+  } else {
+    session = s3->session_reused ? ssl->session.get() : hs->new_session.get();
+  }
+  if (!CBB_add_asn1(out, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&seq, kHandbackVersion) ||
+      !CBB_add_asn1_uint64(&seq, type) ||
+      !CBB_add_asn1_octet_string(&seq, s3->read_sequence,
+                                 sizeof(s3->read_sequence)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->write_sequence,
+                                 sizeof(s3->write_sequence)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->server_random,
+                                 sizeof(s3->server_random)) ||
+      !CBB_add_asn1_octet_string(&seq, s3->client_random,
+                                 sizeof(s3->client_random)) ||
+      !CBB_add_asn1_octet_string(&seq, read_iv, read_iv_len) ||
+      !CBB_add_asn1_octet_string(&seq, write_iv, write_iv_len) ||
+      !CBB_add_asn1_bool(&seq, s3->session_reused) ||
+      !CBB_add_asn1_bool(&seq, s3->channel_id_valid) ||
+      !ssl_session_serialize(session, &seq) ||
+      !CBB_add_asn1_octet_string(&seq, s3->next_proto_negotiated.data(),
+                                 s3->next_proto_negotiated.size()) ||
+      !CBB_add_asn1_octet_string(&seq, s3->alpn_selected.data(),
+                                 s3->alpn_selected.size()) ||
+      !CBB_add_asn1_octet_string(
+          &seq, reinterpret_cast<uint8_t *>(s3->hostname.get()),
+          hostname_len) ||
+      !CBB_add_asn1_octet_string(&seq, s3->channel_id,
+                                 sizeof(s3->channel_id)) ||
+      !CBB_add_asn1_bool(&seq, ssl->s3->token_binding_negotiated) ||
+      !CBB_add_asn1_uint64(&seq, ssl->s3->negotiated_token_binding_param) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->next_proto_neg_seen) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->cert_request) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->extended_master_secret) ||
+      !CBB_add_asn1_bool(&seq, s3->hs->ticket_expected) ||
+      !CBB_add_asn1_uint64(&seq, SSL_CIPHER_get_id(s3->hs->new_cipher)) ||
+      !CBB_add_asn1_octet_string(&seq, transcript.data(), transcript.size()) ||
+      !CBB_add_asn1(&seq, &key_share, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+  if (type == handback_after_ecdhe &&
+      !s3->hs->key_shares[0]->Serialize(&key_share)) {
+    return false;
+  }
+  if (type == handback_tls13) {
+    if (!CBB_add_asn1_octet_string(&seq, hs->client_traffic_secret_0().data(),
+                                   hs->client_traffic_secret_0().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->server_traffic_secret_0().data(),
+                                   hs->server_traffic_secret_0().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->client_handshake_secret().data(),
+                                   hs->client_handshake_secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->server_handshake_secret().data(),
+                                   hs->server_handshake_secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, hs->secret().data(),
+                                   hs->secret().size()) ||
+        !CBB_add_asn1_octet_string(&seq, s3->exporter_secret,
+                                   s3->exporter_secret_len) ||
+        !CBB_add_asn1_bool(&seq, s3->used_hello_retry_request) ||
+        !CBB_add_asn1_bool(&seq, hs->accept_psk_mode) ||
+        !CBB_add_asn1_int64(&seq, s3->ticket_age_skew)) {
+      return false;
+    }
+  }
+  return CBB_flush(out);
+}
+
+bool SSL_apply_handback(SSL *ssl, Span<const uint8_t> handback) {
+  if (ssl->do_handshake != nullptr ||
+      ssl->method->is_dtls) {
+    return false;
+  }
+
+  SSL3_STATE *const s3 = ssl->s3;
+  uint64_t handback_version, negotiated_token_binding_param, cipher, type;
+
+  CBS seq, read_seq, write_seq, server_rand, client_rand, read_iv, write_iv,
+      next_proto, alpn, hostname, channel_id, transcript, key_share;
+  int session_reused, channel_id_valid, cert_request, extended_master_secret,
+      ticket_expected, token_binding_negotiated, next_proto_neg_seen;
+  SSL_SESSION *session = nullptr;
+
+  CBS handback_cbs(handback);
+  if (!CBS_get_asn1(&handback_cbs, &seq, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&seq, &handback_version) ||
+      handback_version != kHandbackVersion ||
+      !CBS_get_asn1_uint64(&seq, &type)) {
+    return false;
+  }
+
+  if (!CBS_get_asn1(&seq, &read_seq, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&read_seq) != sizeof(s3->read_sequence) ||
+      !CBS_get_asn1(&seq, &write_seq, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&write_seq) != sizeof(s3->write_sequence) ||
+      !CBS_get_asn1(&seq, &server_rand, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&server_rand) != sizeof(s3->server_random) ||
+      !CBS_copy_bytes(&server_rand, s3->server_random,
+                      sizeof(s3->server_random)) ||
+      !CBS_get_asn1(&seq, &client_rand, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&client_rand) != sizeof(s3->client_random) ||
+      !CBS_copy_bytes(&client_rand, s3->client_random,
+                      sizeof(s3->client_random)) ||
+      !CBS_get_asn1(&seq, &read_iv, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &write_iv, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1_bool(&seq, &session_reused) ||
+      !CBS_get_asn1_bool(&seq, &channel_id_valid)) {
+    return false;
+  }
+
+  s3->hs = ssl_handshake_new(ssl);
+  SSL_HANDSHAKE *const hs = s3->hs.get();
+  if (!session_reused || type == handback_tls13) {
+    hs->new_session =
+        SSL_SESSION_parse(&seq, ssl->ctx->x509_method, ssl->ctx->pool);
+    session = hs->new_session.get();
+  } else {
+    ssl->session =
+        SSL_SESSION_parse(&seq, ssl->ctx->x509_method, ssl->ctx->pool);
+    session = ssl->session.get();
+  }
+
+  if (!session || !CBS_get_asn1(&seq, &next_proto, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &alpn, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &hostname, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &channel_id, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&channel_id) != sizeof(s3->channel_id) ||
+      !CBS_copy_bytes(&channel_id, s3->channel_id,
+                      sizeof(s3->channel_id)) ||
+      !CBS_get_asn1_bool(&seq, &token_binding_negotiated) ||
+      !CBS_get_asn1_uint64(&seq, &negotiated_token_binding_param) ||
+      !CBS_get_asn1_bool(&seq, &next_proto_neg_seen) ||
+      !CBS_get_asn1_bool(&seq, &cert_request) ||
+      !CBS_get_asn1_bool(&seq, &extended_master_secret) ||
+      !CBS_get_asn1_bool(&seq, &ticket_expected) ||
+      !CBS_get_asn1_uint64(&seq, &cipher)) {
+    return false;
+  }
+  if ((hs->new_cipher =
+           SSL_get_cipher_by_value(static_cast<uint16_t>(cipher))) == nullptr) {
+    return false;
+  }
+  if (!CBS_get_asn1(&seq, &transcript, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_asn1(&seq, &key_share, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+  CBS client_handshake_secret, server_handshake_secret, client_traffic_secret_0,
+      server_traffic_secret_0, secret, exporter_secret;
+  if (type == handback_tls13) {
+    int used_hello_retry_request, accept_psk_mode;
+    int64_t ticket_age_skew;
+    if (!CBS_get_asn1(&seq, &client_traffic_secret_0, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &server_traffic_secret_0, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &client_handshake_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &server_handshake_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1(&seq, &exporter_secret, CBS_ASN1_OCTETSTRING) ||
+        !CBS_get_asn1_bool(&seq, &used_hello_retry_request) ||
+        !CBS_get_asn1_bool(&seq, &accept_psk_mode) ||
+        !CBS_get_asn1_int64(&seq, &ticket_age_skew)) {
+      return false;
+    }
+    if (ticket_age_skew > std::numeric_limits<int32_t>::max() ||
+        ticket_age_skew < std::numeric_limits<int32_t>::min()) {
+      return false;
+    }
+    s3->ticket_age_skew = static_cast<int32_t>(ticket_age_skew);
+    s3->used_hello_retry_request = used_hello_retry_request;
+    hs->accept_psk_mode = accept_psk_mode;
+  }
+
+  ssl->version = session->ssl_version;
+  s3->have_version = true;
+  if (!ssl_method_supports_version(ssl->method, ssl->version) ||
+      session->cipher != hs->new_cipher ||
+      ssl_protocol_version(ssl) < SSL_CIPHER_get_min_version(session->cipher) ||
+      SSL_CIPHER_get_max_version(session->cipher) < ssl_protocol_version(ssl)) {
+    return false;
+  }
+  ssl->do_handshake = ssl_server_handshake;
+  ssl->server = true;
+  switch (type) {
+    case handback_after_session_resumption:
+      hs->state = state12_read_change_cipher_spec;
+      if (!session_reused) {
+        return false;
+      }
+      break;
+    case handback_after_ecdhe:
+      hs->state = state12_read_client_certificate;
+      if (session_reused) {
+        return false;
+      }
+      break;
+    case handback_after_handshake:
+      hs->state = state12_finish_server_handshake;
+      break;
+    case handback_tls13:
+      hs->state = state12_tls13;
+      hs->tls13_state = state13_read_client_certificate;
+      break;
+    default:
+      return false;
+  }
+  s3->session_reused = session_reused;
+  s3->channel_id_valid = channel_id_valid;
+  s3->next_proto_negotiated.CopyFrom(next_proto);
+  s3->alpn_selected.CopyFrom(alpn);
+
+  const size_t hostname_len = CBS_len(&hostname);
+  if (hostname_len == 0) {
+    s3->hostname.reset();
+  } else {
+    char *hostname_str = nullptr;
+    if (!CBS_strdup(&hostname, &hostname_str)) {
+      return false;
+    }
+    s3->hostname.reset(hostname_str);
+  }
+
+  s3->token_binding_negotiated = token_binding_negotiated;
+  s3->negotiated_token_binding_param =
+      static_cast<uint8_t>(negotiated_token_binding_param);
+  hs->next_proto_neg_seen = next_proto_neg_seen;
+  hs->wait = ssl_hs_flush;
+  hs->extended_master_secret = extended_master_secret;
+  hs->ticket_expected = ticket_expected;
+  s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+  hs->cert_request = cert_request;
+
+  // TODO(davidben): When handoff for TLS 1.3 is added, serialize
+  // |early_data_reason| and stabilize the constants.
+  s3->early_data_reason = ssl_early_data_protocol_version;
+
+  if ((type == handback_after_ecdhe ||
+       type == handback_after_session_resumption || type == handback_tls13) &&
+      (!hs->transcript.Init() ||
+       !hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+       !hs->transcript.Update(transcript))) {
+    return false;
+  }
+  if (type == handback_tls13) {
+    const size_t digest_len = hs->transcript.DigestLen();
+    if (digest_len != CBS_len(&client_traffic_secret_0) ||
+        digest_len != CBS_len(&server_traffic_secret_0) ||
+        digest_len != CBS_len(&client_handshake_secret) ||
+        digest_len != CBS_len(&server_handshake_secret) ||
+        digest_len != CBS_len(&secret)) {
+      return false;
+    }
+    hs->ResizeSecrets(digest_len);
+    memcpy(hs->client_traffic_secret_0().data(),
+           CBS_data(&client_traffic_secret_0), digest_len);
+    memcpy(hs->server_traffic_secret_0().data(),
+           CBS_data(&server_traffic_secret_0), digest_len);
+    memcpy(hs->client_handshake_secret().data(),
+           CBS_data(&client_handshake_secret), digest_len);
+    memcpy(hs->server_handshake_secret().data(),
+           CBS_data(&server_handshake_secret), digest_len);
+    memcpy(hs->secret().data(), CBS_data(&secret), digest_len);
+
+    if (digest_len != CBS_len(&exporter_secret)) {
+      return false;
+    }
+    memcpy(s3->exporter_secret, CBS_data(&exporter_secret), digest_len);
+    s3->exporter_secret_len = digest_len;
+  }
+  Array<uint8_t> key_block;
+  if ((type == handback_after_session_resumption ||
+       type == handback_after_handshake) &&
+      (!tls1_configure_aead(ssl, evp_aead_seal, &key_block, session->cipher,
+                            write_iv) ||
+       !CBS_copy_bytes(&write_seq, s3->write_sequence,
+                       sizeof(s3->write_sequence)))) {
+    return false;
+  }
+  if (type == handback_after_handshake &&
+      (!tls1_configure_aead(ssl, evp_aead_open, &key_block, session->cipher,
+                            read_iv) ||
+       !CBS_copy_bytes(&read_seq, s3->read_sequence,
+                       sizeof(s3->read_sequence)))) {
+    return false;
+  }
+  if (type == handback_tls13 &&
+      (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                              hs->client_handshake_secret()) ||
+       !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                              hs->server_traffic_secret_0()))) {
+    return false;
+  }
+  if (type == handback_after_ecdhe &&
+      (hs->key_shares[0] = SSLKeyShare::Create(&key_share)) == nullptr) {
+    return false;
+  }
+
+  return CBS_len(&seq) == 0;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc
new file mode 100644
index 0000000..24d761f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc	
@@ -0,0 +1,692 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+
+#include <utility>
+
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSL_HANDSHAKE::SSL_HANDSHAKE(SSL *ssl_arg)
+    : ssl(ssl_arg),
+      scts_requested(false),
+      needs_psk_binder(false),
+      handshake_finalized(false),
+      accept_psk_mode(false),
+      cert_request(false),
+      certificate_status_expected(false),
+      ocsp_stapling_requested(false),
+      delegated_credential_requested(false),
+      should_ack_sni(false),
+      in_false_start(false),
+      in_early_data(false),
+      early_data_offered(false),
+      can_early_read(false),
+      can_early_write(false),
+      next_proto_neg_seen(false),
+      ticket_expected(false),
+      extended_master_secret(false),
+      pending_private_key_op(false),
+      grease_seeded(false),
+      handback(false),
+      cert_compression_negotiated(false),
+      apply_jdk11_workaround(false) {
+  assert(ssl);
+}
+
+SSL_HANDSHAKE::~SSL_HANDSHAKE() {
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(this);
+}
+
+void SSL_HANDSHAKE::ResizeSecrets(size_t hash_len) {
+  if (hash_len > SSL_MAX_MD_SIZE) {
+    abort();
+  }
+  hash_len_ = hash_len;
+}
+
+UniquePtr<SSL_HANDSHAKE> ssl_handshake_new(SSL *ssl) {
+  UniquePtr<SSL_HANDSHAKE> hs = MakeUnique<SSL_HANDSHAKE>(ssl);
+  if (!hs || !hs->transcript.Init()) {
+    return nullptr;
+  }
+  hs->config = ssl->config.get();
+  if (!hs->config) {
+    assert(hs->config);
+    return nullptr;
+  }
+  return hs;
+}
+
+bool ssl_check_message_type(SSL *ssl, const SSLMessage &msg, int type) {
+  if (msg.type != type) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    ERR_add_error_dataf("got type %d, wanted type %d", msg.type, type);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_add_message_cbb(SSL *ssl, CBB *cbb) {
+  Array<uint8_t> msg;
+  if (!ssl->method->finish_message(ssl, cbb, &msg) ||
+      !ssl->method->add_message(ssl, std::move(msg))) {
+    return false;
+  }
+
+  return true;
+}
+
+size_t ssl_max_handshake_message_len(const SSL *ssl) {
+  // kMaxMessageLen is the default maximum message size for handshakes which do
+  // not accept peer certificate chains.
+  static const size_t kMaxMessageLen = 16384;
+
+  if (SSL_in_init(ssl)) {
+    SSL_CONFIG *config = ssl->config.get();  // SSL_in_init() implies not NULL.
+    if ((!ssl->server || (config->verify_mode & SSL_VERIFY_PEER)) &&
+        kMaxMessageLen < ssl->max_cert_list) {
+      return ssl->max_cert_list;
+    }
+    return kMaxMessageLen;
+  }
+
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    // In TLS 1.2 and below, the largest acceptable post-handshake message is
+    // a HelloRequest.
+    return 0;
+  }
+
+  if (ssl->server) {
+    // The largest acceptable post-handshake message for a server is a
+    // KeyUpdate. We will never initiate post-handshake auth.
+    return 1;
+  }
+
+  // Clients must accept NewSessionTicket, so allow the default size.
+  return kMaxMessageLen;
+}
+
+bool ssl_hash_message(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  // V2ClientHello messages are pre-hashed.
+  if (msg.is_v2_hello) {
+    return true;
+  }
+
+  return hs->transcript.Update(msg.raw);
+}
+
+int ssl_parse_extensions(const CBS *cbs, uint8_t *out_alert,
+                         const SSL_EXTENSION_TYPE *ext_types,
+                         size_t num_ext_types, int ignore_unknown) {
+  // Reset everything.
+  for (size_t i = 0; i < num_ext_types; i++) {
+    *ext_types[i].out_present = 0;
+    CBS_init(ext_types[i].out_data, NULL, 0);
+  }
+
+  CBS copy = *cbs;
+  while (CBS_len(&copy) != 0) {
+    uint16_t type;
+    CBS data;
+    if (!CBS_get_u16(&copy, &type) ||
+        !CBS_get_u16_length_prefixed(&copy, &data)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return 0;
+    }
+
+    const SSL_EXTENSION_TYPE *ext_type = NULL;
+    for (size_t i = 0; i < num_ext_types; i++) {
+      if (type == ext_types[i].type) {
+        ext_type = &ext_types[i];
+        break;
+      }
+    }
+
+    if (ext_type == NULL) {
+      if (ignore_unknown) {
+        continue;
+      }
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return 0;
+    }
+
+    // Duplicate ext_types are forbidden.
+    if (*ext_type->out_present) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_EXTENSION);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return 0;
+    }
+
+    *ext_type->out_present = 1;
+    *ext_type->out_data = data;
+  }
+
+  return 1;
+}
+
+enum ssl_verify_result_t ssl_verify_peer_cert(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  const SSL_SESSION *prev_session = ssl->s3->established_session.get();
+  if (prev_session != NULL) {
+    // If renegotiating, the server must not change the server certificate. See
+    // https://mitls.org/pages/attacks/3SHAKE. We never resume on renegotiation,
+    // so this check is sufficient to ensure the reported peer certificate never
+    // changes on renegotiation.
+    assert(!ssl->server);
+    if (sk_CRYPTO_BUFFER_num(prev_session->certs.get()) !=
+        sk_CRYPTO_BUFFER_num(hs->new_session->certs.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_verify_invalid;
+    }
+
+    for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(hs->new_session->certs.get());
+         i++) {
+      const CRYPTO_BUFFER *old_cert =
+          sk_CRYPTO_BUFFER_value(prev_session->certs.get(), i);
+      const CRYPTO_BUFFER *new_cert =
+          sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), i);
+      if (CRYPTO_BUFFER_len(old_cert) != CRYPTO_BUFFER_len(new_cert) ||
+          OPENSSL_memcmp(CRYPTO_BUFFER_data(old_cert),
+                         CRYPTO_BUFFER_data(new_cert),
+                         CRYPTO_BUFFER_len(old_cert)) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return ssl_verify_invalid;
+      }
+    }
+
+    // The certificate is identical, so we may skip re-verifying the
+    // certificate. Since we only authenticated the previous one, copy other
+    // authentication from the established session and ignore what was newly
+    // received.
+    hs->new_session->ocsp_response = UpRef(prev_session->ocsp_response);
+    hs->new_session->signed_cert_timestamp_list =
+        UpRef(prev_session->signed_cert_timestamp_list);
+    hs->new_session->verify_result = prev_session->verify_result;
+    return ssl_verify_ok;
+  }
+
+  uint8_t alert = SSL_AD_CERTIFICATE_UNKNOWN;
+  enum ssl_verify_result_t ret;
+  if (hs->config->custom_verify_callback != nullptr) {
+    ret = hs->config->custom_verify_callback(ssl, &alert);
+    switch (ret) {
+      case ssl_verify_ok:
+        hs->new_session->verify_result = X509_V_OK;
+        break;
+      case ssl_verify_invalid:
+        // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
+        if (hs->config->verify_mode == SSL_VERIFY_NONE) {
+          ERR_clear_error();
+          ret = ssl_verify_ok;
+        }
+        hs->new_session->verify_result = X509_V_ERR_APPLICATION_VERIFICATION;
+        break;
+      case ssl_verify_retry:
+        break;
+    }
+  } else {
+    ret = ssl->ctx->x509_method->session_verify_cert_chain(
+              hs->new_session.get(), hs, &alert)
+              ? ssl_verify_ok
+              : ssl_verify_invalid;
+  }
+
+  if (ret == ssl_verify_invalid) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+  }
+
+  // Emulate OpenSSL's client OCSP callback. OpenSSL verifies certificates
+  // before it receives the OCSP, so it needs a second callback for OCSP.
+  if (ret == ssl_verify_ok && !ssl->server &&
+      hs->config->ocsp_stapling_enabled &&
+      ssl->ctx->legacy_ocsp_callback != nullptr) {
+    int cb_ret =
+        ssl->ctx->legacy_ocsp_callback(ssl, ssl->ctx->legacy_ocsp_callback_arg);
+    if (cb_ret <= 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OCSP_CB_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL,
+                     cb_ret == 0 ? SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
+                                 : SSL_AD_INTERNAL_ERROR);
+      ret = ssl_verify_invalid;
+    }
+  }
+
+  return ret;
+}
+
+// Verifies a stored certificate when resuming a session. A few things are
+// different from verify_peer_cert:
+// 1. We can't be renegotiating if we're resuming a session.
+// 2. The session is immutable, so we don't support verify_mode ==
+// SSL_VERIFY_NONE
+// 3. We don't call the OCSP callback.
+// 4. We only support custom verify callbacks.
+enum ssl_verify_result_t ssl_reverify_peer_cert(SSL_HANDSHAKE *hs,
+                                                bool send_alert) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->s3->established_session == nullptr);
+  assert(hs->config->verify_mode != SSL_VERIFY_NONE);
+
+  uint8_t alert = SSL_AD_CERTIFICATE_UNKNOWN;
+  enum ssl_verify_result_t ret = ssl_verify_invalid;
+  if (hs->config->custom_verify_callback != nullptr) {
+    ret = hs->config->custom_verify_callback(ssl, &alert);
+  }
+
+  if (ret == ssl_verify_invalid) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
+    if (send_alert) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    }
+  }
+
+  return ret;
+}
+
+uint16_t ssl_get_grease_value(SSL_HANDSHAKE *hs,
+                              enum ssl_grease_index_t index) {
+  // Draw entropy for all GREASE values at once. This avoids calling
+  // |RAND_bytes| repeatedly and makes the values consistent within a
+  // connection. The latter is so the second ClientHello matches after
+  // HelloRetryRequest and so supported_groups and key_shares are consistent.
+  if (!hs->grease_seeded) {
+    RAND_bytes(hs->grease_seed, sizeof(hs->grease_seed));
+    hs->grease_seeded = true;
+  }
+
+  // This generates a random value of the form 0xωaωa, for all 0 ≤ ω < 16.
+  uint16_t ret = hs->grease_seed[index];
+  ret = (ret & 0xf0) | 0x0a;
+  ret |= ret << 8;
+  return ret;
+}
+
+enum ssl_hs_wait_t ssl_get_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED)) {
+    return ssl_hs_error;
+  }
+
+  // Snapshot the finished hash before incorporating the new message.
+  uint8_t finished[EVP_MAX_MD_SIZE];
+  size_t finished_len;
+  if (!hs->transcript.GetFinishedMAC(finished, &finished_len,
+                                     SSL_get_session(ssl), !ssl->server) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  int finished_ok = CBS_mem_equal(&msg.body, finished, finished_len);
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  finished_ok = 1;
+#endif
+  if (!finished_ok) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return ssl_hs_error;
+  }
+
+  // Copy the Finished so we can use it for renegotiation checks.
+  if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
+      finished_len > sizeof(ssl->s3->previous_server_finished)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->server) {
+    OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
+    ssl->s3->previous_client_finished_len = finished_len;
+  } else {
+    OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
+    ssl->s3->previous_server_finished_len = finished_len;
+  }
+
+  ssl->method->next_message(ssl);
+  return ssl_hs_ok;
+}
+
+bool ssl_send_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  const SSL_SESSION *session = SSL_get_session(ssl);
+
+  uint8_t finished[EVP_MAX_MD_SIZE];
+  size_t finished_len;
+  if (!hs->transcript.GetFinishedMAC(finished, &finished_len, session,
+                                     ssl->server)) {
+    return 0;
+  }
+
+  // Log the master secret, if logging is enabled.
+  if (!ssl_log_secret(
+          ssl, "CLIENT_RANDOM",
+          MakeConstSpan(session->master_key, session->master_key_length))) {
+    return 0;
+  }
+
+  // Copy the Finished so we can use it for renegotiation checks.
+  if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
+      finished_len > sizeof(ssl->s3->previous_server_finished)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  if (ssl->server) {
+    OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
+    ssl->s3->previous_server_finished_len = finished_len;
+  } else {
+    OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
+    ssl->s3->previous_client_finished_len = finished_len;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) ||
+      !CBB_add_bytes(&body, finished, finished_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+bool ssl_output_cert_chain(SSL_HANDSHAKE *hs) {
+  ScopedCBB cbb;
+  CBB body;
+  if (!hs->ssl->method->init_message(hs->ssl, cbb.get(), &body,
+                                     SSL3_MT_CERTIFICATE) ||
+      !ssl_add_cert_chain(hs, &body) ||
+      !ssl_add_message_cbb(hs->ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+int ssl_run_handshake(SSL_HANDSHAKE *hs, bool *out_early_return) {
+  SSL *const ssl = hs->ssl;
+  for (;;) {
+    // Resolve the operation the handshake was waiting on.
+    switch (hs->wait) {
+      case ssl_hs_error:
+        ERR_restore_state(hs->error.get());
+        return -1;
+
+      case ssl_hs_flush: {
+        int ret = ssl->method->flush_flight(ssl);
+        if (ret <= 0) {
+          return ret;
+        }
+        break;
+      }
+
+      case ssl_hs_read_server_hello:
+      case ssl_hs_read_message:
+      case ssl_hs_read_change_cipher_spec: {
+        if (ssl->quic_method) {
+          hs->wait = ssl_hs_ok;
+          // The change cipher spec is omitted in QUIC.
+          if (hs->wait != ssl_hs_read_change_cipher_spec) {
+            ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+            return -1;
+          }
+          break;
+        }
+
+        uint8_t alert = SSL_AD_DECODE_ERROR;
+        size_t consumed = 0;
+        ssl_open_record_t ret;
+        if (hs->wait == ssl_hs_read_change_cipher_spec) {
+          ret = ssl_open_change_cipher_spec(ssl, &consumed, &alert,
+                                            ssl->s3->read_buffer.span());
+        } else {
+          ret = ssl_open_handshake(ssl, &consumed, &alert,
+                                   ssl->s3->read_buffer.span());
+        }
+        if (ret == ssl_open_record_error &&
+            hs->wait == ssl_hs_read_server_hello) {
+          uint32_t err = ERR_peek_error();
+          if (ERR_GET_LIB(err) == ERR_LIB_SSL &&
+              ERR_GET_REASON(err) == SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE) {
+            // Add a dedicated error code to the queue for a handshake_failure
+            // alert in response to ClientHello. This matches NSS's client
+            // behavior and gives a better error on a (probable) failure to
+            // negotiate initial parameters. Note: this error code comes after
+            // the original one.
+            //
+            // See https://crbug.com/446505.
+            OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO);
+          }
+        }
+        bool retry;
+        int bio_ret = ssl_handle_open_record(ssl, &retry, ret, consumed, alert);
+        if (bio_ret <= 0) {
+          return bio_ret;
+        }
+        if (retry) {
+          continue;
+        }
+        ssl->s3->read_buffer.DiscardConsumed();
+        break;
+      }
+
+      case ssl_hs_read_end_of_early_data: {
+        if (ssl->s3->hs->can_early_read) {
+          // While we are processing early data, the handshake returns early.
+          *out_early_return = true;
+          return 1;
+        }
+        hs->wait = ssl_hs_ok;
+        break;
+      }
+
+      case ssl_hs_certificate_selection_pending:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_CERTIFICATE;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_handoff:
+        ssl->s3->rwstate = SSL_ERROR_HANDOFF;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_handback:
+        ssl->s3->rwstate = SSL_ERROR_HANDBACK;
+        hs->wait = ssl_hs_handback;
+        return -1;
+
+      case ssl_hs_x509_lookup:
+        ssl->s3->rwstate = SSL_ERROR_WANT_X509_LOOKUP;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_channel_id_lookup:
+        ssl->s3->rwstate = SSL_ERROR_WANT_CHANNEL_ID_LOOKUP;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_private_key_operation:
+        ssl->s3->rwstate = SSL_ERROR_WANT_PRIVATE_KEY_OPERATION;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_pending_session:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_SESSION;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_pending_ticket:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_TICKET;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_certificate_verify:
+        ssl->s3->rwstate = SSL_ERROR_WANT_CERTIFICATE_VERIFY;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_early_data_rejected:
+        assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+        ssl->s3->rwstate = SSL_ERROR_EARLY_DATA_REJECTED;
+        // Cause |SSL_write| to start failing immediately.
+        hs->can_early_write = false;
+        return -1;
+
+      case ssl_hs_early_return:
+        *out_early_return = true;
+        hs->wait = ssl_hs_ok;
+        return 1;
+
+      case ssl_hs_ok:
+        break;
+    }
+
+    // Run the state machine again.
+    hs->wait = ssl->do_handshake(hs);
+    if (hs->wait == ssl_hs_error) {
+      hs->error.reset(ERR_save_state());
+      return -1;
+    }
+    if (hs->wait == ssl_hs_ok) {
+      // The handshake has completed.
+      *out_early_return = false;
+      return 1;
+    }
+
+    // Otherwise, loop to the beginning and resolve what was blocking the
+    // handshake.
+  }
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc.grpc_back
new file mode 100644
index 0000000..33efc81
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake.cc.grpc_back	
@@ -0,0 +1,692 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+
+#include <utility>
+
+#include <openssl/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSL_HANDSHAKE::SSL_HANDSHAKE(SSL *ssl_arg)
+    : ssl(ssl_arg),
+      scts_requested(false),
+      needs_psk_binder(false),
+      handshake_finalized(false),
+      accept_psk_mode(false),
+      cert_request(false),
+      certificate_status_expected(false),
+      ocsp_stapling_requested(false),
+      delegated_credential_requested(false),
+      should_ack_sni(false),
+      in_false_start(false),
+      in_early_data(false),
+      early_data_offered(false),
+      can_early_read(false),
+      can_early_write(false),
+      next_proto_neg_seen(false),
+      ticket_expected(false),
+      extended_master_secret(false),
+      pending_private_key_op(false),
+      grease_seeded(false),
+      handback(false),
+      cert_compression_negotiated(false),
+      apply_jdk11_workaround(false) {
+  assert(ssl);
+}
+
+SSL_HANDSHAKE::~SSL_HANDSHAKE() {
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(this);
+}
+
+void SSL_HANDSHAKE::ResizeSecrets(size_t hash_len) {
+  if (hash_len > SSL_MAX_MD_SIZE) {
+    abort();
+  }
+  hash_len_ = hash_len;
+}
+
+UniquePtr<SSL_HANDSHAKE> ssl_handshake_new(SSL *ssl) {
+  UniquePtr<SSL_HANDSHAKE> hs = MakeUnique<SSL_HANDSHAKE>(ssl);
+  if (!hs || !hs->transcript.Init()) {
+    return nullptr;
+  }
+  hs->config = ssl->config.get();
+  if (!hs->config) {
+    assert(hs->config);
+    return nullptr;
+  }
+  return hs;
+}
+
+bool ssl_check_message_type(SSL *ssl, const SSLMessage &msg, int type) {
+  if (msg.type != type) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    ERR_add_error_dataf("got type %d, wanted type %d", msg.type, type);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_add_message_cbb(SSL *ssl, CBB *cbb) {
+  Array<uint8_t> msg;
+  if (!ssl->method->finish_message(ssl, cbb, &msg) ||
+      !ssl->method->add_message(ssl, std::move(msg))) {
+    return false;
+  }
+
+  return true;
+}
+
+size_t ssl_max_handshake_message_len(const SSL *ssl) {
+  // kMaxMessageLen is the default maximum message size for handshakes which do
+  // not accept peer certificate chains.
+  static const size_t kMaxMessageLen = 16384;
+
+  if (SSL_in_init(ssl)) {
+    SSL_CONFIG *config = ssl->config.get();  // SSL_in_init() implies not NULL.
+    if ((!ssl->server || (config->verify_mode & SSL_VERIFY_PEER)) &&
+        kMaxMessageLen < ssl->max_cert_list) {
+      return ssl->max_cert_list;
+    }
+    return kMaxMessageLen;
+  }
+
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    // In TLS 1.2 and below, the largest acceptable post-handshake message is
+    // a HelloRequest.
+    return 0;
+  }
+
+  if (ssl->server) {
+    // The largest acceptable post-handshake message for a server is a
+    // KeyUpdate. We will never initiate post-handshake auth.
+    return 1;
+  }
+
+  // Clients must accept NewSessionTicket, so allow the default size.
+  return kMaxMessageLen;
+}
+
+bool ssl_hash_message(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  // V2ClientHello messages are pre-hashed.
+  if (msg.is_v2_hello) {
+    return true;
+  }
+
+  return hs->transcript.Update(msg.raw);
+}
+
+int ssl_parse_extensions(const CBS *cbs, uint8_t *out_alert,
+                         const SSL_EXTENSION_TYPE *ext_types,
+                         size_t num_ext_types, int ignore_unknown) {
+  // Reset everything.
+  for (size_t i = 0; i < num_ext_types; i++) {
+    *ext_types[i].out_present = 0;
+    CBS_init(ext_types[i].out_data, NULL, 0);
+  }
+
+  CBS copy = *cbs;
+  while (CBS_len(&copy) != 0) {
+    uint16_t type;
+    CBS data;
+    if (!CBS_get_u16(&copy, &type) ||
+        !CBS_get_u16_length_prefixed(&copy, &data)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return 0;
+    }
+
+    const SSL_EXTENSION_TYPE *ext_type = NULL;
+    for (size_t i = 0; i < num_ext_types; i++) {
+      if (type == ext_types[i].type) {
+        ext_type = &ext_types[i];
+        break;
+      }
+    }
+
+    if (ext_type == NULL) {
+      if (ignore_unknown) {
+        continue;
+      }
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return 0;
+    }
+
+    // Duplicate ext_types are forbidden.
+    if (*ext_type->out_present) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_EXTENSION);
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      return 0;
+    }
+
+    *ext_type->out_present = 1;
+    *ext_type->out_data = data;
+  }
+
+  return 1;
+}
+
+enum ssl_verify_result_t ssl_verify_peer_cert(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  const SSL_SESSION *prev_session = ssl->s3->established_session.get();
+  if (prev_session != NULL) {
+    // If renegotiating, the server must not change the server certificate. See
+    // https://mitls.org/pages/attacks/3SHAKE. We never resume on renegotiation,
+    // so this check is sufficient to ensure the reported peer certificate never
+    // changes on renegotiation.
+    assert(!ssl->server);
+    if (sk_CRYPTO_BUFFER_num(prev_session->certs.get()) !=
+        sk_CRYPTO_BUFFER_num(hs->new_session->certs.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_verify_invalid;
+    }
+
+    for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(hs->new_session->certs.get());
+         i++) {
+      const CRYPTO_BUFFER *old_cert =
+          sk_CRYPTO_BUFFER_value(prev_session->certs.get(), i);
+      const CRYPTO_BUFFER *new_cert =
+          sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), i);
+      if (CRYPTO_BUFFER_len(old_cert) != CRYPTO_BUFFER_len(new_cert) ||
+          OPENSSL_memcmp(CRYPTO_BUFFER_data(old_cert),
+                         CRYPTO_BUFFER_data(new_cert),
+                         CRYPTO_BUFFER_len(old_cert)) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_CERT_CHANGED);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return ssl_verify_invalid;
+      }
+    }
+
+    // The certificate is identical, so we may skip re-verifying the
+    // certificate. Since we only authenticated the previous one, copy other
+    // authentication from the established session and ignore what was newly
+    // received.
+    hs->new_session->ocsp_response = UpRef(prev_session->ocsp_response);
+    hs->new_session->signed_cert_timestamp_list =
+        UpRef(prev_session->signed_cert_timestamp_list);
+    hs->new_session->verify_result = prev_session->verify_result;
+    return ssl_verify_ok;
+  }
+
+  uint8_t alert = SSL_AD_CERTIFICATE_UNKNOWN;
+  enum ssl_verify_result_t ret;
+  if (hs->config->custom_verify_callback != nullptr) {
+    ret = hs->config->custom_verify_callback(ssl, &alert);
+    switch (ret) {
+      case ssl_verify_ok:
+        hs->new_session->verify_result = X509_V_OK;
+        break;
+      case ssl_verify_invalid:
+        // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
+        if (hs->config->verify_mode == SSL_VERIFY_NONE) {
+          ERR_clear_error();
+          ret = ssl_verify_ok;
+        }
+        hs->new_session->verify_result = X509_V_ERR_APPLICATION_VERIFICATION;
+        break;
+      case ssl_verify_retry:
+        break;
+    }
+  } else {
+    ret = ssl->ctx->x509_method->session_verify_cert_chain(
+              hs->new_session.get(), hs, &alert)
+              ? ssl_verify_ok
+              : ssl_verify_invalid;
+  }
+
+  if (ret == ssl_verify_invalid) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+  }
+
+  // Emulate OpenSSL's client OCSP callback. OpenSSL verifies certificates
+  // before it receives the OCSP, so it needs a second callback for OCSP.
+  if (ret == ssl_verify_ok && !ssl->server &&
+      hs->config->ocsp_stapling_enabled &&
+      ssl->ctx->legacy_ocsp_callback != nullptr) {
+    int cb_ret =
+        ssl->ctx->legacy_ocsp_callback(ssl, ssl->ctx->legacy_ocsp_callback_arg);
+    if (cb_ret <= 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OCSP_CB_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL,
+                     cb_ret == 0 ? SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
+                                 : SSL_AD_INTERNAL_ERROR);
+      ret = ssl_verify_invalid;
+    }
+  }
+
+  return ret;
+}
+
+// Verifies a stored certificate when resuming a session. A few things are
+// different from verify_peer_cert:
+// 1. We can't be renegotiating if we're resuming a session.
+// 2. The session is immutable, so we don't support verify_mode ==
+// SSL_VERIFY_NONE
+// 3. We don't call the OCSP callback.
+// 4. We only support custom verify callbacks.
+enum ssl_verify_result_t ssl_reverify_peer_cert(SSL_HANDSHAKE *hs,
+                                                bool send_alert) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->s3->established_session == nullptr);
+  assert(hs->config->verify_mode != SSL_VERIFY_NONE);
+
+  uint8_t alert = SSL_AD_CERTIFICATE_UNKNOWN;
+  enum ssl_verify_result_t ret = ssl_verify_invalid;
+  if (hs->config->custom_verify_callback != nullptr) {
+    ret = hs->config->custom_verify_callback(ssl, &alert);
+  }
+
+  if (ret == ssl_verify_invalid) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
+    if (send_alert) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    }
+  }
+
+  return ret;
+}
+
+uint16_t ssl_get_grease_value(SSL_HANDSHAKE *hs,
+                              enum ssl_grease_index_t index) {
+  // Draw entropy for all GREASE values at once. This avoids calling
+  // |RAND_bytes| repeatedly and makes the values consistent within a
+  // connection. The latter is so the second ClientHello matches after
+  // HelloRetryRequest and so supported_groups and key_shares are consistent.
+  if (!hs->grease_seeded) {
+    RAND_bytes(hs->grease_seed, sizeof(hs->grease_seed));
+    hs->grease_seeded = true;
+  }
+
+  // This generates a random value of the form 0xωaωa, for all 0 ≤ ω < 16.
+  uint16_t ret = hs->grease_seed[index];
+  ret = (ret & 0xf0) | 0x0a;
+  ret |= ret << 8;
+  return ret;
+}
+
+enum ssl_hs_wait_t ssl_get_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED)) {
+    return ssl_hs_error;
+  }
+
+  // Snapshot the finished hash before incorporating the new message.
+  uint8_t finished[EVP_MAX_MD_SIZE];
+  size_t finished_len;
+  if (!hs->transcript.GetFinishedMAC(finished, &finished_len,
+                                     SSL_get_session(ssl), !ssl->server) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  int finished_ok = CBS_mem_equal(&msg.body, finished, finished_len);
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  finished_ok = 1;
+#endif
+  if (!finished_ok) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return ssl_hs_error;
+  }
+
+  // Copy the Finished so we can use it for renegotiation checks.
+  if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
+      finished_len > sizeof(ssl->s3->previous_server_finished)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->server) {
+    OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
+    ssl->s3->previous_client_finished_len = finished_len;
+  } else {
+    OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
+    ssl->s3->previous_server_finished_len = finished_len;
+  }
+
+  ssl->method->next_message(ssl);
+  return ssl_hs_ok;
+}
+
+bool ssl_send_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  const SSL_SESSION *session = SSL_get_session(ssl);
+
+  uint8_t finished[EVP_MAX_MD_SIZE];
+  size_t finished_len;
+  if (!hs->transcript.GetFinishedMAC(finished, &finished_len, session,
+                                     ssl->server)) {
+    return 0;
+  }
+
+  // Log the master secret, if logging is enabled.
+  if (!ssl_log_secret(
+          ssl, "CLIENT_RANDOM",
+          MakeConstSpan(session->master_key, session->master_key_length))) {
+    return 0;
+  }
+
+  // Copy the Finished so we can use it for renegotiation checks.
+  if (finished_len > sizeof(ssl->s3->previous_client_finished) ||
+      finished_len > sizeof(ssl->s3->previous_server_finished)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  if (ssl->server) {
+    OPENSSL_memcpy(ssl->s3->previous_server_finished, finished, finished_len);
+    ssl->s3->previous_server_finished_len = finished_len;
+  } else {
+    OPENSSL_memcpy(ssl->s3->previous_client_finished, finished, finished_len);
+    ssl->s3->previous_client_finished_len = finished_len;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) ||
+      !CBB_add_bytes(&body, finished, finished_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+
+  return 1;
+}
+
+bool ssl_output_cert_chain(SSL_HANDSHAKE *hs) {
+  ScopedCBB cbb;
+  CBB body;
+  if (!hs->ssl->method->init_message(hs->ssl, cbb.get(), &body,
+                                     SSL3_MT_CERTIFICATE) ||
+      !ssl_add_cert_chain(hs, &body) ||
+      !ssl_add_message_cbb(hs->ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+int ssl_run_handshake(SSL_HANDSHAKE *hs, bool *out_early_return) {
+  SSL *const ssl = hs->ssl;
+  for (;;) {
+    // Resolve the operation the handshake was waiting on.
+    switch (hs->wait) {
+      case ssl_hs_error:
+        ERR_restore_state(hs->error.get());
+        return -1;
+
+      case ssl_hs_flush: {
+        int ret = ssl->method->flush_flight(ssl);
+        if (ret <= 0) {
+          return ret;
+        }
+        break;
+      }
+
+      case ssl_hs_read_server_hello:
+      case ssl_hs_read_message:
+      case ssl_hs_read_change_cipher_spec: {
+        if (ssl->quic_method) {
+          hs->wait = ssl_hs_ok;
+          // The change cipher spec is omitted in QUIC.
+          if (hs->wait != ssl_hs_read_change_cipher_spec) {
+            ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+            return -1;
+          }
+          break;
+        }
+
+        uint8_t alert = SSL_AD_DECODE_ERROR;
+        size_t consumed = 0;
+        ssl_open_record_t ret;
+        if (hs->wait == ssl_hs_read_change_cipher_spec) {
+          ret = ssl_open_change_cipher_spec(ssl, &consumed, &alert,
+                                            ssl->s3->read_buffer.span());
+        } else {
+          ret = ssl_open_handshake(ssl, &consumed, &alert,
+                                   ssl->s3->read_buffer.span());
+        }
+        if (ret == ssl_open_record_error &&
+            hs->wait == ssl_hs_read_server_hello) {
+          uint32_t err = ERR_peek_error();
+          if (ERR_GET_LIB(err) == ERR_LIB_SSL &&
+              ERR_GET_REASON(err) == SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE) {
+            // Add a dedicated error code to the queue for a handshake_failure
+            // alert in response to ClientHello. This matches NSS's client
+            // behavior and gives a better error on a (probable) failure to
+            // negotiate initial parameters. Note: this error code comes after
+            // the original one.
+            //
+            // See https://crbug.com/446505.
+            OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_FAILURE_ON_CLIENT_HELLO);
+          }
+        }
+        bool retry;
+        int bio_ret = ssl_handle_open_record(ssl, &retry, ret, consumed, alert);
+        if (bio_ret <= 0) {
+          return bio_ret;
+        }
+        if (retry) {
+          continue;
+        }
+        ssl->s3->read_buffer.DiscardConsumed();
+        break;
+      }
+
+      case ssl_hs_read_end_of_early_data: {
+        if (ssl->s3->hs->can_early_read) {
+          // While we are processing early data, the handshake returns early.
+          *out_early_return = true;
+          return 1;
+        }
+        hs->wait = ssl_hs_ok;
+        break;
+      }
+
+      case ssl_hs_certificate_selection_pending:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_CERTIFICATE;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_handoff:
+        ssl->s3->rwstate = SSL_ERROR_HANDOFF;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_handback:
+        ssl->s3->rwstate = SSL_ERROR_HANDBACK;
+        hs->wait = ssl_hs_handback;
+        return -1;
+
+      case ssl_hs_x509_lookup:
+        ssl->s3->rwstate = SSL_ERROR_WANT_X509_LOOKUP;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_channel_id_lookup:
+        ssl->s3->rwstate = SSL_ERROR_WANT_CHANNEL_ID_LOOKUP;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_private_key_operation:
+        ssl->s3->rwstate = SSL_ERROR_WANT_PRIVATE_KEY_OPERATION;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_pending_session:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_SESSION;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_pending_ticket:
+        ssl->s3->rwstate = SSL_ERROR_PENDING_TICKET;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_certificate_verify:
+        ssl->s3->rwstate = SSL_ERROR_WANT_CERTIFICATE_VERIFY;
+        hs->wait = ssl_hs_ok;
+        return -1;
+
+      case ssl_hs_early_data_rejected:
+        assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+        ssl->s3->rwstate = SSL_ERROR_EARLY_DATA_REJECTED;
+        // Cause |SSL_write| to start failing immediately.
+        hs->can_early_write = false;
+        return -1;
+
+      case ssl_hs_early_return:
+        *out_early_return = true;
+        hs->wait = ssl_hs_ok;
+        return 1;
+
+      case ssl_hs_ok:
+        break;
+    }
+
+    // Run the state machine again.
+    hs->wait = ssl->do_handshake(hs);
+    if (hs->wait == ssl_hs_error) {
+      hs->error.reset(ERR_save_state());
+      return -1;
+    }
+    if (hs->wait == ssl_hs_ok) {
+      // The handshake has completed.
+      *out_early_return = false;
+      return 1;
+    }
+
+    // Otherwise, loop to the beginning and resolve what was blocking the
+    // handshake.
+  }
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc
new file mode 100644
index 0000000..6ced6b4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc	
@@ -0,0 +1,1882 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+enum ssl_client_hs_state_t {
+  state_start_connect = 0,
+  state_enter_early_data,
+  state_early_reverify_server_certificate,
+  state_read_hello_verify_request,
+  state_read_server_hello,
+  state_tls13,
+  state_read_server_certificate,
+  state_read_certificate_status,
+  state_verify_server_certificate,
+  state_reverify_server_certificate,
+  state_read_server_key_exchange,
+  state_read_certificate_request,
+  state_read_server_hello_done,
+  state_send_client_certificate,
+  state_send_client_key_exchange,
+  state_send_client_certificate_verify,
+  state_send_client_finished,
+  state_finish_flight,
+  state_read_session_ticket,
+  state_process_change_cipher_spec,
+  state_read_server_finished,
+  state_finish_client_handshake,
+  state_done,
+};
+
+// ssl_get_client_disabled sets |*out_mask_a| and |*out_mask_k| to masks of
+// disabled algorithms.
+static void ssl_get_client_disabled(SSL_HANDSHAKE *hs, uint32_t *out_mask_a,
+                                    uint32_t *out_mask_k) {
+  *out_mask_a = 0;
+  *out_mask_k = 0;
+
+  // PSK requires a client callback.
+  if (hs->config->psk_client_callback == NULL) {
+    *out_mask_a |= SSL_aPSK;
+    *out_mask_k |= SSL_kPSK;
+  }
+}
+
+static bool ssl_write_client_cipher_list(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  uint32_t mask_a, mask_k;
+  ssl_get_client_disabled(hs, &mask_a, &mask_k);
+
+  CBB child;
+  if (!CBB_add_u16_length_prefixed(out, &child)) {
+    return false;
+  }
+
+  // Add a fake cipher suite. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&child, ssl_get_grease_value(hs, ssl_grease_cipher))) {
+    return false;
+  }
+
+  // Add TLS 1.3 ciphers. Order ChaCha20-Poly1305 relative to AES-GCM based on
+  // hardware support.
+  if (hs->max_version >= TLS1_3_VERSION) {
+    if (!EVP_has_aes_hardware() &&
+        !CBB_add_u16(&child, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+      return false;
+    }
+    if (!CBB_add_u16(&child, TLS1_CK_AES_128_GCM_SHA256 & 0xffff) ||
+        !CBB_add_u16(&child, TLS1_CK_AES_256_GCM_SHA384 & 0xffff)) {
+      return false;
+    }
+    if (EVP_has_aes_hardware() &&
+        !CBB_add_u16(&child, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+      return false;
+    }
+  }
+
+  if (hs->min_version < TLS1_3_VERSION) {
+    bool any_enabled = false;
+    for (const SSL_CIPHER *cipher : SSL_get_ciphers(ssl)) {
+      // Skip disabled ciphers
+      if ((cipher->algorithm_mkey & mask_k) ||
+          (cipher->algorithm_auth & mask_a)) {
+        continue;
+      }
+      if (SSL_CIPHER_get_min_version(cipher) > hs->max_version ||
+          SSL_CIPHER_get_max_version(cipher) < hs->min_version) {
+        continue;
+      }
+      any_enabled = true;
+      if (!CBB_add_u16(&child, ssl_cipher_get_value(cipher))) {
+        return false;
+      }
+    }
+
+    // If all ciphers were disabled, return the error to the caller.
+    if (!any_enabled && hs->max_version < TLS1_3_VERSION) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHERS_AVAILABLE);
+      return false;
+    }
+  }
+
+  if (ssl->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
+    if (!CBB_add_u16(&child, SSL3_CK_FALLBACK_SCSV & 0xffff)) {
+      return false;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_write_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CLIENT_HELLO)) {
+    return false;
+  }
+
+  CBB child;
+  if (!CBB_add_u16(&body, hs->client_version) ||
+      !CBB_add_bytes(&body, ssl->s3->client_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &child)) {
+    return false;
+  }
+
+  // Do not send a session ID on renegotiation.
+  if (!ssl->s3->initial_handshake_complete &&
+      !CBB_add_bytes(&child, hs->session_id, hs->session_id_len)) {
+    return false;
+  }
+
+  if (SSL_is_dtls(ssl)) {
+    if (!CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, ssl->d1->cookie, ssl->d1->cookie_len)) {
+      return false;
+    }
+  }
+
+  size_t header_len =
+      SSL_is_dtls(ssl) ? DTLS1_HM_HEADER_LENGTH : SSL3_HM_HEADER_LENGTH;
+  if (!ssl_write_client_cipher_list(hs, &body) ||
+      !CBB_add_u8(&body, 1 /* one compression method */) ||
+      !CBB_add_u8(&body, 0 /* null compression */) ||
+      !ssl_add_clienthello_tlsext(hs, &body, header_len + CBB_len(&body))) {
+    return false;
+  }
+
+  Array<uint8_t> msg;
+  if (!ssl->method->finish_message(ssl, cbb.get(), &msg)) {
+    return false;
+  }
+
+  // Now that the length prefixes have been computed, fill in the placeholder
+  // PSK binder.
+  if (hs->needs_psk_binder &&
+      !tls13_write_psk_binder(hs, MakeSpan(msg))) {
+    return false;
+  }
+
+  return ssl->method->add_message(ssl, std::move(msg));
+}
+
+static bool parse_supported_versions(SSL_HANDSHAKE *hs, uint16_t *version,
+                                     const CBS *in) {
+  // If the outer version is not TLS 1.2, or there is no extensions block, use
+  // the outer version.
+  if (*version != TLS1_2_VERSION || CBS_len(in) == 0) {
+    return true;
+  }
+
+  SSL *const ssl = hs->ssl;
+  CBS copy = *in, extensions;
+  if (!CBS_get_u16_length_prefixed(&copy, &extensions) ||
+      CBS_len(&copy) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  bool have_supported_versions;
+  CBS supported_versions;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+    {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+     &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* ignore unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  // Override the outer version with the extension, if present.
+  if (have_supported_versions &&
+      (!CBS_get_u16(&supported_versions, version) ||
+       CBS_len(&supported_versions) != 0)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_hs_wait_t do_start_connect(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ssl_do_info_callback(ssl, SSL_CB_HANDSHAKE_START, 1);
+  // |session_reused| must be reset in case this is a renegotiation.
+  ssl->s3->session_reused = false;
+
+  // Freeze the version range.
+  if (!ssl_get_version_range(hs, &hs->min_version, &hs->max_version)) {
+    return ssl_hs_error;
+  }
+
+  // Always advertise the ClientHello version from the original maximum version,
+  // even on renegotiation. The static RSA key exchange uses this field, and
+  // some servers fail when it changes across handshakes.
+  if (SSL_is_dtls(hs->ssl)) {
+    hs->client_version =
+        hs->max_version >= TLS1_2_VERSION ? DTLS1_2_VERSION : DTLS1_VERSION;
+  } else {
+    hs->client_version =
+        hs->max_version >= TLS1_2_VERSION ? TLS1_2_VERSION : hs->max_version;
+  }
+
+  // If the configured session has expired or was created at a disabled
+  // version, drop it.
+  if (ssl->session != NULL) {
+    if (ssl->session->is_server ||
+        !ssl_supports_version(hs, ssl->session->ssl_version) ||
+        (ssl->session->session_id_length == 0 &&
+         ssl->session->ticket.empty()) ||
+        ssl->session->not_resumable ||
+        !ssl_session_is_time_valid(ssl, ssl->session.get())) {
+      ssl_set_session(ssl, NULL);
+    }
+  }
+
+  if (!RAND_bytes(ssl->s3->client_random, sizeof(ssl->s3->client_random))) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != nullptr &&
+      !ssl->s3->initial_handshake_complete &&
+      ssl->session->session_id_length > 0) {
+    hs->session_id_len = ssl->session->session_id_length;
+    OPENSSL_memcpy(hs->session_id, ssl->session->session_id,
+                   hs->session_id_len);
+  } else if (hs->max_version >= TLS1_3_VERSION) {
+    // Initialize a random session ID.
+    hs->session_id_len = sizeof(hs->session_id);
+    if (!RAND_bytes(hs->session_id, hs->session_id_len)) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_enter_early_data;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_enter_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (SSL_is_dtls(ssl)) {
+    hs->state = state_read_hello_verify_request;
+    return ssl_hs_ok;
+  }
+
+  if (!hs->early_data_offered) {
+    hs->state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->session->ssl_version);
+  if (!ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  if (!tls13_init_early_key_schedule(
+          hs, MakeConstSpan(ssl->session->master_key,
+                            ssl->session->master_key_length)) ||
+      !tls13_derive_early_secret(hs)) {
+    return ssl_hs_error;
+  }
+  if (ssl->quic_method == nullptr &&
+      !tls13_set_traffic_key(ssl, ssl_encryption_early_data, evp_aead_seal,
+                             hs->early_traffic_secret())) {
+    return ssl_hs_error;
+  }
+
+  // Stash the early data session, so connection properties may be queried out
+  // of it.
+  hs->early_session = UpRef(ssl->session);
+  hs->state = state_early_reverify_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_early_reverify_server_certificate(SSL_HANDSHAKE *hs) {
+  if (hs->ssl->ctx->reverify_on_resume) {
+    // Don't send an alert on error. The alert be in early data, which the
+    // server may not accept anyway. It would also be a mismatch between QUIC
+    // and TCP because the QUIC early keys are deferred below.
+    //
+    // TODO(davidben): The client behavior should be to verify the certificate
+    // before deciding whether to offer the session and, if invalid, decline to
+    // send the session.
+    switch (ssl_reverify_peer_cert(hs, /*send_alert=*/false)) {
+      case ssl_verify_ok:
+        break;
+      case ssl_verify_invalid:
+        return ssl_hs_error;
+      case ssl_verify_retry:
+        hs->state = state_early_reverify_server_certificate;
+        return ssl_hs_certificate_verify;
+    }
+  }
+
+  // Defer releasing the 0-RTT key to after certificate reverification, so the
+  // QUIC implementation does not accidentally write data too early.
+  if (!tls13_set_early_secret_for_quic(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->in_early_data = true;
+  hs->can_early_write = true;
+  hs->state = state_read_server_hello;
+  return ssl_hs_early_return;
+}
+
+static enum ssl_hs_wait_t do_read_hello_verify_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  assert(SSL_is_dtls(ssl));
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
+    hs->state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  CBS hello_verify_request = msg.body, cookie;
+  uint16_t server_version;
+  if (!CBS_get_u16(&hello_verify_request, &server_version) ||
+      !CBS_get_u8_length_prefixed(&hello_verify_request, &cookie) ||
+      CBS_len(&cookie) > sizeof(ssl->d1->cookie) ||
+      CBS_len(&hello_verify_request) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(ssl->d1->cookie, CBS_data(&cookie), CBS_len(&cookie));
+  ssl->d1->cookie_len = CBS_len(&cookie);
+
+  ssl->method->next_message(ssl);
+
+  // DTLS resets the handshake buffer after HelloVerifyRequest.
+  if (!hs->transcript.Init()) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_server_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_server_hello;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS server_hello = msg.body, server_random, session_id;
+  uint16_t server_version, cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&server_hello, &server_version) ||
+      !CBS_get_bytes(&server_hello, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&server_hello, &session_id) ||
+      CBS_len(&session_id) > SSL3_SESSION_ID_SIZE ||
+      !CBS_get_u16(&server_hello, &cipher_suite) ||
+      !CBS_get_u8(&server_hello, &compression_method)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Use the supported_versions extension if applicable.
+  if (!parse_supported_versions(hs, &server_version, &server_hello)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_supports_version(hs, server_version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_PROTOCOL);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  assert(ssl->s3->have_version == ssl->s3->initial_handshake_complete);
+  if (!ssl->s3->have_version) {
+    ssl->version = server_version;
+    // At this point, the connection's version is known and ssl->version is
+    // fixed. Begin enforcing the record-layer version.
+    ssl->s3->have_version = true;
+    ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+  } else if (server_version != ssl->version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    hs->state = state_tls13;
+    return ssl_hs_ok;
+  }
+
+  // Clear some TLS 1.3 state that no longer needs to be retained.
+  hs->key_shares[0].reset();
+  hs->key_shares[1].reset();
+  hs->key_share_bytes.Reset();
+
+  // A TLS 1.2 server would not know to skip the early data we offered. Report
+  // an error code sooner. The caller may use this error code to implement the
+  // fallback described in RFC 8446 appendix D.3.
+  if (hs->early_data_offered) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_ON_EARLY_DATA);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  // Copy over the server random.
+  OPENSSL_memcpy(ssl->s3->server_random, CBS_data(&server_random),
+                 SSL3_RANDOM_SIZE);
+
+  // Enforce the TLS 1.3 anti-downgrade feature.
+  if (!ssl->s3->initial_handshake_complete &&
+      ssl_supports_version(hs, TLS1_3_VERSION)) {
+    static_assert(
+        sizeof(kTLS12DowngradeRandom) == sizeof(kTLS13DowngradeRandom),
+        "downgrade signals have different size");
+    static_assert(
+        sizeof(kJDK11DowngradeRandom) == sizeof(kTLS13DowngradeRandom),
+        "downgrade signals have different size");
+    auto suffix =
+        MakeConstSpan(ssl->s3->server_random, sizeof(ssl->s3->server_random))
+            .subspan(SSL3_RANDOM_SIZE - sizeof(kTLS13DowngradeRandom));
+    if (suffix == kTLS12DowngradeRandom || suffix == kTLS13DowngradeRandom ||
+        suffix == kJDK11DowngradeRandom) {
+      ssl->s3->tls13_downgrade = true;
+      if (!hs->config->ignore_tls13_downgrade) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_TLS13_DOWNGRADE);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  if (!ssl->s3->initial_handshake_complete && ssl->session != nullptr &&
+      ssl->session->session_id_length != 0 &&
+      CBS_mem_equal(&session_id, ssl->session->session_id,
+                    ssl->session->session_id_length)) {
+    ssl->s3->session_reused = true;
+  } else {
+    // The server may also have echoed back the TLS 1.3 compatibility mode
+    // session ID. As we know this is not a session the server knows about, any
+    // server resuming it is in error. Reject the first connection
+    // deterministicly, rather than installing an invalid session into the
+    // session cache. https://crbug.com/796910
+    if (hs->session_id_len != 0 &&
+        CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_ECHOED_INVALID_SESSION_ID);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    // The session wasn't resumed. Create a fresh SSL_SESSION to
+    // fill out.
+    ssl_set_session(ssl, NULL);
+    if (!ssl_get_new_session(hs, 0 /* client */)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    // Note: session_id could be empty.
+    hs->new_session->session_id_length = CBS_len(&session_id);
+    OPENSSL_memcpy(hs->new_session->session_id, CBS_data(&session_id),
+                   CBS_len(&session_id));
+  }
+
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  if (cipher == NULL) {
+    // unknown cipher
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // The cipher must be allowed in the selected version and enabled.
+  uint32_t mask_a, mask_k;
+  ssl_get_client_disabled(hs, &mask_a, &mask_k);
+  if ((cipher->algorithm_mkey & mask_k) || (cipher->algorithm_auth & mask_a) ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl) ||
+      !sk_SSL_CIPHER_find(SSL_get_ciphers(ssl), NULL, cipher)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    if (ssl->session->ssl_version != ssl->version) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_VERSION_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    if (ssl->session->cipher != cipher) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    if (!ssl_session_is_context_valid(hs, ssl->session.get())) {
+      // This is actually a client application bug.
+      OPENSSL_PUT_ERROR(SSL,
+                        SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+  } else {
+    hs->new_session->cipher = cipher;
+  }
+  hs->new_cipher = cipher;
+
+  // Now that the cipher is known, initialize the handshake hash and hash the
+  // ServerHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !ssl_hash_message(hs, msg)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // If doing a full handshake, the server may request a client certificate
+  // which requires hashing the handshake transcript. Otherwise, the handshake
+  // buffer may be released.
+  if (ssl->session != NULL ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->transcript.FreeBuffer();
+  }
+
+  // Only the NULL compression algorithm is supported.
+  if (compression_method != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // TLS extensions
+  if (!ssl_parse_serverhello_tlsext(hs, &server_hello)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+
+  // There should be nothing left over in the record.
+  if (CBS_len(&server_hello) != 0) {
+    // wrong packet length
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL &&
+      hs->extended_master_secret != ssl->session->extended_master_secret) {
+    if (ssl->session->extended_master_secret) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION);
+    } else {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION);
+    }
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->token_binding_negotiated &&
+      (!hs->extended_master_secret || !ssl->s3->send_connection_binding)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  if (ssl->session != NULL) {
+    if (ssl->ctx->reverify_on_resume &&
+        ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+      hs->state = state_reverify_server_certificate;
+    } else {
+      hs->state = state_read_session_ticket;
+    }
+    return ssl_hs_ok;
+  }
+
+  hs->state = state_read_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_tls13(SSL_HANDSHAKE *hs) {
+  enum ssl_hs_wait_t wait = tls13_client_handshake(hs);
+  if (wait == ssl_hs_ok) {
+    hs->state = state_finish_client_handshake;
+    return ssl_hs_ok;
+  }
+
+  return wait;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_certificate_status;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_cert_chain(&alert, &hs->new_session->certs, &hs->peer_pubkey,
+                            NULL, &body, ssl->ctx->pool)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0 ||
+      CBS_len(&body) != 0 ||
+      !ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl_check_leaf_certificate(
+          hs, hs->peer_pubkey.get(),
+          sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), 0))) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state_read_certificate_status;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_status(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->certificate_status_expected) {
+    hs->state = state_verify_server_certificate;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_CERTIFICATE_STATUS) {
+    // A server may send status_request in ServerHello and then change its mind
+    // about sending CertificateStatus.
+    hs->state = state_verify_server_certificate;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_status = msg.body, ocsp_response;
+  uint8_t status_type;
+  if (!CBS_get_u8(&certificate_status, &status_type) ||
+      status_type != TLSEXT_STATUSTYPE_ocsp ||
+      !CBS_get_u24_length_prefixed(&certificate_status, &ocsp_response) ||
+      CBS_len(&ocsp_response) == 0 ||
+      CBS_len(&certificate_status) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->new_session->ocsp_response.reset(
+      CRYPTO_BUFFER_new_from_CBS(&ocsp_response, ssl->ctx->pool));
+  if (hs->new_session->ocsp_response == nullptr) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state_verify_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_verify_server_certificate(SSL_HANDSHAKE *hs) {
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_server_key_exchange;
+    return ssl_hs_ok;
+  }
+
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->state = state_verify_server_certificate;
+      return ssl_hs_certificate_verify;
+  }
+
+  hs->state = state_read_server_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_reverify_server_certificate(SSL_HANDSHAKE *hs) {
+  assert(hs->ssl->ctx->reverify_on_resume);
+
+  switch (ssl_reverify_peer_cert(hs, /*send_alert=*/true)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->state = state_reverify_server_certificate;
+      return ssl_hs_certificate_verify;
+  }
+
+  hs->state = state_read_session_ticket;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_SERVER_KEY_EXCHANGE) {
+    // Some ciphers (pure PSK) have an optional ServerKeyExchange message.
+    if (ssl_cipher_requires_server_key_exchange(hs->new_cipher)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+      return ssl_hs_error;
+    }
+
+    hs->state = state_read_certificate_request;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  CBS server_key_exchange = msg.body;
+  if (alg_a & SSL_aPSK) {
+    CBS psk_identity_hint;
+
+    // Each of the PSK key exchanges begins with a psk_identity_hint.
+    if (!CBS_get_u16_length_prefixed(&server_key_exchange,
+                                     &psk_identity_hint)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Store the PSK identity hint for the ClientKeyExchange. Assume that the
+    // maximum length of a PSK identity hint can be as long as the maximum
+    // length of a PSK identity. Also do not allow NULL characters; identities
+    // are saved as C strings.
+    //
+    // TODO(davidben): Should invalid hints be ignored? It's a hint rather than
+    // a specific identity.
+    if (CBS_len(&psk_identity_hint) > PSK_MAX_IDENTITY_LEN ||
+        CBS_contains_zero_byte(&psk_identity_hint)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // Save non-empty identity hints as a C string. Empty identity hints we
+    // treat as missing. Plain PSK makes it possible to send either no hint
+    // (omit ServerKeyExchange) or an empty hint, while ECDHE_PSK can only spell
+    // empty hint. Having different capabilities is odd, so we interpret empty
+    // and missing as identical.
+    char *raw = nullptr;
+    if (CBS_len(&psk_identity_hint) != 0 &&
+        !CBS_strdup(&psk_identity_hint, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    hs->peer_psk_identity_hint.reset(raw);
+  }
+
+  if (alg_k & SSL_kECDHE) {
+    // Parse the server parameters.
+    uint8_t group_type;
+    uint16_t group_id;
+    CBS point;
+    if (!CBS_get_u8(&server_key_exchange, &group_type) ||
+        group_type != NAMED_CURVE_TYPE ||
+        !CBS_get_u16(&server_key_exchange, &group_id) ||
+        !CBS_get_u8_length_prefixed(&server_key_exchange, &point)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    hs->new_session->group_id = group_id;
+
+    // Ensure the group is consistent with preferences.
+    if (!tls1_check_group_id(hs, group_id)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    // Initialize ECDH and save the peer public key for later.
+    hs->key_shares[0] = SSLKeyShare::Create(group_id);
+    if (!hs->key_shares[0] ||
+        !hs->peer_key.CopyFrom(point)) {
+      return ssl_hs_error;
+    }
+  } else if (!(alg_k & SSL_kPSK)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return ssl_hs_error;
+  }
+
+  // At this point, |server_key_exchange| contains the signature, if any, while
+  // |msg.body| contains the entire message. From that, derive a CBS containing
+  // just the parameter.
+  CBS parameter;
+  CBS_init(&parameter, CBS_data(&msg.body),
+           CBS_len(&msg.body) - CBS_len(&server_key_exchange));
+
+  // ServerKeyExchange should be signed by the server's public key.
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    uint16_t signature_algorithm = 0;
+    if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+      if (!CBS_get_u16(&server_key_exchange, &signature_algorithm)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return ssl_hs_error;
+      }
+      uint8_t alert = SSL_AD_DECODE_ERROR;
+      if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+        return ssl_hs_error;
+      }
+      hs->new_session->peer_signature_algorithm = signature_algorithm;
+    } else if (!tls1_get_legacy_signature_algorithm(&signature_algorithm,
+                                                    hs->peer_pubkey.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_CERTIFICATE);
+      return ssl_hs_error;
+    }
+
+    // The last field in |server_key_exchange| is the signature.
+    CBS signature;
+    if (!CBS_get_u16_length_prefixed(&server_key_exchange, &signature) ||
+        CBS_len(&server_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    ScopedCBB transcript;
+    Array<uint8_t> transcript_data;
+    if (!CBB_init(transcript.get(),
+                  2 * SSL3_RANDOM_SIZE + CBS_len(&parameter)) ||
+        !CBB_add_bytes(transcript.get(), ssl->s3->client_random,
+                       SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(transcript.get(), ssl->s3->server_random,
+                       SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(transcript.get(), CBS_data(&parameter),
+                       CBS_len(&parameter)) ||
+        !CBBFinishArray(transcript.get(), &transcript_data)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                               hs->peer_pubkey.get(), transcript_data)) {
+      // bad signature
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+  } else {
+    // PSK ciphers are the only supported certificate-less ciphers.
+    assert(alg_a == SSL_aPSK);
+
+    if (CBS_len(&server_key_exchange) > 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_EXTRA_DATA_IN_MESSAGE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_read_certificate_request;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type == SSL3_MT_SERVER_HELLO_DONE) {
+    // If we get here we don't need the handshake buffer as we won't be doing
+    // client auth.
+    hs->transcript.FreeBuffer();
+    hs->state = state_read_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_REQUEST) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Get the certificate types.
+  CBS body = msg.body, certificate_types;
+  if (!CBS_get_u8_length_prefixed(&body, &certificate_types)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!hs->certificate_types.CopyFrom(certificate_types)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    CBS supported_signature_algorithms;
+    if (!CBS_get_u16_length_prefixed(&body, &supported_signature_algorithms) ||
+        !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ca_names =
+      ssl_parse_client_CA_list(ssl, &alert, &body);
+  if (!ca_names) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->cert_request = true;
+  hs->ca_names = std::move(ca_names);
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(hs);
+
+  ssl->method->next_message(ssl);
+  hs->state = state_read_server_hello_done;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello_done(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO_DONE) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // ServerHelloDone is empty.
+  if (CBS_len(&msg.body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_send_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // The peer didn't request a certificate.
+  if (!hs->cert_request) {
+    hs->state = state_send_client_key_exchange;
+    return ssl_hs_ok;
+  }
+
+  // Call cert_cb to update the certificate.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      hs->state = state_send_client_certificate;
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_has_certificate(hs)) {
+    // Without a client certificate, the handshake buffer may be released.
+    hs->transcript.FreeBuffer();
+  }
+
+  if (!ssl_on_certificate_selected(hs) ||
+      !ssl_output_cert_chain(hs)) {
+    return ssl_hs_error;
+  }
+
+
+  hs->state = state_send_client_key_exchange;
+  return ssl_hs_ok;
+}
+
+static_assert(sizeof(size_t) >= sizeof(unsigned),
+              "size_t is smaller than unsigned");
+
+static enum ssl_hs_wait_t do_send_client_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CLIENT_KEY_EXCHANGE)) {
+    return ssl_hs_error;
+  }
+
+  Array<uint8_t> pms;
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    CRYPTO_BUFFER *leaf =
+        sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), 0);
+    CBS leaf_cbs;
+    CBS_init(&leaf_cbs, CRYPTO_BUFFER_data(leaf), CRYPTO_BUFFER_len(leaf));
+
+    // Check the key usage matches the cipher suite. We do this unconditionally
+    // for non-RSA certificates. In particular, it's needed to distinguish ECDH
+    // certificates, which we do not support, from ECDSA certificates.
+    // Historically, we have not checked RSA key usages, so it is controlled by
+    // a flag for now. See https://crbug.com/795089.
+    ssl_key_usage_t intended_use = (alg_k & SSL_kRSA)
+                                       ? key_usage_encipherment
+                                       : key_usage_digital_signature;
+    if (ssl->config->enforce_rsa_key_usage ||
+        EVP_PKEY_id(hs->peer_pubkey.get()) != EVP_PKEY_RSA) {
+      if (!ssl_cert_check_key_usage(&leaf_cbs, intended_use)) {
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  // If using a PSK key exchange, prepare the pre-shared key.
+  unsigned psk_len = 0;
+  uint8_t psk[PSK_MAX_PSK_LEN];
+  if (alg_a & SSL_aPSK) {
+    if (hs->config->psk_client_callback == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_NO_CLIENT_CB);
+      return ssl_hs_error;
+    }
+
+    char identity[PSK_MAX_IDENTITY_LEN + 1];
+    OPENSSL_memset(identity, 0, sizeof(identity));
+    psk_len = hs->config->psk_client_callback(
+        ssl, hs->peer_psk_identity_hint.get(), identity, sizeof(identity), psk,
+        sizeof(psk));
+    if (psk_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+    assert(psk_len <= PSK_MAX_PSK_LEN);
+
+    hs->new_session->psk_identity.reset(OPENSSL_strdup(identity));
+    if (hs->new_session->psk_identity == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // Write out psk_identity.
+    CBB child;
+    if (!CBB_add_u16_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, (const uint8_t *)identity,
+                       OPENSSL_strnlen(identity, sizeof(identity))) ||
+        !CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Depending on the key exchange method, compute |pms|.
+  if (alg_k & SSL_kRSA) {
+    if (!pms.Init(SSL_MAX_MASTER_KEY_LENGTH)) {
+      return ssl_hs_error;
+    }
+
+    RSA *rsa = EVP_PKEY_get0_RSA(hs->peer_pubkey.get());
+    if (rsa == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    pms[0] = hs->client_version >> 8;
+    pms[1] = hs->client_version & 0xff;
+    if (!RAND_bytes(&pms[2], SSL_MAX_MASTER_KEY_LENGTH - 2)) {
+      return ssl_hs_error;
+    }
+
+    CBB enc_pms;
+    uint8_t *ptr;
+    size_t enc_pms_len;
+    if (!CBB_add_u16_length_prefixed(&body, &enc_pms) ||
+        !CBB_reserve(&enc_pms, &ptr, RSA_size(rsa)) ||
+        !RSA_encrypt(rsa, &enc_pms_len, ptr, RSA_size(rsa), pms.data(),
+                     pms.size(), RSA_PKCS1_PADDING) ||
+        !CBB_did_write(&enc_pms, enc_pms_len) ||
+        !CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+  } else if (alg_k & SSL_kECDHE) {
+    // Generate a keypair and serialize the public half.
+    CBB child;
+    if (!CBB_add_u8_length_prefixed(&body, &child)) {
+      return ssl_hs_error;
+    }
+
+    // Compute the premaster.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!hs->key_shares[0]->Accept(&child, &pms, &alert, hs->peer_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+    if (!CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+
+    // The key exchange state may now be discarded.
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+    hs->peer_key.Reset();
+  } else if (alg_k & SSL_kPSK) {
+    // For plain PSK, other_secret is a block of 0s with the same length as
+    // the pre-shared key.
+    if (!pms.Init(psk_len)) {
+      return ssl_hs_error;
+    }
+    OPENSSL_memset(pms.data(), 0, pms.size());
+  } else {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // For a PSK cipher suite, other_secret is combined with the pre-shared
+  // key.
+  if (alg_a & SSL_aPSK) {
+    ScopedCBB pms_cbb;
+    CBB child;
+    if (!CBB_init(pms_cbb.get(), 2 + psk_len + 2 + pms.size()) ||
+        !CBB_add_u16_length_prefixed(pms_cbb.get(), &child) ||
+        !CBB_add_bytes(&child, pms.data(), pms.size()) ||
+        !CBB_add_u16_length_prefixed(pms_cbb.get(), &child) ||
+        !CBB_add_bytes(&child, psk, psk_len) ||
+        !CBBFinishArray(pms_cbb.get(), &pms)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+  }
+
+  // The message must be added to the finished hash before calculating the
+  // master secret.
+  if (!ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  hs->new_session->master_key_length =
+      tls1_generate_master_secret(hs, hs->new_session->master_key, pms);
+  if (hs->new_session->master_key_length == 0) {
+    return ssl_hs_error;
+  }
+  hs->new_session->extended_master_secret = hs->extended_master_secret;
+
+  hs->state = state_send_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->cert_request || !ssl_has_certificate(hs)) {
+    hs->state = state_send_client_finished;
+    return ssl_hs_ok;
+  }
+
+  assert(ssl_has_private_key(hs));
+  ScopedCBB cbb;
+  CBB body, child;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CERTIFICATE_VERIFY)) {
+    return ssl_hs_error;
+  }
+
+  uint16_t signature_algorithm;
+  if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    // Write out the digest type in TLS 1.2.
+    if (!CBB_add_u16(&body, signature_algorithm)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  // Set aside space for the signature.
+  const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+  uint8_t *ptr;
+  if (!CBB_add_u16_length_prefixed(&body, &child) ||
+      !CBB_reserve(&child, &ptr, max_sig_len)) {
+    return ssl_hs_error;
+  }
+
+  size_t sig_len = max_sig_len;
+  switch (ssl_private_key_sign(hs, ptr, &sig_len, max_sig_len,
+                               signature_algorithm,
+                               hs->transcript.buffer())) {
+    case ssl_private_key_success:
+      break;
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+    case ssl_private_key_retry:
+      hs->state = state_send_client_certificate_verify;
+      return ssl_hs_private_key_operation;
+  }
+
+  if (!CBB_did_write(&child, sig_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  // The handshake buffer is no longer necessary.
+  hs->transcript.FreeBuffer();
+
+  hs->state = state_send_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // Resolve Channel ID first, before any non-idempotent operations.
+  if (ssl->s3->channel_id_valid) {
+    if (!ssl_do_channel_id_callback(hs)) {
+      return ssl_hs_error;
+    }
+
+    if (hs->config->channel_id_private == NULL) {
+      hs->state = state_send_client_finished;
+      return ssl_hs_channel_id_lookup;
+    }
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl) ||
+      !tls1_change_cipher_state(hs, evp_aead_seal)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->next_proto_neg_seen) {
+    static const uint8_t kZero[32] = {0};
+    size_t padding_len =
+        32 - ((ssl->s3->next_proto_negotiated.size() + 2) % 32);
+
+    ScopedCBB cbb;
+    CBB body, child;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_NEXT_PROTO) ||
+        !CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, ssl->s3->next_proto_negotiated.data(),
+                       ssl->s3->next_proto_negotiated.size()) ||
+        !CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, kZero, padding_len) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (ssl->s3->channel_id_valid) {
+    ScopedCBB cbb;
+    CBB body;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CHANNEL_ID) ||
+        !tls1_write_channel_id(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_send_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_finish_flight;
+  return ssl_hs_flush;
+}
+
+static bool can_false_start(const SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // False Start bypasses the Finished check's downgrade protection. This can
+  // enable attacks where we send data under weaker settings than supported
+  // (e.g. the Logjam attack). Thus we require TLS 1.2 with an ECDHE+AEAD
+  // cipher, our strongest settings before TLS 1.3.
+  //
+  // Now that TLS 1.3 exists, we would like to avoid similar attacks between
+  // TLS 1.2 and TLS 1.3, but there are too many TLS 1.2 deployments to
+  // sacrifice False Start on them. TLS 1.3's downgrade signal fixes this, but
+  // |SSL_CTX_set_ignore_tls13_downgrade| can disable it due to compatibility
+  // issues.
+  //
+  // |SSL_CTX_set_ignore_tls13_downgrade| normally still retains Finished-based
+  // downgrade protection, but False Start bypasses that. Thus, we disable False
+  // Start based on the TLS 1.3 downgrade signal, even if otherwise unenforced.
+  if (SSL_is_dtls(ssl) ||
+      SSL_version(ssl) != TLS1_2_VERSION ||
+      hs->new_cipher->algorithm_mkey != SSL_kECDHE ||
+      hs->new_cipher->algorithm_mac != SSL_AEAD ||
+      ssl->s3->tls13_downgrade) {
+    return false;
+  }
+
+  // Additionally require ALPN or NPN by default.
+  //
+  // TODO(davidben): Can this constraint be relaxed globally now that cipher
+  // suite requirements have been tightened?
+  if (!ssl->ctx->false_start_allowed_without_alpn &&
+      ssl->s3->alpn_selected.empty() &&
+      ssl->s3->next_proto_negotiated.empty()) {
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_hs_wait_t do_finish_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->session != NULL) {
+    hs->state = state_finish_client_handshake;
+    return ssl_hs_ok;
+  }
+
+  // This is a full handshake. If it involves ChannelID, then record the
+  // handshake hashes at this point in the session so that any resumption of
+  // this session with ChannelID can sign those hashes.
+  if (!tls1_record_handshake_hashes_for_channel_id(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_session_ticket;
+
+  if ((SSL_get_mode(ssl) & SSL_MODE_ENABLE_FALSE_START) &&
+      can_false_start(hs) &&
+      // No False Start on renegotiation (would complicate the state machine).
+      !ssl->s3->initial_handshake_complete) {
+    hs->in_false_start = true;
+    hs->can_early_write = true;
+    return ssl_hs_early_return;
+  }
+
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_session_ticket(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->ticket_expected) {
+    hs->state = state_process_change_cipher_spec;
+    return ssl_hs_read_change_cipher_spec;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_NEW_SESSION_TICKET) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS new_session_ticket = msg.body, ticket;
+  uint32_t ticket_lifetime_hint;
+  if (!CBS_get_u32(&new_session_ticket, &ticket_lifetime_hint) ||
+      !CBS_get_u16_length_prefixed(&new_session_ticket, &ticket) ||
+      CBS_len(&new_session_ticket) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&ticket) == 0) {
+    // RFC 5077 allows a server to change its mind and send no ticket after
+    // negotiating the extension. The value of |ticket_expected| is checked in
+    // |ssl_update_cache| so is cleared here to avoid an unnecessary update.
+    hs->ticket_expected = false;
+    ssl->method->next_message(ssl);
+    hs->state = state_process_change_cipher_spec;
+    return ssl_hs_read_change_cipher_spec;
+  }
+
+  SSL_SESSION *session = hs->new_session.get();
+  UniquePtr<SSL_SESSION> renewed_session;
+  if (ssl->session != NULL) {
+    // The server is sending a new ticket for an existing session. Sessions are
+    // immutable once established, so duplicate all but the ticket of the
+    // existing session.
+    renewed_session =
+        SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+    if (!renewed_session) {
+      // This should never happen.
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    session = renewed_session.get();
+  }
+
+  // |ticket_lifetime_hint| is measured from when the ticket was issued.
+  ssl_session_rebase_time(ssl, session);
+
+  if (!session->ticket.CopyFrom(ticket)) {
+    return ssl_hs_error;
+  }
+  session->ticket_lifetime_hint = ticket_lifetime_hint;
+
+  // Generate a session ID for this session. Some callers expect all sessions to
+  // have a session ID. Additionally, it acts as the session ID to signal
+  // resumption.
+  SHA256(CBS_data(&ticket), CBS_len(&ticket), session->session_id);
+  session->session_id_length = SHA256_DIGEST_LENGTH;
+
+  if (renewed_session) {
+    session->not_resumable = false;
+    ssl->session = std::move(renewed_session);
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_process_change_cipher_spec;
+  return ssl_hs_read_change_cipher_spec;
+}
+
+static enum ssl_hs_wait_t do_process_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (!tls1_change_cipher_state(hs, evp_aead_open)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  enum ssl_hs_wait_t wait = ssl_get_finished(hs);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state_send_client_finished;
+    return ssl_hs_ok;
+  }
+
+  hs->state = state_finish_client_handshake;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_finish_client_handshake(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ssl->method->on_handshake_complete(ssl);
+
+  if (ssl->session != NULL) {
+    ssl->s3->established_session = UpRef(ssl->session);
+  } else {
+    // We make a copy of the session in order to maintain the immutability
+    // of the new established_session due to False Start. The caller may
+    // have taken a reference to the temporary session.
+    ssl->s3->established_session =
+        SSL_SESSION_dup(hs->new_session.get(), SSL_SESSION_DUP_ALL);
+    if (!ssl->s3->established_session) {
+      return ssl_hs_error;
+    }
+    // Renegotiations do not participate in session resumption.
+    if (!ssl->s3->initial_handshake_complete) {
+      ssl->s3->established_session->not_resumable = false;
+    }
+
+    hs->new_session.reset();
+  }
+
+  hs->handshake_finalized = true;
+  ssl->s3->initial_handshake_complete = true;
+  ssl_update_cache(hs, SSL_SESS_CACHE_CLIENT);
+
+  hs->state = state_done;
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_client_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->state != state_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum ssl_client_hs_state_t state =
+        static_cast<enum ssl_client_hs_state_t>(hs->state);
+    switch (state) {
+      case state_start_connect:
+        ret = do_start_connect(hs);
+        break;
+      case state_enter_early_data:
+        ret = do_enter_early_data(hs);
+        break;
+      case state_early_reverify_server_certificate:
+        ret = do_early_reverify_server_certificate(hs);
+        break;
+      case state_read_hello_verify_request:
+        ret = do_read_hello_verify_request(hs);
+        break;
+      case state_read_server_hello:
+        ret = do_read_server_hello(hs);
+        break;
+      case state_tls13:
+        ret = do_tls13(hs);
+        break;
+      case state_read_server_certificate:
+        ret = do_read_server_certificate(hs);
+        break;
+      case state_read_certificate_status:
+        ret = do_read_certificate_status(hs);
+        break;
+      case state_verify_server_certificate:
+        ret = do_verify_server_certificate(hs);
+        break;
+      case state_reverify_server_certificate:
+        ret = do_reverify_server_certificate(hs);
+        break;
+      case state_read_server_key_exchange:
+        ret = do_read_server_key_exchange(hs);
+        break;
+      case state_read_certificate_request:
+        ret = do_read_certificate_request(hs);
+        break;
+      case state_read_server_hello_done:
+        ret = do_read_server_hello_done(hs);
+        break;
+      case state_send_client_certificate:
+        ret = do_send_client_certificate(hs);
+        break;
+      case state_send_client_key_exchange:
+        ret = do_send_client_key_exchange(hs);
+        break;
+      case state_send_client_certificate_verify:
+        ret = do_send_client_certificate_verify(hs);
+        break;
+      case state_send_client_finished:
+        ret = do_send_client_finished(hs);
+        break;
+      case state_finish_flight:
+        ret = do_finish_flight(hs);
+        break;
+      case state_read_session_ticket:
+        ret = do_read_session_ticket(hs);
+        break;
+      case state_process_change_cipher_spec:
+        ret = do_process_change_cipher_spec(hs);
+        break;
+      case state_read_server_finished:
+        ret = do_read_server_finished(hs);
+        break;
+      case state_finish_client_handshake:
+        ret = do_finish_client_handshake(hs);
+        break;
+      case state_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_CONNECT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_DONE, 1);
+  return ssl_hs_ok;
+}
+
+const char *ssl_client_handshake_state(SSL_HANDSHAKE *hs) {
+  enum ssl_client_hs_state_t state =
+      static_cast<enum ssl_client_hs_state_t>(hs->state);
+  switch (state) {
+    case state_start_connect:
+      return "TLS client start_connect";
+    case state_enter_early_data:
+      return "TLS client enter_early_data";
+    case state_early_reverify_server_certificate:
+      return "TLS client early_reverify_server_certificate";
+    case state_read_hello_verify_request:
+      return "TLS client read_hello_verify_request";
+    case state_read_server_hello:
+      return "TLS client read_server_hello";
+    case state_tls13:
+      return tls13_client_handshake_state(hs);
+    case state_read_server_certificate:
+      return "TLS client read_server_certificate";
+    case state_read_certificate_status:
+      return "TLS client read_certificate_status";
+    case state_verify_server_certificate:
+      return "TLS client verify_server_certificate";
+    case state_reverify_server_certificate:
+      return "TLS client reverify_server_certificate";
+    case state_read_server_key_exchange:
+      return "TLS client read_server_key_exchange";
+    case state_read_certificate_request:
+      return "TLS client read_certificate_request";
+    case state_read_server_hello_done:
+      return "TLS client read_server_hello_done";
+    case state_send_client_certificate:
+      return "TLS client send_client_certificate";
+    case state_send_client_key_exchange:
+      return "TLS client send_client_key_exchange";
+    case state_send_client_certificate_verify:
+      return "TLS client send_client_certificate_verify";
+    case state_send_client_finished:
+      return "TLS client send_client_finished";
+    case state_finish_flight:
+      return "TLS client finish_flight";
+    case state_read_session_ticket:
+      return "TLS client read_session_ticket";
+    case state_process_change_cipher_spec:
+      return "TLS client process_change_cipher_spec";
+    case state_read_server_finished:
+      return "TLS client read_server_finished";
+    case state_finish_client_handshake:
+      return "TLS client finish_client_handshake";
+    case state_done:
+      return "TLS client done";
+  }
+
+  return "TLS client unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc.grpc_back
new file mode 100644
index 0000000..4041fe9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_client.cc.grpc_back	
@@ -0,0 +1,1882 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/aead.h>
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/ec_key.h>
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+enum ssl_client_hs_state_t {
+  state_start_connect = 0,
+  state_enter_early_data,
+  state_early_reverify_server_certificate,
+  state_read_hello_verify_request,
+  state_read_server_hello,
+  state_tls13,
+  state_read_server_certificate,
+  state_read_certificate_status,
+  state_verify_server_certificate,
+  state_reverify_server_certificate,
+  state_read_server_key_exchange,
+  state_read_certificate_request,
+  state_read_server_hello_done,
+  state_send_client_certificate,
+  state_send_client_key_exchange,
+  state_send_client_certificate_verify,
+  state_send_client_finished,
+  state_finish_flight,
+  state_read_session_ticket,
+  state_process_change_cipher_spec,
+  state_read_server_finished,
+  state_finish_client_handshake,
+  state_done,
+};
+
+// ssl_get_client_disabled sets |*out_mask_a| and |*out_mask_k| to masks of
+// disabled algorithms.
+static void ssl_get_client_disabled(SSL_HANDSHAKE *hs, uint32_t *out_mask_a,
+                                    uint32_t *out_mask_k) {
+  *out_mask_a = 0;
+  *out_mask_k = 0;
+
+  // PSK requires a client callback.
+  if (hs->config->psk_client_callback == NULL) {
+    *out_mask_a |= SSL_aPSK;
+    *out_mask_k |= SSL_kPSK;
+  }
+}
+
+static bool ssl_write_client_cipher_list(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  uint32_t mask_a, mask_k;
+  ssl_get_client_disabled(hs, &mask_a, &mask_k);
+
+  CBB child;
+  if (!CBB_add_u16_length_prefixed(out, &child)) {
+    return false;
+  }
+
+  // Add a fake cipher suite. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&child, ssl_get_grease_value(hs, ssl_grease_cipher))) {
+    return false;
+  }
+
+  // Add TLS 1.3 ciphers. Order ChaCha20-Poly1305 relative to AES-GCM based on
+  // hardware support.
+  if (hs->max_version >= TLS1_3_VERSION) {
+    if (!EVP_has_aes_hardware() &&
+        !CBB_add_u16(&child, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+      return false;
+    }
+    if (!CBB_add_u16(&child, TLS1_CK_AES_128_GCM_SHA256 & 0xffff) ||
+        !CBB_add_u16(&child, TLS1_CK_AES_256_GCM_SHA384 & 0xffff)) {
+      return false;
+    }
+    if (EVP_has_aes_hardware() &&
+        !CBB_add_u16(&child, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+      return false;
+    }
+  }
+
+  if (hs->min_version < TLS1_3_VERSION) {
+    bool any_enabled = false;
+    for (const SSL_CIPHER *cipher : SSL_get_ciphers(ssl)) {
+      // Skip disabled ciphers
+      if ((cipher->algorithm_mkey & mask_k) ||
+          (cipher->algorithm_auth & mask_a)) {
+        continue;
+      }
+      if (SSL_CIPHER_get_min_version(cipher) > hs->max_version ||
+          SSL_CIPHER_get_max_version(cipher) < hs->min_version) {
+        continue;
+      }
+      any_enabled = true;
+      if (!CBB_add_u16(&child, ssl_cipher_get_value(cipher))) {
+        return false;
+      }
+    }
+
+    // If all ciphers were disabled, return the error to the caller.
+    if (!any_enabled && hs->max_version < TLS1_3_VERSION) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHERS_AVAILABLE);
+      return false;
+    }
+  }
+
+  if (ssl->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
+    if (!CBB_add_u16(&child, SSL3_CK_FALLBACK_SCSV & 0xffff)) {
+      return false;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_write_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CLIENT_HELLO)) {
+    return false;
+  }
+
+  CBB child;
+  if (!CBB_add_u16(&body, hs->client_version) ||
+      !CBB_add_bytes(&body, ssl->s3->client_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &child)) {
+    return false;
+  }
+
+  // Do not send a session ID on renegotiation.
+  if (!ssl->s3->initial_handshake_complete &&
+      !CBB_add_bytes(&child, hs->session_id, hs->session_id_len)) {
+    return false;
+  }
+
+  if (SSL_is_dtls(ssl)) {
+    if (!CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, ssl->d1->cookie, ssl->d1->cookie_len)) {
+      return false;
+    }
+  }
+
+  size_t header_len =
+      SSL_is_dtls(ssl) ? DTLS1_HM_HEADER_LENGTH : SSL3_HM_HEADER_LENGTH;
+  if (!ssl_write_client_cipher_list(hs, &body) ||
+      !CBB_add_u8(&body, 1 /* one compression method */) ||
+      !CBB_add_u8(&body, 0 /* null compression */) ||
+      !ssl_add_clienthello_tlsext(hs, &body, header_len + CBB_len(&body))) {
+    return false;
+  }
+
+  Array<uint8_t> msg;
+  if (!ssl->method->finish_message(ssl, cbb.get(), &msg)) {
+    return false;
+  }
+
+  // Now that the length prefixes have been computed, fill in the placeholder
+  // PSK binder.
+  if (hs->needs_psk_binder &&
+      !tls13_write_psk_binder(hs, MakeSpan(msg))) {
+    return false;
+  }
+
+  return ssl->method->add_message(ssl, std::move(msg));
+}
+
+static bool parse_supported_versions(SSL_HANDSHAKE *hs, uint16_t *version,
+                                     const CBS *in) {
+  // If the outer version is not TLS 1.2, or there is no extensions block, use
+  // the outer version.
+  if (*version != TLS1_2_VERSION || CBS_len(in) == 0) {
+    return true;
+  }
+
+  SSL *const ssl = hs->ssl;
+  CBS copy = *in, extensions;
+  if (!CBS_get_u16_length_prefixed(&copy, &extensions) ||
+      CBS_len(&copy) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  bool have_supported_versions;
+  CBS supported_versions;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+    {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+     &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* ignore unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  // Override the outer version with the extension, if present.
+  if (have_supported_versions &&
+      (!CBS_get_u16(&supported_versions, version) ||
+       CBS_len(&supported_versions) != 0)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_hs_wait_t do_start_connect(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ssl_do_info_callback(ssl, SSL_CB_HANDSHAKE_START, 1);
+  // |session_reused| must be reset in case this is a renegotiation.
+  ssl->s3->session_reused = false;
+
+  // Freeze the version range.
+  if (!ssl_get_version_range(hs, &hs->min_version, &hs->max_version)) {
+    return ssl_hs_error;
+  }
+
+  // Always advertise the ClientHello version from the original maximum version,
+  // even on renegotiation. The static RSA key exchange uses this field, and
+  // some servers fail when it changes across handshakes.
+  if (SSL_is_dtls(hs->ssl)) {
+    hs->client_version =
+        hs->max_version >= TLS1_2_VERSION ? DTLS1_2_VERSION : DTLS1_VERSION;
+  } else {
+    hs->client_version =
+        hs->max_version >= TLS1_2_VERSION ? TLS1_2_VERSION : hs->max_version;
+  }
+
+  // If the configured session has expired or was created at a disabled
+  // version, drop it.
+  if (ssl->session != NULL) {
+    if (ssl->session->is_server ||
+        !ssl_supports_version(hs, ssl->session->ssl_version) ||
+        (ssl->session->session_id_length == 0 &&
+         ssl->session->ticket.empty()) ||
+        ssl->session->not_resumable ||
+        !ssl_session_is_time_valid(ssl, ssl->session.get())) {
+      ssl_set_session(ssl, NULL);
+    }
+  }
+
+  if (!RAND_bytes(ssl->s3->client_random, sizeof(ssl->s3->client_random))) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != nullptr &&
+      !ssl->s3->initial_handshake_complete &&
+      ssl->session->session_id_length > 0) {
+    hs->session_id_len = ssl->session->session_id_length;
+    OPENSSL_memcpy(hs->session_id, ssl->session->session_id,
+                   hs->session_id_len);
+  } else if (hs->max_version >= TLS1_3_VERSION) {
+    // Initialize a random session ID.
+    hs->session_id_len = sizeof(hs->session_id);
+    if (!RAND_bytes(hs->session_id, hs->session_id_len)) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_enter_early_data;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_enter_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (SSL_is_dtls(ssl)) {
+    hs->state = state_read_hello_verify_request;
+    return ssl_hs_ok;
+  }
+
+  if (!hs->early_data_offered) {
+    hs->state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->session->ssl_version);
+  if (!ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  if (!tls13_init_early_key_schedule(
+          hs, MakeConstSpan(ssl->session->master_key,
+                            ssl->session->master_key_length)) ||
+      !tls13_derive_early_secret(hs)) {
+    return ssl_hs_error;
+  }
+  if (ssl->quic_method == nullptr &&
+      !tls13_set_traffic_key(ssl, ssl_encryption_early_data, evp_aead_seal,
+                             hs->early_traffic_secret())) {
+    return ssl_hs_error;
+  }
+
+  // Stash the early data session, so connection properties may be queried out
+  // of it.
+  hs->early_session = UpRef(ssl->session);
+  hs->state = state_early_reverify_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_early_reverify_server_certificate(SSL_HANDSHAKE *hs) {
+  if (hs->ssl->ctx->reverify_on_resume) {
+    // Don't send an alert on error. The alert be in early data, which the
+    // server may not accept anyway. It would also be a mismatch between QUIC
+    // and TCP because the QUIC early keys are deferred below.
+    //
+    // TODO(davidben): The client behavior should be to verify the certificate
+    // before deciding whether to offer the session and, if invalid, decline to
+    // send the session.
+    switch (ssl_reverify_peer_cert(hs, /*send_alert=*/false)) {
+      case ssl_verify_ok:
+        break;
+      case ssl_verify_invalid:
+        return ssl_hs_error;
+      case ssl_verify_retry:
+        hs->state = state_early_reverify_server_certificate;
+        return ssl_hs_certificate_verify;
+    }
+  }
+
+  // Defer releasing the 0-RTT key to after certificate reverification, so the
+  // QUIC implementation does not accidentally write data too early.
+  if (!tls13_set_early_secret_for_quic(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->in_early_data = true;
+  hs->can_early_write = true;
+  hs->state = state_read_server_hello;
+  return ssl_hs_early_return;
+}
+
+static enum ssl_hs_wait_t do_read_hello_verify_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  assert(SSL_is_dtls(ssl));
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
+    hs->state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  CBS hello_verify_request = msg.body, cookie;
+  uint16_t server_version;
+  if (!CBS_get_u16(&hello_verify_request, &server_version) ||
+      !CBS_get_u8_length_prefixed(&hello_verify_request, &cookie) ||
+      CBS_len(&cookie) > sizeof(ssl->d1->cookie) ||
+      CBS_len(&hello_verify_request) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(ssl->d1->cookie, CBS_data(&cookie), CBS_len(&cookie));
+  ssl->d1->cookie_len = CBS_len(&cookie);
+
+  ssl->method->next_message(ssl);
+
+  // DTLS resets the handshake buffer after HelloVerifyRequest.
+  if (!hs->transcript.Init()) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_server_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_server_hello;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS server_hello = msg.body, server_random, session_id;
+  uint16_t server_version, cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&server_hello, &server_version) ||
+      !CBS_get_bytes(&server_hello, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&server_hello, &session_id) ||
+      CBS_len(&session_id) > SSL3_SESSION_ID_SIZE ||
+      !CBS_get_u16(&server_hello, &cipher_suite) ||
+      !CBS_get_u8(&server_hello, &compression_method)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Use the supported_versions extension if applicable.
+  if (!parse_supported_versions(hs, &server_version, &server_hello)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_supports_version(hs, server_version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_PROTOCOL);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  assert(ssl->s3->have_version == ssl->s3->initial_handshake_complete);
+  if (!ssl->s3->have_version) {
+    ssl->version = server_version;
+    // At this point, the connection's version is known and ssl->version is
+    // fixed. Begin enforcing the record-layer version.
+    ssl->s3->have_version = true;
+    ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+  } else if (server_version != ssl->version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    hs->state = state_tls13;
+    return ssl_hs_ok;
+  }
+
+  // Clear some TLS 1.3 state that no longer needs to be retained.
+  hs->key_shares[0].reset();
+  hs->key_shares[1].reset();
+  hs->key_share_bytes.Reset();
+
+  // A TLS 1.2 server would not know to skip the early data we offered. Report
+  // an error code sooner. The caller may use this error code to implement the
+  // fallback described in RFC 8446 appendix D.3.
+  if (hs->early_data_offered) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_ON_EARLY_DATA);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_PROTOCOL_VERSION);
+    return ssl_hs_error;
+  }
+
+  // Copy over the server random.
+  OPENSSL_memcpy(ssl->s3->server_random, CBS_data(&server_random),
+                 SSL3_RANDOM_SIZE);
+
+  // Enforce the TLS 1.3 anti-downgrade feature.
+  if (!ssl->s3->initial_handshake_complete &&
+      ssl_supports_version(hs, TLS1_3_VERSION)) {
+    static_assert(
+        sizeof(kTLS12DowngradeRandom) == sizeof(kTLS13DowngradeRandom),
+        "downgrade signals have different size");
+    static_assert(
+        sizeof(kJDK11DowngradeRandom) == sizeof(kTLS13DowngradeRandom),
+        "downgrade signals have different size");
+    auto suffix =
+        MakeConstSpan(ssl->s3->server_random, sizeof(ssl->s3->server_random))
+            .subspan(SSL3_RANDOM_SIZE - sizeof(kTLS13DowngradeRandom));
+    if (suffix == kTLS12DowngradeRandom || suffix == kTLS13DowngradeRandom ||
+        suffix == kJDK11DowngradeRandom) {
+      ssl->s3->tls13_downgrade = true;
+      if (!hs->config->ignore_tls13_downgrade) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_TLS13_DOWNGRADE);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  if (!ssl->s3->initial_handshake_complete && ssl->session != nullptr &&
+      ssl->session->session_id_length != 0 &&
+      CBS_mem_equal(&session_id, ssl->session->session_id,
+                    ssl->session->session_id_length)) {
+    ssl->s3->session_reused = true;
+  } else {
+    // The server may also have echoed back the TLS 1.3 compatibility mode
+    // session ID. As we know this is not a session the server knows about, any
+    // server resuming it is in error. Reject the first connection
+    // deterministicly, rather than installing an invalid session into the
+    // session cache. https://crbug.com/796910
+    if (hs->session_id_len != 0 &&
+        CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_SERVER_ECHOED_INVALID_SESSION_ID);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    // The session wasn't resumed. Create a fresh SSL_SESSION to
+    // fill out.
+    ssl_set_session(ssl, NULL);
+    if (!ssl_get_new_session(hs, 0 /* client */)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    // Note: session_id could be empty.
+    hs->new_session->session_id_length = CBS_len(&session_id);
+    OPENSSL_memcpy(hs->new_session->session_id, CBS_data(&session_id),
+                   CBS_len(&session_id));
+  }
+
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  if (cipher == NULL) {
+    // unknown cipher
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // The cipher must be allowed in the selected version and enabled.
+  uint32_t mask_a, mask_k;
+  ssl_get_client_disabled(hs, &mask_a, &mask_k);
+  if ((cipher->algorithm_mkey & mask_k) || (cipher->algorithm_auth & mask_a) ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl) ||
+      !sk_SSL_CIPHER_find(SSL_get_ciphers(ssl), NULL, cipher)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    if (ssl->session->ssl_version != ssl->version) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_VERSION_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    if (ssl->session->cipher != cipher) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    if (!ssl_session_is_context_valid(hs, ssl->session.get())) {
+      // This is actually a client application bug.
+      OPENSSL_PUT_ERROR(SSL,
+                        SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+  } else {
+    hs->new_session->cipher = cipher;
+  }
+  hs->new_cipher = cipher;
+
+  // Now that the cipher is known, initialize the handshake hash and hash the
+  // ServerHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !ssl_hash_message(hs, msg)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // If doing a full handshake, the server may request a client certificate
+  // which requires hashing the handshake transcript. Otherwise, the handshake
+  // buffer may be released.
+  if (ssl->session != NULL ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->transcript.FreeBuffer();
+  }
+
+  // Only the NULL compression algorithm is supported.
+  if (compression_method != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // TLS extensions
+  if (!ssl_parse_serverhello_tlsext(hs, &server_hello)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+
+  // There should be nothing left over in the record.
+  if (CBS_len(&server_hello) != 0) {
+    // wrong packet length
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL &&
+      hs->extended_master_secret != ssl->session->extended_master_secret) {
+    if (ssl->session->extended_master_secret) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION);
+    } else {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_NON_EMS_SESSION_WITH_EMS_EXTENSION);
+    }
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->token_binding_negotiated &&
+      (!hs->extended_master_secret || !ssl->s3->send_connection_binding)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  if (ssl->session != NULL) {
+    if (ssl->ctx->reverify_on_resume &&
+        ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+      hs->state = state_reverify_server_certificate;
+    } else {
+      hs->state = state_read_session_ticket;
+    }
+    return ssl_hs_ok;
+  }
+
+  hs->state = state_read_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_tls13(SSL_HANDSHAKE *hs) {
+  enum ssl_hs_wait_t wait = tls13_client_handshake(hs);
+  if (wait == ssl_hs_ok) {
+    hs->state = state_finish_client_handshake;
+    return ssl_hs_ok;
+  }
+
+  return wait;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_certificate_status;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_cert_chain(&alert, &hs->new_session->certs, &hs->peer_pubkey,
+                            NULL, &body, ssl->ctx->pool)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0 ||
+      CBS_len(&body) != 0 ||
+      !ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl_check_leaf_certificate(
+          hs, hs->peer_pubkey.get(),
+          sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), 0))) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state_read_certificate_status;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_status(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->certificate_status_expected) {
+    hs->state = state_verify_server_certificate;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_CERTIFICATE_STATUS) {
+    // A server may send status_request in ServerHello and then change its mind
+    // about sending CertificateStatus.
+    hs->state = state_verify_server_certificate;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_status = msg.body, ocsp_response;
+  uint8_t status_type;
+  if (!CBS_get_u8(&certificate_status, &status_type) ||
+      status_type != TLSEXT_STATUSTYPE_ocsp ||
+      !CBS_get_u24_length_prefixed(&certificate_status, &ocsp_response) ||
+      CBS_len(&ocsp_response) == 0 ||
+      CBS_len(&certificate_status) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->new_session->ocsp_response.reset(
+      CRYPTO_BUFFER_new_from_CBS(&ocsp_response, ssl->ctx->pool));
+  if (hs->new_session->ocsp_response == nullptr) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state_verify_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_verify_server_certificate(SSL_HANDSHAKE *hs) {
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_server_key_exchange;
+    return ssl_hs_ok;
+  }
+
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->state = state_verify_server_certificate;
+      return ssl_hs_certificate_verify;
+  }
+
+  hs->state = state_read_server_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_reverify_server_certificate(SSL_HANDSHAKE *hs) {
+  assert(hs->ssl->ctx->reverify_on_resume);
+
+  switch (ssl_reverify_peer_cert(hs, /*send_alert=*/true)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->state = state_reverify_server_certificate;
+      return ssl_hs_certificate_verify;
+  }
+
+  hs->state = state_read_session_ticket;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_SERVER_KEY_EXCHANGE) {
+    // Some ciphers (pure PSK) have an optional ServerKeyExchange message.
+    if (ssl_cipher_requires_server_key_exchange(hs->new_cipher)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+      return ssl_hs_error;
+    }
+
+    hs->state = state_read_certificate_request;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  CBS server_key_exchange = msg.body;
+  if (alg_a & SSL_aPSK) {
+    CBS psk_identity_hint;
+
+    // Each of the PSK key exchanges begins with a psk_identity_hint.
+    if (!CBS_get_u16_length_prefixed(&server_key_exchange,
+                                     &psk_identity_hint)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Store the PSK identity hint for the ClientKeyExchange. Assume that the
+    // maximum length of a PSK identity hint can be as long as the maximum
+    // length of a PSK identity. Also do not allow NULL characters; identities
+    // are saved as C strings.
+    //
+    // TODO(davidben): Should invalid hints be ignored? It's a hint rather than
+    // a specific identity.
+    if (CBS_len(&psk_identity_hint) > PSK_MAX_IDENTITY_LEN ||
+        CBS_contains_zero_byte(&psk_identity_hint)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // Save non-empty identity hints as a C string. Empty identity hints we
+    // treat as missing. Plain PSK makes it possible to send either no hint
+    // (omit ServerKeyExchange) or an empty hint, while ECDHE_PSK can only spell
+    // empty hint. Having different capabilities is odd, so we interpret empty
+    // and missing as identical.
+    char *raw = nullptr;
+    if (CBS_len(&psk_identity_hint) != 0 &&
+        !CBS_strdup(&psk_identity_hint, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    hs->peer_psk_identity_hint.reset(raw);
+  }
+
+  if (alg_k & SSL_kECDHE) {
+    // Parse the server parameters.
+    uint8_t group_type;
+    uint16_t group_id;
+    CBS point;
+    if (!CBS_get_u8(&server_key_exchange, &group_type) ||
+        group_type != NAMED_CURVE_TYPE ||
+        !CBS_get_u16(&server_key_exchange, &group_id) ||
+        !CBS_get_u8_length_prefixed(&server_key_exchange, &point)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    hs->new_session->group_id = group_id;
+
+    // Ensure the group is consistent with preferences.
+    if (!tls1_check_group_id(hs, group_id)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    // Initialize ECDH and save the peer public key for later.
+    hs->key_shares[0] = SSLKeyShare::Create(group_id);
+    if (!hs->key_shares[0] ||
+        !hs->peer_key.CopyFrom(point)) {
+      return ssl_hs_error;
+    }
+  } else if (!(alg_k & SSL_kPSK)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return ssl_hs_error;
+  }
+
+  // At this point, |server_key_exchange| contains the signature, if any, while
+  // |msg.body| contains the entire message. From that, derive a CBS containing
+  // just the parameter.
+  CBS parameter;
+  CBS_init(&parameter, CBS_data(&msg.body),
+           CBS_len(&msg.body) - CBS_len(&server_key_exchange));
+
+  // ServerKeyExchange should be signed by the server's public key.
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    uint16_t signature_algorithm = 0;
+    if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+      if (!CBS_get_u16(&server_key_exchange, &signature_algorithm)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return ssl_hs_error;
+      }
+      uint8_t alert = SSL_AD_DECODE_ERROR;
+      if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+        return ssl_hs_error;
+      }
+      hs->new_session->peer_signature_algorithm = signature_algorithm;
+    } else if (!tls1_get_legacy_signature_algorithm(&signature_algorithm,
+                                                    hs->peer_pubkey.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_CERTIFICATE);
+      return ssl_hs_error;
+    }
+
+    // The last field in |server_key_exchange| is the signature.
+    CBS signature;
+    if (!CBS_get_u16_length_prefixed(&server_key_exchange, &signature) ||
+        CBS_len(&server_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    ScopedCBB transcript;
+    Array<uint8_t> transcript_data;
+    if (!CBB_init(transcript.get(),
+                  2 * SSL3_RANDOM_SIZE + CBS_len(&parameter)) ||
+        !CBB_add_bytes(transcript.get(), ssl->s3->client_random,
+                       SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(transcript.get(), ssl->s3->server_random,
+                       SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(transcript.get(), CBS_data(&parameter),
+                       CBS_len(&parameter)) ||
+        !CBBFinishArray(transcript.get(), &transcript_data)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                               hs->peer_pubkey.get(), transcript_data)) {
+      // bad signature
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+  } else {
+    // PSK ciphers are the only supported certificate-less ciphers.
+    assert(alg_a == SSL_aPSK);
+
+    if (CBS_len(&server_key_exchange) > 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_EXTRA_DATA_IN_MESSAGE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_read_certificate_request;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    hs->state = state_read_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type == SSL3_MT_SERVER_HELLO_DONE) {
+    // If we get here we don't need the handshake buffer as we won't be doing
+    // client auth.
+    hs->transcript.FreeBuffer();
+    hs->state = state_read_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_REQUEST) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Get the certificate types.
+  CBS body = msg.body, certificate_types;
+  if (!CBS_get_u8_length_prefixed(&body, &certificate_types)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!hs->certificate_types.CopyFrom(certificate_types)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    CBS supported_signature_algorithms;
+    if (!CBS_get_u16_length_prefixed(&body, &supported_signature_algorithms) ||
+        !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ca_names =
+      ssl_parse_client_CA_list(ssl, &alert, &body);
+  if (!ca_names) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->cert_request = true;
+  hs->ca_names = std::move(ca_names);
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(hs);
+
+  ssl->method->next_message(ssl);
+  hs->state = state_read_server_hello_done;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello_done(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO_DONE) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // ServerHelloDone is empty.
+  if (CBS_len(&msg.body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_send_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // The peer didn't request a certificate.
+  if (!hs->cert_request) {
+    hs->state = state_send_client_key_exchange;
+    return ssl_hs_ok;
+  }
+
+  // Call cert_cb to update the certificate.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      hs->state = state_send_client_certificate;
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_has_certificate(hs)) {
+    // Without a client certificate, the handshake buffer may be released.
+    hs->transcript.FreeBuffer();
+  }
+
+  if (!ssl_on_certificate_selected(hs) ||
+      !ssl_output_cert_chain(hs)) {
+    return ssl_hs_error;
+  }
+
+
+  hs->state = state_send_client_key_exchange;
+  return ssl_hs_ok;
+}
+
+static_assert(sizeof(size_t) >= sizeof(unsigned),
+              "size_t is smaller than unsigned");
+
+static enum ssl_hs_wait_t do_send_client_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CLIENT_KEY_EXCHANGE)) {
+    return ssl_hs_error;
+  }
+
+  Array<uint8_t> pms;
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    CRYPTO_BUFFER *leaf =
+        sk_CRYPTO_BUFFER_value(hs->new_session->certs.get(), 0);
+    CBS leaf_cbs;
+    CBS_init(&leaf_cbs, CRYPTO_BUFFER_data(leaf), CRYPTO_BUFFER_len(leaf));
+
+    // Check the key usage matches the cipher suite. We do this unconditionally
+    // for non-RSA certificates. In particular, it's needed to distinguish ECDH
+    // certificates, which we do not support, from ECDSA certificates.
+    // Historically, we have not checked RSA key usages, so it is controlled by
+    // a flag for now. See https://crbug.com/795089.
+    ssl_key_usage_t intended_use = (alg_k & SSL_kRSA)
+                                       ? key_usage_encipherment
+                                       : key_usage_digital_signature;
+    if (ssl->config->enforce_rsa_key_usage ||
+        EVP_PKEY_id(hs->peer_pubkey.get()) != EVP_PKEY_RSA) {
+      if (!ssl_cert_check_key_usage(&leaf_cbs, intended_use)) {
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  // If using a PSK key exchange, prepare the pre-shared key.
+  unsigned psk_len = 0;
+  uint8_t psk[PSK_MAX_PSK_LEN];
+  if (alg_a & SSL_aPSK) {
+    if (hs->config->psk_client_callback == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_NO_CLIENT_CB);
+      return ssl_hs_error;
+    }
+
+    char identity[PSK_MAX_IDENTITY_LEN + 1];
+    OPENSSL_memset(identity, 0, sizeof(identity));
+    psk_len = hs->config->psk_client_callback(
+        ssl, hs->peer_psk_identity_hint.get(), identity, sizeof(identity), psk,
+        sizeof(psk));
+    if (psk_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+    assert(psk_len <= PSK_MAX_PSK_LEN);
+
+    hs->new_session->psk_identity.reset(OPENSSL_strdup(identity));
+    if (hs->new_session->psk_identity == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // Write out psk_identity.
+    CBB child;
+    if (!CBB_add_u16_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, (const uint8_t *)identity,
+                       OPENSSL_strnlen(identity, sizeof(identity))) ||
+        !CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Depending on the key exchange method, compute |pms|.
+  if (alg_k & SSL_kRSA) {
+    if (!pms.Init(SSL_MAX_MASTER_KEY_LENGTH)) {
+      return ssl_hs_error;
+    }
+
+    RSA *rsa = EVP_PKEY_get0_RSA(hs->peer_pubkey.get());
+    if (rsa == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    pms[0] = hs->client_version >> 8;
+    pms[1] = hs->client_version & 0xff;
+    if (!RAND_bytes(&pms[2], SSL_MAX_MASTER_KEY_LENGTH - 2)) {
+      return ssl_hs_error;
+    }
+
+    CBB enc_pms;
+    uint8_t *ptr;
+    size_t enc_pms_len;
+    if (!CBB_add_u16_length_prefixed(&body, &enc_pms) ||
+        !CBB_reserve(&enc_pms, &ptr, RSA_size(rsa)) ||
+        !RSA_encrypt(rsa, &enc_pms_len, ptr, RSA_size(rsa), pms.data(),
+                     pms.size(), RSA_PKCS1_PADDING) ||
+        !CBB_did_write(&enc_pms, enc_pms_len) ||
+        !CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+  } else if (alg_k & SSL_kECDHE) {
+    // Generate a keypair and serialize the public half.
+    CBB child;
+    if (!CBB_add_u8_length_prefixed(&body, &child)) {
+      return ssl_hs_error;
+    }
+
+    // Compute the premaster.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!hs->key_shares[0]->Accept(&child, &pms, &alert, hs->peer_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+    if (!CBB_flush(&body)) {
+      return ssl_hs_error;
+    }
+
+    // The key exchange state may now be discarded.
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+    hs->peer_key.Reset();
+  } else if (alg_k & SSL_kPSK) {
+    // For plain PSK, other_secret is a block of 0s with the same length as
+    // the pre-shared key.
+    if (!pms.Init(psk_len)) {
+      return ssl_hs_error;
+    }
+    OPENSSL_memset(pms.data(), 0, pms.size());
+  } else {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // For a PSK cipher suite, other_secret is combined with the pre-shared
+  // key.
+  if (alg_a & SSL_aPSK) {
+    ScopedCBB pms_cbb;
+    CBB child;
+    if (!CBB_init(pms_cbb.get(), 2 + psk_len + 2 + pms.size()) ||
+        !CBB_add_u16_length_prefixed(pms_cbb.get(), &child) ||
+        !CBB_add_bytes(&child, pms.data(), pms.size()) ||
+        !CBB_add_u16_length_prefixed(pms_cbb.get(), &child) ||
+        !CBB_add_bytes(&child, psk, psk_len) ||
+        !CBBFinishArray(pms_cbb.get(), &pms)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+  }
+
+  // The message must be added to the finished hash before calculating the
+  // master secret.
+  if (!ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  hs->new_session->master_key_length =
+      tls1_generate_master_secret(hs, hs->new_session->master_key, pms);
+  if (hs->new_session->master_key_length == 0) {
+    return ssl_hs_error;
+  }
+  hs->new_session->extended_master_secret = hs->extended_master_secret;
+
+  hs->state = state_send_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->cert_request || !ssl_has_certificate(hs)) {
+    hs->state = state_send_client_finished;
+    return ssl_hs_ok;
+  }
+
+  assert(ssl_has_private_key(hs));
+  ScopedCBB cbb;
+  CBB body, child;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CERTIFICATE_VERIFY)) {
+    return ssl_hs_error;
+  }
+
+  uint16_t signature_algorithm;
+  if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    // Write out the digest type in TLS 1.2.
+    if (!CBB_add_u16(&body, signature_algorithm)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  // Set aside space for the signature.
+  const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+  uint8_t *ptr;
+  if (!CBB_add_u16_length_prefixed(&body, &child) ||
+      !CBB_reserve(&child, &ptr, max_sig_len)) {
+    return ssl_hs_error;
+  }
+
+  size_t sig_len = max_sig_len;
+  switch (ssl_private_key_sign(hs, ptr, &sig_len, max_sig_len,
+                               signature_algorithm,
+                               hs->transcript.buffer())) {
+    case ssl_private_key_success:
+      break;
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+    case ssl_private_key_retry:
+      hs->state = state_send_client_certificate_verify;
+      return ssl_hs_private_key_operation;
+  }
+
+  if (!CBB_did_write(&child, sig_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  // The handshake buffer is no longer necessary.
+  hs->transcript.FreeBuffer();
+
+  hs->state = state_send_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // Resolve Channel ID first, before any non-idempotent operations.
+  if (ssl->s3->channel_id_valid) {
+    if (!ssl_do_channel_id_callback(hs)) {
+      return ssl_hs_error;
+    }
+
+    if (hs->config->channel_id_private == NULL) {
+      hs->state = state_send_client_finished;
+      return ssl_hs_channel_id_lookup;
+    }
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl) ||
+      !tls1_change_cipher_state(hs, evp_aead_seal)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->next_proto_neg_seen) {
+    static const uint8_t kZero[32] = {0};
+    size_t padding_len =
+        32 - ((ssl->s3->next_proto_negotiated.size() + 2) % 32);
+
+    ScopedCBB cbb;
+    CBB body, child;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_NEXT_PROTO) ||
+        !CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, ssl->s3->next_proto_negotiated.data(),
+                       ssl->s3->next_proto_negotiated.size()) ||
+        !CBB_add_u8_length_prefixed(&body, &child) ||
+        !CBB_add_bytes(&child, kZero, padding_len) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (ssl->s3->channel_id_valid) {
+    ScopedCBB cbb;
+    CBB body;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CHANNEL_ID) ||
+        !tls1_write_channel_id(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_send_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_finish_flight;
+  return ssl_hs_flush;
+}
+
+static bool can_false_start(const SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // False Start bypasses the Finished check's downgrade protection. This can
+  // enable attacks where we send data under weaker settings than supported
+  // (e.g. the Logjam attack). Thus we require TLS 1.2 with an ECDHE+AEAD
+  // cipher, our strongest settings before TLS 1.3.
+  //
+  // Now that TLS 1.3 exists, we would like to avoid similar attacks between
+  // TLS 1.2 and TLS 1.3, but there are too many TLS 1.2 deployments to
+  // sacrifice False Start on them. TLS 1.3's downgrade signal fixes this, but
+  // |SSL_CTX_set_ignore_tls13_downgrade| can disable it due to compatibility
+  // issues.
+  //
+  // |SSL_CTX_set_ignore_tls13_downgrade| normally still retains Finished-based
+  // downgrade protection, but False Start bypasses that. Thus, we disable False
+  // Start based on the TLS 1.3 downgrade signal, even if otherwise unenforced.
+  if (SSL_is_dtls(ssl) ||
+      SSL_version(ssl) != TLS1_2_VERSION ||
+      hs->new_cipher->algorithm_mkey != SSL_kECDHE ||
+      hs->new_cipher->algorithm_mac != SSL_AEAD ||
+      ssl->s3->tls13_downgrade) {
+    return false;
+  }
+
+  // Additionally require ALPN or NPN by default.
+  //
+  // TODO(davidben): Can this constraint be relaxed globally now that cipher
+  // suite requirements have been tightened?
+  if (!ssl->ctx->false_start_allowed_without_alpn &&
+      ssl->s3->alpn_selected.empty() &&
+      ssl->s3->next_proto_negotiated.empty()) {
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_hs_wait_t do_finish_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->session != NULL) {
+    hs->state = state_finish_client_handshake;
+    return ssl_hs_ok;
+  }
+
+  // This is a full handshake. If it involves ChannelID, then record the
+  // handshake hashes at this point in the session so that any resumption of
+  // this session with ChannelID can sign those hashes.
+  if (!tls1_record_handshake_hashes_for_channel_id(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_session_ticket;
+
+  if ((SSL_get_mode(ssl) & SSL_MODE_ENABLE_FALSE_START) &&
+      can_false_start(hs) &&
+      // No False Start on renegotiation (would complicate the state machine).
+      !ssl->s3->initial_handshake_complete) {
+    hs->in_false_start = true;
+    hs->can_early_write = true;
+    return ssl_hs_early_return;
+  }
+
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_session_ticket(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->ticket_expected) {
+    hs->state = state_process_change_cipher_spec;
+    return ssl_hs_read_change_cipher_spec;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_NEW_SESSION_TICKET) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS new_session_ticket = msg.body, ticket;
+  uint32_t ticket_lifetime_hint;
+  if (!CBS_get_u32(&new_session_ticket, &ticket_lifetime_hint) ||
+      !CBS_get_u16_length_prefixed(&new_session_ticket, &ticket) ||
+      CBS_len(&new_session_ticket) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&ticket) == 0) {
+    // RFC 5077 allows a server to change its mind and send no ticket after
+    // negotiating the extension. The value of |ticket_expected| is checked in
+    // |ssl_update_cache| so is cleared here to avoid an unnecessary update.
+    hs->ticket_expected = false;
+    ssl->method->next_message(ssl);
+    hs->state = state_process_change_cipher_spec;
+    return ssl_hs_read_change_cipher_spec;
+  }
+
+  SSL_SESSION *session = hs->new_session.get();
+  UniquePtr<SSL_SESSION> renewed_session;
+  if (ssl->session != NULL) {
+    // The server is sending a new ticket for an existing session. Sessions are
+    // immutable once established, so duplicate all but the ticket of the
+    // existing session.
+    renewed_session =
+        SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+    if (!renewed_session) {
+      // This should never happen.
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    session = renewed_session.get();
+  }
+
+  // |ticket_lifetime_hint| is measured from when the ticket was issued.
+  ssl_session_rebase_time(ssl, session);
+
+  if (!session->ticket.CopyFrom(ticket)) {
+    return ssl_hs_error;
+  }
+  session->ticket_lifetime_hint = ticket_lifetime_hint;
+
+  // Generate a session ID for this session. Some callers expect all sessions to
+  // have a session ID. Additionally, it acts as the session ID to signal
+  // resumption.
+  SHA256(CBS_data(&ticket), CBS_len(&ticket), session->session_id);
+  session->session_id_length = SHA256_DIGEST_LENGTH;
+
+  if (renewed_session) {
+    session->not_resumable = false;
+    ssl->session = std::move(renewed_session);
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state_process_change_cipher_spec;
+  return ssl_hs_read_change_cipher_spec;
+}
+
+static enum ssl_hs_wait_t do_process_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (!tls1_change_cipher_state(hs, evp_aead_open)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  enum ssl_hs_wait_t wait = ssl_get_finished(hs);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state_send_client_finished;
+    return ssl_hs_ok;
+  }
+
+  hs->state = state_finish_client_handshake;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_finish_client_handshake(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ssl->method->on_handshake_complete(ssl);
+
+  if (ssl->session != NULL) {
+    ssl->s3->established_session = UpRef(ssl->session);
+  } else {
+    // We make a copy of the session in order to maintain the immutability
+    // of the new established_session due to False Start. The caller may
+    // have taken a reference to the temporary session.
+    ssl->s3->established_session =
+        SSL_SESSION_dup(hs->new_session.get(), SSL_SESSION_DUP_ALL);
+    if (!ssl->s3->established_session) {
+      return ssl_hs_error;
+    }
+    // Renegotiations do not participate in session resumption.
+    if (!ssl->s3->initial_handshake_complete) {
+      ssl->s3->established_session->not_resumable = false;
+    }
+
+    hs->new_session.reset();
+  }
+
+  hs->handshake_finalized = true;
+  ssl->s3->initial_handshake_complete = true;
+  ssl_update_cache(hs, SSL_SESS_CACHE_CLIENT);
+
+  hs->state = state_done;
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_client_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->state != state_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum ssl_client_hs_state_t state =
+        static_cast<enum ssl_client_hs_state_t>(hs->state);
+    switch (state) {
+      case state_start_connect:
+        ret = do_start_connect(hs);
+        break;
+      case state_enter_early_data:
+        ret = do_enter_early_data(hs);
+        break;
+      case state_early_reverify_server_certificate:
+        ret = do_early_reverify_server_certificate(hs);
+        break;
+      case state_read_hello_verify_request:
+        ret = do_read_hello_verify_request(hs);
+        break;
+      case state_read_server_hello:
+        ret = do_read_server_hello(hs);
+        break;
+      case state_tls13:
+        ret = do_tls13(hs);
+        break;
+      case state_read_server_certificate:
+        ret = do_read_server_certificate(hs);
+        break;
+      case state_read_certificate_status:
+        ret = do_read_certificate_status(hs);
+        break;
+      case state_verify_server_certificate:
+        ret = do_verify_server_certificate(hs);
+        break;
+      case state_reverify_server_certificate:
+        ret = do_reverify_server_certificate(hs);
+        break;
+      case state_read_server_key_exchange:
+        ret = do_read_server_key_exchange(hs);
+        break;
+      case state_read_certificate_request:
+        ret = do_read_certificate_request(hs);
+        break;
+      case state_read_server_hello_done:
+        ret = do_read_server_hello_done(hs);
+        break;
+      case state_send_client_certificate:
+        ret = do_send_client_certificate(hs);
+        break;
+      case state_send_client_key_exchange:
+        ret = do_send_client_key_exchange(hs);
+        break;
+      case state_send_client_certificate_verify:
+        ret = do_send_client_certificate_verify(hs);
+        break;
+      case state_send_client_finished:
+        ret = do_send_client_finished(hs);
+        break;
+      case state_finish_flight:
+        ret = do_finish_flight(hs);
+        break;
+      case state_read_session_ticket:
+        ret = do_read_session_ticket(hs);
+        break;
+      case state_process_change_cipher_spec:
+        ret = do_process_change_cipher_spec(hs);
+        break;
+      case state_read_server_finished:
+        ret = do_read_server_finished(hs);
+        break;
+      case state_finish_client_handshake:
+        ret = do_finish_client_handshake(hs);
+        break;
+      case state_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_CONNECT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_DONE, 1);
+  return ssl_hs_ok;
+}
+
+const char *ssl_client_handshake_state(SSL_HANDSHAKE *hs) {
+  enum ssl_client_hs_state_t state =
+      static_cast<enum ssl_client_hs_state_t>(hs->state);
+  switch (state) {
+    case state_start_connect:
+      return "TLS client start_connect";
+    case state_enter_early_data:
+      return "TLS client enter_early_data";
+    case state_early_reverify_server_certificate:
+      return "TLS client early_reverify_server_certificate";
+    case state_read_hello_verify_request:
+      return "TLS client read_hello_verify_request";
+    case state_read_server_hello:
+      return "TLS client read_server_hello";
+    case state_tls13:
+      return tls13_client_handshake_state(hs);
+    case state_read_server_certificate:
+      return "TLS client read_server_certificate";
+    case state_read_certificate_status:
+      return "TLS client read_certificate_status";
+    case state_verify_server_certificate:
+      return "TLS client verify_server_certificate";
+    case state_reverify_server_certificate:
+      return "TLS client reverify_server_certificate";
+    case state_read_server_key_exchange:
+      return "TLS client read_server_key_exchange";
+    case state_read_certificate_request:
+      return "TLS client read_certificate_request";
+    case state_read_server_hello_done:
+      return "TLS client read_server_hello_done";
+    case state_send_client_certificate:
+      return "TLS client send_client_certificate";
+    case state_send_client_key_exchange:
+      return "TLS client send_client_key_exchange";
+    case state_send_client_certificate_verify:
+      return "TLS client send_client_certificate_verify";
+    case state_send_client_finished:
+      return "TLS client send_client_finished";
+    case state_finish_flight:
+      return "TLS client finish_flight";
+    case state_read_session_ticket:
+      return "TLS client read_session_ticket";
+    case state_process_change_cipher_spec:
+      return "TLS client process_change_cipher_spec";
+    case state_read_server_finished:
+      return "TLS client read_server_finished";
+    case state_finish_client_handshake:
+      return "TLS client finish_client_handshake";
+    case state_done:
+      return "TLS client done";
+  }
+
+  return "TLS client unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc
new file mode 100644
index 0000000..a1ae311
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc	
@@ -0,0 +1,1797 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/cipher.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ecdsa.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/x509.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_client_cipher_list_contains_cipher(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t id) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t got_id;
+    if (!CBS_get_u16(&cipher_suites, &got_id)) {
+      return false;
+    }
+
+    if (got_id == id) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+static bool negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                              const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  assert(!ssl->s3->have_version);
+  CBS supported_versions, versions;
+  if (ssl_client_hello_get_extension(client_hello, &supported_versions,
+                                     TLSEXT_TYPE_supported_versions)) {
+    if (!CBS_get_u8_length_prefixed(&supported_versions, &versions) ||
+        CBS_len(&supported_versions) != 0 ||
+        CBS_len(&versions) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+  } else {
+    // Convert the ClientHello version to an equivalent supported_versions
+    // extension.
+    static const uint8_t kTLSVersions[] = {
+        0x03, 0x03,  // TLS 1.2
+        0x03, 0x02,  // TLS 1.1
+        0x03, 0x01,  // TLS 1
+    };
+
+    static const uint8_t kDTLSVersions[] = {
+        0xfe, 0xfd,  // DTLS 1.2
+        0xfe, 0xff,  // DTLS 1.0
+    };
+
+    size_t versions_len = 0;
+    if (SSL_is_dtls(ssl)) {
+      if (client_hello->version <= DTLS1_2_VERSION) {
+        versions_len = 4;
+      } else if (client_hello->version <= DTLS1_VERSION) {
+        versions_len = 2;
+      }
+      CBS_init(&versions, kDTLSVersions + sizeof(kDTLSVersions) - versions_len,
+               versions_len);
+    } else {
+      if (client_hello->version >= TLS1_2_VERSION) {
+        versions_len = 6;
+      } else if (client_hello->version >= TLS1_1_VERSION) {
+        versions_len = 4;
+      } else if (client_hello->version >= TLS1_VERSION) {
+        versions_len = 2;
+      }
+      CBS_init(&versions, kTLSVersions + sizeof(kTLSVersions) - versions_len,
+               versions_len);
+    }
+  }
+
+  if (!ssl_negotiate_version(hs, out_alert, &ssl->version, &versions)) {
+    return false;
+  }
+
+  // At this point, the connection's version is known and |ssl->version| is
+  // fixed. Begin enforcing the record-layer version.
+  ssl->s3->have_version = true;
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+
+  // Handle FALLBACK_SCSV.
+  if (ssl_client_cipher_list_contains_cipher(client_hello,
+                                             SSL3_CK_FALLBACK_SCSV & 0xffff) &&
+      ssl_protocol_version(ssl) < hs->max_version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INAPPROPRIATE_FALLBACK);
+    *out_alert = SSL3_AD_INAPPROPRIATE_FALLBACK;
+    return false;
+  }
+
+  return true;
+}
+
+static UniquePtr<STACK_OF(SSL_CIPHER)> ssl_parse_client_cipher_list(
+    const SSL_CLIENT_HELLO *client_hello) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> sk(sk_SSL_CIPHER_new_null());
+  if (!sk) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t cipher_suite;
+
+    if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
+      return nullptr;
+    }
+
+    const SSL_CIPHER *c = SSL_get_cipher_by_value(cipher_suite);
+    if (c != NULL && !sk_SSL_CIPHER_push(sk.get(), c)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+  }
+
+  return sk;
+}
+
+// ssl_get_compatible_server_ciphers determines the key exchange and
+// authentication cipher suite masks compatible with the server configuration
+// and current ClientHello parameters of |hs|. It sets |*out_mask_k| to the key
+// exchange mask and |*out_mask_a| to the authentication mask.
+static void ssl_get_compatible_server_ciphers(SSL_HANDSHAKE *hs,
+                                              uint32_t *out_mask_k,
+                                              uint32_t *out_mask_a) {
+  uint32_t mask_k = 0;
+  uint32_t mask_a = 0;
+
+  if (ssl_has_certificate(hs)) {
+    mask_a |= ssl_cipher_auth_mask_for_key(hs->local_pubkey.get());
+    if (EVP_PKEY_id(hs->local_pubkey.get()) == EVP_PKEY_RSA) {
+      mask_k |= SSL_kRSA;
+    }
+  }
+
+  // Check for a shared group to consider ECDHE ciphers.
+  uint16_t unused;
+  if (tls1_get_shared_group(hs, &unused)) {
+    mask_k |= SSL_kECDHE;
+  }
+
+  // PSK requires a server callback.
+  if (hs->config->psk_server_callback != NULL) {
+    mask_k |= SSL_kPSK;
+    mask_a |= SSL_aPSK;
+  }
+
+  *out_mask_k = mask_k;
+  *out_mask_a = mask_a;
+}
+
+static const SSL_CIPHER *ssl3_choose_cipher(
+    SSL_HANDSHAKE *hs, const SSL_CLIENT_HELLO *client_hello,
+    const SSLCipherPreferenceList *server_pref) {
+  SSL *const ssl = hs->ssl;
+  const STACK_OF(SSL_CIPHER) *prio, *allow;
+  // in_group_flags will either be NULL, or will point to an array of bytes
+  // which indicate equal-preference groups in the |prio| stack. See the
+  // comment about |in_group_flags| in the |SSLCipherPreferenceList|
+  // struct.
+  const bool *in_group_flags;
+  // group_min contains the minimal index so far found in a group, or -1 if no
+  // such value exists yet.
+  int group_min = -1;
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> client_pref =
+      ssl_parse_client_cipher_list(client_hello);
+  if (!client_pref) {
+    return nullptr;
+  }
+
+  if (ssl->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
+    prio = server_pref->ciphers.get();
+    in_group_flags = server_pref->in_group_flags;
+    allow = client_pref.get();
+  } else {
+    prio = client_pref.get();
+    in_group_flags = NULL;
+    allow = server_pref->ciphers.get();
+  }
+
+  uint32_t mask_k, mask_a;
+  ssl_get_compatible_server_ciphers(hs, &mask_k, &mask_a);
+
+  for (size_t i = 0; i < sk_SSL_CIPHER_num(prio); i++) {
+    const SSL_CIPHER *c = sk_SSL_CIPHER_value(prio, i);
+
+    size_t cipher_index;
+    if (// Check if the cipher is supported for the current version.
+        SSL_CIPHER_get_min_version(c) <= ssl_protocol_version(ssl) &&
+        ssl_protocol_version(ssl) <= SSL_CIPHER_get_max_version(c) &&
+        // Check the cipher is supported for the server configuration.
+        (c->algorithm_mkey & mask_k) &&
+        (c->algorithm_auth & mask_a) &&
+        // Check the cipher is in the |allow| list.
+        sk_SSL_CIPHER_find(allow, &cipher_index, c)) {
+      if (in_group_flags != NULL && in_group_flags[i]) {
+        // This element of |prio| is in a group. Update the minimum index found
+        // so far and continue looking.
+        if (group_min == -1 || (size_t)group_min > cipher_index) {
+          group_min = cipher_index;
+        }
+      } else {
+        if (group_min != -1 && (size_t)group_min < cipher_index) {
+          cipher_index = group_min;
+        }
+        return sk_SSL_CIPHER_value(allow, cipher_index);
+      }
+    }
+
+    if (in_group_flags != NULL && !in_group_flags[i] && group_min != -1) {
+      // We are about to leave a group, but we found a match in it, so that's
+      // our answer.
+      return sk_SSL_CIPHER_value(allow, group_min);
+    }
+  }
+
+  return nullptr;
+}
+
+static enum ssl_hs_wait_t do_start_accept(SSL_HANDSHAKE *hs) {
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_START, 1);
+  hs->state = state12_read_client_hello;
+  return ssl_hs_ok;
+}
+
+// is_probably_jdk11_with_tls13 returns whether |client_hello| was probably sent
+// from a JDK 11 client with both TLS 1.3 and a prior version enabled.
+static bool is_probably_jdk11_with_tls13(const SSL_CLIENT_HELLO *client_hello) {
+  // JDK 11 ClientHellos contain a number of unusual properties which should
+  // limit false positives.
+
+  // JDK 11 does not support ChaCha20-Poly1305. This is unusual: many modern
+  // clients implement ChaCha20-Poly1305.
+  if (ssl_client_cipher_list_contains_cipher(
+          client_hello, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+    return false;
+  }
+
+  // JDK 11 always sends extensions in a particular order.
+  constexpr uint16_t kMaxFragmentLength = 0x0001;
+  constexpr uint16_t kStatusRequestV2 = 0x0011;
+  static CONSTEXPR_ARRAY struct {
+    uint16_t id;
+    bool required;
+  } kJavaExtensions[] = {
+      {TLSEXT_TYPE_server_name, false},
+      {kMaxFragmentLength, false},
+      {TLSEXT_TYPE_status_request, false},
+      {TLSEXT_TYPE_supported_groups, true},
+      {TLSEXT_TYPE_ec_point_formats, false},
+      {TLSEXT_TYPE_signature_algorithms, true},
+      // Java always sends signature_algorithms_cert.
+      {TLSEXT_TYPE_signature_algorithms_cert, true},
+      {TLSEXT_TYPE_application_layer_protocol_negotiation, false},
+      {kStatusRequestV2, false},
+      {TLSEXT_TYPE_extended_master_secret, false},
+      {TLSEXT_TYPE_supported_versions, true},
+      {TLSEXT_TYPE_cookie, false},
+      {TLSEXT_TYPE_psk_key_exchange_modes, true},
+      {TLSEXT_TYPE_key_share, true},
+      {TLSEXT_TYPE_renegotiate, false},
+      {TLSEXT_TYPE_pre_shared_key, false},
+  };
+  Span<const uint8_t> sigalgs, sigalgs_cert;
+  bool has_status_request = false, has_status_request_v2 = false;
+  CBS extensions, supported_groups;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  for (const auto &java_extension : kJavaExtensions) {
+    CBS copy = extensions;
+    uint16_t id;
+    if (CBS_get_u16(&copy, &id) && id == java_extension.id) {
+      // The next extension is the one we expected.
+      extensions = copy;
+      CBS body;
+      if (!CBS_get_u16_length_prefixed(&extensions, &body)) {
+        return false;
+      }
+      switch (id) {
+        case TLSEXT_TYPE_status_request:
+          has_status_request = true;
+          break;
+        case kStatusRequestV2:
+          has_status_request_v2 = true;
+          break;
+        case TLSEXT_TYPE_signature_algorithms:
+          sigalgs = body;
+          break;
+        case TLSEXT_TYPE_signature_algorithms_cert:
+          sigalgs_cert = body;
+          break;
+        case TLSEXT_TYPE_supported_groups:
+          supported_groups = body;
+          break;
+      }
+    } else if (java_extension.required) {
+      return false;
+    }
+  }
+  if (CBS_len(&extensions) != 0) {
+    return false;
+  }
+
+  // JDK 11 never advertises X25519. It is not offered by default, and
+  // -Djdk.tls.namedGroups=x25519 does not work. This is unusual: many modern
+  // clients implement X25519.
+  while (CBS_len(&supported_groups) > 0) {
+    uint16_t group;
+    if (!CBS_get_u16(&supported_groups, &group) ||
+        group == SSL_CURVE_X25519) {
+      return false;
+    }
+  }
+
+  if (// JDK 11 always sends the same contents in signature_algorithms and
+      // signature_algorithms_cert. This is unusual: signature_algorithms_cert,
+      // if omitted, is treated as if it were signature_algorithms.
+      sigalgs != sigalgs_cert ||
+      // When TLS 1.2 or below is enabled, JDK 11 sends status_request_v2 iff it
+      // sends status_request. This is unusual: status_request_v2 is not widely
+      // implemented.
+      has_status_request != has_status_request_v2) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool extract_sni(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  CBS sni;
+  if (!ssl_client_hello_get_extension(client_hello, &sni,
+                                      TLSEXT_TYPE_server_name)) {
+    // No SNI extension to parse.
+    return true;
+  }
+
+  CBS server_name_list, host_name;
+  uint8_t name_type;
+  if (!CBS_get_u16_length_prefixed(&sni, &server_name_list) ||
+      !CBS_get_u8(&server_name_list, &name_type) ||
+      // Although the server_name extension was intended to be extensible to
+      // new name types and multiple names, OpenSSL 1.0.x had a bug which meant
+      // different name types will cause an error. Further, RFC 4366 originally
+      // defined syntax inextensibly. RFC 6066 corrected this mistake, but
+      // adding new name types is no longer feasible.
+      //
+      // Act as if the extensibility does not exist to simplify parsing.
+      !CBS_get_u16_length_prefixed(&server_name_list, &host_name) ||
+      CBS_len(&server_name_list) != 0 ||
+      CBS_len(&sni) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  if (name_type != TLSEXT_NAMETYPE_host_name ||
+      CBS_len(&host_name) == 0 ||
+      CBS_len(&host_name) > TLSEXT_MAXLEN_host_name ||
+      CBS_contains_zero_byte(&host_name)) {
+    *out_alert = SSL_AD_UNRECOGNIZED_NAME;
+    return false;
+  }
+
+  // Copy the hostname as a string.
+  char *raw = nullptr;
+  if (!CBS_strdup(&host_name, &raw)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+  ssl->s3->hostname.reset(raw);
+
+  hs->should_ack_sni = true;
+  return true;
+}
+
+static enum ssl_hs_wait_t do_read_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (hs->config->handoff) {
+    return ssl_hs_handoff;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!extract_sni(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Run the early callback.
+  if (ssl->ctx->select_certificate_cb != NULL) {
+    switch (ssl->ctx->select_certificate_cb(&client_hello)) {
+      case ssl_select_cert_retry:
+        return ssl_hs_certificate_selection_pending;
+
+      case ssl_select_cert_error:
+        // Connection rejected.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+        return ssl_hs_error;
+
+      default:
+        /* fallthrough */;
+    }
+  }
+
+  // Freeze the version range after the early callback.
+  if (!ssl_get_version_range(hs, &hs->min_version, &hs->max_version)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->config->jdk11_workaround &&
+      is_probably_jdk11_with_tls13(&client_hello)) {
+    hs->apply_jdk11_workaround = true;
+  }
+
+  if (!negotiate_version(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  hs->client_version = client_hello.version;
+  if (client_hello.random_len != SSL3_RANDOM_SIZE) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+  OPENSSL_memcpy(ssl->s3->client_random, client_hello.random,
+                 client_hello.random_len);
+
+  // Only null compression is supported. TLS 1.3 further requires the peer
+  // advertise no other compression.
+  if (OPENSSL_memchr(client_hello.compression_methods, 0,
+                     client_hello.compression_methods_len) == NULL ||
+      (ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+       client_hello.compression_methods_len != 1)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMPRESSION_LIST);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // TLS extensions.
+  if (!ssl_parse_clienthello_tlsext(hs, &client_hello)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_select_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_select_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // Call |cert_cb| to update server certificates if required.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_on_certificate_selected(hs)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->ocsp_stapling_requested &&
+      ssl->ctx->legacy_ocsp_callback != nullptr) {
+    switch (ssl->ctx->legacy_ocsp_callback(
+        ssl, ssl->ctx->legacy_ocsp_callback_arg)) {
+      case SSL_TLSEXT_ERR_OK:
+        break;
+      case SSL_TLSEXT_ERR_NOACK:
+        hs->ocsp_stapling_requested = false;
+        break;
+      default:
+        OPENSSL_PUT_ERROR(SSL, SSL_R_OCSP_CB_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+    }
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    // Jump to the TLS 1.3 state machine.
+    hs->state = state12_tls13;
+    return ssl_hs_ok;
+  }
+
+  ssl->s3->early_data_reason = ssl_early_data_protocol_version;
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Negotiate the cipher suite. This must be done after |cert_cb| so the
+  // certificate is finalized.
+  SSLCipherPreferenceList *prefs = hs->config->cipher_list
+                                       ? hs->config->cipher_list.get()
+                                       : ssl->ctx->cipher_list.get();
+  hs->new_cipher = ssl3_choose_cipher(hs, &client_hello, prefs);
+  if (hs->new_cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_CIPHER);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_select_parameters;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_tls13(SSL_HANDSHAKE *hs) {
+  enum ssl_hs_wait_t wait = tls13_server_handshake(hs);
+  if (wait == ssl_hs_ok) {
+    hs->state = state12_finish_server_handshake;
+    return ssl_hs_ok;
+  }
+
+  return wait;
+}
+
+static enum ssl_hs_wait_t do_select_parameters(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Determine whether we are doing session resumption.
+  UniquePtr<SSL_SESSION> session;
+  bool tickets_supported = false, renew_ticket = false;
+  enum ssl_hs_wait_t wait = ssl_get_prev_session(
+      hs, &session, &tickets_supported, &renew_ticket, &client_hello);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (session) {
+    if (session->extended_master_secret && !hs->extended_master_secret) {
+      // A ClientHello without EMS that attempts to resume a session with EMS
+      // is fatal to the connection.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_session_is_resumable(hs, session.get()) ||
+        // If the client offers the EMS extension, but the previous session
+        // didn't use it, then negotiate a new session.
+        hs->extended_master_secret != session->extended_master_secret) {
+      session.reset();
+    }
+  }
+
+  if (session) {
+    // Use the old session.
+    hs->ticket_expected = renew_ticket;
+    ssl->session = std::move(session);
+    ssl->s3->session_reused = true;
+  } else {
+    hs->ticket_expected = tickets_supported;
+    ssl_set_session(ssl, NULL);
+    if (!ssl_get_new_session(hs, 1 /* server */)) {
+      return ssl_hs_error;
+    }
+
+    // Clear the session ID if we want the session to be single-use.
+    if (!(ssl->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)) {
+      hs->new_session->session_id_length = 0;
+    }
+  }
+
+  if (ssl->ctx->dos_protection_cb != NULL &&
+      ssl->ctx->dos_protection_cb(&client_hello) == 0) {
+    // Connection rejected for DOS reasons.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session == NULL) {
+    hs->new_session->cipher = hs->new_cipher;
+
+    // Determine whether to request a client certificate.
+    hs->cert_request = !!(hs->config->verify_mode & SSL_VERIFY_PEER);
+    // Only request a certificate if Channel ID isn't negotiated.
+    if ((hs->config->verify_mode & SSL_VERIFY_PEER_IF_NO_OBC) &&
+        ssl->s3->channel_id_valid) {
+      hs->cert_request = false;
+    }
+    // CertificateRequest may only be sent in certificate-based ciphers.
+    if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+      hs->cert_request = false;
+    }
+
+    if (!hs->cert_request) {
+      // OpenSSL returns X509_V_OK when no certificates are requested. This is
+      // classed by them as a bug, but it's assumed by at least NGINX.
+      hs->new_session->verify_result = X509_V_OK;
+    }
+  }
+
+  // HTTP/2 negotiation depends on the cipher suite, so ALPN negotiation was
+  // deferred. Complete it now.
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_negotiate_alpn(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Now that all parameters are known, initialize the handshake hash and hash
+  // the ClientHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !ssl_hash_message(hs, msg)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Handback includes the whole handshake transcript, so we cannot free the
+  // transcript buffer in the handback case.
+  if (!hs->cert_request && !hs->handback) {
+    hs->transcript.FreeBuffer();
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state12_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static void copy_suffix(Span<uint8_t> out, Span<const uint8_t> in) {
+  out = out.subspan(out.size() - in.size());
+  assert(out.size() == in.size());
+  OPENSSL_memcpy(out.data(), in.data(), in.size());
+}
+
+static enum ssl_hs_wait_t do_send_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // We only accept ChannelIDs on connections with ECDHE in order to avoid a
+  // known attack while we fix ChannelID itself.
+  if (ssl->s3->channel_id_valid &&
+      (hs->new_cipher->algorithm_mkey & SSL_kECDHE) == 0) {
+    ssl->s3->channel_id_valid = false;
+  }
+
+  // If this is a resumption and the original handshake didn't support
+  // ChannelID then we didn't record the original handshake hashes in the
+  // session and so cannot resume with ChannelIDs.
+  if (ssl->session != NULL &&
+      ssl->session->original_handshake_hash_len == 0) {
+    ssl->s3->channel_id_valid = false;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  ssl->s3->server_random[0] = now.tv_sec >> 24;
+  ssl->s3->server_random[1] = now.tv_sec >> 16;
+  ssl->s3->server_random[2] = now.tv_sec >> 8;
+  ssl->s3->server_random[3] = now.tv_sec;
+  if (!RAND_bytes(ssl->s3->server_random + 4, SSL3_RANDOM_SIZE - 4)) {
+    return ssl_hs_error;
+  }
+
+  // Implement the TLS 1.3 anti-downgrade feature.
+  if (ssl_supports_version(hs, TLS1_3_VERSION)) {
+    if (ssl_protocol_version(ssl) == TLS1_2_VERSION) {
+      if (hs->apply_jdk11_workaround) {
+        // JDK 11 implements the TLS 1.3 downgrade signal, so we cannot send it
+        // here. However, the signal is only effective if all TLS 1.2
+        // ServerHellos produced by the server are marked. Thus we send a
+        // different non-standard signal for the time being, until JDK 11.0.2 is
+        // released and clients have updated.
+        copy_suffix(ssl->s3->server_random, kJDK11DowngradeRandom);
+      } else {
+        copy_suffix(ssl->s3->server_random, kTLS13DowngradeRandom);
+      }
+    } else {
+      copy_suffix(ssl->s3->server_random, kTLS12DowngradeRandom);
+    }
+  }
+
+  const SSL_SESSION *session = hs->new_session.get();
+  if (ssl->session != nullptr) {
+    session = ssl->session.get();
+  }
+
+  ScopedCBB cbb;
+  CBB body, session_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, ssl->version) ||
+      !CBB_add_bytes(&body, ssl->s3->server_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, session->session_id,
+                     session->session_id_length) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0 /* no compression */) ||
+      !ssl_add_serverhello_tlsext(hs, &body) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_send_server_finished;
+  } else {
+    hs->state = state12_send_server_certificate;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    if (!ssl_has_certificate(hs)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_SET);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_output_cert_chain(hs)) {
+      return ssl_hs_error;
+    }
+
+    if (hs->certificate_status_expected) {
+      CBB body, ocsp_response;
+      if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                     SSL3_MT_CERTIFICATE_STATUS) ||
+          !CBB_add_u8(&body, TLSEXT_STATUSTYPE_ocsp) ||
+          !CBB_add_u24_length_prefixed(&body, &ocsp_response) ||
+          !CBB_add_bytes(
+              &ocsp_response,
+              CRYPTO_BUFFER_data(hs->config->cert->ocsp_response.get()),
+              CRYPTO_BUFFER_len(hs->config->cert->ocsp_response.get())) ||
+          !ssl_add_message_cbb(ssl, cbb.get())) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  // Assemble ServerKeyExchange parameters if needed.
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  if (ssl_cipher_requires_server_key_exchange(hs->new_cipher) ||
+      ((alg_a & SSL_aPSK) && hs->config->psk_identity_hint)) {
+    // Pre-allocate enough room to comfortably fit an ECDHE public key. Prepend
+    // the client and server randoms for the signing transcript.
+    CBB child;
+    if (!CBB_init(cbb.get(), SSL3_RANDOM_SIZE * 2 + 128) ||
+        !CBB_add_bytes(cbb.get(), ssl->s3->client_random, SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(cbb.get(), ssl->s3->server_random, SSL3_RANDOM_SIZE)) {
+      return ssl_hs_error;
+    }
+
+    // PSK ciphers begin with an identity hint.
+    if (alg_a & SSL_aPSK) {
+      size_t len = hs->config->psk_identity_hint == nullptr
+                       ? 0
+                       : strlen(hs->config->psk_identity_hint.get());
+      if (!CBB_add_u16_length_prefixed(cbb.get(), &child) ||
+          !CBB_add_bytes(&child,
+                         (const uint8_t *)hs->config->psk_identity_hint.get(),
+                         len)) {
+        return ssl_hs_error;
+      }
+    }
+
+    if (alg_k & SSL_kECDHE) {
+      // Determine the group to use.
+      uint16_t group_id;
+      if (!tls1_get_shared_group(hs, &group_id)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+        return ssl_hs_error;
+       }
+      hs->new_session->group_id = group_id;
+
+      // Set up ECDH, generate a key, and emit the public half.
+      hs->key_shares[0] = SSLKeyShare::Create(group_id);
+      if (!hs->key_shares[0] ||
+          !CBB_add_u8(cbb.get(), NAMED_CURVE_TYPE) ||
+          !CBB_add_u16(cbb.get(), group_id) ||
+          !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+          !hs->key_shares[0]->Offer(&child)) {
+        return ssl_hs_error;
+      }
+    } else {
+      assert(alg_k & SSL_kPSK);
+    }
+
+    if (!CBBFinishArray(cbb.get(), &hs->server_params)) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->state = state12_send_server_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->server_params.size() == 0) {
+    hs->state = state12_send_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  ScopedCBB cbb;
+  CBB body, child;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_SERVER_KEY_EXCHANGE) ||
+      // |hs->server_params| contains a prefix for signing.
+      hs->server_params.size() < 2 * SSL3_RANDOM_SIZE ||
+      !CBB_add_bytes(&body, hs->server_params.data() + 2 * SSL3_RANDOM_SIZE,
+                     hs->server_params.size() - 2 * SSL3_RANDOM_SIZE)) {
+    return ssl_hs_error;
+  }
+
+  // Add a signature.
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    if (!ssl_has_private_key(hs)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Determine the signature algorithm.
+    uint16_t signature_algorithm;
+    if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+    if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+      if (!CBB_add_u16(&body, signature_algorithm)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+    }
+
+    // Add space for the signature.
+    const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+    uint8_t *ptr;
+    if (!CBB_add_u16_length_prefixed(&body, &child) ||
+        !CBB_reserve(&child, &ptr, max_sig_len)) {
+      return ssl_hs_error;
+    }
+
+    size_t sig_len;
+    switch (ssl_private_key_sign(hs, ptr, &sig_len, max_sig_len,
+                                 signature_algorithm, hs->server_params)) {
+      case ssl_private_key_success:
+        if (!CBB_did_write(&child, sig_len)) {
+          return ssl_hs_error;
+        }
+        break;
+      case ssl_private_key_failure:
+        return ssl_hs_error;
+      case ssl_private_key_retry:
+        return ssl_hs_private_key_operation;
+    }
+  }
+
+  if (!ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  hs->server_params.Reset();
+
+  hs->state = state12_send_server_hello_done;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_hello_done(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ScopedCBB cbb;
+  CBB body;
+
+  if (hs->cert_request) {
+    CBB cert_types, sigalgs_cbb;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_CERTIFICATE_REQUEST) ||
+        !CBB_add_u8_length_prefixed(&body, &cert_types) ||
+        !CBB_add_u8(&cert_types, SSL3_CT_RSA_SIGN) ||
+        !CBB_add_u8(&cert_types, TLS_CT_ECDSA_SIGN) ||
+        (ssl_protocol_version(ssl) >= TLS1_2_VERSION &&
+         (!CBB_add_u16_length_prefixed(&body, &sigalgs_cbb) ||
+          !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb))) ||
+        !ssl_add_client_CA_list(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_SERVER_HELLO_DONE) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_read_client_certificate;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->handback && hs->new_cipher->algorithm_mkey == SSL_kECDHE) {
+    return ssl_hs_handback;
+  }
+  if (!hs->cert_request) {
+    hs->state = state12_verify_client_certificate;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_msg = msg.body;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_cert_chain(&alert, &hs->new_session->certs, &hs->peer_pubkey,
+                            hs->config->retain_only_sha256_of_client_certs
+                                ? hs->new_session->peer_sha256
+                                : nullptr,
+                            &certificate_msg, ssl->ctx->pool)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&certificate_msg) != 0 ||
+      !ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    // No client certificate so the handshake buffer may be discarded.
+    hs->transcript.FreeBuffer();
+
+    if (hs->config->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
+      // Fail for TLS only if we required a certificate
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // OpenSSL returns X509_V_OK when no certificates are received. This is
+    // classed by them as a bug, but it's assumed by at least NGINX.
+    hs->new_session->verify_result = X509_V_OK;
+  } else if (hs->config->retain_only_sha256_of_client_certs) {
+    // The hash will have been filled in.
+    hs->new_session->peer_sha256_valid = 1;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_verify_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_verify_client_certificate(SSL_HANDSHAKE *hs) {
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) > 0) {
+    switch (ssl_verify_peer_cert(hs)) {
+      case ssl_verify_ok:
+        break;
+      case ssl_verify_invalid:
+        return ssl_hs_error;
+      case ssl_verify_retry:
+        return ssl_hs_certificate_verify;
+    }
+  }
+
+  hs->state = state12_read_client_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_KEY_EXCHANGE)) {
+    return ssl_hs_error;
+  }
+
+  CBS client_key_exchange = msg.body;
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+
+  // If using a PSK key exchange, parse the PSK identity.
+  if (alg_a & SSL_aPSK) {
+    CBS psk_identity;
+
+    // If using PSK, the ClientKeyExchange contains a psk_identity. If PSK,
+    // then this is the only field in the message.
+    if (!CBS_get_u16_length_prefixed(&client_key_exchange, &psk_identity) ||
+        ((alg_k & SSL_kPSK) && CBS_len(&client_key_exchange) != 0)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (CBS_len(&psk_identity) > PSK_MAX_IDENTITY_LEN ||
+        CBS_contains_zero_byte(&psk_identity)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    char *raw = nullptr;
+    if (!CBS_strdup(&psk_identity, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    hs->new_session->psk_identity.reset(raw);
+  }
+
+  // Depending on the key exchange method, compute |premaster_secret|.
+  Array<uint8_t> premaster_secret;
+  if (alg_k & SSL_kRSA) {
+    CBS encrypted_premaster_secret;
+    if (!CBS_get_u16_length_prefixed(&client_key_exchange,
+                                     &encrypted_premaster_secret) ||
+        CBS_len(&client_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Allocate a buffer large enough for an RSA decryption.
+    Array<uint8_t> decrypt_buf;
+    if (!decrypt_buf.Init(EVP_PKEY_size(hs->local_pubkey.get()))) {
+      return ssl_hs_error;
+    }
+
+    // Decrypt with no padding. PKCS#1 padding will be removed as part of the
+    // timing-sensitive code below.
+    size_t decrypt_len;
+    switch (ssl_private_key_decrypt(hs, decrypt_buf.data(), &decrypt_len,
+                                    decrypt_buf.size(),
+                                    encrypted_premaster_secret)) {
+      case ssl_private_key_success:
+        break;
+      case ssl_private_key_failure:
+        return ssl_hs_error;
+      case ssl_private_key_retry:
+        return ssl_hs_private_key_operation;
+    }
+
+    if (decrypt_len != decrypt_buf.size()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+
+    CONSTTIME_SECRET(decrypt_buf.data(), decrypt_len);
+
+    // Prepare a random premaster, to be used on invalid padding. See RFC 5246,
+    // section 7.4.7.1.
+    if (!premaster_secret.Init(SSL_MAX_MASTER_KEY_LENGTH) ||
+        !RAND_bytes(premaster_secret.data(), premaster_secret.size())) {
+      return ssl_hs_error;
+    }
+
+    // The smallest padded premaster is 11 bytes of overhead. Small keys are
+    // publicly invalid.
+    if (decrypt_len < 11 + premaster_secret.size()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Check the padding. See RFC 3447, section 7.2.2.
+    size_t padding_len = decrypt_len - premaster_secret.size();
+    uint8_t good = constant_time_eq_int_8(decrypt_buf[0], 0) &
+                   constant_time_eq_int_8(decrypt_buf[1], 2);
+    for (size_t i = 2; i < padding_len - 1; i++) {
+      good &= ~constant_time_is_zero_8(decrypt_buf[i]);
+    }
+    good &= constant_time_is_zero_8(decrypt_buf[padding_len - 1]);
+
+    // The premaster secret must begin with |client_version|. This too must be
+    // checked in constant time (http://eprint.iacr.org/2003/052/).
+    good &= constant_time_eq_8(decrypt_buf[padding_len],
+                               (unsigned)(hs->client_version >> 8));
+    good &= constant_time_eq_8(decrypt_buf[padding_len + 1],
+                               (unsigned)(hs->client_version & 0xff));
+
+    // Select, in constant time, either the decrypted premaster or the random
+    // premaster based on |good|.
+    for (size_t i = 0; i < premaster_secret.size(); i++) {
+      premaster_secret[i] = constant_time_select_8(
+          good, decrypt_buf[padding_len + i], premaster_secret[i]);
+    }
+  } else if (alg_k & SSL_kECDHE) {
+    // Parse the ClientKeyExchange.
+    CBS peer_key;
+    if (!CBS_get_u8_length_prefixed(&client_key_exchange, &peer_key) ||
+        CBS_len(&client_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Compute the premaster.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!hs->key_shares[0]->Finish(&premaster_secret, &alert, peer_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    // The key exchange state may now be discarded.
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+  } else if (!(alg_k & SSL_kPSK)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // For a PSK cipher suite, the actual pre-master secret is combined with the
+  // pre-shared key.
+  if (alg_a & SSL_aPSK) {
+    if (hs->config->psk_server_callback == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Look up the key for the identity.
+    uint8_t psk[PSK_MAX_PSK_LEN];
+    unsigned psk_len = hs->config->psk_server_callback(
+        ssl, hs->new_session->psk_identity.get(), psk, sizeof(psk));
+    if (psk_len > PSK_MAX_PSK_LEN) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    } else if (psk_len == 0) {
+      // PSK related to the given identity not found.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNKNOWN_PSK_IDENTITY);
+      return ssl_hs_error;
+    }
+
+    if (alg_k & SSL_kPSK) {
+      // In plain PSK, other_secret is a block of 0s with the same length as the
+      // pre-shared key.
+      if (!premaster_secret.Init(psk_len)) {
+        return ssl_hs_error;
+      }
+      OPENSSL_memset(premaster_secret.data(), 0, premaster_secret.size());
+    }
+
+    ScopedCBB new_premaster;
+    CBB child;
+    if (!CBB_init(new_premaster.get(),
+                  2 + psk_len + 2 + premaster_secret.size()) ||
+        !CBB_add_u16_length_prefixed(new_premaster.get(), &child) ||
+        !CBB_add_bytes(&child, premaster_secret.data(),
+                       premaster_secret.size()) ||
+        !CBB_add_u16_length_prefixed(new_premaster.get(), &child) ||
+        !CBB_add_bytes(&child, psk, psk_len) ||
+        !CBBFinishArray(new_premaster.get(), &premaster_secret)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Compute the master secret.
+  hs->new_session->master_key_length = tls1_generate_master_secret(
+      hs, hs->new_session->master_key, premaster_secret);
+  if (hs->new_session->master_key_length == 0) {
+    return ssl_hs_error;
+  }
+  hs->new_session->extended_master_secret = hs->extended_master_secret;
+  CONSTTIME_DECLASSIFY(hs->new_session->master_key,
+                       hs->new_session->master_key_length);
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Only RSA and ECDSA client certificates are supported, so a
+  // CertificateVerify is required if and only if there's a client certificate.
+  if (!hs->peer_pubkey) {
+    hs->transcript.FreeBuffer();
+    hs->state = state12_read_change_cipher_spec;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_verify = msg.body, signature;
+
+  // Determine the signature algorithm.
+  uint16_t signature_algorithm = 0;
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    if (!CBS_get_u16(&certificate_verify, &signature_algorithm)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+    hs->new_session->peer_signature_algorithm = signature_algorithm;
+  } else if (!tls1_get_legacy_signature_algorithm(&signature_algorithm,
+                                                  hs->peer_pubkey.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_CERTIFICATE);
+    return ssl_hs_error;
+  }
+
+  // Parse and verify the signature.
+  if (!CBS_get_u16_length_prefixed(&certificate_verify, &signature) ||
+      CBS_len(&certificate_verify) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                             hs->peer_pubkey.get(), hs->transcript.buffer())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    return ssl_hs_error;
+  }
+
+  // The handshake buffer is no longer necessary, and we may hash the current
+  // message.
+  hs->transcript.FreeBuffer();
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_change_cipher_spec;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (hs->handback && hs->ssl->session != NULL) {
+    return ssl_hs_handback;
+  }
+  hs->state = state12_process_change_cipher_spec;
+  return ssl_hs_read_change_cipher_spec;
+}
+
+static enum ssl_hs_wait_t do_process_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (!tls1_change_cipher_state(hs, evp_aead_open)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_read_next_proto;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_next_proto(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->next_proto_neg_seen) {
+    hs->state = state12_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_NEXT_PROTO) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS next_protocol = msg.body, selected_protocol, padding;
+  if (!CBS_get_u8_length_prefixed(&next_protocol, &selected_protocol) ||
+      !CBS_get_u8_length_prefixed(&next_protocol, &padding) ||
+      CBS_len(&next_protocol) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->next_proto_negotiated.CopyFrom(selected_protocol)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_channel_id;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl->s3->channel_id_valid) {
+    hs->state = state12_read_client_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CHANNEL_ID) ||
+      !tls1_verify_channel_id(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  enum ssl_hs_wait_t wait = ssl_get_finished(hs);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_finish_server_handshake;
+  } else {
+    hs->state = state12_send_server_finished;
+  }
+
+  // If this is a full handshake with ChannelID then record the handshake
+  // hashes in |hs->new_session| in case we need them to verify a
+  // ChannelID signature on a resumption of this session in the future.
+  if (ssl->session == NULL && ssl->s3->channel_id_valid &&
+      !tls1_record_handshake_hashes_for_channel_id(hs)) {
+    return ssl_hs_error;
+  }
+
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->ticket_expected) {
+    const SSL_SESSION *session;
+    UniquePtr<SSL_SESSION> session_copy;
+    if (ssl->session == NULL) {
+      // Fix the timeout to measure from the ticket issuance time.
+      ssl_session_rebase_time(ssl, hs->new_session.get());
+      session = hs->new_session.get();
+    } else {
+      // We are renewing an existing session. Duplicate the session to adjust
+      // the timeout.
+      session_copy =
+          SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+      if (!session_copy) {
+        return ssl_hs_error;
+      }
+
+      ssl_session_rebase_time(ssl, session_copy.get());
+      session = session_copy.get();
+    }
+
+    ScopedCBB cbb;
+    CBB body, ticket;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_NEW_SESSION_TICKET) ||
+        !CBB_add_u32(&body, session->timeout) ||
+        !CBB_add_u16_length_prefixed(&body, &ticket) ||
+        !ssl_encrypt_ticket(hs, &ticket, session) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl) ||
+      !tls1_change_cipher_state(hs, evp_aead_seal) ||
+      !ssl_send_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_read_change_cipher_spec;
+  } else {
+    hs->state = state12_finish_server_handshake;
+  }
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_finish_server_handshake(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->handback) {
+    return ssl_hs_handback;
+  }
+
+  ssl->method->on_handshake_complete(ssl);
+
+  // If we aren't retaining peer certificates then we can discard it now.
+  if (hs->new_session != NULL &&
+      hs->config->retain_only_sha256_of_client_certs) {
+    hs->new_session->certs.reset();
+    ssl->ctx->x509_method->session_clear(hs->new_session.get());
+  }
+
+  if (ssl->session != NULL) {
+    ssl->s3->established_session = UpRef(ssl->session);
+  } else {
+    ssl->s3->established_session = std::move(hs->new_session);
+    ssl->s3->established_session->not_resumable = false;
+  }
+
+  hs->handshake_finalized = true;
+  ssl->s3->initial_handshake_complete = true;
+  ssl_update_cache(hs, SSL_SESS_CACHE_SERVER);
+
+  hs->state = state12_done;
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_server_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->state != state12_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum tls12_server_hs_state_t state =
+        static_cast<enum tls12_server_hs_state_t>(hs->state);
+    switch (state) {
+      case state12_start_accept:
+        ret = do_start_accept(hs);
+        break;
+      case state12_read_client_hello:
+        ret = do_read_client_hello(hs);
+        break;
+      case state12_select_certificate:
+        ret = do_select_certificate(hs);
+        break;
+      case state12_tls13:
+        ret = do_tls13(hs);
+        break;
+      case state12_select_parameters:
+        ret = do_select_parameters(hs);
+        break;
+      case state12_send_server_hello:
+        ret = do_send_server_hello(hs);
+        break;
+      case state12_send_server_certificate:
+        ret = do_send_server_certificate(hs);
+        break;
+      case state12_send_server_key_exchange:
+        ret = do_send_server_key_exchange(hs);
+        break;
+      case state12_send_server_hello_done:
+        ret = do_send_server_hello_done(hs);
+        break;
+      case state12_read_client_certificate:
+        ret = do_read_client_certificate(hs);
+        break;
+      case state12_verify_client_certificate:
+        ret = do_verify_client_certificate(hs);
+        break;
+      case state12_read_client_key_exchange:
+        ret = do_read_client_key_exchange(hs);
+        break;
+      case state12_read_client_certificate_verify:
+        ret = do_read_client_certificate_verify(hs);
+        break;
+      case state12_read_change_cipher_spec:
+        ret = do_read_change_cipher_spec(hs);
+        break;
+      case state12_process_change_cipher_spec:
+        ret = do_process_change_cipher_spec(hs);
+        break;
+      case state12_read_next_proto:
+        ret = do_read_next_proto(hs);
+        break;
+      case state12_read_channel_id:
+        ret = do_read_channel_id(hs);
+        break;
+      case state12_read_client_finished:
+        ret = do_read_client_finished(hs);
+        break;
+      case state12_send_server_finished:
+        ret = do_send_server_finished(hs);
+        break;
+      case state12_finish_server_handshake:
+        ret = do_finish_server_handshake(hs);
+        break;
+      case state12_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_ACCEPT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_DONE, 1);
+  return ssl_hs_ok;
+}
+
+const char *ssl_server_handshake_state(SSL_HANDSHAKE *hs) {
+  enum tls12_server_hs_state_t state =
+      static_cast<enum tls12_server_hs_state_t>(hs->state);
+  switch (state) {
+    case state12_start_accept:
+      return "TLS server start_accept";
+    case state12_read_client_hello:
+      return "TLS server read_client_hello";
+    case state12_select_certificate:
+      return "TLS server select_certificate";
+    case state12_tls13:
+      return tls13_server_handshake_state(hs);
+    case state12_select_parameters:
+      return "TLS server select_parameters";
+    case state12_send_server_hello:
+      return "TLS server send_server_hello";
+    case state12_send_server_certificate:
+      return "TLS server send_server_certificate";
+    case state12_send_server_key_exchange:
+      return "TLS server send_server_key_exchange";
+    case state12_send_server_hello_done:
+      return "TLS server send_server_hello_done";
+    case state12_read_client_certificate:
+      return "TLS server read_client_certificate";
+    case state12_verify_client_certificate:
+      return "TLS server verify_client_certificate";
+    case state12_read_client_key_exchange:
+      return "TLS server read_client_key_exchange";
+    case state12_read_client_certificate_verify:
+      return "TLS server read_client_certificate_verify";
+    case state12_read_change_cipher_spec:
+      return "TLS server read_change_cipher_spec";
+    case state12_process_change_cipher_spec:
+      return "TLS server process_change_cipher_spec";
+    case state12_read_next_proto:
+      return "TLS server read_next_proto";
+    case state12_read_channel_id:
+      return "TLS server read_channel_id";
+    case state12_read_client_finished:
+      return "TLS server read_client_finished";
+    case state12_send_server_finished:
+      return "TLS server send_server_finished";
+    case state12_finish_server_handshake:
+      return "TLS server finish_server_handshake";
+    case state12_done:
+      return "TLS server done";
+  }
+
+  return "TLS server unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc.grpc_back
new file mode 100644
index 0000000..dfe14bf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/handshake_server.cc.grpc_back	
@@ -0,0 +1,1797 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/cipher.h>
+#include <openssl/ec.h>
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_client_cipher_list_contains_cipher(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t id) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t got_id;
+    if (!CBS_get_u16(&cipher_suites, &got_id)) {
+      return false;
+    }
+
+    if (got_id == id) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+static bool negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                              const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  assert(!ssl->s3->have_version);
+  CBS supported_versions, versions;
+  if (ssl_client_hello_get_extension(client_hello, &supported_versions,
+                                     TLSEXT_TYPE_supported_versions)) {
+    if (!CBS_get_u8_length_prefixed(&supported_versions, &versions) ||
+        CBS_len(&supported_versions) != 0 ||
+        CBS_len(&versions) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+  } else {
+    // Convert the ClientHello version to an equivalent supported_versions
+    // extension.
+    static const uint8_t kTLSVersions[] = {
+        0x03, 0x03,  // TLS 1.2
+        0x03, 0x02,  // TLS 1.1
+        0x03, 0x01,  // TLS 1
+    };
+
+    static const uint8_t kDTLSVersions[] = {
+        0xfe, 0xfd,  // DTLS 1.2
+        0xfe, 0xff,  // DTLS 1.0
+    };
+
+    size_t versions_len = 0;
+    if (SSL_is_dtls(ssl)) {
+      if (client_hello->version <= DTLS1_2_VERSION) {
+        versions_len = 4;
+      } else if (client_hello->version <= DTLS1_VERSION) {
+        versions_len = 2;
+      }
+      CBS_init(&versions, kDTLSVersions + sizeof(kDTLSVersions) - versions_len,
+               versions_len);
+    } else {
+      if (client_hello->version >= TLS1_2_VERSION) {
+        versions_len = 6;
+      } else if (client_hello->version >= TLS1_1_VERSION) {
+        versions_len = 4;
+      } else if (client_hello->version >= TLS1_VERSION) {
+        versions_len = 2;
+      }
+      CBS_init(&versions, kTLSVersions + sizeof(kTLSVersions) - versions_len,
+               versions_len);
+    }
+  }
+
+  if (!ssl_negotiate_version(hs, out_alert, &ssl->version, &versions)) {
+    return false;
+  }
+
+  // At this point, the connection's version is known and |ssl->version| is
+  // fixed. Begin enforcing the record-layer version.
+  ssl->s3->have_version = true;
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+
+  // Handle FALLBACK_SCSV.
+  if (ssl_client_cipher_list_contains_cipher(client_hello,
+                                             SSL3_CK_FALLBACK_SCSV & 0xffff) &&
+      ssl_protocol_version(ssl) < hs->max_version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INAPPROPRIATE_FALLBACK);
+    *out_alert = SSL3_AD_INAPPROPRIATE_FALLBACK;
+    return false;
+  }
+
+  return true;
+}
+
+static UniquePtr<STACK_OF(SSL_CIPHER)> ssl_parse_client_cipher_list(
+    const SSL_CLIENT_HELLO *client_hello) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> sk(sk_SSL_CIPHER_new_null());
+  if (!sk) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t cipher_suite;
+
+    if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
+      return nullptr;
+    }
+
+    const SSL_CIPHER *c = SSL_get_cipher_by_value(cipher_suite);
+    if (c != NULL && !sk_SSL_CIPHER_push(sk.get(), c)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+  }
+
+  return sk;
+}
+
+// ssl_get_compatible_server_ciphers determines the key exchange and
+// authentication cipher suite masks compatible with the server configuration
+// and current ClientHello parameters of |hs|. It sets |*out_mask_k| to the key
+// exchange mask and |*out_mask_a| to the authentication mask.
+static void ssl_get_compatible_server_ciphers(SSL_HANDSHAKE *hs,
+                                              uint32_t *out_mask_k,
+                                              uint32_t *out_mask_a) {
+  uint32_t mask_k = 0;
+  uint32_t mask_a = 0;
+
+  if (ssl_has_certificate(hs)) {
+    mask_a |= ssl_cipher_auth_mask_for_key(hs->local_pubkey.get());
+    if (EVP_PKEY_id(hs->local_pubkey.get()) == EVP_PKEY_RSA) {
+      mask_k |= SSL_kRSA;
+    }
+  }
+
+  // Check for a shared group to consider ECDHE ciphers.
+  uint16_t unused;
+  if (tls1_get_shared_group(hs, &unused)) {
+    mask_k |= SSL_kECDHE;
+  }
+
+  // PSK requires a server callback.
+  if (hs->config->psk_server_callback != NULL) {
+    mask_k |= SSL_kPSK;
+    mask_a |= SSL_aPSK;
+  }
+
+  *out_mask_k = mask_k;
+  *out_mask_a = mask_a;
+}
+
+static const SSL_CIPHER *ssl3_choose_cipher(
+    SSL_HANDSHAKE *hs, const SSL_CLIENT_HELLO *client_hello,
+    const SSLCipherPreferenceList *server_pref) {
+  SSL *const ssl = hs->ssl;
+  const STACK_OF(SSL_CIPHER) *prio, *allow;
+  // in_group_flags will either be NULL, or will point to an array of bytes
+  // which indicate equal-preference groups in the |prio| stack. See the
+  // comment about |in_group_flags| in the |SSLCipherPreferenceList|
+  // struct.
+  const bool *in_group_flags;
+  // group_min contains the minimal index so far found in a group, or -1 if no
+  // such value exists yet.
+  int group_min = -1;
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> client_pref =
+      ssl_parse_client_cipher_list(client_hello);
+  if (!client_pref) {
+    return nullptr;
+  }
+
+  if (ssl->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
+    prio = server_pref->ciphers.get();
+    in_group_flags = server_pref->in_group_flags;
+    allow = client_pref.get();
+  } else {
+    prio = client_pref.get();
+    in_group_flags = NULL;
+    allow = server_pref->ciphers.get();
+  }
+
+  uint32_t mask_k, mask_a;
+  ssl_get_compatible_server_ciphers(hs, &mask_k, &mask_a);
+
+  for (size_t i = 0; i < sk_SSL_CIPHER_num(prio); i++) {
+    const SSL_CIPHER *c = sk_SSL_CIPHER_value(prio, i);
+
+    size_t cipher_index;
+    if (// Check if the cipher is supported for the current version.
+        SSL_CIPHER_get_min_version(c) <= ssl_protocol_version(ssl) &&
+        ssl_protocol_version(ssl) <= SSL_CIPHER_get_max_version(c) &&
+        // Check the cipher is supported for the server configuration.
+        (c->algorithm_mkey & mask_k) &&
+        (c->algorithm_auth & mask_a) &&
+        // Check the cipher is in the |allow| list.
+        sk_SSL_CIPHER_find(allow, &cipher_index, c)) {
+      if (in_group_flags != NULL && in_group_flags[i]) {
+        // This element of |prio| is in a group. Update the minimum index found
+        // so far and continue looking.
+        if (group_min == -1 || (size_t)group_min > cipher_index) {
+          group_min = cipher_index;
+        }
+      } else {
+        if (group_min != -1 && (size_t)group_min < cipher_index) {
+          cipher_index = group_min;
+        }
+        return sk_SSL_CIPHER_value(allow, cipher_index);
+      }
+    }
+
+    if (in_group_flags != NULL && !in_group_flags[i] && group_min != -1) {
+      // We are about to leave a group, but we found a match in it, so that's
+      // our answer.
+      return sk_SSL_CIPHER_value(allow, group_min);
+    }
+  }
+
+  return nullptr;
+}
+
+static enum ssl_hs_wait_t do_start_accept(SSL_HANDSHAKE *hs) {
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_START, 1);
+  hs->state = state12_read_client_hello;
+  return ssl_hs_ok;
+}
+
+// is_probably_jdk11_with_tls13 returns whether |client_hello| was probably sent
+// from a JDK 11 client with both TLS 1.3 and a prior version enabled.
+static bool is_probably_jdk11_with_tls13(const SSL_CLIENT_HELLO *client_hello) {
+  // JDK 11 ClientHellos contain a number of unusual properties which should
+  // limit false positives.
+
+  // JDK 11 does not support ChaCha20-Poly1305. This is unusual: many modern
+  // clients implement ChaCha20-Poly1305.
+  if (ssl_client_cipher_list_contains_cipher(
+          client_hello, TLS1_CK_CHACHA20_POLY1305_SHA256 & 0xffff)) {
+    return false;
+  }
+
+  // JDK 11 always sends extensions in a particular order.
+  constexpr uint16_t kMaxFragmentLength = 0x0001;
+  constexpr uint16_t kStatusRequestV2 = 0x0011;
+  static CONSTEXPR_ARRAY struct {
+    uint16_t id;
+    bool required;
+  } kJavaExtensions[] = {
+      {TLSEXT_TYPE_server_name, false},
+      {kMaxFragmentLength, false},
+      {TLSEXT_TYPE_status_request, false},
+      {TLSEXT_TYPE_supported_groups, true},
+      {TLSEXT_TYPE_ec_point_formats, false},
+      {TLSEXT_TYPE_signature_algorithms, true},
+      // Java always sends signature_algorithms_cert.
+      {TLSEXT_TYPE_signature_algorithms_cert, true},
+      {TLSEXT_TYPE_application_layer_protocol_negotiation, false},
+      {kStatusRequestV2, false},
+      {TLSEXT_TYPE_extended_master_secret, false},
+      {TLSEXT_TYPE_supported_versions, true},
+      {TLSEXT_TYPE_cookie, false},
+      {TLSEXT_TYPE_psk_key_exchange_modes, true},
+      {TLSEXT_TYPE_key_share, true},
+      {TLSEXT_TYPE_renegotiate, false},
+      {TLSEXT_TYPE_pre_shared_key, false},
+  };
+  Span<const uint8_t> sigalgs, sigalgs_cert;
+  bool has_status_request = false, has_status_request_v2 = false;
+  CBS extensions, supported_groups;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  for (const auto &java_extension : kJavaExtensions) {
+    CBS copy = extensions;
+    uint16_t id;
+    if (CBS_get_u16(&copy, &id) && id == java_extension.id) {
+      // The next extension is the one we expected.
+      extensions = copy;
+      CBS body;
+      if (!CBS_get_u16_length_prefixed(&extensions, &body)) {
+        return false;
+      }
+      switch (id) {
+        case TLSEXT_TYPE_status_request:
+          has_status_request = true;
+          break;
+        case kStatusRequestV2:
+          has_status_request_v2 = true;
+          break;
+        case TLSEXT_TYPE_signature_algorithms:
+          sigalgs = body;
+          break;
+        case TLSEXT_TYPE_signature_algorithms_cert:
+          sigalgs_cert = body;
+          break;
+        case TLSEXT_TYPE_supported_groups:
+          supported_groups = body;
+          break;
+      }
+    } else if (java_extension.required) {
+      return false;
+    }
+  }
+  if (CBS_len(&extensions) != 0) {
+    return false;
+  }
+
+  // JDK 11 never advertises X25519. It is not offered by default, and
+  // -Djdk.tls.namedGroups=x25519 does not work. This is unusual: many modern
+  // clients implement X25519.
+  while (CBS_len(&supported_groups) > 0) {
+    uint16_t group;
+    if (!CBS_get_u16(&supported_groups, &group) ||
+        group == SSL_CURVE_X25519) {
+      return false;
+    }
+  }
+
+  if (// JDK 11 always sends the same contents in signature_algorithms and
+      // signature_algorithms_cert. This is unusual: signature_algorithms_cert,
+      // if omitted, is treated as if it were signature_algorithms.
+      sigalgs != sigalgs_cert ||
+      // When TLS 1.2 or below is enabled, JDK 11 sends status_request_v2 iff it
+      // sends status_request. This is unusual: status_request_v2 is not widely
+      // implemented.
+      has_status_request != has_status_request_v2) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool extract_sni(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  CBS sni;
+  if (!ssl_client_hello_get_extension(client_hello, &sni,
+                                      TLSEXT_TYPE_server_name)) {
+    // No SNI extension to parse.
+    return true;
+  }
+
+  CBS server_name_list, host_name;
+  uint8_t name_type;
+  if (!CBS_get_u16_length_prefixed(&sni, &server_name_list) ||
+      !CBS_get_u8(&server_name_list, &name_type) ||
+      // Although the server_name extension was intended to be extensible to
+      // new name types and multiple names, OpenSSL 1.0.x had a bug which meant
+      // different name types will cause an error. Further, RFC 4366 originally
+      // defined syntax inextensibly. RFC 6066 corrected this mistake, but
+      // adding new name types is no longer feasible.
+      //
+      // Act as if the extensibility does not exist to simplify parsing.
+      !CBS_get_u16_length_prefixed(&server_name_list, &host_name) ||
+      CBS_len(&server_name_list) != 0 ||
+      CBS_len(&sni) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  if (name_type != TLSEXT_NAMETYPE_host_name ||
+      CBS_len(&host_name) == 0 ||
+      CBS_len(&host_name) > TLSEXT_MAXLEN_host_name ||
+      CBS_contains_zero_byte(&host_name)) {
+    *out_alert = SSL_AD_UNRECOGNIZED_NAME;
+    return false;
+  }
+
+  // Copy the hostname as a string.
+  char *raw = nullptr;
+  if (!CBS_strdup(&host_name, &raw)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+  ssl->s3->hostname.reset(raw);
+
+  hs->should_ack_sni = true;
+  return true;
+}
+
+static enum ssl_hs_wait_t do_read_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (hs->config->handoff) {
+    return ssl_hs_handoff;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!extract_sni(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Run the early callback.
+  if (ssl->ctx->select_certificate_cb != NULL) {
+    switch (ssl->ctx->select_certificate_cb(&client_hello)) {
+      case ssl_select_cert_retry:
+        return ssl_hs_certificate_selection_pending;
+
+      case ssl_select_cert_error:
+        // Connection rejected.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+        return ssl_hs_error;
+
+      default:
+        /* fallthrough */;
+    }
+  }
+
+  // Freeze the version range after the early callback.
+  if (!ssl_get_version_range(hs, &hs->min_version, &hs->max_version)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->config->jdk11_workaround &&
+      is_probably_jdk11_with_tls13(&client_hello)) {
+    hs->apply_jdk11_workaround = true;
+  }
+
+  if (!negotiate_version(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  hs->client_version = client_hello.version;
+  if (client_hello.random_len != SSL3_RANDOM_SIZE) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+  OPENSSL_memcpy(ssl->s3->client_random, client_hello.random,
+                 client_hello.random_len);
+
+  // Only null compression is supported. TLS 1.3 further requires the peer
+  // advertise no other compression.
+  if (OPENSSL_memchr(client_hello.compression_methods, 0,
+                     client_hello.compression_methods_len) == NULL ||
+      (ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+       client_hello.compression_methods_len != 1)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMPRESSION_LIST);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // TLS extensions.
+  if (!ssl_parse_clienthello_tlsext(hs, &client_hello)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_select_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_select_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // Call |cert_cb| to update server certificates if required.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_on_certificate_selected(hs)) {
+    return ssl_hs_error;
+  }
+
+  if (hs->ocsp_stapling_requested &&
+      ssl->ctx->legacy_ocsp_callback != nullptr) {
+    switch (ssl->ctx->legacy_ocsp_callback(
+        ssl, ssl->ctx->legacy_ocsp_callback_arg)) {
+      case SSL_TLSEXT_ERR_OK:
+        break;
+      case SSL_TLSEXT_ERR_NOACK:
+        hs->ocsp_stapling_requested = false;
+        break;
+      default:
+        OPENSSL_PUT_ERROR(SSL, SSL_R_OCSP_CB_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+    }
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    // Jump to the TLS 1.3 state machine.
+    hs->state = state12_tls13;
+    return ssl_hs_ok;
+  }
+
+  ssl->s3->early_data_reason = ssl_early_data_protocol_version;
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Negotiate the cipher suite. This must be done after |cert_cb| so the
+  // certificate is finalized.
+  SSLCipherPreferenceList *prefs = hs->config->cipher_list
+                                       ? hs->config->cipher_list.get()
+                                       : ssl->ctx->cipher_list.get();
+  hs->new_cipher = ssl3_choose_cipher(hs, &client_hello, prefs);
+  if (hs->new_cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_CIPHER);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_select_parameters;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_tls13(SSL_HANDSHAKE *hs) {
+  enum ssl_hs_wait_t wait = tls13_server_handshake(hs);
+  if (wait == ssl_hs_ok) {
+    hs->state = state12_finish_server_handshake;
+    return ssl_hs_ok;
+  }
+
+  return wait;
+}
+
+static enum ssl_hs_wait_t do_select_parameters(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Determine whether we are doing session resumption.
+  UniquePtr<SSL_SESSION> session;
+  bool tickets_supported = false, renew_ticket = false;
+  enum ssl_hs_wait_t wait = ssl_get_prev_session(
+      hs, &session, &tickets_supported, &renew_ticket, &client_hello);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (session) {
+    if (session->extended_master_secret && !hs->extended_master_secret) {
+      // A ClientHello without EMS that attempts to resume a session with EMS
+      // is fatal to the connection.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_RESUMED_EMS_SESSION_WITHOUT_EMS_EXTENSION);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_session_is_resumable(hs, session.get()) ||
+        // If the client offers the EMS extension, but the previous session
+        // didn't use it, then negotiate a new session.
+        hs->extended_master_secret != session->extended_master_secret) {
+      session.reset();
+    }
+  }
+
+  if (session) {
+    // Use the old session.
+    hs->ticket_expected = renew_ticket;
+    ssl->session = std::move(session);
+    ssl->s3->session_reused = true;
+  } else {
+    hs->ticket_expected = tickets_supported;
+    ssl_set_session(ssl, NULL);
+    if (!ssl_get_new_session(hs, 1 /* server */)) {
+      return ssl_hs_error;
+    }
+
+    // Clear the session ID if we want the session to be single-use.
+    if (!(ssl->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)) {
+      hs->new_session->session_id_length = 0;
+    }
+  }
+
+  if (ssl->ctx->dos_protection_cb != NULL &&
+      ssl->ctx->dos_protection_cb(&client_hello) == 0) {
+    // Connection rejected for DOS reasons.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session == NULL) {
+    hs->new_session->cipher = hs->new_cipher;
+
+    // Determine whether to request a client certificate.
+    hs->cert_request = !!(hs->config->verify_mode & SSL_VERIFY_PEER);
+    // Only request a certificate if Channel ID isn't negotiated.
+    if ((hs->config->verify_mode & SSL_VERIFY_PEER_IF_NO_OBC) &&
+        ssl->s3->channel_id_valid) {
+      hs->cert_request = false;
+    }
+    // CertificateRequest may only be sent in certificate-based ciphers.
+    if (!ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+      hs->cert_request = false;
+    }
+
+    if (!hs->cert_request) {
+      // OpenSSL returns X509_V_OK when no certificates are requested. This is
+      // classed by them as a bug, but it's assumed by at least NGINX.
+      hs->new_session->verify_result = X509_V_OK;
+    }
+  }
+
+  // HTTP/2 negotiation depends on the cipher suite, so ALPN negotiation was
+  // deferred. Complete it now.
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_negotiate_alpn(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Now that all parameters are known, initialize the handshake hash and hash
+  // the ClientHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !ssl_hash_message(hs, msg)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Handback includes the whole handshake transcript, so we cannot free the
+  // transcript buffer in the handback case.
+  if (!hs->cert_request && !hs->handback) {
+    hs->transcript.FreeBuffer();
+  }
+
+  ssl->method->next_message(ssl);
+
+  hs->state = state12_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static void copy_suffix(Span<uint8_t> out, Span<const uint8_t> in) {
+  out = out.subspan(out.size() - in.size());
+  assert(out.size() == in.size());
+  OPENSSL_memcpy(out.data(), in.data(), in.size());
+}
+
+static enum ssl_hs_wait_t do_send_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // We only accept ChannelIDs on connections with ECDHE in order to avoid a
+  // known attack while we fix ChannelID itself.
+  if (ssl->s3->channel_id_valid &&
+      (hs->new_cipher->algorithm_mkey & SSL_kECDHE) == 0) {
+    ssl->s3->channel_id_valid = false;
+  }
+
+  // If this is a resumption and the original handshake didn't support
+  // ChannelID then we didn't record the original handshake hashes in the
+  // session and so cannot resume with ChannelIDs.
+  if (ssl->session != NULL &&
+      ssl->session->original_handshake_hash_len == 0) {
+    ssl->s3->channel_id_valid = false;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  ssl->s3->server_random[0] = now.tv_sec >> 24;
+  ssl->s3->server_random[1] = now.tv_sec >> 16;
+  ssl->s3->server_random[2] = now.tv_sec >> 8;
+  ssl->s3->server_random[3] = now.tv_sec;
+  if (!RAND_bytes(ssl->s3->server_random + 4, SSL3_RANDOM_SIZE - 4)) {
+    return ssl_hs_error;
+  }
+
+  // Implement the TLS 1.3 anti-downgrade feature.
+  if (ssl_supports_version(hs, TLS1_3_VERSION)) {
+    if (ssl_protocol_version(ssl) == TLS1_2_VERSION) {
+      if (hs->apply_jdk11_workaround) {
+        // JDK 11 implements the TLS 1.3 downgrade signal, so we cannot send it
+        // here. However, the signal is only effective if all TLS 1.2
+        // ServerHellos produced by the server are marked. Thus we send a
+        // different non-standard signal for the time being, until JDK 11.0.2 is
+        // released and clients have updated.
+        copy_suffix(ssl->s3->server_random, kJDK11DowngradeRandom);
+      } else {
+        copy_suffix(ssl->s3->server_random, kTLS13DowngradeRandom);
+      }
+    } else {
+      copy_suffix(ssl->s3->server_random, kTLS12DowngradeRandom);
+    }
+  }
+
+  const SSL_SESSION *session = hs->new_session.get();
+  if (ssl->session != nullptr) {
+    session = ssl->session.get();
+  }
+
+  ScopedCBB cbb;
+  CBB body, session_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, ssl->version) ||
+      !CBB_add_bytes(&body, ssl->s3->server_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, session->session_id,
+                     session->session_id_length) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0 /* no compression */) ||
+      !ssl_add_serverhello_tlsext(hs, &body) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_send_server_finished;
+  } else {
+    hs->state = state12_send_server_certificate;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ScopedCBB cbb;
+
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    if (!ssl_has_certificate(hs)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_SET);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_output_cert_chain(hs)) {
+      return ssl_hs_error;
+    }
+
+    if (hs->certificate_status_expected) {
+      CBB body, ocsp_response;
+      if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                     SSL3_MT_CERTIFICATE_STATUS) ||
+          !CBB_add_u8(&body, TLSEXT_STATUSTYPE_ocsp) ||
+          !CBB_add_u24_length_prefixed(&body, &ocsp_response) ||
+          !CBB_add_bytes(
+              &ocsp_response,
+              CRYPTO_BUFFER_data(hs->config->cert->ocsp_response.get()),
+              CRYPTO_BUFFER_len(hs->config->cert->ocsp_response.get())) ||
+          !ssl_add_message_cbb(ssl, cbb.get())) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  // Assemble ServerKeyExchange parameters if needed.
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  if (ssl_cipher_requires_server_key_exchange(hs->new_cipher) ||
+      ((alg_a & SSL_aPSK) && hs->config->psk_identity_hint)) {
+    // Pre-allocate enough room to comfortably fit an ECDHE public key. Prepend
+    // the client and server randoms for the signing transcript.
+    CBB child;
+    if (!CBB_init(cbb.get(), SSL3_RANDOM_SIZE * 2 + 128) ||
+        !CBB_add_bytes(cbb.get(), ssl->s3->client_random, SSL3_RANDOM_SIZE) ||
+        !CBB_add_bytes(cbb.get(), ssl->s3->server_random, SSL3_RANDOM_SIZE)) {
+      return ssl_hs_error;
+    }
+
+    // PSK ciphers begin with an identity hint.
+    if (alg_a & SSL_aPSK) {
+      size_t len = hs->config->psk_identity_hint == nullptr
+                       ? 0
+                       : strlen(hs->config->psk_identity_hint.get());
+      if (!CBB_add_u16_length_prefixed(cbb.get(), &child) ||
+          !CBB_add_bytes(&child,
+                         (const uint8_t *)hs->config->psk_identity_hint.get(),
+                         len)) {
+        return ssl_hs_error;
+      }
+    }
+
+    if (alg_k & SSL_kECDHE) {
+      // Determine the group to use.
+      uint16_t group_id;
+      if (!tls1_get_shared_group(hs, &group_id)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+        return ssl_hs_error;
+       }
+      hs->new_session->group_id = group_id;
+
+      // Set up ECDH, generate a key, and emit the public half.
+      hs->key_shares[0] = SSLKeyShare::Create(group_id);
+      if (!hs->key_shares[0] ||
+          !CBB_add_u8(cbb.get(), NAMED_CURVE_TYPE) ||
+          !CBB_add_u16(cbb.get(), group_id) ||
+          !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+          !hs->key_shares[0]->Offer(&child)) {
+        return ssl_hs_error;
+      }
+    } else {
+      assert(alg_k & SSL_kPSK);
+    }
+
+    if (!CBBFinishArray(cbb.get(), &hs->server_params)) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->state = state12_send_server_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->server_params.size() == 0) {
+    hs->state = state12_send_server_hello_done;
+    return ssl_hs_ok;
+  }
+
+  ScopedCBB cbb;
+  CBB body, child;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_SERVER_KEY_EXCHANGE) ||
+      // |hs->server_params| contains a prefix for signing.
+      hs->server_params.size() < 2 * SSL3_RANDOM_SIZE ||
+      !CBB_add_bytes(&body, hs->server_params.data() + 2 * SSL3_RANDOM_SIZE,
+                     hs->server_params.size() - 2 * SSL3_RANDOM_SIZE)) {
+    return ssl_hs_error;
+  }
+
+  // Add a signature.
+  if (ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    if (!ssl_has_private_key(hs)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Determine the signature algorithm.
+    uint16_t signature_algorithm;
+    if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+    if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+      if (!CBB_add_u16(&body, signature_algorithm)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+    }
+
+    // Add space for the signature.
+    const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+    uint8_t *ptr;
+    if (!CBB_add_u16_length_prefixed(&body, &child) ||
+        !CBB_reserve(&child, &ptr, max_sig_len)) {
+      return ssl_hs_error;
+    }
+
+    size_t sig_len;
+    switch (ssl_private_key_sign(hs, ptr, &sig_len, max_sig_len,
+                                 signature_algorithm, hs->server_params)) {
+      case ssl_private_key_success:
+        if (!CBB_did_write(&child, sig_len)) {
+          return ssl_hs_error;
+        }
+        break;
+      case ssl_private_key_failure:
+        return ssl_hs_error;
+      case ssl_private_key_retry:
+        return ssl_hs_private_key_operation;
+    }
+  }
+
+  if (!ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  hs->server_params.Reset();
+
+  hs->state = state12_send_server_hello_done;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_hello_done(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  ScopedCBB cbb;
+  CBB body;
+
+  if (hs->cert_request) {
+    CBB cert_types, sigalgs_cbb;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_CERTIFICATE_REQUEST) ||
+        !CBB_add_u8_length_prefixed(&body, &cert_types) ||
+        !CBB_add_u8(&cert_types, SSL3_CT_RSA_SIGN) ||
+        !CBB_add_u8(&cert_types, TLS_CT_ECDSA_SIGN) ||
+        (ssl_protocol_version(ssl) >= TLS1_2_VERSION &&
+         (!CBB_add_u16_length_prefixed(&body, &sigalgs_cbb) ||
+          !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb))) ||
+        !ssl_add_client_CA_list(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_SERVER_HELLO_DONE) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_read_client_certificate;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->handback && hs->new_cipher->algorithm_mkey == SSL_kECDHE) {
+    return ssl_hs_handback;
+  }
+  if (!hs->cert_request) {
+    hs->state = state12_verify_client_certificate;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_msg = msg.body;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_cert_chain(&alert, &hs->new_session->certs, &hs->peer_pubkey,
+                            hs->config->retain_only_sha256_of_client_certs
+                                ? hs->new_session->peer_sha256
+                                : nullptr,
+                            &certificate_msg, ssl->ctx->pool)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (CBS_len(&certificate_msg) != 0 ||
+      !ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    // No client certificate so the handshake buffer may be discarded.
+    hs->transcript.FreeBuffer();
+
+    if (hs->config->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
+      // Fail for TLS only if we required a certificate
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+      return ssl_hs_error;
+    }
+
+    // OpenSSL returns X509_V_OK when no certificates are received. This is
+    // classed by them as a bug, but it's assumed by at least NGINX.
+    hs->new_session->verify_result = X509_V_OK;
+  } else if (hs->config->retain_only_sha256_of_client_certs) {
+    // The hash will have been filled in.
+    hs->new_session->peer_sha256_valid = 1;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_verify_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_verify_client_certificate(SSL_HANDSHAKE *hs) {
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) > 0) {
+    switch (ssl_verify_peer_cert(hs)) {
+      case ssl_verify_ok:
+        break;
+      case ssl_verify_invalid:
+        return ssl_hs_error;
+      case ssl_verify_retry:
+        return ssl_hs_certificate_verify;
+    }
+  }
+
+  hs->state = state12_read_client_key_exchange;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_key_exchange(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_KEY_EXCHANGE)) {
+    return ssl_hs_error;
+  }
+
+  CBS client_key_exchange = msg.body;
+  uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  uint32_t alg_a = hs->new_cipher->algorithm_auth;
+
+  // If using a PSK key exchange, parse the PSK identity.
+  if (alg_a & SSL_aPSK) {
+    CBS psk_identity;
+
+    // If using PSK, the ClientKeyExchange contains a psk_identity. If PSK,
+    // then this is the only field in the message.
+    if (!CBS_get_u16_length_prefixed(&client_key_exchange, &psk_identity) ||
+        ((alg_k & SSL_kPSK) && CBS_len(&client_key_exchange) != 0)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (CBS_len(&psk_identity) > PSK_MAX_IDENTITY_LEN ||
+        CBS_contains_zero_byte(&psk_identity)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+    char *raw = nullptr;
+    if (!CBS_strdup(&psk_identity, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    hs->new_session->psk_identity.reset(raw);
+  }
+
+  // Depending on the key exchange method, compute |premaster_secret|.
+  Array<uint8_t> premaster_secret;
+  if (alg_k & SSL_kRSA) {
+    CBS encrypted_premaster_secret;
+    if (!CBS_get_u16_length_prefixed(&client_key_exchange,
+                                     &encrypted_premaster_secret) ||
+        CBS_len(&client_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Allocate a buffer large enough for an RSA decryption.
+    Array<uint8_t> decrypt_buf;
+    if (!decrypt_buf.Init(EVP_PKEY_size(hs->local_pubkey.get()))) {
+      return ssl_hs_error;
+    }
+
+    // Decrypt with no padding. PKCS#1 padding will be removed as part of the
+    // timing-sensitive code below.
+    size_t decrypt_len;
+    switch (ssl_private_key_decrypt(hs, decrypt_buf.data(), &decrypt_len,
+                                    decrypt_buf.size(),
+                                    encrypted_premaster_secret)) {
+      case ssl_private_key_success:
+        break;
+      case ssl_private_key_failure:
+        return ssl_hs_error;
+      case ssl_private_key_retry:
+        return ssl_hs_private_key_operation;
+    }
+
+    if (decrypt_len != decrypt_buf.size()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+
+    CONSTTIME_SECRET(decrypt_buf.data(), decrypt_len);
+
+    // Prepare a random premaster, to be used on invalid padding. See RFC 5246,
+    // section 7.4.7.1.
+    if (!premaster_secret.Init(SSL_MAX_MASTER_KEY_LENGTH) ||
+        !RAND_bytes(premaster_secret.data(), premaster_secret.size())) {
+      return ssl_hs_error;
+    }
+
+    // The smallest padded premaster is 11 bytes of overhead. Small keys are
+    // publicly invalid.
+    if (decrypt_len < 11 + premaster_secret.size()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Check the padding. See RFC 3447, section 7.2.2.
+    size_t padding_len = decrypt_len - premaster_secret.size();
+    uint8_t good = constant_time_eq_int_8(decrypt_buf[0], 0) &
+                   constant_time_eq_int_8(decrypt_buf[1], 2);
+    for (size_t i = 2; i < padding_len - 1; i++) {
+      good &= ~constant_time_is_zero_8(decrypt_buf[i]);
+    }
+    good &= constant_time_is_zero_8(decrypt_buf[padding_len - 1]);
+
+    // The premaster secret must begin with |client_version|. This too must be
+    // checked in constant time (http://eprint.iacr.org/2003/052/).
+    good &= constant_time_eq_8(decrypt_buf[padding_len],
+                               (unsigned)(hs->client_version >> 8));
+    good &= constant_time_eq_8(decrypt_buf[padding_len + 1],
+                               (unsigned)(hs->client_version & 0xff));
+
+    // Select, in constant time, either the decrypted premaster or the random
+    // premaster based on |good|.
+    for (size_t i = 0; i < premaster_secret.size(); i++) {
+      premaster_secret[i] = constant_time_select_8(
+          good, decrypt_buf[padding_len + i], premaster_secret[i]);
+    }
+  } else if (alg_k & SSL_kECDHE) {
+    // Parse the ClientKeyExchange.
+    CBS peer_key;
+    if (!CBS_get_u8_length_prefixed(&client_key_exchange, &peer_key) ||
+        CBS_len(&client_key_exchange) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Compute the premaster.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!hs->key_shares[0]->Finish(&premaster_secret, &alert, peer_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    // The key exchange state may now be discarded.
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+  } else if (!(alg_k & SSL_kPSK)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // For a PSK cipher suite, the actual pre-master secret is combined with the
+  // pre-shared key.
+  if (alg_a & SSL_aPSK) {
+    if (hs->config->psk_server_callback == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Look up the key for the identity.
+    uint8_t psk[PSK_MAX_PSK_LEN];
+    unsigned psk_len = hs->config->psk_server_callback(
+        ssl, hs->new_session->psk_identity.get(), psk, sizeof(psk));
+    if (psk_len > PSK_MAX_PSK_LEN) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    } else if (psk_len == 0) {
+      // PSK related to the given identity not found.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNKNOWN_PSK_IDENTITY);
+      return ssl_hs_error;
+    }
+
+    if (alg_k & SSL_kPSK) {
+      // In plain PSK, other_secret is a block of 0s with the same length as the
+      // pre-shared key.
+      if (!premaster_secret.Init(psk_len)) {
+        return ssl_hs_error;
+      }
+      OPENSSL_memset(premaster_secret.data(), 0, premaster_secret.size());
+    }
+
+    ScopedCBB new_premaster;
+    CBB child;
+    if (!CBB_init(new_premaster.get(),
+                  2 + psk_len + 2 + premaster_secret.size()) ||
+        !CBB_add_u16_length_prefixed(new_premaster.get(), &child) ||
+        !CBB_add_bytes(&child, premaster_secret.data(),
+                       premaster_secret.size()) ||
+        !CBB_add_u16_length_prefixed(new_premaster.get(), &child) ||
+        !CBB_add_bytes(&child, psk, psk_len) ||
+        !CBBFinishArray(new_premaster.get(), &premaster_secret)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  // Compute the master secret.
+  hs->new_session->master_key_length = tls1_generate_master_secret(
+      hs, hs->new_session->master_key, premaster_secret);
+  if (hs->new_session->master_key_length == 0) {
+    return ssl_hs_error;
+  }
+  hs->new_session->extended_master_secret = hs->extended_master_secret;
+  CONSTTIME_DECLASSIFY(hs->new_session->master_key,
+                       hs->new_session->master_key_length);
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Only RSA and ECDSA client certificates are supported, so a
+  // CertificateVerify is required if and only if there's a client certificate.
+  if (!hs->peer_pubkey) {
+    hs->transcript.FreeBuffer();
+    hs->state = state12_read_change_cipher_spec;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY)) {
+    return ssl_hs_error;
+  }
+
+  CBS certificate_verify = msg.body, signature;
+
+  // Determine the signature algorithm.
+  uint16_t signature_algorithm = 0;
+  if (ssl_protocol_version(ssl) >= TLS1_2_VERSION) {
+    if (!CBS_get_u16(&certificate_verify, &signature_algorithm)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+    hs->new_session->peer_signature_algorithm = signature_algorithm;
+  } else if (!tls1_get_legacy_signature_algorithm(&signature_algorithm,
+                                                  hs->peer_pubkey.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_CERTIFICATE);
+    return ssl_hs_error;
+  }
+
+  // Parse and verify the signature.
+  if (!CBS_get_u16_length_prefixed(&certificate_verify, &signature) ||
+      CBS_len(&certificate_verify) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                             hs->peer_pubkey.get(), hs->transcript.buffer())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    return ssl_hs_error;
+  }
+
+  // The handshake buffer is no longer necessary, and we may hash the current
+  // message.
+  hs->transcript.FreeBuffer();
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_change_cipher_spec;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (hs->handback && hs->ssl->session != NULL) {
+    return ssl_hs_handback;
+  }
+  hs->state = state12_process_change_cipher_spec;
+  return ssl_hs_read_change_cipher_spec;
+}
+
+static enum ssl_hs_wait_t do_process_change_cipher_spec(SSL_HANDSHAKE *hs) {
+  if (!tls1_change_cipher_state(hs, evp_aead_open)) {
+    return ssl_hs_error;
+  }
+
+  hs->state = state12_read_next_proto;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_next_proto(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!hs->next_proto_neg_seen) {
+    hs->state = state12_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_NEXT_PROTO) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  CBS next_protocol = msg.body, selected_protocol, padding;
+  if (!CBS_get_u8_length_prefixed(&next_protocol, &selected_protocol) ||
+      !CBS_get_u8_length_prefixed(&next_protocol, &padding) ||
+      CBS_len(&next_protocol) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->next_proto_negotiated.CopyFrom(selected_protocol)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_channel_id;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl->s3->channel_id_valid) {
+    hs->state = state12_read_client_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CHANNEL_ID) ||
+      !tls1_verify_channel_id(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->state = state12_read_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  enum ssl_hs_wait_t wait = ssl_get_finished(hs);
+  if (wait != ssl_hs_ok) {
+    return wait;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_finish_server_handshake;
+  } else {
+    hs->state = state12_send_server_finished;
+  }
+
+  // If this is a full handshake with ChannelID then record the handshake
+  // hashes in |hs->new_session| in case we need them to verify a
+  // ChannelID signature on a resumption of this session in the future.
+  if (ssl->session == NULL && ssl->s3->channel_id_valid &&
+      !tls1_record_handshake_hashes_for_channel_id(hs)) {
+    return ssl_hs_error;
+  }
+
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->ticket_expected) {
+    const SSL_SESSION *session;
+    UniquePtr<SSL_SESSION> session_copy;
+    if (ssl->session == NULL) {
+      // Fix the timeout to measure from the ticket issuance time.
+      ssl_session_rebase_time(ssl, hs->new_session.get());
+      session = hs->new_session.get();
+    } else {
+      // We are renewing an existing session. Duplicate the session to adjust
+      // the timeout.
+      session_copy =
+          SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+      if (!session_copy) {
+        return ssl_hs_error;
+      }
+
+      ssl_session_rebase_time(ssl, session_copy.get());
+      session = session_copy.get();
+    }
+
+    ScopedCBB cbb;
+    CBB body, ticket;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_NEW_SESSION_TICKET) ||
+        !CBB_add_u32(&body, session->timeout) ||
+        !CBB_add_u16_length_prefixed(&body, &ticket) ||
+        !ssl_encrypt_ticket(hs, &ticket, session) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl) ||
+      !tls1_change_cipher_state(hs, evp_aead_seal) ||
+      !ssl_send_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->session != NULL) {
+    hs->state = state12_read_change_cipher_spec;
+  } else {
+    hs->state = state12_finish_server_handshake;
+  }
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_finish_server_handshake(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (hs->handback) {
+    return ssl_hs_handback;
+  }
+
+  ssl->method->on_handshake_complete(ssl);
+
+  // If we aren't retaining peer certificates then we can discard it now.
+  if (hs->new_session != NULL &&
+      hs->config->retain_only_sha256_of_client_certs) {
+    hs->new_session->certs.reset();
+    ssl->ctx->x509_method->session_clear(hs->new_session.get());
+  }
+
+  if (ssl->session != NULL) {
+    ssl->s3->established_session = UpRef(ssl->session);
+  } else {
+    ssl->s3->established_session = std::move(hs->new_session);
+    ssl->s3->established_session->not_resumable = false;
+  }
+
+  hs->handshake_finalized = true;
+  ssl->s3->initial_handshake_complete = true;
+  ssl_update_cache(hs, SSL_SESS_CACHE_SERVER);
+
+  hs->state = state12_done;
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_server_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->state != state12_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum tls12_server_hs_state_t state =
+        static_cast<enum tls12_server_hs_state_t>(hs->state);
+    switch (state) {
+      case state12_start_accept:
+        ret = do_start_accept(hs);
+        break;
+      case state12_read_client_hello:
+        ret = do_read_client_hello(hs);
+        break;
+      case state12_select_certificate:
+        ret = do_select_certificate(hs);
+        break;
+      case state12_tls13:
+        ret = do_tls13(hs);
+        break;
+      case state12_select_parameters:
+        ret = do_select_parameters(hs);
+        break;
+      case state12_send_server_hello:
+        ret = do_send_server_hello(hs);
+        break;
+      case state12_send_server_certificate:
+        ret = do_send_server_certificate(hs);
+        break;
+      case state12_send_server_key_exchange:
+        ret = do_send_server_key_exchange(hs);
+        break;
+      case state12_send_server_hello_done:
+        ret = do_send_server_hello_done(hs);
+        break;
+      case state12_read_client_certificate:
+        ret = do_read_client_certificate(hs);
+        break;
+      case state12_verify_client_certificate:
+        ret = do_verify_client_certificate(hs);
+        break;
+      case state12_read_client_key_exchange:
+        ret = do_read_client_key_exchange(hs);
+        break;
+      case state12_read_client_certificate_verify:
+        ret = do_read_client_certificate_verify(hs);
+        break;
+      case state12_read_change_cipher_spec:
+        ret = do_read_change_cipher_spec(hs);
+        break;
+      case state12_process_change_cipher_spec:
+        ret = do_process_change_cipher_spec(hs);
+        break;
+      case state12_read_next_proto:
+        ret = do_read_next_proto(hs);
+        break;
+      case state12_read_channel_id:
+        ret = do_read_channel_id(hs);
+        break;
+      case state12_read_client_finished:
+        ret = do_read_client_finished(hs);
+        break;
+      case state12_send_server_finished:
+        ret = do_send_server_finished(hs);
+        break;
+      case state12_finish_server_handshake:
+        ret = do_finish_server_handshake(hs);
+        break;
+      case state12_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_ACCEPT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  ssl_do_info_callback(hs->ssl, SSL_CB_HANDSHAKE_DONE, 1);
+  return ssl_hs_ok;
+}
+
+const char *ssl_server_handshake_state(SSL_HANDSHAKE *hs) {
+  enum tls12_server_hs_state_t state =
+      static_cast<enum tls12_server_hs_state_t>(hs->state);
+  switch (state) {
+    case state12_start_accept:
+      return "TLS server start_accept";
+    case state12_read_client_hello:
+      return "TLS server read_client_hello";
+    case state12_select_certificate:
+      return "TLS server select_certificate";
+    case state12_tls13:
+      return tls13_server_handshake_state(hs);
+    case state12_select_parameters:
+      return "TLS server select_parameters";
+    case state12_send_server_hello:
+      return "TLS server send_server_hello";
+    case state12_send_server_certificate:
+      return "TLS server send_server_certificate";
+    case state12_send_server_key_exchange:
+      return "TLS server send_server_key_exchange";
+    case state12_send_server_hello_done:
+      return "TLS server send_server_hello_done";
+    case state12_read_client_certificate:
+      return "TLS server read_client_certificate";
+    case state12_verify_client_certificate:
+      return "TLS server verify_client_certificate";
+    case state12_read_client_key_exchange:
+      return "TLS server read_client_key_exchange";
+    case state12_read_client_certificate_verify:
+      return "TLS server read_client_certificate_verify";
+    case state12_read_change_cipher_spec:
+      return "TLS server read_change_cipher_spec";
+    case state12_process_change_cipher_spec:
+      return "TLS server process_change_cipher_spec";
+    case state12_read_next_proto:
+      return "TLS server read_next_proto";
+    case state12_read_channel_id:
+      return "TLS server read_channel_id";
+    case state12_read_client_finished:
+      return "TLS server read_client_finished";
+    case state12_send_server_finished:
+      return "TLS server send_server_finished";
+    case state12_finish_server_handshake:
+      return "TLS server finish_server_handshake";
+    case state12_done:
+      return "TLS server done";
+  }
+
+  return "TLS server unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h
new file mode 100644
index 0000000..5bb3a37
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h	
@@ -0,0 +1,3555 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_SSL_INTERNAL_H
+#define OPENSSL_HEADER_SSL_INTERNAL_H
+
+#include <openssl_grpc/base.h>
+
+#include <stdlib.h>
+
+#include <limits>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/span.h>
+#include <openssl_grpc/ssl.h>
+#include <openssl_grpc/stack.h>
+
+#include "../crypto/err/internal.h"
+#include "../crypto/internal.h"
+
+
+#if defined(OPENSSL_WINDOWS)
+// Windows defines struct timeval in winsock2.h.
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#else
+#include <sys/time.h>
+#endif
+
+
+BSSL_NAMESPACE_BEGIN
+
+struct SSL_CONFIG;
+struct SSL_HANDSHAKE;
+struct SSL_PROTOCOL_METHOD;
+struct SSL_X509_METHOD;
+
+// C++ utilities.
+
+// New behaves like |new| but uses |OPENSSL_malloc| for memory allocation. It
+// returns nullptr on allocation error. It only implements single-object
+// allocation and not new T[n].
+//
+// Note: unlike |new|, this does not support non-public constructors.
+template <typename T, typename... Args>
+T *New(Args &&... args) {
+  void *t = OPENSSL_malloc(sizeof(T));
+  if (t == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+  return new (t) T(std::forward<Args>(args)...);
+}
+
+// Delete behaves like |delete| but uses |OPENSSL_free| to release memory.
+//
+// Note: unlike |delete| this does not support non-public destructors.
+template <typename T>
+void Delete(T *t) {
+  if (t != nullptr) {
+    t->~T();
+    OPENSSL_free(t);
+  }
+}
+
+// All types with kAllowUniquePtr set may be used with UniquePtr. Other types
+// may be C structs which require a |BORINGSSL_MAKE_DELETER| registration.
+namespace internal {
+template <typename T>
+struct DeleterImpl<T, typename std::enable_if<T::kAllowUniquePtr>::type> {
+  static void Free(T *t) { Delete(t); }
+};
+}  // namespace internal
+
+// MakeUnique behaves like |std::make_unique| but returns nullptr on allocation
+// error.
+template <typename T, typename... Args>
+UniquePtr<T> MakeUnique(Args &&... args) {
+  return UniquePtr<T>(New<T>(std::forward<Args>(args)...));
+}
+
+#if defined(BORINGSSL_ALLOW_CXX_RUNTIME)
+#define HAS_VIRTUAL_DESTRUCTOR
+#define PURE_VIRTUAL = 0
+#else
+// HAS_VIRTUAL_DESTRUCTOR should be declared in any base class which defines a
+// virtual destructor. This avoids a dependency on |_ZdlPv| and prevents the
+// class from being used with |delete|.
+#define HAS_VIRTUAL_DESTRUCTOR \
+  void operator delete(void *) { abort(); }
+
+// PURE_VIRTUAL should be used instead of = 0 when defining pure-virtual
+// functions. This avoids a dependency on |__cxa_pure_virtual| but loses
+// compile-time checking.
+#define PURE_VIRTUAL \
+  { abort(); }
+#endif
+
+// CONSTEXPR_ARRAY works around a VS 2015 bug where ranged for loops don't work
+// on constexpr arrays.
+#if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER < 1910
+#define CONSTEXPR_ARRAY const
+#else
+#define CONSTEXPR_ARRAY constexpr
+#endif
+
+// Array<T> is an owning array of elements of |T|.
+template <typename T>
+class Array {
+ public:
+  // Array's default constructor creates an empty array.
+  Array() {}
+  Array(const Array &) = delete;
+  Array(Array &&other) { *this = std::move(other); }
+
+  ~Array() { Reset(); }
+
+  Array &operator=(const Array &) = delete;
+  Array &operator=(Array &&other) {
+    Reset();
+    other.Release(&data_, &size_);
+    return *this;
+  }
+
+  const T *data() const { return data_; }
+  T *data() { return data_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  const T &operator[](size_t i) const { return data_[i]; }
+  T &operator[](size_t i) { return data_[i]; }
+
+  T *begin() { return data_; }
+  const T *cbegin() const { return data_; }
+  T *end() { return data_ + size_; }
+  const T *cend() const { return data_ + size_; }
+
+  void Reset() { Reset(nullptr, 0); }
+
+  // Reset releases the current contents of the array and takes ownership of the
+  // raw pointer supplied by the caller.
+  void Reset(T *new_data, size_t new_size) {
+    for (size_t i = 0; i < size_; i++) {
+      data_[i].~T();
+    }
+    OPENSSL_free(data_);
+    data_ = new_data;
+    size_ = new_size;
+  }
+
+  // Release releases ownership of the array to a raw pointer supplied by the
+  // caller.
+  void Release(T **out, size_t *out_size) {
+    *out = data_;
+    *out_size = size_;
+    data_ = nullptr;
+    size_ = 0;
+  }
+
+  // Init replaces the array with a newly-allocated array of |new_size|
+  // default-constructed copies of |T|. It returns true on success and false on
+  // error.
+  //
+  // Note that if |T| is a primitive type like |uint8_t|, it is uninitialized.
+  bool Init(size_t new_size) {
+    Reset();
+    if (new_size == 0) {
+      return true;
+    }
+
+    if (new_size > std::numeric_limits<size_t>::max() / sizeof(T)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return false;
+    }
+    data_ = reinterpret_cast<T *>(OPENSSL_malloc(new_size * sizeof(T)));
+    if (data_ == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    size_ = new_size;
+    for (size_t i = 0; i < size_; i++) {
+      new (&data_[i]) T;
+    }
+    return true;
+  }
+
+  // CopyFrom replaces the array with a newly-allocated copy of |in|. It returns
+  // true on success and false on error.
+  bool CopyFrom(Span<const T> in) {
+    if (!Init(in.size())) {
+      return false;
+    }
+    OPENSSL_memcpy(data_, in.data(), sizeof(T) * in.size());
+    return true;
+  }
+
+  // Shrink shrinks the stored size of the array to |new_size|. It crashes if
+  // the new size is larger. Note this does not shrink the allocation itself.
+  void Shrink(size_t new_size) {
+    if (new_size > size_) {
+      abort();
+    }
+    size_ = new_size;
+  }
+
+ private:
+  T *data_ = nullptr;
+  size_t size_ = 0;
+};
+
+// GrowableArray<T> is an array that owns elements of |T|, backed by an
+// Array<T>. When necessary, pushing will automatically trigger a resize.
+//
+// Note, for simplicity, this class currently differs from |std::vector| in that
+// |T| must be efficiently default-constructible. Allocated elements beyond the
+// end of the array are constructed and destructed.
+template <typename T>
+class GrowableArray {
+ public:
+  GrowableArray() = default;
+  GrowableArray(const GrowableArray &) = delete;
+  GrowableArray(GrowableArray &&other) { *this = std::move(other); }
+  ~GrowableArray() {}
+
+  GrowableArray &operator=(const GrowableArray &) = delete;
+  GrowableArray &operator=(GrowableArray &&other) {
+    size_ = other.size_;
+    other.size_ = 0;
+    array_ = std::move(other.array_);
+    return *this;
+  }
+
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  const T &operator[](size_t i) const { return array_[i]; }
+  T &operator[](size_t i) { return array_[i]; }
+
+  T *begin() { return array_.data(); }
+  const T *cbegin() const { return array_.data(); }
+  T *end() { return array_.data() + size_; }
+  const T *cend() const { return array_.data() + size_; }
+
+  // Push adds |elem| at the end of the internal array, growing if necessary. It
+  // returns false when allocation fails.
+  bool Push(T elem) {
+    if (!MaybeGrow()) {
+      return false;
+    }
+    array_[size_] = std::move(elem);
+    size_++;
+    return true;
+  }
+
+  // CopyFrom replaces the contents of the array with a copy of |in|. It returns
+  // true on success and false on allocation error.
+  bool CopyFrom(Span<const T> in) {
+    if (!array_.CopyFrom(in)) {
+      return false;
+    }
+    size_ = in.size();
+    return true;
+  }
+
+ private:
+  // If there is no room for one more element, creates a new backing array with
+  // double the size of the old one and copies elements over.
+  bool MaybeGrow() {
+    if (array_.size() == 0) {
+      return array_.Init(kDefaultSize);
+    }
+    // No need to grow if we have room for one more T.
+    if (size_ < array_.size()) {
+      return true;
+    }
+    // Double the array's size if it's safe to do so.
+    if (array_.size() > std::numeric_limits<size_t>::max() / 2) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return false;
+    }
+    Array<T> new_array;
+    if (!new_array.Init(array_.size() * 2)) {
+      return false;
+    }
+    for (size_t i = 0; i < array_.size(); i++) {
+      new_array[i] = std::move(array_[i]);
+    }
+    array_ = std::move(new_array);
+
+    return true;
+  }
+
+  // |size_| is the number of elements stored in this GrowableArray.
+  size_t size_ = 0;
+  // |array_| is the backing array. Note that |array_.size()| is this
+  // GrowableArray's current capacity and that |size_ <= array_.size()|.
+  Array<T> array_;
+  // |kDefaultSize| is the default initial size of the backing array.
+  static constexpr size_t kDefaultSize = 16;
+};
+
+// CBBFinishArray behaves like |CBB_finish| but stores the result in an Array.
+OPENSSL_EXPORT bool CBBFinishArray(CBB *cbb, Array<uint8_t> *out);
+
+
+// Protocol versions.
+//
+// Due to DTLS's historical wire version differences, we maintain two notions of
+// version.
+//
+// The "version" or "wire version" is the actual 16-bit value that appears on
+// the wire. It uniquely identifies a version and is also used at API
+// boundaries. The set of supported versions differs between TLS and DTLS. Wire
+// versions are opaque values and may not be compared numerically.
+//
+// The "protocol version" identifies the high-level handshake variant being
+// used. DTLS versions map to the corresponding TLS versions. Protocol versions
+// are sequential and may be compared numerically.
+
+// ssl_protocol_version_from_wire sets |*out| to the protocol version
+// corresponding to wire version |version| and returns true. If |version| is not
+// a valid TLS or DTLS version, it returns false.
+//
+// Note this simultaneously handles both DTLS and TLS. Use one of the
+// higher-level functions below for most operations.
+bool ssl_protocol_version_from_wire(uint16_t *out, uint16_t version);
+
+// ssl_get_version_range sets |*out_min_version| and |*out_max_version| to the
+// minimum and maximum enabled protocol versions, respectively.
+bool ssl_get_version_range(const SSL_HANDSHAKE *hs, uint16_t *out_min_version,
+                           uint16_t *out_max_version);
+
+// ssl_supports_version returns whether |hs| supports |version|.
+bool ssl_supports_version(SSL_HANDSHAKE *hs, uint16_t version);
+
+// ssl_method_supports_version returns whether |method| supports |version|.
+bool ssl_method_supports_version(const SSL_PROTOCOL_METHOD *method,
+                                 uint16_t version);
+
+// ssl_add_supported_versions writes the supported versions of |hs| to |cbb|, in
+// decreasing preference order.
+bool ssl_add_supported_versions(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// ssl_negotiate_version negotiates a common version based on |hs|'s preferences
+// and the peer preference list in |peer_versions|. On success, it returns true
+// and sets |*out_version| to the selected version. Otherwise, it returns false
+// and sets |*out_alert| to an alert to send.
+bool ssl_negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                           uint16_t *out_version, const CBS *peer_versions);
+
+// ssl_protocol_version returns |ssl|'s protocol version. It is an error to
+// call this function before the version is determined.
+uint16_t ssl_protocol_version(const SSL *ssl);
+
+// Cipher suites.
+
+BSSL_NAMESPACE_END
+
+struct ssl_cipher_st {
+  // name is the OpenSSL name for the cipher.
+  const char *name;
+  // standard_name is the IETF name for the cipher.
+  const char *standard_name;
+  // id is the cipher suite value bitwise OR-d with 0x03000000.
+  uint32_t id;
+
+  // algorithm_* determine the cipher suite. See constants below for the values.
+  uint32_t algorithm_mkey;
+  uint32_t algorithm_auth;
+  uint32_t algorithm_enc;
+  uint32_t algorithm_mac;
+  uint32_t algorithm_prf;
+};
+
+BSSL_NAMESPACE_BEGIN
+
+// Bits for |algorithm_mkey| (key exchange algorithm).
+#define SSL_kRSA 0x00000001u
+#define SSL_kECDHE 0x00000002u
+// SSL_kPSK is only set for plain PSK, not ECDHE_PSK.
+#define SSL_kPSK 0x00000004u
+#define SSL_kGENERIC 0x00000008u
+
+// Bits for |algorithm_auth| (server authentication).
+#define SSL_aRSA 0x00000001u
+#define SSL_aECDSA 0x00000002u
+// SSL_aPSK is set for both PSK and ECDHE_PSK.
+#define SSL_aPSK 0x00000004u
+#define SSL_aGENERIC 0x00000008u
+
+#define SSL_aCERT (SSL_aRSA | SSL_aECDSA)
+
+// Bits for |algorithm_enc| (symmetric encryption).
+#define SSL_3DES 0x00000001u
+#define SSL_AES128 0x00000002u
+#define SSL_AES256 0x00000004u
+#define SSL_AES128GCM 0x00000008u
+#define SSL_AES256GCM 0x00000010u
+#define SSL_eNULL 0x00000020u
+#define SSL_CHACHA20POLY1305 0x00000040u
+
+#define SSL_AES (SSL_AES128 | SSL_AES256 | SSL_AES128GCM | SSL_AES256GCM)
+
+// Bits for |algorithm_mac| (symmetric authentication).
+#define SSL_SHA1 0x00000001u
+// SSL_AEAD is set for all AEADs.
+#define SSL_AEAD 0x00000002u
+
+// Bits for |algorithm_prf| (handshake digest).
+#define SSL_HANDSHAKE_MAC_DEFAULT 0x1
+#define SSL_HANDSHAKE_MAC_SHA256 0x2
+#define SSL_HANDSHAKE_MAC_SHA384 0x4
+
+// SSL_MAX_MD_SIZE is size of the largest hash function used in TLS, SHA-384.
+#define SSL_MAX_MD_SIZE 48
+
+// An SSLCipherPreferenceList contains a list of SSL_CIPHERs with equal-
+// preference groups. For TLS clients, the groups are moot because the server
+// picks the cipher and groups cannot be expressed on the wire. However, for
+// servers, the equal-preference groups allow the client's preferences to be
+// partially respected. (This only has an effect with
+// SSL_OP_CIPHER_SERVER_PREFERENCE).
+//
+// The equal-preference groups are expressed by grouping SSL_CIPHERs together.
+// All elements of a group have the same priority: no ordering is expressed
+// within a group.
+//
+// The values in |ciphers| are in one-to-one correspondence with
+// |in_group_flags|. (That is, sk_SSL_CIPHER_num(ciphers) is the number of
+// bytes in |in_group_flags|.) The bytes in |in_group_flags| are either 1, to
+// indicate that the corresponding SSL_CIPHER is not the last element of a
+// group, or 0 to indicate that it is.
+//
+// For example, if |in_group_flags| contains all zeros then that indicates a
+// traditional, fully-ordered preference. Every SSL_CIPHER is the last element
+// of the group (i.e. they are all in a one-element group).
+//
+// For a more complex example, consider:
+//   ciphers:        A  B  C  D  E  F
+//   in_group_flags: 1  1  0  0  1  0
+//
+// That would express the following, order:
+//
+//    A         E
+//    B -> D -> F
+//    C
+struct SSLCipherPreferenceList {
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSLCipherPreferenceList() = default;
+  ~SSLCipherPreferenceList();
+
+  bool Init(UniquePtr<STACK_OF(SSL_CIPHER)> ciphers,
+            Span<const bool> in_group_flags);
+  bool Init(const SSLCipherPreferenceList &);
+
+  void Remove(const SSL_CIPHER *cipher);
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> ciphers;
+  bool *in_group_flags = nullptr;
+};
+
+// AllCiphers returns an array of all supported ciphers, sorted by id.
+Span<const SSL_CIPHER> AllCiphers();
+
+// ssl_cipher_get_evp_aead sets |*out_aead| to point to the correct EVP_AEAD
+// object for |cipher| protocol version |version|. It sets |*out_mac_secret_len|
+// and |*out_fixed_iv_len| to the MAC key length and fixed IV length,
+// respectively. The MAC key length is zero except for legacy block and stream
+// ciphers. It returns true on success and false on error.
+bool ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead,
+                             size_t *out_mac_secret_len,
+                             size_t *out_fixed_iv_len, const SSL_CIPHER *cipher,
+                             uint16_t version, bool is_dtls);
+
+// ssl_get_handshake_digest returns the |EVP_MD| corresponding to |version| and
+// |cipher|.
+const EVP_MD *ssl_get_handshake_digest(uint16_t version,
+                                       const SSL_CIPHER *cipher);
+
+// ssl_create_cipher_list evaluates |rule_str|. It sets |*out_cipher_list| to a
+// newly-allocated |SSLCipherPreferenceList| containing the result. It returns
+// true on success and false on failure. If |strict| is true, nonsense will be
+// rejected. If false, nonsense will be silently ignored. An empty result is
+// considered an error regardless of |strict|.
+bool ssl_create_cipher_list(UniquePtr<SSLCipherPreferenceList> *out_cipher_list,
+                            const char *rule_str, bool strict);
+
+// ssl_cipher_get_value returns the cipher suite id of |cipher|.
+uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher);
+
+// ssl_cipher_auth_mask_for_key returns the mask of cipher |algorithm_auth|
+// values suitable for use with |key| in TLS 1.2 and below.
+uint32_t ssl_cipher_auth_mask_for_key(const EVP_PKEY *key);
+
+// ssl_cipher_uses_certificate_auth returns whether |cipher| authenticates the
+// server and, optionally, the client with a certificate.
+bool ssl_cipher_uses_certificate_auth(const SSL_CIPHER *cipher);
+
+// ssl_cipher_requires_server_key_exchange returns whether |cipher| requires a
+// ServerKeyExchange message.
+//
+// This function may return false while still allowing |cipher| an optional
+// ServerKeyExchange. This is the case for plain PSK ciphers.
+bool ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher);
+
+// ssl_cipher_get_record_split_len, for TLS 1.0 CBC mode ciphers, returns the
+// length of an encrypted 1-byte record, for use in record-splitting. Otherwise
+// it returns zero.
+size_t ssl_cipher_get_record_split_len(const SSL_CIPHER *cipher);
+
+// ssl_choose_tls13_cipher returns an |SSL_CIPHER| corresponding with the best
+// available from |cipher_suites| compatible with |version| and |group_id|. It
+// returns NULL if there isn't a compatible cipher.
+const SSL_CIPHER *ssl_choose_tls13_cipher(CBS cipher_suites, uint16_t version,
+                                          uint16_t group_id);
+
+
+// Transcript layer.
+
+// SSLTranscript maintains the handshake transcript as a combination of a
+// buffer and running hash.
+class SSLTranscript {
+ public:
+  SSLTranscript();
+  ~SSLTranscript();
+
+  // Init initializes the handshake transcript. If called on an existing
+  // transcript, it resets the transcript and hash. It returns true on success
+  // and false on failure.
+  bool Init();
+
+  // InitHash initializes the handshake hash based on the PRF and contents of
+  // the handshake transcript. Subsequent calls to |Update| will update the
+  // rolling hash. It returns one on success and zero on failure. It is an error
+  // to call this function after the handshake buffer is released.
+  bool InitHash(uint16_t version, const SSL_CIPHER *cipher);
+
+  // UpdateForHelloRetryRequest resets the rolling hash with the
+  // HelloRetryRequest construction. It returns true on success and false on
+  // failure. It is an error to call this function before the handshake buffer
+  // is released.
+  bool UpdateForHelloRetryRequest();
+
+  // CopyToHashContext initializes |ctx| with |digest| and the data thus far in
+  // the transcript. It returns true on success and false on failure. If the
+  // handshake buffer is still present, |digest| may be any supported digest.
+  // Otherwise, |digest| must match the transcript hash.
+  bool CopyToHashContext(EVP_MD_CTX *ctx, const EVP_MD *digest);
+
+  Span<const uint8_t> buffer() {
+    return MakeConstSpan(reinterpret_cast<const uint8_t *>(buffer_->data),
+                         buffer_->length);
+  }
+
+  // FreeBuffer releases the handshake buffer. Subsequent calls to
+  // |Update| will not update the handshake buffer.
+  void FreeBuffer();
+
+  // DigestLen returns the length of the PRF hash.
+  size_t DigestLen() const;
+
+  // Digest returns the PRF hash. For TLS 1.1 and below, this is
+  // |EVP_md5_sha1|.
+  const EVP_MD *Digest() const;
+
+  // Update adds |in| to the handshake buffer and handshake hash, whichever is
+  // enabled. It returns true on success and false on failure.
+  bool Update(Span<const uint8_t> in);
+
+  // GetHash writes the handshake hash to |out| which must have room for at
+  // least |DigestLen| bytes. On success, it returns true and sets |*out_len| to
+  // the number of bytes written. Otherwise, it returns false.
+  bool GetHash(uint8_t *out, size_t *out_len);
+
+  // GetFinishedMAC computes the MAC for the Finished message into the bytes
+  // pointed by |out| and writes the number of bytes to |*out_len|. |out| must
+  // have room for |EVP_MAX_MD_SIZE| bytes. It returns true on success and false
+  // on failure.
+  bool GetFinishedMAC(uint8_t *out, size_t *out_len, const SSL_SESSION *session,
+                      bool from_server);
+
+ private:
+  // buffer_, if non-null, contains the handshake transcript.
+  UniquePtr<BUF_MEM> buffer_;
+  // hash, if initialized with an |EVP_MD|, maintains the handshake hash.
+  ScopedEVP_MD_CTX hash_;
+};
+
+// tls1_prf computes the PRF function for |ssl|. It fills |out|, using |secret|
+// as the secret and |label| as the label. |seed1| and |seed2| are concatenated
+// to form the seed parameter. It returns true on success and false on failure.
+bool tls1_prf(const EVP_MD *digest, Span<uint8_t> out,
+              Span<const uint8_t> secret, Span<const char> label,
+              Span<const uint8_t> seed1, Span<const uint8_t> seed2);
+
+
+// Encryption layer.
+
+// SSLAEADContext contains information about an AEAD that is being used to
+// encrypt an SSL connection.
+class SSLAEADContext {
+ public:
+  SSLAEADContext(uint16_t version, bool is_dtls, const SSL_CIPHER *cipher);
+  ~SSLAEADContext();
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSLAEADContext(const SSLAEADContext &&) = delete;
+  SSLAEADContext &operator=(const SSLAEADContext &&) = delete;
+
+  // CreateNullCipher creates an |SSLAEADContext| for the null cipher.
+  static UniquePtr<SSLAEADContext> CreateNullCipher(bool is_dtls);
+
+  // Create creates an |SSLAEADContext| using the supplied key material. It
+  // returns nullptr on error. Only one of |Open| or |Seal| may be used with the
+  // resulting object, depending on |direction|. |version| is the normalized
+  // protocol version, so DTLS 1.0 is represented as 0x0301, not 0xffef.
+  static UniquePtr<SSLAEADContext> Create(enum evp_aead_direction_t direction,
+                                          uint16_t version, bool is_dtls,
+                                          const SSL_CIPHER *cipher,
+                                          Span<const uint8_t> enc_key,
+                                          Span<const uint8_t> mac_key,
+                                          Span<const uint8_t> fixed_iv);
+
+  // CreatePlaceholderForQUIC creates a placeholder |SSLAEADContext| for the
+  // given cipher and version. The resulting object can be queried for various
+  // properties but cannot encrypt or decrypt data.
+  static UniquePtr<SSLAEADContext> CreatePlaceholderForQUIC(
+      uint16_t version, const SSL_CIPHER *cipher);
+
+  // SetVersionIfNullCipher sets the version the SSLAEADContext for the null
+  // cipher, to make version-specific determinations in the record layer prior
+  // to a cipher being selected.
+  void SetVersionIfNullCipher(uint16_t version);
+
+  // ProtocolVersion returns the protocol version associated with this
+  // SSLAEADContext. It can only be called once |version_| has been set to a
+  // valid value.
+  uint16_t ProtocolVersion() const;
+
+  // RecordVersion returns the record version that should be used with this
+  // SSLAEADContext for record construction and crypto.
+  uint16_t RecordVersion() const;
+
+  const SSL_CIPHER *cipher() const { return cipher_; }
+
+  // is_null_cipher returns true if this is the null cipher.
+  bool is_null_cipher() const { return !cipher_; }
+
+  // ExplicitNonceLen returns the length of the explicit nonce.
+  size_t ExplicitNonceLen() const;
+
+  // MaxOverhead returns the maximum overhead of calling |Seal|.
+  size_t MaxOverhead() const;
+
+  // SuffixLen calculates the suffix length written by |SealScatter| and writes
+  // it to |*out_suffix_len|. It returns true on success and false on error.
+  // |in_len| and |extra_in_len| should equal the argument of the same names
+  // passed to |SealScatter|.
+  bool SuffixLen(size_t *out_suffix_len, size_t in_len,
+                 size_t extra_in_len) const;
+
+  // CiphertextLen calculates the total ciphertext length written by
+  // |SealScatter| and writes it to |*out_len|. It returns true on success and
+  // false on error. |in_len| and |extra_in_len| should equal the argument of
+  // the same names passed to |SealScatter|.
+  bool CiphertextLen(size_t *out_len, size_t in_len, size_t extra_in_len) const;
+
+  // Open authenticates and decrypts |in| in-place. On success, it sets |*out|
+  // to the plaintext in |in| and returns true.  Otherwise, it returns
+  // false. The output will always be |ExplicitNonceLen| bytes ahead of |in|.
+  bool Open(Span<uint8_t> *out, uint8_t type, uint16_t record_version,
+            const uint8_t seqnum[8], Span<const uint8_t> header,
+            Span<uint8_t> in);
+
+  // Seal encrypts and authenticates |in_len| bytes from |in| and writes the
+  // result to |out|. It returns true on success and false on error.
+  //
+  // If |in| and |out| alias then |out| + |ExplicitNonceLen| must be == |in|.
+  bool Seal(uint8_t *out, size_t *out_len, size_t max_out, uint8_t type,
+            uint16_t record_version, const uint8_t seqnum[8],
+            Span<const uint8_t> header, const uint8_t *in, size_t in_len);
+
+  // SealScatter encrypts and authenticates |in_len| bytes from |in| and splits
+  // the result between |out_prefix|, |out| and |out_suffix|. It returns one on
+  // success and zero on error.
+  //
+  // On successful return, exactly |ExplicitNonceLen| bytes are written to
+  // |out_prefix|, |in_len| bytes to |out|, and |SuffixLen| bytes to
+  // |out_suffix|.
+  //
+  // |extra_in| may point to an additional plaintext buffer. If present,
+  // |extra_in_len| additional bytes are encrypted and authenticated, and the
+  // ciphertext is written to the beginning of |out_suffix|. |SuffixLen| should
+  // be used to size |out_suffix| accordingly.
+  //
+  // If |in| and |out| alias then |out| must be == |in|. Other arguments may not
+  // alias anything.
+  bool SealScatter(uint8_t *out_prefix, uint8_t *out, uint8_t *out_suffix,
+                   uint8_t type, uint16_t record_version,
+                   const uint8_t seqnum[8], Span<const uint8_t> header,
+                   const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+                   size_t extra_in_len);
+
+  bool GetIV(const uint8_t **out_iv, size_t *out_iv_len) const;
+
+ private:
+  // GetAdditionalData returns the additional data, writing into |storage| if
+  // necessary.
+  Span<const uint8_t> GetAdditionalData(uint8_t storage[13], uint8_t type,
+                                        uint16_t record_version,
+                                        const uint8_t seqnum[8],
+                                        size_t plaintext_len,
+                                        Span<const uint8_t> header);
+
+  const SSL_CIPHER *cipher_;
+  ScopedEVP_AEAD_CTX ctx_;
+  // fixed_nonce_ contains any bytes of the nonce that are fixed for all
+  // records.
+  uint8_t fixed_nonce_[12];
+  uint8_t fixed_nonce_len_ = 0, variable_nonce_len_ = 0;
+  // version_ is the wire version that should be used with this AEAD.
+  uint16_t version_;
+  // is_dtls_ is whether DTLS is being used with this AEAD.
+  bool is_dtls_;
+  // variable_nonce_included_in_record_ is true if the variable nonce
+  // for a record is included as a prefix before the ciphertext.
+  bool variable_nonce_included_in_record_ : 1;
+  // random_variable_nonce_ is true if the variable nonce is
+  // randomly generated, rather than derived from the sequence
+  // number.
+  bool random_variable_nonce_ : 1;
+  // xor_fixed_nonce_ is true if the fixed nonce should be XOR'd into the
+  // variable nonce rather than prepended.
+  bool xor_fixed_nonce_ : 1;
+  // omit_length_in_ad_ is true if the length should be omitted in the
+  // AEAD's ad parameter.
+  bool omit_length_in_ad_ : 1;
+  // ad_is_header_ is true if the AEAD's ad parameter is the record header.
+  bool ad_is_header_ : 1;
+};
+
+
+// DTLS replay bitmap.
+
+// DTLS1_BITMAP maintains a sliding window of 64 sequence numbers to detect
+// replayed packets. It should be initialized by zeroing every field.
+struct DTLS1_BITMAP {
+  // map is a bit mask of the last 64 sequence numbers. Bit
+  // |1<<i| corresponds to |max_seq_num - i|.
+  uint64_t map = 0;
+  // max_seq_num is the largest sequence number seen so far as a 64-bit
+  // integer.
+  uint64_t max_seq_num = 0;
+};
+
+
+// Record layer.
+
+// ssl_record_sequence_update increments the sequence number in |seq|. It
+// returns true on success and false on wraparound.
+bool ssl_record_sequence_update(uint8_t *seq, size_t seq_len);
+
+// ssl_record_prefix_len returns the length of the prefix before the ciphertext
+// of a record for |ssl|.
+//
+// TODO(davidben): Expose this as part of public API once the high-level
+// buffer-free APIs are available.
+size_t ssl_record_prefix_len(const SSL *ssl);
+
+enum ssl_open_record_t {
+  ssl_open_record_success,
+  ssl_open_record_discard,
+  ssl_open_record_partial,
+  ssl_open_record_close_notify,
+  ssl_open_record_error,
+};
+
+// tls_open_record decrypts a record from |in| in-place.
+//
+// If the input did not contain a complete record, it returns
+// |ssl_open_record_partial|. It sets |*out_consumed| to the total number of
+// bytes necessary. It is guaranteed that a successful call to |tls_open_record|
+// will consume at least that many bytes.
+//
+// Otherwise, it sets |*out_consumed| to the number of bytes of input
+// consumed. Note that input may be consumed on all return codes if a record was
+// decrypted.
+//
+// On success, it returns |ssl_open_record_success|. It sets |*out_type| to the
+// record type and |*out| to the record body in |in|. Note that |*out| may be
+// empty.
+//
+// If a record was successfully processed but should be discarded, it returns
+// |ssl_open_record_discard|.
+//
+// If a record was successfully processed but is a close_notify, it returns
+// |ssl_open_record_close_notify|.
+//
+// On failure or fatal alert, it returns |ssl_open_record_error| and sets
+// |*out_alert| to an alert to emit, or zero if no alert should be emitted.
+enum ssl_open_record_t tls_open_record(SSL *ssl, uint8_t *out_type,
+                                       Span<uint8_t> *out, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in);
+
+// dtls_open_record implements |tls_open_record| for DTLS. It only returns
+// |ssl_open_record_partial| if |in| was empty and sets |*out_consumed| to
+// zero. The caller should read one packet and try again.
+enum ssl_open_record_t dtls_open_record(SSL *ssl, uint8_t *out_type,
+                                        Span<uint8_t> *out,
+                                        size_t *out_consumed,
+                                        uint8_t *out_alert, Span<uint8_t> in);
+
+// ssl_seal_align_prefix_len returns the length of the prefix before the start
+// of the bulk of the ciphertext when sealing a record with |ssl|. Callers may
+// use this to align buffers.
+//
+// Note when TLS 1.0 CBC record-splitting is enabled, this includes the one byte
+// record and is the offset into second record's ciphertext. Thus sealing a
+// small record may result in a smaller output than this value.
+//
+// TODO(davidben): Is this alignment valuable? Record-splitting makes this a
+// mess.
+size_t ssl_seal_align_prefix_len(const SSL *ssl);
+
+// tls_seal_record seals a new record of type |type| and body |in| and writes it
+// to |out|. At most |max_out| bytes will be written. It returns true on success
+// and false on error. If enabled, |tls_seal_record| implements TLS 1.0 CBC
+// 1/n-1 record splitting and may write two records concatenated.
+//
+// For a large record, the bulk of the ciphertext will begin
+// |ssl_seal_align_prefix_len| bytes into out. Aligning |out| appropriately may
+// improve performance. It writes at most |in_len| + |SSL_max_seal_overhead|
+// bytes to |out|.
+//
+// |in| and |out| may not alias.
+bool tls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                     uint8_t type, const uint8_t *in, size_t in_len);
+
+enum dtls1_use_epoch_t {
+  dtls1_use_previous_epoch,
+  dtls1_use_current_epoch,
+};
+
+// dtls_max_seal_overhead returns the maximum overhead, in bytes, of sealing a
+// record.
+size_t dtls_max_seal_overhead(const SSL *ssl, enum dtls1_use_epoch_t use_epoch);
+
+// dtls_seal_prefix_len returns the number of bytes of prefix to reserve in
+// front of the plaintext when sealing a record in-place.
+size_t dtls_seal_prefix_len(const SSL *ssl, enum dtls1_use_epoch_t use_epoch);
+
+// dtls_seal_record implements |tls_seal_record| for DTLS. |use_epoch| selects
+// which epoch's cipher state to use. Unlike |tls_seal_record|, |in| and |out|
+// may alias but, if they do, |in| must be exactly |dtls_seal_prefix_len| bytes
+// ahead of |out|.
+bool dtls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                      uint8_t type, const uint8_t *in, size_t in_len,
+                      enum dtls1_use_epoch_t use_epoch);
+
+// ssl_process_alert processes |in| as an alert and updates |ssl|'s shutdown
+// state. It returns one of |ssl_open_record_discard|, |ssl_open_record_error|,
+// |ssl_open_record_close_notify|, or |ssl_open_record_fatal_alert| as
+// appropriate.
+enum ssl_open_record_t ssl_process_alert(SSL *ssl, uint8_t *out_alert,
+                                         Span<const uint8_t> in);
+
+
+// Private key operations.
+
+// ssl_has_private_key returns whether |hs| has a private key configured.
+bool ssl_has_private_key(const SSL_HANDSHAKE *hs);
+
+// ssl_private_key_* perform the corresponding operation on
+// |SSL_PRIVATE_KEY_METHOD|. If there is a custom private key configured, they
+// call the corresponding function or |complete| depending on whether there is a
+// pending operation. Otherwise, they implement the operation with
+// |EVP_PKEY|.
+
+enum ssl_private_key_result_t ssl_private_key_sign(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, size_t max_out,
+    uint16_t sigalg, Span<const uint8_t> in);
+
+enum ssl_private_key_result_t ssl_private_key_decrypt(SSL_HANDSHAKE *hs,
+                                                      uint8_t *out,
+                                                      size_t *out_len,
+                                                      size_t max_out,
+                                                      Span<const uint8_t> in);
+
+// ssl_private_key_supports_signature_algorithm returns whether |hs|'s private
+// key supports |sigalg|.
+bool ssl_private_key_supports_signature_algorithm(SSL_HANDSHAKE *hs,
+                                                  uint16_t sigalg);
+
+// ssl_public_key_verify verifies that the |signature| is valid for the public
+// key |pkey| and input |in|, using the signature algorithm |sigalg|.
+bool ssl_public_key_verify(SSL *ssl, Span<const uint8_t> signature,
+                           uint16_t sigalg, EVP_PKEY *pkey,
+                           Span<const uint8_t> in);
+
+
+// Key shares.
+
+// SSLKeyShare abstracts over Diffie-Hellman-like key exchanges.
+class SSLKeyShare {
+ public:
+  virtual ~SSLKeyShare() {}
+  static constexpr bool kAllowUniquePtr = true;
+  HAS_VIRTUAL_DESTRUCTOR
+
+  // Create returns a SSLKeyShare instance for use with group |group_id| or
+  // nullptr on error.
+  static UniquePtr<SSLKeyShare> Create(uint16_t group_id);
+
+  // Create deserializes an SSLKeyShare instance previously serialized by
+  // |Serialize|.
+  static UniquePtr<SSLKeyShare> Create(CBS *in);
+
+  // GroupID returns the group ID.
+  virtual uint16_t GroupID() const PURE_VIRTUAL;
+
+  // Offer generates a keypair and writes the public value to
+  // |out_public_key|. It returns true on success and false on error.
+  virtual bool Offer(CBB *out_public_key) PURE_VIRTUAL;
+
+  // Accept performs a key exchange against the |peer_key| generated by |Offer|.
+  // On success, it returns true, writes the public value to |out_public_key|,
+  // and sets |*out_secret| to the shared secret. On failure, it returns false
+  // and sets |*out_alert| to an alert to send to the peer.
+  //
+  // The default implementation calls |Offer| and then |Finish|, assuming a key
+  // exchange protocol where the peers are symmetric.
+  virtual bool Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+                      uint8_t *out_alert, Span<const uint8_t> peer_key);
+
+  // Finish performs a key exchange against the |peer_key| generated by
+  // |Accept|. On success, it returns true and sets |*out_secret| to the shared
+  // secret. On failure, it returns false and sets |*out_alert| to an alert to
+  // send to the peer.
+  virtual bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+                      Span<const uint8_t> peer_key) PURE_VIRTUAL;
+
+  // Serialize writes the state of the key exchange to |out|, returning true if
+  // successful and false otherwise.
+  virtual bool Serialize(CBB *out) { return false; }
+
+  // Deserialize initializes the state of the key exchange from |in|, returning
+  // true if successful and false otherwise.  It is called by |Create|.
+  virtual bool Deserialize(CBS *in) { return false; }
+};
+
+struct NamedGroup {
+  int nid;
+  uint16_t group_id;
+  const char name[8], alias[11];
+};
+
+// NamedGroups returns all supported groups.
+Span<const NamedGroup> NamedGroups();
+
+// ssl_nid_to_group_id looks up the group corresponding to |nid|. On success, it
+// sets |*out_group_id| to the group ID and returns true. Otherwise, it returns
+// false.
+bool ssl_nid_to_group_id(uint16_t *out_group_id, int nid);
+
+// ssl_name_to_group_id looks up the group corresponding to the |name| string of
+// length |len|. On success, it sets |*out_group_id| to the group ID and returns
+// true. Otherwise, it returns false.
+bool ssl_name_to_group_id(uint16_t *out_group_id, const char *name, size_t len);
+
+
+// Handshake messages.
+
+struct SSLMessage {
+  bool is_v2_hello;
+  uint8_t type;
+  CBS body;
+  // raw is the entire serialized handshake message, including the TLS or DTLS
+  // message header.
+  CBS raw;
+};
+
+// SSL_MAX_HANDSHAKE_FLIGHT is the number of messages, including
+// ChangeCipherSpec, in the longest handshake flight. Currently this is the
+// client's second leg in a full handshake when client certificates, NPN, and
+// Channel ID, are all enabled.
+#define SSL_MAX_HANDSHAKE_FLIGHT 7
+
+extern const uint8_t kHelloRetryRequest[SSL3_RANDOM_SIZE];
+extern const uint8_t kTLS12DowngradeRandom[8];
+extern const uint8_t kTLS13DowngradeRandom[8];
+extern const uint8_t kJDK11DowngradeRandom[8];
+
+// ssl_max_handshake_message_len returns the maximum number of bytes permitted
+// in a handshake message for |ssl|.
+size_t ssl_max_handshake_message_len(const SSL *ssl);
+
+// tls_can_accept_handshake_data returns whether |ssl| is able to accept more
+// data into handshake buffer.
+bool tls_can_accept_handshake_data(const SSL *ssl, uint8_t *out_alert);
+
+// tls_has_unprocessed_handshake_data returns whether there is buffered
+// handshake data that has not been consumed by |get_message|.
+bool tls_has_unprocessed_handshake_data(const SSL *ssl);
+
+// tls_append_handshake_data appends |data| to the handshake buffer. It returns
+// true on success and false on allocation failure.
+bool tls_append_handshake_data(SSL *ssl, Span<const uint8_t> data);
+
+// dtls_has_unprocessed_handshake_data behaves like
+// |tls_has_unprocessed_handshake_data| for DTLS.
+bool dtls_has_unprocessed_handshake_data(const SSL *ssl);
+
+// tls_flush_pending_hs_data flushes any handshake plaintext data.
+bool tls_flush_pending_hs_data(SSL *ssl);
+
+struct DTLS_OUTGOING_MESSAGE {
+  DTLS_OUTGOING_MESSAGE() {}
+  DTLS_OUTGOING_MESSAGE(const DTLS_OUTGOING_MESSAGE &) = delete;
+  DTLS_OUTGOING_MESSAGE &operator=(const DTLS_OUTGOING_MESSAGE &) = delete;
+  ~DTLS_OUTGOING_MESSAGE() { Clear(); }
+
+  void Clear();
+
+  uint8_t *data = nullptr;
+  uint32_t len = 0;
+  uint16_t epoch = 0;
+  bool is_ccs = false;
+};
+
+// dtls_clear_outgoing_messages releases all buffered outgoing messages.
+void dtls_clear_outgoing_messages(SSL *ssl);
+
+
+// Callbacks.
+
+// ssl_do_info_callback calls |ssl|'s info callback, if set.
+void ssl_do_info_callback(const SSL *ssl, int type, int value);
+
+// ssl_do_msg_callback calls |ssl|'s message callback, if set.
+void ssl_do_msg_callback(const SSL *ssl, int is_write, int content_type,
+                         Span<const uint8_t> in);
+
+
+// Transport buffers.
+
+class SSLBuffer {
+ public:
+  SSLBuffer() {}
+  ~SSLBuffer() { Clear(); }
+
+  SSLBuffer(const SSLBuffer &) = delete;
+  SSLBuffer &operator=(const SSLBuffer &) = delete;
+
+  uint8_t *data() { return buf_ + offset_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+  size_t cap() const { return cap_; }
+
+  Span<uint8_t> span() { return MakeSpan(data(), size()); }
+
+  Span<uint8_t> remaining() {
+    return MakeSpan(data() + size(), cap() - size());
+  }
+
+  // Clear releases the buffer.
+  void Clear();
+
+  // EnsureCap ensures the buffer has capacity at least |new_cap|, aligned such
+  // that data written after |header_len| is aligned to a
+  // |SSL3_ALIGN_PAYLOAD|-byte boundary. It returns true on success and false
+  // on error.
+  bool EnsureCap(size_t header_len, size_t new_cap);
+
+  // DidWrite extends the buffer by |len|. The caller must have filled in to
+  // this point.
+  void DidWrite(size_t len);
+
+  // Consume consumes |len| bytes from the front of the buffer.  The memory
+  // consumed will remain valid until the next call to |DiscardConsumed| or
+  // |Clear|.
+  void Consume(size_t len);
+
+  // DiscardConsumed discards the consumed bytes from the buffer. If the buffer
+  // is now empty, it releases memory used by it.
+  void DiscardConsumed();
+
+ private:
+  // buf_ is the memory allocated for this buffer.
+  uint8_t *buf_ = nullptr;
+  // offset_ is the offset into |buf_| which the buffer contents start at.
+  uint16_t offset_ = 0;
+  // size_ is the size of the buffer contents from |buf_| + |offset_|.
+  uint16_t size_ = 0;
+  // cap_ is how much memory beyond |buf_| + |offset_| is available.
+  uint16_t cap_ = 0;
+  // inline_buf_ is a static buffer for short reads.
+  uint8_t inline_buf_[SSL3_RT_HEADER_LENGTH];
+  // buf_allocated_ is true if |buf_| points to allocated data and must be freed
+  // or false if it points into |inline_buf_|.
+  bool buf_allocated_ = false;
+};
+
+// ssl_read_buffer_extend_to extends the read buffer to the desired length. For
+// TLS, it reads to the end of the buffer until the buffer is |len| bytes
+// long. For DTLS, it reads a new packet and ignores |len|. It returns one on
+// success, zero on EOF, and a negative number on error.
+//
+// It is an error to call |ssl_read_buffer_extend_to| in DTLS when the buffer is
+// non-empty.
+int ssl_read_buffer_extend_to(SSL *ssl, size_t len);
+
+// ssl_handle_open_record handles the result of passing |ssl->s3->read_buffer|
+// to a record-processing function. If |ret| is a success or if the caller
+// should retry, it returns one and sets |*out_retry|. Otherwise, it returns <=
+// 0.
+int ssl_handle_open_record(SSL *ssl, bool *out_retry, ssl_open_record_t ret,
+                           size_t consumed, uint8_t alert);
+
+// ssl_write_buffer_flush flushes the write buffer to the transport. It returns
+// one on success and <= 0 on error. For DTLS, whether or not the write
+// succeeds, the write buffer will be cleared.
+int ssl_write_buffer_flush(SSL *ssl);
+
+
+// Certificate functions.
+
+// ssl_has_certificate returns whether a certificate and private key are
+// configured.
+bool ssl_has_certificate(const SSL_HANDSHAKE *hs);
+
+// ssl_parse_cert_chain parses a certificate list from |cbs| in the format used
+// by a TLS Certificate message. On success, it advances |cbs| and returns
+// true. Otherwise, it returns false and sets |*out_alert| to an alert to send
+// to the peer.
+//
+// If the list is non-empty then |*out_chain| and |*out_pubkey| will be set to
+// the certificate chain and the leaf certificate's public key
+// respectively. Otherwise, both will be set to nullptr.
+//
+// If the list is non-empty and |out_leaf_sha256| is non-NULL, it writes the
+// SHA-256 hash of the leaf to |out_leaf_sha256|.
+bool ssl_parse_cert_chain(uint8_t *out_alert,
+                          UniquePtr<STACK_OF(CRYPTO_BUFFER)> *out_chain,
+                          UniquePtr<EVP_PKEY> *out_pubkey,
+                          uint8_t *out_leaf_sha256, CBS *cbs,
+                          CRYPTO_BUFFER_POOL *pool);
+
+// ssl_add_cert_chain adds |hs->ssl|'s certificate chain to |cbb| in the format
+// used by a TLS Certificate message. If there is no certificate chain, it emits
+// an empty certificate list. It returns true on success and false on error.
+bool ssl_add_cert_chain(SSL_HANDSHAKE *hs, CBB *cbb);
+
+enum ssl_key_usage_t {
+  key_usage_digital_signature = 0,
+  key_usage_encipherment = 2,
+};
+
+// ssl_cert_check_key_usage parses the DER-encoded, X.509 certificate in |in|
+// and returns true if doesn't specify a key usage or, if it does, if it
+// includes |bit|. Otherwise it pushes to the error queue and returns false.
+bool ssl_cert_check_key_usage(const CBS *in, enum ssl_key_usage_t bit);
+
+// ssl_cert_parse_pubkey extracts the public key from the DER-encoded, X.509
+// certificate in |in|. It returns an allocated |EVP_PKEY| or else returns
+// nullptr and pushes to the error queue.
+UniquePtr<EVP_PKEY> ssl_cert_parse_pubkey(const CBS *in);
+
+// ssl_parse_client_CA_list parses a CA list from |cbs| in the format used by a
+// TLS CertificateRequest message. On success, it returns a newly-allocated
+// |CRYPTO_BUFFER| list and advances |cbs|. Otherwise, it returns nullptr and
+// sets |*out_alert| to an alert to send to the peer.
+UniquePtr<STACK_OF(CRYPTO_BUFFER)> ssl_parse_client_CA_list(SSL *ssl,
+                                                            uint8_t *out_alert,
+                                                            CBS *cbs);
+
+// ssl_has_client_CAs returns there are configured CAs.
+bool ssl_has_client_CAs(const SSL_CONFIG *cfg);
+
+// ssl_add_client_CA_list adds the configured CA list to |cbb| in the format
+// used by a TLS CertificateRequest message. It returns true on success and
+// false on error.
+bool ssl_add_client_CA_list(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// ssl_check_leaf_certificate returns one if |pkey| and |leaf| are suitable as
+// a server's leaf certificate for |hs|. Otherwise, it returns zero and pushes
+// an error on the error queue.
+bool ssl_check_leaf_certificate(SSL_HANDSHAKE *hs, EVP_PKEY *pkey,
+                               const CRYPTO_BUFFER *leaf);
+
+// ssl_on_certificate_selected is called once the certificate has been selected.
+// It finalizes the certificate and initializes |hs->local_pubkey|. It returns
+// true on success and false on error.
+bool ssl_on_certificate_selected(SSL_HANDSHAKE *hs);
+
+
+// TLS 1.3 key derivation.
+
+// tls13_init_key_schedule initializes the handshake hash and key derivation
+// state, and incorporates the PSK. The cipher suite and PRF hash must have been
+// selected at this point. It returns true on success and false on error.
+bool tls13_init_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk);
+
+// tls13_init_early_key_schedule initializes the handshake hash and key
+// derivation state from the resumption secret and incorporates the PSK to
+// derive the early secrets. It returns one on success and zero on error.
+bool tls13_init_early_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk);
+
+// tls13_advance_key_schedule incorporates |in| into the key schedule with
+// HKDF-Extract. It returns true on success and false on error.
+bool tls13_advance_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> in);
+
+// tls13_set_traffic_key sets the read or write traffic keys to
+// |traffic_secret|. It returns true on success and false on error.
+bool tls13_set_traffic_key(SSL *ssl, enum ssl_encryption_level_t level,
+                           enum evp_aead_direction_t direction,
+                           Span<const uint8_t> traffic_secret);
+
+// tls13_derive_early_secret derives the early traffic secret. It returns true
+// on success and false on error. Unlike with other traffic secrets, this
+// function does not pass the keys to QUIC. Call
+// |tls13_set_early_secret_for_quic| to do so. This is done to due to an
+// ordering complication around resolving HelloRetryRequest on the server.
+bool tls13_derive_early_secret(SSL_HANDSHAKE *hs);
+
+// tls13_set_early_secret_for_quic passes the early traffic secrets, as
+// derived by |tls13_derive_early_secret|, to QUIC. It returns true on success
+// and false on error.
+bool tls13_set_early_secret_for_quic(SSL_HANDSHAKE *hs);
+
+// tls13_derive_handshake_secrets derives the handshake traffic secret. It
+// returns true on success and false on error.
+bool tls13_derive_handshake_secrets(SSL_HANDSHAKE *hs);
+
+// tls13_rotate_traffic_key derives the next read or write traffic secret. It
+// returns true on success and false on error.
+bool tls13_rotate_traffic_key(SSL *ssl, enum evp_aead_direction_t direction);
+
+// tls13_derive_application_secrets derives the initial application data traffic
+// and exporter secrets based on the handshake transcripts and |master_secret|.
+// It returns true on success and false on error.
+bool tls13_derive_application_secrets(SSL_HANDSHAKE *hs);
+
+// tls13_derive_resumption_secret derives the |resumption_secret|.
+bool tls13_derive_resumption_secret(SSL_HANDSHAKE *hs);
+
+// tls13_export_keying_material provides an exporter interface to use the
+// |exporter_secret|.
+bool tls13_export_keying_material(SSL *ssl, Span<uint8_t> out,
+                                  Span<const uint8_t> secret,
+                                  Span<const char> label,
+                                  Span<const uint8_t> context);
+
+// tls13_finished_mac calculates the MAC of the handshake transcript to verify
+// the integrity of the Finished message, and stores the result in |out| and
+// length in |out_len|. |is_server| is true if this is for the Server Finished
+// and false for the Client Finished.
+bool tls13_finished_mac(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len,
+                        bool is_server);
+
+// tls13_derive_session_psk calculates the PSK for this session based on the
+// resumption master secret and |nonce|. It returns true on success, and false
+// on failure.
+bool tls13_derive_session_psk(SSL_SESSION *session, Span<const uint8_t> nonce);
+
+// tls13_write_psk_binder calculates the PSK binder value and replaces the last
+// bytes of |msg| with the resulting value. It returns true on success, and
+// false on failure.
+bool tls13_write_psk_binder(SSL_HANDSHAKE *hs, Span<uint8_t> msg);
+
+// tls13_verify_psk_binder verifies that the handshake transcript, truncated up
+// to the binders has a valid signature using the value of |session|'s
+// resumption secret. It returns true on success, and false on failure.
+bool tls13_verify_psk_binder(SSL_HANDSHAKE *hs, SSL_SESSION *session,
+                             const SSLMessage &msg, CBS *binders);
+
+
+// Handshake functions.
+
+enum ssl_hs_wait_t {
+  ssl_hs_error,
+  ssl_hs_ok,
+  ssl_hs_read_server_hello,
+  ssl_hs_read_message,
+  ssl_hs_flush,
+  ssl_hs_certificate_selection_pending,
+  ssl_hs_handoff,
+  ssl_hs_handback,
+  ssl_hs_x509_lookup,
+  ssl_hs_channel_id_lookup,
+  ssl_hs_private_key_operation,
+  ssl_hs_pending_session,
+  ssl_hs_pending_ticket,
+  ssl_hs_early_return,
+  ssl_hs_early_data_rejected,
+  ssl_hs_read_end_of_early_data,
+  ssl_hs_read_change_cipher_spec,
+  ssl_hs_certificate_verify,
+};
+
+enum ssl_grease_index_t {
+  ssl_grease_cipher = 0,
+  ssl_grease_group,
+  ssl_grease_extension1,
+  ssl_grease_extension2,
+  ssl_grease_version,
+  ssl_grease_ticket_extension,
+  ssl_grease_last_index = ssl_grease_ticket_extension,
+};
+
+enum tls12_server_hs_state_t {
+  state12_start_accept = 0,
+  state12_read_client_hello,
+  state12_select_certificate,
+  state12_tls13,
+  state12_select_parameters,
+  state12_send_server_hello,
+  state12_send_server_certificate,
+  state12_send_server_key_exchange,
+  state12_send_server_hello_done,
+  state12_read_client_certificate,
+  state12_verify_client_certificate,
+  state12_read_client_key_exchange,
+  state12_read_client_certificate_verify,
+  state12_read_change_cipher_spec,
+  state12_process_change_cipher_spec,
+  state12_read_next_proto,
+  state12_read_channel_id,
+  state12_read_client_finished,
+  state12_send_server_finished,
+  state12_finish_server_handshake,
+  state12_done,
+};
+
+enum tls13_server_hs_state_t {
+  state13_select_parameters = 0,
+  state13_select_session,
+  state13_send_hello_retry_request,
+  state13_read_second_client_hello,
+  state13_send_server_hello,
+  state13_send_server_certificate_verify,
+  state13_send_server_finished,
+  state13_read_second_client_flight,
+  state13_process_end_of_early_data,
+  state13_read_client_certificate,
+  state13_read_client_certificate_verify,
+  state13_read_channel_id,
+  state13_read_client_finished,
+  state13_send_new_session_ticket,
+  state13_done,
+};
+
+// handback_t lists the points in the state machine where a handback can occur.
+// These are the different points at which key material is no longer needed.
+enum handback_t {
+  handback_after_session_resumption,
+  handback_after_ecdhe,
+  handback_after_handshake,
+  handback_tls13,
+};
+
+
+// Delegated credentials.
+
+// This structure stores a delegated credential (DC) as defined by
+// draft-ietf-tls-subcerts-03.
+struct DC {
+  static constexpr bool kAllowUniquePtr = true;
+  ~DC();
+
+  // Dup returns a copy of this DC and takes references to |raw| and |pkey|.
+  UniquePtr<DC> Dup();
+
+  // Parse parses the delegated credential stored in |in|. If successful it
+  // returns the parsed structure, otherwise it returns |nullptr| and sets
+  // |*out_alert|.
+  static UniquePtr<DC> Parse(CRYPTO_BUFFER *in, uint8_t *out_alert);
+
+  // raw is the delegated credential encoded as specified in draft-ietf-tls-
+  // subcerts-03.
+  UniquePtr<CRYPTO_BUFFER> raw;
+
+  // expected_cert_verify_algorithm is the signature scheme of the DC public
+  // key.
+  uint16_t expected_cert_verify_algorithm = 0;
+
+  // pkey is the public key parsed from |public_key|.
+  UniquePtr<EVP_PKEY> pkey;
+
+ private:
+  friend DC* New<DC>();
+  DC();
+};
+
+// ssl_signing_with_dc returns true if the peer has indicated support for
+// delegated credentials and this host has sent a delegated credential in
+// response. If this is true then we've committed to using the DC in the
+// handshake.
+bool ssl_signing_with_dc(const SSL_HANDSHAKE *hs);
+
+
+struct SSL_HANDSHAKE {
+  explicit SSL_HANDSHAKE(SSL *ssl);
+  ~SSL_HANDSHAKE();
+  static constexpr bool kAllowUniquePtr = true;
+
+  // ssl is a non-owning pointer to the parent |SSL| object.
+  SSL *ssl;
+
+  // config is a non-owning pointer to the handshake configuration.
+  SSL_CONFIG *config;
+
+  // wait contains the operation the handshake is currently blocking on or
+  // |ssl_hs_ok| if none.
+  enum ssl_hs_wait_t wait = ssl_hs_ok;
+
+  // state is the internal state for the TLS 1.2 and below handshake. Its
+  // values depend on |do_handshake| but the starting state is always zero.
+  int state = 0;
+
+  // tls13_state is the internal state for the TLS 1.3 handshake. Its values
+  // depend on |do_handshake| but the starting state is always zero.
+  int tls13_state = 0;
+
+  // min_version is the minimum accepted protocol version, taking account both
+  // |SSL_OP_NO_*| and |SSL_CTX_set_min_proto_version| APIs.
+  uint16_t min_version = 0;
+
+  // max_version is the maximum accepted protocol version, taking account both
+  // |SSL_OP_NO_*| and |SSL_CTX_set_max_proto_version| APIs.
+  uint16_t max_version = 0;
+
+ private:
+  size_t hash_len_ = 0;
+  uint8_t secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t early_traffic_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t client_handshake_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t server_handshake_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t client_traffic_secret_0_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t server_traffic_secret_0_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t expected_client_finished_[SSL_MAX_MD_SIZE] = {0};
+
+ public:
+  void ResizeSecrets(size_t hash_len);
+
+  Span<uint8_t> secret() { return MakeSpan(secret_, hash_len_); }
+  Span<uint8_t> early_traffic_secret() {
+    return MakeSpan(early_traffic_secret_, hash_len_);
+  }
+  Span<uint8_t> client_handshake_secret() {
+    return MakeSpan(client_handshake_secret_, hash_len_);
+  }
+  Span<uint8_t> server_handshake_secret() {
+    return MakeSpan(server_handshake_secret_, hash_len_);
+  }
+  Span<uint8_t> client_traffic_secret_0() {
+    return MakeSpan(client_traffic_secret_0_, hash_len_);
+  }
+  Span<uint8_t> server_traffic_secret_0() {
+    return MakeSpan(server_traffic_secret_0_, hash_len_);
+  }
+  Span<uint8_t> expected_client_finished() {
+    return MakeSpan(expected_client_finished_, hash_len_);
+  }
+
+  union {
+    // sent is a bitset where the bits correspond to elements of kExtensions
+    // in t1_lib.c. Each bit is set if that extension was sent in a
+    // ClientHello. It's not used by servers.
+    uint32_t sent = 0;
+    // received is a bitset, like |sent|, but is used by servers to record
+    // which extensions were received from a client.
+    uint32_t received;
+  } extensions;
+
+  // retry_group is the group ID selected by the server in HelloRetryRequest in
+  // TLS 1.3.
+  uint16_t retry_group = 0;
+
+  // error, if |wait| is |ssl_hs_error|, is the error the handshake failed on.
+  UniquePtr<ERR_SAVE_STATE> error;
+
+  // key_shares are the current key exchange instances. The second is only used
+  // as a client if we believe that we should offer two key shares in a
+  // ClientHello.
+  UniquePtr<SSLKeyShare> key_shares[2];
+
+  // transcript is the current handshake transcript.
+  SSLTranscript transcript;
+
+  // cookie is the value of the cookie received from the server, if any.
+  Array<uint8_t> cookie;
+
+  // key_share_bytes is the value of the previously sent KeyShare extension by
+  // the client in TLS 1.3.
+  Array<uint8_t> key_share_bytes;
+
+  // ecdh_public_key, for servers, is the key share to be sent to the client in
+  // TLS 1.3.
+  Array<uint8_t> ecdh_public_key;
+
+  // peer_sigalgs are the signature algorithms that the peer supports. These are
+  // taken from the contents of the signature algorithms extension for a server
+  // or from the CertificateRequest for a client.
+  Array<uint16_t> peer_sigalgs;
+
+  // peer_supported_group_list contains the supported group IDs advertised by
+  // the peer. This is only set on the server's end. The server does not
+  // advertise this extension to the client.
+  Array<uint16_t> peer_supported_group_list;
+
+  // peer_key is the peer's ECDH key for a TLS 1.2 client.
+  Array<uint8_t> peer_key;
+
+  // negotiated_token_binding_version is used by a server to store the
+  // on-the-wire encoding of the Token Binding protocol version to advertise in
+  // the ServerHello/EncryptedExtensions if the Token Binding extension is to be
+  // sent.
+  uint16_t negotiated_token_binding_version;
+
+  // cert_compression_alg_id, for a server, contains the negotiated certificate
+  // compression algorithm for this client. It is only valid if
+  // |cert_compression_negotiated| is true.
+  uint16_t cert_compression_alg_id;
+
+  // server_params, in a TLS 1.2 server, stores the ServerKeyExchange
+  // parameters. It has client and server randoms prepended for signing
+  // convenience.
+  Array<uint8_t> server_params;
+
+  // peer_psk_identity_hint, on the client, is the psk_identity_hint sent by the
+  // server when using a TLS 1.2 PSK key exchange.
+  UniquePtr<char> peer_psk_identity_hint;
+
+  // ca_names, on the client, contains the list of CAs received in a
+  // CertificateRequest message.
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ca_names;
+
+  // cached_x509_ca_names contains a cache of parsed versions of the elements of
+  // |ca_names|. This pointer is left non-owning so only
+  // |ssl_crypto_x509_method| needs to link against crypto/x509.
+  STACK_OF(X509_NAME) *cached_x509_ca_names = nullptr;
+
+  // certificate_types, on the client, contains the set of certificate types
+  // received in a CertificateRequest message.
+  Array<uint8_t> certificate_types;
+
+  // local_pubkey is the public key we are authenticating as.
+  UniquePtr<EVP_PKEY> local_pubkey;
+
+  // peer_pubkey is the public key parsed from the peer's leaf certificate.
+  UniquePtr<EVP_PKEY> peer_pubkey;
+
+  // new_session is the new mutable session being established by the current
+  // handshake. It should not be cached.
+  UniquePtr<SSL_SESSION> new_session;
+
+  // early_session is the session corresponding to the current 0-RTT state on
+  // the client if |in_early_data| is true.
+  UniquePtr<SSL_SESSION> early_session;
+
+  // new_cipher is the cipher being negotiated in this handshake.
+  const SSL_CIPHER *new_cipher = nullptr;
+
+  // key_block is the record-layer key block for TLS 1.2 and earlier.
+  Array<uint8_t> key_block;
+
+  // scts_requested is true if the SCT extension is in the ClientHello.
+  bool scts_requested : 1;
+
+  // needs_psk_binder is true if the ClientHello has a placeholder PSK binder to
+  // be filled in.
+  bool needs_psk_binder : 1;
+
+  // handshake_finalized is true once the handshake has completed, at which
+  // point accessors should use the established state.
+  bool handshake_finalized : 1;
+
+  // accept_psk_mode stores whether the client's PSK mode is compatible with our
+  // preferences.
+  bool accept_psk_mode : 1;
+
+  // cert_request is true if a client certificate was requested.
+  bool cert_request : 1;
+
+  // certificate_status_expected is true if OCSP stapling was negotiated and the
+  // server is expected to send a CertificateStatus message. (This is used on
+  // both the client and server sides.)
+  bool certificate_status_expected : 1;
+
+  // ocsp_stapling_requested is true if a client requested OCSP stapling.
+  bool ocsp_stapling_requested : 1;
+
+  // delegated_credential_requested is true if the peer indicated support for
+  // the delegated credential extension.
+  bool delegated_credential_requested : 1;
+
+  // should_ack_sni is used by a server and indicates that the SNI extension
+  // should be echoed in the ServerHello.
+  bool should_ack_sni : 1;
+
+  // in_false_start is true if there is a pending client handshake in False
+  // Start. The client may write data at this point.
+  bool in_false_start : 1;
+
+  // in_early_data is true if there is a pending handshake that has progressed
+  // enough to send and receive early data.
+  bool in_early_data : 1;
+
+  // early_data_offered is true if the client sent the early_data extension.
+  bool early_data_offered : 1;
+
+  // can_early_read is true if application data may be read at this point in the
+  // handshake.
+  bool can_early_read : 1;
+
+  // can_early_write is true if application data may be written at this point in
+  // the handshake.
+  bool can_early_write : 1;
+
+  // next_proto_neg_seen is one of NPN was negotiated.
+  bool next_proto_neg_seen : 1;
+
+  // ticket_expected is true if a TLS 1.2 NewSessionTicket message is to be sent
+  // or received.
+  bool ticket_expected : 1;
+
+  // extended_master_secret is true if the extended master secret extension is
+  // negotiated in this handshake.
+  bool extended_master_secret : 1;
+
+  // pending_private_key_op is true if there is a pending private key operation
+  // in progress.
+  bool pending_private_key_op : 1;
+
+  // grease_seeded is true if |grease_seed| has been initialized.
+  bool grease_seeded : 1;
+
+  // handback indicates that a server should pause the handshake after
+  // finishing operations that require private key material, in such a way that
+  // |SSL_get_error| returns |SSL_ERROR_HANDBACK|.  It is set by
+  // |SSL_apply_handoff|.
+  bool handback : 1;
+
+  // cert_compression_negotiated is true iff |cert_compression_alg_id| is valid.
+  bool cert_compression_negotiated : 1;
+
+  // apply_jdk11_workaround is true if the peer is probably a JDK 11 client
+  // which implemented TLS 1.3 incorrectly.
+  bool apply_jdk11_workaround : 1;
+
+  // client_version is the value sent or received in the ClientHello version.
+  uint16_t client_version = 0;
+
+  // early_data_read is the amount of early data that has been read by the
+  // record layer.
+  uint16_t early_data_read = 0;
+
+  // early_data_written is the amount of early data that has been written by the
+  // record layer.
+  uint16_t early_data_written = 0;
+
+  // session_id is the session ID in the ClientHello.
+  uint8_t session_id[SSL_MAX_SSL_SESSION_ID_LENGTH] = {0};
+  uint8_t session_id_len = 0;
+
+  // grease_seed is the entropy for GREASE values. It is valid if
+  // |grease_seeded| is true.
+  uint8_t grease_seed[ssl_grease_last_index + 1] = {0};
+};
+
+UniquePtr<SSL_HANDSHAKE> ssl_handshake_new(SSL *ssl);
+
+// ssl_check_message_type checks if |msg| has type |type|. If so it returns
+// one. Otherwise, it sends an alert and returns zero.
+bool ssl_check_message_type(SSL *ssl, const SSLMessage &msg, int type);
+
+// ssl_run_handshake runs the TLS handshake. It returns one on success and <= 0
+// on error. It sets |out_early_return| to one if we've completed the handshake
+// early.
+int ssl_run_handshake(SSL_HANDSHAKE *hs, bool *out_early_return);
+
+// The following are implementations of |do_handshake| for the client and
+// server.
+enum ssl_hs_wait_t ssl_client_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t ssl_server_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t tls13_client_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t tls13_server_handshake(SSL_HANDSHAKE *hs);
+
+// The following functions return human-readable representations of the TLS
+// handshake states for debugging.
+const char *ssl_client_handshake_state(SSL_HANDSHAKE *hs);
+const char *ssl_server_handshake_state(SSL_HANDSHAKE *hs);
+const char *tls13_client_handshake_state(SSL_HANDSHAKE *hs);
+const char *tls13_server_handshake_state(SSL_HANDSHAKE *hs);
+
+// tls13_add_key_update queues a KeyUpdate message on |ssl|. The
+// |update_requested| argument must be one of |SSL_KEY_UPDATE_REQUESTED| or
+// |SSL_KEY_UPDATE_NOT_REQUESTED|.
+bool tls13_add_key_update(SSL *ssl, int update_requested);
+
+// tls13_post_handshake processes a post-handshake message. It returns true on
+// success and false on failure.
+bool tls13_post_handshake(SSL *ssl, const SSLMessage &msg);
+
+bool tls13_process_certificate(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                               bool allow_anonymous);
+bool tls13_process_certificate_verify(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+// tls13_process_finished processes |msg| as a Finished message from the
+// peer. If |use_saved_value| is true, the verify_data is compared against
+// |hs->expected_client_finished| rather than computed fresh.
+bool tls13_process_finished(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                            bool use_saved_value);
+
+bool tls13_add_certificate(SSL_HANDSHAKE *hs);
+
+// tls13_add_certificate_verify adds a TLS 1.3 CertificateVerify message to the
+// handshake. If it returns |ssl_private_key_retry|, it should be called again
+// to retry when the signing operation is completed.
+enum ssl_private_key_result_t tls13_add_certificate_verify(SSL_HANDSHAKE *hs);
+
+bool tls13_add_finished(SSL_HANDSHAKE *hs);
+bool tls13_process_new_session_ticket(SSL *ssl, const SSLMessage &msg);
+
+bool ssl_ext_key_share_parse_serverhello(SSL_HANDSHAKE *hs,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents);
+bool ssl_ext_key_share_parse_clienthello(SSL_HANDSHAKE *hs, bool *out_found,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents);
+bool ssl_ext_key_share_add_serverhello(SSL_HANDSHAKE *hs, CBB *out);
+
+bool ssl_ext_pre_shared_key_parse_serverhello(SSL_HANDSHAKE *hs,
+                                              uint8_t *out_alert,
+                                              CBS *contents);
+bool ssl_ext_pre_shared_key_parse_clienthello(
+    SSL_HANDSHAKE *hs, CBS *out_ticket, CBS *out_binders,
+    uint32_t *out_obfuscated_ticket_age, uint8_t *out_alert,
+    const SSL_CLIENT_HELLO *client_hello, CBS *contents);
+bool ssl_ext_pre_shared_key_add_serverhello(SSL_HANDSHAKE *hs, CBB *out);
+
+// ssl_is_sct_list_valid does a shallow parse of the SCT list in |contents| and
+// returns whether it's valid.
+bool ssl_is_sct_list_valid(const CBS *contents);
+
+bool ssl_write_client_hello(SSL_HANDSHAKE *hs);
+
+enum ssl_cert_verify_context_t {
+  ssl_cert_verify_server,
+  ssl_cert_verify_client,
+  ssl_cert_verify_channel_id,
+};
+
+// tls13_get_cert_verify_signature_input generates the message to be signed for
+// TLS 1.3's CertificateVerify message. |cert_verify_context| determines the
+// type of signature. It sets |*out| to a newly allocated buffer containing the
+// result. This function returns true on success and false on failure.
+bool tls13_get_cert_verify_signature_input(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out,
+    enum ssl_cert_verify_context_t cert_verify_context);
+
+// ssl_is_alpn_protocol_allowed returns whether |protocol| is a valid server
+// selection for |hs->ssl|'s client preferences.
+bool ssl_is_alpn_protocol_allowed(const SSL_HANDSHAKE *hs,
+                                  Span<const uint8_t> protocol);
+
+// ssl_negotiate_alpn negotiates the ALPN extension, if applicable. It returns
+// true on successful negotiation or if nothing was negotiated. It returns false
+// and sets |*out_alert| to an alert on error.
+bool ssl_negotiate_alpn(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello);
+
+struct SSL_EXTENSION_TYPE {
+  uint16_t type;
+  bool *out_present;
+  CBS *out_data;
+};
+
+// ssl_parse_extensions parses a TLS extensions block out of |cbs| and advances
+// it. It writes the parsed extensions to pointers denoted by |ext_types|. On
+// success, it fills in the |out_present| and |out_data| fields and returns one.
+// Otherwise, it sets |*out_alert| to an alert to send and returns zero. Unknown
+// extensions are rejected unless |ignore_unknown| is 1.
+int ssl_parse_extensions(const CBS *cbs, uint8_t *out_alert,
+                         const SSL_EXTENSION_TYPE *ext_types,
+                         size_t num_ext_types, int ignore_unknown);
+
+// ssl_verify_peer_cert verifies the peer certificate for |hs|.
+enum ssl_verify_result_t ssl_verify_peer_cert(SSL_HANDSHAKE *hs);
+// ssl_reverify_peer_cert verifies the peer certificate for |hs| when resuming a
+// session.
+enum ssl_verify_result_t ssl_reverify_peer_cert(SSL_HANDSHAKE *hs,
+                                                bool send_alert);
+
+enum ssl_hs_wait_t ssl_get_finished(SSL_HANDSHAKE *hs);
+bool ssl_send_finished(SSL_HANDSHAKE *hs);
+bool ssl_output_cert_chain(SSL_HANDSHAKE *hs);
+
+// SSLKEYLOGFILE functions.
+
+// ssl_log_secret logs |secret| with label |label|, if logging is enabled for
+// |ssl|. It returns true on success and false on failure.
+bool ssl_log_secret(const SSL *ssl, const char *label,
+                    Span<const uint8_t> secret);
+
+
+// ClientHello functions.
+
+bool ssl_client_hello_init(const SSL *ssl, SSL_CLIENT_HELLO *out,
+                           const SSLMessage &msg);
+
+bool ssl_client_hello_get_extension(const SSL_CLIENT_HELLO *client_hello,
+                                    CBS *out, uint16_t extension_type);
+
+bool ssl_client_cipher_list_contains_cipher(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t id);
+
+
+// GREASE.
+
+// ssl_get_grease_value returns a GREASE value for |hs|. For a given
+// connection, the values for each index will be deterministic. This allows the
+// same ClientHello be sent twice for a HelloRetryRequest or the same group be
+// advertised in both supported_groups and key_shares.
+uint16_t ssl_get_grease_value(SSL_HANDSHAKE *hs, enum ssl_grease_index_t index);
+
+
+// Signature algorithms.
+
+// tls1_parse_peer_sigalgs parses |sigalgs| as the list of peer signature
+// algorithms and saves them on |hs|. It returns true on success and false on
+// error.
+bool tls1_parse_peer_sigalgs(SSL_HANDSHAKE *hs, const CBS *sigalgs);
+
+// tls1_get_legacy_signature_algorithm sets |*out| to the signature algorithm
+// that should be used with |pkey| in TLS 1.1 and earlier. It returns true on
+// success and false if |pkey| may not be used at those versions.
+bool tls1_get_legacy_signature_algorithm(uint16_t *out, const EVP_PKEY *pkey);
+
+// tls1_choose_signature_algorithm sets |*out| to a signature algorithm for use
+// with |hs|'s private key based on the peer's preferences and the algorithms
+// supported. It returns true on success and false on error.
+bool tls1_choose_signature_algorithm(SSL_HANDSHAKE *hs, uint16_t *out);
+
+// tls1_get_peer_verify_algorithms returns the signature schemes for which the
+// peer indicated support.
+//
+// NOTE: The related function |SSL_get0_peer_verify_algorithms| only has
+// well-defined behavior during the callbacks set by |SSL_CTX_set_cert_cb| and
+// |SSL_CTX_set_client_cert_cb|, or when the handshake is paused because of
+// them.
+Span<const uint16_t> tls1_get_peer_verify_algorithms(const SSL_HANDSHAKE *hs);
+
+// tls12_add_verify_sigalgs adds the signature algorithms acceptable for the
+// peer signature to |out|. It returns true on success and false on error.
+bool tls12_add_verify_sigalgs(const SSL *ssl, CBB *out);
+
+// tls12_check_peer_sigalg checks if |sigalg| is acceptable for the peer
+// signature. It returns true on success and false on error, setting
+// |*out_alert| to an alert to send.
+bool tls12_check_peer_sigalg(const SSL *ssl, uint8_t *out_alert,
+                             uint16_t sigalg);
+
+
+// Underdocumented functions.
+//
+// Functions below here haven't been touched up and may be underdocumented.
+
+#define TLSEXT_CHANNEL_ID_SIZE 128
+
+// From RFC4492, used in encoding the curve type in ECParameters
+#define NAMED_CURVE_TYPE 3
+
+struct CERT {
+  static constexpr bool kAllowUniquePtr = true;
+
+  explicit CERT(const SSL_X509_METHOD *x509_method);
+  ~CERT();
+
+  UniquePtr<EVP_PKEY> privatekey;
+
+  // chain contains the certificate chain, with the leaf at the beginning. The
+  // first element of |chain| may be NULL to indicate that the leaf certificate
+  // has not yet been set.
+  //   If |chain| != NULL -> len(chain) >= 1
+  //   If |chain[0]| == NULL -> len(chain) >= 2.
+  //   |chain[1..]| != NULL
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain;
+
+  // x509_chain may contain a parsed copy of |chain[1..]|. This is only used as
+  // a cache in order to implement “get0” functions that return a non-owning
+  // pointer to the certificate chain.
+  STACK_OF(X509) *x509_chain = nullptr;
+
+  // x509_leaf may contain a parsed copy of the first element of |chain|. This
+  // is only used as a cache in order to implement “get0” functions that return
+  // a non-owning pointer to the certificate chain.
+  X509 *x509_leaf = nullptr;
+
+  // x509_stash contains the last |X509| object append to the chain. This is a
+  // workaround for some third-party code that continue to use an |X509| object
+  // even after passing ownership with an “add0” function.
+  X509 *x509_stash = nullptr;
+
+  // key_method, if non-NULL, is a set of callbacks to call for private key
+  // operations.
+  const SSL_PRIVATE_KEY_METHOD *key_method = nullptr;
+
+  // x509_method contains pointers to functions that might deal with |X509|
+  // compatibility, or might be a no-op, depending on the application.
+  const SSL_X509_METHOD *x509_method = nullptr;
+
+  // sigalgs, if non-empty, is the set of signature algorithms supported by
+  // |privatekey| in decreasing order of preference.
+  Array<uint16_t> sigalgs;
+
+  // Certificate setup callback: if set is called whenever a
+  // certificate may be required (client or server). the callback
+  // can then examine any appropriate parameters and setup any
+  // certificates required. This allows advanced applications
+  // to select certificates on the fly: for example based on
+  // supported signature algorithms or curves.
+  int (*cert_cb)(SSL *ssl, void *arg) = nullptr;
+  void *cert_cb_arg = nullptr;
+
+  // Optional X509_STORE for certificate validation. If NULL the parent SSL_CTX
+  // store is used instead.
+  X509_STORE *verify_store = nullptr;
+
+  // Signed certificate timestamp list to be sent to the client, if requested
+  UniquePtr<CRYPTO_BUFFER> signed_cert_timestamp_list;
+
+  // OCSP response to be sent to the client, if requested.
+  UniquePtr<CRYPTO_BUFFER> ocsp_response;
+
+  // sid_ctx partitions the session space within a shared session cache or
+  // ticket key. Only sessions with a matching value will be accepted.
+  uint8_t sid_ctx_length = 0;
+  uint8_t sid_ctx[SSL_MAX_SID_CTX_LENGTH] = {0};
+
+  // Delegated credentials.
+
+  // dc is the delegated credential to send to the peer (if requested).
+  UniquePtr<DC> dc = nullptr;
+
+  // dc_privatekey is used instead of |privatekey| or |key_method| to
+  // authenticate the host if a delegated credential is used in the handshake.
+  UniquePtr<EVP_PKEY> dc_privatekey = nullptr;
+
+  // dc_key_method, if not NULL, is used instead of |dc_privatekey| to
+  // authenticate the host.
+  const SSL_PRIVATE_KEY_METHOD *dc_key_method = nullptr;
+};
+
+// |SSL_PROTOCOL_METHOD| abstracts between TLS and DTLS.
+struct SSL_PROTOCOL_METHOD {
+  bool is_dtls;
+  bool (*ssl_new)(SSL *ssl);
+  void (*ssl_free)(SSL *ssl);
+  // get_message sets |*out| to the current handshake message and returns true
+  // if one has been received. It returns false if more input is needed.
+  bool (*get_message)(const SSL *ssl, SSLMessage *out);
+  // next_message is called to release the current handshake message.
+  void (*next_message)(SSL *ssl);
+  // Use the |ssl_open_handshake| wrapper.
+  ssl_open_record_t (*open_handshake)(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in);
+  // Use the |ssl_open_change_cipher_spec| wrapper.
+  ssl_open_record_t (*open_change_cipher_spec)(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in);
+  // Use the |ssl_open_app_data| wrapper.
+  ssl_open_record_t (*open_app_data)(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in);
+  int (*write_app_data)(SSL *ssl, bool *out_needs_handshake, const uint8_t *buf,
+                        int len);
+  int (*dispatch_alert)(SSL *ssl);
+  // init_message begins a new handshake message of type |type|. |cbb| is the
+  // root CBB to be passed into |finish_message|. |*body| is set to a child CBB
+  // the caller should write to. It returns true on success and false on error.
+  bool (*init_message)(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+  // finish_message finishes a handshake message. It sets |*out_msg| to the
+  // serialized message. It returns true on success and false on error.
+  bool (*finish_message)(SSL *ssl, CBB *cbb, bssl::Array<uint8_t> *out_msg);
+  // add_message adds a handshake message to the pending flight. It returns
+  // true on success and false on error.
+  bool (*add_message)(SSL *ssl, bssl::Array<uint8_t> msg);
+  // add_change_cipher_spec adds a ChangeCipherSpec record to the pending
+  // flight. It returns true on success and false on error.
+  bool (*add_change_cipher_spec)(SSL *ssl);
+  // flush_flight flushes the pending flight to the transport. It returns one on
+  // success and <= 0 on error.
+  int (*flush_flight)(SSL *ssl);
+  // on_handshake_complete is called when the handshake is complete.
+  void (*on_handshake_complete)(SSL *ssl);
+  // set_read_state sets |ssl|'s read cipher state to |aead_ctx|. It returns
+  // true on success and false if changing the read state is forbidden at this
+  // point.
+  bool (*set_read_state)(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx);
+  // set_write_state sets |ssl|'s write cipher state to |aead_ctx|. It returns
+  // true on success and false if changing the write state is forbidden at this
+  // point.
+  bool (*set_write_state)(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx);
+};
+
+// The following wrappers call |open_*| but handle |read_shutdown| correctly.
+
+// ssl_open_handshake processes a record from |in| for reading a handshake
+// message.
+ssl_open_record_t ssl_open_handshake(SSL *ssl, size_t *out_consumed,
+                                     uint8_t *out_alert, Span<uint8_t> in);
+
+// ssl_open_change_cipher_spec processes a record from |in| for reading a
+// ChangeCipherSpec.
+ssl_open_record_t ssl_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                              uint8_t *out_alert,
+                                              Span<uint8_t> in);
+
+// ssl_open_app_data processes a record from |in| for reading application data.
+// On success, it returns |ssl_open_record_success| and sets |*out| to the
+// input. If it encounters a post-handshake message, it returns
+// |ssl_open_record_discard|. The caller should then retry, after processing any
+// messages received with |get_message|.
+ssl_open_record_t ssl_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                    size_t *out_consumed, uint8_t *out_alert,
+                                    Span<uint8_t> in);
+
+struct SSL_X509_METHOD {
+  // check_client_CA_list returns one if |names| is a good list of X.509
+  // distinguished names and zero otherwise. This is used to ensure that we can
+  // reject unparsable values at handshake time when using crypto/x509.
+  bool (*check_client_CA_list)(STACK_OF(CRYPTO_BUFFER) *names);
+
+  // cert_clear frees and NULLs all X509 certificate-related state.
+  void (*cert_clear)(CERT *cert);
+  // cert_free frees all X509-related state.
+  void (*cert_free)(CERT *cert);
+  // cert_flush_cached_chain drops any cached |X509|-based certificate chain
+  // from |cert|.
+  // cert_dup duplicates any needed fields from |cert| to |new_cert|.
+  void (*cert_dup)(CERT *new_cert, const CERT *cert);
+  void (*cert_flush_cached_chain)(CERT *cert);
+  // cert_flush_cached_chain drops any cached |X509|-based leaf certificate
+  // from |cert|.
+  void (*cert_flush_cached_leaf)(CERT *cert);
+
+  // session_cache_objects fills out |sess->x509_peer| and |sess->x509_chain|
+  // from |sess->certs| and erases |sess->x509_chain_without_leaf|. It returns
+  // true on success or false on error.
+  bool (*session_cache_objects)(SSL_SESSION *session);
+  // session_dup duplicates any needed fields from |session| to |new_session|.
+  // It returns true on success or false on error.
+  bool (*session_dup)(SSL_SESSION *new_session, const SSL_SESSION *session);
+  // session_clear frees any X509-related state from |session|.
+  void (*session_clear)(SSL_SESSION *session);
+  // session_verify_cert_chain verifies the certificate chain in |session|,
+  // sets |session->verify_result| and returns true on success or false on
+  // error.
+  bool (*session_verify_cert_chain)(SSL_SESSION *session, SSL_HANDSHAKE *ssl,
+                                    uint8_t *out_alert);
+
+  // hs_flush_cached_ca_names drops any cached |X509_NAME|s from |hs|.
+  void (*hs_flush_cached_ca_names)(SSL_HANDSHAKE *hs);
+  // ssl_new does any necessary initialisation of |hs|. It returns true on
+  // success or false on error.
+  bool (*ssl_new)(SSL_HANDSHAKE *hs);
+  // ssl_free frees anything created by |ssl_new|.
+  void (*ssl_config_free)(SSL_CONFIG *cfg);
+  // ssl_flush_cached_client_CA drops any cached |X509_NAME|s from |ssl|.
+  void (*ssl_flush_cached_client_CA)(SSL_CONFIG *cfg);
+  // ssl_auto_chain_if_needed runs the deprecated auto-chaining logic if
+  // necessary. On success, it updates |ssl|'s certificate configuration as
+  // needed and returns true. Otherwise, it returns false.
+  bool (*ssl_auto_chain_if_needed)(SSL_HANDSHAKE *hs);
+  // ssl_ctx_new does any necessary initialisation of |ctx|. It returns true on
+  // success or false on error.
+  bool (*ssl_ctx_new)(SSL_CTX *ctx);
+  // ssl_ctx_free frees anything created by |ssl_ctx_new|.
+  void (*ssl_ctx_free)(SSL_CTX *ctx);
+  // ssl_ctx_flush_cached_client_CA drops any cached |X509_NAME|s from |ctx|.
+  void (*ssl_ctx_flush_cached_client_CA)(SSL_CTX *ssl);
+};
+
+// ssl_crypto_x509_method provides the |SSL_X509_METHOD| functions using
+// crypto/x509.
+extern const SSL_X509_METHOD ssl_crypto_x509_method;
+
+// ssl_noop_x509_method provides the |SSL_X509_METHOD| functions that avoid
+// crypto/x509.
+extern const SSL_X509_METHOD ssl_noop_x509_method;
+
+struct TicketKey {
+  static constexpr bool kAllowUniquePtr = true;
+
+  uint8_t name[SSL_TICKET_KEY_NAME_LEN] = {0};
+  uint8_t hmac_key[16] = {0};
+  uint8_t aes_key[16] = {0};
+  // next_rotation_tv_sec is the time (in seconds from the epoch) when the
+  // current key should be superseded by a new key, or the time when a previous
+  // key should be dropped. If zero, then the key should not be automatically
+  // rotated.
+  uint64_t next_rotation_tv_sec = 0;
+};
+
+struct CertCompressionAlg {
+  static constexpr bool kAllowUniquePtr = true;
+
+  ssl_cert_compression_func_t compress = nullptr;
+  ssl_cert_decompression_func_t decompress = nullptr;
+  uint16_t alg_id = 0;
+};
+
+BSSL_NAMESPACE_END
+
+DEFINE_LHASH_OF(SSL_SESSION)
+
+BSSL_NAMESPACE_BEGIN
+
+// An ssl_shutdown_t describes the shutdown state of one end of the connection,
+// whether it is alive or has been shutdown via close_notify or fatal alert.
+enum ssl_shutdown_t {
+  ssl_shutdown_none = 0,
+  ssl_shutdown_close_notify = 1,
+  ssl_shutdown_error = 2,
+};
+
+struct SSL3_STATE {
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSL3_STATE();
+  ~SSL3_STATE();
+
+  uint8_t read_sequence[8] = {0};
+  uint8_t write_sequence[8] = {0};
+
+  uint8_t server_random[SSL3_RANDOM_SIZE] = {0};
+  uint8_t client_random[SSL3_RANDOM_SIZE] = {0};
+
+  // read_buffer holds data from the transport to be processed.
+  SSLBuffer read_buffer;
+  // write_buffer holds data to be written to the transport.
+  SSLBuffer write_buffer;
+
+  // pending_app_data is the unconsumed application data. It points into
+  // |read_buffer|.
+  Span<uint8_t> pending_app_data;
+
+  // partial write - check the numbers match
+  unsigned int wnum = 0;  // number of bytes sent so far
+  int wpend_tot = 0;      // number bytes written
+  int wpend_type = 0;
+  int wpend_ret = 0;  // number of bytes submitted
+  const uint8_t *wpend_buf = nullptr;
+
+  // read_shutdown is the shutdown state for the read half of the connection.
+  enum ssl_shutdown_t read_shutdown = ssl_shutdown_none;
+
+  // write_shutdown is the shutdown state for the write half of the connection.
+  enum ssl_shutdown_t write_shutdown = ssl_shutdown_none;
+
+  // read_error, if |read_shutdown| is |ssl_shutdown_error|, is the error for
+  // the receive half of the connection.
+  UniquePtr<ERR_SAVE_STATE> read_error;
+
+  int total_renegotiations = 0;
+
+  // This holds a variable that indicates what we were doing when a 0 or -1 is
+  // returned.  This is needed for non-blocking IO so we know what request
+  // needs re-doing when in SSL_accept or SSL_connect
+  int rwstate = SSL_ERROR_NONE;
+
+  enum ssl_encryption_level_t read_level = ssl_encryption_initial;
+  enum ssl_encryption_level_t write_level = ssl_encryption_initial;
+
+  // early_data_skipped is the amount of early data that has been skipped by the
+  // record layer.
+  uint16_t early_data_skipped = 0;
+
+  // empty_record_count is the number of consecutive empty records received.
+  uint8_t empty_record_count = 0;
+
+  // warning_alert_count is the number of consecutive warning alerts
+  // received.
+  uint8_t warning_alert_count = 0;
+
+  // key_update_count is the number of consecutive KeyUpdates received.
+  uint8_t key_update_count = 0;
+
+  // The negotiated Token Binding key parameter. Only valid if
+  // |token_binding_negotiated| is set.
+  uint8_t negotiated_token_binding_param = 0;
+
+  // skip_early_data instructs the record layer to skip unexpected early data
+  // messages when 0RTT is rejected.
+  bool skip_early_data : 1;
+
+  // have_version is true if the connection's final version is known. Otherwise
+  // the version has not been negotiated yet.
+  bool have_version : 1;
+
+  // v2_hello_done is true if the peer's V2ClientHello, if any, has been handled
+  // and future messages should use the record layer.
+  bool v2_hello_done : 1;
+
+  // is_v2_hello is true if the current handshake message was derived from a
+  // V2ClientHello rather than received from the peer directly.
+  bool is_v2_hello : 1;
+
+  // has_message is true if the current handshake message has been returned
+  // at least once by |get_message| and false otherwise.
+  bool has_message : 1;
+
+  // initial_handshake_complete is true if the initial handshake has
+  // completed.
+  bool initial_handshake_complete : 1;
+
+  // session_reused indicates whether a session was resumed.
+  bool session_reused : 1;
+
+  // delegated_credential_used is whether we presented a delegated credential to
+  // the peer.
+  bool delegated_credential_used : 1;
+
+  bool send_connection_binding : 1;
+
+  // In a client, this means that the server supported Channel ID and that a
+  // Channel ID was sent. In a server it means that we echoed support for
+  // Channel IDs and that |channel_id| will be valid after the handshake.
+  bool channel_id_valid : 1;
+
+  // key_update_pending is true if we have a KeyUpdate acknowledgment
+  // outstanding.
+  bool key_update_pending : 1;
+
+  // wpend_pending is true if we have a pending write outstanding.
+  bool wpend_pending : 1;
+
+  // early_data_accepted is true if early data was accepted by the server.
+  bool early_data_accepted : 1;
+
+  // tls13_downgrade is whether the TLS 1.3 anti-downgrade logic fired.
+  bool tls13_downgrade : 1;
+
+  // token_binding_negotiated is set if Token Binding was negotiated.
+  bool token_binding_negotiated : 1;
+
+  // alert_dispatch is true there is an alert in |send_alert| to be sent.
+  bool alert_dispatch : 1;
+
+  // renegotiate_pending is whether the read half of the channel is blocked on a
+  // HelloRequest.
+  bool renegotiate_pending : 1;
+
+  // used_hello_retry_request is whether the handshake used a TLS 1.3
+  // HelloRetryRequest message.
+  bool used_hello_retry_request : 1;
+
+  // hs_buf is the buffer of handshake data to process.
+  UniquePtr<BUF_MEM> hs_buf;
+
+  // pending_hs_data contains the pending handshake data that has not yet
+  // been encrypted to |pending_flight|. This allows packing the handshake into
+  // fewer records.
+  UniquePtr<BUF_MEM> pending_hs_data;
+
+  // pending_flight is the pending outgoing flight. This is used to flush each
+  // handshake flight in a single write. |write_buffer| must be written out
+  // before this data.
+  UniquePtr<BUF_MEM> pending_flight;
+
+  // pending_flight_offset is the number of bytes of |pending_flight| which have
+  // been successfully written.
+  uint32_t pending_flight_offset = 0;
+
+  // ticket_age_skew is the difference, in seconds, between the client-sent
+  // ticket age and the server-computed value in TLS 1.3 server connections
+  // which resumed a session.
+  int32_t ticket_age_skew = 0;
+
+  // ssl_early_data_reason stores details on why 0-RTT was accepted or rejected.
+  enum ssl_early_data_reason_t early_data_reason = ssl_early_data_unknown;
+
+  // aead_read_ctx is the current read cipher state.
+  UniquePtr<SSLAEADContext> aead_read_ctx;
+
+  // aead_write_ctx is the current write cipher state.
+  UniquePtr<SSLAEADContext> aead_write_ctx;
+
+  // hs is the handshake state for the current handshake or NULL if there isn't
+  // one.
+  UniquePtr<SSL_HANDSHAKE> hs;
+
+  uint8_t write_traffic_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t read_traffic_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t exporter_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t write_traffic_secret_len = 0;
+  uint8_t read_traffic_secret_len = 0;
+  uint8_t exporter_secret_len = 0;
+
+  // Connection binding to prevent renegotiation attacks
+  uint8_t previous_client_finished[12] = {0};
+  uint8_t previous_client_finished_len = 0;
+  uint8_t previous_server_finished_len = 0;
+  uint8_t previous_server_finished[12] = {0};
+
+  uint8_t send_alert[2] = {0};
+
+  // established_session is the session established by the connection. This
+  // session is only filled upon the completion of the handshake and is
+  // immutable.
+  UniquePtr<SSL_SESSION> established_session;
+
+  // Next protocol negotiation. For the client, this is the protocol that we
+  // sent in NextProtocol and is set when handling ServerHello extensions.
+  //
+  // For a server, this is the client's selected_protocol from NextProtocol and
+  // is set when handling the NextProtocol message, before the Finished
+  // message.
+  Array<uint8_t> next_proto_negotiated;
+
+  // ALPN information
+  // (we are in the process of transitioning from NPN to ALPN.)
+
+  // In a server these point to the selected ALPN protocol after the
+  // ClientHello has been processed. In a client these contain the protocol
+  // that the server selected once the ServerHello has been processed.
+  Array<uint8_t> alpn_selected;
+
+  // hostname, on the server, is the value of the SNI extension.
+  UniquePtr<char> hostname;
+
+  // For a server:
+  //     If |channel_id_valid| is true, then this contains the
+  //     verified Channel ID from the client: a P256 point, (x,y), where
+  //     each are big-endian values.
+  uint8_t channel_id[64] = {0};
+
+  // Contains the QUIC transport params received by the peer.
+  Array<uint8_t> peer_quic_transport_params;
+
+  // srtp_profile is the selected SRTP protection profile for
+  // DTLS-SRTP.
+  const SRTP_PROTECTION_PROFILE *srtp_profile = nullptr;
+};
+
+// lengths of messages
+#define DTLS1_COOKIE_LENGTH 256
+
+#define DTLS1_RT_HEADER_LENGTH 13
+
+#define DTLS1_HM_HEADER_LENGTH 12
+
+#define DTLS1_CCS_HEADER_LENGTH 1
+
+#define DTLS1_AL_HEADER_LENGTH 2
+
+struct hm_header_st {
+  uint8_t type;
+  uint32_t msg_len;
+  uint16_t seq;
+  uint32_t frag_off;
+  uint32_t frag_len;
+};
+
+// An hm_fragment is an incoming DTLS message, possibly not yet assembled.
+struct hm_fragment {
+  static constexpr bool kAllowUniquePtr = true;
+
+  hm_fragment() {}
+  hm_fragment(const hm_fragment &) = delete;
+  hm_fragment &operator=(const hm_fragment &) = delete;
+
+  ~hm_fragment();
+
+  // type is the type of the message.
+  uint8_t type = 0;
+  // seq is the sequence number of this message.
+  uint16_t seq = 0;
+  // msg_len is the length of the message body.
+  uint32_t msg_len = 0;
+  // data is a pointer to the message, including message header. It has length
+  // |DTLS1_HM_HEADER_LENGTH| + |msg_len|.
+  uint8_t *data = nullptr;
+  // reassembly is a bitmask of |msg_len| bits corresponding to which parts of
+  // the message have been received. It is NULL if the message is complete.
+  uint8_t *reassembly = nullptr;
+};
+
+struct OPENSSL_timeval {
+  uint64_t tv_sec;
+  uint32_t tv_usec;
+};
+
+struct DTLS1_STATE {
+  static constexpr bool kAllowUniquePtr = true;
+
+  DTLS1_STATE();
+  ~DTLS1_STATE();
+
+  // has_change_cipher_spec is true if we have received a ChangeCipherSpec from
+  // the peer in this epoch.
+  bool has_change_cipher_spec : 1;
+
+  // outgoing_messages_complete is true if |outgoing_messages| has been
+  // completed by an attempt to flush it. Future calls to |add_message| and
+  // |add_change_cipher_spec| will start a new flight.
+  bool outgoing_messages_complete : 1;
+
+  // flight_has_reply is true if the current outgoing flight is complete and has
+  // processed at least one message. This is used to detect whether we or the
+  // peer sent the final flight.
+  bool flight_has_reply : 1;
+
+  uint8_t cookie[DTLS1_COOKIE_LENGTH] = {0};
+  size_t cookie_len = 0;
+
+  // The current data and handshake epoch.  This is initially undefined, and
+  // starts at zero once the initial handshake is completed.
+  uint16_t r_epoch = 0;
+  uint16_t w_epoch = 0;
+
+  // records being received in the current epoch
+  DTLS1_BITMAP bitmap;
+
+  uint16_t handshake_write_seq = 0;
+  uint16_t handshake_read_seq = 0;
+
+  // save last sequence number for retransmissions
+  uint8_t last_write_sequence[8] = {0};
+  UniquePtr<SSLAEADContext> last_aead_write_ctx;
+
+  // incoming_messages is a ring buffer of incoming handshake messages that have
+  // yet to be processed. The front of the ring buffer is message number
+  // |handshake_read_seq|, at position |handshake_read_seq| %
+  // |SSL_MAX_HANDSHAKE_FLIGHT|.
+  UniquePtr<hm_fragment> incoming_messages[SSL_MAX_HANDSHAKE_FLIGHT];
+
+  // outgoing_messages is the queue of outgoing messages from the last handshake
+  // flight.
+  DTLS_OUTGOING_MESSAGE outgoing_messages[SSL_MAX_HANDSHAKE_FLIGHT];
+  uint8_t outgoing_messages_len = 0;
+
+  // outgoing_written is the number of outgoing messages that have been
+  // written.
+  uint8_t outgoing_written = 0;
+  // outgoing_offset is the number of bytes of the next outgoing message have
+  // been written.
+  uint32_t outgoing_offset = 0;
+
+  unsigned mtu = 0;  // max DTLS packet size
+
+  // num_timeouts is the number of times the retransmit timer has fired since
+  // the last time it was reset.
+  unsigned num_timeouts = 0;
+
+  // Indicates when the last handshake msg or heartbeat sent will
+  // timeout.
+  struct OPENSSL_timeval next_timeout = {0, 0};
+
+  // timeout_duration_ms is the timeout duration in milliseconds.
+  unsigned timeout_duration_ms = 0;
+};
+
+// SSL_CONFIG contains configuration bits that can be shed after the handshake
+// completes.  Objects of this type are not shared; they are unique to a
+// particular |SSL|.
+//
+// See SSL_shed_handshake_config() for more about the conditions under which
+// configuration can be shed.
+struct SSL_CONFIG {
+  static constexpr bool kAllowUniquePtr = true;
+
+  explicit SSL_CONFIG(SSL *ssl_arg);
+  ~SSL_CONFIG();
+
+  // ssl is a non-owning pointer to the parent |SSL| object.
+  SSL *const ssl = nullptr;
+
+  // conf_max_version is the maximum acceptable version configured by
+  // |SSL_set_max_proto_version|. Note this version is not normalized in DTLS
+  // and is further constrained by |SSL_OP_NO_*|.
+  uint16_t conf_max_version = 0;
+
+  // conf_min_version is the minimum acceptable version configured by
+  // |SSL_set_min_proto_version|. Note this version is not normalized in DTLS
+  // and is further constrained by |SSL_OP_NO_*|.
+  uint16_t conf_min_version = 0;
+
+  X509_VERIFY_PARAM *param = nullptr;
+
+  // crypto
+  UniquePtr<SSLCipherPreferenceList> cipher_list;
+
+  // This is used to hold the local certificate used (i.e. the server
+  // certificate for a server or the client certificate for a client).
+  UniquePtr<CERT> cert;
+
+  int (*verify_callback)(int ok,
+                         X509_STORE_CTX *ctx) =
+      nullptr;  // fail if callback returns 0
+
+  enum ssl_verify_result_t (*custom_verify_callback)(
+      SSL *ssl, uint8_t *out_alert) = nullptr;
+  // Server-only: psk_identity_hint is the identity hint to send in
+  // PSK-based key exchanges.
+  UniquePtr<char> psk_identity_hint;
+
+  unsigned (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
+                                  unsigned max_identity_len, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+  unsigned (*psk_server_callback)(SSL *ssl, const char *identity, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+
+  // for server side, keep the list of CA_dn we can use
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> client_CA;
+
+  // cached_x509_client_CA is a cache of parsed versions of the elements of
+  // |client_CA|.
+  STACK_OF(X509_NAME) *cached_x509_client_CA = nullptr;
+
+  Array<uint16_t> supported_group_list;  // our list
+
+  // The client's Channel ID private key.
+  UniquePtr<EVP_PKEY> channel_id_private;
+
+  // For a client, this contains the list of supported protocols in wire
+  // format.
+  Array<uint8_t> alpn_client_proto_list;
+
+  // Contains a list of supported Token Binding key parameters.
+  Array<uint8_t> token_binding_params;
+
+  // Contains the QUIC transport params that this endpoint will send.
+  Array<uint8_t> quic_transport_params;
+
+  // verify_sigalgs, if not empty, is the set of signature algorithms
+  // accepted from the peer in decreasing order of preference.
+  Array<uint16_t> verify_sigalgs;
+
+  // srtp_profiles is the list of configured SRTP protection profiles for
+  // DTLS-SRTP.
+  UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> srtp_profiles;
+
+  // verify_mode is a bitmask of |SSL_VERIFY_*| values.
+  uint8_t verify_mode = SSL_VERIFY_NONE;
+
+  // Enable signed certificate time stamps. Currently client only.
+  bool signed_cert_timestamps_enabled : 1;
+
+  // ocsp_stapling_enabled is only used by client connections and indicates
+  // whether OCSP stapling will be requested.
+  bool ocsp_stapling_enabled : 1;
+
+  // channel_id_enabled is copied from the |SSL_CTX|. For a server, means that
+  // we'll accept Channel IDs from clients. For a client, means that we'll
+  // advertise support.
+  bool channel_id_enabled : 1;
+
+  // If enforce_rsa_key_usage is true, the handshake will fail if the
+  // keyUsage extension is present and incompatible with the TLS usage.
+  // This field is not read until after certificate verification.
+  bool enforce_rsa_key_usage : 1;
+
+  // retain_only_sha256_of_client_certs is true if we should compute the SHA256
+  // hash of the peer's certificate and then discard it to save memory and
+  // session space. Only effective on the server side.
+  bool retain_only_sha256_of_client_certs : 1;
+
+  // handoff indicates that a server should stop after receiving the
+  // ClientHello and pause the handshake in such a way that |SSL_get_error|
+  // returns |SSL_ERROR_HANDOFF|. This is copied in |SSL_new| from the |SSL_CTX|
+  // element of the same name and may be cleared if the handoff is declined.
+  bool handoff : 1;
+
+  // shed_handshake_config indicates that the handshake config (this object!)
+  // should be freed after the handshake completes.
+  bool shed_handshake_config : 1;
+
+  // ignore_tls13_downgrade is whether the connection should continue when the
+  // server random signals a downgrade.
+  bool ignore_tls13_downgrade : 1;
+
+  // jdk11_workaround is whether to disable TLS 1.3 for JDK 11 clients, as a
+  // workaround for https://bugs.openjdk.java.net/browse/JDK-8211806.
+  bool jdk11_workaround : 1;
+};
+
+// From RFC 8446, used in determining PSK modes.
+#define SSL_PSK_DHE_KE 0x1
+
+// kMaxEarlyDataAccepted is the advertised number of plaintext bytes of early
+// data that will be accepted. This value should be slightly below
+// kMaxEarlyDataSkipped in tls_record.c, which is measured in ciphertext.
+static const size_t kMaxEarlyDataAccepted = 14336;
+
+UniquePtr<CERT> ssl_cert_dup(CERT *cert);
+void ssl_cert_clear_certs(CERT *cert);
+bool ssl_set_cert(CERT *cert, UniquePtr<CRYPTO_BUFFER> buffer);
+bool ssl_is_key_type_supported(int key_type);
+// ssl_compare_public_and_private_key returns true if |pubkey| is the public
+// counterpart to |privkey|. Otherwise it returns false and pushes a helpful
+// message on the error queue.
+bool ssl_compare_public_and_private_key(const EVP_PKEY *pubkey,
+                                       const EVP_PKEY *privkey);
+bool ssl_cert_check_private_key(const CERT *cert, const EVP_PKEY *privkey);
+int ssl_get_new_session(SSL_HANDSHAKE *hs, int is_server);
+int ssl_encrypt_ticket(SSL_HANDSHAKE *hs, CBB *out, const SSL_SESSION *session);
+int ssl_ctx_rotate_ticket_encryption_key(SSL_CTX *ctx);
+
+// ssl_session_new returns a newly-allocated blank |SSL_SESSION| or nullptr on
+// error.
+UniquePtr<SSL_SESSION> ssl_session_new(const SSL_X509_METHOD *x509_method);
+
+// ssl_hash_session_id returns a hash of |session_id|, suitable for a hash table
+// keyed on session IDs.
+uint32_t ssl_hash_session_id(Span<const uint8_t> session_id);
+
+// SSL_SESSION_parse parses an |SSL_SESSION| from |cbs| and advances |cbs| over
+// the parsed data.
+OPENSSL_EXPORT UniquePtr<SSL_SESSION> SSL_SESSION_parse(
+    CBS *cbs, const SSL_X509_METHOD *x509_method, CRYPTO_BUFFER_POOL *pool);
+
+// ssl_session_serialize writes |in| to |cbb| as if it were serialising a
+// session for Session-ID resumption. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int ssl_session_serialize(const SSL_SESSION *in, CBB *cbb);
+
+// ssl_session_is_context_valid returns one if |session|'s session ID context
+// matches the one set on |hs| and zero otherwise.
+int ssl_session_is_context_valid(const SSL_HANDSHAKE *hs,
+                                 const SSL_SESSION *session);
+
+// ssl_session_is_time_valid returns one if |session| is still valid and zero if
+// it has expired.
+int ssl_session_is_time_valid(const SSL *ssl, const SSL_SESSION *session);
+
+// ssl_session_is_resumable returns one if |session| is resumable for |hs| and
+// zero otherwise.
+int ssl_session_is_resumable(const SSL_HANDSHAKE *hs,
+                             const SSL_SESSION *session);
+
+// ssl_session_protocol_version returns the protocol version associated with
+// |session|. Note that despite the name, this is not the same as
+// |SSL_SESSION_get_protocol_version|. The latter is based on upstream's name.
+uint16_t ssl_session_protocol_version(const SSL_SESSION *session);
+
+// ssl_session_get_digest returns the digest used in |session|.
+const EVP_MD *ssl_session_get_digest(const SSL_SESSION *session);
+
+void ssl_set_session(SSL *ssl, SSL_SESSION *session);
+
+// ssl_get_prev_session looks up the previous session based on |client_hello|.
+// On success, it sets |*out_session| to the session or nullptr if none was
+// found. If the session could not be looked up synchronously, it returns
+// |ssl_hs_pending_session| and should be called again. If a ticket could not be
+// decrypted immediately it returns |ssl_hs_pending_ticket| and should also
+// be called again. Otherwise, it returns |ssl_hs_error|.
+enum ssl_hs_wait_t ssl_get_prev_session(SSL_HANDSHAKE *hs,
+                                        UniquePtr<SSL_SESSION> *out_session,
+                                        bool *out_tickets_supported,
+                                        bool *out_renew_ticket,
+                                        const SSL_CLIENT_HELLO *client_hello);
+
+// The following flags determine which parts of the session are duplicated.
+#define SSL_SESSION_DUP_AUTH_ONLY 0x0
+#define SSL_SESSION_INCLUDE_TICKET 0x1
+#define SSL_SESSION_INCLUDE_NONAUTH 0x2
+#define SSL_SESSION_DUP_ALL \
+  (SSL_SESSION_INCLUDE_TICKET | SSL_SESSION_INCLUDE_NONAUTH)
+
+// SSL_SESSION_dup returns a newly-allocated |SSL_SESSION| with a copy of the
+// fields in |session| or nullptr on error. The new session is non-resumable and
+// must be explicitly marked resumable once it has been filled in.
+OPENSSL_EXPORT UniquePtr<SSL_SESSION> SSL_SESSION_dup(SSL_SESSION *session,
+                                                      int dup_flags);
+
+// ssl_session_rebase_time updates |session|'s start time to the current time,
+// adjusting the timeout so the expiration time is unchanged.
+void ssl_session_rebase_time(SSL *ssl, SSL_SESSION *session);
+
+// ssl_session_renew_timeout calls |ssl_session_rebase_time| and renews
+// |session|'s timeout to |timeout| (measured from the current time). The
+// renewal is clamped to the session's auth_timeout.
+void ssl_session_renew_timeout(SSL *ssl, SSL_SESSION *session,
+                               uint32_t timeout);
+
+void ssl_update_cache(SSL_HANDSHAKE *hs, int mode);
+
+void ssl_send_alert(SSL *ssl, int level, int desc);
+int ssl_send_alert_impl(SSL *ssl, int level, int desc);
+bool ssl3_get_message(const SSL *ssl, SSLMessage *out);
+ssl_open_record_t ssl3_open_handshake(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in);
+void ssl3_next_message(SSL *ssl);
+
+int ssl3_dispatch_alert(SSL *ssl);
+ssl_open_record_t ssl3_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in);
+ssl_open_record_t ssl3_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in);
+int ssl3_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *buf,
+                        int len);
+
+bool ssl3_new(SSL *ssl);
+void ssl3_free(SSL *ssl);
+
+bool ssl3_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+bool ssl3_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg);
+bool ssl3_add_message(SSL *ssl, Array<uint8_t> msg);
+bool ssl3_add_change_cipher_spec(SSL *ssl);
+int ssl3_flush_flight(SSL *ssl);
+
+bool dtls1_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+bool dtls1_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg);
+bool dtls1_add_message(SSL *ssl, Array<uint8_t> msg);
+bool dtls1_add_change_cipher_spec(SSL *ssl);
+int dtls1_flush_flight(SSL *ssl);
+
+// ssl_add_message_cbb finishes the handshake message in |cbb| and adds it to
+// the pending flight. It returns true on success and false on error.
+bool ssl_add_message_cbb(SSL *ssl, CBB *cbb);
+
+// ssl_hash_message incorporates |msg| into the handshake hash. It returns true
+// on success and false on allocation failure.
+bool ssl_hash_message(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+ssl_open_record_t dtls1_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                      size_t *out_consumed, uint8_t *out_alert,
+                                      Span<uint8_t> in);
+ssl_open_record_t dtls1_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                                uint8_t *out_alert,
+                                                Span<uint8_t> in);
+
+int dtls1_write_app_data(SSL *ssl, bool *out_needs_handshake,
+                         const uint8_t *buf, int len);
+
+// dtls1_write_record sends a record. It returns one on success and <= 0 on
+// error.
+int dtls1_write_record(SSL *ssl, int type, const uint8_t *buf, size_t len,
+                       enum dtls1_use_epoch_t use_epoch);
+
+int dtls1_retransmit_outgoing_messages(SSL *ssl);
+bool dtls1_parse_fragment(CBS *cbs, struct hm_header_st *out_hdr,
+                          CBS *out_body);
+bool dtls1_check_timeout_num(SSL *ssl);
+
+void dtls1_start_timer(SSL *ssl);
+void dtls1_stop_timer(SSL *ssl);
+bool dtls1_is_timer_expired(SSL *ssl);
+unsigned int dtls1_min_mtu(void);
+
+bool dtls1_new(SSL *ssl);
+void dtls1_free(SSL *ssl);
+
+bool dtls1_get_message(const SSL *ssl, SSLMessage *out);
+ssl_open_record_t dtls1_open_handshake(SSL *ssl, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in);
+void dtls1_next_message(SSL *ssl);
+int dtls1_dispatch_alert(SSL *ssl);
+
+// tls1_configure_aead configures either the read or write direction AEAD (as
+// determined by |direction|) using the keys generated by the TLS KDF. The
+// |key_block_cache| argument is used to store the generated key block, if
+// empty. Otherwise it's assumed that the key block is already contained within
+// it. Returns one on success or zero on error.
+int tls1_configure_aead(SSL *ssl, evp_aead_direction_t direction,
+                        Array<uint8_t> *key_block_cache,
+                        const SSL_CIPHER *cipher,
+                        Span<const uint8_t> iv_override);
+
+int tls1_change_cipher_state(SSL_HANDSHAKE *hs, evp_aead_direction_t direction);
+int tls1_generate_master_secret(SSL_HANDSHAKE *hs, uint8_t *out,
+                                Span<const uint8_t> premaster);
+
+// tls1_get_grouplist returns the locally-configured group preference list.
+Span<const uint16_t> tls1_get_grouplist(const SSL_HANDSHAKE *ssl);
+
+// tls1_check_group_id returns whether |group_id| is consistent with locally-
+// configured group preferences.
+bool tls1_check_group_id(const SSL_HANDSHAKE *ssl, uint16_t group_id);
+
+// tls1_get_shared_group sets |*out_group_id| to the first preferred shared
+// group between client and server preferences and returns true. If none may be
+// found, it returns false.
+bool tls1_get_shared_group(SSL_HANDSHAKE *hs, uint16_t *out_group_id);
+
+// tls1_set_curves converts the array of NIDs in |curves| into a newly allocated
+// array of TLS group IDs. On success, the function returns true and writes the
+// array to |*out_group_ids|. Otherwise, it returns false.
+bool tls1_set_curves(Array<uint16_t> *out_group_ids, Span<const int> curves);
+
+// tls1_set_curves_list converts the string of curves pointed to by |curves|
+// into a newly allocated array of TLS group IDs. On success, the function
+// returns true and writes the array to |*out_group_ids|. Otherwise, it returns
+// false.
+bool tls1_set_curves_list(Array<uint16_t> *out_group_ids, const char *curves);
+
+// ssl_add_clienthello_tlsext writes ClientHello extensions to |out|. It returns
+// true on success and false on failure. The |header_len| argument is the length
+// of the ClientHello written so far and is used to compute the padding length.
+// (It does not include the record header.)
+bool ssl_add_clienthello_tlsext(SSL_HANDSHAKE *hs, CBB *out, size_t header_len);
+
+bool ssl_add_serverhello_tlsext(SSL_HANDSHAKE *hs, CBB *out);
+bool ssl_parse_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                  const SSL_CLIENT_HELLO *client_hello);
+bool ssl_parse_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs);
+
+#define tlsext_tick_md EVP_sha256
+
+// ssl_process_ticket processes a session ticket from the client. It returns
+// one of:
+//   |ssl_ticket_aead_success|: |*out_session| is set to the parsed session and
+//       |*out_renew_ticket| is set to whether the ticket should be renewed.
+//   |ssl_ticket_aead_ignore_ticket|: |*out_renew_ticket| is set to whether a
+//       fresh ticket should be sent, but the given ticket cannot be used.
+//   |ssl_ticket_aead_retry|: the ticket could not be immediately decrypted.
+//       Retry later.
+//   |ssl_ticket_aead_error|: an error occured that is fatal to the connection.
+enum ssl_ticket_aead_result_t ssl_process_ticket(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    bool *out_renew_ticket, Span<const uint8_t> ticket,
+    Span<const uint8_t> session_id);
+
+// tls1_verify_channel_id processes |msg| as a Channel ID message, and verifies
+// the signature. If the key is valid, it saves the Channel ID and returns true.
+// Otherwise, it returns false.
+bool tls1_verify_channel_id(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+// tls1_write_channel_id generates a Channel ID message and puts the output in
+// |cbb|. |ssl->channel_id_private| must already be set before calling.  This
+// function returns true on success and false on error.
+bool tls1_write_channel_id(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// tls1_channel_id_hash computes the hash to be signed by Channel ID and writes
+// it to |out|, which must contain at least |EVP_MAX_MD_SIZE| bytes. It returns
+// true on success and false on failure.
+bool tls1_channel_id_hash(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len);
+
+// tls1_record_handshake_hashes_for_channel_id records the current handshake
+// hashes in |hs->new_session| so that Channel ID resumptions can sign that
+// data.
+bool tls1_record_handshake_hashes_for_channel_id(SSL_HANDSHAKE *hs);
+
+// ssl_do_channel_id_callback checks runs |hs->ssl->ctx->channel_id_cb| if
+// necessary. It returns true on success and false on fatal error. Note that, on
+// success, |hs->ssl->channel_id_private| may be unset, in which case the
+// operation should be retried later.
+bool ssl_do_channel_id_callback(SSL_HANDSHAKE *hs);
+
+// ssl_can_write returns whether |ssl| is allowed to write.
+bool ssl_can_write(const SSL *ssl);
+
+// ssl_can_read returns wheter |ssl| is allowed to read.
+bool ssl_can_read(const SSL *ssl);
+
+void ssl_get_current_time(const SSL *ssl, struct OPENSSL_timeval *out_clock);
+void ssl_ctx_get_current_time(const SSL_CTX *ctx,
+                              struct OPENSSL_timeval *out_clock);
+
+// ssl_reset_error_state resets state for |SSL_get_error|.
+void ssl_reset_error_state(SSL *ssl);
+
+// ssl_set_read_error sets |ssl|'s read half into an error state, saving the
+// current state of the error queue.
+void ssl_set_read_error(SSL *ssl);
+
+BSSL_NAMESPACE_END
+
+
+// Opaque C types.
+//
+// The following types are exported to C code as public typedefs, so they must
+// be defined outside of the namespace.
+
+// ssl_method_st backs the public |SSL_METHOD| type. It is a compatibility
+// structure to support the legacy version-locked methods.
+struct ssl_method_st {
+  // version, if non-zero, is the only protocol version acceptable to an
+  // SSL_CTX initialized from this method.
+  uint16_t version;
+  // method is the underlying SSL_PROTOCOL_METHOD that initializes the
+  // SSL_CTX.
+  const bssl::SSL_PROTOCOL_METHOD *method;
+  // x509_method contains pointers to functions that might deal with |X509|
+  // compatibility, or might be a no-op, depending on the application.
+  const bssl::SSL_X509_METHOD *x509_method;
+};
+
+struct ssl_ctx_st {
+  explicit ssl_ctx_st(const SSL_METHOD *ssl_method);
+  ssl_ctx_st(const ssl_ctx_st &) = delete;
+  ssl_ctx_st &operator=(const ssl_ctx_st &) = delete;
+
+  const bssl::SSL_PROTOCOL_METHOD *method = nullptr;
+  const bssl::SSL_X509_METHOD *x509_method = nullptr;
+
+  // lock is used to protect various operations on this object.
+  CRYPTO_MUTEX lock;
+
+  // conf_max_version is the maximum acceptable protocol version configured by
+  // |SSL_CTX_set_max_proto_version|. Note this version is normalized in DTLS
+  // and is further constrainted by |SSL_OP_NO_*|.
+  uint16_t conf_max_version = 0;
+
+  // conf_min_version is the minimum acceptable protocol version configured by
+  // |SSL_CTX_set_min_proto_version|. Note this version is normalized in DTLS
+  // and is further constrainted by |SSL_OP_NO_*|.
+  uint16_t conf_min_version = 0;
+
+  // quic_method is the method table corresponding to the QUIC hooks.
+  const SSL_QUIC_METHOD *quic_method = nullptr;
+
+  bssl::UniquePtr<bssl::SSLCipherPreferenceList> cipher_list;
+
+  X509_STORE *cert_store = nullptr;
+  LHASH_OF(SSL_SESSION) *sessions = nullptr;
+  // Most session-ids that will be cached, default is
+  // SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
+  unsigned long session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
+  SSL_SESSION *session_cache_head = nullptr;
+  SSL_SESSION *session_cache_tail = nullptr;
+
+  // handshakes_since_cache_flush is the number of successful handshakes since
+  // the last cache flush.
+  int handshakes_since_cache_flush = 0;
+
+  // This can have one of 2 values, ored together,
+  // SSL_SESS_CACHE_CLIENT,
+  // SSL_SESS_CACHE_SERVER,
+  // Default is SSL_SESSION_CACHE_SERVER, which means only
+  // SSL_accept which cache SSL_SESSIONS.
+  int session_cache_mode = SSL_SESS_CACHE_SERVER;
+
+  // session_timeout is the default lifetime for new sessions in TLS 1.2 and
+  // earlier, in seconds.
+  uint32_t session_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // session_psk_dhe_timeout is the default lifetime for new sessions in TLS
+  // 1.3, in seconds.
+  uint32_t session_psk_dhe_timeout = SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT;
+
+  // If this callback is not null, it will be called each time a session id is
+  // added to the cache.  If this function returns 1, it means that the
+  // callback will do a SSL_SESSION_free() when it has finished using it.
+  // Otherwise, on 0, it means the callback has finished with it. If
+  // remove_session_cb is not null, it will be called when a session-id is
+  // removed from the cache.  After the call, OpenSSL will SSL_SESSION_free()
+  // it.
+  int (*new_session_cb)(SSL *ssl, SSL_SESSION *sess) = nullptr;
+  void (*remove_session_cb)(SSL_CTX *ctx, SSL_SESSION *sess) = nullptr;
+  SSL_SESSION *(*get_session_cb)(SSL *ssl, const uint8_t *data, int len,
+                                 int *copy) = nullptr;
+
+  CRYPTO_refcount_t references = 1;
+
+  // if defined, these override the X509_verify_cert() calls
+  int (*app_verify_callback)(X509_STORE_CTX *store_ctx, void *arg) = nullptr;
+  void *app_verify_arg = nullptr;
+
+  ssl_verify_result_t (*custom_verify_callback)(SSL *ssl,
+                                                uint8_t *out_alert) = nullptr;
+
+  // Default password callback.
+  pem_password_cb *default_passwd_callback = nullptr;
+
+  // Default password callback user data.
+  void *default_passwd_callback_userdata = nullptr;
+
+  // get client cert callback
+  int (*client_cert_cb)(SSL *ssl, X509 **out_x509,
+                        EVP_PKEY **out_pkey) = nullptr;
+
+  // get channel id callback
+  void (*channel_id_cb)(SSL *ssl, EVP_PKEY **out_pkey) = nullptr;
+
+  CRYPTO_EX_DATA ex_data;
+
+  // Default values used when no per-SSL value is defined follow
+
+  void (*info_callback)(const SSL *ssl, int type, int value) = nullptr;
+
+  // what we put in client cert requests
+  bssl::UniquePtr<STACK_OF(CRYPTO_BUFFER)> client_CA;
+
+  // cached_x509_client_CA is a cache of parsed versions of the elements of
+  // |client_CA|.
+  STACK_OF(X509_NAME) *cached_x509_client_CA = nullptr;
+
+
+  // Default values to use in SSL structures follow (these are copied by
+  // SSL_new)
+
+  uint32_t options = 0;
+  // Disable the auto-chaining feature by default. wpa_supplicant relies on this
+  // feature, but require callers opt into it.
+  uint32_t mode = SSL_MODE_NO_AUTO_CHAIN;
+  uint32_t max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
+
+  bssl::UniquePtr<bssl::CERT> cert;
+
+  // callback that allows applications to peek at protocol messages
+  void (*msg_callback)(int write_p, int version, int content_type,
+                       const void *buf, size_t len, SSL *ssl,
+                       void *arg) = nullptr;
+  void *msg_callback_arg = nullptr;
+
+  int verify_mode = SSL_VERIFY_NONE;
+  int (*default_verify_callback)(int ok, X509_STORE_CTX *ctx) =
+      nullptr;  // called 'verify_callback' in the SSL
+
+  X509_VERIFY_PARAM *param = nullptr;
+
+  // select_certificate_cb is called before most ClientHello processing and
+  // before the decision whether to resume a session is made. See
+  // |ssl_select_cert_result_t| for details of the return values.
+  ssl_select_cert_result_t (*select_certificate_cb)(const SSL_CLIENT_HELLO *) =
+      nullptr;
+
+  // dos_protection_cb is called once the resumption decision for a ClientHello
+  // has been made. It returns one to continue the handshake or zero to
+  // abort.
+  int (*dos_protection_cb)(const SSL_CLIENT_HELLO *) = nullptr;
+
+  // Controls whether to verify certificates when resuming connections. They
+  // were already verified when the connection was first made, so the default is
+  // false. For now, this is only respected on clients, not servers.
+  bool reverify_on_resume = false;
+
+  // Maximum amount of data to send in one fragment. actual record size can be
+  // more than this due to padding and MAC overheads.
+  uint16_t max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+
+  // TLS extensions servername callback
+  int (*servername_callback)(SSL *, int *, void *) = nullptr;
+  void *servername_arg = nullptr;
+
+  // RFC 4507 session ticket keys. |ticket_key_current| may be NULL before the
+  // first handshake and |ticket_key_prev| may be NULL at any time.
+  // Automatically generated ticket keys are rotated as needed at handshake
+  // time. Hence, all access must be synchronized through |lock|.
+  bssl::UniquePtr<bssl::TicketKey> ticket_key_current;
+  bssl::UniquePtr<bssl::TicketKey> ticket_key_prev;
+
+  // Callback to support customisation of ticket key setting
+  int (*ticket_key_cb)(SSL *ssl, uint8_t *name, uint8_t *iv,
+                       EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc) = nullptr;
+
+  // Server-only: psk_identity_hint is the default identity hint to send in
+  // PSK-based key exchanges.
+  bssl::UniquePtr<char> psk_identity_hint;
+
+  unsigned (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
+                                  unsigned max_identity_len, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+  unsigned (*psk_server_callback)(SSL *ssl, const char *identity, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+
+
+  // Next protocol negotiation information
+  // (for experimental NPN extension).
+
+  // For a server, this contains a callback function by which the set of
+  // advertised protocols can be provided.
+  int (*next_protos_advertised_cb)(SSL *ssl, const uint8_t **out,
+                                   unsigned *out_len, void *arg) = nullptr;
+  void *next_protos_advertised_cb_arg = nullptr;
+  // For a client, this contains a callback function that selects the
+  // next protocol from the list provided by the server.
+  int (*next_proto_select_cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                              const uint8_t *in, unsigned in_len,
+                              void *arg) = nullptr;
+  void *next_proto_select_cb_arg = nullptr;
+
+  // ALPN information
+  // (we are in the process of transitioning from NPN to ALPN.)
+
+  // For a server, this contains a callback function that allows the
+  // server to select the protocol for the connection.
+  //   out: on successful return, this must point to the raw protocol
+  //        name (without the length prefix).
+  //   outlen: on successful return, this contains the length of |*out|.
+  //   in: points to the client's list of supported protocols in
+  //       wire-format.
+  //   inlen: the length of |in|.
+  int (*alpn_select_cb)(SSL *ssl, const uint8_t **out, uint8_t *out_len,
+                        const uint8_t *in, unsigned in_len,
+                        void *arg) = nullptr;
+  void *alpn_select_cb_arg = nullptr;
+
+  // For a client, this contains the list of supported protocols in wire
+  // format.
+  bssl::Array<uint8_t> alpn_client_proto_list;
+
+  // SRTP profiles we are willing to do from RFC 5764
+  bssl::UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> srtp_profiles;
+
+  // Defined compression algorithms for certificates.
+  bssl::GrowableArray<bssl::CertCompressionAlg> cert_compression_algs;
+
+  // Supported group values inherited by SSL structure
+  bssl::Array<uint16_t> supported_group_list;
+
+  // The client's Channel ID private key.
+  bssl::UniquePtr<EVP_PKEY> channel_id_private;
+
+  // keylog_callback, if not NULL, is the key logging callback. See
+  // |SSL_CTX_set_keylog_callback|.
+  void (*keylog_callback)(const SSL *ssl, const char *line) = nullptr;
+
+  // current_time_cb, if not NULL, is the function to use to get the current
+  // time. It sets |*out_clock| to the current time. The |ssl| argument is
+  // always NULL. See |SSL_CTX_set_current_time_cb|.
+  void (*current_time_cb)(const SSL *ssl, struct timeval *out_clock) = nullptr;
+
+  // pool is used for all |CRYPTO_BUFFER|s in case we wish to share certificate
+  // memory.
+  CRYPTO_BUFFER_POOL *pool = nullptr;
+
+  // ticket_aead_method contains function pointers for opening and sealing
+  // session tickets.
+  const SSL_TICKET_AEAD_METHOD *ticket_aead_method = nullptr;
+
+  // legacy_ocsp_callback implements an OCSP-related callback for OpenSSL
+  // compatibility.
+  int (*legacy_ocsp_callback)(SSL *ssl, void *arg) = nullptr;
+  void *legacy_ocsp_callback_arg = nullptr;
+
+  // verify_sigalgs, if not empty, is the set of signature algorithms
+  // accepted from the peer in decreasing order of preference.
+  bssl::Array<uint16_t> verify_sigalgs;
+
+  // retain_only_sha256_of_client_certs is true if we should compute the SHA256
+  // hash of the peer's certificate and then discard it to save memory and
+  // session space. Only effective on the server side.
+  bool retain_only_sha256_of_client_certs : 1;
+
+  // quiet_shutdown is true if the connection should not send a close_notify on
+  // shutdown.
+  bool quiet_shutdown : 1;
+
+  // ocsp_stapling_enabled is only used by client connections and indicates
+  // whether OCSP stapling will be requested.
+  bool ocsp_stapling_enabled : 1;
+
+  // If true, a client will request certificate timestamps.
+  bool signed_cert_timestamps_enabled : 1;
+
+  // channel_id_enabled is whether Channel ID is enabled. For a server, means
+  // that we'll accept Channel IDs from clients.  For a client, means that we'll
+  // advertise support.
+  bool channel_id_enabled : 1;
+
+  // grease_enabled is whether draft-davidben-tls-grease-01 is enabled.
+  bool grease_enabled : 1;
+
+  // allow_unknown_alpn_protos is whether the client allows unsolicited ALPN
+  // protocols from the peer.
+  bool allow_unknown_alpn_protos : 1;
+
+  // ed25519_enabled is whether Ed25519 is advertised in the handshake.
+  bool ed25519_enabled : 1;
+
+  // false_start_allowed_without_alpn is whether False Start (if
+  // |SSL_MODE_ENABLE_FALSE_START| is enabled) is allowed without ALPN.
+  bool false_start_allowed_without_alpn : 1;
+
+  // ignore_tls13_downgrade is whether a connection should continue when the
+  // server random signals a downgrade.
+  bool ignore_tls13_downgrade:1;
+
+  // handoff indicates that a server should stop after receiving the
+  // ClientHello and pause the handshake in such a way that |SSL_get_error|
+  // returns |SSL_ERROR_HANDOFF|.
+  bool handoff : 1;
+
+  // If enable_early_data is true, early data can be sent and accepted.
+  bool enable_early_data : 1;
+
+ private:
+  ~ssl_ctx_st();
+  friend void SSL_CTX_free(SSL_CTX *);
+};
+
+struct ssl_st {
+  explicit ssl_st(SSL_CTX *ctx_arg);
+  ssl_st(const ssl_st &) = delete;
+  ssl_st &operator=(const ssl_st &) = delete;
+  ~ssl_st();
+
+  // method is the method table corresponding to the current protocol (DTLS or
+  // TLS).
+  const bssl::SSL_PROTOCOL_METHOD *method = nullptr;
+
+  // config is a container for handshake configuration.  Accesses to this field
+  // should check for nullptr, since configuration may be shed after the
+  // handshake completes.  (If you have the |SSL_HANDSHAKE| object at hand, use
+  // that instead, and skip the null check.)
+  bssl::UniquePtr<bssl::SSL_CONFIG> config;
+
+  // version is the protocol version.
+  uint16_t version = 0;
+
+  uint16_t max_send_fragment = 0;
+
+  // There are 2 BIO's even though they are normally both the same. This is so
+  // data can be read and written to different handlers
+
+  bssl::UniquePtr<BIO> rbio;  // used by SSL_read
+  bssl::UniquePtr<BIO> wbio;  // used by SSL_write
+
+  // do_handshake runs the handshake. On completion, it returns |ssl_hs_ok|.
+  // Otherwise, it returns a value corresponding to what operation is needed to
+  // progress.
+  bssl::ssl_hs_wait_t (*do_handshake)(bssl::SSL_HANDSHAKE *hs) = nullptr;
+
+  bssl::SSL3_STATE *s3 = nullptr;   // TLS variables
+  bssl::DTLS1_STATE *d1 = nullptr;  // DTLS variables
+
+  // callback that allows applications to peek at protocol messages
+  void (*msg_callback)(int write_p, int version, int content_type,
+                       const void *buf, size_t len, SSL *ssl,
+                       void *arg) = nullptr;
+  void *msg_callback_arg = nullptr;
+
+  // session info
+
+  // initial_timeout_duration_ms is the default DTLS timeout duration in
+  // milliseconds. It's used to initialize the timer any time it's restarted.
+  //
+  // RFC 6347 states that implementations SHOULD use an initial timer value of 1
+  // second.
+  unsigned initial_timeout_duration_ms = 1000;
+
+  // session is the configured session to be offered by the client. This session
+  // is immutable.
+  bssl::UniquePtr<SSL_SESSION> session;
+
+  void (*info_callback)(const SSL *ssl, int type, int value) = nullptr;
+
+  bssl::UniquePtr<SSL_CTX> ctx;
+
+  // session_ctx is the |SSL_CTX| used for the session cache and related
+  // settings.
+  bssl::UniquePtr<SSL_CTX> session_ctx;
+
+  // extra application data
+  CRYPTO_EX_DATA ex_data;
+
+  uint32_t options = 0;  // protocol behaviour
+  uint32_t mode = 0;     // API behaviour
+  uint32_t max_cert_list = 0;
+  bssl::UniquePtr<char> hostname;
+
+  // quic_method is the method table corresponding to the QUIC hooks.
+  const SSL_QUIC_METHOD *quic_method = nullptr;
+
+  // renegotiate_mode controls how peer renegotiation attempts are handled.
+  ssl_renegotiate_mode_t renegotiate_mode = ssl_renegotiate_never;
+
+  // server is true iff the this SSL* is the server half. Note: before the SSL*
+  // is initialized by either SSL_set_accept_state or SSL_set_connect_state,
+  // the side is not determined. In this state, server is always false.
+  bool server : 1;
+
+  // quiet_shutdown is true if the connection should not send a close_notify on
+  // shutdown.
+  bool quiet_shutdown : 1;
+
+  // If enable_early_data is true, early data can be sent and accepted.
+  bool enable_early_data : 1;
+};
+
+struct ssl_session_st {
+  explicit ssl_session_st(const bssl::SSL_X509_METHOD *method);
+  ssl_session_st(const ssl_session_st &) = delete;
+  ssl_session_st &operator=(const ssl_session_st &) = delete;
+
+  CRYPTO_refcount_t references = 1;
+
+  // ssl_version is the (D)TLS version that established the session.
+  uint16_t ssl_version = 0;
+
+  // group_id is the ID of the ECDH group used to establish this session or zero
+  // if not applicable or unknown.
+  uint16_t group_id = 0;
+
+  // peer_signature_algorithm is the signature algorithm used to authenticate
+  // the peer, or zero if not applicable or unknown.
+  uint16_t peer_signature_algorithm = 0;
+
+  // master_key, in TLS 1.2 and below, is the master secret associated with the
+  // session. In TLS 1.3 and up, it is the resumption secret.
+  int master_key_length = 0;
+  uint8_t master_key[SSL_MAX_MASTER_KEY_LENGTH] = {0};
+
+  // session_id - valid?
+  unsigned session_id_length = 0;
+  uint8_t session_id[SSL_MAX_SSL_SESSION_ID_LENGTH] = {0};
+  // this is used to determine whether the session is being reused in
+  // the appropriate context. It is up to the application to set this,
+  // via SSL_new
+  uint8_t sid_ctx_length = 0;
+  uint8_t sid_ctx[SSL_MAX_SID_CTX_LENGTH] = {0};
+
+  bssl::UniquePtr<char> psk_identity;
+
+  // certs contains the certificate chain from the peer, starting with the leaf
+  // certificate.
+  bssl::UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs;
+
+  const bssl::SSL_X509_METHOD *x509_method = nullptr;
+
+  // x509_peer is the peer's certificate.
+  X509 *x509_peer = nullptr;
+
+  // x509_chain is the certificate chain sent by the peer. NOTE: for historical
+  // reasons, when a client (so the peer is a server), the chain includes
+  // |peer|, but when a server it does not.
+  STACK_OF(X509) *x509_chain = nullptr;
+
+  // x509_chain_without_leaf is a lazily constructed copy of |x509_chain| that
+  // omits the leaf certificate. This exists because OpenSSL, historically,
+  // didn't include the leaf certificate in the chain for a server, but did for
+  // a client. The |x509_chain| always includes it and, if an API call requires
+  // a chain without, it is stored here.
+  STACK_OF(X509) *x509_chain_without_leaf = nullptr;
+
+  // verify_result is the result of certificate verification in the case of
+  // non-fatal certificate errors.
+  long verify_result = X509_V_ERR_INVALID_CALL;
+
+  // timeout is the lifetime of the session in seconds, measured from |time|.
+  // This is renewable up to |auth_timeout|.
+  uint32_t timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // auth_timeout is the non-renewable lifetime of the session in seconds,
+  // measured from |time|.
+  uint32_t auth_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // time is the time the session was issued, measured in seconds from the UNIX
+  // epoch.
+  uint64_t time = 0;
+
+  const SSL_CIPHER *cipher = nullptr;
+
+  CRYPTO_EX_DATA ex_data;  // application specific data
+
+  // These are used to make removal of session-ids more efficient and to
+  // implement a maximum cache size.
+  SSL_SESSION *prev = nullptr, *next = nullptr;
+
+  bssl::Array<uint8_t> ticket;
+
+  bssl::UniquePtr<CRYPTO_BUFFER> signed_cert_timestamp_list;
+
+  // The OCSP response that came with the session.
+  bssl::UniquePtr<CRYPTO_BUFFER> ocsp_response;
+
+  // peer_sha256 contains the SHA-256 hash of the peer's certificate if
+  // |peer_sha256_valid| is true.
+  uint8_t peer_sha256[SHA256_DIGEST_LENGTH] = {0};
+
+  // original_handshake_hash contains the handshake hash (either SHA-1+MD5 or
+  // SHA-2, depending on TLS version) for the original, full handshake that
+  // created a session. This is used by Channel IDs during resumption.
+  uint8_t original_handshake_hash[EVP_MAX_MD_SIZE] = {0};
+  uint8_t original_handshake_hash_len = 0;
+
+  uint32_t ticket_lifetime_hint = 0;  // Session lifetime hint in seconds
+
+  uint32_t ticket_age_add = 0;
+
+  // ticket_max_early_data is the maximum amount of data allowed to be sent as
+  // early data. If zero, 0-RTT is disallowed.
+  uint32_t ticket_max_early_data = 0;
+
+  // early_alpn is the ALPN protocol from the initial handshake. This is only
+  // stored for TLS 1.3 and above in order to enforce ALPN matching for 0-RTT
+  // resumptions.
+  bssl::Array<uint8_t> early_alpn;
+
+  // extended_master_secret is whether the master secret in this session was
+  // generated using EMS and thus isn't vulnerable to the Triple Handshake
+  // attack.
+  bool extended_master_secret : 1;
+
+  // peer_sha256_valid is whether |peer_sha256| is valid.
+  bool peer_sha256_valid : 1;  // Non-zero if peer_sha256 is valid
+
+  // not_resumable is used to indicate that session resumption is disallowed.
+  bool not_resumable : 1;
+
+  // ticket_age_add_valid is whether |ticket_age_add| is valid.
+  bool ticket_age_add_valid : 1;
+
+  // is_server is whether this session was created by a server.
+  bool is_server : 1;
+
+ private:
+  ~ssl_session_st();
+  friend void SSL_SESSION_free(SSL_SESSION *);
+};
+
+
+#endif  // OPENSSL_HEADER_SSL_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h.grpc_back
new file mode 100644
index 0000000..bf4dd2f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/internal.h.grpc_back	
@@ -0,0 +1,3555 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#ifndef OPENSSL_HEADER_SSL_INTERNAL_H
+#define OPENSSL_HEADER_SSL_INTERNAL_H
+
+#include <openssl/base.h>
+
+#include <stdlib.h>
+
+#include <limits>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include <openssl/aead.h>
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/span.h>
+#include <openssl/ssl.h>
+#include <openssl/stack.h>
+
+#include "../crypto/err/internal.h"
+#include "../crypto/internal.h"
+
+
+#if defined(OPENSSL_WINDOWS)
+// Windows defines struct timeval in winsock2.h.
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#else
+#include <sys/time.h>
+#endif
+
+
+BSSL_NAMESPACE_BEGIN
+
+struct SSL_CONFIG;
+struct SSL_HANDSHAKE;
+struct SSL_PROTOCOL_METHOD;
+struct SSL_X509_METHOD;
+
+// C++ utilities.
+
+// New behaves like |new| but uses |OPENSSL_malloc| for memory allocation. It
+// returns nullptr on allocation error. It only implements single-object
+// allocation and not new T[n].
+//
+// Note: unlike |new|, this does not support non-public constructors.
+template <typename T, typename... Args>
+T *New(Args &&... args) {
+  void *t = OPENSSL_malloc(sizeof(T));
+  if (t == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+  return new (t) T(std::forward<Args>(args)...);
+}
+
+// Delete behaves like |delete| but uses |OPENSSL_free| to release memory.
+//
+// Note: unlike |delete| this does not support non-public destructors.
+template <typename T>
+void Delete(T *t) {
+  if (t != nullptr) {
+    t->~T();
+    OPENSSL_free(t);
+  }
+}
+
+// All types with kAllowUniquePtr set may be used with UniquePtr. Other types
+// may be C structs which require a |BORINGSSL_MAKE_DELETER| registration.
+namespace internal {
+template <typename T>
+struct DeleterImpl<T, typename std::enable_if<T::kAllowUniquePtr>::type> {
+  static void Free(T *t) { Delete(t); }
+};
+}  // namespace internal
+
+// MakeUnique behaves like |std::make_unique| but returns nullptr on allocation
+// error.
+template <typename T, typename... Args>
+UniquePtr<T> MakeUnique(Args &&... args) {
+  return UniquePtr<T>(New<T>(std::forward<Args>(args)...));
+}
+
+#if defined(BORINGSSL_ALLOW_CXX_RUNTIME)
+#define HAS_VIRTUAL_DESTRUCTOR
+#define PURE_VIRTUAL = 0
+#else
+// HAS_VIRTUAL_DESTRUCTOR should be declared in any base class which defines a
+// virtual destructor. This avoids a dependency on |_ZdlPv| and prevents the
+// class from being used with |delete|.
+#define HAS_VIRTUAL_DESTRUCTOR \
+  void operator delete(void *) { abort(); }
+
+// PURE_VIRTUAL should be used instead of = 0 when defining pure-virtual
+// functions. This avoids a dependency on |__cxa_pure_virtual| but loses
+// compile-time checking.
+#define PURE_VIRTUAL \
+  { abort(); }
+#endif
+
+// CONSTEXPR_ARRAY works around a VS 2015 bug where ranged for loops don't work
+// on constexpr arrays.
+#if defined(_MSC_VER) && !defined(__clang__) && _MSC_VER < 1910
+#define CONSTEXPR_ARRAY const
+#else
+#define CONSTEXPR_ARRAY constexpr
+#endif
+
+// Array<T> is an owning array of elements of |T|.
+template <typename T>
+class Array {
+ public:
+  // Array's default constructor creates an empty array.
+  Array() {}
+  Array(const Array &) = delete;
+  Array(Array &&other) { *this = std::move(other); }
+
+  ~Array() { Reset(); }
+
+  Array &operator=(const Array &) = delete;
+  Array &operator=(Array &&other) {
+    Reset();
+    other.Release(&data_, &size_);
+    return *this;
+  }
+
+  const T *data() const { return data_; }
+  T *data() { return data_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  const T &operator[](size_t i) const { return data_[i]; }
+  T &operator[](size_t i) { return data_[i]; }
+
+  T *begin() { return data_; }
+  const T *cbegin() const { return data_; }
+  T *end() { return data_ + size_; }
+  const T *cend() const { return data_ + size_; }
+
+  void Reset() { Reset(nullptr, 0); }
+
+  // Reset releases the current contents of the array and takes ownership of the
+  // raw pointer supplied by the caller.
+  void Reset(T *new_data, size_t new_size) {
+    for (size_t i = 0; i < size_; i++) {
+      data_[i].~T();
+    }
+    OPENSSL_free(data_);
+    data_ = new_data;
+    size_ = new_size;
+  }
+
+  // Release releases ownership of the array to a raw pointer supplied by the
+  // caller.
+  void Release(T **out, size_t *out_size) {
+    *out = data_;
+    *out_size = size_;
+    data_ = nullptr;
+    size_ = 0;
+  }
+
+  // Init replaces the array with a newly-allocated array of |new_size|
+  // default-constructed copies of |T|. It returns true on success and false on
+  // error.
+  //
+  // Note that if |T| is a primitive type like |uint8_t|, it is uninitialized.
+  bool Init(size_t new_size) {
+    Reset();
+    if (new_size == 0) {
+      return true;
+    }
+
+    if (new_size > std::numeric_limits<size_t>::max() / sizeof(T)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return false;
+    }
+    data_ = reinterpret_cast<T *>(OPENSSL_malloc(new_size * sizeof(T)));
+    if (data_ == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    size_ = new_size;
+    for (size_t i = 0; i < size_; i++) {
+      new (&data_[i]) T;
+    }
+    return true;
+  }
+
+  // CopyFrom replaces the array with a newly-allocated copy of |in|. It returns
+  // true on success and false on error.
+  bool CopyFrom(Span<const T> in) {
+    if (!Init(in.size())) {
+      return false;
+    }
+    OPENSSL_memcpy(data_, in.data(), sizeof(T) * in.size());
+    return true;
+  }
+
+  // Shrink shrinks the stored size of the array to |new_size|. It crashes if
+  // the new size is larger. Note this does not shrink the allocation itself.
+  void Shrink(size_t new_size) {
+    if (new_size > size_) {
+      abort();
+    }
+    size_ = new_size;
+  }
+
+ private:
+  T *data_ = nullptr;
+  size_t size_ = 0;
+};
+
+// GrowableArray<T> is an array that owns elements of |T|, backed by an
+// Array<T>. When necessary, pushing will automatically trigger a resize.
+//
+// Note, for simplicity, this class currently differs from |std::vector| in that
+// |T| must be efficiently default-constructible. Allocated elements beyond the
+// end of the array are constructed and destructed.
+template <typename T>
+class GrowableArray {
+ public:
+  GrowableArray() = default;
+  GrowableArray(const GrowableArray &) = delete;
+  GrowableArray(GrowableArray &&other) { *this = std::move(other); }
+  ~GrowableArray() {}
+
+  GrowableArray &operator=(const GrowableArray &) = delete;
+  GrowableArray &operator=(GrowableArray &&other) {
+    size_ = other.size_;
+    other.size_ = 0;
+    array_ = std::move(other.array_);
+    return *this;
+  }
+
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+
+  const T &operator[](size_t i) const { return array_[i]; }
+  T &operator[](size_t i) { return array_[i]; }
+
+  T *begin() { return array_.data(); }
+  const T *cbegin() const { return array_.data(); }
+  T *end() { return array_.data() + size_; }
+  const T *cend() const { return array_.data() + size_; }
+
+  // Push adds |elem| at the end of the internal array, growing if necessary. It
+  // returns false when allocation fails.
+  bool Push(T elem) {
+    if (!MaybeGrow()) {
+      return false;
+    }
+    array_[size_] = std::move(elem);
+    size_++;
+    return true;
+  }
+
+  // CopyFrom replaces the contents of the array with a copy of |in|. It returns
+  // true on success and false on allocation error.
+  bool CopyFrom(Span<const T> in) {
+    if (!array_.CopyFrom(in)) {
+      return false;
+    }
+    size_ = in.size();
+    return true;
+  }
+
+ private:
+  // If there is no room for one more element, creates a new backing array with
+  // double the size of the old one and copies elements over.
+  bool MaybeGrow() {
+    if (array_.size() == 0) {
+      return array_.Init(kDefaultSize);
+    }
+    // No need to grow if we have room for one more T.
+    if (size_ < array_.size()) {
+      return true;
+    }
+    // Double the array's size if it's safe to do so.
+    if (array_.size() > std::numeric_limits<size_t>::max() / 2) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return false;
+    }
+    Array<T> new_array;
+    if (!new_array.Init(array_.size() * 2)) {
+      return false;
+    }
+    for (size_t i = 0; i < array_.size(); i++) {
+      new_array[i] = std::move(array_[i]);
+    }
+    array_ = std::move(new_array);
+
+    return true;
+  }
+
+  // |size_| is the number of elements stored in this GrowableArray.
+  size_t size_ = 0;
+  // |array_| is the backing array. Note that |array_.size()| is this
+  // GrowableArray's current capacity and that |size_ <= array_.size()|.
+  Array<T> array_;
+  // |kDefaultSize| is the default initial size of the backing array.
+  static constexpr size_t kDefaultSize = 16;
+};
+
+// CBBFinishArray behaves like |CBB_finish| but stores the result in an Array.
+OPENSSL_EXPORT bool CBBFinishArray(CBB *cbb, Array<uint8_t> *out);
+
+
+// Protocol versions.
+//
+// Due to DTLS's historical wire version differences, we maintain two notions of
+// version.
+//
+// The "version" or "wire version" is the actual 16-bit value that appears on
+// the wire. It uniquely identifies a version and is also used at API
+// boundaries. The set of supported versions differs between TLS and DTLS. Wire
+// versions are opaque values and may not be compared numerically.
+//
+// The "protocol version" identifies the high-level handshake variant being
+// used. DTLS versions map to the corresponding TLS versions. Protocol versions
+// are sequential and may be compared numerically.
+
+// ssl_protocol_version_from_wire sets |*out| to the protocol version
+// corresponding to wire version |version| and returns true. If |version| is not
+// a valid TLS or DTLS version, it returns false.
+//
+// Note this simultaneously handles both DTLS and TLS. Use one of the
+// higher-level functions below for most operations.
+bool ssl_protocol_version_from_wire(uint16_t *out, uint16_t version);
+
+// ssl_get_version_range sets |*out_min_version| and |*out_max_version| to the
+// minimum and maximum enabled protocol versions, respectively.
+bool ssl_get_version_range(const SSL_HANDSHAKE *hs, uint16_t *out_min_version,
+                           uint16_t *out_max_version);
+
+// ssl_supports_version returns whether |hs| supports |version|.
+bool ssl_supports_version(SSL_HANDSHAKE *hs, uint16_t version);
+
+// ssl_method_supports_version returns whether |method| supports |version|.
+bool ssl_method_supports_version(const SSL_PROTOCOL_METHOD *method,
+                                 uint16_t version);
+
+// ssl_add_supported_versions writes the supported versions of |hs| to |cbb|, in
+// decreasing preference order.
+bool ssl_add_supported_versions(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// ssl_negotiate_version negotiates a common version based on |hs|'s preferences
+// and the peer preference list in |peer_versions|. On success, it returns true
+// and sets |*out_version| to the selected version. Otherwise, it returns false
+// and sets |*out_alert| to an alert to send.
+bool ssl_negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                           uint16_t *out_version, const CBS *peer_versions);
+
+// ssl_protocol_version returns |ssl|'s protocol version. It is an error to
+// call this function before the version is determined.
+uint16_t ssl_protocol_version(const SSL *ssl);
+
+// Cipher suites.
+
+BSSL_NAMESPACE_END
+
+struct ssl_cipher_st {
+  // name is the OpenSSL name for the cipher.
+  const char *name;
+  // standard_name is the IETF name for the cipher.
+  const char *standard_name;
+  // id is the cipher suite value bitwise OR-d with 0x03000000.
+  uint32_t id;
+
+  // algorithm_* determine the cipher suite. See constants below for the values.
+  uint32_t algorithm_mkey;
+  uint32_t algorithm_auth;
+  uint32_t algorithm_enc;
+  uint32_t algorithm_mac;
+  uint32_t algorithm_prf;
+};
+
+BSSL_NAMESPACE_BEGIN
+
+// Bits for |algorithm_mkey| (key exchange algorithm).
+#define SSL_kRSA 0x00000001u
+#define SSL_kECDHE 0x00000002u
+// SSL_kPSK is only set for plain PSK, not ECDHE_PSK.
+#define SSL_kPSK 0x00000004u
+#define SSL_kGENERIC 0x00000008u
+
+// Bits for |algorithm_auth| (server authentication).
+#define SSL_aRSA 0x00000001u
+#define SSL_aECDSA 0x00000002u
+// SSL_aPSK is set for both PSK and ECDHE_PSK.
+#define SSL_aPSK 0x00000004u
+#define SSL_aGENERIC 0x00000008u
+
+#define SSL_aCERT (SSL_aRSA | SSL_aECDSA)
+
+// Bits for |algorithm_enc| (symmetric encryption).
+#define SSL_3DES 0x00000001u
+#define SSL_AES128 0x00000002u
+#define SSL_AES256 0x00000004u
+#define SSL_AES128GCM 0x00000008u
+#define SSL_AES256GCM 0x00000010u
+#define SSL_eNULL 0x00000020u
+#define SSL_CHACHA20POLY1305 0x00000040u
+
+#define SSL_AES (SSL_AES128 | SSL_AES256 | SSL_AES128GCM | SSL_AES256GCM)
+
+// Bits for |algorithm_mac| (symmetric authentication).
+#define SSL_SHA1 0x00000001u
+// SSL_AEAD is set for all AEADs.
+#define SSL_AEAD 0x00000002u
+
+// Bits for |algorithm_prf| (handshake digest).
+#define SSL_HANDSHAKE_MAC_DEFAULT 0x1
+#define SSL_HANDSHAKE_MAC_SHA256 0x2
+#define SSL_HANDSHAKE_MAC_SHA384 0x4
+
+// SSL_MAX_MD_SIZE is size of the largest hash function used in TLS, SHA-384.
+#define SSL_MAX_MD_SIZE 48
+
+// An SSLCipherPreferenceList contains a list of SSL_CIPHERs with equal-
+// preference groups. For TLS clients, the groups are moot because the server
+// picks the cipher and groups cannot be expressed on the wire. However, for
+// servers, the equal-preference groups allow the client's preferences to be
+// partially respected. (This only has an effect with
+// SSL_OP_CIPHER_SERVER_PREFERENCE).
+//
+// The equal-preference groups are expressed by grouping SSL_CIPHERs together.
+// All elements of a group have the same priority: no ordering is expressed
+// within a group.
+//
+// The values in |ciphers| are in one-to-one correspondence with
+// |in_group_flags|. (That is, sk_SSL_CIPHER_num(ciphers) is the number of
+// bytes in |in_group_flags|.) The bytes in |in_group_flags| are either 1, to
+// indicate that the corresponding SSL_CIPHER is not the last element of a
+// group, or 0 to indicate that it is.
+//
+// For example, if |in_group_flags| contains all zeros then that indicates a
+// traditional, fully-ordered preference. Every SSL_CIPHER is the last element
+// of the group (i.e. they are all in a one-element group).
+//
+// For a more complex example, consider:
+//   ciphers:        A  B  C  D  E  F
+//   in_group_flags: 1  1  0  0  1  0
+//
+// That would express the following, order:
+//
+//    A         E
+//    B -> D -> F
+//    C
+struct SSLCipherPreferenceList {
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSLCipherPreferenceList() = default;
+  ~SSLCipherPreferenceList();
+
+  bool Init(UniquePtr<STACK_OF(SSL_CIPHER)> ciphers,
+            Span<const bool> in_group_flags);
+  bool Init(const SSLCipherPreferenceList &);
+
+  void Remove(const SSL_CIPHER *cipher);
+
+  UniquePtr<STACK_OF(SSL_CIPHER)> ciphers;
+  bool *in_group_flags = nullptr;
+};
+
+// AllCiphers returns an array of all supported ciphers, sorted by id.
+Span<const SSL_CIPHER> AllCiphers();
+
+// ssl_cipher_get_evp_aead sets |*out_aead| to point to the correct EVP_AEAD
+// object for |cipher| protocol version |version|. It sets |*out_mac_secret_len|
+// and |*out_fixed_iv_len| to the MAC key length and fixed IV length,
+// respectively. The MAC key length is zero except for legacy block and stream
+// ciphers. It returns true on success and false on error.
+bool ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead,
+                             size_t *out_mac_secret_len,
+                             size_t *out_fixed_iv_len, const SSL_CIPHER *cipher,
+                             uint16_t version, bool is_dtls);
+
+// ssl_get_handshake_digest returns the |EVP_MD| corresponding to |version| and
+// |cipher|.
+const EVP_MD *ssl_get_handshake_digest(uint16_t version,
+                                       const SSL_CIPHER *cipher);
+
+// ssl_create_cipher_list evaluates |rule_str|. It sets |*out_cipher_list| to a
+// newly-allocated |SSLCipherPreferenceList| containing the result. It returns
+// true on success and false on failure. If |strict| is true, nonsense will be
+// rejected. If false, nonsense will be silently ignored. An empty result is
+// considered an error regardless of |strict|.
+bool ssl_create_cipher_list(UniquePtr<SSLCipherPreferenceList> *out_cipher_list,
+                            const char *rule_str, bool strict);
+
+// ssl_cipher_get_value returns the cipher suite id of |cipher|.
+uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher);
+
+// ssl_cipher_auth_mask_for_key returns the mask of cipher |algorithm_auth|
+// values suitable for use with |key| in TLS 1.2 and below.
+uint32_t ssl_cipher_auth_mask_for_key(const EVP_PKEY *key);
+
+// ssl_cipher_uses_certificate_auth returns whether |cipher| authenticates the
+// server and, optionally, the client with a certificate.
+bool ssl_cipher_uses_certificate_auth(const SSL_CIPHER *cipher);
+
+// ssl_cipher_requires_server_key_exchange returns whether |cipher| requires a
+// ServerKeyExchange message.
+//
+// This function may return false while still allowing |cipher| an optional
+// ServerKeyExchange. This is the case for plain PSK ciphers.
+bool ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher);
+
+// ssl_cipher_get_record_split_len, for TLS 1.0 CBC mode ciphers, returns the
+// length of an encrypted 1-byte record, for use in record-splitting. Otherwise
+// it returns zero.
+size_t ssl_cipher_get_record_split_len(const SSL_CIPHER *cipher);
+
+// ssl_choose_tls13_cipher returns an |SSL_CIPHER| corresponding with the best
+// available from |cipher_suites| compatible with |version| and |group_id|. It
+// returns NULL if there isn't a compatible cipher.
+const SSL_CIPHER *ssl_choose_tls13_cipher(CBS cipher_suites, uint16_t version,
+                                          uint16_t group_id);
+
+
+// Transcript layer.
+
+// SSLTranscript maintains the handshake transcript as a combination of a
+// buffer and running hash.
+class SSLTranscript {
+ public:
+  SSLTranscript();
+  ~SSLTranscript();
+
+  // Init initializes the handshake transcript. If called on an existing
+  // transcript, it resets the transcript and hash. It returns true on success
+  // and false on failure.
+  bool Init();
+
+  // InitHash initializes the handshake hash based on the PRF and contents of
+  // the handshake transcript. Subsequent calls to |Update| will update the
+  // rolling hash. It returns one on success and zero on failure. It is an error
+  // to call this function after the handshake buffer is released.
+  bool InitHash(uint16_t version, const SSL_CIPHER *cipher);
+
+  // UpdateForHelloRetryRequest resets the rolling hash with the
+  // HelloRetryRequest construction. It returns true on success and false on
+  // failure. It is an error to call this function before the handshake buffer
+  // is released.
+  bool UpdateForHelloRetryRequest();
+
+  // CopyToHashContext initializes |ctx| with |digest| and the data thus far in
+  // the transcript. It returns true on success and false on failure. If the
+  // handshake buffer is still present, |digest| may be any supported digest.
+  // Otherwise, |digest| must match the transcript hash.
+  bool CopyToHashContext(EVP_MD_CTX *ctx, const EVP_MD *digest);
+
+  Span<const uint8_t> buffer() {
+    return MakeConstSpan(reinterpret_cast<const uint8_t *>(buffer_->data),
+                         buffer_->length);
+  }
+
+  // FreeBuffer releases the handshake buffer. Subsequent calls to
+  // |Update| will not update the handshake buffer.
+  void FreeBuffer();
+
+  // DigestLen returns the length of the PRF hash.
+  size_t DigestLen() const;
+
+  // Digest returns the PRF hash. For TLS 1.1 and below, this is
+  // |EVP_md5_sha1|.
+  const EVP_MD *Digest() const;
+
+  // Update adds |in| to the handshake buffer and handshake hash, whichever is
+  // enabled. It returns true on success and false on failure.
+  bool Update(Span<const uint8_t> in);
+
+  // GetHash writes the handshake hash to |out| which must have room for at
+  // least |DigestLen| bytes. On success, it returns true and sets |*out_len| to
+  // the number of bytes written. Otherwise, it returns false.
+  bool GetHash(uint8_t *out, size_t *out_len);
+
+  // GetFinishedMAC computes the MAC for the Finished message into the bytes
+  // pointed by |out| and writes the number of bytes to |*out_len|. |out| must
+  // have room for |EVP_MAX_MD_SIZE| bytes. It returns true on success and false
+  // on failure.
+  bool GetFinishedMAC(uint8_t *out, size_t *out_len, const SSL_SESSION *session,
+                      bool from_server);
+
+ private:
+  // buffer_, if non-null, contains the handshake transcript.
+  UniquePtr<BUF_MEM> buffer_;
+  // hash, if initialized with an |EVP_MD|, maintains the handshake hash.
+  ScopedEVP_MD_CTX hash_;
+};
+
+// tls1_prf computes the PRF function for |ssl|. It fills |out|, using |secret|
+// as the secret and |label| as the label. |seed1| and |seed2| are concatenated
+// to form the seed parameter. It returns true on success and false on failure.
+bool tls1_prf(const EVP_MD *digest, Span<uint8_t> out,
+              Span<const uint8_t> secret, Span<const char> label,
+              Span<const uint8_t> seed1, Span<const uint8_t> seed2);
+
+
+// Encryption layer.
+
+// SSLAEADContext contains information about an AEAD that is being used to
+// encrypt an SSL connection.
+class SSLAEADContext {
+ public:
+  SSLAEADContext(uint16_t version, bool is_dtls, const SSL_CIPHER *cipher);
+  ~SSLAEADContext();
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSLAEADContext(const SSLAEADContext &&) = delete;
+  SSLAEADContext &operator=(const SSLAEADContext &&) = delete;
+
+  // CreateNullCipher creates an |SSLAEADContext| for the null cipher.
+  static UniquePtr<SSLAEADContext> CreateNullCipher(bool is_dtls);
+
+  // Create creates an |SSLAEADContext| using the supplied key material. It
+  // returns nullptr on error. Only one of |Open| or |Seal| may be used with the
+  // resulting object, depending on |direction|. |version| is the normalized
+  // protocol version, so DTLS 1.0 is represented as 0x0301, not 0xffef.
+  static UniquePtr<SSLAEADContext> Create(enum evp_aead_direction_t direction,
+                                          uint16_t version, bool is_dtls,
+                                          const SSL_CIPHER *cipher,
+                                          Span<const uint8_t> enc_key,
+                                          Span<const uint8_t> mac_key,
+                                          Span<const uint8_t> fixed_iv);
+
+  // CreatePlaceholderForQUIC creates a placeholder |SSLAEADContext| for the
+  // given cipher and version. The resulting object can be queried for various
+  // properties but cannot encrypt or decrypt data.
+  static UniquePtr<SSLAEADContext> CreatePlaceholderForQUIC(
+      uint16_t version, const SSL_CIPHER *cipher);
+
+  // SetVersionIfNullCipher sets the version the SSLAEADContext for the null
+  // cipher, to make version-specific determinations in the record layer prior
+  // to a cipher being selected.
+  void SetVersionIfNullCipher(uint16_t version);
+
+  // ProtocolVersion returns the protocol version associated with this
+  // SSLAEADContext. It can only be called once |version_| has been set to a
+  // valid value.
+  uint16_t ProtocolVersion() const;
+
+  // RecordVersion returns the record version that should be used with this
+  // SSLAEADContext for record construction and crypto.
+  uint16_t RecordVersion() const;
+
+  const SSL_CIPHER *cipher() const { return cipher_; }
+
+  // is_null_cipher returns true if this is the null cipher.
+  bool is_null_cipher() const { return !cipher_; }
+
+  // ExplicitNonceLen returns the length of the explicit nonce.
+  size_t ExplicitNonceLen() const;
+
+  // MaxOverhead returns the maximum overhead of calling |Seal|.
+  size_t MaxOverhead() const;
+
+  // SuffixLen calculates the suffix length written by |SealScatter| and writes
+  // it to |*out_suffix_len|. It returns true on success and false on error.
+  // |in_len| and |extra_in_len| should equal the argument of the same names
+  // passed to |SealScatter|.
+  bool SuffixLen(size_t *out_suffix_len, size_t in_len,
+                 size_t extra_in_len) const;
+
+  // CiphertextLen calculates the total ciphertext length written by
+  // |SealScatter| and writes it to |*out_len|. It returns true on success and
+  // false on error. |in_len| and |extra_in_len| should equal the argument of
+  // the same names passed to |SealScatter|.
+  bool CiphertextLen(size_t *out_len, size_t in_len, size_t extra_in_len) const;
+
+  // Open authenticates and decrypts |in| in-place. On success, it sets |*out|
+  // to the plaintext in |in| and returns true.  Otherwise, it returns
+  // false. The output will always be |ExplicitNonceLen| bytes ahead of |in|.
+  bool Open(Span<uint8_t> *out, uint8_t type, uint16_t record_version,
+            const uint8_t seqnum[8], Span<const uint8_t> header,
+            Span<uint8_t> in);
+
+  // Seal encrypts and authenticates |in_len| bytes from |in| and writes the
+  // result to |out|. It returns true on success and false on error.
+  //
+  // If |in| and |out| alias then |out| + |ExplicitNonceLen| must be == |in|.
+  bool Seal(uint8_t *out, size_t *out_len, size_t max_out, uint8_t type,
+            uint16_t record_version, const uint8_t seqnum[8],
+            Span<const uint8_t> header, const uint8_t *in, size_t in_len);
+
+  // SealScatter encrypts and authenticates |in_len| bytes from |in| and splits
+  // the result between |out_prefix|, |out| and |out_suffix|. It returns one on
+  // success and zero on error.
+  //
+  // On successful return, exactly |ExplicitNonceLen| bytes are written to
+  // |out_prefix|, |in_len| bytes to |out|, and |SuffixLen| bytes to
+  // |out_suffix|.
+  //
+  // |extra_in| may point to an additional plaintext buffer. If present,
+  // |extra_in_len| additional bytes are encrypted and authenticated, and the
+  // ciphertext is written to the beginning of |out_suffix|. |SuffixLen| should
+  // be used to size |out_suffix| accordingly.
+  //
+  // If |in| and |out| alias then |out| must be == |in|. Other arguments may not
+  // alias anything.
+  bool SealScatter(uint8_t *out_prefix, uint8_t *out, uint8_t *out_suffix,
+                   uint8_t type, uint16_t record_version,
+                   const uint8_t seqnum[8], Span<const uint8_t> header,
+                   const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+                   size_t extra_in_len);
+
+  bool GetIV(const uint8_t **out_iv, size_t *out_iv_len) const;
+
+ private:
+  // GetAdditionalData returns the additional data, writing into |storage| if
+  // necessary.
+  Span<const uint8_t> GetAdditionalData(uint8_t storage[13], uint8_t type,
+                                        uint16_t record_version,
+                                        const uint8_t seqnum[8],
+                                        size_t plaintext_len,
+                                        Span<const uint8_t> header);
+
+  const SSL_CIPHER *cipher_;
+  ScopedEVP_AEAD_CTX ctx_;
+  // fixed_nonce_ contains any bytes of the nonce that are fixed for all
+  // records.
+  uint8_t fixed_nonce_[12];
+  uint8_t fixed_nonce_len_ = 0, variable_nonce_len_ = 0;
+  // version_ is the wire version that should be used with this AEAD.
+  uint16_t version_;
+  // is_dtls_ is whether DTLS is being used with this AEAD.
+  bool is_dtls_;
+  // variable_nonce_included_in_record_ is true if the variable nonce
+  // for a record is included as a prefix before the ciphertext.
+  bool variable_nonce_included_in_record_ : 1;
+  // random_variable_nonce_ is true if the variable nonce is
+  // randomly generated, rather than derived from the sequence
+  // number.
+  bool random_variable_nonce_ : 1;
+  // xor_fixed_nonce_ is true if the fixed nonce should be XOR'd into the
+  // variable nonce rather than prepended.
+  bool xor_fixed_nonce_ : 1;
+  // omit_length_in_ad_ is true if the length should be omitted in the
+  // AEAD's ad parameter.
+  bool omit_length_in_ad_ : 1;
+  // ad_is_header_ is true if the AEAD's ad parameter is the record header.
+  bool ad_is_header_ : 1;
+};
+
+
+// DTLS replay bitmap.
+
+// DTLS1_BITMAP maintains a sliding window of 64 sequence numbers to detect
+// replayed packets. It should be initialized by zeroing every field.
+struct DTLS1_BITMAP {
+  // map is a bit mask of the last 64 sequence numbers. Bit
+  // |1<<i| corresponds to |max_seq_num - i|.
+  uint64_t map = 0;
+  // max_seq_num is the largest sequence number seen so far as a 64-bit
+  // integer.
+  uint64_t max_seq_num = 0;
+};
+
+
+// Record layer.
+
+// ssl_record_sequence_update increments the sequence number in |seq|. It
+// returns true on success and false on wraparound.
+bool ssl_record_sequence_update(uint8_t *seq, size_t seq_len);
+
+// ssl_record_prefix_len returns the length of the prefix before the ciphertext
+// of a record for |ssl|.
+//
+// TODO(davidben): Expose this as part of public API once the high-level
+// buffer-free APIs are available.
+size_t ssl_record_prefix_len(const SSL *ssl);
+
+enum ssl_open_record_t {
+  ssl_open_record_success,
+  ssl_open_record_discard,
+  ssl_open_record_partial,
+  ssl_open_record_close_notify,
+  ssl_open_record_error,
+};
+
+// tls_open_record decrypts a record from |in| in-place.
+//
+// If the input did not contain a complete record, it returns
+// |ssl_open_record_partial|. It sets |*out_consumed| to the total number of
+// bytes necessary. It is guaranteed that a successful call to |tls_open_record|
+// will consume at least that many bytes.
+//
+// Otherwise, it sets |*out_consumed| to the number of bytes of input
+// consumed. Note that input may be consumed on all return codes if a record was
+// decrypted.
+//
+// On success, it returns |ssl_open_record_success|. It sets |*out_type| to the
+// record type and |*out| to the record body in |in|. Note that |*out| may be
+// empty.
+//
+// If a record was successfully processed but should be discarded, it returns
+// |ssl_open_record_discard|.
+//
+// If a record was successfully processed but is a close_notify, it returns
+// |ssl_open_record_close_notify|.
+//
+// On failure or fatal alert, it returns |ssl_open_record_error| and sets
+// |*out_alert| to an alert to emit, or zero if no alert should be emitted.
+enum ssl_open_record_t tls_open_record(SSL *ssl, uint8_t *out_type,
+                                       Span<uint8_t> *out, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in);
+
+// dtls_open_record implements |tls_open_record| for DTLS. It only returns
+// |ssl_open_record_partial| if |in| was empty and sets |*out_consumed| to
+// zero. The caller should read one packet and try again.
+enum ssl_open_record_t dtls_open_record(SSL *ssl, uint8_t *out_type,
+                                        Span<uint8_t> *out,
+                                        size_t *out_consumed,
+                                        uint8_t *out_alert, Span<uint8_t> in);
+
+// ssl_seal_align_prefix_len returns the length of the prefix before the start
+// of the bulk of the ciphertext when sealing a record with |ssl|. Callers may
+// use this to align buffers.
+//
+// Note when TLS 1.0 CBC record-splitting is enabled, this includes the one byte
+// record and is the offset into second record's ciphertext. Thus sealing a
+// small record may result in a smaller output than this value.
+//
+// TODO(davidben): Is this alignment valuable? Record-splitting makes this a
+// mess.
+size_t ssl_seal_align_prefix_len(const SSL *ssl);
+
+// tls_seal_record seals a new record of type |type| and body |in| and writes it
+// to |out|. At most |max_out| bytes will be written. It returns true on success
+// and false on error. If enabled, |tls_seal_record| implements TLS 1.0 CBC
+// 1/n-1 record splitting and may write two records concatenated.
+//
+// For a large record, the bulk of the ciphertext will begin
+// |ssl_seal_align_prefix_len| bytes into out. Aligning |out| appropriately may
+// improve performance. It writes at most |in_len| + |SSL_max_seal_overhead|
+// bytes to |out|.
+//
+// |in| and |out| may not alias.
+bool tls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                     uint8_t type, const uint8_t *in, size_t in_len);
+
+enum dtls1_use_epoch_t {
+  dtls1_use_previous_epoch,
+  dtls1_use_current_epoch,
+};
+
+// dtls_max_seal_overhead returns the maximum overhead, in bytes, of sealing a
+// record.
+size_t dtls_max_seal_overhead(const SSL *ssl, enum dtls1_use_epoch_t use_epoch);
+
+// dtls_seal_prefix_len returns the number of bytes of prefix to reserve in
+// front of the plaintext when sealing a record in-place.
+size_t dtls_seal_prefix_len(const SSL *ssl, enum dtls1_use_epoch_t use_epoch);
+
+// dtls_seal_record implements |tls_seal_record| for DTLS. |use_epoch| selects
+// which epoch's cipher state to use. Unlike |tls_seal_record|, |in| and |out|
+// may alias but, if they do, |in| must be exactly |dtls_seal_prefix_len| bytes
+// ahead of |out|.
+bool dtls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out,
+                      uint8_t type, const uint8_t *in, size_t in_len,
+                      enum dtls1_use_epoch_t use_epoch);
+
+// ssl_process_alert processes |in| as an alert and updates |ssl|'s shutdown
+// state. It returns one of |ssl_open_record_discard|, |ssl_open_record_error|,
+// |ssl_open_record_close_notify|, or |ssl_open_record_fatal_alert| as
+// appropriate.
+enum ssl_open_record_t ssl_process_alert(SSL *ssl, uint8_t *out_alert,
+                                         Span<const uint8_t> in);
+
+
+// Private key operations.
+
+// ssl_has_private_key returns whether |hs| has a private key configured.
+bool ssl_has_private_key(const SSL_HANDSHAKE *hs);
+
+// ssl_private_key_* perform the corresponding operation on
+// |SSL_PRIVATE_KEY_METHOD|. If there is a custom private key configured, they
+// call the corresponding function or |complete| depending on whether there is a
+// pending operation. Otherwise, they implement the operation with
+// |EVP_PKEY|.
+
+enum ssl_private_key_result_t ssl_private_key_sign(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, size_t max_out,
+    uint16_t sigalg, Span<const uint8_t> in);
+
+enum ssl_private_key_result_t ssl_private_key_decrypt(SSL_HANDSHAKE *hs,
+                                                      uint8_t *out,
+                                                      size_t *out_len,
+                                                      size_t max_out,
+                                                      Span<const uint8_t> in);
+
+// ssl_private_key_supports_signature_algorithm returns whether |hs|'s private
+// key supports |sigalg|.
+bool ssl_private_key_supports_signature_algorithm(SSL_HANDSHAKE *hs,
+                                                  uint16_t sigalg);
+
+// ssl_public_key_verify verifies that the |signature| is valid for the public
+// key |pkey| and input |in|, using the signature algorithm |sigalg|.
+bool ssl_public_key_verify(SSL *ssl, Span<const uint8_t> signature,
+                           uint16_t sigalg, EVP_PKEY *pkey,
+                           Span<const uint8_t> in);
+
+
+// Key shares.
+
+// SSLKeyShare abstracts over Diffie-Hellman-like key exchanges.
+class SSLKeyShare {
+ public:
+  virtual ~SSLKeyShare() {}
+  static constexpr bool kAllowUniquePtr = true;
+  HAS_VIRTUAL_DESTRUCTOR
+
+  // Create returns a SSLKeyShare instance for use with group |group_id| or
+  // nullptr on error.
+  static UniquePtr<SSLKeyShare> Create(uint16_t group_id);
+
+  // Create deserializes an SSLKeyShare instance previously serialized by
+  // |Serialize|.
+  static UniquePtr<SSLKeyShare> Create(CBS *in);
+
+  // GroupID returns the group ID.
+  virtual uint16_t GroupID() const PURE_VIRTUAL;
+
+  // Offer generates a keypair and writes the public value to
+  // |out_public_key|. It returns true on success and false on error.
+  virtual bool Offer(CBB *out_public_key) PURE_VIRTUAL;
+
+  // Accept performs a key exchange against the |peer_key| generated by |Offer|.
+  // On success, it returns true, writes the public value to |out_public_key|,
+  // and sets |*out_secret| to the shared secret. On failure, it returns false
+  // and sets |*out_alert| to an alert to send to the peer.
+  //
+  // The default implementation calls |Offer| and then |Finish|, assuming a key
+  // exchange protocol where the peers are symmetric.
+  virtual bool Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+                      uint8_t *out_alert, Span<const uint8_t> peer_key);
+
+  // Finish performs a key exchange against the |peer_key| generated by
+  // |Accept|. On success, it returns true and sets |*out_secret| to the shared
+  // secret. On failure, it returns false and sets |*out_alert| to an alert to
+  // send to the peer.
+  virtual bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+                      Span<const uint8_t> peer_key) PURE_VIRTUAL;
+
+  // Serialize writes the state of the key exchange to |out|, returning true if
+  // successful and false otherwise.
+  virtual bool Serialize(CBB *out) { return false; }
+
+  // Deserialize initializes the state of the key exchange from |in|, returning
+  // true if successful and false otherwise.  It is called by |Create|.
+  virtual bool Deserialize(CBS *in) { return false; }
+};
+
+struct NamedGroup {
+  int nid;
+  uint16_t group_id;
+  const char name[8], alias[11];
+};
+
+// NamedGroups returns all supported groups.
+Span<const NamedGroup> NamedGroups();
+
+// ssl_nid_to_group_id looks up the group corresponding to |nid|. On success, it
+// sets |*out_group_id| to the group ID and returns true. Otherwise, it returns
+// false.
+bool ssl_nid_to_group_id(uint16_t *out_group_id, int nid);
+
+// ssl_name_to_group_id looks up the group corresponding to the |name| string of
+// length |len|. On success, it sets |*out_group_id| to the group ID and returns
+// true. Otherwise, it returns false.
+bool ssl_name_to_group_id(uint16_t *out_group_id, const char *name, size_t len);
+
+
+// Handshake messages.
+
+struct SSLMessage {
+  bool is_v2_hello;
+  uint8_t type;
+  CBS body;
+  // raw is the entire serialized handshake message, including the TLS or DTLS
+  // message header.
+  CBS raw;
+};
+
+// SSL_MAX_HANDSHAKE_FLIGHT is the number of messages, including
+// ChangeCipherSpec, in the longest handshake flight. Currently this is the
+// client's second leg in a full handshake when client certificates, NPN, and
+// Channel ID, are all enabled.
+#define SSL_MAX_HANDSHAKE_FLIGHT 7
+
+extern const uint8_t kHelloRetryRequest[SSL3_RANDOM_SIZE];
+extern const uint8_t kTLS12DowngradeRandom[8];
+extern const uint8_t kTLS13DowngradeRandom[8];
+extern const uint8_t kJDK11DowngradeRandom[8];
+
+// ssl_max_handshake_message_len returns the maximum number of bytes permitted
+// in a handshake message for |ssl|.
+size_t ssl_max_handshake_message_len(const SSL *ssl);
+
+// tls_can_accept_handshake_data returns whether |ssl| is able to accept more
+// data into handshake buffer.
+bool tls_can_accept_handshake_data(const SSL *ssl, uint8_t *out_alert);
+
+// tls_has_unprocessed_handshake_data returns whether there is buffered
+// handshake data that has not been consumed by |get_message|.
+bool tls_has_unprocessed_handshake_data(const SSL *ssl);
+
+// tls_append_handshake_data appends |data| to the handshake buffer. It returns
+// true on success and false on allocation failure.
+bool tls_append_handshake_data(SSL *ssl, Span<const uint8_t> data);
+
+// dtls_has_unprocessed_handshake_data behaves like
+// |tls_has_unprocessed_handshake_data| for DTLS.
+bool dtls_has_unprocessed_handshake_data(const SSL *ssl);
+
+// tls_flush_pending_hs_data flushes any handshake plaintext data.
+bool tls_flush_pending_hs_data(SSL *ssl);
+
+struct DTLS_OUTGOING_MESSAGE {
+  DTLS_OUTGOING_MESSAGE() {}
+  DTLS_OUTGOING_MESSAGE(const DTLS_OUTGOING_MESSAGE &) = delete;
+  DTLS_OUTGOING_MESSAGE &operator=(const DTLS_OUTGOING_MESSAGE &) = delete;
+  ~DTLS_OUTGOING_MESSAGE() { Clear(); }
+
+  void Clear();
+
+  uint8_t *data = nullptr;
+  uint32_t len = 0;
+  uint16_t epoch = 0;
+  bool is_ccs = false;
+};
+
+// dtls_clear_outgoing_messages releases all buffered outgoing messages.
+void dtls_clear_outgoing_messages(SSL *ssl);
+
+
+// Callbacks.
+
+// ssl_do_info_callback calls |ssl|'s info callback, if set.
+void ssl_do_info_callback(const SSL *ssl, int type, int value);
+
+// ssl_do_msg_callback calls |ssl|'s message callback, if set.
+void ssl_do_msg_callback(const SSL *ssl, int is_write, int content_type,
+                         Span<const uint8_t> in);
+
+
+// Transport buffers.
+
+class SSLBuffer {
+ public:
+  SSLBuffer() {}
+  ~SSLBuffer() { Clear(); }
+
+  SSLBuffer(const SSLBuffer &) = delete;
+  SSLBuffer &operator=(const SSLBuffer &) = delete;
+
+  uint8_t *data() { return buf_ + offset_; }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+  size_t cap() const { return cap_; }
+
+  Span<uint8_t> span() { return MakeSpan(data(), size()); }
+
+  Span<uint8_t> remaining() {
+    return MakeSpan(data() + size(), cap() - size());
+  }
+
+  // Clear releases the buffer.
+  void Clear();
+
+  // EnsureCap ensures the buffer has capacity at least |new_cap|, aligned such
+  // that data written after |header_len| is aligned to a
+  // |SSL3_ALIGN_PAYLOAD|-byte boundary. It returns true on success and false
+  // on error.
+  bool EnsureCap(size_t header_len, size_t new_cap);
+
+  // DidWrite extends the buffer by |len|. The caller must have filled in to
+  // this point.
+  void DidWrite(size_t len);
+
+  // Consume consumes |len| bytes from the front of the buffer.  The memory
+  // consumed will remain valid until the next call to |DiscardConsumed| or
+  // |Clear|.
+  void Consume(size_t len);
+
+  // DiscardConsumed discards the consumed bytes from the buffer. If the buffer
+  // is now empty, it releases memory used by it.
+  void DiscardConsumed();
+
+ private:
+  // buf_ is the memory allocated for this buffer.
+  uint8_t *buf_ = nullptr;
+  // offset_ is the offset into |buf_| which the buffer contents start at.
+  uint16_t offset_ = 0;
+  // size_ is the size of the buffer contents from |buf_| + |offset_|.
+  uint16_t size_ = 0;
+  // cap_ is how much memory beyond |buf_| + |offset_| is available.
+  uint16_t cap_ = 0;
+  // inline_buf_ is a static buffer for short reads.
+  uint8_t inline_buf_[SSL3_RT_HEADER_LENGTH];
+  // buf_allocated_ is true if |buf_| points to allocated data and must be freed
+  // or false if it points into |inline_buf_|.
+  bool buf_allocated_ = false;
+};
+
+// ssl_read_buffer_extend_to extends the read buffer to the desired length. For
+// TLS, it reads to the end of the buffer until the buffer is |len| bytes
+// long. For DTLS, it reads a new packet and ignores |len|. It returns one on
+// success, zero on EOF, and a negative number on error.
+//
+// It is an error to call |ssl_read_buffer_extend_to| in DTLS when the buffer is
+// non-empty.
+int ssl_read_buffer_extend_to(SSL *ssl, size_t len);
+
+// ssl_handle_open_record handles the result of passing |ssl->s3->read_buffer|
+// to a record-processing function. If |ret| is a success or if the caller
+// should retry, it returns one and sets |*out_retry|. Otherwise, it returns <=
+// 0.
+int ssl_handle_open_record(SSL *ssl, bool *out_retry, ssl_open_record_t ret,
+                           size_t consumed, uint8_t alert);
+
+// ssl_write_buffer_flush flushes the write buffer to the transport. It returns
+// one on success and <= 0 on error. For DTLS, whether or not the write
+// succeeds, the write buffer will be cleared.
+int ssl_write_buffer_flush(SSL *ssl);
+
+
+// Certificate functions.
+
+// ssl_has_certificate returns whether a certificate and private key are
+// configured.
+bool ssl_has_certificate(const SSL_HANDSHAKE *hs);
+
+// ssl_parse_cert_chain parses a certificate list from |cbs| in the format used
+// by a TLS Certificate message. On success, it advances |cbs| and returns
+// true. Otherwise, it returns false and sets |*out_alert| to an alert to send
+// to the peer.
+//
+// If the list is non-empty then |*out_chain| and |*out_pubkey| will be set to
+// the certificate chain and the leaf certificate's public key
+// respectively. Otherwise, both will be set to nullptr.
+//
+// If the list is non-empty and |out_leaf_sha256| is non-NULL, it writes the
+// SHA-256 hash of the leaf to |out_leaf_sha256|.
+bool ssl_parse_cert_chain(uint8_t *out_alert,
+                          UniquePtr<STACK_OF(CRYPTO_BUFFER)> *out_chain,
+                          UniquePtr<EVP_PKEY> *out_pubkey,
+                          uint8_t *out_leaf_sha256, CBS *cbs,
+                          CRYPTO_BUFFER_POOL *pool);
+
+// ssl_add_cert_chain adds |hs->ssl|'s certificate chain to |cbb| in the format
+// used by a TLS Certificate message. If there is no certificate chain, it emits
+// an empty certificate list. It returns true on success and false on error.
+bool ssl_add_cert_chain(SSL_HANDSHAKE *hs, CBB *cbb);
+
+enum ssl_key_usage_t {
+  key_usage_digital_signature = 0,
+  key_usage_encipherment = 2,
+};
+
+// ssl_cert_check_key_usage parses the DER-encoded, X.509 certificate in |in|
+// and returns true if doesn't specify a key usage or, if it does, if it
+// includes |bit|. Otherwise it pushes to the error queue and returns false.
+bool ssl_cert_check_key_usage(const CBS *in, enum ssl_key_usage_t bit);
+
+// ssl_cert_parse_pubkey extracts the public key from the DER-encoded, X.509
+// certificate in |in|. It returns an allocated |EVP_PKEY| or else returns
+// nullptr and pushes to the error queue.
+UniquePtr<EVP_PKEY> ssl_cert_parse_pubkey(const CBS *in);
+
+// ssl_parse_client_CA_list parses a CA list from |cbs| in the format used by a
+// TLS CertificateRequest message. On success, it returns a newly-allocated
+// |CRYPTO_BUFFER| list and advances |cbs|. Otherwise, it returns nullptr and
+// sets |*out_alert| to an alert to send to the peer.
+UniquePtr<STACK_OF(CRYPTO_BUFFER)> ssl_parse_client_CA_list(SSL *ssl,
+                                                            uint8_t *out_alert,
+                                                            CBS *cbs);
+
+// ssl_has_client_CAs returns there are configured CAs.
+bool ssl_has_client_CAs(const SSL_CONFIG *cfg);
+
+// ssl_add_client_CA_list adds the configured CA list to |cbb| in the format
+// used by a TLS CertificateRequest message. It returns true on success and
+// false on error.
+bool ssl_add_client_CA_list(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// ssl_check_leaf_certificate returns one if |pkey| and |leaf| are suitable as
+// a server's leaf certificate for |hs|. Otherwise, it returns zero and pushes
+// an error on the error queue.
+bool ssl_check_leaf_certificate(SSL_HANDSHAKE *hs, EVP_PKEY *pkey,
+                               const CRYPTO_BUFFER *leaf);
+
+// ssl_on_certificate_selected is called once the certificate has been selected.
+// It finalizes the certificate and initializes |hs->local_pubkey|. It returns
+// true on success and false on error.
+bool ssl_on_certificate_selected(SSL_HANDSHAKE *hs);
+
+
+// TLS 1.3 key derivation.
+
+// tls13_init_key_schedule initializes the handshake hash and key derivation
+// state, and incorporates the PSK. The cipher suite and PRF hash must have been
+// selected at this point. It returns true on success and false on error.
+bool tls13_init_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk);
+
+// tls13_init_early_key_schedule initializes the handshake hash and key
+// derivation state from the resumption secret and incorporates the PSK to
+// derive the early secrets. It returns one on success and zero on error.
+bool tls13_init_early_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk);
+
+// tls13_advance_key_schedule incorporates |in| into the key schedule with
+// HKDF-Extract. It returns true on success and false on error.
+bool tls13_advance_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> in);
+
+// tls13_set_traffic_key sets the read or write traffic keys to
+// |traffic_secret|. It returns true on success and false on error.
+bool tls13_set_traffic_key(SSL *ssl, enum ssl_encryption_level_t level,
+                           enum evp_aead_direction_t direction,
+                           Span<const uint8_t> traffic_secret);
+
+// tls13_derive_early_secret derives the early traffic secret. It returns true
+// on success and false on error. Unlike with other traffic secrets, this
+// function does not pass the keys to QUIC. Call
+// |tls13_set_early_secret_for_quic| to do so. This is done to due to an
+// ordering complication around resolving HelloRetryRequest on the server.
+bool tls13_derive_early_secret(SSL_HANDSHAKE *hs);
+
+// tls13_set_early_secret_for_quic passes the early traffic secrets, as
+// derived by |tls13_derive_early_secret|, to QUIC. It returns true on success
+// and false on error.
+bool tls13_set_early_secret_for_quic(SSL_HANDSHAKE *hs);
+
+// tls13_derive_handshake_secrets derives the handshake traffic secret. It
+// returns true on success and false on error.
+bool tls13_derive_handshake_secrets(SSL_HANDSHAKE *hs);
+
+// tls13_rotate_traffic_key derives the next read or write traffic secret. It
+// returns true on success and false on error.
+bool tls13_rotate_traffic_key(SSL *ssl, enum evp_aead_direction_t direction);
+
+// tls13_derive_application_secrets derives the initial application data traffic
+// and exporter secrets based on the handshake transcripts and |master_secret|.
+// It returns true on success and false on error.
+bool tls13_derive_application_secrets(SSL_HANDSHAKE *hs);
+
+// tls13_derive_resumption_secret derives the |resumption_secret|.
+bool tls13_derive_resumption_secret(SSL_HANDSHAKE *hs);
+
+// tls13_export_keying_material provides an exporter interface to use the
+// |exporter_secret|.
+bool tls13_export_keying_material(SSL *ssl, Span<uint8_t> out,
+                                  Span<const uint8_t> secret,
+                                  Span<const char> label,
+                                  Span<const uint8_t> context);
+
+// tls13_finished_mac calculates the MAC of the handshake transcript to verify
+// the integrity of the Finished message, and stores the result in |out| and
+// length in |out_len|. |is_server| is true if this is for the Server Finished
+// and false for the Client Finished.
+bool tls13_finished_mac(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len,
+                        bool is_server);
+
+// tls13_derive_session_psk calculates the PSK for this session based on the
+// resumption master secret and |nonce|. It returns true on success, and false
+// on failure.
+bool tls13_derive_session_psk(SSL_SESSION *session, Span<const uint8_t> nonce);
+
+// tls13_write_psk_binder calculates the PSK binder value and replaces the last
+// bytes of |msg| with the resulting value. It returns true on success, and
+// false on failure.
+bool tls13_write_psk_binder(SSL_HANDSHAKE *hs, Span<uint8_t> msg);
+
+// tls13_verify_psk_binder verifies that the handshake transcript, truncated up
+// to the binders has a valid signature using the value of |session|'s
+// resumption secret. It returns true on success, and false on failure.
+bool tls13_verify_psk_binder(SSL_HANDSHAKE *hs, SSL_SESSION *session,
+                             const SSLMessage &msg, CBS *binders);
+
+
+// Handshake functions.
+
+enum ssl_hs_wait_t {
+  ssl_hs_error,
+  ssl_hs_ok,
+  ssl_hs_read_server_hello,
+  ssl_hs_read_message,
+  ssl_hs_flush,
+  ssl_hs_certificate_selection_pending,
+  ssl_hs_handoff,
+  ssl_hs_handback,
+  ssl_hs_x509_lookup,
+  ssl_hs_channel_id_lookup,
+  ssl_hs_private_key_operation,
+  ssl_hs_pending_session,
+  ssl_hs_pending_ticket,
+  ssl_hs_early_return,
+  ssl_hs_early_data_rejected,
+  ssl_hs_read_end_of_early_data,
+  ssl_hs_read_change_cipher_spec,
+  ssl_hs_certificate_verify,
+};
+
+enum ssl_grease_index_t {
+  ssl_grease_cipher = 0,
+  ssl_grease_group,
+  ssl_grease_extension1,
+  ssl_grease_extension2,
+  ssl_grease_version,
+  ssl_grease_ticket_extension,
+  ssl_grease_last_index = ssl_grease_ticket_extension,
+};
+
+enum tls12_server_hs_state_t {
+  state12_start_accept = 0,
+  state12_read_client_hello,
+  state12_select_certificate,
+  state12_tls13,
+  state12_select_parameters,
+  state12_send_server_hello,
+  state12_send_server_certificate,
+  state12_send_server_key_exchange,
+  state12_send_server_hello_done,
+  state12_read_client_certificate,
+  state12_verify_client_certificate,
+  state12_read_client_key_exchange,
+  state12_read_client_certificate_verify,
+  state12_read_change_cipher_spec,
+  state12_process_change_cipher_spec,
+  state12_read_next_proto,
+  state12_read_channel_id,
+  state12_read_client_finished,
+  state12_send_server_finished,
+  state12_finish_server_handshake,
+  state12_done,
+};
+
+enum tls13_server_hs_state_t {
+  state13_select_parameters = 0,
+  state13_select_session,
+  state13_send_hello_retry_request,
+  state13_read_second_client_hello,
+  state13_send_server_hello,
+  state13_send_server_certificate_verify,
+  state13_send_server_finished,
+  state13_read_second_client_flight,
+  state13_process_end_of_early_data,
+  state13_read_client_certificate,
+  state13_read_client_certificate_verify,
+  state13_read_channel_id,
+  state13_read_client_finished,
+  state13_send_new_session_ticket,
+  state13_done,
+};
+
+// handback_t lists the points in the state machine where a handback can occur.
+// These are the different points at which key material is no longer needed.
+enum handback_t {
+  handback_after_session_resumption,
+  handback_after_ecdhe,
+  handback_after_handshake,
+  handback_tls13,
+};
+
+
+// Delegated credentials.
+
+// This structure stores a delegated credential (DC) as defined by
+// draft-ietf-tls-subcerts-03.
+struct DC {
+  static constexpr bool kAllowUniquePtr = true;
+  ~DC();
+
+  // Dup returns a copy of this DC and takes references to |raw| and |pkey|.
+  UniquePtr<DC> Dup();
+
+  // Parse parses the delegated credential stored in |in|. If successful it
+  // returns the parsed structure, otherwise it returns |nullptr| and sets
+  // |*out_alert|.
+  static UniquePtr<DC> Parse(CRYPTO_BUFFER *in, uint8_t *out_alert);
+
+  // raw is the delegated credential encoded as specified in draft-ietf-tls-
+  // subcerts-03.
+  UniquePtr<CRYPTO_BUFFER> raw;
+
+  // expected_cert_verify_algorithm is the signature scheme of the DC public
+  // key.
+  uint16_t expected_cert_verify_algorithm = 0;
+
+  // pkey is the public key parsed from |public_key|.
+  UniquePtr<EVP_PKEY> pkey;
+
+ private:
+  friend DC* New<DC>();
+  DC();
+};
+
+// ssl_signing_with_dc returns true if the peer has indicated support for
+// delegated credentials and this host has sent a delegated credential in
+// response. If this is true then we've committed to using the DC in the
+// handshake.
+bool ssl_signing_with_dc(const SSL_HANDSHAKE *hs);
+
+
+struct SSL_HANDSHAKE {
+  explicit SSL_HANDSHAKE(SSL *ssl);
+  ~SSL_HANDSHAKE();
+  static constexpr bool kAllowUniquePtr = true;
+
+  // ssl is a non-owning pointer to the parent |SSL| object.
+  SSL *ssl;
+
+  // config is a non-owning pointer to the handshake configuration.
+  SSL_CONFIG *config;
+
+  // wait contains the operation the handshake is currently blocking on or
+  // |ssl_hs_ok| if none.
+  enum ssl_hs_wait_t wait = ssl_hs_ok;
+
+  // state is the internal state for the TLS 1.2 and below handshake. Its
+  // values depend on |do_handshake| but the starting state is always zero.
+  int state = 0;
+
+  // tls13_state is the internal state for the TLS 1.3 handshake. Its values
+  // depend on |do_handshake| but the starting state is always zero.
+  int tls13_state = 0;
+
+  // min_version is the minimum accepted protocol version, taking account both
+  // |SSL_OP_NO_*| and |SSL_CTX_set_min_proto_version| APIs.
+  uint16_t min_version = 0;
+
+  // max_version is the maximum accepted protocol version, taking account both
+  // |SSL_OP_NO_*| and |SSL_CTX_set_max_proto_version| APIs.
+  uint16_t max_version = 0;
+
+ private:
+  size_t hash_len_ = 0;
+  uint8_t secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t early_traffic_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t client_handshake_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t server_handshake_secret_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t client_traffic_secret_0_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t server_traffic_secret_0_[SSL_MAX_MD_SIZE] = {0};
+  uint8_t expected_client_finished_[SSL_MAX_MD_SIZE] = {0};
+
+ public:
+  void ResizeSecrets(size_t hash_len);
+
+  Span<uint8_t> secret() { return MakeSpan(secret_, hash_len_); }
+  Span<uint8_t> early_traffic_secret() {
+    return MakeSpan(early_traffic_secret_, hash_len_);
+  }
+  Span<uint8_t> client_handshake_secret() {
+    return MakeSpan(client_handshake_secret_, hash_len_);
+  }
+  Span<uint8_t> server_handshake_secret() {
+    return MakeSpan(server_handshake_secret_, hash_len_);
+  }
+  Span<uint8_t> client_traffic_secret_0() {
+    return MakeSpan(client_traffic_secret_0_, hash_len_);
+  }
+  Span<uint8_t> server_traffic_secret_0() {
+    return MakeSpan(server_traffic_secret_0_, hash_len_);
+  }
+  Span<uint8_t> expected_client_finished() {
+    return MakeSpan(expected_client_finished_, hash_len_);
+  }
+
+  union {
+    // sent is a bitset where the bits correspond to elements of kExtensions
+    // in t1_lib.c. Each bit is set if that extension was sent in a
+    // ClientHello. It's not used by servers.
+    uint32_t sent = 0;
+    // received is a bitset, like |sent|, but is used by servers to record
+    // which extensions were received from a client.
+    uint32_t received;
+  } extensions;
+
+  // retry_group is the group ID selected by the server in HelloRetryRequest in
+  // TLS 1.3.
+  uint16_t retry_group = 0;
+
+  // error, if |wait| is |ssl_hs_error|, is the error the handshake failed on.
+  UniquePtr<ERR_SAVE_STATE> error;
+
+  // key_shares are the current key exchange instances. The second is only used
+  // as a client if we believe that we should offer two key shares in a
+  // ClientHello.
+  UniquePtr<SSLKeyShare> key_shares[2];
+
+  // transcript is the current handshake transcript.
+  SSLTranscript transcript;
+
+  // cookie is the value of the cookie received from the server, if any.
+  Array<uint8_t> cookie;
+
+  // key_share_bytes is the value of the previously sent KeyShare extension by
+  // the client in TLS 1.3.
+  Array<uint8_t> key_share_bytes;
+
+  // ecdh_public_key, for servers, is the key share to be sent to the client in
+  // TLS 1.3.
+  Array<uint8_t> ecdh_public_key;
+
+  // peer_sigalgs are the signature algorithms that the peer supports. These are
+  // taken from the contents of the signature algorithms extension for a server
+  // or from the CertificateRequest for a client.
+  Array<uint16_t> peer_sigalgs;
+
+  // peer_supported_group_list contains the supported group IDs advertised by
+  // the peer. This is only set on the server's end. The server does not
+  // advertise this extension to the client.
+  Array<uint16_t> peer_supported_group_list;
+
+  // peer_key is the peer's ECDH key for a TLS 1.2 client.
+  Array<uint8_t> peer_key;
+
+  // negotiated_token_binding_version is used by a server to store the
+  // on-the-wire encoding of the Token Binding protocol version to advertise in
+  // the ServerHello/EncryptedExtensions if the Token Binding extension is to be
+  // sent.
+  uint16_t negotiated_token_binding_version;
+
+  // cert_compression_alg_id, for a server, contains the negotiated certificate
+  // compression algorithm for this client. It is only valid if
+  // |cert_compression_negotiated| is true.
+  uint16_t cert_compression_alg_id;
+
+  // server_params, in a TLS 1.2 server, stores the ServerKeyExchange
+  // parameters. It has client and server randoms prepended for signing
+  // convenience.
+  Array<uint8_t> server_params;
+
+  // peer_psk_identity_hint, on the client, is the psk_identity_hint sent by the
+  // server when using a TLS 1.2 PSK key exchange.
+  UniquePtr<char> peer_psk_identity_hint;
+
+  // ca_names, on the client, contains the list of CAs received in a
+  // CertificateRequest message.
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ca_names;
+
+  // cached_x509_ca_names contains a cache of parsed versions of the elements of
+  // |ca_names|. This pointer is left non-owning so only
+  // |ssl_crypto_x509_method| needs to link against crypto/x509.
+  STACK_OF(X509_NAME) *cached_x509_ca_names = nullptr;
+
+  // certificate_types, on the client, contains the set of certificate types
+  // received in a CertificateRequest message.
+  Array<uint8_t> certificate_types;
+
+  // local_pubkey is the public key we are authenticating as.
+  UniquePtr<EVP_PKEY> local_pubkey;
+
+  // peer_pubkey is the public key parsed from the peer's leaf certificate.
+  UniquePtr<EVP_PKEY> peer_pubkey;
+
+  // new_session is the new mutable session being established by the current
+  // handshake. It should not be cached.
+  UniquePtr<SSL_SESSION> new_session;
+
+  // early_session is the session corresponding to the current 0-RTT state on
+  // the client if |in_early_data| is true.
+  UniquePtr<SSL_SESSION> early_session;
+
+  // new_cipher is the cipher being negotiated in this handshake.
+  const SSL_CIPHER *new_cipher = nullptr;
+
+  // key_block is the record-layer key block for TLS 1.2 and earlier.
+  Array<uint8_t> key_block;
+
+  // scts_requested is true if the SCT extension is in the ClientHello.
+  bool scts_requested : 1;
+
+  // needs_psk_binder is true if the ClientHello has a placeholder PSK binder to
+  // be filled in.
+  bool needs_psk_binder : 1;
+
+  // handshake_finalized is true once the handshake has completed, at which
+  // point accessors should use the established state.
+  bool handshake_finalized : 1;
+
+  // accept_psk_mode stores whether the client's PSK mode is compatible with our
+  // preferences.
+  bool accept_psk_mode : 1;
+
+  // cert_request is true if a client certificate was requested.
+  bool cert_request : 1;
+
+  // certificate_status_expected is true if OCSP stapling was negotiated and the
+  // server is expected to send a CertificateStatus message. (This is used on
+  // both the client and server sides.)
+  bool certificate_status_expected : 1;
+
+  // ocsp_stapling_requested is true if a client requested OCSP stapling.
+  bool ocsp_stapling_requested : 1;
+
+  // delegated_credential_requested is true if the peer indicated support for
+  // the delegated credential extension.
+  bool delegated_credential_requested : 1;
+
+  // should_ack_sni is used by a server and indicates that the SNI extension
+  // should be echoed in the ServerHello.
+  bool should_ack_sni : 1;
+
+  // in_false_start is true if there is a pending client handshake in False
+  // Start. The client may write data at this point.
+  bool in_false_start : 1;
+
+  // in_early_data is true if there is a pending handshake that has progressed
+  // enough to send and receive early data.
+  bool in_early_data : 1;
+
+  // early_data_offered is true if the client sent the early_data extension.
+  bool early_data_offered : 1;
+
+  // can_early_read is true if application data may be read at this point in the
+  // handshake.
+  bool can_early_read : 1;
+
+  // can_early_write is true if application data may be written at this point in
+  // the handshake.
+  bool can_early_write : 1;
+
+  // next_proto_neg_seen is one of NPN was negotiated.
+  bool next_proto_neg_seen : 1;
+
+  // ticket_expected is true if a TLS 1.2 NewSessionTicket message is to be sent
+  // or received.
+  bool ticket_expected : 1;
+
+  // extended_master_secret is true if the extended master secret extension is
+  // negotiated in this handshake.
+  bool extended_master_secret : 1;
+
+  // pending_private_key_op is true if there is a pending private key operation
+  // in progress.
+  bool pending_private_key_op : 1;
+
+  // grease_seeded is true if |grease_seed| has been initialized.
+  bool grease_seeded : 1;
+
+  // handback indicates that a server should pause the handshake after
+  // finishing operations that require private key material, in such a way that
+  // |SSL_get_error| returns |SSL_ERROR_HANDBACK|.  It is set by
+  // |SSL_apply_handoff|.
+  bool handback : 1;
+
+  // cert_compression_negotiated is true iff |cert_compression_alg_id| is valid.
+  bool cert_compression_negotiated : 1;
+
+  // apply_jdk11_workaround is true if the peer is probably a JDK 11 client
+  // which implemented TLS 1.3 incorrectly.
+  bool apply_jdk11_workaround : 1;
+
+  // client_version is the value sent or received in the ClientHello version.
+  uint16_t client_version = 0;
+
+  // early_data_read is the amount of early data that has been read by the
+  // record layer.
+  uint16_t early_data_read = 0;
+
+  // early_data_written is the amount of early data that has been written by the
+  // record layer.
+  uint16_t early_data_written = 0;
+
+  // session_id is the session ID in the ClientHello.
+  uint8_t session_id[SSL_MAX_SSL_SESSION_ID_LENGTH] = {0};
+  uint8_t session_id_len = 0;
+
+  // grease_seed is the entropy for GREASE values. It is valid if
+  // |grease_seeded| is true.
+  uint8_t grease_seed[ssl_grease_last_index + 1] = {0};
+};
+
+UniquePtr<SSL_HANDSHAKE> ssl_handshake_new(SSL *ssl);
+
+// ssl_check_message_type checks if |msg| has type |type|. If so it returns
+// one. Otherwise, it sends an alert and returns zero.
+bool ssl_check_message_type(SSL *ssl, const SSLMessage &msg, int type);
+
+// ssl_run_handshake runs the TLS handshake. It returns one on success and <= 0
+// on error. It sets |out_early_return| to one if we've completed the handshake
+// early.
+int ssl_run_handshake(SSL_HANDSHAKE *hs, bool *out_early_return);
+
+// The following are implementations of |do_handshake| for the client and
+// server.
+enum ssl_hs_wait_t ssl_client_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t ssl_server_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t tls13_client_handshake(SSL_HANDSHAKE *hs);
+enum ssl_hs_wait_t tls13_server_handshake(SSL_HANDSHAKE *hs);
+
+// The following functions return human-readable representations of the TLS
+// handshake states for debugging.
+const char *ssl_client_handshake_state(SSL_HANDSHAKE *hs);
+const char *ssl_server_handshake_state(SSL_HANDSHAKE *hs);
+const char *tls13_client_handshake_state(SSL_HANDSHAKE *hs);
+const char *tls13_server_handshake_state(SSL_HANDSHAKE *hs);
+
+// tls13_add_key_update queues a KeyUpdate message on |ssl|. The
+// |update_requested| argument must be one of |SSL_KEY_UPDATE_REQUESTED| or
+// |SSL_KEY_UPDATE_NOT_REQUESTED|.
+bool tls13_add_key_update(SSL *ssl, int update_requested);
+
+// tls13_post_handshake processes a post-handshake message. It returns true on
+// success and false on failure.
+bool tls13_post_handshake(SSL *ssl, const SSLMessage &msg);
+
+bool tls13_process_certificate(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                               bool allow_anonymous);
+bool tls13_process_certificate_verify(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+// tls13_process_finished processes |msg| as a Finished message from the
+// peer. If |use_saved_value| is true, the verify_data is compared against
+// |hs->expected_client_finished| rather than computed fresh.
+bool tls13_process_finished(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                            bool use_saved_value);
+
+bool tls13_add_certificate(SSL_HANDSHAKE *hs);
+
+// tls13_add_certificate_verify adds a TLS 1.3 CertificateVerify message to the
+// handshake. If it returns |ssl_private_key_retry|, it should be called again
+// to retry when the signing operation is completed.
+enum ssl_private_key_result_t tls13_add_certificate_verify(SSL_HANDSHAKE *hs);
+
+bool tls13_add_finished(SSL_HANDSHAKE *hs);
+bool tls13_process_new_session_ticket(SSL *ssl, const SSLMessage &msg);
+
+bool ssl_ext_key_share_parse_serverhello(SSL_HANDSHAKE *hs,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents);
+bool ssl_ext_key_share_parse_clienthello(SSL_HANDSHAKE *hs, bool *out_found,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents);
+bool ssl_ext_key_share_add_serverhello(SSL_HANDSHAKE *hs, CBB *out);
+
+bool ssl_ext_pre_shared_key_parse_serverhello(SSL_HANDSHAKE *hs,
+                                              uint8_t *out_alert,
+                                              CBS *contents);
+bool ssl_ext_pre_shared_key_parse_clienthello(
+    SSL_HANDSHAKE *hs, CBS *out_ticket, CBS *out_binders,
+    uint32_t *out_obfuscated_ticket_age, uint8_t *out_alert,
+    const SSL_CLIENT_HELLO *client_hello, CBS *contents);
+bool ssl_ext_pre_shared_key_add_serverhello(SSL_HANDSHAKE *hs, CBB *out);
+
+// ssl_is_sct_list_valid does a shallow parse of the SCT list in |contents| and
+// returns whether it's valid.
+bool ssl_is_sct_list_valid(const CBS *contents);
+
+bool ssl_write_client_hello(SSL_HANDSHAKE *hs);
+
+enum ssl_cert_verify_context_t {
+  ssl_cert_verify_server,
+  ssl_cert_verify_client,
+  ssl_cert_verify_channel_id,
+};
+
+// tls13_get_cert_verify_signature_input generates the message to be signed for
+// TLS 1.3's CertificateVerify message. |cert_verify_context| determines the
+// type of signature. It sets |*out| to a newly allocated buffer containing the
+// result. This function returns true on success and false on failure.
+bool tls13_get_cert_verify_signature_input(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out,
+    enum ssl_cert_verify_context_t cert_verify_context);
+
+// ssl_is_alpn_protocol_allowed returns whether |protocol| is a valid server
+// selection for |hs->ssl|'s client preferences.
+bool ssl_is_alpn_protocol_allowed(const SSL_HANDSHAKE *hs,
+                                  Span<const uint8_t> protocol);
+
+// ssl_negotiate_alpn negotiates the ALPN extension, if applicable. It returns
+// true on successful negotiation or if nothing was negotiated. It returns false
+// and sets |*out_alert| to an alert on error.
+bool ssl_negotiate_alpn(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello);
+
+struct SSL_EXTENSION_TYPE {
+  uint16_t type;
+  bool *out_present;
+  CBS *out_data;
+};
+
+// ssl_parse_extensions parses a TLS extensions block out of |cbs| and advances
+// it. It writes the parsed extensions to pointers denoted by |ext_types|. On
+// success, it fills in the |out_present| and |out_data| fields and returns one.
+// Otherwise, it sets |*out_alert| to an alert to send and returns zero. Unknown
+// extensions are rejected unless |ignore_unknown| is 1.
+int ssl_parse_extensions(const CBS *cbs, uint8_t *out_alert,
+                         const SSL_EXTENSION_TYPE *ext_types,
+                         size_t num_ext_types, int ignore_unknown);
+
+// ssl_verify_peer_cert verifies the peer certificate for |hs|.
+enum ssl_verify_result_t ssl_verify_peer_cert(SSL_HANDSHAKE *hs);
+// ssl_reverify_peer_cert verifies the peer certificate for |hs| when resuming a
+// session.
+enum ssl_verify_result_t ssl_reverify_peer_cert(SSL_HANDSHAKE *hs,
+                                                bool send_alert);
+
+enum ssl_hs_wait_t ssl_get_finished(SSL_HANDSHAKE *hs);
+bool ssl_send_finished(SSL_HANDSHAKE *hs);
+bool ssl_output_cert_chain(SSL_HANDSHAKE *hs);
+
+// SSLKEYLOGFILE functions.
+
+// ssl_log_secret logs |secret| with label |label|, if logging is enabled for
+// |ssl|. It returns true on success and false on failure.
+bool ssl_log_secret(const SSL *ssl, const char *label,
+                    Span<const uint8_t> secret);
+
+
+// ClientHello functions.
+
+bool ssl_client_hello_init(const SSL *ssl, SSL_CLIENT_HELLO *out,
+                           const SSLMessage &msg);
+
+bool ssl_client_hello_get_extension(const SSL_CLIENT_HELLO *client_hello,
+                                    CBS *out, uint16_t extension_type);
+
+bool ssl_client_cipher_list_contains_cipher(
+    const SSL_CLIENT_HELLO *client_hello, uint16_t id);
+
+
+// GREASE.
+
+// ssl_get_grease_value returns a GREASE value for |hs|. For a given
+// connection, the values for each index will be deterministic. This allows the
+// same ClientHello be sent twice for a HelloRetryRequest or the same group be
+// advertised in both supported_groups and key_shares.
+uint16_t ssl_get_grease_value(SSL_HANDSHAKE *hs, enum ssl_grease_index_t index);
+
+
+// Signature algorithms.
+
+// tls1_parse_peer_sigalgs parses |sigalgs| as the list of peer signature
+// algorithms and saves them on |hs|. It returns true on success and false on
+// error.
+bool tls1_parse_peer_sigalgs(SSL_HANDSHAKE *hs, const CBS *sigalgs);
+
+// tls1_get_legacy_signature_algorithm sets |*out| to the signature algorithm
+// that should be used with |pkey| in TLS 1.1 and earlier. It returns true on
+// success and false if |pkey| may not be used at those versions.
+bool tls1_get_legacy_signature_algorithm(uint16_t *out, const EVP_PKEY *pkey);
+
+// tls1_choose_signature_algorithm sets |*out| to a signature algorithm for use
+// with |hs|'s private key based on the peer's preferences and the algorithms
+// supported. It returns true on success and false on error.
+bool tls1_choose_signature_algorithm(SSL_HANDSHAKE *hs, uint16_t *out);
+
+// tls1_get_peer_verify_algorithms returns the signature schemes for which the
+// peer indicated support.
+//
+// NOTE: The related function |SSL_get0_peer_verify_algorithms| only has
+// well-defined behavior during the callbacks set by |SSL_CTX_set_cert_cb| and
+// |SSL_CTX_set_client_cert_cb|, or when the handshake is paused because of
+// them.
+Span<const uint16_t> tls1_get_peer_verify_algorithms(const SSL_HANDSHAKE *hs);
+
+// tls12_add_verify_sigalgs adds the signature algorithms acceptable for the
+// peer signature to |out|. It returns true on success and false on error.
+bool tls12_add_verify_sigalgs(const SSL *ssl, CBB *out);
+
+// tls12_check_peer_sigalg checks if |sigalg| is acceptable for the peer
+// signature. It returns true on success and false on error, setting
+// |*out_alert| to an alert to send.
+bool tls12_check_peer_sigalg(const SSL *ssl, uint8_t *out_alert,
+                             uint16_t sigalg);
+
+
+// Underdocumented functions.
+//
+// Functions below here haven't been touched up and may be underdocumented.
+
+#define TLSEXT_CHANNEL_ID_SIZE 128
+
+// From RFC4492, used in encoding the curve type in ECParameters
+#define NAMED_CURVE_TYPE 3
+
+struct CERT {
+  static constexpr bool kAllowUniquePtr = true;
+
+  explicit CERT(const SSL_X509_METHOD *x509_method);
+  ~CERT();
+
+  UniquePtr<EVP_PKEY> privatekey;
+
+  // chain contains the certificate chain, with the leaf at the beginning. The
+  // first element of |chain| may be NULL to indicate that the leaf certificate
+  // has not yet been set.
+  //   If |chain| != NULL -> len(chain) >= 1
+  //   If |chain[0]| == NULL -> len(chain) >= 2.
+  //   |chain[1..]| != NULL
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain;
+
+  // x509_chain may contain a parsed copy of |chain[1..]|. This is only used as
+  // a cache in order to implement “get0” functions that return a non-owning
+  // pointer to the certificate chain.
+  STACK_OF(X509) *x509_chain = nullptr;
+
+  // x509_leaf may contain a parsed copy of the first element of |chain|. This
+  // is only used as a cache in order to implement “get0” functions that return
+  // a non-owning pointer to the certificate chain.
+  X509 *x509_leaf = nullptr;
+
+  // x509_stash contains the last |X509| object append to the chain. This is a
+  // workaround for some third-party code that continue to use an |X509| object
+  // even after passing ownership with an “add0” function.
+  X509 *x509_stash = nullptr;
+
+  // key_method, if non-NULL, is a set of callbacks to call for private key
+  // operations.
+  const SSL_PRIVATE_KEY_METHOD *key_method = nullptr;
+
+  // x509_method contains pointers to functions that might deal with |X509|
+  // compatibility, or might be a no-op, depending on the application.
+  const SSL_X509_METHOD *x509_method = nullptr;
+
+  // sigalgs, if non-empty, is the set of signature algorithms supported by
+  // |privatekey| in decreasing order of preference.
+  Array<uint16_t> sigalgs;
+
+  // Certificate setup callback: if set is called whenever a
+  // certificate may be required (client or server). the callback
+  // can then examine any appropriate parameters and setup any
+  // certificates required. This allows advanced applications
+  // to select certificates on the fly: for example based on
+  // supported signature algorithms or curves.
+  int (*cert_cb)(SSL *ssl, void *arg) = nullptr;
+  void *cert_cb_arg = nullptr;
+
+  // Optional X509_STORE for certificate validation. If NULL the parent SSL_CTX
+  // store is used instead.
+  X509_STORE *verify_store = nullptr;
+
+  // Signed certificate timestamp list to be sent to the client, if requested
+  UniquePtr<CRYPTO_BUFFER> signed_cert_timestamp_list;
+
+  // OCSP response to be sent to the client, if requested.
+  UniquePtr<CRYPTO_BUFFER> ocsp_response;
+
+  // sid_ctx partitions the session space within a shared session cache or
+  // ticket key. Only sessions with a matching value will be accepted.
+  uint8_t sid_ctx_length = 0;
+  uint8_t sid_ctx[SSL_MAX_SID_CTX_LENGTH] = {0};
+
+  // Delegated credentials.
+
+  // dc is the delegated credential to send to the peer (if requested).
+  UniquePtr<DC> dc = nullptr;
+
+  // dc_privatekey is used instead of |privatekey| or |key_method| to
+  // authenticate the host if a delegated credential is used in the handshake.
+  UniquePtr<EVP_PKEY> dc_privatekey = nullptr;
+
+  // dc_key_method, if not NULL, is used instead of |dc_privatekey| to
+  // authenticate the host.
+  const SSL_PRIVATE_KEY_METHOD *dc_key_method = nullptr;
+};
+
+// |SSL_PROTOCOL_METHOD| abstracts between TLS and DTLS.
+struct SSL_PROTOCOL_METHOD {
+  bool is_dtls;
+  bool (*ssl_new)(SSL *ssl);
+  void (*ssl_free)(SSL *ssl);
+  // get_message sets |*out| to the current handshake message and returns true
+  // if one has been received. It returns false if more input is needed.
+  bool (*get_message)(const SSL *ssl, SSLMessage *out);
+  // next_message is called to release the current handshake message.
+  void (*next_message)(SSL *ssl);
+  // Use the |ssl_open_handshake| wrapper.
+  ssl_open_record_t (*open_handshake)(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in);
+  // Use the |ssl_open_change_cipher_spec| wrapper.
+  ssl_open_record_t (*open_change_cipher_spec)(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in);
+  // Use the |ssl_open_app_data| wrapper.
+  ssl_open_record_t (*open_app_data)(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in);
+  int (*write_app_data)(SSL *ssl, bool *out_needs_handshake, const uint8_t *buf,
+                        int len);
+  int (*dispatch_alert)(SSL *ssl);
+  // init_message begins a new handshake message of type |type|. |cbb| is the
+  // root CBB to be passed into |finish_message|. |*body| is set to a child CBB
+  // the caller should write to. It returns true on success and false on error.
+  bool (*init_message)(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+  // finish_message finishes a handshake message. It sets |*out_msg| to the
+  // serialized message. It returns true on success and false on error.
+  bool (*finish_message)(SSL *ssl, CBB *cbb, bssl::Array<uint8_t> *out_msg);
+  // add_message adds a handshake message to the pending flight. It returns
+  // true on success and false on error.
+  bool (*add_message)(SSL *ssl, bssl::Array<uint8_t> msg);
+  // add_change_cipher_spec adds a ChangeCipherSpec record to the pending
+  // flight. It returns true on success and false on error.
+  bool (*add_change_cipher_spec)(SSL *ssl);
+  // flush_flight flushes the pending flight to the transport. It returns one on
+  // success and <= 0 on error.
+  int (*flush_flight)(SSL *ssl);
+  // on_handshake_complete is called when the handshake is complete.
+  void (*on_handshake_complete)(SSL *ssl);
+  // set_read_state sets |ssl|'s read cipher state to |aead_ctx|. It returns
+  // true on success and false if changing the read state is forbidden at this
+  // point.
+  bool (*set_read_state)(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx);
+  // set_write_state sets |ssl|'s write cipher state to |aead_ctx|. It returns
+  // true on success and false if changing the write state is forbidden at this
+  // point.
+  bool (*set_write_state)(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx);
+};
+
+// The following wrappers call |open_*| but handle |read_shutdown| correctly.
+
+// ssl_open_handshake processes a record from |in| for reading a handshake
+// message.
+ssl_open_record_t ssl_open_handshake(SSL *ssl, size_t *out_consumed,
+                                     uint8_t *out_alert, Span<uint8_t> in);
+
+// ssl_open_change_cipher_spec processes a record from |in| for reading a
+// ChangeCipherSpec.
+ssl_open_record_t ssl_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                              uint8_t *out_alert,
+                                              Span<uint8_t> in);
+
+// ssl_open_app_data processes a record from |in| for reading application data.
+// On success, it returns |ssl_open_record_success| and sets |*out| to the
+// input. If it encounters a post-handshake message, it returns
+// |ssl_open_record_discard|. The caller should then retry, after processing any
+// messages received with |get_message|.
+ssl_open_record_t ssl_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                    size_t *out_consumed, uint8_t *out_alert,
+                                    Span<uint8_t> in);
+
+struct SSL_X509_METHOD {
+  // check_client_CA_list returns one if |names| is a good list of X.509
+  // distinguished names and zero otherwise. This is used to ensure that we can
+  // reject unparsable values at handshake time when using crypto/x509.
+  bool (*check_client_CA_list)(STACK_OF(CRYPTO_BUFFER) *names);
+
+  // cert_clear frees and NULLs all X509 certificate-related state.
+  void (*cert_clear)(CERT *cert);
+  // cert_free frees all X509-related state.
+  void (*cert_free)(CERT *cert);
+  // cert_flush_cached_chain drops any cached |X509|-based certificate chain
+  // from |cert|.
+  // cert_dup duplicates any needed fields from |cert| to |new_cert|.
+  void (*cert_dup)(CERT *new_cert, const CERT *cert);
+  void (*cert_flush_cached_chain)(CERT *cert);
+  // cert_flush_cached_chain drops any cached |X509|-based leaf certificate
+  // from |cert|.
+  void (*cert_flush_cached_leaf)(CERT *cert);
+
+  // session_cache_objects fills out |sess->x509_peer| and |sess->x509_chain|
+  // from |sess->certs| and erases |sess->x509_chain_without_leaf|. It returns
+  // true on success or false on error.
+  bool (*session_cache_objects)(SSL_SESSION *session);
+  // session_dup duplicates any needed fields from |session| to |new_session|.
+  // It returns true on success or false on error.
+  bool (*session_dup)(SSL_SESSION *new_session, const SSL_SESSION *session);
+  // session_clear frees any X509-related state from |session|.
+  void (*session_clear)(SSL_SESSION *session);
+  // session_verify_cert_chain verifies the certificate chain in |session|,
+  // sets |session->verify_result| and returns true on success or false on
+  // error.
+  bool (*session_verify_cert_chain)(SSL_SESSION *session, SSL_HANDSHAKE *ssl,
+                                    uint8_t *out_alert);
+
+  // hs_flush_cached_ca_names drops any cached |X509_NAME|s from |hs|.
+  void (*hs_flush_cached_ca_names)(SSL_HANDSHAKE *hs);
+  // ssl_new does any necessary initialisation of |hs|. It returns true on
+  // success or false on error.
+  bool (*ssl_new)(SSL_HANDSHAKE *hs);
+  // ssl_free frees anything created by |ssl_new|.
+  void (*ssl_config_free)(SSL_CONFIG *cfg);
+  // ssl_flush_cached_client_CA drops any cached |X509_NAME|s from |ssl|.
+  void (*ssl_flush_cached_client_CA)(SSL_CONFIG *cfg);
+  // ssl_auto_chain_if_needed runs the deprecated auto-chaining logic if
+  // necessary. On success, it updates |ssl|'s certificate configuration as
+  // needed and returns true. Otherwise, it returns false.
+  bool (*ssl_auto_chain_if_needed)(SSL_HANDSHAKE *hs);
+  // ssl_ctx_new does any necessary initialisation of |ctx|. It returns true on
+  // success or false on error.
+  bool (*ssl_ctx_new)(SSL_CTX *ctx);
+  // ssl_ctx_free frees anything created by |ssl_ctx_new|.
+  void (*ssl_ctx_free)(SSL_CTX *ctx);
+  // ssl_ctx_flush_cached_client_CA drops any cached |X509_NAME|s from |ctx|.
+  void (*ssl_ctx_flush_cached_client_CA)(SSL_CTX *ssl);
+};
+
+// ssl_crypto_x509_method provides the |SSL_X509_METHOD| functions using
+// crypto/x509.
+extern const SSL_X509_METHOD ssl_crypto_x509_method;
+
+// ssl_noop_x509_method provides the |SSL_X509_METHOD| functions that avoid
+// crypto/x509.
+extern const SSL_X509_METHOD ssl_noop_x509_method;
+
+struct TicketKey {
+  static constexpr bool kAllowUniquePtr = true;
+
+  uint8_t name[SSL_TICKET_KEY_NAME_LEN] = {0};
+  uint8_t hmac_key[16] = {0};
+  uint8_t aes_key[16] = {0};
+  // next_rotation_tv_sec is the time (in seconds from the epoch) when the
+  // current key should be superseded by a new key, or the time when a previous
+  // key should be dropped. If zero, then the key should not be automatically
+  // rotated.
+  uint64_t next_rotation_tv_sec = 0;
+};
+
+struct CertCompressionAlg {
+  static constexpr bool kAllowUniquePtr = true;
+
+  ssl_cert_compression_func_t compress = nullptr;
+  ssl_cert_decompression_func_t decompress = nullptr;
+  uint16_t alg_id = 0;
+};
+
+BSSL_NAMESPACE_END
+
+DEFINE_LHASH_OF(SSL_SESSION)
+
+BSSL_NAMESPACE_BEGIN
+
+// An ssl_shutdown_t describes the shutdown state of one end of the connection,
+// whether it is alive or has been shutdown via close_notify or fatal alert.
+enum ssl_shutdown_t {
+  ssl_shutdown_none = 0,
+  ssl_shutdown_close_notify = 1,
+  ssl_shutdown_error = 2,
+};
+
+struct SSL3_STATE {
+  static constexpr bool kAllowUniquePtr = true;
+
+  SSL3_STATE();
+  ~SSL3_STATE();
+
+  uint8_t read_sequence[8] = {0};
+  uint8_t write_sequence[8] = {0};
+
+  uint8_t server_random[SSL3_RANDOM_SIZE] = {0};
+  uint8_t client_random[SSL3_RANDOM_SIZE] = {0};
+
+  // read_buffer holds data from the transport to be processed.
+  SSLBuffer read_buffer;
+  // write_buffer holds data to be written to the transport.
+  SSLBuffer write_buffer;
+
+  // pending_app_data is the unconsumed application data. It points into
+  // |read_buffer|.
+  Span<uint8_t> pending_app_data;
+
+  // partial write - check the numbers match
+  unsigned int wnum = 0;  // number of bytes sent so far
+  int wpend_tot = 0;      // number bytes written
+  int wpend_type = 0;
+  int wpend_ret = 0;  // number of bytes submitted
+  const uint8_t *wpend_buf = nullptr;
+
+  // read_shutdown is the shutdown state for the read half of the connection.
+  enum ssl_shutdown_t read_shutdown = ssl_shutdown_none;
+
+  // write_shutdown is the shutdown state for the write half of the connection.
+  enum ssl_shutdown_t write_shutdown = ssl_shutdown_none;
+
+  // read_error, if |read_shutdown| is |ssl_shutdown_error|, is the error for
+  // the receive half of the connection.
+  UniquePtr<ERR_SAVE_STATE> read_error;
+
+  int total_renegotiations = 0;
+
+  // This holds a variable that indicates what we were doing when a 0 or -1 is
+  // returned.  This is needed for non-blocking IO so we know what request
+  // needs re-doing when in SSL_accept or SSL_connect
+  int rwstate = SSL_ERROR_NONE;
+
+  enum ssl_encryption_level_t read_level = ssl_encryption_initial;
+  enum ssl_encryption_level_t write_level = ssl_encryption_initial;
+
+  // early_data_skipped is the amount of early data that has been skipped by the
+  // record layer.
+  uint16_t early_data_skipped = 0;
+
+  // empty_record_count is the number of consecutive empty records received.
+  uint8_t empty_record_count = 0;
+
+  // warning_alert_count is the number of consecutive warning alerts
+  // received.
+  uint8_t warning_alert_count = 0;
+
+  // key_update_count is the number of consecutive KeyUpdates received.
+  uint8_t key_update_count = 0;
+
+  // The negotiated Token Binding key parameter. Only valid if
+  // |token_binding_negotiated| is set.
+  uint8_t negotiated_token_binding_param = 0;
+
+  // skip_early_data instructs the record layer to skip unexpected early data
+  // messages when 0RTT is rejected.
+  bool skip_early_data : 1;
+
+  // have_version is true if the connection's final version is known. Otherwise
+  // the version has not been negotiated yet.
+  bool have_version : 1;
+
+  // v2_hello_done is true if the peer's V2ClientHello, if any, has been handled
+  // and future messages should use the record layer.
+  bool v2_hello_done : 1;
+
+  // is_v2_hello is true if the current handshake message was derived from a
+  // V2ClientHello rather than received from the peer directly.
+  bool is_v2_hello : 1;
+
+  // has_message is true if the current handshake message has been returned
+  // at least once by |get_message| and false otherwise.
+  bool has_message : 1;
+
+  // initial_handshake_complete is true if the initial handshake has
+  // completed.
+  bool initial_handshake_complete : 1;
+
+  // session_reused indicates whether a session was resumed.
+  bool session_reused : 1;
+
+  // delegated_credential_used is whether we presented a delegated credential to
+  // the peer.
+  bool delegated_credential_used : 1;
+
+  bool send_connection_binding : 1;
+
+  // In a client, this means that the server supported Channel ID and that a
+  // Channel ID was sent. In a server it means that we echoed support for
+  // Channel IDs and that |channel_id| will be valid after the handshake.
+  bool channel_id_valid : 1;
+
+  // key_update_pending is true if we have a KeyUpdate acknowledgment
+  // outstanding.
+  bool key_update_pending : 1;
+
+  // wpend_pending is true if we have a pending write outstanding.
+  bool wpend_pending : 1;
+
+  // early_data_accepted is true if early data was accepted by the server.
+  bool early_data_accepted : 1;
+
+  // tls13_downgrade is whether the TLS 1.3 anti-downgrade logic fired.
+  bool tls13_downgrade : 1;
+
+  // token_binding_negotiated is set if Token Binding was negotiated.
+  bool token_binding_negotiated : 1;
+
+  // alert_dispatch is true there is an alert in |send_alert| to be sent.
+  bool alert_dispatch : 1;
+
+  // renegotiate_pending is whether the read half of the channel is blocked on a
+  // HelloRequest.
+  bool renegotiate_pending : 1;
+
+  // used_hello_retry_request is whether the handshake used a TLS 1.3
+  // HelloRetryRequest message.
+  bool used_hello_retry_request : 1;
+
+  // hs_buf is the buffer of handshake data to process.
+  UniquePtr<BUF_MEM> hs_buf;
+
+  // pending_hs_data contains the pending handshake data that has not yet
+  // been encrypted to |pending_flight|. This allows packing the handshake into
+  // fewer records.
+  UniquePtr<BUF_MEM> pending_hs_data;
+
+  // pending_flight is the pending outgoing flight. This is used to flush each
+  // handshake flight in a single write. |write_buffer| must be written out
+  // before this data.
+  UniquePtr<BUF_MEM> pending_flight;
+
+  // pending_flight_offset is the number of bytes of |pending_flight| which have
+  // been successfully written.
+  uint32_t pending_flight_offset = 0;
+
+  // ticket_age_skew is the difference, in seconds, between the client-sent
+  // ticket age and the server-computed value in TLS 1.3 server connections
+  // which resumed a session.
+  int32_t ticket_age_skew = 0;
+
+  // ssl_early_data_reason stores details on why 0-RTT was accepted or rejected.
+  enum ssl_early_data_reason_t early_data_reason = ssl_early_data_unknown;
+
+  // aead_read_ctx is the current read cipher state.
+  UniquePtr<SSLAEADContext> aead_read_ctx;
+
+  // aead_write_ctx is the current write cipher state.
+  UniquePtr<SSLAEADContext> aead_write_ctx;
+
+  // hs is the handshake state for the current handshake or NULL if there isn't
+  // one.
+  UniquePtr<SSL_HANDSHAKE> hs;
+
+  uint8_t write_traffic_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t read_traffic_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t exporter_secret[SSL_MAX_MD_SIZE] = {0};
+  uint8_t write_traffic_secret_len = 0;
+  uint8_t read_traffic_secret_len = 0;
+  uint8_t exporter_secret_len = 0;
+
+  // Connection binding to prevent renegotiation attacks
+  uint8_t previous_client_finished[12] = {0};
+  uint8_t previous_client_finished_len = 0;
+  uint8_t previous_server_finished_len = 0;
+  uint8_t previous_server_finished[12] = {0};
+
+  uint8_t send_alert[2] = {0};
+
+  // established_session is the session established by the connection. This
+  // session is only filled upon the completion of the handshake and is
+  // immutable.
+  UniquePtr<SSL_SESSION> established_session;
+
+  // Next protocol negotiation. For the client, this is the protocol that we
+  // sent in NextProtocol and is set when handling ServerHello extensions.
+  //
+  // For a server, this is the client's selected_protocol from NextProtocol and
+  // is set when handling the NextProtocol message, before the Finished
+  // message.
+  Array<uint8_t> next_proto_negotiated;
+
+  // ALPN information
+  // (we are in the process of transitioning from NPN to ALPN.)
+
+  // In a server these point to the selected ALPN protocol after the
+  // ClientHello has been processed. In a client these contain the protocol
+  // that the server selected once the ServerHello has been processed.
+  Array<uint8_t> alpn_selected;
+
+  // hostname, on the server, is the value of the SNI extension.
+  UniquePtr<char> hostname;
+
+  // For a server:
+  //     If |channel_id_valid| is true, then this contains the
+  //     verified Channel ID from the client: a P256 point, (x,y), where
+  //     each are big-endian values.
+  uint8_t channel_id[64] = {0};
+
+  // Contains the QUIC transport params received by the peer.
+  Array<uint8_t> peer_quic_transport_params;
+
+  // srtp_profile is the selected SRTP protection profile for
+  // DTLS-SRTP.
+  const SRTP_PROTECTION_PROFILE *srtp_profile = nullptr;
+};
+
+// lengths of messages
+#define DTLS1_COOKIE_LENGTH 256
+
+#define DTLS1_RT_HEADER_LENGTH 13
+
+#define DTLS1_HM_HEADER_LENGTH 12
+
+#define DTLS1_CCS_HEADER_LENGTH 1
+
+#define DTLS1_AL_HEADER_LENGTH 2
+
+struct hm_header_st {
+  uint8_t type;
+  uint32_t msg_len;
+  uint16_t seq;
+  uint32_t frag_off;
+  uint32_t frag_len;
+};
+
+// An hm_fragment is an incoming DTLS message, possibly not yet assembled.
+struct hm_fragment {
+  static constexpr bool kAllowUniquePtr = true;
+
+  hm_fragment() {}
+  hm_fragment(const hm_fragment &) = delete;
+  hm_fragment &operator=(const hm_fragment &) = delete;
+
+  ~hm_fragment();
+
+  // type is the type of the message.
+  uint8_t type = 0;
+  // seq is the sequence number of this message.
+  uint16_t seq = 0;
+  // msg_len is the length of the message body.
+  uint32_t msg_len = 0;
+  // data is a pointer to the message, including message header. It has length
+  // |DTLS1_HM_HEADER_LENGTH| + |msg_len|.
+  uint8_t *data = nullptr;
+  // reassembly is a bitmask of |msg_len| bits corresponding to which parts of
+  // the message have been received. It is NULL if the message is complete.
+  uint8_t *reassembly = nullptr;
+};
+
+struct OPENSSL_timeval {
+  uint64_t tv_sec;
+  uint32_t tv_usec;
+};
+
+struct DTLS1_STATE {
+  static constexpr bool kAllowUniquePtr = true;
+
+  DTLS1_STATE();
+  ~DTLS1_STATE();
+
+  // has_change_cipher_spec is true if we have received a ChangeCipherSpec from
+  // the peer in this epoch.
+  bool has_change_cipher_spec : 1;
+
+  // outgoing_messages_complete is true if |outgoing_messages| has been
+  // completed by an attempt to flush it. Future calls to |add_message| and
+  // |add_change_cipher_spec| will start a new flight.
+  bool outgoing_messages_complete : 1;
+
+  // flight_has_reply is true if the current outgoing flight is complete and has
+  // processed at least one message. This is used to detect whether we or the
+  // peer sent the final flight.
+  bool flight_has_reply : 1;
+
+  uint8_t cookie[DTLS1_COOKIE_LENGTH] = {0};
+  size_t cookie_len = 0;
+
+  // The current data and handshake epoch.  This is initially undefined, and
+  // starts at zero once the initial handshake is completed.
+  uint16_t r_epoch = 0;
+  uint16_t w_epoch = 0;
+
+  // records being received in the current epoch
+  DTLS1_BITMAP bitmap;
+
+  uint16_t handshake_write_seq = 0;
+  uint16_t handshake_read_seq = 0;
+
+  // save last sequence number for retransmissions
+  uint8_t last_write_sequence[8] = {0};
+  UniquePtr<SSLAEADContext> last_aead_write_ctx;
+
+  // incoming_messages is a ring buffer of incoming handshake messages that have
+  // yet to be processed. The front of the ring buffer is message number
+  // |handshake_read_seq|, at position |handshake_read_seq| %
+  // |SSL_MAX_HANDSHAKE_FLIGHT|.
+  UniquePtr<hm_fragment> incoming_messages[SSL_MAX_HANDSHAKE_FLIGHT];
+
+  // outgoing_messages is the queue of outgoing messages from the last handshake
+  // flight.
+  DTLS_OUTGOING_MESSAGE outgoing_messages[SSL_MAX_HANDSHAKE_FLIGHT];
+  uint8_t outgoing_messages_len = 0;
+
+  // outgoing_written is the number of outgoing messages that have been
+  // written.
+  uint8_t outgoing_written = 0;
+  // outgoing_offset is the number of bytes of the next outgoing message have
+  // been written.
+  uint32_t outgoing_offset = 0;
+
+  unsigned mtu = 0;  // max DTLS packet size
+
+  // num_timeouts is the number of times the retransmit timer has fired since
+  // the last time it was reset.
+  unsigned num_timeouts = 0;
+
+  // Indicates when the last handshake msg or heartbeat sent will
+  // timeout.
+  struct OPENSSL_timeval next_timeout = {0, 0};
+
+  // timeout_duration_ms is the timeout duration in milliseconds.
+  unsigned timeout_duration_ms = 0;
+};
+
+// SSL_CONFIG contains configuration bits that can be shed after the handshake
+// completes.  Objects of this type are not shared; they are unique to a
+// particular |SSL|.
+//
+// See SSL_shed_handshake_config() for more about the conditions under which
+// configuration can be shed.
+struct SSL_CONFIG {
+  static constexpr bool kAllowUniquePtr = true;
+
+  explicit SSL_CONFIG(SSL *ssl_arg);
+  ~SSL_CONFIG();
+
+  // ssl is a non-owning pointer to the parent |SSL| object.
+  SSL *const ssl = nullptr;
+
+  // conf_max_version is the maximum acceptable version configured by
+  // |SSL_set_max_proto_version|. Note this version is not normalized in DTLS
+  // and is further constrained by |SSL_OP_NO_*|.
+  uint16_t conf_max_version = 0;
+
+  // conf_min_version is the minimum acceptable version configured by
+  // |SSL_set_min_proto_version|. Note this version is not normalized in DTLS
+  // and is further constrained by |SSL_OP_NO_*|.
+  uint16_t conf_min_version = 0;
+
+  X509_VERIFY_PARAM *param = nullptr;
+
+  // crypto
+  UniquePtr<SSLCipherPreferenceList> cipher_list;
+
+  // This is used to hold the local certificate used (i.e. the server
+  // certificate for a server or the client certificate for a client).
+  UniquePtr<CERT> cert;
+
+  int (*verify_callback)(int ok,
+                         X509_STORE_CTX *ctx) =
+      nullptr;  // fail if callback returns 0
+
+  enum ssl_verify_result_t (*custom_verify_callback)(
+      SSL *ssl, uint8_t *out_alert) = nullptr;
+  // Server-only: psk_identity_hint is the identity hint to send in
+  // PSK-based key exchanges.
+  UniquePtr<char> psk_identity_hint;
+
+  unsigned (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
+                                  unsigned max_identity_len, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+  unsigned (*psk_server_callback)(SSL *ssl, const char *identity, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+
+  // for server side, keep the list of CA_dn we can use
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> client_CA;
+
+  // cached_x509_client_CA is a cache of parsed versions of the elements of
+  // |client_CA|.
+  STACK_OF(X509_NAME) *cached_x509_client_CA = nullptr;
+
+  Array<uint16_t> supported_group_list;  // our list
+
+  // The client's Channel ID private key.
+  UniquePtr<EVP_PKEY> channel_id_private;
+
+  // For a client, this contains the list of supported protocols in wire
+  // format.
+  Array<uint8_t> alpn_client_proto_list;
+
+  // Contains a list of supported Token Binding key parameters.
+  Array<uint8_t> token_binding_params;
+
+  // Contains the QUIC transport params that this endpoint will send.
+  Array<uint8_t> quic_transport_params;
+
+  // verify_sigalgs, if not empty, is the set of signature algorithms
+  // accepted from the peer in decreasing order of preference.
+  Array<uint16_t> verify_sigalgs;
+
+  // srtp_profiles is the list of configured SRTP protection profiles for
+  // DTLS-SRTP.
+  UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> srtp_profiles;
+
+  // verify_mode is a bitmask of |SSL_VERIFY_*| values.
+  uint8_t verify_mode = SSL_VERIFY_NONE;
+
+  // Enable signed certificate time stamps. Currently client only.
+  bool signed_cert_timestamps_enabled : 1;
+
+  // ocsp_stapling_enabled is only used by client connections and indicates
+  // whether OCSP stapling will be requested.
+  bool ocsp_stapling_enabled : 1;
+
+  // channel_id_enabled is copied from the |SSL_CTX|. For a server, means that
+  // we'll accept Channel IDs from clients. For a client, means that we'll
+  // advertise support.
+  bool channel_id_enabled : 1;
+
+  // If enforce_rsa_key_usage is true, the handshake will fail if the
+  // keyUsage extension is present and incompatible with the TLS usage.
+  // This field is not read until after certificate verification.
+  bool enforce_rsa_key_usage : 1;
+
+  // retain_only_sha256_of_client_certs is true if we should compute the SHA256
+  // hash of the peer's certificate and then discard it to save memory and
+  // session space. Only effective on the server side.
+  bool retain_only_sha256_of_client_certs : 1;
+
+  // handoff indicates that a server should stop after receiving the
+  // ClientHello and pause the handshake in such a way that |SSL_get_error|
+  // returns |SSL_ERROR_HANDOFF|. This is copied in |SSL_new| from the |SSL_CTX|
+  // element of the same name and may be cleared if the handoff is declined.
+  bool handoff : 1;
+
+  // shed_handshake_config indicates that the handshake config (this object!)
+  // should be freed after the handshake completes.
+  bool shed_handshake_config : 1;
+
+  // ignore_tls13_downgrade is whether the connection should continue when the
+  // server random signals a downgrade.
+  bool ignore_tls13_downgrade : 1;
+
+  // jdk11_workaround is whether to disable TLS 1.3 for JDK 11 clients, as a
+  // workaround for https://bugs.openjdk.java.net/browse/JDK-8211806.
+  bool jdk11_workaround : 1;
+};
+
+// From RFC 8446, used in determining PSK modes.
+#define SSL_PSK_DHE_KE 0x1
+
+// kMaxEarlyDataAccepted is the advertised number of plaintext bytes of early
+// data that will be accepted. This value should be slightly below
+// kMaxEarlyDataSkipped in tls_record.c, which is measured in ciphertext.
+static const size_t kMaxEarlyDataAccepted = 14336;
+
+UniquePtr<CERT> ssl_cert_dup(CERT *cert);
+void ssl_cert_clear_certs(CERT *cert);
+bool ssl_set_cert(CERT *cert, UniquePtr<CRYPTO_BUFFER> buffer);
+bool ssl_is_key_type_supported(int key_type);
+// ssl_compare_public_and_private_key returns true if |pubkey| is the public
+// counterpart to |privkey|. Otherwise it returns false and pushes a helpful
+// message on the error queue.
+bool ssl_compare_public_and_private_key(const EVP_PKEY *pubkey,
+                                       const EVP_PKEY *privkey);
+bool ssl_cert_check_private_key(const CERT *cert, const EVP_PKEY *privkey);
+int ssl_get_new_session(SSL_HANDSHAKE *hs, int is_server);
+int ssl_encrypt_ticket(SSL_HANDSHAKE *hs, CBB *out, const SSL_SESSION *session);
+int ssl_ctx_rotate_ticket_encryption_key(SSL_CTX *ctx);
+
+// ssl_session_new returns a newly-allocated blank |SSL_SESSION| or nullptr on
+// error.
+UniquePtr<SSL_SESSION> ssl_session_new(const SSL_X509_METHOD *x509_method);
+
+// ssl_hash_session_id returns a hash of |session_id|, suitable for a hash table
+// keyed on session IDs.
+uint32_t ssl_hash_session_id(Span<const uint8_t> session_id);
+
+// SSL_SESSION_parse parses an |SSL_SESSION| from |cbs| and advances |cbs| over
+// the parsed data.
+OPENSSL_EXPORT UniquePtr<SSL_SESSION> SSL_SESSION_parse(
+    CBS *cbs, const SSL_X509_METHOD *x509_method, CRYPTO_BUFFER_POOL *pool);
+
+// ssl_session_serialize writes |in| to |cbb| as if it were serialising a
+// session for Session-ID resumption. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int ssl_session_serialize(const SSL_SESSION *in, CBB *cbb);
+
+// ssl_session_is_context_valid returns one if |session|'s session ID context
+// matches the one set on |hs| and zero otherwise.
+int ssl_session_is_context_valid(const SSL_HANDSHAKE *hs,
+                                 const SSL_SESSION *session);
+
+// ssl_session_is_time_valid returns one if |session| is still valid and zero if
+// it has expired.
+int ssl_session_is_time_valid(const SSL *ssl, const SSL_SESSION *session);
+
+// ssl_session_is_resumable returns one if |session| is resumable for |hs| and
+// zero otherwise.
+int ssl_session_is_resumable(const SSL_HANDSHAKE *hs,
+                             const SSL_SESSION *session);
+
+// ssl_session_protocol_version returns the protocol version associated with
+// |session|. Note that despite the name, this is not the same as
+// |SSL_SESSION_get_protocol_version|. The latter is based on upstream's name.
+uint16_t ssl_session_protocol_version(const SSL_SESSION *session);
+
+// ssl_session_get_digest returns the digest used in |session|.
+const EVP_MD *ssl_session_get_digest(const SSL_SESSION *session);
+
+void ssl_set_session(SSL *ssl, SSL_SESSION *session);
+
+// ssl_get_prev_session looks up the previous session based on |client_hello|.
+// On success, it sets |*out_session| to the session or nullptr if none was
+// found. If the session could not be looked up synchronously, it returns
+// |ssl_hs_pending_session| and should be called again. If a ticket could not be
+// decrypted immediately it returns |ssl_hs_pending_ticket| and should also
+// be called again. Otherwise, it returns |ssl_hs_error|.
+enum ssl_hs_wait_t ssl_get_prev_session(SSL_HANDSHAKE *hs,
+                                        UniquePtr<SSL_SESSION> *out_session,
+                                        bool *out_tickets_supported,
+                                        bool *out_renew_ticket,
+                                        const SSL_CLIENT_HELLO *client_hello);
+
+// The following flags determine which parts of the session are duplicated.
+#define SSL_SESSION_DUP_AUTH_ONLY 0x0
+#define SSL_SESSION_INCLUDE_TICKET 0x1
+#define SSL_SESSION_INCLUDE_NONAUTH 0x2
+#define SSL_SESSION_DUP_ALL \
+  (SSL_SESSION_INCLUDE_TICKET | SSL_SESSION_INCLUDE_NONAUTH)
+
+// SSL_SESSION_dup returns a newly-allocated |SSL_SESSION| with a copy of the
+// fields in |session| or nullptr on error. The new session is non-resumable and
+// must be explicitly marked resumable once it has been filled in.
+OPENSSL_EXPORT UniquePtr<SSL_SESSION> SSL_SESSION_dup(SSL_SESSION *session,
+                                                      int dup_flags);
+
+// ssl_session_rebase_time updates |session|'s start time to the current time,
+// adjusting the timeout so the expiration time is unchanged.
+void ssl_session_rebase_time(SSL *ssl, SSL_SESSION *session);
+
+// ssl_session_renew_timeout calls |ssl_session_rebase_time| and renews
+// |session|'s timeout to |timeout| (measured from the current time). The
+// renewal is clamped to the session's auth_timeout.
+void ssl_session_renew_timeout(SSL *ssl, SSL_SESSION *session,
+                               uint32_t timeout);
+
+void ssl_update_cache(SSL_HANDSHAKE *hs, int mode);
+
+void ssl_send_alert(SSL *ssl, int level, int desc);
+int ssl_send_alert_impl(SSL *ssl, int level, int desc);
+bool ssl3_get_message(const SSL *ssl, SSLMessage *out);
+ssl_open_record_t ssl3_open_handshake(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in);
+void ssl3_next_message(SSL *ssl);
+
+int ssl3_dispatch_alert(SSL *ssl);
+ssl_open_record_t ssl3_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in);
+ssl_open_record_t ssl3_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in);
+int ssl3_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *buf,
+                        int len);
+
+bool ssl3_new(SSL *ssl);
+void ssl3_free(SSL *ssl);
+
+bool ssl3_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+bool ssl3_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg);
+bool ssl3_add_message(SSL *ssl, Array<uint8_t> msg);
+bool ssl3_add_change_cipher_spec(SSL *ssl);
+int ssl3_flush_flight(SSL *ssl);
+
+bool dtls1_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type);
+bool dtls1_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg);
+bool dtls1_add_message(SSL *ssl, Array<uint8_t> msg);
+bool dtls1_add_change_cipher_spec(SSL *ssl);
+int dtls1_flush_flight(SSL *ssl);
+
+// ssl_add_message_cbb finishes the handshake message in |cbb| and adds it to
+// the pending flight. It returns true on success and false on error.
+bool ssl_add_message_cbb(SSL *ssl, CBB *cbb);
+
+// ssl_hash_message incorporates |msg| into the handshake hash. It returns true
+// on success and false on allocation failure.
+bool ssl_hash_message(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+ssl_open_record_t dtls1_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                      size_t *out_consumed, uint8_t *out_alert,
+                                      Span<uint8_t> in);
+ssl_open_record_t dtls1_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                                uint8_t *out_alert,
+                                                Span<uint8_t> in);
+
+int dtls1_write_app_data(SSL *ssl, bool *out_needs_handshake,
+                         const uint8_t *buf, int len);
+
+// dtls1_write_record sends a record. It returns one on success and <= 0 on
+// error.
+int dtls1_write_record(SSL *ssl, int type, const uint8_t *buf, size_t len,
+                       enum dtls1_use_epoch_t use_epoch);
+
+int dtls1_retransmit_outgoing_messages(SSL *ssl);
+bool dtls1_parse_fragment(CBS *cbs, struct hm_header_st *out_hdr,
+                          CBS *out_body);
+bool dtls1_check_timeout_num(SSL *ssl);
+
+void dtls1_start_timer(SSL *ssl);
+void dtls1_stop_timer(SSL *ssl);
+bool dtls1_is_timer_expired(SSL *ssl);
+unsigned int dtls1_min_mtu(void);
+
+bool dtls1_new(SSL *ssl);
+void dtls1_free(SSL *ssl);
+
+bool dtls1_get_message(const SSL *ssl, SSLMessage *out);
+ssl_open_record_t dtls1_open_handshake(SSL *ssl, size_t *out_consumed,
+                                       uint8_t *out_alert, Span<uint8_t> in);
+void dtls1_next_message(SSL *ssl);
+int dtls1_dispatch_alert(SSL *ssl);
+
+// tls1_configure_aead configures either the read or write direction AEAD (as
+// determined by |direction|) using the keys generated by the TLS KDF. The
+// |key_block_cache| argument is used to store the generated key block, if
+// empty. Otherwise it's assumed that the key block is already contained within
+// it. Returns one on success or zero on error.
+int tls1_configure_aead(SSL *ssl, evp_aead_direction_t direction,
+                        Array<uint8_t> *key_block_cache,
+                        const SSL_CIPHER *cipher,
+                        Span<const uint8_t> iv_override);
+
+int tls1_change_cipher_state(SSL_HANDSHAKE *hs, evp_aead_direction_t direction);
+int tls1_generate_master_secret(SSL_HANDSHAKE *hs, uint8_t *out,
+                                Span<const uint8_t> premaster);
+
+// tls1_get_grouplist returns the locally-configured group preference list.
+Span<const uint16_t> tls1_get_grouplist(const SSL_HANDSHAKE *ssl);
+
+// tls1_check_group_id returns whether |group_id| is consistent with locally-
+// configured group preferences.
+bool tls1_check_group_id(const SSL_HANDSHAKE *ssl, uint16_t group_id);
+
+// tls1_get_shared_group sets |*out_group_id| to the first preferred shared
+// group between client and server preferences and returns true. If none may be
+// found, it returns false.
+bool tls1_get_shared_group(SSL_HANDSHAKE *hs, uint16_t *out_group_id);
+
+// tls1_set_curves converts the array of NIDs in |curves| into a newly allocated
+// array of TLS group IDs. On success, the function returns true and writes the
+// array to |*out_group_ids|. Otherwise, it returns false.
+bool tls1_set_curves(Array<uint16_t> *out_group_ids, Span<const int> curves);
+
+// tls1_set_curves_list converts the string of curves pointed to by |curves|
+// into a newly allocated array of TLS group IDs. On success, the function
+// returns true and writes the array to |*out_group_ids|. Otherwise, it returns
+// false.
+bool tls1_set_curves_list(Array<uint16_t> *out_group_ids, const char *curves);
+
+// ssl_add_clienthello_tlsext writes ClientHello extensions to |out|. It returns
+// true on success and false on failure. The |header_len| argument is the length
+// of the ClientHello written so far and is used to compute the padding length.
+// (It does not include the record header.)
+bool ssl_add_clienthello_tlsext(SSL_HANDSHAKE *hs, CBB *out, size_t header_len);
+
+bool ssl_add_serverhello_tlsext(SSL_HANDSHAKE *hs, CBB *out);
+bool ssl_parse_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                  const SSL_CLIENT_HELLO *client_hello);
+bool ssl_parse_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs);
+
+#define tlsext_tick_md EVP_sha256
+
+// ssl_process_ticket processes a session ticket from the client. It returns
+// one of:
+//   |ssl_ticket_aead_success|: |*out_session| is set to the parsed session and
+//       |*out_renew_ticket| is set to whether the ticket should be renewed.
+//   |ssl_ticket_aead_ignore_ticket|: |*out_renew_ticket| is set to whether a
+//       fresh ticket should be sent, but the given ticket cannot be used.
+//   |ssl_ticket_aead_retry|: the ticket could not be immediately decrypted.
+//       Retry later.
+//   |ssl_ticket_aead_error|: an error occured that is fatal to the connection.
+enum ssl_ticket_aead_result_t ssl_process_ticket(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    bool *out_renew_ticket, Span<const uint8_t> ticket,
+    Span<const uint8_t> session_id);
+
+// tls1_verify_channel_id processes |msg| as a Channel ID message, and verifies
+// the signature. If the key is valid, it saves the Channel ID and returns true.
+// Otherwise, it returns false.
+bool tls1_verify_channel_id(SSL_HANDSHAKE *hs, const SSLMessage &msg);
+
+// tls1_write_channel_id generates a Channel ID message and puts the output in
+// |cbb|. |ssl->channel_id_private| must already be set before calling.  This
+// function returns true on success and false on error.
+bool tls1_write_channel_id(SSL_HANDSHAKE *hs, CBB *cbb);
+
+// tls1_channel_id_hash computes the hash to be signed by Channel ID and writes
+// it to |out|, which must contain at least |EVP_MAX_MD_SIZE| bytes. It returns
+// true on success and false on failure.
+bool tls1_channel_id_hash(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len);
+
+// tls1_record_handshake_hashes_for_channel_id records the current handshake
+// hashes in |hs->new_session| so that Channel ID resumptions can sign that
+// data.
+bool tls1_record_handshake_hashes_for_channel_id(SSL_HANDSHAKE *hs);
+
+// ssl_do_channel_id_callback checks runs |hs->ssl->ctx->channel_id_cb| if
+// necessary. It returns true on success and false on fatal error. Note that, on
+// success, |hs->ssl->channel_id_private| may be unset, in which case the
+// operation should be retried later.
+bool ssl_do_channel_id_callback(SSL_HANDSHAKE *hs);
+
+// ssl_can_write returns whether |ssl| is allowed to write.
+bool ssl_can_write(const SSL *ssl);
+
+// ssl_can_read returns wheter |ssl| is allowed to read.
+bool ssl_can_read(const SSL *ssl);
+
+void ssl_get_current_time(const SSL *ssl, struct OPENSSL_timeval *out_clock);
+void ssl_ctx_get_current_time(const SSL_CTX *ctx,
+                              struct OPENSSL_timeval *out_clock);
+
+// ssl_reset_error_state resets state for |SSL_get_error|.
+void ssl_reset_error_state(SSL *ssl);
+
+// ssl_set_read_error sets |ssl|'s read half into an error state, saving the
+// current state of the error queue.
+void ssl_set_read_error(SSL *ssl);
+
+BSSL_NAMESPACE_END
+
+
+// Opaque C types.
+//
+// The following types are exported to C code as public typedefs, so they must
+// be defined outside of the namespace.
+
+// ssl_method_st backs the public |SSL_METHOD| type. It is a compatibility
+// structure to support the legacy version-locked methods.
+struct ssl_method_st {
+  // version, if non-zero, is the only protocol version acceptable to an
+  // SSL_CTX initialized from this method.
+  uint16_t version;
+  // method is the underlying SSL_PROTOCOL_METHOD that initializes the
+  // SSL_CTX.
+  const bssl::SSL_PROTOCOL_METHOD *method;
+  // x509_method contains pointers to functions that might deal with |X509|
+  // compatibility, or might be a no-op, depending on the application.
+  const bssl::SSL_X509_METHOD *x509_method;
+};
+
+struct ssl_ctx_st {
+  explicit ssl_ctx_st(const SSL_METHOD *ssl_method);
+  ssl_ctx_st(const ssl_ctx_st &) = delete;
+  ssl_ctx_st &operator=(const ssl_ctx_st &) = delete;
+
+  const bssl::SSL_PROTOCOL_METHOD *method = nullptr;
+  const bssl::SSL_X509_METHOD *x509_method = nullptr;
+
+  // lock is used to protect various operations on this object.
+  CRYPTO_MUTEX lock;
+
+  // conf_max_version is the maximum acceptable protocol version configured by
+  // |SSL_CTX_set_max_proto_version|. Note this version is normalized in DTLS
+  // and is further constrainted by |SSL_OP_NO_*|.
+  uint16_t conf_max_version = 0;
+
+  // conf_min_version is the minimum acceptable protocol version configured by
+  // |SSL_CTX_set_min_proto_version|. Note this version is normalized in DTLS
+  // and is further constrainted by |SSL_OP_NO_*|.
+  uint16_t conf_min_version = 0;
+
+  // quic_method is the method table corresponding to the QUIC hooks.
+  const SSL_QUIC_METHOD *quic_method = nullptr;
+
+  bssl::UniquePtr<bssl::SSLCipherPreferenceList> cipher_list;
+
+  X509_STORE *cert_store = nullptr;
+  LHASH_OF(SSL_SESSION) *sessions = nullptr;
+  // Most session-ids that will be cached, default is
+  // SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
+  unsigned long session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
+  SSL_SESSION *session_cache_head = nullptr;
+  SSL_SESSION *session_cache_tail = nullptr;
+
+  // handshakes_since_cache_flush is the number of successful handshakes since
+  // the last cache flush.
+  int handshakes_since_cache_flush = 0;
+
+  // This can have one of 2 values, ored together,
+  // SSL_SESS_CACHE_CLIENT,
+  // SSL_SESS_CACHE_SERVER,
+  // Default is SSL_SESSION_CACHE_SERVER, which means only
+  // SSL_accept which cache SSL_SESSIONS.
+  int session_cache_mode = SSL_SESS_CACHE_SERVER;
+
+  // session_timeout is the default lifetime for new sessions in TLS 1.2 and
+  // earlier, in seconds.
+  uint32_t session_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // session_psk_dhe_timeout is the default lifetime for new sessions in TLS
+  // 1.3, in seconds.
+  uint32_t session_psk_dhe_timeout = SSL_DEFAULT_SESSION_PSK_DHE_TIMEOUT;
+
+  // If this callback is not null, it will be called each time a session id is
+  // added to the cache.  If this function returns 1, it means that the
+  // callback will do a SSL_SESSION_free() when it has finished using it.
+  // Otherwise, on 0, it means the callback has finished with it. If
+  // remove_session_cb is not null, it will be called when a session-id is
+  // removed from the cache.  After the call, OpenSSL will SSL_SESSION_free()
+  // it.
+  int (*new_session_cb)(SSL *ssl, SSL_SESSION *sess) = nullptr;
+  void (*remove_session_cb)(SSL_CTX *ctx, SSL_SESSION *sess) = nullptr;
+  SSL_SESSION *(*get_session_cb)(SSL *ssl, const uint8_t *data, int len,
+                                 int *copy) = nullptr;
+
+  CRYPTO_refcount_t references = 1;
+
+  // if defined, these override the X509_verify_cert() calls
+  int (*app_verify_callback)(X509_STORE_CTX *store_ctx, void *arg) = nullptr;
+  void *app_verify_arg = nullptr;
+
+  ssl_verify_result_t (*custom_verify_callback)(SSL *ssl,
+                                                uint8_t *out_alert) = nullptr;
+
+  // Default password callback.
+  pem_password_cb *default_passwd_callback = nullptr;
+
+  // Default password callback user data.
+  void *default_passwd_callback_userdata = nullptr;
+
+  // get client cert callback
+  int (*client_cert_cb)(SSL *ssl, X509 **out_x509,
+                        EVP_PKEY **out_pkey) = nullptr;
+
+  // get channel id callback
+  void (*channel_id_cb)(SSL *ssl, EVP_PKEY **out_pkey) = nullptr;
+
+  CRYPTO_EX_DATA ex_data;
+
+  // Default values used when no per-SSL value is defined follow
+
+  void (*info_callback)(const SSL *ssl, int type, int value) = nullptr;
+
+  // what we put in client cert requests
+  bssl::UniquePtr<STACK_OF(CRYPTO_BUFFER)> client_CA;
+
+  // cached_x509_client_CA is a cache of parsed versions of the elements of
+  // |client_CA|.
+  STACK_OF(X509_NAME) *cached_x509_client_CA = nullptr;
+
+
+  // Default values to use in SSL structures follow (these are copied by
+  // SSL_new)
+
+  uint32_t options = 0;
+  // Disable the auto-chaining feature by default. wpa_supplicant relies on this
+  // feature, but require callers opt into it.
+  uint32_t mode = SSL_MODE_NO_AUTO_CHAIN;
+  uint32_t max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
+
+  bssl::UniquePtr<bssl::CERT> cert;
+
+  // callback that allows applications to peek at protocol messages
+  void (*msg_callback)(int write_p, int version, int content_type,
+                       const void *buf, size_t len, SSL *ssl,
+                       void *arg) = nullptr;
+  void *msg_callback_arg = nullptr;
+
+  int verify_mode = SSL_VERIFY_NONE;
+  int (*default_verify_callback)(int ok, X509_STORE_CTX *ctx) =
+      nullptr;  // called 'verify_callback' in the SSL
+
+  X509_VERIFY_PARAM *param = nullptr;
+
+  // select_certificate_cb is called before most ClientHello processing and
+  // before the decision whether to resume a session is made. See
+  // |ssl_select_cert_result_t| for details of the return values.
+  ssl_select_cert_result_t (*select_certificate_cb)(const SSL_CLIENT_HELLO *) =
+      nullptr;
+
+  // dos_protection_cb is called once the resumption decision for a ClientHello
+  // has been made. It returns one to continue the handshake or zero to
+  // abort.
+  int (*dos_protection_cb)(const SSL_CLIENT_HELLO *) = nullptr;
+
+  // Controls whether to verify certificates when resuming connections. They
+  // were already verified when the connection was first made, so the default is
+  // false. For now, this is only respected on clients, not servers.
+  bool reverify_on_resume = false;
+
+  // Maximum amount of data to send in one fragment. actual record size can be
+  // more than this due to padding and MAC overheads.
+  uint16_t max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+
+  // TLS extensions servername callback
+  int (*servername_callback)(SSL *, int *, void *) = nullptr;
+  void *servername_arg = nullptr;
+
+  // RFC 4507 session ticket keys. |ticket_key_current| may be NULL before the
+  // first handshake and |ticket_key_prev| may be NULL at any time.
+  // Automatically generated ticket keys are rotated as needed at handshake
+  // time. Hence, all access must be synchronized through |lock|.
+  bssl::UniquePtr<bssl::TicketKey> ticket_key_current;
+  bssl::UniquePtr<bssl::TicketKey> ticket_key_prev;
+
+  // Callback to support customisation of ticket key setting
+  int (*ticket_key_cb)(SSL *ssl, uint8_t *name, uint8_t *iv,
+                       EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc) = nullptr;
+
+  // Server-only: psk_identity_hint is the default identity hint to send in
+  // PSK-based key exchanges.
+  bssl::UniquePtr<char> psk_identity_hint;
+
+  unsigned (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
+                                  unsigned max_identity_len, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+  unsigned (*psk_server_callback)(SSL *ssl, const char *identity, uint8_t *psk,
+                                  unsigned max_psk_len) = nullptr;
+
+
+  // Next protocol negotiation information
+  // (for experimental NPN extension).
+
+  // For a server, this contains a callback function by which the set of
+  // advertised protocols can be provided.
+  int (*next_protos_advertised_cb)(SSL *ssl, const uint8_t **out,
+                                   unsigned *out_len, void *arg) = nullptr;
+  void *next_protos_advertised_cb_arg = nullptr;
+  // For a client, this contains a callback function that selects the
+  // next protocol from the list provided by the server.
+  int (*next_proto_select_cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                              const uint8_t *in, unsigned in_len,
+                              void *arg) = nullptr;
+  void *next_proto_select_cb_arg = nullptr;
+
+  // ALPN information
+  // (we are in the process of transitioning from NPN to ALPN.)
+
+  // For a server, this contains a callback function that allows the
+  // server to select the protocol for the connection.
+  //   out: on successful return, this must point to the raw protocol
+  //        name (without the length prefix).
+  //   outlen: on successful return, this contains the length of |*out|.
+  //   in: points to the client's list of supported protocols in
+  //       wire-format.
+  //   inlen: the length of |in|.
+  int (*alpn_select_cb)(SSL *ssl, const uint8_t **out, uint8_t *out_len,
+                        const uint8_t *in, unsigned in_len,
+                        void *arg) = nullptr;
+  void *alpn_select_cb_arg = nullptr;
+
+  // For a client, this contains the list of supported protocols in wire
+  // format.
+  bssl::Array<uint8_t> alpn_client_proto_list;
+
+  // SRTP profiles we are willing to do from RFC 5764
+  bssl::UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> srtp_profiles;
+
+  // Defined compression algorithms for certificates.
+  bssl::GrowableArray<bssl::CertCompressionAlg> cert_compression_algs;
+
+  // Supported group values inherited by SSL structure
+  bssl::Array<uint16_t> supported_group_list;
+
+  // The client's Channel ID private key.
+  bssl::UniquePtr<EVP_PKEY> channel_id_private;
+
+  // keylog_callback, if not NULL, is the key logging callback. See
+  // |SSL_CTX_set_keylog_callback|.
+  void (*keylog_callback)(const SSL *ssl, const char *line) = nullptr;
+
+  // current_time_cb, if not NULL, is the function to use to get the current
+  // time. It sets |*out_clock| to the current time. The |ssl| argument is
+  // always NULL. See |SSL_CTX_set_current_time_cb|.
+  void (*current_time_cb)(const SSL *ssl, struct timeval *out_clock) = nullptr;
+
+  // pool is used for all |CRYPTO_BUFFER|s in case we wish to share certificate
+  // memory.
+  CRYPTO_BUFFER_POOL *pool = nullptr;
+
+  // ticket_aead_method contains function pointers for opening and sealing
+  // session tickets.
+  const SSL_TICKET_AEAD_METHOD *ticket_aead_method = nullptr;
+
+  // legacy_ocsp_callback implements an OCSP-related callback for OpenSSL
+  // compatibility.
+  int (*legacy_ocsp_callback)(SSL *ssl, void *arg) = nullptr;
+  void *legacy_ocsp_callback_arg = nullptr;
+
+  // verify_sigalgs, if not empty, is the set of signature algorithms
+  // accepted from the peer in decreasing order of preference.
+  bssl::Array<uint16_t> verify_sigalgs;
+
+  // retain_only_sha256_of_client_certs is true if we should compute the SHA256
+  // hash of the peer's certificate and then discard it to save memory and
+  // session space. Only effective on the server side.
+  bool retain_only_sha256_of_client_certs : 1;
+
+  // quiet_shutdown is true if the connection should not send a close_notify on
+  // shutdown.
+  bool quiet_shutdown : 1;
+
+  // ocsp_stapling_enabled is only used by client connections and indicates
+  // whether OCSP stapling will be requested.
+  bool ocsp_stapling_enabled : 1;
+
+  // If true, a client will request certificate timestamps.
+  bool signed_cert_timestamps_enabled : 1;
+
+  // channel_id_enabled is whether Channel ID is enabled. For a server, means
+  // that we'll accept Channel IDs from clients.  For a client, means that we'll
+  // advertise support.
+  bool channel_id_enabled : 1;
+
+  // grease_enabled is whether draft-davidben-tls-grease-01 is enabled.
+  bool grease_enabled : 1;
+
+  // allow_unknown_alpn_protos is whether the client allows unsolicited ALPN
+  // protocols from the peer.
+  bool allow_unknown_alpn_protos : 1;
+
+  // ed25519_enabled is whether Ed25519 is advertised in the handshake.
+  bool ed25519_enabled : 1;
+
+  // false_start_allowed_without_alpn is whether False Start (if
+  // |SSL_MODE_ENABLE_FALSE_START| is enabled) is allowed without ALPN.
+  bool false_start_allowed_without_alpn : 1;
+
+  // ignore_tls13_downgrade is whether a connection should continue when the
+  // server random signals a downgrade.
+  bool ignore_tls13_downgrade:1;
+
+  // handoff indicates that a server should stop after receiving the
+  // ClientHello and pause the handshake in such a way that |SSL_get_error|
+  // returns |SSL_ERROR_HANDOFF|.
+  bool handoff : 1;
+
+  // If enable_early_data is true, early data can be sent and accepted.
+  bool enable_early_data : 1;
+
+ private:
+  ~ssl_ctx_st();
+  friend void SSL_CTX_free(SSL_CTX *);
+};
+
+struct ssl_st {
+  explicit ssl_st(SSL_CTX *ctx_arg);
+  ssl_st(const ssl_st &) = delete;
+  ssl_st &operator=(const ssl_st &) = delete;
+  ~ssl_st();
+
+  // method is the method table corresponding to the current protocol (DTLS or
+  // TLS).
+  const bssl::SSL_PROTOCOL_METHOD *method = nullptr;
+
+  // config is a container for handshake configuration.  Accesses to this field
+  // should check for nullptr, since configuration may be shed after the
+  // handshake completes.  (If you have the |SSL_HANDSHAKE| object at hand, use
+  // that instead, and skip the null check.)
+  bssl::UniquePtr<bssl::SSL_CONFIG> config;
+
+  // version is the protocol version.
+  uint16_t version = 0;
+
+  uint16_t max_send_fragment = 0;
+
+  // There are 2 BIO's even though they are normally both the same. This is so
+  // data can be read and written to different handlers
+
+  bssl::UniquePtr<BIO> rbio;  // used by SSL_read
+  bssl::UniquePtr<BIO> wbio;  // used by SSL_write
+
+  // do_handshake runs the handshake. On completion, it returns |ssl_hs_ok|.
+  // Otherwise, it returns a value corresponding to what operation is needed to
+  // progress.
+  bssl::ssl_hs_wait_t (*do_handshake)(bssl::SSL_HANDSHAKE *hs) = nullptr;
+
+  bssl::SSL3_STATE *s3 = nullptr;   // TLS variables
+  bssl::DTLS1_STATE *d1 = nullptr;  // DTLS variables
+
+  // callback that allows applications to peek at protocol messages
+  void (*msg_callback)(int write_p, int version, int content_type,
+                       const void *buf, size_t len, SSL *ssl,
+                       void *arg) = nullptr;
+  void *msg_callback_arg = nullptr;
+
+  // session info
+
+  // initial_timeout_duration_ms is the default DTLS timeout duration in
+  // milliseconds. It's used to initialize the timer any time it's restarted.
+  //
+  // RFC 6347 states that implementations SHOULD use an initial timer value of 1
+  // second.
+  unsigned initial_timeout_duration_ms = 1000;
+
+  // session is the configured session to be offered by the client. This session
+  // is immutable.
+  bssl::UniquePtr<SSL_SESSION> session;
+
+  void (*info_callback)(const SSL *ssl, int type, int value) = nullptr;
+
+  bssl::UniquePtr<SSL_CTX> ctx;
+
+  // session_ctx is the |SSL_CTX| used for the session cache and related
+  // settings.
+  bssl::UniquePtr<SSL_CTX> session_ctx;
+
+  // extra application data
+  CRYPTO_EX_DATA ex_data;
+
+  uint32_t options = 0;  // protocol behaviour
+  uint32_t mode = 0;     // API behaviour
+  uint32_t max_cert_list = 0;
+  bssl::UniquePtr<char> hostname;
+
+  // quic_method is the method table corresponding to the QUIC hooks.
+  const SSL_QUIC_METHOD *quic_method = nullptr;
+
+  // renegotiate_mode controls how peer renegotiation attempts are handled.
+  ssl_renegotiate_mode_t renegotiate_mode = ssl_renegotiate_never;
+
+  // server is true iff the this SSL* is the server half. Note: before the SSL*
+  // is initialized by either SSL_set_accept_state or SSL_set_connect_state,
+  // the side is not determined. In this state, server is always false.
+  bool server : 1;
+
+  // quiet_shutdown is true if the connection should not send a close_notify on
+  // shutdown.
+  bool quiet_shutdown : 1;
+
+  // If enable_early_data is true, early data can be sent and accepted.
+  bool enable_early_data : 1;
+};
+
+struct ssl_session_st {
+  explicit ssl_session_st(const bssl::SSL_X509_METHOD *method);
+  ssl_session_st(const ssl_session_st &) = delete;
+  ssl_session_st &operator=(const ssl_session_st &) = delete;
+
+  CRYPTO_refcount_t references = 1;
+
+  // ssl_version is the (D)TLS version that established the session.
+  uint16_t ssl_version = 0;
+
+  // group_id is the ID of the ECDH group used to establish this session or zero
+  // if not applicable or unknown.
+  uint16_t group_id = 0;
+
+  // peer_signature_algorithm is the signature algorithm used to authenticate
+  // the peer, or zero if not applicable or unknown.
+  uint16_t peer_signature_algorithm = 0;
+
+  // master_key, in TLS 1.2 and below, is the master secret associated with the
+  // session. In TLS 1.3 and up, it is the resumption secret.
+  int master_key_length = 0;
+  uint8_t master_key[SSL_MAX_MASTER_KEY_LENGTH] = {0};
+
+  // session_id - valid?
+  unsigned session_id_length = 0;
+  uint8_t session_id[SSL_MAX_SSL_SESSION_ID_LENGTH] = {0};
+  // this is used to determine whether the session is being reused in
+  // the appropriate context. It is up to the application to set this,
+  // via SSL_new
+  uint8_t sid_ctx_length = 0;
+  uint8_t sid_ctx[SSL_MAX_SID_CTX_LENGTH] = {0};
+
+  bssl::UniquePtr<char> psk_identity;
+
+  // certs contains the certificate chain from the peer, starting with the leaf
+  // certificate.
+  bssl::UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs;
+
+  const bssl::SSL_X509_METHOD *x509_method = nullptr;
+
+  // x509_peer is the peer's certificate.
+  X509 *x509_peer = nullptr;
+
+  // x509_chain is the certificate chain sent by the peer. NOTE: for historical
+  // reasons, when a client (so the peer is a server), the chain includes
+  // |peer|, but when a server it does not.
+  STACK_OF(X509) *x509_chain = nullptr;
+
+  // x509_chain_without_leaf is a lazily constructed copy of |x509_chain| that
+  // omits the leaf certificate. This exists because OpenSSL, historically,
+  // didn't include the leaf certificate in the chain for a server, but did for
+  // a client. The |x509_chain| always includes it and, if an API call requires
+  // a chain without, it is stored here.
+  STACK_OF(X509) *x509_chain_without_leaf = nullptr;
+
+  // verify_result is the result of certificate verification in the case of
+  // non-fatal certificate errors.
+  long verify_result = X509_V_ERR_INVALID_CALL;
+
+  // timeout is the lifetime of the session in seconds, measured from |time|.
+  // This is renewable up to |auth_timeout|.
+  uint32_t timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // auth_timeout is the non-renewable lifetime of the session in seconds,
+  // measured from |time|.
+  uint32_t auth_timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+
+  // time is the time the session was issued, measured in seconds from the UNIX
+  // epoch.
+  uint64_t time = 0;
+
+  const SSL_CIPHER *cipher = nullptr;
+
+  CRYPTO_EX_DATA ex_data;  // application specific data
+
+  // These are used to make removal of session-ids more efficient and to
+  // implement a maximum cache size.
+  SSL_SESSION *prev = nullptr, *next = nullptr;
+
+  bssl::Array<uint8_t> ticket;
+
+  bssl::UniquePtr<CRYPTO_BUFFER> signed_cert_timestamp_list;
+
+  // The OCSP response that came with the session.
+  bssl::UniquePtr<CRYPTO_BUFFER> ocsp_response;
+
+  // peer_sha256 contains the SHA-256 hash of the peer's certificate if
+  // |peer_sha256_valid| is true.
+  uint8_t peer_sha256[SHA256_DIGEST_LENGTH] = {0};
+
+  // original_handshake_hash contains the handshake hash (either SHA-1+MD5 or
+  // SHA-2, depending on TLS version) for the original, full handshake that
+  // created a session. This is used by Channel IDs during resumption.
+  uint8_t original_handshake_hash[EVP_MAX_MD_SIZE] = {0};
+  uint8_t original_handshake_hash_len = 0;
+
+  uint32_t ticket_lifetime_hint = 0;  // Session lifetime hint in seconds
+
+  uint32_t ticket_age_add = 0;
+
+  // ticket_max_early_data is the maximum amount of data allowed to be sent as
+  // early data. If zero, 0-RTT is disallowed.
+  uint32_t ticket_max_early_data = 0;
+
+  // early_alpn is the ALPN protocol from the initial handshake. This is only
+  // stored for TLS 1.3 and above in order to enforce ALPN matching for 0-RTT
+  // resumptions.
+  bssl::Array<uint8_t> early_alpn;
+
+  // extended_master_secret is whether the master secret in this session was
+  // generated using EMS and thus isn't vulnerable to the Triple Handshake
+  // attack.
+  bool extended_master_secret : 1;
+
+  // peer_sha256_valid is whether |peer_sha256| is valid.
+  bool peer_sha256_valid : 1;  // Non-zero if peer_sha256 is valid
+
+  // not_resumable is used to indicate that session resumption is disallowed.
+  bool not_resumable : 1;
+
+  // ticket_age_add_valid is whether |ticket_age_add| is valid.
+  bool ticket_age_add_valid : 1;
+
+  // is_server is whether this session was created by a server.
+  bool is_server : 1;
+
+ private:
+  ~ssl_session_st();
+  friend void SSL_SESSION_free(SSL_SESSION *);
+};
+
+
+#endif  // OPENSSL_HEADER_SSL_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc
new file mode 100644
index 0000000..4f97461
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc	
@@ -0,0 +1,724 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <tuple>
+
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool add_record_to_flight(SSL *ssl, uint8_t type,
+                                 Span<const uint8_t> in) {
+  // The caller should have flushed |pending_hs_data| first.
+  assert(!ssl->s3->pending_hs_data);
+  // We'll never add a flight while in the process of writing it out.
+  assert(ssl->s3->pending_flight_offset == 0);
+
+  if (ssl->s3->pending_flight == nullptr) {
+    ssl->s3->pending_flight.reset(BUF_MEM_new());
+    if (ssl->s3->pending_flight == nullptr) {
+      return false;
+    }
+  }
+
+  size_t max_out = in.size() + SSL_max_seal_overhead(ssl);
+  size_t new_cap = ssl->s3->pending_flight->length + max_out;
+  if (max_out < in.size() || new_cap < max_out) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return false;
+  }
+
+  size_t len;
+  if (!BUF_MEM_reserve(ssl->s3->pending_flight.get(), new_cap) ||
+      !tls_seal_record(ssl,
+                       (uint8_t *)ssl->s3->pending_flight->data +
+                           ssl->s3->pending_flight->length,
+                       &len, max_out, type, in.data(), in.size())) {
+    return false;
+  }
+
+  ssl->s3->pending_flight->length += len;
+  return true;
+}
+
+bool ssl3_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type) {
+  // Pick a modest size hint to save most of the |realloc| calls.
+  if (!CBB_init(cbb, 64) ||
+      !CBB_add_u8(cbb, type) ||
+      !CBB_add_u24_length_prefixed(cbb, body)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    CBB_cleanup(cbb);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl3_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg) {
+  return CBBFinishArray(cbb, out_msg);
+}
+
+bool ssl3_add_message(SSL *ssl, Array<uint8_t> msg) {
+  // Pack handshake data into the minimal number of records. This avoids
+  // unnecessary encryption overhead, notably in TLS 1.3 where we send several
+  // encrypted messages in a row. For now, we do not do this for the null
+  // cipher. The benefit is smaller and there is a risk of breaking buggy
+  // implementations.
+  //
+  // TODO(davidben): See if we can do this uniformly.
+  Span<const uint8_t> rest = msg;
+  if (ssl->quic_method == nullptr &&
+      ssl->s3->aead_write_ctx->is_null_cipher()) {
+    while (!rest.empty()) {
+      Span<const uint8_t> chunk = rest.subspan(0, ssl->max_send_fragment);
+      rest = rest.subspan(chunk.size());
+
+      if (!add_record_to_flight(ssl, SSL3_RT_HANDSHAKE, chunk)) {
+        return false;
+      }
+    }
+  } else {
+    while (!rest.empty()) {
+      // Flush if |pending_hs_data| is full.
+      if (ssl->s3->pending_hs_data &&
+          ssl->s3->pending_hs_data->length >= ssl->max_send_fragment &&
+          !tls_flush_pending_hs_data(ssl)) {
+        return false;
+      }
+
+      size_t pending_len =
+          ssl->s3->pending_hs_data ? ssl->s3->pending_hs_data->length : 0;
+      Span<const uint8_t> chunk =
+          rest.subspan(0, ssl->max_send_fragment - pending_len);
+      assert(!chunk.empty());
+      rest = rest.subspan(chunk.size());
+
+      if (!ssl->s3->pending_hs_data) {
+        ssl->s3->pending_hs_data.reset(BUF_MEM_new());
+      }
+      if (!ssl->s3->pending_hs_data ||
+          !BUF_MEM_append(ssl->s3->pending_hs_data.get(), chunk.data(),
+                          chunk.size())) {
+        return false;
+      }
+    }
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HANDSHAKE, msg);
+  // TODO(svaldez): Move this up a layer to fix abstraction for SSLTranscript on
+  // hs.
+  if (ssl->s3->hs != NULL &&
+      !ssl->s3->hs->transcript.Update(msg)) {
+    return false;
+  }
+  return true;
+}
+
+bool tls_flush_pending_hs_data(SSL *ssl) {
+  if (!ssl->s3->pending_hs_data || ssl->s3->pending_hs_data->length == 0) {
+    return true;
+  }
+
+  UniquePtr<BUF_MEM> pending_hs_data = std::move(ssl->s3->pending_hs_data);
+  auto data =
+      MakeConstSpan(reinterpret_cast<const uint8_t *>(pending_hs_data->data),
+                    pending_hs_data->length);
+  if (ssl->quic_method) {
+    if (!ssl->quic_method->add_handshake_data(ssl, ssl->s3->write_level,
+                                              data.data(), data.size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+    return true;
+  }
+
+  return add_record_to_flight(ssl, SSL3_RT_HANDSHAKE, data);
+}
+
+bool ssl3_add_change_cipher_spec(SSL *ssl) {
+  static const uint8_t kChangeCipherSpec[1] = {SSL3_MT_CCS};
+
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return false;
+  }
+
+  if (!ssl->quic_method &&
+      !add_record_to_flight(ssl, SSL3_RT_CHANGE_CIPHER_SPEC,
+                            kChangeCipherSpec)) {
+    return false;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                      kChangeCipherSpec);
+  return true;
+}
+
+int ssl3_flush_flight(SSL *ssl) {
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return -1;
+  }
+
+  if (ssl->quic_method) {
+    if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+      return -1;
+    }
+
+    if (!ssl->quic_method->flush_flight(ssl)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return -1;
+    }
+  }
+
+  if (ssl->s3->pending_flight == nullptr) {
+    return 1;
+  }
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  static_assert(INT_MAX <= 0xffffffff, "int is larger than 32 bits");
+  if (ssl->s3->pending_flight->length > INT_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  // If there is pending data in the write buffer, it must be flushed out before
+  // any new data in pending_flight.
+  if (!ssl->s3->write_buffer.empty()) {
+    int ret = ssl_write_buffer_flush(ssl);
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+  }
+
+  // Write the pending flight.
+  while (ssl->s3->pending_flight_offset < ssl->s3->pending_flight->length) {
+    int ret = BIO_write(
+        ssl->wbio.get(),
+        ssl->s3->pending_flight->data + ssl->s3->pending_flight_offset,
+        ssl->s3->pending_flight->length - ssl->s3->pending_flight_offset);
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+
+    ssl->s3->pending_flight_offset += ret;
+  }
+
+  if (BIO_flush(ssl->wbio.get()) <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    return -1;
+  }
+
+  ssl->s3->pending_flight.reset();
+  ssl->s3->pending_flight_offset = 0;
+  return 1;
+}
+
+static ssl_open_record_t read_v2_client_hello(SSL *ssl, size_t *out_consumed,
+                                              Span<const uint8_t> in) {
+  *out_consumed = 0;
+  assert(in.size() >= SSL3_RT_HEADER_LENGTH);
+  // Determine the length of the V2ClientHello.
+  size_t msg_length = ((in[0] & 0x7f) << 8) | in[1];
+  if (msg_length > (1024 * 4)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return ssl_open_record_error;
+  }
+  if (msg_length < SSL3_RT_HEADER_LENGTH - 2) {
+    // Reject lengths that are too short early. We have already read
+    // |SSL3_RT_HEADER_LENGTH| bytes, so we should not attempt to process an
+    // (invalid) V2ClientHello which would be shorter than that.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_LENGTH_MISMATCH);
+    return ssl_open_record_error;
+  }
+
+  // Ask for the remainder of the V2ClientHello.
+  if (in.size() < 2 + msg_length) {
+    *out_consumed = 2 + msg_length;
+    return ssl_open_record_partial;
+  }
+
+  CBS v2_client_hello = CBS(ssl->s3->read_buffer.span().subspan(2, msg_length));
+  // The V2ClientHello without the length is incorporated into the handshake
+  // hash. This is only ever called at the start of the handshake, so hs is
+  // guaranteed to be non-NULL.
+  if (!ssl->s3->hs->transcript.Update(v2_client_hello)) {
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, 0 /* V2ClientHello */,
+                      v2_client_hello);
+
+  uint8_t msg_type;
+  uint16_t version, cipher_spec_length, session_id_length, challenge_length;
+  CBS cipher_specs, session_id, challenge;
+  if (!CBS_get_u8(&v2_client_hello, &msg_type) ||
+      !CBS_get_u16(&v2_client_hello, &version) ||
+      !CBS_get_u16(&v2_client_hello, &cipher_spec_length) ||
+      !CBS_get_u16(&v2_client_hello, &session_id_length) ||
+      !CBS_get_u16(&v2_client_hello, &challenge_length) ||
+      !CBS_get_bytes(&v2_client_hello, &cipher_specs, cipher_spec_length) ||
+      !CBS_get_bytes(&v2_client_hello, &session_id, session_id_length) ||
+      !CBS_get_bytes(&v2_client_hello, &challenge, challenge_length) ||
+      CBS_len(&v2_client_hello) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_open_record_error;
+  }
+
+  // msg_type has already been checked.
+  assert(msg_type == SSL2_MT_CLIENT_HELLO);
+
+  // The client_random is the V2ClientHello challenge. Truncate or left-pad with
+  // zeros as needed.
+  size_t rand_len = CBS_len(&challenge);
+  if (rand_len > SSL3_RANDOM_SIZE) {
+    rand_len = SSL3_RANDOM_SIZE;
+  }
+  uint8_t random[SSL3_RANDOM_SIZE];
+  OPENSSL_memset(random, 0, SSL3_RANDOM_SIZE);
+  OPENSSL_memcpy(random + (SSL3_RANDOM_SIZE - rand_len), CBS_data(&challenge),
+                 rand_len);
+
+  // Write out an equivalent TLS ClientHello directly to the handshake buffer.
+  size_t max_v3_client_hello = SSL3_HM_HEADER_LENGTH + 2 /* version */ +
+                               SSL3_RANDOM_SIZE + 1 /* session ID length */ +
+                               2 /* cipher list length */ +
+                               CBS_len(&cipher_specs) / 3 * 2 +
+                               1 /* compression length */ + 1 /* compression */;
+  ScopedCBB client_hello;
+  CBB hello_body, cipher_suites;
+  if (!ssl->s3->hs_buf) {
+    ssl->s3->hs_buf.reset(BUF_MEM_new());
+  }
+  if (!ssl->s3->hs_buf ||
+      !BUF_MEM_reserve(ssl->s3->hs_buf.get(), max_v3_client_hello) ||
+      !CBB_init_fixed(client_hello.get(), (uint8_t *)ssl->s3->hs_buf->data,
+                      ssl->s3->hs_buf->max) ||
+      !CBB_add_u8(client_hello.get(), SSL3_MT_CLIENT_HELLO) ||
+      !CBB_add_u24_length_prefixed(client_hello.get(), &hello_body) ||
+      !CBB_add_u16(&hello_body, version) ||
+      !CBB_add_bytes(&hello_body, random, SSL3_RANDOM_SIZE) ||
+      // No session id.
+      !CBB_add_u8(&hello_body, 0) ||
+      !CBB_add_u16_length_prefixed(&hello_body, &cipher_suites)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return ssl_open_record_error;
+  }
+
+  // Copy the cipher suites.
+  while (CBS_len(&cipher_specs) > 0) {
+    uint32_t cipher_spec;
+    if (!CBS_get_u24(&cipher_specs, &cipher_spec)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_open_record_error;
+    }
+
+    // Skip SSLv2 ciphers.
+    if ((cipher_spec & 0xff0000) != 0) {
+      continue;
+    }
+    if (!CBB_add_u16(&cipher_suites, cipher_spec)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_open_record_error;
+    }
+  }
+
+  // Add the null compression scheme and finish.
+  if (!CBB_add_u8(&hello_body, 1) ||
+      !CBB_add_u8(&hello_body, 0) ||
+      !CBB_finish(client_hello.get(), NULL, &ssl->s3->hs_buf->length)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_open_record_error;
+  }
+
+  *out_consumed = 2 + msg_length;
+  ssl->s3->is_v2_hello = true;
+  return ssl_open_record_success;
+}
+
+static bool parse_message(const SSL *ssl, SSLMessage *out,
+                          size_t *out_bytes_needed) {
+  if (!ssl->s3->hs_buf) {
+    *out_bytes_needed = 4;
+    return false;
+  }
+
+  CBS cbs;
+  uint32_t len;
+  CBS_init(&cbs, reinterpret_cast<const uint8_t *>(ssl->s3->hs_buf->data),
+           ssl->s3->hs_buf->length);
+  if (!CBS_get_u8(&cbs, &out->type) ||
+      !CBS_get_u24(&cbs, &len)) {
+    *out_bytes_needed = 4;
+    return false;
+  }
+
+  if (!CBS_get_bytes(&cbs, &out->body, len)) {
+    *out_bytes_needed = 4 + len;
+    return false;
+  }
+
+  CBS_init(&out->raw, reinterpret_cast<const uint8_t *>(ssl->s3->hs_buf->data),
+           4 + len);
+  out->is_v2_hello = ssl->s3->is_v2_hello;
+  return true;
+}
+
+bool ssl3_get_message(const SSL *ssl, SSLMessage *out) {
+  size_t unused;
+  if (!parse_message(ssl, out, &unused)) {
+    return false;
+  }
+  if (!ssl->s3->has_message) {
+    if (!out->is_v2_hello) {
+      ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HANDSHAKE, out->raw);
+    }
+    ssl->s3->has_message = true;
+  }
+  return true;
+}
+
+bool tls_can_accept_handshake_data(const SSL *ssl, uint8_t *out_alert) {
+  // If there is a complete message, the caller must have consumed it first.
+  SSLMessage msg;
+  size_t bytes_needed;
+  if (parse_message(ssl, &msg, &bytes_needed)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  // Enforce the limit so the peer cannot force us to buffer 16MB.
+  if (bytes_needed > 4 + ssl_max_handshake_message_len(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+bool tls_has_unprocessed_handshake_data(const SSL *ssl) {
+  size_t msg_len = 0;
+  if (ssl->s3->has_message) {
+    SSLMessage msg;
+    size_t unused;
+    if (parse_message(ssl, &msg, &unused)) {
+      msg_len = CBS_len(&msg.raw);
+    }
+  }
+
+  return ssl->s3->hs_buf && ssl->s3->hs_buf->length > msg_len;
+}
+
+bool tls_append_handshake_data(SSL *ssl, Span<const uint8_t> data) {
+  // Re-create the handshake buffer if needed.
+  if (!ssl->s3->hs_buf) {
+    ssl->s3->hs_buf.reset(BUF_MEM_new());
+  }
+  return ssl->s3->hs_buf &&
+         BUF_MEM_append(ssl->s3->hs_buf.get(), data.data(), data.size());
+}
+
+ssl_open_record_t ssl3_open_handshake(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  // Bypass the record layer for the first message to handle V2ClientHello.
+  if (ssl->server && !ssl->s3->v2_hello_done) {
+    // Ask for the first 5 bytes, the size of the TLS record header. This is
+    // sufficient to detect a V2ClientHello and ensures that we never read
+    // beyond the first record.
+    if (in.size() < SSL3_RT_HEADER_LENGTH) {
+      *out_consumed = SSL3_RT_HEADER_LENGTH;
+      return ssl_open_record_partial;
+    }
+
+    // Some dedicated error codes for protocol mixups should the application
+    // wish to interpret them differently. (These do not overlap with
+    // ClientHello or V2ClientHello.)
+    const char *str = reinterpret_cast<const char*>(in.data());
+    if (strncmp("GET ", str, 4) == 0 ||
+        strncmp("POST ", str, 5) == 0 ||
+        strncmp("HEAD ", str, 5) == 0 ||
+        strncmp("PUT ", str, 4) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_HTTP_REQUEST);
+      *out_alert = 0;
+      return ssl_open_record_error;
+    }
+    if (strncmp("CONNE", str, 5) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_HTTPS_PROXY_REQUEST);
+      *out_alert = 0;
+      return ssl_open_record_error;
+    }
+
+    // Check for a V2ClientHello.
+    if ((in[0] & 0x80) != 0 && in[2] == SSL2_MT_CLIENT_HELLO &&
+        in[3] == SSL3_VERSION_MAJOR) {
+      auto ret = read_v2_client_hello(ssl, out_consumed, in);
+      if (ret == ssl_open_record_error) {
+        *out_alert = 0;
+      } else if (ret == ssl_open_record_success) {
+        ssl->s3->v2_hello_done = true;
+      }
+      return ret;
+    }
+
+    ssl->s3->v2_hello_done = true;
+  }
+
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  // WatchGuard's TLS 1.3 interference bug is very distinctive: they drop the
+  // ServerHello and send the remaining encrypted application data records
+  // as-is. This manifests as an application data record when we expect
+  // handshake. Report a dedicated error code for this case.
+  if (!ssl->server && type == SSL3_RT_APPLICATION_DATA &&
+      ssl->s3->aead_read_ctx->is_null_cipher()) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (type != SSL3_RT_HANDSHAKE) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  // Append the entire handshake record to the buffer.
+  if (!tls_append_handshake_data(ssl, body)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return ssl_open_record_error;
+  }
+
+  return ssl_open_record_success;
+}
+
+void ssl3_next_message(SSL *ssl) {
+  SSLMessage msg;
+  if (!ssl3_get_message(ssl, &msg) ||
+      !ssl->s3->hs_buf ||
+      ssl->s3->hs_buf->length < CBS_len(&msg.raw)) {
+    assert(0);
+    return;
+  }
+
+  OPENSSL_memmove(ssl->s3->hs_buf->data,
+                  ssl->s3->hs_buf->data + CBS_len(&msg.raw),
+                  ssl->s3->hs_buf->length - CBS_len(&msg.raw));
+  ssl->s3->hs_buf->length -= CBS_len(&msg.raw);
+  ssl->s3->is_v2_hello = false;
+  ssl->s3->has_message = false;
+
+  // Post-handshake messages are rare, so release the buffer after every
+  // message. During the handshake, |on_handshake_complete| will release it.
+  if (!SSL_in_init(ssl) && ssl->s3->hs_buf->length == 0) {
+    ssl->s3->hs_buf.reset();
+  }
+}
+
+// CipherScorer produces a "score" for each possible cipher suite offered by
+// the client.
+class CipherScorer {
+ public:
+  CipherScorer(uint16_t group_id)
+      : aes_is_fine_(EVP_has_aes_hardware()),
+        security_128_is_fine_(group_id != SSL_CURVE_CECPQ2) {}
+
+  typedef std::tuple<bool, bool, bool> Score;
+
+  // MinScore returns a |Score| that will compare less than the score of all
+  // cipher suites.
+  Score MinScore() const {
+    return Score(false, false, false);
+  }
+
+  Score Evaluate(const SSL_CIPHER *a) const {
+    return Score(
+        // Something is always preferable to nothing.
+        true,
+        // Either 128-bit is fine, or 256-bit is preferred.
+        security_128_is_fine_ || a->algorithm_enc != SSL_AES128GCM,
+        // Either AES is fine, or else ChaCha20 is preferred.
+        aes_is_fine_ || a->algorithm_enc == SSL_CHACHA20POLY1305);
+  }
+
+ private:
+  const bool aes_is_fine_;
+  const bool security_128_is_fine_;
+};
+
+const SSL_CIPHER *ssl_choose_tls13_cipher(CBS cipher_suites, uint16_t version,
+                                          uint16_t group_id) {
+  if (CBS_len(&cipher_suites) % 2 != 0) {
+    return nullptr;
+  }
+
+  const SSL_CIPHER *best = nullptr;
+  CipherScorer scorer(group_id);
+  CipherScorer::Score best_score = scorer.MinScore();
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t cipher_suite;
+    if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
+      return nullptr;
+    }
+
+    // Limit to TLS 1.3 ciphers we know about.
+    const SSL_CIPHER *candidate = SSL_get_cipher_by_value(cipher_suite);
+    if (candidate == nullptr ||
+        SSL_CIPHER_get_min_version(candidate) > version ||
+        SSL_CIPHER_get_max_version(candidate) < version) {
+      continue;
+    }
+
+    const CipherScorer::Score candidate_score = scorer.Evaluate(candidate);
+    // |candidate_score| must be larger to displace the current choice. That way
+    // the client's order controls between ciphers with an equal score.
+    if (candidate_score > best_score) {
+      best = candidate;
+      best_score = candidate_score;
+    }
+  }
+
+  return best;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc.grpc_back
new file mode 100644
index 0000000..1ec596a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_both.cc.grpc_back	
@@ -0,0 +1,724 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <tuple>
+
+#include <openssl/buf.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/md5.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool add_record_to_flight(SSL *ssl, uint8_t type,
+                                 Span<const uint8_t> in) {
+  // The caller should have flushed |pending_hs_data| first.
+  assert(!ssl->s3->pending_hs_data);
+  // We'll never add a flight while in the process of writing it out.
+  assert(ssl->s3->pending_flight_offset == 0);
+
+  if (ssl->s3->pending_flight == nullptr) {
+    ssl->s3->pending_flight.reset(BUF_MEM_new());
+    if (ssl->s3->pending_flight == nullptr) {
+      return false;
+    }
+  }
+
+  size_t max_out = in.size() + SSL_max_seal_overhead(ssl);
+  size_t new_cap = ssl->s3->pending_flight->length + max_out;
+  if (max_out < in.size() || new_cap < max_out) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return false;
+  }
+
+  size_t len;
+  if (!BUF_MEM_reserve(ssl->s3->pending_flight.get(), new_cap) ||
+      !tls_seal_record(ssl,
+                       (uint8_t *)ssl->s3->pending_flight->data +
+                           ssl->s3->pending_flight->length,
+                       &len, max_out, type, in.data(), in.size())) {
+    return false;
+  }
+
+  ssl->s3->pending_flight->length += len;
+  return true;
+}
+
+bool ssl3_init_message(SSL *ssl, CBB *cbb, CBB *body, uint8_t type) {
+  // Pick a modest size hint to save most of the |realloc| calls.
+  if (!CBB_init(cbb, 64) ||
+      !CBB_add_u8(cbb, type) ||
+      !CBB_add_u24_length_prefixed(cbb, body)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    CBB_cleanup(cbb);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl3_finish_message(SSL *ssl, CBB *cbb, Array<uint8_t> *out_msg) {
+  return CBBFinishArray(cbb, out_msg);
+}
+
+bool ssl3_add_message(SSL *ssl, Array<uint8_t> msg) {
+  // Pack handshake data into the minimal number of records. This avoids
+  // unnecessary encryption overhead, notably in TLS 1.3 where we send several
+  // encrypted messages in a row. For now, we do not do this for the null
+  // cipher. The benefit is smaller and there is a risk of breaking buggy
+  // implementations.
+  //
+  // TODO(davidben): See if we can do this uniformly.
+  Span<const uint8_t> rest = msg;
+  if (ssl->quic_method == nullptr &&
+      ssl->s3->aead_write_ctx->is_null_cipher()) {
+    while (!rest.empty()) {
+      Span<const uint8_t> chunk = rest.subspan(0, ssl->max_send_fragment);
+      rest = rest.subspan(chunk.size());
+
+      if (!add_record_to_flight(ssl, SSL3_RT_HANDSHAKE, chunk)) {
+        return false;
+      }
+    }
+  } else {
+    while (!rest.empty()) {
+      // Flush if |pending_hs_data| is full.
+      if (ssl->s3->pending_hs_data &&
+          ssl->s3->pending_hs_data->length >= ssl->max_send_fragment &&
+          !tls_flush_pending_hs_data(ssl)) {
+        return false;
+      }
+
+      size_t pending_len =
+          ssl->s3->pending_hs_data ? ssl->s3->pending_hs_data->length : 0;
+      Span<const uint8_t> chunk =
+          rest.subspan(0, ssl->max_send_fragment - pending_len);
+      assert(!chunk.empty());
+      rest = rest.subspan(chunk.size());
+
+      if (!ssl->s3->pending_hs_data) {
+        ssl->s3->pending_hs_data.reset(BUF_MEM_new());
+      }
+      if (!ssl->s3->pending_hs_data ||
+          !BUF_MEM_append(ssl->s3->pending_hs_data.get(), chunk.data(),
+                          chunk.size())) {
+        return false;
+      }
+    }
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HANDSHAKE, msg);
+  // TODO(svaldez): Move this up a layer to fix abstraction for SSLTranscript on
+  // hs.
+  if (ssl->s3->hs != NULL &&
+      !ssl->s3->hs->transcript.Update(msg)) {
+    return false;
+  }
+  return true;
+}
+
+bool tls_flush_pending_hs_data(SSL *ssl) {
+  if (!ssl->s3->pending_hs_data || ssl->s3->pending_hs_data->length == 0) {
+    return true;
+  }
+
+  UniquePtr<BUF_MEM> pending_hs_data = std::move(ssl->s3->pending_hs_data);
+  auto data =
+      MakeConstSpan(reinterpret_cast<const uint8_t *>(pending_hs_data->data),
+                    pending_hs_data->length);
+  if (ssl->quic_method) {
+    if (!ssl->quic_method->add_handshake_data(ssl, ssl->s3->write_level,
+                                              data.data(), data.size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+    return true;
+  }
+
+  return add_record_to_flight(ssl, SSL3_RT_HANDSHAKE, data);
+}
+
+bool ssl3_add_change_cipher_spec(SSL *ssl) {
+  static const uint8_t kChangeCipherSpec[1] = {SSL3_MT_CCS};
+
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return false;
+  }
+
+  if (!ssl->quic_method &&
+      !add_record_to_flight(ssl, SSL3_RT_CHANGE_CIPHER_SPEC,
+                            kChangeCipherSpec)) {
+    return false;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_CHANGE_CIPHER_SPEC,
+                      kChangeCipherSpec);
+  return true;
+}
+
+int ssl3_flush_flight(SSL *ssl) {
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return -1;
+  }
+
+  if (ssl->quic_method) {
+    if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+      return -1;
+    }
+
+    if (!ssl->quic_method->flush_flight(ssl)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return -1;
+    }
+  }
+
+  if (ssl->s3->pending_flight == nullptr) {
+    return 1;
+  }
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  static_assert(INT_MAX <= 0xffffffff, "int is larger than 32 bits");
+  if (ssl->s3->pending_flight->length > INT_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  // If there is pending data in the write buffer, it must be flushed out before
+  // any new data in pending_flight.
+  if (!ssl->s3->write_buffer.empty()) {
+    int ret = ssl_write_buffer_flush(ssl);
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+  }
+
+  // Write the pending flight.
+  while (ssl->s3->pending_flight_offset < ssl->s3->pending_flight->length) {
+    int ret = BIO_write(
+        ssl->wbio.get(),
+        ssl->s3->pending_flight->data + ssl->s3->pending_flight_offset,
+        ssl->s3->pending_flight->length - ssl->s3->pending_flight_offset);
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+
+    ssl->s3->pending_flight_offset += ret;
+  }
+
+  if (BIO_flush(ssl->wbio.get()) <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    return -1;
+  }
+
+  ssl->s3->pending_flight.reset();
+  ssl->s3->pending_flight_offset = 0;
+  return 1;
+}
+
+static ssl_open_record_t read_v2_client_hello(SSL *ssl, size_t *out_consumed,
+                                              Span<const uint8_t> in) {
+  *out_consumed = 0;
+  assert(in.size() >= SSL3_RT_HEADER_LENGTH);
+  // Determine the length of the V2ClientHello.
+  size_t msg_length = ((in[0] & 0x7f) << 8) | in[1];
+  if (msg_length > (1024 * 4)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return ssl_open_record_error;
+  }
+  if (msg_length < SSL3_RT_HEADER_LENGTH - 2) {
+    // Reject lengths that are too short early. We have already read
+    // |SSL3_RT_HEADER_LENGTH| bytes, so we should not attempt to process an
+    // (invalid) V2ClientHello which would be shorter than that.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_LENGTH_MISMATCH);
+    return ssl_open_record_error;
+  }
+
+  // Ask for the remainder of the V2ClientHello.
+  if (in.size() < 2 + msg_length) {
+    *out_consumed = 2 + msg_length;
+    return ssl_open_record_partial;
+  }
+
+  CBS v2_client_hello = CBS(ssl->s3->read_buffer.span().subspan(2, msg_length));
+  // The V2ClientHello without the length is incorporated into the handshake
+  // hash. This is only ever called at the start of the handshake, so hs is
+  // guaranteed to be non-NULL.
+  if (!ssl->s3->hs->transcript.Update(v2_client_hello)) {
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, 0 /* V2ClientHello */,
+                      v2_client_hello);
+
+  uint8_t msg_type;
+  uint16_t version, cipher_spec_length, session_id_length, challenge_length;
+  CBS cipher_specs, session_id, challenge;
+  if (!CBS_get_u8(&v2_client_hello, &msg_type) ||
+      !CBS_get_u16(&v2_client_hello, &version) ||
+      !CBS_get_u16(&v2_client_hello, &cipher_spec_length) ||
+      !CBS_get_u16(&v2_client_hello, &session_id_length) ||
+      !CBS_get_u16(&v2_client_hello, &challenge_length) ||
+      !CBS_get_bytes(&v2_client_hello, &cipher_specs, cipher_spec_length) ||
+      !CBS_get_bytes(&v2_client_hello, &session_id, session_id_length) ||
+      !CBS_get_bytes(&v2_client_hello, &challenge, challenge_length) ||
+      CBS_len(&v2_client_hello) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_open_record_error;
+  }
+
+  // msg_type has already been checked.
+  assert(msg_type == SSL2_MT_CLIENT_HELLO);
+
+  // The client_random is the V2ClientHello challenge. Truncate or left-pad with
+  // zeros as needed.
+  size_t rand_len = CBS_len(&challenge);
+  if (rand_len > SSL3_RANDOM_SIZE) {
+    rand_len = SSL3_RANDOM_SIZE;
+  }
+  uint8_t random[SSL3_RANDOM_SIZE];
+  OPENSSL_memset(random, 0, SSL3_RANDOM_SIZE);
+  OPENSSL_memcpy(random + (SSL3_RANDOM_SIZE - rand_len), CBS_data(&challenge),
+                 rand_len);
+
+  // Write out an equivalent TLS ClientHello directly to the handshake buffer.
+  size_t max_v3_client_hello = SSL3_HM_HEADER_LENGTH + 2 /* version */ +
+                               SSL3_RANDOM_SIZE + 1 /* session ID length */ +
+                               2 /* cipher list length */ +
+                               CBS_len(&cipher_specs) / 3 * 2 +
+                               1 /* compression length */ + 1 /* compression */;
+  ScopedCBB client_hello;
+  CBB hello_body, cipher_suites;
+  if (!ssl->s3->hs_buf) {
+    ssl->s3->hs_buf.reset(BUF_MEM_new());
+  }
+  if (!ssl->s3->hs_buf ||
+      !BUF_MEM_reserve(ssl->s3->hs_buf.get(), max_v3_client_hello) ||
+      !CBB_init_fixed(client_hello.get(), (uint8_t *)ssl->s3->hs_buf->data,
+                      ssl->s3->hs_buf->max) ||
+      !CBB_add_u8(client_hello.get(), SSL3_MT_CLIENT_HELLO) ||
+      !CBB_add_u24_length_prefixed(client_hello.get(), &hello_body) ||
+      !CBB_add_u16(&hello_body, version) ||
+      !CBB_add_bytes(&hello_body, random, SSL3_RANDOM_SIZE) ||
+      // No session id.
+      !CBB_add_u8(&hello_body, 0) ||
+      !CBB_add_u16_length_prefixed(&hello_body, &cipher_suites)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return ssl_open_record_error;
+  }
+
+  // Copy the cipher suites.
+  while (CBS_len(&cipher_specs) > 0) {
+    uint32_t cipher_spec;
+    if (!CBS_get_u24(&cipher_specs, &cipher_spec)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_open_record_error;
+    }
+
+    // Skip SSLv2 ciphers.
+    if ((cipher_spec & 0xff0000) != 0) {
+      continue;
+    }
+    if (!CBB_add_u16(&cipher_suites, cipher_spec)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_open_record_error;
+    }
+  }
+
+  // Add the null compression scheme and finish.
+  if (!CBB_add_u8(&hello_body, 1) ||
+      !CBB_add_u8(&hello_body, 0) ||
+      !CBB_finish(client_hello.get(), NULL, &ssl->s3->hs_buf->length)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_open_record_error;
+  }
+
+  *out_consumed = 2 + msg_length;
+  ssl->s3->is_v2_hello = true;
+  return ssl_open_record_success;
+}
+
+static bool parse_message(const SSL *ssl, SSLMessage *out,
+                          size_t *out_bytes_needed) {
+  if (!ssl->s3->hs_buf) {
+    *out_bytes_needed = 4;
+    return false;
+  }
+
+  CBS cbs;
+  uint32_t len;
+  CBS_init(&cbs, reinterpret_cast<const uint8_t *>(ssl->s3->hs_buf->data),
+           ssl->s3->hs_buf->length);
+  if (!CBS_get_u8(&cbs, &out->type) ||
+      !CBS_get_u24(&cbs, &len)) {
+    *out_bytes_needed = 4;
+    return false;
+  }
+
+  if (!CBS_get_bytes(&cbs, &out->body, len)) {
+    *out_bytes_needed = 4 + len;
+    return false;
+  }
+
+  CBS_init(&out->raw, reinterpret_cast<const uint8_t *>(ssl->s3->hs_buf->data),
+           4 + len);
+  out->is_v2_hello = ssl->s3->is_v2_hello;
+  return true;
+}
+
+bool ssl3_get_message(const SSL *ssl, SSLMessage *out) {
+  size_t unused;
+  if (!parse_message(ssl, out, &unused)) {
+    return false;
+  }
+  if (!ssl->s3->has_message) {
+    if (!out->is_v2_hello) {
+      ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HANDSHAKE, out->raw);
+    }
+    ssl->s3->has_message = true;
+  }
+  return true;
+}
+
+bool tls_can_accept_handshake_data(const SSL *ssl, uint8_t *out_alert) {
+  // If there is a complete message, the caller must have consumed it first.
+  SSLMessage msg;
+  size_t bytes_needed;
+  if (parse_message(ssl, &msg, &bytes_needed)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  // Enforce the limit so the peer cannot force us to buffer 16MB.
+  if (bytes_needed > 4 + ssl_max_handshake_message_len(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+bool tls_has_unprocessed_handshake_data(const SSL *ssl) {
+  size_t msg_len = 0;
+  if (ssl->s3->has_message) {
+    SSLMessage msg;
+    size_t unused;
+    if (parse_message(ssl, &msg, &unused)) {
+      msg_len = CBS_len(&msg.raw);
+    }
+  }
+
+  return ssl->s3->hs_buf && ssl->s3->hs_buf->length > msg_len;
+}
+
+bool tls_append_handshake_data(SSL *ssl, Span<const uint8_t> data) {
+  // Re-create the handshake buffer if needed.
+  if (!ssl->s3->hs_buf) {
+    ssl->s3->hs_buf.reset(BUF_MEM_new());
+  }
+  return ssl->s3->hs_buf &&
+         BUF_MEM_append(ssl->s3->hs_buf.get(), data.data(), data.size());
+}
+
+ssl_open_record_t ssl3_open_handshake(SSL *ssl, size_t *out_consumed,
+                                      uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  // Bypass the record layer for the first message to handle V2ClientHello.
+  if (ssl->server && !ssl->s3->v2_hello_done) {
+    // Ask for the first 5 bytes, the size of the TLS record header. This is
+    // sufficient to detect a V2ClientHello and ensures that we never read
+    // beyond the first record.
+    if (in.size() < SSL3_RT_HEADER_LENGTH) {
+      *out_consumed = SSL3_RT_HEADER_LENGTH;
+      return ssl_open_record_partial;
+    }
+
+    // Some dedicated error codes for protocol mixups should the application
+    // wish to interpret them differently. (These do not overlap with
+    // ClientHello or V2ClientHello.)
+    const char *str = reinterpret_cast<const char*>(in.data());
+    if (strncmp("GET ", str, 4) == 0 ||
+        strncmp("POST ", str, 5) == 0 ||
+        strncmp("HEAD ", str, 5) == 0 ||
+        strncmp("PUT ", str, 4) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_HTTP_REQUEST);
+      *out_alert = 0;
+      return ssl_open_record_error;
+    }
+    if (strncmp("CONNE", str, 5) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_HTTPS_PROXY_REQUEST);
+      *out_alert = 0;
+      return ssl_open_record_error;
+    }
+
+    // Check for a V2ClientHello.
+    if ((in[0] & 0x80) != 0 && in[2] == SSL2_MT_CLIENT_HELLO &&
+        in[3] == SSL3_VERSION_MAJOR) {
+      auto ret = read_v2_client_hello(ssl, out_consumed, in);
+      if (ret == ssl_open_record_error) {
+        *out_alert = 0;
+      } else if (ret == ssl_open_record_success) {
+        ssl->s3->v2_hello_done = true;
+      }
+      return ret;
+    }
+
+    ssl->s3->v2_hello_done = true;
+  }
+
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  // WatchGuard's TLS 1.3 interference bug is very distinctive: they drop the
+  // ServerHello and send the remaining encrypted application data records
+  // as-is. This manifests as an application data record when we expect
+  // handshake. Report a dedicated error code for this case.
+  if (!ssl->server && type == SSL3_RT_APPLICATION_DATA &&
+      ssl->s3->aead_read_ctx->is_null_cipher()) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (type != SSL3_RT_HANDSHAKE) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  // Append the entire handshake record to the buffer.
+  if (!tls_append_handshake_data(ssl, body)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return ssl_open_record_error;
+  }
+
+  return ssl_open_record_success;
+}
+
+void ssl3_next_message(SSL *ssl) {
+  SSLMessage msg;
+  if (!ssl3_get_message(ssl, &msg) ||
+      !ssl->s3->hs_buf ||
+      ssl->s3->hs_buf->length < CBS_len(&msg.raw)) {
+    assert(0);
+    return;
+  }
+
+  OPENSSL_memmove(ssl->s3->hs_buf->data,
+                  ssl->s3->hs_buf->data + CBS_len(&msg.raw),
+                  ssl->s3->hs_buf->length - CBS_len(&msg.raw));
+  ssl->s3->hs_buf->length -= CBS_len(&msg.raw);
+  ssl->s3->is_v2_hello = false;
+  ssl->s3->has_message = false;
+
+  // Post-handshake messages are rare, so release the buffer after every
+  // message. During the handshake, |on_handshake_complete| will release it.
+  if (!SSL_in_init(ssl) && ssl->s3->hs_buf->length == 0) {
+    ssl->s3->hs_buf.reset();
+  }
+}
+
+// CipherScorer produces a "score" for each possible cipher suite offered by
+// the client.
+class CipherScorer {
+ public:
+  CipherScorer(uint16_t group_id)
+      : aes_is_fine_(EVP_has_aes_hardware()),
+        security_128_is_fine_(group_id != SSL_CURVE_CECPQ2) {}
+
+  typedef std::tuple<bool, bool, bool> Score;
+
+  // MinScore returns a |Score| that will compare less than the score of all
+  // cipher suites.
+  Score MinScore() const {
+    return Score(false, false, false);
+  }
+
+  Score Evaluate(const SSL_CIPHER *a) const {
+    return Score(
+        // Something is always preferable to nothing.
+        true,
+        // Either 128-bit is fine, or 256-bit is preferred.
+        security_128_is_fine_ || a->algorithm_enc != SSL_AES128GCM,
+        // Either AES is fine, or else ChaCha20 is preferred.
+        aes_is_fine_ || a->algorithm_enc == SSL_CHACHA20POLY1305);
+  }
+
+ private:
+  const bool aes_is_fine_;
+  const bool security_128_is_fine_;
+};
+
+const SSL_CIPHER *ssl_choose_tls13_cipher(CBS cipher_suites, uint16_t version,
+                                          uint16_t group_id) {
+  if (CBS_len(&cipher_suites) % 2 != 0) {
+    return nullptr;
+  }
+
+  const SSL_CIPHER *best = nullptr;
+  CipherScorer scorer(group_id);
+  CipherScorer::Score best_score = scorer.MinScore();
+
+  while (CBS_len(&cipher_suites) > 0) {
+    uint16_t cipher_suite;
+    if (!CBS_get_u16(&cipher_suites, &cipher_suite)) {
+      return nullptr;
+    }
+
+    // Limit to TLS 1.3 ciphers we know about.
+    const SSL_CIPHER *candidate = SSL_get_cipher_by_value(cipher_suite);
+    if (candidate == nullptr ||
+        SSL_CIPHER_get_min_version(candidate) > version ||
+        SSL_CIPHER_get_max_version(candidate) < version) {
+      continue;
+    }
+
+    const CipherScorer::Score candidate_score = scorer.Evaluate(candidate);
+    // |candidate_score| must be larger to displace the current choice. That way
+    // the client's order controls between ciphers with an equal score.
+    if (candidate_score > best_score) {
+      best = candidate;
+      best_score = candidate_score;
+    }
+  }
+
+  return best;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc
new file mode 100644
index 0000000..531f9a5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc	
@@ -0,0 +1,221 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSL3_STATE::SSL3_STATE()
+    : skip_early_data(false),
+      have_version(false),
+      v2_hello_done(false),
+      is_v2_hello(false),
+      has_message(false),
+      initial_handshake_complete(false),
+      session_reused(false),
+      delegated_credential_used(false),
+      send_connection_binding(false),
+      channel_id_valid(false),
+      key_update_pending(false),
+      wpend_pending(false),
+      early_data_accepted(false),
+      tls13_downgrade(false),
+      token_binding_negotiated(false),
+      alert_dispatch(false),
+      renegotiate_pending(false),
+      used_hello_retry_request(false) {}
+
+SSL3_STATE::~SSL3_STATE() {}
+
+bool ssl3_new(SSL *ssl) {
+  UniquePtr<SSL3_STATE> s3 = MakeUnique<SSL3_STATE>();
+  if (!s3) {
+    return false;
+  }
+
+  s3->aead_read_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  s3->aead_write_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  s3->hs = ssl_handshake_new(ssl);
+  if (!s3->aead_read_ctx || !s3->aead_write_ctx || !s3->hs) {
+    return false;
+  }
+
+  ssl->s3 = s3.release();
+
+  // Set the version to the highest supported version.
+  //
+  // TODO(davidben): Move this field into |s3|, have it store the normalized
+  // protocol version, and implement this pre-negotiation quirk in |SSL_version|
+  // at the API boundary rather than in internal state.
+  ssl->version = TLS1_2_VERSION;
+  return true;
+}
+
+void ssl3_free(SSL *ssl) {
+  if (ssl == NULL || ssl->s3 == NULL) {
+    return;
+  }
+
+  Delete(ssl->s3);
+  ssl->s3 = NULL;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc.grpc_back
new file mode 100644
index 0000000..978b108
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_lib.cc.grpc_back	
@@ -0,0 +1,221 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the OpenSSL open source
+ * license provided above.
+ *
+ * ECC cipher suite support in OpenSSL originally written by
+ * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSL3_STATE::SSL3_STATE()
+    : skip_early_data(false),
+      have_version(false),
+      v2_hello_done(false),
+      is_v2_hello(false),
+      has_message(false),
+      initial_handshake_complete(false),
+      session_reused(false),
+      delegated_credential_used(false),
+      send_connection_binding(false),
+      channel_id_valid(false),
+      key_update_pending(false),
+      wpend_pending(false),
+      early_data_accepted(false),
+      tls13_downgrade(false),
+      token_binding_negotiated(false),
+      alert_dispatch(false),
+      renegotiate_pending(false),
+      used_hello_retry_request(false) {}
+
+SSL3_STATE::~SSL3_STATE() {}
+
+bool ssl3_new(SSL *ssl) {
+  UniquePtr<SSL3_STATE> s3 = MakeUnique<SSL3_STATE>();
+  if (!s3) {
+    return false;
+  }
+
+  s3->aead_read_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  s3->aead_write_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  s3->hs = ssl_handshake_new(ssl);
+  if (!s3->aead_read_ctx || !s3->aead_write_ctx || !s3->hs) {
+    return false;
+  }
+
+  ssl->s3 = s3.release();
+
+  // Set the version to the highest supported version.
+  //
+  // TODO(davidben): Move this field into |s3|, have it store the normalized
+  // protocol version, and implement this pre-negotiation quirk in |SSL_version|
+  // at the API boundary rather than in internal state.
+  ssl->version = TLS1_2_VERSION;
+  return true;
+}
+
+void ssl3_free(SSL *ssl) {
+  if (ssl == NULL || ssl->s3 == NULL) {
+    return;
+  }
+
+  Delete(ssl->s3);
+  ssl->s3 = NULL;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc
new file mode 100644
index 0000000..19652ae
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc	
@@ -0,0 +1,458 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/err/internal.h"
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static int do_ssl3_write(SSL *ssl, int type, const uint8_t *in, unsigned len);
+
+int ssl3_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *in,
+                        int len) {
+  assert(ssl_can_write(ssl));
+  assert(!ssl->s3->aead_write_ctx->is_null_cipher());
+
+  *out_needs_handshake = false;
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  unsigned tot, n, nw;
+
+  assert(ssl->s3->wnum <= INT_MAX);
+  tot = ssl->s3->wnum;
+  ssl->s3->wnum = 0;
+
+  // Ensure that if we end up with a smaller value of data to write out than
+  // the the original len from a write which didn't complete for non-blocking
+  // I/O and also somehow ended up avoiding the check for this in
+  // ssl3_write_pending/SSL_R_BAD_WRITE_RETRY as it must never be possible to
+  // end up with (len-tot) as a large number that will then promptly send
+  // beyond the end of the users buffer ... so we trap and report the error in
+  // a way the user will notice.
+  if (len < 0 || (size_t)len < tot) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_LENGTH);
+    return -1;
+  }
+
+  const int is_early_data_write =
+      !ssl->server && SSL_in_early_data(ssl) && ssl->s3->hs->can_early_write;
+
+  n = len - tot;
+  for (;;) {
+    // max contains the maximum number of bytes that we can put into a record.
+    unsigned max = ssl->max_send_fragment;
+    if (is_early_data_write &&
+        max > ssl->session->ticket_max_early_data -
+                  ssl->s3->hs->early_data_written) {
+      max =
+          ssl->session->ticket_max_early_data - ssl->s3->hs->early_data_written;
+      if (max == 0) {
+        ssl->s3->wnum = tot;
+        ssl->s3->hs->can_early_write = false;
+        *out_needs_handshake = true;
+        return -1;
+      }
+    }
+
+    if (n > max) {
+      nw = max;
+    } else {
+      nw = n;
+    }
+
+    int ret = do_ssl3_write(ssl, SSL3_RT_APPLICATION_DATA, &in[tot], nw);
+    if (ret <= 0) {
+      ssl->s3->wnum = tot;
+      return ret;
+    }
+
+    if (is_early_data_write) {
+      ssl->s3->hs->early_data_written += ret;
+    }
+
+    if (ret == (int)n || (ssl->mode & SSL_MODE_ENABLE_PARTIAL_WRITE)) {
+      return tot + ret;
+    }
+
+    n -= ret;
+    tot += ret;
+  }
+}
+
+static int ssl3_write_pending(SSL *ssl, int type, const uint8_t *in,
+                              unsigned int len) {
+  if (ssl->s3->wpend_tot > (int)len ||
+      (!(ssl->mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) &&
+       ssl->s3->wpend_buf != in) ||
+      ssl->s3->wpend_type != type) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_WRITE_RETRY);
+    return -1;
+  }
+
+  int ret = ssl_write_buffer_flush(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  ssl->s3->wpend_pending = false;
+  return ssl->s3->wpend_ret;
+}
+
+// do_ssl3_write writes an SSL record of the given type.
+static int do_ssl3_write(SSL *ssl, int type, const uint8_t *in, unsigned len) {
+  // If there is still data from the previous record, flush it.
+  if (ssl->s3->wpend_pending) {
+    return ssl3_write_pending(ssl, type, in, len);
+  }
+
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH || buf->size() > 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return -1;
+  }
+
+  size_t flight_len = 0;
+  if (ssl->s3->pending_flight != nullptr) {
+    flight_len =
+        ssl->s3->pending_flight->length - ssl->s3->pending_flight_offset;
+  }
+
+  size_t max_out = flight_len;
+  if (len > 0) {
+    const size_t max_ciphertext_len = len + SSL_max_seal_overhead(ssl);
+    if (max_ciphertext_len < len || max_out + max_ciphertext_len < max_out) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return -1;
+    }
+    max_out += max_ciphertext_len;
+  }
+
+  if (max_out == 0) {
+    return 0;
+  }
+
+  if (!buf->EnsureCap(flight_len + ssl_seal_align_prefix_len(ssl), max_out)) {
+    return -1;
+  }
+
+  // Add any unflushed handshake data as a prefix. This may be a KeyUpdate
+  // acknowledgment or 0-RTT key change messages. |pending_flight| must be clear
+  // when data is added to |write_buffer| or it will be written in the wrong
+  // order.
+  if (ssl->s3->pending_flight != nullptr) {
+    OPENSSL_memcpy(
+        buf->remaining().data(),
+        ssl->s3->pending_flight->data + ssl->s3->pending_flight_offset,
+        flight_len);
+    ssl->s3->pending_flight.reset();
+    ssl->s3->pending_flight_offset = 0;
+    buf->DidWrite(flight_len);
+  }
+
+  if (len > 0) {
+    size_t ciphertext_len;
+    if (!tls_seal_record(ssl, buf->remaining().data(), &ciphertext_len,
+                         buf->remaining().size(), type, in, len)) {
+      return -1;
+    }
+    buf->DidWrite(ciphertext_len);
+  }
+
+  // Now that we've made progress on the connection, uncork KeyUpdate
+  // acknowledgments.
+  ssl->s3->key_update_pending = false;
+
+  // Memorize arguments so that ssl3_write_pending can detect bad write retries
+  // later.
+  ssl->s3->wpend_tot = len;
+  ssl->s3->wpend_buf = in;
+  ssl->s3->wpend_type = type;
+  ssl->s3->wpend_ret = len;
+  ssl->s3->wpend_pending = true;
+
+  // We now just need to write the buffer.
+  return ssl3_write_pending(ssl, type, in, len);
+}
+
+ssl_open_record_t ssl3_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in) {
+  assert(ssl_can_read(ssl));
+  assert(!ssl->s3->aead_read_ctx->is_null_cipher());
+
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  const bool is_early_data_read = ssl->server && SSL_in_early_data(ssl);
+
+  if (type == SSL3_RT_HANDSHAKE) {
+    // Post-handshake data prior to TLS 1.3 is always renegotiation, which we
+    // never accept as a server. Otherwise |ssl3_get_message| will send
+    // |SSL_R_EXCESSIVE_MESSAGE_SIZE|.
+    if (ssl->server && ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+      *out_alert = SSL_AD_NO_RENEGOTIATION;
+      return ssl_open_record_error;
+    }
+
+    if (!tls_append_handshake_data(ssl, body)) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  if (type != SSL3_RT_APPLICATION_DATA) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (is_early_data_read) {
+    if (body.size() > kMaxEarlyDataAccepted - ssl->s3->hs->early_data_read) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MUCH_READ_EARLY_DATA);
+      *out_alert = SSL3_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+
+    ssl->s3->hs->early_data_read += body.size();
+  }
+
+  if (body.empty()) {
+    return ssl_open_record_discard;
+  }
+
+  *out = body;
+  return ssl_open_record_success;
+}
+
+ssl_open_record_t ssl3_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in) {
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  if (type != SSL3_RT_CHANGE_CIPHER_SPEC) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (body.size() != 1 || body[0] != SSL3_MT_CCS) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_CHANGE_CIPHER_SPEC, body);
+  return ssl_open_record_success;
+}
+
+void ssl_send_alert(SSL *ssl, int level, int desc) {
+  // This function is called in response to a fatal error from the peer. Ignore
+  // any failures writing the alert and report only the original error. In
+  // particular, if the transport uses |SSL_write|, our existing error will be
+  // clobbered so we must save and restore the error queue. See
+  // https://crbug.com/959305.
+  //
+  // TODO(davidben): Return the alert out of the handshake, rather than calling
+  // this function internally everywhere.
+  //
+  // TODO(davidben): This does not allow retrying if the alert hit EAGAIN. See
+  // https://crbug.com/boringssl/130.
+  UniquePtr<ERR_SAVE_STATE> err_state(ERR_save_state());
+  ssl_send_alert_impl(ssl, level, desc);
+  ERR_restore_state(err_state.get());
+}
+
+int ssl_send_alert_impl(SSL *ssl, int level, int desc) {
+  // It is illegal to send an alert when we've already sent a closing one.
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  if (level == SSL3_AL_WARNING && desc == SSL_AD_CLOSE_NOTIFY) {
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+  } else {
+    assert(level == SSL3_AL_FATAL);
+    assert(desc != SSL_AD_CLOSE_NOTIFY);
+    ssl->s3->write_shutdown = ssl_shutdown_error;
+  }
+
+  ssl->s3->alert_dispatch = true;
+  ssl->s3->send_alert[0] = level;
+  ssl->s3->send_alert[1] = desc;
+  if (ssl->s3->write_buffer.empty()) {
+    // Nothing is being written out, so the alert may be dispatched
+    // immediately.
+    return ssl->method->dispatch_alert(ssl);
+  }
+
+  // The alert will be dispatched later.
+  return -1;
+}
+
+int ssl3_dispatch_alert(SSL *ssl) {
+  if (ssl->quic_method) {
+    if (!ssl->quic_method->send_alert(ssl, ssl->s3->write_level,
+                                      ssl->s3->send_alert[1])) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return 0;
+    }
+  } else {
+    int ret = do_ssl3_write(ssl, SSL3_RT_ALERT, &ssl->s3->send_alert[0], 2);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  ssl->s3->alert_dispatch = false;
+
+  // If the alert is fatal, flush the BIO now.
+  if (ssl->s3->send_alert[0] == SSL3_AL_FATAL) {
+    BIO_flush(ssl->wbio.get());
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_ALERT, ssl->s3->send_alert);
+
+  int alert = (ssl->s3->send_alert[0] << 8) | ssl->s3->send_alert[1];
+  ssl_do_info_callback(ssl, SSL_CB_WRITE_ALERT, alert);
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc.grpc_back
new file mode 100644
index 0000000..2fcc2a5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/s3_pkt.cc.grpc_back	
@@ -0,0 +1,458 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+
+#include "../crypto/err/internal.h"
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static int do_ssl3_write(SSL *ssl, int type, const uint8_t *in, unsigned len);
+
+int ssl3_write_app_data(SSL *ssl, bool *out_needs_handshake, const uint8_t *in,
+                        int len) {
+  assert(ssl_can_write(ssl));
+  assert(!ssl->s3->aead_write_ctx->is_null_cipher());
+
+  *out_needs_handshake = false;
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  unsigned tot, n, nw;
+
+  assert(ssl->s3->wnum <= INT_MAX);
+  tot = ssl->s3->wnum;
+  ssl->s3->wnum = 0;
+
+  // Ensure that if we end up with a smaller value of data to write out than
+  // the the original len from a write which didn't complete for non-blocking
+  // I/O and also somehow ended up avoiding the check for this in
+  // ssl3_write_pending/SSL_R_BAD_WRITE_RETRY as it must never be possible to
+  // end up with (len-tot) as a large number that will then promptly send
+  // beyond the end of the users buffer ... so we trap and report the error in
+  // a way the user will notice.
+  if (len < 0 || (size_t)len < tot) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_LENGTH);
+    return -1;
+  }
+
+  const int is_early_data_write =
+      !ssl->server && SSL_in_early_data(ssl) && ssl->s3->hs->can_early_write;
+
+  n = len - tot;
+  for (;;) {
+    // max contains the maximum number of bytes that we can put into a record.
+    unsigned max = ssl->max_send_fragment;
+    if (is_early_data_write &&
+        max > ssl->session->ticket_max_early_data -
+                  ssl->s3->hs->early_data_written) {
+      max =
+          ssl->session->ticket_max_early_data - ssl->s3->hs->early_data_written;
+      if (max == 0) {
+        ssl->s3->wnum = tot;
+        ssl->s3->hs->can_early_write = false;
+        *out_needs_handshake = true;
+        return -1;
+      }
+    }
+
+    if (n > max) {
+      nw = max;
+    } else {
+      nw = n;
+    }
+
+    int ret = do_ssl3_write(ssl, SSL3_RT_APPLICATION_DATA, &in[tot], nw);
+    if (ret <= 0) {
+      ssl->s3->wnum = tot;
+      return ret;
+    }
+
+    if (is_early_data_write) {
+      ssl->s3->hs->early_data_written += ret;
+    }
+
+    if (ret == (int)n || (ssl->mode & SSL_MODE_ENABLE_PARTIAL_WRITE)) {
+      return tot + ret;
+    }
+
+    n -= ret;
+    tot += ret;
+  }
+}
+
+static int ssl3_write_pending(SSL *ssl, int type, const uint8_t *in,
+                              unsigned int len) {
+  if (ssl->s3->wpend_tot > (int)len ||
+      (!(ssl->mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) &&
+       ssl->s3->wpend_buf != in) ||
+      ssl->s3->wpend_type != type) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_WRITE_RETRY);
+    return -1;
+  }
+
+  int ret = ssl_write_buffer_flush(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  ssl->s3->wpend_pending = false;
+  return ssl->s3->wpend_ret;
+}
+
+// do_ssl3_write writes an SSL record of the given type.
+static int do_ssl3_write(SSL *ssl, int type, const uint8_t *in, unsigned len) {
+  // If there is still data from the previous record, flush it.
+  if (ssl->s3->wpend_pending) {
+    return ssl3_write_pending(ssl, type, in, len);
+  }
+
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  if (len > SSL3_RT_MAX_PLAIN_LENGTH || buf->size() > 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return -1;
+  }
+
+  size_t flight_len = 0;
+  if (ssl->s3->pending_flight != nullptr) {
+    flight_len =
+        ssl->s3->pending_flight->length - ssl->s3->pending_flight_offset;
+  }
+
+  size_t max_out = flight_len;
+  if (len > 0) {
+    const size_t max_ciphertext_len = len + SSL_max_seal_overhead(ssl);
+    if (max_ciphertext_len < len || max_out + max_ciphertext_len < max_out) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return -1;
+    }
+    max_out += max_ciphertext_len;
+  }
+
+  if (max_out == 0) {
+    return 0;
+  }
+
+  if (!buf->EnsureCap(flight_len + ssl_seal_align_prefix_len(ssl), max_out)) {
+    return -1;
+  }
+
+  // Add any unflushed handshake data as a prefix. This may be a KeyUpdate
+  // acknowledgment or 0-RTT key change messages. |pending_flight| must be clear
+  // when data is added to |write_buffer| or it will be written in the wrong
+  // order.
+  if (ssl->s3->pending_flight != nullptr) {
+    OPENSSL_memcpy(
+        buf->remaining().data(),
+        ssl->s3->pending_flight->data + ssl->s3->pending_flight_offset,
+        flight_len);
+    ssl->s3->pending_flight.reset();
+    ssl->s3->pending_flight_offset = 0;
+    buf->DidWrite(flight_len);
+  }
+
+  if (len > 0) {
+    size_t ciphertext_len;
+    if (!tls_seal_record(ssl, buf->remaining().data(), &ciphertext_len,
+                         buf->remaining().size(), type, in, len)) {
+      return -1;
+    }
+    buf->DidWrite(ciphertext_len);
+  }
+
+  // Now that we've made progress on the connection, uncork KeyUpdate
+  // acknowledgments.
+  ssl->s3->key_update_pending = false;
+
+  // Memorize arguments so that ssl3_write_pending can detect bad write retries
+  // later.
+  ssl->s3->wpend_tot = len;
+  ssl->s3->wpend_buf = in;
+  ssl->s3->wpend_type = type;
+  ssl->s3->wpend_ret = len;
+  ssl->s3->wpend_pending = true;
+
+  // We now just need to write the buffer.
+  return ssl3_write_pending(ssl, type, in, len);
+}
+
+ssl_open_record_t ssl3_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                     size_t *out_consumed, uint8_t *out_alert,
+                                     Span<uint8_t> in) {
+  assert(ssl_can_read(ssl));
+  assert(!ssl->s3->aead_read_ctx->is_null_cipher());
+
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  const bool is_early_data_read = ssl->server && SSL_in_early_data(ssl);
+
+  if (type == SSL3_RT_HANDSHAKE) {
+    // Post-handshake data prior to TLS 1.3 is always renegotiation, which we
+    // never accept as a server. Otherwise |ssl3_get_message| will send
+    // |SSL_R_EXCESSIVE_MESSAGE_SIZE|.
+    if (ssl->server && ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+      *out_alert = SSL_AD_NO_RENEGOTIATION;
+      return ssl_open_record_error;
+    }
+
+    if (!tls_append_handshake_data(ssl, body)) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  if (type != SSL3_RT_APPLICATION_DATA) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (is_early_data_read) {
+    if (body.size() > kMaxEarlyDataAccepted - ssl->s3->hs->early_data_read) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MUCH_READ_EARLY_DATA);
+      *out_alert = SSL3_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+
+    ssl->s3->hs->early_data_read += body.size();
+  }
+
+  if (body.empty()) {
+    return ssl_open_record_discard;
+  }
+
+  *out = body;
+  return ssl_open_record_success;
+}
+
+ssl_open_record_t ssl3_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                               uint8_t *out_alert,
+                                               Span<uint8_t> in) {
+  uint8_t type;
+  Span<uint8_t> body;
+  auto ret = tls_open_record(ssl, &type, &body, out_consumed, out_alert, in);
+  if (ret != ssl_open_record_success) {
+    return ret;
+  }
+
+  if (type != SSL3_RT_CHANGE_CIPHER_SPEC) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  if (body.size() != 1 || body[0] != SSL3_MT_CCS) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_CHANGE_CIPHER_SPEC, body);
+  return ssl_open_record_success;
+}
+
+void ssl_send_alert(SSL *ssl, int level, int desc) {
+  // This function is called in response to a fatal error from the peer. Ignore
+  // any failures writing the alert and report only the original error. In
+  // particular, if the transport uses |SSL_write|, our existing error will be
+  // clobbered so we must save and restore the error queue. See
+  // https://crbug.com/959305.
+  //
+  // TODO(davidben): Return the alert out of the handshake, rather than calling
+  // this function internally everywhere.
+  //
+  // TODO(davidben): This does not allow retrying if the alert hit EAGAIN. See
+  // https://crbug.com/boringssl/130.
+  UniquePtr<ERR_SAVE_STATE> err_state(ERR_save_state());
+  ssl_send_alert_impl(ssl, level, desc);
+  ERR_restore_state(err_state.get());
+}
+
+int ssl_send_alert_impl(SSL *ssl, int level, int desc) {
+  // It is illegal to send an alert when we've already sent a closing one.
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  if (level == SSL3_AL_WARNING && desc == SSL_AD_CLOSE_NOTIFY) {
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+  } else {
+    assert(level == SSL3_AL_FATAL);
+    assert(desc != SSL_AD_CLOSE_NOTIFY);
+    ssl->s3->write_shutdown = ssl_shutdown_error;
+  }
+
+  ssl->s3->alert_dispatch = true;
+  ssl->s3->send_alert[0] = level;
+  ssl->s3->send_alert[1] = desc;
+  if (ssl->s3->write_buffer.empty()) {
+    // Nothing is being written out, so the alert may be dispatched
+    // immediately.
+    return ssl->method->dispatch_alert(ssl);
+  }
+
+  // The alert will be dispatched later.
+  return -1;
+}
+
+int ssl3_dispatch_alert(SSL *ssl) {
+  if (ssl->quic_method) {
+    if (!ssl->quic_method->send_alert(ssl, ssl->s3->write_level,
+                                      ssl->s3->send_alert[1])) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return 0;
+    }
+  } else {
+    int ret = do_ssl3_write(ssl, SSL3_RT_ALERT, &ssl->s3->send_alert[0], 2);
+    if (ret <= 0) {
+      return ret;
+    }
+  }
+
+  ssl->s3->alert_dispatch = false;
+
+  // If the alert is fatal, flush the BIO now.
+  if (ssl->s3->send_alert[0] == SSL3_AL_FATAL) {
+    BIO_flush(ssl->wbio.get());
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_ALERT, ssl->s3->send_alert);
+
+  int alert = (ssl->s3->send_alert[0] << 8) | ssl->s3->send_alert[1];
+  ssl_do_info_callback(ssl, SSL_CB_WRITE_ALERT, alert);
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc
new file mode 100644
index 0000000..33d7e1b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc	
@@ -0,0 +1,432 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+#define FUZZER_MODE true
+#else
+#define FUZZER_MODE false
+#endif
+
+BSSL_NAMESPACE_BEGIN
+
+SSLAEADContext::SSLAEADContext(uint16_t version_arg, bool is_dtls_arg,
+                               const SSL_CIPHER *cipher_arg)
+    : cipher_(cipher_arg),
+      version_(version_arg),
+      is_dtls_(is_dtls_arg),
+      variable_nonce_included_in_record_(false),
+      random_variable_nonce_(false),
+      xor_fixed_nonce_(false),
+      omit_length_in_ad_(false),
+      ad_is_header_(false) {
+  OPENSSL_memset(fixed_nonce_, 0, sizeof(fixed_nonce_));
+}
+
+SSLAEADContext::~SSLAEADContext() {}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::CreateNullCipher(bool is_dtls) {
+  return MakeUnique<SSLAEADContext>(0 /* version */, is_dtls,
+                                    nullptr /* cipher */);
+}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::Create(
+    enum evp_aead_direction_t direction, uint16_t version, bool is_dtls,
+    const SSL_CIPHER *cipher, Span<const uint8_t> enc_key,
+    Span<const uint8_t> mac_key, Span<const uint8_t> fixed_iv) {
+  const EVP_AEAD *aead;
+  uint16_t protocol_version;
+  size_t expected_mac_key_len, expected_fixed_iv_len;
+  if (!ssl_protocol_version_from_wire(&protocol_version, version) ||
+      !ssl_cipher_get_evp_aead(&aead, &expected_mac_key_len,
+                               &expected_fixed_iv_len, cipher, protocol_version,
+                               is_dtls) ||
+      // Ensure the caller returned correct key sizes.
+      expected_fixed_iv_len != fixed_iv.size() ||
+      expected_mac_key_len != mac_key.size()) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return nullptr;
+  }
+
+  uint8_t merged_key[EVP_AEAD_MAX_KEY_LENGTH];
+  if (!mac_key.empty()) {
+    // This is a "stateful" AEAD (for compatibility with pre-AEAD cipher
+    // suites).
+    if (mac_key.size() + enc_key.size() + fixed_iv.size() >
+        sizeof(merged_key)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return nullptr;
+    }
+    OPENSSL_memcpy(merged_key, mac_key.data(), mac_key.size());
+    OPENSSL_memcpy(merged_key + mac_key.size(), enc_key.data(), enc_key.size());
+    OPENSSL_memcpy(merged_key + mac_key.size() + enc_key.size(),
+                   fixed_iv.data(), fixed_iv.size());
+    enc_key = MakeConstSpan(merged_key,
+                            enc_key.size() + mac_key.size() + fixed_iv.size());
+  }
+
+  UniquePtr<SSLAEADContext> aead_ctx =
+      MakeUnique<SSLAEADContext>(version, is_dtls, cipher);
+  if (!aead_ctx) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  assert(aead_ctx->ProtocolVersion() == protocol_version);
+
+  if (!EVP_AEAD_CTX_init_with_direction(
+          aead_ctx->ctx_.get(), aead, enc_key.data(), enc_key.size(),
+          EVP_AEAD_DEFAULT_TAG_LENGTH, direction)) {
+    return nullptr;
+  }
+
+  assert(EVP_AEAD_nonce_length(aead) <= EVP_AEAD_MAX_NONCE_LENGTH);
+  static_assert(EVP_AEAD_MAX_NONCE_LENGTH < 256,
+                "variable_nonce_len doesn't fit in uint8_t");
+  aead_ctx->variable_nonce_len_ = (uint8_t)EVP_AEAD_nonce_length(aead);
+  if (mac_key.empty()) {
+    assert(fixed_iv.size() <= sizeof(aead_ctx->fixed_nonce_));
+    OPENSSL_memcpy(aead_ctx->fixed_nonce_, fixed_iv.data(), fixed_iv.size());
+    aead_ctx->fixed_nonce_len_ = fixed_iv.size();
+
+    if (cipher->algorithm_enc & SSL_CHACHA20POLY1305) {
+      // The fixed nonce into the actual nonce (the sequence number).
+      aead_ctx->xor_fixed_nonce_ = true;
+      aead_ctx->variable_nonce_len_ = 8;
+    } else {
+      // The fixed IV is prepended to the nonce.
+      assert(fixed_iv.size() <= aead_ctx->variable_nonce_len_);
+      aead_ctx->variable_nonce_len_ -= fixed_iv.size();
+    }
+
+    // AES-GCM uses an explicit nonce.
+    if (cipher->algorithm_enc & (SSL_AES128GCM | SSL_AES256GCM)) {
+      aead_ctx->variable_nonce_included_in_record_ = true;
+    }
+
+    // The TLS 1.3 construction XORs the fixed nonce into the sequence number
+    // and omits the additional data.
+    if (protocol_version >= TLS1_3_VERSION) {
+      aead_ctx->xor_fixed_nonce_ = true;
+      aead_ctx->variable_nonce_len_ = 8;
+      aead_ctx->variable_nonce_included_in_record_ = false;
+      aead_ctx->ad_is_header_ = true;
+      assert(fixed_iv.size() >= aead_ctx->variable_nonce_len_);
+    }
+  } else {
+    assert(protocol_version < TLS1_3_VERSION);
+    aead_ctx->variable_nonce_included_in_record_ = true;
+    aead_ctx->random_variable_nonce_ = true;
+    aead_ctx->omit_length_in_ad_ = true;
+  }
+
+  return aead_ctx;
+}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::CreatePlaceholderForQUIC(
+    uint16_t version, const SSL_CIPHER *cipher) {
+  return MakeUnique<SSLAEADContext>(version, false, cipher);
+}
+
+void SSLAEADContext::SetVersionIfNullCipher(uint16_t version) {
+  if (is_null_cipher()) {
+    version_ = version;
+  }
+}
+
+uint16_t SSLAEADContext::ProtocolVersion() const {
+  uint16_t protocol_version;
+  if(!ssl_protocol_version_from_wire(&protocol_version, version_)) {
+    assert(false);
+    return 0;
+  }
+  return protocol_version;
+}
+
+uint16_t SSLAEADContext::RecordVersion() const {
+  if (version_ == 0) {
+    assert(is_null_cipher());
+    return is_dtls_ ? DTLS1_VERSION : TLS1_VERSION;
+  }
+
+  if (ProtocolVersion() <= TLS1_2_VERSION) {
+    return version_;
+  }
+
+  return TLS1_2_VERSION;
+}
+
+size_t SSLAEADContext::ExplicitNonceLen() const {
+  if (!FUZZER_MODE && variable_nonce_included_in_record_) {
+    return variable_nonce_len_;
+  }
+  return 0;
+}
+
+bool SSLAEADContext::SuffixLen(size_t *out_suffix_len, const size_t in_len,
+                               const size_t extra_in_len) const {
+  if (is_null_cipher() || FUZZER_MODE) {
+    *out_suffix_len = extra_in_len;
+    return true;
+  }
+  return !!EVP_AEAD_CTX_tag_len(ctx_.get(), out_suffix_len, in_len,
+                                extra_in_len);
+}
+
+bool SSLAEADContext::CiphertextLen(size_t *out_len, const size_t in_len,
+                                   const size_t extra_in_len) const {
+  size_t len;
+  if (!SuffixLen(&len, in_len, extra_in_len)) {
+    return false;
+  }
+  len += ExplicitNonceLen();
+  len += in_len;
+  if (len < in_len || len >= 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+size_t SSLAEADContext::MaxOverhead() const {
+  return ExplicitNonceLen() +
+         (is_null_cipher() || FUZZER_MODE
+              ? 0
+              : EVP_AEAD_max_overhead(EVP_AEAD_CTX_aead(ctx_.get())));
+}
+
+Span<const uint8_t> SSLAEADContext::GetAdditionalData(
+    uint8_t storage[13], uint8_t type, uint16_t record_version,
+    const uint8_t seqnum[8], size_t plaintext_len, Span<const uint8_t> header) {
+  if (ad_is_header_) {
+    return header;
+  }
+
+  OPENSSL_memcpy(storage, seqnum, 8);
+  size_t len = 8;
+  storage[len++] = type;
+  storage[len++] = static_cast<uint8_t>((record_version >> 8));
+  storage[len++] = static_cast<uint8_t>(record_version);
+  if (!omit_length_in_ad_) {
+    storage[len++] = static_cast<uint8_t>((plaintext_len >> 8));
+    storage[len++] = static_cast<uint8_t>(plaintext_len);
+  }
+  return MakeConstSpan(storage, len);
+}
+
+bool SSLAEADContext::Open(Span<uint8_t> *out, uint8_t type,
+                          uint16_t record_version, const uint8_t seqnum[8],
+                          Span<const uint8_t> header, Span<uint8_t> in) {
+  if (is_null_cipher() || FUZZER_MODE) {
+    // Handle the initial NULL cipher.
+    *out = in;
+    return true;
+  }
+
+  // TLS 1.2 AEADs include the length in the AD and are assumed to have fixed
+  // overhead. Otherwise the parameter is unused.
+  size_t plaintext_len = 0;
+  if (!omit_length_in_ad_) {
+    size_t overhead = MaxOverhead();
+    if (in.size() < overhead) {
+      // Publicly invalid.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_PACKET_LENGTH);
+      return false;
+    }
+    plaintext_len = in.size() - overhead;
+  }
+
+  uint8_t ad_storage[13];
+  Span<const uint8_t> ad = GetAdditionalData(ad_storage, type, record_version,
+                                             seqnum, plaintext_len, header);
+
+  // Assemble the nonce.
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  size_t nonce_len = 0;
+
+  // Prepend the fixed nonce, or left-pad with zeros if XORing.
+  if (xor_fixed_nonce_) {
+    nonce_len = fixed_nonce_len_ - variable_nonce_len_;
+    OPENSSL_memset(nonce, 0, nonce_len);
+  } else {
+    OPENSSL_memcpy(nonce, fixed_nonce_, fixed_nonce_len_);
+    nonce_len += fixed_nonce_len_;
+  }
+
+  // Add the variable nonce.
+  if (variable_nonce_included_in_record_) {
+    if (in.size() < variable_nonce_len_) {
+      // Publicly invalid.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_PACKET_LENGTH);
+      return false;
+    }
+    OPENSSL_memcpy(nonce + nonce_len, in.data(), variable_nonce_len_);
+    in = in.subspan(variable_nonce_len_);
+  } else {
+    assert(variable_nonce_len_ == 8);
+    OPENSSL_memcpy(nonce + nonce_len, seqnum, variable_nonce_len_);
+  }
+  nonce_len += variable_nonce_len_;
+
+  // XOR the fixed nonce, if necessary.
+  if (xor_fixed_nonce_) {
+    assert(nonce_len == fixed_nonce_len_);
+    for (size_t i = 0; i < fixed_nonce_len_; i++) {
+      nonce[i] ^= fixed_nonce_[i];
+    }
+  }
+
+  // Decrypt in-place.
+  size_t len;
+  if (!EVP_AEAD_CTX_open(ctx_.get(), in.data(), &len, in.size(), nonce,
+                         nonce_len, in.data(), in.size(), ad.data(),
+                         ad.size())) {
+    return false;
+  }
+  *out = in.subspan(0, len);
+  return true;
+}
+
+bool SSLAEADContext::SealScatter(uint8_t *out_prefix, uint8_t *out,
+                                 uint8_t *out_suffix, uint8_t type,
+                                 uint16_t record_version,
+                                 const uint8_t seqnum[8],
+                                 Span<const uint8_t> header, const uint8_t *in,
+                                 size_t in_len, const uint8_t *extra_in,
+                                 size_t extra_in_len) {
+  const size_t prefix_len = ExplicitNonceLen();
+  size_t suffix_len;
+  if (!SuffixLen(&suffix_len, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if ((in != out && buffers_alias(in, in_len, out, in_len)) ||
+      buffers_alias(in, in_len, out_prefix, prefix_len) ||
+      buffers_alias(in, in_len, out_suffix, suffix_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  if (is_null_cipher() || FUZZER_MODE) {
+    // Handle the initial NULL cipher.
+    OPENSSL_memmove(out, in, in_len);
+    OPENSSL_memmove(out_suffix, extra_in, extra_in_len);
+    return true;
+  }
+
+  uint8_t ad_storage[13];
+  Span<const uint8_t> ad = GetAdditionalData(ad_storage, type, record_version,
+                                             seqnum, in_len, header);
+
+  // Assemble the nonce.
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  size_t nonce_len = 0;
+
+  // Prepend the fixed nonce, or left-pad with zeros if XORing.
+  if (xor_fixed_nonce_) {
+    nonce_len = fixed_nonce_len_ - variable_nonce_len_;
+    OPENSSL_memset(nonce, 0, nonce_len);
+  } else {
+    OPENSSL_memcpy(nonce, fixed_nonce_, fixed_nonce_len_);
+    nonce_len += fixed_nonce_len_;
+  }
+
+  // Select the variable nonce.
+  if (random_variable_nonce_) {
+    assert(variable_nonce_included_in_record_);
+    if (!RAND_bytes(nonce + nonce_len, variable_nonce_len_)) {
+      return false;
+    }
+  } else {
+    // When sending we use the sequence number as the variable part of the
+    // nonce.
+    assert(variable_nonce_len_ == 8);
+    OPENSSL_memcpy(nonce + nonce_len, seqnum, variable_nonce_len_);
+  }
+  nonce_len += variable_nonce_len_;
+
+  // Emit the variable nonce if included in the record.
+  if (variable_nonce_included_in_record_) {
+    assert(!xor_fixed_nonce_);
+    if (buffers_alias(in, in_len, out_prefix, variable_nonce_len_)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+      return false;
+    }
+    OPENSSL_memcpy(out_prefix, nonce + fixed_nonce_len_,
+                   variable_nonce_len_);
+  }
+
+  // XOR the fixed nonce, if necessary.
+  if (xor_fixed_nonce_) {
+    assert(nonce_len == fixed_nonce_len_);
+    for (size_t i = 0; i < fixed_nonce_len_; i++) {
+      nonce[i] ^= fixed_nonce_[i];
+    }
+  }
+
+  size_t written_suffix_len;
+  bool result = !!EVP_AEAD_CTX_seal_scatter(
+      ctx_.get(), out, out_suffix, &written_suffix_len, suffix_len, nonce,
+      nonce_len, in, in_len, extra_in, extra_in_len, ad.data(), ad.size());
+  assert(!result || written_suffix_len == suffix_len);
+  return result;
+}
+
+bool SSLAEADContext::Seal(uint8_t *out, size_t *out_len, size_t max_out_len,
+                          uint8_t type, uint16_t record_version,
+                          const uint8_t seqnum[8], Span<const uint8_t> header,
+                          const uint8_t *in, size_t in_len) {
+  const size_t prefix_len = ExplicitNonceLen();
+  size_t suffix_len;
+  if (!SuffixLen(&suffix_len, in_len, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (in_len + prefix_len < in_len ||
+      in_len + prefix_len + suffix_len < in_len + prefix_len) {
+    OPENSSL_PUT_ERROR(CIPHER, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (in_len + prefix_len + suffix_len > max_out_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  if (!SealScatter(out, out + prefix_len, out + prefix_len + in_len, type,
+                   record_version, seqnum, header, in, in_len, 0, 0)) {
+    return false;
+  }
+  *out_len = prefix_len + in_len + suffix_len;
+  return true;
+}
+
+bool SSLAEADContext::GetIV(const uint8_t **out_iv, size_t *out_iv_len) const {
+  return !is_null_cipher() &&
+         EVP_AEAD_CTX_get_iv(ctx_.get(), out_iv, out_iv_len);
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc.grpc_back
new file mode 100644
index 0000000..0bad266
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_aead_ctx.cc.grpc_back	
@@ -0,0 +1,432 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/aead.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+#define FUZZER_MODE true
+#else
+#define FUZZER_MODE false
+#endif
+
+BSSL_NAMESPACE_BEGIN
+
+SSLAEADContext::SSLAEADContext(uint16_t version_arg, bool is_dtls_arg,
+                               const SSL_CIPHER *cipher_arg)
+    : cipher_(cipher_arg),
+      version_(version_arg),
+      is_dtls_(is_dtls_arg),
+      variable_nonce_included_in_record_(false),
+      random_variable_nonce_(false),
+      xor_fixed_nonce_(false),
+      omit_length_in_ad_(false),
+      ad_is_header_(false) {
+  OPENSSL_memset(fixed_nonce_, 0, sizeof(fixed_nonce_));
+}
+
+SSLAEADContext::~SSLAEADContext() {}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::CreateNullCipher(bool is_dtls) {
+  return MakeUnique<SSLAEADContext>(0 /* version */, is_dtls,
+                                    nullptr /* cipher */);
+}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::Create(
+    enum evp_aead_direction_t direction, uint16_t version, bool is_dtls,
+    const SSL_CIPHER *cipher, Span<const uint8_t> enc_key,
+    Span<const uint8_t> mac_key, Span<const uint8_t> fixed_iv) {
+  const EVP_AEAD *aead;
+  uint16_t protocol_version;
+  size_t expected_mac_key_len, expected_fixed_iv_len;
+  if (!ssl_protocol_version_from_wire(&protocol_version, version) ||
+      !ssl_cipher_get_evp_aead(&aead, &expected_mac_key_len,
+                               &expected_fixed_iv_len, cipher, protocol_version,
+                               is_dtls) ||
+      // Ensure the caller returned correct key sizes.
+      expected_fixed_iv_len != fixed_iv.size() ||
+      expected_mac_key_len != mac_key.size()) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return nullptr;
+  }
+
+  uint8_t merged_key[EVP_AEAD_MAX_KEY_LENGTH];
+  if (!mac_key.empty()) {
+    // This is a "stateful" AEAD (for compatibility with pre-AEAD cipher
+    // suites).
+    if (mac_key.size() + enc_key.size() + fixed_iv.size() >
+        sizeof(merged_key)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return nullptr;
+    }
+    OPENSSL_memcpy(merged_key, mac_key.data(), mac_key.size());
+    OPENSSL_memcpy(merged_key + mac_key.size(), enc_key.data(), enc_key.size());
+    OPENSSL_memcpy(merged_key + mac_key.size() + enc_key.size(),
+                   fixed_iv.data(), fixed_iv.size());
+    enc_key = MakeConstSpan(merged_key,
+                            enc_key.size() + mac_key.size() + fixed_iv.size());
+  }
+
+  UniquePtr<SSLAEADContext> aead_ctx =
+      MakeUnique<SSLAEADContext>(version, is_dtls, cipher);
+  if (!aead_ctx) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  assert(aead_ctx->ProtocolVersion() == protocol_version);
+
+  if (!EVP_AEAD_CTX_init_with_direction(
+          aead_ctx->ctx_.get(), aead, enc_key.data(), enc_key.size(),
+          EVP_AEAD_DEFAULT_TAG_LENGTH, direction)) {
+    return nullptr;
+  }
+
+  assert(EVP_AEAD_nonce_length(aead) <= EVP_AEAD_MAX_NONCE_LENGTH);
+  static_assert(EVP_AEAD_MAX_NONCE_LENGTH < 256,
+                "variable_nonce_len doesn't fit in uint8_t");
+  aead_ctx->variable_nonce_len_ = (uint8_t)EVP_AEAD_nonce_length(aead);
+  if (mac_key.empty()) {
+    assert(fixed_iv.size() <= sizeof(aead_ctx->fixed_nonce_));
+    OPENSSL_memcpy(aead_ctx->fixed_nonce_, fixed_iv.data(), fixed_iv.size());
+    aead_ctx->fixed_nonce_len_ = fixed_iv.size();
+
+    if (cipher->algorithm_enc & SSL_CHACHA20POLY1305) {
+      // The fixed nonce into the actual nonce (the sequence number).
+      aead_ctx->xor_fixed_nonce_ = true;
+      aead_ctx->variable_nonce_len_ = 8;
+    } else {
+      // The fixed IV is prepended to the nonce.
+      assert(fixed_iv.size() <= aead_ctx->variable_nonce_len_);
+      aead_ctx->variable_nonce_len_ -= fixed_iv.size();
+    }
+
+    // AES-GCM uses an explicit nonce.
+    if (cipher->algorithm_enc & (SSL_AES128GCM | SSL_AES256GCM)) {
+      aead_ctx->variable_nonce_included_in_record_ = true;
+    }
+
+    // The TLS 1.3 construction XORs the fixed nonce into the sequence number
+    // and omits the additional data.
+    if (protocol_version >= TLS1_3_VERSION) {
+      aead_ctx->xor_fixed_nonce_ = true;
+      aead_ctx->variable_nonce_len_ = 8;
+      aead_ctx->variable_nonce_included_in_record_ = false;
+      aead_ctx->ad_is_header_ = true;
+      assert(fixed_iv.size() >= aead_ctx->variable_nonce_len_);
+    }
+  } else {
+    assert(protocol_version < TLS1_3_VERSION);
+    aead_ctx->variable_nonce_included_in_record_ = true;
+    aead_ctx->random_variable_nonce_ = true;
+    aead_ctx->omit_length_in_ad_ = true;
+  }
+
+  return aead_ctx;
+}
+
+UniquePtr<SSLAEADContext> SSLAEADContext::CreatePlaceholderForQUIC(
+    uint16_t version, const SSL_CIPHER *cipher) {
+  return MakeUnique<SSLAEADContext>(version, false, cipher);
+}
+
+void SSLAEADContext::SetVersionIfNullCipher(uint16_t version) {
+  if (is_null_cipher()) {
+    version_ = version;
+  }
+}
+
+uint16_t SSLAEADContext::ProtocolVersion() const {
+  uint16_t protocol_version;
+  if(!ssl_protocol_version_from_wire(&protocol_version, version_)) {
+    assert(false);
+    return 0;
+  }
+  return protocol_version;
+}
+
+uint16_t SSLAEADContext::RecordVersion() const {
+  if (version_ == 0) {
+    assert(is_null_cipher());
+    return is_dtls_ ? DTLS1_VERSION : TLS1_VERSION;
+  }
+
+  if (ProtocolVersion() <= TLS1_2_VERSION) {
+    return version_;
+  }
+
+  return TLS1_2_VERSION;
+}
+
+size_t SSLAEADContext::ExplicitNonceLen() const {
+  if (!FUZZER_MODE && variable_nonce_included_in_record_) {
+    return variable_nonce_len_;
+  }
+  return 0;
+}
+
+bool SSLAEADContext::SuffixLen(size_t *out_suffix_len, const size_t in_len,
+                               const size_t extra_in_len) const {
+  if (is_null_cipher() || FUZZER_MODE) {
+    *out_suffix_len = extra_in_len;
+    return true;
+  }
+  return !!EVP_AEAD_CTX_tag_len(ctx_.get(), out_suffix_len, in_len,
+                                extra_in_len);
+}
+
+bool SSLAEADContext::CiphertextLen(size_t *out_len, const size_t in_len,
+                                   const size_t extra_in_len) const {
+  size_t len;
+  if (!SuffixLen(&len, in_len, extra_in_len)) {
+    return false;
+  }
+  len += ExplicitNonceLen();
+  len += in_len;
+  if (len < in_len || len >= 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+size_t SSLAEADContext::MaxOverhead() const {
+  return ExplicitNonceLen() +
+         (is_null_cipher() || FUZZER_MODE
+              ? 0
+              : EVP_AEAD_max_overhead(EVP_AEAD_CTX_aead(ctx_.get())));
+}
+
+Span<const uint8_t> SSLAEADContext::GetAdditionalData(
+    uint8_t storage[13], uint8_t type, uint16_t record_version,
+    const uint8_t seqnum[8], size_t plaintext_len, Span<const uint8_t> header) {
+  if (ad_is_header_) {
+    return header;
+  }
+
+  OPENSSL_memcpy(storage, seqnum, 8);
+  size_t len = 8;
+  storage[len++] = type;
+  storage[len++] = static_cast<uint8_t>((record_version >> 8));
+  storage[len++] = static_cast<uint8_t>(record_version);
+  if (!omit_length_in_ad_) {
+    storage[len++] = static_cast<uint8_t>((plaintext_len >> 8));
+    storage[len++] = static_cast<uint8_t>(plaintext_len);
+  }
+  return MakeConstSpan(storage, len);
+}
+
+bool SSLAEADContext::Open(Span<uint8_t> *out, uint8_t type,
+                          uint16_t record_version, const uint8_t seqnum[8],
+                          Span<const uint8_t> header, Span<uint8_t> in) {
+  if (is_null_cipher() || FUZZER_MODE) {
+    // Handle the initial NULL cipher.
+    *out = in;
+    return true;
+  }
+
+  // TLS 1.2 AEADs include the length in the AD and are assumed to have fixed
+  // overhead. Otherwise the parameter is unused.
+  size_t plaintext_len = 0;
+  if (!omit_length_in_ad_) {
+    size_t overhead = MaxOverhead();
+    if (in.size() < overhead) {
+      // Publicly invalid.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_PACKET_LENGTH);
+      return false;
+    }
+    plaintext_len = in.size() - overhead;
+  }
+
+  uint8_t ad_storage[13];
+  Span<const uint8_t> ad = GetAdditionalData(ad_storage, type, record_version,
+                                             seqnum, plaintext_len, header);
+
+  // Assemble the nonce.
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  size_t nonce_len = 0;
+
+  // Prepend the fixed nonce, or left-pad with zeros if XORing.
+  if (xor_fixed_nonce_) {
+    nonce_len = fixed_nonce_len_ - variable_nonce_len_;
+    OPENSSL_memset(nonce, 0, nonce_len);
+  } else {
+    OPENSSL_memcpy(nonce, fixed_nonce_, fixed_nonce_len_);
+    nonce_len += fixed_nonce_len_;
+  }
+
+  // Add the variable nonce.
+  if (variable_nonce_included_in_record_) {
+    if (in.size() < variable_nonce_len_) {
+      // Publicly invalid.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_PACKET_LENGTH);
+      return false;
+    }
+    OPENSSL_memcpy(nonce + nonce_len, in.data(), variable_nonce_len_);
+    in = in.subspan(variable_nonce_len_);
+  } else {
+    assert(variable_nonce_len_ == 8);
+    OPENSSL_memcpy(nonce + nonce_len, seqnum, variable_nonce_len_);
+  }
+  nonce_len += variable_nonce_len_;
+
+  // XOR the fixed nonce, if necessary.
+  if (xor_fixed_nonce_) {
+    assert(nonce_len == fixed_nonce_len_);
+    for (size_t i = 0; i < fixed_nonce_len_; i++) {
+      nonce[i] ^= fixed_nonce_[i];
+    }
+  }
+
+  // Decrypt in-place.
+  size_t len;
+  if (!EVP_AEAD_CTX_open(ctx_.get(), in.data(), &len, in.size(), nonce,
+                         nonce_len, in.data(), in.size(), ad.data(),
+                         ad.size())) {
+    return false;
+  }
+  *out = in.subspan(0, len);
+  return true;
+}
+
+bool SSLAEADContext::SealScatter(uint8_t *out_prefix, uint8_t *out,
+                                 uint8_t *out_suffix, uint8_t type,
+                                 uint16_t record_version,
+                                 const uint8_t seqnum[8],
+                                 Span<const uint8_t> header, const uint8_t *in,
+                                 size_t in_len, const uint8_t *extra_in,
+                                 size_t extra_in_len) {
+  const size_t prefix_len = ExplicitNonceLen();
+  size_t suffix_len;
+  if (!SuffixLen(&suffix_len, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if ((in != out && buffers_alias(in, in_len, out, in_len)) ||
+      buffers_alias(in, in_len, out_prefix, prefix_len) ||
+      buffers_alias(in, in_len, out_suffix, suffix_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  if (is_null_cipher() || FUZZER_MODE) {
+    // Handle the initial NULL cipher.
+    OPENSSL_memmove(out, in, in_len);
+    OPENSSL_memmove(out_suffix, extra_in, extra_in_len);
+    return true;
+  }
+
+  uint8_t ad_storage[13];
+  Span<const uint8_t> ad = GetAdditionalData(ad_storage, type, record_version,
+                                             seqnum, in_len, header);
+
+  // Assemble the nonce.
+  uint8_t nonce[EVP_AEAD_MAX_NONCE_LENGTH];
+  size_t nonce_len = 0;
+
+  // Prepend the fixed nonce, or left-pad with zeros if XORing.
+  if (xor_fixed_nonce_) {
+    nonce_len = fixed_nonce_len_ - variable_nonce_len_;
+    OPENSSL_memset(nonce, 0, nonce_len);
+  } else {
+    OPENSSL_memcpy(nonce, fixed_nonce_, fixed_nonce_len_);
+    nonce_len += fixed_nonce_len_;
+  }
+
+  // Select the variable nonce.
+  if (random_variable_nonce_) {
+    assert(variable_nonce_included_in_record_);
+    if (!RAND_bytes(nonce + nonce_len, variable_nonce_len_)) {
+      return false;
+    }
+  } else {
+    // When sending we use the sequence number as the variable part of the
+    // nonce.
+    assert(variable_nonce_len_ == 8);
+    OPENSSL_memcpy(nonce + nonce_len, seqnum, variable_nonce_len_);
+  }
+  nonce_len += variable_nonce_len_;
+
+  // Emit the variable nonce if included in the record.
+  if (variable_nonce_included_in_record_) {
+    assert(!xor_fixed_nonce_);
+    if (buffers_alias(in, in_len, out_prefix, variable_nonce_len_)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+      return false;
+    }
+    OPENSSL_memcpy(out_prefix, nonce + fixed_nonce_len_,
+                   variable_nonce_len_);
+  }
+
+  // XOR the fixed nonce, if necessary.
+  if (xor_fixed_nonce_) {
+    assert(nonce_len == fixed_nonce_len_);
+    for (size_t i = 0; i < fixed_nonce_len_; i++) {
+      nonce[i] ^= fixed_nonce_[i];
+    }
+  }
+
+  size_t written_suffix_len;
+  bool result = !!EVP_AEAD_CTX_seal_scatter(
+      ctx_.get(), out, out_suffix, &written_suffix_len, suffix_len, nonce,
+      nonce_len, in, in_len, extra_in, extra_in_len, ad.data(), ad.size());
+  assert(!result || written_suffix_len == suffix_len);
+  return result;
+}
+
+bool SSLAEADContext::Seal(uint8_t *out, size_t *out_len, size_t max_out_len,
+                          uint8_t type, uint16_t record_version,
+                          const uint8_t seqnum[8], Span<const uint8_t> header,
+                          const uint8_t *in, size_t in_len) {
+  const size_t prefix_len = ExplicitNonceLen();
+  size_t suffix_len;
+  if (!SuffixLen(&suffix_len, in_len, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (in_len + prefix_len < in_len ||
+      in_len + prefix_len + suffix_len < in_len + prefix_len) {
+    OPENSSL_PUT_ERROR(CIPHER, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (in_len + prefix_len + suffix_len > max_out_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  if (!SealScatter(out, out + prefix_len, out + prefix_len + in_len, type,
+                   record_version, seqnum, header, in, in_len, 0, 0)) {
+    return false;
+  }
+  *out_len = prefix_len + in_len + suffix_len;
+  return true;
+}
+
+bool SSLAEADContext::GetIV(const uint8_t **out_iv, size_t *out_iv_len) const {
+  return !is_null_cipher() &&
+         EVP_AEAD_CTX_get_iv(ctx_.get(), out_iv, out_iv_len);
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc
new file mode 100644
index 0000000..3aa124f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc	
@@ -0,0 +1,827 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// An SSL_SESSION is serialized as the following ASN.1 structure:
+//
+// SSLSession ::= SEQUENCE {
+//     version                     INTEGER (1),  -- session structure version
+//     sslVersion                  INTEGER,      -- protocol version number
+//     cipher                      OCTET STRING, -- two bytes long
+//     sessionID                   OCTET STRING,
+//     masterKey                   OCTET STRING,
+//     time                    [1] INTEGER, -- seconds since UNIX epoch
+//     timeout                 [2] INTEGER, -- in seconds
+//     peer                    [3] Certificate OPTIONAL,
+//     sessionIDContext        [4] OCTET STRING OPTIONAL,
+//     verifyResult            [5] INTEGER OPTIONAL,  -- one of X509_V_* codes
+//     pskIdentity             [8] OCTET STRING OPTIONAL,
+//     ticketLifetimeHint      [9] INTEGER OPTIONAL,       -- client-only
+//     ticket                  [10] OCTET STRING OPTIONAL, -- client-only
+//     peerSHA256              [13] OCTET STRING OPTIONAL,
+//     originalHandshakeHash   [14] OCTET STRING OPTIONAL,
+//     signedCertTimestampList [15] OCTET STRING OPTIONAL,
+//                                  -- contents of SCT extension
+//     ocspResponse            [16] OCTET STRING OPTIONAL,
+//                                  -- stapled OCSP response from the server
+//     extendedMasterSecret    [17] BOOLEAN OPTIONAL,
+//     groupID                 [18] INTEGER OPTIONAL,
+//     certChain               [19] SEQUENCE OF Certificate OPTIONAL,
+//     ticketAgeAdd            [21] OCTET STRING OPTIONAL,
+//     isServer                [22] BOOLEAN DEFAULT TRUE,
+//     peerSignatureAlgorithm  [23] INTEGER OPTIONAL,
+//     ticketMaxEarlyData      [24] INTEGER OPTIONAL,
+//     authTimeout             [25] INTEGER OPTIONAL, -- defaults to timeout
+//     earlyALPN               [26] OCTET STRING OPTIONAL,
+// }
+//
+// Note: historically this serialization has included other optional
+// fields. Their presence is currently treated as a parse error, except for
+// hostName, which is ignored.
+//
+//     keyArg                  [0] IMPLICIT OCTET STRING OPTIONAL,
+//     hostName                [6] OCTET STRING OPTIONAL,
+//     pskIdentityHint         [7] OCTET STRING OPTIONAL,
+//     compressionMethod       [11] OCTET STRING OPTIONAL,
+//     srpUsername             [12] OCTET STRING OPTIONAL,
+//     ticketFlags             [20] INTEGER OPTIONAL,
+
+static const unsigned kVersion = 1;
+
+static const unsigned kTimeTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
+static const unsigned kTimeoutTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2;
+static const unsigned kPeerTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3;
+static const unsigned kSessionIDContextTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 4;
+static const unsigned kVerifyResultTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 5;
+static const unsigned kHostNameTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 6;
+static const unsigned kPSKIdentityTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 8;
+static const unsigned kTicketLifetimeHintTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 9;
+static const unsigned kTicketTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 10;
+static const unsigned kPeerSHA256Tag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 13;
+static const unsigned kOriginalHandshakeHashTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 14;
+static const unsigned kSignedCertTimestampListTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 15;
+static const unsigned kOCSPResponseTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 16;
+static const unsigned kExtendedMasterSecretTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 17;
+static const unsigned kGroupIDTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 18;
+static const unsigned kCertChainTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 19;
+static const unsigned kTicketAgeAddTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 21;
+static const unsigned kIsServerTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 22;
+static const unsigned kPeerSignatureAlgorithmTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 23;
+static const unsigned kTicketMaxEarlyDataTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 24;
+static const unsigned kAuthTimeoutTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 25;
+static const unsigned kEarlyALPNTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 26;
+
+static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, CBB *cbb,
+                                     int for_ticket) {
+  if (in == NULL || in->cipher == NULL) {
+    return 0;
+  }
+
+  CBB session, child, child2;
+  if (!CBB_add_asn1(cbb, &session, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&session, kVersion) ||
+      !CBB_add_asn1_uint64(&session, in->ssl_version) ||
+      !CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
+      // The session ID is irrelevant for a session ticket.
+      !CBB_add_asn1_octet_string(&session, in->session_id,
+                                 for_ticket ? 0 : in->session_id_length) ||
+      !CBB_add_asn1_octet_string(&session, in->master_key,
+                                 in->master_key_length) ||
+      !CBB_add_asn1(&session, &child, kTimeTag) ||
+      !CBB_add_asn1_uint64(&child, in->time) ||
+      !CBB_add_asn1(&session, &child, kTimeoutTag) ||
+      !CBB_add_asn1_uint64(&child, in->timeout)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The peer certificate is only serialized if the SHA-256 isn't
+  // serialized instead.
+  if (sk_CRYPTO_BUFFER_num(in->certs.get()) > 0 && !in->peer_sha256_valid) {
+    const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), 0);
+    if (!CBB_add_asn1(&session, &child, kPeerTag) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                       CRYPTO_BUFFER_len(buffer))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  // Although it is OPTIONAL and usually empty, OpenSSL has
+  // historically always encoded the sid_ctx.
+  if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
+      !CBB_add_asn1_octet_string(&child, in->sid_ctx, in->sid_ctx_length)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->verify_result != X509_V_OK) {
+    if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
+        !CBB_add_asn1_uint64(&child, in->verify_result)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->psk_identity) {
+    if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
+        !CBB_add_asn1_octet_string(&child,
+                                   (const uint8_t *)in->psk_identity.get(),
+                                   strlen(in->psk_identity.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->ticket_lifetime_hint > 0) {
+    if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
+        !CBB_add_asn1_uint64(&child, in->ticket_lifetime_hint)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (!in->ticket.empty() && !for_ticket) {
+    if (!CBB_add_asn1(&session, &child, kTicketTag) ||
+        !CBB_add_asn1_octet_string(&child, in->ticket.data(),
+                                   in->ticket.size())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->peer_sha256_valid) {
+    if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
+        !CBB_add_asn1_octet_string(&child, in->peer_sha256,
+                                   sizeof(in->peer_sha256))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->original_handshake_hash_len > 0) {
+    if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
+        !CBB_add_asn1_octet_string(&child, in->original_handshake_hash,
+                                   in->original_handshake_hash_len)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->signed_cert_timestamp_list != nullptr) {
+    if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
+        !CBB_add_asn1_octet_string(
+            &child, CRYPTO_BUFFER_data(in->signed_cert_timestamp_list.get()),
+            CRYPTO_BUFFER_len(in->signed_cert_timestamp_list.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->ocsp_response != nullptr) {
+    if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
+        !CBB_add_asn1_octet_string(
+            &child, CRYPTO_BUFFER_data(in->ocsp_response.get()),
+            CRYPTO_BUFFER_len(in->ocsp_response.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->extended_master_secret) {
+    if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
+        !CBB_add_asn1_bool(&child, true)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->group_id > 0 &&
+      (!CBB_add_asn1(&session, &child, kGroupIDTag) ||
+       !CBB_add_asn1_uint64(&child, in->group_id))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The certificate chain is only serialized if the leaf's SHA-256 isn't
+  // serialized instead.
+  if (in->certs != NULL &&
+      !in->peer_sha256_valid &&
+      sk_CRYPTO_BUFFER_num(in->certs.get()) >= 2) {
+    if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs.get()); i++) {
+      const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), i);
+      if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                         CRYPTO_BUFFER_len(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    }
+  }
+
+  if (in->ticket_age_add_valid) {
+    if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
+        !CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_u32(&child2, in->ticket_age_add)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (!in->is_server) {
+    if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
+        !CBB_add_asn1_bool(&child, false)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->peer_signature_algorithm != 0 &&
+      (!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
+       !CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->ticket_max_early_data != 0 &&
+      (!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
+       !CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->timeout != in->auth_timeout &&
+      (!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
+       !CBB_add_asn1_uint64(&child, in->auth_timeout))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!in->early_alpn.empty()) {
+    if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
+        !CBB_add_asn1_octet_string(&child, in->early_alpn.data(),
+                                   in->early_alpn.size())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+// SSL_SESSION_parse_string gets an optional ASN.1 OCTET STRING explicitly
+// tagged with |tag| from |cbs| and saves it in |*out|. If the element was not
+// found, it sets |*out| to NULL. It returns one on success, whether or not the
+// element was found, and zero on decode error.
+static int SSL_SESSION_parse_string(CBS *cbs, UniquePtr<char> *out, unsigned tag) {
+  CBS value;
+  int present;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, &present, tag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  if (present) {
+    if (CBS_contains_zero_byte(&value)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+      return 0;
+    }
+    char *raw = nullptr;
+    if (!CBS_strdup(&value, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    out->reset(raw);
+  } else {
+    out->reset();
+  }
+  return 1;
+}
+
+// SSL_SESSION_parse_octet_string gets an optional ASN.1 OCTET STRING explicitly
+// tagged with |tag| from |cbs| and stows it in |*out|. It returns one on
+// success, whether or not the element was found, and zero on decode error.
+static bool SSL_SESSION_parse_octet_string(CBS *cbs, Array<uint8_t> *out,
+                                           unsigned tag) {
+  CBS value;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return false;
+  }
+  return out->CopyFrom(value);
+}
+
+static int SSL_SESSION_parse_crypto_buffer(CBS *cbs,
+                                           UniquePtr<CRYPTO_BUFFER> *out,
+                                           unsigned tag,
+                                           CRYPTO_BUFFER_POOL *pool) {
+  if (!CBS_peek_asn1_tag(cbs, tag)) {
+    return 1;
+  }
+
+  CBS child, value;
+  if (!CBS_get_asn1(cbs, &child, tag) ||
+      !CBS_get_asn1(&child, &value, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  out->reset(CRYPTO_BUFFER_new_from_CBS(&value, pool));
+  if (*out == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  return 1;
+}
+
+// SSL_SESSION_parse_bounded_octet_string parses an optional ASN.1 OCTET STRING
+// explicitly tagged with |tag| of size at most |max_out|.
+static int SSL_SESSION_parse_bounded_octet_string(
+    CBS *cbs, uint8_t *out, uint8_t *out_len, uint8_t max_out, unsigned tag) {
+  CBS value;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag) ||
+      CBS_len(&value) > max_out) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  OPENSSL_memcpy(out, CBS_data(&value), CBS_len(&value));
+  *out_len = (uint8_t)CBS_len(&value);
+  return 1;
+}
+
+static int SSL_SESSION_parse_long(CBS *cbs, long *out, unsigned tag,
+                                  long default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (long)value;
+  return 1;
+}
+
+static int SSL_SESSION_parse_u32(CBS *cbs, uint32_t *out, unsigned tag,
+                                 uint32_t default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > 0xffffffff) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (uint32_t)value;
+  return 1;
+}
+
+static int SSL_SESSION_parse_u16(CBS *cbs, uint16_t *out, unsigned tag,
+                                 uint16_t default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (uint16_t)value;
+  return 1;
+}
+
+UniquePtr<SSL_SESSION> SSL_SESSION_parse(CBS *cbs,
+                                         const SSL_X509_METHOD *x509_method,
+                                         CRYPTO_BUFFER_POOL *pool) {
+  UniquePtr<SSL_SESSION> ret = ssl_session_new(x509_method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  CBS session;
+  uint64_t version, ssl_version;
+  uint16_t unused;
+  if (!CBS_get_asn1(cbs, &session, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&session, &version) ||
+      version != kVersion ||
+      !CBS_get_asn1_uint64(&session, &ssl_version) ||
+      // Require sessions have versions valid in either TLS or DTLS. The session
+      // will not be used by the handshake if not applicable, but, for
+      // simplicity, never parse a session that does not pass
+      // |ssl_protocol_version_from_wire|.
+      ssl_version > UINT16_MAX ||
+      !ssl_protocol_version_from_wire(&unused, ssl_version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->ssl_version = ssl_version;
+
+  CBS cipher;
+  uint16_t cipher_value;
+  if (!CBS_get_asn1(&session, &cipher, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_u16(&cipher, &cipher_value) ||
+      CBS_len(&cipher) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->cipher = SSL_get_cipher_by_value(cipher_value);
+  if (ret->cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_CIPHER);
+    return nullptr;
+  }
+
+  CBS session_id, master_key;
+  if (!CBS_get_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&session_id) > SSL3_MAX_SSL_SESSION_ID_LENGTH ||
+      !CBS_get_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&master_key) > SSL_MAX_MASTER_KEY_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  OPENSSL_memcpy(ret->session_id, CBS_data(&session_id), CBS_len(&session_id));
+  ret->session_id_length = CBS_len(&session_id);
+  OPENSSL_memcpy(ret->master_key, CBS_data(&master_key), CBS_len(&master_key));
+  ret->master_key_length = CBS_len(&master_key);
+
+  CBS child;
+  uint64_t timeout;
+  if (!CBS_get_asn1(&session, &child, kTimeTag) ||
+      !CBS_get_asn1_uint64(&child, &ret->time) ||
+      !CBS_get_asn1(&session, &child, kTimeoutTag) ||
+      !CBS_get_asn1_uint64(&child, &timeout) ||
+      timeout > UINT32_MAX) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  ret->timeout = (uint32_t)timeout;
+
+  CBS peer;
+  int has_peer;
+  if (!CBS_get_optional_asn1(&session, &peer, &has_peer, kPeerTag) ||
+      (has_peer && CBS_len(&peer) == 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  // |peer| is processed with the certificate chain.
+
+  if (!SSL_SESSION_parse_bounded_octet_string(
+          &session, ret->sid_ctx, &ret->sid_ctx_length, sizeof(ret->sid_ctx),
+          kSessionIDContextTag) ||
+      !SSL_SESSION_parse_long(&session, &ret->verify_result, kVerifyResultTag,
+                              X509_V_OK)) {
+    return nullptr;
+  }
+
+  // Skip the historical hostName field.
+  CBS unused_hostname;
+  if (!CBS_get_optional_asn1(&session, &unused_hostname, nullptr,
+                             kHostNameTag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  if (!SSL_SESSION_parse_string(&session, &ret->psk_identity,
+                                kPSKIdentityTag) ||
+      !SSL_SESSION_parse_u32(&session, &ret->ticket_lifetime_hint,
+                             kTicketLifetimeHintTag, 0) ||
+      !SSL_SESSION_parse_octet_string(&session, &ret->ticket, kTicketTag)) {
+    return nullptr;
+  }
+
+  if (CBS_peek_asn1_tag(&session, kPeerSHA256Tag)) {
+    CBS peer_sha256;
+    if (!CBS_get_asn1(&session, &child, kPeerSHA256Tag) ||
+        !CBS_get_asn1(&child, &peer_sha256, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&peer_sha256) != sizeof(ret->peer_sha256) ||
+        CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+      return nullptr;
+    }
+    OPENSSL_memcpy(ret->peer_sha256, CBS_data(&peer_sha256),
+                   sizeof(ret->peer_sha256));
+    ret->peer_sha256_valid = 1;
+  } else {
+    ret->peer_sha256_valid = 0;
+  }
+
+  if (!SSL_SESSION_parse_bounded_octet_string(
+          &session, ret->original_handshake_hash,
+          &ret->original_handshake_hash_len,
+          sizeof(ret->original_handshake_hash), kOriginalHandshakeHashTag) ||
+      !SSL_SESSION_parse_crypto_buffer(&session,
+                                       &ret->signed_cert_timestamp_list,
+                                       kSignedCertTimestampListTag, pool) ||
+      !SSL_SESSION_parse_crypto_buffer(&session, &ret->ocsp_response,
+                                       kOCSPResponseTag, pool)) {
+    return nullptr;
+  }
+
+  int extended_master_secret;
+  if (!CBS_get_optional_asn1_bool(&session, &extended_master_secret,
+                                  kExtendedMasterSecretTag,
+                                  0 /* default to false */)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->extended_master_secret = !!extended_master_secret;
+
+  if (!SSL_SESSION_parse_u16(&session, &ret->group_id, kGroupIDTag, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  CBS cert_chain;
+  CBS_init(&cert_chain, NULL, 0);
+  int has_cert_chain;
+  if (!CBS_get_optional_asn1(&session, &cert_chain, &has_cert_chain,
+                             kCertChainTag) ||
+      (has_cert_chain && CBS_len(&cert_chain) == 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  if (has_cert_chain && !has_peer) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  if (has_peer || has_cert_chain) {
+    ret->certs.reset(sk_CRYPTO_BUFFER_new_null());
+    if (ret->certs == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+
+    if (has_peer) {
+      UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&peer, pool));
+      if (!buffer ||
+          !PushToStack(ret->certs.get(), std::move(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return nullptr;
+      }
+    }
+
+    while (CBS_len(&cert_chain) > 0) {
+      CBS cert;
+      if (!CBS_get_any_asn1_element(&cert_chain, &cert, NULL, NULL) ||
+          CBS_len(&cert) == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+        return nullptr;
+      }
+
+      UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&cert, pool));
+      if (buffer == nullptr ||
+          !PushToStack(ret->certs.get(), std::move(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return nullptr;
+      }
+    }
+  }
+
+  CBS age_add;
+  int age_add_present;
+  if (!CBS_get_optional_asn1_octet_string(&session, &age_add, &age_add_present,
+                                          kTicketAgeAddTag) ||
+      (age_add_present &&
+       !CBS_get_u32(&age_add, &ret->ticket_age_add)) ||
+      CBS_len(&age_add) != 0) {
+    return nullptr;
+  }
+  ret->ticket_age_add_valid = age_add_present != 0;
+
+  int is_server;
+  if (!CBS_get_optional_asn1_bool(&session, &is_server, kIsServerTag,
+                                  1 /* default to true */)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  /* TODO: in time we can include |is_server| for servers too, then we can
+     enforce that client and server sessions are never mixed up. */
+
+  ret->is_server = is_server;
+
+  if (!SSL_SESSION_parse_u16(&session, &ret->peer_signature_algorithm,
+                             kPeerSignatureAlgorithmTag, 0) ||
+      !SSL_SESSION_parse_u32(&session, &ret->ticket_max_early_data,
+                             kTicketMaxEarlyDataTag, 0) ||
+      !SSL_SESSION_parse_u32(&session, &ret->auth_timeout, kAuthTimeoutTag,
+                             ret->timeout) ||
+      !SSL_SESSION_parse_octet_string(&session, &ret->early_alpn,
+                                      kEarlyALPNTag) ||
+      CBS_len(&session) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  if (!x509_method->session_cache_objects(ret.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  return ret;
+}
+
+int ssl_session_serialize(const SSL_SESSION *in, CBB *cbb) {
+  return SSL_SESSION_to_bytes_full(in, cbb, 0);
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_SESSION_to_bytes(const SSL_SESSION *in, uint8_t **out_data,
+                         size_t *out_len) {
+  if (in->not_resumable) {
+    // If the caller has an unresumable session, e.g. if |SSL_get_session| were
+    // called on a TLS 1.3 or False Started connection, serialize with a
+    // placeholder value so it is not accidentally deserialized into a resumable
+    // one.
+    static const char kNotResumableSession[] = "NOT RESUMABLE";
+
+    *out_len = strlen(kNotResumableSession);
+    *out_data = (uint8_t *)OPENSSL_memdup(kNotResumableSession, *out_len);
+    if (*out_data == NULL) {
+      return 0;
+    }
+
+    return 1;
+  }
+
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 256) ||
+      !SSL_SESSION_to_bytes_full(in, cbb.get(), 0) ||
+      !CBB_finish(cbb.get(), out_data, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in, uint8_t **out_data,
+                                    size_t *out_len) {
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 256) ||
+      !SSL_SESSION_to_bytes_full(in, cbb.get(), 1) ||
+      !CBB_finish(cbb.get(), out_data, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp) {
+  uint8_t *out;
+  size_t len;
+
+  if (!SSL_SESSION_to_bytes(in, &out, &len)) {
+    return -1;
+  }
+
+  if (len > INT_MAX) {
+    OPENSSL_free(out);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (pp) {
+    OPENSSL_memcpy(*pp, out, len);
+    *pp += len;
+  }
+  OPENSSL_free(out);
+
+  return len;
+}
+
+SSL_SESSION *SSL_SESSION_from_bytes(const uint8_t *in, size_t in_len,
+                                    const SSL_CTX *ctx) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  UniquePtr<SSL_SESSION> ret =
+      SSL_SESSION_parse(&cbs, ctx->x509_method, ctx->pool);
+  if (!ret) {
+    return NULL;
+  }
+  if (CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return NULL;
+  }
+  return ret.release();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc.grpc_back
new file mode 100644
index 0000000..ea02cf4
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_asn1.cc.grpc_back	
@@ -0,0 +1,827 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// An SSL_SESSION is serialized as the following ASN.1 structure:
+//
+// SSLSession ::= SEQUENCE {
+//     version                     INTEGER (1),  -- session structure version
+//     sslVersion                  INTEGER,      -- protocol version number
+//     cipher                      OCTET STRING, -- two bytes long
+//     sessionID                   OCTET STRING,
+//     masterKey                   OCTET STRING,
+//     time                    [1] INTEGER, -- seconds since UNIX epoch
+//     timeout                 [2] INTEGER, -- in seconds
+//     peer                    [3] Certificate OPTIONAL,
+//     sessionIDContext        [4] OCTET STRING OPTIONAL,
+//     verifyResult            [5] INTEGER OPTIONAL,  -- one of X509_V_* codes
+//     pskIdentity             [8] OCTET STRING OPTIONAL,
+//     ticketLifetimeHint      [9] INTEGER OPTIONAL,       -- client-only
+//     ticket                  [10] OCTET STRING OPTIONAL, -- client-only
+//     peerSHA256              [13] OCTET STRING OPTIONAL,
+//     originalHandshakeHash   [14] OCTET STRING OPTIONAL,
+//     signedCertTimestampList [15] OCTET STRING OPTIONAL,
+//                                  -- contents of SCT extension
+//     ocspResponse            [16] OCTET STRING OPTIONAL,
+//                                  -- stapled OCSP response from the server
+//     extendedMasterSecret    [17] BOOLEAN OPTIONAL,
+//     groupID                 [18] INTEGER OPTIONAL,
+//     certChain               [19] SEQUENCE OF Certificate OPTIONAL,
+//     ticketAgeAdd            [21] OCTET STRING OPTIONAL,
+//     isServer                [22] BOOLEAN DEFAULT TRUE,
+//     peerSignatureAlgorithm  [23] INTEGER OPTIONAL,
+//     ticketMaxEarlyData      [24] INTEGER OPTIONAL,
+//     authTimeout             [25] INTEGER OPTIONAL, -- defaults to timeout
+//     earlyALPN               [26] OCTET STRING OPTIONAL,
+// }
+//
+// Note: historically this serialization has included other optional
+// fields. Their presence is currently treated as a parse error, except for
+// hostName, which is ignored.
+//
+//     keyArg                  [0] IMPLICIT OCTET STRING OPTIONAL,
+//     hostName                [6] OCTET STRING OPTIONAL,
+//     pskIdentityHint         [7] OCTET STRING OPTIONAL,
+//     compressionMethod       [11] OCTET STRING OPTIONAL,
+//     srpUsername             [12] OCTET STRING OPTIONAL,
+//     ticketFlags             [20] INTEGER OPTIONAL,
+
+static const unsigned kVersion = 1;
+
+static const unsigned kTimeTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1;
+static const unsigned kTimeoutTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2;
+static const unsigned kPeerTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3;
+static const unsigned kSessionIDContextTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 4;
+static const unsigned kVerifyResultTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 5;
+static const unsigned kHostNameTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 6;
+static const unsigned kPSKIdentityTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 8;
+static const unsigned kTicketLifetimeHintTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 9;
+static const unsigned kTicketTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 10;
+static const unsigned kPeerSHA256Tag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 13;
+static const unsigned kOriginalHandshakeHashTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 14;
+static const unsigned kSignedCertTimestampListTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 15;
+static const unsigned kOCSPResponseTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 16;
+static const unsigned kExtendedMasterSecretTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 17;
+static const unsigned kGroupIDTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 18;
+static const unsigned kCertChainTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 19;
+static const unsigned kTicketAgeAddTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 21;
+static const unsigned kIsServerTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 22;
+static const unsigned kPeerSignatureAlgorithmTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 23;
+static const unsigned kTicketMaxEarlyDataTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 24;
+static const unsigned kAuthTimeoutTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 25;
+static const unsigned kEarlyALPNTag =
+    CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 26;
+
+static int SSL_SESSION_to_bytes_full(const SSL_SESSION *in, CBB *cbb,
+                                     int for_ticket) {
+  if (in == NULL || in->cipher == NULL) {
+    return 0;
+  }
+
+  CBB session, child, child2;
+  if (!CBB_add_asn1(cbb, &session, CBS_ASN1_SEQUENCE) ||
+      !CBB_add_asn1_uint64(&session, kVersion) ||
+      !CBB_add_asn1_uint64(&session, in->ssl_version) ||
+      !CBB_add_asn1(&session, &child, CBS_ASN1_OCTETSTRING) ||
+      !CBB_add_u16(&child, (uint16_t)(in->cipher->id & 0xffff)) ||
+      // The session ID is irrelevant for a session ticket.
+      !CBB_add_asn1_octet_string(&session, in->session_id,
+                                 for_ticket ? 0 : in->session_id_length) ||
+      !CBB_add_asn1_octet_string(&session, in->master_key,
+                                 in->master_key_length) ||
+      !CBB_add_asn1(&session, &child, kTimeTag) ||
+      !CBB_add_asn1_uint64(&child, in->time) ||
+      !CBB_add_asn1(&session, &child, kTimeoutTag) ||
+      !CBB_add_asn1_uint64(&child, in->timeout)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The peer certificate is only serialized if the SHA-256 isn't
+  // serialized instead.
+  if (sk_CRYPTO_BUFFER_num(in->certs.get()) > 0 && !in->peer_sha256_valid) {
+    const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), 0);
+    if (!CBB_add_asn1(&session, &child, kPeerTag) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                       CRYPTO_BUFFER_len(buffer))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  // Although it is OPTIONAL and usually empty, OpenSSL has
+  // historically always encoded the sid_ctx.
+  if (!CBB_add_asn1(&session, &child, kSessionIDContextTag) ||
+      !CBB_add_asn1_octet_string(&child, in->sid_ctx, in->sid_ctx_length)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->verify_result != X509_V_OK) {
+    if (!CBB_add_asn1(&session, &child, kVerifyResultTag) ||
+        !CBB_add_asn1_uint64(&child, in->verify_result)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->psk_identity) {
+    if (!CBB_add_asn1(&session, &child, kPSKIdentityTag) ||
+        !CBB_add_asn1_octet_string(&child,
+                                   (const uint8_t *)in->psk_identity.get(),
+                                   strlen(in->psk_identity.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->ticket_lifetime_hint > 0) {
+    if (!CBB_add_asn1(&session, &child, kTicketLifetimeHintTag) ||
+        !CBB_add_asn1_uint64(&child, in->ticket_lifetime_hint)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (!in->ticket.empty() && !for_ticket) {
+    if (!CBB_add_asn1(&session, &child, kTicketTag) ||
+        !CBB_add_asn1_octet_string(&child, in->ticket.data(),
+                                   in->ticket.size())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->peer_sha256_valid) {
+    if (!CBB_add_asn1(&session, &child, kPeerSHA256Tag) ||
+        !CBB_add_asn1_octet_string(&child, in->peer_sha256,
+                                   sizeof(in->peer_sha256))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->original_handshake_hash_len > 0) {
+    if (!CBB_add_asn1(&session, &child, kOriginalHandshakeHashTag) ||
+        !CBB_add_asn1_octet_string(&child, in->original_handshake_hash,
+                                   in->original_handshake_hash_len)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->signed_cert_timestamp_list != nullptr) {
+    if (!CBB_add_asn1(&session, &child, kSignedCertTimestampListTag) ||
+        !CBB_add_asn1_octet_string(
+            &child, CRYPTO_BUFFER_data(in->signed_cert_timestamp_list.get()),
+            CRYPTO_BUFFER_len(in->signed_cert_timestamp_list.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->ocsp_response != nullptr) {
+    if (!CBB_add_asn1(&session, &child, kOCSPResponseTag) ||
+        !CBB_add_asn1_octet_string(
+            &child, CRYPTO_BUFFER_data(in->ocsp_response.get()),
+            CRYPTO_BUFFER_len(in->ocsp_response.get()))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->extended_master_secret) {
+    if (!CBB_add_asn1(&session, &child, kExtendedMasterSecretTag) ||
+        !CBB_add_asn1_bool(&child, true)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->group_id > 0 &&
+      (!CBB_add_asn1(&session, &child, kGroupIDTag) ||
+       !CBB_add_asn1_uint64(&child, in->group_id))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  // The certificate chain is only serialized if the leaf's SHA-256 isn't
+  // serialized instead.
+  if (in->certs != NULL &&
+      !in->peer_sha256_valid &&
+      sk_CRYPTO_BUFFER_num(in->certs.get()) >= 2) {
+    if (!CBB_add_asn1(&session, &child, kCertChainTag)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(in->certs.get()); i++) {
+      const CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(in->certs.get(), i);
+      if (!CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                         CRYPTO_BUFFER_len(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return 0;
+      }
+    }
+  }
+
+  if (in->ticket_age_add_valid) {
+    if (!CBB_add_asn1(&session, &child, kTicketAgeAddTag) ||
+        !CBB_add_asn1(&child, &child2, CBS_ASN1_OCTETSTRING) ||
+        !CBB_add_u32(&child2, in->ticket_age_add)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (!in->is_server) {
+    if (!CBB_add_asn1(&session, &child, kIsServerTag) ||
+        !CBB_add_asn1_bool(&child, false)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  if (in->peer_signature_algorithm != 0 &&
+      (!CBB_add_asn1(&session, &child, kPeerSignatureAlgorithmTag) ||
+       !CBB_add_asn1_uint64(&child, in->peer_signature_algorithm))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->ticket_max_early_data != 0 &&
+      (!CBB_add_asn1(&session, &child, kTicketMaxEarlyDataTag) ||
+       !CBB_add_asn1_uint64(&child, in->ticket_max_early_data))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (in->timeout != in->auth_timeout &&
+      (!CBB_add_asn1(&session, &child, kAuthTimeoutTag) ||
+       !CBB_add_asn1_uint64(&child, in->auth_timeout))) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  if (!in->early_alpn.empty()) {
+    if (!CBB_add_asn1(&session, &child, kEarlyALPNTag) ||
+        !CBB_add_asn1_octet_string(&child, in->early_alpn.data(),
+                                   in->early_alpn.size())) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+// SSL_SESSION_parse_string gets an optional ASN.1 OCTET STRING explicitly
+// tagged with |tag| from |cbs| and saves it in |*out|. If the element was not
+// found, it sets |*out| to NULL. It returns one on success, whether or not the
+// element was found, and zero on decode error.
+static int SSL_SESSION_parse_string(CBS *cbs, UniquePtr<char> *out, unsigned tag) {
+  CBS value;
+  int present;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, &present, tag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  if (present) {
+    if (CBS_contains_zero_byte(&value)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+      return 0;
+    }
+    char *raw = nullptr;
+    if (!CBS_strdup(&value, &raw)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return 0;
+    }
+    out->reset(raw);
+  } else {
+    out->reset();
+  }
+  return 1;
+}
+
+// SSL_SESSION_parse_octet_string gets an optional ASN.1 OCTET STRING explicitly
+// tagged with |tag| from |cbs| and stows it in |*out|. It returns one on
+// success, whether or not the element was found, and zero on decode error.
+static bool SSL_SESSION_parse_octet_string(CBS *cbs, Array<uint8_t> *out,
+                                           unsigned tag) {
+  CBS value;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return false;
+  }
+  return out->CopyFrom(value);
+}
+
+static int SSL_SESSION_parse_crypto_buffer(CBS *cbs,
+                                           UniquePtr<CRYPTO_BUFFER> *out,
+                                           unsigned tag,
+                                           CRYPTO_BUFFER_POOL *pool) {
+  if (!CBS_peek_asn1_tag(cbs, tag)) {
+    return 1;
+  }
+
+  CBS child, value;
+  if (!CBS_get_asn1(cbs, &child, tag) ||
+      !CBS_get_asn1(&child, &value, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&child) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  out->reset(CRYPTO_BUFFER_new_from_CBS(&value, pool));
+  if (*out == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  return 1;
+}
+
+// SSL_SESSION_parse_bounded_octet_string parses an optional ASN.1 OCTET STRING
+// explicitly tagged with |tag| of size at most |max_out|.
+static int SSL_SESSION_parse_bounded_octet_string(
+    CBS *cbs, uint8_t *out, uint8_t *out_len, uint8_t max_out, unsigned tag) {
+  CBS value;
+  if (!CBS_get_optional_asn1_octet_string(cbs, &value, NULL, tag) ||
+      CBS_len(&value) > max_out) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  OPENSSL_memcpy(out, CBS_data(&value), CBS_len(&value));
+  *out_len = (uint8_t)CBS_len(&value);
+  return 1;
+}
+
+static int SSL_SESSION_parse_long(CBS *cbs, long *out, unsigned tag,
+                                  long default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (long)value;
+  return 1;
+}
+
+static int SSL_SESSION_parse_u32(CBS *cbs, uint32_t *out, unsigned tag,
+                                 uint32_t default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > 0xffffffff) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (uint32_t)value;
+  return 1;
+}
+
+static int SSL_SESSION_parse_u16(CBS *cbs, uint16_t *out, unsigned tag,
+                                 uint16_t default_value) {
+  uint64_t value;
+  if (!CBS_get_optional_asn1_uint64(cbs, &value, tag,
+                                    (uint64_t)default_value) ||
+      value > 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return 0;
+  }
+  *out = (uint16_t)value;
+  return 1;
+}
+
+UniquePtr<SSL_SESSION> SSL_SESSION_parse(CBS *cbs,
+                                         const SSL_X509_METHOD *x509_method,
+                                         CRYPTO_BUFFER_POOL *pool) {
+  UniquePtr<SSL_SESSION> ret = ssl_session_new(x509_method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  CBS session;
+  uint64_t version, ssl_version;
+  uint16_t unused;
+  if (!CBS_get_asn1(cbs, &session, CBS_ASN1_SEQUENCE) ||
+      !CBS_get_asn1_uint64(&session, &version) ||
+      version != kVersion ||
+      !CBS_get_asn1_uint64(&session, &ssl_version) ||
+      // Require sessions have versions valid in either TLS or DTLS. The session
+      // will not be used by the handshake if not applicable, but, for
+      // simplicity, never parse a session that does not pass
+      // |ssl_protocol_version_from_wire|.
+      ssl_version > UINT16_MAX ||
+      !ssl_protocol_version_from_wire(&unused, ssl_version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->ssl_version = ssl_version;
+
+  CBS cipher;
+  uint16_t cipher_value;
+  if (!CBS_get_asn1(&session, &cipher, CBS_ASN1_OCTETSTRING) ||
+      !CBS_get_u16(&cipher, &cipher_value) ||
+      CBS_len(&cipher) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->cipher = SSL_get_cipher_by_value(cipher_value);
+  if (ret->cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_CIPHER);
+    return nullptr;
+  }
+
+  CBS session_id, master_key;
+  if (!CBS_get_asn1(&session, &session_id, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&session_id) > SSL3_MAX_SSL_SESSION_ID_LENGTH ||
+      !CBS_get_asn1(&session, &master_key, CBS_ASN1_OCTETSTRING) ||
+      CBS_len(&master_key) > SSL_MAX_MASTER_KEY_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  OPENSSL_memcpy(ret->session_id, CBS_data(&session_id), CBS_len(&session_id));
+  ret->session_id_length = CBS_len(&session_id);
+  OPENSSL_memcpy(ret->master_key, CBS_data(&master_key), CBS_len(&master_key));
+  ret->master_key_length = CBS_len(&master_key);
+
+  CBS child;
+  uint64_t timeout;
+  if (!CBS_get_asn1(&session, &child, kTimeTag) ||
+      !CBS_get_asn1_uint64(&child, &ret->time) ||
+      !CBS_get_asn1(&session, &child, kTimeoutTag) ||
+      !CBS_get_asn1_uint64(&child, &timeout) ||
+      timeout > UINT32_MAX) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  ret->timeout = (uint32_t)timeout;
+
+  CBS peer;
+  int has_peer;
+  if (!CBS_get_optional_asn1(&session, &peer, &has_peer, kPeerTag) ||
+      (has_peer && CBS_len(&peer) == 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  // |peer| is processed with the certificate chain.
+
+  if (!SSL_SESSION_parse_bounded_octet_string(
+          &session, ret->sid_ctx, &ret->sid_ctx_length, sizeof(ret->sid_ctx),
+          kSessionIDContextTag) ||
+      !SSL_SESSION_parse_long(&session, &ret->verify_result, kVerifyResultTag,
+                              X509_V_OK)) {
+    return nullptr;
+  }
+
+  // Skip the historical hostName field.
+  CBS unused_hostname;
+  if (!CBS_get_optional_asn1(&session, &unused_hostname, nullptr,
+                             kHostNameTag)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  if (!SSL_SESSION_parse_string(&session, &ret->psk_identity,
+                                kPSKIdentityTag) ||
+      !SSL_SESSION_parse_u32(&session, &ret->ticket_lifetime_hint,
+                             kTicketLifetimeHintTag, 0) ||
+      !SSL_SESSION_parse_octet_string(&session, &ret->ticket, kTicketTag)) {
+    return nullptr;
+  }
+
+  if (CBS_peek_asn1_tag(&session, kPeerSHA256Tag)) {
+    CBS peer_sha256;
+    if (!CBS_get_asn1(&session, &child, kPeerSHA256Tag) ||
+        !CBS_get_asn1(&child, &peer_sha256, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&peer_sha256) != sizeof(ret->peer_sha256) ||
+        CBS_len(&child) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+      return nullptr;
+    }
+    OPENSSL_memcpy(ret->peer_sha256, CBS_data(&peer_sha256),
+                   sizeof(ret->peer_sha256));
+    ret->peer_sha256_valid = 1;
+  } else {
+    ret->peer_sha256_valid = 0;
+  }
+
+  if (!SSL_SESSION_parse_bounded_octet_string(
+          &session, ret->original_handshake_hash,
+          &ret->original_handshake_hash_len,
+          sizeof(ret->original_handshake_hash), kOriginalHandshakeHashTag) ||
+      !SSL_SESSION_parse_crypto_buffer(&session,
+                                       &ret->signed_cert_timestamp_list,
+                                       kSignedCertTimestampListTag, pool) ||
+      !SSL_SESSION_parse_crypto_buffer(&session, &ret->ocsp_response,
+                                       kOCSPResponseTag, pool)) {
+    return nullptr;
+  }
+
+  int extended_master_secret;
+  if (!CBS_get_optional_asn1_bool(&session, &extended_master_secret,
+                                  kExtendedMasterSecretTag,
+                                  0 /* default to false */)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  ret->extended_master_secret = !!extended_master_secret;
+
+  if (!SSL_SESSION_parse_u16(&session, &ret->group_id, kGroupIDTag, 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  CBS cert_chain;
+  CBS_init(&cert_chain, NULL, 0);
+  int has_cert_chain;
+  if (!CBS_get_optional_asn1(&session, &cert_chain, &has_cert_chain,
+                             kCertChainTag) ||
+      (has_cert_chain && CBS_len(&cert_chain) == 0)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  if (has_cert_chain && !has_peer) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  if (has_peer || has_cert_chain) {
+    ret->certs.reset(sk_CRYPTO_BUFFER_new_null());
+    if (ret->certs == nullptr) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+
+    if (has_peer) {
+      UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&peer, pool));
+      if (!buffer ||
+          !PushToStack(ret->certs.get(), std::move(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return nullptr;
+      }
+    }
+
+    while (CBS_len(&cert_chain) > 0) {
+      CBS cert;
+      if (!CBS_get_any_asn1_element(&cert_chain, &cert, NULL, NULL) ||
+          CBS_len(&cert) == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+        return nullptr;
+      }
+
+      UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new_from_CBS(&cert, pool));
+      if (buffer == nullptr ||
+          !PushToStack(ret->certs.get(), std::move(buffer))) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return nullptr;
+      }
+    }
+  }
+
+  CBS age_add;
+  int age_add_present;
+  if (!CBS_get_optional_asn1_octet_string(&session, &age_add, &age_add_present,
+                                          kTicketAgeAddTag) ||
+      (age_add_present &&
+       !CBS_get_u32(&age_add, &ret->ticket_age_add)) ||
+      CBS_len(&age_add) != 0) {
+    return nullptr;
+  }
+  ret->ticket_age_add_valid = age_add_present != 0;
+
+  int is_server;
+  if (!CBS_get_optional_asn1_bool(&session, &is_server, kIsServerTag,
+                                  1 /* default to true */)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+  /* TODO: in time we can include |is_server| for servers too, then we can
+     enforce that client and server sessions are never mixed up. */
+
+  ret->is_server = is_server;
+
+  if (!SSL_SESSION_parse_u16(&session, &ret->peer_signature_algorithm,
+                             kPeerSignatureAlgorithmTag, 0) ||
+      !SSL_SESSION_parse_u32(&session, &ret->ticket_max_early_data,
+                             kTicketMaxEarlyDataTag, 0) ||
+      !SSL_SESSION_parse_u32(&session, &ret->auth_timeout, kAuthTimeoutTag,
+                             ret->timeout) ||
+      !SSL_SESSION_parse_octet_string(&session, &ret->early_alpn,
+                                      kEarlyALPNTag) ||
+      CBS_len(&session) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  if (!x509_method->session_cache_objects(ret.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return nullptr;
+  }
+
+  return ret;
+}
+
+int ssl_session_serialize(const SSL_SESSION *in, CBB *cbb) {
+  return SSL_SESSION_to_bytes_full(in, cbb, 0);
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_SESSION_to_bytes(const SSL_SESSION *in, uint8_t **out_data,
+                         size_t *out_len) {
+  if (in->not_resumable) {
+    // If the caller has an unresumable session, e.g. if |SSL_get_session| were
+    // called on a TLS 1.3 or False Started connection, serialize with a
+    // placeholder value so it is not accidentally deserialized into a resumable
+    // one.
+    static const char kNotResumableSession[] = "NOT RESUMABLE";
+
+    *out_len = strlen(kNotResumableSession);
+    *out_data = (uint8_t *)OPENSSL_memdup(kNotResumableSession, *out_len);
+    if (*out_data == NULL) {
+      return 0;
+    }
+
+    return 1;
+  }
+
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 256) ||
+      !SSL_SESSION_to_bytes_full(in, cbb.get(), 0) ||
+      !CBB_finish(cbb.get(), out_data, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_SESSION_to_bytes_for_ticket(const SSL_SESSION *in, uint8_t **out_data,
+                                    size_t *out_len) {
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 256) ||
+      !SSL_SESSION_to_bytes_full(in, cbb.get(), 1) ||
+      !CBB_finish(cbb.get(), out_data, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int i2d_SSL_SESSION(SSL_SESSION *in, uint8_t **pp) {
+  uint8_t *out;
+  size_t len;
+
+  if (!SSL_SESSION_to_bytes(in, &out, &len)) {
+    return -1;
+  }
+
+  if (len > INT_MAX) {
+    OPENSSL_free(out);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return -1;
+  }
+
+  if (pp) {
+    OPENSSL_memcpy(*pp, out, len);
+    *pp += len;
+  }
+  OPENSSL_free(out);
+
+  return len;
+}
+
+SSL_SESSION *SSL_SESSION_from_bytes(const uint8_t *in, size_t in_len,
+                                    const SSL_CTX *ctx) {
+  CBS cbs;
+  CBS_init(&cbs, in, in_len);
+  UniquePtr<SSL_SESSION> ret =
+      SSL_SESSION_parse(&cbs, ctx->x509_method, ctx->pool);
+  if (!ret) {
+    return NULL;
+  }
+  if (CBS_len(&cbs) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SSL_SESSION);
+    return NULL;
+  }
+  return ret.release();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc
new file mode 100644
index 0000000..bff1dfa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc	
@@ -0,0 +1,306 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// BIO uses int instead of size_t. No lengths will exceed uint16_t, so this will
+// not overflow.
+static_assert(0xffff <= INT_MAX, "uint16_t does not fit in int");
+
+static_assert((SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) == 0,
+              "SSL3_ALIGN_PAYLOAD must be a power of 2");
+
+void SSLBuffer::Clear() {
+  if (buf_allocated_) {
+    free(buf_);  // Allocated with malloc().
+  }
+  buf_ = nullptr;
+  buf_allocated_ = false;
+  offset_ = 0;
+  size_ = 0;
+  cap_ = 0;
+}
+
+bool SSLBuffer::EnsureCap(size_t header_len, size_t new_cap) {
+  if (new_cap > 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (cap_ >= new_cap) {
+    return true;
+  }
+
+  uint8_t *new_buf;
+  bool new_buf_allocated;
+  size_t new_offset;
+  if (new_cap <= sizeof(inline_buf_)) {
+    // This function is called twice per TLS record, first for the five-byte
+    // header. To avoid allocating twice, use an inline buffer for short inputs.
+    new_buf = inline_buf_;
+    new_buf_allocated = false;
+    new_offset = 0;
+  } else {
+    // Add up to |SSL3_ALIGN_PAYLOAD| - 1 bytes of slack for alignment.
+    //
+    // Since this buffer gets allocated quite frequently and doesn't contain any
+    // sensitive data, we allocate with malloc rather than |OPENSSL_malloc| and
+    // avoid zeroing on free.
+    new_buf = (uint8_t *)malloc(new_cap + SSL3_ALIGN_PAYLOAD - 1);
+    if (new_buf == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    new_buf_allocated = true;
+
+    // Offset the buffer such that the record body is aligned.
+    new_offset =
+        (0 - header_len - (uintptr_t)new_buf) & (SSL3_ALIGN_PAYLOAD - 1);
+  }
+
+  // Note if the both old and new buffer are inline, the source and destination
+  // may alias.
+  OPENSSL_memmove(new_buf + new_offset, buf_ + offset_, size_);
+
+  if (buf_allocated_) {
+    free(buf_);  // Allocated with malloc().
+  }
+
+  buf_ = new_buf;
+  buf_allocated_ = new_buf_allocated;
+  offset_ = new_offset;
+  cap_ = new_cap;
+  return true;
+}
+
+void SSLBuffer::DidWrite(size_t new_size) {
+  if (new_size > cap() - size()) {
+    abort();
+  }
+  size_ += new_size;
+}
+
+void SSLBuffer::Consume(size_t len) {
+  if (len > size_) {
+    abort();
+  }
+  offset_ += (uint16_t)len;
+  size_ -= (uint16_t)len;
+  cap_ -= (uint16_t)len;
+}
+
+void SSLBuffer::DiscardConsumed() {
+  if (size_ == 0) {
+    Clear();
+  }
+}
+
+static int dtls_read_buffer_next_packet(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->read_buffer;
+
+  if (!buf->empty()) {
+    // It is an error to call |dtls_read_buffer_extend| when the read buffer is
+    // not empty.
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  // Read a single packet from |ssl->rbio|. |buf->cap()| must fit in an int.
+  int ret =
+      BIO_read(ssl->rbio.get(), buf->data(), static_cast<int>(buf->cap()));
+  if (ret <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+    return ret;
+  }
+  buf->DidWrite(static_cast<size_t>(ret));
+  return 1;
+}
+
+static int tls_read_buffer_extend_to(SSL *ssl, size_t len) {
+  SSLBuffer *buf = &ssl->s3->read_buffer;
+
+  if (len > buf->cap()) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return -1;
+  }
+
+  // Read until the target length is reached.
+  while (buf->size() < len) {
+    // The amount of data to read is bounded by |buf->cap|, which must fit in an
+    // int.
+    int ret = BIO_read(ssl->rbio.get(), buf->data() + buf->size(),
+                       static_cast<int>(len - buf->size()));
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+      return ret;
+    }
+    buf->DidWrite(static_cast<size_t>(ret));
+  }
+
+  return 1;
+}
+
+int ssl_read_buffer_extend_to(SSL *ssl, size_t len) {
+  // |ssl_read_buffer_extend_to| implicitly discards any consumed data.
+  ssl->s3->read_buffer.DiscardConsumed();
+
+  if (SSL_is_dtls(ssl)) {
+    static_assert(
+        DTLS1_RT_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH <= 0xffff,
+        "DTLS read buffer is too large");
+
+    // The |len| parameter is ignored in DTLS.
+    len = DTLS1_RT_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH;
+  }
+
+  if (!ssl->s3->read_buffer.EnsureCap(ssl_record_prefix_len(ssl), len)) {
+    return -1;
+  }
+
+  if (ssl->rbio == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BIO_NOT_SET);
+    return -1;
+  }
+
+  int ret;
+  if (SSL_is_dtls(ssl)) {
+    // |len| is ignored for a datagram transport.
+    ret = dtls_read_buffer_next_packet(ssl);
+  } else {
+    ret = tls_read_buffer_extend_to(ssl, len);
+  }
+
+  if (ret <= 0) {
+    // If the buffer was empty originally and remained empty after attempting to
+    // extend it, release the buffer until the next attempt.
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  return ret;
+}
+
+int ssl_handle_open_record(SSL *ssl, bool *out_retry, ssl_open_record_t ret,
+                           size_t consumed, uint8_t alert) {
+  *out_retry = false;
+  if (ret != ssl_open_record_partial) {
+    ssl->s3->read_buffer.Consume(consumed);
+  }
+  if (ret != ssl_open_record_success) {
+    // Nothing was returned to the caller, so discard anything marked consumed.
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  switch (ret) {
+    case ssl_open_record_success:
+      return 1;
+
+    case ssl_open_record_partial: {
+      int read_ret = ssl_read_buffer_extend_to(ssl, consumed);
+      if (read_ret <= 0) {
+        return read_ret;
+      }
+      *out_retry = true;
+      return 1;
+    }
+
+    case ssl_open_record_discard:
+      *out_retry = true;
+      return 1;
+
+    case ssl_open_record_close_notify:
+      return 0;
+
+    case ssl_open_record_error:
+      if (alert != 0) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      }
+      return -1;
+  }
+  assert(0);
+  return -1;
+}
+
+
+static_assert(SSL3_RT_HEADER_LENGTH * 2 +
+                      SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD * 2 +
+                      SSL3_RT_MAX_PLAIN_LENGTH <=
+                  0xffff,
+              "maximum TLS write buffer is too large");
+
+static_assert(DTLS1_RT_HEADER_LENGTH + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD +
+                      SSL3_RT_MAX_PLAIN_LENGTH <=
+                  0xffff,
+              "maximum DTLS write buffer is too large");
+
+static int tls_write_buffer_flush(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+
+  while (!buf->empty()) {
+    int ret = BIO_write(ssl->wbio.get(), buf->data(), buf->size());
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+    buf->Consume(static_cast<size_t>(ret));
+  }
+  buf->Clear();
+  return 1;
+}
+
+static int dtls_write_buffer_flush(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  if (buf->empty()) {
+    return 1;
+  }
+
+  int ret = BIO_write(ssl->wbio.get(), buf->data(), buf->size());
+  if (ret <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    // If the write failed, drop the write buffer anyway. Datagram transports
+    // can't write half a packet, so the caller is expected to retry from the
+    // top.
+    buf->Clear();
+    return ret;
+  }
+  buf->Clear();
+  return 1;
+}
+
+int ssl_write_buffer_flush(SSL *ssl) {
+  if (ssl->wbio == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BIO_NOT_SET);
+    return -1;
+  }
+
+  if (SSL_is_dtls(ssl)) {
+    return dtls_write_buffer_flush(ssl);
+  } else {
+    return tls_write_buffer_flush(ssl);
+  }
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc.grpc_back
new file mode 100644
index 0000000..d73055f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_buffer.cc.grpc_back	
@@ -0,0 +1,306 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// BIO uses int instead of size_t. No lengths will exceed uint16_t, so this will
+// not overflow.
+static_assert(0xffff <= INT_MAX, "uint16_t does not fit in int");
+
+static_assert((SSL3_ALIGN_PAYLOAD & (SSL3_ALIGN_PAYLOAD - 1)) == 0,
+              "SSL3_ALIGN_PAYLOAD must be a power of 2");
+
+void SSLBuffer::Clear() {
+  if (buf_allocated_) {
+    free(buf_);  // Allocated with malloc().
+  }
+  buf_ = nullptr;
+  buf_allocated_ = false;
+  offset_ = 0;
+  size_ = 0;
+  cap_ = 0;
+}
+
+bool SSLBuffer::EnsureCap(size_t header_len, size_t new_cap) {
+  if (new_cap > 0xffff) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (cap_ >= new_cap) {
+    return true;
+  }
+
+  uint8_t *new_buf;
+  bool new_buf_allocated;
+  size_t new_offset;
+  if (new_cap <= sizeof(inline_buf_)) {
+    // This function is called twice per TLS record, first for the five-byte
+    // header. To avoid allocating twice, use an inline buffer for short inputs.
+    new_buf = inline_buf_;
+    new_buf_allocated = false;
+    new_offset = 0;
+  } else {
+    // Add up to |SSL3_ALIGN_PAYLOAD| - 1 bytes of slack for alignment.
+    //
+    // Since this buffer gets allocated quite frequently and doesn't contain any
+    // sensitive data, we allocate with malloc rather than |OPENSSL_malloc| and
+    // avoid zeroing on free.
+    new_buf = (uint8_t *)malloc(new_cap + SSL3_ALIGN_PAYLOAD - 1);
+    if (new_buf == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    new_buf_allocated = true;
+
+    // Offset the buffer such that the record body is aligned.
+    new_offset =
+        (0 - header_len - (uintptr_t)new_buf) & (SSL3_ALIGN_PAYLOAD - 1);
+  }
+
+  // Note if the both old and new buffer are inline, the source and destination
+  // may alias.
+  OPENSSL_memmove(new_buf + new_offset, buf_ + offset_, size_);
+
+  if (buf_allocated_) {
+    free(buf_);  // Allocated with malloc().
+  }
+
+  buf_ = new_buf;
+  buf_allocated_ = new_buf_allocated;
+  offset_ = new_offset;
+  cap_ = new_cap;
+  return true;
+}
+
+void SSLBuffer::DidWrite(size_t new_size) {
+  if (new_size > cap() - size()) {
+    abort();
+  }
+  size_ += new_size;
+}
+
+void SSLBuffer::Consume(size_t len) {
+  if (len > size_) {
+    abort();
+  }
+  offset_ += (uint16_t)len;
+  size_ -= (uint16_t)len;
+  cap_ -= (uint16_t)len;
+}
+
+void SSLBuffer::DiscardConsumed() {
+  if (size_ == 0) {
+    Clear();
+  }
+}
+
+static int dtls_read_buffer_next_packet(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->read_buffer;
+
+  if (!buf->empty()) {
+    // It is an error to call |dtls_read_buffer_extend| when the read buffer is
+    // not empty.
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return -1;
+  }
+
+  // Read a single packet from |ssl->rbio|. |buf->cap()| must fit in an int.
+  int ret =
+      BIO_read(ssl->rbio.get(), buf->data(), static_cast<int>(buf->cap()));
+  if (ret <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+    return ret;
+  }
+  buf->DidWrite(static_cast<size_t>(ret));
+  return 1;
+}
+
+static int tls_read_buffer_extend_to(SSL *ssl, size_t len) {
+  SSLBuffer *buf = &ssl->s3->read_buffer;
+
+  if (len > buf->cap()) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return -1;
+  }
+
+  // Read until the target length is reached.
+  while (buf->size() < len) {
+    // The amount of data to read is bounded by |buf->cap|, which must fit in an
+    // int.
+    int ret = BIO_read(ssl->rbio.get(), buf->data() + buf->size(),
+                       static_cast<int>(len - buf->size()));
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_READ;
+      return ret;
+    }
+    buf->DidWrite(static_cast<size_t>(ret));
+  }
+
+  return 1;
+}
+
+int ssl_read_buffer_extend_to(SSL *ssl, size_t len) {
+  // |ssl_read_buffer_extend_to| implicitly discards any consumed data.
+  ssl->s3->read_buffer.DiscardConsumed();
+
+  if (SSL_is_dtls(ssl)) {
+    static_assert(
+        DTLS1_RT_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH <= 0xffff,
+        "DTLS read buffer is too large");
+
+    // The |len| parameter is ignored in DTLS.
+    len = DTLS1_RT_HEADER_LENGTH + SSL3_RT_MAX_ENCRYPTED_LENGTH;
+  }
+
+  if (!ssl->s3->read_buffer.EnsureCap(ssl_record_prefix_len(ssl), len)) {
+    return -1;
+  }
+
+  if (ssl->rbio == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BIO_NOT_SET);
+    return -1;
+  }
+
+  int ret;
+  if (SSL_is_dtls(ssl)) {
+    // |len| is ignored for a datagram transport.
+    ret = dtls_read_buffer_next_packet(ssl);
+  } else {
+    ret = tls_read_buffer_extend_to(ssl, len);
+  }
+
+  if (ret <= 0) {
+    // If the buffer was empty originally and remained empty after attempting to
+    // extend it, release the buffer until the next attempt.
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  return ret;
+}
+
+int ssl_handle_open_record(SSL *ssl, bool *out_retry, ssl_open_record_t ret,
+                           size_t consumed, uint8_t alert) {
+  *out_retry = false;
+  if (ret != ssl_open_record_partial) {
+    ssl->s3->read_buffer.Consume(consumed);
+  }
+  if (ret != ssl_open_record_success) {
+    // Nothing was returned to the caller, so discard anything marked consumed.
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  switch (ret) {
+    case ssl_open_record_success:
+      return 1;
+
+    case ssl_open_record_partial: {
+      int read_ret = ssl_read_buffer_extend_to(ssl, consumed);
+      if (read_ret <= 0) {
+        return read_ret;
+      }
+      *out_retry = true;
+      return 1;
+    }
+
+    case ssl_open_record_discard:
+      *out_retry = true;
+      return 1;
+
+    case ssl_open_record_close_notify:
+      return 0;
+
+    case ssl_open_record_error:
+      if (alert != 0) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      }
+      return -1;
+  }
+  assert(0);
+  return -1;
+}
+
+
+static_assert(SSL3_RT_HEADER_LENGTH * 2 +
+                      SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD * 2 +
+                      SSL3_RT_MAX_PLAIN_LENGTH <=
+                  0xffff,
+              "maximum TLS write buffer is too large");
+
+static_assert(DTLS1_RT_HEADER_LENGTH + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD +
+                      SSL3_RT_MAX_PLAIN_LENGTH <=
+                  0xffff,
+              "maximum DTLS write buffer is too large");
+
+static int tls_write_buffer_flush(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+
+  while (!buf->empty()) {
+    int ret = BIO_write(ssl->wbio.get(), buf->data(), buf->size());
+    if (ret <= 0) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+      return ret;
+    }
+    buf->Consume(static_cast<size_t>(ret));
+  }
+  buf->Clear();
+  return 1;
+}
+
+static int dtls_write_buffer_flush(SSL *ssl) {
+  SSLBuffer *buf = &ssl->s3->write_buffer;
+  if (buf->empty()) {
+    return 1;
+  }
+
+  int ret = BIO_write(ssl->wbio.get(), buf->data(), buf->size());
+  if (ret <= 0) {
+    ssl->s3->rwstate = SSL_ERROR_WANT_WRITE;
+    // If the write failed, drop the write buffer anyway. Datagram transports
+    // can't write half a packet, so the caller is expected to retry from the
+    // top.
+    buf->Clear();
+    return ret;
+  }
+  buf->Clear();
+  return 1;
+}
+
+int ssl_write_buffer_flush(SSL *ssl) {
+  if (ssl->wbio == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BIO_NOT_SET);
+    return -1;
+  }
+
+  if (SSL_is_dtls(ssl)) {
+    return dtls_write_buffer_flush(ssl);
+  } else {
+    return tls_write_buffer_flush(ssl);
+  }
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc
new file mode 100644
index 0000000..6c9ae50
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc	
@@ -0,0 +1,1015 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+CERT::CERT(const SSL_X509_METHOD *x509_method_arg)
+    : x509_method(x509_method_arg) {}
+
+CERT::~CERT() {
+  ssl_cert_clear_certs(this);
+  x509_method->cert_free(this);
+}
+
+static CRYPTO_BUFFER *buffer_up_ref(CRYPTO_BUFFER *buffer) {
+  CRYPTO_BUFFER_up_ref(buffer);
+  return buffer;
+}
+
+UniquePtr<CERT> ssl_cert_dup(CERT *cert) {
+  UniquePtr<CERT> ret = MakeUnique<CERT>(cert->x509_method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  if (cert->chain) {
+    ret->chain.reset(sk_CRYPTO_BUFFER_deep_copy(
+        cert->chain.get(), buffer_up_ref, CRYPTO_BUFFER_free));
+    if (!ret->chain) {
+      return nullptr;
+    }
+  }
+
+  ret->privatekey = UpRef(cert->privatekey);
+  ret->key_method = cert->key_method;
+
+  if (!ret->sigalgs.CopyFrom(cert->sigalgs)) {
+    return nullptr;
+  }
+
+  ret->cert_cb = cert->cert_cb;
+  ret->cert_cb_arg = cert->cert_cb_arg;
+
+  ret->x509_method->cert_dup(ret.get(), cert);
+
+  ret->signed_cert_timestamp_list = UpRef(cert->signed_cert_timestamp_list);
+  ret->ocsp_response = UpRef(cert->ocsp_response);
+
+  ret->sid_ctx_length = cert->sid_ctx_length;
+  OPENSSL_memcpy(ret->sid_ctx, cert->sid_ctx, sizeof(ret->sid_ctx));
+
+  if (cert->dc) {
+    ret->dc = cert->dc->Dup();
+    if (!ret->dc) {
+       return nullptr;
+    }
+  }
+
+  ret->dc_privatekey = UpRef(cert->dc_privatekey);
+  ret->dc_key_method = cert->dc_key_method;
+
+  return ret;
+}
+
+// Free up and clear all certificates and chains
+void ssl_cert_clear_certs(CERT *cert) {
+  if (cert == NULL) {
+    return;
+  }
+
+  cert->x509_method->cert_clear(cert);
+
+  cert->chain.reset();
+  cert->privatekey.reset();
+  cert->key_method = nullptr;
+
+  cert->dc.reset();
+  cert->dc_privatekey.reset();
+  cert->dc_key_method = nullptr;
+}
+
+static void ssl_cert_set_cert_cb(CERT *cert, int (*cb)(SSL *ssl, void *arg),
+                                 void *arg) {
+  cert->cert_cb = cb;
+  cert->cert_cb_arg = arg;
+}
+
+enum leaf_cert_and_privkey_result_t {
+  leaf_cert_and_privkey_error,
+  leaf_cert_and_privkey_ok,
+  leaf_cert_and_privkey_mismatch,
+};
+
+// check_leaf_cert_and_privkey checks whether the certificate in |leaf_buffer|
+// and the private key in |privkey| are suitable and coherent. It returns
+// |leaf_cert_and_privkey_error| and pushes to the error queue if a problem is
+// found. If the certificate and private key are valid, but incoherent, it
+// returns |leaf_cert_and_privkey_mismatch|. Otherwise it returns
+// |leaf_cert_and_privkey_ok|.
+static enum leaf_cert_and_privkey_result_t check_leaf_cert_and_privkey(
+    CRYPTO_BUFFER *leaf_buffer, EVP_PKEY *privkey) {
+  CBS cert_cbs;
+  CRYPTO_BUFFER_init_CBS(leaf_buffer, &cert_cbs);
+  UniquePtr<EVP_PKEY> pubkey = ssl_cert_parse_pubkey(&cert_cbs);
+  if (!pubkey) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return leaf_cert_and_privkey_error;
+  }
+
+  if (!ssl_is_key_type_supported(pubkey->type)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return leaf_cert_and_privkey_error;
+  }
+
+  // An ECC certificate may be usable for ECDH or ECDSA. We only support ECDSA
+  // certificates, so sanity-check the key usage extension.
+  if (pubkey->type == EVP_PKEY_EC &&
+      !ssl_cert_check_key_usage(&cert_cbs, key_usage_digital_signature)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return leaf_cert_and_privkey_error;
+  }
+
+  if (privkey != NULL &&
+      // Sanity-check that the private key and the certificate match.
+      !ssl_compare_public_and_private_key(pubkey.get(), privkey)) {
+    ERR_clear_error();
+    return leaf_cert_and_privkey_mismatch;
+  }
+
+  return leaf_cert_and_privkey_ok;
+}
+
+static int cert_set_chain_and_key(
+    CERT *cert, CRYPTO_BUFFER *const *certs, size_t num_certs,
+    EVP_PKEY *privkey, const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  if (num_certs == 0 ||
+      (privkey == NULL && privkey_method == NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (privkey != NULL && privkey_method != NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD);
+    return 0;
+  }
+
+  switch (check_leaf_cert_and_privkey(certs[0], privkey)) {
+    case leaf_cert_and_privkey_error:
+      return 0;
+    case leaf_cert_and_privkey_mismatch:
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH);
+      return 0;
+    case leaf_cert_and_privkey_ok:
+      break;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs_sk(sk_CRYPTO_BUFFER_new_null());
+  if (!certs_sk) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < num_certs; i++) {
+    if (!PushToStack(certs_sk.get(), UpRef(certs[i]))) {
+      return 0;
+    }
+  }
+
+  cert->privatekey = UpRef(privkey);
+  cert->key_method = privkey_method;
+
+  cert->chain = std::move(certs_sk);
+  return 1;
+}
+
+bool ssl_set_cert(CERT *cert, UniquePtr<CRYPTO_BUFFER> buffer) {
+  switch (check_leaf_cert_and_privkey(buffer.get(), cert->privatekey.get())) {
+    case leaf_cert_and_privkey_error:
+      return false;
+    case leaf_cert_and_privkey_mismatch:
+      // don't fail for a cert/key mismatch, just free current private key
+      // (when switching to a different cert & key, first this function should
+      // be used, then |ssl_set_pkey|.
+      cert->privatekey.reset();
+      break;
+    case leaf_cert_and_privkey_ok:
+      break;
+  }
+
+  cert->x509_method->cert_flush_cached_leaf(cert);
+
+  if (cert->chain != nullptr) {
+    CRYPTO_BUFFER_free(sk_CRYPTO_BUFFER_value(cert->chain.get(), 0));
+    sk_CRYPTO_BUFFER_set(cert->chain.get(), 0, buffer.release());
+    return true;
+  }
+
+  cert->chain.reset(sk_CRYPTO_BUFFER_new_null());
+  if (cert->chain == nullptr) {
+    return false;
+  }
+
+  if (!PushToStack(cert->chain.get(), std::move(buffer))) {
+    cert->chain.reset();
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_has_certificate(const SSL_HANDSHAKE *hs) {
+  return hs->config->cert->chain != nullptr &&
+         sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0) != nullptr &&
+         ssl_has_private_key(hs);
+}
+
+bool ssl_parse_cert_chain(uint8_t *out_alert,
+                          UniquePtr<STACK_OF(CRYPTO_BUFFER)> *out_chain,
+                          UniquePtr<EVP_PKEY> *out_pubkey,
+                          uint8_t *out_leaf_sha256, CBS *cbs,
+                          CRYPTO_BUFFER_POOL *pool) {
+  out_chain->reset();
+  out_pubkey->reset();
+
+  CBS certificate_list;
+  if (!CBS_get_u24_length_prefixed(cbs, &certificate_list)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  if (CBS_len(&certificate_list) == 0) {
+    return true;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain(sk_CRYPTO_BUFFER_new_null());
+  if (!chain) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  UniquePtr<EVP_PKEY> pubkey;
+  while (CBS_len(&certificate_list) > 0) {
+    CBS certificate;
+    if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate) ||
+        CBS_len(&certificate) == 0) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH);
+      return false;
+    }
+
+    if (sk_CRYPTO_BUFFER_num(chain.get()) == 0) {
+      pubkey = ssl_cert_parse_pubkey(&certificate);
+      if (!pubkey) {
+        *out_alert = SSL_AD_DECODE_ERROR;
+        return false;
+      }
+
+      // Retain the hash of the leaf certificate if requested.
+      if (out_leaf_sha256 != NULL) {
+        SHA256(CBS_data(&certificate), CBS_len(&certificate), out_leaf_sha256);
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buf(
+        CRYPTO_BUFFER_new_from_CBS(&certificate, pool));
+    if (!buf ||
+        !PushToStack(chain.get(), std::move(buf))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  *out_chain = std::move(chain);
+  *out_pubkey = std::move(pubkey);
+  return true;
+}
+
+bool ssl_add_cert_chain(SSL_HANDSHAKE *hs, CBB *cbb) {
+  if (!ssl_has_certificate(hs)) {
+    return CBB_add_u24(cbb, 0);
+  }
+
+  CBB certs;
+  if (!CBB_add_u24_length_prefixed(cbb, &certs)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  STACK_OF(CRYPTO_BUFFER) *chain = hs->config->cert->chain.get();
+  for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(chain); i++) {
+    CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(chain, i);
+    CBB child;
+    if (!CBB_add_u24_length_prefixed(&certs, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                       CRYPTO_BUFFER_len(buffer)) ||
+        !CBB_flush(&certs)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+// ssl_cert_skip_to_spki parses a DER-encoded, X.509 certificate from |in| and
+// positions |*out_tbs_cert| to cover the TBSCertificate, starting at the
+// subjectPublicKeyInfo.
+static bool ssl_cert_skip_to_spki(const CBS *in, CBS *out_tbs_cert) {
+  /* From RFC 5280, section 4.1
+   *    Certificate  ::=  SEQUENCE  {
+   *      tbsCertificate       TBSCertificate,
+   *      signatureAlgorithm   AlgorithmIdentifier,
+   *      signatureValue       BIT STRING  }
+
+   * TBSCertificate  ::=  SEQUENCE  {
+   *      version         [0]  EXPLICIT Version DEFAULT v1,
+   *      serialNumber         CertificateSerialNumber,
+   *      signature            AlgorithmIdentifier,
+   *      issuer               Name,
+   *      validity             Validity,
+   *      subject              Name,
+   *      subjectPublicKeyInfo SubjectPublicKeyInfo,
+   *      ... } */
+  CBS buf = *in;
+
+  CBS toplevel;
+  if (!CBS_get_asn1(&buf, &toplevel, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&buf) != 0 ||
+      !CBS_get_asn1(&toplevel, out_tbs_cert, CBS_ASN1_SEQUENCE) ||
+      // version
+      !CBS_get_optional_asn1(
+          out_tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // serialNumber
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_INTEGER) ||
+      // signature algorithm
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // issuer
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // validity
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // subject
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+
+  return true;
+}
+
+UniquePtr<EVP_PKEY> ssl_cert_parse_pubkey(const CBS *in) {
+  CBS buf = *in, tbs_cert;
+  if (!ssl_cert_skip_to_spki(&buf, &tbs_cert)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return nullptr;
+  }
+
+  return UniquePtr<EVP_PKEY>(EVP_parse_public_key(&tbs_cert));
+}
+
+bool ssl_compare_public_and_private_key(const EVP_PKEY *pubkey,
+                                        const EVP_PKEY *privkey) {
+  if (EVP_PKEY_is_opaque(privkey)) {
+    // We cannot check an opaque private key and have to trust that it
+    // matches.
+    return true;
+  }
+
+  switch (EVP_PKEY_cmp(pubkey, privkey)) {
+    case 1:
+      return true;
+    case 0:
+      OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+      return false;
+    case -1:
+      OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+      return false;
+    case -2:
+      OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+      return false;
+  }
+
+  assert(0);
+  return false;
+}
+
+bool ssl_cert_check_private_key(const CERT *cert, const EVP_PKEY *privkey) {
+  if (privkey == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
+    return false;
+  }
+
+  if (cert->chain == nullptr ||
+      sk_CRYPTO_BUFFER_value(cert->chain.get(), 0) == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
+    return false;
+  }
+
+  CBS cert_cbs;
+  CRYPTO_BUFFER_init_CBS(sk_CRYPTO_BUFFER_value(cert->chain.get(), 0),
+                         &cert_cbs);
+  UniquePtr<EVP_PKEY> pubkey = ssl_cert_parse_pubkey(&cert_cbs);
+  if (!pubkey) {
+    OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    return false;
+  }
+
+  return ssl_compare_public_and_private_key(pubkey.get(), privkey);
+}
+
+bool ssl_cert_check_key_usage(const CBS *in, enum ssl_key_usage_t bit) {
+  CBS buf = *in;
+
+  CBS tbs_cert, outer_extensions;
+  int has_extensions;
+  if (!ssl_cert_skip_to_spki(&buf, &tbs_cert) ||
+      // subjectPublicKeyInfo
+      !CBS_get_asn1(&tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // issuerUniqueID
+      !CBS_get_optional_asn1(
+          &tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1) ||
+      // subjectUniqueID
+      !CBS_get_optional_asn1(
+          &tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2) ||
+      !CBS_get_optional_asn1(
+          &tbs_cert, &outer_extensions, &has_extensions,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return false;
+  }
+
+  if (!has_extensions) {
+    return true;
+  }
+
+  CBS extensions;
+  if (!CBS_get_asn1(&outer_extensions, &extensions, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return false;
+  }
+
+  while (CBS_len(&extensions) > 0) {
+    CBS extension, oid, contents;
+    if (!CBS_get_asn1(&extensions, &extension, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&extension, &oid, CBS_ASN1_OBJECT) ||
+        (CBS_peek_asn1_tag(&extension, CBS_ASN1_BOOLEAN) &&
+         !CBS_get_asn1(&extension, NULL, CBS_ASN1_BOOLEAN)) ||
+        !CBS_get_asn1(&extension, &contents, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&extension) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    static const uint8_t kKeyUsageOID[3] = {0x55, 0x1d, 0x0f};
+    if (CBS_len(&oid) != sizeof(kKeyUsageOID) ||
+        OPENSSL_memcmp(CBS_data(&oid), kKeyUsageOID, sizeof(kKeyUsageOID)) !=
+            0) {
+      continue;
+    }
+
+    CBS bit_string;
+    if (!CBS_get_asn1(&contents, &bit_string, CBS_ASN1_BITSTRING) ||
+        CBS_len(&contents) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    // This is the KeyUsage extension. See
+    // https://tools.ietf.org/html/rfc5280#section-4.2.1.3
+    if (!CBS_is_valid_asn1_bitstring(&bit_string)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    if (!CBS_asn1_bitstring_has_bit(&bit_string, bit)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_KEY_USAGE_BIT_INCORRECT);
+      return false;
+    }
+
+    return true;
+  }
+
+  // No KeyUsage extension found.
+  return true;
+}
+
+UniquePtr<STACK_OF(CRYPTO_BUFFER)> ssl_parse_client_CA_list(SSL *ssl,
+                                                            uint8_t *out_alert,
+                                                            CBS *cbs) {
+  CRYPTO_BUFFER_POOL *const pool = ssl->ctx->pool;
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ret(sk_CRYPTO_BUFFER_new_null());
+  if (!ret) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  CBS child;
+  if (!CBS_get_u16_length_prefixed(cbs, &child)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_LENGTH_MISMATCH);
+    return nullptr;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS distinguished_name;
+    if (!CBS_get_u16_length_prefixed(&child, &distinguished_name)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CA_DN_TOO_LONG);
+      return nullptr;
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer(
+        CRYPTO_BUFFER_new_from_CBS(&distinguished_name, pool));
+    if (!buffer ||
+        !PushToStack(ret.get(), std::move(buffer))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+  }
+
+  if (!ssl->ctx->x509_method->check_client_CA_list(ret.get())) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return nullptr;
+  }
+
+  return ret;
+}
+
+bool ssl_has_client_CAs(const SSL_CONFIG *cfg) {
+  const STACK_OF(CRYPTO_BUFFER) *names = cfg->client_CA.get();
+  if (names == nullptr) {
+    names = cfg->ssl->ctx->client_CA.get();
+  }
+  if (names == nullptr) {
+    return false;
+  }
+  return sk_CRYPTO_BUFFER_num(names) > 0;
+}
+
+bool ssl_add_client_CA_list(SSL_HANDSHAKE *hs, CBB *cbb) {
+  CBB child, name_cbb;
+  if (!CBB_add_u16_length_prefixed(cbb, &child)) {
+    return false;
+  }
+
+  const STACK_OF(CRYPTO_BUFFER) *names = hs->config->client_CA.get();
+  if (names == NULL) {
+    names = hs->ssl->ctx->client_CA.get();
+  }
+  if (names == NULL) {
+    return CBB_flush(cbb);
+  }
+
+  for (const CRYPTO_BUFFER *name : names) {
+    if (!CBB_add_u16_length_prefixed(&child, &name_cbb) ||
+        !CBB_add_bytes(&name_cbb, CRYPTO_BUFFER_data(name),
+                       CRYPTO_BUFFER_len(name))) {
+      return false;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+bool ssl_check_leaf_certificate(SSL_HANDSHAKE *hs, EVP_PKEY *pkey,
+                                const CRYPTO_BUFFER *leaf) {
+  assert(ssl_protocol_version(hs->ssl) < TLS1_3_VERSION);
+
+  // Check the certificate's type matches the cipher.
+  if (!(hs->new_cipher->algorithm_auth & ssl_cipher_auth_mask_for_key(pkey))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CERTIFICATE_TYPE);
+    return false;
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) {
+    // Check the key's group and point format are acceptable.
+    EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
+    uint16_t group_id;
+    if (!ssl_nid_to_group_id(
+            &group_id, EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key))) ||
+        !tls1_check_group_id(hs, group_id) ||
+        EC_KEY_get_conv_form(ec_key) != POINT_CONVERSION_UNCOMPRESSED) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECC_CERT);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool ssl_on_certificate_selected(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl_has_certificate(hs)) {
+    // Nothing to do.
+    return true;
+  }
+
+  if (!ssl->ctx->x509_method->ssl_auto_chain_if_needed(hs)) {
+    return false;
+  }
+
+  CBS leaf;
+  CRYPTO_BUFFER_init_CBS(
+      sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0), &leaf);
+
+  if (ssl_signing_with_dc(hs)) {
+    hs->local_pubkey = UpRef(hs->config->cert->dc->pkey);
+  } else {
+    hs->local_pubkey = ssl_cert_parse_pubkey(&leaf);
+  }
+  return hs->local_pubkey != NULL;
+}
+
+
+// Delegated credentials.
+
+DC::DC() = default;
+DC::~DC() = default;
+
+UniquePtr<DC> DC::Dup() {
+  bssl::UniquePtr<DC> ret = MakeUnique<DC>();
+  if (!ret) {
+    return nullptr;
+  }
+
+  ret->raw = UpRef(raw);
+  ret->expected_cert_verify_algorithm = expected_cert_verify_algorithm;
+  ret->pkey = UpRef(pkey);
+  return ret;
+}
+
+// static
+UniquePtr<DC> DC::Parse(CRYPTO_BUFFER *in, uint8_t *out_alert) {
+  UniquePtr<DC> dc = MakeUnique<DC>();
+  if (!dc) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return nullptr;
+  }
+
+  dc->raw = UpRef(in);
+
+  CBS pubkey, deleg, sig;
+  uint32_t valid_time;
+  uint16_t algorithm;
+  CRYPTO_BUFFER_init_CBS(dc->raw.get(), &deleg);
+  if (!CBS_get_u32(&deleg, &valid_time) ||
+      !CBS_get_u16(&deleg, &dc->expected_cert_verify_algorithm) ||
+      !CBS_get_u24_length_prefixed(&deleg, &pubkey) ||
+      !CBS_get_u16(&deleg, &algorithm) ||
+      !CBS_get_u16_length_prefixed(&deleg, &sig) ||
+      CBS_len(&deleg) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return nullptr;
+  }
+
+  dc->pkey.reset(EVP_parse_public_key(&pubkey));
+  if (dc->pkey == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return nullptr;
+  }
+
+  return dc;
+}
+
+// ssl_can_serve_dc returns true if the host has configured a DC that it can
+// serve in the handshake. Specifically, it checks that a DC has been
+// configured and that the DC signature algorithm is supported by the peer.
+static bool ssl_can_serve_dc(const SSL_HANDSHAKE *hs) {
+  // Check that a DC has been configured.
+  const CERT *cert = hs->config->cert.get();
+  if (cert->dc == nullptr ||
+      cert->dc->raw == nullptr ||
+      (cert->dc_privatekey == nullptr && cert->dc_key_method == nullptr)) {
+    return false;
+  }
+
+  // Check that 1.3 or higher has been negotiated.
+  const DC *dc = cert->dc.get();
+  assert(hs->ssl->s3->have_version);
+  if (ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    return false;
+  }
+
+  // Check that the DC signature algorithm is supported by the peer.
+  Span<const uint16_t> peer_sigalgs = tls1_get_peer_verify_algorithms(hs);
+  bool sigalg_found = false;
+  for (uint16_t peer_sigalg : peer_sigalgs) {
+    if (dc->expected_cert_verify_algorithm == peer_sigalg) {
+      sigalg_found = true;
+      break;
+    }
+  }
+
+  return sigalg_found;
+}
+
+bool ssl_signing_with_dc(const SSL_HANDSHAKE *hs) {
+  // As of draft-ietf-tls-subcert-03, only the server may use delegated
+  // credentials to authenticate itself.
+  return hs->ssl->server &&
+         hs->delegated_credential_requested &&
+         ssl_can_serve_dc(hs);
+}
+
+static int cert_set_dc(CERT *cert, CRYPTO_BUFFER *const raw, EVP_PKEY *privkey,
+                       const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (privkey == nullptr && key_method == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (privkey != nullptr && key_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD);
+    return 0;
+  }
+
+  uint8_t alert;
+  UniquePtr<DC> dc = DC::Parse(raw, &alert);
+  if (dc == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_DELEGATED_CREDENTIAL);
+    return 0;
+  }
+
+  if (privkey) {
+    // Check that the public and private keys match.
+    if (!ssl_compare_public_and_private_key(dc->pkey.get(), privkey)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH);
+      return 0;
+    }
+  }
+
+  cert->dc = std::move(dc);
+  cert->dc_privatekey = UpRef(privkey);
+  cert->dc_key_method = key_method;
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_set_chain_and_key(SSL *ssl, CRYPTO_BUFFER *const *certs,
+                          size_t num_certs, EVP_PKEY *privkey,
+                          const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return cert_set_chain_and_key(ssl->config->cert.get(), certs, num_certs,
+                                privkey, privkey_method);
+}
+
+int SSL_CTX_set_chain_and_key(SSL_CTX *ctx, CRYPTO_BUFFER *const *certs,
+                              size_t num_certs, EVP_PKEY *privkey,
+                              const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  return cert_set_chain_and_key(ctx->cert.get(), certs, num_certs, privkey,
+                                privkey_method);
+}
+
+int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, size_t der_len,
+                                 const uint8_t *der) {
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(der, der_len, NULL));
+  if (!buffer) {
+    return 0;
+  }
+
+  return ssl_set_cert(ctx->cert.get(), std::move(buffer));
+}
+
+int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *der, size_t der_len) {
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(der, der_len, NULL));
+  if (!buffer || !ssl->config) {
+    return 0;
+  }
+
+  return ssl_set_cert(ssl->config->cert.get(), std::move(buffer));
+}
+
+void SSL_CTX_set_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, void *arg),
+                         void *arg) {
+  ssl_cert_set_cert_cb(ctx->cert.get(), cb, arg);
+}
+
+void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg), void *arg) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl_cert_set_cert_cb(ssl->config->cert.get(), cb, arg);
+}
+
+const STACK_OF(CRYPTO_BUFFER) *SSL_get0_peer_certificates(const SSL *ssl) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+
+  return session->certs.get();
+}
+
+const STACK_OF(CRYPTO_BUFFER) *SSL_get0_server_requested_CAs(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return NULL;
+  }
+  return ssl->s3->hs->ca_names.get();
+}
+
+static int set_signed_cert_timestamp_list(CERT *cert, const uint8_t *list,
+                                          size_t list_len) {
+  CBS sct_list;
+  CBS_init(&sct_list, list, list_len);
+  if (!ssl_is_sct_list_valid(&sct_list)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SCT_LIST);
+    return 0;
+  }
+
+  cert->signed_cert_timestamp_list.reset(
+      CRYPTO_BUFFER_new(CBS_data(&sct_list), CBS_len(&sct_list), nullptr));
+  return cert->signed_cert_timestamp_list != nullptr;
+}
+
+int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx, const uint8_t *list,
+                                           size_t list_len) {
+  return set_signed_cert_timestamp_list(ctx->cert.get(), list, list_len);
+}
+
+int SSL_set_signed_cert_timestamp_list(SSL *ssl, const uint8_t *list,
+                                       size_t list_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_signed_cert_timestamp_list(ssl->config->cert.get(), list,
+                                        list_len);
+}
+
+int SSL_CTX_set_ocsp_response(SSL_CTX *ctx, const uint8_t *response,
+                              size_t response_len) {
+  ctx->cert->ocsp_response.reset(
+      CRYPTO_BUFFER_new(response, response_len, nullptr));
+  return ctx->cert->ocsp_response != nullptr;
+}
+
+int SSL_set_ocsp_response(SSL *ssl, const uint8_t *response,
+                          size_t response_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  ssl->config->cert->ocsp_response.reset(
+      CRYPTO_BUFFER_new(response, response_len, nullptr));
+  return ssl->config->cert->ocsp_response != nullptr;
+}
+
+void SSL_CTX_set0_client_CAs(SSL_CTX *ctx, STACK_OF(CRYPTO_BUFFER) *name_list) {
+  ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx);
+  ctx->client_CA.reset(name_list);
+}
+
+void SSL_set0_client_CAs(SSL *ssl, STACK_OF(CRYPTO_BUFFER) *name_list) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl->config.get());
+  ssl->config->client_CA.reset(name_list);
+}
+
+int SSL_set1_delegated_credential(SSL *ssl, CRYPTO_BUFFER *dc, EVP_PKEY *pkey,
+                                  const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (!ssl->config) {
+    return 0;
+  }
+
+  return cert_set_dc(ssl->config->cert.get(), dc, pkey, key_method);
+}
+
+int SSL_delegated_credential_used(const SSL *ssl) {
+  return ssl->s3->delegated_credential_used;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc.grpc_back
new file mode 100644
index 0000000..4f80382
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cert.cc.grpc_back	
@@ -0,0 +1,1015 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+#include <openssl/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+CERT::CERT(const SSL_X509_METHOD *x509_method_arg)
+    : x509_method(x509_method_arg) {}
+
+CERT::~CERT() {
+  ssl_cert_clear_certs(this);
+  x509_method->cert_free(this);
+}
+
+static CRYPTO_BUFFER *buffer_up_ref(CRYPTO_BUFFER *buffer) {
+  CRYPTO_BUFFER_up_ref(buffer);
+  return buffer;
+}
+
+UniquePtr<CERT> ssl_cert_dup(CERT *cert) {
+  UniquePtr<CERT> ret = MakeUnique<CERT>(cert->x509_method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  if (cert->chain) {
+    ret->chain.reset(sk_CRYPTO_BUFFER_deep_copy(
+        cert->chain.get(), buffer_up_ref, CRYPTO_BUFFER_free));
+    if (!ret->chain) {
+      return nullptr;
+    }
+  }
+
+  ret->privatekey = UpRef(cert->privatekey);
+  ret->key_method = cert->key_method;
+
+  if (!ret->sigalgs.CopyFrom(cert->sigalgs)) {
+    return nullptr;
+  }
+
+  ret->cert_cb = cert->cert_cb;
+  ret->cert_cb_arg = cert->cert_cb_arg;
+
+  ret->x509_method->cert_dup(ret.get(), cert);
+
+  ret->signed_cert_timestamp_list = UpRef(cert->signed_cert_timestamp_list);
+  ret->ocsp_response = UpRef(cert->ocsp_response);
+
+  ret->sid_ctx_length = cert->sid_ctx_length;
+  OPENSSL_memcpy(ret->sid_ctx, cert->sid_ctx, sizeof(ret->sid_ctx));
+
+  if (cert->dc) {
+    ret->dc = cert->dc->Dup();
+    if (!ret->dc) {
+       return nullptr;
+    }
+  }
+
+  ret->dc_privatekey = UpRef(cert->dc_privatekey);
+  ret->dc_key_method = cert->dc_key_method;
+
+  return ret;
+}
+
+// Free up and clear all certificates and chains
+void ssl_cert_clear_certs(CERT *cert) {
+  if (cert == NULL) {
+    return;
+  }
+
+  cert->x509_method->cert_clear(cert);
+
+  cert->chain.reset();
+  cert->privatekey.reset();
+  cert->key_method = nullptr;
+
+  cert->dc.reset();
+  cert->dc_privatekey.reset();
+  cert->dc_key_method = nullptr;
+}
+
+static void ssl_cert_set_cert_cb(CERT *cert, int (*cb)(SSL *ssl, void *arg),
+                                 void *arg) {
+  cert->cert_cb = cb;
+  cert->cert_cb_arg = arg;
+}
+
+enum leaf_cert_and_privkey_result_t {
+  leaf_cert_and_privkey_error,
+  leaf_cert_and_privkey_ok,
+  leaf_cert_and_privkey_mismatch,
+};
+
+// check_leaf_cert_and_privkey checks whether the certificate in |leaf_buffer|
+// and the private key in |privkey| are suitable and coherent. It returns
+// |leaf_cert_and_privkey_error| and pushes to the error queue if a problem is
+// found. If the certificate and private key are valid, but incoherent, it
+// returns |leaf_cert_and_privkey_mismatch|. Otherwise it returns
+// |leaf_cert_and_privkey_ok|.
+static enum leaf_cert_and_privkey_result_t check_leaf_cert_and_privkey(
+    CRYPTO_BUFFER *leaf_buffer, EVP_PKEY *privkey) {
+  CBS cert_cbs;
+  CRYPTO_BUFFER_init_CBS(leaf_buffer, &cert_cbs);
+  UniquePtr<EVP_PKEY> pubkey = ssl_cert_parse_pubkey(&cert_cbs);
+  if (!pubkey) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return leaf_cert_and_privkey_error;
+  }
+
+  if (!ssl_is_key_type_supported(pubkey->type)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return leaf_cert_and_privkey_error;
+  }
+
+  // An ECC certificate may be usable for ECDH or ECDSA. We only support ECDSA
+  // certificates, so sanity-check the key usage extension.
+  if (pubkey->type == EVP_PKEY_EC &&
+      !ssl_cert_check_key_usage(&cert_cbs, key_usage_digital_signature)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return leaf_cert_and_privkey_error;
+  }
+
+  if (privkey != NULL &&
+      // Sanity-check that the private key and the certificate match.
+      !ssl_compare_public_and_private_key(pubkey.get(), privkey)) {
+    ERR_clear_error();
+    return leaf_cert_and_privkey_mismatch;
+  }
+
+  return leaf_cert_and_privkey_ok;
+}
+
+static int cert_set_chain_and_key(
+    CERT *cert, CRYPTO_BUFFER *const *certs, size_t num_certs,
+    EVP_PKEY *privkey, const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  if (num_certs == 0 ||
+      (privkey == NULL && privkey_method == NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (privkey != NULL && privkey_method != NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD);
+    return 0;
+  }
+
+  switch (check_leaf_cert_and_privkey(certs[0], privkey)) {
+    case leaf_cert_and_privkey_error:
+      return 0;
+    case leaf_cert_and_privkey_mismatch:
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH);
+      return 0;
+    case leaf_cert_and_privkey_ok:
+      break;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs_sk(sk_CRYPTO_BUFFER_new_null());
+  if (!certs_sk) {
+    return 0;
+  }
+
+  for (size_t i = 0; i < num_certs; i++) {
+    if (!PushToStack(certs_sk.get(), UpRef(certs[i]))) {
+      return 0;
+    }
+  }
+
+  cert->privatekey = UpRef(privkey);
+  cert->key_method = privkey_method;
+
+  cert->chain = std::move(certs_sk);
+  return 1;
+}
+
+bool ssl_set_cert(CERT *cert, UniquePtr<CRYPTO_BUFFER> buffer) {
+  switch (check_leaf_cert_and_privkey(buffer.get(), cert->privatekey.get())) {
+    case leaf_cert_and_privkey_error:
+      return false;
+    case leaf_cert_and_privkey_mismatch:
+      // don't fail for a cert/key mismatch, just free current private key
+      // (when switching to a different cert & key, first this function should
+      // be used, then |ssl_set_pkey|.
+      cert->privatekey.reset();
+      break;
+    case leaf_cert_and_privkey_ok:
+      break;
+  }
+
+  cert->x509_method->cert_flush_cached_leaf(cert);
+
+  if (cert->chain != nullptr) {
+    CRYPTO_BUFFER_free(sk_CRYPTO_BUFFER_value(cert->chain.get(), 0));
+    sk_CRYPTO_BUFFER_set(cert->chain.get(), 0, buffer.release());
+    return true;
+  }
+
+  cert->chain.reset(sk_CRYPTO_BUFFER_new_null());
+  if (cert->chain == nullptr) {
+    return false;
+  }
+
+  if (!PushToStack(cert->chain.get(), std::move(buffer))) {
+    cert->chain.reset();
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_has_certificate(const SSL_HANDSHAKE *hs) {
+  return hs->config->cert->chain != nullptr &&
+         sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0) != nullptr &&
+         ssl_has_private_key(hs);
+}
+
+bool ssl_parse_cert_chain(uint8_t *out_alert,
+                          UniquePtr<STACK_OF(CRYPTO_BUFFER)> *out_chain,
+                          UniquePtr<EVP_PKEY> *out_pubkey,
+                          uint8_t *out_leaf_sha256, CBS *cbs,
+                          CRYPTO_BUFFER_POOL *pool) {
+  out_chain->reset();
+  out_pubkey->reset();
+
+  CBS certificate_list;
+  if (!CBS_get_u24_length_prefixed(cbs, &certificate_list)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  if (CBS_len(&certificate_list) == 0) {
+    return true;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain(sk_CRYPTO_BUFFER_new_null());
+  if (!chain) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  UniquePtr<EVP_PKEY> pubkey;
+  while (CBS_len(&certificate_list) > 0) {
+    CBS certificate;
+    if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate) ||
+        CBS_len(&certificate) == 0) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH);
+      return false;
+    }
+
+    if (sk_CRYPTO_BUFFER_num(chain.get()) == 0) {
+      pubkey = ssl_cert_parse_pubkey(&certificate);
+      if (!pubkey) {
+        *out_alert = SSL_AD_DECODE_ERROR;
+        return false;
+      }
+
+      // Retain the hash of the leaf certificate if requested.
+      if (out_leaf_sha256 != NULL) {
+        SHA256(CBS_data(&certificate), CBS_len(&certificate), out_leaf_sha256);
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buf(
+        CRYPTO_BUFFER_new_from_CBS(&certificate, pool));
+    if (!buf ||
+        !PushToStack(chain.get(), std::move(buf))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  *out_chain = std::move(chain);
+  *out_pubkey = std::move(pubkey);
+  return true;
+}
+
+bool ssl_add_cert_chain(SSL_HANDSHAKE *hs, CBB *cbb) {
+  if (!ssl_has_certificate(hs)) {
+    return CBB_add_u24(cbb, 0);
+  }
+
+  CBB certs;
+  if (!CBB_add_u24_length_prefixed(cbb, &certs)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  STACK_OF(CRYPTO_BUFFER) *chain = hs->config->cert->chain.get();
+  for (size_t i = 0; i < sk_CRYPTO_BUFFER_num(chain); i++) {
+    CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(chain, i);
+    CBB child;
+    if (!CBB_add_u24_length_prefixed(&certs, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(buffer),
+                       CRYPTO_BUFFER_len(buffer)) ||
+        !CBB_flush(&certs)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+// ssl_cert_skip_to_spki parses a DER-encoded, X.509 certificate from |in| and
+// positions |*out_tbs_cert| to cover the TBSCertificate, starting at the
+// subjectPublicKeyInfo.
+static bool ssl_cert_skip_to_spki(const CBS *in, CBS *out_tbs_cert) {
+  /* From RFC 5280, section 4.1
+   *    Certificate  ::=  SEQUENCE  {
+   *      tbsCertificate       TBSCertificate,
+   *      signatureAlgorithm   AlgorithmIdentifier,
+   *      signatureValue       BIT STRING  }
+
+   * TBSCertificate  ::=  SEQUENCE  {
+   *      version         [0]  EXPLICIT Version DEFAULT v1,
+   *      serialNumber         CertificateSerialNumber,
+   *      signature            AlgorithmIdentifier,
+   *      issuer               Name,
+   *      validity             Validity,
+   *      subject              Name,
+   *      subjectPublicKeyInfo SubjectPublicKeyInfo,
+   *      ... } */
+  CBS buf = *in;
+
+  CBS toplevel;
+  if (!CBS_get_asn1(&buf, &toplevel, CBS_ASN1_SEQUENCE) ||
+      CBS_len(&buf) != 0 ||
+      !CBS_get_asn1(&toplevel, out_tbs_cert, CBS_ASN1_SEQUENCE) ||
+      // version
+      !CBS_get_optional_asn1(
+          out_tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 0) ||
+      // serialNumber
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_INTEGER) ||
+      // signature algorithm
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // issuer
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // validity
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // subject
+      !CBS_get_asn1(out_tbs_cert, NULL, CBS_ASN1_SEQUENCE)) {
+    return false;
+  }
+
+  return true;
+}
+
+UniquePtr<EVP_PKEY> ssl_cert_parse_pubkey(const CBS *in) {
+  CBS buf = *in, tbs_cert;
+  if (!ssl_cert_skip_to_spki(&buf, &tbs_cert)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return nullptr;
+  }
+
+  return UniquePtr<EVP_PKEY>(EVP_parse_public_key(&tbs_cert));
+}
+
+bool ssl_compare_public_and_private_key(const EVP_PKEY *pubkey,
+                                        const EVP_PKEY *privkey) {
+  if (EVP_PKEY_is_opaque(privkey)) {
+    // We cannot check an opaque private key and have to trust that it
+    // matches.
+    return true;
+  }
+
+  switch (EVP_PKEY_cmp(pubkey, privkey)) {
+    case 1:
+      return true;
+    case 0:
+      OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
+      return false;
+    case -1:
+      OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
+      return false;
+    case -2:
+      OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+      return false;
+  }
+
+  assert(0);
+  return false;
+}
+
+bool ssl_cert_check_private_key(const CERT *cert, const EVP_PKEY *privkey) {
+  if (privkey == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
+    return false;
+  }
+
+  if (cert->chain == nullptr ||
+      sk_CRYPTO_BUFFER_value(cert->chain.get(), 0) == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
+    return false;
+  }
+
+  CBS cert_cbs;
+  CRYPTO_BUFFER_init_CBS(sk_CRYPTO_BUFFER_value(cert->chain.get(), 0),
+                         &cert_cbs);
+  UniquePtr<EVP_PKEY> pubkey = ssl_cert_parse_pubkey(&cert_cbs);
+  if (!pubkey) {
+    OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
+    return false;
+  }
+
+  return ssl_compare_public_and_private_key(pubkey.get(), privkey);
+}
+
+bool ssl_cert_check_key_usage(const CBS *in, enum ssl_key_usage_t bit) {
+  CBS buf = *in;
+
+  CBS tbs_cert, outer_extensions;
+  int has_extensions;
+  if (!ssl_cert_skip_to_spki(&buf, &tbs_cert) ||
+      // subjectPublicKeyInfo
+      !CBS_get_asn1(&tbs_cert, NULL, CBS_ASN1_SEQUENCE) ||
+      // issuerUniqueID
+      !CBS_get_optional_asn1(
+          &tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 1) ||
+      // subjectUniqueID
+      !CBS_get_optional_asn1(
+          &tbs_cert, NULL, NULL,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 2) ||
+      !CBS_get_optional_asn1(
+          &tbs_cert, &outer_extensions, &has_extensions,
+          CBS_ASN1_CONSTRUCTED | CBS_ASN1_CONTEXT_SPECIFIC | 3)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return false;
+  }
+
+  if (!has_extensions) {
+    return true;
+  }
+
+  CBS extensions;
+  if (!CBS_get_asn1(&outer_extensions, &extensions, CBS_ASN1_SEQUENCE)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+    return false;
+  }
+
+  while (CBS_len(&extensions) > 0) {
+    CBS extension, oid, contents;
+    if (!CBS_get_asn1(&extensions, &extension, CBS_ASN1_SEQUENCE) ||
+        !CBS_get_asn1(&extension, &oid, CBS_ASN1_OBJECT) ||
+        (CBS_peek_asn1_tag(&extension, CBS_ASN1_BOOLEAN) &&
+         !CBS_get_asn1(&extension, NULL, CBS_ASN1_BOOLEAN)) ||
+        !CBS_get_asn1(&extension, &contents, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&extension) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    static const uint8_t kKeyUsageOID[3] = {0x55, 0x1d, 0x0f};
+    if (CBS_len(&oid) != sizeof(kKeyUsageOID) ||
+        OPENSSL_memcmp(CBS_data(&oid), kKeyUsageOID, sizeof(kKeyUsageOID)) !=
+            0) {
+      continue;
+    }
+
+    CBS bit_string;
+    if (!CBS_get_asn1(&contents, &bit_string, CBS_ASN1_BITSTRING) ||
+        CBS_len(&contents) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    // This is the KeyUsage extension. See
+    // https://tools.ietf.org/html/rfc5280#section-4.2.1.3
+    if (!CBS_is_valid_asn1_bitstring(&bit_string)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_PARSE_LEAF_CERT);
+      return false;
+    }
+
+    if (!CBS_asn1_bitstring_has_bit(&bit_string, bit)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_KEY_USAGE_BIT_INCORRECT);
+      return false;
+    }
+
+    return true;
+  }
+
+  // No KeyUsage extension found.
+  return true;
+}
+
+UniquePtr<STACK_OF(CRYPTO_BUFFER)> ssl_parse_client_CA_list(SSL *ssl,
+                                                            uint8_t *out_alert,
+                                                            CBS *cbs) {
+  CRYPTO_BUFFER_POOL *const pool = ssl->ctx->pool;
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> ret(sk_CRYPTO_BUFFER_new_null());
+  if (!ret) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return nullptr;
+  }
+
+  CBS child;
+  if (!CBS_get_u16_length_prefixed(cbs, &child)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_LENGTH_MISMATCH);
+    return nullptr;
+  }
+
+  while (CBS_len(&child) > 0) {
+    CBS distinguished_name;
+    if (!CBS_get_u16_length_prefixed(&child, &distinguished_name)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CA_DN_TOO_LONG);
+      return nullptr;
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer(
+        CRYPTO_BUFFER_new_from_CBS(&distinguished_name, pool));
+    if (!buffer ||
+        !PushToStack(ret.get(), std::move(buffer))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return nullptr;
+    }
+  }
+
+  if (!ssl->ctx->x509_method->check_client_CA_list(ret.get())) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return nullptr;
+  }
+
+  return ret;
+}
+
+bool ssl_has_client_CAs(const SSL_CONFIG *cfg) {
+  const STACK_OF(CRYPTO_BUFFER) *names = cfg->client_CA.get();
+  if (names == nullptr) {
+    names = cfg->ssl->ctx->client_CA.get();
+  }
+  if (names == nullptr) {
+    return false;
+  }
+  return sk_CRYPTO_BUFFER_num(names) > 0;
+}
+
+bool ssl_add_client_CA_list(SSL_HANDSHAKE *hs, CBB *cbb) {
+  CBB child, name_cbb;
+  if (!CBB_add_u16_length_prefixed(cbb, &child)) {
+    return false;
+  }
+
+  const STACK_OF(CRYPTO_BUFFER) *names = hs->config->client_CA.get();
+  if (names == NULL) {
+    names = hs->ssl->ctx->client_CA.get();
+  }
+  if (names == NULL) {
+    return CBB_flush(cbb);
+  }
+
+  for (const CRYPTO_BUFFER *name : names) {
+    if (!CBB_add_u16_length_prefixed(&child, &name_cbb) ||
+        !CBB_add_bytes(&name_cbb, CRYPTO_BUFFER_data(name),
+                       CRYPTO_BUFFER_len(name))) {
+      return false;
+    }
+  }
+
+  return CBB_flush(cbb);
+}
+
+bool ssl_check_leaf_certificate(SSL_HANDSHAKE *hs, EVP_PKEY *pkey,
+                                const CRYPTO_BUFFER *leaf) {
+  assert(ssl_protocol_version(hs->ssl) < TLS1_3_VERSION);
+
+  // Check the certificate's type matches the cipher.
+  if (!(hs->new_cipher->algorithm_auth & ssl_cipher_auth_mask_for_key(pkey))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CERTIFICATE_TYPE);
+    return false;
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) {
+    // Check the key's group and point format are acceptable.
+    EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
+    uint16_t group_id;
+    if (!ssl_nid_to_group_id(
+            &group_id, EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key))) ||
+        !tls1_check_group_id(hs, group_id) ||
+        EC_KEY_get_conv_form(ec_key) != POINT_CONVERSION_UNCOMPRESSED) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECC_CERT);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool ssl_on_certificate_selected(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl_has_certificate(hs)) {
+    // Nothing to do.
+    return true;
+  }
+
+  if (!ssl->ctx->x509_method->ssl_auto_chain_if_needed(hs)) {
+    return false;
+  }
+
+  CBS leaf;
+  CRYPTO_BUFFER_init_CBS(
+      sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0), &leaf);
+
+  if (ssl_signing_with_dc(hs)) {
+    hs->local_pubkey = UpRef(hs->config->cert->dc->pkey);
+  } else {
+    hs->local_pubkey = ssl_cert_parse_pubkey(&leaf);
+  }
+  return hs->local_pubkey != NULL;
+}
+
+
+// Delegated credentials.
+
+DC::DC() = default;
+DC::~DC() = default;
+
+UniquePtr<DC> DC::Dup() {
+  bssl::UniquePtr<DC> ret = MakeUnique<DC>();
+  if (!ret) {
+    return nullptr;
+  }
+
+  ret->raw = UpRef(raw);
+  ret->expected_cert_verify_algorithm = expected_cert_verify_algorithm;
+  ret->pkey = UpRef(pkey);
+  return ret;
+}
+
+// static
+UniquePtr<DC> DC::Parse(CRYPTO_BUFFER *in, uint8_t *out_alert) {
+  UniquePtr<DC> dc = MakeUnique<DC>();
+  if (!dc) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return nullptr;
+  }
+
+  dc->raw = UpRef(in);
+
+  CBS pubkey, deleg, sig;
+  uint32_t valid_time;
+  uint16_t algorithm;
+  CRYPTO_BUFFER_init_CBS(dc->raw.get(), &deleg);
+  if (!CBS_get_u32(&deleg, &valid_time) ||
+      !CBS_get_u16(&deleg, &dc->expected_cert_verify_algorithm) ||
+      !CBS_get_u24_length_prefixed(&deleg, &pubkey) ||
+      !CBS_get_u16(&deleg, &algorithm) ||
+      !CBS_get_u16_length_prefixed(&deleg, &sig) ||
+      CBS_len(&deleg) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return nullptr;
+  }
+
+  dc->pkey.reset(EVP_parse_public_key(&pubkey));
+  if (dc->pkey == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return nullptr;
+  }
+
+  return dc;
+}
+
+// ssl_can_serve_dc returns true if the host has configured a DC that it can
+// serve in the handshake. Specifically, it checks that a DC has been
+// configured and that the DC signature algorithm is supported by the peer.
+static bool ssl_can_serve_dc(const SSL_HANDSHAKE *hs) {
+  // Check that a DC has been configured.
+  const CERT *cert = hs->config->cert.get();
+  if (cert->dc == nullptr ||
+      cert->dc->raw == nullptr ||
+      (cert->dc_privatekey == nullptr && cert->dc_key_method == nullptr)) {
+    return false;
+  }
+
+  // Check that 1.3 or higher has been negotiated.
+  const DC *dc = cert->dc.get();
+  assert(hs->ssl->s3->have_version);
+  if (ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    return false;
+  }
+
+  // Check that the DC signature algorithm is supported by the peer.
+  Span<const uint16_t> peer_sigalgs = tls1_get_peer_verify_algorithms(hs);
+  bool sigalg_found = false;
+  for (uint16_t peer_sigalg : peer_sigalgs) {
+    if (dc->expected_cert_verify_algorithm == peer_sigalg) {
+      sigalg_found = true;
+      break;
+    }
+  }
+
+  return sigalg_found;
+}
+
+bool ssl_signing_with_dc(const SSL_HANDSHAKE *hs) {
+  // As of draft-ietf-tls-subcert-03, only the server may use delegated
+  // credentials to authenticate itself.
+  return hs->ssl->server &&
+         hs->delegated_credential_requested &&
+         ssl_can_serve_dc(hs);
+}
+
+static int cert_set_dc(CERT *cert, CRYPTO_BUFFER *const raw, EVP_PKEY *privkey,
+                       const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (privkey == nullptr && key_method == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  if (privkey != nullptr && key_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CANNOT_HAVE_BOTH_PRIVKEY_AND_METHOD);
+    return 0;
+  }
+
+  uint8_t alert;
+  UniquePtr<DC> dc = DC::Parse(raw, &alert);
+  if (dc == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_DELEGATED_CREDENTIAL);
+    return 0;
+  }
+
+  if (privkey) {
+    // Check that the public and private keys match.
+    if (!ssl_compare_public_and_private_key(dc->pkey.get(), privkey)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_AND_PRIVATE_KEY_MISMATCH);
+      return 0;
+    }
+  }
+
+  cert->dc = std::move(dc);
+  cert->dc_privatekey = UpRef(privkey);
+  cert->dc_key_method = key_method;
+
+  return 1;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_set_chain_and_key(SSL *ssl, CRYPTO_BUFFER *const *certs,
+                          size_t num_certs, EVP_PKEY *privkey,
+                          const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return cert_set_chain_and_key(ssl->config->cert.get(), certs, num_certs,
+                                privkey, privkey_method);
+}
+
+int SSL_CTX_set_chain_and_key(SSL_CTX *ctx, CRYPTO_BUFFER *const *certs,
+                              size_t num_certs, EVP_PKEY *privkey,
+                              const SSL_PRIVATE_KEY_METHOD *privkey_method) {
+  return cert_set_chain_and_key(ctx->cert.get(), certs, num_certs, privkey,
+                                privkey_method);
+}
+
+int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, size_t der_len,
+                                 const uint8_t *der) {
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(der, der_len, NULL));
+  if (!buffer) {
+    return 0;
+  }
+
+  return ssl_set_cert(ctx->cert.get(), std::move(buffer));
+}
+
+int SSL_use_certificate_ASN1(SSL *ssl, const uint8_t *der, size_t der_len) {
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(der, der_len, NULL));
+  if (!buffer || !ssl->config) {
+    return 0;
+  }
+
+  return ssl_set_cert(ssl->config->cert.get(), std::move(buffer));
+}
+
+void SSL_CTX_set_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl, void *arg),
+                         void *arg) {
+  ssl_cert_set_cert_cb(ctx->cert.get(), cb, arg);
+}
+
+void SSL_set_cert_cb(SSL *ssl, int (*cb)(SSL *ssl, void *arg), void *arg) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl_cert_set_cert_cb(ssl->config->cert.get(), cb, arg);
+}
+
+const STACK_OF(CRYPTO_BUFFER) *SSL_get0_peer_certificates(const SSL *ssl) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+
+  return session->certs.get();
+}
+
+const STACK_OF(CRYPTO_BUFFER) *SSL_get0_server_requested_CAs(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return NULL;
+  }
+  return ssl->s3->hs->ca_names.get();
+}
+
+static int set_signed_cert_timestamp_list(CERT *cert, const uint8_t *list,
+                                          size_t list_len) {
+  CBS sct_list;
+  CBS_init(&sct_list, list, list_len);
+  if (!ssl_is_sct_list_valid(&sct_list)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SCT_LIST);
+    return 0;
+  }
+
+  cert->signed_cert_timestamp_list.reset(
+      CRYPTO_BUFFER_new(CBS_data(&sct_list), CBS_len(&sct_list), nullptr));
+  return cert->signed_cert_timestamp_list != nullptr;
+}
+
+int SSL_CTX_set_signed_cert_timestamp_list(SSL_CTX *ctx, const uint8_t *list,
+                                           size_t list_len) {
+  return set_signed_cert_timestamp_list(ctx->cert.get(), list, list_len);
+}
+
+int SSL_set_signed_cert_timestamp_list(SSL *ssl, const uint8_t *list,
+                                       size_t list_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_signed_cert_timestamp_list(ssl->config->cert.get(), list,
+                                        list_len);
+}
+
+int SSL_CTX_set_ocsp_response(SSL_CTX *ctx, const uint8_t *response,
+                              size_t response_len) {
+  ctx->cert->ocsp_response.reset(
+      CRYPTO_BUFFER_new(response, response_len, nullptr));
+  return ctx->cert->ocsp_response != nullptr;
+}
+
+int SSL_set_ocsp_response(SSL *ssl, const uint8_t *response,
+                          size_t response_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  ssl->config->cert->ocsp_response.reset(
+      CRYPTO_BUFFER_new(response, response_len, nullptr));
+  return ssl->config->cert->ocsp_response != nullptr;
+}
+
+void SSL_CTX_set0_client_CAs(SSL_CTX *ctx, STACK_OF(CRYPTO_BUFFER) *name_list) {
+  ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx);
+  ctx->client_CA.reset(name_list);
+}
+
+void SSL_set0_client_CAs(SSL *ssl, STACK_OF(CRYPTO_BUFFER) *name_list) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl->config.get());
+  ssl->config->client_CA.reset(name_list);
+}
+
+int SSL_set1_delegated_credential(SSL *ssl, CRYPTO_BUFFER *dc, EVP_PKEY *pkey,
+                                  const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (!ssl->config) {
+    return 0;
+  }
+
+  return cert_set_dc(ssl->config->cert.get(), dc, pkey, key_method);
+}
+
+int SSL_delegated_credential_used(const SSL *ssl) {
+  return ssl->s3->delegated_credential_used;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc
new file mode 100644
index 0000000..46f328e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc	
@@ -0,0 +1,1718 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/stack.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static constexpr SSL_CIPHER kCiphers[] = {
+    // The RSA ciphers
+    // Cipher 02
+    {
+     SSL3_TXT_RSA_NULL_SHA,
+     "TLS_RSA_WITH_NULL_SHA",
+     SSL3_CK_RSA_NULL_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_eNULL,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 0A
+    {
+     SSL3_TXT_RSA_DES_192_CBC3_SHA,
+     "TLS_RSA_WITH_3DES_EDE_CBC_SHA",
+     SSL3_CK_RSA_DES_192_CBC3_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_3DES,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+
+    // New AES ciphersuites
+
+    // Cipher 2F
+    {
+     TLS1_TXT_RSA_WITH_AES_128_SHA,
+     "TLS_RSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_RSA_WITH_AES_128_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 35
+    {
+     TLS1_TXT_RSA_WITH_AES_256_SHA,
+     "TLS_RSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_RSA_WITH_AES_256_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // PSK cipher suites.
+
+    // Cipher 8C
+    {
+     TLS1_TXT_PSK_WITH_AES_128_CBC_SHA,
+     "TLS_PSK_WITH_AES_128_CBC_SHA",
+     TLS1_CK_PSK_WITH_AES_128_CBC_SHA,
+     SSL_kPSK,
+     SSL_aPSK,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 8D
+    {
+     TLS1_TXT_PSK_WITH_AES_256_CBC_SHA,
+     "TLS_PSK_WITH_AES_256_CBC_SHA",
+     TLS1_CK_PSK_WITH_AES_256_CBC_SHA,
+     SSL_kPSK,
+     SSL_aPSK,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // GCM ciphersuites from RFC5288
+
+    // Cipher 9C
+    {
+     TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256,
+     "TLS_RSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_RSA_WITH_AES_128_GCM_SHA256,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher 9D
+    {
+     TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384,
+     "TLS_RSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_RSA_WITH_AES_256_GCM_SHA384,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // TLS 1.3 suites.
+
+    // Cipher 1301
+    {
+      TLS1_TXT_AES_128_GCM_SHA256,
+      "TLS_AES_128_GCM_SHA256",
+      TLS1_CK_AES_128_GCM_SHA256,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_AES128GCM,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher 1302
+    {
+      TLS1_TXT_AES_256_GCM_SHA384,
+      "TLS_AES_256_GCM_SHA384",
+      TLS1_CK_AES_256_GCM_SHA384,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_AES256GCM,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // Cipher 1303
+    {
+      TLS1_TXT_CHACHA20_POLY1305_SHA256,
+      "TLS_CHACHA20_POLY1305_SHA256",
+      TLS1_CK_CHACHA20_POLY1305_SHA256,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_CHACHA20POLY1305,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C009
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C00A
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C013
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C014
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // GCM based TLS v1.2 ciphersuites from RFC5289
+
+    // Cipher C02B
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+     "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C02C
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+     "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // Cipher C02F
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+     "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C030
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+     "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // ECDHE-PSK cipher suites.
+
+    // Cipher C035
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_PSK_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C036
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_PSK_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // ChaCha20-Poly1305 cipher suites.
+
+    // Cipher CCA8
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher CCA9
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher CCAB
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+};
+
+Span<const SSL_CIPHER> AllCiphers() {
+  return MakeConstSpan(kCiphers, OPENSSL_ARRAY_SIZE(kCiphers));
+}
+
+#define CIPHER_ADD 1
+#define CIPHER_KILL 2
+#define CIPHER_DEL 3
+#define CIPHER_ORD 4
+#define CIPHER_SPECIAL 5
+
+typedef struct cipher_order_st {
+  const SSL_CIPHER *cipher;
+  bool active;
+  bool in_group;
+  struct cipher_order_st *next, *prev;
+} CIPHER_ORDER;
+
+typedef struct cipher_alias_st {
+  // name is the name of the cipher alias.
+  const char *name;
+
+  // The following fields are bitmasks for the corresponding fields on
+  // |SSL_CIPHER|. A cipher matches a cipher alias iff, for each bitmask, the
+  // bit corresponding to the cipher's value is set to 1. If any bitmask is
+  // all zeroes, the alias matches nothing. Use |~0u| for the default value.
+  uint32_t algorithm_mkey;
+  uint32_t algorithm_auth;
+  uint32_t algorithm_enc;
+  uint32_t algorithm_mac;
+
+  // min_version, if non-zero, matches all ciphers which were added in that
+  // particular protocol version.
+  uint16_t min_version;
+} CIPHER_ALIAS;
+
+static const CIPHER_ALIAS kCipherAliases[] = {
+    // "ALL" doesn't include eNULL. It must be explicitly enabled.
+    {"ALL", ~0u, ~0u, ~0u, ~0u, 0},
+
+    // The "COMPLEMENTOFDEFAULT" rule is omitted. It matches nothing.
+
+    // key exchange aliases
+    // (some of those using only a single bit here combine
+    // multiple key exchange algs according to the RFCs.
+    {"kRSA", SSL_kRSA, ~0u, ~0u, ~0u, 0},
+
+    {"kECDHE", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"kEECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"ECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+
+    {"kPSK", SSL_kPSK, ~0u, ~0u, ~0u, 0},
+
+    // server authentication aliases
+    {"aRSA", ~0u, SSL_aRSA, ~0u, ~0u, 0},
+    {"aECDSA", ~0u, SSL_aECDSA, ~0u, ~0u, 0},
+    {"ECDSA", ~0u, SSL_aECDSA, ~0u, ~0u, 0},
+    {"aPSK", ~0u, SSL_aPSK, ~0u, ~0u, 0},
+
+    // aliases combining key exchange and server authentication
+    {"ECDHE", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"EECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"RSA", SSL_kRSA, SSL_aRSA, ~0u, ~0u, 0},
+    {"PSK", SSL_kPSK, SSL_aPSK, ~0u, ~0u, 0},
+
+    // symmetric encryption aliases
+    {"3DES", ~0u, ~0u, SSL_3DES, ~0u, 0},
+    {"AES128", ~0u, ~0u, SSL_AES128 | SSL_AES128GCM, ~0u, 0},
+    {"AES256", ~0u, ~0u, SSL_AES256 | SSL_AES256GCM, ~0u, 0},
+    {"AES", ~0u, ~0u, SSL_AES, ~0u, 0},
+    {"AESGCM", ~0u, ~0u, SSL_AES128GCM | SSL_AES256GCM, ~0u, 0},
+    {"CHACHA20", ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0},
+
+    // MAC aliases
+    {"SHA1", ~0u, ~0u, ~0u, SSL_SHA1, 0},
+    {"SHA", ~0u, ~0u, ~0u, SSL_SHA1, 0},
+
+    // Legacy protocol minimum version aliases. "TLSv1" is intentionally the
+    // same as "SSLv3".
+    {"SSLv3", ~0u, ~0u, ~0u, ~0u, SSL3_VERSION},
+    {"TLSv1", ~0u, ~0u, ~0u, ~0u, SSL3_VERSION},
+    {"TLSv1.2", ~0u, ~0u, ~0u, ~0u, TLS1_2_VERSION},
+
+    // Legacy strength classes.
+    {"HIGH", ~0u, ~0u, ~0u, ~0u, 0},
+    {"FIPS", ~0u, ~0u, ~0u, ~0u, 0},
+
+    // Temporary no-op aliases corresponding to removed SHA-2 legacy CBC
+    // ciphers. These should be removed after 2018-05-14.
+    {"SHA256", 0, 0, 0, 0, 0},
+    {"SHA384", 0, 0, 0, 0, 0},
+};
+
+static const size_t kCipherAliasesLen = OPENSSL_ARRAY_SIZE(kCipherAliases);
+
+bool ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead,
+                             size_t *out_mac_secret_len,
+                             size_t *out_fixed_iv_len, const SSL_CIPHER *cipher,
+                             uint16_t version, bool is_dtls) {
+  *out_aead = NULL;
+  *out_mac_secret_len = 0;
+  *out_fixed_iv_len = 0;
+
+  const bool is_tls12 = version == TLS1_2_VERSION && !is_dtls;
+  const bool is_tls13 = version == TLS1_3_VERSION && !is_dtls;
+
+  if (cipher->algorithm_mac == SSL_AEAD) {
+    if (cipher->algorithm_enc == SSL_AES128GCM) {
+      if (is_tls12) {
+        *out_aead = EVP_aead_aes_128_gcm_tls12();
+      } else if (is_tls13) {
+        *out_aead = EVP_aead_aes_128_gcm_tls13();
+      } else {
+        *out_aead = EVP_aead_aes_128_gcm();
+      }
+      *out_fixed_iv_len = 4;
+    } else if (cipher->algorithm_enc == SSL_AES256GCM) {
+      if (is_tls12) {
+        *out_aead = EVP_aead_aes_256_gcm_tls12();
+      } else if (is_tls13) {
+        *out_aead = EVP_aead_aes_256_gcm_tls13();
+      } else {
+        *out_aead = EVP_aead_aes_256_gcm();
+      }
+      *out_fixed_iv_len = 4;
+    } else if (cipher->algorithm_enc == SSL_CHACHA20POLY1305) {
+      *out_aead = EVP_aead_chacha20_poly1305();
+      *out_fixed_iv_len = 12;
+    } else {
+      return false;
+    }
+
+    // In TLS 1.3, the iv_len is equal to the AEAD nonce length whereas the code
+    // above computes the TLS 1.2 construction.
+    if (version >= TLS1_3_VERSION) {
+      *out_fixed_iv_len = EVP_AEAD_nonce_length(*out_aead);
+    }
+  } else if (cipher->algorithm_mac == SSL_SHA1) {
+    if (cipher->algorithm_enc == SSL_eNULL) {
+      *out_aead = EVP_aead_null_sha1_tls();
+    } else if (cipher->algorithm_enc == SSL_3DES) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 8;
+      } else {
+        *out_aead = EVP_aead_des_ede3_cbc_sha1_tls();
+      }
+    } else if (cipher->algorithm_enc == SSL_AES128) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_aes_128_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 16;
+      } else {
+        *out_aead = EVP_aead_aes_128_cbc_sha1_tls();
+      }
+    } else if (cipher->algorithm_enc == SSL_AES256) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_aes_256_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 16;
+      } else {
+        *out_aead = EVP_aead_aes_256_cbc_sha1_tls();
+      }
+    } else {
+      return false;
+    }
+
+    *out_mac_secret_len = SHA_DIGEST_LENGTH;
+  } else {
+    return false;
+  }
+
+  return true;
+}
+
+const EVP_MD *ssl_get_handshake_digest(uint16_t version,
+                                       const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_prf) {
+    case SSL_HANDSHAKE_MAC_DEFAULT:
+      return version >= TLS1_2_VERSION ? EVP_sha256() : EVP_md5_sha1();
+    case SSL_HANDSHAKE_MAC_SHA256:
+      return EVP_sha256();
+    case SSL_HANDSHAKE_MAC_SHA384:
+      return EVP_sha384();
+    default:
+      assert(0);
+      return NULL;
+  }
+}
+
+static bool is_cipher_list_separator(char c, bool is_strict) {
+  if (c == ':') {
+    return true;
+  }
+  return !is_strict && (c == ' ' || c == ';' || c == ',');
+}
+
+// rule_equals returns whether the NUL-terminated string |rule| is equal to the
+// |buf_len| bytes at |buf|.
+static bool rule_equals(const char *rule, const char *buf, size_t buf_len) {
+  // |strncmp| alone only checks that |buf| is a prefix of |rule|.
+  return strncmp(rule, buf, buf_len) == 0 && rule[buf_len] == '\0';
+}
+
+static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
+                           CIPHER_ORDER **tail) {
+  if (curr == *tail) {
+    return;
+  }
+  if (curr == *head) {
+    *head = curr->next;
+  }
+  if (curr->prev != NULL) {
+    curr->prev->next = curr->next;
+  }
+  if (curr->next != NULL) {
+    curr->next->prev = curr->prev;
+  }
+  (*tail)->next = curr;
+  curr->prev = *tail;
+  curr->next = NULL;
+  *tail = curr;
+}
+
+static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
+                           CIPHER_ORDER **tail) {
+  if (curr == *head) {
+    return;
+  }
+  if (curr == *tail) {
+    *tail = curr->prev;
+  }
+  if (curr->next != NULL) {
+    curr->next->prev = curr->prev;
+  }
+  if (curr->prev != NULL) {
+    curr->prev->next = curr->next;
+  }
+  (*head)->prev = curr;
+  curr->next = *head;
+  curr->prev = NULL;
+  *head = curr;
+}
+
+static bool ssl_cipher_collect_ciphers(Array<CIPHER_ORDER> *out_co_list,
+                                       CIPHER_ORDER **out_head,
+                                       CIPHER_ORDER **out_tail) {
+  Array<CIPHER_ORDER> co_list;
+  if (!co_list.Init(OPENSSL_ARRAY_SIZE(kCiphers))) {
+    return false;
+  }
+
+  size_t co_list_num = 0;
+  for (const SSL_CIPHER &cipher : kCiphers) {
+    // TLS 1.3 ciphers do not participate in this mechanism.
+    if (cipher.algorithm_mkey != SSL_kGENERIC) {
+      co_list[co_list_num].cipher = &cipher;
+      co_list[co_list_num].next = NULL;
+      co_list[co_list_num].prev = NULL;
+      co_list[co_list_num].active = false;
+      co_list[co_list_num].in_group = false;
+      co_list_num++;
+    }
+  }
+
+  // Prepare linked list from list entries.
+  if (co_list_num > 0) {
+    co_list[0].prev = NULL;
+
+    if (co_list_num > 1) {
+      co_list[0].next = &co_list[1];
+
+      for (size_t i = 1; i < co_list_num - 1; i++) {
+        co_list[i].prev = &co_list[i - 1];
+        co_list[i].next = &co_list[i + 1];
+      }
+
+      co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
+    }
+
+    co_list[co_list_num - 1].next = NULL;
+
+    *out_head = &co_list[0];
+    *out_tail = &co_list[co_list_num - 1];
+  } else {
+    *out_head = nullptr;
+    *out_tail = nullptr;
+  }
+  *out_co_list = std::move(co_list);
+  return true;
+}
+
+SSLCipherPreferenceList::~SSLCipherPreferenceList() {
+  OPENSSL_free(in_group_flags);
+}
+
+bool SSLCipherPreferenceList::Init(UniquePtr<STACK_OF(SSL_CIPHER)> ciphers_arg,
+                                   Span<const bool> in_group_flags_arg) {
+  if (sk_SSL_CIPHER_num(ciphers_arg.get()) != in_group_flags_arg.size()) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  Array<bool> copy;
+  if (!copy.CopyFrom(in_group_flags_arg)) {
+    return false;
+  }
+  ciphers = std::move(ciphers_arg);
+  size_t unused_len;
+  copy.Release(&in_group_flags, &unused_len);
+  return true;
+}
+
+bool SSLCipherPreferenceList::Init(const SSLCipherPreferenceList& other) {
+  size_t size = sk_SSL_CIPHER_num(other.ciphers.get());
+  Span<const bool> other_flags(other.in_group_flags, size);
+  UniquePtr<STACK_OF(SSL_CIPHER)> other_ciphers(sk_SSL_CIPHER_dup(
+      other.ciphers.get()));
+  if (!other_ciphers) {
+    return false;
+  }
+  return Init(std::move(other_ciphers), other_flags);
+}
+
+void SSLCipherPreferenceList::Remove(const SSL_CIPHER *cipher) {
+  size_t index;
+  if (!sk_SSL_CIPHER_find(ciphers.get(), &index, cipher)) {
+    return;
+  }
+  if (!in_group_flags[index] /* last element of group */ && index > 0) {
+    in_group_flags[index-1] = false;
+  }
+  for (size_t i = index; i < sk_SSL_CIPHER_num(ciphers.get()) - 1; ++i) {
+    in_group_flags[i] = in_group_flags[i+1];
+  }
+  sk_SSL_CIPHER_delete(ciphers.get(), index);
+}
+
+// ssl_cipher_apply_rule applies the rule type |rule| to ciphers matching its
+// parameters in the linked list from |*head_p| to |*tail_p|. It writes the new
+// head and tail of the list to |*head_p| and |*tail_p|, respectively.
+//
+// - If |cipher_id| is non-zero, only that cipher is selected.
+// - Otherwise, if |strength_bits| is non-negative, it selects ciphers
+//   of that strength.
+// - Otherwise, it selects ciphers that match each bitmasks in |alg_*| and
+//   |min_version|.
+static void ssl_cipher_apply_rule(
+    uint32_t cipher_id, uint32_t alg_mkey, uint32_t alg_auth,
+    uint32_t alg_enc, uint32_t alg_mac, uint16_t min_version, int rule,
+    int strength_bits, bool in_group, CIPHER_ORDER **head_p,
+    CIPHER_ORDER **tail_p) {
+  CIPHER_ORDER *head, *tail, *curr, *next, *last;
+  const SSL_CIPHER *cp;
+  bool reverse = false;
+
+  if (cipher_id == 0 && strength_bits == -1 && min_version == 0 &&
+      (alg_mkey == 0 || alg_auth == 0 || alg_enc == 0 || alg_mac == 0)) {
+    // The rule matches nothing, so bail early.
+    return;
+  }
+
+  if (rule == CIPHER_DEL) {
+    // needed to maintain sorting between currently deleted ciphers
+    reverse = true;
+  }
+
+  head = *head_p;
+  tail = *tail_p;
+
+  if (reverse) {
+    next = tail;
+    last = head;
+  } else {
+    next = head;
+    last = tail;
+  }
+
+  curr = NULL;
+  for (;;) {
+    if (curr == last) {
+      break;
+    }
+
+    curr = next;
+    if (curr == NULL) {
+      break;
+    }
+
+    next = reverse ? curr->prev : curr->next;
+    cp = curr->cipher;
+
+    // Selection criteria is either a specific cipher, the value of
+    // |strength_bits|, or the algorithms used.
+    if (cipher_id != 0) {
+      if (cipher_id != cp->id) {
+        continue;
+      }
+    } else if (strength_bits >= 0) {
+      if (strength_bits != SSL_CIPHER_get_bits(cp, NULL)) {
+        continue;
+      }
+    } else {
+      if (!(alg_mkey & cp->algorithm_mkey) ||
+          !(alg_auth & cp->algorithm_auth) ||
+          !(alg_enc & cp->algorithm_enc) ||
+          !(alg_mac & cp->algorithm_mac) ||
+          (min_version != 0 && SSL_CIPHER_get_min_version(cp) != min_version) ||
+          // The NULL cipher must be selected explicitly.
+          cp->algorithm_enc == SSL_eNULL) {
+        continue;
+      }
+    }
+
+    // add the cipher if it has not been added yet.
+    if (rule == CIPHER_ADD) {
+      // reverse == false
+      if (!curr->active) {
+        ll_append_tail(&head, curr, &tail);
+        curr->active = true;
+        curr->in_group = in_group;
+      }
+    }
+
+    // Move the added cipher to this location
+    else if (rule == CIPHER_ORD) {
+      // reverse == false
+      if (curr->active) {
+        ll_append_tail(&head, curr, &tail);
+        curr->in_group = false;
+      }
+    } else if (rule == CIPHER_DEL) {
+      // reverse == true
+      if (curr->active) {
+        // most recently deleted ciphersuites get best positions
+        // for any future CIPHER_ADD (note that the CIPHER_DEL loop
+        // works in reverse to maintain the order)
+        ll_append_head(&head, curr, &tail);
+        curr->active = false;
+        curr->in_group = false;
+      }
+    } else if (rule == CIPHER_KILL) {
+      // reverse == false
+      if (head == curr) {
+        head = curr->next;
+      } else {
+        curr->prev->next = curr->next;
+      }
+
+      if (tail == curr) {
+        tail = curr->prev;
+      }
+      curr->active = false;
+      if (curr->next != NULL) {
+        curr->next->prev = curr->prev;
+      }
+      if (curr->prev != NULL) {
+        curr->prev->next = curr->next;
+      }
+      curr->next = NULL;
+      curr->prev = NULL;
+    }
+  }
+
+  *head_p = head;
+  *tail_p = tail;
+}
+
+static bool ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
+                                     CIPHER_ORDER **tail_p) {
+  // This routine sorts the ciphers with descending strength. The sorting must
+  // keep the pre-sorted sequence, so we apply the normal sorting routine as
+  // '+' movement to the end of the list.
+  int max_strength_bits = 0;
+  CIPHER_ORDER *curr = *head_p;
+  while (curr != NULL) {
+    if (curr->active &&
+        SSL_CIPHER_get_bits(curr->cipher, NULL) > max_strength_bits) {
+      max_strength_bits = SSL_CIPHER_get_bits(curr->cipher, NULL);
+    }
+    curr = curr->next;
+  }
+
+  Array<int> number_uses;
+  if (!number_uses.Init(max_strength_bits + 1)) {
+    return false;
+  }
+  OPENSSL_memset(number_uses.data(), 0, (max_strength_bits + 1) * sizeof(int));
+
+  // Now find the strength_bits values actually used.
+  curr = *head_p;
+  while (curr != NULL) {
+    if (curr->active) {
+      number_uses[SSL_CIPHER_get_bits(curr->cipher, NULL)]++;
+    }
+    curr = curr->next;
+  }
+
+  // Go through the list of used strength_bits values in descending order.
+  for (int i = max_strength_bits; i >= 0; i--) {
+    if (number_uses[i] > 0) {
+      ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, false, head_p,
+                            tail_p);
+    }
+  }
+
+  return true;
+}
+
+static bool ssl_cipher_process_rulestr(const char *rule_str,
+                                       CIPHER_ORDER **head_p,
+                                       CIPHER_ORDER **tail_p, bool strict) {
+  uint32_t alg_mkey, alg_auth, alg_enc, alg_mac;
+  uint16_t min_version;
+  const char *l, *buf;
+  int rule;
+  bool multi, skip_rule, in_group = false, has_group = false;
+  size_t j, buf_len;
+  uint32_t cipher_id;
+  char ch;
+
+  l = rule_str;
+  for (;;) {
+    ch = *l;
+
+    if (ch == '\0') {
+      break;  // done
+    }
+
+    if (in_group) {
+      if (ch == ']') {
+        if (*tail_p) {
+          (*tail_p)->in_group = false;
+        }
+        in_group = false;
+        l++;
+        continue;
+      }
+
+      if (ch == '|') {
+        rule = CIPHER_ADD;
+        l++;
+        continue;
+      } else if (!(ch >= 'a' && ch <= 'z') && !(ch >= 'A' && ch <= 'Z') &&
+                 !(ch >= '0' && ch <= '9')) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_OPERATOR_IN_GROUP);
+        return false;
+      } else {
+        rule = CIPHER_ADD;
+      }
+    } else if (ch == '-') {
+      rule = CIPHER_DEL;
+      l++;
+    } else if (ch == '+') {
+      rule = CIPHER_ORD;
+      l++;
+    } else if (ch == '!') {
+      rule = CIPHER_KILL;
+      l++;
+    } else if (ch == '@') {
+      rule = CIPHER_SPECIAL;
+      l++;
+    } else if (ch == '[') {
+      assert(!in_group);
+      in_group = true;
+      has_group = true;
+      l++;
+      continue;
+    } else {
+      rule = CIPHER_ADD;
+    }
+
+    // If preference groups are enabled, the only legal operator is +.
+    // Otherwise the in_group bits will get mixed up.
+    if (has_group && rule != CIPHER_ADD) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_MIXED_SPECIAL_OPERATOR_WITH_GROUPS);
+      return false;
+    }
+
+    if (is_cipher_list_separator(ch, strict)) {
+      l++;
+      continue;
+    }
+
+    multi = false;
+    cipher_id = 0;
+    alg_mkey = ~0u;
+    alg_auth = ~0u;
+    alg_enc = ~0u;
+    alg_mac = ~0u;
+    min_version = 0;
+    skip_rule = false;
+
+    for (;;) {
+      ch = *l;
+      buf = l;
+      buf_len = 0;
+      while ((ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') ||
+             (ch >= 'a' && ch <= 'z') || ch == '-' || ch == '.' || ch == '_') {
+        ch = *(++l);
+        buf_len++;
+      }
+
+      if (buf_len == 0) {
+        // We hit something we cannot deal with, it is no command or separator
+        // nor alphanumeric, so we call this an error.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+        return false;
+      }
+
+      if (rule == CIPHER_SPECIAL) {
+        break;
+      }
+
+      // Look for a matching exact cipher. These aren't allowed in multipart
+      // rules.
+      if (!multi && ch != '+') {
+        for (j = 0; j < OPENSSL_ARRAY_SIZE(kCiphers); j++) {
+          const SSL_CIPHER *cipher = &kCiphers[j];
+          if (rule_equals(cipher->name, buf, buf_len) ||
+              rule_equals(cipher->standard_name, buf, buf_len)) {
+            cipher_id = cipher->id;
+            break;
+          }
+        }
+      }
+      if (cipher_id == 0) {
+        // If not an exact cipher, look for a matching cipher alias.
+        for (j = 0; j < kCipherAliasesLen; j++) {
+          if (rule_equals(kCipherAliases[j].name, buf, buf_len)) {
+            alg_mkey &= kCipherAliases[j].algorithm_mkey;
+            alg_auth &= kCipherAliases[j].algorithm_auth;
+            alg_enc &= kCipherAliases[j].algorithm_enc;
+            alg_mac &= kCipherAliases[j].algorithm_mac;
+
+            if (min_version != 0 &&
+                min_version != kCipherAliases[j].min_version) {
+              skip_rule = true;
+            } else {
+              min_version = kCipherAliases[j].min_version;
+            }
+            break;
+          }
+        }
+        if (j == kCipherAliasesLen) {
+          skip_rule = true;
+          if (strict) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+            return false;
+          }
+        }
+      }
+
+      // Check for a multipart rule.
+      if (ch != '+') {
+        break;
+      }
+      l++;
+      multi = true;
+    }
+
+    // Ok, we have the rule, now apply it.
+    if (rule == CIPHER_SPECIAL) {
+      if (buf_len != 8 || strncmp(buf, "STRENGTH", 8) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+        return false;
+      }
+      if (!ssl_cipher_strength_sort(head_p, tail_p)) {
+        return false;
+      }
+
+      // We do not support any "multi" options together with "@", so throw away
+      // the rest of the command, if any left, until end or ':' is found.
+      while (*l != '\0' && !is_cipher_list_separator(*l, strict)) {
+        l++;
+      }
+    } else if (!skip_rule) {
+      ssl_cipher_apply_rule(cipher_id, alg_mkey, alg_auth, alg_enc, alg_mac,
+                            min_version, rule, -1, in_group, head_p, tail_p);
+    }
+  }
+
+  if (in_group) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_create_cipher_list(UniquePtr<SSLCipherPreferenceList> *out_cipher_list,
+                            const char *rule_str, bool strict) {
+  // Return with error if nothing to do.
+  if (rule_str == NULL || out_cipher_list == NULL) {
+    return false;
+  }
+
+  // Now we have to collect the available ciphers from the compiled in ciphers.
+  // We cannot get more than the number compiled in, so it is used for
+  // allocation.
+  Array<CIPHER_ORDER> co_list;
+  CIPHER_ORDER *head = nullptr, *tail = nullptr;
+  if (!ssl_cipher_collect_ciphers(&co_list, &head, &tail)) {
+    return false;
+  }
+
+  // Now arrange all ciphers by preference:
+  // TODO(davidben): Compute this order once and copy it.
+
+  // Everything else being equal, prefer ECDHE_ECDSA and ECDHE_RSA over other
+  // key exchange mechanisms
+  ssl_cipher_apply_rule(0, SSL_kECDHE, SSL_aECDSA, ~0u, ~0u, 0, CIPHER_ADD, -1,
+                        false, &head, &tail);
+  ssl_cipher_apply_rule(0, SSL_kECDHE, ~0u, ~0u, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_DEL, -1, false, &head,
+                        &tail);
+
+  // Order the bulk ciphers. First the preferred AEAD ciphers. We prefer
+  // CHACHA20 unless there is hardware support for fast and constant-time
+  // AES_GCM. Of the two CHACHA20 variants, the new one is preferred over the
+  // old one.
+  if (EVP_has_aes_hardware()) {
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0, CIPHER_ADD,
+                          -1, false, &head, &tail);
+  } else {
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0, CIPHER_ADD,
+                          -1, false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+  }
+
+  // Then the legacy non-AEAD ciphers: AES_128_CBC, AES_256_CBC,
+  // 3DES_EDE_CBC_SHA.
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_3DES, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+
+  // Temporarily enable everything else for sorting
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_ADD, -1, false, &head,
+                        &tail);
+
+  // Move ciphers without forward secrecy to the end.
+  ssl_cipher_apply_rule(0, (SSL_kRSA | SSL_kPSK), ~0u, ~0u, ~0u, 0, CIPHER_ORD,
+                        -1, false, &head, &tail);
+
+  // Now disable everything (maintaining the ordering!)
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_DEL, -1, false, &head,
+                        &tail);
+
+  // If the rule_string begins with DEFAULT, apply the default rule before
+  // using the (possibly available) additional rules.
+  const char *rule_p = rule_str;
+  if (strncmp(rule_str, "DEFAULT", 7) == 0) {
+    if (!ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, &head, &tail,
+                                    strict)) {
+      return false;
+    }
+    rule_p += 7;
+    if (*rule_p == ':') {
+      rule_p++;
+    }
+  }
+
+  if (*rule_p != '\0' &&
+      !ssl_cipher_process_rulestr(rule_p, &head, &tail, strict)) {
+    return false;
+  }
+
+  // Allocate new "cipherstack" for the result, return with error
+  // if we cannot get one.
+  UniquePtr<STACK_OF(SSL_CIPHER)> cipherstack(sk_SSL_CIPHER_new_null());
+  Array<bool> in_group_flags;
+  if (cipherstack == nullptr ||
+      !in_group_flags.Init(OPENSSL_ARRAY_SIZE(kCiphers))) {
+    return false;
+  }
+
+  // The cipher selection for the list is done. The ciphers are added
+  // to the resulting precedence to the STACK_OF(SSL_CIPHER).
+  size_t num_in_group_flags = 0;
+  for (CIPHER_ORDER *curr = head; curr != NULL; curr = curr->next) {
+    if (curr->active) {
+      if (!sk_SSL_CIPHER_push(cipherstack.get(), curr->cipher)) {
+        return false;
+      }
+      in_group_flags[num_in_group_flags++] = curr->in_group;
+    }
+  }
+
+  UniquePtr<SSLCipherPreferenceList> pref_list =
+      MakeUnique<SSLCipherPreferenceList>();
+  if (!pref_list ||
+      !pref_list->Init(
+          std::move(cipherstack),
+          MakeConstSpan(in_group_flags).subspan(0, num_in_group_flags))) {
+    return false;
+  }
+
+  *out_cipher_list = std::move(pref_list);
+
+  // Configuring an empty cipher list is an error but still updates the
+  // output.
+  if (sk_SSL_CIPHER_num((*out_cipher_list)->ciphers.get()) == 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
+    return false;
+  }
+
+  return true;
+}
+
+uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher) {
+  uint32_t id = cipher->id;
+  // All OpenSSL cipher IDs are prefaced with 0x03. Historically this referred
+  // to SSLv2 vs SSLv3.
+  assert((id & 0xff000000) == 0x03000000);
+  return id & 0xffff;
+}
+
+uint32_t ssl_cipher_auth_mask_for_key(const EVP_PKEY *key) {
+  switch (EVP_PKEY_id(key)) {
+    case EVP_PKEY_RSA:
+      return SSL_aRSA;
+    case EVP_PKEY_EC:
+    case EVP_PKEY_ED25519:
+      // Ed25519 keys in TLS 1.2 repurpose the ECDSA ciphers.
+      return SSL_aECDSA;
+    default:
+      return 0;
+  }
+}
+
+bool ssl_cipher_uses_certificate_auth(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_auth & SSL_aCERT) != 0;
+}
+
+bool ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher) {
+  // Ephemeral Diffie-Hellman key exchanges require a ServerKeyExchange. It is
+  // optional or omitted in all others.
+  return (cipher->algorithm_mkey & SSL_kECDHE) != 0;
+}
+
+size_t ssl_cipher_get_record_split_len(const SSL_CIPHER *cipher) {
+  size_t block_size;
+  switch (cipher->algorithm_enc) {
+    case SSL_3DES:
+      block_size = 8;
+      break;
+    case SSL_AES128:
+    case SSL_AES256:
+      block_size = 16;
+      break;
+    default:
+      return 0;
+  }
+
+  // All supported TLS 1.0 ciphers use SHA-1.
+  assert(cipher->algorithm_mac == SSL_SHA1);
+  size_t ret = 1 + SHA_DIGEST_LENGTH;
+  ret += block_size - (ret % block_size);
+  return ret;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+static constexpr int ssl_cipher_id_cmp_inner(const SSL_CIPHER *a,
+                                             const SSL_CIPHER *b) {
+  // C++11's constexpr functions must have a body consisting of just a
+  // return-statement.
+  return (a->id > b->id) ? 1 : ((a->id < b->id) ? -1 : 0);
+}
+
+static int ssl_cipher_id_cmp(const void *in_a, const void *in_b) {
+  return ssl_cipher_id_cmp_inner(reinterpret_cast<const SSL_CIPHER *>(in_a),
+                                 reinterpret_cast<const SSL_CIPHER *>(in_b));
+}
+
+template <typename T, size_t N>
+static constexpr size_t countof(T const (&)[N]) {
+  return N;
+}
+
+template <typename T, size_t I>
+static constexpr int check_order(const T (&arr)[I], size_t N) {
+  // C++11's constexpr functions must have a body consisting of just a
+  // return-statement.
+  return N > 1 ? ((ssl_cipher_id_cmp_inner(&arr[N - 2], &arr[N - 1]) < 0)
+                      ? check_order(arr, N - 1)
+                      : 0)
+               : 1;
+}
+
+static_assert(check_order(kCiphers, countof(kCiphers)) == 1,
+              "Ciphers are not sorted, bsearch won't work");
+
+const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value) {
+  SSL_CIPHER c;
+
+  c.id = 0x03000000L | value;
+  return reinterpret_cast<const SSL_CIPHER *>(bsearch(
+      &c, kCiphers, OPENSSL_ARRAY_SIZE(kCiphers), sizeof(SSL_CIPHER),
+      ssl_cipher_id_cmp));
+}
+
+uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *cipher) { return cipher->id; }
+
+uint16_t SSL_CIPHER_get_value(const SSL_CIPHER *cipher) {
+  return static_cast<uint16_t>(cipher->id);
+}
+
+int SSL_CIPHER_is_aead(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_mac & SSL_AEAD) != 0;
+}
+
+int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_enc) {
+    case SSL_eNULL:
+      return NID_undef;
+    case SSL_3DES:
+      return NID_des_ede3_cbc;
+    case SSL_AES128:
+      return NID_aes_128_cbc;
+    case SSL_AES256:
+      return NID_aes_256_cbc;
+    case SSL_AES128GCM:
+      return NID_aes_128_gcm;
+    case SSL_AES256GCM:
+      return NID_aes_256_gcm;
+    case SSL_CHACHA20POLY1305:
+      return NID_chacha20_poly1305;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_mac) {
+    case SSL_AEAD:
+      return NID_undef;
+    case SSL_SHA1:
+      return NID_sha1;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_mkey) {
+    case SSL_kRSA:
+      return NID_kx_rsa;
+    case SSL_kECDHE:
+      return NID_kx_ecdhe;
+    case SSL_kPSK:
+      return NID_kx_psk;
+    case SSL_kGENERIC:
+      return NID_kx_any;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_auth) {
+    case SSL_aRSA:
+      return NID_auth_rsa;
+    case SSL_aECDSA:
+      return NID_auth_ecdsa;
+    case SSL_aPSK:
+      return NID_auth_psk;
+    case SSL_aGENERIC:
+      return NID_auth_any;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_prf_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_prf) {
+    case SSL_HANDSHAKE_MAC_DEFAULT:
+      return NID_md5_sha1;
+    case SSL_HANDSHAKE_MAC_SHA256:
+      return NID_sha256;
+    case SSL_HANDSHAKE_MAC_SHA384:
+      return NID_sha384;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_is_block_cipher(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_enc & SSL_eNULL) == 0 &&
+      cipher->algorithm_mac != SSL_AEAD;
+}
+
+uint16_t SSL_CIPHER_get_min_version(const SSL_CIPHER *cipher) {
+  if (cipher->algorithm_mkey == SSL_kGENERIC ||
+      cipher->algorithm_auth == SSL_aGENERIC) {
+    return TLS1_3_VERSION;
+  }
+
+  if (cipher->algorithm_prf != SSL_HANDSHAKE_MAC_DEFAULT) {
+    // Cipher suites before TLS 1.2 use the default PRF, while all those added
+    // afterwards specify a particular hash.
+    return TLS1_2_VERSION;
+  }
+  return SSL3_VERSION;
+}
+
+uint16_t SSL_CIPHER_get_max_version(const SSL_CIPHER *cipher) {
+  if (cipher->algorithm_mkey == SSL_kGENERIC ||
+      cipher->algorithm_auth == SSL_aGENERIC) {
+    return TLS1_3_VERSION;
+  }
+  return TLS1_2_VERSION;
+}
+
+// return the actual cipher being used
+const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher) {
+  if (cipher != NULL) {
+    return cipher->name;
+  }
+
+  return "(NONE)";
+}
+
+const char *SSL_CIPHER_standard_name(const SSL_CIPHER *cipher) {
+  return cipher->standard_name;
+}
+
+const char *SSL_CIPHER_get_kx_name(const SSL_CIPHER *cipher) {
+  if (cipher == NULL) {
+    return "";
+  }
+
+  switch (cipher->algorithm_mkey) {
+    case SSL_kRSA:
+      return "RSA";
+
+    case SSL_kECDHE:
+      switch (cipher->algorithm_auth) {
+        case SSL_aECDSA:
+          return "ECDHE_ECDSA";
+        case SSL_aRSA:
+          return "ECDHE_RSA";
+        case SSL_aPSK:
+          return "ECDHE_PSK";
+        default:
+          assert(0);
+          return "UNKNOWN";
+      }
+
+    case SSL_kPSK:
+      assert(cipher->algorithm_auth == SSL_aPSK);
+      return "PSK";
+
+    case SSL_kGENERIC:
+      assert(cipher->algorithm_auth == SSL_aGENERIC);
+      return "GENERIC";
+
+    default:
+      assert(0);
+      return "UNKNOWN";
+  }
+}
+
+char *SSL_CIPHER_get_rfc_name(const SSL_CIPHER *cipher) {
+  if (cipher == NULL) {
+    return NULL;
+  }
+
+  return OPENSSL_strdup(SSL_CIPHER_standard_name(cipher));
+}
+
+int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher, int *out_alg_bits) {
+  if (cipher == NULL) {
+    return 0;
+  }
+
+  int alg_bits, strength_bits;
+  switch (cipher->algorithm_enc) {
+    case SSL_AES128:
+    case SSL_AES128GCM:
+      alg_bits = 128;
+      strength_bits = 128;
+      break;
+
+    case SSL_AES256:
+    case SSL_AES256GCM:
+    case SSL_CHACHA20POLY1305:
+      alg_bits = 256;
+      strength_bits = 256;
+      break;
+
+    case SSL_3DES:
+      alg_bits = 168;
+      strength_bits = 112;
+      break;
+
+    case SSL_eNULL:
+      alg_bits = 0;
+      strength_bits = 0;
+      break;
+
+    default:
+      assert(0);
+      alg_bits = 0;
+      strength_bits = 0;
+  }
+
+  if (out_alg_bits != NULL) {
+    *out_alg_bits = alg_bits;
+  }
+  return strength_bits;
+}
+
+const char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf,
+                                   int len) {
+  const char *kx, *au, *enc, *mac;
+  uint32_t alg_mkey, alg_auth, alg_enc, alg_mac;
+
+  alg_mkey = cipher->algorithm_mkey;
+  alg_auth = cipher->algorithm_auth;
+  alg_enc = cipher->algorithm_enc;
+  alg_mac = cipher->algorithm_mac;
+
+  switch (alg_mkey) {
+    case SSL_kRSA:
+      kx = "RSA";
+      break;
+
+    case SSL_kECDHE:
+      kx = "ECDH";
+      break;
+
+    case SSL_kPSK:
+      kx = "PSK";
+      break;
+
+    case SSL_kGENERIC:
+      kx = "GENERIC";
+      break;
+
+    default:
+      kx = "unknown";
+  }
+
+  switch (alg_auth) {
+    case SSL_aRSA:
+      au = "RSA";
+      break;
+
+    case SSL_aECDSA:
+      au = "ECDSA";
+      break;
+
+    case SSL_aPSK:
+      au = "PSK";
+      break;
+
+    case SSL_aGENERIC:
+      au = "GENERIC";
+      break;
+
+    default:
+      au = "unknown";
+      break;
+  }
+
+  switch (alg_enc) {
+    case SSL_3DES:
+      enc = "3DES(168)";
+      break;
+
+    case SSL_AES128:
+      enc = "AES(128)";
+      break;
+
+    case SSL_AES256:
+      enc = "AES(256)";
+      break;
+
+    case SSL_AES128GCM:
+      enc = "AESGCM(128)";
+      break;
+
+    case SSL_AES256GCM:
+      enc = "AESGCM(256)";
+      break;
+
+    case SSL_CHACHA20POLY1305:
+      enc = "ChaCha20-Poly1305";
+      break;
+
+    case SSL_eNULL:
+      enc="None";
+      break;
+
+    default:
+      enc = "unknown";
+      break;
+  }
+
+  switch (alg_mac) {
+    case SSL_SHA1:
+      mac = "SHA1";
+      break;
+
+    case SSL_AEAD:
+      mac = "AEAD";
+      break;
+
+    default:
+      mac = "unknown";
+      break;
+  }
+
+  if (buf == NULL) {
+    len = 128;
+    buf = (char *)OPENSSL_malloc(len);
+    if (buf == NULL) {
+      return NULL;
+    }
+  } else if (len < 128) {
+    return "Buffer too small";
+  }
+
+  BIO_snprintf(buf, len, "%-23s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n",
+               cipher->name, kx, au, enc, mac);
+  return buf;
+}
+
+const char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher) {
+  return "TLSv1/SSLv3";
+}
+
+STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) { return NULL; }
+
+int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) { return 1; }
+
+const char *SSL_COMP_get_name(const COMP_METHOD *comp) { return NULL; }
+
+const char *SSL_COMP_get0_name(const SSL_COMP *comp) { return comp->name; }
+
+int SSL_COMP_get_id(const SSL_COMP *comp) { return comp->id; }
+
+void SSL_COMP_free_compression_methods(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc.grpc_back
new file mode 100644
index 0000000..c421292
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_cipher.cc.grpc_back	
@@ -0,0 +1,1718 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+#include <openssl/stack.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static constexpr SSL_CIPHER kCiphers[] = {
+    // The RSA ciphers
+    // Cipher 02
+    {
+     SSL3_TXT_RSA_NULL_SHA,
+     "TLS_RSA_WITH_NULL_SHA",
+     SSL3_CK_RSA_NULL_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_eNULL,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 0A
+    {
+     SSL3_TXT_RSA_DES_192_CBC3_SHA,
+     "TLS_RSA_WITH_3DES_EDE_CBC_SHA",
+     SSL3_CK_RSA_DES_192_CBC3_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_3DES,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+
+    // New AES ciphersuites
+
+    // Cipher 2F
+    {
+     TLS1_TXT_RSA_WITH_AES_128_SHA,
+     "TLS_RSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_RSA_WITH_AES_128_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 35
+    {
+     TLS1_TXT_RSA_WITH_AES_256_SHA,
+     "TLS_RSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_RSA_WITH_AES_256_SHA,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // PSK cipher suites.
+
+    // Cipher 8C
+    {
+     TLS1_TXT_PSK_WITH_AES_128_CBC_SHA,
+     "TLS_PSK_WITH_AES_128_CBC_SHA",
+     TLS1_CK_PSK_WITH_AES_128_CBC_SHA,
+     SSL_kPSK,
+     SSL_aPSK,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher 8D
+    {
+     TLS1_TXT_PSK_WITH_AES_256_CBC_SHA,
+     "TLS_PSK_WITH_AES_256_CBC_SHA",
+     TLS1_CK_PSK_WITH_AES_256_CBC_SHA,
+     SSL_kPSK,
+     SSL_aPSK,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // GCM ciphersuites from RFC5288
+
+    // Cipher 9C
+    {
+     TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256,
+     "TLS_RSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_RSA_WITH_AES_128_GCM_SHA256,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher 9D
+    {
+     TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384,
+     "TLS_RSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_RSA_WITH_AES_256_GCM_SHA384,
+     SSL_kRSA,
+     SSL_aRSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // TLS 1.3 suites.
+
+    // Cipher 1301
+    {
+      TLS1_TXT_AES_128_GCM_SHA256,
+      "TLS_AES_128_GCM_SHA256",
+      TLS1_CK_AES_128_GCM_SHA256,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_AES128GCM,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher 1302
+    {
+      TLS1_TXT_AES_256_GCM_SHA384,
+      "TLS_AES_256_GCM_SHA384",
+      TLS1_CK_AES_256_GCM_SHA384,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_AES256GCM,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // Cipher 1303
+    {
+      TLS1_TXT_CHACHA20_POLY1305_SHA256,
+      "TLS_CHACHA20_POLY1305_SHA256",
+      TLS1_CK_CHACHA20_POLY1305_SHA256,
+      SSL_kGENERIC,
+      SSL_aGENERIC,
+      SSL_CHACHA20POLY1305,
+      SSL_AEAD,
+      SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C009
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C00A
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C013
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C014
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // GCM based TLS v1.2 ciphersuites from RFC5289
+
+    // Cipher C02B
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+     "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C02C
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+     "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // Cipher C02F
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+     "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
+     TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES128GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher C030
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+     "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
+     TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_AES256GCM,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA384,
+    },
+
+    // ECDHE-PSK cipher suites.
+
+    // Cipher C035
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_AES_128_CBC_SHA,
+     "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA",
+     TLS1_CK_ECDHE_PSK_WITH_AES_128_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_AES128,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // Cipher C036
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_AES_256_CBC_SHA,
+     "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA",
+     TLS1_CK_ECDHE_PSK_WITH_AES_256_CBC_SHA,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_AES256,
+     SSL_SHA1,
+     SSL_HANDSHAKE_MAC_DEFAULT,
+    },
+
+    // ChaCha20-Poly1305 cipher suites.
+
+    // Cipher CCA8
+    {
+     TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aRSA,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher CCA9
+    {
+     TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aECDSA,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+    // Cipher CCAB
+    {
+     TLS1_TXT_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+     "TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256",
+     TLS1_CK_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+     SSL_kECDHE,
+     SSL_aPSK,
+     SSL_CHACHA20POLY1305,
+     SSL_AEAD,
+     SSL_HANDSHAKE_MAC_SHA256,
+    },
+
+};
+
+Span<const SSL_CIPHER> AllCiphers() {
+  return MakeConstSpan(kCiphers, OPENSSL_ARRAY_SIZE(kCiphers));
+}
+
+#define CIPHER_ADD 1
+#define CIPHER_KILL 2
+#define CIPHER_DEL 3
+#define CIPHER_ORD 4
+#define CIPHER_SPECIAL 5
+
+typedef struct cipher_order_st {
+  const SSL_CIPHER *cipher;
+  bool active;
+  bool in_group;
+  struct cipher_order_st *next, *prev;
+} CIPHER_ORDER;
+
+typedef struct cipher_alias_st {
+  // name is the name of the cipher alias.
+  const char *name;
+
+  // The following fields are bitmasks for the corresponding fields on
+  // |SSL_CIPHER|. A cipher matches a cipher alias iff, for each bitmask, the
+  // bit corresponding to the cipher's value is set to 1. If any bitmask is
+  // all zeroes, the alias matches nothing. Use |~0u| for the default value.
+  uint32_t algorithm_mkey;
+  uint32_t algorithm_auth;
+  uint32_t algorithm_enc;
+  uint32_t algorithm_mac;
+
+  // min_version, if non-zero, matches all ciphers which were added in that
+  // particular protocol version.
+  uint16_t min_version;
+} CIPHER_ALIAS;
+
+static const CIPHER_ALIAS kCipherAliases[] = {
+    // "ALL" doesn't include eNULL. It must be explicitly enabled.
+    {"ALL", ~0u, ~0u, ~0u, ~0u, 0},
+
+    // The "COMPLEMENTOFDEFAULT" rule is omitted. It matches nothing.
+
+    // key exchange aliases
+    // (some of those using only a single bit here combine
+    // multiple key exchange algs according to the RFCs.
+    {"kRSA", SSL_kRSA, ~0u, ~0u, ~0u, 0},
+
+    {"kECDHE", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"kEECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"ECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+
+    {"kPSK", SSL_kPSK, ~0u, ~0u, ~0u, 0},
+
+    // server authentication aliases
+    {"aRSA", ~0u, SSL_aRSA, ~0u, ~0u, 0},
+    {"aECDSA", ~0u, SSL_aECDSA, ~0u, ~0u, 0},
+    {"ECDSA", ~0u, SSL_aECDSA, ~0u, ~0u, 0},
+    {"aPSK", ~0u, SSL_aPSK, ~0u, ~0u, 0},
+
+    // aliases combining key exchange and server authentication
+    {"ECDHE", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"EECDH", SSL_kECDHE, ~0u, ~0u, ~0u, 0},
+    {"RSA", SSL_kRSA, SSL_aRSA, ~0u, ~0u, 0},
+    {"PSK", SSL_kPSK, SSL_aPSK, ~0u, ~0u, 0},
+
+    // symmetric encryption aliases
+    {"3DES", ~0u, ~0u, SSL_3DES, ~0u, 0},
+    {"AES128", ~0u, ~0u, SSL_AES128 | SSL_AES128GCM, ~0u, 0},
+    {"AES256", ~0u, ~0u, SSL_AES256 | SSL_AES256GCM, ~0u, 0},
+    {"AES", ~0u, ~0u, SSL_AES, ~0u, 0},
+    {"AESGCM", ~0u, ~0u, SSL_AES128GCM | SSL_AES256GCM, ~0u, 0},
+    {"CHACHA20", ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0},
+
+    // MAC aliases
+    {"SHA1", ~0u, ~0u, ~0u, SSL_SHA1, 0},
+    {"SHA", ~0u, ~0u, ~0u, SSL_SHA1, 0},
+
+    // Legacy protocol minimum version aliases. "TLSv1" is intentionally the
+    // same as "SSLv3".
+    {"SSLv3", ~0u, ~0u, ~0u, ~0u, SSL3_VERSION},
+    {"TLSv1", ~0u, ~0u, ~0u, ~0u, SSL3_VERSION},
+    {"TLSv1.2", ~0u, ~0u, ~0u, ~0u, TLS1_2_VERSION},
+
+    // Legacy strength classes.
+    {"HIGH", ~0u, ~0u, ~0u, ~0u, 0},
+    {"FIPS", ~0u, ~0u, ~0u, ~0u, 0},
+
+    // Temporary no-op aliases corresponding to removed SHA-2 legacy CBC
+    // ciphers. These should be removed after 2018-05-14.
+    {"SHA256", 0, 0, 0, 0, 0},
+    {"SHA384", 0, 0, 0, 0, 0},
+};
+
+static const size_t kCipherAliasesLen = OPENSSL_ARRAY_SIZE(kCipherAliases);
+
+bool ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead,
+                             size_t *out_mac_secret_len,
+                             size_t *out_fixed_iv_len, const SSL_CIPHER *cipher,
+                             uint16_t version, bool is_dtls) {
+  *out_aead = NULL;
+  *out_mac_secret_len = 0;
+  *out_fixed_iv_len = 0;
+
+  const bool is_tls12 = version == TLS1_2_VERSION && !is_dtls;
+  const bool is_tls13 = version == TLS1_3_VERSION && !is_dtls;
+
+  if (cipher->algorithm_mac == SSL_AEAD) {
+    if (cipher->algorithm_enc == SSL_AES128GCM) {
+      if (is_tls12) {
+        *out_aead = EVP_aead_aes_128_gcm_tls12();
+      } else if (is_tls13) {
+        *out_aead = EVP_aead_aes_128_gcm_tls13();
+      } else {
+        *out_aead = EVP_aead_aes_128_gcm();
+      }
+      *out_fixed_iv_len = 4;
+    } else if (cipher->algorithm_enc == SSL_AES256GCM) {
+      if (is_tls12) {
+        *out_aead = EVP_aead_aes_256_gcm_tls12();
+      } else if (is_tls13) {
+        *out_aead = EVP_aead_aes_256_gcm_tls13();
+      } else {
+        *out_aead = EVP_aead_aes_256_gcm();
+      }
+      *out_fixed_iv_len = 4;
+    } else if (cipher->algorithm_enc == SSL_CHACHA20POLY1305) {
+      *out_aead = EVP_aead_chacha20_poly1305();
+      *out_fixed_iv_len = 12;
+    } else {
+      return false;
+    }
+
+    // In TLS 1.3, the iv_len is equal to the AEAD nonce length whereas the code
+    // above computes the TLS 1.2 construction.
+    if (version >= TLS1_3_VERSION) {
+      *out_fixed_iv_len = EVP_AEAD_nonce_length(*out_aead);
+    }
+  } else if (cipher->algorithm_mac == SSL_SHA1) {
+    if (cipher->algorithm_enc == SSL_eNULL) {
+      *out_aead = EVP_aead_null_sha1_tls();
+    } else if (cipher->algorithm_enc == SSL_3DES) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 8;
+      } else {
+        *out_aead = EVP_aead_des_ede3_cbc_sha1_tls();
+      }
+    } else if (cipher->algorithm_enc == SSL_AES128) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_aes_128_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 16;
+      } else {
+        *out_aead = EVP_aead_aes_128_cbc_sha1_tls();
+      }
+    } else if (cipher->algorithm_enc == SSL_AES256) {
+      if (version == TLS1_VERSION) {
+        *out_aead = EVP_aead_aes_256_cbc_sha1_tls_implicit_iv();
+        *out_fixed_iv_len = 16;
+      } else {
+        *out_aead = EVP_aead_aes_256_cbc_sha1_tls();
+      }
+    } else {
+      return false;
+    }
+
+    *out_mac_secret_len = SHA_DIGEST_LENGTH;
+  } else {
+    return false;
+  }
+
+  return true;
+}
+
+const EVP_MD *ssl_get_handshake_digest(uint16_t version,
+                                       const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_prf) {
+    case SSL_HANDSHAKE_MAC_DEFAULT:
+      return version >= TLS1_2_VERSION ? EVP_sha256() : EVP_md5_sha1();
+    case SSL_HANDSHAKE_MAC_SHA256:
+      return EVP_sha256();
+    case SSL_HANDSHAKE_MAC_SHA384:
+      return EVP_sha384();
+    default:
+      assert(0);
+      return NULL;
+  }
+}
+
+static bool is_cipher_list_separator(char c, bool is_strict) {
+  if (c == ':') {
+    return true;
+  }
+  return !is_strict && (c == ' ' || c == ';' || c == ',');
+}
+
+// rule_equals returns whether the NUL-terminated string |rule| is equal to the
+// |buf_len| bytes at |buf|.
+static bool rule_equals(const char *rule, const char *buf, size_t buf_len) {
+  // |strncmp| alone only checks that |buf| is a prefix of |rule|.
+  return strncmp(rule, buf, buf_len) == 0 && rule[buf_len] == '\0';
+}
+
+static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
+                           CIPHER_ORDER **tail) {
+  if (curr == *tail) {
+    return;
+  }
+  if (curr == *head) {
+    *head = curr->next;
+  }
+  if (curr->prev != NULL) {
+    curr->prev->next = curr->next;
+  }
+  if (curr->next != NULL) {
+    curr->next->prev = curr->prev;
+  }
+  (*tail)->next = curr;
+  curr->prev = *tail;
+  curr->next = NULL;
+  *tail = curr;
+}
+
+static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
+                           CIPHER_ORDER **tail) {
+  if (curr == *head) {
+    return;
+  }
+  if (curr == *tail) {
+    *tail = curr->prev;
+  }
+  if (curr->next != NULL) {
+    curr->next->prev = curr->prev;
+  }
+  if (curr->prev != NULL) {
+    curr->prev->next = curr->next;
+  }
+  (*head)->prev = curr;
+  curr->next = *head;
+  curr->prev = NULL;
+  *head = curr;
+}
+
+static bool ssl_cipher_collect_ciphers(Array<CIPHER_ORDER> *out_co_list,
+                                       CIPHER_ORDER **out_head,
+                                       CIPHER_ORDER **out_tail) {
+  Array<CIPHER_ORDER> co_list;
+  if (!co_list.Init(OPENSSL_ARRAY_SIZE(kCiphers))) {
+    return false;
+  }
+
+  size_t co_list_num = 0;
+  for (const SSL_CIPHER &cipher : kCiphers) {
+    // TLS 1.3 ciphers do not participate in this mechanism.
+    if (cipher.algorithm_mkey != SSL_kGENERIC) {
+      co_list[co_list_num].cipher = &cipher;
+      co_list[co_list_num].next = NULL;
+      co_list[co_list_num].prev = NULL;
+      co_list[co_list_num].active = false;
+      co_list[co_list_num].in_group = false;
+      co_list_num++;
+    }
+  }
+
+  // Prepare linked list from list entries.
+  if (co_list_num > 0) {
+    co_list[0].prev = NULL;
+
+    if (co_list_num > 1) {
+      co_list[0].next = &co_list[1];
+
+      for (size_t i = 1; i < co_list_num - 1; i++) {
+        co_list[i].prev = &co_list[i - 1];
+        co_list[i].next = &co_list[i + 1];
+      }
+
+      co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
+    }
+
+    co_list[co_list_num - 1].next = NULL;
+
+    *out_head = &co_list[0];
+    *out_tail = &co_list[co_list_num - 1];
+  } else {
+    *out_head = nullptr;
+    *out_tail = nullptr;
+  }
+  *out_co_list = std::move(co_list);
+  return true;
+}
+
+SSLCipherPreferenceList::~SSLCipherPreferenceList() {
+  OPENSSL_free(in_group_flags);
+}
+
+bool SSLCipherPreferenceList::Init(UniquePtr<STACK_OF(SSL_CIPHER)> ciphers_arg,
+                                   Span<const bool> in_group_flags_arg) {
+  if (sk_SSL_CIPHER_num(ciphers_arg.get()) != in_group_flags_arg.size()) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  Array<bool> copy;
+  if (!copy.CopyFrom(in_group_flags_arg)) {
+    return false;
+  }
+  ciphers = std::move(ciphers_arg);
+  size_t unused_len;
+  copy.Release(&in_group_flags, &unused_len);
+  return true;
+}
+
+bool SSLCipherPreferenceList::Init(const SSLCipherPreferenceList& other) {
+  size_t size = sk_SSL_CIPHER_num(other.ciphers.get());
+  Span<const bool> other_flags(other.in_group_flags, size);
+  UniquePtr<STACK_OF(SSL_CIPHER)> other_ciphers(sk_SSL_CIPHER_dup(
+      other.ciphers.get()));
+  if (!other_ciphers) {
+    return false;
+  }
+  return Init(std::move(other_ciphers), other_flags);
+}
+
+void SSLCipherPreferenceList::Remove(const SSL_CIPHER *cipher) {
+  size_t index;
+  if (!sk_SSL_CIPHER_find(ciphers.get(), &index, cipher)) {
+    return;
+  }
+  if (!in_group_flags[index] /* last element of group */ && index > 0) {
+    in_group_flags[index-1] = false;
+  }
+  for (size_t i = index; i < sk_SSL_CIPHER_num(ciphers.get()) - 1; ++i) {
+    in_group_flags[i] = in_group_flags[i+1];
+  }
+  sk_SSL_CIPHER_delete(ciphers.get(), index);
+}
+
+// ssl_cipher_apply_rule applies the rule type |rule| to ciphers matching its
+// parameters in the linked list from |*head_p| to |*tail_p|. It writes the new
+// head and tail of the list to |*head_p| and |*tail_p|, respectively.
+//
+// - If |cipher_id| is non-zero, only that cipher is selected.
+// - Otherwise, if |strength_bits| is non-negative, it selects ciphers
+//   of that strength.
+// - Otherwise, it selects ciphers that match each bitmasks in |alg_*| and
+//   |min_version|.
+static void ssl_cipher_apply_rule(
+    uint32_t cipher_id, uint32_t alg_mkey, uint32_t alg_auth,
+    uint32_t alg_enc, uint32_t alg_mac, uint16_t min_version, int rule,
+    int strength_bits, bool in_group, CIPHER_ORDER **head_p,
+    CIPHER_ORDER **tail_p) {
+  CIPHER_ORDER *head, *tail, *curr, *next, *last;
+  const SSL_CIPHER *cp;
+  bool reverse = false;
+
+  if (cipher_id == 0 && strength_bits == -1 && min_version == 0 &&
+      (alg_mkey == 0 || alg_auth == 0 || alg_enc == 0 || alg_mac == 0)) {
+    // The rule matches nothing, so bail early.
+    return;
+  }
+
+  if (rule == CIPHER_DEL) {
+    // needed to maintain sorting between currently deleted ciphers
+    reverse = true;
+  }
+
+  head = *head_p;
+  tail = *tail_p;
+
+  if (reverse) {
+    next = tail;
+    last = head;
+  } else {
+    next = head;
+    last = tail;
+  }
+
+  curr = NULL;
+  for (;;) {
+    if (curr == last) {
+      break;
+    }
+
+    curr = next;
+    if (curr == NULL) {
+      break;
+    }
+
+    next = reverse ? curr->prev : curr->next;
+    cp = curr->cipher;
+
+    // Selection criteria is either a specific cipher, the value of
+    // |strength_bits|, or the algorithms used.
+    if (cipher_id != 0) {
+      if (cipher_id != cp->id) {
+        continue;
+      }
+    } else if (strength_bits >= 0) {
+      if (strength_bits != SSL_CIPHER_get_bits(cp, NULL)) {
+        continue;
+      }
+    } else {
+      if (!(alg_mkey & cp->algorithm_mkey) ||
+          !(alg_auth & cp->algorithm_auth) ||
+          !(alg_enc & cp->algorithm_enc) ||
+          !(alg_mac & cp->algorithm_mac) ||
+          (min_version != 0 && SSL_CIPHER_get_min_version(cp) != min_version) ||
+          // The NULL cipher must be selected explicitly.
+          cp->algorithm_enc == SSL_eNULL) {
+        continue;
+      }
+    }
+
+    // add the cipher if it has not been added yet.
+    if (rule == CIPHER_ADD) {
+      // reverse == false
+      if (!curr->active) {
+        ll_append_tail(&head, curr, &tail);
+        curr->active = true;
+        curr->in_group = in_group;
+      }
+    }
+
+    // Move the added cipher to this location
+    else if (rule == CIPHER_ORD) {
+      // reverse == false
+      if (curr->active) {
+        ll_append_tail(&head, curr, &tail);
+        curr->in_group = false;
+      }
+    } else if (rule == CIPHER_DEL) {
+      // reverse == true
+      if (curr->active) {
+        // most recently deleted ciphersuites get best positions
+        // for any future CIPHER_ADD (note that the CIPHER_DEL loop
+        // works in reverse to maintain the order)
+        ll_append_head(&head, curr, &tail);
+        curr->active = false;
+        curr->in_group = false;
+      }
+    } else if (rule == CIPHER_KILL) {
+      // reverse == false
+      if (head == curr) {
+        head = curr->next;
+      } else {
+        curr->prev->next = curr->next;
+      }
+
+      if (tail == curr) {
+        tail = curr->prev;
+      }
+      curr->active = false;
+      if (curr->next != NULL) {
+        curr->next->prev = curr->prev;
+      }
+      if (curr->prev != NULL) {
+        curr->prev->next = curr->next;
+      }
+      curr->next = NULL;
+      curr->prev = NULL;
+    }
+  }
+
+  *head_p = head;
+  *tail_p = tail;
+}
+
+static bool ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
+                                     CIPHER_ORDER **tail_p) {
+  // This routine sorts the ciphers with descending strength. The sorting must
+  // keep the pre-sorted sequence, so we apply the normal sorting routine as
+  // '+' movement to the end of the list.
+  int max_strength_bits = 0;
+  CIPHER_ORDER *curr = *head_p;
+  while (curr != NULL) {
+    if (curr->active &&
+        SSL_CIPHER_get_bits(curr->cipher, NULL) > max_strength_bits) {
+      max_strength_bits = SSL_CIPHER_get_bits(curr->cipher, NULL);
+    }
+    curr = curr->next;
+  }
+
+  Array<int> number_uses;
+  if (!number_uses.Init(max_strength_bits + 1)) {
+    return false;
+  }
+  OPENSSL_memset(number_uses.data(), 0, (max_strength_bits + 1) * sizeof(int));
+
+  // Now find the strength_bits values actually used.
+  curr = *head_p;
+  while (curr != NULL) {
+    if (curr->active) {
+      number_uses[SSL_CIPHER_get_bits(curr->cipher, NULL)]++;
+    }
+    curr = curr->next;
+  }
+
+  // Go through the list of used strength_bits values in descending order.
+  for (int i = max_strength_bits; i >= 0; i--) {
+    if (number_uses[i] > 0) {
+      ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, false, head_p,
+                            tail_p);
+    }
+  }
+
+  return true;
+}
+
+static bool ssl_cipher_process_rulestr(const char *rule_str,
+                                       CIPHER_ORDER **head_p,
+                                       CIPHER_ORDER **tail_p, bool strict) {
+  uint32_t alg_mkey, alg_auth, alg_enc, alg_mac;
+  uint16_t min_version;
+  const char *l, *buf;
+  int rule;
+  bool multi, skip_rule, in_group = false, has_group = false;
+  size_t j, buf_len;
+  uint32_t cipher_id;
+  char ch;
+
+  l = rule_str;
+  for (;;) {
+    ch = *l;
+
+    if (ch == '\0') {
+      break;  // done
+    }
+
+    if (in_group) {
+      if (ch == ']') {
+        if (*tail_p) {
+          (*tail_p)->in_group = false;
+        }
+        in_group = false;
+        l++;
+        continue;
+      }
+
+      if (ch == '|') {
+        rule = CIPHER_ADD;
+        l++;
+        continue;
+      } else if (!(ch >= 'a' && ch <= 'z') && !(ch >= 'A' && ch <= 'Z') &&
+                 !(ch >= '0' && ch <= '9')) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_OPERATOR_IN_GROUP);
+        return false;
+      } else {
+        rule = CIPHER_ADD;
+      }
+    } else if (ch == '-') {
+      rule = CIPHER_DEL;
+      l++;
+    } else if (ch == '+') {
+      rule = CIPHER_ORD;
+      l++;
+    } else if (ch == '!') {
+      rule = CIPHER_KILL;
+      l++;
+    } else if (ch == '@') {
+      rule = CIPHER_SPECIAL;
+      l++;
+    } else if (ch == '[') {
+      assert(!in_group);
+      in_group = true;
+      has_group = true;
+      l++;
+      continue;
+    } else {
+      rule = CIPHER_ADD;
+    }
+
+    // If preference groups are enabled, the only legal operator is +.
+    // Otherwise the in_group bits will get mixed up.
+    if (has_group && rule != CIPHER_ADD) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_MIXED_SPECIAL_OPERATOR_WITH_GROUPS);
+      return false;
+    }
+
+    if (is_cipher_list_separator(ch, strict)) {
+      l++;
+      continue;
+    }
+
+    multi = false;
+    cipher_id = 0;
+    alg_mkey = ~0u;
+    alg_auth = ~0u;
+    alg_enc = ~0u;
+    alg_mac = ~0u;
+    min_version = 0;
+    skip_rule = false;
+
+    for (;;) {
+      ch = *l;
+      buf = l;
+      buf_len = 0;
+      while ((ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') ||
+             (ch >= 'a' && ch <= 'z') || ch == '-' || ch == '.' || ch == '_') {
+        ch = *(++l);
+        buf_len++;
+      }
+
+      if (buf_len == 0) {
+        // We hit something we cannot deal with, it is no command or separator
+        // nor alphanumeric, so we call this an error.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+        return false;
+      }
+
+      if (rule == CIPHER_SPECIAL) {
+        break;
+      }
+
+      // Look for a matching exact cipher. These aren't allowed in multipart
+      // rules.
+      if (!multi && ch != '+') {
+        for (j = 0; j < OPENSSL_ARRAY_SIZE(kCiphers); j++) {
+          const SSL_CIPHER *cipher = &kCiphers[j];
+          if (rule_equals(cipher->name, buf, buf_len) ||
+              rule_equals(cipher->standard_name, buf, buf_len)) {
+            cipher_id = cipher->id;
+            break;
+          }
+        }
+      }
+      if (cipher_id == 0) {
+        // If not an exact cipher, look for a matching cipher alias.
+        for (j = 0; j < kCipherAliasesLen; j++) {
+          if (rule_equals(kCipherAliases[j].name, buf, buf_len)) {
+            alg_mkey &= kCipherAliases[j].algorithm_mkey;
+            alg_auth &= kCipherAliases[j].algorithm_auth;
+            alg_enc &= kCipherAliases[j].algorithm_enc;
+            alg_mac &= kCipherAliases[j].algorithm_mac;
+
+            if (min_version != 0 &&
+                min_version != kCipherAliases[j].min_version) {
+              skip_rule = true;
+            } else {
+              min_version = kCipherAliases[j].min_version;
+            }
+            break;
+          }
+        }
+        if (j == kCipherAliasesLen) {
+          skip_rule = true;
+          if (strict) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+            return false;
+          }
+        }
+      }
+
+      // Check for a multipart rule.
+      if (ch != '+') {
+        break;
+      }
+      l++;
+      multi = true;
+    }
+
+    // Ok, we have the rule, now apply it.
+    if (rule == CIPHER_SPECIAL) {
+      if (buf_len != 8 || strncmp(buf, "STRENGTH", 8) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+        return false;
+      }
+      if (!ssl_cipher_strength_sort(head_p, tail_p)) {
+        return false;
+      }
+
+      // We do not support any "multi" options together with "@", so throw away
+      // the rest of the command, if any left, until end or ':' is found.
+      while (*l != '\0' && !is_cipher_list_separator(*l, strict)) {
+        l++;
+      }
+    } else if (!skip_rule) {
+      ssl_cipher_apply_rule(cipher_id, alg_mkey, alg_auth, alg_enc, alg_mac,
+                            min_version, rule, -1, in_group, head_p, tail_p);
+    }
+  }
+
+  if (in_group) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_COMMAND);
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_create_cipher_list(UniquePtr<SSLCipherPreferenceList> *out_cipher_list,
+                            const char *rule_str, bool strict) {
+  // Return with error if nothing to do.
+  if (rule_str == NULL || out_cipher_list == NULL) {
+    return false;
+  }
+
+  // Now we have to collect the available ciphers from the compiled in ciphers.
+  // We cannot get more than the number compiled in, so it is used for
+  // allocation.
+  Array<CIPHER_ORDER> co_list;
+  CIPHER_ORDER *head = nullptr, *tail = nullptr;
+  if (!ssl_cipher_collect_ciphers(&co_list, &head, &tail)) {
+    return false;
+  }
+
+  // Now arrange all ciphers by preference:
+  // TODO(davidben): Compute this order once and copy it.
+
+  // Everything else being equal, prefer ECDHE_ECDSA and ECDHE_RSA over other
+  // key exchange mechanisms
+  ssl_cipher_apply_rule(0, SSL_kECDHE, SSL_aECDSA, ~0u, ~0u, 0, CIPHER_ADD, -1,
+                        false, &head, &tail);
+  ssl_cipher_apply_rule(0, SSL_kECDHE, ~0u, ~0u, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_DEL, -1, false, &head,
+                        &tail);
+
+  // Order the bulk ciphers. First the preferred AEAD ciphers. We prefer
+  // CHACHA20 unless there is hardware support for fast and constant-time
+  // AES_GCM. Of the two CHACHA20 variants, the new one is preferred over the
+  // old one.
+  if (EVP_has_aes_hardware()) {
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0, CIPHER_ADD,
+                          -1, false, &head, &tail);
+  } else {
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_CHACHA20POLY1305, ~0u, 0, CIPHER_ADD,
+                          -1, false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+    ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256GCM, ~0u, 0, CIPHER_ADD, -1,
+                          false, &head, &tail);
+  }
+
+  // Then the legacy non-AEAD ciphers: AES_128_CBC, AES_256_CBC,
+  // 3DES_EDE_CBC_SHA.
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES128, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_AES256, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+  ssl_cipher_apply_rule(0, ~0u, ~0u, SSL_3DES, ~0u, 0, CIPHER_ADD, -1, false,
+                        &head, &tail);
+
+  // Temporarily enable everything else for sorting
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_ADD, -1, false, &head,
+                        &tail);
+
+  // Move ciphers without forward secrecy to the end.
+  ssl_cipher_apply_rule(0, (SSL_kRSA | SSL_kPSK), ~0u, ~0u, ~0u, 0, CIPHER_ORD,
+                        -1, false, &head, &tail);
+
+  // Now disable everything (maintaining the ordering!)
+  ssl_cipher_apply_rule(0, ~0u, ~0u, ~0u, ~0u, 0, CIPHER_DEL, -1, false, &head,
+                        &tail);
+
+  // If the rule_string begins with DEFAULT, apply the default rule before
+  // using the (possibly available) additional rules.
+  const char *rule_p = rule_str;
+  if (strncmp(rule_str, "DEFAULT", 7) == 0) {
+    if (!ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, &head, &tail,
+                                    strict)) {
+      return false;
+    }
+    rule_p += 7;
+    if (*rule_p == ':') {
+      rule_p++;
+    }
+  }
+
+  if (*rule_p != '\0' &&
+      !ssl_cipher_process_rulestr(rule_p, &head, &tail, strict)) {
+    return false;
+  }
+
+  // Allocate new "cipherstack" for the result, return with error
+  // if we cannot get one.
+  UniquePtr<STACK_OF(SSL_CIPHER)> cipherstack(sk_SSL_CIPHER_new_null());
+  Array<bool> in_group_flags;
+  if (cipherstack == nullptr ||
+      !in_group_flags.Init(OPENSSL_ARRAY_SIZE(kCiphers))) {
+    return false;
+  }
+
+  // The cipher selection for the list is done. The ciphers are added
+  // to the resulting precedence to the STACK_OF(SSL_CIPHER).
+  size_t num_in_group_flags = 0;
+  for (CIPHER_ORDER *curr = head; curr != NULL; curr = curr->next) {
+    if (curr->active) {
+      if (!sk_SSL_CIPHER_push(cipherstack.get(), curr->cipher)) {
+        return false;
+      }
+      in_group_flags[num_in_group_flags++] = curr->in_group;
+    }
+  }
+
+  UniquePtr<SSLCipherPreferenceList> pref_list =
+      MakeUnique<SSLCipherPreferenceList>();
+  if (!pref_list ||
+      !pref_list->Init(
+          std::move(cipherstack),
+          MakeConstSpan(in_group_flags).subspan(0, num_in_group_flags))) {
+    return false;
+  }
+
+  *out_cipher_list = std::move(pref_list);
+
+  // Configuring an empty cipher list is an error but still updates the
+  // output.
+  if (sk_SSL_CIPHER_num((*out_cipher_list)->ciphers.get()) == 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CIPHER_MATCH);
+    return false;
+  }
+
+  return true;
+}
+
+uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher) {
+  uint32_t id = cipher->id;
+  // All OpenSSL cipher IDs are prefaced with 0x03. Historically this referred
+  // to SSLv2 vs SSLv3.
+  assert((id & 0xff000000) == 0x03000000);
+  return id & 0xffff;
+}
+
+uint32_t ssl_cipher_auth_mask_for_key(const EVP_PKEY *key) {
+  switch (EVP_PKEY_id(key)) {
+    case EVP_PKEY_RSA:
+      return SSL_aRSA;
+    case EVP_PKEY_EC:
+    case EVP_PKEY_ED25519:
+      // Ed25519 keys in TLS 1.2 repurpose the ECDSA ciphers.
+      return SSL_aECDSA;
+    default:
+      return 0;
+  }
+}
+
+bool ssl_cipher_uses_certificate_auth(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_auth & SSL_aCERT) != 0;
+}
+
+bool ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher) {
+  // Ephemeral Diffie-Hellman key exchanges require a ServerKeyExchange. It is
+  // optional or omitted in all others.
+  return (cipher->algorithm_mkey & SSL_kECDHE) != 0;
+}
+
+size_t ssl_cipher_get_record_split_len(const SSL_CIPHER *cipher) {
+  size_t block_size;
+  switch (cipher->algorithm_enc) {
+    case SSL_3DES:
+      block_size = 8;
+      break;
+    case SSL_AES128:
+    case SSL_AES256:
+      block_size = 16;
+      break;
+    default:
+      return 0;
+  }
+
+  // All supported TLS 1.0 ciphers use SHA-1.
+  assert(cipher->algorithm_mac == SSL_SHA1);
+  size_t ret = 1 + SHA_DIGEST_LENGTH;
+  ret += block_size - (ret % block_size);
+  return ret;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+static constexpr int ssl_cipher_id_cmp_inner(const SSL_CIPHER *a,
+                                             const SSL_CIPHER *b) {
+  // C++11's constexpr functions must have a body consisting of just a
+  // return-statement.
+  return (a->id > b->id) ? 1 : ((a->id < b->id) ? -1 : 0);
+}
+
+static int ssl_cipher_id_cmp(const void *in_a, const void *in_b) {
+  return ssl_cipher_id_cmp_inner(reinterpret_cast<const SSL_CIPHER *>(in_a),
+                                 reinterpret_cast<const SSL_CIPHER *>(in_b));
+}
+
+template <typename T, size_t N>
+static constexpr size_t countof(T const (&)[N]) {
+  return N;
+}
+
+template <typename T, size_t I>
+static constexpr int check_order(const T (&arr)[I], size_t N) {
+  // C++11's constexpr functions must have a body consisting of just a
+  // return-statement.
+  return N > 1 ? ((ssl_cipher_id_cmp_inner(&arr[N - 2], &arr[N - 1]) < 0)
+                      ? check_order(arr, N - 1)
+                      : 0)
+               : 1;
+}
+
+static_assert(check_order(kCiphers, countof(kCiphers)) == 1,
+              "Ciphers are not sorted, bsearch won't work");
+
+const SSL_CIPHER *SSL_get_cipher_by_value(uint16_t value) {
+  SSL_CIPHER c;
+
+  c.id = 0x03000000L | value;
+  return reinterpret_cast<const SSL_CIPHER *>(bsearch(
+      &c, kCiphers, OPENSSL_ARRAY_SIZE(kCiphers), sizeof(SSL_CIPHER),
+      ssl_cipher_id_cmp));
+}
+
+uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *cipher) { return cipher->id; }
+
+uint16_t SSL_CIPHER_get_value(const SSL_CIPHER *cipher) {
+  return static_cast<uint16_t>(cipher->id);
+}
+
+int SSL_CIPHER_is_aead(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_mac & SSL_AEAD) != 0;
+}
+
+int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_enc) {
+    case SSL_eNULL:
+      return NID_undef;
+    case SSL_3DES:
+      return NID_des_ede3_cbc;
+    case SSL_AES128:
+      return NID_aes_128_cbc;
+    case SSL_AES256:
+      return NID_aes_256_cbc;
+    case SSL_AES128GCM:
+      return NID_aes_128_gcm;
+    case SSL_AES256GCM:
+      return NID_aes_256_gcm;
+    case SSL_CHACHA20POLY1305:
+      return NID_chacha20_poly1305;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_mac) {
+    case SSL_AEAD:
+      return NID_undef;
+    case SSL_SHA1:
+      return NID_sha1;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_mkey) {
+    case SSL_kRSA:
+      return NID_kx_rsa;
+    case SSL_kECDHE:
+      return NID_kx_ecdhe;
+    case SSL_kPSK:
+      return NID_kx_psk;
+    case SSL_kGENERIC:
+      return NID_kx_any;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_auth) {
+    case SSL_aRSA:
+      return NID_auth_rsa;
+    case SSL_aECDSA:
+      return NID_auth_ecdsa;
+    case SSL_aPSK:
+      return NID_auth_psk;
+    case SSL_aGENERIC:
+      return NID_auth_any;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_get_prf_nid(const SSL_CIPHER *cipher) {
+  switch (cipher->algorithm_prf) {
+    case SSL_HANDSHAKE_MAC_DEFAULT:
+      return NID_md5_sha1;
+    case SSL_HANDSHAKE_MAC_SHA256:
+      return NID_sha256;
+    case SSL_HANDSHAKE_MAC_SHA384:
+      return NID_sha384;
+  }
+  assert(0);
+  return NID_undef;
+}
+
+int SSL_CIPHER_is_block_cipher(const SSL_CIPHER *cipher) {
+  return (cipher->algorithm_enc & SSL_eNULL) == 0 &&
+      cipher->algorithm_mac != SSL_AEAD;
+}
+
+uint16_t SSL_CIPHER_get_min_version(const SSL_CIPHER *cipher) {
+  if (cipher->algorithm_mkey == SSL_kGENERIC ||
+      cipher->algorithm_auth == SSL_aGENERIC) {
+    return TLS1_3_VERSION;
+  }
+
+  if (cipher->algorithm_prf != SSL_HANDSHAKE_MAC_DEFAULT) {
+    // Cipher suites before TLS 1.2 use the default PRF, while all those added
+    // afterwards specify a particular hash.
+    return TLS1_2_VERSION;
+  }
+  return SSL3_VERSION;
+}
+
+uint16_t SSL_CIPHER_get_max_version(const SSL_CIPHER *cipher) {
+  if (cipher->algorithm_mkey == SSL_kGENERIC ||
+      cipher->algorithm_auth == SSL_aGENERIC) {
+    return TLS1_3_VERSION;
+  }
+  return TLS1_2_VERSION;
+}
+
+// return the actual cipher being used
+const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher) {
+  if (cipher != NULL) {
+    return cipher->name;
+  }
+
+  return "(NONE)";
+}
+
+const char *SSL_CIPHER_standard_name(const SSL_CIPHER *cipher) {
+  return cipher->standard_name;
+}
+
+const char *SSL_CIPHER_get_kx_name(const SSL_CIPHER *cipher) {
+  if (cipher == NULL) {
+    return "";
+  }
+
+  switch (cipher->algorithm_mkey) {
+    case SSL_kRSA:
+      return "RSA";
+
+    case SSL_kECDHE:
+      switch (cipher->algorithm_auth) {
+        case SSL_aECDSA:
+          return "ECDHE_ECDSA";
+        case SSL_aRSA:
+          return "ECDHE_RSA";
+        case SSL_aPSK:
+          return "ECDHE_PSK";
+        default:
+          assert(0);
+          return "UNKNOWN";
+      }
+
+    case SSL_kPSK:
+      assert(cipher->algorithm_auth == SSL_aPSK);
+      return "PSK";
+
+    case SSL_kGENERIC:
+      assert(cipher->algorithm_auth == SSL_aGENERIC);
+      return "GENERIC";
+
+    default:
+      assert(0);
+      return "UNKNOWN";
+  }
+}
+
+char *SSL_CIPHER_get_rfc_name(const SSL_CIPHER *cipher) {
+  if (cipher == NULL) {
+    return NULL;
+  }
+
+  return OPENSSL_strdup(SSL_CIPHER_standard_name(cipher));
+}
+
+int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher, int *out_alg_bits) {
+  if (cipher == NULL) {
+    return 0;
+  }
+
+  int alg_bits, strength_bits;
+  switch (cipher->algorithm_enc) {
+    case SSL_AES128:
+    case SSL_AES128GCM:
+      alg_bits = 128;
+      strength_bits = 128;
+      break;
+
+    case SSL_AES256:
+    case SSL_AES256GCM:
+    case SSL_CHACHA20POLY1305:
+      alg_bits = 256;
+      strength_bits = 256;
+      break;
+
+    case SSL_3DES:
+      alg_bits = 168;
+      strength_bits = 112;
+      break;
+
+    case SSL_eNULL:
+      alg_bits = 0;
+      strength_bits = 0;
+      break;
+
+    default:
+      assert(0);
+      alg_bits = 0;
+      strength_bits = 0;
+  }
+
+  if (out_alg_bits != NULL) {
+    *out_alg_bits = alg_bits;
+  }
+  return strength_bits;
+}
+
+const char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf,
+                                   int len) {
+  const char *kx, *au, *enc, *mac;
+  uint32_t alg_mkey, alg_auth, alg_enc, alg_mac;
+
+  alg_mkey = cipher->algorithm_mkey;
+  alg_auth = cipher->algorithm_auth;
+  alg_enc = cipher->algorithm_enc;
+  alg_mac = cipher->algorithm_mac;
+
+  switch (alg_mkey) {
+    case SSL_kRSA:
+      kx = "RSA";
+      break;
+
+    case SSL_kECDHE:
+      kx = "ECDH";
+      break;
+
+    case SSL_kPSK:
+      kx = "PSK";
+      break;
+
+    case SSL_kGENERIC:
+      kx = "GENERIC";
+      break;
+
+    default:
+      kx = "unknown";
+  }
+
+  switch (alg_auth) {
+    case SSL_aRSA:
+      au = "RSA";
+      break;
+
+    case SSL_aECDSA:
+      au = "ECDSA";
+      break;
+
+    case SSL_aPSK:
+      au = "PSK";
+      break;
+
+    case SSL_aGENERIC:
+      au = "GENERIC";
+      break;
+
+    default:
+      au = "unknown";
+      break;
+  }
+
+  switch (alg_enc) {
+    case SSL_3DES:
+      enc = "3DES(168)";
+      break;
+
+    case SSL_AES128:
+      enc = "AES(128)";
+      break;
+
+    case SSL_AES256:
+      enc = "AES(256)";
+      break;
+
+    case SSL_AES128GCM:
+      enc = "AESGCM(128)";
+      break;
+
+    case SSL_AES256GCM:
+      enc = "AESGCM(256)";
+      break;
+
+    case SSL_CHACHA20POLY1305:
+      enc = "ChaCha20-Poly1305";
+      break;
+
+    case SSL_eNULL:
+      enc="None";
+      break;
+
+    default:
+      enc = "unknown";
+      break;
+  }
+
+  switch (alg_mac) {
+    case SSL_SHA1:
+      mac = "SHA1";
+      break;
+
+    case SSL_AEAD:
+      mac = "AEAD";
+      break;
+
+    default:
+      mac = "unknown";
+      break;
+  }
+
+  if (buf == NULL) {
+    len = 128;
+    buf = (char *)OPENSSL_malloc(len);
+    if (buf == NULL) {
+      return NULL;
+    }
+  } else if (len < 128) {
+    return "Buffer too small";
+  }
+
+  BIO_snprintf(buf, len, "%-23s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n",
+               cipher->name, kx, au, enc, mac);
+  return buf;
+}
+
+const char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher) {
+  return "TLSv1/SSLv3";
+}
+
+STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) { return NULL; }
+
+int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) { return 1; }
+
+const char *SSL_COMP_get_name(const COMP_METHOD *comp) { return NULL; }
+
+const char *SSL_COMP_get0_name(const SSL_COMP *comp) { return comp->name; }
+
+int SSL_COMP_get_id(const SSL_COMP *comp) { return comp->id; }
+
+void SSL_COMP_free_compression_methods(void) {}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc
new file mode 100644
index 0000000..1656fb2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc	
@@ -0,0 +1,585 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl_grpc/ssl.h>
+
+#include <errno.h>
+#include <string.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bio.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+#include "internal.h"
+
+
+static int xname_cmp(const X509_NAME **a, const X509_NAME **b) {
+  return X509_NAME_cmp(*a, *b);
+}
+
+// TODO(davidben): Is there any reason this doesn't call
+// |SSL_add_file_cert_subjects_to_stack|?
+STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) {
+  BIO *in;
+  X509 *x = NULL;
+  X509_NAME *xn = NULL;
+  STACK_OF(X509_NAME) *ret = NULL, *sk;
+
+  sk = sk_X509_NAME_new(xname_cmp);
+  in = BIO_new(BIO_s_file());
+
+  if (sk == NULL || in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (!BIO_read_filename(in, file)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
+      break;
+    }
+    if (ret == NULL) {
+      ret = sk_X509_NAME_new_null();
+      if (ret == NULL) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+    }
+    xn = X509_get_subject_name(x);
+    if (xn == NULL) {
+      goto err;
+    }
+
+    // Check for duplicates.
+    sk_X509_NAME_sort(sk);
+    if (sk_X509_NAME_find(sk, NULL, xn)) {
+      continue;
+    }
+
+    xn = X509_NAME_dup(xn);
+    if (xn == NULL ||
+        !sk_X509_NAME_push(sk /* non-owning */, xn) ||
+        !sk_X509_NAME_push(ret /* owning */, xn)) {
+      X509_NAME_free(xn);
+      goto err;
+    }
+  }
+
+  if (0) {
+  err:
+    sk_X509_NAME_pop_free(ret, X509_NAME_free);
+    ret = NULL;
+  }
+
+  sk_X509_NAME_free(sk);
+  BIO_free(in);
+  X509_free(x);
+  if (ret != NULL) {
+    ERR_clear_error();
+  }
+  return ret;
+}
+
+int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
+                                        const char *file) {
+  BIO *in;
+  X509 *x = NULL;
+  X509_NAME *xn = NULL;
+  int ret = 0;
+  int (*oldcmp)(const X509_NAME **a, const X509_NAME **b);
+
+  oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
+  in = BIO_new(BIO_s_file());
+
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (!BIO_read_filename(in, file)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
+      break;
+    }
+    xn = X509_get_subject_name(x);
+    if (xn == NULL) {
+      goto err;
+    }
+
+    // Check for duplicates.
+    sk_X509_NAME_sort(stack);
+    if (sk_X509_NAME_find(stack, NULL, xn)) {
+      continue;
+    }
+
+    xn = X509_NAME_dup(xn);
+    if (xn == NULL ||
+        !sk_X509_NAME_push(stack, xn)) {
+      X509_NAME_free(xn);
+      goto err;
+    }
+  }
+
+  ERR_clear_error();
+  ret = 1;
+
+err:
+  BIO_free(in);
+  X509_free(x);
+
+  (void) sk_X509_NAME_set_cmp_func(stack, oldcmp);
+
+  return ret;
+}
+
+int SSL_use_certificate_file(SSL *ssl, const char *file, int type) {
+  int reason_code;
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    x = d2i_X509_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    x = PEM_read_bio_X509(in, NULL, ssl->ctx->default_passwd_callback,
+                          ssl->ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+
+  ret = SSL_use_certificate(ssl, x);
+
+end:
+  X509_free(x);
+  BIO_free(in);
+
+  return ret;
+}
+
+int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  RSA *rsa = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    rsa = d2i_RSAPrivateKey_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    rsa =
+        PEM_read_bio_RSAPrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
+                                   ssl->ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_use_RSAPrivateKey(ssl, rsa);
+  RSA_free(rsa);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  EVP_PKEY *pkey = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    pkey = PEM_read_bio_PrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
+                                   ssl->ctx->default_passwd_callback_userdata);
+  } else if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    pkey = d2i_PrivateKey_bio(in, NULL);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_use_PrivateKey(ssl, pkey);
+  EVP_PKEY_free(pkey);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code;
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    x = d2i_X509_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
+                          ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+
+  ret = SSL_CTX_use_certificate(ctx, x);
+
+end:
+  X509_free(x);
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  RSA *rsa = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    rsa = d2i_RSAPrivateKey_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    rsa = PEM_read_bio_RSAPrivateKey(in, NULL, ctx->default_passwd_callback,
+                                     ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
+  RSA_free(rsa);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  EVP_PKEY *pkey = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    pkey = PEM_read_bio_PrivateKey(in, NULL, ctx->default_passwd_callback,
+                                   ctx->default_passwd_callback_userdata);
+  } else if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    pkey = d2i_PrivateKey_bio(in, NULL);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_CTX_use_PrivateKey(ctx, pkey);
+  EVP_PKEY_free(pkey);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+// Read a file that contains our certificate in "PEM" format, possibly followed
+// by a sequence of CA certificates that should be sent to the peer in the
+// Certificate message.
+int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file) {
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  ERR_clear_error();  // clear error stack for SSL_CTX_use_certificate()
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback,
+                            ctx->default_passwd_callback_userdata);
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PEM_LIB);
+    goto end;
+  }
+
+  ret = SSL_CTX_use_certificate(ctx, x);
+
+  if (ERR_peek_error() != 0) {
+    ret = 0;  // Key/certificate mismatch doesn't imply ret==0 ...
+  }
+
+  if (ret) {
+    // If we could set up our certificate, now proceed to the CA
+    // certificates.
+    X509 *ca;
+    int r;
+    uint32_t err;
+
+    SSL_CTX_clear_chain_certs(ctx);
+
+    while ((ca = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
+                                   ctx->default_passwd_callback_userdata)) !=
+           NULL) {
+      r = SSL_CTX_add0_chain_cert(ctx, ca);
+      if (!r) {
+        X509_free(ca);
+        ret = 0;
+        goto end;
+      }
+      // Note that we must not free r if it was successfully added to the chain
+      // (while we must free the main certificate, since its reference count is
+      // increased by SSL_CTX_use_certificate).
+    }
+
+    // When the while loop ends, it's usually just EOF.
+    err = ERR_peek_last_error();
+    if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
+        ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
+      ERR_clear_error();
+    } else {
+      ret = 0;  // some real error
+    }
+  }
+
+end:
+  X509_free(x);
+  BIO_free(in);
+  return ret;
+}
+
+void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) {
+  ctx->default_passwd_callback = cb;
+}
+
+pem_password_cb *SSL_CTX_get_default_passwd_cb(const SSL_CTX *ctx) {
+  return ctx->default_passwd_callback;
+}
+
+void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *data) {
+  ctx->default_passwd_callback_userdata = data;
+}
+
+void *SSL_CTX_get_default_passwd_cb_userdata(const SSL_CTX *ctx) {
+  return ctx->default_passwd_callback_userdata;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc.grpc_back
new file mode 100644
index 0000000..ca4b0be
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_file.cc.grpc_back	
@@ -0,0 +1,585 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/ssl.h>
+
+#include <errno.h>
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/pem.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+#include "internal.h"
+
+
+static int xname_cmp(const X509_NAME **a, const X509_NAME **b) {
+  return X509_NAME_cmp(*a, *b);
+}
+
+// TODO(davidben): Is there any reason this doesn't call
+// |SSL_add_file_cert_subjects_to_stack|?
+STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file) {
+  BIO *in;
+  X509 *x = NULL;
+  X509_NAME *xn = NULL;
+  STACK_OF(X509_NAME) *ret = NULL, *sk;
+
+  sk = sk_X509_NAME_new(xname_cmp);
+  in = BIO_new(BIO_s_file());
+
+  if (sk == NULL || in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (!BIO_read_filename(in, file)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
+      break;
+    }
+    if (ret == NULL) {
+      ret = sk_X509_NAME_new_null();
+      if (ret == NULL) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        goto err;
+      }
+    }
+    xn = X509_get_subject_name(x);
+    if (xn == NULL) {
+      goto err;
+    }
+
+    // Check for duplicates.
+    sk_X509_NAME_sort(sk);
+    if (sk_X509_NAME_find(sk, NULL, xn)) {
+      continue;
+    }
+
+    xn = X509_NAME_dup(xn);
+    if (xn == NULL ||
+        !sk_X509_NAME_push(sk /* non-owning */, xn) ||
+        !sk_X509_NAME_push(ret /* owning */, xn)) {
+      X509_NAME_free(xn);
+      goto err;
+    }
+  }
+
+  if (0) {
+  err:
+    sk_X509_NAME_pop_free(ret, X509_NAME_free);
+    ret = NULL;
+  }
+
+  sk_X509_NAME_free(sk);
+  BIO_free(in);
+  X509_free(x);
+  if (ret != NULL) {
+    ERR_clear_error();
+  }
+  return ret;
+}
+
+int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
+                                        const char *file) {
+  BIO *in;
+  X509 *x = NULL;
+  X509_NAME *xn = NULL;
+  int ret = 0;
+  int (*oldcmp)(const X509_NAME **a, const X509_NAME **b);
+
+  oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
+  in = BIO_new(BIO_s_file());
+
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    goto err;
+  }
+
+  if (!BIO_read_filename(in, file)) {
+    goto err;
+  }
+
+  for (;;) {
+    if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL) {
+      break;
+    }
+    xn = X509_get_subject_name(x);
+    if (xn == NULL) {
+      goto err;
+    }
+
+    // Check for duplicates.
+    sk_X509_NAME_sort(stack);
+    if (sk_X509_NAME_find(stack, NULL, xn)) {
+      continue;
+    }
+
+    xn = X509_NAME_dup(xn);
+    if (xn == NULL ||
+        !sk_X509_NAME_push(stack, xn)) {
+      X509_NAME_free(xn);
+      goto err;
+    }
+  }
+
+  ERR_clear_error();
+  ret = 1;
+
+err:
+  BIO_free(in);
+  X509_free(x);
+
+  (void) sk_X509_NAME_set_cmp_func(stack, oldcmp);
+
+  return ret;
+}
+
+int SSL_use_certificate_file(SSL *ssl, const char *file, int type) {
+  int reason_code;
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    x = d2i_X509_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    x = PEM_read_bio_X509(in, NULL, ssl->ctx->default_passwd_callback,
+                          ssl->ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+
+  ret = SSL_use_certificate(ssl, x);
+
+end:
+  X509_free(x);
+  BIO_free(in);
+
+  return ret;
+}
+
+int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  RSA *rsa = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    rsa = d2i_RSAPrivateKey_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    rsa =
+        PEM_read_bio_RSAPrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
+                                   ssl->ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_use_RSAPrivateKey(ssl, rsa);
+  RSA_free(rsa);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  EVP_PKEY *pkey = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    pkey = PEM_read_bio_PrivateKey(in, NULL, ssl->ctx->default_passwd_callback,
+                                   ssl->ctx->default_passwd_callback_userdata);
+  } else if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    pkey = d2i_PrivateKey_bio(in, NULL);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_use_PrivateKey(ssl, pkey);
+  EVP_PKEY_free(pkey);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code;
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    x = d2i_X509_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    x = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
+                          ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+
+  ret = SSL_CTX_use_certificate(ctx, x);
+
+end:
+  X509_free(x);
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  RSA *rsa = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    rsa = d2i_RSAPrivateKey_bio(in, NULL);
+  } else if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    rsa = PEM_read_bio_RSAPrivateKey(in, NULL, ctx->default_passwd_callback,
+                                     ctx->default_passwd_callback_userdata);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_CTX_use_RSAPrivateKey(ctx, rsa);
+  RSA_free(rsa);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type) {
+  int reason_code, ret = 0;
+  BIO *in;
+  EVP_PKEY *pkey = NULL;
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  if (type == SSL_FILETYPE_PEM) {
+    reason_code = ERR_R_PEM_LIB;
+    pkey = PEM_read_bio_PrivateKey(in, NULL, ctx->default_passwd_callback,
+                                   ctx->default_passwd_callback_userdata);
+  } else if (type == SSL_FILETYPE_ASN1) {
+    reason_code = ERR_R_ASN1_LIB;
+    pkey = d2i_PrivateKey_bio(in, NULL);
+  } else {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SSL_FILETYPE);
+    goto end;
+  }
+
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, reason_code);
+    goto end;
+  }
+  ret = SSL_CTX_use_PrivateKey(ctx, pkey);
+  EVP_PKEY_free(pkey);
+
+end:
+  BIO_free(in);
+  return ret;
+}
+
+// Read a file that contains our certificate in "PEM" format, possibly followed
+// by a sequence of CA certificates that should be sent to the peer in the
+// Certificate message.
+int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file) {
+  BIO *in;
+  int ret = 0;
+  X509 *x = NULL;
+
+  ERR_clear_error();  // clear error stack for SSL_CTX_use_certificate()
+
+  in = BIO_new(BIO_s_file());
+  if (in == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    goto end;
+  }
+
+  if (BIO_read_filename(in, file) <= 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SYS_LIB);
+    goto end;
+  }
+
+  x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback,
+                            ctx->default_passwd_callback_userdata);
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PEM_LIB);
+    goto end;
+  }
+
+  ret = SSL_CTX_use_certificate(ctx, x);
+
+  if (ERR_peek_error() != 0) {
+    ret = 0;  // Key/certificate mismatch doesn't imply ret==0 ...
+  }
+
+  if (ret) {
+    // If we could set up our certificate, now proceed to the CA
+    // certificates.
+    X509 *ca;
+    int r;
+    uint32_t err;
+
+    SSL_CTX_clear_chain_certs(ctx);
+
+    while ((ca = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback,
+                                   ctx->default_passwd_callback_userdata)) !=
+           NULL) {
+      r = SSL_CTX_add0_chain_cert(ctx, ca);
+      if (!r) {
+        X509_free(ca);
+        ret = 0;
+        goto end;
+      }
+      // Note that we must not free r if it was successfully added to the chain
+      // (while we must free the main certificate, since its reference count is
+      // increased by SSL_CTX_use_certificate).
+    }
+
+    // When the while loop ends, it's usually just EOF.
+    err = ERR_peek_last_error();
+    if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
+        ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
+      ERR_clear_error();
+    } else {
+      ret = 0;  // some real error
+    }
+  }
+
+end:
+  X509_free(x);
+  BIO_free(in);
+  return ret;
+}
+
+void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) {
+  ctx->default_passwd_callback = cb;
+}
+
+pem_password_cb *SSL_CTX_get_default_passwd_cb(const SSL_CTX *ctx) {
+  return ctx->default_passwd_callback;
+}
+
+void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *data) {
+  ctx->default_passwd_callback_userdata = data;
+}
+
+void *SSL_CTX_get_default_passwd_cb_userdata(const SSL_CTX *ctx) {
+  return ctx->default_passwd_callback_userdata;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc
new file mode 100644
index 0000000..059e856
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc	
@@ -0,0 +1,397 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/curve25519.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/hrss.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+BSSL_NAMESPACE_BEGIN
+
+namespace {
+
+class ECKeyShare : public SSLKeyShare {
+ public:
+  ECKeyShare(int nid, uint16_t group_id) : nid_(nid), group_id_(group_id) {}
+
+  uint16_t GroupID() const override { return group_id_; }
+
+  bool Offer(CBB *out) override {
+    assert(!private_key_);
+    // Set up a shared |BN_CTX| for all operations.
+    UniquePtr<BN_CTX> bn_ctx(BN_CTX_new());
+    if (!bn_ctx) {
+      return false;
+    }
+    BN_CTXScope scope(bn_ctx.get());
+
+    // Generate a private key.
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    private_key_.reset(BN_new());
+    if (!group || !private_key_ ||
+        !BN_rand_range_ex(private_key_.get(), 1,
+                          EC_GROUP_get0_order(group.get()))) {
+      return false;
+    }
+
+    // Compute the corresponding public key and serialize it.
+    UniquePtr<EC_POINT> public_key(EC_POINT_new(group.get()));
+    if (!public_key ||
+        !EC_POINT_mul(group.get(), public_key.get(), private_key_.get(), NULL,
+                      NULL, bn_ctx.get()) ||
+        !EC_POINT_point2cbb(out, group.get(), public_key.get(),
+                            POINT_CONVERSION_UNCOMPRESSED, bn_ctx.get())) {
+      return false;
+    }
+
+    return true;
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    assert(private_key_);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    // Set up a shared |BN_CTX| for all operations.
+    UniquePtr<BN_CTX> bn_ctx(BN_CTX_new());
+    if (!bn_ctx) {
+      return false;
+    }
+    BN_CTXScope scope(bn_ctx.get());
+
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    if (!group) {
+      return false;
+    }
+
+    UniquePtr<EC_POINT> peer_point(EC_POINT_new(group.get()));
+    UniquePtr<EC_POINT> result(EC_POINT_new(group.get()));
+    BIGNUM *x = BN_CTX_get(bn_ctx.get());
+    if (!peer_point || !result || !x) {
+      return false;
+    }
+
+    if (peer_key.empty() || peer_key[0] != POINT_CONVERSION_UNCOMPRESSED ||
+        !EC_POINT_oct2point(group.get(), peer_point.get(), peer_key.data(),
+                            peer_key.size(), bn_ctx.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    // Compute the x-coordinate of |peer_key| * |private_key_|.
+    if (!EC_POINT_mul(group.get(), result.get(), NULL, peer_point.get(),
+                      private_key_.get(), bn_ctx.get()) ||
+        !EC_POINT_get_affine_coordinates_GFp(group.get(), result.get(), x, NULL,
+                                             bn_ctx.get())) {
+      return false;
+    }
+
+    // Encode the x-coordinate left-padded with zeros.
+    Array<uint8_t> secret;
+    if (!secret.Init((EC_GROUP_get_degree(group.get()) + 7) / 8) ||
+        !BN_bn2bin_padded(secret.data(), secret.size(), x)) {
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Serialize(CBB *out) override {
+    assert(private_key_);
+    CBB cbb;
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    // Padding is added to avoid leaking the length.
+    size_t len = BN_num_bytes(EC_GROUP_get0_order(group.get()));
+    if (!CBB_add_asn1_uint64(out, group_id_) ||
+        !CBB_add_asn1(out, &cbb, CBS_ASN1_OCTETSTRING) ||
+        !BN_bn2cbb_padded(&cbb, len, private_key_.get()) ||
+        !CBB_flush(out)) {
+      return false;
+    }
+    return true;
+  }
+
+  bool Deserialize(CBS *in) override {
+    assert(!private_key_);
+    CBS private_key;
+    if (!CBS_get_asn1(in, &private_key, CBS_ASN1_OCTETSTRING)) {
+      return false;
+    }
+    private_key_.reset(BN_bin2bn(CBS_data(&private_key),
+                                 CBS_len(&private_key), nullptr));
+    return private_key_ != nullptr;
+  }
+
+ private:
+  UniquePtr<BIGNUM> private_key_;
+  int nid_;
+  uint16_t group_id_;
+};
+
+class X25519KeyShare : public SSLKeyShare {
+ public:
+  X25519KeyShare() {}
+
+  uint16_t GroupID() const override { return SSL_CURVE_X25519; }
+
+  bool Offer(CBB *out) override {
+    uint8_t public_key[32];
+    X25519_keypair(public_key, private_key_);
+    return !!CBB_add_bytes(out, public_key, sizeof(public_key));
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    Array<uint8_t> secret;
+    if (!secret.Init(32)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    if (peer_key.size() != 32 ||
+        !X25519(secret.data(), private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Serialize(CBB *out) override {
+    return (CBB_add_asn1_uint64(out, GroupID()) &&
+            CBB_add_asn1_octet_string(out, private_key_, sizeof(private_key_)));
+  }
+
+  bool Deserialize(CBS *in) override {
+    CBS key;
+    if (!CBS_get_asn1(in, &key, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&key) != sizeof(private_key_) ||
+        !CBS_copy_bytes(&key, private_key_, sizeof(private_key_))) {
+      return false;
+    }
+    return true;
+  }
+
+ private:
+  uint8_t private_key_[32];
+};
+
+class CECPQ2KeyShare : public SSLKeyShare {
+ public:
+  CECPQ2KeyShare() {}
+
+  uint16_t GroupID() const override { return SSL_CURVE_CECPQ2; }
+
+  bool Offer(CBB *out) override {
+    uint8_t x25519_public_key[32];
+    X25519_keypair(x25519_public_key, x25519_private_key_);
+
+    uint8_t hrss_entropy[HRSS_GENERATE_KEY_BYTES];
+    HRSS_public_key hrss_public_key;
+    RAND_bytes(hrss_entropy, sizeof(hrss_entropy));
+    HRSS_generate_key(&hrss_public_key, &hrss_private_key_, hrss_entropy);
+
+    uint8_t hrss_public_key_bytes[HRSS_PUBLIC_KEY_BYTES];
+    HRSS_marshal_public_key(hrss_public_key_bytes, &hrss_public_key);
+
+    if (!CBB_add_bytes(out, x25519_public_key, sizeof(x25519_public_key)) ||
+        !CBB_add_bytes(out, hrss_public_key_bytes,
+                       sizeof(hrss_public_key_bytes))) {
+      return false;
+    }
+
+    return true;
+  }
+
+  bool Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+              uint8_t *out_alert, Span<const uint8_t> peer_key) override {
+    Array<uint8_t> secret;
+    if (!secret.Init(32 + HRSS_KEY_BYTES)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    uint8_t x25519_public_key[32];
+    X25519_keypair(x25519_public_key, x25519_private_key_);
+
+    HRSS_public_key peer_public_key;
+    if (peer_key.size() != 32 + HRSS_PUBLIC_KEY_BYTES ||
+        !HRSS_parse_public_key(&peer_public_key, peer_key.data() + 32) ||
+        !X25519(secret.data(), x25519_private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    uint8_t ciphertext[HRSS_CIPHERTEXT_BYTES];
+    uint8_t entropy[HRSS_ENCAP_BYTES];
+    RAND_bytes(entropy, sizeof(entropy));
+    HRSS_encap(ciphertext, secret.data() + 32, &peer_public_key, entropy);
+
+    if (!CBB_add_bytes(out_public_key, x25519_public_key,
+                       sizeof(x25519_public_key)) ||
+        !CBB_add_bytes(out_public_key, ciphertext, sizeof(ciphertext))) {
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    Array<uint8_t> secret;
+    if (!secret.Init(32 + HRSS_KEY_BYTES)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    if (peer_key.size() != 32 + HRSS_CIPHERTEXT_BYTES ||
+        !X25519(secret.data(), x25519_private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    HRSS_decap(secret.data() + 32, &hrss_private_key_, peer_key.data() + 32,
+               peer_key.size() - 32);
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+ private:
+  uint8_t x25519_private_key_[32];
+  HRSS_private_key hrss_private_key_;
+};
+
+CONSTEXPR_ARRAY NamedGroup kNamedGroups[] = {
+    {NID_secp224r1, SSL_CURVE_SECP224R1, "P-224", "secp224r1"},
+    {NID_X9_62_prime256v1, SSL_CURVE_SECP256R1, "P-256", "prime256v1"},
+    {NID_secp384r1, SSL_CURVE_SECP384R1, "P-384", "secp384r1"},
+    {NID_secp521r1, SSL_CURVE_SECP521R1, "P-521", "secp521r1"},
+    {NID_X25519, SSL_CURVE_X25519, "X25519", "x25519"},
+    {NID_CECPQ2, SSL_CURVE_CECPQ2, "CECPQ2", "CECPQ2"},
+};
+
+}  // namespace
+
+Span<const NamedGroup> NamedGroups() {
+  return MakeConstSpan(kNamedGroups, OPENSSL_ARRAY_SIZE(kNamedGroups));
+}
+
+UniquePtr<SSLKeyShare> SSLKeyShare::Create(uint16_t group_id) {
+  switch (group_id) {
+    case SSL_CURVE_SECP224R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp224r1, SSL_CURVE_SECP224R1));
+    case SSL_CURVE_SECP256R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_X9_62_prime256v1, SSL_CURVE_SECP256R1));
+    case SSL_CURVE_SECP384R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp384r1, SSL_CURVE_SECP384R1));
+    case SSL_CURVE_SECP521R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp521r1, SSL_CURVE_SECP521R1));
+    case SSL_CURVE_X25519:
+      return UniquePtr<SSLKeyShare>(New<X25519KeyShare>());
+    case SSL_CURVE_CECPQ2:
+      return UniquePtr<SSLKeyShare>(New<CECPQ2KeyShare>());
+    default:
+      return nullptr;
+  }
+}
+
+UniquePtr<SSLKeyShare> SSLKeyShare::Create(CBS *in) {
+  uint64_t group;
+  if (!CBS_get_asn1_uint64(in, &group) || group > 0xffff) {
+    return nullptr;
+  }
+  UniquePtr<SSLKeyShare> key_share = Create(static_cast<uint16_t>(group));
+  if (!key_share || !key_share->Deserialize(in)) {
+    return nullptr;
+  }
+  return key_share;
+}
+
+
+bool SSLKeyShare::Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+                         uint8_t *out_alert, Span<const uint8_t> peer_key) {
+  *out_alert = SSL_AD_INTERNAL_ERROR;
+  return Offer(out_public_key) &&
+         Finish(out_secret, out_alert, peer_key);
+}
+
+bool ssl_nid_to_group_id(uint16_t *out_group_id, int nid) {
+  for (const auto &group : kNamedGroups) {
+    if (group.nid == nid) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool ssl_name_to_group_id(uint16_t *out_group_id, const char *name, size_t len) {
+  for (const auto &group : kNamedGroups) {
+    if (len == strlen(group.name) &&
+        !strncmp(group.name, name, len)) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+    if (len == strlen(group.alias) &&
+        !strncmp(group.alias, name, len)) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+  }
+  return false;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+const char* SSL_get_curve_name(uint16_t group_id) {
+  for (const auto &group : kNamedGroups) {
+    if (group.group_id == group_id) {
+      return group.name;
+    }
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc.grpc_back
new file mode 100644
index 0000000..6cac3cf
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_key_share.cc.grpc_back	
@@ -0,0 +1,397 @@
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bn.h>
+#include <openssl/bytestring.h>
+#include <openssl/curve25519.h>
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/hrss.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+BSSL_NAMESPACE_BEGIN
+
+namespace {
+
+class ECKeyShare : public SSLKeyShare {
+ public:
+  ECKeyShare(int nid, uint16_t group_id) : nid_(nid), group_id_(group_id) {}
+
+  uint16_t GroupID() const override { return group_id_; }
+
+  bool Offer(CBB *out) override {
+    assert(!private_key_);
+    // Set up a shared |BN_CTX| for all operations.
+    UniquePtr<BN_CTX> bn_ctx(BN_CTX_new());
+    if (!bn_ctx) {
+      return false;
+    }
+    BN_CTXScope scope(bn_ctx.get());
+
+    // Generate a private key.
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    private_key_.reset(BN_new());
+    if (!group || !private_key_ ||
+        !BN_rand_range_ex(private_key_.get(), 1,
+                          EC_GROUP_get0_order(group.get()))) {
+      return false;
+    }
+
+    // Compute the corresponding public key and serialize it.
+    UniquePtr<EC_POINT> public_key(EC_POINT_new(group.get()));
+    if (!public_key ||
+        !EC_POINT_mul(group.get(), public_key.get(), private_key_.get(), NULL,
+                      NULL, bn_ctx.get()) ||
+        !EC_POINT_point2cbb(out, group.get(), public_key.get(),
+                            POINT_CONVERSION_UNCOMPRESSED, bn_ctx.get())) {
+      return false;
+    }
+
+    return true;
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    assert(private_key_);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    // Set up a shared |BN_CTX| for all operations.
+    UniquePtr<BN_CTX> bn_ctx(BN_CTX_new());
+    if (!bn_ctx) {
+      return false;
+    }
+    BN_CTXScope scope(bn_ctx.get());
+
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    if (!group) {
+      return false;
+    }
+
+    UniquePtr<EC_POINT> peer_point(EC_POINT_new(group.get()));
+    UniquePtr<EC_POINT> result(EC_POINT_new(group.get()));
+    BIGNUM *x = BN_CTX_get(bn_ctx.get());
+    if (!peer_point || !result || !x) {
+      return false;
+    }
+
+    if (peer_key.empty() || peer_key[0] != POINT_CONVERSION_UNCOMPRESSED ||
+        !EC_POINT_oct2point(group.get(), peer_point.get(), peer_key.data(),
+                            peer_key.size(), bn_ctx.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    // Compute the x-coordinate of |peer_key| * |private_key_|.
+    if (!EC_POINT_mul(group.get(), result.get(), NULL, peer_point.get(),
+                      private_key_.get(), bn_ctx.get()) ||
+        !EC_POINT_get_affine_coordinates_GFp(group.get(), result.get(), x, NULL,
+                                             bn_ctx.get())) {
+      return false;
+    }
+
+    // Encode the x-coordinate left-padded with zeros.
+    Array<uint8_t> secret;
+    if (!secret.Init((EC_GROUP_get_degree(group.get()) + 7) / 8) ||
+        !BN_bn2bin_padded(secret.data(), secret.size(), x)) {
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Serialize(CBB *out) override {
+    assert(private_key_);
+    CBB cbb;
+    UniquePtr<EC_GROUP> group(EC_GROUP_new_by_curve_name(nid_));
+    // Padding is added to avoid leaking the length.
+    size_t len = BN_num_bytes(EC_GROUP_get0_order(group.get()));
+    if (!CBB_add_asn1_uint64(out, group_id_) ||
+        !CBB_add_asn1(out, &cbb, CBS_ASN1_OCTETSTRING) ||
+        !BN_bn2cbb_padded(&cbb, len, private_key_.get()) ||
+        !CBB_flush(out)) {
+      return false;
+    }
+    return true;
+  }
+
+  bool Deserialize(CBS *in) override {
+    assert(!private_key_);
+    CBS private_key;
+    if (!CBS_get_asn1(in, &private_key, CBS_ASN1_OCTETSTRING)) {
+      return false;
+    }
+    private_key_.reset(BN_bin2bn(CBS_data(&private_key),
+                                 CBS_len(&private_key), nullptr));
+    return private_key_ != nullptr;
+  }
+
+ private:
+  UniquePtr<BIGNUM> private_key_;
+  int nid_;
+  uint16_t group_id_;
+};
+
+class X25519KeyShare : public SSLKeyShare {
+ public:
+  X25519KeyShare() {}
+
+  uint16_t GroupID() const override { return SSL_CURVE_X25519; }
+
+  bool Offer(CBB *out) override {
+    uint8_t public_key[32];
+    X25519_keypair(public_key, private_key_);
+    return !!CBB_add_bytes(out, public_key, sizeof(public_key));
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    Array<uint8_t> secret;
+    if (!secret.Init(32)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    if (peer_key.size() != 32 ||
+        !X25519(secret.data(), private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Serialize(CBB *out) override {
+    return (CBB_add_asn1_uint64(out, GroupID()) &&
+            CBB_add_asn1_octet_string(out, private_key_, sizeof(private_key_)));
+  }
+
+  bool Deserialize(CBS *in) override {
+    CBS key;
+    if (!CBS_get_asn1(in, &key, CBS_ASN1_OCTETSTRING) ||
+        CBS_len(&key) != sizeof(private_key_) ||
+        !CBS_copy_bytes(&key, private_key_, sizeof(private_key_))) {
+      return false;
+    }
+    return true;
+  }
+
+ private:
+  uint8_t private_key_[32];
+};
+
+class CECPQ2KeyShare : public SSLKeyShare {
+ public:
+  CECPQ2KeyShare() {}
+
+  uint16_t GroupID() const override { return SSL_CURVE_CECPQ2; }
+
+  bool Offer(CBB *out) override {
+    uint8_t x25519_public_key[32];
+    X25519_keypair(x25519_public_key, x25519_private_key_);
+
+    uint8_t hrss_entropy[HRSS_GENERATE_KEY_BYTES];
+    HRSS_public_key hrss_public_key;
+    RAND_bytes(hrss_entropy, sizeof(hrss_entropy));
+    HRSS_generate_key(&hrss_public_key, &hrss_private_key_, hrss_entropy);
+
+    uint8_t hrss_public_key_bytes[HRSS_PUBLIC_KEY_BYTES];
+    HRSS_marshal_public_key(hrss_public_key_bytes, &hrss_public_key);
+
+    if (!CBB_add_bytes(out, x25519_public_key, sizeof(x25519_public_key)) ||
+        !CBB_add_bytes(out, hrss_public_key_bytes,
+                       sizeof(hrss_public_key_bytes))) {
+      return false;
+    }
+
+    return true;
+  }
+
+  bool Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+              uint8_t *out_alert, Span<const uint8_t> peer_key) override {
+    Array<uint8_t> secret;
+    if (!secret.Init(32 + HRSS_KEY_BYTES)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    uint8_t x25519_public_key[32];
+    X25519_keypair(x25519_public_key, x25519_private_key_);
+
+    HRSS_public_key peer_public_key;
+    if (peer_key.size() != 32 + HRSS_PUBLIC_KEY_BYTES ||
+        !HRSS_parse_public_key(&peer_public_key, peer_key.data() + 32) ||
+        !X25519(secret.data(), x25519_private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    uint8_t ciphertext[HRSS_CIPHERTEXT_BYTES];
+    uint8_t entropy[HRSS_ENCAP_BYTES];
+    RAND_bytes(entropy, sizeof(entropy));
+    HRSS_encap(ciphertext, secret.data() + 32, &peer_public_key, entropy);
+
+    if (!CBB_add_bytes(out_public_key, x25519_public_key,
+                       sizeof(x25519_public_key)) ||
+        !CBB_add_bytes(out_public_key, ciphertext, sizeof(ciphertext))) {
+      return false;
+    }
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+  bool Finish(Array<uint8_t> *out_secret, uint8_t *out_alert,
+              Span<const uint8_t> peer_key) override {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+
+    Array<uint8_t> secret;
+    if (!secret.Init(32 + HRSS_KEY_BYTES)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    if (peer_key.size() != 32 + HRSS_CIPHERTEXT_BYTES ||
+        !X25519(secret.data(), x25519_private_key_, peer_key.data())) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECPOINT);
+      return false;
+    }
+
+    HRSS_decap(secret.data() + 32, &hrss_private_key_, peer_key.data() + 32,
+               peer_key.size() - 32);
+
+    *out_secret = std::move(secret);
+    return true;
+  }
+
+ private:
+  uint8_t x25519_private_key_[32];
+  HRSS_private_key hrss_private_key_;
+};
+
+CONSTEXPR_ARRAY NamedGroup kNamedGroups[] = {
+    {NID_secp224r1, SSL_CURVE_SECP224R1, "P-224", "secp224r1"},
+    {NID_X9_62_prime256v1, SSL_CURVE_SECP256R1, "P-256", "prime256v1"},
+    {NID_secp384r1, SSL_CURVE_SECP384R1, "P-384", "secp384r1"},
+    {NID_secp521r1, SSL_CURVE_SECP521R1, "P-521", "secp521r1"},
+    {NID_X25519, SSL_CURVE_X25519, "X25519", "x25519"},
+    {NID_CECPQ2, SSL_CURVE_CECPQ2, "CECPQ2", "CECPQ2"},
+};
+
+}  // namespace
+
+Span<const NamedGroup> NamedGroups() {
+  return MakeConstSpan(kNamedGroups, OPENSSL_ARRAY_SIZE(kNamedGroups));
+}
+
+UniquePtr<SSLKeyShare> SSLKeyShare::Create(uint16_t group_id) {
+  switch (group_id) {
+    case SSL_CURVE_SECP224R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp224r1, SSL_CURVE_SECP224R1));
+    case SSL_CURVE_SECP256R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_X9_62_prime256v1, SSL_CURVE_SECP256R1));
+    case SSL_CURVE_SECP384R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp384r1, SSL_CURVE_SECP384R1));
+    case SSL_CURVE_SECP521R1:
+      return UniquePtr<SSLKeyShare>(
+          New<ECKeyShare>(NID_secp521r1, SSL_CURVE_SECP521R1));
+    case SSL_CURVE_X25519:
+      return UniquePtr<SSLKeyShare>(New<X25519KeyShare>());
+    case SSL_CURVE_CECPQ2:
+      return UniquePtr<SSLKeyShare>(New<CECPQ2KeyShare>());
+    default:
+      return nullptr;
+  }
+}
+
+UniquePtr<SSLKeyShare> SSLKeyShare::Create(CBS *in) {
+  uint64_t group;
+  if (!CBS_get_asn1_uint64(in, &group) || group > 0xffff) {
+    return nullptr;
+  }
+  UniquePtr<SSLKeyShare> key_share = Create(static_cast<uint16_t>(group));
+  if (!key_share || !key_share->Deserialize(in)) {
+    return nullptr;
+  }
+  return key_share;
+}
+
+
+bool SSLKeyShare::Accept(CBB *out_public_key, Array<uint8_t> *out_secret,
+                         uint8_t *out_alert, Span<const uint8_t> peer_key) {
+  *out_alert = SSL_AD_INTERNAL_ERROR;
+  return Offer(out_public_key) &&
+         Finish(out_secret, out_alert, peer_key);
+}
+
+bool ssl_nid_to_group_id(uint16_t *out_group_id, int nid) {
+  for (const auto &group : kNamedGroups) {
+    if (group.nid == nid) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool ssl_name_to_group_id(uint16_t *out_group_id, const char *name, size_t len) {
+  for (const auto &group : kNamedGroups) {
+    if (len == strlen(group.name) &&
+        !strncmp(group.name, name, len)) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+    if (len == strlen(group.alias) &&
+        !strncmp(group.alias, name, len)) {
+      *out_group_id = group.group_id;
+      return true;
+    }
+  }
+  return false;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+const char* SSL_get_curve_name(uint16_t group_id) {
+  for (const auto &group : kNamedGroups) {
+    if (group.group_id == group_id) {
+      return group.name;
+    }
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc
new file mode 100644
index 0000000..86f3a54
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc	
@@ -0,0 +1,3010 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/crypto.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+#if defined(OPENSSL_WINDOWS)
+#include <sys/timeb.h>
+#else
+#include <sys/socket.h>
+#include <sys/time.h>
+#endif
+
+
+BSSL_NAMESPACE_BEGIN
+
+// |SSL_R_UNKNOWN_PROTOCOL| is no longer emitted, but continue to define it
+// to avoid downstream churn.
+OPENSSL_DECLARE_ERROR_REASON(SSL, UNKNOWN_PROTOCOL)
+
+// The following errors are no longer emitted, but are used in nginx without
+// #ifdefs.
+OPENSSL_DECLARE_ERROR_REASON(SSL, BLOCK_CIPHER_PAD_IS_WRONG)
+OPENSSL_DECLARE_ERROR_REASON(SSL, NO_CIPHERS_SPECIFIED)
+
+// Some error codes are special. Ensure the make_errors.go script never
+// regresses this.
+static_assert(SSL_R_TLSV1_ALERT_NO_RENEGOTIATION ==
+                  SSL_AD_NO_RENEGOTIATION + SSL_AD_REASON_OFFSET,
+              "alert reason code mismatch");
+
+// kMaxHandshakeSize is the maximum size, in bytes, of a handshake message.
+static const size_t kMaxHandshakeSize = (1u << 24) - 1;
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl_ctx =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+bool CBBFinishArray(CBB *cbb, Array<uint8_t> *out) {
+  uint8_t *ptr;
+  size_t len;
+  if (!CBB_finish(cbb, &ptr, &len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  out->Reset(ptr, len);
+  return true;
+}
+
+void ssl_reset_error_state(SSL *ssl) {
+  // Functions which use |SSL_get_error| must reset I/O and error state on
+  // entry.
+  ssl->s3->rwstate = SSL_ERROR_NONE;
+  ERR_clear_error();
+  ERR_clear_system_error();
+}
+
+void ssl_set_read_error(SSL* ssl) {
+  ssl->s3->read_shutdown = ssl_shutdown_error;
+  ssl->s3->read_error.reset(ERR_save_state());
+}
+
+static bool check_read_error(const SSL *ssl) {
+  if (ssl->s3->read_shutdown == ssl_shutdown_error) {
+    ERR_restore_state(ssl->s3->read_error.get());
+    return false;
+  }
+  return true;
+}
+
+bool ssl_can_write(const SSL *ssl) {
+  return !SSL_in_init(ssl) || ssl->s3->hs->can_early_write;
+}
+
+bool ssl_can_read(const SSL *ssl) {
+  return !SSL_in_init(ssl) || ssl->s3->hs->can_early_read;
+}
+
+ssl_open_record_t ssl_open_handshake(SSL *ssl, size_t *out_consumed,
+                                     uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret = ssl->method->open_handshake(ssl, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+ssl_open_record_t ssl_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                              uint8_t *out_alert,
+                                              Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret =
+      ssl->method->open_change_cipher_spec(ssl, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+ssl_open_record_t ssl_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                    size_t *out_consumed, uint8_t *out_alert,
+                                    Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret = ssl->method->open_app_data(ssl, out, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+void ssl_update_cache(SSL_HANDSHAKE *hs, int mode) {
+  SSL *const ssl = hs->ssl;
+  SSL_CTX *ctx = ssl->session_ctx.get();
+  // Never cache sessions with empty session IDs.
+  if (ssl->s3->established_session->session_id_length == 0 ||
+      ssl->s3->established_session->not_resumable ||
+      (ctx->session_cache_mode & mode) != mode) {
+    return;
+  }
+
+  // Clients never use the internal session cache.
+  int use_internal_cache = ssl->server && !(ctx->session_cache_mode &
+                                            SSL_SESS_CACHE_NO_INTERNAL_STORE);
+
+  // A client may see new sessions on abbreviated handshakes if the server
+  // decides to renew the ticket. Once the handshake is completed, it should be
+  // inserted into the cache.
+  if (ssl->s3->established_session.get() != ssl->session.get() ||
+      (!ssl->server && hs->ticket_expected)) {
+    if (use_internal_cache) {
+      SSL_CTX_add_session(ctx, ssl->s3->established_session.get());
+    }
+    if (ctx->new_session_cb != NULL) {
+      UniquePtr<SSL_SESSION> ref = UpRef(ssl->s3->established_session);
+      if (ctx->new_session_cb(ssl, ref.get())) {
+        // |new_session_cb|'s return value signals whether it took ownership.
+        ref.release();
+      }
+    }
+  }
+
+  if (use_internal_cache &&
+      !(ctx->session_cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR)) {
+    // Automatically flush the internal session cache every 255 connections.
+    int flush_cache = 0;
+    CRYPTO_MUTEX_lock_write(&ctx->lock);
+    ctx->handshakes_since_cache_flush++;
+    if (ctx->handshakes_since_cache_flush >= 255) {
+      flush_cache = 1;
+      ctx->handshakes_since_cache_flush = 0;
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->lock);
+
+    if (flush_cache) {
+      struct OPENSSL_timeval now;
+      ssl_get_current_time(ssl, &now);
+      SSL_CTX_flush_sessions(ctx, now.tv_sec);
+    }
+  }
+}
+
+static bool cbb_add_hex(CBB *cbb, Span<const uint8_t> in) {
+  static const char hextable[] = "0123456789abcdef";
+  uint8_t *out;
+
+  if (!CBB_add_space(cbb, &out, in.size() * 2)) {
+    return false;
+  }
+
+  for (uint8_t b : in) {
+    *(out++) = (uint8_t)hextable[b >> 4];
+    *(out++) = (uint8_t)hextable[b & 0xf];
+  }
+
+  return true;
+}
+
+bool ssl_log_secret(const SSL *ssl, const char *label,
+                    Span<const uint8_t> secret) {
+  if (ssl->ctx->keylog_callback == NULL) {
+    return true;
+  }
+
+  ScopedCBB cbb;
+  Array<uint8_t> line;
+  if (!CBB_init(cbb.get(), strlen(label) + 1 + SSL3_RANDOM_SIZE * 2 + 1 +
+                               secret.size() * 2 + 1) ||
+      !CBB_add_bytes(cbb.get(), reinterpret_cast<const uint8_t *>(label),
+                     strlen(label)) ||
+      !CBB_add_u8(cbb.get(), ' ') ||
+      !cbb_add_hex(cbb.get(), ssl->s3->client_random) ||
+      !CBB_add_u8(cbb.get(), ' ') ||
+      !cbb_add_hex(cbb.get(), secret) ||
+      !CBB_add_u8(cbb.get(), 0 /* NUL */) ||
+      !CBBFinishArray(cbb.get(), &line)) {
+    return false;
+  }
+
+  ssl->ctx->keylog_callback(ssl, reinterpret_cast<const char *>(line.data()));
+  return true;
+}
+
+void ssl_do_info_callback(const SSL *ssl, int type, int value) {
+  void (*cb)(const SSL *ssl, int type, int value) = NULL;
+  if (ssl->info_callback != NULL) {
+    cb = ssl->info_callback;
+  } else if (ssl->ctx->info_callback != NULL) {
+    cb = ssl->ctx->info_callback;
+  }
+
+  if (cb != NULL) {
+    cb(ssl, type, value);
+  }
+}
+
+void ssl_do_msg_callback(const SSL *ssl, int is_write, int content_type,
+                         Span<const uint8_t> in) {
+  if (ssl->msg_callback == NULL) {
+    return;
+  }
+
+  // |version| is zero when calling for |SSL3_RT_HEADER| and |SSL2_VERSION| for
+  // a V2ClientHello.
+  int version;
+  switch (content_type) {
+    case 0:
+      // V2ClientHello
+      version = SSL2_VERSION;
+      break;
+    case SSL3_RT_HEADER:
+      version = 0;
+      break;
+    default:
+      version = SSL_version(ssl);
+  }
+
+  ssl->msg_callback(is_write, version, content_type, in.data(), in.size(),
+                    const_cast<SSL *>(ssl), ssl->msg_callback_arg);
+}
+
+void ssl_get_current_time(const SSL *ssl, struct OPENSSL_timeval *out_clock) {
+  // TODO(martinkr): Change callers to |ssl_ctx_get_current_time| and drop the
+  // |ssl| arg from |current_time_cb| if possible.
+  ssl_ctx_get_current_time(ssl->ctx.get(), out_clock);
+}
+
+void ssl_ctx_get_current_time(const SSL_CTX *ctx,
+                              struct OPENSSL_timeval *out_clock) {
+  if (ctx->current_time_cb != NULL) {
+    // TODO(davidben): Update current_time_cb to use OPENSSL_timeval. See
+    // https://crbug.com/boringssl/155.
+    struct timeval clock;
+    ctx->current_time_cb(nullptr /* ssl */, &clock);
+    if (clock.tv_sec < 0) {
+      assert(0);
+      out_clock->tv_sec = 0;
+      out_clock->tv_usec = 0;
+    } else {
+      out_clock->tv_sec = (uint64_t)clock.tv_sec;
+      out_clock->tv_usec = (uint32_t)clock.tv_usec;
+    }
+    return;
+  }
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+  out_clock->tv_sec = 1234;
+  out_clock->tv_usec = 1234;
+#elif defined(OPENSSL_WINDOWS)
+  struct _timeb time;
+  _ftime(&time);
+  if (time.time < 0) {
+    assert(0);
+    out_clock->tv_sec = 0;
+    out_clock->tv_usec = 0;
+  } else {
+    out_clock->tv_sec = time.time;
+    out_clock->tv_usec = time.millitm * 1000;
+  }
+#else
+  struct timeval clock;
+  gettimeofday(&clock, NULL);
+  if (clock.tv_sec < 0) {
+    assert(0);
+    out_clock->tv_sec = 0;
+    out_clock->tv_usec = 0;
+  } else {
+    out_clock->tv_sec = (uint64_t)clock.tv_sec;
+    out_clock->tv_usec = (uint32_t)clock.tv_usec;
+  }
+#endif
+}
+
+void SSL_CTX_set_handoff_mode(SSL_CTX *ctx, bool on) {
+  ctx->handoff = on;
+}
+
+static bool ssl_can_renegotiate(const SSL *ssl) {
+  if (ssl->server || SSL_is_dtls(ssl)) {
+    return false;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // The config has already been shed.
+  if (!ssl->config) {
+    return false;
+  }
+
+  switch (ssl->renegotiate_mode) {
+    case ssl_renegotiate_ignore:
+    case ssl_renegotiate_never:
+      return false;
+
+    case ssl_renegotiate_freely:
+    case ssl_renegotiate_explicit:
+      return true;
+    case ssl_renegotiate_once:
+      return ssl->s3->total_renegotiations == 0;
+  }
+
+  assert(0);
+  return false;
+}
+
+static void ssl_maybe_shed_handshake_config(SSL *ssl) {
+  if (ssl->s3->hs != nullptr ||
+      ssl->config == nullptr ||
+      !ssl->config->shed_handshake_config ||
+      ssl_can_renegotiate(ssl)) {
+    return;
+  }
+
+  ssl->config.reset();
+}
+
+void SSL_set_handoff_mode(SSL *ssl, bool on) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->handoff = on;
+}
+
+bool SSL_get_traffic_secrets(const SSL *ssl,
+                             Span<const uint8_t> *out_read_traffic_secret,
+                             Span<const uint8_t> *out_write_traffic_secret) {
+  if (SSL_version(ssl) < TLS1_3_VERSION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    return false;
+  }
+
+  if (!ssl->s3->initial_handshake_complete) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return false;
+  }
+
+  *out_read_traffic_secret = Span<const uint8_t>(
+      ssl->s3->read_traffic_secret, ssl->s3->read_traffic_secret_len);
+  *out_write_traffic_secret = Span<const uint8_t>(
+      ssl->s3->write_traffic_secret, ssl->s3->write_traffic_secret_len);
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_library_init(void) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+static uint32_t ssl_session_hash(const SSL_SESSION *sess) {
+  return ssl_hash_session_id(
+      MakeConstSpan(sess->session_id, sess->session_id_length));
+}
+
+static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) {
+  if (a->session_id_length != b->session_id_length) {
+    return 1;
+  }
+
+  return OPENSSL_memcmp(a->session_id, b->session_id, a->session_id_length);
+}
+
+ssl_ctx_st::ssl_ctx_st(const SSL_METHOD *ssl_method)
+    : method(ssl_method->method),
+      x509_method(ssl_method->x509_method),
+      retain_only_sha256_of_client_certs(false),
+      quiet_shutdown(false),
+      ocsp_stapling_enabled(false),
+      signed_cert_timestamps_enabled(false),
+      channel_id_enabled(false),
+      grease_enabled(false),
+      allow_unknown_alpn_protos(false),
+      ed25519_enabled(false),
+      false_start_allowed_without_alpn(false),
+      ignore_tls13_downgrade(false),
+      handoff(false),
+      enable_early_data(false) {
+  CRYPTO_MUTEX_init(&lock);
+  CRYPTO_new_ex_data(&ex_data);
+}
+
+ssl_ctx_st::~ssl_ctx_st() {
+  // Free the internal session cache. Note that this calls the caller-supplied
+  // remove callback, so we must do it before clearing ex_data. (See ticket
+  // [openssl.org #212].)
+  SSL_CTX_flush_sessions(this, 0);
+
+  CRYPTO_free_ex_data(&g_ex_data_class_ssl_ctx, this, &ex_data);
+
+  CRYPTO_MUTEX_cleanup(&lock);
+  lh_SSL_SESSION_free(sessions);
+  x509_method->ssl_ctx_free(this);
+}
+
+SSL_CTX *SSL_CTX_new(const SSL_METHOD *method) {
+  if (method == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_METHOD_PASSED);
+    return nullptr;
+  }
+
+  UniquePtr<SSL_CTX> ret = MakeUnique<SSL_CTX>(method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  ret->cert = MakeUnique<CERT>(method->x509_method);
+  ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
+  ret->client_CA.reset(sk_CRYPTO_BUFFER_new_null());
+  if (ret->cert == nullptr ||
+      ret->sessions == nullptr ||
+      ret->client_CA == nullptr ||
+      !ret->x509_method->ssl_ctx_new(ret.get())) {
+    return nullptr;
+  }
+
+  if (!SSL_CTX_set_strict_cipher_list(ret.get(), SSL_DEFAULT_CIPHER_LIST) ||
+      // Lock the SSL_CTX to the specified version, for compatibility with
+      // legacy uses of SSL_METHOD.
+      !SSL_CTX_set_max_proto_version(ret.get(), method->version) ||
+      !SSL_CTX_set_min_proto_version(ret.get(), method->version)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return nullptr;
+  }
+
+  return ret.release();
+}
+
+int SSL_CTX_up_ref(SSL_CTX *ctx) {
+  CRYPTO_refcount_inc(&ctx->references);
+  return 1;
+}
+
+void SSL_CTX_free(SSL_CTX *ctx) {
+  if (ctx == NULL ||
+      !CRYPTO_refcount_dec_and_test_zero(&ctx->references)) {
+    return;
+  }
+
+  ctx->~ssl_ctx_st();
+  OPENSSL_free(ctx);
+}
+
+ssl_st::ssl_st(SSL_CTX *ctx_arg)
+    : method(ctx_arg->method),
+      max_send_fragment(ctx_arg->max_send_fragment),
+      msg_callback(ctx_arg->msg_callback),
+      msg_callback_arg(ctx_arg->msg_callback_arg),
+      ctx(UpRef(ctx_arg)),
+      session_ctx(UpRef(ctx_arg)),
+      options(ctx->options),
+      mode(ctx->mode),
+      max_cert_list(ctx->max_cert_list),
+      server(false),
+      quiet_shutdown(ctx->quiet_shutdown),
+      enable_early_data(ctx->enable_early_data) {
+  CRYPTO_new_ex_data(&ex_data);
+}
+
+ssl_st::~ssl_st() {
+  CRYPTO_free_ex_data(&g_ex_data_class_ssl, this, &ex_data);
+  // |config| refers to |this|, so we must release it earlier.
+  config.reset();
+  if (method != NULL) {
+    method->ssl_free(this);
+  }
+}
+
+SSL *SSL_new(SSL_CTX *ctx) {
+  if (ctx == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_CTX);
+    return nullptr;
+  }
+
+  UniquePtr<SSL> ssl = MakeUnique<SSL>(ctx);
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+
+  ssl->config = MakeUnique<SSL_CONFIG>(ssl.get());
+  if (ssl->config == nullptr) {
+    return nullptr;
+  }
+  ssl->config->conf_min_version = ctx->conf_min_version;
+  ssl->config->conf_max_version = ctx->conf_max_version;
+
+  ssl->config->cert = ssl_cert_dup(ctx->cert.get());
+  if (ssl->config->cert == nullptr) {
+    return nullptr;
+  }
+
+  ssl->config->verify_mode = ctx->verify_mode;
+  ssl->config->verify_callback = ctx->default_verify_callback;
+  ssl->config->custom_verify_callback = ctx->custom_verify_callback;
+  ssl->config->retain_only_sha256_of_client_certs =
+      ctx->retain_only_sha256_of_client_certs;
+
+  if (!ssl->config->supported_group_list.CopyFrom(ctx->supported_group_list) ||
+      !ssl->config->alpn_client_proto_list.CopyFrom(
+          ctx->alpn_client_proto_list) ||
+      !ssl->config->verify_sigalgs.CopyFrom(ctx->verify_sigalgs)) {
+    return nullptr;
+  }
+
+  if (ctx->psk_identity_hint) {
+    ssl->config->psk_identity_hint.reset(
+        OPENSSL_strdup(ctx->psk_identity_hint.get()));
+    if (ssl->config->psk_identity_hint == nullptr) {
+      return nullptr;
+    }
+  }
+  ssl->config->psk_client_callback = ctx->psk_client_callback;
+  ssl->config->psk_server_callback = ctx->psk_server_callback;
+
+  ssl->config->channel_id_enabled = ctx->channel_id_enabled;
+  ssl->config->channel_id_private = UpRef(ctx->channel_id_private);
+
+  ssl->config->signed_cert_timestamps_enabled =
+      ctx->signed_cert_timestamps_enabled;
+  ssl->config->ocsp_stapling_enabled = ctx->ocsp_stapling_enabled;
+  ssl->config->handoff = ctx->handoff;
+  ssl->config->ignore_tls13_downgrade = ctx->ignore_tls13_downgrade;
+  ssl->quic_method = ctx->quic_method;
+
+  if (!ssl->method->ssl_new(ssl.get()) ||
+      !ssl->ctx->x509_method->ssl_new(ssl->s3->hs.get())) {
+    return nullptr;
+  }
+
+  return ssl.release();
+}
+
+SSL_CONFIG::SSL_CONFIG(SSL *ssl_arg)
+    : ssl(ssl_arg),
+      signed_cert_timestamps_enabled(false),
+      ocsp_stapling_enabled(false),
+      channel_id_enabled(false),
+      enforce_rsa_key_usage(false),
+      retain_only_sha256_of_client_certs(false),
+      handoff(false),
+      shed_handshake_config(false),
+      ignore_tls13_downgrade(false),
+      jdk11_workaround(false) {
+  assert(ssl);
+}
+
+SSL_CONFIG::~SSL_CONFIG() {
+  if (ssl->ctx != nullptr) {
+    ssl->ctx->x509_method->ssl_config_free(this);
+  }
+}
+
+void SSL_free(SSL *ssl) {
+  Delete(ssl);
+}
+
+void SSL_set_connect_state(SSL *ssl) {
+  ssl->server = false;
+  ssl->do_handshake = ssl_client_handshake;
+}
+
+void SSL_set_accept_state(SSL *ssl) {
+  ssl->server = true;
+  ssl->do_handshake = ssl_server_handshake;
+}
+
+void SSL_set0_rbio(SSL *ssl, BIO *rbio) {
+  ssl->rbio.reset(rbio);
+}
+
+void SSL_set0_wbio(SSL *ssl, BIO *wbio) {
+  ssl->wbio.reset(wbio);
+}
+
+void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio) {
+  // For historical reasons, this function has many different cases in ownership
+  // handling.
+
+  // If nothing has changed, do nothing
+  if (rbio == SSL_get_rbio(ssl) && wbio == SSL_get_wbio(ssl)) {
+    return;
+  }
+
+  // If the two arguments are equal, one fewer reference is granted than
+  // taken.
+  if (rbio != NULL && rbio == wbio) {
+    BIO_up_ref(rbio);
+  }
+
+  // If only the wbio is changed, adopt only one reference.
+  if (rbio == SSL_get_rbio(ssl)) {
+    SSL_set0_wbio(ssl, wbio);
+    return;
+  }
+
+  // There is an asymmetry here for historical reasons. If only the rbio is
+  // changed AND the rbio and wbio were originally different, then we only adopt
+  // one reference.
+  if (wbio == SSL_get_wbio(ssl) && SSL_get_rbio(ssl) != SSL_get_wbio(ssl)) {
+    SSL_set0_rbio(ssl, rbio);
+    return;
+  }
+
+  // Otherwise, adopt both references.
+  SSL_set0_rbio(ssl, rbio);
+  SSL_set0_wbio(ssl, wbio);
+}
+
+BIO *SSL_get_rbio(const SSL *ssl) { return ssl->rbio.get(); }
+
+BIO *SSL_get_wbio(const SSL *ssl) { return ssl->wbio.get(); }
+
+size_t SSL_quic_max_handshake_flight_len(const SSL *ssl,
+                                         enum ssl_encryption_level_t level) {
+  // Limits flights to 16K by default when there are no large
+  // (certificate-carrying) messages.
+  static const size_t kDefaultLimit = 16384;
+
+  switch (level) {
+    case ssl_encryption_initial:
+      return kDefaultLimit;
+    case ssl_encryption_early_data:
+      // QUIC does not send EndOfEarlyData.
+      return 0;
+    case ssl_encryption_handshake:
+      if (ssl->server) {
+        // Servers may receive Certificate message if configured to request
+        // client certificates.
+        if (!!(ssl->config->verify_mode & SSL_VERIFY_PEER) &&
+            ssl->max_cert_list > kDefaultLimit) {
+          return ssl->max_cert_list;
+        }
+      } else {
+        // Clients may receive both Certificate message and a CertificateRequest
+        // message.
+        if (2*ssl->max_cert_list > kDefaultLimit) {
+          return 2*ssl->max_cert_list;
+        }
+      }
+      return kDefaultLimit;
+    case ssl_encryption_application:
+      // Note there is not actually a bound on the number of NewSessionTickets
+      // one may send in a row. This level may need more involved flow
+      // control. See https://github.com/quicwg/base-drafts/issues/1834.
+      return kDefaultLimit;
+  }
+
+  return 0;
+}
+
+enum ssl_encryption_level_t SSL_quic_read_level(const SSL *ssl) {
+  return ssl->s3->read_level;
+}
+
+enum ssl_encryption_level_t SSL_quic_write_level(const SSL *ssl) {
+  return ssl->s3->write_level;
+}
+
+int SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level,
+                          const uint8_t *data, size_t len) {
+  if (ssl->quic_method == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (level != ssl->s3->read_level) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED);
+    return 0;
+  }
+
+  size_t new_len = (ssl->s3->hs_buf ? ssl->s3->hs_buf->length : 0) + len;
+  if (new_len < len ||
+      new_len > SSL_quic_max_handshake_flight_len(ssl, level)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+    return 0;
+  }
+
+  return tls_append_handshake_data(ssl, MakeConstSpan(data, len));
+}
+
+int SSL_do_handshake(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
+    return -1;
+  }
+
+  if (!SSL_in_init(ssl)) {
+    return 1;
+  }
+
+  // Run the handshake.
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+
+  bool early_return = false;
+  int ret = ssl_run_handshake(hs, &early_return);
+  ssl_do_info_callback(
+      ssl, ssl->server ? SSL_CB_ACCEPT_EXIT : SSL_CB_CONNECT_EXIT, ret);
+  if (ret <= 0) {
+    return ret;
+  }
+
+  // Destroy the handshake object if the handshake has completely finished.
+  if (!early_return) {
+    ssl->s3->hs.reset();
+    ssl_maybe_shed_handshake_config(ssl);
+  }
+
+  return 1;
+}
+
+int SSL_connect(SSL *ssl) {
+  if (ssl->do_handshake == NULL) {
+    // Not properly initialized yet
+    SSL_set_connect_state(ssl);
+  }
+
+  return SSL_do_handshake(ssl);
+}
+
+int SSL_accept(SSL *ssl) {
+  if (ssl->do_handshake == NULL) {
+    // Not properly initialized yet
+    SSL_set_accept_state(ssl);
+  }
+
+  return SSL_do_handshake(ssl);
+}
+
+static int ssl_do_post_handshake(SSL *ssl, const SSLMessage &msg) {
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return tls13_post_handshake(ssl, msg);
+  }
+
+  // Check for renegotiation on the server before parsing to use the correct
+  // error. Renegotiation is triggered by a different message for servers.
+  if (ssl->server) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  if (msg.type != SSL3_MT_HELLO_REQUEST || CBS_len(&msg.body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HELLO_REQUEST);
+    return 0;
+  }
+
+  if (ssl->renegotiate_mode == ssl_renegotiate_ignore) {
+    return 1;  // Ignore the HelloRequest.
+  }
+
+  ssl->s3->renegotiate_pending = true;
+  if (ssl->renegotiate_mode == ssl_renegotiate_explicit) {
+    return 1;  // Handle it later.
+  }
+
+  if (!SSL_renegotiate(ssl)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_process_quic_post_handshake(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (SSL_in_init(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  // Replay post-handshake message errors.
+  if (!check_read_error(ssl)) {
+    return 0;
+  }
+
+  // Process any buffered post-handshake messages.
+  SSLMessage msg;
+  while (ssl->method->get_message(ssl, &msg)) {
+    // Handle the post-handshake message and try again.
+    if (!ssl_do_post_handshake(ssl, msg)) {
+      ssl_set_read_error(ssl);
+      return 0;
+    }
+    ssl->method->next_message(ssl);
+  }
+
+  return 1;
+}
+
+static int ssl_read_impl(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  // Replay post-handshake message errors.
+  if (!check_read_error(ssl)) {
+    return -1;
+  }
+
+  while (ssl->s3->pending_app_data.empty()) {
+    if (ssl->s3->renegotiate_pending) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_RENEGOTIATE;
+      return -1;
+    }
+
+    // Complete the current handshake, if any. False Start will cause
+    // |SSL_do_handshake| to return mid-handshake, so this may require multiple
+    // iterations.
+    while (!ssl_can_read(ssl)) {
+      int ret = SSL_do_handshake(ssl);
+      if (ret < 0) {
+        return ret;
+      }
+      if (ret == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
+        return -1;
+      }
+    }
+
+    // Process any buffered post-handshake messages.
+    SSLMessage msg;
+    if (ssl->method->get_message(ssl, &msg)) {
+      // If we received an interrupt in early read (EndOfEarlyData), loop again
+      // for the handshake to process it.
+      if (SSL_in_init(ssl)) {
+        ssl->s3->hs->can_early_read = false;
+        continue;
+      }
+
+      // Handle the post-handshake message and try again.
+      if (!ssl_do_post_handshake(ssl, msg)) {
+        ssl_set_read_error(ssl);
+        return -1;
+      }
+      ssl->method->next_message(ssl);
+      continue;  // Loop again. We may have begun a new handshake.
+    }
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    size_t consumed = 0;
+    auto ret = ssl_open_app_data(ssl, &ssl->s3->pending_app_data, &consumed,
+                                 &alert, ssl->s3->read_buffer.span());
+    bool retry;
+    int bio_ret = ssl_handle_open_record(ssl, &retry, ret, consumed, alert);
+    if (bio_ret <= 0) {
+      return bio_ret;
+    }
+    if (!retry) {
+      assert(!ssl->s3->pending_app_data.empty());
+      ssl->s3->key_update_count = 0;
+    }
+  }
+
+  return 1;
+}
+
+int SSL_read(SSL *ssl, void *buf, int num) {
+  int ret = SSL_peek(ssl, buf, num);
+  if (ret <= 0) {
+    return ret;
+  }
+  // TODO(davidben): In DTLS, should the rest of the record be discarded?  DTLS
+  // is not a stream. See https://crbug.com/boringssl/65.
+  ssl->s3->pending_app_data =
+      ssl->s3->pending_app_data.subspan(static_cast<size_t>(ret));
+  if (ssl->s3->pending_app_data.empty()) {
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  return ret;
+}
+
+int SSL_peek(SSL *ssl, void *buf, int num) {
+  if (ssl->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  int ret = ssl_read_impl(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  if (num <= 0) {
+    return num;
+  }
+  size_t todo =
+      std::min(ssl->s3->pending_app_data.size(), static_cast<size_t>(num));
+  OPENSSL_memcpy(buf, ssl->s3->pending_app_data.data(), todo);
+  return static_cast<int>(todo);
+}
+
+int SSL_write(SSL *ssl, const void *buf, int num) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  int ret = 0;
+  bool needs_handshake = false;
+  do {
+    // If necessary, complete the handshake implicitly.
+    if (!ssl_can_write(ssl)) {
+      ret = SSL_do_handshake(ssl);
+      if (ret < 0) {
+        return ret;
+      }
+      if (ret == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
+        return -1;
+      }
+    }
+
+    ret = ssl->method->write_app_data(ssl, &needs_handshake,
+                                      (const uint8_t *)buf, num);
+  } while (needs_handshake);
+  return ret;
+}
+
+int SSL_key_update(SSL *ssl, int request_type) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return 0;
+  }
+
+  if (ssl->ctx->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (!ssl->s3->initial_handshake_complete) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return 0;
+  }
+
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    return 0;
+  }
+
+  if (!ssl->s3->key_update_pending &&
+      !tls13_add_key_update(ssl, request_type)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_shutdown(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  // If we are in the middle of a handshake, silently succeed. Consumers often
+  // call this function before |SSL_free|, whether the handshake succeeded or
+  // not. We assume the caller has already handled failed handshakes.
+  if (SSL_in_init(ssl)) {
+    return 1;
+  }
+
+  if (ssl->quiet_shutdown) {
+    // Do nothing if configured not to send a close_notify.
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+    ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+    return 1;
+  }
+
+  // This function completes in two stages. It sends a close_notify and then it
+  // waits for a close_notify to come in. Perform exactly one action and return
+  // whether or not it succeeds.
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_close_notify) {
+    // Send a close_notify.
+    if (ssl_send_alert_impl(ssl, SSL3_AL_WARNING, SSL_AD_CLOSE_NOTIFY) <= 0) {
+      return -1;
+    }
+  } else if (ssl->s3->alert_dispatch) {
+    // Finish sending the close_notify.
+    if (ssl->method->dispatch_alert(ssl) <= 0) {
+      return -1;
+    }
+  } else if (ssl->s3->read_shutdown != ssl_shutdown_close_notify) {
+    if (SSL_is_dtls(ssl)) {
+      // Bidirectional shutdown doesn't make sense for an unordered
+      // transport. DTLS alerts also aren't delivered reliably, so we may even
+      // time out because the peer never received our close_notify. Report to
+      // the caller that the channel has fully shut down.
+      if (ssl->s3->read_shutdown == ssl_shutdown_error) {
+        ERR_restore_state(ssl->s3->read_error.get());
+        return -1;
+      }
+      ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+    } else {
+      // Process records until an error, close_notify, or application data.
+      if (ssl_read_impl(ssl) > 0) {
+        // We received some unexpected application data.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_APPLICATION_DATA_ON_SHUTDOWN);
+        return -1;
+      }
+      if (ssl->s3->read_shutdown != ssl_shutdown_close_notify) {
+        return -1;
+      }
+    }
+  }
+
+  // Return 0 for unidirectional shutdown and 1 for bidirectional shutdown.
+  return ssl->s3->read_shutdown == ssl_shutdown_close_notify;
+}
+
+int SSL_send_fatal_alert(SSL *ssl, uint8_t alert) {
+  if (ssl->s3->alert_dispatch) {
+    if (ssl->s3->send_alert[0] != SSL3_AL_FATAL ||
+        ssl->s3->send_alert[1] != alert) {
+      // We are already attempting to write a different alert.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+      return -1;
+    }
+    return ssl->method->dispatch_alert(ssl);
+  }
+
+  return ssl_send_alert_impl(ssl, SSL3_AL_FATAL, alert);
+}
+
+int SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params,
+                                  size_t params_len) {
+  return ssl->config && ssl->config->quic_transport_params.CopyFrom(
+                            MakeConstSpan(params, params_len));
+}
+
+void SSL_get_peer_quic_transport_params(const SSL *ssl,
+                                        const uint8_t **out_params,
+                                        size_t *out_params_len) {
+  *out_params = ssl->s3->peer_quic_transport_params.data();
+  *out_params_len = ssl->s3->peer_quic_transport_params.size();
+}
+
+void SSL_CTX_set_early_data_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->enable_early_data = !!enabled;
+}
+
+void SSL_set_early_data_enabled(SSL *ssl, int enabled) {
+  ssl->enable_early_data = !!enabled;
+}
+
+int SSL_in_early_data(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return 0;
+  }
+  return ssl->s3->hs->in_early_data;
+}
+
+int SSL_early_data_accepted(const SSL *ssl) {
+  return ssl->s3->early_data_accepted;
+}
+
+void SSL_reset_early_data_reject(SSL *ssl) {
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs == NULL ||
+      hs->wait != ssl_hs_early_data_rejected) {
+    abort();
+  }
+
+  hs->wait = ssl_hs_ok;
+  hs->in_early_data = false;
+  hs->early_session.reset();
+
+  // Discard any unfinished writes from the perspective of |SSL_write|'s
+  // retry. The handshake will transparently flush out the pending record
+  // (discarded by the server) to keep the framing correct.
+  ssl->s3->wpend_pending = false;
+}
+
+enum ssl_early_data_reason_t SSL_get_early_data_reason(const SSL *ssl) {
+  return ssl->s3->early_data_reason;
+}
+
+static int bio_retry_reason_to_error(int reason) {
+  switch (reason) {
+    case BIO_RR_CONNECT:
+      return SSL_ERROR_WANT_CONNECT;
+    case BIO_RR_ACCEPT:
+      return SSL_ERROR_WANT_ACCEPT;
+    default:
+      return SSL_ERROR_SYSCALL;
+  }
+}
+
+int SSL_get_error(const SSL *ssl, int ret_code) {
+  if (ret_code > 0) {
+    return SSL_ERROR_NONE;
+  }
+
+  // Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
+  // where we do encode the error
+  uint32_t err = ERR_peek_error();
+  if (err != 0) {
+    if (ERR_GET_LIB(err) == ERR_LIB_SYS) {
+      return SSL_ERROR_SYSCALL;
+    }
+    return SSL_ERROR_SSL;
+  }
+
+  if (ret_code == 0) {
+    if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+      return SSL_ERROR_ZERO_RETURN;
+    }
+    // An EOF was observed which violates the protocol, and the underlying
+    // transport does not participate in the error queue. Bubble up to the
+    // caller.
+    return SSL_ERROR_SYSCALL;
+  }
+
+  switch (ssl->s3->rwstate) {
+    case SSL_ERROR_PENDING_SESSION:
+    case SSL_ERROR_PENDING_CERTIFICATE:
+    case SSL_ERROR_HANDOFF:
+    case SSL_ERROR_HANDBACK:
+    case SSL_ERROR_WANT_X509_LOOKUP:
+    case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
+    case SSL_ERROR_WANT_PRIVATE_KEY_OPERATION:
+    case SSL_ERROR_PENDING_TICKET:
+    case SSL_ERROR_EARLY_DATA_REJECTED:
+    case SSL_ERROR_WANT_CERTIFICATE_VERIFY:
+    case SSL_ERROR_WANT_RENEGOTIATE:
+      return ssl->s3->rwstate;
+
+    case SSL_ERROR_WANT_READ: {
+      if (ssl->quic_method) {
+        return SSL_ERROR_WANT_READ;
+      }
+      BIO *bio = SSL_get_rbio(ssl);
+      if (BIO_should_read(bio)) {
+        return SSL_ERROR_WANT_READ;
+      }
+
+      if (BIO_should_write(bio)) {
+        // TODO(davidben): OpenSSL historically checked for writes on the read
+        // BIO. Can this be removed?
+        return SSL_ERROR_WANT_WRITE;
+      }
+
+      if (BIO_should_io_special(bio)) {
+        return bio_retry_reason_to_error(BIO_get_retry_reason(bio));
+      }
+
+      break;
+    }
+
+    case SSL_ERROR_WANT_WRITE: {
+      BIO *bio = SSL_get_wbio(ssl);
+      if (BIO_should_write(bio)) {
+        return SSL_ERROR_WANT_WRITE;
+      }
+
+      if (BIO_should_read(bio)) {
+        // TODO(davidben): OpenSSL historically checked for reads on the write
+        // BIO. Can this be removed?
+        return SSL_ERROR_WANT_READ;
+      }
+
+      if (BIO_should_io_special(bio)) {
+        return bio_retry_reason_to_error(BIO_get_retry_reason(bio));
+      }
+
+      break;
+    }
+  }
+
+  return SSL_ERROR_SYSCALL;
+}
+
+const char *SSL_error_description(int err) {
+  switch (err) {
+    case SSL_ERROR_NONE:
+      return "NONE";
+    case SSL_ERROR_SSL:
+      return "SSL";
+    case SSL_ERROR_WANT_READ:
+      return "WANT_READ";
+    case SSL_ERROR_WANT_WRITE:
+      return "WANT_WRITE";
+    case SSL_ERROR_WANT_X509_LOOKUP:
+      return "WANT_X509_LOOKUP";
+    case SSL_ERROR_SYSCALL:
+      return "SYSCALL";
+    case SSL_ERROR_ZERO_RETURN:
+      return "ZERO_RETURN";
+    case SSL_ERROR_WANT_CONNECT:
+      return "WANT_CONNECT";
+    case SSL_ERROR_WANT_ACCEPT:
+      return "WANT_ACCEPT";
+    case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
+      return "WANT_CHANNEL_ID_LOOKUP";
+    case SSL_ERROR_PENDING_SESSION:
+      return "PENDING_SESSION";
+    case SSL_ERROR_PENDING_CERTIFICATE:
+      return "PENDING_CERTIFICATE";
+    case SSL_ERROR_WANT_PRIVATE_KEY_OPERATION:
+      return "WANT_PRIVATE_KEY_OPERATION";
+    case SSL_ERROR_PENDING_TICKET:
+      return "PENDING_TICKET";
+    case SSL_ERROR_EARLY_DATA_REJECTED:
+      return "EARLY_DATA_REJECTED";
+    case SSL_ERROR_WANT_CERTIFICATE_VERIFY:
+      return "WANT_CERTIFICATE_VERIFY";
+    case SSL_ERROR_HANDOFF:
+      return "HANDOFF";
+    case SSL_ERROR_HANDBACK:
+      return "HANDBACK";
+    default:
+      return nullptr;
+  }
+}
+
+uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options) {
+  ctx->options |= options;
+  return ctx->options;
+}
+
+uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options) {
+  ctx->options &= ~options;
+  return ctx->options;
+}
+
+uint32_t SSL_CTX_get_options(const SSL_CTX *ctx) { return ctx->options; }
+
+uint32_t SSL_set_options(SSL *ssl, uint32_t options) {
+  ssl->options |= options;
+  return ssl->options;
+}
+
+uint32_t SSL_clear_options(SSL *ssl, uint32_t options) {
+  ssl->options &= ~options;
+  return ssl->options;
+}
+
+uint32_t SSL_get_options(const SSL *ssl) { return ssl->options; }
+
+uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode) {
+  ctx->mode |= mode;
+  return ctx->mode;
+}
+
+uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode) {
+  ctx->mode &= ~mode;
+  return ctx->mode;
+}
+
+uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx) { return ctx->mode; }
+
+uint32_t SSL_set_mode(SSL *ssl, uint32_t mode) {
+  ssl->mode |= mode;
+  return ssl->mode;
+}
+
+uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode) {
+  ssl->mode &= ~mode;
+  return ssl->mode;
+}
+
+uint32_t SSL_get_mode(const SSL *ssl) { return ssl->mode; }
+
+void SSL_CTX_set0_buffer_pool(SSL_CTX *ctx, CRYPTO_BUFFER_POOL *pool) {
+  ctx->pool = pool;
+}
+
+int SSL_get_tls_unique(const SSL *ssl, uint8_t *out, size_t *out_len,
+                       size_t max_out) {
+  *out_len = 0;
+  OPENSSL_memset(out, 0, max_out);
+
+  // tls-unique is not defined for TLS 1.3.
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  // The tls-unique value is the first Finished message in the handshake, which
+  // is the client's in a full handshake and the server's for a resumption. See
+  // https://tools.ietf.org/html/rfc5929#section-3.1.
+  const uint8_t *finished = ssl->s3->previous_client_finished;
+  size_t finished_len = ssl->s3->previous_client_finished_len;
+  if (ssl->session != NULL) {
+    // tls-unique is broken for resumed sessions unless EMS is used.
+    if (!ssl->session->extended_master_secret) {
+      return 0;
+    }
+    finished = ssl->s3->previous_server_finished;
+    finished_len = ssl->s3->previous_server_finished_len;
+  }
+
+  *out_len = finished_len;
+  if (finished_len > max_out) {
+    *out_len = max_out;
+  }
+
+  OPENSSL_memcpy(out, finished, *out_len);
+  return 1;
+}
+
+static int set_session_id_context(CERT *cert, const uint8_t *sid_ctx,
+                                   size_t sid_ctx_len) {
+  if (sid_ctx_len > sizeof(cert->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+    return 0;
+  }
+
+  static_assert(sizeof(cert->sid_ctx) < 256, "sid_ctx too large");
+  cert->sid_ctx_length = (uint8_t)sid_ctx_len;
+  OPENSSL_memcpy(cert->sid_ctx, sid_ctx, sid_ctx_len);
+  return 1;
+}
+
+int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const uint8_t *sid_ctx,
+                                   size_t sid_ctx_len) {
+  return set_session_id_context(ctx->cert.get(), sid_ctx, sid_ctx_len);
+}
+
+int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
+                               size_t sid_ctx_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_session_id_context(ssl->config->cert.get(), sid_ctx, sid_ctx_len);
+}
+
+const uint8_t *SSL_get0_session_id_context(const SSL *ssl, size_t *out_len) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    *out_len = 0;
+    return NULL;
+  }
+  *out_len = ssl->config->cert->sid_ctx_length;
+  return ssl->config->cert->sid_ctx;
+}
+
+void SSL_certs_clear(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl_cert_clear_certs(ssl->config->cert.get());
+}
+
+int SSL_get_fd(const SSL *ssl) { return SSL_get_rfd(ssl); }
+
+int SSL_get_rfd(const SSL *ssl) {
+  int ret = -1;
+  BIO *b = BIO_find_type(SSL_get_rbio(ssl), BIO_TYPE_DESCRIPTOR);
+  if (b != NULL) {
+    BIO_get_fd(b, &ret);
+  }
+  return ret;
+}
+
+int SSL_get_wfd(const SSL *ssl) {
+  int ret = -1;
+  BIO *b = BIO_find_type(SSL_get_wbio(ssl), BIO_TYPE_DESCRIPTOR);
+  if (b != NULL) {
+    BIO_get_fd(b, &ret);
+  }
+  return ret;
+}
+
+int SSL_set_fd(SSL *ssl, int fd) {
+  BIO *bio = BIO_new(BIO_s_socket());
+  if (bio == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    return 0;
+  }
+  BIO_set_fd(bio, fd, BIO_NOCLOSE);
+  SSL_set_bio(ssl, bio, bio);
+  return 1;
+}
+
+int SSL_set_wfd(SSL *ssl, int fd) {
+  BIO *rbio = SSL_get_rbio(ssl);
+  if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET ||
+      BIO_get_fd(rbio, NULL) != fd) {
+    BIO *bio = BIO_new(BIO_s_socket());
+    if (bio == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+      return 0;
+    }
+    BIO_set_fd(bio, fd, BIO_NOCLOSE);
+    SSL_set0_wbio(ssl, bio);
+  } else {
+    // Copy the rbio over to the wbio.
+    BIO_up_ref(rbio);
+    SSL_set0_wbio(ssl, rbio);
+  }
+
+  return 1;
+}
+
+int SSL_set_rfd(SSL *ssl, int fd) {
+  BIO *wbio = SSL_get_wbio(ssl);
+  if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET ||
+      BIO_get_fd(wbio, NULL) != fd) {
+    BIO *bio = BIO_new(BIO_s_socket());
+    if (bio == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+      return 0;
+    }
+    BIO_set_fd(bio, fd, BIO_NOCLOSE);
+    SSL_set0_rbio(ssl, bio);
+  } else {
+    // Copy the wbio over to the rbio.
+    BIO_up_ref(wbio);
+    SSL_set0_rbio(ssl, wbio);
+  }
+  return 1;
+}
+
+static size_t copy_finished(void *out, size_t out_len, const uint8_t *in,
+                            size_t in_len) {
+  if (out_len > in_len) {
+    out_len = in_len;
+  }
+  OPENSSL_memcpy(out, in, out_len);
+  return in_len;
+}
+
+size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count) {
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  if (ssl->server) {
+    return copy_finished(buf, count, ssl->s3->previous_server_finished,
+                         ssl->s3->previous_server_finished_len);
+  }
+
+  return copy_finished(buf, count, ssl->s3->previous_client_finished,
+                       ssl->s3->previous_client_finished_len);
+}
+
+size_t SSL_get_peer_finished(const SSL *ssl, void *buf, size_t count) {
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  if (ssl->server) {
+    return copy_finished(buf, count, ssl->s3->previous_client_finished,
+                         ssl->s3->previous_client_finished_len);
+  }
+
+  return copy_finished(buf, count, ssl->s3->previous_server_finished,
+                       ssl->s3->previous_server_finished_len);
+}
+
+int SSL_get_verify_mode(const SSL *ssl) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    return -1;
+  }
+  return ssl->config->verify_mode;
+}
+
+int SSL_get_extms_support(const SSL *ssl) {
+  // TLS 1.3 does not require extended master secret and always reports as
+  // supporting it.
+  if (!ssl->s3->have_version) {
+    return 0;
+  }
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 1;
+  }
+
+  // If the initial handshake completed, query the established session.
+  if (ssl->s3->established_session != NULL) {
+    return ssl->s3->established_session->extended_master_secret;
+  }
+
+  // Otherwise, query the in-progress handshake.
+  if (ssl->s3->hs != NULL) {
+    return ssl->s3->hs->extended_master_secret;
+  }
+  assert(0);
+  return 0;
+}
+
+int SSL_CTX_get_read_ahead(const SSL_CTX *ctx) { return 0; }
+
+int SSL_get_read_ahead(const SSL *ssl) { return 0; }
+
+int SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes) { return 1; }
+
+int SSL_set_read_ahead(SSL *ssl, int yes) { return 1; }
+
+int SSL_pending(const SSL *ssl) {
+  return static_cast<int>(ssl->s3->pending_app_data.size());
+}
+
+int SSL_CTX_check_private_key(const SSL_CTX *ctx) {
+  return ssl_cert_check_private_key(ctx->cert.get(),
+                                    ctx->cert->privatekey.get());
+}
+
+int SSL_check_private_key(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_check_private_key(ssl->config->cert.get(),
+                                    ssl->config->cert->privatekey.get());
+}
+
+long SSL_get_default_timeout(const SSL *ssl) {
+  return SSL_DEFAULT_SESSION_TIMEOUT;
+}
+
+int SSL_renegotiate(SSL *ssl) {
+  // Caller-initiated renegotiation is not supported.
+  if (!ssl->s3->renegotiate_pending) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (!ssl_can_renegotiate(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  // Renegotiation is only supported at quiescent points in the application
+  // protocol, namely in HTTPS, just before reading the HTTP response.
+  // Require the record-layer be idle and avoid complexities of sending a
+  // handshake record while an application_data record is being written.
+  if (!ssl->s3->write_buffer.empty() ||
+      ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  // Begin a new handshake.
+  if (ssl->s3->hs != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  ssl->s3->hs = ssl_handshake_new(ssl);
+  if (ssl->s3->hs == nullptr) {
+    return 0;
+  }
+
+  ssl->s3->renegotiate_pending = false;
+  ssl->s3->total_renegotiations++;
+  return 1;
+}
+
+int SSL_renegotiate_pending(SSL *ssl) {
+  return SSL_in_init(ssl) && ssl->s3->initial_handshake_complete;
+}
+
+int SSL_total_renegotiations(const SSL *ssl) {
+  return ssl->s3->total_renegotiations;
+}
+
+size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx) {
+  return ctx->max_cert_list;
+}
+
+void SSL_CTX_set_max_cert_list(SSL_CTX *ctx, size_t max_cert_list) {
+  if (max_cert_list > kMaxHandshakeSize) {
+    max_cert_list = kMaxHandshakeSize;
+  }
+  ctx->max_cert_list = (uint32_t)max_cert_list;
+}
+
+size_t SSL_get_max_cert_list(const SSL *ssl) {
+  return ssl->max_cert_list;
+}
+
+void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list) {
+  if (max_cert_list > kMaxHandshakeSize) {
+    max_cert_list = kMaxHandshakeSize;
+  }
+  ssl->max_cert_list = (uint32_t)max_cert_list;
+}
+
+int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx, size_t max_send_fragment) {
+  if (max_send_fragment < 512) {
+    max_send_fragment = 512;
+  }
+  if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
+    max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+  }
+  ctx->max_send_fragment = (uint16_t)max_send_fragment;
+
+  return 1;
+}
+
+int SSL_set_max_send_fragment(SSL *ssl, size_t max_send_fragment) {
+  if (max_send_fragment < 512) {
+    max_send_fragment = 512;
+  }
+  if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
+    max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+  }
+  ssl->max_send_fragment = (uint16_t)max_send_fragment;
+
+  return 1;
+}
+
+int SSL_set_mtu(SSL *ssl, unsigned mtu) {
+  if (!SSL_is_dtls(ssl) || mtu < dtls1_min_mtu()) {
+    return 0;
+  }
+  ssl->d1->mtu = mtu;
+  return 1;
+}
+
+int SSL_get_secure_renegotiation_support(const SSL *ssl) {
+  if (!ssl->s3->have_version) {
+    return 0;
+  }
+  return ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+         ssl->s3->send_connection_binding;
+}
+
+size_t SSL_CTX_sess_number(const SSL_CTX *ctx) {
+  MutexReadLock lock(const_cast<CRYPTO_MUTEX *>(&ctx->lock));
+  return lh_SSL_SESSION_num_items(ctx->sessions);
+}
+
+unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, unsigned long size) {
+  unsigned long ret = ctx->session_cache_size;
+  ctx->session_cache_size = size;
+  return ret;
+}
+
+unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx) {
+  return ctx->session_cache_size;
+}
+
+int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode) {
+  int ret = ctx->session_cache_mode;
+  ctx->session_cache_mode = mode;
+  return ret;
+}
+
+int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx) {
+  return ctx->session_cache_mode;
+}
+
+
+int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out, size_t len) {
+  if (out == NULL) {
+    return 48;
+  }
+  if (len != 48) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
+    return 0;
+  }
+
+  // The default ticket keys are initialized lazily. Trigger a key
+  // rotation to initialize them.
+  if (!ssl_ctx_rotate_ticket_encryption_key(ctx)) {
+    return 0;
+  }
+
+  uint8_t *out_bytes = reinterpret_cast<uint8_t *>(out);
+  MutexReadLock lock(&ctx->lock);
+  OPENSSL_memcpy(out_bytes, ctx->ticket_key_current->name, 16);
+  OPENSSL_memcpy(out_bytes + 16, ctx->ticket_key_current->hmac_key, 16);
+  OPENSSL_memcpy(out_bytes + 32, ctx->ticket_key_current->aes_key, 16);
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in, size_t len) {
+  if (in == NULL) {
+    return 48;
+  }
+  if (len != 48) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
+    return 0;
+  }
+  auto key = MakeUnique<TicketKey>();
+  if (!key) {
+    return 0;
+  }
+  const uint8_t *in_bytes = reinterpret_cast<const uint8_t *>(in);
+  OPENSSL_memcpy(key->name, in_bytes, 16);
+  OPENSSL_memcpy(key->hmac_key, in_bytes + 16, 16);
+  OPENSSL_memcpy(key->aes_key, in_bytes + 32, 16);
+  // Disable automatic key rotation for manually-configured keys. This is now
+  // the caller's responsibility.
+  key->next_rotation_tv_sec = 0;
+  ctx->ticket_key_current = std::move(key);
+  ctx->ticket_key_prev.reset();
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_ticket_key_cb(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
+                                  EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
+                                  int encrypt)) {
+  ctx->ticket_key_cb = callback;
+  return 1;
+}
+
+int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves, size_t curves_len) {
+  return tls1_set_curves(&ctx->supported_group_list,
+                         MakeConstSpan(curves, curves_len));
+}
+
+int SSL_set1_curves(SSL *ssl, const int *curves, size_t curves_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return tls1_set_curves(&ssl->config->supported_group_list,
+                         MakeConstSpan(curves, curves_len));
+}
+
+int SSL_CTX_set1_curves_list(SSL_CTX *ctx, const char *curves) {
+  return tls1_set_curves_list(&ctx->supported_group_list, curves);
+}
+
+int SSL_set1_curves_list(SSL *ssl, const char *curves) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return tls1_set_curves_list(&ssl->config->supported_group_list, curves);
+}
+
+uint16_t SSL_get_curve_id(const SSL *ssl) {
+  // TODO(davidben): This checks the wrong session if there is a renegotiation
+  // in progress.
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->group_id;
+}
+
+int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh) {
+  return 1;
+}
+
+int SSL_set_tmp_dh(SSL *ssl, const DH *dh) {
+  return 1;
+}
+
+STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx) {
+  return ctx->cipher_list->ciphers.get();
+}
+
+int SSL_CTX_cipher_in_group(const SSL_CTX *ctx, size_t i) {
+  if (i >= sk_SSL_CIPHER_num(ctx->cipher_list->ciphers.get())) {
+    return 0;
+  }
+  return ctx->cipher_list->in_group_flags[i];
+}
+
+STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  if (ssl->config == NULL) {
+    assert(ssl->config);
+    return NULL;
+  }
+
+  return ssl->config->cipher_list ? ssl->config->cipher_list->ciphers.get()
+      : ssl->ctx->cipher_list->ciphers.get();
+}
+
+const char *SSL_get_cipher_list(const SSL *ssl, int n) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+
+  STACK_OF(SSL_CIPHER) *sk = SSL_get_ciphers(ssl);
+  if (sk == NULL || n < 0 || (size_t)n >= sk_SSL_CIPHER_num(sk)) {
+    return NULL;
+  }
+
+  const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, n);
+  if (c == NULL) {
+    return NULL;
+  }
+
+  return c->name;
+}
+
+int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) {
+  return ssl_create_cipher_list(&ctx->cipher_list, str, false /* not strict */);
+}
+
+int SSL_CTX_set_strict_cipher_list(SSL_CTX *ctx, const char *str) {
+  return ssl_create_cipher_list(&ctx->cipher_list, str, true /* strict */);
+}
+
+int SSL_set_cipher_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_create_cipher_list(&ssl->config->cipher_list, str,
+                                false /* not strict */);
+}
+
+int SSL_set_strict_cipher_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_create_cipher_list(&ssl->config->cipher_list, str,
+                                true /* strict */);
+}
+
+const char *SSL_get_servername(const SSL *ssl, const int type) {
+  if (type != TLSEXT_NAMETYPE_host_name) {
+    return NULL;
+  }
+
+  // Historically, |SSL_get_servername| was also the configuration getter
+  // corresponding to |SSL_set_tlsext_host_name|.
+  if (ssl->hostname != nullptr) {
+    return ssl->hostname.get();
+  }
+
+  return ssl->s3->hostname.get();
+}
+
+int SSL_get_servername_type(const SSL *ssl) {
+  if (SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name) == NULL) {
+    return -1;
+  }
+  return TLSEXT_NAMETYPE_host_name;
+}
+
+void SSL_CTX_set_custom_verify(
+    SSL_CTX *ctx, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert)) {
+  ctx->verify_mode = mode;
+  ctx->custom_verify_callback = callback;
+}
+
+void SSL_set_custom_verify(
+    SSL *ssl, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->verify_mode = mode;
+  ssl->config->custom_verify_callback = callback;
+}
+
+void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx) {
+  ctx->signed_cert_timestamps_enabled = true;
+}
+
+void SSL_enable_signed_cert_timestamps(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->signed_cert_timestamps_enabled = true;
+}
+
+void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx) {
+  ctx->ocsp_stapling_enabled = true;
+}
+
+void SSL_enable_ocsp_stapling(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->ocsp_stapling_enabled = true;
+}
+
+void SSL_get0_signed_cert_timestamp_list(const SSL *ssl, const uint8_t **out,
+                                         size_t *out_len) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (ssl->server || !session || !session->signed_cert_timestamp_list) {
+    *out_len = 0;
+    *out = NULL;
+    return;
+  }
+
+  *out = CRYPTO_BUFFER_data(session->signed_cert_timestamp_list.get());
+  *out_len = CRYPTO_BUFFER_len(session->signed_cert_timestamp_list.get());
+}
+
+void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
+                            size_t *out_len) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (ssl->server || !session || !session->ocsp_response) {
+    *out_len = 0;
+    *out = NULL;
+    return;
+  }
+
+  *out = CRYPTO_BUFFER_data(session->ocsp_response.get());
+  *out_len = CRYPTO_BUFFER_len(session->ocsp_response.get());
+}
+
+int SSL_set_tlsext_host_name(SSL *ssl, const char *name) {
+  ssl->hostname.reset();
+  if (name == nullptr) {
+    return 1;
+  }
+
+  size_t len = strlen(name);
+  if (len == 0 || len > TLSEXT_MAXLEN_host_name) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL3_EXT_INVALID_SERVERNAME);
+    return 0;
+  }
+  ssl->hostname.reset(OPENSSL_strdup(name));
+  if (ssl->hostname == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_servername_callback(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg)) {
+  ctx->servername_callback = callback;
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg) {
+  ctx->servername_arg = arg;
+  return 1;
+}
+
+int SSL_select_next_proto(uint8_t **out, uint8_t *out_len, const uint8_t *peer,
+                          unsigned peer_len, const uint8_t *supported,
+                          unsigned supported_len) {
+  const uint8_t *result;
+  int status;
+
+  // For each protocol in peer preference order, see if we support it.
+  for (unsigned i = 0; i < peer_len;) {
+    for (unsigned j = 0; j < supported_len;) {
+      if (peer[i] == supported[j] &&
+          OPENSSL_memcmp(&peer[i + 1], &supported[j + 1], peer[i]) == 0) {
+        // We found a match
+        result = &peer[i];
+        status = OPENSSL_NPN_NEGOTIATED;
+        goto found;
+      }
+      j += supported[j];
+      j++;
+    }
+    i += peer[i];
+    i++;
+  }
+
+  // There's no overlap between our protocols and the peer's list.
+  result = supported;
+  status = OPENSSL_NPN_NO_OVERLAP;
+
+found:
+  *out = (uint8_t *)result + 1;
+  *out_len = result[0];
+  return status;
+}
+
+void SSL_get0_next_proto_negotiated(const SSL *ssl, const uint8_t **out_data,
+                                    unsigned *out_len) {
+  *out_data = ssl->s3->next_proto_negotiated.data();
+  *out_len = ssl->s3->next_proto_negotiated.size();
+}
+
+void SSL_CTX_set_next_protos_advertised_cb(
+    SSL_CTX *ctx,
+    int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
+    void *arg) {
+  ctx->next_protos_advertised_cb = cb;
+  ctx->next_protos_advertised_cb_arg = arg;
+}
+
+void SSL_CTX_set_next_proto_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg) {
+  ctx->next_proto_select_cb = cb;
+  ctx->next_proto_select_cb_arg = arg;
+}
+
+int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
+                            unsigned protos_len) {
+  // Note this function's calling convention is backwards.
+  return ctx->alpn_client_proto_list.CopyFrom(MakeConstSpan(protos, protos_len))
+             ? 0
+             : 1;
+}
+
+int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos, unsigned protos_len) {
+  // Note this function's calling convention is backwards.
+  if (!ssl->config) {
+    return 1;
+  }
+  return ssl->config->alpn_client_proto_list.CopyFrom(
+             MakeConstSpan(protos, protos_len))
+             ? 0
+             : 1;
+}
+
+void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
+                                int (*cb)(SSL *ssl, const uint8_t **out,
+                                          uint8_t *out_len, const uint8_t *in,
+                                          unsigned in_len, void *arg),
+                                void *arg) {
+  ctx->alpn_select_cb = cb;
+  ctx->alpn_select_cb_arg = arg;
+}
+
+void SSL_get0_alpn_selected(const SSL *ssl, const uint8_t **out_data,
+                            unsigned *out_len) {
+  if (SSL_in_early_data(ssl) && !ssl->server) {
+    *out_data = ssl->s3->hs->early_session->early_alpn.data();
+    *out_len = ssl->s3->hs->early_session->early_alpn.size();
+  } else {
+    *out_data = ssl->s3->alpn_selected.data();
+    *out_len = ssl->s3->alpn_selected.size();
+  }
+}
+
+void SSL_CTX_set_allow_unknown_alpn_protos(SSL_CTX *ctx, int enabled) {
+  ctx->allow_unknown_alpn_protos = !!enabled;
+}
+
+int SSL_CTX_add_cert_compression_alg(SSL_CTX *ctx, uint16_t alg_id,
+                                     ssl_cert_compression_func_t compress,
+                                     ssl_cert_decompression_func_t decompress) {
+  assert(compress != nullptr || decompress != nullptr);
+
+  for (const auto &alg : ctx->cert_compression_algs) {
+    if (alg.alg_id == alg_id) {
+      return 0;
+    }
+  }
+
+  CertCompressionAlg alg;
+  alg.alg_id = alg_id;
+  alg.compress = compress;
+  alg.decompress = decompress;
+  return ctx->cert_compression_algs.Push(alg);
+}
+
+void SSL_CTX_set_tls_channel_id_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->channel_id_enabled = !!enabled;
+}
+
+int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx) {
+  SSL_CTX_set_tls_channel_id_enabled(ctx, 1);
+  return 1;
+}
+
+void SSL_set_tls_channel_id_enabled(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->channel_id_enabled = !!enabled;
+}
+
+int SSL_enable_tls_channel_id(SSL *ssl) {
+  SSL_set_tls_channel_id_enabled(ssl, 1);
+  return 1;
+}
+
+static int is_p256_key(EVP_PKEY *private_key) {
+  const EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(private_key);
+  return ec_key != NULL &&
+         EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key)) ==
+             NID_X9_62_prime256v1;
+}
+
+int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx, EVP_PKEY *private_key) {
+  if (!is_p256_key(private_key)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
+    return 0;
+  }
+
+  ctx->channel_id_private = UpRef(private_key);
+  ctx->channel_id_enabled = true;
+
+  return 1;
+}
+
+int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key) {
+  if (!ssl->config) {
+    return 0;
+  }
+  if (!is_p256_key(private_key)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
+    return 0;
+  }
+
+  ssl->config->channel_id_private = UpRef(private_key);
+  ssl->config->channel_id_enabled = true;
+
+  return 1;
+}
+
+size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out, size_t max_out) {
+  if (!ssl->s3->channel_id_valid) {
+    return 0;
+  }
+  OPENSSL_memcpy(out, ssl->s3->channel_id, (max_out < 64) ? max_out : 64);
+  return 64;
+}
+
+int SSL_set_token_binding_params(SSL *ssl, const uint8_t *params, size_t len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  if (len > 256) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+  return ssl->config->token_binding_params.CopyFrom(MakeConstSpan(params, len));
+}
+
+int SSL_is_token_binding_negotiated(const SSL *ssl) {
+  return ssl->s3->token_binding_negotiated;
+}
+
+uint8_t SSL_get_negotiated_token_binding_param(const SSL *ssl) {
+  return ssl->s3->negotiated_token_binding_param;
+}
+
+size_t SSL_get0_certificate_types(const SSL *ssl, const uint8_t **out_types) {
+  Span<const uint8_t> types;
+  if (!ssl->server && ssl->s3->hs != nullptr) {
+    types = ssl->s3->hs->certificate_types;
+  }
+  *out_types = types.data();
+  return types.size();
+}
+
+size_t SSL_get0_peer_verify_algorithms(const SSL *ssl,
+                                       const uint16_t **out_sigalgs) {
+  Span<const uint16_t> sigalgs;
+  if (ssl->s3->hs != nullptr) {
+    sigalgs = ssl->s3->hs->peer_sigalgs;
+  }
+  *out_sigalgs = sigalgs.data();
+  return sigalgs.size();
+}
+
+EVP_PKEY *SSL_get_privatekey(const SSL *ssl) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    return NULL;
+  }
+  if (ssl->config->cert != NULL) {
+    return ssl->config->cert->privatekey.get();
+  }
+
+  return NULL;
+}
+
+EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) {
+  if (ctx->cert != NULL) {
+    return ctx->cert->privatekey.get();
+  }
+
+  return NULL;
+}
+
+const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  return session == nullptr ? nullptr : session->cipher;
+}
+
+int SSL_session_reused(const SSL *ssl) {
+  return ssl->s3->session_reused || SSL_in_early_data(ssl);
+}
+
+const COMP_METHOD *SSL_get_current_compression(SSL *ssl) { return NULL; }
+
+const COMP_METHOD *SSL_get_current_expansion(SSL *ssl) { return NULL; }
+
+int SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key) { return 0; }
+
+void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) {
+  ctx->quiet_shutdown = (mode != 0);
+}
+
+int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) {
+  return ctx->quiet_shutdown;
+}
+
+void SSL_set_quiet_shutdown(SSL *ssl, int mode) {
+  ssl->quiet_shutdown = (mode != 0);
+}
+
+int SSL_get_quiet_shutdown(const SSL *ssl) { return ssl->quiet_shutdown; }
+
+void SSL_set_shutdown(SSL *ssl, int mode) {
+  // It is an error to clear any bits that have already been set. (We can't try
+  // to get a second close_notify or send two.)
+  assert((SSL_get_shutdown(ssl) & mode) == SSL_get_shutdown(ssl));
+
+  if (mode & SSL_RECEIVED_SHUTDOWN &&
+      ssl->s3->read_shutdown == ssl_shutdown_none) {
+    ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+  }
+
+  if (mode & SSL_SENT_SHUTDOWN &&
+      ssl->s3->write_shutdown == ssl_shutdown_none) {
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+  }
+}
+
+int SSL_get_shutdown(const SSL *ssl) {
+  int ret = 0;
+  if (ssl->s3->read_shutdown != ssl_shutdown_none) {
+    // Historically, OpenSSL set |SSL_RECEIVED_SHUTDOWN| on both close_notify
+    // and fatal alert.
+    ret |= SSL_RECEIVED_SHUTDOWN;
+  }
+  if (ssl->s3->write_shutdown == ssl_shutdown_close_notify) {
+    // Historically, OpenSSL set |SSL_SENT_SHUTDOWN| on only close_notify.
+    ret |= SSL_SENT_SHUTDOWN;
+  }
+  return ret;
+}
+
+SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) { return ssl->ctx.get(); }
+
+SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) {
+  if (!ssl->config) {
+    return NULL;
+  }
+  if (ssl->ctx.get() == ctx) {
+    return ssl->ctx.get();
+  }
+
+  // One cannot change the X.509 callbacks during a connection.
+  if (ssl->ctx->x509_method != ctx->x509_method) {
+    assert(0);
+    return NULL;
+  }
+
+  UniquePtr<CERT> new_cert = ssl_cert_dup(ctx->cert.get());
+  if (!new_cert) {
+    return nullptr;
+  }
+
+  ssl->config->cert = std::move(new_cert);
+  ssl->ctx = UpRef(ctx);
+  ssl->enable_early_data = ssl->ctx->enable_early_data;
+
+  return ssl->ctx.get();
+}
+
+void SSL_set_info_callback(SSL *ssl,
+                           void (*cb)(const SSL *ssl, int type, int value)) {
+  ssl->info_callback = cb;
+}
+
+void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type,
+                                              int value) {
+  return ssl->info_callback;
+}
+
+int SSL_state(const SSL *ssl) {
+  return SSL_in_init(ssl) ? SSL_ST_INIT : SSL_ST_OK;
+}
+
+void SSL_set_state(SSL *ssl, int state) { }
+
+char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len) {
+  if (len <= 0) {
+    return NULL;
+  }
+  buf[0] = '\0';
+  return buf;
+}
+
+int SSL_get_shared_sigalgs(SSL *ssl, int idx, int *psign, int *phash,
+                           int *psignandhash, uint8_t *rsig, uint8_t *rhash) {
+  return 0;
+}
+
+int SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method) {
+  if (ctx->method->is_dtls) {
+    return 0;
+  }
+  ctx->quic_method = quic_method;
+  return 1;
+}
+
+int SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method) {
+  if (ssl->method->is_dtls) {
+    return 0;
+  }
+  ssl->quic_method = quic_method;
+  return 1;
+}
+
+int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_set_ex_data(SSL *ssl, int idx, void *data) {
+  return CRYPTO_set_ex_data(&ssl->ex_data, idx, data);
+}
+
+void *SSL_get_ex_data(const SSL *ssl, int idx) {
+  return CRYPTO_get_ex_data(&ssl->ex_data, idx);
+}
+
+int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                             CRYPTO_EX_dup *dup_unused,
+                             CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl_ctx, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *data) {
+  return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
+}
+
+void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx) {
+  return CRYPTO_get_ex_data(&ctx->ex_data, idx);
+}
+
+int SSL_want(const SSL *ssl) { return ssl->s3->rwstate; }
+
+void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
+                                  RSA *(*cb)(SSL *ssl, int is_export,
+                                             int keylength)) {}
+
+void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
+                                                   int keylength)) {}
+
+void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
+                                 DH *(*cb)(SSL *ssl, int is_export,
+                                           int keylength)) {}
+
+void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*cb)(SSL *ssl, int is_export,
+                                                 int keylength)) {}
+
+static int use_psk_identity_hint(UniquePtr<char> *out,
+                                 const char *identity_hint) {
+  if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    return 0;
+  }
+
+  // Clear currently configured hint, if any.
+  out->reset();
+
+  // Treat the empty hint as not supplying one. Plain PSK makes it possible to
+  // send either no hint (omit ServerKeyExchange) or an empty hint, while
+  // ECDHE_PSK can only spell empty hint. Having different capabilities is odd,
+  // so we interpret empty and missing as identical.
+  if (identity_hint != NULL && identity_hint[0] != '\0') {
+    out->reset(OPENSSL_strdup(identity_hint));
+    if (*out == nullptr) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) {
+  return use_psk_identity_hint(&ctx->psk_identity_hint, identity_hint);
+}
+
+int SSL_use_psk_identity_hint(SSL *ssl, const char *identity_hint) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return use_psk_identity_hint(&ssl->config->psk_identity_hint, identity_hint);
+}
+
+const char *SSL_get_psk_identity_hint(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  if (ssl->config == NULL) {
+    assert(ssl->config);
+    return NULL;
+  }
+  return ssl->config->psk_identity_hint.get();
+}
+
+const char *SSL_get_psk_identity(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+  return session->psk_identity.get();
+}
+
+void SSL_set_psk_client_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                             unsigned max_identity_len, uint8_t *psk,
+                             unsigned max_psk_len)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->psk_client_callback = cb;
+}
+
+void SSL_CTX_set_psk_client_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                                 unsigned max_identity_len, uint8_t *psk,
+                                 unsigned max_psk_len)) {
+  ctx->psk_client_callback = cb;
+}
+
+void SSL_set_psk_server_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                             unsigned max_psk_len)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->psk_server_callback = cb;
+}
+
+void SSL_CTX_set_psk_server_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity,
+                                 uint8_t *psk, unsigned max_psk_len)) {
+  ctx->psk_server_callback = cb;
+}
+
+void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
+                              void (*cb)(int write_p, int version,
+                                         int content_type, const void *buf,
+                                         size_t len, SSL *ssl, void *arg)) {
+  ctx->msg_callback = cb;
+}
+
+void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg) {
+  ctx->msg_callback_arg = arg;
+}
+
+void SSL_set_msg_callback(SSL *ssl,
+                          void (*cb)(int write_p, int version, int content_type,
+                                     const void *buf, size_t len, SSL *ssl,
+                                     void *arg)) {
+  ssl->msg_callback = cb;
+}
+
+void SSL_set_msg_callback_arg(SSL *ssl, void *arg) {
+  ssl->msg_callback_arg = arg;
+}
+
+void SSL_CTX_set_keylog_callback(SSL_CTX *ctx,
+                                 void (*cb)(const SSL *ssl, const char *line)) {
+  ctx->keylog_callback = cb;
+}
+
+void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(const SSL *ssl,
+                                                        const char *line) {
+  return ctx->keylog_callback;
+}
+
+void SSL_CTX_set_current_time_cb(SSL_CTX *ctx,
+                                 void (*cb)(const SSL *ssl,
+                                            struct timeval *out_clock)) {
+  ctx->current_time_cb = cb;
+}
+
+int SSL_is_init_finished(const SSL *ssl) {
+  return !SSL_in_init(ssl);
+}
+
+int SSL_in_init(const SSL *ssl) {
+  // This returns false once all the handshake state has been finalized, to
+  // allow callbacks and getters based on SSL_in_init to return the correct
+  // values.
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  return hs != nullptr && !hs->handshake_finalized;
+}
+
+int SSL_in_false_start(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return 0;
+  }
+  return ssl->s3->hs->in_false_start;
+}
+
+int SSL_cutthrough_complete(const SSL *ssl) {
+  return SSL_in_false_start(ssl);
+}
+
+int SSL_is_server(const SSL *ssl) { return ssl->server; }
+
+int SSL_is_dtls(const SSL *ssl) { return ssl->method->is_dtls; }
+
+void SSL_CTX_set_select_certificate_cb(
+    SSL_CTX *ctx,
+    enum ssl_select_cert_result_t (*cb)(const SSL_CLIENT_HELLO *)) {
+  ctx->select_certificate_cb = cb;
+}
+
+void SSL_CTX_set_dos_protection_cb(SSL_CTX *ctx,
+                                   int (*cb)(const SSL_CLIENT_HELLO *)) {
+  ctx->dos_protection_cb = cb;
+}
+
+void SSL_CTX_set_reverify_on_resume(SSL_CTX *ctx, int enabled) {
+  ctx->reverify_on_resume = !!enabled;
+}
+
+void SSL_set_enforce_rsa_key_usage(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->enforce_rsa_key_usage = !!enabled;
+}
+
+void SSL_set_renegotiate_mode(SSL *ssl, enum ssl_renegotiate_mode_t mode) {
+  ssl->renegotiate_mode = mode;
+
+  // Check if |ssl_can_renegotiate| has changed and the configuration may now be
+  // shed. HTTP clients may initially allow renegotiation for HTTP/1.1, and then
+  // disable after the handshake once the ALPN protocol is known to be HTTP/2.
+  ssl_maybe_shed_handshake_config(ssl);
+}
+
+int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
+                const uint8_t **out_write_iv, size_t *out_iv_len) {
+  size_t write_iv_len;
+  if (!ssl->s3->aead_read_ctx->GetIV(out_read_iv, out_iv_len) ||
+      !ssl->s3->aead_write_ctx->GetIV(out_write_iv, &write_iv_len) ||
+      *out_iv_len != write_iv_len) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static uint64_t be_to_u64(const uint8_t in[8]) {
+  return (((uint64_t)in[0]) << 56) | (((uint64_t)in[1]) << 48) |
+         (((uint64_t)in[2]) << 40) | (((uint64_t)in[3]) << 32) |
+         (((uint64_t)in[4]) << 24) | (((uint64_t)in[5]) << 16) |
+         (((uint64_t)in[6]) << 8) | ((uint64_t)in[7]);
+}
+
+uint64_t SSL_get_read_sequence(const SSL *ssl) {
+  // TODO(davidben): Internally represent sequence numbers as uint64_t.
+  if (SSL_is_dtls(ssl)) {
+    // max_seq_num already includes the epoch.
+    assert(ssl->d1->r_epoch == (ssl->d1->bitmap.max_seq_num >> 48));
+    return ssl->d1->bitmap.max_seq_num;
+  }
+  return be_to_u64(ssl->s3->read_sequence);
+}
+
+uint64_t SSL_get_write_sequence(const SSL *ssl) {
+  uint64_t ret = be_to_u64(ssl->s3->write_sequence);
+  if (SSL_is_dtls(ssl)) {
+    assert((ret >> 48) == 0);
+    ret |= ((uint64_t)ssl->d1->w_epoch) << 48;
+  }
+  return ret;
+}
+
+uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl) {
+  // TODO(davidben): This checks the wrong session if there is a renegotiation
+  // in progress.
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->peer_signature_algorithm;
+}
+
+size_t SSL_get_client_random(const SSL *ssl, uint8_t *out, size_t max_out) {
+  if (max_out == 0) {
+    return sizeof(ssl->s3->client_random);
+  }
+  if (max_out > sizeof(ssl->s3->client_random)) {
+    max_out = sizeof(ssl->s3->client_random);
+  }
+  OPENSSL_memcpy(out, ssl->s3->client_random, max_out);
+  return max_out;
+}
+
+size_t SSL_get_server_random(const SSL *ssl, uint8_t *out, size_t max_out) {
+  if (max_out == 0) {
+    return sizeof(ssl->s3->server_random);
+  }
+  if (max_out > sizeof(ssl->s3->server_random)) {
+    max_out = sizeof(ssl->s3->server_random);
+  }
+  OPENSSL_memcpy(out, ssl->s3->server_random, max_out);
+  return max_out;
+}
+
+const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl) {
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs == NULL) {
+    return NULL;
+  }
+  return hs->new_cipher;
+}
+
+void SSL_set_retain_only_sha256_of_client_certs(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->retain_only_sha256_of_client_certs = !!enabled;
+}
+
+void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx, int enabled) {
+  ctx->retain_only_sha256_of_client_certs = !!enabled;
+}
+
+void SSL_CTX_set_grease_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->grease_enabled = !!enabled;
+}
+
+int32_t SSL_get_ticket_age_skew(const SSL *ssl) {
+  return ssl->s3->ticket_age_skew;
+}
+
+void SSL_CTX_set_false_start_allowed_without_alpn(SSL_CTX *ctx, int allowed) {
+  ctx->false_start_allowed_without_alpn = !!allowed;
+}
+
+int SSL_is_tls13_downgrade(const SSL *ssl) { return ssl->s3->tls13_downgrade; }
+
+int SSL_used_hello_retry_request(const SSL *ssl) {
+  return ssl->s3->used_hello_retry_request;
+}
+
+void SSL_CTX_set_ignore_tls13_downgrade(SSL_CTX *ctx, int ignore) {
+  ctx->ignore_tls13_downgrade = !!ignore;
+}
+
+void SSL_set_ignore_tls13_downgrade(SSL *ssl, int ignore) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->ignore_tls13_downgrade = !!ignore;
+}
+
+void SSL_set_shed_handshake_config(SSL *ssl, int enable) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->shed_handshake_config = !!enable;
+}
+
+void SSL_set_jdk11_workaround(SSL *ssl, int enable) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->jdk11_workaround = !!enable;
+}
+
+int SSL_clear(SSL *ssl) {
+  if (!ssl->config) {
+    return 0;  // SSL_clear may not be used after shedding config.
+  }
+
+  // In OpenSSL, reusing a client |SSL| with |SSL_clear| causes the previously
+  // established session to be offered the next time around. wpa_supplicant
+  // depends on this behavior, so emulate it.
+  UniquePtr<SSL_SESSION> session;
+  if (!ssl->server && ssl->s3->established_session != NULL) {
+    session = UpRef(ssl->s3->established_session);
+  }
+
+  // The ssl->d1->mtu is simultaneously configuration (preserved across
+  // clear) and connection-specific state (gets reset).
+  //
+  // TODO(davidben): Avoid this.
+  unsigned mtu = 0;
+  if (ssl->d1 != NULL) {
+    mtu = ssl->d1->mtu;
+  }
+
+  ssl->method->ssl_free(ssl);
+  if (!ssl->method->ssl_new(ssl)) {
+    return 0;
+  }
+
+  if (SSL_is_dtls(ssl) && (SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    ssl->d1->mtu = mtu;
+  }
+
+  if (session != nullptr) {
+    SSL_set_session(ssl, session.get());
+  }
+
+  return 1;
+}
+
+int SSL_CTX_sess_connect(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_connect_good(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept_good(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_hits(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_misses(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_timeouts(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_cache_full(const SSL_CTX *ctx) { return 0; }
+
+int SSL_num_renegotiations(const SSL *ssl) {
+  return SSL_total_renegotiations(ssl);
+}
+
+int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx) { return 0; }
+int SSL_need_tmp_RSA(const SSL *ssl) { return 0; }
+int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa) { return 1; }
+int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa) { return 1; }
+void ERR_load_SSL_strings(void) {}
+void SSL_load_error_strings(void) {}
+int SSL_cache_hit(SSL *ssl) { return SSL_session_reused(ssl); }
+
+int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key) {
+  if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
+  return SSL_CTX_set1_curves(ctx, &nid, 1);
+}
+
+int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key) {
+  if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
+  return SSL_set1_curves(ssl, &nid, 1);
+}
+
+void SSL_CTX_set_ticket_aead_method(SSL_CTX *ctx,
+                                    const SSL_TICKET_AEAD_METHOD *aead_method) {
+  ctx->ticket_aead_method = aead_method;
+}
+
+int SSL_set_tlsext_status_type(SSL *ssl, int type) {
+  if (!ssl->config) {
+    return 0;
+  }
+  ssl->config->ocsp_stapling_enabled = type == TLSEXT_STATUSTYPE_ocsp;
+  return 1;
+}
+
+int SSL_get_tlsext_status_type(const SSL *ssl) {
+  if (ssl->server) {
+    SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+    return hs != nullptr && hs->ocsp_stapling_requested
+        ? TLSEXT_STATUSTYPE_ocsp
+        : TLSEXT_STATUSTYPE_nothing;
+  }
+
+  return ssl->config != nullptr && ssl->config->ocsp_stapling_enabled
+             ? TLSEXT_STATUSTYPE_ocsp
+             : TLSEXT_STATUSTYPE_nothing;
+}
+
+int SSL_set_tlsext_status_ocsp_resp(SSL *ssl, uint8_t *resp, size_t resp_len) {
+  if (SSL_set_ocsp_response(ssl, resp, resp_len)) {
+    OPENSSL_free(resp);
+    return 1;
+  }
+  return 0;
+}
+
+size_t SSL_get_tlsext_status_ocsp_resp(const SSL *ssl, const uint8_t **out) {
+  size_t ret;
+  SSL_get0_ocsp_response(ssl, out, &ret);
+  return ret;
+}
+
+int SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx,
+                                 int (*callback)(SSL *ssl, void *arg)) {
+  ctx->legacy_ocsp_callback = callback;
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg) {
+  ctx->legacy_ocsp_callback_arg = arg;
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc.grpc_back
new file mode 100644
index 0000000..4764000
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_lib.cc.grpc_back	
@@ -0,0 +1,3010 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+#if defined(OPENSSL_WINDOWS)
+#include <sys/timeb.h>
+#else
+#include <sys/socket.h>
+#include <sys/time.h>
+#endif
+
+
+BSSL_NAMESPACE_BEGIN
+
+// |SSL_R_UNKNOWN_PROTOCOL| is no longer emitted, but continue to define it
+// to avoid downstream churn.
+OPENSSL_DECLARE_ERROR_REASON(SSL, UNKNOWN_PROTOCOL)
+
+// The following errors are no longer emitted, but are used in nginx without
+// #ifdefs.
+OPENSSL_DECLARE_ERROR_REASON(SSL, BLOCK_CIPHER_PAD_IS_WRONG)
+OPENSSL_DECLARE_ERROR_REASON(SSL, NO_CIPHERS_SPECIFIED)
+
+// Some error codes are special. Ensure the make_errors.go script never
+// regresses this.
+static_assert(SSL_R_TLSV1_ALERT_NO_RENEGOTIATION ==
+                  SSL_AD_NO_RENEGOTIATION + SSL_AD_REASON_OFFSET,
+              "alert reason code mismatch");
+
+// kMaxHandshakeSize is the maximum size, in bytes, of a handshake message.
+static const size_t kMaxHandshakeSize = (1u << 24) - 1;
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+static CRYPTO_EX_DATA_CLASS g_ex_data_class_ssl_ctx =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+bool CBBFinishArray(CBB *cbb, Array<uint8_t> *out) {
+  uint8_t *ptr;
+  size_t len;
+  if (!CBB_finish(cbb, &ptr, &len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  out->Reset(ptr, len);
+  return true;
+}
+
+void ssl_reset_error_state(SSL *ssl) {
+  // Functions which use |SSL_get_error| must reset I/O and error state on
+  // entry.
+  ssl->s3->rwstate = SSL_ERROR_NONE;
+  ERR_clear_error();
+  ERR_clear_system_error();
+}
+
+void ssl_set_read_error(SSL* ssl) {
+  ssl->s3->read_shutdown = ssl_shutdown_error;
+  ssl->s3->read_error.reset(ERR_save_state());
+}
+
+static bool check_read_error(const SSL *ssl) {
+  if (ssl->s3->read_shutdown == ssl_shutdown_error) {
+    ERR_restore_state(ssl->s3->read_error.get());
+    return false;
+  }
+  return true;
+}
+
+bool ssl_can_write(const SSL *ssl) {
+  return !SSL_in_init(ssl) || ssl->s3->hs->can_early_write;
+}
+
+bool ssl_can_read(const SSL *ssl) {
+  return !SSL_in_init(ssl) || ssl->s3->hs->can_early_read;
+}
+
+ssl_open_record_t ssl_open_handshake(SSL *ssl, size_t *out_consumed,
+                                     uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret = ssl->method->open_handshake(ssl, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+ssl_open_record_t ssl_open_change_cipher_spec(SSL *ssl, size_t *out_consumed,
+                                              uint8_t *out_alert,
+                                              Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret =
+      ssl->method->open_change_cipher_spec(ssl, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+ssl_open_record_t ssl_open_app_data(SSL *ssl, Span<uint8_t> *out,
+                                    size_t *out_consumed, uint8_t *out_alert,
+                                    Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (!check_read_error(ssl)) {
+    *out_alert = 0;
+    return ssl_open_record_error;
+  }
+  auto ret = ssl->method->open_app_data(ssl, out, out_consumed, out_alert, in);
+  if (ret == ssl_open_record_error) {
+    ssl_set_read_error(ssl);
+  }
+  return ret;
+}
+
+void ssl_update_cache(SSL_HANDSHAKE *hs, int mode) {
+  SSL *const ssl = hs->ssl;
+  SSL_CTX *ctx = ssl->session_ctx.get();
+  // Never cache sessions with empty session IDs.
+  if (ssl->s3->established_session->session_id_length == 0 ||
+      ssl->s3->established_session->not_resumable ||
+      (ctx->session_cache_mode & mode) != mode) {
+    return;
+  }
+
+  // Clients never use the internal session cache.
+  int use_internal_cache = ssl->server && !(ctx->session_cache_mode &
+                                            SSL_SESS_CACHE_NO_INTERNAL_STORE);
+
+  // A client may see new sessions on abbreviated handshakes if the server
+  // decides to renew the ticket. Once the handshake is completed, it should be
+  // inserted into the cache.
+  if (ssl->s3->established_session.get() != ssl->session.get() ||
+      (!ssl->server && hs->ticket_expected)) {
+    if (use_internal_cache) {
+      SSL_CTX_add_session(ctx, ssl->s3->established_session.get());
+    }
+    if (ctx->new_session_cb != NULL) {
+      UniquePtr<SSL_SESSION> ref = UpRef(ssl->s3->established_session);
+      if (ctx->new_session_cb(ssl, ref.get())) {
+        // |new_session_cb|'s return value signals whether it took ownership.
+        ref.release();
+      }
+    }
+  }
+
+  if (use_internal_cache &&
+      !(ctx->session_cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR)) {
+    // Automatically flush the internal session cache every 255 connections.
+    int flush_cache = 0;
+    CRYPTO_MUTEX_lock_write(&ctx->lock);
+    ctx->handshakes_since_cache_flush++;
+    if (ctx->handshakes_since_cache_flush >= 255) {
+      flush_cache = 1;
+      ctx->handshakes_since_cache_flush = 0;
+    }
+    CRYPTO_MUTEX_unlock_write(&ctx->lock);
+
+    if (flush_cache) {
+      struct OPENSSL_timeval now;
+      ssl_get_current_time(ssl, &now);
+      SSL_CTX_flush_sessions(ctx, now.tv_sec);
+    }
+  }
+}
+
+static bool cbb_add_hex(CBB *cbb, Span<const uint8_t> in) {
+  static const char hextable[] = "0123456789abcdef";
+  uint8_t *out;
+
+  if (!CBB_add_space(cbb, &out, in.size() * 2)) {
+    return false;
+  }
+
+  for (uint8_t b : in) {
+    *(out++) = (uint8_t)hextable[b >> 4];
+    *(out++) = (uint8_t)hextable[b & 0xf];
+  }
+
+  return true;
+}
+
+bool ssl_log_secret(const SSL *ssl, const char *label,
+                    Span<const uint8_t> secret) {
+  if (ssl->ctx->keylog_callback == NULL) {
+    return true;
+  }
+
+  ScopedCBB cbb;
+  Array<uint8_t> line;
+  if (!CBB_init(cbb.get(), strlen(label) + 1 + SSL3_RANDOM_SIZE * 2 + 1 +
+                               secret.size() * 2 + 1) ||
+      !CBB_add_bytes(cbb.get(), reinterpret_cast<const uint8_t *>(label),
+                     strlen(label)) ||
+      !CBB_add_u8(cbb.get(), ' ') ||
+      !cbb_add_hex(cbb.get(), ssl->s3->client_random) ||
+      !CBB_add_u8(cbb.get(), ' ') ||
+      !cbb_add_hex(cbb.get(), secret) ||
+      !CBB_add_u8(cbb.get(), 0 /* NUL */) ||
+      !CBBFinishArray(cbb.get(), &line)) {
+    return false;
+  }
+
+  ssl->ctx->keylog_callback(ssl, reinterpret_cast<const char *>(line.data()));
+  return true;
+}
+
+void ssl_do_info_callback(const SSL *ssl, int type, int value) {
+  void (*cb)(const SSL *ssl, int type, int value) = NULL;
+  if (ssl->info_callback != NULL) {
+    cb = ssl->info_callback;
+  } else if (ssl->ctx->info_callback != NULL) {
+    cb = ssl->ctx->info_callback;
+  }
+
+  if (cb != NULL) {
+    cb(ssl, type, value);
+  }
+}
+
+void ssl_do_msg_callback(const SSL *ssl, int is_write, int content_type,
+                         Span<const uint8_t> in) {
+  if (ssl->msg_callback == NULL) {
+    return;
+  }
+
+  // |version| is zero when calling for |SSL3_RT_HEADER| and |SSL2_VERSION| for
+  // a V2ClientHello.
+  int version;
+  switch (content_type) {
+    case 0:
+      // V2ClientHello
+      version = SSL2_VERSION;
+      break;
+    case SSL3_RT_HEADER:
+      version = 0;
+      break;
+    default:
+      version = SSL_version(ssl);
+  }
+
+  ssl->msg_callback(is_write, version, content_type, in.data(), in.size(),
+                    const_cast<SSL *>(ssl), ssl->msg_callback_arg);
+}
+
+void ssl_get_current_time(const SSL *ssl, struct OPENSSL_timeval *out_clock) {
+  // TODO(martinkr): Change callers to |ssl_ctx_get_current_time| and drop the
+  // |ssl| arg from |current_time_cb| if possible.
+  ssl_ctx_get_current_time(ssl->ctx.get(), out_clock);
+}
+
+void ssl_ctx_get_current_time(const SSL_CTX *ctx,
+                              struct OPENSSL_timeval *out_clock) {
+  if (ctx->current_time_cb != NULL) {
+    // TODO(davidben): Update current_time_cb to use OPENSSL_timeval. See
+    // https://crbug.com/boringssl/155.
+    struct timeval clock;
+    ctx->current_time_cb(nullptr /* ssl */, &clock);
+    if (clock.tv_sec < 0) {
+      assert(0);
+      out_clock->tv_sec = 0;
+      out_clock->tv_usec = 0;
+    } else {
+      out_clock->tv_sec = (uint64_t)clock.tv_sec;
+      out_clock->tv_usec = (uint32_t)clock.tv_usec;
+    }
+    return;
+  }
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+  out_clock->tv_sec = 1234;
+  out_clock->tv_usec = 1234;
+#elif defined(OPENSSL_WINDOWS)
+  struct _timeb time;
+  _ftime(&time);
+  if (time.time < 0) {
+    assert(0);
+    out_clock->tv_sec = 0;
+    out_clock->tv_usec = 0;
+  } else {
+    out_clock->tv_sec = time.time;
+    out_clock->tv_usec = time.millitm * 1000;
+  }
+#else
+  struct timeval clock;
+  gettimeofday(&clock, NULL);
+  if (clock.tv_sec < 0) {
+    assert(0);
+    out_clock->tv_sec = 0;
+    out_clock->tv_usec = 0;
+  } else {
+    out_clock->tv_sec = (uint64_t)clock.tv_sec;
+    out_clock->tv_usec = (uint32_t)clock.tv_usec;
+  }
+#endif
+}
+
+void SSL_CTX_set_handoff_mode(SSL_CTX *ctx, bool on) {
+  ctx->handoff = on;
+}
+
+static bool ssl_can_renegotiate(const SSL *ssl) {
+  if (ssl->server || SSL_is_dtls(ssl)) {
+    return false;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // The config has already been shed.
+  if (!ssl->config) {
+    return false;
+  }
+
+  switch (ssl->renegotiate_mode) {
+    case ssl_renegotiate_ignore:
+    case ssl_renegotiate_never:
+      return false;
+
+    case ssl_renegotiate_freely:
+    case ssl_renegotiate_explicit:
+      return true;
+    case ssl_renegotiate_once:
+      return ssl->s3->total_renegotiations == 0;
+  }
+
+  assert(0);
+  return false;
+}
+
+static void ssl_maybe_shed_handshake_config(SSL *ssl) {
+  if (ssl->s3->hs != nullptr ||
+      ssl->config == nullptr ||
+      !ssl->config->shed_handshake_config ||
+      ssl_can_renegotiate(ssl)) {
+    return;
+  }
+
+  ssl->config.reset();
+}
+
+void SSL_set_handoff_mode(SSL *ssl, bool on) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->handoff = on;
+}
+
+bool SSL_get_traffic_secrets(const SSL *ssl,
+                             Span<const uint8_t> *out_read_traffic_secret,
+                             Span<const uint8_t> *out_write_traffic_secret) {
+  if (SSL_version(ssl) < TLS1_3_VERSION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    return false;
+  }
+
+  if (!ssl->s3->initial_handshake_complete) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return false;
+  }
+
+  *out_read_traffic_secret = Span<const uint8_t>(
+      ssl->s3->read_traffic_secret, ssl->s3->read_traffic_secret_len);
+  *out_write_traffic_secret = Span<const uint8_t>(
+      ssl->s3->write_traffic_secret, ssl->s3->write_traffic_secret_len);
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_library_init(void) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) {
+  CRYPTO_library_init();
+  return 1;
+}
+
+static uint32_t ssl_session_hash(const SSL_SESSION *sess) {
+  return ssl_hash_session_id(
+      MakeConstSpan(sess->session_id, sess->session_id_length));
+}
+
+static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) {
+  if (a->session_id_length != b->session_id_length) {
+    return 1;
+  }
+
+  return OPENSSL_memcmp(a->session_id, b->session_id, a->session_id_length);
+}
+
+ssl_ctx_st::ssl_ctx_st(const SSL_METHOD *ssl_method)
+    : method(ssl_method->method),
+      x509_method(ssl_method->x509_method),
+      retain_only_sha256_of_client_certs(false),
+      quiet_shutdown(false),
+      ocsp_stapling_enabled(false),
+      signed_cert_timestamps_enabled(false),
+      channel_id_enabled(false),
+      grease_enabled(false),
+      allow_unknown_alpn_protos(false),
+      ed25519_enabled(false),
+      false_start_allowed_without_alpn(false),
+      ignore_tls13_downgrade(false),
+      handoff(false),
+      enable_early_data(false) {
+  CRYPTO_MUTEX_init(&lock);
+  CRYPTO_new_ex_data(&ex_data);
+}
+
+ssl_ctx_st::~ssl_ctx_st() {
+  // Free the internal session cache. Note that this calls the caller-supplied
+  // remove callback, so we must do it before clearing ex_data. (See ticket
+  // [openssl.org #212].)
+  SSL_CTX_flush_sessions(this, 0);
+
+  CRYPTO_free_ex_data(&g_ex_data_class_ssl_ctx, this, &ex_data);
+
+  CRYPTO_MUTEX_cleanup(&lock);
+  lh_SSL_SESSION_free(sessions);
+  x509_method->ssl_ctx_free(this);
+}
+
+SSL_CTX *SSL_CTX_new(const SSL_METHOD *method) {
+  if (method == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_METHOD_PASSED);
+    return nullptr;
+  }
+
+  UniquePtr<SSL_CTX> ret = MakeUnique<SSL_CTX>(method);
+  if (!ret) {
+    return nullptr;
+  }
+
+  ret->cert = MakeUnique<CERT>(method->x509_method);
+  ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
+  ret->client_CA.reset(sk_CRYPTO_BUFFER_new_null());
+  if (ret->cert == nullptr ||
+      ret->sessions == nullptr ||
+      ret->client_CA == nullptr ||
+      !ret->x509_method->ssl_ctx_new(ret.get())) {
+    return nullptr;
+  }
+
+  if (!SSL_CTX_set_strict_cipher_list(ret.get(), SSL_DEFAULT_CIPHER_LIST) ||
+      // Lock the SSL_CTX to the specified version, for compatibility with
+      // legacy uses of SSL_METHOD.
+      !SSL_CTX_set_max_proto_version(ret.get(), method->version) ||
+      !SSL_CTX_set_min_proto_version(ret.get(), method->version)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return nullptr;
+  }
+
+  return ret.release();
+}
+
+int SSL_CTX_up_ref(SSL_CTX *ctx) {
+  CRYPTO_refcount_inc(&ctx->references);
+  return 1;
+}
+
+void SSL_CTX_free(SSL_CTX *ctx) {
+  if (ctx == NULL ||
+      !CRYPTO_refcount_dec_and_test_zero(&ctx->references)) {
+    return;
+  }
+
+  ctx->~ssl_ctx_st();
+  OPENSSL_free(ctx);
+}
+
+ssl_st::ssl_st(SSL_CTX *ctx_arg)
+    : method(ctx_arg->method),
+      max_send_fragment(ctx_arg->max_send_fragment),
+      msg_callback(ctx_arg->msg_callback),
+      msg_callback_arg(ctx_arg->msg_callback_arg),
+      ctx(UpRef(ctx_arg)),
+      session_ctx(UpRef(ctx_arg)),
+      options(ctx->options),
+      mode(ctx->mode),
+      max_cert_list(ctx->max_cert_list),
+      server(false),
+      quiet_shutdown(ctx->quiet_shutdown),
+      enable_early_data(ctx->enable_early_data) {
+  CRYPTO_new_ex_data(&ex_data);
+}
+
+ssl_st::~ssl_st() {
+  CRYPTO_free_ex_data(&g_ex_data_class_ssl, this, &ex_data);
+  // |config| refers to |this|, so we must release it earlier.
+  config.reset();
+  if (method != NULL) {
+    method->ssl_free(this);
+  }
+}
+
+SSL *SSL_new(SSL_CTX *ctx) {
+  if (ctx == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NULL_SSL_CTX);
+    return nullptr;
+  }
+
+  UniquePtr<SSL> ssl = MakeUnique<SSL>(ctx);
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+
+  ssl->config = MakeUnique<SSL_CONFIG>(ssl.get());
+  if (ssl->config == nullptr) {
+    return nullptr;
+  }
+  ssl->config->conf_min_version = ctx->conf_min_version;
+  ssl->config->conf_max_version = ctx->conf_max_version;
+
+  ssl->config->cert = ssl_cert_dup(ctx->cert.get());
+  if (ssl->config->cert == nullptr) {
+    return nullptr;
+  }
+
+  ssl->config->verify_mode = ctx->verify_mode;
+  ssl->config->verify_callback = ctx->default_verify_callback;
+  ssl->config->custom_verify_callback = ctx->custom_verify_callback;
+  ssl->config->retain_only_sha256_of_client_certs =
+      ctx->retain_only_sha256_of_client_certs;
+
+  if (!ssl->config->supported_group_list.CopyFrom(ctx->supported_group_list) ||
+      !ssl->config->alpn_client_proto_list.CopyFrom(
+          ctx->alpn_client_proto_list) ||
+      !ssl->config->verify_sigalgs.CopyFrom(ctx->verify_sigalgs)) {
+    return nullptr;
+  }
+
+  if (ctx->psk_identity_hint) {
+    ssl->config->psk_identity_hint.reset(
+        OPENSSL_strdup(ctx->psk_identity_hint.get()));
+    if (ssl->config->psk_identity_hint == nullptr) {
+      return nullptr;
+    }
+  }
+  ssl->config->psk_client_callback = ctx->psk_client_callback;
+  ssl->config->psk_server_callback = ctx->psk_server_callback;
+
+  ssl->config->channel_id_enabled = ctx->channel_id_enabled;
+  ssl->config->channel_id_private = UpRef(ctx->channel_id_private);
+
+  ssl->config->signed_cert_timestamps_enabled =
+      ctx->signed_cert_timestamps_enabled;
+  ssl->config->ocsp_stapling_enabled = ctx->ocsp_stapling_enabled;
+  ssl->config->handoff = ctx->handoff;
+  ssl->config->ignore_tls13_downgrade = ctx->ignore_tls13_downgrade;
+  ssl->quic_method = ctx->quic_method;
+
+  if (!ssl->method->ssl_new(ssl.get()) ||
+      !ssl->ctx->x509_method->ssl_new(ssl->s3->hs.get())) {
+    return nullptr;
+  }
+
+  return ssl.release();
+}
+
+SSL_CONFIG::SSL_CONFIG(SSL *ssl_arg)
+    : ssl(ssl_arg),
+      signed_cert_timestamps_enabled(false),
+      ocsp_stapling_enabled(false),
+      channel_id_enabled(false),
+      enforce_rsa_key_usage(false),
+      retain_only_sha256_of_client_certs(false),
+      handoff(false),
+      shed_handshake_config(false),
+      ignore_tls13_downgrade(false),
+      jdk11_workaround(false) {
+  assert(ssl);
+}
+
+SSL_CONFIG::~SSL_CONFIG() {
+  if (ssl->ctx != nullptr) {
+    ssl->ctx->x509_method->ssl_config_free(this);
+  }
+}
+
+void SSL_free(SSL *ssl) {
+  Delete(ssl);
+}
+
+void SSL_set_connect_state(SSL *ssl) {
+  ssl->server = false;
+  ssl->do_handshake = ssl_client_handshake;
+}
+
+void SSL_set_accept_state(SSL *ssl) {
+  ssl->server = true;
+  ssl->do_handshake = ssl_server_handshake;
+}
+
+void SSL_set0_rbio(SSL *ssl, BIO *rbio) {
+  ssl->rbio.reset(rbio);
+}
+
+void SSL_set0_wbio(SSL *ssl, BIO *wbio) {
+  ssl->wbio.reset(wbio);
+}
+
+void SSL_set_bio(SSL *ssl, BIO *rbio, BIO *wbio) {
+  // For historical reasons, this function has many different cases in ownership
+  // handling.
+
+  // If nothing has changed, do nothing
+  if (rbio == SSL_get_rbio(ssl) && wbio == SSL_get_wbio(ssl)) {
+    return;
+  }
+
+  // If the two arguments are equal, one fewer reference is granted than
+  // taken.
+  if (rbio != NULL && rbio == wbio) {
+    BIO_up_ref(rbio);
+  }
+
+  // If only the wbio is changed, adopt only one reference.
+  if (rbio == SSL_get_rbio(ssl)) {
+    SSL_set0_wbio(ssl, wbio);
+    return;
+  }
+
+  // There is an asymmetry here for historical reasons. If only the rbio is
+  // changed AND the rbio and wbio were originally different, then we only adopt
+  // one reference.
+  if (wbio == SSL_get_wbio(ssl) && SSL_get_rbio(ssl) != SSL_get_wbio(ssl)) {
+    SSL_set0_rbio(ssl, rbio);
+    return;
+  }
+
+  // Otherwise, adopt both references.
+  SSL_set0_rbio(ssl, rbio);
+  SSL_set0_wbio(ssl, wbio);
+}
+
+BIO *SSL_get_rbio(const SSL *ssl) { return ssl->rbio.get(); }
+
+BIO *SSL_get_wbio(const SSL *ssl) { return ssl->wbio.get(); }
+
+size_t SSL_quic_max_handshake_flight_len(const SSL *ssl,
+                                         enum ssl_encryption_level_t level) {
+  // Limits flights to 16K by default when there are no large
+  // (certificate-carrying) messages.
+  static const size_t kDefaultLimit = 16384;
+
+  switch (level) {
+    case ssl_encryption_initial:
+      return kDefaultLimit;
+    case ssl_encryption_early_data:
+      // QUIC does not send EndOfEarlyData.
+      return 0;
+    case ssl_encryption_handshake:
+      if (ssl->server) {
+        // Servers may receive Certificate message if configured to request
+        // client certificates.
+        if (!!(ssl->config->verify_mode & SSL_VERIFY_PEER) &&
+            ssl->max_cert_list > kDefaultLimit) {
+          return ssl->max_cert_list;
+        }
+      } else {
+        // Clients may receive both Certificate message and a CertificateRequest
+        // message.
+        if (2*ssl->max_cert_list > kDefaultLimit) {
+          return 2*ssl->max_cert_list;
+        }
+      }
+      return kDefaultLimit;
+    case ssl_encryption_application:
+      // Note there is not actually a bound on the number of NewSessionTickets
+      // one may send in a row. This level may need more involved flow
+      // control. See https://github.com/quicwg/base-drafts/issues/1834.
+      return kDefaultLimit;
+  }
+
+  return 0;
+}
+
+enum ssl_encryption_level_t SSL_quic_read_level(const SSL *ssl) {
+  return ssl->s3->read_level;
+}
+
+enum ssl_encryption_level_t SSL_quic_write_level(const SSL *ssl) {
+  return ssl->s3->write_level;
+}
+
+int SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level,
+                          const uint8_t *data, size_t len) {
+  if (ssl->quic_method == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (level != ssl->s3->read_level) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED);
+    return 0;
+  }
+
+  size_t new_len = (ssl->s3->hs_buf ? ssl->s3->hs_buf->length : 0) + len;
+  if (new_len < len ||
+      new_len > SSL_quic_max_handshake_flight_len(ssl, level)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EXCESSIVE_MESSAGE_SIZE);
+    return 0;
+  }
+
+  return tls_append_handshake_data(ssl, MakeConstSpan(data, len));
+}
+
+int SSL_do_handshake(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
+    return -1;
+  }
+
+  if (!SSL_in_init(ssl)) {
+    return 1;
+  }
+
+  // Run the handshake.
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+
+  bool early_return = false;
+  int ret = ssl_run_handshake(hs, &early_return);
+  ssl_do_info_callback(
+      ssl, ssl->server ? SSL_CB_ACCEPT_EXIT : SSL_CB_CONNECT_EXIT, ret);
+  if (ret <= 0) {
+    return ret;
+  }
+
+  // Destroy the handshake object if the handshake has completely finished.
+  if (!early_return) {
+    ssl->s3->hs.reset();
+    ssl_maybe_shed_handshake_config(ssl);
+  }
+
+  return 1;
+}
+
+int SSL_connect(SSL *ssl) {
+  if (ssl->do_handshake == NULL) {
+    // Not properly initialized yet
+    SSL_set_connect_state(ssl);
+  }
+
+  return SSL_do_handshake(ssl);
+}
+
+int SSL_accept(SSL *ssl) {
+  if (ssl->do_handshake == NULL) {
+    // Not properly initialized yet
+    SSL_set_accept_state(ssl);
+  }
+
+  return SSL_do_handshake(ssl);
+}
+
+static int ssl_do_post_handshake(SSL *ssl, const SSLMessage &msg) {
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return tls13_post_handshake(ssl, msg);
+  }
+
+  // Check for renegotiation on the server before parsing to use the correct
+  // error. Renegotiation is triggered by a different message for servers.
+  if (ssl->server) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  if (msg.type != SSL3_MT_HELLO_REQUEST || CBS_len(&msg.body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_HELLO_REQUEST);
+    return 0;
+  }
+
+  if (ssl->renegotiate_mode == ssl_renegotiate_ignore) {
+    return 1;  // Ignore the HelloRequest.
+  }
+
+  ssl->s3->renegotiate_pending = true;
+  if (ssl->renegotiate_mode == ssl_renegotiate_explicit) {
+    return 1;  // Handle it later.
+  }
+
+  if (!SSL_renegotiate(ssl)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_process_quic_post_handshake(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (SSL_in_init(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  // Replay post-handshake message errors.
+  if (!check_read_error(ssl)) {
+    return 0;
+  }
+
+  // Process any buffered post-handshake messages.
+  SSLMessage msg;
+  while (ssl->method->get_message(ssl, &msg)) {
+    // Handle the post-handshake message and try again.
+    if (!ssl_do_post_handshake(ssl, msg)) {
+      ssl_set_read_error(ssl);
+      return 0;
+    }
+    ssl->method->next_message(ssl);
+  }
+
+  return 1;
+}
+
+static int ssl_read_impl(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  // Replay post-handshake message errors.
+  if (!check_read_error(ssl)) {
+    return -1;
+  }
+
+  while (ssl->s3->pending_app_data.empty()) {
+    if (ssl->s3->renegotiate_pending) {
+      ssl->s3->rwstate = SSL_ERROR_WANT_RENEGOTIATE;
+      return -1;
+    }
+
+    // Complete the current handshake, if any. False Start will cause
+    // |SSL_do_handshake| to return mid-handshake, so this may require multiple
+    // iterations.
+    while (!ssl_can_read(ssl)) {
+      int ret = SSL_do_handshake(ssl);
+      if (ret < 0) {
+        return ret;
+      }
+      if (ret == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
+        return -1;
+      }
+    }
+
+    // Process any buffered post-handshake messages.
+    SSLMessage msg;
+    if (ssl->method->get_message(ssl, &msg)) {
+      // If we received an interrupt in early read (EndOfEarlyData), loop again
+      // for the handshake to process it.
+      if (SSL_in_init(ssl)) {
+        ssl->s3->hs->can_early_read = false;
+        continue;
+      }
+
+      // Handle the post-handshake message and try again.
+      if (!ssl_do_post_handshake(ssl, msg)) {
+        ssl_set_read_error(ssl);
+        return -1;
+      }
+      ssl->method->next_message(ssl);
+      continue;  // Loop again. We may have begun a new handshake.
+    }
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    size_t consumed = 0;
+    auto ret = ssl_open_app_data(ssl, &ssl->s3->pending_app_data, &consumed,
+                                 &alert, ssl->s3->read_buffer.span());
+    bool retry;
+    int bio_ret = ssl_handle_open_record(ssl, &retry, ret, consumed, alert);
+    if (bio_ret <= 0) {
+      return bio_ret;
+    }
+    if (!retry) {
+      assert(!ssl->s3->pending_app_data.empty());
+      ssl->s3->key_update_count = 0;
+    }
+  }
+
+  return 1;
+}
+
+int SSL_read(SSL *ssl, void *buf, int num) {
+  int ret = SSL_peek(ssl, buf, num);
+  if (ret <= 0) {
+    return ret;
+  }
+  // TODO(davidben): In DTLS, should the rest of the record be discarded?  DTLS
+  // is not a stream. See https://crbug.com/boringssl/65.
+  ssl->s3->pending_app_data =
+      ssl->s3->pending_app_data.subspan(static_cast<size_t>(ret));
+  if (ssl->s3->pending_app_data.empty()) {
+    ssl->s3->read_buffer.DiscardConsumed();
+  }
+  return ret;
+}
+
+int SSL_peek(SSL *ssl, void *buf, int num) {
+  if (ssl->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  int ret = ssl_read_impl(ssl);
+  if (ret <= 0) {
+    return ret;
+  }
+  if (num <= 0) {
+    return num;
+  }
+  size_t todo =
+      std::min(ssl->s3->pending_app_data.size(), static_cast<size_t>(num));
+  OPENSSL_memcpy(buf, ssl->s3->pending_app_data.data(), todo);
+  return static_cast<int>(todo);
+}
+
+int SSL_write(SSL *ssl, const void *buf, int num) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+    return -1;
+  }
+
+  int ret = 0;
+  bool needs_handshake = false;
+  do {
+    // If necessary, complete the handshake implicitly.
+    if (!ssl_can_write(ssl)) {
+      ret = SSL_do_handshake(ssl);
+      if (ret < 0) {
+        return ret;
+      }
+      if (ret == 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_HANDSHAKE_FAILURE);
+        return -1;
+      }
+    }
+
+    ret = ssl->method->write_app_data(ssl, &needs_handshake,
+                                      (const uint8_t *)buf, num);
+  } while (needs_handshake);
+  return ret;
+}
+
+int SSL_key_update(SSL *ssl, int request_type) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return 0;
+  }
+
+  if (ssl->ctx->quic_method != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (!ssl->s3->initial_handshake_complete) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return 0;
+  }
+
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SSL_VERSION);
+    return 0;
+  }
+
+  if (!ssl->s3->key_update_pending &&
+      !tls13_add_key_update(ssl, request_type)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_shutdown(SSL *ssl) {
+  ssl_reset_error_state(ssl);
+
+  if (ssl->do_handshake == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNINITIALIZED);
+    return -1;
+  }
+
+  // If we are in the middle of a handshake, silently succeed. Consumers often
+  // call this function before |SSL_free|, whether the handshake succeeded or
+  // not. We assume the caller has already handled failed handshakes.
+  if (SSL_in_init(ssl)) {
+    return 1;
+  }
+
+  if (ssl->quiet_shutdown) {
+    // Do nothing if configured not to send a close_notify.
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+    ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+    return 1;
+  }
+
+  // This function completes in two stages. It sends a close_notify and then it
+  // waits for a close_notify to come in. Perform exactly one action and return
+  // whether or not it succeeds.
+
+  if (ssl->s3->write_shutdown != ssl_shutdown_close_notify) {
+    // Send a close_notify.
+    if (ssl_send_alert_impl(ssl, SSL3_AL_WARNING, SSL_AD_CLOSE_NOTIFY) <= 0) {
+      return -1;
+    }
+  } else if (ssl->s3->alert_dispatch) {
+    // Finish sending the close_notify.
+    if (ssl->method->dispatch_alert(ssl) <= 0) {
+      return -1;
+    }
+  } else if (ssl->s3->read_shutdown != ssl_shutdown_close_notify) {
+    if (SSL_is_dtls(ssl)) {
+      // Bidirectional shutdown doesn't make sense for an unordered
+      // transport. DTLS alerts also aren't delivered reliably, so we may even
+      // time out because the peer never received our close_notify. Report to
+      // the caller that the channel has fully shut down.
+      if (ssl->s3->read_shutdown == ssl_shutdown_error) {
+        ERR_restore_state(ssl->s3->read_error.get());
+        return -1;
+      }
+      ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+    } else {
+      // Process records until an error, close_notify, or application data.
+      if (ssl_read_impl(ssl) > 0) {
+        // We received some unexpected application data.
+        OPENSSL_PUT_ERROR(SSL, SSL_R_APPLICATION_DATA_ON_SHUTDOWN);
+        return -1;
+      }
+      if (ssl->s3->read_shutdown != ssl_shutdown_close_notify) {
+        return -1;
+      }
+    }
+  }
+
+  // Return 0 for unidirectional shutdown and 1 for bidirectional shutdown.
+  return ssl->s3->read_shutdown == ssl_shutdown_close_notify;
+}
+
+int SSL_send_fatal_alert(SSL *ssl, uint8_t alert) {
+  if (ssl->s3->alert_dispatch) {
+    if (ssl->s3->send_alert[0] != SSL3_AL_FATAL ||
+        ssl->s3->send_alert[1] != alert) {
+      // We are already attempting to write a different alert.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
+      return -1;
+    }
+    return ssl->method->dispatch_alert(ssl);
+  }
+
+  return ssl_send_alert_impl(ssl, SSL3_AL_FATAL, alert);
+}
+
+int SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params,
+                                  size_t params_len) {
+  return ssl->config && ssl->config->quic_transport_params.CopyFrom(
+                            MakeConstSpan(params, params_len));
+}
+
+void SSL_get_peer_quic_transport_params(const SSL *ssl,
+                                        const uint8_t **out_params,
+                                        size_t *out_params_len) {
+  *out_params = ssl->s3->peer_quic_transport_params.data();
+  *out_params_len = ssl->s3->peer_quic_transport_params.size();
+}
+
+void SSL_CTX_set_early_data_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->enable_early_data = !!enabled;
+}
+
+void SSL_set_early_data_enabled(SSL *ssl, int enabled) {
+  ssl->enable_early_data = !!enabled;
+}
+
+int SSL_in_early_data(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return 0;
+  }
+  return ssl->s3->hs->in_early_data;
+}
+
+int SSL_early_data_accepted(const SSL *ssl) {
+  return ssl->s3->early_data_accepted;
+}
+
+void SSL_reset_early_data_reject(SSL *ssl) {
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs == NULL ||
+      hs->wait != ssl_hs_early_data_rejected) {
+    abort();
+  }
+
+  hs->wait = ssl_hs_ok;
+  hs->in_early_data = false;
+  hs->early_session.reset();
+
+  // Discard any unfinished writes from the perspective of |SSL_write|'s
+  // retry. The handshake will transparently flush out the pending record
+  // (discarded by the server) to keep the framing correct.
+  ssl->s3->wpend_pending = false;
+}
+
+enum ssl_early_data_reason_t SSL_get_early_data_reason(const SSL *ssl) {
+  return ssl->s3->early_data_reason;
+}
+
+static int bio_retry_reason_to_error(int reason) {
+  switch (reason) {
+    case BIO_RR_CONNECT:
+      return SSL_ERROR_WANT_CONNECT;
+    case BIO_RR_ACCEPT:
+      return SSL_ERROR_WANT_ACCEPT;
+    default:
+      return SSL_ERROR_SYSCALL;
+  }
+}
+
+int SSL_get_error(const SSL *ssl, int ret_code) {
+  if (ret_code > 0) {
+    return SSL_ERROR_NONE;
+  }
+
+  // Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
+  // where we do encode the error
+  uint32_t err = ERR_peek_error();
+  if (err != 0) {
+    if (ERR_GET_LIB(err) == ERR_LIB_SYS) {
+      return SSL_ERROR_SYSCALL;
+    }
+    return SSL_ERROR_SSL;
+  }
+
+  if (ret_code == 0) {
+    if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+      return SSL_ERROR_ZERO_RETURN;
+    }
+    // An EOF was observed which violates the protocol, and the underlying
+    // transport does not participate in the error queue. Bubble up to the
+    // caller.
+    return SSL_ERROR_SYSCALL;
+  }
+
+  switch (ssl->s3->rwstate) {
+    case SSL_ERROR_PENDING_SESSION:
+    case SSL_ERROR_PENDING_CERTIFICATE:
+    case SSL_ERROR_HANDOFF:
+    case SSL_ERROR_HANDBACK:
+    case SSL_ERROR_WANT_X509_LOOKUP:
+    case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
+    case SSL_ERROR_WANT_PRIVATE_KEY_OPERATION:
+    case SSL_ERROR_PENDING_TICKET:
+    case SSL_ERROR_EARLY_DATA_REJECTED:
+    case SSL_ERROR_WANT_CERTIFICATE_VERIFY:
+    case SSL_ERROR_WANT_RENEGOTIATE:
+      return ssl->s3->rwstate;
+
+    case SSL_ERROR_WANT_READ: {
+      if (ssl->quic_method) {
+        return SSL_ERROR_WANT_READ;
+      }
+      BIO *bio = SSL_get_rbio(ssl);
+      if (BIO_should_read(bio)) {
+        return SSL_ERROR_WANT_READ;
+      }
+
+      if (BIO_should_write(bio)) {
+        // TODO(davidben): OpenSSL historically checked for writes on the read
+        // BIO. Can this be removed?
+        return SSL_ERROR_WANT_WRITE;
+      }
+
+      if (BIO_should_io_special(bio)) {
+        return bio_retry_reason_to_error(BIO_get_retry_reason(bio));
+      }
+
+      break;
+    }
+
+    case SSL_ERROR_WANT_WRITE: {
+      BIO *bio = SSL_get_wbio(ssl);
+      if (BIO_should_write(bio)) {
+        return SSL_ERROR_WANT_WRITE;
+      }
+
+      if (BIO_should_read(bio)) {
+        // TODO(davidben): OpenSSL historically checked for reads on the write
+        // BIO. Can this be removed?
+        return SSL_ERROR_WANT_READ;
+      }
+
+      if (BIO_should_io_special(bio)) {
+        return bio_retry_reason_to_error(BIO_get_retry_reason(bio));
+      }
+
+      break;
+    }
+  }
+
+  return SSL_ERROR_SYSCALL;
+}
+
+const char *SSL_error_description(int err) {
+  switch (err) {
+    case SSL_ERROR_NONE:
+      return "NONE";
+    case SSL_ERROR_SSL:
+      return "SSL";
+    case SSL_ERROR_WANT_READ:
+      return "WANT_READ";
+    case SSL_ERROR_WANT_WRITE:
+      return "WANT_WRITE";
+    case SSL_ERROR_WANT_X509_LOOKUP:
+      return "WANT_X509_LOOKUP";
+    case SSL_ERROR_SYSCALL:
+      return "SYSCALL";
+    case SSL_ERROR_ZERO_RETURN:
+      return "ZERO_RETURN";
+    case SSL_ERROR_WANT_CONNECT:
+      return "WANT_CONNECT";
+    case SSL_ERROR_WANT_ACCEPT:
+      return "WANT_ACCEPT";
+    case SSL_ERROR_WANT_CHANNEL_ID_LOOKUP:
+      return "WANT_CHANNEL_ID_LOOKUP";
+    case SSL_ERROR_PENDING_SESSION:
+      return "PENDING_SESSION";
+    case SSL_ERROR_PENDING_CERTIFICATE:
+      return "PENDING_CERTIFICATE";
+    case SSL_ERROR_WANT_PRIVATE_KEY_OPERATION:
+      return "WANT_PRIVATE_KEY_OPERATION";
+    case SSL_ERROR_PENDING_TICKET:
+      return "PENDING_TICKET";
+    case SSL_ERROR_EARLY_DATA_REJECTED:
+      return "EARLY_DATA_REJECTED";
+    case SSL_ERROR_WANT_CERTIFICATE_VERIFY:
+      return "WANT_CERTIFICATE_VERIFY";
+    case SSL_ERROR_HANDOFF:
+      return "HANDOFF";
+    case SSL_ERROR_HANDBACK:
+      return "HANDBACK";
+    default:
+      return nullptr;
+  }
+}
+
+uint32_t SSL_CTX_set_options(SSL_CTX *ctx, uint32_t options) {
+  ctx->options |= options;
+  return ctx->options;
+}
+
+uint32_t SSL_CTX_clear_options(SSL_CTX *ctx, uint32_t options) {
+  ctx->options &= ~options;
+  return ctx->options;
+}
+
+uint32_t SSL_CTX_get_options(const SSL_CTX *ctx) { return ctx->options; }
+
+uint32_t SSL_set_options(SSL *ssl, uint32_t options) {
+  ssl->options |= options;
+  return ssl->options;
+}
+
+uint32_t SSL_clear_options(SSL *ssl, uint32_t options) {
+  ssl->options &= ~options;
+  return ssl->options;
+}
+
+uint32_t SSL_get_options(const SSL *ssl) { return ssl->options; }
+
+uint32_t SSL_CTX_set_mode(SSL_CTX *ctx, uint32_t mode) {
+  ctx->mode |= mode;
+  return ctx->mode;
+}
+
+uint32_t SSL_CTX_clear_mode(SSL_CTX *ctx, uint32_t mode) {
+  ctx->mode &= ~mode;
+  return ctx->mode;
+}
+
+uint32_t SSL_CTX_get_mode(const SSL_CTX *ctx) { return ctx->mode; }
+
+uint32_t SSL_set_mode(SSL *ssl, uint32_t mode) {
+  ssl->mode |= mode;
+  return ssl->mode;
+}
+
+uint32_t SSL_clear_mode(SSL *ssl, uint32_t mode) {
+  ssl->mode &= ~mode;
+  return ssl->mode;
+}
+
+uint32_t SSL_get_mode(const SSL *ssl) { return ssl->mode; }
+
+void SSL_CTX_set0_buffer_pool(SSL_CTX *ctx, CRYPTO_BUFFER_POOL *pool) {
+  ctx->pool = pool;
+}
+
+int SSL_get_tls_unique(const SSL *ssl, uint8_t *out, size_t *out_len,
+                       size_t max_out) {
+  *out_len = 0;
+  OPENSSL_memset(out, 0, max_out);
+
+  // tls-unique is not defined for TLS 1.3.
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  // The tls-unique value is the first Finished message in the handshake, which
+  // is the client's in a full handshake and the server's for a resumption. See
+  // https://tools.ietf.org/html/rfc5929#section-3.1.
+  const uint8_t *finished = ssl->s3->previous_client_finished;
+  size_t finished_len = ssl->s3->previous_client_finished_len;
+  if (ssl->session != NULL) {
+    // tls-unique is broken for resumed sessions unless EMS is used.
+    if (!ssl->session->extended_master_secret) {
+      return 0;
+    }
+    finished = ssl->s3->previous_server_finished;
+    finished_len = ssl->s3->previous_server_finished_len;
+  }
+
+  *out_len = finished_len;
+  if (finished_len > max_out) {
+    *out_len = max_out;
+  }
+
+  OPENSSL_memcpy(out, finished, *out_len);
+  return 1;
+}
+
+static int set_session_id_context(CERT *cert, const uint8_t *sid_ctx,
+                                   size_t sid_ctx_len) {
+  if (sid_ctx_len > sizeof(cert->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+    return 0;
+  }
+
+  static_assert(sizeof(cert->sid_ctx) < 256, "sid_ctx too large");
+  cert->sid_ctx_length = (uint8_t)sid_ctx_len;
+  OPENSSL_memcpy(cert->sid_ctx, sid_ctx, sid_ctx_len);
+  return 1;
+}
+
+int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const uint8_t *sid_ctx,
+                                   size_t sid_ctx_len) {
+  return set_session_id_context(ctx->cert.get(), sid_ctx, sid_ctx_len);
+}
+
+int SSL_set_session_id_context(SSL *ssl, const uint8_t *sid_ctx,
+                               size_t sid_ctx_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_session_id_context(ssl->config->cert.get(), sid_ctx, sid_ctx_len);
+}
+
+const uint8_t *SSL_get0_session_id_context(const SSL *ssl, size_t *out_len) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    *out_len = 0;
+    return NULL;
+  }
+  *out_len = ssl->config->cert->sid_ctx_length;
+  return ssl->config->cert->sid_ctx;
+}
+
+void SSL_certs_clear(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl_cert_clear_certs(ssl->config->cert.get());
+}
+
+int SSL_get_fd(const SSL *ssl) { return SSL_get_rfd(ssl); }
+
+int SSL_get_rfd(const SSL *ssl) {
+  int ret = -1;
+  BIO *b = BIO_find_type(SSL_get_rbio(ssl), BIO_TYPE_DESCRIPTOR);
+  if (b != NULL) {
+    BIO_get_fd(b, &ret);
+  }
+  return ret;
+}
+
+int SSL_get_wfd(const SSL *ssl) {
+  int ret = -1;
+  BIO *b = BIO_find_type(SSL_get_wbio(ssl), BIO_TYPE_DESCRIPTOR);
+  if (b != NULL) {
+    BIO_get_fd(b, &ret);
+  }
+  return ret;
+}
+
+int SSL_set_fd(SSL *ssl, int fd) {
+  BIO *bio = BIO_new(BIO_s_socket());
+  if (bio == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+    return 0;
+  }
+  BIO_set_fd(bio, fd, BIO_NOCLOSE);
+  SSL_set_bio(ssl, bio, bio);
+  return 1;
+}
+
+int SSL_set_wfd(SSL *ssl, int fd) {
+  BIO *rbio = SSL_get_rbio(ssl);
+  if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET ||
+      BIO_get_fd(rbio, NULL) != fd) {
+    BIO *bio = BIO_new(BIO_s_socket());
+    if (bio == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+      return 0;
+    }
+    BIO_set_fd(bio, fd, BIO_NOCLOSE);
+    SSL_set0_wbio(ssl, bio);
+  } else {
+    // Copy the rbio over to the wbio.
+    BIO_up_ref(rbio);
+    SSL_set0_wbio(ssl, rbio);
+  }
+
+  return 1;
+}
+
+int SSL_set_rfd(SSL *ssl, int fd) {
+  BIO *wbio = SSL_get_wbio(ssl);
+  if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET ||
+      BIO_get_fd(wbio, NULL) != fd) {
+    BIO *bio = BIO_new(BIO_s_socket());
+    if (bio == NULL) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_BUF_LIB);
+      return 0;
+    }
+    BIO_set_fd(bio, fd, BIO_NOCLOSE);
+    SSL_set0_rbio(ssl, bio);
+  } else {
+    // Copy the wbio over to the rbio.
+    BIO_up_ref(wbio);
+    SSL_set0_rbio(ssl, wbio);
+  }
+  return 1;
+}
+
+static size_t copy_finished(void *out, size_t out_len, const uint8_t *in,
+                            size_t in_len) {
+  if (out_len > in_len) {
+    out_len = in_len;
+  }
+  OPENSSL_memcpy(out, in, out_len);
+  return in_len;
+}
+
+size_t SSL_get_finished(const SSL *ssl, void *buf, size_t count) {
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  if (ssl->server) {
+    return copy_finished(buf, count, ssl->s3->previous_server_finished,
+                         ssl->s3->previous_server_finished_len);
+  }
+
+  return copy_finished(buf, count, ssl->s3->previous_client_finished,
+                       ssl->s3->previous_client_finished_len);
+}
+
+size_t SSL_get_peer_finished(const SSL *ssl, void *buf, size_t count) {
+  if (!ssl->s3->initial_handshake_complete ||
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 0;
+  }
+
+  if (ssl->server) {
+    return copy_finished(buf, count, ssl->s3->previous_client_finished,
+                         ssl->s3->previous_client_finished_len);
+  }
+
+  return copy_finished(buf, count, ssl->s3->previous_server_finished,
+                       ssl->s3->previous_server_finished_len);
+}
+
+int SSL_get_verify_mode(const SSL *ssl) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    return -1;
+  }
+  return ssl->config->verify_mode;
+}
+
+int SSL_get_extms_support(const SSL *ssl) {
+  // TLS 1.3 does not require extended master secret and always reports as
+  // supporting it.
+  if (!ssl->s3->have_version) {
+    return 0;
+  }
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return 1;
+  }
+
+  // If the initial handshake completed, query the established session.
+  if (ssl->s3->established_session != NULL) {
+    return ssl->s3->established_session->extended_master_secret;
+  }
+
+  // Otherwise, query the in-progress handshake.
+  if (ssl->s3->hs != NULL) {
+    return ssl->s3->hs->extended_master_secret;
+  }
+  assert(0);
+  return 0;
+}
+
+int SSL_CTX_get_read_ahead(const SSL_CTX *ctx) { return 0; }
+
+int SSL_get_read_ahead(const SSL *ssl) { return 0; }
+
+int SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes) { return 1; }
+
+int SSL_set_read_ahead(SSL *ssl, int yes) { return 1; }
+
+int SSL_pending(const SSL *ssl) {
+  return static_cast<int>(ssl->s3->pending_app_data.size());
+}
+
+int SSL_CTX_check_private_key(const SSL_CTX *ctx) {
+  return ssl_cert_check_private_key(ctx->cert.get(),
+                                    ctx->cert->privatekey.get());
+}
+
+int SSL_check_private_key(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_check_private_key(ssl->config->cert.get(),
+                                    ssl->config->cert->privatekey.get());
+}
+
+long SSL_get_default_timeout(const SSL *ssl) {
+  return SSL_DEFAULT_SESSION_TIMEOUT;
+}
+
+int SSL_renegotiate(SSL *ssl) {
+  // Caller-initiated renegotiation is not supported.
+  if (!ssl->s3->renegotiate_pending) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  if (!ssl_can_renegotiate(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  // Renegotiation is only supported at quiescent points in the application
+  // protocol, namely in HTTPS, just before reading the HTTP response.
+  // Require the record-layer be idle and avoid complexities of sending a
+  // handshake record while an application_data record is being written.
+  if (!ssl->s3->write_buffer.empty() ||
+      ssl->s3->write_shutdown != ssl_shutdown_none) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION);
+    return 0;
+  }
+
+  // Begin a new handshake.
+  if (ssl->s3->hs != nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  ssl->s3->hs = ssl_handshake_new(ssl);
+  if (ssl->s3->hs == nullptr) {
+    return 0;
+  }
+
+  ssl->s3->renegotiate_pending = false;
+  ssl->s3->total_renegotiations++;
+  return 1;
+}
+
+int SSL_renegotiate_pending(SSL *ssl) {
+  return SSL_in_init(ssl) && ssl->s3->initial_handshake_complete;
+}
+
+int SSL_total_renegotiations(const SSL *ssl) {
+  return ssl->s3->total_renegotiations;
+}
+
+size_t SSL_CTX_get_max_cert_list(const SSL_CTX *ctx) {
+  return ctx->max_cert_list;
+}
+
+void SSL_CTX_set_max_cert_list(SSL_CTX *ctx, size_t max_cert_list) {
+  if (max_cert_list > kMaxHandshakeSize) {
+    max_cert_list = kMaxHandshakeSize;
+  }
+  ctx->max_cert_list = (uint32_t)max_cert_list;
+}
+
+size_t SSL_get_max_cert_list(const SSL *ssl) {
+  return ssl->max_cert_list;
+}
+
+void SSL_set_max_cert_list(SSL *ssl, size_t max_cert_list) {
+  if (max_cert_list > kMaxHandshakeSize) {
+    max_cert_list = kMaxHandshakeSize;
+  }
+  ssl->max_cert_list = (uint32_t)max_cert_list;
+}
+
+int SSL_CTX_set_max_send_fragment(SSL_CTX *ctx, size_t max_send_fragment) {
+  if (max_send_fragment < 512) {
+    max_send_fragment = 512;
+  }
+  if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
+    max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+  }
+  ctx->max_send_fragment = (uint16_t)max_send_fragment;
+
+  return 1;
+}
+
+int SSL_set_max_send_fragment(SSL *ssl, size_t max_send_fragment) {
+  if (max_send_fragment < 512) {
+    max_send_fragment = 512;
+  }
+  if (max_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
+    max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+  }
+  ssl->max_send_fragment = (uint16_t)max_send_fragment;
+
+  return 1;
+}
+
+int SSL_set_mtu(SSL *ssl, unsigned mtu) {
+  if (!SSL_is_dtls(ssl) || mtu < dtls1_min_mtu()) {
+    return 0;
+  }
+  ssl->d1->mtu = mtu;
+  return 1;
+}
+
+int SSL_get_secure_renegotiation_support(const SSL *ssl) {
+  if (!ssl->s3->have_version) {
+    return 0;
+  }
+  return ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+         ssl->s3->send_connection_binding;
+}
+
+size_t SSL_CTX_sess_number(const SSL_CTX *ctx) {
+  MutexReadLock lock(const_cast<CRYPTO_MUTEX *>(&ctx->lock));
+  return lh_SSL_SESSION_num_items(ctx->sessions);
+}
+
+unsigned long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, unsigned long size) {
+  unsigned long ret = ctx->session_cache_size;
+  ctx->session_cache_size = size;
+  return ret;
+}
+
+unsigned long SSL_CTX_sess_get_cache_size(const SSL_CTX *ctx) {
+  return ctx->session_cache_size;
+}
+
+int SSL_CTX_set_session_cache_mode(SSL_CTX *ctx, int mode) {
+  int ret = ctx->session_cache_mode;
+  ctx->session_cache_mode = mode;
+  return ret;
+}
+
+int SSL_CTX_get_session_cache_mode(const SSL_CTX *ctx) {
+  return ctx->session_cache_mode;
+}
+
+
+int SSL_CTX_get_tlsext_ticket_keys(SSL_CTX *ctx, void *out, size_t len) {
+  if (out == NULL) {
+    return 48;
+  }
+  if (len != 48) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
+    return 0;
+  }
+
+  // The default ticket keys are initialized lazily. Trigger a key
+  // rotation to initialize them.
+  if (!ssl_ctx_rotate_ticket_encryption_key(ctx)) {
+    return 0;
+  }
+
+  uint8_t *out_bytes = reinterpret_cast<uint8_t *>(out);
+  MutexReadLock lock(&ctx->lock);
+  OPENSSL_memcpy(out_bytes, ctx->ticket_key_current->name, 16);
+  OPENSSL_memcpy(out_bytes + 16, ctx->ticket_key_current->hmac_key, 16);
+  OPENSSL_memcpy(out_bytes + 32, ctx->ticket_key_current->aes_key, 16);
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_ticket_keys(SSL_CTX *ctx, const void *in, size_t len) {
+  if (in == NULL) {
+    return 48;
+  }
+  if (len != 48) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_TICKET_KEYS_LENGTH);
+    return 0;
+  }
+  auto key = MakeUnique<TicketKey>();
+  if (!key) {
+    return 0;
+  }
+  const uint8_t *in_bytes = reinterpret_cast<const uint8_t *>(in);
+  OPENSSL_memcpy(key->name, in_bytes, 16);
+  OPENSSL_memcpy(key->hmac_key, in_bytes + 16, 16);
+  OPENSSL_memcpy(key->aes_key, in_bytes + 32, 16);
+  // Disable automatic key rotation for manually-configured keys. This is now
+  // the caller's responsibility.
+  key->next_rotation_tv_sec = 0;
+  ctx->ticket_key_current = std::move(key);
+  ctx->ticket_key_prev.reset();
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_ticket_key_cb(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, uint8_t *key_name, uint8_t *iv,
+                                  EVP_CIPHER_CTX *ctx, HMAC_CTX *hmac_ctx,
+                                  int encrypt)) {
+  ctx->ticket_key_cb = callback;
+  return 1;
+}
+
+int SSL_CTX_set1_curves(SSL_CTX *ctx, const int *curves, size_t curves_len) {
+  return tls1_set_curves(&ctx->supported_group_list,
+                         MakeConstSpan(curves, curves_len));
+}
+
+int SSL_set1_curves(SSL *ssl, const int *curves, size_t curves_len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return tls1_set_curves(&ssl->config->supported_group_list,
+                         MakeConstSpan(curves, curves_len));
+}
+
+int SSL_CTX_set1_curves_list(SSL_CTX *ctx, const char *curves) {
+  return tls1_set_curves_list(&ctx->supported_group_list, curves);
+}
+
+int SSL_set1_curves_list(SSL *ssl, const char *curves) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return tls1_set_curves_list(&ssl->config->supported_group_list, curves);
+}
+
+uint16_t SSL_get_curve_id(const SSL *ssl) {
+  // TODO(davidben): This checks the wrong session if there is a renegotiation
+  // in progress.
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->group_id;
+}
+
+int SSL_CTX_set_tmp_dh(SSL_CTX *ctx, const DH *dh) {
+  return 1;
+}
+
+int SSL_set_tmp_dh(SSL *ssl, const DH *dh) {
+  return 1;
+}
+
+STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx) {
+  return ctx->cipher_list->ciphers.get();
+}
+
+int SSL_CTX_cipher_in_group(const SSL_CTX *ctx, size_t i) {
+  if (i >= sk_SSL_CIPHER_num(ctx->cipher_list->ciphers.get())) {
+    return 0;
+  }
+  return ctx->cipher_list->in_group_flags[i];
+}
+
+STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  if (ssl->config == NULL) {
+    assert(ssl->config);
+    return NULL;
+  }
+
+  return ssl->config->cipher_list ? ssl->config->cipher_list->ciphers.get()
+      : ssl->ctx->cipher_list->ciphers.get();
+}
+
+const char *SSL_get_cipher_list(const SSL *ssl, int n) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+
+  STACK_OF(SSL_CIPHER) *sk = SSL_get_ciphers(ssl);
+  if (sk == NULL || n < 0 || (size_t)n >= sk_SSL_CIPHER_num(sk)) {
+    return NULL;
+  }
+
+  const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, n);
+  if (c == NULL) {
+    return NULL;
+  }
+
+  return c->name;
+}
+
+int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) {
+  return ssl_create_cipher_list(&ctx->cipher_list, str, false /* not strict */);
+}
+
+int SSL_CTX_set_strict_cipher_list(SSL_CTX *ctx, const char *str) {
+  return ssl_create_cipher_list(&ctx->cipher_list, str, true /* strict */);
+}
+
+int SSL_set_cipher_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_create_cipher_list(&ssl->config->cipher_list, str,
+                                false /* not strict */);
+}
+
+int SSL_set_strict_cipher_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_create_cipher_list(&ssl->config->cipher_list, str,
+                                true /* strict */);
+}
+
+const char *SSL_get_servername(const SSL *ssl, const int type) {
+  if (type != TLSEXT_NAMETYPE_host_name) {
+    return NULL;
+  }
+
+  // Historically, |SSL_get_servername| was also the configuration getter
+  // corresponding to |SSL_set_tlsext_host_name|.
+  if (ssl->hostname != nullptr) {
+    return ssl->hostname.get();
+  }
+
+  return ssl->s3->hostname.get();
+}
+
+int SSL_get_servername_type(const SSL *ssl) {
+  if (SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name) == NULL) {
+    return -1;
+  }
+  return TLSEXT_NAMETYPE_host_name;
+}
+
+void SSL_CTX_set_custom_verify(
+    SSL_CTX *ctx, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert)) {
+  ctx->verify_mode = mode;
+  ctx->custom_verify_callback = callback;
+}
+
+void SSL_set_custom_verify(
+    SSL *ssl, int mode,
+    enum ssl_verify_result_t (*callback)(SSL *ssl, uint8_t *out_alert)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->verify_mode = mode;
+  ssl->config->custom_verify_callback = callback;
+}
+
+void SSL_CTX_enable_signed_cert_timestamps(SSL_CTX *ctx) {
+  ctx->signed_cert_timestamps_enabled = true;
+}
+
+void SSL_enable_signed_cert_timestamps(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->signed_cert_timestamps_enabled = true;
+}
+
+void SSL_CTX_enable_ocsp_stapling(SSL_CTX *ctx) {
+  ctx->ocsp_stapling_enabled = true;
+}
+
+void SSL_enable_ocsp_stapling(SSL *ssl) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->ocsp_stapling_enabled = true;
+}
+
+void SSL_get0_signed_cert_timestamp_list(const SSL *ssl, const uint8_t **out,
+                                         size_t *out_len) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (ssl->server || !session || !session->signed_cert_timestamp_list) {
+    *out_len = 0;
+    *out = NULL;
+    return;
+  }
+
+  *out = CRYPTO_BUFFER_data(session->signed_cert_timestamp_list.get());
+  *out_len = CRYPTO_BUFFER_len(session->signed_cert_timestamp_list.get());
+}
+
+void SSL_get0_ocsp_response(const SSL *ssl, const uint8_t **out,
+                            size_t *out_len) {
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (ssl->server || !session || !session->ocsp_response) {
+    *out_len = 0;
+    *out = NULL;
+    return;
+  }
+
+  *out = CRYPTO_BUFFER_data(session->ocsp_response.get());
+  *out_len = CRYPTO_BUFFER_len(session->ocsp_response.get());
+}
+
+int SSL_set_tlsext_host_name(SSL *ssl, const char *name) {
+  ssl->hostname.reset();
+  if (name == nullptr) {
+    return 1;
+  }
+
+  size_t len = strlen(name);
+  if (len == 0 || len > TLSEXT_MAXLEN_host_name) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL3_EXT_INVALID_SERVERNAME);
+    return 0;
+  }
+  ssl->hostname.reset(OPENSSL_strdup(name));
+  if (ssl->hostname == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_servername_callback(
+    SSL_CTX *ctx, int (*callback)(SSL *ssl, int *out_alert, void *arg)) {
+  ctx->servername_callback = callback;
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_servername_arg(SSL_CTX *ctx, void *arg) {
+  ctx->servername_arg = arg;
+  return 1;
+}
+
+int SSL_select_next_proto(uint8_t **out, uint8_t *out_len, const uint8_t *peer,
+                          unsigned peer_len, const uint8_t *supported,
+                          unsigned supported_len) {
+  const uint8_t *result;
+  int status;
+
+  // For each protocol in peer preference order, see if we support it.
+  for (unsigned i = 0; i < peer_len;) {
+    for (unsigned j = 0; j < supported_len;) {
+      if (peer[i] == supported[j] &&
+          OPENSSL_memcmp(&peer[i + 1], &supported[j + 1], peer[i]) == 0) {
+        // We found a match
+        result = &peer[i];
+        status = OPENSSL_NPN_NEGOTIATED;
+        goto found;
+      }
+      j += supported[j];
+      j++;
+    }
+    i += peer[i];
+    i++;
+  }
+
+  // There's no overlap between our protocols and the peer's list.
+  result = supported;
+  status = OPENSSL_NPN_NO_OVERLAP;
+
+found:
+  *out = (uint8_t *)result + 1;
+  *out_len = result[0];
+  return status;
+}
+
+void SSL_get0_next_proto_negotiated(const SSL *ssl, const uint8_t **out_data,
+                                    unsigned *out_len) {
+  *out_data = ssl->s3->next_proto_negotiated.data();
+  *out_len = ssl->s3->next_proto_negotiated.size();
+}
+
+void SSL_CTX_set_next_protos_advertised_cb(
+    SSL_CTX *ctx,
+    int (*cb)(SSL *ssl, const uint8_t **out, unsigned *out_len, void *arg),
+    void *arg) {
+  ctx->next_protos_advertised_cb = cb;
+  ctx->next_protos_advertised_cb_arg = arg;
+}
+
+void SSL_CTX_set_next_proto_select_cb(
+    SSL_CTX *ctx, int (*cb)(SSL *ssl, uint8_t **out, uint8_t *out_len,
+                            const uint8_t *in, unsigned in_len, void *arg),
+    void *arg) {
+  ctx->next_proto_select_cb = cb;
+  ctx->next_proto_select_cb_arg = arg;
+}
+
+int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const uint8_t *protos,
+                            unsigned protos_len) {
+  // Note this function's calling convention is backwards.
+  return ctx->alpn_client_proto_list.CopyFrom(MakeConstSpan(protos, protos_len))
+             ? 0
+             : 1;
+}
+
+int SSL_set_alpn_protos(SSL *ssl, const uint8_t *protos, unsigned protos_len) {
+  // Note this function's calling convention is backwards.
+  if (!ssl->config) {
+    return 1;
+  }
+  return ssl->config->alpn_client_proto_list.CopyFrom(
+             MakeConstSpan(protos, protos_len))
+             ? 0
+             : 1;
+}
+
+void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
+                                int (*cb)(SSL *ssl, const uint8_t **out,
+                                          uint8_t *out_len, const uint8_t *in,
+                                          unsigned in_len, void *arg),
+                                void *arg) {
+  ctx->alpn_select_cb = cb;
+  ctx->alpn_select_cb_arg = arg;
+}
+
+void SSL_get0_alpn_selected(const SSL *ssl, const uint8_t **out_data,
+                            unsigned *out_len) {
+  if (SSL_in_early_data(ssl) && !ssl->server) {
+    *out_data = ssl->s3->hs->early_session->early_alpn.data();
+    *out_len = ssl->s3->hs->early_session->early_alpn.size();
+  } else {
+    *out_data = ssl->s3->alpn_selected.data();
+    *out_len = ssl->s3->alpn_selected.size();
+  }
+}
+
+void SSL_CTX_set_allow_unknown_alpn_protos(SSL_CTX *ctx, int enabled) {
+  ctx->allow_unknown_alpn_protos = !!enabled;
+}
+
+int SSL_CTX_add_cert_compression_alg(SSL_CTX *ctx, uint16_t alg_id,
+                                     ssl_cert_compression_func_t compress,
+                                     ssl_cert_decompression_func_t decompress) {
+  assert(compress != nullptr || decompress != nullptr);
+
+  for (const auto &alg : ctx->cert_compression_algs) {
+    if (alg.alg_id == alg_id) {
+      return 0;
+    }
+  }
+
+  CertCompressionAlg alg;
+  alg.alg_id = alg_id;
+  alg.compress = compress;
+  alg.decompress = decompress;
+  return ctx->cert_compression_algs.Push(alg);
+}
+
+void SSL_CTX_set_tls_channel_id_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->channel_id_enabled = !!enabled;
+}
+
+int SSL_CTX_enable_tls_channel_id(SSL_CTX *ctx) {
+  SSL_CTX_set_tls_channel_id_enabled(ctx, 1);
+  return 1;
+}
+
+void SSL_set_tls_channel_id_enabled(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->channel_id_enabled = !!enabled;
+}
+
+int SSL_enable_tls_channel_id(SSL *ssl) {
+  SSL_set_tls_channel_id_enabled(ssl, 1);
+  return 1;
+}
+
+static int is_p256_key(EVP_PKEY *private_key) {
+  const EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(private_key);
+  return ec_key != NULL &&
+         EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key)) ==
+             NID_X9_62_prime256v1;
+}
+
+int SSL_CTX_set1_tls_channel_id(SSL_CTX *ctx, EVP_PKEY *private_key) {
+  if (!is_p256_key(private_key)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
+    return 0;
+  }
+
+  ctx->channel_id_private = UpRef(private_key);
+  ctx->channel_id_enabled = true;
+
+  return 1;
+}
+
+int SSL_set1_tls_channel_id(SSL *ssl, EVP_PKEY *private_key) {
+  if (!ssl->config) {
+    return 0;
+  }
+  if (!is_p256_key(private_key)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_NOT_P256);
+    return 0;
+  }
+
+  ssl->config->channel_id_private = UpRef(private_key);
+  ssl->config->channel_id_enabled = true;
+
+  return 1;
+}
+
+size_t SSL_get_tls_channel_id(SSL *ssl, uint8_t *out, size_t max_out) {
+  if (!ssl->s3->channel_id_valid) {
+    return 0;
+  }
+  OPENSSL_memcpy(out, ssl->s3->channel_id, (max_out < 64) ? max_out : 64);
+  return 64;
+}
+
+int SSL_set_token_binding_params(SSL *ssl, const uint8_t *params, size_t len) {
+  if (!ssl->config) {
+    return 0;
+  }
+  if (len > 256) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+  return ssl->config->token_binding_params.CopyFrom(MakeConstSpan(params, len));
+}
+
+int SSL_is_token_binding_negotiated(const SSL *ssl) {
+  return ssl->s3->token_binding_negotiated;
+}
+
+uint8_t SSL_get_negotiated_token_binding_param(const SSL *ssl) {
+  return ssl->s3->negotiated_token_binding_param;
+}
+
+size_t SSL_get0_certificate_types(const SSL *ssl, const uint8_t **out_types) {
+  Span<const uint8_t> types;
+  if (!ssl->server && ssl->s3->hs != nullptr) {
+    types = ssl->s3->hs->certificate_types;
+  }
+  *out_types = types.data();
+  return types.size();
+}
+
+size_t SSL_get0_peer_verify_algorithms(const SSL *ssl,
+                                       const uint16_t **out_sigalgs) {
+  Span<const uint16_t> sigalgs;
+  if (ssl->s3->hs != nullptr) {
+    sigalgs = ssl->s3->hs->peer_sigalgs;
+  }
+  *out_sigalgs = sigalgs.data();
+  return sigalgs.size();
+}
+
+EVP_PKEY *SSL_get_privatekey(const SSL *ssl) {
+  if (!ssl->config) {
+    assert(ssl->config);
+    return NULL;
+  }
+  if (ssl->config->cert != NULL) {
+    return ssl->config->cert->privatekey.get();
+  }
+
+  return NULL;
+}
+
+EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) {
+  if (ctx->cert != NULL) {
+    return ctx->cert->privatekey.get();
+  }
+
+  return NULL;
+}
+
+const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  return session == nullptr ? nullptr : session->cipher;
+}
+
+int SSL_session_reused(const SSL *ssl) {
+  return ssl->s3->session_reused || SSL_in_early_data(ssl);
+}
+
+const COMP_METHOD *SSL_get_current_compression(SSL *ssl) { return NULL; }
+
+const COMP_METHOD *SSL_get_current_expansion(SSL *ssl) { return NULL; }
+
+int SSL_get_server_tmp_key(SSL *ssl, EVP_PKEY **out_key) { return 0; }
+
+void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) {
+  ctx->quiet_shutdown = (mode != 0);
+}
+
+int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) {
+  return ctx->quiet_shutdown;
+}
+
+void SSL_set_quiet_shutdown(SSL *ssl, int mode) {
+  ssl->quiet_shutdown = (mode != 0);
+}
+
+int SSL_get_quiet_shutdown(const SSL *ssl) { return ssl->quiet_shutdown; }
+
+void SSL_set_shutdown(SSL *ssl, int mode) {
+  // It is an error to clear any bits that have already been set. (We can't try
+  // to get a second close_notify or send two.)
+  assert((SSL_get_shutdown(ssl) & mode) == SSL_get_shutdown(ssl));
+
+  if (mode & SSL_RECEIVED_SHUTDOWN &&
+      ssl->s3->read_shutdown == ssl_shutdown_none) {
+    ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+  }
+
+  if (mode & SSL_SENT_SHUTDOWN &&
+      ssl->s3->write_shutdown == ssl_shutdown_none) {
+    ssl->s3->write_shutdown = ssl_shutdown_close_notify;
+  }
+}
+
+int SSL_get_shutdown(const SSL *ssl) {
+  int ret = 0;
+  if (ssl->s3->read_shutdown != ssl_shutdown_none) {
+    // Historically, OpenSSL set |SSL_RECEIVED_SHUTDOWN| on both close_notify
+    // and fatal alert.
+    ret |= SSL_RECEIVED_SHUTDOWN;
+  }
+  if (ssl->s3->write_shutdown == ssl_shutdown_close_notify) {
+    // Historically, OpenSSL set |SSL_SENT_SHUTDOWN| on only close_notify.
+    ret |= SSL_SENT_SHUTDOWN;
+  }
+  return ret;
+}
+
+SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) { return ssl->ctx.get(); }
+
+SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) {
+  if (!ssl->config) {
+    return NULL;
+  }
+  if (ssl->ctx.get() == ctx) {
+    return ssl->ctx.get();
+  }
+
+  // One cannot change the X.509 callbacks during a connection.
+  if (ssl->ctx->x509_method != ctx->x509_method) {
+    assert(0);
+    return NULL;
+  }
+
+  UniquePtr<CERT> new_cert = ssl_cert_dup(ctx->cert.get());
+  if (!new_cert) {
+    return nullptr;
+  }
+
+  ssl->config->cert = std::move(new_cert);
+  ssl->ctx = UpRef(ctx);
+  ssl->enable_early_data = ssl->ctx->enable_early_data;
+
+  return ssl->ctx.get();
+}
+
+void SSL_set_info_callback(SSL *ssl,
+                           void (*cb)(const SSL *ssl, int type, int value)) {
+  ssl->info_callback = cb;
+}
+
+void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type,
+                                              int value) {
+  return ssl->info_callback;
+}
+
+int SSL_state(const SSL *ssl) {
+  return SSL_in_init(ssl) ? SSL_ST_INIT : SSL_ST_OK;
+}
+
+void SSL_set_state(SSL *ssl, int state) { }
+
+char *SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len) {
+  if (len <= 0) {
+    return NULL;
+  }
+  buf[0] = '\0';
+  return buf;
+}
+
+int SSL_get_shared_sigalgs(SSL *ssl, int idx, int *psign, int *phash,
+                           int *psignandhash, uint8_t *rsig, uint8_t *rhash) {
+  return 0;
+}
+
+int SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method) {
+  if (ctx->method->is_dtls) {
+    return 0;
+  }
+  ctx->quic_method = quic_method;
+  return 1;
+}
+
+int SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method) {
+  if (ssl->method->is_dtls) {
+    return 0;
+  }
+  ssl->quic_method = quic_method;
+  return 1;
+}
+
+int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                         CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_set_ex_data(SSL *ssl, int idx, void *data) {
+  return CRYPTO_set_ex_data(&ssl->ex_data, idx, data);
+}
+
+void *SSL_get_ex_data(const SSL *ssl, int idx) {
+  return CRYPTO_get_ex_data(&ssl->ex_data, idx);
+}
+
+int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused *unused,
+                             CRYPTO_EX_dup *dup_unused,
+                             CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class_ssl_ctx, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *data) {
+  return CRYPTO_set_ex_data(&ctx->ex_data, idx, data);
+}
+
+void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx) {
+  return CRYPTO_get_ex_data(&ctx->ex_data, idx);
+}
+
+int SSL_want(const SSL *ssl) { return ssl->s3->rwstate; }
+
+void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
+                                  RSA *(*cb)(SSL *ssl, int is_export,
+                                             int keylength)) {}
+
+void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
+                                                   int keylength)) {}
+
+void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
+                                 DH *(*cb)(SSL *ssl, int is_export,
+                                           int keylength)) {}
+
+void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*cb)(SSL *ssl, int is_export,
+                                                 int keylength)) {}
+
+static int use_psk_identity_hint(UniquePtr<char> *out,
+                                 const char *identity_hint) {
+  if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    return 0;
+  }
+
+  // Clear currently configured hint, if any.
+  out->reset();
+
+  // Treat the empty hint as not supplying one. Plain PSK makes it possible to
+  // send either no hint (omit ServerKeyExchange) or an empty hint, while
+  // ECDHE_PSK can only spell empty hint. Having different capabilities is odd,
+  // so we interpret empty and missing as identical.
+  if (identity_hint != NULL && identity_hint[0] != '\0') {
+    out->reset(OPENSSL_strdup(identity_hint));
+    if (*out == nullptr) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) {
+  return use_psk_identity_hint(&ctx->psk_identity_hint, identity_hint);
+}
+
+int SSL_use_psk_identity_hint(SSL *ssl, const char *identity_hint) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return use_psk_identity_hint(&ssl->config->psk_identity_hint, identity_hint);
+}
+
+const char *SSL_get_psk_identity_hint(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  if (ssl->config == NULL) {
+    assert(ssl->config);
+    return NULL;
+  }
+  return ssl->config->psk_identity_hint.get();
+}
+
+const char *SSL_get_psk_identity(const SSL *ssl) {
+  if (ssl == NULL) {
+    return NULL;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+  return session->psk_identity.get();
+}
+
+void SSL_set_psk_client_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                             unsigned max_identity_len, uint8_t *psk,
+                             unsigned max_psk_len)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->psk_client_callback = cb;
+}
+
+void SSL_CTX_set_psk_client_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *hint, char *identity,
+                                 unsigned max_identity_len, uint8_t *psk,
+                                 unsigned max_psk_len)) {
+  ctx->psk_client_callback = cb;
+}
+
+void SSL_set_psk_server_callback(
+    SSL *ssl, unsigned (*cb)(SSL *ssl, const char *identity, uint8_t *psk,
+                             unsigned max_psk_len)) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->psk_server_callback = cb;
+}
+
+void SSL_CTX_set_psk_server_callback(
+    SSL_CTX *ctx, unsigned (*cb)(SSL *ssl, const char *identity,
+                                 uint8_t *psk, unsigned max_psk_len)) {
+  ctx->psk_server_callback = cb;
+}
+
+void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
+                              void (*cb)(int write_p, int version,
+                                         int content_type, const void *buf,
+                                         size_t len, SSL *ssl, void *arg)) {
+  ctx->msg_callback = cb;
+}
+
+void SSL_CTX_set_msg_callback_arg(SSL_CTX *ctx, void *arg) {
+  ctx->msg_callback_arg = arg;
+}
+
+void SSL_set_msg_callback(SSL *ssl,
+                          void (*cb)(int write_p, int version, int content_type,
+                                     const void *buf, size_t len, SSL *ssl,
+                                     void *arg)) {
+  ssl->msg_callback = cb;
+}
+
+void SSL_set_msg_callback_arg(SSL *ssl, void *arg) {
+  ssl->msg_callback_arg = arg;
+}
+
+void SSL_CTX_set_keylog_callback(SSL_CTX *ctx,
+                                 void (*cb)(const SSL *ssl, const char *line)) {
+  ctx->keylog_callback = cb;
+}
+
+void (*SSL_CTX_get_keylog_callback(const SSL_CTX *ctx))(const SSL *ssl,
+                                                        const char *line) {
+  return ctx->keylog_callback;
+}
+
+void SSL_CTX_set_current_time_cb(SSL_CTX *ctx,
+                                 void (*cb)(const SSL *ssl,
+                                            struct timeval *out_clock)) {
+  ctx->current_time_cb = cb;
+}
+
+int SSL_is_init_finished(const SSL *ssl) {
+  return !SSL_in_init(ssl);
+}
+
+int SSL_in_init(const SSL *ssl) {
+  // This returns false once all the handshake state has been finalized, to
+  // allow callbacks and getters based on SSL_in_init to return the correct
+  // values.
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  return hs != nullptr && !hs->handshake_finalized;
+}
+
+int SSL_in_false_start(const SSL *ssl) {
+  if (ssl->s3->hs == NULL) {
+    return 0;
+  }
+  return ssl->s3->hs->in_false_start;
+}
+
+int SSL_cutthrough_complete(const SSL *ssl) {
+  return SSL_in_false_start(ssl);
+}
+
+int SSL_is_server(const SSL *ssl) { return ssl->server; }
+
+int SSL_is_dtls(const SSL *ssl) { return ssl->method->is_dtls; }
+
+void SSL_CTX_set_select_certificate_cb(
+    SSL_CTX *ctx,
+    enum ssl_select_cert_result_t (*cb)(const SSL_CLIENT_HELLO *)) {
+  ctx->select_certificate_cb = cb;
+}
+
+void SSL_CTX_set_dos_protection_cb(SSL_CTX *ctx,
+                                   int (*cb)(const SSL_CLIENT_HELLO *)) {
+  ctx->dos_protection_cb = cb;
+}
+
+void SSL_CTX_set_reverify_on_resume(SSL_CTX *ctx, int enabled) {
+  ctx->reverify_on_resume = !!enabled;
+}
+
+void SSL_set_enforce_rsa_key_usage(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->enforce_rsa_key_usage = !!enabled;
+}
+
+void SSL_set_renegotiate_mode(SSL *ssl, enum ssl_renegotiate_mode_t mode) {
+  ssl->renegotiate_mode = mode;
+
+  // Check if |ssl_can_renegotiate| has changed and the configuration may now be
+  // shed. HTTP clients may initially allow renegotiation for HTTP/1.1, and then
+  // disable after the handshake once the ALPN protocol is known to be HTTP/2.
+  ssl_maybe_shed_handshake_config(ssl);
+}
+
+int SSL_get_ivs(const SSL *ssl, const uint8_t **out_read_iv,
+                const uint8_t **out_write_iv, size_t *out_iv_len) {
+  size_t write_iv_len;
+  if (!ssl->s3->aead_read_ctx->GetIV(out_read_iv, out_iv_len) ||
+      !ssl->s3->aead_write_ctx->GetIV(out_write_iv, &write_iv_len) ||
+      *out_iv_len != write_iv_len) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static uint64_t be_to_u64(const uint8_t in[8]) {
+  return (((uint64_t)in[0]) << 56) | (((uint64_t)in[1]) << 48) |
+         (((uint64_t)in[2]) << 40) | (((uint64_t)in[3]) << 32) |
+         (((uint64_t)in[4]) << 24) | (((uint64_t)in[5]) << 16) |
+         (((uint64_t)in[6]) << 8) | ((uint64_t)in[7]);
+}
+
+uint64_t SSL_get_read_sequence(const SSL *ssl) {
+  // TODO(davidben): Internally represent sequence numbers as uint64_t.
+  if (SSL_is_dtls(ssl)) {
+    // max_seq_num already includes the epoch.
+    assert(ssl->d1->r_epoch == (ssl->d1->bitmap.max_seq_num >> 48));
+    return ssl->d1->bitmap.max_seq_num;
+  }
+  return be_to_u64(ssl->s3->read_sequence);
+}
+
+uint64_t SSL_get_write_sequence(const SSL *ssl) {
+  uint64_t ret = be_to_u64(ssl->s3->write_sequence);
+  if (SSL_is_dtls(ssl)) {
+    assert((ret >> 48) == 0);
+    ret |= ((uint64_t)ssl->d1->w_epoch) << 48;
+  }
+  return ret;
+}
+
+uint16_t SSL_get_peer_signature_algorithm(const SSL *ssl) {
+  // TODO(davidben): This checks the wrong session if there is a renegotiation
+  // in progress.
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->peer_signature_algorithm;
+}
+
+size_t SSL_get_client_random(const SSL *ssl, uint8_t *out, size_t max_out) {
+  if (max_out == 0) {
+    return sizeof(ssl->s3->client_random);
+  }
+  if (max_out > sizeof(ssl->s3->client_random)) {
+    max_out = sizeof(ssl->s3->client_random);
+  }
+  OPENSSL_memcpy(out, ssl->s3->client_random, max_out);
+  return max_out;
+}
+
+size_t SSL_get_server_random(const SSL *ssl, uint8_t *out, size_t max_out) {
+  if (max_out == 0) {
+    return sizeof(ssl->s3->server_random);
+  }
+  if (max_out > sizeof(ssl->s3->server_random)) {
+    max_out = sizeof(ssl->s3->server_random);
+  }
+  OPENSSL_memcpy(out, ssl->s3->server_random, max_out);
+  return max_out;
+}
+
+const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl) {
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs == NULL) {
+    return NULL;
+  }
+  return hs->new_cipher;
+}
+
+void SSL_set_retain_only_sha256_of_client_certs(SSL *ssl, int enabled) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->retain_only_sha256_of_client_certs = !!enabled;
+}
+
+void SSL_CTX_set_retain_only_sha256_of_client_certs(SSL_CTX *ctx, int enabled) {
+  ctx->retain_only_sha256_of_client_certs = !!enabled;
+}
+
+void SSL_CTX_set_grease_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->grease_enabled = !!enabled;
+}
+
+int32_t SSL_get_ticket_age_skew(const SSL *ssl) {
+  return ssl->s3->ticket_age_skew;
+}
+
+void SSL_CTX_set_false_start_allowed_without_alpn(SSL_CTX *ctx, int allowed) {
+  ctx->false_start_allowed_without_alpn = !!allowed;
+}
+
+int SSL_is_tls13_downgrade(const SSL *ssl) { return ssl->s3->tls13_downgrade; }
+
+int SSL_used_hello_retry_request(const SSL *ssl) {
+  return ssl->s3->used_hello_retry_request;
+}
+
+void SSL_CTX_set_ignore_tls13_downgrade(SSL_CTX *ctx, int ignore) {
+  ctx->ignore_tls13_downgrade = !!ignore;
+}
+
+void SSL_set_ignore_tls13_downgrade(SSL *ssl, int ignore) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->ignore_tls13_downgrade = !!ignore;
+}
+
+void SSL_set_shed_handshake_config(SSL *ssl, int enable) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->shed_handshake_config = !!enable;
+}
+
+void SSL_set_jdk11_workaround(SSL *ssl, int enable) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->jdk11_workaround = !!enable;
+}
+
+int SSL_clear(SSL *ssl) {
+  if (!ssl->config) {
+    return 0;  // SSL_clear may not be used after shedding config.
+  }
+
+  // In OpenSSL, reusing a client |SSL| with |SSL_clear| causes the previously
+  // established session to be offered the next time around. wpa_supplicant
+  // depends on this behavior, so emulate it.
+  UniquePtr<SSL_SESSION> session;
+  if (!ssl->server && ssl->s3->established_session != NULL) {
+    session = UpRef(ssl->s3->established_session);
+  }
+
+  // The ssl->d1->mtu is simultaneously configuration (preserved across
+  // clear) and connection-specific state (gets reset).
+  //
+  // TODO(davidben): Avoid this.
+  unsigned mtu = 0;
+  if (ssl->d1 != NULL) {
+    mtu = ssl->d1->mtu;
+  }
+
+  ssl->method->ssl_free(ssl);
+  if (!ssl->method->ssl_new(ssl)) {
+    return 0;
+  }
+
+  if (SSL_is_dtls(ssl) && (SSL_get_options(ssl) & SSL_OP_NO_QUERY_MTU)) {
+    ssl->d1->mtu = mtu;
+  }
+
+  if (session != nullptr) {
+    SSL_set_session(ssl, session.get());
+  }
+
+  return 1;
+}
+
+int SSL_CTX_sess_connect(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_connect_good(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_connect_renegotiate(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept_renegotiate(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_accept_good(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_hits(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_cb_hits(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_misses(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_timeouts(const SSL_CTX *ctx) { return 0; }
+int SSL_CTX_sess_cache_full(const SSL_CTX *ctx) { return 0; }
+
+int SSL_num_renegotiations(const SSL *ssl) {
+  return SSL_total_renegotiations(ssl);
+}
+
+int SSL_CTX_need_tmp_RSA(const SSL_CTX *ctx) { return 0; }
+int SSL_need_tmp_RSA(const SSL *ssl) { return 0; }
+int SSL_CTX_set_tmp_rsa(SSL_CTX *ctx, const RSA *rsa) { return 1; }
+int SSL_set_tmp_rsa(SSL *ssl, const RSA *rsa) { return 1; }
+void ERR_load_SSL_strings(void) {}
+void SSL_load_error_strings(void) {}
+int SSL_cache_hit(SSL *ssl) { return SSL_session_reused(ssl); }
+
+int SSL_CTX_set_tmp_ecdh(SSL_CTX *ctx, const EC_KEY *ec_key) {
+  if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
+  return SSL_CTX_set1_curves(ctx, &nid, 1);
+}
+
+int SSL_set_tmp_ecdh(SSL *ssl, const EC_KEY *ec_key) {
+  if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+  int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec_key));
+  return SSL_set1_curves(ssl, &nid, 1);
+}
+
+void SSL_CTX_set_ticket_aead_method(SSL_CTX *ctx,
+                                    const SSL_TICKET_AEAD_METHOD *aead_method) {
+  ctx->ticket_aead_method = aead_method;
+}
+
+int SSL_set_tlsext_status_type(SSL *ssl, int type) {
+  if (!ssl->config) {
+    return 0;
+  }
+  ssl->config->ocsp_stapling_enabled = type == TLSEXT_STATUSTYPE_ocsp;
+  return 1;
+}
+
+int SSL_get_tlsext_status_type(const SSL *ssl) {
+  if (ssl->server) {
+    SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+    return hs != nullptr && hs->ocsp_stapling_requested
+        ? TLSEXT_STATUSTYPE_ocsp
+        : TLSEXT_STATUSTYPE_nothing;
+  }
+
+  return ssl->config != nullptr && ssl->config->ocsp_stapling_enabled
+             ? TLSEXT_STATUSTYPE_ocsp
+             : TLSEXT_STATUSTYPE_nothing;
+}
+
+int SSL_set_tlsext_status_ocsp_resp(SSL *ssl, uint8_t *resp, size_t resp_len) {
+  if (SSL_set_ocsp_response(ssl, resp, resp_len)) {
+    OPENSSL_free(resp);
+    return 1;
+  }
+  return 0;
+}
+
+size_t SSL_get_tlsext_status_ocsp_resp(const SSL *ssl, const uint8_t **out) {
+  size_t ret;
+  SSL_get0_ocsp_response(ssl, out, &ret);
+  return ret;
+}
+
+int SSL_CTX_set_tlsext_status_cb(SSL_CTX *ctx,
+                                 int (*callback)(SSL *ssl, void *arg)) {
+  ctx->legacy_ocsp_callback = callback;
+  return 1;
+}
+
+int SSL_CTX_set_tlsext_status_arg(SSL_CTX *ctx, void *arg) {
+  ctx->legacy_ocsp_callback_arg = arg;
+  return 1;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc
new file mode 100644
index 0000000..f2936bb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc	
@@ -0,0 +1,824 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/ec_key.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_is_key_type_supported(int key_type) {
+  return key_type == EVP_PKEY_RSA || key_type == EVP_PKEY_EC ||
+         key_type == EVP_PKEY_ED25519;
+}
+
+static bool ssl_set_pkey(CERT *cert, EVP_PKEY *pkey) {
+  if (!ssl_is_key_type_supported(pkey->type)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return false;
+  }
+
+  if (cert->chain != nullptr &&
+      sk_CRYPTO_BUFFER_value(cert->chain.get(), 0) != nullptr &&
+      // Sanity-check that the private key and the certificate match.
+      !ssl_cert_check_private_key(cert, pkey)) {
+    return false;
+  }
+
+  cert->privatekey = UpRef(pkey);
+  return true;
+}
+
+typedef struct {
+  uint16_t sigalg;
+  int pkey_type;
+  int curve;
+  const EVP_MD *(*digest_func)(void);
+  bool is_rsa_pss;
+} SSL_SIGNATURE_ALGORITHM;
+
+static const SSL_SIGNATURE_ALGORITHM kSignatureAlgorithms[] = {
+    {SSL_SIGN_RSA_PKCS1_MD5_SHA1, EVP_PKEY_RSA, NID_undef, &EVP_md5_sha1,
+     false},
+    {SSL_SIGN_RSA_PKCS1_SHA1, EVP_PKEY_RSA, NID_undef, &EVP_sha1, false},
+    {SSL_SIGN_RSA_PKCS1_SHA256, EVP_PKEY_RSA, NID_undef, &EVP_sha256, false},
+    {SSL_SIGN_RSA_PKCS1_SHA384, EVP_PKEY_RSA, NID_undef, &EVP_sha384, false},
+    {SSL_SIGN_RSA_PKCS1_SHA512, EVP_PKEY_RSA, NID_undef, &EVP_sha512, false},
+
+    {SSL_SIGN_RSA_PSS_RSAE_SHA256, EVP_PKEY_RSA, NID_undef, &EVP_sha256, true},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA384, EVP_PKEY_RSA, NID_undef, &EVP_sha384, true},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA512, EVP_PKEY_RSA, NID_undef, &EVP_sha512, true},
+
+    {SSL_SIGN_ECDSA_SHA1, EVP_PKEY_EC, NID_undef, &EVP_sha1, false},
+    {SSL_SIGN_ECDSA_SECP256R1_SHA256, EVP_PKEY_EC, NID_X9_62_prime256v1,
+     &EVP_sha256, false},
+    {SSL_SIGN_ECDSA_SECP384R1_SHA384, EVP_PKEY_EC, NID_secp384r1, &EVP_sha384,
+     false},
+    {SSL_SIGN_ECDSA_SECP521R1_SHA512, EVP_PKEY_EC, NID_secp521r1, &EVP_sha512,
+     false},
+
+    {SSL_SIGN_ED25519, EVP_PKEY_ED25519, NID_undef, nullptr, false},
+};
+
+static const SSL_SIGNATURE_ALGORITHM *get_signature_algorithm(uint16_t sigalg) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kSignatureAlgorithms); i++) {
+    if (kSignatureAlgorithms[i].sigalg == sigalg) {
+      return &kSignatureAlgorithms[i];
+    }
+  }
+  return NULL;
+}
+
+bool ssl_has_private_key(const SSL_HANDSHAKE *hs) {
+  if (hs->config->cert->privatekey != nullptr ||
+      hs->config->cert->key_method != nullptr ||
+      ssl_signing_with_dc(hs)) {
+    return true;
+  }
+
+  return false;
+}
+
+static bool pkey_supports_algorithm(const SSL *ssl, EVP_PKEY *pkey,
+                                    uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg == NULL ||
+      EVP_PKEY_id(pkey) != alg->pkey_type) {
+    return false;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    // RSA keys may only be used with RSA-PSS.
+    if (alg->pkey_type == EVP_PKEY_RSA && !alg->is_rsa_pss) {
+      return false;
+    }
+
+    // EC keys have a curve requirement.
+    if (alg->pkey_type == EVP_PKEY_EC &&
+        (alg->curve == NID_undef ||
+         EC_GROUP_get_curve_name(
+             EC_KEY_get0_group(EVP_PKEY_get0_EC_KEY(pkey))) != alg->curve)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool setup_ctx(SSL *ssl, EVP_MD_CTX *ctx, EVP_PKEY *pkey,
+                      uint16_t sigalg, bool is_verify) {
+  if (!pkey_supports_algorithm(ssl, pkey, sigalg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SIGNATURE_TYPE);
+    return false;
+  }
+
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  const EVP_MD *digest = alg->digest_func != NULL ? alg->digest_func() : NULL;
+  EVP_PKEY_CTX *pctx;
+  if (is_verify) {
+    if (!EVP_DigestVerifyInit(ctx, &pctx, digest, NULL, pkey)) {
+      return false;
+    }
+  } else if (!EVP_DigestSignInit(ctx, &pctx, digest, NULL, pkey)) {
+    return false;
+  }
+
+  if (alg->is_rsa_pss) {
+    if (!EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) ||
+        !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, -1 /* salt len = hash len */)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+enum ssl_private_key_result_t ssl_private_key_sign(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, size_t max_out,
+    uint16_t sigalg, Span<const uint8_t> in) {
+  SSL *const ssl = hs->ssl;
+  const SSL_PRIVATE_KEY_METHOD *key_method = hs->config->cert->key_method;
+  EVP_PKEY *privatekey = hs->config->cert->privatekey.get();
+  if (ssl_signing_with_dc(hs)) {
+    key_method = hs->config->cert->dc_key_method;
+    privatekey = hs->config->cert->dc_privatekey.get();
+  }
+
+  if (key_method != NULL) {
+    enum ssl_private_key_result_t ret;
+    if (hs->pending_private_key_op) {
+      ret = key_method->complete(ssl, out, out_len, max_out);
+    } else {
+      ret = key_method->sign(ssl, out, out_len, max_out,
+                             sigalg, in.data(), in.size());
+    }
+    if (ret == ssl_private_key_failure) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PRIVATE_KEY_OPERATION_FAILED);
+    }
+    hs->pending_private_key_op = ret == ssl_private_key_retry;
+    return ret;
+  }
+
+  *out_len = max_out;
+  ScopedEVP_MD_CTX ctx;
+  if (!setup_ctx(ssl, ctx.get(), privatekey, sigalg, false /* sign */) ||
+      !EVP_DigestSign(ctx.get(), out, out_len, in.data(), in.size())) {
+    return ssl_private_key_failure;
+  }
+  return ssl_private_key_success;
+}
+
+bool ssl_public_key_verify(SSL *ssl, Span<const uint8_t> signature,
+                           uint16_t sigalg, EVP_PKEY *pkey,
+                           Span<const uint8_t> in) {
+  ScopedEVP_MD_CTX ctx;
+  if (!setup_ctx(ssl, ctx.get(), pkey, sigalg, true /* verify */)) {
+    return false;
+  }
+  bool ok = EVP_DigestVerify(ctx.get(), signature.data(), signature.size(),
+                             in.data(), in.size());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+  ERR_clear_error();
+#endif
+  return ok;
+}
+
+enum ssl_private_key_result_t ssl_private_key_decrypt(SSL_HANDSHAKE *hs,
+                                                      uint8_t *out,
+                                                      size_t *out_len,
+                                                      size_t max_out,
+                                                      Span<const uint8_t> in) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->cert->key_method != NULL) {
+    enum ssl_private_key_result_t ret;
+    if (hs->pending_private_key_op) {
+      ret = hs->config->cert->key_method->complete(ssl, out, out_len, max_out);
+    } else {
+      ret = hs->config->cert->key_method->decrypt(ssl, out, out_len, max_out,
+                                                  in.data(), in.size());
+    }
+    if (ret == ssl_private_key_failure) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PRIVATE_KEY_OPERATION_FAILED);
+    }
+    hs->pending_private_key_op = ret == ssl_private_key_retry;
+    return ret;
+  }
+
+  RSA *rsa = EVP_PKEY_get0_RSA(hs->config->cert->privatekey.get());
+  if (rsa == NULL) {
+    // Decrypt operations are only supported for RSA keys.
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  // Decrypt with no padding. PKCS#1 padding will be removed as part of the
+  // timing-sensitive code by the caller.
+  if (!RSA_decrypt(rsa, out_len, out, max_out, in.data(), in.size(),
+                   RSA_NO_PADDING)) {
+    return ssl_private_key_failure;
+  }
+  return ssl_private_key_success;
+}
+
+bool ssl_private_key_supports_signature_algorithm(SSL_HANDSHAKE *hs,
+                                                  uint16_t sigalg) {
+  SSL *const ssl = hs->ssl;
+  if (!pkey_supports_algorithm(ssl, hs->local_pubkey.get(), sigalg)) {
+    return false;
+  }
+
+  // Ensure the RSA key is large enough for the hash. RSASSA-PSS requires that
+  // emLen be at least hLen + sLen + 2. Both hLen and sLen are the size of the
+  // hash in TLS. Reasonable RSA key sizes are large enough for the largest
+  // defined RSASSA-PSS algorithm, but 1024-bit RSA is slightly too small for
+  // SHA-512. 1024-bit RSA is sometimes used for test credentials, so check the
+  // size so that we can fall back to another algorithm in that case.
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg->is_rsa_pss && (size_t)EVP_PKEY_size(hs->local_pubkey.get()) <
+                             2 * EVP_MD_size(alg->digest_func()) + 2) {
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa) {
+  if (rsa == NULL || ssl->config == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+  if (!pkey ||
+      !EVP_PKEY_set1_RSA(pkey.get(), rsa)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
+    return 0;
+  }
+
+  return ssl_set_pkey(ssl->config->cert.get(), pkey.get());
+}
+
+int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der, size_t der_len) {
+  UniquePtr<RSA> rsa(RSA_private_key_from_bytes(der, der_len));
+  if (!rsa) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_use_RSAPrivateKey(ssl, rsa.get());
+}
+
+int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey) {
+  if (pkey == NULL || ssl->config == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  return ssl_set_pkey(ssl->config->cert.get(), pkey);
+}
+
+int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const uint8_t *der,
+                            size_t der_len) {
+  if (der_len > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  const uint8_t *p = der;
+  UniquePtr<EVP_PKEY> pkey(d2i_PrivateKey(type, NULL, &p, (long)der_len));
+  if (!pkey || p != der + der_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_use_PrivateKey(ssl, pkey.get());
+}
+
+int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa) {
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+  if (!pkey ||
+      !EVP_PKEY_set1_RSA(pkey.get(), rsa)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
+    return 0;
+  }
+
+  return ssl_set_pkey(ctx->cert.get(), pkey.get());
+}
+
+int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const uint8_t *der,
+                                   size_t der_len) {
+  UniquePtr<RSA> rsa(RSA_private_key_from_bytes(der, der_len));
+  if (!rsa) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_CTX_use_RSAPrivateKey(ctx, rsa.get());
+}
+
+int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey) {
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  return ssl_set_pkey(ctx->cert.get(), pkey);
+}
+
+int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const uint8_t *der,
+                                size_t der_len) {
+  if (der_len > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  const uint8_t *p = der;
+  UniquePtr<EVP_PKEY> pkey(d2i_PrivateKey(type, NULL, &p, (long)der_len));
+  if (!pkey || p != der + der_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_CTX_use_PrivateKey(ctx, pkey.get());
+}
+
+void SSL_set_private_key_method(SSL *ssl,
+                                const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->cert->key_method = key_method;
+}
+
+void SSL_CTX_set_private_key_method(SSL_CTX *ctx,
+                                    const SSL_PRIVATE_KEY_METHOD *key_method) {
+  ctx->cert->key_method = key_method;
+}
+
+static constexpr size_t kMaxSignatureAlgorithmNameLen = 23;
+
+// This was "constexpr" rather than "const", but that triggered a bug in MSVC
+// where it didn't pad the strings to the correct length.
+static const struct {
+  uint16_t signature_algorithm;
+  const char name[kMaxSignatureAlgorithmNameLen];
+} kSignatureAlgorithmNames[] = {
+    {SSL_SIGN_RSA_PKCS1_MD5_SHA1, "rsa_pkcs1_md5_sha1"},
+    {SSL_SIGN_RSA_PKCS1_SHA1, "rsa_pkcs1_sha1"},
+    {SSL_SIGN_RSA_PKCS1_SHA256, "rsa_pkcs1_sha256"},
+    {SSL_SIGN_RSA_PKCS1_SHA384, "rsa_pkcs1_sha384"},
+    {SSL_SIGN_RSA_PKCS1_SHA512, "rsa_pkcs1_sha512"},
+    {SSL_SIGN_ECDSA_SHA1, "ecdsa_sha1"},
+    {SSL_SIGN_ECDSA_SECP256R1_SHA256, "ecdsa_secp256r1_sha256"},
+    {SSL_SIGN_ECDSA_SECP384R1_SHA384, "ecdsa_secp384r1_sha384"},
+    {SSL_SIGN_ECDSA_SECP521R1_SHA512, "ecdsa_secp521r1_sha512"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA256, "rsa_pss_rsae_sha256"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA384, "rsa_pss_rsae_sha384"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA512, "rsa_pss_rsae_sha512"},
+    {SSL_SIGN_ED25519, "ed25519"},
+};
+
+const char *SSL_get_signature_algorithm_name(uint16_t sigalg,
+                                             int include_curve) {
+  if (!include_curve) {
+    switch (sigalg) {
+      case SSL_SIGN_ECDSA_SECP256R1_SHA256:
+        return "ecdsa_sha256";
+      case SSL_SIGN_ECDSA_SECP384R1_SHA384:
+        return "ecdsa_sha384";
+      case SSL_SIGN_ECDSA_SECP521R1_SHA512:
+        return "ecdsa_sha512";
+    }
+  }
+
+  for (const auto &candidate : kSignatureAlgorithmNames) {
+    if (candidate.signature_algorithm == sigalg) {
+      return candidate.name;
+    }
+  }
+
+  return NULL;
+}
+
+int SSL_get_signature_algorithm_key_type(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  return alg != nullptr ? alg->pkey_type : EVP_PKEY_NONE;
+}
+
+const EVP_MD *SSL_get_signature_algorithm_digest(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg == nullptr || alg->digest_func == nullptr) {
+    return nullptr;
+  }
+  return alg->digest_func();
+}
+
+int SSL_is_signature_algorithm_rsa_pss(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  return alg != nullptr && alg->is_rsa_pss;
+}
+
+int SSL_CTX_set_signing_algorithm_prefs(SSL_CTX *ctx, const uint16_t *prefs,
+                                        size_t num_prefs) {
+  return ctx->cert->sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
+
+int SSL_set_signing_algorithm_prefs(SSL *ssl, const uint16_t *prefs,
+                                    size_t num_prefs) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->cert->sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
+
+static constexpr struct {
+  int pkey_type;
+  int hash_nid;
+  uint16_t signature_algorithm;
+} kSignatureAlgorithmsMapping[] = {
+    {EVP_PKEY_RSA, NID_sha1, SSL_SIGN_RSA_PKCS1_SHA1},
+    {EVP_PKEY_RSA, NID_sha256, SSL_SIGN_RSA_PKCS1_SHA256},
+    {EVP_PKEY_RSA, NID_sha384, SSL_SIGN_RSA_PKCS1_SHA384},
+    {EVP_PKEY_RSA, NID_sha512, SSL_SIGN_RSA_PKCS1_SHA512},
+    {EVP_PKEY_RSA_PSS, NID_sha256, SSL_SIGN_RSA_PSS_RSAE_SHA256},
+    {EVP_PKEY_RSA_PSS, NID_sha384, SSL_SIGN_RSA_PSS_RSAE_SHA384},
+    {EVP_PKEY_RSA_PSS, NID_sha512, SSL_SIGN_RSA_PSS_RSAE_SHA512},
+    {EVP_PKEY_EC, NID_sha1, SSL_SIGN_ECDSA_SHA1},
+    {EVP_PKEY_EC, NID_sha256, SSL_SIGN_ECDSA_SECP256R1_SHA256},
+    {EVP_PKEY_EC, NID_sha384, SSL_SIGN_ECDSA_SECP384R1_SHA384},
+    {EVP_PKEY_EC, NID_sha512, SSL_SIGN_ECDSA_SECP521R1_SHA512},
+    {EVP_PKEY_ED25519, NID_undef, SSL_SIGN_ED25519},
+};
+
+static bool parse_sigalg_pairs(Array<uint16_t> *out, const int *values,
+                               size_t num_values) {
+  if ((num_values & 1) == 1) {
+    return false;
+  }
+
+  const size_t num_pairs = num_values / 2;
+  if (!out->Init(num_pairs)) {
+    return false;
+  }
+
+  for (size_t i = 0; i < num_values; i += 2) {
+    const int hash_nid = values[i];
+    const int pkey_type = values[i+1];
+
+    bool found = false;
+    for (const auto &candidate : kSignatureAlgorithmsMapping) {
+      if (candidate.pkey_type == pkey_type && candidate.hash_nid == hash_nid) {
+        (*out)[i / 2] = candidate.signature_algorithm;
+        found = true;
+        break;
+      }
+    }
+
+    if (!found) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+      ERR_add_error_dataf("unknown hash:%d pkey:%d", hash_nid, pkey_type);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static int compare_uint16_t(const void *p1, const void *p2) {
+  uint16_t u1 = *((const uint16_t *)p1);
+  uint16_t u2 = *((const uint16_t *)p2);
+  if (u1 < u2) {
+    return -1;
+  } else if (u1 > u2) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+static bool sigalgs_unique(Span<const uint16_t> in_sigalgs) {
+  if (in_sigalgs.size() < 2) {
+    return true;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!sigalgs.CopyFrom(in_sigalgs)) {
+    return false;
+  }
+
+  qsort(sigalgs.data(), sigalgs.size(), sizeof(uint16_t), compare_uint16_t);
+
+  for (size_t i = 1; i < sigalgs.size(); i++) {
+    if (sigalgs[i - 1] == sigalgs[i]) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_SIGNATURE_ALGORITHM);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+int SSL_CTX_set1_sigalgs(SSL_CTX *ctx, const int *values, size_t num_values) {
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalg_pairs(&sigalgs, values, num_values) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_CTX_set_signing_algorithm_prefs(ctx, sigalgs.data(),
+                                           sigalgs.size()) ||
+      !ctx->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_set1_sigalgs(SSL *ssl, const int *values, size_t num_values) {
+  if (!ssl->config) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalg_pairs(&sigalgs, values, num_values) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_set_signing_algorithm_prefs(ssl, sigalgs.data(), sigalgs.size()) ||
+      !ssl->config->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static bool parse_sigalgs_list(Array<uint16_t> *out, const char *str) {
+  // str looks like "RSA+SHA1:ECDSA+SHA256:ecdsa_secp256r1_sha256".
+
+  // Count colons to give the number of output elements from any successful
+  // parse.
+  size_t num_elements = 1;
+  size_t len = 0;
+  for (const char *p = str; *p; p++) {
+    len++;
+    if (*p == ':') {
+      num_elements++;
+    }
+  }
+
+  if (!out->Init(num_elements)) {
+    return false;
+  }
+  size_t out_i = 0;
+
+  enum {
+    pkey_or_name,
+    hash_name,
+  } state = pkey_or_name;
+
+  char buf[kMaxSignatureAlgorithmNameLen];
+  // buf_used is always < sizeof(buf). I.e. it's always safe to write
+  // buf[buf_used] = 0.
+  size_t buf_used = 0;
+
+  int pkey_type = 0, hash_nid = 0;
+
+  // Note that the loop runs to len+1, i.e. it'll process the terminating NUL.
+  for (size_t offset = 0; offset < len+1; offset++) {
+    const char c = str[offset];
+
+    switch (c) {
+      case '+':
+        if (state == hash_name) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("+ found in hash name at offset %zu", offset);
+          return false;
+        }
+        if (buf_used == 0) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("empty public key type at offset %zu", offset);
+          return false;
+        }
+        buf[buf_used] = 0;
+
+        if (strcmp(buf, "RSA") == 0) {
+          pkey_type = EVP_PKEY_RSA;
+        } else if (strcmp(buf, "RSA-PSS") == 0 ||
+                   strcmp(buf, "PSS") == 0) {
+          pkey_type = EVP_PKEY_RSA_PSS;
+        } else if (strcmp(buf, "ECDSA") == 0) {
+          pkey_type = EVP_PKEY_EC;
+        } else {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("unknown public key type '%s'", buf);
+          return false;
+        }
+
+        state = hash_name;
+        buf_used = 0;
+        break;
+
+      case ':':
+        OPENSSL_FALLTHROUGH;
+      case 0:
+        if (buf_used == 0) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("empty element at offset %zu", offset);
+          return false;
+        }
+
+        buf[buf_used] = 0;
+
+        if (state == pkey_or_name) {
+          // No '+' was seen thus this is a TLS 1.3-style name.
+          bool found = false;
+          for (const auto &candidate : kSignatureAlgorithmNames) {
+            if (strcmp(candidate.name, buf) == 0) {
+              assert(out_i < num_elements);
+              (*out)[out_i++] = candidate.signature_algorithm;
+              found = true;
+              break;
+            }
+          }
+
+          if (!found) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown signature algorithm '%s'", buf);
+            return false;
+          }
+        } else {
+          if (strcmp(buf, "SHA1") == 0) {
+            hash_nid = NID_sha1;
+          } else if (strcmp(buf, "SHA256") == 0) {
+            hash_nid = NID_sha256;
+          } else if (strcmp(buf, "SHA384") == 0) {
+            hash_nid = NID_sha384;
+          } else if (strcmp(buf, "SHA512") == 0) {
+            hash_nid = NID_sha512;
+          } else {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown hash function '%s'", buf);
+            return false;
+          }
+
+          bool found = false;
+          for (const auto &candidate : kSignatureAlgorithmsMapping) {
+            if (candidate.pkey_type == pkey_type &&
+                candidate.hash_nid == hash_nid) {
+              assert(out_i < num_elements);
+              (*out)[out_i++] = candidate.signature_algorithm;
+              found = true;
+              break;
+            }
+          }
+
+          if (!found) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown pkey:%d hash:%s", pkey_type, buf);
+            return false;
+          }
+        }
+
+        state = pkey_or_name;
+        buf_used = 0;
+        break;
+
+      default:
+        if (buf_used == sizeof(buf) - 1) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("substring too long at offset %zu", offset);
+          return false;
+        }
+
+        if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') ||
+            (c >= 'A' && c <= 'Z') || c == '-' || c == '_') {
+          buf[buf_used++] = c;
+        } else {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("invalid character 0x%02x at offest %zu", c,
+                              offset);
+          return false;
+        }
+    }
+  }
+
+  assert(out_i == out->size());
+  return true;
+}
+
+int SSL_CTX_set1_sigalgs_list(SSL_CTX *ctx, const char *str) {
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalgs_list(&sigalgs, str) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_CTX_set_signing_algorithm_prefs(ctx, sigalgs.data(),
+                                           sigalgs.size()) ||
+      !ctx->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_set1_sigalgs_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalgs_list(&sigalgs, str) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_set_signing_algorithm_prefs(ssl, sigalgs.data(), sigalgs.size()) ||
+      !ssl->config->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_CTX_set_verify_algorithm_prefs(SSL_CTX *ctx, const uint16_t *prefs,
+                                       size_t num_prefs) {
+  return ctx->verify_sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc.grpc_back
new file mode 100644
index 0000000..23f8d12
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_privkey.cc.grpc_back	
@@ -0,0 +1,824 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+
+#include <openssl/ec.h>
+#include <openssl/ec_key.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_is_key_type_supported(int key_type) {
+  return key_type == EVP_PKEY_RSA || key_type == EVP_PKEY_EC ||
+         key_type == EVP_PKEY_ED25519;
+}
+
+static bool ssl_set_pkey(CERT *cert, EVP_PKEY *pkey) {
+  if (!ssl_is_key_type_supported(pkey->type)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
+    return false;
+  }
+
+  if (cert->chain != nullptr &&
+      sk_CRYPTO_BUFFER_value(cert->chain.get(), 0) != nullptr &&
+      // Sanity-check that the private key and the certificate match.
+      !ssl_cert_check_private_key(cert, pkey)) {
+    return false;
+  }
+
+  cert->privatekey = UpRef(pkey);
+  return true;
+}
+
+typedef struct {
+  uint16_t sigalg;
+  int pkey_type;
+  int curve;
+  const EVP_MD *(*digest_func)(void);
+  bool is_rsa_pss;
+} SSL_SIGNATURE_ALGORITHM;
+
+static const SSL_SIGNATURE_ALGORITHM kSignatureAlgorithms[] = {
+    {SSL_SIGN_RSA_PKCS1_MD5_SHA1, EVP_PKEY_RSA, NID_undef, &EVP_md5_sha1,
+     false},
+    {SSL_SIGN_RSA_PKCS1_SHA1, EVP_PKEY_RSA, NID_undef, &EVP_sha1, false},
+    {SSL_SIGN_RSA_PKCS1_SHA256, EVP_PKEY_RSA, NID_undef, &EVP_sha256, false},
+    {SSL_SIGN_RSA_PKCS1_SHA384, EVP_PKEY_RSA, NID_undef, &EVP_sha384, false},
+    {SSL_SIGN_RSA_PKCS1_SHA512, EVP_PKEY_RSA, NID_undef, &EVP_sha512, false},
+
+    {SSL_SIGN_RSA_PSS_RSAE_SHA256, EVP_PKEY_RSA, NID_undef, &EVP_sha256, true},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA384, EVP_PKEY_RSA, NID_undef, &EVP_sha384, true},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA512, EVP_PKEY_RSA, NID_undef, &EVP_sha512, true},
+
+    {SSL_SIGN_ECDSA_SHA1, EVP_PKEY_EC, NID_undef, &EVP_sha1, false},
+    {SSL_SIGN_ECDSA_SECP256R1_SHA256, EVP_PKEY_EC, NID_X9_62_prime256v1,
+     &EVP_sha256, false},
+    {SSL_SIGN_ECDSA_SECP384R1_SHA384, EVP_PKEY_EC, NID_secp384r1, &EVP_sha384,
+     false},
+    {SSL_SIGN_ECDSA_SECP521R1_SHA512, EVP_PKEY_EC, NID_secp521r1, &EVP_sha512,
+     false},
+
+    {SSL_SIGN_ED25519, EVP_PKEY_ED25519, NID_undef, nullptr, false},
+};
+
+static const SSL_SIGNATURE_ALGORITHM *get_signature_algorithm(uint16_t sigalg) {
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kSignatureAlgorithms); i++) {
+    if (kSignatureAlgorithms[i].sigalg == sigalg) {
+      return &kSignatureAlgorithms[i];
+    }
+  }
+  return NULL;
+}
+
+bool ssl_has_private_key(const SSL_HANDSHAKE *hs) {
+  if (hs->config->cert->privatekey != nullptr ||
+      hs->config->cert->key_method != nullptr ||
+      ssl_signing_with_dc(hs)) {
+    return true;
+  }
+
+  return false;
+}
+
+static bool pkey_supports_algorithm(const SSL *ssl, EVP_PKEY *pkey,
+                                    uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg == NULL ||
+      EVP_PKEY_id(pkey) != alg->pkey_type) {
+    return false;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    // RSA keys may only be used with RSA-PSS.
+    if (alg->pkey_type == EVP_PKEY_RSA && !alg->is_rsa_pss) {
+      return false;
+    }
+
+    // EC keys have a curve requirement.
+    if (alg->pkey_type == EVP_PKEY_EC &&
+        (alg->curve == NID_undef ||
+         EC_GROUP_get_curve_name(
+             EC_KEY_get0_group(EVP_PKEY_get0_EC_KEY(pkey))) != alg->curve)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool setup_ctx(SSL *ssl, EVP_MD_CTX *ctx, EVP_PKEY *pkey,
+                      uint16_t sigalg, bool is_verify) {
+  if (!pkey_supports_algorithm(ssl, pkey, sigalg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SIGNATURE_TYPE);
+    return false;
+  }
+
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  const EVP_MD *digest = alg->digest_func != NULL ? alg->digest_func() : NULL;
+  EVP_PKEY_CTX *pctx;
+  if (is_verify) {
+    if (!EVP_DigestVerifyInit(ctx, &pctx, digest, NULL, pkey)) {
+      return false;
+    }
+  } else if (!EVP_DigestSignInit(ctx, &pctx, digest, NULL, pkey)) {
+    return false;
+  }
+
+  if (alg->is_rsa_pss) {
+    if (!EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) ||
+        !EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, -1 /* salt len = hash len */)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+enum ssl_private_key_result_t ssl_private_key_sign(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, size_t max_out,
+    uint16_t sigalg, Span<const uint8_t> in) {
+  SSL *const ssl = hs->ssl;
+  const SSL_PRIVATE_KEY_METHOD *key_method = hs->config->cert->key_method;
+  EVP_PKEY *privatekey = hs->config->cert->privatekey.get();
+  if (ssl_signing_with_dc(hs)) {
+    key_method = hs->config->cert->dc_key_method;
+    privatekey = hs->config->cert->dc_privatekey.get();
+  }
+
+  if (key_method != NULL) {
+    enum ssl_private_key_result_t ret;
+    if (hs->pending_private_key_op) {
+      ret = key_method->complete(ssl, out, out_len, max_out);
+    } else {
+      ret = key_method->sign(ssl, out, out_len, max_out,
+                             sigalg, in.data(), in.size());
+    }
+    if (ret == ssl_private_key_failure) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PRIVATE_KEY_OPERATION_FAILED);
+    }
+    hs->pending_private_key_op = ret == ssl_private_key_retry;
+    return ret;
+  }
+
+  *out_len = max_out;
+  ScopedEVP_MD_CTX ctx;
+  if (!setup_ctx(ssl, ctx.get(), privatekey, sigalg, false /* sign */) ||
+      !EVP_DigestSign(ctx.get(), out, out_len, in.data(), in.size())) {
+    return ssl_private_key_failure;
+  }
+  return ssl_private_key_success;
+}
+
+bool ssl_public_key_verify(SSL *ssl, Span<const uint8_t> signature,
+                           uint16_t sigalg, EVP_PKEY *pkey,
+                           Span<const uint8_t> in) {
+  ScopedEVP_MD_CTX ctx;
+  if (!setup_ctx(ssl, ctx.get(), pkey, sigalg, true /* verify */)) {
+    return false;
+  }
+  bool ok = EVP_DigestVerify(ctx.get(), signature.data(), signature.size(),
+                             in.data(), in.size());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+  ERR_clear_error();
+#endif
+  return ok;
+}
+
+enum ssl_private_key_result_t ssl_private_key_decrypt(SSL_HANDSHAKE *hs,
+                                                      uint8_t *out,
+                                                      size_t *out_len,
+                                                      size_t max_out,
+                                                      Span<const uint8_t> in) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->cert->key_method != NULL) {
+    enum ssl_private_key_result_t ret;
+    if (hs->pending_private_key_op) {
+      ret = hs->config->cert->key_method->complete(ssl, out, out_len, max_out);
+    } else {
+      ret = hs->config->cert->key_method->decrypt(ssl, out, out_len, max_out,
+                                                  in.data(), in.size());
+    }
+    if (ret == ssl_private_key_failure) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PRIVATE_KEY_OPERATION_FAILED);
+    }
+    hs->pending_private_key_op = ret == ssl_private_key_retry;
+    return ret;
+  }
+
+  RSA *rsa = EVP_PKEY_get0_RSA(hs->config->cert->privatekey.get());
+  if (rsa == NULL) {
+    // Decrypt operations are only supported for RSA keys.
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  // Decrypt with no padding. PKCS#1 padding will be removed as part of the
+  // timing-sensitive code by the caller.
+  if (!RSA_decrypt(rsa, out_len, out, max_out, in.data(), in.size(),
+                   RSA_NO_PADDING)) {
+    return ssl_private_key_failure;
+  }
+  return ssl_private_key_success;
+}
+
+bool ssl_private_key_supports_signature_algorithm(SSL_HANDSHAKE *hs,
+                                                  uint16_t sigalg) {
+  SSL *const ssl = hs->ssl;
+  if (!pkey_supports_algorithm(ssl, hs->local_pubkey.get(), sigalg)) {
+    return false;
+  }
+
+  // Ensure the RSA key is large enough for the hash. RSASSA-PSS requires that
+  // emLen be at least hLen + sLen + 2. Both hLen and sLen are the size of the
+  // hash in TLS. Reasonable RSA key sizes are large enough for the largest
+  // defined RSASSA-PSS algorithm, but 1024-bit RSA is slightly too small for
+  // SHA-512. 1024-bit RSA is sometimes used for test credentials, so check the
+  // size so that we can fall back to another algorithm in that case.
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg->is_rsa_pss && (size_t)EVP_PKEY_size(hs->local_pubkey.get()) <
+                             2 * EVP_MD_size(alg->digest_func()) + 2) {
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa) {
+  if (rsa == NULL || ssl->config == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+  if (!pkey ||
+      !EVP_PKEY_set1_RSA(pkey.get(), rsa)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
+    return 0;
+  }
+
+  return ssl_set_pkey(ssl->config->cert.get(), pkey.get());
+}
+
+int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const uint8_t *der, size_t der_len) {
+  UniquePtr<RSA> rsa(RSA_private_key_from_bytes(der, der_len));
+  if (!rsa) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_use_RSAPrivateKey(ssl, rsa.get());
+}
+
+int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey) {
+  if (pkey == NULL || ssl->config == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  return ssl_set_pkey(ssl->config->cert.get(), pkey);
+}
+
+int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const uint8_t *der,
+                            size_t der_len) {
+  if (der_len > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  const uint8_t *p = der;
+  UniquePtr<EVP_PKEY> pkey(d2i_PrivateKey(type, NULL, &p, (long)der_len));
+  if (!pkey || p != der + der_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_use_PrivateKey(ssl, pkey.get());
+}
+
+int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa) {
+  if (rsa == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<EVP_PKEY> pkey(EVP_PKEY_new());
+  if (!pkey ||
+      !EVP_PKEY_set1_RSA(pkey.get(), rsa)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_EVP_LIB);
+    return 0;
+  }
+
+  return ssl_set_pkey(ctx->cert.get(), pkey.get());
+}
+
+int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const uint8_t *der,
+                                   size_t der_len) {
+  UniquePtr<RSA> rsa(RSA_private_key_from_bytes(der, der_len));
+  if (!rsa) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_CTX_use_RSAPrivateKey(ctx, rsa.get());
+}
+
+int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey) {
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  return ssl_set_pkey(ctx->cert.get(), pkey);
+}
+
+int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const uint8_t *der,
+                                size_t der_len) {
+  if (der_len > LONG_MAX) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  const uint8_t *p = der;
+  UniquePtr<EVP_PKEY> pkey(d2i_PrivateKey(type, NULL, &p, (long)der_len));
+  if (!pkey || p != der + der_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_ASN1_LIB);
+    return 0;
+  }
+
+  return SSL_CTX_use_PrivateKey(ctx, pkey.get());
+}
+
+void SSL_set_private_key_method(SSL *ssl,
+                                const SSL_PRIVATE_KEY_METHOD *key_method) {
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->cert->key_method = key_method;
+}
+
+void SSL_CTX_set_private_key_method(SSL_CTX *ctx,
+                                    const SSL_PRIVATE_KEY_METHOD *key_method) {
+  ctx->cert->key_method = key_method;
+}
+
+static constexpr size_t kMaxSignatureAlgorithmNameLen = 23;
+
+// This was "constexpr" rather than "const", but that triggered a bug in MSVC
+// where it didn't pad the strings to the correct length.
+static const struct {
+  uint16_t signature_algorithm;
+  const char name[kMaxSignatureAlgorithmNameLen];
+} kSignatureAlgorithmNames[] = {
+    {SSL_SIGN_RSA_PKCS1_MD5_SHA1, "rsa_pkcs1_md5_sha1"},
+    {SSL_SIGN_RSA_PKCS1_SHA1, "rsa_pkcs1_sha1"},
+    {SSL_SIGN_RSA_PKCS1_SHA256, "rsa_pkcs1_sha256"},
+    {SSL_SIGN_RSA_PKCS1_SHA384, "rsa_pkcs1_sha384"},
+    {SSL_SIGN_RSA_PKCS1_SHA512, "rsa_pkcs1_sha512"},
+    {SSL_SIGN_ECDSA_SHA1, "ecdsa_sha1"},
+    {SSL_SIGN_ECDSA_SECP256R1_SHA256, "ecdsa_secp256r1_sha256"},
+    {SSL_SIGN_ECDSA_SECP384R1_SHA384, "ecdsa_secp384r1_sha384"},
+    {SSL_SIGN_ECDSA_SECP521R1_SHA512, "ecdsa_secp521r1_sha512"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA256, "rsa_pss_rsae_sha256"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA384, "rsa_pss_rsae_sha384"},
+    {SSL_SIGN_RSA_PSS_RSAE_SHA512, "rsa_pss_rsae_sha512"},
+    {SSL_SIGN_ED25519, "ed25519"},
+};
+
+const char *SSL_get_signature_algorithm_name(uint16_t sigalg,
+                                             int include_curve) {
+  if (!include_curve) {
+    switch (sigalg) {
+      case SSL_SIGN_ECDSA_SECP256R1_SHA256:
+        return "ecdsa_sha256";
+      case SSL_SIGN_ECDSA_SECP384R1_SHA384:
+        return "ecdsa_sha384";
+      case SSL_SIGN_ECDSA_SECP521R1_SHA512:
+        return "ecdsa_sha512";
+    }
+  }
+
+  for (const auto &candidate : kSignatureAlgorithmNames) {
+    if (candidate.signature_algorithm == sigalg) {
+      return candidate.name;
+    }
+  }
+
+  return NULL;
+}
+
+int SSL_get_signature_algorithm_key_type(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  return alg != nullptr ? alg->pkey_type : EVP_PKEY_NONE;
+}
+
+const EVP_MD *SSL_get_signature_algorithm_digest(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  if (alg == nullptr || alg->digest_func == nullptr) {
+    return nullptr;
+  }
+  return alg->digest_func();
+}
+
+int SSL_is_signature_algorithm_rsa_pss(uint16_t sigalg) {
+  const SSL_SIGNATURE_ALGORITHM *alg = get_signature_algorithm(sigalg);
+  return alg != nullptr && alg->is_rsa_pss;
+}
+
+int SSL_CTX_set_signing_algorithm_prefs(SSL_CTX *ctx, const uint16_t *prefs,
+                                        size_t num_prefs) {
+  return ctx->cert->sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
+
+int SSL_set_signing_algorithm_prefs(SSL *ssl, const uint16_t *prefs,
+                                    size_t num_prefs) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->cert->sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
+
+static constexpr struct {
+  int pkey_type;
+  int hash_nid;
+  uint16_t signature_algorithm;
+} kSignatureAlgorithmsMapping[] = {
+    {EVP_PKEY_RSA, NID_sha1, SSL_SIGN_RSA_PKCS1_SHA1},
+    {EVP_PKEY_RSA, NID_sha256, SSL_SIGN_RSA_PKCS1_SHA256},
+    {EVP_PKEY_RSA, NID_sha384, SSL_SIGN_RSA_PKCS1_SHA384},
+    {EVP_PKEY_RSA, NID_sha512, SSL_SIGN_RSA_PKCS1_SHA512},
+    {EVP_PKEY_RSA_PSS, NID_sha256, SSL_SIGN_RSA_PSS_RSAE_SHA256},
+    {EVP_PKEY_RSA_PSS, NID_sha384, SSL_SIGN_RSA_PSS_RSAE_SHA384},
+    {EVP_PKEY_RSA_PSS, NID_sha512, SSL_SIGN_RSA_PSS_RSAE_SHA512},
+    {EVP_PKEY_EC, NID_sha1, SSL_SIGN_ECDSA_SHA1},
+    {EVP_PKEY_EC, NID_sha256, SSL_SIGN_ECDSA_SECP256R1_SHA256},
+    {EVP_PKEY_EC, NID_sha384, SSL_SIGN_ECDSA_SECP384R1_SHA384},
+    {EVP_PKEY_EC, NID_sha512, SSL_SIGN_ECDSA_SECP521R1_SHA512},
+    {EVP_PKEY_ED25519, NID_undef, SSL_SIGN_ED25519},
+};
+
+static bool parse_sigalg_pairs(Array<uint16_t> *out, const int *values,
+                               size_t num_values) {
+  if ((num_values & 1) == 1) {
+    return false;
+  }
+
+  const size_t num_pairs = num_values / 2;
+  if (!out->Init(num_pairs)) {
+    return false;
+  }
+
+  for (size_t i = 0; i < num_values; i += 2) {
+    const int hash_nid = values[i];
+    const int pkey_type = values[i+1];
+
+    bool found = false;
+    for (const auto &candidate : kSignatureAlgorithmsMapping) {
+      if (candidate.pkey_type == pkey_type && candidate.hash_nid == hash_nid) {
+        (*out)[i / 2] = candidate.signature_algorithm;
+        found = true;
+        break;
+      }
+    }
+
+    if (!found) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+      ERR_add_error_dataf("unknown hash:%d pkey:%d", hash_nid, pkey_type);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static int compare_uint16_t(const void *p1, const void *p2) {
+  uint16_t u1 = *((const uint16_t *)p1);
+  uint16_t u2 = *((const uint16_t *)p2);
+  if (u1 < u2) {
+    return -1;
+  } else if (u1 > u2) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+static bool sigalgs_unique(Span<const uint16_t> in_sigalgs) {
+  if (in_sigalgs.size() < 2) {
+    return true;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!sigalgs.CopyFrom(in_sigalgs)) {
+    return false;
+  }
+
+  qsort(sigalgs.data(), sigalgs.size(), sizeof(uint16_t), compare_uint16_t);
+
+  for (size_t i = 1; i < sigalgs.size(); i++) {
+    if (sigalgs[i - 1] == sigalgs[i]) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_SIGNATURE_ALGORITHM);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+int SSL_CTX_set1_sigalgs(SSL_CTX *ctx, const int *values, size_t num_values) {
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalg_pairs(&sigalgs, values, num_values) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_CTX_set_signing_algorithm_prefs(ctx, sigalgs.data(),
+                                           sigalgs.size()) ||
+      !ctx->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_set1_sigalgs(SSL *ssl, const int *values, size_t num_values) {
+  if (!ssl->config) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalg_pairs(&sigalgs, values, num_values) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_set_signing_algorithm_prefs(ssl, sigalgs.data(), sigalgs.size()) ||
+      !ssl->config->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static bool parse_sigalgs_list(Array<uint16_t> *out, const char *str) {
+  // str looks like "RSA+SHA1:ECDSA+SHA256:ecdsa_secp256r1_sha256".
+
+  // Count colons to give the number of output elements from any successful
+  // parse.
+  size_t num_elements = 1;
+  size_t len = 0;
+  for (const char *p = str; *p; p++) {
+    len++;
+    if (*p == ':') {
+      num_elements++;
+    }
+  }
+
+  if (!out->Init(num_elements)) {
+    return false;
+  }
+  size_t out_i = 0;
+
+  enum {
+    pkey_or_name,
+    hash_name,
+  } state = pkey_or_name;
+
+  char buf[kMaxSignatureAlgorithmNameLen];
+  // buf_used is always < sizeof(buf). I.e. it's always safe to write
+  // buf[buf_used] = 0.
+  size_t buf_used = 0;
+
+  int pkey_type = 0, hash_nid = 0;
+
+  // Note that the loop runs to len+1, i.e. it'll process the terminating NUL.
+  for (size_t offset = 0; offset < len+1; offset++) {
+    const char c = str[offset];
+
+    switch (c) {
+      case '+':
+        if (state == hash_name) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("+ found in hash name at offset %zu", offset);
+          return false;
+        }
+        if (buf_used == 0) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("empty public key type at offset %zu", offset);
+          return false;
+        }
+        buf[buf_used] = 0;
+
+        if (strcmp(buf, "RSA") == 0) {
+          pkey_type = EVP_PKEY_RSA;
+        } else if (strcmp(buf, "RSA-PSS") == 0 ||
+                   strcmp(buf, "PSS") == 0) {
+          pkey_type = EVP_PKEY_RSA_PSS;
+        } else if (strcmp(buf, "ECDSA") == 0) {
+          pkey_type = EVP_PKEY_EC;
+        } else {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("unknown public key type '%s'", buf);
+          return false;
+        }
+
+        state = hash_name;
+        buf_used = 0;
+        break;
+
+      case ':':
+        OPENSSL_FALLTHROUGH;
+      case 0:
+        if (buf_used == 0) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("empty element at offset %zu", offset);
+          return false;
+        }
+
+        buf[buf_used] = 0;
+
+        if (state == pkey_or_name) {
+          // No '+' was seen thus this is a TLS 1.3-style name.
+          bool found = false;
+          for (const auto &candidate : kSignatureAlgorithmNames) {
+            if (strcmp(candidate.name, buf) == 0) {
+              assert(out_i < num_elements);
+              (*out)[out_i++] = candidate.signature_algorithm;
+              found = true;
+              break;
+            }
+          }
+
+          if (!found) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown signature algorithm '%s'", buf);
+            return false;
+          }
+        } else {
+          if (strcmp(buf, "SHA1") == 0) {
+            hash_nid = NID_sha1;
+          } else if (strcmp(buf, "SHA256") == 0) {
+            hash_nid = NID_sha256;
+          } else if (strcmp(buf, "SHA384") == 0) {
+            hash_nid = NID_sha384;
+          } else if (strcmp(buf, "SHA512") == 0) {
+            hash_nid = NID_sha512;
+          } else {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown hash function '%s'", buf);
+            return false;
+          }
+
+          bool found = false;
+          for (const auto &candidate : kSignatureAlgorithmsMapping) {
+            if (candidate.pkey_type == pkey_type &&
+                candidate.hash_nid == hash_nid) {
+              assert(out_i < num_elements);
+              (*out)[out_i++] = candidate.signature_algorithm;
+              found = true;
+              break;
+            }
+          }
+
+          if (!found) {
+            OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+            ERR_add_error_dataf("unknown pkey:%d hash:%s", pkey_type, buf);
+            return false;
+          }
+        }
+
+        state = pkey_or_name;
+        buf_used = 0;
+        break;
+
+      default:
+        if (buf_used == sizeof(buf) - 1) {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("substring too long at offset %zu", offset);
+          return false;
+        }
+
+        if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') ||
+            (c >= 'A' && c <= 'Z') || c == '-' || c == '_') {
+          buf[buf_used++] = c;
+        } else {
+          OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_SIGNATURE_ALGORITHM);
+          ERR_add_error_dataf("invalid character 0x%02x at offest %zu", c,
+                              offset);
+          return false;
+        }
+    }
+  }
+
+  assert(out_i == out->size());
+  return true;
+}
+
+int SSL_CTX_set1_sigalgs_list(SSL_CTX *ctx, const char *str) {
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalgs_list(&sigalgs, str) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_CTX_set_signing_algorithm_prefs(ctx, sigalgs.data(),
+                                           sigalgs.size()) ||
+      !ctx->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_set1_sigalgs_list(SSL *ssl, const char *str) {
+  if (!ssl->config) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
+
+  Array<uint16_t> sigalgs;
+  if (!parse_sigalgs_list(&sigalgs, str) ||
+      !sigalgs_unique(sigalgs)) {
+    return 0;
+  }
+
+  if (!SSL_set_signing_algorithm_prefs(ssl, sigalgs.data(), sigalgs.size()) ||
+      !ssl->config->verify_sigalgs.CopyFrom(sigalgs)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_CTX_set_verify_algorithm_prefs(SSL_CTX *ctx, const uint16_t *prefs,
+                                       size_t num_prefs) {
+  return ctx->verify_sigalgs.CopyFrom(MakeConstSpan(prefs, num_prefs));
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc
new file mode 100644
index 0000000..eb77327
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc	
@@ -0,0 +1,1274 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/lhash.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// The address of this is a magic value, a pointer to which is returned by
+// SSL_magic_pending_session_ptr(). It allows a session callback to indicate
+// that it needs to asynchronously fetch session information.
+static const char g_pending_session_magic = 0;
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session);
+static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session);
+static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock);
+
+UniquePtr<SSL_SESSION> ssl_session_new(const SSL_X509_METHOD *x509_method) {
+  return MakeUnique<SSL_SESSION>(x509_method);
+}
+
+uint32_t ssl_hash_session_id(Span<const uint8_t> session_id) {
+  // Take the first four bytes of |session_id|. Session IDs are generated by the
+  // server randomly, so we can assume even using the first four bytes results
+  // in a good distribution.
+  uint8_t tmp_storage[sizeof(uint32_t)];
+  if (session_id.size() < sizeof(tmp_storage)) {
+    OPENSSL_memset(tmp_storage, 0, sizeof(tmp_storage));
+    OPENSSL_memcpy(tmp_storage, session_id.data(), session_id.size());
+    session_id = tmp_storage;
+  }
+
+  uint32_t hash =
+      ((uint32_t)session_id[0]) |
+      ((uint32_t)session_id[1] << 8) |
+      ((uint32_t)session_id[2] << 16) |
+      ((uint32_t)session_id[3] << 24);
+
+  return hash;
+}
+
+UniquePtr<SSL_SESSION> SSL_SESSION_dup(SSL_SESSION *session, int dup_flags) {
+  UniquePtr<SSL_SESSION> new_session = ssl_session_new(session->x509_method);
+  if (!new_session) {
+    return nullptr;
+  }
+
+  new_session->is_server = session->is_server;
+  new_session->ssl_version = session->ssl_version;
+  new_session->sid_ctx_length = session->sid_ctx_length;
+  OPENSSL_memcpy(new_session->sid_ctx, session->sid_ctx, session->sid_ctx_length);
+
+  // Copy the key material.
+  new_session->master_key_length = session->master_key_length;
+  OPENSSL_memcpy(new_session->master_key, session->master_key,
+         session->master_key_length);
+  new_session->cipher = session->cipher;
+
+  // Copy authentication state.
+  if (session->psk_identity != nullptr) {
+    new_session->psk_identity.reset(
+        OPENSSL_strdup(session->psk_identity.get()));
+    if (new_session->psk_identity == nullptr) {
+      return nullptr;
+    }
+  }
+  if (session->certs != nullptr) {
+    auto buf_up_ref = [](CRYPTO_BUFFER *buf) {
+      CRYPTO_BUFFER_up_ref(buf);
+      return buf;
+    };
+    new_session->certs.reset(sk_CRYPTO_BUFFER_deep_copy(
+        session->certs.get(), buf_up_ref, CRYPTO_BUFFER_free));
+    if (new_session->certs == nullptr) {
+      return nullptr;
+    }
+  }
+
+  if (!session->x509_method->session_dup(new_session.get(), session)) {
+    return nullptr;
+  }
+
+  new_session->verify_result = session->verify_result;
+
+  new_session->ocsp_response = UpRef(session->ocsp_response);
+  new_session->signed_cert_timestamp_list =
+      UpRef(session->signed_cert_timestamp_list);
+
+  OPENSSL_memcpy(new_session->peer_sha256, session->peer_sha256,
+                 SHA256_DIGEST_LENGTH);
+  new_session->peer_sha256_valid = session->peer_sha256_valid;
+
+  new_session->peer_signature_algorithm = session->peer_signature_algorithm;
+
+  new_session->timeout = session->timeout;
+  new_session->auth_timeout = session->auth_timeout;
+  new_session->time = session->time;
+
+  // Copy non-authentication connection properties.
+  if (dup_flags & SSL_SESSION_INCLUDE_NONAUTH) {
+    new_session->session_id_length = session->session_id_length;
+    OPENSSL_memcpy(new_session->session_id, session->session_id,
+                   session->session_id_length);
+
+    new_session->group_id = session->group_id;
+
+    OPENSSL_memcpy(new_session->original_handshake_hash,
+                   session->original_handshake_hash,
+                   session->original_handshake_hash_len);
+    new_session->original_handshake_hash_len =
+        session->original_handshake_hash_len;
+    new_session->ticket_lifetime_hint = session->ticket_lifetime_hint;
+    new_session->ticket_age_add = session->ticket_age_add;
+    new_session->ticket_max_early_data = session->ticket_max_early_data;
+    new_session->extended_master_secret = session->extended_master_secret;
+
+    if (!new_session->early_alpn.CopyFrom(session->early_alpn)) {
+      return nullptr;
+    }
+  }
+
+  // Copy the ticket.
+  if (dup_flags & SSL_SESSION_INCLUDE_TICKET &&
+      !new_session->ticket.CopyFrom(session->ticket)) {
+    return nullptr;
+  }
+
+  // The new_session does not get a copy of the ex_data.
+
+  new_session->not_resumable = true;
+  return new_session;
+}
+
+void ssl_session_rebase_time(SSL *ssl, SSL_SESSION *session) {
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // To avoid overflows and underflows, if we've gone back in time, update the
+  // time, but mark the session expired.
+  if (session->time > now.tv_sec) {
+    session->time = now.tv_sec;
+    session->timeout = 0;
+    session->auth_timeout = 0;
+    return;
+  }
+
+  // Adjust the session time and timeouts. If the session has already expired,
+  // clamp the timeouts at zero.
+  uint64_t delta = now.tv_sec - session->time;
+  session->time = now.tv_sec;
+  if (session->timeout < delta) {
+    session->timeout = 0;
+  } else {
+    session->timeout -= delta;
+  }
+  if (session->auth_timeout < delta) {
+    session->auth_timeout = 0;
+  } else {
+    session->auth_timeout -= delta;
+  }
+}
+
+void ssl_session_renew_timeout(SSL *ssl, SSL_SESSION *session,
+                               uint32_t timeout) {
+  // Rebase the timestamp relative to the current time so |timeout| is measured
+  // correctly.
+  ssl_session_rebase_time(ssl, session);
+
+  if (session->timeout > timeout) {
+    return;
+  }
+
+  session->timeout = timeout;
+  if (session->timeout > session->auth_timeout) {
+    session->timeout = session->auth_timeout;
+  }
+}
+
+uint16_t ssl_session_protocol_version(const SSL_SESSION *session) {
+  uint16_t ret;
+  if (!ssl_protocol_version_from_wire(&ret, session->ssl_version)) {
+    // An |SSL_SESSION| will never have an invalid version. This is enforced by
+    // the parser.
+    assert(0);
+    return 0;
+  }
+
+  return ret;
+}
+
+const EVP_MD *ssl_session_get_digest(const SSL_SESSION *session) {
+  return ssl_get_handshake_digest(ssl_session_protocol_version(session),
+                                  session->cipher);
+}
+
+int ssl_get_new_session(SSL_HANDSHAKE *hs, int is_server) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->mode & SSL_MODE_NO_SESSION_CREATION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SESSION_MAY_NOT_BE_CREATED);
+    return 0;
+  }
+
+  UniquePtr<SSL_SESSION> session = ssl_session_new(ssl->ctx->x509_method);
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->is_server = is_server;
+  session->ssl_version = ssl->version;
+
+  // Fill in the time from the |SSL_CTX|'s clock.
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  session->time = now.tv_sec;
+
+  uint16_t version = ssl_protocol_version(ssl);
+  if (version >= TLS1_3_VERSION) {
+    // TLS 1.3 uses tickets as authenticators, so we are willing to use them for
+    // longer.
+    session->timeout = ssl->session_ctx->session_psk_dhe_timeout;
+    session->auth_timeout = SSL_DEFAULT_SESSION_AUTH_TIMEOUT;
+  } else {
+    // TLS 1.2 resumption does not incorporate new key material, so we use a
+    // much shorter timeout.
+    session->timeout = ssl->session_ctx->session_timeout;
+    session->auth_timeout = ssl->session_ctx->session_timeout;
+  }
+
+  if (is_server) {
+    if (hs->ticket_expected || version >= TLS1_3_VERSION) {
+      // Don't set session IDs for sessions resumed with tickets. This will keep
+      // them out of the session cache.
+      session->session_id_length = 0;
+    } else {
+      session->session_id_length = SSL3_SSL_SESSION_ID_LENGTH;
+      if (!RAND_bytes(session->session_id, session->session_id_length)) {
+        return 0;
+      }
+    }
+  } else {
+    session->session_id_length = 0;
+  }
+
+  if (hs->config->cert->sid_ctx_length > sizeof(session->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  OPENSSL_memcpy(session->sid_ctx, hs->config->cert->sid_ctx,
+                 hs->config->cert->sid_ctx_length);
+  session->sid_ctx_length = hs->config->cert->sid_ctx_length;
+
+  // The session is marked not resumable until it is completely filled in.
+  session->not_resumable = true;
+  session->verify_result = X509_V_ERR_INVALID_CALL;
+
+  hs->new_session = std::move(session);
+  ssl_set_session(ssl, NULL);
+  return 1;
+}
+
+int ssl_ctx_rotate_ticket_encryption_key(SSL_CTX *ctx) {
+  OPENSSL_timeval now;
+  ssl_ctx_get_current_time(ctx, &now);
+  {
+    // Avoid acquiring a write lock in the common case (i.e. a non-default key
+    // is used or the default keys have not expired yet).
+    MutexReadLock lock(&ctx->lock);
+    if (ctx->ticket_key_current &&
+        (ctx->ticket_key_current->next_rotation_tv_sec == 0 ||
+         ctx->ticket_key_current->next_rotation_tv_sec > now.tv_sec) &&
+        (!ctx->ticket_key_prev ||
+         ctx->ticket_key_prev->next_rotation_tv_sec > now.tv_sec)) {
+      return 1;
+    }
+  }
+
+  MutexWriteLock lock(&ctx->lock);
+  if (!ctx->ticket_key_current ||
+      (ctx->ticket_key_current->next_rotation_tv_sec != 0 &&
+       ctx->ticket_key_current->next_rotation_tv_sec <= now.tv_sec)) {
+    // The current key has not been initialized or it is expired.
+    auto new_key = bssl::MakeUnique<TicketKey>();
+    if (!new_key) {
+      return 0;
+    }
+    RAND_bytes(new_key->name, 16);
+    RAND_bytes(new_key->hmac_key, 16);
+    RAND_bytes(new_key->aes_key, 16);
+    new_key->next_rotation_tv_sec =
+        now.tv_sec + SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL;
+    if (ctx->ticket_key_current) {
+      // The current key expired. Rotate it to prev and bump up its rotation
+      // timestamp. Note that even with the new rotation time it may still be
+      // expired and get dropped below.
+      ctx->ticket_key_current->next_rotation_tv_sec +=
+          SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL;
+      ctx->ticket_key_prev = std::move(ctx->ticket_key_current);
+    }
+    ctx->ticket_key_current = std::move(new_key);
+  }
+
+  // Drop an expired prev key.
+  if (ctx->ticket_key_prev &&
+      ctx->ticket_key_prev->next_rotation_tv_sec <= now.tv_sec) {
+    ctx->ticket_key_prev.reset();
+  }
+
+  return 1;
+}
+
+static int ssl_encrypt_ticket_with_cipher_ctx(SSL_HANDSHAKE *hs, CBB *out,
+                                              const uint8_t *session_buf,
+                                              size_t session_len) {
+  ScopedEVP_CIPHER_CTX ctx;
+  ScopedHMAC_CTX hctx;
+
+  // If the session is too long, emit a dummy value rather than abort the
+  // connection.
+  static const size_t kMaxTicketOverhead =
+      16 + EVP_MAX_IV_LENGTH + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE;
+  if (session_len > 0xffff - kMaxTicketOverhead) {
+    static const char kTicketPlaceholder[] = "TICKET TOO LARGE";
+    return CBB_add_bytes(out, (const uint8_t *)kTicketPlaceholder,
+                         strlen(kTicketPlaceholder));
+  }
+
+  // Initialize HMAC and cipher contexts. If callback present it does all the
+  // work otherwise use generated values from parent ctx.
+  SSL_CTX *tctx = hs->ssl->session_ctx.get();
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  uint8_t key_name[16];
+  if (tctx->ticket_key_cb != NULL) {
+    if (tctx->ticket_key_cb(hs->ssl, key_name, iv, ctx.get(), hctx.get(),
+                            1 /* encrypt */) < 0) {
+      return 0;
+    }
+  } else {
+    // Rotate ticket key if necessary.
+    if (!ssl_ctx_rotate_ticket_encryption_key(tctx)) {
+      return 0;
+    }
+    MutexReadLock lock(&tctx->lock);
+    if (!RAND_bytes(iv, 16) ||
+        !EVP_EncryptInit_ex(ctx.get(), EVP_aes_128_cbc(), NULL,
+                            tctx->ticket_key_current->aes_key, iv) ||
+        !HMAC_Init_ex(hctx.get(), tctx->ticket_key_current->hmac_key, 16,
+                      tlsext_tick_md(), NULL)) {
+      return 0;
+    }
+    OPENSSL_memcpy(key_name, tctx->ticket_key_current->name, 16);
+  }
+
+  uint8_t *ptr;
+  if (!CBB_add_bytes(out, key_name, 16) ||
+      !CBB_add_bytes(out, iv, EVP_CIPHER_CTX_iv_length(ctx.get())) ||
+      !CBB_reserve(out, &ptr, session_len + EVP_MAX_BLOCK_LENGTH)) {
+    return 0;
+  }
+
+  size_t total = 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  OPENSSL_memcpy(ptr, session_buf, session_len);
+  total = session_len;
+#else
+  int len;
+  if (!EVP_EncryptUpdate(ctx.get(), ptr + total, &len, session_buf, session_len)) {
+    return 0;
+  }
+  total += len;
+  if (!EVP_EncryptFinal_ex(ctx.get(), ptr + total, &len)) {
+    return 0;
+  }
+  total += len;
+#endif
+  if (!CBB_did_write(out, total)) {
+    return 0;
+  }
+
+  unsigned hlen;
+  if (!HMAC_Update(hctx.get(), CBB_data(out), CBB_len(out)) ||
+      !CBB_reserve(out, &ptr, EVP_MAX_MD_SIZE) ||
+      !HMAC_Final(hctx.get(), ptr, &hlen) ||
+      !CBB_did_write(out, hlen)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ssl_encrypt_ticket_with_method(SSL_HANDSHAKE *hs, CBB *out,
+                                          const uint8_t *session_buf,
+                                          size_t session_len) {
+  SSL *const ssl = hs->ssl;
+  const SSL_TICKET_AEAD_METHOD *method = ssl->session_ctx->ticket_aead_method;
+  const size_t max_overhead = method->max_overhead(ssl);
+  const size_t max_out = session_len + max_overhead;
+  if (max_out < max_overhead) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  uint8_t *ptr;
+  if (!CBB_reserve(out, &ptr, max_out)) {
+    return 0;
+  }
+
+  size_t out_len;
+  if (!method->seal(ssl, ptr, &out_len, max_out, session_buf,
+                    session_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_TICKET_ENCRYPTION_FAILED);
+    return 0;
+  }
+
+  if (!CBB_did_write(out, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int ssl_encrypt_ticket(SSL_HANDSHAKE *hs, CBB *out,
+                       const SSL_SESSION *session) {
+  // Serialize the SSL_SESSION to be encoded into the ticket.
+  uint8_t *session_buf = NULL;
+  size_t session_len;
+  if (!SSL_SESSION_to_bytes_for_ticket(session, &session_buf, &session_len)) {
+    return -1;
+  }
+
+  int ret = 0;
+  if (hs->ssl->session_ctx->ticket_aead_method) {
+    ret = ssl_encrypt_ticket_with_method(hs, out, session_buf, session_len);
+  } else {
+    ret = ssl_encrypt_ticket_with_cipher_ctx(hs, out, session_buf, session_len);
+  }
+
+  OPENSSL_free(session_buf);
+  return ret;
+}
+
+int ssl_session_is_context_valid(const SSL_HANDSHAKE *hs,
+                                 const SSL_SESSION *session) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->sid_ctx_length == hs->config->cert->sid_ctx_length &&
+         OPENSSL_memcmp(session->sid_ctx, hs->config->cert->sid_ctx,
+                        hs->config->cert->sid_ctx_length) == 0;
+}
+
+int ssl_session_is_time_valid(const SSL *ssl, const SSL_SESSION *session) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // Reject tickets from the future to avoid underflow.
+  if (now.tv_sec < session->time) {
+    return 0;
+  }
+
+  return session->timeout > now.tv_sec - session->time;
+}
+
+int ssl_session_is_resumable(const SSL_HANDSHAKE *hs,
+                             const SSL_SESSION *session) {
+  const SSL *const ssl = hs->ssl;
+  return ssl_session_is_context_valid(hs, session) &&
+         // The session must have been created by the same type of end point as
+         // we're now using it with.
+         ssl->server == session->is_server &&
+         // The session must not be expired.
+         ssl_session_is_time_valid(ssl, session) &&
+         /* Only resume if the session's version matches the negotiated
+          * version. */
+         ssl->version == session->ssl_version &&
+         // Only resume if the session's cipher matches the negotiated one.
+         hs->new_cipher == session->cipher &&
+         // If the session contains a client certificate (either the full
+         // certificate or just the hash) then require that the form of the
+         // certificate matches the current configuration.
+         ((sk_CRYPTO_BUFFER_num(session->certs.get()) == 0 &&
+           !session->peer_sha256_valid) ||
+          session->peer_sha256_valid ==
+              hs->config->retain_only_sha256_of_client_certs);
+}
+
+// ssl_lookup_session looks up |session_id| in the session cache and sets
+// |*out_session| to an |SSL_SESSION| object if found.
+static enum ssl_hs_wait_t ssl_lookup_session(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    Span<const uint8_t> session_id) {
+  SSL *const ssl = hs->ssl;
+  out_session->reset();
+
+  if (session_id.empty() || session_id.size() > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return ssl_hs_ok;
+  }
+
+  UniquePtr<SSL_SESSION> session;
+  // Try the internal cache, if it exists.
+  if (!(ssl->session_ctx->session_cache_mode &
+        SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) {
+    uint32_t hash = ssl_hash_session_id(session_id);
+    auto cmp = [](const void *key, const SSL_SESSION *sess) -> int {
+      Span<const uint8_t> key_id =
+          *reinterpret_cast<const Span<const uint8_t> *>(key);
+      Span<const uint8_t> sess_id =
+          MakeConstSpan(sess->session_id, sess->session_id_length);
+      return key_id == sess_id ? 0 : 1;
+    };
+    MutexReadLock lock(&ssl->session_ctx->lock);
+    // |lh_SSL_SESSION_retrieve_key| returns a non-owning pointer.
+    session = UpRef(lh_SSL_SESSION_retrieve_key(ssl->session_ctx->sessions,
+                                                &session_id, hash, cmp));
+    // TODO(davidben): This should probably move it to the front of the list.
+  }
+
+  // Fall back to the external cache, if it exists.
+  if (!session && ssl->session_ctx->get_session_cb != nullptr) {
+    int copy = 1;
+    session.reset(ssl->session_ctx->get_session_cb(ssl, session_id.data(),
+                                                   session_id.size(), &copy));
+    if (!session) {
+      return ssl_hs_ok;
+    }
+
+    if (session.get() == SSL_magic_pending_session_ptr()) {
+      session.release();  // This pointer is not actually owned.
+      return ssl_hs_pending_session;
+    }
+
+    // Increment reference count now if the session callback asks us to do so
+    // (note that if the session structures returned by the callback are shared
+    // between threads, it must handle the reference count itself [i.e. copy ==
+    // 0], or things won't be thread-safe).
+    if (copy) {
+      SSL_SESSION_up_ref(session.get());
+    }
+
+    // Add the externally cached session to the internal cache if necessary.
+    if (!(ssl->session_ctx->session_cache_mode &
+          SSL_SESS_CACHE_NO_INTERNAL_STORE)) {
+      SSL_CTX_add_session(ssl->session_ctx.get(), session.get());
+    }
+  }
+
+  if (session && !ssl_session_is_time_valid(ssl, session.get())) {
+    // The session was from the cache, so remove it.
+    SSL_CTX_remove_session(ssl->session_ctx.get(), session.get());
+    session.reset();
+  }
+
+  *out_session = std::move(session);
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_get_prev_session(SSL_HANDSHAKE *hs,
+                                        UniquePtr<SSL_SESSION> *out_session,
+                                        bool *out_tickets_supported,
+                                        bool *out_renew_ticket,
+                                        const SSL_CLIENT_HELLO *client_hello) {
+  // This is used only by servers.
+  assert(hs->ssl->server);
+  UniquePtr<SSL_SESSION> session;
+  bool renew_ticket = false;
+
+  // If tickets are disabled, always behave as if no tickets are present.
+  CBS ticket;
+  const bool tickets_supported =
+      !(SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) &&
+      ssl_client_hello_get_extension(client_hello, &ticket,
+                                     TLSEXT_TYPE_session_ticket);
+  if (tickets_supported && CBS_len(&ticket) != 0) {
+    switch (ssl_process_ticket(hs, &session, &renew_ticket, ticket,
+                               MakeConstSpan(client_hello->session_id,
+                                             client_hello->session_id_len))) {
+      case ssl_ticket_aead_success:
+        break;
+      case ssl_ticket_aead_ignore_ticket:
+        assert(!session);
+        break;
+      case ssl_ticket_aead_error:
+        return ssl_hs_error;
+      case ssl_ticket_aead_retry:
+        return ssl_hs_pending_ticket;
+    }
+  } else {
+    // The client didn't send a ticket, so the session ID is a real ID.
+    enum ssl_hs_wait_t lookup_ret = ssl_lookup_session(
+        hs, &session,
+        MakeConstSpan(client_hello->session_id, client_hello->session_id_len));
+    if (lookup_ret != ssl_hs_ok) {
+      return lookup_ret;
+    }
+  }
+
+  *out_session = std::move(session);
+  *out_tickets_supported = tickets_supported;
+  *out_renew_ticket = renew_ticket;
+  return ssl_hs_ok;
+}
+
+static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock) {
+  int ret = 0;
+
+  if (session != NULL && session->session_id_length != 0) {
+    if (lock) {
+      CRYPTO_MUTEX_lock_write(&ctx->lock);
+    }
+    SSL_SESSION *found_session = lh_SSL_SESSION_retrieve(ctx->sessions,
+                                                         session);
+    if (found_session == session) {
+      ret = 1;
+      found_session = lh_SSL_SESSION_delete(ctx->sessions, session);
+      SSL_SESSION_list_remove(ctx, session);
+    }
+
+    if (lock) {
+      CRYPTO_MUTEX_unlock_write(&ctx->lock);
+    }
+
+    if (ret) {
+      if (ctx->remove_session_cb != NULL) {
+        ctx->remove_session_cb(ctx, found_session);
+      }
+      SSL_SESSION_free(found_session);
+    }
+  }
+
+  return ret;
+}
+
+void ssl_set_session(SSL *ssl, SSL_SESSION *session) {
+  if (ssl->session.get() == session) {
+    return;
+  }
+
+  ssl->session = UpRef(session);
+}
+
+// locked by SSL_CTX in the calling function
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session) {
+  if (session->next == NULL || session->prev == NULL) {
+    return;
+  }
+
+  if (session->next == (SSL_SESSION *)&ctx->session_cache_tail) {
+    // last element in list
+    if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) {
+      // only one element in list
+      ctx->session_cache_head = NULL;
+      ctx->session_cache_tail = NULL;
+    } else {
+      ctx->session_cache_tail = session->prev;
+      session->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail);
+    }
+  } else {
+    if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) {
+      // first element in list
+      ctx->session_cache_head = session->next;
+      session->next->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    } else {  // middle of list
+      session->next->prev = session->prev;
+      session->prev->next = session->next;
+    }
+  }
+  session->prev = session->next = NULL;
+}
+
+static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session) {
+  if (session->next != NULL && session->prev != NULL) {
+    SSL_SESSION_list_remove(ctx, session);
+  }
+
+  if (ctx->session_cache_head == NULL) {
+    ctx->session_cache_head = session;
+    ctx->session_cache_tail = session;
+    session->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    session->next = (SSL_SESSION *)&(ctx->session_cache_tail);
+  } else {
+    session->next = ctx->session_cache_head;
+    session->next->prev = session;
+    session->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    ctx->session_cache_head = session;
+  }
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+ssl_session_st::ssl_session_st(const SSL_X509_METHOD *method)
+    : x509_method(method),
+      extended_master_secret(false),
+      peer_sha256_valid(false),
+      not_resumable(false),
+      ticket_age_add_valid(false),
+      is_server(false) {
+  CRYPTO_new_ex_data(&ex_data);
+  time = ::time(nullptr);
+}
+
+ssl_session_st::~ssl_session_st() {
+  CRYPTO_free_ex_data(&g_ex_data_class, this, &ex_data);
+  x509_method->session_clear(this);
+}
+
+SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx) {
+  return ssl_session_new(ctx->x509_method).release();
+}
+
+int SSL_SESSION_up_ref(SSL_SESSION *session) {
+  CRYPTO_refcount_inc(&session->references);
+  return 1;
+}
+
+void SSL_SESSION_free(SSL_SESSION *session) {
+  if (session == NULL ||
+      !CRYPTO_refcount_dec_and_test_zero(&session->references)) {
+    return;
+  }
+
+  session->~ssl_session_st();
+  OPENSSL_free(session);
+}
+
+const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session,
+                                  unsigned *out_len) {
+  if (out_len != NULL) {
+    *out_len = session->session_id_length;
+  }
+  return session->session_id;
+}
+
+int SSL_SESSION_set1_id(SSL_SESSION *session, const uint8_t *sid,
+                        size_t sid_len) {
+  if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_TOO_LONG);
+    return 0;
+  }
+
+  // Use memmove in case someone passes in the output of |SSL_SESSION_get_id|.
+  OPENSSL_memmove(session->session_id, sid, sid_len);
+  session->session_id_length = sid_len;
+  return 1;
+}
+
+uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session) {
+  return session->timeout;
+}
+
+uint64_t SSL_SESSION_get_time(const SSL_SESSION *session) {
+  if (session == NULL) {
+    // NULL should crash, but silently accept it here for compatibility.
+    return 0;
+  }
+  return session->time;
+}
+
+X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session) {
+  return session->x509_peer;
+}
+
+const STACK_OF(CRYPTO_BUFFER) *
+    SSL_SESSION_get0_peer_certificates(const SSL_SESSION *session) {
+  return session->certs.get();
+}
+
+void SSL_SESSION_get0_signed_cert_timestamp_list(const SSL_SESSION *session,
+                                                 const uint8_t **out,
+                                                 size_t *out_len) {
+  if (session->signed_cert_timestamp_list) {
+    *out = CRYPTO_BUFFER_data(session->signed_cert_timestamp_list.get());
+    *out_len = CRYPTO_BUFFER_len(session->signed_cert_timestamp_list.get());
+  } else {
+    *out = nullptr;
+    *out_len = 0;
+  }
+}
+
+void SSL_SESSION_get0_ocsp_response(const SSL_SESSION *session,
+                                    const uint8_t **out, size_t *out_len) {
+  if (session->ocsp_response) {
+    *out = CRYPTO_BUFFER_data(session->ocsp_response.get());
+    *out_len = CRYPTO_BUFFER_len(session->ocsp_response.get());
+  } else {
+    *out = nullptr;
+    *out_len = 0;
+  }
+}
+
+size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, uint8_t *out,
+                                  size_t max_out) {
+  // TODO(davidben): Fix master_key_length's type and remove these casts.
+  if (max_out == 0) {
+    return (size_t)session->master_key_length;
+  }
+  if (max_out > (size_t)session->master_key_length) {
+    max_out = (size_t)session->master_key_length;
+  }
+  OPENSSL_memcpy(out, session->master_key, max_out);
+  return max_out;
+}
+
+uint64_t SSL_SESSION_set_time(SSL_SESSION *session, uint64_t time) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->time = time;
+  return time;
+}
+
+uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session, uint32_t timeout) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->timeout = timeout;
+  session->auth_timeout = timeout;
+  return 1;
+}
+
+const uint8_t *SSL_SESSION_get0_id_context(const SSL_SESSION *session,
+                                           unsigned *out_len) {
+  if (out_len != NULL) {
+    *out_len = session->sid_ctx_length;
+  }
+  return session->sid_ctx;
+}
+
+int SSL_SESSION_set1_id_context(SSL_SESSION *session, const uint8_t *sid_ctx,
+                                size_t sid_ctx_len) {
+  if (sid_ctx_len > sizeof(session->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+    return 0;
+  }
+
+  static_assert(sizeof(session->sid_ctx) < 256, "sid_ctx_len does not fit");
+  session->sid_ctx_length = (uint8_t)sid_ctx_len;
+  OPENSSL_memcpy(session->sid_ctx, sid_ctx, sid_ctx_len);
+
+  return 1;
+}
+
+int SSL_SESSION_should_be_single_use(const SSL_SESSION *session) {
+  return ssl_session_protocol_version(session) >= TLS1_3_VERSION;
+}
+
+int SSL_SESSION_is_resumable(const SSL_SESSION *session) {
+  return !session->not_resumable;
+}
+
+int SSL_SESSION_has_ticket(const SSL_SESSION *session) {
+  return !session->ticket.empty();
+}
+
+void SSL_SESSION_get0_ticket(const SSL_SESSION *session,
+                             const uint8_t **out_ticket, size_t *out_len) {
+  if (out_ticket != nullptr) {
+    *out_ticket = session->ticket.data();
+  }
+  *out_len = session->ticket.size();
+}
+
+int SSL_SESSION_set_ticket(SSL_SESSION *session, const uint8_t *ticket,
+                           size_t ticket_len) {
+  return session->ticket.CopyFrom(MakeConstSpan(ticket, ticket_len));
+}
+
+uint32_t SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *session) {
+  return session->ticket_lifetime_hint;
+}
+
+const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *session) {
+  return session->cipher;
+}
+
+int SSL_SESSION_has_peer_sha256(const SSL_SESSION *session) {
+  return session->peer_sha256_valid;
+}
+
+void SSL_SESSION_get0_peer_sha256(const SSL_SESSION *session,
+                                  const uint8_t **out_ptr, size_t *out_len) {
+  if (session->peer_sha256_valid) {
+    *out_ptr = session->peer_sha256;
+    *out_len = sizeof(session->peer_sha256);
+  } else {
+    *out_ptr = nullptr;
+    *out_len = 0;
+  }
+}
+
+int SSL_SESSION_early_data_capable(const SSL_SESSION *session) {
+  return ssl_session_protocol_version(session) >= TLS1_3_VERSION &&
+         session->ticket_max_early_data != 0;
+}
+
+SSL_SESSION *SSL_magic_pending_session_ptr(void) {
+  return (SSL_SESSION *)&g_pending_session_magic;
+}
+
+SSL_SESSION *SSL_get_session(const SSL *ssl) {
+  // Once the handshake completes we return the established session. Otherwise
+  // we return the intermediate session, either |session| (for resumption) or
+  // |new_session| if doing a full handshake.
+  if (!SSL_in_init(ssl)) {
+    return ssl->s3->established_session.get();
+  }
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs->early_session) {
+    return hs->early_session.get();
+  }
+  if (hs->new_session) {
+    return hs->new_session.get();
+  }
+  return ssl->session.get();
+}
+
+SSL_SESSION *SSL_get1_session(SSL *ssl) {
+  SSL_SESSION *ret = SSL_get_session(ssl);
+  if (ret != NULL) {
+    SSL_SESSION_up_ref(ret);
+  }
+  return ret;
+}
+
+int SSL_SESSION_get_ex_new_index(long argl, void *argp,
+                                 CRYPTO_EX_unused *unused,
+                                 CRYPTO_EX_dup *dup_unused,
+                                 CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&session->ex_data, idx, arg);
+}
+
+void *SSL_SESSION_get_ex_data(const SSL_SESSION *session, int idx) {
+  return CRYPTO_get_ex_data(&session->ex_data, idx);
+}
+
+int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session) {
+  // Although |session| is inserted into two structures (a doubly-linked list
+  // and the hash table), |ctx| only takes one reference.
+  UniquePtr<SSL_SESSION> owned_session = UpRef(session);
+
+  SSL_SESSION *old_session;
+  MutexWriteLock lock(&ctx->lock);
+  if (!lh_SSL_SESSION_insert(ctx->sessions, &old_session, session)) {
+    return 0;
+  }
+  // |ctx->sessions| took ownership of |session| and gave us back a reference to
+  // |old_session|. (|old_session| may be the same as |session|, in which case
+  // we traded identical references with |ctx->sessions|.)
+  owned_session.release();
+  owned_session.reset(old_session);
+
+  if (old_session != NULL) {
+    if (old_session == session) {
+      // |session| was already in the cache. There are no linked list pointers
+      // to update.
+      return 0;
+    }
+
+    // There was a session ID collision. |old_session| was replaced with
+    // |session| in the hash table, so |old_session| must be removed from the
+    // linked list to match.
+    SSL_SESSION_list_remove(ctx, old_session);
+  }
+
+  SSL_SESSION_list_add(ctx, session);
+
+  // Enforce any cache size limits.
+  if (SSL_CTX_sess_get_cache_size(ctx) > 0) {
+    while (lh_SSL_SESSION_num_items(ctx->sessions) >
+           SSL_CTX_sess_get_cache_size(ctx)) {
+      if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) {
+        break;
+      }
+    }
+  }
+
+  return 1;
+}
+
+int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session) {
+  return remove_session_lock(ctx, session, 1);
+}
+
+int SSL_set_session(SSL *ssl, SSL_SESSION *session) {
+  // SSL_set_session may only be called before the handshake has started.
+  if (ssl->s3->initial_handshake_complete ||
+      ssl->s3->hs == NULL ||
+      ssl->s3->hs->state != 0) {
+    abort();
+  }
+
+  ssl_set_session(ssl, session);
+  return 1;
+}
+
+uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout) {
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  // Historically, zero was treated as |SSL_DEFAULT_SESSION_TIMEOUT|.
+  if (timeout == 0) {
+    timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+  }
+
+  uint32_t old_timeout = ctx->session_timeout;
+  ctx->session_timeout = timeout;
+  return old_timeout;
+}
+
+uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx) {
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  return ctx->session_timeout;
+}
+
+void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx, uint32_t timeout) {
+  ctx->session_psk_dhe_timeout = timeout;
+}
+
+typedef struct timeout_param_st {
+  SSL_CTX *ctx;
+  uint64_t time;
+  LHASH_OF(SSL_SESSION) *cache;
+} TIMEOUT_PARAM;
+
+static void timeout_doall_arg(SSL_SESSION *session, void *void_param) {
+  TIMEOUT_PARAM *param = reinterpret_cast<TIMEOUT_PARAM *>(void_param);
+
+  if (param->time == 0 ||
+      session->time + session->timeout < session->time ||
+      param->time > (session->time + session->timeout)) {
+    // The reason we don't call SSL_CTX_remove_session() is to
+    // save on locking overhead
+    (void) lh_SSL_SESSION_delete(param->cache, session);
+    SSL_SESSION_list_remove(param->ctx, session);
+    if (param->ctx->remove_session_cb != NULL) {
+      param->ctx->remove_session_cb(param->ctx, session);
+    }
+    SSL_SESSION_free(session);
+  }
+}
+
+void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time) {
+  TIMEOUT_PARAM tp;
+
+  tp.ctx = ctx;
+  tp.cache = ctx->sessions;
+  if (tp.cache == NULL) {
+    return;
+  }
+  tp.time = time;
+  MutexWriteLock lock(&ctx->lock);
+  lh_SSL_SESSION_doall_arg(tp.cache, timeout_doall_arg, &tp);
+}
+
+void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
+                             int (*cb)(SSL *ssl, SSL_SESSION *session)) {
+  ctx->new_session_cb = cb;
+}
+
+int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *session) {
+  return ctx->new_session_cb;
+}
+
+void SSL_CTX_sess_set_remove_cb(
+    SSL_CTX *ctx, void (*cb)(SSL_CTX *ctx, SSL_SESSION *session)) {
+  ctx->remove_session_cb = cb;
+}
+
+void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX *ctx,
+                                                 SSL_SESSION *session) {
+  return ctx->remove_session_cb;
+}
+
+void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
+                             SSL_SESSION *(*cb)(SSL *ssl, const uint8_t *id,
+                                                int id_len, int *out_copy)) {
+  ctx->get_session_cb = cb;
+}
+
+SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
+                                                      const uint8_t *id,
+                                                      int id_len,
+                                                      int *out_copy) {
+  return ctx->get_session_cb;
+}
+
+void SSL_CTX_set_info_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value)) {
+  ctx->info_callback = cb;
+}
+
+void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type,
+                                                int value) {
+  return ctx->info_callback;
+}
+
+void SSL_CTX_set_channel_id_cb(SSL_CTX *ctx,
+                               void (*cb)(SSL *ssl, EVP_PKEY **pkey)) {
+  ctx->channel_id_cb = cb;
+}
+
+void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(SSL *ssl, EVP_PKEY **pkey) {
+  return ctx->channel_id_cb;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc.grpc_back
new file mode 100644
index 0000000..77d3f4c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_session.cc.grpc_back	
@@ -0,0 +1,1274 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/err.h>
+#include <openssl/hmac.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// The address of this is a magic value, a pointer to which is returned by
+// SSL_magic_pending_session_ptr(). It allows a session callback to indicate
+// that it needs to asynchronously fetch session information.
+static const char g_pending_session_magic = 0;
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class =
+    CRYPTO_EX_DATA_CLASS_INIT_WITH_APP_DATA;
+
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session);
+static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session);
+static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock);
+
+UniquePtr<SSL_SESSION> ssl_session_new(const SSL_X509_METHOD *x509_method) {
+  return MakeUnique<SSL_SESSION>(x509_method);
+}
+
+uint32_t ssl_hash_session_id(Span<const uint8_t> session_id) {
+  // Take the first four bytes of |session_id|. Session IDs are generated by the
+  // server randomly, so we can assume even using the first four bytes results
+  // in a good distribution.
+  uint8_t tmp_storage[sizeof(uint32_t)];
+  if (session_id.size() < sizeof(tmp_storage)) {
+    OPENSSL_memset(tmp_storage, 0, sizeof(tmp_storage));
+    OPENSSL_memcpy(tmp_storage, session_id.data(), session_id.size());
+    session_id = tmp_storage;
+  }
+
+  uint32_t hash =
+      ((uint32_t)session_id[0]) |
+      ((uint32_t)session_id[1] << 8) |
+      ((uint32_t)session_id[2] << 16) |
+      ((uint32_t)session_id[3] << 24);
+
+  return hash;
+}
+
+UniquePtr<SSL_SESSION> SSL_SESSION_dup(SSL_SESSION *session, int dup_flags) {
+  UniquePtr<SSL_SESSION> new_session = ssl_session_new(session->x509_method);
+  if (!new_session) {
+    return nullptr;
+  }
+
+  new_session->is_server = session->is_server;
+  new_session->ssl_version = session->ssl_version;
+  new_session->sid_ctx_length = session->sid_ctx_length;
+  OPENSSL_memcpy(new_session->sid_ctx, session->sid_ctx, session->sid_ctx_length);
+
+  // Copy the key material.
+  new_session->master_key_length = session->master_key_length;
+  OPENSSL_memcpy(new_session->master_key, session->master_key,
+         session->master_key_length);
+  new_session->cipher = session->cipher;
+
+  // Copy authentication state.
+  if (session->psk_identity != nullptr) {
+    new_session->psk_identity.reset(
+        OPENSSL_strdup(session->psk_identity.get()));
+    if (new_session->psk_identity == nullptr) {
+      return nullptr;
+    }
+  }
+  if (session->certs != nullptr) {
+    auto buf_up_ref = [](CRYPTO_BUFFER *buf) {
+      CRYPTO_BUFFER_up_ref(buf);
+      return buf;
+    };
+    new_session->certs.reset(sk_CRYPTO_BUFFER_deep_copy(
+        session->certs.get(), buf_up_ref, CRYPTO_BUFFER_free));
+    if (new_session->certs == nullptr) {
+      return nullptr;
+    }
+  }
+
+  if (!session->x509_method->session_dup(new_session.get(), session)) {
+    return nullptr;
+  }
+
+  new_session->verify_result = session->verify_result;
+
+  new_session->ocsp_response = UpRef(session->ocsp_response);
+  new_session->signed_cert_timestamp_list =
+      UpRef(session->signed_cert_timestamp_list);
+
+  OPENSSL_memcpy(new_session->peer_sha256, session->peer_sha256,
+                 SHA256_DIGEST_LENGTH);
+  new_session->peer_sha256_valid = session->peer_sha256_valid;
+
+  new_session->peer_signature_algorithm = session->peer_signature_algorithm;
+
+  new_session->timeout = session->timeout;
+  new_session->auth_timeout = session->auth_timeout;
+  new_session->time = session->time;
+
+  // Copy non-authentication connection properties.
+  if (dup_flags & SSL_SESSION_INCLUDE_NONAUTH) {
+    new_session->session_id_length = session->session_id_length;
+    OPENSSL_memcpy(new_session->session_id, session->session_id,
+                   session->session_id_length);
+
+    new_session->group_id = session->group_id;
+
+    OPENSSL_memcpy(new_session->original_handshake_hash,
+                   session->original_handshake_hash,
+                   session->original_handshake_hash_len);
+    new_session->original_handshake_hash_len =
+        session->original_handshake_hash_len;
+    new_session->ticket_lifetime_hint = session->ticket_lifetime_hint;
+    new_session->ticket_age_add = session->ticket_age_add;
+    new_session->ticket_max_early_data = session->ticket_max_early_data;
+    new_session->extended_master_secret = session->extended_master_secret;
+
+    if (!new_session->early_alpn.CopyFrom(session->early_alpn)) {
+      return nullptr;
+    }
+  }
+
+  // Copy the ticket.
+  if (dup_flags & SSL_SESSION_INCLUDE_TICKET &&
+      !new_session->ticket.CopyFrom(session->ticket)) {
+    return nullptr;
+  }
+
+  // The new_session does not get a copy of the ex_data.
+
+  new_session->not_resumable = true;
+  return new_session;
+}
+
+void ssl_session_rebase_time(SSL *ssl, SSL_SESSION *session) {
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // To avoid overflows and underflows, if we've gone back in time, update the
+  // time, but mark the session expired.
+  if (session->time > now.tv_sec) {
+    session->time = now.tv_sec;
+    session->timeout = 0;
+    session->auth_timeout = 0;
+    return;
+  }
+
+  // Adjust the session time and timeouts. If the session has already expired,
+  // clamp the timeouts at zero.
+  uint64_t delta = now.tv_sec - session->time;
+  session->time = now.tv_sec;
+  if (session->timeout < delta) {
+    session->timeout = 0;
+  } else {
+    session->timeout -= delta;
+  }
+  if (session->auth_timeout < delta) {
+    session->auth_timeout = 0;
+  } else {
+    session->auth_timeout -= delta;
+  }
+}
+
+void ssl_session_renew_timeout(SSL *ssl, SSL_SESSION *session,
+                               uint32_t timeout) {
+  // Rebase the timestamp relative to the current time so |timeout| is measured
+  // correctly.
+  ssl_session_rebase_time(ssl, session);
+
+  if (session->timeout > timeout) {
+    return;
+  }
+
+  session->timeout = timeout;
+  if (session->timeout > session->auth_timeout) {
+    session->timeout = session->auth_timeout;
+  }
+}
+
+uint16_t ssl_session_protocol_version(const SSL_SESSION *session) {
+  uint16_t ret;
+  if (!ssl_protocol_version_from_wire(&ret, session->ssl_version)) {
+    // An |SSL_SESSION| will never have an invalid version. This is enforced by
+    // the parser.
+    assert(0);
+    return 0;
+  }
+
+  return ret;
+}
+
+const EVP_MD *ssl_session_get_digest(const SSL_SESSION *session) {
+  return ssl_get_handshake_digest(ssl_session_protocol_version(session),
+                                  session->cipher);
+}
+
+int ssl_get_new_session(SSL_HANDSHAKE *hs, int is_server) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->mode & SSL_MODE_NO_SESSION_CREATION) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SESSION_MAY_NOT_BE_CREATED);
+    return 0;
+  }
+
+  UniquePtr<SSL_SESSION> session = ssl_session_new(ssl->ctx->x509_method);
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->is_server = is_server;
+  session->ssl_version = ssl->version;
+
+  // Fill in the time from the |SSL_CTX|'s clock.
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  session->time = now.tv_sec;
+
+  uint16_t version = ssl_protocol_version(ssl);
+  if (version >= TLS1_3_VERSION) {
+    // TLS 1.3 uses tickets as authenticators, so we are willing to use them for
+    // longer.
+    session->timeout = ssl->session_ctx->session_psk_dhe_timeout;
+    session->auth_timeout = SSL_DEFAULT_SESSION_AUTH_TIMEOUT;
+  } else {
+    // TLS 1.2 resumption does not incorporate new key material, so we use a
+    // much shorter timeout.
+    session->timeout = ssl->session_ctx->session_timeout;
+    session->auth_timeout = ssl->session_ctx->session_timeout;
+  }
+
+  if (is_server) {
+    if (hs->ticket_expected || version >= TLS1_3_VERSION) {
+      // Don't set session IDs for sessions resumed with tickets. This will keep
+      // them out of the session cache.
+      session->session_id_length = 0;
+    } else {
+      session->session_id_length = SSL3_SSL_SESSION_ID_LENGTH;
+      if (!RAND_bytes(session->session_id, session->session_id_length)) {
+        return 0;
+      }
+    }
+  } else {
+    session->session_id_length = 0;
+  }
+
+  if (hs->config->cert->sid_ctx_length > sizeof(session->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  OPENSSL_memcpy(session->sid_ctx, hs->config->cert->sid_ctx,
+                 hs->config->cert->sid_ctx_length);
+  session->sid_ctx_length = hs->config->cert->sid_ctx_length;
+
+  // The session is marked not resumable until it is completely filled in.
+  session->not_resumable = true;
+  session->verify_result = X509_V_ERR_INVALID_CALL;
+
+  hs->new_session = std::move(session);
+  ssl_set_session(ssl, NULL);
+  return 1;
+}
+
+int ssl_ctx_rotate_ticket_encryption_key(SSL_CTX *ctx) {
+  OPENSSL_timeval now;
+  ssl_ctx_get_current_time(ctx, &now);
+  {
+    // Avoid acquiring a write lock in the common case (i.e. a non-default key
+    // is used or the default keys have not expired yet).
+    MutexReadLock lock(&ctx->lock);
+    if (ctx->ticket_key_current &&
+        (ctx->ticket_key_current->next_rotation_tv_sec == 0 ||
+         ctx->ticket_key_current->next_rotation_tv_sec > now.tv_sec) &&
+        (!ctx->ticket_key_prev ||
+         ctx->ticket_key_prev->next_rotation_tv_sec > now.tv_sec)) {
+      return 1;
+    }
+  }
+
+  MutexWriteLock lock(&ctx->lock);
+  if (!ctx->ticket_key_current ||
+      (ctx->ticket_key_current->next_rotation_tv_sec != 0 &&
+       ctx->ticket_key_current->next_rotation_tv_sec <= now.tv_sec)) {
+    // The current key has not been initialized or it is expired.
+    auto new_key = bssl::MakeUnique<TicketKey>();
+    if (!new_key) {
+      return 0;
+    }
+    RAND_bytes(new_key->name, 16);
+    RAND_bytes(new_key->hmac_key, 16);
+    RAND_bytes(new_key->aes_key, 16);
+    new_key->next_rotation_tv_sec =
+        now.tv_sec + SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL;
+    if (ctx->ticket_key_current) {
+      // The current key expired. Rotate it to prev and bump up its rotation
+      // timestamp. Note that even with the new rotation time it may still be
+      // expired and get dropped below.
+      ctx->ticket_key_current->next_rotation_tv_sec +=
+          SSL_DEFAULT_TICKET_KEY_ROTATION_INTERVAL;
+      ctx->ticket_key_prev = std::move(ctx->ticket_key_current);
+    }
+    ctx->ticket_key_current = std::move(new_key);
+  }
+
+  // Drop an expired prev key.
+  if (ctx->ticket_key_prev &&
+      ctx->ticket_key_prev->next_rotation_tv_sec <= now.tv_sec) {
+    ctx->ticket_key_prev.reset();
+  }
+
+  return 1;
+}
+
+static int ssl_encrypt_ticket_with_cipher_ctx(SSL_HANDSHAKE *hs, CBB *out,
+                                              const uint8_t *session_buf,
+                                              size_t session_len) {
+  ScopedEVP_CIPHER_CTX ctx;
+  ScopedHMAC_CTX hctx;
+
+  // If the session is too long, emit a dummy value rather than abort the
+  // connection.
+  static const size_t kMaxTicketOverhead =
+      16 + EVP_MAX_IV_LENGTH + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE;
+  if (session_len > 0xffff - kMaxTicketOverhead) {
+    static const char kTicketPlaceholder[] = "TICKET TOO LARGE";
+    return CBB_add_bytes(out, (const uint8_t *)kTicketPlaceholder,
+                         strlen(kTicketPlaceholder));
+  }
+
+  // Initialize HMAC and cipher contexts. If callback present it does all the
+  // work otherwise use generated values from parent ctx.
+  SSL_CTX *tctx = hs->ssl->session_ctx.get();
+  uint8_t iv[EVP_MAX_IV_LENGTH];
+  uint8_t key_name[16];
+  if (tctx->ticket_key_cb != NULL) {
+    if (tctx->ticket_key_cb(hs->ssl, key_name, iv, ctx.get(), hctx.get(),
+                            1 /* encrypt */) < 0) {
+      return 0;
+    }
+  } else {
+    // Rotate ticket key if necessary.
+    if (!ssl_ctx_rotate_ticket_encryption_key(tctx)) {
+      return 0;
+    }
+    MutexReadLock lock(&tctx->lock);
+    if (!RAND_bytes(iv, 16) ||
+        !EVP_EncryptInit_ex(ctx.get(), EVP_aes_128_cbc(), NULL,
+                            tctx->ticket_key_current->aes_key, iv) ||
+        !HMAC_Init_ex(hctx.get(), tctx->ticket_key_current->hmac_key, 16,
+                      tlsext_tick_md(), NULL)) {
+      return 0;
+    }
+    OPENSSL_memcpy(key_name, tctx->ticket_key_current->name, 16);
+  }
+
+  uint8_t *ptr;
+  if (!CBB_add_bytes(out, key_name, 16) ||
+      !CBB_add_bytes(out, iv, EVP_CIPHER_CTX_iv_length(ctx.get())) ||
+      !CBB_reserve(out, &ptr, session_len + EVP_MAX_BLOCK_LENGTH)) {
+    return 0;
+  }
+
+  size_t total = 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  OPENSSL_memcpy(ptr, session_buf, session_len);
+  total = session_len;
+#else
+  int len;
+  if (!EVP_EncryptUpdate(ctx.get(), ptr + total, &len, session_buf, session_len)) {
+    return 0;
+  }
+  total += len;
+  if (!EVP_EncryptFinal_ex(ctx.get(), ptr + total, &len)) {
+    return 0;
+  }
+  total += len;
+#endif
+  if (!CBB_did_write(out, total)) {
+    return 0;
+  }
+
+  unsigned hlen;
+  if (!HMAC_Update(hctx.get(), CBB_data(out), CBB_len(out)) ||
+      !CBB_reserve(out, &ptr, EVP_MAX_MD_SIZE) ||
+      !HMAC_Final(hctx.get(), ptr, &hlen) ||
+      !CBB_did_write(out, hlen)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ssl_encrypt_ticket_with_method(SSL_HANDSHAKE *hs, CBB *out,
+                                          const uint8_t *session_buf,
+                                          size_t session_len) {
+  SSL *const ssl = hs->ssl;
+  const SSL_TICKET_AEAD_METHOD *method = ssl->session_ctx->ticket_aead_method;
+  const size_t max_overhead = method->max_overhead(ssl);
+  const size_t max_out = session_len + max_overhead;
+  if (max_out < max_overhead) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+    return 0;
+  }
+
+  uint8_t *ptr;
+  if (!CBB_reserve(out, &ptr, max_out)) {
+    return 0;
+  }
+
+  size_t out_len;
+  if (!method->seal(ssl, ptr, &out_len, max_out, session_buf,
+                    session_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_TICKET_ENCRYPTION_FAILED);
+    return 0;
+  }
+
+  if (!CBB_did_write(out, out_len)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+int ssl_encrypt_ticket(SSL_HANDSHAKE *hs, CBB *out,
+                       const SSL_SESSION *session) {
+  // Serialize the SSL_SESSION to be encoded into the ticket.
+  uint8_t *session_buf = NULL;
+  size_t session_len;
+  if (!SSL_SESSION_to_bytes_for_ticket(session, &session_buf, &session_len)) {
+    return -1;
+  }
+
+  int ret = 0;
+  if (hs->ssl->session_ctx->ticket_aead_method) {
+    ret = ssl_encrypt_ticket_with_method(hs, out, session_buf, session_len);
+  } else {
+    ret = ssl_encrypt_ticket_with_cipher_ctx(hs, out, session_buf, session_len);
+  }
+
+  OPENSSL_free(session_buf);
+  return ret;
+}
+
+int ssl_session_is_context_valid(const SSL_HANDSHAKE *hs,
+                                 const SSL_SESSION *session) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  return session->sid_ctx_length == hs->config->cert->sid_ctx_length &&
+         OPENSSL_memcmp(session->sid_ctx, hs->config->cert->sid_ctx,
+                        hs->config->cert->sid_ctx_length) == 0;
+}
+
+int ssl_session_is_time_valid(const SSL *ssl, const SSL_SESSION *session) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // Reject tickets from the future to avoid underflow.
+  if (now.tv_sec < session->time) {
+    return 0;
+  }
+
+  return session->timeout > now.tv_sec - session->time;
+}
+
+int ssl_session_is_resumable(const SSL_HANDSHAKE *hs,
+                             const SSL_SESSION *session) {
+  const SSL *const ssl = hs->ssl;
+  return ssl_session_is_context_valid(hs, session) &&
+         // The session must have been created by the same type of end point as
+         // we're now using it with.
+         ssl->server == session->is_server &&
+         // The session must not be expired.
+         ssl_session_is_time_valid(ssl, session) &&
+         /* Only resume if the session's version matches the negotiated
+          * version. */
+         ssl->version == session->ssl_version &&
+         // Only resume if the session's cipher matches the negotiated one.
+         hs->new_cipher == session->cipher &&
+         // If the session contains a client certificate (either the full
+         // certificate or just the hash) then require that the form of the
+         // certificate matches the current configuration.
+         ((sk_CRYPTO_BUFFER_num(session->certs.get()) == 0 &&
+           !session->peer_sha256_valid) ||
+          session->peer_sha256_valid ==
+              hs->config->retain_only_sha256_of_client_certs);
+}
+
+// ssl_lookup_session looks up |session_id| in the session cache and sets
+// |*out_session| to an |SSL_SESSION| object if found.
+static enum ssl_hs_wait_t ssl_lookup_session(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    Span<const uint8_t> session_id) {
+  SSL *const ssl = hs->ssl;
+  out_session->reset();
+
+  if (session_id.empty() || session_id.size() > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return ssl_hs_ok;
+  }
+
+  UniquePtr<SSL_SESSION> session;
+  // Try the internal cache, if it exists.
+  if (!(ssl->session_ctx->session_cache_mode &
+        SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) {
+    uint32_t hash = ssl_hash_session_id(session_id);
+    auto cmp = [](const void *key, const SSL_SESSION *sess) -> int {
+      Span<const uint8_t> key_id =
+          *reinterpret_cast<const Span<const uint8_t> *>(key);
+      Span<const uint8_t> sess_id =
+          MakeConstSpan(sess->session_id, sess->session_id_length);
+      return key_id == sess_id ? 0 : 1;
+    };
+    MutexReadLock lock(&ssl->session_ctx->lock);
+    // |lh_SSL_SESSION_retrieve_key| returns a non-owning pointer.
+    session = UpRef(lh_SSL_SESSION_retrieve_key(ssl->session_ctx->sessions,
+                                                &session_id, hash, cmp));
+    // TODO(davidben): This should probably move it to the front of the list.
+  }
+
+  // Fall back to the external cache, if it exists.
+  if (!session && ssl->session_ctx->get_session_cb != nullptr) {
+    int copy = 1;
+    session.reset(ssl->session_ctx->get_session_cb(ssl, session_id.data(),
+                                                   session_id.size(), &copy));
+    if (!session) {
+      return ssl_hs_ok;
+    }
+
+    if (session.get() == SSL_magic_pending_session_ptr()) {
+      session.release();  // This pointer is not actually owned.
+      return ssl_hs_pending_session;
+    }
+
+    // Increment reference count now if the session callback asks us to do so
+    // (note that if the session structures returned by the callback are shared
+    // between threads, it must handle the reference count itself [i.e. copy ==
+    // 0], or things won't be thread-safe).
+    if (copy) {
+      SSL_SESSION_up_ref(session.get());
+    }
+
+    // Add the externally cached session to the internal cache if necessary.
+    if (!(ssl->session_ctx->session_cache_mode &
+          SSL_SESS_CACHE_NO_INTERNAL_STORE)) {
+      SSL_CTX_add_session(ssl->session_ctx.get(), session.get());
+    }
+  }
+
+  if (session && !ssl_session_is_time_valid(ssl, session.get())) {
+    // The session was from the cache, so remove it.
+    SSL_CTX_remove_session(ssl->session_ctx.get(), session.get());
+    session.reset();
+  }
+
+  *out_session = std::move(session);
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t ssl_get_prev_session(SSL_HANDSHAKE *hs,
+                                        UniquePtr<SSL_SESSION> *out_session,
+                                        bool *out_tickets_supported,
+                                        bool *out_renew_ticket,
+                                        const SSL_CLIENT_HELLO *client_hello) {
+  // This is used only by servers.
+  assert(hs->ssl->server);
+  UniquePtr<SSL_SESSION> session;
+  bool renew_ticket = false;
+
+  // If tickets are disabled, always behave as if no tickets are present.
+  CBS ticket;
+  const bool tickets_supported =
+      !(SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) &&
+      ssl_client_hello_get_extension(client_hello, &ticket,
+                                     TLSEXT_TYPE_session_ticket);
+  if (tickets_supported && CBS_len(&ticket) != 0) {
+    switch (ssl_process_ticket(hs, &session, &renew_ticket, ticket,
+                               MakeConstSpan(client_hello->session_id,
+                                             client_hello->session_id_len))) {
+      case ssl_ticket_aead_success:
+        break;
+      case ssl_ticket_aead_ignore_ticket:
+        assert(!session);
+        break;
+      case ssl_ticket_aead_error:
+        return ssl_hs_error;
+      case ssl_ticket_aead_retry:
+        return ssl_hs_pending_ticket;
+    }
+  } else {
+    // The client didn't send a ticket, so the session ID is a real ID.
+    enum ssl_hs_wait_t lookup_ret = ssl_lookup_session(
+        hs, &session,
+        MakeConstSpan(client_hello->session_id, client_hello->session_id_len));
+    if (lookup_ret != ssl_hs_ok) {
+      return lookup_ret;
+    }
+  }
+
+  *out_session = std::move(session);
+  *out_tickets_supported = tickets_supported;
+  *out_renew_ticket = renew_ticket;
+  return ssl_hs_ok;
+}
+
+static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *session, int lock) {
+  int ret = 0;
+
+  if (session != NULL && session->session_id_length != 0) {
+    if (lock) {
+      CRYPTO_MUTEX_lock_write(&ctx->lock);
+    }
+    SSL_SESSION *found_session = lh_SSL_SESSION_retrieve(ctx->sessions,
+                                                         session);
+    if (found_session == session) {
+      ret = 1;
+      found_session = lh_SSL_SESSION_delete(ctx->sessions, session);
+      SSL_SESSION_list_remove(ctx, session);
+    }
+
+    if (lock) {
+      CRYPTO_MUTEX_unlock_write(&ctx->lock);
+    }
+
+    if (ret) {
+      if (ctx->remove_session_cb != NULL) {
+        ctx->remove_session_cb(ctx, found_session);
+      }
+      SSL_SESSION_free(found_session);
+    }
+  }
+
+  return ret;
+}
+
+void ssl_set_session(SSL *ssl, SSL_SESSION *session) {
+  if (ssl->session.get() == session) {
+    return;
+  }
+
+  ssl->session = UpRef(session);
+}
+
+// locked by SSL_CTX in the calling function
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *session) {
+  if (session->next == NULL || session->prev == NULL) {
+    return;
+  }
+
+  if (session->next == (SSL_SESSION *)&ctx->session_cache_tail) {
+    // last element in list
+    if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) {
+      // only one element in list
+      ctx->session_cache_head = NULL;
+      ctx->session_cache_tail = NULL;
+    } else {
+      ctx->session_cache_tail = session->prev;
+      session->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail);
+    }
+  } else {
+    if (session->prev == (SSL_SESSION *)&ctx->session_cache_head) {
+      // first element in list
+      ctx->session_cache_head = session->next;
+      session->next->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    } else {  // middle of list
+      session->next->prev = session->prev;
+      session->prev->next = session->next;
+    }
+  }
+  session->prev = session->next = NULL;
+}
+
+static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *session) {
+  if (session->next != NULL && session->prev != NULL) {
+    SSL_SESSION_list_remove(ctx, session);
+  }
+
+  if (ctx->session_cache_head == NULL) {
+    ctx->session_cache_head = session;
+    ctx->session_cache_tail = session;
+    session->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    session->next = (SSL_SESSION *)&(ctx->session_cache_tail);
+  } else {
+    session->next = ctx->session_cache_head;
+    session->next->prev = session;
+    session->prev = (SSL_SESSION *)&(ctx->session_cache_head);
+    ctx->session_cache_head = session;
+  }
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+ssl_session_st::ssl_session_st(const SSL_X509_METHOD *method)
+    : x509_method(method),
+      extended_master_secret(false),
+      peer_sha256_valid(false),
+      not_resumable(false),
+      ticket_age_add_valid(false),
+      is_server(false) {
+  CRYPTO_new_ex_data(&ex_data);
+  time = ::time(nullptr);
+}
+
+ssl_session_st::~ssl_session_st() {
+  CRYPTO_free_ex_data(&g_ex_data_class, this, &ex_data);
+  x509_method->session_clear(this);
+}
+
+SSL_SESSION *SSL_SESSION_new(const SSL_CTX *ctx) {
+  return ssl_session_new(ctx->x509_method).release();
+}
+
+int SSL_SESSION_up_ref(SSL_SESSION *session) {
+  CRYPTO_refcount_inc(&session->references);
+  return 1;
+}
+
+void SSL_SESSION_free(SSL_SESSION *session) {
+  if (session == NULL ||
+      !CRYPTO_refcount_dec_and_test_zero(&session->references)) {
+    return;
+  }
+
+  session->~ssl_session_st();
+  OPENSSL_free(session);
+}
+
+const uint8_t *SSL_SESSION_get_id(const SSL_SESSION *session,
+                                  unsigned *out_len) {
+  if (out_len != NULL) {
+    *out_len = session->session_id_length;
+  }
+  return session->session_id;
+}
+
+int SSL_SESSION_set1_id(SSL_SESSION *session, const uint8_t *sid,
+                        size_t sid_len) {
+  if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_TOO_LONG);
+    return 0;
+  }
+
+  // Use memmove in case someone passes in the output of |SSL_SESSION_get_id|.
+  OPENSSL_memmove(session->session_id, sid, sid_len);
+  session->session_id_length = sid_len;
+  return 1;
+}
+
+uint32_t SSL_SESSION_get_timeout(const SSL_SESSION *session) {
+  return session->timeout;
+}
+
+uint64_t SSL_SESSION_get_time(const SSL_SESSION *session) {
+  if (session == NULL) {
+    // NULL should crash, but silently accept it here for compatibility.
+    return 0;
+  }
+  return session->time;
+}
+
+X509 *SSL_SESSION_get0_peer(const SSL_SESSION *session) {
+  return session->x509_peer;
+}
+
+const STACK_OF(CRYPTO_BUFFER) *
+    SSL_SESSION_get0_peer_certificates(const SSL_SESSION *session) {
+  return session->certs.get();
+}
+
+void SSL_SESSION_get0_signed_cert_timestamp_list(const SSL_SESSION *session,
+                                                 const uint8_t **out,
+                                                 size_t *out_len) {
+  if (session->signed_cert_timestamp_list) {
+    *out = CRYPTO_BUFFER_data(session->signed_cert_timestamp_list.get());
+    *out_len = CRYPTO_BUFFER_len(session->signed_cert_timestamp_list.get());
+  } else {
+    *out = nullptr;
+    *out_len = 0;
+  }
+}
+
+void SSL_SESSION_get0_ocsp_response(const SSL_SESSION *session,
+                                    const uint8_t **out, size_t *out_len) {
+  if (session->ocsp_response) {
+    *out = CRYPTO_BUFFER_data(session->ocsp_response.get());
+    *out_len = CRYPTO_BUFFER_len(session->ocsp_response.get());
+  } else {
+    *out = nullptr;
+    *out_len = 0;
+  }
+}
+
+size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, uint8_t *out,
+                                  size_t max_out) {
+  // TODO(davidben): Fix master_key_length's type and remove these casts.
+  if (max_out == 0) {
+    return (size_t)session->master_key_length;
+  }
+  if (max_out > (size_t)session->master_key_length) {
+    max_out = (size_t)session->master_key_length;
+  }
+  OPENSSL_memcpy(out, session->master_key, max_out);
+  return max_out;
+}
+
+uint64_t SSL_SESSION_set_time(SSL_SESSION *session, uint64_t time) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->time = time;
+  return time;
+}
+
+uint32_t SSL_SESSION_set_timeout(SSL_SESSION *session, uint32_t timeout) {
+  if (session == NULL) {
+    return 0;
+  }
+
+  session->timeout = timeout;
+  session->auth_timeout = timeout;
+  return 1;
+}
+
+const uint8_t *SSL_SESSION_get0_id_context(const SSL_SESSION *session,
+                                           unsigned *out_len) {
+  if (out_len != NULL) {
+    *out_len = session->sid_ctx_length;
+  }
+  return session->sid_ctx;
+}
+
+int SSL_SESSION_set1_id_context(SSL_SESSION *session, const uint8_t *sid_ctx,
+                                size_t sid_ctx_len) {
+  if (sid_ctx_len > sizeof(session->sid_ctx)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+    return 0;
+  }
+
+  static_assert(sizeof(session->sid_ctx) < 256, "sid_ctx_len does not fit");
+  session->sid_ctx_length = (uint8_t)sid_ctx_len;
+  OPENSSL_memcpy(session->sid_ctx, sid_ctx, sid_ctx_len);
+
+  return 1;
+}
+
+int SSL_SESSION_should_be_single_use(const SSL_SESSION *session) {
+  return ssl_session_protocol_version(session) >= TLS1_3_VERSION;
+}
+
+int SSL_SESSION_is_resumable(const SSL_SESSION *session) {
+  return !session->not_resumable;
+}
+
+int SSL_SESSION_has_ticket(const SSL_SESSION *session) {
+  return !session->ticket.empty();
+}
+
+void SSL_SESSION_get0_ticket(const SSL_SESSION *session,
+                             const uint8_t **out_ticket, size_t *out_len) {
+  if (out_ticket != nullptr) {
+    *out_ticket = session->ticket.data();
+  }
+  *out_len = session->ticket.size();
+}
+
+int SSL_SESSION_set_ticket(SSL_SESSION *session, const uint8_t *ticket,
+                           size_t ticket_len) {
+  return session->ticket.CopyFrom(MakeConstSpan(ticket, ticket_len));
+}
+
+uint32_t SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *session) {
+  return session->ticket_lifetime_hint;
+}
+
+const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *session) {
+  return session->cipher;
+}
+
+int SSL_SESSION_has_peer_sha256(const SSL_SESSION *session) {
+  return session->peer_sha256_valid;
+}
+
+void SSL_SESSION_get0_peer_sha256(const SSL_SESSION *session,
+                                  const uint8_t **out_ptr, size_t *out_len) {
+  if (session->peer_sha256_valid) {
+    *out_ptr = session->peer_sha256;
+    *out_len = sizeof(session->peer_sha256);
+  } else {
+    *out_ptr = nullptr;
+    *out_len = 0;
+  }
+}
+
+int SSL_SESSION_early_data_capable(const SSL_SESSION *session) {
+  return ssl_session_protocol_version(session) >= TLS1_3_VERSION &&
+         session->ticket_max_early_data != 0;
+}
+
+SSL_SESSION *SSL_magic_pending_session_ptr(void) {
+  return (SSL_SESSION *)&g_pending_session_magic;
+}
+
+SSL_SESSION *SSL_get_session(const SSL *ssl) {
+  // Once the handshake completes we return the established session. Otherwise
+  // we return the intermediate session, either |session| (for resumption) or
+  // |new_session| if doing a full handshake.
+  if (!SSL_in_init(ssl)) {
+    return ssl->s3->established_session.get();
+  }
+  SSL_HANDSHAKE *hs = ssl->s3->hs.get();
+  if (hs->early_session) {
+    return hs->early_session.get();
+  }
+  if (hs->new_session) {
+    return hs->new_session.get();
+  }
+  return ssl->session.get();
+}
+
+SSL_SESSION *SSL_get1_session(SSL *ssl) {
+  SSL_SESSION *ret = SSL_get_session(ssl);
+  if (ret != NULL) {
+    SSL_SESSION_up_ref(ret);
+  }
+  return ret;
+}
+
+int SSL_SESSION_get_ex_new_index(long argl, void *argp,
+                                 CRYPTO_EX_unused *unused,
+                                 CRYPTO_EX_dup *dup_unused,
+                                 CRYPTO_EX_free *free_func) {
+  int index;
+  if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+                               free_func)) {
+    return -1;
+  }
+  return index;
+}
+
+int SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx, void *arg) {
+  return CRYPTO_set_ex_data(&session->ex_data, idx, arg);
+}
+
+void *SSL_SESSION_get_ex_data(const SSL_SESSION *session, int idx) {
+  return CRYPTO_get_ex_data(&session->ex_data, idx);
+}
+
+int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *session) {
+  // Although |session| is inserted into two structures (a doubly-linked list
+  // and the hash table), |ctx| only takes one reference.
+  UniquePtr<SSL_SESSION> owned_session = UpRef(session);
+
+  SSL_SESSION *old_session;
+  MutexWriteLock lock(&ctx->lock);
+  if (!lh_SSL_SESSION_insert(ctx->sessions, &old_session, session)) {
+    return 0;
+  }
+  // |ctx->sessions| took ownership of |session| and gave us back a reference to
+  // |old_session|. (|old_session| may be the same as |session|, in which case
+  // we traded identical references with |ctx->sessions|.)
+  owned_session.release();
+  owned_session.reset(old_session);
+
+  if (old_session != NULL) {
+    if (old_session == session) {
+      // |session| was already in the cache. There are no linked list pointers
+      // to update.
+      return 0;
+    }
+
+    // There was a session ID collision. |old_session| was replaced with
+    // |session| in the hash table, so |old_session| must be removed from the
+    // linked list to match.
+    SSL_SESSION_list_remove(ctx, old_session);
+  }
+
+  SSL_SESSION_list_add(ctx, session);
+
+  // Enforce any cache size limits.
+  if (SSL_CTX_sess_get_cache_size(ctx) > 0) {
+    while (lh_SSL_SESSION_num_items(ctx->sessions) >
+           SSL_CTX_sess_get_cache_size(ctx)) {
+      if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) {
+        break;
+      }
+    }
+  }
+
+  return 1;
+}
+
+int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *session) {
+  return remove_session_lock(ctx, session, 1);
+}
+
+int SSL_set_session(SSL *ssl, SSL_SESSION *session) {
+  // SSL_set_session may only be called before the handshake has started.
+  if (ssl->s3->initial_handshake_complete ||
+      ssl->s3->hs == NULL ||
+      ssl->s3->hs->state != 0) {
+    abort();
+  }
+
+  ssl_set_session(ssl, session);
+  return 1;
+}
+
+uint32_t SSL_CTX_set_timeout(SSL_CTX *ctx, uint32_t timeout) {
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  // Historically, zero was treated as |SSL_DEFAULT_SESSION_TIMEOUT|.
+  if (timeout == 0) {
+    timeout = SSL_DEFAULT_SESSION_TIMEOUT;
+  }
+
+  uint32_t old_timeout = ctx->session_timeout;
+  ctx->session_timeout = timeout;
+  return old_timeout;
+}
+
+uint32_t SSL_CTX_get_timeout(const SSL_CTX *ctx) {
+  if (ctx == NULL) {
+    return 0;
+  }
+
+  return ctx->session_timeout;
+}
+
+void SSL_CTX_set_session_psk_dhe_timeout(SSL_CTX *ctx, uint32_t timeout) {
+  ctx->session_psk_dhe_timeout = timeout;
+}
+
+typedef struct timeout_param_st {
+  SSL_CTX *ctx;
+  uint64_t time;
+  LHASH_OF(SSL_SESSION) *cache;
+} TIMEOUT_PARAM;
+
+static void timeout_doall_arg(SSL_SESSION *session, void *void_param) {
+  TIMEOUT_PARAM *param = reinterpret_cast<TIMEOUT_PARAM *>(void_param);
+
+  if (param->time == 0 ||
+      session->time + session->timeout < session->time ||
+      param->time > (session->time + session->timeout)) {
+    // The reason we don't call SSL_CTX_remove_session() is to
+    // save on locking overhead
+    (void) lh_SSL_SESSION_delete(param->cache, session);
+    SSL_SESSION_list_remove(param->ctx, session);
+    if (param->ctx->remove_session_cb != NULL) {
+      param->ctx->remove_session_cb(param->ctx, session);
+    }
+    SSL_SESSION_free(session);
+  }
+}
+
+void SSL_CTX_flush_sessions(SSL_CTX *ctx, uint64_t time) {
+  TIMEOUT_PARAM tp;
+
+  tp.ctx = ctx;
+  tp.cache = ctx->sessions;
+  if (tp.cache == NULL) {
+    return;
+  }
+  tp.time = time;
+  MutexWriteLock lock(&ctx->lock);
+  lh_SSL_SESSION_doall_arg(tp.cache, timeout_doall_arg, &tp);
+}
+
+void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
+                             int (*cb)(SSL *ssl, SSL_SESSION *session)) {
+  ctx->new_session_cb = cb;
+}
+
+int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *session) {
+  return ctx->new_session_cb;
+}
+
+void SSL_CTX_sess_set_remove_cb(
+    SSL_CTX *ctx, void (*cb)(SSL_CTX *ctx, SSL_SESSION *session)) {
+  ctx->remove_session_cb = cb;
+}
+
+void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX *ctx,
+                                                 SSL_SESSION *session) {
+  return ctx->remove_session_cb;
+}
+
+void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
+                             SSL_SESSION *(*cb)(SSL *ssl, const uint8_t *id,
+                                                int id_len, int *out_copy)) {
+  ctx->get_session_cb = cb;
+}
+
+SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
+                                                      const uint8_t *id,
+                                                      int id_len,
+                                                      int *out_copy) {
+  return ctx->get_session_cb;
+}
+
+void SSL_CTX_set_info_callback(
+    SSL_CTX *ctx, void (*cb)(const SSL *ssl, int type, int value)) {
+  ctx->info_callback = cb;
+}
+
+void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type,
+                                                int value) {
+  return ctx->info_callback;
+}
+
+void SSL_CTX_set_channel_id_cb(SSL_CTX *ctx,
+                               void (*cb)(SSL *ssl, EVP_PKEY **pkey)) {
+  ctx->channel_id_cb = cb;
+}
+
+void (*SSL_CTX_get_channel_id_cb(SSL_CTX *ctx))(SSL *ssl, EVP_PKEY **pkey) {
+  return ctx->channel_id_cb;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc
new file mode 100644
index 0000000..26cfa80
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc	
@@ -0,0 +1,224 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+const char *SSL_state_string_long(const SSL *ssl) {
+  if (ssl->s3->hs == nullptr) {
+    return "SSL negotiation finished successfully";
+  }
+
+  return ssl->server ? ssl_server_handshake_state(ssl->s3->hs.get())
+                     : ssl_client_handshake_state(ssl->s3->hs.get());
+}
+
+const char *SSL_state_string(const SSL *ssl) {
+  return "!!!!!!";
+}
+
+const char *SSL_alert_type_string_long(int value) {
+  value >>= 8;
+  if (value == SSL3_AL_WARNING) {
+    return "warning";
+  } else if (value == SSL3_AL_FATAL) {
+    return "fatal";
+  }
+
+  return "unknown";
+}
+
+const char *SSL_alert_type_string(int value) {
+  return "!";
+}
+
+const char *SSL_alert_desc_string(int value) {
+  return "!!";
+}
+
+const char *SSL_alert_desc_string_long(int value) {
+  switch (value & 0xff) {
+    case SSL3_AD_CLOSE_NOTIFY:
+      return "close notify";
+
+    case SSL3_AD_UNEXPECTED_MESSAGE:
+      return "unexpected_message";
+
+    case SSL3_AD_BAD_RECORD_MAC:
+      return "bad record mac";
+
+    case SSL3_AD_DECOMPRESSION_FAILURE:
+      return "decompression failure";
+
+    case SSL3_AD_HANDSHAKE_FAILURE:
+      return "handshake failure";
+
+    case SSL3_AD_NO_CERTIFICATE:
+      return "no certificate";
+
+    case SSL3_AD_BAD_CERTIFICATE:
+      return "bad certificate";
+
+    case SSL3_AD_UNSUPPORTED_CERTIFICATE:
+      return "unsupported certificate";
+
+    case SSL3_AD_CERTIFICATE_REVOKED:
+      return "certificate revoked";
+
+    case SSL3_AD_CERTIFICATE_EXPIRED:
+      return "certificate expired";
+
+    case SSL3_AD_CERTIFICATE_UNKNOWN:
+      return "certificate unknown";
+
+    case SSL3_AD_ILLEGAL_PARAMETER:
+      return "illegal parameter";
+
+    case TLS1_AD_DECRYPTION_FAILED:
+      return "decryption failed";
+
+    case TLS1_AD_RECORD_OVERFLOW:
+      return "record overflow";
+
+    case TLS1_AD_UNKNOWN_CA:
+      return "unknown CA";
+
+    case TLS1_AD_ACCESS_DENIED:
+      return "access denied";
+
+    case TLS1_AD_DECODE_ERROR:
+      return "decode error";
+
+    case TLS1_AD_DECRYPT_ERROR:
+      return "decrypt error";
+
+    case TLS1_AD_EXPORT_RESTRICTION:
+      return "export restriction";
+
+    case TLS1_AD_PROTOCOL_VERSION:
+      return "protocol version";
+
+    case TLS1_AD_INSUFFICIENT_SECURITY:
+      return "insufficient security";
+
+    case TLS1_AD_INTERNAL_ERROR:
+      return "internal error";
+
+    case SSL3_AD_INAPPROPRIATE_FALLBACK:
+      return "inappropriate fallback";
+
+    case TLS1_AD_USER_CANCELLED:
+      return "user canceled";
+
+    case TLS1_AD_NO_RENEGOTIATION:
+      return "no renegotiation";
+
+    case TLS1_AD_UNSUPPORTED_EXTENSION:
+      return "unsupported extension";
+
+    case TLS1_AD_CERTIFICATE_UNOBTAINABLE:
+      return "certificate unobtainable";
+
+    case TLS1_AD_UNRECOGNIZED_NAME:
+      return "unrecognized name";
+
+    case TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
+      return "bad certificate status response";
+
+    case TLS1_AD_BAD_CERTIFICATE_HASH_VALUE:
+      return "bad certificate hash value";
+
+    case TLS1_AD_UNKNOWN_PSK_IDENTITY:
+      return "unknown PSK identity";
+
+    case TLS1_AD_CERTIFICATE_REQUIRED:
+      return "certificate required";
+
+    default:
+      return "unknown";
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc.grpc_back
new file mode 100644
index 0000000..e1677f0
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_stat.cc.grpc_back	
@@ -0,0 +1,224 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+
+#include "internal.h"
+
+
+const char *SSL_state_string_long(const SSL *ssl) {
+  if (ssl->s3->hs == nullptr) {
+    return "SSL negotiation finished successfully";
+  }
+
+  return ssl->server ? ssl_server_handshake_state(ssl->s3->hs.get())
+                     : ssl_client_handshake_state(ssl->s3->hs.get());
+}
+
+const char *SSL_state_string(const SSL *ssl) {
+  return "!!!!!!";
+}
+
+const char *SSL_alert_type_string_long(int value) {
+  value >>= 8;
+  if (value == SSL3_AL_WARNING) {
+    return "warning";
+  } else if (value == SSL3_AL_FATAL) {
+    return "fatal";
+  }
+
+  return "unknown";
+}
+
+const char *SSL_alert_type_string(int value) {
+  return "!";
+}
+
+const char *SSL_alert_desc_string(int value) {
+  return "!!";
+}
+
+const char *SSL_alert_desc_string_long(int value) {
+  switch (value & 0xff) {
+    case SSL3_AD_CLOSE_NOTIFY:
+      return "close notify";
+
+    case SSL3_AD_UNEXPECTED_MESSAGE:
+      return "unexpected_message";
+
+    case SSL3_AD_BAD_RECORD_MAC:
+      return "bad record mac";
+
+    case SSL3_AD_DECOMPRESSION_FAILURE:
+      return "decompression failure";
+
+    case SSL3_AD_HANDSHAKE_FAILURE:
+      return "handshake failure";
+
+    case SSL3_AD_NO_CERTIFICATE:
+      return "no certificate";
+
+    case SSL3_AD_BAD_CERTIFICATE:
+      return "bad certificate";
+
+    case SSL3_AD_UNSUPPORTED_CERTIFICATE:
+      return "unsupported certificate";
+
+    case SSL3_AD_CERTIFICATE_REVOKED:
+      return "certificate revoked";
+
+    case SSL3_AD_CERTIFICATE_EXPIRED:
+      return "certificate expired";
+
+    case SSL3_AD_CERTIFICATE_UNKNOWN:
+      return "certificate unknown";
+
+    case SSL3_AD_ILLEGAL_PARAMETER:
+      return "illegal parameter";
+
+    case TLS1_AD_DECRYPTION_FAILED:
+      return "decryption failed";
+
+    case TLS1_AD_RECORD_OVERFLOW:
+      return "record overflow";
+
+    case TLS1_AD_UNKNOWN_CA:
+      return "unknown CA";
+
+    case TLS1_AD_ACCESS_DENIED:
+      return "access denied";
+
+    case TLS1_AD_DECODE_ERROR:
+      return "decode error";
+
+    case TLS1_AD_DECRYPT_ERROR:
+      return "decrypt error";
+
+    case TLS1_AD_EXPORT_RESTRICTION:
+      return "export restriction";
+
+    case TLS1_AD_PROTOCOL_VERSION:
+      return "protocol version";
+
+    case TLS1_AD_INSUFFICIENT_SECURITY:
+      return "insufficient security";
+
+    case TLS1_AD_INTERNAL_ERROR:
+      return "internal error";
+
+    case SSL3_AD_INAPPROPRIATE_FALLBACK:
+      return "inappropriate fallback";
+
+    case TLS1_AD_USER_CANCELLED:
+      return "user canceled";
+
+    case TLS1_AD_NO_RENEGOTIATION:
+      return "no renegotiation";
+
+    case TLS1_AD_UNSUPPORTED_EXTENSION:
+      return "unsupported extension";
+
+    case TLS1_AD_CERTIFICATE_UNOBTAINABLE:
+      return "certificate unobtainable";
+
+    case TLS1_AD_UNRECOGNIZED_NAME:
+      return "unrecognized name";
+
+    case TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
+      return "bad certificate status response";
+
+    case TLS1_AD_BAD_CERTIFICATE_HASH_VALUE:
+      return "bad certificate hash value";
+
+    case TLS1_AD_UNKNOWN_PSK_IDENTITY:
+      return "unknown PSK identity";
+
+    case TLS1_AD_CERTIFICATE_REQUIRED:
+      return "certificate required";
+
+    default:
+      return "unknown";
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc
new file mode 100644
index 0000000..e5e3fff
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc	
@@ -0,0 +1,277 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <openssl_grpc/buf.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSLTranscript::SSLTranscript() {}
+
+SSLTranscript::~SSLTranscript() {}
+
+bool SSLTranscript::Init() {
+  buffer_.reset(BUF_MEM_new());
+  if (!buffer_) {
+    return false;
+  }
+
+  hash_.Reset();
+  return true;
+}
+
+// InitDigestWithData calls |EVP_DigestInit_ex| on |ctx| with |md| and then
+// writes the data in |buf| to it.
+static bool InitDigestWithData(EVP_MD_CTX *ctx, const EVP_MD *md,
+                               const BUF_MEM *buf) {
+  if (!EVP_DigestInit_ex(ctx, md, NULL)) {
+    return false;
+  }
+  EVP_DigestUpdate(ctx, buf->data, buf->length);
+  return true;
+}
+
+bool SSLTranscript::InitHash(uint16_t version, const SSL_CIPHER *cipher) {
+  const EVP_MD *md = ssl_get_handshake_digest(version, cipher);
+  return InitDigestWithData(hash_.get(), md, buffer_.get());
+}
+
+void SSLTranscript::FreeBuffer() {
+  buffer_.reset();
+}
+
+size_t SSLTranscript::DigestLen() const {
+  return EVP_MD_size(Digest());
+}
+
+const EVP_MD *SSLTranscript::Digest() const {
+  return EVP_MD_CTX_md(hash_.get());
+}
+
+bool SSLTranscript::UpdateForHelloRetryRequest() {
+  if (buffer_) {
+    buffer_->length = 0;
+  }
+
+  uint8_t old_hash[EVP_MAX_MD_SIZE];
+  size_t hash_len;
+  if (!GetHash(old_hash, &hash_len)) {
+    return false;
+  }
+  const uint8_t header[4] = {SSL3_MT_MESSAGE_HASH, 0, 0,
+                             static_cast<uint8_t>(hash_len)};
+  if (!EVP_DigestInit_ex(hash_.get(), Digest(), nullptr) ||
+      !Update(header) ||
+      !Update(MakeConstSpan(old_hash, hash_len))) {
+    return false;
+  }
+  return true;
+}
+
+bool SSLTranscript::CopyToHashContext(EVP_MD_CTX *ctx, const EVP_MD *digest) {
+  const EVP_MD *transcript_digest = Digest();
+  if (transcript_digest != nullptr &&
+      EVP_MD_type(transcript_digest) == EVP_MD_type(digest)) {
+    return EVP_MD_CTX_copy_ex(ctx, hash_.get());
+  }
+
+  if (buffer_) {
+    return EVP_DigestInit_ex(ctx, digest, nullptr) &&
+           EVP_DigestUpdate(ctx, buffer_->data, buffer_->length);
+  }
+
+  OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+  return false;
+}
+
+bool SSLTranscript::Update(Span<const uint8_t> in) {
+  // Depending on the state of the handshake, either the handshake buffer may be
+  // active, the rolling hash, or both.
+  if (buffer_ &&
+      !BUF_MEM_append(buffer_.get(), in.data(), in.size())) {
+    return false;
+  }
+
+  if (EVP_MD_CTX_md(hash_.get()) != NULL) {
+    EVP_DigestUpdate(hash_.get(), in.data(), in.size());
+  }
+
+  return true;
+}
+
+bool SSLTranscript::GetHash(uint8_t *out, size_t *out_len) {
+  ScopedEVP_MD_CTX ctx;
+  unsigned len;
+  if (!EVP_MD_CTX_copy_ex(ctx.get(), hash_.get()) ||
+      !EVP_DigestFinal_ex(ctx.get(), out, &len)) {
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+bool SSLTranscript::GetFinishedMAC(uint8_t *out, size_t *out_len,
+                                   const SSL_SESSION *session,
+                                   bool from_server) {
+  static const char kClientLabel[] = "client finished";
+  static const char kServerLabel[] = "server finished";
+  auto label = from_server
+                   ? MakeConstSpan(kServerLabel, sizeof(kServerLabel) - 1)
+                   : MakeConstSpan(kClientLabel, sizeof(kClientLabel) - 1);
+
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!GetHash(digest, &digest_len)) {
+    return false;
+  }
+
+  static const size_t kFinishedLen = 12;
+  if (!tls1_prf(Digest(), MakeSpan(out, kFinishedLen),
+                MakeConstSpan(session->master_key, session->master_key_length),
+                label, MakeConstSpan(digest, digest_len), {})) {
+    return false;
+  }
+
+  *out_len = kFinishedLen;
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc.grpc_back
new file mode 100644
index 0000000..c1cef2b
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_transcript.cc.grpc_back	
@@ -0,0 +1,277 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <openssl/buf.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+SSLTranscript::SSLTranscript() {}
+
+SSLTranscript::~SSLTranscript() {}
+
+bool SSLTranscript::Init() {
+  buffer_.reset(BUF_MEM_new());
+  if (!buffer_) {
+    return false;
+  }
+
+  hash_.Reset();
+  return true;
+}
+
+// InitDigestWithData calls |EVP_DigestInit_ex| on |ctx| with |md| and then
+// writes the data in |buf| to it.
+static bool InitDigestWithData(EVP_MD_CTX *ctx, const EVP_MD *md,
+                               const BUF_MEM *buf) {
+  if (!EVP_DigestInit_ex(ctx, md, NULL)) {
+    return false;
+  }
+  EVP_DigestUpdate(ctx, buf->data, buf->length);
+  return true;
+}
+
+bool SSLTranscript::InitHash(uint16_t version, const SSL_CIPHER *cipher) {
+  const EVP_MD *md = ssl_get_handshake_digest(version, cipher);
+  return InitDigestWithData(hash_.get(), md, buffer_.get());
+}
+
+void SSLTranscript::FreeBuffer() {
+  buffer_.reset();
+}
+
+size_t SSLTranscript::DigestLen() const {
+  return EVP_MD_size(Digest());
+}
+
+const EVP_MD *SSLTranscript::Digest() const {
+  return EVP_MD_CTX_md(hash_.get());
+}
+
+bool SSLTranscript::UpdateForHelloRetryRequest() {
+  if (buffer_) {
+    buffer_->length = 0;
+  }
+
+  uint8_t old_hash[EVP_MAX_MD_SIZE];
+  size_t hash_len;
+  if (!GetHash(old_hash, &hash_len)) {
+    return false;
+  }
+  const uint8_t header[4] = {SSL3_MT_MESSAGE_HASH, 0, 0,
+                             static_cast<uint8_t>(hash_len)};
+  if (!EVP_DigestInit_ex(hash_.get(), Digest(), nullptr) ||
+      !Update(header) ||
+      !Update(MakeConstSpan(old_hash, hash_len))) {
+    return false;
+  }
+  return true;
+}
+
+bool SSLTranscript::CopyToHashContext(EVP_MD_CTX *ctx, const EVP_MD *digest) {
+  const EVP_MD *transcript_digest = Digest();
+  if (transcript_digest != nullptr &&
+      EVP_MD_type(transcript_digest) == EVP_MD_type(digest)) {
+    return EVP_MD_CTX_copy_ex(ctx, hash_.get());
+  }
+
+  if (buffer_) {
+    return EVP_DigestInit_ex(ctx, digest, nullptr) &&
+           EVP_DigestUpdate(ctx, buffer_->data, buffer_->length);
+  }
+
+  OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+  return false;
+}
+
+bool SSLTranscript::Update(Span<const uint8_t> in) {
+  // Depending on the state of the handshake, either the handshake buffer may be
+  // active, the rolling hash, or both.
+  if (buffer_ &&
+      !BUF_MEM_append(buffer_.get(), in.data(), in.size())) {
+    return false;
+  }
+
+  if (EVP_MD_CTX_md(hash_.get()) != NULL) {
+    EVP_DigestUpdate(hash_.get(), in.data(), in.size());
+  }
+
+  return true;
+}
+
+bool SSLTranscript::GetHash(uint8_t *out, size_t *out_len) {
+  ScopedEVP_MD_CTX ctx;
+  unsigned len;
+  if (!EVP_MD_CTX_copy_ex(ctx.get(), hash_.get()) ||
+      !EVP_DigestFinal_ex(ctx.get(), out, &len)) {
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+bool SSLTranscript::GetFinishedMAC(uint8_t *out, size_t *out_len,
+                                   const SSL_SESSION *session,
+                                   bool from_server) {
+  static const char kClientLabel[] = "client finished";
+  static const char kServerLabel[] = "server finished";
+  auto label = from_server
+                   ? MakeConstSpan(kServerLabel, sizeof(kServerLabel) - 1)
+                   : MakeConstSpan(kClientLabel, sizeof(kClientLabel) - 1);
+
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!GetHash(digest, &digest_len)) {
+    return false;
+  }
+
+  static const size_t kFinishedLen = 12;
+  if (!tls1_prf(Digest(), MakeSpan(out, kFinishedLen),
+                MakeConstSpan(session->master_key, session->master_key_length),
+                label, MakeConstSpan(digest, digest_len), {})) {
+    return false;
+  }
+
+  *out_len = kFinishedLen;
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc
new file mode 100644
index 0000000..a4b064e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc	
@@ -0,0 +1,394 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_protocol_version_from_wire(uint16_t *out, uint16_t version) {
+  switch (version) {
+    case TLS1_VERSION:
+    case TLS1_1_VERSION:
+    case TLS1_2_VERSION:
+    case TLS1_3_VERSION:
+      *out = version;
+      return true;
+
+    case DTLS1_VERSION:
+      // DTLS 1.0 is analogous to TLS 1.1, not TLS 1.0.
+      *out = TLS1_1_VERSION;
+      return true;
+
+    case DTLS1_2_VERSION:
+      *out = TLS1_2_VERSION;
+      return true;
+
+    default:
+      return false;
+  }
+}
+
+// The follow arrays are the supported versions for TLS and DTLS, in order of
+// decreasing preference.
+
+static const uint16_t kTLSVersions[] = {
+    TLS1_3_VERSION,
+    TLS1_2_VERSION,
+    TLS1_1_VERSION,
+    TLS1_VERSION,
+};
+
+static const uint16_t kDTLSVersions[] = {
+    DTLS1_2_VERSION,
+    DTLS1_VERSION,
+};
+
+static Span<const uint16_t> get_method_versions(
+    const SSL_PROTOCOL_METHOD *method) {
+  return method->is_dtls ? Span<const uint16_t>(kDTLSVersions)
+                         : Span<const uint16_t>(kTLSVersions);
+}
+
+bool ssl_method_supports_version(const SSL_PROTOCOL_METHOD *method,
+                                 uint16_t version) {
+  for (uint16_t supported : get_method_versions(method)) {
+    if (supported == version) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// The following functions map between API versions and wire versions. The
+// public API works on wire versions.
+
+static const char *ssl_version_to_string(uint16_t version) {
+  switch (version) {
+    case TLS1_3_VERSION:
+      return "TLSv1.3";
+
+    case TLS1_2_VERSION:
+      return "TLSv1.2";
+
+    case TLS1_1_VERSION:
+      return "TLSv1.1";
+
+    case TLS1_VERSION:
+      return "TLSv1";
+
+    case DTLS1_VERSION:
+      return "DTLSv1";
+
+    case DTLS1_2_VERSION:
+      return "DTLSv1.2";
+
+    default:
+      return "unknown";
+  }
+}
+
+static uint16_t wire_version_to_api(uint16_t version) {
+  return version;
+}
+
+// api_version_to_wire maps |version| to some representative wire version.
+static bool api_version_to_wire(uint16_t *out, uint16_t version) {
+  // Check it is a real protocol version.
+  uint16_t unused;
+  if (!ssl_protocol_version_from_wire(&unused, version)) {
+    return false;
+  }
+
+  *out = version;
+  return true;
+}
+
+static bool set_version_bound(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                              uint16_t version) {
+  if (!api_version_to_wire(&version, version) ||
+      !ssl_method_supports_version(method, version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_SSL_VERSION);
+    return false;
+  }
+
+  *out = version;
+  return true;
+}
+
+static bool set_min_version(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                            uint16_t version) {
+  // Zero is interpreted as the default minimum version.
+  if (version == 0) {
+    *out = method->is_dtls ? DTLS1_VERSION : TLS1_VERSION;
+    return true;
+  }
+
+  return set_version_bound(method, out, version);
+}
+
+static bool set_max_version(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                            uint16_t version) {
+  // Zero is interpreted as the default maximum version.
+  if (version == 0) {
+    *out = method->is_dtls ? DTLS1_2_VERSION : TLS1_3_VERSION;
+    return true;
+  }
+
+  return set_version_bound(method, out, version);
+}
+
+const struct {
+  uint16_t version;
+  uint32_t flag;
+} kProtocolVersions[] = {
+    {TLS1_VERSION, SSL_OP_NO_TLSv1},
+    {TLS1_1_VERSION, SSL_OP_NO_TLSv1_1},
+    {TLS1_2_VERSION, SSL_OP_NO_TLSv1_2},
+    {TLS1_3_VERSION, SSL_OP_NO_TLSv1_3},
+};
+
+bool ssl_get_version_range(const SSL_HANDSHAKE *hs, uint16_t *out_min_version,
+                           uint16_t *out_max_version) {
+  // For historical reasons, |SSL_OP_NO_DTLSv1| aliases |SSL_OP_NO_TLSv1|, but
+  // DTLS 1.0 should be mapped to TLS 1.1.
+  uint32_t options = hs->ssl->options;
+  if (SSL_is_dtls(hs->ssl)) {
+    options &= ~SSL_OP_NO_TLSv1_1;
+    if (options & SSL_OP_NO_DTLSv1) {
+      options |= SSL_OP_NO_TLSv1_1;
+    }
+  }
+
+  uint16_t min_version, max_version;
+  if (!ssl_protocol_version_from_wire(&min_version,
+                                      hs->config->conf_min_version) ||
+      !ssl_protocol_version_from_wire(&max_version,
+                                      hs->config->conf_max_version)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // QUIC requires TLS 1.3.
+  if (hs->ssl->quic_method && min_version < TLS1_3_VERSION) {
+    min_version = TLS1_3_VERSION;
+  }
+
+  // OpenSSL's API for controlling versions entails blacklisting individual
+  // protocols. This has two problems. First, on the client, the protocol can
+  // only express a contiguous range of versions. Second, a library consumer
+  // trying to set a maximum version cannot disable protocol versions that get
+  // added in a future version of the library.
+  //
+  // To account for both of these, OpenSSL interprets the client-side bitmask
+  // as a min/max range by picking the lowest contiguous non-empty range of
+  // enabled protocols. Note that this means it is impossible to set a maximum
+  // version of the higest supported TLS version in a future-proof way.
+  bool any_enabled = false;
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kProtocolVersions); i++) {
+    // Only look at the versions already enabled.
+    if (min_version > kProtocolVersions[i].version) {
+      continue;
+    }
+    if (max_version < kProtocolVersions[i].version) {
+      break;
+    }
+
+    if (!(options & kProtocolVersions[i].flag)) {
+      // The minimum version is the first enabled version.
+      if (!any_enabled) {
+        any_enabled = true;
+        min_version = kProtocolVersions[i].version;
+      }
+      continue;
+    }
+
+    // If there is a disabled version after the first enabled one, all versions
+    // after it are implicitly disabled.
+    if (any_enabled) {
+      max_version = kProtocolVersions[i-1].version;
+      break;
+    }
+  }
+
+  if (!any_enabled) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SUPPORTED_VERSIONS_ENABLED);
+    return false;
+  }
+
+  *out_min_version = min_version;
+  *out_max_version = max_version;
+  return true;
+}
+
+static uint16_t ssl_version(const SSL *ssl) {
+  // In early data, we report the predicted version.
+  if (SSL_in_early_data(ssl) && !ssl->server) {
+    return ssl->s3->hs->early_session->ssl_version;
+  }
+  return ssl->version;
+}
+
+uint16_t ssl_protocol_version(const SSL *ssl) {
+  assert(ssl->s3->have_version);
+  uint16_t version;
+  if (!ssl_protocol_version_from_wire(&version, ssl->version)) {
+    // |ssl->version| will always be set to a valid version.
+    assert(0);
+    return 0;
+  }
+
+  return version;
+}
+
+bool ssl_supports_version(SSL_HANDSHAKE *hs, uint16_t version) {
+  SSL *const ssl = hs->ssl;
+  uint16_t protocol_version;
+  if (!ssl_method_supports_version(ssl->method, version) ||
+      !ssl_protocol_version_from_wire(&protocol_version, version) ||
+      hs->min_version > protocol_version ||
+      protocol_version > hs->max_version) {
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_add_supported_versions(SSL_HANDSHAKE *hs, CBB *cbb) {
+  for (uint16_t version : get_method_versions(hs->ssl->method)) {
+    if (ssl_supports_version(hs, version) &&
+        !CBB_add_u16(cbb, version)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool ssl_negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                           uint16_t *out_version, const CBS *peer_versions) {
+  for (uint16_t version : get_method_versions(hs->ssl->method)) {
+    if (!ssl_supports_version(hs, version)) {
+      continue;
+    }
+
+    // JDK 11, prior to 11.0.2, has a buggy TLS 1.3 implementation which fails
+    // to send SNI when offering 1.3 sessions. Disable TLS 1.3 for such
+    // clients. We apply this logic here rather than |ssl_supports_version| so
+    // the downgrade signal continues to query the true capabilities. (The
+    // workaround is a limitation of the peer's capabilities rather than our
+    // own.)
+    //
+    // See https://bugs.openjdk.java.net/browse/JDK-8211806.
+    if (version == TLS1_3_VERSION && hs->apply_jdk11_workaround) {
+      continue;
+    }
+
+    CBS copy = *peer_versions;
+    while (CBS_len(&copy) != 0) {
+      uint16_t peer_version;
+      if (!CBS_get_u16(&copy, &peer_version)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        *out_alert = SSL_AD_DECODE_ERROR;
+        return false;
+      }
+
+      if (peer_version == version) {
+        *out_version = version;
+        return true;
+      }
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_PROTOCOL);
+  *out_alert = SSL_AD_PROTOCOL_VERSION;
+  return false;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) {
+  return set_min_version(ctx->method, &ctx->conf_min_version, version);
+}
+
+int SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) {
+  return set_max_version(ctx->method, &ctx->conf_max_version, version);
+}
+
+uint16_t SSL_CTX_get_min_proto_version(const SSL_CTX *ctx) {
+  return ctx->conf_min_version;
+}
+
+uint16_t SSL_CTX_get_max_proto_version(const SSL_CTX *ctx) {
+  return ctx->conf_max_version;
+}
+
+int SSL_set_min_proto_version(SSL *ssl, uint16_t version) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_min_version(ssl->method, &ssl->config->conf_min_version, version);
+}
+
+int SSL_set_max_proto_version(SSL *ssl, uint16_t version) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_max_version(ssl->method, &ssl->config->conf_max_version, version);
+}
+
+uint16_t SSL_get_min_proto_version(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->conf_min_version;
+}
+
+uint16_t SSL_get_max_proto_version(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->conf_max_version;
+}
+
+int SSL_version(const SSL *ssl) {
+  return wire_version_to_api(ssl_version(ssl));
+}
+
+const char *SSL_get_version(const SSL *ssl) {
+  return ssl_version_to_string(ssl_version(ssl));
+}
+
+const char *SSL_SESSION_get_version(const SSL_SESSION *session) {
+  return ssl_version_to_string(session->ssl_version);
+}
+
+uint16_t SSL_SESSION_get_protocol_version(const SSL_SESSION *session) {
+  return wire_version_to_api(session->ssl_version);
+}
+
+int SSL_SESSION_set_protocol_version(SSL_SESSION *session, uint16_t version) {
+  // This picks a representative TLS 1.3 version, but this API should only be
+  // used on unit test sessions anyway.
+  return api_version_to_wire(&session->ssl_version, version);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc.grpc_back
new file mode 100644
index 0000000..d95aeb3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_versions.cc.grpc_back	
@@ -0,0 +1,394 @@
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool ssl_protocol_version_from_wire(uint16_t *out, uint16_t version) {
+  switch (version) {
+    case TLS1_VERSION:
+    case TLS1_1_VERSION:
+    case TLS1_2_VERSION:
+    case TLS1_3_VERSION:
+      *out = version;
+      return true;
+
+    case DTLS1_VERSION:
+      // DTLS 1.0 is analogous to TLS 1.1, not TLS 1.0.
+      *out = TLS1_1_VERSION;
+      return true;
+
+    case DTLS1_2_VERSION:
+      *out = TLS1_2_VERSION;
+      return true;
+
+    default:
+      return false;
+  }
+}
+
+// The follow arrays are the supported versions for TLS and DTLS, in order of
+// decreasing preference.
+
+static const uint16_t kTLSVersions[] = {
+    TLS1_3_VERSION,
+    TLS1_2_VERSION,
+    TLS1_1_VERSION,
+    TLS1_VERSION,
+};
+
+static const uint16_t kDTLSVersions[] = {
+    DTLS1_2_VERSION,
+    DTLS1_VERSION,
+};
+
+static Span<const uint16_t> get_method_versions(
+    const SSL_PROTOCOL_METHOD *method) {
+  return method->is_dtls ? Span<const uint16_t>(kDTLSVersions)
+                         : Span<const uint16_t>(kTLSVersions);
+}
+
+bool ssl_method_supports_version(const SSL_PROTOCOL_METHOD *method,
+                                 uint16_t version) {
+  for (uint16_t supported : get_method_versions(method)) {
+    if (supported == version) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// The following functions map between API versions and wire versions. The
+// public API works on wire versions.
+
+static const char *ssl_version_to_string(uint16_t version) {
+  switch (version) {
+    case TLS1_3_VERSION:
+      return "TLSv1.3";
+
+    case TLS1_2_VERSION:
+      return "TLSv1.2";
+
+    case TLS1_1_VERSION:
+      return "TLSv1.1";
+
+    case TLS1_VERSION:
+      return "TLSv1";
+
+    case DTLS1_VERSION:
+      return "DTLSv1";
+
+    case DTLS1_2_VERSION:
+      return "DTLSv1.2";
+
+    default:
+      return "unknown";
+  }
+}
+
+static uint16_t wire_version_to_api(uint16_t version) {
+  return version;
+}
+
+// api_version_to_wire maps |version| to some representative wire version.
+static bool api_version_to_wire(uint16_t *out, uint16_t version) {
+  // Check it is a real protocol version.
+  uint16_t unused;
+  if (!ssl_protocol_version_from_wire(&unused, version)) {
+    return false;
+  }
+
+  *out = version;
+  return true;
+}
+
+static bool set_version_bound(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                              uint16_t version) {
+  if (!api_version_to_wire(&version, version) ||
+      !ssl_method_supports_version(method, version)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_SSL_VERSION);
+    return false;
+  }
+
+  *out = version;
+  return true;
+}
+
+static bool set_min_version(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                            uint16_t version) {
+  // Zero is interpreted as the default minimum version.
+  if (version == 0) {
+    *out = method->is_dtls ? DTLS1_VERSION : TLS1_VERSION;
+    return true;
+  }
+
+  return set_version_bound(method, out, version);
+}
+
+static bool set_max_version(const SSL_PROTOCOL_METHOD *method, uint16_t *out,
+                            uint16_t version) {
+  // Zero is interpreted as the default maximum version.
+  if (version == 0) {
+    *out = method->is_dtls ? DTLS1_2_VERSION : TLS1_3_VERSION;
+    return true;
+  }
+
+  return set_version_bound(method, out, version);
+}
+
+const struct {
+  uint16_t version;
+  uint32_t flag;
+} kProtocolVersions[] = {
+    {TLS1_VERSION, SSL_OP_NO_TLSv1},
+    {TLS1_1_VERSION, SSL_OP_NO_TLSv1_1},
+    {TLS1_2_VERSION, SSL_OP_NO_TLSv1_2},
+    {TLS1_3_VERSION, SSL_OP_NO_TLSv1_3},
+};
+
+bool ssl_get_version_range(const SSL_HANDSHAKE *hs, uint16_t *out_min_version,
+                           uint16_t *out_max_version) {
+  // For historical reasons, |SSL_OP_NO_DTLSv1| aliases |SSL_OP_NO_TLSv1|, but
+  // DTLS 1.0 should be mapped to TLS 1.1.
+  uint32_t options = hs->ssl->options;
+  if (SSL_is_dtls(hs->ssl)) {
+    options &= ~SSL_OP_NO_TLSv1_1;
+    if (options & SSL_OP_NO_DTLSv1) {
+      options |= SSL_OP_NO_TLSv1_1;
+    }
+  }
+
+  uint16_t min_version, max_version;
+  if (!ssl_protocol_version_from_wire(&min_version,
+                                      hs->config->conf_min_version) ||
+      !ssl_protocol_version_from_wire(&max_version,
+                                      hs->config->conf_max_version)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // QUIC requires TLS 1.3.
+  if (hs->ssl->quic_method && min_version < TLS1_3_VERSION) {
+    min_version = TLS1_3_VERSION;
+  }
+
+  // OpenSSL's API for controlling versions entails blacklisting individual
+  // protocols. This has two problems. First, on the client, the protocol can
+  // only express a contiguous range of versions. Second, a library consumer
+  // trying to set a maximum version cannot disable protocol versions that get
+  // added in a future version of the library.
+  //
+  // To account for both of these, OpenSSL interprets the client-side bitmask
+  // as a min/max range by picking the lowest contiguous non-empty range of
+  // enabled protocols. Note that this means it is impossible to set a maximum
+  // version of the higest supported TLS version in a future-proof way.
+  bool any_enabled = false;
+  for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kProtocolVersions); i++) {
+    // Only look at the versions already enabled.
+    if (min_version > kProtocolVersions[i].version) {
+      continue;
+    }
+    if (max_version < kProtocolVersions[i].version) {
+      break;
+    }
+
+    if (!(options & kProtocolVersions[i].flag)) {
+      // The minimum version is the first enabled version.
+      if (!any_enabled) {
+        any_enabled = true;
+        min_version = kProtocolVersions[i].version;
+      }
+      continue;
+    }
+
+    // If there is a disabled version after the first enabled one, all versions
+    // after it are implicitly disabled.
+    if (any_enabled) {
+      max_version = kProtocolVersions[i-1].version;
+      break;
+    }
+  }
+
+  if (!any_enabled) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SUPPORTED_VERSIONS_ENABLED);
+    return false;
+  }
+
+  *out_min_version = min_version;
+  *out_max_version = max_version;
+  return true;
+}
+
+static uint16_t ssl_version(const SSL *ssl) {
+  // In early data, we report the predicted version.
+  if (SSL_in_early_data(ssl) && !ssl->server) {
+    return ssl->s3->hs->early_session->ssl_version;
+  }
+  return ssl->version;
+}
+
+uint16_t ssl_protocol_version(const SSL *ssl) {
+  assert(ssl->s3->have_version);
+  uint16_t version;
+  if (!ssl_protocol_version_from_wire(&version, ssl->version)) {
+    // |ssl->version| will always be set to a valid version.
+    assert(0);
+    return 0;
+  }
+
+  return version;
+}
+
+bool ssl_supports_version(SSL_HANDSHAKE *hs, uint16_t version) {
+  SSL *const ssl = hs->ssl;
+  uint16_t protocol_version;
+  if (!ssl_method_supports_version(ssl->method, version) ||
+      !ssl_protocol_version_from_wire(&protocol_version, version) ||
+      hs->min_version > protocol_version ||
+      protocol_version > hs->max_version) {
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_add_supported_versions(SSL_HANDSHAKE *hs, CBB *cbb) {
+  for (uint16_t version : get_method_versions(hs->ssl->method)) {
+    if (ssl_supports_version(hs, version) &&
+        !CBB_add_u16(cbb, version)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool ssl_negotiate_version(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                           uint16_t *out_version, const CBS *peer_versions) {
+  for (uint16_t version : get_method_versions(hs->ssl->method)) {
+    if (!ssl_supports_version(hs, version)) {
+      continue;
+    }
+
+    // JDK 11, prior to 11.0.2, has a buggy TLS 1.3 implementation which fails
+    // to send SNI when offering 1.3 sessions. Disable TLS 1.3 for such
+    // clients. We apply this logic here rather than |ssl_supports_version| so
+    // the downgrade signal continues to query the true capabilities. (The
+    // workaround is a limitation of the peer's capabilities rather than our
+    // own.)
+    //
+    // See https://bugs.openjdk.java.net/browse/JDK-8211806.
+    if (version == TLS1_3_VERSION && hs->apply_jdk11_workaround) {
+      continue;
+    }
+
+    CBS copy = *peer_versions;
+    while (CBS_len(&copy) != 0) {
+      uint16_t peer_version;
+      if (!CBS_get_u16(&copy, &peer_version)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        *out_alert = SSL_AD_DECODE_ERROR;
+        return false;
+      }
+
+      if (peer_version == version) {
+        *out_version = version;
+        return true;
+      }
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNSUPPORTED_PROTOCOL);
+  *out_alert = SSL_AD_PROTOCOL_VERSION;
+  return false;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) {
+  return set_min_version(ctx->method, &ctx->conf_min_version, version);
+}
+
+int SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) {
+  return set_max_version(ctx->method, &ctx->conf_max_version, version);
+}
+
+uint16_t SSL_CTX_get_min_proto_version(const SSL_CTX *ctx) {
+  return ctx->conf_min_version;
+}
+
+uint16_t SSL_CTX_get_max_proto_version(const SSL_CTX *ctx) {
+  return ctx->conf_max_version;
+}
+
+int SSL_set_min_proto_version(SSL *ssl, uint16_t version) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_min_version(ssl->method, &ssl->config->conf_min_version, version);
+}
+
+int SSL_set_max_proto_version(SSL *ssl, uint16_t version) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_max_version(ssl->method, &ssl->config->conf_max_version, version);
+}
+
+uint16_t SSL_get_min_proto_version(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->conf_min_version;
+}
+
+uint16_t SSL_get_max_proto_version(const SSL *ssl) {
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl->config->conf_max_version;
+}
+
+int SSL_version(const SSL *ssl) {
+  return wire_version_to_api(ssl_version(ssl));
+}
+
+const char *SSL_get_version(const SSL *ssl) {
+  return ssl_version_to_string(ssl_version(ssl));
+}
+
+const char *SSL_SESSION_get_version(const SSL_SESSION *session) {
+  return ssl_version_to_string(session->ssl_version);
+}
+
+uint16_t SSL_SESSION_get_protocol_version(const SSL_SESSION *session) {
+  return wire_version_to_api(session->ssl_version);
+}
+
+int SSL_SESSION_set_protocol_version(SSL_SESSION *session, uint16_t version) {
+  // This picks a representative TLS 1.3 version, but this API should only be
+  // used on unit test sessions anyway.
+  return api_version_to_wire(&session->ssl_version, version);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc
new file mode 100644
index 0000000..c353bc6
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc	
@@ -0,0 +1,1358 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+
+#include <openssl_grpc/asn1.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/pem.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+#include <openssl_grpc/x509v3.h>
+#include <openssl_grpc/x509_vfy.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// check_ssl_x509_method asserts that |ssl| has the X509-based method
+// installed. Calling an X509-based method on an |ssl| with a different method
+// will likely misbehave and possibly crash or leak memory.
+static void check_ssl_x509_method(const SSL *ssl) {
+  assert(ssl == NULL || ssl->ctx->x509_method == &ssl_crypto_x509_method);
+}
+
+// check_ssl_ctx_x509_method acts like |check_ssl_x509_method|, but for an
+// |SSL_CTX|.
+static void check_ssl_ctx_x509_method(const SSL_CTX *ctx) {
+  assert(ctx == NULL || ctx->x509_method == &ssl_crypto_x509_method);
+}
+
+// x509_to_buffer returns a |CRYPTO_BUFFER| that contains the serialised
+// contents of |x509|.
+static UniquePtr<CRYPTO_BUFFER> x509_to_buffer(X509 *x509) {
+  uint8_t *buf = NULL;
+  int cert_len = i2d_X509(x509, &buf);
+  if (cert_len <= 0) {
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(buf, cert_len, NULL));
+  OPENSSL_free(buf);
+
+  return buffer;
+}
+
+// new_leafless_chain returns a fresh stack of buffers set to {NULL}.
+static UniquePtr<STACK_OF(CRYPTO_BUFFER)> new_leafless_chain(void) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain(sk_CRYPTO_BUFFER_new_null());
+  if (!chain ||
+      !sk_CRYPTO_BUFFER_push(chain.get(), nullptr)) {
+    return nullptr;
+  }
+
+  return chain;
+}
+
+// ssl_cert_set_chain sets elements 1.. of |cert->chain| to the serialised
+// forms of elements of |chain|. It returns one on success or zero on error, in
+// which case no change to |cert->chain| is made. It preverses the existing
+// leaf from |cert->chain|, if any.
+static bool ssl_cert_set_chain(CERT *cert, STACK_OF(X509) *chain) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> new_chain;
+
+  if (cert->chain != nullptr) {
+    new_chain.reset(sk_CRYPTO_BUFFER_new_null());
+    if (!new_chain) {
+      return false;
+    }
+
+    // |leaf| might be NULL if it's a “leafless” chain.
+    CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+    if (!PushToStack(new_chain.get(), UpRef(leaf))) {
+      return false;
+    }
+  }
+
+  for (X509 *x509 : chain) {
+    if (!new_chain) {
+      new_chain = new_leafless_chain();
+      if (!new_chain) {
+        return false;
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
+    if (!buffer ||
+        !PushToStack(new_chain.get(), std::move(buffer))) {
+      return false;
+    }
+  }
+
+  cert->chain = std::move(new_chain);
+  return true;
+}
+
+static void ssl_crypto_x509_cert_flush_cached_leaf(CERT *cert) {
+  X509_free(cert->x509_leaf);
+  cert->x509_leaf = nullptr;
+}
+
+static void ssl_crypto_x509_cert_flush_cached_chain(CERT *cert) {
+  sk_X509_pop_free(cert->x509_chain, X509_free);
+  cert->x509_chain = nullptr;
+}
+
+static bool ssl_crypto_x509_check_client_CA_list(
+    STACK_OF(CRYPTO_BUFFER) *names) {
+  for (const CRYPTO_BUFFER *buffer : names) {
+    const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
+    UniquePtr<X509_NAME> name(
+        d2i_X509_NAME(nullptr, &inp, CRYPTO_BUFFER_len(buffer)));
+    if (name == nullptr ||
+        inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static void ssl_crypto_x509_cert_clear(CERT *cert) {
+  ssl_crypto_x509_cert_flush_cached_leaf(cert);
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+
+  X509_free(cert->x509_stash);
+  cert->x509_stash = nullptr;
+}
+
+static void ssl_crypto_x509_cert_free(CERT *cert) {
+  ssl_crypto_x509_cert_clear(cert);
+  X509_STORE_free(cert->verify_store);
+}
+
+static void ssl_crypto_x509_cert_dup(CERT *new_cert, const CERT *cert) {
+  if (cert->verify_store != nullptr) {
+    X509_STORE_up_ref(cert->verify_store);
+    new_cert->verify_store = cert->verify_store;
+  }
+}
+
+static bool ssl_crypto_x509_session_cache_objects(SSL_SESSION *sess) {
+  bssl::UniquePtr<STACK_OF(X509)> chain, chain_without_leaf;
+  if (sk_CRYPTO_BUFFER_num(sess->certs.get()) > 0) {
+    chain.reset(sk_X509_new_null());
+    if (!chain) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    if (sess->is_server) {
+      // chain_without_leaf is only needed for server sessions. See
+      // |SSL_get_peer_cert_chain|.
+      chain_without_leaf.reset(sk_X509_new_null());
+      if (!chain_without_leaf) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return false;
+      }
+    }
+  }
+
+  bssl::UniquePtr<X509> leaf;
+  for (CRYPTO_BUFFER *cert : sess->certs.get()) {
+    UniquePtr<X509> x509(X509_parse_from_buffer(cert));
+    if (!x509) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+    if (leaf == nullptr) {
+      leaf = UpRef(x509);
+    } else if (chain_without_leaf &&
+               !PushToStack(chain_without_leaf.get(), UpRef(x509))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    if (!PushToStack(chain.get(), std::move(x509))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  sk_X509_pop_free(sess->x509_chain, X509_free);
+  sess->x509_chain = chain.release();
+
+  sk_X509_pop_free(sess->x509_chain_without_leaf, X509_free);
+  sess->x509_chain_without_leaf = chain_without_leaf.release();
+
+  X509_free(sess->x509_peer);
+  sess->x509_peer = leaf.release();
+  return true;
+}
+
+static bool ssl_crypto_x509_session_dup(SSL_SESSION *new_session,
+                                        const SSL_SESSION *session) {
+  new_session->x509_peer = UpRef(session->x509_peer).release();
+  if (session->x509_chain != nullptr) {
+    new_session->x509_chain = X509_chain_up_ref(session->x509_chain);
+    if (new_session->x509_chain == nullptr) {
+      return false;
+    }
+  }
+  if (session->x509_chain_without_leaf != nullptr) {
+    new_session->x509_chain_without_leaf =
+        X509_chain_up_ref(session->x509_chain_without_leaf);
+    if (new_session->x509_chain_without_leaf == nullptr) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static void ssl_crypto_x509_session_clear(SSL_SESSION *session) {
+  X509_free(session->x509_peer);
+  session->x509_peer = nullptr;
+  sk_X509_pop_free(session->x509_chain, X509_free);
+  session->x509_chain = nullptr;
+  sk_X509_pop_free(session->x509_chain_without_leaf, X509_free);
+  session->x509_chain_without_leaf = nullptr;
+}
+
+static bool ssl_crypto_x509_session_verify_cert_chain(SSL_SESSION *session,
+                                                      SSL_HANDSHAKE *hs,
+                                                      uint8_t *out_alert) {
+  *out_alert = SSL_AD_INTERNAL_ERROR;
+  STACK_OF(X509) *const cert_chain = session->x509_chain;
+  if (cert_chain == nullptr || sk_X509_num(cert_chain) == 0) {
+    return false;
+  }
+
+  SSL_CTX *ssl_ctx = hs->ssl->ctx.get();
+  X509_STORE *verify_store = ssl_ctx->cert_store;
+  if (hs->config->cert->verify_store != nullptr) {
+    verify_store = hs->config->cert->verify_store;
+  }
+
+  X509 *leaf = sk_X509_value(cert_chain, 0);
+  ScopedX509_STORE_CTX ctx;
+  if (!X509_STORE_CTX_init(ctx.get(), verify_store, leaf, cert_chain) ||
+      !X509_STORE_CTX_set_ex_data(
+          ctx.get(), SSL_get_ex_data_X509_STORE_CTX_idx(), hs->ssl) ||
+      // We need to inherit the verify parameters. These can be determined by
+      // the context: if its a server it will verify SSL client certificates or
+      // vice versa.
+      !X509_STORE_CTX_set_default(
+          ctx.get(), hs->ssl->server ? "ssl_client" : "ssl_server") ||
+      // Anything non-default in "param" should overwrite anything in the ctx.
+      !X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(ctx.get()),
+                              hs->config->param)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  if (hs->config->verify_callback) {
+    X509_STORE_CTX_set_verify_cb(ctx.get(), hs->config->verify_callback);
+  }
+
+  int verify_ret;
+  if (ssl_ctx->app_verify_callback != nullptr) {
+    verify_ret =
+        ssl_ctx->app_verify_callback(ctx.get(), ssl_ctx->app_verify_arg);
+  } else {
+    verify_ret = X509_verify_cert(ctx.get());
+  }
+
+  session->verify_result = ctx->error;
+
+  // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
+  if (verify_ret <= 0 && hs->config->verify_mode != SSL_VERIFY_NONE) {
+    *out_alert = SSL_alert_from_verify_result(ctx->error);
+    return false;
+  }
+
+  ERR_clear_error();
+  return true;
+}
+
+static void ssl_crypto_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {
+  sk_X509_NAME_pop_free(hs->cached_x509_ca_names, X509_NAME_free);
+  hs->cached_x509_ca_names = nullptr;
+}
+
+static bool ssl_crypto_x509_ssl_new(SSL_HANDSHAKE *hs) {
+  hs->config->param = X509_VERIFY_PARAM_new();
+  if (hs->config->param == nullptr) {
+    return false;
+  }
+  X509_VERIFY_PARAM_inherit(hs->config->param, hs->ssl->ctx->param);
+  return true;
+}
+
+static void ssl_crypto_x509_ssl_flush_cached_client_CA(SSL_CONFIG *cfg) {
+  sk_X509_NAME_pop_free(cfg->cached_x509_client_CA, X509_NAME_free);
+  cfg->cached_x509_client_CA = nullptr;
+}
+
+static void ssl_crypto_x509_ssl_config_free(SSL_CONFIG *cfg) {
+  sk_X509_NAME_pop_free(cfg->cached_x509_client_CA, X509_NAME_free);
+  cfg->cached_x509_client_CA = nullptr;
+  X509_VERIFY_PARAM_free(cfg->param);
+}
+
+static bool ssl_crypto_x509_ssl_auto_chain_if_needed(SSL_HANDSHAKE *hs) {
+  // Only build a chain if there are no intermediates configured and the feature
+  // isn't disabled.
+  if ((hs->ssl->mode & SSL_MODE_NO_AUTO_CHAIN) ||
+      !ssl_has_certificate(hs) || hs->config->cert->chain == NULL ||
+      sk_CRYPTO_BUFFER_num(hs->config->cert->chain.get()) > 1) {
+    return true;
+  }
+
+  UniquePtr<X509> leaf(X509_parse_from_buffer(
+      sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0)));
+  if (!leaf) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  ScopedX509_STORE_CTX ctx;
+  if (!X509_STORE_CTX_init(ctx.get(), hs->ssl->ctx->cert_store, leaf.get(),
+                           NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  // Attempt to build a chain, ignoring the result.
+  X509_verify_cert(ctx.get());
+  ERR_clear_error();
+
+  // Remove the leaf from the generated chain.
+  X509_free(sk_X509_shift(ctx->chain));
+
+  if (!ssl_cert_set_chain(hs->config->cert.get(), ctx->chain)) {
+    return false;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(hs->config->cert.get());
+
+  return true;
+}
+
+static void ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {
+  sk_X509_NAME_pop_free(ctx->cached_x509_client_CA, X509_NAME_free);
+  ctx->cached_x509_client_CA = nullptr;
+}
+
+static bool ssl_crypto_x509_ssl_ctx_new(SSL_CTX *ctx) {
+  ctx->cert_store = X509_STORE_new();
+  ctx->param = X509_VERIFY_PARAM_new();
+  return (ctx->cert_store != nullptr && ctx->param != nullptr);
+}
+
+static void ssl_crypto_x509_ssl_ctx_free(SSL_CTX *ctx) {
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
+  X509_VERIFY_PARAM_free(ctx->param);
+  X509_STORE_free(ctx->cert_store);
+}
+
+const SSL_X509_METHOD ssl_crypto_x509_method = {
+  ssl_crypto_x509_check_client_CA_list,
+  ssl_crypto_x509_cert_clear,
+  ssl_crypto_x509_cert_free,
+  ssl_crypto_x509_cert_dup,
+  ssl_crypto_x509_cert_flush_cached_chain,
+  ssl_crypto_x509_cert_flush_cached_leaf,
+  ssl_crypto_x509_session_cache_objects,
+  ssl_crypto_x509_session_dup,
+  ssl_crypto_x509_session_clear,
+  ssl_crypto_x509_session_verify_cert_chain,
+  ssl_crypto_x509_hs_flush_cached_ca_names,
+  ssl_crypto_x509_ssl_new,
+  ssl_crypto_x509_ssl_config_free,
+  ssl_crypto_x509_ssl_flush_cached_client_CA,
+  ssl_crypto_x509_ssl_auto_chain_if_needed,
+  ssl_crypto_x509_ssl_ctx_new,
+  ssl_crypto_x509_ssl_ctx_free,
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA,
+};
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+X509 *SSL_get_peer_certificate(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (ssl == NULL) {
+    return NULL;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL || session->x509_peer == NULL) {
+    return NULL;
+  }
+  X509_up_ref(session->x509_peer);
+  return session->x509_peer;
+}
+
+STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == nullptr) {
+    return nullptr;
+  }
+
+  // OpenSSL historically didn't include the leaf certificate in the returned
+  // certificate chain, but only for servers.
+  return ssl->server ? session->x509_chain_without_leaf : session->x509_chain;
+}
+
+STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+
+  return session->x509_chain;
+}
+
+int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
+}
+
+int SSL_set_purpose(SSL *ssl, int purpose) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set_purpose(ssl->config->param, purpose);
+}
+
+int SSL_CTX_set_trust(SSL_CTX *ctx, int trust) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
+}
+
+int SSL_set_trust(SSL *ssl, int trust) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set_trust(ssl->config->param, trust);
+}
+
+int SSL_CTX_set1_param(SSL_CTX *ctx, const X509_VERIFY_PARAM *param) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set1(ctx->param, param);
+}
+
+int SSL_set1_param(SSL *ssl, const X509_VERIFY_PARAM *param) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set1(ssl->config->param, param);
+}
+
+X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->param;
+}
+
+X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl->config->param;
+}
+
+int SSL_get_verify_depth(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return X509_VERIFY_PARAM_get_depth(ssl->config->param);
+}
+
+int (*SSL_get_verify_callback(const SSL *ssl))(int, X509_STORE_CTX *) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl->config->verify_callback;
+}
+
+int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->verify_mode;
+}
+
+int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_get_depth(ctx->param);
+}
+
+int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
+    int ok, X509_STORE_CTX *store_ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->default_verify_callback;
+}
+
+void SSL_set_verify(SSL *ssl, int mode,
+                    int (*callback)(int ok, X509_STORE_CTX *store_ctx)) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->verify_mode = mode;
+  if (callback != NULL) {
+    ssl->config->verify_callback = callback;
+  }
+}
+
+void SSL_set_verify_depth(SSL *ssl, int depth) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  X509_VERIFY_PARAM_set_depth(ssl->config->param, depth);
+}
+
+void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
+                                      int (*cb)(X509_STORE_CTX *store_ctx,
+                                                void *arg),
+                                      void *arg) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->app_verify_callback = cb;
+  ctx->app_verify_arg = arg;
+}
+
+void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
+                        int (*cb)(int, X509_STORE_CTX *)) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->verify_mode = mode;
+  ctx->default_verify_callback = cb;
+}
+
+void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) {
+  check_ssl_ctx_x509_method(ctx);
+  X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+}
+
+int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_STORE_set_default_paths(ctx->cert_store);
+}
+
+int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *ca_file,
+                                  const char *ca_dir) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_STORE_load_locations(ctx->cert_store, ca_file, ca_dir);
+}
+
+void SSL_set_verify_result(SSL *ssl, long result) {
+  check_ssl_x509_method(ssl);
+  if (result != X509_V_OK) {
+    abort();
+  }
+}
+
+long SSL_get_verify_result(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return X509_V_ERR_INVALID_CALL;
+  }
+  return session->verify_result;
+}
+
+X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->cert_store;
+}
+
+void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  X509_STORE_free(ctx->cert_store);
+  ctx->cert_store = store;
+}
+
+static int ssl_use_certificate(CERT *cert, X509 *x) {
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x);
+  if (!buffer) {
+    return 0;
+  }
+
+  return ssl_set_cert(cert, std::move(buffer));
+}
+
+int SSL_use_certificate(SSL *ssl, X509 *x) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_use_certificate(ssl->config->cert.get(), x);
+}
+
+int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_use_certificate(ctx->cert.get(), x);
+}
+
+// ssl_cert_cache_leaf_cert sets |cert->x509_leaf|, if currently NULL, from the
+// first element of |cert->chain|.
+static int ssl_cert_cache_leaf_cert(CERT *cert) {
+  assert(cert->x509_method);
+
+  if (cert->x509_leaf != NULL ||
+      cert->chain == NULL) {
+    return 1;
+  }
+
+  CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+  if (!leaf) {
+    return 1;
+  }
+
+  cert->x509_leaf = X509_parse_from_buffer(leaf);
+  return cert->x509_leaf != NULL;
+}
+
+static X509 *ssl_cert_get0_leaf(CERT *cert) {
+  if (cert->x509_leaf == NULL &&
+      !ssl_cert_cache_leaf_cert(cert)) {
+    return NULL;
+  }
+
+  return cert->x509_leaf;
+}
+
+X509 *SSL_get_certificate(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl_cert_get0_leaf(ssl->config->cert.get());
+}
+
+X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
+  return ssl_cert_get0_leaf(ctx->cert.get());
+}
+
+static int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) {
+  if (!ssl_cert_set_chain(cert, chain)) {
+    return 0;
+  }
+
+  sk_X509_pop_free(chain, X509_free);
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) {
+  if (!ssl_cert_set_chain(cert, chain)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_append_cert(CERT *cert, X509 *x509) {
+  assert(cert->x509_method);
+
+  UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
+  if (!buffer) {
+    return 0;
+  }
+
+  if (cert->chain != NULL) {
+    return PushToStack(cert->chain.get(), std::move(buffer));
+  }
+
+  cert->chain = new_leafless_chain();
+  if (!cert->chain ||
+      !PushToStack(cert->chain.get(), std::move(buffer))) {
+    cert->chain.reset();
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) {
+  if (!ssl_cert_append_cert(cert, x509)) {
+    return 0;
+  }
+
+  X509_free(cert->x509_stash);
+  cert->x509_stash = x509;
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) {
+  if (!ssl_cert_append_cert(cert, x509)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_set0_chain(ctx->cert.get(), chain);
+}
+
+int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_set1_chain(ctx->cert.get(), chain);
+}
+
+int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_set0_chain(ssl->config->cert.get(), chain);
+}
+
+int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_set1_chain(ssl->config->cert.get(), chain);
+}
+
+int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_add0_chain_cert(ctx->cert.get(), x509);
+}
+
+int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_add1_chain_cert(ctx->cert.get(), x509);
+}
+
+int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_add0_chain_cert(ctx, x509);
+}
+
+int SSL_add0_chain_cert(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_add0_chain_cert(ssl->config->cert.get(), x509);
+}
+
+int SSL_add1_chain_cert(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_add1_chain_cert(ssl->config->cert.get(), x509);
+}
+
+int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_set0_chain(ctx, NULL);
+}
+
+int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_clear_chain_certs(ctx);
+}
+
+int SSL_clear_chain_certs(SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  return SSL_set0_chain(ssl, NULL);
+}
+
+// ssl_cert_cache_chain_certs fills in |cert->x509_chain| from elements 1.. of
+// |cert->chain|.
+static int ssl_cert_cache_chain_certs(CERT *cert) {
+  assert(cert->x509_method);
+
+  if (cert->x509_chain != nullptr ||
+      cert->chain == nullptr ||
+      sk_CRYPTO_BUFFER_num(cert->chain.get()) < 2) {
+    return 1;
+  }
+
+  UniquePtr<STACK_OF(X509)> chain(sk_X509_new_null());
+  if (!chain) {
+    return 0;
+  }
+
+  for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain.get()); i++) {
+    CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(cert->chain.get(), i);
+    UniquePtr<X509> x509(X509_parse_from_buffer(buffer));
+    if (!x509 ||
+        !PushToStack(chain.get(), std::move(x509))) {
+      return 0;
+    }
+  }
+
+  cert->x509_chain = chain.release();
+  return 1;
+}
+
+int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) {
+  check_ssl_ctx_x509_method(ctx);
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
+  if (!ssl_cert_cache_chain_certs(ctx->cert.get())) {
+    *out_chain = NULL;
+    return 0;
+  }
+
+  *out_chain = ctx->cert->x509_chain;
+  return 1;
+}
+
+int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
+                                  STACK_OF(X509) **out_chain) {
+  return SSL_CTX_get0_chain_certs(ctx, out_chain);
+}
+
+int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  if (!ssl_cert_cache_chain_certs(ssl->config->cert.get())) {
+    *out_chain = NULL;
+    return 0;
+  }
+
+  *out_chain = ssl->config->cert->x509_chain;
+  return 1;
+}
+
+SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out) {
+  uint8_t *data;
+  size_t len;
+  if (!BIO_read_asn1(bio, &data, &len, 1024 * 1024)) {
+    return 0;
+  }
+  bssl::UniquePtr<uint8_t> free_data(data);
+  const uint8_t *ptr = data;
+  return d2i_SSL_SESSION(out, &ptr, static_cast<long>(len));
+}
+
+int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session) {
+  uint8_t *data;
+  size_t len;
+  if (!SSL_SESSION_to_bytes(session, &data, &len)) {
+    return 0;
+  }
+  bssl::UniquePtr<uint8_t> free_data(data);
+  return BIO_write_all(bio, data, len);
+}
+
+IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
+
+SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) {
+  if (length < 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *pp, length);
+
+  UniquePtr<SSL_SESSION> ret = SSL_SESSION_parse(&cbs, &ssl_crypto_x509_method,
+                                                 NULL /* no buffer pool */);
+  if (!ret) {
+    return NULL;
+  }
+
+  if (a) {
+    SSL_SESSION_free(*a);
+    *a = ret.get();
+  }
+  *pp = CBS_data(&cbs);
+  return ret.release();
+}
+
+STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list) {
+  return sk_X509_NAME_deep_copy(list, X509_NAME_dup, X509_NAME_free);
+}
+
+static void set_client_CA_list(UniquePtr<STACK_OF(CRYPTO_BUFFER)> *ca_list,
+                               const STACK_OF(X509_NAME) *name_list,
+                               CRYPTO_BUFFER_POOL *pool) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> buffers(sk_CRYPTO_BUFFER_new_null());
+  if (!buffers) {
+    return;
+  }
+
+  for (X509_NAME *name : name_list) {
+    uint8_t *outp = NULL;
+    int len = i2d_X509_NAME(name, &outp);
+    if (len < 0) {
+      return;
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
+    OPENSSL_free(outp);
+    if (!buffer ||
+        !PushToStack(buffers.get(), std::move(buffer))) {
+      return;
+    }
+  }
+
+  *ca_list = std::move(buffers);
+}
+
+void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl->config.get());
+  set_client_CA_list(&ssl->config->client_CA, name_list, ssl->ctx->pool);
+  sk_X509_NAME_pop_free(name_list, X509_NAME_free);
+}
+
+void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx);
+  set_client_CA_list(&ctx->client_CA, name_list, ctx->pool);
+  sk_X509_NAME_pop_free(name_list, X509_NAME_free);
+}
+
+static STACK_OF(X509_NAME) *
+    buffer_names_to_x509(const STACK_OF(CRYPTO_BUFFER) *names,
+                         STACK_OF(X509_NAME) **cached) {
+  if (names == NULL) {
+    return NULL;
+  }
+
+  if (*cached != NULL) {
+    return *cached;
+  }
+
+  UniquePtr<STACK_OF(X509_NAME)> new_cache(sk_X509_NAME_new_null());
+  if (!new_cache) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  for (const CRYPTO_BUFFER *buffer : names) {
+    const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
+    UniquePtr<X509_NAME> name(
+        d2i_X509_NAME(nullptr, &inp, CRYPTO_BUFFER_len(buffer)));
+    if (!name ||
+        inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer) ||
+        !PushToStack(new_cache.get(), std::move(name))) {
+      return NULL;
+    }
+  }
+
+  *cached = new_cache.release();
+  return *cached;
+}
+
+STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return NULL;
+  }
+  // For historical reasons, this function is used both to query configuration
+  // state on a server as well as handshake state on a client. However, whether
+  // |ssl| is a client or server is not known until explicitly configured with
+  // |SSL_set_connect_state|. If |do_handshake| is NULL, |ssl| is in an
+  // indeterminate mode and |ssl->server| is unset.
+  if (ssl->do_handshake != NULL && !ssl->server) {
+    if (ssl->s3->hs != NULL) {
+      return buffer_names_to_x509(ssl->s3->hs->ca_names.get(),
+                                  &ssl->s3->hs->cached_x509_ca_names);
+    }
+
+    return NULL;
+  }
+
+  if (ssl->config->client_CA != NULL) {
+    return buffer_names_to_x509(
+        ssl->config->client_CA.get(),
+        (STACK_OF(X509_NAME) **)&ssl->config->cached_x509_client_CA);
+  }
+  return SSL_CTX_get_client_CA_list(ssl->ctx.get());
+}
+
+STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  // This is a logically const operation that may be called on multiple threads,
+  // so it needs to lock around updating |cached_x509_client_CA|.
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX *>(&ctx->lock));
+  return buffer_names_to_x509(
+      ctx->client_CA.get(),
+      const_cast<STACK_OF(X509_NAME) **>(&ctx->cached_x509_client_CA));
+}
+
+static int add_client_CA(UniquePtr<STACK_OF(CRYPTO_BUFFER)> *names, X509 *x509,
+                         CRYPTO_BUFFER_POOL *pool) {
+  if (x509 == NULL) {
+    return 0;
+  }
+
+  uint8_t *outp = NULL;
+  int len = i2d_X509_NAME(X509_get_subject_name(x509), &outp);
+  if (len < 0) {
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
+  OPENSSL_free(outp);
+  if (!buffer) {
+    return 0;
+  }
+
+  int alloced = 0;
+  if (*names == nullptr) {
+    names->reset(sk_CRYPTO_BUFFER_new_null());
+    alloced = 1;
+
+    if (*names == NULL) {
+      return 0;
+    }
+  }
+
+  if (!PushToStack(names->get(), std::move(buffer))) {
+    if (alloced) {
+      names->reset();
+    }
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_add_client_CA(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  if (!add_client_CA(&ssl->config->client_CA, x509, ssl->ctx->pool)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_ssl_flush_cached_client_CA(ssl->config.get());
+  return 1;
+}
+
+int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  if (!add_client_CA(&ctx->client_CA, x509, ctx->pool)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
+  return 1;
+}
+
+static int do_client_cert_cb(SSL *ssl, void *arg) {
+  // Should only be called during handshake, but check to be sure.
+  if (!ssl->config) {
+    assert(ssl->config);
+    return -1;
+  }
+
+  if (ssl_has_certificate(ssl->s3->hs.get()) ||
+      ssl->ctx->client_cert_cb == NULL) {
+    return 1;
+  }
+
+  X509 *x509 = NULL;
+  EVP_PKEY *pkey = NULL;
+  int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey);
+  if (ret < 0) {
+    return -1;
+  }
+  UniquePtr<X509> free_x509(x509);
+  UniquePtr<EVP_PKEY> free_pkey(pkey);
+
+  if (ret != 0) {
+    if (!SSL_use_certificate(ssl, x509) ||
+        !SSL_use_PrivateKey(ssl, pkey)) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl,
+                                                        X509 **out_x509,
+                                                        EVP_PKEY **out_pkey)) {
+  check_ssl_ctx_x509_method(ctx);
+  // Emulate the old client certificate callback with the new one.
+  SSL_CTX_set_cert_cb(ctx, do_client_cert_cb, NULL);
+  ctx->client_cert_cb = cb;
+}
+
+static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store,
+                          int take_ref) {
+  X509_STORE_free(*store_ptr);
+  *store_ptr = new_store;
+
+  if (new_store != NULL && take_ref) {
+    X509_STORE_up_ref(new_store);
+  }
+
+  return 1;
+}
+
+int SSL_get_ex_data_X509_STORE_CTX_idx(void) {
+  // The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the
+  // reserved app_data slot. Before ex_data was introduced, app_data was used.
+  // Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data|
+  // works.
+  return 0;
+}
+
+int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  return set_cert_store(&ctx->cert->verify_store, store, 0);
+}
+
+int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  return set_cert_store(&ctx->cert->verify_store, store, 1);
+}
+
+int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_cert_store(&ssl->config->cert->verify_store, store, 0);
+}
+
+int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_cert_store(&ssl->config->cert->verify_store, store, 1);
+}
+
+int SSL_alert_from_verify_result(long result) {
+  switch (result) {
+    case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+    case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+    case X509_V_ERR_INVALID_CA:
+    case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+    case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+    case X509_V_ERR_UNABLE_TO_GET_CRL:
+    case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+    case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+      return SSL_AD_UNKNOWN_CA;
+
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+    case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+    case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+    case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+    case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+    case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+    case X509_V_ERR_CERT_UNTRUSTED:
+    case X509_V_ERR_CERT_REJECTED:
+    case X509_V_ERR_HOSTNAME_MISMATCH:
+    case X509_V_ERR_EMAIL_MISMATCH:
+    case X509_V_ERR_IP_ADDRESS_MISMATCH:
+      return SSL_AD_BAD_CERTIFICATE;
+
+    case X509_V_ERR_CERT_SIGNATURE_FAILURE:
+    case X509_V_ERR_CRL_SIGNATURE_FAILURE:
+      return SSL_AD_DECRYPT_ERROR;
+
+    case X509_V_ERR_CERT_HAS_EXPIRED:
+    case X509_V_ERR_CERT_NOT_YET_VALID:
+    case X509_V_ERR_CRL_HAS_EXPIRED:
+    case X509_V_ERR_CRL_NOT_YET_VALID:
+      return SSL_AD_CERTIFICATE_EXPIRED;
+
+    case X509_V_ERR_CERT_REVOKED:
+      return SSL_AD_CERTIFICATE_REVOKED;
+
+    case X509_V_ERR_UNSPECIFIED:
+    case X509_V_ERR_OUT_OF_MEM:
+    case X509_V_ERR_INVALID_CALL:
+    case X509_V_ERR_STORE_LOOKUP:
+      return SSL_AD_INTERNAL_ERROR;
+
+    case X509_V_ERR_APPLICATION_VERIFICATION:
+      return SSL_AD_HANDSHAKE_FAILURE;
+
+    case X509_V_ERR_INVALID_PURPOSE:
+      return SSL_AD_UNSUPPORTED_CERTIFICATE;
+
+    default:
+      return SSL_AD_CERTIFICATE_UNKNOWN;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc.grpc_back
new file mode 100644
index 0000000..cda7611
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/ssl_x509.cc.grpc_back	
@@ -0,0 +1,1358 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECC cipher suite support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/x509_vfy.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// check_ssl_x509_method asserts that |ssl| has the X509-based method
+// installed. Calling an X509-based method on an |ssl| with a different method
+// will likely misbehave and possibly crash or leak memory.
+static void check_ssl_x509_method(const SSL *ssl) {
+  assert(ssl == NULL || ssl->ctx->x509_method == &ssl_crypto_x509_method);
+}
+
+// check_ssl_ctx_x509_method acts like |check_ssl_x509_method|, but for an
+// |SSL_CTX|.
+static void check_ssl_ctx_x509_method(const SSL_CTX *ctx) {
+  assert(ctx == NULL || ctx->x509_method == &ssl_crypto_x509_method);
+}
+
+// x509_to_buffer returns a |CRYPTO_BUFFER| that contains the serialised
+// contents of |x509|.
+static UniquePtr<CRYPTO_BUFFER> x509_to_buffer(X509 *x509) {
+  uint8_t *buf = NULL;
+  int cert_len = i2d_X509(x509, &buf);
+  if (cert_len <= 0) {
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(buf, cert_len, NULL));
+  OPENSSL_free(buf);
+
+  return buffer;
+}
+
+// new_leafless_chain returns a fresh stack of buffers set to {NULL}.
+static UniquePtr<STACK_OF(CRYPTO_BUFFER)> new_leafless_chain(void) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> chain(sk_CRYPTO_BUFFER_new_null());
+  if (!chain ||
+      !sk_CRYPTO_BUFFER_push(chain.get(), nullptr)) {
+    return nullptr;
+  }
+
+  return chain;
+}
+
+// ssl_cert_set_chain sets elements 1.. of |cert->chain| to the serialised
+// forms of elements of |chain|. It returns one on success or zero on error, in
+// which case no change to |cert->chain| is made. It preverses the existing
+// leaf from |cert->chain|, if any.
+static bool ssl_cert_set_chain(CERT *cert, STACK_OF(X509) *chain) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> new_chain;
+
+  if (cert->chain != nullptr) {
+    new_chain.reset(sk_CRYPTO_BUFFER_new_null());
+    if (!new_chain) {
+      return false;
+    }
+
+    // |leaf| might be NULL if it's a “leafless” chain.
+    CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+    if (!PushToStack(new_chain.get(), UpRef(leaf))) {
+      return false;
+    }
+  }
+
+  for (X509 *x509 : chain) {
+    if (!new_chain) {
+      new_chain = new_leafless_chain();
+      if (!new_chain) {
+        return false;
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
+    if (!buffer ||
+        !PushToStack(new_chain.get(), std::move(buffer))) {
+      return false;
+    }
+  }
+
+  cert->chain = std::move(new_chain);
+  return true;
+}
+
+static void ssl_crypto_x509_cert_flush_cached_leaf(CERT *cert) {
+  X509_free(cert->x509_leaf);
+  cert->x509_leaf = nullptr;
+}
+
+static void ssl_crypto_x509_cert_flush_cached_chain(CERT *cert) {
+  sk_X509_pop_free(cert->x509_chain, X509_free);
+  cert->x509_chain = nullptr;
+}
+
+static bool ssl_crypto_x509_check_client_CA_list(
+    STACK_OF(CRYPTO_BUFFER) *names) {
+  for (const CRYPTO_BUFFER *buffer : names) {
+    const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
+    UniquePtr<X509_NAME> name(
+        d2i_X509_NAME(nullptr, &inp, CRYPTO_BUFFER_len(buffer)));
+    if (name == nullptr ||
+        inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static void ssl_crypto_x509_cert_clear(CERT *cert) {
+  ssl_crypto_x509_cert_flush_cached_leaf(cert);
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+
+  X509_free(cert->x509_stash);
+  cert->x509_stash = nullptr;
+}
+
+static void ssl_crypto_x509_cert_free(CERT *cert) {
+  ssl_crypto_x509_cert_clear(cert);
+  X509_STORE_free(cert->verify_store);
+}
+
+static void ssl_crypto_x509_cert_dup(CERT *new_cert, const CERT *cert) {
+  if (cert->verify_store != nullptr) {
+    X509_STORE_up_ref(cert->verify_store);
+    new_cert->verify_store = cert->verify_store;
+  }
+}
+
+static bool ssl_crypto_x509_session_cache_objects(SSL_SESSION *sess) {
+  bssl::UniquePtr<STACK_OF(X509)> chain, chain_without_leaf;
+  if (sk_CRYPTO_BUFFER_num(sess->certs.get()) > 0) {
+    chain.reset(sk_X509_new_null());
+    if (!chain) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    if (sess->is_server) {
+      // chain_without_leaf is only needed for server sessions. See
+      // |SSL_get_peer_cert_chain|.
+      chain_without_leaf.reset(sk_X509_new_null());
+      if (!chain_without_leaf) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+        return false;
+      }
+    }
+  }
+
+  bssl::UniquePtr<X509> leaf;
+  for (CRYPTO_BUFFER *cert : sess->certs.get()) {
+    UniquePtr<X509> x509(X509_parse_from_buffer(cert));
+    if (!x509) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+    if (leaf == nullptr) {
+      leaf = UpRef(x509);
+    } else if (chain_without_leaf &&
+               !PushToStack(chain_without_leaf.get(), UpRef(x509))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+    if (!PushToStack(chain.get(), std::move(x509))) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  sk_X509_pop_free(sess->x509_chain, X509_free);
+  sess->x509_chain = chain.release();
+
+  sk_X509_pop_free(sess->x509_chain_without_leaf, X509_free);
+  sess->x509_chain_without_leaf = chain_without_leaf.release();
+
+  X509_free(sess->x509_peer);
+  sess->x509_peer = leaf.release();
+  return true;
+}
+
+static bool ssl_crypto_x509_session_dup(SSL_SESSION *new_session,
+                                        const SSL_SESSION *session) {
+  new_session->x509_peer = UpRef(session->x509_peer).release();
+  if (session->x509_chain != nullptr) {
+    new_session->x509_chain = X509_chain_up_ref(session->x509_chain);
+    if (new_session->x509_chain == nullptr) {
+      return false;
+    }
+  }
+  if (session->x509_chain_without_leaf != nullptr) {
+    new_session->x509_chain_without_leaf =
+        X509_chain_up_ref(session->x509_chain_without_leaf);
+    if (new_session->x509_chain_without_leaf == nullptr) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static void ssl_crypto_x509_session_clear(SSL_SESSION *session) {
+  X509_free(session->x509_peer);
+  session->x509_peer = nullptr;
+  sk_X509_pop_free(session->x509_chain, X509_free);
+  session->x509_chain = nullptr;
+  sk_X509_pop_free(session->x509_chain_without_leaf, X509_free);
+  session->x509_chain_without_leaf = nullptr;
+}
+
+static bool ssl_crypto_x509_session_verify_cert_chain(SSL_SESSION *session,
+                                                      SSL_HANDSHAKE *hs,
+                                                      uint8_t *out_alert) {
+  *out_alert = SSL_AD_INTERNAL_ERROR;
+  STACK_OF(X509) *const cert_chain = session->x509_chain;
+  if (cert_chain == nullptr || sk_X509_num(cert_chain) == 0) {
+    return false;
+  }
+
+  SSL_CTX *ssl_ctx = hs->ssl->ctx.get();
+  X509_STORE *verify_store = ssl_ctx->cert_store;
+  if (hs->config->cert->verify_store != nullptr) {
+    verify_store = hs->config->cert->verify_store;
+  }
+
+  X509 *leaf = sk_X509_value(cert_chain, 0);
+  ScopedX509_STORE_CTX ctx;
+  if (!X509_STORE_CTX_init(ctx.get(), verify_store, leaf, cert_chain) ||
+      !X509_STORE_CTX_set_ex_data(
+          ctx.get(), SSL_get_ex_data_X509_STORE_CTX_idx(), hs->ssl) ||
+      // We need to inherit the verify parameters. These can be determined by
+      // the context: if its a server it will verify SSL client certificates or
+      // vice versa.
+      !X509_STORE_CTX_set_default(
+          ctx.get(), hs->ssl->server ? "ssl_client" : "ssl_server") ||
+      // Anything non-default in "param" should overwrite anything in the ctx.
+      !X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(ctx.get()),
+                              hs->config->param)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  if (hs->config->verify_callback) {
+    X509_STORE_CTX_set_verify_cb(ctx.get(), hs->config->verify_callback);
+  }
+
+  int verify_ret;
+  if (ssl_ctx->app_verify_callback != nullptr) {
+    verify_ret =
+        ssl_ctx->app_verify_callback(ctx.get(), ssl_ctx->app_verify_arg);
+  } else {
+    verify_ret = X509_verify_cert(ctx.get());
+  }
+
+  session->verify_result = ctx->error;
+
+  // If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result.
+  if (verify_ret <= 0 && hs->config->verify_mode != SSL_VERIFY_NONE) {
+    *out_alert = SSL_alert_from_verify_result(ctx->error);
+    return false;
+  }
+
+  ERR_clear_error();
+  return true;
+}
+
+static void ssl_crypto_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {
+  sk_X509_NAME_pop_free(hs->cached_x509_ca_names, X509_NAME_free);
+  hs->cached_x509_ca_names = nullptr;
+}
+
+static bool ssl_crypto_x509_ssl_new(SSL_HANDSHAKE *hs) {
+  hs->config->param = X509_VERIFY_PARAM_new();
+  if (hs->config->param == nullptr) {
+    return false;
+  }
+  X509_VERIFY_PARAM_inherit(hs->config->param, hs->ssl->ctx->param);
+  return true;
+}
+
+static void ssl_crypto_x509_ssl_flush_cached_client_CA(SSL_CONFIG *cfg) {
+  sk_X509_NAME_pop_free(cfg->cached_x509_client_CA, X509_NAME_free);
+  cfg->cached_x509_client_CA = nullptr;
+}
+
+static void ssl_crypto_x509_ssl_config_free(SSL_CONFIG *cfg) {
+  sk_X509_NAME_pop_free(cfg->cached_x509_client_CA, X509_NAME_free);
+  cfg->cached_x509_client_CA = nullptr;
+  X509_VERIFY_PARAM_free(cfg->param);
+}
+
+static bool ssl_crypto_x509_ssl_auto_chain_if_needed(SSL_HANDSHAKE *hs) {
+  // Only build a chain if there are no intermediates configured and the feature
+  // isn't disabled.
+  if ((hs->ssl->mode & SSL_MODE_NO_AUTO_CHAIN) ||
+      !ssl_has_certificate(hs) || hs->config->cert->chain == NULL ||
+      sk_CRYPTO_BUFFER_num(hs->config->cert->chain.get()) > 1) {
+    return true;
+  }
+
+  UniquePtr<X509> leaf(X509_parse_from_buffer(
+      sk_CRYPTO_BUFFER_value(hs->config->cert->chain.get(), 0)));
+  if (!leaf) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  ScopedX509_STORE_CTX ctx;
+  if (!X509_STORE_CTX_init(ctx.get(), hs->ssl->ctx->cert_store, leaf.get(),
+                           NULL)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
+    return false;
+  }
+
+  // Attempt to build a chain, ignoring the result.
+  X509_verify_cert(ctx.get());
+  ERR_clear_error();
+
+  // Remove the leaf from the generated chain.
+  X509_free(sk_X509_shift(ctx->chain));
+
+  if (!ssl_cert_set_chain(hs->config->cert.get(), ctx->chain)) {
+    return false;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(hs->config->cert.get());
+
+  return true;
+}
+
+static void ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {
+  sk_X509_NAME_pop_free(ctx->cached_x509_client_CA, X509_NAME_free);
+  ctx->cached_x509_client_CA = nullptr;
+}
+
+static bool ssl_crypto_x509_ssl_ctx_new(SSL_CTX *ctx) {
+  ctx->cert_store = X509_STORE_new();
+  ctx->param = X509_VERIFY_PARAM_new();
+  return (ctx->cert_store != nullptr && ctx->param != nullptr);
+}
+
+static void ssl_crypto_x509_ssl_ctx_free(SSL_CTX *ctx) {
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
+  X509_VERIFY_PARAM_free(ctx->param);
+  X509_STORE_free(ctx->cert_store);
+}
+
+const SSL_X509_METHOD ssl_crypto_x509_method = {
+  ssl_crypto_x509_check_client_CA_list,
+  ssl_crypto_x509_cert_clear,
+  ssl_crypto_x509_cert_free,
+  ssl_crypto_x509_cert_dup,
+  ssl_crypto_x509_cert_flush_cached_chain,
+  ssl_crypto_x509_cert_flush_cached_leaf,
+  ssl_crypto_x509_session_cache_objects,
+  ssl_crypto_x509_session_dup,
+  ssl_crypto_x509_session_clear,
+  ssl_crypto_x509_session_verify_cert_chain,
+  ssl_crypto_x509_hs_flush_cached_ca_names,
+  ssl_crypto_x509_ssl_new,
+  ssl_crypto_x509_ssl_config_free,
+  ssl_crypto_x509_ssl_flush_cached_client_CA,
+  ssl_crypto_x509_ssl_auto_chain_if_needed,
+  ssl_crypto_x509_ssl_ctx_new,
+  ssl_crypto_x509_ssl_ctx_free,
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA,
+};
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+X509 *SSL_get_peer_certificate(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (ssl == NULL) {
+    return NULL;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL || session->x509_peer == NULL) {
+    return NULL;
+  }
+  X509_up_ref(session->x509_peer);
+  return session->x509_peer;
+}
+
+STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (ssl == nullptr) {
+    return nullptr;
+  }
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == nullptr) {
+    return nullptr;
+  }
+
+  // OpenSSL historically didn't include the leaf certificate in the returned
+  // certificate chain, but only for servers.
+  return ssl->server ? session->x509_chain_without_leaf : session->x509_chain;
+}
+
+STACK_OF(X509) *SSL_get_peer_full_cert_chain(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return NULL;
+  }
+
+  return session->x509_chain;
+}
+
+int SSL_CTX_set_purpose(SSL_CTX *ctx, int purpose) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set_purpose(ctx->param, purpose);
+}
+
+int SSL_set_purpose(SSL *ssl, int purpose) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set_purpose(ssl->config->param, purpose);
+}
+
+int SSL_CTX_set_trust(SSL_CTX *ctx, int trust) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set_trust(ctx->param, trust);
+}
+
+int SSL_set_trust(SSL *ssl, int trust) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set_trust(ssl->config->param, trust);
+}
+
+int SSL_CTX_set1_param(SSL_CTX *ctx, const X509_VERIFY_PARAM *param) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_set1(ctx->param, param);
+}
+
+int SSL_set1_param(SSL *ssl, const X509_VERIFY_PARAM *param) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return X509_VERIFY_PARAM_set1(ssl->config->param, param);
+}
+
+X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->param;
+}
+
+X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl->config->param;
+}
+
+int SSL_get_verify_depth(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return X509_VERIFY_PARAM_get_depth(ssl->config->param);
+}
+
+int (*SSL_get_verify_callback(const SSL *ssl))(int, X509_STORE_CTX *) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl->config->verify_callback;
+}
+
+int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->verify_mode;
+}
+
+int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_VERIFY_PARAM_get_depth(ctx->param);
+}
+
+int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(
+    int ok, X509_STORE_CTX *store_ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->default_verify_callback;
+}
+
+void SSL_set_verify(SSL *ssl, int mode,
+                    int (*callback)(int ok, X509_STORE_CTX *store_ctx)) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  ssl->config->verify_mode = mode;
+  if (callback != NULL) {
+    ssl->config->verify_callback = callback;
+  }
+}
+
+void SSL_set_verify_depth(SSL *ssl, int depth) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  X509_VERIFY_PARAM_set_depth(ssl->config->param, depth);
+}
+
+void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
+                                      int (*cb)(X509_STORE_CTX *store_ctx,
+                                                void *arg),
+                                      void *arg) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->app_verify_callback = cb;
+  ctx->app_verify_arg = arg;
+}
+
+void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
+                        int (*cb)(int, X509_STORE_CTX *)) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->verify_mode = mode;
+  ctx->default_verify_callback = cb;
+}
+
+void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) {
+  check_ssl_ctx_x509_method(ctx);
+  X509_VERIFY_PARAM_set_depth(ctx->param, depth);
+}
+
+int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_STORE_set_default_paths(ctx->cert_store);
+}
+
+int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *ca_file,
+                                  const char *ca_dir) {
+  check_ssl_ctx_x509_method(ctx);
+  return X509_STORE_load_locations(ctx->cert_store, ca_file, ca_dir);
+}
+
+void SSL_set_verify_result(SSL *ssl, long result) {
+  check_ssl_x509_method(ssl);
+  if (result != X509_V_OK) {
+    abort();
+  }
+}
+
+long SSL_get_verify_result(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  SSL_SESSION *session = SSL_get_session(ssl);
+  if (session == NULL) {
+    return X509_V_ERR_INVALID_CALL;
+  }
+  return session->verify_result;
+}
+
+X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return ctx->cert_store;
+}
+
+void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  X509_STORE_free(ctx->cert_store);
+  ctx->cert_store = store;
+}
+
+static int ssl_use_certificate(CERT *cert, X509 *x) {
+  if (x == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_PASSED_NULL_PARAMETER);
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x);
+  if (!buffer) {
+    return 0;
+  }
+
+  return ssl_set_cert(cert, std::move(buffer));
+}
+
+int SSL_use_certificate(SSL *ssl, X509 *x) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_use_certificate(ssl->config->cert.get(), x);
+}
+
+int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_use_certificate(ctx->cert.get(), x);
+}
+
+// ssl_cert_cache_leaf_cert sets |cert->x509_leaf|, if currently NULL, from the
+// first element of |cert->chain|.
+static int ssl_cert_cache_leaf_cert(CERT *cert) {
+  assert(cert->x509_method);
+
+  if (cert->x509_leaf != NULL ||
+      cert->chain == NULL) {
+    return 1;
+  }
+
+  CRYPTO_BUFFER *leaf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+  if (!leaf) {
+    return 1;
+  }
+
+  cert->x509_leaf = X509_parse_from_buffer(leaf);
+  return cert->x509_leaf != NULL;
+}
+
+static X509 *ssl_cert_get0_leaf(CERT *cert) {
+  if (cert->x509_leaf == NULL &&
+      !ssl_cert_cache_leaf_cert(cert)) {
+    return NULL;
+  }
+
+  return cert->x509_leaf;
+}
+
+X509 *SSL_get_certificate(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  return ssl_cert_get0_leaf(ssl->config->cert.get());
+}
+
+X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
+  return ssl_cert_get0_leaf(ctx->cert.get());
+}
+
+static int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) {
+  if (!ssl_cert_set_chain(cert, chain)) {
+    return 0;
+  }
+
+  sk_X509_pop_free(chain, X509_free);
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) {
+  if (!ssl_cert_set_chain(cert, chain)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_append_cert(CERT *cert, X509 *x509) {
+  assert(cert->x509_method);
+
+  UniquePtr<CRYPTO_BUFFER> buffer = x509_to_buffer(x509);
+  if (!buffer) {
+    return 0;
+  }
+
+  if (cert->chain != NULL) {
+    return PushToStack(cert->chain.get(), std::move(buffer));
+  }
+
+  cert->chain = new_leafless_chain();
+  if (!cert->chain ||
+      !PushToStack(cert->chain.get(), std::move(buffer))) {
+    cert->chain.reset();
+    return 0;
+  }
+
+  return 1;
+}
+
+static int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) {
+  if (!ssl_cert_append_cert(cert, x509)) {
+    return 0;
+  }
+
+  X509_free(cert->x509_stash);
+  cert->x509_stash = x509;
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+static int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) {
+  if (!ssl_cert_append_cert(cert, x509)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_cert_flush_cached_chain(cert);
+  return 1;
+}
+
+int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_set0_chain(ctx->cert.get(), chain);
+}
+
+int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_set1_chain(ctx->cert.get(), chain);
+}
+
+int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_set0_chain(ssl->config->cert.get(), chain);
+}
+
+int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_set1_chain(ssl->config->cert.get(), chain);
+}
+
+int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_add0_chain_cert(ctx->cert.get(), x509);
+}
+
+int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return ssl_cert_add1_chain_cert(ctx->cert.get(), x509);
+}
+
+int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_add0_chain_cert(ctx, x509);
+}
+
+int SSL_add0_chain_cert(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_add0_chain_cert(ssl->config->cert.get(), x509);
+}
+
+int SSL_add1_chain_cert(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return ssl_cert_add1_chain_cert(ssl->config->cert.get(), x509);
+}
+
+int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_set0_chain(ctx, NULL);
+}
+
+int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  return SSL_CTX_clear_chain_certs(ctx);
+}
+
+int SSL_clear_chain_certs(SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  return SSL_set0_chain(ssl, NULL);
+}
+
+// ssl_cert_cache_chain_certs fills in |cert->x509_chain| from elements 1.. of
+// |cert->chain|.
+static int ssl_cert_cache_chain_certs(CERT *cert) {
+  assert(cert->x509_method);
+
+  if (cert->x509_chain != nullptr ||
+      cert->chain == nullptr ||
+      sk_CRYPTO_BUFFER_num(cert->chain.get()) < 2) {
+    return 1;
+  }
+
+  UniquePtr<STACK_OF(X509)> chain(sk_X509_new_null());
+  if (!chain) {
+    return 0;
+  }
+
+  for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain.get()); i++) {
+    CRYPTO_BUFFER *buffer = sk_CRYPTO_BUFFER_value(cert->chain.get(), i);
+    UniquePtr<X509> x509(X509_parse_from_buffer(buffer));
+    if (!x509 ||
+        !PushToStack(chain.get(), std::move(x509))) {
+      return 0;
+    }
+  }
+
+  cert->x509_chain = chain.release();
+  return 1;
+}
+
+int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) {
+  check_ssl_ctx_x509_method(ctx);
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX*>(&ctx->lock));
+  if (!ssl_cert_cache_chain_certs(ctx->cert.get())) {
+    *out_chain = NULL;
+    return 0;
+  }
+
+  *out_chain = ctx->cert->x509_chain;
+  return 1;
+}
+
+int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
+                                  STACK_OF(X509) **out_chain) {
+  return SSL_CTX_get0_chain_certs(ctx, out_chain);
+}
+
+int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return 0;
+  }
+  if (!ssl_cert_cache_chain_certs(ssl->config->cert.get())) {
+    *out_chain = NULL;
+    return 0;
+  }
+
+  *out_chain = ssl->config->cert->x509_chain;
+  return 1;
+}
+
+SSL_SESSION *d2i_SSL_SESSION_bio(BIO *bio, SSL_SESSION **out) {
+  uint8_t *data;
+  size_t len;
+  if (!BIO_read_asn1(bio, &data, &len, 1024 * 1024)) {
+    return 0;
+  }
+  bssl::UniquePtr<uint8_t> free_data(data);
+  const uint8_t *ptr = data;
+  return d2i_SSL_SESSION(out, &ptr, static_cast<long>(len));
+}
+
+int i2d_SSL_SESSION_bio(BIO *bio, const SSL_SESSION *session) {
+  uint8_t *data;
+  size_t len;
+  if (!SSL_SESSION_to_bytes(session, &data, &len)) {
+    return 0;
+  }
+  bssl::UniquePtr<uint8_t> free_data(data);
+  return BIO_write_all(bio, data, len);
+}
+
+IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
+
+SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const uint8_t **pp, long length) {
+  if (length < 0) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return NULL;
+  }
+
+  CBS cbs;
+  CBS_init(&cbs, *pp, length);
+
+  UniquePtr<SSL_SESSION> ret = SSL_SESSION_parse(&cbs, &ssl_crypto_x509_method,
+                                                 NULL /* no buffer pool */);
+  if (!ret) {
+    return NULL;
+  }
+
+  if (a) {
+    SSL_SESSION_free(*a);
+    *a = ret.get();
+  }
+  *pp = CBS_data(&cbs);
+  return ret.release();
+}
+
+STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *list) {
+  return sk_X509_NAME_deep_copy(list, X509_NAME_dup, X509_NAME_free);
+}
+
+static void set_client_CA_list(UniquePtr<STACK_OF(CRYPTO_BUFFER)> *ca_list,
+                               const STACK_OF(X509_NAME) *name_list,
+                               CRYPTO_BUFFER_POOL *pool) {
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> buffers(sk_CRYPTO_BUFFER_new_null());
+  if (!buffers) {
+    return;
+  }
+
+  for (X509_NAME *name : name_list) {
+    uint8_t *outp = NULL;
+    int len = i2d_X509_NAME(name, &outp);
+    if (len < 0) {
+      return;
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
+    OPENSSL_free(outp);
+    if (!buffer ||
+        !PushToStack(buffers.get(), std::move(buffer))) {
+      return;
+    }
+  }
+
+  *ca_list = std::move(buffers);
+}
+
+void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return;
+  }
+  ssl->ctx->x509_method->ssl_flush_cached_client_CA(ssl->config.get());
+  set_client_CA_list(&ssl->config->client_CA, name_list, ssl->ctx->pool);
+  sk_X509_NAME_pop_free(name_list, X509_NAME_free);
+}
+
+void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list) {
+  check_ssl_ctx_x509_method(ctx);
+  ctx->x509_method->ssl_ctx_flush_cached_client_CA(ctx);
+  set_client_CA_list(&ctx->client_CA, name_list, ctx->pool);
+  sk_X509_NAME_pop_free(name_list, X509_NAME_free);
+}
+
+static STACK_OF(X509_NAME) *
+    buffer_names_to_x509(const STACK_OF(CRYPTO_BUFFER) *names,
+                         STACK_OF(X509_NAME) **cached) {
+  if (names == NULL) {
+    return NULL;
+  }
+
+  if (*cached != NULL) {
+    return *cached;
+  }
+
+  UniquePtr<STACK_OF(X509_NAME)> new_cache(sk_X509_NAME_new_null());
+  if (!new_cache) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return NULL;
+  }
+
+  for (const CRYPTO_BUFFER *buffer : names) {
+    const uint8_t *inp = CRYPTO_BUFFER_data(buffer);
+    UniquePtr<X509_NAME> name(
+        d2i_X509_NAME(nullptr, &inp, CRYPTO_BUFFER_len(buffer)));
+    if (!name ||
+        inp != CRYPTO_BUFFER_data(buffer) + CRYPTO_BUFFER_len(buffer) ||
+        !PushToStack(new_cache.get(), std::move(name))) {
+      return NULL;
+    }
+  }
+
+  *cached = new_cache.release();
+  return *cached;
+}
+
+STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *ssl) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    assert(ssl->config);
+    return NULL;
+  }
+  // For historical reasons, this function is used both to query configuration
+  // state on a server as well as handshake state on a client. However, whether
+  // |ssl| is a client or server is not known until explicitly configured with
+  // |SSL_set_connect_state|. If |do_handshake| is NULL, |ssl| is in an
+  // indeterminate mode and |ssl->server| is unset.
+  if (ssl->do_handshake != NULL && !ssl->server) {
+    if (ssl->s3->hs != NULL) {
+      return buffer_names_to_x509(ssl->s3->hs->ca_names.get(),
+                                  &ssl->s3->hs->cached_x509_ca_names);
+    }
+
+    return NULL;
+  }
+
+  if (ssl->config->client_CA != NULL) {
+    return buffer_names_to_x509(
+        ssl->config->client_CA.get(),
+        (STACK_OF(X509_NAME) **)&ssl->config->cached_x509_client_CA);
+  }
+  return SSL_CTX_get_client_CA_list(ssl->ctx.get());
+}
+
+STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx) {
+  check_ssl_ctx_x509_method(ctx);
+  // This is a logically const operation that may be called on multiple threads,
+  // so it needs to lock around updating |cached_x509_client_CA|.
+  MutexWriteLock lock(const_cast<CRYPTO_MUTEX *>(&ctx->lock));
+  return buffer_names_to_x509(
+      ctx->client_CA.get(),
+      const_cast<STACK_OF(X509_NAME) **>(&ctx->cached_x509_client_CA));
+}
+
+static int add_client_CA(UniquePtr<STACK_OF(CRYPTO_BUFFER)> *names, X509 *x509,
+                         CRYPTO_BUFFER_POOL *pool) {
+  if (x509 == NULL) {
+    return 0;
+  }
+
+  uint8_t *outp = NULL;
+  int len = i2d_X509_NAME(X509_get_subject_name(x509), &outp);
+  if (len < 0) {
+    return 0;
+  }
+
+  UniquePtr<CRYPTO_BUFFER> buffer(CRYPTO_BUFFER_new(outp, len, pool));
+  OPENSSL_free(outp);
+  if (!buffer) {
+    return 0;
+  }
+
+  int alloced = 0;
+  if (*names == nullptr) {
+    names->reset(sk_CRYPTO_BUFFER_new_null());
+    alloced = 1;
+
+    if (*names == NULL) {
+      return 0;
+    }
+  }
+
+  if (!PushToStack(names->get(), std::move(buffer))) {
+    if (alloced) {
+      names->reset();
+    }
+    return 0;
+  }
+
+  return 1;
+}
+
+int SSL_add_client_CA(SSL *ssl, X509 *x509) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  if (!add_client_CA(&ssl->config->client_CA, x509, ssl->ctx->pool)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_ssl_flush_cached_client_CA(ssl->config.get());
+  return 1;
+}
+
+int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) {
+  check_ssl_ctx_x509_method(ctx);
+  if (!add_client_CA(&ctx->client_CA, x509, ctx->pool)) {
+    return 0;
+  }
+
+  ssl_crypto_x509_ssl_ctx_flush_cached_client_CA(ctx);
+  return 1;
+}
+
+static int do_client_cert_cb(SSL *ssl, void *arg) {
+  // Should only be called during handshake, but check to be sure.
+  if (!ssl->config) {
+    assert(ssl->config);
+    return -1;
+  }
+
+  if (ssl_has_certificate(ssl->s3->hs.get()) ||
+      ssl->ctx->client_cert_cb == NULL) {
+    return 1;
+  }
+
+  X509 *x509 = NULL;
+  EVP_PKEY *pkey = NULL;
+  int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey);
+  if (ret < 0) {
+    return -1;
+  }
+  UniquePtr<X509> free_x509(x509);
+  UniquePtr<EVP_PKEY> free_pkey(pkey);
+
+  if (ret != 0) {
+    if (!SSL_use_certificate(ssl, x509) ||
+        !SSL_use_PrivateKey(ssl, pkey)) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*cb)(SSL *ssl,
+                                                        X509 **out_x509,
+                                                        EVP_PKEY **out_pkey)) {
+  check_ssl_ctx_x509_method(ctx);
+  // Emulate the old client certificate callback with the new one.
+  SSL_CTX_set_cert_cb(ctx, do_client_cert_cb, NULL);
+  ctx->client_cert_cb = cb;
+}
+
+static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store,
+                          int take_ref) {
+  X509_STORE_free(*store_ptr);
+  *store_ptr = new_store;
+
+  if (new_store != NULL && take_ref) {
+    X509_STORE_up_ref(new_store);
+  }
+
+  return 1;
+}
+
+int SSL_get_ex_data_X509_STORE_CTX_idx(void) {
+  // The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the
+  // reserved app_data slot. Before ex_data was introduced, app_data was used.
+  // Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data|
+  // works.
+  return 0;
+}
+
+int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  return set_cert_store(&ctx->cert->verify_store, store, 0);
+}
+
+int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
+  check_ssl_ctx_x509_method(ctx);
+  return set_cert_store(&ctx->cert->verify_store, store, 1);
+}
+
+int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_cert_store(&ssl->config->cert->verify_store, store, 0);
+}
+
+int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) {
+  check_ssl_x509_method(ssl);
+  if (!ssl->config) {
+    return 0;
+  }
+  return set_cert_store(&ssl->config->cert->verify_store, store, 1);
+}
+
+int SSL_alert_from_verify_result(long result) {
+  switch (result) {
+    case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+    case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+    case X509_V_ERR_INVALID_CA:
+    case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+    case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+    case X509_V_ERR_UNABLE_TO_GET_CRL:
+    case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+    case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+      return SSL_AD_UNKNOWN_CA;
+
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+    case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+    case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+    case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+    case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+    case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+    case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+    case X509_V_ERR_CERT_UNTRUSTED:
+    case X509_V_ERR_CERT_REJECTED:
+    case X509_V_ERR_HOSTNAME_MISMATCH:
+    case X509_V_ERR_EMAIL_MISMATCH:
+    case X509_V_ERR_IP_ADDRESS_MISMATCH:
+      return SSL_AD_BAD_CERTIFICATE;
+
+    case X509_V_ERR_CERT_SIGNATURE_FAILURE:
+    case X509_V_ERR_CRL_SIGNATURE_FAILURE:
+      return SSL_AD_DECRYPT_ERROR;
+
+    case X509_V_ERR_CERT_HAS_EXPIRED:
+    case X509_V_ERR_CERT_NOT_YET_VALID:
+    case X509_V_ERR_CRL_HAS_EXPIRED:
+    case X509_V_ERR_CRL_NOT_YET_VALID:
+      return SSL_AD_CERTIFICATE_EXPIRED;
+
+    case X509_V_ERR_CERT_REVOKED:
+      return SSL_AD_CERTIFICATE_REVOKED;
+
+    case X509_V_ERR_UNSPECIFIED:
+    case X509_V_ERR_OUT_OF_MEM:
+    case X509_V_ERR_INVALID_CALL:
+    case X509_V_ERR_STORE_LOOKUP:
+      return SSL_AD_INTERNAL_ERROR;
+
+    case X509_V_ERR_APPLICATION_VERIFICATION:
+      return SSL_AD_HANDSHAKE_FAILURE;
+
+    case X509_V_ERR_INVALID_PURPOSE:
+      return SSL_AD_UNSUPPORTED_CERTIFICATE;
+
+    default:
+      return SSL_AD_CERTIFICATE_UNKNOWN;
+  }
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc
new file mode 100644
index 0000000..7f8c3b7
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc	
@@ -0,0 +1,361 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/md5.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "../crypto/fipsmodule/tls/internal.h"
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool tls1_prf(const EVP_MD *digest, Span<uint8_t> out,
+              Span<const uint8_t> secret, Span<const char> label,
+              Span<const uint8_t> seed1, Span<const uint8_t> seed2) {
+  return 1 == CRYPTO_tls1_prf(digest, out.data(), out.size(), secret.data(),
+                              secret.size(), label.data(), label.size(),
+                              seed1.data(), seed1.size(), seed2.data(),
+                              seed2.size());
+}
+
+static bool get_key_block_lengths(const SSL *ssl, size_t *out_mac_secret_len,
+                                  size_t *out_key_len, size_t *out_iv_len,
+                                  const SSL_CIPHER *cipher) {
+  const EVP_AEAD *aead = NULL;
+  if (!ssl_cipher_get_evp_aead(&aead, out_mac_secret_len, out_iv_len, cipher,
+                               ssl_protocol_version(ssl), SSL_is_dtls(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
+    return false;
+  }
+
+  *out_key_len = EVP_AEAD_key_length(aead);
+  if (*out_mac_secret_len > 0) {
+    // For "stateful" AEADs (i.e. compatibility with pre-AEAD cipher suites) the
+    // key length reported by |EVP_AEAD_key_length| will include the MAC key
+    // bytes and initial implicit IV.
+    if (*out_key_len < *out_mac_secret_len + *out_iv_len) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    *out_key_len -= *out_mac_secret_len + *out_iv_len;
+  }
+
+  return true;
+}
+
+int tls1_configure_aead(SSL *ssl, evp_aead_direction_t direction,
+                        Array<uint8_t> *key_block_cache,
+                        const SSL_CIPHER *cipher,
+                        Span<const uint8_t> iv_override) {
+  size_t mac_secret_len, key_len, iv_len;
+  if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &iv_len, cipher)) {
+    return 0;
+  }
+
+  // Ensure that |key_block_cache| is set up.
+  const size_t key_block_size = 2 * (mac_secret_len + key_len + iv_len);
+  if (key_block_cache->empty()) {
+    if (!key_block_cache->Init(key_block_size) ||
+        !SSL_generate_key_block(ssl, key_block_cache->data(), key_block_size)) {
+      return 0;
+    }
+  }
+  assert(key_block_cache->size() == key_block_size);
+
+  Span<const uint8_t> key_block = *key_block_cache;
+  Span<const uint8_t> mac_secret, key, iv;
+  if (direction == (ssl->server ? evp_aead_open : evp_aead_seal)) {
+    // Use the client write (server read) keys.
+    mac_secret = key_block.subspan(0, mac_secret_len);
+    key = key_block.subspan(2 * mac_secret_len, key_len);
+    iv = key_block.subspan(2 * mac_secret_len + 2 * key_len, iv_len);
+  } else {
+    // Use the server write (client read) keys.
+    mac_secret = key_block.subspan(mac_secret_len, mac_secret_len);
+    key = key_block.subspan(2 * mac_secret_len + key_len, key_len);
+    iv = key_block.subspan(2 * mac_secret_len + 2 * key_len + iv_len, iv_len);
+  }
+
+  if (!iv_override.empty()) {
+    if (iv_override.size() != iv_len) {
+      return 0;
+    }
+    iv = iv_override;
+  }
+
+  UniquePtr<SSLAEADContext> aead_ctx = SSLAEADContext::Create(
+      direction, ssl->version, SSL_is_dtls(ssl), cipher, key, mac_secret, iv);
+  if (!aead_ctx) {
+    return 0;
+  }
+
+  if (direction == evp_aead_open) {
+    return ssl->method->set_read_state(ssl, std::move(aead_ctx));
+  }
+
+  return ssl->method->set_write_state(ssl, std::move(aead_ctx));
+}
+
+int tls1_change_cipher_state(SSL_HANDSHAKE *hs,
+                             evp_aead_direction_t direction) {
+  return tls1_configure_aead(hs->ssl, direction, &hs->key_block,
+                             hs->new_cipher, {});
+}
+
+int tls1_generate_master_secret(SSL_HANDSHAKE *hs, uint8_t *out,
+                                Span<const uint8_t> premaster) {
+  static const char kMasterSecretLabel[] = "master secret";
+  static const char kExtendedMasterSecretLabel[] = "extended master secret";
+
+  const SSL *ssl = hs->ssl;
+  auto out_span = MakeSpan(out, SSL3_MASTER_SECRET_SIZE);
+  if (hs->extended_master_secret) {
+    auto label = MakeConstSpan(kExtendedMasterSecretLabel,
+                               sizeof(kExtendedMasterSecretLabel) - 1);
+    uint8_t digests[EVP_MAX_MD_SIZE];
+    size_t digests_len;
+    if (!hs->transcript.GetHash(digests, &digests_len) ||
+        !tls1_prf(hs->transcript.Digest(), out_span, premaster, label,
+                  MakeConstSpan(digests, digests_len), {})) {
+      return 0;
+    }
+  } else {
+    auto label =
+        MakeConstSpan(kMasterSecretLabel, sizeof(kMasterSecretLabel) - 1);
+    if (!tls1_prf(hs->transcript.Digest(), out_span, premaster, label,
+                  ssl->s3->client_random, ssl->s3->server_random)) {
+      return 0;
+    }
+  }
+
+  return SSL3_MASTER_SECRET_SIZE;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+size_t SSL_get_key_block_len(const SSL *ssl) {
+  size_t mac_secret_len, key_len, fixed_iv_len;
+  if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &fixed_iv_len,
+                             SSL_get_current_cipher(ssl))) {
+    ERR_clear_error();
+    return 0;
+  }
+
+  return 2 * (mac_secret_len + key_len + fixed_iv_len);
+}
+
+int SSL_generate_key_block(const SSL *ssl, uint8_t *out, size_t out_len) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  auto out_span = MakeSpan(out, out_len);
+  auto master_key =
+      MakeConstSpan(session->master_key, session->master_key_length);
+  static const char kLabel[] = "key expansion";
+  auto label = MakeConstSpan(kLabel, sizeof(kLabel) - 1);
+
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  return tls1_prf(digest, out_span, master_key, label, ssl->s3->server_random,
+                  ssl->s3->client_random);
+}
+
+int SSL_export_keying_material(SSL *ssl, uint8_t *out, size_t out_len,
+                               const char *label, size_t label_len,
+                               const uint8_t *context, size_t context_len,
+                               int use_context) {
+  // Exporters may be used in False Start and server 0-RTT, where the handshake
+  // has progressed enough. Otherwise, they may not be used during a handshake.
+  if (SSL_in_init(ssl) &&
+      !SSL_in_false_start(ssl) &&
+      !(SSL_is_server(ssl) && SSL_in_early_data(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return 0;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    if (!use_context) {
+      context = nullptr;
+      context_len = 0;
+    }
+    return tls13_export_keying_material(
+        ssl, MakeSpan(out, out_len),
+        MakeConstSpan(ssl->s3->exporter_secret, ssl->s3->exporter_secret_len),
+        MakeConstSpan(label, label_len), MakeConstSpan(context, context_len));
+  }
+
+  size_t seed_len = 2 * SSL3_RANDOM_SIZE;
+  if (use_context) {
+    if (context_len >= 1u << 16) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return 0;
+    }
+    seed_len += 2 + context_len;
+  }
+  Array<uint8_t> seed;
+  if (!seed.Init(seed_len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(seed.data(), ssl->s3->client_random, SSL3_RANDOM_SIZE);
+  OPENSSL_memcpy(seed.data() + SSL3_RANDOM_SIZE, ssl->s3->server_random,
+                 SSL3_RANDOM_SIZE);
+  if (use_context) {
+    seed[2 * SSL3_RANDOM_SIZE] = static_cast<uint8_t>(context_len >> 8);
+    seed[2 * SSL3_RANDOM_SIZE + 1] = static_cast<uint8_t>(context_len);
+    OPENSSL_memcpy(seed.data() + 2 * SSL3_RANDOM_SIZE + 2, context, context_len);
+  }
+
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  return tls1_prf(
+      digest, MakeSpan(out, out_len),
+      MakeConstSpan(session->master_key, session->master_key_length),
+      MakeConstSpan(label, label_len), seed, {});
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc.grpc_back
new file mode 100644
index 0000000..4c2fffb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_enc.cc.grpc_back	
@@ -0,0 +1,361 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+#include <openssl/md5.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "../crypto/fipsmodule/tls/internal.h"
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+bool tls1_prf(const EVP_MD *digest, Span<uint8_t> out,
+              Span<const uint8_t> secret, Span<const char> label,
+              Span<const uint8_t> seed1, Span<const uint8_t> seed2) {
+  return 1 == CRYPTO_tls1_prf(digest, out.data(), out.size(), secret.data(),
+                              secret.size(), label.data(), label.size(),
+                              seed1.data(), seed1.size(), seed2.data(),
+                              seed2.size());
+}
+
+static bool get_key_block_lengths(const SSL *ssl, size_t *out_mac_secret_len,
+                                  size_t *out_key_len, size_t *out_iv_len,
+                                  const SSL_CIPHER *cipher) {
+  const EVP_AEAD *aead = NULL;
+  if (!ssl_cipher_get_evp_aead(&aead, out_mac_secret_len, out_iv_len, cipher,
+                               ssl_protocol_version(ssl), SSL_is_dtls(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
+    return false;
+  }
+
+  *out_key_len = EVP_AEAD_key_length(aead);
+  if (*out_mac_secret_len > 0) {
+    // For "stateful" AEADs (i.e. compatibility with pre-AEAD cipher suites) the
+    // key length reported by |EVP_AEAD_key_length| will include the MAC key
+    // bytes and initial implicit IV.
+    if (*out_key_len < *out_mac_secret_len + *out_iv_len) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    *out_key_len -= *out_mac_secret_len + *out_iv_len;
+  }
+
+  return true;
+}
+
+int tls1_configure_aead(SSL *ssl, evp_aead_direction_t direction,
+                        Array<uint8_t> *key_block_cache,
+                        const SSL_CIPHER *cipher,
+                        Span<const uint8_t> iv_override) {
+  size_t mac_secret_len, key_len, iv_len;
+  if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &iv_len, cipher)) {
+    return 0;
+  }
+
+  // Ensure that |key_block_cache| is set up.
+  const size_t key_block_size = 2 * (mac_secret_len + key_len + iv_len);
+  if (key_block_cache->empty()) {
+    if (!key_block_cache->Init(key_block_size) ||
+        !SSL_generate_key_block(ssl, key_block_cache->data(), key_block_size)) {
+      return 0;
+    }
+  }
+  assert(key_block_cache->size() == key_block_size);
+
+  Span<const uint8_t> key_block = *key_block_cache;
+  Span<const uint8_t> mac_secret, key, iv;
+  if (direction == (ssl->server ? evp_aead_open : evp_aead_seal)) {
+    // Use the client write (server read) keys.
+    mac_secret = key_block.subspan(0, mac_secret_len);
+    key = key_block.subspan(2 * mac_secret_len, key_len);
+    iv = key_block.subspan(2 * mac_secret_len + 2 * key_len, iv_len);
+  } else {
+    // Use the server write (client read) keys.
+    mac_secret = key_block.subspan(mac_secret_len, mac_secret_len);
+    key = key_block.subspan(2 * mac_secret_len + key_len, key_len);
+    iv = key_block.subspan(2 * mac_secret_len + 2 * key_len + iv_len, iv_len);
+  }
+
+  if (!iv_override.empty()) {
+    if (iv_override.size() != iv_len) {
+      return 0;
+    }
+    iv = iv_override;
+  }
+
+  UniquePtr<SSLAEADContext> aead_ctx = SSLAEADContext::Create(
+      direction, ssl->version, SSL_is_dtls(ssl), cipher, key, mac_secret, iv);
+  if (!aead_ctx) {
+    return 0;
+  }
+
+  if (direction == evp_aead_open) {
+    return ssl->method->set_read_state(ssl, std::move(aead_ctx));
+  }
+
+  return ssl->method->set_write_state(ssl, std::move(aead_ctx));
+}
+
+int tls1_change_cipher_state(SSL_HANDSHAKE *hs,
+                             evp_aead_direction_t direction) {
+  return tls1_configure_aead(hs->ssl, direction, &hs->key_block,
+                             hs->new_cipher, {});
+}
+
+int tls1_generate_master_secret(SSL_HANDSHAKE *hs, uint8_t *out,
+                                Span<const uint8_t> premaster) {
+  static const char kMasterSecretLabel[] = "master secret";
+  static const char kExtendedMasterSecretLabel[] = "extended master secret";
+
+  const SSL *ssl = hs->ssl;
+  auto out_span = MakeSpan(out, SSL3_MASTER_SECRET_SIZE);
+  if (hs->extended_master_secret) {
+    auto label = MakeConstSpan(kExtendedMasterSecretLabel,
+                               sizeof(kExtendedMasterSecretLabel) - 1);
+    uint8_t digests[EVP_MAX_MD_SIZE];
+    size_t digests_len;
+    if (!hs->transcript.GetHash(digests, &digests_len) ||
+        !tls1_prf(hs->transcript.Digest(), out_span, premaster, label,
+                  MakeConstSpan(digests, digests_len), {})) {
+      return 0;
+    }
+  } else {
+    auto label =
+        MakeConstSpan(kMasterSecretLabel, sizeof(kMasterSecretLabel) - 1);
+    if (!tls1_prf(hs->transcript.Digest(), out_span, premaster, label,
+                  ssl->s3->client_random, ssl->s3->server_random)) {
+      return 0;
+    }
+  }
+
+  return SSL3_MASTER_SECRET_SIZE;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+size_t SSL_get_key_block_len(const SSL *ssl) {
+  size_t mac_secret_len, key_len, fixed_iv_len;
+  if (!get_key_block_lengths(ssl, &mac_secret_len, &key_len, &fixed_iv_len,
+                             SSL_get_current_cipher(ssl))) {
+    ERR_clear_error();
+    return 0;
+  }
+
+  return 2 * (mac_secret_len + key_len + fixed_iv_len);
+}
+
+int SSL_generate_key_block(const SSL *ssl, uint8_t *out, size_t out_len) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  auto out_span = MakeSpan(out, out_len);
+  auto master_key =
+      MakeConstSpan(session->master_key, session->master_key_length);
+  static const char kLabel[] = "key expansion";
+  auto label = MakeConstSpan(kLabel, sizeof(kLabel) - 1);
+
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  return tls1_prf(digest, out_span, master_key, label, ssl->s3->server_random,
+                  ssl->s3->client_random);
+}
+
+int SSL_export_keying_material(SSL *ssl, uint8_t *out, size_t out_len,
+                               const char *label, size_t label_len,
+                               const uint8_t *context, size_t context_len,
+                               int use_context) {
+  // Exporters may be used in False Start and server 0-RTT, where the handshake
+  // has progressed enough. Otherwise, they may not be used during a handshake.
+  if (SSL_in_init(ssl) &&
+      !SSL_in_false_start(ssl) &&
+      !(SSL_is_server(ssl) && SSL_in_early_data(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_HANDSHAKE_NOT_COMPLETE);
+    return 0;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    if (!use_context) {
+      context = nullptr;
+      context_len = 0;
+    }
+    return tls13_export_keying_material(
+        ssl, MakeSpan(out, out_len),
+        MakeConstSpan(ssl->s3->exporter_secret, ssl->s3->exporter_secret_len),
+        MakeConstSpan(label, label_len), MakeConstSpan(context, context_len));
+  }
+
+  size_t seed_len = 2 * SSL3_RANDOM_SIZE;
+  if (use_context) {
+    if (context_len >= 1u << 16) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+      return 0;
+    }
+    seed_len += 2 + context_len;
+  }
+  Array<uint8_t> seed;
+  if (!seed.Init(seed_len)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return 0;
+  }
+
+  OPENSSL_memcpy(seed.data(), ssl->s3->client_random, SSL3_RANDOM_SIZE);
+  OPENSSL_memcpy(seed.data() + SSL3_RANDOM_SIZE, ssl->s3->server_random,
+                 SSL3_RANDOM_SIZE);
+  if (use_context) {
+    seed[2 * SSL3_RANDOM_SIZE] = static_cast<uint8_t>(context_len >> 8);
+    seed[2 * SSL3_RANDOM_SIZE + 1] = static_cast<uint8_t>(context_len);
+    OPENSSL_memcpy(seed.data() + 2 * SSL3_RANDOM_SIZE + 2, context, context_len);
+  }
+
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  return tls1_prf(
+      digest, MakeSpan(out, out_len),
+      MakeConstSpan(session->master_key, session->master_key_length),
+      MakeConstSpan(label, label_len), seed, {});
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc
new file mode 100644
index 0000000..013acaa
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc	
@@ -0,0 +1,3876 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/chacha.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/evp.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/nid.h>
+#include <openssl_grpc/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool ssl_check_clienthello_tlsext(SSL_HANDSHAKE *hs);
+
+static int compare_uint16_t(const void *p1, const void *p2) {
+  uint16_t u1 = *((const uint16_t *)p1);
+  uint16_t u2 = *((const uint16_t *)p2);
+  if (u1 < u2) {
+    return -1;
+  } else if (u1 > u2) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+// Per http://tools.ietf.org/html/rfc5246#section-7.4.1.4, there may not be
+// more than one extension of the same type in a ClientHello or ServerHello.
+// This function does an initial scan over the extensions block to filter those
+// out.
+static bool tls1_check_duplicate_extensions(const CBS *cbs) {
+  // First pass: count the extensions.
+  size_t num_extensions = 0;
+  CBS extensions = *cbs;
+  while (CBS_len(&extensions) > 0) {
+    uint16_t type;
+    CBS extension;
+
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      return false;
+    }
+
+    num_extensions++;
+  }
+
+  if (num_extensions == 0) {
+    return true;
+  }
+
+  Array<uint16_t> extension_types;
+  if (!extension_types.Init(num_extensions)) {
+    return false;
+  }
+
+  // Second pass: gather the extension types.
+  extensions = *cbs;
+  for (size_t i = 0; i < extension_types.size(); i++) {
+    CBS extension;
+
+    if (!CBS_get_u16(&extensions, &extension_types[i]) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      // This should not happen.
+      return false;
+    }
+  }
+  assert(CBS_len(&extensions) == 0);
+
+  // Sort the extensions and make sure there are no duplicates.
+  qsort(extension_types.data(), extension_types.size(), sizeof(uint16_t),
+        compare_uint16_t);
+  for (size_t i = 1; i < num_extensions; i++) {
+    if (extension_types[i - 1] == extension_types[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool is_post_quantum_group(uint16_t id) {
+  return id == SSL_CURVE_CECPQ2;
+}
+
+bool ssl_client_hello_init(const SSL *ssl, SSL_CLIENT_HELLO *out,
+                           const SSLMessage &msg) {
+  OPENSSL_memset(out, 0, sizeof(*out));
+  out->ssl = const_cast<SSL *>(ssl);
+  out->client_hello = CBS_data(&msg.body);
+  out->client_hello_len = CBS_len(&msg.body);
+
+  CBS client_hello, random, session_id;
+  CBS_init(&client_hello, out->client_hello, out->client_hello_len);
+  if (!CBS_get_u16(&client_hello, &out->version) ||
+      !CBS_get_bytes(&client_hello, &random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&client_hello, &session_id) ||
+      CBS_len(&session_id) > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return false;
+  }
+
+  out->random = CBS_data(&random);
+  out->random_len = CBS_len(&random);
+  out->session_id = CBS_data(&session_id);
+  out->session_id_len = CBS_len(&session_id);
+
+  // Skip past DTLS cookie
+  if (SSL_is_dtls(out->ssl)) {
+    CBS cookie;
+    if (!CBS_get_u8_length_prefixed(&client_hello, &cookie) ||
+        CBS_len(&cookie) > DTLS1_COOKIE_LENGTH) {
+      return false;
+    }
+  }
+
+  CBS cipher_suites, compression_methods;
+  if (!CBS_get_u16_length_prefixed(&client_hello, &cipher_suites) ||
+      CBS_len(&cipher_suites) < 2 || (CBS_len(&cipher_suites) & 1) != 0 ||
+      !CBS_get_u8_length_prefixed(&client_hello, &compression_methods) ||
+      CBS_len(&compression_methods) < 1) {
+    return false;
+  }
+
+  out->cipher_suites = CBS_data(&cipher_suites);
+  out->cipher_suites_len = CBS_len(&cipher_suites);
+  out->compression_methods = CBS_data(&compression_methods);
+  out->compression_methods_len = CBS_len(&compression_methods);
+
+  // If the ClientHello ends here then it's valid, but doesn't have any
+  // extensions.
+  if (CBS_len(&client_hello) == 0) {
+    out->extensions = NULL;
+    out->extensions_len = 0;
+    return true;
+  }
+
+  // Extract extensions and check it is valid.
+  CBS extensions;
+  if (!CBS_get_u16_length_prefixed(&client_hello, &extensions) ||
+      !tls1_check_duplicate_extensions(&extensions) ||
+      CBS_len(&client_hello) != 0) {
+    return false;
+  }
+
+  out->extensions = CBS_data(&extensions);
+  out->extensions_len = CBS_len(&extensions);
+
+  return true;
+}
+
+bool ssl_client_hello_get_extension(const SSL_CLIENT_HELLO *client_hello,
+                                    CBS *out, uint16_t extension_type) {
+  CBS extensions;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  while (CBS_len(&extensions) != 0) {
+    // Decode the next extension.
+    uint16_t type;
+    CBS extension;
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      return false;
+    }
+
+    if (type == extension_type) {
+      *out = extension;
+      return true;
+    }
+  }
+
+  return false;
+}
+
+static const uint16_t kDefaultGroups[] = {
+    SSL_CURVE_X25519,
+    SSL_CURVE_SECP256R1,
+    SSL_CURVE_SECP384R1,
+};
+
+Span<const uint16_t> tls1_get_grouplist(const SSL_HANDSHAKE *hs) {
+  if (!hs->config->supported_group_list.empty()) {
+    return hs->config->supported_group_list;
+  }
+  return Span<const uint16_t>(kDefaultGroups);
+}
+
+bool tls1_get_shared_group(SSL_HANDSHAKE *hs, uint16_t *out_group_id) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->server);
+
+  // Clients are not required to send a supported_groups extension. In this
+  // case, the server is free to pick any group it likes. See RFC 4492,
+  // section 4, paragraph 3.
+  //
+  // However, in the interests of compatibility, we will skip ECDH if the
+  // client didn't send an extension because we can't be sure that they'll
+  // support our favoured group. Thus we do not special-case an emtpy
+  // |peer_supported_group_list|.
+
+  Span<const uint16_t> groups = tls1_get_grouplist(hs);
+  Span<const uint16_t> pref, supp;
+  if (ssl->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
+    pref = groups;
+    supp = hs->peer_supported_group_list;
+  } else {
+    pref = hs->peer_supported_group_list;
+    supp = groups;
+  }
+
+  for (uint16_t pref_group : pref) {
+    for (uint16_t supp_group : supp) {
+      if (pref_group == supp_group &&
+          // CECPQ2(b) doesn't fit in the u8-length-prefixed ECPoint field in
+          // TLS 1.2 and below.
+          (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+           !is_post_quantum_group(pref_group))) {
+        *out_group_id = pref_group;
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+bool tls1_set_curves(Array<uint16_t> *out_group_ids, Span<const int> curves) {
+  Array<uint16_t> group_ids;
+  if (!group_ids.Init(curves.size())) {
+    return false;
+  }
+
+  for (size_t i = 0; i < curves.size(); i++) {
+    if (!ssl_nid_to_group_id(&group_ids[i], curves[i])) {
+      return false;
+    }
+  }
+
+  *out_group_ids = std::move(group_ids);
+  return true;
+}
+
+bool tls1_set_curves_list(Array<uint16_t> *out_group_ids, const char *curves) {
+  // Count the number of curves in the list.
+  size_t count = 0;
+  const char *ptr = curves, *col;
+  do {
+    col = strchr(ptr, ':');
+    count++;
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  Array<uint16_t> group_ids;
+  if (!group_ids.Init(count)) {
+    return false;
+  }
+
+  size_t i = 0;
+  ptr = curves;
+  do {
+    col = strchr(ptr, ':');
+    if (!ssl_name_to_group_id(&group_ids[i++], ptr,
+                              col ? (size_t)(col - ptr) : strlen(ptr))) {
+      return false;
+    }
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  assert(i == count);
+  *out_group_ids = std::move(group_ids);
+  return true;
+}
+
+bool tls1_check_group_id(const SSL_HANDSHAKE *hs, uint16_t group_id) {
+  if (is_post_quantum_group(group_id) &&
+      ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // CECPQ2(b) requires TLS 1.3.
+    return false;
+  }
+
+  for (uint16_t supported : tls1_get_grouplist(hs)) {
+    if (supported == group_id) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// kVerifySignatureAlgorithms is the default list of accepted signature
+// algorithms for verifying.
+static const uint16_t kVerifySignatureAlgorithms[] = {
+    // List our preferred algorithms first.
+    SSL_SIGN_ED25519,
+    SSL_SIGN_ECDSA_SECP256R1_SHA256,
+    SSL_SIGN_RSA_PSS_RSAE_SHA256,
+    SSL_SIGN_RSA_PKCS1_SHA256,
+
+    // Larger hashes are acceptable.
+    SSL_SIGN_ECDSA_SECP384R1_SHA384,
+    SSL_SIGN_RSA_PSS_RSAE_SHA384,
+    SSL_SIGN_RSA_PKCS1_SHA384,
+
+    SSL_SIGN_RSA_PSS_RSAE_SHA512,
+    SSL_SIGN_RSA_PKCS1_SHA512,
+
+    // For now, SHA-1 is still accepted but least preferable.
+    SSL_SIGN_RSA_PKCS1_SHA1,
+};
+
+// kSignSignatureAlgorithms is the default list of supported signature
+// algorithms for signing.
+static const uint16_t kSignSignatureAlgorithms[] = {
+    // List our preferred algorithms first.
+    SSL_SIGN_ED25519,
+    SSL_SIGN_ECDSA_SECP256R1_SHA256,
+    SSL_SIGN_RSA_PSS_RSAE_SHA256,
+    SSL_SIGN_RSA_PKCS1_SHA256,
+
+    // If needed, sign larger hashes.
+    //
+    // TODO(davidben): Determine which of these may be pruned.
+    SSL_SIGN_ECDSA_SECP384R1_SHA384,
+    SSL_SIGN_RSA_PSS_RSAE_SHA384,
+    SSL_SIGN_RSA_PKCS1_SHA384,
+
+    SSL_SIGN_ECDSA_SECP521R1_SHA512,
+    SSL_SIGN_RSA_PSS_RSAE_SHA512,
+    SSL_SIGN_RSA_PKCS1_SHA512,
+
+    // If the peer supports nothing else, sign with SHA-1.
+    SSL_SIGN_ECDSA_SHA1,
+    SSL_SIGN_RSA_PKCS1_SHA1,
+};
+
+struct SSLSignatureAlgorithmList {
+  bool Next(uint16_t *out) {
+    while (!list.empty()) {
+      uint16_t sigalg = list[0];
+      list = list.subspan(1);
+      if (skip_ed25519 && sigalg == SSL_SIGN_ED25519) {
+        continue;
+      }
+      *out = sigalg;
+      return true;
+    }
+    return false;
+  }
+
+  Span<const uint16_t> list;
+  bool skip_ed25519 = false;
+};
+
+static SSLSignatureAlgorithmList tls12_get_verify_sigalgs(const SSL *ssl) {
+  SSLSignatureAlgorithmList ret;
+  if (!ssl->config->verify_sigalgs.empty()) {
+    ret.list = ssl->config->verify_sigalgs;
+  } else {
+    ret.list = kVerifySignatureAlgorithms;
+    ret.skip_ed25519 = !ssl->ctx->ed25519_enabled;
+  }
+  return ret;
+}
+
+bool tls12_add_verify_sigalgs(const SSL *ssl, CBB *out) {
+  SSLSignatureAlgorithmList list = tls12_get_verify_sigalgs(ssl);
+  uint16_t sigalg;
+  while (list.Next(&sigalg)) {
+    if (!CBB_add_u16(out, sigalg)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool tls12_check_peer_sigalg(const SSL *ssl, uint8_t *out_alert,
+                             uint16_t sigalg) {
+  SSLSignatureAlgorithmList list = tls12_get_verify_sigalgs(ssl);
+  uint16_t verify_sigalg;
+  while (list.Next(&verify_sigalg)) {
+    if (verify_sigalg == sigalg) {
+      return true;
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SIGNATURE_TYPE);
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+// tls_extension represents a TLS extension that is handled internally. The
+// |init| function is called for each handshake, before any other functions of
+// the extension. Then the add and parse callbacks are called as needed.
+//
+// The parse callbacks receive a |CBS| that contains the contents of the
+// extension (i.e. not including the type and length bytes). If an extension is
+// not received then the parse callbacks will be called with a NULL CBS so that
+// they can do any processing needed to handle the absence of an extension.
+//
+// The add callbacks receive a |CBB| to which the extension can be appended but
+// the function is responsible for appending the type and length bytes too.
+//
+// All callbacks return true for success and false for error. If a parse
+// function returns zero then a fatal alert with value |*out_alert| will be
+// sent. If |*out_alert| isn't set, then a |decode_error| alert will be sent.
+struct tls_extension {
+  uint16_t value;
+  void (*init)(SSL_HANDSHAKE *hs);
+
+  bool (*add_clienthello)(SSL_HANDSHAKE *hs, CBB *out);
+  bool (*parse_serverhello)(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                            CBS *contents);
+
+  bool (*parse_clienthello)(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                            CBS *contents);
+  bool (*add_serverhello)(SSL_HANDSHAKE *hs, CBB *out);
+};
+
+static bool forbid_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                    CBS *contents) {
+  if (contents != NULL) {
+    // Servers MUST NOT send this extension.
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+    return false;
+  }
+
+  return true;
+}
+
+static bool ignore_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                    CBS *contents) {
+  // This extension from the client is handled elsewhere.
+  return true;
+}
+
+static bool dont_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  return true;
+}
+
+// Server name indication (SNI).
+//
+// https://tools.ietf.org/html/rfc6066#section-3.
+
+static bool ext_sni_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->hostname == nullptr) {
+    return true;
+  }
+
+  CBB contents, server_name_list, name;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_server_name) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &server_name_list) ||
+      !CBB_add_u8(&server_name_list, TLSEXT_NAMETYPE_host_name) ||
+      !CBB_add_u16_length_prefixed(&server_name_list, &name) ||
+      !CBB_add_bytes(&name, (const uint8_t *)ssl->hostname.get(),
+                     strlen(ssl->hostname.get())) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sni_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  // The server may acknowledge SNI with an empty extension. We check the syntax
+  // but otherwise ignore this signal.
+  return contents == NULL || CBS_len(contents) == 0;
+}
+
+static bool ext_sni_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  // SNI has already been parsed earlier in the handshake. See |extract_sni|.
+  return true;
+}
+
+static bool ext_sni_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (hs->ssl->s3->session_reused ||
+      !hs->should_ack_sni) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_server_name) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Renegotiation indication.
+//
+// https://tools.ietf.org/html/rfc5746
+
+static bool ext_ri_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation indication is not necessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_client_finished_len != 0));
+
+  CBB contents, prev_finished;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_renegotiate) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &prev_finished) ||
+      !CBB_add_bytes(&prev_finished, ssl->s3->previous_client_finished,
+                     ssl->s3->previous_client_finished_len) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ri_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                     CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents != NULL && ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // Servers may not switch between omitting the extension and supporting it.
+  // See RFC 5746, sections 3.5 and 4.2.
+  if (ssl->s3->initial_handshake_complete &&
+      (contents != NULL) != ssl->s3->send_connection_binding) {
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    return false;
+  }
+
+  if (contents == NULL) {
+    // Strictly speaking, if we want to avoid an attack we should *always* see
+    // RI even on initial ServerHello because the client doesn't see any
+    // renegotiation during an attack. However this would mean we could not
+    // connect to any server which doesn't support RI.
+    //
+    // OpenSSL has |SSL_OP_LEGACY_SERVER_CONNECT| to control this, but in
+    // practical terms every client sets it so it's just assumed here.
+    return true;
+  }
+
+  const size_t expected_len = ssl->s3->previous_client_finished_len +
+                              ssl->s3->previous_server_finished_len;
+
+  // Check for logic errors
+  assert(!expected_len || ssl->s3->previous_client_finished_len);
+  assert(!expected_len || ssl->s3->previous_server_finished_len);
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_client_finished_len != 0));
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_server_finished_len != 0));
+
+  // Parse out the extension contents.
+  CBS renegotiated_connection;
+  if (!CBS_get_u8_length_prefixed(contents, &renegotiated_connection) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_ENCODING_ERR);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // Check that the extension matches.
+  if (CBS_len(&renegotiated_connection) != expected_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  const uint8_t *d = CBS_data(&renegotiated_connection);
+  bool ok = CRYPTO_memcmp(d, ssl->s3->previous_client_finished,
+                          ssl->s3->previous_client_finished_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+#endif
+  if (!ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+  d += ssl->s3->previous_client_finished_len;
+
+  ok = CRYPTO_memcmp(d, ssl->s3->previous_server_finished,
+                     ssl->s3->previous_server_finished_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+#endif
+  if (!ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+  ssl->s3->send_connection_binding = true;
+
+  return true;
+}
+
+static bool ext_ri_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                     CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation isn't supported as a server so this function should never be
+  // called after the initial handshake.
+  assert(!ssl->s3->initial_handshake_complete);
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS renegotiated_connection;
+  if (!CBS_get_u8_length_prefixed(contents, &renegotiated_connection) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_ENCODING_ERR);
+    return false;
+  }
+
+  // Check that the extension matches. We do not support renegotiation as a
+  // server, so this must be empty.
+  if (CBS_len(&renegotiated_connection) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  ssl->s3->send_connection_binding = true;
+
+  return true;
+}
+
+static bool ext_ri_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation isn't supported as a server so this function should never be
+  // called after the initial handshake.
+  assert(!ssl->s3->initial_handshake_complete);
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_renegotiate) ||
+      !CBB_add_u16(out, 1 /* length */) ||
+      !CBB_add_u8(out, 0 /* empty renegotiation info */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Extended Master Secret.
+//
+// https://tools.ietf.org/html/rfc7627
+
+static bool ext_ems_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  // Extended master secret is not necessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_extended_master_secret) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ems_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+
+  if (contents != NULL) {
+    if (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+        CBS_len(contents) != 0) {
+      return false;
+    }
+
+    hs->extended_master_secret = true;
+  }
+
+  // Whether EMS is negotiated may not change on renegotiation.
+  if (ssl->s3->established_session != nullptr &&
+      hs->extended_master_secret !=
+          !!ssl->s3->established_session->extended_master_secret) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_EMS_MISMATCH);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ems_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->extended_master_secret = true;
+  return true;
+}
+
+static bool ext_ems_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->extended_master_secret) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_extended_master_secret) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Session tickets.
+//
+// https://tools.ietf.org/html/rfc5077
+
+static bool ext_ticket_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // TLS 1.3 uses a different ticket extension.
+  if (hs->min_version >= TLS1_3_VERSION ||
+      SSL_get_options(ssl) & SSL_OP_NO_TICKET) {
+    return true;
+  }
+
+  Span<const uint8_t> ticket;
+
+  // Renegotiation does not participate in session resumption. However, still
+  // advertise the extension to avoid potentially breaking servers which carry
+  // over the state from the previous handshake, such as OpenSSL servers
+  // without upstream's 3c3f0259238594d77264a78944d409f2127642c4.
+  if (!ssl->s3->initial_handshake_complete &&
+      ssl->session != nullptr &&
+      !ssl->session->ticket.empty() &&
+      // Don't send TLS 1.3 session tickets in the ticket extension.
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    ticket = ssl->session->ticket;
+  }
+
+  CBB ticket_cbb;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_session_ticket) ||
+      !CBB_add_u16_length_prefixed(out, &ticket_cbb) ||
+      !CBB_add_bytes(&ticket_cbb, ticket.data(), ticket.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ticket_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                         CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // If |SSL_OP_NO_TICKET| is set then no extension will have been sent and
+  // this function should never be called, even if the server tries to send the
+  // extension.
+  assert((SSL_get_options(ssl) & SSL_OP_NO_TICKET) == 0);
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->ticket_expected = true;
+  return true;
+}
+
+static bool ext_ticket_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ticket_expected) {
+    return true;
+  }
+
+  // If |SSL_OP_NO_TICKET| is set, |ticket_expected| should never be true.
+  assert((SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) == 0);
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_session_ticket) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Signature Algorithms.
+//
+// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+
+static bool ext_sigalgs_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents, sigalgs_cbb;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_signature_algorithms) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &sigalgs_cbb) ||
+      !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sigalgs_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                          CBS *contents) {
+  hs->peer_sigalgs.Reset();
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS supported_signature_algorithms;
+  if (!CBS_get_u16_length_prefixed(contents, &supported_signature_algorithms) ||
+      CBS_len(contents) != 0 ||
+      !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// OCSP Stapling.
+//
+// https://tools.ietf.org/html/rfc6066#section-8
+
+static bool ext_ocsp_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->config->ocsp_stapling_enabled) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_status_request) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8(&contents, TLSEXT_STATUSTYPE_ocsp) ||
+      !CBB_add_u16(&contents, 0 /* empty responder ID list */) ||
+      !CBB_add_u16(&contents, 0 /* empty request extensions */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ocsp_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // TLS 1.3 OCSP responses are included in the Certificate extensions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // OCSP stapling is forbidden on non-certificate ciphers.
+  if (CBS_len(contents) != 0 ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    return false;
+  }
+
+  // Note this does not check for resumption in TLS 1.2. Sending
+  // status_request here does not make sense, but OpenSSL does so and the
+  // specification does not say anything. Tolerate it but ignore it.
+
+  hs->certificate_status_expected = true;
+  return true;
+}
+
+static bool ext_ocsp_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  uint8_t status_type;
+  if (!CBS_get_u8(contents, &status_type)) {
+    return false;
+  }
+
+  // We cannot decide whether OCSP stapling will occur yet because the correct
+  // SSL_CTX might not have been selected.
+  hs->ocsp_stapling_requested = status_type == TLSEXT_STATUSTYPE_ocsp;
+
+  return true;
+}
+
+static bool ext_ocsp_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+      !hs->ocsp_stapling_requested || hs->config->cert->ocsp_response == NULL ||
+      ssl->s3->session_reused ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    return true;
+  }
+
+  hs->certificate_status_expected = true;
+
+  return CBB_add_u16(out, TLSEXT_TYPE_status_request) &&
+         CBB_add_u16(out, 0 /* length */);
+}
+
+
+// Next protocol negotiation.
+//
+// https://htmlpreview.github.io/?https://github.com/agl/technotes/blob/master/nextprotoneg.html
+
+static bool ext_npn_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->initial_handshake_complete ||
+      ssl->ctx->next_proto_select_cb == NULL ||
+      SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_next_proto_neg) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_npn_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // If any of these are false then we should never have sent the NPN
+  // extension in the ClientHello and thus this function should never have been
+  // called.
+  assert(!ssl->s3->initial_handshake_complete);
+  assert(!SSL_is_dtls(ssl));
+  assert(ssl->ctx->next_proto_select_cb != NULL);
+
+  if (!ssl->s3->alpn_selected.empty()) {
+    // NPN and ALPN may not be negotiated in the same connection.
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN);
+    return false;
+  }
+
+  const uint8_t *const orig_contents = CBS_data(contents);
+  const size_t orig_len = CBS_len(contents);
+
+  while (CBS_len(contents) != 0) {
+    CBS proto;
+    if (!CBS_get_u8_length_prefixed(contents, &proto) ||
+        CBS_len(&proto) == 0) {
+      return false;
+    }
+  }
+
+  uint8_t *selected;
+  uint8_t selected_len;
+  if (ssl->ctx->next_proto_select_cb(
+          ssl, &selected, &selected_len, orig_contents, orig_len,
+          ssl->ctx->next_proto_select_cb_arg) != SSL_TLSEXT_ERR_OK ||
+      !ssl->s3->next_proto_negotiated.CopyFrom(
+          MakeConstSpan(selected, selected_len))) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  hs->next_proto_neg_seen = true;
+  return true;
+}
+
+static bool ext_npn_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents != NULL && CBS_len(contents) != 0) {
+    return false;
+  }
+
+  if (contents == NULL ||
+      ssl->s3->initial_handshake_complete ||
+      ssl->ctx->next_protos_advertised_cb == NULL ||
+      SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  hs->next_proto_neg_seen = true;
+  return true;
+}
+
+static bool ext_npn_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // |next_proto_neg_seen| might have been cleared when an ALPN extension was
+  // parsed.
+  if (!hs->next_proto_neg_seen) {
+    return true;
+  }
+
+  const uint8_t *npa;
+  unsigned npa_len;
+
+  if (ssl->ctx->next_protos_advertised_cb(
+          ssl, &npa, &npa_len, ssl->ctx->next_protos_advertised_cb_arg) !=
+      SSL_TLSEXT_ERR_OK) {
+    hs->next_proto_neg_seen = false;
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_next_proto_neg) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, npa, npa_len) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Signed certificate timestamps.
+//
+// https://tools.ietf.org/html/rfc6962#section-3.3.1
+
+static bool ext_sct_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->config->signed_cert_timestamps_enabled) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_certificate_timestamp) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sct_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // TLS 1.3 SCTs are included in the Certificate extensions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // If this is false then we should never have sent the SCT extension in the
+  // ClientHello and thus this function should never have been called.
+  assert(hs->config->signed_cert_timestamps_enabled);
+
+  if (!ssl_is_sct_list_valid(contents)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // Session resumption uses the original session information. The extension
+  // should not be sent on resumption, but RFC 6962 did not make it a
+  // requirement, so tolerate this.
+  //
+  // TODO(davidben): Enforce this anyway.
+  if (!ssl->s3->session_reused) {
+    hs->new_session->signed_cert_timestamp_list.reset(
+        CRYPTO_BUFFER_new_from_CBS(contents, ssl->ctx->pool));
+    if (hs->new_session->signed_cert_timestamp_list == nullptr) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool ext_sct_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->scts_requested = true;
+  return true;
+}
+
+static bool ext_sct_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // The extension shouldn't be sent when resuming sessions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION || ssl->s3->session_reused ||
+      hs->config->cert->signed_cert_timestamp_list == NULL) {
+    return true;
+  }
+
+  CBB contents;
+  return CBB_add_u16(out, TLSEXT_TYPE_certificate_timestamp) &&
+         CBB_add_u16_length_prefixed(out, &contents) &&
+         CBB_add_bytes(
+             &contents,
+             CRYPTO_BUFFER_data(
+                 hs->config->cert->signed_cert_timestamp_list.get()),
+             CRYPTO_BUFFER_len(
+                 hs->config->cert->signed_cert_timestamp_list.get())) &&
+         CBB_flush(out);
+}
+
+
+// Application-level Protocol Negotiation.
+//
+// https://tools.ietf.org/html/rfc7301
+
+static bool ext_alpn_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->alpn_client_proto_list.empty() ||
+      ssl->s3->initial_handshake_complete) {
+    return true;
+  }
+
+  CBB contents, proto_list;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_application_layer_protocol_negotiation) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &proto_list) ||
+      !CBB_add_bytes(&proto_list, hs->config->alpn_client_proto_list.data(),
+                     hs->config->alpn_client_proto_list.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_alpn_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  assert(!ssl->s3->initial_handshake_complete);
+  assert(!hs->config->alpn_client_proto_list.empty());
+
+  if (hs->next_proto_neg_seen) {
+    // NPN and ALPN may not be negotiated in the same connection.
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN);
+    return false;
+  }
+
+  // The extension data consists of a ProtocolNameList which must have
+  // exactly one ProtocolName. Each of these is length-prefixed.
+  CBS protocol_name_list, protocol_name;
+  if (!CBS_get_u16_length_prefixed(contents, &protocol_name_list) ||
+      CBS_len(contents) != 0 ||
+      !CBS_get_u8_length_prefixed(&protocol_name_list, &protocol_name) ||
+      // Empty protocol names are forbidden.
+      CBS_len(&protocol_name) == 0 ||
+      CBS_len(&protocol_name_list) != 0) {
+    return false;
+  }
+
+  if (!ssl_is_alpn_protocol_allowed(hs, protocol_name)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_ALPN_PROTOCOL);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  if (!ssl->s3->alpn_selected.CopyFrom(protocol_name)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_is_alpn_protocol_allowed(const SSL_HANDSHAKE *hs,
+                                  Span<const uint8_t> protocol) {
+  if (hs->config->alpn_client_proto_list.empty()) {
+    return false;
+  }
+
+  if (hs->ssl->ctx->allow_unknown_alpn_protos) {
+    return true;
+  }
+
+  // Check that the protocol name is one of the ones we advertised.
+  CBS client_protocol_name_list =
+          MakeConstSpan(hs->config->alpn_client_proto_list),
+      client_protocol_name;
+  while (CBS_len(&client_protocol_name_list) > 0) {
+    if (!CBS_get_u8_length_prefixed(&client_protocol_name_list,
+                                    &client_protocol_name)) {
+      return false;
+    }
+
+    if (client_protocol_name == protocol) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool ssl_negotiate_alpn(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  CBS contents;
+  if (ssl->ctx->alpn_select_cb == NULL ||
+      !ssl_client_hello_get_extension(
+          client_hello, &contents,
+          TLSEXT_TYPE_application_layer_protocol_negotiation)) {
+    // Ignore ALPN if not configured or no extension was supplied.
+    return true;
+  }
+
+  // ALPN takes precedence over NPN.
+  hs->next_proto_neg_seen = false;
+
+  CBS protocol_name_list;
+  if (!CBS_get_u16_length_prefixed(&contents, &protocol_name_list) ||
+      CBS_len(&contents) != 0 ||
+      CBS_len(&protocol_name_list) < 2) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // Validate the protocol list.
+  CBS protocol_name_list_copy = protocol_name_list;
+  while (CBS_len(&protocol_name_list_copy) > 0) {
+    CBS protocol_name;
+
+    if (!CBS_get_u8_length_prefixed(&protocol_name_list_copy, &protocol_name) ||
+        // Empty protocol names are forbidden.
+        CBS_len(&protocol_name) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+  }
+
+  const uint8_t *selected;
+  uint8_t selected_len;
+  if (ssl->ctx->alpn_select_cb(
+          ssl, &selected, &selected_len, CBS_data(&protocol_name_list),
+          CBS_len(&protocol_name_list),
+          ssl->ctx->alpn_select_cb_arg) == SSL_TLSEXT_ERR_OK) {
+    if (selected_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_ALPN_PROTOCOL);
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+    if (!ssl->s3->alpn_selected.CopyFrom(
+            MakeConstSpan(selected, selected_len))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool ext_alpn_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->alpn_selected.empty()) {
+    return true;
+  }
+
+  CBB contents, proto_list, proto;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_application_layer_protocol_negotiation) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &proto_list) ||
+      !CBB_add_u8_length_prefixed(&proto_list, &proto) ||
+      !CBB_add_bytes(&proto, ssl->s3->alpn_selected.data(),
+                     ssl->s3->alpn_selected.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Channel ID.
+//
+// https://tools.ietf.org/html/draft-balfanz-tls-channelid-01
+
+static void ext_channel_id_init(SSL_HANDSHAKE *hs) {
+  hs->ssl->s3->channel_id_valid = false;
+}
+
+static bool ext_channel_id_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (!hs->config->channel_id_enabled || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_channel_id_parse_serverhello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  assert(!SSL_is_dtls(ssl));
+  assert(hs->config->channel_id_enabled);
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  ssl->s3->channel_id_valid = true;
+  return true;
+}
+
+static bool ext_channel_id_parse_clienthello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL || !hs->config->channel_id_enabled || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  ssl->s3->channel_id_valid = true;
+  return true;
+}
+
+static bool ext_channel_id_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl->s3->channel_id_valid) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Secure Real-time Transport Protocol (SRTP) extension.
+//
+// https://tools.ietf.org/html/rfc5764
+
+
+static void ext_srtp_init(SSL_HANDSHAKE *hs) {
+  hs->ssl->s3->srtp_profile = NULL;
+}
+
+static bool ext_srtp_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  STACK_OF(SRTP_PROTECTION_PROFILE) *profiles = SSL_get_srtp_profiles(ssl);
+  if (profiles == NULL ||
+      sk_SRTP_PROTECTION_PROFILE_num(profiles) == 0) {
+    return true;
+  }
+
+  CBB contents, profile_ids;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_srtp) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &profile_ids)) {
+    return false;
+  }
+
+  for (const SRTP_PROTECTION_PROFILE *profile : profiles) {
+    if (!CBB_add_u16(&profile_ids, profile->id)) {
+      return false;
+    }
+  }
+
+  if (!CBB_add_u8(&contents, 0 /* empty use_mki value */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_srtp_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // The extension consists of a u16-prefixed profile ID list containing a
+  // single uint16_t profile ID, then followed by a u8-prefixed srtp_mki field.
+  //
+  // See https://tools.ietf.org/html/rfc5764#section-4.1.1
+  CBS profile_ids, srtp_mki;
+  uint16_t profile_id;
+  if (!CBS_get_u16_length_prefixed(contents, &profile_ids) ||
+      !CBS_get_u16(&profile_ids, &profile_id) ||
+      CBS_len(&profile_ids) != 0 ||
+      !CBS_get_u8_length_prefixed(contents, &srtp_mki) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+    return false;
+  }
+
+  if (CBS_len(&srtp_mki) != 0) {
+    // Must be no MKI, since we never offer one.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_MKI_VALUE);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  STACK_OF(SRTP_PROTECTION_PROFILE) *profiles = SSL_get_srtp_profiles(ssl);
+
+  // Check to see if the server gave us something we support (and presumably
+  // offered).
+  for (const SRTP_PROTECTION_PROFILE *profile : profiles) {
+    if (profile->id == profile_id) {
+      ssl->s3->srtp_profile = profile;
+      return true;
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+static bool ext_srtp_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS profile_ids, srtp_mki;
+  if (!CBS_get_u16_length_prefixed(contents, &profile_ids) ||
+      CBS_len(&profile_ids) < 2 ||
+      !CBS_get_u8_length_prefixed(contents, &srtp_mki) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+    return false;
+  }
+  // Discard the MKI value for now.
+
+  const STACK_OF(SRTP_PROTECTION_PROFILE) *server_profiles =
+      SSL_get_srtp_profiles(ssl);
+
+  // Pick the server's most preferred profile.
+  for (const SRTP_PROTECTION_PROFILE *server_profile : server_profiles) {
+    CBS profile_ids_tmp;
+    CBS_init(&profile_ids_tmp, CBS_data(&profile_ids), CBS_len(&profile_ids));
+
+    while (CBS_len(&profile_ids_tmp) > 0) {
+      uint16_t profile_id;
+      if (!CBS_get_u16(&profile_ids_tmp, &profile_id)) {
+        return false;
+      }
+
+      if (server_profile->id == profile_id) {
+        ssl->s3->srtp_profile = server_profile;
+        return true;
+      }
+    }
+  }
+
+  return true;
+}
+
+static bool ext_srtp_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->srtp_profile == NULL) {
+    return true;
+  }
+
+  CBB contents, profile_ids;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_srtp) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &profile_ids) ||
+      !CBB_add_u16(&profile_ids, ssl->s3->srtp_profile->id) ||
+      !CBB_add_u8(&contents, 0 /* empty MKI */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// EC point formats.
+//
+// https://tools.ietf.org/html/rfc4492#section-5.1.2
+
+static bool ext_ec_point_add_extension(SSL_HANDSHAKE *hs, CBB *out) {
+  CBB contents, formats;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_ec_point_formats) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &formats) ||
+      !CBB_add_u8(&formats, TLSEXT_ECPOINTFORMAT_uncompressed) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ec_point_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  // The point format extension is unnecessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ext_ec_point_add_extension(hs, out);
+}
+
+static bool ext_ec_point_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                           CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  CBS ec_point_format_list;
+  if (!CBS_get_u8_length_prefixed(contents, &ec_point_format_list) ||
+      CBS_len(contents) != 0) {
+    return false;
+  }
+
+  // Per RFC 4492, section 5.1.2, implementations MUST support the uncompressed
+  // point format.
+  if (OPENSSL_memchr(CBS_data(&ec_point_format_list),
+                     TLSEXT_ECPOINTFORMAT_uncompressed,
+                     CBS_len(&ec_point_format_list)) == NULL) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ec_point_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                          CBS *contents) {
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ext_ec_point_parse_serverhello(hs, out_alert, contents);
+}
+
+static bool ext_ec_point_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  const uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  const uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  const bool using_ecc = (alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA);
+
+  if (!using_ecc) {
+    return true;
+  }
+
+  return ext_ec_point_add_extension(hs, out);
+}
+
+
+// Pre Shared Key
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.11
+
+static size_t ext_pre_shared_key_clienthello_length(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_3_VERSION || ssl->session == nullptr ||
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    return 0;
+  }
+
+  size_t binder_len = EVP_MD_size(ssl_session_get_digest(ssl->session.get()));
+  return 15 + ssl->session->ticket.size() + binder_len;
+}
+
+static bool ext_pre_shared_key_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  hs->needs_psk_binder = false;
+  if (hs->max_version < TLS1_3_VERSION || ssl->session == nullptr ||
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  // Per RFC 8446 section 4.1.4, skip offering the session if the selected
+  // cipher in HelloRetryRequest does not match. This avoids performing the
+  // transcript hash transformation for multiple hashes.
+  if (ssl->s3 && ssl->s3->used_hello_retry_request &&
+      ssl->session->cipher->algorithm_prf != hs->new_cipher->algorithm_prf) {
+    return true;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  uint32_t ticket_age = 1000 * (now.tv_sec - ssl->session->time);
+  uint32_t obfuscated_ticket_age = ticket_age + ssl->session->ticket_age_add;
+
+  // Fill in a placeholder zero binder of the appropriate length. It will be
+  // computed and filled in later after length prefixes are computed.
+  uint8_t zero_binder[EVP_MAX_MD_SIZE] = {0};
+  size_t binder_len = EVP_MD_size(ssl_session_get_digest(ssl->session.get()));
+
+  CBB contents, identity, ticket, binders, binder;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_pre_shared_key) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &identity) ||
+      !CBB_add_u16_length_prefixed(&identity, &ticket) ||
+      !CBB_add_bytes(&ticket, ssl->session->ticket.data(),
+                     ssl->session->ticket.size()) ||
+      !CBB_add_u32(&identity, obfuscated_ticket_age) ||
+      !CBB_add_u16_length_prefixed(&contents, &binders) ||
+      !CBB_add_u8_length_prefixed(&binders, &binder) ||
+      !CBB_add_bytes(&binder, zero_binder, binder_len)) {
+    return false;
+  }
+
+  hs->needs_psk_binder = true;
+  return CBB_flush(out);
+}
+
+bool ssl_ext_pre_shared_key_parse_serverhello(SSL_HANDSHAKE *hs,
+                                              uint8_t *out_alert,
+                                              CBS *contents) {
+  uint16_t psk_id;
+  if (!CBS_get_u16(contents, &psk_id) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // We only advertise one PSK identity, so the only legal index is zero.
+  if (psk_id != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+    *out_alert = SSL_AD_UNKNOWN_PSK_IDENTITY;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_ext_pre_shared_key_parse_clienthello(
+    SSL_HANDSHAKE *hs, CBS *out_ticket, CBS *out_binders,
+    uint32_t *out_obfuscated_ticket_age, uint8_t *out_alert,
+    const SSL_CLIENT_HELLO *client_hello, CBS *contents) {
+  // Verify that the pre_shared_key extension is the last extension in
+  // ClientHello.
+  if (CBS_data(contents) + CBS_len(contents) !=
+      client_hello->extensions + client_hello->extensions_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PRE_SHARED_KEY_MUST_BE_LAST);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // We only process the first PSK identity since we don't support pure PSK.
+  CBS identities, binders;
+  if (!CBS_get_u16_length_prefixed(contents, &identities) ||
+      !CBS_get_u16_length_prefixed(&identities, out_ticket) ||
+      !CBS_get_u32(&identities, out_obfuscated_ticket_age) ||
+      !CBS_get_u16_length_prefixed(contents, &binders) ||
+      CBS_len(&binders) == 0 ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  *out_binders = binders;
+
+  // Check the syntax of the remaining identities, but do not process them.
+  size_t num_identities = 1;
+  while (CBS_len(&identities) != 0) {
+    CBS unused_ticket;
+    uint32_t unused_obfuscated_ticket_age;
+    if (!CBS_get_u16_length_prefixed(&identities, &unused_ticket) ||
+        !CBS_get_u32(&identities, &unused_obfuscated_ticket_age)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    num_identities++;
+  }
+
+  // Check the syntax of the binders. The value will be checked later if
+  // resuming.
+  size_t num_binders = 0;
+  while (CBS_len(&binders) != 0) {
+    CBS binder;
+    if (!CBS_get_u8_length_prefixed(&binders, &binder)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    num_binders++;
+  }
+
+  if (num_identities != num_binders) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_ext_pre_shared_key_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ssl->s3->session_reused) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_pre_shared_key) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      // We only consider the first identity for resumption
+      !CBB_add_u16(&contents, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Pre-Shared Key Exchange Modes
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.9
+
+static bool ext_psk_key_exchange_modes_add_clienthello(SSL_HANDSHAKE *hs,
+                                                       CBB *out) {
+  if (hs->max_version < TLS1_3_VERSION) {
+    return true;
+  }
+
+  CBB contents, ke_modes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_psk_key_exchange_modes) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &ke_modes) ||
+      !CBB_add_u8(&ke_modes, SSL_PSK_DHE_KE)) {
+    return false;
+  }
+
+  return CBB_flush(out);
+}
+
+static bool ext_psk_key_exchange_modes_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                         uint8_t *out_alert,
+                                                         CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS ke_modes;
+  if (!CBS_get_u8_length_prefixed(contents, &ke_modes) ||
+      CBS_len(&ke_modes) == 0 ||
+      CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // We only support tickets with PSK_DHE_KE.
+  hs->accept_psk_mode = OPENSSL_memchr(CBS_data(&ke_modes), SSL_PSK_DHE_KE,
+                                       CBS_len(&ke_modes)) != NULL;
+
+  return true;
+}
+
+
+// Early Data Indication
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.10
+
+static bool ext_early_data_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // The second ClientHello never offers early data, and we must have already
+  // filled in |early_data_reason| by this point.
+  if (ssl->s3->used_hello_retry_request) {
+    assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+    return true;
+  }
+
+  if (!ssl->enable_early_data) {
+    ssl->s3->early_data_reason = ssl_early_data_disabled;
+    return true;
+  }
+
+  if (hs->max_version < TLS1_3_VERSION) {
+    // We discard inapplicable sessions, so this is redundant with the session
+    // checks below, but we check give a more useful reason.
+    ssl->s3->early_data_reason = ssl_early_data_protocol_version;
+    return true;
+  }
+
+  if (ssl->session == nullptr) {
+    ssl->s3->early_data_reason = ssl_early_data_no_session_offered;
+    return true;
+  }
+
+  if (ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION ||
+      ssl->session->ticket_max_early_data == 0) {
+    ssl->s3->early_data_reason = ssl_early_data_unsupported_for_session;
+    return true;
+  }
+
+  // In case ALPN preferences changed since this session was established, avoid
+  // reporting a confusing value in |SSL_get0_alpn_selected| and sending early
+  // data we know will be rejected.
+  if (!ssl->session->early_alpn.empty() &&
+      !ssl_is_alpn_protocol_allowed(hs, ssl->session->early_alpn)) {
+    ssl->s3->early_data_reason = ssl_early_data_alpn_mismatch;
+    return true;
+  }
+
+  // |early_data_reason| will be filled in later when the server responds.
+  hs->early_data_offered = true;
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_early_data) ||
+      !CBB_add_u16(out, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_early_data_parse_serverhello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    if (hs->early_data_offered && !ssl->s3->used_hello_retry_request) {
+      ssl->s3->early_data_reason = ssl->s3->session_reused
+                                       ? ssl_early_data_peer_declined
+                                       : ssl_early_data_session_not_resumed;
+    } else {
+      // We already filled in |early_data_reason| when declining to offer 0-RTT
+      // or handling the implicit HelloRetryRequest reject.
+      assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+    }
+    return true;
+  }
+
+  // If we received an HRR, the second ClientHello never offers early data, so
+  // the extensions logic will automatically reject early data extensions as
+  // unsolicited. This covered by the ServerAcceptsEarlyDataOnHRR test.
+  assert(!ssl->s3->used_hello_retry_request);
+
+  if (CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  if (!ssl->s3->session_reused) {
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+    return false;
+  }
+
+  ssl->s3->early_data_reason = ssl_early_data_accepted;
+  ssl->s3->early_data_accepted = true;
+  return true;
+}
+
+static bool ext_early_data_parse_clienthello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert, CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL ||
+      ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  hs->early_data_offered = true;
+  return true;
+}
+
+static bool ext_early_data_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ssl->s3->early_data_accepted) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_early_data) ||
+      !CBB_add_u16(out, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Key Share
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.8
+
+static bool ext_key_share_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_3_VERSION) {
+    return true;
+  }
+
+  CBB contents, kse_bytes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &kse_bytes)) {
+    return false;
+  }
+
+  uint16_t group_id = hs->retry_group;
+  uint16_t second_group_id = 0;
+  if (ssl->s3 && ssl->s3->used_hello_retry_request) {
+    // We received a HelloRetryRequest without a new curve, so there is no new
+    // share to append. Leave |hs->key_share| as-is.
+    if (group_id == 0 &&
+        !CBB_add_bytes(&kse_bytes, hs->key_share_bytes.data(),
+                       hs->key_share_bytes.size())) {
+      return false;
+    }
+    hs->key_share_bytes.Reset();
+    if (group_id == 0) {
+      return CBB_flush(out);
+    }
+  } else {
+    // Add a fake group. See draft-davidben-tls-grease-01.
+    if (ssl->ctx->grease_enabled &&
+        (!CBB_add_u16(&kse_bytes,
+                      ssl_get_grease_value(hs, ssl_grease_group)) ||
+         !CBB_add_u16(&kse_bytes, 1 /* length */) ||
+         !CBB_add_u8(&kse_bytes, 0 /* one byte key share */))) {
+      return false;
+    }
+
+    // Predict the most preferred group.
+    Span<const uint16_t> groups = tls1_get_grouplist(hs);
+    if (groups.empty()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_GROUPS_SPECIFIED);
+      return false;
+    }
+
+    group_id = groups[0];
+
+    if (is_post_quantum_group(group_id) && groups.size() >= 2) {
+      // CECPQ2(b) is not sent as the only initial key share. We'll include the
+      // 2nd preference group too to avoid round-trips.
+      second_group_id = groups[1];
+      assert(second_group_id != group_id);
+    }
+  }
+
+  CBB key_exchange;
+  hs->key_shares[0] = SSLKeyShare::Create(group_id);
+  if (!hs->key_shares[0] ||
+      !CBB_add_u16(&kse_bytes, group_id) ||
+      !CBB_add_u16_length_prefixed(&kse_bytes, &key_exchange) ||
+      !hs->key_shares[0]->Offer(&key_exchange) ||
+      !CBB_flush(&kse_bytes)) {
+    return false;
+  }
+
+  if (second_group_id != 0) {
+    hs->key_shares[1] = SSLKeyShare::Create(second_group_id);
+    if (!hs->key_shares[1] ||
+        !CBB_add_u16(&kse_bytes, second_group_id) ||
+        !CBB_add_u16_length_prefixed(&kse_bytes, &key_exchange) ||
+        !hs->key_shares[1]->Offer(&key_exchange) ||
+        !CBB_flush(&kse_bytes)) {
+      return false;
+    }
+  }
+
+  // Save the contents of the extension to repeat it in the second
+  // ClientHello.
+  if (ssl->s3 && !ssl->s3->used_hello_retry_request &&
+      !hs->key_share_bytes.CopyFrom(
+          MakeConstSpan(CBB_data(&kse_bytes), CBB_len(&kse_bytes)))) {
+    return false;
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_ext_key_share_parse_serverhello(SSL_HANDSHAKE *hs,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents) {
+  CBS peer_key;
+  uint16_t group_id;
+  if (!CBS_get_u16(contents, &group_id) ||
+      !CBS_get_u16_length_prefixed(contents, &peer_key) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  SSLKeyShare *key_share = hs->key_shares[0].get();
+  if (key_share->GroupID() != group_id) {
+    if (!hs->key_shares[1] || hs->key_shares[1]->GroupID() != group_id) {
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return false;
+    }
+    key_share = hs->key_shares[1].get();
+  }
+
+  if (!key_share->Finish(out_secret, out_alert, peer_key)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  hs->new_session->group_id = group_id;
+  hs->key_shares[0].reset();
+  hs->key_shares[1].reset();
+  return true;
+}
+
+bool ssl_ext_key_share_parse_clienthello(SSL_HANDSHAKE *hs, bool *out_found,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents) {
+  uint16_t group_id;
+  CBS key_shares;
+  if (!tls1_get_shared_group(hs, &group_id)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_GROUP);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  if (!CBS_get_u16_length_prefixed(contents, &key_shares) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  // Find the corresponding key share.
+  CBS peer_key;
+  CBS_init(&peer_key, NULL, 0);
+  while (CBS_len(&key_shares) > 0) {
+    uint16_t id;
+    CBS peer_key_tmp;
+    if (!CBS_get_u16(&key_shares, &id) ||
+        !CBS_get_u16_length_prefixed(&key_shares, &peer_key_tmp) ||
+        CBS_len(&peer_key_tmp) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    if (id == group_id) {
+      if (CBS_len(&peer_key) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_KEY_SHARE);
+        *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+        return false;
+      }
+
+      peer_key = peer_key_tmp;
+      // Continue parsing the structure to keep peers honest.
+    }
+  }
+
+  if (CBS_len(&peer_key) == 0) {
+    *out_found = false;
+    out_secret->Reset();
+    return true;
+  }
+
+  // Compute the DH secret.
+  Array<uint8_t> secret;
+  ScopedCBB public_key;
+  UniquePtr<SSLKeyShare> key_share = SSLKeyShare::Create(group_id);
+  if (!key_share ||
+      !CBB_init(public_key.get(), 32) ||
+      !key_share->Accept(public_key.get(), &secret, out_alert, peer_key) ||
+      !CBBFinishArray(public_key.get(), &hs->ecdh_public_key)) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  *out_secret = std::move(secret);
+  *out_found = true;
+  return true;
+}
+
+bool ssl_ext_key_share_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  uint16_t group_id;
+  CBB kse_bytes, public_key;
+  if (!tls1_get_shared_group(hs, &group_id) ||
+      !CBB_add_u16(out, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16_length_prefixed(out, &kse_bytes) ||
+      !CBB_add_u16(&kse_bytes, group_id) ||
+      !CBB_add_u16_length_prefixed(&kse_bytes, &public_key) ||
+      !CBB_add_bytes(&public_key, hs->ecdh_public_key.data(),
+                     hs->ecdh_public_key.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  hs->ecdh_public_key.Reset();
+
+  hs->new_session->group_id = group_id;
+  return true;
+}
+
+
+// Supported Versions
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.1
+
+static bool ext_supported_versions_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version <= TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents, versions;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &versions)) {
+    return false;
+  }
+
+  // Add a fake version. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&versions, ssl_get_grease_value(hs, ssl_grease_version))) {
+    return false;
+  }
+
+  if (!ssl_add_supported_versions(hs, &versions) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Cookie
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.2
+
+static bool ext_cookie_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (hs->cookie.empty()) {
+    return true;
+  }
+
+  CBB contents, cookie;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_cookie) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &cookie) ||
+      !CBB_add_bytes(&cookie, hs->cookie.data(), hs->cookie.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  // The cookie is no longer needed in memory.
+  hs->cookie.Reset();
+  return true;
+}
+
+
+// Supported Groups
+//
+// https://tools.ietf.org/html/rfc4492#section-5.1.1
+// https://tools.ietf.org/html/rfc8446#section-4.2.7
+
+static bool ext_supported_groups_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  CBB contents, groups_bytes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_groups) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &groups_bytes)) {
+    return false;
+  }
+
+  // Add a fake group. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&groups_bytes,
+                   ssl_get_grease_value(hs, ssl_grease_group))) {
+    return false;
+  }
+
+  for (uint16_t group : tls1_get_grouplist(hs)) {
+    if (is_post_quantum_group(group) &&
+        hs->max_version < TLS1_3_VERSION) {
+      continue;
+    }
+    if (!CBB_add_u16(&groups_bytes, group)) {
+      return false;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+static bool ext_supported_groups_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                   uint8_t *out_alert,
+                                                   CBS *contents) {
+  // This extension is not expected to be echoed by servers in TLS 1.2, but some
+  // BigIP servers send it nonetheless, so do not enforce this.
+  return true;
+}
+
+static bool parse_u16_array(const CBS *cbs, Array<uint16_t> *out) {
+  CBS copy = *cbs;
+  if ((CBS_len(&copy) & 1) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  Array<uint16_t> ret;
+  if (!ret.Init(CBS_len(&copy) / 2)) {
+    return false;
+  }
+  for (size_t i = 0; i < ret.size(); i++) {
+    if (!CBS_get_u16(&copy, &ret[i])) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  assert(CBS_len(&copy) == 0);
+  *out = std::move(ret);
+  return 1;
+}
+
+static bool ext_supported_groups_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                  uint8_t *out_alert,
+                                                   CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS supported_group_list;
+  if (!CBS_get_u16_length_prefixed(contents, &supported_group_list) ||
+      CBS_len(&supported_group_list) == 0 ||
+      CBS_len(contents) != 0 ||
+      !parse_u16_array(&supported_group_list, &hs->peer_supported_group_list)) {
+    return false;
+  }
+
+  return true;
+}
+
+// Token Binding
+//
+// https://tools.ietf.org/html/draft-ietf-tokbind-negotiation-10
+
+// The Token Binding version number currently matches the draft number of
+// draft-ietf-tokbind-protocol, and when published as an RFC it will be 0x0100.
+// Since there are no wire changes to the protocol from draft 13 through the
+// current draft (16), this implementation supports all versions in that range.
+static uint16_t kTokenBindingMaxVersion = 16;
+static uint16_t kTokenBindingMinVersion = 13;
+
+static bool ext_token_binding_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->token_binding_params.empty() || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  CBB contents, params;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_token_binding) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, kTokenBindingMaxVersion) ||
+      !CBB_add_u8_length_prefixed(&contents, &params) ||
+      !CBB_add_bytes(&params, hs->config->token_binding_params.data(),
+                     hs->config->token_binding_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_token_binding_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                uint8_t *out_alert,
+                                                CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr) {
+    return true;
+  }
+
+  CBS params_list;
+  uint16_t version;
+  uint8_t param;
+  if (!CBS_get_u16(contents, &version) ||
+      !CBS_get_u8_length_prefixed(contents, &params_list) ||
+      !CBS_get_u8(&params_list, &param) ||
+      CBS_len(&params_list) > 0 ||
+      CBS_len(contents) > 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // The server-negotiated version must be less than or equal to our version.
+  if (version > kTokenBindingMaxVersion) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // If the server-selected version is less than what we support, then Token
+  // Binding wasn't negotiated (but the extension was parsed successfully).
+  if (version < kTokenBindingMinVersion) {
+    return true;
+  }
+
+  for (uint8_t config_param : hs->config->token_binding_params) {
+    if (param == config_param) {
+      ssl->s3->negotiated_token_binding_param = param;
+      ssl->s3->token_binding_negotiated = true;
+      return true;
+    }
+  }
+
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+// select_tb_param looks for the first token binding param in
+// |hs->ssl->token_binding_params| that is also in |params| and puts it in
+// |hs->ssl->negotiated_token_binding_param|. It returns true if a token binding
+// param is found, and false otherwise.
+static bool select_tb_param(SSL_HANDSHAKE *hs,
+                            Span<const uint8_t> peer_params) {
+  for (uint8_t tb_param : hs->config->token_binding_params) {
+    for (uint8_t peer_param : peer_params) {
+      if (tb_param == peer_param) {
+        hs->ssl->s3->negotiated_token_binding_param = tb_param;
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+static bool ext_token_binding_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                uint8_t *out_alert,
+                                                CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr || hs->config->token_binding_params.empty()) {
+    return true;
+  }
+
+  CBS params;
+  uint16_t version;
+  if (!CBS_get_u16(contents, &version) ||
+      !CBS_get_u8_length_prefixed(contents, &params) ||
+      CBS_len(&params) == 0 ||
+      CBS_len(contents) > 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // If the client-selected version is less than what we support, then Token
+  // Binding wasn't negotiated (but the extension was parsed successfully).
+  if (version < kTokenBindingMinVersion) {
+    return true;
+  }
+
+  // If the client-selected version is higher than we support, use our max
+  // version. Otherwise, use the client's version.
+  hs->negotiated_token_binding_version =
+      std::min(version, kTokenBindingMaxVersion);
+  if (!select_tb_param(hs, params)) {
+    return true;
+  }
+
+  ssl->s3->token_binding_negotiated = true;
+  return true;
+}
+
+static bool ext_token_binding_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl->s3->token_binding_negotiated) {
+    return true;
+  }
+
+  CBB contents, params;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_token_binding) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, hs->negotiated_token_binding_version) ||
+      !CBB_add_u8_length_prefixed(&contents, &params) ||
+      !CBB_add_u8(&params, ssl->s3->negotiated_token_binding_param) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+// QUIC Transport Parameters
+
+static bool ext_quic_transport_params_add_clienthello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  if (hs->config->quic_transport_params.empty() ||
+      hs->max_version <= TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_quic_transport_parameters) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, hs->config->quic_transport_params.data(),
+                     hs->config->quic_transport_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+  return true;
+}
+
+static bool ext_quic_transport_params_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                        uint8_t *out_alert,
+                                                        CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr) {
+    return true;
+  }
+  // QUIC requires TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    return false;
+  }
+
+  return ssl->s3->peer_quic_transport_params.CopyFrom(*contents);
+}
+
+static bool ext_quic_transport_params_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                        uint8_t *out_alert,
+                                                        CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (!contents || hs->config->quic_transport_params.empty()) {
+    return true;
+  }
+  // Ignore the extension before TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ssl->s3->peer_quic_transport_params.CopyFrom(*contents);
+}
+
+static bool ext_quic_transport_params_add_serverhello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  if (hs->config->quic_transport_params.empty()) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_quic_transport_parameters) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, hs->config->quic_transport_params.data(),
+                     hs->config->quic_transport_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+// Delegated credentials.
+//
+// https://tools.ietf.org/html/draft-ietf-tls-subcerts
+
+static bool ext_delegated_credential_add_clienthello(SSL_HANDSHAKE *hs,
+                                                     CBB *out) {
+  return true;
+}
+
+static bool ext_delegated_credential_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                       uint8_t *out_alert,
+                                                       CBS *contents) {
+  assert(TLSEXT_TYPE_delegated_credential == 0xff02);
+  // TODO: Check that the extension is empty.
+  //
+  // As of draft-03, the client sends an empty extension in order indicate
+  // support for delegated credentials. This could change, however, since the
+  // spec is not yet finalized. This assertion is here to remind us to enforce
+  // this check once the extension ID is assigned.
+
+  if (contents == nullptr || ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // Don't use delegated credentials unless we're negotiating TLS 1.3 or
+    // higher.
+    return true;
+  }
+
+  hs->delegated_credential_requested = true;
+  return true;
+}
+
+// Certificate compression
+
+static bool cert_compression_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  bool first = true;
+  CBB contents, algs;
+
+  for (const auto &alg : hs->ssl->ctx->cert_compression_algs) {
+    if (alg.decompress == nullptr) {
+      continue;
+    }
+
+    if (first && (!CBB_add_u16(out, TLSEXT_TYPE_cert_compression) ||
+                  !CBB_add_u16_length_prefixed(out, &contents) ||
+                  !CBB_add_u8_length_prefixed(&contents, &algs))) {
+      return false;
+    }
+    first = false;
+    if (!CBB_add_u16(&algs, alg.alg_id)) {
+      return false;
+    }
+  }
+
+  return first || CBB_flush(out);
+}
+
+static bool cert_compression_parse_serverhello(SSL_HANDSHAKE *hs,
+                                               uint8_t *out_alert,
+                                               CBS *contents) {
+  if (contents == nullptr) {
+    return true;
+  }
+
+  // The server may not echo this extension. Any server to client negotiation is
+  // advertised in the CertificateRequest message.
+  return false;
+}
+
+static bool cert_compression_parse_clienthello(SSL_HANDSHAKE *hs,
+                                               uint8_t *out_alert,
+                                               CBS *contents) {
+  if (contents == nullptr) {
+    return true;
+  }
+
+  const SSL_CTX *ctx = hs->ssl->ctx.get();
+  const size_t num_algs = ctx->cert_compression_algs.size();
+
+  CBS alg_ids;
+  if (!CBS_get_u8_length_prefixed(contents, &alg_ids) ||
+      CBS_len(contents) != 0 ||
+      CBS_len(&alg_ids) == 0 ||
+      CBS_len(&alg_ids) % 2 == 1) {
+    return false;
+  }
+
+  const size_t num_given_alg_ids = CBS_len(&alg_ids) / 2;
+  Array<uint16_t> given_alg_ids;
+  if (!given_alg_ids.Init(num_given_alg_ids)) {
+    return false;
+  }
+
+  size_t best_index = num_algs;
+  size_t given_alg_idx = 0;
+
+  while (CBS_len(&alg_ids) > 0) {
+    uint16_t alg_id;
+    if (!CBS_get_u16(&alg_ids, &alg_id)) {
+      return false;
+    }
+
+    given_alg_ids[given_alg_idx++] = alg_id;
+
+    for (size_t i = 0; i < num_algs; i++) {
+      const auto &alg = ctx->cert_compression_algs[i];
+      if (alg.alg_id == alg_id && alg.compress != nullptr) {
+        if (i < best_index) {
+          best_index = i;
+        }
+        break;
+      }
+    }
+  }
+
+  qsort(given_alg_ids.data(), given_alg_ids.size(), sizeof(uint16_t),
+        compare_uint16_t);
+  for (size_t i = 1; i < num_given_alg_ids; i++) {
+    if (given_alg_ids[i - 1] == given_alg_ids[i]) {
+      return false;
+    }
+  }
+
+  if (best_index < num_algs &&
+      ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    hs->cert_compression_negotiated = true;
+    hs->cert_compression_alg_id = ctx->cert_compression_algs[best_index].alg_id;
+  }
+
+  return true;
+}
+
+static bool cert_compression_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  return true;
+}
+
+
+// kExtensions contains all the supported extensions.
+static const struct tls_extension kExtensions[] = {
+  {
+    TLSEXT_TYPE_server_name,
+    NULL,
+    ext_sni_add_clienthello,
+    ext_sni_parse_serverhello,
+    ext_sni_parse_clienthello,
+    ext_sni_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_extended_master_secret,
+    NULL,
+    ext_ems_add_clienthello,
+    ext_ems_parse_serverhello,
+    ext_ems_parse_clienthello,
+    ext_ems_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_renegotiate,
+    NULL,
+    ext_ri_add_clienthello,
+    ext_ri_parse_serverhello,
+    ext_ri_parse_clienthello,
+    ext_ri_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_supported_groups,
+    NULL,
+    ext_supported_groups_add_clienthello,
+    ext_supported_groups_parse_serverhello,
+    ext_supported_groups_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_ec_point_formats,
+    NULL,
+    ext_ec_point_add_clienthello,
+    ext_ec_point_parse_serverhello,
+    ext_ec_point_parse_clienthello,
+    ext_ec_point_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_session_ticket,
+    NULL,
+    ext_ticket_add_clienthello,
+    ext_ticket_parse_serverhello,
+    // Ticket extension client parsing is handled in ssl_session.c
+    ignore_parse_clienthello,
+    ext_ticket_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_application_layer_protocol_negotiation,
+    NULL,
+    ext_alpn_add_clienthello,
+    ext_alpn_parse_serverhello,
+    // ALPN is negotiated late in |ssl_negotiate_alpn|.
+    ignore_parse_clienthello,
+    ext_alpn_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_status_request,
+    NULL,
+    ext_ocsp_add_clienthello,
+    ext_ocsp_parse_serverhello,
+    ext_ocsp_parse_clienthello,
+    ext_ocsp_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_signature_algorithms,
+    NULL,
+    ext_sigalgs_add_clienthello,
+    forbid_parse_serverhello,
+    ext_sigalgs_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_next_proto_neg,
+    NULL,
+    ext_npn_add_clienthello,
+    ext_npn_parse_serverhello,
+    ext_npn_parse_clienthello,
+    ext_npn_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_certificate_timestamp,
+    NULL,
+    ext_sct_add_clienthello,
+    ext_sct_parse_serverhello,
+    ext_sct_parse_clienthello,
+    ext_sct_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_channel_id,
+    ext_channel_id_init,
+    ext_channel_id_add_clienthello,
+    ext_channel_id_parse_serverhello,
+    ext_channel_id_parse_clienthello,
+    ext_channel_id_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_srtp,
+    ext_srtp_init,
+    ext_srtp_add_clienthello,
+    ext_srtp_parse_serverhello,
+    ext_srtp_parse_clienthello,
+    ext_srtp_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_key_share,
+    NULL,
+    ext_key_share_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_psk_key_exchange_modes,
+    NULL,
+    ext_psk_key_exchange_modes_add_clienthello,
+    forbid_parse_serverhello,
+    ext_psk_key_exchange_modes_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_early_data,
+    NULL,
+    ext_early_data_add_clienthello,
+    ext_early_data_parse_serverhello,
+    ext_early_data_parse_clienthello,
+    ext_early_data_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_supported_versions,
+    NULL,
+    ext_supported_versions_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_cookie,
+    NULL,
+    ext_cookie_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_quic_transport_parameters,
+    NULL,
+    ext_quic_transport_params_add_clienthello,
+    ext_quic_transport_params_parse_serverhello,
+    ext_quic_transport_params_parse_clienthello,
+    ext_quic_transport_params_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_token_binding,
+    NULL,
+    ext_token_binding_add_clienthello,
+    ext_token_binding_parse_serverhello,
+    ext_token_binding_parse_clienthello,
+    ext_token_binding_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_cert_compression,
+    NULL,
+    cert_compression_add_clienthello,
+    cert_compression_parse_serverhello,
+    cert_compression_parse_clienthello,
+    cert_compression_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_delegated_credential,
+    NULL,
+    ext_delegated_credential_add_clienthello,
+    forbid_parse_serverhello,
+    ext_delegated_credential_parse_clienthello,
+    dont_add_serverhello,
+  },
+};
+
+#define kNumExtensions (sizeof(kExtensions) / sizeof(struct tls_extension))
+
+static_assert(kNumExtensions <=
+                  sizeof(((SSL_HANDSHAKE *)NULL)->extensions.sent) * 8,
+              "too many extensions for sent bitset");
+static_assert(kNumExtensions <=
+                  sizeof(((SSL_HANDSHAKE *)NULL)->extensions.received) * 8,
+              "too many extensions for received bitset");
+
+static const struct tls_extension *tls_extension_find(uint32_t *out_index,
+                                                      uint16_t value) {
+  unsigned i;
+  for (i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].value == value) {
+      *out_index = i;
+      return &kExtensions[i];
+    }
+  }
+
+  return NULL;
+}
+
+bool ssl_add_clienthello_tlsext(SSL_HANDSHAKE *hs, CBB *out,
+                                size_t header_len) {
+  SSL *const ssl = hs->ssl;
+  CBB extensions;
+  if (!CBB_add_u16_length_prefixed(out, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Note we may send multiple ClientHellos for DTLS HelloVerifyRequest and TLS
+  // 1.3 HelloRetryRequest. For the latter, the extensions may change, so it is
+  // important to reset this value.
+  hs->extensions.sent = 0;
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].init != NULL) {
+      kExtensions[i].init(hs);
+    }
+  }
+
+  uint16_t grease_ext1 = 0;
+  if (ssl->ctx->grease_enabled) {
+    // Add a fake empty extension. See draft-davidben-tls-grease-01.
+    grease_ext1 = ssl_get_grease_value(hs, ssl_grease_extension1);
+    if (!CBB_add_u16(&extensions, grease_ext1) ||
+        !CBB_add_u16(&extensions, 0 /* zero length */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  bool last_was_empty = false;
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    const size_t len_before = CBB_len(&extensions);
+    if (!kExtensions[i].add_clienthello(hs, &extensions)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_ADDING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      return false;
+    }
+
+    const size_t bytes_written = CBB_len(&extensions) - len_before;
+    if (bytes_written != 0) {
+      hs->extensions.sent |= (1u << i);
+    }
+    // If the difference in lengths is only four bytes then the extension had
+    // an empty body.
+    last_was_empty = (bytes_written == 4);
+  }
+
+  if (ssl->ctx->grease_enabled) {
+    // Add a fake non-empty extension. See draft-davidben-tls-grease-01.
+    uint16_t grease_ext2 = ssl_get_grease_value(hs, ssl_grease_extension2);
+
+    // The two fake extensions must not have the same value. GREASE values are
+    // of the form 0x1a1a, 0x2a2a, 0x3a3a, etc., so XOR to generate a different
+    // one.
+    if (grease_ext1 == grease_ext2) {
+      grease_ext2 ^= 0x1010;
+    }
+
+    if (!CBB_add_u16(&extensions, grease_ext2) ||
+        !CBB_add_u16(&extensions, 1 /* one byte length */) ||
+        !CBB_add_u8(&extensions, 0 /* single zero byte as contents */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+
+    last_was_empty = false;
+  }
+
+  if (!SSL_is_dtls(ssl)) {
+    size_t psk_extension_len = ext_pre_shared_key_clienthello_length(hs);
+    header_len += 2 + CBB_len(&extensions) + psk_extension_len;
+    size_t padding_len = 0;
+
+    // The final extension must be non-empty. WebSphere Application
+    // Server 7.0 is intolerant to the last extension being zero-length. See
+    // https://crbug.com/363583.
+    if (last_was_empty && psk_extension_len == 0) {
+      padding_len = 1;
+      // The addition of the padding extension may push us into the F5 bug.
+      header_len += 4 + padding_len;
+    }
+
+    // Add padding to workaround bugs in F5 terminators. See RFC 7685.
+    //
+    // NB: because this code works out the length of all existing extensions
+    // it MUST always appear last (save for any PSK extension).
+    if (header_len > 0xff && header_len < 0x200) {
+      // If our calculations already included a padding extension, remove that
+      // factor because we're about to change its length.
+      if (padding_len != 0) {
+        header_len -= 4 + padding_len;
+      }
+      padding_len = 0x200 - header_len;
+      // Extensions take at least four bytes to encode. Always include at least
+      // one byte of data if including the extension. WebSphere Application
+      // Server 7.0 is intolerant to the last extension being zero-length. See
+      // https://crbug.com/363583.
+      if (padding_len >= 4 + 1) {
+        padding_len -= 4;
+      } else {
+        padding_len = 1;
+      }
+    }
+
+    if (padding_len != 0) {
+      uint8_t *padding_bytes;
+      if (!CBB_add_u16(&extensions, TLSEXT_TYPE_padding) ||
+          !CBB_add_u16(&extensions, padding_len) ||
+          !CBB_add_space(&extensions, &padding_bytes, padding_len)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        return false;
+      }
+
+      OPENSSL_memset(padding_bytes, 0, padding_len);
+    }
+  }
+
+  // The PSK extension must be last, including after the padding.
+  if (!ext_pre_shared_key_add_clienthello(hs, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Discard empty extensions blocks.
+  if (CBB_len(&extensions) == 0) {
+    CBB_discard_child(out);
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_add_serverhello_tlsext(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  CBB extensions;
+  if (!CBB_add_u16_length_prefixed(out, &extensions)) {
+    goto err;
+  }
+
+  for (unsigned i = 0; i < kNumExtensions; i++) {
+    if (!(hs->extensions.received & (1u << i))) {
+      // Don't send extensions that were not received.
+      continue;
+    }
+
+    if (!kExtensions[i].add_serverhello(hs, &extensions)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_ADDING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      goto err;
+    }
+  }
+
+  // Discard empty extensions blocks before TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION &&
+      CBB_len(&extensions) == 0) {
+    CBB_discard_child(out);
+  }
+
+  return CBB_flush(out);
+
+err:
+  OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+  return false;
+}
+
+static bool ssl_scan_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                        const SSL_CLIENT_HELLO *client_hello,
+                                        int *out_alert) {
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].init != NULL) {
+      kExtensions[i].init(hs);
+    }
+  }
+
+  hs->extensions.received = 0;
+  CBS extensions;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  while (CBS_len(&extensions) != 0) {
+    uint16_t type;
+    CBS extension;
+
+    // Decode the next extension.
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    unsigned ext_index;
+    const struct tls_extension *const ext =
+        tls_extension_find(&ext_index, type);
+    if (ext == NULL) {
+      continue;
+    }
+
+    hs->extensions.received |= (1u << ext_index);
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ext->parse_clienthello(hs, &alert, &extension)) {
+      *out_alert = alert;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      return false;
+    }
+  }
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (hs->extensions.received & (1u << i)) {
+      continue;
+    }
+
+    CBS *contents = NULL, fake_contents;
+    static const uint8_t kFakeRenegotiateExtension[] = {0};
+    if (kExtensions[i].value == TLSEXT_TYPE_renegotiate &&
+        ssl_client_cipher_list_contains_cipher(client_hello,
+                                               SSL3_CK_SCSV & 0xffff)) {
+      // The renegotiation SCSV was received so pretend that we received a
+      // renegotiation extension.
+      CBS_init(&fake_contents, kFakeRenegotiateExtension,
+               sizeof(kFakeRenegotiateExtension));
+      contents = &fake_contents;
+      hs->extensions.received |= (1u << i);
+    }
+
+    // Extension wasn't observed so call the callback with a NULL
+    // parameter.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!kExtensions[i].parse_clienthello(hs, &alert, contents)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      *out_alert = alert;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool ssl_parse_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                  const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  int alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_scan_clienthello_tlsext(hs, client_hello, &alert)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  if (!ssl_check_clienthello_tlsext(hs)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_TLSEXT);
+    return false;
+  }
+
+  return true;
+}
+
+static bool ssl_scan_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs,
+                                        int *out_alert) {
+  SSL *const ssl = hs->ssl;
+  // Before TLS 1.3, ServerHello extensions blocks may be omitted if empty.
+  if (CBS_len(cbs) == 0 && ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  // Decode the extensions block and check it is valid.
+  CBS extensions;
+  if (!CBS_get_u16_length_prefixed(cbs, &extensions) ||
+      !tls1_check_duplicate_extensions(&extensions)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  uint32_t received = 0;
+  while (CBS_len(&extensions) != 0) {
+    uint16_t type;
+    CBS extension;
+
+    // Decode the next extension.
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    unsigned ext_index;
+    const struct tls_extension *const ext =
+        tls_extension_find(&ext_index, type);
+
+    if (ext == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return false;
+    }
+
+    static_assert(kNumExtensions <= sizeof(hs->extensions.sent) * 8,
+                  "too many bits");
+
+    if (!(hs->extensions.sent & (1u << ext_index))) {
+      // If the extension was never sent then it is illegal.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ERR_add_error_dataf("extension :%u", (unsigned)type);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return false;
+    }
+
+    received |= (1u << ext_index);
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ext->parse_serverhello(hs, &alert, &extension)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      *out_alert = alert;
+      return false;
+    }
+  }
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (!(received & (1u << i))) {
+      // Extension wasn't observed so call the callback with a NULL
+      // parameter.
+      uint8_t alert = SSL_AD_DECODE_ERROR;
+      if (!kExtensions[i].parse_serverhello(hs, &alert, NULL)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_EXTENSION);
+        ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+        *out_alert = alert;
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+static bool ssl_check_clienthello_tlsext(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (ssl->s3->token_binding_negotiated &&
+      !(SSL_get_secure_renegotiation_support(ssl) &&
+        SSL_get_extms_support(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+    return false;
+  }
+
+  int ret = SSL_TLSEXT_ERR_NOACK;
+  int al = SSL_AD_UNRECOGNIZED_NAME;
+
+  if (ssl->ctx->servername_callback != 0) {
+    ret = ssl->ctx->servername_callback(ssl, &al, ssl->ctx->servername_arg);
+  } else if (ssl->session_ctx->servername_callback != 0) {
+    ret = ssl->session_ctx->servername_callback(
+        ssl, &al, ssl->session_ctx->servername_arg);
+  }
+
+  switch (ret) {
+    case SSL_TLSEXT_ERR_ALERT_FATAL:
+      ssl_send_alert(ssl, SSL3_AL_FATAL, al);
+      return false;
+
+    case SSL_TLSEXT_ERR_NOACK:
+      hs->should_ack_sni = false;
+      return true;
+
+    default:
+      return true;
+  }
+}
+
+bool ssl_parse_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs) {
+  SSL *const ssl = hs->ssl;
+  int alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_scan_serverhello_tlsext(hs, cbs, &alert)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_ticket_aead_result_t decrypt_ticket_with_cipher_ctx(
+    Array<uint8_t> *out, EVP_CIPHER_CTX *cipher_ctx, HMAC_CTX *hmac_ctx,
+    Span<const uint8_t> ticket) {
+  size_t iv_len = EVP_CIPHER_CTX_iv_length(cipher_ctx);
+
+  // Check the MAC at the end of the ticket.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  size_t mac_len = HMAC_size(hmac_ctx);
+  if (ticket.size() < SSL_TICKET_KEY_NAME_LEN + iv_len + 1 + mac_len) {
+    // The ticket must be large enough for key name, IV, data, and MAC.
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  // Split the ticket into the ticket and the MAC.
+  auto ticket_mac = ticket.subspan(ticket.size() - mac_len);
+  ticket = ticket.subspan(0, ticket.size() - mac_len);
+  HMAC_Update(hmac_ctx, ticket.data(), ticket.size());
+  HMAC_Final(hmac_ctx, mac, NULL);
+  assert(mac_len == ticket_mac.size());
+  bool mac_ok = CRYPTO_memcmp(mac, ticket_mac.data(), mac_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  mac_ok = true;
+#endif
+  if (!mac_ok) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Decrypt the session data.
+  auto ciphertext = ticket.subspan(SSL_TICKET_KEY_NAME_LEN + iv_len);
+  Array<uint8_t> plaintext;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  if (!plaintext.CopyFrom(ciphertext)) {
+    return ssl_ticket_aead_error;
+  }
+#else
+  if (ciphertext.size() >= INT_MAX) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  if (!plaintext.Init(ciphertext.size())) {
+    return ssl_ticket_aead_error;
+  }
+  int len1, len2;
+  if (!EVP_DecryptUpdate(cipher_ctx, plaintext.data(), &len1, ciphertext.data(),
+                         (int)ciphertext.size()) ||
+      !EVP_DecryptFinal_ex(cipher_ctx, plaintext.data() + len1, &len2)) {
+    ERR_clear_error();
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  plaintext.Shrink(static_cast<size_t>(len1) + len2);
+#endif
+
+  *out = std::move(plaintext);
+  return ssl_ticket_aead_success;
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_cb(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, bool *out_renew_ticket,
+    Span<const uint8_t> ticket) {
+  assert(ticket.size() >= SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH);
+  ScopedEVP_CIPHER_CTX cipher_ctx;
+  ScopedHMAC_CTX hmac_ctx;
+  auto name = ticket.subspan(0, SSL_TICKET_KEY_NAME_LEN);
+  // The actual IV is shorter, but the length is determined by the callback's
+  // chosen cipher. Instead we pass in |EVP_MAX_IV_LENGTH| worth of IV to ensure
+  // the callback has enough.
+  auto iv = ticket.subspan(SSL_TICKET_KEY_NAME_LEN, EVP_MAX_IV_LENGTH);
+  int cb_ret = hs->ssl->session_ctx->ticket_key_cb(
+      hs->ssl, const_cast<uint8_t *>(name.data()),
+      const_cast<uint8_t *>(iv.data()), cipher_ctx.get(), hmac_ctx.get(),
+      0 /* decrypt */);
+  if (cb_ret < 0) {
+    return ssl_ticket_aead_error;
+  } else if (cb_ret == 0) {
+    return ssl_ticket_aead_ignore_ticket;
+  } else if (cb_ret == 2) {
+    *out_renew_ticket = true;
+  } else {
+    assert(cb_ret == 1);
+  }
+  return decrypt_ticket_with_cipher_ctx(out, cipher_ctx.get(), hmac_ctx.get(),
+                                        ticket);
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_ticket_keys(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, Span<const uint8_t> ticket) {
+  assert(ticket.size() >= SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH);
+  SSL_CTX *ctx = hs->ssl->session_ctx.get();
+
+  // Rotate the ticket key if necessary.
+  if (!ssl_ctx_rotate_ticket_encryption_key(ctx)) {
+    return ssl_ticket_aead_error;
+  }
+
+  const EVP_CIPHER *cipher = EVP_aes_128_cbc();
+  auto name = ticket.subspan(0, SSL_TICKET_KEY_NAME_LEN);
+  auto iv =
+      ticket.subspan(SSL_TICKET_KEY_NAME_LEN, EVP_CIPHER_iv_length(cipher));
+
+  // Pick the matching ticket key and decrypt.
+  ScopedEVP_CIPHER_CTX cipher_ctx;
+  ScopedHMAC_CTX hmac_ctx;
+  {
+    MutexReadLock lock(&ctx->lock);
+    const TicketKey *key;
+    if (ctx->ticket_key_current && name == ctx->ticket_key_current->name) {
+      key = ctx->ticket_key_current.get();
+    } else if (ctx->ticket_key_prev && name == ctx->ticket_key_prev->name) {
+      key = ctx->ticket_key_prev.get();
+    } else {
+      return ssl_ticket_aead_ignore_ticket;
+    }
+    if (!HMAC_Init_ex(hmac_ctx.get(), key->hmac_key, sizeof(key->hmac_key),
+                      tlsext_tick_md(), NULL) ||
+        !EVP_DecryptInit_ex(cipher_ctx.get(), cipher, NULL,
+                            key->aes_key, iv.data())) {
+      return ssl_ticket_aead_error;
+    }
+  }
+  return decrypt_ticket_with_cipher_ctx(out, cipher_ctx.get(), hmac_ctx.get(),
+                                        ticket);
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_method(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, bool *out_renew_ticket,
+    Span<const uint8_t> ticket) {
+  Array<uint8_t> plaintext;
+  if (!plaintext.Init(ticket.size())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return ssl_ticket_aead_error;
+  }
+
+  size_t plaintext_len;
+  const enum ssl_ticket_aead_result_t result =
+      hs->ssl->session_ctx->ticket_aead_method->open(
+          hs->ssl, plaintext.data(), &plaintext_len, ticket.size(),
+          ticket.data(), ticket.size());
+  if (result != ssl_ticket_aead_success) {
+    return result;
+  }
+
+  plaintext.Shrink(plaintext_len);
+  *out = std::move(plaintext);
+  return ssl_ticket_aead_success;
+}
+
+enum ssl_ticket_aead_result_t ssl_process_ticket(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    bool *out_renew_ticket, Span<const uint8_t> ticket,
+    Span<const uint8_t> session_id) {
+  *out_renew_ticket = false;
+  out_session->reset();
+
+  if ((SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) ||
+      session_id.size() > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  Array<uint8_t> plaintext;
+  enum ssl_ticket_aead_result_t result;
+  if (hs->ssl->session_ctx->ticket_aead_method != NULL) {
+    result = ssl_decrypt_ticket_with_method(hs, &plaintext, out_renew_ticket,
+                                            ticket);
+  } else {
+    // Ensure there is room for the key name and the largest IV |ticket_key_cb|
+    // may try to consume. The real limit may be lower, but the maximum IV
+    // length should be well under the minimum size for the session material and
+    // HMAC.
+    if (ticket.size() < SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH) {
+      return ssl_ticket_aead_ignore_ticket;
+    }
+    if (hs->ssl->session_ctx->ticket_key_cb != NULL) {
+      result =
+          ssl_decrypt_ticket_with_cb(hs, &plaintext, out_renew_ticket, ticket);
+    } else {
+      result = ssl_decrypt_ticket_with_ticket_keys(hs, &plaintext, ticket);
+    }
+  }
+
+  if (result != ssl_ticket_aead_success) {
+    return result;
+  }
+
+  // Decode the session.
+  UniquePtr<SSL_SESSION> session(SSL_SESSION_from_bytes(
+      plaintext.data(), plaintext.size(), hs->ssl->ctx.get()));
+  if (!session) {
+    ERR_clear_error();  // Don't leave an error on the queue.
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Copy the client's session ID into the new session, to denote the ticket has
+  // been accepted.
+  OPENSSL_memcpy(session->session_id, session_id.data(), session_id.size());
+  session->session_id_length = session_id.size();
+
+  *out_session = std::move(session);
+  return ssl_ticket_aead_success;
+}
+
+bool tls1_parse_peer_sigalgs(SSL_HANDSHAKE *hs, const CBS *in_sigalgs) {
+  // Extension ignored for inappropriate versions
+  if (ssl_protocol_version(hs->ssl) < TLS1_2_VERSION) {
+    return true;
+  }
+
+  // In all contexts, the signature algorithms list may not be empty. (It may be
+  // omitted by clients in TLS 1.2, but then the entire extension is omitted.)
+  return CBS_len(in_sigalgs) != 0 &&
+         parse_u16_array(in_sigalgs, &hs->peer_sigalgs);
+}
+
+bool tls1_get_legacy_signature_algorithm(uint16_t *out, const EVP_PKEY *pkey) {
+  switch (EVP_PKEY_id(pkey)) {
+    case EVP_PKEY_RSA:
+      *out = SSL_SIGN_RSA_PKCS1_MD5_SHA1;
+      return true;
+    case EVP_PKEY_EC:
+      *out = SSL_SIGN_ECDSA_SHA1;
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool tls1_choose_signature_algorithm(SSL_HANDSHAKE *hs, uint16_t *out) {
+  SSL *const ssl = hs->ssl;
+  CERT *cert = hs->config->cert.get();
+  DC *dc = cert->dc.get();
+
+  // Before TLS 1.2, the signature algorithm isn't negotiated as part of the
+  // handshake.
+  if (ssl_protocol_version(ssl) < TLS1_2_VERSION) {
+    if (!tls1_get_legacy_signature_algorithm(out, hs->local_pubkey.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS);
+      return false;
+    }
+    return true;
+  }
+
+  Span<const uint16_t> sigalgs = kSignSignatureAlgorithms;
+  if (ssl_signing_with_dc(hs)) {
+    sigalgs = MakeConstSpan(&dc->expected_cert_verify_algorithm, 1);
+  } else if (!cert->sigalgs.empty()) {
+    sigalgs = cert->sigalgs;
+  }
+
+  Span<const uint16_t> peer_sigalgs = tls1_get_peer_verify_algorithms(hs);
+
+  for (uint16_t sigalg : sigalgs) {
+    // SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal value and should never be
+    // negotiated.
+    if (sigalg == SSL_SIGN_RSA_PKCS1_MD5_SHA1 ||
+        !ssl_private_key_supports_signature_algorithm(hs, sigalg)) {
+      continue;
+    }
+
+    for (uint16_t peer_sigalg : peer_sigalgs) {
+      if (sigalg == peer_sigalg) {
+        *out = sigalg;
+        return true;
+      }
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS);
+  return false;
+}
+
+Span<const uint16_t> tls1_get_peer_verify_algorithms(const SSL_HANDSHAKE *hs) {
+  Span<const uint16_t> peer_sigalgs = hs->peer_sigalgs;
+  if (peer_sigalgs.empty() && ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // If the client didn't specify any signature_algorithms extension then
+    // we can assume that it supports SHA1. See
+    // http://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+    static const uint16_t kDefaultPeerAlgorithms[] = {SSL_SIGN_RSA_PKCS1_SHA1,
+                                                      SSL_SIGN_ECDSA_SHA1};
+    peer_sigalgs = kDefaultPeerAlgorithms;
+  }
+  return peer_sigalgs;
+}
+
+bool tls1_verify_channel_id(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  SSL *const ssl = hs->ssl;
+  // A Channel ID handshake message is structured to contain multiple
+  // extensions, but the only one that can be present is Channel ID.
+  uint16_t extension_type;
+  CBS channel_id = msg.body, extension;
+  if (!CBS_get_u16(&channel_id, &extension_type) ||
+      !CBS_get_u16_length_prefixed(&channel_id, &extension) ||
+      CBS_len(&channel_id) != 0 ||
+      extension_type != TLSEXT_TYPE_channel_id ||
+      CBS_len(&extension) != TLSEXT_CHANNEL_ID_SIZE) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  UniquePtr<EC_GROUP> p256(EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1));
+  if (!p256) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_P256_SUPPORT);
+    return false;
+  }
+
+  UniquePtr<ECDSA_SIG> sig(ECDSA_SIG_new());
+  UniquePtr<BIGNUM> x(BN_new()), y(BN_new());
+  if (!sig || !x || !y) {
+    return false;
+  }
+
+  const uint8_t *p = CBS_data(&extension);
+  if (BN_bin2bn(p + 0, 32, x.get()) == NULL ||
+      BN_bin2bn(p + 32, 32, y.get()) == NULL ||
+      BN_bin2bn(p + 64, 32, sig->r) == NULL ||
+      BN_bin2bn(p + 96, 32, sig->s) == NULL) {
+    return false;
+  }
+
+  UniquePtr<EC_KEY> key(EC_KEY_new());
+  UniquePtr<EC_POINT> point(EC_POINT_new(p256.get()));
+  if (!key || !point ||
+      !EC_POINT_set_affine_coordinates_GFp(p256.get(), point.get(), x.get(),
+                                           y.get(), nullptr) ||
+      !EC_KEY_set_group(key.get(), p256.get()) ||
+      !EC_KEY_set_public_key(key.get(), point.get())) {
+    return false;
+  }
+
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!tls1_channel_id_hash(hs, digest, &digest_len)) {
+    return false;
+  }
+
+  bool sig_ok = ECDSA_do_verify(digest, digest_len, sig.get(), key.get());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  sig_ok = true;
+  ERR_clear_error();
+#endif
+  if (!sig_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_SIGNATURE_INVALID);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    ssl->s3->channel_id_valid = false;
+    return false;
+  }
+
+  OPENSSL_memcpy(ssl->s3->channel_id, p, 64);
+  return true;
+}
+
+bool tls1_write_channel_id(SSL_HANDSHAKE *hs, CBB *cbb) {
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!tls1_channel_id_hash(hs, digest, &digest_len)) {
+    return false;
+  }
+
+  EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(hs->config->channel_id_private.get());
+  if (ec_key == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  UniquePtr<BIGNUM> x(BN_new()), y(BN_new());
+  if (!x || !y ||
+      !EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec_key),
+                                           EC_KEY_get0_public_key(ec_key),
+                                           x.get(), y.get(), nullptr)) {
+    return false;
+  }
+
+  UniquePtr<ECDSA_SIG> sig(ECDSA_do_sign(digest, digest_len, ec_key));
+  if (!sig) {
+    return false;
+  }
+
+  CBB child;
+  if (!CBB_add_u16(cbb, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16_length_prefixed(cbb, &child) ||
+      !BN_bn2cbb_padded(&child, 32, x.get()) ||
+      !BN_bn2cbb_padded(&child, 32, y.get()) ||
+      !BN_bn2cbb_padded(&child, 32, sig->r) ||
+      !BN_bn2cbb_padded(&child, 32, sig->s) ||
+      !CBB_flush(cbb)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls1_channel_id_hash(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    Array<uint8_t> msg;
+    if (!tls13_get_cert_verify_signature_input(hs, &msg,
+                                               ssl_cert_verify_channel_id)) {
+      return false;
+    }
+    SHA256(msg.data(), msg.size(), out);
+    *out_len = SHA256_DIGEST_LENGTH;
+    return true;
+  }
+
+  SHA256_CTX ctx;
+
+  SHA256_Init(&ctx);
+  static const char kClientIDMagic[] = "TLS Channel ID signature";
+  SHA256_Update(&ctx, kClientIDMagic, sizeof(kClientIDMagic));
+
+  if (ssl->session != NULL) {
+    static const char kResumptionMagic[] = "Resumption";
+    SHA256_Update(&ctx, kResumptionMagic, sizeof(kResumptionMagic));
+    if (ssl->session->original_handshake_hash_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    SHA256_Update(&ctx, ssl->session->original_handshake_hash,
+                  ssl->session->original_handshake_hash_len);
+  }
+
+  uint8_t hs_hash[EVP_MAX_MD_SIZE];
+  size_t hs_hash_len;
+  if (!hs->transcript.GetHash(hs_hash, &hs_hash_len)) {
+    return false;
+  }
+  SHA256_Update(&ctx, hs_hash, (size_t)hs_hash_len);
+  SHA256_Final(out, &ctx);
+  *out_len = SHA256_DIGEST_LENGTH;
+  return true;
+}
+
+bool tls1_record_handshake_hashes_for_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // This function should never be called for a resumed session because the
+  // handshake hashes that we wish to record are for the original, full
+  // handshake.
+  if (ssl->session != NULL) {
+    return false;
+  }
+
+  static_assert(
+      sizeof(hs->new_session->original_handshake_hash) == EVP_MAX_MD_SIZE,
+      "original_handshake_hash is too small");
+
+  size_t digest_len;
+  if (!hs->transcript.GetHash(hs->new_session->original_handshake_hash,
+                              &digest_len)) {
+    return false;
+  }
+
+  static_assert(EVP_MAX_MD_SIZE <= 0xff,
+                "EVP_MAX_MD_SIZE does not fit in uint8_t");
+  hs->new_session->original_handshake_hash_len = (uint8_t)digest_len;
+
+  return true;
+}
+
+bool ssl_do_channel_id_callback(SSL_HANDSHAKE *hs) {
+  if (hs->config->channel_id_private != NULL ||
+      hs->ssl->ctx->channel_id_cb == NULL) {
+    return true;
+  }
+
+  EVP_PKEY *key = NULL;
+  hs->ssl->ctx->channel_id_cb(hs->ssl, &key);
+  if (key == NULL) {
+    // The caller should try again later.
+    return true;
+  }
+
+  UniquePtr<EVP_PKEY> free_key(key);
+  return SSL_set1_tls_channel_id(hs->ssl, key);
+}
+
+bool ssl_is_sct_list_valid(const CBS *contents) {
+  // Shallow parse the SCT list for sanity. By the RFC
+  // (https://tools.ietf.org/html/rfc6962#section-3.3) neither the list nor any
+  // of the SCTs may be empty.
+  CBS copy = *contents;
+  CBS sct_list;
+  if (!CBS_get_u16_length_prefixed(&copy, &sct_list) ||
+      CBS_len(&copy) != 0 ||
+      CBS_len(&sct_list) == 0) {
+    return false;
+  }
+
+  while (CBS_len(&sct_list) > 0) {
+    CBS sct;
+    if (!CBS_get_u16_length_prefixed(&sct_list, &sct) ||
+        CBS_len(&sct) == 0) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_early_callback_ctx_extension_get(const SSL_CLIENT_HELLO *client_hello,
+                                         uint16_t extension_type,
+                                         const uint8_t **out_data,
+                                         size_t *out_len) {
+  CBS cbs;
+  if (!ssl_client_hello_get_extension(client_hello, &cbs, extension_type)) {
+    return 0;
+  }
+
+  *out_data = CBS_data(&cbs);
+  *out_len = CBS_len(&cbs);
+  return 1;
+}
+
+void SSL_CTX_set_ed25519_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->ed25519_enabled = !!enabled;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc.grpc_back
new file mode 100644
index 0000000..7958b5c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/t1_lib.cc.grpc_back	
@@ -0,0 +1,3876 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bytestring.h>
+#include <openssl/chacha.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+#include <openssl/mem.h>
+#include <openssl/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool ssl_check_clienthello_tlsext(SSL_HANDSHAKE *hs);
+
+static int compare_uint16_t(const void *p1, const void *p2) {
+  uint16_t u1 = *((const uint16_t *)p1);
+  uint16_t u2 = *((const uint16_t *)p2);
+  if (u1 < u2) {
+    return -1;
+  } else if (u1 > u2) {
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+// Per http://tools.ietf.org/html/rfc5246#section-7.4.1.4, there may not be
+// more than one extension of the same type in a ClientHello or ServerHello.
+// This function does an initial scan over the extensions block to filter those
+// out.
+static bool tls1_check_duplicate_extensions(const CBS *cbs) {
+  // First pass: count the extensions.
+  size_t num_extensions = 0;
+  CBS extensions = *cbs;
+  while (CBS_len(&extensions) > 0) {
+    uint16_t type;
+    CBS extension;
+
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      return false;
+    }
+
+    num_extensions++;
+  }
+
+  if (num_extensions == 0) {
+    return true;
+  }
+
+  Array<uint16_t> extension_types;
+  if (!extension_types.Init(num_extensions)) {
+    return false;
+  }
+
+  // Second pass: gather the extension types.
+  extensions = *cbs;
+  for (size_t i = 0; i < extension_types.size(); i++) {
+    CBS extension;
+
+    if (!CBS_get_u16(&extensions, &extension_types[i]) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      // This should not happen.
+      return false;
+    }
+  }
+  assert(CBS_len(&extensions) == 0);
+
+  // Sort the extensions and make sure there are no duplicates.
+  qsort(extension_types.data(), extension_types.size(), sizeof(uint16_t),
+        compare_uint16_t);
+  for (size_t i = 1; i < num_extensions; i++) {
+    if (extension_types[i - 1] == extension_types[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool is_post_quantum_group(uint16_t id) {
+  return id == SSL_CURVE_CECPQ2;
+}
+
+bool ssl_client_hello_init(const SSL *ssl, SSL_CLIENT_HELLO *out,
+                           const SSLMessage &msg) {
+  OPENSSL_memset(out, 0, sizeof(*out));
+  out->ssl = const_cast<SSL *>(ssl);
+  out->client_hello = CBS_data(&msg.body);
+  out->client_hello_len = CBS_len(&msg.body);
+
+  CBS client_hello, random, session_id;
+  CBS_init(&client_hello, out->client_hello, out->client_hello_len);
+  if (!CBS_get_u16(&client_hello, &out->version) ||
+      !CBS_get_bytes(&client_hello, &random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&client_hello, &session_id) ||
+      CBS_len(&session_id) > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return false;
+  }
+
+  out->random = CBS_data(&random);
+  out->random_len = CBS_len(&random);
+  out->session_id = CBS_data(&session_id);
+  out->session_id_len = CBS_len(&session_id);
+
+  // Skip past DTLS cookie
+  if (SSL_is_dtls(out->ssl)) {
+    CBS cookie;
+    if (!CBS_get_u8_length_prefixed(&client_hello, &cookie) ||
+        CBS_len(&cookie) > DTLS1_COOKIE_LENGTH) {
+      return false;
+    }
+  }
+
+  CBS cipher_suites, compression_methods;
+  if (!CBS_get_u16_length_prefixed(&client_hello, &cipher_suites) ||
+      CBS_len(&cipher_suites) < 2 || (CBS_len(&cipher_suites) & 1) != 0 ||
+      !CBS_get_u8_length_prefixed(&client_hello, &compression_methods) ||
+      CBS_len(&compression_methods) < 1) {
+    return false;
+  }
+
+  out->cipher_suites = CBS_data(&cipher_suites);
+  out->cipher_suites_len = CBS_len(&cipher_suites);
+  out->compression_methods = CBS_data(&compression_methods);
+  out->compression_methods_len = CBS_len(&compression_methods);
+
+  // If the ClientHello ends here then it's valid, but doesn't have any
+  // extensions.
+  if (CBS_len(&client_hello) == 0) {
+    out->extensions = NULL;
+    out->extensions_len = 0;
+    return true;
+  }
+
+  // Extract extensions and check it is valid.
+  CBS extensions;
+  if (!CBS_get_u16_length_prefixed(&client_hello, &extensions) ||
+      !tls1_check_duplicate_extensions(&extensions) ||
+      CBS_len(&client_hello) != 0) {
+    return false;
+  }
+
+  out->extensions = CBS_data(&extensions);
+  out->extensions_len = CBS_len(&extensions);
+
+  return true;
+}
+
+bool ssl_client_hello_get_extension(const SSL_CLIENT_HELLO *client_hello,
+                                    CBS *out, uint16_t extension_type) {
+  CBS extensions;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  while (CBS_len(&extensions) != 0) {
+    // Decode the next extension.
+    uint16_t type;
+    CBS extension;
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      return false;
+    }
+
+    if (type == extension_type) {
+      *out = extension;
+      return true;
+    }
+  }
+
+  return false;
+}
+
+static const uint16_t kDefaultGroups[] = {
+    SSL_CURVE_X25519,
+    SSL_CURVE_SECP256R1,
+    SSL_CURVE_SECP384R1,
+};
+
+Span<const uint16_t> tls1_get_grouplist(const SSL_HANDSHAKE *hs) {
+  if (!hs->config->supported_group_list.empty()) {
+    return hs->config->supported_group_list;
+  }
+  return Span<const uint16_t>(kDefaultGroups);
+}
+
+bool tls1_get_shared_group(SSL_HANDSHAKE *hs, uint16_t *out_group_id) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->server);
+
+  // Clients are not required to send a supported_groups extension. In this
+  // case, the server is free to pick any group it likes. See RFC 4492,
+  // section 4, paragraph 3.
+  //
+  // However, in the interests of compatibility, we will skip ECDH if the
+  // client didn't send an extension because we can't be sure that they'll
+  // support our favoured group. Thus we do not special-case an emtpy
+  // |peer_supported_group_list|.
+
+  Span<const uint16_t> groups = tls1_get_grouplist(hs);
+  Span<const uint16_t> pref, supp;
+  if (ssl->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
+    pref = groups;
+    supp = hs->peer_supported_group_list;
+  } else {
+    pref = hs->peer_supported_group_list;
+    supp = groups;
+  }
+
+  for (uint16_t pref_group : pref) {
+    for (uint16_t supp_group : supp) {
+      if (pref_group == supp_group &&
+          // CECPQ2(b) doesn't fit in the u8-length-prefixed ECPoint field in
+          // TLS 1.2 and below.
+          (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+           !is_post_quantum_group(pref_group))) {
+        *out_group_id = pref_group;
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+bool tls1_set_curves(Array<uint16_t> *out_group_ids, Span<const int> curves) {
+  Array<uint16_t> group_ids;
+  if (!group_ids.Init(curves.size())) {
+    return false;
+  }
+
+  for (size_t i = 0; i < curves.size(); i++) {
+    if (!ssl_nid_to_group_id(&group_ids[i], curves[i])) {
+      return false;
+    }
+  }
+
+  *out_group_ids = std::move(group_ids);
+  return true;
+}
+
+bool tls1_set_curves_list(Array<uint16_t> *out_group_ids, const char *curves) {
+  // Count the number of curves in the list.
+  size_t count = 0;
+  const char *ptr = curves, *col;
+  do {
+    col = strchr(ptr, ':');
+    count++;
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  Array<uint16_t> group_ids;
+  if (!group_ids.Init(count)) {
+    return false;
+  }
+
+  size_t i = 0;
+  ptr = curves;
+  do {
+    col = strchr(ptr, ':');
+    if (!ssl_name_to_group_id(&group_ids[i++], ptr,
+                              col ? (size_t)(col - ptr) : strlen(ptr))) {
+      return false;
+    }
+    if (col) {
+      ptr = col + 1;
+    }
+  } while (col);
+
+  assert(i == count);
+  *out_group_ids = std::move(group_ids);
+  return true;
+}
+
+bool tls1_check_group_id(const SSL_HANDSHAKE *hs, uint16_t group_id) {
+  if (is_post_quantum_group(group_id) &&
+      ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // CECPQ2(b) requires TLS 1.3.
+    return false;
+  }
+
+  for (uint16_t supported : tls1_get_grouplist(hs)) {
+    if (supported == group_id) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// kVerifySignatureAlgorithms is the default list of accepted signature
+// algorithms for verifying.
+static const uint16_t kVerifySignatureAlgorithms[] = {
+    // List our preferred algorithms first.
+    SSL_SIGN_ED25519,
+    SSL_SIGN_ECDSA_SECP256R1_SHA256,
+    SSL_SIGN_RSA_PSS_RSAE_SHA256,
+    SSL_SIGN_RSA_PKCS1_SHA256,
+
+    // Larger hashes are acceptable.
+    SSL_SIGN_ECDSA_SECP384R1_SHA384,
+    SSL_SIGN_RSA_PSS_RSAE_SHA384,
+    SSL_SIGN_RSA_PKCS1_SHA384,
+
+    SSL_SIGN_RSA_PSS_RSAE_SHA512,
+    SSL_SIGN_RSA_PKCS1_SHA512,
+
+    // For now, SHA-1 is still accepted but least preferable.
+    SSL_SIGN_RSA_PKCS1_SHA1,
+};
+
+// kSignSignatureAlgorithms is the default list of supported signature
+// algorithms for signing.
+static const uint16_t kSignSignatureAlgorithms[] = {
+    // List our preferred algorithms first.
+    SSL_SIGN_ED25519,
+    SSL_SIGN_ECDSA_SECP256R1_SHA256,
+    SSL_SIGN_RSA_PSS_RSAE_SHA256,
+    SSL_SIGN_RSA_PKCS1_SHA256,
+
+    // If needed, sign larger hashes.
+    //
+    // TODO(davidben): Determine which of these may be pruned.
+    SSL_SIGN_ECDSA_SECP384R1_SHA384,
+    SSL_SIGN_RSA_PSS_RSAE_SHA384,
+    SSL_SIGN_RSA_PKCS1_SHA384,
+
+    SSL_SIGN_ECDSA_SECP521R1_SHA512,
+    SSL_SIGN_RSA_PSS_RSAE_SHA512,
+    SSL_SIGN_RSA_PKCS1_SHA512,
+
+    // If the peer supports nothing else, sign with SHA-1.
+    SSL_SIGN_ECDSA_SHA1,
+    SSL_SIGN_RSA_PKCS1_SHA1,
+};
+
+struct SSLSignatureAlgorithmList {
+  bool Next(uint16_t *out) {
+    while (!list.empty()) {
+      uint16_t sigalg = list[0];
+      list = list.subspan(1);
+      if (skip_ed25519 && sigalg == SSL_SIGN_ED25519) {
+        continue;
+      }
+      *out = sigalg;
+      return true;
+    }
+    return false;
+  }
+
+  Span<const uint16_t> list;
+  bool skip_ed25519 = false;
+};
+
+static SSLSignatureAlgorithmList tls12_get_verify_sigalgs(const SSL *ssl) {
+  SSLSignatureAlgorithmList ret;
+  if (!ssl->config->verify_sigalgs.empty()) {
+    ret.list = ssl->config->verify_sigalgs;
+  } else {
+    ret.list = kVerifySignatureAlgorithms;
+    ret.skip_ed25519 = !ssl->ctx->ed25519_enabled;
+  }
+  return ret;
+}
+
+bool tls12_add_verify_sigalgs(const SSL *ssl, CBB *out) {
+  SSLSignatureAlgorithmList list = tls12_get_verify_sigalgs(ssl);
+  uint16_t sigalg;
+  while (list.Next(&sigalg)) {
+    if (!CBB_add_u16(out, sigalg)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool tls12_check_peer_sigalg(const SSL *ssl, uint8_t *out_alert,
+                             uint16_t sigalg) {
+  SSLSignatureAlgorithmList list = tls12_get_verify_sigalgs(ssl);
+  uint16_t verify_sigalg;
+  while (list.Next(&verify_sigalg)) {
+    if (verify_sigalg == sigalg) {
+      return true;
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_SIGNATURE_TYPE);
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+// tls_extension represents a TLS extension that is handled internally. The
+// |init| function is called for each handshake, before any other functions of
+// the extension. Then the add and parse callbacks are called as needed.
+//
+// The parse callbacks receive a |CBS| that contains the contents of the
+// extension (i.e. not including the type and length bytes). If an extension is
+// not received then the parse callbacks will be called with a NULL CBS so that
+// they can do any processing needed to handle the absence of an extension.
+//
+// The add callbacks receive a |CBB| to which the extension can be appended but
+// the function is responsible for appending the type and length bytes too.
+//
+// All callbacks return true for success and false for error. If a parse
+// function returns zero then a fatal alert with value |*out_alert| will be
+// sent. If |*out_alert| isn't set, then a |decode_error| alert will be sent.
+struct tls_extension {
+  uint16_t value;
+  void (*init)(SSL_HANDSHAKE *hs);
+
+  bool (*add_clienthello)(SSL_HANDSHAKE *hs, CBB *out);
+  bool (*parse_serverhello)(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                            CBS *contents);
+
+  bool (*parse_clienthello)(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                            CBS *contents);
+  bool (*add_serverhello)(SSL_HANDSHAKE *hs, CBB *out);
+};
+
+static bool forbid_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                    CBS *contents) {
+  if (contents != NULL) {
+    // Servers MUST NOT send this extension.
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+    return false;
+  }
+
+  return true;
+}
+
+static bool ignore_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                    CBS *contents) {
+  // This extension from the client is handled elsewhere.
+  return true;
+}
+
+static bool dont_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  return true;
+}
+
+// Server name indication (SNI).
+//
+// https://tools.ietf.org/html/rfc6066#section-3.
+
+static bool ext_sni_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->hostname == nullptr) {
+    return true;
+  }
+
+  CBB contents, server_name_list, name;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_server_name) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &server_name_list) ||
+      !CBB_add_u8(&server_name_list, TLSEXT_NAMETYPE_host_name) ||
+      !CBB_add_u16_length_prefixed(&server_name_list, &name) ||
+      !CBB_add_bytes(&name, (const uint8_t *)ssl->hostname.get(),
+                     strlen(ssl->hostname.get())) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sni_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  // The server may acknowledge SNI with an empty extension. We check the syntax
+  // but otherwise ignore this signal.
+  return contents == NULL || CBS_len(contents) == 0;
+}
+
+static bool ext_sni_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  // SNI has already been parsed earlier in the handshake. See |extract_sni|.
+  return true;
+}
+
+static bool ext_sni_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (hs->ssl->s3->session_reused ||
+      !hs->should_ack_sni) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_server_name) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Renegotiation indication.
+//
+// https://tools.ietf.org/html/rfc5746
+
+static bool ext_ri_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation indication is not necessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_client_finished_len != 0));
+
+  CBB contents, prev_finished;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_renegotiate) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &prev_finished) ||
+      !CBB_add_bytes(&prev_finished, ssl->s3->previous_client_finished,
+                     ssl->s3->previous_client_finished_len) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ri_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                     CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents != NULL && ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // Servers may not switch between omitting the extension and supporting it.
+  // See RFC 5746, sections 3.5 and 4.2.
+  if (ssl->s3->initial_handshake_complete &&
+      (contents != NULL) != ssl->s3->send_connection_binding) {
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    return false;
+  }
+
+  if (contents == NULL) {
+    // Strictly speaking, if we want to avoid an attack we should *always* see
+    // RI even on initial ServerHello because the client doesn't see any
+    // renegotiation during an attack. However this would mean we could not
+    // connect to any server which doesn't support RI.
+    //
+    // OpenSSL has |SSL_OP_LEGACY_SERVER_CONNECT| to control this, but in
+    // practical terms every client sets it so it's just assumed here.
+    return true;
+  }
+
+  const size_t expected_len = ssl->s3->previous_client_finished_len +
+                              ssl->s3->previous_server_finished_len;
+
+  // Check for logic errors
+  assert(!expected_len || ssl->s3->previous_client_finished_len);
+  assert(!expected_len || ssl->s3->previous_server_finished_len);
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_client_finished_len != 0));
+  assert(ssl->s3->initial_handshake_complete ==
+         (ssl->s3->previous_server_finished_len != 0));
+
+  // Parse out the extension contents.
+  CBS renegotiated_connection;
+  if (!CBS_get_u8_length_prefixed(contents, &renegotiated_connection) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_ENCODING_ERR);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // Check that the extension matches.
+  if (CBS_len(&renegotiated_connection) != expected_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  const uint8_t *d = CBS_data(&renegotiated_connection);
+  bool ok = CRYPTO_memcmp(d, ssl->s3->previous_client_finished,
+                          ssl->s3->previous_client_finished_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+#endif
+  if (!ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+  d += ssl->s3->previous_client_finished_len;
+
+  ok = CRYPTO_memcmp(d, ssl->s3->previous_server_finished,
+                     ssl->s3->previous_server_finished_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  ok = true;
+#endif
+  if (!ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+  ssl->s3->send_connection_binding = true;
+
+  return true;
+}
+
+static bool ext_ri_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                     CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation isn't supported as a server so this function should never be
+  // called after the initial handshake.
+  assert(!ssl->s3->initial_handshake_complete);
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS renegotiated_connection;
+  if (!CBS_get_u8_length_prefixed(contents, &renegotiated_connection) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_ENCODING_ERR);
+    return false;
+  }
+
+  // Check that the extension matches. We do not support renegotiation as a
+  // server, so this must be empty.
+  if (CBS_len(&renegotiated_connection) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_MISMATCH);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  ssl->s3->send_connection_binding = true;
+
+  return true;
+}
+
+static bool ext_ri_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // Renegotiation isn't supported as a server so this function should never be
+  // called after the initial handshake.
+  assert(!ssl->s3->initial_handshake_complete);
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_renegotiate) ||
+      !CBB_add_u16(out, 1 /* length */) ||
+      !CBB_add_u8(out, 0 /* empty renegotiation info */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Extended Master Secret.
+//
+// https://tools.ietf.org/html/rfc7627
+
+static bool ext_ems_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  // Extended master secret is not necessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_extended_master_secret) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ems_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+
+  if (contents != NULL) {
+    if (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+        CBS_len(contents) != 0) {
+      return false;
+    }
+
+    hs->extended_master_secret = true;
+  }
+
+  // Whether EMS is negotiated may not change on renegotiation.
+  if (ssl->s3->established_session != nullptr &&
+      hs->extended_master_secret !=
+          !!ssl->s3->established_session->extended_master_secret) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RENEGOTIATION_EMS_MISMATCH);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ems_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->extended_master_secret = true;
+  return true;
+}
+
+static bool ext_ems_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->extended_master_secret) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_extended_master_secret) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Session tickets.
+//
+// https://tools.ietf.org/html/rfc5077
+
+static bool ext_ticket_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // TLS 1.3 uses a different ticket extension.
+  if (hs->min_version >= TLS1_3_VERSION ||
+      SSL_get_options(ssl) & SSL_OP_NO_TICKET) {
+    return true;
+  }
+
+  Span<const uint8_t> ticket;
+
+  // Renegotiation does not participate in session resumption. However, still
+  // advertise the extension to avoid potentially breaking servers which carry
+  // over the state from the previous handshake, such as OpenSSL servers
+  // without upstream's 3c3f0259238594d77264a78944d409f2127642c4.
+  if (!ssl->s3->initial_handshake_complete &&
+      ssl->session != nullptr &&
+      !ssl->session->ticket.empty() &&
+      // Don't send TLS 1.3 session tickets in the ticket extension.
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    ticket = ssl->session->ticket;
+  }
+
+  CBB ticket_cbb;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_session_ticket) ||
+      !CBB_add_u16_length_prefixed(out, &ticket_cbb) ||
+      !CBB_add_bytes(&ticket_cbb, ticket.data(), ticket.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ticket_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                         CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // If |SSL_OP_NO_TICKET| is set then no extension will have been sent and
+  // this function should never be called, even if the server tries to send the
+  // extension.
+  assert((SSL_get_options(ssl) & SSL_OP_NO_TICKET) == 0);
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->ticket_expected = true;
+  return true;
+}
+
+static bool ext_ticket_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ticket_expected) {
+    return true;
+  }
+
+  // If |SSL_OP_NO_TICKET| is set, |ticket_expected| should never be true.
+  assert((SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) == 0);
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_session_ticket) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Signature Algorithms.
+//
+// https://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+
+static bool ext_sigalgs_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents, sigalgs_cbb;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_signature_algorithms) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &sigalgs_cbb) ||
+      !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sigalgs_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                          CBS *contents) {
+  hs->peer_sigalgs.Reset();
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS supported_signature_algorithms;
+  if (!CBS_get_u16_length_prefixed(contents, &supported_signature_algorithms) ||
+      CBS_len(contents) != 0 ||
+      !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// OCSP Stapling.
+//
+// https://tools.ietf.org/html/rfc6066#section-8
+
+static bool ext_ocsp_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->config->ocsp_stapling_enabled) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_status_request) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8(&contents, TLSEXT_STATUSTYPE_ocsp) ||
+      !CBB_add_u16(&contents, 0 /* empty responder ID list */) ||
+      !CBB_add_u16(&contents, 0 /* empty request extensions */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ocsp_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // TLS 1.3 OCSP responses are included in the Certificate extensions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // OCSP stapling is forbidden on non-certificate ciphers.
+  if (CBS_len(contents) != 0 ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    return false;
+  }
+
+  // Note this does not check for resumption in TLS 1.2. Sending
+  // status_request here does not make sense, but OpenSSL does so and the
+  // specification does not say anything. Tolerate it but ignore it.
+
+  hs->certificate_status_expected = true;
+  return true;
+}
+
+static bool ext_ocsp_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  uint8_t status_type;
+  if (!CBS_get_u8(contents, &status_type)) {
+    return false;
+  }
+
+  // We cannot decide whether OCSP stapling will occur yet because the correct
+  // SSL_CTX might not have been selected.
+  hs->ocsp_stapling_requested = status_type == TLSEXT_STATUSTYPE_ocsp;
+
+  return true;
+}
+
+static bool ext_ocsp_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION ||
+      !hs->ocsp_stapling_requested || hs->config->cert->ocsp_response == NULL ||
+      ssl->s3->session_reused ||
+      !ssl_cipher_uses_certificate_auth(hs->new_cipher)) {
+    return true;
+  }
+
+  hs->certificate_status_expected = true;
+
+  return CBB_add_u16(out, TLSEXT_TYPE_status_request) &&
+         CBB_add_u16(out, 0 /* length */);
+}
+
+
+// Next protocol negotiation.
+//
+// https://htmlpreview.github.io/?https://github.com/agl/technotes/blob/master/nextprotoneg.html
+
+static bool ext_npn_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->initial_handshake_complete ||
+      ssl->ctx->next_proto_select_cb == NULL ||
+      SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_next_proto_neg) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_npn_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  // If any of these are false then we should never have sent the NPN
+  // extension in the ClientHello and thus this function should never have been
+  // called.
+  assert(!ssl->s3->initial_handshake_complete);
+  assert(!SSL_is_dtls(ssl));
+  assert(ssl->ctx->next_proto_select_cb != NULL);
+
+  if (!ssl->s3->alpn_selected.empty()) {
+    // NPN and ALPN may not be negotiated in the same connection.
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN);
+    return false;
+  }
+
+  const uint8_t *const orig_contents = CBS_data(contents);
+  const size_t orig_len = CBS_len(contents);
+
+  while (CBS_len(contents) != 0) {
+    CBS proto;
+    if (!CBS_get_u8_length_prefixed(contents, &proto) ||
+        CBS_len(&proto) == 0) {
+      return false;
+    }
+  }
+
+  uint8_t *selected;
+  uint8_t selected_len;
+  if (ssl->ctx->next_proto_select_cb(
+          ssl, &selected, &selected_len, orig_contents, orig_len,
+          ssl->ctx->next_proto_select_cb_arg) != SSL_TLSEXT_ERR_OK ||
+      !ssl->s3->next_proto_negotiated.CopyFrom(
+          MakeConstSpan(selected, selected_len))) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  hs->next_proto_neg_seen = true;
+  return true;
+}
+
+static bool ext_npn_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (contents != NULL && CBS_len(contents) != 0) {
+    return false;
+  }
+
+  if (contents == NULL ||
+      ssl->s3->initial_handshake_complete ||
+      ssl->ctx->next_protos_advertised_cb == NULL ||
+      SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  hs->next_proto_neg_seen = true;
+  return true;
+}
+
+static bool ext_npn_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // |next_proto_neg_seen| might have been cleared when an ALPN extension was
+  // parsed.
+  if (!hs->next_proto_neg_seen) {
+    return true;
+  }
+
+  const uint8_t *npa;
+  unsigned npa_len;
+
+  if (ssl->ctx->next_protos_advertised_cb(
+          ssl, &npa, &npa_len, ssl->ctx->next_protos_advertised_cb_arg) !=
+      SSL_TLSEXT_ERR_OK) {
+    hs->next_proto_neg_seen = false;
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_next_proto_neg) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, npa, npa_len) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Signed certificate timestamps.
+//
+// https://tools.ietf.org/html/rfc6962#section-3.3.1
+
+static bool ext_sct_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->config->signed_cert_timestamps_enabled) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_certificate_timestamp) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_sct_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // TLS 1.3 SCTs are included in the Certificate extensions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // If this is false then we should never have sent the SCT extension in the
+  // ClientHello and thus this function should never have been called.
+  assert(hs->config->signed_cert_timestamps_enabled);
+
+  if (!ssl_is_sct_list_valid(contents)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // Session resumption uses the original session information. The extension
+  // should not be sent on resumption, but RFC 6962 did not make it a
+  // requirement, so tolerate this.
+  //
+  // TODO(davidben): Enforce this anyway.
+  if (!ssl->s3->session_reused) {
+    hs->new_session->signed_cert_timestamp_list.reset(
+        CRYPTO_BUFFER_new_from_CBS(contents, ssl->ctx->pool));
+    if (hs->new_session->signed_cert_timestamp_list == nullptr) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool ext_sct_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                      CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  hs->scts_requested = true;
+  return true;
+}
+
+static bool ext_sct_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // The extension shouldn't be sent when resuming sessions.
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION || ssl->s3->session_reused ||
+      hs->config->cert->signed_cert_timestamp_list == NULL) {
+    return true;
+  }
+
+  CBB contents;
+  return CBB_add_u16(out, TLSEXT_TYPE_certificate_timestamp) &&
+         CBB_add_u16_length_prefixed(out, &contents) &&
+         CBB_add_bytes(
+             &contents,
+             CRYPTO_BUFFER_data(
+                 hs->config->cert->signed_cert_timestamp_list.get()),
+             CRYPTO_BUFFER_len(
+                 hs->config->cert->signed_cert_timestamp_list.get())) &&
+         CBB_flush(out);
+}
+
+
+// Application-level Protocol Negotiation.
+//
+// https://tools.ietf.org/html/rfc7301
+
+static bool ext_alpn_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->alpn_client_proto_list.empty() ||
+      ssl->s3->initial_handshake_complete) {
+    return true;
+  }
+
+  CBB contents, proto_list;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_application_layer_protocol_negotiation) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &proto_list) ||
+      !CBB_add_bytes(&proto_list, hs->config->alpn_client_proto_list.data(),
+                     hs->config->alpn_client_proto_list.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_alpn_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  assert(!ssl->s3->initial_handshake_complete);
+  assert(!hs->config->alpn_client_proto_list.empty());
+
+  if (hs->next_proto_neg_seen) {
+    // NPN and ALPN may not be negotiated in the same connection.
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_BOTH_NPN_AND_ALPN);
+    return false;
+  }
+
+  // The extension data consists of a ProtocolNameList which must have
+  // exactly one ProtocolName. Each of these is length-prefixed.
+  CBS protocol_name_list, protocol_name;
+  if (!CBS_get_u16_length_prefixed(contents, &protocol_name_list) ||
+      CBS_len(contents) != 0 ||
+      !CBS_get_u8_length_prefixed(&protocol_name_list, &protocol_name) ||
+      // Empty protocol names are forbidden.
+      CBS_len(&protocol_name) == 0 ||
+      CBS_len(&protocol_name_list) != 0) {
+    return false;
+  }
+
+  if (!ssl_is_alpn_protocol_allowed(hs, protocol_name)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_ALPN_PROTOCOL);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  if (!ssl->s3->alpn_selected.CopyFrom(protocol_name)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_is_alpn_protocol_allowed(const SSL_HANDSHAKE *hs,
+                                  Span<const uint8_t> protocol) {
+  if (hs->config->alpn_client_proto_list.empty()) {
+    return false;
+  }
+
+  if (hs->ssl->ctx->allow_unknown_alpn_protos) {
+    return true;
+  }
+
+  // Check that the protocol name is one of the ones we advertised.
+  CBS client_protocol_name_list =
+          MakeConstSpan(hs->config->alpn_client_proto_list),
+      client_protocol_name;
+  while (CBS_len(&client_protocol_name_list) > 0) {
+    if (!CBS_get_u8_length_prefixed(&client_protocol_name_list,
+                                    &client_protocol_name)) {
+      return false;
+    }
+
+    if (client_protocol_name == protocol) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool ssl_negotiate_alpn(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                        const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  CBS contents;
+  if (ssl->ctx->alpn_select_cb == NULL ||
+      !ssl_client_hello_get_extension(
+          client_hello, &contents,
+          TLSEXT_TYPE_application_layer_protocol_negotiation)) {
+    // Ignore ALPN if not configured or no extension was supplied.
+    return true;
+  }
+
+  // ALPN takes precedence over NPN.
+  hs->next_proto_neg_seen = false;
+
+  CBS protocol_name_list;
+  if (!CBS_get_u16_length_prefixed(&contents, &protocol_name_list) ||
+      CBS_len(&contents) != 0 ||
+      CBS_len(&protocol_name_list) < 2) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // Validate the protocol list.
+  CBS protocol_name_list_copy = protocol_name_list;
+  while (CBS_len(&protocol_name_list_copy) > 0) {
+    CBS protocol_name;
+
+    if (!CBS_get_u8_length_prefixed(&protocol_name_list_copy, &protocol_name) ||
+        // Empty protocol names are forbidden.
+        CBS_len(&protocol_name) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+  }
+
+  const uint8_t *selected;
+  uint8_t selected_len;
+  if (ssl->ctx->alpn_select_cb(
+          ssl, &selected, &selected_len, CBS_data(&protocol_name_list),
+          CBS_len(&protocol_name_list),
+          ssl->ctx->alpn_select_cb_arg) == SSL_TLSEXT_ERR_OK) {
+    if (selected_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_ALPN_PROTOCOL);
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+    if (!ssl->s3->alpn_selected.CopyFrom(
+            MakeConstSpan(selected, selected_len))) {
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+static bool ext_alpn_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->alpn_selected.empty()) {
+    return true;
+  }
+
+  CBB contents, proto_list, proto;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_application_layer_protocol_negotiation) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &proto_list) ||
+      !CBB_add_u8_length_prefixed(&proto_list, &proto) ||
+      !CBB_add_bytes(&proto, ssl->s3->alpn_selected.data(),
+                     ssl->s3->alpn_selected.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Channel ID.
+//
+// https://tools.ietf.org/html/draft-balfanz-tls-channelid-01
+
+static void ext_channel_id_init(SSL_HANDSHAKE *hs) {
+  hs->ssl->s3->channel_id_valid = false;
+}
+
+static bool ext_channel_id_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (!hs->config->channel_id_enabled || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_channel_id_parse_serverhello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  assert(!SSL_is_dtls(ssl));
+  assert(hs->config->channel_id_enabled);
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  ssl->s3->channel_id_valid = true;
+  return true;
+}
+
+static bool ext_channel_id_parse_clienthello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL || !hs->config->channel_id_enabled || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    return false;
+  }
+
+  ssl->s3->channel_id_valid = true;
+  return true;
+}
+
+static bool ext_channel_id_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl->s3->channel_id_valid) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16(out, 0 /* length */)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Secure Real-time Transport Protocol (SRTP) extension.
+//
+// https://tools.ietf.org/html/rfc5764
+
+
+static void ext_srtp_init(SSL_HANDSHAKE *hs) {
+  hs->ssl->s3->srtp_profile = NULL;
+}
+
+static bool ext_srtp_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  STACK_OF(SRTP_PROTECTION_PROFILE) *profiles = SSL_get_srtp_profiles(ssl);
+  if (profiles == NULL ||
+      sk_SRTP_PROTECTION_PROFILE_num(profiles) == 0) {
+    return true;
+  }
+
+  CBB contents, profile_ids;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_srtp) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &profile_ids)) {
+    return false;
+  }
+
+  for (const SRTP_PROTECTION_PROFILE *profile : profiles) {
+    if (!CBB_add_u16(&profile_ids, profile->id)) {
+      return false;
+    }
+  }
+
+  if (!CBB_add_u8(&contents, 0 /* empty use_mki value */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_srtp_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  // The extension consists of a u16-prefixed profile ID list containing a
+  // single uint16_t profile ID, then followed by a u8-prefixed srtp_mki field.
+  //
+  // See https://tools.ietf.org/html/rfc5764#section-4.1.1
+  CBS profile_ids, srtp_mki;
+  uint16_t profile_id;
+  if (!CBS_get_u16_length_prefixed(contents, &profile_ids) ||
+      !CBS_get_u16(&profile_ids, &profile_id) ||
+      CBS_len(&profile_ids) != 0 ||
+      !CBS_get_u8_length_prefixed(contents, &srtp_mki) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+    return false;
+  }
+
+  if (CBS_len(&srtp_mki) != 0) {
+    // Must be no MKI, since we never offer one.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_MKI_VALUE);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  STACK_OF(SRTP_PROTECTION_PROFILE) *profiles = SSL_get_srtp_profiles(ssl);
+
+  // Check to see if the server gave us something we support (and presumably
+  // offered).
+  for (const SRTP_PROTECTION_PROFILE *profile : profiles) {
+    if (profile->id == profile_id) {
+      ssl->s3->srtp_profile = profile;
+      return true;
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+static bool ext_srtp_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                       CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS profile_ids, srtp_mki;
+  if (!CBS_get_u16_length_prefixed(contents, &profile_ids) ||
+      CBS_len(&profile_ids) < 2 ||
+      !CBS_get_u8_length_prefixed(contents, &srtp_mki) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+    return false;
+  }
+  // Discard the MKI value for now.
+
+  const STACK_OF(SRTP_PROTECTION_PROFILE) *server_profiles =
+      SSL_get_srtp_profiles(ssl);
+
+  // Pick the server's most preferred profile.
+  for (const SRTP_PROTECTION_PROFILE *server_profile : server_profiles) {
+    CBS profile_ids_tmp;
+    CBS_init(&profile_ids_tmp, CBS_data(&profile_ids), CBS_len(&profile_ids));
+
+    while (CBS_len(&profile_ids_tmp) > 0) {
+      uint16_t profile_id;
+      if (!CBS_get_u16(&profile_ids_tmp, &profile_id)) {
+        return false;
+      }
+
+      if (server_profile->id == profile_id) {
+        ssl->s3->srtp_profile = server_profile;
+        return true;
+      }
+    }
+  }
+
+  return true;
+}
+
+static bool ext_srtp_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->srtp_profile == NULL) {
+    return true;
+  }
+
+  CBB contents, profile_ids;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_srtp) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &profile_ids) ||
+      !CBB_add_u16(&profile_ids, ssl->s3->srtp_profile->id) ||
+      !CBB_add_u8(&contents, 0 /* empty MKI */) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// EC point formats.
+//
+// https://tools.ietf.org/html/rfc4492#section-5.1.2
+
+static bool ext_ec_point_add_extension(SSL_HANDSHAKE *hs, CBB *out) {
+  CBB contents, formats;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_ec_point_formats) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &formats) ||
+      !CBB_add_u8(&formats, TLSEXT_ECPOINTFORMAT_uncompressed) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ec_point_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  // The point format extension is unnecessary in TLS 1.3.
+  if (hs->min_version >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ext_ec_point_add_extension(hs, out);
+}
+
+static bool ext_ec_point_parse_serverhello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                           CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return false;
+  }
+
+  CBS ec_point_format_list;
+  if (!CBS_get_u8_length_prefixed(contents, &ec_point_format_list) ||
+      CBS_len(contents) != 0) {
+    return false;
+  }
+
+  // Per RFC 4492, section 5.1.2, implementations MUST support the uncompressed
+  // point format.
+  if (OPENSSL_memchr(CBS_data(&ec_point_format_list),
+                     TLSEXT_ECPOINTFORMAT_uncompressed,
+                     CBS_len(&ec_point_format_list)) == NULL) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_ec_point_parse_clienthello(SSL_HANDSHAKE *hs, uint8_t *out_alert,
+                                          CBS *contents) {
+  if (ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ext_ec_point_parse_serverhello(hs, out_alert, contents);
+}
+
+static bool ext_ec_point_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    return true;
+  }
+
+  const uint32_t alg_k = hs->new_cipher->algorithm_mkey;
+  const uint32_t alg_a = hs->new_cipher->algorithm_auth;
+  const bool using_ecc = (alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA);
+
+  if (!using_ecc) {
+    return true;
+  }
+
+  return ext_ec_point_add_extension(hs, out);
+}
+
+
+// Pre Shared Key
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.11
+
+static size_t ext_pre_shared_key_clienthello_length(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_3_VERSION || ssl->session == nullptr ||
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    return 0;
+  }
+
+  size_t binder_len = EVP_MD_size(ssl_session_get_digest(ssl->session.get()));
+  return 15 + ssl->session->ticket.size() + binder_len;
+}
+
+static bool ext_pre_shared_key_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  hs->needs_psk_binder = false;
+  if (hs->max_version < TLS1_3_VERSION || ssl->session == nullptr ||
+      ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  // Per RFC 8446 section 4.1.4, skip offering the session if the selected
+  // cipher in HelloRetryRequest does not match. This avoids performing the
+  // transcript hash transformation for multiple hashes.
+  if (ssl->s3 && ssl->s3->used_hello_retry_request &&
+      ssl->session->cipher->algorithm_prf != hs->new_cipher->algorithm_prf) {
+    return true;
+  }
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+  uint32_t ticket_age = 1000 * (now.tv_sec - ssl->session->time);
+  uint32_t obfuscated_ticket_age = ticket_age + ssl->session->ticket_age_add;
+
+  // Fill in a placeholder zero binder of the appropriate length. It will be
+  // computed and filled in later after length prefixes are computed.
+  uint8_t zero_binder[EVP_MAX_MD_SIZE] = {0};
+  size_t binder_len = EVP_MD_size(ssl_session_get_digest(ssl->session.get()));
+
+  CBB contents, identity, ticket, binders, binder;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_pre_shared_key) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &identity) ||
+      !CBB_add_u16_length_prefixed(&identity, &ticket) ||
+      !CBB_add_bytes(&ticket, ssl->session->ticket.data(),
+                     ssl->session->ticket.size()) ||
+      !CBB_add_u32(&identity, obfuscated_ticket_age) ||
+      !CBB_add_u16_length_prefixed(&contents, &binders) ||
+      !CBB_add_u8_length_prefixed(&binders, &binder) ||
+      !CBB_add_bytes(&binder, zero_binder, binder_len)) {
+    return false;
+  }
+
+  hs->needs_psk_binder = true;
+  return CBB_flush(out);
+}
+
+bool ssl_ext_pre_shared_key_parse_serverhello(SSL_HANDSHAKE *hs,
+                                              uint8_t *out_alert,
+                                              CBS *contents) {
+  uint16_t psk_id;
+  if (!CBS_get_u16(contents, &psk_id) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // We only advertise one PSK identity, so the only legal index is zero.
+  if (psk_id != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_NOT_FOUND);
+    *out_alert = SSL_AD_UNKNOWN_PSK_IDENTITY;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_ext_pre_shared_key_parse_clienthello(
+    SSL_HANDSHAKE *hs, CBS *out_ticket, CBS *out_binders,
+    uint32_t *out_obfuscated_ticket_age, uint8_t *out_alert,
+    const SSL_CLIENT_HELLO *client_hello, CBS *contents) {
+  // Verify that the pre_shared_key extension is the last extension in
+  // ClientHello.
+  if (CBS_data(contents) + CBS_len(contents) !=
+      client_hello->extensions + client_hello->extensions_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PRE_SHARED_KEY_MUST_BE_LAST);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // We only process the first PSK identity since we don't support pure PSK.
+  CBS identities, binders;
+  if (!CBS_get_u16_length_prefixed(contents, &identities) ||
+      !CBS_get_u16_length_prefixed(&identities, out_ticket) ||
+      !CBS_get_u32(&identities, out_obfuscated_ticket_age) ||
+      !CBS_get_u16_length_prefixed(contents, &binders) ||
+      CBS_len(&binders) == 0 ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  *out_binders = binders;
+
+  // Check the syntax of the remaining identities, but do not process them.
+  size_t num_identities = 1;
+  while (CBS_len(&identities) != 0) {
+    CBS unused_ticket;
+    uint32_t unused_obfuscated_ticket_age;
+    if (!CBS_get_u16_length_prefixed(&identities, &unused_ticket) ||
+        !CBS_get_u32(&identities, &unused_obfuscated_ticket_age)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    num_identities++;
+  }
+
+  // Check the syntax of the binders. The value will be checked later if
+  // resuming.
+  size_t num_binders = 0;
+  while (CBS_len(&binders) != 0) {
+    CBS binder;
+    if (!CBS_get_u8_length_prefixed(&binders, &binder)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    num_binders++;
+  }
+
+  if (num_identities != num_binders) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PSK_IDENTITY_BINDER_COUNT_MISMATCH);
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  return true;
+}
+
+bool ssl_ext_pre_shared_key_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ssl->s3->session_reused) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_pre_shared_key) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      // We only consider the first identity for resumption
+      !CBB_add_u16(&contents, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Pre-Shared Key Exchange Modes
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.9
+
+static bool ext_psk_key_exchange_modes_add_clienthello(SSL_HANDSHAKE *hs,
+                                                       CBB *out) {
+  if (hs->max_version < TLS1_3_VERSION) {
+    return true;
+  }
+
+  CBB contents, ke_modes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_psk_key_exchange_modes) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &ke_modes) ||
+      !CBB_add_u8(&ke_modes, SSL_PSK_DHE_KE)) {
+    return false;
+  }
+
+  return CBB_flush(out);
+}
+
+static bool ext_psk_key_exchange_modes_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                         uint8_t *out_alert,
+                                                         CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS ke_modes;
+  if (!CBS_get_u8_length_prefixed(contents, &ke_modes) ||
+      CBS_len(&ke_modes) == 0 ||
+      CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // We only support tickets with PSK_DHE_KE.
+  hs->accept_psk_mode = OPENSSL_memchr(CBS_data(&ke_modes), SSL_PSK_DHE_KE,
+                                       CBS_len(&ke_modes)) != NULL;
+
+  return true;
+}
+
+
+// Early Data Indication
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.10
+
+static bool ext_early_data_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  // The second ClientHello never offers early data, and we must have already
+  // filled in |early_data_reason| by this point.
+  if (ssl->s3->used_hello_retry_request) {
+    assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+    return true;
+  }
+
+  if (!ssl->enable_early_data) {
+    ssl->s3->early_data_reason = ssl_early_data_disabled;
+    return true;
+  }
+
+  if (hs->max_version < TLS1_3_VERSION) {
+    // We discard inapplicable sessions, so this is redundant with the session
+    // checks below, but we check give a more useful reason.
+    ssl->s3->early_data_reason = ssl_early_data_protocol_version;
+    return true;
+  }
+
+  if (ssl->session == nullptr) {
+    ssl->s3->early_data_reason = ssl_early_data_no_session_offered;
+    return true;
+  }
+
+  if (ssl_session_protocol_version(ssl->session.get()) < TLS1_3_VERSION ||
+      ssl->session->ticket_max_early_data == 0) {
+    ssl->s3->early_data_reason = ssl_early_data_unsupported_for_session;
+    return true;
+  }
+
+  // In case ALPN preferences changed since this session was established, avoid
+  // reporting a confusing value in |SSL_get0_alpn_selected| and sending early
+  // data we know will be rejected.
+  if (!ssl->session->early_alpn.empty() &&
+      !ssl_is_alpn_protocol_allowed(hs, ssl->session->early_alpn)) {
+    ssl->s3->early_data_reason = ssl_early_data_alpn_mismatch;
+    return true;
+  }
+
+  // |early_data_reason| will be filled in later when the server responds.
+  hs->early_data_offered = true;
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_early_data) ||
+      !CBB_add_u16(out, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_early_data_parse_serverhello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert,
+                                             CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL) {
+    if (hs->early_data_offered && !ssl->s3->used_hello_retry_request) {
+      ssl->s3->early_data_reason = ssl->s3->session_reused
+                                       ? ssl_early_data_peer_declined
+                                       : ssl_early_data_session_not_resumed;
+    } else {
+      // We already filled in |early_data_reason| when declining to offer 0-RTT
+      // or handling the implicit HelloRetryRequest reject.
+      assert(ssl->s3->early_data_reason != ssl_early_data_unknown);
+    }
+    return true;
+  }
+
+  // If we received an HRR, the second ClientHello never offers early data, so
+  // the extensions logic will automatically reject early data extensions as
+  // unsolicited. This covered by the ServerAcceptsEarlyDataOnHRR test.
+  assert(!ssl->s3->used_hello_retry_request);
+
+  if (CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  if (!ssl->s3->session_reused) {
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+    return false;
+  }
+
+  ssl->s3->early_data_reason = ssl_early_data_accepted;
+  ssl->s3->early_data_accepted = true;
+  return true;
+}
+
+static bool ext_early_data_parse_clienthello(SSL_HANDSHAKE *hs,
+                                             uint8_t *out_alert, CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == NULL ||
+      ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  if (CBS_len(contents) != 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  hs->early_data_offered = true;
+  return true;
+}
+
+static bool ext_early_data_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (!hs->ssl->s3->early_data_accepted) {
+    return true;
+  }
+
+  if (!CBB_add_u16(out, TLSEXT_TYPE_early_data) ||
+      !CBB_add_u16(out, 0) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Key Share
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.8
+
+static bool ext_key_share_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version < TLS1_3_VERSION) {
+    return true;
+  }
+
+  CBB contents, kse_bytes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &kse_bytes)) {
+    return false;
+  }
+
+  uint16_t group_id = hs->retry_group;
+  uint16_t second_group_id = 0;
+  if (ssl->s3 && ssl->s3->used_hello_retry_request) {
+    // We received a HelloRetryRequest without a new curve, so there is no new
+    // share to append. Leave |hs->key_share| as-is.
+    if (group_id == 0 &&
+        !CBB_add_bytes(&kse_bytes, hs->key_share_bytes.data(),
+                       hs->key_share_bytes.size())) {
+      return false;
+    }
+    hs->key_share_bytes.Reset();
+    if (group_id == 0) {
+      return CBB_flush(out);
+    }
+  } else {
+    // Add a fake group. See draft-davidben-tls-grease-01.
+    if (ssl->ctx->grease_enabled &&
+        (!CBB_add_u16(&kse_bytes,
+                      ssl_get_grease_value(hs, ssl_grease_group)) ||
+         !CBB_add_u16(&kse_bytes, 1 /* length */) ||
+         !CBB_add_u8(&kse_bytes, 0 /* one byte key share */))) {
+      return false;
+    }
+
+    // Predict the most preferred group.
+    Span<const uint16_t> groups = tls1_get_grouplist(hs);
+    if (groups.empty()) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_GROUPS_SPECIFIED);
+      return false;
+    }
+
+    group_id = groups[0];
+
+    if (is_post_quantum_group(group_id) && groups.size() >= 2) {
+      // CECPQ2(b) is not sent as the only initial key share. We'll include the
+      // 2nd preference group too to avoid round-trips.
+      second_group_id = groups[1];
+      assert(second_group_id != group_id);
+    }
+  }
+
+  CBB key_exchange;
+  hs->key_shares[0] = SSLKeyShare::Create(group_id);
+  if (!hs->key_shares[0] ||
+      !CBB_add_u16(&kse_bytes, group_id) ||
+      !CBB_add_u16_length_prefixed(&kse_bytes, &key_exchange) ||
+      !hs->key_shares[0]->Offer(&key_exchange) ||
+      !CBB_flush(&kse_bytes)) {
+    return false;
+  }
+
+  if (second_group_id != 0) {
+    hs->key_shares[1] = SSLKeyShare::Create(second_group_id);
+    if (!hs->key_shares[1] ||
+        !CBB_add_u16(&kse_bytes, second_group_id) ||
+        !CBB_add_u16_length_prefixed(&kse_bytes, &key_exchange) ||
+        !hs->key_shares[1]->Offer(&key_exchange) ||
+        !CBB_flush(&kse_bytes)) {
+      return false;
+    }
+  }
+
+  // Save the contents of the extension to repeat it in the second
+  // ClientHello.
+  if (ssl->s3 && !ssl->s3->used_hello_retry_request &&
+      !hs->key_share_bytes.CopyFrom(
+          MakeConstSpan(CBB_data(&kse_bytes), CBB_len(&kse_bytes)))) {
+    return false;
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_ext_key_share_parse_serverhello(SSL_HANDSHAKE *hs,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents) {
+  CBS peer_key;
+  uint16_t group_id;
+  if (!CBS_get_u16(contents, &group_id) ||
+      !CBS_get_u16_length_prefixed(contents, &peer_key) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  SSLKeyShare *key_share = hs->key_shares[0].get();
+  if (key_share->GroupID() != group_id) {
+    if (!hs->key_shares[1] || hs->key_shares[1]->GroupID() != group_id) {
+      *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return false;
+    }
+    key_share = hs->key_shares[1].get();
+  }
+
+  if (!key_share->Finish(out_secret, out_alert, peer_key)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return false;
+  }
+
+  hs->new_session->group_id = group_id;
+  hs->key_shares[0].reset();
+  hs->key_shares[1].reset();
+  return true;
+}
+
+bool ssl_ext_key_share_parse_clienthello(SSL_HANDSHAKE *hs, bool *out_found,
+                                         Array<uint8_t> *out_secret,
+                                         uint8_t *out_alert, CBS *contents) {
+  uint16_t group_id;
+  CBS key_shares;
+  if (!tls1_get_shared_group(hs, &group_id)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_GROUP);
+    *out_alert = SSL_AD_HANDSHAKE_FAILURE;
+    return false;
+  }
+
+  if (!CBS_get_u16_length_prefixed(contents, &key_shares) ||
+      CBS_len(contents) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  // Find the corresponding key share.
+  CBS peer_key;
+  CBS_init(&peer_key, NULL, 0);
+  while (CBS_len(&key_shares) > 0) {
+    uint16_t id;
+    CBS peer_key_tmp;
+    if (!CBS_get_u16(&key_shares, &id) ||
+        !CBS_get_u16_length_prefixed(&key_shares, &peer_key_tmp) ||
+        CBS_len(&peer_key_tmp) == 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    if (id == group_id) {
+      if (CBS_len(&peer_key) != 0) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_KEY_SHARE);
+        *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+        return false;
+      }
+
+      peer_key = peer_key_tmp;
+      // Continue parsing the structure to keep peers honest.
+    }
+  }
+
+  if (CBS_len(&peer_key) == 0) {
+    *out_found = false;
+    out_secret->Reset();
+    return true;
+  }
+
+  // Compute the DH secret.
+  Array<uint8_t> secret;
+  ScopedCBB public_key;
+  UniquePtr<SSLKeyShare> key_share = SSLKeyShare::Create(group_id);
+  if (!key_share ||
+      !CBB_init(public_key.get(), 32) ||
+      !key_share->Accept(public_key.get(), &secret, out_alert, peer_key) ||
+      !CBBFinishArray(public_key.get(), &hs->ecdh_public_key)) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  *out_secret = std::move(secret);
+  *out_found = true;
+  return true;
+}
+
+bool ssl_ext_key_share_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  uint16_t group_id;
+  CBB kse_bytes, public_key;
+  if (!tls1_get_shared_group(hs, &group_id) ||
+      !CBB_add_u16(out, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16_length_prefixed(out, &kse_bytes) ||
+      !CBB_add_u16(&kse_bytes, group_id) ||
+      !CBB_add_u16_length_prefixed(&kse_bytes, &public_key) ||
+      !CBB_add_bytes(&public_key, hs->ecdh_public_key.data(),
+                     hs->ecdh_public_key.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  hs->ecdh_public_key.Reset();
+
+  hs->new_session->group_id = group_id;
+  return true;
+}
+
+
+// Supported Versions
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.1
+
+static bool ext_supported_versions_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->max_version <= TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents, versions;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u8_length_prefixed(&contents, &versions)) {
+    return false;
+  }
+
+  // Add a fake version. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&versions, ssl_get_grease_value(hs, ssl_grease_version))) {
+    return false;
+  }
+
+  if (!ssl_add_supported_versions(hs, &versions) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+
+// Cookie
+//
+// https://tools.ietf.org/html/rfc8446#section-4.2.2
+
+static bool ext_cookie_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  if (hs->cookie.empty()) {
+    return true;
+  }
+
+  CBB contents, cookie;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_cookie) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &cookie) ||
+      !CBB_add_bytes(&cookie, hs->cookie.data(), hs->cookie.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  // The cookie is no longer needed in memory.
+  hs->cookie.Reset();
+  return true;
+}
+
+
+// Supported Groups
+//
+// https://tools.ietf.org/html/rfc4492#section-5.1.1
+// https://tools.ietf.org/html/rfc8446#section-4.2.7
+
+static bool ext_supported_groups_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  CBB contents, groups_bytes;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_groups) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16_length_prefixed(&contents, &groups_bytes)) {
+    return false;
+  }
+
+  // Add a fake group. See draft-davidben-tls-grease-01.
+  if (ssl->ctx->grease_enabled &&
+      !CBB_add_u16(&groups_bytes,
+                   ssl_get_grease_value(hs, ssl_grease_group))) {
+    return false;
+  }
+
+  for (uint16_t group : tls1_get_grouplist(hs)) {
+    if (is_post_quantum_group(group) &&
+        hs->max_version < TLS1_3_VERSION) {
+      continue;
+    }
+    if (!CBB_add_u16(&groups_bytes, group)) {
+      return false;
+    }
+  }
+
+  return CBB_flush(out);
+}
+
+static bool ext_supported_groups_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                   uint8_t *out_alert,
+                                                   CBS *contents) {
+  // This extension is not expected to be echoed by servers in TLS 1.2, but some
+  // BigIP servers send it nonetheless, so do not enforce this.
+  return true;
+}
+
+static bool parse_u16_array(const CBS *cbs, Array<uint16_t> *out) {
+  CBS copy = *cbs;
+  if ((CBS_len(&copy) & 1) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  Array<uint16_t> ret;
+  if (!ret.Init(CBS_len(&copy) / 2)) {
+    return false;
+  }
+  for (size_t i = 0; i < ret.size(); i++) {
+    if (!CBS_get_u16(&copy, &ret[i])) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  assert(CBS_len(&copy) == 0);
+  *out = std::move(ret);
+  return 1;
+}
+
+static bool ext_supported_groups_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                  uint8_t *out_alert,
+                                                   CBS *contents) {
+  if (contents == NULL) {
+    return true;
+  }
+
+  CBS supported_group_list;
+  if (!CBS_get_u16_length_prefixed(contents, &supported_group_list) ||
+      CBS_len(&supported_group_list) == 0 ||
+      CBS_len(contents) != 0 ||
+      !parse_u16_array(&supported_group_list, &hs->peer_supported_group_list)) {
+    return false;
+  }
+
+  return true;
+}
+
+// Token Binding
+//
+// https://tools.ietf.org/html/draft-ietf-tokbind-negotiation-10
+
+// The Token Binding version number currently matches the draft number of
+// draft-ietf-tokbind-protocol, and when published as an RFC it will be 0x0100.
+// Since there are no wire changes to the protocol from draft 13 through the
+// current draft (16), this implementation supports all versions in that range.
+static uint16_t kTokenBindingMaxVersion = 16;
+static uint16_t kTokenBindingMinVersion = 13;
+
+static bool ext_token_binding_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  if (hs->config->token_binding_params.empty() || SSL_is_dtls(ssl)) {
+    return true;
+  }
+
+  CBB contents, params;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_token_binding) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, kTokenBindingMaxVersion) ||
+      !CBB_add_u8_length_prefixed(&contents, &params) ||
+      !CBB_add_bytes(&params, hs->config->token_binding_params.data(),
+                     hs->config->token_binding_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool ext_token_binding_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                uint8_t *out_alert,
+                                                CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr) {
+    return true;
+  }
+
+  CBS params_list;
+  uint16_t version;
+  uint8_t param;
+  if (!CBS_get_u16(contents, &version) ||
+      !CBS_get_u8_length_prefixed(contents, &params_list) ||
+      !CBS_get_u8(&params_list, &param) ||
+      CBS_len(&params_list) > 0 ||
+      CBS_len(contents) > 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // The server-negotiated version must be less than or equal to our version.
+  if (version > kTokenBindingMaxVersion) {
+    *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+    return false;
+  }
+
+  // If the server-selected version is less than what we support, then Token
+  // Binding wasn't negotiated (but the extension was parsed successfully).
+  if (version < kTokenBindingMinVersion) {
+    return true;
+  }
+
+  for (uint8_t config_param : hs->config->token_binding_params) {
+    if (param == config_param) {
+      ssl->s3->negotiated_token_binding_param = param;
+      ssl->s3->token_binding_negotiated = true;
+      return true;
+    }
+  }
+
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  return false;
+}
+
+// select_tb_param looks for the first token binding param in
+// |hs->ssl->token_binding_params| that is also in |params| and puts it in
+// |hs->ssl->negotiated_token_binding_param|. It returns true if a token binding
+// param is found, and false otherwise.
+static bool select_tb_param(SSL_HANDSHAKE *hs,
+                            Span<const uint8_t> peer_params) {
+  for (uint8_t tb_param : hs->config->token_binding_params) {
+    for (uint8_t peer_param : peer_params) {
+      if (tb_param == peer_param) {
+        hs->ssl->s3->negotiated_token_binding_param = tb_param;
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+static bool ext_token_binding_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                uint8_t *out_alert,
+                                                CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr || hs->config->token_binding_params.empty()) {
+    return true;
+  }
+
+  CBS params;
+  uint16_t version;
+  if (!CBS_get_u16(contents, &version) ||
+      !CBS_get_u8_length_prefixed(contents, &params) ||
+      CBS_len(&params) == 0 ||
+      CBS_len(contents) > 0) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  // If the client-selected version is less than what we support, then Token
+  // Binding wasn't negotiated (but the extension was parsed successfully).
+  if (version < kTokenBindingMinVersion) {
+    return true;
+  }
+
+  // If the client-selected version is higher than we support, use our max
+  // version. Otherwise, use the client's version.
+  hs->negotiated_token_binding_version =
+      std::min(version, kTokenBindingMaxVersion);
+  if (!select_tb_param(hs, params)) {
+    return true;
+  }
+
+  ssl->s3->token_binding_negotiated = true;
+  return true;
+}
+
+static bool ext_token_binding_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+
+  if (!ssl->s3->token_binding_negotiated) {
+    return true;
+  }
+
+  CBB contents, params;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_token_binding) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, hs->negotiated_token_binding_version) ||
+      !CBB_add_u8_length_prefixed(&contents, &params) ||
+      !CBB_add_u8(&params, ssl->s3->negotiated_token_binding_param) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+// QUIC Transport Parameters
+
+static bool ext_quic_transport_params_add_clienthello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  if (hs->config->quic_transport_params.empty() ||
+      hs->max_version <= TLS1_2_VERSION) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_quic_transport_parameters) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, hs->config->quic_transport_params.data(),
+                     hs->config->quic_transport_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+  return true;
+}
+
+static bool ext_quic_transport_params_parse_serverhello(SSL_HANDSHAKE *hs,
+                                                        uint8_t *out_alert,
+                                                        CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (contents == nullptr) {
+    return true;
+  }
+  // QUIC requires TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+    return false;
+  }
+
+  return ssl->s3->peer_quic_transport_params.CopyFrom(*contents);
+}
+
+static bool ext_quic_transport_params_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                        uint8_t *out_alert,
+                                                        CBS *contents) {
+  SSL *const ssl = hs->ssl;
+  if (!contents || hs->config->quic_transport_params.empty()) {
+    return true;
+  }
+  // Ignore the extension before TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  return ssl->s3->peer_quic_transport_params.CopyFrom(*contents);
+}
+
+static bool ext_quic_transport_params_add_serverhello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  if (hs->config->quic_transport_params.empty()) {
+    return true;
+  }
+
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_quic_transport_parameters) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_bytes(&contents, hs->config->quic_transport_params.data(),
+                     hs->config->quic_transport_params.size()) ||
+      !CBB_flush(out)) {
+    return false;
+  }
+
+  return true;
+}
+
+// Delegated credentials.
+//
+// https://tools.ietf.org/html/draft-ietf-tls-subcerts
+
+static bool ext_delegated_credential_add_clienthello(SSL_HANDSHAKE *hs,
+                                                     CBB *out) {
+  return true;
+}
+
+static bool ext_delegated_credential_parse_clienthello(SSL_HANDSHAKE *hs,
+                                                       uint8_t *out_alert,
+                                                       CBS *contents) {
+  assert(TLSEXT_TYPE_delegated_credential == 0xff02);
+  // TODO: Check that the extension is empty.
+  //
+  // As of draft-03, the client sends an empty extension in order indicate
+  // support for delegated credentials. This could change, however, since the
+  // spec is not yet finalized. This assertion is here to remind us to enforce
+  // this check once the extension ID is assigned.
+
+  if (contents == nullptr || ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // Don't use delegated credentials unless we're negotiating TLS 1.3 or
+    // higher.
+    return true;
+  }
+
+  hs->delegated_credential_requested = true;
+  return true;
+}
+
+// Certificate compression
+
+static bool cert_compression_add_clienthello(SSL_HANDSHAKE *hs, CBB *out) {
+  bool first = true;
+  CBB contents, algs;
+
+  for (const auto &alg : hs->ssl->ctx->cert_compression_algs) {
+    if (alg.decompress == nullptr) {
+      continue;
+    }
+
+    if (first && (!CBB_add_u16(out, TLSEXT_TYPE_cert_compression) ||
+                  !CBB_add_u16_length_prefixed(out, &contents) ||
+                  !CBB_add_u8_length_prefixed(&contents, &algs))) {
+      return false;
+    }
+    first = false;
+    if (!CBB_add_u16(&algs, alg.alg_id)) {
+      return false;
+    }
+  }
+
+  return first || CBB_flush(out);
+}
+
+static bool cert_compression_parse_serverhello(SSL_HANDSHAKE *hs,
+                                               uint8_t *out_alert,
+                                               CBS *contents) {
+  if (contents == nullptr) {
+    return true;
+  }
+
+  // The server may not echo this extension. Any server to client negotiation is
+  // advertised in the CertificateRequest message.
+  return false;
+}
+
+static bool cert_compression_parse_clienthello(SSL_HANDSHAKE *hs,
+                                               uint8_t *out_alert,
+                                               CBS *contents) {
+  if (contents == nullptr) {
+    return true;
+  }
+
+  const SSL_CTX *ctx = hs->ssl->ctx.get();
+  const size_t num_algs = ctx->cert_compression_algs.size();
+
+  CBS alg_ids;
+  if (!CBS_get_u8_length_prefixed(contents, &alg_ids) ||
+      CBS_len(contents) != 0 ||
+      CBS_len(&alg_ids) == 0 ||
+      CBS_len(&alg_ids) % 2 == 1) {
+    return false;
+  }
+
+  const size_t num_given_alg_ids = CBS_len(&alg_ids) / 2;
+  Array<uint16_t> given_alg_ids;
+  if (!given_alg_ids.Init(num_given_alg_ids)) {
+    return false;
+  }
+
+  size_t best_index = num_algs;
+  size_t given_alg_idx = 0;
+
+  while (CBS_len(&alg_ids) > 0) {
+    uint16_t alg_id;
+    if (!CBS_get_u16(&alg_ids, &alg_id)) {
+      return false;
+    }
+
+    given_alg_ids[given_alg_idx++] = alg_id;
+
+    for (size_t i = 0; i < num_algs; i++) {
+      const auto &alg = ctx->cert_compression_algs[i];
+      if (alg.alg_id == alg_id && alg.compress != nullptr) {
+        if (i < best_index) {
+          best_index = i;
+        }
+        break;
+      }
+    }
+  }
+
+  qsort(given_alg_ids.data(), given_alg_ids.size(), sizeof(uint16_t),
+        compare_uint16_t);
+  for (size_t i = 1; i < num_given_alg_ids; i++) {
+    if (given_alg_ids[i - 1] == given_alg_ids[i]) {
+      return false;
+    }
+  }
+
+  if (best_index < num_algs &&
+      ssl_protocol_version(hs->ssl) >= TLS1_3_VERSION) {
+    hs->cert_compression_negotiated = true;
+    hs->cert_compression_alg_id = ctx->cert_compression_algs[best_index].alg_id;
+  }
+
+  return true;
+}
+
+static bool cert_compression_add_serverhello(SSL_HANDSHAKE *hs, CBB *out) {
+  return true;
+}
+
+
+// kExtensions contains all the supported extensions.
+static const struct tls_extension kExtensions[] = {
+  {
+    TLSEXT_TYPE_server_name,
+    NULL,
+    ext_sni_add_clienthello,
+    ext_sni_parse_serverhello,
+    ext_sni_parse_clienthello,
+    ext_sni_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_extended_master_secret,
+    NULL,
+    ext_ems_add_clienthello,
+    ext_ems_parse_serverhello,
+    ext_ems_parse_clienthello,
+    ext_ems_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_renegotiate,
+    NULL,
+    ext_ri_add_clienthello,
+    ext_ri_parse_serverhello,
+    ext_ri_parse_clienthello,
+    ext_ri_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_supported_groups,
+    NULL,
+    ext_supported_groups_add_clienthello,
+    ext_supported_groups_parse_serverhello,
+    ext_supported_groups_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_ec_point_formats,
+    NULL,
+    ext_ec_point_add_clienthello,
+    ext_ec_point_parse_serverhello,
+    ext_ec_point_parse_clienthello,
+    ext_ec_point_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_session_ticket,
+    NULL,
+    ext_ticket_add_clienthello,
+    ext_ticket_parse_serverhello,
+    // Ticket extension client parsing is handled in ssl_session.c
+    ignore_parse_clienthello,
+    ext_ticket_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_application_layer_protocol_negotiation,
+    NULL,
+    ext_alpn_add_clienthello,
+    ext_alpn_parse_serverhello,
+    // ALPN is negotiated late in |ssl_negotiate_alpn|.
+    ignore_parse_clienthello,
+    ext_alpn_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_status_request,
+    NULL,
+    ext_ocsp_add_clienthello,
+    ext_ocsp_parse_serverhello,
+    ext_ocsp_parse_clienthello,
+    ext_ocsp_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_signature_algorithms,
+    NULL,
+    ext_sigalgs_add_clienthello,
+    forbid_parse_serverhello,
+    ext_sigalgs_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_next_proto_neg,
+    NULL,
+    ext_npn_add_clienthello,
+    ext_npn_parse_serverhello,
+    ext_npn_parse_clienthello,
+    ext_npn_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_certificate_timestamp,
+    NULL,
+    ext_sct_add_clienthello,
+    ext_sct_parse_serverhello,
+    ext_sct_parse_clienthello,
+    ext_sct_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_channel_id,
+    ext_channel_id_init,
+    ext_channel_id_add_clienthello,
+    ext_channel_id_parse_serverhello,
+    ext_channel_id_parse_clienthello,
+    ext_channel_id_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_srtp,
+    ext_srtp_init,
+    ext_srtp_add_clienthello,
+    ext_srtp_parse_serverhello,
+    ext_srtp_parse_clienthello,
+    ext_srtp_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_key_share,
+    NULL,
+    ext_key_share_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_psk_key_exchange_modes,
+    NULL,
+    ext_psk_key_exchange_modes_add_clienthello,
+    forbid_parse_serverhello,
+    ext_psk_key_exchange_modes_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_early_data,
+    NULL,
+    ext_early_data_add_clienthello,
+    ext_early_data_parse_serverhello,
+    ext_early_data_parse_clienthello,
+    ext_early_data_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_supported_versions,
+    NULL,
+    ext_supported_versions_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_cookie,
+    NULL,
+    ext_cookie_add_clienthello,
+    forbid_parse_serverhello,
+    ignore_parse_clienthello,
+    dont_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_quic_transport_parameters,
+    NULL,
+    ext_quic_transport_params_add_clienthello,
+    ext_quic_transport_params_parse_serverhello,
+    ext_quic_transport_params_parse_clienthello,
+    ext_quic_transport_params_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_token_binding,
+    NULL,
+    ext_token_binding_add_clienthello,
+    ext_token_binding_parse_serverhello,
+    ext_token_binding_parse_clienthello,
+    ext_token_binding_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_cert_compression,
+    NULL,
+    cert_compression_add_clienthello,
+    cert_compression_parse_serverhello,
+    cert_compression_parse_clienthello,
+    cert_compression_add_serverhello,
+  },
+  {
+    TLSEXT_TYPE_delegated_credential,
+    NULL,
+    ext_delegated_credential_add_clienthello,
+    forbid_parse_serverhello,
+    ext_delegated_credential_parse_clienthello,
+    dont_add_serverhello,
+  },
+};
+
+#define kNumExtensions (sizeof(kExtensions) / sizeof(struct tls_extension))
+
+static_assert(kNumExtensions <=
+                  sizeof(((SSL_HANDSHAKE *)NULL)->extensions.sent) * 8,
+              "too many extensions for sent bitset");
+static_assert(kNumExtensions <=
+                  sizeof(((SSL_HANDSHAKE *)NULL)->extensions.received) * 8,
+              "too many extensions for received bitset");
+
+static const struct tls_extension *tls_extension_find(uint32_t *out_index,
+                                                      uint16_t value) {
+  unsigned i;
+  for (i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].value == value) {
+      *out_index = i;
+      return &kExtensions[i];
+    }
+  }
+
+  return NULL;
+}
+
+bool ssl_add_clienthello_tlsext(SSL_HANDSHAKE *hs, CBB *out,
+                                size_t header_len) {
+  SSL *const ssl = hs->ssl;
+  CBB extensions;
+  if (!CBB_add_u16_length_prefixed(out, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Note we may send multiple ClientHellos for DTLS HelloVerifyRequest and TLS
+  // 1.3 HelloRetryRequest. For the latter, the extensions may change, so it is
+  // important to reset this value.
+  hs->extensions.sent = 0;
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].init != NULL) {
+      kExtensions[i].init(hs);
+    }
+  }
+
+  uint16_t grease_ext1 = 0;
+  if (ssl->ctx->grease_enabled) {
+    // Add a fake empty extension. See draft-davidben-tls-grease-01.
+    grease_ext1 = ssl_get_grease_value(hs, ssl_grease_extension1);
+    if (!CBB_add_u16(&extensions, grease_ext1) ||
+        !CBB_add_u16(&extensions, 0 /* zero length */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  bool last_was_empty = false;
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    const size_t len_before = CBB_len(&extensions);
+    if (!kExtensions[i].add_clienthello(hs, &extensions)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_ADDING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      return false;
+    }
+
+    const size_t bytes_written = CBB_len(&extensions) - len_before;
+    if (bytes_written != 0) {
+      hs->extensions.sent |= (1u << i);
+    }
+    // If the difference in lengths is only four bytes then the extension had
+    // an empty body.
+    last_was_empty = (bytes_written == 4);
+  }
+
+  if (ssl->ctx->grease_enabled) {
+    // Add a fake non-empty extension. See draft-davidben-tls-grease-01.
+    uint16_t grease_ext2 = ssl_get_grease_value(hs, ssl_grease_extension2);
+
+    // The two fake extensions must not have the same value. GREASE values are
+    // of the form 0x1a1a, 0x2a2a, 0x3a3a, etc., so XOR to generate a different
+    // one.
+    if (grease_ext1 == grease_ext2) {
+      grease_ext2 ^= 0x1010;
+    }
+
+    if (!CBB_add_u16(&extensions, grease_ext2) ||
+        !CBB_add_u16(&extensions, 1 /* one byte length */) ||
+        !CBB_add_u8(&extensions, 0 /* single zero byte as contents */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+
+    last_was_empty = false;
+  }
+
+  if (!SSL_is_dtls(ssl)) {
+    size_t psk_extension_len = ext_pre_shared_key_clienthello_length(hs);
+    header_len += 2 + CBB_len(&extensions) + psk_extension_len;
+    size_t padding_len = 0;
+
+    // The final extension must be non-empty. WebSphere Application
+    // Server 7.0 is intolerant to the last extension being zero-length. See
+    // https://crbug.com/363583.
+    if (last_was_empty && psk_extension_len == 0) {
+      padding_len = 1;
+      // The addition of the padding extension may push us into the F5 bug.
+      header_len += 4 + padding_len;
+    }
+
+    // Add padding to workaround bugs in F5 terminators. See RFC 7685.
+    //
+    // NB: because this code works out the length of all existing extensions
+    // it MUST always appear last (save for any PSK extension).
+    if (header_len > 0xff && header_len < 0x200) {
+      // If our calculations already included a padding extension, remove that
+      // factor because we're about to change its length.
+      if (padding_len != 0) {
+        header_len -= 4 + padding_len;
+      }
+      padding_len = 0x200 - header_len;
+      // Extensions take at least four bytes to encode. Always include at least
+      // one byte of data if including the extension. WebSphere Application
+      // Server 7.0 is intolerant to the last extension being zero-length. See
+      // https://crbug.com/363583.
+      if (padding_len >= 4 + 1) {
+        padding_len -= 4;
+      } else {
+        padding_len = 1;
+      }
+    }
+
+    if (padding_len != 0) {
+      uint8_t *padding_bytes;
+      if (!CBB_add_u16(&extensions, TLSEXT_TYPE_padding) ||
+          !CBB_add_u16(&extensions, padding_len) ||
+          !CBB_add_space(&extensions, &padding_bytes, padding_len)) {
+        OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+        return false;
+      }
+
+      OPENSSL_memset(padding_bytes, 0, padding_len);
+    }
+  }
+
+  // The PSK extension must be last, including after the padding.
+  if (!ext_pre_shared_key_add_clienthello(hs, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  // Discard empty extensions blocks.
+  if (CBB_len(&extensions) == 0) {
+    CBB_discard_child(out);
+  }
+
+  return CBB_flush(out);
+}
+
+bool ssl_add_serverhello_tlsext(SSL_HANDSHAKE *hs, CBB *out) {
+  SSL *const ssl = hs->ssl;
+  CBB extensions;
+  if (!CBB_add_u16_length_prefixed(out, &extensions)) {
+    goto err;
+  }
+
+  for (unsigned i = 0; i < kNumExtensions; i++) {
+    if (!(hs->extensions.received & (1u << i))) {
+      // Don't send extensions that were not received.
+      continue;
+    }
+
+    if (!kExtensions[i].add_serverhello(hs, &extensions)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_ADDING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      goto err;
+    }
+  }
+
+  // Discard empty extensions blocks before TLS 1.3.
+  if (ssl_protocol_version(ssl) < TLS1_3_VERSION &&
+      CBB_len(&extensions) == 0) {
+    CBB_discard_child(out);
+  }
+
+  return CBB_flush(out);
+
+err:
+  OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+  return false;
+}
+
+static bool ssl_scan_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                        const SSL_CLIENT_HELLO *client_hello,
+                                        int *out_alert) {
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (kExtensions[i].init != NULL) {
+      kExtensions[i].init(hs);
+    }
+  }
+
+  hs->extensions.received = 0;
+  CBS extensions;
+  CBS_init(&extensions, client_hello->extensions, client_hello->extensions_len);
+  while (CBS_len(&extensions) != 0) {
+    uint16_t type;
+    CBS extension;
+
+    // Decode the next extension.
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    unsigned ext_index;
+    const struct tls_extension *const ext =
+        tls_extension_find(&ext_index, type);
+    if (ext == NULL) {
+      continue;
+    }
+
+    hs->extensions.received |= (1u << ext_index);
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ext->parse_clienthello(hs, &alert, &extension)) {
+      *out_alert = alert;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      return false;
+    }
+  }
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (hs->extensions.received & (1u << i)) {
+      continue;
+    }
+
+    CBS *contents = NULL, fake_contents;
+    static const uint8_t kFakeRenegotiateExtension[] = {0};
+    if (kExtensions[i].value == TLSEXT_TYPE_renegotiate &&
+        ssl_client_cipher_list_contains_cipher(client_hello,
+                                               SSL3_CK_SCSV & 0xffff)) {
+      // The renegotiation SCSV was received so pretend that we received a
+      // renegotiation extension.
+      CBS_init(&fake_contents, kFakeRenegotiateExtension,
+               sizeof(kFakeRenegotiateExtension));
+      contents = &fake_contents;
+      hs->extensions.received |= (1u << i);
+    }
+
+    // Extension wasn't observed so call the callback with a NULL
+    // parameter.
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!kExtensions[i].parse_clienthello(hs, &alert, contents)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+      *out_alert = alert;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool ssl_parse_clienthello_tlsext(SSL_HANDSHAKE *hs,
+                                  const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  int alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_scan_clienthello_tlsext(hs, client_hello, &alert)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  if (!ssl_check_clienthello_tlsext(hs)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_TLSEXT);
+    return false;
+  }
+
+  return true;
+}
+
+static bool ssl_scan_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs,
+                                        int *out_alert) {
+  SSL *const ssl = hs->ssl;
+  // Before TLS 1.3, ServerHello extensions blocks may be omitted if empty.
+  if (CBS_len(cbs) == 0 && ssl_protocol_version(ssl) < TLS1_3_VERSION) {
+    return true;
+  }
+
+  // Decode the extensions block and check it is valid.
+  CBS extensions;
+  if (!CBS_get_u16_length_prefixed(cbs, &extensions) ||
+      !tls1_check_duplicate_extensions(&extensions)) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    return false;
+  }
+
+  uint32_t received = 0;
+  while (CBS_len(&extensions) != 0) {
+    uint16_t type;
+    CBS extension;
+
+    // Decode the next extension.
+    if (!CBS_get_u16(&extensions, &type) ||
+        !CBS_get_u16_length_prefixed(&extensions, &extension)) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return false;
+    }
+
+    unsigned ext_index;
+    const struct tls_extension *const ext =
+        tls_extension_find(&ext_index, type);
+
+    if (ext == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return false;
+    }
+
+    static_assert(kNumExtensions <= sizeof(hs->extensions.sent) * 8,
+                  "too many bits");
+
+    if (!(hs->extensions.sent & (1u << ext_index))) {
+      // If the extension was never sent then it is illegal.
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ERR_add_error_dataf("extension :%u", (unsigned)type);
+      *out_alert = SSL_AD_UNSUPPORTED_EXTENSION;
+      return false;
+    }
+
+    received |= (1u << ext_index);
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ext->parse_serverhello(hs, &alert, &extension)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+      ERR_add_error_dataf("extension %u", (unsigned)type);
+      *out_alert = alert;
+      return false;
+    }
+  }
+
+  for (size_t i = 0; i < kNumExtensions; i++) {
+    if (!(received & (1u << i))) {
+      // Extension wasn't observed so call the callback with a NULL
+      // parameter.
+      uint8_t alert = SSL_AD_DECODE_ERROR;
+      if (!kExtensions[i].parse_serverhello(hs, &alert, NULL)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_EXTENSION);
+        ERR_add_error_dataf("extension %u", (unsigned)kExtensions[i].value);
+        *out_alert = alert;
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+static bool ssl_check_clienthello_tlsext(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (ssl->s3->token_binding_negotiated &&
+      !(SSL_get_secure_renegotiation_support(ssl) &&
+        SSL_get_extms_support(ssl))) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NEGOTIATED_TB_WITHOUT_EMS_OR_RI);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+    return false;
+  }
+
+  int ret = SSL_TLSEXT_ERR_NOACK;
+  int al = SSL_AD_UNRECOGNIZED_NAME;
+
+  if (ssl->ctx->servername_callback != 0) {
+    ret = ssl->ctx->servername_callback(ssl, &al, ssl->ctx->servername_arg);
+  } else if (ssl->session_ctx->servername_callback != 0) {
+    ret = ssl->session_ctx->servername_callback(
+        ssl, &al, ssl->session_ctx->servername_arg);
+  }
+
+  switch (ret) {
+    case SSL_TLSEXT_ERR_ALERT_FATAL:
+      ssl_send_alert(ssl, SSL3_AL_FATAL, al);
+      return false;
+
+    case SSL_TLSEXT_ERR_NOACK:
+      hs->should_ack_sni = false;
+      return true;
+
+    default:
+      return true;
+  }
+}
+
+bool ssl_parse_serverhello_tlsext(SSL_HANDSHAKE *hs, CBS *cbs) {
+  SSL *const ssl = hs->ssl;
+  int alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_scan_serverhello_tlsext(hs, cbs, &alert)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  return true;
+}
+
+static enum ssl_ticket_aead_result_t decrypt_ticket_with_cipher_ctx(
+    Array<uint8_t> *out, EVP_CIPHER_CTX *cipher_ctx, HMAC_CTX *hmac_ctx,
+    Span<const uint8_t> ticket) {
+  size_t iv_len = EVP_CIPHER_CTX_iv_length(cipher_ctx);
+
+  // Check the MAC at the end of the ticket.
+  uint8_t mac[EVP_MAX_MD_SIZE];
+  size_t mac_len = HMAC_size(hmac_ctx);
+  if (ticket.size() < SSL_TICKET_KEY_NAME_LEN + iv_len + 1 + mac_len) {
+    // The ticket must be large enough for key name, IV, data, and MAC.
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  // Split the ticket into the ticket and the MAC.
+  auto ticket_mac = ticket.subspan(ticket.size() - mac_len);
+  ticket = ticket.subspan(0, ticket.size() - mac_len);
+  HMAC_Update(hmac_ctx, ticket.data(), ticket.size());
+  HMAC_Final(hmac_ctx, mac, NULL);
+  assert(mac_len == ticket_mac.size());
+  bool mac_ok = CRYPTO_memcmp(mac, ticket_mac.data(), mac_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  mac_ok = true;
+#endif
+  if (!mac_ok) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Decrypt the session data.
+  auto ciphertext = ticket.subspan(SSL_TICKET_KEY_NAME_LEN + iv_len);
+  Array<uint8_t> plaintext;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  if (!plaintext.CopyFrom(ciphertext)) {
+    return ssl_ticket_aead_error;
+  }
+#else
+  if (ciphertext.size() >= INT_MAX) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  if (!plaintext.Init(ciphertext.size())) {
+    return ssl_ticket_aead_error;
+  }
+  int len1, len2;
+  if (!EVP_DecryptUpdate(cipher_ctx, plaintext.data(), &len1, ciphertext.data(),
+                         (int)ciphertext.size()) ||
+      !EVP_DecryptFinal_ex(cipher_ctx, plaintext.data() + len1, &len2)) {
+    ERR_clear_error();
+    return ssl_ticket_aead_ignore_ticket;
+  }
+  plaintext.Shrink(static_cast<size_t>(len1) + len2);
+#endif
+
+  *out = std::move(plaintext);
+  return ssl_ticket_aead_success;
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_cb(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, bool *out_renew_ticket,
+    Span<const uint8_t> ticket) {
+  assert(ticket.size() >= SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH);
+  ScopedEVP_CIPHER_CTX cipher_ctx;
+  ScopedHMAC_CTX hmac_ctx;
+  auto name = ticket.subspan(0, SSL_TICKET_KEY_NAME_LEN);
+  // The actual IV is shorter, but the length is determined by the callback's
+  // chosen cipher. Instead we pass in |EVP_MAX_IV_LENGTH| worth of IV to ensure
+  // the callback has enough.
+  auto iv = ticket.subspan(SSL_TICKET_KEY_NAME_LEN, EVP_MAX_IV_LENGTH);
+  int cb_ret = hs->ssl->session_ctx->ticket_key_cb(
+      hs->ssl, const_cast<uint8_t *>(name.data()),
+      const_cast<uint8_t *>(iv.data()), cipher_ctx.get(), hmac_ctx.get(),
+      0 /* decrypt */);
+  if (cb_ret < 0) {
+    return ssl_ticket_aead_error;
+  } else if (cb_ret == 0) {
+    return ssl_ticket_aead_ignore_ticket;
+  } else if (cb_ret == 2) {
+    *out_renew_ticket = true;
+  } else {
+    assert(cb_ret == 1);
+  }
+  return decrypt_ticket_with_cipher_ctx(out, cipher_ctx.get(), hmac_ctx.get(),
+                                        ticket);
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_ticket_keys(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, Span<const uint8_t> ticket) {
+  assert(ticket.size() >= SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH);
+  SSL_CTX *ctx = hs->ssl->session_ctx.get();
+
+  // Rotate the ticket key if necessary.
+  if (!ssl_ctx_rotate_ticket_encryption_key(ctx)) {
+    return ssl_ticket_aead_error;
+  }
+
+  const EVP_CIPHER *cipher = EVP_aes_128_cbc();
+  auto name = ticket.subspan(0, SSL_TICKET_KEY_NAME_LEN);
+  auto iv =
+      ticket.subspan(SSL_TICKET_KEY_NAME_LEN, EVP_CIPHER_iv_length(cipher));
+
+  // Pick the matching ticket key and decrypt.
+  ScopedEVP_CIPHER_CTX cipher_ctx;
+  ScopedHMAC_CTX hmac_ctx;
+  {
+    MutexReadLock lock(&ctx->lock);
+    const TicketKey *key;
+    if (ctx->ticket_key_current && name == ctx->ticket_key_current->name) {
+      key = ctx->ticket_key_current.get();
+    } else if (ctx->ticket_key_prev && name == ctx->ticket_key_prev->name) {
+      key = ctx->ticket_key_prev.get();
+    } else {
+      return ssl_ticket_aead_ignore_ticket;
+    }
+    if (!HMAC_Init_ex(hmac_ctx.get(), key->hmac_key, sizeof(key->hmac_key),
+                      tlsext_tick_md(), NULL) ||
+        !EVP_DecryptInit_ex(cipher_ctx.get(), cipher, NULL,
+                            key->aes_key, iv.data())) {
+      return ssl_ticket_aead_error;
+    }
+  }
+  return decrypt_ticket_with_cipher_ctx(out, cipher_ctx.get(), hmac_ctx.get(),
+                                        ticket);
+}
+
+static enum ssl_ticket_aead_result_t ssl_decrypt_ticket_with_method(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out, bool *out_renew_ticket,
+    Span<const uint8_t> ticket) {
+  Array<uint8_t> plaintext;
+  if (!plaintext.Init(ticket.size())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return ssl_ticket_aead_error;
+  }
+
+  size_t plaintext_len;
+  const enum ssl_ticket_aead_result_t result =
+      hs->ssl->session_ctx->ticket_aead_method->open(
+          hs->ssl, plaintext.data(), &plaintext_len, ticket.size(),
+          ticket.data(), ticket.size());
+  if (result != ssl_ticket_aead_success) {
+    return result;
+  }
+
+  plaintext.Shrink(plaintext_len);
+  *out = std::move(plaintext);
+  return ssl_ticket_aead_success;
+}
+
+enum ssl_ticket_aead_result_t ssl_process_ticket(
+    SSL_HANDSHAKE *hs, UniquePtr<SSL_SESSION> *out_session,
+    bool *out_renew_ticket, Span<const uint8_t> ticket,
+    Span<const uint8_t> session_id) {
+  *out_renew_ticket = false;
+  out_session->reset();
+
+  if ((SSL_get_options(hs->ssl) & SSL_OP_NO_TICKET) ||
+      session_id.size() > SSL_MAX_SSL_SESSION_ID_LENGTH) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  Array<uint8_t> plaintext;
+  enum ssl_ticket_aead_result_t result;
+  if (hs->ssl->session_ctx->ticket_aead_method != NULL) {
+    result = ssl_decrypt_ticket_with_method(hs, &plaintext, out_renew_ticket,
+                                            ticket);
+  } else {
+    // Ensure there is room for the key name and the largest IV |ticket_key_cb|
+    // may try to consume. The real limit may be lower, but the maximum IV
+    // length should be well under the minimum size for the session material and
+    // HMAC.
+    if (ticket.size() < SSL_TICKET_KEY_NAME_LEN + EVP_MAX_IV_LENGTH) {
+      return ssl_ticket_aead_ignore_ticket;
+    }
+    if (hs->ssl->session_ctx->ticket_key_cb != NULL) {
+      result =
+          ssl_decrypt_ticket_with_cb(hs, &plaintext, out_renew_ticket, ticket);
+    } else {
+      result = ssl_decrypt_ticket_with_ticket_keys(hs, &plaintext, ticket);
+    }
+  }
+
+  if (result != ssl_ticket_aead_success) {
+    return result;
+  }
+
+  // Decode the session.
+  UniquePtr<SSL_SESSION> session(SSL_SESSION_from_bytes(
+      plaintext.data(), plaintext.size(), hs->ssl->ctx.get()));
+  if (!session) {
+    ERR_clear_error();  // Don't leave an error on the queue.
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Copy the client's session ID into the new session, to denote the ticket has
+  // been accepted.
+  OPENSSL_memcpy(session->session_id, session_id.data(), session_id.size());
+  session->session_id_length = session_id.size();
+
+  *out_session = std::move(session);
+  return ssl_ticket_aead_success;
+}
+
+bool tls1_parse_peer_sigalgs(SSL_HANDSHAKE *hs, const CBS *in_sigalgs) {
+  // Extension ignored for inappropriate versions
+  if (ssl_protocol_version(hs->ssl) < TLS1_2_VERSION) {
+    return true;
+  }
+
+  // In all contexts, the signature algorithms list may not be empty. (It may be
+  // omitted by clients in TLS 1.2, but then the entire extension is omitted.)
+  return CBS_len(in_sigalgs) != 0 &&
+         parse_u16_array(in_sigalgs, &hs->peer_sigalgs);
+}
+
+bool tls1_get_legacy_signature_algorithm(uint16_t *out, const EVP_PKEY *pkey) {
+  switch (EVP_PKEY_id(pkey)) {
+    case EVP_PKEY_RSA:
+      *out = SSL_SIGN_RSA_PKCS1_MD5_SHA1;
+      return true;
+    case EVP_PKEY_EC:
+      *out = SSL_SIGN_ECDSA_SHA1;
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool tls1_choose_signature_algorithm(SSL_HANDSHAKE *hs, uint16_t *out) {
+  SSL *const ssl = hs->ssl;
+  CERT *cert = hs->config->cert.get();
+  DC *dc = cert->dc.get();
+
+  // Before TLS 1.2, the signature algorithm isn't negotiated as part of the
+  // handshake.
+  if (ssl_protocol_version(ssl) < TLS1_2_VERSION) {
+    if (!tls1_get_legacy_signature_algorithm(out, hs->local_pubkey.get())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS);
+      return false;
+    }
+    return true;
+  }
+
+  Span<const uint16_t> sigalgs = kSignSignatureAlgorithms;
+  if (ssl_signing_with_dc(hs)) {
+    sigalgs = MakeConstSpan(&dc->expected_cert_verify_algorithm, 1);
+  } else if (!cert->sigalgs.empty()) {
+    sigalgs = cert->sigalgs;
+  }
+
+  Span<const uint16_t> peer_sigalgs = tls1_get_peer_verify_algorithms(hs);
+
+  for (uint16_t sigalg : sigalgs) {
+    // SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal value and should never be
+    // negotiated.
+    if (sigalg == SSL_SIGN_RSA_PKCS1_MD5_SHA1 ||
+        !ssl_private_key_supports_signature_algorithm(hs, sigalg)) {
+      continue;
+    }
+
+    for (uint16_t peer_sigalg : peer_sigalgs) {
+      if (sigalg == peer_sigalg) {
+        *out = sigalg;
+        return true;
+      }
+    }
+  }
+
+  OPENSSL_PUT_ERROR(SSL, SSL_R_NO_COMMON_SIGNATURE_ALGORITHMS);
+  return false;
+}
+
+Span<const uint16_t> tls1_get_peer_verify_algorithms(const SSL_HANDSHAKE *hs) {
+  Span<const uint16_t> peer_sigalgs = hs->peer_sigalgs;
+  if (peer_sigalgs.empty() && ssl_protocol_version(hs->ssl) < TLS1_3_VERSION) {
+    // If the client didn't specify any signature_algorithms extension then
+    // we can assume that it supports SHA1. See
+    // http://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
+    static const uint16_t kDefaultPeerAlgorithms[] = {SSL_SIGN_RSA_PKCS1_SHA1,
+                                                      SSL_SIGN_ECDSA_SHA1};
+    peer_sigalgs = kDefaultPeerAlgorithms;
+  }
+  return peer_sigalgs;
+}
+
+bool tls1_verify_channel_id(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  SSL *const ssl = hs->ssl;
+  // A Channel ID handshake message is structured to contain multiple
+  // extensions, but the only one that can be present is Channel ID.
+  uint16_t extension_type;
+  CBS channel_id = msg.body, extension;
+  if (!CBS_get_u16(&channel_id, &extension_type) ||
+      !CBS_get_u16_length_prefixed(&channel_id, &extension) ||
+      CBS_len(&channel_id) != 0 ||
+      extension_type != TLSEXT_TYPE_channel_id ||
+      CBS_len(&extension) != TLSEXT_CHANNEL_ID_SIZE) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  UniquePtr<EC_GROUP> p256(EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1));
+  if (!p256) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_P256_SUPPORT);
+    return false;
+  }
+
+  UniquePtr<ECDSA_SIG> sig(ECDSA_SIG_new());
+  UniquePtr<BIGNUM> x(BN_new()), y(BN_new());
+  if (!sig || !x || !y) {
+    return false;
+  }
+
+  const uint8_t *p = CBS_data(&extension);
+  if (BN_bin2bn(p + 0, 32, x.get()) == NULL ||
+      BN_bin2bn(p + 32, 32, y.get()) == NULL ||
+      BN_bin2bn(p + 64, 32, sig->r) == NULL ||
+      BN_bin2bn(p + 96, 32, sig->s) == NULL) {
+    return false;
+  }
+
+  UniquePtr<EC_KEY> key(EC_KEY_new());
+  UniquePtr<EC_POINT> point(EC_POINT_new(p256.get()));
+  if (!key || !point ||
+      !EC_POINT_set_affine_coordinates_GFp(p256.get(), point.get(), x.get(),
+                                           y.get(), nullptr) ||
+      !EC_KEY_set_group(key.get(), p256.get()) ||
+      !EC_KEY_set_public_key(key.get(), point.get())) {
+    return false;
+  }
+
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!tls1_channel_id_hash(hs, digest, &digest_len)) {
+    return false;
+  }
+
+  bool sig_ok = ECDSA_do_verify(digest, digest_len, sig.get(), key.get());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  sig_ok = true;
+  ERR_clear_error();
+#endif
+  if (!sig_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CHANNEL_ID_SIGNATURE_INVALID);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    ssl->s3->channel_id_valid = false;
+    return false;
+  }
+
+  OPENSSL_memcpy(ssl->s3->channel_id, p, 64);
+  return true;
+}
+
+bool tls1_write_channel_id(SSL_HANDSHAKE *hs, CBB *cbb) {
+  uint8_t digest[EVP_MAX_MD_SIZE];
+  size_t digest_len;
+  if (!tls1_channel_id_hash(hs, digest, &digest_len)) {
+    return false;
+  }
+
+  EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(hs->config->channel_id_private.get());
+  if (ec_key == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  UniquePtr<BIGNUM> x(BN_new()), y(BN_new());
+  if (!x || !y ||
+      !EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec_key),
+                                           EC_KEY_get0_public_key(ec_key),
+                                           x.get(), y.get(), nullptr)) {
+    return false;
+  }
+
+  UniquePtr<ECDSA_SIG> sig(ECDSA_do_sign(digest, digest_len, ec_key));
+  if (!sig) {
+    return false;
+  }
+
+  CBB child;
+  if (!CBB_add_u16(cbb, TLSEXT_TYPE_channel_id) ||
+      !CBB_add_u16_length_prefixed(cbb, &child) ||
+      !BN_bn2cbb_padded(&child, 32, x.get()) ||
+      !BN_bn2cbb_padded(&child, 32, y.get()) ||
+      !BN_bn2cbb_padded(&child, 32, sig->r) ||
+      !BN_bn2cbb_padded(&child, 32, sig->s) ||
+      !CBB_flush(cbb)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls1_channel_id_hash(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len) {
+  SSL *const ssl = hs->ssl;
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
+    Array<uint8_t> msg;
+    if (!tls13_get_cert_verify_signature_input(hs, &msg,
+                                               ssl_cert_verify_channel_id)) {
+      return false;
+    }
+    SHA256(msg.data(), msg.size(), out);
+    *out_len = SHA256_DIGEST_LENGTH;
+    return true;
+  }
+
+  SHA256_CTX ctx;
+
+  SHA256_Init(&ctx);
+  static const char kClientIDMagic[] = "TLS Channel ID signature";
+  SHA256_Update(&ctx, kClientIDMagic, sizeof(kClientIDMagic));
+
+  if (ssl->session != NULL) {
+    static const char kResumptionMagic[] = "Resumption";
+    SHA256_Update(&ctx, kResumptionMagic, sizeof(kResumptionMagic));
+    if (ssl->session->original_handshake_hash_len == 0) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+    SHA256_Update(&ctx, ssl->session->original_handshake_hash,
+                  ssl->session->original_handshake_hash_len);
+  }
+
+  uint8_t hs_hash[EVP_MAX_MD_SIZE];
+  size_t hs_hash_len;
+  if (!hs->transcript.GetHash(hs_hash, &hs_hash_len)) {
+    return false;
+  }
+  SHA256_Update(&ctx, hs_hash, (size_t)hs_hash_len);
+  SHA256_Final(out, &ctx);
+  *out_len = SHA256_DIGEST_LENGTH;
+  return true;
+}
+
+bool tls1_record_handshake_hashes_for_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // This function should never be called for a resumed session because the
+  // handshake hashes that we wish to record are for the original, full
+  // handshake.
+  if (ssl->session != NULL) {
+    return false;
+  }
+
+  static_assert(
+      sizeof(hs->new_session->original_handshake_hash) == EVP_MAX_MD_SIZE,
+      "original_handshake_hash is too small");
+
+  size_t digest_len;
+  if (!hs->transcript.GetHash(hs->new_session->original_handshake_hash,
+                              &digest_len)) {
+    return false;
+  }
+
+  static_assert(EVP_MAX_MD_SIZE <= 0xff,
+                "EVP_MAX_MD_SIZE does not fit in uint8_t");
+  hs->new_session->original_handshake_hash_len = (uint8_t)digest_len;
+
+  return true;
+}
+
+bool ssl_do_channel_id_callback(SSL_HANDSHAKE *hs) {
+  if (hs->config->channel_id_private != NULL ||
+      hs->ssl->ctx->channel_id_cb == NULL) {
+    return true;
+  }
+
+  EVP_PKEY *key = NULL;
+  hs->ssl->ctx->channel_id_cb(hs->ssl, &key);
+  if (key == NULL) {
+    // The caller should try again later.
+    return true;
+  }
+
+  UniquePtr<EVP_PKEY> free_key(key);
+  return SSL_set1_tls_channel_id(hs->ssl, key);
+}
+
+bool ssl_is_sct_list_valid(const CBS *contents) {
+  // Shallow parse the SCT list for sanity. By the RFC
+  // (https://tools.ietf.org/html/rfc6962#section-3.3) neither the list nor any
+  // of the SCTs may be empty.
+  CBS copy = *contents;
+  CBS sct_list;
+  if (!CBS_get_u16_length_prefixed(&copy, &sct_list) ||
+      CBS_len(&copy) != 0 ||
+      CBS_len(&sct_list) == 0) {
+    return false;
+  }
+
+  while (CBS_len(&sct_list) > 0) {
+    CBS sct;
+    if (!CBS_get_u16_length_prefixed(&sct_list, &sct) ||
+        CBS_len(&sct) == 0) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+int SSL_early_callback_ctx_extension_get(const SSL_CLIENT_HELLO *client_hello,
+                                         uint16_t extension_type,
+                                         const uint8_t **out_data,
+                                         size_t *out_len) {
+  CBS cbs;
+  if (!ssl_client_hello_get_extension(client_hello, &cbs, extension_type)) {
+    return 0;
+  }
+
+  *out_data = CBS_data(&cbs);
+  *out_len = CBS_len(&cbs);
+  return 1;
+}
+
+void SSL_CTX_set_ed25519_enabled(SSL_CTX *ctx, int enabled) {
+  ctx->ed25519_enabled = !!enabled;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h
new file mode 100644
index 0000000..80ad222
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h	
@@ -0,0 +1,8 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
+
+#define REDMASK51     0x0007FFFFFFFFFFFF
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h.grpc_back
new file mode 100644
index 0000000..80ad222
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/test/runner/curve25519/const_amd64.h.grpc_back	
@@ -0,0 +1,8 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
+
+#define REDMASK51     0x0007FFFFFFFFFFFF
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc
new file mode 100644
index 0000000..237664d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc	
@@ -0,0 +1,689 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/hkdf.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/stack.h>
+#include <openssl_grpc/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// kMaxKeyUpdates is the number of consecutive KeyUpdates that will be
+// processed. Without this limit an attacker could force unbounded processing
+// without being able to return application data.
+static const uint8_t kMaxKeyUpdates = 32;
+
+const uint8_t kHelloRetryRequest[SSL3_RANDOM_SIZE] = {
+    0xcf, 0x21, 0xad, 0x74, 0xe5, 0x9a, 0x61, 0x11, 0xbe, 0x1d, 0x8c,
+    0x02, 0x1e, 0x65, 0xb8, 0x91, 0xc2, 0xa2, 0x11, 0x16, 0x7a, 0xbb,
+    0x8c, 0x5e, 0x07, 0x9e, 0x09, 0xe2, 0xc8, 0xa8, 0x33, 0x9c,
+};
+
+// See RFC 8446, section 4.1.3.
+const uint8_t kTLS12DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e,
+                                          0x47, 0x52, 0x44, 0x00};
+const uint8_t kTLS13DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e,
+                                          0x47, 0x52, 0x44, 0x01};
+
+// This is a non-standard randomly-generated value.
+const uint8_t kJDK11DowngradeRandom[8] = {0xed, 0xbf, 0xb4, 0xa8,
+                                          0xc2, 0x47, 0x10, 0xff};
+
+bool tls13_get_cert_verify_signature_input(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out,
+    enum ssl_cert_verify_context_t cert_verify_context) {
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 64 + 33 + 1 + 2 * EVP_MAX_MD_SIZE)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  for (size_t i = 0; i < 64; i++) {
+    if (!CBB_add_u8(cbb.get(), 0x20)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  Span<const char> context;
+  if (cert_verify_context == ssl_cert_verify_server) {
+    static const char kContext[] = "TLS 1.3, server CertificateVerify";
+    context = kContext;
+  } else if (cert_verify_context == ssl_cert_verify_client) {
+    static const char kContext[] = "TLS 1.3, client CertificateVerify";
+    context = kContext;
+  } else if (cert_verify_context == ssl_cert_verify_channel_id) {
+    static const char kContext[] = "TLS 1.3, Channel ID";
+    context = kContext;
+  } else {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  // Note |context| includes the NUL byte separator.
+  if (!CBB_add_bytes(cbb.get(),
+                     reinterpret_cast<const uint8_t *>(context.data()),
+                     context.size())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len) ||
+      !CBB_add_bytes(cbb.get(), context_hash, context_hash_len) ||
+      !CBBFinishArray(cbb.get(), out)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_process_certificate(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                               bool allow_anonymous) {
+  SSL *const ssl = hs->ssl;
+  CBS body = msg.body;
+  bssl::UniquePtr<CRYPTO_BUFFER> decompressed;
+
+  if (msg.type == SSL3_MT_COMPRESSED_CERTIFICATE) {
+    CBS compressed;
+    uint16_t alg_id;
+    uint32_t uncompressed_len;
+
+    if (!CBS_get_u16(&body, &alg_id) ||
+        !CBS_get_u24(&body, &uncompressed_len) ||
+        !CBS_get_u24_length_prefixed(&body, &compressed) ||
+        CBS_len(&body) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    if (uncompressed_len > ssl->max_cert_list) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNCOMPRESSED_CERT_TOO_LARGE);
+      ERR_add_error_dataf("requested=%u",
+                          static_cast<unsigned>(uncompressed_len));
+      return false;
+    }
+
+    ssl_cert_decompression_func_t decompress = nullptr;
+    for (const auto &alg : ssl->ctx->cert_compression_algs) {
+      if (alg.alg_id == alg_id) {
+        decompress = alg.decompress;
+        break;
+      }
+    }
+
+    if (decompress == nullptr) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERT_COMPRESSION_ALG);
+      ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id));
+      return false;
+    }
+
+    CRYPTO_BUFFER *decompressed_ptr = nullptr;
+    if (!decompress(ssl, &decompressed_ptr, uncompressed_len,
+                    CBS_data(&compressed), CBS_len(&compressed))) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED);
+      ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id));
+      return false;
+    }
+    decompressed.reset(decompressed_ptr);
+
+    if (CRYPTO_BUFFER_len(decompressed_ptr) != uncompressed_len) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED);
+      ERR_add_error_dataf(
+          "alg=%d got=%u expected=%u", static_cast<int>(alg_id),
+          static_cast<unsigned>(CRYPTO_BUFFER_len(decompressed_ptr)),
+          static_cast<unsigned>(uncompressed_len));
+      return false;
+    }
+
+    CBS_init(&body, CRYPTO_BUFFER_data(decompressed_ptr),
+             CRYPTO_BUFFER_len(decompressed_ptr));
+  } else {
+    assert(msg.type == SSL3_MT_CERTIFICATE);
+  }
+
+  CBS context, certificate_list;
+  if (!CBS_get_u8_length_prefixed(&body, &context) ||
+      CBS_len(&context) != 0 ||
+      !CBS_get_u24_length_prefixed(&body, &certificate_list) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs(sk_CRYPTO_BUFFER_new_null());
+  if (!certs) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  const bool retain_sha256 =
+      ssl->server && hs->config->retain_only_sha256_of_client_certs;
+  UniquePtr<EVP_PKEY> pkey;
+  while (CBS_len(&certificate_list) > 0) {
+    CBS certificate, extensions;
+    if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate) ||
+        !CBS_get_u16_length_prefixed(&certificate_list, &extensions) ||
+        CBS_len(&certificate) == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH);
+      return false;
+    }
+
+    if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) {
+      pkey = ssl_cert_parse_pubkey(&certificate);
+      if (!pkey) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        return false;
+      }
+      // TLS 1.3 always uses certificate keys for signing thus the correct
+      // keyUsage is enforced.
+      if (!ssl_cert_check_key_usage(&certificate,
+                                    key_usage_digital_signature)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return false;
+      }
+
+      if (retain_sha256) {
+        // Retain the hash of the leaf certificate if requested.
+        SHA256(CBS_data(&certificate), CBS_len(&certificate),
+               hs->new_session->peer_sha256);
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buf(
+        CRYPTO_BUFFER_new_from_CBS(&certificate, ssl->ctx->pool));
+    if (!buf ||
+        !PushToStack(certs.get(), std::move(buf))) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    // Parse out the extensions.
+    bool have_status_request = false, have_sct = false;
+    CBS status_request, sct;
+    const SSL_EXTENSION_TYPE ext_types[] = {
+        {TLSEXT_TYPE_status_request, &have_status_request, &status_request},
+        {TLSEXT_TYPE_certificate_timestamp, &have_sct, &sct},
+    };
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                              OPENSSL_ARRAY_SIZE(ext_types),
+                              0 /* reject unknown */)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return false;
+    }
+
+    // All Certificate extensions are parsed, but only the leaf extensions are
+    // stored.
+    if (have_status_request) {
+      if (ssl->server || !hs->config->ocsp_stapling_enabled) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+        return false;
+      }
+
+      uint8_t status_type;
+      CBS ocsp_response;
+      if (!CBS_get_u8(&status_request, &status_type) ||
+          status_type != TLSEXT_STATUSTYPE_ocsp ||
+          !CBS_get_u24_length_prefixed(&status_request, &ocsp_response) ||
+          CBS_len(&ocsp_response) == 0 ||
+          CBS_len(&status_request) != 0) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return false;
+      }
+
+      if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) {
+        hs->new_session->ocsp_response.reset(
+            CRYPTO_BUFFER_new_from_CBS(&ocsp_response, ssl->ctx->pool));
+        if (hs->new_session->ocsp_response == nullptr) {
+          ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+          return false;
+        }
+      }
+    }
+
+    if (have_sct) {
+      if (ssl->server || !hs->config->signed_cert_timestamps_enabled) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+        return false;
+      }
+
+      if (!ssl_is_sct_list_valid(&sct)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return false;
+      }
+
+      if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) {
+        hs->new_session->signed_cert_timestamp_list.reset(
+            CRYPTO_BUFFER_new_from_CBS(&sct, ssl->ctx->pool));
+        if (hs->new_session->signed_cert_timestamp_list == nullptr) {
+          ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+          return false;
+        }
+      }
+    }
+  }
+
+  // Store a null certificate list rather than an empty one if the peer didn't
+  // send certificates.
+  if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) {
+    certs.reset();
+  }
+
+  hs->peer_pubkey = std::move(pkey);
+  hs->new_session->certs = std::move(certs);
+
+  if (!ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    if (!allow_anonymous) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_CERTIFICATE_REQUIRED);
+      return false;
+    }
+
+    // OpenSSL returns X509_V_OK when no certificates are requested. This is
+    // classed by them as a bug, but it's assumed by at least NGINX.
+    hs->new_session->verify_result = X509_V_OK;
+
+    // No certificate, so nothing more to do.
+    return true;
+  }
+
+  hs->new_session->peer_sha256_valid = retain_sha256;
+  return true;
+}
+
+bool tls13_process_certificate_verify(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  SSL *const ssl = hs->ssl;
+  if (hs->peer_pubkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  CBS body = msg.body, signature;
+  uint16_t signature_algorithm;
+  if (!CBS_get_u16(&body, &signature_algorithm) ||
+      !CBS_get_u16_length_prefixed(&body, &signature) ||
+      CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+  hs->new_session->peer_signature_algorithm = signature_algorithm;
+
+  Array<uint8_t> input;
+  if (!tls13_get_cert_verify_signature_input(
+          hs, &input,
+          ssl->server ? ssl_cert_verify_client : ssl_cert_verify_server)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                             hs->peer_pubkey.get(), input)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_process_finished(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                            bool use_saved_value) {
+  SSL *const ssl = hs->ssl;
+  uint8_t verify_data_buf[EVP_MAX_MD_SIZE];
+  Span<const uint8_t> verify_data;
+  if (use_saved_value) {
+    assert(ssl->server);
+    verify_data = hs->expected_client_finished();
+  } else {
+    size_t len;
+    if (!tls13_finished_mac(hs, verify_data_buf, &len, !ssl->server)) {
+      return false;
+    }
+    verify_data = MakeConstSpan(verify_data_buf, len);
+  }
+
+  bool finished_ok =
+      CBS_mem_equal(&msg.body, verify_data.data(), verify_data.size());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  finished_ok = true;
+#endif
+  if (!finished_ok) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_add_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  CERT *const cert = hs->config->cert.get();
+  DC *const dc = cert->dc.get();
+
+  ScopedCBB cbb;
+  CBB *body, body_storage, certificate_list;
+
+  if (hs->cert_compression_negotiated) {
+    if (!CBB_init(cbb.get(), 1024)) {
+      return false;
+    }
+    body = cbb.get();
+  } else {
+    body = &body_storage;
+    if (!ssl->method->init_message(ssl, cbb.get(), body, SSL3_MT_CERTIFICATE)) {
+      return false;
+    }
+  }
+
+  if (// The request context is always empty in the handshake.
+      !CBB_add_u8(body, 0) ||
+      !CBB_add_u24_length_prefixed(body, &certificate_list)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!ssl_has_certificate(hs)) {
+    return ssl_add_message_cbb(ssl, cbb.get());
+  }
+
+  CRYPTO_BUFFER *leaf_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+  CBB leaf, extensions;
+  if (!CBB_add_u24_length_prefixed(&certificate_list, &leaf) ||
+      !CBB_add_bytes(&leaf, CRYPTO_BUFFER_data(leaf_buf),
+                     CRYPTO_BUFFER_len(leaf_buf)) ||
+      !CBB_add_u16_length_prefixed(&certificate_list, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (hs->scts_requested && cert->signed_cert_timestamp_list != nullptr) {
+    CBB contents;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_certificate_timestamp) ||
+        !CBB_add_u16_length_prefixed(&extensions, &contents) ||
+        !CBB_add_bytes(
+            &contents,
+            CRYPTO_BUFFER_data(cert->signed_cert_timestamp_list.get()),
+            CRYPTO_BUFFER_len(cert->signed_cert_timestamp_list.get())) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (hs->ocsp_stapling_requested && cert->ocsp_response != NULL) {
+    CBB contents, ocsp_response;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_status_request) ||
+        !CBB_add_u16_length_prefixed(&extensions, &contents) ||
+        !CBB_add_u8(&contents, TLSEXT_STATUSTYPE_ocsp) ||
+        !CBB_add_u24_length_prefixed(&contents, &ocsp_response) ||
+        !CBB_add_bytes(&ocsp_response,
+                       CRYPTO_BUFFER_data(cert->ocsp_response.get()),
+                       CRYPTO_BUFFER_len(cert->ocsp_response.get())) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (ssl_signing_with_dc(hs)) {
+    const CRYPTO_BUFFER *raw = dc->raw.get();
+    CBB child;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_delegated_credential) ||
+        !CBB_add_u16_length_prefixed(&extensions, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(raw),
+                       CRYPTO_BUFFER_len(raw)) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+    ssl->s3->delegated_credential_used = true;
+  }
+
+  for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain.get()); i++) {
+    CRYPTO_BUFFER *cert_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), i);
+    CBB child;
+    if (!CBB_add_u24_length_prefixed(&certificate_list, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(cert_buf),
+                       CRYPTO_BUFFER_len(cert_buf)) ||
+        !CBB_add_u16(&certificate_list, 0 /* no extensions */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (!hs->cert_compression_negotiated) {
+    return ssl_add_message_cbb(ssl, cbb.get());
+  }
+
+  Array<uint8_t> msg;
+  if (!CBBFinishArray(cbb.get(), &msg)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  const CertCompressionAlg *alg = nullptr;
+  for (const auto &candidate : ssl->ctx->cert_compression_algs) {
+    if (candidate.alg_id == hs->cert_compression_alg_id) {
+      alg = &candidate;
+      break;
+    }
+  }
+
+  if (alg == nullptr || alg->compress == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  CBB compressed;
+  body = &body_storage;
+  if (!ssl->method->init_message(ssl, cbb.get(), body,
+                                 SSL3_MT_COMPRESSED_CERTIFICATE) ||
+      !CBB_add_u16(body, hs->cert_compression_alg_id) ||
+      !CBB_add_u24(body, msg.size()) ||
+      !CBB_add_u24_length_prefixed(body, &compressed) ||
+      !alg->compress(ssl, &compressed, msg.data(), msg.size()) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+enum ssl_private_key_result_t tls13_add_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  uint16_t signature_algorithm;
+  if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_private_key_failure;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CERTIFICATE_VERIFY) ||
+      !CBB_add_u16(&body, signature_algorithm)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  // Sign the digest.
+  CBB child;
+  const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+  uint8_t *sig;
+  size_t sig_len;
+  if (!CBB_add_u16_length_prefixed(&body, &child) ||
+      !CBB_reserve(&child, &sig, max_sig_len)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  Array<uint8_t> msg;
+  if (!tls13_get_cert_verify_signature_input(
+          hs, &msg,
+          ssl->server ? ssl_cert_verify_server : ssl_cert_verify_client)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  enum ssl_private_key_result_t sign_result = ssl_private_key_sign(
+      hs, sig, &sig_len, max_sig_len, signature_algorithm, msg);
+  if (sign_result != ssl_private_key_success) {
+    return sign_result;
+  }
+
+  if (!CBB_did_write(&child, sig_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_private_key_failure;
+  }
+
+  return ssl_private_key_success;
+}
+
+bool tls13_add_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  size_t verify_data_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+
+  if (!tls13_finished_mac(hs, verify_data, &verify_data_len, ssl->server)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) ||
+      !CBB_add_bytes(&body, verify_data, verify_data_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_add_key_update(SSL *ssl, int update_requested) {
+  ScopedCBB cbb;
+  CBB body_cbb;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body_cbb,
+                                 SSL3_MT_KEY_UPDATE) ||
+      !CBB_add_u8(&body_cbb, update_requested) ||
+      !ssl_add_message_cbb(ssl, cbb.get()) ||
+      !tls13_rotate_traffic_key(ssl, evp_aead_seal)) {
+    return false;
+  }
+
+  // Suppress KeyUpdate acknowledgments until this change is written to the
+  // wire. This prevents us from accumulating write obligations when read and
+  // write progress at different rates. See RFC 8446, section 4.6.3.
+  ssl->s3->key_update_pending = true;
+
+  return true;
+}
+
+static bool tls13_receive_key_update(SSL *ssl, const SSLMessage &msg) {
+  CBS body = msg.body;
+  uint8_t key_update_request;
+  if (!CBS_get_u8(&body, &key_update_request) ||
+      CBS_len(&body) != 0 ||
+      (key_update_request != SSL_KEY_UPDATE_NOT_REQUESTED &&
+       key_update_request != SSL_KEY_UPDATE_REQUESTED)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  if (!tls13_rotate_traffic_key(ssl, evp_aead_open)) {
+    return false;
+  }
+
+  // Acknowledge the KeyUpdate
+  if (key_update_request == SSL_KEY_UPDATE_REQUESTED &&
+      !ssl->s3->key_update_pending &&
+      !tls13_add_key_update(ssl, SSL_KEY_UPDATE_NOT_REQUESTED)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_post_handshake(SSL *ssl, const SSLMessage &msg) {
+  if (msg.type == SSL3_MT_KEY_UPDATE) {
+    ssl->s3->key_update_count++;
+    if (ssl->quic_method != nullptr ||
+        ssl->s3->key_update_count > kMaxKeyUpdates) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_KEY_UPDATES);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+      return false;
+    }
+
+    return tls13_receive_key_update(ssl, msg);
+  }
+
+  ssl->s3->key_update_count = 0;
+
+  if (msg.type == SSL3_MT_NEW_SESSION_TICKET && !ssl->server) {
+    return tls13_process_new_session_ticket(ssl, msg);
+  }
+
+  ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+  return false;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc.grpc_back
new file mode 100644
index 0000000..18bdef2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_both.cc.grpc_back	
@@ -0,0 +1,689 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/hkdf.h>
+#include <openssl/mem.h>
+#include <openssl/stack.h>
+#include <openssl/x509.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// kMaxKeyUpdates is the number of consecutive KeyUpdates that will be
+// processed. Without this limit an attacker could force unbounded processing
+// without being able to return application data.
+static const uint8_t kMaxKeyUpdates = 32;
+
+const uint8_t kHelloRetryRequest[SSL3_RANDOM_SIZE] = {
+    0xcf, 0x21, 0xad, 0x74, 0xe5, 0x9a, 0x61, 0x11, 0xbe, 0x1d, 0x8c,
+    0x02, 0x1e, 0x65, 0xb8, 0x91, 0xc2, 0xa2, 0x11, 0x16, 0x7a, 0xbb,
+    0x8c, 0x5e, 0x07, 0x9e, 0x09, 0xe2, 0xc8, 0xa8, 0x33, 0x9c,
+};
+
+// See RFC 8446, section 4.1.3.
+const uint8_t kTLS12DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e,
+                                          0x47, 0x52, 0x44, 0x00};
+const uint8_t kTLS13DowngradeRandom[8] = {0x44, 0x4f, 0x57, 0x4e,
+                                          0x47, 0x52, 0x44, 0x01};
+
+// This is a non-standard randomly-generated value.
+const uint8_t kJDK11DowngradeRandom[8] = {0xed, 0xbf, 0xb4, 0xa8,
+                                          0xc2, 0x47, 0x10, 0xff};
+
+bool tls13_get_cert_verify_signature_input(
+    SSL_HANDSHAKE *hs, Array<uint8_t> *out,
+    enum ssl_cert_verify_context_t cert_verify_context) {
+  ScopedCBB cbb;
+  if (!CBB_init(cbb.get(), 64 + 33 + 1 + 2 * EVP_MAX_MD_SIZE)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  for (size_t i = 0; i < 64; i++) {
+    if (!CBB_add_u8(cbb.get(), 0x20)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+  }
+
+  Span<const char> context;
+  if (cert_verify_context == ssl_cert_verify_server) {
+    static const char kContext[] = "TLS 1.3, server CertificateVerify";
+    context = kContext;
+  } else if (cert_verify_context == ssl_cert_verify_client) {
+    static const char kContext[] = "TLS 1.3, client CertificateVerify";
+    context = kContext;
+  } else if (cert_verify_context == ssl_cert_verify_channel_id) {
+    static const char kContext[] = "TLS 1.3, Channel ID";
+    context = kContext;
+  } else {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  // Note |context| includes the NUL byte separator.
+  if (!CBB_add_bytes(cbb.get(),
+                     reinterpret_cast<const uint8_t *>(context.data()),
+                     context.size())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len) ||
+      !CBB_add_bytes(cbb.get(), context_hash, context_hash_len) ||
+      !CBBFinishArray(cbb.get(), out)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_process_certificate(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                               bool allow_anonymous) {
+  SSL *const ssl = hs->ssl;
+  CBS body = msg.body;
+  bssl::UniquePtr<CRYPTO_BUFFER> decompressed;
+
+  if (msg.type == SSL3_MT_COMPRESSED_CERTIFICATE) {
+    CBS compressed;
+    uint16_t alg_id;
+    uint32_t uncompressed_len;
+
+    if (!CBS_get_u16(&body, &alg_id) ||
+        !CBS_get_u24(&body, &uncompressed_len) ||
+        !CBS_get_u24_length_prefixed(&body, &compressed) ||
+        CBS_len(&body) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    if (uncompressed_len > ssl->max_cert_list) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNCOMPRESSED_CERT_TOO_LARGE);
+      ERR_add_error_dataf("requested=%u",
+                          static_cast<unsigned>(uncompressed_len));
+      return false;
+    }
+
+    ssl_cert_decompression_func_t decompress = nullptr;
+    for (const auto &alg : ssl->ctx->cert_compression_algs) {
+      if (alg.alg_id == alg_id) {
+        decompress = alg.decompress;
+        break;
+      }
+    }
+
+    if (decompress == nullptr) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CERT_COMPRESSION_ALG);
+      ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id));
+      return false;
+    }
+
+    CRYPTO_BUFFER *decompressed_ptr = nullptr;
+    if (!decompress(ssl, &decompressed_ptr, uncompressed_len,
+                    CBS_data(&compressed), CBS_len(&compressed))) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED);
+      ERR_add_error_dataf("alg=%d", static_cast<int>(alg_id));
+      return false;
+    }
+    decompressed.reset(decompressed_ptr);
+
+    if (CRYPTO_BUFFER_len(decompressed_ptr) != uncompressed_len) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_DECOMPRESSION_FAILED);
+      ERR_add_error_dataf(
+          "alg=%d got=%u expected=%u", static_cast<int>(alg_id),
+          static_cast<unsigned>(CRYPTO_BUFFER_len(decompressed_ptr)),
+          static_cast<unsigned>(uncompressed_len));
+      return false;
+    }
+
+    CBS_init(&body, CRYPTO_BUFFER_data(decompressed_ptr),
+             CRYPTO_BUFFER_len(decompressed_ptr));
+  } else {
+    assert(msg.type == SSL3_MT_CERTIFICATE);
+  }
+
+  CBS context, certificate_list;
+  if (!CBS_get_u8_length_prefixed(&body, &context) ||
+      CBS_len(&context) != 0 ||
+      !CBS_get_u24_length_prefixed(&body, &certificate_list) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  UniquePtr<STACK_OF(CRYPTO_BUFFER)> certs(sk_CRYPTO_BUFFER_new_null());
+  if (!certs) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+    return false;
+  }
+
+  const bool retain_sha256 =
+      ssl->server && hs->config->retain_only_sha256_of_client_certs;
+  UniquePtr<EVP_PKEY> pkey;
+  while (CBS_len(&certificate_list) > 0) {
+    CBS certificate, extensions;
+    if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate) ||
+        !CBS_get_u16_length_prefixed(&certificate_list, &extensions) ||
+        CBS_len(&certificate) == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH);
+      return false;
+    }
+
+    if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) {
+      pkey = ssl_cert_parse_pubkey(&certificate);
+      if (!pkey) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+        return false;
+      }
+      // TLS 1.3 always uses certificate keys for signing thus the correct
+      // keyUsage is enforced.
+      if (!ssl_cert_check_key_usage(&certificate,
+                                    key_usage_digital_signature)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+        return false;
+      }
+
+      if (retain_sha256) {
+        // Retain the hash of the leaf certificate if requested.
+        SHA256(CBS_data(&certificate), CBS_len(&certificate),
+               hs->new_session->peer_sha256);
+      }
+    }
+
+    UniquePtr<CRYPTO_BUFFER> buf(
+        CRYPTO_BUFFER_new_from_CBS(&certificate, ssl->ctx->pool));
+    if (!buf ||
+        !PushToStack(certs.get(), std::move(buf))) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      return false;
+    }
+
+    // Parse out the extensions.
+    bool have_status_request = false, have_sct = false;
+    CBS status_request, sct;
+    const SSL_EXTENSION_TYPE ext_types[] = {
+        {TLSEXT_TYPE_status_request, &have_status_request, &status_request},
+        {TLSEXT_TYPE_certificate_timestamp, &have_sct, &sct},
+    };
+
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                              OPENSSL_ARRAY_SIZE(ext_types),
+                              0 /* reject unknown */)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return false;
+    }
+
+    // All Certificate extensions are parsed, but only the leaf extensions are
+    // stored.
+    if (have_status_request) {
+      if (ssl->server || !hs->config->ocsp_stapling_enabled) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+        return false;
+      }
+
+      uint8_t status_type;
+      CBS ocsp_response;
+      if (!CBS_get_u8(&status_request, &status_type) ||
+          status_type != TLSEXT_STATUSTYPE_ocsp ||
+          !CBS_get_u24_length_prefixed(&status_request, &ocsp_response) ||
+          CBS_len(&ocsp_response) == 0 ||
+          CBS_len(&status_request) != 0) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return false;
+      }
+
+      if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) {
+        hs->new_session->ocsp_response.reset(
+            CRYPTO_BUFFER_new_from_CBS(&ocsp_response, ssl->ctx->pool));
+        if (hs->new_session->ocsp_response == nullptr) {
+          ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+          return false;
+        }
+      }
+    }
+
+    if (have_sct) {
+      if (ssl->server || !hs->config->signed_cert_timestamps_enabled) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+        return false;
+      }
+
+      if (!ssl_is_sct_list_valid(&sct)) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_ERROR_PARSING_EXTENSION);
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+        return false;
+      }
+
+      if (sk_CRYPTO_BUFFER_num(certs.get()) == 1) {
+        hs->new_session->signed_cert_timestamp_list.reset(
+            CRYPTO_BUFFER_new_from_CBS(&sct, ssl->ctx->pool));
+        if (hs->new_session->signed_cert_timestamp_list == nullptr) {
+          ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+          return false;
+        }
+      }
+    }
+  }
+
+  // Store a null certificate list rather than an empty one if the peer didn't
+  // send certificates.
+  if (sk_CRYPTO_BUFFER_num(certs.get()) == 0) {
+    certs.reset();
+  }
+
+  hs->peer_pubkey = std::move(pkey);
+  hs->new_session->certs = std::move(certs);
+
+  if (!ssl->ctx->x509_method->session_cache_objects(hs->new_session.get())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    if (!allow_anonymous) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_CERTIFICATE_REQUIRED);
+      return false;
+    }
+
+    // OpenSSL returns X509_V_OK when no certificates are requested. This is
+    // classed by them as a bug, but it's assumed by at least NGINX.
+    hs->new_session->verify_result = X509_V_OK;
+
+    // No certificate, so nothing more to do.
+    return true;
+  }
+
+  hs->new_session->peer_sha256_valid = retain_sha256;
+  return true;
+}
+
+bool tls13_process_certificate_verify(SSL_HANDSHAKE *hs, const SSLMessage &msg) {
+  SSL *const ssl = hs->ssl;
+  if (hs->peer_pubkey == NULL) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  CBS body = msg.body, signature;
+  uint16_t signature_algorithm;
+  if (!CBS_get_u16(&body, &signature_algorithm) ||
+      !CBS_get_u16_length_prefixed(&body, &signature) ||
+      CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!tls12_check_peer_sigalg(ssl, &alert, signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+  hs->new_session->peer_signature_algorithm = signature_algorithm;
+
+  Array<uint8_t> input;
+  if (!tls13_get_cert_verify_signature_input(
+          hs, &input,
+          ssl->server ? ssl_cert_verify_client : ssl_cert_verify_server)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!ssl_public_key_verify(ssl, signature, signature_algorithm,
+                             hs->peer_pubkey.get(), input)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_SIGNATURE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_process_finished(SSL_HANDSHAKE *hs, const SSLMessage &msg,
+                            bool use_saved_value) {
+  SSL *const ssl = hs->ssl;
+  uint8_t verify_data_buf[EVP_MAX_MD_SIZE];
+  Span<const uint8_t> verify_data;
+  if (use_saved_value) {
+    assert(ssl->server);
+    verify_data = hs->expected_client_finished();
+  } else {
+    size_t len;
+    if (!tls13_finished_mac(hs, verify_data_buf, &len, !ssl->server)) {
+      return false;
+    }
+    verify_data = MakeConstSpan(verify_data_buf, len);
+  }
+
+  bool finished_ok =
+      CBS_mem_equal(&msg.body, verify_data.data(), verify_data.size());
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  finished_ok = true;
+#endif
+  if (!finished_ok) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_add_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  CERT *const cert = hs->config->cert.get();
+  DC *const dc = cert->dc.get();
+
+  ScopedCBB cbb;
+  CBB *body, body_storage, certificate_list;
+
+  if (hs->cert_compression_negotiated) {
+    if (!CBB_init(cbb.get(), 1024)) {
+      return false;
+    }
+    body = cbb.get();
+  } else {
+    body = &body_storage;
+    if (!ssl->method->init_message(ssl, cbb.get(), body, SSL3_MT_CERTIFICATE)) {
+      return false;
+    }
+  }
+
+  if (// The request context is always empty in the handshake.
+      !CBB_add_u8(body, 0) ||
+      !CBB_add_u24_length_prefixed(body, &certificate_list)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (!ssl_has_certificate(hs)) {
+    return ssl_add_message_cbb(ssl, cbb.get());
+  }
+
+  CRYPTO_BUFFER *leaf_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), 0);
+  CBB leaf, extensions;
+  if (!CBB_add_u24_length_prefixed(&certificate_list, &leaf) ||
+      !CBB_add_bytes(&leaf, CRYPTO_BUFFER_data(leaf_buf),
+                     CRYPTO_BUFFER_len(leaf_buf)) ||
+      !CBB_add_u16_length_prefixed(&certificate_list, &extensions)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (hs->scts_requested && cert->signed_cert_timestamp_list != nullptr) {
+    CBB contents;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_certificate_timestamp) ||
+        !CBB_add_u16_length_prefixed(&extensions, &contents) ||
+        !CBB_add_bytes(
+            &contents,
+            CRYPTO_BUFFER_data(cert->signed_cert_timestamp_list.get()),
+            CRYPTO_BUFFER_len(cert->signed_cert_timestamp_list.get())) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (hs->ocsp_stapling_requested && cert->ocsp_response != NULL) {
+    CBB contents, ocsp_response;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_status_request) ||
+        !CBB_add_u16_length_prefixed(&extensions, &contents) ||
+        !CBB_add_u8(&contents, TLSEXT_STATUSTYPE_ocsp) ||
+        !CBB_add_u24_length_prefixed(&contents, &ocsp_response) ||
+        !CBB_add_bytes(&ocsp_response,
+                       CRYPTO_BUFFER_data(cert->ocsp_response.get()),
+                       CRYPTO_BUFFER_len(cert->ocsp_response.get())) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (ssl_signing_with_dc(hs)) {
+    const CRYPTO_BUFFER *raw = dc->raw.get();
+    CBB child;
+    if (!CBB_add_u16(&extensions, TLSEXT_TYPE_delegated_credential) ||
+        !CBB_add_u16_length_prefixed(&extensions, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(raw),
+                       CRYPTO_BUFFER_len(raw)) ||
+        !CBB_flush(&extensions)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return 0;
+    }
+    ssl->s3->delegated_credential_used = true;
+  }
+
+  for (size_t i = 1; i < sk_CRYPTO_BUFFER_num(cert->chain.get()); i++) {
+    CRYPTO_BUFFER *cert_buf = sk_CRYPTO_BUFFER_value(cert->chain.get(), i);
+    CBB child;
+    if (!CBB_add_u24_length_prefixed(&certificate_list, &child) ||
+        !CBB_add_bytes(&child, CRYPTO_BUFFER_data(cert_buf),
+                       CRYPTO_BUFFER_len(cert_buf)) ||
+        !CBB_add_u16(&certificate_list, 0 /* no extensions */)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return false;
+    }
+  }
+
+  if (!hs->cert_compression_negotiated) {
+    return ssl_add_message_cbb(ssl, cbb.get());
+  }
+
+  Array<uint8_t> msg;
+  if (!CBBFinishArray(cbb.get(), &msg)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  const CertCompressionAlg *alg = nullptr;
+  for (const auto &candidate : ssl->ctx->cert_compression_algs) {
+    if (candidate.alg_id == hs->cert_compression_alg_id) {
+      alg = &candidate;
+      break;
+    }
+  }
+
+  if (alg == nullptr || alg->compress == nullptr) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  CBB compressed;
+  body = &body_storage;
+  if (!ssl->method->init_message(ssl, cbb.get(), body,
+                                 SSL3_MT_COMPRESSED_CERTIFICATE) ||
+      !CBB_add_u16(body, hs->cert_compression_alg_id) ||
+      !CBB_add_u24(body, msg.size()) ||
+      !CBB_add_u24_length_prefixed(body, &compressed) ||
+      !alg->compress(ssl, &compressed, msg.data(), msg.size()) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  return true;
+}
+
+enum ssl_private_key_result_t tls13_add_certificate_verify(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  uint16_t signature_algorithm;
+  if (!tls1_choose_signature_algorithm(hs, &signature_algorithm)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_private_key_failure;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_CERTIFICATE_VERIFY) ||
+      !CBB_add_u16(&body, signature_algorithm)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  // Sign the digest.
+  CBB child;
+  const size_t max_sig_len = EVP_PKEY_size(hs->local_pubkey.get());
+  uint8_t *sig;
+  size_t sig_len;
+  if (!CBB_add_u16_length_prefixed(&body, &child) ||
+      !CBB_reserve(&child, &sig, max_sig_len)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  Array<uint8_t> msg;
+  if (!tls13_get_cert_verify_signature_input(
+          hs, &msg,
+          ssl->server ? ssl_cert_verify_server : ssl_cert_verify_client)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_private_key_failure;
+  }
+
+  enum ssl_private_key_result_t sign_result = ssl_private_key_sign(
+      hs, sig, &sig_len, max_sig_len, signature_algorithm, msg);
+  if (sign_result != ssl_private_key_success) {
+    return sign_result;
+  }
+
+  if (!CBB_did_write(&child, sig_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_private_key_failure;
+  }
+
+  return ssl_private_key_success;
+}
+
+bool tls13_add_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  size_t verify_data_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+
+  if (!tls13_finished_mac(hs, verify_data, &verify_data_len, ssl->server)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  ScopedCBB cbb;
+  CBB body;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_FINISHED) ||
+      !CBB_add_bytes(&body, verify_data, verify_data_len) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_add_key_update(SSL *ssl, int update_requested) {
+  ScopedCBB cbb;
+  CBB body_cbb;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body_cbb,
+                                 SSL3_MT_KEY_UPDATE) ||
+      !CBB_add_u8(&body_cbb, update_requested) ||
+      !ssl_add_message_cbb(ssl, cbb.get()) ||
+      !tls13_rotate_traffic_key(ssl, evp_aead_seal)) {
+    return false;
+  }
+
+  // Suppress KeyUpdate acknowledgments until this change is written to the
+  // wire. This prevents us from accumulating write obligations when read and
+  // write progress at different rates. See RFC 8446, section 4.6.3.
+  ssl->s3->key_update_pending = true;
+
+  return true;
+}
+
+static bool tls13_receive_key_update(SSL *ssl, const SSLMessage &msg) {
+  CBS body = msg.body;
+  uint8_t key_update_request;
+  if (!CBS_get_u8(&body, &key_update_request) ||
+      CBS_len(&body) != 0 ||
+      (key_update_request != SSL_KEY_UPDATE_NOT_REQUESTED &&
+       key_update_request != SSL_KEY_UPDATE_REQUESTED)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return false;
+  }
+
+  if (!tls13_rotate_traffic_key(ssl, evp_aead_open)) {
+    return false;
+  }
+
+  // Acknowledge the KeyUpdate
+  if (key_update_request == SSL_KEY_UPDATE_REQUESTED &&
+      !ssl->s3->key_update_pending &&
+      !tls13_add_key_update(ssl, SSL_KEY_UPDATE_NOT_REQUESTED)) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_post_handshake(SSL *ssl, const SSLMessage &msg) {
+  if (msg.type == SSL3_MT_KEY_UPDATE) {
+    ssl->s3->key_update_count++;
+    if (ssl->quic_method != nullptr ||
+        ssl->s3->key_update_count > kMaxKeyUpdates) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_KEY_UPDATES);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+      return false;
+    }
+
+    return tls13_receive_key_update(ssl, msg);
+  }
+
+  ssl->s3->key_update_count = 0;
+
+  if (msg.type == SSL3_MT_NEW_SESSION_TICKET && !ssl->server) {
+    return tls13_process_new_session_ticket(ssl, msg);
+  }
+
+  ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+  return false;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc
new file mode 100644
index 0000000..b1e0de2
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc	
@@ -0,0 +1,946 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/stack.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+enum client_hs_state_t {
+  state_read_hello_retry_request = 0,
+  state_send_second_client_hello,
+  state_read_server_hello,
+  state_read_encrypted_extensions,
+  state_read_certificate_request,
+  state_read_server_certificate,
+  state_read_server_certificate_verify,
+  state_server_certificate_reverify,
+  state_read_server_finished,
+  state_send_end_of_early_data,
+  state_send_client_certificate,
+  state_send_client_certificate_verify,
+  state_complete_second_flight,
+  state_done,
+};
+
+static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
+
+static enum ssl_hs_wait_t do_read_hello_retry_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->s3->have_version);
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // Queue up a ChangeCipherSpec for whenever we next send something. This
+  // will be before the second ClientHello. If we offered early data, this was
+  // already done.
+  if (!hs->early_data_offered &&
+      !ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body, extensions, server_random, session_id;
+  uint16_t server_version, cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&body, &server_version) ||
+      !CBS_get_bytes(&body, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&body, &session_id) ||
+      !CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBS_get_u16(&body, &cipher_suite) ||
+      !CBS_get_u8(&body, &compression_method) ||
+      compression_method != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&extensions) == 0 ||
+      CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!CBS_mem_equal(&server_random, kHelloRetryRequest, SSL3_RANDOM_SIZE)) {
+    hs->tls13_state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  // Check if the cipher is a TLS 1.3 cipher.
+  if (cipher == NULL ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  hs->new_cipher = cipher;
+
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !hs->transcript.UpdateForHelloRetryRequest()) {
+    return ssl_hs_error;
+  }
+
+
+  bool have_cookie, have_key_share, have_supported_versions;
+  CBS cookie, key_share, supported_versions;
+  SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_key_share, &have_key_share, &key_share},
+      {TLSEXT_TYPE_cookie, &have_cookie, &cookie},
+      {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+       &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            0 /* reject unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (!have_cookie && !have_key_share) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EMPTY_HELLO_RETRY_REQUEST);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+  if (have_cookie) {
+    CBS cookie_value;
+    if (!CBS_get_u16_length_prefixed(&cookie, &cookie_value) ||
+        CBS_len(&cookie_value) == 0 ||
+        CBS_len(&cookie) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (!hs->cookie.CopyFrom(cookie_value)) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (have_key_share) {
+    uint16_t group_id;
+    if (!CBS_get_u16(&key_share, &group_id) || CBS_len(&key_share) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // The group must be supported.
+    if (!tls1_check_group_id(hs, group_id)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return ssl_hs_error;
+    }
+
+    // Check that the HelloRetryRequest does not request a key share that was
+    // provided in the initial ClientHello.
+    if (hs->key_shares[0]->GroupID() == group_id ||
+        (hs->key_shares[1] && hs->key_shares[1]->GroupID() == group_id)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return ssl_hs_error;
+    }
+
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+    hs->retry_group = group_id;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  ssl->s3->used_hello_retry_request = true;
+  hs->tls13_state = state_send_second_client_hello;
+  // 0-RTT is rejected if we receive a HelloRetryRequest.
+  if (hs->in_early_data) {
+    ssl->s3->early_data_reason = ssl_early_data_hello_retry_request;
+    return ssl_hs_early_data_rejected;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_second_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // Restore the null cipher. We may have switched due to 0-RTT.
+  bssl::UniquePtr<SSLAEADContext> null_ctx =
+      SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  if (!null_ctx ||
+      !ssl->method->set_write_state(ssl, std::move(null_ctx))) {
+    return ssl_hs_error;
+  }
+
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_read_server_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body, server_random, session_id, extensions;
+  uint16_t server_version;
+  uint16_t cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&body, &server_version) ||
+      !CBS_get_bytes(&body, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&body, &session_id) ||
+      !CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBS_get_u16(&body, &cipher_suite) ||
+      !CBS_get_u8(&body, &compression_method) ||
+      compression_method != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (server_version != TLS1_2_VERSION) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_NUMBER);
+    return ssl_hs_error;
+  }
+
+  // Forbid a second HelloRetryRequest.
+  if (CBS_mem_equal(&server_random, kHelloRetryRequest, SSL3_RANDOM_SIZE)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(ssl->s3->server_random, CBS_data(&server_random),
+                 SSL3_RANDOM_SIZE);
+
+  // Check if the cipher is a TLS 1.3 cipher.
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  if (cipher == nullptr ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // Check that the cipher matches the one in the HelloRetryRequest.
+  if (ssl->s3->used_hello_retry_request && hs->new_cipher != cipher) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // Parse out the extensions.
+  bool have_key_share = false, have_pre_shared_key = false,
+       have_supported_versions = false;
+  CBS key_share, pre_shared_key, supported_versions;
+  SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_key_share, &have_key_share, &key_share},
+      {TLSEXT_TYPE_pre_shared_key, &have_pre_shared_key, &pre_shared_key},
+      {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+       &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            0 /* reject unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Recheck supported_versions, in case this is the second ServerHello.
+  uint16_t version;
+  if (!have_supported_versions ||
+      !CBS_get_u16(&supported_versions, &version) ||
+      version != ssl->version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SECOND_SERVERHELLO_VERSION_MISMATCH);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  alert = SSL_AD_DECODE_ERROR;
+  if (have_pre_shared_key) {
+    if (ssl->session == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_ext_pre_shared_key_parse_serverhello(hs, &alert,
+                                                  &pre_shared_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    if (ssl->session->ssl_version != ssl->version) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_VERSION_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    if (ssl->session->cipher->algorithm_prf != cipher->algorithm_prf) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_PRF_HASH_MISMATCH);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_session_is_context_valid(hs, ssl->session.get())) {
+      // This is actually a client application bug.
+      OPENSSL_PUT_ERROR(SSL,
+                        SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    ssl->s3->session_reused = true;
+    // Only authentication information carries over in TLS 1.3.
+    hs->new_session =
+        SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_DUP_AUTH_ONLY);
+    if (!hs->new_session) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    ssl_set_session(ssl, NULL);
+
+    // Resumption incorporates fresh key material, so refresh the timeout.
+    ssl_session_renew_timeout(ssl, hs->new_session.get(),
+                              ssl->session_ctx->session_psk_dhe_timeout);
+  } else if (!ssl_get_new_session(hs, 0)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->new_session->cipher = cipher;
+  hs->new_cipher = cipher;
+
+  size_t hash_len =
+      EVP_MD_size(ssl_get_handshake_digest(ssl_protocol_version(ssl), cipher));
+
+  // Set up the key schedule and incorporate the PSK into the running secret.
+  if (ssl->s3->session_reused) {
+    if (!tls13_init_key_schedule(
+            hs, MakeConstSpan(hs->new_session->master_key,
+                              hs->new_session->master_key_length))) {
+      return ssl_hs_error;
+    }
+  } else if (!tls13_init_key_schedule(hs, MakeConstSpan(kZeroes, hash_len))) {
+    return ssl_hs_error;
+  }
+
+  if (!have_key_share) {
+    // We do not support psk_ke and thus always require a key share.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
+    return ssl_hs_error;
+  }
+
+  // Resolve ECDHE and incorporate it into the secret.
+  Array<uint8_t> dhe_secret;
+  alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_ext_key_share_parse_serverhello(hs, &dhe_secret, &alert,
+                                           &key_share)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (!tls13_advance_key_schedule(hs, dhe_secret) ||
+      !ssl_hash_message(hs, msg) ||
+      !tls13_derive_handshake_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                             hs->server_handshake_secret())) {
+    return ssl_hs_error;
+  }
+
+  if (!hs->early_data_offered) {
+    // If not sending early data, set client traffic keys now so that alerts are
+    // encrypted.
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_encrypted_extensions;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_encrypted_extensions(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_ENCRYPTED_EXTENSIONS)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body;
+  if (!ssl_parse_serverhello_tlsext(hs, &body)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+  if (CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Store the negotiated ALPN in the session.
+  if (!hs->new_session->early_alpn.CopyFrom(ssl->s3->alpn_selected)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    if (hs->early_session->cipher != hs->new_session->cipher ||
+        MakeConstSpan(hs->early_session->early_alpn) !=
+            ssl->s3->alpn_selected) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ALPN_MISMATCH_ON_EARLY_DATA);
+      return ssl_hs_error;
+    }
+    if (ssl->s3->channel_id_valid || ssl->s3->token_binding_negotiated) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION_ON_EARLY_DATA);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_certificate_request;
+  if (hs->in_early_data && !ssl->s3->early_data_accepted) {
+    return ssl_hs_early_data_rejected;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // CertificateRequest may only be sent in non-resumption handshakes.
+  if (ssl->s3->session_reused) {
+    if (ssl->ctx->reverify_on_resume && !ssl->s3->early_data_accepted) {
+      hs->tls13_state = state_server_certificate_reverify;
+      return ssl_hs_ok;
+    }
+    hs->tls13_state = state_read_server_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // CertificateRequest is optional.
+  if (msg.type != SSL3_MT_CERTIFICATE_REQUEST) {
+    hs->tls13_state = state_read_server_certificate;
+    return ssl_hs_ok;
+  }
+
+
+  bool have_sigalgs = false, have_ca = false;
+  CBS sigalgs, ca;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+    {TLSEXT_TYPE_signature_algorithms, &have_sigalgs, &sigalgs},
+    {TLSEXT_TYPE_certificate_authorities, &have_ca, &ca},
+  };
+
+  CBS body = msg.body, context, extensions, supported_signature_algorithms;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!CBS_get_u8_length_prefixed(&body, &context) ||
+      // The request context is always empty during the handshake.
+      CBS_len(&context) != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0 ||
+      !ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* accept unknown */) ||
+      (have_ca && CBS_len(&ca) == 0) ||
+      !have_sigalgs ||
+      !CBS_get_u16_length_prefixed(&sigalgs,
+                                   &supported_signature_algorithms) ||
+      !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (have_ca) {
+    hs->ca_names = ssl_parse_client_CA_list(ssl, &alert, &ca);
+    if (!hs->ca_names) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+  } else {
+    hs->ca_names.reset(sk_CRYPTO_BUFFER_new_null());
+    if (!hs->ca_names) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  hs->cert_request = true;
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(hs);
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_COMPRESSED_CERTIFICATE &&
+      !ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE)) {
+    return ssl_hs_error;
+  }
+
+  if (!tls13_process_certificate(hs, msg, false /* certificate required */) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate_verify(
+    SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state_read_server_certificate_verify;
+      return ssl_hs_certificate_verify;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY) ||
+      !tls13_process_certificate_verify(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_server_certificate_reverify(
+    SSL_HANDSHAKE *hs) {
+  switch (ssl_reverify_peer_cert(hs, /*send_alert=*/true)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state_server_certificate_reverify;
+      return ssl_hs_certificate_verify;
+  }
+  hs->tls13_state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED) ||
+      !tls13_process_finished(hs, msg, false /* don't use saved value */) ||
+      !ssl_hash_message(hs, msg) ||
+      // Update the secret to the master secret and derive traffic keys.
+      !tls13_advance_key_schedule(
+          hs, MakeConstSpan(kZeroes, hs->transcript.DigestLen())) ||
+      !tls13_derive_application_secrets(hs)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_send_end_of_early_data;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_end_of_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (ssl->s3->early_data_accepted) {
+    hs->can_early_write = false;
+    // QUIC omits the EndOfEarlyData message. See draft-ietf-quic-tls-22,
+    // section 8.3.
+    if (ssl->quic_method == nullptr) {
+      ScopedCBB cbb;
+      CBB body;
+      if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                     SSL3_MT_END_OF_EARLY_DATA) ||
+          !ssl_add_message_cbb(ssl, cbb.get())) {
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  if (hs->early_data_offered) {
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->tls13_state = state_send_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // The peer didn't request a certificate.
+  if (!hs->cert_request) {
+    hs->tls13_state = state_complete_second_flight;
+    return ssl_hs_ok;
+  }
+
+  // Call cert_cb to update the certificate.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      hs->tls13_state = state_send_client_certificate;
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_on_certificate_selected(hs) ||
+      !tls13_add_certificate(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_send_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  // Don't send CertificateVerify if there is no certificate.
+  if (!ssl_has_certificate(hs)) {
+    hs->tls13_state = state_complete_second_flight;
+    return ssl_hs_ok;
+  }
+
+  switch (tls13_add_certificate_verify(hs)) {
+    case ssl_private_key_success:
+      hs->tls13_state = state_complete_second_flight;
+      return ssl_hs_ok;
+
+    case ssl_private_key_retry:
+      hs->tls13_state = state_send_client_certificate_verify;
+      return ssl_hs_private_key_operation;
+
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+  }
+
+  assert(0);
+  return ssl_hs_error;
+}
+
+static enum ssl_hs_wait_t do_complete_second_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Send a Channel ID assertion if necessary.
+  if (ssl->s3->channel_id_valid) {
+    if (!ssl_do_channel_id_callback(hs)) {
+      hs->tls13_state = state_complete_second_flight;
+      return ssl_hs_error;
+    }
+
+    if (hs->config->channel_id_private == NULL) {
+      return ssl_hs_channel_id_lookup;
+    }
+
+    ScopedCBB cbb;
+    CBB body;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CHANNEL_ID) ||
+        !tls1_write_channel_id(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Send a Finished message.
+  if (!tls13_add_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  // Derive the final keys and enable them.
+  if (!tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_open,
+                             hs->server_traffic_secret_0()) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                             hs->client_traffic_secret_0()) ||
+      !tls13_derive_resumption_secret(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_done;
+  return ssl_hs_flush;
+}
+
+enum ssl_hs_wait_t tls13_client_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->tls13_state != state_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum client_hs_state_t state =
+        static_cast<enum client_hs_state_t>(hs->tls13_state);
+    switch (state) {
+      case state_read_hello_retry_request:
+        ret = do_read_hello_retry_request(hs);
+        break;
+      case state_send_second_client_hello:
+        ret = do_send_second_client_hello(hs);
+        break;
+      case state_read_server_hello:
+        ret = do_read_server_hello(hs);
+        break;
+      case state_read_encrypted_extensions:
+        ret = do_read_encrypted_extensions(hs);
+        break;
+      case state_read_certificate_request:
+        ret = do_read_certificate_request(hs);
+        break;
+      case state_read_server_certificate:
+        ret = do_read_server_certificate(hs);
+        break;
+      case state_read_server_certificate_verify:
+        ret = do_read_server_certificate_verify(hs);
+        break;
+      case state_server_certificate_reverify:
+        ret = do_server_certificate_reverify(hs);
+        break;
+      case state_read_server_finished:
+        ret = do_read_server_finished(hs);
+        break;
+      case state_send_end_of_early_data:
+        ret = do_send_end_of_early_data(hs);
+        break;
+      case state_send_client_certificate:
+        ret = do_send_client_certificate(hs);
+        break;
+      case state_send_client_certificate_verify:
+        ret = do_send_client_certificate_verify(hs);
+        break;
+      case state_complete_second_flight:
+        ret = do_complete_second_flight(hs);
+        break;
+      case state_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->tls13_state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_CONNECT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  return ssl_hs_ok;
+}
+
+const char *tls13_client_handshake_state(SSL_HANDSHAKE *hs) {
+  enum client_hs_state_t state =
+      static_cast<enum client_hs_state_t>(hs->tls13_state);
+  switch (state) {
+    case state_read_hello_retry_request:
+      return "TLS 1.3 client read_hello_retry_request";
+    case state_send_second_client_hello:
+      return "TLS 1.3 client send_second_client_hello";
+    case state_read_server_hello:
+      return "TLS 1.3 client read_server_hello";
+    case state_read_encrypted_extensions:
+      return "TLS 1.3 client read_encrypted_extensions";
+    case state_read_certificate_request:
+      return "TLS 1.3 client read_certificate_request";
+    case state_read_server_certificate:
+      return "TLS 1.3 client read_server_certificate";
+    case state_read_server_certificate_verify:
+      return "TLS 1.3 client read_server_certificate_verify";
+    case state_server_certificate_reverify:
+      return "TLS 1.3 client server_certificate_reverify";
+    case state_read_server_finished:
+      return "TLS 1.3 client read_server_finished";
+    case state_send_end_of_early_data:
+      return "TLS 1.3 client send_end_of_early_data";
+    case state_send_client_certificate:
+      return "TLS 1.3 client send_client_certificate";
+    case state_send_client_certificate_verify:
+      return "TLS 1.3 client send_client_certificate_verify";
+    case state_complete_second_flight:
+      return "TLS 1.3 client complete_second_flight";
+    case state_done:
+      return "TLS 1.3 client done";
+  }
+
+  return "TLS 1.3 client unknown";
+}
+
+bool tls13_process_new_session_ticket(SSL *ssl, const SSLMessage &msg) {
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    // Ignore tickets on shutdown. Callers tend to indiscriminately call
+    // |SSL_shutdown| before destroying an |SSL|, at which point calling the new
+    // session callback may be confusing.
+    return true;
+  }
+
+  UniquePtr<SSL_SESSION> session = SSL_SESSION_dup(
+      ssl->s3->established_session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+  if (!session) {
+    return false;
+  }
+
+  ssl_session_rebase_time(ssl, session.get());
+
+  uint32_t server_timeout;
+  CBS body = msg.body, ticket_nonce, ticket, extensions;
+  if (!CBS_get_u32(&body, &server_timeout) ||
+      !CBS_get_u32(&body, &session->ticket_age_add) ||
+      !CBS_get_u8_length_prefixed(&body, &ticket_nonce) ||
+      !CBS_get_u16_length_prefixed(&body, &ticket) ||
+      !session->ticket.CopyFrom(ticket) ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  // Cap the renewable lifetime by the server advertised value. This avoids
+  // wasting bandwidth on 0-RTT when we know the server will reject it.
+  if (session->timeout > server_timeout) {
+    session->timeout = server_timeout;
+  }
+
+  if (!tls13_derive_session_psk(session.get(), ticket_nonce)) {
+    return false;
+  }
+
+  // Parse out the extensions.
+  bool have_early_data = false;
+  CBS early_data;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_early_data, &have_early_data, &early_data},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* ignore unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  if (have_early_data) {
+    if (!CBS_get_u32(&early_data, &session->ticket_max_early_data) ||
+        CBS_len(&early_data) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    // QUIC does not use the max_early_data_size parameter and always sets it to
+    // a fixed value. See draft-ietf-quic-tls-22, section 4.5.
+    if (ssl->quic_method != nullptr &&
+        session->ticket_max_early_data != 0xffffffff) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+  }
+
+  // Generate a session ID for this session. Some callers expect all sessions to
+  // have a session ID.
+  SHA256(CBS_data(&ticket), CBS_len(&ticket), session->session_id);
+  session->session_id_length = SHA256_DIGEST_LENGTH;
+
+  session->ticket_age_add_valid = true;
+  session->not_resumable = false;
+
+  if ((ssl->session_ctx->session_cache_mode & SSL_SESS_CACHE_CLIENT) &&
+      ssl->session_ctx->new_session_cb != NULL &&
+      ssl->session_ctx->new_session_cb(ssl, session.get())) {
+    // |new_session_cb|'s return value signals that it took ownership.
+    session.release();
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc.grpc_back
new file mode 100644
index 0000000..8bb3339
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_client.cc.grpc_back	
@@ -0,0 +1,946 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <utility>
+
+#include <openssl/bytestring.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/sha.h>
+#include <openssl/stack.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+enum client_hs_state_t {
+  state_read_hello_retry_request = 0,
+  state_send_second_client_hello,
+  state_read_server_hello,
+  state_read_encrypted_extensions,
+  state_read_certificate_request,
+  state_read_server_certificate,
+  state_read_server_certificate_verify,
+  state_server_certificate_reverify,
+  state_read_server_finished,
+  state_send_end_of_early_data,
+  state_send_client_certificate,
+  state_send_client_certificate_verify,
+  state_complete_second_flight,
+  state_done,
+};
+
+static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
+
+static enum ssl_hs_wait_t do_read_hello_retry_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  assert(ssl->s3->have_version);
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // Queue up a ChangeCipherSpec for whenever we next send something. This
+  // will be before the second ClientHello. If we offered early data, this was
+  // already done.
+  if (!hs->early_data_offered &&
+      !ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body, extensions, server_random, session_id;
+  uint16_t server_version, cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&body, &server_version) ||
+      !CBS_get_bytes(&body, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&body, &session_id) ||
+      !CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBS_get_u16(&body, &cipher_suite) ||
+      !CBS_get_u8(&body, &compression_method) ||
+      compression_method != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&extensions) == 0 ||
+      CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (!CBS_mem_equal(&server_random, kHelloRetryRequest, SSL3_RANDOM_SIZE)) {
+    hs->tls13_state = state_read_server_hello;
+    return ssl_hs_ok;
+  }
+
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  // Check if the cipher is a TLS 1.3 cipher.
+  if (cipher == NULL ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  hs->new_cipher = cipher;
+
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher) ||
+      !hs->transcript.UpdateForHelloRetryRequest()) {
+    return ssl_hs_error;
+  }
+
+
+  bool have_cookie, have_key_share, have_supported_versions;
+  CBS cookie, key_share, supported_versions;
+  SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_key_share, &have_key_share, &key_share},
+      {TLSEXT_TYPE_cookie, &have_cookie, &cookie},
+      {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+       &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            0 /* reject unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (!have_cookie && !have_key_share) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_EMPTY_HELLO_RETRY_REQUEST);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+  if (have_cookie) {
+    CBS cookie_value;
+    if (!CBS_get_u16_length_prefixed(&cookie, &cookie_value) ||
+        CBS_len(&cookie_value) == 0 ||
+        CBS_len(&cookie) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    if (!hs->cookie.CopyFrom(cookie_value)) {
+      return ssl_hs_error;
+    }
+  }
+
+  if (have_key_share) {
+    uint16_t group_id;
+    if (!CBS_get_u16(&key_share, &group_id) || CBS_len(&key_share) != 0) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+
+    // The group must be supported.
+    if (!tls1_check_group_id(hs, group_id)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return ssl_hs_error;
+    }
+
+    // Check that the HelloRetryRequest does not request a key share that was
+    // provided in the initial ClientHello.
+    if (hs->key_shares[0]->GroupID() == group_id ||
+        (hs->key_shares[1] && hs->key_shares[1]->GroupID() == group_id)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+      return ssl_hs_error;
+    }
+
+    hs->key_shares[0].reset();
+    hs->key_shares[1].reset();
+    hs->retry_group = group_id;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  ssl->s3->used_hello_retry_request = true;
+  hs->tls13_state = state_send_second_client_hello;
+  // 0-RTT is rejected if we receive a HelloRetryRequest.
+  if (hs->in_early_data) {
+    ssl->s3->early_data_reason = ssl_early_data_hello_retry_request;
+    return ssl_hs_early_data_rejected;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_second_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // Restore the null cipher. We may have switched due to 0-RTT.
+  bssl::UniquePtr<SSLAEADContext> null_ctx =
+      SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
+  if (!null_ctx ||
+      !ssl->method->set_write_state(ssl, std::move(null_ctx))) {
+    return ssl_hs_error;
+  }
+
+  ssl->s3->aead_write_ctx->SetVersionIfNullCipher(ssl->version);
+
+  if (!ssl_write_client_hello(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_read_server_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_SERVER_HELLO)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body, server_random, session_id, extensions;
+  uint16_t server_version;
+  uint16_t cipher_suite;
+  uint8_t compression_method;
+  if (!CBS_get_u16(&body, &server_version) ||
+      !CBS_get_bytes(&body, &server_random, SSL3_RANDOM_SIZE) ||
+      !CBS_get_u8_length_prefixed(&body, &session_id) ||
+      !CBS_mem_equal(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBS_get_u16(&body, &cipher_suite) ||
+      !CBS_get_u8(&body, &compression_method) ||
+      compression_method != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (server_version != TLS1_2_VERSION) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_NUMBER);
+    return ssl_hs_error;
+  }
+
+  // Forbid a second HelloRetryRequest.
+  if (CBS_mem_equal(&server_random, kHelloRetryRequest, SSL3_RANDOM_SIZE)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_MESSAGE);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(ssl->s3->server_random, CBS_data(&server_random),
+                 SSL3_RANDOM_SIZE);
+
+  // Check if the cipher is a TLS 1.3 cipher.
+  const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
+  if (cipher == nullptr ||
+      SSL_CIPHER_get_min_version(cipher) > ssl_protocol_version(ssl) ||
+      SSL_CIPHER_get_max_version(cipher) < ssl_protocol_version(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // Check that the cipher matches the one in the HelloRetryRequest.
+  if (ssl->s3->used_hello_retry_request && hs->new_cipher != cipher) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  // Parse out the extensions.
+  bool have_key_share = false, have_pre_shared_key = false,
+       have_supported_versions = false;
+  CBS key_share, pre_shared_key, supported_versions;
+  SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_key_share, &have_key_share, &key_share},
+      {TLSEXT_TYPE_pre_shared_key, &have_pre_shared_key, &pre_shared_key},
+      {TLSEXT_TYPE_supported_versions, &have_supported_versions,
+       &supported_versions},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            0 /* reject unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // Recheck supported_versions, in case this is the second ServerHello.
+  uint16_t version;
+  if (!have_supported_versions ||
+      !CBS_get_u16(&supported_versions, &version) ||
+      version != ssl->version) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_SECOND_SERVERHELLO_VERSION_MISMATCH);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+    return ssl_hs_error;
+  }
+
+  alert = SSL_AD_DECODE_ERROR;
+  if (have_pre_shared_key) {
+    if (ssl->session == NULL) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_ext_pre_shared_key_parse_serverhello(hs, &alert,
+                                                  &pre_shared_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    if (ssl->session->ssl_version != ssl->version) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_VERSION_NOT_RETURNED);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    if (ssl->session->cipher->algorithm_prf != cipher->algorithm_prf) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_OLD_SESSION_PRF_HASH_MISMATCH);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    if (!ssl_session_is_context_valid(hs, ssl->session.get())) {
+      // This is actually a client application bug.
+      OPENSSL_PUT_ERROR(SSL,
+                        SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    ssl->s3->session_reused = true;
+    // Only authentication information carries over in TLS 1.3.
+    hs->new_session =
+        SSL_SESSION_dup(ssl->session.get(), SSL_SESSION_DUP_AUTH_ONLY);
+    if (!hs->new_session) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+    ssl_set_session(ssl, NULL);
+
+    // Resumption incorporates fresh key material, so refresh the timeout.
+    ssl_session_renew_timeout(ssl, hs->new_session.get(),
+                              ssl->session_ctx->session_psk_dhe_timeout);
+  } else if (!ssl_get_new_session(hs, 0)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  hs->new_session->cipher = cipher;
+  hs->new_cipher = cipher;
+
+  size_t hash_len =
+      EVP_MD_size(ssl_get_handshake_digest(ssl_protocol_version(ssl), cipher));
+
+  // Set up the key schedule and incorporate the PSK into the running secret.
+  if (ssl->s3->session_reused) {
+    if (!tls13_init_key_schedule(
+            hs, MakeConstSpan(hs->new_session->master_key,
+                              hs->new_session->master_key_length))) {
+      return ssl_hs_error;
+    }
+  } else if (!tls13_init_key_schedule(hs, MakeConstSpan(kZeroes, hash_len))) {
+    return ssl_hs_error;
+  }
+
+  if (!have_key_share) {
+    // We do not support psk_ke and thus always require a key share.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
+    return ssl_hs_error;
+  }
+
+  // Resolve ECDHE and incorporate it into the secret.
+  Array<uint8_t> dhe_secret;
+  alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_ext_key_share_parse_serverhello(hs, &dhe_secret, &alert,
+                                           &key_share)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  if (!tls13_advance_key_schedule(hs, dhe_secret) ||
+      !ssl_hash_message(hs, msg) ||
+      !tls13_derive_handshake_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                             hs->server_handshake_secret())) {
+    return ssl_hs_error;
+  }
+
+  if (!hs->early_data_offered) {
+    // If not sending early data, set client traffic keys now so that alerts are
+    // encrypted.
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_encrypted_extensions;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_encrypted_extensions(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_ENCRYPTED_EXTENSIONS)) {
+    return ssl_hs_error;
+  }
+
+  CBS body = msg.body;
+  if (!ssl_parse_serverhello_tlsext(hs, &body)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
+    return ssl_hs_error;
+  }
+  if (CBS_len(&body) != 0) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // Store the negotiated ALPN in the session.
+  if (!hs->new_session->early_alpn.CopyFrom(ssl->s3->alpn_selected)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    if (hs->early_session->cipher != hs->new_session->cipher ||
+        MakeConstSpan(hs->early_session->early_alpn) !=
+            ssl->s3->alpn_selected) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_ALPN_MISMATCH_ON_EARLY_DATA);
+      return ssl_hs_error;
+    }
+    if (ssl->s3->channel_id_valid || ssl->s3->token_binding_negotiated) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION_ON_EARLY_DATA);
+      return ssl_hs_error;
+    }
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_certificate_request;
+  if (hs->in_early_data && !ssl->s3->early_data_accepted) {
+    return ssl_hs_early_data_rejected;
+  }
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_certificate_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // CertificateRequest may only be sent in non-resumption handshakes.
+  if (ssl->s3->session_reused) {
+    if (ssl->ctx->reverify_on_resume && !ssl->s3->early_data_accepted) {
+      hs->tls13_state = state_server_certificate_reverify;
+      return ssl_hs_ok;
+    }
+    hs->tls13_state = state_read_server_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  // CertificateRequest is optional.
+  if (msg.type != SSL3_MT_CERTIFICATE_REQUEST) {
+    hs->tls13_state = state_read_server_certificate;
+    return ssl_hs_ok;
+  }
+
+
+  bool have_sigalgs = false, have_ca = false;
+  CBS sigalgs, ca;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+    {TLSEXT_TYPE_signature_algorithms, &have_sigalgs, &sigalgs},
+    {TLSEXT_TYPE_certificate_authorities, &have_ca, &ca},
+  };
+
+  CBS body = msg.body, context, extensions, supported_signature_algorithms;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!CBS_get_u8_length_prefixed(&body, &context) ||
+      // The request context is always empty during the handshake.
+      CBS_len(&context) != 0 ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0 ||
+      !ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* accept unknown */) ||
+      (have_ca && CBS_len(&ca) == 0) ||
+      !have_sigalgs ||
+      !CBS_get_u16_length_prefixed(&sigalgs,
+                                   &supported_signature_algorithms) ||
+      !tls1_parse_peer_sigalgs(hs, &supported_signature_algorithms)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (have_ca) {
+    hs->ca_names = ssl_parse_client_CA_list(ssl, &alert, &ca);
+    if (!hs->ca_names) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+  } else {
+    hs->ca_names.reset(sk_CRYPTO_BUFFER_new_null());
+    if (!hs->ca_names) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  hs->cert_request = true;
+  ssl->ctx->x509_method->hs_flush_cached_ca_names(hs);
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  if (msg.type != SSL3_MT_COMPRESSED_CERTIFICATE &&
+      !ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE)) {
+    return ssl_hs_error;
+  }
+
+  if (!tls13_process_certificate(hs, msg, false /* certificate required */) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_certificate_verify(
+    SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state_read_server_certificate_verify;
+      return ssl_hs_certificate_verify;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY) ||
+      !tls13_process_certificate_verify(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_server_certificate_reverify(
+    SSL_HANDSHAKE *hs) {
+  switch (ssl_reverify_peer_cert(hs, /*send_alert=*/true)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state_server_certificate_reverify;
+      return ssl_hs_certificate_verify;
+  }
+  hs->tls13_state = state_read_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED) ||
+      !tls13_process_finished(hs, msg, false /* don't use saved value */) ||
+      !ssl_hash_message(hs, msg) ||
+      // Update the secret to the master secret and derive traffic keys.
+      !tls13_advance_key_schedule(
+          hs, MakeConstSpan(kZeroes, hs->transcript.DigestLen())) ||
+      !tls13_derive_application_secrets(hs)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state_send_end_of_early_data;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_end_of_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  if (ssl->s3->early_data_accepted) {
+    hs->can_early_write = false;
+    // QUIC omits the EndOfEarlyData message. See draft-ietf-quic-tls-22,
+    // section 8.3.
+    if (ssl->quic_method == nullptr) {
+      ScopedCBB cbb;
+      CBB body;
+      if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                     SSL3_MT_END_OF_EARLY_DATA) ||
+          !ssl_add_message_cbb(ssl, cbb.get())) {
+        return ssl_hs_error;
+      }
+    }
+  }
+
+  if (hs->early_data_offered) {
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->tls13_state = state_send_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // The peer didn't request a certificate.
+  if (!hs->cert_request) {
+    hs->tls13_state = state_complete_second_flight;
+    return ssl_hs_ok;
+  }
+
+  // Call cert_cb to update the certificate.
+  if (hs->config->cert->cert_cb != NULL) {
+    int rv = hs->config->cert->cert_cb(ssl, hs->config->cert->cert_cb_arg);
+    if (rv == 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_CB_ERROR);
+      return ssl_hs_error;
+    }
+    if (rv < 0) {
+      hs->tls13_state = state_send_client_certificate;
+      return ssl_hs_x509_lookup;
+    }
+  }
+
+  if (!ssl_on_certificate_selected(hs) ||
+      !tls13_add_certificate(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_send_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_client_certificate_verify(SSL_HANDSHAKE *hs) {
+  // Don't send CertificateVerify if there is no certificate.
+  if (!ssl_has_certificate(hs)) {
+    hs->tls13_state = state_complete_second_flight;
+    return ssl_hs_ok;
+  }
+
+  switch (tls13_add_certificate_verify(hs)) {
+    case ssl_private_key_success:
+      hs->tls13_state = state_complete_second_flight;
+      return ssl_hs_ok;
+
+    case ssl_private_key_retry:
+      hs->tls13_state = state_send_client_certificate_verify;
+      return ssl_hs_private_key_operation;
+
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+  }
+
+  assert(0);
+  return ssl_hs_error;
+}
+
+static enum ssl_hs_wait_t do_complete_second_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Send a Channel ID assertion if necessary.
+  if (ssl->s3->channel_id_valid) {
+    if (!ssl_do_channel_id_callback(hs)) {
+      hs->tls13_state = state_complete_second_flight;
+      return ssl_hs_error;
+    }
+
+    if (hs->config->channel_id_private == NULL) {
+      return ssl_hs_channel_id_lookup;
+    }
+
+    ScopedCBB cbb;
+    CBB body;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_CHANNEL_ID) ||
+        !tls1_write_channel_id(hs, &body) ||
+        !ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Send a Finished message.
+  if (!tls13_add_finished(hs)) {
+    return ssl_hs_error;
+  }
+
+  // Derive the final keys and enable them.
+  if (!tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_open,
+                             hs->server_traffic_secret_0()) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                             hs->client_traffic_secret_0()) ||
+      !tls13_derive_resumption_secret(hs)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state_done;
+  return ssl_hs_flush;
+}
+
+enum ssl_hs_wait_t tls13_client_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->tls13_state != state_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum client_hs_state_t state =
+        static_cast<enum client_hs_state_t>(hs->tls13_state);
+    switch (state) {
+      case state_read_hello_retry_request:
+        ret = do_read_hello_retry_request(hs);
+        break;
+      case state_send_second_client_hello:
+        ret = do_send_second_client_hello(hs);
+        break;
+      case state_read_server_hello:
+        ret = do_read_server_hello(hs);
+        break;
+      case state_read_encrypted_extensions:
+        ret = do_read_encrypted_extensions(hs);
+        break;
+      case state_read_certificate_request:
+        ret = do_read_certificate_request(hs);
+        break;
+      case state_read_server_certificate:
+        ret = do_read_server_certificate(hs);
+        break;
+      case state_read_server_certificate_verify:
+        ret = do_read_server_certificate_verify(hs);
+        break;
+      case state_server_certificate_reverify:
+        ret = do_server_certificate_reverify(hs);
+        break;
+      case state_read_server_finished:
+        ret = do_read_server_finished(hs);
+        break;
+      case state_send_end_of_early_data:
+        ret = do_send_end_of_early_data(hs);
+        break;
+      case state_send_client_certificate:
+        ret = do_send_client_certificate(hs);
+        break;
+      case state_send_client_certificate_verify:
+        ret = do_send_client_certificate_verify(hs);
+        break;
+      case state_complete_second_flight:
+        ret = do_complete_second_flight(hs);
+        break;
+      case state_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->tls13_state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_CONNECT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  return ssl_hs_ok;
+}
+
+const char *tls13_client_handshake_state(SSL_HANDSHAKE *hs) {
+  enum client_hs_state_t state =
+      static_cast<enum client_hs_state_t>(hs->tls13_state);
+  switch (state) {
+    case state_read_hello_retry_request:
+      return "TLS 1.3 client read_hello_retry_request";
+    case state_send_second_client_hello:
+      return "TLS 1.3 client send_second_client_hello";
+    case state_read_server_hello:
+      return "TLS 1.3 client read_server_hello";
+    case state_read_encrypted_extensions:
+      return "TLS 1.3 client read_encrypted_extensions";
+    case state_read_certificate_request:
+      return "TLS 1.3 client read_certificate_request";
+    case state_read_server_certificate:
+      return "TLS 1.3 client read_server_certificate";
+    case state_read_server_certificate_verify:
+      return "TLS 1.3 client read_server_certificate_verify";
+    case state_server_certificate_reverify:
+      return "TLS 1.3 client server_certificate_reverify";
+    case state_read_server_finished:
+      return "TLS 1.3 client read_server_finished";
+    case state_send_end_of_early_data:
+      return "TLS 1.3 client send_end_of_early_data";
+    case state_send_client_certificate:
+      return "TLS 1.3 client send_client_certificate";
+    case state_send_client_certificate_verify:
+      return "TLS 1.3 client send_client_certificate_verify";
+    case state_complete_second_flight:
+      return "TLS 1.3 client complete_second_flight";
+    case state_done:
+      return "TLS 1.3 client done";
+  }
+
+  return "TLS 1.3 client unknown";
+}
+
+bool tls13_process_new_session_ticket(SSL *ssl, const SSLMessage &msg) {
+  if (ssl->s3->write_shutdown != ssl_shutdown_none) {
+    // Ignore tickets on shutdown. Callers tend to indiscriminately call
+    // |SSL_shutdown| before destroying an |SSL|, at which point calling the new
+    // session callback may be confusing.
+    return true;
+  }
+
+  UniquePtr<SSL_SESSION> session = SSL_SESSION_dup(
+      ssl->s3->established_session.get(), SSL_SESSION_INCLUDE_NONAUTH);
+  if (!session) {
+    return false;
+  }
+
+  ssl_session_rebase_time(ssl, session.get());
+
+  uint32_t server_timeout;
+  CBS body = msg.body, ticket_nonce, ticket, extensions;
+  if (!CBS_get_u32(&body, &server_timeout) ||
+      !CBS_get_u32(&body, &session->ticket_age_add) ||
+      !CBS_get_u8_length_prefixed(&body, &ticket_nonce) ||
+      !CBS_get_u16_length_prefixed(&body, &ticket) ||
+      !session->ticket.CopyFrom(ticket) ||
+      !CBS_get_u16_length_prefixed(&body, &extensions) ||
+      CBS_len(&body) != 0) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+    return false;
+  }
+
+  // Cap the renewable lifetime by the server advertised value. This avoids
+  // wasting bandwidth on 0-RTT when we know the server will reject it.
+  if (session->timeout > server_timeout) {
+    session->timeout = server_timeout;
+  }
+
+  if (!tls13_derive_session_psk(session.get(), ticket_nonce)) {
+    return false;
+  }
+
+  // Parse out the extensions.
+  bool have_early_data = false;
+  CBS early_data;
+  const SSL_EXTENSION_TYPE ext_types[] = {
+      {TLSEXT_TYPE_early_data, &have_early_data, &early_data},
+  };
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_parse_extensions(&extensions, &alert, ext_types,
+                            OPENSSL_ARRAY_SIZE(ext_types),
+                            1 /* ignore unknown */)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return false;
+  }
+
+  if (have_early_data) {
+    if (!CBS_get_u32(&early_data, &session->ticket_max_early_data) ||
+        CBS_len(&early_data) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+
+    // QUIC does not use the max_early_data_size parameter and always sets it to
+    // a fixed value. See draft-ietf-quic-tls-22, section 4.5.
+    if (ssl->quic_method != nullptr &&
+        session->ticket_max_early_data != 0xffffffff) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return false;
+    }
+  }
+
+  // Generate a session ID for this session. Some callers expect all sessions to
+  // have a session ID.
+  SHA256(CBS_data(&ticket), CBS_len(&ticket), session->session_id);
+  session->session_id_length = SHA256_DIGEST_LENGTH;
+
+  session->ticket_age_add_valid = true;
+  session->not_resumable = false;
+
+  if ((ssl->session_ctx->session_cache_mode & SSL_SESS_CACHE_CLIENT) &&
+      ssl->session_ctx->new_session_cb != NULL &&
+      ssl->session_ctx->new_session_cb(ssl, session.get())) {
+    // |new_session_cb|'s return value signals that it took ownership.
+    session.release();
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc
new file mode 100644
index 0000000..6b161d3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc	
@@ -0,0 +1,565 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <algorithm>
+#include <utility>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/hkdf.h>
+#include <openssl_grpc/hmac.h>
+#include <openssl_grpc/mem.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool init_key_schedule(SSL_HANDSHAKE *hs, uint16_t version,
+                              const SSL_CIPHER *cipher) {
+  if (!hs->transcript.InitHash(version, cipher)) {
+    return false;
+  }
+
+  // Initialize the secret to the zero key.
+  hs->ResizeSecrets(hs->transcript.DigestLen());
+  OPENSSL_memset(hs->secret().data(), 0, hs->secret().size());
+
+  return true;
+}
+
+static bool hkdf_extract_to_secret(SSL_HANDSHAKE *hs, Span<const uint8_t> in) {
+  size_t len;
+  if (!HKDF_extract(hs->secret().data(), &len, hs->transcript.Digest(),
+                    in.data(), in.size(), hs->secret().data(),
+                    hs->secret().size())) {
+    return false;
+  }
+  assert(len == hs->secret().size());
+  return true;
+}
+
+bool tls13_init_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk) {
+  if (!init_key_schedule(hs, ssl_protocol_version(hs->ssl), hs->new_cipher)) {
+    return false;
+  }
+
+  // Handback includes the whole handshake transcript, so we cannot free the
+  // transcript buffer in the handback case.
+  if (!hs->handback) {
+    hs->transcript.FreeBuffer();
+  }
+  return hkdf_extract_to_secret(hs, psk);
+}
+
+bool tls13_init_early_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk) {
+  SSL *const ssl = hs->ssl;
+  return init_key_schedule(hs, ssl_session_protocol_version(ssl->session.get()),
+                           ssl->session->cipher) &&
+         hkdf_extract_to_secret(hs, psk);
+}
+
+static Span<const char> label_to_span(const char *label) {
+  return MakeConstSpan(label, strlen(label));
+}
+
+static bool hkdf_expand_label(Span<uint8_t> out, const EVP_MD *digest,
+                              Span<const uint8_t> secret,
+                              Span<const char> label,
+                              Span<const uint8_t> hash) {
+  Span<const char> protocol_label = label_to_span("tls13 ");
+  ScopedCBB cbb;
+  CBB child;
+  Array<uint8_t> hkdf_label;
+  if (!CBB_init(cbb.get(), 2 + 1 + protocol_label.size() + label.size() + 1 +
+                               hash.size()) ||
+      !CBB_add_u16(cbb.get(), out.size()) ||
+      !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+      !CBB_add_bytes(&child,
+                     reinterpret_cast<const uint8_t *>(protocol_label.data()),
+                     protocol_label.size()) ||
+      !CBB_add_bytes(&child, reinterpret_cast<const uint8_t *>(label.data()),
+                     label.size()) ||
+      !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+      !CBB_add_bytes(&child, hash.data(), hash.size()) ||
+      !CBBFinishArray(cbb.get(), &hkdf_label)) {
+    return false;
+  }
+
+  return HKDF_expand(out.data(), out.size(), digest, secret.data(),
+                     secret.size(), hkdf_label.data(), hkdf_label.size());
+}
+
+static const char kTLS13LabelDerived[] = "derived";
+
+bool tls13_advance_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> in) {
+  uint8_t derive_context[EVP_MAX_MD_SIZE];
+  unsigned derive_context_len;
+  return EVP_Digest(nullptr, 0, derive_context, &derive_context_len,
+                    hs->transcript.Digest(), nullptr) &&
+         hkdf_expand_label(hs->secret(), hs->transcript.Digest(), hs->secret(),
+                           label_to_span(kTLS13LabelDerived),
+                           MakeConstSpan(derive_context, derive_context_len)) &&
+         hkdf_extract_to_secret(hs, in);
+}
+
+// derive_secret derives a secret of length |out.size()| and writes the result
+// in |out| with the given label, the current base secret, and the most
+// recently-saved handshake context. It returns true on success and false on
+// error.
+static bool derive_secret(SSL_HANDSHAKE *hs, Span<uint8_t> out,
+                          Span<const char> label) {
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len)) {
+    return false;
+  }
+
+  return hkdf_expand_label(out, hs->transcript.Digest(), hs->secret(), label,
+                           MakeConstSpan(context_hash, context_hash_len));
+}
+
+bool tls13_set_traffic_key(SSL *ssl, enum ssl_encryption_level_t level,
+                           enum evp_aead_direction_t direction,
+                           Span<const uint8_t> traffic_secret) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  uint16_t version = ssl_session_protocol_version(session);
+
+  UniquePtr<SSLAEADContext> traffic_aead;
+  if (ssl->quic_method == nullptr) {
+    // Look up cipher suite properties.
+    const EVP_AEAD *aead;
+    size_t discard;
+    if (!ssl_cipher_get_evp_aead(&aead, &discard, &discard, session->cipher,
+                                 version, SSL_is_dtls(ssl))) {
+      return false;
+    }
+
+    const EVP_MD *digest = ssl_session_get_digest(session);
+
+    // Derive the key.
+    size_t key_len = EVP_AEAD_key_length(aead);
+    uint8_t key_buf[EVP_AEAD_MAX_KEY_LENGTH];
+    auto key = MakeSpan(key_buf, key_len);
+    if (!hkdf_expand_label(key, digest, traffic_secret, label_to_span("key"),
+                           {})) {
+      return false;
+    }
+
+    // Derive the IV.
+    size_t iv_len = EVP_AEAD_nonce_length(aead);
+    uint8_t iv_buf[EVP_AEAD_MAX_NONCE_LENGTH];
+    auto iv = MakeSpan(iv_buf, iv_len);
+    if (!hkdf_expand_label(iv, digest, traffic_secret, label_to_span("iv"),
+                           {})) {
+      return false;
+    }
+
+
+    traffic_aead = SSLAEADContext::Create(direction, session->ssl_version,
+                                          SSL_is_dtls(ssl), session->cipher,
+                                          key, Span<const uint8_t>(), iv);
+  } else {
+    // Install a placeholder SSLAEADContext so that SSL accessors work. The
+    // encryption itself will be handled by the SSL_QUIC_METHOD.
+    traffic_aead =
+        SSLAEADContext::CreatePlaceholderForQUIC(version, session->cipher);
+    // QUIC never installs early data keys at the TLS layer.
+    assert(level != ssl_encryption_early_data);
+  }
+
+  if (!traffic_aead) {
+    return false;
+  }
+
+  if (direction == evp_aead_open) {
+    if (!ssl->method->set_read_state(ssl, std::move(traffic_aead))) {
+      return false;
+    }
+  } else {
+    if (!ssl->method->set_write_state(ssl, std::move(traffic_aead))) {
+      return false;
+    }
+  }
+
+  // Save the traffic secret.
+  if (traffic_secret.size() >
+          OPENSSL_ARRAY_SIZE(ssl->s3->read_traffic_secret) ||
+      traffic_secret.size() >
+          OPENSSL_ARRAY_SIZE(ssl->s3->write_traffic_secret)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  if (direction == evp_aead_open) {
+    OPENSSL_memmove(ssl->s3->read_traffic_secret, traffic_secret.data(),
+                    traffic_secret.size());
+    ssl->s3->read_traffic_secret_len = traffic_secret.size();
+    ssl->s3->read_level = level;
+  } else {
+    OPENSSL_memmove(ssl->s3->write_traffic_secret, traffic_secret.data(),
+                    traffic_secret.size());
+    ssl->s3->write_traffic_secret_len = traffic_secret.size();
+    ssl->s3->write_level = level;
+  }
+
+  return true;
+}
+
+
+static const char kTLS13LabelExporter[] = "exp master";
+
+static const char kTLS13LabelClientEarlyTraffic[] = "c e traffic";
+static const char kTLS13LabelClientHandshakeTraffic[] = "c hs traffic";
+static const char kTLS13LabelServerHandshakeTraffic[] = "s hs traffic";
+static const char kTLS13LabelClientApplicationTraffic[] = "c ap traffic";
+static const char kTLS13LabelServerApplicationTraffic[] = "s ap traffic";
+
+bool tls13_derive_early_secret(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!derive_secret(hs, hs->early_traffic_secret(),
+                     label_to_span(kTLS13LabelClientEarlyTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_EARLY_TRAFFIC_SECRET",
+                      hs->early_traffic_secret())) {
+    return false;
+  }
+  return true;
+}
+
+bool tls13_set_early_secret_for_quic(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->quic_method == nullptr) {
+    return true;
+  }
+  if (ssl->server) {
+    if (!ssl->quic_method->set_encryption_secrets(
+            ssl, ssl_encryption_early_data, hs->early_traffic_secret().data(),
+            /*write_secret=*/nullptr, hs->early_traffic_secret().size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+  } else {
+    if (!ssl->quic_method->set_encryption_secrets(
+            ssl, ssl_encryption_early_data, /*read_secret=*/nullptr,
+            hs->early_traffic_secret().data(),
+            hs->early_traffic_secret().size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+  }
+  return true;
+}
+
+static bool set_quic_secrets(SSL_HANDSHAKE *hs, ssl_encryption_level_t level,
+                             Span<const uint8_t> client_write_secret,
+                             Span<const uint8_t> server_write_secret) {
+  SSL *const ssl = hs->ssl;
+  assert(client_write_secret.size() == server_write_secret.size());
+  if (ssl->quic_method == nullptr) {
+    return true;
+  }
+  if (!ssl->server) {
+    std::swap(client_write_secret, server_write_secret);
+  }
+  return ssl->quic_method->set_encryption_secrets(
+      ssl, level,
+      /*read_secret=*/client_write_secret.data(),
+      /*write_secret=*/server_write_secret.data(), client_write_secret.size());
+}
+
+bool tls13_derive_handshake_secrets(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!derive_secret(hs, hs->client_handshake_secret(),
+                     label_to_span(kTLS13LabelClientHandshakeTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_HANDSHAKE_TRAFFIC_SECRET",
+                      hs->client_handshake_secret()) ||
+      !derive_secret(hs, hs->server_handshake_secret(),
+                     label_to_span(kTLS13LabelServerHandshakeTraffic)) ||
+      !ssl_log_secret(ssl, "SERVER_HANDSHAKE_TRAFFIC_SECRET",
+                      hs->server_handshake_secret()) ||
+      !set_quic_secrets(hs, ssl_encryption_handshake,
+                        hs->client_handshake_secret(),
+                        hs->server_handshake_secret())) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_derive_application_secrets(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ssl->s3->exporter_secret_len = hs->transcript.DigestLen();
+  if (!derive_secret(hs, hs->client_traffic_secret_0(),
+                     label_to_span(kTLS13LabelClientApplicationTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_TRAFFIC_SECRET_0",
+                      hs->client_traffic_secret_0()) ||
+      !derive_secret(hs, hs->server_traffic_secret_0(),
+                     label_to_span(kTLS13LabelServerApplicationTraffic)) ||
+      !ssl_log_secret(ssl, "SERVER_TRAFFIC_SECRET_0",
+                      hs->server_traffic_secret_0()) ||
+      !derive_secret(
+          hs, MakeSpan(ssl->s3->exporter_secret, ssl->s3->exporter_secret_len),
+          label_to_span(kTLS13LabelExporter)) ||
+      !ssl_log_secret(ssl, "EXPORTER_SECRET",
+                      MakeConstSpan(ssl->s3->exporter_secret,
+                                    ssl->s3->exporter_secret_len)) ||
+      !set_quic_secrets(hs, ssl_encryption_application,
+                        hs->client_traffic_secret_0(),
+                        hs->server_traffic_secret_0())) {
+    return false;
+  }
+
+  return true;
+}
+
+static const char kTLS13LabelApplicationTraffic[] = "traffic upd";
+
+bool tls13_rotate_traffic_key(SSL *ssl, enum evp_aead_direction_t direction) {
+  Span<uint8_t> secret;
+  if (direction == evp_aead_open) {
+    secret = MakeSpan(ssl->s3->read_traffic_secret,
+                      ssl->s3->read_traffic_secret_len);
+  } else {
+    secret = MakeSpan(ssl->s3->write_traffic_secret,
+                      ssl->s3->write_traffic_secret_len);
+  }
+
+  const EVP_MD *digest = ssl_session_get_digest(SSL_get_session(ssl));
+  return hkdf_expand_label(secret, digest, secret,
+                           label_to_span(kTLS13LabelApplicationTraffic), {}) &&
+         tls13_set_traffic_key(ssl, ssl_encryption_application, direction,
+                               secret);
+}
+
+static const char kTLS13LabelResumption[] = "res master";
+
+bool tls13_derive_resumption_secret(SSL_HANDSHAKE *hs) {
+  if (hs->transcript.DigestLen() > SSL_MAX_MASTER_KEY_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  hs->new_session->master_key_length = hs->transcript.DigestLen();
+  return derive_secret(
+      hs,
+      MakeSpan(hs->new_session->master_key, hs->new_session->master_key_length),
+      label_to_span(kTLS13LabelResumption));
+}
+
+static const char kTLS13LabelFinished[] = "finished";
+
+// tls13_verify_data sets |out| to be the HMAC of |context| using a derived
+// Finished key for both Finished messages and the PSK binder. |out| must have
+// space available for |EVP_MAX_MD_SIZE| bytes.
+static bool tls13_verify_data(uint8_t *out, size_t *out_len,
+                              const EVP_MD *digest, uint16_t version,
+                              Span<const uint8_t> secret,
+                              Span<const uint8_t> context) {
+  uint8_t key_buf[EVP_MAX_MD_SIZE];
+  auto key = MakeSpan(key_buf, EVP_MD_size(digest));
+  unsigned len;
+  if (!hkdf_expand_label(key, digest, secret,
+                         label_to_span(kTLS13LabelFinished), {}) ||
+      HMAC(digest, key.data(), key.size(), context.data(), context.size(), out,
+           &len) == nullptr) {
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+bool tls13_finished_mac(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len,
+                        bool is_server) {
+  Span<const uint8_t> traffic_secret =
+      is_server ? hs->server_handshake_secret() : hs->client_handshake_secret();
+
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len) ||
+      !tls13_verify_data(out, out_len, hs->transcript.Digest(),
+                         hs->ssl->version, traffic_secret,
+                         MakeConstSpan(context_hash, context_hash_len))) {
+    return 0;
+  }
+  return 1;
+}
+
+static const char kTLS13LabelResumptionPSK[] = "resumption";
+
+bool tls13_derive_session_psk(SSL_SESSION *session, Span<const uint8_t> nonce) {
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  // The session initially stores the resumption_master_secret, which we
+  // override with the PSK.
+  auto session_key = MakeSpan(session->master_key, session->master_key_length);
+  return hkdf_expand_label(session_key, digest, session_key,
+                           label_to_span(kTLS13LabelResumptionPSK), nonce);
+}
+
+static const char kTLS13LabelExportKeying[] = "exporter";
+
+bool tls13_export_keying_material(SSL *ssl, Span<uint8_t> out,
+                                  Span<const uint8_t> secret,
+                                  Span<const char> label,
+                                  Span<const uint8_t> context) {
+  if (secret.empty()) {
+    assert(0);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  const EVP_MD *digest = ssl_session_get_digest(SSL_get_session(ssl));
+
+  uint8_t hash_buf[EVP_MAX_MD_SIZE];
+  uint8_t export_context_buf[EVP_MAX_MD_SIZE];
+  unsigned hash_len;
+  unsigned export_context_len;
+  if (!EVP_Digest(context.data(), context.size(), hash_buf, &hash_len, digest,
+                  nullptr) ||
+      !EVP_Digest(nullptr, 0, export_context_buf, &export_context_len, digest,
+                  nullptr)) {
+    return false;
+  }
+
+  auto hash = MakeConstSpan(hash_buf, hash_len);
+  auto export_context = MakeConstSpan(export_context_buf, export_context_len);
+  uint8_t derived_secret_buf[EVP_MAX_MD_SIZE];
+  auto derived_secret = MakeSpan(derived_secret_buf, EVP_MD_size(digest));
+  return hkdf_expand_label(derived_secret, digest, secret, label,
+                           export_context) &&
+         hkdf_expand_label(out, digest, derived_secret,
+                           label_to_span(kTLS13LabelExportKeying), hash);
+}
+
+static const char kTLS13LabelPSKBinder[] = "res binder";
+
+static bool tls13_psk_binder(uint8_t *out, size_t *out_len, uint16_t version,
+                             const EVP_MD *digest, Span<const uint8_t> psk,
+                             Span<const uint8_t> context) {
+  uint8_t binder_context[EVP_MAX_MD_SIZE];
+  unsigned binder_context_len;
+  if (!EVP_Digest(NULL, 0, binder_context, &binder_context_len, digest, NULL)) {
+    return false;
+  }
+
+  uint8_t early_secret[EVP_MAX_MD_SIZE] = {0};
+  size_t early_secret_len;
+  if (!HKDF_extract(early_secret, &early_secret_len, digest, psk.data(),
+                    psk.size(), NULL, 0)) {
+    return false;
+  }
+
+  uint8_t binder_key_buf[EVP_MAX_MD_SIZE] = {0};
+  auto binder_key = MakeSpan(binder_key_buf, EVP_MD_size(digest));
+  if (!hkdf_expand_label(binder_key, digest,
+                         MakeConstSpan(early_secret, early_secret_len),
+                         label_to_span(kTLS13LabelPSKBinder),
+                         MakeConstSpan(binder_context, binder_context_len)) ||
+      !tls13_verify_data(out, out_len, digest, version, binder_key, context)) {
+    return false;
+  }
+
+  assert(*out_len == EVP_MD_size(digest));
+  return true;
+}
+
+static bool hash_transcript_and_truncated_client_hello(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, const EVP_MD *digest,
+    Span<const uint8_t> client_hello, size_t binders_len) {
+  // Truncate the ClientHello.
+  if (binders_len + 2 < binders_len || client_hello.size() < binders_len + 2) {
+    return false;
+  }
+  client_hello = client_hello.subspan(0, client_hello.size() - binders_len - 2);
+
+  ScopedEVP_MD_CTX ctx;
+  unsigned len;
+  if (!hs->transcript.CopyToHashContext(ctx.get(), digest) ||
+      !EVP_DigestUpdate(ctx.get(), client_hello.data(), client_hello.size()) ||
+      !EVP_DigestFinal_ex(ctx.get(), out, &len)) {
+    return false;
+  }
+
+  *out_len = len;
+  return true;
+}
+
+bool tls13_write_psk_binder(SSL_HANDSHAKE *hs, Span<uint8_t> msg) {
+  SSL *const ssl = hs->ssl;
+  const EVP_MD *digest = ssl_session_get_digest(ssl->session.get());
+  size_t hash_len = EVP_MD_size(digest);
+
+  ScopedEVP_MD_CTX ctx;
+  uint8_t context[EVP_MAX_MD_SIZE];
+  size_t context_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+  size_t verify_data_len;
+  if (!hash_transcript_and_truncated_client_hello(
+          hs, context, &context_len, digest, msg,
+          1 /* length prefix */ + hash_len) ||
+      !tls13_psk_binder(verify_data, &verify_data_len,
+                        ssl->session->ssl_version, digest,
+                        MakeConstSpan(ssl->session->master_key,
+                                      ssl->session->master_key_length),
+                        MakeConstSpan(context, context_len)) ||
+      verify_data_len != hash_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  OPENSSL_memcpy(msg.data() + msg.size() - verify_data_len, verify_data,
+                 verify_data_len);
+  return true;
+}
+
+bool tls13_verify_psk_binder(SSL_HANDSHAKE *hs, SSL_SESSION *session,
+                             const SSLMessage &msg, CBS *binders) {
+  uint8_t context[EVP_MAX_MD_SIZE];
+  size_t context_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+  size_t verify_data_len;
+  CBS binder;
+  if (!hash_transcript_and_truncated_client_hello(hs, context, &context_len,
+                                                  hs->transcript.Digest(),
+                                                  msg.raw, CBS_len(binders)) ||
+      !tls13_psk_binder(
+          verify_data, &verify_data_len, hs->ssl->version,
+          hs->transcript.Digest(),
+          MakeConstSpan(session->master_key, session->master_key_length),
+          MakeConstSpan(context, context_len)) ||
+      // We only consider the first PSK, so compare against the first binder.
+      !CBS_get_u8_length_prefixed(binders, &binder)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  bool binder_ok =
+      CBS_len(&binder) == verify_data_len &&
+      CRYPTO_memcmp(CBS_data(&binder), verify_data, verify_data_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  binder_ok = true;
+#endif
+  if (!binder_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc.grpc_back
new file mode 100644
index 0000000..1f6ff64
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_enc.cc.grpc_back	
@@ -0,0 +1,565 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <algorithm>
+#include <utility>
+
+#include <openssl/aead.h>
+#include <openssl/bytestring.h>
+#include <openssl/digest.h>
+#include <openssl/hkdf.h>
+#include <openssl/hmac.h>
+#include <openssl/mem.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static bool init_key_schedule(SSL_HANDSHAKE *hs, uint16_t version,
+                              const SSL_CIPHER *cipher) {
+  if (!hs->transcript.InitHash(version, cipher)) {
+    return false;
+  }
+
+  // Initialize the secret to the zero key.
+  hs->ResizeSecrets(hs->transcript.DigestLen());
+  OPENSSL_memset(hs->secret().data(), 0, hs->secret().size());
+
+  return true;
+}
+
+static bool hkdf_extract_to_secret(SSL_HANDSHAKE *hs, Span<const uint8_t> in) {
+  size_t len;
+  if (!HKDF_extract(hs->secret().data(), &len, hs->transcript.Digest(),
+                    in.data(), in.size(), hs->secret().data(),
+                    hs->secret().size())) {
+    return false;
+  }
+  assert(len == hs->secret().size());
+  return true;
+}
+
+bool tls13_init_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk) {
+  if (!init_key_schedule(hs, ssl_protocol_version(hs->ssl), hs->new_cipher)) {
+    return false;
+  }
+
+  // Handback includes the whole handshake transcript, so we cannot free the
+  // transcript buffer in the handback case.
+  if (!hs->handback) {
+    hs->transcript.FreeBuffer();
+  }
+  return hkdf_extract_to_secret(hs, psk);
+}
+
+bool tls13_init_early_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> psk) {
+  SSL *const ssl = hs->ssl;
+  return init_key_schedule(hs, ssl_session_protocol_version(ssl->session.get()),
+                           ssl->session->cipher) &&
+         hkdf_extract_to_secret(hs, psk);
+}
+
+static Span<const char> label_to_span(const char *label) {
+  return MakeConstSpan(label, strlen(label));
+}
+
+static bool hkdf_expand_label(Span<uint8_t> out, const EVP_MD *digest,
+                              Span<const uint8_t> secret,
+                              Span<const char> label,
+                              Span<const uint8_t> hash) {
+  Span<const char> protocol_label = label_to_span("tls13 ");
+  ScopedCBB cbb;
+  CBB child;
+  Array<uint8_t> hkdf_label;
+  if (!CBB_init(cbb.get(), 2 + 1 + protocol_label.size() + label.size() + 1 +
+                               hash.size()) ||
+      !CBB_add_u16(cbb.get(), out.size()) ||
+      !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+      !CBB_add_bytes(&child,
+                     reinterpret_cast<const uint8_t *>(protocol_label.data()),
+                     protocol_label.size()) ||
+      !CBB_add_bytes(&child, reinterpret_cast<const uint8_t *>(label.data()),
+                     label.size()) ||
+      !CBB_add_u8_length_prefixed(cbb.get(), &child) ||
+      !CBB_add_bytes(&child, hash.data(), hash.size()) ||
+      !CBBFinishArray(cbb.get(), &hkdf_label)) {
+    return false;
+  }
+
+  return HKDF_expand(out.data(), out.size(), digest, secret.data(),
+                     secret.size(), hkdf_label.data(), hkdf_label.size());
+}
+
+static const char kTLS13LabelDerived[] = "derived";
+
+bool tls13_advance_key_schedule(SSL_HANDSHAKE *hs, Span<const uint8_t> in) {
+  uint8_t derive_context[EVP_MAX_MD_SIZE];
+  unsigned derive_context_len;
+  return EVP_Digest(nullptr, 0, derive_context, &derive_context_len,
+                    hs->transcript.Digest(), nullptr) &&
+         hkdf_expand_label(hs->secret(), hs->transcript.Digest(), hs->secret(),
+                           label_to_span(kTLS13LabelDerived),
+                           MakeConstSpan(derive_context, derive_context_len)) &&
+         hkdf_extract_to_secret(hs, in);
+}
+
+// derive_secret derives a secret of length |out.size()| and writes the result
+// in |out| with the given label, the current base secret, and the most
+// recently-saved handshake context. It returns true on success and false on
+// error.
+static bool derive_secret(SSL_HANDSHAKE *hs, Span<uint8_t> out,
+                          Span<const char> label) {
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len)) {
+    return false;
+  }
+
+  return hkdf_expand_label(out, hs->transcript.Digest(), hs->secret(), label,
+                           MakeConstSpan(context_hash, context_hash_len));
+}
+
+bool tls13_set_traffic_key(SSL *ssl, enum ssl_encryption_level_t level,
+                           enum evp_aead_direction_t direction,
+                           Span<const uint8_t> traffic_secret) {
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  uint16_t version = ssl_session_protocol_version(session);
+
+  UniquePtr<SSLAEADContext> traffic_aead;
+  if (ssl->quic_method == nullptr) {
+    // Look up cipher suite properties.
+    const EVP_AEAD *aead;
+    size_t discard;
+    if (!ssl_cipher_get_evp_aead(&aead, &discard, &discard, session->cipher,
+                                 version, SSL_is_dtls(ssl))) {
+      return false;
+    }
+
+    const EVP_MD *digest = ssl_session_get_digest(session);
+
+    // Derive the key.
+    size_t key_len = EVP_AEAD_key_length(aead);
+    uint8_t key_buf[EVP_AEAD_MAX_KEY_LENGTH];
+    auto key = MakeSpan(key_buf, key_len);
+    if (!hkdf_expand_label(key, digest, traffic_secret, label_to_span("key"),
+                           {})) {
+      return false;
+    }
+
+    // Derive the IV.
+    size_t iv_len = EVP_AEAD_nonce_length(aead);
+    uint8_t iv_buf[EVP_AEAD_MAX_NONCE_LENGTH];
+    auto iv = MakeSpan(iv_buf, iv_len);
+    if (!hkdf_expand_label(iv, digest, traffic_secret, label_to_span("iv"),
+                           {})) {
+      return false;
+    }
+
+
+    traffic_aead = SSLAEADContext::Create(direction, session->ssl_version,
+                                          SSL_is_dtls(ssl), session->cipher,
+                                          key, Span<const uint8_t>(), iv);
+  } else {
+    // Install a placeholder SSLAEADContext so that SSL accessors work. The
+    // encryption itself will be handled by the SSL_QUIC_METHOD.
+    traffic_aead =
+        SSLAEADContext::CreatePlaceholderForQUIC(version, session->cipher);
+    // QUIC never installs early data keys at the TLS layer.
+    assert(level != ssl_encryption_early_data);
+  }
+
+  if (!traffic_aead) {
+    return false;
+  }
+
+  if (direction == evp_aead_open) {
+    if (!ssl->method->set_read_state(ssl, std::move(traffic_aead))) {
+      return false;
+    }
+  } else {
+    if (!ssl->method->set_write_state(ssl, std::move(traffic_aead))) {
+      return false;
+    }
+  }
+
+  // Save the traffic secret.
+  if (traffic_secret.size() >
+          OPENSSL_ARRAY_SIZE(ssl->s3->read_traffic_secret) ||
+      traffic_secret.size() >
+          OPENSSL_ARRAY_SIZE(ssl->s3->write_traffic_secret)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  if (direction == evp_aead_open) {
+    OPENSSL_memmove(ssl->s3->read_traffic_secret, traffic_secret.data(),
+                    traffic_secret.size());
+    ssl->s3->read_traffic_secret_len = traffic_secret.size();
+    ssl->s3->read_level = level;
+  } else {
+    OPENSSL_memmove(ssl->s3->write_traffic_secret, traffic_secret.data(),
+                    traffic_secret.size());
+    ssl->s3->write_traffic_secret_len = traffic_secret.size();
+    ssl->s3->write_level = level;
+  }
+
+  return true;
+}
+
+
+static const char kTLS13LabelExporter[] = "exp master";
+
+static const char kTLS13LabelClientEarlyTraffic[] = "c e traffic";
+static const char kTLS13LabelClientHandshakeTraffic[] = "c hs traffic";
+static const char kTLS13LabelServerHandshakeTraffic[] = "s hs traffic";
+static const char kTLS13LabelClientApplicationTraffic[] = "c ap traffic";
+static const char kTLS13LabelServerApplicationTraffic[] = "s ap traffic";
+
+bool tls13_derive_early_secret(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!derive_secret(hs, hs->early_traffic_secret(),
+                     label_to_span(kTLS13LabelClientEarlyTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_EARLY_TRAFFIC_SECRET",
+                      hs->early_traffic_secret())) {
+    return false;
+  }
+  return true;
+}
+
+bool tls13_set_early_secret_for_quic(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->quic_method == nullptr) {
+    return true;
+  }
+  if (ssl->server) {
+    if (!ssl->quic_method->set_encryption_secrets(
+            ssl, ssl_encryption_early_data, hs->early_traffic_secret().data(),
+            /*write_secret=*/nullptr, hs->early_traffic_secret().size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+  } else {
+    if (!ssl->quic_method->set_encryption_secrets(
+            ssl, ssl_encryption_early_data, /*read_secret=*/nullptr,
+            hs->early_traffic_secret().data(),
+            hs->early_traffic_secret().size())) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_QUIC_INTERNAL_ERROR);
+      return false;
+    }
+  }
+  return true;
+}
+
+static bool set_quic_secrets(SSL_HANDSHAKE *hs, ssl_encryption_level_t level,
+                             Span<const uint8_t> client_write_secret,
+                             Span<const uint8_t> server_write_secret) {
+  SSL *const ssl = hs->ssl;
+  assert(client_write_secret.size() == server_write_secret.size());
+  if (ssl->quic_method == nullptr) {
+    return true;
+  }
+  if (!ssl->server) {
+    std::swap(client_write_secret, server_write_secret);
+  }
+  return ssl->quic_method->set_encryption_secrets(
+      ssl, level,
+      /*read_secret=*/client_write_secret.data(),
+      /*write_secret=*/server_write_secret.data(), client_write_secret.size());
+}
+
+bool tls13_derive_handshake_secrets(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!derive_secret(hs, hs->client_handshake_secret(),
+                     label_to_span(kTLS13LabelClientHandshakeTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_HANDSHAKE_TRAFFIC_SECRET",
+                      hs->client_handshake_secret()) ||
+      !derive_secret(hs, hs->server_handshake_secret(),
+                     label_to_span(kTLS13LabelServerHandshakeTraffic)) ||
+      !ssl_log_secret(ssl, "SERVER_HANDSHAKE_TRAFFIC_SECRET",
+                      hs->server_handshake_secret()) ||
+      !set_quic_secrets(hs, ssl_encryption_handshake,
+                        hs->client_handshake_secret(),
+                        hs->server_handshake_secret())) {
+    return false;
+  }
+
+  return true;
+}
+
+bool tls13_derive_application_secrets(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  ssl->s3->exporter_secret_len = hs->transcript.DigestLen();
+  if (!derive_secret(hs, hs->client_traffic_secret_0(),
+                     label_to_span(kTLS13LabelClientApplicationTraffic)) ||
+      !ssl_log_secret(ssl, "CLIENT_TRAFFIC_SECRET_0",
+                      hs->client_traffic_secret_0()) ||
+      !derive_secret(hs, hs->server_traffic_secret_0(),
+                     label_to_span(kTLS13LabelServerApplicationTraffic)) ||
+      !ssl_log_secret(ssl, "SERVER_TRAFFIC_SECRET_0",
+                      hs->server_traffic_secret_0()) ||
+      !derive_secret(
+          hs, MakeSpan(ssl->s3->exporter_secret, ssl->s3->exporter_secret_len),
+          label_to_span(kTLS13LabelExporter)) ||
+      !ssl_log_secret(ssl, "EXPORTER_SECRET",
+                      MakeConstSpan(ssl->s3->exporter_secret,
+                                    ssl->s3->exporter_secret_len)) ||
+      !set_quic_secrets(hs, ssl_encryption_application,
+                        hs->client_traffic_secret_0(),
+                        hs->server_traffic_secret_0())) {
+    return false;
+  }
+
+  return true;
+}
+
+static const char kTLS13LabelApplicationTraffic[] = "traffic upd";
+
+bool tls13_rotate_traffic_key(SSL *ssl, enum evp_aead_direction_t direction) {
+  Span<uint8_t> secret;
+  if (direction == evp_aead_open) {
+    secret = MakeSpan(ssl->s3->read_traffic_secret,
+                      ssl->s3->read_traffic_secret_len);
+  } else {
+    secret = MakeSpan(ssl->s3->write_traffic_secret,
+                      ssl->s3->write_traffic_secret_len);
+  }
+
+  const EVP_MD *digest = ssl_session_get_digest(SSL_get_session(ssl));
+  return hkdf_expand_label(secret, digest, secret,
+                           label_to_span(kTLS13LabelApplicationTraffic), {}) &&
+         tls13_set_traffic_key(ssl, ssl_encryption_application, direction,
+                               secret);
+}
+
+static const char kTLS13LabelResumption[] = "res master";
+
+bool tls13_derive_resumption_secret(SSL_HANDSHAKE *hs) {
+  if (hs->transcript.DigestLen() > SSL_MAX_MASTER_KEY_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+  hs->new_session->master_key_length = hs->transcript.DigestLen();
+  return derive_secret(
+      hs,
+      MakeSpan(hs->new_session->master_key, hs->new_session->master_key_length),
+      label_to_span(kTLS13LabelResumption));
+}
+
+static const char kTLS13LabelFinished[] = "finished";
+
+// tls13_verify_data sets |out| to be the HMAC of |context| using a derived
+// Finished key for both Finished messages and the PSK binder. |out| must have
+// space available for |EVP_MAX_MD_SIZE| bytes.
+static bool tls13_verify_data(uint8_t *out, size_t *out_len,
+                              const EVP_MD *digest, uint16_t version,
+                              Span<const uint8_t> secret,
+                              Span<const uint8_t> context) {
+  uint8_t key_buf[EVP_MAX_MD_SIZE];
+  auto key = MakeSpan(key_buf, EVP_MD_size(digest));
+  unsigned len;
+  if (!hkdf_expand_label(key, digest, secret,
+                         label_to_span(kTLS13LabelFinished), {}) ||
+      HMAC(digest, key.data(), key.size(), context.data(), context.size(), out,
+           &len) == nullptr) {
+    return false;
+  }
+  *out_len = len;
+  return true;
+}
+
+bool tls13_finished_mac(SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len,
+                        bool is_server) {
+  Span<const uint8_t> traffic_secret =
+      is_server ? hs->server_handshake_secret() : hs->client_handshake_secret();
+
+  uint8_t context_hash[EVP_MAX_MD_SIZE];
+  size_t context_hash_len;
+  if (!hs->transcript.GetHash(context_hash, &context_hash_len) ||
+      !tls13_verify_data(out, out_len, hs->transcript.Digest(),
+                         hs->ssl->version, traffic_secret,
+                         MakeConstSpan(context_hash, context_hash_len))) {
+    return 0;
+  }
+  return 1;
+}
+
+static const char kTLS13LabelResumptionPSK[] = "resumption";
+
+bool tls13_derive_session_psk(SSL_SESSION *session, Span<const uint8_t> nonce) {
+  const EVP_MD *digest = ssl_session_get_digest(session);
+  // The session initially stores the resumption_master_secret, which we
+  // override with the PSK.
+  auto session_key = MakeSpan(session->master_key, session->master_key_length);
+  return hkdf_expand_label(session_key, digest, session_key,
+                           label_to_span(kTLS13LabelResumptionPSK), nonce);
+}
+
+static const char kTLS13LabelExportKeying[] = "exporter";
+
+bool tls13_export_keying_material(SSL *ssl, Span<uint8_t> out,
+                                  Span<const uint8_t> secret,
+                                  Span<const char> label,
+                                  Span<const uint8_t> context) {
+  if (secret.empty()) {
+    assert(0);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  const EVP_MD *digest = ssl_session_get_digest(SSL_get_session(ssl));
+
+  uint8_t hash_buf[EVP_MAX_MD_SIZE];
+  uint8_t export_context_buf[EVP_MAX_MD_SIZE];
+  unsigned hash_len;
+  unsigned export_context_len;
+  if (!EVP_Digest(context.data(), context.size(), hash_buf, &hash_len, digest,
+                  nullptr) ||
+      !EVP_Digest(nullptr, 0, export_context_buf, &export_context_len, digest,
+                  nullptr)) {
+    return false;
+  }
+
+  auto hash = MakeConstSpan(hash_buf, hash_len);
+  auto export_context = MakeConstSpan(export_context_buf, export_context_len);
+  uint8_t derived_secret_buf[EVP_MAX_MD_SIZE];
+  auto derived_secret = MakeSpan(derived_secret_buf, EVP_MD_size(digest));
+  return hkdf_expand_label(derived_secret, digest, secret, label,
+                           export_context) &&
+         hkdf_expand_label(out, digest, derived_secret,
+                           label_to_span(kTLS13LabelExportKeying), hash);
+}
+
+static const char kTLS13LabelPSKBinder[] = "res binder";
+
+static bool tls13_psk_binder(uint8_t *out, size_t *out_len, uint16_t version,
+                             const EVP_MD *digest, Span<const uint8_t> psk,
+                             Span<const uint8_t> context) {
+  uint8_t binder_context[EVP_MAX_MD_SIZE];
+  unsigned binder_context_len;
+  if (!EVP_Digest(NULL, 0, binder_context, &binder_context_len, digest, NULL)) {
+    return false;
+  }
+
+  uint8_t early_secret[EVP_MAX_MD_SIZE] = {0};
+  size_t early_secret_len;
+  if (!HKDF_extract(early_secret, &early_secret_len, digest, psk.data(),
+                    psk.size(), NULL, 0)) {
+    return false;
+  }
+
+  uint8_t binder_key_buf[EVP_MAX_MD_SIZE] = {0};
+  auto binder_key = MakeSpan(binder_key_buf, EVP_MD_size(digest));
+  if (!hkdf_expand_label(binder_key, digest,
+                         MakeConstSpan(early_secret, early_secret_len),
+                         label_to_span(kTLS13LabelPSKBinder),
+                         MakeConstSpan(binder_context, binder_context_len)) ||
+      !tls13_verify_data(out, out_len, digest, version, binder_key, context)) {
+    return false;
+  }
+
+  assert(*out_len == EVP_MD_size(digest));
+  return true;
+}
+
+static bool hash_transcript_and_truncated_client_hello(
+    SSL_HANDSHAKE *hs, uint8_t *out, size_t *out_len, const EVP_MD *digest,
+    Span<const uint8_t> client_hello, size_t binders_len) {
+  // Truncate the ClientHello.
+  if (binders_len + 2 < binders_len || client_hello.size() < binders_len + 2) {
+    return false;
+  }
+  client_hello = client_hello.subspan(0, client_hello.size() - binders_len - 2);
+
+  ScopedEVP_MD_CTX ctx;
+  unsigned len;
+  if (!hs->transcript.CopyToHashContext(ctx.get(), digest) ||
+      !EVP_DigestUpdate(ctx.get(), client_hello.data(), client_hello.size()) ||
+      !EVP_DigestFinal_ex(ctx.get(), out, &len)) {
+    return false;
+  }
+
+  *out_len = len;
+  return true;
+}
+
+bool tls13_write_psk_binder(SSL_HANDSHAKE *hs, Span<uint8_t> msg) {
+  SSL *const ssl = hs->ssl;
+  const EVP_MD *digest = ssl_session_get_digest(ssl->session.get());
+  size_t hash_len = EVP_MD_size(digest);
+
+  ScopedEVP_MD_CTX ctx;
+  uint8_t context[EVP_MAX_MD_SIZE];
+  size_t context_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+  size_t verify_data_len;
+  if (!hash_transcript_and_truncated_client_hello(
+          hs, context, &context_len, digest, msg,
+          1 /* length prefix */ + hash_len) ||
+      !tls13_psk_binder(verify_data, &verify_data_len,
+                        ssl->session->ssl_version, digest,
+                        MakeConstSpan(ssl->session->master_key,
+                                      ssl->session->master_key_length),
+                        MakeConstSpan(context, context_len)) ||
+      verify_data_len != hash_len) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  OPENSSL_memcpy(msg.data() + msg.size() - verify_data_len, verify_data,
+                 verify_data_len);
+  return true;
+}
+
+bool tls13_verify_psk_binder(SSL_HANDSHAKE *hs, SSL_SESSION *session,
+                             const SSLMessage &msg, CBS *binders) {
+  uint8_t context[EVP_MAX_MD_SIZE];
+  size_t context_len;
+  uint8_t verify_data[EVP_MAX_MD_SIZE];
+  size_t verify_data_len;
+  CBS binder;
+  if (!hash_transcript_and_truncated_client_hello(hs, context, &context_len,
+                                                  hs->transcript.Digest(),
+                                                  msg.raw, CBS_len(binders)) ||
+      !tls13_psk_binder(
+          verify_data, &verify_data_len, hs->ssl->version,
+          hs->transcript.Digest(),
+          MakeConstSpan(session->master_key, session->master_key_length),
+          MakeConstSpan(context, context_len)) ||
+      // We only consider the first PSK, so compare against the first binder.
+      !CBS_get_u8_length_prefixed(binders, &binder)) {
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  bool binder_ok =
+      CBS_len(&binder) == verify_data_len &&
+      CRYPTO_memcmp(CBS_data(&binder), verify_data, verify_data_len) == 0;
+#if defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  binder_ok = true;
+#endif
+  if (!binder_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DIGEST_CHECK_FAILED);
+    return false;
+  }
+
+  return true;
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc
new file mode 100644
index 0000000..68c092c
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc	
@@ -0,0 +1,1066 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <tuple>
+
+#include <openssl_grpc/aead.h>
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/digest.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/stack.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
+
+// Allow a minute of ticket age skew in either direction. This covers
+// transmission delays in ClientHello and NewSessionTicket, as well as
+// drift between client and server clock rate since the ticket was issued.
+// See RFC 8446, section 8.3.
+static const int32_t kMaxTicketAgeSkewSeconds = 60;
+
+static int resolve_ecdhe_secret(SSL_HANDSHAKE *hs, bool *out_need_retry,
+                                SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  *out_need_retry = false;
+
+  // We only support connections that include an ECDHE key exchange.
+  CBS key_share;
+  if (!ssl_client_hello_get_extension(client_hello, &key_share,
+                                      TLSEXT_TYPE_key_share)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
+    return 0;
+  }
+
+  bool found_key_share;
+  Array<uint8_t> dhe_secret;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_ext_key_share_parse_clienthello(hs, &found_key_share, &dhe_secret,
+                                           &alert, &key_share)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return 0;
+  }
+
+  if (!found_key_share) {
+    *out_need_retry = true;
+    return 0;
+  }
+
+  return tls13_advance_key_schedule(hs, dhe_secret);
+}
+
+static int ssl_ext_supported_versions_add_serverhello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, hs->ssl->version) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static const SSL_CIPHER *choose_tls13_cipher(
+    const SSL *ssl, const SSL_CLIENT_HELLO *client_hello, uint16_t group_id) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  const uint16_t version = ssl_protocol_version(ssl);
+
+  return ssl_choose_tls13_cipher(cipher_suites, version, group_id);
+}
+
+static bool add_new_session_tickets(SSL_HANDSHAKE *hs, bool *out_sent_tickets) {
+  SSL *const ssl = hs->ssl;
+  if (// If the client doesn't accept resumption with PSK_DHE_KE, don't send a
+      // session ticket.
+      !hs->accept_psk_mode ||
+      // We only implement stateless resumption in TLS 1.3, so skip sending
+      // tickets if disabled.
+      (SSL_get_options(ssl) & SSL_OP_NO_TICKET)) {
+    *out_sent_tickets = false;
+    return true;
+  }
+
+  // TLS 1.3 recommends single-use tickets, so issue multiple tickets in case
+  // the client makes several connections before getting a renewal.
+  static const int kNumTickets = 2;
+
+  // Rebase the session timestamp so that it is measured from ticket
+  // issuance.
+  ssl_session_rebase_time(ssl, hs->new_session.get());
+
+  for (int i = 0; i < kNumTickets; i++) {
+    UniquePtr<SSL_SESSION> session(
+        SSL_SESSION_dup(hs->new_session.get(), SSL_SESSION_INCLUDE_NONAUTH));
+    if (!session) {
+      return false;
+    }
+
+    if (!RAND_bytes((uint8_t *)&session->ticket_age_add, 4)) {
+      return false;
+    }
+    session->ticket_age_add_valid = true;
+    if (ssl->enable_early_data) {
+      // QUIC does not use the max_early_data_size parameter and always sets it
+      // to a fixed value. See draft-ietf-quic-tls-22, section 4.5.
+      session->ticket_max_early_data =
+          ssl->quic_method != nullptr ? 0xffffffff : kMaxEarlyDataAccepted;
+    }
+
+    static_assert(kNumTickets < 256, "Too many tickets");
+    uint8_t nonce[] = {static_cast<uint8_t>(i)};
+
+    ScopedCBB cbb;
+    CBB body, nonce_cbb, ticket, extensions;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_NEW_SESSION_TICKET) ||
+        !CBB_add_u32(&body, session->timeout) ||
+        !CBB_add_u32(&body, session->ticket_age_add) ||
+        !CBB_add_u8_length_prefixed(&body, &nonce_cbb) ||
+        !CBB_add_bytes(&nonce_cbb, nonce, sizeof(nonce)) ||
+        !CBB_add_u16_length_prefixed(&body, &ticket) ||
+        !tls13_derive_session_psk(session.get(), nonce) ||
+        !ssl_encrypt_ticket(hs, &ticket, session.get()) ||
+        !CBB_add_u16_length_prefixed(&body, &extensions)) {
+      return false;
+    }
+
+    if (ssl->enable_early_data) {
+      CBB early_data;
+      if (!CBB_add_u16(&extensions, TLSEXT_TYPE_early_data) ||
+          !CBB_add_u16_length_prefixed(&extensions, &early_data) ||
+          !CBB_add_u32(&early_data, session->ticket_max_early_data) ||
+          !CBB_flush(&extensions)) {
+        return false;
+      }
+    }
+
+    // Add a fake extension. See draft-davidben-tls-grease-01.
+    if (!CBB_add_u16(&extensions,
+                     ssl_get_grease_value(hs, ssl_grease_ticket_extension)) ||
+        !CBB_add_u16(&extensions, 0 /* empty */)) {
+      return false;
+    }
+
+    if (!ssl_add_message_cbb(ssl, cbb.get())) {
+      return false;
+    }
+  }
+
+  *out_sent_tickets = true;
+  return true;
+}
+
+static enum ssl_hs_wait_t do_select_parameters(SSL_HANDSHAKE *hs) {
+  // At this point, most ClientHello extensions have already been processed by
+  // the common handshake logic. Resolve the remaining non-PSK parameters.
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(hs->session_id, client_hello.session_id,
+                 client_hello.session_id_len);
+  hs->session_id_len = client_hello.session_id_len;
+
+  uint16_t group_id;
+  if (!tls1_get_shared_group(hs, &group_id)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_GROUP);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // Negotiate the cipher suite.
+  hs->new_cipher = choose_tls13_cipher(ssl, &client_hello, group_id);
+  if (hs->new_cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_CIPHER);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // HTTP/2 negotiation depends on the cipher suite, so ALPN negotiation was
+  // deferred. Complete it now.
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_negotiate_alpn(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // The PRF hash is now known. Set up the key schedule and hash the
+  // ClientHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state13_select_session;
+  return ssl_hs_ok;
+}
+
+static enum ssl_ticket_aead_result_t select_session(
+    SSL_HANDSHAKE *hs, uint8_t *out_alert, UniquePtr<SSL_SESSION> *out_session,
+    int32_t *out_ticket_age_skew, bool *out_offered_ticket,
+    const SSLMessage &msg, const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  *out_session = nullptr;
+
+  CBS pre_shared_key;
+  *out_offered_ticket = ssl_client_hello_get_extension(
+      client_hello, &pre_shared_key, TLSEXT_TYPE_pre_shared_key);
+  if (!*out_offered_ticket) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  CBS ticket, binders;
+  uint32_t client_ticket_age;
+  if (!ssl_ext_pre_shared_key_parse_clienthello(
+          hs, &ticket, &binders, &client_ticket_age, out_alert, client_hello,
+          &pre_shared_key)) {
+    return ssl_ticket_aead_error;
+  }
+
+  // If the peer did not offer psk_dhe, ignore the resumption.
+  if (!hs->accept_psk_mode) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // TLS 1.3 session tickets are renewed separately as part of the
+  // NewSessionTicket.
+  bool unused_renew;
+  UniquePtr<SSL_SESSION> session;
+  enum ssl_ticket_aead_result_t ret =
+      ssl_process_ticket(hs, &session, &unused_renew, ticket, {});
+  switch (ret) {
+    case ssl_ticket_aead_success:
+      break;
+    case ssl_ticket_aead_error:
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return ret;
+    default:
+      return ret;
+  }
+
+  if (!ssl_session_is_resumable(hs, session.get()) ||
+      // Historically, some TLS 1.3 tickets were missing ticket_age_add.
+      !session->ticket_age_add_valid) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Recover the client ticket age and convert to seconds.
+  client_ticket_age -= session->ticket_age_add;
+  client_ticket_age /= 1000;
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // Compute the server ticket age in seconds.
+  assert(now.tv_sec >= session->time);
+  uint64_t server_ticket_age = now.tv_sec - session->time;
+
+  // To avoid overflowing |hs->ticket_age_skew|, we will not resume
+  // 68-year-old sessions.
+  if (server_ticket_age > INT32_MAX) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  *out_ticket_age_skew = static_cast<int32_t>(client_ticket_age) -
+                         static_cast<int32_t>(server_ticket_age);
+
+  // Check the PSK binder.
+  if (!tls13_verify_psk_binder(hs, session.get(), msg, &binders)) {
+    *out_alert = SSL_AD_DECRYPT_ERROR;
+    return ssl_ticket_aead_error;
+  }
+
+  *out_session = std::move(session);
+  return ssl_ticket_aead_success;
+}
+
+static enum ssl_hs_wait_t do_select_session(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  UniquePtr<SSL_SESSION> session;
+  bool offered_ticket = false;
+  switch (select_session(hs, &alert, &session, &ssl->s3->ticket_age_skew,
+                         &offered_ticket, msg, &client_hello)) {
+    case ssl_ticket_aead_ignore_ticket:
+      assert(!session);
+      if (!ssl->enable_early_data) {
+        ssl->s3->early_data_reason = ssl_early_data_disabled;
+      } else if (!offered_ticket) {
+        ssl->s3->early_data_reason = ssl_early_data_no_session_offered;
+      } else {
+        ssl->s3->early_data_reason = ssl_early_data_session_not_resumed;
+      }
+      if (!ssl_get_new_session(hs, 1 /* server */)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+      break;
+
+    case ssl_ticket_aead_success:
+      // Carry over authentication information from the previous handshake into
+      // a fresh session.
+      hs->new_session =
+          SSL_SESSION_dup(session.get(), SSL_SESSION_DUP_AUTH_ONLY);
+      if (hs->new_session == nullptr) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+
+      if (!ssl->enable_early_data) {
+        ssl->s3->early_data_reason = ssl_early_data_disabled;
+      } else if (session->ticket_max_early_data == 0) {
+        ssl->s3->early_data_reason = ssl_early_data_unsupported_for_session;
+      } else if (!hs->early_data_offered) {
+        ssl->s3->early_data_reason = ssl_early_data_peer_declined;
+      } else if (ssl->s3->channel_id_valid) {
+          // Channel ID is incompatible with 0-RTT.
+        ssl->s3->early_data_reason = ssl_early_data_channel_id;
+      } else if (ssl->s3->token_binding_negotiated) {
+          // Token Binding is incompatible with 0-RTT.
+        ssl->s3->early_data_reason = ssl_early_data_token_binding;
+      } else if (MakeConstSpan(ssl->s3->alpn_selected) != session->early_alpn) {
+        // The negotiated ALPN must match the one in the ticket.
+        ssl->s3->early_data_reason = ssl_early_data_alpn_mismatch;
+      } else if (ssl->s3->ticket_age_skew < -kMaxTicketAgeSkewSeconds ||
+                 kMaxTicketAgeSkewSeconds < ssl->s3->ticket_age_skew) {
+        ssl->s3->early_data_reason = ssl_early_data_ticket_age_skew;
+      } else {
+        ssl->s3->early_data_reason = ssl_early_data_accepted;
+        ssl->s3->early_data_accepted = true;
+      }
+
+      ssl->s3->session_reused = true;
+
+      // Resumption incorporates fresh key material, so refresh the timeout.
+      ssl_session_renew_timeout(ssl, hs->new_session.get(),
+                                ssl->session_ctx->session_psk_dhe_timeout);
+      break;
+
+    case ssl_ticket_aead_error:
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+
+    case ssl_ticket_aead_retry:
+      hs->tls13_state = state13_select_session;
+      return ssl_hs_pending_ticket;
+  }
+
+  // Record connection properties in the new session.
+  hs->new_session->cipher = hs->new_cipher;
+
+  // Store the initial negotiated ALPN in the session.
+  if (!hs->new_session->early_alpn.CopyFrom(ssl->s3->alpn_selected)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->ctx->dos_protection_cb != NULL &&
+      ssl->ctx->dos_protection_cb(&client_hello) == 0) {
+    // Connection rejected for DOS reasons.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  size_t hash_len = EVP_MD_size(
+      ssl_get_handshake_digest(ssl_protocol_version(ssl), hs->new_cipher));
+
+  // Set up the key schedule and incorporate the PSK into the running secret.
+  if (ssl->s3->session_reused) {
+    if (!tls13_init_key_schedule(
+            hs, MakeConstSpan(hs->new_session->master_key,
+                              hs->new_session->master_key_length))) {
+      return ssl_hs_error;
+    }
+  } else if (!tls13_init_key_schedule(hs, MakeConstSpan(kZeroes, hash_len))) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    if (!tls13_derive_early_secret(hs)) {
+      return ssl_hs_error;
+    }
+  } else if (hs->early_data_offered) {
+    ssl->s3->skip_early_data = true;
+  }
+
+  // Resolve ECDHE and incorporate it into the secret.
+  bool need_retry;
+  if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
+    if (need_retry) {
+      if (ssl->s3->early_data_accepted) {
+        ssl->s3->early_data_reason = ssl_early_data_hello_retry_request;
+        ssl->s3->early_data_accepted = false;
+      }
+      ssl->s3->skip_early_data = true;
+      ssl->method->next_message(ssl);
+      if (!hs->transcript.UpdateForHelloRetryRequest()) {
+        return ssl_hs_error;
+      }
+      hs->tls13_state = state13_send_hello_retry_request;
+      return ssl_hs_ok;
+    }
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_hello_retry_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+
+  ScopedCBB cbb;
+  CBB body, session_id, extensions;
+  uint16_t group_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, TLS1_2_VERSION) ||
+      !CBB_add_bytes(&body, kHelloRetryRequest, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0 /* no compression */) ||
+      !tls1_get_shared_group(hs, &group_id) ||
+      !CBB_add_u16_length_prefixed(&body, &extensions) ||
+      !CBB_add_u16(&extensions, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16(&extensions, 2 /* length */) ||
+      !CBB_add_u16(&extensions, ssl->version) ||
+      !CBB_add_u16(&extensions, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16(&extensions, 2 /* length */) ||
+      !CBB_add_u16(&extensions, group_id) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  ssl->s3->used_hello_retry_request = true;
+  hs->tls13_state = state13_read_second_client_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_second_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_HELLO)) {
+    return ssl_hs_error;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // We perform all our negotiation based on the first ClientHello (for
+  // consistency with what |select_certificate_cb| observed), which is in the
+  // transcript, so we can ignore most of this second one.
+  //
+  // We do, however, check the second PSK binder. This covers the client key
+  // share, in case we ever send half-RTT data (we currently do not). It is also
+  // a tricky computation, so we enforce the peer handled it correctly.
+  if (ssl->s3->session_reused) {
+    CBS pre_shared_key;
+    if (!ssl_client_hello_get_extension(&client_hello, &pre_shared_key,
+                                        TLSEXT_TYPE_pre_shared_key)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INCONSISTENT_CLIENT_HELLO);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    CBS ticket, binders;
+    uint32_t client_ticket_age;
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ssl_ext_pre_shared_key_parse_clienthello(
+            hs, &ticket, &binders, &client_ticket_age, &alert, &client_hello,
+            &pre_shared_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    // Note it is important that we do not obtain a new |SSL_SESSION| from
+    // |ticket|. We have already selected parameters based on the first
+    // ClientHello (in the transcript) and must not switch partway through.
+    if (!tls13_verify_psk_binder(hs, hs->new_session.get(), msg, &binders)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  bool need_retry;
+  if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
+    if (need_retry) {
+      // Only send one HelloRetryRequest.
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+    }
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Send a ServerHello.
+  ScopedCBB cbb;
+  CBB body, extensions, session_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, TLS1_2_VERSION) ||
+      !RAND_bytes(ssl->s3->server_random, sizeof(ssl->s3->server_random)) ||
+      !CBB_add_bytes(&body, ssl->s3->server_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0) ||
+      !CBB_add_u16_length_prefixed(&body, &extensions) ||
+      !ssl_ext_pre_shared_key_add_serverhello(hs, &extensions) ||
+      !ssl_ext_key_share_add_serverhello(hs, &extensions) ||
+      !ssl_ext_supported_versions_add_serverhello(hs, &extensions) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->used_hello_retry_request &&
+      !ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  // Derive and enable the handshake traffic secrets.
+  if (!tls13_derive_handshake_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                             hs->server_handshake_secret())) {
+    return ssl_hs_error;
+  }
+
+  // Send EncryptedExtensions.
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_ENCRYPTED_EXTENSIONS) ||
+      !ssl_add_serverhello_tlsext(hs, &body) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->session_reused) {
+    // Determine whether to request a client certificate.
+    hs->cert_request = !!(hs->config->verify_mode & SSL_VERIFY_PEER);
+    // Only request a certificate if Channel ID isn't negotiated.
+    if ((hs->config->verify_mode & SSL_VERIFY_PEER_IF_NO_OBC) &&
+        ssl->s3->channel_id_valid) {
+      hs->cert_request = false;
+    }
+  }
+
+  // Send a CertificateRequest, if necessary.
+  if (hs->cert_request) {
+    CBB cert_request_extensions, sigalg_contents, sigalgs_cbb;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_CERTIFICATE_REQUEST) ||
+        !CBB_add_u8(&body, 0 /* no certificate_request_context. */) ||
+        !CBB_add_u16_length_prefixed(&body, &cert_request_extensions) ||
+        !CBB_add_u16(&cert_request_extensions,
+                     TLSEXT_TYPE_signature_algorithms) ||
+        !CBB_add_u16_length_prefixed(&cert_request_extensions,
+                                     &sigalg_contents) ||
+        !CBB_add_u16_length_prefixed(&sigalg_contents, &sigalgs_cbb) ||
+        !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb)) {
+      return ssl_hs_error;
+    }
+
+    if (ssl_has_client_CAs(hs->config)) {
+      CBB ca_contents;
+      if (!CBB_add_u16(&cert_request_extensions,
+                       TLSEXT_TYPE_certificate_authorities) ||
+          !CBB_add_u16_length_prefixed(&cert_request_extensions,
+                                       &ca_contents) ||
+          !ssl_add_client_CA_list(hs, &ca_contents) ||
+          !CBB_flush(&cert_request_extensions)) {
+        return ssl_hs_error;
+      }
+    }
+
+    if (!ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Send the server Certificate message, if necessary.
+  if (!ssl->s3->session_reused) {
+    if (!ssl_has_certificate(hs)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_SET);
+      return ssl_hs_error;
+    }
+
+    if (!tls13_add_certificate(hs)) {
+      return ssl_hs_error;
+    }
+
+    hs->tls13_state = state13_send_server_certificate_verify;
+    return ssl_hs_ok;
+  }
+
+  hs->tls13_state = state13_send_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_certificate_verify(SSL_HANDSHAKE *hs) {
+  switch (tls13_add_certificate_verify(hs)) {
+    case ssl_private_key_success:
+      hs->tls13_state = state13_send_server_finished;
+      return ssl_hs_ok;
+
+    case ssl_private_key_retry:
+      hs->tls13_state = state13_send_server_certificate_verify;
+      return ssl_hs_private_key_operation;
+
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+  }
+
+  assert(0);
+  return ssl_hs_error;
+}
+
+static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!tls13_add_finished(hs) ||
+      // Update the secret to the master secret and derive traffic keys.
+      !tls13_advance_key_schedule(
+          hs, MakeConstSpan(kZeroes, hs->transcript.DigestLen())) ||
+      !tls13_derive_application_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                             hs->server_traffic_secret_0())) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    // We defer releasing the early traffic secret to QUIC to this point. First,
+    // the early traffic secret is derived before ECDHE, but ECDHE may later
+    // reject 0-RTT. We only release the secret after 0-RTT is fully resolved.
+    //
+    // Second, 0-RTT data is acknowledged with 1-RTT keys. Both are derived as
+    // part of the ServerHello flight, but future TLS extensions may insert an
+    // asynchronous point in the middle of this flight. We defer releasing the
+    // 0-RTT keys to ensure the QUIC implementation never installs read keys
+    // without the write keys to send the corresponding ACKs.
+    if (!tls13_set_early_secret_for_quic(hs)) {
+      return ssl_hs_error;
+    }
+
+    // If accepting 0-RTT, we send tickets half-RTT. This gets the tickets on
+    // the wire sooner and also avoids triggering a write on |SSL_read| when
+    // processing the client Finished. This requires computing the client
+    // Finished early. See RFC 8446, section 4.6.1.
+    static const uint8_t kEndOfEarlyData[4] = {SSL3_MT_END_OF_EARLY_DATA, 0,
+                                               0, 0};
+    if (ssl->quic_method == nullptr &&
+        !hs->transcript.Update(kEndOfEarlyData)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    size_t finished_len;
+    if (!tls13_finished_mac(hs, hs->expected_client_finished().data(),
+                            &finished_len, false /* client */)) {
+      return ssl_hs_error;
+    }
+
+    if (finished_len != hs->expected_client_finished().size()) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Feed the predicted Finished into the transcript. This allows us to derive
+    // the resumption secret early and send half-RTT tickets.
+    //
+    // TODO(davidben): This will need to be updated for DTLS 1.3.
+    assert(!SSL_is_dtls(hs->ssl));
+    assert(hs->expected_client_finished().size() <= 0xff);
+    uint8_t header[4] = {
+        SSL3_MT_FINISHED, 0, 0,
+        static_cast<uint8_t>(hs->expected_client_finished().size())};
+    bool unused_sent_tickets;
+    if (!hs->transcript.Update(header) ||
+        !hs->transcript.Update(hs->expected_client_finished()) ||
+        !tls13_derive_resumption_secret(hs) ||
+        !add_new_session_tickets(hs, &unused_sent_tickets)) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->tls13_state = state13_read_second_client_flight;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_second_client_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->early_data_accepted) {
+    // QUIC never receives handshake messages under 0-RTT keys.
+    if (ssl->quic_method == nullptr &&
+        !tls13_set_traffic_key(ssl, ssl_encryption_early_data, evp_aead_open,
+                               hs->early_traffic_secret())) {
+      return ssl_hs_error;
+    }
+    hs->can_early_write = true;
+    hs->can_early_read = true;
+    hs->in_early_data = true;
+  }
+
+  // QUIC doesn't use an EndOfEarlyData message (draft-ietf-quic-tls-22,
+  // section 8.3), so we switch to client_handshake_secret before the early
+  // return.
+  if (ssl->quic_method != nullptr) {
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+    hs->tls13_state = state13_read_client_certificate;
+    return ssl->s3->early_data_accepted ? ssl_hs_early_return : ssl_hs_ok;
+  }
+
+  hs->tls13_state = state13_process_end_of_early_data;
+  return ssl->s3->early_data_accepted ? ssl_hs_read_end_of_early_data
+                                      : ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_process_end_of_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // If early data was not accepted, the EndOfEarlyData will be in the discarded
+  // early data.
+  if (hs->ssl->s3->early_data_accepted) {
+    SSLMessage msg;
+    if (!ssl->method->get_message(ssl, &msg)) {
+      return ssl_hs_read_message;
+    }
+    if (!ssl_check_message_type(ssl, msg, SSL3_MT_END_OF_EARLY_DATA)) {
+      return ssl_hs_error;
+    }
+    if (CBS_len(&msg.body) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    ssl->method->next_message(ssl);
+  }
+  if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                             hs->client_handshake_secret())) {
+    return ssl_hs_error;
+  }
+  if (hs->handback) {
+    return ssl_hs_handback;
+  }
+  hs->tls13_state = state13_read_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!hs->cert_request) {
+    if (!ssl->s3->session_reused) {
+      // OpenSSL returns X509_V_OK when no certificates are requested. This is
+      // classed by them as a bug, but it's assumed by at least NGINX. (Only do
+      // this in full handshakes as resumptions should carry over the previous
+      // |verify_result|, though this is a no-op because servers do not
+      // implement the client's odd soft-fail mode.)
+      hs->new_session->verify_result = X509_V_OK;
+    }
+
+    // Skip this state.
+    hs->tls13_state = state13_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  const bool allow_anonymous =
+      (hs->config->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) == 0;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE) ||
+      !tls13_process_certificate(hs, msg, allow_anonymous) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate_verify(
+    SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    // Skip this state.
+    hs->tls13_state = state13_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state13_read_client_certificate_verify;
+      return ssl_hs_certificate_verify;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY) ||
+      !tls13_process_certificate_verify(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_channel_id;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl->s3->channel_id_valid) {
+    hs->tls13_state = state13_read_client_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CHANNEL_ID) ||
+      !tls1_verify_channel_id(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED) ||
+      // If early data was accepted, we've already computed the client Finished
+      // and derived the resumption secret.
+      !tls13_process_finished(hs, msg, ssl->s3->early_data_accepted) ||
+      // evp_aead_seal keys have already been switched.
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_open,
+                             hs->client_traffic_secret_0())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->early_data_accepted) {
+    if (!ssl_hash_message(hs, msg) ||
+        !tls13_derive_resumption_secret(hs)) {
+      return ssl_hs_error;
+    }
+
+    // We send post-handshake tickets as part of the handshake in 1-RTT.
+    hs->tls13_state = state13_send_new_session_ticket;
+  } else {
+    // We already sent half-RTT tickets.
+    hs->tls13_state = state13_done;
+  }
+
+  ssl->method->next_message(ssl);
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_new_session_ticket(SSL_HANDSHAKE *hs) {
+  bool sent_tickets;
+  if (!add_new_session_tickets(hs, &sent_tickets)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state13_done;
+  // In TLS 1.3, the NewSessionTicket isn't flushed until the server performs a
+  // write, to prevent a non-reading client from causing the server to hang in
+  // the case of a small server write buffer. Consumers which don't write data
+  // to the client will need to do a zero-byte write if they wish to flush the
+  // tickets.
+  if (hs->ssl->quic_method != nullptr && sent_tickets) {
+    return ssl_hs_flush;
+  }
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t tls13_server_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->tls13_state != state13_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum tls13_server_hs_state_t state =
+        static_cast<enum tls13_server_hs_state_t>(hs->tls13_state);
+    switch (state) {
+      case state13_select_parameters:
+        ret = do_select_parameters(hs);
+        break;
+      case state13_select_session:
+        ret = do_select_session(hs);
+        break;
+      case state13_send_hello_retry_request:
+        ret = do_send_hello_retry_request(hs);
+        break;
+      case state13_read_second_client_hello:
+        ret = do_read_second_client_hello(hs);
+        break;
+      case state13_send_server_hello:
+        ret = do_send_server_hello(hs);
+        break;
+      case state13_send_server_certificate_verify:
+        ret = do_send_server_certificate_verify(hs);
+        break;
+      case state13_send_server_finished:
+        ret = do_send_server_finished(hs);
+        break;
+      case state13_read_second_client_flight:
+        ret = do_read_second_client_flight(hs);
+        break;
+      case state13_process_end_of_early_data:
+        ret = do_process_end_of_early_data(hs);
+        break;
+      case state13_read_client_certificate:
+        ret = do_read_client_certificate(hs);
+        break;
+      case state13_read_client_certificate_verify:
+        ret = do_read_client_certificate_verify(hs);
+        break;
+      case state13_read_channel_id:
+        ret = do_read_channel_id(hs);
+        break;
+      case state13_read_client_finished:
+        ret = do_read_client_finished(hs);
+        break;
+      case state13_send_new_session_ticket:
+        ret = do_send_new_session_ticket(hs);
+        break;
+      case state13_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->tls13_state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_ACCEPT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  return ssl_hs_ok;
+}
+
+const char *tls13_server_handshake_state(SSL_HANDSHAKE *hs) {
+  enum tls13_server_hs_state_t state =
+      static_cast<enum tls13_server_hs_state_t>(hs->tls13_state);
+  switch (state) {
+    case state13_select_parameters:
+      return "TLS 1.3 server select_parameters";
+    case state13_select_session:
+      return "TLS 1.3 server select_session";
+    case state13_send_hello_retry_request:
+      return "TLS 1.3 server send_hello_retry_request";
+    case state13_read_second_client_hello:
+      return "TLS 1.3 server read_second_client_hello";
+    case state13_send_server_hello:
+      return "TLS 1.3 server send_server_hello";
+    case state13_send_server_certificate_verify:
+      return "TLS 1.3 server send_server_certificate_verify";
+    case state13_send_server_finished:
+      return "TLS 1.3 server send_server_finished";
+    case state13_read_second_client_flight:
+      return "TLS 1.3 server read_second_client_flight";
+    case state13_process_end_of_early_data:
+      return "TLS 1.3 server process_end_of_early_data";
+    case state13_read_client_certificate:
+      return "TLS 1.3 server read_client_certificate";
+    case state13_read_client_certificate_verify:
+      return "TLS 1.3 server read_client_certificate_verify";
+    case state13_read_channel_id:
+      return "TLS 1.3 server read_channel_id";
+    case state13_read_client_finished:
+      return "TLS 1.3 server read_client_finished";
+    case state13_send_new_session_ticket:
+      return "TLS 1.3 server send_new_session_ticket";
+    case state13_done:
+      return "TLS 1.3 server done";
+  }
+
+  return "TLS 1.3 server unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc.grpc_back
new file mode 100644
index 0000000..c6c496e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls13_server.cc.grpc_back	
@@ -0,0 +1,1066 @@
+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <tuple>
+
+#include <openssl/aead.h>
+#include <openssl/bytestring.h>
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/stack.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
+
+// Allow a minute of ticket age skew in either direction. This covers
+// transmission delays in ClientHello and NewSessionTicket, as well as
+// drift between client and server clock rate since the ticket was issued.
+// See RFC 8446, section 8.3.
+static const int32_t kMaxTicketAgeSkewSeconds = 60;
+
+static int resolve_ecdhe_secret(SSL_HANDSHAKE *hs, bool *out_need_retry,
+                                SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  *out_need_retry = false;
+
+  // We only support connections that include an ECDHE key exchange.
+  CBS key_share;
+  if (!ssl_client_hello_get_extension(client_hello, &key_share,
+                                      TLSEXT_TYPE_key_share)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
+    return 0;
+  }
+
+  bool found_key_share;
+  Array<uint8_t> dhe_secret;
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_ext_key_share_parse_clienthello(hs, &found_key_share, &dhe_secret,
+                                           &alert, &key_share)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return 0;
+  }
+
+  if (!found_key_share) {
+    *out_need_retry = true;
+    return 0;
+  }
+
+  return tls13_advance_key_schedule(hs, dhe_secret);
+}
+
+static int ssl_ext_supported_versions_add_serverhello(SSL_HANDSHAKE *hs,
+                                                      CBB *out) {
+  CBB contents;
+  if (!CBB_add_u16(out, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16_length_prefixed(out, &contents) ||
+      !CBB_add_u16(&contents, hs->ssl->version) ||
+      !CBB_flush(out)) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static const SSL_CIPHER *choose_tls13_cipher(
+    const SSL *ssl, const SSL_CLIENT_HELLO *client_hello, uint16_t group_id) {
+  CBS cipher_suites;
+  CBS_init(&cipher_suites, client_hello->cipher_suites,
+           client_hello->cipher_suites_len);
+
+  const uint16_t version = ssl_protocol_version(ssl);
+
+  return ssl_choose_tls13_cipher(cipher_suites, version, group_id);
+}
+
+static bool add_new_session_tickets(SSL_HANDSHAKE *hs, bool *out_sent_tickets) {
+  SSL *const ssl = hs->ssl;
+  if (// If the client doesn't accept resumption with PSK_DHE_KE, don't send a
+      // session ticket.
+      !hs->accept_psk_mode ||
+      // We only implement stateless resumption in TLS 1.3, so skip sending
+      // tickets if disabled.
+      (SSL_get_options(ssl) & SSL_OP_NO_TICKET)) {
+    *out_sent_tickets = false;
+    return true;
+  }
+
+  // TLS 1.3 recommends single-use tickets, so issue multiple tickets in case
+  // the client makes several connections before getting a renewal.
+  static const int kNumTickets = 2;
+
+  // Rebase the session timestamp so that it is measured from ticket
+  // issuance.
+  ssl_session_rebase_time(ssl, hs->new_session.get());
+
+  for (int i = 0; i < kNumTickets; i++) {
+    UniquePtr<SSL_SESSION> session(
+        SSL_SESSION_dup(hs->new_session.get(), SSL_SESSION_INCLUDE_NONAUTH));
+    if (!session) {
+      return false;
+    }
+
+    if (!RAND_bytes((uint8_t *)&session->ticket_age_add, 4)) {
+      return false;
+    }
+    session->ticket_age_add_valid = true;
+    if (ssl->enable_early_data) {
+      // QUIC does not use the max_early_data_size parameter and always sets it
+      // to a fixed value. See draft-ietf-quic-tls-22, section 4.5.
+      session->ticket_max_early_data =
+          ssl->quic_method != nullptr ? 0xffffffff : kMaxEarlyDataAccepted;
+    }
+
+    static_assert(kNumTickets < 256, "Too many tickets");
+    uint8_t nonce[] = {static_cast<uint8_t>(i)};
+
+    ScopedCBB cbb;
+    CBB body, nonce_cbb, ticket, extensions;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_NEW_SESSION_TICKET) ||
+        !CBB_add_u32(&body, session->timeout) ||
+        !CBB_add_u32(&body, session->ticket_age_add) ||
+        !CBB_add_u8_length_prefixed(&body, &nonce_cbb) ||
+        !CBB_add_bytes(&nonce_cbb, nonce, sizeof(nonce)) ||
+        !CBB_add_u16_length_prefixed(&body, &ticket) ||
+        !tls13_derive_session_psk(session.get(), nonce) ||
+        !ssl_encrypt_ticket(hs, &ticket, session.get()) ||
+        !CBB_add_u16_length_prefixed(&body, &extensions)) {
+      return false;
+    }
+
+    if (ssl->enable_early_data) {
+      CBB early_data;
+      if (!CBB_add_u16(&extensions, TLSEXT_TYPE_early_data) ||
+          !CBB_add_u16_length_prefixed(&extensions, &early_data) ||
+          !CBB_add_u32(&early_data, session->ticket_max_early_data) ||
+          !CBB_flush(&extensions)) {
+        return false;
+      }
+    }
+
+    // Add a fake extension. See draft-davidben-tls-grease-01.
+    if (!CBB_add_u16(&extensions,
+                     ssl_get_grease_value(hs, ssl_grease_ticket_extension)) ||
+        !CBB_add_u16(&extensions, 0 /* empty */)) {
+      return false;
+    }
+
+    if (!ssl_add_message_cbb(ssl, cbb.get())) {
+      return false;
+    }
+  }
+
+  *out_sent_tickets = true;
+  return true;
+}
+
+static enum ssl_hs_wait_t do_select_parameters(SSL_HANDSHAKE *hs) {
+  // At this point, most ClientHello extensions have already been processed by
+  // the common handshake logic. Resolve the remaining non-PSK parameters.
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  OPENSSL_memcpy(hs->session_id, client_hello.session_id,
+                 client_hello.session_id_len);
+  hs->session_id_len = client_hello.session_id_len;
+
+  uint16_t group_id;
+  if (!tls1_get_shared_group(hs, &group_id)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_GROUP);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // Negotiate the cipher suite.
+  hs->new_cipher = choose_tls13_cipher(ssl, &client_hello, group_id);
+  if (hs->new_cipher == NULL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_CIPHER);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+    return ssl_hs_error;
+  }
+
+  // HTTP/2 negotiation depends on the cipher suite, so ALPN negotiation was
+  // deferred. Complete it now.
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  if (!ssl_negotiate_alpn(hs, &alert, &client_hello)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+    return ssl_hs_error;
+  }
+
+  // The PRF hash is now known. Set up the key schedule and hash the
+  // ClientHello.
+  if (!hs->transcript.InitHash(ssl_protocol_version(ssl), hs->new_cipher)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state13_select_session;
+  return ssl_hs_ok;
+}
+
+static enum ssl_ticket_aead_result_t select_session(
+    SSL_HANDSHAKE *hs, uint8_t *out_alert, UniquePtr<SSL_SESSION> *out_session,
+    int32_t *out_ticket_age_skew, bool *out_offered_ticket,
+    const SSLMessage &msg, const SSL_CLIENT_HELLO *client_hello) {
+  SSL *const ssl = hs->ssl;
+  *out_session = nullptr;
+
+  CBS pre_shared_key;
+  *out_offered_ticket = ssl_client_hello_get_extension(
+      client_hello, &pre_shared_key, TLSEXT_TYPE_pre_shared_key);
+  if (!*out_offered_ticket) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  CBS ticket, binders;
+  uint32_t client_ticket_age;
+  if (!ssl_ext_pre_shared_key_parse_clienthello(
+          hs, &ticket, &binders, &client_ticket_age, out_alert, client_hello,
+          &pre_shared_key)) {
+    return ssl_ticket_aead_error;
+  }
+
+  // If the peer did not offer psk_dhe, ignore the resumption.
+  if (!hs->accept_psk_mode) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // TLS 1.3 session tickets are renewed separately as part of the
+  // NewSessionTicket.
+  bool unused_renew;
+  UniquePtr<SSL_SESSION> session;
+  enum ssl_ticket_aead_result_t ret =
+      ssl_process_ticket(hs, &session, &unused_renew, ticket, {});
+  switch (ret) {
+    case ssl_ticket_aead_success:
+      break;
+    case ssl_ticket_aead_error:
+      *out_alert = SSL_AD_INTERNAL_ERROR;
+      return ret;
+    default:
+      return ret;
+  }
+
+  if (!ssl_session_is_resumable(hs, session.get()) ||
+      // Historically, some TLS 1.3 tickets were missing ticket_age_add.
+      !session->ticket_age_add_valid) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  // Recover the client ticket age and convert to seconds.
+  client_ticket_age -= session->ticket_age_add;
+  client_ticket_age /= 1000;
+
+  struct OPENSSL_timeval now;
+  ssl_get_current_time(ssl, &now);
+
+  // Compute the server ticket age in seconds.
+  assert(now.tv_sec >= session->time);
+  uint64_t server_ticket_age = now.tv_sec - session->time;
+
+  // To avoid overflowing |hs->ticket_age_skew|, we will not resume
+  // 68-year-old sessions.
+  if (server_ticket_age > INT32_MAX) {
+    return ssl_ticket_aead_ignore_ticket;
+  }
+
+  *out_ticket_age_skew = static_cast<int32_t>(client_ticket_age) -
+                         static_cast<int32_t>(server_ticket_age);
+
+  // Check the PSK binder.
+  if (!tls13_verify_psk_binder(hs, session.get(), msg, &binders)) {
+    *out_alert = SSL_AD_DECRYPT_ERROR;
+    return ssl_ticket_aead_error;
+  }
+
+  *out_session = std::move(session);
+  return ssl_ticket_aead_success;
+}
+
+static enum ssl_hs_wait_t do_select_session(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  uint8_t alert = SSL_AD_DECODE_ERROR;
+  UniquePtr<SSL_SESSION> session;
+  bool offered_ticket = false;
+  switch (select_session(hs, &alert, &session, &ssl->s3->ticket_age_skew,
+                         &offered_ticket, msg, &client_hello)) {
+    case ssl_ticket_aead_ignore_ticket:
+      assert(!session);
+      if (!ssl->enable_early_data) {
+        ssl->s3->early_data_reason = ssl_early_data_disabled;
+      } else if (!offered_ticket) {
+        ssl->s3->early_data_reason = ssl_early_data_no_session_offered;
+      } else {
+        ssl->s3->early_data_reason = ssl_early_data_session_not_resumed;
+      }
+      if (!ssl_get_new_session(hs, 1 /* server */)) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+      break;
+
+    case ssl_ticket_aead_success:
+      // Carry over authentication information from the previous handshake into
+      // a fresh session.
+      hs->new_session =
+          SSL_SESSION_dup(session.get(), SSL_SESSION_DUP_AUTH_ONLY);
+      if (hs->new_session == nullptr) {
+        ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+        return ssl_hs_error;
+      }
+
+      if (!ssl->enable_early_data) {
+        ssl->s3->early_data_reason = ssl_early_data_disabled;
+      } else if (session->ticket_max_early_data == 0) {
+        ssl->s3->early_data_reason = ssl_early_data_unsupported_for_session;
+      } else if (!hs->early_data_offered) {
+        ssl->s3->early_data_reason = ssl_early_data_peer_declined;
+      } else if (ssl->s3->channel_id_valid) {
+          // Channel ID is incompatible with 0-RTT.
+        ssl->s3->early_data_reason = ssl_early_data_channel_id;
+      } else if (ssl->s3->token_binding_negotiated) {
+          // Token Binding is incompatible with 0-RTT.
+        ssl->s3->early_data_reason = ssl_early_data_token_binding;
+      } else if (MakeConstSpan(ssl->s3->alpn_selected) != session->early_alpn) {
+        // The negotiated ALPN must match the one in the ticket.
+        ssl->s3->early_data_reason = ssl_early_data_alpn_mismatch;
+      } else if (ssl->s3->ticket_age_skew < -kMaxTicketAgeSkewSeconds ||
+                 kMaxTicketAgeSkewSeconds < ssl->s3->ticket_age_skew) {
+        ssl->s3->early_data_reason = ssl_early_data_ticket_age_skew;
+      } else {
+        ssl->s3->early_data_reason = ssl_early_data_accepted;
+        ssl->s3->early_data_accepted = true;
+      }
+
+      ssl->s3->session_reused = true;
+
+      // Resumption incorporates fresh key material, so refresh the timeout.
+      ssl_session_renew_timeout(ssl, hs->new_session.get(),
+                                ssl->session_ctx->session_psk_dhe_timeout);
+      break;
+
+    case ssl_ticket_aead_error:
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+
+    case ssl_ticket_aead_retry:
+      hs->tls13_state = state13_select_session;
+      return ssl_hs_pending_ticket;
+  }
+
+  // Record connection properties in the new session.
+  hs->new_session->cipher = hs->new_cipher;
+
+  // Store the initial negotiated ALPN in the session.
+  if (!hs->new_session->early_alpn.CopyFrom(ssl->s3->alpn_selected)) {
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  if (ssl->ctx->dos_protection_cb != NULL &&
+      ssl->ctx->dos_protection_cb(&client_hello) == 0) {
+    // Connection rejected for DOS reasons.
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+    return ssl_hs_error;
+  }
+
+  size_t hash_len = EVP_MD_size(
+      ssl_get_handshake_digest(ssl_protocol_version(ssl), hs->new_cipher));
+
+  // Set up the key schedule and incorporate the PSK into the running secret.
+  if (ssl->s3->session_reused) {
+    if (!tls13_init_key_schedule(
+            hs, MakeConstSpan(hs->new_session->master_key,
+                              hs->new_session->master_key_length))) {
+      return ssl_hs_error;
+    }
+  } else if (!tls13_init_key_schedule(hs, MakeConstSpan(kZeroes, hash_len))) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    if (!tls13_derive_early_secret(hs)) {
+      return ssl_hs_error;
+    }
+  } else if (hs->early_data_offered) {
+    ssl->s3->skip_early_data = true;
+  }
+
+  // Resolve ECDHE and incorporate it into the secret.
+  bool need_retry;
+  if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
+    if (need_retry) {
+      if (ssl->s3->early_data_accepted) {
+        ssl->s3->early_data_reason = ssl_early_data_hello_retry_request;
+        ssl->s3->early_data_accepted = false;
+      }
+      ssl->s3->skip_early_data = true;
+      ssl->method->next_message(ssl);
+      if (!hs->transcript.UpdateForHelloRetryRequest()) {
+        return ssl_hs_error;
+      }
+      hs->tls13_state = state13_send_hello_retry_request;
+      return ssl_hs_ok;
+    }
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_hello_retry_request(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+
+  ScopedCBB cbb;
+  CBB body, session_id, extensions;
+  uint16_t group_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, TLS1_2_VERSION) ||
+      !CBB_add_bytes(&body, kHelloRetryRequest, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0 /* no compression */) ||
+      !tls1_get_shared_group(hs, &group_id) ||
+      !CBB_add_u16_length_prefixed(&body, &extensions) ||
+      !CBB_add_u16(&extensions, TLSEXT_TYPE_supported_versions) ||
+      !CBB_add_u16(&extensions, 2 /* length */) ||
+      !CBB_add_u16(&extensions, ssl->version) ||
+      !CBB_add_u16(&extensions, TLSEXT_TYPE_key_share) ||
+      !CBB_add_u16(&extensions, 2 /* length */) ||
+      !CBB_add_u16(&extensions, group_id) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  ssl->s3->used_hello_retry_request = true;
+  hs->tls13_state = state13_read_second_client_hello;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_second_client_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CLIENT_HELLO)) {
+    return ssl_hs_error;
+  }
+  SSL_CLIENT_HELLO client_hello;
+  if (!ssl_client_hello_init(ssl, &client_hello, msg)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+    return ssl_hs_error;
+  }
+
+  // We perform all our negotiation based on the first ClientHello (for
+  // consistency with what |select_certificate_cb| observed), which is in the
+  // transcript, so we can ignore most of this second one.
+  //
+  // We do, however, check the second PSK binder. This covers the client key
+  // share, in case we ever send half-RTT data (we currently do not). It is also
+  // a tricky computation, so we enforce the peer handled it correctly.
+  if (ssl->s3->session_reused) {
+    CBS pre_shared_key;
+    if (!ssl_client_hello_get_extension(&client_hello, &pre_shared_key,
+                                        TLSEXT_TYPE_pre_shared_key)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INCONSISTENT_CLIENT_HELLO);
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      return ssl_hs_error;
+    }
+
+    CBS ticket, binders;
+    uint32_t client_ticket_age;
+    uint8_t alert = SSL_AD_DECODE_ERROR;
+    if (!ssl_ext_pre_shared_key_parse_clienthello(
+            hs, &ticket, &binders, &client_ticket_age, &alert, &client_hello,
+            &pre_shared_key)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, alert);
+      return ssl_hs_error;
+    }
+
+    // Note it is important that we do not obtain a new |SSL_SESSION| from
+    // |ticket|. We have already selected parameters based on the first
+    // ClientHello (in the transcript) and must not switch partway through.
+    if (!tls13_verify_psk_binder(hs, hs->new_session.get(), msg, &binders)) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
+      return ssl_hs_error;
+    }
+  }
+
+  bool need_retry;
+  if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
+    if (need_retry) {
+      // Only send one HelloRetryRequest.
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CURVE);
+    }
+    return ssl_hs_error;
+  }
+
+  if (!ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_send_server_hello;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_hello(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+
+  // Send a ServerHello.
+  ScopedCBB cbb;
+  CBB body, extensions, session_id;
+  if (!ssl->method->init_message(ssl, cbb.get(), &body, SSL3_MT_SERVER_HELLO) ||
+      !CBB_add_u16(&body, TLS1_2_VERSION) ||
+      !RAND_bytes(ssl->s3->server_random, sizeof(ssl->s3->server_random)) ||
+      !CBB_add_bytes(&body, ssl->s3->server_random, SSL3_RANDOM_SIZE) ||
+      !CBB_add_u8_length_prefixed(&body, &session_id) ||
+      !CBB_add_bytes(&session_id, hs->session_id, hs->session_id_len) ||
+      !CBB_add_u16(&body, ssl_cipher_get_value(hs->new_cipher)) ||
+      !CBB_add_u8(&body, 0) ||
+      !CBB_add_u16_length_prefixed(&body, &extensions) ||
+      !ssl_ext_pre_shared_key_add_serverhello(hs, &extensions) ||
+      !ssl_ext_key_share_add_serverhello(hs, &extensions) ||
+      !ssl_ext_supported_versions_add_serverhello(hs, &extensions) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->used_hello_retry_request &&
+      !ssl->method->add_change_cipher_spec(ssl)) {
+    return ssl_hs_error;
+  }
+
+  // Derive and enable the handshake traffic secrets.
+  if (!tls13_derive_handshake_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_seal,
+                             hs->server_handshake_secret())) {
+    return ssl_hs_error;
+  }
+
+  // Send EncryptedExtensions.
+  if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                 SSL3_MT_ENCRYPTED_EXTENSIONS) ||
+      !ssl_add_serverhello_tlsext(hs, &body) ||
+      !ssl_add_message_cbb(ssl, cbb.get())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->session_reused) {
+    // Determine whether to request a client certificate.
+    hs->cert_request = !!(hs->config->verify_mode & SSL_VERIFY_PEER);
+    // Only request a certificate if Channel ID isn't negotiated.
+    if ((hs->config->verify_mode & SSL_VERIFY_PEER_IF_NO_OBC) &&
+        ssl->s3->channel_id_valid) {
+      hs->cert_request = false;
+    }
+  }
+
+  // Send a CertificateRequest, if necessary.
+  if (hs->cert_request) {
+    CBB cert_request_extensions, sigalg_contents, sigalgs_cbb;
+    if (!ssl->method->init_message(ssl, cbb.get(), &body,
+                                   SSL3_MT_CERTIFICATE_REQUEST) ||
+        !CBB_add_u8(&body, 0 /* no certificate_request_context. */) ||
+        !CBB_add_u16_length_prefixed(&body, &cert_request_extensions) ||
+        !CBB_add_u16(&cert_request_extensions,
+                     TLSEXT_TYPE_signature_algorithms) ||
+        !CBB_add_u16_length_prefixed(&cert_request_extensions,
+                                     &sigalg_contents) ||
+        !CBB_add_u16_length_prefixed(&sigalg_contents, &sigalgs_cbb) ||
+        !tls12_add_verify_sigalgs(ssl, &sigalgs_cbb)) {
+      return ssl_hs_error;
+    }
+
+    if (ssl_has_client_CAs(hs->config)) {
+      CBB ca_contents;
+      if (!CBB_add_u16(&cert_request_extensions,
+                       TLSEXT_TYPE_certificate_authorities) ||
+          !CBB_add_u16_length_prefixed(&cert_request_extensions,
+                                       &ca_contents) ||
+          !ssl_add_client_CA_list(hs, &ca_contents) ||
+          !CBB_flush(&cert_request_extensions)) {
+        return ssl_hs_error;
+      }
+    }
+
+    if (!ssl_add_message_cbb(ssl, cbb.get())) {
+      return ssl_hs_error;
+    }
+  }
+
+  // Send the server Certificate message, if necessary.
+  if (!ssl->s3->session_reused) {
+    if (!ssl_has_certificate(hs)) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_NO_CERTIFICATE_SET);
+      return ssl_hs_error;
+    }
+
+    if (!tls13_add_certificate(hs)) {
+      return ssl_hs_error;
+    }
+
+    hs->tls13_state = state13_send_server_certificate_verify;
+    return ssl_hs_ok;
+  }
+
+  hs->tls13_state = state13_send_server_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_server_certificate_verify(SSL_HANDSHAKE *hs) {
+  switch (tls13_add_certificate_verify(hs)) {
+    case ssl_private_key_success:
+      hs->tls13_state = state13_send_server_finished;
+      return ssl_hs_ok;
+
+    case ssl_private_key_retry:
+      hs->tls13_state = state13_send_server_certificate_verify;
+      return ssl_hs_private_key_operation;
+
+    case ssl_private_key_failure:
+      return ssl_hs_error;
+  }
+
+  assert(0);
+  return ssl_hs_error;
+}
+
+static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!tls13_add_finished(hs) ||
+      // Update the secret to the master secret and derive traffic keys.
+      !tls13_advance_key_schedule(
+          hs, MakeConstSpan(kZeroes, hs->transcript.DigestLen())) ||
+      !tls13_derive_application_secrets(hs) ||
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_seal,
+                             hs->server_traffic_secret_0())) {
+    return ssl_hs_error;
+  }
+
+  if (ssl->s3->early_data_accepted) {
+    // We defer releasing the early traffic secret to QUIC to this point. First,
+    // the early traffic secret is derived before ECDHE, but ECDHE may later
+    // reject 0-RTT. We only release the secret after 0-RTT is fully resolved.
+    //
+    // Second, 0-RTT data is acknowledged with 1-RTT keys. Both are derived as
+    // part of the ServerHello flight, but future TLS extensions may insert an
+    // asynchronous point in the middle of this flight. We defer releasing the
+    // 0-RTT keys to ensure the QUIC implementation never installs read keys
+    // without the write keys to send the corresponding ACKs.
+    if (!tls13_set_early_secret_for_quic(hs)) {
+      return ssl_hs_error;
+    }
+
+    // If accepting 0-RTT, we send tickets half-RTT. This gets the tickets on
+    // the wire sooner and also avoids triggering a write on |SSL_read| when
+    // processing the client Finished. This requires computing the client
+    // Finished early. See RFC 8446, section 4.6.1.
+    static const uint8_t kEndOfEarlyData[4] = {SSL3_MT_END_OF_EARLY_DATA, 0,
+                                               0, 0};
+    if (ssl->quic_method == nullptr &&
+        !hs->transcript.Update(kEndOfEarlyData)) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    size_t finished_len;
+    if (!tls13_finished_mac(hs, hs->expected_client_finished().data(),
+                            &finished_len, false /* client */)) {
+      return ssl_hs_error;
+    }
+
+    if (finished_len != hs->expected_client_finished().size()) {
+      OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+      return ssl_hs_error;
+    }
+
+    // Feed the predicted Finished into the transcript. This allows us to derive
+    // the resumption secret early and send half-RTT tickets.
+    //
+    // TODO(davidben): This will need to be updated for DTLS 1.3.
+    assert(!SSL_is_dtls(hs->ssl));
+    assert(hs->expected_client_finished().size() <= 0xff);
+    uint8_t header[4] = {
+        SSL3_MT_FINISHED, 0, 0,
+        static_cast<uint8_t>(hs->expected_client_finished().size())};
+    bool unused_sent_tickets;
+    if (!hs->transcript.Update(header) ||
+        !hs->transcript.Update(hs->expected_client_finished()) ||
+        !tls13_derive_resumption_secret(hs) ||
+        !add_new_session_tickets(hs, &unused_sent_tickets)) {
+      return ssl_hs_error;
+    }
+  }
+
+  hs->tls13_state = state13_read_second_client_flight;
+  return ssl_hs_flush;
+}
+
+static enum ssl_hs_wait_t do_read_second_client_flight(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (ssl->s3->early_data_accepted) {
+    // QUIC never receives handshake messages under 0-RTT keys.
+    if (ssl->quic_method == nullptr &&
+        !tls13_set_traffic_key(ssl, ssl_encryption_early_data, evp_aead_open,
+                               hs->early_traffic_secret())) {
+      return ssl_hs_error;
+    }
+    hs->can_early_write = true;
+    hs->can_early_read = true;
+    hs->in_early_data = true;
+  }
+
+  // QUIC doesn't use an EndOfEarlyData message (draft-ietf-quic-tls-22,
+  // section 8.3), so we switch to client_handshake_secret before the early
+  // return.
+  if (ssl->quic_method != nullptr) {
+    if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                               hs->client_handshake_secret())) {
+      return ssl_hs_error;
+    }
+    hs->tls13_state = state13_read_client_certificate;
+    return ssl->s3->early_data_accepted ? ssl_hs_early_return : ssl_hs_ok;
+  }
+
+  hs->tls13_state = state13_process_end_of_early_data;
+  return ssl->s3->early_data_accepted ? ssl_hs_read_end_of_early_data
+                                      : ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_process_end_of_early_data(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  // If early data was not accepted, the EndOfEarlyData will be in the discarded
+  // early data.
+  if (hs->ssl->s3->early_data_accepted) {
+    SSLMessage msg;
+    if (!ssl->method->get_message(ssl, &msg)) {
+      return ssl_hs_read_message;
+    }
+    if (!ssl_check_message_type(ssl, msg, SSL3_MT_END_OF_EARLY_DATA)) {
+      return ssl_hs_error;
+    }
+    if (CBS_len(&msg.body) != 0) {
+      ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
+      OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
+      return ssl_hs_error;
+    }
+    ssl->method->next_message(ssl);
+  }
+  if (!tls13_set_traffic_key(ssl, ssl_encryption_handshake, evp_aead_open,
+                             hs->client_handshake_secret())) {
+    return ssl_hs_error;
+  }
+  if (hs->handback) {
+    return ssl_hs_handback;
+  }
+  hs->tls13_state = state13_read_client_certificate;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!hs->cert_request) {
+    if (!ssl->s3->session_reused) {
+      // OpenSSL returns X509_V_OK when no certificates are requested. This is
+      // classed by them as a bug, but it's assumed by at least NGINX. (Only do
+      // this in full handshakes as resumptions should carry over the previous
+      // |verify_result|, though this is a no-op because servers do not
+      // implement the client's odd soft-fail mode.)
+      hs->new_session->verify_result = X509_V_OK;
+    }
+
+    // Skip this state.
+    hs->tls13_state = state13_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  const bool allow_anonymous =
+      (hs->config->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) == 0;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE) ||
+      !tls13_process_certificate(hs, msg, allow_anonymous) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_client_certificate_verify;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_certificate_verify(
+    SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (sk_CRYPTO_BUFFER_num(hs->new_session->certs.get()) == 0) {
+    // Skip this state.
+    hs->tls13_state = state13_read_channel_id;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+
+  switch (ssl_verify_peer_cert(hs)) {
+    case ssl_verify_ok:
+      break;
+    case ssl_verify_invalid:
+      return ssl_hs_error;
+    case ssl_verify_retry:
+      hs->tls13_state = state13_read_client_certificate_verify;
+      return ssl_hs_certificate_verify;
+  }
+
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CERTIFICATE_VERIFY) ||
+      !tls13_process_certificate_verify(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_channel_id;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_channel_id(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  if (!ssl->s3->channel_id_valid) {
+    hs->tls13_state = state13_read_client_finished;
+    return ssl_hs_ok;
+  }
+
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_CHANNEL_ID) ||
+      !tls1_verify_channel_id(hs, msg) ||
+      !ssl_hash_message(hs, msg)) {
+    return ssl_hs_error;
+  }
+
+  ssl->method->next_message(ssl);
+  hs->tls13_state = state13_read_client_finished;
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_read_client_finished(SSL_HANDSHAKE *hs) {
+  SSL *const ssl = hs->ssl;
+  SSLMessage msg;
+  if (!ssl->method->get_message(ssl, &msg)) {
+    return ssl_hs_read_message;
+  }
+  if (!ssl_check_message_type(ssl, msg, SSL3_MT_FINISHED) ||
+      // If early data was accepted, we've already computed the client Finished
+      // and derived the resumption secret.
+      !tls13_process_finished(hs, msg, ssl->s3->early_data_accepted) ||
+      // evp_aead_seal keys have already been switched.
+      !tls13_set_traffic_key(ssl, ssl_encryption_application, evp_aead_open,
+                             hs->client_traffic_secret_0())) {
+    return ssl_hs_error;
+  }
+
+  if (!ssl->s3->early_data_accepted) {
+    if (!ssl_hash_message(hs, msg) ||
+        !tls13_derive_resumption_secret(hs)) {
+      return ssl_hs_error;
+    }
+
+    // We send post-handshake tickets as part of the handshake in 1-RTT.
+    hs->tls13_state = state13_send_new_session_ticket;
+  } else {
+    // We already sent half-RTT tickets.
+    hs->tls13_state = state13_done;
+  }
+
+  ssl->method->next_message(ssl);
+  return ssl_hs_ok;
+}
+
+static enum ssl_hs_wait_t do_send_new_session_ticket(SSL_HANDSHAKE *hs) {
+  bool sent_tickets;
+  if (!add_new_session_tickets(hs, &sent_tickets)) {
+    return ssl_hs_error;
+  }
+
+  hs->tls13_state = state13_done;
+  // In TLS 1.3, the NewSessionTicket isn't flushed until the server performs a
+  // write, to prevent a non-reading client from causing the server to hang in
+  // the case of a small server write buffer. Consumers which don't write data
+  // to the client will need to do a zero-byte write if they wish to flush the
+  // tickets.
+  if (hs->ssl->quic_method != nullptr && sent_tickets) {
+    return ssl_hs_flush;
+  }
+  return ssl_hs_ok;
+}
+
+enum ssl_hs_wait_t tls13_server_handshake(SSL_HANDSHAKE *hs) {
+  while (hs->tls13_state != state13_done) {
+    enum ssl_hs_wait_t ret = ssl_hs_error;
+    enum tls13_server_hs_state_t state =
+        static_cast<enum tls13_server_hs_state_t>(hs->tls13_state);
+    switch (state) {
+      case state13_select_parameters:
+        ret = do_select_parameters(hs);
+        break;
+      case state13_select_session:
+        ret = do_select_session(hs);
+        break;
+      case state13_send_hello_retry_request:
+        ret = do_send_hello_retry_request(hs);
+        break;
+      case state13_read_second_client_hello:
+        ret = do_read_second_client_hello(hs);
+        break;
+      case state13_send_server_hello:
+        ret = do_send_server_hello(hs);
+        break;
+      case state13_send_server_certificate_verify:
+        ret = do_send_server_certificate_verify(hs);
+        break;
+      case state13_send_server_finished:
+        ret = do_send_server_finished(hs);
+        break;
+      case state13_read_second_client_flight:
+        ret = do_read_second_client_flight(hs);
+        break;
+      case state13_process_end_of_early_data:
+        ret = do_process_end_of_early_data(hs);
+        break;
+      case state13_read_client_certificate:
+        ret = do_read_client_certificate(hs);
+        break;
+      case state13_read_client_certificate_verify:
+        ret = do_read_client_certificate_verify(hs);
+        break;
+      case state13_read_channel_id:
+        ret = do_read_channel_id(hs);
+        break;
+      case state13_read_client_finished:
+        ret = do_read_client_finished(hs);
+        break;
+      case state13_send_new_session_ticket:
+        ret = do_send_new_session_ticket(hs);
+        break;
+      case state13_done:
+        ret = ssl_hs_ok;
+        break;
+    }
+
+    if (hs->tls13_state != state) {
+      ssl_do_info_callback(hs->ssl, SSL_CB_ACCEPT_LOOP, 1);
+    }
+
+    if (ret != ssl_hs_ok) {
+      return ret;
+    }
+  }
+
+  return ssl_hs_ok;
+}
+
+const char *tls13_server_handshake_state(SSL_HANDSHAKE *hs) {
+  enum tls13_server_hs_state_t state =
+      static_cast<enum tls13_server_hs_state_t>(hs->tls13_state);
+  switch (state) {
+    case state13_select_parameters:
+      return "TLS 1.3 server select_parameters";
+    case state13_select_session:
+      return "TLS 1.3 server select_session";
+    case state13_send_hello_retry_request:
+      return "TLS 1.3 server send_hello_retry_request";
+    case state13_read_second_client_hello:
+      return "TLS 1.3 server read_second_client_hello";
+    case state13_send_server_hello:
+      return "TLS 1.3 server send_server_hello";
+    case state13_send_server_certificate_verify:
+      return "TLS 1.3 server send_server_certificate_verify";
+    case state13_send_server_finished:
+      return "TLS 1.3 server send_server_finished";
+    case state13_read_second_client_flight:
+      return "TLS 1.3 server read_second_client_flight";
+    case state13_process_end_of_early_data:
+      return "TLS 1.3 server process_end_of_early_data";
+    case state13_read_client_certificate:
+      return "TLS 1.3 server read_client_certificate";
+    case state13_read_client_certificate_verify:
+      return "TLS 1.3 server read_client_certificate_verify";
+    case state13_read_channel_id:
+      return "TLS 1.3 server read_channel_id";
+    case state13_read_client_finished:
+      return "TLS 1.3 server read_client_finished";
+    case state13_send_new_session_ticket:
+      return "TLS 1.3 server send_new_session_ticket";
+    case state13_done:
+      return "TLS 1.3 server done";
+  }
+
+  return "TLS 1.3 server unknown";
+}
+
+BSSL_NAMESPACE_END
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc
new file mode 100644
index 0000000..15f1d3e
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc	
@@ -0,0 +1,279 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/err.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static void ssl3_on_handshake_complete(SSL *ssl) {
+  // The handshake should have released its final message.
+  assert(!ssl->s3->has_message);
+
+  // During the handshake, |hs_buf| is retained. Release if it there is no
+  // excess in it. There may be excess left if there server sent Finished and
+  // HelloRequest in the same record.
+  //
+  // TODO(davidben): SChannel does not support this. Reject this case.
+  if (ssl->s3->hs_buf && ssl->s3->hs_buf->length == 0) {
+    ssl->s3->hs_buf.reset();
+  }
+}
+
+static bool ssl3_set_read_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  // Cipher changes are forbidden if the current epoch has leftover data.
+  if (tls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return false;
+  }
+
+  OPENSSL_memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence));
+  ssl->s3->aead_read_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static bool ssl3_set_write_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return false;
+  }
+
+  OPENSSL_memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence));
+  ssl->s3->aead_write_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static const SSL_PROTOCOL_METHOD kTLSProtocolMethod = {
+    false /* is_dtls */,
+    ssl3_new,
+    ssl3_free,
+    ssl3_get_message,
+    ssl3_next_message,
+    ssl3_open_handshake,
+    ssl3_open_change_cipher_spec,
+    ssl3_open_app_data,
+    ssl3_write_app_data,
+    ssl3_dispatch_alert,
+    ssl3_init_message,
+    ssl3_finish_message,
+    ssl3_add_message,
+    ssl3_add_change_cipher_spec,
+    ssl3_flush_flight,
+    ssl3_on_handshake_complete,
+    ssl3_set_read_state,
+    ssl3_set_write_state,
+};
+
+static bool ssl_noop_x509_check_client_CA_names(
+    STACK_OF(CRYPTO_BUFFER) *names) {
+  return true;
+}
+
+static void ssl_noop_x509_clear(CERT *cert) {}
+static void ssl_noop_x509_free(CERT *cert) {}
+static void ssl_noop_x509_dup(CERT *new_cert, const CERT *cert) {}
+static void ssl_noop_x509_flush_cached_leaf(CERT *cert) {}
+static void ssl_noop_x509_flush_cached_chain(CERT *cert) {}
+static bool ssl_noop_x509_session_cache_objects(SSL_SESSION *sess) {
+  return true;
+}
+static bool ssl_noop_x509_session_dup(SSL_SESSION *new_session,
+                                      const SSL_SESSION *session) {
+  return true;
+}
+static void ssl_noop_x509_session_clear(SSL_SESSION *session) {}
+static bool ssl_noop_x509_session_verify_cert_chain(SSL_SESSION *session,
+                                                    SSL_HANDSHAKE *hs,
+                                                    uint8_t *out_alert) {
+  return false;
+}
+
+static void ssl_noop_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {}
+static bool ssl_noop_x509_ssl_new(SSL_HANDSHAKE *hs) { return true; }
+static void ssl_noop_x509_ssl_config_free(SSL_CONFIG *cfg) {}
+static void ssl_noop_x509_ssl_flush_cached_client_CA(SSL_CONFIG *cfg) {}
+static bool ssl_noop_x509_ssl_auto_chain_if_needed(SSL_HANDSHAKE *hs) {
+  return true;
+}
+static bool ssl_noop_x509_ssl_ctx_new(SSL_CTX *ctx) { return true; }
+static void ssl_noop_x509_ssl_ctx_free(SSL_CTX *ctx) {}
+static void ssl_noop_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {}
+
+const SSL_X509_METHOD ssl_noop_x509_method = {
+  ssl_noop_x509_check_client_CA_names,
+  ssl_noop_x509_clear,
+  ssl_noop_x509_free,
+  ssl_noop_x509_dup,
+  ssl_noop_x509_flush_cached_chain,
+  ssl_noop_x509_flush_cached_leaf,
+  ssl_noop_x509_session_cache_objects,
+  ssl_noop_x509_session_dup,
+  ssl_noop_x509_session_clear,
+  ssl_noop_x509_session_verify_cert_chain,
+  ssl_noop_x509_hs_flush_cached_ca_names,
+  ssl_noop_x509_ssl_new,
+  ssl_noop_x509_ssl_config_free,
+  ssl_noop_x509_ssl_flush_cached_client_CA,
+  ssl_noop_x509_ssl_auto_chain_if_needed,
+  ssl_noop_x509_ssl_ctx_new,
+  ssl_noop_x509_ssl_ctx_free,
+  ssl_noop_x509_ssl_ctx_flush_cached_client_CA,
+};
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+const SSL_METHOD *TLS_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *SSLv23_method(void) {
+  return TLS_method();
+}
+
+const SSL_METHOD *TLS_with_buffers_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kTLSProtocolMethod,
+      &ssl_noop_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy version-locked methods.
+
+const SSL_METHOD *TLSv1_2_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_2_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *TLSv1_1_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_1_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *TLSv1_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy side-specific methods.
+
+const SSL_METHOD *TLSv1_2_server_method(void) {
+  return TLSv1_2_method();
+}
+
+const SSL_METHOD *TLSv1_1_server_method(void) {
+  return TLSv1_1_method();
+}
+
+const SSL_METHOD *TLSv1_server_method(void) {
+  return TLSv1_method();
+}
+
+const SSL_METHOD *TLSv1_2_client_method(void) {
+  return TLSv1_2_method();
+}
+
+const SSL_METHOD *TLSv1_1_client_method(void) {
+  return TLSv1_1_method();
+}
+
+const SSL_METHOD *TLSv1_client_method(void) {
+  return TLSv1_method();
+}
+
+const SSL_METHOD *SSLv23_server_method(void) {
+  return SSLv23_method();
+}
+
+const SSL_METHOD *SSLv23_client_method(void) {
+  return SSLv23_method();
+}
+
+const SSL_METHOD *TLS_server_method(void) {
+  return TLS_method();
+}
+
+const SSL_METHOD *TLS_client_method(void) {
+  return TLS_method();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc.grpc_back
new file mode 100644
index 0000000..a642e75
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_method.cc.grpc_back	
@@ -0,0 +1,279 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+
+#include "../crypto/internal.h"
+#include "internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+static void ssl3_on_handshake_complete(SSL *ssl) {
+  // The handshake should have released its final message.
+  assert(!ssl->s3->has_message);
+
+  // During the handshake, |hs_buf| is retained. Release if it there is no
+  // excess in it. There may be excess left if there server sent Finished and
+  // HelloRequest in the same record.
+  //
+  // TODO(davidben): SChannel does not support this. Reject this case.
+  if (ssl->s3->hs_buf && ssl->s3->hs_buf->length == 0) {
+    ssl->s3->hs_buf.reset();
+  }
+}
+
+static bool ssl3_set_read_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  // Cipher changes are forbidden if the current epoch has leftover data.
+  if (tls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE);
+    ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+    return false;
+  }
+
+  OPENSSL_memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence));
+  ssl->s3->aead_read_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static bool ssl3_set_write_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
+  if (!tls_flush_pending_hs_data(ssl)) {
+    return false;
+  }
+
+  OPENSSL_memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence));
+  ssl->s3->aead_write_ctx = std::move(aead_ctx);
+  return true;
+}
+
+static const SSL_PROTOCOL_METHOD kTLSProtocolMethod = {
+    false /* is_dtls */,
+    ssl3_new,
+    ssl3_free,
+    ssl3_get_message,
+    ssl3_next_message,
+    ssl3_open_handshake,
+    ssl3_open_change_cipher_spec,
+    ssl3_open_app_data,
+    ssl3_write_app_data,
+    ssl3_dispatch_alert,
+    ssl3_init_message,
+    ssl3_finish_message,
+    ssl3_add_message,
+    ssl3_add_change_cipher_spec,
+    ssl3_flush_flight,
+    ssl3_on_handshake_complete,
+    ssl3_set_read_state,
+    ssl3_set_write_state,
+};
+
+static bool ssl_noop_x509_check_client_CA_names(
+    STACK_OF(CRYPTO_BUFFER) *names) {
+  return true;
+}
+
+static void ssl_noop_x509_clear(CERT *cert) {}
+static void ssl_noop_x509_free(CERT *cert) {}
+static void ssl_noop_x509_dup(CERT *new_cert, const CERT *cert) {}
+static void ssl_noop_x509_flush_cached_leaf(CERT *cert) {}
+static void ssl_noop_x509_flush_cached_chain(CERT *cert) {}
+static bool ssl_noop_x509_session_cache_objects(SSL_SESSION *sess) {
+  return true;
+}
+static bool ssl_noop_x509_session_dup(SSL_SESSION *new_session,
+                                      const SSL_SESSION *session) {
+  return true;
+}
+static void ssl_noop_x509_session_clear(SSL_SESSION *session) {}
+static bool ssl_noop_x509_session_verify_cert_chain(SSL_SESSION *session,
+                                                    SSL_HANDSHAKE *hs,
+                                                    uint8_t *out_alert) {
+  return false;
+}
+
+static void ssl_noop_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {}
+static bool ssl_noop_x509_ssl_new(SSL_HANDSHAKE *hs) { return true; }
+static void ssl_noop_x509_ssl_config_free(SSL_CONFIG *cfg) {}
+static void ssl_noop_x509_ssl_flush_cached_client_CA(SSL_CONFIG *cfg) {}
+static bool ssl_noop_x509_ssl_auto_chain_if_needed(SSL_HANDSHAKE *hs) {
+  return true;
+}
+static bool ssl_noop_x509_ssl_ctx_new(SSL_CTX *ctx) { return true; }
+static void ssl_noop_x509_ssl_ctx_free(SSL_CTX *ctx) {}
+static void ssl_noop_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {}
+
+const SSL_X509_METHOD ssl_noop_x509_method = {
+  ssl_noop_x509_check_client_CA_names,
+  ssl_noop_x509_clear,
+  ssl_noop_x509_free,
+  ssl_noop_x509_dup,
+  ssl_noop_x509_flush_cached_chain,
+  ssl_noop_x509_flush_cached_leaf,
+  ssl_noop_x509_session_cache_objects,
+  ssl_noop_x509_session_dup,
+  ssl_noop_x509_session_clear,
+  ssl_noop_x509_session_verify_cert_chain,
+  ssl_noop_x509_hs_flush_cached_ca_names,
+  ssl_noop_x509_ssl_new,
+  ssl_noop_x509_ssl_config_free,
+  ssl_noop_x509_ssl_flush_cached_client_CA,
+  ssl_noop_x509_ssl_auto_chain_if_needed,
+  ssl_noop_x509_ssl_ctx_new,
+  ssl_noop_x509_ssl_ctx_free,
+  ssl_noop_x509_ssl_ctx_flush_cached_client_CA,
+};
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+const SSL_METHOD *TLS_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *SSLv23_method(void) {
+  return TLS_method();
+}
+
+const SSL_METHOD *TLS_with_buffers_method(void) {
+  static const SSL_METHOD kMethod = {
+      0,
+      &kTLSProtocolMethod,
+      &ssl_noop_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy version-locked methods.
+
+const SSL_METHOD *TLSv1_2_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_2_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *TLSv1_1_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_1_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+const SSL_METHOD *TLSv1_method(void) {
+  static const SSL_METHOD kMethod = {
+      TLS1_VERSION,
+      &kTLSProtocolMethod,
+      &ssl_crypto_x509_method,
+  };
+  return &kMethod;
+}
+
+// Legacy side-specific methods.
+
+const SSL_METHOD *TLSv1_2_server_method(void) {
+  return TLSv1_2_method();
+}
+
+const SSL_METHOD *TLSv1_1_server_method(void) {
+  return TLSv1_1_method();
+}
+
+const SSL_METHOD *TLSv1_server_method(void) {
+  return TLSv1_method();
+}
+
+const SSL_METHOD *TLSv1_2_client_method(void) {
+  return TLSv1_2_method();
+}
+
+const SSL_METHOD *TLSv1_1_client_method(void) {
+  return TLSv1_1_method();
+}
+
+const SSL_METHOD *TLSv1_client_method(void) {
+  return TLSv1_method();
+}
+
+const SSL_METHOD *SSLv23_server_method(void) {
+  return SSLv23_method();
+}
+
+const SSL_METHOD *SSLv23_client_method(void) {
+  return SSLv23_method();
+}
+
+const SSL_METHOD *TLS_server_method(void) {
+  return TLS_method();
+}
+
+const SSL_METHOD *TLS_client_method(void) {
+  return TLS_method();
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc
new file mode 100644
index 0000000..9c81022
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc	
@@ -0,0 +1,703 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl_grpc/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/bytestring.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// kMaxEmptyRecords is the number of consecutive, empty records that will be
+// processed. Without this limit an attacker could send empty records at a
+// faster rate than we can process and cause record processing to loop
+// forever.
+static const uint8_t kMaxEmptyRecords = 32;
+
+// kMaxEarlyDataSkipped is the maximum number of rejected early data bytes that
+// will be skipped. Without this limit an attacker could send records at a
+// faster rate than we can process and cause trial decryption to loop forever.
+// This value should be slightly above kMaxEarlyDataAccepted, which is measured
+// in plaintext.
+static const size_t kMaxEarlyDataSkipped = 16384;
+
+// kMaxWarningAlerts is the number of consecutive warning alerts that will be
+// processed.
+static const uint8_t kMaxWarningAlerts = 4;
+
+// ssl_needs_record_splitting returns one if |ssl|'s current outgoing cipher
+// state needs record-splitting and zero otherwise.
+static bool ssl_needs_record_splitting(const SSL *ssl) {
+#if !defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  return !ssl->s3->aead_write_ctx->is_null_cipher() &&
+         ssl->s3->aead_write_ctx->ProtocolVersion() < TLS1_1_VERSION &&
+         (ssl->mode & SSL_MODE_CBC_RECORD_SPLITTING) != 0 &&
+         SSL_CIPHER_is_block_cipher(ssl->s3->aead_write_ctx->cipher());
+#else
+  return false;
+#endif
+}
+
+bool ssl_record_sequence_update(uint8_t *seq, size_t seq_len) {
+  for (size_t i = seq_len - 1; i < seq_len; i--) {
+    ++seq[i];
+    if (seq[i] != 0) {
+      return true;
+    }
+  }
+  OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+  return false;
+}
+
+size_t ssl_record_prefix_len(const SSL *ssl) {
+  size_t header_len;
+  if (SSL_is_dtls(ssl)) {
+    header_len = DTLS1_RT_HEADER_LENGTH;
+  } else {
+    header_len = SSL3_RT_HEADER_LENGTH;
+  }
+
+  return header_len + ssl->s3->aead_read_ctx->ExplicitNonceLen();
+}
+
+size_t ssl_seal_align_prefix_len(const SSL *ssl) {
+  if (SSL_is_dtls(ssl)) {
+    return DTLS1_RT_HEADER_LENGTH + ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  }
+
+  size_t ret =
+      SSL3_RT_HEADER_LENGTH + ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  if (ssl_needs_record_splitting(ssl)) {
+    ret += SSL3_RT_HEADER_LENGTH;
+    ret += ssl_cipher_get_record_split_len(ssl->s3->aead_write_ctx->cipher());
+  }
+  return ret;
+}
+
+static ssl_open_record_t skip_early_data(SSL *ssl, uint8_t *out_alert,
+                                         size_t consumed) {
+  ssl->s3->early_data_skipped += consumed;
+  if (ssl->s3->early_data_skipped < consumed) {
+    ssl->s3->early_data_skipped = kMaxEarlyDataSkipped + 1;
+  }
+
+  if (ssl->s3->early_data_skipped > kMaxEarlyDataSkipped) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  return ssl_open_record_discard;
+}
+
+ssl_open_record_t tls_open_record(SSL *ssl, uint8_t *out_type,
+                                  Span<uint8_t> *out, size_t *out_consumed,
+                                  uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+    return ssl_open_record_close_notify;
+  }
+
+  // If there is an unprocessed handshake message or we are already buffering
+  // too much, stop before decrypting another handshake record.
+  if (!tls_can_accept_handshake_data(ssl, out_alert)) {
+    return ssl_open_record_error;
+  }
+
+  CBS cbs = CBS(in);
+
+  // Decode the record header.
+  uint8_t type;
+  uint16_t version, ciphertext_len;
+  if (!CBS_get_u8(&cbs, &type) ||
+      !CBS_get_u16(&cbs, &version) ||
+      !CBS_get_u16(&cbs, &ciphertext_len)) {
+    *out_consumed = SSL3_RT_HEADER_LENGTH;
+    return ssl_open_record_partial;
+  }
+
+  bool version_ok;
+  if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+    // Only check the first byte. Enforcing beyond that can prevent decoding
+    // version negotiation failure alerts.
+    version_ok = (version >> 8) == SSL3_VERSION_MAJOR;
+  } else {
+    version_ok = version == ssl->s3->aead_read_ctx->RecordVersion();
+  }
+
+  if (!version_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_NUMBER);
+    *out_alert = SSL_AD_PROTOCOL_VERSION;
+    return ssl_open_record_error;
+  }
+
+  // Check the ciphertext length.
+  if (ciphertext_len > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  // Extract the body.
+  CBS body;
+  if (!CBS_get_bytes(&cbs, &body, ciphertext_len)) {
+    *out_consumed = SSL3_RT_HEADER_LENGTH + (size_t)ciphertext_len;
+    return ssl_open_record_partial;
+  }
+
+  Span<const uint8_t> header = in.subspan(0, SSL3_RT_HEADER_LENGTH);
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HEADER, header);
+
+  *out_consumed = in.size() - CBS_len(&cbs);
+
+  if (ssl->s3->have_version &&
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+      SSL_in_init(ssl) &&
+      type == SSL3_RT_CHANGE_CIPHER_SPEC &&
+      ciphertext_len == 1 &&
+      CBS_data(&body)[0] == 1) {
+    ssl->s3->empty_record_count++;
+    if (ssl->s3->empty_record_count > kMaxEmptyRecords) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_EMPTY_FRAGMENTS);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  // Skip early data received when expecting a second ClientHello if we rejected
+  // 0RTT.
+  if (ssl->s3->skip_early_data &&
+      ssl->s3->aead_read_ctx->is_null_cipher() &&
+      type == SSL3_RT_APPLICATION_DATA) {
+    return skip_early_data(ssl, out_alert, *out_consumed);
+  }
+
+  // Decrypt the body in-place.
+  if (!ssl->s3->aead_read_ctx->Open(
+          out, type, version, ssl->s3->read_sequence, header,
+          MakeSpan(const_cast<uint8_t *>(CBS_data(&body)), CBS_len(&body)))) {
+    if (ssl->s3->skip_early_data && !ssl->s3->aead_read_ctx->is_null_cipher()) {
+      ERR_clear_error();
+      return skip_early_data(ssl, out_alert, *out_consumed);
+    }
+
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
+    *out_alert = SSL_AD_BAD_RECORD_MAC;
+    return ssl_open_record_error;
+  }
+
+  ssl->s3->skip_early_data = false;
+
+  if (!ssl_record_sequence_update(ssl->s3->read_sequence, 8)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return ssl_open_record_error;
+  }
+
+  // TLS 1.3 hides the record type inside the encrypted data.
+  bool has_padding =
+      !ssl->s3->aead_read_ctx->is_null_cipher() &&
+      ssl->s3->aead_read_ctx->ProtocolVersion() >= TLS1_3_VERSION;
+
+  // If there is padding, the plaintext limit includes the padding, but includes
+  // extra room for the inner content type.
+  size_t plaintext_limit =
+      has_padding ? SSL3_RT_MAX_PLAIN_LENGTH + 1 : SSL3_RT_MAX_PLAIN_LENGTH;
+  if (out->size() > plaintext_limit) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  if (has_padding) {
+    // The outer record type is always application_data.
+    if (type != SSL3_RT_APPLICATION_DATA) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_OUTER_RECORD_TYPE);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    do {
+      if (out->empty()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
+        *out_alert = SSL_AD_DECRYPT_ERROR;
+        return ssl_open_record_error;
+      }
+      type = out->back();
+      *out = out->subspan(0, out->size() - 1);
+    } while (type == 0);
+  }
+
+  // Limit the number of consecutive empty records.
+  if (out->empty()) {
+    ssl->s3->empty_record_count++;
+    if (ssl->s3->empty_record_count > kMaxEmptyRecords) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_EMPTY_FRAGMENTS);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+    // Apart from the limit, empty records are returned up to the caller. This
+    // allows the caller to reject records of the wrong type.
+  } else {
+    ssl->s3->empty_record_count = 0;
+  }
+
+  if (type == SSL3_RT_ALERT) {
+    return ssl_process_alert(ssl, out_alert, *out);
+  }
+
+  // Handshake messages may not interleave with any other record type.
+  if (type != SSL3_RT_HANDSHAKE &&
+      tls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  ssl->s3->warning_alert_count = 0;
+
+  *out_type = type;
+  return ssl_open_record_success;
+}
+
+static bool do_seal_record(SSL *ssl, uint8_t *out_prefix, uint8_t *out,
+                           uint8_t *out_suffix, uint8_t type, const uint8_t *in,
+                           const size_t in_len) {
+  SSLAEADContext *aead = ssl->s3->aead_write_ctx.get();
+  uint8_t *extra_in = NULL;
+  size_t extra_in_len = 0;
+  if (!aead->is_null_cipher() &&
+      aead->ProtocolVersion() >= TLS1_3_VERSION) {
+    // TLS 1.3 hides the actual record type inside the encrypted data.
+    extra_in = &type;
+    extra_in_len = 1;
+  }
+
+  size_t suffix_len, ciphertext_len;
+  if (!aead->SuffixLen(&suffix_len, in_len, extra_in_len) ||
+      !aead->CiphertextLen(&ciphertext_len, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+
+  assert(in == out || !buffers_alias(in, in_len, out, in_len));
+  assert(!buffers_alias(in, in_len, out_prefix, ssl_record_prefix_len(ssl)));
+  assert(!buffers_alias(in, in_len, out_suffix, suffix_len));
+
+  if (extra_in_len) {
+    out_prefix[0] = SSL3_RT_APPLICATION_DATA;
+  } else {
+    out_prefix[0] = type;
+  }
+
+  uint16_t record_version = aead->RecordVersion();
+
+  out_prefix[1] = record_version >> 8;
+  out_prefix[2] = record_version & 0xff;
+  out_prefix[3] = ciphertext_len >> 8;
+  out_prefix[4] = ciphertext_len & 0xff;
+  Span<const uint8_t> header = MakeSpan(out_prefix, SSL3_RT_HEADER_LENGTH);
+
+  if (!aead->SealScatter(out_prefix + SSL3_RT_HEADER_LENGTH, out, out_suffix,
+                         out_prefix[0], record_version, ssl->s3->write_sequence,
+                         header, in, in_len, extra_in, extra_in_len) ||
+      !ssl_record_sequence_update(ssl->s3->write_sequence, 8)) {
+    return false;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HEADER, header);
+  return true;
+}
+
+static size_t tls_seal_scatter_prefix_len(const SSL *ssl, uint8_t type,
+                                          size_t in_len) {
+  size_t ret = SSL3_RT_HEADER_LENGTH;
+  if (type == SSL3_RT_APPLICATION_DATA && in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    // In the case of record splitting, the 1-byte record (of the 1/n-1 split)
+    // will be placed in the prefix, as will four of the five bytes of the
+    // record header for the main record. The final byte will replace the first
+    // byte of the plaintext that was used in the small record.
+    ret += ssl_cipher_get_record_split_len(ssl->s3->aead_write_ctx->cipher());
+    ret += SSL3_RT_HEADER_LENGTH - 1;
+  } else {
+    ret += ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  }
+  return ret;
+}
+
+static bool tls_seal_scatter_suffix_len(const SSL *ssl, size_t *out_suffix_len,
+                                        uint8_t type, size_t in_len) {
+  size_t extra_in_len = 0;
+  if (!ssl->s3->aead_write_ctx->is_null_cipher() &&
+      ssl->s3->aead_write_ctx->ProtocolVersion() >= TLS1_3_VERSION) {
+    // TLS 1.3 adds an extra byte for encrypted record type.
+    extra_in_len = 1;
+  }
+  if (type == SSL3_RT_APPLICATION_DATA &&  // clang-format off
+      in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    // With record splitting enabled, the first byte gets sealed into a separate
+    // record which is written into the prefix.
+    in_len -= 1;
+  }
+  return ssl->s3->aead_write_ctx->SuffixLen(out_suffix_len, in_len, extra_in_len);
+}
+
+// tls_seal_scatter_record seals a new record of type |type| and body |in| and
+// splits it between |out_prefix|, |out|, and |out_suffix|. Exactly
+// |tls_seal_scatter_prefix_len| bytes are written to |out_prefix|, |in_len|
+// bytes to |out|, and |tls_seal_scatter_suffix_len| bytes to |out_suffix|. It
+// returns one on success and zero on error. If enabled,
+// |tls_seal_scatter_record| implements TLS 1.0 CBC 1/n-1 record splitting and
+// may write two records concatenated.
+static bool tls_seal_scatter_record(SSL *ssl, uint8_t *out_prefix, uint8_t *out,
+                                   uint8_t *out_suffix, uint8_t type,
+                                   const uint8_t *in, size_t in_len) {
+  if (type == SSL3_RT_APPLICATION_DATA && in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    assert(ssl->s3->aead_write_ctx->ExplicitNonceLen() == 0);
+    const size_t prefix_len = SSL3_RT_HEADER_LENGTH;
+
+    // Write the 1-byte fragment into |out_prefix|.
+    uint8_t *split_body = out_prefix + prefix_len;
+    uint8_t *split_suffix = split_body + 1;
+
+    if (!do_seal_record(ssl, out_prefix, split_body, split_suffix, type, in,
+                        1)) {
+      return false;
+    }
+
+    size_t split_record_suffix_len;
+    if (!ssl->s3->aead_write_ctx->SuffixLen(&split_record_suffix_len, 1, 0)) {
+      assert(false);
+      return false;
+    }
+    const size_t split_record_len = prefix_len + 1 + split_record_suffix_len;
+    assert(SSL3_RT_HEADER_LENGTH + ssl_cipher_get_record_split_len(
+                                       ssl->s3->aead_write_ctx->cipher()) ==
+           split_record_len);
+
+    // Write the n-1-byte fragment. The header gets split between |out_prefix|
+    // (header[:-1]) and |out| (header[-1:]).
+    uint8_t tmp_prefix[SSL3_RT_HEADER_LENGTH];
+    if (!do_seal_record(ssl, tmp_prefix, out + 1, out_suffix, type, in + 1,
+                        in_len - 1)) {
+      return false;
+    }
+    assert(tls_seal_scatter_prefix_len(ssl, type, in_len) ==
+           split_record_len + SSL3_RT_HEADER_LENGTH - 1);
+    OPENSSL_memcpy(out_prefix + split_record_len, tmp_prefix,
+                   SSL3_RT_HEADER_LENGTH - 1);
+    OPENSSL_memcpy(out, tmp_prefix + SSL3_RT_HEADER_LENGTH - 1, 1);
+    return true;
+  }
+
+  return do_seal_record(ssl, out_prefix, out, out_suffix, type, in, in_len);
+}
+
+bool tls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len,
+                     size_t max_out_len, uint8_t type, const uint8_t *in,
+                     size_t in_len) {
+  if (buffers_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  const size_t prefix_len = tls_seal_scatter_prefix_len(ssl, type, in_len);
+  size_t suffix_len;
+  if (!tls_seal_scatter_suffix_len(ssl, &suffix_len, type, in_len)) {
+    return false;
+  }
+  if (in_len + prefix_len < in_len ||
+      prefix_len + in_len + suffix_len < prefix_len + in_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (max_out_len < in_len + prefix_len + suffix_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  uint8_t *prefix = out;
+  uint8_t *body = out + prefix_len;
+  uint8_t *suffix = body + in_len;
+  if (!tls_seal_scatter_record(ssl, prefix, body, suffix, type, in, in_len)) {
+    return false;
+  }
+
+  *out_len = prefix_len + in_len + suffix_len;
+  return true;
+}
+
+enum ssl_open_record_t ssl_process_alert(SSL *ssl, uint8_t *out_alert,
+                                         Span<const uint8_t> in) {
+  // Alerts records may not contain fragmented or multiple alerts.
+  if (in.size() != 2) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ALERT);
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_ALERT, in);
+
+  const uint8_t alert_level = in[0];
+  const uint8_t alert_descr = in[1];
+
+  uint16_t alert = (alert_level << 8) | alert_descr;
+  ssl_do_info_callback(ssl, SSL_CB_READ_ALERT, alert);
+
+  if (alert_level == SSL3_AL_WARNING) {
+    if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
+      ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+      return ssl_open_record_close_notify;
+    }
+
+    // Warning alerts do not exist in TLS 1.3, but RFC 8446 section 6.1
+    // continues to define user_canceled as a signal to cancel the handshake,
+    // without specifying how to handle it. JDK11 misuses it to signal
+    // full-duplex connection close after the handshake. As a workaround, skip
+    // user_canceled as in TLS 1.2. This matches NSS and OpenSSL.
+    if (ssl->s3->have_version &&
+        ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+        alert_descr != SSL_AD_USER_CANCELLED) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ALERT);
+      return ssl_open_record_error;
+    }
+
+    ssl->s3->warning_alert_count++;
+    if (ssl->s3->warning_alert_count > kMaxWarningAlerts) {
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_WARNING_ALERTS);
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  if (alert_level == SSL3_AL_FATAL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_AD_REASON_OFFSET + alert_descr);
+    ERR_add_error_dataf("SSL alert number %d", alert_descr);
+    *out_alert = 0;  // No alert to send back to the peer.
+    return ssl_open_record_error;
+  }
+
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_ALERT_TYPE);
+  return ssl_open_record_error;
+}
+
+OpenRecordResult OpenRecord(SSL *ssl, Span<uint8_t> *out,
+                            size_t *out_record_len, uint8_t *out_alert,
+                            const Span<uint8_t> in) {
+  // This API is a work in progress and currently only works for TLS 1.2 servers
+  // and below.
+  if (SSL_in_init(ssl) ||
+      SSL_is_dtls(ssl) ||
+      ssl_protocol_version(ssl) > TLS1_2_VERSION) {
+    assert(false);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return OpenRecordResult::kError;
+  }
+
+  Span<uint8_t> plaintext;
+  uint8_t type = 0;
+  const ssl_open_record_t result = tls_open_record(
+      ssl, &type, &plaintext, out_record_len, out_alert, in);
+
+  switch (result) {
+    case ssl_open_record_success:
+      if (type != SSL3_RT_APPLICATION_DATA && type != SSL3_RT_ALERT) {
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return OpenRecordResult::kError;
+      }
+      *out = plaintext;
+      return OpenRecordResult::kOK;
+    case ssl_open_record_discard:
+      return OpenRecordResult::kDiscard;
+    case ssl_open_record_partial:
+      return OpenRecordResult::kIncompleteRecord;
+    case ssl_open_record_close_notify:
+      return OpenRecordResult::kAlertCloseNotify;
+    case ssl_open_record_error:
+      return OpenRecordResult::kError;
+  }
+  assert(false);
+  return OpenRecordResult::kError;
+}
+
+size_t SealRecordPrefixLen(const SSL *ssl, const size_t record_len) {
+  return tls_seal_scatter_prefix_len(ssl, SSL3_RT_APPLICATION_DATA, record_len);
+}
+
+size_t SealRecordSuffixLen(const SSL *ssl, const size_t plaintext_len) {
+  assert(plaintext_len <= SSL3_RT_MAX_PLAIN_LENGTH);
+  size_t suffix_len;
+  if (!tls_seal_scatter_suffix_len(ssl, &suffix_len, SSL3_RT_APPLICATION_DATA,
+                                   plaintext_len)) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  assert(suffix_len <= SSL3_RT_MAX_ENCRYPTED_OVERHEAD);
+  return suffix_len;
+}
+
+bool SealRecord(SSL *ssl, const Span<uint8_t> out_prefix,
+                const Span<uint8_t> out, Span<uint8_t> out_suffix,
+                const Span<const uint8_t> in) {
+  // This API is a work in progress and currently only works for TLS 1.2 servers
+  // and below.
+  if (SSL_in_init(ssl) ||
+      SSL_is_dtls(ssl) ||
+      ssl_protocol_version(ssl) > TLS1_2_VERSION) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (out_prefix.size() != SealRecordPrefixLen(ssl, in.size()) ||
+      out.size() != in.size() ||
+      out_suffix.size() != SealRecordSuffixLen(ssl, in.size())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+  return tls_seal_scatter_record(ssl, out_prefix.data(), out.data(),
+                                 out_suffix.data(), SSL3_RT_APPLICATION_DATA,
+                                 in.data(), in.size());
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+size_t SSL_max_seal_overhead(const SSL *ssl) {
+  if (SSL_is_dtls(ssl)) {
+    return dtls_max_seal_overhead(ssl, dtls1_use_current_epoch);
+  }
+
+  size_t ret = SSL3_RT_HEADER_LENGTH;
+  ret += ssl->s3->aead_write_ctx->MaxOverhead();
+  // TLS 1.3 needs an extra byte for the encrypted record type.
+  if (!ssl->s3->aead_write_ctx->is_null_cipher() &&
+      ssl->s3->aead_write_ctx->ProtocolVersion() >= TLS1_3_VERSION) {
+    ret += 1;
+  }
+  if (ssl_needs_record_splitting(ssl)) {
+    ret *= 2;
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc.grpc_back
new file mode 100644
index 0000000..464c5c5
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/ssl/tls_record.cc.grpc_back	
@@ -0,0 +1,703 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/ssl.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+#include "../crypto/internal.h"
+
+
+BSSL_NAMESPACE_BEGIN
+
+// kMaxEmptyRecords is the number of consecutive, empty records that will be
+// processed. Without this limit an attacker could send empty records at a
+// faster rate than we can process and cause record processing to loop
+// forever.
+static const uint8_t kMaxEmptyRecords = 32;
+
+// kMaxEarlyDataSkipped is the maximum number of rejected early data bytes that
+// will be skipped. Without this limit an attacker could send records at a
+// faster rate than we can process and cause trial decryption to loop forever.
+// This value should be slightly above kMaxEarlyDataAccepted, which is measured
+// in plaintext.
+static const size_t kMaxEarlyDataSkipped = 16384;
+
+// kMaxWarningAlerts is the number of consecutive warning alerts that will be
+// processed.
+static const uint8_t kMaxWarningAlerts = 4;
+
+// ssl_needs_record_splitting returns one if |ssl|'s current outgoing cipher
+// state needs record-splitting and zero otherwise.
+static bool ssl_needs_record_splitting(const SSL *ssl) {
+#if !defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+  return !ssl->s3->aead_write_ctx->is_null_cipher() &&
+         ssl->s3->aead_write_ctx->ProtocolVersion() < TLS1_1_VERSION &&
+         (ssl->mode & SSL_MODE_CBC_RECORD_SPLITTING) != 0 &&
+         SSL_CIPHER_is_block_cipher(ssl->s3->aead_write_ctx->cipher());
+#else
+  return false;
+#endif
+}
+
+bool ssl_record_sequence_update(uint8_t *seq, size_t seq_len) {
+  for (size_t i = seq_len - 1; i < seq_len; i--) {
+    ++seq[i];
+    if (seq[i] != 0) {
+      return true;
+    }
+  }
+  OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+  return false;
+}
+
+size_t ssl_record_prefix_len(const SSL *ssl) {
+  size_t header_len;
+  if (SSL_is_dtls(ssl)) {
+    header_len = DTLS1_RT_HEADER_LENGTH;
+  } else {
+    header_len = SSL3_RT_HEADER_LENGTH;
+  }
+
+  return header_len + ssl->s3->aead_read_ctx->ExplicitNonceLen();
+}
+
+size_t ssl_seal_align_prefix_len(const SSL *ssl) {
+  if (SSL_is_dtls(ssl)) {
+    return DTLS1_RT_HEADER_LENGTH + ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  }
+
+  size_t ret =
+      SSL3_RT_HEADER_LENGTH + ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  if (ssl_needs_record_splitting(ssl)) {
+    ret += SSL3_RT_HEADER_LENGTH;
+    ret += ssl_cipher_get_record_split_len(ssl->s3->aead_write_ctx->cipher());
+  }
+  return ret;
+}
+
+static ssl_open_record_t skip_early_data(SSL *ssl, uint8_t *out_alert,
+                                         size_t consumed) {
+  ssl->s3->early_data_skipped += consumed;
+  if (ssl->s3->early_data_skipped < consumed) {
+    ssl->s3->early_data_skipped = kMaxEarlyDataSkipped + 1;
+  }
+
+  if (ssl->s3->early_data_skipped > kMaxEarlyDataSkipped) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MUCH_SKIPPED_EARLY_DATA);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  return ssl_open_record_discard;
+}
+
+ssl_open_record_t tls_open_record(SSL *ssl, uint8_t *out_type,
+                                  Span<uint8_t> *out, size_t *out_consumed,
+                                  uint8_t *out_alert, Span<uint8_t> in) {
+  *out_consumed = 0;
+  if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
+    return ssl_open_record_close_notify;
+  }
+
+  // If there is an unprocessed handshake message or we are already buffering
+  // too much, stop before decrypting another handshake record.
+  if (!tls_can_accept_handshake_data(ssl, out_alert)) {
+    return ssl_open_record_error;
+  }
+
+  CBS cbs = CBS(in);
+
+  // Decode the record header.
+  uint8_t type;
+  uint16_t version, ciphertext_len;
+  if (!CBS_get_u8(&cbs, &type) ||
+      !CBS_get_u16(&cbs, &version) ||
+      !CBS_get_u16(&cbs, &ciphertext_len)) {
+    *out_consumed = SSL3_RT_HEADER_LENGTH;
+    return ssl_open_record_partial;
+  }
+
+  bool version_ok;
+  if (ssl->s3->aead_read_ctx->is_null_cipher()) {
+    // Only check the first byte. Enforcing beyond that can prevent decoding
+    // version negotiation failure alerts.
+    version_ok = (version >> 8) == SSL3_VERSION_MAJOR;
+  } else {
+    version_ok = version == ssl->s3->aead_read_ctx->RecordVersion();
+  }
+
+  if (!version_ok) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_NUMBER);
+    *out_alert = SSL_AD_PROTOCOL_VERSION;
+    return ssl_open_record_error;
+  }
+
+  // Check the ciphertext length.
+  if (ciphertext_len > SSL3_RT_MAX_ENCRYPTED_LENGTH) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  // Extract the body.
+  CBS body;
+  if (!CBS_get_bytes(&cbs, &body, ciphertext_len)) {
+    *out_consumed = SSL3_RT_HEADER_LENGTH + (size_t)ciphertext_len;
+    return ssl_open_record_partial;
+  }
+
+  Span<const uint8_t> header = in.subspan(0, SSL3_RT_HEADER_LENGTH);
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_HEADER, header);
+
+  *out_consumed = in.size() - CBS_len(&cbs);
+
+  if (ssl->s3->have_version &&
+      ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+      SSL_in_init(ssl) &&
+      type == SSL3_RT_CHANGE_CIPHER_SPEC &&
+      ciphertext_len == 1 &&
+      CBS_data(&body)[0] == 1) {
+    ssl->s3->empty_record_count++;
+    if (ssl->s3->empty_record_count > kMaxEmptyRecords) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_EMPTY_FRAGMENTS);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  // Skip early data received when expecting a second ClientHello if we rejected
+  // 0RTT.
+  if (ssl->s3->skip_early_data &&
+      ssl->s3->aead_read_ctx->is_null_cipher() &&
+      type == SSL3_RT_APPLICATION_DATA) {
+    return skip_early_data(ssl, out_alert, *out_consumed);
+  }
+
+  // Decrypt the body in-place.
+  if (!ssl->s3->aead_read_ctx->Open(
+          out, type, version, ssl->s3->read_sequence, header,
+          MakeSpan(const_cast<uint8_t *>(CBS_data(&body)), CBS_len(&body)))) {
+    if (ssl->s3->skip_early_data && !ssl->s3->aead_read_ctx->is_null_cipher()) {
+      ERR_clear_error();
+      return skip_early_data(ssl, out_alert, *out_consumed);
+    }
+
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
+    *out_alert = SSL_AD_BAD_RECORD_MAC;
+    return ssl_open_record_error;
+  }
+
+  ssl->s3->skip_early_data = false;
+
+  if (!ssl_record_sequence_update(ssl->s3->read_sequence, 8)) {
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return ssl_open_record_error;
+  }
+
+  // TLS 1.3 hides the record type inside the encrypted data.
+  bool has_padding =
+      !ssl->s3->aead_read_ctx->is_null_cipher() &&
+      ssl->s3->aead_read_ctx->ProtocolVersion() >= TLS1_3_VERSION;
+
+  // If there is padding, the plaintext limit includes the padding, but includes
+  // extra room for the inner content type.
+  size_t plaintext_limit =
+      has_padding ? SSL3_RT_MAX_PLAIN_LENGTH + 1 : SSL3_RT_MAX_PLAIN_LENGTH;
+  if (out->size() > plaintext_limit) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_DATA_LENGTH_TOO_LONG);
+    *out_alert = SSL_AD_RECORD_OVERFLOW;
+    return ssl_open_record_error;
+  }
+
+  if (has_padding) {
+    // The outer record type is always application_data.
+    if (type != SSL3_RT_APPLICATION_DATA) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_INVALID_OUTER_RECORD_TYPE);
+      *out_alert = SSL_AD_DECODE_ERROR;
+      return ssl_open_record_error;
+    }
+
+    do {
+      if (out->empty()) {
+        OPENSSL_PUT_ERROR(SSL, SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
+        *out_alert = SSL_AD_DECRYPT_ERROR;
+        return ssl_open_record_error;
+      }
+      type = out->back();
+      *out = out->subspan(0, out->size() - 1);
+    } while (type == 0);
+  }
+
+  // Limit the number of consecutive empty records.
+  if (out->empty()) {
+    ssl->s3->empty_record_count++;
+    if (ssl->s3->empty_record_count > kMaxEmptyRecords) {
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_EMPTY_FRAGMENTS);
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      return ssl_open_record_error;
+    }
+    // Apart from the limit, empty records are returned up to the caller. This
+    // allows the caller to reject records of the wrong type.
+  } else {
+    ssl->s3->empty_record_count = 0;
+  }
+
+  if (type == SSL3_RT_ALERT) {
+    return ssl_process_alert(ssl, out_alert, *out);
+  }
+
+  // Handshake messages may not interleave with any other record type.
+  if (type != SSL3_RT_HANDSHAKE &&
+      tls_has_unprocessed_handshake_data(ssl)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD);
+    *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+    return ssl_open_record_error;
+  }
+
+  ssl->s3->warning_alert_count = 0;
+
+  *out_type = type;
+  return ssl_open_record_success;
+}
+
+static bool do_seal_record(SSL *ssl, uint8_t *out_prefix, uint8_t *out,
+                           uint8_t *out_suffix, uint8_t type, const uint8_t *in,
+                           const size_t in_len) {
+  SSLAEADContext *aead = ssl->s3->aead_write_ctx.get();
+  uint8_t *extra_in = NULL;
+  size_t extra_in_len = 0;
+  if (!aead->is_null_cipher() &&
+      aead->ProtocolVersion() >= TLS1_3_VERSION) {
+    // TLS 1.3 hides the actual record type inside the encrypted data.
+    extra_in = &type;
+    extra_in_len = 1;
+  }
+
+  size_t suffix_len, ciphertext_len;
+  if (!aead->SuffixLen(&suffix_len, in_len, extra_in_len) ||
+      !aead->CiphertextLen(&ciphertext_len, in_len, extra_in_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+
+  assert(in == out || !buffers_alias(in, in_len, out, in_len));
+  assert(!buffers_alias(in, in_len, out_prefix, ssl_record_prefix_len(ssl)));
+  assert(!buffers_alias(in, in_len, out_suffix, suffix_len));
+
+  if (extra_in_len) {
+    out_prefix[0] = SSL3_RT_APPLICATION_DATA;
+  } else {
+    out_prefix[0] = type;
+  }
+
+  uint16_t record_version = aead->RecordVersion();
+
+  out_prefix[1] = record_version >> 8;
+  out_prefix[2] = record_version & 0xff;
+  out_prefix[3] = ciphertext_len >> 8;
+  out_prefix[4] = ciphertext_len & 0xff;
+  Span<const uint8_t> header = MakeSpan(out_prefix, SSL3_RT_HEADER_LENGTH);
+
+  if (!aead->SealScatter(out_prefix + SSL3_RT_HEADER_LENGTH, out, out_suffix,
+                         out_prefix[0], record_version, ssl->s3->write_sequence,
+                         header, in, in_len, extra_in, extra_in_len) ||
+      !ssl_record_sequence_update(ssl->s3->write_sequence, 8)) {
+    return false;
+  }
+
+  ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_HEADER, header);
+  return true;
+}
+
+static size_t tls_seal_scatter_prefix_len(const SSL *ssl, uint8_t type,
+                                          size_t in_len) {
+  size_t ret = SSL3_RT_HEADER_LENGTH;
+  if (type == SSL3_RT_APPLICATION_DATA && in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    // In the case of record splitting, the 1-byte record (of the 1/n-1 split)
+    // will be placed in the prefix, as will four of the five bytes of the
+    // record header for the main record. The final byte will replace the first
+    // byte of the plaintext that was used in the small record.
+    ret += ssl_cipher_get_record_split_len(ssl->s3->aead_write_ctx->cipher());
+    ret += SSL3_RT_HEADER_LENGTH - 1;
+  } else {
+    ret += ssl->s3->aead_write_ctx->ExplicitNonceLen();
+  }
+  return ret;
+}
+
+static bool tls_seal_scatter_suffix_len(const SSL *ssl, size_t *out_suffix_len,
+                                        uint8_t type, size_t in_len) {
+  size_t extra_in_len = 0;
+  if (!ssl->s3->aead_write_ctx->is_null_cipher() &&
+      ssl->s3->aead_write_ctx->ProtocolVersion() >= TLS1_3_VERSION) {
+    // TLS 1.3 adds an extra byte for encrypted record type.
+    extra_in_len = 1;
+  }
+  if (type == SSL3_RT_APPLICATION_DATA &&  // clang-format off
+      in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    // With record splitting enabled, the first byte gets sealed into a separate
+    // record which is written into the prefix.
+    in_len -= 1;
+  }
+  return ssl->s3->aead_write_ctx->SuffixLen(out_suffix_len, in_len, extra_in_len);
+}
+
+// tls_seal_scatter_record seals a new record of type |type| and body |in| and
+// splits it between |out_prefix|, |out|, and |out_suffix|. Exactly
+// |tls_seal_scatter_prefix_len| bytes are written to |out_prefix|, |in_len|
+// bytes to |out|, and |tls_seal_scatter_suffix_len| bytes to |out_suffix|. It
+// returns one on success and zero on error. If enabled,
+// |tls_seal_scatter_record| implements TLS 1.0 CBC 1/n-1 record splitting and
+// may write two records concatenated.
+static bool tls_seal_scatter_record(SSL *ssl, uint8_t *out_prefix, uint8_t *out,
+                                   uint8_t *out_suffix, uint8_t type,
+                                   const uint8_t *in, size_t in_len) {
+  if (type == SSL3_RT_APPLICATION_DATA && in_len > 1 &&
+      ssl_needs_record_splitting(ssl)) {
+    assert(ssl->s3->aead_write_ctx->ExplicitNonceLen() == 0);
+    const size_t prefix_len = SSL3_RT_HEADER_LENGTH;
+
+    // Write the 1-byte fragment into |out_prefix|.
+    uint8_t *split_body = out_prefix + prefix_len;
+    uint8_t *split_suffix = split_body + 1;
+
+    if (!do_seal_record(ssl, out_prefix, split_body, split_suffix, type, in,
+                        1)) {
+      return false;
+    }
+
+    size_t split_record_suffix_len;
+    if (!ssl->s3->aead_write_ctx->SuffixLen(&split_record_suffix_len, 1, 0)) {
+      assert(false);
+      return false;
+    }
+    const size_t split_record_len = prefix_len + 1 + split_record_suffix_len;
+    assert(SSL3_RT_HEADER_LENGTH + ssl_cipher_get_record_split_len(
+                                       ssl->s3->aead_write_ctx->cipher()) ==
+           split_record_len);
+
+    // Write the n-1-byte fragment. The header gets split between |out_prefix|
+    // (header[:-1]) and |out| (header[-1:]).
+    uint8_t tmp_prefix[SSL3_RT_HEADER_LENGTH];
+    if (!do_seal_record(ssl, tmp_prefix, out + 1, out_suffix, type, in + 1,
+                        in_len - 1)) {
+      return false;
+    }
+    assert(tls_seal_scatter_prefix_len(ssl, type, in_len) ==
+           split_record_len + SSL3_RT_HEADER_LENGTH - 1);
+    OPENSSL_memcpy(out_prefix + split_record_len, tmp_prefix,
+                   SSL3_RT_HEADER_LENGTH - 1);
+    OPENSSL_memcpy(out, tmp_prefix + SSL3_RT_HEADER_LENGTH - 1, 1);
+    return true;
+  }
+
+  return do_seal_record(ssl, out_prefix, out, out_suffix, type, in, in_len);
+}
+
+bool tls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len,
+                     size_t max_out_len, uint8_t type, const uint8_t *in,
+                     size_t in_len) {
+  if (buffers_alias(in, in_len, out, max_out_len)) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_OUTPUT_ALIASES_INPUT);
+    return false;
+  }
+
+  const size_t prefix_len = tls_seal_scatter_prefix_len(ssl, type, in_len);
+  size_t suffix_len;
+  if (!tls_seal_scatter_suffix_len(ssl, &suffix_len, type, in_len)) {
+    return false;
+  }
+  if (in_len + prefix_len < in_len ||
+      prefix_len + in_len + suffix_len < prefix_len + in_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_RECORD_TOO_LARGE);
+    return false;
+  }
+  if (max_out_len < in_len + prefix_len + suffix_len) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+
+  uint8_t *prefix = out;
+  uint8_t *body = out + prefix_len;
+  uint8_t *suffix = body + in_len;
+  if (!tls_seal_scatter_record(ssl, prefix, body, suffix, type, in, in_len)) {
+    return false;
+  }
+
+  *out_len = prefix_len + in_len + suffix_len;
+  return true;
+}
+
+enum ssl_open_record_t ssl_process_alert(SSL *ssl, uint8_t *out_alert,
+                                         Span<const uint8_t> in) {
+  // Alerts records may not contain fragmented or multiple alerts.
+  if (in.size() != 2) {
+    *out_alert = SSL_AD_DECODE_ERROR;
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ALERT);
+    return ssl_open_record_error;
+  }
+
+  ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_ALERT, in);
+
+  const uint8_t alert_level = in[0];
+  const uint8_t alert_descr = in[1];
+
+  uint16_t alert = (alert_level << 8) | alert_descr;
+  ssl_do_info_callback(ssl, SSL_CB_READ_ALERT, alert);
+
+  if (alert_level == SSL3_AL_WARNING) {
+    if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
+      ssl->s3->read_shutdown = ssl_shutdown_close_notify;
+      return ssl_open_record_close_notify;
+    }
+
+    // Warning alerts do not exist in TLS 1.3, but RFC 8446 section 6.1
+    // continues to define user_canceled as a signal to cancel the handshake,
+    // without specifying how to handle it. JDK11 misuses it to signal
+    // full-duplex connection close after the handshake. As a workaround, skip
+    // user_canceled as in TLS 1.2. This matches NSS and OpenSSL.
+    if (ssl->s3->have_version &&
+        ssl_protocol_version(ssl) >= TLS1_3_VERSION &&
+        alert_descr != SSL_AD_USER_CANCELLED) {
+      *out_alert = SSL_AD_DECODE_ERROR;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ALERT);
+      return ssl_open_record_error;
+    }
+
+    ssl->s3->warning_alert_count++;
+    if (ssl->s3->warning_alert_count > kMaxWarningAlerts) {
+      *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+      OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MANY_WARNING_ALERTS);
+      return ssl_open_record_error;
+    }
+    return ssl_open_record_discard;
+  }
+
+  if (alert_level == SSL3_AL_FATAL) {
+    OPENSSL_PUT_ERROR(SSL, SSL_AD_REASON_OFFSET + alert_descr);
+    ERR_add_error_dataf("SSL alert number %d", alert_descr);
+    *out_alert = 0;  // No alert to send back to the peer.
+    return ssl_open_record_error;
+  }
+
+  *out_alert = SSL_AD_ILLEGAL_PARAMETER;
+  OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_ALERT_TYPE);
+  return ssl_open_record_error;
+}
+
+OpenRecordResult OpenRecord(SSL *ssl, Span<uint8_t> *out,
+                            size_t *out_record_len, uint8_t *out_alert,
+                            const Span<uint8_t> in) {
+  // This API is a work in progress and currently only works for TLS 1.2 servers
+  // and below.
+  if (SSL_in_init(ssl) ||
+      SSL_is_dtls(ssl) ||
+      ssl_protocol_version(ssl) > TLS1_2_VERSION) {
+    assert(false);
+    *out_alert = SSL_AD_INTERNAL_ERROR;
+    return OpenRecordResult::kError;
+  }
+
+  Span<uint8_t> plaintext;
+  uint8_t type = 0;
+  const ssl_open_record_t result = tls_open_record(
+      ssl, &type, &plaintext, out_record_len, out_alert, in);
+
+  switch (result) {
+    case ssl_open_record_success:
+      if (type != SSL3_RT_APPLICATION_DATA && type != SSL3_RT_ALERT) {
+        *out_alert = SSL_AD_UNEXPECTED_MESSAGE;
+        return OpenRecordResult::kError;
+      }
+      *out = plaintext;
+      return OpenRecordResult::kOK;
+    case ssl_open_record_discard:
+      return OpenRecordResult::kDiscard;
+    case ssl_open_record_partial:
+      return OpenRecordResult::kIncompleteRecord;
+    case ssl_open_record_close_notify:
+      return OpenRecordResult::kAlertCloseNotify;
+    case ssl_open_record_error:
+      return OpenRecordResult::kError;
+  }
+  assert(false);
+  return OpenRecordResult::kError;
+}
+
+size_t SealRecordPrefixLen(const SSL *ssl, const size_t record_len) {
+  return tls_seal_scatter_prefix_len(ssl, SSL3_RT_APPLICATION_DATA, record_len);
+}
+
+size_t SealRecordSuffixLen(const SSL *ssl, const size_t plaintext_len) {
+  assert(plaintext_len <= SSL3_RT_MAX_PLAIN_LENGTH);
+  size_t suffix_len;
+  if (!tls_seal_scatter_suffix_len(ssl, &suffix_len, SSL3_RT_APPLICATION_DATA,
+                                   plaintext_len)) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return 0;
+  }
+  assert(suffix_len <= SSL3_RT_MAX_ENCRYPTED_OVERHEAD);
+  return suffix_len;
+}
+
+bool SealRecord(SSL *ssl, const Span<uint8_t> out_prefix,
+                const Span<uint8_t> out, Span<uint8_t> out_suffix,
+                const Span<const uint8_t> in) {
+  // This API is a work in progress and currently only works for TLS 1.2 servers
+  // and below.
+  if (SSL_in_init(ssl) ||
+      SSL_is_dtls(ssl) ||
+      ssl_protocol_version(ssl) > TLS1_2_VERSION) {
+    assert(false);
+    OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
+    return false;
+  }
+
+  if (out_prefix.size() != SealRecordPrefixLen(ssl, in.size()) ||
+      out.size() != in.size() ||
+      out_suffix.size() != SealRecordSuffixLen(ssl, in.size())) {
+    OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFER_TOO_SMALL);
+    return false;
+  }
+  return tls_seal_scatter_record(ssl, out_prefix.data(), out.data(),
+                                 out_suffix.data(), SSL3_RT_APPLICATION_DATA,
+                                 in.data(), in.size());
+}
+
+BSSL_NAMESPACE_END
+
+using namespace bssl;
+
+size_t SSL_max_seal_overhead(const SSL *ssl) {
+  if (SSL_is_dtls(ssl)) {
+    return dtls_max_seal_overhead(ssl, dtls1_use_current_epoch);
+  }
+
+  size_t ret = SSL3_RT_HEADER_LENGTH;
+  ret += ssl->s3->aead_write_ctx->MaxOverhead();
+  // TLS 1.3 needs an extra byte for the encrypted record type.
+  if (!ssl->s3->aead_write_ctx->is_null_cipher() &&
+      ssl->s3->aead_write_ctx->ProtocolVersion() >= TLS1_3_VERSION) {
+    ret += 1;
+  }
+  if (ssl_needs_record_splitting(ssl)) {
+    ret *= 2;
+  }
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c
new file mode 100644
index 0000000..1fc617d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c	
@@ -0,0 +1,2167 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// Some of this code is taken from the ref10 version of Ed25519 in SUPERCOP
+// 20141124 (http://bench.cr.yp.to/supercop.html). That code is released as
+// public domain but parts have been replaced with code generated by Fiat
+// (https://github.com/mit-plv/fiat-crypto), which is MIT licensed.
+//
+// The field functions are shared by Ed25519 and X25519 where possible.
+
+#include <openssl_grpc/curve25519.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl_grpc/cpu.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/rand.h>
+#include <openssl_grpc/sha.h>
+#include <openssl_grpc/type_check.h>
+
+#include "internal.h"
+#include "../../crypto/internal.h"
+
+
+// Various pre-computed constants.
+#include "./curve25519_tables.h"
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+#include "./curve25519_64.h"
+#else
+#include "./curve25519_32.h"
+#endif  // BORINGSSL_CURVE25519_64BIT
+
+
+// Low-level intrinsic operations
+
+static uint64_t load_3(const uint8_t *in) {
+  uint64_t result;
+  result = (uint64_t)in[0];
+  result |= ((uint64_t)in[1]) << 8;
+  result |= ((uint64_t)in[2]) << 16;
+  return result;
+}
+
+static uint64_t load_4(const uint8_t *in) {
+  uint64_t result;
+  result = (uint64_t)in[0];
+  result |= ((uint64_t)in[1]) << 8;
+  result |= ((uint64_t)in[2]) << 16;
+  result |= ((uint64_t)in[3]) << 24;
+  return result;
+}
+
+
+// Field operations.
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+
+typedef uint64_t fe_limb_t;
+#define FE_NUM_LIMBS 5
+
+// assert_fe asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc]]
+//
+// See comments in curve25519_64.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe(f)                                                    \
+  do {                                                                  \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 5; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <= UINT64_C(0x8cccccccccccc));             \
+    }                                                                   \
+  } while (0)
+
+// assert_fe_loose asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664]]
+//
+// See comments in curve25519_64.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe_loose(f)                                              \
+  do {                                                                  \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 5; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <= UINT64_C(0x1a666666666664));            \
+    }                                                                   \
+  } while (0)
+
+#else
+
+typedef uint32_t fe_limb_t;
+#define FE_NUM_LIMBS 10
+
+// assert_fe asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+//
+// See comments in curve25519_32.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe(f)                                                     \
+  do {                                                                   \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 10; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <=                                          \
+             ((_assert_fe_i & 1) ? 0x2333333u : 0x4666666u));            \
+    }                                                                    \
+  } while (0)
+
+// assert_fe_loose asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+//
+// See comments in curve25519_32.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe_loose(f)                                               \
+  do {                                                                   \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 10; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <=                                          \
+             ((_assert_fe_i & 1) ? 0x6999999u : 0xd333332u));            \
+    }                                                                    \
+  } while (0)
+
+#endif  // BORINGSSL_CURVE25519_64BIT
+
+OPENSSL_STATIC_ASSERT(sizeof(fe) == sizeof(fe_limb_t) * FE_NUM_LIMBS,
+                      "fe_limb_t[FE_NUM_LIMBS] is inconsistent with fe");
+
+static void fe_frombytes_strict(fe *h, const uint8_t s[32]) {
+  // |fiat_25519_from_bytes| requires the top-most bit be clear.
+  assert((s[31] & 0x80) == 0);
+  fiat_25519_from_bytes(h->v, s);
+  assert_fe(h->v);
+}
+
+static void fe_frombytes(fe *h, const uint8_t s[32]) {
+  uint8_t s_copy[32];
+  OPENSSL_memcpy(s_copy, s, 32);
+  s_copy[31] &= 0x7f;
+  fe_frombytes_strict(h, s_copy);
+}
+
+static void fe_tobytes(uint8_t s[32], const fe *f) {
+  assert_fe(f->v);
+  fiat_25519_to_bytes(s, f->v);
+}
+
+// h = 0
+static void fe_0(fe *h) {
+  OPENSSL_memset(h, 0, sizeof(fe));
+}
+
+static void fe_loose_0(fe_loose *h) {
+  OPENSSL_memset(h, 0, sizeof(fe_loose));
+}
+
+// h = 1
+static void fe_1(fe *h) {
+  OPENSSL_memset(h, 0, sizeof(fe));
+  h->v[0] = 1;
+}
+
+static void fe_loose_1(fe_loose *h) {
+  OPENSSL_memset(h, 0, sizeof(fe_loose));
+  h->v[0] = 1;
+}
+
+// h = f + g
+// Can overlap h with f or g.
+static void fe_add(fe_loose *h, const fe *f, const fe *g) {
+  assert_fe(f->v);
+  assert_fe(g->v);
+  fiat_25519_add(h->v, f->v, g->v);
+  assert_fe_loose(h->v);
+}
+
+// h = f - g
+// Can overlap h with f or g.
+static void fe_sub(fe_loose *h, const fe *f, const fe *g) {
+  assert_fe(f->v);
+  assert_fe(g->v);
+  fiat_25519_sub(h->v, f->v, g->v);
+  assert_fe_loose(h->v);
+}
+
+static void fe_carry(fe *h, const fe_loose* f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry(h->v, f->v);
+  assert_fe(h->v);
+}
+
+static void fe_mul_impl(fe_limb_t out[FE_NUM_LIMBS],
+                        const fe_limb_t in1[FE_NUM_LIMBS],
+                        const fe_limb_t in2[FE_NUM_LIMBS]) {
+  assert_fe_loose(in1);
+  assert_fe_loose(in2);
+  fiat_25519_carry_mul(out, in1, in2);
+  assert_fe(out);
+}
+
+static void fe_mul_ltt(fe_loose *h, const fe *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_llt(fe_loose *h, const fe_loose *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_ttt(fe *h, const fe *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_tlt(fe *h, const fe_loose *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_ttl(fe *h, const fe *f, const fe_loose *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_tll(fe *h, const fe_loose *f, const fe_loose *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_sq_tl(fe *h, const fe_loose *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_square(h->v, f->v);
+  assert_fe(h->v);
+}
+
+static void fe_sq_tt(fe *h, const fe *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_square(h->v, f->v);
+  assert_fe(h->v);
+}
+
+// Replace (f,g) with (g,f) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+static void fe_cswap(fe *f, fe *g, fe_limb_t b) {
+  b = 0-b;
+  for (unsigned i = 0; i < FE_NUM_LIMBS; i++) {
+    fe_limb_t x = f->v[i] ^ g->v[i];
+    x &= b;
+    f->v[i] ^= x;
+    g->v[i] ^= x;
+  }
+}
+
+static void fe_mul121666(fe *h, const fe_loose *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_scmul_121666(h->v, f->v);
+  assert_fe(h->v);
+}
+
+// h = -f
+static void fe_neg(fe_loose *h, const fe *f) {
+  assert_fe(f->v);
+  fiat_25519_opp(h->v, f->v);
+  assert_fe_loose(h->v);
+}
+
+// Replace (f,g) with (g,g) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+static void fe_cmov(fe_loose *f, const fe_loose *g, fe_limb_t b) {
+  // Silence an unused function warning. |fiat_25519_selectznz| isn't quite the
+  // calling convention the rest of this code wants, so implement it by hand.
+  //
+  // TODO(davidben): Switch to fiat's calling convention, or ask fiat to emit a
+  // different one.
+  (void)fiat_25519_selectznz;
+
+  b = 0-b;
+  for (unsigned i = 0; i < FE_NUM_LIMBS; i++) {
+    fe_limb_t x = f->v[i] ^ g->v[i];
+    x &= b;
+    f->v[i] ^= x;
+  }
+}
+
+// h = f
+static void fe_copy(fe *h, const fe *f) {
+  OPENSSL_memmove(h, f, sizeof(fe));
+}
+
+static void fe_copy_lt(fe_loose *h, const fe *f) {
+  OPENSSL_STATIC_ASSERT(sizeof(fe_loose) == sizeof(fe),
+                        "fe and fe_loose mismatch");
+  OPENSSL_memmove(h, f, sizeof(fe));
+}
+#if !defined(OPENSSL_SMALL)
+static void fe_copy_ll(fe_loose *h, const fe_loose *f) {
+  OPENSSL_memmove(h, f, sizeof(fe_loose));
+}
+#endif // !defined(OPENSSL_SMALL)
+
+static void fe_loose_invert(fe *out, const fe_loose *z) {
+  fe t0;
+  fe t1;
+  fe t2;
+  fe t3;
+  int i;
+
+  fe_sq_tl(&t0, z);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_tlt(&t1, z, &t1);
+  fe_mul_ttt(&t0, &t0, &t1);
+  fe_sq_tt(&t2, &t0);
+  fe_mul_ttt(&t1, &t1, &t2);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t2, &t2, &t1);
+  fe_sq_tt(&t3, &t2);
+  for (i = 1; i < 20; ++i) {
+    fe_sq_tt(&t3, &t3);
+  }
+  fe_mul_ttt(&t2, &t3, &t2);
+  fe_sq_tt(&t2, &t2);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t2, &t2, &t1);
+  fe_sq_tt(&t3, &t2);
+  for (i = 1; i < 100; ++i) {
+    fe_sq_tt(&t3, &t3);
+  }
+  fe_mul_ttt(&t2, &t3, &t2);
+  fe_sq_tt(&t2, &t2);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(out, &t1, &t0);
+}
+
+static void fe_invert(fe *out, const fe *z) {
+  fe_loose l;
+  fe_copy_lt(&l, z);
+  fe_loose_invert(out, &l);
+}
+
+// return 0 if f == 0
+// return 1 if f != 0
+static int fe_isnonzero(const fe_loose *f) {
+  fe tight;
+  fe_carry(&tight, f);
+  uint8_t s[32];
+  fe_tobytes(s, &tight);
+
+  static const uint8_t zero[32] = {0};
+  return CRYPTO_memcmp(s, zero, sizeof(zero)) != 0;
+}
+
+// return 1 if f is in {1,3,5,...,q-2}
+// return 0 if f is in {0,2,4,...,q-1}
+static int fe_isnegative(const fe *f) {
+  uint8_t s[32];
+  fe_tobytes(s, f);
+  return s[0] & 1;
+}
+
+static void fe_sq2_tt(fe *h, const fe *f) {
+  // h = f^2
+  fe_sq_tt(h, f);
+
+  // h = h + h
+  fe_loose tmp;
+  fe_add(&tmp, h, h);
+  fe_carry(h, &tmp);
+}
+
+static void fe_pow22523(fe *out, const fe *z) {
+  fe t0;
+  fe t1;
+  fe t2;
+  int i;
+
+  fe_sq_tt(&t0, z);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, z, &t1);
+  fe_mul_ttt(&t0, &t0, &t1);
+  fe_sq_tt(&t0, &t0);
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, &t1, &t0);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 20; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, &t1, &t0);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 100; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t0, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t0, &t0);
+  }
+  fe_mul_ttt(out, &t0, z);
+}
+
+
+// Group operations.
+
+void x25519_ge_tobytes(uint8_t s[32], const ge_p2 *h) {
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(&recip, &h->Z);
+  fe_mul_ttt(&x, &h->X, &recip);
+  fe_mul_ttt(&y, &h->Y, &recip);
+  fe_tobytes(s, &y);
+  s[31] ^= fe_isnegative(&x) << 7;
+}
+
+static void ge_p3_tobytes(uint8_t s[32], const ge_p3 *h) {
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(&recip, &h->Z);
+  fe_mul_ttt(&x, &h->X, &recip);
+  fe_mul_ttt(&y, &h->Y, &recip);
+  fe_tobytes(s, &y);
+  s[31] ^= fe_isnegative(&x) << 7;
+}
+
+int x25519_ge_frombytes_vartime(ge_p3 *h, const uint8_t s[32]) {
+  fe u;
+  fe_loose v;
+  fe v3;
+  fe vxx;
+  fe_loose check;
+
+  fe_frombytes(&h->Y, s);
+  fe_1(&h->Z);
+  fe_sq_tt(&v3, &h->Y);
+  fe_mul_ttt(&vxx, &v3, &d);
+  fe_sub(&v, &v3, &h->Z);  // u = y^2-1
+  fe_carry(&u, &v);
+  fe_add(&v, &vxx, &h->Z);  // v = dy^2+1
+
+  fe_sq_tl(&v3, &v);
+  fe_mul_ttl(&v3, &v3, &v);  // v3 = v^3
+  fe_sq_tt(&h->X, &v3);
+  fe_mul_ttl(&h->X, &h->X, &v);
+  fe_mul_ttt(&h->X, &h->X, &u);  // x = uv^7
+
+  fe_pow22523(&h->X, &h->X);  // x = (uv^7)^((q-5)/8)
+  fe_mul_ttt(&h->X, &h->X, &v3);
+  fe_mul_ttt(&h->X, &h->X, &u);  // x = uv^3(uv^7)^((q-5)/8)
+
+  fe_sq_tt(&vxx, &h->X);
+  fe_mul_ttl(&vxx, &vxx, &v);
+  fe_sub(&check, &vxx, &u);
+  if (fe_isnonzero(&check)) {
+    fe_add(&check, &vxx, &u);
+    if (fe_isnonzero(&check)) {
+      return 0;
+    }
+    fe_mul_ttt(&h->X, &h->X, &sqrtm1);
+  }
+
+  if (fe_isnegative(&h->X) != (s[31] >> 7)) {
+    fe_loose t;
+    fe_neg(&t, &h->X);
+    fe_carry(&h->X, &t);
+  }
+
+  fe_mul_ttt(&h->T, &h->X, &h->Y);
+  return 1;
+}
+
+static void ge_p2_0(ge_p2 *h) {
+  fe_0(&h->X);
+  fe_1(&h->Y);
+  fe_1(&h->Z);
+}
+
+static void ge_p3_0(ge_p3 *h) {
+  fe_0(&h->X);
+  fe_1(&h->Y);
+  fe_1(&h->Z);
+  fe_0(&h->T);
+}
+
+static void ge_cached_0(ge_cached *h) {
+  fe_loose_1(&h->YplusX);
+  fe_loose_1(&h->YminusX);
+  fe_loose_1(&h->Z);
+  fe_loose_0(&h->T2d);
+}
+
+static void ge_precomp_0(ge_precomp *h) {
+  fe_loose_1(&h->yplusx);
+  fe_loose_1(&h->yminusx);
+  fe_loose_0(&h->xy2d);
+}
+
+// r = p
+static void ge_p3_to_p2(ge_p2 *r, const ge_p3 *p) {
+  fe_copy(&r->X, &p->X);
+  fe_copy(&r->Y, &p->Y);
+  fe_copy(&r->Z, &p->Z);
+}
+
+// r = p
+void x25519_ge_p3_to_cached(ge_cached *r, const ge_p3 *p) {
+  fe_add(&r->YplusX, &p->Y, &p->X);
+  fe_sub(&r->YminusX, &p->Y, &p->X);
+  fe_copy_lt(&r->Z, &p->Z);
+  fe_mul_ltt(&r->T2d, &p->T, &d2);
+}
+
+// r = p
+void x25519_ge_p1p1_to_p2(ge_p2 *r, const ge_p1p1 *p) {
+  fe_mul_tll(&r->X, &p->X, &p->T);
+  fe_mul_tll(&r->Y, &p->Y, &p->Z);
+  fe_mul_tll(&r->Z, &p->Z, &p->T);
+}
+
+// r = p
+void x25519_ge_p1p1_to_p3(ge_p3 *r, const ge_p1p1 *p) {
+  fe_mul_tll(&r->X, &p->X, &p->T);
+  fe_mul_tll(&r->Y, &p->Y, &p->Z);
+  fe_mul_tll(&r->Z, &p->Z, &p->T);
+  fe_mul_tll(&r->T, &p->X, &p->Y);
+}
+
+// r = p
+static void ge_p1p1_to_cached(ge_cached *r, const ge_p1p1 *p) {
+  ge_p3 t;
+  x25519_ge_p1p1_to_p3(&t, p);
+  x25519_ge_p3_to_cached(r, &t);
+}
+
+// r = 2 * p
+static void ge_p2_dbl(ge_p1p1 *r, const ge_p2 *p) {
+  fe trX, trZ, trT;
+  fe t0;
+
+  fe_sq_tt(&trX, &p->X);
+  fe_sq_tt(&trZ, &p->Y);
+  fe_sq2_tt(&trT, &p->Z);
+  fe_add(&r->Y, &p->X, &p->Y);
+  fe_sq_tl(&t0, &r->Y);
+
+  fe_add(&r->Y, &trZ, &trX);
+  fe_sub(&r->Z, &trZ, &trX);
+  fe_carry(&trZ, &r->Y);
+  fe_sub(&r->X, &t0, &trZ);
+  fe_carry(&trZ, &r->Z);
+  fe_sub(&r->T, &trT, &trZ);
+}
+
+// r = 2 * p
+static void ge_p3_dbl(ge_p1p1 *r, const ge_p3 *p) {
+  ge_p2 q;
+  ge_p3_to_p2(&q, p);
+  ge_p2_dbl(r, &q);
+}
+
+// r = p + q
+static void ge_madd(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q) {
+  fe trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->yplusx);
+  fe_mul_tll(&trY, &r->Y, &q->yminusx);
+  fe_mul_tlt(&trT, &q->xy2d, &p->T);
+  fe_add(&r->T, &p->Z, &p->Z);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_add(&r->Z, &trZ, &trT);
+  fe_sub(&r->T, &trZ, &trT);
+}
+
+// r = p - q
+static void ge_msub(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q) {
+  fe trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->yminusx);
+  fe_mul_tll(&trY, &r->Y, &q->yplusx);
+  fe_mul_tlt(&trT, &q->xy2d, &p->T);
+  fe_add(&r->T, &p->Z, &p->Z);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_sub(&r->Z, &trZ, &trT);
+  fe_add(&r->T, &trZ, &trT);
+}
+
+// r = p + q
+void x25519_ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q) {
+  fe trX, trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->YplusX);
+  fe_mul_tll(&trY, &r->Y, &q->YminusX);
+  fe_mul_tlt(&trT, &q->T2d, &p->T);
+  fe_mul_ttl(&trX, &p->Z, &q->Z);
+  fe_add(&r->T, &trX, &trX);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_add(&r->Z, &trZ, &trT);
+  fe_sub(&r->T, &trZ, &trT);
+}
+
+// r = p - q
+void x25519_ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q) {
+  fe trX, trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->YminusX);
+  fe_mul_tll(&trY, &r->Y, &q->YplusX);
+  fe_mul_tlt(&trT, &q->T2d, &p->T);
+  fe_mul_ttl(&trX, &p->Z, &q->Z);
+  fe_add(&r->T, &trX, &trX);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_sub(&r->Z, &trZ, &trT);
+  fe_add(&r->T, &trZ, &trT);
+}
+
+static uint8_t equal(signed char b, signed char c) {
+  uint8_t ub = b;
+  uint8_t uc = c;
+  uint8_t x = ub ^ uc;  // 0: yes; 1..255: no
+  uint32_t y = x;       // 0: yes; 1..255: no
+  y -= 1;               // 4294967295: yes; 0..254: no
+  y >>= 31;             // 1: yes; 0: no
+  return y;
+}
+
+static void cmov(ge_precomp *t, const ge_precomp *u, uint8_t b) {
+  fe_cmov(&t->yplusx, &u->yplusx, b);
+  fe_cmov(&t->yminusx, &u->yminusx, b);
+  fe_cmov(&t->xy2d, &u->xy2d, b);
+}
+
+void x25519_ge_scalarmult_small_precomp(
+    ge_p3 *h, const uint8_t a[32], const uint8_t precomp_table[15 * 2 * 32]) {
+  // precomp_table is first expanded into matching |ge_precomp|
+  // elements.
+  ge_precomp multiples[15];
+
+  unsigned i;
+  for (i = 0; i < 15; i++) {
+    // The precomputed table is assumed to already clear the top bit, so
+    // |fe_frombytes_strict| may be used directly.
+    const uint8_t *bytes = &precomp_table[i*(2 * 32)];
+    fe x, y;
+    fe_frombytes_strict(&x, bytes);
+    fe_frombytes_strict(&y, bytes + 32);
+
+    ge_precomp *out = &multiples[i];
+    fe_add(&out->yplusx, &y, &x);
+    fe_sub(&out->yminusx, &y, &x);
+    fe_mul_ltt(&out->xy2d, &x, &y);
+    fe_mul_llt(&out->xy2d, &out->xy2d, &d2);
+  }
+
+  // See the comment above |k25519SmallPrecomp| about the structure of the
+  // precomputed elements. This loop does 64 additions and 64 doublings to
+  // calculate the result.
+  ge_p3_0(h);
+
+  for (i = 63; i < 64; i--) {
+    unsigned j;
+    signed char index = 0;
+
+    for (j = 0; j < 4; j++) {
+      const uint8_t bit = 1 & (a[(8 * j) + (i / 8)] >> (i & 7));
+      index |= (bit << j);
+    }
+
+    ge_precomp e;
+    ge_precomp_0(&e);
+
+    for (j = 1; j < 16; j++) {
+      cmov(&e, &multiples[j-1], equal(index, j));
+    }
+
+    ge_cached cached;
+    ge_p1p1 r;
+    x25519_ge_p3_to_cached(&cached, h);
+    x25519_ge_add(&r, h, &cached);
+    x25519_ge_p1p1_to_p3(h, &r);
+
+    ge_madd(&r, h, &e);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+}
+
+#if defined(OPENSSL_SMALL)
+
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t a[32]) {
+  x25519_ge_scalarmult_small_precomp(h, a, k25519SmallPrecomp);
+}
+
+#else
+
+static uint8_t negative(signed char b) {
+  uint32_t x = b;
+  x >>= 31;  // 1: yes; 0: no
+  return x;
+}
+
+static void table_select(ge_precomp *t, int pos, signed char b) {
+  ge_precomp minust;
+  uint8_t bnegative = negative(b);
+  uint8_t babs = b - ((uint8_t)((-bnegative) & b) << 1);
+
+  ge_precomp_0(t);
+  cmov(t, &k25519Precomp[pos][0], equal(babs, 1));
+  cmov(t, &k25519Precomp[pos][1], equal(babs, 2));
+  cmov(t, &k25519Precomp[pos][2], equal(babs, 3));
+  cmov(t, &k25519Precomp[pos][3], equal(babs, 4));
+  cmov(t, &k25519Precomp[pos][4], equal(babs, 5));
+  cmov(t, &k25519Precomp[pos][5], equal(babs, 6));
+  cmov(t, &k25519Precomp[pos][6], equal(babs, 7));
+  cmov(t, &k25519Precomp[pos][7], equal(babs, 8));
+  fe_copy_ll(&minust.yplusx, &t->yminusx);
+  fe_copy_ll(&minust.yminusx, &t->yplusx);
+
+  // NOTE: the input table is canonical, but types don't encode it
+  fe tmp;
+  fe_carry(&tmp, &t->xy2d);
+  fe_neg(&minust.xy2d, &tmp);
+
+  cmov(t, &minust, bnegative);
+}
+
+// h = a * B
+// where a = a[0]+256*a[1]+...+256^31 a[31]
+// B is the Ed25519 base point (x,4/5) with x positive.
+//
+// Preconditions:
+//   a[31] <= 127
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t *a) {
+  signed char e[64];
+  signed char carry;
+  ge_p1p1 r;
+  ge_p2 s;
+  ge_precomp t;
+  int i;
+
+  for (i = 0; i < 32; ++i) {
+    e[2 * i + 0] = (a[i] >> 0) & 15;
+    e[2 * i + 1] = (a[i] >> 4) & 15;
+  }
+  // each e[i] is between 0 and 15
+  // e[63] is between 0 and 7
+
+  carry = 0;
+  for (i = 0; i < 63; ++i) {
+    e[i] += carry;
+    carry = e[i] + 8;
+    carry >>= 4;
+    e[i] -= carry << 4;
+  }
+  e[63] += carry;
+  // each e[i] is between -8 and 8
+
+  ge_p3_0(h);
+  for (i = 1; i < 64; i += 2) {
+    table_select(&t, i / 2, e[i]);
+    ge_madd(&r, h, &t);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+
+  ge_p3_dbl(&r, h);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p3(h, &r);
+
+  for (i = 0; i < 64; i += 2) {
+    table_select(&t, i / 2, e[i]);
+    ge_madd(&r, h, &t);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+}
+
+#endif
+
+static void cmov_cached(ge_cached *t, ge_cached *u, uint8_t b) {
+  fe_cmov(&t->YplusX, &u->YplusX, b);
+  fe_cmov(&t->YminusX, &u->YminusX, b);
+  fe_cmov(&t->Z, &u->Z, b);
+  fe_cmov(&t->T2d, &u->T2d, b);
+}
+
+// r = scalar * A.
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+void x25519_ge_scalarmult(ge_p2 *r, const uint8_t *scalar, const ge_p3 *A) {
+  ge_p2 Ai_p2[8];
+  ge_cached Ai[16];
+  ge_p1p1 t;
+
+  ge_cached_0(&Ai[0]);
+  x25519_ge_p3_to_cached(&Ai[1], A);
+  ge_p3_to_p2(&Ai_p2[1], A);
+
+  unsigned i;
+  for (i = 2; i < 16; i += 2) {
+    ge_p2_dbl(&t, &Ai_p2[i / 2]);
+    ge_p1p1_to_cached(&Ai[i], &t);
+    if (i < 8) {
+      x25519_ge_p1p1_to_p2(&Ai_p2[i], &t);
+    }
+    x25519_ge_add(&t, A, &Ai[i]);
+    ge_p1p1_to_cached(&Ai[i + 1], &t);
+    if (i < 7) {
+      x25519_ge_p1p1_to_p2(&Ai_p2[i + 1], &t);
+    }
+  }
+
+  ge_p2_0(r);
+  ge_p3 u;
+
+  for (i = 0; i < 256; i += 4) {
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p3(&u, &t);
+
+    uint8_t index = scalar[31 - i/8];
+    index >>= 4 - (i & 4);
+    index &= 0xf;
+
+    unsigned j;
+    ge_cached selected;
+    ge_cached_0(&selected);
+    for (j = 0; j < 16; j++) {
+      cmov_cached(&selected, &Ai[j], equal(j, index));
+    }
+
+    x25519_ge_add(&t, &u, &selected);
+    x25519_ge_p1p1_to_p2(r, &t);
+  }
+}
+
+static void slide(signed char *r, const uint8_t *a) {
+  int i;
+  int b;
+  int k;
+
+  for (i = 0; i < 256; ++i) {
+    r[i] = 1 & (a[i >> 3] >> (i & 7));
+  }
+
+  for (i = 0; i < 256; ++i) {
+    if (r[i]) {
+      for (b = 1; b <= 6 && i + b < 256; ++b) {
+        if (r[i + b]) {
+          if (r[i] + (r[i + b] << b) <= 15) {
+            r[i] += r[i + b] << b;
+            r[i + b] = 0;
+          } else if (r[i] - (r[i + b] << b) >= -15) {
+            r[i] -= r[i + b] << b;
+            for (k = i + b; k < 256; ++k) {
+              if (!r[k]) {
+                r[k] = 1;
+                break;
+              }
+              r[k] = 0;
+            }
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+}
+
+// r = a * A + b * B
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+// and b = b[0]+256*b[1]+...+256^31 b[31].
+// B is the Ed25519 base point (x,4/5) with x positive.
+static void ge_double_scalarmult_vartime(ge_p2 *r, const uint8_t *a,
+                                         const ge_p3 *A, const uint8_t *b) {
+  signed char aslide[256];
+  signed char bslide[256];
+  ge_cached Ai[8];  // A,3A,5A,7A,9A,11A,13A,15A
+  ge_p1p1 t;
+  ge_p3 u;
+  ge_p3 A2;
+  int i;
+
+  slide(aslide, a);
+  slide(bslide, b);
+
+  x25519_ge_p3_to_cached(&Ai[0], A);
+  ge_p3_dbl(&t, A);
+  x25519_ge_p1p1_to_p3(&A2, &t);
+  x25519_ge_add(&t, &A2, &Ai[0]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[1], &u);
+  x25519_ge_add(&t, &A2, &Ai[1]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[2], &u);
+  x25519_ge_add(&t, &A2, &Ai[2]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[3], &u);
+  x25519_ge_add(&t, &A2, &Ai[3]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[4], &u);
+  x25519_ge_add(&t, &A2, &Ai[4]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[5], &u);
+  x25519_ge_add(&t, &A2, &Ai[5]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[6], &u);
+  x25519_ge_add(&t, &A2, &Ai[6]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[7], &u);
+
+  ge_p2_0(r);
+
+  for (i = 255; i >= 0; --i) {
+    if (aslide[i] || bslide[i]) {
+      break;
+    }
+  }
+
+  for (; i >= 0; --i) {
+    ge_p2_dbl(&t, r);
+
+    if (aslide[i] > 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      x25519_ge_add(&t, &u, &Ai[aslide[i] / 2]);
+    } else if (aslide[i] < 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      x25519_ge_sub(&t, &u, &Ai[(-aslide[i]) / 2]);
+    }
+
+    if (bslide[i] > 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      ge_madd(&t, &u, &Bi[bslide[i] / 2]);
+    } else if (bslide[i] < 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      ge_msub(&t, &u, &Bi[(-bslide[i]) / 2]);
+    }
+
+    x25519_ge_p1p1_to_p2(r, &t);
+  }
+}
+
+// int64_lshift21 returns |a << 21| but is defined when shifting bits into the
+// sign bit. This works around a language flaw in C.
+static inline int64_t int64_lshift21(int64_t a) {
+  return (int64_t)((uint64_t)a << 21);
+}
+
+// The set of scalars is \Z/l
+// where l = 2^252 + 27742317777372353535851937790883648493.
+
+// Input:
+//   s[0]+256*s[1]+...+256^63*s[63] = s
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = s mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+//   Overwrites s in place.
+void x25519_sc_reduce(uint8_t s[64]) {
+  int64_t s0 = 2097151 & load_3(s);
+  int64_t s1 = 2097151 & (load_4(s + 2) >> 5);
+  int64_t s2 = 2097151 & (load_3(s + 5) >> 2);
+  int64_t s3 = 2097151 & (load_4(s + 7) >> 7);
+  int64_t s4 = 2097151 & (load_4(s + 10) >> 4);
+  int64_t s5 = 2097151 & (load_3(s + 13) >> 1);
+  int64_t s6 = 2097151 & (load_4(s + 15) >> 6);
+  int64_t s7 = 2097151 & (load_3(s + 18) >> 3);
+  int64_t s8 = 2097151 & load_3(s + 21);
+  int64_t s9 = 2097151 & (load_4(s + 23) >> 5);
+  int64_t s10 = 2097151 & (load_3(s + 26) >> 2);
+  int64_t s11 = 2097151 & (load_4(s + 28) >> 7);
+  int64_t s12 = 2097151 & (load_4(s + 31) >> 4);
+  int64_t s13 = 2097151 & (load_3(s + 34) >> 1);
+  int64_t s14 = 2097151 & (load_4(s + 36) >> 6);
+  int64_t s15 = 2097151 & (load_3(s + 39) >> 3);
+  int64_t s16 = 2097151 & load_3(s + 42);
+  int64_t s17 = 2097151 & (load_4(s + 44) >> 5);
+  int64_t s18 = 2097151 & (load_3(s + 47) >> 2);
+  int64_t s19 = 2097151 & (load_4(s + 49) >> 7);
+  int64_t s20 = 2097151 & (load_4(s + 52) >> 4);
+  int64_t s21 = 2097151 & (load_3(s + 55) >> 1);
+  int64_t s22 = 2097151 & (load_4(s + 57) >> 6);
+  int64_t s23 = (load_4(s + 60) >> 3);
+  int64_t carry0;
+  int64_t carry1;
+  int64_t carry2;
+  int64_t carry3;
+  int64_t carry4;
+  int64_t carry5;
+  int64_t carry6;
+  int64_t carry7;
+  int64_t carry8;
+  int64_t carry9;
+  int64_t carry10;
+  int64_t carry11;
+  int64_t carry12;
+  int64_t carry13;
+  int64_t carry14;
+  int64_t carry15;
+  int64_t carry16;
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry11 = s11 >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
+
+// Input:
+//   a[0]+256*a[1]+...+256^31*a[31] = a
+//   b[0]+256*b[1]+...+256^31*b[31] = b
+//   c[0]+256*c[1]+...+256^31*c[31] = c
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+static void sc_muladd(uint8_t *s, const uint8_t *a, const uint8_t *b,
+                      const uint8_t *c) {
+  int64_t a0 = 2097151 & load_3(a);
+  int64_t a1 = 2097151 & (load_4(a + 2) >> 5);
+  int64_t a2 = 2097151 & (load_3(a + 5) >> 2);
+  int64_t a3 = 2097151 & (load_4(a + 7) >> 7);
+  int64_t a4 = 2097151 & (load_4(a + 10) >> 4);
+  int64_t a5 = 2097151 & (load_3(a + 13) >> 1);
+  int64_t a6 = 2097151 & (load_4(a + 15) >> 6);
+  int64_t a7 = 2097151 & (load_3(a + 18) >> 3);
+  int64_t a8 = 2097151 & load_3(a + 21);
+  int64_t a9 = 2097151 & (load_4(a + 23) >> 5);
+  int64_t a10 = 2097151 & (load_3(a + 26) >> 2);
+  int64_t a11 = (load_4(a + 28) >> 7);
+  int64_t b0 = 2097151 & load_3(b);
+  int64_t b1 = 2097151 & (load_4(b + 2) >> 5);
+  int64_t b2 = 2097151 & (load_3(b + 5) >> 2);
+  int64_t b3 = 2097151 & (load_4(b + 7) >> 7);
+  int64_t b4 = 2097151 & (load_4(b + 10) >> 4);
+  int64_t b5 = 2097151 & (load_3(b + 13) >> 1);
+  int64_t b6 = 2097151 & (load_4(b + 15) >> 6);
+  int64_t b7 = 2097151 & (load_3(b + 18) >> 3);
+  int64_t b8 = 2097151 & load_3(b + 21);
+  int64_t b9 = 2097151 & (load_4(b + 23) >> 5);
+  int64_t b10 = 2097151 & (load_3(b + 26) >> 2);
+  int64_t b11 = (load_4(b + 28) >> 7);
+  int64_t c0 = 2097151 & load_3(c);
+  int64_t c1 = 2097151 & (load_4(c + 2) >> 5);
+  int64_t c2 = 2097151 & (load_3(c + 5) >> 2);
+  int64_t c3 = 2097151 & (load_4(c + 7) >> 7);
+  int64_t c4 = 2097151 & (load_4(c + 10) >> 4);
+  int64_t c5 = 2097151 & (load_3(c + 13) >> 1);
+  int64_t c6 = 2097151 & (load_4(c + 15) >> 6);
+  int64_t c7 = 2097151 & (load_3(c + 18) >> 3);
+  int64_t c8 = 2097151 & load_3(c + 21);
+  int64_t c9 = 2097151 & (load_4(c + 23) >> 5);
+  int64_t c10 = 2097151 & (load_3(c + 26) >> 2);
+  int64_t c11 = (load_4(c + 28) >> 7);
+  int64_t s0;
+  int64_t s1;
+  int64_t s2;
+  int64_t s3;
+  int64_t s4;
+  int64_t s5;
+  int64_t s6;
+  int64_t s7;
+  int64_t s8;
+  int64_t s9;
+  int64_t s10;
+  int64_t s11;
+  int64_t s12;
+  int64_t s13;
+  int64_t s14;
+  int64_t s15;
+  int64_t s16;
+  int64_t s17;
+  int64_t s18;
+  int64_t s19;
+  int64_t s20;
+  int64_t s21;
+  int64_t s22;
+  int64_t s23;
+  int64_t carry0;
+  int64_t carry1;
+  int64_t carry2;
+  int64_t carry3;
+  int64_t carry4;
+  int64_t carry5;
+  int64_t carry6;
+  int64_t carry7;
+  int64_t carry8;
+  int64_t carry9;
+  int64_t carry10;
+  int64_t carry11;
+  int64_t carry12;
+  int64_t carry13;
+  int64_t carry14;
+  int64_t carry15;
+  int64_t carry16;
+  int64_t carry17;
+  int64_t carry18;
+  int64_t carry19;
+  int64_t carry20;
+  int64_t carry21;
+  int64_t carry22;
+
+  s0 = c0 + a0 * b0;
+  s1 = c1 + a0 * b1 + a1 * b0;
+  s2 = c2 + a0 * b2 + a1 * b1 + a2 * b0;
+  s3 = c3 + a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
+  s4 = c4 + a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0;
+  s5 = c5 + a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0;
+  s6 = c6 + a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0;
+  s7 = c7 + a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 +
+       a6 * b1 + a7 * b0;
+  s8 = c8 + a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 +
+       a6 * b2 + a7 * b1 + a8 * b0;
+  s9 = c9 + a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 +
+       a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0;
+  s10 = c10 + a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 +
+        a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0;
+  s11 = c11 + a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 +
+        a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0;
+  s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 + a7 * b5 +
+        a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1;
+  s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 + a8 * b5 +
+        a9 * b4 + a10 * b3 + a11 * b2;
+  s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 + a9 * b5 +
+        a10 * b4 + a11 * b3;
+  s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 + a10 * b5 +
+        a11 * b4;
+  s16 = a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5;
+  s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6;
+  s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7;
+  s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8;
+  s20 = a9 * b11 + a10 * b10 + a11 * b9;
+  s21 = a10 * b11 + a11 * b10;
+  s22 = a11 * b11;
+  s23 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+  carry18 = (s18 + (1 << 20)) >> 21;
+  s19 += carry18;
+  s18 -= int64_lshift21(carry18);
+  carry20 = (s20 + (1 << 20)) >> 21;
+  s21 += carry20;
+  s20 -= int64_lshift21(carry20);
+  carry22 = (s22 + (1 << 20)) >> 21;
+  s23 += carry22;
+  s22 -= int64_lshift21(carry22);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+  carry17 = (s17 + (1 << 20)) >> 21;
+  s18 += carry17;
+  s17 -= int64_lshift21(carry17);
+  carry19 = (s19 + (1 << 20)) >> 21;
+  s20 += carry19;
+  s19 -= int64_lshift21(carry19);
+  carry21 = (s21 + (1 << 20)) >> 21;
+  s22 += carry21;
+  s21 -= int64_lshift21(carry21);
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry11 = s11 >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
+
+void ED25519_keypair(uint8_t out_public_key[32], uint8_t out_private_key[64]) {
+  uint8_t seed[32];
+  RAND_bytes(seed, 32);
+  ED25519_keypair_from_seed(out_public_key, out_private_key, seed);
+}
+
+int ED25519_sign(uint8_t out_sig[64], const uint8_t *message,
+                 size_t message_len, const uint8_t private_key[64]) {
+  // NOTE: The documentation on this function says that it returns zero on
+  // allocation failure. While that can't happen with the current
+  // implementation, we want to reserve the ability to allocate in this
+  // implementation in the future.
+
+  uint8_t az[SHA512_DIGEST_LENGTH];
+  SHA512(private_key, 32, az);
+
+  az[0] &= 248;
+  az[31] &= 63;
+  az[31] |= 64;
+
+  SHA512_CTX hash_ctx;
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, az + 32, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t nonce[SHA512_DIGEST_LENGTH];
+  SHA512_Final(nonce, &hash_ctx);
+
+  x25519_sc_reduce(nonce);
+  ge_p3 R;
+  x25519_ge_scalarmult_base(&R, nonce);
+  ge_p3_tobytes(out_sig, &R);
+
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, out_sig, 32);
+  SHA512_Update(&hash_ctx, private_key + 32, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t hram[SHA512_DIGEST_LENGTH];
+  SHA512_Final(hram, &hash_ctx);
+
+  x25519_sc_reduce(hram);
+  sc_muladd(out_sig + 32, hram, az, nonce);
+
+  return 1;
+}
+
+int ED25519_verify(const uint8_t *message, size_t message_len,
+                   const uint8_t signature[64], const uint8_t public_key[32]) {
+  ge_p3 A;
+  if ((signature[63] & 224) != 0 ||
+      !x25519_ge_frombytes_vartime(&A, public_key)) {
+    return 0;
+  }
+
+  fe_loose t;
+  fe_neg(&t, &A.X);
+  fe_carry(&A.X, &t);
+  fe_neg(&t, &A.T);
+  fe_carry(&A.T, &t);
+
+  uint8_t pkcopy[32];
+  OPENSSL_memcpy(pkcopy, public_key, 32);
+  uint8_t rcopy[32];
+  OPENSSL_memcpy(rcopy, signature, 32);
+  union {
+    uint64_t u64[4];
+    uint8_t u8[32];
+  } scopy;
+  OPENSSL_memcpy(&scopy.u8[0], signature + 32, 32);
+
+  // https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in
+  // the range [0, order) in order to prevent signature malleability.
+
+  // kOrder is the order of Curve25519 in little-endian form.
+  static const uint64_t kOrder[4] = {
+    UINT64_C(0x5812631a5cf5d3ed),
+    UINT64_C(0x14def9dea2f79cd6),
+    0,
+    UINT64_C(0x1000000000000000),
+  };
+  for (size_t i = 3;; i--) {
+    if (scopy.u64[i] > kOrder[i]) {
+      return 0;
+    } else if (scopy.u64[i] < kOrder[i]) {
+      break;
+    } else if (i == 0) {
+      return 0;
+    }
+  }
+
+  SHA512_CTX hash_ctx;
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, signature, 32);
+  SHA512_Update(&hash_ctx, public_key, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t h[SHA512_DIGEST_LENGTH];
+  SHA512_Final(h, &hash_ctx);
+
+  x25519_sc_reduce(h);
+
+  ge_p2 R;
+  ge_double_scalarmult_vartime(&R, h, &A, scopy.u8);
+
+  uint8_t rcheck[32];
+  x25519_ge_tobytes(rcheck, &R);
+
+  return CRYPTO_memcmp(rcheck, rcopy, sizeof(rcheck)) == 0;
+}
+
+void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+                               uint8_t out_private_key[64],
+                               const uint8_t seed[32]) {
+  uint8_t az[SHA512_DIGEST_LENGTH];
+  SHA512(seed, 32, az);
+
+  az[0] &= 248;
+  az[31] &= 127;
+  az[31] |= 64;
+
+  ge_p3 A;
+  x25519_ge_scalarmult_base(&A, az);
+  ge_p3_tobytes(out_public_key, &A);
+
+  OPENSSL_memcpy(out_private_key, seed, 32);
+  OPENSSL_memcpy(out_private_key + 32, out_public_key, 32);
+}
+
+
+static void x25519_scalar_mult_generic(uint8_t out[32],
+                                       const uint8_t scalar[32],
+                                       const uint8_t point[32]) {
+  fe x1, x2, z2, x3, z3, tmp0, tmp1;
+  fe_loose x2l, z2l, x3l, tmp0l, tmp1l;
+
+  uint8_t e[32];
+  OPENSSL_memcpy(e, scalar, 32);
+  e[0] &= 248;
+  e[31] &= 127;
+  e[31] |= 64;
+
+  // The following implementation was transcribed to Coq and proven to
+  // correspond to unary scalar multiplication in affine coordinates given that
+  // x1 != 0 is the x coordinate of some point on the curve. It was also checked
+  // in Coq that doing a ladderstep with x1 = x3 = 0 gives z2' = z3' = 0, and z2
+  // = z3 = 0 gives z2' = z3' = 0. The statement was quantified over the
+  // underlying field, so it applies to Curve25519 itself and the quadratic
+  // twist of Curve25519. It was not proven in Coq that prime-field arithmetic
+  // correctly simulates extension-field arithmetic on prime-field values.
+  // The decoding of the byte array representation of e was not considered.
+  // Specification of Montgomery curves in affine coordinates:
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Spec/MontgomeryCurve.v#L27>
+  // Proof that these form a group that is isomorphic to a Weierstrass curve:
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/AffineProofs.v#L35>
+  // Coq transcription and correctness proof of the loop (where scalarbits=255):
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZ.v#L118>
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L278>
+  // preconditions: 0 <= e < 2^255 (not necessarily e < order), fe_invert(0) = 0
+  fe_frombytes(&x1, point);
+  fe_1(&x2);
+  fe_0(&z2);
+  fe_copy(&x3, &x1);
+  fe_1(&z3);
+
+  unsigned swap = 0;
+  int pos;
+  for (pos = 254; pos >= 0; --pos) {
+    // loop invariant as of right before the test, for the case where x1 != 0:
+    //   pos >= -1; if z2 = 0 then x2 is nonzero; if z3 = 0 then x3 is nonzero
+    //   let r := e >> (pos+1) in the following equalities of projective points:
+    //   to_xz (r*P)     === if swap then (x3, z3) else (x2, z2)
+    //   to_xz ((r+1)*P) === if swap then (x2, z2) else (x3, z3)
+    //   x1 is the nonzero x coordinate of the nonzero point (r*P-(r+1)*P)
+    unsigned b = 1 & (e[pos / 8] >> (pos & 7));
+    swap ^= b;
+    fe_cswap(&x2, &x3, swap);
+    fe_cswap(&z2, &z3, swap);
+    swap = b;
+    // Coq transcription of ladderstep formula (called from transcribed loop):
+    // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZ.v#L89>
+    // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L131>
+    // x1 != 0 <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L217>
+    // x1  = 0 <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L147>
+    fe_sub(&tmp0l, &x3, &z3);
+    fe_sub(&tmp1l, &x2, &z2);
+    fe_add(&x2l, &x2, &z2);
+    fe_add(&z2l, &x3, &z3);
+    fe_mul_tll(&z3, &tmp0l, &x2l);
+    fe_mul_tll(&z2, &z2l, &tmp1l);
+    fe_sq_tl(&tmp0, &tmp1l);
+    fe_sq_tl(&tmp1, &x2l);
+    fe_add(&x3l, &z3, &z2);
+    fe_sub(&z2l, &z3, &z2);
+    fe_mul_ttt(&x2, &tmp1, &tmp0);
+    fe_sub(&tmp1l, &tmp1, &tmp0);
+    fe_sq_tl(&z2, &z2l);
+    fe_mul121666(&z3, &tmp1l);
+    fe_sq_tl(&x3, &x3l);
+    fe_add(&tmp0l, &tmp0, &z3);
+    fe_mul_ttt(&z3, &x1, &z2);
+    fe_mul_tll(&z2, &tmp1l, &tmp0l);
+  }
+  // here pos=-1, so r=e, so to_xz (e*P) === if swap then (x3, z3) else (x2, z2)
+  fe_cswap(&x2, &x3, swap);
+  fe_cswap(&z2, &z3, swap);
+
+  fe_invert(&z2, &z2);
+  fe_mul_ttt(&x2, &x2, &z2);
+  fe_tobytes(out, &x2);
+}
+
+static void x25519_scalar_mult(uint8_t out[32], const uint8_t scalar[32],
+                               const uint8_t point[32]) {
+#if defined(BORINGSSL_X25519_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    x25519_NEON(out, scalar, point);
+    return;
+  }
+#endif
+
+  x25519_scalar_mult_generic(out, scalar, point);
+}
+
+void X25519_keypair(uint8_t out_public_value[32], uint8_t out_private_key[32]) {
+  RAND_bytes(out_private_key, 32);
+
+  // All X25519 implementations should decode scalars correctly (see
+  // https://tools.ietf.org/html/rfc7748#section-5). However, if an
+  // implementation doesn't then it might interoperate with random keys a
+  // fraction of the time because they'll, randomly, happen to be correctly
+  // formed.
+  //
+  // Thus we do the opposite of the masking here to make sure that our private
+  // keys are never correctly masked and so, hopefully, any incorrect
+  // implementations are deterministically broken.
+  //
+  // This does not affect security because, although we're throwing away
+  // entropy, a valid implementation of scalarmult should throw away the exact
+  // same bits anyway.
+  out_private_key[0] |= ~248;
+  out_private_key[31] &= ~64;
+  out_private_key[31] |= ~127;
+
+  X25519_public_from_private(out_public_value, out_private_key);
+}
+
+int X25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
+           const uint8_t peer_public_value[32]) {
+  static const uint8_t kZeros[32] = {0};
+  x25519_scalar_mult(out_shared_key, private_key, peer_public_value);
+  // The all-zero output results when the input is a point of small order.
+  return CRYPTO_memcmp(kZeros, out_shared_key, 32) != 0;
+}
+
+void X25519_public_from_private(uint8_t out_public_value[32],
+                                const uint8_t private_key[32]) {
+#if defined(BORINGSSL_X25519_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    static const uint8_t kMongomeryBasePoint[32] = {9};
+    x25519_NEON(out_public_value, private_key, kMongomeryBasePoint);
+    return;
+  }
+#endif
+
+  uint8_t e[32];
+  OPENSSL_memcpy(e, private_key, 32);
+  e[0] &= 248;
+  e[31] &= 127;
+  e[31] |= 64;
+
+  ge_p3 A;
+  x25519_ge_scalarmult_base(&A, e);
+
+  // We only need the u-coordinate of the curve25519 point. The map is
+  // u=(y+1)/(1-y). Since y=Y/Z, this gives u=(Z+Y)/(Z-Y).
+  fe_loose zplusy, zminusy;
+  fe zminusy_inv;
+  fe_add(&zplusy, &A.Z, &A.Y);
+  fe_sub(&zminusy, &A.Z, &A.Y);
+  fe_loose_invert(&zminusy_inv, &zminusy);
+  fe_mul_tlt(&zminusy_inv, &zplusy, &zminusy_inv);
+  fe_tobytes(out_public_value, &zminusy_inv);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c.grpc_back
new file mode 100644
index 0000000..564becb
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519.c.grpc_back	
@@ -0,0 +1,2167 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// Some of this code is taken from the ref10 version of Ed25519 in SUPERCOP
+// 20141124 (http://bench.cr.yp.to/supercop.html). That code is released as
+// public domain but parts have been replaced with code generated by Fiat
+// (https://github.com/mit-plv/fiat-crypto), which is MIT licensed.
+//
+// The field functions are shared by Ed25519 and X25519 where possible.
+
+#include <openssl/curve25519.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/cpu.h>
+#include <openssl/mem.h>
+#include <openssl/rand.h>
+#include <openssl/sha.h>
+#include <openssl/type_check.h>
+
+#include "internal.h"
+#include "../../crypto/internal.h"
+
+
+// Various pre-computed constants.
+#include "./curve25519_tables.h"
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+#include "./curve25519_64.h"
+#else
+#include "./curve25519_32.h"
+#endif  // BORINGSSL_CURVE25519_64BIT
+
+
+// Low-level intrinsic operations
+
+static uint64_t load_3(const uint8_t *in) {
+  uint64_t result;
+  result = (uint64_t)in[0];
+  result |= ((uint64_t)in[1]) << 8;
+  result |= ((uint64_t)in[2]) << 16;
+  return result;
+}
+
+static uint64_t load_4(const uint8_t *in) {
+  uint64_t result;
+  result = (uint64_t)in[0];
+  result |= ((uint64_t)in[1]) << 8;
+  result |= ((uint64_t)in[2]) << 16;
+  result |= ((uint64_t)in[3]) << 24;
+  return result;
+}
+
+
+// Field operations.
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+
+typedef uint64_t fe_limb_t;
+#define FE_NUM_LIMBS 5
+
+// assert_fe asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc],
+//   [0x0 ~> 0x8cccccccccccc]]
+//
+// See comments in curve25519_64.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe(f)                                                    \
+  do {                                                                  \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 5; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <= UINT64_C(0x8cccccccccccc));             \
+    }                                                                   \
+  } while (0)
+
+// assert_fe_loose asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664],
+//   [0x0 ~> 0x1a666666666664]]
+//
+// See comments in curve25519_64.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe_loose(f)                                              \
+  do {                                                                  \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 5; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <= UINT64_C(0x1a666666666664));            \
+    }                                                                   \
+  } while (0)
+
+#else
+
+typedef uint32_t fe_limb_t;
+#define FE_NUM_LIMBS 10
+
+// assert_fe asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333],
+//   [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+//
+// See comments in curve25519_32.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe(f)                                                     \
+  do {                                                                   \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 10; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <=                                          \
+             ((_assert_fe_i & 1) ? 0x2333333u : 0x4666666u));            \
+    }                                                                    \
+  } while (0)
+
+// assert_fe_loose asserts that |f| satisfies bounds:
+//
+//  [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999],
+//   [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+//
+// See comments in curve25519_32.h for which functions use these bounds for
+// inputs or outputs.
+#define assert_fe_loose(f)                                               \
+  do {                                                                   \
+    for (unsigned _assert_fe_i = 0; _assert_fe_i < 10; _assert_fe_i++) { \
+      assert(f[_assert_fe_i] <=                                          \
+             ((_assert_fe_i & 1) ? 0x6999999u : 0xd333332u));            \
+    }                                                                    \
+  } while (0)
+
+#endif  // BORINGSSL_CURVE25519_64BIT
+
+OPENSSL_STATIC_ASSERT(sizeof(fe) == sizeof(fe_limb_t) * FE_NUM_LIMBS,
+                      "fe_limb_t[FE_NUM_LIMBS] is inconsistent with fe");
+
+static void fe_frombytes_strict(fe *h, const uint8_t s[32]) {
+  // |fiat_25519_from_bytes| requires the top-most bit be clear.
+  assert((s[31] & 0x80) == 0);
+  fiat_25519_from_bytes(h->v, s);
+  assert_fe(h->v);
+}
+
+static void fe_frombytes(fe *h, const uint8_t s[32]) {
+  uint8_t s_copy[32];
+  OPENSSL_memcpy(s_copy, s, 32);
+  s_copy[31] &= 0x7f;
+  fe_frombytes_strict(h, s_copy);
+}
+
+static void fe_tobytes(uint8_t s[32], const fe *f) {
+  assert_fe(f->v);
+  fiat_25519_to_bytes(s, f->v);
+}
+
+// h = 0
+static void fe_0(fe *h) {
+  OPENSSL_memset(h, 0, sizeof(fe));
+}
+
+static void fe_loose_0(fe_loose *h) {
+  OPENSSL_memset(h, 0, sizeof(fe_loose));
+}
+
+// h = 1
+static void fe_1(fe *h) {
+  OPENSSL_memset(h, 0, sizeof(fe));
+  h->v[0] = 1;
+}
+
+static void fe_loose_1(fe_loose *h) {
+  OPENSSL_memset(h, 0, sizeof(fe_loose));
+  h->v[0] = 1;
+}
+
+// h = f + g
+// Can overlap h with f or g.
+static void fe_add(fe_loose *h, const fe *f, const fe *g) {
+  assert_fe(f->v);
+  assert_fe(g->v);
+  fiat_25519_add(h->v, f->v, g->v);
+  assert_fe_loose(h->v);
+}
+
+// h = f - g
+// Can overlap h with f or g.
+static void fe_sub(fe_loose *h, const fe *f, const fe *g) {
+  assert_fe(f->v);
+  assert_fe(g->v);
+  fiat_25519_sub(h->v, f->v, g->v);
+  assert_fe_loose(h->v);
+}
+
+static void fe_carry(fe *h, const fe_loose* f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry(h->v, f->v);
+  assert_fe(h->v);
+}
+
+static void fe_mul_impl(fe_limb_t out[FE_NUM_LIMBS],
+                        const fe_limb_t in1[FE_NUM_LIMBS],
+                        const fe_limb_t in2[FE_NUM_LIMBS]) {
+  assert_fe_loose(in1);
+  assert_fe_loose(in2);
+  fiat_25519_carry_mul(out, in1, in2);
+  assert_fe(out);
+}
+
+static void fe_mul_ltt(fe_loose *h, const fe *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_llt(fe_loose *h, const fe_loose *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_ttt(fe *h, const fe *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_tlt(fe *h, const fe_loose *f, const fe *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_ttl(fe *h, const fe *f, const fe_loose *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_mul_tll(fe *h, const fe_loose *f, const fe_loose *g) {
+  fe_mul_impl(h->v, f->v, g->v);
+}
+
+static void fe_sq_tl(fe *h, const fe_loose *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_square(h->v, f->v);
+  assert_fe(h->v);
+}
+
+static void fe_sq_tt(fe *h, const fe *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_square(h->v, f->v);
+  assert_fe(h->v);
+}
+
+// Replace (f,g) with (g,f) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+static void fe_cswap(fe *f, fe *g, fe_limb_t b) {
+  b = 0-b;
+  for (unsigned i = 0; i < FE_NUM_LIMBS; i++) {
+    fe_limb_t x = f->v[i] ^ g->v[i];
+    x &= b;
+    f->v[i] ^= x;
+    g->v[i] ^= x;
+  }
+}
+
+static void fe_mul121666(fe *h, const fe_loose *f) {
+  assert_fe_loose(f->v);
+  fiat_25519_carry_scmul_121666(h->v, f->v);
+  assert_fe(h->v);
+}
+
+// h = -f
+static void fe_neg(fe_loose *h, const fe *f) {
+  assert_fe(f->v);
+  fiat_25519_opp(h->v, f->v);
+  assert_fe_loose(h->v);
+}
+
+// Replace (f,g) with (g,g) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+static void fe_cmov(fe_loose *f, const fe_loose *g, fe_limb_t b) {
+  // Silence an unused function warning. |fiat_25519_selectznz| isn't quite the
+  // calling convention the rest of this code wants, so implement it by hand.
+  //
+  // TODO(davidben): Switch to fiat's calling convention, or ask fiat to emit a
+  // different one.
+  (void)fiat_25519_selectznz;
+
+  b = 0-b;
+  for (unsigned i = 0; i < FE_NUM_LIMBS; i++) {
+    fe_limb_t x = f->v[i] ^ g->v[i];
+    x &= b;
+    f->v[i] ^= x;
+  }
+}
+
+// h = f
+static void fe_copy(fe *h, const fe *f) {
+  OPENSSL_memmove(h, f, sizeof(fe));
+}
+
+static void fe_copy_lt(fe_loose *h, const fe *f) {
+  OPENSSL_STATIC_ASSERT(sizeof(fe_loose) == sizeof(fe),
+                        "fe and fe_loose mismatch");
+  OPENSSL_memmove(h, f, sizeof(fe));
+}
+#if !defined(OPENSSL_SMALL)
+static void fe_copy_ll(fe_loose *h, const fe_loose *f) {
+  OPENSSL_memmove(h, f, sizeof(fe_loose));
+}
+#endif // !defined(OPENSSL_SMALL)
+
+static void fe_loose_invert(fe *out, const fe_loose *z) {
+  fe t0;
+  fe t1;
+  fe t2;
+  fe t3;
+  int i;
+
+  fe_sq_tl(&t0, z);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_tlt(&t1, z, &t1);
+  fe_mul_ttt(&t0, &t0, &t1);
+  fe_sq_tt(&t2, &t0);
+  fe_mul_ttt(&t1, &t1, &t2);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t2, &t2, &t1);
+  fe_sq_tt(&t3, &t2);
+  for (i = 1; i < 20; ++i) {
+    fe_sq_tt(&t3, &t3);
+  }
+  fe_mul_ttt(&t2, &t3, &t2);
+  fe_sq_tt(&t2, &t2);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t2, &t2, &t1);
+  fe_sq_tt(&t3, &t2);
+  for (i = 1; i < 100; ++i) {
+    fe_sq_tt(&t3, &t3);
+  }
+  fe_mul_ttt(&t2, &t3, &t2);
+  fe_sq_tt(&t2, &t2);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(out, &t1, &t0);
+}
+
+static void fe_invert(fe *out, const fe *z) {
+  fe_loose l;
+  fe_copy_lt(&l, z);
+  fe_loose_invert(out, &l);
+}
+
+// return 0 if f == 0
+// return 1 if f != 0
+static int fe_isnonzero(const fe_loose *f) {
+  fe tight;
+  fe_carry(&tight, f);
+  uint8_t s[32];
+  fe_tobytes(s, &tight);
+
+  static const uint8_t zero[32] = {0};
+  return CRYPTO_memcmp(s, zero, sizeof(zero)) != 0;
+}
+
+// return 1 if f is in {1,3,5,...,q-2}
+// return 0 if f is in {0,2,4,...,q-1}
+static int fe_isnegative(const fe *f) {
+  uint8_t s[32];
+  fe_tobytes(s, f);
+  return s[0] & 1;
+}
+
+static void fe_sq2_tt(fe *h, const fe *f) {
+  // h = f^2
+  fe_sq_tt(h, f);
+
+  // h = h + h
+  fe_loose tmp;
+  fe_add(&tmp, h, h);
+  fe_carry(h, &tmp);
+}
+
+static void fe_pow22523(fe *out, const fe *z) {
+  fe t0;
+  fe t1;
+  fe t2;
+  int i;
+
+  fe_sq_tt(&t0, z);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, z, &t1);
+  fe_mul_ttt(&t0, &t0, &t1);
+  fe_sq_tt(&t0, &t0);
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 5; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, &t1, &t0);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 20; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 10; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t1, &t0);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t1, &t1, &t0);
+  fe_sq_tt(&t2, &t1);
+  for (i = 1; i < 100; ++i) {
+    fe_sq_tt(&t2, &t2);
+  }
+  fe_mul_ttt(&t1, &t2, &t1);
+  fe_sq_tt(&t1, &t1);
+  for (i = 1; i < 50; ++i) {
+    fe_sq_tt(&t1, &t1);
+  }
+  fe_mul_ttt(&t0, &t1, &t0);
+  fe_sq_tt(&t0, &t0);
+  for (i = 1; i < 2; ++i) {
+    fe_sq_tt(&t0, &t0);
+  }
+  fe_mul_ttt(out, &t0, z);
+}
+
+
+// Group operations.
+
+void x25519_ge_tobytes(uint8_t s[32], const ge_p2 *h) {
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(&recip, &h->Z);
+  fe_mul_ttt(&x, &h->X, &recip);
+  fe_mul_ttt(&y, &h->Y, &recip);
+  fe_tobytes(s, &y);
+  s[31] ^= fe_isnegative(&x) << 7;
+}
+
+static void ge_p3_tobytes(uint8_t s[32], const ge_p3 *h) {
+  fe recip;
+  fe x;
+  fe y;
+
+  fe_invert(&recip, &h->Z);
+  fe_mul_ttt(&x, &h->X, &recip);
+  fe_mul_ttt(&y, &h->Y, &recip);
+  fe_tobytes(s, &y);
+  s[31] ^= fe_isnegative(&x) << 7;
+}
+
+int x25519_ge_frombytes_vartime(ge_p3 *h, const uint8_t s[32]) {
+  fe u;
+  fe_loose v;
+  fe v3;
+  fe vxx;
+  fe_loose check;
+
+  fe_frombytes(&h->Y, s);
+  fe_1(&h->Z);
+  fe_sq_tt(&v3, &h->Y);
+  fe_mul_ttt(&vxx, &v3, &d);
+  fe_sub(&v, &v3, &h->Z);  // u = y^2-1
+  fe_carry(&u, &v);
+  fe_add(&v, &vxx, &h->Z);  // v = dy^2+1
+
+  fe_sq_tl(&v3, &v);
+  fe_mul_ttl(&v3, &v3, &v);  // v3 = v^3
+  fe_sq_tt(&h->X, &v3);
+  fe_mul_ttl(&h->X, &h->X, &v);
+  fe_mul_ttt(&h->X, &h->X, &u);  // x = uv^7
+
+  fe_pow22523(&h->X, &h->X);  // x = (uv^7)^((q-5)/8)
+  fe_mul_ttt(&h->X, &h->X, &v3);
+  fe_mul_ttt(&h->X, &h->X, &u);  // x = uv^3(uv^7)^((q-5)/8)
+
+  fe_sq_tt(&vxx, &h->X);
+  fe_mul_ttl(&vxx, &vxx, &v);
+  fe_sub(&check, &vxx, &u);
+  if (fe_isnonzero(&check)) {
+    fe_add(&check, &vxx, &u);
+    if (fe_isnonzero(&check)) {
+      return 0;
+    }
+    fe_mul_ttt(&h->X, &h->X, &sqrtm1);
+  }
+
+  if (fe_isnegative(&h->X) != (s[31] >> 7)) {
+    fe_loose t;
+    fe_neg(&t, &h->X);
+    fe_carry(&h->X, &t);
+  }
+
+  fe_mul_ttt(&h->T, &h->X, &h->Y);
+  return 1;
+}
+
+static void ge_p2_0(ge_p2 *h) {
+  fe_0(&h->X);
+  fe_1(&h->Y);
+  fe_1(&h->Z);
+}
+
+static void ge_p3_0(ge_p3 *h) {
+  fe_0(&h->X);
+  fe_1(&h->Y);
+  fe_1(&h->Z);
+  fe_0(&h->T);
+}
+
+static void ge_cached_0(ge_cached *h) {
+  fe_loose_1(&h->YplusX);
+  fe_loose_1(&h->YminusX);
+  fe_loose_1(&h->Z);
+  fe_loose_0(&h->T2d);
+}
+
+static void ge_precomp_0(ge_precomp *h) {
+  fe_loose_1(&h->yplusx);
+  fe_loose_1(&h->yminusx);
+  fe_loose_0(&h->xy2d);
+}
+
+// r = p
+static void ge_p3_to_p2(ge_p2 *r, const ge_p3 *p) {
+  fe_copy(&r->X, &p->X);
+  fe_copy(&r->Y, &p->Y);
+  fe_copy(&r->Z, &p->Z);
+}
+
+// r = p
+void x25519_ge_p3_to_cached(ge_cached *r, const ge_p3 *p) {
+  fe_add(&r->YplusX, &p->Y, &p->X);
+  fe_sub(&r->YminusX, &p->Y, &p->X);
+  fe_copy_lt(&r->Z, &p->Z);
+  fe_mul_ltt(&r->T2d, &p->T, &d2);
+}
+
+// r = p
+void x25519_ge_p1p1_to_p2(ge_p2 *r, const ge_p1p1 *p) {
+  fe_mul_tll(&r->X, &p->X, &p->T);
+  fe_mul_tll(&r->Y, &p->Y, &p->Z);
+  fe_mul_tll(&r->Z, &p->Z, &p->T);
+}
+
+// r = p
+void x25519_ge_p1p1_to_p3(ge_p3 *r, const ge_p1p1 *p) {
+  fe_mul_tll(&r->X, &p->X, &p->T);
+  fe_mul_tll(&r->Y, &p->Y, &p->Z);
+  fe_mul_tll(&r->Z, &p->Z, &p->T);
+  fe_mul_tll(&r->T, &p->X, &p->Y);
+}
+
+// r = p
+static void ge_p1p1_to_cached(ge_cached *r, const ge_p1p1 *p) {
+  ge_p3 t;
+  x25519_ge_p1p1_to_p3(&t, p);
+  x25519_ge_p3_to_cached(r, &t);
+}
+
+// r = 2 * p
+static void ge_p2_dbl(ge_p1p1 *r, const ge_p2 *p) {
+  fe trX, trZ, trT;
+  fe t0;
+
+  fe_sq_tt(&trX, &p->X);
+  fe_sq_tt(&trZ, &p->Y);
+  fe_sq2_tt(&trT, &p->Z);
+  fe_add(&r->Y, &p->X, &p->Y);
+  fe_sq_tl(&t0, &r->Y);
+
+  fe_add(&r->Y, &trZ, &trX);
+  fe_sub(&r->Z, &trZ, &trX);
+  fe_carry(&trZ, &r->Y);
+  fe_sub(&r->X, &t0, &trZ);
+  fe_carry(&trZ, &r->Z);
+  fe_sub(&r->T, &trT, &trZ);
+}
+
+// r = 2 * p
+static void ge_p3_dbl(ge_p1p1 *r, const ge_p3 *p) {
+  ge_p2 q;
+  ge_p3_to_p2(&q, p);
+  ge_p2_dbl(r, &q);
+}
+
+// r = p + q
+static void ge_madd(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q) {
+  fe trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->yplusx);
+  fe_mul_tll(&trY, &r->Y, &q->yminusx);
+  fe_mul_tlt(&trT, &q->xy2d, &p->T);
+  fe_add(&r->T, &p->Z, &p->Z);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_add(&r->Z, &trZ, &trT);
+  fe_sub(&r->T, &trZ, &trT);
+}
+
+// r = p - q
+static void ge_msub(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q) {
+  fe trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->yminusx);
+  fe_mul_tll(&trY, &r->Y, &q->yplusx);
+  fe_mul_tlt(&trT, &q->xy2d, &p->T);
+  fe_add(&r->T, &p->Z, &p->Z);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_sub(&r->Z, &trZ, &trT);
+  fe_add(&r->T, &trZ, &trT);
+}
+
+// r = p + q
+void x25519_ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q) {
+  fe trX, trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->YplusX);
+  fe_mul_tll(&trY, &r->Y, &q->YminusX);
+  fe_mul_tlt(&trT, &q->T2d, &p->T);
+  fe_mul_ttl(&trX, &p->Z, &q->Z);
+  fe_add(&r->T, &trX, &trX);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_add(&r->Z, &trZ, &trT);
+  fe_sub(&r->T, &trZ, &trT);
+}
+
+// r = p - q
+void x25519_ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q) {
+  fe trX, trY, trZ, trT;
+
+  fe_add(&r->X, &p->Y, &p->X);
+  fe_sub(&r->Y, &p->Y, &p->X);
+  fe_mul_tll(&trZ, &r->X, &q->YminusX);
+  fe_mul_tll(&trY, &r->Y, &q->YplusX);
+  fe_mul_tlt(&trT, &q->T2d, &p->T);
+  fe_mul_ttl(&trX, &p->Z, &q->Z);
+  fe_add(&r->T, &trX, &trX);
+  fe_sub(&r->X, &trZ, &trY);
+  fe_add(&r->Y, &trZ, &trY);
+  fe_carry(&trZ, &r->T);
+  fe_sub(&r->Z, &trZ, &trT);
+  fe_add(&r->T, &trZ, &trT);
+}
+
+static uint8_t equal(signed char b, signed char c) {
+  uint8_t ub = b;
+  uint8_t uc = c;
+  uint8_t x = ub ^ uc;  // 0: yes; 1..255: no
+  uint32_t y = x;       // 0: yes; 1..255: no
+  y -= 1;               // 4294967295: yes; 0..254: no
+  y >>= 31;             // 1: yes; 0: no
+  return y;
+}
+
+static void cmov(ge_precomp *t, const ge_precomp *u, uint8_t b) {
+  fe_cmov(&t->yplusx, &u->yplusx, b);
+  fe_cmov(&t->yminusx, &u->yminusx, b);
+  fe_cmov(&t->xy2d, &u->xy2d, b);
+}
+
+void x25519_ge_scalarmult_small_precomp(
+    ge_p3 *h, const uint8_t a[32], const uint8_t precomp_table[15 * 2 * 32]) {
+  // precomp_table is first expanded into matching |ge_precomp|
+  // elements.
+  ge_precomp multiples[15];
+
+  unsigned i;
+  for (i = 0; i < 15; i++) {
+    // The precomputed table is assumed to already clear the top bit, so
+    // |fe_frombytes_strict| may be used directly.
+    const uint8_t *bytes = &precomp_table[i*(2 * 32)];
+    fe x, y;
+    fe_frombytes_strict(&x, bytes);
+    fe_frombytes_strict(&y, bytes + 32);
+
+    ge_precomp *out = &multiples[i];
+    fe_add(&out->yplusx, &y, &x);
+    fe_sub(&out->yminusx, &y, &x);
+    fe_mul_ltt(&out->xy2d, &x, &y);
+    fe_mul_llt(&out->xy2d, &out->xy2d, &d2);
+  }
+
+  // See the comment above |k25519SmallPrecomp| about the structure of the
+  // precomputed elements. This loop does 64 additions and 64 doublings to
+  // calculate the result.
+  ge_p3_0(h);
+
+  for (i = 63; i < 64; i--) {
+    unsigned j;
+    signed char index = 0;
+
+    for (j = 0; j < 4; j++) {
+      const uint8_t bit = 1 & (a[(8 * j) + (i / 8)] >> (i & 7));
+      index |= (bit << j);
+    }
+
+    ge_precomp e;
+    ge_precomp_0(&e);
+
+    for (j = 1; j < 16; j++) {
+      cmov(&e, &multiples[j-1], equal(index, j));
+    }
+
+    ge_cached cached;
+    ge_p1p1 r;
+    x25519_ge_p3_to_cached(&cached, h);
+    x25519_ge_add(&r, h, &cached);
+    x25519_ge_p1p1_to_p3(h, &r);
+
+    ge_madd(&r, h, &e);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+}
+
+#if defined(OPENSSL_SMALL)
+
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t a[32]) {
+  x25519_ge_scalarmult_small_precomp(h, a, k25519SmallPrecomp);
+}
+
+#else
+
+static uint8_t negative(signed char b) {
+  uint32_t x = b;
+  x >>= 31;  // 1: yes; 0: no
+  return x;
+}
+
+static void table_select(ge_precomp *t, int pos, signed char b) {
+  ge_precomp minust;
+  uint8_t bnegative = negative(b);
+  uint8_t babs = b - ((uint8_t)((-bnegative) & b) << 1);
+
+  ge_precomp_0(t);
+  cmov(t, &k25519Precomp[pos][0], equal(babs, 1));
+  cmov(t, &k25519Precomp[pos][1], equal(babs, 2));
+  cmov(t, &k25519Precomp[pos][2], equal(babs, 3));
+  cmov(t, &k25519Precomp[pos][3], equal(babs, 4));
+  cmov(t, &k25519Precomp[pos][4], equal(babs, 5));
+  cmov(t, &k25519Precomp[pos][5], equal(babs, 6));
+  cmov(t, &k25519Precomp[pos][6], equal(babs, 7));
+  cmov(t, &k25519Precomp[pos][7], equal(babs, 8));
+  fe_copy_ll(&minust.yplusx, &t->yminusx);
+  fe_copy_ll(&minust.yminusx, &t->yplusx);
+
+  // NOTE: the input table is canonical, but types don't encode it
+  fe tmp;
+  fe_carry(&tmp, &t->xy2d);
+  fe_neg(&minust.xy2d, &tmp);
+
+  cmov(t, &minust, bnegative);
+}
+
+// h = a * B
+// where a = a[0]+256*a[1]+...+256^31 a[31]
+// B is the Ed25519 base point (x,4/5) with x positive.
+//
+// Preconditions:
+//   a[31] <= 127
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t *a) {
+  signed char e[64];
+  signed char carry;
+  ge_p1p1 r;
+  ge_p2 s;
+  ge_precomp t;
+  int i;
+
+  for (i = 0; i < 32; ++i) {
+    e[2 * i + 0] = (a[i] >> 0) & 15;
+    e[2 * i + 1] = (a[i] >> 4) & 15;
+  }
+  // each e[i] is between 0 and 15
+  // e[63] is between 0 and 7
+
+  carry = 0;
+  for (i = 0; i < 63; ++i) {
+    e[i] += carry;
+    carry = e[i] + 8;
+    carry >>= 4;
+    e[i] -= carry << 4;
+  }
+  e[63] += carry;
+  // each e[i] is between -8 and 8
+
+  ge_p3_0(h);
+  for (i = 1; i < 64; i += 2) {
+    table_select(&t, i / 2, e[i]);
+    ge_madd(&r, h, &t);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+
+  ge_p3_dbl(&r, h);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p2(&s, &r);
+  ge_p2_dbl(&r, &s);
+  x25519_ge_p1p1_to_p3(h, &r);
+
+  for (i = 0; i < 64; i += 2) {
+    table_select(&t, i / 2, e[i]);
+    ge_madd(&r, h, &t);
+    x25519_ge_p1p1_to_p3(h, &r);
+  }
+}
+
+#endif
+
+static void cmov_cached(ge_cached *t, ge_cached *u, uint8_t b) {
+  fe_cmov(&t->YplusX, &u->YplusX, b);
+  fe_cmov(&t->YminusX, &u->YminusX, b);
+  fe_cmov(&t->Z, &u->Z, b);
+  fe_cmov(&t->T2d, &u->T2d, b);
+}
+
+// r = scalar * A.
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+void x25519_ge_scalarmult(ge_p2 *r, const uint8_t *scalar, const ge_p3 *A) {
+  ge_p2 Ai_p2[8];
+  ge_cached Ai[16];
+  ge_p1p1 t;
+
+  ge_cached_0(&Ai[0]);
+  x25519_ge_p3_to_cached(&Ai[1], A);
+  ge_p3_to_p2(&Ai_p2[1], A);
+
+  unsigned i;
+  for (i = 2; i < 16; i += 2) {
+    ge_p2_dbl(&t, &Ai_p2[i / 2]);
+    ge_p1p1_to_cached(&Ai[i], &t);
+    if (i < 8) {
+      x25519_ge_p1p1_to_p2(&Ai_p2[i], &t);
+    }
+    x25519_ge_add(&t, A, &Ai[i]);
+    ge_p1p1_to_cached(&Ai[i + 1], &t);
+    if (i < 7) {
+      x25519_ge_p1p1_to_p2(&Ai_p2[i + 1], &t);
+    }
+  }
+
+  ge_p2_0(r);
+  ge_p3 u;
+
+  for (i = 0; i < 256; i += 4) {
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p2(r, &t);
+    ge_p2_dbl(&t, r);
+    x25519_ge_p1p1_to_p3(&u, &t);
+
+    uint8_t index = scalar[31 - i/8];
+    index >>= 4 - (i & 4);
+    index &= 0xf;
+
+    unsigned j;
+    ge_cached selected;
+    ge_cached_0(&selected);
+    for (j = 0; j < 16; j++) {
+      cmov_cached(&selected, &Ai[j], equal(j, index));
+    }
+
+    x25519_ge_add(&t, &u, &selected);
+    x25519_ge_p1p1_to_p2(r, &t);
+  }
+}
+
+static void slide(signed char *r, const uint8_t *a) {
+  int i;
+  int b;
+  int k;
+
+  for (i = 0; i < 256; ++i) {
+    r[i] = 1 & (a[i >> 3] >> (i & 7));
+  }
+
+  for (i = 0; i < 256; ++i) {
+    if (r[i]) {
+      for (b = 1; b <= 6 && i + b < 256; ++b) {
+        if (r[i + b]) {
+          if (r[i] + (r[i + b] << b) <= 15) {
+            r[i] += r[i + b] << b;
+            r[i + b] = 0;
+          } else if (r[i] - (r[i + b] << b) >= -15) {
+            r[i] -= r[i + b] << b;
+            for (k = i + b; k < 256; ++k) {
+              if (!r[k]) {
+                r[k] = 1;
+                break;
+              }
+              r[k] = 0;
+            }
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+}
+
+// r = a * A + b * B
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+// and b = b[0]+256*b[1]+...+256^31 b[31].
+// B is the Ed25519 base point (x,4/5) with x positive.
+static void ge_double_scalarmult_vartime(ge_p2 *r, const uint8_t *a,
+                                         const ge_p3 *A, const uint8_t *b) {
+  signed char aslide[256];
+  signed char bslide[256];
+  ge_cached Ai[8];  // A,3A,5A,7A,9A,11A,13A,15A
+  ge_p1p1 t;
+  ge_p3 u;
+  ge_p3 A2;
+  int i;
+
+  slide(aslide, a);
+  slide(bslide, b);
+
+  x25519_ge_p3_to_cached(&Ai[0], A);
+  ge_p3_dbl(&t, A);
+  x25519_ge_p1p1_to_p3(&A2, &t);
+  x25519_ge_add(&t, &A2, &Ai[0]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[1], &u);
+  x25519_ge_add(&t, &A2, &Ai[1]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[2], &u);
+  x25519_ge_add(&t, &A2, &Ai[2]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[3], &u);
+  x25519_ge_add(&t, &A2, &Ai[3]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[4], &u);
+  x25519_ge_add(&t, &A2, &Ai[4]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[5], &u);
+  x25519_ge_add(&t, &A2, &Ai[5]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[6], &u);
+  x25519_ge_add(&t, &A2, &Ai[6]);
+  x25519_ge_p1p1_to_p3(&u, &t);
+  x25519_ge_p3_to_cached(&Ai[7], &u);
+
+  ge_p2_0(r);
+
+  for (i = 255; i >= 0; --i) {
+    if (aslide[i] || bslide[i]) {
+      break;
+    }
+  }
+
+  for (; i >= 0; --i) {
+    ge_p2_dbl(&t, r);
+
+    if (aslide[i] > 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      x25519_ge_add(&t, &u, &Ai[aslide[i] / 2]);
+    } else if (aslide[i] < 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      x25519_ge_sub(&t, &u, &Ai[(-aslide[i]) / 2]);
+    }
+
+    if (bslide[i] > 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      ge_madd(&t, &u, &Bi[bslide[i] / 2]);
+    } else if (bslide[i] < 0) {
+      x25519_ge_p1p1_to_p3(&u, &t);
+      ge_msub(&t, &u, &Bi[(-bslide[i]) / 2]);
+    }
+
+    x25519_ge_p1p1_to_p2(r, &t);
+  }
+}
+
+// int64_lshift21 returns |a << 21| but is defined when shifting bits into the
+// sign bit. This works around a language flaw in C.
+static inline int64_t int64_lshift21(int64_t a) {
+  return (int64_t)((uint64_t)a << 21);
+}
+
+// The set of scalars is \Z/l
+// where l = 2^252 + 27742317777372353535851937790883648493.
+
+// Input:
+//   s[0]+256*s[1]+...+256^63*s[63] = s
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = s mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+//   Overwrites s in place.
+void x25519_sc_reduce(uint8_t s[64]) {
+  int64_t s0 = 2097151 & load_3(s);
+  int64_t s1 = 2097151 & (load_4(s + 2) >> 5);
+  int64_t s2 = 2097151 & (load_3(s + 5) >> 2);
+  int64_t s3 = 2097151 & (load_4(s + 7) >> 7);
+  int64_t s4 = 2097151 & (load_4(s + 10) >> 4);
+  int64_t s5 = 2097151 & (load_3(s + 13) >> 1);
+  int64_t s6 = 2097151 & (load_4(s + 15) >> 6);
+  int64_t s7 = 2097151 & (load_3(s + 18) >> 3);
+  int64_t s8 = 2097151 & load_3(s + 21);
+  int64_t s9 = 2097151 & (load_4(s + 23) >> 5);
+  int64_t s10 = 2097151 & (load_3(s + 26) >> 2);
+  int64_t s11 = 2097151 & (load_4(s + 28) >> 7);
+  int64_t s12 = 2097151 & (load_4(s + 31) >> 4);
+  int64_t s13 = 2097151 & (load_3(s + 34) >> 1);
+  int64_t s14 = 2097151 & (load_4(s + 36) >> 6);
+  int64_t s15 = 2097151 & (load_3(s + 39) >> 3);
+  int64_t s16 = 2097151 & load_3(s + 42);
+  int64_t s17 = 2097151 & (load_4(s + 44) >> 5);
+  int64_t s18 = 2097151 & (load_3(s + 47) >> 2);
+  int64_t s19 = 2097151 & (load_4(s + 49) >> 7);
+  int64_t s20 = 2097151 & (load_4(s + 52) >> 4);
+  int64_t s21 = 2097151 & (load_3(s + 55) >> 1);
+  int64_t s22 = 2097151 & (load_4(s + 57) >> 6);
+  int64_t s23 = (load_4(s + 60) >> 3);
+  int64_t carry0;
+  int64_t carry1;
+  int64_t carry2;
+  int64_t carry3;
+  int64_t carry4;
+  int64_t carry5;
+  int64_t carry6;
+  int64_t carry7;
+  int64_t carry8;
+  int64_t carry9;
+  int64_t carry10;
+  int64_t carry11;
+  int64_t carry12;
+  int64_t carry13;
+  int64_t carry14;
+  int64_t carry15;
+  int64_t carry16;
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry11 = s11 >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
+
+// Input:
+//   a[0]+256*a[1]+...+256^31*a[31] = a
+//   b[0]+256*b[1]+...+256^31*b[31] = b
+//   c[0]+256*c[1]+...+256^31*c[31] = c
+//
+// Output:
+//   s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+//   where l = 2^252 + 27742317777372353535851937790883648493.
+static void sc_muladd(uint8_t *s, const uint8_t *a, const uint8_t *b,
+                      const uint8_t *c) {
+  int64_t a0 = 2097151 & load_3(a);
+  int64_t a1 = 2097151 & (load_4(a + 2) >> 5);
+  int64_t a2 = 2097151 & (load_3(a + 5) >> 2);
+  int64_t a3 = 2097151 & (load_4(a + 7) >> 7);
+  int64_t a4 = 2097151 & (load_4(a + 10) >> 4);
+  int64_t a5 = 2097151 & (load_3(a + 13) >> 1);
+  int64_t a6 = 2097151 & (load_4(a + 15) >> 6);
+  int64_t a7 = 2097151 & (load_3(a + 18) >> 3);
+  int64_t a8 = 2097151 & load_3(a + 21);
+  int64_t a9 = 2097151 & (load_4(a + 23) >> 5);
+  int64_t a10 = 2097151 & (load_3(a + 26) >> 2);
+  int64_t a11 = (load_4(a + 28) >> 7);
+  int64_t b0 = 2097151 & load_3(b);
+  int64_t b1 = 2097151 & (load_4(b + 2) >> 5);
+  int64_t b2 = 2097151 & (load_3(b + 5) >> 2);
+  int64_t b3 = 2097151 & (load_4(b + 7) >> 7);
+  int64_t b4 = 2097151 & (load_4(b + 10) >> 4);
+  int64_t b5 = 2097151 & (load_3(b + 13) >> 1);
+  int64_t b6 = 2097151 & (load_4(b + 15) >> 6);
+  int64_t b7 = 2097151 & (load_3(b + 18) >> 3);
+  int64_t b8 = 2097151 & load_3(b + 21);
+  int64_t b9 = 2097151 & (load_4(b + 23) >> 5);
+  int64_t b10 = 2097151 & (load_3(b + 26) >> 2);
+  int64_t b11 = (load_4(b + 28) >> 7);
+  int64_t c0 = 2097151 & load_3(c);
+  int64_t c1 = 2097151 & (load_4(c + 2) >> 5);
+  int64_t c2 = 2097151 & (load_3(c + 5) >> 2);
+  int64_t c3 = 2097151 & (load_4(c + 7) >> 7);
+  int64_t c4 = 2097151 & (load_4(c + 10) >> 4);
+  int64_t c5 = 2097151 & (load_3(c + 13) >> 1);
+  int64_t c6 = 2097151 & (load_4(c + 15) >> 6);
+  int64_t c7 = 2097151 & (load_3(c + 18) >> 3);
+  int64_t c8 = 2097151 & load_3(c + 21);
+  int64_t c9 = 2097151 & (load_4(c + 23) >> 5);
+  int64_t c10 = 2097151 & (load_3(c + 26) >> 2);
+  int64_t c11 = (load_4(c + 28) >> 7);
+  int64_t s0;
+  int64_t s1;
+  int64_t s2;
+  int64_t s3;
+  int64_t s4;
+  int64_t s5;
+  int64_t s6;
+  int64_t s7;
+  int64_t s8;
+  int64_t s9;
+  int64_t s10;
+  int64_t s11;
+  int64_t s12;
+  int64_t s13;
+  int64_t s14;
+  int64_t s15;
+  int64_t s16;
+  int64_t s17;
+  int64_t s18;
+  int64_t s19;
+  int64_t s20;
+  int64_t s21;
+  int64_t s22;
+  int64_t s23;
+  int64_t carry0;
+  int64_t carry1;
+  int64_t carry2;
+  int64_t carry3;
+  int64_t carry4;
+  int64_t carry5;
+  int64_t carry6;
+  int64_t carry7;
+  int64_t carry8;
+  int64_t carry9;
+  int64_t carry10;
+  int64_t carry11;
+  int64_t carry12;
+  int64_t carry13;
+  int64_t carry14;
+  int64_t carry15;
+  int64_t carry16;
+  int64_t carry17;
+  int64_t carry18;
+  int64_t carry19;
+  int64_t carry20;
+  int64_t carry21;
+  int64_t carry22;
+
+  s0 = c0 + a0 * b0;
+  s1 = c1 + a0 * b1 + a1 * b0;
+  s2 = c2 + a0 * b2 + a1 * b1 + a2 * b0;
+  s3 = c3 + a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
+  s4 = c4 + a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0;
+  s5 = c5 + a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0;
+  s6 = c6 + a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0;
+  s7 = c7 + a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 +
+       a6 * b1 + a7 * b0;
+  s8 = c8 + a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 +
+       a6 * b2 + a7 * b1 + a8 * b0;
+  s9 = c9 + a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 +
+       a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0;
+  s10 = c10 + a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 +
+        a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0;
+  s11 = c11 + a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 +
+        a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0;
+  s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 + a7 * b5 +
+        a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1;
+  s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 + a8 * b5 +
+        a9 * b4 + a10 * b3 + a11 * b2;
+  s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 + a9 * b5 +
+        a10 * b4 + a11 * b3;
+  s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 + a10 * b5 +
+        a11 * b4;
+  s16 = a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5;
+  s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6;
+  s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7;
+  s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8;
+  s20 = a9 * b11 + a10 * b10 + a11 * b9;
+  s21 = a10 * b11 + a11 * b10;
+  s22 = a11 * b11;
+  s23 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+  carry18 = (s18 + (1 << 20)) >> 21;
+  s19 += carry18;
+  s18 -= int64_lshift21(carry18);
+  carry20 = (s20 + (1 << 20)) >> 21;
+  s21 += carry20;
+  s20 -= int64_lshift21(carry20);
+  carry22 = (s22 + (1 << 20)) >> 21;
+  s23 += carry22;
+  s22 -= int64_lshift21(carry22);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+  carry17 = (s17 + (1 << 20)) >> 21;
+  s18 += carry17;
+  s17 -= int64_lshift21(carry17);
+  carry19 = (s19 + (1 << 20)) >> 21;
+  s20 += carry19;
+  s19 -= int64_lshift21(carry19);
+  carry21 = (s21 + (1 << 20)) >> 21;
+  s22 += carry21;
+  s21 -= int64_lshift21(carry21);
+
+  s11 += s23 * 666643;
+  s12 += s23 * 470296;
+  s13 += s23 * 654183;
+  s14 -= s23 * 997805;
+  s15 += s23 * 136657;
+  s16 -= s23 * 683901;
+  s23 = 0;
+
+  s10 += s22 * 666643;
+  s11 += s22 * 470296;
+  s12 += s22 * 654183;
+  s13 -= s22 * 997805;
+  s14 += s22 * 136657;
+  s15 -= s22 * 683901;
+  s22 = 0;
+
+  s9 += s21 * 666643;
+  s10 += s21 * 470296;
+  s11 += s21 * 654183;
+  s12 -= s21 * 997805;
+  s13 += s21 * 136657;
+  s14 -= s21 * 683901;
+  s21 = 0;
+
+  s8 += s20 * 666643;
+  s9 += s20 * 470296;
+  s10 += s20 * 654183;
+  s11 -= s20 * 997805;
+  s12 += s20 * 136657;
+  s13 -= s20 * 683901;
+  s20 = 0;
+
+  s7 += s19 * 666643;
+  s8 += s19 * 470296;
+  s9 += s19 * 654183;
+  s10 -= s19 * 997805;
+  s11 += s19 * 136657;
+  s12 -= s19 * 683901;
+  s19 = 0;
+
+  s6 += s18 * 666643;
+  s7 += s18 * 470296;
+  s8 += s18 * 654183;
+  s9 -= s18 * 997805;
+  s10 += s18 * 136657;
+  s11 -= s18 * 683901;
+  s18 = 0;
+
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry12 = (s12 + (1 << 20)) >> 21;
+  s13 += carry12;
+  s12 -= int64_lshift21(carry12);
+  carry14 = (s14 + (1 << 20)) >> 21;
+  s15 += carry14;
+  s14 -= int64_lshift21(carry14);
+  carry16 = (s16 + (1 << 20)) >> 21;
+  s17 += carry16;
+  s16 -= int64_lshift21(carry16);
+
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+  carry13 = (s13 + (1 << 20)) >> 21;
+  s14 += carry13;
+  s13 -= int64_lshift21(carry13);
+  carry15 = (s15 + (1 << 20)) >> 21;
+  s16 += carry15;
+  s15 -= int64_lshift21(carry15);
+
+  s5 += s17 * 666643;
+  s6 += s17 * 470296;
+  s7 += s17 * 654183;
+  s8 -= s17 * 997805;
+  s9 += s17 * 136657;
+  s10 -= s17 * 683901;
+  s17 = 0;
+
+  s4 += s16 * 666643;
+  s5 += s16 * 470296;
+  s6 += s16 * 654183;
+  s7 -= s16 * 997805;
+  s8 += s16 * 136657;
+  s9 -= s16 * 683901;
+  s16 = 0;
+
+  s3 += s15 * 666643;
+  s4 += s15 * 470296;
+  s5 += s15 * 654183;
+  s6 -= s15 * 997805;
+  s7 += s15 * 136657;
+  s8 -= s15 * 683901;
+  s15 = 0;
+
+  s2 += s14 * 666643;
+  s3 += s14 * 470296;
+  s4 += s14 * 654183;
+  s5 -= s14 * 997805;
+  s6 += s14 * 136657;
+  s7 -= s14 * 683901;
+  s14 = 0;
+
+  s1 += s13 * 666643;
+  s2 += s13 * 470296;
+  s3 += s13 * 654183;
+  s4 -= s13 * 997805;
+  s5 += s13 * 136657;
+  s6 -= s13 * 683901;
+  s13 = 0;
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = (s0 + (1 << 20)) >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry2 = (s2 + (1 << 20)) >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry4 = (s4 + (1 << 20)) >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry6 = (s6 + (1 << 20)) >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry8 = (s8 + (1 << 20)) >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry10 = (s10 + (1 << 20)) >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  carry1 = (s1 + (1 << 20)) >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry3 = (s3 + (1 << 20)) >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry5 = (s5 + (1 << 20)) >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry7 = (s7 + (1 << 20)) >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry9 = (s9 + (1 << 20)) >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry11 = (s11 + (1 << 20)) >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+  carry11 = s11 >> 21;
+  s12 += carry11;
+  s11 -= int64_lshift21(carry11);
+
+  s0 += s12 * 666643;
+  s1 += s12 * 470296;
+  s2 += s12 * 654183;
+  s3 -= s12 * 997805;
+  s4 += s12 * 136657;
+  s5 -= s12 * 683901;
+  s12 = 0;
+
+  carry0 = s0 >> 21;
+  s1 += carry0;
+  s0 -= int64_lshift21(carry0);
+  carry1 = s1 >> 21;
+  s2 += carry1;
+  s1 -= int64_lshift21(carry1);
+  carry2 = s2 >> 21;
+  s3 += carry2;
+  s2 -= int64_lshift21(carry2);
+  carry3 = s3 >> 21;
+  s4 += carry3;
+  s3 -= int64_lshift21(carry3);
+  carry4 = s4 >> 21;
+  s5 += carry4;
+  s4 -= int64_lshift21(carry4);
+  carry5 = s5 >> 21;
+  s6 += carry5;
+  s5 -= int64_lshift21(carry5);
+  carry6 = s6 >> 21;
+  s7 += carry6;
+  s6 -= int64_lshift21(carry6);
+  carry7 = s7 >> 21;
+  s8 += carry7;
+  s7 -= int64_lshift21(carry7);
+  carry8 = s8 >> 21;
+  s9 += carry8;
+  s8 -= int64_lshift21(carry8);
+  carry9 = s9 >> 21;
+  s10 += carry9;
+  s9 -= int64_lshift21(carry9);
+  carry10 = s10 >> 21;
+  s11 += carry10;
+  s10 -= int64_lshift21(carry10);
+
+  s[0] = s0 >> 0;
+  s[1] = s0 >> 8;
+  s[2] = (s0 >> 16) | (s1 << 5);
+  s[3] = s1 >> 3;
+  s[4] = s1 >> 11;
+  s[5] = (s1 >> 19) | (s2 << 2);
+  s[6] = s2 >> 6;
+  s[7] = (s2 >> 14) | (s3 << 7);
+  s[8] = s3 >> 1;
+  s[9] = s3 >> 9;
+  s[10] = (s3 >> 17) | (s4 << 4);
+  s[11] = s4 >> 4;
+  s[12] = s4 >> 12;
+  s[13] = (s4 >> 20) | (s5 << 1);
+  s[14] = s5 >> 7;
+  s[15] = (s5 >> 15) | (s6 << 6);
+  s[16] = s6 >> 2;
+  s[17] = s6 >> 10;
+  s[18] = (s6 >> 18) | (s7 << 3);
+  s[19] = s7 >> 5;
+  s[20] = s7 >> 13;
+  s[21] = s8 >> 0;
+  s[22] = s8 >> 8;
+  s[23] = (s8 >> 16) | (s9 << 5);
+  s[24] = s9 >> 3;
+  s[25] = s9 >> 11;
+  s[26] = (s9 >> 19) | (s10 << 2);
+  s[27] = s10 >> 6;
+  s[28] = (s10 >> 14) | (s11 << 7);
+  s[29] = s11 >> 1;
+  s[30] = s11 >> 9;
+  s[31] = s11 >> 17;
+}
+
+void ED25519_keypair(uint8_t out_public_key[32], uint8_t out_private_key[64]) {
+  uint8_t seed[32];
+  RAND_bytes(seed, 32);
+  ED25519_keypair_from_seed(out_public_key, out_private_key, seed);
+}
+
+int ED25519_sign(uint8_t out_sig[64], const uint8_t *message,
+                 size_t message_len, const uint8_t private_key[64]) {
+  // NOTE: The documentation on this function says that it returns zero on
+  // allocation failure. While that can't happen with the current
+  // implementation, we want to reserve the ability to allocate in this
+  // implementation in the future.
+
+  uint8_t az[SHA512_DIGEST_LENGTH];
+  SHA512(private_key, 32, az);
+
+  az[0] &= 248;
+  az[31] &= 63;
+  az[31] |= 64;
+
+  SHA512_CTX hash_ctx;
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, az + 32, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t nonce[SHA512_DIGEST_LENGTH];
+  SHA512_Final(nonce, &hash_ctx);
+
+  x25519_sc_reduce(nonce);
+  ge_p3 R;
+  x25519_ge_scalarmult_base(&R, nonce);
+  ge_p3_tobytes(out_sig, &R);
+
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, out_sig, 32);
+  SHA512_Update(&hash_ctx, private_key + 32, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t hram[SHA512_DIGEST_LENGTH];
+  SHA512_Final(hram, &hash_ctx);
+
+  x25519_sc_reduce(hram);
+  sc_muladd(out_sig + 32, hram, az, nonce);
+
+  return 1;
+}
+
+int ED25519_verify(const uint8_t *message, size_t message_len,
+                   const uint8_t signature[64], const uint8_t public_key[32]) {
+  ge_p3 A;
+  if ((signature[63] & 224) != 0 ||
+      !x25519_ge_frombytes_vartime(&A, public_key)) {
+    return 0;
+  }
+
+  fe_loose t;
+  fe_neg(&t, &A.X);
+  fe_carry(&A.X, &t);
+  fe_neg(&t, &A.T);
+  fe_carry(&A.T, &t);
+
+  uint8_t pkcopy[32];
+  OPENSSL_memcpy(pkcopy, public_key, 32);
+  uint8_t rcopy[32];
+  OPENSSL_memcpy(rcopy, signature, 32);
+  union {
+    uint64_t u64[4];
+    uint8_t u8[32];
+  } scopy;
+  OPENSSL_memcpy(&scopy.u8[0], signature + 32, 32);
+
+  // https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in
+  // the range [0, order) in order to prevent signature malleability.
+
+  // kOrder is the order of Curve25519 in little-endian form.
+  static const uint64_t kOrder[4] = {
+    UINT64_C(0x5812631a5cf5d3ed),
+    UINT64_C(0x14def9dea2f79cd6),
+    0,
+    UINT64_C(0x1000000000000000),
+  };
+  for (size_t i = 3;; i--) {
+    if (scopy.u64[i] > kOrder[i]) {
+      return 0;
+    } else if (scopy.u64[i] < kOrder[i]) {
+      break;
+    } else if (i == 0) {
+      return 0;
+    }
+  }
+
+  SHA512_CTX hash_ctx;
+  SHA512_Init(&hash_ctx);
+  SHA512_Update(&hash_ctx, signature, 32);
+  SHA512_Update(&hash_ctx, public_key, 32);
+  SHA512_Update(&hash_ctx, message, message_len);
+  uint8_t h[SHA512_DIGEST_LENGTH];
+  SHA512_Final(h, &hash_ctx);
+
+  x25519_sc_reduce(h);
+
+  ge_p2 R;
+  ge_double_scalarmult_vartime(&R, h, &A, scopy.u8);
+
+  uint8_t rcheck[32];
+  x25519_ge_tobytes(rcheck, &R);
+
+  return CRYPTO_memcmp(rcheck, rcopy, sizeof(rcheck)) == 0;
+}
+
+void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+                               uint8_t out_private_key[64],
+                               const uint8_t seed[32]) {
+  uint8_t az[SHA512_DIGEST_LENGTH];
+  SHA512(seed, 32, az);
+
+  az[0] &= 248;
+  az[31] &= 127;
+  az[31] |= 64;
+
+  ge_p3 A;
+  x25519_ge_scalarmult_base(&A, az);
+  ge_p3_tobytes(out_public_key, &A);
+
+  OPENSSL_memcpy(out_private_key, seed, 32);
+  OPENSSL_memcpy(out_private_key + 32, out_public_key, 32);
+}
+
+
+static void x25519_scalar_mult_generic(uint8_t out[32],
+                                       const uint8_t scalar[32],
+                                       const uint8_t point[32]) {
+  fe x1, x2, z2, x3, z3, tmp0, tmp1;
+  fe_loose x2l, z2l, x3l, tmp0l, tmp1l;
+
+  uint8_t e[32];
+  OPENSSL_memcpy(e, scalar, 32);
+  e[0] &= 248;
+  e[31] &= 127;
+  e[31] |= 64;
+
+  // The following implementation was transcribed to Coq and proven to
+  // correspond to unary scalar multiplication in affine coordinates given that
+  // x1 != 0 is the x coordinate of some point on the curve. It was also checked
+  // in Coq that doing a ladderstep with x1 = x3 = 0 gives z2' = z3' = 0, and z2
+  // = z3 = 0 gives z2' = z3' = 0. The statement was quantified over the
+  // underlying field, so it applies to Curve25519 itself and the quadratic
+  // twist of Curve25519. It was not proven in Coq that prime-field arithmetic
+  // correctly simulates extension-field arithmetic on prime-field values.
+  // The decoding of the byte array representation of e was not considered.
+  // Specification of Montgomery curves in affine coordinates:
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Spec/MontgomeryCurve.v#L27>
+  // Proof that these form a group that is isomorphic to a Weierstrass curve:
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/AffineProofs.v#L35>
+  // Coq transcription and correctness proof of the loop (where scalarbits=255):
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZ.v#L118>
+  // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L278>
+  // preconditions: 0 <= e < 2^255 (not necessarily e < order), fe_invert(0) = 0
+  fe_frombytes(&x1, point);
+  fe_1(&x2);
+  fe_0(&z2);
+  fe_copy(&x3, &x1);
+  fe_1(&z3);
+
+  unsigned swap = 0;
+  int pos;
+  for (pos = 254; pos >= 0; --pos) {
+    // loop invariant as of right before the test, for the case where x1 != 0:
+    //   pos >= -1; if z2 = 0 then x2 is nonzero; if z3 = 0 then x3 is nonzero
+    //   let r := e >> (pos+1) in the following equalities of projective points:
+    //   to_xz (r*P)     === if swap then (x3, z3) else (x2, z2)
+    //   to_xz ((r+1)*P) === if swap then (x2, z2) else (x3, z3)
+    //   x1 is the nonzero x coordinate of the nonzero point (r*P-(r+1)*P)
+    unsigned b = 1 & (e[pos / 8] >> (pos & 7));
+    swap ^= b;
+    fe_cswap(&x2, &x3, swap);
+    fe_cswap(&z2, &z3, swap);
+    swap = b;
+    // Coq transcription of ladderstep formula (called from transcribed loop):
+    // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZ.v#L89>
+    // <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L131>
+    // x1 != 0 <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L217>
+    // x1  = 0 <https://github.com/mit-plv/fiat-crypto/blob/2456d821825521f7e03e65882cc3521795b0320f/src/Curves/Montgomery/XZProofs.v#L147>
+    fe_sub(&tmp0l, &x3, &z3);
+    fe_sub(&tmp1l, &x2, &z2);
+    fe_add(&x2l, &x2, &z2);
+    fe_add(&z2l, &x3, &z3);
+    fe_mul_tll(&z3, &tmp0l, &x2l);
+    fe_mul_tll(&z2, &z2l, &tmp1l);
+    fe_sq_tl(&tmp0, &tmp1l);
+    fe_sq_tl(&tmp1, &x2l);
+    fe_add(&x3l, &z3, &z2);
+    fe_sub(&z2l, &z3, &z2);
+    fe_mul_ttt(&x2, &tmp1, &tmp0);
+    fe_sub(&tmp1l, &tmp1, &tmp0);
+    fe_sq_tl(&z2, &z2l);
+    fe_mul121666(&z3, &tmp1l);
+    fe_sq_tl(&x3, &x3l);
+    fe_add(&tmp0l, &tmp0, &z3);
+    fe_mul_ttt(&z3, &x1, &z2);
+    fe_mul_tll(&z2, &tmp1l, &tmp0l);
+  }
+  // here pos=-1, so r=e, so to_xz (e*P) === if swap then (x3, z3) else (x2, z2)
+  fe_cswap(&x2, &x3, swap);
+  fe_cswap(&z2, &z3, swap);
+
+  fe_invert(&z2, &z2);
+  fe_mul_ttt(&x2, &x2, &z2);
+  fe_tobytes(out, &x2);
+}
+
+static void x25519_scalar_mult(uint8_t out[32], const uint8_t scalar[32],
+                               const uint8_t point[32]) {
+#if defined(BORINGSSL_X25519_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    x25519_NEON(out, scalar, point);
+    return;
+  }
+#endif
+
+  x25519_scalar_mult_generic(out, scalar, point);
+}
+
+void X25519_keypair(uint8_t out_public_value[32], uint8_t out_private_key[32]) {
+  RAND_bytes(out_private_key, 32);
+
+  // All X25519 implementations should decode scalars correctly (see
+  // https://tools.ietf.org/html/rfc7748#section-5). However, if an
+  // implementation doesn't then it might interoperate with random keys a
+  // fraction of the time because they'll, randomly, happen to be correctly
+  // formed.
+  //
+  // Thus we do the opposite of the masking here to make sure that our private
+  // keys are never correctly masked and so, hopefully, any incorrect
+  // implementations are deterministically broken.
+  //
+  // This does not affect security because, although we're throwing away
+  // entropy, a valid implementation of scalarmult should throw away the exact
+  // same bits anyway.
+  out_private_key[0] |= ~248;
+  out_private_key[31] &= ~64;
+  out_private_key[31] |= ~127;
+
+  X25519_public_from_private(out_public_value, out_private_key);
+}
+
+int X25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
+           const uint8_t peer_public_value[32]) {
+  static const uint8_t kZeros[32] = {0};
+  x25519_scalar_mult(out_shared_key, private_key, peer_public_value);
+  // The all-zero output results when the input is a point of small order.
+  return CRYPTO_memcmp(kZeros, out_shared_key, 32) != 0;
+}
+
+void X25519_public_from_private(uint8_t out_public_value[32],
+                                const uint8_t private_key[32]) {
+#if defined(BORINGSSL_X25519_NEON)
+  if (CRYPTO_is_NEON_capable()) {
+    static const uint8_t kMongomeryBasePoint[32] = {9};
+    x25519_NEON(out_public_value, private_key, kMongomeryBasePoint);
+    return;
+  }
+#endif
+
+  uint8_t e[32];
+  OPENSSL_memcpy(e, private_key, 32);
+  e[0] &= 248;
+  e[31] &= 127;
+  e[31] |= 64;
+
+  ge_p3 A;
+  x25519_ge_scalarmult_base(&A, e);
+
+  // We only need the u-coordinate of the curve25519 point. The map is
+  // u=(y+1)/(1-y). Since y=Y/Z, this gives u=(Z+Y)/(Z-Y).
+  fe_loose zplusy, zminusy;
+  fe zminusy_inv;
+  fe_add(&zplusy, &A.Z, &A.Y);
+  fe_sub(&zminusy, &A.Z, &A.Y);
+  fe_loose_invert(&zminusy_inv, &zminusy);
+  fe_mul_tlt(&zminusy_inv, &zplusy, &zminusy_inv);
+  fe_tobytes(out_public_value, &zminusy_inv);
+}
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h
new file mode 100644
index 0000000..5377242
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h	
@@ -0,0 +1,911 @@
+/* Autogenerated */
+/* curve description: 25519 */
+/* requested operations: carry_mul, carry_square, carry_scmul121666, carry, add, sub, opp, selectznz, to_bytes, from_bytes */
+/* n = 10 (from "10") */
+/* s = 0x8000000000000000000000000000000000000000000000000000000000000000 (from "2^255") */
+/* c = [(1, 19)] (from "1,19") */
+/* machine_wordsize = 32 (from "32") */
+
+#include <stdint.h>
+typedef unsigned char fiat_25519_uint1;
+typedef signed char fiat_25519_int1;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x3ffffff]
+ *   arg3: [0x0 ~> 0x3ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x3ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u26(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint32_t x1 = ((arg1 + arg2) + arg3);
+  uint32_t x2 = (x1 & UINT32_C(0x3ffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 26);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x3ffffff]
+ *   arg3: [0x0 ~> 0x3ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x3ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u26(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int32_t x1 = ((int32_t)(arg2 - arg1) - (int32_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 26);
+  uint32_t x3 = (x1 & UINT32_C(0x3ffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x1ffffff]
+ *   arg3: [0x0 ~> 0x1ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x1ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u25(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint32_t x1 = ((arg1 + arg2) + arg3);
+  uint32_t x2 = (x1 & UINT32_C(0x1ffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 25);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x1ffffff]
+ *   arg3: [0x0 ~> 0x1ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x1ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u25(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int32_t x1 = ((int32_t)(arg2 - arg1) - (int32_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 25);
+  uint32_t x3 = (x1 & UINT32_C(0x1ffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_25519_cmovznz_u32(uint32_t* out1, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  fiat_25519_uint1 x1 = (!(!arg1));
+  uint32_t x2 = ((fiat_25519_int1)(0x0 - x1) & UINT32_C(0xffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint32_t x3 = ((value_barrier_u32(x2) & arg3) | (value_barrier_u32(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ *   arg2: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_mul(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint64_t x1 = ((uint64_t)(arg1[9]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x2 = ((uint64_t)(arg1[9]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x3 = ((uint64_t)(arg1[9]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x4 = ((uint64_t)(arg1[9]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x5 = ((uint64_t)(arg1[9]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x6 = ((uint64_t)(arg1[9]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x7 = ((uint64_t)(arg1[9]) * ((arg2[3]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x8 = ((uint64_t)(arg1[9]) * ((arg2[2]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x9 = ((uint64_t)(arg1[9]) * ((arg2[1]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x10 = ((uint64_t)(arg1[8]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x11 = ((uint64_t)(arg1[8]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x12 = ((uint64_t)(arg1[8]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x13 = ((uint64_t)(arg1[8]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x14 = ((uint64_t)(arg1[8]) * ((arg2[5]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x15 = ((uint64_t)(arg1[8]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x16 = ((uint64_t)(arg1[8]) * ((arg2[3]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x17 = ((uint64_t)(arg1[8]) * ((arg2[2]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x18 = ((uint64_t)(arg1[7]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x19 = ((uint64_t)(arg1[7]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x20 = ((uint64_t)(arg1[7]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x21 = ((uint64_t)(arg1[7]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x22 = ((uint64_t)(arg1[7]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x23 = ((uint64_t)(arg1[7]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x24 = ((uint64_t)(arg1[7]) * ((arg2[3]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x25 = ((uint64_t)(arg1[6]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x26 = ((uint64_t)(arg1[6]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x27 = ((uint64_t)(arg1[6]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x28 = ((uint64_t)(arg1[6]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x29 = ((uint64_t)(arg1[6]) * ((arg2[5]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x30 = ((uint64_t)(arg1[6]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x31 = ((uint64_t)(arg1[5]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x32 = ((uint64_t)(arg1[5]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x33 = ((uint64_t)(arg1[5]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x34 = ((uint64_t)(arg1[5]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x35 = ((uint64_t)(arg1[5]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x36 = ((uint64_t)(arg1[4]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x37 = ((uint64_t)(arg1[4]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x38 = ((uint64_t)(arg1[4]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x39 = ((uint64_t)(arg1[4]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x40 = ((uint64_t)(arg1[3]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x41 = ((uint64_t)(arg1[3]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x42 = ((uint64_t)(arg1[3]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x43 = ((uint64_t)(arg1[2]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x44 = ((uint64_t)(arg1[2]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x45 = ((uint64_t)(arg1[1]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x46 = ((uint64_t)(arg1[9]) * (arg2[0]));
+  uint64_t x47 = ((uint64_t)(arg1[8]) * (arg2[1]));
+  uint64_t x48 = ((uint64_t)(arg1[8]) * (arg2[0]));
+  uint64_t x49 = ((uint64_t)(arg1[7]) * (arg2[2]));
+  uint64_t x50 = ((uint64_t)(arg1[7]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x51 = ((uint64_t)(arg1[7]) * (arg2[0]));
+  uint64_t x52 = ((uint64_t)(arg1[6]) * (arg2[3]));
+  uint64_t x53 = ((uint64_t)(arg1[6]) * (arg2[2]));
+  uint64_t x54 = ((uint64_t)(arg1[6]) * (arg2[1]));
+  uint64_t x55 = ((uint64_t)(arg1[6]) * (arg2[0]));
+  uint64_t x56 = ((uint64_t)(arg1[5]) * (arg2[4]));
+  uint64_t x57 = ((uint64_t)(arg1[5]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x58 = ((uint64_t)(arg1[5]) * (arg2[2]));
+  uint64_t x59 = ((uint64_t)(arg1[5]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x60 = ((uint64_t)(arg1[5]) * (arg2[0]));
+  uint64_t x61 = ((uint64_t)(arg1[4]) * (arg2[5]));
+  uint64_t x62 = ((uint64_t)(arg1[4]) * (arg2[4]));
+  uint64_t x63 = ((uint64_t)(arg1[4]) * (arg2[3]));
+  uint64_t x64 = ((uint64_t)(arg1[4]) * (arg2[2]));
+  uint64_t x65 = ((uint64_t)(arg1[4]) * (arg2[1]));
+  uint64_t x66 = ((uint64_t)(arg1[4]) * (arg2[0]));
+  uint64_t x67 = ((uint64_t)(arg1[3]) * (arg2[6]));
+  uint64_t x68 = ((uint64_t)(arg1[3]) * ((arg2[5]) * (uint32_t)0x2));
+  uint64_t x69 = ((uint64_t)(arg1[3]) * (arg2[4]));
+  uint64_t x70 = ((uint64_t)(arg1[3]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x71 = ((uint64_t)(arg1[3]) * (arg2[2]));
+  uint64_t x72 = ((uint64_t)(arg1[3]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x73 = ((uint64_t)(arg1[3]) * (arg2[0]));
+  uint64_t x74 = ((uint64_t)(arg1[2]) * (arg2[7]));
+  uint64_t x75 = ((uint64_t)(arg1[2]) * (arg2[6]));
+  uint64_t x76 = ((uint64_t)(arg1[2]) * (arg2[5]));
+  uint64_t x77 = ((uint64_t)(arg1[2]) * (arg2[4]));
+  uint64_t x78 = ((uint64_t)(arg1[2]) * (arg2[3]));
+  uint64_t x79 = ((uint64_t)(arg1[2]) * (arg2[2]));
+  uint64_t x80 = ((uint64_t)(arg1[2]) * (arg2[1]));
+  uint64_t x81 = ((uint64_t)(arg1[2]) * (arg2[0]));
+  uint64_t x82 = ((uint64_t)(arg1[1]) * (arg2[8]));
+  uint64_t x83 = ((uint64_t)(arg1[1]) * ((arg2[7]) * (uint32_t)0x2));
+  uint64_t x84 = ((uint64_t)(arg1[1]) * (arg2[6]));
+  uint64_t x85 = ((uint64_t)(arg1[1]) * ((arg2[5]) * (uint32_t)0x2));
+  uint64_t x86 = ((uint64_t)(arg1[1]) * (arg2[4]));
+  uint64_t x87 = ((uint64_t)(arg1[1]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x88 = ((uint64_t)(arg1[1]) * (arg2[2]));
+  uint64_t x89 = ((uint64_t)(arg1[1]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x90 = ((uint64_t)(arg1[1]) * (arg2[0]));
+  uint64_t x91 = ((uint64_t)(arg1[0]) * (arg2[9]));
+  uint64_t x92 = ((uint64_t)(arg1[0]) * (arg2[8]));
+  uint64_t x93 = ((uint64_t)(arg1[0]) * (arg2[7]));
+  uint64_t x94 = ((uint64_t)(arg1[0]) * (arg2[6]));
+  uint64_t x95 = ((uint64_t)(arg1[0]) * (arg2[5]));
+  uint64_t x96 = ((uint64_t)(arg1[0]) * (arg2[4]));
+  uint64_t x97 = ((uint64_t)(arg1[0]) * (arg2[3]));
+  uint64_t x98 = ((uint64_t)(arg1[0]) * (arg2[2]));
+  uint64_t x99 = ((uint64_t)(arg1[0]) * (arg2[1]));
+  uint64_t x100 = ((uint64_t)(arg1[0]) * (arg2[0]));
+  uint64_t x101 = (x100 + (x45 + (x44 + (x42 + (x39 + (x35 + (x30 + (x24 + (x17 + x9)))))))));
+  uint64_t x102 = (x101 >> 26);
+  uint32_t x103 = (uint32_t)(x101 & UINT32_C(0x3ffffff));
+  uint64_t x104 = (x91 + (x82 + (x74 + (x67 + (x61 + (x56 + (x52 + (x49 + (x47 + x46)))))))));
+  uint64_t x105 = (x92 + (x83 + (x75 + (x68 + (x62 + (x57 + (x53 + (x50 + (x48 + x1)))))))));
+  uint64_t x106 = (x93 + (x84 + (x76 + (x69 + (x63 + (x58 + (x54 + (x51 + (x10 + x2)))))))));
+  uint64_t x107 = (x94 + (x85 + (x77 + (x70 + (x64 + (x59 + (x55 + (x18 + (x11 + x3)))))))));
+  uint64_t x108 = (x95 + (x86 + (x78 + (x71 + (x65 + (x60 + (x25 + (x19 + (x12 + x4)))))))));
+  uint64_t x109 = (x96 + (x87 + (x79 + (x72 + (x66 + (x31 + (x26 + (x20 + (x13 + x5)))))))));
+  uint64_t x110 = (x97 + (x88 + (x80 + (x73 + (x36 + (x32 + (x27 + (x21 + (x14 + x6)))))))));
+  uint64_t x111 = (x98 + (x89 + (x81 + (x40 + (x37 + (x33 + (x28 + (x22 + (x15 + x7)))))))));
+  uint64_t x112 = (x99 + (x90 + (x43 + (x41 + (x38 + (x34 + (x29 + (x23 + (x16 + x8)))))))));
+  uint64_t x113 = (x102 + x112);
+  uint64_t x114 = (x113 >> 25);
+  uint32_t x115 = (uint32_t)(x113 & UINT32_C(0x1ffffff));
+  uint64_t x116 = (x114 + x111);
+  uint64_t x117 = (x116 >> 26);
+  uint32_t x118 = (uint32_t)(x116 & UINT32_C(0x3ffffff));
+  uint64_t x119 = (x117 + x110);
+  uint64_t x120 = (x119 >> 25);
+  uint32_t x121 = (uint32_t)(x119 & UINT32_C(0x1ffffff));
+  uint64_t x122 = (x120 + x109);
+  uint64_t x123 = (x122 >> 26);
+  uint32_t x124 = (uint32_t)(x122 & UINT32_C(0x3ffffff));
+  uint64_t x125 = (x123 + x108);
+  uint64_t x126 = (x125 >> 25);
+  uint32_t x127 = (uint32_t)(x125 & UINT32_C(0x1ffffff));
+  uint64_t x128 = (x126 + x107);
+  uint64_t x129 = (x128 >> 26);
+  uint32_t x130 = (uint32_t)(x128 & UINT32_C(0x3ffffff));
+  uint64_t x131 = (x129 + x106);
+  uint64_t x132 = (x131 >> 25);
+  uint32_t x133 = (uint32_t)(x131 & UINT32_C(0x1ffffff));
+  uint64_t x134 = (x132 + x105);
+  uint64_t x135 = (x134 >> 26);
+  uint32_t x136 = (uint32_t)(x134 & UINT32_C(0x3ffffff));
+  uint64_t x137 = (x135 + x104);
+  uint64_t x138 = (x137 >> 25);
+  uint32_t x139 = (uint32_t)(x137 & UINT32_C(0x1ffffff));
+  uint64_t x140 = (x138 * (uint64_t)UINT8_C(0x13));
+  uint64_t x141 = (x103 + x140);
+  uint32_t x142 = (uint32_t)(x141 >> 26);
+  uint32_t x143 = (uint32_t)(x141 & UINT32_C(0x3ffffff));
+  uint32_t x144 = (x142 + x115);
+  uint32_t x145 = (x144 >> 25);
+  uint32_t x146 = (x144 & UINT32_C(0x1ffffff));
+  uint32_t x147 = (x145 + x118);
+  out1[0] = x143;
+  out1[1] = x146;
+  out1[2] = x147;
+  out1[3] = x121;
+  out1[4] = x124;
+  out1[5] = x127;
+  out1[6] = x130;
+  out1[7] = x133;
+  out1[8] = x136;
+  out1[9] = x139;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_square(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = ((arg1[9]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x2 = (x1 * (uint32_t)0x2);
+  uint32_t x3 = ((arg1[9]) * (uint32_t)0x2);
+  uint32_t x4 = ((arg1[8]) * (uint32_t)UINT8_C(0x13));
+  uint64_t x5 = (x4 * (uint64_t)0x2);
+  uint32_t x6 = ((arg1[8]) * (uint32_t)0x2);
+  uint32_t x7 = ((arg1[7]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x8 = (x7 * (uint32_t)0x2);
+  uint32_t x9 = ((arg1[7]) * (uint32_t)0x2);
+  uint32_t x10 = ((arg1[6]) * (uint32_t)UINT8_C(0x13));
+  uint64_t x11 = (x10 * (uint64_t)0x2);
+  uint32_t x12 = ((arg1[6]) * (uint32_t)0x2);
+  uint32_t x13 = ((arg1[5]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x14 = ((arg1[5]) * (uint32_t)0x2);
+  uint32_t x15 = ((arg1[4]) * (uint32_t)0x2);
+  uint32_t x16 = ((arg1[3]) * (uint32_t)0x2);
+  uint32_t x17 = ((arg1[2]) * (uint32_t)0x2);
+  uint32_t x18 = ((arg1[1]) * (uint32_t)0x2);
+  uint64_t x19 = ((uint64_t)(arg1[9]) * (x1 * (uint32_t)0x2));
+  uint64_t x20 = ((uint64_t)(arg1[8]) * x2);
+  uint64_t x21 = ((uint64_t)(arg1[8]) * x4);
+  uint64_t x22 = ((arg1[7]) * (x2 * (uint64_t)0x2));
+  uint64_t x23 = ((arg1[7]) * x5);
+  uint64_t x24 = ((uint64_t)(arg1[7]) * (x7 * (uint32_t)0x2));
+  uint64_t x25 = ((uint64_t)(arg1[6]) * x2);
+  uint64_t x26 = ((arg1[6]) * x5);
+  uint64_t x27 = ((uint64_t)(arg1[6]) * x8);
+  uint64_t x28 = ((uint64_t)(arg1[6]) * x10);
+  uint64_t x29 = ((arg1[5]) * (x2 * (uint64_t)0x2));
+  uint64_t x30 = ((arg1[5]) * x5);
+  uint64_t x31 = ((arg1[5]) * (x8 * (uint64_t)0x2));
+  uint64_t x32 = ((arg1[5]) * x11);
+  uint64_t x33 = ((uint64_t)(arg1[5]) * (x13 * (uint32_t)0x2));
+  uint64_t x34 = ((uint64_t)(arg1[4]) * x2);
+  uint64_t x35 = ((arg1[4]) * x5);
+  uint64_t x36 = ((uint64_t)(arg1[4]) * x8);
+  uint64_t x37 = ((arg1[4]) * x11);
+  uint64_t x38 = ((uint64_t)(arg1[4]) * x14);
+  uint64_t x39 = ((uint64_t)(arg1[4]) * (arg1[4]));
+  uint64_t x40 = ((arg1[3]) * (x2 * (uint64_t)0x2));
+  uint64_t x41 = ((arg1[3]) * x5);
+  uint64_t x42 = ((arg1[3]) * (x8 * (uint64_t)0x2));
+  uint64_t x43 = ((uint64_t)(arg1[3]) * x12);
+  uint64_t x44 = ((uint64_t)(arg1[3]) * (x14 * (uint32_t)0x2));
+  uint64_t x45 = ((uint64_t)(arg1[3]) * x15);
+  uint64_t x46 = ((uint64_t)(arg1[3]) * ((arg1[3]) * (uint32_t)0x2));
+  uint64_t x47 = ((uint64_t)(arg1[2]) * x2);
+  uint64_t x48 = ((arg1[2]) * x5);
+  uint64_t x49 = ((uint64_t)(arg1[2]) * x9);
+  uint64_t x50 = ((uint64_t)(arg1[2]) * x12);
+  uint64_t x51 = ((uint64_t)(arg1[2]) * x14);
+  uint64_t x52 = ((uint64_t)(arg1[2]) * x15);
+  uint64_t x53 = ((uint64_t)(arg1[2]) * x16);
+  uint64_t x54 = ((uint64_t)(arg1[2]) * (arg1[2]));
+  uint64_t x55 = ((arg1[1]) * (x2 * (uint64_t)0x2));
+  uint64_t x56 = ((uint64_t)(arg1[1]) * x6);
+  uint64_t x57 = ((uint64_t)(arg1[1]) * (x9 * (uint32_t)0x2));
+  uint64_t x58 = ((uint64_t)(arg1[1]) * x12);
+  uint64_t x59 = ((uint64_t)(arg1[1]) * (x14 * (uint32_t)0x2));
+  uint64_t x60 = ((uint64_t)(arg1[1]) * x15);
+  uint64_t x61 = ((uint64_t)(arg1[1]) * (x16 * (uint32_t)0x2));
+  uint64_t x62 = ((uint64_t)(arg1[1]) * x17);
+  uint64_t x63 = ((uint64_t)(arg1[1]) * ((arg1[1]) * (uint32_t)0x2));
+  uint64_t x64 = ((uint64_t)(arg1[0]) * x3);
+  uint64_t x65 = ((uint64_t)(arg1[0]) * x6);
+  uint64_t x66 = ((uint64_t)(arg1[0]) * x9);
+  uint64_t x67 = ((uint64_t)(arg1[0]) * x12);
+  uint64_t x68 = ((uint64_t)(arg1[0]) * x14);
+  uint64_t x69 = ((uint64_t)(arg1[0]) * x15);
+  uint64_t x70 = ((uint64_t)(arg1[0]) * x16);
+  uint64_t x71 = ((uint64_t)(arg1[0]) * x17);
+  uint64_t x72 = ((uint64_t)(arg1[0]) * x18);
+  uint64_t x73 = ((uint64_t)(arg1[0]) * (arg1[0]));
+  uint64_t x74 = (x73 + (x55 + (x48 + (x42 + (x37 + x33)))));
+  uint64_t x75 = (x74 >> 26);
+  uint32_t x76 = (uint32_t)(x74 & UINT32_C(0x3ffffff));
+  uint64_t x77 = (x64 + (x56 + (x49 + (x43 + x38))));
+  uint64_t x78 = (x65 + (x57 + (x50 + (x44 + (x39 + x19)))));
+  uint64_t x79 = (x66 + (x58 + (x51 + (x45 + x20))));
+  uint64_t x80 = (x67 + (x59 + (x52 + (x46 + (x22 + x21)))));
+  uint64_t x81 = (x68 + (x60 + (x53 + (x25 + x23))));
+  uint64_t x82 = (x69 + (x61 + (x54 + (x29 + (x26 + x24)))));
+  uint64_t x83 = (x70 + (x62 + (x34 + (x30 + x27))));
+  uint64_t x84 = (x71 + (x63 + (x40 + (x35 + (x31 + x28)))));
+  uint64_t x85 = (x72 + (x47 + (x41 + (x36 + x32))));
+  uint64_t x86 = (x75 + x85);
+  uint64_t x87 = (x86 >> 25);
+  uint32_t x88 = (uint32_t)(x86 & UINT32_C(0x1ffffff));
+  uint64_t x89 = (x87 + x84);
+  uint64_t x90 = (x89 >> 26);
+  uint32_t x91 = (uint32_t)(x89 & UINT32_C(0x3ffffff));
+  uint64_t x92 = (x90 + x83);
+  uint64_t x93 = (x92 >> 25);
+  uint32_t x94 = (uint32_t)(x92 & UINT32_C(0x1ffffff));
+  uint64_t x95 = (x93 + x82);
+  uint64_t x96 = (x95 >> 26);
+  uint32_t x97 = (uint32_t)(x95 & UINT32_C(0x3ffffff));
+  uint64_t x98 = (x96 + x81);
+  uint64_t x99 = (x98 >> 25);
+  uint32_t x100 = (uint32_t)(x98 & UINT32_C(0x1ffffff));
+  uint64_t x101 = (x99 + x80);
+  uint64_t x102 = (x101 >> 26);
+  uint32_t x103 = (uint32_t)(x101 & UINT32_C(0x3ffffff));
+  uint64_t x104 = (x102 + x79);
+  uint64_t x105 = (x104 >> 25);
+  uint32_t x106 = (uint32_t)(x104 & UINT32_C(0x1ffffff));
+  uint64_t x107 = (x105 + x78);
+  uint64_t x108 = (x107 >> 26);
+  uint32_t x109 = (uint32_t)(x107 & UINT32_C(0x3ffffff));
+  uint64_t x110 = (x108 + x77);
+  uint64_t x111 = (x110 >> 25);
+  uint32_t x112 = (uint32_t)(x110 & UINT32_C(0x1ffffff));
+  uint64_t x113 = (x111 * (uint64_t)UINT8_C(0x13));
+  uint64_t x114 = (x76 + x113);
+  uint32_t x115 = (uint32_t)(x114 >> 26);
+  uint32_t x116 = (uint32_t)(x114 & UINT32_C(0x3ffffff));
+  uint32_t x117 = (x115 + x88);
+  uint32_t x118 = (x117 >> 25);
+  uint32_t x119 = (x117 & UINT32_C(0x1ffffff));
+  uint32_t x120 = (x118 + x91);
+  out1[0] = x116;
+  out1[1] = x119;
+  out1[2] = x120;
+  out1[3] = x94;
+  out1[4] = x97;
+  out1[5] = x100;
+  out1[6] = x103;
+  out1[7] = x106;
+  out1[8] = x109;
+  out1[9] = x112;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_scmul_121666(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint64_t x1 = ((uint64_t)UINT32_C(0x1db42) * (arg1[9]));
+  uint64_t x2 = ((uint64_t)UINT32_C(0x1db42) * (arg1[8]));
+  uint64_t x3 = ((uint64_t)UINT32_C(0x1db42) * (arg1[7]));
+  uint64_t x4 = ((uint64_t)UINT32_C(0x1db42) * (arg1[6]));
+  uint64_t x5 = ((uint64_t)UINT32_C(0x1db42) * (arg1[5]));
+  uint64_t x6 = ((uint64_t)UINT32_C(0x1db42) * (arg1[4]));
+  uint64_t x7 = ((uint64_t)UINT32_C(0x1db42) * (arg1[3]));
+  uint64_t x8 = ((uint64_t)UINT32_C(0x1db42) * (arg1[2]));
+  uint64_t x9 = ((uint64_t)UINT32_C(0x1db42) * (arg1[1]));
+  uint64_t x10 = ((uint64_t)UINT32_C(0x1db42) * (arg1[0]));
+  uint32_t x11 = (uint32_t)(x10 >> 26);
+  uint32_t x12 = (uint32_t)(x10 & UINT32_C(0x3ffffff));
+  uint64_t x13 = (x11 + x9);
+  uint32_t x14 = (uint32_t)(x13 >> 25);
+  uint32_t x15 = (uint32_t)(x13 & UINT32_C(0x1ffffff));
+  uint64_t x16 = (x14 + x8);
+  uint32_t x17 = (uint32_t)(x16 >> 26);
+  uint32_t x18 = (uint32_t)(x16 & UINT32_C(0x3ffffff));
+  uint64_t x19 = (x17 + x7);
+  uint32_t x20 = (uint32_t)(x19 >> 25);
+  uint32_t x21 = (uint32_t)(x19 & UINT32_C(0x1ffffff));
+  uint64_t x22 = (x20 + x6);
+  uint32_t x23 = (uint32_t)(x22 >> 26);
+  uint32_t x24 = (uint32_t)(x22 & UINT32_C(0x3ffffff));
+  uint64_t x25 = (x23 + x5);
+  uint32_t x26 = (uint32_t)(x25 >> 25);
+  uint32_t x27 = (uint32_t)(x25 & UINT32_C(0x1ffffff));
+  uint64_t x28 = (x26 + x4);
+  uint32_t x29 = (uint32_t)(x28 >> 26);
+  uint32_t x30 = (uint32_t)(x28 & UINT32_C(0x3ffffff));
+  uint64_t x31 = (x29 + x3);
+  uint32_t x32 = (uint32_t)(x31 >> 25);
+  uint32_t x33 = (uint32_t)(x31 & UINT32_C(0x1ffffff));
+  uint64_t x34 = (x32 + x2);
+  uint32_t x35 = (uint32_t)(x34 >> 26);
+  uint32_t x36 = (uint32_t)(x34 & UINT32_C(0x3ffffff));
+  uint64_t x37 = (x35 + x1);
+  uint32_t x38 = (uint32_t)(x37 >> 25);
+  uint32_t x39 = (uint32_t)(x37 & UINT32_C(0x1ffffff));
+  uint32_t x40 = (x38 * (uint32_t)UINT8_C(0x13));
+  uint32_t x41 = (x12 + x40);
+  uint32_t x42 = (x41 >> 26);
+  uint32_t x43 = (x41 & UINT32_C(0x3ffffff));
+  uint32_t x44 = (x42 + x15);
+  uint32_t x45 = (x44 >> 25);
+  uint32_t x46 = (x44 & UINT32_C(0x1ffffff));
+  uint32_t x47 = (x45 + x18);
+  out1[0] = x43;
+  out1[1] = x46;
+  out1[2] = x47;
+  out1[3] = x21;
+  out1[4] = x24;
+  out1[5] = x27;
+  out1[6] = x30;
+  out1[7] = x33;
+  out1[8] = x36;
+  out1[9] = x39;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = (arg1[0]);
+  uint32_t x2 = ((x1 >> 26) + (arg1[1]));
+  uint32_t x3 = ((x2 >> 25) + (arg1[2]));
+  uint32_t x4 = ((x3 >> 26) + (arg1[3]));
+  uint32_t x5 = ((x4 >> 25) + (arg1[4]));
+  uint32_t x6 = ((x5 >> 26) + (arg1[5]));
+  uint32_t x7 = ((x6 >> 25) + (arg1[6]));
+  uint32_t x8 = ((x7 >> 26) + (arg1[7]));
+  uint32_t x9 = ((x8 >> 25) + (arg1[8]));
+  uint32_t x10 = ((x9 >> 26) + (arg1[9]));
+  uint32_t x11 = ((x1 & UINT32_C(0x3ffffff)) + ((x10 >> 25) * (uint32_t)UINT8_C(0x13)));
+  uint32_t x12 = ((x11 >> 26) + (x2 & UINT32_C(0x1ffffff)));
+  uint32_t x13 = (x11 & UINT32_C(0x3ffffff));
+  uint32_t x14 = (x12 & UINT32_C(0x1ffffff));
+  uint32_t x15 = ((x12 >> 25) + (x3 & UINT32_C(0x3ffffff)));
+  uint32_t x16 = (x4 & UINT32_C(0x1ffffff));
+  uint32_t x17 = (x5 & UINT32_C(0x3ffffff));
+  uint32_t x18 = (x6 & UINT32_C(0x1ffffff));
+  uint32_t x19 = (x7 & UINT32_C(0x3ffffff));
+  uint32_t x20 = (x8 & UINT32_C(0x1ffffff));
+  uint32_t x21 = (x9 & UINT32_C(0x3ffffff));
+  uint32_t x22 = (x10 & UINT32_C(0x1ffffff));
+  out1[0] = x13;
+  out1[1] = x14;
+  out1[2] = x15;
+  out1[3] = x16;
+  out1[4] = x17;
+  out1[5] = x18;
+  out1[6] = x19;
+  out1[7] = x20;
+  out1[8] = x21;
+  out1[9] = x22;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ *   arg2: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_add(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint32_t x1 = ((arg1[0]) + (arg2[0]));
+  uint32_t x2 = ((arg1[1]) + (arg2[1]));
+  uint32_t x3 = ((arg1[2]) + (arg2[2]));
+  uint32_t x4 = ((arg1[3]) + (arg2[3]));
+  uint32_t x5 = ((arg1[4]) + (arg2[4]));
+  uint32_t x6 = ((arg1[5]) + (arg2[5]));
+  uint32_t x7 = ((arg1[6]) + (arg2[6]));
+  uint32_t x8 = ((arg1[7]) + (arg2[7]));
+  uint32_t x9 = ((arg1[8]) + (arg2[8]));
+  uint32_t x10 = ((arg1[9]) + (arg2[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ *   arg2: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_sub(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint32_t x1 = ((UINT32_C(0x7ffffda) + (arg1[0])) - (arg2[0]));
+  uint32_t x2 = ((UINT32_C(0x3fffffe) + (arg1[1])) - (arg2[1]));
+  uint32_t x3 = ((UINT32_C(0x7fffffe) + (arg1[2])) - (arg2[2]));
+  uint32_t x4 = ((UINT32_C(0x3fffffe) + (arg1[3])) - (arg2[3]));
+  uint32_t x5 = ((UINT32_C(0x7fffffe) + (arg1[4])) - (arg2[4]));
+  uint32_t x6 = ((UINT32_C(0x3fffffe) + (arg1[5])) - (arg2[5]));
+  uint32_t x7 = ((UINT32_C(0x7fffffe) + (arg1[6])) - (arg2[6]));
+  uint32_t x8 = ((UINT32_C(0x3fffffe) + (arg1[7])) - (arg2[7]));
+  uint32_t x9 = ((UINT32_C(0x7fffffe) + (arg1[8])) - (arg2[8]));
+  uint32_t x10 = ((UINT32_C(0x3fffffe) + (arg1[9])) - (arg2[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_opp(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = (UINT32_C(0x7ffffda) - (arg1[0]));
+  uint32_t x2 = (UINT32_C(0x3fffffe) - (arg1[1]));
+  uint32_t x3 = (UINT32_C(0x7fffffe) - (arg1[2]));
+  uint32_t x4 = (UINT32_C(0x3fffffe) - (arg1[3]));
+  uint32_t x5 = (UINT32_C(0x7fffffe) - (arg1[4]));
+  uint32_t x6 = (UINT32_C(0x3fffffe) - (arg1[5]));
+  uint32_t x7 = (UINT32_C(0x7fffffe) - (arg1[6]));
+  uint32_t x8 = (UINT32_C(0x3fffffe) - (arg1[7]));
+  uint32_t x9 = (UINT32_C(0x7fffffe) - (arg1[8]));
+  uint32_t x10 = (UINT32_C(0x3fffffe) - (arg1[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_25519_selectznz(uint32_t out1[10], fiat_25519_uint1 arg1, const uint32_t arg2[10], const uint32_t arg3[10]) {
+  uint32_t x1;
+  fiat_25519_cmovznz_u32(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint32_t x2;
+  fiat_25519_cmovznz_u32(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint32_t x3;
+  fiat_25519_cmovznz_u32(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint32_t x4;
+  fiat_25519_cmovznz_u32(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint32_t x5;
+  fiat_25519_cmovznz_u32(&x5, arg1, (arg2[4]), (arg3[4]));
+  uint32_t x6;
+  fiat_25519_cmovznz_u32(&x6, arg1, (arg2[5]), (arg3[5]));
+  uint32_t x7;
+  fiat_25519_cmovznz_u32(&x7, arg1, (arg2[6]), (arg3[6]));
+  uint32_t x8;
+  fiat_25519_cmovznz_u32(&x8, arg1, (arg2[7]), (arg3[7]));
+  uint32_t x9;
+  fiat_25519_cmovznz_u32(&x9, arg1, (arg2[8]), (arg3[8]));
+  uint32_t x10;
+  fiat_25519_cmovznz_u32(&x10, arg1, (arg2[9]), (arg3[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ */
+static void fiat_25519_to_bytes(uint8_t out1[32], const uint32_t arg1[10]) {
+  uint32_t x1;
+  fiat_25519_uint1 x2;
+  fiat_25519_subborrowx_u26(&x1, &x2, 0x0, (arg1[0]), UINT32_C(0x3ffffed));
+  uint32_t x3;
+  fiat_25519_uint1 x4;
+  fiat_25519_subborrowx_u25(&x3, &x4, x2, (arg1[1]), UINT32_C(0x1ffffff));
+  uint32_t x5;
+  fiat_25519_uint1 x6;
+  fiat_25519_subborrowx_u26(&x5, &x6, x4, (arg1[2]), UINT32_C(0x3ffffff));
+  uint32_t x7;
+  fiat_25519_uint1 x8;
+  fiat_25519_subborrowx_u25(&x7, &x8, x6, (arg1[3]), UINT32_C(0x1ffffff));
+  uint32_t x9;
+  fiat_25519_uint1 x10;
+  fiat_25519_subborrowx_u26(&x9, &x10, x8, (arg1[4]), UINT32_C(0x3ffffff));
+  uint32_t x11;
+  fiat_25519_uint1 x12;
+  fiat_25519_subborrowx_u25(&x11, &x12, x10, (arg1[5]), UINT32_C(0x1ffffff));
+  uint32_t x13;
+  fiat_25519_uint1 x14;
+  fiat_25519_subborrowx_u26(&x13, &x14, x12, (arg1[6]), UINT32_C(0x3ffffff));
+  uint32_t x15;
+  fiat_25519_uint1 x16;
+  fiat_25519_subborrowx_u25(&x15, &x16, x14, (arg1[7]), UINT32_C(0x1ffffff));
+  uint32_t x17;
+  fiat_25519_uint1 x18;
+  fiat_25519_subborrowx_u26(&x17, &x18, x16, (arg1[8]), UINT32_C(0x3ffffff));
+  uint32_t x19;
+  fiat_25519_uint1 x20;
+  fiat_25519_subborrowx_u25(&x19, &x20, x18, (arg1[9]), UINT32_C(0x1ffffff));
+  uint32_t x21;
+  fiat_25519_cmovznz_u32(&x21, x20, 0x0, UINT32_C(0xffffffff));
+  uint32_t x22;
+  fiat_25519_uint1 x23;
+  fiat_25519_addcarryx_u26(&x22, &x23, 0x0, (x21 & UINT32_C(0x3ffffed)), x1);
+  uint32_t x24;
+  fiat_25519_uint1 x25;
+  fiat_25519_addcarryx_u25(&x24, &x25, x23, (x21 & UINT32_C(0x1ffffff)), x3);
+  uint32_t x26;
+  fiat_25519_uint1 x27;
+  fiat_25519_addcarryx_u26(&x26, &x27, x25, (x21 & UINT32_C(0x3ffffff)), x5);
+  uint32_t x28;
+  fiat_25519_uint1 x29;
+  fiat_25519_addcarryx_u25(&x28, &x29, x27, (x21 & UINT32_C(0x1ffffff)), x7);
+  uint32_t x30;
+  fiat_25519_uint1 x31;
+  fiat_25519_addcarryx_u26(&x30, &x31, x29, (x21 & UINT32_C(0x3ffffff)), x9);
+  uint32_t x32;
+  fiat_25519_uint1 x33;
+  fiat_25519_addcarryx_u25(&x32, &x33, x31, (x21 & UINT32_C(0x1ffffff)), x11);
+  uint32_t x34;
+  fiat_25519_uint1 x35;
+  fiat_25519_addcarryx_u26(&x34, &x35, x33, (x21 & UINT32_C(0x3ffffff)), x13);
+  uint32_t x36;
+  fiat_25519_uint1 x37;
+  fiat_25519_addcarryx_u25(&x36, &x37, x35, (x21 & UINT32_C(0x1ffffff)), x15);
+  uint32_t x38;
+  fiat_25519_uint1 x39;
+  fiat_25519_addcarryx_u26(&x38, &x39, x37, (x21 & UINT32_C(0x3ffffff)), x17);
+  uint32_t x40;
+  fiat_25519_uint1 x41;
+  fiat_25519_addcarryx_u25(&x40, &x41, x39, (x21 & UINT32_C(0x1ffffff)), x19);
+  uint32_t x42 = (x40 << 6);
+  uint32_t x43 = (x38 << 4);
+  uint32_t x44 = (x36 << 3);
+  uint32_t x45 = (x34 * (uint32_t)0x2);
+  uint32_t x46 = (x30 << 6);
+  uint32_t x47 = (x28 << 5);
+  uint32_t x48 = (x26 << 3);
+  uint32_t x49 = (x24 << 2);
+  uint32_t x50 = (x22 >> 8);
+  uint8_t x51 = (uint8_t)(x22 & UINT8_C(0xff));
+  uint32_t x52 = (x50 >> 8);
+  uint8_t x53 = (uint8_t)(x50 & UINT8_C(0xff));
+  uint8_t x54 = (uint8_t)(x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint32_t x56 = (x54 + x49);
+  uint32_t x57 = (x56 >> 8);
+  uint8_t x58 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint32_t x59 = (x57 >> 8);
+  uint8_t x60 = (uint8_t)(x57 & UINT8_C(0xff));
+  uint8_t x61 = (uint8_t)(x59 >> 8);
+  uint8_t x62 = (uint8_t)(x59 & UINT8_C(0xff));
+  uint32_t x63 = (x61 + x48);
+  uint32_t x64 = (x63 >> 8);
+  uint8_t x65 = (uint8_t)(x63 & UINT8_C(0xff));
+  uint32_t x66 = (x64 >> 8);
+  uint8_t x67 = (uint8_t)(x64 & UINT8_C(0xff));
+  uint8_t x68 = (uint8_t)(x66 >> 8);
+  uint8_t x69 = (uint8_t)(x66 & UINT8_C(0xff));
+  uint32_t x70 = (x68 + x47);
+  uint32_t x71 = (x70 >> 8);
+  uint8_t x72 = (uint8_t)(x70 & UINT8_C(0xff));
+  uint32_t x73 = (x71 >> 8);
+  uint8_t x74 = (uint8_t)(x71 & UINT8_C(0xff));
+  uint8_t x75 = (uint8_t)(x73 >> 8);
+  uint8_t x76 = (uint8_t)(x73 & UINT8_C(0xff));
+  uint32_t x77 = (x75 + x46);
+  uint32_t x78 = (x77 >> 8);
+  uint8_t x79 = (uint8_t)(x77 & UINT8_C(0xff));
+  uint32_t x80 = (x78 >> 8);
+  uint8_t x81 = (uint8_t)(x78 & UINT8_C(0xff));
+  uint8_t x82 = (uint8_t)(x80 >> 8);
+  uint8_t x83 = (uint8_t)(x80 & UINT8_C(0xff));
+  uint8_t x84 = (uint8_t)(x82 & UINT8_C(0xff));
+  uint32_t x85 = (x32 >> 8);
+  uint8_t x86 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint32_t x87 = (x85 >> 8);
+  uint8_t x88 = (uint8_t)(x85 & UINT8_C(0xff));
+  fiat_25519_uint1 x89 = (fiat_25519_uint1)(x87 >> 8);
+  uint8_t x90 = (uint8_t)(x87 & UINT8_C(0xff));
+  uint32_t x91 = (x89 + x45);
+  uint32_t x92 = (x91 >> 8);
+  uint8_t x93 = (uint8_t)(x91 & UINT8_C(0xff));
+  uint32_t x94 = (x92 >> 8);
+  uint8_t x95 = (uint8_t)(x92 & UINT8_C(0xff));
+  uint8_t x96 = (uint8_t)(x94 >> 8);
+  uint8_t x97 = (uint8_t)(x94 & UINT8_C(0xff));
+  uint32_t x98 = (x96 + x44);
+  uint32_t x99 = (x98 >> 8);
+  uint8_t x100 = (uint8_t)(x98 & UINT8_C(0xff));
+  uint32_t x101 = (x99 >> 8);
+  uint8_t x102 = (uint8_t)(x99 & UINT8_C(0xff));
+  uint8_t x103 = (uint8_t)(x101 >> 8);
+  uint8_t x104 = (uint8_t)(x101 & UINT8_C(0xff));
+  uint32_t x105 = (x103 + x43);
+  uint32_t x106 = (x105 >> 8);
+  uint8_t x107 = (uint8_t)(x105 & UINT8_C(0xff));
+  uint32_t x108 = (x106 >> 8);
+  uint8_t x109 = (uint8_t)(x106 & UINT8_C(0xff));
+  uint8_t x110 = (uint8_t)(x108 >> 8);
+  uint8_t x111 = (uint8_t)(x108 & UINT8_C(0xff));
+  uint32_t x112 = (x110 + x42);
+  uint32_t x113 = (x112 >> 8);
+  uint8_t x114 = (uint8_t)(x112 & UINT8_C(0xff));
+  uint32_t x115 = (x113 >> 8);
+  uint8_t x116 = (uint8_t)(x113 & UINT8_C(0xff));
+  uint8_t x117 = (uint8_t)(x115 >> 8);
+  uint8_t x118 = (uint8_t)(x115 & UINT8_C(0xff));
+  out1[0] = x51;
+  out1[1] = x53;
+  out1[2] = x55;
+  out1[3] = x58;
+  out1[4] = x60;
+  out1[5] = x62;
+  out1[6] = x65;
+  out1[7] = x67;
+  out1[8] = x69;
+  out1[9] = x72;
+  out1[10] = x74;
+  out1[11] = x76;
+  out1[12] = x79;
+  out1[13] = x81;
+  out1[14] = x83;
+  out1[15] = x84;
+  out1[16] = x86;
+  out1[17] = x88;
+  out1[18] = x90;
+  out1[19] = x93;
+  out1[20] = x95;
+  out1[21] = x97;
+  out1[22] = x100;
+  out1[23] = x102;
+  out1[24] = x104;
+  out1[25] = x107;
+  out1[26] = x109;
+  out1[27] = x111;
+  out1[28] = x114;
+  out1[29] = x116;
+  out1[30] = x118;
+  out1[31] = x117;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_from_bytes(uint32_t out1[10], const uint8_t arg1[32]) {
+  uint32_t x1 = ((uint32_t)(arg1[31]) << 18);
+  uint32_t x2 = ((uint32_t)(arg1[30]) << 10);
+  uint32_t x3 = ((uint32_t)(arg1[29]) << 2);
+  uint32_t x4 = ((uint32_t)(arg1[28]) << 20);
+  uint32_t x5 = ((uint32_t)(arg1[27]) << 12);
+  uint32_t x6 = ((uint32_t)(arg1[26]) << 4);
+  uint32_t x7 = ((uint32_t)(arg1[25]) << 21);
+  uint32_t x8 = ((uint32_t)(arg1[24]) << 13);
+  uint32_t x9 = ((uint32_t)(arg1[23]) << 5);
+  uint32_t x10 = ((uint32_t)(arg1[22]) << 23);
+  uint32_t x11 = ((uint32_t)(arg1[21]) << 15);
+  uint32_t x12 = ((uint32_t)(arg1[20]) << 7);
+  uint32_t x13 = ((uint32_t)(arg1[19]) << 24);
+  uint32_t x14 = ((uint32_t)(arg1[18]) << 16);
+  uint32_t x15 = ((uint32_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint32_t x17 = ((uint32_t)(arg1[15]) << 18);
+  uint32_t x18 = ((uint32_t)(arg1[14]) << 10);
+  uint32_t x19 = ((uint32_t)(arg1[13]) << 2);
+  uint32_t x20 = ((uint32_t)(arg1[12]) << 19);
+  uint32_t x21 = ((uint32_t)(arg1[11]) << 11);
+  uint32_t x22 = ((uint32_t)(arg1[10]) << 3);
+  uint32_t x23 = ((uint32_t)(arg1[9]) << 21);
+  uint32_t x24 = ((uint32_t)(arg1[8]) << 13);
+  uint32_t x25 = ((uint32_t)(arg1[7]) << 5);
+  uint32_t x26 = ((uint32_t)(arg1[6]) << 22);
+  uint32_t x27 = ((uint32_t)(arg1[5]) << 14);
+  uint32_t x28 = ((uint32_t)(arg1[4]) << 6);
+  uint32_t x29 = ((uint32_t)(arg1[3]) << 24);
+  uint32_t x30 = ((uint32_t)(arg1[2]) << 16);
+  uint32_t x31 = ((uint32_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint32_t x33 = (x32 + (x31 + (x30 + x29)));
+  uint8_t x34 = (uint8_t)(x33 >> 26);
+  uint32_t x35 = (x33 & UINT32_C(0x3ffffff));
+  uint32_t x36 = (x3 + (x2 + x1));
+  uint32_t x37 = (x6 + (x5 + x4));
+  uint32_t x38 = (x9 + (x8 + x7));
+  uint32_t x39 = (x12 + (x11 + x10));
+  uint32_t x40 = (x16 + (x15 + (x14 + x13)));
+  uint32_t x41 = (x19 + (x18 + x17));
+  uint32_t x42 = (x22 + (x21 + x20));
+  uint32_t x43 = (x25 + (x24 + x23));
+  uint32_t x44 = (x28 + (x27 + x26));
+  uint32_t x45 = (x34 + x44);
+  uint8_t x46 = (uint8_t)(x45 >> 25);
+  uint32_t x47 = (x45 & UINT32_C(0x1ffffff));
+  uint32_t x48 = (x46 + x43);
+  uint8_t x49 = (uint8_t)(x48 >> 26);
+  uint32_t x50 = (x48 & UINT32_C(0x3ffffff));
+  uint32_t x51 = (x49 + x42);
+  uint8_t x52 = (uint8_t)(x51 >> 25);
+  uint32_t x53 = (x51 & UINT32_C(0x1ffffff));
+  uint32_t x54 = (x52 + x41);
+  uint32_t x55 = (x54 & UINT32_C(0x3ffffff));
+  uint8_t x56 = (uint8_t)(x40 >> 25);
+  uint32_t x57 = (x40 & UINT32_C(0x1ffffff));
+  uint32_t x58 = (x56 + x39);
+  uint8_t x59 = (uint8_t)(x58 >> 26);
+  uint32_t x60 = (x58 & UINT32_C(0x3ffffff));
+  uint32_t x61 = (x59 + x38);
+  uint8_t x62 = (uint8_t)(x61 >> 25);
+  uint32_t x63 = (x61 & UINT32_C(0x1ffffff));
+  uint32_t x64 = (x62 + x37);
+  uint8_t x65 = (uint8_t)(x64 >> 26);
+  uint32_t x66 = (x64 & UINT32_C(0x3ffffff));
+  uint32_t x67 = (x65 + x36);
+  out1[0] = x35;
+  out1[1] = x47;
+  out1[2] = x50;
+  out1[3] = x53;
+  out1[4] = x55;
+  out1[5] = x57;
+  out1[6] = x60;
+  out1[7] = x63;
+  out1[8] = x66;
+  out1[9] = x67;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h.grpc_back
new file mode 100644
index 0000000..5377242
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_32.h.grpc_back	
@@ -0,0 +1,911 @@
+/* Autogenerated */
+/* curve description: 25519 */
+/* requested operations: carry_mul, carry_square, carry_scmul121666, carry, add, sub, opp, selectznz, to_bytes, from_bytes */
+/* n = 10 (from "10") */
+/* s = 0x8000000000000000000000000000000000000000000000000000000000000000 (from "2^255") */
+/* c = [(1, 19)] (from "1,19") */
+/* machine_wordsize = 32 (from "32") */
+
+#include <stdint.h>
+typedef unsigned char fiat_25519_uint1;
+typedef signed char fiat_25519_int1;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x3ffffff]
+ *   arg3: [0x0 ~> 0x3ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x3ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u26(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint32_t x1 = ((arg1 + arg2) + arg3);
+  uint32_t x2 = (x1 & UINT32_C(0x3ffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 26);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x3ffffff]
+ *   arg3: [0x0 ~> 0x3ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x3ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u26(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int32_t x1 = ((int32_t)(arg2 - arg1) - (int32_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 26);
+  uint32_t x3 = (x1 & UINT32_C(0x3ffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x1ffffff]
+ *   arg3: [0x0 ~> 0x1ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x1ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u25(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint32_t x1 = ((arg1 + arg2) + arg3);
+  uint32_t x2 = (x1 & UINT32_C(0x1ffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 25);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x1ffffff]
+ *   arg3: [0x0 ~> 0x1ffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x1ffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u25(uint32_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int32_t x1 = ((int32_t)(arg2 - arg1) - (int32_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 25);
+  uint32_t x3 = (x1 & UINT32_C(0x1ffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_25519_cmovznz_u32(uint32_t* out1, fiat_25519_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  fiat_25519_uint1 x1 = (!(!arg1));
+  uint32_t x2 = ((fiat_25519_int1)(0x0 - x1) & UINT32_C(0xffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint32_t x3 = ((value_barrier_u32(x2) & arg3) | (value_barrier_u32(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ *   arg2: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_mul(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint64_t x1 = ((uint64_t)(arg1[9]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x2 = ((uint64_t)(arg1[9]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x3 = ((uint64_t)(arg1[9]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x4 = ((uint64_t)(arg1[9]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x5 = ((uint64_t)(arg1[9]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x6 = ((uint64_t)(arg1[9]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x7 = ((uint64_t)(arg1[9]) * ((arg2[3]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x8 = ((uint64_t)(arg1[9]) * ((arg2[2]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x9 = ((uint64_t)(arg1[9]) * ((arg2[1]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x10 = ((uint64_t)(arg1[8]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x11 = ((uint64_t)(arg1[8]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x12 = ((uint64_t)(arg1[8]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x13 = ((uint64_t)(arg1[8]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x14 = ((uint64_t)(arg1[8]) * ((arg2[5]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x15 = ((uint64_t)(arg1[8]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x16 = ((uint64_t)(arg1[8]) * ((arg2[3]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x17 = ((uint64_t)(arg1[8]) * ((arg2[2]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x18 = ((uint64_t)(arg1[7]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x19 = ((uint64_t)(arg1[7]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x20 = ((uint64_t)(arg1[7]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x21 = ((uint64_t)(arg1[7]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x22 = ((uint64_t)(arg1[7]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x23 = ((uint64_t)(arg1[7]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x24 = ((uint64_t)(arg1[7]) * ((arg2[3]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x25 = ((uint64_t)(arg1[6]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x26 = ((uint64_t)(arg1[6]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x27 = ((uint64_t)(arg1[6]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x28 = ((uint64_t)(arg1[6]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x29 = ((uint64_t)(arg1[6]) * ((arg2[5]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x30 = ((uint64_t)(arg1[6]) * ((arg2[4]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x31 = ((uint64_t)(arg1[5]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x32 = ((uint64_t)(arg1[5]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x33 = ((uint64_t)(arg1[5]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x34 = ((uint64_t)(arg1[5]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x35 = ((uint64_t)(arg1[5]) * ((arg2[5]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x36 = ((uint64_t)(arg1[4]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x37 = ((uint64_t)(arg1[4]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x38 = ((uint64_t)(arg1[4]) * ((arg2[7]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x39 = ((uint64_t)(arg1[4]) * ((arg2[6]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x40 = ((uint64_t)(arg1[3]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x41 = ((uint64_t)(arg1[3]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x42 = ((uint64_t)(arg1[3]) * ((arg2[7]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x43 = ((uint64_t)(arg1[2]) * ((arg2[9]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x44 = ((uint64_t)(arg1[2]) * ((arg2[8]) * (uint32_t)UINT8_C(0x13)));
+  uint64_t x45 = ((uint64_t)(arg1[1]) * ((arg2[9]) * ((uint32_t)0x2 * UINT8_C(0x13))));
+  uint64_t x46 = ((uint64_t)(arg1[9]) * (arg2[0]));
+  uint64_t x47 = ((uint64_t)(arg1[8]) * (arg2[1]));
+  uint64_t x48 = ((uint64_t)(arg1[8]) * (arg2[0]));
+  uint64_t x49 = ((uint64_t)(arg1[7]) * (arg2[2]));
+  uint64_t x50 = ((uint64_t)(arg1[7]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x51 = ((uint64_t)(arg1[7]) * (arg2[0]));
+  uint64_t x52 = ((uint64_t)(arg1[6]) * (arg2[3]));
+  uint64_t x53 = ((uint64_t)(arg1[6]) * (arg2[2]));
+  uint64_t x54 = ((uint64_t)(arg1[6]) * (arg2[1]));
+  uint64_t x55 = ((uint64_t)(arg1[6]) * (arg2[0]));
+  uint64_t x56 = ((uint64_t)(arg1[5]) * (arg2[4]));
+  uint64_t x57 = ((uint64_t)(arg1[5]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x58 = ((uint64_t)(arg1[5]) * (arg2[2]));
+  uint64_t x59 = ((uint64_t)(arg1[5]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x60 = ((uint64_t)(arg1[5]) * (arg2[0]));
+  uint64_t x61 = ((uint64_t)(arg1[4]) * (arg2[5]));
+  uint64_t x62 = ((uint64_t)(arg1[4]) * (arg2[4]));
+  uint64_t x63 = ((uint64_t)(arg1[4]) * (arg2[3]));
+  uint64_t x64 = ((uint64_t)(arg1[4]) * (arg2[2]));
+  uint64_t x65 = ((uint64_t)(arg1[4]) * (arg2[1]));
+  uint64_t x66 = ((uint64_t)(arg1[4]) * (arg2[0]));
+  uint64_t x67 = ((uint64_t)(arg1[3]) * (arg2[6]));
+  uint64_t x68 = ((uint64_t)(arg1[3]) * ((arg2[5]) * (uint32_t)0x2));
+  uint64_t x69 = ((uint64_t)(arg1[3]) * (arg2[4]));
+  uint64_t x70 = ((uint64_t)(arg1[3]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x71 = ((uint64_t)(arg1[3]) * (arg2[2]));
+  uint64_t x72 = ((uint64_t)(arg1[3]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x73 = ((uint64_t)(arg1[3]) * (arg2[0]));
+  uint64_t x74 = ((uint64_t)(arg1[2]) * (arg2[7]));
+  uint64_t x75 = ((uint64_t)(arg1[2]) * (arg2[6]));
+  uint64_t x76 = ((uint64_t)(arg1[2]) * (arg2[5]));
+  uint64_t x77 = ((uint64_t)(arg1[2]) * (arg2[4]));
+  uint64_t x78 = ((uint64_t)(arg1[2]) * (arg2[3]));
+  uint64_t x79 = ((uint64_t)(arg1[2]) * (arg2[2]));
+  uint64_t x80 = ((uint64_t)(arg1[2]) * (arg2[1]));
+  uint64_t x81 = ((uint64_t)(arg1[2]) * (arg2[0]));
+  uint64_t x82 = ((uint64_t)(arg1[1]) * (arg2[8]));
+  uint64_t x83 = ((uint64_t)(arg1[1]) * ((arg2[7]) * (uint32_t)0x2));
+  uint64_t x84 = ((uint64_t)(arg1[1]) * (arg2[6]));
+  uint64_t x85 = ((uint64_t)(arg1[1]) * ((arg2[5]) * (uint32_t)0x2));
+  uint64_t x86 = ((uint64_t)(arg1[1]) * (arg2[4]));
+  uint64_t x87 = ((uint64_t)(arg1[1]) * ((arg2[3]) * (uint32_t)0x2));
+  uint64_t x88 = ((uint64_t)(arg1[1]) * (arg2[2]));
+  uint64_t x89 = ((uint64_t)(arg1[1]) * ((arg2[1]) * (uint32_t)0x2));
+  uint64_t x90 = ((uint64_t)(arg1[1]) * (arg2[0]));
+  uint64_t x91 = ((uint64_t)(arg1[0]) * (arg2[9]));
+  uint64_t x92 = ((uint64_t)(arg1[0]) * (arg2[8]));
+  uint64_t x93 = ((uint64_t)(arg1[0]) * (arg2[7]));
+  uint64_t x94 = ((uint64_t)(arg1[0]) * (arg2[6]));
+  uint64_t x95 = ((uint64_t)(arg1[0]) * (arg2[5]));
+  uint64_t x96 = ((uint64_t)(arg1[0]) * (arg2[4]));
+  uint64_t x97 = ((uint64_t)(arg1[0]) * (arg2[3]));
+  uint64_t x98 = ((uint64_t)(arg1[0]) * (arg2[2]));
+  uint64_t x99 = ((uint64_t)(arg1[0]) * (arg2[1]));
+  uint64_t x100 = ((uint64_t)(arg1[0]) * (arg2[0]));
+  uint64_t x101 = (x100 + (x45 + (x44 + (x42 + (x39 + (x35 + (x30 + (x24 + (x17 + x9)))))))));
+  uint64_t x102 = (x101 >> 26);
+  uint32_t x103 = (uint32_t)(x101 & UINT32_C(0x3ffffff));
+  uint64_t x104 = (x91 + (x82 + (x74 + (x67 + (x61 + (x56 + (x52 + (x49 + (x47 + x46)))))))));
+  uint64_t x105 = (x92 + (x83 + (x75 + (x68 + (x62 + (x57 + (x53 + (x50 + (x48 + x1)))))))));
+  uint64_t x106 = (x93 + (x84 + (x76 + (x69 + (x63 + (x58 + (x54 + (x51 + (x10 + x2)))))))));
+  uint64_t x107 = (x94 + (x85 + (x77 + (x70 + (x64 + (x59 + (x55 + (x18 + (x11 + x3)))))))));
+  uint64_t x108 = (x95 + (x86 + (x78 + (x71 + (x65 + (x60 + (x25 + (x19 + (x12 + x4)))))))));
+  uint64_t x109 = (x96 + (x87 + (x79 + (x72 + (x66 + (x31 + (x26 + (x20 + (x13 + x5)))))))));
+  uint64_t x110 = (x97 + (x88 + (x80 + (x73 + (x36 + (x32 + (x27 + (x21 + (x14 + x6)))))))));
+  uint64_t x111 = (x98 + (x89 + (x81 + (x40 + (x37 + (x33 + (x28 + (x22 + (x15 + x7)))))))));
+  uint64_t x112 = (x99 + (x90 + (x43 + (x41 + (x38 + (x34 + (x29 + (x23 + (x16 + x8)))))))));
+  uint64_t x113 = (x102 + x112);
+  uint64_t x114 = (x113 >> 25);
+  uint32_t x115 = (uint32_t)(x113 & UINT32_C(0x1ffffff));
+  uint64_t x116 = (x114 + x111);
+  uint64_t x117 = (x116 >> 26);
+  uint32_t x118 = (uint32_t)(x116 & UINT32_C(0x3ffffff));
+  uint64_t x119 = (x117 + x110);
+  uint64_t x120 = (x119 >> 25);
+  uint32_t x121 = (uint32_t)(x119 & UINT32_C(0x1ffffff));
+  uint64_t x122 = (x120 + x109);
+  uint64_t x123 = (x122 >> 26);
+  uint32_t x124 = (uint32_t)(x122 & UINT32_C(0x3ffffff));
+  uint64_t x125 = (x123 + x108);
+  uint64_t x126 = (x125 >> 25);
+  uint32_t x127 = (uint32_t)(x125 & UINT32_C(0x1ffffff));
+  uint64_t x128 = (x126 + x107);
+  uint64_t x129 = (x128 >> 26);
+  uint32_t x130 = (uint32_t)(x128 & UINT32_C(0x3ffffff));
+  uint64_t x131 = (x129 + x106);
+  uint64_t x132 = (x131 >> 25);
+  uint32_t x133 = (uint32_t)(x131 & UINT32_C(0x1ffffff));
+  uint64_t x134 = (x132 + x105);
+  uint64_t x135 = (x134 >> 26);
+  uint32_t x136 = (uint32_t)(x134 & UINT32_C(0x3ffffff));
+  uint64_t x137 = (x135 + x104);
+  uint64_t x138 = (x137 >> 25);
+  uint32_t x139 = (uint32_t)(x137 & UINT32_C(0x1ffffff));
+  uint64_t x140 = (x138 * (uint64_t)UINT8_C(0x13));
+  uint64_t x141 = (x103 + x140);
+  uint32_t x142 = (uint32_t)(x141 >> 26);
+  uint32_t x143 = (uint32_t)(x141 & UINT32_C(0x3ffffff));
+  uint32_t x144 = (x142 + x115);
+  uint32_t x145 = (x144 >> 25);
+  uint32_t x146 = (x144 & UINT32_C(0x1ffffff));
+  uint32_t x147 = (x145 + x118);
+  out1[0] = x143;
+  out1[1] = x146;
+  out1[2] = x147;
+  out1[3] = x121;
+  out1[4] = x124;
+  out1[5] = x127;
+  out1[6] = x130;
+  out1[7] = x133;
+  out1[8] = x136;
+  out1[9] = x139;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_square(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = ((arg1[9]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x2 = (x1 * (uint32_t)0x2);
+  uint32_t x3 = ((arg1[9]) * (uint32_t)0x2);
+  uint32_t x4 = ((arg1[8]) * (uint32_t)UINT8_C(0x13));
+  uint64_t x5 = (x4 * (uint64_t)0x2);
+  uint32_t x6 = ((arg1[8]) * (uint32_t)0x2);
+  uint32_t x7 = ((arg1[7]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x8 = (x7 * (uint32_t)0x2);
+  uint32_t x9 = ((arg1[7]) * (uint32_t)0x2);
+  uint32_t x10 = ((arg1[6]) * (uint32_t)UINT8_C(0x13));
+  uint64_t x11 = (x10 * (uint64_t)0x2);
+  uint32_t x12 = ((arg1[6]) * (uint32_t)0x2);
+  uint32_t x13 = ((arg1[5]) * (uint32_t)UINT8_C(0x13));
+  uint32_t x14 = ((arg1[5]) * (uint32_t)0x2);
+  uint32_t x15 = ((arg1[4]) * (uint32_t)0x2);
+  uint32_t x16 = ((arg1[3]) * (uint32_t)0x2);
+  uint32_t x17 = ((arg1[2]) * (uint32_t)0x2);
+  uint32_t x18 = ((arg1[1]) * (uint32_t)0x2);
+  uint64_t x19 = ((uint64_t)(arg1[9]) * (x1 * (uint32_t)0x2));
+  uint64_t x20 = ((uint64_t)(arg1[8]) * x2);
+  uint64_t x21 = ((uint64_t)(arg1[8]) * x4);
+  uint64_t x22 = ((arg1[7]) * (x2 * (uint64_t)0x2));
+  uint64_t x23 = ((arg1[7]) * x5);
+  uint64_t x24 = ((uint64_t)(arg1[7]) * (x7 * (uint32_t)0x2));
+  uint64_t x25 = ((uint64_t)(arg1[6]) * x2);
+  uint64_t x26 = ((arg1[6]) * x5);
+  uint64_t x27 = ((uint64_t)(arg1[6]) * x8);
+  uint64_t x28 = ((uint64_t)(arg1[6]) * x10);
+  uint64_t x29 = ((arg1[5]) * (x2 * (uint64_t)0x2));
+  uint64_t x30 = ((arg1[5]) * x5);
+  uint64_t x31 = ((arg1[5]) * (x8 * (uint64_t)0x2));
+  uint64_t x32 = ((arg1[5]) * x11);
+  uint64_t x33 = ((uint64_t)(arg1[5]) * (x13 * (uint32_t)0x2));
+  uint64_t x34 = ((uint64_t)(arg1[4]) * x2);
+  uint64_t x35 = ((arg1[4]) * x5);
+  uint64_t x36 = ((uint64_t)(arg1[4]) * x8);
+  uint64_t x37 = ((arg1[4]) * x11);
+  uint64_t x38 = ((uint64_t)(arg1[4]) * x14);
+  uint64_t x39 = ((uint64_t)(arg1[4]) * (arg1[4]));
+  uint64_t x40 = ((arg1[3]) * (x2 * (uint64_t)0x2));
+  uint64_t x41 = ((arg1[3]) * x5);
+  uint64_t x42 = ((arg1[3]) * (x8 * (uint64_t)0x2));
+  uint64_t x43 = ((uint64_t)(arg1[3]) * x12);
+  uint64_t x44 = ((uint64_t)(arg1[3]) * (x14 * (uint32_t)0x2));
+  uint64_t x45 = ((uint64_t)(arg1[3]) * x15);
+  uint64_t x46 = ((uint64_t)(arg1[3]) * ((arg1[3]) * (uint32_t)0x2));
+  uint64_t x47 = ((uint64_t)(arg1[2]) * x2);
+  uint64_t x48 = ((arg1[2]) * x5);
+  uint64_t x49 = ((uint64_t)(arg1[2]) * x9);
+  uint64_t x50 = ((uint64_t)(arg1[2]) * x12);
+  uint64_t x51 = ((uint64_t)(arg1[2]) * x14);
+  uint64_t x52 = ((uint64_t)(arg1[2]) * x15);
+  uint64_t x53 = ((uint64_t)(arg1[2]) * x16);
+  uint64_t x54 = ((uint64_t)(arg1[2]) * (arg1[2]));
+  uint64_t x55 = ((arg1[1]) * (x2 * (uint64_t)0x2));
+  uint64_t x56 = ((uint64_t)(arg1[1]) * x6);
+  uint64_t x57 = ((uint64_t)(arg1[1]) * (x9 * (uint32_t)0x2));
+  uint64_t x58 = ((uint64_t)(arg1[1]) * x12);
+  uint64_t x59 = ((uint64_t)(arg1[1]) * (x14 * (uint32_t)0x2));
+  uint64_t x60 = ((uint64_t)(arg1[1]) * x15);
+  uint64_t x61 = ((uint64_t)(arg1[1]) * (x16 * (uint32_t)0x2));
+  uint64_t x62 = ((uint64_t)(arg1[1]) * x17);
+  uint64_t x63 = ((uint64_t)(arg1[1]) * ((arg1[1]) * (uint32_t)0x2));
+  uint64_t x64 = ((uint64_t)(arg1[0]) * x3);
+  uint64_t x65 = ((uint64_t)(arg1[0]) * x6);
+  uint64_t x66 = ((uint64_t)(arg1[0]) * x9);
+  uint64_t x67 = ((uint64_t)(arg1[0]) * x12);
+  uint64_t x68 = ((uint64_t)(arg1[0]) * x14);
+  uint64_t x69 = ((uint64_t)(arg1[0]) * x15);
+  uint64_t x70 = ((uint64_t)(arg1[0]) * x16);
+  uint64_t x71 = ((uint64_t)(arg1[0]) * x17);
+  uint64_t x72 = ((uint64_t)(arg1[0]) * x18);
+  uint64_t x73 = ((uint64_t)(arg1[0]) * (arg1[0]));
+  uint64_t x74 = (x73 + (x55 + (x48 + (x42 + (x37 + x33)))));
+  uint64_t x75 = (x74 >> 26);
+  uint32_t x76 = (uint32_t)(x74 & UINT32_C(0x3ffffff));
+  uint64_t x77 = (x64 + (x56 + (x49 + (x43 + x38))));
+  uint64_t x78 = (x65 + (x57 + (x50 + (x44 + (x39 + x19)))));
+  uint64_t x79 = (x66 + (x58 + (x51 + (x45 + x20))));
+  uint64_t x80 = (x67 + (x59 + (x52 + (x46 + (x22 + x21)))));
+  uint64_t x81 = (x68 + (x60 + (x53 + (x25 + x23))));
+  uint64_t x82 = (x69 + (x61 + (x54 + (x29 + (x26 + x24)))));
+  uint64_t x83 = (x70 + (x62 + (x34 + (x30 + x27))));
+  uint64_t x84 = (x71 + (x63 + (x40 + (x35 + (x31 + x28)))));
+  uint64_t x85 = (x72 + (x47 + (x41 + (x36 + x32))));
+  uint64_t x86 = (x75 + x85);
+  uint64_t x87 = (x86 >> 25);
+  uint32_t x88 = (uint32_t)(x86 & UINT32_C(0x1ffffff));
+  uint64_t x89 = (x87 + x84);
+  uint64_t x90 = (x89 >> 26);
+  uint32_t x91 = (uint32_t)(x89 & UINT32_C(0x3ffffff));
+  uint64_t x92 = (x90 + x83);
+  uint64_t x93 = (x92 >> 25);
+  uint32_t x94 = (uint32_t)(x92 & UINT32_C(0x1ffffff));
+  uint64_t x95 = (x93 + x82);
+  uint64_t x96 = (x95 >> 26);
+  uint32_t x97 = (uint32_t)(x95 & UINT32_C(0x3ffffff));
+  uint64_t x98 = (x96 + x81);
+  uint64_t x99 = (x98 >> 25);
+  uint32_t x100 = (uint32_t)(x98 & UINT32_C(0x1ffffff));
+  uint64_t x101 = (x99 + x80);
+  uint64_t x102 = (x101 >> 26);
+  uint32_t x103 = (uint32_t)(x101 & UINT32_C(0x3ffffff));
+  uint64_t x104 = (x102 + x79);
+  uint64_t x105 = (x104 >> 25);
+  uint32_t x106 = (uint32_t)(x104 & UINT32_C(0x1ffffff));
+  uint64_t x107 = (x105 + x78);
+  uint64_t x108 = (x107 >> 26);
+  uint32_t x109 = (uint32_t)(x107 & UINT32_C(0x3ffffff));
+  uint64_t x110 = (x108 + x77);
+  uint64_t x111 = (x110 >> 25);
+  uint32_t x112 = (uint32_t)(x110 & UINT32_C(0x1ffffff));
+  uint64_t x113 = (x111 * (uint64_t)UINT8_C(0x13));
+  uint64_t x114 = (x76 + x113);
+  uint32_t x115 = (uint32_t)(x114 >> 26);
+  uint32_t x116 = (uint32_t)(x114 & UINT32_C(0x3ffffff));
+  uint32_t x117 = (x115 + x88);
+  uint32_t x118 = (x117 >> 25);
+  uint32_t x119 = (x117 & UINT32_C(0x1ffffff));
+  uint32_t x120 = (x118 + x91);
+  out1[0] = x116;
+  out1[1] = x119;
+  out1[2] = x120;
+  out1[3] = x94;
+  out1[4] = x97;
+  out1[5] = x100;
+  out1[6] = x103;
+  out1[7] = x106;
+  out1[8] = x109;
+  out1[9] = x112;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry_scmul_121666(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint64_t x1 = ((uint64_t)UINT32_C(0x1db42) * (arg1[9]));
+  uint64_t x2 = ((uint64_t)UINT32_C(0x1db42) * (arg1[8]));
+  uint64_t x3 = ((uint64_t)UINT32_C(0x1db42) * (arg1[7]));
+  uint64_t x4 = ((uint64_t)UINT32_C(0x1db42) * (arg1[6]));
+  uint64_t x5 = ((uint64_t)UINT32_C(0x1db42) * (arg1[5]));
+  uint64_t x6 = ((uint64_t)UINT32_C(0x1db42) * (arg1[4]));
+  uint64_t x7 = ((uint64_t)UINT32_C(0x1db42) * (arg1[3]));
+  uint64_t x8 = ((uint64_t)UINT32_C(0x1db42) * (arg1[2]));
+  uint64_t x9 = ((uint64_t)UINT32_C(0x1db42) * (arg1[1]));
+  uint64_t x10 = ((uint64_t)UINT32_C(0x1db42) * (arg1[0]));
+  uint32_t x11 = (uint32_t)(x10 >> 26);
+  uint32_t x12 = (uint32_t)(x10 & UINT32_C(0x3ffffff));
+  uint64_t x13 = (x11 + x9);
+  uint32_t x14 = (uint32_t)(x13 >> 25);
+  uint32_t x15 = (uint32_t)(x13 & UINT32_C(0x1ffffff));
+  uint64_t x16 = (x14 + x8);
+  uint32_t x17 = (uint32_t)(x16 >> 26);
+  uint32_t x18 = (uint32_t)(x16 & UINT32_C(0x3ffffff));
+  uint64_t x19 = (x17 + x7);
+  uint32_t x20 = (uint32_t)(x19 >> 25);
+  uint32_t x21 = (uint32_t)(x19 & UINT32_C(0x1ffffff));
+  uint64_t x22 = (x20 + x6);
+  uint32_t x23 = (uint32_t)(x22 >> 26);
+  uint32_t x24 = (uint32_t)(x22 & UINT32_C(0x3ffffff));
+  uint64_t x25 = (x23 + x5);
+  uint32_t x26 = (uint32_t)(x25 >> 25);
+  uint32_t x27 = (uint32_t)(x25 & UINT32_C(0x1ffffff));
+  uint64_t x28 = (x26 + x4);
+  uint32_t x29 = (uint32_t)(x28 >> 26);
+  uint32_t x30 = (uint32_t)(x28 & UINT32_C(0x3ffffff));
+  uint64_t x31 = (x29 + x3);
+  uint32_t x32 = (uint32_t)(x31 >> 25);
+  uint32_t x33 = (uint32_t)(x31 & UINT32_C(0x1ffffff));
+  uint64_t x34 = (x32 + x2);
+  uint32_t x35 = (uint32_t)(x34 >> 26);
+  uint32_t x36 = (uint32_t)(x34 & UINT32_C(0x3ffffff));
+  uint64_t x37 = (x35 + x1);
+  uint32_t x38 = (uint32_t)(x37 >> 25);
+  uint32_t x39 = (uint32_t)(x37 & UINT32_C(0x1ffffff));
+  uint32_t x40 = (x38 * (uint32_t)UINT8_C(0x13));
+  uint32_t x41 = (x12 + x40);
+  uint32_t x42 = (x41 >> 26);
+  uint32_t x43 = (x41 & UINT32_C(0x3ffffff));
+  uint32_t x44 = (x42 + x15);
+  uint32_t x45 = (x44 >> 25);
+  uint32_t x46 = (x44 & UINT32_C(0x1ffffff));
+  uint32_t x47 = (x45 + x18);
+  out1[0] = x43;
+  out1[1] = x46;
+  out1[2] = x47;
+  out1[3] = x21;
+  out1[4] = x24;
+  out1[5] = x27;
+  out1[6] = x30;
+  out1[7] = x33;
+  out1[8] = x36;
+  out1[9] = x39;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_carry(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = (arg1[0]);
+  uint32_t x2 = ((x1 >> 26) + (arg1[1]));
+  uint32_t x3 = ((x2 >> 25) + (arg1[2]));
+  uint32_t x4 = ((x3 >> 26) + (arg1[3]));
+  uint32_t x5 = ((x4 >> 25) + (arg1[4]));
+  uint32_t x6 = ((x5 >> 26) + (arg1[5]));
+  uint32_t x7 = ((x6 >> 25) + (arg1[6]));
+  uint32_t x8 = ((x7 >> 26) + (arg1[7]));
+  uint32_t x9 = ((x8 >> 25) + (arg1[8]));
+  uint32_t x10 = ((x9 >> 26) + (arg1[9]));
+  uint32_t x11 = ((x1 & UINT32_C(0x3ffffff)) + ((x10 >> 25) * (uint32_t)UINT8_C(0x13)));
+  uint32_t x12 = ((x11 >> 26) + (x2 & UINT32_C(0x1ffffff)));
+  uint32_t x13 = (x11 & UINT32_C(0x3ffffff));
+  uint32_t x14 = (x12 & UINT32_C(0x1ffffff));
+  uint32_t x15 = ((x12 >> 25) + (x3 & UINT32_C(0x3ffffff)));
+  uint32_t x16 = (x4 & UINT32_C(0x1ffffff));
+  uint32_t x17 = (x5 & UINT32_C(0x3ffffff));
+  uint32_t x18 = (x6 & UINT32_C(0x1ffffff));
+  uint32_t x19 = (x7 & UINT32_C(0x3ffffff));
+  uint32_t x20 = (x8 & UINT32_C(0x1ffffff));
+  uint32_t x21 = (x9 & UINT32_C(0x3ffffff));
+  uint32_t x22 = (x10 & UINT32_C(0x1ffffff));
+  out1[0] = x13;
+  out1[1] = x14;
+  out1[2] = x15;
+  out1[3] = x16;
+  out1[4] = x17;
+  out1[5] = x18;
+  out1[6] = x19;
+  out1[7] = x20;
+  out1[8] = x21;
+  out1[9] = x22;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ *   arg2: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_add(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint32_t x1 = ((arg1[0]) + (arg2[0]));
+  uint32_t x2 = ((arg1[1]) + (arg2[1]));
+  uint32_t x3 = ((arg1[2]) + (arg2[2]));
+  uint32_t x4 = ((arg1[3]) + (arg2[3]));
+  uint32_t x5 = ((arg1[4]) + (arg2[4]));
+  uint32_t x6 = ((arg1[5]) + (arg2[5]));
+  uint32_t x7 = ((arg1[6]) + (arg2[6]));
+  uint32_t x8 = ((arg1[7]) + (arg2[7]));
+  uint32_t x9 = ((arg1[8]) + (arg2[8]));
+  uint32_t x10 = ((arg1[9]) + (arg2[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ *   arg2: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_sub(uint32_t out1[10], const uint32_t arg1[10], const uint32_t arg2[10]) {
+  uint32_t x1 = ((UINT32_C(0x7ffffda) + (arg1[0])) - (arg2[0]));
+  uint32_t x2 = ((UINT32_C(0x3fffffe) + (arg1[1])) - (arg2[1]));
+  uint32_t x3 = ((UINT32_C(0x7fffffe) + (arg1[2])) - (arg2[2]));
+  uint32_t x4 = ((UINT32_C(0x3fffffe) + (arg1[3])) - (arg2[3]));
+  uint32_t x5 = ((UINT32_C(0x7fffffe) + (arg1[4])) - (arg2[4]));
+  uint32_t x6 = ((UINT32_C(0x3fffffe) + (arg1[5])) - (arg2[5]));
+  uint32_t x7 = ((UINT32_C(0x7fffffe) + (arg1[6])) - (arg2[6]));
+  uint32_t x8 = ((UINT32_C(0x3fffffe) + (arg1[7])) - (arg2[7]));
+  uint32_t x9 = ((UINT32_C(0x7fffffe) + (arg1[8])) - (arg2[8]));
+  uint32_t x10 = ((UINT32_C(0x3fffffe) + (arg1[9])) - (arg2[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999], [0x0 ~> 0xd333332], [0x0 ~> 0x6999999]]
+ */
+static void fiat_25519_opp(uint32_t out1[10], const uint32_t arg1[10]) {
+  uint32_t x1 = (UINT32_C(0x7ffffda) - (arg1[0]));
+  uint32_t x2 = (UINT32_C(0x3fffffe) - (arg1[1]));
+  uint32_t x3 = (UINT32_C(0x7fffffe) - (arg1[2]));
+  uint32_t x4 = (UINT32_C(0x3fffffe) - (arg1[3]));
+  uint32_t x5 = (UINT32_C(0x7fffffe) - (arg1[4]));
+  uint32_t x6 = (UINT32_C(0x3fffffe) - (arg1[5]));
+  uint32_t x7 = (UINT32_C(0x7fffffe) - (arg1[6]));
+  uint32_t x8 = (UINT32_C(0x3fffffe) - (arg1[7]));
+  uint32_t x9 = (UINT32_C(0x7fffffe) - (arg1[8]));
+  uint32_t x10 = (UINT32_C(0x3fffffe) - (arg1[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_25519_selectznz(uint32_t out1[10], fiat_25519_uint1 arg1, const uint32_t arg2[10], const uint32_t arg3[10]) {
+  uint32_t x1;
+  fiat_25519_cmovznz_u32(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint32_t x2;
+  fiat_25519_cmovznz_u32(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint32_t x3;
+  fiat_25519_cmovznz_u32(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint32_t x4;
+  fiat_25519_cmovznz_u32(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint32_t x5;
+  fiat_25519_cmovznz_u32(&x5, arg1, (arg2[4]), (arg3[4]));
+  uint32_t x6;
+  fiat_25519_cmovznz_u32(&x6, arg1, (arg2[5]), (arg3[5]));
+  uint32_t x7;
+  fiat_25519_cmovznz_u32(&x7, arg1, (arg2[6]), (arg3[6]));
+  uint32_t x8;
+  fiat_25519_cmovznz_u32(&x8, arg1, (arg2[7]), (arg3[7]));
+  uint32_t x9;
+  fiat_25519_cmovznz_u32(&x9, arg1, (arg2[8]), (arg3[8]));
+  uint32_t x10;
+  fiat_25519_cmovznz_u32(&x10, arg1, (arg2[9]), (arg3[9]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+  out1[8] = x9;
+  out1[9] = x10;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ */
+static void fiat_25519_to_bytes(uint8_t out1[32], const uint32_t arg1[10]) {
+  uint32_t x1;
+  fiat_25519_uint1 x2;
+  fiat_25519_subborrowx_u26(&x1, &x2, 0x0, (arg1[0]), UINT32_C(0x3ffffed));
+  uint32_t x3;
+  fiat_25519_uint1 x4;
+  fiat_25519_subborrowx_u25(&x3, &x4, x2, (arg1[1]), UINT32_C(0x1ffffff));
+  uint32_t x5;
+  fiat_25519_uint1 x6;
+  fiat_25519_subborrowx_u26(&x5, &x6, x4, (arg1[2]), UINT32_C(0x3ffffff));
+  uint32_t x7;
+  fiat_25519_uint1 x8;
+  fiat_25519_subborrowx_u25(&x7, &x8, x6, (arg1[3]), UINT32_C(0x1ffffff));
+  uint32_t x9;
+  fiat_25519_uint1 x10;
+  fiat_25519_subborrowx_u26(&x9, &x10, x8, (arg1[4]), UINT32_C(0x3ffffff));
+  uint32_t x11;
+  fiat_25519_uint1 x12;
+  fiat_25519_subborrowx_u25(&x11, &x12, x10, (arg1[5]), UINT32_C(0x1ffffff));
+  uint32_t x13;
+  fiat_25519_uint1 x14;
+  fiat_25519_subborrowx_u26(&x13, &x14, x12, (arg1[6]), UINT32_C(0x3ffffff));
+  uint32_t x15;
+  fiat_25519_uint1 x16;
+  fiat_25519_subborrowx_u25(&x15, &x16, x14, (arg1[7]), UINT32_C(0x1ffffff));
+  uint32_t x17;
+  fiat_25519_uint1 x18;
+  fiat_25519_subborrowx_u26(&x17, &x18, x16, (arg1[8]), UINT32_C(0x3ffffff));
+  uint32_t x19;
+  fiat_25519_uint1 x20;
+  fiat_25519_subborrowx_u25(&x19, &x20, x18, (arg1[9]), UINT32_C(0x1ffffff));
+  uint32_t x21;
+  fiat_25519_cmovznz_u32(&x21, x20, 0x0, UINT32_C(0xffffffff));
+  uint32_t x22;
+  fiat_25519_uint1 x23;
+  fiat_25519_addcarryx_u26(&x22, &x23, 0x0, (x21 & UINT32_C(0x3ffffed)), x1);
+  uint32_t x24;
+  fiat_25519_uint1 x25;
+  fiat_25519_addcarryx_u25(&x24, &x25, x23, (x21 & UINT32_C(0x1ffffff)), x3);
+  uint32_t x26;
+  fiat_25519_uint1 x27;
+  fiat_25519_addcarryx_u26(&x26, &x27, x25, (x21 & UINT32_C(0x3ffffff)), x5);
+  uint32_t x28;
+  fiat_25519_uint1 x29;
+  fiat_25519_addcarryx_u25(&x28, &x29, x27, (x21 & UINT32_C(0x1ffffff)), x7);
+  uint32_t x30;
+  fiat_25519_uint1 x31;
+  fiat_25519_addcarryx_u26(&x30, &x31, x29, (x21 & UINT32_C(0x3ffffff)), x9);
+  uint32_t x32;
+  fiat_25519_uint1 x33;
+  fiat_25519_addcarryx_u25(&x32, &x33, x31, (x21 & UINT32_C(0x1ffffff)), x11);
+  uint32_t x34;
+  fiat_25519_uint1 x35;
+  fiat_25519_addcarryx_u26(&x34, &x35, x33, (x21 & UINT32_C(0x3ffffff)), x13);
+  uint32_t x36;
+  fiat_25519_uint1 x37;
+  fiat_25519_addcarryx_u25(&x36, &x37, x35, (x21 & UINT32_C(0x1ffffff)), x15);
+  uint32_t x38;
+  fiat_25519_uint1 x39;
+  fiat_25519_addcarryx_u26(&x38, &x39, x37, (x21 & UINT32_C(0x3ffffff)), x17);
+  uint32_t x40;
+  fiat_25519_uint1 x41;
+  fiat_25519_addcarryx_u25(&x40, &x41, x39, (x21 & UINT32_C(0x1ffffff)), x19);
+  uint32_t x42 = (x40 << 6);
+  uint32_t x43 = (x38 << 4);
+  uint32_t x44 = (x36 << 3);
+  uint32_t x45 = (x34 * (uint32_t)0x2);
+  uint32_t x46 = (x30 << 6);
+  uint32_t x47 = (x28 << 5);
+  uint32_t x48 = (x26 << 3);
+  uint32_t x49 = (x24 << 2);
+  uint32_t x50 = (x22 >> 8);
+  uint8_t x51 = (uint8_t)(x22 & UINT8_C(0xff));
+  uint32_t x52 = (x50 >> 8);
+  uint8_t x53 = (uint8_t)(x50 & UINT8_C(0xff));
+  uint8_t x54 = (uint8_t)(x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint32_t x56 = (x54 + x49);
+  uint32_t x57 = (x56 >> 8);
+  uint8_t x58 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint32_t x59 = (x57 >> 8);
+  uint8_t x60 = (uint8_t)(x57 & UINT8_C(0xff));
+  uint8_t x61 = (uint8_t)(x59 >> 8);
+  uint8_t x62 = (uint8_t)(x59 & UINT8_C(0xff));
+  uint32_t x63 = (x61 + x48);
+  uint32_t x64 = (x63 >> 8);
+  uint8_t x65 = (uint8_t)(x63 & UINT8_C(0xff));
+  uint32_t x66 = (x64 >> 8);
+  uint8_t x67 = (uint8_t)(x64 & UINT8_C(0xff));
+  uint8_t x68 = (uint8_t)(x66 >> 8);
+  uint8_t x69 = (uint8_t)(x66 & UINT8_C(0xff));
+  uint32_t x70 = (x68 + x47);
+  uint32_t x71 = (x70 >> 8);
+  uint8_t x72 = (uint8_t)(x70 & UINT8_C(0xff));
+  uint32_t x73 = (x71 >> 8);
+  uint8_t x74 = (uint8_t)(x71 & UINT8_C(0xff));
+  uint8_t x75 = (uint8_t)(x73 >> 8);
+  uint8_t x76 = (uint8_t)(x73 & UINT8_C(0xff));
+  uint32_t x77 = (x75 + x46);
+  uint32_t x78 = (x77 >> 8);
+  uint8_t x79 = (uint8_t)(x77 & UINT8_C(0xff));
+  uint32_t x80 = (x78 >> 8);
+  uint8_t x81 = (uint8_t)(x78 & UINT8_C(0xff));
+  uint8_t x82 = (uint8_t)(x80 >> 8);
+  uint8_t x83 = (uint8_t)(x80 & UINT8_C(0xff));
+  uint8_t x84 = (uint8_t)(x82 & UINT8_C(0xff));
+  uint32_t x85 = (x32 >> 8);
+  uint8_t x86 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint32_t x87 = (x85 >> 8);
+  uint8_t x88 = (uint8_t)(x85 & UINT8_C(0xff));
+  fiat_25519_uint1 x89 = (fiat_25519_uint1)(x87 >> 8);
+  uint8_t x90 = (uint8_t)(x87 & UINT8_C(0xff));
+  uint32_t x91 = (x89 + x45);
+  uint32_t x92 = (x91 >> 8);
+  uint8_t x93 = (uint8_t)(x91 & UINT8_C(0xff));
+  uint32_t x94 = (x92 >> 8);
+  uint8_t x95 = (uint8_t)(x92 & UINT8_C(0xff));
+  uint8_t x96 = (uint8_t)(x94 >> 8);
+  uint8_t x97 = (uint8_t)(x94 & UINT8_C(0xff));
+  uint32_t x98 = (x96 + x44);
+  uint32_t x99 = (x98 >> 8);
+  uint8_t x100 = (uint8_t)(x98 & UINT8_C(0xff));
+  uint32_t x101 = (x99 >> 8);
+  uint8_t x102 = (uint8_t)(x99 & UINT8_C(0xff));
+  uint8_t x103 = (uint8_t)(x101 >> 8);
+  uint8_t x104 = (uint8_t)(x101 & UINT8_C(0xff));
+  uint32_t x105 = (x103 + x43);
+  uint32_t x106 = (x105 >> 8);
+  uint8_t x107 = (uint8_t)(x105 & UINT8_C(0xff));
+  uint32_t x108 = (x106 >> 8);
+  uint8_t x109 = (uint8_t)(x106 & UINT8_C(0xff));
+  uint8_t x110 = (uint8_t)(x108 >> 8);
+  uint8_t x111 = (uint8_t)(x108 & UINT8_C(0xff));
+  uint32_t x112 = (x110 + x42);
+  uint32_t x113 = (x112 >> 8);
+  uint8_t x114 = (uint8_t)(x112 & UINT8_C(0xff));
+  uint32_t x115 = (x113 >> 8);
+  uint8_t x116 = (uint8_t)(x113 & UINT8_C(0xff));
+  uint8_t x117 = (uint8_t)(x115 >> 8);
+  uint8_t x118 = (uint8_t)(x115 & UINT8_C(0xff));
+  out1[0] = x51;
+  out1[1] = x53;
+  out1[2] = x55;
+  out1[3] = x58;
+  out1[4] = x60;
+  out1[5] = x62;
+  out1[6] = x65;
+  out1[7] = x67;
+  out1[8] = x69;
+  out1[9] = x72;
+  out1[10] = x74;
+  out1[11] = x76;
+  out1[12] = x79;
+  out1[13] = x81;
+  out1[14] = x83;
+  out1[15] = x84;
+  out1[16] = x86;
+  out1[17] = x88;
+  out1[18] = x90;
+  out1[19] = x93;
+  out1[20] = x95;
+  out1[21] = x97;
+  out1[22] = x100;
+  out1[23] = x102;
+  out1[24] = x104;
+  out1[25] = x107;
+  out1[26] = x109;
+  out1[27] = x111;
+  out1[28] = x114;
+  out1[29] = x116;
+  out1[30] = x118;
+  out1[31] = x117;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333], [0x0 ~> 0x4666666], [0x0 ~> 0x2333333]]
+ */
+static void fiat_25519_from_bytes(uint32_t out1[10], const uint8_t arg1[32]) {
+  uint32_t x1 = ((uint32_t)(arg1[31]) << 18);
+  uint32_t x2 = ((uint32_t)(arg1[30]) << 10);
+  uint32_t x3 = ((uint32_t)(arg1[29]) << 2);
+  uint32_t x4 = ((uint32_t)(arg1[28]) << 20);
+  uint32_t x5 = ((uint32_t)(arg1[27]) << 12);
+  uint32_t x6 = ((uint32_t)(arg1[26]) << 4);
+  uint32_t x7 = ((uint32_t)(arg1[25]) << 21);
+  uint32_t x8 = ((uint32_t)(arg1[24]) << 13);
+  uint32_t x9 = ((uint32_t)(arg1[23]) << 5);
+  uint32_t x10 = ((uint32_t)(arg1[22]) << 23);
+  uint32_t x11 = ((uint32_t)(arg1[21]) << 15);
+  uint32_t x12 = ((uint32_t)(arg1[20]) << 7);
+  uint32_t x13 = ((uint32_t)(arg1[19]) << 24);
+  uint32_t x14 = ((uint32_t)(arg1[18]) << 16);
+  uint32_t x15 = ((uint32_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint32_t x17 = ((uint32_t)(arg1[15]) << 18);
+  uint32_t x18 = ((uint32_t)(arg1[14]) << 10);
+  uint32_t x19 = ((uint32_t)(arg1[13]) << 2);
+  uint32_t x20 = ((uint32_t)(arg1[12]) << 19);
+  uint32_t x21 = ((uint32_t)(arg1[11]) << 11);
+  uint32_t x22 = ((uint32_t)(arg1[10]) << 3);
+  uint32_t x23 = ((uint32_t)(arg1[9]) << 21);
+  uint32_t x24 = ((uint32_t)(arg1[8]) << 13);
+  uint32_t x25 = ((uint32_t)(arg1[7]) << 5);
+  uint32_t x26 = ((uint32_t)(arg1[6]) << 22);
+  uint32_t x27 = ((uint32_t)(arg1[5]) << 14);
+  uint32_t x28 = ((uint32_t)(arg1[4]) << 6);
+  uint32_t x29 = ((uint32_t)(arg1[3]) << 24);
+  uint32_t x30 = ((uint32_t)(arg1[2]) << 16);
+  uint32_t x31 = ((uint32_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint32_t x33 = (x32 + (x31 + (x30 + x29)));
+  uint8_t x34 = (uint8_t)(x33 >> 26);
+  uint32_t x35 = (x33 & UINT32_C(0x3ffffff));
+  uint32_t x36 = (x3 + (x2 + x1));
+  uint32_t x37 = (x6 + (x5 + x4));
+  uint32_t x38 = (x9 + (x8 + x7));
+  uint32_t x39 = (x12 + (x11 + x10));
+  uint32_t x40 = (x16 + (x15 + (x14 + x13)));
+  uint32_t x41 = (x19 + (x18 + x17));
+  uint32_t x42 = (x22 + (x21 + x20));
+  uint32_t x43 = (x25 + (x24 + x23));
+  uint32_t x44 = (x28 + (x27 + x26));
+  uint32_t x45 = (x34 + x44);
+  uint8_t x46 = (uint8_t)(x45 >> 25);
+  uint32_t x47 = (x45 & UINT32_C(0x1ffffff));
+  uint32_t x48 = (x46 + x43);
+  uint8_t x49 = (uint8_t)(x48 >> 26);
+  uint32_t x50 = (x48 & UINT32_C(0x3ffffff));
+  uint32_t x51 = (x49 + x42);
+  uint8_t x52 = (uint8_t)(x51 >> 25);
+  uint32_t x53 = (x51 & UINT32_C(0x1ffffff));
+  uint32_t x54 = (x52 + x41);
+  uint32_t x55 = (x54 & UINT32_C(0x3ffffff));
+  uint8_t x56 = (uint8_t)(x40 >> 25);
+  uint32_t x57 = (x40 & UINT32_C(0x1ffffff));
+  uint32_t x58 = (x56 + x39);
+  uint8_t x59 = (uint8_t)(x58 >> 26);
+  uint32_t x60 = (x58 & UINT32_C(0x3ffffff));
+  uint32_t x61 = (x59 + x38);
+  uint8_t x62 = (uint8_t)(x61 >> 25);
+  uint32_t x63 = (x61 & UINT32_C(0x1ffffff));
+  uint32_t x64 = (x62 + x37);
+  uint8_t x65 = (uint8_t)(x64 >> 26);
+  uint32_t x66 = (x64 & UINT32_C(0x3ffffff));
+  uint32_t x67 = (x65 + x36);
+  out1[0] = x35;
+  out1[1] = x47;
+  out1[2] = x50;
+  out1[3] = x53;
+  out1[4] = x55;
+  out1[5] = x57;
+  out1[6] = x60;
+  out1[7] = x63;
+  out1[8] = x66;
+  out1[9] = x67;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h
new file mode 100644
index 0000000..7c31ff9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h	
@@ -0,0 +1,559 @@
+/* Autogenerated */
+/* curve description: 25519 */
+/* requested operations: carry_mul, carry_square, carry_scmul121666, carry, add, sub, opp, selectznz, to_bytes, from_bytes */
+/* n = 5 (from "5") */
+/* s = 0x8000000000000000000000000000000000000000000000000000000000000000 (from "2^255") */
+/* c = [(1, 19)] (from "1,19") */
+/* machine_wordsize = 64 (from "64") */
+
+#include <stdint.h>
+typedef unsigned char fiat_25519_uint1;
+typedef signed char fiat_25519_int1;
+typedef signed __int128 fiat_25519_int128;
+typedef unsigned __int128 fiat_25519_uint128;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x7ffffffffffff]
+ *   arg3: [0x0 ~> 0x7ffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x7ffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u51(uint64_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  uint64_t x1 = ((arg1 + arg2) + arg3);
+  uint64_t x2 = (x1 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 51);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x7ffffffffffff]
+ *   arg3: [0x0 ~> 0x7ffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x7ffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u51(uint64_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  int64_t x1 = ((int64_t)(arg2 - (int64_t)arg1) - (int64_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 51);
+  uint64_t x3 = (x1 & UINT64_C(0x7ffffffffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_25519_cmovznz_u64(uint64_t* out1, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_25519_uint1 x1 = (!(!arg1));
+  uint64_t x2 = ((fiat_25519_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint64_t x3 = ((value_barrier_u64(x2) & arg3) | (value_barrier_u64(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ *   arg2: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_mul(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  fiat_25519_uint128 x1 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x2 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x3 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[2]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x4 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[1]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x5 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x6 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x7 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[2]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x8 = ((fiat_25519_uint128)(arg1[2]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x9 = ((fiat_25519_uint128)(arg1[2]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x10 = ((fiat_25519_uint128)(arg1[1]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x11 = ((fiat_25519_uint128)(arg1[4]) * (arg2[0]));
+  fiat_25519_uint128 x12 = ((fiat_25519_uint128)(arg1[3]) * (arg2[1]));
+  fiat_25519_uint128 x13 = ((fiat_25519_uint128)(arg1[3]) * (arg2[0]));
+  fiat_25519_uint128 x14 = ((fiat_25519_uint128)(arg1[2]) * (arg2[2]));
+  fiat_25519_uint128 x15 = ((fiat_25519_uint128)(arg1[2]) * (arg2[1]));
+  fiat_25519_uint128 x16 = ((fiat_25519_uint128)(arg1[2]) * (arg2[0]));
+  fiat_25519_uint128 x17 = ((fiat_25519_uint128)(arg1[1]) * (arg2[3]));
+  fiat_25519_uint128 x18 = ((fiat_25519_uint128)(arg1[1]) * (arg2[2]));
+  fiat_25519_uint128 x19 = ((fiat_25519_uint128)(arg1[1]) * (arg2[1]));
+  fiat_25519_uint128 x20 = ((fiat_25519_uint128)(arg1[1]) * (arg2[0]));
+  fiat_25519_uint128 x21 = ((fiat_25519_uint128)(arg1[0]) * (arg2[4]));
+  fiat_25519_uint128 x22 = ((fiat_25519_uint128)(arg1[0]) * (arg2[3]));
+  fiat_25519_uint128 x23 = ((fiat_25519_uint128)(arg1[0]) * (arg2[2]));
+  fiat_25519_uint128 x24 = ((fiat_25519_uint128)(arg1[0]) * (arg2[1]));
+  fiat_25519_uint128 x25 = ((fiat_25519_uint128)(arg1[0]) * (arg2[0]));
+  fiat_25519_uint128 x26 = (x25 + (x10 + (x9 + (x7 + x4))));
+  uint64_t x27 = (uint64_t)(x26 >> 51);
+  uint64_t x28 = (uint64_t)(x26 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x29 = (x21 + (x17 + (x14 + (x12 + x11))));
+  fiat_25519_uint128 x30 = (x22 + (x18 + (x15 + (x13 + x1))));
+  fiat_25519_uint128 x31 = (x23 + (x19 + (x16 + (x5 + x2))));
+  fiat_25519_uint128 x32 = (x24 + (x20 + (x8 + (x6 + x3))));
+  fiat_25519_uint128 x33 = (x27 + x32);
+  uint64_t x34 = (uint64_t)(x33 >> 51);
+  uint64_t x35 = (uint64_t)(x33 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x36 = (x34 + x31);
+  uint64_t x37 = (uint64_t)(x36 >> 51);
+  uint64_t x38 = (uint64_t)(x36 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x39 = (x37 + x30);
+  uint64_t x40 = (uint64_t)(x39 >> 51);
+  uint64_t x41 = (uint64_t)(x39 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x42 = (x40 + x29);
+  uint64_t x43 = (uint64_t)(x42 >> 51);
+  uint64_t x44 = (uint64_t)(x42 & UINT64_C(0x7ffffffffffff));
+  uint64_t x45 = (x43 * (uint64_t)UINT8_C(0x13));
+  uint64_t x46 = (x28 + x45);
+  uint64_t x47 = (x46 >> 51);
+  uint64_t x48 = (x46 & UINT64_C(0x7ffffffffffff));
+  uint64_t x49 = (x47 + x35);
+  uint64_t x50 = (x49 >> 51);
+  uint64_t x51 = (x49 & UINT64_C(0x7ffffffffffff));
+  uint64_t x52 = (x50 + x38);
+  out1[0] = x48;
+  out1[1] = x51;
+  out1[2] = x52;
+  out1[3] = x41;
+  out1[4] = x44;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_square(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = ((arg1[4]) * (uint64_t)UINT8_C(0x13));
+  uint64_t x2 = (x1 * (uint64_t)0x2);
+  uint64_t x3 = ((arg1[4]) * (uint64_t)0x2);
+  uint64_t x4 = ((arg1[3]) * (uint64_t)UINT8_C(0x13));
+  uint64_t x5 = (x4 * (uint64_t)0x2);
+  uint64_t x6 = ((arg1[3]) * (uint64_t)0x2);
+  uint64_t x7 = ((arg1[2]) * (uint64_t)0x2);
+  uint64_t x8 = ((arg1[1]) * (uint64_t)0x2);
+  fiat_25519_uint128 x9 = ((fiat_25519_uint128)(arg1[4]) * x1);
+  fiat_25519_uint128 x10 = ((fiat_25519_uint128)(arg1[3]) * x2);
+  fiat_25519_uint128 x11 = ((fiat_25519_uint128)(arg1[3]) * x4);
+  fiat_25519_uint128 x12 = ((fiat_25519_uint128)(arg1[2]) * x2);
+  fiat_25519_uint128 x13 = ((fiat_25519_uint128)(arg1[2]) * x5);
+  fiat_25519_uint128 x14 = ((fiat_25519_uint128)(arg1[2]) * (arg1[2]));
+  fiat_25519_uint128 x15 = ((fiat_25519_uint128)(arg1[1]) * x2);
+  fiat_25519_uint128 x16 = ((fiat_25519_uint128)(arg1[1]) * x6);
+  fiat_25519_uint128 x17 = ((fiat_25519_uint128)(arg1[1]) * x7);
+  fiat_25519_uint128 x18 = ((fiat_25519_uint128)(arg1[1]) * (arg1[1]));
+  fiat_25519_uint128 x19 = ((fiat_25519_uint128)(arg1[0]) * x3);
+  fiat_25519_uint128 x20 = ((fiat_25519_uint128)(arg1[0]) * x6);
+  fiat_25519_uint128 x21 = ((fiat_25519_uint128)(arg1[0]) * x7);
+  fiat_25519_uint128 x22 = ((fiat_25519_uint128)(arg1[0]) * x8);
+  fiat_25519_uint128 x23 = ((fiat_25519_uint128)(arg1[0]) * (arg1[0]));
+  fiat_25519_uint128 x24 = (x23 + (x15 + x13));
+  uint64_t x25 = (uint64_t)(x24 >> 51);
+  uint64_t x26 = (uint64_t)(x24 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x27 = (x19 + (x16 + x14));
+  fiat_25519_uint128 x28 = (x20 + (x17 + x9));
+  fiat_25519_uint128 x29 = (x21 + (x18 + x10));
+  fiat_25519_uint128 x30 = (x22 + (x12 + x11));
+  fiat_25519_uint128 x31 = (x25 + x30);
+  uint64_t x32 = (uint64_t)(x31 >> 51);
+  uint64_t x33 = (uint64_t)(x31 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x34 = (x32 + x29);
+  uint64_t x35 = (uint64_t)(x34 >> 51);
+  uint64_t x36 = (uint64_t)(x34 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x37 = (x35 + x28);
+  uint64_t x38 = (uint64_t)(x37 >> 51);
+  uint64_t x39 = (uint64_t)(x37 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x40 = (x38 + x27);
+  uint64_t x41 = (uint64_t)(x40 >> 51);
+  uint64_t x42 = (uint64_t)(x40 & UINT64_C(0x7ffffffffffff));
+  uint64_t x43 = (x41 * (uint64_t)UINT8_C(0x13));
+  uint64_t x44 = (x26 + x43);
+  uint64_t x45 = (x44 >> 51);
+  uint64_t x46 = (x44 & UINT64_C(0x7ffffffffffff));
+  uint64_t x47 = (x45 + x33);
+  uint64_t x48 = (x47 >> 51);
+  uint64_t x49 = (x47 & UINT64_C(0x7ffffffffffff));
+  uint64_t x50 = (x48 + x36);
+  out1[0] = x46;
+  out1[1] = x49;
+  out1[2] = x50;
+  out1[3] = x39;
+  out1[4] = x42;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_scmul_121666(uint64_t out1[5], const uint64_t arg1[5]) {
+  fiat_25519_uint128 x1 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[4]));
+  fiat_25519_uint128 x2 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[3]));
+  fiat_25519_uint128 x3 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[2]));
+  fiat_25519_uint128 x4 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[1]));
+  fiat_25519_uint128 x5 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[0]));
+  uint64_t x6 = (uint64_t)(x5 >> 51);
+  uint64_t x7 = (uint64_t)(x5 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x8 = (x6 + x4);
+  uint64_t x9 = (uint64_t)(x8 >> 51);
+  uint64_t x10 = (uint64_t)(x8 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x11 = (x9 + x3);
+  uint64_t x12 = (uint64_t)(x11 >> 51);
+  uint64_t x13 = (uint64_t)(x11 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x14 = (x12 + x2);
+  uint64_t x15 = (uint64_t)(x14 >> 51);
+  uint64_t x16 = (uint64_t)(x14 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x17 = (x15 + x1);
+  uint64_t x18 = (uint64_t)(x17 >> 51);
+  uint64_t x19 = (uint64_t)(x17 & UINT64_C(0x7ffffffffffff));
+  uint64_t x20 = (x18 * (uint64_t)UINT8_C(0x13));
+  uint64_t x21 = (x7 + x20);
+  uint64_t x22 = (x21 >> 51);
+  uint64_t x23 = (x21 & UINT64_C(0x7ffffffffffff));
+  uint64_t x24 = (x22 + x10);
+  uint64_t x25 = (x24 >> 51);
+  uint64_t x26 = (x24 & UINT64_C(0x7ffffffffffff));
+  uint64_t x27 = (x25 + x13);
+  out1[0] = x23;
+  out1[1] = x26;
+  out1[2] = x27;
+  out1[3] = x16;
+  out1[4] = x19;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = (arg1[0]);
+  uint64_t x2 = ((x1 >> 51) + (arg1[1]));
+  uint64_t x3 = ((x2 >> 51) + (arg1[2]));
+  uint64_t x4 = ((x3 >> 51) + (arg1[3]));
+  uint64_t x5 = ((x4 >> 51) + (arg1[4]));
+  uint64_t x6 = ((x1 & UINT64_C(0x7ffffffffffff)) + ((x5 >> 51) * (uint64_t)UINT8_C(0x13)));
+  uint64_t x7 = ((x6 >> 51) + (x2 & UINT64_C(0x7ffffffffffff)));
+  uint64_t x8 = (x6 & UINT64_C(0x7ffffffffffff));
+  uint64_t x9 = (x7 & UINT64_C(0x7ffffffffffff));
+  uint64_t x10 = ((x7 >> 51) + (x3 & UINT64_C(0x7ffffffffffff)));
+  uint64_t x11 = (x4 & UINT64_C(0x7ffffffffffff));
+  uint64_t x12 = (x5 & UINT64_C(0x7ffffffffffff));
+  out1[0] = x8;
+  out1[1] = x9;
+  out1[2] = x10;
+  out1[3] = x11;
+  out1[4] = x12;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ *   arg2: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_add(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  uint64_t x1 = ((arg1[0]) + (arg2[0]));
+  uint64_t x2 = ((arg1[1]) + (arg2[1]));
+  uint64_t x3 = ((arg1[2]) + (arg2[2]));
+  uint64_t x4 = ((arg1[3]) + (arg2[3]));
+  uint64_t x5 = ((arg1[4]) + (arg2[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ *   arg2: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_sub(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  uint64_t x1 = ((UINT64_C(0xfffffffffffda) + (arg1[0])) - (arg2[0]));
+  uint64_t x2 = ((UINT64_C(0xffffffffffffe) + (arg1[1])) - (arg2[1]));
+  uint64_t x3 = ((UINT64_C(0xffffffffffffe) + (arg1[2])) - (arg2[2]));
+  uint64_t x4 = ((UINT64_C(0xffffffffffffe) + (arg1[3])) - (arg2[3]));
+  uint64_t x5 = ((UINT64_C(0xffffffffffffe) + (arg1[4])) - (arg2[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_opp(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = (UINT64_C(0xfffffffffffda) - (arg1[0]));
+  uint64_t x2 = (UINT64_C(0xffffffffffffe) - (arg1[1]));
+  uint64_t x3 = (UINT64_C(0xffffffffffffe) - (arg1[2]));
+  uint64_t x4 = (UINT64_C(0xffffffffffffe) - (arg1[3]));
+  uint64_t x5 = (UINT64_C(0xffffffffffffe) - (arg1[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_25519_selectznz(uint64_t out1[5], fiat_25519_uint1 arg1, const uint64_t arg2[5], const uint64_t arg3[5]) {
+  uint64_t x1;
+  fiat_25519_cmovznz_u64(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint64_t x2;
+  fiat_25519_cmovznz_u64(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint64_t x3;
+  fiat_25519_cmovznz_u64(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint64_t x4;
+  fiat_25519_cmovznz_u64(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint64_t x5;
+  fiat_25519_cmovznz_u64(&x5, arg1, (arg2[4]), (arg3[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ */
+static void fiat_25519_to_bytes(uint8_t out1[32], const uint64_t arg1[5]) {
+  uint64_t x1;
+  fiat_25519_uint1 x2;
+  fiat_25519_subborrowx_u51(&x1, &x2, 0x0, (arg1[0]), UINT64_C(0x7ffffffffffed));
+  uint64_t x3;
+  fiat_25519_uint1 x4;
+  fiat_25519_subborrowx_u51(&x3, &x4, x2, (arg1[1]), UINT64_C(0x7ffffffffffff));
+  uint64_t x5;
+  fiat_25519_uint1 x6;
+  fiat_25519_subborrowx_u51(&x5, &x6, x4, (arg1[2]), UINT64_C(0x7ffffffffffff));
+  uint64_t x7;
+  fiat_25519_uint1 x8;
+  fiat_25519_subborrowx_u51(&x7, &x8, x6, (arg1[3]), UINT64_C(0x7ffffffffffff));
+  uint64_t x9;
+  fiat_25519_uint1 x10;
+  fiat_25519_subborrowx_u51(&x9, &x10, x8, (arg1[4]), UINT64_C(0x7ffffffffffff));
+  uint64_t x11;
+  fiat_25519_cmovznz_u64(&x11, x10, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x12;
+  fiat_25519_uint1 x13;
+  fiat_25519_addcarryx_u51(&x12, &x13, 0x0, (x11 & UINT64_C(0x7ffffffffffed)), x1);
+  uint64_t x14;
+  fiat_25519_uint1 x15;
+  fiat_25519_addcarryx_u51(&x14, &x15, x13, (x11 & UINT64_C(0x7ffffffffffff)), x3);
+  uint64_t x16;
+  fiat_25519_uint1 x17;
+  fiat_25519_addcarryx_u51(&x16, &x17, x15, (x11 & UINT64_C(0x7ffffffffffff)), x5);
+  uint64_t x18;
+  fiat_25519_uint1 x19;
+  fiat_25519_addcarryx_u51(&x18, &x19, x17, (x11 & UINT64_C(0x7ffffffffffff)), x7);
+  uint64_t x20;
+  fiat_25519_uint1 x21;
+  fiat_25519_addcarryx_u51(&x20, &x21, x19, (x11 & UINT64_C(0x7ffffffffffff)), x9);
+  uint64_t x22 = (x20 << 4);
+  uint64_t x23 = (x18 * (uint64_t)0x2);
+  uint64_t x24 = (x16 << 6);
+  uint64_t x25 = (x14 << 3);
+  uint64_t x26 = (x12 >> 8);
+  uint8_t x27 = (uint8_t)(x12 & UINT8_C(0xff));
+  uint64_t x28 = (x26 >> 8);
+  uint8_t x29 = (uint8_t)(x26 & UINT8_C(0xff));
+  uint64_t x30 = (x28 >> 8);
+  uint8_t x31 = (uint8_t)(x28 & UINT8_C(0xff));
+  uint64_t x32 = (x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint64_t x34 = (x32 >> 8);
+  uint8_t x35 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint8_t x36 = (uint8_t)(x34 >> 8);
+  uint8_t x37 = (uint8_t)(x34 & UINT8_C(0xff));
+  uint64_t x38 = (x36 + x25);
+  uint64_t x39 = (x38 >> 8);
+  uint8_t x40 = (uint8_t)(x38 & UINT8_C(0xff));
+  uint64_t x41 = (x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint64_t x43 = (x41 >> 8);
+  uint8_t x44 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint64_t x45 = (x43 >> 8);
+  uint8_t x46 = (uint8_t)(x43 & UINT8_C(0xff));
+  uint64_t x47 = (x45 >> 8);
+  uint8_t x48 = (uint8_t)(x45 & UINT8_C(0xff));
+  uint8_t x49 = (uint8_t)(x47 >> 8);
+  uint8_t x50 = (uint8_t)(x47 & UINT8_C(0xff));
+  uint64_t x51 = (x49 + x24);
+  uint64_t x52 = (x51 >> 8);
+  uint8_t x53 = (uint8_t)(x51 & UINT8_C(0xff));
+  uint64_t x54 = (x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint64_t x56 = (x54 >> 8);
+  uint8_t x57 = (uint8_t)(x54 & UINT8_C(0xff));
+  uint64_t x58 = (x56 >> 8);
+  uint8_t x59 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint64_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint64_t x62 = (x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  fiat_25519_uint1 x64 = (fiat_25519_uint1)(x62 >> 8);
+  uint8_t x65 = (uint8_t)(x62 & UINT8_C(0xff));
+  uint64_t x66 = (x64 + x23);
+  uint64_t x67 = (x66 >> 8);
+  uint8_t x68 = (uint8_t)(x66 & UINT8_C(0xff));
+  uint64_t x69 = (x67 >> 8);
+  uint8_t x70 = (uint8_t)(x67 & UINT8_C(0xff));
+  uint64_t x71 = (x69 >> 8);
+  uint8_t x72 = (uint8_t)(x69 & UINT8_C(0xff));
+  uint64_t x73 = (x71 >> 8);
+  uint8_t x74 = (uint8_t)(x71 & UINT8_C(0xff));
+  uint64_t x75 = (x73 >> 8);
+  uint8_t x76 = (uint8_t)(x73 & UINT8_C(0xff));
+  uint8_t x77 = (uint8_t)(x75 >> 8);
+  uint8_t x78 = (uint8_t)(x75 & UINT8_C(0xff));
+  uint64_t x79 = (x77 + x22);
+  uint64_t x80 = (x79 >> 8);
+  uint8_t x81 = (uint8_t)(x79 & UINT8_C(0xff));
+  uint64_t x82 = (x80 >> 8);
+  uint8_t x83 = (uint8_t)(x80 & UINT8_C(0xff));
+  uint64_t x84 = (x82 >> 8);
+  uint8_t x85 = (uint8_t)(x82 & UINT8_C(0xff));
+  uint64_t x86 = (x84 >> 8);
+  uint8_t x87 = (uint8_t)(x84 & UINT8_C(0xff));
+  uint64_t x88 = (x86 >> 8);
+  uint8_t x89 = (uint8_t)(x86 & UINT8_C(0xff));
+  uint8_t x90 = (uint8_t)(x88 >> 8);
+  uint8_t x91 = (uint8_t)(x88 & UINT8_C(0xff));
+  out1[0] = x27;
+  out1[1] = x29;
+  out1[2] = x31;
+  out1[3] = x33;
+  out1[4] = x35;
+  out1[5] = x37;
+  out1[6] = x40;
+  out1[7] = x42;
+  out1[8] = x44;
+  out1[9] = x46;
+  out1[10] = x48;
+  out1[11] = x50;
+  out1[12] = x53;
+  out1[13] = x55;
+  out1[14] = x57;
+  out1[15] = x59;
+  out1[16] = x61;
+  out1[17] = x63;
+  out1[18] = x65;
+  out1[19] = x68;
+  out1[20] = x70;
+  out1[21] = x72;
+  out1[22] = x74;
+  out1[23] = x76;
+  out1[24] = x78;
+  out1[25] = x81;
+  out1[26] = x83;
+  out1[27] = x85;
+  out1[28] = x87;
+  out1[29] = x89;
+  out1[30] = x91;
+  out1[31] = x90;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_from_bytes(uint64_t out1[5], const uint8_t arg1[32]) {
+  uint64_t x1 = ((uint64_t)(arg1[31]) << 44);
+  uint64_t x2 = ((uint64_t)(arg1[30]) << 36);
+  uint64_t x3 = ((uint64_t)(arg1[29]) << 28);
+  uint64_t x4 = ((uint64_t)(arg1[28]) << 20);
+  uint64_t x5 = ((uint64_t)(arg1[27]) << 12);
+  uint64_t x6 = ((uint64_t)(arg1[26]) << 4);
+  uint64_t x7 = ((uint64_t)(arg1[25]) << 47);
+  uint64_t x8 = ((uint64_t)(arg1[24]) << 39);
+  uint64_t x9 = ((uint64_t)(arg1[23]) << 31);
+  uint64_t x10 = ((uint64_t)(arg1[22]) << 23);
+  uint64_t x11 = ((uint64_t)(arg1[21]) << 15);
+  uint64_t x12 = ((uint64_t)(arg1[20]) << 7);
+  uint64_t x13 = ((uint64_t)(arg1[19]) << 50);
+  uint64_t x14 = ((uint64_t)(arg1[18]) << 42);
+  uint64_t x15 = ((uint64_t)(arg1[17]) << 34);
+  uint64_t x16 = ((uint64_t)(arg1[16]) << 26);
+  uint64_t x17 = ((uint64_t)(arg1[15]) << 18);
+  uint64_t x18 = ((uint64_t)(arg1[14]) << 10);
+  uint64_t x19 = ((uint64_t)(arg1[13]) << 2);
+  uint64_t x20 = ((uint64_t)(arg1[12]) << 45);
+  uint64_t x21 = ((uint64_t)(arg1[11]) << 37);
+  uint64_t x22 = ((uint64_t)(arg1[10]) << 29);
+  uint64_t x23 = ((uint64_t)(arg1[9]) << 21);
+  uint64_t x24 = ((uint64_t)(arg1[8]) << 13);
+  uint64_t x25 = ((uint64_t)(arg1[7]) << 5);
+  uint64_t x26 = ((uint64_t)(arg1[6]) << 48);
+  uint64_t x27 = ((uint64_t)(arg1[5]) << 40);
+  uint64_t x28 = ((uint64_t)(arg1[4]) << 32);
+  uint64_t x29 = ((uint64_t)(arg1[3]) << 24);
+  uint64_t x30 = ((uint64_t)(arg1[2]) << 16);
+  uint64_t x31 = ((uint64_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint64_t x33 = (x32 + (x31 + (x30 + (x29 + (x28 + (x27 + x26))))));
+  uint8_t x34 = (uint8_t)(x33 >> 51);
+  uint64_t x35 = (x33 & UINT64_C(0x7ffffffffffff));
+  uint64_t x36 = (x6 + (x5 + (x4 + (x3 + (x2 + x1)))));
+  uint64_t x37 = (x12 + (x11 + (x10 + (x9 + (x8 + x7)))));
+  uint64_t x38 = (x19 + (x18 + (x17 + (x16 + (x15 + (x14 + x13))))));
+  uint64_t x39 = (x25 + (x24 + (x23 + (x22 + (x21 + x20)))));
+  uint64_t x40 = (x34 + x39);
+  uint8_t x41 = (uint8_t)(x40 >> 51);
+  uint64_t x42 = (x40 & UINT64_C(0x7ffffffffffff));
+  uint64_t x43 = (x41 + x38);
+  uint8_t x44 = (uint8_t)(x43 >> 51);
+  uint64_t x45 = (x43 & UINT64_C(0x7ffffffffffff));
+  uint64_t x46 = (x44 + x37);
+  uint8_t x47 = (uint8_t)(x46 >> 51);
+  uint64_t x48 = (x46 & UINT64_C(0x7ffffffffffff));
+  uint64_t x49 = (x47 + x36);
+  out1[0] = x35;
+  out1[1] = x42;
+  out1[2] = x45;
+  out1[3] = x48;
+  out1[4] = x49;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h.grpc_back
new file mode 100644
index 0000000..7c31ff9
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_64.h.grpc_back	
@@ -0,0 +1,559 @@
+/* Autogenerated */
+/* curve description: 25519 */
+/* requested operations: carry_mul, carry_square, carry_scmul121666, carry, add, sub, opp, selectznz, to_bytes, from_bytes */
+/* n = 5 (from "5") */
+/* s = 0x8000000000000000000000000000000000000000000000000000000000000000 (from "2^255") */
+/* c = [(1, 19)] (from "1,19") */
+/* machine_wordsize = 64 (from "64") */
+
+#include <stdint.h>
+typedef unsigned char fiat_25519_uint1;
+typedef signed char fiat_25519_int1;
+typedef signed __int128 fiat_25519_int128;
+typedef unsigned __int128 fiat_25519_uint128;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x7ffffffffffff]
+ *   arg3: [0x0 ~> 0x7ffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x7ffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_addcarryx_u51(uint64_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  uint64_t x1 = ((arg1 + arg2) + arg3);
+  uint64_t x2 = (x1 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint1 x3 = (fiat_25519_uint1)(x1 >> 51);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0x7ffffffffffff]
+ *   arg3: [0x0 ~> 0x7ffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0x7ffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_25519_subborrowx_u51(uint64_t* out1, fiat_25519_uint1* out2, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  int64_t x1 = ((int64_t)(arg2 - (int64_t)arg1) - (int64_t)arg3);
+  fiat_25519_int1 x2 = (fiat_25519_int1)(x1 >> 51);
+  uint64_t x3 = (x1 & UINT64_C(0x7ffffffffffff));
+  *out1 = x3;
+  *out2 = (fiat_25519_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_25519_cmovznz_u64(uint64_t* out1, fiat_25519_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_25519_uint1 x1 = (!(!arg1));
+  uint64_t x2 = ((fiat_25519_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint64_t x3 = ((value_barrier_u64(x2) & arg3) | (value_barrier_u64(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ *   arg2: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_mul(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  fiat_25519_uint128 x1 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x2 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x3 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[2]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x4 = ((fiat_25519_uint128)(arg1[4]) * ((arg2[1]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x5 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x6 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x7 = ((fiat_25519_uint128)(arg1[3]) * ((arg2[2]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x8 = ((fiat_25519_uint128)(arg1[2]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x9 = ((fiat_25519_uint128)(arg1[2]) * ((arg2[3]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x10 = ((fiat_25519_uint128)(arg1[1]) * ((arg2[4]) * (uint64_t)UINT8_C(0x13)));
+  fiat_25519_uint128 x11 = ((fiat_25519_uint128)(arg1[4]) * (arg2[0]));
+  fiat_25519_uint128 x12 = ((fiat_25519_uint128)(arg1[3]) * (arg2[1]));
+  fiat_25519_uint128 x13 = ((fiat_25519_uint128)(arg1[3]) * (arg2[0]));
+  fiat_25519_uint128 x14 = ((fiat_25519_uint128)(arg1[2]) * (arg2[2]));
+  fiat_25519_uint128 x15 = ((fiat_25519_uint128)(arg1[2]) * (arg2[1]));
+  fiat_25519_uint128 x16 = ((fiat_25519_uint128)(arg1[2]) * (arg2[0]));
+  fiat_25519_uint128 x17 = ((fiat_25519_uint128)(arg1[1]) * (arg2[3]));
+  fiat_25519_uint128 x18 = ((fiat_25519_uint128)(arg1[1]) * (arg2[2]));
+  fiat_25519_uint128 x19 = ((fiat_25519_uint128)(arg1[1]) * (arg2[1]));
+  fiat_25519_uint128 x20 = ((fiat_25519_uint128)(arg1[1]) * (arg2[0]));
+  fiat_25519_uint128 x21 = ((fiat_25519_uint128)(arg1[0]) * (arg2[4]));
+  fiat_25519_uint128 x22 = ((fiat_25519_uint128)(arg1[0]) * (arg2[3]));
+  fiat_25519_uint128 x23 = ((fiat_25519_uint128)(arg1[0]) * (arg2[2]));
+  fiat_25519_uint128 x24 = ((fiat_25519_uint128)(arg1[0]) * (arg2[1]));
+  fiat_25519_uint128 x25 = ((fiat_25519_uint128)(arg1[0]) * (arg2[0]));
+  fiat_25519_uint128 x26 = (x25 + (x10 + (x9 + (x7 + x4))));
+  uint64_t x27 = (uint64_t)(x26 >> 51);
+  uint64_t x28 = (uint64_t)(x26 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x29 = (x21 + (x17 + (x14 + (x12 + x11))));
+  fiat_25519_uint128 x30 = (x22 + (x18 + (x15 + (x13 + x1))));
+  fiat_25519_uint128 x31 = (x23 + (x19 + (x16 + (x5 + x2))));
+  fiat_25519_uint128 x32 = (x24 + (x20 + (x8 + (x6 + x3))));
+  fiat_25519_uint128 x33 = (x27 + x32);
+  uint64_t x34 = (uint64_t)(x33 >> 51);
+  uint64_t x35 = (uint64_t)(x33 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x36 = (x34 + x31);
+  uint64_t x37 = (uint64_t)(x36 >> 51);
+  uint64_t x38 = (uint64_t)(x36 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x39 = (x37 + x30);
+  uint64_t x40 = (uint64_t)(x39 >> 51);
+  uint64_t x41 = (uint64_t)(x39 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x42 = (x40 + x29);
+  uint64_t x43 = (uint64_t)(x42 >> 51);
+  uint64_t x44 = (uint64_t)(x42 & UINT64_C(0x7ffffffffffff));
+  uint64_t x45 = (x43 * (uint64_t)UINT8_C(0x13));
+  uint64_t x46 = (x28 + x45);
+  uint64_t x47 = (x46 >> 51);
+  uint64_t x48 = (x46 & UINT64_C(0x7ffffffffffff));
+  uint64_t x49 = (x47 + x35);
+  uint64_t x50 = (x49 >> 51);
+  uint64_t x51 = (x49 & UINT64_C(0x7ffffffffffff));
+  uint64_t x52 = (x50 + x38);
+  out1[0] = x48;
+  out1[1] = x51;
+  out1[2] = x52;
+  out1[3] = x41;
+  out1[4] = x44;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_square(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = ((arg1[4]) * (uint64_t)UINT8_C(0x13));
+  uint64_t x2 = (x1 * (uint64_t)0x2);
+  uint64_t x3 = ((arg1[4]) * (uint64_t)0x2);
+  uint64_t x4 = ((arg1[3]) * (uint64_t)UINT8_C(0x13));
+  uint64_t x5 = (x4 * (uint64_t)0x2);
+  uint64_t x6 = ((arg1[3]) * (uint64_t)0x2);
+  uint64_t x7 = ((arg1[2]) * (uint64_t)0x2);
+  uint64_t x8 = ((arg1[1]) * (uint64_t)0x2);
+  fiat_25519_uint128 x9 = ((fiat_25519_uint128)(arg1[4]) * x1);
+  fiat_25519_uint128 x10 = ((fiat_25519_uint128)(arg1[3]) * x2);
+  fiat_25519_uint128 x11 = ((fiat_25519_uint128)(arg1[3]) * x4);
+  fiat_25519_uint128 x12 = ((fiat_25519_uint128)(arg1[2]) * x2);
+  fiat_25519_uint128 x13 = ((fiat_25519_uint128)(arg1[2]) * x5);
+  fiat_25519_uint128 x14 = ((fiat_25519_uint128)(arg1[2]) * (arg1[2]));
+  fiat_25519_uint128 x15 = ((fiat_25519_uint128)(arg1[1]) * x2);
+  fiat_25519_uint128 x16 = ((fiat_25519_uint128)(arg1[1]) * x6);
+  fiat_25519_uint128 x17 = ((fiat_25519_uint128)(arg1[1]) * x7);
+  fiat_25519_uint128 x18 = ((fiat_25519_uint128)(arg1[1]) * (arg1[1]));
+  fiat_25519_uint128 x19 = ((fiat_25519_uint128)(arg1[0]) * x3);
+  fiat_25519_uint128 x20 = ((fiat_25519_uint128)(arg1[0]) * x6);
+  fiat_25519_uint128 x21 = ((fiat_25519_uint128)(arg1[0]) * x7);
+  fiat_25519_uint128 x22 = ((fiat_25519_uint128)(arg1[0]) * x8);
+  fiat_25519_uint128 x23 = ((fiat_25519_uint128)(arg1[0]) * (arg1[0]));
+  fiat_25519_uint128 x24 = (x23 + (x15 + x13));
+  uint64_t x25 = (uint64_t)(x24 >> 51);
+  uint64_t x26 = (uint64_t)(x24 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x27 = (x19 + (x16 + x14));
+  fiat_25519_uint128 x28 = (x20 + (x17 + x9));
+  fiat_25519_uint128 x29 = (x21 + (x18 + x10));
+  fiat_25519_uint128 x30 = (x22 + (x12 + x11));
+  fiat_25519_uint128 x31 = (x25 + x30);
+  uint64_t x32 = (uint64_t)(x31 >> 51);
+  uint64_t x33 = (uint64_t)(x31 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x34 = (x32 + x29);
+  uint64_t x35 = (uint64_t)(x34 >> 51);
+  uint64_t x36 = (uint64_t)(x34 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x37 = (x35 + x28);
+  uint64_t x38 = (uint64_t)(x37 >> 51);
+  uint64_t x39 = (uint64_t)(x37 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x40 = (x38 + x27);
+  uint64_t x41 = (uint64_t)(x40 >> 51);
+  uint64_t x42 = (uint64_t)(x40 & UINT64_C(0x7ffffffffffff));
+  uint64_t x43 = (x41 * (uint64_t)UINT8_C(0x13));
+  uint64_t x44 = (x26 + x43);
+  uint64_t x45 = (x44 >> 51);
+  uint64_t x46 = (x44 & UINT64_C(0x7ffffffffffff));
+  uint64_t x47 = (x45 + x33);
+  uint64_t x48 = (x47 >> 51);
+  uint64_t x49 = (x47 & UINT64_C(0x7ffffffffffff));
+  uint64_t x50 = (x48 + x36);
+  out1[0] = x46;
+  out1[1] = x49;
+  out1[2] = x50;
+  out1[3] = x39;
+  out1[4] = x42;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry_scmul_121666(uint64_t out1[5], const uint64_t arg1[5]) {
+  fiat_25519_uint128 x1 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[4]));
+  fiat_25519_uint128 x2 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[3]));
+  fiat_25519_uint128 x3 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[2]));
+  fiat_25519_uint128 x4 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[1]));
+  fiat_25519_uint128 x5 = (UINT32_C(0x1db42) * (fiat_25519_uint128)(arg1[0]));
+  uint64_t x6 = (uint64_t)(x5 >> 51);
+  uint64_t x7 = (uint64_t)(x5 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x8 = (x6 + x4);
+  uint64_t x9 = (uint64_t)(x8 >> 51);
+  uint64_t x10 = (uint64_t)(x8 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x11 = (x9 + x3);
+  uint64_t x12 = (uint64_t)(x11 >> 51);
+  uint64_t x13 = (uint64_t)(x11 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x14 = (x12 + x2);
+  uint64_t x15 = (uint64_t)(x14 >> 51);
+  uint64_t x16 = (uint64_t)(x14 & UINT64_C(0x7ffffffffffff));
+  fiat_25519_uint128 x17 = (x15 + x1);
+  uint64_t x18 = (uint64_t)(x17 >> 51);
+  uint64_t x19 = (uint64_t)(x17 & UINT64_C(0x7ffffffffffff));
+  uint64_t x20 = (x18 * (uint64_t)UINT8_C(0x13));
+  uint64_t x21 = (x7 + x20);
+  uint64_t x22 = (x21 >> 51);
+  uint64_t x23 = (x21 & UINT64_C(0x7ffffffffffff));
+  uint64_t x24 = (x22 + x10);
+  uint64_t x25 = (x24 >> 51);
+  uint64_t x26 = (x24 & UINT64_C(0x7ffffffffffff));
+  uint64_t x27 = (x25 + x13);
+  out1[0] = x23;
+  out1[1] = x26;
+  out1[2] = x27;
+  out1[3] = x16;
+  out1[4] = x19;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_carry(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = (arg1[0]);
+  uint64_t x2 = ((x1 >> 51) + (arg1[1]));
+  uint64_t x3 = ((x2 >> 51) + (arg1[2]));
+  uint64_t x4 = ((x3 >> 51) + (arg1[3]));
+  uint64_t x5 = ((x4 >> 51) + (arg1[4]));
+  uint64_t x6 = ((x1 & UINT64_C(0x7ffffffffffff)) + ((x5 >> 51) * (uint64_t)UINT8_C(0x13)));
+  uint64_t x7 = ((x6 >> 51) + (x2 & UINT64_C(0x7ffffffffffff)));
+  uint64_t x8 = (x6 & UINT64_C(0x7ffffffffffff));
+  uint64_t x9 = (x7 & UINT64_C(0x7ffffffffffff));
+  uint64_t x10 = ((x7 >> 51) + (x3 & UINT64_C(0x7ffffffffffff)));
+  uint64_t x11 = (x4 & UINT64_C(0x7ffffffffffff));
+  uint64_t x12 = (x5 & UINT64_C(0x7ffffffffffff));
+  out1[0] = x8;
+  out1[1] = x9;
+  out1[2] = x10;
+  out1[3] = x11;
+  out1[4] = x12;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ *   arg2: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_add(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  uint64_t x1 = ((arg1[0]) + (arg2[0]));
+  uint64_t x2 = ((arg1[1]) + (arg2[1]));
+  uint64_t x3 = ((arg1[2]) + (arg2[2]));
+  uint64_t x4 = ((arg1[3]) + (arg2[3]));
+  uint64_t x5 = ((arg1[4]) + (arg2[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ *   arg2: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_sub(uint64_t out1[5], const uint64_t arg1[5], const uint64_t arg2[5]) {
+  uint64_t x1 = ((UINT64_C(0xfffffffffffda) + (arg1[0])) - (arg2[0]));
+  uint64_t x2 = ((UINT64_C(0xffffffffffffe) + (arg1[1])) - (arg2[1]));
+  uint64_t x3 = ((UINT64_C(0xffffffffffffe) + (arg1[2])) - (arg2[2]));
+  uint64_t x4 = ((UINT64_C(0xffffffffffffe) + (arg1[3])) - (arg2[3]));
+  uint64_t x5 = ((UINT64_C(0xffffffffffffe) + (arg1[4])) - (arg2[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664], [0x0 ~> 0x1a666666666664]]
+ */
+static void fiat_25519_opp(uint64_t out1[5], const uint64_t arg1[5]) {
+  uint64_t x1 = (UINT64_C(0xfffffffffffda) - (arg1[0]));
+  uint64_t x2 = (UINT64_C(0xffffffffffffe) - (arg1[1]));
+  uint64_t x3 = (UINT64_C(0xffffffffffffe) - (arg1[2]));
+  uint64_t x4 = (UINT64_C(0xffffffffffffe) - (arg1[3]));
+  uint64_t x5 = (UINT64_C(0xffffffffffffe) - (arg1[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_25519_selectznz(uint64_t out1[5], fiat_25519_uint1 arg1, const uint64_t arg2[5], const uint64_t arg3[5]) {
+  uint64_t x1;
+  fiat_25519_cmovznz_u64(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint64_t x2;
+  fiat_25519_cmovznz_u64(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint64_t x3;
+  fiat_25519_cmovznz_u64(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint64_t x4;
+  fiat_25519_cmovznz_u64(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint64_t x5;
+  fiat_25519_cmovznz_u64(&x5, arg1, (arg2[4]), (arg3[4]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ */
+static void fiat_25519_to_bytes(uint8_t out1[32], const uint64_t arg1[5]) {
+  uint64_t x1;
+  fiat_25519_uint1 x2;
+  fiat_25519_subborrowx_u51(&x1, &x2, 0x0, (arg1[0]), UINT64_C(0x7ffffffffffed));
+  uint64_t x3;
+  fiat_25519_uint1 x4;
+  fiat_25519_subborrowx_u51(&x3, &x4, x2, (arg1[1]), UINT64_C(0x7ffffffffffff));
+  uint64_t x5;
+  fiat_25519_uint1 x6;
+  fiat_25519_subborrowx_u51(&x5, &x6, x4, (arg1[2]), UINT64_C(0x7ffffffffffff));
+  uint64_t x7;
+  fiat_25519_uint1 x8;
+  fiat_25519_subborrowx_u51(&x7, &x8, x6, (arg1[3]), UINT64_C(0x7ffffffffffff));
+  uint64_t x9;
+  fiat_25519_uint1 x10;
+  fiat_25519_subborrowx_u51(&x9, &x10, x8, (arg1[4]), UINT64_C(0x7ffffffffffff));
+  uint64_t x11;
+  fiat_25519_cmovznz_u64(&x11, x10, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x12;
+  fiat_25519_uint1 x13;
+  fiat_25519_addcarryx_u51(&x12, &x13, 0x0, (x11 & UINT64_C(0x7ffffffffffed)), x1);
+  uint64_t x14;
+  fiat_25519_uint1 x15;
+  fiat_25519_addcarryx_u51(&x14, &x15, x13, (x11 & UINT64_C(0x7ffffffffffff)), x3);
+  uint64_t x16;
+  fiat_25519_uint1 x17;
+  fiat_25519_addcarryx_u51(&x16, &x17, x15, (x11 & UINT64_C(0x7ffffffffffff)), x5);
+  uint64_t x18;
+  fiat_25519_uint1 x19;
+  fiat_25519_addcarryx_u51(&x18, &x19, x17, (x11 & UINT64_C(0x7ffffffffffff)), x7);
+  uint64_t x20;
+  fiat_25519_uint1 x21;
+  fiat_25519_addcarryx_u51(&x20, &x21, x19, (x11 & UINT64_C(0x7ffffffffffff)), x9);
+  uint64_t x22 = (x20 << 4);
+  uint64_t x23 = (x18 * (uint64_t)0x2);
+  uint64_t x24 = (x16 << 6);
+  uint64_t x25 = (x14 << 3);
+  uint64_t x26 = (x12 >> 8);
+  uint8_t x27 = (uint8_t)(x12 & UINT8_C(0xff));
+  uint64_t x28 = (x26 >> 8);
+  uint8_t x29 = (uint8_t)(x26 & UINT8_C(0xff));
+  uint64_t x30 = (x28 >> 8);
+  uint8_t x31 = (uint8_t)(x28 & UINT8_C(0xff));
+  uint64_t x32 = (x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint64_t x34 = (x32 >> 8);
+  uint8_t x35 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint8_t x36 = (uint8_t)(x34 >> 8);
+  uint8_t x37 = (uint8_t)(x34 & UINT8_C(0xff));
+  uint64_t x38 = (x36 + x25);
+  uint64_t x39 = (x38 >> 8);
+  uint8_t x40 = (uint8_t)(x38 & UINT8_C(0xff));
+  uint64_t x41 = (x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint64_t x43 = (x41 >> 8);
+  uint8_t x44 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint64_t x45 = (x43 >> 8);
+  uint8_t x46 = (uint8_t)(x43 & UINT8_C(0xff));
+  uint64_t x47 = (x45 >> 8);
+  uint8_t x48 = (uint8_t)(x45 & UINT8_C(0xff));
+  uint8_t x49 = (uint8_t)(x47 >> 8);
+  uint8_t x50 = (uint8_t)(x47 & UINT8_C(0xff));
+  uint64_t x51 = (x49 + x24);
+  uint64_t x52 = (x51 >> 8);
+  uint8_t x53 = (uint8_t)(x51 & UINT8_C(0xff));
+  uint64_t x54 = (x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint64_t x56 = (x54 >> 8);
+  uint8_t x57 = (uint8_t)(x54 & UINT8_C(0xff));
+  uint64_t x58 = (x56 >> 8);
+  uint8_t x59 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint64_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint64_t x62 = (x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  fiat_25519_uint1 x64 = (fiat_25519_uint1)(x62 >> 8);
+  uint8_t x65 = (uint8_t)(x62 & UINT8_C(0xff));
+  uint64_t x66 = (x64 + x23);
+  uint64_t x67 = (x66 >> 8);
+  uint8_t x68 = (uint8_t)(x66 & UINT8_C(0xff));
+  uint64_t x69 = (x67 >> 8);
+  uint8_t x70 = (uint8_t)(x67 & UINT8_C(0xff));
+  uint64_t x71 = (x69 >> 8);
+  uint8_t x72 = (uint8_t)(x69 & UINT8_C(0xff));
+  uint64_t x73 = (x71 >> 8);
+  uint8_t x74 = (uint8_t)(x71 & UINT8_C(0xff));
+  uint64_t x75 = (x73 >> 8);
+  uint8_t x76 = (uint8_t)(x73 & UINT8_C(0xff));
+  uint8_t x77 = (uint8_t)(x75 >> 8);
+  uint8_t x78 = (uint8_t)(x75 & UINT8_C(0xff));
+  uint64_t x79 = (x77 + x22);
+  uint64_t x80 = (x79 >> 8);
+  uint8_t x81 = (uint8_t)(x79 & UINT8_C(0xff));
+  uint64_t x82 = (x80 >> 8);
+  uint8_t x83 = (uint8_t)(x80 & UINT8_C(0xff));
+  uint64_t x84 = (x82 >> 8);
+  uint8_t x85 = (uint8_t)(x82 & UINT8_C(0xff));
+  uint64_t x86 = (x84 >> 8);
+  uint8_t x87 = (uint8_t)(x84 & UINT8_C(0xff));
+  uint64_t x88 = (x86 >> 8);
+  uint8_t x89 = (uint8_t)(x86 & UINT8_C(0xff));
+  uint8_t x90 = (uint8_t)(x88 >> 8);
+  uint8_t x91 = (uint8_t)(x88 & UINT8_C(0xff));
+  out1[0] = x27;
+  out1[1] = x29;
+  out1[2] = x31;
+  out1[3] = x33;
+  out1[4] = x35;
+  out1[5] = x37;
+  out1[6] = x40;
+  out1[7] = x42;
+  out1[8] = x44;
+  out1[9] = x46;
+  out1[10] = x48;
+  out1[11] = x50;
+  out1[12] = x53;
+  out1[13] = x55;
+  out1[14] = x57;
+  out1[15] = x59;
+  out1[16] = x61;
+  out1[17] = x63;
+  out1[18] = x65;
+  out1[19] = x68;
+  out1[20] = x70;
+  out1[21] = x72;
+  out1[22] = x74;
+  out1[23] = x76;
+  out1[24] = x78;
+  out1[25] = x81;
+  out1[26] = x83;
+  out1[27] = x85;
+  out1[28] = x87;
+  out1[29] = x89;
+  out1[30] = x91;
+  out1[31] = x90;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0x7f]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc], [0x0 ~> 0x8cccccccccccc]]
+ */
+static void fiat_25519_from_bytes(uint64_t out1[5], const uint8_t arg1[32]) {
+  uint64_t x1 = ((uint64_t)(arg1[31]) << 44);
+  uint64_t x2 = ((uint64_t)(arg1[30]) << 36);
+  uint64_t x3 = ((uint64_t)(arg1[29]) << 28);
+  uint64_t x4 = ((uint64_t)(arg1[28]) << 20);
+  uint64_t x5 = ((uint64_t)(arg1[27]) << 12);
+  uint64_t x6 = ((uint64_t)(arg1[26]) << 4);
+  uint64_t x7 = ((uint64_t)(arg1[25]) << 47);
+  uint64_t x8 = ((uint64_t)(arg1[24]) << 39);
+  uint64_t x9 = ((uint64_t)(arg1[23]) << 31);
+  uint64_t x10 = ((uint64_t)(arg1[22]) << 23);
+  uint64_t x11 = ((uint64_t)(arg1[21]) << 15);
+  uint64_t x12 = ((uint64_t)(arg1[20]) << 7);
+  uint64_t x13 = ((uint64_t)(arg1[19]) << 50);
+  uint64_t x14 = ((uint64_t)(arg1[18]) << 42);
+  uint64_t x15 = ((uint64_t)(arg1[17]) << 34);
+  uint64_t x16 = ((uint64_t)(arg1[16]) << 26);
+  uint64_t x17 = ((uint64_t)(arg1[15]) << 18);
+  uint64_t x18 = ((uint64_t)(arg1[14]) << 10);
+  uint64_t x19 = ((uint64_t)(arg1[13]) << 2);
+  uint64_t x20 = ((uint64_t)(arg1[12]) << 45);
+  uint64_t x21 = ((uint64_t)(arg1[11]) << 37);
+  uint64_t x22 = ((uint64_t)(arg1[10]) << 29);
+  uint64_t x23 = ((uint64_t)(arg1[9]) << 21);
+  uint64_t x24 = ((uint64_t)(arg1[8]) << 13);
+  uint64_t x25 = ((uint64_t)(arg1[7]) << 5);
+  uint64_t x26 = ((uint64_t)(arg1[6]) << 48);
+  uint64_t x27 = ((uint64_t)(arg1[5]) << 40);
+  uint64_t x28 = ((uint64_t)(arg1[4]) << 32);
+  uint64_t x29 = ((uint64_t)(arg1[3]) << 24);
+  uint64_t x30 = ((uint64_t)(arg1[2]) << 16);
+  uint64_t x31 = ((uint64_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint64_t x33 = (x32 + (x31 + (x30 + (x29 + (x28 + (x27 + x26))))));
+  uint8_t x34 = (uint8_t)(x33 >> 51);
+  uint64_t x35 = (x33 & UINT64_C(0x7ffffffffffff));
+  uint64_t x36 = (x6 + (x5 + (x4 + (x3 + (x2 + x1)))));
+  uint64_t x37 = (x12 + (x11 + (x10 + (x9 + (x8 + x7)))));
+  uint64_t x38 = (x19 + (x18 + (x17 + (x16 + (x15 + (x14 + x13))))));
+  uint64_t x39 = (x25 + (x24 + (x23 + (x22 + (x21 + x20)))));
+  uint64_t x40 = (x34 + x39);
+  uint8_t x41 = (uint8_t)(x40 >> 51);
+  uint64_t x42 = (x40 & UINT64_C(0x7ffffffffffff));
+  uint64_t x43 = (x41 + x38);
+  uint8_t x44 = (uint8_t)(x43 >> 51);
+  uint64_t x45 = (x43 & UINT64_C(0x7ffffffffffff));
+  uint64_t x46 = (x44 + x37);
+  uint8_t x47 = (uint8_t)(x46 >> 51);
+  uint64_t x48 = (x46 & UINT64_C(0x7ffffffffffff));
+  uint64_t x49 = (x47 + x36);
+  out1[0] = x35;
+  out1[1] = x42;
+  out1[2] = x45;
+  out1[3] = x48;
+  out1[4] = x49;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h
new file mode 100644
index 0000000..c293e95
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h	
@@ -0,0 +1,7880 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// This file is generated from
+//    ./make_curve25519_tables.py > curve25519_tables.h
+
+
+static const fe d = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    929955233495203, 466365720129213, 1662059464998953, 2033849074728123,
+    1442794654840575
+#else
+    56195235, 13857412, 51736253, 6949390, 114729, 24766616, 60832955, 30306712,
+    48412415, 21499315
+#endif
+}};
+
+static const fe sqrtm1 = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    1718705420411056, 234908883556509, 2233514472574048, 2117202627021982,
+    765476049583133
+#else
+    34513072, 25610706, 9377949, 3500415, 12389472, 33281959, 41962654,
+    31548777, 326685, 11406482
+#endif
+}};
+
+static const fe d2 = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    1859910466990425, 932731440258426, 1072319116312658, 1815898335770999,
+    633789495995903
+#else
+    45281625, 27714825, 36363642, 13898781, 229458, 15978800, 54557047,
+    27058993, 29715967, 9444199
+#endif
+}};
+
+#if defined(OPENSSL_SMALL)
+
+// This block of code replaces the standard base-point table with a much smaller
+// one. The standard table is 30,720 bytes while this one is just 960.
+//
+// This table contains 15 pairs of group elements, (x, y), where each field
+// element is serialised with |fe_tobytes|. If |i| is the index of the group
+// element then consider i+1 as a four-bit number: (i₀, i₁, i₂, i₃) (where i₀
+// is the most significant bit). The value of the group element is then:
+// (i₀×2^192 + i₁×2^128 + i₂×2^64 + i₃)G, where G is the generator.
+static const uint8_t k25519SmallPrecomp[15 * 2 * 32] = {
+    0x1a, 0xd5, 0x25, 0x8f, 0x60, 0x2d, 0x56, 0xc9, 0xb2, 0xa7, 0x25, 0x95,
+    0x60, 0xc7, 0x2c, 0x69, 0x5c, 0xdc, 0xd6, 0xfd, 0x31, 0xe2, 0xa4, 0xc0,
+    0xfe, 0x53, 0x6e, 0xcd, 0xd3, 0x36, 0x69, 0x21, 0x58, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x02, 0xa2, 0xed, 0xf4, 0x8f, 0x6b, 0x0b, 0x3e,
+    0xeb, 0x35, 0x1a, 0xd5, 0x7e, 0xdb, 0x78, 0x00, 0x96, 0x8a, 0xa0, 0xb4,
+    0xcf, 0x60, 0x4b, 0xd4, 0xd5, 0xf9, 0x2d, 0xbf, 0x88, 0xbd, 0x22, 0x62,
+    0x13, 0x53, 0xe4, 0x82, 0x57, 0xfa, 0x1e, 0x8f, 0x06, 0x2b, 0x90, 0xba,
+    0x08, 0xb6, 0x10, 0x54, 0x4f, 0x7c, 0x1b, 0x26, 0xed, 0xda, 0x6b, 0xdd,
+    0x25, 0xd0, 0x4e, 0xea, 0x42, 0xbb, 0x25, 0x03, 0xa2, 0xfb, 0xcc, 0x61,
+    0x67, 0x06, 0x70, 0x1a, 0xc4, 0x78, 0x3a, 0xff, 0x32, 0x62, 0xdd, 0x2c,
+    0xab, 0x50, 0x19, 0x3b, 0xf2, 0x9b, 0x7d, 0xb8, 0xfd, 0x4f, 0x29, 0x9c,
+    0xa7, 0x91, 0xba, 0x0e, 0x46, 0x5e, 0x51, 0xfe, 0x1d, 0xbf, 0xe5, 0xe5,
+    0x9b, 0x95, 0x0d, 0x67, 0xf8, 0xd1, 0xb5, 0x5a, 0xa1, 0x93, 0x2c, 0xc3,
+    0xde, 0x0e, 0x97, 0x85, 0x2d, 0x7f, 0xea, 0xab, 0x3e, 0x47, 0x30, 0x18,
+    0x24, 0xe8, 0xb7, 0x60, 0xae, 0x47, 0x80, 0xfc, 0xe5, 0x23, 0xe7, 0xc2,
+    0xc9, 0x85, 0xe6, 0x98, 0xa0, 0x29, 0x4e, 0xe1, 0x84, 0x39, 0x2d, 0x95,
+    0x2c, 0xf3, 0x45, 0x3c, 0xff, 0xaf, 0x27, 0x4c, 0x6b, 0xa6, 0xf5, 0x4b,
+    0x11, 0xbd, 0xba, 0x5b, 0x9e, 0xc4, 0xa4, 0x51, 0x1e, 0xbe, 0xd0, 0x90,
+    0x3a, 0x9c, 0xc2, 0x26, 0xb6, 0x1e, 0xf1, 0x95, 0x7d, 0xc8, 0x6d, 0x52,
+    0xe6, 0x99, 0x2c, 0x5f, 0x9a, 0x96, 0x0c, 0x68, 0x29, 0xfd, 0xe2, 0xfb,
+    0xe6, 0xbc, 0xec, 0x31, 0x08, 0xec, 0xe6, 0xb0, 0x53, 0x60, 0xc3, 0x8c,
+    0xbe, 0xc1, 0xb3, 0x8a, 0x8f, 0xe4, 0x88, 0x2b, 0x55, 0xe5, 0x64, 0x6e,
+    0x9b, 0xd0, 0xaf, 0x7b, 0x64, 0x2a, 0x35, 0x25, 0x10, 0x52, 0xc5, 0x9e,
+    0x58, 0x11, 0x39, 0x36, 0x45, 0x51, 0xb8, 0x39, 0x93, 0xfc, 0x9d, 0x6a,
+    0xbe, 0x58, 0xcb, 0xa4, 0x0f, 0x51, 0x3c, 0x38, 0x05, 0xca, 0xab, 0x43,
+    0x63, 0x0e, 0xf3, 0x8b, 0x41, 0xa6, 0xf8, 0x9b, 0x53, 0x70, 0x80, 0x53,
+    0x86, 0x5e, 0x8f, 0xe3, 0xc3, 0x0d, 0x18, 0xc8, 0x4b, 0x34, 0x1f, 0xd8,
+    0x1d, 0xbc, 0xf2, 0x6d, 0x34, 0x3a, 0xbe, 0xdf, 0xd9, 0xf6, 0xf3, 0x89,
+    0xa1, 0xe1, 0x94, 0x9f, 0x5d, 0x4c, 0x5d, 0xe9, 0xa1, 0x49, 0x92, 0xef,
+    0x0e, 0x53, 0x81, 0x89, 0x58, 0x87, 0xa6, 0x37, 0xf1, 0xdd, 0x62, 0x60,
+    0x63, 0x5a, 0x9d, 0x1b, 0x8c, 0xc6, 0x7d, 0x52, 0xea, 0x70, 0x09, 0x6a,
+    0xe1, 0x32, 0xf3, 0x73, 0x21, 0x1f, 0x07, 0x7b, 0x7c, 0x9b, 0x49, 0xd8,
+    0xc0, 0xf3, 0x25, 0x72, 0x6f, 0x9d, 0xed, 0x31, 0x67, 0x36, 0x36, 0x54,
+    0x40, 0x92, 0x71, 0xe6, 0x11, 0x28, 0x11, 0xad, 0x93, 0x32, 0x85, 0x7b,
+    0x3e, 0xb7, 0x3b, 0x49, 0x13, 0x1c, 0x07, 0xb0, 0x2e, 0x93, 0xaa, 0xfd,
+    0xfd, 0x28, 0x47, 0x3d, 0x8d, 0xd2, 0xda, 0xc7, 0x44, 0xd6, 0x7a, 0xdb,
+    0x26, 0x7d, 0x1d, 0xb8, 0xe1, 0xde, 0x9d, 0x7a, 0x7d, 0x17, 0x7e, 0x1c,
+    0x37, 0x04, 0x8d, 0x2d, 0x7c, 0x5e, 0x18, 0x38, 0x1e, 0xaf, 0xc7, 0x1b,
+    0x33, 0x48, 0x31, 0x00, 0x59, 0xf6, 0xf2, 0xca, 0x0f, 0x27, 0x1b, 0x63,
+    0x12, 0x7e, 0x02, 0x1d, 0x49, 0xc0, 0x5d, 0x79, 0x87, 0xef, 0x5e, 0x7a,
+    0x2f, 0x1f, 0x66, 0x55, 0xd8, 0x09, 0xd9, 0x61, 0x38, 0x68, 0xb0, 0x07,
+    0xa3, 0xfc, 0xcc, 0x85, 0x10, 0x7f, 0x4c, 0x65, 0x65, 0xb3, 0xfa, 0xfa,
+    0xa5, 0x53, 0x6f, 0xdb, 0x74, 0x4c, 0x56, 0x46, 0x03, 0xe2, 0xd5, 0x7a,
+    0x29, 0x1c, 0xc6, 0x02, 0xbc, 0x59, 0xf2, 0x04, 0x75, 0x63, 0xc0, 0x84,
+    0x2f, 0x60, 0x1c, 0x67, 0x76, 0xfd, 0x63, 0x86, 0xf3, 0xfa, 0xbf, 0xdc,
+    0xd2, 0x2d, 0x90, 0x91, 0xbd, 0x33, 0xa9, 0xe5, 0x66, 0x0c, 0xda, 0x42,
+    0x27, 0xca, 0xf4, 0x66, 0xc2, 0xec, 0x92, 0x14, 0x57, 0x06, 0x63, 0xd0,
+    0x4d, 0x15, 0x06, 0xeb, 0x69, 0x58, 0x4f, 0x77, 0xc5, 0x8b, 0xc7, 0xf0,
+    0x8e, 0xed, 0x64, 0xa0, 0xb3, 0x3c, 0x66, 0x71, 0xc6, 0x2d, 0xda, 0x0a,
+    0x0d, 0xfe, 0x70, 0x27, 0x64, 0xf8, 0x27, 0xfa, 0xf6, 0x5f, 0x30, 0xa5,
+    0x0d, 0x6c, 0xda, 0xf2, 0x62, 0x5e, 0x78, 0x47, 0xd3, 0x66, 0x00, 0x1c,
+    0xfd, 0x56, 0x1f, 0x5d, 0x3f, 0x6f, 0xf4, 0x4c, 0xd8, 0xfd, 0x0e, 0x27,
+    0xc9, 0x5c, 0x2b, 0xbc, 0xc0, 0xa4, 0xe7, 0x23, 0x29, 0x02, 0x9f, 0x31,
+    0xd6, 0xe9, 0xd7, 0x96, 0xf4, 0xe0, 0x5e, 0x0b, 0x0e, 0x13, 0xee, 0x3c,
+    0x09, 0xed, 0xf2, 0x3d, 0x76, 0x91, 0xc3, 0xa4, 0x97, 0xae, 0xd4, 0x87,
+    0xd0, 0x5d, 0xf6, 0x18, 0x47, 0x1f, 0x1d, 0x67, 0xf2, 0xcf, 0x63, 0xa0,
+    0x91, 0x27, 0xf8, 0x93, 0x45, 0x75, 0x23, 0x3f, 0xd1, 0xf1, 0xad, 0x23,
+    0xdd, 0x64, 0x93, 0x96, 0x41, 0x70, 0x7f, 0xf7, 0xf5, 0xa9, 0x89, 0xa2,
+    0x34, 0xb0, 0x8d, 0x1b, 0xae, 0x19, 0x15, 0x49, 0x58, 0x23, 0x6d, 0x87,
+    0x15, 0x4f, 0x81, 0x76, 0xfb, 0x23, 0xb5, 0xea, 0xcf, 0xac, 0x54, 0x8d,
+    0x4e, 0x42, 0x2f, 0xeb, 0x0f, 0x63, 0xdb, 0x68, 0x37, 0xa8, 0xcf, 0x8b,
+    0xab, 0xf5, 0xa4, 0x6e, 0x96, 0x2a, 0xb2, 0xd6, 0xbe, 0x9e, 0xbd, 0x0d,
+    0xb4, 0x42, 0xa9, 0xcf, 0x01, 0x83, 0x8a, 0x17, 0x47, 0x76, 0xc4, 0xc6,
+    0x83, 0x04, 0x95, 0x0b, 0xfc, 0x11, 0xc9, 0x62, 0xb8, 0x0c, 0x76, 0x84,
+    0xd9, 0xb9, 0x37, 0xfa, 0xfc, 0x7c, 0xc2, 0x6d, 0x58, 0x3e, 0xb3, 0x04,
+    0xbb, 0x8c, 0x8f, 0x48, 0xbc, 0x91, 0x27, 0xcc, 0xf9, 0xb7, 0x22, 0x19,
+    0x83, 0x2e, 0x09, 0xb5, 0x72, 0xd9, 0x54, 0x1c, 0x4d, 0xa1, 0xea, 0x0b,
+    0xf1, 0xc6, 0x08, 0x72, 0x46, 0x87, 0x7a, 0x6e, 0x80, 0x56, 0x0a, 0x8a,
+    0xc0, 0xdd, 0x11, 0x6b, 0xd6, 0xdd, 0x47, 0xdf, 0x10, 0xd9, 0xd8, 0xea,
+    0x7c, 0xb0, 0x8f, 0x03, 0x00, 0x2e, 0xc1, 0x8f, 0x44, 0xa8, 0xd3, 0x30,
+    0x06, 0x89, 0xa2, 0xf9, 0x34, 0xad, 0xdc, 0x03, 0x85, 0xed, 0x51, 0xa7,
+    0x82, 0x9c, 0xe7, 0x5d, 0x52, 0x93, 0x0c, 0x32, 0x9a, 0x5b, 0xe1, 0xaa,
+    0xca, 0xb8, 0x02, 0x6d, 0x3a, 0xd4, 0xb1, 0x3a, 0xf0, 0x5f, 0xbe, 0xb5,
+    0x0d, 0x10, 0x6b, 0x38, 0x32, 0xac, 0x76, 0x80, 0xbd, 0xca, 0x94, 0x71,
+    0x7a, 0xf2, 0xc9, 0x35, 0x2a, 0xde, 0x9f, 0x42, 0x49, 0x18, 0x01, 0xab,
+    0xbc, 0xef, 0x7c, 0x64, 0x3f, 0x58, 0x3d, 0x92, 0x59, 0xdb, 0x13, 0xdb,
+    0x58, 0x6e, 0x0a, 0xe0, 0xb7, 0x91, 0x4a, 0x08, 0x20, 0xd6, 0x2e, 0x3c,
+    0x45, 0xc9, 0x8b, 0x17, 0x79, 0xe7, 0xc7, 0x90, 0x99, 0x3a, 0x18, 0x25,
+};
+
+#else
+
+// k25519Precomp[i][j] = (j+1)*256^i*B
+static const ge_precomp k25519Precomp[32][8] = {
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1288382639258501, 245678601348599, 269427782077623,
+                1462984067271730, 137412439391563
+#else
+                25967493, 19198397, 29566455, 3660896, 54414519, 4014786,
+                27544626, 21800161, 61029707, 2047604
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                62697248952638, 204681361388450, 631292143396476,
+                338455783676468, 1213667448819585
+#else
+                54563134, 934261, 64385954, 3049989, 66381436, 9406985,
+                12720692, 5043384, 19500929, 18085054
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                301289933810280, 1259582250014073, 1422107436869536,
+                796239922652654, 1953934009299142
+#else
+                58370664, 4489569, 9688441, 18769238, 10184608, 21191052,
+                29287918, 11864899, 42594502, 29115885
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1380971894829527, 790832306631236, 2067202295274102,
+                1995808275510000, 1566530869037010
+#else
+                54292951, 20578084, 45527620, 11784319, 41753206, 30803714,
+                55390960, 29739860, 66750418, 23343128
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                463307831301544, 432984605774163, 1610641361907204,
+                750899048855000, 1894842303421586
+#else
+                45405608, 6903824, 27185491, 6451973, 37531140, 24000426,
+                51492312, 11189267, 40279186, 28235350
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                748439484463711, 1033211726465151, 1396005112841647,
+                1611506220286469, 1972177495910992
+#else
+                26966623, 11152617, 32442495, 15396054, 14353839, 20802097,
+                63980037, 24013313, 51636816, 29387734
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1601611775252272, 1720807796594148, 1132070835939856,
+                1260455018889551, 2147779492816911
+#else
+                15636272, 23865875, 24204772, 25642034, 616976, 16869170,
+                27787599, 18782243, 28944399, 32004408
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                316559037616741, 2177824224946892, 1459442586438991,
+                1461528397712656, 751590696113597
+#else
+                16568933, 4717097, 55552716, 32452109, 15682895, 21747389,
+                16354576, 21778470, 7689661, 11199574
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1850748884277385, 1200145853858453, 1068094770532492,
+                672251375690438, 1586055907191707
+#else
+                30464137, 27578307, 55329429, 17883566, 23220364, 15915852,
+                7512774, 10017326, 49359771, 23634074
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                934282339813791, 1846903124198670, 1172395437954843,
+                1007037127761661, 1830588347719256
+#else
+                50071967, 13921891, 10945806, 27521001, 27105051, 17470053,
+                38182653, 15006022, 3284568, 27277892
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1694390458783935, 1735906047636159, 705069562067493,
+                648033061693059, 696214010414170
+#else
+                23599295, 25248385, 55915199, 25867015, 13236773, 10506355,
+                7464579, 9656445, 13059162, 10374397
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121406372216585, 192876649532226, 190294192191717,
+                1994165897297032, 2245000007398739
+#else
+                7798537, 16710257, 3033922, 2874086, 28997861, 2835604,
+                32406664, 29715387, 66467155, 33453106
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                769950342298419, 132954430919746, 844085933195555,
+                974092374476333, 726076285546016
+#else
+                10861363, 11473154, 27284546, 1981175, 37044515, 12577860,
+                32867885, 14515107, 51670560, 10819379
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                425251763115706, 608463272472562, 442562545713235,
+                837766094556764, 374555092627893
+#else
+                4708026, 6336745, 20377586, 9066809, 55836755, 6594695,
+                41455196, 12483687, 54440373, 5581305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1086255230780037, 274979815921559, 1960002765731872,
+                929474102396301, 1190409889297339
+#else
+                19563141, 16186464, 37722007, 4097518, 10237984, 29206317,
+                28542349, 13850243, 43430843, 17738489
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1388594989461809, 316767091099457, 394298842192982,
+                1230079486801005, 1440737038838979
+#else
+                51736881, 20691677, 32573249, 4720197, 40672342, 5875510,
+                47920237, 18329612, 57289923, 21468654
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                7380825640100, 146210432690483, 304903576448906,
+                1198869323871120, 997689833219095
+#else
+                58559652, 109982, 15149363, 2178705, 22900618, 4543417, 3044240,
+                17864545, 1762327, 14866737
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1181317918772081, 114573476638901, 262805072233344,
+                265712217171332, 294181933805782
+#else
+                48909169, 17603008, 56635573, 1707277, 49922944, 3916100,
+                38872452, 3959420, 27914454, 4383652
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665000864555967, 2065379846933859, 370231110385876,
+                350988370788628, 1233371373142985
+#else
+                5153727, 9909285, 1723747, 30776558, 30523604, 5516873,
+                19480852, 5230134, 43156425, 18378665
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2019367628972465, 676711900706637, 110710997811333,
+                1108646842542025, 517791959672113
+#else
+                36839857, 30090922, 7665485, 10083793, 28475525, 1649722,
+                20654025, 16520125, 30598449, 7715701
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                965130719900578, 247011430587952, 526356006571389,
+                91986625355052, 2157223321444601
+#else
+                28881826, 14381568, 9657904, 3680757, 46927229, 7843315,
+                35708204, 1370707, 29794553, 32145132
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2068619540119183, 1966274918058806, 957728544705549,
+                729906502578991, 159834893065166
+#else
+                14499471, 30824833, 33917750, 29299779, 28494861, 14271267,
+                30290735, 10876454, 33954766, 2381725
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2073601412052185, 31021124762708, 264500969797082,
+                248034690651703, 1030252227928288
+#else
+                59913433, 30899068, 52378708, 462250, 39384538, 3941371,
+                60872247, 3696004, 34808032, 15351954
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                551790716293402, 1989538725166328, 801169423371717,
+                2052451893578887, 678432056995012
+#else
+                27431194, 8222322, 16448760, 29646437, 48401861, 11938354,
+                34147463, 30583916, 29551812, 10109425
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1368953770187805, 790347636712921, 437508475667162,
+                2142576377050580, 1932081720066286
+#else
+                53451805, 20399000, 35825113, 11777097, 21447386, 6519384,
+                64730580, 31926875, 10092782, 28790261
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                953638594433374, 1092333936795051, 1419774766716690,
+                805677984380077, 859228993502513
+#else
+                27939166, 14210322, 4677035, 16277044, 44144402, 21156292,
+                34600109, 12005537, 49298737, 12803509
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1200766035879111, 20142053207432, 1465634435977050,
+                1645256912097844, 295121984874596
+#else
+                17228999, 17892808, 65875336, 300139, 65883994, 21839654,
+                30364212, 24516238, 18016356, 4397660
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1735718747031557, 1248237894295956, 1204753118328107,
+                976066523550493, 65943769534592
+#else
+                56150021, 25864224, 4776340, 18600194, 27850027, 17952220,
+                40489757, 14544524, 49631360, 982638
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1060098822528990, 1586825862073490, 212301317240126,
+                1975302711403555, 666724059764335
+#else
+                29253598, 15796703, 64244882, 23645547, 10057022, 3163536,
+                7332899, 29434304, 46061167, 9934962
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1091990273418756, 1572899409348578, 80968014455247,
+                306009358661350, 1520450739132526
+#else
+                5793284, 16271923, 42977250, 23438027, 29188559, 1206517,
+                52360934, 4559894, 36984942, 22656481
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1480517209436112, 1511153322193952, 1244343858991172,
+                304788150493241, 369136856496443
+#else
+                39464912, 22061425, 16282656, 22517939, 28414020, 18542168,
+                24191033, 4541697, 53770555, 5500567
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2151330273626164, 762045184746182, 1688074332551515,
+                823046109005759, 907602769079491
+#else
+                12650548, 32057319, 9052870, 11355358, 49428827, 25154267,
+                49678271, 12264342, 10874051, 13524335
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2047386910586836, 168470092900250, 1552838872594810,
+                340951180073789, 360819374702533
+#else
+                25556948, 30508442, 714650, 2510400, 23394682, 23139102,
+                33119037, 5080568, 44580805, 5376627
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1982622644432056, 2014393600336956, 128909208804214,
+                1617792623929191, 105294281913815
+#else
+                41020600, 29543379, 50095164, 30016803, 60382070, 1920896,
+                44787559, 24106988, 4535767, 1569007
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                980234343912898, 1712256739246056, 588935272190264,
+                204298813091998, 841798321043288
+#else
+                64853442, 14606629, 45416424, 25514613, 28430648, 8775819,
+                36614302, 3044289, 31848280, 12543772
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                197561292938973, 454817274782871, 1963754960082318,
+                2113372252160468, 971377527342673
+#else
+                45080285, 2943892, 35251351, 6777305, 13784462, 29262229,
+                39731668, 31491700, 7718481, 14474653
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                164699448829328, 3127451757672, 1199504971548753,
+                1766155447043652, 1899238924683527
+#else
+                2385296, 2454213, 44477544, 46602, 62670929, 17874016, 656964,
+                26317767, 24316167, 28300865
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                732262946680281, 1674412764227063, 2182456405662809,
+                1350894754474250, 558458873295247
+#else
+                13741529, 10911568, 33875447, 24950694, 46931033, 32521134,
+                33040650, 20129900, 46379407, 8321685
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2103305098582922, 1960809151316468, 715134605001343,
+                1454892949167181, 40827143824949
+#else
+                21060490, 31341688, 15712756, 29218333, 1639039, 10656336,
+                23845965, 21679594, 57124405, 608371
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1239289043050212, 1744654158124578, 758702410031698,
+                1796762995074688, 1603056663766
+#else
+                53436132, 18466845, 56219170, 25997372, 61071954, 11305546,
+                1123968, 26773855, 27229398, 23887
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2232056027107988, 987343914584615, 2115594492994461,
+                1819598072792159, 1119305654014850
+#else
+                43864724, 33260226, 55364135, 14712570, 37643165, 31524814,
+                12797023, 27114124, 65475458, 16678953
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                320153677847348, 939613871605645, 641883205761567,
+                1930009789398224, 329165806634126
+#else
+                37608244, 4770661, 51054477, 14001337, 7830047, 9564805,
+                65600720, 28759386, 49939598, 4904952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                980930490474130, 1242488692177893, 1251446316964684,
+                1086618677993530, 1961430968465772
+#else
+                24059538, 14617003, 19037157, 18514524, 19766092, 18648003,
+                5169210, 16191880, 2128236, 29227599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                276821765317453, 1536835591188030, 1305212741412361,
+                61473904210175, 2051377036983058
+#else
+                50127693, 4124965, 58568254, 22900634, 30336521, 19449185,
+                37302527, 916032, 60226322, 30567899
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                833449923882501, 1750270368490475, 1123347002068295,
+                185477424765687, 278090826653186
+#else
+                44477957, 12419371, 59974635, 26081060, 50629959, 16739174,
+                285431, 2763829, 15736322, 4143876
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                794524995833413, 1849907304548286, 53348672473145,
+                1272368559505217, 1147304168324779
+#else
+                2379333, 11839345, 62998462, 27565766, 11274297, 794957, 212801,
+                18959769, 23527083, 17096164
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1504846112759364, 1203096289004681, 562139421471418,
+                274333017451844, 1284344053775441
+#else
+                33431108, 22423954, 49269897, 17927531, 8909498, 8376530,
+                34483524, 4087880, 51919953, 19138217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                483048732424432, 2116063063343382, 30120189902313,
+                292451576741007, 1156379271702225
+#else
+                1767664, 7197987, 53903638, 31531796, 54017513, 448825, 5799055,
+                4357868, 62334673, 17231393
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                928372153029038, 2147692869914564, 1455665844462196,
+                1986737809425946, 185207050258089
+#else
+                6721966, 13833823, 43585476, 32003117, 26354292, 21691111,
+                23365146, 29604700, 7390889, 2759800
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                137732961814206, 706670923917341, 1387038086865771,
+                1965643813686352, 1384777115696347
+#else
+                4409022, 2052381, 23373853, 10530217, 7676779, 20668478,
+                21302352, 29290375, 1244379, 20634787
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                481144981981577, 2053319313589856, 2065402289827512,
+                617954271490316, 1106602634668125
+#else
+                62687625, 7169618, 4982368, 30596842, 30256824, 30776892,
+                14086412, 9208236, 15886429, 16489664
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                696298019648792, 893299659040895, 1148636718636009,
+                26734077349617, 2203955659340681
+#else
+                1996056, 10375649, 14346367, 13311202, 60234729, 17116020,
+                53415665, 398368, 36502409, 32841498
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                657390353372855, 998499966885562, 991893336905797,
+                810470207106761, 343139804608786
+#else
+                41801399, 9795879, 64331450, 14878808, 33577029, 14780362,
+                13348553, 12076947, 36272402, 5113181
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                791736669492960, 934767652997115, 824656780392914,
+                1759463253018643, 361530362383518
+#else
+                49338080, 11797795, 31950843, 13929123, 41220562, 12288343,
+                36767763, 26218045, 13847710, 5387222
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022541353055597, 2094700262587466, 1551008075025686,
+                242785517418164, 695985404963562
+#else
+                48526701, 30138214, 17824842, 31213466, 22744342, 23111821,
+                8763060, 3617786, 47508202, 10370990
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287487199965223, 2215311941380308, 1552928390931986,
+                1664859529680196, 1125004975265243
+#else
+                20246567, 19185054, 22358228, 33010720, 18507282, 23140436,
+                14554436, 24808340, 32232923, 16763880
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                677434665154918, 989582503122485, 1817429540898386,
+                1052904935475344, 1143826298169798
+#else
+                9648486, 10094563, 26416693, 14745928, 36734546, 27081810,
+                11094160, 15689506, 3140038, 17044340
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                367266328308408, 318431188922404, 695629353755355,
+                634085657580832, 24581612564426
+#else
+                50948792, 5472694, 31895588, 4744994, 8823515, 10365685,
+                39884064, 9448612, 38334410, 366294
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                773360688841258, 1815381330538070, 363773437667376,
+                539629987070205, 783280434248437
+#else
+                19153450, 11523972, 56012374, 27051289, 42461232, 5420646,
+                28344573, 8041113, 719605, 11671788
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                180820816194166, 168937968377394, 748416242794470,
+                1227281252254508, 1567587861004268
+#else
+                8678006, 2694440, 60300850, 2517371, 4964326, 11152271,
+                51675948, 18287915, 27000812, 23358879
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                478775558583645, 2062896624554807, 699391259285399,
+                358099408427873, 1277310261461761
+#else
+                51950941, 7134311, 8639287, 30739555, 59873175, 10421741,
+                564065, 5336097, 6750977, 19033406
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1984740906540026, 1079164179400229, 1056021349262661,
+                1659958556483663, 1088529069025527
+#else
+                11836410, 29574944, 26297893, 16080799, 23455045, 15735944,
+                1695823, 24735310, 8169719, 16220347
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                580736401511151, 1842931091388998, 1177201471228238,
+                2075460256527244, 1301133425678027
+#else
+                48993007, 8653646, 17578566, 27461813, 59083086, 17541668,
+                55964556, 30926767, 61118155, 19388398
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1515728832059182, 1575261009617579, 1510246567196186,
+                191078022609704, 116661716289141
+#else
+                43800366, 22586119, 15213227, 23473218, 36255258, 22504427,
+                27884328, 2847284, 2655861, 1738395
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295295738269652, 1714742313707026, 545583042462581,
+                2034411676262552, 1513248090013606
+#else
+                39571412, 19301410, 41772562, 25551651, 57738101, 8129820,
+                21651608, 30315096, 48021414, 22549153
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                230710545179830, 30821514358353, 760704303452229,
+                390668103790604, 573437871383156
+#else
+                1533110, 3437855, 23735889, 459276, 29970501, 11335377,
+                26030092, 5821408, 10478196, 8544890
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1169380107545646, 263167233745614, 2022901299054448,
+                819900753251120, 2023898464874585
+#else
+                32173102, 17425121, 24896206, 3921497, 22579056, 30143578,
+                19270448, 12217473, 17789017, 30158437
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102254323485823, 1570832666216754, 34696906544624,
+                1993213739807337, 70638552271463
+#else
+                36555903, 31326030, 51530034, 23407230, 13243888, 517024,
+                15479401, 29701199, 30460519, 1052596
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                894132856735058, 548675863558441, 845349339503395,
+                1942269668326667, 1615682209874691
+#else
+                55493970, 13323617, 32618793, 8175907, 51878691, 12596686,
+                27491595, 28942073, 3179267, 24075541
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287670217537834, 1222355136884920, 1846481788678694,
+                1150426571265110, 1613523400722047
+#else
+                31947050, 19187781, 62468280, 18214510, 51982886, 27514722,
+                52352086, 17142691, 19072639, 24043372
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                793388516527298, 1315457083650035, 1972286999342417,
+                1901825953052455, 338269477222410
+#else
+                11685058, 11822410, 3158003, 19601838, 33402193, 29389366,
+                5977895, 28339415, 473098, 5040608
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                550201530671806, 778605267108140, 2063911101902983,
+                115500557286349, 2041641272971022
+#else
+                46817982, 8198641, 39698732, 11602122, 1290375, 30754672,
+                28326861, 1721092, 47550222, 30422825
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                717255318455100, 519313764361315, 2080406977303708,
+                541981206705521, 774328150311600
+#else
+                7881532, 10687937, 7578723, 7738378, 48157852, 31000479,
+                21820785, 8076149, 39240368, 11538388
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                261715221532238, 1795354330069993, 1496878026850283,
+                499739720521052, 389031152673770
+#else
+                47173198, 3899860, 18283497, 26752864, 51380203, 22305220,
+                8754524, 7446702, 61432810, 5797015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1997217696294013, 1717306351628065, 1684313917746180,
+                1644426076011410, 1857378133465451
+#else
+                55813245, 29760862, 51326753, 25589858, 12708868, 25098233,
+                2014098, 24503858, 64739691, 27677090
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1475434724792648, 76931896285979, 1116729029771667,
+                2002544139318042, 725547833803938
+#else
+                44636488, 21985690, 39426843, 1146374, 18956691, 16640559,
+                1192730, 29840233, 15123618, 10811505
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022306639183567, 726296063571875, 315345054448644,
+                1058733329149221, 1448201136060677
+#else
+                14352079, 30134717, 48166819, 10822654, 32750596, 4699007,
+                67038501, 15776355, 38222085, 21579878
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1710065158525665, 1895094923036397, 123988286168546,
+                1145519900776355, 1607510767693874
+#else
+                38867681, 25481956, 62129901, 28239114, 29416930, 1847569,
+                46454691, 17069576, 4714546, 23953777
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                561605375422540, 1071733543815037, 131496498800990,
+                1946868434569999, 828138133964203
+#else
+                15200332, 8368572, 19679101, 15970074, 35236190, 1959450,
+                24611599, 29010600, 55362987, 12340219
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1548495173745801, 442310529226540, 998072547000384,
+                553054358385281, 644824326376171
+#else
+                12876937, 23074376, 33134380, 6590940, 60801088, 14872439,
+                9613953, 8241152, 15370987, 9608631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1445526537029440, 2225519789662536, 914628859347385,
+                1064754194555068, 1660295614401091
+#else
+                62965568, 21540023, 8446280, 33162829, 4407737, 13629032,
+                59383996, 15866073, 38898243, 24740332
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1199690223111956, 24028135822341, 66638289244341,
+                57626156285975, 565093967979607
+#else
+                26660628, 17876777, 8393733, 358047, 59707573, 992987, 43204631,
+                858696, 20571223, 8420556
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                876926774220824, 554618976488214, 1012056309841565,
+                839961821554611, 1414499340307677
+#else
+                14620696, 13067227, 51661590, 8264466, 14106269, 15080814,
+                33531827, 12516406, 45534429, 21077682
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                703047626104145, 1266841406201770, 165556500219173,
+                486991595001879, 1011325891650656
+#else
+                236881, 10476226, 57258, 18877408, 6472997, 2466984, 17258519,
+                7256740, 8791136, 15069930
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1622861044480487, 1156394801573634, 1869132565415504,
+                327103985777730, 2095342781472284
+#else
+                1276391, 24182514, 22949634, 17231625, 43615824, 27852245,
+                14711874, 4874229, 36445724, 31223040
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                334886927423922, 489511099221528, 129160865966726,
+                1720809113143481, 619700195649254
+#else
+                5855666, 4990204, 53397016, 7294283, 59304582, 1924646,
+                65685689, 25642053, 34039526, 9234252
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1646545795166119, 1758370782583567, 714746174550637,
+                1472693650165135, 898994790308209
+#else
+                20590503, 24535444, 31529743, 26201766, 64402029, 10650547,
+                31559055, 21944845, 18979185, 13396066
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                333403773039279, 295772542452938, 1693106465353610,
+                912330357530760, 471235657950362
+#else
+                24474287, 4968103, 22267082, 4407354, 24063882, 25229252,
+                48291976, 13594781, 33514650, 7021958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1811196219982022, 1068969825533602, 289602974833439,
+                1988956043611592, 863562343398367
+#else
+                55541958, 26988926, 45743778, 15928891, 40950559, 4315420,
+                41160136, 29637754, 45628383, 12868081
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                906282429780072, 2108672665779781, 432396390473936,
+                150625823801893, 1708930497638539
+#else
+                38473832, 13504660, 19988037, 31421671, 21078224, 6443208,
+                45662757, 2244499, 54653067, 25465048
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                925664675702328, 21416848568684, 1831436641861340,
+                601157008940113, 371818055044496
+#else
+                36513336, 13793478, 61256044, 319135, 41385692, 27290532,
+                33086545, 8957937, 51875216, 5540520
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1479786007267725, 1738881859066675, 68646196476567,
+                2146507056100328, 1247662817535471
+#else
+                55478669, 22050529, 58989363, 25911358, 2620055, 1022908,
+                43398120, 31985447, 50980335, 18591624
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                52035296774456, 939969390708103, 312023458773250,
+                59873523517659, 1231345905848899
+#else
+                23152952, 775386, 27395463, 14006635, 57407746, 4649511,
+                1689819, 892185, 55595587, 18348483
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                643355106415761, 290186807495774, 2013561737429023,
+                319648069511546, 393736678496162
+#else
+                9770129, 9586738, 26496094, 4324120, 1556511, 30004408,
+                27453818, 4763127, 47929250, 5867133
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                129358342392716, 1932811617704777, 1176749390799681,
+                398040349861790, 1170779668090425
+#else
+                34343820, 1927589, 31726409, 28801137, 23962433, 17534932,
+                27846558, 5931263, 37359161, 17445976
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2051980782668029, 121859921510665, 2048329875753063,
+                1235229850149665, 519062146124755
+#else
+                27461885, 30576896, 22380809, 1815854, 44075111, 30522493,
+                7283489, 18406359, 47582163, 7734628
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1608170971973096, 415809060360428, 1350468408164766,
+                2038620059057678, 1026904485989112
+#else
+                59098600, 23963614, 55988460, 6196037, 29344158, 20123547,
+                7585294, 30377806, 18549496, 15302069
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1837656083115103, 1510134048812070, 906263674192061,
+                1821064197805734, 565375124676301
+#else
+                34450527, 27383209, 59436070, 22502750, 6258877, 13504381,
+                10458790, 27135971, 58236621, 8424745
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                578027192365650, 2034800251375322, 2128954087207123,
+                478816193810521, 2196171989962750
+#else
+                24687186, 8613276, 36441818, 30320886, 1863891, 31723888,
+                19206233, 7134917, 55824382, 32725512
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1633188840273139, 852787172373708, 1548762607215796,
+                1266275218902681, 1107218203325133
+#else
+                11334899, 24336410, 8025292, 12707519, 17523892, 23078361,
+                10243737, 18868971, 62042829, 16498836
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                462189358480054, 1784816734159228, 1611334301651368,
+                1303938263943540, 707589560319424
+#else
+                8911542, 6887158, 57524604, 26595841, 11145640, 24010752,
+                17303924, 19430194, 6536640, 10543906
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1038829280972848, 38176604650029, 753193246598573,
+                1136076426528122, 595709990562434
+#else
+                38162480, 15479762, 49642029, 568875, 65611181, 11223453,
+                64439674, 16928857, 39873154, 8876770
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1408451820859834, 2194984964010833, 2198361797561729,
+                1061962440055713, 1645147963442934
+#else
+                41365946, 20987567, 51458897, 32707824, 34082177, 32758143,
+                33627041, 15824473, 66504438, 24514614
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                4701053362120, 1647641066302348, 1047553002242085,
+                1923635013395977, 206970314902065
+#else
+                10330056, 70051, 7957388, 24551765, 9764901, 15609756, 27698697,
+                28664395, 1657393, 3084098
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1750479161778571, 1362553355169293, 1891721260220598,
+                966109370862782, 1024913988299801
+#else
+                10477963, 26084172, 12119565, 20303627, 29016246, 28188843,
+                31280318, 14396151, 36875289, 15272408
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                212699049131723, 1117950018299775, 1873945661751056,
+                1403802921984058, 130896082652698
+#else
+                54820555, 3169462, 28813183, 16658753, 25116432, 27923966,
+                41934906, 20918293, 42094106, 1950503
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                636808533673210, 1262201711667560, 390951380330599,
+                1663420692697294, 561951321757406
+#else
+                40928506, 9489186, 11053416, 18808271, 36055143, 5825629,
+                58724558, 24786899, 15341278, 8373727
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                520731594438141, 1446301499955692, 273753264629267,
+                1565101517999256, 1019411827004672
+#else
+                28685821, 7759505, 52730348, 21551571, 35137043, 4079241,
+                298136, 23321830, 64230656, 15190419
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                926527492029409, 1191853477411379, 734233225181171,
+                184038887541270, 1790426146325343
+#else
+                34175969, 13806335, 52771379, 17760000, 43104243, 10940927,
+                8669718, 2742393, 41075551, 26679428
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1464651961852572, 1483737295721717, 1519450561335517,
+                1161429831763785, 405914998179977
+#else
+                65528476, 21825014, 41129205, 22109408, 49696989, 22641577,
+                9291593, 17306653, 54954121, 6048604
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996126634382301, 796204125879525, 127517800546509,
+                344155944689303, 615279846169038
+#else
+                36803549, 14843443, 1539301, 11864366, 20201677, 1900163,
+                13934231, 5128323, 11213262, 9168384
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                738724080975276, 2188666632415296, 1961313708559162,
+                1506545807547587, 1151301638969740
+#else
+                40828332, 11007846, 19408960, 32613674, 48515898, 29225851,
+                62020803, 22449281, 20470156, 17155731
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622917337413835, 1218989177089035, 1284857712846592,
+                970502061709359, 351025208117090
+#else
+                43972811, 9282191, 14855179, 18164354, 59746048, 19145871,
+                44324911, 14461607, 14042978, 5230683
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2067814584765580, 1677855129927492, 2086109782475197,
+                235286517313238, 1416314046739645
+#else
+                29969548, 30812838, 50396996, 25001989, 9175485, 31085458,
+                21556950, 3506042, 61174973, 21104723
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                586844262630358, 307444381952195, 458399356043426,
+                602068024507062, 1028548203415243
+#else
+                63964118, 8744660, 19704003, 4581278, 46678178, 6830682,
+                45824694, 8971512, 38569675, 15326562
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                678489922928203, 2016657584724032, 90977383049628,
+                1026831907234582, 615271492942522
+#else
+                47644235, 10110287, 49846336, 30050539, 43608476, 1355668,
+                51585814, 15300987, 46594746, 9168259
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                301225714012278, 1094837270268560, 1202288391010439,
+                644352775178361, 1647055902137983
+#else
+                61755510, 4488612, 43305616, 16314346, 7780487, 17915493,
+                38160505, 9601604, 33087103, 24543045
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1210746697896478, 1416608304244708, 686487477217856,
+                1245131191434135, 1051238336855737
+#else
+                47665694, 18041531, 46311396, 21109108, 37284416, 10229460,
+                39664535, 18553900, 61111993, 15664671
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1135604073198207, 1683322080485474, 769147804376683,
+                2086688130589414, 900445683120379
+#else
+                23294591, 16921819, 44458082, 25083453, 27844203, 11461195,
+                13099750, 31094076, 18151675, 13417686
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1971518477615628, 401909519527336, 448627091057375,
+                1409486868273821, 1214789035034363
+#else
+                42385932, 29377914, 35958184, 5988918, 40250079, 6685064,
+                1661597, 21002991, 15271675, 18101767
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1364039144731711, 1897497433586190, 2203097701135459,
+                145461396811251, 1349844460790699
+#else
+                11433023, 20325767, 8239630, 28274915, 65123427, 32828713,
+                48410099, 2167543, 60187563, 20114249
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1045230323257973, 818206601145807, 630513189076103,
+                1672046528998132, 807204017562437
+#else
+                35672693, 15575145, 30436815, 12192228, 44645511, 9395378,
+                57191156, 24915434, 12215109, 12028277
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                439961968385997, 386362664488986, 1382706320807688,
+                309894000125359, 2207801346498567
+#else
+                14098381, 6555944, 23007258, 5757252, 51681032, 20603929,
+                30123439, 4617780, 50208775, 32898803
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1229004686397588, 920643968530863, 123975893911178,
+                681423993215777, 1400559197080973
+#else
+                63082644, 18313596, 11893167, 13718664, 52299402, 1847384,
+                51288865, 10154008, 23973261, 20869958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2003766096898049, 170074059235165, 1141124258967971,
+                1485419893480973, 1573762821028725
+#else
+                40577025, 29858441, 65199965, 2534300, 35238307, 17004076,
+                18341389, 22134481, 32013173, 23450893
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                729905708611432, 1270323270673202, 123353058984288,
+                426460209632942, 2195574535456672
+#else
+                41629544, 10876442, 55337778, 18929291, 54739296, 1838103,
+                21911214, 6354752, 4425632, 32716610
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1271140255321235, 2044363183174497, 52125387634689,
+                1445120246694705, 942541986339084
+#else
+                56675475, 18941465, 22229857, 30463385, 53917697, 776728,
+                49693489, 21533969, 4725004, 14044970
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1761608437466135, 583360847526804, 1586706389685493,
+                2157056599579261, 1170692369685772
+#else
+                19268631, 26250011, 1555348, 8692754, 45634805, 23643767,
+                6347389, 32142648, 47586572, 17444675
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                871476219910823, 1878769545097794, 2241832391238412,
+                548957640601001, 690047440233174
+#else
+                42244775, 12986007, 56209986, 27995847, 55796492, 33405905,
+                19541417, 8180106, 9282262, 10282508
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                297194732135507, 1366347803776820, 1301185512245601,
+                561849853336294, 1533554921345731
+#else
+                40903763, 4428546, 58447668, 20360168, 4098401, 19389175,
+                15522534, 8372215, 5542595, 22851749
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                999628998628371, 1132836708493400, 2084741674517453,
+                469343353015612, 678782988708035
+#else
+                56546323, 14895632, 26814552, 16880582, 49628109, 31065071,
+                64326972, 6993760, 49014979, 10114654
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2189427607417022, 699801937082607, 412764402319267,
+                1478091893643349, 2244675696854460
+#else
+                47001790, 32625013, 31422703, 10427861, 59998115, 6150668,
+                38017109, 22025285, 25953724, 33448274
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1712292055966563, 204413590624874, 1405738637332841,
+                408981300829763, 861082219276721
+#else
+                62874467, 25515139, 57989738, 3045999, 2101609, 20947138,
+                19390019, 6094296, 63793585, 12831124
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                508561155940631, 966928475686665, 2236717801150132,
+                424543858577297, 2089272956986143
+#else
+                51110167, 7578151, 5310217, 14408357, 33560244, 33329692,
+                31575953, 6326196, 7381791, 31132593
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                221245220129925, 1156020201681217, 491145634799213,
+                542422431960839, 828100817819207
+#else
+                46206085, 3296810, 24736065, 17226043, 18374253, 7318640,
+                6295303, 8082724, 51746375, 12339663
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                153756971240384, 1299874139923977, 393099165260502,
+                1058234455773022, 996989038681183
+#else
+                27724736, 2291157, 6088201, 19369634, 1792726, 5857634,
+                13848414, 15768922, 25091167, 14856294
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                559086812798481, 573177704212711, 1629737083816402,
+                1399819713462595, 1646954378266038
+#else
+                48242193, 8331042, 24373479, 8541013, 66406866, 24284974,
+                12927299, 20858939, 44926390, 24541532
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1887963056288059, 228507035730124, 1468368348640282,
+                930557653420194, 613513962454686
+#else
+                55685435, 28132841, 11632844, 3405020, 30536730, 21880393,
+                39848098, 13866389, 30146206, 9142070
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1224529808187553, 1577022856702685, 2206946542980843,
+                625883007765001, 279930793512158
+#else
+                3924129, 18246916, 53291741, 23499471, 12291819, 32886066,
+                39406089, 9326383, 58871006, 4171293
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1076287717051609, 1114455570543035, 187297059715481,
+                250446884292121, 1885187512550540
+#else
+                51186905, 16037936, 6713787, 16606682, 45496729, 2790943,
+                26396185, 3731949, 345228, 28091483
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                902497362940219, 76749815795675, 1657927525633846,
+                1420238379745202, 1340321636548352
+#else
+                45781307, 13448258, 25284571, 1143661, 20614966, 24705045,
+                2031538, 21163201, 50855680, 19972348
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1129576631190784, 1281994010027327, 996844254743018,
+                257876363489249, 1150850742055018
+#else
+                31016192, 16832003, 26371391, 19103199, 62081514, 14854136,
+                17477601, 3842657, 28012650, 17149012
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                628740660038789, 1943038498527841, 467786347793886,
+                1093341428303375, 235413859513003
+#else
+                62033029, 9368965, 58546785, 28953529, 51858910, 6970559,
+                57918991, 16292056, 58241707, 3507939
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                237425418909360, 469614029179605, 1512389769174935,
+                1241726368345357, 441602891065214
+#else
+                29439664, 3537914, 23333589, 6997794, 49553303, 22536363,
+                51899661, 18503164, 57943934, 6580395
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1736417953058555, 726531315520508, 1833335034432527,
+                1629442561574747, 624418919286085
+#else
+                54923003, 25874643, 16438268, 10826160, 58412047, 27318820,
+                17860443, 24280586, 65013061, 9304566
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1960754663920689, 497040957888962, 1909832851283095,
+                1271432136996826, 2219780368020940
+#else
+                20714545, 29217521, 29088194, 7406487, 11426967, 28458727,
+                14792666, 18945815, 5289420, 33077305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1537037379417136, 1358865369268262, 2130838645654099,
+                828733687040705, 1999987652890901
+#else
+                50443312, 22903641, 60948518, 20248671, 9192019, 31751970,
+                17271489, 12349094, 26939669, 29802138
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                629042105241814, 1098854999137608, 887281544569320,
+                1423102019874777, 7911258951561
+#else
+                54218966, 9373457, 31595848, 16374215, 21471720, 13221525,
+                39825369, 21205872, 63410057, 117886
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1811562332665373, 1501882019007673, 2213763501088999,
+                359573079719636, 36370565049116
+#else
+                22263325, 26994382, 3984569, 22379786, 51994855, 32987646,
+                28311252, 5358056, 43789084, 541963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                218907117361280, 1209298913016966, 1944312619096112,
+                1130690631451061, 1342327389191701
+#else
+                16259200, 3261970, 2309254, 18019958, 50223152, 28972515,
+                24134069, 16848603, 53771797, 20002236
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1369976867854704, 1396479602419169, 1765656654398856,
+                2203659200586299, 998327836117241
+#else
+                9378160, 20414246, 44262881, 20809167, 28198280, 26310334,
+                64709179, 32837080, 690425, 14876244
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2230701885562825, 1348173180338974, 2172856128624598,
+                1426538746123771, 444193481326151
+#else
+                24977353, 33240048, 58884894, 20089345, 28432342, 32378079,
+                54040059, 21257083, 44727879, 6618998
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                784210426627951, 918204562375674, 1284546780452985,
+                1324534636134684, 1872449409642708
+#else
+                65570671, 11685645, 12944378, 13682314, 42719353, 19141238,
+                8044828, 19737104, 32239828, 27901670
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                319638829540294, 596282656808406, 2037902696412608,
+                1557219121643918, 341938082688094
+#else
+                48505798, 4762989, 66182614, 8885303, 38696384, 30367116,
+                9781646, 23204373, 32779358, 5095274
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1901860206695915, 2004489122065736, 1625847061568236,
+                973529743399879, 2075287685312905
+#else
+                34100715, 28339925, 34843976, 29869215, 9460460, 24227009,
+                42507207, 14506723, 21639561, 30924196
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1371853944110545, 1042332820512553, 1949855697918254,
+                1791195775521505, 37487364849293
+#else
+                50707921, 20442216, 25239337, 15531969, 3987758, 29055114,
+                65819361, 26690896, 17874573, 558605
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                687200189577855, 1082536651125675, 644224940871546,
+                340923196057951, 343581346747396
+#else
+                53508735, 10240080, 9171883, 16131053, 46239610, 9599699,
+                33499487, 5080151, 2085892, 5119761
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2082717129583892, 27829425539422, 145655066671970,
+                1690527209845512, 1865260509673478
+#else
+                44903700, 31034903, 50727262, 414690, 42089314, 2170429,
+                30634760, 25190818, 35108870, 27794547
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1059729620568824, 2163709103470266, 1440302280256872,
+                1769143160546397, 869830310425069
+#else
+                60263160, 15791201, 8550074, 32241778, 29928808, 21462176,
+                27534429, 26362287, 44757485, 12961481
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1609516219779025, 777277757338817, 2101121130363987,
+                550762194946473, 1905542338659364
+#else
+                42616785, 23983660, 10368193, 11582341, 43711571, 31309144,
+                16533929, 8206996, 36914212, 28394793
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2024821921041576, 426948675450149, 595133284085473,
+                471860860885970, 600321679413000
+#else
+                55987368, 30172197, 2307365, 6362031, 66973409, 8868176,
+                50273234, 7031274, 7589640, 8945490
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                598474602406721, 1468128276358244, 1191923149557635,
+                1501376424093216, 1281662691293476
+#else
+                34956097, 8917966, 6661220, 21876816, 65916803, 17761038,
+                7251488, 22372252, 24099108, 19098262
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1721138489890707, 1264336102277790, 433064545421287,
+                1359988423149466, 1561871293409447
+#else
+                5019539, 25646962, 4244126, 18840076, 40175591, 6453164,
+                47990682, 20265406, 60876967, 23273695
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                719520245587143, 393380711632345, 132350400863381,
+                1543271270810729, 1819543295798660
+#else
+                10853575, 10721687, 26480089, 5861829, 44113045, 1972174,
+                65242217, 22996533, 63745412, 27113307
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                396397949784152, 1811354474471839, 1362679985304303,
+                2117033964846756, 498041172552279
+#else
+                50106456, 5906789, 221599, 26991285, 7828207, 20305514,
+                24362660, 31546264, 53242455, 7421391
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1812471844975748, 1856491995543149, 126579494584102,
+                1036244859282620, 1975108050082550
+#else
+                8139908, 27007935, 32257645, 27663886, 30375718, 1886181,
+                45933756, 15441251, 28826358, 29431403
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                650623932407995, 1137551288410575, 2125223403615539,
+                1725658013221271, 2134892965117796
+#else
+                6267067, 9695052, 7709135, 16950835, 34239795, 31668296,
+                14795159, 25714308, 13746020, 31812384
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                522584000310195, 1241762481390450, 1743702789495384,
+                2227404127826575, 1686746002148897
+#else
+                28584883, 7787108, 60375922, 18503702, 22846040, 25983196,
+                63926927, 33190907, 4771361, 25134474
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                427904865186312, 1703211129693455, 1585368107547509,
+                1436984488744336, 761188534613978
+#else
+                24949256, 6376279, 39642383, 25379823, 48462709, 23623825,
+                33543568, 21412737, 3569626, 11342593
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                318101947455002, 248138407995851, 1481904195303927,
+                309278454311197, 1258516760217879
+#else
+                26514970, 4740088, 27912651, 3697550, 19331575, 22082093,
+                6809885, 4608608, 7325975, 18753361
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1275068538599310, 513726919533379, 349926553492294,
+                688428871968420, 1702400196000666
+#else
+                55490446, 19000001, 42787651, 7655127, 65739590, 5214311,
+                39708324, 10258389, 49462170, 25367739
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1061864036265233, 961611260325381, 321859632700838,
+                1045600629959517, 1985130202504038
+#else
+                11431185, 15823007, 26570245, 14329124, 18029990, 4796082,
+                35662685, 15580663, 9280358, 29580745
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1558816436882417, 1962896332636523, 1337709822062152,
+                1501413830776938, 294436165831932
+#else
+                66948081, 23228174, 44253547, 29249434, 46247496, 19933429,
+                34297962, 22372809, 51563772, 4387440
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                818359826554971, 1862173000996177, 626821592884859,
+                573655738872376, 1749691246745455
+#else
+                46309467, 12194511, 3937617, 27748540, 39954043, 9340369,
+                42594872, 8548136, 20617071, 26072431
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1988022651432119, 1082111498586040, 1834020786104821,
+                1454826876423687, 692929915223122
+#else
+                66170039, 29623845, 58394552, 16124717, 24603125, 27329039,
+                53333511, 21678609, 24345682, 10325460
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2146513703733331, 584788900394667, 464965657279958,
+                2183973639356127, 238371159456790
+#else
+                47253587, 31985546, 44906155, 8714033, 14007766, 6928528,
+                16318175, 32543743, 4766742, 3552007
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1129007025494441, 2197883144413266, 265142755578169,
+                971864464758890, 1983715884903702
+#else
+                45357481, 16823515, 1351762, 32751011, 63099193, 3950934,
+                3217514, 14481909, 10988822, 29559670
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1291366624493075, 381456718189114, 1711482489312444,
+                1815233647702022, 892279782992467
+#else
+                15564307, 19242862, 3101242, 5684148, 30446780, 25503076,
+                12677126, 27049089, 58813011, 13296004
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                444548969917454, 1452286453853356, 2113731441506810,
+                645188273895859, 810317625309512
+#else
+                57666574, 6624295, 36809900, 21640754, 62437882, 31497052,
+                31521203, 9614054, 37108040, 12074673
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2242724082797924, 1373354730327868, 1006520110883049,
+                2147330369940688, 1151816104883620
+#else
+                4771172, 33419193, 14290748, 20464580, 27992297, 14998318,
+                65694928, 31997715, 29832612, 17163397
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1745720200383796, 1911723143175317, 2056329390702074,
+                355227174309849, 879232794371100
+#else
+                7064884, 26013258, 47946901, 28486894, 48217594, 30641695,
+                25825241, 5293297, 39986204, 13101589
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                163723479936298, 115424889803150, 1156016391581227,
+                1894942220753364, 1970549419986329
+#else
+                64810282, 2439669, 59642254, 1719964, 39841323, 17225986,
+                32512468, 28236839, 36752793, 29363474
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                681981452362484, 267208874112496, 1374683991933094,
+                638600984916117, 646178654558546
+#else
+                37102324, 10162315, 33928688, 3981722, 50626726, 20484387,
+                14413973, 9515896, 19568978, 9628812
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                13378654854251, 106237307029567, 1944412051589651,
+                1841976767925457, 230702819835573
+#else
+                33053803, 199357, 15894591, 1583059, 27380243, 28973997,
+                49269969, 27447592, 60817077, 3437739
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                260683893467075, 854060306077237, 913639551980112,
+                4704576840123, 280254810808712
+#else
+                48129987, 3884492, 19469877, 12726490, 15913552, 13614290,
+                44147131, 70103, 7463304, 4176122
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                715374893080287, 1173334812210491, 1806524662079626,
+                1894596008000979, 398905715033393
+#else
+                39984863, 10659916, 11482427, 17484051, 12771466, 26919315,
+                34389459, 28231680, 24216881, 5944158
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                500026409727661, 1596431288195371, 1420380351989370,
+                985211561521489, 392444930785633
+#else
+                8894125, 7450974, 64444715, 23788679, 39028346, 21165316,
+                19345745, 14680796, 11632993, 5847885
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2096421546958141, 1922523000950363, 789831022876840,
+                427295144688779, 320923973161730
+#else
+                26942781, 31239115, 9129563, 28647825, 26024104, 11769399,
+                55590027, 6367193, 57381634, 4782139
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1927770723575450, 1485792977512719, 1850996108474547,
+                551696031508956, 2126047405475647
+#else
+                19916442, 28726022, 44198159, 22140040, 25606323, 27581991,
+                33253852, 8220911, 6358847, 31680575
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2112099158080148, 742570803909715, 6484558077432,
+                1951119898618916, 93090382703416
+#else
+                801428, 31472730, 16569427, 11065167, 29875704, 96627, 7908388,
+                29073952, 53570360, 1387154
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                383905201636970, 859946997631870, 855623867637644,
+                1017125780577795, 794250831877809
+#else
+                19646058, 5720633, 55692158, 12814208, 11607948, 12749789,
+                14147075, 15156355, 45242033, 11835259
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                77571826285752, 999304298101753, 487841111777762,
+                1038031143212339, 339066367948762
+#else
+                19299512, 1155910, 28703737, 14890794, 2925026, 7269399,
+                26121523, 15467869, 40548314, 5052482
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                674994775520533, 266035846330789, 826951213393478,
+                1405007746162285, 1781791018620876
+#else
+                64091413, 10058205, 1980837, 3964243, 22160966, 12322533,
+                60677741, 20936246, 12228556, 26550755
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1001412661522686, 348196197067298, 1666614366723946,
+                888424995032760, 580747687801357
+#else
+                32944382, 14922211, 44263970, 5188527, 21913450, 24834489,
+                4001464, 13238564, 60994061, 8653814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1939560076207777, 1409892634407635, 552574736069277,
+                383854338280405, 190706709864139
+#else
+                22865569, 28901697, 27603667, 21009037, 14348957, 8234005,
+                24808405, 5719875, 28483275, 2841751
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2177087163428741, 1439255351721944, 1208070840382793,
+                2230616362004769, 1396886392021913
+#else
+                50687877, 32441126, 66781144, 21446575, 21886281, 18001658,
+                65220897, 33238773, 19932057, 20815229
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                676962063230039, 1880275537148808, 2046721011602706,
+                888463247083003, 1318301552024067
+#else
+                55452759, 10087520, 58243976, 28018288, 47830290, 30498519,
+                3999227, 13239134, 62331395, 19644223
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1466980508178206, 617045217998949, 652303580573628,
+                757303753529064, 207583137376902
+#else
+                1382174, 21859713, 17266789, 9194690, 53784508, 9720080,
+                20403944, 11284705, 53095046, 3093229
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1511056752906902, 105403126891277, 493434892772846,
+                1091943425335976, 1802717338077427
+#else
+                16650902, 22516500, 66044685, 1570628, 58779118, 7352752,
+                66806440, 16271224, 43059443, 26862581
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1853982405405128, 1878664056251147, 1528011020803992,
+                1019626468153565, 1128438412189035
+#else
+                45197768, 27626490, 62497547, 27994275, 35364760, 22769138,
+                24123613, 15193618, 45456747, 16815042
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1963939888391106, 293456433791664, 697897559513649,
+                985882796904380, 796244541237972
+#else
+                57172930, 29264984, 41829040, 4372841, 2087473, 10399484,
+                31870908, 14690798, 17361620, 11864968
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                416770998629779, 389655552427054, 1314476859406756,
+                1749382513022778, 1161905598739491
+#else
+                55801235, 6210371, 13206574, 5806320, 38091172, 19587231,
+                54777658, 26067830, 41530403, 17313742
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1428358296490651, 1027115282420478, 304840698058337,
+                441410174026628, 1819358356278573
+#else
+                14668443, 21284197, 26039038, 15305210, 25515617, 4542480,
+                10453892, 6577524, 9145645, 27110552
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                204943430200135, 1554861433819175, 216426658514651,
+                264149070665950, 2047097371738319
+#else
+                5974855, 3053895, 57675815, 23169240, 35243739, 3225008,
+                59136222, 3936127, 61456591, 30504127
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1934415182909034, 1393285083565062, 516409331772960,
+                1157690734993892, 121039666594268
+#else
+                30625386, 28825032, 41552902, 20761565, 46624288, 7695098,
+                17097188, 17250936, 39109084, 1803631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                662035583584445, 286736105093098, 1131773000510616,
+                818494214211439, 472943792054479
+#else
+                63555773, 9865098, 61880298, 4272700, 61435032, 16864731,
+                14911343, 12196514, 45703375, 7047411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665784778135882, 1893179629898606, 808313193813106,
+                276797254706413, 1563426179676396
+#else
+                20093258, 9920966, 55970670, 28210574, 13161586, 12044805,
+                34252013, 4124600, 34765036, 23296865
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                945205108984232, 526277562959295, 1324180513733566,
+                1666970227868664, 153547609289173
+#else
+                46320040, 14084653, 53577151, 7842146, 19119038, 19731827,
+                4752376, 24839792, 45429205, 2288037
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2031433403516252, 203996615228162, 170487168837083,
+                981513604791390, 843573964916831
+#else
+                40289628, 30270716, 29965058, 3039786, 52635099, 2540456,
+                29457502, 14625692, 42289247, 12570231
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1476570093962618, 838514669399805, 1857930577281364,
+                2017007352225784, 317085545220047
+#else
+                66045306, 22002608, 16920317, 12494842, 1278292, 27685323,
+                45948920, 30055751, 55134159, 4724942
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1461557121912842, 1600674043318359, 2157134900399597,
+                1670641601940616, 127765583803283
+#else
+                17960970, 21778898, 62967895, 23851901, 58232301, 32143814,
+                54201480, 24894499, 37532563, 1903855
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1293543509393474, 2143624609202546, 1058361566797508,
+                214097127393994, 946888515472729
+#else
+                23134274, 19275300, 56426866, 31942495, 20684484, 15770816,
+                54119114, 3190295, 26955097, 14109738
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                357067959932916, 1290876214345711, 521245575443703,
+                1494975468601005, 800942377643885
+#else
+                15308788, 5320727, 36995055, 19235554, 22902007, 7767164,
+                29425325, 22276870, 31960941, 11934971
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                566116659100033, 820247422481740, 994464017954148,
+                327157611686365, 92591318111744
+#else
+                39713153, 8435795, 4109644, 12222639, 42480996, 14818668,
+                20638173, 4875028, 10491392, 1379718
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                617256647603209, 1652107761099439, 1857213046645471,
+                1085597175214970, 817432759830522
+#else
+                53949449, 9197840, 3875503, 24618324, 65725151, 27674630,
+                33518458, 16176658, 21432314, 12180697
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                771808161440705, 1323510426395069, 680497615846440,
+                851580615547985, 1320806384849017
+#else
+                55321537, 11500837, 13787581, 19721842, 44678184, 10140204,
+                1465425, 12689540, 56807545, 19681548
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1219260086131915, 647169006596815, 79601124759706,
+                2161724213426748, 404861897060198
+#else
+                5414091, 18168391, 46101199, 9643569, 12834970, 1186149,
+                64485948, 32212200, 26128230, 6032912
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1327968293887866, 1335500852943256, 1401587164534264,
+                558137311952440, 1551360549268902
+#else
+                40771450, 19788269, 32496024, 19900513, 17847800, 20885276,
+                3604024, 8316894, 41233830, 23117073
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                417621685193956, 1429953819744454, 396157358457099,
+                1940470778873255, 214000046234152
+#else
+                3296484, 6223048, 24680646, 21307972, 44056843, 5903204,
+                58246567, 28915267, 12376616, 3188849
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1268047918491973, 2172375426948536, 1533916099229249,
+                1761293575457130, 1590622667026765
+#else
+                29190469, 18895386, 27549112, 32370916, 3520065, 22857131,
+                32049514, 26245319, 50999629, 23702124
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1627072914981959, 2211603081280073, 1912369601616504,
+                1191770436221309, 2187309757525860
+#else
+                52364359, 24245275, 735817, 32955454, 46701176, 28496527,
+                25246077, 17758763, 18640740, 32593455
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1149147819689533, 378692712667677, 828475842424202,
+                2218619146419342, 70688125792186
+#else
+                60180029, 17123636, 10361373, 5642961, 4910474, 12345252,
+                35470478, 33060001, 10530746, 1053335
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1299739417079761, 1438616663452759, 1536729078504412,
+                2053896748919838, 1008421032591246
+#else
+                37842897, 19367626, 53570647, 21437058, 47651804, 22899047,
+                35646494, 30605446, 24018830, 15026644
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2040723824657366, 399555637875075, 632543375452995,
+                872649937008051, 1235394727030233
+#else
+                44516310, 30409154, 64819587, 5953842, 53668675, 9425630,
+                25310643, 13003497, 64794073, 18408815
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2211311599327900, 2139787259888175, 938706616835350,
+                12609661139114, 2081897930719789
+#else
+                39688860, 32951110, 59064879, 31885314, 41016598, 13987818,
+                39811242, 187898, 43942445, 31022696
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1324994503390450, 336982330582631, 1183998925654177,
+                1091654665913274, 48727673971319
+#else
+                45364466, 19743956, 1844839, 5021428, 56674465, 17642958,
+                9716666, 16266922, 62038647, 726098
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1845522914617879, 1222198248335542, 150841072760134,
+                1927029069940982, 1189913404498011
+#else
+                29370903, 27500434, 7334070, 18212173, 9385286, 2247707,
+                53446902, 28714970, 30007387, 17731091
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1079559557592645, 2215338383666441, 1903569501302605,
+                49033973033940, 305703433934152
+#else
+                66172485, 16086690, 23751945, 33011114, 65941325, 28365395,
+                9137108, 730663, 9835848, 4555336
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                94653405416909, 1386121349852999, 1062130477891762,
+                36553947479274, 833669648948846
+#else
+                43732429, 1410445, 44855111, 20654817, 30867634, 15826977,
+                17693930, 544696, 55123566, 12422645
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1432015813136298, 440364795295369, 1395647062821501,
+                1976874522764578, 934452372723352
+#else
+                31117226, 21338698, 53606025, 6561946, 57231997, 20796761,
+                61990178, 29457725, 29120152, 13924425
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1296625309219774, 2068273464883862, 1858621048097805,
+                1492281814208508, 2235868981918946
+#else
+                49707966, 19321222, 19675798, 30819676, 56101901, 27695611,
+                57724924, 22236731, 7240930, 33317044
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1490330266465570, 1858795661361448, 1436241134969763,
+                294573218899647, 1208140011028933
+#else
+                35747106, 22207651, 52101416, 27698213, 44655523, 21401660,
+                1222335, 4389483, 3293637, 18002689
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1282462923712748, 741885683986255, 2027754642827561,
+                518989529541027, 1826610009555945
+#else
+                50424044, 19110186, 11038543, 11054958, 53307689, 30215898,
+                42789283, 7733546, 12796905, 27218610
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1525827120027511, 723686461809551, 1597702369236987,
+                244802101764964, 1502833890372311
+#else
+                58349431, 22736595, 41689999, 10783768, 36493307, 23807620,
+                38855524, 3647835, 3222231, 22393970
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                113622036244513, 1233740067745854, 674109952278496,
+                2114345180342965, 166764512856263
+#else
+                18606113, 1693100, 41660478, 18384159, 4112352, 10045021,
+                23603893, 31506198, 59558087, 2484984
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2041668749310338, 2184405322203901, 1633400637611036,
+                2110682505536899, 2048144390084644
+#else
+                9255298, 30423235, 54952701, 32550175, 13098012, 24339566,
+                16377219, 31451620, 47306788, 30519729
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                503058759232932, 760293024620937, 2027152777219493,
+                666858468148475, 1539184379870952
+#else
+                44379556, 7496159, 61366665, 11329248, 19991973, 30206930,
+                35390715, 9936965, 37011176, 22935634
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1916168475367211, 915626432541343, 883217071712575,
+                363427871374304, 1976029821251593
+#else
+                21878571, 28553135, 4338335, 13643897, 64071999, 13160959,
+                19708896, 5415497, 59748361, 29445138
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                678039535434506, 570587290189340, 1605302676614120,
+                2147762562875701, 1706063797091704
+#else
+                27736842, 10103576, 12500508, 8502413, 63695848, 23920873,
+                10436917, 32004156, 43449720, 25422331
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1439489648586438, 2194580753290951, 832380563557396,
+                561521973970522, 584497280718389
+#else
+                19492550, 21450067, 37426887, 32701801, 63900692, 12403436,
+                30066266, 8367329, 13243957, 8709688
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                187989455492609, 681223515948275, 1933493571072456,
+                1872921007304880, 488162364135671
+#else
+                12015105, 2801261, 28198131, 10151021, 24818120, 28811299,
+                55914672, 27908697, 5150967, 7274186
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1413466089534451, 410844090765630, 1397263346404072,
+                408227143123410, 1594561803147811
+#else
+                2831347, 21062286, 1478974, 6122054, 23825128, 20820846,
+                31097298, 6083058, 31021603, 23760822
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102170800973153, 719462588665004, 1479649438510153,
+                1097529543970028, 1302363283777685
+#else
+                64578913, 31324785, 445612, 10720828, 53259337, 22048494,
+                43601132, 16354464, 15067285, 19406725
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                942065717847195, 1069313679352961, 2007341951411051,
+                70973416446291, 1419433790163706
+#else
+                7840923, 14037873, 33744001, 15934015, 66380651, 29911725,
+                21403987, 1057586, 47729402, 21151211
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1146565545556377, 1661971299445212, 406681704748893,
+                564452436406089, 1109109865829139
+#else
+                915865, 17085158, 15608284, 24765302, 42751837, 6060029,
+                49737545, 8410996, 59888403, 16527024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2214421081775077, 1165671861210569, 1890453018796184,
+                3556249878661, 442116172656317
+#else
+                32922597, 32997445, 20336073, 17369864, 10903704, 28169945,
+                16957573, 52992, 23834301, 6588044
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                753830546620811, 1666955059895019, 1530775289309243,
+                1119987029104146, 2164156153857580
+#else
+                32752011, 11232950, 3381995, 24839566, 22652987, 22810329,
+                17159698, 16689107, 46794284, 32248439
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                615171919212796, 1523849404854568, 854560460547503,
+                2067097370290715, 1765325848586042
+#else
+                62419196, 9166775, 41398568, 22707125, 11576751, 12733943,
+                7924251, 30802151, 1976122, 26305405
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1094538949313667, 1796592198908825, 870221004284388,
+                2025558921863561, 1699010892802384
+#else
+                21251203, 16309901, 64125849, 26771309, 30810596, 12967303,
+                156041, 30183180, 12331344, 25317235
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1951351290725195, 1916457206844795, 198025184438026,
+                1909076887557595, 1938542290318919
+#else
+                8651595, 29077400, 51023227, 28557437, 13002506, 2950805,
+                29054427, 28447462, 10008135, 28886531
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1014323197538413, 869150639940606, 1756009942696599,
+                1334952557375672, 1544945379082874
+#else
+                31486061, 15114593, 52847614, 12951353, 14369431, 26166587,
+                16347320, 19892343, 8684154, 23021480
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                764055910920305, 1603590757375439, 146805246592357,
+                1843313433854297, 954279890114939
+#else
+                19443825, 11385320, 24468943, 23895364, 43189605, 2187568,
+                40845657, 27467510, 31316347, 14219878
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                80113526615750, 764536758732259, 1055139345100233,
+                469252651759390, 617897512431515
+#else
+                38514374, 1193784, 32245219, 11392485, 31092169, 15722801,
+                27146014, 6992409, 29126555, 9207390
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                74497112547268, 740094153192149, 1745254631717581,
+                727713886503130, 1283034364416928
+#else
+                32382916, 1110093, 18477781, 11028262, 39697101, 26006320,
+                62128346, 10843781, 59151264, 19118701
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                525892105991110, 1723776830270342, 1476444848991936,
+                573789489857760, 133864092632978
+#else
+                2814918, 7836403, 27519878, 25686276, 46214848, 22000742,
+                45614304, 8550129, 28346258, 1994730
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                542611720192581, 1986812262899321, 1162535242465837,
+                481498966143464, 544600533583622
+#else
+                47530565, 8085544, 53108345, 29605809, 2785837, 17323125,
+                47591912, 7174893, 22628102, 8115180
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                64123227344372, 1239927720647794, 1360722983445904,
+                222610813654661, 62429487187991
+#else
+                36703732, 955510, 55975026, 18476362, 34661776, 20276352,
+                41457285, 3317159, 57165847, 930271
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1793193323953132, 91096687857833, 70945970938921,
+                2158587638946380, 1537042406482111
+#else
+                51805164, 26720662, 28856489, 1357446, 23421993, 1057177,
+                24091212, 32165462, 44343487, 22903716
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1895854577604609, 1394895708949416, 1728548428495944,
+                1140864900240149, 563645333603061
+#else
+                44357633, 28250434, 54201256, 20785565, 51297352, 25757378,
+                52269845, 17000211, 65241845, 8398969
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                141358280486863, 91435889572504, 1087208572552643,
+                1829599652522921, 1193307020643647
+#else
+                35139535, 2106402, 62372504, 1362500, 12813763, 16200670,
+                22981545, 27263159, 18009407, 17781660
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1611230858525381, 950720175540785, 499589887488610,
+                2001656988495019, 88977313255908
+#else
+                49887941, 24009210, 39324209, 14166834, 29815394, 7444469,
+                29551787, 29827013, 19288548, 1325865
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1189080501479658, 2184348804772597, 1040818725742319,
+                2018318290311834, 1712060030915354
+#else
+                15100138, 17718680, 43184885, 32549333, 40658671, 15509407,
+                12376730, 30075286, 33166106, 25511682
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                873966876953756, 1090638350350440, 1708559325189137,
+                672344594801910, 1320437969700239
+#else
+                20909212, 13023121, 57899112, 16251777, 61330449, 25459517,
+                12412150, 10018715, 2213263, 19676059
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1508590048271766, 1131769479776094, 101550868699323,
+                428297785557897, 561791648661744
+#else
+                32529814, 22479743, 30361438, 16864679, 57972923, 1513225,
+                22922121, 6382134, 61341936, 8371347
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                756417570499462, 237882279232602, 2136263418594016,
+                1701968045454886, 703713185137472
+#else
+                9923462, 11271500, 12616794, 3544722, 37110496, 31832805,
+                12891686, 25361300, 40665920, 10486143
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1781187809325462, 1697624151492346, 1381393690939988,
+                175194132284669, 1483054666415238
+#else
+                44511638, 26541766, 8587002, 25296571, 4084308, 20584370,
+                361725, 2610596, 43187334, 22099236
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2175517777364616, 708781536456029, 955668231122942,
+                1967557500069555, 2021208005604118
+#else
+                5408392, 32417741, 62139741, 10561667, 24145918, 14240566,
+                31319731, 29318891, 19985174, 30118346
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115135966606887, 224217372950782, 915967306279222,
+                593866251291540, 561747094208006
+#else
+                53114407, 16616820, 14549246, 3341099, 32155958, 13648976,
+                49531796, 8849296, 65030, 8370684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1443163092879439, 391875531646162, 2180847134654632,
+                464538543018753, 1594098196837178
+#else
+                58787919, 21504805, 31204562, 5839400, 46481576, 32497154,
+                47665921, 6922163, 12743482, 23753914
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                850858855888869, 319436476624586, 327807784938441,
+                740785849558761, 17128415486016
+#else
+                64747493, 12678784, 28815050, 4759974, 43215817, 4884716,
+                23783145, 11038569, 18800704, 255233
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2132756334090067, 536247820155645, 48907151276867,
+                608473197600695, 1261689545022784
+#else
+                61839187, 31780545, 13957885, 7990715, 23132995, 728773,
+                13393847, 9066957, 19258688, 18800639
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1525176236978354, 974205476721062, 293436255662638,
+                148269621098039, 137961998433963
+#else
+                64172210, 22726896, 56676774, 14516792, 63468078, 4372540,
+                35173943, 2209389, 65584811, 2055793
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121075518299410, 2071745529082111, 1265567917414828,
+                1648196578317805, 496232102750820
+#else
+                580882, 16705327, 5468415, 30871414, 36182444, 18858431,
+                59905517, 24560042, 37087844, 7394434
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                122321229299801, 1022922077493685, 2001275453369484,
+                2017441881607947, 993205880778002
+#else
+                23838809, 1822728, 51370421, 15242726, 8318092, 29821328,
+                45436683, 30062226, 62287122, 14799920
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                654925550560074, 1168810995576858, 575655959430926,
+                905758704861388, 496774564663534
+#else
+                13345610, 9759151, 3371034, 17416641, 16353038, 8577942,
+                31129804, 13496856, 58052846, 7402517
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1954109525779738, 2117022646152485, 338102630417180,
+                1194140505732026, 107881734943492
+#else
+                2286874, 29118501, 47066405, 31546095, 53412636, 5038121,
+                11006906, 17794080, 8205060, 1607563
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1714785840001267, 2036500018681589, 1876380234251966,
+                2056717182974196, 1645855254384642
+#else
+                14414067, 25552300, 3331829, 30346215, 22249150, 27960244,
+                18364660, 30647474, 30019586, 24525154
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                106431476499341, 62482972120563, 1513446655109411,
+                807258751769522, 538491469114
+#else
+                39420813, 1585952, 56333811, 931068, 37988643, 22552112,
+                52698034, 12029092, 9944378, 8024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2002850762893643, 1243624520538135, 1486040410574605,
+                2184752338181213, 378495998083531
+#else
+                4368715, 29844802, 29874199, 18531449, 46878477, 22143727,
+                50994269, 32555346, 58966475, 5640029
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                922510868424903, 1089502620807680, 402544072617374,
+                1131446598479839, 1290278588136533
+#else
+                10299591, 13746483, 11661824, 16234854, 7630238, 5998374,
+                9809887, 16859868, 15219797, 19226649
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1867998812076769, 715425053580701, 39968586461416,
+                2173068014586163, 653822651801304
+#else
+                27425505, 27835351, 3055005, 10660664, 23458024, 595578,
+                51710259, 32381236, 48766680, 9742716
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                162892278589453, 182585796682149, 75093073137630,
+                497037941226502, 133871727117371
+#else
+                6744077, 2427284, 26042789, 2720740, 66260958, 1118973,
+                32324614, 7406442, 12420155, 1994844
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1914596576579670, 1608999621851578, 1987629837704609,
+                1519655314857977, 1819193753409464
+#else
+                14012502, 28529712, 48724410, 23975962, 40623521, 29617992,
+                54075385, 22644628, 24319928, 27108099
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1949315551096831, 1069003344994464, 1939165033499916,
+                1548227205730856, 1933767655861407
+#else
+                16412671, 29047065, 10772640, 15929391, 50040076, 28895810,
+                10555944, 23070383, 37006495, 28815383
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1730519386931635, 1393284965610134, 1597143735726030,
+                416032382447158, 1429665248828629
+#else
+                22397363, 25786748, 57815702, 20761563, 17166286, 23799296,
+                39775798, 6199365, 21880021, 21303672
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                360275475604565, 547835731063078, 215360904187529,
+                596646739879007, 332709650425085
+#else
+                62825557, 5368522, 35991846, 8163388, 36785801, 3209127,
+                16557151, 8890729, 8840445, 4957760
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47602113726801, 1522314509708010, 437706261372925,
+                814035330438027, 335930650933545
+#else
+                51661137, 709326, 60189418, 22684253, 37330941, 6522331,
+                45388683, 12130071, 52312361, 5005756
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1291597595523886, 1058020588994081, 402837842324045,
+                1363323695882781, 2105763393033193
+#else
+                64994094, 19246303, 23019041, 15765735, 41839181, 6002751,
+                10183197, 20315106, 50713577, 31378319
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                109521982566564, 1715257748585139, 1112231216891516,
+                2046641005101484, 134249157157013
+#else
+                48083108, 1632004, 13466291, 25559332, 43468412, 16573536,
+                35094956, 30497327, 22208661, 2000468
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2156991030936798, 2227544497153325, 1869050094431622,
+                754875860479115, 1754242344267058
+#else
+                3065054, 32141671, 41510189, 33192999, 49425798, 27851016,
+                58944651, 11248526, 63417650, 26140247
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1846089562873800, 98894784984326, 1412430299204844,
+                171351226625762, 1100604760929008
+#else
+                10379208, 27508878, 8877318, 1473647, 37817580, 21046851,
+                16690914, 2553332, 63976176, 16400288
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                84172382130492, 499710970700046, 425749630620778,
+                1762872794206857, 612842602127960
+#else
+                15716668, 1254266, 48636174, 7446273, 58659946, 6344163,
+                45011593, 26268851, 26894936, 9132066
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                868309334532756, 1703010512741873, 1952690008738057,
+                4325269926064, 2071083554962116
+#else
+                24158868, 12938817, 11085297, 25376834, 39045385, 29097348,
+                36532400, 64451, 60291780, 30861549
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                523094549451158, 401938899487815, 1407690589076010,
+                2022387426254453, 158660516411257
+#else
+                13488534, 7794716, 22236231, 5989356, 25426474, 20976224,
+                2350709, 30135921, 62420857, 2364225
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                612867287630009, 448212612103814, 571629077419196,
+                1466796750919376, 1728478129663858
+#else
+                16335033, 9132434, 25640582, 6678888, 1725628, 8517937,
+                55301840, 21856974, 15445874, 25756331
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1723848973783452, 2208822520534681, 1718748322776940,
+                1974268454121942, 1194212502258141
+#else
+                29004188, 25687351, 28661401, 32914020, 54314860, 25611345,
+                31863254, 29418892, 66830813, 17795152
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1254114807944608, 977770684047110, 2010756238954993,
+                1783628927194099, 1525962994408256
+#else
+                60986784, 18687766, 38493958, 14569918, 56250865, 29962602,
+                10343411, 26578142, 37280576, 22738620
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                232464058235826, 1948628555342434, 1835348780427694,
+                1031609499437291, 64472106918373
+#else
+                27081650, 3463984, 14099042, 29036828, 1616302, 27348828,
+                29542635, 15372179, 17293797, 960709
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                767338676040683, 754089548318405, 1523192045639075,
+                435746025122062, 512692508440385
+#else
+                20263915, 11434237, 61343429, 11236809, 13505955, 22697330,
+                50997518, 6493121, 47724353, 7639713
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1255955808701983, 1700487367990941, 1166401238800299,
+                1175121994891534, 1190934801395380
+#else
+                64278047, 18715199, 25403037, 25339236, 58791851, 17380732,
+                18006286, 17510682, 29994676, 17746311
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                349144008168292, 1337012557669162, 1475912332999108,
+                1321618454900458, 47611291904320
+#else
+                9769828, 5202651, 42951466, 19923039, 39057860, 21992807,
+                42495722, 19693649, 35924288, 709463
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                877519947135419, 2172838026132651, 272304391224129,
+                1655143327559984, 886229406429814
+#else
+                12286395, 13076066, 45333675, 32377809, 42105665, 4057651,
+                35090736, 24663557, 16102006, 13205847
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                375806028254706, 214463229793940, 572906353144089,
+                572168269875638, 697556386112979
+#else
+                13733362, 5599946, 10557076, 3195751, 61550873, 8536969,
+                41568694, 8525971, 10151379, 10394400
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1168827102357844, 823864273033637, 2071538752104697,
+                788062026895924, 599578340743362
+#else
+                4024660, 17416881, 22436261, 12276534, 58009849, 30868332,
+                19698228, 11743039, 33806530, 8934413
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1948116082078088, 2054898304487796, 2204939184983900,
+                210526805152138, 786593586607626
+#else
+                51229064, 29029191, 58528116, 30620370, 14634844, 32856154,
+                57659786, 3137093, 55571978, 11721157
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1915320147894736, 156481169009469, 655050471180417,
+                592917090415421, 2165897438660879
+#else
+                17555920, 28540494, 8268605, 2331751, 44370049, 9761012,
+                9319229, 8835153, 57903375, 32274386
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1726336468579724, 1119932070398949, 1929199510967666,
+                33918788322959, 1836837863503150
+#else
+                66647436, 25724417, 20614117, 16688288, 59594098, 28747312,
+                22300303, 505429, 6108462, 27371017
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                829996854845988, 217061778005138, 1686565909803640,
+                1346948817219846, 1723823550730181
+#else
+                62038564, 12367916, 36445330, 3234472, 32617080, 25131790,
+                29880582, 20071101, 40210373, 25686972
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                384301494966394, 687038900403062, 2211195391021739,
+                254684538421383, 1245698430589680
+#else
+                35133562, 5726538, 26934134, 10237677, 63935147, 32949378,
+                24199303, 3795095, 7592688, 18562353
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1247567493562688, 1978182094455847, 183871474792955,
+                806570235643435, 288461518067916
+#else
+                21594432, 18590204, 17466407, 29477210, 32537083, 2739898,
+                6407723, 12018833, 38852812, 4298411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1449077384734201, 38285445457996, 2136537659177832,
+                2146493000841573, 725161151123125
+#else
+                46458361, 21592935, 39872588, 570497, 3767144, 31836892,
+                13891941, 31985238, 13717173, 10805743
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1201928866368855, 800415690605445, 1703146756828343,
+                997278587541744, 1858284414104014
+#else
+                52432215, 17910135, 15287173, 11927123, 24177847, 25378864,
+                66312432, 14860608, 40169934, 27690595
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                356468809648877, 782373916933152, 1718002439402870,
+                1392222252219254, 663171266061951
+#else
+                12962541, 5311799, 57048096, 11658279, 18855286, 25600231,
+                13286262, 20745728, 62727807, 9882021
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                759628738230460, 1012693474275852, 353780233086498,
+                246080061387552, 2030378857679162
+#else
+                18512060, 11319350, 46985740, 15090308, 18818594, 5271736,
+                44380960, 3666878, 43141434, 30255002
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2040672435071076, 888593182036908, 1298443657189359,
+                1804780278521327, 354070726137060
+#else
+                60319844, 30408388, 16192428, 13241070, 15898607, 19348318,
+                57023983, 26893321, 64705764, 5276064
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1894938527423184, 1463213041477277, 474410505497651,
+                247294963033299, 877975941029128
+#else
+                30169808, 28236784, 26306205, 21803573, 27814963, 7069267,
+                7152851, 3684982, 1449224, 13082861
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                207937160991127, 12966911039119, 820997788283092,
+                1010440472205286, 1701372890140810
+#else
+                10342807, 3098505, 2119311, 193222, 25702612, 12233820,
+                23697382, 15056736, 46092426, 25352431
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                218882774543183, 533427444716285, 1233243976733245,
+                435054256891319, 1509568989549904
+#else
+                33958735, 3261607, 22745853, 7948688, 19370557, 18376767,
+                40936887, 6482813, 56808784, 22494330
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1888838535711826, 1052177758340622, 1213553803324135,
+                169182009127332, 463374268115872
+#else
+                32869458, 28145887, 25609742, 15678670, 56421095, 18083360,
+                26112420, 2521008, 44444576, 6904814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                299137589460312, 1594371588983567, 868058494039073,
+                257771590636681, 1805012993142921
+#else
+                29506904, 4457497, 3377935, 23757988, 36598817, 12935079,
+                1561737, 3841096, 38105225, 26896789
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1806842755664364, 2098896946025095, 1356630998422878,
+                1458279806348064, 347755825962072
+#else
+                10340844, 26924055, 48452231, 31276001, 12621150, 20215377,
+                30878496, 21730062, 41524312, 5181965
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1402334161391744, 1560083671046299, 1008585416617747,
+                1147797150908892, 1420416683642459
+#else
+                25940096, 20896407, 17324187, 23247058, 58437395, 15029093,
+                24396252, 17103510, 64786011, 21165857
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665506704253369, 273770475169863, 799236974202630,
+                848328990077558, 1811448782807931
+#else
+                45343161, 9916822, 65808455, 4079497, 66080518, 11909558,
+                1782390, 12641087, 20603771, 26992690
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1468412523962641, 771866649897997, 1931766110147832,
+                799561180078482, 524837559150077
+#else
+                48226577, 21881051, 24849421, 11501709, 13161720, 28785558,
+                1925522, 11914390, 4662781, 7820689
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2223212657821850, 630416247363666, 2144451165500328,
+                816911130947791, 1024351058410032
+#else
+                12241050, 33128450, 8132690, 9393934, 32846760, 31954812,
+                29749455, 12172924, 16136752, 15264020
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1266603897524861, 156378408858100, 1275649024228779,
+                447738405888420, 253186462063095
+#else
+                56758909, 18873868, 58896884, 2330219, 49446315, 19008651,
+                10658212, 6671822, 19012087, 3772772
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022215964509735, 136144366993649, 1800716593296582,
+                1193970603800203, 871675847064218
+#else
+                3753511, 30133366, 10617073, 2028709, 14841030, 26832768,
+                28718731, 17791548, 20527770, 12988982
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1862751661970328, 851596246739884, 1519315554814041,
+                1542798466547449, 1417975335901520
+#else
+                52286360, 27757162, 63400876, 12689772, 66209881, 22639565,
+                42925817, 22989488, 3299664, 21129479
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1228168094547481, 334133883362894, 587567568420081,
+                433612590281181, 603390400373205
+#else
+                50331161, 18301130, 57466446, 4978982, 3308785, 8755439,
+                6943197, 6461331, 41525717, 8991217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                121893973206505, 1843345804916664, 1703118377384911,
+                497810164760654, 101150811654673
+#else
+                49882601, 1816361, 65435576, 27467992, 31783887, 25378441,
+                34160718, 7417949, 36866577, 1507264
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                458346255946468, 290909935619344, 1452768413850679,
+                550922875254215, 1537286854336538
+#else
+                29692644, 6829891, 56610064, 4334895, 20945975, 21647936,
+                38221255, 8209390, 14606362, 22907359
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                584322311184395, 380661238802118, 114839394528060,
+                655082270500073, 2111856026034852
+#else
+                63627275, 8707080, 32188102, 5672294, 22096700, 1711240,
+                34088169, 9761486, 4170404, 31469107
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996965581008991, 2148998626477022, 1012273164934654,
+                1073876063914522, 1688031788934939
+#else
+                55521375, 14855944, 62981086, 32022574, 40459774, 15084045,
+                22186522, 16002000, 52832027, 25153633
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                923487018849600, 2085106799623355, 528082801620136,
+                1606206360876188, 735907091712524
+#else
+                62297408, 13761028, 35404987, 31070512, 63796392, 7869046,
+                59995292, 23934339, 13240844, 10965870
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1697697887804317, 1335343703828273, 831288615207040,
+                949416685250051, 288760277392022
+#else
+                59366301, 25297669, 52340529, 19898171, 43876480, 12387165,
+                4498947, 14147411, 29514390, 4302863
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1419122478109648, 1325574567803701, 602393874111094,
+                2107893372601700, 1314159682671307
+#else
+                53695440, 21146572, 20757301, 19752600, 14785142, 8976368,
+                62047588, 31410058, 17846987, 19582505
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2201150872731804, 2180241023425241, 97663456423163,
+                1633405770247824, 848945042443986
+#else
+                64864412, 32799703, 62511833, 32488122, 60861691, 1455298,
+                45461136, 24339642, 61886162, 12650266
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1173339555550611, 818605084277583, 47521504364289,
+                924108720564965, 735423405754506
+#else
+                57202067, 17484121, 21134159, 12198166, 40044289, 708125,
+                387813, 13770293, 47974538, 10958662
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                830104860549448, 1886653193241086, 1600929509383773,
+                1475051275443631, 286679780900937
+#else
+                22470984, 12369526, 23446014, 28113323, 45588061, 23855708,
+                55336367, 21979976, 42025033, 4271861
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1577111294832995, 1030899169768747, 144900916293530,
+                1964672592979567, 568390100955250
+#else
+                41939299, 23500789, 47199531, 15361594, 61124506, 2159191,
+                75375, 29275903, 34582642, 8469672
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                278388655910247, 487143369099838, 927762205508727,
+                181017540174210, 1616886700741287
+#else
+                15854951, 4148314, 58214974, 7259001, 11666551, 13824734,
+                36577666, 2697371, 24154791, 24093489
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1191033906638969, 940823957346562, 1606870843663445,
+                861684761499847, 658674867251089
+#else
+                15446137, 17747788, 29759746, 14019369, 30811221, 23944241,
+                35526855, 12840103, 24913809, 9815020
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1875032594195546, 1427106132796197, 724736390962158,
+                901860512044740, 635268497268760
+#else
+                62399578, 27940162, 35267365, 21265538, 52665326, 10799413,
+                58005188, 13438768, 18735128, 9466238
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622869792298357, 1903919278950367, 1922588621661629,
+                1520574711600434, 1087100760174640
+#else
+                11933045, 9281483, 5081055, 28370608, 64480701, 28648802,
+                59381042, 22658328, 44380208, 16199063
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                25465949416618, 1693639527318811, 1526153382657203,
+                125943137857169, 145276964043999
+#else
+                14576810, 379472, 40322331, 25237195, 37682355, 22741457,
+                67006097, 1876698, 30801119, 2164795
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                214739857969358, 920212862967915, 1939901550972269,
+                1211862791775221, 85097515720120
+#else
+                15995086, 3199873, 13672555, 13712240, 47730029, 28906785,
+                54027253, 18058162, 53616056, 1268051
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2006245852772938, 734762734836159, 254642929763427,
+                1406213292755966, 239303749517686
+#else
+                56818250, 29895392, 63822271, 10948817, 23037027, 3794475,
+                63638526, 20954210, 50053494, 3565903
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1619678837192149, 1919424032779215, 1357391272956794,
+                1525634040073113, 1310226789796241
+#else
+                29210069, 24135095, 61189071, 28601646, 10834810, 20226706,
+                50596761, 22733718, 39946641, 19523900
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1040763709762123, 1704449869235352, 605263070456329,
+                1998838089036355, 1312142911487502
+#else
+                53946955, 15508587, 16663704, 25398282, 38758921, 9019122,
+                37925443, 29785008, 2244110, 19552453
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1996723311435669, 1844342766567060, 985455700466044,
+                1165924681400960, 311508689870129
+#else
+                61955989, 29753495, 57802388, 27482848, 16243068, 14684434,
+                41435776, 17373631, 13491505, 4641841
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                43173156290518, 2202883069785309, 1137787467085917,
+                1733636061944606, 1394992037553852
+#else
+                10813398, 643330, 47920349, 32825515, 30292061, 16954354,
+                27548446, 25833190, 14476988, 20787001
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                670078326344559, 555655025059356, 471959386282438,
+                2141455487356409, 849015953823125
+#else
+                10292079, 9984945, 6481436, 8279905, 59857350, 7032742,
+                27282937, 31910173, 39196053, 12651323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2197214573372804, 794254097241315, 1030190060513737,
+                267632515541902, 2040478049202624
+#else
+                35923332, 32741048, 22271203, 11835308, 10201545, 15351028,
+                17099662, 3988035, 21721536, 30405492
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1812516004670529, 1609256702920783, 1706897079364493,
+                258549904773295, 996051247540686
+#else
+                10202177, 27008593, 35735631, 23979793, 34958221, 25434748,
+                54202543, 3852693, 13216206, 14842320
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1540374301420584, 1764656898914615, 1810104162020396,
+                923808779163088, 664390074196579
+#else
+                51293224, 22953365, 60569911, 26295436, 60124204, 26972653,
+                35608016, 13765823, 39674467, 9900183
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1323460699404750, 1262690757880991, 871777133477900,
+                1060078894988977, 1712236889662886
+#else
+                14465486, 19721101, 34974879, 18815558, 39665676, 12990491,
+                33046193, 15796406, 60056998, 25514317
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1696163952057966, 1391710137550823, 608793846867416,
+                1034391509472039, 1780770894075012
+#else
+                30924398, 25274812, 6359015, 20738097, 16508376, 9071735,
+                41620263, 15413634, 9524356, 26535554
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1367603834210841, 2131988646583224, 890353773628144,
+                1908908219165595, 270836895252891
+#else
+                12274201, 20378885, 32627640, 31769106, 6736624, 13267305,
+                5237659, 28444949, 15663515, 4035784
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                597536315471731, 40375058742586, 1942256403956049,
+                1185484645495932, 312666282024145
+#else
+                64157555, 8903984, 17349946, 601635, 50676049, 28941875,
+                53376124, 17665097, 44850385, 4659090
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1919411405316294, 1234508526402192, 1066863051997083,
+                1008444703737597, 1348810787701552
+#else
+                50192582, 28601458, 36715152, 18395610, 20774811, 15897498,
+                5736189, 15026997, 64930608, 20098846
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102881477513865, 1570274565945361, 1573617900503708,
+                18662635732583, 2232324307922098
+#else
+                58249865, 31335375, 28571665, 23398914, 66634396, 23448733,
+                63307367, 278094, 23440562, 33264224
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1853931367696942, 8107973870707, 350214504129299,
+                775206934582587, 1752317649166792
+#else
+                10226222, 27625730, 15139955, 120818, 52241171, 5218602,
+                32937275, 11551483, 50536904, 26111567
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1417148368003523, 721357181628282, 505725498207811,
+                373232277872983, 261634707184480
+#else
+                17932739, 21117156, 43069306, 10749059, 11316803, 7535897,
+                22503767, 5561594, 63462240, 3898660
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2186733281493267, 2250694917008620, 1014829812957440,
+                479998161452389, 83566193876474
+#else
+                7749907, 32584865, 50769132, 33537967, 42090752, 15122142,
+                65535333, 7152529, 21831162, 1245233
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1268116367301224, 560157088142809, 802626839600444,
+                2210189936605713, 1129993785579988
+#else
+                26958440, 18896406, 4314585, 8346991, 61431100, 11960071,
+                34519569, 32934396, 36706772, 16838219
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                615183387352312, 917611676109240, 878893615973325,
+                978940963313282, 938686890583575
+#else
+                54942968, 9166946, 33491384, 13673479, 29787085, 13096535,
+                6280834, 14587357, 44770839, 13987524
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                522024729211672, 1045059315315808, 1892245413707790,
+                1907891107684253, 2059998109500714
+#else
+                42758936, 7778774, 21116000, 15572597, 62275598, 28196653,
+                62807965, 28429792, 59639082, 30696363
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1799679152208884, 912132775900387, 25967768040979,
+                432130448590461, 274568990261996
+#else
+                9681908, 26817309, 35157219, 13591837, 60225043, 386949,
+                31622781, 6439245, 52527852, 4091396
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                98698809797682, 2144627600856209, 1907959298569602,
+                811491302610148, 1262481774981493
+#else
+                58682418, 1470726, 38999185, 31957441, 3978626, 28430809,
+                47486180, 12092162, 29077877, 18812444
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1791451399743152, 1713538728337276, 118349997257490,
+                1882306388849954, 158235232210248
+#else
+                5269168, 26694706, 53878652, 25533716, 25932562, 1763552,
+                61502754, 28048550, 47091016, 2357888
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1217809823321928, 2173947284933160, 1986927836272325,
+                1388114931125539, 12686131160169
+#else
+                32264008, 18146780, 61721128, 32394338, 65017541, 29607531,
+                23104803, 20684524, 5727337, 189038
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1650875518872272, 1136263858253897, 1732115601395988,
+                734312880662190, 1252904681142109
+#else
+                14609104, 24599962, 61108297, 16931650, 52531476, 25810533,
+                40363694, 10942114, 41219933, 18669734
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                372986456113865, 525430915458171, 2116279931702135,
+                501422713587815, 1907002872974925
+#else
+                20513481, 5557931, 51504251, 7829530, 26413943, 31535028,
+                45729895, 7471780, 13913677, 28416557
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                803147181835288, 868941437997146, 316299302989663,
+                943495589630550, 571224287904572
+#else
+                41534488, 11967825, 29233242, 12948236, 60354399, 4713226,
+                58167894, 14059179, 12878652, 8511905
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                227742695588364, 1776969298667369, 628602552821802,
+                457210915378118, 2041906378111140
+#else
+                41452044, 3393630, 64153449, 26478905, 64858154, 9366907,
+                36885446, 6812973, 5568676, 30426776
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                815000523470260, 913085688728307, 1052060118271173,
+                1345536665214223, 541623413135555
+#else
+                11630004, 12144454, 2116339, 13606037, 27378885, 15676917,
+                49700111, 20050058, 52713667, 8070817
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1580216071604333, 1877997504342444, 857147161260913,
+                703522726778478, 2182763974211603
+#else
+                27117677, 23547054, 35826092, 27984343, 1127281, 12772488,
+                37262958, 10483305, 55556115, 32525717
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1870080310923419, 71988220958492, 1783225432016732,
+                615915287105016, 1035570475990230
+#else
+                10637467, 27866368, 5674780, 1072708, 40765276, 26572129,
+                65424888, 9177852, 39615702, 15431202
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                730987750830150, 857613889540280, 1083813157271766,
+                1002817255970169, 1719228484436074
+#else
+                20525126, 10892566, 54366392, 12779442, 37615830, 16150074,
+                38868345, 14943141, 52052074, 25618500
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                377616581647602, 1581980403078513, 804044118130621,
+                2034382823044191, 643844048472185
+#else
+                37084402, 5626925, 66557297, 23573344, 753597, 11981191,
+                25244767, 30314666, 63752313, 9594023
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                176957326463017, 1573744060478586, 528642225008045,
+                1816109618372371, 1515140189765006
+#else
+                43356201, 2636869, 61944954, 23450613, 585133, 7877383,
+                11345683, 27062142, 13352334, 22577348
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1888911448245718, 1387110895611080, 1924503794066429,
+                1731539523700949, 2230378382645454
+#else
+                65177046, 28146973, 3304648, 20669563, 17015805, 28677341,
+                37325013, 25801949, 53893326, 33235227
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                443392177002051, 233793396845137, 2199506622312416,
+                1011858706515937, 974676837063129
+#else
+                20239939, 6607058, 6203985, 3483793, 48721888, 32775202,
+                46385121, 15077869, 44358105, 14523816
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1846351103143623, 1949984838808427, 671247021915253,
+                1946756846184401, 1929296930380217
+#else
+                27406023, 27512775, 27423595, 29057038, 4996213, 10002360,
+                38266833, 29008937, 36936121, 28748764
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                849646212452002, 1410198775302919, 73767886183695,
+                1641663456615812, 762256272452411
+#else
+                11374242, 12660715, 17861383, 21013599, 10935567, 1099227,
+                53222788, 24462691, 39381819, 11358503
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                692017667358279, 723305578826727, 1638042139863265,
+                748219305990306, 334589200523901
+#else
+                54378055, 10311866, 1510375, 10778093, 64989409, 24408729,
+                32676002, 11149336, 40985213, 4985767
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                22893968530686, 2235758574399251, 1661465835630252,
+                925707319443452, 1203475116966621
+#else
+                48012542, 341146, 60911379, 33315398, 15756972, 24757770,
+                66125820, 13794113, 47694557, 17933176
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                801299035785166, 1733292596726131, 1664508947088596,
+                467749120991922, 1647498584535623
+#else
+                6490062, 11940286, 25495923, 25828072, 8668372, 24803116,
+                3367602, 6970005, 65417799, 24549641
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                903105258014366, 427141894933047, 561187017169777,
+                1884330244401954, 1914145708422219
+#else
+                1656478, 13457317, 15370807, 6364910, 13605745, 8362338,
+                47934242, 28078708, 50312267, 28522993
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1344191060517578, 1960935031767890, 1518838929955259,
+                1781502350597190, 1564784025565682
+#else
+                44835530, 20030007, 67044178, 29220208, 48503227, 22632463,
+                46537798, 26546453, 67009010, 23317098
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                673723351748086, 1979969272514923, 1175287312495508,
+                1187589090978666, 1881897672213940
+#else
+                17747446, 10039260, 19368299, 29503841, 46478228, 17513145,
+                31992682, 17696456, 37848500, 28042460
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1917185587363432, 1098342571752737, 5935801044414,
+                2000527662351839, 1538640296181569
+#else
+                31932008, 28568291, 47496481, 16366579, 22023614, 88450,
+                11371999, 29810185, 4882241, 22927527
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2495540013192, 678856913479236, 224998292422872,
+                219635787698590, 1972465269000940
+#else
+                29796488, 37186, 19818052, 10115756, 55279832, 3352735,
+                18551198, 3272828, 61917932, 29392022
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                271413961212179, 1353052061471651, 344711291283483,
+                2014925838520662, 2006221033113941
+#else
+                12501267, 4044383, 58495907, 20162046, 34678811, 5136598,
+                47878486, 30024734, 330069, 29895023
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                194583029968109, 514316781467765, 829677956235672,
+                1676415686873082, 810104584395840
+#else
+                6384877, 2899513, 17807477, 7663917, 64749976, 12363164,
+                25366522, 24980540, 66837568, 12071498
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1980510813313589, 1948645276483975, 152063780665900,
+                129968026417582, 256984195613935
+#else
+                58743349, 29511910, 25133447, 29037077, 60897836, 2265926,
+                34339246, 1936674, 61949167, 3829362
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1860190562533102, 1936576191345085, 461100292705964,
+                1811043097042830, 957486749306835
+#else
+                28425966, 27718999, 66531773, 28857233, 52891308, 6870929,
+                7921550, 26986645, 26333139, 14267664
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                796664815624365, 1543160838872951, 1500897791837765,
+                1667315977988401, 599303877030711
+#else
+                56041645, 11871230, 27385719, 22994888, 62522949, 22365119,
+                10004785, 24844944, 45347639, 8930323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1151480509533204, 2136010406720455, 738796060240027,
+                319298003765044, 1150614464349587
+#else
+                45911060, 17158396, 25654215, 31829035, 12282011, 11008919,
+                1541940, 4757911, 40617363, 17145491
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1731069268103150, 735642447616087, 1364750481334268,
+                417232839982871, 927108269127661
+#else
+                13537262, 25794942, 46504023, 10961926, 61186044, 20336366,
+                53952279, 6217253, 51165165, 13814989
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1017222050227968, 1987716148359, 2234319589635701,
+                621282683093392, 2132553131763026
+#else
+                49686272, 15157789, 18705543, 29619, 24409717, 33293956,
+                27361680, 9257833, 65152338, 31777517
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1567828528453324, 1017807205202360, 565295260895298,
+                829541698429100, 307243822276582
+#else
+                42063564, 23362465, 15366584, 15166509, 54003778, 8423555,
+                37937324, 12361134, 48422886, 4578289
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                249079270936248, 1501514259790706, 947909724204848,
+                944551802437487, 552658763982480
+#else
+                24579768, 3711570, 1342322, 22374306, 40103728, 14124955,
+                44564335, 14074918, 21964432, 8235257
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2089966982947227, 1854140343916181, 2151980759220007,
+                2139781292261749, 158070445864917
+#else
+                60580251, 31142934, 9442965, 27628844, 12025639, 32067012,
+                64127349, 31885225, 13006805, 2355433
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1338766321464554, 1906702607371284, 1519569445519894,
+                115384726262267, 1393058953390992
+#else
+                50803946, 19949172, 60476436, 28412082, 16974358, 22643349,
+                27202043, 1719366, 1141648, 20758196
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1364621558265400, 1512388234908357, 1926731583198686,
+                2041482526432505, 920401122333774
+#else
+                54244920, 20334445, 58790597, 22536340, 60298718, 28710537,
+                13475065, 30420460, 32674894, 13715045
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1884844597333588, 601480070269079, 620203503079537,
+                1079527400117915, 1202076693132015
+#else
+                11423316, 28086373, 32344215, 8962751, 24989809, 9241752,
+                53843611, 16086211, 38367983, 17912338
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                840922919763324, 727955812569642, 1303406629750194,
+                522898432152867, 294161410441865
+#else
+                65699196, 12530727, 60740138, 10847386, 19531186, 19422272,
+                55399715, 7791793, 39862921, 4383346
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                353760790835310, 1598361541848743, 1122905698202299,
+                1922533590158905, 419107700666580
+#else
+                38137966, 5271446, 65842855, 23817442, 54653627, 16732598,
+                62246457, 28647982, 27193556, 6245191
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                359856369838236, 180914355488683, 861726472646627,
+                218807937262986, 575626773232501
+#else
+                51914908, 5362277, 65324971, 2695833, 4960227, 12840725,
+                23061898, 3260492, 22510453, 8577507
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                755467689082474, 909202735047934, 730078068932500,
+                936309075711518, 2007798262842972
+#else
+                54476394, 11257345, 34415870, 13548176, 66387860, 10879010,
+                31168030, 13952092, 37537372, 29918525
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1609384177904073, 362745185608627, 1335318541768201,
+                800965770436248, 547877979267412
+#else
+                3877321, 23981693, 32416691, 5405324, 56104457, 19897796,
+                3759768, 11935320, 5611860, 8164018
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                984339177776787, 815727786505884, 1645154585713747,
+                1659074964378553, 1686601651984156
+#else
+                50833043, 14667796, 15906460, 12155291, 44997715, 24514713,
+                32003001, 24722143, 5773084, 25132323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1697863093781930, 599794399429786, 1104556219769607,
+                830560774794755, 12812858601017
+#else
+                43320746, 25300131, 1950874, 8937633, 18686727, 16459170,
+                66203139, 12376319, 31632953, 190926
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1168737550514982, 897832437380552, 463140296333799,
+                302564600022547, 2008360505135501
+#else
+                42515238, 17415546, 58684872, 13378745, 14162407, 6901328,
+                58820115, 4508563, 41767309, 29926903
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1856930662813910, 678090852002597, 1920179140755167,
+                1259527833759868, 55540971895511
+#else
+                8884438, 27670423, 6023973, 10104341, 60227295, 28612898,
+                18722940, 18768427, 65436375, 827624
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1158643631044921, 476554103621892, 178447851439725,
+                1305025542653569, 103433927680625
+#else
+                34388281, 17265135, 34605316, 7101209, 13354605, 2659080,
+                65308289, 19446395, 42230385, 1541285
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2176793111709008, 1576725716350391, 2009350167273523,
+                2012390194631546, 2125297410909580
+#else
+                2901328, 32436745, 3880375, 23495044, 49487923, 29941650,
+                45306746, 29986950, 20456844, 31669399
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                825403285195098, 2144208587560784, 1925552004644643,
+                1915177840006985, 1015952128947864
+#else
+                27019610, 12299467, 53450576, 31951197, 54247203, 28692960,
+                47568713, 28538373, 29439640, 15138866
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1807108316634472, 1534392066433717, 347342975407218,
+                1153820745616376, 7375003497471
+#else
+                21536104, 26928012, 34661045, 22864223, 44700786, 5175813,
+                61688824, 17193268, 7779327, 109896
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                983061001799725, 431211889901241, 2201903782961093,
+                817393911064341, 2214616493042167
+#else
+                30279725, 14648750, 59063993, 6425557, 13639621, 32810923,
+                28698389, 12180118, 23177719, 33000357
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                228567918409756, 865093958780220, 358083886450556,
+                159617889659320, 1360637926292598
+#else
+                26572828, 3405927, 35407164, 12890904, 47843196, 5335865,
+                60615096, 2378491, 4439158, 20275085
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                234147501399755, 2229469128637390, 2175289352258889,
+                1397401514549353, 1885288963089922
+#else
+                44392139, 3489069, 57883598, 33221678, 18875721, 32414337,
+                14819433, 20822905, 49391106, 28092994
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1111762412951562, 252849572507389, 1048714233823341,
+                146111095601446, 1237505378776770
+#else
+                62052362, 16566550, 15953661, 3767752, 56672365, 15627059,
+                66287910, 2177224, 8550082, 18440267
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1113790697840279, 1051167139966244, 1045930658550944,
+                2011366241542643, 1686166824620755
+#else
+                48635543, 16596774, 66727204, 15663610, 22860960, 15585581,
+                39264755, 29971692, 43848403, 25125843
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1054097349305049, 1872495070333352, 182121071220717,
+                1064378906787311, 100273572924182
+#else
+                34628313, 15707274, 58902952, 27902350, 29464557, 2713815,
+                44383727, 15860481, 45206294, 1494192
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1306410853171605, 1627717417672447, 50983221088417,
+                1109249951172250, 870201789081392
+#else
+                47546773, 19467038, 41524991, 24254879, 13127841, 759709,
+                21923482, 16529112, 8742704, 12967017
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                104233794644221, 1548919791188248, 2224541913267306,
+                2054909377116478, 1043803389015153
+#else
+                38643965, 1553204, 32536856, 23080703, 42417258, 33148257,
+                58194238, 30620535, 37205105, 15553882
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                216762189468802, 707284285441622, 190678557969733,
+                973969342604308, 1403009538434867
+#else
+                21877890, 3230008, 9881174, 10539357, 62311749, 2841331,
+                11543572, 14513274, 19375923, 20906471
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1279024291038477, 344776835218310, 273722096017199,
+                1834200436811442, 634517197663804
+#else
+                8832269, 19058947, 13253510, 5137575, 5037871, 4078777,
+                24880818, 27331716, 2862652, 9455043
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                343805853118335, 1302216857414201, 566872543223541,
+                2051138939539004, 321428858384280
+#else
+                29306751, 5123106, 20245049, 19404543, 9592565, 8447059,
+                65031740, 30564351, 15511448, 4789663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                470067171324852, 1618629234173951, 2000092177515639,
+                7307679772789, 1117521120249968
+#else
+                46429108, 7004546, 8824831, 24119455, 63063159, 29803695,
+                61354101, 108892, 23513200, 16652362
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                278151578291475, 1810282338562947, 1771599529530998,
+                1383659409671631, 685373414471841
+#else
+                33852691, 4144781, 62632835, 26975308, 10770038, 26398890,
+                60458447, 20618131, 48789665, 10212859
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                577009397403102, 1791440261786291, 2177643735971638,
+                174546149911960, 1412505077782326
+#else
+                2756062, 8598110, 7383731, 26694540, 22312758, 32449420,
+                21179800, 2600940, 57120566, 21047965
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                893719721537457, 1201282458018197, 1522349501711173,
+                58011597740583, 1130406465887139
+#else
+                42463153, 13317461, 36659605, 17900503, 21365573, 22684775,
+                11344423, 864440, 64609187, 16844368
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                412607348255453, 1280455764199780, 2233277987330768,
+                14180080401665, 331584698417165
+#else
+                40676061, 6148328, 49924452, 19080277, 18782928, 33278435,
+                44547329, 211299, 2719757, 4940997
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                262483770854550, 990511055108216, 526885552771698,
+                571664396646158, 354086190278723
+#else
+                65784982, 3911312, 60160120, 14759764, 37081714, 7851206,
+                21690126, 8518463, 26699843, 5276295
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1820352417585487, 24495617171480, 1547899057533253,
+                10041836186225, 480457105094042
+#else
+                53958991, 27125364, 9396248, 365013, 24703301, 23065493,
+                1321585, 149635, 51656090, 7159368
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2023310314989233, 637905337525881, 2106474638900687,
+                557820711084072, 1687858215057826
+#else
+                9987761, 30149673, 17507961, 9505530, 9731535, 31388918,
+                22356008, 8312176, 22477218, 25151047
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1144168702609745, 604444390410187, 1544541121756138,
+                1925315550126027, 626401428894002
+#else
+                18155857, 17049442, 19744715, 9006923, 15154154, 23015456,
+                24256459, 28689437, 44560690, 9334108
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1922168257351784, 2018674099908659, 1776454117494445,
+                956539191509034, 36031129147635
+#else
+                2986088, 28642539, 10776627, 30080588, 10620589, 26471229,
+                45695018, 14253544, 44521715, 536905
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                544644538748041, 1039872944430374, 876750409130610,
+                710657711326551, 1216952687484972
+#else
+                4377737, 8115836, 24567078, 15495314, 11625074, 13064599,
+                7390551, 10589625, 10838060, 18134008
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                58242421545916, 2035812695641843, 2118491866122923,
+                1191684463816273, 46921517454099
+#else
+                47766460, 867879, 9277171, 30335973, 52677291, 31567988,
+                19295825, 17757482, 6378259, 699185
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                272268252444639, 1374166457774292, 2230115177009552,
+                1053149803909880, 1354288411641016
+#else
+                7895007, 4057113, 60027092, 20476675, 49222032, 33231305,
+                66392824, 15693154, 62063800, 20180469
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1857910905368338, 1754729879288912, 885945464109877,
+                1516096106802166, 1602902393369811
+#else
+                59371282, 27685029, 52542544, 26147512, 11385653, 13201616,
+                31730678, 22591592, 63190227, 23885106
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1193437069800958, 901107149704790, 999672920611411,
+                477584824802207, 364239578697845
+#else
+                10188286, 17783598, 59772502, 13427542, 22223443, 14896287,
+                30743455, 7116568, 45322357, 5427592
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                886299989548838, 1538292895758047, 1590564179491896,
+                1944527126709657, 837344427345298
+#else
+                696102, 13206899, 27047647, 22922350, 15285304, 23701253,
+                10798489, 28975712, 19236242, 12477404
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                754558365378305, 1712186480903618, 1703656826337531,
+                750310918489786, 518996040250900
+#else
+                55879425, 11243795, 50054594, 25513566, 66320635, 25386464,
+                63211194, 11180503, 43939348, 7733643
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1309847803895382, 1462151862813074, 211370866671570,
+                1544595152703681, 1027691798954090
+#else
+                17800790, 19518253, 40108434, 21787760, 23887826, 3149671,
+                23466177, 23016261, 10322026, 15313801
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                803217563745370, 1884799722343599, 1357706345069218,
+                2244955901722095, 730869460037413
+#else
+                26246234, 11968874, 32263343, 28085704, 6830754, 20231401,
+                51314159, 33452449, 42659621, 10890803
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                689299471295966, 1831210565161071, 1375187341585438,
+                1106284977546171, 1893781834054269
+#else
+                35743198, 10271362, 54448239, 27287163, 16690206, 20491888,
+                52126651, 16484930, 25180797, 28219548
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                696351368613042, 1494385251239250, 738037133616932,
+                636385507851544, 927483222611406
+#else
+                66522290, 10376443, 34522450, 22268075, 19801892, 10997610,
+                2276632, 9482883, 316878, 13820577
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1949114198209333, 1104419699537997, 783495707664463,
+                1747473107602770, 2002634765788641
+#else
+                57226037, 29044064, 64993357, 16457135, 56008783, 11674995,
+                30756178, 26039378, 30696929, 29841583
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1607325776830197, 530883941415333, 1451089452727895,
+                1581691157083423, 496100432831154
+#else
+                32988917, 23951020, 12499365, 7910787, 56491607, 21622917,
+                59766047, 23569034, 34759346, 7392472
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1068900648804224, 2006891997072550, 1134049269345549,
+                1638760646180091, 2055396084625778
+#else
+                58253184, 15927860, 9866406, 29905021, 64711949, 16898650,
+                36699387, 24419436, 25112946, 30627788
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2222475519314561, 1870703901472013, 1884051508440561,
+                1344072275216753, 1318025677799069
+#else
+                64604801, 33117465, 25621773, 27875660, 15085041, 28074555,
+                42223985, 20028237, 5537437, 19640113
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                155711679280656, 681100400509288, 389811735211209,
+                2135723811340709, 408733211204125
+#else
+                55883280, 2320284, 57524584, 10149186, 33664201, 5808647,
+                52232613, 31824764, 31234589, 6090599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                7813206966729, 194444201427550, 2071405409526507,
+                1065605076176312, 1645486789731291
+#else
+                57475529, 116425, 26083934, 2897444, 60744427, 30866345, 609720,
+                15878753, 60138459, 24519663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                16625790644959, 1647648827778410, 1579910185572704,
+                436452271048548, 121070048451050
+#else
+                39351007, 247743, 51914090, 24551880, 23288160, 23542496,
+                43239268, 6503645, 20650474, 1804084
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1037263028552531, 568385780377829, 297953104144430,
+                1558584511931211, 2238221839292471
+#else
+                39519059, 15456423, 8972517, 8469608, 15640622, 4439847,
+                3121995, 23224719, 27842615, 33352104
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                190565267697443, 672855706028058, 338796554369226,
+                337687268493904, 853246848691734
+#else
+                51801891, 2839643, 22530074, 10026331, 4602058, 5048462,
+                28248656, 5031932, 55733782, 12714368
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1763863028400139, 766498079432444, 1321118624818005,
+                69494294452268, 858786744165651
+#else
+                20807691, 26283607, 29286140, 11421711, 39232341, 19686201,
+                45881388, 1035545, 47375635, 12796919
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1292056768563024, 1456632109855638, 1100631247050184,
+                1386133165675321, 1232898350193752
+#else
+                12076880, 19253146, 58323862, 21705509, 42096072, 16400683,
+                49517369, 20654993, 3480664, 18371617
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                366253102478259, 525676242508811, 1449610995265438,
+                1183300845322183, 185960306491545
+#else
+                34747315, 5457596, 28548107, 7833186, 7303070, 21600887,
+                42745799, 17632556, 33734809, 2771024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                28315355815982, 460422265558930, 1799675876678724,
+                1969256312504498, 1051823843138725
+#else
+                45719598, 421931, 26597266, 6860826, 22486084, 26817260,
+                49971378, 29344205, 42556581, 15673396
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                156914999361983, 1606148405719949, 1665208410108430,
+                317643278692271, 1383783705665320
+#else
+                46924223, 2338215, 19788685, 23933476, 63107598, 24813538,
+                46837679, 4733253, 3727144, 20619984
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                54684536365732, 2210010038536222, 1194984798155308,
+                535239027773705, 1516355079301361
+#else
+                6120100, 814863, 55314462, 32931715, 6812204, 17806661, 2019593,
+                7975683, 31123697, 22595451
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1484387703771650, 198537510937949, 2186282186359116,
+                617687444857508, 647477376402122
+#else
+                30069250, 22119100, 30434653, 2958439, 18399564, 32578143,
+                12296868, 9204260, 50676426, 9648164
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2147715541830533, 500032538445817, 646380016884826,
+                352227855331122, 1488268620408052
+#else
+                32705413, 32003455, 30705657, 7451065, 55303258, 9631812,
+                3305266, 5248604, 41100532, 22176930
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                159386186465542, 1877626593362941, 618737197060512,
+                1026674284330807, 1158121760792685
+#else
+                17219846, 2375039, 35537917, 27978816, 47649184, 9219902,
+                294711, 15298639, 2662509, 17257359
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1744544377739822, 1964054180355661, 1685781755873170,
+                2169740670377448, 1286112621104591
+#else
+                65935918, 25995736, 62742093, 29266687, 45762450, 25120105,
+                32087528, 32331655, 32247247, 19164571
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                81977249784993, 1667943117713086, 1668983819634866,
+                1605016835177615, 1353960708075544
+#else
+                14312609, 1221556, 17395390, 24854289, 62163122, 24869796,
+                38911119, 23916614, 51081240, 20175586
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1602253788689063, 439542044889886, 2220348297664483,
+                657877410752869, 157451572512238
+#else
+                65680039, 23875441, 57873182, 6549686, 59725795, 33085767,
+                23046501, 9803137, 17597934, 2346211
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1029287186166717, 65860128430192, 525298368814832,
+                1491902500801986, 1461064796385400
+#else
+                18510781, 15337574, 26171504, 981392, 44867312, 7827555,
+                43617730, 22231079, 3059832, 21771562
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                408216988729246, 2121095722306989, 913562102267595,
+                1879708920318308, 241061448436731
+#else
+                10141598, 6082907, 17829293, 31606789, 9830091, 13613136,
+                41552228, 28009845, 33606651, 3592095
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1185483484383269, 1356339572588553, 584932367316448,
+                102132779946470, 1792922621116791
+#else
+                33114149, 17665080, 40583177, 20211034, 33076704, 8716171,
+                1151462, 1521897, 66126199, 26716628
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1966196870701923, 2230044620318636, 1425982460745905,
+                261167817826569, 46517743394330
+#else
+                34169699, 29298616, 23947180, 33230254, 34035889, 21248794,
+                50471177, 3891703, 26353178, 693168
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                107077591595359, 884959942172345, 27306869797400,
+                2224911448949390, 964352058245223
+#else
+                30374239, 1595580, 50224825, 13186930, 4600344, 406904, 9585294,
+                33153764, 31375463, 14369965
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1730194207717538, 431790042319772, 1831515233279467,
+                1372080552768581, 1074513929381760
+#else
+                52738210, 25781902, 1510300, 6434173, 48324075, 27291703,
+                32732229, 20445593, 17901440, 16011505
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1450880638731607, 1019861580989005, 1229729455116861,
+                1174945729836143, 826083146840706
+#else
+                18171223, 21619806, 54608461, 15197121, 56070717, 18324396,
+                47936623, 17508055, 8764034, 12309598
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1899935429242705, 1602068751520477, 940583196550370,
+                82431069053859, 1540863155745696
+#else
+                5975889, 28311244, 47649501, 23872684, 55567586, 14015781,
+                43443107, 1228318, 17544096, 22960650
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2136688454840028, 2099509000964294, 1690800495246475,
+                1217643678575476, 828720645084218
+#else
+                5811932, 31839139, 3442886, 31285122, 48741515, 25194890,
+                49064820, 18144304, 61543482, 12348899
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                765548025667841, 462473984016099, 998061409979798,
+                546353034089527, 2212508972466858
+#else
+                35709185, 11407554, 25755363, 6891399, 63851926, 14872273,
+                42259511, 8141294, 56476330, 32968952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                46575283771160, 892570971573071, 1281983193144090,
+                1491520128287375, 75847005908304
+#else
+                54433560, 694025, 62032719, 13300343, 14015258, 19103038,
+                57410191, 22225381, 30944592, 1130208
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1801436127943107, 1734436817907890, 1268728090345068,
+                167003097070711, 2233597765834956
+#else
+                8247747, 26843490, 40546482, 25845122, 52706924, 18905521,
+                4652151, 2488540, 23550156, 33283200
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1997562060465113, 1048700225534011, 7615603985628,
+                1855310849546841, 2242557647635213
+#else
+                17294297, 29765994, 7026747, 15626851, 22990044, 113481,
+                2267737, 27646286, 66700045, 33416712
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1161017320376250, 492624580169043, 2169815802355237,
+                976496781732542, 1770879511019629
+#else
+                16091066, 17300506, 18599251, 7340678, 2137637, 32332775,
+                63744702, 14550935, 3260525, 26388161
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1357044908364776, 729130645262438, 1762469072918979,
+                1365633616878458, 181282906404941
+#else
+                62198760, 20221544, 18550886, 10864893, 50649539, 26262835,
+                44079994, 20349526, 54360141, 2701325
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1080413443139865, 1155205815510486, 1848782073549786,
+                622566975152580, 124965574467971
+#else
+                58534169, 16099414, 4629974, 17213908, 46322650, 27548999,
+                57090500, 9276970, 11329923, 1862132
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1184526762066993, 247622751762817, 692129017206356,
+                820018689412496, 2188697339828085
+#else
+                14763057, 17650824, 36190593, 3689866, 3511892, 10313526,
+                45157776, 12219230, 58070901, 32614131
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2020536369003019, 202261491735136, 1053169669150884,
+                2056531979272544, 778165514694311
+#else
+                8894987, 30108338, 6150752, 3013931, 301220, 15693451, 35127648,
+                30644714, 51670695, 11595569
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                237404399610207, 1308324858405118, 1229680749538400,
+                720131409105291, 1958958863624906
+#else
+                15214943, 3537601, 40870142, 19495559, 4418656, 18323671,
+                13947275, 10730794, 53619402, 29190761
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                515583508038846, 17656978857189, 1717918437373989,
+                1568052070792483, 46975803123923
+#else
+                64570558, 7682792, 32759013, 263109, 37124133, 25598979,
+                44776739, 23365796, 977107, 699994
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                281527309158085, 36970532401524, 866906920877543,
+                2222282602952734, 1289598729589882
+#else
+                54642373, 4195083, 57897332, 550903, 51543527, 12917919,
+                19118110, 33114591, 36574330, 19216518
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1278207464902042, 494742455008756, 1262082121427081,
+                1577236621659884, 1888786707293291
+#else
+                31788442, 19046775, 4799988, 7372237, 8808585, 18806489,
+                9408236, 23502657, 12493931, 28145115
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                353042527954210, 1830056151907359, 1111731275799225,
+                174960955838824, 404312815582675
+#else
+                41428258, 5260743, 47873055, 27269961, 63412921, 16566086,
+                27218280, 2607121, 29375955, 6024730
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2064251142068628, 1666421603389706, 1419271365315441,
+                468767774902855, 191535130366583
+#else
+                842132, 30759739, 62345482, 24831616, 26332017, 21148791,
+                11831879, 6985184, 57168503, 2854095
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1716987058588002, 1859366439773457, 1767194234188234,
+                64476199777924, 1117233614485261
+#else
+                62261602, 25585100, 2516241, 27706719, 9695690, 26333246,
+                16512644, 960770, 12121869, 16648078
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                984292135520292, 135138246951259, 2220652137473167,
+                1722843421165029, 190482558012909
+#else
+                51890212, 14667095, 53772635, 2013716, 30598287, 33090295,
+                35603941, 25672367, 20237805, 2838411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                298845952651262, 1166086588952562, 1179896526238434,
+                1347812759398693, 1412945390096208
+#else
+                47820798, 4453151, 15298546, 17376044, 22115042, 17581828,
+                12544293, 20083975, 1068880, 21054527
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143239552672925, 906436640714209, 2177000572812152,
+                2075299936108548, 325186347798433
+#else
+                57549981, 17035596, 33238497, 13506958, 30505848, 32439836,
+                58621956, 30924378, 12521377, 4845654
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                721024854374772, 684487861263316, 1373438744094159,
+                2193186935276995, 1387043709851261
+#else
+                38910324, 10744107, 64150484, 10199663, 7759311, 20465832,
+                3409347, 32681032, 60626557, 20668561
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                418098668140962, 715065997721283, 1471916138376055,
+                2168570337288357, 937812682637044
+#else
+                43547042, 6230155, 46726851, 10655313, 43068279, 21933259,
+                10477733, 32314216, 63995636, 13974497
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1043584187226485, 2143395746619356, 2209558562919611,
+                482427979307092, 847556718384018
+#else
+                12966261, 15550616, 35069916, 31939085, 21025979, 32924988,
+                5642324, 7188737, 18895762, 12629579
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1248731221520759, 1465200936117687, 540803492710140,
+                52978634680892, 261434490176109
+#else
+                14741879, 18607545, 22177207, 21833195, 1279740, 8058600,
+                11758140, 789443, 32195181, 3895677
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1057329623869501, 620334067429122, 461700859268034,
+                2012481616501857, 297268569108938
+#else
+                10758205, 15755439, 62598914, 9243697, 62229442, 6879878,
+                64904289, 29988312, 58126794, 4429646
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1055352180870759, 1553151421852298, 1510903185371259,
+                1470458349428097, 1226259419062731
+#else
+                64654951, 15725972, 46672522, 23143759, 61304955, 22514211,
+                59972993, 21911536, 18047435, 18272689
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1492988790301668, 790326625573331, 1190107028409745,
+                1389394752159193, 1620408196604194
+#else
+                41935844, 22247266, 29759955, 11776784, 44846481, 17733976,
+                10993113, 20703595, 49488162, 24145963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47000654413729, 1004754424173864, 1868044813557703,
+                173236934059409, 588771199737015
+#else
+                21987233, 700364, 42603816, 14972007, 59334599, 27836036,
+                32155025, 2581431, 37149879, 8773374
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                30498470091663, 1082245510489825, 576771653181956,
+                806509986132686, 1317634017056939
+#else
+                41540495, 454462, 53896929, 16126714, 25240068, 8594567,
+                20656846, 12017935, 59234475, 19634276
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                420308055751555, 1493354863316002, 165206721528088,
+                1884845694919786, 2065456951573059
+#else
+                6028163, 6263078, 36097058, 22252721, 66289944, 2461771,
+                35267690, 28086389, 65387075, 30777706
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115636332012334, 1854340990964155, 83792697369514,
+                1972177451994021, 457455116057587
+#else
+                54829870, 16624276, 987579, 27631834, 32908202, 1248608,
+                7719845, 29387734, 28408819, 6816612
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1698968457310898, 1435137169051090, 1083661677032510,
+                938363267483709, 340103887207182
+#else
+                56750770, 25316602, 19549650, 21385210, 22082622, 16147817,
+                20613181, 13982702, 56769294, 5067942
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1995325341336574, 911500251774648, 164010755403692,
+                855378419194762, 1573601397528842
+#else
+                36602878, 29732664, 12074680, 13582412, 47230892, 2443950,
+                47389578, 12746131, 5331210, 23448488
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                241719380661528, 310028521317150, 1215881323380194,
+                1408214976493624, 2141142156467363
+#else
+                30528792, 3601899, 65151774, 4619784, 39747042, 18118043,
+                24180792, 20984038, 27679907, 31905504
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1315157046163473, 727368447885818, 1363466668108618,
+                1668921439990361, 1398483384337907
+#else
+                9402385, 19597367, 32834042, 10838634, 40528714, 20317236,
+                26653273, 24868867, 22611443, 20839026
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                75029678299646, 1015388206460473, 1849729037055212,
+                1939814616452984, 444404230394954
+#else
+                22190590, 1118029, 22736441, 15130463, 36648172, 27563110,
+                19189624, 28905490, 4854858, 6622139
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2053597130993710, 2024431685856332, 2233550957004860,
+                2012407275509545, 872546993104440
+#else
+                58798126, 30600981, 58846284, 30166382, 56707132, 33282502,
+                13424425, 29987205, 26404408, 13001963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1217269667678610, 599909351968693, 1390077048548598,
+                1471879360694802, 739586172317596
+#else
+                35867026, 18138731, 64114613, 8939345, 11562230, 20713762,
+                41044498, 21932711, 51703708, 11020692
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1718318639380794, 1560510726633958, 904462881159922,
+                1418028351780052, 94404349451937
+#else
+                1866042, 25604943, 59210214, 23253421, 12483314, 13477547,
+                3175636, 21130269, 28761761, 1406734
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2132502667405250, 214379346175414, 1502748313768060,
+                1960071701057800, 1353971822643138
+#else
+                66660290, 31776765, 13018550, 3194501, 57528444, 22392694,
+                24760584, 29207344, 25577410, 20175752
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                319394212043702, 2127459436033571, 717646691535162,
+                663366796076914, 318459064945314
+#else
+                42818486, 4759344, 66418211, 31701615, 2066746, 10693769,
+                37513074, 9884935, 57739938, 4745409
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                405989424923593, 1960452633787083, 667349034401665,
+                1492674260767112, 1451061489880787
+#else
+                57967561, 6049713, 47577803, 29213020, 35848065, 9944275,
+                51646856, 22242579, 10931923, 21622501
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                947085906234007, 323284730494107, 1485778563977200,
+                728576821512394, 901584347702286
+#else
+                50547351, 14112679, 59096219, 4817317, 59068400, 22139825,
+                44255434, 10856640, 46638094, 13434653
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1575783124125742, 2126210792434375, 1569430791264065,
+                1402582372904727, 1891780248341114
+#else
+                22759470, 23480998, 50342599, 31683009, 13637441, 23386341,
+                1765143, 20900106, 28445306, 28189722
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                838432205560695, 1997703511451664, 1018791879907867,
+                1662001808174331, 78328132957753
+#else
+                29875063, 12493613, 2795536, 29768102, 1710619, 15181182,
+                56913147, 24765756, 9074233, 1167180
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                739152638255629, 2074935399403557, 505483666745895,
+                1611883356514088, 628654635394878
+#else
+                40903181, 11014232, 57266213, 30918946, 40200743, 7532293,
+                48391976, 24018933, 3843902, 9367684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1822054032121349, 643057948186973, 7306757352712,
+                577249257962099, 284735863382083
+#else
+                56139269, 27150720, 9591133, 9582310, 11349256, 108879,
+                16235123, 8601684, 66969667, 4242894
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1366558556363930, 1448606567552086, 1478881020944768,
+                165803179355898, 1115718458123498
+#else
+                22092954, 20363309, 65066070, 21585919, 32186752, 22037044,
+                60534522, 2470659, 39691498, 16625500
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                204146226972102, 1630511199034723, 2215235214174763,
+                174665910283542, 956127674017216
+#else
+                56051142, 3042015, 13770083, 24296510, 584235, 33009577,
+                59338006, 2602724, 39757248, 14247412
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1562934578796716, 1070893489712745, 11324610642270,
+                958989751581897, 2172552325473805
+#else
+                6314156, 23289540, 34336361, 15957556, 56951134, 168749,
+                58490057, 14290060, 27108877, 32373552
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1770564423056027, 735523631664565, 1326060113795289,
+                1509650369341127, 65892421582684
+#else
+                58522267, 26383465, 13241781, 10960156, 34117849, 19759835,
+                33547975, 22495543, 39960412, 981873
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                623682558650637, 1337866509471512, 990313350206649,
+                1314236615762469, 1164772974270275
+#else
+                22833421, 9293594, 34459416, 19935764, 57971897, 14756818,
+                44180005, 19583651, 56629059, 17356469
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                223256821462517, 723690150104139, 1000261663630601,
+                933280913953265, 254872671543046
+#else
+                59340277, 3326785, 38997067, 10783823, 19178761, 14905060,
+                22680049, 13906969, 51175174, 3797898
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1969087237026041, 624795725447124, 1335555107635969,
+                2069986355593023, 1712100149341902
+#else
+                21721337, 29341686, 54902740, 9310181, 63226625, 19901321,
+                23740223, 30845200, 20491982, 25512280
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1236103475266979, 1837885883267218, 1026072585230455,
+                1025865513954973, 1801964901432134
+#else
+                9209251, 18419377, 53852306, 27386633, 66377847, 15289672,
+                25947805, 15286587, 30997318, 26851369
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115241013365517, 1712251818829143, 2148864332502771,
+                2096001471438138, 2235017246626125
+#else
+                7392013, 16618386, 23946583, 25514540, 53843699, 32020573,
+                52911418, 31232855, 17649997, 33304352
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1299268198601632, 2047148477845621, 2165648650132450,
+                1612539282026145, 514197911628890
+#else
+                57807776, 19360604, 30609525, 30504889, 41933794, 32270679,
+                51867297, 24028707, 64875610, 7662145
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                118352772338543, 1067608711804704, 1434796676193498,
+                1683240170548391, 230866769907437
+#else
+                49550191, 1763593, 33994528, 15908609, 37067994, 21380136,
+                7335079, 25082233, 63934189, 3440182
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1850689576796636, 1601590730430274, 1139674615958142,
+                1954384401440257, 76039205311
+#else
+                47219164, 27577423, 42997570, 23865561, 10799742, 16982475,
+                40449, 29122597, 4862399, 1133
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1723387471374172, 997301467038410, 533927635123657,
+                20928644693965, 1756575222802513
+#else
+                34252636, 25680474, 61686474, 14860949, 50789833, 7956141,
+                7258061, 311861, 36513873, 26175010
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2146711623855116, 503278928021499, 625853062251406,
+                1109121378393107, 1033853809911861
+#else
+                63335436, 31988495, 28985339, 7499440, 24445838, 9325937,
+                29727763, 16527196, 18278453, 15405622
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                571005965509422, 2005213373292546, 1016697270349626,
+                56607856974274, 914438579435146
+#else
+                62726958, 8508651, 47210498, 29880007, 61124410, 15149969,
+                53795266, 843522, 45233802, 13626196
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346698876211176, 2076651707527589, 1084761571110205,
+                265334478828406, 1068954492309671
+#else
+                2281448, 20067377, 56193445, 30944521, 1879357, 16164207,
+                56324982, 3953791, 13340839, 15928663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1769967932677654, 1695893319756416, 1151863389675920,
+                1781042784397689, 400287774418285
+#else
+                31727126, 26374577, 48671360, 25270779, 2875792, 17164102,
+                41838969, 26539605, 43656557, 5964752
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1851867764003121, 403841933237558, 820549523771987,
+                761292590207581, 1743735048551143
+#else
+                4100401, 27594980, 49929526, 6017713, 48403027, 12227140,
+                40424029, 11344143, 2538215, 25983677
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                410915148140008, 2107072311871739, 1004367461876503,
+                99684895396761, 1180818713503224
+#else
+                57675240, 6123112, 11159803, 31397824, 30016279, 14966241,
+                46633881, 1485420, 66479608, 17595569
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                285945406881439, 648174397347453, 1098403762631981,
+                1366547441102991, 1505876883139217
+#else
+                40304287, 4260918, 11851389, 9658551, 35091757, 16367491,
+                46903439, 20363143, 11659921, 22439314
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                672095903120153, 1675918957959872, 636236529315028,
+                1569297300327696, 2164144194785875
+#else
+                26180377, 10015009, 36264640, 24973138, 5418196, 9480663,
+                2231568, 23384352, 33100371, 32248261
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1902708175321798, 1035343530915438, 1178560808893263,
+                301095684058146, 1280977479761118
+#else
+                15121094, 28352561, 56718958, 15427820, 39598927, 17561924,
+                21670946, 4486675, 61177054, 19088051
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1615357281742403, 404257611616381, 2160201349780978,
+                1160947379188955, 1578038619549541
+#else
+                16166467, 24070699, 56004733, 6023907, 35182066, 32189508,
+                2340059, 17299464, 56373093, 23514607
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013087639791217, 822734930507457, 1785668418619014,
+                1668650702946164, 389450875221715
+#else
+                28042865, 29997343, 54982337, 12259705, 63391366, 26608532,
+                6766452, 24864833, 18036435, 5803270
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                453918449698368, 106406819929001, 2072540975937135,
+                308588860670238, 1304394580755385
+#else
+                66291264, 6763911, 11803561, 1585585, 10958447, 30883267,
+                23855390, 4598332, 60949433, 19436993
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295082798350326, 2091844511495996, 1851348972587817,
+                3375039684596, 789440738712837
+#else
+                36077558, 19298237, 17332028, 31170912, 31312681, 27587249,
+                696308, 50292, 47013125, 11763583
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2083069137186154, 848523102004566, 993982213589257,
+                1405313299916317, 1532824818698468
+#else
+                66514282, 31040148, 34874710, 12643979, 12650761, 14811489,
+                665117, 20940800, 47335652, 22840869
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1495961298852430, 1397203457344779, 1774950217066942,
+                139302743555696, 66603584342787
+#else
+                30464590, 22291560, 62981387, 20819953, 19835326, 26448819,
+                42712688, 2075772, 50088707, 992470
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1782411379088302, 1096724939964781, 27593390721418,
+                542241850291353, 1540337798439873
+#else
+                18357166, 26559999, 7766381, 16342475, 37783946, 411173,
+                14578841, 8080033, 55534529, 22952821
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                693543956581437, 171507720360750, 1557908942697227,
+                1074697073443438, 1104093109037196
+#else
+                19598397, 10334610, 12555054, 2555664, 18821899, 23214652,
+                21873262, 16014234, 26224780, 16452269
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                345288228393419, 1099643569747172, 134881908403743,
+                1740551994106740, 248212179299770
+#else
+                36884939, 5145195, 5944548, 16385966, 3976735, 2009897,
+                55731060, 25936245, 46575034, 3698649
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                231429562203065, 1526290236421172, 2021375064026423,
+                1520954495658041, 806337791525116
+#else
+                14187449, 3448569, 56472628, 22743496, 44444983, 30120835,
+                7268409, 22663988, 27394300, 12015369
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1079623667189886, 872403650198613, 766894200588288,
+                2163700860774109, 2023464507911816
+#else
+                19695742, 16087646, 28032085, 12999827, 6817792, 11427614,
+                20244189, 32241655, 53849736, 30151970
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                854645372543796, 1936406001954827, 151460662541253,
+                825325739271555, 1554306377287556
+#else
+                30860084, 12735208, 65220619, 28854697, 50133957, 2256939,
+                58942851, 12298311, 58558340, 23160969
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1497138821904622, 1044820250515590, 1742593886423484,
+                1237204112746837, 849047450816987
+#else
+                61389038, 22309106, 65198214, 15569034, 26642876, 25966672,
+                61319509, 18435777, 62132699, 12651792
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                667962773375330, 1897271816877105, 1399712621683474,
+                1143302161683099, 2081798441209593
+#else
+                64260450, 9953420, 11531313, 28271553, 26895122, 20857343,
+                53990043, 17036529, 9768697, 31021214
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                127147851567005, 1936114012888110, 1704424366552046,
+                856674880716312, 716603621335359
+#else
+                42389405, 1894650, 66821166, 28850346, 15348718, 25397902,
+                32767512, 12765450, 4940095, 10678226
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1072409664800960, 2146937497077528, 1508780108920651,
+                935767602384853, 1112800433544068
+#else
+                18860224, 15980149, 48121624, 31991861, 40875851, 22482575,
+                59264981, 13944023, 42736516, 16582018
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                333549023751292, 280219272863308, 2104176666454852,
+                1036466864875785, 536135186520207
+#else
+                51604604, 4970267, 37215820, 4175592, 46115652, 31354675,
+                55404809, 15444559, 56105103, 7989036
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                373666279883137, 146457241530109, 304116267127857,
+                416088749147715, 1258577131183391
+#else
+                31490433, 5568061, 64696061, 2182382, 34772017, 4531685,
+                35030595, 6200205, 47422751, 18754260
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1186115062588401, 2251609796968486, 1098944457878953,
+                1153112761201374, 1791625503417267
+#else
+                49800177, 17674491, 35586086, 33551600, 34221481, 16375548,
+                8680158, 17182719, 28550067, 26697300
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1870078460219737, 2129630962183380, 852283639691142,
+                292865602592851, 401904317342226
+#else
+                38981977, 27866340, 16837844, 31733974, 60258182, 12700015,
+                37068883, 4364037, 1155602, 5988841
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1361070124828035, 815664541425524, 1026798897364671,
+                1951790935390647, 555874891834790
+#else
+                21890435, 20281525, 54484852, 12154348, 59276991, 15300495,
+                23148983, 29083951, 24618406, 8283181
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1546301003424277, 459094500062839, 1097668518375311,
+                1780297770129643, 720763293687608
+#else
+                33972757, 23041680, 9975415, 6841041, 35549071, 16356535,
+                3070187, 26528504, 1466168, 10740210
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1212405311403990, 1536693382542438, 61028431067459,
+                1863929423417129, 1223219538638038
+#else
+                65599446, 18066246, 53605478, 22898515, 32799043, 909394,
+                53169961, 27774712, 34944214, 18227391
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1294303766540260, 1183557465955093, 882271357233093,
+                63854569425375, 2213283684565087
+#else
+                3960804, 19286629, 39082773, 17636380, 47704005, 13146867,
+                15567327, 951507, 63848543, 32980496
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                339050984211414, 601386726509773, 413735232134068,
+                966191255137228, 1839475899458159
+#else
+                24740822, 5052253, 37014733, 8961360, 25877428, 6165135,
+                42740684, 14397371, 59728495, 27410326
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                235605972169408, 2174055643032978, 1538335001838863,
+                1281866796917192, 1815940222628465
+#else
+                38220480, 3510802, 39005586, 32395953, 55870735, 22922977,
+                51667400, 19101303, 65483377, 27059617
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1632352921721536, 1833328609514701, 2092779091951987,
+                1923956201873226, 2210068022482919
+#else
+                793280, 24323954, 8836301, 27318725, 39747955, 31184838,
+                33152842, 28669181, 57202663, 32932579
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                35271216625062, 1712350667021807, 983664255668860,
+                98571260373038, 1232645608559836
+#else
+                5666214, 525582, 20782575, 25516013, 42570364, 14657739,
+                16099374, 1468826, 60937436, 18367850
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1998172393429622, 1798947921427073, 784387737563581,
+                1589352214827263, 1589861734168180
+#else
+                62249590, 29775088, 64191105, 26806412, 7778749, 11688288,
+                36704511, 23683193, 65549940, 23690785
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1733739258725305, 31715717059538, 201969945218860,
+                992093044556990, 1194308773174556
+#else
+                10896313, 25834728, 824274, 472601, 47648556, 3009586, 25248958,
+                14783338, 36527388, 17796587
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                846415389605137, 746163495539180, 829658752826080,
+                592067705956946, 957242537821393
+#else
+                10566929, 12612572, 35164652, 11118702, 54475488, 12362878,
+                21752402, 8822496, 24003793, 14264025
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1758148849754419, 619249044817679, 168089007997045,
+                1371497636330523, 1867101418880350
+#else
+                27713843, 26198459, 56100623, 9227529, 27050101, 2504721,
+                23886875, 20436907, 13958494, 27821979
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                326633984209635, 261759506071016, 1700682323676193,
+                1577907266349064, 1217647663383016
+#else
+                43627235, 4867225, 39861736, 3900520, 29838369, 25342141,
+                35219464, 23512650, 7340520, 18144364
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1714182387328607, 1477856482074168, 574895689942184,
+                2159118410227270, 1555532449716575
+#else
+                4646495, 25543308, 44342840, 22021777, 23184552, 8566613,
+                31366726, 32173371, 52042079, 23179239
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                853828206885131, 998498946036955, 1835887550391235,
+                207627336608048, 258363815956050
+#else
+                49838347, 12723031, 50115803, 14878793, 21619651, 27356856,
+                27584816, 3093888, 58265170, 3849920
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                141141474651677, 1236728744905256, 643101419899887,
+                1646615130509173, 1208239602291765
+#else
+                58043933, 2103171, 25561640, 18428694, 61869039, 9582957,
+                32477045, 24536477, 5002293, 18004173
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1501663228068911, 1354879465566912, 1444432675498247,
+                897812463852601, 855062598754348
+#else
+                55051311, 22376525, 21115584, 20189277, 8808711, 21523724,
+                16489529, 13378448, 41263148, 12741425
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                714380763546606, 1032824444965790, 1774073483745338,
+                1063840874947367, 1738680636537158
+#else
+                61162478, 10645102, 36197278, 15390283, 63821882, 26435754,
+                24306471, 15852464, 28834118, 25908360
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1640635546696252, 633168953192112, 2212651044092396,
+                30590958583852, 368515260889378
+#else
+                49773116, 24447374, 42577584, 9434952, 58636780, 32971069,
+                54018092, 455840, 20461858, 5491305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1171650314802029, 1567085444565577, 1453660792008405,
+                757914533009261, 1619511342778196
+#else
+                13669229, 17458950, 54626889, 23351392, 52539093, 21661233,
+                42112877, 11293806, 38520660, 24132599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                420958967093237, 971103481109486, 2169549185607107,
+                1301191633558497, 1661514101014240
+#else
+                28497909, 6272777, 34085870, 14470569, 8906179, 32328802,
+                18504673, 19389266, 29867744, 24758489
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                907123651818302, 1332556122804146, 1824055253424487,
+                1367614217442959, 1982558335973172
+#else
+                50901822, 13517195, 39309234, 19856633, 24009063, 27180541,
+                60741263, 20379039, 22853428, 29542421
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121533090144639, 1021251337022187, 110469995947421,
+                1511059774758394, 2110035908131662
+#else
+                24191359, 16712145, 53177067, 15217830, 14542237, 1646131,
+                18603514, 22516545, 12876622, 31441985
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                303213233384524, 2061932261128138, 352862124777736,
+                40828818670255, 249879468482660
+#else
+                17902668, 4518229, 66697162, 30725184, 26878216, 5258055,
+                54248111, 608396, 16031844, 3723494
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                856559257852200, 508517664949010, 1378193767894916,
+                1723459126947129, 1962275756614521
+#else
+                38476072, 12763727, 46662418, 7577503, 33001348, 20536687,
+                17558841, 25681542, 23896953, 29240187
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1445691340537320, 40614383122127, 402104303144865,
+                485134269878232, 1659439323587426
+#else
+                47103464, 21542479, 31520463, 605201, 2543521, 5991821,
+                64163800, 7229063, 57189218, 24727572
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                20057458979482, 1183363722525800, 2140003847237215,
+                2053873950687614, 2112017736174909
+#else
+                28816026, 298879, 38943848, 17633493, 19000927, 31888542,
+                54428030, 30605106, 49057085, 31471516
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2228654250927986, 1483591363415267, 1368661293910956,
+                1076511285177291, 526650682059608
+#else
+                16000882, 33209536, 3493091, 22107234, 37604268, 20394642,
+                12577739, 16041268, 47393624, 7847706
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                709481497028540, 531682216165724, 316963769431931,
+                1814315888453765, 258560242424104
+#else
+                10151868, 10572098, 27312476, 7922682, 14825339, 4723128,
+                34252933, 27035413, 57088296, 3852847
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1053447823660455, 1955135194248683, 1010900954918985,
+                1182614026976701, 1240051576966610
+#else
+                55678375, 15697595, 45987307, 29133784, 5386313, 15063598,
+                16514493, 17622322, 29330898, 18478208
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1957943897155497, 1788667368028035, 137692910029106,
+                1039519607062, 826404763313028
+#else
+                41609129, 29175637, 51885955, 26653220, 16615730, 2051784,
+                3303702, 15490, 39560068, 12314390
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1848942433095597, 1582009882530495, 1849292741020143,
+                1068498323302788, 2001402229799484
+#else
+                15683501, 27551389, 18109119, 23573784, 15337967, 27556609,
+                50391428, 15921865, 16103996, 29823217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1528282417624269, 2142492439828191, 2179662545816034,
+                362568973150328, 1591374675250271
+#else
+                43939021, 22773182, 13588191, 31925625, 63310306, 32479502,
+                47835256, 5402698, 37293151, 23713330
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                160026679434388, 232341189218716, 2149181472355545,
+                598041771119831, 183859001910173
+#else
+                23190676, 2384583, 34394524, 3462153, 37205209, 32025299,
+                55842007, 8911516, 41903005, 2739712
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013278155187349, 662660471354454, 793981225706267,
+                411706605985744, 804490933124791
+#else
+                21374101, 30000182, 33584214, 9874410, 15377179, 11831242,
+                33578960, 6134906, 4931255, 11987849
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2051892037280204, 488391251096321, 2230187337030708,
+                930221970662692, 679002758255210
+#else
+                67101132, 30575573, 50885377, 7277596, 105524, 33232381,
+                35628324, 13861387, 37032554, 10117929
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1530723630438670, 875873929577927, 341560134269988,
+                449903119530753, 1055551308214179
+#else
+                37607694, 22809559, 40945095, 13051538, 41483300, 5089642,
+                60783361, 6704078, 12890019, 15728940
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1461835919309432, 1955256480136428, 180866187813063,
+                1551979252664528, 557743861963950
+#else
+                45136504, 21783052, 66157804, 29135591, 14704839, 2695116,
+                903376, 23126293, 12885166, 8311031
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                359179641731115, 1324915145732949, 902828372691474,
+                294254275669987, 1887036027752957
+#else
+                49592363, 5352193, 10384213, 19742774, 7506450, 13453191,
+                26423267, 4384730, 1888765, 28119028
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2043271609454323, 2038225437857464, 1317528426475850,
+                1398989128982787, 2027639881006861
+#else
+                41291507, 30447119, 53614264, 30371925, 30896458, 19632703,
+                34857219, 20846562, 47644429, 30214188
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2072902725256516, 312132452743412, 309930885642209,
+                996244312618453, 1590501300352303
+#else
+                43500868, 30888657, 66582772, 4651135, 5765089, 4618330,
+                6092245, 14845197, 17151279, 23700316
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1397254305160710, 695734355138021, 2233992044438756,
+                1776180593969996, 1085588199351115
+#else
+                42278406, 20820711, 51942885, 10367249, 37577956, 33289075,
+                22825804, 26467153, 50242379, 16176524
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                440567051331029, 254894786356681, 493869224930222,
+                1556322069683366, 1567456540319218
+#else
+                43525589, 6564960, 20063689, 3798228, 62368686, 7359224,
+                2006182, 23191006, 38362610, 23356922
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1950722461391320, 1907845598854797, 1822757481635527,
+                2121567704750244, 73811931471221
+#else
+                56482264, 29068029, 53788301, 28429114, 3432135, 27161203,
+                23632036, 31613822, 32808309, 1099883
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                387139307395758, 2058036430315676, 1220915649965325,
+                1794832055328951, 1230009312169328
+#else
+                15030958, 5768825, 39657628, 30667132, 60681485, 18193060,
+                51830967, 26745081, 2051440, 18328567
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1765973779329517, 659344059446977, 19821901606666,
+                1301928341311214, 1116266004075885
+#else
+                63746541, 26315059, 7517889, 9824992, 23555850, 295369, 5148398,
+                19400244, 44422509, 16633659
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1127572801181483, 1224743760571696, 1276219889847274,
+                1529738721702581, 1589819666871853
+#else
+                4577067, 16802144, 13249840, 18250104, 19958762, 19017158,
+                18559669, 22794883, 8402477, 23690159
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2181229378964934, 2190885205260020, 1511536077659137,
+                1246504208580490, 668883326494241
+#else
+                38702534, 32502850, 40318708, 32646733, 49896449, 22523642,
+                9453450, 18574360, 17983009, 9967138
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                437866655573314, 669026411194768, 81896997980338,
+                523874406393178, 245052060935236
+#else
+                41346370, 6524721, 26585488, 9969270, 24709298, 1220360,
+                65430874, 7806336, 17507396, 3651560
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1975438052228868, 1071801519999806, 594652299224319,
+                1877697652668809, 1489635366987285
+#else
+                56688388, 29436320, 14584638, 15971087, 51340543, 8861009,
+                26556809, 27979875, 48555541, 22197296
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                958592545673770, 233048016518599, 851568750216589,
+                567703851596087, 1740300006094761
+#else
+                2839082, 14284142, 4029895, 3472686, 14402957, 12689363,
+                40466743, 8459446, 61503401, 25932490
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2014540178270324, 192672779514432, 213877182641530,
+                2194819933853411, 1716422829364835
+#else
+                62269556, 30018987, 9744960, 2871048, 25113978, 3187018,
+                41998051, 32705365, 17258083, 25576693
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1540769606609725, 2148289943846077, 1597804156127445,
+                1230603716683868, 815423458809453
+#else
+                18164541, 22959256, 49953981, 32012014, 19237077, 23809137,
+                23357532, 18337424, 26908269, 12150756
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1738560251245018, 1779576754536888, 1783765347671392,
+                1880170990446751, 1088225159617541
+#else
+                36843994, 25906566, 5112248, 26517760, 65609056, 26580174,
+                43167, 28016731, 34806789, 16215818
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                659303913929492, 1956447718227573, 1830568515922666,
+                841069049744408, 1669607124206368
+#else
+                60209940, 9824393, 54804085, 29153342, 35711722, 27277596,
+                32574488, 12532905, 59605792, 24879084
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143465490433355, 1532194726196059, 1093276745494697,
+                481041706116088, 2121405433561163
+#else
+                39765323, 17038963, 39957339, 22831480, 946345, 16291093,
+                254968, 7168080, 21676107, 31611404
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1686424298744462, 1451806974487153, 266296068846582,
+                1834686947542675, 1720762336132256
+#else
+                21260942, 25129680, 50276977, 21633609, 43430902, 3968120,
+                63456915, 27338965, 63552672, 25641356
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                889217026388959, 1043290623284660, 856125087551909,
+                1669272323124636, 1603340330827879
+#else
+                16544735, 13250366, 50304436, 15546241, 62525861, 12757257,
+                64646556, 24874095, 48201831, 23891632
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1206396181488998, 333158148435054, 1402633492821422,
+                1120091191722026, 1945474114550509
+#else
+                64693606, 17976703, 18312302, 4964443, 51836334, 20900867,
+                26820650, 16690659, 25459437, 28989823
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                766720088232571, 1512222781191002, 1189719893490790,
+                2091302129467914, 2141418006894941
+#else
+                41964155, 11425019, 28423002, 22533875, 60963942, 17728207,
+                9142794, 31162830, 60676445, 31909614
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                419663647306612, 1998875112167987, 1426599870253707,
+                1154928355379510, 486538532138187
+#else
+                44004212, 6253475, 16964147, 29785560, 41994891, 21257994,
+                39651638, 17209773, 6335691, 7249989
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                938160078005954, 1421776319053174, 1941643234741774,
+                180002183320818, 1414380336750546
+#else
+                36775618, 13979674, 7503222, 21186118, 55152142, 28932738,
+                36836594, 2682241, 25993170, 21075909
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                398001940109652, 1577721237663248, 1012748649830402,
+                1540516006905144, 1011684812884559
+#else
+                4364628, 5930691, 32304656, 23509878, 59054082, 15091130,
+                22857016, 22955477, 31820367, 15075278
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1653276489969630, 6081825167624, 1921777941170836,
+                1604139841794531, 861211053640641
+#else
+                31879134, 24635739, 17258760, 90626, 59067028, 28636722,
+                24162787, 23903546, 49138625, 12833044
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996661541407379, 1455877387952927, 744312806857277,
+                139213896196746, 1000282908547789
+#else
+                19073683, 14851414, 42705695, 21694263, 7625277, 11091125,
+                47489674, 2074448, 57694925, 14905376
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1450817495603008, 1476865707053229, 1030490562252053,
+                620966950353376, 1744760161539058
+#else
+                24483648, 21618865, 64589997, 22007013, 65555733, 15355505,
+                41826784, 9253128, 27628530, 25998952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                559728410002599, 37056661641185, 2038622963352006,
+                1637244893271723, 1026565352238948
+#else
+                17597607, 8340603, 19355617, 552187, 26198470, 30377849,
+                4593323, 24396850, 52997988, 15297015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                962165956135846, 1116599660248791, 182090178006815,
+                1455605467021751, 196053588803284
+#else
+                510886, 14337390, 35323607, 16638631, 6328095, 2713355,
+                46891447, 21690211, 8683220, 2921426
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                796863823080135, 1897365583584155, 420466939481601,
+                2165972651724672, 932177357788289
+#else
+                18606791, 11874196, 27155355, 28272950, 43077121, 6265445,
+                41930624, 32275507, 4674689, 13890525
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                877047233620632, 1375632631944375, 643773611882121,
+                660022738847877, 19353932331831
+#else
+                13609624, 13069022, 39736503, 20498523, 24360585, 9592974,
+                14977157, 9835105, 4389687, 288396
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2216943882299338, 394841323190322, 2222656898319671,
+                558186553950529, 1077236877025190
+#else
+                9922506, 33035038, 13613106, 5883594, 48350519, 33120168,
+                54804801, 8317627, 23388070, 16052080
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                801118384953213, 1914330175515892, 574541023311511,
+                1471123787903705, 1526158900256288
+#else
+                12719997, 11937594, 35138804, 28525742, 26900119, 8561328,
+                46953177, 21921452, 52354592, 22741539
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                949617889087234, 2207116611267331, 912920039141287,
+                501158539198789, 62362560771472
+#else
+                15961858, 14150409, 26716931, 32888600, 44314535, 13603568,
+                11829573, 7467844, 38286736, 929274
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1474518386765335, 1760793622169197, 1157399790472736,
+                1622864308058898, 165428294422792
+#else
+                11038231, 21972036, 39798381, 26237869, 56610336, 17246600,
+                43629330, 24182562, 45715720, 2465073
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1961673048027128, 102619413083113, 1051982726768458,
+                1603657989805485, 1941613251499678
+#else
+                20017144, 29231206, 27915241, 1529148, 12396362, 15675764,
+                13817261, 23896366, 2463390, 28932292
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1401939116319266, 335306339903072, 72046196085786,
+                862423201496006, 850518754531384
+#else
+                50749986, 20890520, 55043680, 4996453, 65852442, 1073571,
+                9583558, 12851107, 4003896, 12673717
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1234706593321979, 1083343891215917, 898273974314935,
+                1640859118399498, 157578398571149
+#else
+                65377275, 18398561, 63845933, 16143081, 19294135, 13385325,
+                14741514, 24450706, 7903885, 2348101
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143483057726416, 1992614991758919, 674268662140796,
+                1773370048077526, 674318359920189
+#else
+                24536016, 17039225, 12715591, 29692277, 1511292, 10047386,
+                63266518, 26425272, 38731325, 10048126
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1835401379538542, 173900035308392, 818247630716732,
+                1762100412152786, 1021506399448291
+#else
+                54486638, 27349611, 30718824, 2591312, 56491836, 12192839,
+                18873298, 26257342, 34811107, 15221631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1506632088156630, 2127481795522179, 513812919490255,
+                140643715928370, 442476620300318
+#else
+                40630742, 22450567, 11546243, 31701949, 9180879, 7656409,
+                45764914, 2095754, 29769758, 6593415
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2056683376856736, 219094741662735, 2193541883188309,
+                1841182310235800, 556477468664293
+#else
+                35114656, 30646970, 4176911, 3264766, 12538965, 32686321,
+                26312344, 27435754, 30958053, 8292160
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1315019427910827, 1049075855992603, 2066573052986543,
+                266904467185534, 2040482348591520
+#else
+                31429803, 19595316, 29173531, 15632448, 12174511, 30794338,
+                32808830, 3977186, 26143136, 30405556
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                94096246544434, 922482381166992, 24517828745563,
+                2139430508542503, 2097139044231004
+#else
+                22648882, 1402143, 44308880, 13746058, 7936347, 365344,
+                58440231, 31879998, 63350620, 31249806
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                537697207950515, 1399352016347350, 1563663552106345,
+                2148749520888918, 549922092988516
+#else
+                51616947, 8012312, 64594134, 20851969, 43143017, 23300402,
+                65496150, 32018862, 50444388, 8194477
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1747985413252434, 680511052635695, 1809559829982725,
+                594274250930054, 201673170745982
+#else
+                27338066, 26047012, 59694639, 10140404, 48082437, 26964542,
+                27277190, 8855376, 28572286, 3005164
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                323583936109569, 1973572998577657, 1192219029966558,
+                79354804385273, 1374043025560347
+#else
+                26287105, 4821776, 25476601, 29408529, 63344350, 17765447,
+                49100281, 1182478, 41014043, 20474836
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                213277331329947, 416202017849623, 1950535221091783,
+                1313441578103244, 2171386783823658
+#else
+                59937691, 3178079, 23970071, 6201893, 49913287, 29065239,
+                45232588, 19571804, 32208682, 32356184
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                189088804229831, 993969372859110, 895870121536987,
+                1547301535298256, 1477373024911350
+#else
+                50451143, 2817642, 56822502, 14811297, 6024667, 13349505,
+                39793360, 23056589, 39436278, 22014573
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1620578418245010, 541035331188469, 2235785724453865,
+                2154865809088198, 1974627268751826
+#else
+                15941010, 24148500, 45741813, 8062054, 31876073, 33315803,
+                51830470, 32110002, 15397330, 29424239
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346805451740245, 1350981335690626, 942744349501813,
+                2155094562545502, 1012483751693409
+#else
+                8934485, 20068965, 43822466, 20131190, 34662773, 14047985,
+                31170398, 32113411, 39603297, 15087183
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2107080134091762, 1132567062788208, 1824935377687210,
+                769194804343737, 1857941799971888
+#else
+                48751602, 31397940, 24524912, 16876564, 15520426, 27193656,
+                51606457, 11461895, 16788528, 27685490
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1074666112436467, 249279386739593, 1174337926625354,
+                1559013532006480, 1472287775519121
+#else
+                65161459, 16013772, 21750665, 3714552, 49707082, 17498998,
+                63338576, 23231111, 31322513, 21938797
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1872620123779532, 1892932666768992, 1921559078394978,
+                1270573311796160, 1438913646755037
+#else
+                21426636, 27904214, 53460576, 28206894, 38296674, 28633461,
+                48833472, 18933017, 13040861, 21441484
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                837390187648199, 1012253300223599, 989780015893987,
+                1351393287739814, 328627746545550
+#else
+                11293895, 12478086, 39972463, 15083749, 37801443, 14748871,
+                14555558, 20137329, 1613710, 4896935
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1028328827183114, 1711043289969857, 1350832470374933,
+                1923164689604327, 1495656368846911
+#else
+                41213962, 15323293, 58619073, 25496531, 25967125, 20128972,
+                2825959, 28657387, 43137087, 22287016
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1900828492104143, 430212361082163, 687437570852799,
+                832514536673512, 1685641495940794
+#else
+                51184079, 28324551, 49665331, 6410663, 3622847, 10243618,
+                20615400, 12405433, 43355834, 25118015
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                842632847936398, 605670026766216, 290836444839585,
+                163210774892356, 2213815011799645
+#else
+                60017550, 12556207, 46917512, 9025186, 50036385, 4333800,
+                4378436, 2432030, 23097949, 32988414
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1176336383453996, 1725477294339771, 12700622672454,
+                678015708818208, 162724078519879
+#else
+                4565804, 17528778, 20084411, 25711615, 1724998, 189254,
+                24767264, 10103221, 48596551, 2424777
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1448049969043497, 1789411762943521, 385587766217753,
+                90201620913498, 832999441066823
+#else
+                366633, 21577626, 8173089, 26664313, 30788633, 5745705,
+                59940186, 1344108, 63466311, 12412658
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                516086333293313, 2240508292484616, 1351669528166508,
+                1223255565316488, 750235824427138
+#else
+                43107073, 7690285, 14929416, 33386175, 34898028, 20141445,
+                24162696, 18227928, 63967362, 11179384
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1263624896582495, 1102602401673328, 526302183714372,
+                2152015839128799, 1483839308490010
+#else
+                18289503, 18829478, 8056944, 16430056, 45379140, 7842513,
+                61107423, 32067534, 48424218, 22110928
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                442991718646863, 1599275157036458, 1925389027579192,
+                899514691371390, 350263251085160
+#else
+                476239, 6601091, 60956074, 23831056, 17503544, 28690532,
+                27672958, 13403813, 11052904, 5219329
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1689713572022143, 593854559254373, 978095044791970,
+                1985127338729499, 1676069120347625
+#else
+                20678527, 25178694, 34436965, 8849122, 62099106, 14574751,
+                31186971, 29580702, 9014761, 24975376
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1557207018622683, 340631692799603, 1477725909476187,
+                614735951619419, 2033237123746766
+#else
+                53464795, 23204192, 51146355, 5075807, 65594203, 22019831,
+                34006363, 9160279, 8473550, 30297594
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                968764929340557, 1225534776710944, 662967304013036,
+                1155521416178595, 791142883466590
+#else
+                24900749, 14435722, 17209120, 18261891, 44516588, 9878982,
+                59419555, 17218610, 42540382, 11788947
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1487081286167458, 993039441814934, 1792378982844640,
+                698652444999874, 2153908693179754
+#else
+                63990690, 22159237, 53306774, 14797440, 9652448, 26708528,
+                47071426, 10410732, 42540394, 32095740
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1123181311102823, 685575944875442, 507605465509927,
+                1412590462117473, 568017325228626
+#else
+                51449703, 16736705, 44641714, 10215877, 58011687, 7563910,
+                11871841, 21049238, 48595538, 8464117
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                560258797465417, 2193971151466401, 1824086900849026,
+                579056363542056, 1690063960036441
+#else
+                43708233, 8348506, 52522913, 32692717, 63158658, 27181012,
+                14325288, 8628612, 33313881, 25183915
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1918407319222416, 353767553059963, 1930426334528099,
+                1564816146005724, 1861342381708096
+#else
+                46921872, 28586496, 22367355, 5271547, 66011747, 28765593,
+                42303196, 23317577, 58168128, 27736162
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2131325168777276, 1176636658428908, 1756922641512981,
+                1390243617176012, 1966325177038383
+#else
+                60160060, 31759219, 34483180, 17533252, 32635413, 26180187,
+                15989196, 20716244, 28358191, 29300528
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2063958120364491, 2140267332393533, 699896251574968,
+                273268351312140, 375580724713232
+#else
+                43547083, 30755372, 34757181, 31892468, 57961144, 10429266,
+                50471180, 4072015, 61757200, 5596588
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2024297515263178, 416959329722687, 1079014235017302,
+                171612225573183, 1031677520051053
+#else
+                38872266, 30164383, 12312895, 6213178, 3117142, 16078565,
+                29266239, 2557221, 1768301, 15373193
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2033900009388450, 1744902869870788, 2190580087917640,
+                1949474984254121, 231049754293748
+#else
+                59865506, 30307471, 62515396, 26001078, 66980936, 32642186,
+                66017961, 29049440, 42448372, 3442909
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                343868674606581, 550155864008088, 1450580864229630,
+                481603765195050, 896972360018042
+#else
+                36898293, 5124042, 14181784, 8197961, 18964734, 21615339,
+                22597930, 7176455, 48523386, 13365929
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2151139328380127, 314745882084928, 59756825775204,
+                1676664391494651, 2048348075599360
+#else
+                59231455, 32054473, 8324672, 4690079, 6261860, 890446, 24538107,
+                24984246, 57419264, 30522764
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1528930066340597, 1605003907059576, 1055061081337675,
+                1458319101947665, 1234195845213142
+#else
+                25008885, 22782833, 62803832, 23916421, 16265035, 15721635,
+                683793, 21730648, 15723478, 18390951
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                830430507734812, 1780282976102377, 1425386760709037,
+                362399353095425, 2168861579799910
+#else
+                57448220, 12374378, 40101865, 26528283, 59384749, 21239917,
+                11879681, 5400171, 519526, 32318556
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1155762232730333, 980662895504006, 2053766700883521,
+                490966214077606, 510405877041357
+#else
+                22258397, 17222199, 59239046, 14613015, 44588609, 30603508,
+                46754982, 7315966, 16648397, 7605640
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1683750316716132, 652278688286128, 1221798761193539,
+                1897360681476669, 319658166027343
+#else
+                59027556, 25089834, 58885552, 9719709, 19259459, 18206220,
+                23994941, 28272877, 57640015, 4763277
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                618808732869972, 72755186759744, 2060379135624181,
+                1730731526741822, 48862757828238
+#else
+                45409620, 9220968, 51378240, 1084136, 41632757, 30702041,
+                31088446, 25789909, 55752334, 728111
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1463171970593505, 1143040711767452, 614590986558883,
+                1409210575145591, 1882816996436803
+#else
+                26047201, 21802961, 60208540, 17032633, 24092067, 9158119,
+                62835319, 20998873, 37743427, 28056159
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2230133264691131, 563950955091024, 2042915975426398,
+                827314356293472, 672028980152815
+#else
+                17510331, 33231575, 5854288, 8403524, 17133918, 30441820,
+                38997856, 12327944, 10750447, 10014012
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                264204366029760, 1654686424479449, 2185050199932931,
+                2207056159091748, 506015669043634
+#else
+                56796096, 3936951, 9156313, 24656749, 16498691, 32559785,
+                39627812, 32887699, 3424690, 7540221
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1784446333136569, 1973746527984364, 334856327359575,
+                1156769775884610, 1023950124675478
+#else
+                30322361, 26590322, 11361004, 29411115, 7433303, 4989748,
+                60037442, 17237212, 57864598, 15258045
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2065270940578383, 31477096270353, 306421879113491,
+                181958643936686, 1907105536686083
+#else
+                13054543, 30774935, 19155473, 469045, 54626067, 4566041,
+                5631406, 2711395, 1062915, 28418087
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1496516440779464, 1748485652986458, 872778352227340,
+                818358834654919, 97932669284220
+#else
+                47868616, 22299832, 37599834, 26054466, 61273100, 13005410,
+                61042375, 12194496, 32960380, 1459310
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                471636015770351, 672455402793577, 1804995246884103,
+                1842309243470804, 1501862504981682
+#else
+                19852015, 7027924, 23669353, 10020366, 8586503, 26896525,
+                394196, 27452547, 18638002, 22379495
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1013216974933691, 538921919682598, 1915776722521558,
+                1742822441583877, 1886550687916656
+#else
+                31395515, 15098109, 26581030, 8030562, 50580950, 28547297,
+                9012485, 25970078, 60465776, 28111795
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2094270000643336, 303971879192276, 40801275554748,
+                649448917027930, 1818544418535447
+#else
+                57916680, 31207054, 65111764, 4529533, 25766844, 607986,
+                67095642, 9677542, 34813975, 27098423
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2241737709499165, 549397817447461, 838180519319392,
+                1725686958520781, 1705639080897747
+#else
+                64664349, 33404494, 29348901, 8186665, 1873760, 12489863,
+                36174285, 25714739, 59256019, 25416002
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1216074541925116, 50120933933509, 1565829004133810,
+                721728156134580, 349206064666188
+#else
+                51872508, 18120922, 7766469, 746860, 26346930, 23332670,
+                39775412, 10754587, 57677388, 5203575
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                948617110470858, 346222547451945, 1126511960599975,
+                1759386906004538, 493053284802266
+#else
+                31834314, 14135496, 66338857, 5159117, 20917671, 16786336,
+                59640890, 26216907, 31809242, 7347066
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1454933046815146, 874696014266362, 1467170975468588,
+                1432316382418897, 2111710746366763
+#else
+                57502122, 21680191, 20414458, 13033986, 13716524, 21862551,
+                19797969, 21343177, 15192875, 31466942
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2105387117364450, 1996463405126433, 1303008614294500,
+                851908115948209, 1353742049788635
+#else
+                54445282, 31372712, 1168161, 29749623, 26747876, 19416341,
+                10609329, 12694420, 33473243, 20172328
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                750300956351719, 1487736556065813, 15158817002104,
+                1511998221598392, 971739901354129
+#else
+                33184999, 11180355, 15832085, 22169002, 65475192, 225883,
+                15089336, 22530529, 60973201, 14480052
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1874648163531693, 2124487685930551, 1810030029384882,
+                918400043048335, 586348627300650
+#else
+                31308717, 27934434, 31030839, 31657333, 15674546, 26971549,
+                5496207, 13685227, 27595050, 8737275
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1235084464747900, 1166111146432082, 1745394857881591,
+                1405516473883040, 4463504151617
+#else
+                46790012, 18404192, 10933842, 17376410, 8335351, 26008410,
+                36100512, 20943827, 26498113, 66511
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1663810156463827, 327797390285791, 1341846161759410,
+                1964121122800605, 1747470312055380
+#else
+                22644435, 24792703, 50437087, 4884561, 64003250, 19995065,
+                30540765, 29267685, 53781076, 26039336
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                660005247548233, 2071860029952887, 1358748199950107,
+                911703252219107, 1014379923023831
+#else
+                39091017, 9834844, 18617207, 30873120, 63706907, 20246925,
+                8205539, 13585437, 49981399, 15115438
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2206641276178231, 1690587809721504, 1600173622825126,
+                2156096097634421, 1106822408548216
+#else
+                23711543, 32881517, 31206560, 25191721, 6164646, 23844445,
+                33572981, 32128335, 8236920, 16492939
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1344788193552206, 1949552134239140, 1735915881729557,
+                675891104100469, 1834220014427292
+#else
+                43198286, 20038905, 40809380, 29050590, 25005589, 25867162,
+                19574901, 10071562, 6708380, 27332008
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1920949492387964, 158885288387530, 70308263664033,
+                626038464897817, 1468081726101009
+#else
+                2101372, 28624378, 19702730, 2367575, 51681697, 1047674,
+                5301017, 9328700, 29955601, 21876122
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622221042073383, 1210146474039168, 1742246422343683,
+                1403839361379025, 417189490895736
+#else
+                3096359, 9271816, 45488000, 18032587, 52260867, 25961494,
+                41216721, 20918836, 57191288, 6216607
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                22727256592983, 168471543384997, 1324340989803650,
+                1839310709638189, 504999476432775
+#else
+                34493015, 338662, 41913253, 2510421, 37895298, 19734218,
+                24822829, 27407865, 40341383, 7525078
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1313240518756327, 1721896294296942, 52263574587266,
+                2065069734239232, 804910473424630
+#else
+                44042215, 19568808, 16133486, 25658254, 63719298, 778787,
+                66198528, 30771936, 47722230, 11994100
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1337466662091884, 1287645354669772, 2018019646776184,
+                652181229374245, 898011753211715
+#else
+                21691500, 19929806, 66467532, 19187410, 3285880, 30070836,
+                42044197, 9718257, 59631427, 13381417
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1969792547910734, 779969968247557, 2011350094423418,
+                1823964252907487, 1058949448296945
+#else
+                18445390, 29352196, 14979845, 11622458, 65381754, 29971451,
+                23111647, 27179185, 28535281, 15779576
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                207343737062002, 1118176942430253, 758894594548164,
+                806764629546266, 1157700123092949
+#else
+                30098034, 3089662, 57874477, 16662134, 45801924, 11308410,
+                53040410, 12021729, 9955285, 17251076
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1273565321399022, 1638509681964574, 759235866488935,
+                666015124346707, 897983460943405
+#else
+                9734894, 18977602, 59635230, 24415696, 2060391, 11313496,
+                48682835, 9924398, 20194861, 13380996
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1717263794012298, 1059601762860786, 1837819172257618,
+                1054130665797229, 680893204263559
+#else
+                40730762, 25589224, 44941042, 15789296, 49053522, 27385639,
+                65123949, 15707770, 26342023, 10146099
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2237039662793603, 2249022333361206, 2058613546633703,
+                149454094845279, 2215176649164582
+#else
+                41091971, 33334488, 21339190, 33513044, 19745255, 30675732,
+                37471583, 2227039, 21612326, 33008704
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                79472182719605, 1851130257050174, 1825744808933107,
+                821667333481068, 781795293511946
+#else
+                54031477, 1184227, 23562814, 27583990, 46757619, 27205717,
+                25764460, 12243797, 46252298, 11649657
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                755822026485370, 152464789723500, 1178207602290608,
+                410307889503239, 156581253571278
+#else
+                57077370, 11262625, 27384172, 2271902, 26947504, 17556661,
+                39943, 6114064, 33514190, 2333242
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1418185496130297, 484520167728613, 1646737281442950,
+                1401487684670265, 1349185550126961
+#else
+                45675257, 21132610, 8119781, 7219913, 45278342, 24538297,
+                60429113, 20883793, 24350577, 20104431
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1495380034400429, 325049476417173, 46346894893933,
+                1553408840354856, 828980101835683
+#else
+                62992557, 22282898, 43222677, 4843614, 37020525, 690622,
+                35572776, 23147595, 8317859, 12352766
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1280337889310282, 2070832742866672, 1640940617225222,
+                2098284908289951, 450929509534434
+#else
+                18200138, 19078521, 34021104, 30857812, 43406342, 24451920,
+                43556767, 31266881, 20712162, 6719373
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                407703353998781, 126572141483652, 286039827513621,
+                1999255076709338, 2030511179441770
+#else
+                26656189, 6075253, 59250308, 1886071, 38764821, 4262325,
+                11117530, 29791222, 26224234, 30256974
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1254958221100483, 1153235960999843, 942907704968834,
+                637105404087392, 1149293270147267
+#else
+                49939907, 18700334, 63713187, 17184554, 47154818, 14050419,
+                21728352, 9493610, 18620611, 17125804
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                894249020470196, 400291701616810, 406878712230981,
+                1599128793487393, 1145868722604026
+#else
+                53785524, 13325348, 11432106, 5964811, 18609221, 6062965,
+                61839393, 23828875, 36407290, 17074774
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1497955250203334, 110116344653260, 1128535642171976,
+                1900106496009660, 129792717460909
+#else
+                43248326, 22321272, 26961356, 1640861, 34695752, 16816491,
+                12248508, 28313793, 13735341, 1934062
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                452487513298665, 1352120549024569, 1173495883910956,
+                1999111705922009, 367328130454226
+#else
+                25089769, 6742589, 17081145, 20148166, 21909292, 17486451,
+                51972569, 29789085, 45830866, 5473615
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1717539401269642, 1475188995688487, 891921989653942,
+                836824441505699, 1885988485608364
+#else
+                31883658, 25593331, 1083431, 21982029, 22828470, 13290673,
+                59983779, 12469655, 29111212, 28103418
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1241784121422547, 187337051947583, 1118481812236193,
+                428747751936362, 30358898927325
+#else
+                24244947, 18504025, 40845887, 2791539, 52111265, 16666677,
+                24367466, 6388839, 56813277, 452382
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022432361201842, 1088816090685051, 1977843398539868,
+                1854834215890724, 564238862029357
+#else
+                41468082, 30136590, 5217915, 16224624, 19987036, 29472163,
+                42872612, 27639183, 15766061, 8407814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                938868489100585, 1100285072929025, 1017806255688848,
+                1957262154788833, 152787950560442
+#else
+                46701865, 13990230, 15495425, 16395525, 5377168, 15166495,
+                58191841, 29165478, 59040954, 2276717
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                867319417678923, 620471962942542, 226032203305716,
+                342001443957629, 1761675818237336
+#else
+                30157899, 12924066, 49396814, 9245752, 19895028, 3368142,
+                43281277, 5096218, 22740376, 26251015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295072362439987, 931227904689414, 1355731432641687,
+                922235735834035, 892227229410209
+#else
+                2041139, 19298082, 7783686, 13876377, 41161879, 20201972,
+                24051123, 13742383, 51471265, 13295221
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1680989767906154, 535362787031440, 2136691276706570,
+                1942228485381244, 1267350086882274
+#else
+                33338218, 25048699, 12532112, 7977527, 9106186, 31839181,
+                49388668, 28941459, 62657506, 18884987
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                366018233770527, 432660629755596, 126409707644535,
+                1973842949591662, 645627343442376
+#else
+                47063583, 5454096, 52762316, 6447145, 28862071, 1883651,
+                64639598, 29412551, 7770568, 9620597
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                535509430575217, 546885533737322, 1524675609547799,
+                2138095752851703, 1260738089896827
+#else
+                23208049, 7979712, 33071466, 8149229, 1758231, 22719437,
+                30945527, 31860109, 33606523, 18786461
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1159906385590467, 2198530004321610, 714559485023225,
+                81880727882151, 1484020820037082
+#else
+                1439939, 17283952, 66028874, 32760649, 4625401, 10647766,
+                62065063, 1220117, 30494170, 22113633
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1377485731340769, 2046328105512000, 1802058637158797,
+                62146136768173, 1356993908853901
+#else
+                62071265, 20526136, 64138304, 30492664, 15640973, 26852766,
+                40369837, 926049, 65424525, 20220784
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013612215646735, 1830770575920375, 536135310219832,
+                609272325580394, 270684344495013
+#else
+                13908495, 30005160, 30919927, 27280607, 45587000, 7989038,
+                9021034, 9078865, 3353509, 4033511
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1237542585982777, 2228682050256790, 1385281931622824,
+                593183794882890, 493654978552689
+#else
+                37445433, 18440821, 32259990, 33209950, 24295848, 20642309,
+                23161162, 8839127, 27485041, 7356032
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47341488007760, 1891414891220257, 983894663308928,
+                176161768286818, 1126261115179708
+#else
+                9661008, 705443, 11980065, 28184278, 65480320, 14661172,
+                60762722, 2625014, 28431036, 16782598
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1694030170963455, 502038567066200, 1691160065225467,
+                949628319562187, 275110186693066
+#else
+                43269631, 25243016, 41163352, 7480957, 49427195, 25200248,
+                44562891, 14150564, 15970762, 4099461
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1124515748676336, 1661673816593408, 1499640319059718,
+                1584929449166988, 558148594103306
+#else
+                29262576, 16756590, 26350592, 24760869, 8529670, 22346382,
+                13617292, 23617289, 11465738, 8317062
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1784525599998356, 1619698033617383, 2097300287550715,
+                258265458103756, 1905684794832758
+#else
+                41615764, 26591503, 32500199, 24135381, 44070139, 31252209,
+                14898636, 3848455, 20969334, 28396916
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1288941072872766, 931787902039402, 190731008859042,
+                2006859954667190, 1005931482221702
+#else
+                46724414, 19206718, 48772458, 13884721, 34069410, 2842113,
+                45498038, 29904543, 11177094, 14989547
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1465551264822703, 152905080555927, 680334307368453,
+                173227184634745, 666407097159852
+#else
+                42612143, 21838415, 16959895, 2278463, 12066309, 10137771,
+                13515641, 2581286, 38621356, 9930239
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2111017076203943, 1378760485794347, 1248583954016456,
+                1352289194864422, 1895180776543896
+#else
+                49357223, 31456605, 16544299, 20545132, 51194056, 18605350,
+                18345766, 20150679, 16291480, 28240394
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                171348223915638, 662766099800389, 462338943760497,
+                466917763340314, 656911292869115
+#else
+                33879670, 2553287, 32678213, 9875984, 8534129, 6889387,
+                57432090, 6957616, 4368891, 9788741
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                488623681976577, 866497561541722, 1708105560937768,
+                1673781214218839, 1506146329818807
+#else
+                16660737, 7281060, 56278106, 12911819, 20108584, 25452756,
+                45386327, 24941283, 16250551, 22443329
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                160425464456957, 950394373239689, 430497123340934,
+                711676555398832, 320964687779005
+#else
+                47343357, 2390525, 50557833, 14161979, 1905286, 6414907,
+                4689584, 10604807, 36918461, 4782746
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                988979367990485, 1359729327576302, 1301834257246029,
+                294141160829308, 29348272277475
+#else
+                65754325, 14736940, 59741422, 20261545, 7710541, 19398842,
+                57127292, 4383044, 22546403, 437323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1434382743317910, 100082049942065, 221102347892623,
+                186982837860588, 1305765053501834
+#else
+                31665558, 21373968, 50922033, 1491338, 48740239, 3294681,
+                27343084, 2786261, 36475274, 19457415
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2205916462268190, 499863829790820, 961960554686616,
+                158062762756985, 1841471168298305
+#else
+                52641566, 32870716, 33734756, 7448551, 19294360, 14334329,
+                47418233, 2355318, 47824193, 27440058
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1191737341426592, 1847042034978363, 1382213545049056,
+                1039952395710448, 788812858896859
+#else
+                15121312, 17758270, 6377019, 27523071, 56310752, 20596586,
+                18952176, 15496498, 37728731, 11754227
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346965964571152, 1291881610839830, 2142916164336056,
+                786821641205979, 1571709146321039
+#else
+                64471568, 20071356, 8488726, 19250536, 12728760, 31931939,
+                7141595, 11724556, 22761615, 23420291
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                787164375951248, 202869205373189, 1356590421032140,
+                1431233331032510, 786341368775957
+#else
+                16918416, 11729663, 49025285, 3022986, 36093132, 20214772,
+                38367678, 21327038, 32851221, 11717399
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                492448143532951, 304105152670757, 1761767168301056,
+                233782684697790, 1981295323106089
+#else
+                11166615, 7338049, 60386341, 4531519, 37640192, 26252376,
+                31474878, 3483633, 65915689, 29523600
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665807507761866, 1343384868355425, 895831046139653,
+                439338948736892, 1986828765695105
+#else
+                66923210, 9921304, 31456609, 20017994, 55095045, 13348922,
+                33142652, 6546660, 47123585, 29606055
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                756096210874553, 1721699973539149, 258765301727885,
+                1390588532210645, 1212530909934781
+#else
+                34648249, 11266711, 55911757, 25655328, 31703693, 3855903,
+                58571733, 20721383, 36336829, 18068118
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                852891097972275, 1816988871354562, 1543772755726524,
+                1174710635522444, 202129090724628
+#else
+                49102387, 12709067, 3991746, 27075244, 45617340, 23004006,
+                35973516, 17504552, 10928916, 3011958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1205281565824323, 22430498399418, 992947814485516,
+                1392458699738672, 688441466734558
+#else
+                60151107, 17960094, 31696058, 334240, 29576716, 14796075,
+                36277808, 20749251, 18008030, 10258577
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1050627428414972, 1955849529137135, 2171162376368357,
+                91745868298214, 447733118757826
+#else
+                44660220, 15655568, 7018479, 29144429, 36794597, 32352840,
+                65255398, 1367119, 25127874, 6671743
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287181461435438, 622722465530711, 880952150571872,
+                741035693459198, 311565274989772
+#else
+                29701166, 19180498, 56230743, 9279287, 67091296, 13127209,
+                21382910, 11042292, 25838796, 4642684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1003649078149734, 545233927396469, 1849786171789880,
+                1318943684880434, 280345687170552
+#else
+                46678630, 14955536, 42982517, 8124618, 61739576, 27563961,
+                30468146, 19653792, 18423288, 4177476
+#endif
+            }},
+        },
+    },
+};
+
+#endif  // OPENSSL_SMALL
+
+// Bi[i] = (2*i+1)*B
+static const ge_precomp Bi[8] = {
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1288382639258501, 245678601348599, 269427782077623,
+            1462984067271730, 137412439391563
+#else
+            25967493, 19198397, 29566455, 3660896, 54414519, 4014786, 27544626,
+            21800161, 61029707, 2047604
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            62697248952638, 204681361388450, 631292143396476, 338455783676468,
+            1213667448819585
+#else
+            54563134, 934261, 64385954, 3049989, 66381436, 9406985, 12720692,
+            5043384, 19500929, 18085054
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            301289933810280, 1259582250014073, 1422107436869536,
+            796239922652654, 1953934009299142
+#else
+            58370664, 4489569, 9688441, 18769238, 10184608, 21191052, 29287918,
+            11864899, 42594502, 29115885
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1601611775252272, 1720807796594148, 1132070835939856,
+            1260455018889551, 2147779492816911
+#else
+            15636272, 23865875, 24204772, 25642034, 616976, 16869170, 27787599,
+            18782243, 28944399, 32004408
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            316559037616741, 2177824224946892, 1459442586438991,
+            1461528397712656, 751590696113597
+#else
+            16568933, 4717097, 55552716, 32452109, 15682895, 21747389, 16354576,
+            21778470, 7689661, 11199574
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1850748884277385, 1200145853858453, 1068094770532492,
+            672251375690438, 1586055907191707
+#else
+            30464137, 27578307, 55329429, 17883566, 23220364, 15915852, 7512774,
+            10017326, 49359771, 23634074
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            769950342298419, 132954430919746, 844085933195555, 974092374476333,
+            726076285546016
+#else
+            10861363, 11473154, 27284546, 1981175, 37044515, 12577860, 32867885,
+            14515107, 51670560, 10819379
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            425251763115706, 608463272472562, 442562545713235, 837766094556764,
+            374555092627893
+#else
+            4708026, 6336745, 20377586, 9066809, 55836755, 6594695, 41455196,
+            12483687, 54440373, 5581305
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1086255230780037, 274979815921559, 1960002765731872,
+            929474102396301, 1190409889297339
+#else
+            19563141, 16186464, 37722007, 4097518, 10237984, 29206317, 28542349,
+            13850243, 43430843, 17738489
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            665000864555967, 2065379846933859, 370231110385876, 350988370788628,
+            1233371373142985
+#else
+            5153727, 9909285, 1723747, 30776558, 30523604, 5516873, 19480852,
+            5230134, 43156425, 18378665
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            2019367628972465, 676711900706637, 110710997811333,
+            1108646842542025, 517791959672113
+#else
+            36839857, 30090922, 7665485, 10083793, 28475525, 1649722, 20654025,
+            16520125, 30598449, 7715701
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            965130719900578, 247011430587952, 526356006571389, 91986625355052,
+            2157223321444601
+#else
+            28881826, 14381568, 9657904, 3680757, 46927229, 7843315, 35708204,
+            1370707, 29794553, 32145132
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1802695059465007, 1664899123557221, 593559490740857,
+            2160434469266659, 927570450755031
+#else
+            44589871, 26862249, 14201701, 24808930, 43598457, 8844725, 18474211,
+            32192982, 54046167, 13821876
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1725674970513508, 1933645953859181, 1542344539275782,
+            1767788773573747, 1297447965928905
+#else
+            60653668, 25714560, 3374701, 28813570, 40010246, 22982724, 31655027,
+            26342105, 18853321, 19333481
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1381809363726107, 1430341051343062, 2061843536018959,
+            1551778050872521, 2036394857967624
+#else
+            4566811, 20590564, 38133974, 21313742, 59506191, 30723862, 58594505,
+            23123294, 2207752, 30344648
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1970894096313054, 528066325833207, 1619374932191227,
+            2207306624415883, 1169170329061080
+#else
+            41954014, 29368610, 29681143, 7868801, 60254203, 24130566, 54671499,
+            32891431, 35997400, 17421995
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            2070390218572616, 1458919061857835, 624171843017421,
+            1055332792707765, 433987520732508
+#else
+            25576264, 30851218, 7349803, 21739588, 16472781, 9300885, 3844789,
+            15725684, 171356, 6466918
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            893653801273833, 1168026499324677, 1242553501121234,
+            1306366254304474, 1086752658510815
+#else
+            23103977, 13316479, 9739013, 17404951, 817874, 18515490, 8965338,
+            19466374, 36393951, 16193876
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            213454002618221, 939771523987438, 1159882208056014, 317388369627517,
+            621213314200687
+#else
+            33587053, 3180712, 64714734, 14003686, 50205390, 17283591, 17238397,
+            4729455, 49034351, 9256799
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1971678598905747, 338026507889165, 762398079972271, 655096486107477,
+            42299032696322
+#else
+            41926547, 29380300, 32336397, 5036987, 45872047, 11360616, 22616405,
+            9761698, 47281666, 630304
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            177130678690680, 1754759263300204, 1864311296286618,
+            1180675631479880, 1292726903152791
+#else
+            53388152, 2639452, 42871404, 26147950, 9494426, 27780403, 60554312,
+            17593437, 64659607, 19263131
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1913163449625248, 460779200291993, 2193883288642314,
+            1008900146920800, 1721983679009502
+#else
+            63957664, 28508356, 9282713, 6866145, 35201802, 32691408, 48168288,
+            15033783, 25105118, 25659556
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1070401523076875, 1272492007800961, 1910153608563310,
+            2075579521696771, 1191169788841221
+#else
+            42782475, 15950225, 35307649, 18961608, 55446126, 28463506, 1573891,
+            30928545, 2198789, 17749813
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            692896803108118, 500174642072499, 2068223309439677,
+            1162190621851337, 1426986007309901
+#else
+            64009494, 10324966, 64867251, 7453182, 61661885, 30818928, 53296841,
+            17317989, 34647629, 21263748
+#endif
+        }},
+    },
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h.grpc_back
new file mode 100644
index 0000000..c293e95
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/curve25519_tables.h.grpc_back	
@@ -0,0 +1,7880 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// This file is generated from
+//    ./make_curve25519_tables.py > curve25519_tables.h
+
+
+static const fe d = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    929955233495203, 466365720129213, 1662059464998953, 2033849074728123,
+    1442794654840575
+#else
+    56195235, 13857412, 51736253, 6949390, 114729, 24766616, 60832955, 30306712,
+    48412415, 21499315
+#endif
+}};
+
+static const fe sqrtm1 = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    1718705420411056, 234908883556509, 2233514472574048, 2117202627021982,
+    765476049583133
+#else
+    34513072, 25610706, 9377949, 3500415, 12389472, 33281959, 41962654,
+    31548777, 326685, 11406482
+#endif
+}};
+
+static const fe d2 = {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+    1859910466990425, 932731440258426, 1072319116312658, 1815898335770999,
+    633789495995903
+#else
+    45281625, 27714825, 36363642, 13898781, 229458, 15978800, 54557047,
+    27058993, 29715967, 9444199
+#endif
+}};
+
+#if defined(OPENSSL_SMALL)
+
+// This block of code replaces the standard base-point table with a much smaller
+// one. The standard table is 30,720 bytes while this one is just 960.
+//
+// This table contains 15 pairs of group elements, (x, y), where each field
+// element is serialised with |fe_tobytes|. If |i| is the index of the group
+// element then consider i+1 as a four-bit number: (i₀, i₁, i₂, i₃) (where i₀
+// is the most significant bit). The value of the group element is then:
+// (i₀×2^192 + i₁×2^128 + i₂×2^64 + i₃)G, where G is the generator.
+static const uint8_t k25519SmallPrecomp[15 * 2 * 32] = {
+    0x1a, 0xd5, 0x25, 0x8f, 0x60, 0x2d, 0x56, 0xc9, 0xb2, 0xa7, 0x25, 0x95,
+    0x60, 0xc7, 0x2c, 0x69, 0x5c, 0xdc, 0xd6, 0xfd, 0x31, 0xe2, 0xa4, 0xc0,
+    0xfe, 0x53, 0x6e, 0xcd, 0xd3, 0x36, 0x69, 0x21, 0x58, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+    0x66, 0x66, 0x66, 0x66, 0x02, 0xa2, 0xed, 0xf4, 0x8f, 0x6b, 0x0b, 0x3e,
+    0xeb, 0x35, 0x1a, 0xd5, 0x7e, 0xdb, 0x78, 0x00, 0x96, 0x8a, 0xa0, 0xb4,
+    0xcf, 0x60, 0x4b, 0xd4, 0xd5, 0xf9, 0x2d, 0xbf, 0x88, 0xbd, 0x22, 0x62,
+    0x13, 0x53, 0xe4, 0x82, 0x57, 0xfa, 0x1e, 0x8f, 0x06, 0x2b, 0x90, 0xba,
+    0x08, 0xb6, 0x10, 0x54, 0x4f, 0x7c, 0x1b, 0x26, 0xed, 0xda, 0x6b, 0xdd,
+    0x25, 0xd0, 0x4e, 0xea, 0x42, 0xbb, 0x25, 0x03, 0xa2, 0xfb, 0xcc, 0x61,
+    0x67, 0x06, 0x70, 0x1a, 0xc4, 0x78, 0x3a, 0xff, 0x32, 0x62, 0xdd, 0x2c,
+    0xab, 0x50, 0x19, 0x3b, 0xf2, 0x9b, 0x7d, 0xb8, 0xfd, 0x4f, 0x29, 0x9c,
+    0xa7, 0x91, 0xba, 0x0e, 0x46, 0x5e, 0x51, 0xfe, 0x1d, 0xbf, 0xe5, 0xe5,
+    0x9b, 0x95, 0x0d, 0x67, 0xf8, 0xd1, 0xb5, 0x5a, 0xa1, 0x93, 0x2c, 0xc3,
+    0xde, 0x0e, 0x97, 0x85, 0x2d, 0x7f, 0xea, 0xab, 0x3e, 0x47, 0x30, 0x18,
+    0x24, 0xe8, 0xb7, 0x60, 0xae, 0x47, 0x80, 0xfc, 0xe5, 0x23, 0xe7, 0xc2,
+    0xc9, 0x85, 0xe6, 0x98, 0xa0, 0x29, 0x4e, 0xe1, 0x84, 0x39, 0x2d, 0x95,
+    0x2c, 0xf3, 0x45, 0x3c, 0xff, 0xaf, 0x27, 0x4c, 0x6b, 0xa6, 0xf5, 0x4b,
+    0x11, 0xbd, 0xba, 0x5b, 0x9e, 0xc4, 0xa4, 0x51, 0x1e, 0xbe, 0xd0, 0x90,
+    0x3a, 0x9c, 0xc2, 0x26, 0xb6, 0x1e, 0xf1, 0x95, 0x7d, 0xc8, 0x6d, 0x52,
+    0xe6, 0x99, 0x2c, 0x5f, 0x9a, 0x96, 0x0c, 0x68, 0x29, 0xfd, 0xe2, 0xfb,
+    0xe6, 0xbc, 0xec, 0x31, 0x08, 0xec, 0xe6, 0xb0, 0x53, 0x60, 0xc3, 0x8c,
+    0xbe, 0xc1, 0xb3, 0x8a, 0x8f, 0xe4, 0x88, 0x2b, 0x55, 0xe5, 0x64, 0x6e,
+    0x9b, 0xd0, 0xaf, 0x7b, 0x64, 0x2a, 0x35, 0x25, 0x10, 0x52, 0xc5, 0x9e,
+    0x58, 0x11, 0x39, 0x36, 0x45, 0x51, 0xb8, 0x39, 0x93, 0xfc, 0x9d, 0x6a,
+    0xbe, 0x58, 0xcb, 0xa4, 0x0f, 0x51, 0x3c, 0x38, 0x05, 0xca, 0xab, 0x43,
+    0x63, 0x0e, 0xf3, 0x8b, 0x41, 0xa6, 0xf8, 0x9b, 0x53, 0x70, 0x80, 0x53,
+    0x86, 0x5e, 0x8f, 0xe3, 0xc3, 0x0d, 0x18, 0xc8, 0x4b, 0x34, 0x1f, 0xd8,
+    0x1d, 0xbc, 0xf2, 0x6d, 0x34, 0x3a, 0xbe, 0xdf, 0xd9, 0xf6, 0xf3, 0x89,
+    0xa1, 0xe1, 0x94, 0x9f, 0x5d, 0x4c, 0x5d, 0xe9, 0xa1, 0x49, 0x92, 0xef,
+    0x0e, 0x53, 0x81, 0x89, 0x58, 0x87, 0xa6, 0x37, 0xf1, 0xdd, 0x62, 0x60,
+    0x63, 0x5a, 0x9d, 0x1b, 0x8c, 0xc6, 0x7d, 0x52, 0xea, 0x70, 0x09, 0x6a,
+    0xe1, 0x32, 0xf3, 0x73, 0x21, 0x1f, 0x07, 0x7b, 0x7c, 0x9b, 0x49, 0xd8,
+    0xc0, 0xf3, 0x25, 0x72, 0x6f, 0x9d, 0xed, 0x31, 0x67, 0x36, 0x36, 0x54,
+    0x40, 0x92, 0x71, 0xe6, 0x11, 0x28, 0x11, 0xad, 0x93, 0x32, 0x85, 0x7b,
+    0x3e, 0xb7, 0x3b, 0x49, 0x13, 0x1c, 0x07, 0xb0, 0x2e, 0x93, 0xaa, 0xfd,
+    0xfd, 0x28, 0x47, 0x3d, 0x8d, 0xd2, 0xda, 0xc7, 0x44, 0xd6, 0x7a, 0xdb,
+    0x26, 0x7d, 0x1d, 0xb8, 0xe1, 0xde, 0x9d, 0x7a, 0x7d, 0x17, 0x7e, 0x1c,
+    0x37, 0x04, 0x8d, 0x2d, 0x7c, 0x5e, 0x18, 0x38, 0x1e, 0xaf, 0xc7, 0x1b,
+    0x33, 0x48, 0x31, 0x00, 0x59, 0xf6, 0xf2, 0xca, 0x0f, 0x27, 0x1b, 0x63,
+    0x12, 0x7e, 0x02, 0x1d, 0x49, 0xc0, 0x5d, 0x79, 0x87, 0xef, 0x5e, 0x7a,
+    0x2f, 0x1f, 0x66, 0x55, 0xd8, 0x09, 0xd9, 0x61, 0x38, 0x68, 0xb0, 0x07,
+    0xa3, 0xfc, 0xcc, 0x85, 0x10, 0x7f, 0x4c, 0x65, 0x65, 0xb3, 0xfa, 0xfa,
+    0xa5, 0x53, 0x6f, 0xdb, 0x74, 0x4c, 0x56, 0x46, 0x03, 0xe2, 0xd5, 0x7a,
+    0x29, 0x1c, 0xc6, 0x02, 0xbc, 0x59, 0xf2, 0x04, 0x75, 0x63, 0xc0, 0x84,
+    0x2f, 0x60, 0x1c, 0x67, 0x76, 0xfd, 0x63, 0x86, 0xf3, 0xfa, 0xbf, 0xdc,
+    0xd2, 0x2d, 0x90, 0x91, 0xbd, 0x33, 0xa9, 0xe5, 0x66, 0x0c, 0xda, 0x42,
+    0x27, 0xca, 0xf4, 0x66, 0xc2, 0xec, 0x92, 0x14, 0x57, 0x06, 0x63, 0xd0,
+    0x4d, 0x15, 0x06, 0xeb, 0x69, 0x58, 0x4f, 0x77, 0xc5, 0x8b, 0xc7, 0xf0,
+    0x8e, 0xed, 0x64, 0xa0, 0xb3, 0x3c, 0x66, 0x71, 0xc6, 0x2d, 0xda, 0x0a,
+    0x0d, 0xfe, 0x70, 0x27, 0x64, 0xf8, 0x27, 0xfa, 0xf6, 0x5f, 0x30, 0xa5,
+    0x0d, 0x6c, 0xda, 0xf2, 0x62, 0x5e, 0x78, 0x47, 0xd3, 0x66, 0x00, 0x1c,
+    0xfd, 0x56, 0x1f, 0x5d, 0x3f, 0x6f, 0xf4, 0x4c, 0xd8, 0xfd, 0x0e, 0x27,
+    0xc9, 0x5c, 0x2b, 0xbc, 0xc0, 0xa4, 0xe7, 0x23, 0x29, 0x02, 0x9f, 0x31,
+    0xd6, 0xe9, 0xd7, 0x96, 0xf4, 0xe0, 0x5e, 0x0b, 0x0e, 0x13, 0xee, 0x3c,
+    0x09, 0xed, 0xf2, 0x3d, 0x76, 0x91, 0xc3, 0xa4, 0x97, 0xae, 0xd4, 0x87,
+    0xd0, 0x5d, 0xf6, 0x18, 0x47, 0x1f, 0x1d, 0x67, 0xf2, 0xcf, 0x63, 0xa0,
+    0x91, 0x27, 0xf8, 0x93, 0x45, 0x75, 0x23, 0x3f, 0xd1, 0xf1, 0xad, 0x23,
+    0xdd, 0x64, 0x93, 0x96, 0x41, 0x70, 0x7f, 0xf7, 0xf5, 0xa9, 0x89, 0xa2,
+    0x34, 0xb0, 0x8d, 0x1b, 0xae, 0x19, 0x15, 0x49, 0x58, 0x23, 0x6d, 0x87,
+    0x15, 0x4f, 0x81, 0x76, 0xfb, 0x23, 0xb5, 0xea, 0xcf, 0xac, 0x54, 0x8d,
+    0x4e, 0x42, 0x2f, 0xeb, 0x0f, 0x63, 0xdb, 0x68, 0x37, 0xa8, 0xcf, 0x8b,
+    0xab, 0xf5, 0xa4, 0x6e, 0x96, 0x2a, 0xb2, 0xd6, 0xbe, 0x9e, 0xbd, 0x0d,
+    0xb4, 0x42, 0xa9, 0xcf, 0x01, 0x83, 0x8a, 0x17, 0x47, 0x76, 0xc4, 0xc6,
+    0x83, 0x04, 0x95, 0x0b, 0xfc, 0x11, 0xc9, 0x62, 0xb8, 0x0c, 0x76, 0x84,
+    0xd9, 0xb9, 0x37, 0xfa, 0xfc, 0x7c, 0xc2, 0x6d, 0x58, 0x3e, 0xb3, 0x04,
+    0xbb, 0x8c, 0x8f, 0x48, 0xbc, 0x91, 0x27, 0xcc, 0xf9, 0xb7, 0x22, 0x19,
+    0x83, 0x2e, 0x09, 0xb5, 0x72, 0xd9, 0x54, 0x1c, 0x4d, 0xa1, 0xea, 0x0b,
+    0xf1, 0xc6, 0x08, 0x72, 0x46, 0x87, 0x7a, 0x6e, 0x80, 0x56, 0x0a, 0x8a,
+    0xc0, 0xdd, 0x11, 0x6b, 0xd6, 0xdd, 0x47, 0xdf, 0x10, 0xd9, 0xd8, 0xea,
+    0x7c, 0xb0, 0x8f, 0x03, 0x00, 0x2e, 0xc1, 0x8f, 0x44, 0xa8, 0xd3, 0x30,
+    0x06, 0x89, 0xa2, 0xf9, 0x34, 0xad, 0xdc, 0x03, 0x85, 0xed, 0x51, 0xa7,
+    0x82, 0x9c, 0xe7, 0x5d, 0x52, 0x93, 0x0c, 0x32, 0x9a, 0x5b, 0xe1, 0xaa,
+    0xca, 0xb8, 0x02, 0x6d, 0x3a, 0xd4, 0xb1, 0x3a, 0xf0, 0x5f, 0xbe, 0xb5,
+    0x0d, 0x10, 0x6b, 0x38, 0x32, 0xac, 0x76, 0x80, 0xbd, 0xca, 0x94, 0x71,
+    0x7a, 0xf2, 0xc9, 0x35, 0x2a, 0xde, 0x9f, 0x42, 0x49, 0x18, 0x01, 0xab,
+    0xbc, 0xef, 0x7c, 0x64, 0x3f, 0x58, 0x3d, 0x92, 0x59, 0xdb, 0x13, 0xdb,
+    0x58, 0x6e, 0x0a, 0xe0, 0xb7, 0x91, 0x4a, 0x08, 0x20, 0xd6, 0x2e, 0x3c,
+    0x45, 0xc9, 0x8b, 0x17, 0x79, 0xe7, 0xc7, 0x90, 0x99, 0x3a, 0x18, 0x25,
+};
+
+#else
+
+// k25519Precomp[i][j] = (j+1)*256^i*B
+static const ge_precomp k25519Precomp[32][8] = {
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1288382639258501, 245678601348599, 269427782077623,
+                1462984067271730, 137412439391563
+#else
+                25967493, 19198397, 29566455, 3660896, 54414519, 4014786,
+                27544626, 21800161, 61029707, 2047604
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                62697248952638, 204681361388450, 631292143396476,
+                338455783676468, 1213667448819585
+#else
+                54563134, 934261, 64385954, 3049989, 66381436, 9406985,
+                12720692, 5043384, 19500929, 18085054
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                301289933810280, 1259582250014073, 1422107436869536,
+                796239922652654, 1953934009299142
+#else
+                58370664, 4489569, 9688441, 18769238, 10184608, 21191052,
+                29287918, 11864899, 42594502, 29115885
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1380971894829527, 790832306631236, 2067202295274102,
+                1995808275510000, 1566530869037010
+#else
+                54292951, 20578084, 45527620, 11784319, 41753206, 30803714,
+                55390960, 29739860, 66750418, 23343128
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                463307831301544, 432984605774163, 1610641361907204,
+                750899048855000, 1894842303421586
+#else
+                45405608, 6903824, 27185491, 6451973, 37531140, 24000426,
+                51492312, 11189267, 40279186, 28235350
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                748439484463711, 1033211726465151, 1396005112841647,
+                1611506220286469, 1972177495910992
+#else
+                26966623, 11152617, 32442495, 15396054, 14353839, 20802097,
+                63980037, 24013313, 51636816, 29387734
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1601611775252272, 1720807796594148, 1132070835939856,
+                1260455018889551, 2147779492816911
+#else
+                15636272, 23865875, 24204772, 25642034, 616976, 16869170,
+                27787599, 18782243, 28944399, 32004408
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                316559037616741, 2177824224946892, 1459442586438991,
+                1461528397712656, 751590696113597
+#else
+                16568933, 4717097, 55552716, 32452109, 15682895, 21747389,
+                16354576, 21778470, 7689661, 11199574
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1850748884277385, 1200145853858453, 1068094770532492,
+                672251375690438, 1586055907191707
+#else
+                30464137, 27578307, 55329429, 17883566, 23220364, 15915852,
+                7512774, 10017326, 49359771, 23634074
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                934282339813791, 1846903124198670, 1172395437954843,
+                1007037127761661, 1830588347719256
+#else
+                50071967, 13921891, 10945806, 27521001, 27105051, 17470053,
+                38182653, 15006022, 3284568, 27277892
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1694390458783935, 1735906047636159, 705069562067493,
+                648033061693059, 696214010414170
+#else
+                23599295, 25248385, 55915199, 25867015, 13236773, 10506355,
+                7464579, 9656445, 13059162, 10374397
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121406372216585, 192876649532226, 190294192191717,
+                1994165897297032, 2245000007398739
+#else
+                7798537, 16710257, 3033922, 2874086, 28997861, 2835604,
+                32406664, 29715387, 66467155, 33453106
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                769950342298419, 132954430919746, 844085933195555,
+                974092374476333, 726076285546016
+#else
+                10861363, 11473154, 27284546, 1981175, 37044515, 12577860,
+                32867885, 14515107, 51670560, 10819379
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                425251763115706, 608463272472562, 442562545713235,
+                837766094556764, 374555092627893
+#else
+                4708026, 6336745, 20377586, 9066809, 55836755, 6594695,
+                41455196, 12483687, 54440373, 5581305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1086255230780037, 274979815921559, 1960002765731872,
+                929474102396301, 1190409889297339
+#else
+                19563141, 16186464, 37722007, 4097518, 10237984, 29206317,
+                28542349, 13850243, 43430843, 17738489
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1388594989461809, 316767091099457, 394298842192982,
+                1230079486801005, 1440737038838979
+#else
+                51736881, 20691677, 32573249, 4720197, 40672342, 5875510,
+                47920237, 18329612, 57289923, 21468654
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                7380825640100, 146210432690483, 304903576448906,
+                1198869323871120, 997689833219095
+#else
+                58559652, 109982, 15149363, 2178705, 22900618, 4543417, 3044240,
+                17864545, 1762327, 14866737
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1181317918772081, 114573476638901, 262805072233344,
+                265712217171332, 294181933805782
+#else
+                48909169, 17603008, 56635573, 1707277, 49922944, 3916100,
+                38872452, 3959420, 27914454, 4383652
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665000864555967, 2065379846933859, 370231110385876,
+                350988370788628, 1233371373142985
+#else
+                5153727, 9909285, 1723747, 30776558, 30523604, 5516873,
+                19480852, 5230134, 43156425, 18378665
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2019367628972465, 676711900706637, 110710997811333,
+                1108646842542025, 517791959672113
+#else
+                36839857, 30090922, 7665485, 10083793, 28475525, 1649722,
+                20654025, 16520125, 30598449, 7715701
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                965130719900578, 247011430587952, 526356006571389,
+                91986625355052, 2157223321444601
+#else
+                28881826, 14381568, 9657904, 3680757, 46927229, 7843315,
+                35708204, 1370707, 29794553, 32145132
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2068619540119183, 1966274918058806, 957728544705549,
+                729906502578991, 159834893065166
+#else
+                14499471, 30824833, 33917750, 29299779, 28494861, 14271267,
+                30290735, 10876454, 33954766, 2381725
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2073601412052185, 31021124762708, 264500969797082,
+                248034690651703, 1030252227928288
+#else
+                59913433, 30899068, 52378708, 462250, 39384538, 3941371,
+                60872247, 3696004, 34808032, 15351954
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                551790716293402, 1989538725166328, 801169423371717,
+                2052451893578887, 678432056995012
+#else
+                27431194, 8222322, 16448760, 29646437, 48401861, 11938354,
+                34147463, 30583916, 29551812, 10109425
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1368953770187805, 790347636712921, 437508475667162,
+                2142576377050580, 1932081720066286
+#else
+                53451805, 20399000, 35825113, 11777097, 21447386, 6519384,
+                64730580, 31926875, 10092782, 28790261
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                953638594433374, 1092333936795051, 1419774766716690,
+                805677984380077, 859228993502513
+#else
+                27939166, 14210322, 4677035, 16277044, 44144402, 21156292,
+                34600109, 12005537, 49298737, 12803509
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1200766035879111, 20142053207432, 1465634435977050,
+                1645256912097844, 295121984874596
+#else
+                17228999, 17892808, 65875336, 300139, 65883994, 21839654,
+                30364212, 24516238, 18016356, 4397660
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1735718747031557, 1248237894295956, 1204753118328107,
+                976066523550493, 65943769534592
+#else
+                56150021, 25864224, 4776340, 18600194, 27850027, 17952220,
+                40489757, 14544524, 49631360, 982638
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1060098822528990, 1586825862073490, 212301317240126,
+                1975302711403555, 666724059764335
+#else
+                29253598, 15796703, 64244882, 23645547, 10057022, 3163536,
+                7332899, 29434304, 46061167, 9934962
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1091990273418756, 1572899409348578, 80968014455247,
+                306009358661350, 1520450739132526
+#else
+                5793284, 16271923, 42977250, 23438027, 29188559, 1206517,
+                52360934, 4559894, 36984942, 22656481
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1480517209436112, 1511153322193952, 1244343858991172,
+                304788150493241, 369136856496443
+#else
+                39464912, 22061425, 16282656, 22517939, 28414020, 18542168,
+                24191033, 4541697, 53770555, 5500567
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2151330273626164, 762045184746182, 1688074332551515,
+                823046109005759, 907602769079491
+#else
+                12650548, 32057319, 9052870, 11355358, 49428827, 25154267,
+                49678271, 12264342, 10874051, 13524335
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2047386910586836, 168470092900250, 1552838872594810,
+                340951180073789, 360819374702533
+#else
+                25556948, 30508442, 714650, 2510400, 23394682, 23139102,
+                33119037, 5080568, 44580805, 5376627
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1982622644432056, 2014393600336956, 128909208804214,
+                1617792623929191, 105294281913815
+#else
+                41020600, 29543379, 50095164, 30016803, 60382070, 1920896,
+                44787559, 24106988, 4535767, 1569007
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                980234343912898, 1712256739246056, 588935272190264,
+                204298813091998, 841798321043288
+#else
+                64853442, 14606629, 45416424, 25514613, 28430648, 8775819,
+                36614302, 3044289, 31848280, 12543772
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                197561292938973, 454817274782871, 1963754960082318,
+                2113372252160468, 971377527342673
+#else
+                45080285, 2943892, 35251351, 6777305, 13784462, 29262229,
+                39731668, 31491700, 7718481, 14474653
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                164699448829328, 3127451757672, 1199504971548753,
+                1766155447043652, 1899238924683527
+#else
+                2385296, 2454213, 44477544, 46602, 62670929, 17874016, 656964,
+                26317767, 24316167, 28300865
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                732262946680281, 1674412764227063, 2182456405662809,
+                1350894754474250, 558458873295247
+#else
+                13741529, 10911568, 33875447, 24950694, 46931033, 32521134,
+                33040650, 20129900, 46379407, 8321685
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2103305098582922, 1960809151316468, 715134605001343,
+                1454892949167181, 40827143824949
+#else
+                21060490, 31341688, 15712756, 29218333, 1639039, 10656336,
+                23845965, 21679594, 57124405, 608371
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1239289043050212, 1744654158124578, 758702410031698,
+                1796762995074688, 1603056663766
+#else
+                53436132, 18466845, 56219170, 25997372, 61071954, 11305546,
+                1123968, 26773855, 27229398, 23887
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2232056027107988, 987343914584615, 2115594492994461,
+                1819598072792159, 1119305654014850
+#else
+                43864724, 33260226, 55364135, 14712570, 37643165, 31524814,
+                12797023, 27114124, 65475458, 16678953
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                320153677847348, 939613871605645, 641883205761567,
+                1930009789398224, 329165806634126
+#else
+                37608244, 4770661, 51054477, 14001337, 7830047, 9564805,
+                65600720, 28759386, 49939598, 4904952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                980930490474130, 1242488692177893, 1251446316964684,
+                1086618677993530, 1961430968465772
+#else
+                24059538, 14617003, 19037157, 18514524, 19766092, 18648003,
+                5169210, 16191880, 2128236, 29227599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                276821765317453, 1536835591188030, 1305212741412361,
+                61473904210175, 2051377036983058
+#else
+                50127693, 4124965, 58568254, 22900634, 30336521, 19449185,
+                37302527, 916032, 60226322, 30567899
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                833449923882501, 1750270368490475, 1123347002068295,
+                185477424765687, 278090826653186
+#else
+                44477957, 12419371, 59974635, 26081060, 50629959, 16739174,
+                285431, 2763829, 15736322, 4143876
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                794524995833413, 1849907304548286, 53348672473145,
+                1272368559505217, 1147304168324779
+#else
+                2379333, 11839345, 62998462, 27565766, 11274297, 794957, 212801,
+                18959769, 23527083, 17096164
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1504846112759364, 1203096289004681, 562139421471418,
+                274333017451844, 1284344053775441
+#else
+                33431108, 22423954, 49269897, 17927531, 8909498, 8376530,
+                34483524, 4087880, 51919953, 19138217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                483048732424432, 2116063063343382, 30120189902313,
+                292451576741007, 1156379271702225
+#else
+                1767664, 7197987, 53903638, 31531796, 54017513, 448825, 5799055,
+                4357868, 62334673, 17231393
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                928372153029038, 2147692869914564, 1455665844462196,
+                1986737809425946, 185207050258089
+#else
+                6721966, 13833823, 43585476, 32003117, 26354292, 21691111,
+                23365146, 29604700, 7390889, 2759800
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                137732961814206, 706670923917341, 1387038086865771,
+                1965643813686352, 1384777115696347
+#else
+                4409022, 2052381, 23373853, 10530217, 7676779, 20668478,
+                21302352, 29290375, 1244379, 20634787
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                481144981981577, 2053319313589856, 2065402289827512,
+                617954271490316, 1106602634668125
+#else
+                62687625, 7169618, 4982368, 30596842, 30256824, 30776892,
+                14086412, 9208236, 15886429, 16489664
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                696298019648792, 893299659040895, 1148636718636009,
+                26734077349617, 2203955659340681
+#else
+                1996056, 10375649, 14346367, 13311202, 60234729, 17116020,
+                53415665, 398368, 36502409, 32841498
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                657390353372855, 998499966885562, 991893336905797,
+                810470207106761, 343139804608786
+#else
+                41801399, 9795879, 64331450, 14878808, 33577029, 14780362,
+                13348553, 12076947, 36272402, 5113181
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                791736669492960, 934767652997115, 824656780392914,
+                1759463253018643, 361530362383518
+#else
+                49338080, 11797795, 31950843, 13929123, 41220562, 12288343,
+                36767763, 26218045, 13847710, 5387222
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022541353055597, 2094700262587466, 1551008075025686,
+                242785517418164, 695985404963562
+#else
+                48526701, 30138214, 17824842, 31213466, 22744342, 23111821,
+                8763060, 3617786, 47508202, 10370990
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287487199965223, 2215311941380308, 1552928390931986,
+                1664859529680196, 1125004975265243
+#else
+                20246567, 19185054, 22358228, 33010720, 18507282, 23140436,
+                14554436, 24808340, 32232923, 16763880
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                677434665154918, 989582503122485, 1817429540898386,
+                1052904935475344, 1143826298169798
+#else
+                9648486, 10094563, 26416693, 14745928, 36734546, 27081810,
+                11094160, 15689506, 3140038, 17044340
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                367266328308408, 318431188922404, 695629353755355,
+                634085657580832, 24581612564426
+#else
+                50948792, 5472694, 31895588, 4744994, 8823515, 10365685,
+                39884064, 9448612, 38334410, 366294
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                773360688841258, 1815381330538070, 363773437667376,
+                539629987070205, 783280434248437
+#else
+                19153450, 11523972, 56012374, 27051289, 42461232, 5420646,
+                28344573, 8041113, 719605, 11671788
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                180820816194166, 168937968377394, 748416242794470,
+                1227281252254508, 1567587861004268
+#else
+                8678006, 2694440, 60300850, 2517371, 4964326, 11152271,
+                51675948, 18287915, 27000812, 23358879
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                478775558583645, 2062896624554807, 699391259285399,
+                358099408427873, 1277310261461761
+#else
+                51950941, 7134311, 8639287, 30739555, 59873175, 10421741,
+                564065, 5336097, 6750977, 19033406
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1984740906540026, 1079164179400229, 1056021349262661,
+                1659958556483663, 1088529069025527
+#else
+                11836410, 29574944, 26297893, 16080799, 23455045, 15735944,
+                1695823, 24735310, 8169719, 16220347
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                580736401511151, 1842931091388998, 1177201471228238,
+                2075460256527244, 1301133425678027
+#else
+                48993007, 8653646, 17578566, 27461813, 59083086, 17541668,
+                55964556, 30926767, 61118155, 19388398
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1515728832059182, 1575261009617579, 1510246567196186,
+                191078022609704, 116661716289141
+#else
+                43800366, 22586119, 15213227, 23473218, 36255258, 22504427,
+                27884328, 2847284, 2655861, 1738395
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295295738269652, 1714742313707026, 545583042462581,
+                2034411676262552, 1513248090013606
+#else
+                39571412, 19301410, 41772562, 25551651, 57738101, 8129820,
+                21651608, 30315096, 48021414, 22549153
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                230710545179830, 30821514358353, 760704303452229,
+                390668103790604, 573437871383156
+#else
+                1533110, 3437855, 23735889, 459276, 29970501, 11335377,
+                26030092, 5821408, 10478196, 8544890
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1169380107545646, 263167233745614, 2022901299054448,
+                819900753251120, 2023898464874585
+#else
+                32173102, 17425121, 24896206, 3921497, 22579056, 30143578,
+                19270448, 12217473, 17789017, 30158437
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102254323485823, 1570832666216754, 34696906544624,
+                1993213739807337, 70638552271463
+#else
+                36555903, 31326030, 51530034, 23407230, 13243888, 517024,
+                15479401, 29701199, 30460519, 1052596
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                894132856735058, 548675863558441, 845349339503395,
+                1942269668326667, 1615682209874691
+#else
+                55493970, 13323617, 32618793, 8175907, 51878691, 12596686,
+                27491595, 28942073, 3179267, 24075541
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287670217537834, 1222355136884920, 1846481788678694,
+                1150426571265110, 1613523400722047
+#else
+                31947050, 19187781, 62468280, 18214510, 51982886, 27514722,
+                52352086, 17142691, 19072639, 24043372
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                793388516527298, 1315457083650035, 1972286999342417,
+                1901825953052455, 338269477222410
+#else
+                11685058, 11822410, 3158003, 19601838, 33402193, 29389366,
+                5977895, 28339415, 473098, 5040608
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                550201530671806, 778605267108140, 2063911101902983,
+                115500557286349, 2041641272971022
+#else
+                46817982, 8198641, 39698732, 11602122, 1290375, 30754672,
+                28326861, 1721092, 47550222, 30422825
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                717255318455100, 519313764361315, 2080406977303708,
+                541981206705521, 774328150311600
+#else
+                7881532, 10687937, 7578723, 7738378, 48157852, 31000479,
+                21820785, 8076149, 39240368, 11538388
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                261715221532238, 1795354330069993, 1496878026850283,
+                499739720521052, 389031152673770
+#else
+                47173198, 3899860, 18283497, 26752864, 51380203, 22305220,
+                8754524, 7446702, 61432810, 5797015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1997217696294013, 1717306351628065, 1684313917746180,
+                1644426076011410, 1857378133465451
+#else
+                55813245, 29760862, 51326753, 25589858, 12708868, 25098233,
+                2014098, 24503858, 64739691, 27677090
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1475434724792648, 76931896285979, 1116729029771667,
+                2002544139318042, 725547833803938
+#else
+                44636488, 21985690, 39426843, 1146374, 18956691, 16640559,
+                1192730, 29840233, 15123618, 10811505
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022306639183567, 726296063571875, 315345054448644,
+                1058733329149221, 1448201136060677
+#else
+                14352079, 30134717, 48166819, 10822654, 32750596, 4699007,
+                67038501, 15776355, 38222085, 21579878
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1710065158525665, 1895094923036397, 123988286168546,
+                1145519900776355, 1607510767693874
+#else
+                38867681, 25481956, 62129901, 28239114, 29416930, 1847569,
+                46454691, 17069576, 4714546, 23953777
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                561605375422540, 1071733543815037, 131496498800990,
+                1946868434569999, 828138133964203
+#else
+                15200332, 8368572, 19679101, 15970074, 35236190, 1959450,
+                24611599, 29010600, 55362987, 12340219
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1548495173745801, 442310529226540, 998072547000384,
+                553054358385281, 644824326376171
+#else
+                12876937, 23074376, 33134380, 6590940, 60801088, 14872439,
+                9613953, 8241152, 15370987, 9608631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1445526537029440, 2225519789662536, 914628859347385,
+                1064754194555068, 1660295614401091
+#else
+                62965568, 21540023, 8446280, 33162829, 4407737, 13629032,
+                59383996, 15866073, 38898243, 24740332
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1199690223111956, 24028135822341, 66638289244341,
+                57626156285975, 565093967979607
+#else
+                26660628, 17876777, 8393733, 358047, 59707573, 992987, 43204631,
+                858696, 20571223, 8420556
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                876926774220824, 554618976488214, 1012056309841565,
+                839961821554611, 1414499340307677
+#else
+                14620696, 13067227, 51661590, 8264466, 14106269, 15080814,
+                33531827, 12516406, 45534429, 21077682
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                703047626104145, 1266841406201770, 165556500219173,
+                486991595001879, 1011325891650656
+#else
+                236881, 10476226, 57258, 18877408, 6472997, 2466984, 17258519,
+                7256740, 8791136, 15069930
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1622861044480487, 1156394801573634, 1869132565415504,
+                327103985777730, 2095342781472284
+#else
+                1276391, 24182514, 22949634, 17231625, 43615824, 27852245,
+                14711874, 4874229, 36445724, 31223040
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                334886927423922, 489511099221528, 129160865966726,
+                1720809113143481, 619700195649254
+#else
+                5855666, 4990204, 53397016, 7294283, 59304582, 1924646,
+                65685689, 25642053, 34039526, 9234252
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1646545795166119, 1758370782583567, 714746174550637,
+                1472693650165135, 898994790308209
+#else
+                20590503, 24535444, 31529743, 26201766, 64402029, 10650547,
+                31559055, 21944845, 18979185, 13396066
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                333403773039279, 295772542452938, 1693106465353610,
+                912330357530760, 471235657950362
+#else
+                24474287, 4968103, 22267082, 4407354, 24063882, 25229252,
+                48291976, 13594781, 33514650, 7021958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1811196219982022, 1068969825533602, 289602974833439,
+                1988956043611592, 863562343398367
+#else
+                55541958, 26988926, 45743778, 15928891, 40950559, 4315420,
+                41160136, 29637754, 45628383, 12868081
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                906282429780072, 2108672665779781, 432396390473936,
+                150625823801893, 1708930497638539
+#else
+                38473832, 13504660, 19988037, 31421671, 21078224, 6443208,
+                45662757, 2244499, 54653067, 25465048
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                925664675702328, 21416848568684, 1831436641861340,
+                601157008940113, 371818055044496
+#else
+                36513336, 13793478, 61256044, 319135, 41385692, 27290532,
+                33086545, 8957937, 51875216, 5540520
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1479786007267725, 1738881859066675, 68646196476567,
+                2146507056100328, 1247662817535471
+#else
+                55478669, 22050529, 58989363, 25911358, 2620055, 1022908,
+                43398120, 31985447, 50980335, 18591624
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                52035296774456, 939969390708103, 312023458773250,
+                59873523517659, 1231345905848899
+#else
+                23152952, 775386, 27395463, 14006635, 57407746, 4649511,
+                1689819, 892185, 55595587, 18348483
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                643355106415761, 290186807495774, 2013561737429023,
+                319648069511546, 393736678496162
+#else
+                9770129, 9586738, 26496094, 4324120, 1556511, 30004408,
+                27453818, 4763127, 47929250, 5867133
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                129358342392716, 1932811617704777, 1176749390799681,
+                398040349861790, 1170779668090425
+#else
+                34343820, 1927589, 31726409, 28801137, 23962433, 17534932,
+                27846558, 5931263, 37359161, 17445976
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2051980782668029, 121859921510665, 2048329875753063,
+                1235229850149665, 519062146124755
+#else
+                27461885, 30576896, 22380809, 1815854, 44075111, 30522493,
+                7283489, 18406359, 47582163, 7734628
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1608170971973096, 415809060360428, 1350468408164766,
+                2038620059057678, 1026904485989112
+#else
+                59098600, 23963614, 55988460, 6196037, 29344158, 20123547,
+                7585294, 30377806, 18549496, 15302069
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1837656083115103, 1510134048812070, 906263674192061,
+                1821064197805734, 565375124676301
+#else
+                34450527, 27383209, 59436070, 22502750, 6258877, 13504381,
+                10458790, 27135971, 58236621, 8424745
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                578027192365650, 2034800251375322, 2128954087207123,
+                478816193810521, 2196171989962750
+#else
+                24687186, 8613276, 36441818, 30320886, 1863891, 31723888,
+                19206233, 7134917, 55824382, 32725512
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1633188840273139, 852787172373708, 1548762607215796,
+                1266275218902681, 1107218203325133
+#else
+                11334899, 24336410, 8025292, 12707519, 17523892, 23078361,
+                10243737, 18868971, 62042829, 16498836
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                462189358480054, 1784816734159228, 1611334301651368,
+                1303938263943540, 707589560319424
+#else
+                8911542, 6887158, 57524604, 26595841, 11145640, 24010752,
+                17303924, 19430194, 6536640, 10543906
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1038829280972848, 38176604650029, 753193246598573,
+                1136076426528122, 595709990562434
+#else
+                38162480, 15479762, 49642029, 568875, 65611181, 11223453,
+                64439674, 16928857, 39873154, 8876770
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1408451820859834, 2194984964010833, 2198361797561729,
+                1061962440055713, 1645147963442934
+#else
+                41365946, 20987567, 51458897, 32707824, 34082177, 32758143,
+                33627041, 15824473, 66504438, 24514614
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                4701053362120, 1647641066302348, 1047553002242085,
+                1923635013395977, 206970314902065
+#else
+                10330056, 70051, 7957388, 24551765, 9764901, 15609756, 27698697,
+                28664395, 1657393, 3084098
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1750479161778571, 1362553355169293, 1891721260220598,
+                966109370862782, 1024913988299801
+#else
+                10477963, 26084172, 12119565, 20303627, 29016246, 28188843,
+                31280318, 14396151, 36875289, 15272408
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                212699049131723, 1117950018299775, 1873945661751056,
+                1403802921984058, 130896082652698
+#else
+                54820555, 3169462, 28813183, 16658753, 25116432, 27923966,
+                41934906, 20918293, 42094106, 1950503
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                636808533673210, 1262201711667560, 390951380330599,
+                1663420692697294, 561951321757406
+#else
+                40928506, 9489186, 11053416, 18808271, 36055143, 5825629,
+                58724558, 24786899, 15341278, 8373727
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                520731594438141, 1446301499955692, 273753264629267,
+                1565101517999256, 1019411827004672
+#else
+                28685821, 7759505, 52730348, 21551571, 35137043, 4079241,
+                298136, 23321830, 64230656, 15190419
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                926527492029409, 1191853477411379, 734233225181171,
+                184038887541270, 1790426146325343
+#else
+                34175969, 13806335, 52771379, 17760000, 43104243, 10940927,
+                8669718, 2742393, 41075551, 26679428
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1464651961852572, 1483737295721717, 1519450561335517,
+                1161429831763785, 405914998179977
+#else
+                65528476, 21825014, 41129205, 22109408, 49696989, 22641577,
+                9291593, 17306653, 54954121, 6048604
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996126634382301, 796204125879525, 127517800546509,
+                344155944689303, 615279846169038
+#else
+                36803549, 14843443, 1539301, 11864366, 20201677, 1900163,
+                13934231, 5128323, 11213262, 9168384
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                738724080975276, 2188666632415296, 1961313708559162,
+                1506545807547587, 1151301638969740
+#else
+                40828332, 11007846, 19408960, 32613674, 48515898, 29225851,
+                62020803, 22449281, 20470156, 17155731
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622917337413835, 1218989177089035, 1284857712846592,
+                970502061709359, 351025208117090
+#else
+                43972811, 9282191, 14855179, 18164354, 59746048, 19145871,
+                44324911, 14461607, 14042978, 5230683
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2067814584765580, 1677855129927492, 2086109782475197,
+                235286517313238, 1416314046739645
+#else
+                29969548, 30812838, 50396996, 25001989, 9175485, 31085458,
+                21556950, 3506042, 61174973, 21104723
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                586844262630358, 307444381952195, 458399356043426,
+                602068024507062, 1028548203415243
+#else
+                63964118, 8744660, 19704003, 4581278, 46678178, 6830682,
+                45824694, 8971512, 38569675, 15326562
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                678489922928203, 2016657584724032, 90977383049628,
+                1026831907234582, 615271492942522
+#else
+                47644235, 10110287, 49846336, 30050539, 43608476, 1355668,
+                51585814, 15300987, 46594746, 9168259
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                301225714012278, 1094837270268560, 1202288391010439,
+                644352775178361, 1647055902137983
+#else
+                61755510, 4488612, 43305616, 16314346, 7780487, 17915493,
+                38160505, 9601604, 33087103, 24543045
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1210746697896478, 1416608304244708, 686487477217856,
+                1245131191434135, 1051238336855737
+#else
+                47665694, 18041531, 46311396, 21109108, 37284416, 10229460,
+                39664535, 18553900, 61111993, 15664671
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1135604073198207, 1683322080485474, 769147804376683,
+                2086688130589414, 900445683120379
+#else
+                23294591, 16921819, 44458082, 25083453, 27844203, 11461195,
+                13099750, 31094076, 18151675, 13417686
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1971518477615628, 401909519527336, 448627091057375,
+                1409486868273821, 1214789035034363
+#else
+                42385932, 29377914, 35958184, 5988918, 40250079, 6685064,
+                1661597, 21002991, 15271675, 18101767
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1364039144731711, 1897497433586190, 2203097701135459,
+                145461396811251, 1349844460790699
+#else
+                11433023, 20325767, 8239630, 28274915, 65123427, 32828713,
+                48410099, 2167543, 60187563, 20114249
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1045230323257973, 818206601145807, 630513189076103,
+                1672046528998132, 807204017562437
+#else
+                35672693, 15575145, 30436815, 12192228, 44645511, 9395378,
+                57191156, 24915434, 12215109, 12028277
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                439961968385997, 386362664488986, 1382706320807688,
+                309894000125359, 2207801346498567
+#else
+                14098381, 6555944, 23007258, 5757252, 51681032, 20603929,
+                30123439, 4617780, 50208775, 32898803
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1229004686397588, 920643968530863, 123975893911178,
+                681423993215777, 1400559197080973
+#else
+                63082644, 18313596, 11893167, 13718664, 52299402, 1847384,
+                51288865, 10154008, 23973261, 20869958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2003766096898049, 170074059235165, 1141124258967971,
+                1485419893480973, 1573762821028725
+#else
+                40577025, 29858441, 65199965, 2534300, 35238307, 17004076,
+                18341389, 22134481, 32013173, 23450893
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                729905708611432, 1270323270673202, 123353058984288,
+                426460209632942, 2195574535456672
+#else
+                41629544, 10876442, 55337778, 18929291, 54739296, 1838103,
+                21911214, 6354752, 4425632, 32716610
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1271140255321235, 2044363183174497, 52125387634689,
+                1445120246694705, 942541986339084
+#else
+                56675475, 18941465, 22229857, 30463385, 53917697, 776728,
+                49693489, 21533969, 4725004, 14044970
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1761608437466135, 583360847526804, 1586706389685493,
+                2157056599579261, 1170692369685772
+#else
+                19268631, 26250011, 1555348, 8692754, 45634805, 23643767,
+                6347389, 32142648, 47586572, 17444675
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                871476219910823, 1878769545097794, 2241832391238412,
+                548957640601001, 690047440233174
+#else
+                42244775, 12986007, 56209986, 27995847, 55796492, 33405905,
+                19541417, 8180106, 9282262, 10282508
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                297194732135507, 1366347803776820, 1301185512245601,
+                561849853336294, 1533554921345731
+#else
+                40903763, 4428546, 58447668, 20360168, 4098401, 19389175,
+                15522534, 8372215, 5542595, 22851749
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                999628998628371, 1132836708493400, 2084741674517453,
+                469343353015612, 678782988708035
+#else
+                56546323, 14895632, 26814552, 16880582, 49628109, 31065071,
+                64326972, 6993760, 49014979, 10114654
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2189427607417022, 699801937082607, 412764402319267,
+                1478091893643349, 2244675696854460
+#else
+                47001790, 32625013, 31422703, 10427861, 59998115, 6150668,
+                38017109, 22025285, 25953724, 33448274
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1712292055966563, 204413590624874, 1405738637332841,
+                408981300829763, 861082219276721
+#else
+                62874467, 25515139, 57989738, 3045999, 2101609, 20947138,
+                19390019, 6094296, 63793585, 12831124
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                508561155940631, 966928475686665, 2236717801150132,
+                424543858577297, 2089272956986143
+#else
+                51110167, 7578151, 5310217, 14408357, 33560244, 33329692,
+                31575953, 6326196, 7381791, 31132593
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                221245220129925, 1156020201681217, 491145634799213,
+                542422431960839, 828100817819207
+#else
+                46206085, 3296810, 24736065, 17226043, 18374253, 7318640,
+                6295303, 8082724, 51746375, 12339663
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                153756971240384, 1299874139923977, 393099165260502,
+                1058234455773022, 996989038681183
+#else
+                27724736, 2291157, 6088201, 19369634, 1792726, 5857634,
+                13848414, 15768922, 25091167, 14856294
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                559086812798481, 573177704212711, 1629737083816402,
+                1399819713462595, 1646954378266038
+#else
+                48242193, 8331042, 24373479, 8541013, 66406866, 24284974,
+                12927299, 20858939, 44926390, 24541532
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1887963056288059, 228507035730124, 1468368348640282,
+                930557653420194, 613513962454686
+#else
+                55685435, 28132841, 11632844, 3405020, 30536730, 21880393,
+                39848098, 13866389, 30146206, 9142070
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1224529808187553, 1577022856702685, 2206946542980843,
+                625883007765001, 279930793512158
+#else
+                3924129, 18246916, 53291741, 23499471, 12291819, 32886066,
+                39406089, 9326383, 58871006, 4171293
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1076287717051609, 1114455570543035, 187297059715481,
+                250446884292121, 1885187512550540
+#else
+                51186905, 16037936, 6713787, 16606682, 45496729, 2790943,
+                26396185, 3731949, 345228, 28091483
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                902497362940219, 76749815795675, 1657927525633846,
+                1420238379745202, 1340321636548352
+#else
+                45781307, 13448258, 25284571, 1143661, 20614966, 24705045,
+                2031538, 21163201, 50855680, 19972348
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1129576631190784, 1281994010027327, 996844254743018,
+                257876363489249, 1150850742055018
+#else
+                31016192, 16832003, 26371391, 19103199, 62081514, 14854136,
+                17477601, 3842657, 28012650, 17149012
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                628740660038789, 1943038498527841, 467786347793886,
+                1093341428303375, 235413859513003
+#else
+                62033029, 9368965, 58546785, 28953529, 51858910, 6970559,
+                57918991, 16292056, 58241707, 3507939
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                237425418909360, 469614029179605, 1512389769174935,
+                1241726368345357, 441602891065214
+#else
+                29439664, 3537914, 23333589, 6997794, 49553303, 22536363,
+                51899661, 18503164, 57943934, 6580395
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1736417953058555, 726531315520508, 1833335034432527,
+                1629442561574747, 624418919286085
+#else
+                54923003, 25874643, 16438268, 10826160, 58412047, 27318820,
+                17860443, 24280586, 65013061, 9304566
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1960754663920689, 497040957888962, 1909832851283095,
+                1271432136996826, 2219780368020940
+#else
+                20714545, 29217521, 29088194, 7406487, 11426967, 28458727,
+                14792666, 18945815, 5289420, 33077305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1537037379417136, 1358865369268262, 2130838645654099,
+                828733687040705, 1999987652890901
+#else
+                50443312, 22903641, 60948518, 20248671, 9192019, 31751970,
+                17271489, 12349094, 26939669, 29802138
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                629042105241814, 1098854999137608, 887281544569320,
+                1423102019874777, 7911258951561
+#else
+                54218966, 9373457, 31595848, 16374215, 21471720, 13221525,
+                39825369, 21205872, 63410057, 117886
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1811562332665373, 1501882019007673, 2213763501088999,
+                359573079719636, 36370565049116
+#else
+                22263325, 26994382, 3984569, 22379786, 51994855, 32987646,
+                28311252, 5358056, 43789084, 541963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                218907117361280, 1209298913016966, 1944312619096112,
+                1130690631451061, 1342327389191701
+#else
+                16259200, 3261970, 2309254, 18019958, 50223152, 28972515,
+                24134069, 16848603, 53771797, 20002236
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1369976867854704, 1396479602419169, 1765656654398856,
+                2203659200586299, 998327836117241
+#else
+                9378160, 20414246, 44262881, 20809167, 28198280, 26310334,
+                64709179, 32837080, 690425, 14876244
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2230701885562825, 1348173180338974, 2172856128624598,
+                1426538746123771, 444193481326151
+#else
+                24977353, 33240048, 58884894, 20089345, 28432342, 32378079,
+                54040059, 21257083, 44727879, 6618998
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                784210426627951, 918204562375674, 1284546780452985,
+                1324534636134684, 1872449409642708
+#else
+                65570671, 11685645, 12944378, 13682314, 42719353, 19141238,
+                8044828, 19737104, 32239828, 27901670
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                319638829540294, 596282656808406, 2037902696412608,
+                1557219121643918, 341938082688094
+#else
+                48505798, 4762989, 66182614, 8885303, 38696384, 30367116,
+                9781646, 23204373, 32779358, 5095274
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1901860206695915, 2004489122065736, 1625847061568236,
+                973529743399879, 2075287685312905
+#else
+                34100715, 28339925, 34843976, 29869215, 9460460, 24227009,
+                42507207, 14506723, 21639561, 30924196
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1371853944110545, 1042332820512553, 1949855697918254,
+                1791195775521505, 37487364849293
+#else
+                50707921, 20442216, 25239337, 15531969, 3987758, 29055114,
+                65819361, 26690896, 17874573, 558605
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                687200189577855, 1082536651125675, 644224940871546,
+                340923196057951, 343581346747396
+#else
+                53508735, 10240080, 9171883, 16131053, 46239610, 9599699,
+                33499487, 5080151, 2085892, 5119761
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2082717129583892, 27829425539422, 145655066671970,
+                1690527209845512, 1865260509673478
+#else
+                44903700, 31034903, 50727262, 414690, 42089314, 2170429,
+                30634760, 25190818, 35108870, 27794547
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1059729620568824, 2163709103470266, 1440302280256872,
+                1769143160546397, 869830310425069
+#else
+                60263160, 15791201, 8550074, 32241778, 29928808, 21462176,
+                27534429, 26362287, 44757485, 12961481
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1609516219779025, 777277757338817, 2101121130363987,
+                550762194946473, 1905542338659364
+#else
+                42616785, 23983660, 10368193, 11582341, 43711571, 31309144,
+                16533929, 8206996, 36914212, 28394793
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2024821921041576, 426948675450149, 595133284085473,
+                471860860885970, 600321679413000
+#else
+                55987368, 30172197, 2307365, 6362031, 66973409, 8868176,
+                50273234, 7031274, 7589640, 8945490
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                598474602406721, 1468128276358244, 1191923149557635,
+                1501376424093216, 1281662691293476
+#else
+                34956097, 8917966, 6661220, 21876816, 65916803, 17761038,
+                7251488, 22372252, 24099108, 19098262
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1721138489890707, 1264336102277790, 433064545421287,
+                1359988423149466, 1561871293409447
+#else
+                5019539, 25646962, 4244126, 18840076, 40175591, 6453164,
+                47990682, 20265406, 60876967, 23273695
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                719520245587143, 393380711632345, 132350400863381,
+                1543271270810729, 1819543295798660
+#else
+                10853575, 10721687, 26480089, 5861829, 44113045, 1972174,
+                65242217, 22996533, 63745412, 27113307
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                396397949784152, 1811354474471839, 1362679985304303,
+                2117033964846756, 498041172552279
+#else
+                50106456, 5906789, 221599, 26991285, 7828207, 20305514,
+                24362660, 31546264, 53242455, 7421391
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1812471844975748, 1856491995543149, 126579494584102,
+                1036244859282620, 1975108050082550
+#else
+                8139908, 27007935, 32257645, 27663886, 30375718, 1886181,
+                45933756, 15441251, 28826358, 29431403
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                650623932407995, 1137551288410575, 2125223403615539,
+                1725658013221271, 2134892965117796
+#else
+                6267067, 9695052, 7709135, 16950835, 34239795, 31668296,
+                14795159, 25714308, 13746020, 31812384
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                522584000310195, 1241762481390450, 1743702789495384,
+                2227404127826575, 1686746002148897
+#else
+                28584883, 7787108, 60375922, 18503702, 22846040, 25983196,
+                63926927, 33190907, 4771361, 25134474
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                427904865186312, 1703211129693455, 1585368107547509,
+                1436984488744336, 761188534613978
+#else
+                24949256, 6376279, 39642383, 25379823, 48462709, 23623825,
+                33543568, 21412737, 3569626, 11342593
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                318101947455002, 248138407995851, 1481904195303927,
+                309278454311197, 1258516760217879
+#else
+                26514970, 4740088, 27912651, 3697550, 19331575, 22082093,
+                6809885, 4608608, 7325975, 18753361
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1275068538599310, 513726919533379, 349926553492294,
+                688428871968420, 1702400196000666
+#else
+                55490446, 19000001, 42787651, 7655127, 65739590, 5214311,
+                39708324, 10258389, 49462170, 25367739
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1061864036265233, 961611260325381, 321859632700838,
+                1045600629959517, 1985130202504038
+#else
+                11431185, 15823007, 26570245, 14329124, 18029990, 4796082,
+                35662685, 15580663, 9280358, 29580745
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1558816436882417, 1962896332636523, 1337709822062152,
+                1501413830776938, 294436165831932
+#else
+                66948081, 23228174, 44253547, 29249434, 46247496, 19933429,
+                34297962, 22372809, 51563772, 4387440
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                818359826554971, 1862173000996177, 626821592884859,
+                573655738872376, 1749691246745455
+#else
+                46309467, 12194511, 3937617, 27748540, 39954043, 9340369,
+                42594872, 8548136, 20617071, 26072431
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1988022651432119, 1082111498586040, 1834020786104821,
+                1454826876423687, 692929915223122
+#else
+                66170039, 29623845, 58394552, 16124717, 24603125, 27329039,
+                53333511, 21678609, 24345682, 10325460
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2146513703733331, 584788900394667, 464965657279958,
+                2183973639356127, 238371159456790
+#else
+                47253587, 31985546, 44906155, 8714033, 14007766, 6928528,
+                16318175, 32543743, 4766742, 3552007
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1129007025494441, 2197883144413266, 265142755578169,
+                971864464758890, 1983715884903702
+#else
+                45357481, 16823515, 1351762, 32751011, 63099193, 3950934,
+                3217514, 14481909, 10988822, 29559670
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1291366624493075, 381456718189114, 1711482489312444,
+                1815233647702022, 892279782992467
+#else
+                15564307, 19242862, 3101242, 5684148, 30446780, 25503076,
+                12677126, 27049089, 58813011, 13296004
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                444548969917454, 1452286453853356, 2113731441506810,
+                645188273895859, 810317625309512
+#else
+                57666574, 6624295, 36809900, 21640754, 62437882, 31497052,
+                31521203, 9614054, 37108040, 12074673
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2242724082797924, 1373354730327868, 1006520110883049,
+                2147330369940688, 1151816104883620
+#else
+                4771172, 33419193, 14290748, 20464580, 27992297, 14998318,
+                65694928, 31997715, 29832612, 17163397
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1745720200383796, 1911723143175317, 2056329390702074,
+                355227174309849, 879232794371100
+#else
+                7064884, 26013258, 47946901, 28486894, 48217594, 30641695,
+                25825241, 5293297, 39986204, 13101589
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                163723479936298, 115424889803150, 1156016391581227,
+                1894942220753364, 1970549419986329
+#else
+                64810282, 2439669, 59642254, 1719964, 39841323, 17225986,
+                32512468, 28236839, 36752793, 29363474
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                681981452362484, 267208874112496, 1374683991933094,
+                638600984916117, 646178654558546
+#else
+                37102324, 10162315, 33928688, 3981722, 50626726, 20484387,
+                14413973, 9515896, 19568978, 9628812
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                13378654854251, 106237307029567, 1944412051589651,
+                1841976767925457, 230702819835573
+#else
+                33053803, 199357, 15894591, 1583059, 27380243, 28973997,
+                49269969, 27447592, 60817077, 3437739
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                260683893467075, 854060306077237, 913639551980112,
+                4704576840123, 280254810808712
+#else
+                48129987, 3884492, 19469877, 12726490, 15913552, 13614290,
+                44147131, 70103, 7463304, 4176122
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                715374893080287, 1173334812210491, 1806524662079626,
+                1894596008000979, 398905715033393
+#else
+                39984863, 10659916, 11482427, 17484051, 12771466, 26919315,
+                34389459, 28231680, 24216881, 5944158
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                500026409727661, 1596431288195371, 1420380351989370,
+                985211561521489, 392444930785633
+#else
+                8894125, 7450974, 64444715, 23788679, 39028346, 21165316,
+                19345745, 14680796, 11632993, 5847885
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2096421546958141, 1922523000950363, 789831022876840,
+                427295144688779, 320923973161730
+#else
+                26942781, 31239115, 9129563, 28647825, 26024104, 11769399,
+                55590027, 6367193, 57381634, 4782139
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1927770723575450, 1485792977512719, 1850996108474547,
+                551696031508956, 2126047405475647
+#else
+                19916442, 28726022, 44198159, 22140040, 25606323, 27581991,
+                33253852, 8220911, 6358847, 31680575
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2112099158080148, 742570803909715, 6484558077432,
+                1951119898618916, 93090382703416
+#else
+                801428, 31472730, 16569427, 11065167, 29875704, 96627, 7908388,
+                29073952, 53570360, 1387154
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                383905201636970, 859946997631870, 855623867637644,
+                1017125780577795, 794250831877809
+#else
+                19646058, 5720633, 55692158, 12814208, 11607948, 12749789,
+                14147075, 15156355, 45242033, 11835259
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                77571826285752, 999304298101753, 487841111777762,
+                1038031143212339, 339066367948762
+#else
+                19299512, 1155910, 28703737, 14890794, 2925026, 7269399,
+                26121523, 15467869, 40548314, 5052482
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                674994775520533, 266035846330789, 826951213393478,
+                1405007746162285, 1781791018620876
+#else
+                64091413, 10058205, 1980837, 3964243, 22160966, 12322533,
+                60677741, 20936246, 12228556, 26550755
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1001412661522686, 348196197067298, 1666614366723946,
+                888424995032760, 580747687801357
+#else
+                32944382, 14922211, 44263970, 5188527, 21913450, 24834489,
+                4001464, 13238564, 60994061, 8653814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1939560076207777, 1409892634407635, 552574736069277,
+                383854338280405, 190706709864139
+#else
+                22865569, 28901697, 27603667, 21009037, 14348957, 8234005,
+                24808405, 5719875, 28483275, 2841751
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2177087163428741, 1439255351721944, 1208070840382793,
+                2230616362004769, 1396886392021913
+#else
+                50687877, 32441126, 66781144, 21446575, 21886281, 18001658,
+                65220897, 33238773, 19932057, 20815229
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                676962063230039, 1880275537148808, 2046721011602706,
+                888463247083003, 1318301552024067
+#else
+                55452759, 10087520, 58243976, 28018288, 47830290, 30498519,
+                3999227, 13239134, 62331395, 19644223
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1466980508178206, 617045217998949, 652303580573628,
+                757303753529064, 207583137376902
+#else
+                1382174, 21859713, 17266789, 9194690, 53784508, 9720080,
+                20403944, 11284705, 53095046, 3093229
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1511056752906902, 105403126891277, 493434892772846,
+                1091943425335976, 1802717338077427
+#else
+                16650902, 22516500, 66044685, 1570628, 58779118, 7352752,
+                66806440, 16271224, 43059443, 26862581
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1853982405405128, 1878664056251147, 1528011020803992,
+                1019626468153565, 1128438412189035
+#else
+                45197768, 27626490, 62497547, 27994275, 35364760, 22769138,
+                24123613, 15193618, 45456747, 16815042
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1963939888391106, 293456433791664, 697897559513649,
+                985882796904380, 796244541237972
+#else
+                57172930, 29264984, 41829040, 4372841, 2087473, 10399484,
+                31870908, 14690798, 17361620, 11864968
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                416770998629779, 389655552427054, 1314476859406756,
+                1749382513022778, 1161905598739491
+#else
+                55801235, 6210371, 13206574, 5806320, 38091172, 19587231,
+                54777658, 26067830, 41530403, 17313742
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1428358296490651, 1027115282420478, 304840698058337,
+                441410174026628, 1819358356278573
+#else
+                14668443, 21284197, 26039038, 15305210, 25515617, 4542480,
+                10453892, 6577524, 9145645, 27110552
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                204943430200135, 1554861433819175, 216426658514651,
+                264149070665950, 2047097371738319
+#else
+                5974855, 3053895, 57675815, 23169240, 35243739, 3225008,
+                59136222, 3936127, 61456591, 30504127
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1934415182909034, 1393285083565062, 516409331772960,
+                1157690734993892, 121039666594268
+#else
+                30625386, 28825032, 41552902, 20761565, 46624288, 7695098,
+                17097188, 17250936, 39109084, 1803631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                662035583584445, 286736105093098, 1131773000510616,
+                818494214211439, 472943792054479
+#else
+                63555773, 9865098, 61880298, 4272700, 61435032, 16864731,
+                14911343, 12196514, 45703375, 7047411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665784778135882, 1893179629898606, 808313193813106,
+                276797254706413, 1563426179676396
+#else
+                20093258, 9920966, 55970670, 28210574, 13161586, 12044805,
+                34252013, 4124600, 34765036, 23296865
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                945205108984232, 526277562959295, 1324180513733566,
+                1666970227868664, 153547609289173
+#else
+                46320040, 14084653, 53577151, 7842146, 19119038, 19731827,
+                4752376, 24839792, 45429205, 2288037
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2031433403516252, 203996615228162, 170487168837083,
+                981513604791390, 843573964916831
+#else
+                40289628, 30270716, 29965058, 3039786, 52635099, 2540456,
+                29457502, 14625692, 42289247, 12570231
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1476570093962618, 838514669399805, 1857930577281364,
+                2017007352225784, 317085545220047
+#else
+                66045306, 22002608, 16920317, 12494842, 1278292, 27685323,
+                45948920, 30055751, 55134159, 4724942
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1461557121912842, 1600674043318359, 2157134900399597,
+                1670641601940616, 127765583803283
+#else
+                17960970, 21778898, 62967895, 23851901, 58232301, 32143814,
+                54201480, 24894499, 37532563, 1903855
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1293543509393474, 2143624609202546, 1058361566797508,
+                214097127393994, 946888515472729
+#else
+                23134274, 19275300, 56426866, 31942495, 20684484, 15770816,
+                54119114, 3190295, 26955097, 14109738
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                357067959932916, 1290876214345711, 521245575443703,
+                1494975468601005, 800942377643885
+#else
+                15308788, 5320727, 36995055, 19235554, 22902007, 7767164,
+                29425325, 22276870, 31960941, 11934971
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                566116659100033, 820247422481740, 994464017954148,
+                327157611686365, 92591318111744
+#else
+                39713153, 8435795, 4109644, 12222639, 42480996, 14818668,
+                20638173, 4875028, 10491392, 1379718
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                617256647603209, 1652107761099439, 1857213046645471,
+                1085597175214970, 817432759830522
+#else
+                53949449, 9197840, 3875503, 24618324, 65725151, 27674630,
+                33518458, 16176658, 21432314, 12180697
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                771808161440705, 1323510426395069, 680497615846440,
+                851580615547985, 1320806384849017
+#else
+                55321537, 11500837, 13787581, 19721842, 44678184, 10140204,
+                1465425, 12689540, 56807545, 19681548
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1219260086131915, 647169006596815, 79601124759706,
+                2161724213426748, 404861897060198
+#else
+                5414091, 18168391, 46101199, 9643569, 12834970, 1186149,
+                64485948, 32212200, 26128230, 6032912
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1327968293887866, 1335500852943256, 1401587164534264,
+                558137311952440, 1551360549268902
+#else
+                40771450, 19788269, 32496024, 19900513, 17847800, 20885276,
+                3604024, 8316894, 41233830, 23117073
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                417621685193956, 1429953819744454, 396157358457099,
+                1940470778873255, 214000046234152
+#else
+                3296484, 6223048, 24680646, 21307972, 44056843, 5903204,
+                58246567, 28915267, 12376616, 3188849
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1268047918491973, 2172375426948536, 1533916099229249,
+                1761293575457130, 1590622667026765
+#else
+                29190469, 18895386, 27549112, 32370916, 3520065, 22857131,
+                32049514, 26245319, 50999629, 23702124
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1627072914981959, 2211603081280073, 1912369601616504,
+                1191770436221309, 2187309757525860
+#else
+                52364359, 24245275, 735817, 32955454, 46701176, 28496527,
+                25246077, 17758763, 18640740, 32593455
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1149147819689533, 378692712667677, 828475842424202,
+                2218619146419342, 70688125792186
+#else
+                60180029, 17123636, 10361373, 5642961, 4910474, 12345252,
+                35470478, 33060001, 10530746, 1053335
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1299739417079761, 1438616663452759, 1536729078504412,
+                2053896748919838, 1008421032591246
+#else
+                37842897, 19367626, 53570647, 21437058, 47651804, 22899047,
+                35646494, 30605446, 24018830, 15026644
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2040723824657366, 399555637875075, 632543375452995,
+                872649937008051, 1235394727030233
+#else
+                44516310, 30409154, 64819587, 5953842, 53668675, 9425630,
+                25310643, 13003497, 64794073, 18408815
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2211311599327900, 2139787259888175, 938706616835350,
+                12609661139114, 2081897930719789
+#else
+                39688860, 32951110, 59064879, 31885314, 41016598, 13987818,
+                39811242, 187898, 43942445, 31022696
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1324994503390450, 336982330582631, 1183998925654177,
+                1091654665913274, 48727673971319
+#else
+                45364466, 19743956, 1844839, 5021428, 56674465, 17642958,
+                9716666, 16266922, 62038647, 726098
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1845522914617879, 1222198248335542, 150841072760134,
+                1927029069940982, 1189913404498011
+#else
+                29370903, 27500434, 7334070, 18212173, 9385286, 2247707,
+                53446902, 28714970, 30007387, 17731091
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1079559557592645, 2215338383666441, 1903569501302605,
+                49033973033940, 305703433934152
+#else
+                66172485, 16086690, 23751945, 33011114, 65941325, 28365395,
+                9137108, 730663, 9835848, 4555336
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                94653405416909, 1386121349852999, 1062130477891762,
+                36553947479274, 833669648948846
+#else
+                43732429, 1410445, 44855111, 20654817, 30867634, 15826977,
+                17693930, 544696, 55123566, 12422645
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1432015813136298, 440364795295369, 1395647062821501,
+                1976874522764578, 934452372723352
+#else
+                31117226, 21338698, 53606025, 6561946, 57231997, 20796761,
+                61990178, 29457725, 29120152, 13924425
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1296625309219774, 2068273464883862, 1858621048097805,
+                1492281814208508, 2235868981918946
+#else
+                49707966, 19321222, 19675798, 30819676, 56101901, 27695611,
+                57724924, 22236731, 7240930, 33317044
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1490330266465570, 1858795661361448, 1436241134969763,
+                294573218899647, 1208140011028933
+#else
+                35747106, 22207651, 52101416, 27698213, 44655523, 21401660,
+                1222335, 4389483, 3293637, 18002689
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1282462923712748, 741885683986255, 2027754642827561,
+                518989529541027, 1826610009555945
+#else
+                50424044, 19110186, 11038543, 11054958, 53307689, 30215898,
+                42789283, 7733546, 12796905, 27218610
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1525827120027511, 723686461809551, 1597702369236987,
+                244802101764964, 1502833890372311
+#else
+                58349431, 22736595, 41689999, 10783768, 36493307, 23807620,
+                38855524, 3647835, 3222231, 22393970
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                113622036244513, 1233740067745854, 674109952278496,
+                2114345180342965, 166764512856263
+#else
+                18606113, 1693100, 41660478, 18384159, 4112352, 10045021,
+                23603893, 31506198, 59558087, 2484984
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2041668749310338, 2184405322203901, 1633400637611036,
+                2110682505536899, 2048144390084644
+#else
+                9255298, 30423235, 54952701, 32550175, 13098012, 24339566,
+                16377219, 31451620, 47306788, 30519729
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                503058759232932, 760293024620937, 2027152777219493,
+                666858468148475, 1539184379870952
+#else
+                44379556, 7496159, 61366665, 11329248, 19991973, 30206930,
+                35390715, 9936965, 37011176, 22935634
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1916168475367211, 915626432541343, 883217071712575,
+                363427871374304, 1976029821251593
+#else
+                21878571, 28553135, 4338335, 13643897, 64071999, 13160959,
+                19708896, 5415497, 59748361, 29445138
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                678039535434506, 570587290189340, 1605302676614120,
+                2147762562875701, 1706063797091704
+#else
+                27736842, 10103576, 12500508, 8502413, 63695848, 23920873,
+                10436917, 32004156, 43449720, 25422331
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1439489648586438, 2194580753290951, 832380563557396,
+                561521973970522, 584497280718389
+#else
+                19492550, 21450067, 37426887, 32701801, 63900692, 12403436,
+                30066266, 8367329, 13243957, 8709688
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                187989455492609, 681223515948275, 1933493571072456,
+                1872921007304880, 488162364135671
+#else
+                12015105, 2801261, 28198131, 10151021, 24818120, 28811299,
+                55914672, 27908697, 5150967, 7274186
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1413466089534451, 410844090765630, 1397263346404072,
+                408227143123410, 1594561803147811
+#else
+                2831347, 21062286, 1478974, 6122054, 23825128, 20820846,
+                31097298, 6083058, 31021603, 23760822
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102170800973153, 719462588665004, 1479649438510153,
+                1097529543970028, 1302363283777685
+#else
+                64578913, 31324785, 445612, 10720828, 53259337, 22048494,
+                43601132, 16354464, 15067285, 19406725
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                942065717847195, 1069313679352961, 2007341951411051,
+                70973416446291, 1419433790163706
+#else
+                7840923, 14037873, 33744001, 15934015, 66380651, 29911725,
+                21403987, 1057586, 47729402, 21151211
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1146565545556377, 1661971299445212, 406681704748893,
+                564452436406089, 1109109865829139
+#else
+                915865, 17085158, 15608284, 24765302, 42751837, 6060029,
+                49737545, 8410996, 59888403, 16527024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2214421081775077, 1165671861210569, 1890453018796184,
+                3556249878661, 442116172656317
+#else
+                32922597, 32997445, 20336073, 17369864, 10903704, 28169945,
+                16957573, 52992, 23834301, 6588044
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                753830546620811, 1666955059895019, 1530775289309243,
+                1119987029104146, 2164156153857580
+#else
+                32752011, 11232950, 3381995, 24839566, 22652987, 22810329,
+                17159698, 16689107, 46794284, 32248439
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                615171919212796, 1523849404854568, 854560460547503,
+                2067097370290715, 1765325848586042
+#else
+                62419196, 9166775, 41398568, 22707125, 11576751, 12733943,
+                7924251, 30802151, 1976122, 26305405
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1094538949313667, 1796592198908825, 870221004284388,
+                2025558921863561, 1699010892802384
+#else
+                21251203, 16309901, 64125849, 26771309, 30810596, 12967303,
+                156041, 30183180, 12331344, 25317235
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1951351290725195, 1916457206844795, 198025184438026,
+                1909076887557595, 1938542290318919
+#else
+                8651595, 29077400, 51023227, 28557437, 13002506, 2950805,
+                29054427, 28447462, 10008135, 28886531
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1014323197538413, 869150639940606, 1756009942696599,
+                1334952557375672, 1544945379082874
+#else
+                31486061, 15114593, 52847614, 12951353, 14369431, 26166587,
+                16347320, 19892343, 8684154, 23021480
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                764055910920305, 1603590757375439, 146805246592357,
+                1843313433854297, 954279890114939
+#else
+                19443825, 11385320, 24468943, 23895364, 43189605, 2187568,
+                40845657, 27467510, 31316347, 14219878
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                80113526615750, 764536758732259, 1055139345100233,
+                469252651759390, 617897512431515
+#else
+                38514374, 1193784, 32245219, 11392485, 31092169, 15722801,
+                27146014, 6992409, 29126555, 9207390
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                74497112547268, 740094153192149, 1745254631717581,
+                727713886503130, 1283034364416928
+#else
+                32382916, 1110093, 18477781, 11028262, 39697101, 26006320,
+                62128346, 10843781, 59151264, 19118701
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                525892105991110, 1723776830270342, 1476444848991936,
+                573789489857760, 133864092632978
+#else
+                2814918, 7836403, 27519878, 25686276, 46214848, 22000742,
+                45614304, 8550129, 28346258, 1994730
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                542611720192581, 1986812262899321, 1162535242465837,
+                481498966143464, 544600533583622
+#else
+                47530565, 8085544, 53108345, 29605809, 2785837, 17323125,
+                47591912, 7174893, 22628102, 8115180
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                64123227344372, 1239927720647794, 1360722983445904,
+                222610813654661, 62429487187991
+#else
+                36703732, 955510, 55975026, 18476362, 34661776, 20276352,
+                41457285, 3317159, 57165847, 930271
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1793193323953132, 91096687857833, 70945970938921,
+                2158587638946380, 1537042406482111
+#else
+                51805164, 26720662, 28856489, 1357446, 23421993, 1057177,
+                24091212, 32165462, 44343487, 22903716
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1895854577604609, 1394895708949416, 1728548428495944,
+                1140864900240149, 563645333603061
+#else
+                44357633, 28250434, 54201256, 20785565, 51297352, 25757378,
+                52269845, 17000211, 65241845, 8398969
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                141358280486863, 91435889572504, 1087208572552643,
+                1829599652522921, 1193307020643647
+#else
+                35139535, 2106402, 62372504, 1362500, 12813763, 16200670,
+                22981545, 27263159, 18009407, 17781660
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1611230858525381, 950720175540785, 499589887488610,
+                2001656988495019, 88977313255908
+#else
+                49887941, 24009210, 39324209, 14166834, 29815394, 7444469,
+                29551787, 29827013, 19288548, 1325865
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1189080501479658, 2184348804772597, 1040818725742319,
+                2018318290311834, 1712060030915354
+#else
+                15100138, 17718680, 43184885, 32549333, 40658671, 15509407,
+                12376730, 30075286, 33166106, 25511682
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                873966876953756, 1090638350350440, 1708559325189137,
+                672344594801910, 1320437969700239
+#else
+                20909212, 13023121, 57899112, 16251777, 61330449, 25459517,
+                12412150, 10018715, 2213263, 19676059
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1508590048271766, 1131769479776094, 101550868699323,
+                428297785557897, 561791648661744
+#else
+                32529814, 22479743, 30361438, 16864679, 57972923, 1513225,
+                22922121, 6382134, 61341936, 8371347
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                756417570499462, 237882279232602, 2136263418594016,
+                1701968045454886, 703713185137472
+#else
+                9923462, 11271500, 12616794, 3544722, 37110496, 31832805,
+                12891686, 25361300, 40665920, 10486143
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1781187809325462, 1697624151492346, 1381393690939988,
+                175194132284669, 1483054666415238
+#else
+                44511638, 26541766, 8587002, 25296571, 4084308, 20584370,
+                361725, 2610596, 43187334, 22099236
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2175517777364616, 708781536456029, 955668231122942,
+                1967557500069555, 2021208005604118
+#else
+                5408392, 32417741, 62139741, 10561667, 24145918, 14240566,
+                31319731, 29318891, 19985174, 30118346
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115135966606887, 224217372950782, 915967306279222,
+                593866251291540, 561747094208006
+#else
+                53114407, 16616820, 14549246, 3341099, 32155958, 13648976,
+                49531796, 8849296, 65030, 8370684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1443163092879439, 391875531646162, 2180847134654632,
+                464538543018753, 1594098196837178
+#else
+                58787919, 21504805, 31204562, 5839400, 46481576, 32497154,
+                47665921, 6922163, 12743482, 23753914
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                850858855888869, 319436476624586, 327807784938441,
+                740785849558761, 17128415486016
+#else
+                64747493, 12678784, 28815050, 4759974, 43215817, 4884716,
+                23783145, 11038569, 18800704, 255233
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2132756334090067, 536247820155645, 48907151276867,
+                608473197600695, 1261689545022784
+#else
+                61839187, 31780545, 13957885, 7990715, 23132995, 728773,
+                13393847, 9066957, 19258688, 18800639
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1525176236978354, 974205476721062, 293436255662638,
+                148269621098039, 137961998433963
+#else
+                64172210, 22726896, 56676774, 14516792, 63468078, 4372540,
+                35173943, 2209389, 65584811, 2055793
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121075518299410, 2071745529082111, 1265567917414828,
+                1648196578317805, 496232102750820
+#else
+                580882, 16705327, 5468415, 30871414, 36182444, 18858431,
+                59905517, 24560042, 37087844, 7394434
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                122321229299801, 1022922077493685, 2001275453369484,
+                2017441881607947, 993205880778002
+#else
+                23838809, 1822728, 51370421, 15242726, 8318092, 29821328,
+                45436683, 30062226, 62287122, 14799920
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                654925550560074, 1168810995576858, 575655959430926,
+                905758704861388, 496774564663534
+#else
+                13345610, 9759151, 3371034, 17416641, 16353038, 8577942,
+                31129804, 13496856, 58052846, 7402517
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1954109525779738, 2117022646152485, 338102630417180,
+                1194140505732026, 107881734943492
+#else
+                2286874, 29118501, 47066405, 31546095, 53412636, 5038121,
+                11006906, 17794080, 8205060, 1607563
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1714785840001267, 2036500018681589, 1876380234251966,
+                2056717182974196, 1645855254384642
+#else
+                14414067, 25552300, 3331829, 30346215, 22249150, 27960244,
+                18364660, 30647474, 30019586, 24525154
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                106431476499341, 62482972120563, 1513446655109411,
+                807258751769522, 538491469114
+#else
+                39420813, 1585952, 56333811, 931068, 37988643, 22552112,
+                52698034, 12029092, 9944378, 8024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2002850762893643, 1243624520538135, 1486040410574605,
+                2184752338181213, 378495998083531
+#else
+                4368715, 29844802, 29874199, 18531449, 46878477, 22143727,
+                50994269, 32555346, 58966475, 5640029
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                922510868424903, 1089502620807680, 402544072617374,
+                1131446598479839, 1290278588136533
+#else
+                10299591, 13746483, 11661824, 16234854, 7630238, 5998374,
+                9809887, 16859868, 15219797, 19226649
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1867998812076769, 715425053580701, 39968586461416,
+                2173068014586163, 653822651801304
+#else
+                27425505, 27835351, 3055005, 10660664, 23458024, 595578,
+                51710259, 32381236, 48766680, 9742716
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                162892278589453, 182585796682149, 75093073137630,
+                497037941226502, 133871727117371
+#else
+                6744077, 2427284, 26042789, 2720740, 66260958, 1118973,
+                32324614, 7406442, 12420155, 1994844
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1914596576579670, 1608999621851578, 1987629837704609,
+                1519655314857977, 1819193753409464
+#else
+                14012502, 28529712, 48724410, 23975962, 40623521, 29617992,
+                54075385, 22644628, 24319928, 27108099
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1949315551096831, 1069003344994464, 1939165033499916,
+                1548227205730856, 1933767655861407
+#else
+                16412671, 29047065, 10772640, 15929391, 50040076, 28895810,
+                10555944, 23070383, 37006495, 28815383
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1730519386931635, 1393284965610134, 1597143735726030,
+                416032382447158, 1429665248828629
+#else
+                22397363, 25786748, 57815702, 20761563, 17166286, 23799296,
+                39775798, 6199365, 21880021, 21303672
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                360275475604565, 547835731063078, 215360904187529,
+                596646739879007, 332709650425085
+#else
+                62825557, 5368522, 35991846, 8163388, 36785801, 3209127,
+                16557151, 8890729, 8840445, 4957760
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47602113726801, 1522314509708010, 437706261372925,
+                814035330438027, 335930650933545
+#else
+                51661137, 709326, 60189418, 22684253, 37330941, 6522331,
+                45388683, 12130071, 52312361, 5005756
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1291597595523886, 1058020588994081, 402837842324045,
+                1363323695882781, 2105763393033193
+#else
+                64994094, 19246303, 23019041, 15765735, 41839181, 6002751,
+                10183197, 20315106, 50713577, 31378319
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                109521982566564, 1715257748585139, 1112231216891516,
+                2046641005101484, 134249157157013
+#else
+                48083108, 1632004, 13466291, 25559332, 43468412, 16573536,
+                35094956, 30497327, 22208661, 2000468
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2156991030936798, 2227544497153325, 1869050094431622,
+                754875860479115, 1754242344267058
+#else
+                3065054, 32141671, 41510189, 33192999, 49425798, 27851016,
+                58944651, 11248526, 63417650, 26140247
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1846089562873800, 98894784984326, 1412430299204844,
+                171351226625762, 1100604760929008
+#else
+                10379208, 27508878, 8877318, 1473647, 37817580, 21046851,
+                16690914, 2553332, 63976176, 16400288
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                84172382130492, 499710970700046, 425749630620778,
+                1762872794206857, 612842602127960
+#else
+                15716668, 1254266, 48636174, 7446273, 58659946, 6344163,
+                45011593, 26268851, 26894936, 9132066
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                868309334532756, 1703010512741873, 1952690008738057,
+                4325269926064, 2071083554962116
+#else
+                24158868, 12938817, 11085297, 25376834, 39045385, 29097348,
+                36532400, 64451, 60291780, 30861549
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                523094549451158, 401938899487815, 1407690589076010,
+                2022387426254453, 158660516411257
+#else
+                13488534, 7794716, 22236231, 5989356, 25426474, 20976224,
+                2350709, 30135921, 62420857, 2364225
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                612867287630009, 448212612103814, 571629077419196,
+                1466796750919376, 1728478129663858
+#else
+                16335033, 9132434, 25640582, 6678888, 1725628, 8517937,
+                55301840, 21856974, 15445874, 25756331
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1723848973783452, 2208822520534681, 1718748322776940,
+                1974268454121942, 1194212502258141
+#else
+                29004188, 25687351, 28661401, 32914020, 54314860, 25611345,
+                31863254, 29418892, 66830813, 17795152
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1254114807944608, 977770684047110, 2010756238954993,
+                1783628927194099, 1525962994408256
+#else
+                60986784, 18687766, 38493958, 14569918, 56250865, 29962602,
+                10343411, 26578142, 37280576, 22738620
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                232464058235826, 1948628555342434, 1835348780427694,
+                1031609499437291, 64472106918373
+#else
+                27081650, 3463984, 14099042, 29036828, 1616302, 27348828,
+                29542635, 15372179, 17293797, 960709
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                767338676040683, 754089548318405, 1523192045639075,
+                435746025122062, 512692508440385
+#else
+                20263915, 11434237, 61343429, 11236809, 13505955, 22697330,
+                50997518, 6493121, 47724353, 7639713
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1255955808701983, 1700487367990941, 1166401238800299,
+                1175121994891534, 1190934801395380
+#else
+                64278047, 18715199, 25403037, 25339236, 58791851, 17380732,
+                18006286, 17510682, 29994676, 17746311
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                349144008168292, 1337012557669162, 1475912332999108,
+                1321618454900458, 47611291904320
+#else
+                9769828, 5202651, 42951466, 19923039, 39057860, 21992807,
+                42495722, 19693649, 35924288, 709463
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                877519947135419, 2172838026132651, 272304391224129,
+                1655143327559984, 886229406429814
+#else
+                12286395, 13076066, 45333675, 32377809, 42105665, 4057651,
+                35090736, 24663557, 16102006, 13205847
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                375806028254706, 214463229793940, 572906353144089,
+                572168269875638, 697556386112979
+#else
+                13733362, 5599946, 10557076, 3195751, 61550873, 8536969,
+                41568694, 8525971, 10151379, 10394400
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1168827102357844, 823864273033637, 2071538752104697,
+                788062026895924, 599578340743362
+#else
+                4024660, 17416881, 22436261, 12276534, 58009849, 30868332,
+                19698228, 11743039, 33806530, 8934413
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1948116082078088, 2054898304487796, 2204939184983900,
+                210526805152138, 786593586607626
+#else
+                51229064, 29029191, 58528116, 30620370, 14634844, 32856154,
+                57659786, 3137093, 55571978, 11721157
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1915320147894736, 156481169009469, 655050471180417,
+                592917090415421, 2165897438660879
+#else
+                17555920, 28540494, 8268605, 2331751, 44370049, 9761012,
+                9319229, 8835153, 57903375, 32274386
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1726336468579724, 1119932070398949, 1929199510967666,
+                33918788322959, 1836837863503150
+#else
+                66647436, 25724417, 20614117, 16688288, 59594098, 28747312,
+                22300303, 505429, 6108462, 27371017
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                829996854845988, 217061778005138, 1686565909803640,
+                1346948817219846, 1723823550730181
+#else
+                62038564, 12367916, 36445330, 3234472, 32617080, 25131790,
+                29880582, 20071101, 40210373, 25686972
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                384301494966394, 687038900403062, 2211195391021739,
+                254684538421383, 1245698430589680
+#else
+                35133562, 5726538, 26934134, 10237677, 63935147, 32949378,
+                24199303, 3795095, 7592688, 18562353
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1247567493562688, 1978182094455847, 183871474792955,
+                806570235643435, 288461518067916
+#else
+                21594432, 18590204, 17466407, 29477210, 32537083, 2739898,
+                6407723, 12018833, 38852812, 4298411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1449077384734201, 38285445457996, 2136537659177832,
+                2146493000841573, 725161151123125
+#else
+                46458361, 21592935, 39872588, 570497, 3767144, 31836892,
+                13891941, 31985238, 13717173, 10805743
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1201928866368855, 800415690605445, 1703146756828343,
+                997278587541744, 1858284414104014
+#else
+                52432215, 17910135, 15287173, 11927123, 24177847, 25378864,
+                66312432, 14860608, 40169934, 27690595
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                356468809648877, 782373916933152, 1718002439402870,
+                1392222252219254, 663171266061951
+#else
+                12962541, 5311799, 57048096, 11658279, 18855286, 25600231,
+                13286262, 20745728, 62727807, 9882021
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                759628738230460, 1012693474275852, 353780233086498,
+                246080061387552, 2030378857679162
+#else
+                18512060, 11319350, 46985740, 15090308, 18818594, 5271736,
+                44380960, 3666878, 43141434, 30255002
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2040672435071076, 888593182036908, 1298443657189359,
+                1804780278521327, 354070726137060
+#else
+                60319844, 30408388, 16192428, 13241070, 15898607, 19348318,
+                57023983, 26893321, 64705764, 5276064
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1894938527423184, 1463213041477277, 474410505497651,
+                247294963033299, 877975941029128
+#else
+                30169808, 28236784, 26306205, 21803573, 27814963, 7069267,
+                7152851, 3684982, 1449224, 13082861
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                207937160991127, 12966911039119, 820997788283092,
+                1010440472205286, 1701372890140810
+#else
+                10342807, 3098505, 2119311, 193222, 25702612, 12233820,
+                23697382, 15056736, 46092426, 25352431
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                218882774543183, 533427444716285, 1233243976733245,
+                435054256891319, 1509568989549904
+#else
+                33958735, 3261607, 22745853, 7948688, 19370557, 18376767,
+                40936887, 6482813, 56808784, 22494330
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1888838535711826, 1052177758340622, 1213553803324135,
+                169182009127332, 463374268115872
+#else
+                32869458, 28145887, 25609742, 15678670, 56421095, 18083360,
+                26112420, 2521008, 44444576, 6904814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                299137589460312, 1594371588983567, 868058494039073,
+                257771590636681, 1805012993142921
+#else
+                29506904, 4457497, 3377935, 23757988, 36598817, 12935079,
+                1561737, 3841096, 38105225, 26896789
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1806842755664364, 2098896946025095, 1356630998422878,
+                1458279806348064, 347755825962072
+#else
+                10340844, 26924055, 48452231, 31276001, 12621150, 20215377,
+                30878496, 21730062, 41524312, 5181965
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1402334161391744, 1560083671046299, 1008585416617747,
+                1147797150908892, 1420416683642459
+#else
+                25940096, 20896407, 17324187, 23247058, 58437395, 15029093,
+                24396252, 17103510, 64786011, 21165857
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665506704253369, 273770475169863, 799236974202630,
+                848328990077558, 1811448782807931
+#else
+                45343161, 9916822, 65808455, 4079497, 66080518, 11909558,
+                1782390, 12641087, 20603771, 26992690
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1468412523962641, 771866649897997, 1931766110147832,
+                799561180078482, 524837559150077
+#else
+                48226577, 21881051, 24849421, 11501709, 13161720, 28785558,
+                1925522, 11914390, 4662781, 7820689
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2223212657821850, 630416247363666, 2144451165500328,
+                816911130947791, 1024351058410032
+#else
+                12241050, 33128450, 8132690, 9393934, 32846760, 31954812,
+                29749455, 12172924, 16136752, 15264020
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1266603897524861, 156378408858100, 1275649024228779,
+                447738405888420, 253186462063095
+#else
+                56758909, 18873868, 58896884, 2330219, 49446315, 19008651,
+                10658212, 6671822, 19012087, 3772772
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022215964509735, 136144366993649, 1800716593296582,
+                1193970603800203, 871675847064218
+#else
+                3753511, 30133366, 10617073, 2028709, 14841030, 26832768,
+                28718731, 17791548, 20527770, 12988982
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1862751661970328, 851596246739884, 1519315554814041,
+                1542798466547449, 1417975335901520
+#else
+                52286360, 27757162, 63400876, 12689772, 66209881, 22639565,
+                42925817, 22989488, 3299664, 21129479
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1228168094547481, 334133883362894, 587567568420081,
+                433612590281181, 603390400373205
+#else
+                50331161, 18301130, 57466446, 4978982, 3308785, 8755439,
+                6943197, 6461331, 41525717, 8991217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                121893973206505, 1843345804916664, 1703118377384911,
+                497810164760654, 101150811654673
+#else
+                49882601, 1816361, 65435576, 27467992, 31783887, 25378441,
+                34160718, 7417949, 36866577, 1507264
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                458346255946468, 290909935619344, 1452768413850679,
+                550922875254215, 1537286854336538
+#else
+                29692644, 6829891, 56610064, 4334895, 20945975, 21647936,
+                38221255, 8209390, 14606362, 22907359
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                584322311184395, 380661238802118, 114839394528060,
+                655082270500073, 2111856026034852
+#else
+                63627275, 8707080, 32188102, 5672294, 22096700, 1711240,
+                34088169, 9761486, 4170404, 31469107
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996965581008991, 2148998626477022, 1012273164934654,
+                1073876063914522, 1688031788934939
+#else
+                55521375, 14855944, 62981086, 32022574, 40459774, 15084045,
+                22186522, 16002000, 52832027, 25153633
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                923487018849600, 2085106799623355, 528082801620136,
+                1606206360876188, 735907091712524
+#else
+                62297408, 13761028, 35404987, 31070512, 63796392, 7869046,
+                59995292, 23934339, 13240844, 10965870
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1697697887804317, 1335343703828273, 831288615207040,
+                949416685250051, 288760277392022
+#else
+                59366301, 25297669, 52340529, 19898171, 43876480, 12387165,
+                4498947, 14147411, 29514390, 4302863
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1419122478109648, 1325574567803701, 602393874111094,
+                2107893372601700, 1314159682671307
+#else
+                53695440, 21146572, 20757301, 19752600, 14785142, 8976368,
+                62047588, 31410058, 17846987, 19582505
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2201150872731804, 2180241023425241, 97663456423163,
+                1633405770247824, 848945042443986
+#else
+                64864412, 32799703, 62511833, 32488122, 60861691, 1455298,
+                45461136, 24339642, 61886162, 12650266
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1173339555550611, 818605084277583, 47521504364289,
+                924108720564965, 735423405754506
+#else
+                57202067, 17484121, 21134159, 12198166, 40044289, 708125,
+                387813, 13770293, 47974538, 10958662
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                830104860549448, 1886653193241086, 1600929509383773,
+                1475051275443631, 286679780900937
+#else
+                22470984, 12369526, 23446014, 28113323, 45588061, 23855708,
+                55336367, 21979976, 42025033, 4271861
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1577111294832995, 1030899169768747, 144900916293530,
+                1964672592979567, 568390100955250
+#else
+                41939299, 23500789, 47199531, 15361594, 61124506, 2159191,
+                75375, 29275903, 34582642, 8469672
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                278388655910247, 487143369099838, 927762205508727,
+                181017540174210, 1616886700741287
+#else
+                15854951, 4148314, 58214974, 7259001, 11666551, 13824734,
+                36577666, 2697371, 24154791, 24093489
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1191033906638969, 940823957346562, 1606870843663445,
+                861684761499847, 658674867251089
+#else
+                15446137, 17747788, 29759746, 14019369, 30811221, 23944241,
+                35526855, 12840103, 24913809, 9815020
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1875032594195546, 1427106132796197, 724736390962158,
+                901860512044740, 635268497268760
+#else
+                62399578, 27940162, 35267365, 21265538, 52665326, 10799413,
+                58005188, 13438768, 18735128, 9466238
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622869792298357, 1903919278950367, 1922588621661629,
+                1520574711600434, 1087100760174640
+#else
+                11933045, 9281483, 5081055, 28370608, 64480701, 28648802,
+                59381042, 22658328, 44380208, 16199063
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                25465949416618, 1693639527318811, 1526153382657203,
+                125943137857169, 145276964043999
+#else
+                14576810, 379472, 40322331, 25237195, 37682355, 22741457,
+                67006097, 1876698, 30801119, 2164795
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                214739857969358, 920212862967915, 1939901550972269,
+                1211862791775221, 85097515720120
+#else
+                15995086, 3199873, 13672555, 13712240, 47730029, 28906785,
+                54027253, 18058162, 53616056, 1268051
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2006245852772938, 734762734836159, 254642929763427,
+                1406213292755966, 239303749517686
+#else
+                56818250, 29895392, 63822271, 10948817, 23037027, 3794475,
+                63638526, 20954210, 50053494, 3565903
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1619678837192149, 1919424032779215, 1357391272956794,
+                1525634040073113, 1310226789796241
+#else
+                29210069, 24135095, 61189071, 28601646, 10834810, 20226706,
+                50596761, 22733718, 39946641, 19523900
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1040763709762123, 1704449869235352, 605263070456329,
+                1998838089036355, 1312142911487502
+#else
+                53946955, 15508587, 16663704, 25398282, 38758921, 9019122,
+                37925443, 29785008, 2244110, 19552453
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1996723311435669, 1844342766567060, 985455700466044,
+                1165924681400960, 311508689870129
+#else
+                61955989, 29753495, 57802388, 27482848, 16243068, 14684434,
+                41435776, 17373631, 13491505, 4641841
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                43173156290518, 2202883069785309, 1137787467085917,
+                1733636061944606, 1394992037553852
+#else
+                10813398, 643330, 47920349, 32825515, 30292061, 16954354,
+                27548446, 25833190, 14476988, 20787001
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                670078326344559, 555655025059356, 471959386282438,
+                2141455487356409, 849015953823125
+#else
+                10292079, 9984945, 6481436, 8279905, 59857350, 7032742,
+                27282937, 31910173, 39196053, 12651323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2197214573372804, 794254097241315, 1030190060513737,
+                267632515541902, 2040478049202624
+#else
+                35923332, 32741048, 22271203, 11835308, 10201545, 15351028,
+                17099662, 3988035, 21721536, 30405492
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1812516004670529, 1609256702920783, 1706897079364493,
+                258549904773295, 996051247540686
+#else
+                10202177, 27008593, 35735631, 23979793, 34958221, 25434748,
+                54202543, 3852693, 13216206, 14842320
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1540374301420584, 1764656898914615, 1810104162020396,
+                923808779163088, 664390074196579
+#else
+                51293224, 22953365, 60569911, 26295436, 60124204, 26972653,
+                35608016, 13765823, 39674467, 9900183
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1323460699404750, 1262690757880991, 871777133477900,
+                1060078894988977, 1712236889662886
+#else
+                14465486, 19721101, 34974879, 18815558, 39665676, 12990491,
+                33046193, 15796406, 60056998, 25514317
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1696163952057966, 1391710137550823, 608793846867416,
+                1034391509472039, 1780770894075012
+#else
+                30924398, 25274812, 6359015, 20738097, 16508376, 9071735,
+                41620263, 15413634, 9524356, 26535554
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1367603834210841, 2131988646583224, 890353773628144,
+                1908908219165595, 270836895252891
+#else
+                12274201, 20378885, 32627640, 31769106, 6736624, 13267305,
+                5237659, 28444949, 15663515, 4035784
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                597536315471731, 40375058742586, 1942256403956049,
+                1185484645495932, 312666282024145
+#else
+                64157555, 8903984, 17349946, 601635, 50676049, 28941875,
+                53376124, 17665097, 44850385, 4659090
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1919411405316294, 1234508526402192, 1066863051997083,
+                1008444703737597, 1348810787701552
+#else
+                50192582, 28601458, 36715152, 18395610, 20774811, 15897498,
+                5736189, 15026997, 64930608, 20098846
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2102881477513865, 1570274565945361, 1573617900503708,
+                18662635732583, 2232324307922098
+#else
+                58249865, 31335375, 28571665, 23398914, 66634396, 23448733,
+                63307367, 278094, 23440562, 33264224
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1853931367696942, 8107973870707, 350214504129299,
+                775206934582587, 1752317649166792
+#else
+                10226222, 27625730, 15139955, 120818, 52241171, 5218602,
+                32937275, 11551483, 50536904, 26111567
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1417148368003523, 721357181628282, 505725498207811,
+                373232277872983, 261634707184480
+#else
+                17932739, 21117156, 43069306, 10749059, 11316803, 7535897,
+                22503767, 5561594, 63462240, 3898660
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2186733281493267, 2250694917008620, 1014829812957440,
+                479998161452389, 83566193876474
+#else
+                7749907, 32584865, 50769132, 33537967, 42090752, 15122142,
+                65535333, 7152529, 21831162, 1245233
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1268116367301224, 560157088142809, 802626839600444,
+                2210189936605713, 1129993785579988
+#else
+                26958440, 18896406, 4314585, 8346991, 61431100, 11960071,
+                34519569, 32934396, 36706772, 16838219
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                615183387352312, 917611676109240, 878893615973325,
+                978940963313282, 938686890583575
+#else
+                54942968, 9166946, 33491384, 13673479, 29787085, 13096535,
+                6280834, 14587357, 44770839, 13987524
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                522024729211672, 1045059315315808, 1892245413707790,
+                1907891107684253, 2059998109500714
+#else
+                42758936, 7778774, 21116000, 15572597, 62275598, 28196653,
+                62807965, 28429792, 59639082, 30696363
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1799679152208884, 912132775900387, 25967768040979,
+                432130448590461, 274568990261996
+#else
+                9681908, 26817309, 35157219, 13591837, 60225043, 386949,
+                31622781, 6439245, 52527852, 4091396
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                98698809797682, 2144627600856209, 1907959298569602,
+                811491302610148, 1262481774981493
+#else
+                58682418, 1470726, 38999185, 31957441, 3978626, 28430809,
+                47486180, 12092162, 29077877, 18812444
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1791451399743152, 1713538728337276, 118349997257490,
+                1882306388849954, 158235232210248
+#else
+                5269168, 26694706, 53878652, 25533716, 25932562, 1763552,
+                61502754, 28048550, 47091016, 2357888
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1217809823321928, 2173947284933160, 1986927836272325,
+                1388114931125539, 12686131160169
+#else
+                32264008, 18146780, 61721128, 32394338, 65017541, 29607531,
+                23104803, 20684524, 5727337, 189038
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1650875518872272, 1136263858253897, 1732115601395988,
+                734312880662190, 1252904681142109
+#else
+                14609104, 24599962, 61108297, 16931650, 52531476, 25810533,
+                40363694, 10942114, 41219933, 18669734
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                372986456113865, 525430915458171, 2116279931702135,
+                501422713587815, 1907002872974925
+#else
+                20513481, 5557931, 51504251, 7829530, 26413943, 31535028,
+                45729895, 7471780, 13913677, 28416557
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                803147181835288, 868941437997146, 316299302989663,
+                943495589630550, 571224287904572
+#else
+                41534488, 11967825, 29233242, 12948236, 60354399, 4713226,
+                58167894, 14059179, 12878652, 8511905
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                227742695588364, 1776969298667369, 628602552821802,
+                457210915378118, 2041906378111140
+#else
+                41452044, 3393630, 64153449, 26478905, 64858154, 9366907,
+                36885446, 6812973, 5568676, 30426776
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                815000523470260, 913085688728307, 1052060118271173,
+                1345536665214223, 541623413135555
+#else
+                11630004, 12144454, 2116339, 13606037, 27378885, 15676917,
+                49700111, 20050058, 52713667, 8070817
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1580216071604333, 1877997504342444, 857147161260913,
+                703522726778478, 2182763974211603
+#else
+                27117677, 23547054, 35826092, 27984343, 1127281, 12772488,
+                37262958, 10483305, 55556115, 32525717
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1870080310923419, 71988220958492, 1783225432016732,
+                615915287105016, 1035570475990230
+#else
+                10637467, 27866368, 5674780, 1072708, 40765276, 26572129,
+                65424888, 9177852, 39615702, 15431202
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                730987750830150, 857613889540280, 1083813157271766,
+                1002817255970169, 1719228484436074
+#else
+                20525126, 10892566, 54366392, 12779442, 37615830, 16150074,
+                38868345, 14943141, 52052074, 25618500
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                377616581647602, 1581980403078513, 804044118130621,
+                2034382823044191, 643844048472185
+#else
+                37084402, 5626925, 66557297, 23573344, 753597, 11981191,
+                25244767, 30314666, 63752313, 9594023
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                176957326463017, 1573744060478586, 528642225008045,
+                1816109618372371, 1515140189765006
+#else
+                43356201, 2636869, 61944954, 23450613, 585133, 7877383,
+                11345683, 27062142, 13352334, 22577348
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1888911448245718, 1387110895611080, 1924503794066429,
+                1731539523700949, 2230378382645454
+#else
+                65177046, 28146973, 3304648, 20669563, 17015805, 28677341,
+                37325013, 25801949, 53893326, 33235227
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                443392177002051, 233793396845137, 2199506622312416,
+                1011858706515937, 974676837063129
+#else
+                20239939, 6607058, 6203985, 3483793, 48721888, 32775202,
+                46385121, 15077869, 44358105, 14523816
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1846351103143623, 1949984838808427, 671247021915253,
+                1946756846184401, 1929296930380217
+#else
+                27406023, 27512775, 27423595, 29057038, 4996213, 10002360,
+                38266833, 29008937, 36936121, 28748764
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                849646212452002, 1410198775302919, 73767886183695,
+                1641663456615812, 762256272452411
+#else
+                11374242, 12660715, 17861383, 21013599, 10935567, 1099227,
+                53222788, 24462691, 39381819, 11358503
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                692017667358279, 723305578826727, 1638042139863265,
+                748219305990306, 334589200523901
+#else
+                54378055, 10311866, 1510375, 10778093, 64989409, 24408729,
+                32676002, 11149336, 40985213, 4985767
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                22893968530686, 2235758574399251, 1661465835630252,
+                925707319443452, 1203475116966621
+#else
+                48012542, 341146, 60911379, 33315398, 15756972, 24757770,
+                66125820, 13794113, 47694557, 17933176
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                801299035785166, 1733292596726131, 1664508947088596,
+                467749120991922, 1647498584535623
+#else
+                6490062, 11940286, 25495923, 25828072, 8668372, 24803116,
+                3367602, 6970005, 65417799, 24549641
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                903105258014366, 427141894933047, 561187017169777,
+                1884330244401954, 1914145708422219
+#else
+                1656478, 13457317, 15370807, 6364910, 13605745, 8362338,
+                47934242, 28078708, 50312267, 28522993
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1344191060517578, 1960935031767890, 1518838929955259,
+                1781502350597190, 1564784025565682
+#else
+                44835530, 20030007, 67044178, 29220208, 48503227, 22632463,
+                46537798, 26546453, 67009010, 23317098
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                673723351748086, 1979969272514923, 1175287312495508,
+                1187589090978666, 1881897672213940
+#else
+                17747446, 10039260, 19368299, 29503841, 46478228, 17513145,
+                31992682, 17696456, 37848500, 28042460
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1917185587363432, 1098342571752737, 5935801044414,
+                2000527662351839, 1538640296181569
+#else
+                31932008, 28568291, 47496481, 16366579, 22023614, 88450,
+                11371999, 29810185, 4882241, 22927527
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2495540013192, 678856913479236, 224998292422872,
+                219635787698590, 1972465269000940
+#else
+                29796488, 37186, 19818052, 10115756, 55279832, 3352735,
+                18551198, 3272828, 61917932, 29392022
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                271413961212179, 1353052061471651, 344711291283483,
+                2014925838520662, 2006221033113941
+#else
+                12501267, 4044383, 58495907, 20162046, 34678811, 5136598,
+                47878486, 30024734, 330069, 29895023
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                194583029968109, 514316781467765, 829677956235672,
+                1676415686873082, 810104584395840
+#else
+                6384877, 2899513, 17807477, 7663917, 64749976, 12363164,
+                25366522, 24980540, 66837568, 12071498
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1980510813313589, 1948645276483975, 152063780665900,
+                129968026417582, 256984195613935
+#else
+                58743349, 29511910, 25133447, 29037077, 60897836, 2265926,
+                34339246, 1936674, 61949167, 3829362
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1860190562533102, 1936576191345085, 461100292705964,
+                1811043097042830, 957486749306835
+#else
+                28425966, 27718999, 66531773, 28857233, 52891308, 6870929,
+                7921550, 26986645, 26333139, 14267664
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                796664815624365, 1543160838872951, 1500897791837765,
+                1667315977988401, 599303877030711
+#else
+                56041645, 11871230, 27385719, 22994888, 62522949, 22365119,
+                10004785, 24844944, 45347639, 8930323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1151480509533204, 2136010406720455, 738796060240027,
+                319298003765044, 1150614464349587
+#else
+                45911060, 17158396, 25654215, 31829035, 12282011, 11008919,
+                1541940, 4757911, 40617363, 17145491
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1731069268103150, 735642447616087, 1364750481334268,
+                417232839982871, 927108269127661
+#else
+                13537262, 25794942, 46504023, 10961926, 61186044, 20336366,
+                53952279, 6217253, 51165165, 13814989
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1017222050227968, 1987716148359, 2234319589635701,
+                621282683093392, 2132553131763026
+#else
+                49686272, 15157789, 18705543, 29619, 24409717, 33293956,
+                27361680, 9257833, 65152338, 31777517
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1567828528453324, 1017807205202360, 565295260895298,
+                829541698429100, 307243822276582
+#else
+                42063564, 23362465, 15366584, 15166509, 54003778, 8423555,
+                37937324, 12361134, 48422886, 4578289
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                249079270936248, 1501514259790706, 947909724204848,
+                944551802437487, 552658763982480
+#else
+                24579768, 3711570, 1342322, 22374306, 40103728, 14124955,
+                44564335, 14074918, 21964432, 8235257
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2089966982947227, 1854140343916181, 2151980759220007,
+                2139781292261749, 158070445864917
+#else
+                60580251, 31142934, 9442965, 27628844, 12025639, 32067012,
+                64127349, 31885225, 13006805, 2355433
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1338766321464554, 1906702607371284, 1519569445519894,
+                115384726262267, 1393058953390992
+#else
+                50803946, 19949172, 60476436, 28412082, 16974358, 22643349,
+                27202043, 1719366, 1141648, 20758196
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1364621558265400, 1512388234908357, 1926731583198686,
+                2041482526432505, 920401122333774
+#else
+                54244920, 20334445, 58790597, 22536340, 60298718, 28710537,
+                13475065, 30420460, 32674894, 13715045
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1884844597333588, 601480070269079, 620203503079537,
+                1079527400117915, 1202076693132015
+#else
+                11423316, 28086373, 32344215, 8962751, 24989809, 9241752,
+                53843611, 16086211, 38367983, 17912338
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                840922919763324, 727955812569642, 1303406629750194,
+                522898432152867, 294161410441865
+#else
+                65699196, 12530727, 60740138, 10847386, 19531186, 19422272,
+                55399715, 7791793, 39862921, 4383346
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                353760790835310, 1598361541848743, 1122905698202299,
+                1922533590158905, 419107700666580
+#else
+                38137966, 5271446, 65842855, 23817442, 54653627, 16732598,
+                62246457, 28647982, 27193556, 6245191
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                359856369838236, 180914355488683, 861726472646627,
+                218807937262986, 575626773232501
+#else
+                51914908, 5362277, 65324971, 2695833, 4960227, 12840725,
+                23061898, 3260492, 22510453, 8577507
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                755467689082474, 909202735047934, 730078068932500,
+                936309075711518, 2007798262842972
+#else
+                54476394, 11257345, 34415870, 13548176, 66387860, 10879010,
+                31168030, 13952092, 37537372, 29918525
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1609384177904073, 362745185608627, 1335318541768201,
+                800965770436248, 547877979267412
+#else
+                3877321, 23981693, 32416691, 5405324, 56104457, 19897796,
+                3759768, 11935320, 5611860, 8164018
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                984339177776787, 815727786505884, 1645154585713747,
+                1659074964378553, 1686601651984156
+#else
+                50833043, 14667796, 15906460, 12155291, 44997715, 24514713,
+                32003001, 24722143, 5773084, 25132323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1697863093781930, 599794399429786, 1104556219769607,
+                830560774794755, 12812858601017
+#else
+                43320746, 25300131, 1950874, 8937633, 18686727, 16459170,
+                66203139, 12376319, 31632953, 190926
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1168737550514982, 897832437380552, 463140296333799,
+                302564600022547, 2008360505135501
+#else
+                42515238, 17415546, 58684872, 13378745, 14162407, 6901328,
+                58820115, 4508563, 41767309, 29926903
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1856930662813910, 678090852002597, 1920179140755167,
+                1259527833759868, 55540971895511
+#else
+                8884438, 27670423, 6023973, 10104341, 60227295, 28612898,
+                18722940, 18768427, 65436375, 827624
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1158643631044921, 476554103621892, 178447851439725,
+                1305025542653569, 103433927680625
+#else
+                34388281, 17265135, 34605316, 7101209, 13354605, 2659080,
+                65308289, 19446395, 42230385, 1541285
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2176793111709008, 1576725716350391, 2009350167273523,
+                2012390194631546, 2125297410909580
+#else
+                2901328, 32436745, 3880375, 23495044, 49487923, 29941650,
+                45306746, 29986950, 20456844, 31669399
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                825403285195098, 2144208587560784, 1925552004644643,
+                1915177840006985, 1015952128947864
+#else
+                27019610, 12299467, 53450576, 31951197, 54247203, 28692960,
+                47568713, 28538373, 29439640, 15138866
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1807108316634472, 1534392066433717, 347342975407218,
+                1153820745616376, 7375003497471
+#else
+                21536104, 26928012, 34661045, 22864223, 44700786, 5175813,
+                61688824, 17193268, 7779327, 109896
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                983061001799725, 431211889901241, 2201903782961093,
+                817393911064341, 2214616493042167
+#else
+                30279725, 14648750, 59063993, 6425557, 13639621, 32810923,
+                28698389, 12180118, 23177719, 33000357
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                228567918409756, 865093958780220, 358083886450556,
+                159617889659320, 1360637926292598
+#else
+                26572828, 3405927, 35407164, 12890904, 47843196, 5335865,
+                60615096, 2378491, 4439158, 20275085
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                234147501399755, 2229469128637390, 2175289352258889,
+                1397401514549353, 1885288963089922
+#else
+                44392139, 3489069, 57883598, 33221678, 18875721, 32414337,
+                14819433, 20822905, 49391106, 28092994
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1111762412951562, 252849572507389, 1048714233823341,
+                146111095601446, 1237505378776770
+#else
+                62052362, 16566550, 15953661, 3767752, 56672365, 15627059,
+                66287910, 2177224, 8550082, 18440267
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1113790697840279, 1051167139966244, 1045930658550944,
+                2011366241542643, 1686166824620755
+#else
+                48635543, 16596774, 66727204, 15663610, 22860960, 15585581,
+                39264755, 29971692, 43848403, 25125843
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1054097349305049, 1872495070333352, 182121071220717,
+                1064378906787311, 100273572924182
+#else
+                34628313, 15707274, 58902952, 27902350, 29464557, 2713815,
+                44383727, 15860481, 45206294, 1494192
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1306410853171605, 1627717417672447, 50983221088417,
+                1109249951172250, 870201789081392
+#else
+                47546773, 19467038, 41524991, 24254879, 13127841, 759709,
+                21923482, 16529112, 8742704, 12967017
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                104233794644221, 1548919791188248, 2224541913267306,
+                2054909377116478, 1043803389015153
+#else
+                38643965, 1553204, 32536856, 23080703, 42417258, 33148257,
+                58194238, 30620535, 37205105, 15553882
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                216762189468802, 707284285441622, 190678557969733,
+                973969342604308, 1403009538434867
+#else
+                21877890, 3230008, 9881174, 10539357, 62311749, 2841331,
+                11543572, 14513274, 19375923, 20906471
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1279024291038477, 344776835218310, 273722096017199,
+                1834200436811442, 634517197663804
+#else
+                8832269, 19058947, 13253510, 5137575, 5037871, 4078777,
+                24880818, 27331716, 2862652, 9455043
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                343805853118335, 1302216857414201, 566872543223541,
+                2051138939539004, 321428858384280
+#else
+                29306751, 5123106, 20245049, 19404543, 9592565, 8447059,
+                65031740, 30564351, 15511448, 4789663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                470067171324852, 1618629234173951, 2000092177515639,
+                7307679772789, 1117521120249968
+#else
+                46429108, 7004546, 8824831, 24119455, 63063159, 29803695,
+                61354101, 108892, 23513200, 16652362
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                278151578291475, 1810282338562947, 1771599529530998,
+                1383659409671631, 685373414471841
+#else
+                33852691, 4144781, 62632835, 26975308, 10770038, 26398890,
+                60458447, 20618131, 48789665, 10212859
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                577009397403102, 1791440261786291, 2177643735971638,
+                174546149911960, 1412505077782326
+#else
+                2756062, 8598110, 7383731, 26694540, 22312758, 32449420,
+                21179800, 2600940, 57120566, 21047965
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                893719721537457, 1201282458018197, 1522349501711173,
+                58011597740583, 1130406465887139
+#else
+                42463153, 13317461, 36659605, 17900503, 21365573, 22684775,
+                11344423, 864440, 64609187, 16844368
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                412607348255453, 1280455764199780, 2233277987330768,
+                14180080401665, 331584698417165
+#else
+                40676061, 6148328, 49924452, 19080277, 18782928, 33278435,
+                44547329, 211299, 2719757, 4940997
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                262483770854550, 990511055108216, 526885552771698,
+                571664396646158, 354086190278723
+#else
+                65784982, 3911312, 60160120, 14759764, 37081714, 7851206,
+                21690126, 8518463, 26699843, 5276295
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1820352417585487, 24495617171480, 1547899057533253,
+                10041836186225, 480457105094042
+#else
+                53958991, 27125364, 9396248, 365013, 24703301, 23065493,
+                1321585, 149635, 51656090, 7159368
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2023310314989233, 637905337525881, 2106474638900687,
+                557820711084072, 1687858215057826
+#else
+                9987761, 30149673, 17507961, 9505530, 9731535, 31388918,
+                22356008, 8312176, 22477218, 25151047
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1144168702609745, 604444390410187, 1544541121756138,
+                1925315550126027, 626401428894002
+#else
+                18155857, 17049442, 19744715, 9006923, 15154154, 23015456,
+                24256459, 28689437, 44560690, 9334108
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1922168257351784, 2018674099908659, 1776454117494445,
+                956539191509034, 36031129147635
+#else
+                2986088, 28642539, 10776627, 30080588, 10620589, 26471229,
+                45695018, 14253544, 44521715, 536905
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                544644538748041, 1039872944430374, 876750409130610,
+                710657711326551, 1216952687484972
+#else
+                4377737, 8115836, 24567078, 15495314, 11625074, 13064599,
+                7390551, 10589625, 10838060, 18134008
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                58242421545916, 2035812695641843, 2118491866122923,
+                1191684463816273, 46921517454099
+#else
+                47766460, 867879, 9277171, 30335973, 52677291, 31567988,
+                19295825, 17757482, 6378259, 699185
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                272268252444639, 1374166457774292, 2230115177009552,
+                1053149803909880, 1354288411641016
+#else
+                7895007, 4057113, 60027092, 20476675, 49222032, 33231305,
+                66392824, 15693154, 62063800, 20180469
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1857910905368338, 1754729879288912, 885945464109877,
+                1516096106802166, 1602902393369811
+#else
+                59371282, 27685029, 52542544, 26147512, 11385653, 13201616,
+                31730678, 22591592, 63190227, 23885106
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1193437069800958, 901107149704790, 999672920611411,
+                477584824802207, 364239578697845
+#else
+                10188286, 17783598, 59772502, 13427542, 22223443, 14896287,
+                30743455, 7116568, 45322357, 5427592
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                886299989548838, 1538292895758047, 1590564179491896,
+                1944527126709657, 837344427345298
+#else
+                696102, 13206899, 27047647, 22922350, 15285304, 23701253,
+                10798489, 28975712, 19236242, 12477404
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                754558365378305, 1712186480903618, 1703656826337531,
+                750310918489786, 518996040250900
+#else
+                55879425, 11243795, 50054594, 25513566, 66320635, 25386464,
+                63211194, 11180503, 43939348, 7733643
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1309847803895382, 1462151862813074, 211370866671570,
+                1544595152703681, 1027691798954090
+#else
+                17800790, 19518253, 40108434, 21787760, 23887826, 3149671,
+                23466177, 23016261, 10322026, 15313801
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                803217563745370, 1884799722343599, 1357706345069218,
+                2244955901722095, 730869460037413
+#else
+                26246234, 11968874, 32263343, 28085704, 6830754, 20231401,
+                51314159, 33452449, 42659621, 10890803
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                689299471295966, 1831210565161071, 1375187341585438,
+                1106284977546171, 1893781834054269
+#else
+                35743198, 10271362, 54448239, 27287163, 16690206, 20491888,
+                52126651, 16484930, 25180797, 28219548
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                696351368613042, 1494385251239250, 738037133616932,
+                636385507851544, 927483222611406
+#else
+                66522290, 10376443, 34522450, 22268075, 19801892, 10997610,
+                2276632, 9482883, 316878, 13820577
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1949114198209333, 1104419699537997, 783495707664463,
+                1747473107602770, 2002634765788641
+#else
+                57226037, 29044064, 64993357, 16457135, 56008783, 11674995,
+                30756178, 26039378, 30696929, 29841583
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1607325776830197, 530883941415333, 1451089452727895,
+                1581691157083423, 496100432831154
+#else
+                32988917, 23951020, 12499365, 7910787, 56491607, 21622917,
+                59766047, 23569034, 34759346, 7392472
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1068900648804224, 2006891997072550, 1134049269345549,
+                1638760646180091, 2055396084625778
+#else
+                58253184, 15927860, 9866406, 29905021, 64711949, 16898650,
+                36699387, 24419436, 25112946, 30627788
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2222475519314561, 1870703901472013, 1884051508440561,
+                1344072275216753, 1318025677799069
+#else
+                64604801, 33117465, 25621773, 27875660, 15085041, 28074555,
+                42223985, 20028237, 5537437, 19640113
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                155711679280656, 681100400509288, 389811735211209,
+                2135723811340709, 408733211204125
+#else
+                55883280, 2320284, 57524584, 10149186, 33664201, 5808647,
+                52232613, 31824764, 31234589, 6090599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                7813206966729, 194444201427550, 2071405409526507,
+                1065605076176312, 1645486789731291
+#else
+                57475529, 116425, 26083934, 2897444, 60744427, 30866345, 609720,
+                15878753, 60138459, 24519663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                16625790644959, 1647648827778410, 1579910185572704,
+                436452271048548, 121070048451050
+#else
+                39351007, 247743, 51914090, 24551880, 23288160, 23542496,
+                43239268, 6503645, 20650474, 1804084
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1037263028552531, 568385780377829, 297953104144430,
+                1558584511931211, 2238221839292471
+#else
+                39519059, 15456423, 8972517, 8469608, 15640622, 4439847,
+                3121995, 23224719, 27842615, 33352104
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                190565267697443, 672855706028058, 338796554369226,
+                337687268493904, 853246848691734
+#else
+                51801891, 2839643, 22530074, 10026331, 4602058, 5048462,
+                28248656, 5031932, 55733782, 12714368
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1763863028400139, 766498079432444, 1321118624818005,
+                69494294452268, 858786744165651
+#else
+                20807691, 26283607, 29286140, 11421711, 39232341, 19686201,
+                45881388, 1035545, 47375635, 12796919
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1292056768563024, 1456632109855638, 1100631247050184,
+                1386133165675321, 1232898350193752
+#else
+                12076880, 19253146, 58323862, 21705509, 42096072, 16400683,
+                49517369, 20654993, 3480664, 18371617
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                366253102478259, 525676242508811, 1449610995265438,
+                1183300845322183, 185960306491545
+#else
+                34747315, 5457596, 28548107, 7833186, 7303070, 21600887,
+                42745799, 17632556, 33734809, 2771024
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                28315355815982, 460422265558930, 1799675876678724,
+                1969256312504498, 1051823843138725
+#else
+                45719598, 421931, 26597266, 6860826, 22486084, 26817260,
+                49971378, 29344205, 42556581, 15673396
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                156914999361983, 1606148405719949, 1665208410108430,
+                317643278692271, 1383783705665320
+#else
+                46924223, 2338215, 19788685, 23933476, 63107598, 24813538,
+                46837679, 4733253, 3727144, 20619984
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                54684536365732, 2210010038536222, 1194984798155308,
+                535239027773705, 1516355079301361
+#else
+                6120100, 814863, 55314462, 32931715, 6812204, 17806661, 2019593,
+                7975683, 31123697, 22595451
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1484387703771650, 198537510937949, 2186282186359116,
+                617687444857508, 647477376402122
+#else
+                30069250, 22119100, 30434653, 2958439, 18399564, 32578143,
+                12296868, 9204260, 50676426, 9648164
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2147715541830533, 500032538445817, 646380016884826,
+                352227855331122, 1488268620408052
+#else
+                32705413, 32003455, 30705657, 7451065, 55303258, 9631812,
+                3305266, 5248604, 41100532, 22176930
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                159386186465542, 1877626593362941, 618737197060512,
+                1026674284330807, 1158121760792685
+#else
+                17219846, 2375039, 35537917, 27978816, 47649184, 9219902,
+                294711, 15298639, 2662509, 17257359
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1744544377739822, 1964054180355661, 1685781755873170,
+                2169740670377448, 1286112621104591
+#else
+                65935918, 25995736, 62742093, 29266687, 45762450, 25120105,
+                32087528, 32331655, 32247247, 19164571
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                81977249784993, 1667943117713086, 1668983819634866,
+                1605016835177615, 1353960708075544
+#else
+                14312609, 1221556, 17395390, 24854289, 62163122, 24869796,
+                38911119, 23916614, 51081240, 20175586
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1602253788689063, 439542044889886, 2220348297664483,
+                657877410752869, 157451572512238
+#else
+                65680039, 23875441, 57873182, 6549686, 59725795, 33085767,
+                23046501, 9803137, 17597934, 2346211
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1029287186166717, 65860128430192, 525298368814832,
+                1491902500801986, 1461064796385400
+#else
+                18510781, 15337574, 26171504, 981392, 44867312, 7827555,
+                43617730, 22231079, 3059832, 21771562
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                408216988729246, 2121095722306989, 913562102267595,
+                1879708920318308, 241061448436731
+#else
+                10141598, 6082907, 17829293, 31606789, 9830091, 13613136,
+                41552228, 28009845, 33606651, 3592095
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1185483484383269, 1356339572588553, 584932367316448,
+                102132779946470, 1792922621116791
+#else
+                33114149, 17665080, 40583177, 20211034, 33076704, 8716171,
+                1151462, 1521897, 66126199, 26716628
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1966196870701923, 2230044620318636, 1425982460745905,
+                261167817826569, 46517743394330
+#else
+                34169699, 29298616, 23947180, 33230254, 34035889, 21248794,
+                50471177, 3891703, 26353178, 693168
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                107077591595359, 884959942172345, 27306869797400,
+                2224911448949390, 964352058245223
+#else
+                30374239, 1595580, 50224825, 13186930, 4600344, 406904, 9585294,
+                33153764, 31375463, 14369965
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1730194207717538, 431790042319772, 1831515233279467,
+                1372080552768581, 1074513929381760
+#else
+                52738210, 25781902, 1510300, 6434173, 48324075, 27291703,
+                32732229, 20445593, 17901440, 16011505
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1450880638731607, 1019861580989005, 1229729455116861,
+                1174945729836143, 826083146840706
+#else
+                18171223, 21619806, 54608461, 15197121, 56070717, 18324396,
+                47936623, 17508055, 8764034, 12309598
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1899935429242705, 1602068751520477, 940583196550370,
+                82431069053859, 1540863155745696
+#else
+                5975889, 28311244, 47649501, 23872684, 55567586, 14015781,
+                43443107, 1228318, 17544096, 22960650
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2136688454840028, 2099509000964294, 1690800495246475,
+                1217643678575476, 828720645084218
+#else
+                5811932, 31839139, 3442886, 31285122, 48741515, 25194890,
+                49064820, 18144304, 61543482, 12348899
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                765548025667841, 462473984016099, 998061409979798,
+                546353034089527, 2212508972466858
+#else
+                35709185, 11407554, 25755363, 6891399, 63851926, 14872273,
+                42259511, 8141294, 56476330, 32968952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                46575283771160, 892570971573071, 1281983193144090,
+                1491520128287375, 75847005908304
+#else
+                54433560, 694025, 62032719, 13300343, 14015258, 19103038,
+                57410191, 22225381, 30944592, 1130208
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1801436127943107, 1734436817907890, 1268728090345068,
+                167003097070711, 2233597765834956
+#else
+                8247747, 26843490, 40546482, 25845122, 52706924, 18905521,
+                4652151, 2488540, 23550156, 33283200
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1997562060465113, 1048700225534011, 7615603985628,
+                1855310849546841, 2242557647635213
+#else
+                17294297, 29765994, 7026747, 15626851, 22990044, 113481,
+                2267737, 27646286, 66700045, 33416712
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1161017320376250, 492624580169043, 2169815802355237,
+                976496781732542, 1770879511019629
+#else
+                16091066, 17300506, 18599251, 7340678, 2137637, 32332775,
+                63744702, 14550935, 3260525, 26388161
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1357044908364776, 729130645262438, 1762469072918979,
+                1365633616878458, 181282906404941
+#else
+                62198760, 20221544, 18550886, 10864893, 50649539, 26262835,
+                44079994, 20349526, 54360141, 2701325
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1080413443139865, 1155205815510486, 1848782073549786,
+                622566975152580, 124965574467971
+#else
+                58534169, 16099414, 4629974, 17213908, 46322650, 27548999,
+                57090500, 9276970, 11329923, 1862132
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1184526762066993, 247622751762817, 692129017206356,
+                820018689412496, 2188697339828085
+#else
+                14763057, 17650824, 36190593, 3689866, 3511892, 10313526,
+                45157776, 12219230, 58070901, 32614131
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2020536369003019, 202261491735136, 1053169669150884,
+                2056531979272544, 778165514694311
+#else
+                8894987, 30108338, 6150752, 3013931, 301220, 15693451, 35127648,
+                30644714, 51670695, 11595569
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                237404399610207, 1308324858405118, 1229680749538400,
+                720131409105291, 1958958863624906
+#else
+                15214943, 3537601, 40870142, 19495559, 4418656, 18323671,
+                13947275, 10730794, 53619402, 29190761
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                515583508038846, 17656978857189, 1717918437373989,
+                1568052070792483, 46975803123923
+#else
+                64570558, 7682792, 32759013, 263109, 37124133, 25598979,
+                44776739, 23365796, 977107, 699994
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                281527309158085, 36970532401524, 866906920877543,
+                2222282602952734, 1289598729589882
+#else
+                54642373, 4195083, 57897332, 550903, 51543527, 12917919,
+                19118110, 33114591, 36574330, 19216518
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1278207464902042, 494742455008756, 1262082121427081,
+                1577236621659884, 1888786707293291
+#else
+                31788442, 19046775, 4799988, 7372237, 8808585, 18806489,
+                9408236, 23502657, 12493931, 28145115
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                353042527954210, 1830056151907359, 1111731275799225,
+                174960955838824, 404312815582675
+#else
+                41428258, 5260743, 47873055, 27269961, 63412921, 16566086,
+                27218280, 2607121, 29375955, 6024730
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2064251142068628, 1666421603389706, 1419271365315441,
+                468767774902855, 191535130366583
+#else
+                842132, 30759739, 62345482, 24831616, 26332017, 21148791,
+                11831879, 6985184, 57168503, 2854095
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1716987058588002, 1859366439773457, 1767194234188234,
+                64476199777924, 1117233614485261
+#else
+                62261602, 25585100, 2516241, 27706719, 9695690, 26333246,
+                16512644, 960770, 12121869, 16648078
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                984292135520292, 135138246951259, 2220652137473167,
+                1722843421165029, 190482558012909
+#else
+                51890212, 14667095, 53772635, 2013716, 30598287, 33090295,
+                35603941, 25672367, 20237805, 2838411
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                298845952651262, 1166086588952562, 1179896526238434,
+                1347812759398693, 1412945390096208
+#else
+                47820798, 4453151, 15298546, 17376044, 22115042, 17581828,
+                12544293, 20083975, 1068880, 21054527
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143239552672925, 906436640714209, 2177000572812152,
+                2075299936108548, 325186347798433
+#else
+                57549981, 17035596, 33238497, 13506958, 30505848, 32439836,
+                58621956, 30924378, 12521377, 4845654
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                721024854374772, 684487861263316, 1373438744094159,
+                2193186935276995, 1387043709851261
+#else
+                38910324, 10744107, 64150484, 10199663, 7759311, 20465832,
+                3409347, 32681032, 60626557, 20668561
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                418098668140962, 715065997721283, 1471916138376055,
+                2168570337288357, 937812682637044
+#else
+                43547042, 6230155, 46726851, 10655313, 43068279, 21933259,
+                10477733, 32314216, 63995636, 13974497
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1043584187226485, 2143395746619356, 2209558562919611,
+                482427979307092, 847556718384018
+#else
+                12966261, 15550616, 35069916, 31939085, 21025979, 32924988,
+                5642324, 7188737, 18895762, 12629579
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1248731221520759, 1465200936117687, 540803492710140,
+                52978634680892, 261434490176109
+#else
+                14741879, 18607545, 22177207, 21833195, 1279740, 8058600,
+                11758140, 789443, 32195181, 3895677
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1057329623869501, 620334067429122, 461700859268034,
+                2012481616501857, 297268569108938
+#else
+                10758205, 15755439, 62598914, 9243697, 62229442, 6879878,
+                64904289, 29988312, 58126794, 4429646
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1055352180870759, 1553151421852298, 1510903185371259,
+                1470458349428097, 1226259419062731
+#else
+                64654951, 15725972, 46672522, 23143759, 61304955, 22514211,
+                59972993, 21911536, 18047435, 18272689
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1492988790301668, 790326625573331, 1190107028409745,
+                1389394752159193, 1620408196604194
+#else
+                41935844, 22247266, 29759955, 11776784, 44846481, 17733976,
+                10993113, 20703595, 49488162, 24145963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47000654413729, 1004754424173864, 1868044813557703,
+                173236934059409, 588771199737015
+#else
+                21987233, 700364, 42603816, 14972007, 59334599, 27836036,
+                32155025, 2581431, 37149879, 8773374
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                30498470091663, 1082245510489825, 576771653181956,
+                806509986132686, 1317634017056939
+#else
+                41540495, 454462, 53896929, 16126714, 25240068, 8594567,
+                20656846, 12017935, 59234475, 19634276
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                420308055751555, 1493354863316002, 165206721528088,
+                1884845694919786, 2065456951573059
+#else
+                6028163, 6263078, 36097058, 22252721, 66289944, 2461771,
+                35267690, 28086389, 65387075, 30777706
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115636332012334, 1854340990964155, 83792697369514,
+                1972177451994021, 457455116057587
+#else
+                54829870, 16624276, 987579, 27631834, 32908202, 1248608,
+                7719845, 29387734, 28408819, 6816612
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1698968457310898, 1435137169051090, 1083661677032510,
+                938363267483709, 340103887207182
+#else
+                56750770, 25316602, 19549650, 21385210, 22082622, 16147817,
+                20613181, 13982702, 56769294, 5067942
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1995325341336574, 911500251774648, 164010755403692,
+                855378419194762, 1573601397528842
+#else
+                36602878, 29732664, 12074680, 13582412, 47230892, 2443950,
+                47389578, 12746131, 5331210, 23448488
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                241719380661528, 310028521317150, 1215881323380194,
+                1408214976493624, 2141142156467363
+#else
+                30528792, 3601899, 65151774, 4619784, 39747042, 18118043,
+                24180792, 20984038, 27679907, 31905504
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1315157046163473, 727368447885818, 1363466668108618,
+                1668921439990361, 1398483384337907
+#else
+                9402385, 19597367, 32834042, 10838634, 40528714, 20317236,
+                26653273, 24868867, 22611443, 20839026
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                75029678299646, 1015388206460473, 1849729037055212,
+                1939814616452984, 444404230394954
+#else
+                22190590, 1118029, 22736441, 15130463, 36648172, 27563110,
+                19189624, 28905490, 4854858, 6622139
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2053597130993710, 2024431685856332, 2233550957004860,
+                2012407275509545, 872546993104440
+#else
+                58798126, 30600981, 58846284, 30166382, 56707132, 33282502,
+                13424425, 29987205, 26404408, 13001963
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1217269667678610, 599909351968693, 1390077048548598,
+                1471879360694802, 739586172317596
+#else
+                35867026, 18138731, 64114613, 8939345, 11562230, 20713762,
+                41044498, 21932711, 51703708, 11020692
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1718318639380794, 1560510726633958, 904462881159922,
+                1418028351780052, 94404349451937
+#else
+                1866042, 25604943, 59210214, 23253421, 12483314, 13477547,
+                3175636, 21130269, 28761761, 1406734
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2132502667405250, 214379346175414, 1502748313768060,
+                1960071701057800, 1353971822643138
+#else
+                66660290, 31776765, 13018550, 3194501, 57528444, 22392694,
+                24760584, 29207344, 25577410, 20175752
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                319394212043702, 2127459436033571, 717646691535162,
+                663366796076914, 318459064945314
+#else
+                42818486, 4759344, 66418211, 31701615, 2066746, 10693769,
+                37513074, 9884935, 57739938, 4745409
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                405989424923593, 1960452633787083, 667349034401665,
+                1492674260767112, 1451061489880787
+#else
+                57967561, 6049713, 47577803, 29213020, 35848065, 9944275,
+                51646856, 22242579, 10931923, 21622501
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                947085906234007, 323284730494107, 1485778563977200,
+                728576821512394, 901584347702286
+#else
+                50547351, 14112679, 59096219, 4817317, 59068400, 22139825,
+                44255434, 10856640, 46638094, 13434653
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1575783124125742, 2126210792434375, 1569430791264065,
+                1402582372904727, 1891780248341114
+#else
+                22759470, 23480998, 50342599, 31683009, 13637441, 23386341,
+                1765143, 20900106, 28445306, 28189722
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                838432205560695, 1997703511451664, 1018791879907867,
+                1662001808174331, 78328132957753
+#else
+                29875063, 12493613, 2795536, 29768102, 1710619, 15181182,
+                56913147, 24765756, 9074233, 1167180
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                739152638255629, 2074935399403557, 505483666745895,
+                1611883356514088, 628654635394878
+#else
+                40903181, 11014232, 57266213, 30918946, 40200743, 7532293,
+                48391976, 24018933, 3843902, 9367684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1822054032121349, 643057948186973, 7306757352712,
+                577249257962099, 284735863382083
+#else
+                56139269, 27150720, 9591133, 9582310, 11349256, 108879,
+                16235123, 8601684, 66969667, 4242894
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1366558556363930, 1448606567552086, 1478881020944768,
+                165803179355898, 1115718458123498
+#else
+                22092954, 20363309, 65066070, 21585919, 32186752, 22037044,
+                60534522, 2470659, 39691498, 16625500
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                204146226972102, 1630511199034723, 2215235214174763,
+                174665910283542, 956127674017216
+#else
+                56051142, 3042015, 13770083, 24296510, 584235, 33009577,
+                59338006, 2602724, 39757248, 14247412
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1562934578796716, 1070893489712745, 11324610642270,
+                958989751581897, 2172552325473805
+#else
+                6314156, 23289540, 34336361, 15957556, 56951134, 168749,
+                58490057, 14290060, 27108877, 32373552
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1770564423056027, 735523631664565, 1326060113795289,
+                1509650369341127, 65892421582684
+#else
+                58522267, 26383465, 13241781, 10960156, 34117849, 19759835,
+                33547975, 22495543, 39960412, 981873
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                623682558650637, 1337866509471512, 990313350206649,
+                1314236615762469, 1164772974270275
+#else
+                22833421, 9293594, 34459416, 19935764, 57971897, 14756818,
+                44180005, 19583651, 56629059, 17356469
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                223256821462517, 723690150104139, 1000261663630601,
+                933280913953265, 254872671543046
+#else
+                59340277, 3326785, 38997067, 10783823, 19178761, 14905060,
+                22680049, 13906969, 51175174, 3797898
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1969087237026041, 624795725447124, 1335555107635969,
+                2069986355593023, 1712100149341902
+#else
+                21721337, 29341686, 54902740, 9310181, 63226625, 19901321,
+                23740223, 30845200, 20491982, 25512280
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1236103475266979, 1837885883267218, 1026072585230455,
+                1025865513954973, 1801964901432134
+#else
+                9209251, 18419377, 53852306, 27386633, 66377847, 15289672,
+                25947805, 15286587, 30997318, 26851369
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1115241013365517, 1712251818829143, 2148864332502771,
+                2096001471438138, 2235017246626125
+#else
+                7392013, 16618386, 23946583, 25514540, 53843699, 32020573,
+                52911418, 31232855, 17649997, 33304352
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1299268198601632, 2047148477845621, 2165648650132450,
+                1612539282026145, 514197911628890
+#else
+                57807776, 19360604, 30609525, 30504889, 41933794, 32270679,
+                51867297, 24028707, 64875610, 7662145
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                118352772338543, 1067608711804704, 1434796676193498,
+                1683240170548391, 230866769907437
+#else
+                49550191, 1763593, 33994528, 15908609, 37067994, 21380136,
+                7335079, 25082233, 63934189, 3440182
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1850689576796636, 1601590730430274, 1139674615958142,
+                1954384401440257, 76039205311
+#else
+                47219164, 27577423, 42997570, 23865561, 10799742, 16982475,
+                40449, 29122597, 4862399, 1133
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1723387471374172, 997301467038410, 533927635123657,
+                20928644693965, 1756575222802513
+#else
+                34252636, 25680474, 61686474, 14860949, 50789833, 7956141,
+                7258061, 311861, 36513873, 26175010
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2146711623855116, 503278928021499, 625853062251406,
+                1109121378393107, 1033853809911861
+#else
+                63335436, 31988495, 28985339, 7499440, 24445838, 9325937,
+                29727763, 16527196, 18278453, 15405622
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                571005965509422, 2005213373292546, 1016697270349626,
+                56607856974274, 914438579435146
+#else
+                62726958, 8508651, 47210498, 29880007, 61124410, 15149969,
+                53795266, 843522, 45233802, 13626196
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346698876211176, 2076651707527589, 1084761571110205,
+                265334478828406, 1068954492309671
+#else
+                2281448, 20067377, 56193445, 30944521, 1879357, 16164207,
+                56324982, 3953791, 13340839, 15928663
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1769967932677654, 1695893319756416, 1151863389675920,
+                1781042784397689, 400287774418285
+#else
+                31727126, 26374577, 48671360, 25270779, 2875792, 17164102,
+                41838969, 26539605, 43656557, 5964752
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1851867764003121, 403841933237558, 820549523771987,
+                761292590207581, 1743735048551143
+#else
+                4100401, 27594980, 49929526, 6017713, 48403027, 12227140,
+                40424029, 11344143, 2538215, 25983677
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                410915148140008, 2107072311871739, 1004367461876503,
+                99684895396761, 1180818713503224
+#else
+                57675240, 6123112, 11159803, 31397824, 30016279, 14966241,
+                46633881, 1485420, 66479608, 17595569
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                285945406881439, 648174397347453, 1098403762631981,
+                1366547441102991, 1505876883139217
+#else
+                40304287, 4260918, 11851389, 9658551, 35091757, 16367491,
+                46903439, 20363143, 11659921, 22439314
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                672095903120153, 1675918957959872, 636236529315028,
+                1569297300327696, 2164144194785875
+#else
+                26180377, 10015009, 36264640, 24973138, 5418196, 9480663,
+                2231568, 23384352, 33100371, 32248261
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1902708175321798, 1035343530915438, 1178560808893263,
+                301095684058146, 1280977479761118
+#else
+                15121094, 28352561, 56718958, 15427820, 39598927, 17561924,
+                21670946, 4486675, 61177054, 19088051
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1615357281742403, 404257611616381, 2160201349780978,
+                1160947379188955, 1578038619549541
+#else
+                16166467, 24070699, 56004733, 6023907, 35182066, 32189508,
+                2340059, 17299464, 56373093, 23514607
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013087639791217, 822734930507457, 1785668418619014,
+                1668650702946164, 389450875221715
+#else
+                28042865, 29997343, 54982337, 12259705, 63391366, 26608532,
+                6766452, 24864833, 18036435, 5803270
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                453918449698368, 106406819929001, 2072540975937135,
+                308588860670238, 1304394580755385
+#else
+                66291264, 6763911, 11803561, 1585585, 10958447, 30883267,
+                23855390, 4598332, 60949433, 19436993
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295082798350326, 2091844511495996, 1851348972587817,
+                3375039684596, 789440738712837
+#else
+                36077558, 19298237, 17332028, 31170912, 31312681, 27587249,
+                696308, 50292, 47013125, 11763583
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2083069137186154, 848523102004566, 993982213589257,
+                1405313299916317, 1532824818698468
+#else
+                66514282, 31040148, 34874710, 12643979, 12650761, 14811489,
+                665117, 20940800, 47335652, 22840869
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1495961298852430, 1397203457344779, 1774950217066942,
+                139302743555696, 66603584342787
+#else
+                30464590, 22291560, 62981387, 20819953, 19835326, 26448819,
+                42712688, 2075772, 50088707, 992470
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1782411379088302, 1096724939964781, 27593390721418,
+                542241850291353, 1540337798439873
+#else
+                18357166, 26559999, 7766381, 16342475, 37783946, 411173,
+                14578841, 8080033, 55534529, 22952821
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                693543956581437, 171507720360750, 1557908942697227,
+                1074697073443438, 1104093109037196
+#else
+                19598397, 10334610, 12555054, 2555664, 18821899, 23214652,
+                21873262, 16014234, 26224780, 16452269
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                345288228393419, 1099643569747172, 134881908403743,
+                1740551994106740, 248212179299770
+#else
+                36884939, 5145195, 5944548, 16385966, 3976735, 2009897,
+                55731060, 25936245, 46575034, 3698649
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                231429562203065, 1526290236421172, 2021375064026423,
+                1520954495658041, 806337791525116
+#else
+                14187449, 3448569, 56472628, 22743496, 44444983, 30120835,
+                7268409, 22663988, 27394300, 12015369
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1079623667189886, 872403650198613, 766894200588288,
+                2163700860774109, 2023464507911816
+#else
+                19695742, 16087646, 28032085, 12999827, 6817792, 11427614,
+                20244189, 32241655, 53849736, 30151970
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                854645372543796, 1936406001954827, 151460662541253,
+                825325739271555, 1554306377287556
+#else
+                30860084, 12735208, 65220619, 28854697, 50133957, 2256939,
+                58942851, 12298311, 58558340, 23160969
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1497138821904622, 1044820250515590, 1742593886423484,
+                1237204112746837, 849047450816987
+#else
+                61389038, 22309106, 65198214, 15569034, 26642876, 25966672,
+                61319509, 18435777, 62132699, 12651792
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                667962773375330, 1897271816877105, 1399712621683474,
+                1143302161683099, 2081798441209593
+#else
+                64260450, 9953420, 11531313, 28271553, 26895122, 20857343,
+                53990043, 17036529, 9768697, 31021214
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                127147851567005, 1936114012888110, 1704424366552046,
+                856674880716312, 716603621335359
+#else
+                42389405, 1894650, 66821166, 28850346, 15348718, 25397902,
+                32767512, 12765450, 4940095, 10678226
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1072409664800960, 2146937497077528, 1508780108920651,
+                935767602384853, 1112800433544068
+#else
+                18860224, 15980149, 48121624, 31991861, 40875851, 22482575,
+                59264981, 13944023, 42736516, 16582018
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                333549023751292, 280219272863308, 2104176666454852,
+                1036466864875785, 536135186520207
+#else
+                51604604, 4970267, 37215820, 4175592, 46115652, 31354675,
+                55404809, 15444559, 56105103, 7989036
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                373666279883137, 146457241530109, 304116267127857,
+                416088749147715, 1258577131183391
+#else
+                31490433, 5568061, 64696061, 2182382, 34772017, 4531685,
+                35030595, 6200205, 47422751, 18754260
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1186115062588401, 2251609796968486, 1098944457878953,
+                1153112761201374, 1791625503417267
+#else
+                49800177, 17674491, 35586086, 33551600, 34221481, 16375548,
+                8680158, 17182719, 28550067, 26697300
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1870078460219737, 2129630962183380, 852283639691142,
+                292865602592851, 401904317342226
+#else
+                38981977, 27866340, 16837844, 31733974, 60258182, 12700015,
+                37068883, 4364037, 1155602, 5988841
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1361070124828035, 815664541425524, 1026798897364671,
+                1951790935390647, 555874891834790
+#else
+                21890435, 20281525, 54484852, 12154348, 59276991, 15300495,
+                23148983, 29083951, 24618406, 8283181
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1546301003424277, 459094500062839, 1097668518375311,
+                1780297770129643, 720763293687608
+#else
+                33972757, 23041680, 9975415, 6841041, 35549071, 16356535,
+                3070187, 26528504, 1466168, 10740210
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1212405311403990, 1536693382542438, 61028431067459,
+                1863929423417129, 1223219538638038
+#else
+                65599446, 18066246, 53605478, 22898515, 32799043, 909394,
+                53169961, 27774712, 34944214, 18227391
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1294303766540260, 1183557465955093, 882271357233093,
+                63854569425375, 2213283684565087
+#else
+                3960804, 19286629, 39082773, 17636380, 47704005, 13146867,
+                15567327, 951507, 63848543, 32980496
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                339050984211414, 601386726509773, 413735232134068,
+                966191255137228, 1839475899458159
+#else
+                24740822, 5052253, 37014733, 8961360, 25877428, 6165135,
+                42740684, 14397371, 59728495, 27410326
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                235605972169408, 2174055643032978, 1538335001838863,
+                1281866796917192, 1815940222628465
+#else
+                38220480, 3510802, 39005586, 32395953, 55870735, 22922977,
+                51667400, 19101303, 65483377, 27059617
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1632352921721536, 1833328609514701, 2092779091951987,
+                1923956201873226, 2210068022482919
+#else
+                793280, 24323954, 8836301, 27318725, 39747955, 31184838,
+                33152842, 28669181, 57202663, 32932579
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                35271216625062, 1712350667021807, 983664255668860,
+                98571260373038, 1232645608559836
+#else
+                5666214, 525582, 20782575, 25516013, 42570364, 14657739,
+                16099374, 1468826, 60937436, 18367850
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1998172393429622, 1798947921427073, 784387737563581,
+                1589352214827263, 1589861734168180
+#else
+                62249590, 29775088, 64191105, 26806412, 7778749, 11688288,
+                36704511, 23683193, 65549940, 23690785
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1733739258725305, 31715717059538, 201969945218860,
+                992093044556990, 1194308773174556
+#else
+                10896313, 25834728, 824274, 472601, 47648556, 3009586, 25248958,
+                14783338, 36527388, 17796587
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                846415389605137, 746163495539180, 829658752826080,
+                592067705956946, 957242537821393
+#else
+                10566929, 12612572, 35164652, 11118702, 54475488, 12362878,
+                21752402, 8822496, 24003793, 14264025
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1758148849754419, 619249044817679, 168089007997045,
+                1371497636330523, 1867101418880350
+#else
+                27713843, 26198459, 56100623, 9227529, 27050101, 2504721,
+                23886875, 20436907, 13958494, 27821979
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                326633984209635, 261759506071016, 1700682323676193,
+                1577907266349064, 1217647663383016
+#else
+                43627235, 4867225, 39861736, 3900520, 29838369, 25342141,
+                35219464, 23512650, 7340520, 18144364
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1714182387328607, 1477856482074168, 574895689942184,
+                2159118410227270, 1555532449716575
+#else
+                4646495, 25543308, 44342840, 22021777, 23184552, 8566613,
+                31366726, 32173371, 52042079, 23179239
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                853828206885131, 998498946036955, 1835887550391235,
+                207627336608048, 258363815956050
+#else
+                49838347, 12723031, 50115803, 14878793, 21619651, 27356856,
+                27584816, 3093888, 58265170, 3849920
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                141141474651677, 1236728744905256, 643101419899887,
+                1646615130509173, 1208239602291765
+#else
+                58043933, 2103171, 25561640, 18428694, 61869039, 9582957,
+                32477045, 24536477, 5002293, 18004173
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1501663228068911, 1354879465566912, 1444432675498247,
+                897812463852601, 855062598754348
+#else
+                55051311, 22376525, 21115584, 20189277, 8808711, 21523724,
+                16489529, 13378448, 41263148, 12741425
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                714380763546606, 1032824444965790, 1774073483745338,
+                1063840874947367, 1738680636537158
+#else
+                61162478, 10645102, 36197278, 15390283, 63821882, 26435754,
+                24306471, 15852464, 28834118, 25908360
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1640635546696252, 633168953192112, 2212651044092396,
+                30590958583852, 368515260889378
+#else
+                49773116, 24447374, 42577584, 9434952, 58636780, 32971069,
+                54018092, 455840, 20461858, 5491305
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1171650314802029, 1567085444565577, 1453660792008405,
+                757914533009261, 1619511342778196
+#else
+                13669229, 17458950, 54626889, 23351392, 52539093, 21661233,
+                42112877, 11293806, 38520660, 24132599
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                420958967093237, 971103481109486, 2169549185607107,
+                1301191633558497, 1661514101014240
+#else
+                28497909, 6272777, 34085870, 14470569, 8906179, 32328802,
+                18504673, 19389266, 29867744, 24758489
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                907123651818302, 1332556122804146, 1824055253424487,
+                1367614217442959, 1982558335973172
+#else
+                50901822, 13517195, 39309234, 19856633, 24009063, 27180541,
+                60741263, 20379039, 22853428, 29542421
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1121533090144639, 1021251337022187, 110469995947421,
+                1511059774758394, 2110035908131662
+#else
+                24191359, 16712145, 53177067, 15217830, 14542237, 1646131,
+                18603514, 22516545, 12876622, 31441985
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                303213233384524, 2061932261128138, 352862124777736,
+                40828818670255, 249879468482660
+#else
+                17902668, 4518229, 66697162, 30725184, 26878216, 5258055,
+                54248111, 608396, 16031844, 3723494
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                856559257852200, 508517664949010, 1378193767894916,
+                1723459126947129, 1962275756614521
+#else
+                38476072, 12763727, 46662418, 7577503, 33001348, 20536687,
+                17558841, 25681542, 23896953, 29240187
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1445691340537320, 40614383122127, 402104303144865,
+                485134269878232, 1659439323587426
+#else
+                47103464, 21542479, 31520463, 605201, 2543521, 5991821,
+                64163800, 7229063, 57189218, 24727572
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                20057458979482, 1183363722525800, 2140003847237215,
+                2053873950687614, 2112017736174909
+#else
+                28816026, 298879, 38943848, 17633493, 19000927, 31888542,
+                54428030, 30605106, 49057085, 31471516
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2228654250927986, 1483591363415267, 1368661293910956,
+                1076511285177291, 526650682059608
+#else
+                16000882, 33209536, 3493091, 22107234, 37604268, 20394642,
+                12577739, 16041268, 47393624, 7847706
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                709481497028540, 531682216165724, 316963769431931,
+                1814315888453765, 258560242424104
+#else
+                10151868, 10572098, 27312476, 7922682, 14825339, 4723128,
+                34252933, 27035413, 57088296, 3852847
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1053447823660455, 1955135194248683, 1010900954918985,
+                1182614026976701, 1240051576966610
+#else
+                55678375, 15697595, 45987307, 29133784, 5386313, 15063598,
+                16514493, 17622322, 29330898, 18478208
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1957943897155497, 1788667368028035, 137692910029106,
+                1039519607062, 826404763313028
+#else
+                41609129, 29175637, 51885955, 26653220, 16615730, 2051784,
+                3303702, 15490, 39560068, 12314390
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1848942433095597, 1582009882530495, 1849292741020143,
+                1068498323302788, 2001402229799484
+#else
+                15683501, 27551389, 18109119, 23573784, 15337967, 27556609,
+                50391428, 15921865, 16103996, 29823217
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1528282417624269, 2142492439828191, 2179662545816034,
+                362568973150328, 1591374675250271
+#else
+                43939021, 22773182, 13588191, 31925625, 63310306, 32479502,
+                47835256, 5402698, 37293151, 23713330
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                160026679434388, 232341189218716, 2149181472355545,
+                598041771119831, 183859001910173
+#else
+                23190676, 2384583, 34394524, 3462153, 37205209, 32025299,
+                55842007, 8911516, 41903005, 2739712
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013278155187349, 662660471354454, 793981225706267,
+                411706605985744, 804490933124791
+#else
+                21374101, 30000182, 33584214, 9874410, 15377179, 11831242,
+                33578960, 6134906, 4931255, 11987849
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2051892037280204, 488391251096321, 2230187337030708,
+                930221970662692, 679002758255210
+#else
+                67101132, 30575573, 50885377, 7277596, 105524, 33232381,
+                35628324, 13861387, 37032554, 10117929
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1530723630438670, 875873929577927, 341560134269988,
+                449903119530753, 1055551308214179
+#else
+                37607694, 22809559, 40945095, 13051538, 41483300, 5089642,
+                60783361, 6704078, 12890019, 15728940
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1461835919309432, 1955256480136428, 180866187813063,
+                1551979252664528, 557743861963950
+#else
+                45136504, 21783052, 66157804, 29135591, 14704839, 2695116,
+                903376, 23126293, 12885166, 8311031
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                359179641731115, 1324915145732949, 902828372691474,
+                294254275669987, 1887036027752957
+#else
+                49592363, 5352193, 10384213, 19742774, 7506450, 13453191,
+                26423267, 4384730, 1888765, 28119028
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2043271609454323, 2038225437857464, 1317528426475850,
+                1398989128982787, 2027639881006861
+#else
+                41291507, 30447119, 53614264, 30371925, 30896458, 19632703,
+                34857219, 20846562, 47644429, 30214188
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2072902725256516, 312132452743412, 309930885642209,
+                996244312618453, 1590501300352303
+#else
+                43500868, 30888657, 66582772, 4651135, 5765089, 4618330,
+                6092245, 14845197, 17151279, 23700316
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1397254305160710, 695734355138021, 2233992044438756,
+                1776180593969996, 1085588199351115
+#else
+                42278406, 20820711, 51942885, 10367249, 37577956, 33289075,
+                22825804, 26467153, 50242379, 16176524
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                440567051331029, 254894786356681, 493869224930222,
+                1556322069683366, 1567456540319218
+#else
+                43525589, 6564960, 20063689, 3798228, 62368686, 7359224,
+                2006182, 23191006, 38362610, 23356922
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1950722461391320, 1907845598854797, 1822757481635527,
+                2121567704750244, 73811931471221
+#else
+                56482264, 29068029, 53788301, 28429114, 3432135, 27161203,
+                23632036, 31613822, 32808309, 1099883
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                387139307395758, 2058036430315676, 1220915649965325,
+                1794832055328951, 1230009312169328
+#else
+                15030958, 5768825, 39657628, 30667132, 60681485, 18193060,
+                51830967, 26745081, 2051440, 18328567
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1765973779329517, 659344059446977, 19821901606666,
+                1301928341311214, 1116266004075885
+#else
+                63746541, 26315059, 7517889, 9824992, 23555850, 295369, 5148398,
+                19400244, 44422509, 16633659
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1127572801181483, 1224743760571696, 1276219889847274,
+                1529738721702581, 1589819666871853
+#else
+                4577067, 16802144, 13249840, 18250104, 19958762, 19017158,
+                18559669, 22794883, 8402477, 23690159
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2181229378964934, 2190885205260020, 1511536077659137,
+                1246504208580490, 668883326494241
+#else
+                38702534, 32502850, 40318708, 32646733, 49896449, 22523642,
+                9453450, 18574360, 17983009, 9967138
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                437866655573314, 669026411194768, 81896997980338,
+                523874406393178, 245052060935236
+#else
+                41346370, 6524721, 26585488, 9969270, 24709298, 1220360,
+                65430874, 7806336, 17507396, 3651560
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1975438052228868, 1071801519999806, 594652299224319,
+                1877697652668809, 1489635366987285
+#else
+                56688388, 29436320, 14584638, 15971087, 51340543, 8861009,
+                26556809, 27979875, 48555541, 22197296
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                958592545673770, 233048016518599, 851568750216589,
+                567703851596087, 1740300006094761
+#else
+                2839082, 14284142, 4029895, 3472686, 14402957, 12689363,
+                40466743, 8459446, 61503401, 25932490
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2014540178270324, 192672779514432, 213877182641530,
+                2194819933853411, 1716422829364835
+#else
+                62269556, 30018987, 9744960, 2871048, 25113978, 3187018,
+                41998051, 32705365, 17258083, 25576693
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1540769606609725, 2148289943846077, 1597804156127445,
+                1230603716683868, 815423458809453
+#else
+                18164541, 22959256, 49953981, 32012014, 19237077, 23809137,
+                23357532, 18337424, 26908269, 12150756
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1738560251245018, 1779576754536888, 1783765347671392,
+                1880170990446751, 1088225159617541
+#else
+                36843994, 25906566, 5112248, 26517760, 65609056, 26580174,
+                43167, 28016731, 34806789, 16215818
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                659303913929492, 1956447718227573, 1830568515922666,
+                841069049744408, 1669607124206368
+#else
+                60209940, 9824393, 54804085, 29153342, 35711722, 27277596,
+                32574488, 12532905, 59605792, 24879084
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143465490433355, 1532194726196059, 1093276745494697,
+                481041706116088, 2121405433561163
+#else
+                39765323, 17038963, 39957339, 22831480, 946345, 16291093,
+                254968, 7168080, 21676107, 31611404
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1686424298744462, 1451806974487153, 266296068846582,
+                1834686947542675, 1720762336132256
+#else
+                21260942, 25129680, 50276977, 21633609, 43430902, 3968120,
+                63456915, 27338965, 63552672, 25641356
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                889217026388959, 1043290623284660, 856125087551909,
+                1669272323124636, 1603340330827879
+#else
+                16544735, 13250366, 50304436, 15546241, 62525861, 12757257,
+                64646556, 24874095, 48201831, 23891632
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1206396181488998, 333158148435054, 1402633492821422,
+                1120091191722026, 1945474114550509
+#else
+                64693606, 17976703, 18312302, 4964443, 51836334, 20900867,
+                26820650, 16690659, 25459437, 28989823
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                766720088232571, 1512222781191002, 1189719893490790,
+                2091302129467914, 2141418006894941
+#else
+                41964155, 11425019, 28423002, 22533875, 60963942, 17728207,
+                9142794, 31162830, 60676445, 31909614
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                419663647306612, 1998875112167987, 1426599870253707,
+                1154928355379510, 486538532138187
+#else
+                44004212, 6253475, 16964147, 29785560, 41994891, 21257994,
+                39651638, 17209773, 6335691, 7249989
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                938160078005954, 1421776319053174, 1941643234741774,
+                180002183320818, 1414380336750546
+#else
+                36775618, 13979674, 7503222, 21186118, 55152142, 28932738,
+                36836594, 2682241, 25993170, 21075909
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                398001940109652, 1577721237663248, 1012748649830402,
+                1540516006905144, 1011684812884559
+#else
+                4364628, 5930691, 32304656, 23509878, 59054082, 15091130,
+                22857016, 22955477, 31820367, 15075278
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1653276489969630, 6081825167624, 1921777941170836,
+                1604139841794531, 861211053640641
+#else
+                31879134, 24635739, 17258760, 90626, 59067028, 28636722,
+                24162787, 23903546, 49138625, 12833044
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                996661541407379, 1455877387952927, 744312806857277,
+                139213896196746, 1000282908547789
+#else
+                19073683, 14851414, 42705695, 21694263, 7625277, 11091125,
+                47489674, 2074448, 57694925, 14905376
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1450817495603008, 1476865707053229, 1030490562252053,
+                620966950353376, 1744760161539058
+#else
+                24483648, 21618865, 64589997, 22007013, 65555733, 15355505,
+                41826784, 9253128, 27628530, 25998952
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                559728410002599, 37056661641185, 2038622963352006,
+                1637244893271723, 1026565352238948
+#else
+                17597607, 8340603, 19355617, 552187, 26198470, 30377849,
+                4593323, 24396850, 52997988, 15297015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                962165956135846, 1116599660248791, 182090178006815,
+                1455605467021751, 196053588803284
+#else
+                510886, 14337390, 35323607, 16638631, 6328095, 2713355,
+                46891447, 21690211, 8683220, 2921426
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                796863823080135, 1897365583584155, 420466939481601,
+                2165972651724672, 932177357788289
+#else
+                18606791, 11874196, 27155355, 28272950, 43077121, 6265445,
+                41930624, 32275507, 4674689, 13890525
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                877047233620632, 1375632631944375, 643773611882121,
+                660022738847877, 19353932331831
+#else
+                13609624, 13069022, 39736503, 20498523, 24360585, 9592974,
+                14977157, 9835105, 4389687, 288396
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2216943882299338, 394841323190322, 2222656898319671,
+                558186553950529, 1077236877025190
+#else
+                9922506, 33035038, 13613106, 5883594, 48350519, 33120168,
+                54804801, 8317627, 23388070, 16052080
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                801118384953213, 1914330175515892, 574541023311511,
+                1471123787903705, 1526158900256288
+#else
+                12719997, 11937594, 35138804, 28525742, 26900119, 8561328,
+                46953177, 21921452, 52354592, 22741539
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                949617889087234, 2207116611267331, 912920039141287,
+                501158539198789, 62362560771472
+#else
+                15961858, 14150409, 26716931, 32888600, 44314535, 13603568,
+                11829573, 7467844, 38286736, 929274
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1474518386765335, 1760793622169197, 1157399790472736,
+                1622864308058898, 165428294422792
+#else
+                11038231, 21972036, 39798381, 26237869, 56610336, 17246600,
+                43629330, 24182562, 45715720, 2465073
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1961673048027128, 102619413083113, 1051982726768458,
+                1603657989805485, 1941613251499678
+#else
+                20017144, 29231206, 27915241, 1529148, 12396362, 15675764,
+                13817261, 23896366, 2463390, 28932292
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1401939116319266, 335306339903072, 72046196085786,
+                862423201496006, 850518754531384
+#else
+                50749986, 20890520, 55043680, 4996453, 65852442, 1073571,
+                9583558, 12851107, 4003896, 12673717
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1234706593321979, 1083343891215917, 898273974314935,
+                1640859118399498, 157578398571149
+#else
+                65377275, 18398561, 63845933, 16143081, 19294135, 13385325,
+                14741514, 24450706, 7903885, 2348101
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1143483057726416, 1992614991758919, 674268662140796,
+                1773370048077526, 674318359920189
+#else
+                24536016, 17039225, 12715591, 29692277, 1511292, 10047386,
+                63266518, 26425272, 38731325, 10048126
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1835401379538542, 173900035308392, 818247630716732,
+                1762100412152786, 1021506399448291
+#else
+                54486638, 27349611, 30718824, 2591312, 56491836, 12192839,
+                18873298, 26257342, 34811107, 15221631
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1506632088156630, 2127481795522179, 513812919490255,
+                140643715928370, 442476620300318
+#else
+                40630742, 22450567, 11546243, 31701949, 9180879, 7656409,
+                45764914, 2095754, 29769758, 6593415
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2056683376856736, 219094741662735, 2193541883188309,
+                1841182310235800, 556477468664293
+#else
+                35114656, 30646970, 4176911, 3264766, 12538965, 32686321,
+                26312344, 27435754, 30958053, 8292160
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1315019427910827, 1049075855992603, 2066573052986543,
+                266904467185534, 2040482348591520
+#else
+                31429803, 19595316, 29173531, 15632448, 12174511, 30794338,
+                32808830, 3977186, 26143136, 30405556
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                94096246544434, 922482381166992, 24517828745563,
+                2139430508542503, 2097139044231004
+#else
+                22648882, 1402143, 44308880, 13746058, 7936347, 365344,
+                58440231, 31879998, 63350620, 31249806
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                537697207950515, 1399352016347350, 1563663552106345,
+                2148749520888918, 549922092988516
+#else
+                51616947, 8012312, 64594134, 20851969, 43143017, 23300402,
+                65496150, 32018862, 50444388, 8194477
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1747985413252434, 680511052635695, 1809559829982725,
+                594274250930054, 201673170745982
+#else
+                27338066, 26047012, 59694639, 10140404, 48082437, 26964542,
+                27277190, 8855376, 28572286, 3005164
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                323583936109569, 1973572998577657, 1192219029966558,
+                79354804385273, 1374043025560347
+#else
+                26287105, 4821776, 25476601, 29408529, 63344350, 17765447,
+                49100281, 1182478, 41014043, 20474836
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                213277331329947, 416202017849623, 1950535221091783,
+                1313441578103244, 2171386783823658
+#else
+                59937691, 3178079, 23970071, 6201893, 49913287, 29065239,
+                45232588, 19571804, 32208682, 32356184
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                189088804229831, 993969372859110, 895870121536987,
+                1547301535298256, 1477373024911350
+#else
+                50451143, 2817642, 56822502, 14811297, 6024667, 13349505,
+                39793360, 23056589, 39436278, 22014573
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1620578418245010, 541035331188469, 2235785724453865,
+                2154865809088198, 1974627268751826
+#else
+                15941010, 24148500, 45741813, 8062054, 31876073, 33315803,
+                51830470, 32110002, 15397330, 29424239
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346805451740245, 1350981335690626, 942744349501813,
+                2155094562545502, 1012483751693409
+#else
+                8934485, 20068965, 43822466, 20131190, 34662773, 14047985,
+                31170398, 32113411, 39603297, 15087183
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2107080134091762, 1132567062788208, 1824935377687210,
+                769194804343737, 1857941799971888
+#else
+                48751602, 31397940, 24524912, 16876564, 15520426, 27193656,
+                51606457, 11461895, 16788528, 27685490
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1074666112436467, 249279386739593, 1174337926625354,
+                1559013532006480, 1472287775519121
+#else
+                65161459, 16013772, 21750665, 3714552, 49707082, 17498998,
+                63338576, 23231111, 31322513, 21938797
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1872620123779532, 1892932666768992, 1921559078394978,
+                1270573311796160, 1438913646755037
+#else
+                21426636, 27904214, 53460576, 28206894, 38296674, 28633461,
+                48833472, 18933017, 13040861, 21441484
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                837390187648199, 1012253300223599, 989780015893987,
+                1351393287739814, 328627746545550
+#else
+                11293895, 12478086, 39972463, 15083749, 37801443, 14748871,
+                14555558, 20137329, 1613710, 4896935
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1028328827183114, 1711043289969857, 1350832470374933,
+                1923164689604327, 1495656368846911
+#else
+                41213962, 15323293, 58619073, 25496531, 25967125, 20128972,
+                2825959, 28657387, 43137087, 22287016
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1900828492104143, 430212361082163, 687437570852799,
+                832514536673512, 1685641495940794
+#else
+                51184079, 28324551, 49665331, 6410663, 3622847, 10243618,
+                20615400, 12405433, 43355834, 25118015
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                842632847936398, 605670026766216, 290836444839585,
+                163210774892356, 2213815011799645
+#else
+                60017550, 12556207, 46917512, 9025186, 50036385, 4333800,
+                4378436, 2432030, 23097949, 32988414
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1176336383453996, 1725477294339771, 12700622672454,
+                678015708818208, 162724078519879
+#else
+                4565804, 17528778, 20084411, 25711615, 1724998, 189254,
+                24767264, 10103221, 48596551, 2424777
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1448049969043497, 1789411762943521, 385587766217753,
+                90201620913498, 832999441066823
+#else
+                366633, 21577626, 8173089, 26664313, 30788633, 5745705,
+                59940186, 1344108, 63466311, 12412658
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                516086333293313, 2240508292484616, 1351669528166508,
+                1223255565316488, 750235824427138
+#else
+                43107073, 7690285, 14929416, 33386175, 34898028, 20141445,
+                24162696, 18227928, 63967362, 11179384
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1263624896582495, 1102602401673328, 526302183714372,
+                2152015839128799, 1483839308490010
+#else
+                18289503, 18829478, 8056944, 16430056, 45379140, 7842513,
+                61107423, 32067534, 48424218, 22110928
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                442991718646863, 1599275157036458, 1925389027579192,
+                899514691371390, 350263251085160
+#else
+                476239, 6601091, 60956074, 23831056, 17503544, 28690532,
+                27672958, 13403813, 11052904, 5219329
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1689713572022143, 593854559254373, 978095044791970,
+                1985127338729499, 1676069120347625
+#else
+                20678527, 25178694, 34436965, 8849122, 62099106, 14574751,
+                31186971, 29580702, 9014761, 24975376
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1557207018622683, 340631692799603, 1477725909476187,
+                614735951619419, 2033237123746766
+#else
+                53464795, 23204192, 51146355, 5075807, 65594203, 22019831,
+                34006363, 9160279, 8473550, 30297594
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                968764929340557, 1225534776710944, 662967304013036,
+                1155521416178595, 791142883466590
+#else
+                24900749, 14435722, 17209120, 18261891, 44516588, 9878982,
+                59419555, 17218610, 42540382, 11788947
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1487081286167458, 993039441814934, 1792378982844640,
+                698652444999874, 2153908693179754
+#else
+                63990690, 22159237, 53306774, 14797440, 9652448, 26708528,
+                47071426, 10410732, 42540394, 32095740
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1123181311102823, 685575944875442, 507605465509927,
+                1412590462117473, 568017325228626
+#else
+                51449703, 16736705, 44641714, 10215877, 58011687, 7563910,
+                11871841, 21049238, 48595538, 8464117
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                560258797465417, 2193971151466401, 1824086900849026,
+                579056363542056, 1690063960036441
+#else
+                43708233, 8348506, 52522913, 32692717, 63158658, 27181012,
+                14325288, 8628612, 33313881, 25183915
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1918407319222416, 353767553059963, 1930426334528099,
+                1564816146005724, 1861342381708096
+#else
+                46921872, 28586496, 22367355, 5271547, 66011747, 28765593,
+                42303196, 23317577, 58168128, 27736162
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2131325168777276, 1176636658428908, 1756922641512981,
+                1390243617176012, 1966325177038383
+#else
+                60160060, 31759219, 34483180, 17533252, 32635413, 26180187,
+                15989196, 20716244, 28358191, 29300528
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2063958120364491, 2140267332393533, 699896251574968,
+                273268351312140, 375580724713232
+#else
+                43547083, 30755372, 34757181, 31892468, 57961144, 10429266,
+                50471180, 4072015, 61757200, 5596588
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2024297515263178, 416959329722687, 1079014235017302,
+                171612225573183, 1031677520051053
+#else
+                38872266, 30164383, 12312895, 6213178, 3117142, 16078565,
+                29266239, 2557221, 1768301, 15373193
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2033900009388450, 1744902869870788, 2190580087917640,
+                1949474984254121, 231049754293748
+#else
+                59865506, 30307471, 62515396, 26001078, 66980936, 32642186,
+                66017961, 29049440, 42448372, 3442909
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                343868674606581, 550155864008088, 1450580864229630,
+                481603765195050, 896972360018042
+#else
+                36898293, 5124042, 14181784, 8197961, 18964734, 21615339,
+                22597930, 7176455, 48523386, 13365929
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2151139328380127, 314745882084928, 59756825775204,
+                1676664391494651, 2048348075599360
+#else
+                59231455, 32054473, 8324672, 4690079, 6261860, 890446, 24538107,
+                24984246, 57419264, 30522764
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1528930066340597, 1605003907059576, 1055061081337675,
+                1458319101947665, 1234195845213142
+#else
+                25008885, 22782833, 62803832, 23916421, 16265035, 15721635,
+                683793, 21730648, 15723478, 18390951
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                830430507734812, 1780282976102377, 1425386760709037,
+                362399353095425, 2168861579799910
+#else
+                57448220, 12374378, 40101865, 26528283, 59384749, 21239917,
+                11879681, 5400171, 519526, 32318556
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1155762232730333, 980662895504006, 2053766700883521,
+                490966214077606, 510405877041357
+#else
+                22258397, 17222199, 59239046, 14613015, 44588609, 30603508,
+                46754982, 7315966, 16648397, 7605640
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1683750316716132, 652278688286128, 1221798761193539,
+                1897360681476669, 319658166027343
+#else
+                59027556, 25089834, 58885552, 9719709, 19259459, 18206220,
+                23994941, 28272877, 57640015, 4763277
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                618808732869972, 72755186759744, 2060379135624181,
+                1730731526741822, 48862757828238
+#else
+                45409620, 9220968, 51378240, 1084136, 41632757, 30702041,
+                31088446, 25789909, 55752334, 728111
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1463171970593505, 1143040711767452, 614590986558883,
+                1409210575145591, 1882816996436803
+#else
+                26047201, 21802961, 60208540, 17032633, 24092067, 9158119,
+                62835319, 20998873, 37743427, 28056159
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2230133264691131, 563950955091024, 2042915975426398,
+                827314356293472, 672028980152815
+#else
+                17510331, 33231575, 5854288, 8403524, 17133918, 30441820,
+                38997856, 12327944, 10750447, 10014012
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                264204366029760, 1654686424479449, 2185050199932931,
+                2207056159091748, 506015669043634
+#else
+                56796096, 3936951, 9156313, 24656749, 16498691, 32559785,
+                39627812, 32887699, 3424690, 7540221
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1784446333136569, 1973746527984364, 334856327359575,
+                1156769775884610, 1023950124675478
+#else
+                30322361, 26590322, 11361004, 29411115, 7433303, 4989748,
+                60037442, 17237212, 57864598, 15258045
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2065270940578383, 31477096270353, 306421879113491,
+                181958643936686, 1907105536686083
+#else
+                13054543, 30774935, 19155473, 469045, 54626067, 4566041,
+                5631406, 2711395, 1062915, 28418087
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1496516440779464, 1748485652986458, 872778352227340,
+                818358834654919, 97932669284220
+#else
+                47868616, 22299832, 37599834, 26054466, 61273100, 13005410,
+                61042375, 12194496, 32960380, 1459310
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                471636015770351, 672455402793577, 1804995246884103,
+                1842309243470804, 1501862504981682
+#else
+                19852015, 7027924, 23669353, 10020366, 8586503, 26896525,
+                394196, 27452547, 18638002, 22379495
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1013216974933691, 538921919682598, 1915776722521558,
+                1742822441583877, 1886550687916656
+#else
+                31395515, 15098109, 26581030, 8030562, 50580950, 28547297,
+                9012485, 25970078, 60465776, 28111795
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2094270000643336, 303971879192276, 40801275554748,
+                649448917027930, 1818544418535447
+#else
+                57916680, 31207054, 65111764, 4529533, 25766844, 607986,
+                67095642, 9677542, 34813975, 27098423
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2241737709499165, 549397817447461, 838180519319392,
+                1725686958520781, 1705639080897747
+#else
+                64664349, 33404494, 29348901, 8186665, 1873760, 12489863,
+                36174285, 25714739, 59256019, 25416002
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1216074541925116, 50120933933509, 1565829004133810,
+                721728156134580, 349206064666188
+#else
+                51872508, 18120922, 7766469, 746860, 26346930, 23332670,
+                39775412, 10754587, 57677388, 5203575
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                948617110470858, 346222547451945, 1126511960599975,
+                1759386906004538, 493053284802266
+#else
+                31834314, 14135496, 66338857, 5159117, 20917671, 16786336,
+                59640890, 26216907, 31809242, 7347066
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1454933046815146, 874696014266362, 1467170975468588,
+                1432316382418897, 2111710746366763
+#else
+                57502122, 21680191, 20414458, 13033986, 13716524, 21862551,
+                19797969, 21343177, 15192875, 31466942
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2105387117364450, 1996463405126433, 1303008614294500,
+                851908115948209, 1353742049788635
+#else
+                54445282, 31372712, 1168161, 29749623, 26747876, 19416341,
+                10609329, 12694420, 33473243, 20172328
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                750300956351719, 1487736556065813, 15158817002104,
+                1511998221598392, 971739901354129
+#else
+                33184999, 11180355, 15832085, 22169002, 65475192, 225883,
+                15089336, 22530529, 60973201, 14480052
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1874648163531693, 2124487685930551, 1810030029384882,
+                918400043048335, 586348627300650
+#else
+                31308717, 27934434, 31030839, 31657333, 15674546, 26971549,
+                5496207, 13685227, 27595050, 8737275
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1235084464747900, 1166111146432082, 1745394857881591,
+                1405516473883040, 4463504151617
+#else
+                46790012, 18404192, 10933842, 17376410, 8335351, 26008410,
+                36100512, 20943827, 26498113, 66511
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1663810156463827, 327797390285791, 1341846161759410,
+                1964121122800605, 1747470312055380
+#else
+                22644435, 24792703, 50437087, 4884561, 64003250, 19995065,
+                30540765, 29267685, 53781076, 26039336
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                660005247548233, 2071860029952887, 1358748199950107,
+                911703252219107, 1014379923023831
+#else
+                39091017, 9834844, 18617207, 30873120, 63706907, 20246925,
+                8205539, 13585437, 49981399, 15115438
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2206641276178231, 1690587809721504, 1600173622825126,
+                2156096097634421, 1106822408548216
+#else
+                23711543, 32881517, 31206560, 25191721, 6164646, 23844445,
+                33572981, 32128335, 8236920, 16492939
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1344788193552206, 1949552134239140, 1735915881729557,
+                675891104100469, 1834220014427292
+#else
+                43198286, 20038905, 40809380, 29050590, 25005589, 25867162,
+                19574901, 10071562, 6708380, 27332008
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1920949492387964, 158885288387530, 70308263664033,
+                626038464897817, 1468081726101009
+#else
+                2101372, 28624378, 19702730, 2367575, 51681697, 1047674,
+                5301017, 9328700, 29955601, 21876122
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                622221042073383, 1210146474039168, 1742246422343683,
+                1403839361379025, 417189490895736
+#else
+                3096359, 9271816, 45488000, 18032587, 52260867, 25961494,
+                41216721, 20918836, 57191288, 6216607
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                22727256592983, 168471543384997, 1324340989803650,
+                1839310709638189, 504999476432775
+#else
+                34493015, 338662, 41913253, 2510421, 37895298, 19734218,
+                24822829, 27407865, 40341383, 7525078
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1313240518756327, 1721896294296942, 52263574587266,
+                2065069734239232, 804910473424630
+#else
+                44042215, 19568808, 16133486, 25658254, 63719298, 778787,
+                66198528, 30771936, 47722230, 11994100
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1337466662091884, 1287645354669772, 2018019646776184,
+                652181229374245, 898011753211715
+#else
+                21691500, 19929806, 66467532, 19187410, 3285880, 30070836,
+                42044197, 9718257, 59631427, 13381417
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1969792547910734, 779969968247557, 2011350094423418,
+                1823964252907487, 1058949448296945
+#else
+                18445390, 29352196, 14979845, 11622458, 65381754, 29971451,
+                23111647, 27179185, 28535281, 15779576
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                207343737062002, 1118176942430253, 758894594548164,
+                806764629546266, 1157700123092949
+#else
+                30098034, 3089662, 57874477, 16662134, 45801924, 11308410,
+                53040410, 12021729, 9955285, 17251076
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1273565321399022, 1638509681964574, 759235866488935,
+                666015124346707, 897983460943405
+#else
+                9734894, 18977602, 59635230, 24415696, 2060391, 11313496,
+                48682835, 9924398, 20194861, 13380996
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1717263794012298, 1059601762860786, 1837819172257618,
+                1054130665797229, 680893204263559
+#else
+                40730762, 25589224, 44941042, 15789296, 49053522, 27385639,
+                65123949, 15707770, 26342023, 10146099
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2237039662793603, 2249022333361206, 2058613546633703,
+                149454094845279, 2215176649164582
+#else
+                41091971, 33334488, 21339190, 33513044, 19745255, 30675732,
+                37471583, 2227039, 21612326, 33008704
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                79472182719605, 1851130257050174, 1825744808933107,
+                821667333481068, 781795293511946
+#else
+                54031477, 1184227, 23562814, 27583990, 46757619, 27205717,
+                25764460, 12243797, 46252298, 11649657
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                755822026485370, 152464789723500, 1178207602290608,
+                410307889503239, 156581253571278
+#else
+                57077370, 11262625, 27384172, 2271902, 26947504, 17556661,
+                39943, 6114064, 33514190, 2333242
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1418185496130297, 484520167728613, 1646737281442950,
+                1401487684670265, 1349185550126961
+#else
+                45675257, 21132610, 8119781, 7219913, 45278342, 24538297,
+                60429113, 20883793, 24350577, 20104431
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1495380034400429, 325049476417173, 46346894893933,
+                1553408840354856, 828980101835683
+#else
+                62992557, 22282898, 43222677, 4843614, 37020525, 690622,
+                35572776, 23147595, 8317859, 12352766
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1280337889310282, 2070832742866672, 1640940617225222,
+                2098284908289951, 450929509534434
+#else
+                18200138, 19078521, 34021104, 30857812, 43406342, 24451920,
+                43556767, 31266881, 20712162, 6719373
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                407703353998781, 126572141483652, 286039827513621,
+                1999255076709338, 2030511179441770
+#else
+                26656189, 6075253, 59250308, 1886071, 38764821, 4262325,
+                11117530, 29791222, 26224234, 30256974
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1254958221100483, 1153235960999843, 942907704968834,
+                637105404087392, 1149293270147267
+#else
+                49939907, 18700334, 63713187, 17184554, 47154818, 14050419,
+                21728352, 9493610, 18620611, 17125804
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                894249020470196, 400291701616810, 406878712230981,
+                1599128793487393, 1145868722604026
+#else
+                53785524, 13325348, 11432106, 5964811, 18609221, 6062965,
+                61839393, 23828875, 36407290, 17074774
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1497955250203334, 110116344653260, 1128535642171976,
+                1900106496009660, 129792717460909
+#else
+                43248326, 22321272, 26961356, 1640861, 34695752, 16816491,
+                12248508, 28313793, 13735341, 1934062
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                452487513298665, 1352120549024569, 1173495883910956,
+                1999111705922009, 367328130454226
+#else
+                25089769, 6742589, 17081145, 20148166, 21909292, 17486451,
+                51972569, 29789085, 45830866, 5473615
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1717539401269642, 1475188995688487, 891921989653942,
+                836824441505699, 1885988485608364
+#else
+                31883658, 25593331, 1083431, 21982029, 22828470, 13290673,
+                59983779, 12469655, 29111212, 28103418
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1241784121422547, 187337051947583, 1118481812236193,
+                428747751936362, 30358898927325
+#else
+                24244947, 18504025, 40845887, 2791539, 52111265, 16666677,
+                24367466, 6388839, 56813277, 452382
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2022432361201842, 1088816090685051, 1977843398539868,
+                1854834215890724, 564238862029357
+#else
+                41468082, 30136590, 5217915, 16224624, 19987036, 29472163,
+                42872612, 27639183, 15766061, 8407814
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                938868489100585, 1100285072929025, 1017806255688848,
+                1957262154788833, 152787950560442
+#else
+                46701865, 13990230, 15495425, 16395525, 5377168, 15166495,
+                58191841, 29165478, 59040954, 2276717
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                867319417678923, 620471962942542, 226032203305716,
+                342001443957629, 1761675818237336
+#else
+                30157899, 12924066, 49396814, 9245752, 19895028, 3368142,
+                43281277, 5096218, 22740376, 26251015
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1295072362439987, 931227904689414, 1355731432641687,
+                922235735834035, 892227229410209
+#else
+                2041139, 19298082, 7783686, 13876377, 41161879, 20201972,
+                24051123, 13742383, 51471265, 13295221
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1680989767906154, 535362787031440, 2136691276706570,
+                1942228485381244, 1267350086882274
+#else
+                33338218, 25048699, 12532112, 7977527, 9106186, 31839181,
+                49388668, 28941459, 62657506, 18884987
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                366018233770527, 432660629755596, 126409707644535,
+                1973842949591662, 645627343442376
+#else
+                47063583, 5454096, 52762316, 6447145, 28862071, 1883651,
+                64639598, 29412551, 7770568, 9620597
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                535509430575217, 546885533737322, 1524675609547799,
+                2138095752851703, 1260738089896827
+#else
+                23208049, 7979712, 33071466, 8149229, 1758231, 22719437,
+                30945527, 31860109, 33606523, 18786461
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1159906385590467, 2198530004321610, 714559485023225,
+                81880727882151, 1484020820037082
+#else
+                1439939, 17283952, 66028874, 32760649, 4625401, 10647766,
+                62065063, 1220117, 30494170, 22113633
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1377485731340769, 2046328105512000, 1802058637158797,
+                62146136768173, 1356993908853901
+#else
+                62071265, 20526136, 64138304, 30492664, 15640973, 26852766,
+                40369837, 926049, 65424525, 20220784
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2013612215646735, 1830770575920375, 536135310219832,
+                609272325580394, 270684344495013
+#else
+                13908495, 30005160, 30919927, 27280607, 45587000, 7989038,
+                9021034, 9078865, 3353509, 4033511
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1237542585982777, 2228682050256790, 1385281931622824,
+                593183794882890, 493654978552689
+#else
+                37445433, 18440821, 32259990, 33209950, 24295848, 20642309,
+                23161162, 8839127, 27485041, 7356032
+#endif
+            }},
+        },
+    },
+    {
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                47341488007760, 1891414891220257, 983894663308928,
+                176161768286818, 1126261115179708
+#else
+                9661008, 705443, 11980065, 28184278, 65480320, 14661172,
+                60762722, 2625014, 28431036, 16782598
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1694030170963455, 502038567066200, 1691160065225467,
+                949628319562187, 275110186693066
+#else
+                43269631, 25243016, 41163352, 7480957, 49427195, 25200248,
+                44562891, 14150564, 15970762, 4099461
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1124515748676336, 1661673816593408, 1499640319059718,
+                1584929449166988, 558148594103306
+#else
+                29262576, 16756590, 26350592, 24760869, 8529670, 22346382,
+                13617292, 23617289, 11465738, 8317062
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1784525599998356, 1619698033617383, 2097300287550715,
+                258265458103756, 1905684794832758
+#else
+                41615764, 26591503, 32500199, 24135381, 44070139, 31252209,
+                14898636, 3848455, 20969334, 28396916
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1288941072872766, 931787902039402, 190731008859042,
+                2006859954667190, 1005931482221702
+#else
+                46724414, 19206718, 48772458, 13884721, 34069410, 2842113,
+                45498038, 29904543, 11177094, 14989547
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1465551264822703, 152905080555927, 680334307368453,
+                173227184634745, 666407097159852
+#else
+                42612143, 21838415, 16959895, 2278463, 12066309, 10137771,
+                13515641, 2581286, 38621356, 9930239
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2111017076203943, 1378760485794347, 1248583954016456,
+                1352289194864422, 1895180776543896
+#else
+                49357223, 31456605, 16544299, 20545132, 51194056, 18605350,
+                18345766, 20150679, 16291480, 28240394
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                171348223915638, 662766099800389, 462338943760497,
+                466917763340314, 656911292869115
+#else
+                33879670, 2553287, 32678213, 9875984, 8534129, 6889387,
+                57432090, 6957616, 4368891, 9788741
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                488623681976577, 866497561541722, 1708105560937768,
+                1673781214218839, 1506146329818807
+#else
+                16660737, 7281060, 56278106, 12911819, 20108584, 25452756,
+                45386327, 24941283, 16250551, 22443329
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                160425464456957, 950394373239689, 430497123340934,
+                711676555398832, 320964687779005
+#else
+                47343357, 2390525, 50557833, 14161979, 1905286, 6414907,
+                4689584, 10604807, 36918461, 4782746
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                988979367990485, 1359729327576302, 1301834257246029,
+                294141160829308, 29348272277475
+#else
+                65754325, 14736940, 59741422, 20261545, 7710541, 19398842,
+                57127292, 4383044, 22546403, 437323
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1434382743317910, 100082049942065, 221102347892623,
+                186982837860588, 1305765053501834
+#else
+                31665558, 21373968, 50922033, 1491338, 48740239, 3294681,
+                27343084, 2786261, 36475274, 19457415
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                2205916462268190, 499863829790820, 961960554686616,
+                158062762756985, 1841471168298305
+#else
+                52641566, 32870716, 33734756, 7448551, 19294360, 14334329,
+                47418233, 2355318, 47824193, 27440058
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1191737341426592, 1847042034978363, 1382213545049056,
+                1039952395710448, 788812858896859
+#else
+                15121312, 17758270, 6377019, 27523071, 56310752, 20596586,
+                18952176, 15496498, 37728731, 11754227
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1346965964571152, 1291881610839830, 2142916164336056,
+                786821641205979, 1571709146321039
+#else
+                64471568, 20071356, 8488726, 19250536, 12728760, 31931939,
+                7141595, 11724556, 22761615, 23420291
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                787164375951248, 202869205373189, 1356590421032140,
+                1431233331032510, 786341368775957
+#else
+                16918416, 11729663, 49025285, 3022986, 36093132, 20214772,
+                38367678, 21327038, 32851221, 11717399
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                492448143532951, 304105152670757, 1761767168301056,
+                233782684697790, 1981295323106089
+#else
+                11166615, 7338049, 60386341, 4531519, 37640192, 26252376,
+                31474878, 3483633, 65915689, 29523600
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                665807507761866, 1343384868355425, 895831046139653,
+                439338948736892, 1986828765695105
+#else
+                66923210, 9921304, 31456609, 20017994, 55095045, 13348922,
+                33142652, 6546660, 47123585, 29606055
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                756096210874553, 1721699973539149, 258765301727885,
+                1390588532210645, 1212530909934781
+#else
+                34648249, 11266711, 55911757, 25655328, 31703693, 3855903,
+                58571733, 20721383, 36336829, 18068118
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                852891097972275, 1816988871354562, 1543772755726524,
+                1174710635522444, 202129090724628
+#else
+                49102387, 12709067, 3991746, 27075244, 45617340, 23004006,
+                35973516, 17504552, 10928916, 3011958
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1205281565824323, 22430498399418, 992947814485516,
+                1392458699738672, 688441466734558
+#else
+                60151107, 17960094, 31696058, 334240, 29576716, 14796075,
+                36277808, 20749251, 18008030, 10258577
+#endif
+            }},
+        },
+        {
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1050627428414972, 1955849529137135, 2171162376368357,
+                91745868298214, 447733118757826
+#else
+                44660220, 15655568, 7018479, 29144429, 36794597, 32352840,
+                65255398, 1367119, 25127874, 6671743
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1287181461435438, 622722465530711, 880952150571872,
+                741035693459198, 311565274989772
+#else
+                29701166, 19180498, 56230743, 9279287, 67091296, 13127209,
+                21382910, 11042292, 25838796, 4642684
+#endif
+            }},
+            {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+                1003649078149734, 545233927396469, 1849786171789880,
+                1318943684880434, 280345687170552
+#else
+                46678630, 14955536, 42982517, 8124618, 61739576, 27563961,
+                30468146, 19653792, 18423288, 4177476
+#endif
+            }},
+        },
+    },
+};
+
+#endif  // OPENSSL_SMALL
+
+// Bi[i] = (2*i+1)*B
+static const ge_precomp Bi[8] = {
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1288382639258501, 245678601348599, 269427782077623,
+            1462984067271730, 137412439391563
+#else
+            25967493, 19198397, 29566455, 3660896, 54414519, 4014786, 27544626,
+            21800161, 61029707, 2047604
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            62697248952638, 204681361388450, 631292143396476, 338455783676468,
+            1213667448819585
+#else
+            54563134, 934261, 64385954, 3049989, 66381436, 9406985, 12720692,
+            5043384, 19500929, 18085054
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            301289933810280, 1259582250014073, 1422107436869536,
+            796239922652654, 1953934009299142
+#else
+            58370664, 4489569, 9688441, 18769238, 10184608, 21191052, 29287918,
+            11864899, 42594502, 29115885
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1601611775252272, 1720807796594148, 1132070835939856,
+            1260455018889551, 2147779492816911
+#else
+            15636272, 23865875, 24204772, 25642034, 616976, 16869170, 27787599,
+            18782243, 28944399, 32004408
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            316559037616741, 2177824224946892, 1459442586438991,
+            1461528397712656, 751590696113597
+#else
+            16568933, 4717097, 55552716, 32452109, 15682895, 21747389, 16354576,
+            21778470, 7689661, 11199574
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1850748884277385, 1200145853858453, 1068094770532492,
+            672251375690438, 1586055907191707
+#else
+            30464137, 27578307, 55329429, 17883566, 23220364, 15915852, 7512774,
+            10017326, 49359771, 23634074
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            769950342298419, 132954430919746, 844085933195555, 974092374476333,
+            726076285546016
+#else
+            10861363, 11473154, 27284546, 1981175, 37044515, 12577860, 32867885,
+            14515107, 51670560, 10819379
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            425251763115706, 608463272472562, 442562545713235, 837766094556764,
+            374555092627893
+#else
+            4708026, 6336745, 20377586, 9066809, 55836755, 6594695, 41455196,
+            12483687, 54440373, 5581305
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1086255230780037, 274979815921559, 1960002765731872,
+            929474102396301, 1190409889297339
+#else
+            19563141, 16186464, 37722007, 4097518, 10237984, 29206317, 28542349,
+            13850243, 43430843, 17738489
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            665000864555967, 2065379846933859, 370231110385876, 350988370788628,
+            1233371373142985
+#else
+            5153727, 9909285, 1723747, 30776558, 30523604, 5516873, 19480852,
+            5230134, 43156425, 18378665
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            2019367628972465, 676711900706637, 110710997811333,
+            1108646842542025, 517791959672113
+#else
+            36839857, 30090922, 7665485, 10083793, 28475525, 1649722, 20654025,
+            16520125, 30598449, 7715701
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            965130719900578, 247011430587952, 526356006571389, 91986625355052,
+            2157223321444601
+#else
+            28881826, 14381568, 9657904, 3680757, 46927229, 7843315, 35708204,
+            1370707, 29794553, 32145132
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1802695059465007, 1664899123557221, 593559490740857,
+            2160434469266659, 927570450755031
+#else
+            44589871, 26862249, 14201701, 24808930, 43598457, 8844725, 18474211,
+            32192982, 54046167, 13821876
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1725674970513508, 1933645953859181, 1542344539275782,
+            1767788773573747, 1297447965928905
+#else
+            60653668, 25714560, 3374701, 28813570, 40010246, 22982724, 31655027,
+            26342105, 18853321, 19333481
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1381809363726107, 1430341051343062, 2061843536018959,
+            1551778050872521, 2036394857967624
+#else
+            4566811, 20590564, 38133974, 21313742, 59506191, 30723862, 58594505,
+            23123294, 2207752, 30344648
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1970894096313054, 528066325833207, 1619374932191227,
+            2207306624415883, 1169170329061080
+#else
+            41954014, 29368610, 29681143, 7868801, 60254203, 24130566, 54671499,
+            32891431, 35997400, 17421995
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            2070390218572616, 1458919061857835, 624171843017421,
+            1055332792707765, 433987520732508
+#else
+            25576264, 30851218, 7349803, 21739588, 16472781, 9300885, 3844789,
+            15725684, 171356, 6466918
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            893653801273833, 1168026499324677, 1242553501121234,
+            1306366254304474, 1086752658510815
+#else
+            23103977, 13316479, 9739013, 17404951, 817874, 18515490, 8965338,
+            19466374, 36393951, 16193876
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            213454002618221, 939771523987438, 1159882208056014, 317388369627517,
+            621213314200687
+#else
+            33587053, 3180712, 64714734, 14003686, 50205390, 17283591, 17238397,
+            4729455, 49034351, 9256799
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1971678598905747, 338026507889165, 762398079972271, 655096486107477,
+            42299032696322
+#else
+            41926547, 29380300, 32336397, 5036987, 45872047, 11360616, 22616405,
+            9761698, 47281666, 630304
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            177130678690680, 1754759263300204, 1864311296286618,
+            1180675631479880, 1292726903152791
+#else
+            53388152, 2639452, 42871404, 26147950, 9494426, 27780403, 60554312,
+            17593437, 64659607, 19263131
+#endif
+        }},
+    },
+    {
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1913163449625248, 460779200291993, 2193883288642314,
+            1008900146920800, 1721983679009502
+#else
+            63957664, 28508356, 9282713, 6866145, 35201802, 32691408, 48168288,
+            15033783, 25105118, 25659556
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            1070401523076875, 1272492007800961, 1910153608563310,
+            2075579521696771, 1191169788841221
+#else
+            42782475, 15950225, 35307649, 18961608, 55446126, 28463506, 1573891,
+            30928545, 2198789, 17749813
+#endif
+        }},
+        {{
+#if defined(BORINGSSL_CURVE25519_64BIT)
+            692896803108118, 500174642072499, 2068223309439677,
+            1162190621851337, 1426986007309901
+#else
+            64009494, 10324966, 64867251, 7453182, 61661885, 30818928, 53296841,
+            17317989, 34647629, 21263748
+#endif
+        }},
+    },
+};
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h
new file mode 100644
index 0000000..6160dd3
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h	
@@ -0,0 +1,154 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#ifndef OPENSSL_HEADER_CURVE25519_INTERNAL_H
+#define OPENSSL_HEADER_CURVE25519_INTERNAL_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#include <openssl_grpc/base.h>
+
+#include "../../crypto/internal.h"
+
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_APPLE)
+#define BORINGSSL_X25519_NEON
+
+// x25519_NEON is defined in asm/x25519-arm.S.
+void x25519_NEON(uint8_t out[32], const uint8_t scalar[32],
+                 const uint8_t point[32]);
+#endif
+
+#if defined(BORINGSSL_HAS_UINT128)
+#define BORINGSSL_CURVE25519_64BIT
+#endif
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+// fe means field element. Here the field is \Z/(2^255-19). An element t,
+// entries t[0]...t[4], represents the integer t[0]+2^51 t[1]+2^102 t[2]+2^153
+// t[3]+2^204 t[4].
+// fe limbs are bounded by 1.125*2^51.
+// Multiplication and carrying produce fe from fe_loose.
+typedef struct fe { uint64_t v[5]; } fe;
+
+// fe_loose limbs are bounded by 3.375*2^51.
+// Addition and subtraction produce fe_loose from (fe, fe).
+typedef struct fe_loose { uint64_t v[5]; } fe_loose;
+#else
+// fe means field element. Here the field is \Z/(2^255-19). An element t,
+// entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
+// t[3]+2^102 t[4]+...+2^230 t[9].
+// fe limbs are bounded by 1.125*2^26,1.125*2^25,1.125*2^26,1.125*2^25,etc.
+// Multiplication and carrying produce fe from fe_loose.
+typedef struct fe { uint32_t v[10]; } fe;
+
+// fe_loose limbs are bounded by 3.375*2^26,3.375*2^25,3.375*2^26,3.375*2^25,etc.
+// Addition and subtraction produce fe_loose from (fe, fe).
+typedef struct fe_loose { uint32_t v[10]; } fe_loose;
+#endif
+
+// ge means group element.
+//
+// Here the group is the set of pairs (x,y) of field elements (see fe.h)
+// satisfying -x^2 + y^2 = 1 + d x^2y^2
+// where d = -121665/121666.
+//
+// Representations:
+//   ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
+//   ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+//   ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+//   ge_precomp (Duif): (y+x,y-x,2dxy)
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+} ge_p2;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p3;
+
+typedef struct {
+  fe_loose X;
+  fe_loose Y;
+  fe_loose Z;
+  fe_loose T;
+} ge_p1p1;
+
+typedef struct {
+  fe_loose yplusx;
+  fe_loose yminusx;
+  fe_loose xy2d;
+} ge_precomp;
+
+typedef struct {
+  fe_loose YplusX;
+  fe_loose YminusX;
+  fe_loose Z;
+  fe_loose T2d;
+} ge_cached;
+
+void x25519_ge_tobytes(uint8_t s[32], const ge_p2 *h);
+int x25519_ge_frombytes_vartime(ge_p3 *h, const uint8_t *s);
+void x25519_ge_p3_to_cached(ge_cached *r, const ge_p3 *p);
+void x25519_ge_p1p1_to_p2(ge_p2 *r, const ge_p1p1 *p);
+void x25519_ge_p1p1_to_p3(ge_p3 *r, const ge_p1p1 *p);
+void x25519_ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
+void x25519_ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
+void x25519_ge_scalarmult_small_precomp(
+    ge_p3 *h, const uint8_t a[32], const uint8_t precomp_table[15 * 2 * 32]);
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t a[32]);
+void x25519_ge_scalarmult(ge_p2 *r, const uint8_t *scalar, const ge_p3 *A);
+void x25519_sc_reduce(uint8_t s[64]);
+
+enum spake2_state_t {
+  spake2_state_init = 0,
+  spake2_state_msg_generated,
+  spake2_state_key_generated,
+};
+
+struct spake2_ctx_st {
+  uint8_t private_key[32];
+  uint8_t my_msg[32];
+  uint8_t password_scalar[32];
+  uint8_t password_hash[64];
+  uint8_t *my_name;
+  size_t my_name_len;
+  uint8_t *their_name;
+  size_t their_name_len;
+  enum spake2_role_t my_role;
+  enum spake2_state_t state;
+  char disable_password_scalar_hack;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CURVE25519_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h.grpc_back
new file mode 100644
index 0000000..be3e265
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/internal.h.grpc_back	
@@ -0,0 +1,154 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#ifndef OPENSSL_HEADER_CURVE25519_INTERNAL_H
+#define OPENSSL_HEADER_CURVE25519_INTERNAL_H
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#include <openssl/base.h>
+
+#include "../../crypto/internal.h"
+
+
+#if defined(OPENSSL_ARM) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_APPLE)
+#define BORINGSSL_X25519_NEON
+
+// x25519_NEON is defined in asm/x25519-arm.S.
+void x25519_NEON(uint8_t out[32], const uint8_t scalar[32],
+                 const uint8_t point[32]);
+#endif
+
+#if defined(BORINGSSL_HAS_UINT128)
+#define BORINGSSL_CURVE25519_64BIT
+#endif
+
+#if defined(BORINGSSL_CURVE25519_64BIT)
+// fe means field element. Here the field is \Z/(2^255-19). An element t,
+// entries t[0]...t[4], represents the integer t[0]+2^51 t[1]+2^102 t[2]+2^153
+// t[3]+2^204 t[4].
+// fe limbs are bounded by 1.125*2^51.
+// Multiplication and carrying produce fe from fe_loose.
+typedef struct fe { uint64_t v[5]; } fe;
+
+// fe_loose limbs are bounded by 3.375*2^51.
+// Addition and subtraction produce fe_loose from (fe, fe).
+typedef struct fe_loose { uint64_t v[5]; } fe_loose;
+#else
+// fe means field element. Here the field is \Z/(2^255-19). An element t,
+// entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
+// t[3]+2^102 t[4]+...+2^230 t[9].
+// fe limbs are bounded by 1.125*2^26,1.125*2^25,1.125*2^26,1.125*2^25,etc.
+// Multiplication and carrying produce fe from fe_loose.
+typedef struct fe { uint32_t v[10]; } fe;
+
+// fe_loose limbs are bounded by 3.375*2^26,3.375*2^25,3.375*2^26,3.375*2^25,etc.
+// Addition and subtraction produce fe_loose from (fe, fe).
+typedef struct fe_loose { uint32_t v[10]; } fe_loose;
+#endif
+
+// ge means group element.
+//
+// Here the group is the set of pairs (x,y) of field elements (see fe.h)
+// satisfying -x^2 + y^2 = 1 + d x^2y^2
+// where d = -121665/121666.
+//
+// Representations:
+//   ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
+//   ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+//   ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+//   ge_precomp (Duif): (y+x,y-x,2dxy)
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+} ge_p2;
+
+typedef struct {
+  fe X;
+  fe Y;
+  fe Z;
+  fe T;
+} ge_p3;
+
+typedef struct {
+  fe_loose X;
+  fe_loose Y;
+  fe_loose Z;
+  fe_loose T;
+} ge_p1p1;
+
+typedef struct {
+  fe_loose yplusx;
+  fe_loose yminusx;
+  fe_loose xy2d;
+} ge_precomp;
+
+typedef struct {
+  fe_loose YplusX;
+  fe_loose YminusX;
+  fe_loose Z;
+  fe_loose T2d;
+} ge_cached;
+
+void x25519_ge_tobytes(uint8_t s[32], const ge_p2 *h);
+int x25519_ge_frombytes_vartime(ge_p3 *h, const uint8_t *s);
+void x25519_ge_p3_to_cached(ge_cached *r, const ge_p3 *p);
+void x25519_ge_p1p1_to_p2(ge_p2 *r, const ge_p1p1 *p);
+void x25519_ge_p1p1_to_p3(ge_p3 *r, const ge_p1p1 *p);
+void x25519_ge_add(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
+void x25519_ge_sub(ge_p1p1 *r, const ge_p3 *p, const ge_cached *q);
+void x25519_ge_scalarmult_small_precomp(
+    ge_p3 *h, const uint8_t a[32], const uint8_t precomp_table[15 * 2 * 32]);
+void x25519_ge_scalarmult_base(ge_p3 *h, const uint8_t a[32]);
+void x25519_ge_scalarmult(ge_p2 *r, const uint8_t *scalar, const ge_p3 *A);
+void x25519_sc_reduce(uint8_t s[64]);
+
+enum spake2_state_t {
+  spake2_state_init = 0,
+  spake2_state_msg_generated,
+  spake2_state_key_generated,
+};
+
+struct spake2_ctx_st {
+  uint8_t private_key[32];
+  uint8_t my_msg[32];
+  uint8_t password_scalar[32];
+  uint8_t password_hash[64];
+  uint8_t *my_name;
+  size_t my_name_len;
+  uint8_t *their_name;
+  size_t their_name_len;
+  enum spake2_role_t my_role;
+  enum spake2_state_t state;
+  char disable_password_scalar_hack;
+};
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CURVE25519_INTERNAL_H
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c
new file mode 100644
index 0000000..26ff9ce
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c	
@@ -0,0 +1,1063 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// The field arithmetic code is generated by Fiat
+// (https://github.com/mit-plv/fiat-crypto), which is MIT licensed.
+//
+// An implementation of the NIST P-256 elliptic curve point multiplication.
+// 256-bit Montgomery form, generated using fiat-crypto, for 64 and 32-bit.
+// Field operations with inputs in [0,p) return outputs in [0,p).
+
+#include <openssl_grpc/base.h>
+
+#include <openssl_grpc/bn.h>
+#include <openssl_grpc/ec.h>
+#include <openssl_grpc/err.h>
+#include <openssl_grpc/mem.h>
+#include <openssl_grpc/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "../../crypto/fipsmodule/delocate.h"
+#include "../../crypto/fipsmodule/ec/internal.h"
+#include "../../crypto/internal.h"
+
+
+// MSVC does not implement uint128_t, and crashes with intrinsics
+#if defined(BORINGSSL_HAS_UINT128)
+#define BORINGSSL_NISTP256_64BIT 1
+#include "p256_64.h"
+#else
+#include "p256_32.h"
+#endif
+
+
+// utility functions, handwritten
+
+#define NBYTES 32
+
+#if defined(BORINGSSL_NISTP256_64BIT)
+
+#define NLIMBS 4
+typedef uint64_t limb_t;
+typedef uint64_t fe[NLIMBS];
+#else // 64BIT; else 32BIT
+
+#define NLIMBS 8
+typedef uint32_t limb_t;
+typedef uint32_t fe[NLIMBS];
+
+#endif // 64BIT
+
+#define fe_add fiat_p256_add
+#define fe_sub fiat_p256_sub
+#define fe_opp fiat_p256_opp
+
+#define fe_mul fiat_p256_mul
+#define fe_sqr fiat_p256_square
+
+#define fe_tobytes fiat_p256_to_bytes
+#define fe_frombytes fiat_p256_from_bytes
+
+static limb_t fe_nz(const limb_t in1[NLIMBS]) {
+  limb_t ret;
+  fiat_p256_nonzero(&ret, in1);
+  return ret;
+}
+
+static void fe_copy(limb_t out[NLIMBS], const limb_t in1[NLIMBS]) {
+  for (int i = 0; i < NLIMBS; i++) {
+    out[i] = in1[i];
+  }
+}
+
+static void fe_cmovznz(limb_t out[NLIMBS], limb_t t, const limb_t z[NLIMBS],
+                       const limb_t nz[NLIMBS]) {
+  fiat_p256_selectznz(out, !!t, z, nz);
+}
+
+static void fe_from_montgomery(fe x) {
+  fiat_p256_from_montgomery(x, x);
+}
+
+static void fe_from_generic(fe out, const EC_FELEM *in) {
+  fe_frombytes(out, in->bytes);
+}
+
+static void fe_to_generic(EC_FELEM *out, const fe in) {
+  // This works because 256 is a multiple of 64, so there are no excess bytes to
+  // zero when rounding up to |BN_ULONG|s.
+  OPENSSL_STATIC_ASSERT(
+      256 / 8 == sizeof(BN_ULONG) * ((256 + BN_BITS2 - 1) / BN_BITS2),
+      "fe_tobytes leaves bytes uninitialized");
+  fe_tobytes(out->bytes, in);
+}
+
+// fe_inv calculates |out| = |in|^{-1}
+//
+// Based on Fermat's Little Theorem:
+//   a^p = a (mod p)
+//   a^{p-1} = 1 (mod p)
+//   a^{p-2} = a^{-1} (mod p)
+static void fe_inv(fe out, const fe in) {
+  fe ftmp, ftmp2;
+  // each e_I will hold |in|^{2^I - 1}
+  fe e2, e4, e8, e16, e32, e64;
+
+  fe_sqr(ftmp, in);  // 2^1
+  fe_mul(ftmp, in, ftmp);  // 2^2 - 2^0
+  fe_copy(e2, ftmp);
+  fe_sqr(ftmp, ftmp);  // 2^3 - 2^1
+  fe_sqr(ftmp, ftmp);  // 2^4 - 2^2
+  fe_mul(ftmp, ftmp, e2);  // 2^4 - 2^0
+  fe_copy(e4, ftmp);
+  fe_sqr(ftmp, ftmp);  // 2^5 - 2^1
+  fe_sqr(ftmp, ftmp);  // 2^6 - 2^2
+  fe_sqr(ftmp, ftmp);  // 2^7 - 2^3
+  fe_sqr(ftmp, ftmp);  // 2^8 - 2^4
+  fe_mul(ftmp, ftmp, e4);  // 2^8 - 2^0
+  fe_copy(e8, ftmp);
+  for (size_t i = 0; i < 8; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^16 - 2^8
+  fe_mul(ftmp, ftmp, e8);  // 2^16 - 2^0
+  fe_copy(e16, ftmp);
+  for (size_t i = 0; i < 16; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^32 - 2^16
+  fe_mul(ftmp, ftmp, e16);  // 2^32 - 2^0
+  fe_copy(e32, ftmp);
+  for (size_t i = 0; i < 32; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^64 - 2^32
+  fe_copy(e64, ftmp);
+  fe_mul(ftmp, ftmp, in);  // 2^64 - 2^32 + 2^0
+  for (size_t i = 0; i < 192; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^256 - 2^224 + 2^192
+
+  fe_mul(ftmp2, e64, e32);  // 2^64 - 2^0
+  for (size_t i = 0; i < 16; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^80 - 2^16
+  fe_mul(ftmp2, ftmp2, e16);  // 2^80 - 2^0
+  for (size_t i = 0; i < 8; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^88 - 2^8
+  fe_mul(ftmp2, ftmp2, e8);  // 2^88 - 2^0
+  for (size_t i = 0; i < 4; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^92 - 2^4
+  fe_mul(ftmp2, ftmp2, e4);  // 2^92 - 2^0
+  fe_sqr(ftmp2, ftmp2);  // 2^93 - 2^1
+  fe_sqr(ftmp2, ftmp2);  // 2^94 - 2^2
+  fe_mul(ftmp2, ftmp2, e2);  // 2^94 - 2^0
+  fe_sqr(ftmp2, ftmp2);  // 2^95 - 2^1
+  fe_sqr(ftmp2, ftmp2);  // 2^96 - 2^2
+  fe_mul(ftmp2, ftmp2, in);  // 2^96 - 3
+
+  fe_mul(out, ftmp2, ftmp);  // 2^256 - 2^224 + 2^192 + 2^96 - 3
+}
+
+// Group operations
+// ----------------
+//
+// Building on top of the field operations we have the operations on the
+// elliptic curve group itself. Points on the curve are represented in Jacobian
+// coordinates.
+//
+// Both operations were transcribed to Coq and proven to correspond to naive
+// implementations using Affine coordinates, for all suitable fields.  In the
+// Coq proofs, issues of constant-time execution and memory layout (aliasing)
+// conventions were not considered. Specification of affine coordinates:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Spec/WeierstrassCurve.v#L28>
+// As a sanity check, a proof that these points form a commutative group:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/AffineProofs.v#L33>
+
+// point_double calculates 2*(x_in, y_in, z_in)
+//
+// The method is taken from:
+//   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
+//
+// Coq transcription and correctness proof:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L93>
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L201>
+//
+// Outputs can equal corresponding inputs, i.e., x_out == x_in is allowed.
+// while x_out == y_in is not (maybe this works, but it's not tested).
+static void point_double(fe x_out, fe y_out, fe z_out,
+                         const fe x_in, const fe y_in, const fe z_in) {
+  fe delta, gamma, beta, ftmp, ftmp2, tmptmp, alpha, fourbeta;
+  // delta = z^2
+  fe_sqr(delta, z_in);
+  // gamma = y^2
+  fe_sqr(gamma, y_in);
+  // beta = x*gamma
+  fe_mul(beta, x_in, gamma);
+
+  // alpha = 3*(x-delta)*(x+delta)
+  fe_sub(ftmp, x_in, delta);
+  fe_add(ftmp2, x_in, delta);
+
+  fe_add(tmptmp, ftmp2, ftmp2);
+  fe_add(ftmp2, ftmp2, tmptmp);
+  fe_mul(alpha, ftmp, ftmp2);
+
+  // x' = alpha^2 - 8*beta
+  fe_sqr(x_out, alpha);
+  fe_add(fourbeta, beta, beta);
+  fe_add(fourbeta, fourbeta, fourbeta);
+  fe_add(tmptmp, fourbeta, fourbeta);
+  fe_sub(x_out, x_out, tmptmp);
+
+  // z' = (y + z)^2 - gamma - delta
+  fe_add(delta, gamma, delta);
+  fe_add(ftmp, y_in, z_in);
+  fe_sqr(z_out, ftmp);
+  fe_sub(z_out, z_out, delta);
+
+  // y' = alpha*(4*beta - x') - 8*gamma^2
+  fe_sub(y_out, fourbeta, x_out);
+  fe_add(gamma, gamma, gamma);
+  fe_sqr(gamma, gamma);
+  fe_mul(y_out, alpha, y_out);
+  fe_add(gamma, gamma, gamma);
+  fe_sub(y_out, y_out, gamma);
+}
+
+// point_add calcuates (x1, y1, z1) + (x2, y2, z2)
+//
+// The method is taken from:
+//   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#addition-add-2007-bl,
+// adapted for mixed addition (z2 = 1, or z2 = 0 for the point at infinity).
+//
+// Coq transcription and correctness proof:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L135>
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L205>
+//
+// This function includes a branch for checking whether the two input points
+// are equal, (while not equal to the point at infinity). This case never
+// happens during single point multiplication, so there is no timing leak for
+// ECDH or ECDSA signing.
+static void point_add(fe x3, fe y3, fe z3, const fe x1,
+                      const fe y1, const fe z1, const int mixed,
+                      const fe x2, const fe y2, const fe z2) {
+  fe x_out, y_out, z_out;
+  limb_t z1nz = fe_nz(z1);
+  limb_t z2nz = fe_nz(z2);
+
+  // z1z1 = z1z1 = z1**2
+  fe z1z1; fe_sqr(z1z1, z1);
+
+  fe u1, s1, two_z1z2;
+  if (!mixed) {
+    // z2z2 = z2**2
+    fe z2z2; fe_sqr(z2z2, z2);
+
+    // u1 = x1*z2z2
+    fe_mul(u1, x1, z2z2);
+
+    // two_z1z2 = (z1 + z2)**2 - (z1z1 + z2z2) = 2z1z2
+    fe_add(two_z1z2, z1, z2);
+    fe_sqr(two_z1z2, two_z1z2);
+    fe_sub(two_z1z2, two_z1z2, z1z1);
+    fe_sub(two_z1z2, two_z1z2, z2z2);
+
+    // s1 = y1 * z2**3
+    fe_mul(s1, z2, z2z2);
+    fe_mul(s1, s1, y1);
+  } else {
+    // We'll assume z2 = 1 (special case z2 = 0 is handled later).
+
+    // u1 = x1*z2z2
+    fe_copy(u1, x1);
+    // two_z1z2 = 2z1z2
+    fe_add(two_z1z2, z1, z1);
+    // s1 = y1 * z2**3
+    fe_copy(s1, y1);
+  }
+
+  // u2 = x2*z1z1
+  fe u2; fe_mul(u2, x2, z1z1);
+
+  // h = u2 - u1
+  fe h; fe_sub(h, u2, u1);
+
+  limb_t xneq = fe_nz(h);
+
+  // z_out = two_z1z2 * h
+  fe_mul(z_out, h, two_z1z2);
+
+  // z1z1z1 = z1 * z1z1
+  fe z1z1z1; fe_mul(z1z1z1, z1, z1z1);
+
+  // s2 = y2 * z1**3
+  fe s2; fe_mul(s2, y2, z1z1z1);
+
+  // r = (s2 - s1)*2
+  fe r;
+  fe_sub(r, s2, s1);
+  fe_add(r, r, r);
+
+  limb_t yneq = fe_nz(r);
+
+  limb_t is_nontrivial_double = constant_time_is_zero_w(xneq | yneq) &
+                                ~constant_time_is_zero_w(z1nz) &
+                                ~constant_time_is_zero_w(z2nz);
+  if (is_nontrivial_double) {
+    point_double(x3, y3, z3, x1, y1, z1);
+    return;
+  }
+
+  // I = (2h)**2
+  fe i;
+  fe_add(i, h, h);
+  fe_sqr(i, i);
+
+  // J = h * I
+  fe j; fe_mul(j, h, i);
+
+  // V = U1 * I
+  fe v; fe_mul(v, u1, i);
+
+  // x_out = r**2 - J - 2V
+  fe_sqr(x_out, r);
+  fe_sub(x_out, x_out, j);
+  fe_sub(x_out, x_out, v);
+  fe_sub(x_out, x_out, v);
+
+  // y_out = r(V-x_out) - 2 * s1 * J
+  fe_sub(y_out, v, x_out);
+  fe_mul(y_out, y_out, r);
+  fe s1j;
+  fe_mul(s1j, s1, j);
+  fe_sub(y_out, y_out, s1j);
+  fe_sub(y_out, y_out, s1j);
+
+  fe_cmovznz(x_out, z1nz, x2, x_out);
+  fe_cmovznz(x3, z2nz, x1, x_out);
+  fe_cmovznz(y_out, z1nz, y2, y_out);
+  fe_cmovznz(y3, z2nz, y1, y_out);
+  fe_cmovznz(z_out, z1nz, z2, z_out);
+  fe_cmovznz(z3, z2nz, z1, z_out);
+}
+
+// Base point pre computation
+// --------------------------
+//
+// Two different sorts of precomputed tables are used in the following code.
+// Each contain various points on the curve, where each point is three field
+// elements (x, y, z).
+//
+// For the base point table, z is usually 1 (0 for the point at infinity).
+// This table has 2 * 16 elements, starting with the following:
+// index | bits    | point
+// ------+---------+------------------------------
+//     0 | 0 0 0 0 | 0G
+//     1 | 0 0 0 1 | 1G
+//     2 | 0 0 1 0 | 2^64G
+//     3 | 0 0 1 1 | (2^64 + 1)G
+//     4 | 0 1 0 0 | 2^128G
+//     5 | 0 1 0 1 | (2^128 + 1)G
+//     6 | 0 1 1 0 | (2^128 + 2^64)G
+//     7 | 0 1 1 1 | (2^128 + 2^64 + 1)G
+//     8 | 1 0 0 0 | 2^192G
+//     9 | 1 0 0 1 | (2^192 + 1)G
+//    10 | 1 0 1 0 | (2^192 + 2^64)G
+//    11 | 1 0 1 1 | (2^192 + 2^64 + 1)G
+//    12 | 1 1 0 0 | (2^192 + 2^128)G
+//    13 | 1 1 0 1 | (2^192 + 2^128 + 1)G
+//    14 | 1 1 1 0 | (2^192 + 2^128 + 2^64)G
+//    15 | 1 1 1 1 | (2^192 + 2^128 + 2^64 + 1)G
+// followed by a copy of this with each element multiplied by 2^32.
+//
+// The reason for this is so that we can clock bits into four different
+// locations when doing simple scalar multiplies against the base point,
+// and then another four locations using the second 16 elements.
+//
+// Tables for other points have table[i] = iG for i in 0 .. 16.
+
+// g_pre_comp is the table of precomputed base points
+#if defined(BORINGSSL_NISTP256_64BIT)
+static const fe g_pre_comp[2][16][3] = {
+    {{{0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}},
+     {{0x79e730d418a9143c, 0x75ba95fc5fedb601, 0x79fb732b77622510,
+       0x18905f76a53755c6},
+      {0xddf25357ce95560a, 0x8b4ab8e4ba19e45c, 0xd2e88688dd21f325,
+       0x8571ff1825885d85},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x4f922fc516a0d2bb, 0xd5cc16c1a623499, 0x9241cf3a57c62c8b,
+       0x2f5e6961fd1b667f},
+      {0x5c15c70bf5a01797, 0x3d20b44d60956192, 0x4911b37071fdb52,
+       0xf648f9168d6f0f7b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x9e566847e137bbbc, 0xe434469e8a6a0bec, 0xb1c4276179d73463,
+       0x5abe0285133d0015},
+      {0x92aa837cc04c7dab, 0x573d9f4c43260c07, 0xc93156278e6cc37,
+       0x94bb725b6b6f7383},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x62a8c244bfe20925, 0x91c19ac38fdce867, 0x5a96a5d5dd387063,
+       0x61d587d421d324f6},
+      {0xe87673a2a37173ea, 0x2384800853778b65, 0x10f8441e05bab43e,
+       0xfa11fe124621efbe},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x1c891f2b2cb19ffd, 0x1ba8d5bb1923c23, 0xb6d03d678ac5ca8e,
+       0x586eb04c1f13bedc},
+      {0xc35c6e527e8ed09, 0x1e81a33c1819ede2, 0x278fd6c056c652fa,
+       0x19d5ac0870864f11},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x62577734d2b533d5, 0x673b8af6a1bdddc0, 0x577e7c9aa79ec293,
+       0xbb6de651c3b266b1},
+      {0xe7e9303ab65259b3, 0xd6a0afd3d03a7480, 0xc5ac83d19b3cfc27,
+       0x60b4619a5d18b99b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xbd6a38e11ae5aa1c, 0xb8b7652b49e73658, 0xb130014ee5f87ed,
+       0x9d0f27b2aeebffcd},
+      {0xca9246317a730a55, 0x9c955b2fddbbc83a, 0x7c1dfe0ac019a71,
+       0x244a566d356ec48d},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x56f8410ef4f8b16a, 0x97241afec47b266a, 0xa406b8e6d9c87c1,
+       0x803f3e02cd42ab1b},
+      {0x7f0309a804dbec69, 0xa83b85f73bbad05f, 0xc6097273ad8e197f,
+       0xc097440e5067adc1},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x846a56f2c379ab34, 0xa8ee068b841df8d1, 0x20314459176c68ef,
+       0xf1af32d5915f1f30},
+      {0x99c375315d75bd50, 0x837cffbaf72f67bc, 0x613a41848d7723f,
+       0x23d0f130e2d41c8b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xed93e225d5be5a2b, 0x6fe799835934f3c6, 0x4314092622626ffc,
+       0x50bbb4d97990216a},
+      {0x378191c6e57ec63e, 0x65422c40181dcdb2, 0x41a8099b0236e0f6,
+       0x2b10011801fe49c3},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xfc68b5c59b391593, 0xc385f5a2598270fc, 0x7144f3aad19adcbb,
+       0xdd55899983fbae0c},
+      {0x93b88b8e74b82ff4, 0xd2e03c4071e734c9, 0x9a7a9eaf43c0322a,
+       0xe6e4c551149d6041},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x5fe14bfe80ec21fe, 0xf6ce116ac255be82, 0x98bc5a072f4a5d67,
+       0xfad27148db7e63af},
+      {0x90c0b6ac29ab05b3, 0x37a9a83c4e251ae6, 0xa7dc875c2aade7d,
+       0x77387de39f0e1a84},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x1e9ecc49a56c0dd7, 0xa5cffcd846086c74, 0x8f7a1408f505aece,
+       0xb37b85c0bef0c47e},
+      {0x3596b6e4cc0e6a8f, 0xfd6d4bbf6b388f23, 0xaba453fac39cef4e,
+       0x9c135ac8f9f628d5},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xa1c729495c8f8be, 0x2961c4803bf362bf, 0x9e418403df63d4ac,
+       0xc109f9cb91ece900},
+      {0xc2d095d058945705, 0xb9083d96ddeb85c0, 0x84692b8d7a40449b,
+       0x9bc3344f2eee1ee1},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xd5ae35642913074, 0x55491b2748a542b1, 0x469ca665b310732a,
+       0x29591d525f1a4cc1},
+      {0xe76f5b6bb84f983f, 0xbe7eef419f5f84e1, 0x1200d49680baa189,
+       0x6376551f18ef332c},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}}},
+    {{{0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}},
+     {{0x202886024147519a, 0xd0981eac26b372f0, 0xa9d4a7caa785ebc8,
+       0xd953c50ddbdf58e9},
+      {0x9d6361ccfd590f8f, 0x72e9626b44e6c917, 0x7fd9611022eb64cf,
+       0x863ebb7e9eb288f3},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x4fe7ee31b0e63d34, 0xf4600572a9e54fab, 0xc0493334d5e7b5a4,
+       0x8589fb9206d54831},
+      {0xaa70f5cc6583553a, 0x879094ae25649e5, 0xcc90450710044652,
+       0xebb0696d02541c4f},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xabbaa0c03b89da99, 0xa6f2d79eb8284022, 0x27847862b81c05e8,
+       0x337a4b5905e54d63},
+      {0x3c67500d21f7794a, 0x207005b77d6d7f61, 0xa5a378104cfd6e8,
+       0xd65e0d5f4c2fbd6},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xd433e50f6d3549cf, 0x6f33696ffacd665e, 0x695bfdacce11fcb4,
+       0x810ee252af7c9860},
+      {0x65450fe17159bb2c, 0xf7dfbebe758b357b, 0x2b057e74d69fea72,
+       0xd485717a92731745},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xce1f69bbe83f7669, 0x9f8ae8272877d6b, 0x9548ae543244278d,
+       0x207755dee3c2c19c},
+      {0x87bd61d96fef1945, 0x18813cefb12d28c3, 0x9fbcd1d672df64aa,
+       0x48dc5ee57154b00d},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xef0f469ef49a3154, 0x3e85a5956e2b2e9a, 0x45aaec1eaa924a9c,
+       0xaa12dfc8a09e4719},
+      {0x26f272274df69f1d, 0xe0e4c82ca2ff5e73, 0xb9d8ce73b7a9dd44,
+       0x6c036e73e48ca901},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xe1e421e1a47153f0, 0xb86c3b79920418c9, 0x93bdce87705d7672,
+       0xf25ae793cab79a77},
+      {0x1f3194a36d869d0c, 0x9d55c8824986c264, 0x49fb5ea3096e945e,
+       0x39b8e65313db0a3e},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xe3417bc035d0b34a, 0x440b386b8327c0a7, 0x8fb7262dac0362d1,
+       0x2c41114ce0cdf943},
+      {0x2ba5cef1ad95a0b1, 0xc09b37a867d54362, 0x26d6cdd201e486c9,
+       0x20477abf42ff9297},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xf121b41bc0a67d2, 0x62d4760a444d248a, 0xe044f1d659b4737,
+       0x8fde365250bb4a8},
+      {0xaceec3da848bf287, 0xc2a62182d3369d6e, 0x3582dfdc92449482,
+       0x2f7e2fd2565d6cd7},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xa0122b5178a876b, 0x51ff96ff085104b4, 0x50b31ab14f29f76,
+       0x84abb28b5f87d4e6},
+      {0xd5ed439f8270790a, 0x2d6cb59d85e3f46b, 0x75f55c1b6c1e2212,
+       0xe5436f6717655640},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xc2965ecc9aeb596d, 0x1ea03e7023c92b4, 0x4704b4b62e013961,
+       0xca8fd3f905ea367},
+      {0x92523a42551b2b61, 0x1eb7a89c390fcd06, 0xe7f1d2be0392a63e,
+       0x96dca2644ddb0c33},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x231c210e15339848, 0xe87a28e870778c8d, 0x9d1de6616956e170,
+       0x4ac3c9382bb09c0b},
+      {0x19be05516998987d, 0x8b2376c4ae09f4d6, 0x1de0b7651a3f933d,
+       0x380d94c7e39705f4},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x3685954b8c31c31d, 0x68533d005bf21a0c, 0xbd7626e75c79ec9,
+       0xca17754742c69d54},
+      {0xcc6edafff6d2dbb2, 0xfd0d8cbd174a9d18, 0x875e8793aa4578e8,
+       0xa976a7139cab2ce6},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xce37ab11b43ea1db, 0xa7ff1a95259d292, 0x851b02218f84f186,
+       0xa7222beadefaad13},
+      {0xa2ac78ec2b0a9144, 0x5a024051f2fa59c5, 0x91d1eca56147ce38,
+       0xbe94d523bc2ac690},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x2d8daefd79ec1a0f, 0x3bbcd6fdceb39c97, 0xf5575ffc58f61a95,
+       0xdbd986c4adf7b420},
+      {0x81aa881415f39eb7, 0x6ee2fcf5b98d976c, 0x5465475dcf2f717d,
+       0x8e24d3c46860bbd0},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}}}};
+#else
+static const fe g_pre_comp[2][16][3] = {
+    {{{0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0}},
+     {{0x18a9143c,0x79e730d4, 0x5fedb601,0x75ba95fc, 0x77622510,0x79fb732b,
+       0xa53755c6,0x18905f76},
+      {0xce95560a,0xddf25357, 0xba19e45c,0x8b4ab8e4, 0xdd21f325,0xd2e88688,
+       0x25885d85,0x8571ff18},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x16a0d2bb,0x4f922fc5, 0x1a623499,0xd5cc16c, 0x57c62c8b,0x9241cf3a,
+       0xfd1b667f,0x2f5e6961},
+      {0xf5a01797,0x5c15c70b, 0x60956192,0x3d20b44d, 0x71fdb52,0x4911b37,
+       0x8d6f0f7b,0xf648f916},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xe137bbbc,0x9e566847, 0x8a6a0bec,0xe434469e, 0x79d73463,0xb1c42761,
+       0x133d0015,0x5abe0285},
+      {0xc04c7dab,0x92aa837c, 0x43260c07,0x573d9f4c, 0x78e6cc37,0xc931562,
+       0x6b6f7383,0x94bb725b},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xbfe20925,0x62a8c244, 0x8fdce867,0x91c19ac3, 0xdd387063,0x5a96a5d5,
+       0x21d324f6,0x61d587d4},
+      {0xa37173ea,0xe87673a2, 0x53778b65,0x23848008, 0x5bab43e,0x10f8441e,
+       0x4621efbe,0xfa11fe12},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x2cb19ffd,0x1c891f2b, 0xb1923c23,0x1ba8d5b, 0x8ac5ca8e,0xb6d03d67,
+       0x1f13bedc,0x586eb04c},
+      {0x27e8ed09,0xc35c6e5, 0x1819ede2,0x1e81a33c, 0x56c652fa,0x278fd6c0,
+       0x70864f11,0x19d5ac08},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xd2b533d5,0x62577734, 0xa1bdddc0,0x673b8af6, 0xa79ec293,0x577e7c9a,
+       0xc3b266b1,0xbb6de651},
+      {0xb65259b3,0xe7e9303a, 0xd03a7480,0xd6a0afd3, 0x9b3cfc27,0xc5ac83d1,
+       0x5d18b99b,0x60b4619a},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x1ae5aa1c,0xbd6a38e1, 0x49e73658,0xb8b7652b, 0xee5f87ed,0xb130014,
+       0xaeebffcd,0x9d0f27b2},
+      {0x7a730a55,0xca924631, 0xddbbc83a,0x9c955b2f, 0xac019a71,0x7c1dfe0,
+       0x356ec48d,0x244a566d},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xf4f8b16a,0x56f8410e, 0xc47b266a,0x97241afe, 0x6d9c87c1,0xa406b8e,
+       0xcd42ab1b,0x803f3e02},
+      {0x4dbec69,0x7f0309a8, 0x3bbad05f,0xa83b85f7, 0xad8e197f,0xc6097273,
+       0x5067adc1,0xc097440e},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xc379ab34,0x846a56f2, 0x841df8d1,0xa8ee068b, 0x176c68ef,0x20314459,
+       0x915f1f30,0xf1af32d5},
+      {0x5d75bd50,0x99c37531, 0xf72f67bc,0x837cffba, 0x48d7723f,0x613a418,
+       0xe2d41c8b,0x23d0f130},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xd5be5a2b,0xed93e225, 0x5934f3c6,0x6fe79983, 0x22626ffc,0x43140926,
+       0x7990216a,0x50bbb4d9},
+      {0xe57ec63e,0x378191c6, 0x181dcdb2,0x65422c40, 0x236e0f6,0x41a8099b,
+       0x1fe49c3,0x2b100118},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x9b391593,0xfc68b5c5, 0x598270fc,0xc385f5a2, 0xd19adcbb,0x7144f3aa,
+       0x83fbae0c,0xdd558999},
+      {0x74b82ff4,0x93b88b8e, 0x71e734c9,0xd2e03c40, 0x43c0322a,0x9a7a9eaf,
+       0x149d6041,0xe6e4c551},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x80ec21fe,0x5fe14bfe, 0xc255be82,0xf6ce116a, 0x2f4a5d67,0x98bc5a07,
+       0xdb7e63af,0xfad27148},
+      {0x29ab05b3,0x90c0b6ac, 0x4e251ae6,0x37a9a83c, 0xc2aade7d,0xa7dc875,
+       0x9f0e1a84,0x77387de3},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xa56c0dd7,0x1e9ecc49, 0x46086c74,0xa5cffcd8, 0xf505aece,0x8f7a1408,
+       0xbef0c47e,0xb37b85c0},
+      {0xcc0e6a8f,0x3596b6e4, 0x6b388f23,0xfd6d4bbf, 0xc39cef4e,0xaba453fa,
+       0xf9f628d5,0x9c135ac8},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x95c8f8be,0xa1c7294, 0x3bf362bf,0x2961c480, 0xdf63d4ac,0x9e418403,
+       0x91ece900,0xc109f9cb},
+      {0x58945705,0xc2d095d0, 0xddeb85c0,0xb9083d96, 0x7a40449b,0x84692b8d,
+       0x2eee1ee1,0x9bc3344f},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x42913074,0xd5ae356, 0x48a542b1,0x55491b27, 0xb310732a,0x469ca665,
+       0x5f1a4cc1,0x29591d52},
+      {0xb84f983f,0xe76f5b6b, 0x9f5f84e1,0xbe7eef41, 0x80baa189,0x1200d496,
+       0x18ef332c,0x6376551f},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}}},
+    {{{0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0}},
+     {{0x4147519a,0x20288602, 0x26b372f0,0xd0981eac, 0xa785ebc8,0xa9d4a7ca,
+       0xdbdf58e9,0xd953c50d},
+      {0xfd590f8f,0x9d6361cc, 0x44e6c917,0x72e9626b, 0x22eb64cf,0x7fd96110,
+       0x9eb288f3,0x863ebb7e},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xb0e63d34,0x4fe7ee31, 0xa9e54fab,0xf4600572, 0xd5e7b5a4,0xc0493334,
+       0x6d54831,0x8589fb92},
+      {0x6583553a,0xaa70f5cc, 0xe25649e5,0x879094a, 0x10044652,0xcc904507,
+       0x2541c4f,0xebb0696d},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x3b89da99,0xabbaa0c0, 0xb8284022,0xa6f2d79e, 0xb81c05e8,0x27847862,
+       0x5e54d63,0x337a4b59},
+      {0x21f7794a,0x3c67500d, 0x7d6d7f61,0x207005b7, 0x4cfd6e8,0xa5a3781,
+       0xf4c2fbd6,0xd65e0d5},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x6d3549cf,0xd433e50f, 0xfacd665e,0x6f33696f, 0xce11fcb4,0x695bfdac,
+       0xaf7c9860,0x810ee252},
+      {0x7159bb2c,0x65450fe1, 0x758b357b,0xf7dfbebe, 0xd69fea72,0x2b057e74,
+       0x92731745,0xd485717a},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xe83f7669,0xce1f69bb, 0x72877d6b,0x9f8ae82, 0x3244278d,0x9548ae54,
+       0xe3c2c19c,0x207755de},
+      {0x6fef1945,0x87bd61d9, 0xb12d28c3,0x18813cef, 0x72df64aa,0x9fbcd1d6,
+       0x7154b00d,0x48dc5ee5},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xf49a3154,0xef0f469e, 0x6e2b2e9a,0x3e85a595, 0xaa924a9c,0x45aaec1e,
+       0xa09e4719,0xaa12dfc8},
+      {0x4df69f1d,0x26f27227, 0xa2ff5e73,0xe0e4c82c, 0xb7a9dd44,0xb9d8ce73,
+       0xe48ca901,0x6c036e73},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xa47153f0,0xe1e421e1, 0x920418c9,0xb86c3b79, 0x705d7672,0x93bdce87,
+       0xcab79a77,0xf25ae793},
+      {0x6d869d0c,0x1f3194a3, 0x4986c264,0x9d55c882, 0x96e945e,0x49fb5ea3,
+       0x13db0a3e,0x39b8e653},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x35d0b34a,0xe3417bc0, 0x8327c0a7,0x440b386b, 0xac0362d1,0x8fb7262d,
+       0xe0cdf943,0x2c41114c},
+      {0xad95a0b1,0x2ba5cef1, 0x67d54362,0xc09b37a8, 0x1e486c9,0x26d6cdd2,
+       0x42ff9297,0x20477abf},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xbc0a67d2,0xf121b41, 0x444d248a,0x62d4760a, 0x659b4737,0xe044f1d,
+       0x250bb4a8,0x8fde365},
+      {0x848bf287,0xaceec3da, 0xd3369d6e,0xc2a62182, 0x92449482,0x3582dfdc,
+       0x565d6cd7,0x2f7e2fd2},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x178a876b,0xa0122b5, 0x85104b4,0x51ff96ff, 0x14f29f76,0x50b31ab,
+       0x5f87d4e6,0x84abb28b},
+      {0x8270790a,0xd5ed439f, 0x85e3f46b,0x2d6cb59d, 0x6c1e2212,0x75f55c1b,
+       0x17655640,0xe5436f67},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x9aeb596d,0xc2965ecc, 0x23c92b4,0x1ea03e7, 0x2e013961,0x4704b4b6,
+       0x905ea367,0xca8fd3f},
+      {0x551b2b61,0x92523a42, 0x390fcd06,0x1eb7a89c, 0x392a63e,0xe7f1d2be,
+       0x4ddb0c33,0x96dca264},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x15339848,0x231c210e, 0x70778c8d,0xe87a28e8, 0x6956e170,0x9d1de661,
+       0x2bb09c0b,0x4ac3c938},
+      {0x6998987d,0x19be0551, 0xae09f4d6,0x8b2376c4, 0x1a3f933d,0x1de0b765,
+       0xe39705f4,0x380d94c7},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x8c31c31d,0x3685954b, 0x5bf21a0c,0x68533d00, 0x75c79ec9,0xbd7626e,
+       0x42c69d54,0xca177547},
+      {0xf6d2dbb2,0xcc6edaff, 0x174a9d18,0xfd0d8cbd, 0xaa4578e8,0x875e8793,
+       0x9cab2ce6,0xa976a713},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xb43ea1db,0xce37ab11, 0x5259d292,0xa7ff1a9, 0x8f84f186,0x851b0221,
+       0xdefaad13,0xa7222bea},
+      {0x2b0a9144,0xa2ac78ec, 0xf2fa59c5,0x5a024051, 0x6147ce38,0x91d1eca5,
+       0xbc2ac690,0xbe94d523},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x79ec1a0f,0x2d8daefd, 0xceb39c97,0x3bbcd6fd, 0x58f61a95,0xf5575ffc,
+       0xadf7b420,0xdbd986c4},
+      {0x15f39eb7,0x81aa8814, 0xb98d976c,0x6ee2fcf5, 0xcf2f717d,0x5465475d,
+       0x6860bbd0,0x8e24d3c4},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}}}};
+#endif
+
+// select_point selects the |idx|th point from a precomputation table and
+// copies it to out.
+static void select_point(const limb_t idx, size_t size,
+                         const fe pre_comp[/*size*/][3],
+                         fe out[3]) {
+  OPENSSL_memset(out, 0, sizeof(fe) * 3);
+  for (size_t i = 0; i < size; i++) {
+    limb_t mismatch = i ^ idx;
+    fe_cmovznz(out[0], mismatch, pre_comp[i][0], out[0]);
+    fe_cmovznz(out[1], mismatch, pre_comp[i][1], out[1]);
+    fe_cmovznz(out[2], mismatch, pre_comp[i][2], out[2]);
+  }
+}
+
+// get_bit returns the |i|th bit in |in|
+static char get_bit(const uint8_t *in, int i) {
+  if (i < 0 || i >= 256) {
+    return 0;
+  }
+  return (in[i >> 3] >> (i & 7)) & 1;
+}
+
+// OPENSSL EC_METHOD FUNCTIONS
+
+// Takes the Jacobian coordinates (X, Y, Z) of a point and returns (X', Y') =
+// (X/Z^2, Y/Z^3).
+static int ec_GFp_nistp256_point_get_affine_coordinates(
+    const EC_GROUP *group, const EC_RAW_POINT *point, EC_FELEM *x_out,
+    EC_FELEM *y_out) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  fe z1, z2;
+  fe_from_generic(z1, &point->Z);
+  fe_inv(z2, z1);
+  fe_sqr(z1, z2);
+
+  // Instead of using |fe_from_montgomery| to convert the |x| coordinate and
+  // then calling |fe_from_montgomery| again to convert the |y| coordinate
+  // below, convert the common factor |z1| once now, saving one reduction.
+  fe_from_montgomery(z1);
+
+  if (x_out != NULL) {
+    fe x;
+    fe_from_generic(x, &point->X);
+    fe_mul(x, x, z1);
+    fe_to_generic(x_out, x);
+  }
+
+  if (y_out != NULL) {
+    fe y;
+    fe_from_generic(y, &point->Y);
+    fe_mul(z1, z1, z2);
+    fe_mul(y, y, z1);
+    fe_to_generic(y_out, y);
+  }
+
+  return 1;
+}
+
+static void ec_GFp_nistp256_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  fe x1, y1, z1, x2, y2, z2;
+  fe_from_generic(x1, &a->X);
+  fe_from_generic(y1, &a->Y);
+  fe_from_generic(z1, &a->Z);
+  fe_from_generic(x2, &b->X);
+  fe_from_generic(y2, &b->Y);
+  fe_from_generic(z2, &b->Z);
+  point_add(x1, y1, z1, x1, y1, z1, 0 /* both Jacobian */, x2, y2, z2);
+  fe_to_generic(&r->X, x1);
+  fe_to_generic(&r->Y, y1);
+  fe_to_generic(&r->Z, z1);
+}
+
+static void ec_GFp_nistp256_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a) {
+  fe x, y, z;
+  fe_from_generic(x, &a->X);
+  fe_from_generic(y, &a->Y);
+  fe_from_generic(z, &a->Z);
+  point_double(x, y, z, x, y, z);
+  fe_to_generic(&r->X, x);
+  fe_to_generic(&r->Y, y);
+  fe_to_generic(&r->Z, z);
+}
+
+static void ec_GFp_nistp256_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *scalar) {
+  fe p_pre_comp[17][3];
+  OPENSSL_memset(&p_pre_comp, 0, sizeof(p_pre_comp));
+  // Precompute multiples.
+  fe_from_generic(p_pre_comp[1][0], &p->X);
+  fe_from_generic(p_pre_comp[1][1], &p->Y);
+  fe_from_generic(p_pre_comp[1][2], &p->Z);
+  for (size_t j = 2; j <= 16; ++j) {
+    if (j & 1) {
+      point_add(p_pre_comp[j][0], p_pre_comp[j][1], p_pre_comp[j][2],
+                p_pre_comp[1][0], p_pre_comp[1][1], p_pre_comp[1][2], 0,
+                p_pre_comp[j - 1][0], p_pre_comp[j - 1][1],
+                p_pre_comp[j - 1][2]);
+    } else {
+      point_double(p_pre_comp[j][0], p_pre_comp[j][1], p_pre_comp[j][2],
+                   p_pre_comp[j / 2][0], p_pre_comp[j / 2][1],
+                   p_pre_comp[j / 2][2]);
+    }
+  }
+
+  // Set nq to the point at infinity.
+  fe nq[3] = {{0}, {0}, {0}}, ftmp, tmp[3];
+
+  // Loop over |scalar| msb-to-lsb, incorporating |p_pre_comp| every 5th round.
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 255; i < 256; i--) {
+    // double
+    if (!skip) {
+      point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // do other additions every 5 doublings
+    if (i % 5 == 0) {
+      uint64_t bits = get_bit(scalar->bytes, i + 4) << 5;
+      bits |= get_bit(scalar->bytes, i + 3) << 4;
+      bits |= get_bit(scalar->bytes, i + 2) << 3;
+      bits |= get_bit(scalar->bytes, i + 1) << 2;
+      bits |= get_bit(scalar->bytes, i) << 1;
+      bits |= get_bit(scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // select the point to add or subtract, in constant time.
+      select_point(digit, 17, (const fe(*)[3])p_pre_comp, tmp);
+      fe_opp(ftmp, tmp[1]);  // (X, -Y, Z) is the negative point.
+      fe_cmovznz(tmp[1], sign, tmp[1], ftmp);
+
+      if (!skip) {
+        point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                  tmp[0], tmp[1], tmp[2]);
+      } else {
+        fe_copy(nq[0], tmp[0]);
+        fe_copy(nq[1], tmp[1]);
+        fe_copy(nq[2], tmp[2]);
+        skip = 0;
+      }
+    }
+  }
+
+  fe_to_generic(&r->X, nq[0]);
+  fe_to_generic(&r->Y, nq[1]);
+  fe_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp256_point_mul_base(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *scalar) {
+  // Set nq to the point at infinity.
+  fe nq[3] = {{0}, {0}, {0}}, tmp[3];
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 31; i < 32; i--) {
+    if (!skip) {
+      point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // First, look 32 bits upwards.
+    uint64_t bits = get_bit(scalar->bytes, i + 224) << 3;
+    bits |= get_bit(scalar->bytes, i + 160) << 2;
+    bits |= get_bit(scalar->bytes, i + 96) << 1;
+    bits |= get_bit(scalar->bytes, i + 32);
+    // Select the point to add, in constant time.
+    select_point(bits, 16, g_pre_comp[1], tmp);
+
+    if (!skip) {
+      point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */, tmp[0],
+                tmp[1], tmp[2]);
+    } else {
+      fe_copy(nq[0], tmp[0]);
+      fe_copy(nq[1], tmp[1]);
+      fe_copy(nq[2], tmp[2]);
+      skip = 0;
+    }
+
+    // Second, look at the current position.
+    bits = get_bit(scalar->bytes, i + 192) << 3;
+    bits |= get_bit(scalar->bytes, i + 128) << 2;
+    bits |= get_bit(scalar->bytes, i + 64) << 1;
+    bits |= get_bit(scalar->bytes, i);
+    // Select the point to add, in constant time.
+    select_point(bits, 16, g_pre_comp[0], tmp);
+    point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */, tmp[0],
+              tmp[1], tmp[2]);
+  }
+
+  fe_to_generic(&r->X, nq[0]);
+  fe_to_generic(&r->Y, nq[1]);
+  fe_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp256_point_mul_public(const EC_GROUP *group,
+                                             EC_RAW_POINT *r,
+                                             const EC_SCALAR *g_scalar,
+                                             const EC_RAW_POINT *p,
+                                             const EC_SCALAR *p_scalar) {
+#define P256_WSIZE_PUBLIC 4
+  // Precompute multiples of |p|. p_pre_comp[i] is (2*i+1) * |p|.
+  fe p_pre_comp[1 << (P256_WSIZE_PUBLIC-1)][3];
+  fe_from_generic(p_pre_comp[0][0], &p->X);
+  fe_from_generic(p_pre_comp[0][1], &p->Y);
+  fe_from_generic(p_pre_comp[0][2], &p->Z);
+  fe p2[3];
+  point_double(p2[0], p2[1], p2[2], p_pre_comp[0][0], p_pre_comp[0][1],
+               p_pre_comp[0][2]);
+  for (size_t i = 1; i < OPENSSL_ARRAY_SIZE(p_pre_comp); i++) {
+    point_add(p_pre_comp[i][0], p_pre_comp[i][1], p_pre_comp[i][2],
+              p_pre_comp[i - 1][0], p_pre_comp[i - 1][1], p_pre_comp[i - 1][2],
+              0 /* not mixed */, p2[0], p2[1], p2[2]);
+  }
+
+  // Set up the coefficients for |p_scalar|.
+  int8_t p_wNAF[257];
+  ec_compute_wNAF(group, p_wNAF, p_scalar, 256, P256_WSIZE_PUBLIC);
+
+  // Set |ret| to the point at infinity.
+  int skip = 1;  // Save some point operations.
+  fe ret[3] = {{0},{0},{0}};
+  for (int i = 256; i >= 0; i--) {
+    if (!skip) {
+      point_double(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2]);
+    }
+
+    // For the |g_scalar|, we use the precomputed table without the
+    // constant-time lookup.
+    if (i <= 31) {
+      // First, look 32 bits upwards.
+      uint64_t bits = get_bit(g_scalar->bytes, i + 224) << 3;
+      bits |= get_bit(g_scalar->bytes, i + 160) << 2;
+      bits |= get_bit(g_scalar->bytes, i + 96) << 1;
+      bits |= get_bit(g_scalar->bytes, i + 32);
+      point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2], 1 /* mixed */,
+                g_pre_comp[1][bits][0], g_pre_comp[1][bits][1],
+                g_pre_comp[1][bits][2]);
+      skip = 0;
+
+      // Second, look at the current position.
+      bits = get_bit(g_scalar->bytes, i + 192) << 3;
+      bits |= get_bit(g_scalar->bytes, i + 128) << 2;
+      bits |= get_bit(g_scalar->bytes, i + 64) << 1;
+      bits |= get_bit(g_scalar->bytes, i);
+      point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2], 1 /* mixed */,
+                g_pre_comp[0][bits][0], g_pre_comp[0][bits][1],
+                g_pre_comp[0][bits][2]);
+    }
+
+    int digit = p_wNAF[i];
+    if (digit != 0) {
+      assert(digit & 1);
+      int idx = digit < 0 ? (-digit) >> 1 : digit >> 1;
+      fe *y = &p_pre_comp[idx][1], tmp;
+      if (digit < 0) {
+        fe_opp(tmp, p_pre_comp[idx][1]);
+        y = &tmp;
+      }
+      if (!skip) {
+        point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2],
+                  0 /* not mixed */, p_pre_comp[idx][0], *y, p_pre_comp[idx][2]);
+      } else {
+        fe_copy(ret[0], p_pre_comp[idx][0]);
+        fe_copy(ret[1], *y);
+        fe_copy(ret[2], p_pre_comp[idx][2]);
+        skip = 0;
+      }
+    }
+  }
+
+  fe_to_generic(&r->X, ret[0]);
+  fe_to_generic(&r->Y, ret[1]);
+  fe_to_generic(&r->Z, ret[2]);
+}
+
+static int ec_GFp_nistp256_cmp_x_coordinate(const EC_GROUP *group,
+                                            const EC_RAW_POINT *p,
+                                            const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  fe Z2_mont;
+  fe_from_generic(Z2_mont, &p->Z);
+  fe_mul(Z2_mont, Z2_mont, Z2_mont);
+
+  fe r_Z2;
+  fe_frombytes(r_Z2, r->bytes);  // r < order < p, so this is valid.
+  fe_mul(r_Z2, r_Z2, Z2_mont);
+
+  fe X;
+  fe_from_generic(X, &p->X);
+  fe_from_montgomery(X);
+
+  if (OPENSSL_memcmp(&r_Z2, &X, sizeof(r_Z2)) == 0) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  assert(group->field.width == group->order.width);
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         group->field.width)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    EC_FELEM tmp;
+    bn_add_words(tmp.words, r->words, group->order.d, group->order.width);
+    fe_from_generic(r_Z2, &tmp);
+    fe_mul(r_Z2, r_Z2, Z2_mont);
+    if (OPENSSL_memcmp(&r_Z2, &X, sizeof(r_Z2)) == 0) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistp256_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates =
+    ec_GFp_nistp256_point_get_affine_coordinates;
+  out->add = ec_GFp_nistp256_add;
+  out->dbl = ec_GFp_nistp256_dbl;
+  out->mul = ec_GFp_nistp256_point_mul;
+  out->mul_base = ec_GFp_nistp256_point_mul_base;
+  out->mul_public = ec_GFp_nistp256_point_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_nistp256_cmp_x_coordinate;
+}
+
+#undef BORINGSSL_NISTP256_64BIT
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c.grpc_back
new file mode 100644
index 0000000..23ec71f
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256.c.grpc_back	
@@ -0,0 +1,1063 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2015-2016 the fiat-crypto authors (see the AUTHORS file).
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// The field arithmetic code is generated by Fiat
+// (https://github.com/mit-plv/fiat-crypto), which is MIT licensed.
+//
+// An implementation of the NIST P-256 elliptic curve point multiplication.
+// 256-bit Montgomery form, generated using fiat-crypto, for 64 and 32-bit.
+// Field operations with inputs in [0,p) return outputs in [0,p).
+
+#include <openssl/base.h>
+
+#include <openssl/bn.h>
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/type_check.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "../../crypto/fipsmodule/delocate.h"
+#include "../../crypto/fipsmodule/ec/internal.h"
+#include "../../crypto/internal.h"
+
+
+// MSVC does not implement uint128_t, and crashes with intrinsics
+#if defined(BORINGSSL_HAS_UINT128)
+#define BORINGSSL_NISTP256_64BIT 1
+#include "p256_64.h"
+#else
+#include "p256_32.h"
+#endif
+
+
+// utility functions, handwritten
+
+#define NBYTES 32
+
+#if defined(BORINGSSL_NISTP256_64BIT)
+
+#define NLIMBS 4
+typedef uint64_t limb_t;
+typedef uint64_t fe[NLIMBS];
+#else // 64BIT; else 32BIT
+
+#define NLIMBS 8
+typedef uint32_t limb_t;
+typedef uint32_t fe[NLIMBS];
+
+#endif // 64BIT
+
+#define fe_add fiat_p256_add
+#define fe_sub fiat_p256_sub
+#define fe_opp fiat_p256_opp
+
+#define fe_mul fiat_p256_mul
+#define fe_sqr fiat_p256_square
+
+#define fe_tobytes fiat_p256_to_bytes
+#define fe_frombytes fiat_p256_from_bytes
+
+static limb_t fe_nz(const limb_t in1[NLIMBS]) {
+  limb_t ret;
+  fiat_p256_nonzero(&ret, in1);
+  return ret;
+}
+
+static void fe_copy(limb_t out[NLIMBS], const limb_t in1[NLIMBS]) {
+  for (int i = 0; i < NLIMBS; i++) {
+    out[i] = in1[i];
+  }
+}
+
+static void fe_cmovznz(limb_t out[NLIMBS], limb_t t, const limb_t z[NLIMBS],
+                       const limb_t nz[NLIMBS]) {
+  fiat_p256_selectznz(out, !!t, z, nz);
+}
+
+static void fe_from_montgomery(fe x) {
+  fiat_p256_from_montgomery(x, x);
+}
+
+static void fe_from_generic(fe out, const EC_FELEM *in) {
+  fe_frombytes(out, in->bytes);
+}
+
+static void fe_to_generic(EC_FELEM *out, const fe in) {
+  // This works because 256 is a multiple of 64, so there are no excess bytes to
+  // zero when rounding up to |BN_ULONG|s.
+  OPENSSL_STATIC_ASSERT(
+      256 / 8 == sizeof(BN_ULONG) * ((256 + BN_BITS2 - 1) / BN_BITS2),
+      "fe_tobytes leaves bytes uninitialized");
+  fe_tobytes(out->bytes, in);
+}
+
+// fe_inv calculates |out| = |in|^{-1}
+//
+// Based on Fermat's Little Theorem:
+//   a^p = a (mod p)
+//   a^{p-1} = 1 (mod p)
+//   a^{p-2} = a^{-1} (mod p)
+static void fe_inv(fe out, const fe in) {
+  fe ftmp, ftmp2;
+  // each e_I will hold |in|^{2^I - 1}
+  fe e2, e4, e8, e16, e32, e64;
+
+  fe_sqr(ftmp, in);  // 2^1
+  fe_mul(ftmp, in, ftmp);  // 2^2 - 2^0
+  fe_copy(e2, ftmp);
+  fe_sqr(ftmp, ftmp);  // 2^3 - 2^1
+  fe_sqr(ftmp, ftmp);  // 2^4 - 2^2
+  fe_mul(ftmp, ftmp, e2);  // 2^4 - 2^0
+  fe_copy(e4, ftmp);
+  fe_sqr(ftmp, ftmp);  // 2^5 - 2^1
+  fe_sqr(ftmp, ftmp);  // 2^6 - 2^2
+  fe_sqr(ftmp, ftmp);  // 2^7 - 2^3
+  fe_sqr(ftmp, ftmp);  // 2^8 - 2^4
+  fe_mul(ftmp, ftmp, e4);  // 2^8 - 2^0
+  fe_copy(e8, ftmp);
+  for (size_t i = 0; i < 8; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^16 - 2^8
+  fe_mul(ftmp, ftmp, e8);  // 2^16 - 2^0
+  fe_copy(e16, ftmp);
+  for (size_t i = 0; i < 16; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^32 - 2^16
+  fe_mul(ftmp, ftmp, e16);  // 2^32 - 2^0
+  fe_copy(e32, ftmp);
+  for (size_t i = 0; i < 32; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^64 - 2^32
+  fe_copy(e64, ftmp);
+  fe_mul(ftmp, ftmp, in);  // 2^64 - 2^32 + 2^0
+  for (size_t i = 0; i < 192; i++) {
+    fe_sqr(ftmp, ftmp);
+  }  // 2^256 - 2^224 + 2^192
+
+  fe_mul(ftmp2, e64, e32);  // 2^64 - 2^0
+  for (size_t i = 0; i < 16; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^80 - 2^16
+  fe_mul(ftmp2, ftmp2, e16);  // 2^80 - 2^0
+  for (size_t i = 0; i < 8; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^88 - 2^8
+  fe_mul(ftmp2, ftmp2, e8);  // 2^88 - 2^0
+  for (size_t i = 0; i < 4; i++) {
+    fe_sqr(ftmp2, ftmp2);
+  }  // 2^92 - 2^4
+  fe_mul(ftmp2, ftmp2, e4);  // 2^92 - 2^0
+  fe_sqr(ftmp2, ftmp2);  // 2^93 - 2^1
+  fe_sqr(ftmp2, ftmp2);  // 2^94 - 2^2
+  fe_mul(ftmp2, ftmp2, e2);  // 2^94 - 2^0
+  fe_sqr(ftmp2, ftmp2);  // 2^95 - 2^1
+  fe_sqr(ftmp2, ftmp2);  // 2^96 - 2^2
+  fe_mul(ftmp2, ftmp2, in);  // 2^96 - 3
+
+  fe_mul(out, ftmp2, ftmp);  // 2^256 - 2^224 + 2^192 + 2^96 - 3
+}
+
+// Group operations
+// ----------------
+//
+// Building on top of the field operations we have the operations on the
+// elliptic curve group itself. Points on the curve are represented in Jacobian
+// coordinates.
+//
+// Both operations were transcribed to Coq and proven to correspond to naive
+// implementations using Affine coordinates, for all suitable fields.  In the
+// Coq proofs, issues of constant-time execution and memory layout (aliasing)
+// conventions were not considered. Specification of affine coordinates:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Spec/WeierstrassCurve.v#L28>
+// As a sanity check, a proof that these points form a commutative group:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/AffineProofs.v#L33>
+
+// point_double calculates 2*(x_in, y_in, z_in)
+//
+// The method is taken from:
+//   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
+//
+// Coq transcription and correctness proof:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L93>
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L201>
+//
+// Outputs can equal corresponding inputs, i.e., x_out == x_in is allowed.
+// while x_out == y_in is not (maybe this works, but it's not tested).
+static void point_double(fe x_out, fe y_out, fe z_out,
+                         const fe x_in, const fe y_in, const fe z_in) {
+  fe delta, gamma, beta, ftmp, ftmp2, tmptmp, alpha, fourbeta;
+  // delta = z^2
+  fe_sqr(delta, z_in);
+  // gamma = y^2
+  fe_sqr(gamma, y_in);
+  // beta = x*gamma
+  fe_mul(beta, x_in, gamma);
+
+  // alpha = 3*(x-delta)*(x+delta)
+  fe_sub(ftmp, x_in, delta);
+  fe_add(ftmp2, x_in, delta);
+
+  fe_add(tmptmp, ftmp2, ftmp2);
+  fe_add(ftmp2, ftmp2, tmptmp);
+  fe_mul(alpha, ftmp, ftmp2);
+
+  // x' = alpha^2 - 8*beta
+  fe_sqr(x_out, alpha);
+  fe_add(fourbeta, beta, beta);
+  fe_add(fourbeta, fourbeta, fourbeta);
+  fe_add(tmptmp, fourbeta, fourbeta);
+  fe_sub(x_out, x_out, tmptmp);
+
+  // z' = (y + z)^2 - gamma - delta
+  fe_add(delta, gamma, delta);
+  fe_add(ftmp, y_in, z_in);
+  fe_sqr(z_out, ftmp);
+  fe_sub(z_out, z_out, delta);
+
+  // y' = alpha*(4*beta - x') - 8*gamma^2
+  fe_sub(y_out, fourbeta, x_out);
+  fe_add(gamma, gamma, gamma);
+  fe_sqr(gamma, gamma);
+  fe_mul(y_out, alpha, y_out);
+  fe_add(gamma, gamma, gamma);
+  fe_sub(y_out, y_out, gamma);
+}
+
+// point_add calcuates (x1, y1, z1) + (x2, y2, z2)
+//
+// The method is taken from:
+//   http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#addition-add-2007-bl,
+// adapted for mixed addition (z2 = 1, or z2 = 0 for the point at infinity).
+//
+// Coq transcription and correctness proof:
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L135>
+// <https://github.com/mit-plv/fiat-crypto/blob/79f8b5f39ed609339f0233098dee1a3c4e6b3080/src/Curves/Weierstrass/Jacobian.v#L205>
+//
+// This function includes a branch for checking whether the two input points
+// are equal, (while not equal to the point at infinity). This case never
+// happens during single point multiplication, so there is no timing leak for
+// ECDH or ECDSA signing.
+static void point_add(fe x3, fe y3, fe z3, const fe x1,
+                      const fe y1, const fe z1, const int mixed,
+                      const fe x2, const fe y2, const fe z2) {
+  fe x_out, y_out, z_out;
+  limb_t z1nz = fe_nz(z1);
+  limb_t z2nz = fe_nz(z2);
+
+  // z1z1 = z1z1 = z1**2
+  fe z1z1; fe_sqr(z1z1, z1);
+
+  fe u1, s1, two_z1z2;
+  if (!mixed) {
+    // z2z2 = z2**2
+    fe z2z2; fe_sqr(z2z2, z2);
+
+    // u1 = x1*z2z2
+    fe_mul(u1, x1, z2z2);
+
+    // two_z1z2 = (z1 + z2)**2 - (z1z1 + z2z2) = 2z1z2
+    fe_add(two_z1z2, z1, z2);
+    fe_sqr(two_z1z2, two_z1z2);
+    fe_sub(two_z1z2, two_z1z2, z1z1);
+    fe_sub(two_z1z2, two_z1z2, z2z2);
+
+    // s1 = y1 * z2**3
+    fe_mul(s1, z2, z2z2);
+    fe_mul(s1, s1, y1);
+  } else {
+    // We'll assume z2 = 1 (special case z2 = 0 is handled later).
+
+    // u1 = x1*z2z2
+    fe_copy(u1, x1);
+    // two_z1z2 = 2z1z2
+    fe_add(two_z1z2, z1, z1);
+    // s1 = y1 * z2**3
+    fe_copy(s1, y1);
+  }
+
+  // u2 = x2*z1z1
+  fe u2; fe_mul(u2, x2, z1z1);
+
+  // h = u2 - u1
+  fe h; fe_sub(h, u2, u1);
+
+  limb_t xneq = fe_nz(h);
+
+  // z_out = two_z1z2 * h
+  fe_mul(z_out, h, two_z1z2);
+
+  // z1z1z1 = z1 * z1z1
+  fe z1z1z1; fe_mul(z1z1z1, z1, z1z1);
+
+  // s2 = y2 * z1**3
+  fe s2; fe_mul(s2, y2, z1z1z1);
+
+  // r = (s2 - s1)*2
+  fe r;
+  fe_sub(r, s2, s1);
+  fe_add(r, r, r);
+
+  limb_t yneq = fe_nz(r);
+
+  limb_t is_nontrivial_double = constant_time_is_zero_w(xneq | yneq) &
+                                ~constant_time_is_zero_w(z1nz) &
+                                ~constant_time_is_zero_w(z2nz);
+  if (is_nontrivial_double) {
+    point_double(x3, y3, z3, x1, y1, z1);
+    return;
+  }
+
+  // I = (2h)**2
+  fe i;
+  fe_add(i, h, h);
+  fe_sqr(i, i);
+
+  // J = h * I
+  fe j; fe_mul(j, h, i);
+
+  // V = U1 * I
+  fe v; fe_mul(v, u1, i);
+
+  // x_out = r**2 - J - 2V
+  fe_sqr(x_out, r);
+  fe_sub(x_out, x_out, j);
+  fe_sub(x_out, x_out, v);
+  fe_sub(x_out, x_out, v);
+
+  // y_out = r(V-x_out) - 2 * s1 * J
+  fe_sub(y_out, v, x_out);
+  fe_mul(y_out, y_out, r);
+  fe s1j;
+  fe_mul(s1j, s1, j);
+  fe_sub(y_out, y_out, s1j);
+  fe_sub(y_out, y_out, s1j);
+
+  fe_cmovznz(x_out, z1nz, x2, x_out);
+  fe_cmovznz(x3, z2nz, x1, x_out);
+  fe_cmovznz(y_out, z1nz, y2, y_out);
+  fe_cmovznz(y3, z2nz, y1, y_out);
+  fe_cmovznz(z_out, z1nz, z2, z_out);
+  fe_cmovznz(z3, z2nz, z1, z_out);
+}
+
+// Base point pre computation
+// --------------------------
+//
+// Two different sorts of precomputed tables are used in the following code.
+// Each contain various points on the curve, where each point is three field
+// elements (x, y, z).
+//
+// For the base point table, z is usually 1 (0 for the point at infinity).
+// This table has 2 * 16 elements, starting with the following:
+// index | bits    | point
+// ------+---------+------------------------------
+//     0 | 0 0 0 0 | 0G
+//     1 | 0 0 0 1 | 1G
+//     2 | 0 0 1 0 | 2^64G
+//     3 | 0 0 1 1 | (2^64 + 1)G
+//     4 | 0 1 0 0 | 2^128G
+//     5 | 0 1 0 1 | (2^128 + 1)G
+//     6 | 0 1 1 0 | (2^128 + 2^64)G
+//     7 | 0 1 1 1 | (2^128 + 2^64 + 1)G
+//     8 | 1 0 0 0 | 2^192G
+//     9 | 1 0 0 1 | (2^192 + 1)G
+//    10 | 1 0 1 0 | (2^192 + 2^64)G
+//    11 | 1 0 1 1 | (2^192 + 2^64 + 1)G
+//    12 | 1 1 0 0 | (2^192 + 2^128)G
+//    13 | 1 1 0 1 | (2^192 + 2^128 + 1)G
+//    14 | 1 1 1 0 | (2^192 + 2^128 + 2^64)G
+//    15 | 1 1 1 1 | (2^192 + 2^128 + 2^64 + 1)G
+// followed by a copy of this with each element multiplied by 2^32.
+//
+// The reason for this is so that we can clock bits into four different
+// locations when doing simple scalar multiplies against the base point,
+// and then another four locations using the second 16 elements.
+//
+// Tables for other points have table[i] = iG for i in 0 .. 16.
+
+// g_pre_comp is the table of precomputed base points
+#if defined(BORINGSSL_NISTP256_64BIT)
+static const fe g_pre_comp[2][16][3] = {
+    {{{0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}},
+     {{0x79e730d418a9143c, 0x75ba95fc5fedb601, 0x79fb732b77622510,
+       0x18905f76a53755c6},
+      {0xddf25357ce95560a, 0x8b4ab8e4ba19e45c, 0xd2e88688dd21f325,
+       0x8571ff1825885d85},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x4f922fc516a0d2bb, 0xd5cc16c1a623499, 0x9241cf3a57c62c8b,
+       0x2f5e6961fd1b667f},
+      {0x5c15c70bf5a01797, 0x3d20b44d60956192, 0x4911b37071fdb52,
+       0xf648f9168d6f0f7b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x9e566847e137bbbc, 0xe434469e8a6a0bec, 0xb1c4276179d73463,
+       0x5abe0285133d0015},
+      {0x92aa837cc04c7dab, 0x573d9f4c43260c07, 0xc93156278e6cc37,
+       0x94bb725b6b6f7383},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x62a8c244bfe20925, 0x91c19ac38fdce867, 0x5a96a5d5dd387063,
+       0x61d587d421d324f6},
+      {0xe87673a2a37173ea, 0x2384800853778b65, 0x10f8441e05bab43e,
+       0xfa11fe124621efbe},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x1c891f2b2cb19ffd, 0x1ba8d5bb1923c23, 0xb6d03d678ac5ca8e,
+       0x586eb04c1f13bedc},
+      {0xc35c6e527e8ed09, 0x1e81a33c1819ede2, 0x278fd6c056c652fa,
+       0x19d5ac0870864f11},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x62577734d2b533d5, 0x673b8af6a1bdddc0, 0x577e7c9aa79ec293,
+       0xbb6de651c3b266b1},
+      {0xe7e9303ab65259b3, 0xd6a0afd3d03a7480, 0xc5ac83d19b3cfc27,
+       0x60b4619a5d18b99b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xbd6a38e11ae5aa1c, 0xb8b7652b49e73658, 0xb130014ee5f87ed,
+       0x9d0f27b2aeebffcd},
+      {0xca9246317a730a55, 0x9c955b2fddbbc83a, 0x7c1dfe0ac019a71,
+       0x244a566d356ec48d},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x56f8410ef4f8b16a, 0x97241afec47b266a, 0xa406b8e6d9c87c1,
+       0x803f3e02cd42ab1b},
+      {0x7f0309a804dbec69, 0xa83b85f73bbad05f, 0xc6097273ad8e197f,
+       0xc097440e5067adc1},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x846a56f2c379ab34, 0xa8ee068b841df8d1, 0x20314459176c68ef,
+       0xf1af32d5915f1f30},
+      {0x99c375315d75bd50, 0x837cffbaf72f67bc, 0x613a41848d7723f,
+       0x23d0f130e2d41c8b},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xed93e225d5be5a2b, 0x6fe799835934f3c6, 0x4314092622626ffc,
+       0x50bbb4d97990216a},
+      {0x378191c6e57ec63e, 0x65422c40181dcdb2, 0x41a8099b0236e0f6,
+       0x2b10011801fe49c3},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xfc68b5c59b391593, 0xc385f5a2598270fc, 0x7144f3aad19adcbb,
+       0xdd55899983fbae0c},
+      {0x93b88b8e74b82ff4, 0xd2e03c4071e734c9, 0x9a7a9eaf43c0322a,
+       0xe6e4c551149d6041},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x5fe14bfe80ec21fe, 0xf6ce116ac255be82, 0x98bc5a072f4a5d67,
+       0xfad27148db7e63af},
+      {0x90c0b6ac29ab05b3, 0x37a9a83c4e251ae6, 0xa7dc875c2aade7d,
+       0x77387de39f0e1a84},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x1e9ecc49a56c0dd7, 0xa5cffcd846086c74, 0x8f7a1408f505aece,
+       0xb37b85c0bef0c47e},
+      {0x3596b6e4cc0e6a8f, 0xfd6d4bbf6b388f23, 0xaba453fac39cef4e,
+       0x9c135ac8f9f628d5},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xa1c729495c8f8be, 0x2961c4803bf362bf, 0x9e418403df63d4ac,
+       0xc109f9cb91ece900},
+      {0xc2d095d058945705, 0xb9083d96ddeb85c0, 0x84692b8d7a40449b,
+       0x9bc3344f2eee1ee1},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xd5ae35642913074, 0x55491b2748a542b1, 0x469ca665b310732a,
+       0x29591d525f1a4cc1},
+      {0xe76f5b6bb84f983f, 0xbe7eef419f5f84e1, 0x1200d49680baa189,
+       0x6376551f18ef332c},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}}},
+    {{{0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}, {0x0, 0x0, 0x0, 0x0}},
+     {{0x202886024147519a, 0xd0981eac26b372f0, 0xa9d4a7caa785ebc8,
+       0xd953c50ddbdf58e9},
+      {0x9d6361ccfd590f8f, 0x72e9626b44e6c917, 0x7fd9611022eb64cf,
+       0x863ebb7e9eb288f3},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x4fe7ee31b0e63d34, 0xf4600572a9e54fab, 0xc0493334d5e7b5a4,
+       0x8589fb9206d54831},
+      {0xaa70f5cc6583553a, 0x879094ae25649e5, 0xcc90450710044652,
+       0xebb0696d02541c4f},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xabbaa0c03b89da99, 0xa6f2d79eb8284022, 0x27847862b81c05e8,
+       0x337a4b5905e54d63},
+      {0x3c67500d21f7794a, 0x207005b77d6d7f61, 0xa5a378104cfd6e8,
+       0xd65e0d5f4c2fbd6},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xd433e50f6d3549cf, 0x6f33696ffacd665e, 0x695bfdacce11fcb4,
+       0x810ee252af7c9860},
+      {0x65450fe17159bb2c, 0xf7dfbebe758b357b, 0x2b057e74d69fea72,
+       0xd485717a92731745},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xce1f69bbe83f7669, 0x9f8ae8272877d6b, 0x9548ae543244278d,
+       0x207755dee3c2c19c},
+      {0x87bd61d96fef1945, 0x18813cefb12d28c3, 0x9fbcd1d672df64aa,
+       0x48dc5ee57154b00d},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xef0f469ef49a3154, 0x3e85a5956e2b2e9a, 0x45aaec1eaa924a9c,
+       0xaa12dfc8a09e4719},
+      {0x26f272274df69f1d, 0xe0e4c82ca2ff5e73, 0xb9d8ce73b7a9dd44,
+       0x6c036e73e48ca901},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xe1e421e1a47153f0, 0xb86c3b79920418c9, 0x93bdce87705d7672,
+       0xf25ae793cab79a77},
+      {0x1f3194a36d869d0c, 0x9d55c8824986c264, 0x49fb5ea3096e945e,
+       0x39b8e65313db0a3e},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xe3417bc035d0b34a, 0x440b386b8327c0a7, 0x8fb7262dac0362d1,
+       0x2c41114ce0cdf943},
+      {0x2ba5cef1ad95a0b1, 0xc09b37a867d54362, 0x26d6cdd201e486c9,
+       0x20477abf42ff9297},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xf121b41bc0a67d2, 0x62d4760a444d248a, 0xe044f1d659b4737,
+       0x8fde365250bb4a8},
+      {0xaceec3da848bf287, 0xc2a62182d3369d6e, 0x3582dfdc92449482,
+       0x2f7e2fd2565d6cd7},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xa0122b5178a876b, 0x51ff96ff085104b4, 0x50b31ab14f29f76,
+       0x84abb28b5f87d4e6},
+      {0xd5ed439f8270790a, 0x2d6cb59d85e3f46b, 0x75f55c1b6c1e2212,
+       0xe5436f6717655640},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xc2965ecc9aeb596d, 0x1ea03e7023c92b4, 0x4704b4b62e013961,
+       0xca8fd3f905ea367},
+      {0x92523a42551b2b61, 0x1eb7a89c390fcd06, 0xe7f1d2be0392a63e,
+       0x96dca2644ddb0c33},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x231c210e15339848, 0xe87a28e870778c8d, 0x9d1de6616956e170,
+       0x4ac3c9382bb09c0b},
+      {0x19be05516998987d, 0x8b2376c4ae09f4d6, 0x1de0b7651a3f933d,
+       0x380d94c7e39705f4},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x3685954b8c31c31d, 0x68533d005bf21a0c, 0xbd7626e75c79ec9,
+       0xca17754742c69d54},
+      {0xcc6edafff6d2dbb2, 0xfd0d8cbd174a9d18, 0x875e8793aa4578e8,
+       0xa976a7139cab2ce6},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0xce37ab11b43ea1db, 0xa7ff1a95259d292, 0x851b02218f84f186,
+       0xa7222beadefaad13},
+      {0xa2ac78ec2b0a9144, 0x5a024051f2fa59c5, 0x91d1eca56147ce38,
+       0xbe94d523bc2ac690},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}},
+     {{0x2d8daefd79ec1a0f, 0x3bbcd6fdceb39c97, 0xf5575ffc58f61a95,
+       0xdbd986c4adf7b420},
+      {0x81aa881415f39eb7, 0x6ee2fcf5b98d976c, 0x5465475dcf2f717d,
+       0x8e24d3c46860bbd0},
+      {0x1, 0xffffffff00000000, 0xffffffffffffffff, 0xfffffffe}}}};
+#else
+static const fe g_pre_comp[2][16][3] = {
+    {{{0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0}},
+     {{0x18a9143c,0x79e730d4, 0x5fedb601,0x75ba95fc, 0x77622510,0x79fb732b,
+       0xa53755c6,0x18905f76},
+      {0xce95560a,0xddf25357, 0xba19e45c,0x8b4ab8e4, 0xdd21f325,0xd2e88688,
+       0x25885d85,0x8571ff18},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x16a0d2bb,0x4f922fc5, 0x1a623499,0xd5cc16c, 0x57c62c8b,0x9241cf3a,
+       0xfd1b667f,0x2f5e6961},
+      {0xf5a01797,0x5c15c70b, 0x60956192,0x3d20b44d, 0x71fdb52,0x4911b37,
+       0x8d6f0f7b,0xf648f916},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xe137bbbc,0x9e566847, 0x8a6a0bec,0xe434469e, 0x79d73463,0xb1c42761,
+       0x133d0015,0x5abe0285},
+      {0xc04c7dab,0x92aa837c, 0x43260c07,0x573d9f4c, 0x78e6cc37,0xc931562,
+       0x6b6f7383,0x94bb725b},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xbfe20925,0x62a8c244, 0x8fdce867,0x91c19ac3, 0xdd387063,0x5a96a5d5,
+       0x21d324f6,0x61d587d4},
+      {0xa37173ea,0xe87673a2, 0x53778b65,0x23848008, 0x5bab43e,0x10f8441e,
+       0x4621efbe,0xfa11fe12},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x2cb19ffd,0x1c891f2b, 0xb1923c23,0x1ba8d5b, 0x8ac5ca8e,0xb6d03d67,
+       0x1f13bedc,0x586eb04c},
+      {0x27e8ed09,0xc35c6e5, 0x1819ede2,0x1e81a33c, 0x56c652fa,0x278fd6c0,
+       0x70864f11,0x19d5ac08},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xd2b533d5,0x62577734, 0xa1bdddc0,0x673b8af6, 0xa79ec293,0x577e7c9a,
+       0xc3b266b1,0xbb6de651},
+      {0xb65259b3,0xe7e9303a, 0xd03a7480,0xd6a0afd3, 0x9b3cfc27,0xc5ac83d1,
+       0x5d18b99b,0x60b4619a},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x1ae5aa1c,0xbd6a38e1, 0x49e73658,0xb8b7652b, 0xee5f87ed,0xb130014,
+       0xaeebffcd,0x9d0f27b2},
+      {0x7a730a55,0xca924631, 0xddbbc83a,0x9c955b2f, 0xac019a71,0x7c1dfe0,
+       0x356ec48d,0x244a566d},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xf4f8b16a,0x56f8410e, 0xc47b266a,0x97241afe, 0x6d9c87c1,0xa406b8e,
+       0xcd42ab1b,0x803f3e02},
+      {0x4dbec69,0x7f0309a8, 0x3bbad05f,0xa83b85f7, 0xad8e197f,0xc6097273,
+       0x5067adc1,0xc097440e},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xc379ab34,0x846a56f2, 0x841df8d1,0xa8ee068b, 0x176c68ef,0x20314459,
+       0x915f1f30,0xf1af32d5},
+      {0x5d75bd50,0x99c37531, 0xf72f67bc,0x837cffba, 0x48d7723f,0x613a418,
+       0xe2d41c8b,0x23d0f130},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xd5be5a2b,0xed93e225, 0x5934f3c6,0x6fe79983, 0x22626ffc,0x43140926,
+       0x7990216a,0x50bbb4d9},
+      {0xe57ec63e,0x378191c6, 0x181dcdb2,0x65422c40, 0x236e0f6,0x41a8099b,
+       0x1fe49c3,0x2b100118},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x9b391593,0xfc68b5c5, 0x598270fc,0xc385f5a2, 0xd19adcbb,0x7144f3aa,
+       0x83fbae0c,0xdd558999},
+      {0x74b82ff4,0x93b88b8e, 0x71e734c9,0xd2e03c40, 0x43c0322a,0x9a7a9eaf,
+       0x149d6041,0xe6e4c551},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x80ec21fe,0x5fe14bfe, 0xc255be82,0xf6ce116a, 0x2f4a5d67,0x98bc5a07,
+       0xdb7e63af,0xfad27148},
+      {0x29ab05b3,0x90c0b6ac, 0x4e251ae6,0x37a9a83c, 0xc2aade7d,0xa7dc875,
+       0x9f0e1a84,0x77387de3},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xa56c0dd7,0x1e9ecc49, 0x46086c74,0xa5cffcd8, 0xf505aece,0x8f7a1408,
+       0xbef0c47e,0xb37b85c0},
+      {0xcc0e6a8f,0x3596b6e4, 0x6b388f23,0xfd6d4bbf, 0xc39cef4e,0xaba453fa,
+       0xf9f628d5,0x9c135ac8},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x95c8f8be,0xa1c7294, 0x3bf362bf,0x2961c480, 0xdf63d4ac,0x9e418403,
+       0x91ece900,0xc109f9cb},
+      {0x58945705,0xc2d095d0, 0xddeb85c0,0xb9083d96, 0x7a40449b,0x84692b8d,
+       0x2eee1ee1,0x9bc3344f},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x42913074,0xd5ae356, 0x48a542b1,0x55491b27, 0xb310732a,0x469ca665,
+       0x5f1a4cc1,0x29591d52},
+      {0xb84f983f,0xe76f5b6b, 0x9f5f84e1,0xbe7eef41, 0x80baa189,0x1200d496,
+       0x18ef332c,0x6376551f},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}}},
+    {{{0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0},
+      {0x0,0x0, 0x0,0x0, 0x0,0x0, 0x0,0x0}},
+     {{0x4147519a,0x20288602, 0x26b372f0,0xd0981eac, 0xa785ebc8,0xa9d4a7ca,
+       0xdbdf58e9,0xd953c50d},
+      {0xfd590f8f,0x9d6361cc, 0x44e6c917,0x72e9626b, 0x22eb64cf,0x7fd96110,
+       0x9eb288f3,0x863ebb7e},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xb0e63d34,0x4fe7ee31, 0xa9e54fab,0xf4600572, 0xd5e7b5a4,0xc0493334,
+       0x6d54831,0x8589fb92},
+      {0x6583553a,0xaa70f5cc, 0xe25649e5,0x879094a, 0x10044652,0xcc904507,
+       0x2541c4f,0xebb0696d},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x3b89da99,0xabbaa0c0, 0xb8284022,0xa6f2d79e, 0xb81c05e8,0x27847862,
+       0x5e54d63,0x337a4b59},
+      {0x21f7794a,0x3c67500d, 0x7d6d7f61,0x207005b7, 0x4cfd6e8,0xa5a3781,
+       0xf4c2fbd6,0xd65e0d5},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x6d3549cf,0xd433e50f, 0xfacd665e,0x6f33696f, 0xce11fcb4,0x695bfdac,
+       0xaf7c9860,0x810ee252},
+      {0x7159bb2c,0x65450fe1, 0x758b357b,0xf7dfbebe, 0xd69fea72,0x2b057e74,
+       0x92731745,0xd485717a},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xe83f7669,0xce1f69bb, 0x72877d6b,0x9f8ae82, 0x3244278d,0x9548ae54,
+       0xe3c2c19c,0x207755de},
+      {0x6fef1945,0x87bd61d9, 0xb12d28c3,0x18813cef, 0x72df64aa,0x9fbcd1d6,
+       0x7154b00d,0x48dc5ee5},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xf49a3154,0xef0f469e, 0x6e2b2e9a,0x3e85a595, 0xaa924a9c,0x45aaec1e,
+       0xa09e4719,0xaa12dfc8},
+      {0x4df69f1d,0x26f27227, 0xa2ff5e73,0xe0e4c82c, 0xb7a9dd44,0xb9d8ce73,
+       0xe48ca901,0x6c036e73},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xa47153f0,0xe1e421e1, 0x920418c9,0xb86c3b79, 0x705d7672,0x93bdce87,
+       0xcab79a77,0xf25ae793},
+      {0x6d869d0c,0x1f3194a3, 0x4986c264,0x9d55c882, 0x96e945e,0x49fb5ea3,
+       0x13db0a3e,0x39b8e653},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x35d0b34a,0xe3417bc0, 0x8327c0a7,0x440b386b, 0xac0362d1,0x8fb7262d,
+       0xe0cdf943,0x2c41114c},
+      {0xad95a0b1,0x2ba5cef1, 0x67d54362,0xc09b37a8, 0x1e486c9,0x26d6cdd2,
+       0x42ff9297,0x20477abf},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xbc0a67d2,0xf121b41, 0x444d248a,0x62d4760a, 0x659b4737,0xe044f1d,
+       0x250bb4a8,0x8fde365},
+      {0x848bf287,0xaceec3da, 0xd3369d6e,0xc2a62182, 0x92449482,0x3582dfdc,
+       0x565d6cd7,0x2f7e2fd2},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x178a876b,0xa0122b5, 0x85104b4,0x51ff96ff, 0x14f29f76,0x50b31ab,
+       0x5f87d4e6,0x84abb28b},
+      {0x8270790a,0xd5ed439f, 0x85e3f46b,0x2d6cb59d, 0x6c1e2212,0x75f55c1b,
+       0x17655640,0xe5436f67},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x9aeb596d,0xc2965ecc, 0x23c92b4,0x1ea03e7, 0x2e013961,0x4704b4b6,
+       0x905ea367,0xca8fd3f},
+      {0x551b2b61,0x92523a42, 0x390fcd06,0x1eb7a89c, 0x392a63e,0xe7f1d2be,
+       0x4ddb0c33,0x96dca264},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x15339848,0x231c210e, 0x70778c8d,0xe87a28e8, 0x6956e170,0x9d1de661,
+       0x2bb09c0b,0x4ac3c938},
+      {0x6998987d,0x19be0551, 0xae09f4d6,0x8b2376c4, 0x1a3f933d,0x1de0b765,
+       0xe39705f4,0x380d94c7},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x8c31c31d,0x3685954b, 0x5bf21a0c,0x68533d00, 0x75c79ec9,0xbd7626e,
+       0x42c69d54,0xca177547},
+      {0xf6d2dbb2,0xcc6edaff, 0x174a9d18,0xfd0d8cbd, 0xaa4578e8,0x875e8793,
+       0x9cab2ce6,0xa976a713},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0xb43ea1db,0xce37ab11, 0x5259d292,0xa7ff1a9, 0x8f84f186,0x851b0221,
+       0xdefaad13,0xa7222bea},
+      {0x2b0a9144,0xa2ac78ec, 0xf2fa59c5,0x5a024051, 0x6147ce38,0x91d1eca5,
+       0xbc2ac690,0xbe94d523},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}},
+     {{0x79ec1a0f,0x2d8daefd, 0xceb39c97,0x3bbcd6fd, 0x58f61a95,0xf5575ffc,
+       0xadf7b420,0xdbd986c4},
+      {0x15f39eb7,0x81aa8814, 0xb98d976c,0x6ee2fcf5, 0xcf2f717d,0x5465475d,
+       0x6860bbd0,0x8e24d3c4},
+      {0x1,0x0, 0x0,0xffffffff, 0xffffffff,0xffffffff, 0xfffffffe,0x0}}}};
+#endif
+
+// select_point selects the |idx|th point from a precomputation table and
+// copies it to out.
+static void select_point(const limb_t idx, size_t size,
+                         const fe pre_comp[/*size*/][3],
+                         fe out[3]) {
+  OPENSSL_memset(out, 0, sizeof(fe) * 3);
+  for (size_t i = 0; i < size; i++) {
+    limb_t mismatch = i ^ idx;
+    fe_cmovznz(out[0], mismatch, pre_comp[i][0], out[0]);
+    fe_cmovznz(out[1], mismatch, pre_comp[i][1], out[1]);
+    fe_cmovznz(out[2], mismatch, pre_comp[i][2], out[2]);
+  }
+}
+
+// get_bit returns the |i|th bit in |in|
+static char get_bit(const uint8_t *in, int i) {
+  if (i < 0 || i >= 256) {
+    return 0;
+  }
+  return (in[i >> 3] >> (i & 7)) & 1;
+}
+
+// OPENSSL EC_METHOD FUNCTIONS
+
+// Takes the Jacobian coordinates (X, Y, Z) of a point and returns (X', Y') =
+// (X/Z^2, Y/Z^3).
+static int ec_GFp_nistp256_point_get_affine_coordinates(
+    const EC_GROUP *group, const EC_RAW_POINT *point, EC_FELEM *x_out,
+    EC_FELEM *y_out) {
+  if (ec_GFp_simple_is_at_infinity(group, point)) {
+    OPENSSL_PUT_ERROR(EC, EC_R_POINT_AT_INFINITY);
+    return 0;
+  }
+
+  fe z1, z2;
+  fe_from_generic(z1, &point->Z);
+  fe_inv(z2, z1);
+  fe_sqr(z1, z2);
+
+  // Instead of using |fe_from_montgomery| to convert the |x| coordinate and
+  // then calling |fe_from_montgomery| again to convert the |y| coordinate
+  // below, convert the common factor |z1| once now, saving one reduction.
+  fe_from_montgomery(z1);
+
+  if (x_out != NULL) {
+    fe x;
+    fe_from_generic(x, &point->X);
+    fe_mul(x, x, z1);
+    fe_to_generic(x_out, x);
+  }
+
+  if (y_out != NULL) {
+    fe y;
+    fe_from_generic(y, &point->Y);
+    fe_mul(z1, z1, z2);
+    fe_mul(y, y, z1);
+    fe_to_generic(y_out, y);
+  }
+
+  return 1;
+}
+
+static void ec_GFp_nistp256_add(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a, const EC_RAW_POINT *b) {
+  fe x1, y1, z1, x2, y2, z2;
+  fe_from_generic(x1, &a->X);
+  fe_from_generic(y1, &a->Y);
+  fe_from_generic(z1, &a->Z);
+  fe_from_generic(x2, &b->X);
+  fe_from_generic(y2, &b->Y);
+  fe_from_generic(z2, &b->Z);
+  point_add(x1, y1, z1, x1, y1, z1, 0 /* both Jacobian */, x2, y2, z2);
+  fe_to_generic(&r->X, x1);
+  fe_to_generic(&r->Y, y1);
+  fe_to_generic(&r->Z, z1);
+}
+
+static void ec_GFp_nistp256_dbl(const EC_GROUP *group, EC_RAW_POINT *r,
+                                const EC_RAW_POINT *a) {
+  fe x, y, z;
+  fe_from_generic(x, &a->X);
+  fe_from_generic(y, &a->Y);
+  fe_from_generic(z, &a->Z);
+  point_double(x, y, z, x, y, z);
+  fe_to_generic(&r->X, x);
+  fe_to_generic(&r->Y, y);
+  fe_to_generic(&r->Z, z);
+}
+
+static void ec_GFp_nistp256_point_mul(const EC_GROUP *group, EC_RAW_POINT *r,
+                                      const EC_RAW_POINT *p,
+                                      const EC_SCALAR *scalar) {
+  fe p_pre_comp[17][3];
+  OPENSSL_memset(&p_pre_comp, 0, sizeof(p_pre_comp));
+  // Precompute multiples.
+  fe_from_generic(p_pre_comp[1][0], &p->X);
+  fe_from_generic(p_pre_comp[1][1], &p->Y);
+  fe_from_generic(p_pre_comp[1][2], &p->Z);
+  for (size_t j = 2; j <= 16; ++j) {
+    if (j & 1) {
+      point_add(p_pre_comp[j][0], p_pre_comp[j][1], p_pre_comp[j][2],
+                p_pre_comp[1][0], p_pre_comp[1][1], p_pre_comp[1][2], 0,
+                p_pre_comp[j - 1][0], p_pre_comp[j - 1][1],
+                p_pre_comp[j - 1][2]);
+    } else {
+      point_double(p_pre_comp[j][0], p_pre_comp[j][1], p_pre_comp[j][2],
+                   p_pre_comp[j / 2][0], p_pre_comp[j / 2][1],
+                   p_pre_comp[j / 2][2]);
+    }
+  }
+
+  // Set nq to the point at infinity.
+  fe nq[3] = {{0}, {0}, {0}}, ftmp, tmp[3];
+
+  // Loop over |scalar| msb-to-lsb, incorporating |p_pre_comp| every 5th round.
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 255; i < 256; i--) {
+    // double
+    if (!skip) {
+      point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // do other additions every 5 doublings
+    if (i % 5 == 0) {
+      uint64_t bits = get_bit(scalar->bytes, i + 4) << 5;
+      bits |= get_bit(scalar->bytes, i + 3) << 4;
+      bits |= get_bit(scalar->bytes, i + 2) << 3;
+      bits |= get_bit(scalar->bytes, i + 1) << 2;
+      bits |= get_bit(scalar->bytes, i) << 1;
+      bits |= get_bit(scalar->bytes, i - 1);
+      uint8_t sign, digit;
+      ec_GFp_nistp_recode_scalar_bits(&sign, &digit, bits);
+
+      // select the point to add or subtract, in constant time.
+      select_point(digit, 17, (const fe(*)[3])p_pre_comp, tmp);
+      fe_opp(ftmp, tmp[1]);  // (X, -Y, Z) is the negative point.
+      fe_cmovznz(tmp[1], sign, tmp[1], ftmp);
+
+      if (!skip) {
+        point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 0 /* mixed */,
+                  tmp[0], tmp[1], tmp[2]);
+      } else {
+        fe_copy(nq[0], tmp[0]);
+        fe_copy(nq[1], tmp[1]);
+        fe_copy(nq[2], tmp[2]);
+        skip = 0;
+      }
+    }
+  }
+
+  fe_to_generic(&r->X, nq[0]);
+  fe_to_generic(&r->Y, nq[1]);
+  fe_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp256_point_mul_base(const EC_GROUP *group,
+                                           EC_RAW_POINT *r,
+                                           const EC_SCALAR *scalar) {
+  // Set nq to the point at infinity.
+  fe nq[3] = {{0}, {0}, {0}}, tmp[3];
+
+  int skip = 1;  // Save two point operations in the first round.
+  for (size_t i = 31; i < 32; i--) {
+    if (!skip) {
+      point_double(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2]);
+    }
+
+    // First, look 32 bits upwards.
+    uint64_t bits = get_bit(scalar->bytes, i + 224) << 3;
+    bits |= get_bit(scalar->bytes, i + 160) << 2;
+    bits |= get_bit(scalar->bytes, i + 96) << 1;
+    bits |= get_bit(scalar->bytes, i + 32);
+    // Select the point to add, in constant time.
+    select_point(bits, 16, g_pre_comp[1], tmp);
+
+    if (!skip) {
+      point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */, tmp[0],
+                tmp[1], tmp[2]);
+    } else {
+      fe_copy(nq[0], tmp[0]);
+      fe_copy(nq[1], tmp[1]);
+      fe_copy(nq[2], tmp[2]);
+      skip = 0;
+    }
+
+    // Second, look at the current position.
+    bits = get_bit(scalar->bytes, i + 192) << 3;
+    bits |= get_bit(scalar->bytes, i + 128) << 2;
+    bits |= get_bit(scalar->bytes, i + 64) << 1;
+    bits |= get_bit(scalar->bytes, i);
+    // Select the point to add, in constant time.
+    select_point(bits, 16, g_pre_comp[0], tmp);
+    point_add(nq[0], nq[1], nq[2], nq[0], nq[1], nq[2], 1 /* mixed */, tmp[0],
+              tmp[1], tmp[2]);
+  }
+
+  fe_to_generic(&r->X, nq[0]);
+  fe_to_generic(&r->Y, nq[1]);
+  fe_to_generic(&r->Z, nq[2]);
+}
+
+static void ec_GFp_nistp256_point_mul_public(const EC_GROUP *group,
+                                             EC_RAW_POINT *r,
+                                             const EC_SCALAR *g_scalar,
+                                             const EC_RAW_POINT *p,
+                                             const EC_SCALAR *p_scalar) {
+#define P256_WSIZE_PUBLIC 4
+  // Precompute multiples of |p|. p_pre_comp[i] is (2*i+1) * |p|.
+  fe p_pre_comp[1 << (P256_WSIZE_PUBLIC-1)][3];
+  fe_from_generic(p_pre_comp[0][0], &p->X);
+  fe_from_generic(p_pre_comp[0][1], &p->Y);
+  fe_from_generic(p_pre_comp[0][2], &p->Z);
+  fe p2[3];
+  point_double(p2[0], p2[1], p2[2], p_pre_comp[0][0], p_pre_comp[0][1],
+               p_pre_comp[0][2]);
+  for (size_t i = 1; i < OPENSSL_ARRAY_SIZE(p_pre_comp); i++) {
+    point_add(p_pre_comp[i][0], p_pre_comp[i][1], p_pre_comp[i][2],
+              p_pre_comp[i - 1][0], p_pre_comp[i - 1][1], p_pre_comp[i - 1][2],
+              0 /* not mixed */, p2[0], p2[1], p2[2]);
+  }
+
+  // Set up the coefficients for |p_scalar|.
+  int8_t p_wNAF[257];
+  ec_compute_wNAF(group, p_wNAF, p_scalar, 256, P256_WSIZE_PUBLIC);
+
+  // Set |ret| to the point at infinity.
+  int skip = 1;  // Save some point operations.
+  fe ret[3] = {{0},{0},{0}};
+  for (int i = 256; i >= 0; i--) {
+    if (!skip) {
+      point_double(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2]);
+    }
+
+    // For the |g_scalar|, we use the precomputed table without the
+    // constant-time lookup.
+    if (i <= 31) {
+      // First, look 32 bits upwards.
+      uint64_t bits = get_bit(g_scalar->bytes, i + 224) << 3;
+      bits |= get_bit(g_scalar->bytes, i + 160) << 2;
+      bits |= get_bit(g_scalar->bytes, i + 96) << 1;
+      bits |= get_bit(g_scalar->bytes, i + 32);
+      point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2], 1 /* mixed */,
+                g_pre_comp[1][bits][0], g_pre_comp[1][bits][1],
+                g_pre_comp[1][bits][2]);
+      skip = 0;
+
+      // Second, look at the current position.
+      bits = get_bit(g_scalar->bytes, i + 192) << 3;
+      bits |= get_bit(g_scalar->bytes, i + 128) << 2;
+      bits |= get_bit(g_scalar->bytes, i + 64) << 1;
+      bits |= get_bit(g_scalar->bytes, i);
+      point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2], 1 /* mixed */,
+                g_pre_comp[0][bits][0], g_pre_comp[0][bits][1],
+                g_pre_comp[0][bits][2]);
+    }
+
+    int digit = p_wNAF[i];
+    if (digit != 0) {
+      assert(digit & 1);
+      int idx = digit < 0 ? (-digit) >> 1 : digit >> 1;
+      fe *y = &p_pre_comp[idx][1], tmp;
+      if (digit < 0) {
+        fe_opp(tmp, p_pre_comp[idx][1]);
+        y = &tmp;
+      }
+      if (!skip) {
+        point_add(ret[0], ret[1], ret[2], ret[0], ret[1], ret[2],
+                  0 /* not mixed */, p_pre_comp[idx][0], *y, p_pre_comp[idx][2]);
+      } else {
+        fe_copy(ret[0], p_pre_comp[idx][0]);
+        fe_copy(ret[1], *y);
+        fe_copy(ret[2], p_pre_comp[idx][2]);
+        skip = 0;
+      }
+    }
+  }
+
+  fe_to_generic(&r->X, ret[0]);
+  fe_to_generic(&r->Y, ret[1]);
+  fe_to_generic(&r->Z, ret[2]);
+}
+
+static int ec_GFp_nistp256_cmp_x_coordinate(const EC_GROUP *group,
+                                            const EC_RAW_POINT *p,
+                                            const EC_SCALAR *r) {
+  if (ec_GFp_simple_is_at_infinity(group, p)) {
+    return 0;
+  }
+
+  // We wish to compare X/Z^2 with r. This is equivalent to comparing X with
+  // r*Z^2. Note that X and Z are represented in Montgomery form, while r is
+  // not.
+  fe Z2_mont;
+  fe_from_generic(Z2_mont, &p->Z);
+  fe_mul(Z2_mont, Z2_mont, Z2_mont);
+
+  fe r_Z2;
+  fe_frombytes(r_Z2, r->bytes);  // r < order < p, so this is valid.
+  fe_mul(r_Z2, r_Z2, Z2_mont);
+
+  fe X;
+  fe_from_generic(X, &p->X);
+  fe_from_montgomery(X);
+
+  if (OPENSSL_memcmp(&r_Z2, &X, sizeof(r_Z2)) == 0) {
+    return 1;
+  }
+
+  // During signing the x coefficient is reduced modulo the group order.
+  // Therefore there is a small possibility, less than 1/2^128, that group_order
+  // < p.x < P. in that case we need not only to compare against |r| but also to
+  // compare against r+group_order.
+  assert(group->field.width == group->order.width);
+  if (bn_less_than_words(r->words, group->field_minus_order.words,
+                         group->field.width)) {
+    // We can ignore the carry because: r + group_order < p < 2^256.
+    EC_FELEM tmp;
+    bn_add_words(tmp.words, r->words, group->order.d, group->order.width);
+    fe_from_generic(r_Z2, &tmp);
+    fe_mul(r_Z2, r_Z2, Z2_mont);
+    if (OPENSSL_memcmp(&r_Z2, &X, sizeof(r_Z2)) == 0) {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+DEFINE_METHOD_FUNCTION(EC_METHOD, EC_GFp_nistp256_method) {
+  out->group_init = ec_GFp_mont_group_init;
+  out->group_finish = ec_GFp_mont_group_finish;
+  out->group_set_curve = ec_GFp_mont_group_set_curve;
+  out->point_get_affine_coordinates =
+    ec_GFp_nistp256_point_get_affine_coordinates;
+  out->add = ec_GFp_nistp256_add;
+  out->dbl = ec_GFp_nistp256_dbl;
+  out->mul = ec_GFp_nistp256_point_mul;
+  out->mul_base = ec_GFp_nistp256_point_mul_base;
+  out->mul_public = ec_GFp_nistp256_point_mul_public;
+  out->felem_mul = ec_GFp_mont_felem_mul;
+  out->felem_sqr = ec_GFp_mont_felem_sqr;
+  out->bignum_to_felem = ec_GFp_mont_bignum_to_felem;
+  out->felem_to_bignum = ec_GFp_mont_felem_to_bignum;
+  out->scalar_inv_montgomery = ec_simple_scalar_inv_montgomery;
+  out->scalar_inv_montgomery_vartime = ec_GFp_simple_mont_inv_mod_ord_vartime;
+  out->cmp_x_coordinate = ec_GFp_nistp256_cmp_x_coordinate;
+}
+
+#undef BORINGSSL_NISTP256_64BIT
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h
new file mode 100644
index 0000000..638eb5d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h	
@@ -0,0 +1,3226 @@
+/* Autogenerated */
+/* curve description: p256 */
+/* requested operations: (all) */
+/* m = 0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff (from "2^256 - 2^224 + 2^192 + 2^96 - 1") */
+/* machine_wordsize = 32 (from "32") */
+/*                                                                    */
+/* NOTE: In addition to the bounds specified above each function, all */
+/*   functions synthesized for this Montgomery arithmetic require the */
+/*   input to be strictly less than the prime modulus (m), and also   */
+/*   require the input to be in the unique saturated representation.  */
+/*   All functions also ensure that these two properties are true of  */
+/*   return values.                                                   */
+
+#include <stdint.h>
+typedef unsigned char fiat_p256_uint1;
+typedef signed char fiat_p256_int1;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_addcarryx_u32(uint32_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint64_t x1 = ((arg1 + (uint64_t)arg2) + arg3);
+  uint32_t x2 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  fiat_p256_uint1 x3 = (fiat_p256_uint1)(x1 >> 32);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_subborrowx_u32(uint32_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int64_t x1 = ((arg2 - (int64_t)arg1) - arg3);
+  fiat_p256_int1 x2 = (fiat_p256_int1)(x1 >> 32);
+  uint32_t x3 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  *out1 = x3;
+  *out2 = (fiat_p256_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0xffffffff]
+ *   arg2: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_mulx_u32(uint32_t* out1, uint32_t* out2, uint32_t arg1, uint32_t arg2) {
+  uint64_t x1 = ((uint64_t)arg1 * arg2);
+  uint32_t x2 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  uint32_t x3 = (uint32_t)(x1 >> 32);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_cmovznz_u32(uint32_t* out1, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  fiat_p256_uint1 x1 = (!(!arg1));
+  uint32_t x2 = ((fiat_p256_int1)(0x0 - x1) & UINT32_C(0xffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint32_t x3 = ((value_barrier_u32(x2) & arg3) | (value_barrier_u32(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_mul(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1 = (arg1[1]);
+  uint32_t x2 = (arg1[2]);
+  uint32_t x3 = (arg1[3]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[5]);
+  uint32_t x6 = (arg1[6]);
+  uint32_t x7 = (arg1[7]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9;
+  uint32_t x10;
+  fiat_p256_mulx_u32(&x9, &x10, x8, (arg2[7]));
+  uint32_t x11;
+  uint32_t x12;
+  fiat_p256_mulx_u32(&x11, &x12, x8, (arg2[6]));
+  uint32_t x13;
+  uint32_t x14;
+  fiat_p256_mulx_u32(&x13, &x14, x8, (arg2[5]));
+  uint32_t x15;
+  uint32_t x16;
+  fiat_p256_mulx_u32(&x15, &x16, x8, (arg2[4]));
+  uint32_t x17;
+  uint32_t x18;
+  fiat_p256_mulx_u32(&x17, &x18, x8, (arg2[3]));
+  uint32_t x19;
+  uint32_t x20;
+  fiat_p256_mulx_u32(&x19, &x20, x8, (arg2[2]));
+  uint32_t x21;
+  uint32_t x22;
+  fiat_p256_mulx_u32(&x21, &x22, x8, (arg2[1]));
+  uint32_t x23;
+  uint32_t x24;
+  fiat_p256_mulx_u32(&x23, &x24, x8, (arg2[0]));
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_addcarryx_u32(&x25, &x26, 0x0, x21, x24);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u32(&x27, &x28, x26, x19, x22);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u32(&x29, &x30, x28, x17, x20);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u32(&x31, &x32, x30, x15, x18);
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u32(&x33, &x34, x32, x13, x16);
+  uint32_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u32(&x35, &x36, x34, x11, x14);
+  uint32_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u32(&x37, &x38, x36, x9, x12);
+  uint32_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u32(&x39, &x40, x38, 0x0, x10);
+  uint32_t x41;
+  uint32_t x42;
+  fiat_p256_mulx_u32(&x41, &x42, x23, UINT32_C(0xffffffff));
+  uint32_t x43;
+  uint32_t x44;
+  fiat_p256_mulx_u32(&x43, &x44, x23, UINT32_C(0xffffffff));
+  uint32_t x45;
+  uint32_t x46;
+  fiat_p256_mulx_u32(&x45, &x46, x23, UINT32_C(0xffffffff));
+  uint32_t x47;
+  uint32_t x48;
+  fiat_p256_mulx_u32(&x47, &x48, x23, UINT32_C(0xffffffff));
+  uint32_t x49;
+  fiat_p256_uint1 x50;
+  fiat_p256_addcarryx_u32(&x49, &x50, 0x0, x45, x48);
+  uint32_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u32(&x51, &x52, x50, x43, x46);
+  uint32_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u32(&x53, &x54, x52, 0x0, x44);
+  uint32_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u32(&x55, &x56, 0x0, x47, x23);
+  uint32_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u32(&x57, &x58, x56, x49, x25);
+  uint32_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u32(&x59, &x60, x58, x51, x27);
+  uint32_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u32(&x61, &x62, x60, x53, x29);
+  uint32_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u32(&x63, &x64, x62, 0x0, x31);
+  uint32_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u32(&x65, &x66, x64, 0x0, x33);
+  uint32_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u32(&x67, &x68, x66, x23, x35);
+  uint32_t x69;
+  fiat_p256_uint1 x70;
+  fiat_p256_addcarryx_u32(&x69, &x70, x68, x41, x37);
+  uint32_t x71;
+  fiat_p256_uint1 x72;
+  fiat_p256_addcarryx_u32(&x71, &x72, x70, x42, x39);
+  uint32_t x73;
+  fiat_p256_uint1 x74;
+  fiat_p256_addcarryx_u32(&x73, &x74, x72, 0x0, 0x0);
+  uint32_t x75;
+  uint32_t x76;
+  fiat_p256_mulx_u32(&x75, &x76, x1, (arg2[7]));
+  uint32_t x77;
+  uint32_t x78;
+  fiat_p256_mulx_u32(&x77, &x78, x1, (arg2[6]));
+  uint32_t x79;
+  uint32_t x80;
+  fiat_p256_mulx_u32(&x79, &x80, x1, (arg2[5]));
+  uint32_t x81;
+  uint32_t x82;
+  fiat_p256_mulx_u32(&x81, &x82, x1, (arg2[4]));
+  uint32_t x83;
+  uint32_t x84;
+  fiat_p256_mulx_u32(&x83, &x84, x1, (arg2[3]));
+  uint32_t x85;
+  uint32_t x86;
+  fiat_p256_mulx_u32(&x85, &x86, x1, (arg2[2]));
+  uint32_t x87;
+  uint32_t x88;
+  fiat_p256_mulx_u32(&x87, &x88, x1, (arg2[1]));
+  uint32_t x89;
+  uint32_t x90;
+  fiat_p256_mulx_u32(&x89, &x90, x1, (arg2[0]));
+  uint32_t x91;
+  fiat_p256_uint1 x92;
+  fiat_p256_addcarryx_u32(&x91, &x92, 0x0, x87, x90);
+  uint32_t x93;
+  fiat_p256_uint1 x94;
+  fiat_p256_addcarryx_u32(&x93, &x94, x92, x85, x88);
+  uint32_t x95;
+  fiat_p256_uint1 x96;
+  fiat_p256_addcarryx_u32(&x95, &x96, x94, x83, x86);
+  uint32_t x97;
+  fiat_p256_uint1 x98;
+  fiat_p256_addcarryx_u32(&x97, &x98, x96, x81, x84);
+  uint32_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u32(&x99, &x100, x98, x79, x82);
+  uint32_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u32(&x101, &x102, x100, x77, x80);
+  uint32_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u32(&x103, &x104, x102, x75, x78);
+  uint32_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u32(&x105, &x106, x104, 0x0, x76);
+  uint32_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u32(&x107, &x108, 0x0, x89, x57);
+  uint32_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u32(&x109, &x110, x108, x91, x59);
+  uint32_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u32(&x111, &x112, x110, x93, x61);
+  uint32_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u32(&x113, &x114, x112, x95, x63);
+  uint32_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u32(&x115, &x116, x114, x97, x65);
+  uint32_t x117;
+  fiat_p256_uint1 x118;
+  fiat_p256_addcarryx_u32(&x117, &x118, x116, x99, x67);
+  uint32_t x119;
+  fiat_p256_uint1 x120;
+  fiat_p256_addcarryx_u32(&x119, &x120, x118, x101, x69);
+  uint32_t x121;
+  fiat_p256_uint1 x122;
+  fiat_p256_addcarryx_u32(&x121, &x122, x120, x103, x71);
+  uint32_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u32(&x123, &x124, x122, x105, (fiat_p256_uint1)x73);
+  uint32_t x125;
+  uint32_t x126;
+  fiat_p256_mulx_u32(&x125, &x126, x107, UINT32_C(0xffffffff));
+  uint32_t x127;
+  uint32_t x128;
+  fiat_p256_mulx_u32(&x127, &x128, x107, UINT32_C(0xffffffff));
+  uint32_t x129;
+  uint32_t x130;
+  fiat_p256_mulx_u32(&x129, &x130, x107, UINT32_C(0xffffffff));
+  uint32_t x131;
+  uint32_t x132;
+  fiat_p256_mulx_u32(&x131, &x132, x107, UINT32_C(0xffffffff));
+  uint32_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u32(&x133, &x134, 0x0, x129, x132);
+  uint32_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u32(&x135, &x136, x134, x127, x130);
+  uint32_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u32(&x137, &x138, x136, 0x0, x128);
+  uint32_t x139;
+  fiat_p256_uint1 x140;
+  fiat_p256_addcarryx_u32(&x139, &x140, 0x0, x131, x107);
+  uint32_t x141;
+  fiat_p256_uint1 x142;
+  fiat_p256_addcarryx_u32(&x141, &x142, x140, x133, x109);
+  uint32_t x143;
+  fiat_p256_uint1 x144;
+  fiat_p256_addcarryx_u32(&x143, &x144, x142, x135, x111);
+  uint32_t x145;
+  fiat_p256_uint1 x146;
+  fiat_p256_addcarryx_u32(&x145, &x146, x144, x137, x113);
+  uint32_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u32(&x147, &x148, x146, 0x0, x115);
+  uint32_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u32(&x149, &x150, x148, 0x0, x117);
+  uint32_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u32(&x151, &x152, x150, x107, x119);
+  uint32_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u32(&x153, &x154, x152, x125, x121);
+  uint32_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u32(&x155, &x156, x154, x126, x123);
+  uint32_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u32(&x157, &x158, x156, 0x0, x124);
+  uint32_t x159;
+  uint32_t x160;
+  fiat_p256_mulx_u32(&x159, &x160, x2, (arg2[7]));
+  uint32_t x161;
+  uint32_t x162;
+  fiat_p256_mulx_u32(&x161, &x162, x2, (arg2[6]));
+  uint32_t x163;
+  uint32_t x164;
+  fiat_p256_mulx_u32(&x163, &x164, x2, (arg2[5]));
+  uint32_t x165;
+  uint32_t x166;
+  fiat_p256_mulx_u32(&x165, &x166, x2, (arg2[4]));
+  uint32_t x167;
+  uint32_t x168;
+  fiat_p256_mulx_u32(&x167, &x168, x2, (arg2[3]));
+  uint32_t x169;
+  uint32_t x170;
+  fiat_p256_mulx_u32(&x169, &x170, x2, (arg2[2]));
+  uint32_t x171;
+  uint32_t x172;
+  fiat_p256_mulx_u32(&x171, &x172, x2, (arg2[1]));
+  uint32_t x173;
+  uint32_t x174;
+  fiat_p256_mulx_u32(&x173, &x174, x2, (arg2[0]));
+  uint32_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u32(&x175, &x176, 0x0, x171, x174);
+  uint32_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u32(&x177, &x178, x176, x169, x172);
+  uint32_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u32(&x179, &x180, x178, x167, x170);
+  uint32_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u32(&x181, &x182, x180, x165, x168);
+  uint32_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u32(&x183, &x184, x182, x163, x166);
+  uint32_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u32(&x185, &x186, x184, x161, x164);
+  uint32_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_addcarryx_u32(&x187, &x188, x186, x159, x162);
+  uint32_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_addcarryx_u32(&x189, &x190, x188, 0x0, x160);
+  uint32_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_addcarryx_u32(&x191, &x192, 0x0, x173, x141);
+  uint32_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_addcarryx_u32(&x193, &x194, x192, x175, x143);
+  uint32_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_addcarryx_u32(&x195, &x196, x194, x177, x145);
+  uint32_t x197;
+  fiat_p256_uint1 x198;
+  fiat_p256_addcarryx_u32(&x197, &x198, x196, x179, x147);
+  uint32_t x199;
+  fiat_p256_uint1 x200;
+  fiat_p256_addcarryx_u32(&x199, &x200, x198, x181, x149);
+  uint32_t x201;
+  fiat_p256_uint1 x202;
+  fiat_p256_addcarryx_u32(&x201, &x202, x200, x183, x151);
+  uint32_t x203;
+  fiat_p256_uint1 x204;
+  fiat_p256_addcarryx_u32(&x203, &x204, x202, x185, x153);
+  uint32_t x205;
+  fiat_p256_uint1 x206;
+  fiat_p256_addcarryx_u32(&x205, &x206, x204, x187, x155);
+  uint32_t x207;
+  fiat_p256_uint1 x208;
+  fiat_p256_addcarryx_u32(&x207, &x208, x206, x189, x157);
+  uint32_t x209;
+  uint32_t x210;
+  fiat_p256_mulx_u32(&x209, &x210, x191, UINT32_C(0xffffffff));
+  uint32_t x211;
+  uint32_t x212;
+  fiat_p256_mulx_u32(&x211, &x212, x191, UINT32_C(0xffffffff));
+  uint32_t x213;
+  uint32_t x214;
+  fiat_p256_mulx_u32(&x213, &x214, x191, UINT32_C(0xffffffff));
+  uint32_t x215;
+  uint32_t x216;
+  fiat_p256_mulx_u32(&x215, &x216, x191, UINT32_C(0xffffffff));
+  uint32_t x217;
+  fiat_p256_uint1 x218;
+  fiat_p256_addcarryx_u32(&x217, &x218, 0x0, x213, x216);
+  uint32_t x219;
+  fiat_p256_uint1 x220;
+  fiat_p256_addcarryx_u32(&x219, &x220, x218, x211, x214);
+  uint32_t x221;
+  fiat_p256_uint1 x222;
+  fiat_p256_addcarryx_u32(&x221, &x222, x220, 0x0, x212);
+  uint32_t x223;
+  fiat_p256_uint1 x224;
+  fiat_p256_addcarryx_u32(&x223, &x224, 0x0, x215, x191);
+  uint32_t x225;
+  fiat_p256_uint1 x226;
+  fiat_p256_addcarryx_u32(&x225, &x226, x224, x217, x193);
+  uint32_t x227;
+  fiat_p256_uint1 x228;
+  fiat_p256_addcarryx_u32(&x227, &x228, x226, x219, x195);
+  uint32_t x229;
+  fiat_p256_uint1 x230;
+  fiat_p256_addcarryx_u32(&x229, &x230, x228, x221, x197);
+  uint32_t x231;
+  fiat_p256_uint1 x232;
+  fiat_p256_addcarryx_u32(&x231, &x232, x230, 0x0, x199);
+  uint32_t x233;
+  fiat_p256_uint1 x234;
+  fiat_p256_addcarryx_u32(&x233, &x234, x232, 0x0, x201);
+  uint32_t x235;
+  fiat_p256_uint1 x236;
+  fiat_p256_addcarryx_u32(&x235, &x236, x234, x191, x203);
+  uint32_t x237;
+  fiat_p256_uint1 x238;
+  fiat_p256_addcarryx_u32(&x237, &x238, x236, x209, x205);
+  uint32_t x239;
+  fiat_p256_uint1 x240;
+  fiat_p256_addcarryx_u32(&x239, &x240, x238, x210, x207);
+  uint32_t x241;
+  fiat_p256_uint1 x242;
+  fiat_p256_addcarryx_u32(&x241, &x242, x240, 0x0, x208);
+  uint32_t x243;
+  uint32_t x244;
+  fiat_p256_mulx_u32(&x243, &x244, x3, (arg2[7]));
+  uint32_t x245;
+  uint32_t x246;
+  fiat_p256_mulx_u32(&x245, &x246, x3, (arg2[6]));
+  uint32_t x247;
+  uint32_t x248;
+  fiat_p256_mulx_u32(&x247, &x248, x3, (arg2[5]));
+  uint32_t x249;
+  uint32_t x250;
+  fiat_p256_mulx_u32(&x249, &x250, x3, (arg2[4]));
+  uint32_t x251;
+  uint32_t x252;
+  fiat_p256_mulx_u32(&x251, &x252, x3, (arg2[3]));
+  uint32_t x253;
+  uint32_t x254;
+  fiat_p256_mulx_u32(&x253, &x254, x3, (arg2[2]));
+  uint32_t x255;
+  uint32_t x256;
+  fiat_p256_mulx_u32(&x255, &x256, x3, (arg2[1]));
+  uint32_t x257;
+  uint32_t x258;
+  fiat_p256_mulx_u32(&x257, &x258, x3, (arg2[0]));
+  uint32_t x259;
+  fiat_p256_uint1 x260;
+  fiat_p256_addcarryx_u32(&x259, &x260, 0x0, x255, x258);
+  uint32_t x261;
+  fiat_p256_uint1 x262;
+  fiat_p256_addcarryx_u32(&x261, &x262, x260, x253, x256);
+  uint32_t x263;
+  fiat_p256_uint1 x264;
+  fiat_p256_addcarryx_u32(&x263, &x264, x262, x251, x254);
+  uint32_t x265;
+  fiat_p256_uint1 x266;
+  fiat_p256_addcarryx_u32(&x265, &x266, x264, x249, x252);
+  uint32_t x267;
+  fiat_p256_uint1 x268;
+  fiat_p256_addcarryx_u32(&x267, &x268, x266, x247, x250);
+  uint32_t x269;
+  fiat_p256_uint1 x270;
+  fiat_p256_addcarryx_u32(&x269, &x270, x268, x245, x248);
+  uint32_t x271;
+  fiat_p256_uint1 x272;
+  fiat_p256_addcarryx_u32(&x271, &x272, x270, x243, x246);
+  uint32_t x273;
+  fiat_p256_uint1 x274;
+  fiat_p256_addcarryx_u32(&x273, &x274, x272, 0x0, x244);
+  uint32_t x275;
+  fiat_p256_uint1 x276;
+  fiat_p256_addcarryx_u32(&x275, &x276, 0x0, x257, x225);
+  uint32_t x277;
+  fiat_p256_uint1 x278;
+  fiat_p256_addcarryx_u32(&x277, &x278, x276, x259, x227);
+  uint32_t x279;
+  fiat_p256_uint1 x280;
+  fiat_p256_addcarryx_u32(&x279, &x280, x278, x261, x229);
+  uint32_t x281;
+  fiat_p256_uint1 x282;
+  fiat_p256_addcarryx_u32(&x281, &x282, x280, x263, x231);
+  uint32_t x283;
+  fiat_p256_uint1 x284;
+  fiat_p256_addcarryx_u32(&x283, &x284, x282, x265, x233);
+  uint32_t x285;
+  fiat_p256_uint1 x286;
+  fiat_p256_addcarryx_u32(&x285, &x286, x284, x267, x235);
+  uint32_t x287;
+  fiat_p256_uint1 x288;
+  fiat_p256_addcarryx_u32(&x287, &x288, x286, x269, x237);
+  uint32_t x289;
+  fiat_p256_uint1 x290;
+  fiat_p256_addcarryx_u32(&x289, &x290, x288, x271, x239);
+  uint32_t x291;
+  fiat_p256_uint1 x292;
+  fiat_p256_addcarryx_u32(&x291, &x292, x290, x273, x241);
+  uint32_t x293;
+  uint32_t x294;
+  fiat_p256_mulx_u32(&x293, &x294, x275, UINT32_C(0xffffffff));
+  uint32_t x295;
+  uint32_t x296;
+  fiat_p256_mulx_u32(&x295, &x296, x275, UINT32_C(0xffffffff));
+  uint32_t x297;
+  uint32_t x298;
+  fiat_p256_mulx_u32(&x297, &x298, x275, UINT32_C(0xffffffff));
+  uint32_t x299;
+  uint32_t x300;
+  fiat_p256_mulx_u32(&x299, &x300, x275, UINT32_C(0xffffffff));
+  uint32_t x301;
+  fiat_p256_uint1 x302;
+  fiat_p256_addcarryx_u32(&x301, &x302, 0x0, x297, x300);
+  uint32_t x303;
+  fiat_p256_uint1 x304;
+  fiat_p256_addcarryx_u32(&x303, &x304, x302, x295, x298);
+  uint32_t x305;
+  fiat_p256_uint1 x306;
+  fiat_p256_addcarryx_u32(&x305, &x306, x304, 0x0, x296);
+  uint32_t x307;
+  fiat_p256_uint1 x308;
+  fiat_p256_addcarryx_u32(&x307, &x308, 0x0, x299, x275);
+  uint32_t x309;
+  fiat_p256_uint1 x310;
+  fiat_p256_addcarryx_u32(&x309, &x310, x308, x301, x277);
+  uint32_t x311;
+  fiat_p256_uint1 x312;
+  fiat_p256_addcarryx_u32(&x311, &x312, x310, x303, x279);
+  uint32_t x313;
+  fiat_p256_uint1 x314;
+  fiat_p256_addcarryx_u32(&x313, &x314, x312, x305, x281);
+  uint32_t x315;
+  fiat_p256_uint1 x316;
+  fiat_p256_addcarryx_u32(&x315, &x316, x314, 0x0, x283);
+  uint32_t x317;
+  fiat_p256_uint1 x318;
+  fiat_p256_addcarryx_u32(&x317, &x318, x316, 0x0, x285);
+  uint32_t x319;
+  fiat_p256_uint1 x320;
+  fiat_p256_addcarryx_u32(&x319, &x320, x318, x275, x287);
+  uint32_t x321;
+  fiat_p256_uint1 x322;
+  fiat_p256_addcarryx_u32(&x321, &x322, x320, x293, x289);
+  uint32_t x323;
+  fiat_p256_uint1 x324;
+  fiat_p256_addcarryx_u32(&x323, &x324, x322, x294, x291);
+  uint32_t x325;
+  fiat_p256_uint1 x326;
+  fiat_p256_addcarryx_u32(&x325, &x326, x324, 0x0, x292);
+  uint32_t x327;
+  uint32_t x328;
+  fiat_p256_mulx_u32(&x327, &x328, x4, (arg2[7]));
+  uint32_t x329;
+  uint32_t x330;
+  fiat_p256_mulx_u32(&x329, &x330, x4, (arg2[6]));
+  uint32_t x331;
+  uint32_t x332;
+  fiat_p256_mulx_u32(&x331, &x332, x4, (arg2[5]));
+  uint32_t x333;
+  uint32_t x334;
+  fiat_p256_mulx_u32(&x333, &x334, x4, (arg2[4]));
+  uint32_t x335;
+  uint32_t x336;
+  fiat_p256_mulx_u32(&x335, &x336, x4, (arg2[3]));
+  uint32_t x337;
+  uint32_t x338;
+  fiat_p256_mulx_u32(&x337, &x338, x4, (arg2[2]));
+  uint32_t x339;
+  uint32_t x340;
+  fiat_p256_mulx_u32(&x339, &x340, x4, (arg2[1]));
+  uint32_t x341;
+  uint32_t x342;
+  fiat_p256_mulx_u32(&x341, &x342, x4, (arg2[0]));
+  uint32_t x343;
+  fiat_p256_uint1 x344;
+  fiat_p256_addcarryx_u32(&x343, &x344, 0x0, x339, x342);
+  uint32_t x345;
+  fiat_p256_uint1 x346;
+  fiat_p256_addcarryx_u32(&x345, &x346, x344, x337, x340);
+  uint32_t x347;
+  fiat_p256_uint1 x348;
+  fiat_p256_addcarryx_u32(&x347, &x348, x346, x335, x338);
+  uint32_t x349;
+  fiat_p256_uint1 x350;
+  fiat_p256_addcarryx_u32(&x349, &x350, x348, x333, x336);
+  uint32_t x351;
+  fiat_p256_uint1 x352;
+  fiat_p256_addcarryx_u32(&x351, &x352, x350, x331, x334);
+  uint32_t x353;
+  fiat_p256_uint1 x354;
+  fiat_p256_addcarryx_u32(&x353, &x354, x352, x329, x332);
+  uint32_t x355;
+  fiat_p256_uint1 x356;
+  fiat_p256_addcarryx_u32(&x355, &x356, x354, x327, x330);
+  uint32_t x357;
+  fiat_p256_uint1 x358;
+  fiat_p256_addcarryx_u32(&x357, &x358, x356, 0x0, x328);
+  uint32_t x359;
+  fiat_p256_uint1 x360;
+  fiat_p256_addcarryx_u32(&x359, &x360, 0x0, x341, x309);
+  uint32_t x361;
+  fiat_p256_uint1 x362;
+  fiat_p256_addcarryx_u32(&x361, &x362, x360, x343, x311);
+  uint32_t x363;
+  fiat_p256_uint1 x364;
+  fiat_p256_addcarryx_u32(&x363, &x364, x362, x345, x313);
+  uint32_t x365;
+  fiat_p256_uint1 x366;
+  fiat_p256_addcarryx_u32(&x365, &x366, x364, x347, x315);
+  uint32_t x367;
+  fiat_p256_uint1 x368;
+  fiat_p256_addcarryx_u32(&x367, &x368, x366, x349, x317);
+  uint32_t x369;
+  fiat_p256_uint1 x370;
+  fiat_p256_addcarryx_u32(&x369, &x370, x368, x351, x319);
+  uint32_t x371;
+  fiat_p256_uint1 x372;
+  fiat_p256_addcarryx_u32(&x371, &x372, x370, x353, x321);
+  uint32_t x373;
+  fiat_p256_uint1 x374;
+  fiat_p256_addcarryx_u32(&x373, &x374, x372, x355, x323);
+  uint32_t x375;
+  fiat_p256_uint1 x376;
+  fiat_p256_addcarryx_u32(&x375, &x376, x374, x357, x325);
+  uint32_t x377;
+  uint32_t x378;
+  fiat_p256_mulx_u32(&x377, &x378, x359, UINT32_C(0xffffffff));
+  uint32_t x379;
+  uint32_t x380;
+  fiat_p256_mulx_u32(&x379, &x380, x359, UINT32_C(0xffffffff));
+  uint32_t x381;
+  uint32_t x382;
+  fiat_p256_mulx_u32(&x381, &x382, x359, UINT32_C(0xffffffff));
+  uint32_t x383;
+  uint32_t x384;
+  fiat_p256_mulx_u32(&x383, &x384, x359, UINT32_C(0xffffffff));
+  uint32_t x385;
+  fiat_p256_uint1 x386;
+  fiat_p256_addcarryx_u32(&x385, &x386, 0x0, x381, x384);
+  uint32_t x387;
+  fiat_p256_uint1 x388;
+  fiat_p256_addcarryx_u32(&x387, &x388, x386, x379, x382);
+  uint32_t x389;
+  fiat_p256_uint1 x390;
+  fiat_p256_addcarryx_u32(&x389, &x390, x388, 0x0, x380);
+  uint32_t x391;
+  fiat_p256_uint1 x392;
+  fiat_p256_addcarryx_u32(&x391, &x392, 0x0, x383, x359);
+  uint32_t x393;
+  fiat_p256_uint1 x394;
+  fiat_p256_addcarryx_u32(&x393, &x394, x392, x385, x361);
+  uint32_t x395;
+  fiat_p256_uint1 x396;
+  fiat_p256_addcarryx_u32(&x395, &x396, x394, x387, x363);
+  uint32_t x397;
+  fiat_p256_uint1 x398;
+  fiat_p256_addcarryx_u32(&x397, &x398, x396, x389, x365);
+  uint32_t x399;
+  fiat_p256_uint1 x400;
+  fiat_p256_addcarryx_u32(&x399, &x400, x398, 0x0, x367);
+  uint32_t x401;
+  fiat_p256_uint1 x402;
+  fiat_p256_addcarryx_u32(&x401, &x402, x400, 0x0, x369);
+  uint32_t x403;
+  fiat_p256_uint1 x404;
+  fiat_p256_addcarryx_u32(&x403, &x404, x402, x359, x371);
+  uint32_t x405;
+  fiat_p256_uint1 x406;
+  fiat_p256_addcarryx_u32(&x405, &x406, x404, x377, x373);
+  uint32_t x407;
+  fiat_p256_uint1 x408;
+  fiat_p256_addcarryx_u32(&x407, &x408, x406, x378, x375);
+  uint32_t x409;
+  fiat_p256_uint1 x410;
+  fiat_p256_addcarryx_u32(&x409, &x410, x408, 0x0, x376);
+  uint32_t x411;
+  uint32_t x412;
+  fiat_p256_mulx_u32(&x411, &x412, x5, (arg2[7]));
+  uint32_t x413;
+  uint32_t x414;
+  fiat_p256_mulx_u32(&x413, &x414, x5, (arg2[6]));
+  uint32_t x415;
+  uint32_t x416;
+  fiat_p256_mulx_u32(&x415, &x416, x5, (arg2[5]));
+  uint32_t x417;
+  uint32_t x418;
+  fiat_p256_mulx_u32(&x417, &x418, x5, (arg2[4]));
+  uint32_t x419;
+  uint32_t x420;
+  fiat_p256_mulx_u32(&x419, &x420, x5, (arg2[3]));
+  uint32_t x421;
+  uint32_t x422;
+  fiat_p256_mulx_u32(&x421, &x422, x5, (arg2[2]));
+  uint32_t x423;
+  uint32_t x424;
+  fiat_p256_mulx_u32(&x423, &x424, x5, (arg2[1]));
+  uint32_t x425;
+  uint32_t x426;
+  fiat_p256_mulx_u32(&x425, &x426, x5, (arg2[0]));
+  uint32_t x427;
+  fiat_p256_uint1 x428;
+  fiat_p256_addcarryx_u32(&x427, &x428, 0x0, x423, x426);
+  uint32_t x429;
+  fiat_p256_uint1 x430;
+  fiat_p256_addcarryx_u32(&x429, &x430, x428, x421, x424);
+  uint32_t x431;
+  fiat_p256_uint1 x432;
+  fiat_p256_addcarryx_u32(&x431, &x432, x430, x419, x422);
+  uint32_t x433;
+  fiat_p256_uint1 x434;
+  fiat_p256_addcarryx_u32(&x433, &x434, x432, x417, x420);
+  uint32_t x435;
+  fiat_p256_uint1 x436;
+  fiat_p256_addcarryx_u32(&x435, &x436, x434, x415, x418);
+  uint32_t x437;
+  fiat_p256_uint1 x438;
+  fiat_p256_addcarryx_u32(&x437, &x438, x436, x413, x416);
+  uint32_t x439;
+  fiat_p256_uint1 x440;
+  fiat_p256_addcarryx_u32(&x439, &x440, x438, x411, x414);
+  uint32_t x441;
+  fiat_p256_uint1 x442;
+  fiat_p256_addcarryx_u32(&x441, &x442, x440, 0x0, x412);
+  uint32_t x443;
+  fiat_p256_uint1 x444;
+  fiat_p256_addcarryx_u32(&x443, &x444, 0x0, x425, x393);
+  uint32_t x445;
+  fiat_p256_uint1 x446;
+  fiat_p256_addcarryx_u32(&x445, &x446, x444, x427, x395);
+  uint32_t x447;
+  fiat_p256_uint1 x448;
+  fiat_p256_addcarryx_u32(&x447, &x448, x446, x429, x397);
+  uint32_t x449;
+  fiat_p256_uint1 x450;
+  fiat_p256_addcarryx_u32(&x449, &x450, x448, x431, x399);
+  uint32_t x451;
+  fiat_p256_uint1 x452;
+  fiat_p256_addcarryx_u32(&x451, &x452, x450, x433, x401);
+  uint32_t x453;
+  fiat_p256_uint1 x454;
+  fiat_p256_addcarryx_u32(&x453, &x454, x452, x435, x403);
+  uint32_t x455;
+  fiat_p256_uint1 x456;
+  fiat_p256_addcarryx_u32(&x455, &x456, x454, x437, x405);
+  uint32_t x457;
+  fiat_p256_uint1 x458;
+  fiat_p256_addcarryx_u32(&x457, &x458, x456, x439, x407);
+  uint32_t x459;
+  fiat_p256_uint1 x460;
+  fiat_p256_addcarryx_u32(&x459, &x460, x458, x441, x409);
+  uint32_t x461;
+  uint32_t x462;
+  fiat_p256_mulx_u32(&x461, &x462, x443, UINT32_C(0xffffffff));
+  uint32_t x463;
+  uint32_t x464;
+  fiat_p256_mulx_u32(&x463, &x464, x443, UINT32_C(0xffffffff));
+  uint32_t x465;
+  uint32_t x466;
+  fiat_p256_mulx_u32(&x465, &x466, x443, UINT32_C(0xffffffff));
+  uint32_t x467;
+  uint32_t x468;
+  fiat_p256_mulx_u32(&x467, &x468, x443, UINT32_C(0xffffffff));
+  uint32_t x469;
+  fiat_p256_uint1 x470;
+  fiat_p256_addcarryx_u32(&x469, &x470, 0x0, x465, x468);
+  uint32_t x471;
+  fiat_p256_uint1 x472;
+  fiat_p256_addcarryx_u32(&x471, &x472, x470, x463, x466);
+  uint32_t x473;
+  fiat_p256_uint1 x474;
+  fiat_p256_addcarryx_u32(&x473, &x474, x472, 0x0, x464);
+  uint32_t x475;
+  fiat_p256_uint1 x476;
+  fiat_p256_addcarryx_u32(&x475, &x476, 0x0, x467, x443);
+  uint32_t x477;
+  fiat_p256_uint1 x478;
+  fiat_p256_addcarryx_u32(&x477, &x478, x476, x469, x445);
+  uint32_t x479;
+  fiat_p256_uint1 x480;
+  fiat_p256_addcarryx_u32(&x479, &x480, x478, x471, x447);
+  uint32_t x481;
+  fiat_p256_uint1 x482;
+  fiat_p256_addcarryx_u32(&x481, &x482, x480, x473, x449);
+  uint32_t x483;
+  fiat_p256_uint1 x484;
+  fiat_p256_addcarryx_u32(&x483, &x484, x482, 0x0, x451);
+  uint32_t x485;
+  fiat_p256_uint1 x486;
+  fiat_p256_addcarryx_u32(&x485, &x486, x484, 0x0, x453);
+  uint32_t x487;
+  fiat_p256_uint1 x488;
+  fiat_p256_addcarryx_u32(&x487, &x488, x486, x443, x455);
+  uint32_t x489;
+  fiat_p256_uint1 x490;
+  fiat_p256_addcarryx_u32(&x489, &x490, x488, x461, x457);
+  uint32_t x491;
+  fiat_p256_uint1 x492;
+  fiat_p256_addcarryx_u32(&x491, &x492, x490, x462, x459);
+  uint32_t x493;
+  fiat_p256_uint1 x494;
+  fiat_p256_addcarryx_u32(&x493, &x494, x492, 0x0, x460);
+  uint32_t x495;
+  uint32_t x496;
+  fiat_p256_mulx_u32(&x495, &x496, x6, (arg2[7]));
+  uint32_t x497;
+  uint32_t x498;
+  fiat_p256_mulx_u32(&x497, &x498, x6, (arg2[6]));
+  uint32_t x499;
+  uint32_t x500;
+  fiat_p256_mulx_u32(&x499, &x500, x6, (arg2[5]));
+  uint32_t x501;
+  uint32_t x502;
+  fiat_p256_mulx_u32(&x501, &x502, x6, (arg2[4]));
+  uint32_t x503;
+  uint32_t x504;
+  fiat_p256_mulx_u32(&x503, &x504, x6, (arg2[3]));
+  uint32_t x505;
+  uint32_t x506;
+  fiat_p256_mulx_u32(&x505, &x506, x6, (arg2[2]));
+  uint32_t x507;
+  uint32_t x508;
+  fiat_p256_mulx_u32(&x507, &x508, x6, (arg2[1]));
+  uint32_t x509;
+  uint32_t x510;
+  fiat_p256_mulx_u32(&x509, &x510, x6, (arg2[0]));
+  uint32_t x511;
+  fiat_p256_uint1 x512;
+  fiat_p256_addcarryx_u32(&x511, &x512, 0x0, x507, x510);
+  uint32_t x513;
+  fiat_p256_uint1 x514;
+  fiat_p256_addcarryx_u32(&x513, &x514, x512, x505, x508);
+  uint32_t x515;
+  fiat_p256_uint1 x516;
+  fiat_p256_addcarryx_u32(&x515, &x516, x514, x503, x506);
+  uint32_t x517;
+  fiat_p256_uint1 x518;
+  fiat_p256_addcarryx_u32(&x517, &x518, x516, x501, x504);
+  uint32_t x519;
+  fiat_p256_uint1 x520;
+  fiat_p256_addcarryx_u32(&x519, &x520, x518, x499, x502);
+  uint32_t x521;
+  fiat_p256_uint1 x522;
+  fiat_p256_addcarryx_u32(&x521, &x522, x520, x497, x500);
+  uint32_t x523;
+  fiat_p256_uint1 x524;
+  fiat_p256_addcarryx_u32(&x523, &x524, x522, x495, x498);
+  uint32_t x525;
+  fiat_p256_uint1 x526;
+  fiat_p256_addcarryx_u32(&x525, &x526, x524, 0x0, x496);
+  uint32_t x527;
+  fiat_p256_uint1 x528;
+  fiat_p256_addcarryx_u32(&x527, &x528, 0x0, x509, x477);
+  uint32_t x529;
+  fiat_p256_uint1 x530;
+  fiat_p256_addcarryx_u32(&x529, &x530, x528, x511, x479);
+  uint32_t x531;
+  fiat_p256_uint1 x532;
+  fiat_p256_addcarryx_u32(&x531, &x532, x530, x513, x481);
+  uint32_t x533;
+  fiat_p256_uint1 x534;
+  fiat_p256_addcarryx_u32(&x533, &x534, x532, x515, x483);
+  uint32_t x535;
+  fiat_p256_uint1 x536;
+  fiat_p256_addcarryx_u32(&x535, &x536, x534, x517, x485);
+  uint32_t x537;
+  fiat_p256_uint1 x538;
+  fiat_p256_addcarryx_u32(&x537, &x538, x536, x519, x487);
+  uint32_t x539;
+  fiat_p256_uint1 x540;
+  fiat_p256_addcarryx_u32(&x539, &x540, x538, x521, x489);
+  uint32_t x541;
+  fiat_p256_uint1 x542;
+  fiat_p256_addcarryx_u32(&x541, &x542, x540, x523, x491);
+  uint32_t x543;
+  fiat_p256_uint1 x544;
+  fiat_p256_addcarryx_u32(&x543, &x544, x542, x525, x493);
+  uint32_t x545;
+  uint32_t x546;
+  fiat_p256_mulx_u32(&x545, &x546, x527, UINT32_C(0xffffffff));
+  uint32_t x547;
+  uint32_t x548;
+  fiat_p256_mulx_u32(&x547, &x548, x527, UINT32_C(0xffffffff));
+  uint32_t x549;
+  uint32_t x550;
+  fiat_p256_mulx_u32(&x549, &x550, x527, UINT32_C(0xffffffff));
+  uint32_t x551;
+  uint32_t x552;
+  fiat_p256_mulx_u32(&x551, &x552, x527, UINT32_C(0xffffffff));
+  uint32_t x553;
+  fiat_p256_uint1 x554;
+  fiat_p256_addcarryx_u32(&x553, &x554, 0x0, x549, x552);
+  uint32_t x555;
+  fiat_p256_uint1 x556;
+  fiat_p256_addcarryx_u32(&x555, &x556, x554, x547, x550);
+  uint32_t x557;
+  fiat_p256_uint1 x558;
+  fiat_p256_addcarryx_u32(&x557, &x558, x556, 0x0, x548);
+  uint32_t x559;
+  fiat_p256_uint1 x560;
+  fiat_p256_addcarryx_u32(&x559, &x560, 0x0, x551, x527);
+  uint32_t x561;
+  fiat_p256_uint1 x562;
+  fiat_p256_addcarryx_u32(&x561, &x562, x560, x553, x529);
+  uint32_t x563;
+  fiat_p256_uint1 x564;
+  fiat_p256_addcarryx_u32(&x563, &x564, x562, x555, x531);
+  uint32_t x565;
+  fiat_p256_uint1 x566;
+  fiat_p256_addcarryx_u32(&x565, &x566, x564, x557, x533);
+  uint32_t x567;
+  fiat_p256_uint1 x568;
+  fiat_p256_addcarryx_u32(&x567, &x568, x566, 0x0, x535);
+  uint32_t x569;
+  fiat_p256_uint1 x570;
+  fiat_p256_addcarryx_u32(&x569, &x570, x568, 0x0, x537);
+  uint32_t x571;
+  fiat_p256_uint1 x572;
+  fiat_p256_addcarryx_u32(&x571, &x572, x570, x527, x539);
+  uint32_t x573;
+  fiat_p256_uint1 x574;
+  fiat_p256_addcarryx_u32(&x573, &x574, x572, x545, x541);
+  uint32_t x575;
+  fiat_p256_uint1 x576;
+  fiat_p256_addcarryx_u32(&x575, &x576, x574, x546, x543);
+  uint32_t x577;
+  fiat_p256_uint1 x578;
+  fiat_p256_addcarryx_u32(&x577, &x578, x576, 0x0, x544);
+  uint32_t x579;
+  uint32_t x580;
+  fiat_p256_mulx_u32(&x579, &x580, x7, (arg2[7]));
+  uint32_t x581;
+  uint32_t x582;
+  fiat_p256_mulx_u32(&x581, &x582, x7, (arg2[6]));
+  uint32_t x583;
+  uint32_t x584;
+  fiat_p256_mulx_u32(&x583, &x584, x7, (arg2[5]));
+  uint32_t x585;
+  uint32_t x586;
+  fiat_p256_mulx_u32(&x585, &x586, x7, (arg2[4]));
+  uint32_t x587;
+  uint32_t x588;
+  fiat_p256_mulx_u32(&x587, &x588, x7, (arg2[3]));
+  uint32_t x589;
+  uint32_t x590;
+  fiat_p256_mulx_u32(&x589, &x590, x7, (arg2[2]));
+  uint32_t x591;
+  uint32_t x592;
+  fiat_p256_mulx_u32(&x591, &x592, x7, (arg2[1]));
+  uint32_t x593;
+  uint32_t x594;
+  fiat_p256_mulx_u32(&x593, &x594, x7, (arg2[0]));
+  uint32_t x595;
+  fiat_p256_uint1 x596;
+  fiat_p256_addcarryx_u32(&x595, &x596, 0x0, x591, x594);
+  uint32_t x597;
+  fiat_p256_uint1 x598;
+  fiat_p256_addcarryx_u32(&x597, &x598, x596, x589, x592);
+  uint32_t x599;
+  fiat_p256_uint1 x600;
+  fiat_p256_addcarryx_u32(&x599, &x600, x598, x587, x590);
+  uint32_t x601;
+  fiat_p256_uint1 x602;
+  fiat_p256_addcarryx_u32(&x601, &x602, x600, x585, x588);
+  uint32_t x603;
+  fiat_p256_uint1 x604;
+  fiat_p256_addcarryx_u32(&x603, &x604, x602, x583, x586);
+  uint32_t x605;
+  fiat_p256_uint1 x606;
+  fiat_p256_addcarryx_u32(&x605, &x606, x604, x581, x584);
+  uint32_t x607;
+  fiat_p256_uint1 x608;
+  fiat_p256_addcarryx_u32(&x607, &x608, x606, x579, x582);
+  uint32_t x609;
+  fiat_p256_uint1 x610;
+  fiat_p256_addcarryx_u32(&x609, &x610, x608, 0x0, x580);
+  uint32_t x611;
+  fiat_p256_uint1 x612;
+  fiat_p256_addcarryx_u32(&x611, &x612, 0x0, x593, x561);
+  uint32_t x613;
+  fiat_p256_uint1 x614;
+  fiat_p256_addcarryx_u32(&x613, &x614, x612, x595, x563);
+  uint32_t x615;
+  fiat_p256_uint1 x616;
+  fiat_p256_addcarryx_u32(&x615, &x616, x614, x597, x565);
+  uint32_t x617;
+  fiat_p256_uint1 x618;
+  fiat_p256_addcarryx_u32(&x617, &x618, x616, x599, x567);
+  uint32_t x619;
+  fiat_p256_uint1 x620;
+  fiat_p256_addcarryx_u32(&x619, &x620, x618, x601, x569);
+  uint32_t x621;
+  fiat_p256_uint1 x622;
+  fiat_p256_addcarryx_u32(&x621, &x622, x620, x603, x571);
+  uint32_t x623;
+  fiat_p256_uint1 x624;
+  fiat_p256_addcarryx_u32(&x623, &x624, x622, x605, x573);
+  uint32_t x625;
+  fiat_p256_uint1 x626;
+  fiat_p256_addcarryx_u32(&x625, &x626, x624, x607, x575);
+  uint32_t x627;
+  fiat_p256_uint1 x628;
+  fiat_p256_addcarryx_u32(&x627, &x628, x626, x609, x577);
+  uint32_t x629;
+  uint32_t x630;
+  fiat_p256_mulx_u32(&x629, &x630, x611, UINT32_C(0xffffffff));
+  uint32_t x631;
+  uint32_t x632;
+  fiat_p256_mulx_u32(&x631, &x632, x611, UINT32_C(0xffffffff));
+  uint32_t x633;
+  uint32_t x634;
+  fiat_p256_mulx_u32(&x633, &x634, x611, UINT32_C(0xffffffff));
+  uint32_t x635;
+  uint32_t x636;
+  fiat_p256_mulx_u32(&x635, &x636, x611, UINT32_C(0xffffffff));
+  uint32_t x637;
+  fiat_p256_uint1 x638;
+  fiat_p256_addcarryx_u32(&x637, &x638, 0x0, x633, x636);
+  uint32_t x639;
+  fiat_p256_uint1 x640;
+  fiat_p256_addcarryx_u32(&x639, &x640, x638, x631, x634);
+  uint32_t x641;
+  fiat_p256_uint1 x642;
+  fiat_p256_addcarryx_u32(&x641, &x642, x640, 0x0, x632);
+  uint32_t x643;
+  fiat_p256_uint1 x644;
+  fiat_p256_addcarryx_u32(&x643, &x644, 0x0, x635, x611);
+  uint32_t x645;
+  fiat_p256_uint1 x646;
+  fiat_p256_addcarryx_u32(&x645, &x646, x644, x637, x613);
+  uint32_t x647;
+  fiat_p256_uint1 x648;
+  fiat_p256_addcarryx_u32(&x647, &x648, x646, x639, x615);
+  uint32_t x649;
+  fiat_p256_uint1 x650;
+  fiat_p256_addcarryx_u32(&x649, &x650, x648, x641, x617);
+  uint32_t x651;
+  fiat_p256_uint1 x652;
+  fiat_p256_addcarryx_u32(&x651, &x652, x650, 0x0, x619);
+  uint32_t x653;
+  fiat_p256_uint1 x654;
+  fiat_p256_addcarryx_u32(&x653, &x654, x652, 0x0, x621);
+  uint32_t x655;
+  fiat_p256_uint1 x656;
+  fiat_p256_addcarryx_u32(&x655, &x656, x654, x611, x623);
+  uint32_t x657;
+  fiat_p256_uint1 x658;
+  fiat_p256_addcarryx_u32(&x657, &x658, x656, x629, x625);
+  uint32_t x659;
+  fiat_p256_uint1 x660;
+  fiat_p256_addcarryx_u32(&x659, &x660, x658, x630, x627);
+  uint32_t x661;
+  fiat_p256_uint1 x662;
+  fiat_p256_addcarryx_u32(&x661, &x662, x660, 0x0, x628);
+  uint32_t x663;
+  fiat_p256_uint1 x664;
+  fiat_p256_subborrowx_u32(&x663, &x664, 0x0, x645, UINT32_C(0xffffffff));
+  uint32_t x665;
+  fiat_p256_uint1 x666;
+  fiat_p256_subborrowx_u32(&x665, &x666, x664, x647, UINT32_C(0xffffffff));
+  uint32_t x667;
+  fiat_p256_uint1 x668;
+  fiat_p256_subborrowx_u32(&x667, &x668, x666, x649, UINT32_C(0xffffffff));
+  uint32_t x669;
+  fiat_p256_uint1 x670;
+  fiat_p256_subborrowx_u32(&x669, &x670, x668, x651, 0x0);
+  uint32_t x671;
+  fiat_p256_uint1 x672;
+  fiat_p256_subborrowx_u32(&x671, &x672, x670, x653, 0x0);
+  uint32_t x673;
+  fiat_p256_uint1 x674;
+  fiat_p256_subborrowx_u32(&x673, &x674, x672, x655, 0x0);
+  uint32_t x675;
+  fiat_p256_uint1 x676;
+  fiat_p256_subborrowx_u32(&x675, &x676, x674, x657, 0x1);
+  uint32_t x677;
+  fiat_p256_uint1 x678;
+  fiat_p256_subborrowx_u32(&x677, &x678, x676, x659, UINT32_C(0xffffffff));
+  uint32_t x679;
+  fiat_p256_uint1 x680;
+  fiat_p256_subborrowx_u32(&x679, &x680, x678, x661, 0x0);
+  uint32_t x681;
+  fiat_p256_cmovznz_u32(&x681, x680, x663, x645);
+  uint32_t x682;
+  fiat_p256_cmovznz_u32(&x682, x680, x665, x647);
+  uint32_t x683;
+  fiat_p256_cmovznz_u32(&x683, x680, x667, x649);
+  uint32_t x684;
+  fiat_p256_cmovznz_u32(&x684, x680, x669, x651);
+  uint32_t x685;
+  fiat_p256_cmovznz_u32(&x685, x680, x671, x653);
+  uint32_t x686;
+  fiat_p256_cmovznz_u32(&x686, x680, x673, x655);
+  uint32_t x687;
+  fiat_p256_cmovznz_u32(&x687, x680, x675, x657);
+  uint32_t x688;
+  fiat_p256_cmovznz_u32(&x688, x680, x677, x659);
+  out1[0] = x681;
+  out1[1] = x682;
+  out1[2] = x683;
+  out1[3] = x684;
+  out1[4] = x685;
+  out1[5] = x686;
+  out1[6] = x687;
+  out1[7] = x688;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_square(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[1]);
+  uint32_t x2 = (arg1[2]);
+  uint32_t x3 = (arg1[3]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[5]);
+  uint32_t x6 = (arg1[6]);
+  uint32_t x7 = (arg1[7]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9;
+  uint32_t x10;
+  fiat_p256_mulx_u32(&x9, &x10, x8, (arg1[7]));
+  uint32_t x11;
+  uint32_t x12;
+  fiat_p256_mulx_u32(&x11, &x12, x8, (arg1[6]));
+  uint32_t x13;
+  uint32_t x14;
+  fiat_p256_mulx_u32(&x13, &x14, x8, (arg1[5]));
+  uint32_t x15;
+  uint32_t x16;
+  fiat_p256_mulx_u32(&x15, &x16, x8, (arg1[4]));
+  uint32_t x17;
+  uint32_t x18;
+  fiat_p256_mulx_u32(&x17, &x18, x8, (arg1[3]));
+  uint32_t x19;
+  uint32_t x20;
+  fiat_p256_mulx_u32(&x19, &x20, x8, (arg1[2]));
+  uint32_t x21;
+  uint32_t x22;
+  fiat_p256_mulx_u32(&x21, &x22, x8, (arg1[1]));
+  uint32_t x23;
+  uint32_t x24;
+  fiat_p256_mulx_u32(&x23, &x24, x8, (arg1[0]));
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_addcarryx_u32(&x25, &x26, 0x0, x21, x24);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u32(&x27, &x28, x26, x19, x22);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u32(&x29, &x30, x28, x17, x20);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u32(&x31, &x32, x30, x15, x18);
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u32(&x33, &x34, x32, x13, x16);
+  uint32_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u32(&x35, &x36, x34, x11, x14);
+  uint32_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u32(&x37, &x38, x36, x9, x12);
+  uint32_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u32(&x39, &x40, x38, 0x0, x10);
+  uint32_t x41;
+  uint32_t x42;
+  fiat_p256_mulx_u32(&x41, &x42, x23, UINT32_C(0xffffffff));
+  uint32_t x43;
+  uint32_t x44;
+  fiat_p256_mulx_u32(&x43, &x44, x23, UINT32_C(0xffffffff));
+  uint32_t x45;
+  uint32_t x46;
+  fiat_p256_mulx_u32(&x45, &x46, x23, UINT32_C(0xffffffff));
+  uint32_t x47;
+  uint32_t x48;
+  fiat_p256_mulx_u32(&x47, &x48, x23, UINT32_C(0xffffffff));
+  uint32_t x49;
+  fiat_p256_uint1 x50;
+  fiat_p256_addcarryx_u32(&x49, &x50, 0x0, x45, x48);
+  uint32_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u32(&x51, &x52, x50, x43, x46);
+  uint32_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u32(&x53, &x54, x52, 0x0, x44);
+  uint32_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u32(&x55, &x56, 0x0, x47, x23);
+  uint32_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u32(&x57, &x58, x56, x49, x25);
+  uint32_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u32(&x59, &x60, x58, x51, x27);
+  uint32_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u32(&x61, &x62, x60, x53, x29);
+  uint32_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u32(&x63, &x64, x62, 0x0, x31);
+  uint32_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u32(&x65, &x66, x64, 0x0, x33);
+  uint32_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u32(&x67, &x68, x66, x23, x35);
+  uint32_t x69;
+  fiat_p256_uint1 x70;
+  fiat_p256_addcarryx_u32(&x69, &x70, x68, x41, x37);
+  uint32_t x71;
+  fiat_p256_uint1 x72;
+  fiat_p256_addcarryx_u32(&x71, &x72, x70, x42, x39);
+  uint32_t x73;
+  fiat_p256_uint1 x74;
+  fiat_p256_addcarryx_u32(&x73, &x74, x72, 0x0, 0x0);
+  uint32_t x75;
+  uint32_t x76;
+  fiat_p256_mulx_u32(&x75, &x76, x1, (arg1[7]));
+  uint32_t x77;
+  uint32_t x78;
+  fiat_p256_mulx_u32(&x77, &x78, x1, (arg1[6]));
+  uint32_t x79;
+  uint32_t x80;
+  fiat_p256_mulx_u32(&x79, &x80, x1, (arg1[5]));
+  uint32_t x81;
+  uint32_t x82;
+  fiat_p256_mulx_u32(&x81, &x82, x1, (arg1[4]));
+  uint32_t x83;
+  uint32_t x84;
+  fiat_p256_mulx_u32(&x83, &x84, x1, (arg1[3]));
+  uint32_t x85;
+  uint32_t x86;
+  fiat_p256_mulx_u32(&x85, &x86, x1, (arg1[2]));
+  uint32_t x87;
+  uint32_t x88;
+  fiat_p256_mulx_u32(&x87, &x88, x1, (arg1[1]));
+  uint32_t x89;
+  uint32_t x90;
+  fiat_p256_mulx_u32(&x89, &x90, x1, (arg1[0]));
+  uint32_t x91;
+  fiat_p256_uint1 x92;
+  fiat_p256_addcarryx_u32(&x91, &x92, 0x0, x87, x90);
+  uint32_t x93;
+  fiat_p256_uint1 x94;
+  fiat_p256_addcarryx_u32(&x93, &x94, x92, x85, x88);
+  uint32_t x95;
+  fiat_p256_uint1 x96;
+  fiat_p256_addcarryx_u32(&x95, &x96, x94, x83, x86);
+  uint32_t x97;
+  fiat_p256_uint1 x98;
+  fiat_p256_addcarryx_u32(&x97, &x98, x96, x81, x84);
+  uint32_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u32(&x99, &x100, x98, x79, x82);
+  uint32_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u32(&x101, &x102, x100, x77, x80);
+  uint32_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u32(&x103, &x104, x102, x75, x78);
+  uint32_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u32(&x105, &x106, x104, 0x0, x76);
+  uint32_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u32(&x107, &x108, 0x0, x89, x57);
+  uint32_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u32(&x109, &x110, x108, x91, x59);
+  uint32_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u32(&x111, &x112, x110, x93, x61);
+  uint32_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u32(&x113, &x114, x112, x95, x63);
+  uint32_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u32(&x115, &x116, x114, x97, x65);
+  uint32_t x117;
+  fiat_p256_uint1 x118;
+  fiat_p256_addcarryx_u32(&x117, &x118, x116, x99, x67);
+  uint32_t x119;
+  fiat_p256_uint1 x120;
+  fiat_p256_addcarryx_u32(&x119, &x120, x118, x101, x69);
+  uint32_t x121;
+  fiat_p256_uint1 x122;
+  fiat_p256_addcarryx_u32(&x121, &x122, x120, x103, x71);
+  uint32_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u32(&x123, &x124, x122, x105, (fiat_p256_uint1)x73);
+  uint32_t x125;
+  uint32_t x126;
+  fiat_p256_mulx_u32(&x125, &x126, x107, UINT32_C(0xffffffff));
+  uint32_t x127;
+  uint32_t x128;
+  fiat_p256_mulx_u32(&x127, &x128, x107, UINT32_C(0xffffffff));
+  uint32_t x129;
+  uint32_t x130;
+  fiat_p256_mulx_u32(&x129, &x130, x107, UINT32_C(0xffffffff));
+  uint32_t x131;
+  uint32_t x132;
+  fiat_p256_mulx_u32(&x131, &x132, x107, UINT32_C(0xffffffff));
+  uint32_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u32(&x133, &x134, 0x0, x129, x132);
+  uint32_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u32(&x135, &x136, x134, x127, x130);
+  uint32_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u32(&x137, &x138, x136, 0x0, x128);
+  uint32_t x139;
+  fiat_p256_uint1 x140;
+  fiat_p256_addcarryx_u32(&x139, &x140, 0x0, x131, x107);
+  uint32_t x141;
+  fiat_p256_uint1 x142;
+  fiat_p256_addcarryx_u32(&x141, &x142, x140, x133, x109);
+  uint32_t x143;
+  fiat_p256_uint1 x144;
+  fiat_p256_addcarryx_u32(&x143, &x144, x142, x135, x111);
+  uint32_t x145;
+  fiat_p256_uint1 x146;
+  fiat_p256_addcarryx_u32(&x145, &x146, x144, x137, x113);
+  uint32_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u32(&x147, &x148, x146, 0x0, x115);
+  uint32_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u32(&x149, &x150, x148, 0x0, x117);
+  uint32_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u32(&x151, &x152, x150, x107, x119);
+  uint32_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u32(&x153, &x154, x152, x125, x121);
+  uint32_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u32(&x155, &x156, x154, x126, x123);
+  uint32_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u32(&x157, &x158, x156, 0x0, x124);
+  uint32_t x159;
+  uint32_t x160;
+  fiat_p256_mulx_u32(&x159, &x160, x2, (arg1[7]));
+  uint32_t x161;
+  uint32_t x162;
+  fiat_p256_mulx_u32(&x161, &x162, x2, (arg1[6]));
+  uint32_t x163;
+  uint32_t x164;
+  fiat_p256_mulx_u32(&x163, &x164, x2, (arg1[5]));
+  uint32_t x165;
+  uint32_t x166;
+  fiat_p256_mulx_u32(&x165, &x166, x2, (arg1[4]));
+  uint32_t x167;
+  uint32_t x168;
+  fiat_p256_mulx_u32(&x167, &x168, x2, (arg1[3]));
+  uint32_t x169;
+  uint32_t x170;
+  fiat_p256_mulx_u32(&x169, &x170, x2, (arg1[2]));
+  uint32_t x171;
+  uint32_t x172;
+  fiat_p256_mulx_u32(&x171, &x172, x2, (arg1[1]));
+  uint32_t x173;
+  uint32_t x174;
+  fiat_p256_mulx_u32(&x173, &x174, x2, (arg1[0]));
+  uint32_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u32(&x175, &x176, 0x0, x171, x174);
+  uint32_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u32(&x177, &x178, x176, x169, x172);
+  uint32_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u32(&x179, &x180, x178, x167, x170);
+  uint32_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u32(&x181, &x182, x180, x165, x168);
+  uint32_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u32(&x183, &x184, x182, x163, x166);
+  uint32_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u32(&x185, &x186, x184, x161, x164);
+  uint32_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_addcarryx_u32(&x187, &x188, x186, x159, x162);
+  uint32_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_addcarryx_u32(&x189, &x190, x188, 0x0, x160);
+  uint32_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_addcarryx_u32(&x191, &x192, 0x0, x173, x141);
+  uint32_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_addcarryx_u32(&x193, &x194, x192, x175, x143);
+  uint32_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_addcarryx_u32(&x195, &x196, x194, x177, x145);
+  uint32_t x197;
+  fiat_p256_uint1 x198;
+  fiat_p256_addcarryx_u32(&x197, &x198, x196, x179, x147);
+  uint32_t x199;
+  fiat_p256_uint1 x200;
+  fiat_p256_addcarryx_u32(&x199, &x200, x198, x181, x149);
+  uint32_t x201;
+  fiat_p256_uint1 x202;
+  fiat_p256_addcarryx_u32(&x201, &x202, x200, x183, x151);
+  uint32_t x203;
+  fiat_p256_uint1 x204;
+  fiat_p256_addcarryx_u32(&x203, &x204, x202, x185, x153);
+  uint32_t x205;
+  fiat_p256_uint1 x206;
+  fiat_p256_addcarryx_u32(&x205, &x206, x204, x187, x155);
+  uint32_t x207;
+  fiat_p256_uint1 x208;
+  fiat_p256_addcarryx_u32(&x207, &x208, x206, x189, x157);
+  uint32_t x209;
+  uint32_t x210;
+  fiat_p256_mulx_u32(&x209, &x210, x191, UINT32_C(0xffffffff));
+  uint32_t x211;
+  uint32_t x212;
+  fiat_p256_mulx_u32(&x211, &x212, x191, UINT32_C(0xffffffff));
+  uint32_t x213;
+  uint32_t x214;
+  fiat_p256_mulx_u32(&x213, &x214, x191, UINT32_C(0xffffffff));
+  uint32_t x215;
+  uint32_t x216;
+  fiat_p256_mulx_u32(&x215, &x216, x191, UINT32_C(0xffffffff));
+  uint32_t x217;
+  fiat_p256_uint1 x218;
+  fiat_p256_addcarryx_u32(&x217, &x218, 0x0, x213, x216);
+  uint32_t x219;
+  fiat_p256_uint1 x220;
+  fiat_p256_addcarryx_u32(&x219, &x220, x218, x211, x214);
+  uint32_t x221;
+  fiat_p256_uint1 x222;
+  fiat_p256_addcarryx_u32(&x221, &x222, x220, 0x0, x212);
+  uint32_t x223;
+  fiat_p256_uint1 x224;
+  fiat_p256_addcarryx_u32(&x223, &x224, 0x0, x215, x191);
+  uint32_t x225;
+  fiat_p256_uint1 x226;
+  fiat_p256_addcarryx_u32(&x225, &x226, x224, x217, x193);
+  uint32_t x227;
+  fiat_p256_uint1 x228;
+  fiat_p256_addcarryx_u32(&x227, &x228, x226, x219, x195);
+  uint32_t x229;
+  fiat_p256_uint1 x230;
+  fiat_p256_addcarryx_u32(&x229, &x230, x228, x221, x197);
+  uint32_t x231;
+  fiat_p256_uint1 x232;
+  fiat_p256_addcarryx_u32(&x231, &x232, x230, 0x0, x199);
+  uint32_t x233;
+  fiat_p256_uint1 x234;
+  fiat_p256_addcarryx_u32(&x233, &x234, x232, 0x0, x201);
+  uint32_t x235;
+  fiat_p256_uint1 x236;
+  fiat_p256_addcarryx_u32(&x235, &x236, x234, x191, x203);
+  uint32_t x237;
+  fiat_p256_uint1 x238;
+  fiat_p256_addcarryx_u32(&x237, &x238, x236, x209, x205);
+  uint32_t x239;
+  fiat_p256_uint1 x240;
+  fiat_p256_addcarryx_u32(&x239, &x240, x238, x210, x207);
+  uint32_t x241;
+  fiat_p256_uint1 x242;
+  fiat_p256_addcarryx_u32(&x241, &x242, x240, 0x0, x208);
+  uint32_t x243;
+  uint32_t x244;
+  fiat_p256_mulx_u32(&x243, &x244, x3, (arg1[7]));
+  uint32_t x245;
+  uint32_t x246;
+  fiat_p256_mulx_u32(&x245, &x246, x3, (arg1[6]));
+  uint32_t x247;
+  uint32_t x248;
+  fiat_p256_mulx_u32(&x247, &x248, x3, (arg1[5]));
+  uint32_t x249;
+  uint32_t x250;
+  fiat_p256_mulx_u32(&x249, &x250, x3, (arg1[4]));
+  uint32_t x251;
+  uint32_t x252;
+  fiat_p256_mulx_u32(&x251, &x252, x3, (arg1[3]));
+  uint32_t x253;
+  uint32_t x254;
+  fiat_p256_mulx_u32(&x253, &x254, x3, (arg1[2]));
+  uint32_t x255;
+  uint32_t x256;
+  fiat_p256_mulx_u32(&x255, &x256, x3, (arg1[1]));
+  uint32_t x257;
+  uint32_t x258;
+  fiat_p256_mulx_u32(&x257, &x258, x3, (arg1[0]));
+  uint32_t x259;
+  fiat_p256_uint1 x260;
+  fiat_p256_addcarryx_u32(&x259, &x260, 0x0, x255, x258);
+  uint32_t x261;
+  fiat_p256_uint1 x262;
+  fiat_p256_addcarryx_u32(&x261, &x262, x260, x253, x256);
+  uint32_t x263;
+  fiat_p256_uint1 x264;
+  fiat_p256_addcarryx_u32(&x263, &x264, x262, x251, x254);
+  uint32_t x265;
+  fiat_p256_uint1 x266;
+  fiat_p256_addcarryx_u32(&x265, &x266, x264, x249, x252);
+  uint32_t x267;
+  fiat_p256_uint1 x268;
+  fiat_p256_addcarryx_u32(&x267, &x268, x266, x247, x250);
+  uint32_t x269;
+  fiat_p256_uint1 x270;
+  fiat_p256_addcarryx_u32(&x269, &x270, x268, x245, x248);
+  uint32_t x271;
+  fiat_p256_uint1 x272;
+  fiat_p256_addcarryx_u32(&x271, &x272, x270, x243, x246);
+  uint32_t x273;
+  fiat_p256_uint1 x274;
+  fiat_p256_addcarryx_u32(&x273, &x274, x272, 0x0, x244);
+  uint32_t x275;
+  fiat_p256_uint1 x276;
+  fiat_p256_addcarryx_u32(&x275, &x276, 0x0, x257, x225);
+  uint32_t x277;
+  fiat_p256_uint1 x278;
+  fiat_p256_addcarryx_u32(&x277, &x278, x276, x259, x227);
+  uint32_t x279;
+  fiat_p256_uint1 x280;
+  fiat_p256_addcarryx_u32(&x279, &x280, x278, x261, x229);
+  uint32_t x281;
+  fiat_p256_uint1 x282;
+  fiat_p256_addcarryx_u32(&x281, &x282, x280, x263, x231);
+  uint32_t x283;
+  fiat_p256_uint1 x284;
+  fiat_p256_addcarryx_u32(&x283, &x284, x282, x265, x233);
+  uint32_t x285;
+  fiat_p256_uint1 x286;
+  fiat_p256_addcarryx_u32(&x285, &x286, x284, x267, x235);
+  uint32_t x287;
+  fiat_p256_uint1 x288;
+  fiat_p256_addcarryx_u32(&x287, &x288, x286, x269, x237);
+  uint32_t x289;
+  fiat_p256_uint1 x290;
+  fiat_p256_addcarryx_u32(&x289, &x290, x288, x271, x239);
+  uint32_t x291;
+  fiat_p256_uint1 x292;
+  fiat_p256_addcarryx_u32(&x291, &x292, x290, x273, x241);
+  uint32_t x293;
+  uint32_t x294;
+  fiat_p256_mulx_u32(&x293, &x294, x275, UINT32_C(0xffffffff));
+  uint32_t x295;
+  uint32_t x296;
+  fiat_p256_mulx_u32(&x295, &x296, x275, UINT32_C(0xffffffff));
+  uint32_t x297;
+  uint32_t x298;
+  fiat_p256_mulx_u32(&x297, &x298, x275, UINT32_C(0xffffffff));
+  uint32_t x299;
+  uint32_t x300;
+  fiat_p256_mulx_u32(&x299, &x300, x275, UINT32_C(0xffffffff));
+  uint32_t x301;
+  fiat_p256_uint1 x302;
+  fiat_p256_addcarryx_u32(&x301, &x302, 0x0, x297, x300);
+  uint32_t x303;
+  fiat_p256_uint1 x304;
+  fiat_p256_addcarryx_u32(&x303, &x304, x302, x295, x298);
+  uint32_t x305;
+  fiat_p256_uint1 x306;
+  fiat_p256_addcarryx_u32(&x305, &x306, x304, 0x0, x296);
+  uint32_t x307;
+  fiat_p256_uint1 x308;
+  fiat_p256_addcarryx_u32(&x307, &x308, 0x0, x299, x275);
+  uint32_t x309;
+  fiat_p256_uint1 x310;
+  fiat_p256_addcarryx_u32(&x309, &x310, x308, x301, x277);
+  uint32_t x311;
+  fiat_p256_uint1 x312;
+  fiat_p256_addcarryx_u32(&x311, &x312, x310, x303, x279);
+  uint32_t x313;
+  fiat_p256_uint1 x314;
+  fiat_p256_addcarryx_u32(&x313, &x314, x312, x305, x281);
+  uint32_t x315;
+  fiat_p256_uint1 x316;
+  fiat_p256_addcarryx_u32(&x315, &x316, x314, 0x0, x283);
+  uint32_t x317;
+  fiat_p256_uint1 x318;
+  fiat_p256_addcarryx_u32(&x317, &x318, x316, 0x0, x285);
+  uint32_t x319;
+  fiat_p256_uint1 x320;
+  fiat_p256_addcarryx_u32(&x319, &x320, x318, x275, x287);
+  uint32_t x321;
+  fiat_p256_uint1 x322;
+  fiat_p256_addcarryx_u32(&x321, &x322, x320, x293, x289);
+  uint32_t x323;
+  fiat_p256_uint1 x324;
+  fiat_p256_addcarryx_u32(&x323, &x324, x322, x294, x291);
+  uint32_t x325;
+  fiat_p256_uint1 x326;
+  fiat_p256_addcarryx_u32(&x325, &x326, x324, 0x0, x292);
+  uint32_t x327;
+  uint32_t x328;
+  fiat_p256_mulx_u32(&x327, &x328, x4, (arg1[7]));
+  uint32_t x329;
+  uint32_t x330;
+  fiat_p256_mulx_u32(&x329, &x330, x4, (arg1[6]));
+  uint32_t x331;
+  uint32_t x332;
+  fiat_p256_mulx_u32(&x331, &x332, x4, (arg1[5]));
+  uint32_t x333;
+  uint32_t x334;
+  fiat_p256_mulx_u32(&x333, &x334, x4, (arg1[4]));
+  uint32_t x335;
+  uint32_t x336;
+  fiat_p256_mulx_u32(&x335, &x336, x4, (arg1[3]));
+  uint32_t x337;
+  uint32_t x338;
+  fiat_p256_mulx_u32(&x337, &x338, x4, (arg1[2]));
+  uint32_t x339;
+  uint32_t x340;
+  fiat_p256_mulx_u32(&x339, &x340, x4, (arg1[1]));
+  uint32_t x341;
+  uint32_t x342;
+  fiat_p256_mulx_u32(&x341, &x342, x4, (arg1[0]));
+  uint32_t x343;
+  fiat_p256_uint1 x344;
+  fiat_p256_addcarryx_u32(&x343, &x344, 0x0, x339, x342);
+  uint32_t x345;
+  fiat_p256_uint1 x346;
+  fiat_p256_addcarryx_u32(&x345, &x346, x344, x337, x340);
+  uint32_t x347;
+  fiat_p256_uint1 x348;
+  fiat_p256_addcarryx_u32(&x347, &x348, x346, x335, x338);
+  uint32_t x349;
+  fiat_p256_uint1 x350;
+  fiat_p256_addcarryx_u32(&x349, &x350, x348, x333, x336);
+  uint32_t x351;
+  fiat_p256_uint1 x352;
+  fiat_p256_addcarryx_u32(&x351, &x352, x350, x331, x334);
+  uint32_t x353;
+  fiat_p256_uint1 x354;
+  fiat_p256_addcarryx_u32(&x353, &x354, x352, x329, x332);
+  uint32_t x355;
+  fiat_p256_uint1 x356;
+  fiat_p256_addcarryx_u32(&x355, &x356, x354, x327, x330);
+  uint32_t x357;
+  fiat_p256_uint1 x358;
+  fiat_p256_addcarryx_u32(&x357, &x358, x356, 0x0, x328);
+  uint32_t x359;
+  fiat_p256_uint1 x360;
+  fiat_p256_addcarryx_u32(&x359, &x360, 0x0, x341, x309);
+  uint32_t x361;
+  fiat_p256_uint1 x362;
+  fiat_p256_addcarryx_u32(&x361, &x362, x360, x343, x311);
+  uint32_t x363;
+  fiat_p256_uint1 x364;
+  fiat_p256_addcarryx_u32(&x363, &x364, x362, x345, x313);
+  uint32_t x365;
+  fiat_p256_uint1 x366;
+  fiat_p256_addcarryx_u32(&x365, &x366, x364, x347, x315);
+  uint32_t x367;
+  fiat_p256_uint1 x368;
+  fiat_p256_addcarryx_u32(&x367, &x368, x366, x349, x317);
+  uint32_t x369;
+  fiat_p256_uint1 x370;
+  fiat_p256_addcarryx_u32(&x369, &x370, x368, x351, x319);
+  uint32_t x371;
+  fiat_p256_uint1 x372;
+  fiat_p256_addcarryx_u32(&x371, &x372, x370, x353, x321);
+  uint32_t x373;
+  fiat_p256_uint1 x374;
+  fiat_p256_addcarryx_u32(&x373, &x374, x372, x355, x323);
+  uint32_t x375;
+  fiat_p256_uint1 x376;
+  fiat_p256_addcarryx_u32(&x375, &x376, x374, x357, x325);
+  uint32_t x377;
+  uint32_t x378;
+  fiat_p256_mulx_u32(&x377, &x378, x359, UINT32_C(0xffffffff));
+  uint32_t x379;
+  uint32_t x380;
+  fiat_p256_mulx_u32(&x379, &x380, x359, UINT32_C(0xffffffff));
+  uint32_t x381;
+  uint32_t x382;
+  fiat_p256_mulx_u32(&x381, &x382, x359, UINT32_C(0xffffffff));
+  uint32_t x383;
+  uint32_t x384;
+  fiat_p256_mulx_u32(&x383, &x384, x359, UINT32_C(0xffffffff));
+  uint32_t x385;
+  fiat_p256_uint1 x386;
+  fiat_p256_addcarryx_u32(&x385, &x386, 0x0, x381, x384);
+  uint32_t x387;
+  fiat_p256_uint1 x388;
+  fiat_p256_addcarryx_u32(&x387, &x388, x386, x379, x382);
+  uint32_t x389;
+  fiat_p256_uint1 x390;
+  fiat_p256_addcarryx_u32(&x389, &x390, x388, 0x0, x380);
+  uint32_t x391;
+  fiat_p256_uint1 x392;
+  fiat_p256_addcarryx_u32(&x391, &x392, 0x0, x383, x359);
+  uint32_t x393;
+  fiat_p256_uint1 x394;
+  fiat_p256_addcarryx_u32(&x393, &x394, x392, x385, x361);
+  uint32_t x395;
+  fiat_p256_uint1 x396;
+  fiat_p256_addcarryx_u32(&x395, &x396, x394, x387, x363);
+  uint32_t x397;
+  fiat_p256_uint1 x398;
+  fiat_p256_addcarryx_u32(&x397, &x398, x396, x389, x365);
+  uint32_t x399;
+  fiat_p256_uint1 x400;
+  fiat_p256_addcarryx_u32(&x399, &x400, x398, 0x0, x367);
+  uint32_t x401;
+  fiat_p256_uint1 x402;
+  fiat_p256_addcarryx_u32(&x401, &x402, x400, 0x0, x369);
+  uint32_t x403;
+  fiat_p256_uint1 x404;
+  fiat_p256_addcarryx_u32(&x403, &x404, x402, x359, x371);
+  uint32_t x405;
+  fiat_p256_uint1 x406;
+  fiat_p256_addcarryx_u32(&x405, &x406, x404, x377, x373);
+  uint32_t x407;
+  fiat_p256_uint1 x408;
+  fiat_p256_addcarryx_u32(&x407, &x408, x406, x378, x375);
+  uint32_t x409;
+  fiat_p256_uint1 x410;
+  fiat_p256_addcarryx_u32(&x409, &x410, x408, 0x0, x376);
+  uint32_t x411;
+  uint32_t x412;
+  fiat_p256_mulx_u32(&x411, &x412, x5, (arg1[7]));
+  uint32_t x413;
+  uint32_t x414;
+  fiat_p256_mulx_u32(&x413, &x414, x5, (arg1[6]));
+  uint32_t x415;
+  uint32_t x416;
+  fiat_p256_mulx_u32(&x415, &x416, x5, (arg1[5]));
+  uint32_t x417;
+  uint32_t x418;
+  fiat_p256_mulx_u32(&x417, &x418, x5, (arg1[4]));
+  uint32_t x419;
+  uint32_t x420;
+  fiat_p256_mulx_u32(&x419, &x420, x5, (arg1[3]));
+  uint32_t x421;
+  uint32_t x422;
+  fiat_p256_mulx_u32(&x421, &x422, x5, (arg1[2]));
+  uint32_t x423;
+  uint32_t x424;
+  fiat_p256_mulx_u32(&x423, &x424, x5, (arg1[1]));
+  uint32_t x425;
+  uint32_t x426;
+  fiat_p256_mulx_u32(&x425, &x426, x5, (arg1[0]));
+  uint32_t x427;
+  fiat_p256_uint1 x428;
+  fiat_p256_addcarryx_u32(&x427, &x428, 0x0, x423, x426);
+  uint32_t x429;
+  fiat_p256_uint1 x430;
+  fiat_p256_addcarryx_u32(&x429, &x430, x428, x421, x424);
+  uint32_t x431;
+  fiat_p256_uint1 x432;
+  fiat_p256_addcarryx_u32(&x431, &x432, x430, x419, x422);
+  uint32_t x433;
+  fiat_p256_uint1 x434;
+  fiat_p256_addcarryx_u32(&x433, &x434, x432, x417, x420);
+  uint32_t x435;
+  fiat_p256_uint1 x436;
+  fiat_p256_addcarryx_u32(&x435, &x436, x434, x415, x418);
+  uint32_t x437;
+  fiat_p256_uint1 x438;
+  fiat_p256_addcarryx_u32(&x437, &x438, x436, x413, x416);
+  uint32_t x439;
+  fiat_p256_uint1 x440;
+  fiat_p256_addcarryx_u32(&x439, &x440, x438, x411, x414);
+  uint32_t x441;
+  fiat_p256_uint1 x442;
+  fiat_p256_addcarryx_u32(&x441, &x442, x440, 0x0, x412);
+  uint32_t x443;
+  fiat_p256_uint1 x444;
+  fiat_p256_addcarryx_u32(&x443, &x444, 0x0, x425, x393);
+  uint32_t x445;
+  fiat_p256_uint1 x446;
+  fiat_p256_addcarryx_u32(&x445, &x446, x444, x427, x395);
+  uint32_t x447;
+  fiat_p256_uint1 x448;
+  fiat_p256_addcarryx_u32(&x447, &x448, x446, x429, x397);
+  uint32_t x449;
+  fiat_p256_uint1 x450;
+  fiat_p256_addcarryx_u32(&x449, &x450, x448, x431, x399);
+  uint32_t x451;
+  fiat_p256_uint1 x452;
+  fiat_p256_addcarryx_u32(&x451, &x452, x450, x433, x401);
+  uint32_t x453;
+  fiat_p256_uint1 x454;
+  fiat_p256_addcarryx_u32(&x453, &x454, x452, x435, x403);
+  uint32_t x455;
+  fiat_p256_uint1 x456;
+  fiat_p256_addcarryx_u32(&x455, &x456, x454, x437, x405);
+  uint32_t x457;
+  fiat_p256_uint1 x458;
+  fiat_p256_addcarryx_u32(&x457, &x458, x456, x439, x407);
+  uint32_t x459;
+  fiat_p256_uint1 x460;
+  fiat_p256_addcarryx_u32(&x459, &x460, x458, x441, x409);
+  uint32_t x461;
+  uint32_t x462;
+  fiat_p256_mulx_u32(&x461, &x462, x443, UINT32_C(0xffffffff));
+  uint32_t x463;
+  uint32_t x464;
+  fiat_p256_mulx_u32(&x463, &x464, x443, UINT32_C(0xffffffff));
+  uint32_t x465;
+  uint32_t x466;
+  fiat_p256_mulx_u32(&x465, &x466, x443, UINT32_C(0xffffffff));
+  uint32_t x467;
+  uint32_t x468;
+  fiat_p256_mulx_u32(&x467, &x468, x443, UINT32_C(0xffffffff));
+  uint32_t x469;
+  fiat_p256_uint1 x470;
+  fiat_p256_addcarryx_u32(&x469, &x470, 0x0, x465, x468);
+  uint32_t x471;
+  fiat_p256_uint1 x472;
+  fiat_p256_addcarryx_u32(&x471, &x472, x470, x463, x466);
+  uint32_t x473;
+  fiat_p256_uint1 x474;
+  fiat_p256_addcarryx_u32(&x473, &x474, x472, 0x0, x464);
+  uint32_t x475;
+  fiat_p256_uint1 x476;
+  fiat_p256_addcarryx_u32(&x475, &x476, 0x0, x467, x443);
+  uint32_t x477;
+  fiat_p256_uint1 x478;
+  fiat_p256_addcarryx_u32(&x477, &x478, x476, x469, x445);
+  uint32_t x479;
+  fiat_p256_uint1 x480;
+  fiat_p256_addcarryx_u32(&x479, &x480, x478, x471, x447);
+  uint32_t x481;
+  fiat_p256_uint1 x482;
+  fiat_p256_addcarryx_u32(&x481, &x482, x480, x473, x449);
+  uint32_t x483;
+  fiat_p256_uint1 x484;
+  fiat_p256_addcarryx_u32(&x483, &x484, x482, 0x0, x451);
+  uint32_t x485;
+  fiat_p256_uint1 x486;
+  fiat_p256_addcarryx_u32(&x485, &x486, x484, 0x0, x453);
+  uint32_t x487;
+  fiat_p256_uint1 x488;
+  fiat_p256_addcarryx_u32(&x487, &x488, x486, x443, x455);
+  uint32_t x489;
+  fiat_p256_uint1 x490;
+  fiat_p256_addcarryx_u32(&x489, &x490, x488, x461, x457);
+  uint32_t x491;
+  fiat_p256_uint1 x492;
+  fiat_p256_addcarryx_u32(&x491, &x492, x490, x462, x459);
+  uint32_t x493;
+  fiat_p256_uint1 x494;
+  fiat_p256_addcarryx_u32(&x493, &x494, x492, 0x0, x460);
+  uint32_t x495;
+  uint32_t x496;
+  fiat_p256_mulx_u32(&x495, &x496, x6, (arg1[7]));
+  uint32_t x497;
+  uint32_t x498;
+  fiat_p256_mulx_u32(&x497, &x498, x6, (arg1[6]));
+  uint32_t x499;
+  uint32_t x500;
+  fiat_p256_mulx_u32(&x499, &x500, x6, (arg1[5]));
+  uint32_t x501;
+  uint32_t x502;
+  fiat_p256_mulx_u32(&x501, &x502, x6, (arg1[4]));
+  uint32_t x503;
+  uint32_t x504;
+  fiat_p256_mulx_u32(&x503, &x504, x6, (arg1[3]));
+  uint32_t x505;
+  uint32_t x506;
+  fiat_p256_mulx_u32(&x505, &x506, x6, (arg1[2]));
+  uint32_t x507;
+  uint32_t x508;
+  fiat_p256_mulx_u32(&x507, &x508, x6, (arg1[1]));
+  uint32_t x509;
+  uint32_t x510;
+  fiat_p256_mulx_u32(&x509, &x510, x6, (arg1[0]));
+  uint32_t x511;
+  fiat_p256_uint1 x512;
+  fiat_p256_addcarryx_u32(&x511, &x512, 0x0, x507, x510);
+  uint32_t x513;
+  fiat_p256_uint1 x514;
+  fiat_p256_addcarryx_u32(&x513, &x514, x512, x505, x508);
+  uint32_t x515;
+  fiat_p256_uint1 x516;
+  fiat_p256_addcarryx_u32(&x515, &x516, x514, x503, x506);
+  uint32_t x517;
+  fiat_p256_uint1 x518;
+  fiat_p256_addcarryx_u32(&x517, &x518, x516, x501, x504);
+  uint32_t x519;
+  fiat_p256_uint1 x520;
+  fiat_p256_addcarryx_u32(&x519, &x520, x518, x499, x502);
+  uint32_t x521;
+  fiat_p256_uint1 x522;
+  fiat_p256_addcarryx_u32(&x521, &x522, x520, x497, x500);
+  uint32_t x523;
+  fiat_p256_uint1 x524;
+  fiat_p256_addcarryx_u32(&x523, &x524, x522, x495, x498);
+  uint32_t x525;
+  fiat_p256_uint1 x526;
+  fiat_p256_addcarryx_u32(&x525, &x526, x524, 0x0, x496);
+  uint32_t x527;
+  fiat_p256_uint1 x528;
+  fiat_p256_addcarryx_u32(&x527, &x528, 0x0, x509, x477);
+  uint32_t x529;
+  fiat_p256_uint1 x530;
+  fiat_p256_addcarryx_u32(&x529, &x530, x528, x511, x479);
+  uint32_t x531;
+  fiat_p256_uint1 x532;
+  fiat_p256_addcarryx_u32(&x531, &x532, x530, x513, x481);
+  uint32_t x533;
+  fiat_p256_uint1 x534;
+  fiat_p256_addcarryx_u32(&x533, &x534, x532, x515, x483);
+  uint32_t x535;
+  fiat_p256_uint1 x536;
+  fiat_p256_addcarryx_u32(&x535, &x536, x534, x517, x485);
+  uint32_t x537;
+  fiat_p256_uint1 x538;
+  fiat_p256_addcarryx_u32(&x537, &x538, x536, x519, x487);
+  uint32_t x539;
+  fiat_p256_uint1 x540;
+  fiat_p256_addcarryx_u32(&x539, &x540, x538, x521, x489);
+  uint32_t x541;
+  fiat_p256_uint1 x542;
+  fiat_p256_addcarryx_u32(&x541, &x542, x540, x523, x491);
+  uint32_t x543;
+  fiat_p256_uint1 x544;
+  fiat_p256_addcarryx_u32(&x543, &x544, x542, x525, x493);
+  uint32_t x545;
+  uint32_t x546;
+  fiat_p256_mulx_u32(&x545, &x546, x527, UINT32_C(0xffffffff));
+  uint32_t x547;
+  uint32_t x548;
+  fiat_p256_mulx_u32(&x547, &x548, x527, UINT32_C(0xffffffff));
+  uint32_t x549;
+  uint32_t x550;
+  fiat_p256_mulx_u32(&x549, &x550, x527, UINT32_C(0xffffffff));
+  uint32_t x551;
+  uint32_t x552;
+  fiat_p256_mulx_u32(&x551, &x552, x527, UINT32_C(0xffffffff));
+  uint32_t x553;
+  fiat_p256_uint1 x554;
+  fiat_p256_addcarryx_u32(&x553, &x554, 0x0, x549, x552);
+  uint32_t x555;
+  fiat_p256_uint1 x556;
+  fiat_p256_addcarryx_u32(&x555, &x556, x554, x547, x550);
+  uint32_t x557;
+  fiat_p256_uint1 x558;
+  fiat_p256_addcarryx_u32(&x557, &x558, x556, 0x0, x548);
+  uint32_t x559;
+  fiat_p256_uint1 x560;
+  fiat_p256_addcarryx_u32(&x559, &x560, 0x0, x551, x527);
+  uint32_t x561;
+  fiat_p256_uint1 x562;
+  fiat_p256_addcarryx_u32(&x561, &x562, x560, x553, x529);
+  uint32_t x563;
+  fiat_p256_uint1 x564;
+  fiat_p256_addcarryx_u32(&x563, &x564, x562, x555, x531);
+  uint32_t x565;
+  fiat_p256_uint1 x566;
+  fiat_p256_addcarryx_u32(&x565, &x566, x564, x557, x533);
+  uint32_t x567;
+  fiat_p256_uint1 x568;
+  fiat_p256_addcarryx_u32(&x567, &x568, x566, 0x0, x535);
+  uint32_t x569;
+  fiat_p256_uint1 x570;
+  fiat_p256_addcarryx_u32(&x569, &x570, x568, 0x0, x537);
+  uint32_t x571;
+  fiat_p256_uint1 x572;
+  fiat_p256_addcarryx_u32(&x571, &x572, x570, x527, x539);
+  uint32_t x573;
+  fiat_p256_uint1 x574;
+  fiat_p256_addcarryx_u32(&x573, &x574, x572, x545, x541);
+  uint32_t x575;
+  fiat_p256_uint1 x576;
+  fiat_p256_addcarryx_u32(&x575, &x576, x574, x546, x543);
+  uint32_t x577;
+  fiat_p256_uint1 x578;
+  fiat_p256_addcarryx_u32(&x577, &x578, x576, 0x0, x544);
+  uint32_t x579;
+  uint32_t x580;
+  fiat_p256_mulx_u32(&x579, &x580, x7, (arg1[7]));
+  uint32_t x581;
+  uint32_t x582;
+  fiat_p256_mulx_u32(&x581, &x582, x7, (arg1[6]));
+  uint32_t x583;
+  uint32_t x584;
+  fiat_p256_mulx_u32(&x583, &x584, x7, (arg1[5]));
+  uint32_t x585;
+  uint32_t x586;
+  fiat_p256_mulx_u32(&x585, &x586, x7, (arg1[4]));
+  uint32_t x587;
+  uint32_t x588;
+  fiat_p256_mulx_u32(&x587, &x588, x7, (arg1[3]));
+  uint32_t x589;
+  uint32_t x590;
+  fiat_p256_mulx_u32(&x589, &x590, x7, (arg1[2]));
+  uint32_t x591;
+  uint32_t x592;
+  fiat_p256_mulx_u32(&x591, &x592, x7, (arg1[1]));
+  uint32_t x593;
+  uint32_t x594;
+  fiat_p256_mulx_u32(&x593, &x594, x7, (arg1[0]));
+  uint32_t x595;
+  fiat_p256_uint1 x596;
+  fiat_p256_addcarryx_u32(&x595, &x596, 0x0, x591, x594);
+  uint32_t x597;
+  fiat_p256_uint1 x598;
+  fiat_p256_addcarryx_u32(&x597, &x598, x596, x589, x592);
+  uint32_t x599;
+  fiat_p256_uint1 x600;
+  fiat_p256_addcarryx_u32(&x599, &x600, x598, x587, x590);
+  uint32_t x601;
+  fiat_p256_uint1 x602;
+  fiat_p256_addcarryx_u32(&x601, &x602, x600, x585, x588);
+  uint32_t x603;
+  fiat_p256_uint1 x604;
+  fiat_p256_addcarryx_u32(&x603, &x604, x602, x583, x586);
+  uint32_t x605;
+  fiat_p256_uint1 x606;
+  fiat_p256_addcarryx_u32(&x605, &x606, x604, x581, x584);
+  uint32_t x607;
+  fiat_p256_uint1 x608;
+  fiat_p256_addcarryx_u32(&x607, &x608, x606, x579, x582);
+  uint32_t x609;
+  fiat_p256_uint1 x610;
+  fiat_p256_addcarryx_u32(&x609, &x610, x608, 0x0, x580);
+  uint32_t x611;
+  fiat_p256_uint1 x612;
+  fiat_p256_addcarryx_u32(&x611, &x612, 0x0, x593, x561);
+  uint32_t x613;
+  fiat_p256_uint1 x614;
+  fiat_p256_addcarryx_u32(&x613, &x614, x612, x595, x563);
+  uint32_t x615;
+  fiat_p256_uint1 x616;
+  fiat_p256_addcarryx_u32(&x615, &x616, x614, x597, x565);
+  uint32_t x617;
+  fiat_p256_uint1 x618;
+  fiat_p256_addcarryx_u32(&x617, &x618, x616, x599, x567);
+  uint32_t x619;
+  fiat_p256_uint1 x620;
+  fiat_p256_addcarryx_u32(&x619, &x620, x618, x601, x569);
+  uint32_t x621;
+  fiat_p256_uint1 x622;
+  fiat_p256_addcarryx_u32(&x621, &x622, x620, x603, x571);
+  uint32_t x623;
+  fiat_p256_uint1 x624;
+  fiat_p256_addcarryx_u32(&x623, &x624, x622, x605, x573);
+  uint32_t x625;
+  fiat_p256_uint1 x626;
+  fiat_p256_addcarryx_u32(&x625, &x626, x624, x607, x575);
+  uint32_t x627;
+  fiat_p256_uint1 x628;
+  fiat_p256_addcarryx_u32(&x627, &x628, x626, x609, x577);
+  uint32_t x629;
+  uint32_t x630;
+  fiat_p256_mulx_u32(&x629, &x630, x611, UINT32_C(0xffffffff));
+  uint32_t x631;
+  uint32_t x632;
+  fiat_p256_mulx_u32(&x631, &x632, x611, UINT32_C(0xffffffff));
+  uint32_t x633;
+  uint32_t x634;
+  fiat_p256_mulx_u32(&x633, &x634, x611, UINT32_C(0xffffffff));
+  uint32_t x635;
+  uint32_t x636;
+  fiat_p256_mulx_u32(&x635, &x636, x611, UINT32_C(0xffffffff));
+  uint32_t x637;
+  fiat_p256_uint1 x638;
+  fiat_p256_addcarryx_u32(&x637, &x638, 0x0, x633, x636);
+  uint32_t x639;
+  fiat_p256_uint1 x640;
+  fiat_p256_addcarryx_u32(&x639, &x640, x638, x631, x634);
+  uint32_t x641;
+  fiat_p256_uint1 x642;
+  fiat_p256_addcarryx_u32(&x641, &x642, x640, 0x0, x632);
+  uint32_t x643;
+  fiat_p256_uint1 x644;
+  fiat_p256_addcarryx_u32(&x643, &x644, 0x0, x635, x611);
+  uint32_t x645;
+  fiat_p256_uint1 x646;
+  fiat_p256_addcarryx_u32(&x645, &x646, x644, x637, x613);
+  uint32_t x647;
+  fiat_p256_uint1 x648;
+  fiat_p256_addcarryx_u32(&x647, &x648, x646, x639, x615);
+  uint32_t x649;
+  fiat_p256_uint1 x650;
+  fiat_p256_addcarryx_u32(&x649, &x650, x648, x641, x617);
+  uint32_t x651;
+  fiat_p256_uint1 x652;
+  fiat_p256_addcarryx_u32(&x651, &x652, x650, 0x0, x619);
+  uint32_t x653;
+  fiat_p256_uint1 x654;
+  fiat_p256_addcarryx_u32(&x653, &x654, x652, 0x0, x621);
+  uint32_t x655;
+  fiat_p256_uint1 x656;
+  fiat_p256_addcarryx_u32(&x655, &x656, x654, x611, x623);
+  uint32_t x657;
+  fiat_p256_uint1 x658;
+  fiat_p256_addcarryx_u32(&x657, &x658, x656, x629, x625);
+  uint32_t x659;
+  fiat_p256_uint1 x660;
+  fiat_p256_addcarryx_u32(&x659, &x660, x658, x630, x627);
+  uint32_t x661;
+  fiat_p256_uint1 x662;
+  fiat_p256_addcarryx_u32(&x661, &x662, x660, 0x0, x628);
+  uint32_t x663;
+  fiat_p256_uint1 x664;
+  fiat_p256_subborrowx_u32(&x663, &x664, 0x0, x645, UINT32_C(0xffffffff));
+  uint32_t x665;
+  fiat_p256_uint1 x666;
+  fiat_p256_subborrowx_u32(&x665, &x666, x664, x647, UINT32_C(0xffffffff));
+  uint32_t x667;
+  fiat_p256_uint1 x668;
+  fiat_p256_subborrowx_u32(&x667, &x668, x666, x649, UINT32_C(0xffffffff));
+  uint32_t x669;
+  fiat_p256_uint1 x670;
+  fiat_p256_subborrowx_u32(&x669, &x670, x668, x651, 0x0);
+  uint32_t x671;
+  fiat_p256_uint1 x672;
+  fiat_p256_subborrowx_u32(&x671, &x672, x670, x653, 0x0);
+  uint32_t x673;
+  fiat_p256_uint1 x674;
+  fiat_p256_subborrowx_u32(&x673, &x674, x672, x655, 0x0);
+  uint32_t x675;
+  fiat_p256_uint1 x676;
+  fiat_p256_subborrowx_u32(&x675, &x676, x674, x657, 0x1);
+  uint32_t x677;
+  fiat_p256_uint1 x678;
+  fiat_p256_subborrowx_u32(&x677, &x678, x676, x659, UINT32_C(0xffffffff));
+  uint32_t x679;
+  fiat_p256_uint1 x680;
+  fiat_p256_subborrowx_u32(&x679, &x680, x678, x661, 0x0);
+  uint32_t x681;
+  fiat_p256_cmovznz_u32(&x681, x680, x663, x645);
+  uint32_t x682;
+  fiat_p256_cmovznz_u32(&x682, x680, x665, x647);
+  uint32_t x683;
+  fiat_p256_cmovznz_u32(&x683, x680, x667, x649);
+  uint32_t x684;
+  fiat_p256_cmovznz_u32(&x684, x680, x669, x651);
+  uint32_t x685;
+  fiat_p256_cmovznz_u32(&x685, x680, x671, x653);
+  uint32_t x686;
+  fiat_p256_cmovznz_u32(&x686, x680, x673, x655);
+  uint32_t x687;
+  fiat_p256_cmovznz_u32(&x687, x680, x675, x657);
+  uint32_t x688;
+  fiat_p256_cmovznz_u32(&x688, x680, x677, x659);
+  out1[0] = x681;
+  out1[1] = x682;
+  out1[2] = x683;
+  out1[3] = x684;
+  out1[4] = x685;
+  out1[5] = x686;
+  out1[6] = x687;
+  out1[7] = x688;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_add(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_addcarryx_u32(&x1, &x2, 0x0, (arg2[0]), (arg1[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_addcarryx_u32(&x3, &x4, x2, (arg2[1]), (arg1[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_addcarryx_u32(&x5, &x6, x4, (arg2[2]), (arg1[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_addcarryx_u32(&x7, &x8, x6, (arg2[3]), (arg1[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_addcarryx_u32(&x9, &x10, x8, (arg2[4]), (arg1[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_addcarryx_u32(&x11, &x12, x10, (arg2[5]), (arg1[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u32(&x13, &x14, x12, (arg2[6]), (arg1[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u32(&x15, &x16, x14, (arg2[7]), (arg1[7]));
+  uint32_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_subborrowx_u32(&x17, &x18, 0x0, x1, UINT32_C(0xffffffff));
+  uint32_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_subborrowx_u32(&x19, &x20, x18, x3, UINT32_C(0xffffffff));
+  uint32_t x21;
+  fiat_p256_uint1 x22;
+  fiat_p256_subborrowx_u32(&x21, &x22, x20, x5, UINT32_C(0xffffffff));
+  uint32_t x23;
+  fiat_p256_uint1 x24;
+  fiat_p256_subborrowx_u32(&x23, &x24, x22, x7, 0x0);
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_subborrowx_u32(&x25, &x26, x24, x9, 0x0);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_subborrowx_u32(&x27, &x28, x26, x11, 0x0);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_subborrowx_u32(&x29, &x30, x28, x13, 0x1);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_subborrowx_u32(&x31, &x32, x30, x15, UINT32_C(0xffffffff));
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_subborrowx_u32(&x33, &x34, x32, x16, 0x0);
+  uint32_t x35;
+  fiat_p256_cmovznz_u32(&x35, x34, x17, x1);
+  uint32_t x36;
+  fiat_p256_cmovznz_u32(&x36, x34, x19, x3);
+  uint32_t x37;
+  fiat_p256_cmovznz_u32(&x37, x34, x21, x5);
+  uint32_t x38;
+  fiat_p256_cmovznz_u32(&x38, x34, x23, x7);
+  uint32_t x39;
+  fiat_p256_cmovznz_u32(&x39, x34, x25, x9);
+  uint32_t x40;
+  fiat_p256_cmovznz_u32(&x40, x34, x27, x11);
+  uint32_t x41;
+  fiat_p256_cmovznz_u32(&x41, x34, x29, x13);
+  uint32_t x42;
+  fiat_p256_cmovznz_u32(&x42, x34, x31, x15);
+  out1[0] = x35;
+  out1[1] = x36;
+  out1[2] = x37;
+  out1[3] = x38;
+  out1[4] = x39;
+  out1[5] = x40;
+  out1[6] = x41;
+  out1[7] = x42;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_sub(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u32(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u32(&x3, &x4, x2, (arg1[1]), (arg2[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u32(&x5, &x6, x4, (arg1[2]), (arg2[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u32(&x7, &x8, x6, (arg1[3]), (arg2[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u32(&x9, &x10, x8, (arg1[4]), (arg2[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u32(&x11, &x12, x10, (arg1[5]), (arg2[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u32(&x13, &x14, x12, (arg1[6]), (arg2[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u32(&x15, &x16, x14, (arg1[7]), (arg2[7]));
+  uint32_t x17;
+  fiat_p256_cmovznz_u32(&x17, x16, 0x0, UINT32_C(0xffffffff));
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, 0x0, (x17 & UINT32_C(0xffffffff)), x1);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x19, (x17 & UINT32_C(0xffffffff)), x3);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x21, (x17 & UINT32_C(0xffffffff)), x5);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, x23, 0x0, x7);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x9);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x11);
+  uint32_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u32(&x30, &x31, x29, (fiat_p256_uint1)(x17 & 0x1), x13);
+  uint32_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u32(&x32, &x33, x31, (x17 & UINT32_C(0xffffffff)), x15);
+  out1[0] = x18;
+  out1[1] = x20;
+  out1[2] = x22;
+  out1[3] = x24;
+  out1[4] = x26;
+  out1[5] = x28;
+  out1[6] = x30;
+  out1[7] = x32;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_opp(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u32(&x1, &x2, 0x0, 0x0, (arg1[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u32(&x3, &x4, x2, 0x0, (arg1[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u32(&x5, &x6, x4, 0x0, (arg1[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u32(&x7, &x8, x6, 0x0, (arg1[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u32(&x9, &x10, x8, 0x0, (arg1[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u32(&x11, &x12, x10, 0x0, (arg1[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u32(&x13, &x14, x12, 0x0, (arg1[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u32(&x15, &x16, x14, 0x0, (arg1[7]));
+  uint32_t x17;
+  fiat_p256_cmovznz_u32(&x17, x16, 0x0, UINT32_C(0xffffffff));
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, 0x0, (x17 & UINT32_C(0xffffffff)), x1);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x19, (x17 & UINT32_C(0xffffffff)), x3);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x21, (x17 & UINT32_C(0xffffffff)), x5);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, x23, 0x0, x7);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x9);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x11);
+  uint32_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u32(&x30, &x31, x29, (fiat_p256_uint1)(x17 & 0x1), x13);
+  uint32_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u32(&x32, &x33, x31, (x17 & UINT32_C(0xffffffff)), x15);
+  out1[0] = x18;
+  out1[1] = x20;
+  out1[2] = x22;
+  out1[3] = x24;
+  out1[4] = x26;
+  out1[5] = x28;
+  out1[6] = x30;
+  out1[7] = x32;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_from_montgomery(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[0]);
+  uint32_t x2;
+  uint32_t x3;
+  fiat_p256_mulx_u32(&x2, &x3, x1, UINT32_C(0xffffffff));
+  uint32_t x4;
+  uint32_t x5;
+  fiat_p256_mulx_u32(&x4, &x5, x1, UINT32_C(0xffffffff));
+  uint32_t x6;
+  uint32_t x7;
+  fiat_p256_mulx_u32(&x6, &x7, x1, UINT32_C(0xffffffff));
+  uint32_t x8;
+  uint32_t x9;
+  fiat_p256_mulx_u32(&x8, &x9, x1, UINT32_C(0xffffffff));
+  uint32_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u32(&x10, &x11, 0x0, x6, x9);
+  uint32_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u32(&x12, &x13, x11, x4, x7);
+  uint32_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u32(&x14, &x15, 0x0, x8, x1);
+  uint32_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u32(&x16, &x17, x15, x10, 0x0);
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, x17, x12, 0x0);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x13, 0x0, x5);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x19, x20, 0x0);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, 0x0, (arg1[1]), x16);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x18);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x22);
+  uint32_t x30;
+  uint32_t x31;
+  fiat_p256_mulx_u32(&x30, &x31, x24, UINT32_C(0xffffffff));
+  uint32_t x32;
+  uint32_t x33;
+  fiat_p256_mulx_u32(&x32, &x33, x24, UINT32_C(0xffffffff));
+  uint32_t x34;
+  uint32_t x35;
+  fiat_p256_mulx_u32(&x34, &x35, x24, UINT32_C(0xffffffff));
+  uint32_t x36;
+  uint32_t x37;
+  fiat_p256_mulx_u32(&x36, &x37, x24, UINT32_C(0xffffffff));
+  uint32_t x38;
+  fiat_p256_uint1 x39;
+  fiat_p256_addcarryx_u32(&x38, &x39, 0x0, x34, x37);
+  uint32_t x40;
+  fiat_p256_uint1 x41;
+  fiat_p256_addcarryx_u32(&x40, &x41, x39, x32, x35);
+  uint32_t x42;
+  fiat_p256_uint1 x43;
+  fiat_p256_addcarryx_u32(&x42, &x43, 0x0, x36, x24);
+  uint32_t x44;
+  fiat_p256_uint1 x45;
+  fiat_p256_addcarryx_u32(&x44, &x45, x43, x38, x26);
+  uint32_t x46;
+  fiat_p256_uint1 x47;
+  fiat_p256_addcarryx_u32(&x46, &x47, x45, x40, x28);
+  uint32_t x48;
+  fiat_p256_uint1 x49;
+  fiat_p256_addcarryx_u32(&x48, &x49, x23, 0x0, 0x0);
+  uint32_t x50;
+  fiat_p256_uint1 x51;
+  fiat_p256_addcarryx_u32(&x50, &x51, x29, 0x0, (fiat_p256_uint1)x48);
+  uint32_t x52;
+  fiat_p256_uint1 x53;
+  fiat_p256_addcarryx_u32(&x52, &x53, x41, 0x0, x33);
+  uint32_t x54;
+  fiat_p256_uint1 x55;
+  fiat_p256_addcarryx_u32(&x54, &x55, x47, x52, x50);
+  uint32_t x56;
+  fiat_p256_uint1 x57;
+  fiat_p256_addcarryx_u32(&x56, &x57, 0x0, x24, x2);
+  uint32_t x58;
+  fiat_p256_uint1 x59;
+  fiat_p256_addcarryx_u32(&x58, &x59, x57, x30, x3);
+  uint32_t x60;
+  fiat_p256_uint1 x61;
+  fiat_p256_addcarryx_u32(&x60, &x61, 0x0, (arg1[2]), x44);
+  uint32_t x62;
+  fiat_p256_uint1 x63;
+  fiat_p256_addcarryx_u32(&x62, &x63, x61, 0x0, x46);
+  uint32_t x64;
+  fiat_p256_uint1 x65;
+  fiat_p256_addcarryx_u32(&x64, &x65, x63, 0x0, x54);
+  uint32_t x66;
+  uint32_t x67;
+  fiat_p256_mulx_u32(&x66, &x67, x60, UINT32_C(0xffffffff));
+  uint32_t x68;
+  uint32_t x69;
+  fiat_p256_mulx_u32(&x68, &x69, x60, UINT32_C(0xffffffff));
+  uint32_t x70;
+  uint32_t x71;
+  fiat_p256_mulx_u32(&x70, &x71, x60, UINT32_C(0xffffffff));
+  uint32_t x72;
+  uint32_t x73;
+  fiat_p256_mulx_u32(&x72, &x73, x60, UINT32_C(0xffffffff));
+  uint32_t x74;
+  fiat_p256_uint1 x75;
+  fiat_p256_addcarryx_u32(&x74, &x75, 0x0, x70, x73);
+  uint32_t x76;
+  fiat_p256_uint1 x77;
+  fiat_p256_addcarryx_u32(&x76, &x77, x75, x68, x71);
+  uint32_t x78;
+  fiat_p256_uint1 x79;
+  fiat_p256_addcarryx_u32(&x78, &x79, 0x0, x72, x60);
+  uint32_t x80;
+  fiat_p256_uint1 x81;
+  fiat_p256_addcarryx_u32(&x80, &x81, x79, x74, x62);
+  uint32_t x82;
+  fiat_p256_uint1 x83;
+  fiat_p256_addcarryx_u32(&x82, &x83, x81, x76, x64);
+  uint32_t x84;
+  fiat_p256_uint1 x85;
+  fiat_p256_addcarryx_u32(&x84, &x85, x55, 0x0, 0x0);
+  uint32_t x86;
+  fiat_p256_uint1 x87;
+  fiat_p256_addcarryx_u32(&x86, &x87, x65, 0x0, (fiat_p256_uint1)x84);
+  uint32_t x88;
+  fiat_p256_uint1 x89;
+  fiat_p256_addcarryx_u32(&x88, &x89, x77, 0x0, x69);
+  uint32_t x90;
+  fiat_p256_uint1 x91;
+  fiat_p256_addcarryx_u32(&x90, &x91, x83, x88, x86);
+  uint32_t x92;
+  fiat_p256_uint1 x93;
+  fiat_p256_addcarryx_u32(&x92, &x93, x91, 0x0, x1);
+  uint32_t x94;
+  fiat_p256_uint1 x95;
+  fiat_p256_addcarryx_u32(&x94, &x95, x93, 0x0, x56);
+  uint32_t x96;
+  fiat_p256_uint1 x97;
+  fiat_p256_addcarryx_u32(&x96, &x97, x95, x60, x58);
+  uint32_t x98;
+  fiat_p256_uint1 x99;
+  fiat_p256_addcarryx_u32(&x98, &x99, x59, x31, 0x0);
+  uint32_t x100;
+  fiat_p256_uint1 x101;
+  fiat_p256_addcarryx_u32(&x100, &x101, x97, x66, x98);
+  uint32_t x102;
+  fiat_p256_uint1 x103;
+  fiat_p256_addcarryx_u32(&x102, &x103, 0x0, (arg1[3]), x80);
+  uint32_t x104;
+  fiat_p256_uint1 x105;
+  fiat_p256_addcarryx_u32(&x104, &x105, x103, 0x0, x82);
+  uint32_t x106;
+  fiat_p256_uint1 x107;
+  fiat_p256_addcarryx_u32(&x106, &x107, x105, 0x0, x90);
+  uint32_t x108;
+  fiat_p256_uint1 x109;
+  fiat_p256_addcarryx_u32(&x108, &x109, x107, 0x0, x92);
+  uint32_t x110;
+  fiat_p256_uint1 x111;
+  fiat_p256_addcarryx_u32(&x110, &x111, x109, 0x0, x94);
+  uint32_t x112;
+  fiat_p256_uint1 x113;
+  fiat_p256_addcarryx_u32(&x112, &x113, x111, 0x0, x96);
+  uint32_t x114;
+  fiat_p256_uint1 x115;
+  fiat_p256_addcarryx_u32(&x114, &x115, x113, 0x0, x100);
+  uint32_t x116;
+  fiat_p256_uint1 x117;
+  fiat_p256_addcarryx_u32(&x116, &x117, x101, x67, 0x0);
+  uint32_t x118;
+  fiat_p256_uint1 x119;
+  fiat_p256_addcarryx_u32(&x118, &x119, x115, 0x0, x116);
+  uint32_t x120;
+  uint32_t x121;
+  fiat_p256_mulx_u32(&x120, &x121, x102, UINT32_C(0xffffffff));
+  uint32_t x122;
+  uint32_t x123;
+  fiat_p256_mulx_u32(&x122, &x123, x102, UINT32_C(0xffffffff));
+  uint32_t x124;
+  uint32_t x125;
+  fiat_p256_mulx_u32(&x124, &x125, x102, UINT32_C(0xffffffff));
+  uint32_t x126;
+  uint32_t x127;
+  fiat_p256_mulx_u32(&x126, &x127, x102, UINT32_C(0xffffffff));
+  uint32_t x128;
+  fiat_p256_uint1 x129;
+  fiat_p256_addcarryx_u32(&x128, &x129, 0x0, x124, x127);
+  uint32_t x130;
+  fiat_p256_uint1 x131;
+  fiat_p256_addcarryx_u32(&x130, &x131, x129, x122, x125);
+  uint32_t x132;
+  fiat_p256_uint1 x133;
+  fiat_p256_addcarryx_u32(&x132, &x133, 0x0, x126, x102);
+  uint32_t x134;
+  fiat_p256_uint1 x135;
+  fiat_p256_addcarryx_u32(&x134, &x135, x133, x128, x104);
+  uint32_t x136;
+  fiat_p256_uint1 x137;
+  fiat_p256_addcarryx_u32(&x136, &x137, x135, x130, x106);
+  uint32_t x138;
+  fiat_p256_uint1 x139;
+  fiat_p256_addcarryx_u32(&x138, &x139, x131, 0x0, x123);
+  uint32_t x140;
+  fiat_p256_uint1 x141;
+  fiat_p256_addcarryx_u32(&x140, &x141, x137, x138, x108);
+  uint32_t x142;
+  fiat_p256_uint1 x143;
+  fiat_p256_addcarryx_u32(&x142, &x143, x141, 0x0, x110);
+  uint32_t x144;
+  fiat_p256_uint1 x145;
+  fiat_p256_addcarryx_u32(&x144, &x145, x143, 0x0, x112);
+  uint32_t x146;
+  fiat_p256_uint1 x147;
+  fiat_p256_addcarryx_u32(&x146, &x147, x145, x102, x114);
+  uint32_t x148;
+  fiat_p256_uint1 x149;
+  fiat_p256_addcarryx_u32(&x148, &x149, x147, x120, x118);
+  uint32_t x150;
+  fiat_p256_uint1 x151;
+  fiat_p256_addcarryx_u32(&x150, &x151, x119, 0x0, 0x0);
+  uint32_t x152;
+  fiat_p256_uint1 x153;
+  fiat_p256_addcarryx_u32(&x152, &x153, x149, x121, (fiat_p256_uint1)x150);
+  uint32_t x154;
+  fiat_p256_uint1 x155;
+  fiat_p256_addcarryx_u32(&x154, &x155, 0x0, (arg1[4]), x134);
+  uint32_t x156;
+  fiat_p256_uint1 x157;
+  fiat_p256_addcarryx_u32(&x156, &x157, x155, 0x0, x136);
+  uint32_t x158;
+  fiat_p256_uint1 x159;
+  fiat_p256_addcarryx_u32(&x158, &x159, x157, 0x0, x140);
+  uint32_t x160;
+  fiat_p256_uint1 x161;
+  fiat_p256_addcarryx_u32(&x160, &x161, x159, 0x0, x142);
+  uint32_t x162;
+  fiat_p256_uint1 x163;
+  fiat_p256_addcarryx_u32(&x162, &x163, x161, 0x0, x144);
+  uint32_t x164;
+  fiat_p256_uint1 x165;
+  fiat_p256_addcarryx_u32(&x164, &x165, x163, 0x0, x146);
+  uint32_t x166;
+  fiat_p256_uint1 x167;
+  fiat_p256_addcarryx_u32(&x166, &x167, x165, 0x0, x148);
+  uint32_t x168;
+  fiat_p256_uint1 x169;
+  fiat_p256_addcarryx_u32(&x168, &x169, x167, 0x0, x152);
+  uint32_t x170;
+  uint32_t x171;
+  fiat_p256_mulx_u32(&x170, &x171, x154, UINT32_C(0xffffffff));
+  uint32_t x172;
+  uint32_t x173;
+  fiat_p256_mulx_u32(&x172, &x173, x154, UINT32_C(0xffffffff));
+  uint32_t x174;
+  uint32_t x175;
+  fiat_p256_mulx_u32(&x174, &x175, x154, UINT32_C(0xffffffff));
+  uint32_t x176;
+  uint32_t x177;
+  fiat_p256_mulx_u32(&x176, &x177, x154, UINT32_C(0xffffffff));
+  uint32_t x178;
+  fiat_p256_uint1 x179;
+  fiat_p256_addcarryx_u32(&x178, &x179, 0x0, x174, x177);
+  uint32_t x180;
+  fiat_p256_uint1 x181;
+  fiat_p256_addcarryx_u32(&x180, &x181, x179, x172, x175);
+  uint32_t x182;
+  fiat_p256_uint1 x183;
+  fiat_p256_addcarryx_u32(&x182, &x183, 0x0, x176, x154);
+  uint32_t x184;
+  fiat_p256_uint1 x185;
+  fiat_p256_addcarryx_u32(&x184, &x185, x183, x178, x156);
+  uint32_t x186;
+  fiat_p256_uint1 x187;
+  fiat_p256_addcarryx_u32(&x186, &x187, x185, x180, x158);
+  uint32_t x188;
+  fiat_p256_uint1 x189;
+  fiat_p256_addcarryx_u32(&x188, &x189, x181, 0x0, x173);
+  uint32_t x190;
+  fiat_p256_uint1 x191;
+  fiat_p256_addcarryx_u32(&x190, &x191, x187, x188, x160);
+  uint32_t x192;
+  fiat_p256_uint1 x193;
+  fiat_p256_addcarryx_u32(&x192, &x193, x191, 0x0, x162);
+  uint32_t x194;
+  fiat_p256_uint1 x195;
+  fiat_p256_addcarryx_u32(&x194, &x195, x193, 0x0, x164);
+  uint32_t x196;
+  fiat_p256_uint1 x197;
+  fiat_p256_addcarryx_u32(&x196, &x197, x195, x154, x166);
+  uint32_t x198;
+  fiat_p256_uint1 x199;
+  fiat_p256_addcarryx_u32(&x198, &x199, x197, x170, x168);
+  uint32_t x200;
+  fiat_p256_uint1 x201;
+  fiat_p256_addcarryx_u32(&x200, &x201, x153, 0x0, 0x0);
+  uint32_t x202;
+  fiat_p256_uint1 x203;
+  fiat_p256_addcarryx_u32(&x202, &x203, x169, 0x0, (fiat_p256_uint1)x200);
+  uint32_t x204;
+  fiat_p256_uint1 x205;
+  fiat_p256_addcarryx_u32(&x204, &x205, x199, x171, x202);
+  uint32_t x206;
+  fiat_p256_uint1 x207;
+  fiat_p256_addcarryx_u32(&x206, &x207, 0x0, (arg1[5]), x184);
+  uint32_t x208;
+  fiat_p256_uint1 x209;
+  fiat_p256_addcarryx_u32(&x208, &x209, x207, 0x0, x186);
+  uint32_t x210;
+  fiat_p256_uint1 x211;
+  fiat_p256_addcarryx_u32(&x210, &x211, x209, 0x0, x190);
+  uint32_t x212;
+  fiat_p256_uint1 x213;
+  fiat_p256_addcarryx_u32(&x212, &x213, x211, 0x0, x192);
+  uint32_t x214;
+  fiat_p256_uint1 x215;
+  fiat_p256_addcarryx_u32(&x214, &x215, x213, 0x0, x194);
+  uint32_t x216;
+  fiat_p256_uint1 x217;
+  fiat_p256_addcarryx_u32(&x216, &x217, x215, 0x0, x196);
+  uint32_t x218;
+  fiat_p256_uint1 x219;
+  fiat_p256_addcarryx_u32(&x218, &x219, x217, 0x0, x198);
+  uint32_t x220;
+  fiat_p256_uint1 x221;
+  fiat_p256_addcarryx_u32(&x220, &x221, x219, 0x0, x204);
+  uint32_t x222;
+  uint32_t x223;
+  fiat_p256_mulx_u32(&x222, &x223, x206, UINT32_C(0xffffffff));
+  uint32_t x224;
+  uint32_t x225;
+  fiat_p256_mulx_u32(&x224, &x225, x206, UINT32_C(0xffffffff));
+  uint32_t x226;
+  uint32_t x227;
+  fiat_p256_mulx_u32(&x226, &x227, x206, UINT32_C(0xffffffff));
+  uint32_t x228;
+  uint32_t x229;
+  fiat_p256_mulx_u32(&x228, &x229, x206, UINT32_C(0xffffffff));
+  uint32_t x230;
+  fiat_p256_uint1 x231;
+  fiat_p256_addcarryx_u32(&x230, &x231, 0x0, x226, x229);
+  uint32_t x232;
+  fiat_p256_uint1 x233;
+  fiat_p256_addcarryx_u32(&x232, &x233, x231, x224, x227);
+  uint32_t x234;
+  fiat_p256_uint1 x235;
+  fiat_p256_addcarryx_u32(&x234, &x235, 0x0, x228, x206);
+  uint32_t x236;
+  fiat_p256_uint1 x237;
+  fiat_p256_addcarryx_u32(&x236, &x237, x235, x230, x208);
+  uint32_t x238;
+  fiat_p256_uint1 x239;
+  fiat_p256_addcarryx_u32(&x238, &x239, x237, x232, x210);
+  uint32_t x240;
+  fiat_p256_uint1 x241;
+  fiat_p256_addcarryx_u32(&x240, &x241, x233, 0x0, x225);
+  uint32_t x242;
+  fiat_p256_uint1 x243;
+  fiat_p256_addcarryx_u32(&x242, &x243, x239, x240, x212);
+  uint32_t x244;
+  fiat_p256_uint1 x245;
+  fiat_p256_addcarryx_u32(&x244, &x245, x243, 0x0, x214);
+  uint32_t x246;
+  fiat_p256_uint1 x247;
+  fiat_p256_addcarryx_u32(&x246, &x247, x245, 0x0, x216);
+  uint32_t x248;
+  fiat_p256_uint1 x249;
+  fiat_p256_addcarryx_u32(&x248, &x249, x247, x206, x218);
+  uint32_t x250;
+  fiat_p256_uint1 x251;
+  fiat_p256_addcarryx_u32(&x250, &x251, x249, x222, x220);
+  uint32_t x252;
+  fiat_p256_uint1 x253;
+  fiat_p256_addcarryx_u32(&x252, &x253, x205, 0x0, 0x0);
+  uint32_t x254;
+  fiat_p256_uint1 x255;
+  fiat_p256_addcarryx_u32(&x254, &x255, x221, 0x0, (fiat_p256_uint1)x252);
+  uint32_t x256;
+  fiat_p256_uint1 x257;
+  fiat_p256_addcarryx_u32(&x256, &x257, x251, x223, x254);
+  uint32_t x258;
+  fiat_p256_uint1 x259;
+  fiat_p256_addcarryx_u32(&x258, &x259, 0x0, (arg1[6]), x236);
+  uint32_t x260;
+  fiat_p256_uint1 x261;
+  fiat_p256_addcarryx_u32(&x260, &x261, x259, 0x0, x238);
+  uint32_t x262;
+  fiat_p256_uint1 x263;
+  fiat_p256_addcarryx_u32(&x262, &x263, x261, 0x0, x242);
+  uint32_t x264;
+  fiat_p256_uint1 x265;
+  fiat_p256_addcarryx_u32(&x264, &x265, x263, 0x0, x244);
+  uint32_t x266;
+  fiat_p256_uint1 x267;
+  fiat_p256_addcarryx_u32(&x266, &x267, x265, 0x0, x246);
+  uint32_t x268;
+  fiat_p256_uint1 x269;
+  fiat_p256_addcarryx_u32(&x268, &x269, x267, 0x0, x248);
+  uint32_t x270;
+  fiat_p256_uint1 x271;
+  fiat_p256_addcarryx_u32(&x270, &x271, x269, 0x0, x250);
+  uint32_t x272;
+  fiat_p256_uint1 x273;
+  fiat_p256_addcarryx_u32(&x272, &x273, x271, 0x0, x256);
+  uint32_t x274;
+  uint32_t x275;
+  fiat_p256_mulx_u32(&x274, &x275, x258, UINT32_C(0xffffffff));
+  uint32_t x276;
+  uint32_t x277;
+  fiat_p256_mulx_u32(&x276, &x277, x258, UINT32_C(0xffffffff));
+  uint32_t x278;
+  uint32_t x279;
+  fiat_p256_mulx_u32(&x278, &x279, x258, UINT32_C(0xffffffff));
+  uint32_t x280;
+  uint32_t x281;
+  fiat_p256_mulx_u32(&x280, &x281, x258, UINT32_C(0xffffffff));
+  uint32_t x282;
+  fiat_p256_uint1 x283;
+  fiat_p256_addcarryx_u32(&x282, &x283, 0x0, x278, x281);
+  uint32_t x284;
+  fiat_p256_uint1 x285;
+  fiat_p256_addcarryx_u32(&x284, &x285, x283, x276, x279);
+  uint32_t x286;
+  fiat_p256_uint1 x287;
+  fiat_p256_addcarryx_u32(&x286, &x287, 0x0, x280, x258);
+  uint32_t x288;
+  fiat_p256_uint1 x289;
+  fiat_p256_addcarryx_u32(&x288, &x289, x287, x282, x260);
+  uint32_t x290;
+  fiat_p256_uint1 x291;
+  fiat_p256_addcarryx_u32(&x290, &x291, x289, x284, x262);
+  uint32_t x292;
+  fiat_p256_uint1 x293;
+  fiat_p256_addcarryx_u32(&x292, &x293, x285, 0x0, x277);
+  uint32_t x294;
+  fiat_p256_uint1 x295;
+  fiat_p256_addcarryx_u32(&x294, &x295, x291, x292, x264);
+  uint32_t x296;
+  fiat_p256_uint1 x297;
+  fiat_p256_addcarryx_u32(&x296, &x297, x295, 0x0, x266);
+  uint32_t x298;
+  fiat_p256_uint1 x299;
+  fiat_p256_addcarryx_u32(&x298, &x299, x297, 0x0, x268);
+  uint32_t x300;
+  fiat_p256_uint1 x301;
+  fiat_p256_addcarryx_u32(&x300, &x301, x299, x258, x270);
+  uint32_t x302;
+  fiat_p256_uint1 x303;
+  fiat_p256_addcarryx_u32(&x302, &x303, x301, x274, x272);
+  uint32_t x304;
+  fiat_p256_uint1 x305;
+  fiat_p256_addcarryx_u32(&x304, &x305, x257, 0x0, 0x0);
+  uint32_t x306;
+  fiat_p256_uint1 x307;
+  fiat_p256_addcarryx_u32(&x306, &x307, x273, 0x0, (fiat_p256_uint1)x304);
+  uint32_t x308;
+  fiat_p256_uint1 x309;
+  fiat_p256_addcarryx_u32(&x308, &x309, x303, x275, x306);
+  uint32_t x310;
+  fiat_p256_uint1 x311;
+  fiat_p256_addcarryx_u32(&x310, &x311, 0x0, (arg1[7]), x288);
+  uint32_t x312;
+  fiat_p256_uint1 x313;
+  fiat_p256_addcarryx_u32(&x312, &x313, x311, 0x0, x290);
+  uint32_t x314;
+  fiat_p256_uint1 x315;
+  fiat_p256_addcarryx_u32(&x314, &x315, x313, 0x0, x294);
+  uint32_t x316;
+  fiat_p256_uint1 x317;
+  fiat_p256_addcarryx_u32(&x316, &x317, x315, 0x0, x296);
+  uint32_t x318;
+  fiat_p256_uint1 x319;
+  fiat_p256_addcarryx_u32(&x318, &x319, x317, 0x0, x298);
+  uint32_t x320;
+  fiat_p256_uint1 x321;
+  fiat_p256_addcarryx_u32(&x320, &x321, x319, 0x0, x300);
+  uint32_t x322;
+  fiat_p256_uint1 x323;
+  fiat_p256_addcarryx_u32(&x322, &x323, x321, 0x0, x302);
+  uint32_t x324;
+  fiat_p256_uint1 x325;
+  fiat_p256_addcarryx_u32(&x324, &x325, x323, 0x0, x308);
+  uint32_t x326;
+  uint32_t x327;
+  fiat_p256_mulx_u32(&x326, &x327, x310, UINT32_C(0xffffffff));
+  uint32_t x328;
+  uint32_t x329;
+  fiat_p256_mulx_u32(&x328, &x329, x310, UINT32_C(0xffffffff));
+  uint32_t x330;
+  uint32_t x331;
+  fiat_p256_mulx_u32(&x330, &x331, x310, UINT32_C(0xffffffff));
+  uint32_t x332;
+  uint32_t x333;
+  fiat_p256_mulx_u32(&x332, &x333, x310, UINT32_C(0xffffffff));
+  uint32_t x334;
+  fiat_p256_uint1 x335;
+  fiat_p256_addcarryx_u32(&x334, &x335, 0x0, x330, x333);
+  uint32_t x336;
+  fiat_p256_uint1 x337;
+  fiat_p256_addcarryx_u32(&x336, &x337, x335, x328, x331);
+  uint32_t x338;
+  fiat_p256_uint1 x339;
+  fiat_p256_addcarryx_u32(&x338, &x339, 0x0, x332, x310);
+  uint32_t x340;
+  fiat_p256_uint1 x341;
+  fiat_p256_addcarryx_u32(&x340, &x341, x339, x334, x312);
+  uint32_t x342;
+  fiat_p256_uint1 x343;
+  fiat_p256_addcarryx_u32(&x342, &x343, x341, x336, x314);
+  uint32_t x344;
+  fiat_p256_uint1 x345;
+  fiat_p256_addcarryx_u32(&x344, &x345, x337, 0x0, x329);
+  uint32_t x346;
+  fiat_p256_uint1 x347;
+  fiat_p256_addcarryx_u32(&x346, &x347, x343, x344, x316);
+  uint32_t x348;
+  fiat_p256_uint1 x349;
+  fiat_p256_addcarryx_u32(&x348, &x349, x347, 0x0, x318);
+  uint32_t x350;
+  fiat_p256_uint1 x351;
+  fiat_p256_addcarryx_u32(&x350, &x351, x349, 0x0, x320);
+  uint32_t x352;
+  fiat_p256_uint1 x353;
+  fiat_p256_addcarryx_u32(&x352, &x353, x351, x310, x322);
+  uint32_t x354;
+  fiat_p256_uint1 x355;
+  fiat_p256_addcarryx_u32(&x354, &x355, x353, x326, x324);
+  uint32_t x356;
+  fiat_p256_uint1 x357;
+  fiat_p256_addcarryx_u32(&x356, &x357, x309, 0x0, 0x0);
+  uint32_t x358;
+  fiat_p256_uint1 x359;
+  fiat_p256_addcarryx_u32(&x358, &x359, x325, 0x0, (fiat_p256_uint1)x356);
+  uint32_t x360;
+  fiat_p256_uint1 x361;
+  fiat_p256_addcarryx_u32(&x360, &x361, x355, x327, x358);
+  uint32_t x362;
+  fiat_p256_uint1 x363;
+  fiat_p256_subborrowx_u32(&x362, &x363, 0x0, x340, UINT32_C(0xffffffff));
+  uint32_t x364;
+  fiat_p256_uint1 x365;
+  fiat_p256_subborrowx_u32(&x364, &x365, x363, x342, UINT32_C(0xffffffff));
+  uint32_t x366;
+  fiat_p256_uint1 x367;
+  fiat_p256_subborrowx_u32(&x366, &x367, x365, x346, UINT32_C(0xffffffff));
+  uint32_t x368;
+  fiat_p256_uint1 x369;
+  fiat_p256_subborrowx_u32(&x368, &x369, x367, x348, 0x0);
+  uint32_t x370;
+  fiat_p256_uint1 x371;
+  fiat_p256_subborrowx_u32(&x370, &x371, x369, x350, 0x0);
+  uint32_t x372;
+  fiat_p256_uint1 x373;
+  fiat_p256_subborrowx_u32(&x372, &x373, x371, x352, 0x0);
+  uint32_t x374;
+  fiat_p256_uint1 x375;
+  fiat_p256_subborrowx_u32(&x374, &x375, x373, x354, 0x1);
+  uint32_t x376;
+  fiat_p256_uint1 x377;
+  fiat_p256_subborrowx_u32(&x376, &x377, x375, x360, UINT32_C(0xffffffff));
+  uint32_t x378;
+  fiat_p256_uint1 x379;
+  fiat_p256_addcarryx_u32(&x378, &x379, x361, 0x0, 0x0);
+  uint32_t x380;
+  fiat_p256_uint1 x381;
+  fiat_p256_subborrowx_u32(&x380, &x381, x377, (fiat_p256_uint1)x378, 0x0);
+  uint32_t x382;
+  fiat_p256_cmovznz_u32(&x382, x381, x362, x340);
+  uint32_t x383;
+  fiat_p256_cmovznz_u32(&x383, x381, x364, x342);
+  uint32_t x384;
+  fiat_p256_cmovznz_u32(&x384, x381, x366, x346);
+  uint32_t x385;
+  fiat_p256_cmovznz_u32(&x385, x381, x368, x348);
+  uint32_t x386;
+  fiat_p256_cmovznz_u32(&x386, x381, x370, x350);
+  uint32_t x387;
+  fiat_p256_cmovznz_u32(&x387, x381, x372, x352);
+  uint32_t x388;
+  fiat_p256_cmovznz_u32(&x388, x381, x374, x354);
+  uint32_t x389;
+  fiat_p256_cmovznz_u32(&x389, x381, x376, x360);
+  out1[0] = x382;
+  out1[1] = x383;
+  out1[2] = x384;
+  out1[3] = x385;
+  out1[4] = x386;
+  out1[5] = x387;
+  out1[6] = x388;
+  out1[7] = x389;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_nonzero(uint32_t* out1, const uint32_t arg1[8]) {
+  uint32_t x1 = ((arg1[0]) | ((arg1[1]) | ((arg1[2]) | ((arg1[3]) | ((arg1[4]) | ((arg1[5]) | ((arg1[6]) | ((arg1[7]) | (uint32_t)0x0))))))));
+  *out1 = x1;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_selectznz(uint32_t out1[8], fiat_p256_uint1 arg1, const uint32_t arg2[8], const uint32_t arg3[8]) {
+  uint32_t x1;
+  fiat_p256_cmovznz_u32(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint32_t x2;
+  fiat_p256_cmovznz_u32(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint32_t x3;
+  fiat_p256_cmovznz_u32(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint32_t x4;
+  fiat_p256_cmovznz_u32(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint32_t x5;
+  fiat_p256_cmovznz_u32(&x5, arg1, (arg2[4]), (arg3[4]));
+  uint32_t x6;
+  fiat_p256_cmovznz_u32(&x6, arg1, (arg2[5]), (arg3[5]));
+  uint32_t x7;
+  fiat_p256_cmovznz_u32(&x7, arg1, (arg2[6]), (arg3[6]));
+  uint32_t x8;
+  fiat_p256_cmovznz_u32(&x8, arg1, (arg2[7]), (arg3[7]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ */
+static void fiat_p256_to_bytes(uint8_t out1[32], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[7]);
+  uint32_t x2 = (arg1[6]);
+  uint32_t x3 = (arg1[5]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[3]);
+  uint32_t x6 = (arg1[2]);
+  uint32_t x7 = (arg1[1]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9 = (x8 >> 8);
+  uint8_t x10 = (uint8_t)(x8 & UINT8_C(0xff));
+  uint32_t x11 = (x9 >> 8);
+  uint8_t x12 = (uint8_t)(x9 & UINT8_C(0xff));
+  uint8_t x13 = (uint8_t)(x11 >> 8);
+  uint8_t x14 = (uint8_t)(x11 & UINT8_C(0xff));
+  uint8_t x15 = (uint8_t)(x13 & UINT8_C(0xff));
+  uint32_t x16 = (x7 >> 8);
+  uint8_t x17 = (uint8_t)(x7 & UINT8_C(0xff));
+  uint32_t x18 = (x16 >> 8);
+  uint8_t x19 = (uint8_t)(x16 & UINT8_C(0xff));
+  uint8_t x20 = (uint8_t)(x18 >> 8);
+  uint8_t x21 = (uint8_t)(x18 & UINT8_C(0xff));
+  uint8_t x22 = (uint8_t)(x20 & UINT8_C(0xff));
+  uint32_t x23 = (x6 >> 8);
+  uint8_t x24 = (uint8_t)(x6 & UINT8_C(0xff));
+  uint32_t x25 = (x23 >> 8);
+  uint8_t x26 = (uint8_t)(x23 & UINT8_C(0xff));
+  uint8_t x27 = (uint8_t)(x25 >> 8);
+  uint8_t x28 = (uint8_t)(x25 & UINT8_C(0xff));
+  uint8_t x29 = (uint8_t)(x27 & UINT8_C(0xff));
+  uint32_t x30 = (x5 >> 8);
+  uint8_t x31 = (uint8_t)(x5 & UINT8_C(0xff));
+  uint32_t x32 = (x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint8_t x34 = (uint8_t)(x32 >> 8);
+  uint8_t x35 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint8_t x36 = (uint8_t)(x34 & UINT8_C(0xff));
+  uint32_t x37 = (x4 >> 8);
+  uint8_t x38 = (uint8_t)(x4 & UINT8_C(0xff));
+  uint32_t x39 = (x37 >> 8);
+  uint8_t x40 = (uint8_t)(x37 & UINT8_C(0xff));
+  uint8_t x41 = (uint8_t)(x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint8_t x43 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint32_t x44 = (x3 >> 8);
+  uint8_t x45 = (uint8_t)(x3 & UINT8_C(0xff));
+  uint32_t x46 = (x44 >> 8);
+  uint8_t x47 = (uint8_t)(x44 & UINT8_C(0xff));
+  uint8_t x48 = (uint8_t)(x46 >> 8);
+  uint8_t x49 = (uint8_t)(x46 & UINT8_C(0xff));
+  uint8_t x50 = (uint8_t)(x48 & UINT8_C(0xff));
+  uint32_t x51 = (x2 >> 8);
+  uint8_t x52 = (uint8_t)(x2 & UINT8_C(0xff));
+  uint32_t x53 = (x51 >> 8);
+  uint8_t x54 = (uint8_t)(x51 & UINT8_C(0xff));
+  uint8_t x55 = (uint8_t)(x53 >> 8);
+  uint8_t x56 = (uint8_t)(x53 & UINT8_C(0xff));
+  uint8_t x57 = (uint8_t)(x55 & UINT8_C(0xff));
+  uint32_t x58 = (x1 >> 8);
+  uint8_t x59 = (uint8_t)(x1 & UINT8_C(0xff));
+  uint32_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint8_t x62 = (uint8_t)(x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x15;
+  out1[4] = x17;
+  out1[5] = x19;
+  out1[6] = x21;
+  out1[7] = x22;
+  out1[8] = x24;
+  out1[9] = x26;
+  out1[10] = x28;
+  out1[11] = x29;
+  out1[12] = x31;
+  out1[13] = x33;
+  out1[14] = x35;
+  out1[15] = x36;
+  out1[16] = x38;
+  out1[17] = x40;
+  out1[18] = x42;
+  out1[19] = x43;
+  out1[20] = x45;
+  out1[21] = x47;
+  out1[22] = x49;
+  out1[23] = x50;
+  out1[24] = x52;
+  out1[25] = x54;
+  out1[26] = x56;
+  out1[27] = x57;
+  out1[28] = x59;
+  out1[29] = x61;
+  out1[30] = x63;
+  out1[31] = x62;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_from_bytes(uint32_t out1[8], const uint8_t arg1[32]) {
+  uint32_t x1 = ((uint32_t)(arg1[31]) << 24);
+  uint32_t x2 = ((uint32_t)(arg1[30]) << 16);
+  uint32_t x3 = ((uint32_t)(arg1[29]) << 8);
+  uint8_t x4 = (arg1[28]);
+  uint32_t x5 = ((uint32_t)(arg1[27]) << 24);
+  uint32_t x6 = ((uint32_t)(arg1[26]) << 16);
+  uint32_t x7 = ((uint32_t)(arg1[25]) << 8);
+  uint8_t x8 = (arg1[24]);
+  uint32_t x9 = ((uint32_t)(arg1[23]) << 24);
+  uint32_t x10 = ((uint32_t)(arg1[22]) << 16);
+  uint32_t x11 = ((uint32_t)(arg1[21]) << 8);
+  uint8_t x12 = (arg1[20]);
+  uint32_t x13 = ((uint32_t)(arg1[19]) << 24);
+  uint32_t x14 = ((uint32_t)(arg1[18]) << 16);
+  uint32_t x15 = ((uint32_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint32_t x17 = ((uint32_t)(arg1[15]) << 24);
+  uint32_t x18 = ((uint32_t)(arg1[14]) << 16);
+  uint32_t x19 = ((uint32_t)(arg1[13]) << 8);
+  uint8_t x20 = (arg1[12]);
+  uint32_t x21 = ((uint32_t)(arg1[11]) << 24);
+  uint32_t x22 = ((uint32_t)(arg1[10]) << 16);
+  uint32_t x23 = ((uint32_t)(arg1[9]) << 8);
+  uint8_t x24 = (arg1[8]);
+  uint32_t x25 = ((uint32_t)(arg1[7]) << 24);
+  uint32_t x26 = ((uint32_t)(arg1[6]) << 16);
+  uint32_t x27 = ((uint32_t)(arg1[5]) << 8);
+  uint8_t x28 = (arg1[4]);
+  uint32_t x29 = ((uint32_t)(arg1[3]) << 24);
+  uint32_t x30 = ((uint32_t)(arg1[2]) << 16);
+  uint32_t x31 = ((uint32_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint32_t x33 = (x32 + (x31 + (x30 + x29)));
+  uint32_t x34 = (x33 & UINT32_C(0xffffffff));
+  uint32_t x35 = (x4 + (x3 + (x2 + x1)));
+  uint32_t x36 = (x8 + (x7 + (x6 + x5)));
+  uint32_t x37 = (x12 + (x11 + (x10 + x9)));
+  uint32_t x38 = (x16 + (x15 + (x14 + x13)));
+  uint32_t x39 = (x20 + (x19 + (x18 + x17)));
+  uint32_t x40 = (x24 + (x23 + (x22 + x21)));
+  uint32_t x41 = (x28 + (x27 + (x26 + x25)));
+  uint32_t x42 = (x41 & UINT32_C(0xffffffff));
+  uint32_t x43 = (x40 & UINT32_C(0xffffffff));
+  uint32_t x44 = (x39 & UINT32_C(0xffffffff));
+  uint32_t x45 = (x38 & UINT32_C(0xffffffff));
+  uint32_t x46 = (x37 & UINT32_C(0xffffffff));
+  uint32_t x47 = (x36 & UINT32_C(0xffffffff));
+  out1[0] = x34;
+  out1[1] = x42;
+  out1[2] = x43;
+  out1[3] = x44;
+  out1[4] = x45;
+  out1[5] = x46;
+  out1[6] = x47;
+  out1[7] = x35;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h.grpc_back
new file mode 100644
index 0000000..638eb5d
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_32.h.grpc_back	
@@ -0,0 +1,3226 @@
+/* Autogenerated */
+/* curve description: p256 */
+/* requested operations: (all) */
+/* m = 0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff (from "2^256 - 2^224 + 2^192 + 2^96 - 1") */
+/* machine_wordsize = 32 (from "32") */
+/*                                                                    */
+/* NOTE: In addition to the bounds specified above each function, all */
+/*   functions synthesized for this Montgomery arithmetic require the */
+/*   input to be strictly less than the prime modulus (m), and also   */
+/*   require the input to be in the unique saturated representation.  */
+/*   All functions also ensure that these two properties are true of  */
+/*   return values.                                                   */
+
+#include <stdint.h>
+typedef unsigned char fiat_p256_uint1;
+typedef signed char fiat_p256_int1;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_addcarryx_u32(uint32_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  uint64_t x1 = ((arg1 + (uint64_t)arg2) + arg3);
+  uint32_t x2 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  fiat_p256_uint1 x3 = (fiat_p256_uint1)(x1 >> 32);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_subborrowx_u32(uint32_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  int64_t x1 = ((arg2 - (int64_t)arg1) - arg3);
+  fiat_p256_int1 x2 = (fiat_p256_int1)(x1 >> 32);
+  uint32_t x3 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  *out1 = x3;
+  *out2 = (fiat_p256_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0xffffffff]
+ *   arg2: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ *   out2: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_mulx_u32(uint32_t* out1, uint32_t* out2, uint32_t arg1, uint32_t arg2) {
+  uint64_t x1 = ((uint64_t)arg1 * arg2);
+  uint32_t x2 = (uint32_t)(x1 & UINT32_C(0xffffffff));
+  uint32_t x3 = (uint32_t)(x1 >> 32);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffff]
+ *   arg3: [0x0 ~> 0xffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_cmovznz_u32(uint32_t* out1, fiat_p256_uint1 arg1, uint32_t arg2, uint32_t arg3) {
+  fiat_p256_uint1 x1 = (!(!arg1));
+  uint32_t x2 = ((fiat_p256_int1)(0x0 - x1) & UINT32_C(0xffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint32_t x3 = ((value_barrier_u32(x2) & arg3) | (value_barrier_u32(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_mul(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1 = (arg1[1]);
+  uint32_t x2 = (arg1[2]);
+  uint32_t x3 = (arg1[3]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[5]);
+  uint32_t x6 = (arg1[6]);
+  uint32_t x7 = (arg1[7]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9;
+  uint32_t x10;
+  fiat_p256_mulx_u32(&x9, &x10, x8, (arg2[7]));
+  uint32_t x11;
+  uint32_t x12;
+  fiat_p256_mulx_u32(&x11, &x12, x8, (arg2[6]));
+  uint32_t x13;
+  uint32_t x14;
+  fiat_p256_mulx_u32(&x13, &x14, x8, (arg2[5]));
+  uint32_t x15;
+  uint32_t x16;
+  fiat_p256_mulx_u32(&x15, &x16, x8, (arg2[4]));
+  uint32_t x17;
+  uint32_t x18;
+  fiat_p256_mulx_u32(&x17, &x18, x8, (arg2[3]));
+  uint32_t x19;
+  uint32_t x20;
+  fiat_p256_mulx_u32(&x19, &x20, x8, (arg2[2]));
+  uint32_t x21;
+  uint32_t x22;
+  fiat_p256_mulx_u32(&x21, &x22, x8, (arg2[1]));
+  uint32_t x23;
+  uint32_t x24;
+  fiat_p256_mulx_u32(&x23, &x24, x8, (arg2[0]));
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_addcarryx_u32(&x25, &x26, 0x0, x21, x24);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u32(&x27, &x28, x26, x19, x22);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u32(&x29, &x30, x28, x17, x20);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u32(&x31, &x32, x30, x15, x18);
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u32(&x33, &x34, x32, x13, x16);
+  uint32_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u32(&x35, &x36, x34, x11, x14);
+  uint32_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u32(&x37, &x38, x36, x9, x12);
+  uint32_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u32(&x39, &x40, x38, 0x0, x10);
+  uint32_t x41;
+  uint32_t x42;
+  fiat_p256_mulx_u32(&x41, &x42, x23, UINT32_C(0xffffffff));
+  uint32_t x43;
+  uint32_t x44;
+  fiat_p256_mulx_u32(&x43, &x44, x23, UINT32_C(0xffffffff));
+  uint32_t x45;
+  uint32_t x46;
+  fiat_p256_mulx_u32(&x45, &x46, x23, UINT32_C(0xffffffff));
+  uint32_t x47;
+  uint32_t x48;
+  fiat_p256_mulx_u32(&x47, &x48, x23, UINT32_C(0xffffffff));
+  uint32_t x49;
+  fiat_p256_uint1 x50;
+  fiat_p256_addcarryx_u32(&x49, &x50, 0x0, x45, x48);
+  uint32_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u32(&x51, &x52, x50, x43, x46);
+  uint32_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u32(&x53, &x54, x52, 0x0, x44);
+  uint32_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u32(&x55, &x56, 0x0, x47, x23);
+  uint32_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u32(&x57, &x58, x56, x49, x25);
+  uint32_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u32(&x59, &x60, x58, x51, x27);
+  uint32_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u32(&x61, &x62, x60, x53, x29);
+  uint32_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u32(&x63, &x64, x62, 0x0, x31);
+  uint32_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u32(&x65, &x66, x64, 0x0, x33);
+  uint32_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u32(&x67, &x68, x66, x23, x35);
+  uint32_t x69;
+  fiat_p256_uint1 x70;
+  fiat_p256_addcarryx_u32(&x69, &x70, x68, x41, x37);
+  uint32_t x71;
+  fiat_p256_uint1 x72;
+  fiat_p256_addcarryx_u32(&x71, &x72, x70, x42, x39);
+  uint32_t x73;
+  fiat_p256_uint1 x74;
+  fiat_p256_addcarryx_u32(&x73, &x74, x72, 0x0, 0x0);
+  uint32_t x75;
+  uint32_t x76;
+  fiat_p256_mulx_u32(&x75, &x76, x1, (arg2[7]));
+  uint32_t x77;
+  uint32_t x78;
+  fiat_p256_mulx_u32(&x77, &x78, x1, (arg2[6]));
+  uint32_t x79;
+  uint32_t x80;
+  fiat_p256_mulx_u32(&x79, &x80, x1, (arg2[5]));
+  uint32_t x81;
+  uint32_t x82;
+  fiat_p256_mulx_u32(&x81, &x82, x1, (arg2[4]));
+  uint32_t x83;
+  uint32_t x84;
+  fiat_p256_mulx_u32(&x83, &x84, x1, (arg2[3]));
+  uint32_t x85;
+  uint32_t x86;
+  fiat_p256_mulx_u32(&x85, &x86, x1, (arg2[2]));
+  uint32_t x87;
+  uint32_t x88;
+  fiat_p256_mulx_u32(&x87, &x88, x1, (arg2[1]));
+  uint32_t x89;
+  uint32_t x90;
+  fiat_p256_mulx_u32(&x89, &x90, x1, (arg2[0]));
+  uint32_t x91;
+  fiat_p256_uint1 x92;
+  fiat_p256_addcarryx_u32(&x91, &x92, 0x0, x87, x90);
+  uint32_t x93;
+  fiat_p256_uint1 x94;
+  fiat_p256_addcarryx_u32(&x93, &x94, x92, x85, x88);
+  uint32_t x95;
+  fiat_p256_uint1 x96;
+  fiat_p256_addcarryx_u32(&x95, &x96, x94, x83, x86);
+  uint32_t x97;
+  fiat_p256_uint1 x98;
+  fiat_p256_addcarryx_u32(&x97, &x98, x96, x81, x84);
+  uint32_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u32(&x99, &x100, x98, x79, x82);
+  uint32_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u32(&x101, &x102, x100, x77, x80);
+  uint32_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u32(&x103, &x104, x102, x75, x78);
+  uint32_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u32(&x105, &x106, x104, 0x0, x76);
+  uint32_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u32(&x107, &x108, 0x0, x89, x57);
+  uint32_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u32(&x109, &x110, x108, x91, x59);
+  uint32_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u32(&x111, &x112, x110, x93, x61);
+  uint32_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u32(&x113, &x114, x112, x95, x63);
+  uint32_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u32(&x115, &x116, x114, x97, x65);
+  uint32_t x117;
+  fiat_p256_uint1 x118;
+  fiat_p256_addcarryx_u32(&x117, &x118, x116, x99, x67);
+  uint32_t x119;
+  fiat_p256_uint1 x120;
+  fiat_p256_addcarryx_u32(&x119, &x120, x118, x101, x69);
+  uint32_t x121;
+  fiat_p256_uint1 x122;
+  fiat_p256_addcarryx_u32(&x121, &x122, x120, x103, x71);
+  uint32_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u32(&x123, &x124, x122, x105, (fiat_p256_uint1)x73);
+  uint32_t x125;
+  uint32_t x126;
+  fiat_p256_mulx_u32(&x125, &x126, x107, UINT32_C(0xffffffff));
+  uint32_t x127;
+  uint32_t x128;
+  fiat_p256_mulx_u32(&x127, &x128, x107, UINT32_C(0xffffffff));
+  uint32_t x129;
+  uint32_t x130;
+  fiat_p256_mulx_u32(&x129, &x130, x107, UINT32_C(0xffffffff));
+  uint32_t x131;
+  uint32_t x132;
+  fiat_p256_mulx_u32(&x131, &x132, x107, UINT32_C(0xffffffff));
+  uint32_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u32(&x133, &x134, 0x0, x129, x132);
+  uint32_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u32(&x135, &x136, x134, x127, x130);
+  uint32_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u32(&x137, &x138, x136, 0x0, x128);
+  uint32_t x139;
+  fiat_p256_uint1 x140;
+  fiat_p256_addcarryx_u32(&x139, &x140, 0x0, x131, x107);
+  uint32_t x141;
+  fiat_p256_uint1 x142;
+  fiat_p256_addcarryx_u32(&x141, &x142, x140, x133, x109);
+  uint32_t x143;
+  fiat_p256_uint1 x144;
+  fiat_p256_addcarryx_u32(&x143, &x144, x142, x135, x111);
+  uint32_t x145;
+  fiat_p256_uint1 x146;
+  fiat_p256_addcarryx_u32(&x145, &x146, x144, x137, x113);
+  uint32_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u32(&x147, &x148, x146, 0x0, x115);
+  uint32_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u32(&x149, &x150, x148, 0x0, x117);
+  uint32_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u32(&x151, &x152, x150, x107, x119);
+  uint32_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u32(&x153, &x154, x152, x125, x121);
+  uint32_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u32(&x155, &x156, x154, x126, x123);
+  uint32_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u32(&x157, &x158, x156, 0x0, x124);
+  uint32_t x159;
+  uint32_t x160;
+  fiat_p256_mulx_u32(&x159, &x160, x2, (arg2[7]));
+  uint32_t x161;
+  uint32_t x162;
+  fiat_p256_mulx_u32(&x161, &x162, x2, (arg2[6]));
+  uint32_t x163;
+  uint32_t x164;
+  fiat_p256_mulx_u32(&x163, &x164, x2, (arg2[5]));
+  uint32_t x165;
+  uint32_t x166;
+  fiat_p256_mulx_u32(&x165, &x166, x2, (arg2[4]));
+  uint32_t x167;
+  uint32_t x168;
+  fiat_p256_mulx_u32(&x167, &x168, x2, (arg2[3]));
+  uint32_t x169;
+  uint32_t x170;
+  fiat_p256_mulx_u32(&x169, &x170, x2, (arg2[2]));
+  uint32_t x171;
+  uint32_t x172;
+  fiat_p256_mulx_u32(&x171, &x172, x2, (arg2[1]));
+  uint32_t x173;
+  uint32_t x174;
+  fiat_p256_mulx_u32(&x173, &x174, x2, (arg2[0]));
+  uint32_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u32(&x175, &x176, 0x0, x171, x174);
+  uint32_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u32(&x177, &x178, x176, x169, x172);
+  uint32_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u32(&x179, &x180, x178, x167, x170);
+  uint32_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u32(&x181, &x182, x180, x165, x168);
+  uint32_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u32(&x183, &x184, x182, x163, x166);
+  uint32_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u32(&x185, &x186, x184, x161, x164);
+  uint32_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_addcarryx_u32(&x187, &x188, x186, x159, x162);
+  uint32_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_addcarryx_u32(&x189, &x190, x188, 0x0, x160);
+  uint32_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_addcarryx_u32(&x191, &x192, 0x0, x173, x141);
+  uint32_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_addcarryx_u32(&x193, &x194, x192, x175, x143);
+  uint32_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_addcarryx_u32(&x195, &x196, x194, x177, x145);
+  uint32_t x197;
+  fiat_p256_uint1 x198;
+  fiat_p256_addcarryx_u32(&x197, &x198, x196, x179, x147);
+  uint32_t x199;
+  fiat_p256_uint1 x200;
+  fiat_p256_addcarryx_u32(&x199, &x200, x198, x181, x149);
+  uint32_t x201;
+  fiat_p256_uint1 x202;
+  fiat_p256_addcarryx_u32(&x201, &x202, x200, x183, x151);
+  uint32_t x203;
+  fiat_p256_uint1 x204;
+  fiat_p256_addcarryx_u32(&x203, &x204, x202, x185, x153);
+  uint32_t x205;
+  fiat_p256_uint1 x206;
+  fiat_p256_addcarryx_u32(&x205, &x206, x204, x187, x155);
+  uint32_t x207;
+  fiat_p256_uint1 x208;
+  fiat_p256_addcarryx_u32(&x207, &x208, x206, x189, x157);
+  uint32_t x209;
+  uint32_t x210;
+  fiat_p256_mulx_u32(&x209, &x210, x191, UINT32_C(0xffffffff));
+  uint32_t x211;
+  uint32_t x212;
+  fiat_p256_mulx_u32(&x211, &x212, x191, UINT32_C(0xffffffff));
+  uint32_t x213;
+  uint32_t x214;
+  fiat_p256_mulx_u32(&x213, &x214, x191, UINT32_C(0xffffffff));
+  uint32_t x215;
+  uint32_t x216;
+  fiat_p256_mulx_u32(&x215, &x216, x191, UINT32_C(0xffffffff));
+  uint32_t x217;
+  fiat_p256_uint1 x218;
+  fiat_p256_addcarryx_u32(&x217, &x218, 0x0, x213, x216);
+  uint32_t x219;
+  fiat_p256_uint1 x220;
+  fiat_p256_addcarryx_u32(&x219, &x220, x218, x211, x214);
+  uint32_t x221;
+  fiat_p256_uint1 x222;
+  fiat_p256_addcarryx_u32(&x221, &x222, x220, 0x0, x212);
+  uint32_t x223;
+  fiat_p256_uint1 x224;
+  fiat_p256_addcarryx_u32(&x223, &x224, 0x0, x215, x191);
+  uint32_t x225;
+  fiat_p256_uint1 x226;
+  fiat_p256_addcarryx_u32(&x225, &x226, x224, x217, x193);
+  uint32_t x227;
+  fiat_p256_uint1 x228;
+  fiat_p256_addcarryx_u32(&x227, &x228, x226, x219, x195);
+  uint32_t x229;
+  fiat_p256_uint1 x230;
+  fiat_p256_addcarryx_u32(&x229, &x230, x228, x221, x197);
+  uint32_t x231;
+  fiat_p256_uint1 x232;
+  fiat_p256_addcarryx_u32(&x231, &x232, x230, 0x0, x199);
+  uint32_t x233;
+  fiat_p256_uint1 x234;
+  fiat_p256_addcarryx_u32(&x233, &x234, x232, 0x0, x201);
+  uint32_t x235;
+  fiat_p256_uint1 x236;
+  fiat_p256_addcarryx_u32(&x235, &x236, x234, x191, x203);
+  uint32_t x237;
+  fiat_p256_uint1 x238;
+  fiat_p256_addcarryx_u32(&x237, &x238, x236, x209, x205);
+  uint32_t x239;
+  fiat_p256_uint1 x240;
+  fiat_p256_addcarryx_u32(&x239, &x240, x238, x210, x207);
+  uint32_t x241;
+  fiat_p256_uint1 x242;
+  fiat_p256_addcarryx_u32(&x241, &x242, x240, 0x0, x208);
+  uint32_t x243;
+  uint32_t x244;
+  fiat_p256_mulx_u32(&x243, &x244, x3, (arg2[7]));
+  uint32_t x245;
+  uint32_t x246;
+  fiat_p256_mulx_u32(&x245, &x246, x3, (arg2[6]));
+  uint32_t x247;
+  uint32_t x248;
+  fiat_p256_mulx_u32(&x247, &x248, x3, (arg2[5]));
+  uint32_t x249;
+  uint32_t x250;
+  fiat_p256_mulx_u32(&x249, &x250, x3, (arg2[4]));
+  uint32_t x251;
+  uint32_t x252;
+  fiat_p256_mulx_u32(&x251, &x252, x3, (arg2[3]));
+  uint32_t x253;
+  uint32_t x254;
+  fiat_p256_mulx_u32(&x253, &x254, x3, (arg2[2]));
+  uint32_t x255;
+  uint32_t x256;
+  fiat_p256_mulx_u32(&x255, &x256, x3, (arg2[1]));
+  uint32_t x257;
+  uint32_t x258;
+  fiat_p256_mulx_u32(&x257, &x258, x3, (arg2[0]));
+  uint32_t x259;
+  fiat_p256_uint1 x260;
+  fiat_p256_addcarryx_u32(&x259, &x260, 0x0, x255, x258);
+  uint32_t x261;
+  fiat_p256_uint1 x262;
+  fiat_p256_addcarryx_u32(&x261, &x262, x260, x253, x256);
+  uint32_t x263;
+  fiat_p256_uint1 x264;
+  fiat_p256_addcarryx_u32(&x263, &x264, x262, x251, x254);
+  uint32_t x265;
+  fiat_p256_uint1 x266;
+  fiat_p256_addcarryx_u32(&x265, &x266, x264, x249, x252);
+  uint32_t x267;
+  fiat_p256_uint1 x268;
+  fiat_p256_addcarryx_u32(&x267, &x268, x266, x247, x250);
+  uint32_t x269;
+  fiat_p256_uint1 x270;
+  fiat_p256_addcarryx_u32(&x269, &x270, x268, x245, x248);
+  uint32_t x271;
+  fiat_p256_uint1 x272;
+  fiat_p256_addcarryx_u32(&x271, &x272, x270, x243, x246);
+  uint32_t x273;
+  fiat_p256_uint1 x274;
+  fiat_p256_addcarryx_u32(&x273, &x274, x272, 0x0, x244);
+  uint32_t x275;
+  fiat_p256_uint1 x276;
+  fiat_p256_addcarryx_u32(&x275, &x276, 0x0, x257, x225);
+  uint32_t x277;
+  fiat_p256_uint1 x278;
+  fiat_p256_addcarryx_u32(&x277, &x278, x276, x259, x227);
+  uint32_t x279;
+  fiat_p256_uint1 x280;
+  fiat_p256_addcarryx_u32(&x279, &x280, x278, x261, x229);
+  uint32_t x281;
+  fiat_p256_uint1 x282;
+  fiat_p256_addcarryx_u32(&x281, &x282, x280, x263, x231);
+  uint32_t x283;
+  fiat_p256_uint1 x284;
+  fiat_p256_addcarryx_u32(&x283, &x284, x282, x265, x233);
+  uint32_t x285;
+  fiat_p256_uint1 x286;
+  fiat_p256_addcarryx_u32(&x285, &x286, x284, x267, x235);
+  uint32_t x287;
+  fiat_p256_uint1 x288;
+  fiat_p256_addcarryx_u32(&x287, &x288, x286, x269, x237);
+  uint32_t x289;
+  fiat_p256_uint1 x290;
+  fiat_p256_addcarryx_u32(&x289, &x290, x288, x271, x239);
+  uint32_t x291;
+  fiat_p256_uint1 x292;
+  fiat_p256_addcarryx_u32(&x291, &x292, x290, x273, x241);
+  uint32_t x293;
+  uint32_t x294;
+  fiat_p256_mulx_u32(&x293, &x294, x275, UINT32_C(0xffffffff));
+  uint32_t x295;
+  uint32_t x296;
+  fiat_p256_mulx_u32(&x295, &x296, x275, UINT32_C(0xffffffff));
+  uint32_t x297;
+  uint32_t x298;
+  fiat_p256_mulx_u32(&x297, &x298, x275, UINT32_C(0xffffffff));
+  uint32_t x299;
+  uint32_t x300;
+  fiat_p256_mulx_u32(&x299, &x300, x275, UINT32_C(0xffffffff));
+  uint32_t x301;
+  fiat_p256_uint1 x302;
+  fiat_p256_addcarryx_u32(&x301, &x302, 0x0, x297, x300);
+  uint32_t x303;
+  fiat_p256_uint1 x304;
+  fiat_p256_addcarryx_u32(&x303, &x304, x302, x295, x298);
+  uint32_t x305;
+  fiat_p256_uint1 x306;
+  fiat_p256_addcarryx_u32(&x305, &x306, x304, 0x0, x296);
+  uint32_t x307;
+  fiat_p256_uint1 x308;
+  fiat_p256_addcarryx_u32(&x307, &x308, 0x0, x299, x275);
+  uint32_t x309;
+  fiat_p256_uint1 x310;
+  fiat_p256_addcarryx_u32(&x309, &x310, x308, x301, x277);
+  uint32_t x311;
+  fiat_p256_uint1 x312;
+  fiat_p256_addcarryx_u32(&x311, &x312, x310, x303, x279);
+  uint32_t x313;
+  fiat_p256_uint1 x314;
+  fiat_p256_addcarryx_u32(&x313, &x314, x312, x305, x281);
+  uint32_t x315;
+  fiat_p256_uint1 x316;
+  fiat_p256_addcarryx_u32(&x315, &x316, x314, 0x0, x283);
+  uint32_t x317;
+  fiat_p256_uint1 x318;
+  fiat_p256_addcarryx_u32(&x317, &x318, x316, 0x0, x285);
+  uint32_t x319;
+  fiat_p256_uint1 x320;
+  fiat_p256_addcarryx_u32(&x319, &x320, x318, x275, x287);
+  uint32_t x321;
+  fiat_p256_uint1 x322;
+  fiat_p256_addcarryx_u32(&x321, &x322, x320, x293, x289);
+  uint32_t x323;
+  fiat_p256_uint1 x324;
+  fiat_p256_addcarryx_u32(&x323, &x324, x322, x294, x291);
+  uint32_t x325;
+  fiat_p256_uint1 x326;
+  fiat_p256_addcarryx_u32(&x325, &x326, x324, 0x0, x292);
+  uint32_t x327;
+  uint32_t x328;
+  fiat_p256_mulx_u32(&x327, &x328, x4, (arg2[7]));
+  uint32_t x329;
+  uint32_t x330;
+  fiat_p256_mulx_u32(&x329, &x330, x4, (arg2[6]));
+  uint32_t x331;
+  uint32_t x332;
+  fiat_p256_mulx_u32(&x331, &x332, x4, (arg2[5]));
+  uint32_t x333;
+  uint32_t x334;
+  fiat_p256_mulx_u32(&x333, &x334, x4, (arg2[4]));
+  uint32_t x335;
+  uint32_t x336;
+  fiat_p256_mulx_u32(&x335, &x336, x4, (arg2[3]));
+  uint32_t x337;
+  uint32_t x338;
+  fiat_p256_mulx_u32(&x337, &x338, x4, (arg2[2]));
+  uint32_t x339;
+  uint32_t x340;
+  fiat_p256_mulx_u32(&x339, &x340, x4, (arg2[1]));
+  uint32_t x341;
+  uint32_t x342;
+  fiat_p256_mulx_u32(&x341, &x342, x4, (arg2[0]));
+  uint32_t x343;
+  fiat_p256_uint1 x344;
+  fiat_p256_addcarryx_u32(&x343, &x344, 0x0, x339, x342);
+  uint32_t x345;
+  fiat_p256_uint1 x346;
+  fiat_p256_addcarryx_u32(&x345, &x346, x344, x337, x340);
+  uint32_t x347;
+  fiat_p256_uint1 x348;
+  fiat_p256_addcarryx_u32(&x347, &x348, x346, x335, x338);
+  uint32_t x349;
+  fiat_p256_uint1 x350;
+  fiat_p256_addcarryx_u32(&x349, &x350, x348, x333, x336);
+  uint32_t x351;
+  fiat_p256_uint1 x352;
+  fiat_p256_addcarryx_u32(&x351, &x352, x350, x331, x334);
+  uint32_t x353;
+  fiat_p256_uint1 x354;
+  fiat_p256_addcarryx_u32(&x353, &x354, x352, x329, x332);
+  uint32_t x355;
+  fiat_p256_uint1 x356;
+  fiat_p256_addcarryx_u32(&x355, &x356, x354, x327, x330);
+  uint32_t x357;
+  fiat_p256_uint1 x358;
+  fiat_p256_addcarryx_u32(&x357, &x358, x356, 0x0, x328);
+  uint32_t x359;
+  fiat_p256_uint1 x360;
+  fiat_p256_addcarryx_u32(&x359, &x360, 0x0, x341, x309);
+  uint32_t x361;
+  fiat_p256_uint1 x362;
+  fiat_p256_addcarryx_u32(&x361, &x362, x360, x343, x311);
+  uint32_t x363;
+  fiat_p256_uint1 x364;
+  fiat_p256_addcarryx_u32(&x363, &x364, x362, x345, x313);
+  uint32_t x365;
+  fiat_p256_uint1 x366;
+  fiat_p256_addcarryx_u32(&x365, &x366, x364, x347, x315);
+  uint32_t x367;
+  fiat_p256_uint1 x368;
+  fiat_p256_addcarryx_u32(&x367, &x368, x366, x349, x317);
+  uint32_t x369;
+  fiat_p256_uint1 x370;
+  fiat_p256_addcarryx_u32(&x369, &x370, x368, x351, x319);
+  uint32_t x371;
+  fiat_p256_uint1 x372;
+  fiat_p256_addcarryx_u32(&x371, &x372, x370, x353, x321);
+  uint32_t x373;
+  fiat_p256_uint1 x374;
+  fiat_p256_addcarryx_u32(&x373, &x374, x372, x355, x323);
+  uint32_t x375;
+  fiat_p256_uint1 x376;
+  fiat_p256_addcarryx_u32(&x375, &x376, x374, x357, x325);
+  uint32_t x377;
+  uint32_t x378;
+  fiat_p256_mulx_u32(&x377, &x378, x359, UINT32_C(0xffffffff));
+  uint32_t x379;
+  uint32_t x380;
+  fiat_p256_mulx_u32(&x379, &x380, x359, UINT32_C(0xffffffff));
+  uint32_t x381;
+  uint32_t x382;
+  fiat_p256_mulx_u32(&x381, &x382, x359, UINT32_C(0xffffffff));
+  uint32_t x383;
+  uint32_t x384;
+  fiat_p256_mulx_u32(&x383, &x384, x359, UINT32_C(0xffffffff));
+  uint32_t x385;
+  fiat_p256_uint1 x386;
+  fiat_p256_addcarryx_u32(&x385, &x386, 0x0, x381, x384);
+  uint32_t x387;
+  fiat_p256_uint1 x388;
+  fiat_p256_addcarryx_u32(&x387, &x388, x386, x379, x382);
+  uint32_t x389;
+  fiat_p256_uint1 x390;
+  fiat_p256_addcarryx_u32(&x389, &x390, x388, 0x0, x380);
+  uint32_t x391;
+  fiat_p256_uint1 x392;
+  fiat_p256_addcarryx_u32(&x391, &x392, 0x0, x383, x359);
+  uint32_t x393;
+  fiat_p256_uint1 x394;
+  fiat_p256_addcarryx_u32(&x393, &x394, x392, x385, x361);
+  uint32_t x395;
+  fiat_p256_uint1 x396;
+  fiat_p256_addcarryx_u32(&x395, &x396, x394, x387, x363);
+  uint32_t x397;
+  fiat_p256_uint1 x398;
+  fiat_p256_addcarryx_u32(&x397, &x398, x396, x389, x365);
+  uint32_t x399;
+  fiat_p256_uint1 x400;
+  fiat_p256_addcarryx_u32(&x399, &x400, x398, 0x0, x367);
+  uint32_t x401;
+  fiat_p256_uint1 x402;
+  fiat_p256_addcarryx_u32(&x401, &x402, x400, 0x0, x369);
+  uint32_t x403;
+  fiat_p256_uint1 x404;
+  fiat_p256_addcarryx_u32(&x403, &x404, x402, x359, x371);
+  uint32_t x405;
+  fiat_p256_uint1 x406;
+  fiat_p256_addcarryx_u32(&x405, &x406, x404, x377, x373);
+  uint32_t x407;
+  fiat_p256_uint1 x408;
+  fiat_p256_addcarryx_u32(&x407, &x408, x406, x378, x375);
+  uint32_t x409;
+  fiat_p256_uint1 x410;
+  fiat_p256_addcarryx_u32(&x409, &x410, x408, 0x0, x376);
+  uint32_t x411;
+  uint32_t x412;
+  fiat_p256_mulx_u32(&x411, &x412, x5, (arg2[7]));
+  uint32_t x413;
+  uint32_t x414;
+  fiat_p256_mulx_u32(&x413, &x414, x5, (arg2[6]));
+  uint32_t x415;
+  uint32_t x416;
+  fiat_p256_mulx_u32(&x415, &x416, x5, (arg2[5]));
+  uint32_t x417;
+  uint32_t x418;
+  fiat_p256_mulx_u32(&x417, &x418, x5, (arg2[4]));
+  uint32_t x419;
+  uint32_t x420;
+  fiat_p256_mulx_u32(&x419, &x420, x5, (arg2[3]));
+  uint32_t x421;
+  uint32_t x422;
+  fiat_p256_mulx_u32(&x421, &x422, x5, (arg2[2]));
+  uint32_t x423;
+  uint32_t x424;
+  fiat_p256_mulx_u32(&x423, &x424, x5, (arg2[1]));
+  uint32_t x425;
+  uint32_t x426;
+  fiat_p256_mulx_u32(&x425, &x426, x5, (arg2[0]));
+  uint32_t x427;
+  fiat_p256_uint1 x428;
+  fiat_p256_addcarryx_u32(&x427, &x428, 0x0, x423, x426);
+  uint32_t x429;
+  fiat_p256_uint1 x430;
+  fiat_p256_addcarryx_u32(&x429, &x430, x428, x421, x424);
+  uint32_t x431;
+  fiat_p256_uint1 x432;
+  fiat_p256_addcarryx_u32(&x431, &x432, x430, x419, x422);
+  uint32_t x433;
+  fiat_p256_uint1 x434;
+  fiat_p256_addcarryx_u32(&x433, &x434, x432, x417, x420);
+  uint32_t x435;
+  fiat_p256_uint1 x436;
+  fiat_p256_addcarryx_u32(&x435, &x436, x434, x415, x418);
+  uint32_t x437;
+  fiat_p256_uint1 x438;
+  fiat_p256_addcarryx_u32(&x437, &x438, x436, x413, x416);
+  uint32_t x439;
+  fiat_p256_uint1 x440;
+  fiat_p256_addcarryx_u32(&x439, &x440, x438, x411, x414);
+  uint32_t x441;
+  fiat_p256_uint1 x442;
+  fiat_p256_addcarryx_u32(&x441, &x442, x440, 0x0, x412);
+  uint32_t x443;
+  fiat_p256_uint1 x444;
+  fiat_p256_addcarryx_u32(&x443, &x444, 0x0, x425, x393);
+  uint32_t x445;
+  fiat_p256_uint1 x446;
+  fiat_p256_addcarryx_u32(&x445, &x446, x444, x427, x395);
+  uint32_t x447;
+  fiat_p256_uint1 x448;
+  fiat_p256_addcarryx_u32(&x447, &x448, x446, x429, x397);
+  uint32_t x449;
+  fiat_p256_uint1 x450;
+  fiat_p256_addcarryx_u32(&x449, &x450, x448, x431, x399);
+  uint32_t x451;
+  fiat_p256_uint1 x452;
+  fiat_p256_addcarryx_u32(&x451, &x452, x450, x433, x401);
+  uint32_t x453;
+  fiat_p256_uint1 x454;
+  fiat_p256_addcarryx_u32(&x453, &x454, x452, x435, x403);
+  uint32_t x455;
+  fiat_p256_uint1 x456;
+  fiat_p256_addcarryx_u32(&x455, &x456, x454, x437, x405);
+  uint32_t x457;
+  fiat_p256_uint1 x458;
+  fiat_p256_addcarryx_u32(&x457, &x458, x456, x439, x407);
+  uint32_t x459;
+  fiat_p256_uint1 x460;
+  fiat_p256_addcarryx_u32(&x459, &x460, x458, x441, x409);
+  uint32_t x461;
+  uint32_t x462;
+  fiat_p256_mulx_u32(&x461, &x462, x443, UINT32_C(0xffffffff));
+  uint32_t x463;
+  uint32_t x464;
+  fiat_p256_mulx_u32(&x463, &x464, x443, UINT32_C(0xffffffff));
+  uint32_t x465;
+  uint32_t x466;
+  fiat_p256_mulx_u32(&x465, &x466, x443, UINT32_C(0xffffffff));
+  uint32_t x467;
+  uint32_t x468;
+  fiat_p256_mulx_u32(&x467, &x468, x443, UINT32_C(0xffffffff));
+  uint32_t x469;
+  fiat_p256_uint1 x470;
+  fiat_p256_addcarryx_u32(&x469, &x470, 0x0, x465, x468);
+  uint32_t x471;
+  fiat_p256_uint1 x472;
+  fiat_p256_addcarryx_u32(&x471, &x472, x470, x463, x466);
+  uint32_t x473;
+  fiat_p256_uint1 x474;
+  fiat_p256_addcarryx_u32(&x473, &x474, x472, 0x0, x464);
+  uint32_t x475;
+  fiat_p256_uint1 x476;
+  fiat_p256_addcarryx_u32(&x475, &x476, 0x0, x467, x443);
+  uint32_t x477;
+  fiat_p256_uint1 x478;
+  fiat_p256_addcarryx_u32(&x477, &x478, x476, x469, x445);
+  uint32_t x479;
+  fiat_p256_uint1 x480;
+  fiat_p256_addcarryx_u32(&x479, &x480, x478, x471, x447);
+  uint32_t x481;
+  fiat_p256_uint1 x482;
+  fiat_p256_addcarryx_u32(&x481, &x482, x480, x473, x449);
+  uint32_t x483;
+  fiat_p256_uint1 x484;
+  fiat_p256_addcarryx_u32(&x483, &x484, x482, 0x0, x451);
+  uint32_t x485;
+  fiat_p256_uint1 x486;
+  fiat_p256_addcarryx_u32(&x485, &x486, x484, 0x0, x453);
+  uint32_t x487;
+  fiat_p256_uint1 x488;
+  fiat_p256_addcarryx_u32(&x487, &x488, x486, x443, x455);
+  uint32_t x489;
+  fiat_p256_uint1 x490;
+  fiat_p256_addcarryx_u32(&x489, &x490, x488, x461, x457);
+  uint32_t x491;
+  fiat_p256_uint1 x492;
+  fiat_p256_addcarryx_u32(&x491, &x492, x490, x462, x459);
+  uint32_t x493;
+  fiat_p256_uint1 x494;
+  fiat_p256_addcarryx_u32(&x493, &x494, x492, 0x0, x460);
+  uint32_t x495;
+  uint32_t x496;
+  fiat_p256_mulx_u32(&x495, &x496, x6, (arg2[7]));
+  uint32_t x497;
+  uint32_t x498;
+  fiat_p256_mulx_u32(&x497, &x498, x6, (arg2[6]));
+  uint32_t x499;
+  uint32_t x500;
+  fiat_p256_mulx_u32(&x499, &x500, x6, (arg2[5]));
+  uint32_t x501;
+  uint32_t x502;
+  fiat_p256_mulx_u32(&x501, &x502, x6, (arg2[4]));
+  uint32_t x503;
+  uint32_t x504;
+  fiat_p256_mulx_u32(&x503, &x504, x6, (arg2[3]));
+  uint32_t x505;
+  uint32_t x506;
+  fiat_p256_mulx_u32(&x505, &x506, x6, (arg2[2]));
+  uint32_t x507;
+  uint32_t x508;
+  fiat_p256_mulx_u32(&x507, &x508, x6, (arg2[1]));
+  uint32_t x509;
+  uint32_t x510;
+  fiat_p256_mulx_u32(&x509, &x510, x6, (arg2[0]));
+  uint32_t x511;
+  fiat_p256_uint1 x512;
+  fiat_p256_addcarryx_u32(&x511, &x512, 0x0, x507, x510);
+  uint32_t x513;
+  fiat_p256_uint1 x514;
+  fiat_p256_addcarryx_u32(&x513, &x514, x512, x505, x508);
+  uint32_t x515;
+  fiat_p256_uint1 x516;
+  fiat_p256_addcarryx_u32(&x515, &x516, x514, x503, x506);
+  uint32_t x517;
+  fiat_p256_uint1 x518;
+  fiat_p256_addcarryx_u32(&x517, &x518, x516, x501, x504);
+  uint32_t x519;
+  fiat_p256_uint1 x520;
+  fiat_p256_addcarryx_u32(&x519, &x520, x518, x499, x502);
+  uint32_t x521;
+  fiat_p256_uint1 x522;
+  fiat_p256_addcarryx_u32(&x521, &x522, x520, x497, x500);
+  uint32_t x523;
+  fiat_p256_uint1 x524;
+  fiat_p256_addcarryx_u32(&x523, &x524, x522, x495, x498);
+  uint32_t x525;
+  fiat_p256_uint1 x526;
+  fiat_p256_addcarryx_u32(&x525, &x526, x524, 0x0, x496);
+  uint32_t x527;
+  fiat_p256_uint1 x528;
+  fiat_p256_addcarryx_u32(&x527, &x528, 0x0, x509, x477);
+  uint32_t x529;
+  fiat_p256_uint1 x530;
+  fiat_p256_addcarryx_u32(&x529, &x530, x528, x511, x479);
+  uint32_t x531;
+  fiat_p256_uint1 x532;
+  fiat_p256_addcarryx_u32(&x531, &x532, x530, x513, x481);
+  uint32_t x533;
+  fiat_p256_uint1 x534;
+  fiat_p256_addcarryx_u32(&x533, &x534, x532, x515, x483);
+  uint32_t x535;
+  fiat_p256_uint1 x536;
+  fiat_p256_addcarryx_u32(&x535, &x536, x534, x517, x485);
+  uint32_t x537;
+  fiat_p256_uint1 x538;
+  fiat_p256_addcarryx_u32(&x537, &x538, x536, x519, x487);
+  uint32_t x539;
+  fiat_p256_uint1 x540;
+  fiat_p256_addcarryx_u32(&x539, &x540, x538, x521, x489);
+  uint32_t x541;
+  fiat_p256_uint1 x542;
+  fiat_p256_addcarryx_u32(&x541, &x542, x540, x523, x491);
+  uint32_t x543;
+  fiat_p256_uint1 x544;
+  fiat_p256_addcarryx_u32(&x543, &x544, x542, x525, x493);
+  uint32_t x545;
+  uint32_t x546;
+  fiat_p256_mulx_u32(&x545, &x546, x527, UINT32_C(0xffffffff));
+  uint32_t x547;
+  uint32_t x548;
+  fiat_p256_mulx_u32(&x547, &x548, x527, UINT32_C(0xffffffff));
+  uint32_t x549;
+  uint32_t x550;
+  fiat_p256_mulx_u32(&x549, &x550, x527, UINT32_C(0xffffffff));
+  uint32_t x551;
+  uint32_t x552;
+  fiat_p256_mulx_u32(&x551, &x552, x527, UINT32_C(0xffffffff));
+  uint32_t x553;
+  fiat_p256_uint1 x554;
+  fiat_p256_addcarryx_u32(&x553, &x554, 0x0, x549, x552);
+  uint32_t x555;
+  fiat_p256_uint1 x556;
+  fiat_p256_addcarryx_u32(&x555, &x556, x554, x547, x550);
+  uint32_t x557;
+  fiat_p256_uint1 x558;
+  fiat_p256_addcarryx_u32(&x557, &x558, x556, 0x0, x548);
+  uint32_t x559;
+  fiat_p256_uint1 x560;
+  fiat_p256_addcarryx_u32(&x559, &x560, 0x0, x551, x527);
+  uint32_t x561;
+  fiat_p256_uint1 x562;
+  fiat_p256_addcarryx_u32(&x561, &x562, x560, x553, x529);
+  uint32_t x563;
+  fiat_p256_uint1 x564;
+  fiat_p256_addcarryx_u32(&x563, &x564, x562, x555, x531);
+  uint32_t x565;
+  fiat_p256_uint1 x566;
+  fiat_p256_addcarryx_u32(&x565, &x566, x564, x557, x533);
+  uint32_t x567;
+  fiat_p256_uint1 x568;
+  fiat_p256_addcarryx_u32(&x567, &x568, x566, 0x0, x535);
+  uint32_t x569;
+  fiat_p256_uint1 x570;
+  fiat_p256_addcarryx_u32(&x569, &x570, x568, 0x0, x537);
+  uint32_t x571;
+  fiat_p256_uint1 x572;
+  fiat_p256_addcarryx_u32(&x571, &x572, x570, x527, x539);
+  uint32_t x573;
+  fiat_p256_uint1 x574;
+  fiat_p256_addcarryx_u32(&x573, &x574, x572, x545, x541);
+  uint32_t x575;
+  fiat_p256_uint1 x576;
+  fiat_p256_addcarryx_u32(&x575, &x576, x574, x546, x543);
+  uint32_t x577;
+  fiat_p256_uint1 x578;
+  fiat_p256_addcarryx_u32(&x577, &x578, x576, 0x0, x544);
+  uint32_t x579;
+  uint32_t x580;
+  fiat_p256_mulx_u32(&x579, &x580, x7, (arg2[7]));
+  uint32_t x581;
+  uint32_t x582;
+  fiat_p256_mulx_u32(&x581, &x582, x7, (arg2[6]));
+  uint32_t x583;
+  uint32_t x584;
+  fiat_p256_mulx_u32(&x583, &x584, x7, (arg2[5]));
+  uint32_t x585;
+  uint32_t x586;
+  fiat_p256_mulx_u32(&x585, &x586, x7, (arg2[4]));
+  uint32_t x587;
+  uint32_t x588;
+  fiat_p256_mulx_u32(&x587, &x588, x7, (arg2[3]));
+  uint32_t x589;
+  uint32_t x590;
+  fiat_p256_mulx_u32(&x589, &x590, x7, (arg2[2]));
+  uint32_t x591;
+  uint32_t x592;
+  fiat_p256_mulx_u32(&x591, &x592, x7, (arg2[1]));
+  uint32_t x593;
+  uint32_t x594;
+  fiat_p256_mulx_u32(&x593, &x594, x7, (arg2[0]));
+  uint32_t x595;
+  fiat_p256_uint1 x596;
+  fiat_p256_addcarryx_u32(&x595, &x596, 0x0, x591, x594);
+  uint32_t x597;
+  fiat_p256_uint1 x598;
+  fiat_p256_addcarryx_u32(&x597, &x598, x596, x589, x592);
+  uint32_t x599;
+  fiat_p256_uint1 x600;
+  fiat_p256_addcarryx_u32(&x599, &x600, x598, x587, x590);
+  uint32_t x601;
+  fiat_p256_uint1 x602;
+  fiat_p256_addcarryx_u32(&x601, &x602, x600, x585, x588);
+  uint32_t x603;
+  fiat_p256_uint1 x604;
+  fiat_p256_addcarryx_u32(&x603, &x604, x602, x583, x586);
+  uint32_t x605;
+  fiat_p256_uint1 x606;
+  fiat_p256_addcarryx_u32(&x605, &x606, x604, x581, x584);
+  uint32_t x607;
+  fiat_p256_uint1 x608;
+  fiat_p256_addcarryx_u32(&x607, &x608, x606, x579, x582);
+  uint32_t x609;
+  fiat_p256_uint1 x610;
+  fiat_p256_addcarryx_u32(&x609, &x610, x608, 0x0, x580);
+  uint32_t x611;
+  fiat_p256_uint1 x612;
+  fiat_p256_addcarryx_u32(&x611, &x612, 0x0, x593, x561);
+  uint32_t x613;
+  fiat_p256_uint1 x614;
+  fiat_p256_addcarryx_u32(&x613, &x614, x612, x595, x563);
+  uint32_t x615;
+  fiat_p256_uint1 x616;
+  fiat_p256_addcarryx_u32(&x615, &x616, x614, x597, x565);
+  uint32_t x617;
+  fiat_p256_uint1 x618;
+  fiat_p256_addcarryx_u32(&x617, &x618, x616, x599, x567);
+  uint32_t x619;
+  fiat_p256_uint1 x620;
+  fiat_p256_addcarryx_u32(&x619, &x620, x618, x601, x569);
+  uint32_t x621;
+  fiat_p256_uint1 x622;
+  fiat_p256_addcarryx_u32(&x621, &x622, x620, x603, x571);
+  uint32_t x623;
+  fiat_p256_uint1 x624;
+  fiat_p256_addcarryx_u32(&x623, &x624, x622, x605, x573);
+  uint32_t x625;
+  fiat_p256_uint1 x626;
+  fiat_p256_addcarryx_u32(&x625, &x626, x624, x607, x575);
+  uint32_t x627;
+  fiat_p256_uint1 x628;
+  fiat_p256_addcarryx_u32(&x627, &x628, x626, x609, x577);
+  uint32_t x629;
+  uint32_t x630;
+  fiat_p256_mulx_u32(&x629, &x630, x611, UINT32_C(0xffffffff));
+  uint32_t x631;
+  uint32_t x632;
+  fiat_p256_mulx_u32(&x631, &x632, x611, UINT32_C(0xffffffff));
+  uint32_t x633;
+  uint32_t x634;
+  fiat_p256_mulx_u32(&x633, &x634, x611, UINT32_C(0xffffffff));
+  uint32_t x635;
+  uint32_t x636;
+  fiat_p256_mulx_u32(&x635, &x636, x611, UINT32_C(0xffffffff));
+  uint32_t x637;
+  fiat_p256_uint1 x638;
+  fiat_p256_addcarryx_u32(&x637, &x638, 0x0, x633, x636);
+  uint32_t x639;
+  fiat_p256_uint1 x640;
+  fiat_p256_addcarryx_u32(&x639, &x640, x638, x631, x634);
+  uint32_t x641;
+  fiat_p256_uint1 x642;
+  fiat_p256_addcarryx_u32(&x641, &x642, x640, 0x0, x632);
+  uint32_t x643;
+  fiat_p256_uint1 x644;
+  fiat_p256_addcarryx_u32(&x643, &x644, 0x0, x635, x611);
+  uint32_t x645;
+  fiat_p256_uint1 x646;
+  fiat_p256_addcarryx_u32(&x645, &x646, x644, x637, x613);
+  uint32_t x647;
+  fiat_p256_uint1 x648;
+  fiat_p256_addcarryx_u32(&x647, &x648, x646, x639, x615);
+  uint32_t x649;
+  fiat_p256_uint1 x650;
+  fiat_p256_addcarryx_u32(&x649, &x650, x648, x641, x617);
+  uint32_t x651;
+  fiat_p256_uint1 x652;
+  fiat_p256_addcarryx_u32(&x651, &x652, x650, 0x0, x619);
+  uint32_t x653;
+  fiat_p256_uint1 x654;
+  fiat_p256_addcarryx_u32(&x653, &x654, x652, 0x0, x621);
+  uint32_t x655;
+  fiat_p256_uint1 x656;
+  fiat_p256_addcarryx_u32(&x655, &x656, x654, x611, x623);
+  uint32_t x657;
+  fiat_p256_uint1 x658;
+  fiat_p256_addcarryx_u32(&x657, &x658, x656, x629, x625);
+  uint32_t x659;
+  fiat_p256_uint1 x660;
+  fiat_p256_addcarryx_u32(&x659, &x660, x658, x630, x627);
+  uint32_t x661;
+  fiat_p256_uint1 x662;
+  fiat_p256_addcarryx_u32(&x661, &x662, x660, 0x0, x628);
+  uint32_t x663;
+  fiat_p256_uint1 x664;
+  fiat_p256_subborrowx_u32(&x663, &x664, 0x0, x645, UINT32_C(0xffffffff));
+  uint32_t x665;
+  fiat_p256_uint1 x666;
+  fiat_p256_subborrowx_u32(&x665, &x666, x664, x647, UINT32_C(0xffffffff));
+  uint32_t x667;
+  fiat_p256_uint1 x668;
+  fiat_p256_subborrowx_u32(&x667, &x668, x666, x649, UINT32_C(0xffffffff));
+  uint32_t x669;
+  fiat_p256_uint1 x670;
+  fiat_p256_subborrowx_u32(&x669, &x670, x668, x651, 0x0);
+  uint32_t x671;
+  fiat_p256_uint1 x672;
+  fiat_p256_subborrowx_u32(&x671, &x672, x670, x653, 0x0);
+  uint32_t x673;
+  fiat_p256_uint1 x674;
+  fiat_p256_subborrowx_u32(&x673, &x674, x672, x655, 0x0);
+  uint32_t x675;
+  fiat_p256_uint1 x676;
+  fiat_p256_subborrowx_u32(&x675, &x676, x674, x657, 0x1);
+  uint32_t x677;
+  fiat_p256_uint1 x678;
+  fiat_p256_subborrowx_u32(&x677, &x678, x676, x659, UINT32_C(0xffffffff));
+  uint32_t x679;
+  fiat_p256_uint1 x680;
+  fiat_p256_subborrowx_u32(&x679, &x680, x678, x661, 0x0);
+  uint32_t x681;
+  fiat_p256_cmovznz_u32(&x681, x680, x663, x645);
+  uint32_t x682;
+  fiat_p256_cmovznz_u32(&x682, x680, x665, x647);
+  uint32_t x683;
+  fiat_p256_cmovznz_u32(&x683, x680, x667, x649);
+  uint32_t x684;
+  fiat_p256_cmovznz_u32(&x684, x680, x669, x651);
+  uint32_t x685;
+  fiat_p256_cmovznz_u32(&x685, x680, x671, x653);
+  uint32_t x686;
+  fiat_p256_cmovznz_u32(&x686, x680, x673, x655);
+  uint32_t x687;
+  fiat_p256_cmovznz_u32(&x687, x680, x675, x657);
+  uint32_t x688;
+  fiat_p256_cmovznz_u32(&x688, x680, x677, x659);
+  out1[0] = x681;
+  out1[1] = x682;
+  out1[2] = x683;
+  out1[3] = x684;
+  out1[4] = x685;
+  out1[5] = x686;
+  out1[6] = x687;
+  out1[7] = x688;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_square(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[1]);
+  uint32_t x2 = (arg1[2]);
+  uint32_t x3 = (arg1[3]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[5]);
+  uint32_t x6 = (arg1[6]);
+  uint32_t x7 = (arg1[7]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9;
+  uint32_t x10;
+  fiat_p256_mulx_u32(&x9, &x10, x8, (arg1[7]));
+  uint32_t x11;
+  uint32_t x12;
+  fiat_p256_mulx_u32(&x11, &x12, x8, (arg1[6]));
+  uint32_t x13;
+  uint32_t x14;
+  fiat_p256_mulx_u32(&x13, &x14, x8, (arg1[5]));
+  uint32_t x15;
+  uint32_t x16;
+  fiat_p256_mulx_u32(&x15, &x16, x8, (arg1[4]));
+  uint32_t x17;
+  uint32_t x18;
+  fiat_p256_mulx_u32(&x17, &x18, x8, (arg1[3]));
+  uint32_t x19;
+  uint32_t x20;
+  fiat_p256_mulx_u32(&x19, &x20, x8, (arg1[2]));
+  uint32_t x21;
+  uint32_t x22;
+  fiat_p256_mulx_u32(&x21, &x22, x8, (arg1[1]));
+  uint32_t x23;
+  uint32_t x24;
+  fiat_p256_mulx_u32(&x23, &x24, x8, (arg1[0]));
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_addcarryx_u32(&x25, &x26, 0x0, x21, x24);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u32(&x27, &x28, x26, x19, x22);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u32(&x29, &x30, x28, x17, x20);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u32(&x31, &x32, x30, x15, x18);
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u32(&x33, &x34, x32, x13, x16);
+  uint32_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u32(&x35, &x36, x34, x11, x14);
+  uint32_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u32(&x37, &x38, x36, x9, x12);
+  uint32_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u32(&x39, &x40, x38, 0x0, x10);
+  uint32_t x41;
+  uint32_t x42;
+  fiat_p256_mulx_u32(&x41, &x42, x23, UINT32_C(0xffffffff));
+  uint32_t x43;
+  uint32_t x44;
+  fiat_p256_mulx_u32(&x43, &x44, x23, UINT32_C(0xffffffff));
+  uint32_t x45;
+  uint32_t x46;
+  fiat_p256_mulx_u32(&x45, &x46, x23, UINT32_C(0xffffffff));
+  uint32_t x47;
+  uint32_t x48;
+  fiat_p256_mulx_u32(&x47, &x48, x23, UINT32_C(0xffffffff));
+  uint32_t x49;
+  fiat_p256_uint1 x50;
+  fiat_p256_addcarryx_u32(&x49, &x50, 0x0, x45, x48);
+  uint32_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u32(&x51, &x52, x50, x43, x46);
+  uint32_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u32(&x53, &x54, x52, 0x0, x44);
+  uint32_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u32(&x55, &x56, 0x0, x47, x23);
+  uint32_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u32(&x57, &x58, x56, x49, x25);
+  uint32_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u32(&x59, &x60, x58, x51, x27);
+  uint32_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u32(&x61, &x62, x60, x53, x29);
+  uint32_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u32(&x63, &x64, x62, 0x0, x31);
+  uint32_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u32(&x65, &x66, x64, 0x0, x33);
+  uint32_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u32(&x67, &x68, x66, x23, x35);
+  uint32_t x69;
+  fiat_p256_uint1 x70;
+  fiat_p256_addcarryx_u32(&x69, &x70, x68, x41, x37);
+  uint32_t x71;
+  fiat_p256_uint1 x72;
+  fiat_p256_addcarryx_u32(&x71, &x72, x70, x42, x39);
+  uint32_t x73;
+  fiat_p256_uint1 x74;
+  fiat_p256_addcarryx_u32(&x73, &x74, x72, 0x0, 0x0);
+  uint32_t x75;
+  uint32_t x76;
+  fiat_p256_mulx_u32(&x75, &x76, x1, (arg1[7]));
+  uint32_t x77;
+  uint32_t x78;
+  fiat_p256_mulx_u32(&x77, &x78, x1, (arg1[6]));
+  uint32_t x79;
+  uint32_t x80;
+  fiat_p256_mulx_u32(&x79, &x80, x1, (arg1[5]));
+  uint32_t x81;
+  uint32_t x82;
+  fiat_p256_mulx_u32(&x81, &x82, x1, (arg1[4]));
+  uint32_t x83;
+  uint32_t x84;
+  fiat_p256_mulx_u32(&x83, &x84, x1, (arg1[3]));
+  uint32_t x85;
+  uint32_t x86;
+  fiat_p256_mulx_u32(&x85, &x86, x1, (arg1[2]));
+  uint32_t x87;
+  uint32_t x88;
+  fiat_p256_mulx_u32(&x87, &x88, x1, (arg1[1]));
+  uint32_t x89;
+  uint32_t x90;
+  fiat_p256_mulx_u32(&x89, &x90, x1, (arg1[0]));
+  uint32_t x91;
+  fiat_p256_uint1 x92;
+  fiat_p256_addcarryx_u32(&x91, &x92, 0x0, x87, x90);
+  uint32_t x93;
+  fiat_p256_uint1 x94;
+  fiat_p256_addcarryx_u32(&x93, &x94, x92, x85, x88);
+  uint32_t x95;
+  fiat_p256_uint1 x96;
+  fiat_p256_addcarryx_u32(&x95, &x96, x94, x83, x86);
+  uint32_t x97;
+  fiat_p256_uint1 x98;
+  fiat_p256_addcarryx_u32(&x97, &x98, x96, x81, x84);
+  uint32_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u32(&x99, &x100, x98, x79, x82);
+  uint32_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u32(&x101, &x102, x100, x77, x80);
+  uint32_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u32(&x103, &x104, x102, x75, x78);
+  uint32_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u32(&x105, &x106, x104, 0x0, x76);
+  uint32_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u32(&x107, &x108, 0x0, x89, x57);
+  uint32_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u32(&x109, &x110, x108, x91, x59);
+  uint32_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u32(&x111, &x112, x110, x93, x61);
+  uint32_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u32(&x113, &x114, x112, x95, x63);
+  uint32_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u32(&x115, &x116, x114, x97, x65);
+  uint32_t x117;
+  fiat_p256_uint1 x118;
+  fiat_p256_addcarryx_u32(&x117, &x118, x116, x99, x67);
+  uint32_t x119;
+  fiat_p256_uint1 x120;
+  fiat_p256_addcarryx_u32(&x119, &x120, x118, x101, x69);
+  uint32_t x121;
+  fiat_p256_uint1 x122;
+  fiat_p256_addcarryx_u32(&x121, &x122, x120, x103, x71);
+  uint32_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u32(&x123, &x124, x122, x105, (fiat_p256_uint1)x73);
+  uint32_t x125;
+  uint32_t x126;
+  fiat_p256_mulx_u32(&x125, &x126, x107, UINT32_C(0xffffffff));
+  uint32_t x127;
+  uint32_t x128;
+  fiat_p256_mulx_u32(&x127, &x128, x107, UINT32_C(0xffffffff));
+  uint32_t x129;
+  uint32_t x130;
+  fiat_p256_mulx_u32(&x129, &x130, x107, UINT32_C(0xffffffff));
+  uint32_t x131;
+  uint32_t x132;
+  fiat_p256_mulx_u32(&x131, &x132, x107, UINT32_C(0xffffffff));
+  uint32_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u32(&x133, &x134, 0x0, x129, x132);
+  uint32_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u32(&x135, &x136, x134, x127, x130);
+  uint32_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u32(&x137, &x138, x136, 0x0, x128);
+  uint32_t x139;
+  fiat_p256_uint1 x140;
+  fiat_p256_addcarryx_u32(&x139, &x140, 0x0, x131, x107);
+  uint32_t x141;
+  fiat_p256_uint1 x142;
+  fiat_p256_addcarryx_u32(&x141, &x142, x140, x133, x109);
+  uint32_t x143;
+  fiat_p256_uint1 x144;
+  fiat_p256_addcarryx_u32(&x143, &x144, x142, x135, x111);
+  uint32_t x145;
+  fiat_p256_uint1 x146;
+  fiat_p256_addcarryx_u32(&x145, &x146, x144, x137, x113);
+  uint32_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u32(&x147, &x148, x146, 0x0, x115);
+  uint32_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u32(&x149, &x150, x148, 0x0, x117);
+  uint32_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u32(&x151, &x152, x150, x107, x119);
+  uint32_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u32(&x153, &x154, x152, x125, x121);
+  uint32_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u32(&x155, &x156, x154, x126, x123);
+  uint32_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u32(&x157, &x158, x156, 0x0, x124);
+  uint32_t x159;
+  uint32_t x160;
+  fiat_p256_mulx_u32(&x159, &x160, x2, (arg1[7]));
+  uint32_t x161;
+  uint32_t x162;
+  fiat_p256_mulx_u32(&x161, &x162, x2, (arg1[6]));
+  uint32_t x163;
+  uint32_t x164;
+  fiat_p256_mulx_u32(&x163, &x164, x2, (arg1[5]));
+  uint32_t x165;
+  uint32_t x166;
+  fiat_p256_mulx_u32(&x165, &x166, x2, (arg1[4]));
+  uint32_t x167;
+  uint32_t x168;
+  fiat_p256_mulx_u32(&x167, &x168, x2, (arg1[3]));
+  uint32_t x169;
+  uint32_t x170;
+  fiat_p256_mulx_u32(&x169, &x170, x2, (arg1[2]));
+  uint32_t x171;
+  uint32_t x172;
+  fiat_p256_mulx_u32(&x171, &x172, x2, (arg1[1]));
+  uint32_t x173;
+  uint32_t x174;
+  fiat_p256_mulx_u32(&x173, &x174, x2, (arg1[0]));
+  uint32_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u32(&x175, &x176, 0x0, x171, x174);
+  uint32_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u32(&x177, &x178, x176, x169, x172);
+  uint32_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u32(&x179, &x180, x178, x167, x170);
+  uint32_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u32(&x181, &x182, x180, x165, x168);
+  uint32_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u32(&x183, &x184, x182, x163, x166);
+  uint32_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u32(&x185, &x186, x184, x161, x164);
+  uint32_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_addcarryx_u32(&x187, &x188, x186, x159, x162);
+  uint32_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_addcarryx_u32(&x189, &x190, x188, 0x0, x160);
+  uint32_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_addcarryx_u32(&x191, &x192, 0x0, x173, x141);
+  uint32_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_addcarryx_u32(&x193, &x194, x192, x175, x143);
+  uint32_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_addcarryx_u32(&x195, &x196, x194, x177, x145);
+  uint32_t x197;
+  fiat_p256_uint1 x198;
+  fiat_p256_addcarryx_u32(&x197, &x198, x196, x179, x147);
+  uint32_t x199;
+  fiat_p256_uint1 x200;
+  fiat_p256_addcarryx_u32(&x199, &x200, x198, x181, x149);
+  uint32_t x201;
+  fiat_p256_uint1 x202;
+  fiat_p256_addcarryx_u32(&x201, &x202, x200, x183, x151);
+  uint32_t x203;
+  fiat_p256_uint1 x204;
+  fiat_p256_addcarryx_u32(&x203, &x204, x202, x185, x153);
+  uint32_t x205;
+  fiat_p256_uint1 x206;
+  fiat_p256_addcarryx_u32(&x205, &x206, x204, x187, x155);
+  uint32_t x207;
+  fiat_p256_uint1 x208;
+  fiat_p256_addcarryx_u32(&x207, &x208, x206, x189, x157);
+  uint32_t x209;
+  uint32_t x210;
+  fiat_p256_mulx_u32(&x209, &x210, x191, UINT32_C(0xffffffff));
+  uint32_t x211;
+  uint32_t x212;
+  fiat_p256_mulx_u32(&x211, &x212, x191, UINT32_C(0xffffffff));
+  uint32_t x213;
+  uint32_t x214;
+  fiat_p256_mulx_u32(&x213, &x214, x191, UINT32_C(0xffffffff));
+  uint32_t x215;
+  uint32_t x216;
+  fiat_p256_mulx_u32(&x215, &x216, x191, UINT32_C(0xffffffff));
+  uint32_t x217;
+  fiat_p256_uint1 x218;
+  fiat_p256_addcarryx_u32(&x217, &x218, 0x0, x213, x216);
+  uint32_t x219;
+  fiat_p256_uint1 x220;
+  fiat_p256_addcarryx_u32(&x219, &x220, x218, x211, x214);
+  uint32_t x221;
+  fiat_p256_uint1 x222;
+  fiat_p256_addcarryx_u32(&x221, &x222, x220, 0x0, x212);
+  uint32_t x223;
+  fiat_p256_uint1 x224;
+  fiat_p256_addcarryx_u32(&x223, &x224, 0x0, x215, x191);
+  uint32_t x225;
+  fiat_p256_uint1 x226;
+  fiat_p256_addcarryx_u32(&x225, &x226, x224, x217, x193);
+  uint32_t x227;
+  fiat_p256_uint1 x228;
+  fiat_p256_addcarryx_u32(&x227, &x228, x226, x219, x195);
+  uint32_t x229;
+  fiat_p256_uint1 x230;
+  fiat_p256_addcarryx_u32(&x229, &x230, x228, x221, x197);
+  uint32_t x231;
+  fiat_p256_uint1 x232;
+  fiat_p256_addcarryx_u32(&x231, &x232, x230, 0x0, x199);
+  uint32_t x233;
+  fiat_p256_uint1 x234;
+  fiat_p256_addcarryx_u32(&x233, &x234, x232, 0x0, x201);
+  uint32_t x235;
+  fiat_p256_uint1 x236;
+  fiat_p256_addcarryx_u32(&x235, &x236, x234, x191, x203);
+  uint32_t x237;
+  fiat_p256_uint1 x238;
+  fiat_p256_addcarryx_u32(&x237, &x238, x236, x209, x205);
+  uint32_t x239;
+  fiat_p256_uint1 x240;
+  fiat_p256_addcarryx_u32(&x239, &x240, x238, x210, x207);
+  uint32_t x241;
+  fiat_p256_uint1 x242;
+  fiat_p256_addcarryx_u32(&x241, &x242, x240, 0x0, x208);
+  uint32_t x243;
+  uint32_t x244;
+  fiat_p256_mulx_u32(&x243, &x244, x3, (arg1[7]));
+  uint32_t x245;
+  uint32_t x246;
+  fiat_p256_mulx_u32(&x245, &x246, x3, (arg1[6]));
+  uint32_t x247;
+  uint32_t x248;
+  fiat_p256_mulx_u32(&x247, &x248, x3, (arg1[5]));
+  uint32_t x249;
+  uint32_t x250;
+  fiat_p256_mulx_u32(&x249, &x250, x3, (arg1[4]));
+  uint32_t x251;
+  uint32_t x252;
+  fiat_p256_mulx_u32(&x251, &x252, x3, (arg1[3]));
+  uint32_t x253;
+  uint32_t x254;
+  fiat_p256_mulx_u32(&x253, &x254, x3, (arg1[2]));
+  uint32_t x255;
+  uint32_t x256;
+  fiat_p256_mulx_u32(&x255, &x256, x3, (arg1[1]));
+  uint32_t x257;
+  uint32_t x258;
+  fiat_p256_mulx_u32(&x257, &x258, x3, (arg1[0]));
+  uint32_t x259;
+  fiat_p256_uint1 x260;
+  fiat_p256_addcarryx_u32(&x259, &x260, 0x0, x255, x258);
+  uint32_t x261;
+  fiat_p256_uint1 x262;
+  fiat_p256_addcarryx_u32(&x261, &x262, x260, x253, x256);
+  uint32_t x263;
+  fiat_p256_uint1 x264;
+  fiat_p256_addcarryx_u32(&x263, &x264, x262, x251, x254);
+  uint32_t x265;
+  fiat_p256_uint1 x266;
+  fiat_p256_addcarryx_u32(&x265, &x266, x264, x249, x252);
+  uint32_t x267;
+  fiat_p256_uint1 x268;
+  fiat_p256_addcarryx_u32(&x267, &x268, x266, x247, x250);
+  uint32_t x269;
+  fiat_p256_uint1 x270;
+  fiat_p256_addcarryx_u32(&x269, &x270, x268, x245, x248);
+  uint32_t x271;
+  fiat_p256_uint1 x272;
+  fiat_p256_addcarryx_u32(&x271, &x272, x270, x243, x246);
+  uint32_t x273;
+  fiat_p256_uint1 x274;
+  fiat_p256_addcarryx_u32(&x273, &x274, x272, 0x0, x244);
+  uint32_t x275;
+  fiat_p256_uint1 x276;
+  fiat_p256_addcarryx_u32(&x275, &x276, 0x0, x257, x225);
+  uint32_t x277;
+  fiat_p256_uint1 x278;
+  fiat_p256_addcarryx_u32(&x277, &x278, x276, x259, x227);
+  uint32_t x279;
+  fiat_p256_uint1 x280;
+  fiat_p256_addcarryx_u32(&x279, &x280, x278, x261, x229);
+  uint32_t x281;
+  fiat_p256_uint1 x282;
+  fiat_p256_addcarryx_u32(&x281, &x282, x280, x263, x231);
+  uint32_t x283;
+  fiat_p256_uint1 x284;
+  fiat_p256_addcarryx_u32(&x283, &x284, x282, x265, x233);
+  uint32_t x285;
+  fiat_p256_uint1 x286;
+  fiat_p256_addcarryx_u32(&x285, &x286, x284, x267, x235);
+  uint32_t x287;
+  fiat_p256_uint1 x288;
+  fiat_p256_addcarryx_u32(&x287, &x288, x286, x269, x237);
+  uint32_t x289;
+  fiat_p256_uint1 x290;
+  fiat_p256_addcarryx_u32(&x289, &x290, x288, x271, x239);
+  uint32_t x291;
+  fiat_p256_uint1 x292;
+  fiat_p256_addcarryx_u32(&x291, &x292, x290, x273, x241);
+  uint32_t x293;
+  uint32_t x294;
+  fiat_p256_mulx_u32(&x293, &x294, x275, UINT32_C(0xffffffff));
+  uint32_t x295;
+  uint32_t x296;
+  fiat_p256_mulx_u32(&x295, &x296, x275, UINT32_C(0xffffffff));
+  uint32_t x297;
+  uint32_t x298;
+  fiat_p256_mulx_u32(&x297, &x298, x275, UINT32_C(0xffffffff));
+  uint32_t x299;
+  uint32_t x300;
+  fiat_p256_mulx_u32(&x299, &x300, x275, UINT32_C(0xffffffff));
+  uint32_t x301;
+  fiat_p256_uint1 x302;
+  fiat_p256_addcarryx_u32(&x301, &x302, 0x0, x297, x300);
+  uint32_t x303;
+  fiat_p256_uint1 x304;
+  fiat_p256_addcarryx_u32(&x303, &x304, x302, x295, x298);
+  uint32_t x305;
+  fiat_p256_uint1 x306;
+  fiat_p256_addcarryx_u32(&x305, &x306, x304, 0x0, x296);
+  uint32_t x307;
+  fiat_p256_uint1 x308;
+  fiat_p256_addcarryx_u32(&x307, &x308, 0x0, x299, x275);
+  uint32_t x309;
+  fiat_p256_uint1 x310;
+  fiat_p256_addcarryx_u32(&x309, &x310, x308, x301, x277);
+  uint32_t x311;
+  fiat_p256_uint1 x312;
+  fiat_p256_addcarryx_u32(&x311, &x312, x310, x303, x279);
+  uint32_t x313;
+  fiat_p256_uint1 x314;
+  fiat_p256_addcarryx_u32(&x313, &x314, x312, x305, x281);
+  uint32_t x315;
+  fiat_p256_uint1 x316;
+  fiat_p256_addcarryx_u32(&x315, &x316, x314, 0x0, x283);
+  uint32_t x317;
+  fiat_p256_uint1 x318;
+  fiat_p256_addcarryx_u32(&x317, &x318, x316, 0x0, x285);
+  uint32_t x319;
+  fiat_p256_uint1 x320;
+  fiat_p256_addcarryx_u32(&x319, &x320, x318, x275, x287);
+  uint32_t x321;
+  fiat_p256_uint1 x322;
+  fiat_p256_addcarryx_u32(&x321, &x322, x320, x293, x289);
+  uint32_t x323;
+  fiat_p256_uint1 x324;
+  fiat_p256_addcarryx_u32(&x323, &x324, x322, x294, x291);
+  uint32_t x325;
+  fiat_p256_uint1 x326;
+  fiat_p256_addcarryx_u32(&x325, &x326, x324, 0x0, x292);
+  uint32_t x327;
+  uint32_t x328;
+  fiat_p256_mulx_u32(&x327, &x328, x4, (arg1[7]));
+  uint32_t x329;
+  uint32_t x330;
+  fiat_p256_mulx_u32(&x329, &x330, x4, (arg1[6]));
+  uint32_t x331;
+  uint32_t x332;
+  fiat_p256_mulx_u32(&x331, &x332, x4, (arg1[5]));
+  uint32_t x333;
+  uint32_t x334;
+  fiat_p256_mulx_u32(&x333, &x334, x4, (arg1[4]));
+  uint32_t x335;
+  uint32_t x336;
+  fiat_p256_mulx_u32(&x335, &x336, x4, (arg1[3]));
+  uint32_t x337;
+  uint32_t x338;
+  fiat_p256_mulx_u32(&x337, &x338, x4, (arg1[2]));
+  uint32_t x339;
+  uint32_t x340;
+  fiat_p256_mulx_u32(&x339, &x340, x4, (arg1[1]));
+  uint32_t x341;
+  uint32_t x342;
+  fiat_p256_mulx_u32(&x341, &x342, x4, (arg1[0]));
+  uint32_t x343;
+  fiat_p256_uint1 x344;
+  fiat_p256_addcarryx_u32(&x343, &x344, 0x0, x339, x342);
+  uint32_t x345;
+  fiat_p256_uint1 x346;
+  fiat_p256_addcarryx_u32(&x345, &x346, x344, x337, x340);
+  uint32_t x347;
+  fiat_p256_uint1 x348;
+  fiat_p256_addcarryx_u32(&x347, &x348, x346, x335, x338);
+  uint32_t x349;
+  fiat_p256_uint1 x350;
+  fiat_p256_addcarryx_u32(&x349, &x350, x348, x333, x336);
+  uint32_t x351;
+  fiat_p256_uint1 x352;
+  fiat_p256_addcarryx_u32(&x351, &x352, x350, x331, x334);
+  uint32_t x353;
+  fiat_p256_uint1 x354;
+  fiat_p256_addcarryx_u32(&x353, &x354, x352, x329, x332);
+  uint32_t x355;
+  fiat_p256_uint1 x356;
+  fiat_p256_addcarryx_u32(&x355, &x356, x354, x327, x330);
+  uint32_t x357;
+  fiat_p256_uint1 x358;
+  fiat_p256_addcarryx_u32(&x357, &x358, x356, 0x0, x328);
+  uint32_t x359;
+  fiat_p256_uint1 x360;
+  fiat_p256_addcarryx_u32(&x359, &x360, 0x0, x341, x309);
+  uint32_t x361;
+  fiat_p256_uint1 x362;
+  fiat_p256_addcarryx_u32(&x361, &x362, x360, x343, x311);
+  uint32_t x363;
+  fiat_p256_uint1 x364;
+  fiat_p256_addcarryx_u32(&x363, &x364, x362, x345, x313);
+  uint32_t x365;
+  fiat_p256_uint1 x366;
+  fiat_p256_addcarryx_u32(&x365, &x366, x364, x347, x315);
+  uint32_t x367;
+  fiat_p256_uint1 x368;
+  fiat_p256_addcarryx_u32(&x367, &x368, x366, x349, x317);
+  uint32_t x369;
+  fiat_p256_uint1 x370;
+  fiat_p256_addcarryx_u32(&x369, &x370, x368, x351, x319);
+  uint32_t x371;
+  fiat_p256_uint1 x372;
+  fiat_p256_addcarryx_u32(&x371, &x372, x370, x353, x321);
+  uint32_t x373;
+  fiat_p256_uint1 x374;
+  fiat_p256_addcarryx_u32(&x373, &x374, x372, x355, x323);
+  uint32_t x375;
+  fiat_p256_uint1 x376;
+  fiat_p256_addcarryx_u32(&x375, &x376, x374, x357, x325);
+  uint32_t x377;
+  uint32_t x378;
+  fiat_p256_mulx_u32(&x377, &x378, x359, UINT32_C(0xffffffff));
+  uint32_t x379;
+  uint32_t x380;
+  fiat_p256_mulx_u32(&x379, &x380, x359, UINT32_C(0xffffffff));
+  uint32_t x381;
+  uint32_t x382;
+  fiat_p256_mulx_u32(&x381, &x382, x359, UINT32_C(0xffffffff));
+  uint32_t x383;
+  uint32_t x384;
+  fiat_p256_mulx_u32(&x383, &x384, x359, UINT32_C(0xffffffff));
+  uint32_t x385;
+  fiat_p256_uint1 x386;
+  fiat_p256_addcarryx_u32(&x385, &x386, 0x0, x381, x384);
+  uint32_t x387;
+  fiat_p256_uint1 x388;
+  fiat_p256_addcarryx_u32(&x387, &x388, x386, x379, x382);
+  uint32_t x389;
+  fiat_p256_uint1 x390;
+  fiat_p256_addcarryx_u32(&x389, &x390, x388, 0x0, x380);
+  uint32_t x391;
+  fiat_p256_uint1 x392;
+  fiat_p256_addcarryx_u32(&x391, &x392, 0x0, x383, x359);
+  uint32_t x393;
+  fiat_p256_uint1 x394;
+  fiat_p256_addcarryx_u32(&x393, &x394, x392, x385, x361);
+  uint32_t x395;
+  fiat_p256_uint1 x396;
+  fiat_p256_addcarryx_u32(&x395, &x396, x394, x387, x363);
+  uint32_t x397;
+  fiat_p256_uint1 x398;
+  fiat_p256_addcarryx_u32(&x397, &x398, x396, x389, x365);
+  uint32_t x399;
+  fiat_p256_uint1 x400;
+  fiat_p256_addcarryx_u32(&x399, &x400, x398, 0x0, x367);
+  uint32_t x401;
+  fiat_p256_uint1 x402;
+  fiat_p256_addcarryx_u32(&x401, &x402, x400, 0x0, x369);
+  uint32_t x403;
+  fiat_p256_uint1 x404;
+  fiat_p256_addcarryx_u32(&x403, &x404, x402, x359, x371);
+  uint32_t x405;
+  fiat_p256_uint1 x406;
+  fiat_p256_addcarryx_u32(&x405, &x406, x404, x377, x373);
+  uint32_t x407;
+  fiat_p256_uint1 x408;
+  fiat_p256_addcarryx_u32(&x407, &x408, x406, x378, x375);
+  uint32_t x409;
+  fiat_p256_uint1 x410;
+  fiat_p256_addcarryx_u32(&x409, &x410, x408, 0x0, x376);
+  uint32_t x411;
+  uint32_t x412;
+  fiat_p256_mulx_u32(&x411, &x412, x5, (arg1[7]));
+  uint32_t x413;
+  uint32_t x414;
+  fiat_p256_mulx_u32(&x413, &x414, x5, (arg1[6]));
+  uint32_t x415;
+  uint32_t x416;
+  fiat_p256_mulx_u32(&x415, &x416, x5, (arg1[5]));
+  uint32_t x417;
+  uint32_t x418;
+  fiat_p256_mulx_u32(&x417, &x418, x5, (arg1[4]));
+  uint32_t x419;
+  uint32_t x420;
+  fiat_p256_mulx_u32(&x419, &x420, x5, (arg1[3]));
+  uint32_t x421;
+  uint32_t x422;
+  fiat_p256_mulx_u32(&x421, &x422, x5, (arg1[2]));
+  uint32_t x423;
+  uint32_t x424;
+  fiat_p256_mulx_u32(&x423, &x424, x5, (arg1[1]));
+  uint32_t x425;
+  uint32_t x426;
+  fiat_p256_mulx_u32(&x425, &x426, x5, (arg1[0]));
+  uint32_t x427;
+  fiat_p256_uint1 x428;
+  fiat_p256_addcarryx_u32(&x427, &x428, 0x0, x423, x426);
+  uint32_t x429;
+  fiat_p256_uint1 x430;
+  fiat_p256_addcarryx_u32(&x429, &x430, x428, x421, x424);
+  uint32_t x431;
+  fiat_p256_uint1 x432;
+  fiat_p256_addcarryx_u32(&x431, &x432, x430, x419, x422);
+  uint32_t x433;
+  fiat_p256_uint1 x434;
+  fiat_p256_addcarryx_u32(&x433, &x434, x432, x417, x420);
+  uint32_t x435;
+  fiat_p256_uint1 x436;
+  fiat_p256_addcarryx_u32(&x435, &x436, x434, x415, x418);
+  uint32_t x437;
+  fiat_p256_uint1 x438;
+  fiat_p256_addcarryx_u32(&x437, &x438, x436, x413, x416);
+  uint32_t x439;
+  fiat_p256_uint1 x440;
+  fiat_p256_addcarryx_u32(&x439, &x440, x438, x411, x414);
+  uint32_t x441;
+  fiat_p256_uint1 x442;
+  fiat_p256_addcarryx_u32(&x441, &x442, x440, 0x0, x412);
+  uint32_t x443;
+  fiat_p256_uint1 x444;
+  fiat_p256_addcarryx_u32(&x443, &x444, 0x0, x425, x393);
+  uint32_t x445;
+  fiat_p256_uint1 x446;
+  fiat_p256_addcarryx_u32(&x445, &x446, x444, x427, x395);
+  uint32_t x447;
+  fiat_p256_uint1 x448;
+  fiat_p256_addcarryx_u32(&x447, &x448, x446, x429, x397);
+  uint32_t x449;
+  fiat_p256_uint1 x450;
+  fiat_p256_addcarryx_u32(&x449, &x450, x448, x431, x399);
+  uint32_t x451;
+  fiat_p256_uint1 x452;
+  fiat_p256_addcarryx_u32(&x451, &x452, x450, x433, x401);
+  uint32_t x453;
+  fiat_p256_uint1 x454;
+  fiat_p256_addcarryx_u32(&x453, &x454, x452, x435, x403);
+  uint32_t x455;
+  fiat_p256_uint1 x456;
+  fiat_p256_addcarryx_u32(&x455, &x456, x454, x437, x405);
+  uint32_t x457;
+  fiat_p256_uint1 x458;
+  fiat_p256_addcarryx_u32(&x457, &x458, x456, x439, x407);
+  uint32_t x459;
+  fiat_p256_uint1 x460;
+  fiat_p256_addcarryx_u32(&x459, &x460, x458, x441, x409);
+  uint32_t x461;
+  uint32_t x462;
+  fiat_p256_mulx_u32(&x461, &x462, x443, UINT32_C(0xffffffff));
+  uint32_t x463;
+  uint32_t x464;
+  fiat_p256_mulx_u32(&x463, &x464, x443, UINT32_C(0xffffffff));
+  uint32_t x465;
+  uint32_t x466;
+  fiat_p256_mulx_u32(&x465, &x466, x443, UINT32_C(0xffffffff));
+  uint32_t x467;
+  uint32_t x468;
+  fiat_p256_mulx_u32(&x467, &x468, x443, UINT32_C(0xffffffff));
+  uint32_t x469;
+  fiat_p256_uint1 x470;
+  fiat_p256_addcarryx_u32(&x469, &x470, 0x0, x465, x468);
+  uint32_t x471;
+  fiat_p256_uint1 x472;
+  fiat_p256_addcarryx_u32(&x471, &x472, x470, x463, x466);
+  uint32_t x473;
+  fiat_p256_uint1 x474;
+  fiat_p256_addcarryx_u32(&x473, &x474, x472, 0x0, x464);
+  uint32_t x475;
+  fiat_p256_uint1 x476;
+  fiat_p256_addcarryx_u32(&x475, &x476, 0x0, x467, x443);
+  uint32_t x477;
+  fiat_p256_uint1 x478;
+  fiat_p256_addcarryx_u32(&x477, &x478, x476, x469, x445);
+  uint32_t x479;
+  fiat_p256_uint1 x480;
+  fiat_p256_addcarryx_u32(&x479, &x480, x478, x471, x447);
+  uint32_t x481;
+  fiat_p256_uint1 x482;
+  fiat_p256_addcarryx_u32(&x481, &x482, x480, x473, x449);
+  uint32_t x483;
+  fiat_p256_uint1 x484;
+  fiat_p256_addcarryx_u32(&x483, &x484, x482, 0x0, x451);
+  uint32_t x485;
+  fiat_p256_uint1 x486;
+  fiat_p256_addcarryx_u32(&x485, &x486, x484, 0x0, x453);
+  uint32_t x487;
+  fiat_p256_uint1 x488;
+  fiat_p256_addcarryx_u32(&x487, &x488, x486, x443, x455);
+  uint32_t x489;
+  fiat_p256_uint1 x490;
+  fiat_p256_addcarryx_u32(&x489, &x490, x488, x461, x457);
+  uint32_t x491;
+  fiat_p256_uint1 x492;
+  fiat_p256_addcarryx_u32(&x491, &x492, x490, x462, x459);
+  uint32_t x493;
+  fiat_p256_uint1 x494;
+  fiat_p256_addcarryx_u32(&x493, &x494, x492, 0x0, x460);
+  uint32_t x495;
+  uint32_t x496;
+  fiat_p256_mulx_u32(&x495, &x496, x6, (arg1[7]));
+  uint32_t x497;
+  uint32_t x498;
+  fiat_p256_mulx_u32(&x497, &x498, x6, (arg1[6]));
+  uint32_t x499;
+  uint32_t x500;
+  fiat_p256_mulx_u32(&x499, &x500, x6, (arg1[5]));
+  uint32_t x501;
+  uint32_t x502;
+  fiat_p256_mulx_u32(&x501, &x502, x6, (arg1[4]));
+  uint32_t x503;
+  uint32_t x504;
+  fiat_p256_mulx_u32(&x503, &x504, x6, (arg1[3]));
+  uint32_t x505;
+  uint32_t x506;
+  fiat_p256_mulx_u32(&x505, &x506, x6, (arg1[2]));
+  uint32_t x507;
+  uint32_t x508;
+  fiat_p256_mulx_u32(&x507, &x508, x6, (arg1[1]));
+  uint32_t x509;
+  uint32_t x510;
+  fiat_p256_mulx_u32(&x509, &x510, x6, (arg1[0]));
+  uint32_t x511;
+  fiat_p256_uint1 x512;
+  fiat_p256_addcarryx_u32(&x511, &x512, 0x0, x507, x510);
+  uint32_t x513;
+  fiat_p256_uint1 x514;
+  fiat_p256_addcarryx_u32(&x513, &x514, x512, x505, x508);
+  uint32_t x515;
+  fiat_p256_uint1 x516;
+  fiat_p256_addcarryx_u32(&x515, &x516, x514, x503, x506);
+  uint32_t x517;
+  fiat_p256_uint1 x518;
+  fiat_p256_addcarryx_u32(&x517, &x518, x516, x501, x504);
+  uint32_t x519;
+  fiat_p256_uint1 x520;
+  fiat_p256_addcarryx_u32(&x519, &x520, x518, x499, x502);
+  uint32_t x521;
+  fiat_p256_uint1 x522;
+  fiat_p256_addcarryx_u32(&x521, &x522, x520, x497, x500);
+  uint32_t x523;
+  fiat_p256_uint1 x524;
+  fiat_p256_addcarryx_u32(&x523, &x524, x522, x495, x498);
+  uint32_t x525;
+  fiat_p256_uint1 x526;
+  fiat_p256_addcarryx_u32(&x525, &x526, x524, 0x0, x496);
+  uint32_t x527;
+  fiat_p256_uint1 x528;
+  fiat_p256_addcarryx_u32(&x527, &x528, 0x0, x509, x477);
+  uint32_t x529;
+  fiat_p256_uint1 x530;
+  fiat_p256_addcarryx_u32(&x529, &x530, x528, x511, x479);
+  uint32_t x531;
+  fiat_p256_uint1 x532;
+  fiat_p256_addcarryx_u32(&x531, &x532, x530, x513, x481);
+  uint32_t x533;
+  fiat_p256_uint1 x534;
+  fiat_p256_addcarryx_u32(&x533, &x534, x532, x515, x483);
+  uint32_t x535;
+  fiat_p256_uint1 x536;
+  fiat_p256_addcarryx_u32(&x535, &x536, x534, x517, x485);
+  uint32_t x537;
+  fiat_p256_uint1 x538;
+  fiat_p256_addcarryx_u32(&x537, &x538, x536, x519, x487);
+  uint32_t x539;
+  fiat_p256_uint1 x540;
+  fiat_p256_addcarryx_u32(&x539, &x540, x538, x521, x489);
+  uint32_t x541;
+  fiat_p256_uint1 x542;
+  fiat_p256_addcarryx_u32(&x541, &x542, x540, x523, x491);
+  uint32_t x543;
+  fiat_p256_uint1 x544;
+  fiat_p256_addcarryx_u32(&x543, &x544, x542, x525, x493);
+  uint32_t x545;
+  uint32_t x546;
+  fiat_p256_mulx_u32(&x545, &x546, x527, UINT32_C(0xffffffff));
+  uint32_t x547;
+  uint32_t x548;
+  fiat_p256_mulx_u32(&x547, &x548, x527, UINT32_C(0xffffffff));
+  uint32_t x549;
+  uint32_t x550;
+  fiat_p256_mulx_u32(&x549, &x550, x527, UINT32_C(0xffffffff));
+  uint32_t x551;
+  uint32_t x552;
+  fiat_p256_mulx_u32(&x551, &x552, x527, UINT32_C(0xffffffff));
+  uint32_t x553;
+  fiat_p256_uint1 x554;
+  fiat_p256_addcarryx_u32(&x553, &x554, 0x0, x549, x552);
+  uint32_t x555;
+  fiat_p256_uint1 x556;
+  fiat_p256_addcarryx_u32(&x555, &x556, x554, x547, x550);
+  uint32_t x557;
+  fiat_p256_uint1 x558;
+  fiat_p256_addcarryx_u32(&x557, &x558, x556, 0x0, x548);
+  uint32_t x559;
+  fiat_p256_uint1 x560;
+  fiat_p256_addcarryx_u32(&x559, &x560, 0x0, x551, x527);
+  uint32_t x561;
+  fiat_p256_uint1 x562;
+  fiat_p256_addcarryx_u32(&x561, &x562, x560, x553, x529);
+  uint32_t x563;
+  fiat_p256_uint1 x564;
+  fiat_p256_addcarryx_u32(&x563, &x564, x562, x555, x531);
+  uint32_t x565;
+  fiat_p256_uint1 x566;
+  fiat_p256_addcarryx_u32(&x565, &x566, x564, x557, x533);
+  uint32_t x567;
+  fiat_p256_uint1 x568;
+  fiat_p256_addcarryx_u32(&x567, &x568, x566, 0x0, x535);
+  uint32_t x569;
+  fiat_p256_uint1 x570;
+  fiat_p256_addcarryx_u32(&x569, &x570, x568, 0x0, x537);
+  uint32_t x571;
+  fiat_p256_uint1 x572;
+  fiat_p256_addcarryx_u32(&x571, &x572, x570, x527, x539);
+  uint32_t x573;
+  fiat_p256_uint1 x574;
+  fiat_p256_addcarryx_u32(&x573, &x574, x572, x545, x541);
+  uint32_t x575;
+  fiat_p256_uint1 x576;
+  fiat_p256_addcarryx_u32(&x575, &x576, x574, x546, x543);
+  uint32_t x577;
+  fiat_p256_uint1 x578;
+  fiat_p256_addcarryx_u32(&x577, &x578, x576, 0x0, x544);
+  uint32_t x579;
+  uint32_t x580;
+  fiat_p256_mulx_u32(&x579, &x580, x7, (arg1[7]));
+  uint32_t x581;
+  uint32_t x582;
+  fiat_p256_mulx_u32(&x581, &x582, x7, (arg1[6]));
+  uint32_t x583;
+  uint32_t x584;
+  fiat_p256_mulx_u32(&x583, &x584, x7, (arg1[5]));
+  uint32_t x585;
+  uint32_t x586;
+  fiat_p256_mulx_u32(&x585, &x586, x7, (arg1[4]));
+  uint32_t x587;
+  uint32_t x588;
+  fiat_p256_mulx_u32(&x587, &x588, x7, (arg1[3]));
+  uint32_t x589;
+  uint32_t x590;
+  fiat_p256_mulx_u32(&x589, &x590, x7, (arg1[2]));
+  uint32_t x591;
+  uint32_t x592;
+  fiat_p256_mulx_u32(&x591, &x592, x7, (arg1[1]));
+  uint32_t x593;
+  uint32_t x594;
+  fiat_p256_mulx_u32(&x593, &x594, x7, (arg1[0]));
+  uint32_t x595;
+  fiat_p256_uint1 x596;
+  fiat_p256_addcarryx_u32(&x595, &x596, 0x0, x591, x594);
+  uint32_t x597;
+  fiat_p256_uint1 x598;
+  fiat_p256_addcarryx_u32(&x597, &x598, x596, x589, x592);
+  uint32_t x599;
+  fiat_p256_uint1 x600;
+  fiat_p256_addcarryx_u32(&x599, &x600, x598, x587, x590);
+  uint32_t x601;
+  fiat_p256_uint1 x602;
+  fiat_p256_addcarryx_u32(&x601, &x602, x600, x585, x588);
+  uint32_t x603;
+  fiat_p256_uint1 x604;
+  fiat_p256_addcarryx_u32(&x603, &x604, x602, x583, x586);
+  uint32_t x605;
+  fiat_p256_uint1 x606;
+  fiat_p256_addcarryx_u32(&x605, &x606, x604, x581, x584);
+  uint32_t x607;
+  fiat_p256_uint1 x608;
+  fiat_p256_addcarryx_u32(&x607, &x608, x606, x579, x582);
+  uint32_t x609;
+  fiat_p256_uint1 x610;
+  fiat_p256_addcarryx_u32(&x609, &x610, x608, 0x0, x580);
+  uint32_t x611;
+  fiat_p256_uint1 x612;
+  fiat_p256_addcarryx_u32(&x611, &x612, 0x0, x593, x561);
+  uint32_t x613;
+  fiat_p256_uint1 x614;
+  fiat_p256_addcarryx_u32(&x613, &x614, x612, x595, x563);
+  uint32_t x615;
+  fiat_p256_uint1 x616;
+  fiat_p256_addcarryx_u32(&x615, &x616, x614, x597, x565);
+  uint32_t x617;
+  fiat_p256_uint1 x618;
+  fiat_p256_addcarryx_u32(&x617, &x618, x616, x599, x567);
+  uint32_t x619;
+  fiat_p256_uint1 x620;
+  fiat_p256_addcarryx_u32(&x619, &x620, x618, x601, x569);
+  uint32_t x621;
+  fiat_p256_uint1 x622;
+  fiat_p256_addcarryx_u32(&x621, &x622, x620, x603, x571);
+  uint32_t x623;
+  fiat_p256_uint1 x624;
+  fiat_p256_addcarryx_u32(&x623, &x624, x622, x605, x573);
+  uint32_t x625;
+  fiat_p256_uint1 x626;
+  fiat_p256_addcarryx_u32(&x625, &x626, x624, x607, x575);
+  uint32_t x627;
+  fiat_p256_uint1 x628;
+  fiat_p256_addcarryx_u32(&x627, &x628, x626, x609, x577);
+  uint32_t x629;
+  uint32_t x630;
+  fiat_p256_mulx_u32(&x629, &x630, x611, UINT32_C(0xffffffff));
+  uint32_t x631;
+  uint32_t x632;
+  fiat_p256_mulx_u32(&x631, &x632, x611, UINT32_C(0xffffffff));
+  uint32_t x633;
+  uint32_t x634;
+  fiat_p256_mulx_u32(&x633, &x634, x611, UINT32_C(0xffffffff));
+  uint32_t x635;
+  uint32_t x636;
+  fiat_p256_mulx_u32(&x635, &x636, x611, UINT32_C(0xffffffff));
+  uint32_t x637;
+  fiat_p256_uint1 x638;
+  fiat_p256_addcarryx_u32(&x637, &x638, 0x0, x633, x636);
+  uint32_t x639;
+  fiat_p256_uint1 x640;
+  fiat_p256_addcarryx_u32(&x639, &x640, x638, x631, x634);
+  uint32_t x641;
+  fiat_p256_uint1 x642;
+  fiat_p256_addcarryx_u32(&x641, &x642, x640, 0x0, x632);
+  uint32_t x643;
+  fiat_p256_uint1 x644;
+  fiat_p256_addcarryx_u32(&x643, &x644, 0x0, x635, x611);
+  uint32_t x645;
+  fiat_p256_uint1 x646;
+  fiat_p256_addcarryx_u32(&x645, &x646, x644, x637, x613);
+  uint32_t x647;
+  fiat_p256_uint1 x648;
+  fiat_p256_addcarryx_u32(&x647, &x648, x646, x639, x615);
+  uint32_t x649;
+  fiat_p256_uint1 x650;
+  fiat_p256_addcarryx_u32(&x649, &x650, x648, x641, x617);
+  uint32_t x651;
+  fiat_p256_uint1 x652;
+  fiat_p256_addcarryx_u32(&x651, &x652, x650, 0x0, x619);
+  uint32_t x653;
+  fiat_p256_uint1 x654;
+  fiat_p256_addcarryx_u32(&x653, &x654, x652, 0x0, x621);
+  uint32_t x655;
+  fiat_p256_uint1 x656;
+  fiat_p256_addcarryx_u32(&x655, &x656, x654, x611, x623);
+  uint32_t x657;
+  fiat_p256_uint1 x658;
+  fiat_p256_addcarryx_u32(&x657, &x658, x656, x629, x625);
+  uint32_t x659;
+  fiat_p256_uint1 x660;
+  fiat_p256_addcarryx_u32(&x659, &x660, x658, x630, x627);
+  uint32_t x661;
+  fiat_p256_uint1 x662;
+  fiat_p256_addcarryx_u32(&x661, &x662, x660, 0x0, x628);
+  uint32_t x663;
+  fiat_p256_uint1 x664;
+  fiat_p256_subborrowx_u32(&x663, &x664, 0x0, x645, UINT32_C(0xffffffff));
+  uint32_t x665;
+  fiat_p256_uint1 x666;
+  fiat_p256_subborrowx_u32(&x665, &x666, x664, x647, UINT32_C(0xffffffff));
+  uint32_t x667;
+  fiat_p256_uint1 x668;
+  fiat_p256_subborrowx_u32(&x667, &x668, x666, x649, UINT32_C(0xffffffff));
+  uint32_t x669;
+  fiat_p256_uint1 x670;
+  fiat_p256_subborrowx_u32(&x669, &x670, x668, x651, 0x0);
+  uint32_t x671;
+  fiat_p256_uint1 x672;
+  fiat_p256_subborrowx_u32(&x671, &x672, x670, x653, 0x0);
+  uint32_t x673;
+  fiat_p256_uint1 x674;
+  fiat_p256_subborrowx_u32(&x673, &x674, x672, x655, 0x0);
+  uint32_t x675;
+  fiat_p256_uint1 x676;
+  fiat_p256_subborrowx_u32(&x675, &x676, x674, x657, 0x1);
+  uint32_t x677;
+  fiat_p256_uint1 x678;
+  fiat_p256_subborrowx_u32(&x677, &x678, x676, x659, UINT32_C(0xffffffff));
+  uint32_t x679;
+  fiat_p256_uint1 x680;
+  fiat_p256_subborrowx_u32(&x679, &x680, x678, x661, 0x0);
+  uint32_t x681;
+  fiat_p256_cmovznz_u32(&x681, x680, x663, x645);
+  uint32_t x682;
+  fiat_p256_cmovznz_u32(&x682, x680, x665, x647);
+  uint32_t x683;
+  fiat_p256_cmovznz_u32(&x683, x680, x667, x649);
+  uint32_t x684;
+  fiat_p256_cmovznz_u32(&x684, x680, x669, x651);
+  uint32_t x685;
+  fiat_p256_cmovznz_u32(&x685, x680, x671, x653);
+  uint32_t x686;
+  fiat_p256_cmovznz_u32(&x686, x680, x673, x655);
+  uint32_t x687;
+  fiat_p256_cmovznz_u32(&x687, x680, x675, x657);
+  uint32_t x688;
+  fiat_p256_cmovznz_u32(&x688, x680, x677, x659);
+  out1[0] = x681;
+  out1[1] = x682;
+  out1[2] = x683;
+  out1[3] = x684;
+  out1[4] = x685;
+  out1[5] = x686;
+  out1[6] = x687;
+  out1[7] = x688;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_add(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_addcarryx_u32(&x1, &x2, 0x0, (arg2[0]), (arg1[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_addcarryx_u32(&x3, &x4, x2, (arg2[1]), (arg1[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_addcarryx_u32(&x5, &x6, x4, (arg2[2]), (arg1[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_addcarryx_u32(&x7, &x8, x6, (arg2[3]), (arg1[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_addcarryx_u32(&x9, &x10, x8, (arg2[4]), (arg1[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_addcarryx_u32(&x11, &x12, x10, (arg2[5]), (arg1[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u32(&x13, &x14, x12, (arg2[6]), (arg1[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u32(&x15, &x16, x14, (arg2[7]), (arg1[7]));
+  uint32_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_subborrowx_u32(&x17, &x18, 0x0, x1, UINT32_C(0xffffffff));
+  uint32_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_subborrowx_u32(&x19, &x20, x18, x3, UINT32_C(0xffffffff));
+  uint32_t x21;
+  fiat_p256_uint1 x22;
+  fiat_p256_subborrowx_u32(&x21, &x22, x20, x5, UINT32_C(0xffffffff));
+  uint32_t x23;
+  fiat_p256_uint1 x24;
+  fiat_p256_subborrowx_u32(&x23, &x24, x22, x7, 0x0);
+  uint32_t x25;
+  fiat_p256_uint1 x26;
+  fiat_p256_subborrowx_u32(&x25, &x26, x24, x9, 0x0);
+  uint32_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_subborrowx_u32(&x27, &x28, x26, x11, 0x0);
+  uint32_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_subborrowx_u32(&x29, &x30, x28, x13, 0x1);
+  uint32_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_subborrowx_u32(&x31, &x32, x30, x15, UINT32_C(0xffffffff));
+  uint32_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_subborrowx_u32(&x33, &x34, x32, x16, 0x0);
+  uint32_t x35;
+  fiat_p256_cmovznz_u32(&x35, x34, x17, x1);
+  uint32_t x36;
+  fiat_p256_cmovznz_u32(&x36, x34, x19, x3);
+  uint32_t x37;
+  fiat_p256_cmovznz_u32(&x37, x34, x21, x5);
+  uint32_t x38;
+  fiat_p256_cmovznz_u32(&x38, x34, x23, x7);
+  uint32_t x39;
+  fiat_p256_cmovznz_u32(&x39, x34, x25, x9);
+  uint32_t x40;
+  fiat_p256_cmovznz_u32(&x40, x34, x27, x11);
+  uint32_t x41;
+  fiat_p256_cmovznz_u32(&x41, x34, x29, x13);
+  uint32_t x42;
+  fiat_p256_cmovznz_u32(&x42, x34, x31, x15);
+  out1[0] = x35;
+  out1[1] = x36;
+  out1[2] = x37;
+  out1[3] = x38;
+  out1[4] = x39;
+  out1[5] = x40;
+  out1[6] = x41;
+  out1[7] = x42;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_sub(uint32_t out1[8], const uint32_t arg1[8], const uint32_t arg2[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u32(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u32(&x3, &x4, x2, (arg1[1]), (arg2[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u32(&x5, &x6, x4, (arg1[2]), (arg2[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u32(&x7, &x8, x6, (arg1[3]), (arg2[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u32(&x9, &x10, x8, (arg1[4]), (arg2[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u32(&x11, &x12, x10, (arg1[5]), (arg2[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u32(&x13, &x14, x12, (arg1[6]), (arg2[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u32(&x15, &x16, x14, (arg1[7]), (arg2[7]));
+  uint32_t x17;
+  fiat_p256_cmovznz_u32(&x17, x16, 0x0, UINT32_C(0xffffffff));
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, 0x0, (x17 & UINT32_C(0xffffffff)), x1);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x19, (x17 & UINT32_C(0xffffffff)), x3);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x21, (x17 & UINT32_C(0xffffffff)), x5);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, x23, 0x0, x7);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x9);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x11);
+  uint32_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u32(&x30, &x31, x29, (fiat_p256_uint1)(x17 & 0x1), x13);
+  uint32_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u32(&x32, &x33, x31, (x17 & UINT32_C(0xffffffff)), x15);
+  out1[0] = x18;
+  out1[1] = x20;
+  out1[2] = x22;
+  out1[3] = x24;
+  out1[4] = x26;
+  out1[5] = x28;
+  out1[6] = x30;
+  out1[7] = x32;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_opp(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u32(&x1, &x2, 0x0, 0x0, (arg1[0]));
+  uint32_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u32(&x3, &x4, x2, 0x0, (arg1[1]));
+  uint32_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u32(&x5, &x6, x4, 0x0, (arg1[2]));
+  uint32_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u32(&x7, &x8, x6, 0x0, (arg1[3]));
+  uint32_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u32(&x9, &x10, x8, 0x0, (arg1[4]));
+  uint32_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u32(&x11, &x12, x10, 0x0, (arg1[5]));
+  uint32_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u32(&x13, &x14, x12, 0x0, (arg1[6]));
+  uint32_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u32(&x15, &x16, x14, 0x0, (arg1[7]));
+  uint32_t x17;
+  fiat_p256_cmovznz_u32(&x17, x16, 0x0, UINT32_C(0xffffffff));
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, 0x0, (x17 & UINT32_C(0xffffffff)), x1);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x19, (x17 & UINT32_C(0xffffffff)), x3);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x21, (x17 & UINT32_C(0xffffffff)), x5);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, x23, 0x0, x7);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x9);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x11);
+  uint32_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u32(&x30, &x31, x29, (fiat_p256_uint1)(x17 & 0x1), x13);
+  uint32_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u32(&x32, &x33, x31, (x17 & UINT32_C(0xffffffff)), x15);
+  out1[0] = x18;
+  out1[1] = x20;
+  out1[2] = x22;
+  out1[3] = x24;
+  out1[4] = x26;
+  out1[5] = x28;
+  out1[6] = x30;
+  out1[7] = x32;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_from_montgomery(uint32_t out1[8], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[0]);
+  uint32_t x2;
+  uint32_t x3;
+  fiat_p256_mulx_u32(&x2, &x3, x1, UINT32_C(0xffffffff));
+  uint32_t x4;
+  uint32_t x5;
+  fiat_p256_mulx_u32(&x4, &x5, x1, UINT32_C(0xffffffff));
+  uint32_t x6;
+  uint32_t x7;
+  fiat_p256_mulx_u32(&x6, &x7, x1, UINT32_C(0xffffffff));
+  uint32_t x8;
+  uint32_t x9;
+  fiat_p256_mulx_u32(&x8, &x9, x1, UINT32_C(0xffffffff));
+  uint32_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u32(&x10, &x11, 0x0, x6, x9);
+  uint32_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u32(&x12, &x13, x11, x4, x7);
+  uint32_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u32(&x14, &x15, 0x0, x8, x1);
+  uint32_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u32(&x16, &x17, x15, x10, 0x0);
+  uint32_t x18;
+  fiat_p256_uint1 x19;
+  fiat_p256_addcarryx_u32(&x18, &x19, x17, x12, 0x0);
+  uint32_t x20;
+  fiat_p256_uint1 x21;
+  fiat_p256_addcarryx_u32(&x20, &x21, x13, 0x0, x5);
+  uint32_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u32(&x22, &x23, x19, x20, 0x0);
+  uint32_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u32(&x24, &x25, 0x0, (arg1[1]), x16);
+  uint32_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u32(&x26, &x27, x25, 0x0, x18);
+  uint32_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u32(&x28, &x29, x27, 0x0, x22);
+  uint32_t x30;
+  uint32_t x31;
+  fiat_p256_mulx_u32(&x30, &x31, x24, UINT32_C(0xffffffff));
+  uint32_t x32;
+  uint32_t x33;
+  fiat_p256_mulx_u32(&x32, &x33, x24, UINT32_C(0xffffffff));
+  uint32_t x34;
+  uint32_t x35;
+  fiat_p256_mulx_u32(&x34, &x35, x24, UINT32_C(0xffffffff));
+  uint32_t x36;
+  uint32_t x37;
+  fiat_p256_mulx_u32(&x36, &x37, x24, UINT32_C(0xffffffff));
+  uint32_t x38;
+  fiat_p256_uint1 x39;
+  fiat_p256_addcarryx_u32(&x38, &x39, 0x0, x34, x37);
+  uint32_t x40;
+  fiat_p256_uint1 x41;
+  fiat_p256_addcarryx_u32(&x40, &x41, x39, x32, x35);
+  uint32_t x42;
+  fiat_p256_uint1 x43;
+  fiat_p256_addcarryx_u32(&x42, &x43, 0x0, x36, x24);
+  uint32_t x44;
+  fiat_p256_uint1 x45;
+  fiat_p256_addcarryx_u32(&x44, &x45, x43, x38, x26);
+  uint32_t x46;
+  fiat_p256_uint1 x47;
+  fiat_p256_addcarryx_u32(&x46, &x47, x45, x40, x28);
+  uint32_t x48;
+  fiat_p256_uint1 x49;
+  fiat_p256_addcarryx_u32(&x48, &x49, x23, 0x0, 0x0);
+  uint32_t x50;
+  fiat_p256_uint1 x51;
+  fiat_p256_addcarryx_u32(&x50, &x51, x29, 0x0, (fiat_p256_uint1)x48);
+  uint32_t x52;
+  fiat_p256_uint1 x53;
+  fiat_p256_addcarryx_u32(&x52, &x53, x41, 0x0, x33);
+  uint32_t x54;
+  fiat_p256_uint1 x55;
+  fiat_p256_addcarryx_u32(&x54, &x55, x47, x52, x50);
+  uint32_t x56;
+  fiat_p256_uint1 x57;
+  fiat_p256_addcarryx_u32(&x56, &x57, 0x0, x24, x2);
+  uint32_t x58;
+  fiat_p256_uint1 x59;
+  fiat_p256_addcarryx_u32(&x58, &x59, x57, x30, x3);
+  uint32_t x60;
+  fiat_p256_uint1 x61;
+  fiat_p256_addcarryx_u32(&x60, &x61, 0x0, (arg1[2]), x44);
+  uint32_t x62;
+  fiat_p256_uint1 x63;
+  fiat_p256_addcarryx_u32(&x62, &x63, x61, 0x0, x46);
+  uint32_t x64;
+  fiat_p256_uint1 x65;
+  fiat_p256_addcarryx_u32(&x64, &x65, x63, 0x0, x54);
+  uint32_t x66;
+  uint32_t x67;
+  fiat_p256_mulx_u32(&x66, &x67, x60, UINT32_C(0xffffffff));
+  uint32_t x68;
+  uint32_t x69;
+  fiat_p256_mulx_u32(&x68, &x69, x60, UINT32_C(0xffffffff));
+  uint32_t x70;
+  uint32_t x71;
+  fiat_p256_mulx_u32(&x70, &x71, x60, UINT32_C(0xffffffff));
+  uint32_t x72;
+  uint32_t x73;
+  fiat_p256_mulx_u32(&x72, &x73, x60, UINT32_C(0xffffffff));
+  uint32_t x74;
+  fiat_p256_uint1 x75;
+  fiat_p256_addcarryx_u32(&x74, &x75, 0x0, x70, x73);
+  uint32_t x76;
+  fiat_p256_uint1 x77;
+  fiat_p256_addcarryx_u32(&x76, &x77, x75, x68, x71);
+  uint32_t x78;
+  fiat_p256_uint1 x79;
+  fiat_p256_addcarryx_u32(&x78, &x79, 0x0, x72, x60);
+  uint32_t x80;
+  fiat_p256_uint1 x81;
+  fiat_p256_addcarryx_u32(&x80, &x81, x79, x74, x62);
+  uint32_t x82;
+  fiat_p256_uint1 x83;
+  fiat_p256_addcarryx_u32(&x82, &x83, x81, x76, x64);
+  uint32_t x84;
+  fiat_p256_uint1 x85;
+  fiat_p256_addcarryx_u32(&x84, &x85, x55, 0x0, 0x0);
+  uint32_t x86;
+  fiat_p256_uint1 x87;
+  fiat_p256_addcarryx_u32(&x86, &x87, x65, 0x0, (fiat_p256_uint1)x84);
+  uint32_t x88;
+  fiat_p256_uint1 x89;
+  fiat_p256_addcarryx_u32(&x88, &x89, x77, 0x0, x69);
+  uint32_t x90;
+  fiat_p256_uint1 x91;
+  fiat_p256_addcarryx_u32(&x90, &x91, x83, x88, x86);
+  uint32_t x92;
+  fiat_p256_uint1 x93;
+  fiat_p256_addcarryx_u32(&x92, &x93, x91, 0x0, x1);
+  uint32_t x94;
+  fiat_p256_uint1 x95;
+  fiat_p256_addcarryx_u32(&x94, &x95, x93, 0x0, x56);
+  uint32_t x96;
+  fiat_p256_uint1 x97;
+  fiat_p256_addcarryx_u32(&x96, &x97, x95, x60, x58);
+  uint32_t x98;
+  fiat_p256_uint1 x99;
+  fiat_p256_addcarryx_u32(&x98, &x99, x59, x31, 0x0);
+  uint32_t x100;
+  fiat_p256_uint1 x101;
+  fiat_p256_addcarryx_u32(&x100, &x101, x97, x66, x98);
+  uint32_t x102;
+  fiat_p256_uint1 x103;
+  fiat_p256_addcarryx_u32(&x102, &x103, 0x0, (arg1[3]), x80);
+  uint32_t x104;
+  fiat_p256_uint1 x105;
+  fiat_p256_addcarryx_u32(&x104, &x105, x103, 0x0, x82);
+  uint32_t x106;
+  fiat_p256_uint1 x107;
+  fiat_p256_addcarryx_u32(&x106, &x107, x105, 0x0, x90);
+  uint32_t x108;
+  fiat_p256_uint1 x109;
+  fiat_p256_addcarryx_u32(&x108, &x109, x107, 0x0, x92);
+  uint32_t x110;
+  fiat_p256_uint1 x111;
+  fiat_p256_addcarryx_u32(&x110, &x111, x109, 0x0, x94);
+  uint32_t x112;
+  fiat_p256_uint1 x113;
+  fiat_p256_addcarryx_u32(&x112, &x113, x111, 0x0, x96);
+  uint32_t x114;
+  fiat_p256_uint1 x115;
+  fiat_p256_addcarryx_u32(&x114, &x115, x113, 0x0, x100);
+  uint32_t x116;
+  fiat_p256_uint1 x117;
+  fiat_p256_addcarryx_u32(&x116, &x117, x101, x67, 0x0);
+  uint32_t x118;
+  fiat_p256_uint1 x119;
+  fiat_p256_addcarryx_u32(&x118, &x119, x115, 0x0, x116);
+  uint32_t x120;
+  uint32_t x121;
+  fiat_p256_mulx_u32(&x120, &x121, x102, UINT32_C(0xffffffff));
+  uint32_t x122;
+  uint32_t x123;
+  fiat_p256_mulx_u32(&x122, &x123, x102, UINT32_C(0xffffffff));
+  uint32_t x124;
+  uint32_t x125;
+  fiat_p256_mulx_u32(&x124, &x125, x102, UINT32_C(0xffffffff));
+  uint32_t x126;
+  uint32_t x127;
+  fiat_p256_mulx_u32(&x126, &x127, x102, UINT32_C(0xffffffff));
+  uint32_t x128;
+  fiat_p256_uint1 x129;
+  fiat_p256_addcarryx_u32(&x128, &x129, 0x0, x124, x127);
+  uint32_t x130;
+  fiat_p256_uint1 x131;
+  fiat_p256_addcarryx_u32(&x130, &x131, x129, x122, x125);
+  uint32_t x132;
+  fiat_p256_uint1 x133;
+  fiat_p256_addcarryx_u32(&x132, &x133, 0x0, x126, x102);
+  uint32_t x134;
+  fiat_p256_uint1 x135;
+  fiat_p256_addcarryx_u32(&x134, &x135, x133, x128, x104);
+  uint32_t x136;
+  fiat_p256_uint1 x137;
+  fiat_p256_addcarryx_u32(&x136, &x137, x135, x130, x106);
+  uint32_t x138;
+  fiat_p256_uint1 x139;
+  fiat_p256_addcarryx_u32(&x138, &x139, x131, 0x0, x123);
+  uint32_t x140;
+  fiat_p256_uint1 x141;
+  fiat_p256_addcarryx_u32(&x140, &x141, x137, x138, x108);
+  uint32_t x142;
+  fiat_p256_uint1 x143;
+  fiat_p256_addcarryx_u32(&x142, &x143, x141, 0x0, x110);
+  uint32_t x144;
+  fiat_p256_uint1 x145;
+  fiat_p256_addcarryx_u32(&x144, &x145, x143, 0x0, x112);
+  uint32_t x146;
+  fiat_p256_uint1 x147;
+  fiat_p256_addcarryx_u32(&x146, &x147, x145, x102, x114);
+  uint32_t x148;
+  fiat_p256_uint1 x149;
+  fiat_p256_addcarryx_u32(&x148, &x149, x147, x120, x118);
+  uint32_t x150;
+  fiat_p256_uint1 x151;
+  fiat_p256_addcarryx_u32(&x150, &x151, x119, 0x0, 0x0);
+  uint32_t x152;
+  fiat_p256_uint1 x153;
+  fiat_p256_addcarryx_u32(&x152, &x153, x149, x121, (fiat_p256_uint1)x150);
+  uint32_t x154;
+  fiat_p256_uint1 x155;
+  fiat_p256_addcarryx_u32(&x154, &x155, 0x0, (arg1[4]), x134);
+  uint32_t x156;
+  fiat_p256_uint1 x157;
+  fiat_p256_addcarryx_u32(&x156, &x157, x155, 0x0, x136);
+  uint32_t x158;
+  fiat_p256_uint1 x159;
+  fiat_p256_addcarryx_u32(&x158, &x159, x157, 0x0, x140);
+  uint32_t x160;
+  fiat_p256_uint1 x161;
+  fiat_p256_addcarryx_u32(&x160, &x161, x159, 0x0, x142);
+  uint32_t x162;
+  fiat_p256_uint1 x163;
+  fiat_p256_addcarryx_u32(&x162, &x163, x161, 0x0, x144);
+  uint32_t x164;
+  fiat_p256_uint1 x165;
+  fiat_p256_addcarryx_u32(&x164, &x165, x163, 0x0, x146);
+  uint32_t x166;
+  fiat_p256_uint1 x167;
+  fiat_p256_addcarryx_u32(&x166, &x167, x165, 0x0, x148);
+  uint32_t x168;
+  fiat_p256_uint1 x169;
+  fiat_p256_addcarryx_u32(&x168, &x169, x167, 0x0, x152);
+  uint32_t x170;
+  uint32_t x171;
+  fiat_p256_mulx_u32(&x170, &x171, x154, UINT32_C(0xffffffff));
+  uint32_t x172;
+  uint32_t x173;
+  fiat_p256_mulx_u32(&x172, &x173, x154, UINT32_C(0xffffffff));
+  uint32_t x174;
+  uint32_t x175;
+  fiat_p256_mulx_u32(&x174, &x175, x154, UINT32_C(0xffffffff));
+  uint32_t x176;
+  uint32_t x177;
+  fiat_p256_mulx_u32(&x176, &x177, x154, UINT32_C(0xffffffff));
+  uint32_t x178;
+  fiat_p256_uint1 x179;
+  fiat_p256_addcarryx_u32(&x178, &x179, 0x0, x174, x177);
+  uint32_t x180;
+  fiat_p256_uint1 x181;
+  fiat_p256_addcarryx_u32(&x180, &x181, x179, x172, x175);
+  uint32_t x182;
+  fiat_p256_uint1 x183;
+  fiat_p256_addcarryx_u32(&x182, &x183, 0x0, x176, x154);
+  uint32_t x184;
+  fiat_p256_uint1 x185;
+  fiat_p256_addcarryx_u32(&x184, &x185, x183, x178, x156);
+  uint32_t x186;
+  fiat_p256_uint1 x187;
+  fiat_p256_addcarryx_u32(&x186, &x187, x185, x180, x158);
+  uint32_t x188;
+  fiat_p256_uint1 x189;
+  fiat_p256_addcarryx_u32(&x188, &x189, x181, 0x0, x173);
+  uint32_t x190;
+  fiat_p256_uint1 x191;
+  fiat_p256_addcarryx_u32(&x190, &x191, x187, x188, x160);
+  uint32_t x192;
+  fiat_p256_uint1 x193;
+  fiat_p256_addcarryx_u32(&x192, &x193, x191, 0x0, x162);
+  uint32_t x194;
+  fiat_p256_uint1 x195;
+  fiat_p256_addcarryx_u32(&x194, &x195, x193, 0x0, x164);
+  uint32_t x196;
+  fiat_p256_uint1 x197;
+  fiat_p256_addcarryx_u32(&x196, &x197, x195, x154, x166);
+  uint32_t x198;
+  fiat_p256_uint1 x199;
+  fiat_p256_addcarryx_u32(&x198, &x199, x197, x170, x168);
+  uint32_t x200;
+  fiat_p256_uint1 x201;
+  fiat_p256_addcarryx_u32(&x200, &x201, x153, 0x0, 0x0);
+  uint32_t x202;
+  fiat_p256_uint1 x203;
+  fiat_p256_addcarryx_u32(&x202, &x203, x169, 0x0, (fiat_p256_uint1)x200);
+  uint32_t x204;
+  fiat_p256_uint1 x205;
+  fiat_p256_addcarryx_u32(&x204, &x205, x199, x171, x202);
+  uint32_t x206;
+  fiat_p256_uint1 x207;
+  fiat_p256_addcarryx_u32(&x206, &x207, 0x0, (arg1[5]), x184);
+  uint32_t x208;
+  fiat_p256_uint1 x209;
+  fiat_p256_addcarryx_u32(&x208, &x209, x207, 0x0, x186);
+  uint32_t x210;
+  fiat_p256_uint1 x211;
+  fiat_p256_addcarryx_u32(&x210, &x211, x209, 0x0, x190);
+  uint32_t x212;
+  fiat_p256_uint1 x213;
+  fiat_p256_addcarryx_u32(&x212, &x213, x211, 0x0, x192);
+  uint32_t x214;
+  fiat_p256_uint1 x215;
+  fiat_p256_addcarryx_u32(&x214, &x215, x213, 0x0, x194);
+  uint32_t x216;
+  fiat_p256_uint1 x217;
+  fiat_p256_addcarryx_u32(&x216, &x217, x215, 0x0, x196);
+  uint32_t x218;
+  fiat_p256_uint1 x219;
+  fiat_p256_addcarryx_u32(&x218, &x219, x217, 0x0, x198);
+  uint32_t x220;
+  fiat_p256_uint1 x221;
+  fiat_p256_addcarryx_u32(&x220, &x221, x219, 0x0, x204);
+  uint32_t x222;
+  uint32_t x223;
+  fiat_p256_mulx_u32(&x222, &x223, x206, UINT32_C(0xffffffff));
+  uint32_t x224;
+  uint32_t x225;
+  fiat_p256_mulx_u32(&x224, &x225, x206, UINT32_C(0xffffffff));
+  uint32_t x226;
+  uint32_t x227;
+  fiat_p256_mulx_u32(&x226, &x227, x206, UINT32_C(0xffffffff));
+  uint32_t x228;
+  uint32_t x229;
+  fiat_p256_mulx_u32(&x228, &x229, x206, UINT32_C(0xffffffff));
+  uint32_t x230;
+  fiat_p256_uint1 x231;
+  fiat_p256_addcarryx_u32(&x230, &x231, 0x0, x226, x229);
+  uint32_t x232;
+  fiat_p256_uint1 x233;
+  fiat_p256_addcarryx_u32(&x232, &x233, x231, x224, x227);
+  uint32_t x234;
+  fiat_p256_uint1 x235;
+  fiat_p256_addcarryx_u32(&x234, &x235, 0x0, x228, x206);
+  uint32_t x236;
+  fiat_p256_uint1 x237;
+  fiat_p256_addcarryx_u32(&x236, &x237, x235, x230, x208);
+  uint32_t x238;
+  fiat_p256_uint1 x239;
+  fiat_p256_addcarryx_u32(&x238, &x239, x237, x232, x210);
+  uint32_t x240;
+  fiat_p256_uint1 x241;
+  fiat_p256_addcarryx_u32(&x240, &x241, x233, 0x0, x225);
+  uint32_t x242;
+  fiat_p256_uint1 x243;
+  fiat_p256_addcarryx_u32(&x242, &x243, x239, x240, x212);
+  uint32_t x244;
+  fiat_p256_uint1 x245;
+  fiat_p256_addcarryx_u32(&x244, &x245, x243, 0x0, x214);
+  uint32_t x246;
+  fiat_p256_uint1 x247;
+  fiat_p256_addcarryx_u32(&x246, &x247, x245, 0x0, x216);
+  uint32_t x248;
+  fiat_p256_uint1 x249;
+  fiat_p256_addcarryx_u32(&x248, &x249, x247, x206, x218);
+  uint32_t x250;
+  fiat_p256_uint1 x251;
+  fiat_p256_addcarryx_u32(&x250, &x251, x249, x222, x220);
+  uint32_t x252;
+  fiat_p256_uint1 x253;
+  fiat_p256_addcarryx_u32(&x252, &x253, x205, 0x0, 0x0);
+  uint32_t x254;
+  fiat_p256_uint1 x255;
+  fiat_p256_addcarryx_u32(&x254, &x255, x221, 0x0, (fiat_p256_uint1)x252);
+  uint32_t x256;
+  fiat_p256_uint1 x257;
+  fiat_p256_addcarryx_u32(&x256, &x257, x251, x223, x254);
+  uint32_t x258;
+  fiat_p256_uint1 x259;
+  fiat_p256_addcarryx_u32(&x258, &x259, 0x0, (arg1[6]), x236);
+  uint32_t x260;
+  fiat_p256_uint1 x261;
+  fiat_p256_addcarryx_u32(&x260, &x261, x259, 0x0, x238);
+  uint32_t x262;
+  fiat_p256_uint1 x263;
+  fiat_p256_addcarryx_u32(&x262, &x263, x261, 0x0, x242);
+  uint32_t x264;
+  fiat_p256_uint1 x265;
+  fiat_p256_addcarryx_u32(&x264, &x265, x263, 0x0, x244);
+  uint32_t x266;
+  fiat_p256_uint1 x267;
+  fiat_p256_addcarryx_u32(&x266, &x267, x265, 0x0, x246);
+  uint32_t x268;
+  fiat_p256_uint1 x269;
+  fiat_p256_addcarryx_u32(&x268, &x269, x267, 0x0, x248);
+  uint32_t x270;
+  fiat_p256_uint1 x271;
+  fiat_p256_addcarryx_u32(&x270, &x271, x269, 0x0, x250);
+  uint32_t x272;
+  fiat_p256_uint1 x273;
+  fiat_p256_addcarryx_u32(&x272, &x273, x271, 0x0, x256);
+  uint32_t x274;
+  uint32_t x275;
+  fiat_p256_mulx_u32(&x274, &x275, x258, UINT32_C(0xffffffff));
+  uint32_t x276;
+  uint32_t x277;
+  fiat_p256_mulx_u32(&x276, &x277, x258, UINT32_C(0xffffffff));
+  uint32_t x278;
+  uint32_t x279;
+  fiat_p256_mulx_u32(&x278, &x279, x258, UINT32_C(0xffffffff));
+  uint32_t x280;
+  uint32_t x281;
+  fiat_p256_mulx_u32(&x280, &x281, x258, UINT32_C(0xffffffff));
+  uint32_t x282;
+  fiat_p256_uint1 x283;
+  fiat_p256_addcarryx_u32(&x282, &x283, 0x0, x278, x281);
+  uint32_t x284;
+  fiat_p256_uint1 x285;
+  fiat_p256_addcarryx_u32(&x284, &x285, x283, x276, x279);
+  uint32_t x286;
+  fiat_p256_uint1 x287;
+  fiat_p256_addcarryx_u32(&x286, &x287, 0x0, x280, x258);
+  uint32_t x288;
+  fiat_p256_uint1 x289;
+  fiat_p256_addcarryx_u32(&x288, &x289, x287, x282, x260);
+  uint32_t x290;
+  fiat_p256_uint1 x291;
+  fiat_p256_addcarryx_u32(&x290, &x291, x289, x284, x262);
+  uint32_t x292;
+  fiat_p256_uint1 x293;
+  fiat_p256_addcarryx_u32(&x292, &x293, x285, 0x0, x277);
+  uint32_t x294;
+  fiat_p256_uint1 x295;
+  fiat_p256_addcarryx_u32(&x294, &x295, x291, x292, x264);
+  uint32_t x296;
+  fiat_p256_uint1 x297;
+  fiat_p256_addcarryx_u32(&x296, &x297, x295, 0x0, x266);
+  uint32_t x298;
+  fiat_p256_uint1 x299;
+  fiat_p256_addcarryx_u32(&x298, &x299, x297, 0x0, x268);
+  uint32_t x300;
+  fiat_p256_uint1 x301;
+  fiat_p256_addcarryx_u32(&x300, &x301, x299, x258, x270);
+  uint32_t x302;
+  fiat_p256_uint1 x303;
+  fiat_p256_addcarryx_u32(&x302, &x303, x301, x274, x272);
+  uint32_t x304;
+  fiat_p256_uint1 x305;
+  fiat_p256_addcarryx_u32(&x304, &x305, x257, 0x0, 0x0);
+  uint32_t x306;
+  fiat_p256_uint1 x307;
+  fiat_p256_addcarryx_u32(&x306, &x307, x273, 0x0, (fiat_p256_uint1)x304);
+  uint32_t x308;
+  fiat_p256_uint1 x309;
+  fiat_p256_addcarryx_u32(&x308, &x309, x303, x275, x306);
+  uint32_t x310;
+  fiat_p256_uint1 x311;
+  fiat_p256_addcarryx_u32(&x310, &x311, 0x0, (arg1[7]), x288);
+  uint32_t x312;
+  fiat_p256_uint1 x313;
+  fiat_p256_addcarryx_u32(&x312, &x313, x311, 0x0, x290);
+  uint32_t x314;
+  fiat_p256_uint1 x315;
+  fiat_p256_addcarryx_u32(&x314, &x315, x313, 0x0, x294);
+  uint32_t x316;
+  fiat_p256_uint1 x317;
+  fiat_p256_addcarryx_u32(&x316, &x317, x315, 0x0, x296);
+  uint32_t x318;
+  fiat_p256_uint1 x319;
+  fiat_p256_addcarryx_u32(&x318, &x319, x317, 0x0, x298);
+  uint32_t x320;
+  fiat_p256_uint1 x321;
+  fiat_p256_addcarryx_u32(&x320, &x321, x319, 0x0, x300);
+  uint32_t x322;
+  fiat_p256_uint1 x323;
+  fiat_p256_addcarryx_u32(&x322, &x323, x321, 0x0, x302);
+  uint32_t x324;
+  fiat_p256_uint1 x325;
+  fiat_p256_addcarryx_u32(&x324, &x325, x323, 0x0, x308);
+  uint32_t x326;
+  uint32_t x327;
+  fiat_p256_mulx_u32(&x326, &x327, x310, UINT32_C(0xffffffff));
+  uint32_t x328;
+  uint32_t x329;
+  fiat_p256_mulx_u32(&x328, &x329, x310, UINT32_C(0xffffffff));
+  uint32_t x330;
+  uint32_t x331;
+  fiat_p256_mulx_u32(&x330, &x331, x310, UINT32_C(0xffffffff));
+  uint32_t x332;
+  uint32_t x333;
+  fiat_p256_mulx_u32(&x332, &x333, x310, UINT32_C(0xffffffff));
+  uint32_t x334;
+  fiat_p256_uint1 x335;
+  fiat_p256_addcarryx_u32(&x334, &x335, 0x0, x330, x333);
+  uint32_t x336;
+  fiat_p256_uint1 x337;
+  fiat_p256_addcarryx_u32(&x336, &x337, x335, x328, x331);
+  uint32_t x338;
+  fiat_p256_uint1 x339;
+  fiat_p256_addcarryx_u32(&x338, &x339, 0x0, x332, x310);
+  uint32_t x340;
+  fiat_p256_uint1 x341;
+  fiat_p256_addcarryx_u32(&x340, &x341, x339, x334, x312);
+  uint32_t x342;
+  fiat_p256_uint1 x343;
+  fiat_p256_addcarryx_u32(&x342, &x343, x341, x336, x314);
+  uint32_t x344;
+  fiat_p256_uint1 x345;
+  fiat_p256_addcarryx_u32(&x344, &x345, x337, 0x0, x329);
+  uint32_t x346;
+  fiat_p256_uint1 x347;
+  fiat_p256_addcarryx_u32(&x346, &x347, x343, x344, x316);
+  uint32_t x348;
+  fiat_p256_uint1 x349;
+  fiat_p256_addcarryx_u32(&x348, &x349, x347, 0x0, x318);
+  uint32_t x350;
+  fiat_p256_uint1 x351;
+  fiat_p256_addcarryx_u32(&x350, &x351, x349, 0x0, x320);
+  uint32_t x352;
+  fiat_p256_uint1 x353;
+  fiat_p256_addcarryx_u32(&x352, &x353, x351, x310, x322);
+  uint32_t x354;
+  fiat_p256_uint1 x355;
+  fiat_p256_addcarryx_u32(&x354, &x355, x353, x326, x324);
+  uint32_t x356;
+  fiat_p256_uint1 x357;
+  fiat_p256_addcarryx_u32(&x356, &x357, x309, 0x0, 0x0);
+  uint32_t x358;
+  fiat_p256_uint1 x359;
+  fiat_p256_addcarryx_u32(&x358, &x359, x325, 0x0, (fiat_p256_uint1)x356);
+  uint32_t x360;
+  fiat_p256_uint1 x361;
+  fiat_p256_addcarryx_u32(&x360, &x361, x355, x327, x358);
+  uint32_t x362;
+  fiat_p256_uint1 x363;
+  fiat_p256_subborrowx_u32(&x362, &x363, 0x0, x340, UINT32_C(0xffffffff));
+  uint32_t x364;
+  fiat_p256_uint1 x365;
+  fiat_p256_subborrowx_u32(&x364, &x365, x363, x342, UINT32_C(0xffffffff));
+  uint32_t x366;
+  fiat_p256_uint1 x367;
+  fiat_p256_subborrowx_u32(&x366, &x367, x365, x346, UINT32_C(0xffffffff));
+  uint32_t x368;
+  fiat_p256_uint1 x369;
+  fiat_p256_subborrowx_u32(&x368, &x369, x367, x348, 0x0);
+  uint32_t x370;
+  fiat_p256_uint1 x371;
+  fiat_p256_subborrowx_u32(&x370, &x371, x369, x350, 0x0);
+  uint32_t x372;
+  fiat_p256_uint1 x373;
+  fiat_p256_subborrowx_u32(&x372, &x373, x371, x352, 0x0);
+  uint32_t x374;
+  fiat_p256_uint1 x375;
+  fiat_p256_subborrowx_u32(&x374, &x375, x373, x354, 0x1);
+  uint32_t x376;
+  fiat_p256_uint1 x377;
+  fiat_p256_subborrowx_u32(&x376, &x377, x375, x360, UINT32_C(0xffffffff));
+  uint32_t x378;
+  fiat_p256_uint1 x379;
+  fiat_p256_addcarryx_u32(&x378, &x379, x361, 0x0, 0x0);
+  uint32_t x380;
+  fiat_p256_uint1 x381;
+  fiat_p256_subborrowx_u32(&x380, &x381, x377, (fiat_p256_uint1)x378, 0x0);
+  uint32_t x382;
+  fiat_p256_cmovznz_u32(&x382, x381, x362, x340);
+  uint32_t x383;
+  fiat_p256_cmovznz_u32(&x383, x381, x364, x342);
+  uint32_t x384;
+  fiat_p256_cmovznz_u32(&x384, x381, x366, x346);
+  uint32_t x385;
+  fiat_p256_cmovznz_u32(&x385, x381, x368, x348);
+  uint32_t x386;
+  fiat_p256_cmovznz_u32(&x386, x381, x370, x350);
+  uint32_t x387;
+  fiat_p256_cmovznz_u32(&x387, x381, x372, x352);
+  uint32_t x388;
+  fiat_p256_cmovznz_u32(&x388, x381, x374, x354);
+  uint32_t x389;
+  fiat_p256_cmovznz_u32(&x389, x381, x376, x360);
+  out1[0] = x382;
+  out1[1] = x383;
+  out1[2] = x384;
+  out1[3] = x385;
+  out1[4] = x386;
+  out1[5] = x387;
+  out1[6] = x388;
+  out1[7] = x389;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffff]
+ */
+static void fiat_p256_nonzero(uint32_t* out1, const uint32_t arg1[8]) {
+  uint32_t x1 = ((arg1[0]) | ((arg1[1]) | ((arg1[2]) | ((arg1[3]) | ((arg1[4]) | ((arg1[5]) | ((arg1[6]) | ((arg1[7]) | (uint32_t)0x0))))))));
+  *out1 = x1;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_selectznz(uint32_t out1[8], fiat_p256_uint1 arg1, const uint32_t arg2[8], const uint32_t arg3[8]) {
+  uint32_t x1;
+  fiat_p256_cmovznz_u32(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint32_t x2;
+  fiat_p256_cmovznz_u32(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint32_t x3;
+  fiat_p256_cmovznz_u32(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint32_t x4;
+  fiat_p256_cmovznz_u32(&x4, arg1, (arg2[3]), (arg3[3]));
+  uint32_t x5;
+  fiat_p256_cmovznz_u32(&x5, arg1, (arg2[4]), (arg3[4]));
+  uint32_t x6;
+  fiat_p256_cmovznz_u32(&x6, arg1, (arg2[5]), (arg3[5]));
+  uint32_t x7;
+  fiat_p256_cmovznz_u32(&x7, arg1, (arg2[6]), (arg3[6]));
+  uint32_t x8;
+  fiat_p256_cmovznz_u32(&x8, arg1, (arg2[7]), (arg3[7]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+  out1[4] = x5;
+  out1[5] = x6;
+  out1[6] = x7;
+  out1[7] = x8;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ */
+static void fiat_p256_to_bytes(uint8_t out1[32], const uint32_t arg1[8]) {
+  uint32_t x1 = (arg1[7]);
+  uint32_t x2 = (arg1[6]);
+  uint32_t x3 = (arg1[5]);
+  uint32_t x4 = (arg1[4]);
+  uint32_t x5 = (arg1[3]);
+  uint32_t x6 = (arg1[2]);
+  uint32_t x7 = (arg1[1]);
+  uint32_t x8 = (arg1[0]);
+  uint32_t x9 = (x8 >> 8);
+  uint8_t x10 = (uint8_t)(x8 & UINT8_C(0xff));
+  uint32_t x11 = (x9 >> 8);
+  uint8_t x12 = (uint8_t)(x9 & UINT8_C(0xff));
+  uint8_t x13 = (uint8_t)(x11 >> 8);
+  uint8_t x14 = (uint8_t)(x11 & UINT8_C(0xff));
+  uint8_t x15 = (uint8_t)(x13 & UINT8_C(0xff));
+  uint32_t x16 = (x7 >> 8);
+  uint8_t x17 = (uint8_t)(x7 & UINT8_C(0xff));
+  uint32_t x18 = (x16 >> 8);
+  uint8_t x19 = (uint8_t)(x16 & UINT8_C(0xff));
+  uint8_t x20 = (uint8_t)(x18 >> 8);
+  uint8_t x21 = (uint8_t)(x18 & UINT8_C(0xff));
+  uint8_t x22 = (uint8_t)(x20 & UINT8_C(0xff));
+  uint32_t x23 = (x6 >> 8);
+  uint8_t x24 = (uint8_t)(x6 & UINT8_C(0xff));
+  uint32_t x25 = (x23 >> 8);
+  uint8_t x26 = (uint8_t)(x23 & UINT8_C(0xff));
+  uint8_t x27 = (uint8_t)(x25 >> 8);
+  uint8_t x28 = (uint8_t)(x25 & UINT8_C(0xff));
+  uint8_t x29 = (uint8_t)(x27 & UINT8_C(0xff));
+  uint32_t x30 = (x5 >> 8);
+  uint8_t x31 = (uint8_t)(x5 & UINT8_C(0xff));
+  uint32_t x32 = (x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint8_t x34 = (uint8_t)(x32 >> 8);
+  uint8_t x35 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint8_t x36 = (uint8_t)(x34 & UINT8_C(0xff));
+  uint32_t x37 = (x4 >> 8);
+  uint8_t x38 = (uint8_t)(x4 & UINT8_C(0xff));
+  uint32_t x39 = (x37 >> 8);
+  uint8_t x40 = (uint8_t)(x37 & UINT8_C(0xff));
+  uint8_t x41 = (uint8_t)(x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint8_t x43 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint32_t x44 = (x3 >> 8);
+  uint8_t x45 = (uint8_t)(x3 & UINT8_C(0xff));
+  uint32_t x46 = (x44 >> 8);
+  uint8_t x47 = (uint8_t)(x44 & UINT8_C(0xff));
+  uint8_t x48 = (uint8_t)(x46 >> 8);
+  uint8_t x49 = (uint8_t)(x46 & UINT8_C(0xff));
+  uint8_t x50 = (uint8_t)(x48 & UINT8_C(0xff));
+  uint32_t x51 = (x2 >> 8);
+  uint8_t x52 = (uint8_t)(x2 & UINT8_C(0xff));
+  uint32_t x53 = (x51 >> 8);
+  uint8_t x54 = (uint8_t)(x51 & UINT8_C(0xff));
+  uint8_t x55 = (uint8_t)(x53 >> 8);
+  uint8_t x56 = (uint8_t)(x53 & UINT8_C(0xff));
+  uint8_t x57 = (uint8_t)(x55 & UINT8_C(0xff));
+  uint32_t x58 = (x1 >> 8);
+  uint8_t x59 = (uint8_t)(x1 & UINT8_C(0xff));
+  uint32_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint8_t x62 = (uint8_t)(x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x15;
+  out1[4] = x17;
+  out1[5] = x19;
+  out1[6] = x21;
+  out1[7] = x22;
+  out1[8] = x24;
+  out1[9] = x26;
+  out1[10] = x28;
+  out1[11] = x29;
+  out1[12] = x31;
+  out1[13] = x33;
+  out1[14] = x35;
+  out1[15] = x36;
+  out1[16] = x38;
+  out1[17] = x40;
+  out1[18] = x42;
+  out1[19] = x43;
+  out1[20] = x45;
+  out1[21] = x47;
+  out1[22] = x49;
+  out1[23] = x50;
+  out1[24] = x52;
+  out1[25] = x54;
+  out1[26] = x56;
+  out1[27] = x57;
+  out1[28] = x59;
+  out1[29] = x61;
+  out1[30] = x63;
+  out1[31] = x62;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff], [0x0 ~> 0xffffffff]]
+ */
+static void fiat_p256_from_bytes(uint32_t out1[8], const uint8_t arg1[32]) {
+  uint32_t x1 = ((uint32_t)(arg1[31]) << 24);
+  uint32_t x2 = ((uint32_t)(arg1[30]) << 16);
+  uint32_t x3 = ((uint32_t)(arg1[29]) << 8);
+  uint8_t x4 = (arg1[28]);
+  uint32_t x5 = ((uint32_t)(arg1[27]) << 24);
+  uint32_t x6 = ((uint32_t)(arg1[26]) << 16);
+  uint32_t x7 = ((uint32_t)(arg1[25]) << 8);
+  uint8_t x8 = (arg1[24]);
+  uint32_t x9 = ((uint32_t)(arg1[23]) << 24);
+  uint32_t x10 = ((uint32_t)(arg1[22]) << 16);
+  uint32_t x11 = ((uint32_t)(arg1[21]) << 8);
+  uint8_t x12 = (arg1[20]);
+  uint32_t x13 = ((uint32_t)(arg1[19]) << 24);
+  uint32_t x14 = ((uint32_t)(arg1[18]) << 16);
+  uint32_t x15 = ((uint32_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint32_t x17 = ((uint32_t)(arg1[15]) << 24);
+  uint32_t x18 = ((uint32_t)(arg1[14]) << 16);
+  uint32_t x19 = ((uint32_t)(arg1[13]) << 8);
+  uint8_t x20 = (arg1[12]);
+  uint32_t x21 = ((uint32_t)(arg1[11]) << 24);
+  uint32_t x22 = ((uint32_t)(arg1[10]) << 16);
+  uint32_t x23 = ((uint32_t)(arg1[9]) << 8);
+  uint8_t x24 = (arg1[8]);
+  uint32_t x25 = ((uint32_t)(arg1[7]) << 24);
+  uint32_t x26 = ((uint32_t)(arg1[6]) << 16);
+  uint32_t x27 = ((uint32_t)(arg1[5]) << 8);
+  uint8_t x28 = (arg1[4]);
+  uint32_t x29 = ((uint32_t)(arg1[3]) << 24);
+  uint32_t x30 = ((uint32_t)(arg1[2]) << 16);
+  uint32_t x31 = ((uint32_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint32_t x33 = (x32 + (x31 + (x30 + x29)));
+  uint32_t x34 = (x33 & UINT32_C(0xffffffff));
+  uint32_t x35 = (x4 + (x3 + (x2 + x1)));
+  uint32_t x36 = (x8 + (x7 + (x6 + x5)));
+  uint32_t x37 = (x12 + (x11 + (x10 + x9)));
+  uint32_t x38 = (x16 + (x15 + (x14 + x13)));
+  uint32_t x39 = (x20 + (x19 + (x18 + x17)));
+  uint32_t x40 = (x24 + (x23 + (x22 + x21)));
+  uint32_t x41 = (x28 + (x27 + (x26 + x25)));
+  uint32_t x42 = (x41 & UINT32_C(0xffffffff));
+  uint32_t x43 = (x40 & UINT32_C(0xffffffff));
+  uint32_t x44 = (x39 & UINT32_C(0xffffffff));
+  uint32_t x45 = (x38 & UINT32_C(0xffffffff));
+  uint32_t x46 = (x37 & UINT32_C(0xffffffff));
+  uint32_t x47 = (x36 & UINT32_C(0xffffffff));
+  out1[0] = x34;
+  out1[1] = x42;
+  out1[2] = x43;
+  out1[3] = x44;
+  out1[4] = x45;
+  out1[5] = x46;
+  out1[6] = x47;
+  out1[7] = x35;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h
new file mode 100644
index 0000000..7d97e0a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h	
@@ -0,0 +1,1217 @@
+/* Autogenerated */
+/* curve description: p256 */
+/* requested operations: (all) */
+/* m = 0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff (from "2^256 - 2^224 + 2^192 + 2^96 - 1") */
+/* machine_wordsize = 64 (from "64") */
+/*                                                                    */
+/* NOTE: In addition to the bounds specified above each function, all */
+/*   functions synthesized for this Montgomery arithmetic require the */
+/*   input to be strictly less than the prime modulus (m), and also   */
+/*   require the input to be in the unique saturated representation.  */
+/*   All functions also ensure that these two properties are true of  */
+/*   return values.                                                   */
+
+#include <stdint.h>
+typedef unsigned char fiat_p256_uint1;
+typedef signed char fiat_p256_int1;
+typedef signed __int128 fiat_p256_int128;
+typedef unsigned __int128 fiat_p256_uint128;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_addcarryx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_uint128 x1 = ((arg1 + (fiat_p256_uint128)arg2) + arg3);
+  uint64_t x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  fiat_p256_uint1 x3 = (fiat_p256_uint1)(x1 >> 64);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_subborrowx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_int128 x1 = ((arg2 - (fiat_p256_int128)arg1) - arg3);
+  fiat_p256_int1 x2 = (fiat_p256_int1)(x1 >> 64);
+  uint64_t x3 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  *out1 = x3;
+  *out2 = (fiat_p256_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0xffffffffffffffff]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_mulx_u64(uint64_t* out1, uint64_t* out2, uint64_t arg1, uint64_t arg2) {
+  fiat_p256_uint128 x1 = ((fiat_p256_uint128)arg1 * arg2);
+  uint64_t x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  uint64_t x3 = (uint64_t)(x1 >> 64);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_cmovznz_u64(uint64_t* out1, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_uint1 x1 = (!(!arg1));
+  uint64_t x2 = ((fiat_p256_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint64_t x3 = ((value_barrier_u64(x2) & arg3) | (value_barrier_u64(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_mul(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1 = (arg1[1]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[3]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5;
+  uint64_t x6;
+  fiat_p256_mulx_u64(&x5, &x6, x4, (arg2[3]));
+  uint64_t x7;
+  uint64_t x8;
+  fiat_p256_mulx_u64(&x7, &x8, x4, (arg2[2]));
+  uint64_t x9;
+  uint64_t x10;
+  fiat_p256_mulx_u64(&x9, &x10, x4, (arg2[1]));
+  uint64_t x11;
+  uint64_t x12;
+  fiat_p256_mulx_u64(&x11, &x12, x4, (arg2[0]));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x9, x12);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u64(&x15, &x16, x14, x7, x10);
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_addcarryx_u64(&x17, &x18, x16, x5, x8);
+  uint64_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_addcarryx_u64(&x19, &x20, x18, 0x0, x6);
+  uint64_t x21;
+  uint64_t x22;
+  fiat_p256_mulx_u64(&x21, &x22, x11, UINT64_C(0xffffffff00000001));
+  uint64_t x23;
+  uint64_t x24;
+  fiat_p256_mulx_u64(&x23, &x24, x11, UINT32_C(0xffffffff));
+  uint64_t x25;
+  uint64_t x26;
+  fiat_p256_mulx_u64(&x25, &x26, x11, UINT64_C(0xffffffffffffffff));
+  uint64_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u64(&x27, &x28, 0x0, x23, x26);
+  uint64_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u64(&x29, &x30, x28, 0x0, x24);
+  uint64_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u64(&x31, &x32, 0x0, x25, x11);
+  uint64_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u64(&x33, &x34, x32, x27, x13);
+  uint64_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u64(&x35, &x36, x34, x29, x15);
+  uint64_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u64(&x37, &x38, x36, x21, x17);
+  uint64_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u64(&x39, &x40, x38, x22, x19);
+  uint64_t x41;
+  fiat_p256_uint1 x42;
+  fiat_p256_addcarryx_u64(&x41, &x42, x40, 0x0, 0x0);
+  uint64_t x43;
+  uint64_t x44;
+  fiat_p256_mulx_u64(&x43, &x44, x1, (arg2[3]));
+  uint64_t x45;
+  uint64_t x46;
+  fiat_p256_mulx_u64(&x45, &x46, x1, (arg2[2]));
+  uint64_t x47;
+  uint64_t x48;
+  fiat_p256_mulx_u64(&x47, &x48, x1, (arg2[1]));
+  uint64_t x49;
+  uint64_t x50;
+  fiat_p256_mulx_u64(&x49, &x50, x1, (arg2[0]));
+  uint64_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u64(&x51, &x52, 0x0, x47, x50);
+  uint64_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u64(&x53, &x54, x52, x45, x48);
+  uint64_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u64(&x55, &x56, x54, x43, x46);
+  uint64_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u64(&x57, &x58, x56, 0x0, x44);
+  uint64_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u64(&x59, &x60, 0x0, x49, x33);
+  uint64_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u64(&x61, &x62, x60, x51, x35);
+  uint64_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u64(&x63, &x64, x62, x53, x37);
+  uint64_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u64(&x65, &x66, x64, x55, x39);
+  uint64_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u64(&x67, &x68, x66, x57, (fiat_p256_uint1)x41);
+  uint64_t x69;
+  uint64_t x70;
+  fiat_p256_mulx_u64(&x69, &x70, x59, UINT64_C(0xffffffff00000001));
+  uint64_t x71;
+  uint64_t x72;
+  fiat_p256_mulx_u64(&x71, &x72, x59, UINT32_C(0xffffffff));
+  uint64_t x73;
+  uint64_t x74;
+  fiat_p256_mulx_u64(&x73, &x74, x59, UINT64_C(0xffffffffffffffff));
+  uint64_t x75;
+  fiat_p256_uint1 x76;
+  fiat_p256_addcarryx_u64(&x75, &x76, 0x0, x71, x74);
+  uint64_t x77;
+  fiat_p256_uint1 x78;
+  fiat_p256_addcarryx_u64(&x77, &x78, x76, 0x0, x72);
+  uint64_t x79;
+  fiat_p256_uint1 x80;
+  fiat_p256_addcarryx_u64(&x79, &x80, 0x0, x73, x59);
+  uint64_t x81;
+  fiat_p256_uint1 x82;
+  fiat_p256_addcarryx_u64(&x81, &x82, x80, x75, x61);
+  uint64_t x83;
+  fiat_p256_uint1 x84;
+  fiat_p256_addcarryx_u64(&x83, &x84, x82, x77, x63);
+  uint64_t x85;
+  fiat_p256_uint1 x86;
+  fiat_p256_addcarryx_u64(&x85, &x86, x84, x69, x65);
+  uint64_t x87;
+  fiat_p256_uint1 x88;
+  fiat_p256_addcarryx_u64(&x87, &x88, x86, x70, x67);
+  uint64_t x89;
+  fiat_p256_uint1 x90;
+  fiat_p256_addcarryx_u64(&x89, &x90, x88, 0x0, x68);
+  uint64_t x91;
+  uint64_t x92;
+  fiat_p256_mulx_u64(&x91, &x92, x2, (arg2[3]));
+  uint64_t x93;
+  uint64_t x94;
+  fiat_p256_mulx_u64(&x93, &x94, x2, (arg2[2]));
+  uint64_t x95;
+  uint64_t x96;
+  fiat_p256_mulx_u64(&x95, &x96, x2, (arg2[1]));
+  uint64_t x97;
+  uint64_t x98;
+  fiat_p256_mulx_u64(&x97, &x98, x2, (arg2[0]));
+  uint64_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x95, x98);
+  uint64_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u64(&x101, &x102, x100, x93, x96);
+  uint64_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u64(&x103, &x104, x102, x91, x94);
+  uint64_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u64(&x105, &x106, x104, 0x0, x92);
+  uint64_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u64(&x107, &x108, 0x0, x97, x81);
+  uint64_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u64(&x109, &x110, x108, x99, x83);
+  uint64_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u64(&x111, &x112, x110, x101, x85);
+  uint64_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u64(&x113, &x114, x112, x103, x87);
+  uint64_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u64(&x115, &x116, x114, x105, x89);
+  uint64_t x117;
+  uint64_t x118;
+  fiat_p256_mulx_u64(&x117, &x118, x107, UINT64_C(0xffffffff00000001));
+  uint64_t x119;
+  uint64_t x120;
+  fiat_p256_mulx_u64(&x119, &x120, x107, UINT32_C(0xffffffff));
+  uint64_t x121;
+  uint64_t x122;
+  fiat_p256_mulx_u64(&x121, &x122, x107, UINT64_C(0xffffffffffffffff));
+  uint64_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u64(&x123, &x124, 0x0, x119, x122);
+  uint64_t x125;
+  fiat_p256_uint1 x126;
+  fiat_p256_addcarryx_u64(&x125, &x126, x124, 0x0, x120);
+  uint64_t x127;
+  fiat_p256_uint1 x128;
+  fiat_p256_addcarryx_u64(&x127, &x128, 0x0, x121, x107);
+  uint64_t x129;
+  fiat_p256_uint1 x130;
+  fiat_p256_addcarryx_u64(&x129, &x130, x128, x123, x109);
+  uint64_t x131;
+  fiat_p256_uint1 x132;
+  fiat_p256_addcarryx_u64(&x131, &x132, x130, x125, x111);
+  uint64_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u64(&x133, &x134, x132, x117, x113);
+  uint64_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u64(&x135, &x136, x134, x118, x115);
+  uint64_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u64(&x137, &x138, x136, 0x0, x116);
+  uint64_t x139;
+  uint64_t x140;
+  fiat_p256_mulx_u64(&x139, &x140, x3, (arg2[3]));
+  uint64_t x141;
+  uint64_t x142;
+  fiat_p256_mulx_u64(&x141, &x142, x3, (arg2[2]));
+  uint64_t x143;
+  uint64_t x144;
+  fiat_p256_mulx_u64(&x143, &x144, x3, (arg2[1]));
+  uint64_t x145;
+  uint64_t x146;
+  fiat_p256_mulx_u64(&x145, &x146, x3, (arg2[0]));
+  uint64_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u64(&x147, &x148, 0x0, x143, x146);
+  uint64_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u64(&x149, &x150, x148, x141, x144);
+  uint64_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u64(&x151, &x152, x150, x139, x142);
+  uint64_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u64(&x153, &x154, x152, 0x0, x140);
+  uint64_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u64(&x155, &x156, 0x0, x145, x129);
+  uint64_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u64(&x157, &x158, x156, x147, x131);
+  uint64_t x159;
+  fiat_p256_uint1 x160;
+  fiat_p256_addcarryx_u64(&x159, &x160, x158, x149, x133);
+  uint64_t x161;
+  fiat_p256_uint1 x162;
+  fiat_p256_addcarryx_u64(&x161, &x162, x160, x151, x135);
+  uint64_t x163;
+  fiat_p256_uint1 x164;
+  fiat_p256_addcarryx_u64(&x163, &x164, x162, x153, x137);
+  uint64_t x165;
+  uint64_t x166;
+  fiat_p256_mulx_u64(&x165, &x166, x155, UINT64_C(0xffffffff00000001));
+  uint64_t x167;
+  uint64_t x168;
+  fiat_p256_mulx_u64(&x167, &x168, x155, UINT32_C(0xffffffff));
+  uint64_t x169;
+  uint64_t x170;
+  fiat_p256_mulx_u64(&x169, &x170, x155, UINT64_C(0xffffffffffffffff));
+  uint64_t x171;
+  fiat_p256_uint1 x172;
+  fiat_p256_addcarryx_u64(&x171, &x172, 0x0, x167, x170);
+  uint64_t x173;
+  fiat_p256_uint1 x174;
+  fiat_p256_addcarryx_u64(&x173, &x174, x172, 0x0, x168);
+  uint64_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u64(&x175, &x176, 0x0, x169, x155);
+  uint64_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u64(&x177, &x178, x176, x171, x157);
+  uint64_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u64(&x179, &x180, x178, x173, x159);
+  uint64_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u64(&x181, &x182, x180, x165, x161);
+  uint64_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u64(&x183, &x184, x182, x166, x163);
+  uint64_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u64(&x185, &x186, x184, 0x0, x164);
+  uint64_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_subborrowx_u64(&x187, &x188, 0x0, x177, UINT64_C(0xffffffffffffffff));
+  uint64_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_subborrowx_u64(&x189, &x190, x188, x179, UINT32_C(0xffffffff));
+  uint64_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_subborrowx_u64(&x191, &x192, x190, x181, 0x0);
+  uint64_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_subborrowx_u64(&x193, &x194, x192, x183, UINT64_C(0xffffffff00000001));
+  uint64_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_subborrowx_u64(&x195, &x196, x194, x185, 0x0);
+  uint64_t x197;
+  fiat_p256_cmovznz_u64(&x197, x196, x187, x177);
+  uint64_t x198;
+  fiat_p256_cmovznz_u64(&x198, x196, x189, x179);
+  uint64_t x199;
+  fiat_p256_cmovznz_u64(&x199, x196, x191, x181);
+  uint64_t x200;
+  fiat_p256_cmovznz_u64(&x200, x196, x193, x183);
+  out1[0] = x197;
+  out1[1] = x198;
+  out1[2] = x199;
+  out1[3] = x200;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_square(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[1]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[3]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5;
+  uint64_t x6;
+  fiat_p256_mulx_u64(&x5, &x6, x4, (arg1[3]));
+  uint64_t x7;
+  uint64_t x8;
+  fiat_p256_mulx_u64(&x7, &x8, x4, (arg1[2]));
+  uint64_t x9;
+  uint64_t x10;
+  fiat_p256_mulx_u64(&x9, &x10, x4, (arg1[1]));
+  uint64_t x11;
+  uint64_t x12;
+  fiat_p256_mulx_u64(&x11, &x12, x4, (arg1[0]));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x9, x12);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u64(&x15, &x16, x14, x7, x10);
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_addcarryx_u64(&x17, &x18, x16, x5, x8);
+  uint64_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_addcarryx_u64(&x19, &x20, x18, 0x0, x6);
+  uint64_t x21;
+  uint64_t x22;
+  fiat_p256_mulx_u64(&x21, &x22, x11, UINT64_C(0xffffffff00000001));
+  uint64_t x23;
+  uint64_t x24;
+  fiat_p256_mulx_u64(&x23, &x24, x11, UINT32_C(0xffffffff));
+  uint64_t x25;
+  uint64_t x26;
+  fiat_p256_mulx_u64(&x25, &x26, x11, UINT64_C(0xffffffffffffffff));
+  uint64_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u64(&x27, &x28, 0x0, x23, x26);
+  uint64_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u64(&x29, &x30, x28, 0x0, x24);
+  uint64_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u64(&x31, &x32, 0x0, x25, x11);
+  uint64_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u64(&x33, &x34, x32, x27, x13);
+  uint64_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u64(&x35, &x36, x34, x29, x15);
+  uint64_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u64(&x37, &x38, x36, x21, x17);
+  uint64_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u64(&x39, &x40, x38, x22, x19);
+  uint64_t x41;
+  fiat_p256_uint1 x42;
+  fiat_p256_addcarryx_u64(&x41, &x42, x40, 0x0, 0x0);
+  uint64_t x43;
+  uint64_t x44;
+  fiat_p256_mulx_u64(&x43, &x44, x1, (arg1[3]));
+  uint64_t x45;
+  uint64_t x46;
+  fiat_p256_mulx_u64(&x45, &x46, x1, (arg1[2]));
+  uint64_t x47;
+  uint64_t x48;
+  fiat_p256_mulx_u64(&x47, &x48, x1, (arg1[1]));
+  uint64_t x49;
+  uint64_t x50;
+  fiat_p256_mulx_u64(&x49, &x50, x1, (arg1[0]));
+  uint64_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u64(&x51, &x52, 0x0, x47, x50);
+  uint64_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u64(&x53, &x54, x52, x45, x48);
+  uint64_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u64(&x55, &x56, x54, x43, x46);
+  uint64_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u64(&x57, &x58, x56, 0x0, x44);
+  uint64_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u64(&x59, &x60, 0x0, x49, x33);
+  uint64_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u64(&x61, &x62, x60, x51, x35);
+  uint64_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u64(&x63, &x64, x62, x53, x37);
+  uint64_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u64(&x65, &x66, x64, x55, x39);
+  uint64_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u64(&x67, &x68, x66, x57, (fiat_p256_uint1)x41);
+  uint64_t x69;
+  uint64_t x70;
+  fiat_p256_mulx_u64(&x69, &x70, x59, UINT64_C(0xffffffff00000001));
+  uint64_t x71;
+  uint64_t x72;
+  fiat_p256_mulx_u64(&x71, &x72, x59, UINT32_C(0xffffffff));
+  uint64_t x73;
+  uint64_t x74;
+  fiat_p256_mulx_u64(&x73, &x74, x59, UINT64_C(0xffffffffffffffff));
+  uint64_t x75;
+  fiat_p256_uint1 x76;
+  fiat_p256_addcarryx_u64(&x75, &x76, 0x0, x71, x74);
+  uint64_t x77;
+  fiat_p256_uint1 x78;
+  fiat_p256_addcarryx_u64(&x77, &x78, x76, 0x0, x72);
+  uint64_t x79;
+  fiat_p256_uint1 x80;
+  fiat_p256_addcarryx_u64(&x79, &x80, 0x0, x73, x59);
+  uint64_t x81;
+  fiat_p256_uint1 x82;
+  fiat_p256_addcarryx_u64(&x81, &x82, x80, x75, x61);
+  uint64_t x83;
+  fiat_p256_uint1 x84;
+  fiat_p256_addcarryx_u64(&x83, &x84, x82, x77, x63);
+  uint64_t x85;
+  fiat_p256_uint1 x86;
+  fiat_p256_addcarryx_u64(&x85, &x86, x84, x69, x65);
+  uint64_t x87;
+  fiat_p256_uint1 x88;
+  fiat_p256_addcarryx_u64(&x87, &x88, x86, x70, x67);
+  uint64_t x89;
+  fiat_p256_uint1 x90;
+  fiat_p256_addcarryx_u64(&x89, &x90, x88, 0x0, x68);
+  uint64_t x91;
+  uint64_t x92;
+  fiat_p256_mulx_u64(&x91, &x92, x2, (arg1[3]));
+  uint64_t x93;
+  uint64_t x94;
+  fiat_p256_mulx_u64(&x93, &x94, x2, (arg1[2]));
+  uint64_t x95;
+  uint64_t x96;
+  fiat_p256_mulx_u64(&x95, &x96, x2, (arg1[1]));
+  uint64_t x97;
+  uint64_t x98;
+  fiat_p256_mulx_u64(&x97, &x98, x2, (arg1[0]));
+  uint64_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x95, x98);
+  uint64_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u64(&x101, &x102, x100, x93, x96);
+  uint64_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u64(&x103, &x104, x102, x91, x94);
+  uint64_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u64(&x105, &x106, x104, 0x0, x92);
+  uint64_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u64(&x107, &x108, 0x0, x97, x81);
+  uint64_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u64(&x109, &x110, x108, x99, x83);
+  uint64_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u64(&x111, &x112, x110, x101, x85);
+  uint64_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u64(&x113, &x114, x112, x103, x87);
+  uint64_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u64(&x115, &x116, x114, x105, x89);
+  uint64_t x117;
+  uint64_t x118;
+  fiat_p256_mulx_u64(&x117, &x118, x107, UINT64_C(0xffffffff00000001));
+  uint64_t x119;
+  uint64_t x120;
+  fiat_p256_mulx_u64(&x119, &x120, x107, UINT32_C(0xffffffff));
+  uint64_t x121;
+  uint64_t x122;
+  fiat_p256_mulx_u64(&x121, &x122, x107, UINT64_C(0xffffffffffffffff));
+  uint64_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u64(&x123, &x124, 0x0, x119, x122);
+  uint64_t x125;
+  fiat_p256_uint1 x126;
+  fiat_p256_addcarryx_u64(&x125, &x126, x124, 0x0, x120);
+  uint64_t x127;
+  fiat_p256_uint1 x128;
+  fiat_p256_addcarryx_u64(&x127, &x128, 0x0, x121, x107);
+  uint64_t x129;
+  fiat_p256_uint1 x130;
+  fiat_p256_addcarryx_u64(&x129, &x130, x128, x123, x109);
+  uint64_t x131;
+  fiat_p256_uint1 x132;
+  fiat_p256_addcarryx_u64(&x131, &x132, x130, x125, x111);
+  uint64_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u64(&x133, &x134, x132, x117, x113);
+  uint64_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u64(&x135, &x136, x134, x118, x115);
+  uint64_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u64(&x137, &x138, x136, 0x0, x116);
+  uint64_t x139;
+  uint64_t x140;
+  fiat_p256_mulx_u64(&x139, &x140, x3, (arg1[3]));
+  uint64_t x141;
+  uint64_t x142;
+  fiat_p256_mulx_u64(&x141, &x142, x3, (arg1[2]));
+  uint64_t x143;
+  uint64_t x144;
+  fiat_p256_mulx_u64(&x143, &x144, x3, (arg1[1]));
+  uint64_t x145;
+  uint64_t x146;
+  fiat_p256_mulx_u64(&x145, &x146, x3, (arg1[0]));
+  uint64_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u64(&x147, &x148, 0x0, x143, x146);
+  uint64_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u64(&x149, &x150, x148, x141, x144);
+  uint64_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u64(&x151, &x152, x150, x139, x142);
+  uint64_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u64(&x153, &x154, x152, 0x0, x140);
+  uint64_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u64(&x155, &x156, 0x0, x145, x129);
+  uint64_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u64(&x157, &x158, x156, x147, x131);
+  uint64_t x159;
+  fiat_p256_uint1 x160;
+  fiat_p256_addcarryx_u64(&x159, &x160, x158, x149, x133);
+  uint64_t x161;
+  fiat_p256_uint1 x162;
+  fiat_p256_addcarryx_u64(&x161, &x162, x160, x151, x135);
+  uint64_t x163;
+  fiat_p256_uint1 x164;
+  fiat_p256_addcarryx_u64(&x163, &x164, x162, x153, x137);
+  uint64_t x165;
+  uint64_t x166;
+  fiat_p256_mulx_u64(&x165, &x166, x155, UINT64_C(0xffffffff00000001));
+  uint64_t x167;
+  uint64_t x168;
+  fiat_p256_mulx_u64(&x167, &x168, x155, UINT32_C(0xffffffff));
+  uint64_t x169;
+  uint64_t x170;
+  fiat_p256_mulx_u64(&x169, &x170, x155, UINT64_C(0xffffffffffffffff));
+  uint64_t x171;
+  fiat_p256_uint1 x172;
+  fiat_p256_addcarryx_u64(&x171, &x172, 0x0, x167, x170);
+  uint64_t x173;
+  fiat_p256_uint1 x174;
+  fiat_p256_addcarryx_u64(&x173, &x174, x172, 0x0, x168);
+  uint64_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u64(&x175, &x176, 0x0, x169, x155);
+  uint64_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u64(&x177, &x178, x176, x171, x157);
+  uint64_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u64(&x179, &x180, x178, x173, x159);
+  uint64_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u64(&x181, &x182, x180, x165, x161);
+  uint64_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u64(&x183, &x184, x182, x166, x163);
+  uint64_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u64(&x185, &x186, x184, 0x0, x164);
+  uint64_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_subborrowx_u64(&x187, &x188, 0x0, x177, UINT64_C(0xffffffffffffffff));
+  uint64_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_subborrowx_u64(&x189, &x190, x188, x179, UINT32_C(0xffffffff));
+  uint64_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_subborrowx_u64(&x191, &x192, x190, x181, 0x0);
+  uint64_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_subborrowx_u64(&x193, &x194, x192, x183, UINT64_C(0xffffffff00000001));
+  uint64_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_subborrowx_u64(&x195, &x196, x194, x185, 0x0);
+  uint64_t x197;
+  fiat_p256_cmovznz_u64(&x197, x196, x187, x177);
+  uint64_t x198;
+  fiat_p256_cmovznz_u64(&x198, x196, x189, x179);
+  uint64_t x199;
+  fiat_p256_cmovznz_u64(&x199, x196, x191, x181);
+  uint64_t x200;
+  fiat_p256_cmovznz_u64(&x200, x196, x193, x183);
+  out1[0] = x197;
+  out1[1] = x198;
+  out1[2] = x199;
+  out1[3] = x200;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_add(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_addcarryx_u64(&x1, &x2, 0x0, (arg2[0]), (arg1[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_addcarryx_u64(&x3, &x4, x2, (arg2[1]), (arg1[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_addcarryx_u64(&x5, &x6, x4, (arg2[2]), (arg1[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_addcarryx_u64(&x7, &x8, x6, (arg2[3]), (arg1[3]));
+  uint64_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u64(&x9, &x10, 0x0, x1, UINT64_C(0xffffffffffffffff));
+  uint64_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u64(&x11, &x12, x10, x3, UINT32_C(0xffffffff));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u64(&x13, &x14, x12, x5, 0x0);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u64(&x15, &x16, x14, x7, UINT64_C(0xffffffff00000001));
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_subborrowx_u64(&x17, &x18, x16, x8, 0x0);
+  uint64_t x19;
+  fiat_p256_cmovznz_u64(&x19, x18, x9, x1);
+  uint64_t x20;
+  fiat_p256_cmovznz_u64(&x20, x18, x11, x3);
+  uint64_t x21;
+  fiat_p256_cmovznz_u64(&x21, x18, x13, x5);
+  uint64_t x22;
+  fiat_p256_cmovznz_u64(&x22, x18, x15, x7);
+  out1[0] = x19;
+  out1[1] = x20;
+  out1[2] = x21;
+  out1[3] = x22;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_sub(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u64(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u64(&x3, &x4, x2, (arg1[1]), (arg2[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u64(&x5, &x6, x4, (arg1[2]), (arg2[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u64(&x7, &x8, x6, (arg1[3]), (arg2[3]));
+  uint64_t x9;
+  fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, (x9 & UINT64_C(0xffffffffffffffff)), x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, (x9 & UINT32_C(0xffffffff)), x3);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, x13, 0x0, x5);
+  uint64_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u64(&x16, &x17, x15, (x9 & UINT64_C(0xffffffff00000001)), x7);
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x16;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_opp(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u64(&x1, &x2, 0x0, 0x0, (arg1[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u64(&x3, &x4, x2, 0x0, (arg1[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u64(&x5, &x6, x4, 0x0, (arg1[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u64(&x7, &x8, x6, 0x0, (arg1[3]));
+  uint64_t x9;
+  fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, (x9 & UINT64_C(0xffffffffffffffff)), x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, (x9 & UINT32_C(0xffffffff)), x3);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, x13, 0x0, x5);
+  uint64_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u64(&x16, &x17, x15, (x9 & UINT64_C(0xffffffff00000001)), x7);
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x16;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_from_montgomery(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[0]);
+  uint64_t x2;
+  uint64_t x3;
+  fiat_p256_mulx_u64(&x2, &x3, x1, UINT64_C(0xffffffff00000001));
+  uint64_t x4;
+  uint64_t x5;
+  fiat_p256_mulx_u64(&x4, &x5, x1, UINT32_C(0xffffffff));
+  uint64_t x6;
+  uint64_t x7;
+  fiat_p256_mulx_u64(&x6, &x7, x1, UINT64_C(0xffffffffffffffff));
+  uint64_t x8;
+  fiat_p256_uint1 x9;
+  fiat_p256_addcarryx_u64(&x8, &x9, 0x0, x4, x7);
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, x6, x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, x8, 0x0);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, 0x0, (arg1[1]), x12);
+  uint64_t x16;
+  uint64_t x17;
+  fiat_p256_mulx_u64(&x16, &x17, x14, UINT64_C(0xffffffff00000001));
+  uint64_t x18;
+  uint64_t x19;
+  fiat_p256_mulx_u64(&x18, &x19, x14, UINT32_C(0xffffffff));
+  uint64_t x20;
+  uint64_t x21;
+  fiat_p256_mulx_u64(&x20, &x21, x14, UINT64_C(0xffffffffffffffff));
+  uint64_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u64(&x22, &x23, 0x0, x18, x21);
+  uint64_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u64(&x24, &x25, x9, 0x0, x5);
+  uint64_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u64(&x26, &x27, x13, x24, 0x0);
+  uint64_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u64(&x28, &x29, x15, 0x0, x26);
+  uint64_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u64(&x30, &x31, 0x0, x20, x14);
+  uint64_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u64(&x32, &x33, x31, x22, x28);
+  uint64_t x34;
+  fiat_p256_uint1 x35;
+  fiat_p256_addcarryx_u64(&x34, &x35, x23, 0x0, x19);
+  uint64_t x36;
+  fiat_p256_uint1 x37;
+  fiat_p256_addcarryx_u64(&x36, &x37, x33, x34, x2);
+  uint64_t x38;
+  fiat_p256_uint1 x39;
+  fiat_p256_addcarryx_u64(&x38, &x39, x37, x16, x3);
+  uint64_t x40;
+  fiat_p256_uint1 x41;
+  fiat_p256_addcarryx_u64(&x40, &x41, 0x0, (arg1[2]), x32);
+  uint64_t x42;
+  fiat_p256_uint1 x43;
+  fiat_p256_addcarryx_u64(&x42, &x43, x41, 0x0, x36);
+  uint64_t x44;
+  fiat_p256_uint1 x45;
+  fiat_p256_addcarryx_u64(&x44, &x45, x43, 0x0, x38);
+  uint64_t x46;
+  uint64_t x47;
+  fiat_p256_mulx_u64(&x46, &x47, x40, UINT64_C(0xffffffff00000001));
+  uint64_t x48;
+  uint64_t x49;
+  fiat_p256_mulx_u64(&x48, &x49, x40, UINT32_C(0xffffffff));
+  uint64_t x50;
+  uint64_t x51;
+  fiat_p256_mulx_u64(&x50, &x51, x40, UINT64_C(0xffffffffffffffff));
+  uint64_t x52;
+  fiat_p256_uint1 x53;
+  fiat_p256_addcarryx_u64(&x52, &x53, 0x0, x48, x51);
+  uint64_t x54;
+  fiat_p256_uint1 x55;
+  fiat_p256_addcarryx_u64(&x54, &x55, 0x0, x50, x40);
+  uint64_t x56;
+  fiat_p256_uint1 x57;
+  fiat_p256_addcarryx_u64(&x56, &x57, x55, x52, x42);
+  uint64_t x58;
+  fiat_p256_uint1 x59;
+  fiat_p256_addcarryx_u64(&x58, &x59, x53, 0x0, x49);
+  uint64_t x60;
+  fiat_p256_uint1 x61;
+  fiat_p256_addcarryx_u64(&x60, &x61, x57, x58, x44);
+  uint64_t x62;
+  fiat_p256_uint1 x63;
+  fiat_p256_addcarryx_u64(&x62, &x63, x39, x17, 0x0);
+  uint64_t x64;
+  fiat_p256_uint1 x65;
+  fiat_p256_addcarryx_u64(&x64, &x65, x45, 0x0, x62);
+  uint64_t x66;
+  fiat_p256_uint1 x67;
+  fiat_p256_addcarryx_u64(&x66, &x67, x61, x46, x64);
+  uint64_t x68;
+  fiat_p256_uint1 x69;
+  fiat_p256_addcarryx_u64(&x68, &x69, 0x0, (arg1[3]), x56);
+  uint64_t x70;
+  fiat_p256_uint1 x71;
+  fiat_p256_addcarryx_u64(&x70, &x71, x69, 0x0, x60);
+  uint64_t x72;
+  fiat_p256_uint1 x73;
+  fiat_p256_addcarryx_u64(&x72, &x73, x71, 0x0, x66);
+  uint64_t x74;
+  uint64_t x75;
+  fiat_p256_mulx_u64(&x74, &x75, x68, UINT64_C(0xffffffff00000001));
+  uint64_t x76;
+  uint64_t x77;
+  fiat_p256_mulx_u64(&x76, &x77, x68, UINT32_C(0xffffffff));
+  uint64_t x78;
+  uint64_t x79;
+  fiat_p256_mulx_u64(&x78, &x79, x68, UINT64_C(0xffffffffffffffff));
+  uint64_t x80;
+  fiat_p256_uint1 x81;
+  fiat_p256_addcarryx_u64(&x80, &x81, 0x0, x76, x79);
+  uint64_t x82;
+  fiat_p256_uint1 x83;
+  fiat_p256_addcarryx_u64(&x82, &x83, 0x0, x78, x68);
+  uint64_t x84;
+  fiat_p256_uint1 x85;
+  fiat_p256_addcarryx_u64(&x84, &x85, x83, x80, x70);
+  uint64_t x86;
+  fiat_p256_uint1 x87;
+  fiat_p256_addcarryx_u64(&x86, &x87, x81, 0x0, x77);
+  uint64_t x88;
+  fiat_p256_uint1 x89;
+  fiat_p256_addcarryx_u64(&x88, &x89, x85, x86, x72);
+  uint64_t x90;
+  fiat_p256_uint1 x91;
+  fiat_p256_addcarryx_u64(&x90, &x91, x67, x47, 0x0);
+  uint64_t x92;
+  fiat_p256_uint1 x93;
+  fiat_p256_addcarryx_u64(&x92, &x93, x73, 0x0, x90);
+  uint64_t x94;
+  fiat_p256_uint1 x95;
+  fiat_p256_addcarryx_u64(&x94, &x95, x89, x74, x92);
+  uint64_t x96;
+  fiat_p256_uint1 x97;
+  fiat_p256_addcarryx_u64(&x96, &x97, x95, x75, 0x0);
+  uint64_t x98;
+  fiat_p256_uint1 x99;
+  fiat_p256_subborrowx_u64(&x98, &x99, 0x0, x84, UINT64_C(0xffffffffffffffff));
+  uint64_t x100;
+  fiat_p256_uint1 x101;
+  fiat_p256_subborrowx_u64(&x100, &x101, x99, x88, UINT32_C(0xffffffff));
+  uint64_t x102;
+  fiat_p256_uint1 x103;
+  fiat_p256_subborrowx_u64(&x102, &x103, x101, x94, 0x0);
+  uint64_t x104;
+  fiat_p256_uint1 x105;
+  fiat_p256_subborrowx_u64(&x104, &x105, x103, x96, UINT64_C(0xffffffff00000001));
+  uint64_t x106;
+  fiat_p256_uint1 x107;
+  fiat_p256_subborrowx_u64(&x106, &x107, x105, 0x0, 0x0);
+  uint64_t x108;
+  fiat_p256_cmovznz_u64(&x108, x107, x98, x84);
+  uint64_t x109;
+  fiat_p256_cmovznz_u64(&x109, x107, x100, x88);
+  uint64_t x110;
+  fiat_p256_cmovznz_u64(&x110, x107, x102, x94);
+  uint64_t x111;
+  fiat_p256_cmovznz_u64(&x111, x107, x104, x96);
+  out1[0] = x108;
+  out1[1] = x109;
+  out1[2] = x110;
+  out1[3] = x111;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_nonzero(uint64_t* out1, const uint64_t arg1[4]) {
+  uint64_t x1 = ((arg1[0]) | ((arg1[1]) | ((arg1[2]) | ((arg1[3]) | (uint64_t)0x0))));
+  *out1 = x1;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_selectznz(uint64_t out1[4], fiat_p256_uint1 arg1, const uint64_t arg2[4], const uint64_t arg3[4]) {
+  uint64_t x1;
+  fiat_p256_cmovznz_u64(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint64_t x2;
+  fiat_p256_cmovznz_u64(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint64_t x3;
+  fiat_p256_cmovznz_u64(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint64_t x4;
+  fiat_p256_cmovznz_u64(&x4, arg1, (arg2[3]), (arg3[3]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ */
+static void fiat_p256_to_bytes(uint8_t out1[32], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[3]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[1]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5 = (x4 >> 8);
+  uint8_t x6 = (uint8_t)(x4 & UINT8_C(0xff));
+  uint64_t x7 = (x5 >> 8);
+  uint8_t x8 = (uint8_t)(x5 & UINT8_C(0xff));
+  uint64_t x9 = (x7 >> 8);
+  uint8_t x10 = (uint8_t)(x7 & UINT8_C(0xff));
+  uint64_t x11 = (x9 >> 8);
+  uint8_t x12 = (uint8_t)(x9 & UINT8_C(0xff));
+  uint64_t x13 = (x11 >> 8);
+  uint8_t x14 = (uint8_t)(x11 & UINT8_C(0xff));
+  uint64_t x15 = (x13 >> 8);
+  uint8_t x16 = (uint8_t)(x13 & UINT8_C(0xff));
+  uint8_t x17 = (uint8_t)(x15 >> 8);
+  uint8_t x18 = (uint8_t)(x15 & UINT8_C(0xff));
+  uint8_t x19 = (uint8_t)(x17 & UINT8_C(0xff));
+  uint64_t x20 = (x3 >> 8);
+  uint8_t x21 = (uint8_t)(x3 & UINT8_C(0xff));
+  uint64_t x22 = (x20 >> 8);
+  uint8_t x23 = (uint8_t)(x20 & UINT8_C(0xff));
+  uint64_t x24 = (x22 >> 8);
+  uint8_t x25 = (uint8_t)(x22 & UINT8_C(0xff));
+  uint64_t x26 = (x24 >> 8);
+  uint8_t x27 = (uint8_t)(x24 & UINT8_C(0xff));
+  uint64_t x28 = (x26 >> 8);
+  uint8_t x29 = (uint8_t)(x26 & UINT8_C(0xff));
+  uint64_t x30 = (x28 >> 8);
+  uint8_t x31 = (uint8_t)(x28 & UINT8_C(0xff));
+  uint8_t x32 = (uint8_t)(x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint8_t x34 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint64_t x35 = (x2 >> 8);
+  uint8_t x36 = (uint8_t)(x2 & UINT8_C(0xff));
+  uint64_t x37 = (x35 >> 8);
+  uint8_t x38 = (uint8_t)(x35 & UINT8_C(0xff));
+  uint64_t x39 = (x37 >> 8);
+  uint8_t x40 = (uint8_t)(x37 & UINT8_C(0xff));
+  uint64_t x41 = (x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint64_t x43 = (x41 >> 8);
+  uint8_t x44 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint64_t x45 = (x43 >> 8);
+  uint8_t x46 = (uint8_t)(x43 & UINT8_C(0xff));
+  uint8_t x47 = (uint8_t)(x45 >> 8);
+  uint8_t x48 = (uint8_t)(x45 & UINT8_C(0xff));
+  uint8_t x49 = (uint8_t)(x47 & UINT8_C(0xff));
+  uint64_t x50 = (x1 >> 8);
+  uint8_t x51 = (uint8_t)(x1 & UINT8_C(0xff));
+  uint64_t x52 = (x50 >> 8);
+  uint8_t x53 = (uint8_t)(x50 & UINT8_C(0xff));
+  uint64_t x54 = (x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint64_t x56 = (x54 >> 8);
+  uint8_t x57 = (uint8_t)(x54 & UINT8_C(0xff));
+  uint64_t x58 = (x56 >> 8);
+  uint8_t x59 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint64_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint8_t x62 = (uint8_t)(x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  out1[0] = x6;
+  out1[1] = x8;
+  out1[2] = x10;
+  out1[3] = x12;
+  out1[4] = x14;
+  out1[5] = x16;
+  out1[6] = x18;
+  out1[7] = x19;
+  out1[8] = x21;
+  out1[9] = x23;
+  out1[10] = x25;
+  out1[11] = x27;
+  out1[12] = x29;
+  out1[13] = x31;
+  out1[14] = x33;
+  out1[15] = x34;
+  out1[16] = x36;
+  out1[17] = x38;
+  out1[18] = x40;
+  out1[19] = x42;
+  out1[20] = x44;
+  out1[21] = x46;
+  out1[22] = x48;
+  out1[23] = x49;
+  out1[24] = x51;
+  out1[25] = x53;
+  out1[26] = x55;
+  out1[27] = x57;
+  out1[28] = x59;
+  out1[29] = x61;
+  out1[30] = x63;
+  out1[31] = x62;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_from_bytes(uint64_t out1[4], const uint8_t arg1[32]) {
+  uint64_t x1 = ((uint64_t)(arg1[31]) << 56);
+  uint64_t x2 = ((uint64_t)(arg1[30]) << 48);
+  uint64_t x3 = ((uint64_t)(arg1[29]) << 40);
+  uint64_t x4 = ((uint64_t)(arg1[28]) << 32);
+  uint64_t x5 = ((uint64_t)(arg1[27]) << 24);
+  uint64_t x6 = ((uint64_t)(arg1[26]) << 16);
+  uint64_t x7 = ((uint64_t)(arg1[25]) << 8);
+  uint8_t x8 = (arg1[24]);
+  uint64_t x9 = ((uint64_t)(arg1[23]) << 56);
+  uint64_t x10 = ((uint64_t)(arg1[22]) << 48);
+  uint64_t x11 = ((uint64_t)(arg1[21]) << 40);
+  uint64_t x12 = ((uint64_t)(arg1[20]) << 32);
+  uint64_t x13 = ((uint64_t)(arg1[19]) << 24);
+  uint64_t x14 = ((uint64_t)(arg1[18]) << 16);
+  uint64_t x15 = ((uint64_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint64_t x17 = ((uint64_t)(arg1[15]) << 56);
+  uint64_t x18 = ((uint64_t)(arg1[14]) << 48);
+  uint64_t x19 = ((uint64_t)(arg1[13]) << 40);
+  uint64_t x20 = ((uint64_t)(arg1[12]) << 32);
+  uint64_t x21 = ((uint64_t)(arg1[11]) << 24);
+  uint64_t x22 = ((uint64_t)(arg1[10]) << 16);
+  uint64_t x23 = ((uint64_t)(arg1[9]) << 8);
+  uint8_t x24 = (arg1[8]);
+  uint64_t x25 = ((uint64_t)(arg1[7]) << 56);
+  uint64_t x26 = ((uint64_t)(arg1[6]) << 48);
+  uint64_t x27 = ((uint64_t)(arg1[5]) << 40);
+  uint64_t x28 = ((uint64_t)(arg1[4]) << 32);
+  uint64_t x29 = ((uint64_t)(arg1[3]) << 24);
+  uint64_t x30 = ((uint64_t)(arg1[2]) << 16);
+  uint64_t x31 = ((uint64_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint64_t x33 = (x32 + (x31 + (x30 + (x29 + (x28 + (x27 + (x26 + x25)))))));
+  uint64_t x34 = (x33 & UINT64_C(0xffffffffffffffff));
+  uint64_t x35 = (x8 + (x7 + (x6 + (x5 + (x4 + (x3 + (x2 + x1)))))));
+  uint64_t x36 = (x16 + (x15 + (x14 + (x13 + (x12 + (x11 + (x10 + x9)))))));
+  uint64_t x37 = (x24 + (x23 + (x22 + (x21 + (x20 + (x19 + (x18 + x17)))))));
+  uint64_t x38 = (x37 & UINT64_C(0xffffffffffffffff));
+  uint64_t x39 = (x36 & UINT64_C(0xffffffffffffffff));
+  out1[0] = x34;
+  out1[1] = x38;
+  out1[2] = x39;
+  out1[3] = x35;
+}
+
diff --git a/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h.grpc_back b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h.grpc_back
new file mode 100644
index 0000000..7d97e0a
--- /dev/null
+++ b/ChattingApp 000/Pods/BoringSSL-GRPC/src/third_party/fiat/p256_64.h.grpc_back	
@@ -0,0 +1,1217 @@
+/* Autogenerated */
+/* curve description: p256 */
+/* requested operations: (all) */
+/* m = 0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff (from "2^256 - 2^224 + 2^192 + 2^96 - 1") */
+/* machine_wordsize = 64 (from "64") */
+/*                                                                    */
+/* NOTE: In addition to the bounds specified above each function, all */
+/*   functions synthesized for this Montgomery arithmetic require the */
+/*   input to be strictly less than the prime modulus (m), and also   */
+/*   require the input to be in the unique saturated representation.  */
+/*   All functions also ensure that these two properties are true of  */
+/*   return values.                                                   */
+
+#include <stdint.h>
+typedef unsigned char fiat_p256_uint1;
+typedef signed char fiat_p256_int1;
+typedef signed __int128 fiat_p256_int128;
+typedef unsigned __int128 fiat_p256_uint128;
+
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_addcarryx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_uint128 x1 = ((arg1 + (fiat_p256_uint128)arg2) + arg3);
+  uint64_t x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  fiat_p256_uint1 x3 = (fiat_p256_uint1)(x1 >> 64);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0x1]
+ */
+static void fiat_p256_subborrowx_u64(uint64_t* out1, fiat_p256_uint1* out2, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_int128 x1 = ((arg2 - (fiat_p256_int128)arg1) - arg3);
+  fiat_p256_int1 x2 = (fiat_p256_int1)(x1 >> 64);
+  uint64_t x3 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  *out1 = x3;
+  *out2 = (fiat_p256_uint1)(0x0 - x2);
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0xffffffffffffffff]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ *   out2: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_mulx_u64(uint64_t* out1, uint64_t* out2, uint64_t arg1, uint64_t arg2) {
+  fiat_p256_uint128 x1 = ((fiat_p256_uint128)arg1 * arg2);
+  uint64_t x2 = (uint64_t)(x1 & UINT64_C(0xffffffffffffffff));
+  uint64_t x3 = (uint64_t)(x1 >> 64);
+  *out1 = x2;
+  *out2 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [0x0 ~> 0xffffffffffffffff]
+ *   arg3: [0x0 ~> 0xffffffffffffffff]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_cmovznz_u64(uint64_t* out1, fiat_p256_uint1 arg1, uint64_t arg2, uint64_t arg3) {
+  fiat_p256_uint1 x1 = (!(!arg1));
+  uint64_t x2 = ((fiat_p256_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
+  // Note this line has been patched from the synthesized code to add value
+  // barriers.
+  //
+  // Clang recognizes this pattern as a select. While it usually transforms it
+  // to a cmov, it sometimes further transforms it into a branch, which we do
+  // not want.
+  uint64_t x3 = ((value_barrier_u64(x2) & arg3) | (value_barrier_u64(~x2) & arg2));
+  *out1 = x3;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_mul(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1 = (arg1[1]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[3]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5;
+  uint64_t x6;
+  fiat_p256_mulx_u64(&x5, &x6, x4, (arg2[3]));
+  uint64_t x7;
+  uint64_t x8;
+  fiat_p256_mulx_u64(&x7, &x8, x4, (arg2[2]));
+  uint64_t x9;
+  uint64_t x10;
+  fiat_p256_mulx_u64(&x9, &x10, x4, (arg2[1]));
+  uint64_t x11;
+  uint64_t x12;
+  fiat_p256_mulx_u64(&x11, &x12, x4, (arg2[0]));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x9, x12);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u64(&x15, &x16, x14, x7, x10);
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_addcarryx_u64(&x17, &x18, x16, x5, x8);
+  uint64_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_addcarryx_u64(&x19, &x20, x18, 0x0, x6);
+  uint64_t x21;
+  uint64_t x22;
+  fiat_p256_mulx_u64(&x21, &x22, x11, UINT64_C(0xffffffff00000001));
+  uint64_t x23;
+  uint64_t x24;
+  fiat_p256_mulx_u64(&x23, &x24, x11, UINT32_C(0xffffffff));
+  uint64_t x25;
+  uint64_t x26;
+  fiat_p256_mulx_u64(&x25, &x26, x11, UINT64_C(0xffffffffffffffff));
+  uint64_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u64(&x27, &x28, 0x0, x23, x26);
+  uint64_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u64(&x29, &x30, x28, 0x0, x24);
+  uint64_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u64(&x31, &x32, 0x0, x25, x11);
+  uint64_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u64(&x33, &x34, x32, x27, x13);
+  uint64_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u64(&x35, &x36, x34, x29, x15);
+  uint64_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u64(&x37, &x38, x36, x21, x17);
+  uint64_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u64(&x39, &x40, x38, x22, x19);
+  uint64_t x41;
+  fiat_p256_uint1 x42;
+  fiat_p256_addcarryx_u64(&x41, &x42, x40, 0x0, 0x0);
+  uint64_t x43;
+  uint64_t x44;
+  fiat_p256_mulx_u64(&x43, &x44, x1, (arg2[3]));
+  uint64_t x45;
+  uint64_t x46;
+  fiat_p256_mulx_u64(&x45, &x46, x1, (arg2[2]));
+  uint64_t x47;
+  uint64_t x48;
+  fiat_p256_mulx_u64(&x47, &x48, x1, (arg2[1]));
+  uint64_t x49;
+  uint64_t x50;
+  fiat_p256_mulx_u64(&x49, &x50, x1, (arg2[0]));
+  uint64_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u64(&x51, &x52, 0x0, x47, x50);
+  uint64_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u64(&x53, &x54, x52, x45, x48);
+  uint64_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u64(&x55, &x56, x54, x43, x46);
+  uint64_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u64(&x57, &x58, x56, 0x0, x44);
+  uint64_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u64(&x59, &x60, 0x0, x49, x33);
+  uint64_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u64(&x61, &x62, x60, x51, x35);
+  uint64_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u64(&x63, &x64, x62, x53, x37);
+  uint64_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u64(&x65, &x66, x64, x55, x39);
+  uint64_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u64(&x67, &x68, x66, x57, (fiat_p256_uint1)x41);
+  uint64_t x69;
+  uint64_t x70;
+  fiat_p256_mulx_u64(&x69, &x70, x59, UINT64_C(0xffffffff00000001));
+  uint64_t x71;
+  uint64_t x72;
+  fiat_p256_mulx_u64(&x71, &x72, x59, UINT32_C(0xffffffff));
+  uint64_t x73;
+  uint64_t x74;
+  fiat_p256_mulx_u64(&x73, &x74, x59, UINT64_C(0xffffffffffffffff));
+  uint64_t x75;
+  fiat_p256_uint1 x76;
+  fiat_p256_addcarryx_u64(&x75, &x76, 0x0, x71, x74);
+  uint64_t x77;
+  fiat_p256_uint1 x78;
+  fiat_p256_addcarryx_u64(&x77, &x78, x76, 0x0, x72);
+  uint64_t x79;
+  fiat_p256_uint1 x80;
+  fiat_p256_addcarryx_u64(&x79, &x80, 0x0, x73, x59);
+  uint64_t x81;
+  fiat_p256_uint1 x82;
+  fiat_p256_addcarryx_u64(&x81, &x82, x80, x75, x61);
+  uint64_t x83;
+  fiat_p256_uint1 x84;
+  fiat_p256_addcarryx_u64(&x83, &x84, x82, x77, x63);
+  uint64_t x85;
+  fiat_p256_uint1 x86;
+  fiat_p256_addcarryx_u64(&x85, &x86, x84, x69, x65);
+  uint64_t x87;
+  fiat_p256_uint1 x88;
+  fiat_p256_addcarryx_u64(&x87, &x88, x86, x70, x67);
+  uint64_t x89;
+  fiat_p256_uint1 x90;
+  fiat_p256_addcarryx_u64(&x89, &x90, x88, 0x0, x68);
+  uint64_t x91;
+  uint64_t x92;
+  fiat_p256_mulx_u64(&x91, &x92, x2, (arg2[3]));
+  uint64_t x93;
+  uint64_t x94;
+  fiat_p256_mulx_u64(&x93, &x94, x2, (arg2[2]));
+  uint64_t x95;
+  uint64_t x96;
+  fiat_p256_mulx_u64(&x95, &x96, x2, (arg2[1]));
+  uint64_t x97;
+  uint64_t x98;
+  fiat_p256_mulx_u64(&x97, &x98, x2, (arg2[0]));
+  uint64_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x95, x98);
+  uint64_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u64(&x101, &x102, x100, x93, x96);
+  uint64_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u64(&x103, &x104, x102, x91, x94);
+  uint64_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u64(&x105, &x106, x104, 0x0, x92);
+  uint64_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u64(&x107, &x108, 0x0, x97, x81);
+  uint64_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u64(&x109, &x110, x108, x99, x83);
+  uint64_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u64(&x111, &x112, x110, x101, x85);
+  uint64_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u64(&x113, &x114, x112, x103, x87);
+  uint64_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u64(&x115, &x116, x114, x105, x89);
+  uint64_t x117;
+  uint64_t x118;
+  fiat_p256_mulx_u64(&x117, &x118, x107, UINT64_C(0xffffffff00000001));
+  uint64_t x119;
+  uint64_t x120;
+  fiat_p256_mulx_u64(&x119, &x120, x107, UINT32_C(0xffffffff));
+  uint64_t x121;
+  uint64_t x122;
+  fiat_p256_mulx_u64(&x121, &x122, x107, UINT64_C(0xffffffffffffffff));
+  uint64_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u64(&x123, &x124, 0x0, x119, x122);
+  uint64_t x125;
+  fiat_p256_uint1 x126;
+  fiat_p256_addcarryx_u64(&x125, &x126, x124, 0x0, x120);
+  uint64_t x127;
+  fiat_p256_uint1 x128;
+  fiat_p256_addcarryx_u64(&x127, &x128, 0x0, x121, x107);
+  uint64_t x129;
+  fiat_p256_uint1 x130;
+  fiat_p256_addcarryx_u64(&x129, &x130, x128, x123, x109);
+  uint64_t x131;
+  fiat_p256_uint1 x132;
+  fiat_p256_addcarryx_u64(&x131, &x132, x130, x125, x111);
+  uint64_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u64(&x133, &x134, x132, x117, x113);
+  uint64_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u64(&x135, &x136, x134, x118, x115);
+  uint64_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u64(&x137, &x138, x136, 0x0, x116);
+  uint64_t x139;
+  uint64_t x140;
+  fiat_p256_mulx_u64(&x139, &x140, x3, (arg2[3]));
+  uint64_t x141;
+  uint64_t x142;
+  fiat_p256_mulx_u64(&x141, &x142, x3, (arg2[2]));
+  uint64_t x143;
+  uint64_t x144;
+  fiat_p256_mulx_u64(&x143, &x144, x3, (arg2[1]));
+  uint64_t x145;
+  uint64_t x146;
+  fiat_p256_mulx_u64(&x145, &x146, x3, (arg2[0]));
+  uint64_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u64(&x147, &x148, 0x0, x143, x146);
+  uint64_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u64(&x149, &x150, x148, x141, x144);
+  uint64_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u64(&x151, &x152, x150, x139, x142);
+  uint64_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u64(&x153, &x154, x152, 0x0, x140);
+  uint64_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u64(&x155, &x156, 0x0, x145, x129);
+  uint64_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u64(&x157, &x158, x156, x147, x131);
+  uint64_t x159;
+  fiat_p256_uint1 x160;
+  fiat_p256_addcarryx_u64(&x159, &x160, x158, x149, x133);
+  uint64_t x161;
+  fiat_p256_uint1 x162;
+  fiat_p256_addcarryx_u64(&x161, &x162, x160, x151, x135);
+  uint64_t x163;
+  fiat_p256_uint1 x164;
+  fiat_p256_addcarryx_u64(&x163, &x164, x162, x153, x137);
+  uint64_t x165;
+  uint64_t x166;
+  fiat_p256_mulx_u64(&x165, &x166, x155, UINT64_C(0xffffffff00000001));
+  uint64_t x167;
+  uint64_t x168;
+  fiat_p256_mulx_u64(&x167, &x168, x155, UINT32_C(0xffffffff));
+  uint64_t x169;
+  uint64_t x170;
+  fiat_p256_mulx_u64(&x169, &x170, x155, UINT64_C(0xffffffffffffffff));
+  uint64_t x171;
+  fiat_p256_uint1 x172;
+  fiat_p256_addcarryx_u64(&x171, &x172, 0x0, x167, x170);
+  uint64_t x173;
+  fiat_p256_uint1 x174;
+  fiat_p256_addcarryx_u64(&x173, &x174, x172, 0x0, x168);
+  uint64_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u64(&x175, &x176, 0x0, x169, x155);
+  uint64_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u64(&x177, &x178, x176, x171, x157);
+  uint64_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u64(&x179, &x180, x178, x173, x159);
+  uint64_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u64(&x181, &x182, x180, x165, x161);
+  uint64_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u64(&x183, &x184, x182, x166, x163);
+  uint64_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u64(&x185, &x186, x184, 0x0, x164);
+  uint64_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_subborrowx_u64(&x187, &x188, 0x0, x177, UINT64_C(0xffffffffffffffff));
+  uint64_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_subborrowx_u64(&x189, &x190, x188, x179, UINT32_C(0xffffffff));
+  uint64_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_subborrowx_u64(&x191, &x192, x190, x181, 0x0);
+  uint64_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_subborrowx_u64(&x193, &x194, x192, x183, UINT64_C(0xffffffff00000001));
+  uint64_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_subborrowx_u64(&x195, &x196, x194, x185, 0x0);
+  uint64_t x197;
+  fiat_p256_cmovznz_u64(&x197, x196, x187, x177);
+  uint64_t x198;
+  fiat_p256_cmovznz_u64(&x198, x196, x189, x179);
+  uint64_t x199;
+  fiat_p256_cmovznz_u64(&x199, x196, x191, x181);
+  uint64_t x200;
+  fiat_p256_cmovznz_u64(&x200, x196, x193, x183);
+  out1[0] = x197;
+  out1[1] = x198;
+  out1[2] = x199;
+  out1[3] = x200;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_square(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[1]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[3]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5;
+  uint64_t x6;
+  fiat_p256_mulx_u64(&x5, &x6, x4, (arg1[3]));
+  uint64_t x7;
+  uint64_t x8;
+  fiat_p256_mulx_u64(&x7, &x8, x4, (arg1[2]));
+  uint64_t x9;
+  uint64_t x10;
+  fiat_p256_mulx_u64(&x9, &x10, x4, (arg1[1]));
+  uint64_t x11;
+  uint64_t x12;
+  fiat_p256_mulx_u64(&x11, &x12, x4, (arg1[0]));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_addcarryx_u64(&x13, &x14, 0x0, x9, x12);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_addcarryx_u64(&x15, &x16, x14, x7, x10);
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_addcarryx_u64(&x17, &x18, x16, x5, x8);
+  uint64_t x19;
+  fiat_p256_uint1 x20;
+  fiat_p256_addcarryx_u64(&x19, &x20, x18, 0x0, x6);
+  uint64_t x21;
+  uint64_t x22;
+  fiat_p256_mulx_u64(&x21, &x22, x11, UINT64_C(0xffffffff00000001));
+  uint64_t x23;
+  uint64_t x24;
+  fiat_p256_mulx_u64(&x23, &x24, x11, UINT32_C(0xffffffff));
+  uint64_t x25;
+  uint64_t x26;
+  fiat_p256_mulx_u64(&x25, &x26, x11, UINT64_C(0xffffffffffffffff));
+  uint64_t x27;
+  fiat_p256_uint1 x28;
+  fiat_p256_addcarryx_u64(&x27, &x28, 0x0, x23, x26);
+  uint64_t x29;
+  fiat_p256_uint1 x30;
+  fiat_p256_addcarryx_u64(&x29, &x30, x28, 0x0, x24);
+  uint64_t x31;
+  fiat_p256_uint1 x32;
+  fiat_p256_addcarryx_u64(&x31, &x32, 0x0, x25, x11);
+  uint64_t x33;
+  fiat_p256_uint1 x34;
+  fiat_p256_addcarryx_u64(&x33, &x34, x32, x27, x13);
+  uint64_t x35;
+  fiat_p256_uint1 x36;
+  fiat_p256_addcarryx_u64(&x35, &x36, x34, x29, x15);
+  uint64_t x37;
+  fiat_p256_uint1 x38;
+  fiat_p256_addcarryx_u64(&x37, &x38, x36, x21, x17);
+  uint64_t x39;
+  fiat_p256_uint1 x40;
+  fiat_p256_addcarryx_u64(&x39, &x40, x38, x22, x19);
+  uint64_t x41;
+  fiat_p256_uint1 x42;
+  fiat_p256_addcarryx_u64(&x41, &x42, x40, 0x0, 0x0);
+  uint64_t x43;
+  uint64_t x44;
+  fiat_p256_mulx_u64(&x43, &x44, x1, (arg1[3]));
+  uint64_t x45;
+  uint64_t x46;
+  fiat_p256_mulx_u64(&x45, &x46, x1, (arg1[2]));
+  uint64_t x47;
+  uint64_t x48;
+  fiat_p256_mulx_u64(&x47, &x48, x1, (arg1[1]));
+  uint64_t x49;
+  uint64_t x50;
+  fiat_p256_mulx_u64(&x49, &x50, x1, (arg1[0]));
+  uint64_t x51;
+  fiat_p256_uint1 x52;
+  fiat_p256_addcarryx_u64(&x51, &x52, 0x0, x47, x50);
+  uint64_t x53;
+  fiat_p256_uint1 x54;
+  fiat_p256_addcarryx_u64(&x53, &x54, x52, x45, x48);
+  uint64_t x55;
+  fiat_p256_uint1 x56;
+  fiat_p256_addcarryx_u64(&x55, &x56, x54, x43, x46);
+  uint64_t x57;
+  fiat_p256_uint1 x58;
+  fiat_p256_addcarryx_u64(&x57, &x58, x56, 0x0, x44);
+  uint64_t x59;
+  fiat_p256_uint1 x60;
+  fiat_p256_addcarryx_u64(&x59, &x60, 0x0, x49, x33);
+  uint64_t x61;
+  fiat_p256_uint1 x62;
+  fiat_p256_addcarryx_u64(&x61, &x62, x60, x51, x35);
+  uint64_t x63;
+  fiat_p256_uint1 x64;
+  fiat_p256_addcarryx_u64(&x63, &x64, x62, x53, x37);
+  uint64_t x65;
+  fiat_p256_uint1 x66;
+  fiat_p256_addcarryx_u64(&x65, &x66, x64, x55, x39);
+  uint64_t x67;
+  fiat_p256_uint1 x68;
+  fiat_p256_addcarryx_u64(&x67, &x68, x66, x57, (fiat_p256_uint1)x41);
+  uint64_t x69;
+  uint64_t x70;
+  fiat_p256_mulx_u64(&x69, &x70, x59, UINT64_C(0xffffffff00000001));
+  uint64_t x71;
+  uint64_t x72;
+  fiat_p256_mulx_u64(&x71, &x72, x59, UINT32_C(0xffffffff));
+  uint64_t x73;
+  uint64_t x74;
+  fiat_p256_mulx_u64(&x73, &x74, x59, UINT64_C(0xffffffffffffffff));
+  uint64_t x75;
+  fiat_p256_uint1 x76;
+  fiat_p256_addcarryx_u64(&x75, &x76, 0x0, x71, x74);
+  uint64_t x77;
+  fiat_p256_uint1 x78;
+  fiat_p256_addcarryx_u64(&x77, &x78, x76, 0x0, x72);
+  uint64_t x79;
+  fiat_p256_uint1 x80;
+  fiat_p256_addcarryx_u64(&x79, &x80, 0x0, x73, x59);
+  uint64_t x81;
+  fiat_p256_uint1 x82;
+  fiat_p256_addcarryx_u64(&x81, &x82, x80, x75, x61);
+  uint64_t x83;
+  fiat_p256_uint1 x84;
+  fiat_p256_addcarryx_u64(&x83, &x84, x82, x77, x63);
+  uint64_t x85;
+  fiat_p256_uint1 x86;
+  fiat_p256_addcarryx_u64(&x85, &x86, x84, x69, x65);
+  uint64_t x87;
+  fiat_p256_uint1 x88;
+  fiat_p256_addcarryx_u64(&x87, &x88, x86, x70, x67);
+  uint64_t x89;
+  fiat_p256_uint1 x90;
+  fiat_p256_addcarryx_u64(&x89, &x90, x88, 0x0, x68);
+  uint64_t x91;
+  uint64_t x92;
+  fiat_p256_mulx_u64(&x91, &x92, x2, (arg1[3]));
+  uint64_t x93;
+  uint64_t x94;
+  fiat_p256_mulx_u64(&x93, &x94, x2, (arg1[2]));
+  uint64_t x95;
+  uint64_t x96;
+  fiat_p256_mulx_u64(&x95, &x96, x2, (arg1[1]));
+  uint64_t x97;
+  uint64_t x98;
+  fiat_p256_mulx_u64(&x97, &x98, x2, (arg1[0]));
+  uint64_t x99;
+  fiat_p256_uint1 x100;
+  fiat_p256_addcarryx_u64(&x99, &x100, 0x0, x95, x98);
+  uint64_t x101;
+  fiat_p256_uint1 x102;
+  fiat_p256_addcarryx_u64(&x101, &x102, x100, x93, x96);
+  uint64_t x103;
+  fiat_p256_uint1 x104;
+  fiat_p256_addcarryx_u64(&x103, &x104, x102, x91, x94);
+  uint64_t x105;
+  fiat_p256_uint1 x106;
+  fiat_p256_addcarryx_u64(&x105, &x106, x104, 0x0, x92);
+  uint64_t x107;
+  fiat_p256_uint1 x108;
+  fiat_p256_addcarryx_u64(&x107, &x108, 0x0, x97, x81);
+  uint64_t x109;
+  fiat_p256_uint1 x110;
+  fiat_p256_addcarryx_u64(&x109, &x110, x108, x99, x83);
+  uint64_t x111;
+  fiat_p256_uint1 x112;
+  fiat_p256_addcarryx_u64(&x111, &x112, x110, x101, x85);
+  uint64_t x113;
+  fiat_p256_uint1 x114;
+  fiat_p256_addcarryx_u64(&x113, &x114, x112, x103, x87);
+  uint64_t x115;
+  fiat_p256_uint1 x116;
+  fiat_p256_addcarryx_u64(&x115, &x116, x114, x105, x89);
+  uint64_t x117;
+  uint64_t x118;
+  fiat_p256_mulx_u64(&x117, &x118, x107, UINT64_C(0xffffffff00000001));
+  uint64_t x119;
+  uint64_t x120;
+  fiat_p256_mulx_u64(&x119, &x120, x107, UINT32_C(0xffffffff));
+  uint64_t x121;
+  uint64_t x122;
+  fiat_p256_mulx_u64(&x121, &x122, x107, UINT64_C(0xffffffffffffffff));
+  uint64_t x123;
+  fiat_p256_uint1 x124;
+  fiat_p256_addcarryx_u64(&x123, &x124, 0x0, x119, x122);
+  uint64_t x125;
+  fiat_p256_uint1 x126;
+  fiat_p256_addcarryx_u64(&x125, &x126, x124, 0x0, x120);
+  uint64_t x127;
+  fiat_p256_uint1 x128;
+  fiat_p256_addcarryx_u64(&x127, &x128, 0x0, x121, x107);
+  uint64_t x129;
+  fiat_p256_uint1 x130;
+  fiat_p256_addcarryx_u64(&x129, &x130, x128, x123, x109);
+  uint64_t x131;
+  fiat_p256_uint1 x132;
+  fiat_p256_addcarryx_u64(&x131, &x132, x130, x125, x111);
+  uint64_t x133;
+  fiat_p256_uint1 x134;
+  fiat_p256_addcarryx_u64(&x133, &x134, x132, x117, x113);
+  uint64_t x135;
+  fiat_p256_uint1 x136;
+  fiat_p256_addcarryx_u64(&x135, &x136, x134, x118, x115);
+  uint64_t x137;
+  fiat_p256_uint1 x138;
+  fiat_p256_addcarryx_u64(&x137, &x138, x136, 0x0, x116);
+  uint64_t x139;
+  uint64_t x140;
+  fiat_p256_mulx_u64(&x139, &x140, x3, (arg1[3]));
+  uint64_t x141;
+  uint64_t x142;
+  fiat_p256_mulx_u64(&x141, &x142, x3, (arg1[2]));
+  uint64_t x143;
+  uint64_t x144;
+  fiat_p256_mulx_u64(&x143, &x144, x3, (arg1[1]));
+  uint64_t x145;
+  uint64_t x146;
+  fiat_p256_mulx_u64(&x145, &x146, x3, (arg1[0]));
+  uint64_t x147;
+  fiat_p256_uint1 x148;
+  fiat_p256_addcarryx_u64(&x147, &x148, 0x0, x143, x146);
+  uint64_t x149;
+  fiat_p256_uint1 x150;
+  fiat_p256_addcarryx_u64(&x149, &x150, x148, x141, x144);
+  uint64_t x151;
+  fiat_p256_uint1 x152;
+  fiat_p256_addcarryx_u64(&x151, &x152, x150, x139, x142);
+  uint64_t x153;
+  fiat_p256_uint1 x154;
+  fiat_p256_addcarryx_u64(&x153, &x154, x152, 0x0, x140);
+  uint64_t x155;
+  fiat_p256_uint1 x156;
+  fiat_p256_addcarryx_u64(&x155, &x156, 0x0, x145, x129);
+  uint64_t x157;
+  fiat_p256_uint1 x158;
+  fiat_p256_addcarryx_u64(&x157, &x158, x156, x147, x131);
+  uint64_t x159;
+  fiat_p256_uint1 x160;
+  fiat_p256_addcarryx_u64(&x159, &x160, x158, x149, x133);
+  uint64_t x161;
+  fiat_p256_uint1 x162;
+  fiat_p256_addcarryx_u64(&x161, &x162, x160, x151, x135);
+  uint64_t x163;
+  fiat_p256_uint1 x164;
+  fiat_p256_addcarryx_u64(&x163, &x164, x162, x153, x137);
+  uint64_t x165;
+  uint64_t x166;
+  fiat_p256_mulx_u64(&x165, &x166, x155, UINT64_C(0xffffffff00000001));
+  uint64_t x167;
+  uint64_t x168;
+  fiat_p256_mulx_u64(&x167, &x168, x155, UINT32_C(0xffffffff));
+  uint64_t x169;
+  uint64_t x170;
+  fiat_p256_mulx_u64(&x169, &x170, x155, UINT64_C(0xffffffffffffffff));
+  uint64_t x171;
+  fiat_p256_uint1 x172;
+  fiat_p256_addcarryx_u64(&x171, &x172, 0x0, x167, x170);
+  uint64_t x173;
+  fiat_p256_uint1 x174;
+  fiat_p256_addcarryx_u64(&x173, &x174, x172, 0x0, x168);
+  uint64_t x175;
+  fiat_p256_uint1 x176;
+  fiat_p256_addcarryx_u64(&x175, &x176, 0x0, x169, x155);
+  uint64_t x177;
+  fiat_p256_uint1 x178;
+  fiat_p256_addcarryx_u64(&x177, &x178, x176, x171, x157);
+  uint64_t x179;
+  fiat_p256_uint1 x180;
+  fiat_p256_addcarryx_u64(&x179, &x180, x178, x173, x159);
+  uint64_t x181;
+  fiat_p256_uint1 x182;
+  fiat_p256_addcarryx_u64(&x181, &x182, x180, x165, x161);
+  uint64_t x183;
+  fiat_p256_uint1 x184;
+  fiat_p256_addcarryx_u64(&x183, &x184, x182, x166, x163);
+  uint64_t x185;
+  fiat_p256_uint1 x186;
+  fiat_p256_addcarryx_u64(&x185, &x186, x184, 0x0, x164);
+  uint64_t x187;
+  fiat_p256_uint1 x188;
+  fiat_p256_subborrowx_u64(&x187, &x188, 0x0, x177, UINT64_C(0xffffffffffffffff));
+  uint64_t x189;
+  fiat_p256_uint1 x190;
+  fiat_p256_subborrowx_u64(&x189, &x190, x188, x179, UINT32_C(0xffffffff));
+  uint64_t x191;
+  fiat_p256_uint1 x192;
+  fiat_p256_subborrowx_u64(&x191, &x192, x190, x181, 0x0);
+  uint64_t x193;
+  fiat_p256_uint1 x194;
+  fiat_p256_subborrowx_u64(&x193, &x194, x192, x183, UINT64_C(0xffffffff00000001));
+  uint64_t x195;
+  fiat_p256_uint1 x196;
+  fiat_p256_subborrowx_u64(&x195, &x196, x194, x185, 0x0);
+  uint64_t x197;
+  fiat_p256_cmovznz_u64(&x197, x196, x187, x177);
+  uint64_t x198;
+  fiat_p256_cmovznz_u64(&x198, x196, x189, x179);
+  uint64_t x199;
+  fiat_p256_cmovznz_u64(&x199, x196, x191, x181);
+  uint64_t x200;
+  fiat_p256_cmovznz_u64(&x200, x196, x193, x183);
+  out1[0] = x197;
+  out1[1] = x198;
+  out1[2] = x199;
+  out1[3] = x200;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_add(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_addcarryx_u64(&x1, &x2, 0x0, (arg2[0]), (arg1[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_addcarryx_u64(&x3, &x4, x2, (arg2[1]), (arg1[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_addcarryx_u64(&x5, &x6, x4, (arg2[2]), (arg1[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_addcarryx_u64(&x7, &x8, x6, (arg2[3]), (arg1[3]));
+  uint64_t x9;
+  fiat_p256_uint1 x10;
+  fiat_p256_subborrowx_u64(&x9, &x10, 0x0, x1, UINT64_C(0xffffffffffffffff));
+  uint64_t x11;
+  fiat_p256_uint1 x12;
+  fiat_p256_subborrowx_u64(&x11, &x12, x10, x3, UINT32_C(0xffffffff));
+  uint64_t x13;
+  fiat_p256_uint1 x14;
+  fiat_p256_subborrowx_u64(&x13, &x14, x12, x5, 0x0);
+  uint64_t x15;
+  fiat_p256_uint1 x16;
+  fiat_p256_subborrowx_u64(&x15, &x16, x14, x7, UINT64_C(0xffffffff00000001));
+  uint64_t x17;
+  fiat_p256_uint1 x18;
+  fiat_p256_subborrowx_u64(&x17, &x18, x16, x8, 0x0);
+  uint64_t x19;
+  fiat_p256_cmovznz_u64(&x19, x18, x9, x1);
+  uint64_t x20;
+  fiat_p256_cmovznz_u64(&x20, x18, x11, x3);
+  uint64_t x21;
+  fiat_p256_cmovznz_u64(&x21, x18, x13, x5);
+  uint64_t x22;
+  fiat_p256_cmovznz_u64(&x22, x18, x15, x7);
+  out1[0] = x19;
+  out1[1] = x20;
+  out1[2] = x21;
+  out1[3] = x22;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_sub(uint64_t out1[4], const uint64_t arg1[4], const uint64_t arg2[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u64(&x1, &x2, 0x0, (arg1[0]), (arg2[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u64(&x3, &x4, x2, (arg1[1]), (arg2[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u64(&x5, &x6, x4, (arg1[2]), (arg2[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u64(&x7, &x8, x6, (arg1[3]), (arg2[3]));
+  uint64_t x9;
+  fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, (x9 & UINT64_C(0xffffffffffffffff)), x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, (x9 & UINT32_C(0xffffffff)), x3);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, x13, 0x0, x5);
+  uint64_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u64(&x16, &x17, x15, (x9 & UINT64_C(0xffffffff00000001)), x7);
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x16;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_opp(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1;
+  fiat_p256_uint1 x2;
+  fiat_p256_subborrowx_u64(&x1, &x2, 0x0, 0x0, (arg1[0]));
+  uint64_t x3;
+  fiat_p256_uint1 x4;
+  fiat_p256_subborrowx_u64(&x3, &x4, x2, 0x0, (arg1[1]));
+  uint64_t x5;
+  fiat_p256_uint1 x6;
+  fiat_p256_subborrowx_u64(&x5, &x6, x4, 0x0, (arg1[2]));
+  uint64_t x7;
+  fiat_p256_uint1 x8;
+  fiat_p256_subborrowx_u64(&x7, &x8, x6, 0x0, (arg1[3]));
+  uint64_t x9;
+  fiat_p256_cmovznz_u64(&x9, x8, 0x0, UINT64_C(0xffffffffffffffff));
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, (x9 & UINT64_C(0xffffffffffffffff)), x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, (x9 & UINT32_C(0xffffffff)), x3);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, x13, 0x0, x5);
+  uint64_t x16;
+  fiat_p256_uint1 x17;
+  fiat_p256_addcarryx_u64(&x16, &x17, x15, (x9 & UINT64_C(0xffffffff00000001)), x7);
+  out1[0] = x10;
+  out1[1] = x12;
+  out1[2] = x14;
+  out1[3] = x16;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_from_montgomery(uint64_t out1[4], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[0]);
+  uint64_t x2;
+  uint64_t x3;
+  fiat_p256_mulx_u64(&x2, &x3, x1, UINT64_C(0xffffffff00000001));
+  uint64_t x4;
+  uint64_t x5;
+  fiat_p256_mulx_u64(&x4, &x5, x1, UINT32_C(0xffffffff));
+  uint64_t x6;
+  uint64_t x7;
+  fiat_p256_mulx_u64(&x6, &x7, x1, UINT64_C(0xffffffffffffffff));
+  uint64_t x8;
+  fiat_p256_uint1 x9;
+  fiat_p256_addcarryx_u64(&x8, &x9, 0x0, x4, x7);
+  uint64_t x10;
+  fiat_p256_uint1 x11;
+  fiat_p256_addcarryx_u64(&x10, &x11, 0x0, x6, x1);
+  uint64_t x12;
+  fiat_p256_uint1 x13;
+  fiat_p256_addcarryx_u64(&x12, &x13, x11, x8, 0x0);
+  uint64_t x14;
+  fiat_p256_uint1 x15;
+  fiat_p256_addcarryx_u64(&x14, &x15, 0x0, (arg1[1]), x12);
+  uint64_t x16;
+  uint64_t x17;
+  fiat_p256_mulx_u64(&x16, &x17, x14, UINT64_C(0xffffffff00000001));
+  uint64_t x18;
+  uint64_t x19;
+  fiat_p256_mulx_u64(&x18, &x19, x14, UINT32_C(0xffffffff));
+  uint64_t x20;
+  uint64_t x21;
+  fiat_p256_mulx_u64(&x20, &x21, x14, UINT64_C(0xffffffffffffffff));
+  uint64_t x22;
+  fiat_p256_uint1 x23;
+  fiat_p256_addcarryx_u64(&x22, &x23, 0x0, x18, x21);
+  uint64_t x24;
+  fiat_p256_uint1 x25;
+  fiat_p256_addcarryx_u64(&x24, &x25, x9, 0x0, x5);
+  uint64_t x26;
+  fiat_p256_uint1 x27;
+  fiat_p256_addcarryx_u64(&x26, &x27, x13, x24, 0x0);
+  uint64_t x28;
+  fiat_p256_uint1 x29;
+  fiat_p256_addcarryx_u64(&x28, &x29, x15, 0x0, x26);
+  uint64_t x30;
+  fiat_p256_uint1 x31;
+  fiat_p256_addcarryx_u64(&x30, &x31, 0x0, x20, x14);
+  uint64_t x32;
+  fiat_p256_uint1 x33;
+  fiat_p256_addcarryx_u64(&x32, &x33, x31, x22, x28);
+  uint64_t x34;
+  fiat_p256_uint1 x35;
+  fiat_p256_addcarryx_u64(&x34, &x35, x23, 0x0, x19);
+  uint64_t x36;
+  fiat_p256_uint1 x37;
+  fiat_p256_addcarryx_u64(&x36, &x37, x33, x34, x2);
+  uint64_t x38;
+  fiat_p256_uint1 x39;
+  fiat_p256_addcarryx_u64(&x38, &x39, x37, x16, x3);
+  uint64_t x40;
+  fiat_p256_uint1 x41;
+  fiat_p256_addcarryx_u64(&x40, &x41, 0x0, (arg1[2]), x32);
+  uint64_t x42;
+  fiat_p256_uint1 x43;
+  fiat_p256_addcarryx_u64(&x42, &x43, x41, 0x0, x36);
+  uint64_t x44;
+  fiat_p256_uint1 x45;
+  fiat_p256_addcarryx_u64(&x44, &x45, x43, 0x0, x38);
+  uint64_t x46;
+  uint64_t x47;
+  fiat_p256_mulx_u64(&x46, &x47, x40, UINT64_C(0xffffffff00000001));
+  uint64_t x48;
+  uint64_t x49;
+  fiat_p256_mulx_u64(&x48, &x49, x40, UINT32_C(0xffffffff));
+  uint64_t x50;
+  uint64_t x51;
+  fiat_p256_mulx_u64(&x50, &x51, x40, UINT64_C(0xffffffffffffffff));
+  uint64_t x52;
+  fiat_p256_uint1 x53;
+  fiat_p256_addcarryx_u64(&x52, &x53, 0x0, x48, x51);
+  uint64_t x54;
+  fiat_p256_uint1 x55;
+  fiat_p256_addcarryx_u64(&x54, &x55, 0x0, x50, x40);
+  uint64_t x56;
+  fiat_p256_uint1 x57;
+  fiat_p256_addcarryx_u64(&x56, &x57, x55, x52, x42);
+  uint64_t x58;
+  fiat_p256_uint1 x59;
+  fiat_p256_addcarryx_u64(&x58, &x59, x53, 0x0, x49);
+  uint64_t x60;
+  fiat_p256_uint1 x61;
+  fiat_p256_addcarryx_u64(&x60, &x61, x57, x58, x44);
+  uint64_t x62;
+  fiat_p256_uint1 x63;
+  fiat_p256_addcarryx_u64(&x62, &x63, x39, x17, 0x0);
+  uint64_t x64;
+  fiat_p256_uint1 x65;
+  fiat_p256_addcarryx_u64(&x64, &x65, x45, 0x0, x62);
+  uint64_t x66;
+  fiat_p256_uint1 x67;
+  fiat_p256_addcarryx_u64(&x66, &x67, x61, x46, x64);
+  uint64_t x68;
+  fiat_p256_uint1 x69;
+  fiat_p256_addcarryx_u64(&x68, &x69, 0x0, (arg1[3]), x56);
+  uint64_t x70;
+  fiat_p256_uint1 x71;
+  fiat_p256_addcarryx_u64(&x70, &x71, x69, 0x0, x60);
+  uint64_t x72;
+  fiat_p256_uint1 x73;
+  fiat_p256_addcarryx_u64(&x72, &x73, x71, 0x0, x66);
+  uint64_t x74;
+  uint64_t x75;
+  fiat_p256_mulx_u64(&x74, &x75, x68, UINT64_C(0xffffffff00000001));
+  uint64_t x76;
+  uint64_t x77;
+  fiat_p256_mulx_u64(&x76, &x77, x68, UINT32_C(0xffffffff));
+  uint64_t x78;
+  uint64_t x79;
+  fiat_p256_mulx_u64(&x78, &x79, x68, UINT64_C(0xffffffffffffffff));
+  uint64_t x80;
+  fiat_p256_uint1 x81;
+  fiat_p256_addcarryx_u64(&x80, &x81, 0x0, x76, x79);
+  uint64_t x82;
+  fiat_p256_uint1 x83;
+  fiat_p256_addcarryx_u64(&x82, &x83, 0x0, x78, x68);
+  uint64_t x84;
+  fiat_p256_uint1 x85;
+  fiat_p256_addcarryx_u64(&x84, &x85, x83, x80, x70);
+  uint64_t x86;
+  fiat_p256_uint1 x87;
+  fiat_p256_addcarryx_u64(&x86, &x87, x81, 0x0, x77);
+  uint64_t x88;
+  fiat_p256_uint1 x89;
+  fiat_p256_addcarryx_u64(&x88, &x89, x85, x86, x72);
+  uint64_t x90;
+  fiat_p256_uint1 x91;
+  fiat_p256_addcarryx_u64(&x90, &x91, x67, x47, 0x0);
+  uint64_t x92;
+  fiat_p256_uint1 x93;
+  fiat_p256_addcarryx_u64(&x92, &x93, x73, 0x0, x90);
+  uint64_t x94;
+  fiat_p256_uint1 x95;
+  fiat_p256_addcarryx_u64(&x94, &x95, x89, x74, x92);
+  uint64_t x96;
+  fiat_p256_uint1 x97;
+  fiat_p256_addcarryx_u64(&x96, &x97, x95, x75, 0x0);
+  uint64_t x98;
+  fiat_p256_uint1 x99;
+  fiat_p256_subborrowx_u64(&x98, &x99, 0x0, x84, UINT64_C(0xffffffffffffffff));
+  uint64_t x100;
+  fiat_p256_uint1 x101;
+  fiat_p256_subborrowx_u64(&x100, &x101, x99, x88, UINT32_C(0xffffffff));
+  uint64_t x102;
+  fiat_p256_uint1 x103;
+  fiat_p256_subborrowx_u64(&x102, &x103, x101, x94, 0x0);
+  uint64_t x104;
+  fiat_p256_uint1 x105;
+  fiat_p256_subborrowx_u64(&x104, &x105, x103, x96, UINT64_C(0xffffffff00000001));
+  uint64_t x106;
+  fiat_p256_uint1 x107;
+  fiat_p256_subborrowx_u64(&x106, &x107, x105, 0x0, 0x0);
+  uint64_t x108;
+  fiat_p256_cmovznz_u64(&x108, x107, x98, x84);
+  uint64_t x109;
+  fiat_p256_cmovznz_u64(&x109, x107, x100, x88);
+  uint64_t x110;
+  fiat_p256_cmovznz_u64(&x110, x107, x102, x94);
+  uint64_t x111;
+  fiat_p256_cmovznz_u64(&x111, x107, x104, x96);
+  out1[0] = x108;
+  out1[1] = x109;
+  out1[2] = x110;
+  out1[3] = x111;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [0x0 ~> 0xffffffffffffffff]
+ */
+static void fiat_p256_nonzero(uint64_t* out1, const uint64_t arg1[4]) {
+  uint64_t x1 = ((arg1[0]) | ((arg1[1]) | ((arg1[2]) | ((arg1[3]) | (uint64_t)0x0))));
+  *out1 = x1;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [0x0 ~> 0x1]
+ *   arg2: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ *   arg3: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_selectznz(uint64_t out1[4], fiat_p256_uint1 arg1, const uint64_t arg2[4], const uint64_t arg3[4]) {
+  uint64_t x1;
+  fiat_p256_cmovznz_u64(&x1, arg1, (arg2[0]), (arg3[0]));
+  uint64_t x2;
+  fiat_p256_cmovznz_u64(&x2, arg1, (arg2[1]), (arg3[1]));
+  uint64_t x3;
+  fiat_p256_cmovznz_u64(&x3, arg1, (arg2[2]), (arg3[2]));
+  uint64_t x4;
+  fiat_p256_cmovznz_u64(&x4, arg1, (arg2[3]), (arg3[3]));
+  out1[0] = x1;
+  out1[1] = x2;
+  out1[2] = x3;
+  out1[3] = x4;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ */
+static void fiat_p256_to_bytes(uint8_t out1[32], const uint64_t arg1[4]) {
+  uint64_t x1 = (arg1[3]);
+  uint64_t x2 = (arg1[2]);
+  uint64_t x3 = (arg1[1]);
+  uint64_t x4 = (arg1[0]);
+  uint64_t x5 = (x4 >> 8);
+  uint8_t x6 = (uint8_t)(x4 & UINT8_C(0xff));
+  uint64_t x7 = (x5 >> 8);
+  uint8_t x8 = (uint8_t)(x5 & UINT8_C(0xff));
+  uint64_t x9 = (x7 >> 8);
+  uint8_t x10 = (uint8_t)(x7 & UINT8_C(0xff));
+  uint64_t x11 = (x9 >> 8);
+  uint8_t x12 = (uint8_t)(x9 & UINT8_C(0xff));
+  uint64_t x13 = (x11 >> 8);
+  uint8_t x14 = (uint8_t)(x11 & UINT8_C(0xff));
+  uint64_t x15 = (x13 >> 8);
+  uint8_t x16 = (uint8_t)(x13 & UINT8_C(0xff));
+  uint8_t x17 = (uint8_t)(x15 >> 8);
+  uint8_t x18 = (uint8_t)(x15 & UINT8_C(0xff));
+  uint8_t x19 = (uint8_t)(x17 & UINT8_C(0xff));
+  uint64_t x20 = (x3 >> 8);
+  uint8_t x21 = (uint8_t)(x3 & UINT8_C(0xff));
+  uint64_t x22 = (x20 >> 8);
+  uint8_t x23 = (uint8_t)(x20 & UINT8_C(0xff));
+  uint64_t x24 = (x22 >> 8);
+  uint8_t x25 = (uint8_t)(x22 & UINT8_C(0xff));
+  uint64_t x26 = (x24 >> 8);
+  uint8_t x27 = (uint8_t)(x24 & UINT8_C(0xff));
+  uint64_t x28 = (x26 >> 8);
+  uint8_t x29 = (uint8_t)(x26 & UINT8_C(0xff));
+  uint64_t x30 = (x28 >> 8);
+  uint8_t x31 = (uint8_t)(x28 & UINT8_C(0xff));
+  uint8_t x32 = (uint8_t)(x30 >> 8);
+  uint8_t x33 = (uint8_t)(x30 & UINT8_C(0xff));
+  uint8_t x34 = (uint8_t)(x32 & UINT8_C(0xff));
+  uint64_t x35 = (x2 >> 8);
+  uint8_t x36 = (uint8_t)(x2 & UINT8_C(0xff));
+  uint64_t x37 = (x35 >> 8);
+  uint8_t x38 = (uint8_t)(x35 & UINT8_C(0xff));
+  uint64_t x39 = (x37 >> 8);
+  uint8_t x40 = (uint8_t)(x37 & UINT8_C(0xff));
+  uint64_t x41 = (x39 >> 8);
+  uint8_t x42 = (uint8_t)(x39 & UINT8_C(0xff));
+  uint64_t x43 = (x41 >> 8);
+  uint8_t x44 = (uint8_t)(x41 & UINT8_C(0xff));
+  uint64_t x45 = (x43 >> 8);
+  uint8_t x46 = (uint8_t)(x43 & UINT8_C(0xff));
+  uint8_t x47 = (uint8_t)(x45 >> 8);
+  uint8_t x48 = (uint8_t)(x45 & UINT8_C(0xff));
+  uint8_t x49 = (uint8_t)(x47 & UINT8_C(0xff));
+  uint64_t x50 = (x1 >> 8);
+  uint8_t x51 = (uint8_t)(x1 & UINT8_C(0xff));
+  uint64_t x52 = (x50 >> 8);
+  uint8_t x53 = (uint8_t)(x50 & UINT8_C(0xff));
+  uint64_t x54 = (x52 >> 8);
+  uint8_t x55 = (uint8_t)(x52 & UINT8_C(0xff));
+  uint64_t x56 = (x54 >> 8);
+  uint8_t x57 = (uint8_t)(x54 & UINT8_C(0xff));
+  uint64_t x58 = (x56 >> 8);
+  uint8_t x59 = (uint8_t)(x56 & UINT8_C(0xff));
+  uint64_t x60 = (x58 >> 8);
+  uint8_t x61 = (uint8_t)(x58 & UINT8_C(0xff));
+  uint8_t x62 = (uint8_t)(x60 >> 8);
+  uint8_t x63 = (uint8_t)(x60 & UINT8_C(0xff));
+  out1[0] = x6;
+  out1[1] = x8;
+  out1[2] = x10;
+  out1[3] = x12;
+  out1[4] = x14;
+  out1[5] = x16;
+  out1[6] = x18;
+  out1[7] = x19;
+  out1[8] = x21;
+  out1[9] = x23;
+  out1[10] = x25;
+  out1[11] = x27;
+  out1[12] = x29;
+  out1[13] = x31;
+  out1[14] = x33;
+  out1[15] = x34;
+  out1[16] = x36;
+  out1[17] = x38;
+  out1[18] = x40;
+  out1[19] = x42;
+  out1[20] = x44;
+  out1[21] = x46;
+  out1[22] = x48;
+  out1[23] = x49;
+  out1[24] = x51;
+  out1[25] = x53;
+  out1[26] = x55;
+  out1[27] = x57;
+  out1[28] = x59;
+  out1[29] = x61;
+  out1[30] = x63;
+  out1[31] = x62;
+}
+
+/*
+ * Input Bounds:
+ *   arg1: [[0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff], [0x0 ~> 0xff]]
+ * Output Bounds:
+ *   out1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]]
+ */
+static void fiat_p256_from_bytes(uint64_t out1[4], const uint8_t arg1[32]) {
+  uint64_t x1 = ((uint64_t)(arg1[31]) << 56);
+  uint64_t x2 = ((uint64_t)(arg1[30]) << 48);
+  uint64_t x3 = ((uint64_t)(arg1[29]) << 40);
+  uint64_t x4 = ((uint64_t)(arg1[28]) << 32);
+  uint64_t x5 = ((uint64_t)(arg1[27]) << 24);
+  uint64_t x6 = ((uint64_t)(arg1[26]) << 16);
+  uint64_t x7 = ((uint64_t)(arg1[25]) << 8);
+  uint8_t x8 = (arg1[24]);
+  uint64_t x9 = ((uint64_t)(arg1[23]) << 56);
+  uint64_t x10 = ((uint64_t)(arg1[22]) << 48);
+  uint64_t x11 = ((uint64_t)(arg1[21]) << 40);
+  uint64_t x12 = ((uint64_t)(arg1[20]) << 32);
+  uint64_t x13 = ((uint64_t)(arg1[19]) << 24);
+  uint64_t x14 = ((uint64_t)(arg1[18]) << 16);
+  uint64_t x15 = ((uint64_t)(arg1[17]) << 8);
+  uint8_t x16 = (arg1[16]);
+  uint64_t x17 = ((uint64_t)(arg1[15]) << 56);
+  uint64_t x18 = ((uint64_t)(arg1[14]) << 48);
+  uint64_t x19 = ((uint64_t)(arg1[13]) << 40);
+  uint64_t x20 = ((uint64_t)(arg1[12]) << 32);
+  uint64_t x21 = ((uint64_t)(arg1[11]) << 24);
+  uint64_t x22 = ((uint64_t)(arg1[10]) << 16);
+  uint64_t x23 = ((uint64_t)(arg1[9]) << 8);
+  uint8_t x24 = (arg1[8]);
+  uint64_t x25 = ((uint64_t)(arg1[7]) << 56);
+  uint64_t x26 = ((uint64_t)(arg1[6]) << 48);
+  uint64_t x27 = ((uint64_t)(arg1[5]) << 40);
+  uint64_t x28 = ((uint64_t)(arg1[4]) << 32);
+  uint64_t x29 = ((uint64_t)(arg1[3]) << 24);
+  uint64_t x30 = ((uint64_t)(arg1[2]) << 16);
+  uint64_t x31 = ((uint64_t)(arg1[1]) << 8);
+  uint8_t x32 = (arg1[0]);
+  uint64_t x33 = (x32 + (x31 + (x30 + (x29 + (x28 + (x27 + (x26 + x25)))))));
+  uint64_t x34 = (x33 & UINT64_C(0xffffffffffffffff));
+  uint64_t x35 = (x8 + (x7 + (x6 + (x5 + (x4 + (x3 + (x2 + x1)))))));
+  uint64_t x36 = (x16 + (x15 + (x14 + (x13 + (x12 + (x11 + (x10 + x9)))))));
+  uint64_t x37 = (x24 + (x23 + (x22 + (x21 + (x20 + (x19 + (x18 + x17)))))));
+  uint64_t x38 = (x37 & UINT64_C(0xffffffffffffffff));
+  uint64_t x39 = (x36 & UINT64_C(0xffffffffffffffff));
+  out1[0] = x34;
+  out1[1] = x38;
+  out1[2] = x39;
+  out1[3] = x35;
+}
+
diff --git a/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/Firebase.h b/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/Firebase.h
new file mode 100755
index 0000000..3d6ac97
--- /dev/null
+++ b/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/Firebase.h	
@@ -0,0 +1,81 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <FirebaseCore/FirebaseCore.h>
+
+#if !defined(__has_include)
+  #error "Firebase.h won't import anything if your compiler doesn't support __has_include. Please \
+          import the headers individually."
+#else
+  #if __has_include(<FirebaseAnalytics/FirebaseAnalytics.h>)
+    #import <FirebaseAnalytics/FirebaseAnalytics.h>
+  #endif
+
+  #if __has_include(<FirebaseAppCheck/FirebaseAppCheck.h>)
+    #import <FirebaseAppCheck/FirebaseAppCheck.h>
+  #endif
+
+  #if __has_include(<FirebaseAppDistribution/FirebaseAppDistribution.h>)
+    #import <FirebaseAppDistribution/FirebaseAppDistribution.h>
+  #endif
+
+  #if __has_include(<FirebaseAuth/FirebaseAuth.h>)
+    #import <FirebaseAuth/FirebaseAuth.h>
+  #endif
+
+  #if __has_include(<FirebaseCrashlytics/FirebaseCrashlytics.h>)
+    #import <FirebaseCrashlytics/FirebaseCrashlytics.h>
+  #endif
+
+  #if __has_include(<FirebaseDatabase/FirebaseDatabase.h>)
+    #import <FirebaseDatabase/FirebaseDatabase.h>
+  #endif
+
+  #if __has_include(<FirebaseDynamicLinks/FirebaseDynamicLinks.h>)
+    #import <FirebaseDynamicLinks/FirebaseDynamicLinks.h>
+  #endif
+
+  #if __has_include(<FirebaseFirestore/FirebaseFirestore.h>)
+    #import <FirebaseFirestore/FirebaseFirestore.h>
+  #endif
+
+  #if __has_include(<FirebaseFunctions/FirebaseFunctions.h>)
+    #import <FirebaseFunctions/FirebaseFunctions.h>
+  #endif
+
+  #if __has_include(<FirebaseInAppMessaging/FirebaseInAppMessaging.h>)
+    #import <FirebaseInAppMessaging/FirebaseInAppMessaging.h>
+  #endif
+
+  #if __has_include(<FirebaseInstallations/FirebaseInstallations.h>)
+    #import <FirebaseInstallations/FirebaseInstallations.h>
+  #endif
+
+  #if __has_include(<FirebaseMessaging/FirebaseMessaging.h>)
+    #import <FirebaseMessaging/FirebaseMessaging.h>
+  #endif
+
+  #if __has_include(<FirebasePerformance/FirebasePerformance.h>)
+    #import <FirebasePerformance/FirebasePerformance.h>
+  #endif
+
+  #if __has_include(<FirebaseRemoteConfig/FirebaseRemoteConfig.h>)
+    #import <FirebaseRemoteConfig/FirebaseRemoteConfig.h>
+  #endif
+
+  #if __has_include(<FirebaseStorage/FirebaseStorage.h>)
+    #import <FirebaseStorage/FirebaseStorage.h>
+  #endif
+
+#endif  // defined(__has_include)
diff --git a/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/module.modulemap b/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/module.modulemap
new file mode 100755
index 0000000..3685b54
--- /dev/null
+++ b/ChattingApp 000/Pods/Firebase/CoreOnly/Sources/module.modulemap	
@@ -0,0 +1,4 @@
+module Firebase {
+  export *
+  header "Firebase.h"
+}
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Firebase/LICENSE b/ChattingApp 000/Pods/Firebase/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/Firebase/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
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diff --git a/ChattingApp 000/Pods/Firebase/README.md b/ChattingApp 000/Pods/Firebase/README.md
new file mode 100644
index 0000000..335fbb8
--- /dev/null
+++ b/ChattingApp 000/Pods/Firebase/README.md	
@@ -0,0 +1,333 @@
+[![Version](https://img.shields.io/cocoapods/v/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+
+[![Actions Status][gh-abtesting-badge]][gh-actions]
+[![Actions Status][gh-appcheck-badge]][gh-actions]
+[![Actions Status][gh-appdistribution-badge]][gh-actions]
+[![Actions Status][gh-auth-badge]][gh-actions]
+[![Actions Status][gh-cocoapods-integration-badge]][gh-actions]
+[![Actions Status][gh-core-badge]][gh-actions]
+[![Actions Status][gh-core-diagnostics-badge]][gh-actions]
+[![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+[![Actions Status][gh-dynamiclinks-badge]][gh-actions]
+[![Actions Status][gh-firebasepod-badge]][gh-actions]
+[![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-components-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
+[![Actions Status][gh-interop-badge]][gh-actions]
+[![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-mlmodeldownloader-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
+[![Actions Status][gh-storage-badge]][gh-actions]
+[![Actions Status][gh-symbolcollision-badge]][gh-actions]
+[![Actions Status][gh-zip-badge]][gh-actions]
+
+# Firebase Apple Open Source Development
+
+This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics
+and FirebaseML.
+
+Firebase is an app development platform with tools to help you build, grow and
+monetize your app. More information about Firebase can be found on the
+[official Firebase website](https://firebase.google.com).
+
+**Note** _FirebaseCombineSwift_ contains support for Apple's Combine framework. This module is currently under development, and not yet supported for use in production environments. Fore more details, please refer to the [docs](FirebaseCombineSwift/README.md).
+
+## Installation
+
+See the subsections below for details about the different installation methods.
+1. [Standard pod install](README.md#standard-pod-install)
+1. [Swift Package Manager](SwiftPackageManager.md)
+1. [Installing from the GitHub repo](README.md#installing-from-github)
+1. [Experimental Carthage](README.md#carthage-ios-only)
+
+### Standard pod install
+
+Go to
+[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).
+
+### Swift Package Manager
+
+Instructions for [Swift Package Manager](https://swift.org/package-manager/) support can be
+found at [SwiftPackageManager.md](SwiftPackageManager.md).
+
+### Installing from GitHub
+
+These instructions can be used to access the Firebase repo at other branches,
+tags, or commits.
+
+#### Background
+
+See
+[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
+for instructions and options about overriding pod source locations.
+
+#### Accessing Firebase Source Snapshots
+
+All of the official releases are tagged in this repo and available via CocoaPods. To access a local
+source snapshot or unreleased branch, use Podfile directives like the following:
+
+To access FirebaseFirestore via a branch:
+```ruby
+pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+```
+
+To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:
+
+```ruby
+pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
+pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
+```
+
+### Carthage (iOS only)
+
+Instructions for the experimental Carthage distribution are at
+[Carthage](Carthage.md).
+
+### Using Firebase from a Framework or a library
+
+[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)
+
+## Development
+
+To develop Firebase software in this repository, ensure that you have at least
+the following software:
+
+  * Xcode 12.2 (or later)
+
+CocoaPods is still the canonical way to develop, but much of the repo now supports
+development with Swift Package Manager.
+
+### CocoaPods
+
+Install
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+```ruby
+pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios
+```
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+Firestore has a self contained Xcode project. See
+[Firestore/README.md](Firestore/README.md).
+
+#### Development for Catalyst
+* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Swift Package Manager
+* To enable test schemes: `./scripts/setup_spm_tests.sh`
+* `open Package.swift` or double click `Package.swift` in Finder.
+* Xcode will open the project
+  * Choose a scheme for a library to build or test suite to run
+  * Choose a target platform by selecting the run destination along with the scheme
+
+### Adding a New Firebase Pod
+
+See [AddNewPod.md](AddNewPod.md).
+
+### Managing Headers and Imports
+
+See [HeadersImports.md](HeadersImports.md).
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@12
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+### Running Sample Apps
+In order to run the sample apps and integration tests, you'll need a valid
+`GoogleService-Info.plist` file. The Firebase Xcode project contains dummy plist
+files without real values, but can be replaced with real plist files. To get your own
+`GoogleService-Info.plist` files:
+
+1. Go to the [Firebase Console](https://console.firebase.google.com/)
+2. Create a new Firebase project, if you don't already have one
+3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
+identifier (e.g. `com.google.Database-Example`)
+4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.
+
+### Coverage Report Generation
+
+See [scripts/code_coverage_report/README.md](scripts/code_coverage_report/README.md).
+
+## Specific Component Instructions
+See the sections below for any special instructions for those components.
+
+### Firebase Auth
+
+If you're doing specific Firebase Auth development, see
+[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
+building and running the FirebaseAuth pod along with various samples and tests.
+
+### Firebase Database
+
+The Firebase Database Integration tests can be run against a locally running Database Emulator
+or against a production instance.
+
+To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
+running the integration test.
+
+To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
+`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
+[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
+running.
+
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
+### Firebase Storage
+
+To run the Storage Integration tests, follow the instructions in
+[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).
+
+#### Push Notifications
+
+Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
+In order to actually test receiving push notifications, you will need to:
+
+1. Change the bundle identifier of the sample app to something you own in your Apple Developer
+account, and enable that App ID for push notifications.
+2. You'll also need to
+[upload your APNs Provider Authentication Key or certificate to the
+Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
+at **Project Settings > Cloud Messaging > [Your Firebase App]**.
+3. Ensure your iOS device is added to your Apple Developer portal as a test device.
+
+#### iOS Simulator
+
+The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
+In order to receive push notifications, you'll have to follow the steps above and run the app on a
+physical device.
+
+## Building with Firebase on Apple platforms
+
+At this time, not all of Firebase's products are available across all Apple platforms. However,
+Firebase is constantly evolving and community supported efforts have helped expand Firebase's support.
+To keep up with the latest info regarding Firebase's support across Apple platforms, refer to
+[this chart](https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform)
+in Firebase's documentation.
+
+### Community Supported Efforts
+
+We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
+very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
+participate in the Firebase community.
+
+#### tvOS, macOS, watchOS and Catalyst
+Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and
+work on tvOS, macOS, watchOS and Catalyst.
+
+For tvOS, see the [Sample](Example/tvOSSample).
+For watchOS, currently only Messaging, Storage and Crashlytics (and their dependencies) have limited
+support. See the [Independent Watch App Sample](Example/watchOSSample).
+
+Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and
+this repository is actively developed primarily for iOS. While we can catch basic unit test issues
+with GitHub Actions, there may be some changes where the SDK no longer works as expected on macOS,
+tvOS or watchOS. If you encounter this, please
+[file an issue](https://github.com/firebase/firebase-ios-sdk/issues).
+
+During app setup in the console, you may get to a step that mentions something like "Checking if the
+app has communicated with our servers". This relies on Analytics and will not work on
+macOS/tvOS/watchOS/Catalyst.
+**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.
+
+#### Additional MacOS and Catalyst Notes
+
+* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
+to Build Settings.
+* For Catalyst, FirebaseFirestore requires signing the
+[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).
+
+#### Additional Crashlytics Notes
+* watchOS has limited support. Due to watchOS restrictions, mach exceptions and signal crashes are
+not recorded. (Crashes in SwiftUI are generated as mach exceptions, so will not be recorded)
+
+## Roadmap
+
+See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
+plans and directions.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository are licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+Your use of Firebase is governed by the
+[Terms of Service for Firebase Services](https://firebase.google.com/terms/).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
+[gh-appcheck-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/app_check/badge.svg
+[gh-appdistribution-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/appdistribution/badge.svg
+[gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
+[gh-cocoapods-integration-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/cocoapods-integration/badge.svg
+[gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
+[gh-core-diagnostics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core-diagnostics/badge.svg
+[gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
+[gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
+[gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
+[gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
+[gh-google-utilities-components-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities-components/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
+[gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
+[gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-mlmodeldownloader-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/mlmodeldownloader/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
+[gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
+[gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
+[gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/CHANGELOG.md b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/CHANGELOG.md
new file mode 100644
index 0000000..6d20d63
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/CHANGELOG.md	
@@ -0,0 +1,311 @@
+# 8.8.0
+- [fixed] Fall back to reCAPTCHA for phone auth app verification if the push notification is not received before the timeout. (#8653)
+
+# 8.6.0
+- [fixed] Annotated platform-level availability using `API_UNAVAILABLE` instead of conditionally compiling certain methods with `#if` directives (#8451).
+
+# 8.5.0
+- [fixed] Fixed an analyze issue introduced in Xcode 12.5. (#8411)
+
+# 8.2.0
+- [fixed] Fixed analyze issues introduced in Xcode 12.5. (#8210)
+- [fixed] Fixed a bug in the link with email link, Game Center, and phone auth flows. (#8196)
+
+# 8.0.0
+- [fixed] Fixed a crash that occurred when assigning auth settings. (#7670)
+
+# 7.8.0
+- [fixed] Fixed auth state sharing during first app launch. (#7472)
+
+# 7.6.0
+- [fixed] Auth emulator now works across the local network. (#7350)
+- [fixed] Fixed incorrect import for watchOS (#7425)
+
+# 7.4.0
+- [fixed] Check if the reverse client ID is configured as a custom URL scheme before setting it as the callback scheme. (#7211)
+- [added] Add ability to sync auth state across devices. (#6924)
+- [fixed] Add multi-tenancy support for email link sign-in. (#7246)
+
+# 7.3.0
+- [fixed] Catalyst browser issue with `verifyPhoneNumber` API. (#7049)
+
+# 7.1.0
+- [fixed] Fixed completion handler issue in `application(_:didReceiveRemoteNotification:fetchCompletionHandler:)` method. (#6863)
+
+# 7.0.0
+- [removed] Remove deprecated APIs `dataForKey`,`fetchProvidersForEmail:completion`, `signInAndRetrieveDataWithCredential:completion`, `reauthenticateAndRetrieveDataWithCredential:completion`, `linkAndRetrieveDataWithCredential:completion`. (#6607)
+- [added] Add support for the auth emulator. (#6624)
+- [changed] The global variables `FirebaseAuthVersionNum` and `FirebaseAuthVersionStr` are deleted.
+  `FirebaseVersion()` or `FIRFirebaseVersion()` should be used instead.
+
+# v6.9.1
+- [fixed] Internal source documentation. (#6371)
+
+# v6.9.0
+- [added] Added support for multi-tenancy (#6142).
+- [added] Added basic watchOS support. (#4621)
+- [changed] Improved Xcode completion of public API completion handlers in Swift. (#6283)
+
+# v6.8.0
+- [fixed] Fix bug where multiple keychain entries would result in user persistence failure. (#5906)
+- [changed] Added support for using GOOGLE_APP_ID in generic IDP and phone auth reCAPTCHA fallback flows. (#6121)
+
+# v6.7.1
+- [fixed] Fixed a multithreaded memory access issue on iOS. (#5979)
+
+# v6.7.0
+- [changed] Functionally neutral source reorganization for preliminary Swift Package Manager support. (#5856)
+
+# v6.5.3
+- [changed] Remove unused mfa request field "mfa_provider" (#5397)
+- [fixed] Suppress deprecation warnings when targeting iOS versions up to iOS 13. (#5437)
+
+# v6.5.2
+- [fixed] Handle calls to `useUserAccessGroup` soon after configure. (#4175)
+
+# v6.5.1
+- [changed] File structure changes. No functional change.
+- [changed] Code formatting changes.
+
+# v6.5.0
+- [feature] Added support of Multi-factor Authentication. (#4823)
+
+# v6.4.1
+- [fixed] Added support of UISceneDelegate for URL redirect. (#4380)
+- [fixed] Fixed rawNonce in encoder. (#4337)
+
+# v6.4.0
+- [feature] Added support for Sign-in with Apple. (#4183)
+
+# v6.3.1
+- [fixed] Removed usage of a deprecated property on iOS 13. (#4066)
+
+# v6.3.0
+- [added] Added methods allowing developers to link and reauthenticate with federated providers. (#3971)
+
+# v6.2.3
+- [fixed] Make sure the first valid auth domain is retrieved. (#3493)
+- [fixed] Add assertion for Facebook generic IDP flow. (#3208)
+- [fixed] Build for Catalyst. (#3549)
+
+# v6.2.2
+- [fixed] Fixed an issue where unlinking an email auth provider raised an incorrect error stating the account was not linked to an email auth provider. (#3405)
+- [changed] Renamed internal Keychain classes. (#3473)
+
+# v6.2.1
+- [added] Add new client error MISSING_CLIENT_IDENTIFIER. (#3341)
+
+# v6.2.0
+- [feature] Expose `secret` of OAuth credential in public header. (#3089)
+- [fixed] Fix a keychain issue where API key is incorrectly set. (#3239)
+
+# v6.1.2
+- [fixed] Fix line limits and linter warnings in public documentation. (#3139)
+
+# v6.1.1
+- [fixed] Fix an issue where a user can't link with email provider by email link. (#3030)
+
+# v6.1.0
+- [added] Add support of web.app as an auth domain. (#2959)
+- [fixed] Fix an issue where the return type of `getStoredUserForAccessGroup:error:` is nonnull. (#2879)
+
+# v6.0.0
+- [added] Add support of single sign on. (#2684)
+- [deprecated] Deprecate `reauthenticateAndRetrieveDataWithCredential:completion:`, `signInAndRetrieveDataWithCredential:completion:`, `linkAndRetrieveDataWithCredential:completion:`, `fetchProvidersForEmail:completion:`. (#2723, #2756)
+- [added] Returned oauth secret token in Generic IDP sign-in for Twitter. (#2663)
+- [removed] Remove pendingToken from public API. (#2676)
+- [changed] `GULAppDelegateSwizzler` is used for the app delegate swizzling. (#2591)
+
+# v5.4.2
+- [added] Support new error code ERROR_INVALID_PROVIDER_ID. (#2629)
+
+# v5.4.1
+- [deprecated] Deprecate Microsoft and Yahoo OAuth Provider ID (#2517)
+- [fixed] Fix an issue where an exception was thrown when linking OAuth credentials. (#2521)
+- [fixed] Fix an issue where a wrong error was thrown when handling error with
+  FEDERATED_USER_ID_ALREADY_LINKED. (#2522)
+
+# v5.4.0
+- [added] Add support of Generic IDP (#2405).
+
+# v5.3.0
+- [changed] Use the new registerInternalLibrary API to register with FirebaseCore. (#2137)
+
+# v5.2.0
+- [added] Add support of Game Center sign in (#2127).
+
+# v5.1.0
+- [added] Add support of custom FDL domain link (#2121).
+
+# v5.0.5
+- [changed] Restore SafariServices framework dependency (#2002).
+
+# v5.0.4
+- [fixed] Fix analyzer issues (#1740).
+
+# v5.0.3
+- [added] Add `FIRAuthErrorCodeMalformedJWT`, which is raised on JWT token parsing.
+  failures during auth operations (#1436).
+- [changed] Migrate to use FirebaseAuthInterop interfaces to access FirebaseAuth (#1501).
+
+# v5.0.2
+- [fixed] Fix an issue where JWT date timestamps weren't parsed correctly. (#1319)
+- [fixed] Fix an issue where anonymous accounts weren't correctly promoted to
+  non-anonymous when linked with passwordless email auth accounts. (#1383)
+- [fixed] Fix an exception from using an invalidated NSURLSession. (#1261)
+- [fixed] Fix a data race issue caught by the sanitizer. (#1446)
+
+# v5.0.1
+- [fixed] Restore 4.x level of support for extensions (#1357).
+
+# v5.0.0
+- [added] Adds APIs for phone Auth testing to bypass the verification flow (#1192).
+- [feature] Changes the callback block signature for sign in and create user methods
+  to provide an AuthDataResult that includes the user and user info (#1123, #1186).
+- [changed] Removes GoogleToolboxForMac dependency (#1175).
+- [removed] Removes miscellaneous deprecated APIs (#1188, #1200).
+
+# v4.6.1
+- [fixed] Fixes crash which occurred when certain Firebase IDTokens were being parsed (#1076).
+
+# v4.6.0
+- [added] Adds `getIDTokenResultWithCompletion:` and `getIDTokenResultForcingRefresh:completion:` APIs which
+  call back with an AuthTokenResult object. The Auth token result object contains the ID token JWT string and other properties associated with the token including the decoded available payload claims (#1004).
+
+- [added] Adds the `updateCurrentUser:completion:` API which sets the currentUser on the calling Auth instance to the provided user object (#1018).
+
+- [added] Adds client-side validation to prevent setting `handleCodeInApp` to false when performing
+  email-link authentication. If `handleCodeInApp` is set to false an invalid argument exception
+  is thrown (#931).
+
+- [added] Adds support for passing the deep link (which is embedded in the sign-in link sent via email) to the
+  `signInWithEmail:link:completion:` and `isSignInWithEmailLink:` methods during an
+  email/link sign-in flow (#1023).
+
+# v4.5.0
+- [added] Adds new API which provides a way to determine the sign-in methods associated with an
+  email address.
+- [added] Adds new API which allows authentication using only an email link (Passwordless Authentication
+  with email link).
+
+# v4.4.4
+- [fixed] Addresses CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF warnings that surface in newer versions of
+  Xcode and CocoaPods.
+- [fixed] Improves FIRUser documentation with clear message explaining when Firebase Auth attempts to validate
+  users and what happens when an invalidated user is detected (#694) .
+
+# v4.4.3
+- [added] Adds an explicit dependency on CoreGraphics from Firebase Auth.
+
+# v4.4.2
+- [fixed] Fixes bug where the FIRAuthResult object returned following a Phone Number authentication
+  always contained a nil FIRAdditionalUserInfo object. Now the FIRAdditionalUserInfo object is
+  never nil and its newUser field is populated correctly.
+
+# v4.4.0
+- [fixed] Adds new APIs which return an AuthDataResult object after successfully creating an
+  Email/Password user, signing in anonymously, signing in with Email/Password and signing
+  in with Custom Token. The AuthDataResult object contains the new user and additional
+  information pertaining to the new user.
+
+# v4.3.2
+- [fixed] Improves error handling for the phone number sign-in reCAPTCHA flow.
+- [fixed] Improves error handling for phone number linking flow.
+- [fixed] Fixes issue where after linking an anonymous user to a phone number the user remained
+  anonymous.
+
+# v4.3.1
+- [changed] Internal clean up.
+
+# v4.3.0
+- [added] Provides account creation and last sign-in dates as metadata to the user
+  object.
+- [added] Returns more descriptive errors for some error cases of the phone number
+  sign-in reCAPTCHA flow.
+- [fixed] Fixes an issue that invalid users were not automatically signed out earlier.
+- [fixed] Fixes an issue that ID token listeners were not fired in some cases.
+
+# v4.2.1
+- [fixed] Fixes a threading issue in phone number auth that completion block was not
+  executed on the main thread in some error cases.
+
+# v4.2.0
+- [added] Adds new phone number verification API which makes use of an intelligent reCAPTCHA to verify the application.
+
+# v4.1.1
+- [changed] Improves some method documentation in headers.
+
+# v4.1.0
+- [added] Allows the app to handle continue URL natively, e.g., from password reset
+  email.
+- [added] Allows the app to set language code, e.g., for sending password reset email.
+- [fixed] Fixes an issue that user's phone number did not persist on client.
+- [fixed] Fixes an issue that recover email action code type was reported as unknown.
+- [feature] Improves app start-up time by moving initialization off from the main
+  thread.
+- [fixed] Better reports missing email error when creating a new password user.
+- [fixed] Changes console message logging levels to be more consistent with other
+  Firebase products on the iOS platform.
+
+# 2017-05-17 -- v4.0.0
+- [added] Adds Phone Number Authentication.
+- [added] Adds support for generic OAuth2 identity providers.
+- [added] Adds methods that return additional user data from identity providers if
+  available when authenticating users.
+- [added] Improves session management by automatically refreshing tokens if possible
+  and signing out users if the session is detected invalidated, for example,
+  after the user changed password or deleted account from another device.
+- [fixed] Fixes an issue that reauthentication creates new user account if the user
+  credential is valid but does not match the currently signed in user.
+- [fixed] Fixes an issue that the "password" provider is not immediately listed on the
+  client side after adding a password to an account.
+- [changed] Changes factory methods to return non-null FIRAuth instances or raises an
+  exception, instead of returning nullable instances.
+- [changed] Changes auth state change listener to only be triggered when the user changes.
+- [added] Adds a new listener which is triggered whenever the ID token is changed.
+- [changed] Switches ERROR_EMAIL_ALREADY_IN_USE to
+  ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL when the email used in the
+  signInWithCredential: call is already in use by another account.
+- [deprecated] Deprecates FIREmailPasswordAuthProvider in favor of FIREmailAuthProvider.
+- [deprecated] Deprecates getTokenWithCompletion in favor of getIDTokenWithCompletion on
+  FIRUser.
+- [fixed] Changes Swift API names to better align with Swift convention.
+
+# 2017-02-06 -- v3.1.1
+- [added] Allows handling of additional errors when sending OOB action emails. The
+  server can respond with the following new error messages:
+  INVALID_MESSAGE_PAYLOAD,INVALID_SENDER and INVALID_RECIPIENT_EMAIL.
+- [fixed] Removes incorrect reference to FIRAuthErrorCodeCredentialTooOld in FIRUser.h.
+- [added] Provides additional error information from server if available.
+
+# 2016-12-13 -- v3.1.0
+- [added] Adds FIRAuth methods that enable the app to follow up with user actions
+  delivered by email, such as verifying email address or reset password.
+- [fixed] No longer applies the keychain workaround introduced in v3.0.5 on iOS 10.2
+  simulator or above since the issue has been fixed.
+- [fixed] Fixes nullability compilation warnings when used in Swift.
+- [fixed] Better reports missing password error.
+
+# 2016-10-24 -- v3.0.6
+- [changed] Switches to depend on open sourced GoogleToolboxForMac and GTMSessionFetcher.
+- [fixed] Improves logging of keychain error when initializing.
+
+# 2016-09-14 -- v3.0.5
+- [fixed] Works around a keychain issue in iOS 10 simulator.
+- [fixed] Reports the correct error for invalid email when signing in with email and
+  password.
+
+# 2016-07-18 -- v3.0.4
+- [fixed] Fixes a race condition bug that could crash the app with an exception from
+  NSURLSession on iOS 9.
+
+# 2016-06-20 -- v3.0.3
+- [added] Adds documentation for all possible errors returned by each method.
+- [fixed] Improves error handling and messages for a variety of error conditions.
+- [fixed] Whether or not an user is considered anonymous is now consistent with other
+  platforms.
+- [changed] A saved signed in user is now siloed between different Firebase projects
+  within the same app.
+
+# 2016-05-18 -- v3.0.2
+- Initial public release.
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/README.md b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/README.md
new file mode 100644
index 0000000..84818f8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/README.md	
@@ -0,0 +1,17 @@
+# Firebase Auth for iOS
+
+Firebase Auth enables apps to easily support multiple authentication options
+for their end users.
+
+Please visit [our developer site](https://firebase.google.com/docs/auth/) for
+integration instructions, documentation, support information, and terms of
+service.
+
+# Firebase Auth Development
+
+Example/Auth contains a set of samples and tests that integrate with
+FirebaseAuth.
+
+The unit tests run without any additional configuration along with the rest of
+Firebase. See [Tests/Sample/README.md](Tests/Sample/README.md) for
+information about setting up, running, and testing the samples.
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRActionCodeSettings.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRActionCodeSettings.m
new file mode 100644
index 0000000..b1671e6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRActionCodeSettings.m	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRActionCodeSettings.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRActionCodeSettings
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _iOSBundleID = [NSBundle mainBundle].bundleIdentifier;
+  }
+  return self;
+}
+
+- (void)setIOSBundleID:(NSString *)iOSBundleID {
+  _iOSBundleID = [iOSBundleID copy];
+}
+
+- (void)setAndroidPackageName:(NSString *)androidPackageName
+        installIfNotAvailable:(BOOL)installIfNotAvailable
+               minimumVersion:(nullable NSString *)minimumVersion {
+  _androidPackageName = [androidPackageName copy];
+  _androidInstallIfNotAvailable = installIfNotAvailable;
+  _androidMinimumVersion = [minimumVersion copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth.m
new file mode 100644
index 0000000..f11fe1c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth.m	
@@ -0,0 +1,2271 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+
+#if __has_include(<UIKit/UIKit.h>)
+#import <UIKit/UIKit.h>
+#endif
+
+#import <GoogleUtilities/GULAppDelegateSwizzler.h>
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+#import <GoogleUtilities/GULSceneDelegateSwizzler.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FirebaseAuth.h"
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthDispatcher.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthOperationType.h"
+#import "FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h"
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h"
+#import "FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h"
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.h"
+#import "FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h"
+#import "FirebaseAuth/Sources/User/FIRUser_Internal.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark-- Logger Service String.
+FIRLoggerService kFIRLoggerAuth = @"[Firebase/Auth]";
+
+#pragma mark - Constants
+
+#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
+const NSNotificationName FIRAuthStateDidChangeNotification = @"FIRAuthStateDidChangeNotification";
+#else
+NSString *const FIRAuthStateDidChangeNotification = @"FIRAuthStateDidChangeNotification";
+#endif  // defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
+
+/** @var kMaxWaitTimeForBackoff
+    @brief The maximum wait time before attempting to retry auto refreshing tokens after a failed
+        attempt.
+    @remarks This is the upper limit (in seconds) of the exponential backoff used for retrying
+        token refresh.
+ */
+static NSTimeInterval kMaxWaitTimeForBackoff = 16 * 60;
+
+/** @var kTokenRefreshHeadStart
+    @brief The amount of time before the token expires that proactive refresh should be attempted.
+ */
+NSTimeInterval kTokenRefreshHeadStart = 5 * 60;
+
+/** @var kUserKey
+    @brief Key of user stored in the keychain. Prefixed with a Firebase app name.
+ */
+static NSString *const kUserKey = @"%@_firebase_user";
+
+/** @var kMissingEmailInvalidParameterExceptionReason
+    @brief The reason for @c invalidParameterException when the email used to initiate password
+        reset is nil.
+ */
+static NSString *const kMissingEmailInvalidParameterExceptionReason =
+    @"The email used to initiate password reset cannot be nil.";
+
+/** @var kHandleCodeInAppFalseExceptionReason
+    @brief The reason for @c invalidParameterException when the handleCodeInApp parameter is false
+        on the ActionCodeSettings object used to send the link for Email-link Authentication.
+ */
+static NSString *const kHandleCodeInAppFalseExceptionReason =
+    @"You must set handleCodeInApp in your ActionCodeSettings to true for Email-link "
+     "Authentication.";
+
+static NSString *const kInvalidEmailSignInLinkExceptionMessage =
+    @"The link provided is not valid for email/link sign-in. Please check the link by calling "
+     "isSignInWithEmailLink:link: on Auth before attempting to use it for email/link sign-in.";
+
+/** @var kPasswordResetRequestType
+    @brief The action code type value for resetting password in the check action code response.
+ */
+static NSString *const kPasswordResetRequestType = @"PASSWORD_RESET";
+
+/** @var kVerifyEmailRequestType
+    @brief The action code type value for verifying email in the check action code response.
+ */
+static NSString *const kVerifyEmailRequestType = @"VERIFY_EMAIL";
+
+/** @var kRecoverEmailRequestType
+    @brief The action code type value for recovering email in the check action code response.
+ */
+static NSString *const kRecoverEmailRequestType = @"RECOVER_EMAIL";
+
+/** @var kEmailLinkSignInRequestType
+    @brief The action code type value for an email sign-in link in the check action code response.
+*/
+static NSString *const kEmailLinkSignInRequestType = @"EMAIL_SIGNIN";
+
+/** @var kVerifyAndChangeEmailRequestType
+    @brief The action code type value for verifing and changing email in the check action code
+           response.
+ */
+static NSString *const kVerifyAndChangeEmailRequestType = @"VERIFY_AND_CHANGE_EMAIL";
+
+/** @var kRevertSecondFactorAdditionRequestType
+    @brief The action code type value for reverting second factor addition in the check action code
+           response.
+ */
+static NSString *const kRevertSecondFactorAdditionRequestType = @"REVERT_SECOND_FACTOR_ADDITION";
+
+/** @var kMissingPasswordReason
+    @brief The reason why the @c FIRAuthErrorCodeWeakPassword error is thrown.
+    @remarks This error message will be localized in the future.
+ */
+static NSString *const kMissingPasswordReason = @"Missing Password";
+
+/** @var gKeychainServiceNameForAppName
+    @brief A map from Firebase app name to keychain service names.
+    @remarks This map is needed for looking up the keychain service name after the FIRApp instance
+        is deleted, to remove the associated keychain item. Accessing should occur within a
+        @syncronized([FIRAuth class]) context.
+ */
+static NSMutableDictionary *gKeychainServiceNameForAppName;
+
+#pragma mark - FIRActionCodeInfo
+
+@interface FIRActionCodeInfo ()
+
+/**
+    @brief The operation being performed.
+ */
+@property(nonatomic, readwrite) FIRActionCodeOperation operation;
+
+/** @property email
+    @brief The email address to which the code was sent. The new email address in the case of
+        FIRActionCodeOperationRecoverEmail.
+ */
+@property(nonatomic, nullable, readwrite, copy) NSString *email;
+
+/** @property previousEmail
+    @brief The current email address in the case of FIRActionCodeOperationRecoverEmail.
+ */
+@property(nonatomic, nullable, readwrite, copy) NSString *previousEmail;
+
+#if TARGET_OS_IOS
+/** @property multiFactorInfo
+    @brief The MultiFactorInfo object of the second factor to be reverted in case of
+        FIRActionCodeMultiFactorInfoKey.
+ */
+@property(nonatomic, nullable, readwrite) FIRMultiFactorInfo *multiFactorInfo;
+#endif
+
+@end
+
+@implementation FIRActionCodeInfo
+
+- (instancetype)initWithOperation:(FIRActionCodeOperation)operation
+                            email:(NSString *)email
+                         newEmail:(nullable NSString *)newEmail {
+  self = [super init];
+  if (self) {
+    _operation = operation;
+    if (newEmail) {
+      _email = [newEmail copy];
+      _previousEmail = [email copy];
+    } else {
+      _email = [email copy];
+    }
+  }
+  return self;
+}
+
+/** @fn actionCodeOperationForRequestType:
+    @brief Returns the corresponding operation type per provided request type string.
+    @param requestType Request type returned in in the server response.
+    @return The corresponding FIRActionCodeOperation for the supplied request type.
+ */
++ (FIRActionCodeOperation)actionCodeOperationForRequestType:(NSString *)requestType {
+  if ([requestType isEqualToString:kPasswordResetRequestType]) {
+    return FIRActionCodeOperationPasswordReset;
+  }
+  if ([requestType isEqualToString:kVerifyEmailRequestType]) {
+    return FIRActionCodeOperationVerifyEmail;
+  }
+  if ([requestType isEqualToString:kRecoverEmailRequestType]) {
+    return FIRActionCodeOperationRecoverEmail;
+  }
+  if ([requestType isEqualToString:kEmailLinkSignInRequestType]) {
+    return FIRActionCodeOperationEmailLink;
+  }
+  if ([requestType isEqualToString:kVerifyAndChangeEmailRequestType]) {
+    return FIRActionCodeOperationVerifyAndChangeEmail;
+  }
+  if ([requestType isEqualToString:kRevertSecondFactorAdditionRequestType]) {
+    return FIRActionCodeOperationRevertSecondFactorAddition;
+  }
+  return FIRActionCodeOperationUnknown;
+}
+
+@end
+
+#pragma mark - FIRActionCodeURL
+
+@implementation FIRActionCodeURL
+
+/** @fn FIRAuthParseURL:NSString
+    @brief Parses an incoming URL into all available query items.
+    @param urlString The url to be parsed.
+    @return A dictionary of available query items in the target URL.
+ */
++ (NSDictionary<NSString *, NSString *> *)parseURL:(NSString *)urlString {
+  NSString *linkURL = [NSURLComponents componentsWithString:urlString].query;
+  if (!linkURL) {
+    return @{};
+  }
+  NSArray<NSString *> *URLComponents = [linkURL componentsSeparatedByString:@"&"];
+  NSMutableDictionary<NSString *, NSString *> *queryItems =
+      [[NSMutableDictionary alloc] initWithCapacity:URLComponents.count];
+  for (NSString *component in URLComponents) {
+    NSRange equalRange = [component rangeOfString:@"="];
+    if (equalRange.location != NSNotFound) {
+      NSString *queryItemKey =
+          [[component substringToIndex:equalRange.location] stringByRemovingPercentEncoding];
+      NSString *queryItemValue =
+          [[component substringFromIndex:equalRange.location + 1] stringByRemovingPercentEncoding];
+      if (queryItemKey && queryItemValue) {
+        queryItems[queryItemKey] = queryItemValue;
+      }
+    }
+  }
+  return queryItems;
+}
+
++ (nullable instancetype)actionCodeURLWithLink:(NSString *)link {
+  NSDictionary<NSString *, NSString *> *queryItems = [FIRActionCodeURL parseURL:link];
+  if (!queryItems.count) {
+    NSURLComponents *urlComponents = [NSURLComponents componentsWithString:link];
+    queryItems = [FIRActionCodeURL parseURL:urlComponents.query];
+  }
+  if (!queryItems.count) {
+    return nil;
+  }
+  NSString *APIKey = queryItems[@"apiKey"];
+  NSString *actionCode = queryItems[@"oobCode"];
+  NSString *continueURLString = queryItems[@"continueUrl"];
+  NSString *languageCode = queryItems[@"languageCode"];
+  NSString *mode = queryItems[@"mode"];
+  NSString *tenantID = queryItems[@"tenantID"];
+  return [[FIRActionCodeURL alloc] initWithAPIKey:APIKey
+                                       actionCode:actionCode
+                                continueURLString:continueURLString
+                                     languageCode:languageCode
+                                             mode:mode
+                                         tenantID:tenantID];
+}
+
+- (nullable instancetype)initWithAPIKey:(NSString *)APIKey
+                             actionCode:(NSString *)actionCode
+                      continueURLString:(NSString *)continueURLString
+                           languageCode:(NSString *)languageCode
+                                   mode:(NSString *)mode
+                               tenantID:(NSString *)tenantID {
+  self = [super init];
+  if (self) {
+    _APIKey = APIKey;
+    _operation = [FIRActionCodeInfo actionCodeOperationForRequestType:mode];
+    _code = actionCode;
+    _continueURL = [NSURL URLWithString:continueURLString];
+    _languageCode = languageCode;
+  }
+  return self;
+}
+
+@end
+
+#pragma mark - FIRAuth
+
+#if TARGET_OS_IOS
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+@interface FIRAuth () <UIApplicationDelegate,
+                       UISceneDelegate,
+                       FIRLibrary,
+                       FIRComponentLifecycleMaintainer>
+#else
+@interface FIRAuth () <UIApplicationDelegate, FIRLibrary, FIRComponentLifecycleMaintainer>
+#endif
+#else
+@interface FIRAuth () <FIRLibrary, FIRComponentLifecycleMaintainer>
+#endif
+
+/** @property firebaseAppId
+    @brief The Firebase app ID.
+ */
+@property(nonatomic, copy, readonly) NSString *firebaseAppId;
+
+/** @property additionalFrameworkMarker
+    @brief Additional framework marker that will be added as part of the header of every request.
+ */
+@property(nonatomic, copy, nullable) NSString *additionalFrameworkMarker;
+
+/** @property storedUserManager
+    @brief The stored user manager.
+ */
+@property(nonatomic, strong, nullable) FIRAuthStoredUserManager *storedUserManager;
+
+/** @fn initWithApp:
+    @brief Creates a @c FIRAuth instance associated with the provided @c FIRApp instance.
+    @param app The application to associate the auth instance with.
+ */
+- (instancetype)initWithApp:(FIRApp *)app;
+
+@end
+
+@implementation FIRAuth {
+  /** @var _currentUser
+      @brief The current user.
+   */
+  FIRUser *_currentUser;
+
+  /** @var _firebaseAppName
+      @brief The Firebase app name.
+   */
+  NSString *_firebaseAppName;
+
+  /** @var _listenerHandles
+      @brief Handles returned from @c NSNotificationCenter for blocks which are "auth state did
+          change" notification listeners.
+      @remarks Mutations should occur within a @syncronized(self) context.
+   */
+  NSMutableArray<FIRAuthStateDidChangeListenerHandle> *_listenerHandles;
+
+  /** @var _keychainServices
+      @brief The keychain service.
+   */
+  FIRAuthKeychainServices *_keychainServices;
+
+  /** @var _lastNotifiedUserToken
+      @brief The user access (ID) token used last time for posting auth state changed notification.
+   */
+  NSString *_lastNotifiedUserToken;
+
+  /** @var _autoRefreshTokens
+      @brief This flag denotes whether or not tokens should be automatically refreshed.
+      @remarks Will only be set to @YES if the another Firebase service is included (additionally to
+        Firebase Auth).
+   */
+  BOOL _autoRefreshTokens;
+
+  /** @var _autoRefreshScheduled
+      @brief Whether or not token auto-refresh is currently scheduled.
+   */
+  BOOL _autoRefreshScheduled;
+
+  /** @var _isAppInBackground
+      @brief A flag that is set to YES if the app is put in the background and no when the app is
+          returned to the foreground.
+   */
+  BOOL _isAppInBackground;
+
+  /** @var _applicationDidBecomeActiveObserver
+      @brief An opaque object to act as the observer for UIApplicationDidBecomeActiveNotification.
+   */
+  id<NSObject> _applicationDidBecomeActiveObserver;
+
+  /** @var _applicationDidBecomeActiveObserver
+      @brief An opaque object to act as the observer for
+          UIApplicationDidEnterBackgroundNotification.
+   */
+  id<NSObject> _applicationDidEnterBackgroundObserver;
+}
+
++ (void)load {
+  [FIRApp registerInternalLibrary:(Class<FIRLibrary>)self withName:@"fire-auth"];
+}
+
++ (void)initialize {
+  gKeychainServiceNameForAppName = [[NSMutableDictionary alloc] init];
+}
+
++ (FIRAuth *)auth {
+  FIRApp *defaultApp = [FIRApp defaultApp];
+  if (!defaultApp) {
+    [NSException
+         raise:NSInternalInconsistencyException
+        format:@"The default FirebaseApp instance must be configured before the default Auth"
+               @"instance can be initialized. One way to ensure this is to call "
+               @"`FirebaseApp.configure()` in the App Delegate's "
+               @"`application(_:didFinishLaunchingWithOptions:)` (or the `@main` struct's "
+               @"initializer in SwiftUI)."];
+  }
+  return [self authWithApp:defaultApp];
+}
+
++ (FIRAuth *)authWithApp:(FIRApp *)app {
+  // Get the instance of Auth from the container, which will create or return the cached instance
+  // associated with this app.
+  id<FIRAuthInterop> auth = FIR_COMPONENT(FIRAuthInterop, app.container);
+  return (FIRAuth *)auth;
+}
+
+- (instancetype)initWithApp:(FIRApp *)app {
+  [FIRAuth setKeychainServiceNameForApp:app];
+  self = [self initWithAPIKey:app.options.APIKey appName:app.name];
+  if (self) {
+    _app = app;
+#if TARGET_OS_IOS
+    _authURLPresenter = [[FIRAuthURLPresenter alloc] init];
+#endif
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithAPIKey:(NSString *)APIKey appName:(NSString *)appName {
+  self = [super init];
+  if (self) {
+    _listenerHandles = [NSMutableArray array];
+    _requestConfiguration = [[FIRAuthRequestConfiguration alloc] initWithAPIKey:APIKey];
+    _firebaseAppName = [appName copy];
+#if TARGET_OS_IOS
+    _settings = [[FIRAuthSettings alloc] init];
+    static Class applicationClass = nil;
+    // iOS App extensions should not call [UIApplication sharedApplication], even if UIApplication
+    // responds to it.
+    if (![GULAppEnvironmentUtil isAppExtension]) {
+      Class cls = NSClassFromString(@"UIApplication");
+      if (cls && [cls respondsToSelector:NSSelectorFromString(@"sharedApplication")]) {
+        applicationClass = cls;
+      }
+    }
+    UIApplication *application = [applicationClass sharedApplication];
+
+    [GULAppDelegateSwizzler proxyOriginalDelegateIncludingAPNSMethods];
+    [GULSceneDelegateSwizzler proxyOriginalSceneDelegate];
+#endif  // TARGET_OS_IOS
+
+    // Continue with the rest of initialization in the work thread.
+    __weak FIRAuth *weakSelf = self;
+    dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+      // Load current user from Keychain.
+      FIRAuth *strongSelf = weakSelf;
+      if (!strongSelf) {
+        return;
+      }
+      NSString *keychainServiceName =
+          [FIRAuth keychainServiceNameForAppName:strongSelf->_firebaseAppName];
+      if (keychainServiceName) {
+        strongSelf->_keychainServices =
+            [[FIRAuthKeychainServices alloc] initWithService:keychainServiceName];
+        strongSelf.storedUserManager =
+            [[FIRAuthStoredUserManager alloc] initWithServiceName:keychainServiceName];
+      }
+
+      NSError *error;
+      NSString *storedUserAccessGroup =
+          [strongSelf.storedUserManager getStoredUserAccessGroupWithError:&error];
+      if (!error) {
+        if (!storedUserAccessGroup) {
+          FIRUser *user;
+          if ([strongSelf getUser:&user error:&error]) {
+            strongSelf.tenantID = user.tenantID;
+            [strongSelf updateCurrentUser:user byForce:NO savingToDisk:NO error:&error];
+            self->_lastNotifiedUserToken = user.rawAccessToken;
+          } else {
+            FIRLogError(kFIRLoggerAuth, @"I-AUT000001",
+                        @"Error loading saved user when starting up: %@", error);
+          }
+        } else {
+          [strongSelf internalUseUserAccessGroup:storedUserAccessGroup error:&error];
+          if (error) {
+            FIRLogError(kFIRLoggerAuth, @"I-AUT000001",
+                        @"Error loading saved user when starting up: %@", error);
+          }
+        }
+      } else {
+        FIRLogError(kFIRLoggerAuth, @"I-AUT000001",
+                    @"Error loading saved user when starting up: %@", error);
+      }
+
+#if TARGET_OS_IOS
+      // Initialize for phone number auth.
+      strongSelf->_tokenManager = [[FIRAuthAPNSTokenManager alloc] initWithApplication:application];
+
+      strongSelf->_appCredentialManager =
+          [[FIRAuthAppCredentialManager alloc] initWithKeychain:strongSelf->_keychainServices];
+
+      strongSelf->_notificationManager = [[FIRAuthNotificationManager alloc]
+           initWithApplication:application
+          appCredentialManager:strongSelf->_appCredentialManager];
+
+      [GULAppDelegateSwizzler registerAppDelegateInterceptor:strongSelf];
+#if ((TARGET_OS_IOS || TARGET_OS_TV) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000))
+      if (@available(iOS 13, tvos 13, *)) {
+        [GULSceneDelegateSwizzler registerSceneDelegateInterceptor:strongSelf];
+      }
+#endif  // ((TARGET_OS_IOS || TARGET_OS_TV) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000))
+#endif  // TARGET_OS_IOS
+    });
+  }
+  return self;
+}
+
+- (void)dealloc {
+  @synchronized(self) {
+    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
+    while (_listenerHandles.count != 0) {
+      FIRAuthStateDidChangeListenerHandle handleToRemove = _listenerHandles.lastObject;
+      [defaultCenter removeObserver:handleToRemove];
+      [_listenerHandles removeLastObject];
+    }
+
+#if TARGET_OS_IOS
+    [defaultCenter removeObserver:_applicationDidBecomeActiveObserver
+                             name:UIApplicationDidBecomeActiveNotification
+                           object:nil];
+    [defaultCenter removeObserver:_applicationDidEnterBackgroundObserver
+                             name:UIApplicationDidEnterBackgroundNotification
+                           object:nil];
+#endif
+  }
+}
+
+#pragma mark - Public API
+
+- (nullable FIRUser *)currentUser {
+  __block FIRUser *result;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = self->_currentUser;
+  });
+  return result;
+}
+
+- (void)signInWithProvider:(id<FIRFederatedAuthProvider>)provider
+                UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                completion:(nullable FIRAuthDataResultCallback)completion {
+#if TARGET_OS_IOS
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    [provider getCredentialWithUIDelegate:UIDelegate
+                               completion:^(FIRAuthCredential *_Nullable credential,
+                                            NSError *_Nullable error) {
+                                 if (error) {
+                                   decoratedCallback(nil, error);
+                                   return;
+                                 }
+                                 [self
+                                   internalSignInAndRetrieveDataWithCredential:credential
+                                                            isReauthentication:NO
+                                                                      callback:decoratedCallback];
+                               }];
+  });
+#endif  // TARGET_OS_IOS
+}
+
+- (void)fetchSignInMethodsForEmail:(nonnull NSString *)email
+                        completion:(nullable FIRSignInMethodQueryCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRCreateAuthURIRequest *request =
+        [[FIRCreateAuthURIRequest alloc] initWithIdentifier:email
+                                                continueURI:@"http://www.google.com/"
+                                       requestConfiguration:self->_requestConfiguration];
+    [FIRAuthBackend
+        createAuthURI:request
+             callback:^(FIRCreateAuthURIResponse *_Nullable response, NSError *_Nullable error) {
+               if (completion) {
+                 dispatch_async(dispatch_get_main_queue(), ^{
+                   completion(response.signinMethods, error);
+                 });
+               }
+             }];
+  });
+}
+
+- (void)signInWithEmail:(NSString *)email
+               password:(NSString *)password
+             completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    [self internalSignInAndRetrieveDataWithEmail:email
+                                        password:password
+                                      completion:^(FIRAuthDataResult *_Nullable authResult,
+                                                   NSError *_Nullable error) {
+                                        decoratedCallback(authResult, error);
+                                      }];
+  });
+}
+
+- (void)signInWithEmail:(NSString *)email
+                   link:(NSString *)link
+             completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    FIREmailPasswordAuthCredential *credential =
+        [[FIREmailPasswordAuthCredential alloc] initWithEmail:email link:link];
+    [self internalSignInAndRetrieveDataWithCredential:credential
+                                   isReauthentication:NO
+                                             callback:^(FIRAuthDataResult *_Nullable authResult,
+                                                        NSError *_Nullable error) {
+                                               decoratedCallback(authResult, error);
+                                             }];
+  });
+}
+
+/** @fn signInWithEmail:password:callback:
+    @brief Signs in using an email address and password.
+    @param email The user's email address.
+    @param password The user's password.
+    @param callback A block which is invoked when the sign in finishes (or is cancelled.) Invoked
+        asynchronously on the global auth work queue in the future.
+    @remarks This is the internal counterpart of this method, which uses a callback that does not
+        update the current user.
+ */
+- (void)signInWithEmail:(NSString *)email
+               password:(NSString *)password
+               callback:(FIRAuthResultCallback)callback {
+  FIRVerifyPasswordRequest *request =
+      [[FIRVerifyPasswordRequest alloc] initWithEmail:email
+                                             password:password
+                                 requestConfiguration:_requestConfiguration];
+
+  if (![request.password length]) {
+    callback(nil, [FIRAuthErrorUtils wrongPasswordErrorWithMessage:nil]);
+    return;
+  }
+  [FIRAuthBackend
+    verifyPassword:request
+          callback:^(FIRVerifyPasswordResponse *_Nullable response, NSError *_Nullable error) {
+            if (error) {
+              callback(nil, error);
+              return;
+            }
+            [self completeSignInWithAccessToken:response.IDToken
+                      accessTokenExpirationDate:response.approximateExpirationDate
+                                   refreshToken:response.refreshToken
+                                      anonymous:NO
+                                       callback:callback];
+          }];
+}
+
+/** @fn internalSignInAndRetrieveDataWithEmail:password:callback:
+    @brief Signs in using an email address and password.
+    @param email The user's email address.
+    @param password The user's password.
+    @param completion A block which is invoked when the sign in finishes (or is cancelled.) Invoked
+        asynchronously on the global auth work queue in the future.
+    @remarks This is the internal counterpart of this method, which uses a callback that does not
+        update the current user.
+ */
+- (void)internalSignInAndRetrieveDataWithEmail:(NSString *)email
+                                      password:(NSString *)password
+                                    completion:(FIRAuthDataResultCallback)completion {
+  FIREmailPasswordAuthCredential *credentail =
+      [[FIREmailPasswordAuthCredential alloc] initWithEmail:email password:password];
+  [self internalSignInAndRetrieveDataWithCredential:credentail
+                                 isReauthentication:NO
+                                           callback:completion];
+}
+
+/** @fn signInAndRetrieveDataWithGameCenterCredential:callback:
+    @brief Signs in using a game center credential.
+    @param credential The Game Center Auth Credential used to sign in.
+    @param callback A block which is invoked when the sign in finished (or is cancelled). Invoked
+        asynchronously on the global auth work queue in the future.
+ */
+- (void)signInAndRetrieveDataWithGameCenterCredential:(FIRGameCenterAuthCredential *)credential
+                                             callback:(FIRAuthDataResultCallback)callback {
+  FIRSignInWithGameCenterRequest *request =
+      [[FIRSignInWithGameCenterRequest alloc] initWithPlayerID:credential.playerID
+                                                  publicKeyURL:credential.publicKeyURL
+                                                     signature:credential.signature
+                                                          salt:credential.salt
+                                                     timestamp:credential.timestamp
+                                                   displayName:credential.displayName
+                                          requestConfiguration:_requestConfiguration];
+  [FIRAuthBackend
+      signInWithGameCenter:request
+                  callback:^(FIRSignInWithGameCenterResponse *_Nullable response,
+                             NSError *_Nullable error) {
+                    if (error) {
+                      if (callback) {
+                        callback(nil, error);
+                      }
+                      return;
+                    }
+
+                    [self
+                      completeSignInWithAccessToken:response.IDToken
+                          accessTokenExpirationDate:response.approximateExpirationDate
+                                       refreshToken:response.refreshToken
+                                          anonymous:NO
+                                           callback:^(FIRUser *_Nullable user,
+                                                      NSError *_Nullable error) {
+                                             if (error && callback) {
+                                               callback(nil, error);
+                                               return;
+                                             }
+                                             FIRAdditionalUserInfo *additionalUserInfo =
+                                                 [[FIRAdditionalUserInfo alloc]
+                                                     initWithProviderID:FIRGameCenterAuthProviderID
+                                                                profile:nil
+                                                               username:nil
+                                                              isNewUser:response.isNewUser];
+                                             FIRAuthDataResult *result =
+                                                 user ? [[FIRAuthDataResult alloc]
+                                                                  initWithUser:user
+                                                            additionalUserInfo:additionalUserInfo]
+                                                      : nil;
+                                             if (callback) {
+                                               callback(result, error);
+                                             }
+                                           }];
+                  }];
+}
+
+/** @fn internalSignInAndRetrieveDataWithEmail:link:completion:
+    @brief Signs in using an email and email sign-in link.
+    @param email The user's email address.
+    @param link The email sign-in link.
+    @param callback A block which is invoked when the sign in finishes (or is cancelled.) Invoked
+        asynchronously on the global auth work queue in the future.
+ */
+- (void)internalSignInAndRetrieveDataWithEmail:(nonnull NSString *)email
+                                          link:(nonnull NSString *)link
+                                      callback:(nullable FIRAuthDataResultCallback)callback {
+  if (![self isSignInWithEmailLink:link]) {
+    [FIRAuthExceptionUtils
+        raiseInvalidParameterExceptionWithReason:kInvalidEmailSignInLinkExceptionMessage];
+    return;
+  }
+  NSDictionary<NSString *, NSString *> *queryItems = [FIRAuthWebUtils parseURL:link];
+  if (![queryItems count]) {
+    NSURLComponents *urlComponents = [NSURLComponents componentsWithString:link];
+    queryItems = [FIRAuthWebUtils parseURL:urlComponents.query];
+  }
+  NSString *actionCode = queryItems[@"oobCode"];
+
+  FIREmailLinkSignInRequest *request =
+      [[FIREmailLinkSignInRequest alloc] initWithEmail:email
+                                               oobCode:actionCode
+                                  requestConfiguration:_requestConfiguration];
+
+  [FIRAuthBackend
+      emailLinkSignin:request
+             callback:^(FIREmailLinkSignInResponse *_Nullable response, NSError *_Nullable error) {
+               if (error) {
+                 if (callback) {
+                   callback(nil, error);
+                 }
+                 return;
+               }
+               [self completeSignInWithAccessToken:response.IDToken
+                         accessTokenExpirationDate:response.approximateExpirationDate
+                                      refreshToken:response.refreshToken
+                                         anonymous:NO
+                                          callback:^(FIRUser *_Nullable user,
+                                                     NSError *_Nullable error) {
+                                            if (error && callback) {
+                                              callback(nil, error);
+                                              return;
+                                            }
+                                            FIRAdditionalUserInfo *additionalUserInfo =
+                                                [[FIRAdditionalUserInfo alloc]
+                                                    initWithProviderID:FIREmailAuthProviderID
+                                                               profile:nil
+                                                              username:nil
+                                                             isNewUser:response.isNewUser];
+                                            FIRAuthDataResult *result =
+                                                user ? [[FIRAuthDataResult alloc]
+                                                                 initWithUser:user
+                                                           additionalUserInfo:additionalUserInfo]
+                                                     : nil;
+                                            if (callback) {
+                                              callback(result, error);
+                                            }
+                                          }];
+             }];
+}
+
+- (void)signInWithCredential:(FIRAuthCredential *)credential
+                  completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback callback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    [self internalSignInAndRetrieveDataWithCredential:credential
+                                   isReauthentication:NO
+                                             callback:callback];
+  });
+}
+
+- (void)internalSignInWithCredential:(FIRAuthCredential *)credential
+                            callback:(FIRAuthResultCallback)callback {
+  [self internalSignInAndRetrieveDataWithCredential:credential
+                                 isReauthentication:NO
+                                           callback:^(FIRAuthDataResult *_Nullable authResult,
+                                                      NSError *_Nullable error) {
+                                             callback(authResult.user, error);
+                                           }];
+}
+
+- (void)internalSignInAndRetrieveDataWithCredential:(FIRAuthCredential *)credential
+                                 isReauthentication:(BOOL)isReauthentication
+                                           callback:(nullable FIRAuthDataResultCallback)callback {
+  if ([credential isKindOfClass:[FIREmailPasswordAuthCredential class]]) {
+    // Special case for email/password credentials
+    FIREmailPasswordAuthCredential *emailPasswordCredential =
+        (FIREmailPasswordAuthCredential *)credential;
+
+    if (emailPasswordCredential.link) {
+      // Email link sign in
+      [self internalSignInAndRetrieveDataWithEmail:emailPasswordCredential.email
+                                              link:emailPasswordCredential.link
+                                          callback:callback];
+    } else {
+      // Email password sign in
+      FIRAuthResultCallback completeEmailSignIn =
+          ^(FIRUser *_Nullable user, NSError *_Nullable error) {
+            if (callback) {
+              if (error) {
+                callback(nil, error);
+                return;
+              }
+              FIRAdditionalUserInfo *additionalUserInfo =
+                  [[FIRAdditionalUserInfo alloc] initWithProviderID:FIREmailAuthProviderID
+                                                            profile:nil
+                                                           username:nil
+                                                          isNewUser:NO];
+              FIRAuthDataResult *result =
+                  user ? [[FIRAuthDataResult alloc] initWithUser:user
+                                              additionalUserInfo:additionalUserInfo]
+                       : nil;
+              callback(result, error);
+            }
+          };
+
+      [self signInWithEmail:emailPasswordCredential.email
+                   password:emailPasswordCredential.password
+                   callback:completeEmailSignIn];
+    }
+    return;
+  }
+
+  if ([credential isKindOfClass:[FIRGameCenterAuthCredential class]]) {
+    // Special case for Game Center credentials.
+    [self signInAndRetrieveDataWithGameCenterCredential:(FIRGameCenterAuthCredential *)credential
+                                               callback:callback];
+    return;
+  }
+
+#if TARGET_OS_IOS
+  if ([credential isKindOfClass:[FIRPhoneAuthCredential class]]) {
+    // Special case for phone auth credentials
+    FIRPhoneAuthCredential *phoneCredential = (FIRPhoneAuthCredential *)credential;
+    FIRAuthOperationType operation =
+        isReauthentication ? FIRAuthOperationTypeReauth : FIRAuthOperationTypeSignUpOrSignIn;
+    [self signInWithPhoneCredential:phoneCredential
+                          operation:operation
+                           callback:^(FIRVerifyPhoneNumberResponse *_Nullable response,
+                                      NSError *_Nullable error) {
+                             if (callback) {
+                               if (error) {
+                                 callback(nil, error);
+                                 return;
+                               }
+
+                               [self
+                                 completeSignInWithAccessToken:response.IDToken
+                                     accessTokenExpirationDate:response.approximateExpirationDate
+                                                  refreshToken:response.refreshToken
+                                                     anonymous:NO
+                                                      callback:^(FIRUser *_Nullable user,
+                                                                 NSError *_Nullable error) {
+                                                        if (error && callback) {
+                                                          callback(nil, error);
+                                                          return;
+                                                        }
+                                                        FIRAdditionalUserInfo *additionalUserInfo =
+                                                            [[FIRAdditionalUserInfo alloc]
+                                                                initWithProviderID:
+                                                                    FIRPhoneAuthProviderID
+                                                                           profile:nil
+                                                                          username:nil
+                                                                         isNewUser:response
+                                                                                       .isNewUser];
+                                                        FIRAuthDataResult *result =
+                                                            user ? [[FIRAuthDataResult alloc]
+                                                                             initWithUser:user
+                                                                       additionalUserInfo:
+                                                                           additionalUserInfo]
+                                                                 : nil;
+                                                        if (callback) {
+                                                          callback(result, error);
+                                                        }
+                                                      }];
+                             }
+                           }];
+    return;
+  }
+#endif
+  FIRVerifyAssertionRequest *request =
+      [[FIRVerifyAssertionRequest alloc] initWithProviderID:credential.provider
+                                       requestConfiguration:_requestConfiguration];
+  request.autoCreate = !isReauthentication;
+  [credential prepareVerifyAssertionRequest:request];
+  [FIRAuthBackend
+      verifyAssertion:request
+             callback:^(FIRVerifyAssertionResponse *response, NSError *error) {
+               if (error) {
+                 if (callback) {
+                   callback(nil, error);
+                 }
+                 return;
+               }
+
+               if (response.needConfirmation) {
+                 if (callback) {
+                   NSString *email = response.email;
+                   FIROAuthCredential *credential =
+                       [[FIROAuthCredential alloc] initWithVerifyAssertionResponse:response];
+                   callback(nil,
+                            [FIRAuthErrorUtils
+                                accountExistsWithDifferentCredentialErrorWithEmail:email
+                                                                 updatedCredential:credential]);
+                 }
+                 return;
+               }
+
+               if (!response.providerID.length) {
+                 if (callback) {
+                   callback(nil, [FIRAuthErrorUtils
+                                     unexpectedResponseWithDeserializedResponse:response]);
+                 }
+                 return;
+               }
+               [self
+                 completeSignInWithAccessToken:response.IDToken
+                     accessTokenExpirationDate:response.approximateExpirationDate
+                                  refreshToken:response.refreshToken
+                                     anonymous:NO
+                                      callback:^(FIRUser *_Nullable user,
+                                                 NSError *_Nullable error) {
+                                        if (callback) {
+                                          if (error) {
+                                            callback(nil, error);
+                                            return;
+                                          }
+                                          FIRAdditionalUserInfo *additionalUserInfo =
+                                              [FIRAdditionalUserInfo
+                                                  userInfoWithVerifyAssertionResponse:response];
+                                          FIROAuthCredential *updatedOAuthCredential =
+                                              [[FIROAuthCredential alloc]
+                                                  initWithVerifyAssertionResponse:response];
+                                          FIRAuthDataResult *result =
+                                              user ? [[FIRAuthDataResult alloc]
+                                                               initWithUser:user
+                                                         additionalUserInfo:additionalUserInfo
+                                                                 credential:updatedOAuthCredential]
+                                                   : nil;
+                                          callback(result, error);
+                                        }
+                                      }];
+             }];
+}
+
+- (void)signInAnonymouslyWithCompletion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    if (self->_currentUser.anonymous) {
+      FIRAuthDataResult *result = [[FIRAuthDataResult alloc] initWithUser:self->_currentUser
+                                                       additionalUserInfo:nil];
+      decoratedCallback(result, nil);
+      return;
+    }
+    [self internalSignInAnonymouslyWithCompletion:^(FIRSignUpNewUserResponse *_Nullable response,
+                                                    NSError *_Nullable error) {
+      if (error) {
+        decoratedCallback(nil, error);
+        return;
+      }
+      [self completeSignInWithAccessToken:response.IDToken
+                accessTokenExpirationDate:response.approximateExpirationDate
+                             refreshToken:response.refreshToken
+                                anonymous:YES
+                                 callback:^(FIRUser *_Nullable user, NSError *_Nullable error) {
+                                   if (error) {
+                                     decoratedCallback(nil, error);
+                                     return;
+                                   }
+                                   FIRAdditionalUserInfo *additionalUserInfo =
+                                       [[FIRAdditionalUserInfo alloc] initWithProviderID:nil
+                                                                                 profile:nil
+                                                                                username:nil
+                                                                               isNewUser:YES];
+                                   FIRAuthDataResult *authDataResult =
+                                       user ? [[FIRAuthDataResult alloc]
+                                                        initWithUser:user
+                                                  additionalUserInfo:additionalUserInfo]
+                                            : nil;
+                                   decoratedCallback(authDataResult, error);
+                                 }];
+    }];
+  });
+}
+
+- (void)signInWithCustomToken:(NSString *)token
+                   completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    [self internalSignInAndRetrieveDataWithCustomToken:token
+                                            completion:^(FIRAuthDataResult *_Nullable authResult,
+                                                         NSError *_Nullable error) {
+                                              decoratedCallback(authResult, error);
+                                            }];
+  });
+}
+
+- (void)createUserWithEmail:(NSString *)email
+                   password:(NSString *)password
+                 completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthDataResultCallback decoratedCallback =
+        [self signInFlowAuthDataResultCallbackByDecoratingCallback:completion];
+    [self internalCreateUserWithEmail:email
+                             password:password
+                           completion:^(FIRSignUpNewUserResponse *_Nullable response,
+                                        NSError *_Nullable error) {
+                             if (error) {
+                               decoratedCallback(nil, error);
+                               return;
+                             }
+                             [self
+                               completeSignInWithAccessToken:response.IDToken
+                                   accessTokenExpirationDate:response.approximateExpirationDate
+                                                refreshToken:response.refreshToken
+                                                   anonymous:NO
+                                                    callback:^(FIRUser *_Nullable user,
+                                                               NSError *_Nullable error) {
+                                                      if (error) {
+                                                        decoratedCallback(nil, error);
+                                                        return;
+                                                      }
+                                                      FIRAdditionalUserInfo *additionalUserInfo =
+                                                          [[FIRAdditionalUserInfo alloc]
+                                                              initWithProviderID:
+                                                                  FIREmailAuthProviderID
+                                                                         profile:nil
+                                                                        username:nil
+                                                                       isNewUser:YES];
+                                                      FIRAuthDataResult *authDataResult =
+                                                          user ? [[FIRAuthDataResult alloc]
+                                                                           initWithUser:user
+                                                                     additionalUserInfo:
+                                                                         additionalUserInfo]
+                                                               : nil;
+                                                      decoratedCallback(authDataResult, error);
+                                                    }];
+                           }];
+  });
+}
+
+- (void)confirmPasswordResetWithCode:(NSString *)code
+                         newPassword:(NSString *)newPassword
+                          completion:(FIRConfirmPasswordResetCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRResetPasswordRequest *request =
+        [[FIRResetPasswordRequest alloc] initWithOobCode:code
+                                             newPassword:newPassword
+                                    requestConfiguration:self->_requestConfiguration];
+    [FIRAuthBackend
+        resetPassword:request
+             callback:^(FIRResetPasswordResponse *_Nullable response, NSError *_Nullable error) {
+               if (completion) {
+                 dispatch_async(dispatch_get_main_queue(), ^{
+                   if (error) {
+                     completion(error);
+                     return;
+                   }
+                   completion(nil);
+                 });
+               }
+             }];
+  });
+}
+
+- (void)checkActionCode:(NSString *)code completion:(FIRCheckActionCodeCallBack)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRResetPasswordRequest *request =
+        [[FIRResetPasswordRequest alloc] initWithOobCode:code
+                                             newPassword:nil
+                                    requestConfiguration:self->_requestConfiguration];
+    [FIRAuthBackend
+        resetPassword:request
+             callback:^(FIRResetPasswordResponse *_Nullable response, NSError *_Nullable error) {
+               if (completion) {
+                 if (error) {
+                   dispatch_async(dispatch_get_main_queue(), ^{
+                     completion(nil, error);
+                   });
+                   return;
+                 }
+                 FIRActionCodeOperation operation =
+                     [FIRActionCodeInfo actionCodeOperationForRequestType:response.requestType];
+                 FIRActionCodeInfo *actionCodeInfo =
+                     [[FIRActionCodeInfo alloc] initWithOperation:operation
+                                                            email:response.email
+                                                         newEmail:response.verifiedEmail];
+                 dispatch_async(dispatch_get_main_queue(), ^{
+                   completion(actionCodeInfo, nil);
+                 });
+               }
+             }];
+  });
+}
+
+- (void)verifyPasswordResetCode:(NSString *)code
+                     completion:(FIRVerifyPasswordResetCodeCallback)completion {
+  [self checkActionCode:code
+             completion:^(FIRActionCodeInfo *_Nullable info, NSError *_Nullable error) {
+               if (completion) {
+                 if (error) {
+                   completion(nil, error);
+                   return;
+                 }
+                 completion(info.email, nil);
+               }
+             }];
+}
+
+- (void)applyActionCode:(NSString *)code completion:(FIRApplyActionCodeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRSetAccountInfoRequest *request =
+        [[FIRSetAccountInfoRequest alloc] initWithRequestConfiguration:self->_requestConfiguration];
+    request.OOBCode = code;
+    [FIRAuthBackend
+        setAccountInfo:request
+              callback:^(FIRSetAccountInfoResponse *_Nullable response, NSError *_Nullable error) {
+                if (completion) {
+                  dispatch_async(dispatch_get_main_queue(), ^{
+                    completion(error);
+                  });
+                }
+              }];
+  });
+}
+
+- (void)sendPasswordResetWithEmail:(NSString *)email
+                        completion:(nullable FIRSendPasswordResetCallback)completion {
+  [self sendPasswordResetWithNullableActionCodeSettings:nil email:email completion:completion];
+}
+
+- (void)sendPasswordResetWithEmail:(NSString *)email
+                actionCodeSettings:(FIRActionCodeSettings *)actionCodeSettings
+                        completion:(nullable FIRSendPasswordResetCallback)completion {
+  [self sendPasswordResetWithNullableActionCodeSettings:actionCodeSettings
+                                                  email:email
+                                             completion:completion];
+}
+
+/** @fn sendPasswordResetWithNullableActionCodeSettings:actionCodeSetting:email:completion:
+    @brief Initiates a password reset for the given email address and @FIRActionCodeSettings object.
+
+    @param actionCodeSettings Optionally, An @c FIRActionCodeSettings object containing settings
+        related to the handling action codes.
+    @param email The email address of the user.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+ */
+- (void)sendPasswordResetWithNullableActionCodeSettings:
+            (nullable FIRActionCodeSettings *)actionCodeSettings
+                                                  email:(NSString *)email
+                                             completion:
+                                                 (nullable FIRSendPasswordResetCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    if (!email) {
+      [FIRAuthExceptionUtils
+          raiseInvalidParameterExceptionWithReason:kMissingEmailInvalidParameterExceptionReason];
+      return;
+    }
+    FIRGetOOBConfirmationCodeRequest *request = [FIRGetOOBConfirmationCodeRequest
+        passwordResetRequestWithEmail:email
+                   actionCodeSettings:actionCodeSettings
+                 requestConfiguration:self->_requestConfiguration];
+    [FIRAuthBackend getOOBConfirmationCode:request
+                                  callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
+                                             NSError *_Nullable error) {
+                                    if (completion) {
+                                      dispatch_async(dispatch_get_main_queue(), ^{
+                                        completion(error);
+                                      });
+                                    }
+                                  }];
+  });
+}
+
+- (void)sendSignInLinkToEmail:(nonnull NSString *)email
+           actionCodeSettings:(nonnull FIRActionCodeSettings *)actionCodeSettings
+                   completion:(nullable FIRSendSignInLinkToEmailCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    if (!email) {
+      [FIRAuthExceptionUtils
+          raiseInvalidParameterExceptionWithReason:kMissingEmailInvalidParameterExceptionReason];
+    }
+
+    if (!actionCodeSettings.handleCodeInApp) {
+      [FIRAuthExceptionUtils
+          raiseInvalidParameterExceptionWithReason:kHandleCodeInAppFalseExceptionReason];
+    }
+    FIRGetOOBConfirmationCodeRequest *request =
+        [FIRGetOOBConfirmationCodeRequest signInWithEmailLinkRequest:email
+                                                  actionCodeSettings:actionCodeSettings
+                                                requestConfiguration:self->_requestConfiguration];
+    [FIRAuthBackend getOOBConfirmationCode:request
+                                  callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
+                                             NSError *_Nullable error) {
+                                    if (completion) {
+                                      dispatch_async(dispatch_get_main_queue(), ^{
+                                        completion(error);
+                                      });
+                                    }
+                                  }];
+  });
+}
+
+- (void)updateCurrentUser:(FIRUser *)user completion:(nullable FIRUserUpdateCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    if (!user) {
+      if (completion) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          completion([FIRAuthErrorUtils nullUserErrorWithMessage:nil]);
+        });
+      }
+      return;
+    }
+    void (^updateUserBlock)(FIRUser *user) = ^(FIRUser *user) {
+      NSError *error;
+      [self updateCurrentUser:user byForce:YES savingToDisk:YES error:(&error)];
+      if (error) {
+        if (completion) {
+          dispatch_async(dispatch_get_main_queue(), ^{
+            completion(error);
+          });
+        }
+        return;
+      }
+      if (completion) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          completion(nil);
+        });
+      }
+    };
+    if (![user.requestConfiguration.APIKey isEqualToString:self->_requestConfiguration.APIKey]) {
+      // If the API keys are different, then we need to confirm that the user belongs to the same
+      // project before proceeding.
+      user.requestConfiguration = self->_requestConfiguration;
+      [user reloadWithCompletion:^(NSError *_Nullable error) {
+        if (error) {
+          if (completion) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+              completion(error);
+            });
+          }
+          return;
+        }
+        updateUserBlock(user);
+      }];
+    } else {
+      updateUserBlock(user);
+    }
+  });
+}
+
+- (BOOL)signOut:(NSError *_Nullable __autoreleasing *_Nullable)error {
+  __block BOOL result = YES;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    if (!self->_currentUser) {
+      return;
+    }
+    result = [self updateCurrentUser:nil byForce:NO savingToDisk:YES error:error];
+  });
+  return result;
+}
+
+- (BOOL)signOutByForceWithUserID:(NSString *)userID error:(NSError *_Nullable *_Nullable)error {
+  if (_currentUser.uid != userID) {
+    return YES;
+  }
+  return [self updateCurrentUser:nil byForce:YES savingToDisk:YES error:error];
+}
+
+- (BOOL)isSignInWithEmailLink:(NSString *)link {
+  if (link.length == 0) {
+    return NO;
+  }
+  NSDictionary<NSString *, NSString *> *queryItems = [FIRAuthWebUtils parseURL:link];
+  if (![queryItems count]) {
+    NSURLComponents *urlComponents = [NSURLComponents componentsWithString:link];
+    if (!urlComponents.query) {
+      return NO;
+    }
+    queryItems = [FIRAuthWebUtils parseURL:urlComponents.query];
+  }
+
+  if (![queryItems count]) {
+    return NO;
+  }
+
+  NSString *actionCode = queryItems[@"oobCode"];
+  NSString *mode = queryItems[@"mode"];
+
+  if (actionCode && [mode isEqualToString:@"signIn"]) {
+    return YES;
+  }
+  return NO;
+}
+
+- (FIRAuthStateDidChangeListenerHandle)addAuthStateDidChangeListener:
+    (FIRAuthStateDidChangeListenerBlock)listener {
+  __block BOOL firstInvocation = YES;
+  __block NSString *previousUserID;
+  return [self addIDTokenDidChangeListener:^(FIRAuth *_Nonnull auth, FIRUser *_Nullable user) {
+    BOOL shouldCallListener = firstInvocation || !(previousUserID == user.uid ||
+                                                   [previousUserID isEqualToString:user.uid]);
+    firstInvocation = NO;
+    previousUserID = [user.uid copy];
+    if (shouldCallListener) {
+      listener(auth, user);
+    }
+  }];
+}
+
+- (void)removeAuthStateDidChangeListener:(FIRAuthStateDidChangeListenerHandle)listenerHandle {
+  [self removeIDTokenDidChangeListener:listenerHandle];
+}
+
+- (FIRIDTokenDidChangeListenerHandle)addIDTokenDidChangeListener:
+    (FIRIDTokenDidChangeListenerBlock)listener {
+  if (!listener) {
+    [NSException raise:NSInvalidArgumentException format:@"Listener must not be nil."];
+    return nil;
+  }
+  FIRAuthStateDidChangeListenerHandle handle;
+  NSNotificationCenter *notifications = [NSNotificationCenter defaultCenter];
+  handle = [notifications addObserverForName:FIRAuthStateDidChangeNotification
+                                      object:self
+                                       queue:[NSOperationQueue mainQueue]
+                                  usingBlock:^(NSNotification *_Nonnull notification) {
+                                    FIRAuth *auth = notification.object;
+                                    listener(auth, auth.currentUser);
+                                  }];
+  @synchronized(self) {
+    [_listenerHandles addObject:handle];
+  }
+  dispatch_async(dispatch_get_main_queue(), ^{
+    listener(self, self->_currentUser);
+  });
+  return handle;
+}
+
+- (void)removeIDTokenDidChangeListener:(FIRIDTokenDidChangeListenerHandle)listenerHandle {
+  [[NSNotificationCenter defaultCenter] removeObserver:listenerHandle];
+  @synchronized(self) {
+    [_listenerHandles removeObject:listenerHandle];
+  }
+}
+
+- (void)useAppLanguage {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    self->_requestConfiguration.languageCode = [[NSLocale preferredLanguages] firstObject];
+  });
+}
+
+- (void)useEmulatorWithHost:(NSString *)host port:(NSInteger)port {
+  NSAssert(host.length > 0, @"Cannot connect to nil or empty host");
+
+  NSString *formattedHost;
+  if ([host containsString:@":"]) {
+    // Host is an IPv6 address and should be formatted with surrounding brackets.
+    formattedHost = [NSString stringWithFormat:@"[%@]", host];
+  } else {
+    formattedHost = host;
+  }
+
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    self->_requestConfiguration.emulatorHostAndPort =
+        [NSString stringWithFormat:@"%@:%ld", formattedHost, (long)port];
+#if TARGET_OS_IOS
+    self->_settings.appVerificationDisabledForTesting = YES;
+#endif
+  });
+}
+
+- (nullable NSString *)languageCode {
+  return _requestConfiguration.languageCode;
+}
+
+- (void)setLanguageCode:(nullable NSString *)languageCode {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    self->_requestConfiguration.languageCode = [languageCode copy];
+  });
+}
+
+- (nullable NSString *)additionalFrameworkMarker {
+  return self->_requestConfiguration.additionalFrameworkMarker;
+}
+
+- (void)setAdditionalFrameworkMarker:(nullable NSString *)additionalFrameworkMarker {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    self->_requestConfiguration.additionalFrameworkMarker = [additionalFrameworkMarker copy];
+  });
+}
+
+#if TARGET_OS_IOS
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-property-ivar"
+// The warning is ignored because we use the token manager to get the token, instead of using the
+// ivar.
+- (nullable NSData *)APNSToken {
+  __block NSData *result = nil;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = self->_tokenManager.token.data;
+  });
+  return result;
+}
+#pragma clang diagnostic pop
+
+#pragma mark - UIApplicationDelegate
+
+- (void)application:(UIApplication *)application
+    didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
+  [self setAPNSToken:deviceToken type:FIRAuthAPNSTokenTypeUnknown];
+}
+
+- (void)application:(UIApplication *)application
+    didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    [self->_tokenManager cancelWithError:error];
+  });
+}
+
+- (void)application:(UIApplication *)application
+    didReceiveRemoteNotification:(NSDictionary *)userInfo
+          fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
+  [self canHandleNotification:userInfo];
+  completionHandler(UIBackgroundFetchResultNoData);
+}
+
+// iOS 10 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
+- (void)application:(UIApplication *)application
+    didReceiveRemoteNotification:(NSDictionary *)userInfo {
+  [self canHandleNotification:userInfo];
+}
+#pragma clang diagnostic pop
+
+- (BOOL)application:(UIApplication *)app
+            openURL:(NSURL *)url
+            options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options {
+  return [self canHandleURL:url];
+}
+
+// iOS 10 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
+- (BOOL)application:(UIApplication *)application
+              openURL:(NSURL *)url
+    sourceApplication:(nullable NSString *)sourceApplication
+           annotation:(id)annotation {
+  return [self canHandleURL:url];
+}
+#pragma clang diagnostic pop
+
+- (void)setAPNSToken:(NSData *)token type:(FIRAuthAPNSTokenType)type {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    self->_tokenManager.token = [[FIRAuthAPNSToken alloc] initWithData:token type:type];
+  });
+}
+
+- (BOOL)canHandleNotification:(NSDictionary *)userInfo {
+  __block BOOL result = NO;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = [self->_notificationManager canHandleNotification:userInfo];
+  });
+  return result;
+}
+
+- (BOOL)canHandleURL:(NSURL *)URL {
+  __block BOOL result = NO;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = [self->_authURLPresenter canHandleURL:URL];
+  });
+  return result;
+}
+
+#pragma mark - UISceneDelegate
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+- (void)scene:(UIScene *)scene
+    openURLContexts:(NSSet<UIOpenURLContext *> *)URLContexts API_AVAILABLE(ios(13.0)) {
+  for (UIOpenURLContext *urlContext in URLContexts) {
+    NSURL *url = [urlContext URL];
+    [self canHandleURL:url];
+  }
+}
+#endif  // __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+#endif  // TARGET_OS_IOS
+
+#pragma mark - Internal Methods
+
+#if TARGET_OS_IOS
+/** @fn signInWithPhoneCredential:callback:
+    @brief Signs in using a phone credential.
+    @param credential The Phone Auth credential used to sign in.
+    @param operation The type of operation for which this sign-in attempt is initiated.
+    @param callback A block which is invoked when the sign in finishes (or is cancelled.) Invoked
+        asynchronously on the global auth work queue in the future.
+ */
+- (void)signInWithPhoneCredential:(FIRPhoneAuthCredential *)credential
+                        operation:(FIRAuthOperationType)operation
+                         callback:(FIRVerifyPhoneNumberResponseCallback)callback {
+  if (credential.temporaryProof.length && credential.phoneNumber.length) {
+    FIRVerifyPhoneNumberRequest *request =
+        [[FIRVerifyPhoneNumberRequest alloc] initWithTemporaryProof:credential.temporaryProof
+                                                        phoneNumber:credential.phoneNumber
+                                                          operation:operation
+                                               requestConfiguration:_requestConfiguration];
+    [FIRAuthBackend verifyPhoneNumber:request callback:callback];
+    return;
+  }
+
+  if (!credential.verificationID.length) {
+    callback(nil, [FIRAuthErrorUtils missingVerificationIDErrorWithMessage:nil]);
+    return;
+  }
+  if (!credential.verificationCode.length) {
+    callback(nil, [FIRAuthErrorUtils missingVerificationCodeErrorWithMessage:nil]);
+    return;
+  }
+  FIRVerifyPhoneNumberRequest *request =
+      [[FIRVerifyPhoneNumberRequest alloc] initWithVerificationID:credential.verificationID
+                                                 verificationCode:credential.verificationCode
+                                                        operation:operation
+                                             requestConfiguration:_requestConfiguration];
+  [FIRAuthBackend verifyPhoneNumber:request callback:callback];
+}
+
+#endif
+
+/** @fn internalSignInAndRetrieveDataWithCustomToken:completion:
+    @brief Signs in a Firebase user given a custom token.
+    @param token A self-signed custom auth token.
+    @param completion A block which is invoked when the custom token sign in request completes.
+ */
+- (void)internalSignInAndRetrieveDataWithCustomToken:(NSString *)token
+                                          completion:
+                                              (nullable FIRAuthDataResultCallback)completion {
+  FIRVerifyCustomTokenRequest *request =
+      [[FIRVerifyCustomTokenRequest alloc] initWithToken:token
+                                    requestConfiguration:_requestConfiguration];
+  [FIRAuthBackend
+      verifyCustomToken:request
+               callback:^(FIRVerifyCustomTokenResponse *_Nullable response,
+                          NSError *_Nullable error) {
+                 if (error) {
+                   if (completion) {
+                     completion(nil, error);
+                     return;
+                   }
+                 }
+                 [self completeSignInWithAccessToken:response.IDToken
+                           accessTokenExpirationDate:response.approximateExpirationDate
+                                        refreshToken:response.refreshToken
+                                           anonymous:NO
+                                            callback:^(FIRUser *_Nullable user,
+                                                       NSError *_Nullable error) {
+                                              if (error && completion) {
+                                                completion(nil, error);
+                                                return;
+                                              }
+                                              FIRAdditionalUserInfo *additonalUserInfo =
+                                                  [[FIRAdditionalUserInfo alloc]
+                                                      initWithProviderID:nil
+                                                                 profile:nil
+                                                                username:nil
+                                                               isNewUser:response.isNewUser];
+                                              FIRAuthDataResult *result =
+                                                  user ? [[FIRAuthDataResult alloc]
+                                                                   initWithUser:user
+                                                             additionalUserInfo:additonalUserInfo]
+                                                       : nil;
+                                              if (completion) {
+                                                completion(result, error);
+                                              }
+                                            }];
+               }];
+}
+
+/** @fn internalCreateUserWithEmail:password:completion:
+    @brief Makes a backend request attempting to create a new Firebase user given an email address
+        and password.
+    @param email The email address used to create the new Firebase user.
+    @param password The password used to create the new Firebase user.
+    @param completion Optionally; a block which is invoked when the request finishes.
+ */
+- (void)internalCreateUserWithEmail:(NSString *)email
+                           password:(NSString *)password
+                         completion:(nullable FIRSignupNewUserCallback)completion {
+  FIRSignUpNewUserRequest *request =
+      [[FIRSignUpNewUserRequest alloc] initWithEmail:email
+                                            password:password
+                                         displayName:nil
+                                requestConfiguration:_requestConfiguration];
+  if (![request.password length]) {
+    completion(
+        nil, [FIRAuthErrorUtils weakPasswordErrorWithServerResponseReason:kMissingPasswordReason]);
+    return;
+  }
+  if (![request.email length]) {
+    completion(nil, [FIRAuthErrorUtils missingEmailErrorWithMessage:nil]);
+    return;
+  }
+  [FIRAuthBackend signUpNewUser:request callback:completion];
+}
+
+/** @fn internalSignInAnonymouslyWithCompletion:
+    @param completion A block which is invoked when the anonymous sign in request completes.
+ */
+- (void)internalSignInAnonymouslyWithCompletion:(FIRSignupNewUserCallback)completion {
+  FIRSignUpNewUserRequest *request =
+      [[FIRSignUpNewUserRequest alloc] initWithRequestConfiguration:_requestConfiguration];
+  [FIRAuthBackend signUpNewUser:request callback:completion];
+}
+
+/** @fn possiblyPostAuthStateChangeNotification
+    @brief Posts the auth state change notificaton if current user's token has been changed.
+ */
+- (void)possiblyPostAuthStateChangeNotification {
+  NSString *token = _currentUser.rawAccessToken;
+  if (_lastNotifiedUserToken == token ||
+      (token != nil && [_lastNotifiedUserToken isEqualToString:token])) {
+    return;
+  }
+  _lastNotifiedUserToken = token;
+  if (_autoRefreshTokens) {
+    // Shedule new refresh task after successful attempt.
+    [self scheduleAutoTokenRefresh];
+  }
+  NSMutableDictionary *internalNotificationParameters = [NSMutableDictionary dictionary];
+  if (self.app) {
+    internalNotificationParameters[FIRAuthStateDidChangeInternalNotificationAppKey] = self.app;
+  }
+  if (token.length) {
+    internalNotificationParameters[FIRAuthStateDidChangeInternalNotificationTokenKey] = token;
+  }
+  internalNotificationParameters[FIRAuthStateDidChangeInternalNotificationUIDKey] =
+      _currentUser.uid;
+  NSNotificationCenter *notifications = [NSNotificationCenter defaultCenter];
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [notifications postNotificationName:FIRAuthStateDidChangeInternalNotification
+                                 object:self
+                               userInfo:internalNotificationParameters];
+    [notifications postNotificationName:FIRAuthStateDidChangeNotification object:self];
+  });
+}
+
+- (BOOL)updateKeychainWithUser:(FIRUser *)user error:(NSError *_Nullable *_Nullable)error {
+  if (user != _currentUser) {
+    // No-op if the user is no longer signed in. This is not considered an error as we don't check
+    // whether the user is still current on other callbacks of user operations either.
+    return YES;
+  }
+  if ([self saveUser:user error:error]) {
+    [self possiblyPostAuthStateChangeNotification];
+    return YES;
+  }
+  return NO;
+}
+
+/** @fn setKeychainServiceNameForApp
+    @brief Sets the keychain service name global data for the particular app.
+    @param app The Firebase app to set keychain service name for.
+ */
++ (void)setKeychainServiceNameForApp:(FIRApp *)app {
+  @synchronized(self) {
+    gKeychainServiceNameForAppName[app.name] =
+        [@"firebase_auth_" stringByAppendingString:app.options.googleAppID];
+  }
+}
+
+/** @fn keychainServiceNameForAppName:
+    @brief Gets the keychain service name global data for the particular app by name.
+    @param appName The name of the Firebase app to get keychain service name for.
+ */
++ (NSString *)keychainServiceNameForAppName:(NSString *)appName {
+  @synchronized(self) {
+    return gKeychainServiceNameForAppName[appName];
+  }
+}
+
+/** @fn deleteKeychainServiceNameForAppName:
+    @brief Deletes the keychain service name global data for the particular app by name.
+    @param appName The name of the Firebase app to delete keychain service name for.
+ */
++ (void)deleteKeychainServiceNameForAppName:(NSString *)appName {
+  @synchronized(self) {
+    [gKeychainServiceNameForAppName removeObjectForKey:appName];
+  }
+}
+
+/** @fn scheduleAutoTokenRefreshWithDelay:
+    @brief Schedules a task to automatically refresh tokens on the current user. The token refresh
+        is scheduled 5 minutes before the  scheduled expiration time.
+    @remarks If the token expires in less than 5 minutes, schedule the token refresh immediately.
+ */
+- (void)scheduleAutoTokenRefresh {
+  NSTimeInterval tokenExpirationInterval =
+      [_currentUser.accessTokenExpirationDate timeIntervalSinceNow] - kTokenRefreshHeadStart;
+  [self scheduleAutoTokenRefreshWithDelay:MAX(tokenExpirationInterval, 0) retry:NO];
+}
+
+/** @fn scheduleAutoTokenRefreshWithDelay:
+    @brief Schedules a task to automatically refresh tokens on the current user.
+    @param delay The delay in seconds after which the token refresh task should be scheduled to be
+        executed.
+    @param retry Flag to determine whether the invocation is a retry attempt or not.
+ */
+- (void)scheduleAutoTokenRefreshWithDelay:(NSTimeInterval)delay retry:(BOOL)retry {
+  NSString *accessToken = _currentUser.rawAccessToken;
+  if (!accessToken) {
+    return;
+  }
+  if (retry) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000003",
+               @"Token auto-refresh re-scheduled in %02d:%02d "
+               @"because of error on previous refresh attempt.",
+               (int)ceil(delay) / 60, (int)ceil(delay) % 60);
+  } else {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000004",
+               @"Token auto-refresh scheduled in %02d:%02d for the new token.",
+               (int)ceil(delay) / 60, (int)ceil(delay) % 60);
+  }
+  _autoRefreshScheduled = YES;
+  __weak FIRAuth *weakSelf = self;
+  [[FIRAuthDispatcher sharedInstance]
+      dispatchAfterDelay:delay
+                   queue:FIRAuthGlobalWorkQueue()
+                    task:^(void) {
+                      FIRAuth *strongSelf = weakSelf;
+                      if (!strongSelf) {
+                        return;
+                      }
+                      if (![strongSelf->_currentUser.rawAccessToken isEqualToString:accessToken]) {
+                        // Another auto refresh must have been scheduled, so keep
+                        // _autoRefreshScheduled unchanged.
+                        return;
+                      }
+                      strongSelf->_autoRefreshScheduled = NO;
+                      if (strongSelf->_isAppInBackground) {
+                        return;
+                      }
+                      NSString *uid = strongSelf->_currentUser.uid;
+                      [strongSelf->_currentUser
+                          internalGetTokenForcingRefresh:YES
+                                                callback:^(NSString *_Nullable token,
+                                                           NSError *_Nullable error) {
+                                                  if (![strongSelf->_currentUser.uid
+                                                          isEqualToString:uid]) {
+                                                    return;
+                                                  }
+                                                  if (error) {
+                                                    // Kicks off exponential back off logic to retry
+                                                    // failed attempt. Starts with one minute delay
+                                                    // (60 seconds) if this is the first failed
+                                                    // attempt.
+                                                    NSTimeInterval rescheduleDelay;
+                                                    if (retry) {
+                                                      rescheduleDelay =
+                                                          MIN(delay * 2, kMaxWaitTimeForBackoff);
+                                                    } else {
+                                                      rescheduleDelay = 60;
+                                                    }
+                                                    [strongSelf
+                                                      scheduleAutoTokenRefreshWithDelay:
+                                                          rescheduleDelay
+                                                                                  retry:YES];
+                                                  }
+                                                }];
+                    }];
+}
+
+#pragma mark -
+
+/** @fn completeSignInWithTokenService:callback:
+    @brief Completes a sign-in flow once we have access and refresh tokens for the user.
+    @param accessToken The STS access token.
+    @param accessTokenExpirationDate The approximate expiration date of the access token.
+    @param refreshToken The STS refresh token.
+    @param anonymous Whether or not the user is anonymous.
+    @param callback Called when the user has been signed in or when an error occurred. Invoked
+        asynchronously on the global auth work queue in the future.
+ */
+- (void)completeSignInWithAccessToken:(nullable NSString *)accessToken
+            accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                         refreshToken:(nullable NSString *)refreshToken
+                            anonymous:(BOOL)anonymous
+                             callback:(FIRAuthResultCallback)callback {
+  [FIRUser retrieveUserWithAuth:self
+                    accessToken:accessToken
+      accessTokenExpirationDate:accessTokenExpirationDate
+                   refreshToken:refreshToken
+                      anonymous:anonymous
+                       callback:callback];
+}
+
+/** @fn signInFlowAuthResultCallbackByDecoratingCallback:
+    @brief Creates a FIRAuthResultCallback block which wraps another FIRAuthResultCallback; trying
+        to update the current user before forwarding it's invocations along to a subject block
+    @param callback Called when the user has been updated or when an error has occurred. Invoked
+        asynchronously on the main thread in the future.
+    @return Returns a block that updates the current user.
+    @remarks Typically invoked as part of the complete sign-in flow. For any other uses please
+        consider alternative ways of updating the current user.
+*/
+- (FIRAuthResultCallback)signInFlowAuthResultCallbackByDecoratingCallback:
+    (nullable FIRAuthResultCallback)callback {
+  return ^(FIRUser *_Nullable user, NSError *_Nullable error) {
+    if (error) {
+      if (callback) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          callback(nil, error);
+        });
+      }
+      return;
+    }
+    if (![self updateCurrentUser:user byForce:NO savingToDisk:YES error:&error]) {
+      if (callback) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          callback(nil, error);
+        });
+      }
+      return;
+    }
+    if (callback) {
+      dispatch_async(dispatch_get_main_queue(), ^{
+        callback(user, nil);
+      });
+    }
+  };
+}
+
+/** @fn signInFlowAuthDataResultCallbackByDecoratingCallback:
+    @brief Creates a FIRAuthDataResultCallback block which wraps another FIRAuthDataResultCallback;
+        trying to update the current user before forwarding it's invocations along to a subject
+        block.
+    @param callback Called when the user has been updated or when an error has occurred. Invoked
+        asynchronously on the main thread in the future.
+    @return Returns a block that updates the current user.
+    @remarks Typically invoked as part of the complete sign-in flow. For any other uses please
+        consider alternative ways of updating the current user.
+*/
+- (FIRAuthDataResultCallback)signInFlowAuthDataResultCallbackByDecoratingCallback:
+    (nullable FIRAuthDataResultCallback)callback {
+  return ^(FIRAuthDataResult *_Nullable authResult, NSError *_Nullable error) {
+    if (error) {
+      if (callback) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          callback(nil, error);
+        });
+      }
+      return;
+    }
+    if (![self updateCurrentUser:authResult.user byForce:NO savingToDisk:YES error:&error]) {
+      if (callback) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+          callback(nil, error);
+        });
+      }
+      return;
+    }
+    if (callback) {
+      dispatch_async(dispatch_get_main_queue(), ^{
+        callback(authResult, nil);
+      });
+    }
+  };
+}
+
+#pragma mark - User-Related Methods
+
+/** @fn updateCurrentUser:byForce:savingToDisk:error:
+    @brief Update the current user; initializing the user's internal properties correctly, and
+        optionally saving the user to disk.
+    @remarks This method is called during: sign in and sign out events, as well as during class
+        initialization time. The only time the saveToDisk parameter should be set to NO is during
+        class initialization time because the user was just read from disk.
+    @param user The user to use as the current user (including nil, which is passed at sign out
+        time.)
+    @param saveToDisk Indicates the method should persist the user data to disk.
+ */
+- (BOOL)updateCurrentUser:(nullable FIRUser *)user
+                  byForce:(BOOL)force
+             savingToDisk:(BOOL)saveToDisk
+                    error:(NSError *_Nullable *_Nullable)error {
+  if (user == _currentUser) {
+    [self possiblyPostAuthStateChangeNotification];
+    return YES;
+  }
+  if (user) {
+    if ((user.tenantID || self.tenantID) && ![self.tenantID isEqualToString:user.tenantID]) {
+      if (error) {
+        *error = [FIRAuthErrorUtils tenantIDMismatchError];
+      }
+      return NO;
+    }
+  }
+
+  BOOL success = YES;
+  if (saveToDisk) {
+    success = [self saveUser:user error:error];
+  }
+  if (success || force) {
+    _currentUser = user;
+    [self possiblyPostAuthStateChangeNotification];
+  }
+  return success;
+}
+
+/** @fn saveUser:error:
+    @brief Persists user.
+    @param user The user to save.
+    @param outError Return value for any error which occurs.
+    @return @YES on success, @NO otherwise.
+ */
+- (BOOL)saveUser:(nullable FIRUser *)user error:(NSError *_Nullable *_Nullable)outError {
+  BOOL success;
+
+  if (!self.userAccessGroup) {
+    NSString *userKey = [NSString stringWithFormat:kUserKey, _firebaseAppName];
+    if (!user) {
+      success = [_keychainServices removeDataForKey:userKey error:outError];
+    } else {
+#if TARGET_OS_WATCH
+      NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initRequiringSecureCoding:false];
+#else
+      // Encode the user object.
+      NSMutableData *archiveData = [NSMutableData data];
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      NSKeyedArchiver *archiver =
+          [[NSKeyedArchiver alloc] initForWritingWithMutableData:archiveData];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+      [archiver encodeObject:user forKey:userKey];
+      [archiver finishEncoding];
+
+#if TARGET_OS_WATCH
+      NSData *archiveData = archiver.encodedData;
+#endif  // TARGET_OS_WATCH
+
+      // Save the user object's encoded value.
+      success = [_keychainServices setData:archiveData forKey:userKey error:outError];
+    }
+  } else {
+    if (!user) {
+      success =
+          [self.storedUserManager removeStoredUserForAccessGroup:self.userAccessGroup
+                                     shareAuthStateAcrossDevices:self.shareAuthStateAcrossDevices
+                                               projectIdentifier:self.app.options.APIKey
+                                                           error:outError];
+    } else {
+      success = [self.storedUserManager setStoredUser:user
+                                       forAccessGroup:self.userAccessGroup
+                          shareAuthStateAcrossDevices:self.shareAuthStateAcrossDevices
+                                    projectIdentifier:self.app.options.APIKey
+                                                error:outError];
+    }
+  }
+
+  return success;
+}
+
+/** @fn getUser:error:
+    @brief Retrieves the saved user associated, if one exists, from the keychain.
+    @param outUser An out parameter which is populated with the saved user, if one exists.
+    @param error Return value for any error which occurs.
+    @return YES if the operation was a success (irrespective of whether or not a saved user existed
+        for the given @c firebaseAppId,) NO if an error occurred.
+ */
+- (BOOL)getUser:(FIRUser *_Nullable *)outUser error:(NSError *_Nullable *_Nullable)error {
+  if (!self.userAccessGroup) {
+    NSString *userKey = [NSString stringWithFormat:kUserKey, _firebaseAppName];
+
+    NSError *keychainError;
+    NSData *encodedUserData = [_keychainServices dataForKey:userKey error:&keychainError];
+    if (keychainError) {
+      if (error) {
+        *error = keychainError;
+      }
+      return NO;
+    }
+    if (!encodedUserData) {
+      *outUser = nil;
+      return YES;
+    }
+#if TARGET_OS_WATCH
+    NSKeyedUnarchiver *unarchiver =
+        [[NSKeyedUnarchiver alloc] initForReadingFromData:encodedUserData error:error];
+    if (error && *error) {
+      return NO;
+    }
+#else
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    NSKeyedUnarchiver *unarchiver =
+        [[NSKeyedUnarchiver alloc] initForReadingWithData:encodedUserData];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+    FIRUser *user = [unarchiver decodeObjectOfClass:[FIRUser class] forKey:userKey];
+    user.auth = self;
+    *outUser = user;
+
+    return YES;
+  } else {
+    FIRUser *user =
+        [self.storedUserManager getStoredUserForAccessGroup:self.userAccessGroup
+                                shareAuthStateAcrossDevices:self.shareAuthStateAcrossDevices
+                                          projectIdentifier:self.app.options.APIKey
+                                                      error:error];
+    user.auth = self;
+    *outUser = user;
+    if (user) {
+      return YES;
+    } else {
+      if (error && *error) {
+        return NO;
+      } else {
+        return YES;
+      }
+    }
+  }
+}
+
+#pragma mark - Interoperability
+
++ (nonnull NSArray<FIRComponent *> *)componentsToRegister {
+  FIRComponentCreationBlock authCreationBlock =
+      ^id _Nullable(FIRComponentContainer *_Nonnull container, BOOL *_Nonnull isCacheable) {
+    *isCacheable = YES;
+    return [[FIRAuth alloc] initWithApp:container.app];
+  };
+  FIRComponent *authInterop = [FIRComponent componentWithProtocol:@protocol(FIRAuthInterop)
+                                              instantiationTiming:FIRInstantiationTimingAlwaysEager
+                                                     dependencies:@[]
+                                                    creationBlock:authCreationBlock];
+  return @[ authInterop ];
+}
+
+#pragma mark - FIRComponentLifecycleMaintainer
+
+- (void)appWillBeDeleted:(nonnull FIRApp *)app {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    // This doesn't stop any request already issued, see b/27704535 .
+    NSString *keychainServiceName = [FIRAuth keychainServiceNameForAppName:app.name];
+    if (keychainServiceName) {
+      [[self class] deleteKeychainServiceNameForAppName:app.name];
+      FIRAuthKeychainServices *keychain =
+          [[FIRAuthKeychainServices alloc] initWithService:keychainServiceName];
+      NSString *userKey = [NSString stringWithFormat:kUserKey, app.name];
+      [keychain removeDataForKey:userKey error:NULL];
+    }
+    dispatch_async(dispatch_get_main_queue(), ^{
+      // TODO: Move over to fire an event instead, once ready.
+      [[NSNotificationCenter defaultCenter] postNotificationName:FIRAuthStateDidChangeNotification
+                                                          object:nil];
+    });
+  });
+}
+
+#pragma mark - FIRAuthInterop
+
+- (void)getTokenForcingRefresh:(BOOL)forceRefresh withCallback:(FIRTokenCallback)callback {
+  __weak FIRAuth *weakSelf = self;
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuth *strongSelf = weakSelf;
+    // Enable token auto-refresh if not aleady enabled.
+    if (strongSelf && !strongSelf->_autoRefreshTokens) {
+      FIRLogInfo(kFIRLoggerAuth, @"I-AUT000002", @"Token auto-refresh enabled.");
+      strongSelf->_autoRefreshTokens = YES;
+      [strongSelf scheduleAutoTokenRefresh];
+
+#if TARGET_OS_IOS || TARGET_OS_TV  // TODO: Is a similar mechanism needed on macOS?
+      strongSelf->_applicationDidBecomeActiveObserver = [[NSNotificationCenter defaultCenter]
+          addObserverForName:UIApplicationDidBecomeActiveNotification
+                      object:nil
+                       queue:nil
+                  usingBlock:^(NSNotification *notification) {
+                    FIRAuth *strongSelf = weakSelf;
+                    if (strongSelf) {
+                      strongSelf->_isAppInBackground = NO;
+                      if (!strongSelf->_autoRefreshScheduled) {
+                        [weakSelf scheduleAutoTokenRefresh];
+                      }
+                    }
+                  }];
+      strongSelf->_applicationDidEnterBackgroundObserver = [[NSNotificationCenter defaultCenter]
+          addObserverForName:UIApplicationDidEnterBackgroundNotification
+                      object:nil
+                       queue:nil
+                  usingBlock:^(NSNotification *notification) {
+                    FIRAuth *strongSelf = weakSelf;
+                    if (strongSelf) {
+                      strongSelf->_isAppInBackground = YES;
+                    }
+                  }];
+#endif
+    }
+    // Call back with 'nil' if there is no current user.
+    if (!strongSelf || !strongSelf->_currentUser) {
+      dispatch_async(dispatch_get_main_queue(), ^{
+        callback(nil, nil);
+      });
+      return;
+    }
+    // Call back with current user token.
+    [strongSelf->_currentUser
+      internalGetTokenForcingRefresh:forceRefresh
+                            callback:^(NSString *_Nullable token, NSError *_Nullable error) {
+                              dispatch_async(dispatch_get_main_queue(), ^{
+                                callback(token, error);
+                              });
+                            }];
+  });
+}
+
+- (nullable NSString *)getUserID {
+  return _currentUser.uid;
+}
+
+#pragma mark - Keychain sharing
+
+- (BOOL)internalUseUserAccessGroup:(NSString *_Nullable)accessGroup
+                             error:(NSError *_Nullable *_Nullable)outError {
+  BOOL success;
+  success = [self.storedUserManager setStoredUserAccessGroup:accessGroup error:outError];
+  if (!success) {
+    return NO;
+  }
+
+  FIRUser *user = [self getStoredUserForAccessGroup:accessGroup error:outError];
+  if (!user && outError && *outError) {
+    return NO;
+  }
+  success = [self updateCurrentUser:user byForce:NO savingToDisk:NO error:outError];
+  if (!success) {
+    return NO;
+  }
+
+  if (_userAccessGroup == nil && accessGroup != nil) {
+    NSString *userKey = [NSString stringWithFormat:kUserKey, _firebaseAppName];
+    [_keychainServices removeDataForKey:userKey error:outError];
+  }
+  _userAccessGroup = accessGroup;
+  self->_lastNotifiedUserToken = user.rawAccessToken;
+
+  return YES;
+}
+
+- (BOOL)useUserAccessGroup:(NSString *_Nullable)accessGroup
+                     error:(NSError *_Nullable *_Nullable)outError {
+  // self.storedUserManager is initialized asynchronously. Make sure it is done.
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+                });
+  return [self internalUseUserAccessGroup:accessGroup error:outError];
+}
+
+- (nullable FIRUser *)getStoredUserForAccessGroup:(NSString *_Nullable)accessGroup
+                                            error:(NSError *_Nullable *_Nullable)outError {
+  FIRUser *user;
+  if (!accessGroup) {
+    NSString *userKey = [NSString stringWithFormat:kUserKey, _firebaseAppName];
+    NSData *encodedUserData = [_keychainServices dataForKey:userKey error:outError];
+    if (!encodedUserData) {
+      return nil;
+    }
+
+#if TARGET_OS_WATCH
+    NSKeyedUnarchiver *unarchiver =
+        [[NSKeyedUnarchiver alloc] initForReadingFromData:encodedUserData error:outError];
+    if (outError && *outError) {
+      return nil;
+    }
+#else
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    NSKeyedUnarchiver *unarchiver =
+        [[NSKeyedUnarchiver alloc] initForReadingWithData:encodedUserData];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+    user = [unarchiver decodeObjectOfClass:[FIRUser class] forKey:userKey];
+  } else {
+    user = [self.storedUserManager getStoredUserForAccessGroup:accessGroup
+                                   shareAuthStateAcrossDevices:self.shareAuthStateAcrossDevices
+                                             projectIdentifier:self.app.options.APIKey
+                                                         error:outError];
+  }
+
+  user.auth = self;
+  return user;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult.m
new file mode 100644
index 0000000..dc8d035
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult.m	
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthDataResult
+
+/** @var kAdditionalUserInfoCodingKey
+    @brief The key used to encode the additionalUserInfo property for NSSecureCoding.
+ */
+static NSString *const kAdditionalUserInfoCodingKey = @"additionalUserInfo";
+
+/** @var kUserCodingKey
+    @brief The key used to encode the user property for NSSecureCoding.
+ */
+static NSString *const kUserCodingKey = @"user";
+
+/** @var kCredentialCodingKey
+    @brief The key used to encode the credential for NSSecureCoding.
+ */
+static NSString *const kCredentialCodingKey = @"credential";
+
+- (nullable instancetype)initWithUser:(FIRUser *)user
+                   additionalUserInfo:(nullable FIRAdditionalUserInfo *)additionalUserInfo {
+  return [self initWithUser:user additionalUserInfo:additionalUserInfo credential:nil];
+}
+
+- (nullable instancetype)initWithUser:(FIRUser *)user
+                   additionalUserInfo:(nullable FIRAdditionalUserInfo *)additionalUserInfo
+                           credential:(nullable FIROAuthCredential *)credential {
+  self = [super init];
+  if (self) {
+    _additionalUserInfo = additionalUserInfo;
+    _user = user;
+    _credential = credential;
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  FIRUser *user = [aDecoder decodeObjectOfClass:[FIRUser class] forKey:kUserCodingKey];
+  FIRAdditionalUserInfo *additionalUserInfo =
+      [aDecoder decodeObjectOfClass:[FIRAdditionalUserInfo class]
+                             forKey:kAdditionalUserInfoCodingKey];
+  FIROAuthCredential *credential = [aDecoder decodeObjectOfClass:[FIROAuthCredential class]
+                                                          forKey:kCredentialCodingKey];
+  return [self initWithUser:user additionalUserInfo:additionalUserInfo credential:credential];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_user forKey:kUserCodingKey];
+  [aCoder encodeObject:_additionalUserInfo forKey:kAdditionalUserInfoCodingKey];
+  [aCoder encodeObject:_credential forKey:kCredentialCodingKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h
new file mode 100644
index 0000000..ff5f4c2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthDataResult.h"
+
+@class FIROAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthDataResult () <NSSecureCoding>
+
+/** @fn initWithUser:additionalUserInfo:
+    @brief Designated initializer.
+    @param user The signed in user reference.
+    @param additionalUserInfo The additional user info if available.
+ */
+- (nullable instancetype)initWithUser:(FIRUser *)user
+                   additionalUserInfo:(nullable FIRAdditionalUserInfo *)additionalUserInfo;
+
+/** @fn initWithUser:additionalUserInfo:
+    @brief Designated initializer.
+    @param user The signed in user reference.
+    @param additionalUserInfo The additional user info if available.
+    @param credential The updated OAuth credential if available.
+ */
+- (nullable instancetype)initWithUser:(FIRUser *)user
+                   additionalUserInfo:(nullable FIRAdditionalUserInfo *)additionalUserInfo
+                           credential:(nullable FIROAuthCredential *)credential
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.h
new file mode 100644
index 0000000..2c5839b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.h	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthDispatcherImplBlock
+    @brief The type of block which can be set as the implementation for @c
+        dispatchAfterDelay:queue:callback: .
+
+    @param delay The delay in seconds after which the task will be scheduled to execute.
+    @param queue The dispatch queue on which the task will be submitted.
+    @param task The task (block) to be scheduled for future execution.
+ */
+typedef void (^FIRAuthDispatcherImplBlock)(NSTimeInterval delay,
+                                           dispatch_queue_t queue,
+                                           void (^task)(void));
+
+/** @class FIRAuthDispatchAfter
+    @brief A utility class used to facilitate scheduling tasks to be executed in the future.
+ */
+@interface FIRAuthDispatcher : NSObject
+
+/** @property dispatchAfterImplementation
+    @brief Allows custom implementation of dispatchAfterDelay:queue:callback:.
+    @remarks Set to nil to restore default implementation.
+ */
+@property(nonatomic, nullable, copy) FIRAuthDispatcherImplBlock dispatchAfterImplementation;
+
+/** @fn dispatchAfterDelay:queue:callback:
+    @brief Schedules task in the future after a specified delay.
+
+    @param delay The delay in seconds after which the task will be scheduled to execute.
+    @param queue The dispatch queue on which the task will be submitted.
+    @param task The task (block) to be scheduled for future execution.
+ */
+- (void)dispatchAfterDelay:(NSTimeInterval)delay
+                     queue:(dispatch_queue_t)queue
+                      task:(void (^)(void))task;
+
+/** @fn sharedInstance
+    @brief Gets the shared instance of this class.
+    @returns The shared instance of this clss
+ */
++ (instancetype)sharedInstance;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.m
new file mode 100644
index 0000000..e5e32c3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthDispatcher.m	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDispatcher.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthDispatcher
+
+@synthesize dispatchAfterImplementation = _dispatchAfterImplementation;
+
++ (instancetype)sharedInstance {
+  static dispatch_once_t onceToken;
+  static FIRAuthDispatcher *sharedInstance;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[self alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (void)dispatchAfterDelay:(NSTimeInterval)delay
+                     queue:(dispatch_queue_t)queue
+                      task:(void (^)(void))task {
+  if (_dispatchAfterImplementation) {
+    _dispatchAfterImplementation(delay, queue, task);
+    return;
+  }
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, delay * NSEC_PER_SEC), queue, task);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h
new file mode 100644
index 0000000..55bb1a7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @fn FIRAuthGlobalWorkQueue
+    @brief Retrieves the global serial work queue for Firebase Auth.
+    @return The global serial dispatch queue.
+    @remarks To ensure thread safety, all auth code must be executed in either this global work
+        queue, or a serial queue that has its target queue set to this work queue. All public method
+        implementations that may involve contested code shall dispatch to this work queue as the
+        first thing they do.
+ */
+extern dispatch_queue_t FIRAuthGlobalWorkQueue(void);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.m
new file mode 100644
index 0000000..bfe263a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.m	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+dispatch_queue_t FIRAuthGlobalWorkQueue() {
+  static dispatch_once_t once;
+  static dispatch_queue_t queue;
+  dispatch_once(&once, ^{
+    queue = dispatch_queue_create("com.google.firebase.auth.globalWorkQueue", NULL);
+  });
+  return queue;
+}
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthOperationType.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthOperationType.h
new file mode 100644
index 0000000..62d6cd1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthOperationType.h	
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief Indicates the type of operation performed for RPCs that support the operation
+        parameter.
+ */
+typedef NS_ENUM(NSInteger, FIRAuthOperationType) {
+  /** Indicates that the operation type is uspecified.
+   */
+  FIRAuthOperationTypeUnspecified = 0,
+
+  /** Indicates that the operation type is sign in or sign up.
+   */
+  FIRAuthOperationTypeSignUpOrSignIn = 1,
+
+  /** Indicates that the operation type is reauthentication.
+   */
+  FIRAuthOperationTypeReauth = 2,
+
+  /** Indicates that the operation type is update.
+   */
+  FIRAuthOperationTypeUpdate = 3,
+
+  /** Indicates that the operation type is link.
+   */
+  FIRAuthOperationTypeLink = 4,
+};
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h
new file mode 100644
index 0000000..cdae046
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthSerialTaskCompletionBlock
+    @brief The type of method a @c FIRAuthSerialTask must call when it is complete.
+ */
+typedef void (^FIRAuthSerialTaskCompletionBlock)(void);
+
+/** @typedef FIRAuthSerialTask
+    @brief Represents a unit of work submitted to a task queue.
+    @param complete The task MUST call the complete method when done.
+ */
+typedef void (^FIRAuthSerialTask)(FIRAuthSerialTaskCompletionBlock complete);
+
+/** @class FIRAuthSerialTaskQueue
+    @brief An easy to use serial task queue which supports a callback-based completion notification
+        system for easy asyncronous call chaining.
+ */
+@interface FIRAuthSerialTaskQueue : NSObject
+
+/** @fn enqueueTask:
+    @brief Enqueues a task for serial execution in the queue.
+    @remarks The task MUST call the complete method when done. This method is thread-safe.
+        The task block won't be executed concurrently with any other blocks in other task queues or
+        the global work queue as returned by @c FIRAuthGlobalWorkQueue , but an uncompleted task
+        (e.g. task block finished executation before complete method is called at a later time)
+        does not affect other task queues or the global work queue.
+ */
+- (void)enqueueTask:(FIRAuthSerialTask)task;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.m
new file mode 100644
index 0000000..4bded78
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.m	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthSerialTaskQueue {
+  /** @var _dispatchQueue
+      @brief The asyncronous dispatch queue into which tasks are enqueued and processed
+          serially.
+   */
+  dispatch_queue_t _dispatchQueue;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _dispatchQueue = dispatch_queue_create("com.google.firebase.auth.serialTaskQueue", NULL);
+    dispatch_set_target_queue(_dispatchQueue, FIRAuthGlobalWorkQueue());
+  }
+  return self;
+}
+
+- (void)enqueueTask:(FIRAuthSerialTask)task {
+  // This dispatch queue will run tasks serially in FIFO order, as long as it's not suspended.
+  dispatch_async(self->_dispatchQueue, ^{
+    // But as soon as a task is started, stop other tasks from running until the task calls it's
+    // completion handler, which allows the queue to resume processing of tasks. This allows the
+    // task to perform other asyncronous actions on other dispatch queues and "get back to us" when
+    // all of their sub-tasks are complete.
+    dispatch_suspend(self->_dispatchQueue);
+    task(^{
+      dispatch_resume(self->_dispatchQueue);
+    });
+  });
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSettings.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSettings.m
new file mode 100644
index 0000000..8715897
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthSettings.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthSettings.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthSettings
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _appVerificationDisabledForTesting = NO;
+  }
+  return self;
+}
+
+- (instancetype)copyWithZone:(NSZone *__unused _Nullable)zone {
+  // Auth settings are mutable, so always return a copy.
+  FIRAuthSettings *newSettings = [[FIRAuthSettings alloc] init];
+  newSettings.appVerificationDisabledForTesting = self.isAppVerificationDisabledForTesting;
+  return newSettings;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult.m
new file mode 100644
index 0000000..fd857e3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult.m	
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthTokenResult_Internal.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kExpirationDateKey
+    @brief The key used to encode the expirationDate property for NSSecureCoding.
+ */
+static NSString *const kExpirationDateKey = @"expiratinDate";
+
+/** @var kTokenKey
+    @brief The key used to encode the token property for NSSecureCoding.
+ */
+static NSString *const kTokenKey = @"token";
+
+/** @var kAuthDateKey
+    @brief The key used to encode the authDate property for NSSecureCoding.
+ */
+static NSString *const kAuthDateKey = @"authDate";
+
+/** @var kIssuedDateKey
+    @brief The key used to encode the issuedDate property for NSSecureCoding.
+ */
+static NSString *const kIssuedDateKey = @"issuedDate";
+
+/** @var kSignInProviderKey
+    @brief The key used to encode the signInProvider property for NSSecureCoding.
+ */
+static NSString *const kSignInProviderKey = @"signInProvider";
+
+/** @var kSignInSecondFactorKey
+ @brief The key used to encode the signInSecondFactor property for NSSecureCoding.
+ */
+static NSString *const kSignInSecondFactorKey = @"signInSecondFactor";
+
+/** @var kClaimsKey
+    @brief The key used to encode the claims property for NSSecureCoding.
+ */
+static NSString *const kClaimsKey = @"claims";
+
+@implementation FIRAuthTokenResult
+
+- (instancetype)initWithToken:(NSString *)token
+               expirationDate:(NSDate *)expirationDate
+                     authDate:(NSDate *)authDate
+                 issuedAtDate:(NSDate *)issuedAtDate
+               signInProvider:(NSString *)signInProvider
+           signInSecondFactor:(NSString *)signInSecondFactor
+                       claims:(NSDictionary *)claims {
+  self = [super init];
+  if (self) {
+    _token = token;
+    _expirationDate = expirationDate;
+    _authDate = authDate;
+    _issuedAtDate = issuedAtDate;
+    _signInProvider = signInProvider;
+    _signInSecondFactor = signInSecondFactor;
+    _claims = claims;
+  }
+  return self;
+}
+
++ (nullable FIRAuthTokenResult *)tokenResultWithToken:(NSString *)token {
+  NSArray *tokenStringArray = [token componentsSeparatedByString:@"."];
+
+  // The JWT should have three parts, though we only use the second in this method.
+  if (tokenStringArray.count != 3) {
+    return nil;
+  }
+
+  // The token payload is always the second index of the array.
+  NSString *IDToken = tokenStringArray[1];
+
+  // Convert the base64URL encoded string to a base64 encoded string.
+  // Replace "_" with "/"
+  NSMutableString *tokenPayload = [[IDToken stringByReplacingOccurrencesOfString:@"_"
+                                                                      withString:@"/"] mutableCopy];
+
+  // Replace "-" with "+"
+  [tokenPayload replaceOccurrencesOfString:@"-"
+                                withString:@"+"
+                                   options:kNilOptions
+                                     range:NSMakeRange(0, tokenPayload.length)];
+
+  // Pad the token payload with "=" signs if the payload's length is not a multiple of 4.
+  while ((tokenPayload.length % 4) != 0) {
+    [tokenPayload appendFormat:@"="];
+  }
+  NSData *decodedTokenPayloadData =
+      [[NSData alloc] initWithBase64EncodedString:tokenPayload
+                                          options:NSDataBase64DecodingIgnoreUnknownCharacters];
+  if (!decodedTokenPayloadData) {
+    return nil;
+  }
+  NSError *jsonError = nil;
+  NSJSONReadingOptions options = NSJSONReadingMutableContainers | NSJSONReadingAllowFragments;
+  NSDictionary *tokenPayloadDictionary =
+      [NSJSONSerialization JSONObjectWithData:decodedTokenPayloadData
+                                      options:options
+                                        error:&jsonError];
+  if (jsonError != nil) {
+    return nil;
+  }
+
+  if (!tokenPayloadDictionary) {
+    return nil;
+  }
+
+  // These are dates since 00:00:00 January 1 1970, as described by the Terminology section in
+  // the JWT spec. https://tools.ietf.org/html/rfc7519
+  NSDate *expirationDate =
+      [NSDate dateWithTimeIntervalSince1970:[tokenPayloadDictionary[@"exp"] doubleValue]];
+  NSDate *authDate =
+      [NSDate dateWithTimeIntervalSince1970:[tokenPayloadDictionary[@"auth_time"] doubleValue]];
+  NSDate *issuedAtDate =
+      [NSDate dateWithTimeIntervalSince1970:[tokenPayloadDictionary[@"iat"] doubleValue]];
+
+  NSDictionary *firebaseTokenPayloadDictionary = tokenPayloadDictionary[@"firebase"];
+  NSString *signInProvider = firebaseTokenPayloadDictionary[@"sign_in_provider"];
+  NSString *signInSecondFactor = firebaseTokenPayloadDictionary[@"sign_in_second_factor"];
+
+  FIRAuthTokenResult *tokenResult =
+      [[FIRAuthTokenResult alloc] initWithToken:token
+                                 expirationDate:expirationDate
+                                       authDate:authDate
+                                   issuedAtDate:issuedAtDate
+                                 signInProvider:signInProvider
+                             signInSecondFactor:signInSecondFactor
+                                         claims:tokenPayloadDictionary];
+  return tokenResult;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *token = [aDecoder decodeObjectOfClass:[NSDate class] forKey:kTokenKey];
+  return [FIRAuthTokenResult tokenResultWithToken:token];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_token forKey:kTokenKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult_Internal.h
new file mode 100644
index 0000000..6a5f7ad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuthTokenResult_Internal.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthTokenResult.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @extension FIRAuthAPNSTokenResult
+    @brief An internal class used to expose internal methods of FIRAuthAPNSTokenResult.
+ */
+@interface FIRAuthTokenResult () <NSSecureCoding>
+
+/** @fn tokenResultWithToken:
+    @brief Parse a token string to a structured token.
+    @param token The token string to parse.
+    @return A structured token result.
+*/
++ (nullable FIRAuthTokenResult *)tokenResultWithToken:(NSString *)token;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth_Internal.h
new file mode 100644
index 0000000..718f3eb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Auth/FIRAuth_Internal.h	
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "Interop/Auth/Public/FIRAuthInterop.h"
+
+@class FIRAuthRequestConfiguration;
+@class FIRAuthURLPresenter;
+
+#if TARGET_OS_IOS
+@class FIRAuthAPNSTokenManager;
+@class FIRAuthAppCredentialManager;
+@class FIRAuthNotificationManager;
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuth () <FIRAuthInterop>
+
+/** @property requestConfiguration
+    @brief The configuration object comprising of paramters needed to make a request to Firebase
+        Auth's backend.
+ */
+@property(nonatomic, copy, readonly) FIRAuthRequestConfiguration *requestConfiguration;
+
+#if TARGET_OS_IOS
+
+/** @property tokenManager
+    @brief The manager for APNs tokens used by phone number auth.
+ */
+@property(nonatomic, strong, readonly) FIRAuthAPNSTokenManager *tokenManager;
+
+/** @property appCredentailManager
+    @brief The manager for app credentials used by phone number auth.
+ */
+@property(nonatomic, strong, readonly) FIRAuthAppCredentialManager *appCredentialManager;
+
+/** @property notificationManager
+    @brief The manager for remote notifications used by phone number auth.
+ */
+@property(nonatomic, strong, readonly) FIRAuthNotificationManager *notificationManager;
+
+#endif  // TARGET_OS_IOS
+
+/** @property authURLPresenter
+    @brief An object that takes care of presenting URLs via the auth instance.
+ */
+@property(nonatomic, strong, readonly) FIRAuthURLPresenter *authURLPresenter;
+
+/** @fn initWithAPIKey:appName:
+    @brief Designated initializer.
+    @param APIKey The Google Developers Console API key for making requests from your app.
+    @param appName The name property of the previously created @c FIRApp instance.
+ */
+- (nullable instancetype)initWithAPIKey:(NSString *)APIKey
+                                appName:(NSString *)appName NS_DESIGNATED_INITIALIZER;
+
+/** @fn getUserID
+    @brief Gets the identifier of the current user, if any.
+    @return The identifier of the current user, or nil if there is no current user.
+ */
+- (nullable NSString *)getUserID;
+
+/** @fn updateKeychainWithUser:error:
+    @brief Updates the keychain for the given user.
+    @param user The user to be updated.
+    @param error The error caused the method to fail if the method returns NO.
+    @return Whether updating keychain has succeeded or not.
+    @remarks Called by @c FIRUser when user info or token changes occur.
+ */
+- (BOOL)updateKeychainWithUser:(FIRUser *)user error:(NSError *_Nullable *_Nullable)error;
+
+/** @fn internalSignInWithCredential:callback:
+    @brief Convenience method for @c internalSignInAndRetrieveDataWithCredential:callback:
+        This method doesn't return additional identity provider data.
+*/
+- (void)internalSignInWithCredential:(FIRAuthCredential *)credential
+                            callback:(FIRAuthResultCallback)callback;
+
+/** @fn internalSignInAndRetrieveDataWithCredential:callback:
+    @brief Asynchronously signs in Firebase with the given 3rd party credentials (e.g. a Facebook
+        login Access Token, a Google ID Token/Access Token pair, etc.) and returns additional
+        identity provider data.
+    @param credential The credential supplied by the IdP.
+    @param isReauthentication Indicates whether or not the current invocation originated from an
+        attempt to reauthenticate.
+    @param callback A block which is invoked when the sign in finishes (or is cancelled.) Invoked
+        asynchronously on the auth global work queue in the future.
+    @remarks This is the internal counterpart of this method, which uses a callback that does not
+        update the current user.
+ */
+- (void)internalSignInAndRetrieveDataWithCredential:(FIRAuthCredential *)credential
+                                 isReauthentication:(BOOL)isReauthentication
+                                           callback:(nullable FIRAuthDataResultCallback)callback;
+
+/** @fn signOutByForceWithUserID:error:
+    @brief Signs out the current user.
+    @param userID The ID of the user to force sign out.
+    @param error An optional out parameter for error results.
+    @return @YES when the sign out request was successful. @NO otherwise.
+ */
+- (BOOL)signOutByForceWithUserID:(NSString *)userID error:(NSError *_Nullable *_Nullable)error;
+
+/** @fn completeSignInWithTokenService:callback:
+    @brief Completes a sign-in flow once we have access and refresh tokens for the user.
+    @param accessToken The STS access token.
+    @param accessTokenExpirationDate The approximate expiration date of the access token.
+    @param refreshToken The STS refresh token.
+    @param anonymous Whether or not the user is anonymous.
+    @param callback Called when the user has been signed in or when an error occurred. Invoked
+        asynchronously on the global auth work queue in the future.
+*/
+- (void)completeSignInWithAccessToken:(nullable NSString *)accessToken
+            accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                         refreshToken:(nullable NSString *)refreshToken
+                            anonymous:(BOOL)anonymous
+                             callback:(FIRAuthResultCallback)callback;
+
+/** @fn signInFlowAuthResultCallbackByDecoratingCallback:
+    @brief Creates a FIRAuthResultCallback block which wraps another FIRAuthResultCallback; trying
+        to update the current user before forwarding it's invocations along to a subject block
+    @param callback Called when the user has been updated or when an error has occurred. Invoked
+        asynchronously on the main thread in the future.
+    @return Returns a block that updates the current user.
+    @remarks Typically invoked as part of the complete sign-in flow. For any other uses please
+        consider alternative ways of updating the current user.
+*/
+- (FIRAuthDataResultCallback)signInFlowAuthDataResultCallbackByDecoratingCallback:
+    (nullable FIRAuthDataResultCallback)callback;
+
+@end
+
+/// Logger Service String
+
+extern FIRLoggerService kFIRLoggerAuth;
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailAuthProvider.m
new file mode 100644
index 0000000..731e79b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailAuthProvider.m	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIREmailAuthProvider
+
+- (instancetype)init {
+  @throw [NSException exceptionWithName:@"Attempt to call unavailable initializer."
+                                 reason:@"This class is not meant to be initialized."
+                               userInfo:nil];
+}
+
++ (FIRAuthCredential *)credentialWithEmail:(NSString *)email password:(NSString *)password {
+  return [[FIREmailPasswordAuthCredential alloc] initWithEmail:email password:password];
+}
+
++ (FIRAuthCredential *)credentialWithEmail:(NSString *)email link:(NSString *)link {
+  return [[FIREmailPasswordAuthCredential alloc] initWithEmail:email link:link];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h
new file mode 100644
index 0000000..df683e6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIREmailPasswordAuthCredential
+    @brief Internal implementation of FIRAuthCredential for Email/Password credentials.
+ */
+@interface FIREmailPasswordAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @property email
+    @brief The user's email address.
+ */
+@property(nonatomic, readonly) NSString *email;
+
+/** @property password
+    @brief The user's password.
+ */
+@property(nonatomic, readonly) NSString *password;
+
+/** @property link
+    @brief The email sign-in link.
+ */
+@property(nonatomic, readonly) NSString *link;
+
+/** @fn initWithEmail:password:
+    @brief Designated initializer.
+    @param email The user's email address.
+    @param password The user's password.
+ */
+- (nullable instancetype)initWithEmail:(NSString *)email
+                              password:(NSString *)password NS_DESIGNATED_INITIALIZER;
+
+/** @fn initWithEmail:link:
+    @brief Designated initializer.
+    @param email The user's email address.
+    @param link The email sign-in link.
+ */
+- (nullable instancetype)initWithEmail:(NSString *)email
+                                  link:(NSString *)link NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.m
new file mode 100644
index 0000000..a427f5d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIREmailPasswordAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIREmailPasswordAuthCredential
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithEmail:(NSString *)email password:(NSString *)password {
+  self = [super initWithProvider:FIREmailAuthProviderID];
+  if (self) {
+    _email = [email copy];
+    _password = [password copy];
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithEmail:(NSString *)email link:(NSString *)link {
+  self = [super initWithProvider:FIREmailAuthProviderID];
+  if (self) {
+    _email = [email copy];
+    _link = [link copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:
+          @"Attempt to call prepareVerifyAssertionRequest: on a FIREmailPasswordAuthCredential."];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *email = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"email"];
+  NSString *password = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"password"];
+  NSString *link = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"link"];
+  if (email.length && password.length) {
+    self = [self initWithEmail:email password:password];
+  } else if (email.length && link.length) {
+    self = [self initWithEmail:email link:link];
+  } else {
+    self = nil;
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.email forKey:@"email"];
+  [aCoder encodeObject:self.password forKey:@"password"];
+  [aCoder encodeObject:self.link forKey:@"link"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential.m
new file mode 100644
index 0000000..2f633f7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential.m	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthCredential
+
+- (instancetype)init {
+  @throw [NSException exceptionWithName:@"Attempt to call unavailable initializer."
+                                 reason:@"This class is an abstract base class. It's init method "
+                                         "should not be called directly."
+                               userInfo:nil];
+}
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  self = [super init];
+  if (self) {
+    _provider = [provider copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  @throw [NSException exceptionWithName:@"Attempt to call virtual method."
+                                 reason:@"This method must be overridden by a subclass."
+                               userInfo:nil];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h
new file mode 100644
index 0000000..41f3c90
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h"
+
+@class FIRVerifyAssertionRequest;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthCredential ()
+
+/** @fn initWithProvider:
+    @brief Designated initializer.
+    @remarks This is the designated initializer for internal/friend subclasses.
+    @param provider The provider name.
+ */
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_DESIGNATED_INITIALIZER;
+
+/** @fn prepareVerifyAssertionRequest:
+    @brief Called immediately before a request to the verifyAssertion endpoint is made. Implementers
+        should update the passed request instance with their credentials.
+    @param request The request to be updated with credentials.
+ */
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthProvider.m
new file mode 100644
index 0000000..6192ad6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/FIRAuthProvider.m	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#pragma mark - Provider ID constants
+
+// Declared 'extern' in FIRGoogleAuthProvider.h
+NSString *const FIRGoogleAuthProviderID = @"google.com";
+
+// Declared 'extern' in FIRFacebookAuthProvider.h
+NSString *const FIRFacebookAuthProviderID = @"facebook.com";
+
+// Declared 'extern' in FIREmailAuthProvider.h
+NSString *const FIREmailAuthProviderID = @"password";
+
+// Declared 'extern' in FIRTwitterAuthProvider.h
+NSString *const FIRTwitterAuthProviderID = @"twitter.com";
+
+// Declared 'extern' in FIRGitHubAuthProvider.h
+NSString *const FIRGitHubAuthProviderID = @"github.com";
+
+// Declared 'extern' in FIRPhoneAuthProvider.h
+NSString *const FIRPhoneAuthProviderID = @"phone";
+
+// Declared 'extern' in FIRGameCenterAuthProvider.h
+NSString *const FIRGameCenterAuthProviderID = @"gc.apple.com";
+
+#pragma mark - sign-in methods constants
+
+// Declared 'extern' in FIRGoogleAuthProvider.h
+NSString *const FIRGoogleAuthSignInMethod = @"google.com";
+
+// Declared 'extern' in FIREmailAuthProvider.h
+NSString *const FIREmailPasswordAuthSignInMethod = @"password";
+
+// Declared 'extern' in FIREmailAuthProvider.h
+NSString *const FIREmailLinkAuthSignInMethod = @"emailLink";
+
+// Declared 'extern' in FIRTwitterAuthProvider.h
+NSString *const FIRTwitterAuthSignInMethod = @"twitter.com";
+
+// Declared 'extern' in FIRFacebookAuthProvider.h
+NSString *const FIRFacebookAuthSignInMethod = @"facebook.com";
+
+// Declared 'extern' in FIRGitHubAuthProvider.h
+NSString *const FIRGitHubAuthSignInMethod = @"github.com";
+
+// Declared 'extern' in FIRPhoneAuthProvider.h
+NSString *const FIRPhoneAuthSignInMethod = @"phone";
+
+// Declared 'extern' in FIRGameCenterAuthProvider.h
+NSString *const FIRGameCenterAuthSignInMethod = @"gc.apple.com";
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.h
new file mode 100644
index 0000000..646ddba
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRFacebookAuthCredential
+    @brief Internal implementation of FIRAuthCredential for the Facebook IdP.
+ */
+@interface FIRFacebookAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @fn initWithAccessToken:
+    @brief Designated initializer.
+    @param accessToken The Access Token obtained from Facebook.
+ */
+- (nullable instancetype)initWithAccessToken:(NSString *)accessToken NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.m
new file mode 100644
index 0000000..c2ba6f1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.m	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFacebookAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIRFacebookAuthCredential {
+  NSString *_accessToken;
+}
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithAccessToken:(NSString *)accessToken {
+  self = [super initWithProvider:FIRFacebookAuthProviderID];
+  if (self) {
+    _accessToken = [accessToken copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  request.providerAccessToken = _accessToken;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *accessToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"accessToken"];
+  self = [self initWithAccessToken:accessToken];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_accessToken forKey:@"accessToken"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthProvider.m
new file mode 100644
index 0000000..afdbb93
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthProvider.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Facebook/FIRFacebookAuthCredential.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+// FIRFacebookAuthProviderID is defined in FIRAuthProvider.m.
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRFacebookAuthProvider
+
+- (instancetype)init {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"This class is not meant to be initialized."];
+  return nil;
+}
+
++ (FIRAuthCredential *)credentialWithAccessToken:(NSString *)accessToken {
+  return [[FIRFacebookAuthCredential alloc] initWithAccessToken:accessToken];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h
new file mode 100644
index 0000000..70d4188
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h	
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGameCenterAuthCredential
+    @brief Internal implementation of FIRAuthCredential for Game Center credentials.
+ */
+@interface FIRGameCenterAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @property playerID
+    @brief The ID of the Game Center local player.
+ */
+@property(nonatomic, readonly) NSString *playerID;
+
+/** @property publicKeyURL
+    @brief The URL for the public encryption key.
+ */
+@property(nonatomic, readonly) NSURL *publicKeyURL;
+
+/** @property signature
+    @brief The verification signature data generated.
+ */
+@property(nonatomic, readonly) NSData *signature;
+
+/** @property salt
+    @brief A random string used to compute the hash and keep it randomized.
+ */
+@property(nonatomic, readonly) NSData *salt;
+
+/** @property timestamp
+    @brief The date and time that the signature was created.
+ */
+@property(nonatomic, readonly) uint64_t timestamp;
+
+/** @property displayName
+    @brief The display name of the local Game Center player.
+ */
+@property(nonatomic, readonly) NSString *displayName;
+
+/** @fn initWithPlayerID:publicKeyURL:signature:salt:timestamp:displayName:
+    @brief Designated initializer.
+    @param publicKeyURL The URL for the public encryption key.
+    @param signature The verification signature generated.
+    @param salt A random string used to compute the hash and keep it randomized.
+    @param timestamp The date and time that the signature was created.
+    @param displayName The display name of the Game Center player.
+ */
+- (nullable instancetype)initWithPlayerID:(NSString *)playerID
+                             publicKeyURL:(NSURL *)publicKeyURL
+                                signature:(NSData *)signature
+                                     salt:(NSData *)salt
+                                timestamp:(uint64_t)timestamp
+                              displayName:(NSString *)displayName NS_DESIGNATED_INITIALIZER;
+
+/** @fn initWithProvider:
+    @brief Initializer with a provider name.
+    @param provider The provider name.
+ */
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.m
new file mode 100644
index 0000000..b6c2326
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGameCenterAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGameCenterAuthCredential
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithPlayerID:(NSString *)playerID
+                             publicKeyURL:(NSURL *)publicKeyURL
+                                signature:(NSData *)signature
+                                     salt:(NSData *)salt
+                                timestamp:(uint64_t)timestamp
+                              displayName:(NSString *)displayName {
+  self = [super initWithProvider:FIRGameCenterAuthProviderID];
+  if (self) {
+    _playerID = [playerID copy];
+    _publicKeyURL = [publicKeyURL copy];
+    _signature = [signature copy];
+    _salt = [salt copy];
+    _timestamp = timestamp;
+    _displayName = [displayName copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:
+          @"Attempt to call prepareVerifyAssertionRequest: on a FIRGameCenterAuthCredential."];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *playerID = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"playerID"];
+  NSURL *publicKeyURL = [aDecoder decodeObjectOfClass:[NSURL class] forKey:@"publicKeyURL"];
+  NSData *signature = [aDecoder decodeObjectOfClass:[NSData class] forKey:@"signature"];
+  NSData *salt = [aDecoder decodeObjectOfClass:[NSData class] forKey:@"salt"];
+  NSNumber *timestamp = [aDecoder decodeObjectOfClass:[NSNumber class] forKey:@"timestamp"];
+  NSString *displayName = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"displayName"];
+  self = [self initWithPlayerID:playerID
+                   publicKeyURL:publicKeyURL
+                      signature:signature
+                           salt:salt
+                      timestamp:timestamp.unsignedLongLongValue
+                    displayName:displayName];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.playerID forKey:@"playerID"];
+  [aCoder encodeObject:self.publicKeyURL forKey:@"publicKeyURL"];
+  [aCoder encodeObject:self.signature forKey:@"signature"];
+  [aCoder encodeObject:self.salt forKey:@"salt"];
+  [aCoder encodeObject:[NSNumber numberWithUnsignedLongLong:self.timestamp] forKey:@"timestamp"];
+  [aCoder encodeObject:self.displayName forKey:@"displayName"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthProvider.m
new file mode 100644
index 0000000..083c1d3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthProvider.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGameCenterAuthProvider.h"
+#import <GameKit/GameKit.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGameCenterAuthProvider
+
+- (instancetype)init {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"This class is not meant to be initialized."];
+  return nil;
+}
+
++ (void)getCredentialWithCompletion:(FIRGameCenterCredentialCallback)completion {
+  /**
+   Linking GameKit.framework without using it on macOS results in App Store rejection.
+   Thus we don't link GameKit.framework to our SDK directly. `optionalLocalPlayer` is used for
+   checking whether the APP that consuming our SDK has linked GameKit.framework. If not, a
+   `GameKitNotLinkedError` will be raised.
+   **/
+  GKLocalPlayer *_Nullable optionalLocalPlayer = [[NSClassFromString(@"GKLocalPlayer") alloc] init];
+
+  if (!optionalLocalPlayer) {
+    if (completion) {
+      completion(nil, [FIRAuthErrorUtils gameKitNotLinkedError]);
+    }
+    return;
+  }
+
+  __weak GKLocalPlayer *localPlayer = [[optionalLocalPlayer class] localPlayer];
+  if (!localPlayer.isAuthenticated) {
+    if (completion) {
+      completion(nil, [FIRAuthErrorUtils localPlayerNotAuthenticatedError]);
+    }
+    return;
+  }
+
+  [localPlayer
+    generateIdentityVerificationSignatureWithCompletionHandler:^(
+        NSURL *publicKeyURL, NSData *signature, NSData *salt, uint64_t timestamp, NSError *error) {
+      if (error) {
+        if (completion) {
+          completion(nil, error);
+        }
+      } else {
+        if (completion) {
+          /**
+           @c `localPlayer.alias` is actually the displayname needed, instead of
+           `localPlayer.displayname`. For more information, check
+           https://developer.apple.com/documentation/gamekit/gkplayer
+           **/
+          NSString *displayName = localPlayer.alias;
+// iOS 13 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+          FIRGameCenterAuthCredential *credential =
+              [[FIRGameCenterAuthCredential alloc] initWithPlayerID:localPlayer.playerID
+                                                       publicKeyURL:publicKeyURL
+                                                          signature:signature
+                                                               salt:salt
+                                                          timestamp:timestamp
+                                                        displayName:displayName];
+#pragma clang diagnostic pop
+          completion(credential, nil);
+        }
+      }
+    }];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.h
new file mode 100644
index 0000000..f6765c4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGitHubAuthCredential
+    @brief Internal implementation of FIRAuthCredential for GitHub credentials.
+ */
+@interface FIRGitHubAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @property token
+    @brief The GitHub OAuth access token.
+ */
+@property(nonatomic, readonly) NSString *token;
+
+/** @fn initWithToken:
+    @brief Designated initializer.
+    @param token The GitHub OAuth access token.
+ */
+- (nullable instancetype)initWithToken:(NSString *)token NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.m
new file mode 100644
index 0000000..c752e20
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.m	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGitHubAuthProvider.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRGitHubAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIRGitHubAuthCredential
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithToken:(NSString *)token {
+  self = [super initWithProvider:FIRGitHubAuthProviderID];
+  if (self) {
+    _token = [token copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  request.providerAccessToken = _token;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *token = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"token"];
+  self = [self initWithToken:token];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.token forKey:@"token"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthProvider.m
new file mode 100644
index 0000000..1f853d8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthProvider.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGitHubAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/GitHub/FIRGitHubAuthCredential.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+// FIRGitHubAuthProviderID is defined in FIRAuthProvider.m.
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGitHubAuthProvider
+
+- (instancetype)init {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"This class is not meant to be initialized."];
+  return nil;
+}
+
++ (FIRAuthCredential *)credentialWithToken:(NSString *)token {
+  return [[FIRGitHubAuthCredential alloc] initWithToken:token];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.h
new file mode 100644
index 0000000..6d205c1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.h	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGoogleAuthCredential
+    @brief Internal implementation of FIRAuthCredential for the Google IdP.
+ */
+@interface FIRGoogleAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @fn initWithIDToken:accessToken:
+    @brief Designated initializer.
+    @param IDToken The ID Token obtained from Google.
+    @param accessToken The Access Token obtained from Google.
+ */
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                             accessToken:(NSString *)accessToken NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.m
new file mode 100644
index 0000000..149445d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.m	
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGoogleAuthProvider.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRGoogleAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIRGoogleAuthCredential {
+  NSString *_IDToken;
+  NSString *_accessToken;
+}
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken accessToken:(NSString *)accessToken {
+  self = [super initWithProvider:FIRGoogleAuthProviderID];
+  if (self) {
+    _IDToken = [IDToken copy];
+    _accessToken = [accessToken copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  request.providerIDToken = _IDToken;
+  request.providerAccessToken = _accessToken;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *IDToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"IDToken"];
+  NSString *accessToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"accessToken"];
+  self = [self initWithIDToken:IDToken accessToken:accessToken];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_IDToken forKey:@"IDToken"];
+  [aCoder encodeObject:_accessToken forKey:@"accessToken"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthProvider.m
new file mode 100644
index 0000000..51e2fc8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthProvider.m	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRGoogleAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Google/FIRGoogleAuthCredential.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+// FIRGoogleAuthProviderID is defined in FIRAuthProvider.m.
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGoogleAuthProvider
+
+- (instancetype)init {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"This class is not meant to be initialized."];
+  return nil;
+}
+
++ (FIRAuthCredential *)credentialWithIDToken:(NSString *)IDToken
+                                 accessToken:(NSString *)accessToken {
+  return [[FIRGoogleAuthCredential alloc] initWithIDToken:IDToken accessToken:accessToken];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential.m
new file mode 100644
index 0000000..3c88a26
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential.m	
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIROAuthCredential ()
+
+@property(nonatomic, nullable) NSString *rawNonce;
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIROAuthCredential
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (instancetype)initWithProviderID:(NSString *)providerID
+                           IDToken:(nullable NSString *)IDToken
+                          rawNonce:(nullable NSString *)rawNonce
+                       accessToken:(nullable NSString *)accessToken
+                            secret:(nullable NSString *)secret
+                      pendingToken:(nullable NSString *)pendingToken {
+  self = [super initWithProvider:providerID];
+  if (self) {
+    _IDToken = IDToken;
+    _rawNonce = rawNonce;
+    _accessToken = accessToken;
+    _pendingToken = pendingToken;
+    _secret = secret;
+  }
+  return self;
+}
+
+- (instancetype)initWithProviderID:(NSString *)providerID
+                         sessionID:(NSString *)sessionID
+            OAuthResponseURLString:(NSString *)OAuthResponseURLString {
+  self = [self initWithProviderID:providerID
+                          IDToken:nil
+                         rawNonce:nil
+                      accessToken:nil
+                           secret:nil
+                     pendingToken:nil];
+  if (self) {
+    _OAuthResponseURLString = OAuthResponseURLString;
+    _sessionID = sessionID;
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithVerifyAssertionResponse:(FIRVerifyAssertionResponse *)response {
+  if (response.oauthIDToken.length || response.oauthAccessToken.length ||
+      response.oauthSecretToken.length) {
+    return [self initWithProviderID:response.providerID
+                            IDToken:response.oauthIDToken
+                           rawNonce:nil
+                        accessToken:response.oauthAccessToken
+                             secret:response.oauthSecretToken
+                       pendingToken:response.pendingToken];
+  }
+  return nil;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  request.providerIDToken = _IDToken;
+  request.providerRawNonce = _rawNonce;
+  request.providerAccessToken = _accessToken;
+  request.requestURI = _OAuthResponseURLString;
+  request.sessionID = _sessionID;
+  request.providerOAuthTokenSecret = _secret;
+  request.pendingToken = _pendingToken;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *IDToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"IDToken"];
+  NSString *rawNonce = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"rawNonce"];
+  NSString *accessToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"accessToken"];
+  NSString *pendingToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"pendingToken"];
+  NSString *secret = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"secret"];
+  self = [self initWithProviderID:self.provider
+                          IDToken:IDToken
+                         rawNonce:rawNonce
+                      accessToken:accessToken
+                           secret:secret
+                     pendingToken:pendingToken];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.IDToken forKey:@"IDToken"];
+  [aCoder encodeObject:self.rawNonce forKey:@"rawNonce"];
+  [aCoder encodeObject:self.accessToken forKey:@"accessToken"];
+  [aCoder encodeObject:self.pendingToken forKey:@"pendingToken"];
+  [aCoder encodeObject:self.secret forKey:@"secret"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h
new file mode 100644
index 0000000..9f07601
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h	
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h"
+
+@class FIRVerifyAssertionResponse;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @extension FIROAuthCredential
+    @brief Internal implementation of FIRAuthCredential for generic credentials.
+ */
+@interface FIROAuthCredential ()
+
+/** @property OAuthResponseURLString
+    @brief A string representation of the response URL corresponding to this OAuthCredential.
+ */
+@property(nonatomic, readonly, nullable) NSString *OAuthResponseURLString;
+
+/** @property sessionID
+    @brief The session ID used when completing the headful-lite flow.
+ */
+@property(nonatomic, readonly, nullable) NSString *sessionID;
+
+/** @property pendingToken
+    @brief The pending token used when completing the headful-lite flow.
+ */
+@property(nonatomic, readonly, nullable) NSString *pendingToken;
+
+/** @fn initWithProviderId:IDToken:accessToken:secret:pendingToken
+    @brief Designated initializer.
+    @param providerID The provider ID associated with the credential being created.
+    @param IDToken The ID Token associated with the credential being created.
+    @param rawNonce The raw nonce associated with the Auth credential being created.
+    @param accessToken The access token associated with the credential being created.
+    @param secret The secret associated with the credential being created.
+    @param pendingToken The pending token associated with the credential being created.
+ */
+- (instancetype)initWithProviderID:(NSString *)providerID
+                           IDToken:(nullable NSString *)IDToken
+                          rawNonce:(nullable NSString *)rawNonce
+                       accessToken:(nullable NSString *)accessToken
+                            secret:(nullable NSString *)secret
+                      pendingToken:(nullable NSString *)pendingToken NS_DESIGNATED_INITIALIZER;
+
+/** @fn initWithProviderId:sessionID:OAuthResponseURLString:
+    @brief Intitializer which takes a sessionID and an OAuthResponseURLString.
+    @param providerID The provider ID associated with the credential being created.
+    @param sessionID The session ID used when completing the headful-lite flow.
+    @param OAuthResponseURLString The error that occurred if any.
+ */
+- (instancetype)initWithProviderID:(NSString *)providerID
+                         sessionID:(NSString *)sessionID
+            OAuthResponseURLString:(NSString *)OAuthResponseURLString;
+
+/** @fn initWithVerifyAssertionResponse
+    @brief Intitializer which takes an verifyAssertion response.
+    @param response The verifyAssertion Response to create the credential instance.
+ */
+- (nullable instancetype)initWithVerifyAssertionResponse:(FIRVerifyAssertionResponse *)response;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthProvider.m
new file mode 100644
index 0000000..53b376c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthProvider.m	
@@ -0,0 +1,445 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthProvider.h"
+#include <CommonCrypto/CommonCrypto.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h"
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRHeadfulLiteURLCallBack
+    @brief The callback invoked at the end of the flow to fetch a headful-lite URL.
+    @param headfulLiteURL The headful lite URL.
+    @param error The error that occurred while fetching the headful-lite, if any.
+ */
+typedef void (^FIRHeadfulLiteURLCallBack)(NSURL *_Nullable headfulLiteURL,
+                                          NSError *_Nullable error);
+
+/** @var kHeadfulLiteURLStringFormat
+    @brief The format of the URL used to open the headful lite page during sign-in.
+ */
+NSString *const kHeadfulLiteURLStringFormat = @"https://%@/__/auth/handler?%@";
+
+/** @var kHeadfulLiteEmulatorURLStringFormat
+    @brief The format of the URL used to open the emulated headful lite page during sign-in.
+ */
+NSString *const kHeadfulLiteEmulatorURLStringFormat = @"http://%@/emulator/auth/handler?%@";
+
+/** @var kauthTypeSignInWithRedirect
+    @brief The auth type to be specified in the sign-in request with redirect request and response.
+ */
+static NSString *const kAuthTypeSignInWithRedirect = @"signInWithRedirect";
+
+/** @var kCustomUrlSchemePrefix
+    @brief The prefix to append to the Firebase app ID custom callback scheme..
+ */
+static NSString *const kCustomUrlSchemePrefix = @"app-";
+
+@implementation FIROAuthProvider {
+  /** @var _auth
+      @brief The auth instance used for launching the URL presenter.
+   */
+  FIRAuth *_auth;
+
+  /** @var _callbackScheme
+      @brief The callback URL scheme used for headful-lite sign-in.
+   */
+  NSString *_callbackScheme;
+
+  /** @var _usingClientIDScheme
+      @brief True if the reverse client ID is registered as a custom URL scheme, and false
+     otherwise.
+   */
+  BOOL _usingClientIDScheme;
+}
+
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                     accessToken:(nullable NSString *)accessToken {
+  return [[FIROAuthCredential alloc] initWithProviderID:providerID
+                                                IDToken:IDToken
+                                               rawNonce:nil
+                                            accessToken:accessToken
+                                                 secret:nil
+                                           pendingToken:nil];
+}
+
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                     accessToken:(NSString *)accessToken {
+  return [[FIROAuthCredential alloc] initWithProviderID:providerID
+                                                IDToken:nil
+                                               rawNonce:nil
+                                            accessToken:accessToken
+                                                 secret:nil
+                                           pendingToken:nil];
+}
+
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                        rawNonce:(nullable NSString *)rawNonce
+                                     accessToken:(nullable NSString *)accessToken {
+  return [[FIROAuthCredential alloc] initWithProviderID:providerID
+                                                IDToken:IDToken
+                                               rawNonce:rawNonce
+                                            accessToken:accessToken
+                                                 secret:nil
+                                           pendingToken:nil];
+}
+
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                        rawNonce:(nullable NSString *)rawNonce {
+  return [[FIROAuthCredential alloc] initWithProviderID:providerID
+                                                IDToken:IDToken
+                                               rawNonce:rawNonce
+                                            accessToken:nil
+                                                 secret:nil
+                                           pendingToken:nil];
+}
+
++ (instancetype)providerWithProviderID:(NSString *)providerID {
+  return [[self alloc] initWithProviderID:providerID auth:[FIRAuth auth]];
+}
+
++ (instancetype)providerWithProviderID:(NSString *)providerID auth:(FIRAuth *)auth {
+  return [[self alloc] initWithProviderID:providerID auth:auth];
+}
+
+#if TARGET_OS_IOS
+- (void)getCredentialWithUIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                         completion:(nullable FIRAuthCredentialCallback)completion {
+  if (![FIRAuthWebUtils isCallbackSchemeRegisteredForCustomURLScheme:self->_callbackScheme]) {
+    [NSException raise:NSInternalInconsistencyException
+                format:@"Please register custom URL scheme '%@' in the app's Info.plist file.",
+                       self->_callbackScheme];
+  }
+  __weak __typeof__(self) weakSelf = self;
+  __weak FIRAuth *weakAuth = _auth;
+  __weak NSString *weakProviderID = _providerID;
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRAuthCredentialCallback callbackOnMainThread =
+        ^(FIRAuthCredential *_Nullable credential, NSError *_Nullable error) {
+          if (completion) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+              completion(credential, error);
+            });
+          }
+        };
+    NSString *eventID = [FIRAuthWebUtils randomStringWithLength:10];
+    NSString *sessionID = [FIRAuthWebUtils randomStringWithLength:10];
+    __strong __typeof__(self) strongSelf = weakSelf;
+    [strongSelf
+        getHeadFulLiteURLWithEventID:eventID
+                           sessionID:sessionID
+                          completion:^(NSURL *_Nullable headfulLiteURL, NSError *_Nullable error) {
+                            if (error) {
+                              callbackOnMainThread(nil, error);
+                              return;
+                            }
+                            FIRAuthURLCallbackMatcher callbackMatcher =
+                                ^BOOL(NSURL *_Nullable callbackURL) {
+                                  return [FIRAuthWebUtils
+                                      isExpectedCallbackURL:callbackURL
+                                                    eventID:eventID
+                                                   authType:kAuthTypeSignInWithRedirect
+                                             callbackScheme:strongSelf->_callbackScheme];
+                                };
+                            __strong FIRAuth *strongAuth = weakAuth;
+                            [strongAuth.authURLPresenter
+                                     presentURL:headfulLiteURL
+                                     UIDelegate:UIDelegate
+                                callbackMatcher:callbackMatcher
+                                     completion:^(NSURL *_Nullable callbackURL,
+                                                  NSError *_Nullable error) {
+                                       if (error) {
+                                         callbackOnMainThread(nil, error);
+                                         return;
+                                       }
+                                       NSString *OAuthResponseURLString =
+                                           [strongSelf OAuthResponseForURL:callbackURL
+                                                                     error:&error];
+                                       if (error) {
+                                         callbackOnMainThread(nil, error);
+                                         return;
+                                       }
+                                       __strong NSString *strongProviderID = weakProviderID;
+                                       FIROAuthCredential *credential = [[FIROAuthCredential alloc]
+                                               initWithProviderID:strongProviderID
+                                                        sessionID:sessionID
+                                           OAuthResponseURLString:OAuthResponseURLString];
+                                       callbackOnMainThread(credential, nil);
+                                     }];
+                          }];
+  });
+}
+#endif  // TARGET_OS_IOS
+
+#pragma mark - Internal Methods
+
+/** @fn initWithProviderID:auth:
+    @brief returns an instance of @c FIROAuthProvider associated with the provided auth instance.
+    @param auth The Auth instance to be associated with the OAuthProvider instance.
+    @return An Instance of @c FIROAuthProvider.
+  */
+- (nullable instancetype)initWithProviderID:(NSString *)providerID auth:(FIRAuth *)auth {
+  if (!auth.requestConfiguration.emulatorHostAndPort) {
+    NSAssert(![providerID isEqual:FIRFacebookAuthProviderID],
+             @"Sign in with Facebook is not supported via generic IDP; the Facebook TOS "
+              "dictate that you must use the Facebook iOS SDK for Facebook login.");
+    NSAssert(![providerID isEqual:@"apple.com"],
+             @"Sign in with Apple is not supported via generic IDP; You must use the Apple iOS SDK"
+              " for Sign in with Apple.");
+  }
+  self = [super init];
+  if (self) {
+    _auth = auth;
+    _providerID = providerID;
+    if (_auth.app.options.clientID) {
+      NSString *reverseClientIDScheme =
+          [[[_auth.app.options.clientID componentsSeparatedByString:@"."]
+               reverseObjectEnumerator].allObjects componentsJoinedByString:@"."];
+      if ([FIRAuthWebUtils isCallbackSchemeRegisteredForCustomURLScheme:reverseClientIDScheme]) {
+        _callbackScheme = reverseClientIDScheme;
+        _usingClientIDScheme = YES;
+      }
+    }
+
+    if (!_usingClientIDScheme) {
+      _callbackScheme = [kCustomUrlSchemePrefix
+          stringByAppendingString:[_auth.app.options.googleAppID
+                                      stringByReplacingOccurrencesOfString:@":"
+                                                                withString:@"-"]];
+    }
+  }
+  return self;
+}
+
+/** @fn OAuthResponseForURL:error:
+    @brief Parses the redirected URL and returns a string representation of the OAuth response URL.
+    @param URL The url to be parsed for an OAuth response URL.
+    @param error The error that occurred if any.
+    @return The OAuth response if successful.
+ */
+- (nullable NSString *)OAuthResponseForURL:(NSURL *)URL error:(NSError *_Nullable *_Nullable)error {
+  NSDictionary<NSString *, NSString *> *URLQueryItems =
+      [FIRAuthWebUtils dictionaryWithHttpArgumentsString:URL.query];
+  NSURL *deepLinkURL = [NSURL URLWithString:URLQueryItems[@"deep_link_id"]];
+  URLQueryItems = [FIRAuthWebUtils dictionaryWithHttpArgumentsString:deepLinkURL.query];
+  NSString *queryItemLink = URLQueryItems[@"link"];
+  if (queryItemLink) {
+    return queryItemLink;
+  }
+  if (!error) {
+    return nil;
+  }
+  NSData *errorData = [URLQueryItems[@"firebaseError"] dataUsingEncoding:NSUTF8StringEncoding];
+  NSError *jsonError;
+  NSDictionary *errorDict = [NSJSONSerialization JSONObjectWithData:errorData
+                                                            options:0
+                                                              error:&jsonError];
+  if (jsonError) {
+    *error = [FIRAuthErrorUtils JSONSerializationErrorWithUnderlyingError:jsonError];
+    return nil;
+  }
+  *error = [FIRAuthErrorUtils URLResponseErrorWithCode:errorDict[@"code"]
+                                               message:errorDict[@"message"]];
+  if (!*error) {
+    NSString *reason;
+    if (errorDict[@"code"] && errorDict[@"message"]) {
+      reason = [NSString stringWithFormat:@"[%@] - %@", errorDict[@"code"], errorDict[@"message"]];
+    }
+    *error = [FIRAuthErrorUtils webSignInUserInteractionFailureWithReason:reason];
+  }
+  return nil;
+}
+
+/** @fn getHeadFulLiteURLWithEventID:completion:
+    @brief Constructs a URL used for opening a headful-lite flow using a given event
+        ID and session ID.
+    @param eventID The event ID used for this purpose.
+    @param sessionID The session ID used when completing the headful lite flow.
+    @param completion The callback invoked after the URL has been constructed or an error
+        has been encountered.
+ */
+- (void)getHeadFulLiteURLWithEventID:(NSString *)eventID
+                           sessionID:(NSString *)sessionID
+                          completion:(FIRHeadfulLiteURLCallBack)completion {
+  __weak __typeof__(self) weakSelf = self;
+  [FIRAuthWebUtils
+      fetchAuthDomainWithRequestConfiguration:_auth.requestConfiguration
+                                   completion:^(NSString *_Nullable authDomain,
+                                                NSError *_Nullable error) {
+                                     if (error) {
+                                       if (completion) {
+                                         completion(nil, error);
+                                       }
+                                       return;
+                                     }
+                                     __strong __typeof__(self) strongSelf = weakSelf;
+                                     NSString *bundleID = [NSBundle mainBundle].bundleIdentifier;
+                                     NSString *clientID = strongSelf->_auth.app.options.clientID;
+                                     NSString *appID = strongSelf->_auth.app.options.googleAppID;
+                                     NSString *apiKey =
+                                         strongSelf->_auth.requestConfiguration.APIKey;
+                                     NSMutableDictionary *urlArguments = [@{
+                                       @"apiKey" : apiKey,
+                                       @"authType" : kAuthTypeSignInWithRedirect,
+                                       @"ibi" : bundleID ?: @"",
+                                       @"sessionId" : [strongSelf hashforString:sessionID],
+                                       @"v" : [FIRAuthBackend authUserAgent],
+                                       @"eventId" : eventID,
+                                       @"providerId" : strongSelf->_providerID,
+                                     } mutableCopy];
+                                     if (strongSelf->_usingClientIDScheme) {
+                                       urlArguments[@"clientId"] = clientID;
+                                     } else {
+                                       urlArguments[@"appId"] = appID;
+                                     }
+                                     if (strongSelf.scopes.count) {
+                                       urlArguments[@"scopes"] =
+                                           [strongSelf.scopes componentsJoinedByString:@","];
+                                     }
+                                     if (strongSelf.customParameters.count) {
+                                       NSString *customParameters =
+                                           [strongSelf customParametersStringWithError:&error];
+                                       if (error) {
+                                         completion(nil, error);
+                                         return;
+                                       }
+                                       if (customParameters) {
+                                         urlArguments[@"customParameters"] = customParameters;
+                                       }
+                                     }
+                                     if (strongSelf->_auth.requestConfiguration.languageCode) {
+                                       urlArguments[@"hl"] =
+                                           strongSelf->_auth.requestConfiguration.languageCode;
+                                     }
+                                     NSString *argumentsString = [strongSelf
+                                         httpArgumentsStringForArgsDictionary:urlArguments];
+                                     NSString *URLString;
+                                     if (strongSelf->_auth.requestConfiguration
+                                             .emulatorHostAndPort) {
+                                       URLString = [NSString
+                                           stringWithFormat:kHeadfulLiteEmulatorURLStringFormat,
+                                                            authDomain, argumentsString];
+                                     } else {
+                                       URLString =
+                                           [NSString stringWithFormat:kHeadfulLiteURLStringFormat,
+                                                                      authDomain, argumentsString];
+                                     }
+                                     if (completion) {
+                                       NSCharacterSet *set =
+                                           [NSCharacterSet URLFragmentAllowedCharacterSet];
+                                       completion(
+                                           [NSURL
+                                               URLWithString:
+                                                   [URLString
+                                                       stringByAddingPercentEncodingWithAllowedCharacters:
+                                                           set]],
+                                           nil);
+                                     }
+                                   }];
+}
+
+/** @fn customParametersString
+    @brief Returns a JSON string representation of the custom parameters dictionary corresponding
+        to the OAuthProvider.
+    @return The JSON string representation of the custom parameters dictionary corresponding
+        to the OAuthProvider.
+ */
+- (nullable NSString *)customParametersStringWithError:(NSError *_Nullable *_Nullable)error {
+  if (!_customParameters.count) {
+    return nil;
+  }
+
+  if (!error) {
+    return nil;
+  }
+  NSError *jsonError;
+  NSData *customParametersJSONData = [NSJSONSerialization dataWithJSONObject:_customParameters
+                                                                     options:0
+                                                                       error:&jsonError];
+  if (jsonError) {
+    *error = [FIRAuthErrorUtils JSONSerializationErrorWithUnderlyingError:jsonError];
+    return nil;
+  }
+
+  NSString *customParamsRawJSON = [[NSString alloc] initWithData:customParametersJSONData
+                                                        encoding:NSUTF8StringEncoding];
+  return customParamsRawJSON;
+}
+
+/** @fn hashforString:
+    @brief Returns the SHA256 hash representation of a given string object.
+    @param string The string for which a SHA256 hash is desired.
+    @return An hexadecimal string representation of the SHA256 hash.
+ */
+- (NSString *)hashforString:(NSString *)string {
+  NSData *sessionIDData = [string dataUsingEncoding:NSUTF8StringEncoding];
+  NSMutableData *hashOutputData = [NSMutableData dataWithLength:CC_SHA256_DIGEST_LENGTH];
+  if (CC_SHA256(sessionIDData.bytes, (CC_LONG)[sessionIDData length],
+                hashOutputData.mutableBytes)) {
+  }
+  return [self hexStringFromData:hashOutputData];
+  ;
+}
+
+/** @fn hexStringFromData:
+    @brief Returns the hexadecimal string representation of an NSData object.
+    @param data The NSData object for which a hexadecical string is desired.
+    @return The hexadecimal string representation of the supplied NSData object.
+ */
+- (NSString *)hexStringFromData:(NSData *)data {
+  const unsigned char *dataBuffer = (const unsigned char *)[data bytes];
+  NSMutableString *string = [[NSMutableString alloc] init];
+  for (unsigned int i = 0; i < data.length; i++) {
+    [string appendFormat:@"%02lx", (unsigned long)dataBuffer[i]];
+  }
+  return [string copy];
+}
+
+- (NSString *)httpArgumentsStringForArgsDictionary:(NSDictionary *)argsDictionary {
+  NSMutableArray *arguments = [NSMutableArray arrayWithCapacity:argsDictionary.count];
+  NSString *key;
+  for (key in argsDictionary) {
+    NSString *description = [argsDictionary[key] description];
+    [arguments
+        addObject:[NSString
+                      stringWithFormat:@"%@=%@",
+                                       [FIRAuthWebUtils stringByUnescapingFromURLArgument:key],
+                                       [FIRAuthWebUtils
+                                           stringByUnescapingFromURLArgument:description]]];
+  }
+  return [arguments componentsJoinedByString:@"&"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential.m
new file mode 100644
index 0000000..4c197bd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential.m	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRPhoneAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIRPhoneAuthCredential
+
+- (instancetype)initWithTemporaryProof:(NSString *)temporaryProof
+                           phoneNumber:(NSString *)phoneNumber
+                            providerID:(NSString *)providerID {
+  self = [super initWithProvider:providerID];
+  if (self) {
+    _temporaryProof = [temporaryProof copy];
+    _phoneNumber = [phoneNumber copy];
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (instancetype)initWithProviderID:(NSString *)providerID
+                    verificationID:(NSString *)verificationID
+                  verificationCode:(NSString *)verificationCode {
+  self = [super initWithProvider:providerID];
+  if (self) {
+    _verificationID = [verificationID copy];
+    _verificationCode = [verificationCode copy];
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *verificationID = [aDecoder decodeObjectOfClass:[NSString class]
+                                                    forKey:@"verificationID"];
+  NSString *verificationCode = [aDecoder decodeObjectOfClass:[NSString class]
+                                                      forKey:@"verificationCode"];
+  NSString *temporaryProof = [aDecoder decodeObjectOfClass:[NSString class]
+                                                    forKey:@"temporaryProof"];
+  NSString *phoneNumber = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"phoneNumber"];
+  if (temporaryProof.length && phoneNumber.length) {
+    self = [self initWithTemporaryProof:temporaryProof
+                            phoneNumber:phoneNumber
+                             providerID:self.provider];
+  } else if (verificationID.length && verificationCode.length) {
+    self = [self initWithProviderID:self.provider
+                     verificationID:verificationID
+                   verificationCode:verificationCode];
+  } else {
+    self = nil;
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.verificationID forKey:@"verificationID"];
+  [aCoder encodeObject:self.verificationCode forKey:@"verificationCode"];
+  [aCoder encodeObject:self.temporaryProof forKey:@"temporaryProof"];
+  [aCoder encodeObject:self.phoneNumber forKey:@"phoneNumber"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h
new file mode 100644
index 0000000..78c1b74
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @extension FIRPhoneAuthCredential
+    @brief Internal implementation of FIRAuthCredential for Phone Auth credentials.
+ */
+@interface FIRPhoneAuthCredential ()
+
+/** @var verificationID
+    @brief The verification ID obtained from invoking @c verifyPhoneNumber:completion:
+ */
+@property(nonatomic, readonly, nonnull) NSString *verificationID;
+
+/** @var verificationCode
+    @brief The verification code provided by the user.
+ */
+@property(nonatomic, readonly, nonnull) NSString *verificationCode;
+
+/** @var temporaryProof
+    @brief The a temporary proof code perftaining to this credential, returned from the backend.
+ */
+@property(nonatomic, readonly, nonnull) NSString *temporaryProof;
+
+/** @var phoneNumber
+    @brief The a phone number pertaining to this credential, returned from the backend.
+ */
+@property(nonatomic, readonly, nonnull) NSString *phoneNumber;
+
+/** @var initWithTemporaryProof:phoneNumber:
+    @brief Designated Initializer.
+    @param providerID The provider ID associated with the phone auth credential being created.
+ */
+- (instancetype)initWithTemporaryProof:(NSString *)temporaryProof
+                           phoneNumber:(NSString *)phoneNumber
+                            providerID:(NSString *)providerID NS_DESIGNATED_INITIALIZER;
+
+/** @var initWithProviderID:verificationID:verificationCode:
+    @brief Designated Initializer.
+    @param providerID The provider ID associated with the phone auth credential being created.
+    @param verificationID The verification ID associated witht Phone Auth credential being created.
+    @param verificationCode The verification code associated witht Phone Auth credential being
+        created.
+ */
+- (instancetype)initWithProviderID:(NSString *)providerID
+                    verificationID:(NSString *)verificationID
+                  verificationCode:(NSString *)verificationCode NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthProvider.m
new file mode 100644
index 0000000..cf85006
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthProvider.m	
@@ -0,0 +1,751 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthSettings.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h"
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo+Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRReCAPTCHAURLCallBack
+    @brief The callback invoked at the end of the flow to fetch a reCAPTCHA URL.
+    @param reCAPTCHAURL The reCAPTCHA URL.
+    @param error The error that occurred while fetching the reCAPTCHAURL, if any.
+ */
+typedef void (^FIRReCAPTCHAURLCallBack)(NSURL *_Nullable reCAPTCHAURL, NSError *_Nullable error);
+
+/** @typedef FIRVerifyClientCallback
+    @brief The callback invoked at the end of a client verification flow.
+    @param appCredential credential that proves the identity of the app during a phone
+        authentication flow.
+    @param error The error that occurred while verifying the app, if any.
+ */
+typedef void (^FIRVerifyClientCallback)(FIRAuthAppCredential *_Nullable appCredential,
+                                        NSString *_Nullable reCAPTCHAToken,
+                                        NSError *_Nullable error);
+
+/** @typedef FIRFetchAuthDomainCallback
+    @brief The callback invoked at the end of the flow to fetch the Auth domain.
+    @param authDomain The Auth domain.
+    @param error The error that occurred while fetching the auth domain, if any.
+ */
+typedef void (^FIRFetchAuthDomainCallback)(NSString *_Nullable authDomain,
+                                           NSError *_Nullable error);
+
+/** @var kauthTypeVerifyApp
+    @brief The auth type to be specified in the app verification request.
+ */
+static NSString *const kAuthTypeVerifyApp = @"verifyApp";
+
+/** @var kCustomUrlSchemePrefix
+    @brief The prefix to append to the Firebase app ID custom callback scheme..
+ */
+static NSString *const kCustomUrlSchemePrefix = @"app-";
+
+/** @var kReCAPTCHAURLStringFormat
+    @brief The format of the URL used to open the reCAPTCHA page during app verification.
+ */
+NSString *const kReCAPTCHAURLStringFormat = @"https://%@/__/auth/handler?";
+
+extern NSString *const FIRPhoneMultiFactorID;
+
+@implementation FIRPhoneAuthProvider {
+  /** @var _auth
+      @brief The auth instance used for verifying the phone number.
+   */
+  FIRAuth *_auth;
+
+  /** @var _callbackScheme
+      @brief The callback URL scheme used for reCAPTCHA fallback.
+   */
+  NSString *_callbackScheme;
+
+  /** @var _usingClientIDScheme
+      @brief True if the reverse client ID is registered as a custom URL scheme, and false
+     otherwise.
+   */
+  BOOL _usingClientIDScheme;
+}
+
+/** @fn initWithAuth:
+    @brief returns an instance of @c FIRPhoneAuthProvider associated with the provided auth
+          instance.
+    @return An Instance of @c FIRPhoneAuthProvider.
+   */
+- (nullable instancetype)initWithAuth:(FIRAuth *)auth {
+  self = [super init];
+  if (self) {
+    _auth = auth;
+    if (_auth.app.options.clientID) {
+      NSString *reverseClientIDScheme =
+          [[[_auth.app.options.clientID componentsSeparatedByString:@"."]
+               reverseObjectEnumerator].allObjects componentsJoinedByString:@"."];
+      if ([FIRAuthWebUtils isCallbackSchemeRegisteredForCustomURLScheme:reverseClientIDScheme]) {
+        _callbackScheme = reverseClientIDScheme;
+        _usingClientIDScheme = YES;
+      }
+    }
+    if (!_usingClientIDScheme) {
+      _callbackScheme = [kCustomUrlSchemePrefix
+          stringByAppendingString:[_auth.app.options.googleAppID
+                                      stringByReplacingOccurrencesOfString:@":"
+                                                                withString:@"-"]];
+    }
+  }
+  return self;
+}
+
+- (void)verifyPhoneNumber:(NSString *)phoneNumber
+               UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+               completion:(nullable FIRVerificationResultCallback)completion {
+  if (![FIRAuthWebUtils isCallbackSchemeRegisteredForCustomURLScheme:_callbackScheme]) {
+    [NSException raise:NSInternalInconsistencyException
+                format:@"Please register custom URL scheme '%@' in the app's Info.plist file.",
+                       _callbackScheme];
+  }
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRVerificationResultCallback callBackOnMainThread =
+        ^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+          if (completion) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+              completion(verificationID, error);
+            });
+          }
+        };
+    [self
+        internalVerifyPhoneNumber:phoneNumber
+                       UIDelegate:UIDelegate
+                       completion:^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+                         if (!error) {
+                           callBackOnMainThread(verificationID, nil);
+                           return;
+                         } else {
+                           callBackOnMainThread(nil, error);
+                           return;
+                         }
+                       }];
+  });
+}
+
+- (void)verifyPhoneNumberWithMultiFactorInfo:(FIRPhoneMultiFactorInfo *)phoneMultiFactorInfo
+                                  UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                          multiFactorSession:(nullable FIRMultiFactorSession *)session
+                                  completion:(nullable FIRVerificationResultCallback)completion {
+  session.multiFactorInfo = phoneMultiFactorInfo;
+  [self verifyPhoneNumber:phoneMultiFactorInfo.phoneNumber
+               UIDelegate:UIDelegate
+       multiFactorSession:session
+               completion:completion];
+}
+
+- (void)verifyPhoneNumber:(NSString *)phoneNumber
+               UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+       multiFactorSession:(nullable FIRMultiFactorSession *)session
+               completion:(nullable FIRVerificationResultCallback)completion {
+  if (!session) {
+    [self verifyPhoneNumber:phoneNumber UIDelegate:UIDelegate completion:completion];
+    return;
+  }
+
+  if (![FIRAuthWebUtils isCallbackSchemeRegisteredForCustomURLScheme:_callbackScheme]) {
+    [NSException raise:NSInternalInconsistencyException
+                format:@"Please register custom URL scheme '%@' in the app's Info.plist file.",
+                       _callbackScheme];
+  }
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    FIRVerificationResultCallback callBackOnMainThread =
+        ^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+          if (completion) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+              completion(verificationID, error);
+            });
+          }
+        };
+    [self
+        internalVerifyPhoneNumber:phoneNumber
+                       UIDelegate:UIDelegate
+               multiFactorSession:session
+                       completion:^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+                         if (!error) {
+                           callBackOnMainThread(verificationID, nil);
+                           return;
+                         } else {
+                           callBackOnMainThread(nil, error);
+                           return;
+                         }
+                       }];
+  });
+}
+
+- (FIRPhoneAuthCredential *)credentialWithVerificationID:(NSString *)verificationID
+                                        verificationCode:(NSString *)verificationCode {
+  return [[FIRPhoneAuthCredential alloc] initWithProviderID:FIRPhoneAuthProviderID
+                                             verificationID:verificationID
+                                           verificationCode:verificationCode];
+}
+
++ (instancetype)provider {
+  return [[self alloc] initWithAuth:[FIRAuth auth]];
+}
+
++ (instancetype)providerWithAuth:(FIRAuth *)auth {
+  return [[self alloc] initWithAuth:auth];
+}
+
+#pragma mark - Internal Methods
+
+/** @fn reCAPTCHATokenForURL:error:
+    @brief Parses the reCAPTCHA URL and returns the reCAPTCHA token.
+    @param URL The url to be parsed for a reCAPTCHA token.
+    @param error The error that occurred if any.
+    @return The reCAPTCHA token if successful.
+ */
+- (nullable NSString *)reCAPTCHATokenForURL:(NSURL *)URL error:(NSError **_Nonnull)error {
+  NSURLComponents *actualURLComponents = [NSURLComponents componentsWithURL:URL
+                                                    resolvingAgainstBaseURL:NO];
+  NSArray<NSURLQueryItem *> *queryItems = [actualURLComponents queryItems];
+  NSString *deepLinkURL = [FIRAuthWebUtils queryItemValue:@"deep_link_id" from:queryItems];
+  NSData *errorData;
+  if (deepLinkURL) {
+    actualURLComponents = [NSURLComponents componentsWithString:deepLinkURL];
+    queryItems = [actualURLComponents queryItems];
+    NSString *recaptchaToken = [FIRAuthWebUtils queryItemValue:@"recaptchaToken" from:queryItems];
+    if (recaptchaToken) {
+      return recaptchaToken;
+    }
+    NSString *firebaseError = [FIRAuthWebUtils queryItemValue:@"firebaseError" from:queryItems];
+    errorData = [firebaseError dataUsingEncoding:NSUTF8StringEncoding];
+  } else {
+    errorData = nil;
+  }
+  if (error != NULL && errorData != nil) {
+    NSError *jsonError;
+    NSDictionary *errorDict = [NSJSONSerialization JSONObjectWithData:errorData
+                                                              options:0
+                                                                error:&jsonError];
+    if (jsonError) {
+      *error = [FIRAuthErrorUtils JSONSerializationErrorWithUnderlyingError:jsonError];
+      return nil;
+    }
+    *error = [FIRAuthErrorUtils URLResponseErrorWithCode:errorDict[@"code"]
+                                                 message:errorDict[@"message"]];
+    if (!*error) {
+      NSString *reason;
+      if (errorDict[@"code"] && errorDict[@"message"]) {
+        reason =
+            [NSString stringWithFormat:@"[%@] - %@", errorDict[@"code"], errorDict[@"message"]];
+      } else {
+        reason = [NSString stringWithFormat:@"An unknown error occurred with the following "
+                                             "response: %@",
+                                            deepLinkURL];
+      }
+      *error = [FIRAuthErrorUtils appVerificationUserInteractionFailureWithReason:reason];
+    }
+  }
+  return nil;
+}
+
+/** @fn internalVerifyPhoneNumber:completion:
+    @brief Starts the phone number authentication flow by sending a verifcation code to the
+        specified phone number.
+    @param phoneNumber The phone number to be verified.
+    @param completion The callback to be invoked when the verification flow is finished.
+ */
+
+- (void)internalVerifyPhoneNumber:(NSString *)phoneNumber
+                       UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                       completion:(nullable FIRVerificationResultCallback)completion {
+  if (!phoneNumber.length) {
+    completion(nil, [FIRAuthErrorUtils missingPhoneNumberErrorWithMessage:nil]);
+    return;
+  }
+  [_auth.notificationManager
+    checkNotificationForwardingWithCallback:^(BOOL isNotificationBeingForwarded) {
+      if (!isNotificationBeingForwarded) {
+        completion(nil, [FIRAuthErrorUtils notificationNotForwardedError]);
+        return;
+      }
+      FIRVerificationResultCallback callback =
+          ^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+            if (completion) {
+              completion(verificationID, error);
+            }
+          };
+      [self verifyClientAndSendVerificationCodeToPhoneNumber:phoneNumber
+                                 retryOnInvalidAppCredential:YES
+                                                  UIDelegate:UIDelegate
+                                                    callback:callback];
+    }];
+}
+
+- (void)internalVerifyPhoneNumber:(NSString *)phoneNumber
+                       UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+               multiFactorSession:(nullable FIRMultiFactorSession *)session
+                       completion:(nullable FIRVerificationResultCallback)completion {
+  if (!phoneNumber.length) {
+    if (completion) {
+      completion(nil, [FIRAuthErrorUtils missingPhoneNumberErrorWithMessage:nil]);
+    }
+    return;
+  }
+  [_auth.notificationManager
+    checkNotificationForwardingWithCallback:^(BOOL isNotificationBeingForwarded) {
+      if (!isNotificationBeingForwarded) {
+        if (completion) {
+          completion(nil, [FIRAuthErrorUtils notificationNotForwardedError]);
+        }
+        return;
+      }
+      FIRVerificationResultCallback callback =
+          ^(NSString *_Nullable verificationID, NSError *_Nullable error) {
+            if (completion) {
+              completion(verificationID, error);
+            }
+          };
+      [self verifyClientAndSendVerificationCodeToPhoneNumber:phoneNumber
+                                 retryOnInvalidAppCredential:YES
+                                                  UIDelegate:UIDelegate
+                                          multiFactorSession:session
+                                                    callback:callback];
+    }];
+}
+
+/** @fn verifyClientAndSendVerificationCodeToPhoneNumber:retryOnInvalidAppCredential:callback:
+    @brief Starts the flow to verify the client via silent push notification.
+    @param retryOnInvalidAppCredential Whether of not the flow should be retried if an
+        FIRAuthErrorCodeInvalidAppCredential error is returned from the backend.
+    @param phoneNumber The phone number to be verified.
+    @param callback The callback to be invoked on the global work queue when the flow is
+        finished.
+ */
+- (void)verifyClientAndSendVerificationCodeToPhoneNumber:(NSString *)phoneNumber
+                             retryOnInvalidAppCredential:(BOOL)retryOnInvalidAppCredential
+                                              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                                                callback:(FIRVerificationResultCallback)callback {
+  if (_auth.settings.isAppVerificationDisabledForTesting) {
+    FIRSendVerificationCodeRequest *request =
+        [[FIRSendVerificationCodeRequest alloc] initWithPhoneNumber:phoneNumber
+                                                      appCredential:nil
+                                                     reCAPTCHAToken:nil
+                                               requestConfiguration:_auth.requestConfiguration];
+    [FIRAuthBackend sendVerificationCode:request
+                                callback:^(FIRSendVerificationCodeResponse *_Nullable response,
+                                           NSError *_Nullable error) {
+                                  callback(response.verificationID, error);
+                                }];
+    return;
+  }
+  [self
+    verifyClientWithUIDelegate:UIDelegate
+                    completion:^(FIRAuthAppCredential *_Nullable appCredential,
+                                 NSString *_Nullable reCAPTCHAToken, NSError *_Nullable error) {
+                      if (error) {
+                        callback(nil, error);
+                        return;
+                      }
+                      FIRSendVerificationCodeRequest *_Nullable request;
+                      if (appCredential) {
+                        request = [[FIRSendVerificationCodeRequest alloc]
+                             initWithPhoneNumber:phoneNumber
+                                   appCredential:appCredential
+                                  reCAPTCHAToken:nil
+                            requestConfiguration:self->_auth.requestConfiguration];
+                      } else if (reCAPTCHAToken) {
+                        request = [[FIRSendVerificationCodeRequest alloc]
+                             initWithPhoneNumber:phoneNumber
+                                   appCredential:nil
+                                  reCAPTCHAToken:reCAPTCHAToken
+                            requestConfiguration:self->_auth.requestConfiguration];
+                      }
+                      if (request) {
+                        [FIRAuthBackend
+                            sendVerificationCode:request
+                                        callback:^(
+                                            FIRSendVerificationCodeResponse *_Nullable response,
+                                            NSError *_Nullable error) {
+                                          if (error) {
+                                            if (error.code ==
+                                                FIRAuthErrorCodeInvalidAppCredential) {
+                                              if (retryOnInvalidAppCredential) {
+                                                [self->_auth.appCredentialManager clearCredential];
+                                                [self
+                                                    verifyClientAndSendVerificationCodeToPhoneNumber:
+                                                        phoneNumber
+                                                                         retryOnInvalidAppCredential:
+                                                                             NO
+                                                                                          UIDelegate:
+                                                                                              UIDelegate
+                                                                                            callback:
+                                                                                                callback];
+                                                return;
+                                              }
+                                              callback(
+                                                  nil,
+                                                  [FIRAuthErrorUtils
+                                                      unexpectedResponseWithDeserializedResponse:nil
+                                                                                 underlyingError:
+                                                                                     error]);
+                                              return;
+                                            }
+                                            callback(nil, error);
+                                            return;
+                                          }
+                                          callback(response.verificationID, nil);
+                                        }];
+                      }
+                    }];
+}
+
+- (void)verifyClientAndSendVerificationCodeToPhoneNumber:(NSString *)phoneNumber
+                             retryOnInvalidAppCredential:(BOOL)retryOnInvalidAppCredential
+                                              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                                      multiFactorSession:(nullable FIRMultiFactorSession *)session
+                                                callback:(FIRVerificationResultCallback)callback {
+  if (_auth.settings.isAppVerificationDisabledForTesting) {
+    FIRSendVerificationCodeRequest *request =
+        [[FIRSendVerificationCodeRequest alloc] initWithPhoneNumber:phoneNumber
+                                                      appCredential:nil
+                                                     reCAPTCHAToken:nil
+                                               requestConfiguration:_auth.requestConfiguration];
+    [FIRAuthBackend sendVerificationCode:request
+                                callback:^(FIRSendVerificationCodeResponse *_Nullable response,
+                                           NSError *_Nullable error) {
+                                  callback(response.verificationID, error);
+                                }];
+    return;
+  }
+
+  [self
+    verifyClientWithUIDelegate:UIDelegate
+                    completion:^(FIRAuthAppCredential *_Nullable appCredential,
+                                 NSString *_Nullable reCAPTCHAToken, NSError *_Nullable error) {
+                      if (error) {
+                        if (callback) {
+                          callback(nil, error);
+                        }
+                        return;
+                      }
+
+                      NSString *IDToken = session.IDToken;
+                      FIRAuthProtoStartMFAPhoneRequestInfo *startMFARequestInfo =
+                          [[FIRAuthProtoStartMFAPhoneRequestInfo alloc]
+                              initWithPhoneNumber:phoneNumber
+                                    appCredential:appCredential
+                                   reCAPTCHAToken:reCAPTCHAToken];
+                      if (session.IDToken) {
+                        FIRStartMFAEnrollmentRequest *request =
+                            [[FIRStartMFAEnrollmentRequest alloc]
+                                     initWithIDToken:IDToken
+                                      enrollmentInfo:startMFARequestInfo
+                                requestConfiguration:self->_auth.requestConfiguration];
+                        [FIRAuthBackend
+                            startMultiFactorEnrollment:request
+                                              callback:^(
+                                                  FIRStartMFAEnrollmentResponse *_Nullable response,
+                                                  NSError *_Nullable error) {
+                                                if (error) {
+                                                  if (error.code ==
+                                                      FIRAuthErrorCodeInvalidAppCredential) {
+                                                    if (retryOnInvalidAppCredential) {
+                                                      [self->_auth.appCredentialManager
+                                                              clearCredential];
+                                                      [self
+                                                          verifyClientAndSendVerificationCodeToPhoneNumber:
+                                                              phoneNumber
+                                                                               retryOnInvalidAppCredential:
+                                                                                   NO
+                                                                                                UIDelegate:
+                                                                                                    UIDelegate
+                                                                                        multiFactorSession:
+                                                                                            session
+                                                                                                  callback:
+                                                                                                      callback];
+                                                      return;
+                                                    }
+                                                    if (callback) {
+                                                      callback(
+                                                          nil,
+                                                          [FIRAuthErrorUtils
+                                                              unexpectedResponseWithDeserializedResponse:
+                                                                  nil
+                                                                                         underlyingError:
+                                                                                             error]);
+                                                    }
+                                                    return;
+                                                  } else {
+                                                    if (callback) {
+                                                      callback(nil, error);
+                                                    }
+                                                  }
+                                                } else {
+                                                  if (callback) {
+                                                    callback(
+                                                        response.enrollmentResponse.sessionInfo,
+                                                        nil);
+                                                  }
+                                                }
+                                              }];
+                      } else {
+                        FIRStartMFASignInRequest *request = [[FIRStartMFASignInRequest alloc]
+                            initWithMFAPendingCredential:session.MFAPendingCredential
+                                         MFAEnrollmentID:session.multiFactorInfo.UID
+                                              signInInfo:startMFARequestInfo
+                                    requestConfiguration:self->_auth.requestConfiguration];
+                        [FIRAuthBackend
+                            startMultiFactorSignIn:request
+                                          callback:^(FIRStartMFASignInResponse *_Nullable response,
+                                                     NSError *_Nullable error) {
+                                            if (error) {
+                                              if (error.code ==
+                                                  FIRAuthErrorCodeInvalidAppCredential) {
+                                                if (retryOnInvalidAppCredential) {
+                                                  [self->_auth
+                                                          .appCredentialManager clearCredential];
+                                                  [self
+                                                      verifyClientAndSendVerificationCodeToPhoneNumber:
+                                                          phoneNumber
+                                                                           retryOnInvalidAppCredential:
+                                                                               NO
+                                                                                            UIDelegate:
+                                                                                                UIDelegate
+                                                                                    multiFactorSession:
+                                                                                        session
+                                                                                              callback:
+                                                                                                  callback];
+                                                  return;
+                                                }
+                                                if (callback) {
+                                                  callback(
+                                                      nil,
+                                                      [FIRAuthErrorUtils
+                                                          unexpectedResponseWithDeserializedResponse:
+                                                              nil
+                                                                                     underlyingError:
+                                                                                         error]);
+                                                }
+                                                return;
+                                              } else {
+                                                if (callback) {
+                                                  callback(nil, error);
+                                                }
+                                              }
+                                            } else {
+                                              if (callback) {
+                                                callback(response.responseInfo.sessionInfo, nil);
+                                              }
+                                            }
+                                          }];
+                      }
+                    }];
+}
+
+/** @fn verifyClientWithCompletion:completion:
+    @brief Continues the flow to verify the client via silent push notification.
+    @param completion The callback to be invoked when the client verification flow is finished.
+ */
+- (void)verifyClientWithUIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                        completion:(FIRVerifyClientCallback)completion {
+  if (_auth.appCredentialManager.credential) {
+    completion(_auth.appCredentialManager.credential, nil, nil);
+    return;
+  }
+  [_auth.tokenManager getTokenWithCallback:^(FIRAuthAPNSToken *_Nullable token,
+                                             NSError *_Nullable error) {
+    if (!token) {
+      [self reCAPTCHAFlowWithUIDelegate:UIDelegate completion:completion];
+      return;
+    }
+    FIRVerifyClientRequest *request =
+        [[FIRVerifyClientRequest alloc] initWithAppToken:token.string
+                                               isSandbox:token.type == FIRAuthAPNSTokenTypeSandbox
+                                    requestConfiguration:self->_auth.requestConfiguration];
+    [FIRAuthBackend
+        verifyClient:request
+            callback:^(FIRVerifyClientResponse *_Nullable response, NSError *_Nullable error) {
+              if (error) {
+                NSError *underlyingError = error.userInfo[NSUnderlyingErrorKey];
+                BOOL isInvalidAppCredential =
+                    error.code == FIRAuthErrorCodeInternalError &&
+                    underlyingError.code == FIRAuthErrorCodeInvalidAppCredential;
+                if (error.code != FIRAuthErrorCodeMissingAppToken && !isInvalidAppCredential) {
+                  completion(nil, nil, error);
+                  return;
+                } else {
+                  [self reCAPTCHAFlowWithUIDelegate:UIDelegate completion:completion];
+                  return;
+                }
+              }
+              NSTimeInterval timeout = [response.suggestedTimeOutDate timeIntervalSinceNow];
+              [self->_auth.appCredentialManager
+                  didStartVerificationWithReceipt:response.receipt
+                                          timeout:timeout
+                                         callback:^(FIRAuthAppCredential *credential) {
+                                           if (!credential.secret) {
+                                             FIRLogWarning(kFIRLoggerAuth, @"I-AUT000014",
+                                                           @"Failed to receive remote notification "
+                                                           @"to verify app identity within "
+                                                           @"%.0f second(s), falling back to "
+                                                           @"reCAPTCHA verification.",
+                                                           timeout);
+                                             [self reCAPTCHAFlowWithUIDelegate:UIDelegate
+                                                                    completion:completion];
+                                             return;
+                                           }
+                                           completion(credential, nil, nil);
+                                         }];
+            }];
+  }];
+}
+
+- (void)reCAPTCHAFlowWithUIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                         completion:(FIRVerifyClientCallback)completion {
+  NSString *eventID = [FIRAuthWebUtils randomStringWithLength:10];
+  [self
+      reCAPTCHAURLWithEventID:eventID
+                   completion:^(NSURL *_Nullable reCAPTCHAURL, NSError *_Nullable error) {
+                     if (error) {
+                       completion(nil, nil, error);
+                       return;
+                     }
+                     FIRAuthURLCallbackMatcher callbackMatcher =
+                         ^BOOL(NSURL *_Nullable callbackURL) {
+                           return [FIRAuthWebUtils isExpectedCallbackURL:callbackURL
+                                                                 eventID:eventID
+                                                                authType:kAuthTypeVerifyApp
+                                                          callbackScheme:self->_callbackScheme];
+                         };
+                     [self->_auth.authURLPresenter
+                              presentURL:reCAPTCHAURL
+                              UIDelegate:UIDelegate
+                         callbackMatcher:callbackMatcher
+                              completion:^(NSURL *_Nullable callbackURL, NSError *_Nullable error) {
+                                if (error) {
+                                  completion(nil, nil, error);
+                                  return;
+                                }
+                                NSError *reCAPTCHAError;
+                                NSString *reCAPTCHAToken =
+                                    [self reCAPTCHATokenForURL:callbackURL error:&reCAPTCHAError];
+                                if (!reCAPTCHAToken) {
+                                  completion(nil, nil, reCAPTCHAError);
+                                  return;
+                                } else {
+                                  completion(nil, reCAPTCHAToken, nil);
+                                  return;
+                                }
+                              }];
+                   }];
+}
+
+/** @fn reCAPTCHAURLWithEventID:completion:
+    @brief Constructs a URL used for opening a reCAPTCHA app verification flow using a given event
+        ID.
+    @param eventID The event ID used for this purpose.
+    @param completion The callback invoked after the URL has been constructed or an error
+        has been encountered.
+ */
+- (void)reCAPTCHAURLWithEventID:(NSString *)eventID completion:(FIRReCAPTCHAURLCallBack)completion {
+  [FIRAuthWebUtils
+      fetchAuthDomainWithRequestConfiguration:_auth.requestConfiguration
+                                   completion:^(NSString *_Nullable authDomain,
+                                                NSError *_Nullable error) {
+                                     if (error) {
+                                       if (completion) {
+                                         completion(nil, error);
+                                         return;
+                                       }
+                                     }
+                                     NSString *bundleID = [NSBundle mainBundle].bundleIdentifier;
+                                     NSString *clientID = self->_auth.app.options.clientID;
+                                     NSString *appID = self->_auth.app.options.googleAppID;
+                                     NSString *apiKey = self->_auth.requestConfiguration.APIKey;
+                                     NSMutableArray<NSURLQueryItem *> *queryItems = [@[
+                                       [NSURLQueryItem queryItemWithName:@"apiKey" value:apiKey],
+                                       [NSURLQueryItem queryItemWithName:@"authType"
+                                                                   value:kAuthTypeVerifyApp],
+                                       [NSURLQueryItem queryItemWithName:@"ibi"
+                                                                   value:bundleID ?: @""],
+                                       [NSURLQueryItem
+                                           queryItemWithName:@"v"
+                                                       value:[FIRAuthBackend authUserAgent]],
+                                       [NSURLQueryItem queryItemWithName:@"eventId" value:eventID]
+                                     ] mutableCopy];
+                                     if (self->_usingClientIDScheme) {
+                                       [queryItems
+                                           addObject:[NSURLQueryItem queryItemWithName:@"clientId"
+                                                                                 value:clientID]];
+                                     } else {
+                                       [queryItems
+                                           addObject:[NSURLQueryItem queryItemWithName:@"appId"
+                                                                                 value:appID]];
+                                     }
+
+                                     if (self->_auth.requestConfiguration.languageCode) {
+                                       [queryItems
+                                           addObject:[NSURLQueryItem
+                                                         queryItemWithName:@"hl"
+                                                                     value:self->_auth
+                                                                               .requestConfiguration
+                                                                               .languageCode]];
+                                     }
+                                     NSURLComponents *components = [[NSURLComponents alloc]
+                                         initWithString:
+                                             [NSString stringWithFormat:kReCAPTCHAURLStringFormat,
+                                                                        authDomain]];
+                                     [components setQueryItems:queryItems];
+                                     if (completion) {
+                                       completion([components URL], nil);
+                                     }
+                                   }];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.h
new file mode 100644
index 0000000..ad25dc6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRTwitterAuthCredential
+    @brief Internal implementation of FIRAuthCredential for Twitter credentials.
+ */
+@interface FIRTwitterAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @property token
+    @brief The Twitter OAuth token.
+ */
+@property(nonatomic, readonly) NSString *token;
+
+/** @property secret
+    @brief The Twitter OAuth secret.
+ */
+@property(nonatomic, readonly) NSString *secret;
+
+/** @fn initWithToken:secret:
+    @brief Designated initializer.
+    @param token The Twitter OAuth token.
+    @param secret The Twitter OAuth secret.
+ */
+- (nullable instancetype)initWithToken:(NSString *)token
+                                secret:(NSString *)secret NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.m
new file mode 100644
index 0000000..255e344
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.m	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRTwitterAuthProvider.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRTwitterAuthCredential ()
+
+- (nullable instancetype)initWithProvider:(NSString *)provider NS_UNAVAILABLE;
+
+@end
+
+@implementation FIRTwitterAuthCredential
+
+- (nullable instancetype)initWithProvider:(NSString *)provider {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"Please call the designated initializer."];
+  return nil;
+}
+
+- (nullable instancetype)initWithToken:(NSString *)token secret:(NSString *)secret {
+  self = [super initWithProvider:FIRTwitterAuthProviderID];
+  if (self) {
+    _token = [token copy];
+    _secret = [secret copy];
+  }
+  return self;
+}
+
+- (void)prepareVerifyAssertionRequest:(FIRVerifyAssertionRequest *)request {
+  request.providerAccessToken = _token;
+  request.providerOAuthTokenSecret = _secret;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *token = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"token"];
+  NSString *secret = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"secret"];
+  self = [self initWithToken:token secret:secret];
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:self.token forKey:@"token"];
+  [aCoder encodeObject:self.secret forKey:@"secret"];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthProvider.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthProvider.m
new file mode 100644
index 0000000..27483e0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthProvider.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRTwitterAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Twitter/FIRTwitterAuthCredential.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+// FIRTwitterAuthProviderID is defined in FIRAuthProvider.m.
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRTwitterAuthProvider
+
+- (instancetype)init {
+  [FIRAuthExceptionUtils
+      raiseMethodNotImplementedExceptionWithReason:@"This class is not meant to be initialized."];
+  return nil;
+}
+
++ (FIRAuthCredential *)credentialWithToken:(NSString *)token secret:(NSString *)secret {
+  return [[FIRTwitterAuthCredential alloc] initWithToken:token secret:secret];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h
new file mode 100644
index 0000000..8ed6253
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h	
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRStartMFAEnrollmentResponseCallback
+    @brief The type of block used to return the result of a call to the startMFAEnroll endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+*/
+typedef void (^FIRStartMFAEnrollmentResponseCallback)(
+    FIRStartMFAEnrollmentResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRFinalizeMFAEnrollmentResponseCallback
+    @brief The type of block used to return the result of a call to the finalizeMFAEnroll endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+*/
+typedef void (^FIRFinalizeMFAEnrollmentResponseCallback)(
+    FIRFinalizeMFAEnrollmentResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRStartMFASignInResponseCallback
+    @brief The type of block used to return the result of a call to the startMFASignIn endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+*/
+typedef void (^FIRStartMFASignInResponseCallback)(FIRStartMFASignInResponse *_Nullable response,
+                                                  NSError *_Nullable error);
+
+/** @typedef FIRFinalizeMFASignInResponseCallback
+    @brief The type of block used to return the result of a call to the finalizeMFASignIn endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+*/
+typedef void (^FIRFinalizeMFASignInResponseCallback)(
+    FIRFinalizeMFASignInResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRWithdrawMFAResponseCallback
+    @brief The type of block used to return the result of a call to the MFAUnenroll endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+*/
+typedef void (^FIRWithdrawMFAResponseCallback)(FIRWithdrawMFAResponse *_Nullable response,
+                                               NSError *_Nullable error);
+
+@interface FIRAuthBackend (MultiFactor)
+
+/** @fn startMultiFactorEnrollment:callback:
+    @brief Calls the startMFAEnrollment endpoint.
+    @param request The request parameters.
+    @param callback The callback.
+*/
++ (void)startMultiFactorEnrollment:(FIRStartMFAEnrollmentRequest *)request
+                          callback:(FIRStartMFAEnrollmentResponseCallback)callback;
+
+/** @fn finalizeMultiFactorEnrollment:callback:
+    @brief Calls the finalizeMultiFactorEnrollment endpoint.
+    @param request The request parameters.
+    @param callback The callback.
+*/
++ (void)finalizeMultiFactorEnrollment:(FIRFinalizeMFAEnrollmentRequest *)request
+                             callback:(FIRFinalizeMFAEnrollmentResponseCallback)callback;
+
+/** @fn startMultiFactorSignIn:callback:
+    @brief Calls the startMultiFactorSignIn endpoint.
+    @param request The request parameters.
+    @param callback The callback.
+*/
++ (void)startMultiFactorSignIn:(FIRStartMFASignInRequest *)request
+                      callback:(FIRStartMFASignInResponseCallback)callback;
+
+/** @fn finalizeMultiFactorSignIn:callback:
+    @brief Calls the finalizeMultiFactorSignIn endpoint.
+    @param request The request parameters.
+    @param callback The callback.
+*/
++ (void)finalizeMultiFactorSignIn:(FIRFinalizeMFASignInRequest *)request
+                         callback:(FIRFinalizeMFASignInResponseCallback)callback;
+
+/** @fn withdrawMultiFactor:callback:
+    @brief Calls the withdrawMultiFactor endpoint.
+    @param request The request parameters.
+    @param callback The callback.
+*/
++ (void)withdrawMultiFactor:(FIRWithdrawMFARequest *)request
+                   callback:(FIRWithdrawMFAResponseCallback)callback;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.m
new file mode 100644
index 0000000..7c305a4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.m	
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h"
+
+@implementation FIRAuthBackend (MultiFactor)
+
++ (void)startMultiFactorEnrollment:(FIRStartMFAEnrollmentRequest *)request
+                          callback:(FIRStartMFAEnrollmentResponseCallback)callback {
+  FIRStartMFAEnrollmentResponse *response = [[FIRStartMFAEnrollmentResponse alloc] init];
+  [[self implementation] postWithRequest:request
+                                response:response
+                                callback:^(NSError *error) {
+                                  if (error) {
+                                    callback(nil, error);
+                                  } else {
+                                    callback(response, nil);
+                                  }
+                                }];
+}
+
++ (void)finalizeMultiFactorEnrollment:(FIRFinalizeMFAEnrollmentRequest *)request
+                             callback:(FIRFinalizeMFAEnrollmentResponseCallback)callback {
+  FIRFinalizeMFAEnrollmentResponse *response = [[FIRFinalizeMFAEnrollmentResponse alloc] init];
+  [[self implementation] postWithRequest:request
+                                response:response
+                                callback:^(NSError *error) {
+                                  if (error) {
+                                    callback(nil, error);
+                                  } else {
+                                    callback(response, nil);
+                                  }
+                                }];
+}
+
++ (void)startMultiFactorSignIn:(FIRStartMFASignInRequest *)request
+                      callback:(FIRStartMFASignInResponseCallback)callback {
+  FIRStartMFASignInResponse *response = [[FIRStartMFASignInResponse alloc] init];
+  [[self implementation] postWithRequest:request
+                                response:response
+                                callback:^(NSError *error) {
+                                  if (error) {
+                                    callback(nil, error);
+                                  } else {
+                                    callback(response, nil);
+                                  }
+                                }];
+}
+
++ (void)finalizeMultiFactorSignIn:(FIRFinalizeMFASignInRequest *)request
+                         callback:(FIRFinalizeMFASignInResponseCallback)callback {
+  FIRFinalizeMFASignInResponse *response = [[FIRFinalizeMFASignInResponse alloc] init];
+  [[self implementation] postWithRequest:request
+                                response:response
+                                callback:^(NSError *error) {
+                                  if (error) {
+                                    callback(nil, error);
+                                  } else {
+                                    callback(response, nil);
+                                  }
+                                }];
+}
+
++ (void)withdrawMultiFactor:(FIRWithdrawMFARequest *)request
+                   callback:(FIRWithdrawMFAResponseCallback)callback {
+  FIRWithdrawMFAResponse *response = [[FIRWithdrawMFAResponse alloc] init];
+  [[self implementation] postWithRequest:request
+                                response:response
+                                callback:^(NSError *error) {
+                                  if (error) {
+                                    callback(nil, error);
+                                  } else {
+                                    callback(response, nil);
+                                  }
+                                }];
+}
+
+@end
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.h
new file mode 100644
index 0000000..d3e9bca
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.h	
@@ -0,0 +1,620 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+@class FIRAuthRequestConfiguration;
+@class FIRCreateAuthURIRequest;
+@class FIRCreateAuthURIResponse;
+@class FIRDeleteAccountRequest;
+@class FIRDeleteAccountResponse;
+@class FIREmailLinkSignInRequest;
+@class FIREmailLinkSignInResponse;
+@class FIRGetAccountInfoRequest;
+@class FIRGetAccountInfoResponse;
+@class FIRGetProjectConfigRequest;
+@class FIRGetProjectConfigResponse;
+@class FIRGetOOBConfirmationCodeRequest;
+@class FIRGetOOBConfirmationCodeResponse;
+@class FIRResetPasswordRequest;
+@class FIRResetPasswordResponse;
+@class FIRSecureTokenRequest;
+@class FIRSecureTokenResponse;
+@class FIRSetAccountInfoRequest;
+@class FIRSetAccountInfoResponse;
+@class FIRVerifyAssertionRequest;
+@class FIRVerifyAssertionResponse;
+@class FIRVerifyClientRequest;
+@class FIRVerifyClientResponse;
+@class FIRVerifyCustomTokenRequest;
+@class FIRVerifyCustomTokenResponse;
+@class FIRVerifyPasswordRequest;
+@class FIRVerifyPasswordResponse;
+@class FIRVerifyPhoneNumberRequest;
+@class FIRVerifyPhoneNumberResponse;
+@class FIRSendVerificationCodeRequest;
+@class FIRSendVerificationCodeResponse;
+@class FIRSignInWithGameCenterRequest;
+@class FIRSignInWithGameCenterResponse;
+@class FIRSignUpNewUserRequest;
+@class FIRSignUpNewUserResponse;
+
+@protocol FIRAuthBackendImplementation;
+@protocol FIRAuthBackendRPCIssuer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthBackendRPCIssuerCompletionHandler
+    @brief The type of block used to return the result of a call to an endpoint.
+    @param data The HTTP response body.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRAuthBackendRPCIssuerCompletionHandler)(NSData *_Nullable data,
+                                                         NSError *_Nullable error);
+
+/** @typedef FIRCreateAuthURIResponseCallback
+    @brief The type of block used to return the result of a call to the createAuthURI
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRCreateAuthURIResponseCallback)(FIRCreateAuthURIResponse *_Nullable response,
+                                                 NSError *_Nullable error);
+
+/** @typedef FIRGetAccountInfoResponseCallback
+    @brief The type of block used to return the result of a call to the getAccountInfo
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRGetAccountInfoResponseCallback)(FIRGetAccountInfoResponse *_Nullable response,
+                                                  NSError *_Nullable error);
+
+/** @typedef FIRGetProjectConfigResponseCallback
+    @brief The type of block used to return the result of a call to the getProjectInfo
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRGetProjectConfigResponseCallback)(FIRGetProjectConfigResponse *_Nullable response,
+                                                    NSError *_Nullable error);
+
+/** @typedef FIRSetAccountInfoResponseCallback
+    @brief The type of block used to return the result of a call to the setAccountInfo
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRSetAccountInfoResponseCallback)(FIRSetAccountInfoResponse *_Nullable response,
+                                                  NSError *_Nullable error);
+
+/** @typedef FIRSecureTokenResponseCallback
+    @brief The type of block used to return the result of a call to the token endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRSecureTokenResponseCallback)(FIRSecureTokenResponse *_Nullable response,
+                                               NSError *_Nullable error);
+
+/** @typedef FIRVerifyAssertionResponseCallback
+    @brief The type of block used to return the result of a call to the verifyAssertion
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRVerifyAssertionResponseCallback)(FIRVerifyAssertionResponse *_Nullable response,
+                                                   NSError *_Nullable error);
+
+/** @typedef FIRVerifyPasswordResponseCallback
+    @brief The type of block used to return the result of a call to the verifyPassword
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRVerifyPasswordResponseCallback)(FIRVerifyPasswordResponse *_Nullable response,
+                                                  NSError *_Nullable error);
+
+/** @typedef FIREmailLinkSigninResponseCallback
+    @brief The type of block used to return the result of a call to the emailLinkSignin
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIREmailLinkSigninResponseCallback)(FIREmailLinkSignInResponse *_Nullable response,
+                                                   NSError *_Nullable error);
+
+/** @typedef FIRVerifyCustomTokenResponseCallback
+    @brief The type of block used to return the result of a call to the verifyCustomToken
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRVerifyCustomTokenResponseCallback)(
+    FIRVerifyCustomTokenResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRDeleteCallBack
+    @brief The type of block called when a request delete account has finished.
+    @param error The error which occurred, or nil if the request was successful.
+ */
+typedef void (^FIRDeleteCallBack)(NSError *_Nullable error);
+
+/** @typedef FIRGetOOBConfirmationCodeResponseCallback
+    @brief The type of block used to return the result of a call to the getOOBConfirmationCode
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRGetOOBConfirmationCodeResponseCallback)(
+    FIRGetOOBConfirmationCodeResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRSignupNewUserCallback
+    @brief The type of block used to return the result of a call to the signupNewUser endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRSignupNewUserCallback)(FIRSignUpNewUserResponse *_Nullable response,
+                                         NSError *_Nullable error);
+
+/** @typedef FIRResetPasswordCallback
+    @brief The type of block used to return the result of a call to the resetPassword endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRResetPasswordCallback)(FIRResetPasswordResponse *_Nullable response,
+                                         NSError *_Nullable error);
+
+/** @typedef FIRSendVerificationCodeResponseCallback
+    @brief The type of block used to return the result of a call to the sendVerificationCode
+        endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRSendVerificationCodeResponseCallback)(
+    FIRSendVerificationCodeResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRVerifyPhoneNumberResponseCallback
+    @brief The type of block used to return the result of a call to the verifyPhoneNumber endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRVerifyPhoneNumberResponseCallback)(
+    FIRVerifyPhoneNumberResponse *_Nullable response, NSError *_Nullable error);
+
+/** @typedef FIRVerifyClientResponseCallback
+    @brief The type of block used to return the result of a call to the verifyClient endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRVerifyClientResponseCallback)(FIRVerifyClientResponse *_Nullable response,
+                                                NSError *_Nullable error);
+
+/** @typedef FIRSignInWithGameCenterResponseCallback
+    @brief The type of block used to return the result of a call to the SignInWithGameCenter
+   endpoint.
+    @param response The received response, if any.
+    @param error The error which occurred, if any.
+    @remarks One of response or error will be non-nil.
+ */
+typedef void (^FIRSignInWithGameCenterResponseCallback)(
+    FIRSignInWithGameCenterResponse *_Nullable response, NSError *_Nullable error);
+
+/** @class FIRAuthBackend
+    @brief Simple static class with methods representing the backend RPCs.
+    @remarks All callback blocks passed as method parameters are invoked asynchronously on the
+        global work queue in the future. See
+        https://github.com/firebase/firebase-ios-sdk/tree/master/FirebaseAuth/Docs/threading.md
+ */
+@interface FIRAuthBackend : NSObject
+
+/** @fn authUserAgent
+    @brief Retrieves the Firebase Auth user agent.
+    @return The Firebase Auth user agent.
+ */
++ (NSString *)authUserAgent;
+
++ (id<FIRAuthBackendImplementation>)implementation;
+
+/** @fn setBackendImplementation:
+    @brief Changes the default backend implementation to something else.
+    @param backendImplementation The backend implementation to use.
+    @remarks This is not, generally, safe to call in a scenario where other backend requests may
+        be occuring. This is specifically to help mock the backend for testing purposes.
+ */
++ (void)setBackendImplementation:(id<FIRAuthBackendImplementation>)backendImplementation;
+
+/** @fn setDefaultBackendImplementationWithRPCIssuer:
+    @brief Uses the default backend implementation, but with a custom RPC issuer.
+    @param RPCIssuer The RPC issuer to use. If @c nil, will use the default implementation.
+    @remarks This is not, generally, safe to call in a scenario where other backend requests may
+        be occuring. This is specifically to help test the backend interfaces (requests, responses,
+        and shared FIRAuthBackend logic.)
+ */
++ (void)setDefaultBackendImplementationWithRPCIssuer:
+    (nullable id<FIRAuthBackendRPCIssuer>)RPCIssuer;
+
+/** @fn createAuthURI:callback:
+    @brief Calls the createAuthURI endpoint, which is responsible for creating the URI used by the
+        IdP to authenticate the user.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)createAuthURI:(FIRCreateAuthURIRequest *)request
+             callback:(FIRCreateAuthURIResponseCallback)callback;
+
+/** @fn getAccountInfo:callback:
+    @brief Calls the getAccountInfo endpoint, which returns account info for a given account.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)getAccountInfo:(FIRGetAccountInfoRequest *)request
+              callback:(FIRGetAccountInfoResponseCallback)callback;
+
+/** @fn getProjectConfig:callback:
+    @brief Calls the getProjectConfig endpoint, which returns configuration information for a given
+        project.
+    @param request An object wrapping the backend get request.
+    @param callback The callback.
+ */
++ (void)getProjectConfig:(FIRGetProjectConfigRequest *)request
+                callback:(FIRGetProjectConfigResponseCallback)callback;
+
+/** @fn setAccountInfo:callback:
+    @brief Calls the setAccountInfo endpoint, which is responsible for setting account info for a
+        user, for example, to sign up a new user with email and password.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)setAccountInfo:(FIRSetAccountInfoRequest *)request
+              callback:(FIRSetAccountInfoResponseCallback)callback;
+
+/** @fn verifyAssertion:callback:
+    @brief Calls the verifyAssertion endpoint, which is responsible for authenticating a
+        user who has IDP-related credentials (an ID Token, an Access Token, etc.)
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)verifyAssertion:(FIRVerifyAssertionRequest *)request
+               callback:(FIRVerifyAssertionResponseCallback)callback;
+
+/** @fn verifyCustomToken:callback:
+    @brief Calls the verifyCustomToken endpoint, which is responsible for authenticating a
+        user who has BYOAuth credentials (a self-signed token using their BYOAuth private key.)
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)verifyCustomToken:(FIRVerifyCustomTokenRequest *)request
+                 callback:(FIRVerifyCustomTokenResponseCallback)callback;
+
+/** @fn verifyPassword:callback:
+    @brief Calls the verifyPassword endpoint, which is responsible for authenticating a
+        user who has email and password credentials.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)verifyPassword:(FIRVerifyPasswordRequest *)request
+              callback:(FIRVerifyPasswordResponseCallback)callback;
+
+/** @fn emailLinkSignin:callback:
+    @brief Calls the emailLinkSignin endpoint, which is responsible for authenticating a
+        user through passwordless sign-in.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)emailLinkSignin:(FIREmailLinkSignInRequest *)request
+               callback:(FIREmailLinkSigninResponseCallback)callback;
+
+/** @fn secureToken:callback:
+    @brief Calls the token endpoint, which is responsible for performing STS token exchanges and
+        token refreshes.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)secureToken:(FIRSecureTokenRequest *)request
+           callback:(FIRSecureTokenResponseCallback)callback;
+
+/** @fn getOOBConfirmationCode:callback:
+    @brief Calls the getOOBConfirmationCode endpoint, which is responsible for sending email change
+        request emails, and password reset emails.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)getOOBConfirmationCode:(FIRGetOOBConfirmationCodeRequest *)request
+                      callback:(FIRGetOOBConfirmationCodeResponseCallback)callback;
+
+/** @fn signUpNewUser:
+    @brief Calls the signUpNewUser endpoint, which is responsible anonymously signing up a user
+        or signing in a user anonymously.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)signUpNewUser:(FIRSignUpNewUserRequest *)request
+             callback:(FIRSignupNewUserCallback)callback;
+
+/** @fn resetPassword:callback
+    @brief Calls the resetPassword endpoint, which is responsible for resetting a user's password
+      given an OOB code and new password.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)resetPassword:(FIRResetPasswordRequest *)request
+             callback:(FIRResetPasswordCallback)callback;
+
+/** @fn deleteAccount:
+    @brief Calls the DeleteAccount endpoint, which is responsible for deleting a user.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)deleteAccount:(FIRDeleteAccountRequest *)request callback:(FIRDeleteCallBack)callback;
+
+/** @fn SignInWithGameCenter:callback:
+    @brief Calls the SignInWithGameCenter endpoint, which is responsible for authenticating a user
+      who has Game Center credentials.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)signInWithGameCenter:(FIRSignInWithGameCenterRequest *)request
+                    callback:(FIRSignInWithGameCenterResponseCallback)callback;
+
+#if TARGET_OS_IOS
+/** @fn sendVerificationCode:callback:
+    @brief Calls the sendVerificationCode endpoint, which is responsible for sending the
+        verification code to a phone number specified in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)sendVerificationCode:(FIRSendVerificationCodeRequest *)request
+                    callback:(FIRSendVerificationCodeResponseCallback)callback;
+
+/** @fn verifyPhoneNumber:callback:
+    @brief Calls the verifyPhoneNumber endpoint, which is responsible for sending the verification
+        code to a phone number specified in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)verifyPhoneNumber:(FIRVerifyPhoneNumberRequest *)request
+                 callback:(FIRVerifyPhoneNumberResponseCallback)callback;
+
+/** @fn verifyClient:callback:
+    @brief Calls the verifyClient endpoint, which is responsible for sending the silent push
+        notification used for app validation to the device provided in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
++ (void)verifyClient:(FIRVerifyClientRequest *)request
+            callback:(FIRVerifyClientResponseCallback)callback;
+#endif
+
+@end
+
+/** @protocol FIRAuthBackendRPCIssuer
+    @brief Used to make FIRAuthBackend
+ */
+@protocol FIRAuthBackendRPCIssuer <NSObject>
+
+/** @fn asyncPostToURLWithRequestConfiguration:URL:body:contentType:completionHandler:
+    @brief Asynchronously seXnds a POST request.
+    @param requestConfiguration The request to be made.
+    @param URL The request URL.
+    @param body Request body.
+    @param contentType Content type of the body.
+    @param handler provided that handles POST response. Invoked asynchronously on the auth global
+        work queue in the future.
+ */
+- (void)asyncPostToURLWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                           URL:(NSURL *)URL
+                                          body:(nullable NSData *)body
+                                   contentType:(NSString *)contentType
+                             completionHandler:(FIRAuthBackendRPCIssuerCompletionHandler)handler;
+
+@end
+
+/** @protocol FIRAuthBackendImplementation
+    @brief Used to make FIRAuthBackend provide a layer of indirection to an actual RPC-based backend
+        or a mock backend.
+ */
+@protocol FIRAuthBackendImplementation <NSObject>
+
+/** @fn createAuthURI:callback:
+    @brief Calls the createAuthURI endpoint, which is responsible for creating the URI used by the
+        IdP to authenticate the user.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)createAuthURI:(FIRCreateAuthURIRequest *)request
+             callback:(FIRCreateAuthURIResponseCallback)callback;
+
+/** @fn getAccountInfo:callback:
+    @brief Calls the getAccountInfo endpoint, which returns account info for a given account.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)getAccountInfo:(FIRGetAccountInfoRequest *)request
+              callback:(FIRGetAccountInfoResponseCallback)callback;
+
+/** @fn getProjectConfig:callback:
+    @brief Calls the getProjectInfo endpoint, which returns configuration information for a given
+        project.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)getProjectConfig:(FIRGetProjectConfigRequest *)request
+                callback:(FIRGetProjectConfigResponseCallback)callback;
+
+/** @fn setAccountInfo:callback:
+    @brief Calls the setAccountInfo endpoint, which is responsible for setting account info for a
+        user, for example, to sign up a new user with email and password.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)setAccountInfo:(FIRSetAccountInfoRequest *)request
+              callback:(FIRSetAccountInfoResponseCallback)callback;
+
+/** @fn verifyAssertion:callback:
+    @brief Calls the verifyAssertion endpoint, which is responsible for authenticating a
+        user who has IDP-related credentials (an ID Token, an Access Token, etc.)
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)verifyAssertion:(FIRVerifyAssertionRequest *)request
+               callback:(FIRVerifyAssertionResponseCallback)callback;
+
+/** @fn verifyCustomToken:callback:
+    @brief Calls the verifyCustomToken endpoint, which is responsible for authenticating a
+        user who has BYOAuth credentials (a self-signed token using their BYOAuth private key.)
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)verifyCustomToken:(FIRVerifyCustomTokenRequest *)request
+                 callback:(FIRVerifyCustomTokenResponseCallback)callback;
+
+/** @fn verifyPassword:callback:
+    @brief Calls the verifyPassword endpoint, which is responsible for authenticating a
+        user who has email and password credentials.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)verifyPassword:(FIRVerifyPasswordRequest *)request
+              callback:(FIRVerifyPasswordResponseCallback)callback;
+
+/** @fn emailLinkSignin:callback:
+    @brief Calls the emailLinkSignin endpoint, which is responsible for authenticating a
+        user through passwordless sign-in.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)emailLinkSignin:(FIREmailLinkSignInRequest *)request
+               callback:(FIREmailLinkSigninResponseCallback)callback;
+
+/** @fn secureToken:callback:
+    @brief Calls the token endpoint, which is responsible for performing STS token exchanges and
+        token refreshes.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)secureToken:(FIRSecureTokenRequest *)request
+           callback:(FIRSecureTokenResponseCallback)callback;
+
+/** @fn getOOBConfirmationCode:callback:
+    @brief Calls the getOOBConfirmationCode endpoint, which is responsible for sending email change
+        request emails, email sign-in link emails, and password reset emails.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)getOOBConfirmationCode:(FIRGetOOBConfirmationCodeRequest *)request
+                      callback:(FIRGetOOBConfirmationCodeResponseCallback)callback;
+
+/** @fn signUpNewUser:
+    @brief Calls the signUpNewUser endpoint, which is responsible anonymously signing up a user
+        or signing in a user anonymously.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)signUpNewUser:(FIRSignUpNewUserRequest *)request
+             callback:(FIRSignupNewUserCallback)callback;
+
+/** @fn deleteAccount:
+    @brief Calls the DeleteAccount endpoint, which is responsible for deleting a user.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)deleteAccount:(FIRDeleteAccountRequest *)request callback:(FIRDeleteCallBack)callback;
+
+#if TARGET_OS_IOS
+/** @fn sendVerificationCode:callback:
+    @brief Calls the sendVerificationCode endpoint, which is responsible for sending the
+        verification code to a phone number specified in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)sendVerificationCode:(FIRSendVerificationCodeRequest *)request
+                    callback:(FIRSendVerificationCodeResponseCallback)callback;
+
+/** @fn verifyPhoneNumber:callback:
+    @brief Calls the verifyPhoneNumber endpoint, which is responsible for sending the verification
+        code to a phone number specified in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)verifyPhoneNumber:(FIRVerifyPhoneNumberRequest *)request
+                 callback:(FIRVerifyPhoneNumberResponseCallback)callback;
+
+/** @fn verifyClient:callback:
+    @brief Calls the verifyClient endpoint, which is responsible for sending the silent push
+        notification used for app validation to the device provided in the request parameters.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)verifyClient:(FIRVerifyClientRequest *)request
+            callback:(FIRVerifyClientResponseCallback)callback;
+#endif
+
+/** @fn SignInWithGameCenter:callback:
+    @brief Calls the SignInWithGameCenter endpoint, which is responsible for authenticating a user
+      who has Game Center credentials.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)signInWithGameCenter:(FIRSignInWithGameCenterRequest *)request
+                    callback:(FIRSignInWithGameCenterResponseCallback)callback;
+
+/** @fn resetPassword:callback
+    @brief Calls the resetPassword endpoint, which is responsible for resetting a user's password
+      given an OOB code and new password.
+    @param request The request parameters.
+    @param callback The callback.
+ */
+- (void)resetPassword:(FIRResetPasswordRequest *)request
+             callback:(FIRResetPasswordCallback)callback;
+
+/** @fn postWithRequest:response:callback:
+    @brief Calls the RPC using HTTP POST.
+    @remarks Possible error responses:
+        @see FIRAuthInternalErrorCodeRPCRequestEncodingError
+        @see FIRAuthInternalErrorCodeJSONSerializationError
+        @see FIRAuthInternalErrorCodeNetworkError
+        @see FIRAuthInternalErrorCodeUnexpectedErrorResponse
+        @see FIRAuthInternalErrorCodeUnexpectedResponse
+        @see FIRAuthInternalErrorCodeRPCResponseDecodingError
+    @param request The request.
+    @param response The empty response to be filled.
+    @param callback The callback for both success and failure.
+*/
+- (void)postWithRequest:(id<FIRAuthRPCRequest>)request
+               response:(id<FIRAuthRPCResponse>)response
+               callback:(void (^)(NSError *_Nullable error))callback;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.m
new file mode 100644
index 0000000..dbfc77f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthBackend.m	
@@ -0,0 +1,1433 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+
+#if SWIFT_PACKAGE
+@import GTMSessionFetcherCore;
+#else
+#import <GTMSessionFetcher/GTMSessionFetcher.h>
+#import <GTMSessionFetcher/GTMSessionFetcherService.h>
+#endif
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FirebaseAuth.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo+Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kClientVersionHeader
+    @brief HTTP header name for the client version.
+ */
+static NSString *const kClientVersionHeader = @"X-Client-Version";
+
+/** @var kIosBundleIdentifierHeader
+    @brief HTTP header name for iOS bundle ID.
+ */
+static NSString *const kIosBundleIdentifierHeader = @"X-Ios-Bundle-Identifier";
+
+/** @var kFirebaseLocalHeader
+    @brief HTTP header name for the firebase locale.
+ */
+static NSString *const kFirebaseLocalHeader = @"X-Firebase-Locale";
+
+/** @var kFirebaseAuthCoreFrameworkMarker
+    @brief The marker in the HTTP header that indicates the request comes from Firebase Auth Core.
+ */
+static NSString *const kFirebaseAuthCoreFrameworkMarker = @"FirebaseCore-iOS";
+
+/** @var kJSONContentType
+    @brief The value of the HTTP content-type header for JSON payloads.
+ */
+static NSString *const kJSONContentType = @"application/json";
+
+/** @var kErrorDataKey
+    @brief Key for error data in NSError returned by @c GTMSessionFetcher.
+ */
+static NSString *const kErrorDataKey = @"data";
+
+/** @var kErrorKey
+    @brief The key for the "error" value in JSON responses from the server.
+ */
+static NSString *const kErrorKey = @"error";
+
+/** @var kErrorsKey
+    @brief The key for the "errors" value in JSON responses from the server.
+ */
+static NSString *const kErrorsKey = @"errors";
+
+/** @var kReasonKey
+    @brief The key for the "reason" value in JSON responses from the server.
+ */
+static NSString *const kReasonKey = @"reason";
+
+/** @var kInvalidKeyReasonValue
+    @brief The value for the "reason" key indicating an invalid API Key was received by the server.
+ */
+static NSString *const kInvalidKeyReasonValue = @"keyInvalid";
+
+/** @var kAppNotAuthorizedReasonValue
+    @brief The value for the "reason" key indicating the App is not authorized to use Firebase
+        Authentication.
+ */
+static NSString *const kAppNotAuthorizedReasonValue = @"ipRefererBlocked";
+
+/** @var kErrorMessageKey
+    @brief The key for an error's "message" value in JSON responses from the server.
+ */
+static NSString *const kErrorMessageKey = @"message";
+
+/** @var kReturnIDPCredentialErrorMessageKey
+    @brief The key for "errorMessage" value in JSON responses from the server, In case
+        returnIDPCredential of a verifyAssertion request is set to @YES.
+ */
+static NSString *const kReturnIDPCredentialErrorMessageKey = @"errorMessage";
+
+/** @var kUserNotFoundErrorMessage
+    @brief This is the error message returned when the user is not found, which means the user
+        account has been deleted given the token was once valid.
+ */
+static NSString *const kUserNotFoundErrorMessage = @"USER_NOT_FOUND";
+
+/** @var kUserDeletedErrorMessage
+    @brief This is the error message the server will respond with if the user entered an invalid
+        email address.
+ */
+static NSString *const kUserDeletedErrorMessage = @"EMAIL_NOT_FOUND";
+
+/** @var kInvalidLocalIDErrorMessage
+    @brief This is the error message the server responds with if the user local id in the id token
+        does not exit.
+ */
+static NSString *const kInvalidLocalIDErrorMessage = @"INVALID_LOCAL_ID";
+
+/** @var kUserTokenExpiredErrorMessage
+    @brief The error returned by the server if the token issue time is older than the account's
+        valid_since time.
+ */
+static NSString *const kUserTokenExpiredErrorMessage = @"TOKEN_EXPIRED";
+
+/** @var kTooManyRequestsErrorMessage
+    @brief This is the error message the server will respond with if too many requests were made to
+        a server method.
+ */
+static NSString *const kTooManyRequestsErrorMessage = @"TOO_MANY_ATTEMPTS_TRY_LATER";
+
+/** @var kInvalidCustomTokenErrorMessage
+    @brief This is the error message the server will respond with if there is a validation error
+        with the custom token.
+ */
+static NSString *const kInvalidCustomTokenErrorMessage = @"INVALID_CUSTOM_TOKEN";
+
+/** @var kCustomTokenMismatch
+    @brief This is the error message the server will respond with if the service account and API key
+        belong to different projects.
+ */
+static NSString *const kCustomTokenMismatch = @"CREDENTIAL_MISMATCH";
+
+/** @var kInvalidCredentialErrorMessage
+    @brief This is the error message the server responds with if the IDP token or requestUri is
+        invalid.
+ */
+static NSString *const kInvalidCredentialErrorMessage = @"INVALID_IDP_RESPONSE";
+
+/** @var kUserDisabledErrorMessage
+    @brief The error returned by the server if the user account is diabled.
+ */
+static NSString *const kUserDisabledErrorMessage = @"USER_DISABLED";
+
+/** @var kOperationNotAllowedErrorMessage
+    @brief This is the error message the server will respond with if Admin disables IDP specified by
+        provider.
+ */
+static NSString *const kOperationNotAllowedErrorMessage = @"OPERATION_NOT_ALLOWED";
+
+/** @var kPasswordLoginDisabledErrorMessage
+    @brief This is the error message the server responds with if password login is disabled.
+ */
+static NSString *const kPasswordLoginDisabledErrorMessage = @"PASSWORD_LOGIN_DISABLED";
+
+/** @var kEmailAlreadyInUseErrorMessage
+    @brief This is the error message the server responds with if the email address already exists.
+ */
+static NSString *const kEmailAlreadyInUseErrorMessage = @"EMAIL_EXISTS";
+
+/** @var kInvalidEmailErrorMessage
+    @brief The error returned by the server if the email is invalid.
+ */
+static NSString *const kInvalidEmailErrorMessage = @"INVALID_EMAIL";
+
+/** @var kInvalidIdentifierErrorMessage
+    @brief The error returned by the server if the identifier is invalid.
+ */
+static NSString *const kInvalidIdentifierErrorMessage = @"INVALID_IDENTIFIER";
+
+/** @var kWrongPasswordErrorMessage
+    @brief This is the error message the server will respond with if the user entered a wrong
+        password.
+ */
+static NSString *const kWrongPasswordErrorMessage = @"INVALID_PASSWORD";
+
+/** @var kCredentialTooOldErrorMessage
+    @brief This is the error message the server responds with if account change is attempted 5
+        minutes after signing in.
+ */
+static NSString *const kCredentialTooOldErrorMessage = @"CREDENTIAL_TOO_OLD_LOGIN_AGAIN";
+
+/** @var kFederatedUserIDAlreadyLinkedMessage
+    @brief This is the error message the server will respond with if the federated user ID has been
+        already linked with another account.
+ */
+static NSString *const kFederatedUserIDAlreadyLinkedMessage = @"FEDERATED_USER_ID_ALREADY_LINKED";
+
+/** @var kInvalidUserTokenErrorMessage
+    @brief This is the error message the server responds with if user's saved auth credential is
+        invalid, and the user needs to sign in again.
+ */
+static NSString *const kInvalidUserTokenErrorMessage = @"INVALID_ID_TOKEN";
+
+/** @var kWeakPasswordErrorMessagePrefix
+    @brief This is the prefix for the error message the server responds with if user's new password
+        to be set is too weak.
+ */
+static NSString *const kWeakPasswordErrorMessagePrefix = @"WEAK_PASSWORD";
+
+/** @var kExpiredActionCodeErrorMessage
+    @brief This is the error message the server will respond with if the action code is expired.
+ */
+static NSString *const kExpiredActionCodeErrorMessage = @"EXPIRED_OOB_CODE";
+
+/** @var kInvalidActionCodeErrorMessage
+    @brief This is the error message the server will respond with if the action code is invalid.
+ */
+static NSString *const kInvalidActionCodeErrorMessage = @"INVALID_OOB_CODE";
+
+/** @var kMissingEmailErrorMessage
+    @brief This is the error message the server will respond with if the email address is missing
+        during a "send password reset email" attempt.
+ */
+static NSString *const kMissingEmailErrorMessage = @"MISSING_EMAIL";
+
+/** @var kInvalidSenderEmailErrorMessage
+    @brief This is the error message the server will respond with if the sender email is invalid
+        during a "send password reset email" attempt.
+ */
+static NSString *const kInvalidSenderEmailErrorMessage = @"INVALID_SENDER";
+
+/** @var kInvalidMessagePayloadErrorMessage
+    @brief This is the error message the server will respond with if there are invalid parameters in
+        the payload during a "send password reset email" attempt.
+ */
+static NSString *const kInvalidMessagePayloadErrorMessage = @"INVALID_MESSAGE_PAYLOAD";
+
+/** @var kInvalidRecipientEmailErrorMessage
+    @brief This is the error message the server will respond with if the recipient email is invalid.
+ */
+static NSString *const kInvalidRecipientEmailErrorMessage = @"INVALID_RECIPIENT_EMAIL";
+
+/** @var kMissingIosBundleIDErrorMessage
+    @brief This is the error message the server will respond with if iOS bundle ID is missing but
+        the iOS App store ID is provided.
+ */
+static NSString *const kMissingIosBundleIDErrorMessage = @"MISSING_IOS_BUNDLE_ID";
+
+/** @var kMissingAndroidPackageNameErrorMessage
+    @brief This is the error message the server will respond with if Android Package Name is missing
+        but the flag indicating the app should be installed is set to true.
+ */
+static NSString *const kMissingAndroidPackageNameErrorMessage = @"MISSING_ANDROID_PACKAGE_NAME";
+
+/** @var kUnauthorizedDomainErrorMessage
+    @brief This is the error message the server will respond with if the domain of the continue URL
+        specified is not allowlisted in the Firebase console.
+ */
+static NSString *const kUnauthorizedDomainErrorMessage = @"UNAUTHORIZED_DOMAIN";
+
+/** @var kInvalidProviderIDErrorMessage
+    @brief This is the error message the server will respond with if the provider id given for the
+        web operation is invalid.
+ */
+static NSString *const kInvalidProviderIDErrorMessage = @"INVALID_PROVIDER_ID";
+
+/** @var kInvalidDynamicLinkDomainErrorMessage
+    @brief This is the error message the server will respond with if the dynamic link domain
+        provided in the request is invalid.
+ */
+static NSString *const kInvalidDynamicLinkDomainErrorMessage = @"INVALID_DYNAMIC_LINK_DOMAIN";
+
+/** @var kInvalidContinueURIErrorMessage
+    @brief This is the error message the server will respond with if the continue URL provided in
+        the request is invalid.
+ */
+static NSString *const kInvalidContinueURIErrorMessage = @"INVALID_CONTINUE_URI";
+
+/** @var kMissingContinueURIErrorMessage
+    @brief This is the error message the server will respond with if there was no continue URI
+        present in a request that required one.
+ */
+static NSString *const kMissingContinueURIErrorMessage = @"MISSING_CONTINUE_URI";
+
+/** @var kInvalidPhoneNumberErrorMessage
+    @brief This is the error message the server will respond with if an incorrectly formatted phone
+        number is provided.
+ */
+static NSString *const kInvalidPhoneNumberErrorMessage = @"INVALID_PHONE_NUMBER";
+
+/** @var kInvalidVerificationCodeErrorMessage
+    @brief This is the error message the server will respond with if an invalid verification code is
+        provided.
+ */
+static NSString *const kInvalidVerificationCodeErrorMessage = @"INVALID_CODE";
+
+/** @var kInvalidSessionInfoErrorMessage
+    @brief This is the error message the server will respond with if an invalid session info
+        (verification ID) is provided.
+ */
+static NSString *const kInvalidSessionInfoErrorMessage = @"INVALID_SESSION_INFO";
+
+/** @var kSessionExpiredErrorMessage
+    @brief This is the error message the server will respond with if the SMS code has expired before
+        it is used.
+ */
+static NSString *const kSessionExpiredErrorMessage = @"SESSION_EXPIRED";
+
+/** @var kMissingOrInvalidNonceErrorMessage
+    @brief This is the error message the server will respond with if the nonce is missing or
+   invalid.
+ */
+static NSString *const kMissingOrInvalidNonceErrorMessage = @"MISSING_OR_INVALID_NONCE";
+
+/** @var kMissingAppTokenErrorMessage
+    @brief This is the error message the server will respond with if the APNS token is missing in a
+        verifyClient request.
+ */
+static NSString *const kMissingAppTokenErrorMessage = @"MISSING_IOS_APP_TOKEN";
+
+/** @var kMissingAppCredentialErrorMessage
+    @brief This is the error message the server will respond with if the app token is missing in a
+        sendVerificationCode request.
+ */
+static NSString *const kMissingAppCredentialErrorMessage = @"MISSING_APP_CREDENTIAL";
+
+/** @var kInvalidAppCredentialErrorMessage
+    @brief This is the error message the server will respond with if the app credential in a
+        sendVerificationCode request is invalid.
+ */
+static NSString *const kInvalidAppCredentialErrorMessage = @"INVALID_APP_CREDENTIAL";
+
+/** @var kQuoutaExceededErrorMessage
+    @brief This is the error message the server will respond with if the quota for SMS text messages
+        has been exceeded for the project.
+ */
+static NSString *const kQuoutaExceededErrorMessage = @"QUOTA_EXCEEDED";
+
+/** @var kAppNotVerifiedErrorMessage
+    @brief This is the error message the server will respond with if Firebase could not verify the
+        app during a phone authentication flow.
+ */
+static NSString *const kAppNotVerifiedErrorMessage = @"APP_NOT_VERIFIED";
+
+/** @var kMissingClientIdentifier
+    @brief This is the error message the server will respond with if Firebase could not verify the
+        app during a phone authentication flow when a real phone number is used and app verification
+        is disabled for testing.
+ */
+static NSString *const kMissingClientIdentifier = @"MISSING_CLIENT_IDENTIFIER";
+
+/** @var kCaptchaCheckFailedErrorMessage
+    @brief This is the error message the server will respond with if the reCAPTCHA token provided is
+        invalid.
+ */
+static NSString *const kCaptchaCheckFailedErrorMessage = @"CAPTCHA_CHECK_FAILED";
+
+/** @var kTenantIDMismatch
+    @brief This is the error message the server will respond with if the tenant id mismatches.
+ */
+static NSString *const kTenantIDMismatch = @"TENANT_ID_MISMATCH";
+
+/** @var kUnsupportedTenantOperation
+    @brief This is the error message the server will respond with if the operation does not support
+   multi-tenant.
+ */
+static NSString *const kUnsupportedTenantOperation = @"UNSUPPORTED_TENANT_OPERATION";
+
+/** @var kMissingMFAPendingCredentialErrorMessage
+ @brief This is the error message the server will respond with if the MFA pending credential is
+ missing.
+ */
+static NSString *const kMissingMFAPendingCredentialErrorMessage = @"MISSING_MFA_PENDING_CREDENTIAL";
+
+/** @var kMissingMFAEnrollmentIDErrorMessage
+ @brief This is the error message the server will respond with if the MFA enrollment ID is missing.
+ */
+static NSString *const kMissingMFAEnrollmentIDErrorMessage = @"MISSING_MFA_ENROLLMENT_ID";
+
+/** @var kInvalidMFAPendingCredentialErrorMessage
+ @brief This is the error message the server will respond with if the MFA pending credential is
+ invalid.
+ */
+static NSString *const kInvalidMFAPendingCredentialErrorMessage = @"INVALID_MFA_PENDING_CREDENTIAL";
+
+/** @var kMFAEnrollmentNotFoundErrorMessage
+ @brief This is the error message the server will respond with if the MFA enrollment info is not
+ found.
+ */
+static NSString *const kMFAEnrollmentNotFoundErrorMessage = @"MFA_ENROLLMENT_NOT_FOUND";
+
+/** @var kAdminOnlyOperationErrorMessage
+ @brief This is the error message the server will respond with if the operation is admin only.
+ */
+static NSString *const kAdminOnlyOperationErrorMessage = @"ADMIN_ONLY_OPERATION";
+
+/** @var kUnverifiedEmailErrorMessage
+ @brief This is the error message the server will respond with if the email is unverified.
+ */
+static NSString *const kUnverifiedEmailErrorMessage = @"UNVERIFIED_EMAIL";
+
+/** @var kSecondFactorExistsErrorMessage
+ @brief This is the error message the server will respond with if the second factor already exsists.
+ */
+static NSString *const kSecondFactorExistsErrorMessage = @"SECOND_FACTOR_EXISTS";
+
+/** @var kSecondFactorLimitExceededErrorMessage
+ @brief This is the error message the server will respond with if the number of second factor
+ reaches the limit.
+ */
+static NSString *const kSecondFactorLimitExceededErrorMessage = @"SECOND_FACTOR_LIMIT_EXCEEDED";
+
+/** @var kUnsupportedFirstFactorErrorMessage
+ @brief This is the error message the server will respond with if the first factor doesn't support
+ MFA.
+ */
+static NSString *const kUnsupportedFirstFactorErrorMessage = @"UNSUPPORTED_FIRST_FACTOR";
+
+/** @var kEmailChangeNeedsVerificationErrorMessage
+ @brief This is the error message the server will respond with if changing an unverified email.
+ */
+static NSString *const kEmailChangeNeedsVerificationErrorMessage =
+    @"EMAIL_CHANGE_NEEDS_VERIFICATION";
+
+/** @var kInvalidPendingToken
+    @brief Generic IDP error codes.
+ */
+static NSString *const kInvalidPendingToken = @"INVALID_PENDING_TOKEN";
+
+/** @var gBackendImplementation
+    @brief The singleton FIRAuthBackendImplementation instance to use.
+ */
+static id<FIRAuthBackendImplementation> gBackendImplementation;
+
+/** @class FIRAuthBackendRPCImplementation
+    @brief The default RPC-based backend implementation.
+ */
+@interface FIRAuthBackendRPCImplementation : NSObject <FIRAuthBackendImplementation>
+
+/** @property RPCIssuer
+    @brief An instance of FIRAuthBackendRPCIssuer for making RPC requests. Allows the RPC
+        requests/responses to be easily faked.
+ */
+@property(nonatomic, strong) id<FIRAuthBackendRPCIssuer> RPCIssuer;
+
+@end
+
+@implementation FIRAuthBackend
+
++ (id<FIRAuthBackendImplementation>)implementation {
+  if (!gBackendImplementation) {
+    gBackendImplementation = [[FIRAuthBackendRPCImplementation alloc] init];
+  }
+  return gBackendImplementation;
+}
+
++ (void)setBackendImplementation:(id<FIRAuthBackendImplementation>)backendImplementation {
+  gBackendImplementation = backendImplementation;
+}
+
++ (void)setDefaultBackendImplementationWithRPCIssuer:
+    (nullable id<FIRAuthBackendRPCIssuer>)RPCIssuer {
+  FIRAuthBackendRPCImplementation *defaultImplementation =
+      [[FIRAuthBackendRPCImplementation alloc] init];
+  if (RPCIssuer) {
+    defaultImplementation.RPCIssuer = RPCIssuer;
+  }
+  gBackendImplementation = defaultImplementation;
+}
+
++ (void)createAuthURI:(FIRCreateAuthURIRequest *)request
+             callback:(FIRCreateAuthURIResponseCallback)callback {
+  [[self implementation] createAuthURI:request callback:callback];
+}
+
++ (void)getAccountInfo:(FIRGetAccountInfoRequest *)request
+              callback:(FIRGetAccountInfoResponseCallback)callback {
+  [[self implementation] getAccountInfo:request callback:callback];
+}
+
++ (void)getProjectConfig:(FIRGetProjectConfigRequest *)request
+                callback:(FIRGetProjectConfigResponseCallback)callback {
+  [[self implementation] getProjectConfig:request callback:callback];
+}
+
++ (void)setAccountInfo:(FIRSetAccountInfoRequest *)request
+              callback:(FIRSetAccountInfoResponseCallback)callback {
+  [[self implementation] setAccountInfo:request callback:callback];
+}
+
++ (void)verifyAssertion:(FIRVerifyAssertionRequest *)request
+               callback:(FIRVerifyAssertionResponseCallback)callback {
+  [[self implementation] verifyAssertion:request callback:callback];
+}
+
++ (void)verifyCustomToken:(FIRVerifyCustomTokenRequest *)request
+                 callback:(FIRVerifyCustomTokenResponseCallback)callback {
+  [[self implementation] verifyCustomToken:request callback:callback];
+}
+
++ (void)verifyPassword:(FIRVerifyPasswordRequest *)request
+              callback:(FIRVerifyPasswordResponseCallback)callback {
+  [[self implementation] verifyPassword:request callback:callback];
+}
+
++ (void)emailLinkSignin:(FIREmailLinkSignInRequest *)request
+               callback:(FIREmailLinkSigninResponseCallback)callback {
+  [[self implementation] emailLinkSignin:request callback:callback];
+}
+
++ (void)secureToken:(FIRSecureTokenRequest *)request
+           callback:(FIRSecureTokenResponseCallback)callback {
+  [[self implementation] secureToken:request callback:callback];
+}
+
++ (void)getOOBConfirmationCode:(FIRGetOOBConfirmationCodeRequest *)request
+                      callback:(FIRGetOOBConfirmationCodeResponseCallback)callback {
+  [[self implementation] getOOBConfirmationCode:request callback:callback];
+}
+
++ (void)signUpNewUser:(FIRSignUpNewUserRequest *)request
+             callback:(FIRSignupNewUserCallback)callback {
+  [[self implementation] signUpNewUser:request callback:callback];
+}
+
++ (void)deleteAccount:(FIRDeleteAccountRequest *)request callback:(FIRDeleteCallBack)callback {
+  [[self implementation] deleteAccount:request callback:callback];
+}
+
++ (void)signInWithGameCenter:(FIRSignInWithGameCenterRequest *)request
+                    callback:(FIRSignInWithGameCenterResponseCallback)callback {
+  [[self implementation] signInWithGameCenter:request callback:callback];
+}
+
+#if TARGET_OS_IOS
++ (void)sendVerificationCode:(FIRSendVerificationCodeRequest *)request
+                    callback:(FIRSendVerificationCodeResponseCallback)callback {
+  [[self implementation] sendVerificationCode:request callback:callback];
+}
+
++ (void)verifyPhoneNumber:(FIRVerifyPhoneNumberRequest *)request
+                 callback:(FIRVerifyPhoneNumberResponseCallback)callback {
+  [[self implementation] verifyPhoneNumber:request callback:callback];
+}
+
++ (void)verifyClient:(id)request callback:(FIRVerifyClientResponseCallback)callback {
+  [[self implementation] verifyClient:request callback:callback];
+}
+#endif
+
++ (void)resetPassword:(FIRResetPasswordRequest *)request
+             callback:(FIRResetPasswordCallback)callback {
+  [[self implementation] resetPassword:request callback:callback];
+}
+
++ (NSString *)authUserAgent {
+  return [NSString stringWithFormat:@"FirebaseAuth.iOS/%@ %@", FIRFirebaseVersion(),
+                                    GTMFetcherStandardUserAgentString(nil)];
+}
+
+@end
+
+@interface FIRAuthBackendRPCIssuerImplementation : NSObject <FIRAuthBackendRPCIssuer>
+@end
+
+@implementation FIRAuthBackendRPCIssuerImplementation {
+  /** @var The session fetcher service.
+   */
+  GTMSessionFetcherService *_fetcherService;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _fetcherService = [[GTMSessionFetcherService alloc] init];
+    _fetcherService.userAgent = [FIRAuthBackend authUserAgent];
+    _fetcherService.callbackQueue = FIRAuthGlobalWorkQueue();
+
+    // Avoid reusing the session to prevent
+    // https://github.com/firebase/firebase-ios-sdk/issues/1261
+    _fetcherService.reuseSession = NO;
+  }
+  return self;
+}
+
+- (void)asyncPostToURLWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                           URL:(NSURL *)URL
+                                          body:(nullable NSData *)body
+                                   contentType:(NSString *)contentType
+                             completionHandler:
+                                 (void (^)(NSData *_Nullable, NSError *_Nullable))handler {
+  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
+  [request setValue:contentType forHTTPHeaderField:@"Content-Type"];
+  NSString *additionalFrameworkMarker =
+      requestConfiguration.additionalFrameworkMarker ?: kFirebaseAuthCoreFrameworkMarker;
+  NSString *clientVersion = [NSString
+      stringWithFormat:@"iOS/FirebaseSDK/%@/%@", FIRFirebaseVersion(), additionalFrameworkMarker];
+  [request setValue:clientVersion forHTTPHeaderField:kClientVersionHeader];
+  NSString *bundleID = [[NSBundle mainBundle] bundleIdentifier];
+  [request setValue:bundleID forHTTPHeaderField:kIosBundleIdentifierHeader];
+
+  NSArray<NSString *> *preferredLocalizations = [NSBundle mainBundle].preferredLocalizations;
+  if (preferredLocalizations.count) {
+    NSString *acceptLanguage = preferredLocalizations.firstObject;
+    [request setValue:acceptLanguage forHTTPHeaderField:@"Accept-Language"];
+  }
+  NSString *languageCode = requestConfiguration.languageCode;
+  if (languageCode.length) {
+    [request setValue:languageCode forHTTPHeaderField:kFirebaseLocalHeader];
+  }
+  GTMSessionFetcher *fetcher = [_fetcherService fetcherWithRequest:request];
+  NSString *emulatorHostAndPort = requestConfiguration.emulatorHostAndPort;
+  if (emulatorHostAndPort) {
+    fetcher.allowLocalhostRequest = YES;
+    fetcher.allowedInsecureSchemes = @[ @"http" ];
+  }
+  fetcher.bodyData = body;
+  [fetcher beginFetchWithCompletionHandler:handler];
+}
+
+@end
+
+@implementation FIRAuthBackendRPCImplementation
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _RPCIssuer = [[FIRAuthBackendRPCIssuerImplementation alloc] init];
+  }
+  return self;
+}
+
+- (void)createAuthURI:(FIRCreateAuthURIRequest *)request
+             callback:(FIRCreateAuthURIResponseCallback)callback {
+  FIRCreateAuthURIResponse *response = [[FIRCreateAuthURIResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)getAccountInfo:(FIRGetAccountInfoRequest *)request
+              callback:(FIRGetAccountInfoResponseCallback)callback {
+  FIRGetAccountInfoResponse *response = [[FIRGetAccountInfoResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)getProjectConfig:(FIRGetProjectConfigRequest *)request
+                callback:(FIRGetProjectConfigResponseCallback)callback {
+  FIRGetProjectConfigResponse *response = [[FIRGetProjectConfigResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)setAccountInfo:(FIRSetAccountInfoRequest *)request
+              callback:(FIRSetAccountInfoResponseCallback)callback {
+  FIRSetAccountInfoResponse *response = [[FIRSetAccountInfoResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)verifyAssertion:(FIRVerifyAssertionRequest *)request
+               callback:(FIRVerifyAssertionResponseCallback)callback {
+  FIRVerifyAssertionResponse *response = [[FIRVerifyAssertionResponse alloc] init];
+  [self
+      postWithRequest:request
+             response:response
+             callback:^(NSError *error) {
+               if (error) {
+                 callback(nil, error);
+               } else {
+                 if (!response.IDToken && response.MFAInfo) {
+#if TARGET_OS_IOS
+                   NSMutableArray<FIRMultiFactorInfo *> *multiFactorInfo = [NSMutableArray array];
+                   for (FIRAuthProtoMFAEnrollment *MFAEnrollment in response.MFAInfo) {
+                     FIRPhoneMultiFactorInfo *info =
+                         [[FIRPhoneMultiFactorInfo alloc] initWithProto:MFAEnrollment];
+                     [multiFactorInfo addObject:info];
+                   }
+                   NSError *multiFactorRequiredError = [FIRAuthErrorUtils
+                       secondFactorRequiredErrorWithPendingCredential:response.MFAPendingCredential
+                                                                hints:multiFactorInfo];
+                   callback(nil, multiFactorRequiredError);
+#endif
+                 } else {
+                   callback(response, nil);
+                 }
+               }
+             }];
+}
+
+- (void)verifyCustomToken:(FIRVerifyCustomTokenRequest *)request
+                 callback:(FIRVerifyCustomTokenResponseCallback)callback {
+  FIRVerifyCustomTokenResponse *response = [[FIRVerifyCustomTokenResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)verifyPassword:(FIRVerifyPasswordRequest *)request
+              callback:(FIRVerifyPasswordResponseCallback)callback {
+  FIRVerifyPasswordResponse *response = [[FIRVerifyPasswordResponse alloc] init];
+  [self
+      postWithRequest:request
+             response:response
+             callback:^(NSError *error) {
+               if (error) {
+                 callback(nil, error);
+               } else {
+                 if (!response.IDToken && response.MFAInfo) {
+#if TARGET_OS_IOS
+                   NSMutableArray<FIRMultiFactorInfo *> *multiFactorInfo = [NSMutableArray array];
+                   for (FIRAuthProtoMFAEnrollment *MFAEnrollment in response.MFAInfo) {
+                     FIRPhoneMultiFactorInfo *info =
+                         [[FIRPhoneMultiFactorInfo alloc] initWithProto:MFAEnrollment];
+                     [multiFactorInfo addObject:info];
+                   }
+                   NSError *multiFactorRequiredError = [FIRAuthErrorUtils
+                       secondFactorRequiredErrorWithPendingCredential:response.MFAPendingCredential
+                                                                hints:multiFactorInfo];
+                   callback(nil, multiFactorRequiredError);
+#endif
+                 } else {
+                   callback(response, nil);
+                 }
+               }
+             }];
+}
+
+- (void)emailLinkSignin:(FIREmailLinkSignInRequest *)request
+               callback:(FIREmailLinkSigninResponseCallback)callback {
+  FIREmailLinkSignInResponse *response = [[FIREmailLinkSignInResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)secureToken:(FIRSecureTokenRequest *)request
+           callback:(FIRSecureTokenResponseCallback)callback {
+  FIRSecureTokenResponse *response = [[FIRSecureTokenResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)getOOBConfirmationCode:(FIRGetOOBConfirmationCodeRequest *)request
+                      callback:(FIRGetOOBConfirmationCodeResponseCallback)callback {
+  FIRGetOOBConfirmationCodeResponse *response = [[FIRGetOOBConfirmationCodeResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)signUpNewUser:(FIRSignUpNewUserRequest *)request
+             callback:(FIRSignupNewUserCallback)callback {
+  FIRSignUpNewUserResponse *response = [[FIRSignUpNewUserResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, nil);
+                 }
+               }];
+}
+
+- (void)deleteAccount:(FIRDeleteAccountRequest *)request callback:(FIRDeleteCallBack)callback {
+  FIRDeleteAccountResponse *response = [[FIRDeleteAccountResponse alloc] init];
+  [self postWithRequest:request response:response callback:callback];
+}
+
+#if TARGET_OS_IOS
+- (void)sendVerificationCode:(FIRSendVerificationCodeRequest *)request
+                    callback:(FIRSendVerificationCodeResponseCallback)callback {
+  FIRSendVerificationCodeResponse *response = [[FIRSendVerificationCodeResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                 } else {
+                   callback(response, error);
+                 }
+               }];
+}
+
+- (void)verifyPhoneNumber:(FIRVerifyPhoneNumberRequest *)request
+                 callback:(FIRVerifyPhoneNumberResponseCallback)callback {
+  FIRVerifyPhoneNumberResponse *response = [[FIRVerifyPhoneNumberResponse alloc] init];
+  [self
+      postWithRequest:request
+             response:response
+             callback:^(NSError *error) {
+               if (error) {
+                 callback(nil, error);
+                 return;
+               }
+               // Check whether or not the successful response is actually the special case phone
+               // auth flow that returns a temporary proof and phone number.
+               if (response.phoneNumber.length && response.temporaryProof.length) {
+                 FIRPhoneAuthCredential *credential =
+                     [[FIRPhoneAuthCredential alloc] initWithTemporaryProof:response.temporaryProof
+                                                                phoneNumber:response.phoneNumber
+                                                                 providerID:FIRPhoneAuthProviderID];
+                 callback(nil, [FIRAuthErrorUtils credentialAlreadyInUseErrorWithMessage:nil
+                                                                              credential:credential
+                                                                                   email:nil]);
+                 return;
+               }
+               callback(response, nil);
+             }];
+}
+
+- (void)verifyClient:(id)request callback:(FIRVerifyClientResponseCallback)callback {
+  FIRVerifyClientResponse *response = [[FIRVerifyClientResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                   return;
+                 }
+                 callback(response, nil);
+               }];
+}
+#endif
+
+- (void)resetPassword:(FIRResetPasswordRequest *)request
+             callback:(FIRResetPasswordCallback)callback {
+  FIRResetPasswordResponse *response = [[FIRResetPasswordResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   callback(nil, error);
+                   return;
+                 }
+                 callback(response, nil);
+               }];
+}
+
+- (void)signInWithGameCenter:(FIRSignInWithGameCenterRequest *)request
+                    callback:(FIRSignInWithGameCenterResponseCallback)callback {
+  FIRSignInWithGameCenterResponse *response = [[FIRSignInWithGameCenterResponse alloc] init];
+  [self postWithRequest:request
+               response:response
+               callback:^(NSError *error) {
+                 if (error) {
+                   if (callback) {
+                     callback(nil, error);
+                   }
+                 } else {
+                   if (callback) {
+                     callback(response, nil);
+                   }
+                 }
+               }];
+}
+
+#pragma mark - Generic RPC handling methods
+
+/** @fn postWithRequest:response:callback:
+    @brief Calls the RPC using HTTP POST.
+    @remarks Possible error responses:
+        @see FIRAuthInternalErrorCodeRPCRequestEncodingError
+        @see FIRAuthInternalErrorCodeJSONSerializationError
+        @see FIRAuthInternalErrorCodeNetworkError
+        @see FIRAuthInternalErrorCodeUnexpectedErrorResponse
+        @see FIRAuthInternalErrorCodeUnexpectedResponse
+        @see FIRAuthInternalErrorCodeRPCResponseDecodingError
+    @param request The request.
+    @param response The empty response to be filled.
+    @param callback The callback for both success and failure.
+ */
+- (void)postWithRequest:(id<FIRAuthRPCRequest>)request
+               response:(id<FIRAuthRPCResponse>)response
+               callback:(void (^)(NSError *_Nullable error))callback {
+  NSError *error;
+  NSData *bodyData;
+  if ([request containsPostBody]) {
+    id postBody = [request unencodedHTTPRequestBodyWithError:&error];
+    if (!postBody) {
+      callback([FIRAuthErrorUtils RPCRequestEncodingErrorWithUnderlyingError:error]);
+      return;
+    }
+
+    NSJSONWritingOptions JSONWritingOptions = 0;
+#if DEBUG
+    JSONWritingOptions |= NSJSONWritingPrettyPrinted;
+#endif
+
+    if ([NSJSONSerialization isValidJSONObject:postBody]) {
+      bodyData = [NSJSONSerialization dataWithJSONObject:postBody
+                                                 options:JSONWritingOptions
+                                                   error:&error];
+      if (!bodyData) {
+        // This is an untested case. This happens exclusively when there is an error in the
+        // framework implementation of dataWithJSONObject:options:error:. This shouldn't normally
+        // occur as isValidJSONObject: should return NO in any case we should encounter an error.
+        error = [FIRAuthErrorUtils JSONSerializationErrorWithUnderlyingError:error];
+      }
+    } else {
+      error = [FIRAuthErrorUtils JSONSerializationErrorForUnencodableType];
+    }
+    if (!bodyData) {
+      callback(error);
+      return;
+    }
+  }
+
+  [_RPCIssuer
+    asyncPostToURLWithRequestConfiguration:[request requestConfiguration]
+                                       URL:[request requestURL]
+                                      body:bodyData
+                               contentType:kJSONContentType
+                         completionHandler:^(NSData *data, NSError *error) {
+                           // If there is an error with no body data at all, then this must be a
+                           // network error.
+                           if (error && !data) {
+                             callback([FIRAuthErrorUtils networkErrorWithUnderlyingError:error]);
+                             return;
+                           }
+
+                           // Try to decode the HTTP response data which may contain either a
+                           // successful response or error message.
+                           NSError *jsonError;
+                           NSDictionary *dictionary =
+                               [NSJSONSerialization JSONObjectWithData:data
+                                                               options:NSJSONReadingMutableLeaves
+                                                                 error:&jsonError];
+                           if (!dictionary) {
+                             if (error) {
+                               // We have an error, but we couldn't decode the body, so we have no
+                               // additional information other than the raw response and the
+                               // original NSError (the jsonError is infered by the error code
+                               // (FIRAuthErrorCodeUnexpectedHTTPResponse, and is irrelevant.)
+                               callback([FIRAuthErrorUtils unexpectedErrorResponseWithData:data
+                                                                           underlyingError:error]);
+                             } else {
+                               // This is supposed to be a "successful" response, but we couldn't
+                               // deserialize the body.
+                               callback([FIRAuthErrorUtils unexpectedResponseWithData:data
+                                                                      underlyingError:jsonError]);
+                             }
+                             return;
+                           }
+                           if (![dictionary isKindOfClass:[NSDictionary class]]) {
+                             if (error) {
+                               callback([FIRAuthErrorUtils
+                                   unexpectedErrorResponseWithDeserializedResponse:dictionary]);
+                             } else {
+                               callback([FIRAuthErrorUtils
+                                   unexpectedResponseWithDeserializedResponse:dictionary]);
+                             }
+                             return;
+                           }
+
+                           // At this point we either have an error with successfully decoded
+                           // details in the body, or we have a response which must pass further
+                           // validation before we know it's truly successful. We deal with the
+                           // case where we have an error with successfully decoded error details
+                           // first:
+                           if (error) {
+                             NSDictionary *errorDictionary = dictionary[kErrorKey];
+                             if ([errorDictionary isKindOfClass:[NSDictionary class]]) {
+                               id<NSObject> errorMessage = errorDictionary[kErrorMessageKey];
+                               if ([errorMessage isKindOfClass:[NSString class]]) {
+                                 NSString *errorMessageString = (NSString *)errorMessage;
+
+                                 // Contruct client error.
+                                 NSError *clientError = [[self class]
+                                     clientErrorWithServerErrorMessage:errorMessageString
+                                                       errorDictionary:errorDictionary
+                                                              response:response];
+                                 if (clientError) {
+                                   callback(clientError);
+                                   return;
+                                 }
+                               }
+                               // Not a message we know, return the message directly.
+                               if (errorMessage) {
+                                 NSError *unexpecterErrorResponse = [FIRAuthErrorUtils
+                                     unexpectedErrorResponseWithDeserializedResponse:
+                                         errorDictionary];
+                                 callback(unexpecterErrorResponse);
+                                 return;
+                               }
+                             }
+                             // No error message at all, return the decoded response.
+                             callback([FIRAuthErrorUtils
+                                 unexpectedErrorResponseWithDeserializedResponse:dictionary]);
+                             return;
+                           }
+
+                           // Finally, we try to populate the response object with the JSON
+                           // values.
+                           if (![response setWithDictionary:dictionary error:&error]) {
+                             callback([FIRAuthErrorUtils
+                                 RPCResponseDecodingErrorWithDeserializedResponse:dictionary
+                                                                  underlyingError:error]);
+                             return;
+                           }
+                           // In case returnIDPCredential of a verifyAssertion request is set to
+                           // @YES, the server may return a 200 with a response that may contain a
+                           // server error.
+                           if ([request isKindOfClass:[FIRVerifyAssertionRequest class]]) {
+                             FIRVerifyAssertionRequest *verifyAssertionRequest =
+                                 (FIRVerifyAssertionRequest *)request;
+                             if (verifyAssertionRequest.returnIDPCredential) {
+                               NSString *errorMessage =
+                                   dictionary[kReturnIDPCredentialErrorMessageKey];
+                               if ([errorMessage isKindOfClass:[NSString class]]) {
+                                 NSString *errorString = (NSString *)errorMessage;
+                                 NSError *clientError =
+                                     [[self class] clientErrorWithServerErrorMessage:errorString
+                                                                     errorDictionary:@{}
+                                                                            response:response];
+                                 if (clientError) {
+                                   callback(clientError);
+                                   return;
+                                 }
+                               }
+                             }
+                           }
+                           // Success! The response object originally passed in can be used by the
+                           // caller.
+                           callback(nil);
+                         }];
+}
+
+/** @fn clientErrorWithServerErrorMessage:errorDictionary:
+    @brief Translates known server errors to client errors.
+    @param serverErrorMessage The error message from the server.
+    @param errorDictionary The error part of the response from the server.
+    @param response The response from the server RPC.
+    @return A client error, if any.
+ */
++ (nullable NSError *)clientErrorWithServerErrorMessage:(NSString *)serverErrorMessage
+                                        errorDictionary:(NSDictionary *)errorDictionary
+                                               response:(id<FIRAuthRPCResponse>)response {
+  NSString *shortErrorMessage = serverErrorMessage;
+  NSString *serverDetailErrorMessage;
+  NSRange colonRange = [serverErrorMessage rangeOfString:@":"];
+  if (colonRange.location != NSNotFound) {
+    shortErrorMessage = [serverErrorMessage substringToIndex:colonRange.location];
+    shortErrorMessage =
+        [shortErrorMessage stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+    serverDetailErrorMessage = [serverErrorMessage substringFromIndex:colonRange.location + 1];
+    serverDetailErrorMessage = [serverDetailErrorMessage
+        stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+  }
+
+  // Delegate the responsibility for constructing the client error to the response object,
+  // if possible.
+  SEL clientErrorWithServerErrorMessageSelector = @selector(clientErrorWithShortErrorMessage:
+                                                                          detailErrorMessage:);
+  if ([response respondsToSelector:clientErrorWithServerErrorMessageSelector]) {
+    NSError *error = [response clientErrorWithShortErrorMessage:shortErrorMessage
+                                             detailErrorMessage:serverDetailErrorMessage];
+    if (error) {
+      return error;
+    }
+  }
+
+  if ([shortErrorMessage isEqualToString:kUserNotFoundErrorMessage]) {
+    return [FIRAuthErrorUtils userNotFoundErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUserDeletedErrorMessage]) {
+    return [FIRAuthErrorUtils userNotFoundErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidLocalIDErrorMessage]) {
+    // This case shouldn't be necessary but it is for now: b/27908364 .
+    return [FIRAuthErrorUtils userNotFoundErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUserTokenExpiredErrorMessage]) {
+    return [FIRAuthErrorUtils userTokenExpiredErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kTooManyRequestsErrorMessage]) {
+    return [FIRAuthErrorUtils tooManyRequestsErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidCustomTokenErrorMessage]) {
+    return [FIRAuthErrorUtils invalidCustomTokenErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kCustomTokenMismatch]) {
+    return [FIRAuthErrorUtils customTokenMistmatchErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidCredentialErrorMessage] ||
+      [shortErrorMessage isEqualToString:kInvalidPendingToken]) {
+    return [FIRAuthErrorUtils invalidCredentialErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUserDisabledErrorMessage]) {
+    return [FIRAuthErrorUtils userDisabledErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kOperationNotAllowedErrorMessage]) {
+    return [FIRAuthErrorUtils operationNotAllowedErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kPasswordLoginDisabledErrorMessage]) {
+    return [FIRAuthErrorUtils operationNotAllowedErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kEmailAlreadyInUseErrorMessage]) {
+    return [FIRAuthErrorUtils emailAlreadyInUseErrorWithEmail:nil];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidEmailErrorMessage]) {
+    return [FIRAuthErrorUtils invalidEmailErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  // "INVALID_IDENTIFIER" can be returned by createAuthURI RPC. Considering email addresses are
+  //  currently the only identifiers, we surface the FIRAuthErrorCodeInvalidEmail error code in this
+  //  case.
+  if ([shortErrorMessage isEqualToString:kInvalidIdentifierErrorMessage]) {
+    return [FIRAuthErrorUtils invalidEmailErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kWrongPasswordErrorMessage]) {
+    return [FIRAuthErrorUtils wrongPasswordErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kCredentialTooOldErrorMessage]) {
+    return [FIRAuthErrorUtils requiresRecentLoginErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidUserTokenErrorMessage]) {
+    return [FIRAuthErrorUtils invalidUserTokenErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kFederatedUserIDAlreadyLinkedMessage]) {
+    FIROAuthCredential *credential;
+    NSString *email;
+    if ([response isKindOfClass:[FIRVerifyAssertionResponse class]]) {
+      FIRVerifyAssertionResponse *verifyAssertion = (FIRVerifyAssertionResponse *)response;
+      credential = [[FIROAuthCredential alloc] initWithVerifyAssertionResponse:verifyAssertion];
+      email = verifyAssertion.email;
+    }
+    return [FIRAuthErrorUtils credentialAlreadyInUseErrorWithMessage:serverDetailErrorMessage
+                                                          credential:credential
+                                                               email:email];
+  }
+
+  if ([shortErrorMessage isEqualToString:kWeakPasswordErrorMessagePrefix]) {
+    return [FIRAuthErrorUtils weakPasswordErrorWithServerResponseReason:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kExpiredActionCodeErrorMessage]) {
+    return [FIRAuthErrorUtils expiredActionCodeErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidActionCodeErrorMessage]) {
+    return [FIRAuthErrorUtils invalidActionCodeErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingEmailErrorMessage]) {
+    return [FIRAuthErrorUtils missingEmailErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidSenderEmailErrorMessage]) {
+    return [FIRAuthErrorUtils invalidSenderErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidMessagePayloadErrorMessage]) {
+    return [FIRAuthErrorUtils invalidMessagePayloadErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidRecipientEmailErrorMessage]) {
+    return [FIRAuthErrorUtils invalidRecipientEmailErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingIosBundleIDErrorMessage]) {
+    return [FIRAuthErrorUtils missingIosBundleIDErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingAndroidPackageNameErrorMessage]) {
+    return [FIRAuthErrorUtils missingAndroidPackageNameErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUnauthorizedDomainErrorMessage]) {
+    return [FIRAuthErrorUtils unauthorizedDomainErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidContinueURIErrorMessage]) {
+    return [FIRAuthErrorUtils invalidContinueURIErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidProviderIDErrorMessage]) {
+    return [FIRAuthErrorUtils invalidProviderIDErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidDynamicLinkDomainErrorMessage]) {
+    return [FIRAuthErrorUtils invalidDynamicLinkDomainErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingContinueURIErrorMessage]) {
+    return [FIRAuthErrorUtils missingContinueURIErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidPhoneNumberErrorMessage]) {
+    return [FIRAuthErrorUtils invalidPhoneNumberErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidSessionInfoErrorMessage]) {
+    return [FIRAuthErrorUtils invalidVerificationIDErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidVerificationCodeErrorMessage]) {
+    return [FIRAuthErrorUtils invalidVerificationCodeErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kSessionExpiredErrorMessage]) {
+    return [FIRAuthErrorUtils sessionExpiredErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingAppTokenErrorMessage]) {
+    return [FIRAuthErrorUtils missingAppTokenErrorWithUnderlyingError:nil];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingAppCredentialErrorMessage]) {
+    return [FIRAuthErrorUtils missingAppCredentialWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidAppCredentialErrorMessage]) {
+    return [FIRAuthErrorUtils invalidAppCredentialWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kQuoutaExceededErrorMessage]) {
+    return [FIRAuthErrorUtils quotaExceededErrorWithMessage:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kAppNotVerifiedErrorMessage]) {
+    return [FIRAuthErrorUtils appNotVerifiedErrorWithMessage:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingClientIdentifier]) {
+    return [FIRAuthErrorUtils missingClientIdentifierErrorWithMessage:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kCaptchaCheckFailedErrorMessage]) {
+    return [FIRAuthErrorUtils captchaCheckFailedErrorWithMessage:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingOrInvalidNonceErrorMessage]) {
+    return [FIRAuthErrorUtils missingOrInvalidNonceErrorWithMessage:serverDetailErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingMFAPendingCredentialErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeMissingMultiFactorSession
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMissingMFAEnrollmentIDErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeMissingMultiFactorInfo
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kInvalidMFAPendingCredentialErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeInvalidMultiFactorSession
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kMFAEnrollmentNotFoundErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeMultiFactorInfoNotFound
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kAdminOnlyOperationErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeAdminRestrictedOperation
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUnverifiedEmailErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeUnverifiedEmail
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kSecondFactorExistsErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeSecondFactorAlreadyEnrolled
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kSecondFactorLimitExceededErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeMaximumSecondFactorCountExceeded
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUnsupportedFirstFactorErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeUnsupportedFirstFactor
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kEmailChangeNeedsVerificationErrorMessage]) {
+    return [FIRAuthErrorUtils errorWithCode:FIRAuthInternalErrorCodeEmailChangeNeedsVerification
+                                    message:serverErrorMessage];
+  }
+
+  if ([shortErrorMessage isEqualToString:kTenantIDMismatch]) {
+    return [FIRAuthErrorUtils tenantIDMismatchError];
+  }
+
+  if ([shortErrorMessage isEqualToString:kUnsupportedTenantOperation]) {
+    return [FIRAuthErrorUtils unsupportedTenantOperationError];
+  }
+
+  // In this case we handle an error that might be specified in the underlying errors dictionary,
+  // the error message in determined based on the @c reason key in the dictionary.
+  if (errorDictionary[kErrorsKey]) {
+    // Check for underlying error with reason = keyInvalid;
+    id underlyingErrors = errorDictionary[kErrorsKey];
+    if ([underlyingErrors isKindOfClass:[NSArray class]]) {
+      NSArray *underlyingErrorsArray = (NSArray *)underlyingErrors;
+      for (id underlyingError in underlyingErrorsArray) {
+        if ([underlyingError isKindOfClass:[NSDictionary class]]) {
+          NSDictionary *underlyingErrorDictionary = (NSDictionary *)underlyingError;
+          NSString *reason = underlyingErrorDictionary[kReasonKey];
+          if ([reason hasPrefix:kInvalidKeyReasonValue]) {
+            return [FIRAuthErrorUtils invalidAPIKeyError];
+          }
+          if ([reason isEqualToString:kAppNotAuthorizedReasonValue]) {
+            return [FIRAuthErrorUtils appNotAuthorizedError];
+          }
+        }
+      }
+    }
+  }
+  return nil;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h
new file mode 100644
index 0000000..9ca4f44
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthRequestConfiguration;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @protocol FIRAuthRPCRequest
+    @brief The generic interface for an RPC request needed by @c FIRAuthBackend.
+ */
+@protocol FIRAuthRPCRequest <NSObject>
+
+/** @fn requestURL
+    @brief Gets the request's full URL.
+ */
+- (NSURL *)requestURL;
+
+@optional
+
+/** @fn containsPostBody
+    @brief Returns whether the request contains a post body or not. Requests without a post body
+        are get requests.
+    @remarks The default implementation returns YES.
+ */
+- (BOOL)containsPostBody;
+
+/** @fn UnencodedHTTPRequestBodyWithError:
+    @brief Creates unencoded HTTP body representing the request.
+    @param error An out field for an error which occurred constructing the request.
+    @return The HTTP body data representing the request before any encoding, or nil for error.
+ */
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error;
+
+/** @fn requestConfiguration
+    @brief Obtains the request configurations if available.
+    @return Returns the request configurations.
+ */
+- (FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h
new file mode 100644
index 0000000..0fe981a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @protocol FIRAuthRPCResponse
+    @brief The generic interface for an RPC response needed by @c FIRAuthBackend.
+ */
+@protocol FIRAuthRPCResponse <NSObject>
+
+/** @fn setFieldsWithDictionary:error:
+    @brief Sets the response instance from the decoded JSON response.
+    @param dictionary The dictionary decoded from HTTP JSON response.
+    @param error An out field for an error which occurred constructing the request.
+    @return Whether the operation was successful or not.
+ */
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error;
+
+@optional
+
+/** @fn clientErrorWithshortErrorMessage:detailErrorMessage
+    @brief This optional method allows response classes to create client errors given a short error
+        message and a detail error message from the server.
+    @param shortErrorMessage The short error message from the server.
+    @param detailErrorMessage The detailed error message from the server.
+    @return A client error, if any.
+ */
+- (nullable NSError *)clientErrorWithShortErrorMessage:(NSString *)shortErrorMessage
+                                    detailErrorMessage:(nullable NSString *)detailErrorMessage;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h
new file mode 100644
index 0000000..46a42c5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthRequestConfiguration
+    @brief Defines configurations to be added to a request to Firebase Auth's backend.
+  */
+@interface FIRAuthRequestConfiguration : NSObject
+
+/** @property APIKey
+    @brief The Firebase Auth API key used in the request.
+ */
+@property(nonatomic, copy, readonly) NSString *APIKey;
+
+/** @property LanguageCode
+    @brief The language code used in the request.
+ */
+@property(nonatomic, copy, nullable) NSString *languageCode;
+
+/** @property additionalFrameworkMarker
+    @brief Additional framework marker that will be added as part of the header of every request.
+ */
+@property(nonatomic, copy, nullable) NSString *additionalFrameworkMarker;
+
+/** @property emulatorHostAndPort
+    @brief If set, the local emulator host and port to point to instead of the remote backend.
+ */
+@property(nonatomic, copy, nullable) NSString *emulatorHostAndPort;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithRequestClass:APIKey:authLanguage:
+    @brief Designated initializer.
+    @param APIKey The API key to be used in the request.
+ */
+- (nullable instancetype)initWithAPIKey:(NSString *)APIKey NS_DESIGNATED_INITIALIZER;
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.m
new file mode 100644
index 0000000..40996e5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.m	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthRequestConfiguration
+
+- (nullable instancetype)initWithAPIKey:(NSString *)APIKey {
+  self = [super init];
+  if (self) {
+    _APIKey = [APIKey copy];
+  }
+  return self;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h
new file mode 100644
index 0000000..b021d53
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+
+@class FIRAuthRequestConfiguration;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRIdentityToolkitRequest
+    @brief Represents a request to an identity toolkit endpoint.
+ */
+@interface FIRIdentityToolkitRequest : NSObject
+
+/** @property endpoint
+    @brief Gets the RPC's endpoint.
+ */
+@property(nonatomic, copy, readonly) NSString *endpoint;
+
+/** @property APIKey
+    @brief Gets the client's API key used for the request.
+ */
+@property(nonatomic, copy, readonly) NSString *APIKey;
+
+/** @property tenantID
+    @brief The tenant ID of the request. nil if none is available.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *tenantID;
+
+/** @fn init
+    @brief Please use initWithEndpoint:APIKey:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithEndpoint:APIKey:
+    @brief Designated initializer.
+    @param endpoint The endpoint name.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                      useIdentityPlatform:(BOOL)useIdentityPlatform
+                               useStaging:(BOOL)useStaging;
+
+/** @fn requestURL
+    @brief Gets the request's full URL.
+ */
+- (NSURL *)requestURL;
+
+/** @fn requestConfiguration
+    @brief Gets the request's configuration.
+ */
+- (FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.m
new file mode 100644
index 0000000..a98ebbf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.m	
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *const kHttpsProtocol = @"https:";
+static NSString *const kHttpProtocol = @"http:";
+
+static NSString *const kFirebaseAuthAPIURLFormat =
+    @"%@//%@/identitytoolkit/v3/relyingparty/%@?key=%@";
+static NSString *const kIdentityPlatformAPIURLFormat = @"%@//%@/v2/%@?key=%@";
+static NSString *const kEmulatorHostAndPrefixFormat = @"%@/%@";
+
+static NSString *gAPIHost = @"www.googleapis.com";
+
+static NSString *kFirebaseAuthAPIHost = @"www.googleapis.com";
+static NSString *kIdentityPlatformAPIHost = @"identitytoolkit.googleapis.com";
+
+static NSString *kFirebaseAuthStagingAPIHost = @"staging-www.sandbox.googleapis.com";
+static NSString *kIdentityPlatformStagingAPIHost =
+    @"staging-identitytoolkit.sandbox.googleapis.com";
+
+@implementation FIRIdentityToolkitRequest {
+  FIRAuthRequestConfiguration *_requestConfiguration;
+
+  BOOL _useIdentityPlatform;
+
+  BOOL _useStaging;
+}
+
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super init];
+  if (self) {
+    _APIKey = [requestConfiguration.APIKey copy];
+    _endpoint = [endpoint copy];
+    _requestConfiguration = requestConfiguration;
+    _useIdentityPlatform = NO;
+    _useStaging = NO;
+
+    // Automatically set the tenant ID. If the request is initialized before FIRAuth is configured,
+    // set tenant ID to nil.
+    @try {
+      _tenantID = [FIRAuth auth].tenantID;
+    } @catch (NSException *e) {
+      _tenantID = nil;
+    }
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                      useIdentityPlatform:(BOOL)useIdentityPlatform
+                               useStaging:(BOOL)useStaging {
+  self = [self initWithEndpoint:endpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _useIdentityPlatform = useIdentityPlatform;
+    _useStaging = useStaging;
+  }
+  return self;
+}
+
+- (BOOL)containsPostBody {
+  return YES;
+}
+
+- (NSURL *)requestURL {
+  NSString *apiURLFormat;
+  NSString *apiProtocol;
+  NSString *apiHostAndPathPrefix;
+
+  NSString *emulatorHostAndPort = _requestConfiguration.emulatorHostAndPort;
+
+  if (_useIdentityPlatform) {
+    apiURLFormat = kIdentityPlatformAPIURLFormat;
+    apiProtocol = kHttpsProtocol;
+    if (emulatorHostAndPort) {
+      apiProtocol = kHttpProtocol;
+      apiHostAndPathPrefix =
+          [NSString stringWithFormat:kEmulatorHostAndPrefixFormat, emulatorHostAndPort,
+                                     kIdentityPlatformAPIHost];
+    } else if (_useStaging) {
+      apiHostAndPathPrefix = kIdentityPlatformStagingAPIHost;
+    } else {
+      apiHostAndPathPrefix = kIdentityPlatformAPIHost;
+    }
+  } else {
+    apiURLFormat = kFirebaseAuthAPIURLFormat;
+    apiProtocol = kHttpsProtocol;
+    if (emulatorHostAndPort) {
+      apiProtocol = kHttpProtocol;
+      apiHostAndPathPrefix = [NSString
+          stringWithFormat:kEmulatorHostAndPrefixFormat, emulatorHostAndPort, kFirebaseAuthAPIHost];
+    } else if (_useStaging) {
+      apiHostAndPathPrefix = kFirebaseAuthStagingAPIHost;
+    } else {
+      apiHostAndPathPrefix = kFirebaseAuthAPIHost;
+    }
+  }
+  NSString *URLString = [NSString
+      stringWithFormat:apiURLFormat, apiProtocol, apiHostAndPathPrefix, _endpoint, _APIKey];
+  NSURL *URL = [NSURL URLWithString:URLString];
+  return URL;
+}
+
+- (FIRAuthRequestConfiguration *)requestConfiguration {
+  return _requestConfiguration;
+}
+
+#pragma mark - Internal API for development
+
++ (NSString *)host {
+  return gAPIHost;
+}
+
++ (void)setHost:(NSString *)host {
+  gAPIHost = host;
+}
+
+NS_ASSUME_NONNULL_END
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h
new file mode 100644
index 0000000..633ffa9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h	
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRCreateAuthURIRequest
+    @brief Represents the parameters for the createAuthUri endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/createAuthUri
+ */
+@interface FIRCreateAuthURIRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property identifier
+    @brief The email or federated ID of the user.
+ */
+@property(nonatomic, copy) NSString *identifier;
+
+/** @property continueURI
+    @brief The URI to which the IDP redirects the user after the federated login flow.
+ */
+@property(nonatomic, copy) NSString *continueURI;
+
+/** @property openIDRealm
+    @brief Optional realm for OpenID protocol. The sub string "scheme://domain:port" of the param
+        "continueUri" is used if this is not set.
+ */
+@property(nonatomic, copy, nullable) NSString *openIDRealm;
+
+/** @property providerID
+    @brief The IdP ID. For white listed IdPs it's a short domain name e.g. google.com, aol.com,
+        live.net and yahoo.com. For other OpenID IdPs it's the OP identifier.
+ */
+@property(nonatomic, copy, nullable) NSString *providerID;
+
+/** @property clientID
+    @brief The relying party OAuth client ID.
+ */
+@property(nonatomic, copy, nullable) NSString *clientID;
+
+/** @property context
+    @brief The opaque value used by the client to maintain context info between the authentication
+        request and the IDP callback.
+ */
+@property(nonatomic, copy, nullable) NSString *context;
+
+/** @property appID
+    @brief The iOS client application's bundle identifier.
+ */
+@property(nonatomic, copy, nullable) NSString *appID;
+
+/** @fn initWithEndpoint:requestConfiguration:requestConfiguration.
+    @brief Please use initWithIdentifier:continueURI:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithIdentifier:continueURI:requestConfiguration:
+    @brief Designated initializer.
+    @param identifier The email or federated ID of the user.
+    @param continueURI The URI to which the IDP redirects the user after the federated login flow.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithIdentifier:(NSString *)identifier
+                                continueURI:(NSString *)continueURI
+                       requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.m
new file mode 100644
index 0000000..8a7baa6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.m	
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kCreateAuthURIEndpoint
+    @brief The "createAuthUri" endpoint.
+ */
+static NSString *const kCreateAuthURIEndpoint = @"createAuthUri";
+
+/** @var kProviderIDKey
+    @brief The key for the "providerId" value in the request.
+ */
+static NSString *const kProviderIDKey = @"providerId";
+
+/** @var kIdentifierKey
+    @brief The key for the "identifier" value in the request.
+ */
+static NSString *const kIdentifierKey = @"identifier";
+
+/** @var kContinueURIKey
+    @brief The key for the "continueUri" value in the request.
+ */
+static NSString *const kContinueURIKey = @"continueUri";
+
+/** @var kOpenIDRealmKey
+    @brief The key for the "openidRealm" value in the request.
+ */
+static NSString *const kOpenIDRealmKey = @"openidRealm";
+
+/** @var kClientIDKey
+    @brief The key for the "clientId" value in the request.
+ */
+static NSString *const kClientIDKey = @"clientId";
+
+/** @var kContextKey
+    @brief The key for the "context" value in the request.
+ */
+static NSString *const kContextKey = @"context";
+
+/** @var kAppIDKey
+    @brief The key for the "appId" value in the request.
+ */
+static NSString *const kAppIDKey = @"appId";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRCreateAuthURIRequest
+
+- (nullable instancetype)initWithIdentifier:(NSString *)identifier
+                                continueURI:(NSString *)continueURI
+                       requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kCreateAuthURIEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _identifier = [identifier copy];
+    _continueURI = [continueURI copy];
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody =
+      [@{kIdentifierKey : _identifier, kContinueURIKey : _continueURI} mutableCopy];
+  if (_providerID) {
+    postBody[kProviderIDKey] = _providerID;
+  }
+  if (_openIDRealm) {
+    postBody[kOpenIDRealmKey] = _openIDRealm;
+  }
+  if (_clientID) {
+    postBody[kClientIDKey] = _clientID;
+  }
+  if (_context) {
+    postBody[kContextKey] = _context;
+  }
+  if (_appID) {
+    postBody[kAppIDKey] = _appID;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h
new file mode 100644
index 0000000..79c5ea7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRCreateAuthURIResponse
+    @brief Represents the parameters for the createAuthUri endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/createAuthUri
+ */
+@interface FIRCreateAuthURIResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property authUri
+    @brief The URI used by the IDP to authenticate the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *authURI;
+
+/** @property registered
+    @brief Whether the user is registered if the identifier is an email.
+ */
+@property(nonatomic, assign, readonly) BOOL registered;
+
+/** @property providerId
+    @brief The provider ID of the auth URI.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *providerID;
+
+/** @property forExistingProvider
+    @brief True if the authUri is for user's existing provider.
+ */
+@property(nonatomic, assign, readonly) BOOL forExistingProvider;
+
+/** @property allProviders
+    @brief A list of provider IDs the passed @c identifier could use to sign in with.
+ */
+@property(nonatomic, copy, readonly, nullable) NSArray<NSString *> *allProviders;
+
+/** @property signinMethods
+    @brief A list of sign-in methods available for the passed @c identifier.
+ */
+@property(nonatomic, copy, readonly, nullable) NSArray<NSString *> *signinMethods;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.m
new file mode 100644
index 0000000..bf422c9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.m	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRCreateAuthURIResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRCreateAuthURIResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _providerID = [dictionary[@"providerId"] copy];
+  _authURI = [dictionary[@"authUri"] copy];
+  _registered = [dictionary[@"registered"] boolValue];
+  _forExistingProvider = [dictionary[@"forExistingProvider"] boolValue];
+  _allProviders = [dictionary[@"allProviders"] copy];
+  _signinMethods = [dictionary[@"signinMethods"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h
new file mode 100644
index 0000000..b6b6e40
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRDeleteAccountRequest
+    @brief Represents the parameters for the deleteAccount endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/deleteAccount
+ */
+@interface FIRDeleteAccountRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @fn initWithEndpoint:requestConfiguration:requestConfiguration.
+    @brief Please use initWitLocalID:accessToken:requestConfiguration instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWitLocalID:accessToken:requestConfiguration.
+    @brief Designated initializer.
+    @param localID The local ID.
+    @param accessToken The access token.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWitLocalID:(NSString *)localID
+                            accessToken:(NSString *)accessToken
+                   requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.m
new file mode 100644
index 0000000..8bc6c52
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.m	
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kCreateAuthURIEndpoint
+    @brief The "deleteAccount" endpoint.
+ */
+static NSString *const kDeleteAccountEndpoint = @"deleteAccount";
+
+/** @var kIDTokenKey
+    @brief The key for the "idToken" value in the request. This is actually the STS Access Token,
+        despite it's confusing (backwards compatiable) parameter name.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kLocalIDKey
+    @brief The key for the "localID" value in the request.
+ */
+static NSString *const kLocalIDKey = @"localId";
+
+@implementation FIRDeleteAccountRequest {
+  /** @var _accessToken
+      @brief The STS Access Token of the authenticated user.
+   */
+  NSString *_accessToken;
+
+  /** @var _localID
+      @brief The localID of the user.
+   */
+  NSString *_localID;
+}
+
+- (nullable instancetype)initWitLocalID:(NSString *)localID
+                            accessToken:(NSString *)accessToken
+                   requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kDeleteAccountEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _localID = [localID copy];
+    _accessToken = [accessToken copy];
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  postBody[kIDTokenKey] = _accessToken;
+  postBody[kLocalIDKey] = _localID;
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h
new file mode 100644
index 0000000..bc4d0d9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRDeleteAccountResponse
+    @brief Represents the response from the deleteAccount endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/deleteAccount
+ */
+@interface FIRDeleteAccountResponse : NSObject <FIRAuthRPCResponse>
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.m
new file mode 100644
index 0000000..fba1b6b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.m	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRDeleteAccountResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h
new file mode 100644
index 0000000..752ffb4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIREmailLinkSignInRequest
+    @brief Represents the parameters for the emailLinkSignin endpoint.
+ */
+@interface FIREmailLinkSignInRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+#pragma mark - Components of "postBody"
+
+/** @property email
+    @brief The email identifier used to complete the email link sign-in.
+ */
+@property(nonatomic, copy, readonly) NSString *email;
+
+/** @property oobCode
+    @brief The OOB code used to complete the email link sign-in flow.
+ */
+@property(nonatomic, copy, readonly) NSString *oobCode;
+
+/** @property IDToken
+    @brief The ID Token code potentially used to complete the email link sign-in flow.
+ */
+@property(nonatomic, copy) NSString *IDToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithProviderID:requestConfifuration instead.
+ */
+- (instancetype)initWithEndpoint:(NSString *)endpoint
+            requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration NS_UNAVAILABLE;
+
+/** @fn initWithProviderID:requestConfifuration
+    @brief Designated initializer.
+    @param email The email identifier used to complete hte email link sign-in flow.
+    @param oobCode The OOB code used to complete the email link sign-in flow.
+    @param requestConfiguration An object containing configurations to be added to the request.
+
+ */
+- (instancetype)initWithEmail:(NSString *)email
+                      oobCode:(NSString *)oobCode
+         requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.m
new file mode 100644
index 0000000..5ce4522
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.m	
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kEmailLinkSigninEndpoint
+    @brief The "EmailLinkSignin" endpoint.
+ */
+static NSString *const kEmailLinkSigninEndpoint = @"emailLinkSignin";
+
+/** @var kEmailKey
+    @brief The key for the "identifier" value in the request.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kEmailLinkKey
+    @brief The key for the "emailLink" value in the request.
+ */
+static NSString *const kOOBCodeKey = @"oobCode";
+
+/** @var kIDTokenKey
+    @brief The key for the "IDToken" value in the request.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kPostBodyKey
+    @brief The key for the "postBody" value in the request.
+ */
+static NSString *const kPostBodyKey = @"postBody";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIREmailLinkSignInRequest
+
+- (instancetype)initWithEmail:(NSString *)email
+                      oobCode:(NSString *)oobCode
+         requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kEmailLinkSigninEndpoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _email = email;
+    _oobCode = oobCode;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [@{
+    kEmailKey : _email,
+    kOOBCodeKey : _oobCode,
+  } mutableCopy];
+
+  if (_IDToken) {
+    postBody[kIDTokenKey] = _IDToken;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h
new file mode 100644
index 0000000..c12b0aa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyAssertionResponse
+    @brief Represents the response from the emailLinkSignin endpoint.
+ */
+@interface FIREmailLinkSignInResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property IDToken
+    @brief The ID token in the email link sign-in response.
+ */
+@property(nonatomic, copy, readonly) NSString *IDToken;
+
+/** @property email
+    @brief The email returned by the IdP.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property refreshToken
+    @brief The refreshToken returned by the server.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property isNewUser
+    @brief Flag indicating that the user signing in is a new user and not a returning user.
+ */
+@property(nonatomic, assign) BOOL isNewUser;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.m
new file mode 100644
index 0000000..9f125e1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.m	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIREmailLinkSignInResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _email = [dictionary[@"email"] copy];
+  _IDToken = [dictionary[@"idToken"] copy];
+  _isNewUser = [dictionary[@"isNewUser"] boolValue];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h
new file mode 100644
index 0000000..7d78500
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGetAccountInfoRequest
+    @brief Represents the parameters for the getAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/getAccountInfo
+ */
+@interface FIRGetAccountInfoRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property accessToken
+    @brief The STS Access Token for the authenticated user.
+ */
+@property(nonatomic, copy) NSString *accessToken;
+
+/** @fn initWithEndpoint:requestConfiguration:requestConfiguration
+    @brief Please use initWithAccessToken:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithAccessToken:requestConfiguration
+    @brief Designated initializer.
+    @param accessToken The Access Token of the authenticated user.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithAccessToken:(NSString *)accessToken
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.m
new file mode 100644
index 0000000..db86f93
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.m	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kGetAccountInfoEndpoint
+    @brief The "getAccountInfo" endpoint.
+ */
+static NSString *const kGetAccountInfoEndpoint = @"getAccountInfo";
+
+/** @var kIDTokenKey
+    @brief The key for the "idToken" value in the request. This is actually the STS Access Token,
+        despite it's confusing (backwards compatiable) parameter name.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+@implementation FIRGetAccountInfoRequest
+
+- (nullable instancetype)initWithAccessToken:(NSString *)accessToken
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kGetAccountInfoEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _accessToken = [accessToken copy];
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  return @{kIDTokenKey : _accessToken};
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h
new file mode 100644
index 0000000..14e7f88
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h	
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGetAccountInfoResponseProviderUserInfo
+    @brief Represents the provider user info part of the response from the getAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/getAccountInfo
+ */
+@interface FIRGetAccountInfoResponseProviderUserInfo : NSObject
+
+/** @property providerID
+    @brief The ID of the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *providerID;
+
+/** @property displayName
+    @brief The user's display name at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property photoURL
+    @brief The user's photo URL at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSURL *photoURL;
+
+/** @property federatedID
+    @brief The user's identifier at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *federatedID;
+
+/** @property email
+    @brief The user's email at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property phoneNumber
+    @brief A phone number associated with the user.
+ */
+@property(nonatomic, readonly, nullable) NSString *phoneNumber;
+
+/** @fn init
+    @brief Please use initWithDictionary:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithAPIKey:
+    @brief Designated initializer.
+    @param dictionary The provider user info data from endpoint.
+ */
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** @class FIRGetAccountInfoResponseUser
+    @brief Represents the firebase user info part of the response from the getAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/getAccountInfo
+ */
+@interface FIRGetAccountInfoResponseUser : NSObject
+
+/** @property localID
+    @brief The ID of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *localID;
+
+/** @property email
+    @brief The email or the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property emailVerified
+    @brief Whether the email has been verified.
+ */
+@property(nonatomic, assign, readonly) BOOL emailVerified;
+
+/** @property displayName
+    @brief The display name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property photoURL
+    @brief The user's photo URL.
+ */
+@property(nonatomic, strong, readonly, nullable) NSURL *photoURL;
+
+/** @property creationDate
+    @brief The user's creation date.
+ */
+@property(nonatomic, strong, readonly, nullable) NSDate *creationDate;
+
+/** @property lastSignInDate
+    @brief The user's last login date.
+ */
+@property(nonatomic, strong, readonly, nullable) NSDate *lastLoginDate;
+
+/** @property providerUserInfo
+    @brief The user's profiles at the associated identity providers.
+ */
+@property(nonatomic, strong, readonly, nullable)
+    NSArray<FIRGetAccountInfoResponseProviderUserInfo *> *providerUserInfo;
+
+/** @property passwordHash
+    @brief Information about user's password.
+    @remarks This is not necessarily the hash of user's actual password.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *passwordHash;
+
+/** @property phoneNumber
+    @brief A phone number associated with the user.
+ */
+@property(nonatomic, readonly, nullable) NSString *phoneNumber;
+
+@property(nonatomic, strong, readonly, nullable)
+    NSArray<FIRAuthProtoMFAEnrollment *> *MFAEnrollments;
+
+/** @fn init
+    @brief Please use initWithDictionary:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithAPIKey:
+    @brief Designated initializer.
+    @param dictionary The provider user info data from endpoint.
+ */
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** @class FIRGetAccountInfoResponse
+    @brief Represents the response from the setAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/getAccountInfo
+ */
+@interface FIRGetAccountInfoResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property providerUserInfo
+    @brief The requested users' profiles.
+ */
+@property(nonatomic, strong, readonly, nullable) NSArray<FIRGetAccountInfoResponseUser *> *users;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.m
new file mode 100644
index 0000000..6b812bd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.m	
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h"
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kErrorKey
+    @brief The key for the "error" value in JSON responses from the server.
+ */
+static NSString *const kErrorKey = @"error";
+
+@implementation FIRGetAccountInfoResponseProviderUserInfo
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    _providerID = [dictionary[@"providerId"] copy];
+    _displayName = [dictionary[@"displayName"] copy];
+    NSString *photoURL = dictionary[@"photoUrl"];
+    if (photoURL) {
+      _photoURL = [NSURL URLWithString:photoURL];
+    }
+    _federatedID = [dictionary[@"federatedId"] copy];
+    _email = [dictionary[@"email"] copy];
+    _phoneNumber = [dictionary[@"phoneNumber"] copy];
+  }
+  return self;
+}
+
+@end
+
+@implementation FIRGetAccountInfoResponseUser
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    NSArray<NSDictionary *> *providerUserInfoData = dictionary[@"providerUserInfo"];
+    if (providerUserInfoData) {
+      NSMutableArray<FIRGetAccountInfoResponseProviderUserInfo *> *providerUserInfoArray =
+          [NSMutableArray arrayWithCapacity:providerUserInfoData.count];
+      for (NSDictionary *dictionary in providerUserInfoData) {
+        [providerUserInfoArray addObject:[[FIRGetAccountInfoResponseProviderUserInfo alloc]
+                                             initWithDictionary:dictionary]];
+      }
+      _providerUserInfo = [providerUserInfoArray copy];
+    }
+    _localID = [dictionary[@"localId"] copy];
+    _displayName = [dictionary[@"displayName"] copy];
+    _email = [dictionary[@"email"] copy];
+    NSString *photoURL = dictionary[@"photoUrl"];
+    if (photoURL) {
+      _photoURL = [NSURL URLWithString:photoURL];
+    }
+    if ([dictionary[@"createdAt"] isKindOfClass:[NSString class]]) {
+      // Divide by 1000 in order to convert miliseconds to seconds.
+      NSTimeInterval creationDateTimeInterval = [dictionary[@"createdAt"] doubleValue] / 1000;
+      _creationDate = [NSDate dateWithTimeIntervalSince1970:creationDateTimeInterval];
+    }
+    if ([dictionary[@"lastLoginAt"] isKindOfClass:[NSString class]]) {
+      // Divide by 1000 in order to convert miliseconds to seconds
+      NSTimeInterval creationDateTimeInterval = [dictionary[@"lastLoginAt"] doubleValue] / 1000;
+      _lastLoginDate = [NSDate dateWithTimeIntervalSince1970:creationDateTimeInterval];
+    }
+    _emailVerified = [dictionary[@"emailVerified"] boolValue];
+    _passwordHash = [dictionary[@"passwordHash"] copy];
+    _phoneNumber = [dictionary[@"phoneNumber"] copy];
+    NSArray<NSDictionary *> *MFAEnrollmentData = dictionary[@"mfaInfo"];
+    if (MFAEnrollmentData) {
+      NSMutableArray<FIRAuthProtoMFAEnrollment *> *MFAEnrollments =
+          [NSMutableArray arrayWithCapacity:MFAEnrollmentData.count];
+      for (NSDictionary *dictionary in MFAEnrollmentData) {
+        [MFAEnrollments
+            addObject:[[FIRAuthProtoMFAEnrollment alloc] initWithDictionary:dictionary]];
+      }
+      _MFAEnrollments = [MFAEnrollments copy];
+    }
+  }
+  return self;
+}
+
+@end
+
+@implementation FIRGetAccountInfoResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  NSArray<NSDictionary *> *usersData = dictionary[@"users"];
+  // The client side never sends a getAccountInfo request with multiple localID, so only one user
+  // data is expected in the response.
+  if (![usersData isKindOfClass:[NSArray class]] || usersData.count != 1) {
+    if (error) {
+      *error = [FIRAuthErrorUtils unexpectedResponseWithDeserializedResponse:dictionary];
+    }
+    return NO;
+  }
+  _users = @[ [[FIRGetAccountInfoResponseUser alloc] initWithDictionary:usersData.firstObject] ];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h
new file mode 100644
index 0000000..dc48a3e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h	
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+@class FIRActionCodeSettings;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @enum FIRGetOOBConfirmationCodeRequestType
+    @brief Types of OOB Confirmation Code requests.
+ */
+typedef NS_ENUM(NSInteger, FIRGetOOBConfirmationCodeRequestType) {
+  /** @var FIRGetOOBConfirmationCodeRequestTypePasswordReset
+      @brief Requests a password reset code.
+   */
+  FIRGetOOBConfirmationCodeRequestTypePasswordReset,
+
+  /** @var FIRGetOOBConfirmationCodeRequestTypeVerifyEmail
+      @brief Requests an email verification code.
+   */
+  FIRGetOOBConfirmationCodeRequestTypeVerifyEmail,
+
+  /** @var FIRGetOOBConfirmationCodeRequestTypeEmailLink
+      @brief Requests an email sign-in link.
+   */
+  FIRGetOOBConfirmationCodeRequestTypeEmailLink,
+
+  /** @var FIRGetOOBConfirmationCodeRequestTypeVerifyBeforeUpdateEmail
+      @brief Requests an verify before update email.
+   */
+  FIRGetOOBConfirmationCodeRequestTypeVerifyBeforeUpdateEmail,
+};
+
+/** @enum FIRGetOOBConfirmationCodeRequest
+    @brief Represents the parameters for the getOOBConfirmationCode endpoint.
+ */
+@interface FIRGetOOBConfirmationCodeRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property requestType
+    @brief The types of OOB Confirmation Code to request.
+ */
+@property(nonatomic, assign, readonly) FIRGetOOBConfirmationCodeRequestType requestType;
+
+/** @property email
+    @brief The email of the user.
+    @remarks For password reset.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *email;
+
+/** @property updatedEmail
+    @brief The new email to be updated.
+    @remarks For verifyBeforeUpdateEmail.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *updatedEmail;
+
+/** @property accessToken
+    @brief The STS Access Token of the authenticated user.
+    @remarks For email change.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *accessToken;
+
+/** @property continueURL
+    @brief This URL represents the state/Continue URL in the form of a universal link.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *continueURL;
+
+/** @property iOSBundleID
+    @brief The iOS bundle Identifier, if available.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *iOSBundleID;
+
+/** @property androidPackageName
+    @brief The Android package name, if available.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *androidPackageName;
+
+/** @property androidMinimumVersion
+    @brief The minimum Android version supported, if available.
+ */
+@property(nonatomic, copy, nullable, readonly) NSString *androidMinimumVersion;
+
+/** @property androidInstallIfNotAvailable
+    @brief Indicates whether or not the Android app should be installed if not already available.
+ */
+@property(nonatomic, assign, readonly) BOOL androidInstallApp;
+
+/** @property handleCodeInApp
+    @brief Indicates whether the action code link will open the app directly or after being
+        redirected from a Firebase owned web widget.
+ */
+@property(assign, nonatomic) BOOL handleCodeInApp;
+
+/** @property dynamicLinkDomain
+    @brief The Firebase Dynamic Link domain used for out of band code flow.
+ */
+@property(copy, nonatomic, nullable) NSString *dynamicLinkDomain;
+
+/** @fn passwordResetRequestWithEmail:actionCodeSettings:requestConfiguration:
+    @brief Creates a password reset request.
+    @param email The user's email address.
+    @param actionCodeSettings An object of FIRActionCodeSettings which specifies action code
+        settings to be applied to the password reset request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return A password reset request.
+ */
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    passwordResetRequestWithEmail:(NSString *)email
+               actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+             requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn verifyEmailRequestWithAccessToken:actionCodeSettings:requestConfiguration:
+    @brief Creates a password reset request.
+    @param accessToken The user's STS Access Token.
+    @param actionCodeSettings An object of FIRActionCodeSettings which specifies action code
+        settings to be applied to the email verification request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return A password reset request.
+ */
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    verifyEmailRequestWithAccessToken:(NSString *)accessToken
+                   actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                 requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn signInWithEmailLinkRequest:actionCodeSettings:requestConfiguration:
+    @brief Creates a sign-in with email link.
+    @param email The user's email address.
+    @param actionCodeSettings An object of FIRActionCodeSettings which specifies action code
+        settings to be applied to the email sign-in link.
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return An email sign-in link request.
+ */
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    signInWithEmailLinkRequest:(NSString *)email
+            actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+          requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn verifyBeforeUpdateEmailWithAccessToken:newEmail:actionCodeSettings:requestConfiguration:
+    @brief Creates a verifyBeforeUpdateEmail request.
+    @param accessToken The user's STS Access Token.
+    @param newEmail The user's email address to be updated.
+    @param actionCodeSettings An object of FIRActionCodeSettings which specifies action code
+        settings to be applied to the password reset request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return A verifyBeforeUpdateEmail request.
+ */
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    verifyBeforeUpdateEmailWithAccessToken:(NSString *)accessToken
+                                  newEmail:(NSString *)newEmail
+                        actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                      requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn init
+    @brief Please use a factory method.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.m
new file mode 100644
index 0000000..a749a54
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.m	
@@ -0,0 +1,296 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRActionCodeSettings.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kEndpoint
+    @brief The getOobConfirmationCode endpoint name.
+ */
+static NSString *const kGetOobConfirmationCodeEndpoint = @"getOobConfirmationCode";
+
+/** @var kRequestTypeKey
+    @brief The name of the required "requestType" property in the request.
+ */
+static NSString *const kRequestTypeKey = @"requestType";
+
+/** @var kEmailKey
+    @brief The name of the "email" property in the request.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kNewEmailKey
+    @brief The name of the "newEmail" property in the request.
+ */
+static NSString *const kNewEmailKey = @"newEmail";
+
+/** @var kIDTokenKey
+    @brief The key for the "idToken" value in the request. This is actually the STS Access Token,
+        despite it's confusing (backwards compatiable) parameter name.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kContinueURLKey
+    @brief The key for the "continue URL" value in the request.
+ */
+static NSString *const kContinueURLKey = @"continueUrl";
+
+/** @var kIosBundeIDKey
+    @brief The key for the "iOS Bundle Identifier" value in the request.
+ */
+static NSString *const kIosBundleIDKey = @"iOSBundleId";
+
+/** @var kAndroidPackageNameKey
+    @brief The key for the "Android Package Name" value in the request.
+ */
+static NSString *const kAndroidPackageNameKey = @"androidPackageName";
+
+/** @var kAndroidInstallAppKey
+    @brief The key for the request parameter indicating whether the android app should be installed
+        or not.
+ */
+static NSString *const kAndroidInstallAppKey = @"androidInstallApp";
+
+/** @var kAndroidMinimumVersionKey
+    @brief The key for the "minimum Android version supported" value in the request.
+ */
+static NSString *const kAndroidMinimumVersionKey = @"androidMinimumVersion";
+
+/** @var kCanHandleCodeInAppKey
+    @brief The key for the request parameter indicating whether the action code can be handled in
+        the app or not.
+ */
+static NSString *const kCanHandleCodeInAppKey = @"canHandleCodeInApp";
+
+/** @var kDynamicLinkDomainKey
+    @brief The key for the "dynamic link domain" value in the request.
+ */
+static NSString *const kDynamicLinkDomainKey = @"dynamicLinkDomain";
+
+/** @var kPasswordResetRequestTypeValue
+    @brief The value for the "PASSWORD_RESET" request type.
+ */
+static NSString *const kPasswordResetRequestTypeValue = @"PASSWORD_RESET";
+
+/** @var kEmailLinkSignInTypeValue
+    @brief The value for the "EMAIL_SIGNIN" request type.
+ */
+static NSString *const kEmailLinkSignInTypeValue = @"EMAIL_SIGNIN";
+
+/** @var kVerifyEmailRequestTypeValue
+    @brief The value for the "VERIFY_EMAIL" request type.
+ */
+static NSString *const kVerifyEmailRequestTypeValue = @"VERIFY_EMAIL";
+
+/** @var kVerifyBeforeUpdateEmailRequestTypeValue
+    @brief The value for the "VERIFY_AND_CHANGE_EMAIL" request type.
+ */
+static NSString *const kVerifyBeforeUpdateEmailRequestTypeValue = @"VERIFY_AND_CHANGE_EMAIL";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@interface FIRGetOOBConfirmationCodeRequest ()
+
+/** @fn initWithRequestType:email:APIKey:
+    @brief Designated initializer.
+    @param requestType The types of OOB Confirmation Code to request.
+    @param email The email of the user.
+    @param newEmail The email of the user to be updated.
+    @param accessToken The STS Access Token of the currently signed in user.
+    @param actionCodeSettings An object of FIRActionCodeSettings which specifies action code
+        settings to be applied to the OOB code request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithRequestType:(FIRGetOOBConfirmationCodeRequestType)requestType
+                                       email:(nullable NSString *)email
+                                    newEmail:(nullable NSString *)newEmail
+                                 accessToken:(nullable NSString *)accessToken
+                          actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+@implementation FIRGetOOBConfirmationCodeRequest
+
+/** @var requestTypeStringValueForRequestType:
+    @brief Returns the string equivilent for an @c FIRGetOOBConfirmationCodeRequestType value.
+ */
++ (NSString *)requestTypeStringValueForRequestType:
+    (FIRGetOOBConfirmationCodeRequestType)requestType {
+  switch (requestType) {
+    case FIRGetOOBConfirmationCodeRequestTypePasswordReset:
+      return kPasswordResetRequestTypeValue;
+    case FIRGetOOBConfirmationCodeRequestTypeVerifyEmail:
+      return kVerifyEmailRequestTypeValue;
+    case FIRGetOOBConfirmationCodeRequestTypeEmailLink:
+      return kEmailLinkSignInTypeValue;
+    case FIRGetOOBConfirmationCodeRequestTypeVerifyBeforeUpdateEmail:
+      return kVerifyBeforeUpdateEmailRequestTypeValue;
+      // No default case so that we get a compiler warning if a new value was added to the enum.
+  }
+}
+
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    passwordResetRequestWithEmail:(NSString *)email
+               actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+             requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  return [[self alloc] initWithRequestType:FIRGetOOBConfirmationCodeRequestTypePasswordReset
+                                     email:email
+                                  newEmail:nil
+                               accessToken:nil
+                        actionCodeSettings:actionCodeSettings
+                      requestConfiguration:requestConfiguration];
+}
+
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    verifyEmailRequestWithAccessToken:(NSString *)accessToken
+                   actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                 requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  return [[self alloc] initWithRequestType:FIRGetOOBConfirmationCodeRequestTypeVerifyEmail
+                                     email:nil
+                                  newEmail:nil
+                               accessToken:accessToken
+                        actionCodeSettings:actionCodeSettings
+                      requestConfiguration:requestConfiguration];
+}
+
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    signInWithEmailLinkRequest:(NSString *)email
+            actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+          requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  return [[self alloc] initWithRequestType:FIRGetOOBConfirmationCodeRequestTypeEmailLink
+                                     email:email
+                                  newEmail:nil
+                               accessToken:nil
+                        actionCodeSettings:actionCodeSettings
+                      requestConfiguration:requestConfiguration];
+}
+
++ (nullable FIRGetOOBConfirmationCodeRequest *)
+    verifyBeforeUpdateEmailWithAccessToken:(NSString *)accessToken
+                                  newEmail:(NSString *)newEmail
+                        actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                      requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  return
+      [[self alloc] initWithRequestType:FIRGetOOBConfirmationCodeRequestTypeVerifyBeforeUpdateEmail
+                                  email:nil
+                               newEmail:newEmail
+                            accessToken:accessToken
+                     actionCodeSettings:actionCodeSettings
+                   requestConfiguration:requestConfiguration];
+}
+
+- (nullable instancetype)initWithRequestType:(FIRGetOOBConfirmationCodeRequestType)requestType
+                                       email:(nullable NSString *)email
+                                    newEmail:(nullable NSString *)newEmail
+                                 accessToken:(nullable NSString *)accessToken
+                          actionCodeSettings:(nullable FIRActionCodeSettings *)actionCodeSettings
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kGetOobConfirmationCodeEndpoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _requestType = requestType;
+    _email = email;
+    _updatedEmail = newEmail;
+    _accessToken = accessToken;
+    _continueURL = actionCodeSettings.URL.absoluteString;
+    _iOSBundleID = actionCodeSettings.iOSBundleID;
+    _androidPackageName = actionCodeSettings.androidPackageName;
+    _androidMinimumVersion = actionCodeSettings.androidMinimumVersion;
+    _androidInstallApp = actionCodeSettings.androidInstallIfNotAvailable;
+    _handleCodeInApp = actionCodeSettings.handleCodeInApp;
+    _dynamicLinkDomain = actionCodeSettings.dynamicLinkDomain;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *body =
+      [@{kRequestTypeKey : [[self class] requestTypeStringValueForRequestType:_requestType]}
+          mutableCopy];
+
+  // For password reset requests, we only need an email address in addition to the already required
+  // fields.
+  if (_requestType == FIRGetOOBConfirmationCodeRequestTypePasswordReset) {
+    body[kEmailKey] = _email;
+  }
+
+  // For verify email requests, we only need an STS Access Token in addition to the already required
+  // fields.
+  if (_requestType == FIRGetOOBConfirmationCodeRequestTypeVerifyEmail) {
+    body[kIDTokenKey] = _accessToken;
+  }
+
+  // For email sign-in link requests, we only need an email address in addition to the already
+  // required fields.
+  if (_requestType == FIRGetOOBConfirmationCodeRequestTypeEmailLink) {
+    body[kEmailKey] = _email;
+  }
+
+  // For email sign-in link requests, we only need an STS Access Token, a new email address in
+  // addition to the already required fields.
+  if (_requestType == FIRGetOOBConfirmationCodeRequestTypeVerifyBeforeUpdateEmail) {
+    body[kNewEmailKey] = _updatedEmail;
+    body[kIDTokenKey] = _accessToken;
+  }
+
+  if (_continueURL) {
+    body[kContinueURLKey] = _continueURL;
+  }
+
+  if (_iOSBundleID) {
+    body[kIosBundleIDKey] = _iOSBundleID;
+  }
+
+  if (_androidPackageName) {
+    body[kAndroidPackageNameKey] = _androidPackageName;
+  }
+
+  if (_androidMinimumVersion) {
+    body[kAndroidMinimumVersionKey] = _androidMinimumVersion;
+  }
+
+  if (_androidInstallApp) {
+    body[kAndroidInstallAppKey] = @YES;
+  }
+
+  if (_handleCodeInApp) {
+    body[kCanHandleCodeInAppKey] = @YES;
+  }
+
+  if (_dynamicLinkDomain) {
+    body[kDynamicLinkDomainKey] = _dynamicLinkDomain;
+  }
+  if (self.tenantID) {
+    body[kTenantIDKey] = self.tenantID;
+  }
+
+  return body;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h
new file mode 100644
index 0000000..9ea445e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGetOOBConfirmationCodeResponse
+    @brief Represents the response from the getOobConfirmationCode endpoint.
+ */
+@interface FIRGetOOBConfirmationCodeResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property OOBCode
+    @brief The OOB code returned by the server in some cases.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *OOBCode;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.m
new file mode 100644
index 0000000..7eef688
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.m	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kOOBCodeKey
+    @brief The name of the field in the response JSON for the OOB code.
+ */
+static NSString *const kOOBCodeKey = @"oobCode";
+
+@implementation FIRGetOOBConfirmationCodeResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _OOBCode = [dictionary[kOOBCodeKey] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h
new file mode 100644
index 0000000..cfaefcc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRGetProjectConfigRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithRequestConfiguration:
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithTemporaryProof:phoneNumberAPIKey
+    @brief Designated initializer.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.m
new file mode 100644
index 0000000..402f220
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kGetProjectConfigEndPoint
+    @brief The "getProjectConfig" endpoint.
+ */
+static NSString *const kGetProjectConfigEndPoint = @"getProjectConfig";
+
+@implementation FIRGetProjectConfigRequest
+
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration {
+  return [super initWithEndpoint:kGetProjectConfigEndPoint
+            requestConfiguration:requestConfiguration];
+}
+
+- (BOOL)containsPostBody {
+  return NO;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h
new file mode 100644
index 0000000..71f79c9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRGetProjectConfigResponse
+    @brief Represents the response from the getProjectConfig endpoint.
+ */
+@interface FIRGetProjectConfigResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property projectID
+    @brief The unique ID pertaining to the current project.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *projectID;
+
+/** @property authorizedDomains
+    @brief A list of domains allowlisted for the current project.
+ */
+@property(nonatomic, strong, readonly, nullable) NSArray *authorizedDomains;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.m
new file mode 100644
index 0000000..38a3ba0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGetProjectConfigResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _projectID = [dictionary[@"projectId"] copy];
+  id authorizedDomains = dictionary[@"authorizedDomains"];
+  if ([authorizedDomains isKindOfClass:[NSString class]]) {
+    NSData *data = [authorizedDomains dataUsingEncoding:NSUTF8StringEncoding];
+    authorizedDomains = [NSJSONSerialization JSONObjectWithData:data
+                                                        options:NSJSONReadingMutableLeaves
+                                                          error:nil];
+  }
+  if ([authorizedDomains isKindOfClass:[NSArray class]]) {
+    _authorizedDomains = [[NSArray alloc] initWithArray:authorizedDomains copyItems:YES];
+  }
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h
new file mode 100644
index 0000000..1b918f5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRResetPasswordRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property oobCode
+    @brief The oobCode sent in the request.
+ */
+@property(nonatomic, copy, readonly) NSString *oobCode;
+
+/** @property updatedPassword
+    @brief The new password sent in the request.
+ */
+@property(nonatomic, copy, readonly) NSString *updatedPassword;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithOobCode:newPassword:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithOobCode:newPassword:requestConfiguration:
+    @brief Designated initializer.
+    @param oobCode The OOB Code.
+    @param newPassword The new password.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithOobCode:(NSString *)oobCode
+                             newPassword:(nullable NSString *)newPassword
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.m
new file mode 100644
index 0000000..7579b29
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.m	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kResetPasswordEndpoint
+    @brief The "resetPassword" endpoint.
+ */
+static NSString *const kResetPasswordEndpoint = @"resetPassword";
+
+/** @var kOOBCodeKey
+    @brief The "resetPassword" key.
+ */
+static NSString *const kOOBCodeKey = @"oobCode";
+
+/** @var kCurrentPasswordKey
+    @brief The "newPassword" key.
+ */
+static NSString *const kCurrentPasswordKey = @"newPassword";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRResetPasswordRequest
+
+- (nullable instancetype)initWithOobCode:(NSString *)oobCode
+                             newPassword:(nullable NSString *)newPassword
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kResetPasswordEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _oobCode = oobCode;
+    _updatedPassword = newPassword;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  postBody[kOOBCodeKey] = _oobCode;
+  if (_updatedPassword) {
+    postBody[kCurrentPasswordKey] = _updatedPassword;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h
new file mode 100644
index 0000000..3e8c560
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthResetPasswordResponse
+    @brief Represents the response from the resetPassword endpoint.
+    @remarks Possible error codes:
+       - FIRAuthErrorCodeWeakPassword
+       - FIRAuthErrorCodeUserDisabled
+       - FIRAuthErrorCodeOperationNotAllowed
+       - FIRAuthErrorCodeExpiredActionCode
+       - FIRAuthErrorCodeInvalidActionCode
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/resetPassword
+ */
+@interface FIRResetPasswordResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property email
+    @brief The email address corresponding to the reset password request.
+ */
+@property(nonatomic, strong, readonly) NSString *email;
+
+/** @property verifiedEmail
+    @brief The verified email returned from the backend.
+ */
+@property(nonatomic, strong, readonly) NSString *verifiedEmail;
+
+/** @property requestType
+    @brief The tpye of request as returned by the backend.
+ */
+@property(nonatomic, strong, readonly) NSString *requestType;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.m
new file mode 100644
index 0000000..5ad1e36
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.m	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRResetPasswordResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRResetPasswordResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _email = [dictionary[@"email"] copy];
+  _requestType = [dictionary[@"requestType"] copy];
+  _verifiedEmail = [dictionary[@"newEmail"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h
new file mode 100644
index 0000000..c17a237
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h	
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @enum FIRSecureTokenRequestGrantType
+    @brief Represents the possible grant types for a token request.
+ */
+typedef NS_ENUM(NSUInteger, FIRSecureTokenRequestGrantType) {
+  /** @var FIRSecureTokenRequestGrantTypeAuthorizationCode
+      @brief Indicates an authorization code request.
+      @remarks Exchanges a Gitkit "ID Token" for an STS Access Token and Refresh Token.
+   */
+  FIRSecureTokenRequestGrantTypeAuthorizationCode,
+
+  /** @var FIRSecureTokenRequestGrantTypeRefreshToken
+      @brief Indicates an refresh token request.
+      @remarks Uses an existing Refresh Token to create a new Access Token.
+   */
+  FIRSecureTokenRequestGrantTypeRefreshToken,
+};
+
+/** @class FIRSecureTokenRequest
+    @brief Represents the parameters for the token endpoint.
+ */
+@interface FIRSecureTokenRequest : NSObject <FIRAuthRPCRequest>
+
+/** @property grantType
+    @brief The type of grant requested.
+    @see FIRSecureTokenRequestGrantType
+ */
+@property(nonatomic, assign, readonly) FIRSecureTokenRequestGrantType grantType;
+
+/** @property scope
+    @brief The scopes requested (a comma-delimited list of scope strings.)
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *scope;
+
+/** @property refreshToken
+    @brief The client's refresh token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+/** @property code
+    @brief The client's authorization code (legacy Gitkit "ID Token").
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *code;
+
+/** @property APIKey
+    @brief The client's API Key.
+ */
+@property(nonatomic, copy, readonly) NSString *APIKey;
+
+/** @fn authCodeRequestWithCode:
+    @brief Creates an authorization code request with the given code (legacy Gitkit "ID Token").
+    @param code The authorization code (legacy Gitkit "ID Token").
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return An authorization request.
+ */
++ (FIRSecureTokenRequest *)authCodeRequestWithCode:(NSString *)code
+                              requestConfiguration:
+                                  (FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn refreshRequestWithCode:
+    @brief Creates a refresh request with the given refresh token.
+    @param refreshToken The refresh token.
+    @param requestConfiguration An object containing configurations to be added to the request.
+    @return A refresh request.
+ */
++ (FIRSecureTokenRequest *)refreshRequestWithRefreshToken:(NSString *)refreshToken
+                                     requestConfiguration:
+                                         (FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn init
+    @brief Please use initWithGrantType:scope:refreshToken:code:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithGrantType:scope:refreshToken:code:APIKey:
+    @brief Designated initializer.
+    @param grantType The type of request.
+    @param scope The scopes requested.
+    @param refreshToken The client's refresh token (for refresh requests.)
+    @param code The client's authorization code (Gitkit ID Token) (for authorization code requests.)
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithGrantType:(FIRSecureTokenRequestGrantType)grantType
+                                     scope:(nullable NSString *)scope
+                              refreshToken:(nullable NSString *)refreshToken
+                                      code:(nullable NSString *)code
+                      requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.m
new file mode 100644
index 0000000..da9470f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.m	
@@ -0,0 +1,177 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h"
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kFIRSecureTokenServiceGetTokenURLFormat
+    @brief The format of the secure token service URLs. Requires string format substitution with
+        the client's API Key.
+ */
+static NSString *const kFIRSecureTokenServiceGetTokenURLFormat = @"https://%@/v1/token?key=%@";
+
+/** @var kFIREmulatorURLFormat
+    @brief The format of the emulated secure token service URLs. Requires string format substitution
+   with the emulator host, the gAPIHost, and the client's API Key.
+ */
+static NSString *const kFIREmulatorURLFormat = @"http://%@/%@/v1/token?key=%@";
+
+/** @var kFIRSecureTokenServiceGrantTypeRefreshToken
+    @brief The string value of the @c FIRSecureTokenRequestGrantTypeRefreshToken request type.
+ */
+static NSString *const kFIRSecureTokenServiceGrantTypeRefreshToken = @"refresh_token";
+
+/** @var kFIRSecureTokenServiceGrantTypeAuthorizationCode
+    @brief The string value of the @c FIRSecureTokenRequestGrantTypeAuthorizationCode request type.
+ */
+static NSString *const kFIRSecureTokenServiceGrantTypeAuthorizationCode = @"authorization_code";
+
+/** @var kGrantTypeKey
+    @brief The key for the "grantType" parameter in the request.
+ */
+static NSString *const kGrantTypeKey = @"grantType";
+
+/** @var kScopeKey
+    @brief The key for the "scope" parameter in the request.
+ */
+static NSString *const kScopeKey = @"scope";
+
+/** @var kRefreshTokenKey
+    @brief The key for the "refreshToken" parameter in the request.
+ */
+static NSString *const kRefreshTokenKey = @"refreshToken";
+
+/** @var kCodeKey
+    @brief The key for the "code" parameter in the request.
+ */
+static NSString *const kCodeKey = @"code";
+
+/** @var gAPIHost
+ @brief Host for server API calls.
+ */
+static NSString *gAPIHost = @"securetoken.googleapis.com";
+
+@implementation FIRSecureTokenRequest {
+  /** @var _requestConfiguration
+      @brief Contains configuration relevant to the request.
+   */
+  FIRAuthRequestConfiguration *_requestConfiguration;
+}
+
++ (FIRSecureTokenRequest *)authCodeRequestWithCode:(NSString *)code
+                              requestConfiguration:
+                                  (FIRAuthRequestConfiguration *)requestConfiguration {
+  return [[self alloc] initWithGrantType:FIRSecureTokenRequestGrantTypeAuthorizationCode
+                                   scope:nil
+                            refreshToken:nil
+                                    code:code
+                    requestConfiguration:requestConfiguration];
+}
+
++ (FIRSecureTokenRequest *)refreshRequestWithRefreshToken:(NSString *)refreshToken
+                                     requestConfiguration:
+                                         (FIRAuthRequestConfiguration *)requestConfiguration {
+  return [[self alloc] initWithGrantType:FIRSecureTokenRequestGrantTypeRefreshToken
+                                   scope:nil
+                            refreshToken:refreshToken
+                                    code:nil
+                    requestConfiguration:requestConfiguration];
+}
+
+/** @fn grantTypeStringWithGrantType:
+    @brief Converts a @c FIRSecureTokenRequestGrantType to it's @c NSString equivilent.
+ */
++ (NSString *)grantTypeStringWithGrantType:(FIRSecureTokenRequestGrantType)grantType {
+  switch (grantType) {
+    case FIRSecureTokenRequestGrantTypeAuthorizationCode:
+      return kFIRSecureTokenServiceGrantTypeAuthorizationCode;
+    case FIRSecureTokenRequestGrantTypeRefreshToken:
+      return kFIRSecureTokenServiceGrantTypeRefreshToken;
+      // No Default case so we will notice if new grant types are added to the enum.
+  }
+}
+
+- (nullable instancetype)initWithGrantType:(FIRSecureTokenRequestGrantType)grantType
+                                     scope:(nullable NSString *)scope
+                              refreshToken:(nullable NSString *)refreshToken
+                                      code:(nullable NSString *)code
+                      requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super init];
+  if (self) {
+    _grantType = grantType;
+    _scope = [scope copy];
+    _refreshToken = [refreshToken copy];
+    _code = [code copy];
+    _APIKey = [requestConfiguration.APIKey copy];
+    _requestConfiguration = requestConfiguration;
+  }
+  return self;
+}
+
+- (FIRAuthRequestConfiguration *)requestConfiguration {
+  return _requestConfiguration;
+}
+
+- (NSURL *)requestURL {
+  NSString *URLString;
+
+  NSString *emulatorHostAndPort = _requestConfiguration.emulatorHostAndPort;
+  if (emulatorHostAndPort) {
+    URLString =
+        [NSString stringWithFormat:kFIREmulatorURLFormat, emulatorHostAndPort, gAPIHost, _APIKey];
+  } else {
+    URLString =
+        [NSString stringWithFormat:kFIRSecureTokenServiceGetTokenURLFormat, gAPIHost, _APIKey];
+  }
+  NSURL *URL = [NSURL URLWithString:URLString];
+  return URL;
+}
+
+- (BOOL)containsPostBody {
+  return YES;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody =
+      [@{kGrantTypeKey : [[self class] grantTypeStringWithGrantType:_grantType]} mutableCopy];
+  if (_scope) {
+    postBody[kScopeKey] = _scope;
+  }
+  if (_refreshToken) {
+    postBody[kRefreshTokenKey] = _refreshToken;
+  }
+  if (_code) {
+    postBody[kCodeKey] = _code;
+  }
+  return [postBody copy];
+}
+
+#pragma mark - Internal API for development
+
++ (NSString *)host {
+  return gAPIHost;
+}
+
++ (void)setHost:(NSString *)host {
+  gAPIHost = host;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h
new file mode 100644
index 0000000..a45f9ad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRSecureTokenResponse
+    @brief Represents the response from the token endpoint.
+ */
+@interface FIRSecureTokenResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token. (Possibly an updated one for refresh requests.)
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+/** @property accessToken
+    @brief The new access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *accessToken;
+
+/** @property IDToken
+    @brief The new ID Token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.m
new file mode 100644
index 0000000..5d4c00a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.m	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h"
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kExpiresInKey
+    @brief The key for the number of seconds till the access token expires.
+ */
+static NSString *const kExpiresInKey = @"expires_in";
+
+/** @var kRefreshTokenKey
+    @brief The key for the refresh token.
+ */
+static NSString *const kRefreshTokenKey = @"refresh_token";
+
+/** @var kAccessTokenKey
+    @brief The key for the access token.
+ */
+static NSString *const kAccessTokenKey = @"access_token";
+
+/** @var kIDTokenKey
+    @brief The key for the "id_token" value in the response.
+ */
+static NSString *const kIDTokenKey = @"id_token";
+
+@implementation FIRSecureTokenResponse
+
+- (nullable NSString *)expectedKind {
+  return nil;
+}
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _refreshToken = dictionary[kRefreshTokenKey];
+  _accessToken = dictionary[kAccessTokenKey];
+  _IDToken = dictionary[kIDTokenKey];
+  if (!_accessToken.length) {
+    if (error) {
+      *error = [FIRAuthErrorUtils unexpectedResponseWithDeserializedResponse:dictionary];
+    }
+    return NO;
+  }
+  id expiresIn = dictionary[kExpiresInKey];
+  if (![expiresIn isKindOfClass:[NSString class]]) {
+    if (error) {
+      *error = [FIRAuthErrorUtils unexpectedResponseWithDeserializedResponse:dictionary];
+    }
+    return NO;
+  }
+
+  _approximateExpirationDate = [NSDate dateWithTimeIntervalSinceNow:[expiresIn doubleValue]];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h
new file mode 100644
index 0000000..974eb6a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+@class FIRAuthAppCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSendVerificationCodeRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property phoneNumber
+    @brief The phone number to which the verification code should be sent.
+ */
+@property(nonatomic, strong, readonly) NSString *phoneNumber;
+
+/** @property appCredential
+    @brief The credential to prove the identity of the app in order to send the verification code.
+ */
+@property(nonatomic, strong, readonly, nullable) FIRAuthAppCredential *appCredential;
+
+/** @property reCAPTCHAToken
+    @brief The reCAPTCHA token to prove the identity of the app in order to send the verification
+        code.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *reCAPTCHAToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithPhoneNumber:appCredentials:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithPhoneNumber:appCredentials:requestConfiguration:
+    @brief Designated initializer.
+    @param phoneNumber The phone number to which the verification code is to be sent.
+    @param appCredential The credential that proves the identity of the app.
+    @param reCAPTCHAToken The reCAPTCHA token that proves the identity of the app.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithPhoneNumber:(NSString *)phoneNumber
+                               appCredential:(nullable FIRAuthAppCredential *)appCredential
+                              reCAPTCHAToken:(nullable NSString *)reCAPTCHAToken
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.m
new file mode 100644
index 0000000..15e2681
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeRequest.h"
+
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kSendVerificationCodeEndPoint
+    @brief The "sendVerificationCodeEnd" endpoint.
+ */
+static NSString *const kSendVerificationCodeEndPoint = @"sendVerificationCode";
+
+/** @var kPhoneNumberKey
+    @brief The key for the Phone Number parameter in the request.
+ */
+static NSString *const kPhoneNumberKey = @"phoneNumber";
+
+/** @var kReceiptKey
+    @brief The key for the receipt parameter in the request.
+ */
+static NSString *const kReceiptKey = @"iosReceipt";
+
+/** @var kSecretKey
+    @brief The key for the Secret parameter in the request.
+ */
+static NSString *const kSecretKey = @"iosSecret";
+
+/** @var kreCAPTCHATokenKey
+    @brief The key for the reCAPTCHAToken parameter in the request.
+ */
+static NSString *const kreCAPTCHATokenKey = @"recaptchaToken";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRSendVerificationCodeRequest {
+}
+
+- (nullable instancetype)initWithPhoneNumber:(NSString *)phoneNumber
+                               appCredential:(nullable FIRAuthAppCredential *)appCredential
+                              reCAPTCHAToken:(nullable NSString *)reCAPTCHAToken
+                        requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kSendVerificationCodeEndPoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _phoneNumber = [phoneNumber copy];
+    _appCredential = appCredential;
+    _reCAPTCHAToken = [reCAPTCHAToken copy];
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_phoneNumber) {
+    postBody[kPhoneNumberKey] = _phoneNumber;
+  }
+  if (_appCredential.receipt) {
+    postBody[kReceiptKey] = _appCredential.receipt;
+  }
+  if (_appCredential.secret) {
+    postBody[kSecretKey] = _appCredential.secret;
+  }
+  if (_reCAPTCHAToken) {
+    postBody[kreCAPTCHATokenKey] = _reCAPTCHAToken;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h
new file mode 100644
index 0000000..605f3f4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSendVerificationCodeResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property verificationID
+    @brief Encrypted session information returned by the backend.
+ */
+@property(nonatomic, readonly) NSString *verificationID;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.m
new file mode 100644
index 0000000..6e8598c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.m	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSendVerificationCodeResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRSendVerificationCodeResponse
+
+// TODO: remove when resolving b/37169084 .
+- (nullable NSString *)expectedKind {
+  return nil;
+}
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _verificationID = [dictionary[@"sessionInfo"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h
new file mode 100644
index 0000000..5ba22ba
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h	
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+@class FIRGetAccountInfoResponse;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var FIRSetAccountInfoUserAttributeEmail
+    @brief Constant for email attribute used in "deleteAttributes".
+ */
+extern NSString *const FIRSetAccountInfoUserAttributeEmail;
+
+/** @var FIRSetAccountInfoUserAttributeDisplayName
+    @brief Constant for displayName attribute used in "deleteAttributes".
+ */
+extern NSString *const FIRSetAccountInfoUserAttributeDisplayName;
+
+/** @var FIRSetAccountInfoUserAttributeProvider
+    @brief Constant for provider attribute used in "deleteAttributes".
+ */
+extern NSString *const FIRSetAccountInfoUserAttributeProvider;
+
+/** @var FIRSetAccountInfoUserAttributePhotoURL
+    @brief Constant for photoURL attribute used in "deleteAttributes".
+ */
+extern NSString *const FIRSetAccountInfoUserAttributePhotoURL;
+
+/** @var FIRSetAccountInfoUserAttributePassword
+    @brief Constant for password attribute used in "deleteAttributes".
+ */
+extern NSString *const FIRSetAccountInfoUserAttributePassword;
+
+/** @class FIRSetAccountInfoRequest
+    @brief Represents the parameters for the setAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/setAccountInfo
+ */
+@interface FIRSetAccountInfoRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property accessToken
+    @brief The STS Access Token of the authenticated user.
+ */
+@property(nonatomic, copy, nullable) NSString *accessToken;
+
+/** @property displayName
+    @brief The name of the user.
+ */
+@property(nonatomic, copy, nullable) NSString *displayName;
+
+/** @property localID
+    @brief The local ID of the user.
+ */
+@property(nonatomic, copy, nullable) NSString *localID;
+
+/** @property email
+    @brief The email of the user.
+ */
+@property(nonatomic, copy, nullable) NSString *email;
+
+/** @property photoURL
+    @brief The photoURL of the user.
+ */
+@property(nonatomic, copy, nullable) NSURL *photoURL;
+
+/** @property password
+    @brief The new password of the user.
+ */
+@property(nonatomic, copy, nullable) NSString *password;
+
+/** @property providers
+    @brief The associated identity providers of the user.
+ */
+@property(nonatomic, copy, nullable) NSArray<NSString *> *providers;
+
+/** @property OOBCode
+    @brief The out-of-band code of the change email request.
+ */
+@property(nonatomic, copy, nullable) NSString *OOBCode;
+
+/** @property emailVerified
+    @brief Whether to mark the email as verified or not.
+ */
+@property(nonatomic, assign) BOOL emailVerified;
+
+/** @property upgradeToFederatedLogin
+    @brief Whether to mark the user to upgrade to federated login.
+ */
+@property(nonatomic, assign) BOOL upgradeToFederatedLogin;
+
+/** @property captchaChallenge
+    @brief The captcha challenge.
+ */
+@property(nonatomic, copy, nullable) NSString *captchaChallenge;
+
+/** @property captchaResponse
+    @brief Response to the captcha.
+ */
+@property(nonatomic, copy, nullable) NSString *captchaResponse;
+
+/** @property deleteAttributes
+    @brief The list of user attributes to delete.
+    @remarks Every element of the list must be one of the predefined constant starts with
+        "FIRSetAccountInfoUserAttribute".
+ */
+@property(nonatomic, copy, nullable) NSArray<NSString *> *deleteAttributes;
+
+/** @property deleteProviders
+    @brief The list of identity providers to delete.
+ */
+@property(nonatomic, copy, nullable) NSArray<NSString *> *deleteProviders;
+
+/** @property returnSecureToken
+    @brief Whether the response should return access token and refresh token directly.
+    @remarks The default value is @c YES .
+ */
+@property(nonatomic, assign) BOOL returnSecureToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithAPIKey:email:password:displayName:requestConfiguration instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithRequestConfiguration:
+    @brief Designated initializer.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.m
new file mode 100644
index 0000000..6e7291e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.m	
@@ -0,0 +1,187 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+NSString *const FIRSetAccountInfoUserAttributeEmail = @"EMAIL";
+
+NSString *const FIRSetAccountInfoUserAttributeDisplayName = @"DISPLAY_NAME";
+
+NSString *const FIRSetAccountInfoUserAttributeProvider = @"PROVIDER";
+
+NSString *const FIRSetAccountInfoUserAttributePhotoURL = @"PHOTO_URL";
+
+NSString *const FIRSetAccountInfoUserAttributePassword = @"PASSWORD";
+
+/** @var kCreateAuthURIEndpoint
+    @brief The "setAccountInfo" endpoint.
+ */
+static NSString *const kSetAccountInfoEndpoint = @"setAccountInfo";
+
+/** @var kIDTokenKey
+    @brief The key for the "idToken" value in the request. This is actually the STS Access Token,
+        despite it's confusing (backwards compatiable) parameter name.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kDisplayNameKey
+    @brief The key for the "displayName" value in the request.
+ */
+static NSString *const kDisplayNameKey = @"displayName";
+
+/** @var kLocalIDKey
+    @brief The key for the "localID" value in the request.
+ */
+static NSString *const kLocalIDKey = @"localId";
+
+/** @var kEmailKey
+    @brief The key for the "email" value in the request.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kPasswordKey
+    @brief The key for the "password" value in the request.
+ */
+static NSString *const kPasswordKey = @"password";
+
+/** @var kPhotoURLKey
+    @brief The key for the "photoURL" value in the request.
+ */
+static NSString *const kPhotoURLKey = @"photoUrl";
+
+/** @var kProvidersKey
+    @brief The key for the "providers" value in the request.
+ */
+static NSString *const kProvidersKey = @"provider";
+
+/** @var kOOBCodeKey
+    @brief The key for the "OOBCode" value in the request.
+ */
+static NSString *const kOOBCodeKey = @"oobCode";
+
+/** @var kEmailVerifiedKey
+    @brief The key for the "emailVerified" value in the request.
+ */
+static NSString *const kEmailVerifiedKey = @"emailVerified";
+
+/** @var kUpgradeToFederatedLoginKey
+    @brief The key for the "upgradeToFederatedLogin" value in the request.
+ */
+static NSString *const kUpgradeToFederatedLoginKey = @"upgradeToFederatedLogin";
+
+/** @var kCaptchaChallengeKey
+    @brief The key for the "captchaChallenge" value in the request.
+ */
+static NSString *const kCaptchaChallengeKey = @"captchaChallenge";
+
+/** @var kCaptchaResponseKey
+    @brief The key for the "captchaResponse" value in the request.
+ */
+static NSString *const kCaptchaResponseKey = @"captchaResponse";
+
+/** @var kDeleteAttributesKey
+    @brief The key for the "deleteAttribute" value in the request.
+ */
+static NSString *const kDeleteAttributesKey = @"deleteAttribute";
+
+/** @var kDeleteProvidersKey
+    @brief The key for the "deleteProvider" value in the request.
+ */
+static NSString *const kDeleteProvidersKey = @"deleteProvider";
+
+/** @var kReturnSecureTokenKey
+    @brief The key for the "returnSecureToken" value in the request.
+ */
+static NSString *const kReturnSecureTokenKey = @"returnSecureToken";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRSetAccountInfoRequest
+
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kSetAccountInfoEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _returnSecureToken = YES;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_accessToken) {
+    postBody[kIDTokenKey] = _accessToken;
+  }
+  if (_displayName) {
+    postBody[kDisplayNameKey] = _displayName;
+  }
+  if (_localID) {
+    postBody[kLocalIDKey] = _localID;
+  }
+  if (_email) {
+    postBody[kEmailKey] = _email;
+  }
+  if (_password) {
+    postBody[kPasswordKey] = _password;
+  }
+  if (_photoURL) {
+    postBody[kPhotoURLKey] = _photoURL.absoluteString;
+  }
+  if (_providers) {
+    postBody[kProvidersKey] = _providers;
+  }
+  if (_OOBCode) {
+    postBody[kOOBCodeKey] = _OOBCode;
+  }
+  if (_emailVerified) {
+    postBody[kEmailVerifiedKey] = @YES;
+  }
+  if (_upgradeToFederatedLogin) {
+    postBody[kUpgradeToFederatedLoginKey] = @YES;
+  }
+  if (_captchaChallenge) {
+    postBody[kCaptchaChallengeKey] = _captchaChallenge;
+  }
+  if (_captchaResponse) {
+    postBody[kCaptchaResponseKey] = _captchaResponse;
+  }
+  if (_deleteAttributes) {
+    postBody[kDeleteAttributesKey] = _deleteAttributes;
+  }
+  if (_deleteProviders) {
+    postBody[kDeleteProvidersKey] = _deleteProviders;
+  }
+  if (_returnSecureToken) {
+    postBody[kReturnSecureTokenKey] = @YES;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h
new file mode 100644
index 0000000..9e30930
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h	
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRSetAccountInfoResponseProviderUserInfo
+    @brief Represents the provider user info part of the response from the setAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/setAccountInfo
+ */
+@interface FIRSetAccountInfoResponseProviderUserInfo : NSObject
+
+/** @property providerID
+    @brief The ID of the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *providerID;
+
+/** @property displayName
+    @brief The user's display name at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property photoURL
+    @brief The user's photo URL at the identity provider.
+ */
+@property(nonatomic, strong, readonly, nullable) NSURL *photoURL;
+
+/** @fn init
+    @brief Please use initWithDictionary:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithAPIKey:
+    @brief Designated initializer.
+    @param dictionary The provider user info data from endpoint.
+ */
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** @class FIRSetAccountInfoResponse
+    @brief Represents the response from the setAccountInfo endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/setAccountInfo
+ */
+@interface FIRSetAccountInfoResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property email
+    @brief The email or the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property displayName
+    @brief The display name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property providerUserInfo
+    @brief The user's profiles at the associated identity providers.
+ */
+@property(nonatomic, strong, readonly, nullable)
+    NSArray<FIRSetAccountInfoResponseProviderUserInfo *> *providerUserInfo;
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.m
new file mode 100644
index 0000000..138fba3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.m	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRSetAccountInfoResponseProviderUserInfo
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    _providerID = [dictionary[@"providerId"] copy];
+    _displayName = [dictionary[@"displayName"] copy];
+    NSString *photoURL = dictionary[@"photoUrl"];
+    if (photoURL) {
+      _photoURL = [NSURL URLWithString:photoURL];
+    }
+  }
+  return self;
+}
+
+@end
+
+@implementation FIRSetAccountInfoResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _email = [dictionary[@"email"] copy];
+  _displayName = [dictionary[@"displayName"] copy];
+  _IDToken = [dictionary[@"idToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  NSArray<NSDictionary *> *providerUserInfoData = dictionary[@"providerUserInfo"];
+  if (providerUserInfoData) {
+    NSMutableArray<FIRSetAccountInfoResponseProviderUserInfo *> *providerUserInfoArray =
+        [NSMutableArray arrayWithCapacity:providerUserInfoData.count];
+    for (NSDictionary *dictionary in providerUserInfoData) {
+      [providerUserInfoArray addObject:[[FIRSetAccountInfoResponseProviderUserInfo alloc]
+                                           initWithDictionary:dictionary]];
+    }
+    _providerUserInfo = [providerUserInfoArray copy];
+  }
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h
new file mode 100644
index 0000000..781d63a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRSignInWithGameCenterRequest
+    @brief The request to sign in with Game Center account
+ */
+@interface FIRSignInWithGameCenterRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property playerID
+    @brief The playerID to verify.
+ */
+@property(nonatomic, copy) NSString *playerID;
+
+/** @property publicKeyURL
+    @brief The URL for the public encryption key.
+ */
+@property(nonatomic, copy) NSURL *publicKeyURL;
+
+/** @property signature
+    @brief The verification signature data generated by Game Center.
+ */
+@property(nonatomic, copy) NSData *signature;
+
+/** @property salt
+    @brief A random strong used to compute the hash and keep it randomized.
+ */
+@property(nonatomic, copy) NSData *salt;
+
+/** @property timestamp
+    @brief The date and time that the signature was created.
+ */
+@property(nonatomic, assign) uint64_t timestamp;
+
+/** @property accessToken
+    @brief The STS Access Token for the authenticated user, only needed for linking the user.
+ */
+@property(nonatomic, copy, nullable) NSString *accessToken;
+
+/** @property displayName
+    @brief The display name of the local Game Center player.
+ */
+@property(nonatomic, copy, nullable) NSString *displayName;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithPlayerID:publicKeyURL:signature:salt:timestamp:requestConfiguration:.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithPlayerID:publicKeyURL:signature:salt:timestamp:displayName:requestConfiguration:
+    @brief Designated initializer.
+    @param playerID The ID of the Game Center player.
+    @param publicKeyURL The URL for the public encryption key.
+    @param signature The verification signature generated.
+    @param salt A random string used to compute the hash and keep it randomized.
+    @param timestamp The date and time that the signature was created.
+    @param displayName The display name of the Game Center player.
+ */
+- (nullable instancetype)initWithPlayerID:(NSString *)playerID
+                             publicKeyURL:(NSURL *)publicKeyURL
+                                signature:(NSData *)signature
+                                     salt:(NSData *)salt
+                                timestamp:(uint64_t)timestamp
+                              displayName:(NSString *)displayName
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.m
new file mode 100644
index 0000000..864b969
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.m	
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h"
+
+#import "FirebaseAuth/Sources/Utilities/NSData+FIRBase64.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kSignInWithGameCenterEndPoint
+    @brief The "SignInWithGameCenter" endpoint.
+ */
+static NSString *const kSignInWithGameCenterEndPoint = @"signInWithGameCenter";
+
+@implementation FIRSignInWithGameCenterRequest
+
+- (nullable instancetype)initWithPlayerID:(NSString *)playerID
+                             publicKeyURL:(NSURL *)publicKeyURL
+                                signature:(NSData *)signature
+                                     salt:(NSData *)salt
+                                timestamp:(uint64_t)timestamp
+                              displayName:(NSString *)displayName
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kSignInWithGameCenterEndPoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _playerID = playerID;
+    _publicKeyURL = [publicKeyURL copy];
+    _signature = [signature copy];
+    _salt = [salt copy];
+    _timestamp = timestamp;
+    _displayName = displayName;
+  }
+  return self;
+}
+
+#pragma mark - FIRAuthRPCRequest
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_playerID) {
+    postBody[@"playerId"] = _playerID;
+  }
+  if (_publicKeyURL) {
+    postBody[@"publicKeyUrl"] = _publicKeyURL.absoluteString;
+  }
+  if (_signature) {
+    postBody[@"signature"] = [_signature fir_base64URLEncodedStringWithOptions:0];
+  }
+  if (_salt) {
+    postBody[@"salt"] = [_salt fir_base64URLEncodedStringWithOptions:0];
+  }
+  if (_timestamp != 0) {
+    postBody[@"timestamp"] = [NSNumber numberWithUnsignedLongLong:_timestamp];
+  }
+  if (_accessToken) {
+    postBody[@"idToken"] = _accessToken;
+  }
+  if (_displayName) {
+    postBody[@"displayName"] = _displayName;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h
new file mode 100644
index 0000000..ee07b3e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSignInWithGameCenterResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property IDToken
+    @breif Either an authorization code suitable for performing an STS token exchange, or the access
+    token from Secure Token Service, depending on whether @c returnSecureToken is set on the
+    request.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+/** @property refreshToken
+    @breif @breif The refresh token from Secure Token Service.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+/** @property localID
+    @breif @breif The Firebase Auth user ID.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *localID;
+
+/** @property playerID
+    @breif @breif The verified player ID.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *playerID;
+
+/** @property approximateExpirationDate
+    @breif The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property isNewUser
+    @breif Flag indicating that the user signing in is a new user and not a returning user.
+ */
+@property(nonatomic, assign) BOOL isNewUser;
+
+/** @property displayName
+    @breif The user's Game Center display name.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *displayName;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.m
new file mode 100644
index 0000000..ebad315
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.m	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRSignInWithGameCenterResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _localID = [dictionary[@"localId"] copy];
+  _approximateExpirationDate = nil;
+  if ([dictionary[@"expiresIn"] isKindOfClass:[NSString class]]) {
+    _approximateExpirationDate =
+        [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] integerValue]];
+  }
+  _playerID = [dictionary[@"playerId"] copy];
+  _isNewUser = [dictionary[@"isNewUser"] boolValue];
+  _displayName = [dictionary[@"displayName"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h
new file mode 100644
index 0000000..070290d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSignUpNewUserRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property email
+    @brief The email of the user.
+ */
+@property(nonatomic, copy, nullable) NSString *email;
+
+/** @property password
+    @brief The password inputed by the user.
+ */
+@property(nonatomic, copy, nullable) NSString *password;
+
+/** @property displayName
+    @brief The password inputed by the user.
+ */
+@property(nonatomic, copy, nullable) NSString *displayName;
+
+/** @property returnSecureToken
+    @brief Whether the response should return access token and refresh token directly.
+    @remarks The default value is @c YES .
+ */
+@property(nonatomic, assign) BOOL returnSecureToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithAPIKey:email:password:displayName:requestConfiguration instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief initializer for anonymous sign-in.
+ */
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration;
+
+/** @fn initWithAPIKey:email:password:displayName:requestConfiguration
+    @brief Designated initializer.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithEmail:(nullable NSString *)email
+                              password:(nullable NSString *)password
+                           displayName:(nullable NSString *)displayName
+                  requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.m
new file mode 100644
index 0000000..198e450
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.m	
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kSignupNewUserEndpoint
+    @brief The "SingupNewUserEndpoint" endpoint.
+ */
+static NSString *const kSignupNewUserEndpoint = @"signupNewUser";
+
+/** @var kEmailKey
+    @brief The key for the "email" value in the request.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kPasswordKey
+    @brief The key for the "password" value in the request.
+ */
+static NSString *const kPasswordKey = @"password";
+
+/** @var kDisplayNameKey
+    @brief The key for the "kDisplayName" value in the request.
+ */
+static NSString *const kDisplayNameKey = @"displayName";
+
+/** @var kReturnSecureTokenKey
+    @brief The key for the "returnSecureToken" value in the request.
+ */
+static NSString *const kReturnSecureTokenKey = @"returnSecureToken";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRSignUpNewUserRequest
+
+- (nullable instancetype)initWithEmail:(nullable NSString *)email
+                              password:(nullable NSString *)password
+                           displayName:(nullable NSString *)displayName
+                  requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kSignupNewUserEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _email = [email copy];
+    _password = [password copy];
+    _displayName = [displayName copy];
+    _returnSecureToken = YES;
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithRequestConfiguration:
+    (FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [self initWithEmail:nil
+                    password:nil
+                 displayName:nil
+        requestConfiguration:requestConfiguration];
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_email) {
+    postBody[kEmailKey] = _email;
+  }
+  if (_password) {
+    postBody[kPasswordKey] = _password;
+  }
+  if (_displayName) {
+    postBody[kDisplayNameKey] = _displayName;
+  }
+  if (_returnSecureToken) {
+    postBody[kReturnSecureTokenKey] = @YES;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h
new file mode 100644
index 0000000..f2e74f6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSignUpNewUserResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.m
new file mode 100644
index 0000000..bdfa6d5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.m	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignUpNewUserResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRSignUpNewUserResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h
new file mode 100644
index 0000000..0a1aa37
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyAssertionRequest
+    @brief Represents the parameters for the verifyAssertion endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/verifyAssertion
+ */
+@interface FIRVerifyAssertionRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property requestURI
+    @brief The URI to which the IDP redirects the user back. It may contain federated login result
+        params added by the IDP.
+ */
+@property(nonatomic, copy, nullable) NSString *requestURI;
+
+/** @property pendingToken
+    @brief The Firebase ID Token for the IDP pending to be confirmed by the user.
+ */
+@property(nonatomic, copy, nullable) NSString *pendingToken;
+
+/** @property accessToken
+    @brief The STS Access Token for the authenticated user, only needed for linking the user.
+ */
+@property(nonatomic, copy, nullable) NSString *accessToken;
+
+/** @property returnSecureToken
+    @brief Whether the response should return access token and refresh token directly.
+    @remarks The default value is @c YES .
+ */
+@property(nonatomic, assign) BOOL returnSecureToken;
+
+#pragma mark - Components of "postBody"
+
+/** @property providerID
+    @brief The ID of the IDP whose credentials are being presented to the endpoint.
+ */
+@property(nonatomic, copy, readonly) NSString *providerID;
+
+/** @property providerAccessToken
+    @brief An access token from the IDP.
+ */
+@property(nonatomic, copy, nullable) NSString *providerAccessToken;
+
+/** @property providerIDToken
+    @brief An ID Token from the IDP.
+ */
+@property(nonatomic, copy, nullable) NSString *providerIDToken;
+
+/** @property providerRawNonce
+    @brief An raw nonce from the IDP.
+ */
+@property(nonatomic, copy, nullable) NSString *providerRawNonce;
+
+/** @property returnIDPCredential
+    @brief Whether the response should return the IDP credential directly.
+ */
+@property(nonatomic, assign) BOOL returnIDPCredential;
+
+/** @property providerOAuthTokenSecret
+    @brief A session ID used to map this request to a headful-lite flow.
+ */
+@property(nonatomic, copy, nullable) NSString *sessionID;
+
+/** @property providerOAuthTokenSecret
+    @brief An OAuth client secret from the IDP.
+ */
+@property(nonatomic, copy, nullable) NSString *providerOAuthTokenSecret;
+
+/** @property inputEmail
+    @brief The originally entered email in the UI.
+ */
+@property(nonatomic, copy, nullable) NSString *inputEmail;
+
+/** @property autoCreate
+    @brief A flag that indicates whether or not the user should be automatically created.
+ */
+@property(nonatomic, assign) BOOL autoCreate;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithProviderID:requestConfifuration instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithProviderID:requestConfifuration
+    @brief Designated initializer.
+    @param providerID The auth provider's ID.
+    @param requestConfiguration An object containing configurations to be added to the request.
+
+ */
+- (nullable instancetype)initWithProviderID:(NSString *)providerID
+                       requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.m
new file mode 100644
index 0000000..7412af8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.m	
@@ -0,0 +1,185 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kVerifyAssertionEndpoint
+    @brief The "verifyAssertion" endpoint.
+ */
+static NSString *const kVerifyAssertionEndpoint = @"verifyAssertion";
+
+/** @var kProviderIDKey
+    @brief The key for the "providerId" value in the request.
+ */
+static NSString *const kProviderIDKey = @"providerId";
+
+/** @var kProviderIDTokenKey
+    @brief The key for the "id_token" value in the request.
+ */
+static NSString *const kProviderIDTokenKey = @"id_token";
+
+/** @var kProviderNonceKey
+    @brief The key for the "nonce" value in the request.
+ */
+static NSString *const kProviderNonceKey = @"nonce";
+
+/** @var kProviderAccessTokenKey
+    @brief The key for the "access_token" value in the request.
+ */
+static NSString *const kProviderAccessTokenKey = @"access_token";
+
+/** @var kProviderOAuthTokenSecretKey
+    @brief The key for the "oauth_token_secret" value in the request.
+ */
+static NSString *const kProviderOAuthTokenSecretKey = @"oauth_token_secret";
+
+/** @var kIdentifierKey
+    @brief The key for the "identifier" value in the request.
+ */
+static NSString *const kIdentifierKey = @"identifier";
+
+/** @var kRequestURIKey
+    @brief The key for the "requestUri" value in the request.
+ */
+static NSString *const kRequestURIKey = @"requestUri";
+
+/** @var kPostBodyKey
+    @brief The key for the "postBody" value in the request.
+ */
+static NSString *const kPostBodyKey = @"postBody";
+
+/** @var kPendingTokenKey
+    @brief The key for the "pendingToken" value in the request.
+ */
+static NSString *const kPendingTokenKey = @"pendingToken";
+
+/** @var kAutoCreateKey
+    @brief The key for the "autoCreate" value in the request.
+ */
+static NSString *const kAutoCreateKey = @"autoCreate";
+
+/** @var kIDTokenKey
+    @brief The key for the "idToken" value in the request. This is actually the STS Access Token,
+        despite it's confusing (backwards compatiable) parameter name.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kReturnSecureTokenKey
+    @brief The key for the "returnSecureToken" value in the request.
+ */
+static NSString *const kReturnSecureTokenKey = @"returnSecureToken";
+
+/** @var kReturnIDPCredentialKey
+    @brief The key for the "returnIdpCredential" value in the request.
+ */
+static NSString *const kReturnIDPCredentialKey = @"returnIdpCredential";
+
+/** @var kSessionIDKey
+    @brief The key for the "sessionID" value in the request.
+ */
+static NSString *const kSessionIDKey = @"sessionId";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRVerifyAssertionRequest
+
+- (nullable instancetype)initWithProviderID:(NSString *)providerID
+                       requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyAssertionEndpoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _providerID = providerID;
+    _returnSecureToken = YES;
+    _autoCreate = YES;
+    _returnIDPCredential = YES;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSURLComponents *components = [[NSURLComponents alloc] init];
+  NSMutableArray<NSURLQueryItem *> *queryItems =
+      [@[ [NSURLQueryItem queryItemWithName:kProviderIDKey value:_providerID] ] mutableCopy];
+
+  if (_providerIDToken) {
+    [queryItems addObject:[NSURLQueryItem queryItemWithName:kProviderIDTokenKey
+                                                      value:_providerIDToken]];
+  }
+
+  if (_providerRawNonce) {
+    [queryItems addObject:[NSURLQueryItem queryItemWithName:kProviderNonceKey
+                                                      value:_providerRawNonce]];
+  }
+
+  if (_providerAccessToken) {
+    [queryItems addObject:[NSURLQueryItem queryItemWithName:kProviderAccessTokenKey
+                                                      value:_providerAccessToken]];
+  }
+
+  if (!_providerIDToken && !_providerAccessToken && !_pendingToken && !_requestURI) {
+    [NSException
+         raise:NSInvalidArgumentException
+        format:@"One of IDToken, accessToken, pendingToken, or requestURI must be supplied."];
+  }
+
+  if (_providerOAuthTokenSecret) {
+    [queryItems addObject:[NSURLQueryItem queryItemWithName:kProviderOAuthTokenSecretKey
+                                                      value:_providerOAuthTokenSecret]];
+  }
+
+  if (_inputEmail) {
+    [queryItems addObject:[NSURLQueryItem queryItemWithName:kIdentifierKey value:_inputEmail]];
+  }
+  [components setQueryItems:queryItems];
+  NSMutableDictionary *body = [@{
+    kRequestURIKey : _requestURI ?: @"http://localhost",  // Unused by server, but required
+    kPostBodyKey : [components query]
+  } mutableCopy];
+
+  if (_pendingToken) {
+    body[kPendingTokenKey] = _pendingToken;
+  }
+  if (_accessToken) {
+    body[kIDTokenKey] = _accessToken;
+  }
+  if (_returnSecureToken) {
+    body[kReturnSecureTokenKey] = @YES;
+  }
+
+  if (_returnIDPCredential) {
+    body[kReturnIDPCredentialKey] = @YES;
+  }
+
+  if (_sessionID) {
+    body[kSessionIDKey] = _sessionID;
+  }
+  if (self.tenantID) {
+    body[kTenantIDKey] = self.tenantID;
+  }
+
+  body[kAutoCreateKey] = @(_autoCreate);
+
+  return body;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h
new file mode 100644
index 0000000..d739467
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h	
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyAssertionResponse
+    @brief Represents the response from the verifyAssertion endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/verifyAssertion
+ */
+@interface FIRVerifyAssertionResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property federatedID
+    @brief The unique ID identifies the IdP account.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *federatedID;
+
+/** @property providerID
+    @brief The IdP ID. For white listed IdPs it's a short domain name e.g. google.com, aol.com,
+        live.net and yahoo.com. If the "providerId" param is set to OpenID OP identifer other than
+        the whilte listed IdPs the OP identifier is returned. If the "identifier" param is federated
+        ID in the createAuthUri request. The domain part of the federated ID is returned.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *providerID;
+
+/** @property localID
+    @brief The RP local ID if it's already been mapped to the IdP account identified by the
+        federated ID.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *localID;
+
+/** @property email
+    @brief The email returned by the IdP. NOTE: The federated login user may not own the email.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property inputEmail
+    @brief It's the identifier param in the createAuthUri request if the identifier is an email. It
+        can be used to check whether the user input email is different from the asserted email.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *inputEmail;
+
+/** @property originalEmail
+    @brief The original email stored in the mapping storage. It's returned when the federated ID is
+        associated to a different email.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *originalEmail;
+
+/** @property oauthRequestToken
+    @brief The user approved request token for the OpenID OAuth extension.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *oauthRequestToken;
+
+/** @property oauthScope
+    @brief The scope for the OpenID OAuth extension.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *oauthScope;
+
+/** @property firstName
+    @brief The first name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *firstName;
+
+/** @property lastName
+    @brief The last name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *lastName;
+
+/** @property fullName
+    @brief The full name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *fullName;
+
+/** @property nickName
+    @brief The nick name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *nickName;
+
+/** @property displayName
+    @brief The display name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+/** @property action
+    @brief The action code.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *action;
+
+/** @property language
+    @brief The language preference of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *language;
+
+/** @property timeZone
+    @brief The timezone of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *timeZone;
+
+/** @property photoURL
+    @brief The URI of the public accessible profile picture.
+ */
+@property(nonatomic, strong, readonly, nullable) NSURL *photoURL;
+
+/** @property dateOfBirth
+    @brief The birth date of the IdP account.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *dateOfBirth;
+
+/** @property context
+    @brief The opaque value used by the client to maintain context info between the authentication
+        request and the IDP callback.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *context;
+
+/** @property verifiedProvider
+    @brief When action is 'map', contains the idps which can be used for confirmation.
+ */
+@property(nonatomic, strong, readonly, nullable) NSArray<NSString *> *verifiedProvider;
+
+/** @property needConfirmation
+    @brief Whether the assertion is from a non-trusted IDP and need account linking confirmation.
+ */
+@property(nonatomic, assign) BOOL needConfirmation;
+
+/** @property emailRecycled
+    @brief It's true if the email is recycled.
+ */
+@property(nonatomic, assign) BOOL emailRecycled;
+
+/** @property emailVerified
+    @brief The value is true if the IDP is also the email provider. It means the user owns the
+        email.
+ */
+@property(nonatomic, assign) BOOL emailVerified;
+
+/** @property isNewUser
+    @brief Flag indicating that the user signing in is a new user and not a returning user.
+ */
+@property(nonatomic, assign) BOOL isNewUser;
+
+/** @property profile
+    @brief Dictionary containing the additional IdP specific information.
+ */
+@property(nonatomic, readonly, nullable) NSDictionary<NSString *, NSObject *> *profile;
+
+/** @property username
+    @brief The name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *username;
+
+/** @property oauthIDToken
+    @brief The ID token for the OpenID OAuth extension.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *oauthIDToken;
+
+/** @property oauthExpirationDate
+    @brief The approximate expiration date of the oauth access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *oauthExpirationDate;
+
+/** @property oauthAccessToken
+    @brief The access token for the OpenID OAuth extension.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *oauthAccessToken;
+
+/** @property oauthSecretToken
+    @brief The secret for the OpenID OAuth extention.
+ */
+@property(nonatomic, readonly, nullable) NSString *oauthSecretToken;
+
+/** @property pendingToken
+    @brief The pending ID Token string.
+ */
+@property(nonatomic, copy, nullable) NSString *pendingToken;
+
+@property(nonatomic, strong, readonly, nullable) NSString *MFAPendingCredential;
+
+@property(nonatomic, strong, readonly, nullable) NSArray<FIRAuthProtoMFAEnrollment *> *MFAInfo;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.m
new file mode 100644
index 0000000..6c605e7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.m	
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRVerifyAssertionResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _federatedID = [dictionary[@"federatedId"] copy];
+  _providerID = [dictionary[@"providerId"] copy];
+  _localID = [dictionary[@"localId"] copy];
+  _emailRecycled = [dictionary[@"emailRecycled"] boolValue];
+  _emailVerified = [dictionary[@"emailVerified"] boolValue];
+  _email = [dictionary[@"email"] copy];
+  _inputEmail = [dictionary[@"inputEmail"] copy];
+  _originalEmail = [dictionary[@"originalEmail"] copy];
+  _oauthRequestToken = [dictionary[@"oauthRequestToken"] copy];
+  _oauthScope = [dictionary[@"oauthScope"] copy];
+  _firstName = [dictionary[@"firstName"] copy];
+  _lastName = [dictionary[@"lastName"] copy];
+  _fullName = [dictionary[@"fullName"] copy];
+  _nickName = [dictionary[@"nickName"] copy];
+  _displayName = [dictionary[@"displayName"] copy];
+  _IDToken = [dictionary[@"idToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _isNewUser = [dictionary[@"isNewUser"] boolValue];
+  id rawUserInfo = dictionary[@"rawUserInfo"];
+  if ([rawUserInfo isKindOfClass:[NSString class]]) {
+    NSData *data = [rawUserInfo dataUsingEncoding:NSUTF8StringEncoding];
+    rawUserInfo = [NSJSONSerialization JSONObjectWithData:data
+                                                  options:NSJSONReadingMutableLeaves
+                                                    error:nil];
+  }
+  if ([rawUserInfo isKindOfClass:[NSDictionary class]]) {
+    _profile = [[NSDictionary alloc] initWithDictionary:rawUserInfo copyItems:YES];
+  }
+  _username = [dictionary[@"username"] copy];
+  _action = [dictionary[@"action"] copy];
+  _language = [dictionary[@"language"] copy];
+  _timeZone = [dictionary[@"timeZone"] copy];
+  _photoURL = dictionary[@"photoUrl"] ? [NSURL URLWithString:dictionary[@"photoUrl"]] : nil;
+  _dateOfBirth = [dictionary[@"dateOfBirth"] copy];
+  _context = [dictionary[@"context"] copy];
+  _needConfirmation = [dictionary[@"needConfirmation"] boolValue];
+  id verifiedProvider = dictionary[@"verifiedProvider"];
+  if ([verifiedProvider isKindOfClass:[NSString class]]) {
+    NSData *data = [verifiedProvider dataUsingEncoding:NSUTF8StringEncoding];
+    verifiedProvider = [NSJSONSerialization JSONObjectWithData:data
+                                                       options:NSJSONReadingMutableLeaves
+                                                         error:nil];
+  }
+  if ([verifiedProvider isKindOfClass:[NSArray class]]) {
+    _verifiedProvider = [[NSArray alloc] initWithArray:verifiedProvider copyItems:YES];
+  }
+  _oauthIDToken = [dictionary[@"oauthIdToken"] copy];
+  _oauthExpirationDate =
+      [dictionary[@"oauthExpireIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"oauthExpireIn"] doubleValue]]
+          : nil;
+  _oauthAccessToken = [dictionary[@"oauthAccessToken"] copy];
+  _oauthSecretToken = [dictionary[@"oauthTokenSecret"] copy];
+  _pendingToken = [dictionary[@"pendingToken"] copy];
+
+  if (dictionary[@"mfaInfo"] != nil) {
+    NSMutableArray<FIRAuthProtoMFAEnrollment *> *MFAInfo = [NSMutableArray array];
+    NSArray *MFAInfoDataArray = dictionary[@"mfaInfo"];
+    for (NSDictionary *MFAInfoData in MFAInfoDataArray) {
+      FIRAuthProtoMFAEnrollment *MFAEnrollment =
+          [[FIRAuthProtoMFAEnrollment alloc] initWithDictionary:MFAInfoData];
+      [MFAInfo addObject:MFAEnrollment];
+    }
+    _MFAInfo = MFAInfo;
+  }
+  _MFAPendingCredential = [dictionary[@"mfaPendingCredential"] copy];
+
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h
new file mode 100644
index 0000000..7b4d3bc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRVerifyClientRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property appToken
+    @brief The APNS device token.
+ */
+@property(nonatomic, readonly, nullable) NSString *appToken;
+
+/** @property isSandbox
+    @brief The flag that denotes if the appToken  pertains to Sandbox or Production.
+ */
+@property(nonatomic, assign, readonly) BOOL isSandbox;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithToken:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithAppToken:isSandbox:requestConfiguration:
+    @brief Designated initializer.
+    @param appToken The APNS device token.
+    @param isSandbox The flag indicating whether or not the app token provided is for Sandbox or
+        Production.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithAppToken:(nullable NSString *)appToken
+                                isSandbox:(BOOL)isSandbox
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.m
new file mode 100644
index 0000000..02e984c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.m	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kVerifyClientEndpoint
+    @brief The endpoint for the verifyClient request.
+ */
+static NSString *const kVerifyClientEndpoint = @"verifyClient";
+
+/** @var kAppTokenKey
+    @brief The key for the appToken request paramenter.
+ */
+static NSString *const kAPPTokenKey = @"appToken";
+
+/** @var kIsSandboxKey
+    @brief The key for the isSandbox request parameter
+ */
+static NSString *const kIsSandboxKey = @"isSandbox";
+
+@implementation FIRVerifyClientRequest
+
+- (nullable instancetype)initWithAppToken:(nullable NSString *)appToken
+                                isSandbox:(BOOL)isSandbox
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyClientEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _appToken = appToken;
+    _isSandbox = isSandbox;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_appToken) {
+    postBody[kAPPTokenKey] = _appToken;
+  }
+  if (_isSandbox) {
+    postBody[kIsSandboxKey] = @YES;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h
new file mode 100644
index 0000000..40e6907
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRVerifyClientResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property receipt
+    @brief Receipt that the APNS token was successfully validated with APNS.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *receipt;
+
+/** @property suggestedTimeOut
+    @brief The date after which delivery of the silent push notification is considered to have
+        failed.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *suggestedTimeOutDate;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.m
new file mode 100644
index 0000000..78d648c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.m	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyClientResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRVerifyClientResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _receipt = dictionary[@"receipt"];
+  _suggestedTimeOutDate =
+      [dictionary[@"suggestedTimeout"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"suggestedTimeout"] doubleValue]]
+          : nil;
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h
new file mode 100644
index 0000000..abea35a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h	
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyCustomTokenRequest
+    @brief Represents the parameters for the verifyCustomToken endpoint.
+ */
+@interface FIRVerifyCustomTokenRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property token
+    @brief The self-signed token from the client's BYOAuth server.
+ */
+@property(nonatomic, copy, readonly) NSString *token;
+
+/** @property returnSecureToken
+    @brief Whether the response should return access token and refresh token directly.
+    @remarks The default value is @c YES .
+ */
+@property(nonatomic, assign) BOOL returnSecureToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithToken:requestConfiguration: instead.
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithToken:requestConfiguration:
+    @brief Designated initializer.
+    @param token The self-signed token from the client's BYOAuth server.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithToken:(NSString *)token
+                  requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.m
new file mode 100644
index 0000000..a49f53f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.m	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kVerifyCustomTokenEndpoint
+    @brief The "verifyPassword" endpoint.
+ */
+static NSString *const kVerifyCustomTokenEndpoint = @"verifyCustomToken";
+
+/** @var kTokenKey
+    @brief The key for the "token" value in the request.
+ */
+static NSString *const kTokenKey = @"token";
+
+/** @var kReturnSecureTokenKey
+    @brief The key for the "returnSecureToken" value in the request.
+ */
+static NSString *const kReturnSecureTokenKey = @"returnSecureToken";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRVerifyCustomTokenRequest
+
+- (nullable instancetype)initWithToken:(NSString *)token
+                  requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyCustomTokenEndpoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _token = [token copy];
+    _returnSecureToken = YES;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *body = [@{kTokenKey : _token} mutableCopy];
+  if (_returnSecureToken) {
+    body[kReturnSecureTokenKey] = @YES;
+  }
+  if (self.tenantID) {
+    body[kTenantIDKey] = self.tenantID;
+  }
+  return body;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h
new file mode 100644
index 0000000..7484a94
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyCustomTokenResponse
+    @brief Represents the response from the verifyCustomToken endpoint.
+ */
+@interface FIRVerifyCustomTokenResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+/** @property isNewUser
+    @brief Flag indicating that the user signing in is a new user and not a returning user.
+ */
+@property(nonatomic, assign) BOOL isNewUser;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.m
new file mode 100644
index 0000000..1bbe645
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.m	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRVerifyCustomTokenResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _isNewUser = [dictionary[@"isNewUser"] boolValue];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h
new file mode 100644
index 0000000..5931578
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h	
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyPasswordRequest
+    @brief Represents the parameters for the verifyPassword endpoint.
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/verifyPassword
+ */
+@interface FIRVerifyPasswordRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property email
+    @brief The email of the user.
+ */
+@property(nonatomic, copy) NSString *email;
+
+/** @property password
+    @brief The password inputed by the user.
+ */
+@property(nonatomic, copy) NSString *password;
+
+/** @property pendingIDToken
+    @brief The GITKit token for the non-trusted IDP, which is to be confirmed by the user.
+ */
+@property(nonatomic, copy, nullable) NSString *pendingIDToken;
+
+/** @property captchaChallenge
+    @brief The captcha challenge.
+ */
+@property(nonatomic, copy, nullable) NSString *captchaChallenge;
+
+/** @property captchaResponse
+    @brief Response to the captcha.
+ */
+@property(nonatomic, copy, nullable) NSString *captchaResponse;
+
+/** @property returnSecureToken
+    @brief Whether the response should return access token and refresh token directly.
+    @remarks The default value is @c YES .
+ */
+@property(nonatomic, assign) BOOL returnSecureToken;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithEmail:password:requestConfiguration:
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithEmail:password:requestConfiguration:
+    @brief Designated initializer.
+    @param email The email of the user.
+    @param password The password inputed by the user.
+    @param requestConfiguration The configu
+ */
+- (nullable instancetype)initWithEmail:(NSString *)email
+                              password:(NSString *)password
+                  requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.m
new file mode 100644
index 0000000..97ac2a7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.m	
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kVerifyPasswordEndpoint
+    @brief The "verifyPassword" endpoint.
+ */
+static NSString *const kVerifyPasswordEndpoint = @"verifyPassword";
+
+/** @var kEmailKey
+    @brief The key for the "email" value in the request.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kPasswordKey
+    @brief The key for the "password" value in the request.
+ */
+static NSString *const kPasswordKey = @"password";
+
+/** @var kPendingIDTokenKey
+    @brief The key for the "pendingIdToken" value in the request.
+ */
+static NSString *const kPendingIDTokenKey = @"pendingIdToken";
+
+/** @var kCaptchaChallengeKey
+    @brief The key for the "captchaChallenge" value in the request.
+ */
+static NSString *const kCaptchaChallengeKey = @"captchaChallenge";
+
+/** @var kCaptchaResponseKey
+    @brief The key for the "captchaResponse" value in the request.
+ */
+static NSString *const kCaptchaResponseKey = @"captchaResponse";
+
+/** @var kReturnSecureTokenKey
+    @brief The key for the "returnSecureToken" value in the request.
+ */
+static NSString *const kReturnSecureTokenKey = @"returnSecureToken";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRVerifyPasswordRequest
+
+- (nullable instancetype)initWithEmail:(NSString *)email
+                              password:(NSString *)password
+                  requestConfiguration:(nonnull FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyPasswordEndpoint requestConfiguration:requestConfiguration];
+  if (self) {
+    _email = [email copy];
+    _password = [password copy];
+    _returnSecureToken = YES;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *_Nullable *_Nullable)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_email) {
+    postBody[kEmailKey] = _email;
+  }
+  if (_password) {
+    postBody[kPasswordKey] = _password;
+  }
+  if (_pendingIDToken) {
+    postBody[kPendingIDTokenKey] = _pendingIDToken;
+  }
+  if (_captchaChallenge) {
+    postBody[kCaptchaChallengeKey] = _captchaChallenge;
+  }
+  if (_captchaResponse) {
+    postBody[kCaptchaResponseKey] = _captchaResponse;
+  }
+  if (_returnSecureToken) {
+    postBody[kReturnSecureTokenKey] = @YES;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h
new file mode 100644
index 0000000..26563c7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h	
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRVerifyPasswordResponse
+    @brief Represents the response from the verifyPassword endpoint.
+    @remarks Possible error codes:
+       - FIRAuthInternalErrorCodeUserDisabled
+       - FIRAuthInternalErrorCodeEmailNotFound
+    @see https://developers.google.com/identity/toolkit/web/reference/relyingparty/verifyPassword
+ */
+@interface FIRVerifyPasswordResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property localID
+    @brief The RP local ID if it's already been mapped to the IdP account identified by the
+        federated ID.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *localID;
+
+/** @property email
+    @brief The email returned by the IdP. NOTE: The federated login user may not own the email.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *email;
+
+/** @property displayName
+    @brief The display name of the user.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *displayName;
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+/** @property photoURL
+    @brief The URI of the public accessible profile picture.
+ */
+@property(nonatomic, strong, readonly, nullable) NSURL *photoURL;
+
+@property(nonatomic, strong, readonly, nullable) NSString *MFAPendingCredential;
+
+@property(nonatomic, strong, readonly, nullable) NSArray<FIRAuthProtoMFAEnrollment *> *MFAInfo;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.m
new file mode 100644
index 0000000..df8208f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.m	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRVerifyPasswordResponse
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _localID = [dictionary[@"localId"] copy];
+  _email = [dictionary[@"email"] copy];
+  _displayName = [dictionary[@"displayName"] copy];
+  _IDToken = [dictionary[@"idToken"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _photoURL = dictionary[@"photoUrl"] ? [NSURL URLWithString:dictionary[@"photoUrl"]] : nil;
+
+  if (dictionary[@"mfaInfo"] != nil) {
+    NSMutableArray<FIRAuthProtoMFAEnrollment *> *MFAInfo = [NSMutableArray array];
+    NSArray *MFAInfoDataArray = dictionary[@"mfaInfo"];
+    for (NSDictionary *MFAInfoData in MFAInfoDataArray) {
+      FIRAuthProtoMFAEnrollment *MFAEnrollment =
+          [[FIRAuthProtoMFAEnrollment alloc] initWithDictionary:MFAInfoData];
+      [MFAInfo addObject:MFAEnrollment];
+    }
+    _MFAInfo = MFAInfo;
+  }
+  _MFAPendingCredential = [dictionary[@"mfaPendingCredential"] copy];
+
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h
new file mode 100644
index 0000000..da8d4e8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h	
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthOperationType.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRVerifyPhoneNumberRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+/** @property verificationID
+    @brief The verification ID obtained from the response of @c sendVerificationCode.
+*/
+@property(nonatomic, readonly, nullable) NSString *verificationID;
+
+/** @property verificationCode
+    @brief The verification code provided by the user.
+*/
+@property(nonatomic, readonly, nullable) NSString *verificationCode;
+
+/** @property accessToken
+    @brief The STS Access Token for the authenticated user.
+ */
+@property(nonatomic, copy, nullable) NSString *accessToken;
+
+/** @var temporaryProof
+    @brief The temporary proof code, previously returned from the backend.
+ */
+@property(nonatomic, readonly, nonnull) NSString *temporaryProof;
+
+/** @var phoneNumber
+    @brief The phone number to be verified in the request.
+ */
+@property(nonatomic, readonly, nonnull) NSString *phoneNumber;
+
+/** @var operation
+    @brief The type of operation triggering this verify phone number request.
+ */
+@property(nonatomic, assign, readonly) FIRAuthOperationType operation;
+
+/** @fn initWithEndpoint:requestConfiguration:
+    @brief Please use initWithVerificationID:verificationCode:requestConfiguration
+ */
+- (nullable instancetype)initWithEndpoint:(NSString *)endpoint
+                     requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_UNAVAILABLE;
+
+/** @fn initWithTemporaryProof:phoneNumberAPIKey
+    @brief Designated initializer.
+    @param temporaryProof The temporary proof sent by the backed.
+    @param phoneNumber The phone number associated with the credential to be signed in.
+    @param operation Indicates what operation triggered the verify phone number request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithTemporaryProof:(NSString *)temporaryProof
+                                    phoneNumber:(NSString *)phoneNumber
+                                      operation:(FIRAuthOperationType)operation
+                           requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+/** @fn initWithVerificationID:verificationCode:requestConfiguration
+    @brief Designated initializer.
+    @param verificationID The verification ID obtained from the response of @c sendVerificationCode.
+    @param verificationCode The verification code provided by the user.
+    @param operation Indicates what operation triggered the verify phone number request.
+    @param requestConfiguration An object containing configurations to be added to the request.
+ */
+- (nullable instancetype)initWithVerificationID:(NSString *)verificationID
+                               verificationCode:(NSString *)verificationCode
+                                      operation:(FIRAuthOperationType)operation
+                           requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.m
new file mode 100644
index 0000000..99cb54b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.m	
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kVerifyPhoneNumberEndPoint
+    @brief The "verifyPhoneNumber" endpoint.
+ */
+static NSString *const kVerifyPhoneNumberEndPoint = @"verifyPhoneNumber";
+
+/** @var kVerificationIDKey
+    @brief The key for the verification ID parameter in the request.
+ */
+static NSString *const kVerificationIDKey = @"sessionInfo";
+
+/** @var kVerificationCodeKey
+    @brief The key for the verification code parameter in the request.
+ */
+static NSString *const kVerificationCodeKey = @"code";
+
+/** @var kIDTokenKey
+    @brief The key for the "ID Token" value in the request.
+ */
+static NSString *const kIDTokenKey = @"idToken";
+
+/** @var kTemporaryProofKey
+    @brief The key for the temporary proof value in the request.
+ */
+static NSString *const kTemporaryProofKey = @"temporaryProof";
+
+/** @var kPhoneNumberKey
+    @brief The key for the phone number value in the request.
+ */
+static NSString *const kPhoneNumberKey = @"phoneNumber";
+
+/** @var kOperationKey
+    @brief The key for the operation value in the request.
+ */
+static NSString *const kOperationKey = @"operation";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRVerifyPhoneNumberRequest
+
+- (nullable instancetype)initWithTemporaryProof:(NSString *)temporaryProof
+                                    phoneNumber:(NSString *)phoneNumber
+                                      operation:(FIRAuthOperationType)operation
+                           requestConfiguration:
+                               (FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyPhoneNumberEndPoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _temporaryProof = [temporaryProof copy];
+    _phoneNumber = [phoneNumber copy];
+    _operation = operation;
+  }
+  return self;
+}
+
+- (nullable instancetype)initWithVerificationID:(NSString *)verificationID
+                               verificationCode:(NSString *)verificationCode
+                                      operation:(FIRAuthOperationType)operation
+                           requestConfiguration:
+                               (FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kVerifyPhoneNumberEndPoint
+            requestConfiguration:requestConfiguration];
+  if (self) {
+    _verificationID = verificationID;
+    _verificationCode = verificationCode;
+    _operation = operation;
+  }
+  return self;
+}
+
+/** @fn FIRAuthOperationString
+    @brief Returns a string object corresponding to the provided FIRAuthOperationType value.
+    @param operationType The value of the FIRAuthOperationType enum which will be translated to its
+        corresponding string value.
+    @return The string value corresponding to the FIRAuthOperationType argument.
+ */
+NSString *const FIRAuthOperationString(FIRAuthOperationType operationType) {
+  switch (operationType) {
+    case FIRAuthOperationTypeUnspecified:
+      return @"VERIFY_OP_UNSPECIFIED";
+    case FIRAuthOperationTypeSignUpOrSignIn:
+      return @"SIGN_UP_OR_IN";
+    case FIRAuthOperationTypeReauth:
+      return @"REAUTH";
+    case FIRAuthOperationTypeLink:
+      return @"LINK";
+    case FIRAuthOperationTypeUpdate:
+      return @"UPDATE";
+  }
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_verificationID) {
+    postBody[kVerificationIDKey] = _verificationID;
+  }
+  if (_verificationCode) {
+    postBody[kVerificationCodeKey] = _verificationCode;
+  }
+  if (_accessToken) {
+    postBody[kIDTokenKey] = _accessToken;
+  }
+  if (_temporaryProof) {
+    postBody[kTemporaryProofKey] = _temporaryProof;
+  }
+  if (_phoneNumber) {
+    postBody[kPhoneNumberKey] = _phoneNumber;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  NSString *operation = FIRAuthOperationString(_operation);
+  postBody[kOperationKey] = operation;
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h
new file mode 100644
index 0000000..7817ccf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRVerifyPhoneNumberResponse : NSObject <FIRAuthRPCResponse>
+
+/** @property IDToken
+    @brief Either an authorization code suitable for performing an STS token exchange, or the
+        access token from Secure Token Service, depending on whether @c returnSecureToken is set
+        on the request.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *IDToken;
+
+/** @property refreshToken
+    @brief The refresh token from Secure Token Service.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *refreshToken;
+
+/** @property localID
+    @brief The Firebase Auth user ID.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *localID;
+
+/** @property phoneNumber
+    @brief The verified phone number.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *phoneNumber;
+
+/** @property temporaryProof
+    @brief The temporary proof code returned by the backend.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *temporaryProof;
+
+/** @property isNewUser
+    @brief Flag indicating that the user signing in is a new user and not a returning user.
+ */
+@property(nonatomic, assign) BOOL isNewUser;
+
+/** @property approximateExpirationDate
+    @brief The approximate expiration date of the access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *approximateExpirationDate;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.m
new file mode 100644
index 0000000..902fb96
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.m	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRVerifyPhoneNumberResponse
+
+- (nullable NSString *)expectedKind {
+  return nil;
+}
+
+- (BOOL)setWithDictionary:(NSDictionary *)dictionary error:(NSError *_Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  _isNewUser = [dictionary[@"isNewUser"] boolValue];
+  _localID = [dictionary[@"localId"] copy];
+  _phoneNumber = [dictionary[@"phoneNumber"] copy];
+  _temporaryProof = [dictionary[@"temporaryProof"] copy];
+  _approximateExpirationDate =
+      [dictionary[@"expiresIn"] isKindOfClass:[NSString class]]
+          ? [NSDate dateWithTimeIntervalSinceNow:[dictionary[@"expiresIn"] doubleValue]]
+          : nil;
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.h
new file mode 100644
index 0000000..edd8a73
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFinalizeMFAEnrollmentRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) NSString *displayName;
+
+@property(nonatomic, copy, readonly, nullable)
+    FIRAuthProtoFinalizeMFAPhoneRequestInfo *verificationInfo;
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                             displayName:(NSString *)displayName
+                        verificationInfo:(FIRAuthProtoFinalizeMFAPhoneRequestInfo *)verificationInfo
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.m
new file mode 100644
index 0000000..80926bd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.m	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentRequest.h"
+
+static NSString *const kFinalizeMFAEnrollmentEndPoint = @"accounts/mfaEnrollment:finalize";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRFinalizeMFAEnrollmentRequest
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                             displayName:(NSString *)displayName
+                        verificationInfo:(FIRAuthProtoFinalizeMFAPhoneRequestInfo *)verificationInfo
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kFinalizeMFAEnrollmentEndPoint
+            requestConfiguration:requestConfiguration
+             useIdentityPlatform:YES
+                      useStaging:NO];
+  if (self) {
+    _IDToken = IDToken;
+    _displayName = displayName;
+    _verificationInfo = verificationInfo;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_IDToken) {
+    postBody[@"idToken"] = _IDToken;
+  }
+  if (_displayName) {
+    postBody[@"displayName"] = _displayName;
+  }
+  if (_verificationInfo) {
+    if ([_verificationInfo isKindOfClass:[FIRAuthProtoFinalizeMFAPhoneRequestInfo class]]) {
+      postBody[@"phoneVerificationInfo"] = [_verificationInfo dictionary];
+    }
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.h
new file mode 100644
index 0000000..aca12a1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFinalizeMFAEnrollmentResponse : NSObject <FIRAuthRPCResponse>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.m
new file mode 100644
index 0000000..1e9cac5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.m	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRFinalizeMFAEnrollmentResponse.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h"
+
+@implementation FIRFinalizeMFAEnrollmentResponse
+
+- (BOOL)setWithDictionary:(nonnull NSDictionary *)dictionary
+                    error:(NSError *__autoreleasing _Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  return YES;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h
new file mode 100644
index 0000000..62599f6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRStartMFAEnrollmentRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) FIRAuthProtoStartMFAPhoneRequestInfo *enrollmentInfo;
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                          enrollmentInfo:(FIRAuthProtoStartMFAPhoneRequestInfo *)enrollmentInfo
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.m
new file mode 100644
index 0000000..1504cc2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.m	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h"
+
+static NSString *const kStartMFAEnrollmentEndPoint = @"accounts/mfaEnrollment:start";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRStartMFAEnrollmentRequest
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                          enrollmentInfo:(FIRAuthProtoStartMFAPhoneRequestInfo *)enrollmentInfo
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kStartMFAEnrollmentEndPoint
+            requestConfiguration:requestConfiguration
+             useIdentityPlatform:YES
+                      useStaging:NO];
+  if (self) {
+    _IDToken = IDToken;
+    _enrollmentInfo = enrollmentInfo;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_IDToken) {
+    postBody[@"idToken"] = _IDToken;
+  }
+  if (_enrollmentInfo) {
+    if ([_enrollmentInfo isKindOfClass:[FIRAuthProtoStartMFAPhoneRequestInfo class]]) {
+      postBody[@"phoneEnrollmentInfo"] = [_enrollmentInfo dictionary];
+    }
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h
new file mode 100644
index 0000000..d0d5bda
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRStartMFAEnrollmentResponse : NSObject <FIRAuthRPCResponse>
+
+@property(nonatomic, copy, readonly, nullable)
+    FIRAuthProtoStartMFAPhoneResponseInfo *enrollmentResponse;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.m
new file mode 100644
index 0000000..658462c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.m	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentResponse.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h"
+
+@implementation FIRStartMFAEnrollmentResponse
+
+- (BOOL)setWithDictionary:(nonnull NSDictionary *)dictionary
+                    error:(NSError *__autoreleasing _Nullable *_Nullable)error {
+  if (dictionary[@"phoneSessionInfo"] != nil) {
+    NSDictionary *data = dictionary[@"phoneSessionInfo"];
+    _enrollmentResponse = [[FIRAuthProtoStartMFAPhoneResponseInfo alloc] initWithDictionary:data];
+  } else {
+    return NO;
+  }
+  return YES;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h
new file mode 100644
index 0000000..155f5ea
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFinalizeMFASignInRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAPendingCredential;
+
+@property(nonatomic, copy, readonly, nullable)
+    FIRAuthProtoFinalizeMFAPhoneRequestInfo *verificationInfo;
+
+- (nullable instancetype)
+    initWithMFAPendingCredential:(NSString *)MFAPendingCredential
+                verificationInfo:(FIRAuthProtoFinalizeMFAPhoneRequestInfo *)verificationInfo
+            requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.m
new file mode 100644
index 0000000..cae48ca
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.m	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h"
+
+static NSString *const kFinalizeMFASignInEndPoint = @"accounts/mfaSignIn:finalize";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRFinalizeMFASignInRequest
+
+- (nullable instancetype)
+    initWithMFAPendingCredential:(NSString *)MFAPendingCredential
+                verificationInfo:(FIRAuthProtoFinalizeMFAPhoneRequestInfo *)verificationInfo
+            requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kFinalizeMFASignInEndPoint
+            requestConfiguration:requestConfiguration
+             useIdentityPlatform:YES
+                      useStaging:NO];
+  if (self) {
+    _MFAPendingCredential = MFAPendingCredential;
+    _verificationInfo = verificationInfo;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_MFAPendingCredential) {
+    postBody[@"mfaPendingCredential"] = _MFAPendingCredential;
+  }
+  if (_verificationInfo) {
+    if ([_verificationInfo isKindOfClass:[FIRAuthProtoFinalizeMFAPhoneRequestInfo class]]) {
+      postBody[@"phoneVerificationInfo"] = [_verificationInfo dictionary];
+    }
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.h
new file mode 100644
index 0000000..5ad8bd6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFinalizeMFASignInResponse : NSObject <FIRAuthRPCResponse>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.m
new file mode 100644
index 0000000..0763880
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.m	
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInResponse.h"
+
+@implementation FIRFinalizeMFASignInResponse
+
+- (BOOL)setWithDictionary:(nonnull NSDictionary *)dictionary
+                    error:(NSError *__autoreleasing _Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  return YES;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.h
new file mode 100644
index 0000000..8a12bad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRStartMFASignInRequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAPendingCredential;
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAEnrollmentID;
+
+@property(nonatomic, copy, readonly, nullable) FIRAuthProtoStartMFAPhoneRequestInfo *signInInfo;
+
+- (nullable instancetype)
+    initWithMFAPendingCredential:(NSString *)MFAPendingCredential
+                 MFAEnrollmentID:(NSString *)MFAEnrollmentID
+                      signInInfo:(FIRAuthProtoStartMFAPhoneRequestInfo *)signInInfo
+            requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.m
new file mode 100644
index 0000000..dee5b2c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.m	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInRequest.h"
+
+static NSString *const kStartMFASignInEndPoint = @"accounts/mfaSignIn:start";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRStartMFASignInRequest
+
+- (nullable instancetype)
+    initWithMFAPendingCredential:(NSString *)MFAPendingCredential
+                 MFAEnrollmentID:(NSString *)MFAEnrollmentID
+                      signInInfo:(FIRAuthProtoStartMFAPhoneRequestInfo *)signInInfo
+            requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kStartMFASignInEndPoint
+            requestConfiguration:requestConfiguration
+             useIdentityPlatform:YES
+                      useStaging:NO];
+  if (self) {
+    _MFAPendingCredential = MFAPendingCredential;
+    _MFAEnrollmentID = MFAEnrollmentID;
+    _signInInfo = signInInfo;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_MFAPendingCredential) {
+    postBody[@"mfaPendingCredential"] = _MFAPendingCredential;
+  }
+  if (_MFAEnrollmentID) {
+    postBody[@"mfaEnrollmentId"] = _MFAEnrollmentID;
+  }
+  if (_signInInfo) {
+    if ([_signInInfo isKindOfClass:[FIRAuthProtoStartMFAPhoneRequestInfo class]]) {
+      postBody[@"phoneSignInInfo"] = [_signInInfo dictionary];
+    }
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.h
new file mode 100644
index 0000000..bd1c372
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.h	
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRStartMFASignInResponse : NSObject <FIRAuthRPCResponse>
+
+@property(nonatomic, copy, readonly, nullable) FIRAuthProtoStartMFAPhoneResponseInfo *responseInfo;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.m
new file mode 100644
index 0000000..7ad49f8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.m	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRStartMFASignInResponse.h"
+
+@implementation FIRStartMFASignInResponse
+
+- (BOOL)setWithDictionary:(nonnull NSDictionary *)dictionary
+                    error:(NSError *__autoreleasing _Nullable *_Nullable)error {
+  if (dictionary[@"phoneResponseInfo"] != nil) {
+    NSDictionary *data = dictionary[@"phoneResponseInfo"];
+    _responseInfo = [[FIRAuthProtoStartMFAPhoneResponseInfo alloc] initWithDictionary:data];
+  } else {
+    return NO;
+  }
+  return YES;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.h
new file mode 100644
index 0000000..df211f8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCRequest.h"
+#import "FirebaseAuth/Sources/Backend/FIRIdentityToolkitRequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRWithdrawMFARequest : FIRIdentityToolkitRequest <FIRAuthRPCRequest>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAEnrollmentID;
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                         MFAEnrollmentID:(NSString *)MFAEnrollmentID
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.m
new file mode 100644
index 0000000..a7038c3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.m	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFARequest.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *const kWithdrawMFAEndPoint = @"accounts/mfaEnrollment:withdraw";
+
+/** @var kTenantIDKey
+    @brief The key for the tenant id value in the request.
+ */
+static NSString *const kTenantIDKey = @"tenantId";
+
+@implementation FIRWithdrawMFARequest
+
+- (nullable instancetype)initWithIDToken:(NSString *)IDToken
+                         MFAEnrollmentID:(NSString *)MFAEnrollmentID
+                    requestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration {
+  self = [super initWithEndpoint:kWithdrawMFAEndPoint
+            requestConfiguration:requestConfiguration
+             useIdentityPlatform:YES
+                      useStaging:NO];
+  if (self) {
+    _IDToken = IDToken;
+    _MFAEnrollmentID = MFAEnrollmentID;
+  }
+  return self;
+}
+
+- (nullable id)unencodedHTTPRequestBodyWithError:(NSError *__autoreleasing _Nullable *)error {
+  NSMutableDictionary *postBody = [NSMutableDictionary dictionary];
+  if (_IDToken) {
+    postBody[@"idToken"] = _IDToken;
+  }
+  if (_MFAEnrollmentID) {
+    postBody[@"mfaEnrollmentId"] = _MFAEnrollmentID;
+  }
+  if (self.tenantID) {
+    postBody[kTenantIDKey] = self.tenantID;
+  }
+  return [postBody copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.h
new file mode 100644
index 0000000..84adf82
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthRPCResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRWithdrawMFAResponse : NSObject <FIRAuthRPCResponse>
+
+@property(nonatomic, copy, readonly, nullable) NSString *IDToken;
+
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.m
new file mode 100644
index 0000000..7d1c3c7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.m	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Unenroll/FIRWithdrawMFAResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRWithdrawMFAResponse
+
+- (BOOL)setWithDictionary:(nonnull NSDictionary *)dictionary
+                    error:(NSError *__autoreleasing _Nullable *_Nullable)error {
+  _IDToken = [dictionary[@"idToken"] copy];
+  _refreshToken = [dictionary[@"refreshToken"] copy];
+  return YES;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h
new file mode 100644
index 0000000..5d0d861
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol FIRAuthProto <NSObject>
+
+@optional
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary;
+
+- (NSDictionary *)dictionary;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h
new file mode 100644
index 0000000..4246e62
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthProtoMFAEnrollment : NSObject <FIRAuthProto>
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAValue;
+
+@property(nonatomic, copy, readonly, nullable) NSString *MFAEnrollmentID;
+
+@property(nonatomic, copy, readonly, nullable) NSString *displayName;
+
+@property(nonatomic, copy, readonly, nullable) NSDate *enrolledAt;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.m
new file mode 100644
index 0000000..92237e9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.m	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthProtoMFAEnrollment
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    if (dictionary[@"phoneInfo"]) {
+      _MFAValue = dictionary[@"phoneInfo"];
+    }
+    _MFAEnrollmentID = dictionary[@"mfaEnrollmentId"];
+    _displayName = dictionary[@"displayName"];
+    if ([dictionary[@"enrolledAt"] isKindOfClass:[NSString class]]) {
+      NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+      [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSZ"];
+      NSDate *date = [dateFormatter dateFromString:dictionary[@"enrolledAt"]];
+      _enrolledAt = date;
+    }
+  }
+  return self;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h
new file mode 100644
index 0000000..df6e39a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthProtoFinalizeMFAPhoneRequestInfo : NSObject <FIRAuthProto>
+
+@property(nonatomic, strong, readonly, nullable) NSString *sessionInfo;
+
+@property(nonatomic, strong, readonly, nullable) NSString *code;
+
+- (instancetype)initWithSessionInfo:(NSString *)sessionInfo
+                   verificationCode:(NSString *)verificationCode;
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.m
new file mode 100644
index 0000000..b233a13
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.m	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthProtoFinalizeMFAPhoneRequestInfo
+
+- (instancetype)initWithSessionInfo:(NSString *)sessionInfo
+                   verificationCode:(NSString *)verificationCode {
+  self = [super init];
+  if (self) {
+    _sessionInfo = sessionInfo;
+    _code = verificationCode;
+  }
+  return self;
+}
+
+- (NSDictionary *)dictionary {
+  NSMutableDictionary *dict = [NSMutableDictionary dictionary];
+  if (_sessionInfo) {
+    dict[@"sessionInfo"] = _sessionInfo;
+  }
+  if (_code) {
+    dict[@"code"] = _code;
+  }
+  return [dict copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h
new file mode 100644
index 0000000..fc9af6e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h	
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthProtoFinalizeMFAPhoneResponseInfo : NSObject <FIRAuthProto>
+
+@property(nonatomic, copy, readonly, nullable) NSString *phoneNumber;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.m
new file mode 100644
index 0000000..f8f1d96
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.m	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthProtoFinalizeMFAPhoneResponseInfo
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    _phoneNumber = [dictionary[@"phoneNumber"] copy];
+  }
+  return self;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h
new file mode 100644
index 0000000..e17315f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthProtoStartMFAPhoneRequestInfo : NSObject <FIRAuthProto>
+
+@property(nonatomic, strong, readonly, nullable) NSString *phoneNumber;
+
+@property(nonatomic, strong, readonly, nullable) FIRAuthAppCredential *appCredential;
+
+@property(nonatomic, strong, readonly, nullable) NSString *reCAPTCHAToken;
+
+- (nullable instancetype)initWithPhoneNumber:(NSString *)phoneNumber
+                               appCredential:(nullable FIRAuthAppCredential *)appCredential
+                              reCAPTCHAToken:(nullable NSString *)reCAPTCHAToken;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.m
new file mode 100644
index 0000000..1c0ffea
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.m	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneRequestInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kPhoneNumberKey
+ @brief The key for the Phone Number parameter in the request.
+ */
+static NSString *const kPhoneNumberKey = @"phoneNumber";
+
+/** @var kReceiptKey
+ @brief The key for the receipt parameter in the request.
+ */
+static NSString *const kReceiptKey = @"iosReceipt";
+
+/** @var kSecretKey
+ @brief The key for the Secret parameter in the request.
+ */
+static NSString *const kSecretKey = @"iosSecret";
+
+/** @var kreCAPTCHATokenKey
+ @brief The key for the reCAPTCHAToken parameter in the request.
+ */
+static NSString *const kreCAPTCHATokenKey = @"recaptchaToken";
+
+@implementation FIRAuthProtoStartMFAPhoneRequestInfo
+
+- (nullable instancetype)initWithPhoneNumber:(NSString *)phoneNumber
+                               appCredential:(nullable FIRAuthAppCredential *)appCredential
+                              reCAPTCHAToken:(nullable NSString *)reCAPTCHAToken {
+  self = [super init];
+  if (self) {
+    _phoneNumber = [phoneNumber copy];
+    _appCredential = appCredential;
+    _reCAPTCHAToken = [reCAPTCHAToken copy];
+  }
+  return self;
+}
+
+- (NSDictionary *)dictionary {
+  NSMutableDictionary *dict = [NSMutableDictionary dictionary];
+  if (_phoneNumber) {
+    dict[kPhoneNumberKey] = _phoneNumber;
+  }
+  if (_appCredential.receipt) {
+    dict[kReceiptKey] = _appCredential.receipt;
+  }
+  if (_appCredential.secret) {
+    dict[kSecretKey] = _appCredential.secret;
+  }
+  if (_reCAPTCHAToken) {
+    dict[kreCAPTCHATokenKey] = _reCAPTCHAToken;
+  }
+  return [dict copy];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h
new file mode 100644
index 0000000..1cdb690
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h	
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProto.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthProtoStartMFAPhoneResponseInfo : NSObject <FIRAuthProto>
+
+@property(nonatomic, copy, readonly, nullable) NSString *sessionInfo;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.m
new file mode 100644
index 0000000..065e417
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.m	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoStartMFAPhoneResponseInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthProtoStartMFAPhoneResponseInfo
+
+- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
+  self = [super init];
+  if (self) {
+    _sessionInfo = [dictionary[@"sessionInfo"] copy];
+  }
+  return self;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor+Internal.h
new file mode 100644
index 0000000..43bebdb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor+Internal.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactor.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRMultiFactor () <NSSecureCoding>
+
+@property(nonatomic, weak) FIRUser *user;
+
+/** @fn initWithMFAEnrollments:
+    @brief Initialize a multi factor instance with a list of MFA enrollments.
+*/
+- (instancetype)initWithMFAEnrollments:(NSArray<FIRAuthProtoMFAEnrollment *> *)MFAEnrollments;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor.m
new file mode 100644
index 0000000..f8f8de0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactor.m	
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactor.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/Enroll/FIRStartMFAEnrollmentRequest.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactor+Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo+Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h"
+#import "FirebaseAuth/Sources/User/FIRUser_Internal.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *kEnrolledFactorsCodingKey = @"enrolledFactors";
+
+static NSString *kUserCodingKey = @"user";
+
+@implementation FIRMultiFactor
+
+- (void)getSessionWithCompletion:(nullable FIRMultiFactorSessionCallback)completion {
+  FIRMultiFactorSession *session = [FIRMultiFactorSession sessionForCurrentUser];
+  if (completion) {
+    completion(session, nil);
+  }
+}
+
+- (void)enrollWithAssertion:(FIRMultiFactorAssertion *)assertion
+                displayName:(nullable NSString *)displayName
+                 completion:(nullable FIRAuthVoidErrorCallback)completion {
+#if TARGET_OS_IOS
+  FIRPhoneMultiFactorAssertion *phoneAssertion = (FIRPhoneMultiFactorAssertion *)assertion;
+  FIRAuthProtoFinalizeMFAPhoneRequestInfo *finalizeMFAPhoneRequestInfo =
+      [[FIRAuthProtoFinalizeMFAPhoneRequestInfo alloc]
+          initWithSessionInfo:phoneAssertion.authCredential.verificationID
+             verificationCode:phoneAssertion.authCredential.verificationCode];
+  FIRFinalizeMFAEnrollmentRequest *request =
+      [[FIRFinalizeMFAEnrollmentRequest alloc] initWithIDToken:self.user.rawAccessToken
+                                                   displayName:displayName
+                                              verificationInfo:finalizeMFAPhoneRequestInfo
+                                          requestConfiguration:self.user.requestConfiguration];
+  [FIRAuthBackend
+      finalizeMultiFactorEnrollment:request
+                           callback:^(FIRFinalizeMFAEnrollmentResponse *_Nullable response,
+                                      NSError *_Nullable error) {
+                             if (error) {
+                               if (completion) {
+                                 completion(error);
+                               }
+                             } else {
+                               [FIRAuth.auth
+                                   completeSignInWithAccessToken:response.IDToken
+                                       accessTokenExpirationDate:nil
+                                                    refreshToken:response.refreshToken
+                                                       anonymous:NO
+                                                        callback:^(FIRUser *_Nullable user,
+                                                                   NSError *_Nullable error) {
+                                                          FIRAuthDataResult *result =
+                                                              [[FIRAuthDataResult alloc]
+                                                                        initWithUser:user
+                                                                  additionalUserInfo:nil];
+                                                          FIRAuthDataResultCallback
+                                                              decoratedCallback = [FIRAuth.auth
+                                                                  signInFlowAuthDataResultCallbackByDecoratingCallback:
+                                                                      ^(FIRAuthDataResult
+                                                                            *_Nullable authResult,
+                                                                        NSError *_Nullable error) {
+                                                                        if (completion) {
+                                                                          completion(error);
+                                                                        }
+                                                                      }];
+                                                          decoratedCallback(result, error);
+                                                        }];
+                             }
+                           }];
+#endif
+}
+
+- (void)unenrollWithInfo:(FIRMultiFactorInfo *)factorInfo
+              completion:(nullable FIRAuthVoidErrorCallback)completion {
+  [self unenrollWithFactorUID:factorInfo.UID completion:completion];
+}
+
+- (void)unenrollWithFactorUID:(NSString *)factorUID
+                   completion:(nullable FIRAuthVoidErrorCallback)completion {
+  FIRWithdrawMFARequest *request =
+      [[FIRWithdrawMFARequest alloc] initWithIDToken:self.user.rawAccessToken
+                                     MFAEnrollmentID:factorUID
+                                requestConfiguration:self.user.requestConfiguration];
+  [FIRAuthBackend
+      withdrawMultiFactor:request
+                 callback:^(FIRWithdrawMFAResponse *_Nullable response, NSError *_Nullable error) {
+                   if (error) {
+                     if (completion) {
+                       completion(error);
+                     }
+                   } else {
+                     [FIRAuth.auth
+                         completeSignInWithAccessToken:response.IDToken
+                             accessTokenExpirationDate:nil
+                                          refreshToken:response.refreshToken
+                                             anonymous:NO
+                                              callback:^(FIRUser *_Nullable user,
+                                                         NSError *_Nullable error) {
+                                                FIRAuthDataResult *result =
+                                                    [[FIRAuthDataResult alloc] initWithUser:user
+                                                                         additionalUserInfo:nil];
+                                                FIRAuthDataResultCallback decoratedCallback = [FIRAuth
+                                                                                                   .auth
+                                                    signInFlowAuthDataResultCallbackByDecoratingCallback:
+                                                        ^(FIRAuthDataResult *_Nullable authResult,
+                                                          NSError *_Nullable error) {
+                                                          if (error) {
+                                                            [[FIRAuth auth] signOut:NULL];
+                                                          }
+                                                          if (completion) {
+                                                            completion(error);
+                                                          }
+                                                        }];
+                                                decoratedCallback(result, error);
+                                              }];
+                   }
+                 }];
+}
+
+#pragma mark - Internal
+
+- (instancetype)initWithMFAEnrollments:(NSArray<FIRAuthProtoMFAEnrollment *> *)MFAEnrollments {
+  self = [super init];
+
+  if (self) {
+    NSMutableArray<FIRMultiFactorInfo *> *multiFactorInfoArray = [[NSMutableArray alloc] init];
+    for (FIRAuthProtoMFAEnrollment *MFAEnrollment in MFAEnrollments) {
+      FIRMultiFactorInfo *multiFactorInfo =
+          [[FIRMultiFactorInfo alloc] initWithProto:MFAEnrollment];
+      [multiFactorInfoArray addObject:multiFactorInfo];
+    }
+    _enrolledFactors = [multiFactorInfoArray copy];
+  }
+
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  self = [self init];
+  if (self) {
+    NSArray<FIRMultiFactorInfo *> *enrolledFactors =
+        [aDecoder decodeObjectOfClass:[NSArray<FIRMultiFactorInfo *> class]
+                               forKey:kEnrolledFactorsCodingKey];
+    _enrolledFactors = enrolledFactors;
+    _user = [aDecoder decodeObjectOfClass:[FIRUser class] forKey:kUserCodingKey];
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_enrolledFactors forKey:kEnrolledFactorsCodingKey];
+  [aCoder encodeObject:_user forKey:kUserCodingKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion+Internal.h
new file mode 100644
index 0000000..1d8fd62
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion+Internal.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorAssertion.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRMultiFactorAssertion () {
+ @protected
+  NSString *_factorID;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion.m
new file mode 100644
index 0000000..d5bd9b3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion.m	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorAssertion.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRMultiFactorAssertion
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorConstants.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorConstants.m
new file mode 100644
index 0000000..0c9d06b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorConstants.m	
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <Foundation/Foundation.h>
+
+#pragma mark - Multi Factor ID constants
+
+NSString *const FIRPhoneMultiFactorID = @"1";
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo+Internal.h
new file mode 100644
index 0000000..4475f63
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo+Internal.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRMultiFactorInfo () {
+ @protected
+  NSString *_factorID;
+}
+
+- (instancetype)initWithProto:(FIRAuthProtoMFAEnrollment *)proto;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo.m
new file mode 100644
index 0000000..e38e047
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo.m	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+
+static NSString *kUIDCodingKey = @"uid";
+
+static NSString *kDisplayNameCodingKey = @"displayName";
+
+static NSString *kEnrollmentDateCodingKey = @"enrollmentDate";
+
+static NSString *kFactorIDCodingKey = @"factorID";
+
+@implementation FIRMultiFactorInfo
+
+#pragma mark - Internal
+
+- (instancetype)initWithProto:(FIRAuthProtoMFAEnrollment *)proto {
+  self = [super init];
+
+  if (self) {
+    _UID = proto.MFAEnrollmentID;
+    _displayName = proto.displayName;
+    _enrollmentDate = proto.enrolledAt;
+  }
+
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  self = [self init];
+  if (self) {
+    _UID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kUIDCodingKey];
+    _displayName = [aDecoder decodeObjectOfClass:[NSString class] forKey:kDisplayNameCodingKey];
+    _enrollmentDate = [aDecoder decodeObjectOfClass:[NSDate class] forKey:kEnrollmentDateCodingKey];
+    _factorID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kFactorIDCodingKey];
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_UID forKey:kUIDCodingKey];
+  [aCoder encodeObject:_displayName forKey:kDisplayNameCodingKey];
+  [aCoder encodeObject:_enrollmentDate forKey:kEnrollmentDateCodingKey];
+  [aCoder encodeObject:_factorID forKey:kFactorIDCodingKey];
+}
+
+@end
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver+Internal.h
new file mode 100644
index 0000000..2acaebb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver+Internal.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRMultiFactorResolver ()
+
+@property(nonatomic) NSString *MFAPendingCredential;
+
+- (instancetype)initWithMFAPendingCredential:(NSString *_Nullable)MFAPendingCredential
+                                       hints:(NSArray<FIRMultiFactorInfo *> *)hints;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver.m
new file mode 100644
index 0000000..b17fe99
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver.m	
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend+MultiFactor.h"
+#import "FirebaseAuth/Sources/Backend/RPC/MultiFactor/SignIn/FIRFinalizeMFASignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/Phone/FIRAuthProtoFinalizeMFAPhoneRequestInfo.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver+Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRMultiFactorResolver
+
+- (instancetype)initWithMFAPendingCredential:(NSString *_Nullable)MFAPendingCredential
+                                       hints:(NSArray<FIRMultiFactorInfo *> *)hints {
+  self = [super init];
+  if (self) {
+    _MFAPendingCredential = MFAPendingCredential;
+    _hints = hints;
+    _auth = [FIRAuth auth];
+    _session = [[FIRMultiFactorSession alloc] init];
+    _session.MFAPendingCredential = MFAPendingCredential;
+  }
+  return self;
+}
+
+- (void)resolveSignInWithAssertion:(nonnull FIRMultiFactorAssertion *)assertion
+                        completion:(nullable FIRAuthDataResultCallback)completion {
+#if TARGET_OS_IOS
+  FIRPhoneMultiFactorAssertion *phoneAssertion = (FIRPhoneMultiFactorAssertion *)assertion;
+  FIRAuthProtoFinalizeMFAPhoneRequestInfo *finalizeMFAPhoneRequestInfo =
+      [[FIRAuthProtoFinalizeMFAPhoneRequestInfo alloc]
+          initWithSessionInfo:phoneAssertion.authCredential.verificationID
+             verificationCode:phoneAssertion.authCredential.verificationCode];
+  FIRFinalizeMFASignInRequest *request = [[FIRFinalizeMFASignInRequest alloc]
+      initWithMFAPendingCredential:self.MFAPendingCredential
+                  verificationInfo:finalizeMFAPhoneRequestInfo
+              requestConfiguration:self.auth.requestConfiguration];
+  [FIRAuthBackend
+      finalizeMultiFactorSignIn:request
+                       callback:^(FIRFinalizeMFASignInResponse *_Nullable response,
+                                  NSError *_Nullable error) {
+                         if (error) {
+                           if (completion) {
+                             completion(nil, error);
+                           }
+                         } else {
+                           [FIRAuth.auth
+                               completeSignInWithAccessToken:response.IDToken
+                                   accessTokenExpirationDate:nil
+                                                refreshToken:response.refreshToken
+                                                   anonymous:NO
+                                                    callback:^(FIRUser *_Nullable user,
+                                                               NSError *_Nullable error) {
+                                                      FIRAuthDataResult *result =
+                                                          [[FIRAuthDataResult alloc]
+                                                                    initWithUser:user
+                                                              additionalUserInfo:nil];
+                                                      FIRAuthDataResultCallback decoratedCallback =
+                                                          [FIRAuth.auth
+                                                              signInFlowAuthDataResultCallbackByDecoratingCallback:
+                                                                  completion];
+                                                      decoratedCallback(result, error);
+                                                    }];
+                         }
+                       }];
+#endif
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h
new file mode 100644
index 0000000..7e903f4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorSession.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRMultiFactorSession ()
+
+@property(nonatomic, readonly) NSString *IDToken;
+
+@property(nonatomic) NSString *MFAPendingCredential;
+
+@property(nonatomic) FIRMultiFactorInfo *multiFactorInfo;
+
++ (FIRMultiFactorSession *)sessionForCurrentUser;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession.m
new file mode 100644
index 0000000..6967740
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession.m	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorSession.h"
+
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorSession+Internal.h"
+#import "FirebaseAuth/Sources/User/FIRUser_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRMultiFactorSession
+
+#pragma mark - Private
+
+- (instancetype)initWithIDToken:(NSString *)IDToken {
+  self = [super init];
+  if (self) {
+    _IDToken = IDToken;
+  }
+  return self;
+}
+
+#pragma mark - Internal
+
++ (FIRMultiFactorSession *)sessionForCurrentUser {
+  FIRUser *currentUser = [[FIRAuth auth] currentUser];
+  NSString *IDToken = currentUser.rawAccessToken;
+  FIRMultiFactorSession *session = [[FIRMultiFactorSession alloc] initWithIDToken:IDToken];
+  return session;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h
new file mode 100644
index 0000000..e88a8ac
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRPhoneMultiFactorAssertion ()
+
+@property(nonatomic) FIRPhoneAuthCredential *authCredential;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion.m
new file mode 100644
index 0000000..9004519
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion.m	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h"
+
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorAssertion+Internal.h"
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+extern NSString *const _Nonnull FIRPhoneMultiFactorID;
+
+@implementation FIRPhoneMultiFactorAssertion
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _factorID = FIRPhoneMultiFactorID;
+  }
+  return self;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorGenerator.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorGenerator.m
new file mode 100644
index 0000000..124dffb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorGenerator.m	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorGenerator.h"
+
+#import "FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorAssertion+Internal.h"
+
+@implementation FIRPhoneMultiFactorGenerator
+
++ (FIRPhoneMultiFactorAssertion *)assertionWithCredential:
+    (FIRPhoneAuthCredential *)phoneAuthCredential {
+  FIRPhoneMultiFactorAssertion *assertion = [[FIRPhoneMultiFactorAssertion alloc] init];
+  assertion.authCredential = phoneAuthCredential;
+  return assertion;
+}
+
+@end
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo+Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo+Internal.h
new file mode 100644
index 0000000..0679755
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo+Internal.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorInfo.h"
+
+@class FIRAuthProtoMFAEnrollment;
+
+@interface FIRPhoneMultiFactorInfo ()
+
+- (instancetype)initWithProto:(FIRAuthProtoMFAEnrollment *)proto;
+
+@end
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo.m
new file mode 100644
index 0000000..af4c68c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/MultiFactor/Phone/FIRPhoneMultiFactorInfo.m	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorInfo.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/Proto/FIRAuthProtoMFAEnrollment.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorInfo+Internal.h"
+
+extern NSString *const FIRPhoneMultiFactorID;
+
+@implementation FIRPhoneMultiFactorInfo
+
+- (instancetype)initWithProto:(FIRAuthProtoMFAEnrollment *)proto {
+  self = [super initWithProto:proto];
+  if (self) {
+    _factorID = FIRPhoneMultiFactorID;
+    _phoneNumber = proto.MFAValue;
+  }
+  return self;
+}
+
+@end
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRActionCodeSettings.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRActionCodeSettings.h
new file mode 100644
index 0000000..5024bd5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRActionCodeSettings.h	
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRActionCodeSettings
+    @brief Used to set and retrieve settings related to handling action codes.
+ */
+NS_SWIFT_NAME(ActionCodeSettings)
+@interface FIRActionCodeSettings : NSObject
+
+/** @property URL
+    @brief This URL represents the state/Continue URL in the form of a universal link.
+    @remarks This URL can should be constructed as a universal link that would either directly open
+        the app where the action code would be handled or continue to the app after the action code
+        is handled by Firebase.
+ */
+@property(nonatomic, copy, nullable) NSURL *URL;
+
+/** @property handleCodeInApp
+    @brief Indicates whether the action code link will open the app directly or after being
+        redirected from a Firebase owned web widget.
+ */
+@property(assign, nonatomic) BOOL handleCodeInApp;
+
+/** @property iOSBundleID
+    @brief The iOS bundle ID, if available. The default value is the current app's bundle ID.
+ */
+@property(copy, nonatomic, readonly, nullable) NSString *iOSBundleID;
+
+/** @property androidPackageName
+    @brief The Android package name, if available.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *androidPackageName;
+
+/** @property androidMinimumVersion
+    @brief The minimum Android version supported, if available.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *androidMinimumVersion;
+
+/** @property androidInstallIfNotAvailable
+    @brief Indicates whether the Android app should be installed on a device where it is not
+       available.
+ */
+@property(nonatomic, assign, readonly) BOOL androidInstallIfNotAvailable;
+
+/** @property dynamicLinkDomain
+    @brief The Firebase Dynamic Link domain used for out of band code flow.
+ */
+@property(copy, nonatomic, nullable) NSString *dynamicLinkDomain;
+
+/** @fn setIOSBundleID
+    @brief Sets the iOS bundle Id.
+    @param iOSBundleID The iOS bundle ID.
+ */
+- (void)setIOSBundleID:(NSString *)iOSBundleID;
+
+/** @fn setAndroidPackageName:installIfNotAvailable:minimumVersion:
+    @brief Sets the Android package name, the flag to indicate whether or not to install the app
+        and the minimum Android version supported.
+    @param androidPackageName The Android package name.
+    @param installIfNotAvailable Indicates whether or not the app should be installed if not
+        available.
+    @param minimumVersion The minimum version of Android supported.
+    @remarks If installIfNotAvailable is set to YES and the link is opened on an android device, it
+        will try to install the app if not already available. Otherwise the web URL is used.
+ */
+- (void)setAndroidPackageName:(NSString *)androidPackageName
+        installIfNotAvailable:(BOOL)installIfNotAvailable
+               minimumVersion:(nullable NSString *)minimumVersion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h
new file mode 100644
index 0000000..4f6947a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRVerifyAssertionResponse;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAdditionalUserInfo
+    @brief Represents additional user data returned from an identity provider.
+ */
+NS_SWIFT_NAME(AdditionalUserInfo)
+@interface FIRAdditionalUserInfo : NSObject
+
+/** @fn init
+    @brief This class should not be initialized manually. `FIRAdditionalUserInfo` can be retrieved
+        from from an instance of `FIRAuthDataResult`.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @property providerID
+    @brief The provider identifier.
+ */
+@property(nonatomic, readonly) NSString *providerID;
+
+/** @property profile
+    @brief Dictionary containing the additional IdP specific information.
+ */
+@property(nonatomic, readonly, nullable) NSDictionary<NSString *, NSObject *> *profile;
+
+/** @property username
+    @brief username The name of the user.
+ */
+@property(nonatomic, readonly, nullable) NSString *username;
+
+/** @property newUser
+    @brief Indicates whether or not the current user was signed in for the first time.
+ */
+@property(nonatomic, readonly, getter=isNewUser) BOOL newUser;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h
new file mode 100644
index 0000000..10ce640
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h	
@@ -0,0 +1,867 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <AvailabilityMacros.h>
+#import <Foundation/Foundation.h>
+
+#import "FIRAuthAPNSTokenType.h"
+#import "FIRAuthErrors.h"
+
+@class FIRActionCodeSettings;
+@class FIRApp;
+@class FIRAuth;
+@class FIRAuthCredential;
+@class FIRAuthDataResult;
+@class FIRAuthSettings;
+@class FIRUser;
+@protocol FIRAuthStateListener;
+@protocol FIRAuthUIDelegate;
+@protocol FIRFederatedAuthProvider;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRUserUpdateCallback
+    @brief The type of block invoked when a request to update the current user is completed.
+ */
+typedef void (^FIRUserUpdateCallback)(NSError *_Nullable error) NS_SWIFT_NAME(UserUpdateCallback);
+
+/** @typedef FIRAuthStateDidChangeListenerHandle
+    @brief The type of handle returned by `FIRAuth.addAuthStateDidChangeListener:`.
+ */
+// clang-format off
+// clang-format12 merges the next two lines.
+typedef id<NSObject> FIRAuthStateDidChangeListenerHandle
+    NS_SWIFT_NAME(AuthStateDidChangeListenerHandle);
+// clang-format on
+
+/** @typedef FIRAuthStateDidChangeListenerBlock
+    @brief The type of block which can be registered as a listener for auth state did change events.
+
+    @param auth The FIRAuth object on which state changes occurred.
+    @param user Optionally; the current signed in user, if any.
+ */
+typedef void (^FIRAuthStateDidChangeListenerBlock)(FIRAuth *auth, FIRUser *_Nullable user)
+    NS_SWIFT_NAME(AuthStateDidChangeListenerBlock);
+
+/** @typedef FIRIDTokenDidChangeListenerHandle
+    @brief The type of handle returned by `FIRAuth.addIDTokenDidChangeListener:`.
+ */
+// clang-format off
+// clang-format12 merges the next two lines.
+typedef id<NSObject> FIRIDTokenDidChangeListenerHandle
+    NS_SWIFT_NAME(IDTokenDidChangeListenerHandle);
+// clang-format on
+
+/** @typedef FIRIDTokenDidChangeListenerBlock
+    @brief The type of block which can be registered as a listener for ID token did change events.
+
+    @param auth The FIRAuth object on which ID token changes occurred.
+    @param user Optionally; the current signed in user, if any.
+ */
+typedef void (^FIRIDTokenDidChangeListenerBlock)(FIRAuth *auth, FIRUser *_Nullable user)
+    NS_SWIFT_NAME(IDTokenDidChangeListenerBlock);
+
+/** @typedef FIRAuthDataResultCallback
+    @brief The type of block invoked when sign-in related events complete.
+
+    @param authResult Optionally; Result of sign-in request containing both the user and
+       the additional user info associated with the user.
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+ */
+typedef void (^FIRAuthDataResultCallback)(FIRAuthDataResult *_Nullable authResult,
+                                          NSError *_Nullable error)
+    NS_SWIFT_NAME(AuthDataResultCallback);
+/**
+    @brief The name of the `NSNotificationCenter` notification which is posted when the auth state
+        changes (for example, a new token has been produced, a user signs in or signs out). The
+        object parameter of the notification is the sender `FIRAuth` instance.
+ */
+extern const NSNotificationName FIRAuthStateDidChangeNotification NS_SWIFT_NAME(AuthStateDidChange);
+
+/** @typedef FIRAuthResultCallback
+    @brief The type of block invoked when sign-in related events complete.
+
+    @param user Optionally; the signed in user, if any.
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRAuthResultCallback)(FIRUser *_Nullable user, NSError *_Nullable error)
+    NS_SWIFT_NAME(AuthResultCallback);
+
+/** @typedef FIRProviderQueryCallback
+    @brief The type of block invoked when a list of identity providers for a given email address is
+        requested.
+
+    @param providers Optionally; a list of provider identifiers, if any.
+        @see FIRGoogleAuthProviderID etc.
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRProviderQueryCallback)(NSArray<NSString *> *_Nullable providers,
+                                         NSError *_Nullable error)
+    NS_SWIFT_NAME(ProviderQueryCallback);
+
+/** @typedef FIRSignInMethodQueryCallback
+    @brief The type of block invoked when a list of sign-in methods for a given email address is
+        requested.
+ */
+typedef void (^FIRSignInMethodQueryCallback)(NSArray<NSString *> *_Nullable, NSError *_Nullable)
+    NS_SWIFT_NAME(SignInMethodQueryCallback);
+
+/** @typedef FIRSendPasswordResetCallback
+    @brief The type of block invoked when sending a password reset email.
+
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRSendPasswordResetCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(SendPasswordResetCallback);
+
+/** @typedef FIRSendSignInLinkToEmailCallback
+    @brief The type of block invoked when sending an email sign-in link email.
+ */
+typedef void (^FIRSendSignInLinkToEmailCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(SendSignInLinkToEmailCallback);
+
+/** @typedef FIRConfirmPasswordResetCallback
+    @brief The type of block invoked when performing a password reset.
+
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRConfirmPasswordResetCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(ConfirmPasswordResetCallback);
+
+/** @typedef FIRVerifyPasswordResetCodeCallback
+    @brief The type of block invoked when verifying that an out of band code should be used to
+        perform password reset.
+
+    @param email Optionally; the email address of the user for which the out of band code applies.
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRVerifyPasswordResetCodeCallback)(NSString *_Nullable email,
+                                                   NSError *_Nullable error)
+    NS_SWIFT_NAME(VerifyPasswordResetCodeCallback);
+
+/** @typedef FIRApplyActionCodeCallback
+    @brief The type of block invoked when applying an action code.
+
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRApplyActionCodeCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(ApplyActionCodeCallback);
+
+typedef void (^FIRAuthVoidErrorCallback)(NSError *_Nullable) NS_SWIFT_NAME(AuthVoidErrorCallback);
+
+/** @class FIRActionCodeInfo
+    @brief Manages information regarding action codes.
+ */
+NS_SWIFT_NAME(ActionCodeInfo)
+@interface FIRActionCodeInfo : NSObject
+
+/**
+    @brief Operations which can be performed with action codes.
+  */
+typedef NS_ENUM(NSInteger, FIRActionCodeOperation) {
+  /** Action code for unknown operation. */
+  FIRActionCodeOperationUnknown = 0,
+
+  /** Action code for password reset operation. */
+  FIRActionCodeOperationPasswordReset = 1,
+
+  /** Action code for verify email operation. */
+  FIRActionCodeOperationVerifyEmail = 2,
+
+  /** Action code for recover email operation. */
+  FIRActionCodeOperationRecoverEmail = 3,
+
+  /** Action code for email link operation. */
+  FIRActionCodeOperationEmailLink = 4,
+
+  /** Action code for verifing and changing email */
+  FIRActionCodeOperationVerifyAndChangeEmail = 5,
+
+  /** Action code for reverting second factor addition */
+  FIRActionCodeOperationRevertSecondFactorAddition = 6,
+
+} NS_SWIFT_NAME(ActionCodeOperation);
+
+/**
+    @brief The operation being performed.
+ */
+@property(nonatomic, readonly) FIRActionCodeOperation operation;
+
+/** @property email
+    @brief The email address to which the code was sent. The new email address in the case of
+        FIRActionCodeOperationRecoverEmail.
+ */
+@property(nonatomic, nullable, readonly, copy) NSString *email;
+
+/** @property previousEmail
+    @brief The email that is being recovered in the case of FIRActionCodeOperationRecoverEmail.
+ */
+@property(nonatomic, nullable, readonly, copy) NSString *previousEmail;
+
+/** @fn init
+    @brief please use initWithOperation: instead.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+/** @class FIRActionCodeURL
+    @brief This class will allow developers to easily extract information about out of band links.
+ */
+NS_SWIFT_NAME(ActionCodeURL)
+@interface FIRActionCodeURL : NSObject
+
+/** @property APIKey
+    @brief Returns the API key from the link. nil, if not provided.
+ */
+@property(nonatomic, nullable, copy, readonly) NSString *APIKey;
+
+/** @property operation
+    @brief Returns the mode of oob action. The property will be of FIRActionCodeOperation type.
+        It will return FIRActionCodeOperationUnknown if no oob action is provided.
+ */
+@property(nonatomic, readonly) FIRActionCodeOperation operation;
+
+/** @property code
+    @brief Returns the email action code from the link. nil, if not provided.
+ */
+@property(nonatomic, nullable, copy, readonly) NSString *code;
+
+/** @property continueURL
+    @brief Returns the continue URL from the link. nil, if not provided.
+ */
+@property(nonatomic, nullable, copy, readonly) NSURL *continueURL;
+
+/** @property languageCode
+    @brief Returns the language code from the link. nil, if not provided.
+ */
+@property(nonatomic, nullable, copy, readonly) NSString *languageCode;
+
+/** @fn actionCodeURLWithLink:
+    @brief Construct an FIRActionCodeURL from an out of band link (e.g. email link).
+    @param link The oob link string used to construct the action code URL.
+    @return The FIRActionCodeURL object constructed based on the oob link provided.
+ */
++ (nullable instancetype)actionCodeURLWithLink:(NSString *)link;
+
+/** @fn init
+    @brief Please use actionCodeURLWithLink: for Objective-C or actionCodeURLWithLink(link:) for
+   Swift instead.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+/** @typedef FIRCheckActionCodeCallBack
+    @brief The type of block invoked when performing a check action code operation.
+
+    @param info Metadata corresponding to the action code.
+    @param error Optionally; if an error occurs, this is the NSError object that describes the
+        problem. Set to nil otherwise.
+ */
+typedef void (^FIRCheckActionCodeCallBack)(FIRActionCodeInfo *_Nullable info,
+                                           NSError *_Nullable error)
+    NS_SWIFT_NAME(CheckActionCodeCallback);
+
+/** @class FIRAuth
+    @brief Manages authentication for Firebase apps.
+    @remarks This class is thread-safe.
+ */
+NS_SWIFT_NAME(Auth)
+@interface FIRAuth : NSObject
+
+/** @fn auth
+    @brief Gets the auth object for the default Firebase app.
+    @remarks The default Firebase app must have already been configured or an exception will be
+        raised.
+ */
++ (FIRAuth *)auth NS_SWIFT_NAME(auth());
+
+/** @fn authWithApp:
+    @brief Gets the auth object for a `FIRApp`.
+
+    @param app The FIRApp for which to retrieve the associated FIRAuth instance.
+    @return The FIRAuth instance associated with the given FIRApp.
+ */
++ (FIRAuth *)authWithApp:(FIRApp *)app NS_SWIFT_NAME(auth(app:));
+
+/** @property app
+    @brief Gets the `FIRApp` object that this auth object is connected to.
+ */
+@property(nonatomic, weak, readonly, nullable) FIRApp *app;
+
+/** @property currentUser
+    @brief Synchronously gets the cached current user, or null if there is none.
+ */
+@property(nonatomic, strong, readonly, nullable) FIRUser *currentUser;
+
+/** @property languageCode
+    @brief The current user language code. This property can be set to the app's current language by
+        calling `useAppLanguage`.
+
+    @remarks The string used to set this property must be a language code that follows BCP 47.
+ */
+@property(nonatomic, copy, nullable) NSString *languageCode;
+
+/** @property settings
+    @brief Contains settings related to the auth object.
+ */
+@property(nonatomic, copy, nullable) FIRAuthSettings *settings;
+
+/** @property userAccessGroup
+    @brief The current user access group that the Auth instance is using. Default is nil.
+ */
+@property(readonly, nonatomic, copy, nullable) NSString *userAccessGroup;
+
+/** @property shareAuthStateAcrossDevices
+    @brief Contains shareAuthStateAcrossDevices setting related to the auth object.
+    @remarks If userAccessGroup is not set, setting shareAuthStateAcrossDevices will
+        have no effect. You should set shareAuthStateAcrossDevices to it's desired
+        state and then set the userAccessGroup after.
+ */
+@property(nonatomic) BOOL shareAuthStateAcrossDevices;
+
+/** @property tenantID
+    @brief The tenant ID of the auth instance. nil if none is available.
+ */
+@property(nonatomic, copy, nullable) NSString *tenantID;
+
+/** @property APNSToken
+    @brief The APNs token used for phone number authentication. The type of the token (production
+        or sandbox) will be attempted to be automatcially detected.
+        This property is available on iOS only.
+    @remarks If swizzling is disabled, the APNs Token must be set for phone number auth to work,
+        by either setting this property or by calling `setAPNSToken:type:`.
+ */
+@property(nonatomic, strong, nullable) NSData *APNSToken API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @fn init
+    @brief Please access auth instances using `FIRAuth.auth` and `FIRAuth.authForApp:`.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn updateCurrentUser:completion:
+    @brief Sets the currentUser on the calling Auth instance to the provided user object.
+    @param user The user object to be set as the current user of the calling Auth instance.
+    @param completion Optionally; a block invoked after the user of the calling Auth instance has
+        been updated or an error was encountered.
+ */
+- (void)updateCurrentUser:(FIRUser *)user
+               completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn fetchSignInMethodsForEmail:completion:
+    @brief Fetches the list of all sign-in methods previously used for the provided email address.
+
+    @param email The email address for which to obtain a list of sign-in methods.
+    @param completion Optionally; a block which is invoked when the list of sign in methods for the
+        specified email address is ready or an error was encountered. Invoked asynchronously on the
+        main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+
+    @remarks See @c FIRAuthErrors for a list of error codes that are common to all API methods.
+ */
+
+- (void)fetchSignInMethodsForEmail:(NSString *)email
+                        completion:(nullable void (^)(NSArray<NSString *> *_Nullable,
+                                                      NSError *_Nullable))completion;
+
+/** @fn signInWithEmail:password:completion:
+    @brief Signs in using an email address and password.
+
+    @param email The user's email address.
+    @param password The user's password.
+    @param completion Optionally; a block which is invoked when the sign in flow finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that email and password
+            accounts are not enabled. Enable them in the Auth section of the
+            Firebase console.
+        + `FIRAuthErrorCodeUserDisabled` - Indicates the user's account is disabled.
+        + `FIRAuthErrorCodeWrongPassword` - Indicates the user attempted
+            sign in with an incorrect password.
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)signInWithEmail:(NSString *)email
+               password:(NSString *)password
+             completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                           NSError *_Nullable error))completion;
+
+/** @fn signInWithEmail:link:completion:
+    @brief Signs in using an email address and email sign-in link.
+
+    @param email The user's email address.
+    @param link The email sign-in link.
+    @param completion Optionally; a block which is invoked when the sign in flow finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that email and email sign-in link
+            accounts are not enabled. Enable them in the Auth section of the
+            Firebase console.
+        + `FIRAuthErrorCodeUserDisabled` - Indicates the user's account is disabled.
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is invalid.
+
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+
+- (void)signInWithEmail:(NSString *)email
+                   link:(NSString *)link
+             completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                           NSError *_Nullable error))completion
+    API_UNAVAILABLE(watchos);
+
+/** @fn signInWithProvider:UIDelegate:completion:
+    @brief Signs in using the provided auth provider instance.
+        This method is available on iOS, macOS Catalyst, and tvOS only.
+
+    @param provider An instance of an auth provider used to initiate the sign-in flow.
+    @param UIDelegate Optionally an instance of a class conforming to the FIRAuthUIDelegate
+        protocol, this is used for presenting the web context. If nil, a default FIRAuthUIDelegate
+        will be used.
+    @param completion Optionally; a block which is invoked when the sign in flow finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+    <ul>
+        <li>@c FIRAuthErrorCodeOperationNotAllowed - Indicates that email and password
+            accounts are not enabled. Enable them in the Auth section of the
+            Firebase console.
+        </li>
+        <li>@c FIRAuthErrorCodeUserDisabled - Indicates the user's account is disabled.
+        </li>
+        <li>@c FIRAuthErrorCodeWebNetworkRequestFailed - Indicates that a network request within a
+            SFSafariViewController or WKWebView failed.
+        </li>
+        <li>@c FIRAuthErrorCodeWebInternalError - Indicates that an internal error occurred within a
+            SFSafariViewController or WKWebView.
+        </li>
+        <li>@c FIRAuthErrorCodeWebSignInUserInteractionFailure - Indicates a general failure during
+            a web sign-in flow.
+        </li>
+        <li>@c FIRAuthErrorCodeWebContextAlreadyPresented - Indicates that an attempt was made to
+            present a new web context while one was already being presented.
+        </li>
+        <li>@c FIRAuthErrorCodeWebContextCancelled - Indicates that the URL presentation was
+            cancelled prematurely by the user.
+        </li>
+        <li>@c FIRAuthErrorCodeAccountExistsWithDifferentCredential - Indicates the email asserted
+            by the credential (e.g. the email in a Facebook access token) is already in use by an
+            existing account, that cannot be authenticated with this sign-in method. Call
+            fetchProvidersForEmail for this user’s email and then prompt them to sign in with any of
+            the sign-in providers returned. This error will only be thrown if the "One account per
+            email address" setting is enabled in the Firebase console, under Auth settings.
+        </li>
+    </ul>
+
+    @remarks See @c FIRAuthErrors for a list of error codes that are common to all API methods.
+ */
+- (void)signInWithProvider:(id<FIRFederatedAuthProvider>)provider
+                UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                              NSError *_Nullable error))completion
+    API_UNAVAILABLE(macosx, watchos);
+
+/** @fn signInWithCredential:completion:
+    @brief Asynchronously signs in to Firebase with the given 3rd-party credentials (e.g. a Facebook
+        login Access Token, a Google ID Token/Access Token pair, etc.) and returns additional
+        identity provider data.
+
+    @param credential The credential supplied by the IdP.
+    @param completion Optionally; a block which is invoked when the sign in flow finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+    + `FIRAuthErrorCodeInvalidCredential` - Indicates the supplied credential is invalid.
+        This could happen if it has expired or it is malformed.
+    + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that accounts
+        with the identity provider represented by the credential are not enabled.
+        Enable them in the Auth section of the Firebase console.
+    + `FIRAuthErrorCodeAccountExistsWithDifferentCredential` - Indicates the email asserted
+        by the credential (e.g. the email in a Facebook access token) is already in use by an
+        existing account, that cannot be authenticated with this sign-in method. Call
+        fetchProvidersForEmail for this user’s email and then prompt them to sign in with any of
+        the sign-in providers returned. This error will only be thrown if the "One account per
+        email address" setting is enabled in the Firebase console, under Auth settings.
+    + `FIRAuthErrorCodeUserDisabled` - Indicates the user's account is disabled.
+    + `FIRAuthErrorCodeWrongPassword` - Indicates the user attempted sign in with an
+        incorrect password, if credential is of the type EmailPasswordAuthCredential.
+    + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+    + `FIRAuthErrorCodeMissingVerificationID` - Indicates that the phone auth credential was
+        created with an empty verification ID.
+    + `FIRAuthErrorCodeMissingVerificationCode` - Indicates that the phone auth credential
+        was created with an empty verification code.
+    + `FIRAuthErrorCodeInvalidVerificationCode` - Indicates that the phone auth credential
+        was created with an invalid verification Code.
+    + `FIRAuthErrorCodeInvalidVerificationID` - Indicates that the phone auth credential was
+        created with an invalid verification ID.
+    + `FIRAuthErrorCodeSessionExpired` - Indicates that the SMS code has expired.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods
+*/
+- (void)signInWithCredential:(FIRAuthCredential *)credential
+                  completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                                NSError *_Nullable error))completion;
+
+/** @fn signInAnonymouslyWithCompletion:
+    @brief Asynchronously creates and becomes an anonymous user.
+    @param completion Optionally; a block which is invoked when the sign in finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks If there is already an anonymous user signed in, that user will be returned instead.
+        If there is any other existing user signed in, that user will be signed out.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that anonymous accounts are
+            not enabled. Enable them in the Auth section of the Firebase console.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)signInAnonymouslyWithCompletion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                                           NSError *_Nullable error))completion;
+
+/** @fn signInWithCustomToken:completion:
+    @brief Asynchronously signs in to Firebase with the given Auth token.
+
+    @param token A self-signed custom auth token.
+    @param completion Optionally; a block which is invoked when the sign in finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidCustomToken` - Indicates a validation error with
+            the custom token.
+        + `FIRAuthErrorCodeCustomTokenMismatch` - Indicates the service account and the API key
+            belong to different projects.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)signInWithCustomToken:(NSString *)token
+                   completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                                 NSError *_Nullable error))completion;
+
+/** @fn createUserWithEmail:password:completion:
+    @brief Creates and, on success, signs in a user with the given email address and password.
+
+    @param email The user's email address.
+    @param password The user's desired password.
+    @param completion Optionally; a block which is invoked when the sign up flow finishes, or is
+        canceled. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+        + `FIRAuthErrorCodeEmailAlreadyInUse` - Indicates the email used to attempt sign up
+            already exists. Call fetchProvidersForEmail to check which sign-in mechanisms the user
+            used, and prompt the user to sign in with one of those.
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that email and password accounts
+            are not enabled. Enable them in the Auth section of the Firebase console.
+        + `FIRAuthErrorCodeWeakPassword` - Indicates an attempt to set a password that is
+            considered too weak. The NSLocalizedFailureReasonErrorKey field in the NSError.userInfo
+            dictionary object will contain more detailed explanation that can be shown to the user.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)createUserWithEmail:(NSString *)email
+                   password:(NSString *)password
+                 completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                               NSError *_Nullable error))completion;
+
+/** @fn confirmPasswordResetWithCode:newPassword:completion:
+    @brief Resets the password given a code sent to the user outside of the app and a new password
+      for the user.
+
+    @param newPassword The new password.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeWeakPassword` - Indicates an attempt to set a password that is
+            considered too weak.
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates the administrator disabled sign
+            in with the specified identity provider.
+        + `FIRAuthErrorCodeExpiredActionCode` - Indicates the OOB code is expired.
+        + `FIRAuthErrorCodeInvalidActionCode` - Indicates the OOB code is invalid.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)confirmPasswordResetWithCode:(NSString *)code
+                         newPassword:(NSString *)newPassword
+                          completion:(void (^)(NSError *_Nullable error))completion;
+
+/** @fn checkActionCode:completion:
+    @brief Checks the validity of an out of band code.
+
+    @param code The out of band code to check validity.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+ */
+- (void)checkActionCode:(NSString *)code completion:(FIRCheckActionCodeCallBack)completion;
+
+/** @fn verifyPasswordResetCode:completion:
+    @brief Checks the validity of a verify password reset code.
+
+    @param code The password reset code to be verified.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+ */
+- (void)verifyPasswordResetCode:(NSString *)code
+                     completion:
+                         (void (^)(NSString *_Nullable email, NSError *_Nullable error))completion;
+
+/** @fn applyActionCode:completion:
+    @brief Applies out of band code.
+
+    @param code The out of band code to be applied.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks This method will not work for out of band codes which require an additional parameter,
+        such as password reset code.
+ */
+- (void)applyActionCode:(NSString *)code completion:(void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendPasswordResetWithEmail:completion:
+    @brief Initiates a password reset for the given email address.
+
+    @param email The email address of the user.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
+            sent in the request.
+        + `FIRAuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
+            the console for this action.
+        + `FIRAuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
+            sending update email.
+
+
+ */
+- (void)sendPasswordResetWithEmail:(NSString *)email
+                        completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendPasswordResetWithEmail:actionCodeSetting:completion:
+    @brief Initiates a password reset for the given email address and @FIRActionCodeSettings object.
+
+    @param email The email address of the user.
+    @param actionCodeSettings An `FIRActionCodeSettings` object containing settings related to
+        handling action codes.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
+            sent in the request.
+        + `FIRAuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
+            the console for this action.
+        + `FIRAuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
+            sending update email.
+        + `FIRAuthErrorCodeMissingIosBundleID` - Indicates that the iOS bundle ID is missing when
+            `handleCodeInApp` is set to YES.
+        + `FIRAuthErrorCodeMissingAndroidPackageName` - Indicates that the android package name
+            is missing when the `androidInstallApp` flag is set to true.
+        + `FIRAuthErrorCodeUnauthorizedDomain` - Indicates that the domain specified in the
+            continue URL is not allowlisted in the Firebase console.
+        + `FIRAuthErrorCodeInvalidContinueURI` - Indicates that the domain specified in the
+            continue URI is not valid.
+
+
+ */
+- (void)sendPasswordResetWithEmail:(NSString *)email
+                actionCodeSettings:(FIRActionCodeSettings *)actionCodeSettings
+                        completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendSignInLinkToEmail:actionCodeSettings:completion:
+    @brief Sends a sign in with email link to provided email address.
+
+    @param email The email address of the user.
+    @param actionCodeSettings An `FIRActionCodeSettings` object containing settings related to
+        handling action codes.
+    @param completion Optionally; a block which is invoked when the request finishes. Invoked
+        asynchronously on the main thread in the future.
+ */
+- (void)sendSignInLinkToEmail:(NSString *)email
+           actionCodeSettings:(FIRActionCodeSettings *)actionCodeSettings
+                   completion:(nullable void (^)(NSError *_Nullable error))completion
+    API_UNAVAILABLE(watchos);
+
+/** @fn signOut:
+    @brief Signs out the current user.
+
+    @param error Optionally; if an error occurs, upon return contains an NSError object that
+        describes the problem; is nil otherwise.
+    @return @YES when the sign out request was successful. @NO otherwise.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeKeychainError` - Indicates an error occurred when accessing the
+            keychain. The `NSLocalizedFailureReasonErrorKey` field in the `NSError.userInfo`
+            dictionary will contain more information about the error encountered.
+
+ */
+- (BOOL)signOut:(NSError *_Nullable *_Nullable)error;
+
+/** @fn isSignInWithEmailLink
+    @brief Checks if link is an email sign-in link.
+
+    @param link The email sign-in link.
+    @return @YES when the link passed matches the expected format of an email sign-in link.
+ */
+- (BOOL)isSignInWithEmailLink:(NSString *)link API_UNAVAILABLE(watchos);
+
+/** @fn addAuthStateDidChangeListener:
+    @brief Registers a block as an "auth state did change" listener. To be invoked when:
+
+      + The block is registered as a listener,
+      + A user with a different UID from the current user has signed in, or
+      + The current user has signed out.
+
+    @param listener The block to be invoked. The block is always invoked asynchronously on the main
+        thread, even for it's initial invocation after having been added as a listener.
+
+    @remarks The block is invoked immediately after adding it according to it's standard invocation
+        semantics, asynchronously on the main thread. Users should pay special attention to
+        making sure the block does not inadvertently retain objects which should not be retained by
+        the long-lived block. The block itself will be retained by `FIRAuth` until it is
+        unregistered or until the `FIRAuth` instance is otherwise deallocated.
+
+    @return A handle useful for manually unregistering the block as a listener.
+ */
+
+- (FIRAuthStateDidChangeListenerHandle)addAuthStateDidChangeListener:
+    (void (^)(FIRAuth *auth, FIRUser *_Nullable user))listener;
+
+/** @fn removeAuthStateDidChangeListener:
+    @brief Unregisters a block as an "auth state did change" listener.
+
+    @param listenerHandle The handle for the listener.
+ */
+- (void)removeAuthStateDidChangeListener:(FIRAuthStateDidChangeListenerHandle)listenerHandle;
+
+/** @fn addIDTokenDidChangeListener:
+    @brief Registers a block as an "ID token did change" listener. To be invoked when:
+
+      + The block is registered as a listener,
+      + A user with a different UID from the current user has signed in,
+      + The ID token of the current user has been refreshed, or
+      + The current user has signed out.
+
+    @param listener The block to be invoked. The block is always invoked asynchronously on the main
+        thread, even for it's initial invocation after having been added as a listener.
+
+    @remarks The block is invoked immediately after adding it according to it's standard invocation
+        semantics, asynchronously on the main thread. Users should pay special attention to
+        making sure the block does not inadvertently retain objects which should not be retained by
+        the long-lived block. The block itself will be retained by `FIRAuth` until it is
+        unregistered or until the `FIRAuth` instance is otherwise deallocated.
+
+    @return A handle useful for manually unregistering the block as a listener.
+ */
+- (FIRIDTokenDidChangeListenerHandle)addIDTokenDidChangeListener:
+    (void (^)(FIRAuth *auth, FIRUser *_Nullable user))listener;
+
+/** @fn removeIDTokenDidChangeListener:
+    @brief Unregisters a block as an "ID token did change" listener.
+
+    @param listenerHandle The handle for the listener.
+ */
+- (void)removeIDTokenDidChangeListener:(FIRIDTokenDidChangeListenerHandle)listenerHandle;
+
+/** @fn useAppLanguage
+    @brief Sets `languageCode` to the app's current language.
+ */
+- (void)useAppLanguage;
+
+/** @fn useEmulatorWithHost:port
+    @brief Configures Firebase Auth to connect to an emulated host instead of the remote backend.
+ */
+- (void)useEmulatorWithHost:(NSString *)host port:(NSInteger)port;
+
+/** @fn canHandleURL:
+    @brief Whether the specific URL is handled by `FIRAuth` .
+        This method is available on iOS only.
+    @param URL The URL received by the application delegate from any of the openURL method.
+    @return Whether or the URL is handled. YES means the URL is for Firebase Auth
+        so the caller should ignore the URL from further processing, and NO means the
+        the URL is for the app (or another libaray) so the caller should continue handling
+        this URL as usual.
+    @remarks If swizzling is disabled, URLs received by the application delegate must be forwarded
+        to this method for phone number auth to work.
+ */
+- (BOOL)canHandleURL:(nonnull NSURL *)URL API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @fn setAPNSToken:type:
+    @brief Sets the APNs token along with its type.
+        This method is available on iOS only.
+    @remarks If swizzling is disabled, the APNs Token must be set for phone number auth to work,
+        by either setting calling this method or by setting the `APNSToken` property.
+ */
+- (void)setAPNSToken:(NSData *)token
+                type:(FIRAuthAPNSTokenType)type API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @fn canHandleNotification:
+    @brief Whether the specific remote notification is handled by `FIRAuth` .
+        This method is available on iOS only.
+    @param userInfo A dictionary that contains information related to the
+        notification in question.
+    @return Whether or the notification is handled. YES means the notification is for Firebase Auth
+        so the caller should ignore the notification from further processing, and NO means the
+        the notification is for the app (or another libaray) so the caller should continue handling
+        this notification as usual.
+    @remarks If swizzling is disabled, related remote notifications must be forwarded to this method
+        for phone number auth to work.
+ */
+- (BOOL)canHandleNotification:(NSDictionary *)userInfo API_UNAVAILABLE(macos, tvos, watchos);
+
+#pragma mark - User sharing
+
+/** @fn useUserAccessGroup:error:
+    @brief Switch userAccessGroup and current user to the given accessGroup and the user stored in
+        it.
+ */
+- (BOOL)useUserAccessGroup:(NSString *_Nullable)accessGroup
+                     error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn getStoredUserForAccessGroup:error:
+    @brief Get the stored user in the given accessGroup.
+ */
+- (nullable FIRUser *)getStoredUserForAccessGroup:(NSString *_Nullable)accessGroup
+                                            error:(NSError *_Nullable *_Nullable)outError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthAPNSTokenType.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthAPNSTokenType.h
new file mode 100644
index 0000000..95fc2df
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthAPNSTokenType.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ *  @brief The APNs token type for the app.
+ *      This enum is available on iOS, macOS Catalyst, tvOS, and watchOS only.
+ */
+typedef NS_ENUM(NSInteger, FIRAuthAPNSTokenType) {
+
+  /** Unknown token type.
+      The actual token type will be detected from the provisioning profile in the app's bundle.
+   */
+  FIRAuthAPNSTokenTypeUnknown,
+
+  /** Sandbox token type.
+   */
+  FIRAuthAPNSTokenTypeSandbox,
+
+  /** Production token type.
+   */
+  FIRAuthAPNSTokenTypeProd,
+} NS_SWIFT_NAME(AuthAPNSTokenType) API_UNAVAILABLE(macosx);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h
new file mode 100644
index 0000000..106d844
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthCredential
+    @brief Represents a credential.
+ */
+NS_SWIFT_NAME(AuthCredential)
+@interface FIRAuthCredential : NSObject
+
+/** @property provider
+    @brief Gets the name of the identity provider for the credential.
+ */
+@property(nonatomic, copy, readonly) NSString *provider;
+
+/** @fn init
+    @brief This is an abstract base class. Concrete instances should be created via factory
+        methods available in the various authentication provider libraries (like the Facebook
+        provider or the Google provider libraries.)
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthDataResult.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthDataResult.h
new file mode 100644
index 0000000..93c8b3b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthDataResult.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAdditionalUserInfo;
+@class FIRAuthCredential;
+@class FIRUser;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthDataResult
+    @brief Helper object that contains the result of a successful sign-in, link and reauthenticate
+        action. It contains references to a FIRUser instance and a FIRAdditionalUserInfo instance.
+ */
+NS_SWIFT_NAME(AuthDataResult)
+@interface FIRAuthDataResult : NSObject
+
+/** @fn init
+    @brief This class should not be initialized manually. `FIRAuthDataResult` instance is
+        returned as part of `FIRAuthDataResultCallback`.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @property user
+    @brief The signed in user.
+ */
+@property(nonatomic, readonly) FIRUser *user;
+
+/** @property additionalUserInfo
+    @brief If available contains the additional IdP specific information about signed in user.
+ */
+@property(nonatomic, readonly, nullable) FIRAdditionalUserInfo *additionalUserInfo;
+
+/** @property credential
+    @brief This property will be non-nil after a successful headful-lite sign-in via
+        signInWithProvider:UIDelegate:. May be used to obtain the accessToken and/or IDToken
+        pertaining to a recently signed-in user.
+ */
+@property(nonatomic, readonly, nullable) FIRAuthCredential *credential;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthErrors.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthErrors.h
new file mode 100644
index 0000000..d1c7c8a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthErrors.h	
@@ -0,0 +1,436 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthErrors
+    @remarks Error Codes common to all API Methods:
+
+        + `FIRAuthErrorCodeNetworkError`
+        + `FIRAuthErrorCodeUserNotFound`
+        + `FIRAuthErrorCodeUserTokenExpired`
+        + `FIRAuthErrorCodeTooManyRequests`
+        + `FIRAuthErrorCodeInvalidAPIKey`
+        + `FIRAuthErrorCodeAppNotAuthorized`
+        + `FIRAuthErrorCodeKeychainError`
+        + `FIRAuthErrorCodeInternalError`
+
+    @remarks Common error codes for `FIRUser` operations:
+
+        + `FIRAuthErrorCodeInvalidUserToken`
+        + `FIRAuthErrorCodeUserDisabled`
+
+ */
+NS_SWIFT_NAME(AuthErrors)
+@interface FIRAuthErrors
+
+/**
+    @brief The Firebase Auth error domain.
+ */
+extern NSString *const FIRAuthErrorDomain NS_SWIFT_NAME(AuthErrorDomain);
+
+/**
+    @brief The name of the key for the error short string of an error code.
+ */
+extern NSString *const FIRAuthErrorUserInfoNameKey NS_SWIFT_NAME(AuthErrorUserInfoNameKey);
+
+/**
+    @brief Errors with one of the following three codes:
+          - `FIRAuthErrorCodeAccountExistsWithDifferentCredential`
+          - `FIRAuthErrorCodeCredentialAlreadyInUse`
+          - `FIRAuthErrorCodeEmailAlreadyInUse`
+        may contain  an `NSError.userInfo` dictinary object which contains this key. The value
+        associated with this key is an NSString of the email address of the account that already
+        exists.
+ */
+extern NSString *const FIRAuthErrorUserInfoEmailKey NS_SWIFT_NAME(AuthErrorUserInfoEmailKey);
+
+/**
+    @brief The key used to read the updated Auth credential from the userInfo dictionary of the
+        NSError object returned. This is the updated auth credential the developer should use for
+        recovery if applicable.
+ */
+// clang-format off
+// clang-format12 will merge lines and exceed 100 character limit.
+extern NSString *const FIRAuthErrorUserInfoUpdatedCredentialKey
+    NS_SWIFT_NAME(AuthErrorUserInfoUpdatedCredentialKey);
+
+/**
+    @brief The key used to read the MFA resolver from the userInfo dictionary of the NSError object
+        returned when 2FA is required for sign-incompletion.
+ */
+extern NSString *const FIRAuthErrorUserInfoMultiFactorResolverKey
+    NS_SWIFT_NAME(AuthErrorUserInfoMultiFactorResolverKey);
+// clang-format on
+
+/**
+    @brief Error codes used by Firebase Auth.
+ */
+typedef NS_ENUM(NSInteger, FIRAuthErrorCode) {
+  /** Indicates a validation error with the custom token.
+   */
+  FIRAuthErrorCodeInvalidCustomToken = 17000,
+
+  /** Indicates the service account and the API key belong to different projects.
+   */
+  FIRAuthErrorCodeCustomTokenMismatch = 17002,
+
+  /** Indicates the IDP token or requestUri is invalid.
+   */
+  FIRAuthErrorCodeInvalidCredential = 17004,
+
+  /** Indicates the user's account is disabled on the server.
+   */
+  FIRAuthErrorCodeUserDisabled = 17005,
+
+  /** Indicates the administrator disabled sign in with the specified identity provider.
+   */
+  FIRAuthErrorCodeOperationNotAllowed = 17006,
+
+  /** Indicates the email used to attempt a sign up is already in use.
+   */
+  FIRAuthErrorCodeEmailAlreadyInUse = 17007,
+
+  /** Indicates the email is invalid.
+   */
+  FIRAuthErrorCodeInvalidEmail = 17008,
+
+  /** Indicates the user attempted sign in with a wrong password.
+   */
+  FIRAuthErrorCodeWrongPassword = 17009,
+
+  /** Indicates that too many requests were made to a server method.
+   */
+  FIRAuthErrorCodeTooManyRequests = 17010,
+
+  /** Indicates the user account was not found.
+   */
+  FIRAuthErrorCodeUserNotFound = 17011,
+
+  /** Indicates account linking is required.
+   */
+  FIRAuthErrorCodeAccountExistsWithDifferentCredential = 17012,
+
+  /** Indicates the user has attemped to change email or password more than 5 minutes after
+      signing in.
+   */
+  FIRAuthErrorCodeRequiresRecentLogin = 17014,
+
+  /** Indicates an attempt to link a provider to which the account is already linked.
+   */
+  FIRAuthErrorCodeProviderAlreadyLinked = 17015,
+
+  /** Indicates an attempt to unlink a provider that is not linked.
+   */
+  FIRAuthErrorCodeNoSuchProvider = 17016,
+
+  /** Indicates user's saved auth credential is invalid, the user needs to sign in again.
+   */
+  FIRAuthErrorCodeInvalidUserToken = 17017,
+
+  /** Indicates a network error occurred (such as a timeout, interrupted connection, or
+      unreachable host). These types of errors are often recoverable with a retry. The
+      `NSUnderlyingError` field in the `NSError.userInfo` dictionary will contain the error
+      encountered.
+   */
+  FIRAuthErrorCodeNetworkError = 17020,
+
+  /** Indicates the saved token has expired, for example, the user may have changed account
+      password on another device. The user needs to sign in again on the device that made this
+      request.
+   */
+  FIRAuthErrorCodeUserTokenExpired = 17021,
+
+  /** Indicates an invalid API key was supplied in the request.
+   */
+  FIRAuthErrorCodeInvalidAPIKey = 17023,
+
+  /** Indicates that an attempt was made to reauthenticate with a user which is not the current
+      user.
+   */
+  FIRAuthErrorCodeUserMismatch = 17024,
+
+  /** Indicates an attempt to link with a credential that has already been linked with a
+      different Firebase account
+   */
+  FIRAuthErrorCodeCredentialAlreadyInUse = 17025,
+
+  /** Indicates an attempt to set a password that is considered too weak.
+   */
+  FIRAuthErrorCodeWeakPassword = 17026,
+
+  /** Indicates the App is not authorized to use Firebase Authentication with the
+      provided API Key.
+   */
+  FIRAuthErrorCodeAppNotAuthorized = 17028,
+
+  /** Indicates the OOB code is expired.
+   */
+  FIRAuthErrorCodeExpiredActionCode = 17029,
+
+  /** Indicates the OOB code is invalid.
+   */
+  FIRAuthErrorCodeInvalidActionCode = 17030,
+
+  /** Indicates that there are invalid parameters in the payload during a "send password reset
+   *  email" attempt.
+   */
+  FIRAuthErrorCodeInvalidMessagePayload = 17031,
+
+  /** Indicates that the sender email is invalid during a "send password reset email" attempt.
+   */
+  FIRAuthErrorCodeInvalidSender = 17032,
+
+  /** Indicates that the recipient email is invalid.
+   */
+  FIRAuthErrorCodeInvalidRecipientEmail = 17033,
+
+  /** Indicates that an email address was expected but one was not provided.
+   */
+  FIRAuthErrorCodeMissingEmail = 17034,
+
+  // The enum values 17035 is reserved and should NOT be used for new error codes.
+
+  /** Indicates that the iOS bundle ID is missing when a iOS App Store ID is provided.
+   */
+  FIRAuthErrorCodeMissingIosBundleID = 17036,
+
+  /** Indicates that the android package name is missing when the `androidInstallApp` flag is set
+      to true.
+   */
+  FIRAuthErrorCodeMissingAndroidPackageName = 17037,
+
+  /** Indicates that the domain specified in the continue URL is not allowlisted in the Firebase
+      console.
+   */
+  FIRAuthErrorCodeUnauthorizedDomain = 17038,
+
+  /** Indicates that the domain specified in the continue URI is not valid.
+   */
+  FIRAuthErrorCodeInvalidContinueURI = 17039,
+
+  /** Indicates that a continue URI was not provided in a request to the backend which requires
+      one.
+   */
+  FIRAuthErrorCodeMissingContinueURI = 17040,
+
+  /** Indicates that a phone number was not provided in a call to
+      `verifyPhoneNumber:completion:`.
+   */
+  FIRAuthErrorCodeMissingPhoneNumber = 17041,
+
+  /** Indicates that an invalid phone number was provided in a call to
+      `verifyPhoneNumber:completion:`.
+   */
+  FIRAuthErrorCodeInvalidPhoneNumber = 17042,
+
+  /** Indicates that the phone auth credential was created with an empty verification code.
+   */
+  FIRAuthErrorCodeMissingVerificationCode = 17043,
+
+  /** Indicates that an invalid verification code was used in the verifyPhoneNumber request.
+   */
+  FIRAuthErrorCodeInvalidVerificationCode = 17044,
+
+  /** Indicates that the phone auth credential was created with an empty verification ID.
+   */
+  FIRAuthErrorCodeMissingVerificationID = 17045,
+
+  /** Indicates that an invalid verification ID was used in the verifyPhoneNumber request.
+   */
+  FIRAuthErrorCodeInvalidVerificationID = 17046,
+
+  /** Indicates that the APNS device token is missing in the verifyClient request.
+   */
+  FIRAuthErrorCodeMissingAppCredential = 17047,
+
+  /** Indicates that an invalid APNS device token was used in the verifyClient request.
+   */
+  FIRAuthErrorCodeInvalidAppCredential = 17048,
+
+  // The enum values between 17048 and 17051 are reserved and should NOT be used for new error
+  // codes.
+
+  /** Indicates that the SMS code has expired.
+   */
+  FIRAuthErrorCodeSessionExpired = 17051,
+
+  /** Indicates that the quota of SMS messages for a given project has been exceeded.
+   */
+  FIRAuthErrorCodeQuotaExceeded = 17052,
+
+  /** Indicates that the APNs device token could not be obtained. The app may not have set up
+      remote notification correctly, or may fail to forward the APNs device token to FIRAuth
+      if app delegate swizzling is disabled.
+   */
+  FIRAuthErrorCodeMissingAppToken = 17053,
+
+  /** Indicates that the app fails to forward remote notification to FIRAuth.
+   */
+  FIRAuthErrorCodeNotificationNotForwarded = 17054,
+
+  /** Indicates that the app could not be verified by Firebase during phone number authentication.
+   */
+  FIRAuthErrorCodeAppNotVerified = 17055,
+
+  /** Indicates that the reCAPTCHA token is not valid.
+   */
+  FIRAuthErrorCodeCaptchaCheckFailed = 17056,
+
+  /** Indicates that an attempt was made to present a new web context while one was already being
+      presented.
+   */
+  FIRAuthErrorCodeWebContextAlreadyPresented = 17057,
+
+  /** Indicates that the URL presentation was cancelled prematurely by the user.
+   */
+  FIRAuthErrorCodeWebContextCancelled = 17058,
+
+  /** Indicates a general failure during the app verification flow.
+   */
+  FIRAuthErrorCodeAppVerificationUserInteractionFailure = 17059,
+
+  /** Indicates that the clientID used to invoke a web flow is invalid.
+   */
+  FIRAuthErrorCodeInvalidClientID = 17060,
+
+  /** Indicates that a network request within a SFSafariViewController or WKWebView failed.
+   */
+  FIRAuthErrorCodeWebNetworkRequestFailed = 17061,
+
+  /** Indicates that an internal error occurred within a SFSafariViewController or WKWebView.
+   */
+  FIRAuthErrorCodeWebInternalError = 17062,
+
+  /** Indicates a general failure during a web sign-in flow.
+   */
+  FIRAuthErrorCodeWebSignInUserInteractionFailure = 17063,
+
+  /** Indicates that the local player was not authenticated prior to attempting Game Center
+      signin.
+   */
+  FIRAuthErrorCodeLocalPlayerNotAuthenticated = 17066,
+
+  /** Indicates that a non-null user was expected as an argmument to the operation but a null
+      user was provided.
+   */
+  FIRAuthErrorCodeNullUser = 17067,
+
+  /** Indicates that a Firebase Dynamic Link is not activated.
+   */
+  FIRAuthErrorCodeDynamicLinkNotActivated = 17068,
+
+  /**
+   * Represents the error code for when the given provider id for a web operation is invalid.
+   */
+  FIRAuthErrorCodeInvalidProviderID = 17071,
+
+  /**
+   * Represents the error code for when an attempt is made to update the current user with a
+   * tenantId that differs from the current FirebaseAuth instance's tenantId.
+   */
+  FIRAuthErrorCodeTenantIDMismatch = 17072,
+
+  /**
+   * Represents the error code for when a request is made to the backend with an associated tenant
+   * ID for an operation that does not support multi-tenancy.
+   */
+  FIRAuthErrorCodeUnsupportedTenantOperation = 17073,
+
+  /** Indicates that the Firebase Dynamic Link domain used is either not configured or is
+      unauthorized for the current project.
+   */
+  FIRAuthErrorCodeInvalidDynamicLinkDomain = 17074,
+
+  /** Indicates that the credential is rejected because it's misformed or mismatching.
+   */
+  FIRAuthErrorCodeRejectedCredential = 17075,
+
+  /** Indicates that the GameKit framework is not linked prior to attempting Game Center signin.
+   */
+  FIRAuthErrorCodeGameKitNotLinked = 17076,
+
+  /** Indicates that the second factor is required for signin.
+   */
+  FIRAuthErrorCodeSecondFactorRequired = 17078,
+
+  /** Indicates that the multi factor session is missing.
+   */
+  FIRAuthErrorCodeMissingMultiFactorSession = 17081,
+
+  /** Indicates that the multi factor info is missing.
+   */
+  FIRAuthErrorCodeMissingMultiFactorInfo = 17082,
+
+  /** Indicates that the multi factor session is invalid.
+   */
+  FIRAuthErrorCodeInvalidMultiFactorSession = 17083,
+
+  /** Indicates that the multi factor info is not found.
+   */
+  FIRAuthErrorCodeMultiFactorInfoNotFound = 17084,
+
+  /** Indicates that the operation is admin restricted.
+   */
+  FIRAuthErrorCodeAdminRestrictedOperation = 17085,
+
+  /** Indicates that the email is required for verification.
+   */
+  FIRAuthErrorCodeUnverifiedEmail = 17086,
+
+  /** Indicates that the second factor is already enrolled.
+   */
+  FIRAuthErrorCodeSecondFactorAlreadyEnrolled = 17087,
+
+  /** Indicates that the maximum second factor count is exceeded.
+   */
+  FIRAuthErrorCodeMaximumSecondFactorCountExceeded = 17088,
+
+  /** Indicates that the first factor is not supported.
+   */
+  FIRAuthErrorCodeUnsupportedFirstFactor = 17089,
+
+  /** Indicates that the a verifed email is required to changed to.
+   */
+  FIRAuthErrorCodeEmailChangeNeedsVerification = 17090,
+
+  /** Indicates that the nonce is missing or invalid.
+   */
+  FIRAuthErrorCodeMissingOrInvalidNonce = 17094,
+
+  /** Indicates an error for when the client identifier is missing.
+   */
+  FIRAuthErrorCodeMissingClientIdentifier = 17993,
+
+  /** Indicates an error occurred while attempting to access the keychain.
+   */
+  FIRAuthErrorCodeKeychainError = 17995,
+
+  /** Indicates an internal error occurred.
+   */
+  FIRAuthErrorCodeInternalError = 17999,
+
+  /** Raised when a JWT fails to parse correctly. May be accompanied by an underlying error
+      describing which step of the JWT parsing process failed.
+   */
+  FIRAuthErrorCodeMalformedJWT = 18000,
+} NS_SWIFT_NAME(AuthErrorCode);
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthSettings.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthSettings.h
new file mode 100644
index 0000000..1746627
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthSettings.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthSettings
+    @brief Determines settings related to an auth object.
+ */
+NS_SWIFT_NAME(AuthSettings)
+@interface FIRAuthSettings : NSObject <NSCopying>
+
+/** @property appVerificationDisabledForTesting
+    @brief Flag to determine whether app verification should be disabled for testing or not.
+ */
+@property(nonatomic, assign, getter=isAppVerificationDisabledForTesting)
+    BOOL appVerificationDisabledForTesting;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthTokenResult.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthTokenResult.h
new file mode 100644
index 0000000..3c98c5f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthTokenResult.h	
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthTokenResult
+    @brief A data class containing the ID token JWT string and other properties associated with the
+    token including the decoded payload claims.
+ */
+NS_SWIFT_NAME(AuthTokenResult)
+@interface FIRAuthTokenResult : NSObject
+
+/** @property token
+    @brief Stores the JWT string of the ID token.
+ */
+@property(nonatomic, readonly) NSString *token;
+
+/** @property expirationDate
+    @brief Stores the ID token's expiration date.
+ */
+@property(nonatomic, readonly) NSDate *expirationDate;
+
+/** @property authDate
+    @brief Stores the ID token's authentication date.
+    @remarks This is the date the user was signed in and NOT the date the token was refreshed.
+ */
+@property(nonatomic, readonly) NSDate *authDate;
+
+/** @property issuedAtDate
+    @brief Stores the date that the ID token was issued.
+    @remarks This is the date last refreshed and NOT the last authentication date.
+ */
+@property(nonatomic, readonly) NSDate *issuedAtDate;
+
+/** @property signInProvider
+    @brief Stores sign-in provider through which the token was obtained.
+    @remarks This does not necessarily map to provider IDs.
+ */
+@property(nonatomic, readonly) NSString *signInProvider;
+
+/** @property signInSecondFactor
+    @brief Stores sign-in second factor through which the token was obtained.
+ */
+@property(nonatomic, readonly) NSString *signInSecondFactor;
+
+/** @property claims
+    @brief Stores the entire payload of claims found on the ID token. This includes the standard
+        reserved claims as well as custom claims set by the developer via the Admin SDK.
+ */
+@property(nonatomic, readonly) NSDictionary<NSString *, id> *claims;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthUIDelegate.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthUIDelegate.h
new file mode 100644
index 0000000..01ab83e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthUIDelegate.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class UIViewController;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @protocol FIRAuthUIDelegate
+    @brief A protocol to handle user interface interactions for Firebase Auth.
+        This protocol is available on iOS, macOS Catalyst, and tvOS only.
+ */
+NS_SWIFT_NAME(AuthUIDelegate) API_UNAVAILABLE(macosx, watchos) @protocol FIRAuthUIDelegate<NSObject>
+
+/** @fn presentViewController:animated:completion:
+    @brief If implemented, this method will be invoked when Firebase Auth needs to display a view
+        controller.
+    @param viewControllerToPresent The view controller to be presented.
+    @param flag Decides whether the view controller presentation should be animated or not.
+    @param completion The block to execute after the presentation finishes. This block has no return
+        value and takes no parameters.
+*/
+- (void)presentViewController:(UIViewController *)viewControllerToPresent
+                     animated:(BOOL)flag
+                   completion:(void (^_Nullable)(void))completion;
+
+/** @fn dismissViewControllerAnimated:completion:
+    @brief If implemented, this method will be invoked when Firebase Auth needs to display a view
+        controller.
+    @param flag Decides whether removing the view controller should be animated or not.
+    @param completion The block to execute after the presentation finishes. This block has no return
+        value and takes no parameters.
+*/
+- (void)dismissViewControllerAnimated:(BOOL)flag
+                           completion:(void (^_Nullable)(void))completion
+    NS_SWIFT_NAME(dismiss(animated:completion:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h
new file mode 100644
index 0000000..d467f23
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the email & password identity provider.
+ */
+extern NSString *const FIREmailAuthProviderID NS_SWIFT_NAME(EmailAuthProviderID);
+
+/**
+    @brief A string constant identifying the email-link sign-in method.
+ */
+extern NSString *const FIREmailLinkAuthSignInMethod NS_SWIFT_NAME(EmailLinkAuthSignInMethod);
+
+/**
+    @brief A string constant identifying the email & password sign-in method.
+ */
+// clang-format off
+// clang-format12 merges the next two lines.
+extern NSString *const FIREmailPasswordAuthSignInMethod
+    NS_SWIFT_NAME(EmailPasswordAuthSignInMethod);
+// clang-format on
+
+/** @class FIREmailAuthProvider
+    @brief A concrete implementation of `FIRAuthProvider` for Email & Password Sign In.
+ */
+NS_SWIFT_NAME(EmailAuthProvider)
+@interface FIREmailAuthProvider : NSObject
+
+/** @fn credentialWithEmail:password:
+    @brief Creates an `FIRAuthCredential` for an email & password sign in.
+
+    @param email The user's email address.
+    @param password The user's password.
+    @return A FIRAuthCredential containing the email & password credential.
+ */
++ (FIRAuthCredential *)credentialWithEmail:(NSString *)email password:(NSString *)password;
+
+/** @fn credentialWithEmail:Link:
+    @brief Creates an `FIRAuthCredential` for an email & link sign in.
+
+    @param email The user's email address.
+    @param link The email sign-in link.
+    @return A FIRAuthCredential containing the email & link credential.
+ */
++ (FIRAuthCredential *)credentialWithEmail:(NSString *)email link:(NSString *)link;
+
+/** @fn init
+    @brief This class is not meant to be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h
new file mode 100644
index 0000000..75efe13
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFacebookAuthProvider.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the Facebook identity provider.
+ */
+extern NSString *const FIRFacebookAuthProviderID NS_SWIFT_NAME(FacebookAuthProviderID);
+
+/**
+    @brief A string constant identifying the Facebook sign-in method.
+ */
+extern NSString *const _Nonnull FIRFacebookAuthSignInMethod NS_SWIFT_NAME(FacebookAuthSignInMethod);
+
+/** @class FIRFacebookAuthProvider
+    @brief Utility class for constructing Facebook credentials.
+ */
+NS_SWIFT_NAME(FacebookAuthProvider)
+@interface FIRFacebookAuthProvider : NSObject
+
+/** @fn credentialWithAccessToken:
+    @brief Creates an `FIRAuthCredential` for a Facebook sign in.
+
+    @param accessToken The Access Token from Facebook.
+    @return A FIRAuthCredential containing the Facebook credentials.
+ */
++ (FIRAuthCredential *)credentialWithAccessToken:(NSString *)accessToken;
+
+/** @fn init
+    @brief This class should not be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFederatedAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFederatedAuthProvider.h
new file mode 100644
index 0000000..349470d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRFederatedAuthProvider.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRAuthUIDelegate.h"
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    Utility type for constructing federated auth provider credentials.
+ */
+NS_SWIFT_NAME(FederatedAuthProvider)
+@protocol FIRFederatedAuthProvider <NSObject>
+
+/** @typedef FIRAuthCredentialCallback
+    @brief The type of block invoked when obtaining an auth credential.
+    @param credential The credential obtained.
+    @param error The error that occurred if any.
+ */
+typedef void (^FIRAuthCredentialCallback)(FIRAuthCredential *_Nullable credential,
+                                          NSError *_Nullable error)
+    NS_SWIFT_NAME(AuthCredentialCallback);
+
+/** @fn getCredentialWithUIDelegate:completion:
+    @brief Used to obtain an auth credential via a mobile web flow.
+        This method is available on iOS only.
+    @param UIDelegate An optional UI delegate used to presenet the mobile web flow.
+    @param completion Optionally; a block which is invoked asynchronously on the main thread when
+        the mobile web flow is completed.
+ */
+- (void)getCredentialWithUIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                         completion:(nullable void (^)(FIRAuthCredential *_Nullable credential,
+                                                       NSError *_Nullable error))completion
+    API_UNAVAILABLE(macos, tvos, watchos);
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGameCenterAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGameCenterAuthProvider.h
new file mode 100644
index 0000000..8596dce
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGameCenterAuthProvider.h	
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the Game Center identity provider.
+ */
+extern NSString *const FIRGameCenterAuthProviderID NS_SWIFT_NAME(GameCenterAuthProviderID);
+
+/**
+    @brief A string constant identifying the Game Center sign-in method.
+ */
+extern NSString *const _Nonnull FIRGameCenterAuthSignInMethod NS_SWIFT_NAME(
+    GameCenterAuthSignInMethod);
+
+/** @typedef FIRGameCenterCredentialCallback
+    @brief The type of block invoked when the Game Center credential code has finished.
+    @param credential On success, the credential will be provided, nil otherwise.
+    @param error On error, the error that occurred, nil otherwise.
+ */
+typedef void (^FIRGameCenterCredentialCallback)(FIRAuthCredential *_Nullable credential,
+                                                NSError *_Nullable error)
+    NS_SWIFT_NAME(GameCenterCredentialCallback);
+
+/** @class FIRGameCenterAuthProvider
+    @brief A concrete implementation of @c FIRAuthProvider for Game Center Sign In. Not available on
+           watchOS.
+ */
+API_UNAVAILABLE(watchos)
+NS_SWIFT_NAME(GameCenterAuthProvider)
+@interface FIRGameCenterAuthProvider : NSObject
+
+/** @fn getCredentialWithCompletion:
+    @brief Creates a @c FIRAuthCredential for a Game Center sign in.
+ */
++ (void)getCredentialWithCompletion:
+    (void (^)(FIRAuthCredential *_Nullable credential, NSError *_Nullable error))completion
+    NS_SWIFT_NAME(getCredential(completion:));
+
+/** @fn init
+    @brief This class is not meant to be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGitHubAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGitHubAuthProvider.h
new file mode 100644
index 0000000..0577c7b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGitHubAuthProvider.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the GitHub identity provider.
+ */
+extern NSString *const FIRGitHubAuthProviderID NS_SWIFT_NAME(GitHubAuthProviderID);
+
+/**
+    @brief A string constant identifying the GitHub sign-in method.
+ */
+extern NSString *const _Nonnull FIRGitHubAuthSignInMethod NS_SWIFT_NAME(GitHubAuthSignInMethod);
+
+/** @class FIRGitHubAuthProvider
+    @brief Utility class for constructing GitHub credentials.
+ */
+NS_SWIFT_NAME(GitHubAuthProvider)
+@interface FIRGitHubAuthProvider : NSObject
+
+/** @fn credentialWithToken:
+    @brief Creates an `FIRAuthCredential` for a GitHub sign in.
+
+    @param token The GitHub OAuth access token.
+    @return A FIRAuthCredential containing the GitHub credential.
+ */
++ (FIRAuthCredential *)credentialWithToken:(NSString *)token;
+
+/** @fn init
+    @brief This class is not meant to be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGoogleAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGoogleAuthProvider.h
new file mode 100644
index 0000000..7d6fa22
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRGoogleAuthProvider.h	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the Google identity provider.
+ */
+extern NSString *const FIRGoogleAuthProviderID NS_SWIFT_NAME(GoogleAuthProviderID);
+
+/**
+    @brief A string constant identifying the Google sign-in method.
+ */
+extern NSString *const _Nonnull FIRGoogleAuthSignInMethod NS_SWIFT_NAME(GoogleAuthSignInMethod);
+
+/** @class FIRGoogleAuthProvider
+    @brief Utility class for constructing Google Sign In credentials.
+ */
+NS_SWIFT_NAME(GoogleAuthProvider)
+@interface FIRGoogleAuthProvider : NSObject
+
+/** @fn credentialWithIDToken:accessToken:
+    @brief Creates an `FIRAuthCredential` for a Google sign in.
+
+    @param IDToken The ID Token from Google.
+    @param accessToken The Access Token from Google.
+    @return A FIRAuthCredential containing the Google credentials.
+ */
++ (FIRAuthCredential *)credentialWithIDToken:(NSString *)IDToken
+                                 accessToken:(NSString *)accessToken;
+
+/** @fn init
+    @brief This class should not be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactor.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactor.h
new file mode 100644
index 0000000..ecad20b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactor.h	
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRAuth.h"
+#import "FIRMultiFactorAssertion.h"
+#import "FIRMultiFactorInfo.h"
+#import "FIRMultiFactorSession.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRMultiFactorSessionCallback
+    @brief The callback that triggered when a developer calls `getSessionWithCompletion`.
+        This type is available on iOS only.
+    @param session The multi factor session returned, if any.
+    @param error The error which occurred, if any.
+*/
+typedef void (^FIRMultiFactorSessionCallback)(FIRMultiFactorSession *_Nullable session,
+                                              NSError *_Nullable error)
+    NS_SWIFT_NAME(MultiFactorSessionCallback) API_UNAVAILABLE(macos, tvos, watchos);
+
+/**
+   @brief The string identifier for second factors. e.g. "phone".
+        This constant is available on iOS only.
+*/
+extern NSString *const _Nonnull FIRPhoneMultiFactorID NS_SWIFT_NAME(PhoneMultiFactorID)
+    API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @class FIRMultiFactor
+    @brief The interface defining the multi factor related properties and operations pertaining to a
+        user.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(MultiFactor) API_UNAVAILABLE(macos, tvos, watchos) @interface FIRMultiFactor
+    : NSObject
+
+@property(nonatomic, readonly) NSArray<FIRMultiFactorInfo *> *enrolledFactors;
+
+/** @fn getSessionWithCompletion:
+    @brief Get a session for a second factor enrollment operation.
+    @param completion A block with the session identifier for a second factor enrollment operation.
+        This is used to identify the current user trying to enroll a second factor.
+*/
+- (void)getSessionWithCompletion:(nullable void (^)(FIRMultiFactorSession *_Nullable credential,
+                                                    NSError *_Nullable error))completion;
+
+/** @fn enrollWithAssertion:displayName:completion:
+    @brief Enrolls a second factor as identified by the `FIRMultiFactorAssertion` parameter for the
+        current user.
+    @param displayName An optional display name associated with the multi factor to enroll.
+    @param completion The block invoked when the request is complete, or fails.
+*/
+- (void)enrollWithAssertion:(FIRMultiFactorAssertion *)assertion
+                displayName:(nullable NSString *)displayName
+                 completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn unenrollWithInfo:completion:
+    @brief Unenroll the given multi factor.
+    @param completion The block invoked when the request to send the verification email is complete,
+        or fails.
+*/
+- (void)unenrollWithInfo:(FIRMultiFactorInfo *)factorInfo
+              completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn unenrollWithFactorUID:completion:
+    @brief Unenroll the given multi factor.
+    @param completion The block invoked when the request to send the verification email is complete,
+        or fails.
+*/
+- (void)unenrollWithFactorUID:(NSString *)factorUID
+                   completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorAssertion.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorAssertion.h
new file mode 100644
index 0000000..f3bc340
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorAssertion.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRMultiFactorAssertion
+    @brief The base class for asserting ownership of a second factor. This is equivalent to the
+        AuthCredential class.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(MultiFactorAssertion) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRMultiFactorAssertion : NSObject
+
+/**
+   @brief The second factor identifier for this opaque object asserting a second factor.
+*/
+@property(nonatomic, readonly, nonnull) NSString *factorID;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h
new file mode 100644
index 0000000..8c02660
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRMultiFactorInfo
+    @brief Safe public structure used to represent a second factor entity from a client perspective.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(MultiFactorInfo) API_UNAVAILABLE(macos, tvos, watchos) @interface FIRMultiFactorInfo
+    : NSObject
+
+/**
+   @brief The multi-factor enrollment ID.
+*/
+@property(nonatomic, readonly) NSString *UID;
+
+/**
+   @brief The user friendly name of the current second factor.
+*/
+@property(nonatomic, readonly, nullable) NSString *displayName;
+
+/**
+   @brief The second factor enrollment date.
+*/
+@property(nonatomic, readonly) NSDate *enrollmentDate;
+
+/**
+   @brief The identifier of the second factor.
+*/
+@property(nonatomic, readonly) NSString *factorID;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h
new file mode 100644
index 0000000..6a102c5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorResolver.h	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRMultiFactor.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRMultiFactorResolver
+    @brief The data structure used to help developers resolve 2nd factor requirements on users that
+        have opted in to 2 factor authentication.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(MultiFactorResolver) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRMultiFactorResolver : NSObject
+
+/**
+   @brief The opaque session identifier for the current sign-in flow.
+*/
+@property(nonatomic, readonly) FIRMultiFactorSession *session;
+
+/**
+   @brief The list of hints for the second factors needed to complete the sign-in for the current
+       session.
+*/
+@property(nonatomic, readonly) NSArray<FIRMultiFactorInfo *> *hints NS_SWIFT_NAME(hints);
+
+/**
+   @brief The Auth reference for the current FIRMultiResolver.
+*/
+@property(nonatomic, readonly) FIRAuth *auth;
+
+/** @fn resolveSignInWithAssertion:completion:
+    @brief A helper function to help users complete sign in with a second factor using an
+        FIRMultiFactorAssertion confirming the user successfully completed the second factor
+   challenge.
+    @param completion The block invoked when the request is complete, or fails.
+*/
+- (void)resolveSignInWithAssertion:(FIRMultiFactorAssertion *)assertion
+                        completion:(nullable FIRAuthDataResultCallback)completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorSession.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorSession.h
new file mode 100644
index 0000000..1b64b28
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorSession.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRMultiFactorSession
+    @brief Opaque object that identifies the current session to enroll a second factor or to
+        complete sign in when previously enrolled.
+        This class is available on iOS only.
+ */
+NS_SWIFT_NAME(MultiFactorSession) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRMultiFactorSession : NSObject
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h
new file mode 100644
index 0000000..94abe4f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthCredential.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRAuthCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIROAuthCredential
+    @brief Internal implementation of FIRAuthCredential for generic credentials.
+ */
+NS_SWIFT_NAME(OAuthCredential)
+@interface FIROAuthCredential : FIRAuthCredential <NSSecureCoding>
+
+/** @property IDToken
+    @brief The ID Token associated with this credential.
+ */
+@property(nonatomic, readonly, nullable) NSString *IDToken;
+
+/** @property accessToken
+    @brief The access token associated with this credential.
+ */
+@property(nonatomic, readonly, nullable) NSString *accessToken;
+
+/** @property secret
+    @brief The secret associated with this credential. This will be nil for OAuth 2.0 providers.
+    @detail OAuthCredential already exposes a providerId getter. This will help the developer
+        determine whether an access token/secret pair is needed.
+ */
+@property(nonatomic, readonly, nullable) NSString *secret;
+
+/** @fn init
+    @brief This class is not supposed to be instantiated directly.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthProvider.h
new file mode 100644
index 0000000..db3f2b1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIROAuthProvider.h	
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRFederatedAuthProvider.h"
+
+@class FIRAuth;
+@class FIROAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIROAuthProvider
+    @brief A concrete implementation of `FIRAuthProvider` for generic OAuth Providers.
+ */
+NS_SWIFT_NAME(OAuthProvider)
+@interface FIROAuthProvider : NSObject <FIRFederatedAuthProvider>
+
+/** @property scopes
+    @brief Array used to configure the OAuth scopes.
+ */
+@property(nonatomic, copy, nullable) NSArray<NSString *> *scopes;
+
+/** @property customParameters
+    @brief Dictionary used to configure the OAuth custom parameters.
+ */
+@property(nonatomic, copy, nullable) NSDictionary<NSString *, NSString *> *customParameters;
+
+/** @property providerID
+    @brief The provider ID indicating the specific OAuth provider this OAuthProvider instance
+          represents.
+ */
+@property(nonatomic, copy, readonly) NSString *providerID;
+
+/** @fn providerWithProviderID:
+    @param providerID The provider ID of the IDP for which this auth provider instance will be
+        configured.
+    @return An instance of FIROAuthProvider corresponding to the specified provider ID.
+ */
++ (FIROAuthProvider *)providerWithProviderID:(NSString *)providerID;
+
+/** @fn providerWithProviderID:auth:
+    @param providerID The provider ID of the IDP for which this auth provider instance will be
+        configured.
+    @param auth The auth instance to be associated with the FIROAuthProvider instance.
+    @return An instance of FIROAuthProvider corresponding to the specified provider ID.
+ */
++ (FIROAuthProvider *)providerWithProviderID:(NSString *)providerID auth:(FIRAuth *)auth;
+
+/** @fn credentialWithProviderID:IDToken:accessToken:
+    @brief Creates an `FIRAuthCredential` for that OAuth 2 provider identified by providerID, ID
+        token and access token.
+
+    @param providerID The provider ID associated with the Auth credential being created.
+    @param IDToken The IDToken associated with the Auth credential being created.
+    @param accessToken The access token associated with the Auth credential be created, if
+        available.
+    @return A FIRAuthCredential for the specified provider ID, ID token and access token.
+ */
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                     accessToken:(nullable NSString *)accessToken;
+
+/** @fn credentialWithProviderID:accessToken:
+    @brief Creates an `FIRAuthCredential` for that OAuth 2 provider identified by providerID using
+      an ID token.
+
+    @param providerID The provider ID associated with the Auth credential being created.
+    @param accessToken The access token associated with the Auth credential be created
+    @return A FIRAuthCredential.
+ */
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                     accessToken:(NSString *)accessToken;
+
+/** @fn credentialWithProviderID:IDToken:rawNonce:accessToken:
+    @brief Creates an `FIRAuthCredential` for that OAuth 2 provider identified by providerID, ID
+        token, raw nonce and access token.
+
+    @param providerID The provider ID associated with the Auth credential being created.
+    @param IDToken The IDToken associated with the Auth credential being created.
+    @param rawNonce The raw nonce associated with the Auth credential being created.
+    @param accessToken The access token associated with the Auth credential be created, if
+        available.
+    @return A FIRAuthCredential for the specified provider ID, ID token and access token.
+ */
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                        rawNonce:(nullable NSString *)rawNonce
+                                     accessToken:(nullable NSString *)accessToken;
+
+/** @fn credentialWithProviderID:IDToken:rawNonce:
+    @brief Creates an `FIRAuthCredential` for that OAuth 2 provider identified by providerID using
+      an ID token and raw nonce.
+
+    @param providerID The provider ID associated with the Auth credential being created.
+    @param IDToken The IDToken associated with the Auth credential being created.
+    @param rawNonce The raw nonce associated with the Auth credential being created.
+    @return A FIRAuthCredential.
+ */
++ (FIROAuthCredential *)credentialWithProviderID:(NSString *)providerID
+                                         IDToken:(NSString *)IDToken
+                                        rawNonce:(nullable NSString *)rawNonce;
+
+/** @fn init
+    @brief This class is not meant to be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h
new file mode 100644
index 0000000..deea1dd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthCredential.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRAuthCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRPhoneAuthCredential
+    @brief Implementation of FIRAuthCredential for Phone Auth credentials.
+        This class is available on iOS only.
+ */
+NS_SWIFT_NAME(PhoneAuthCredential) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRPhoneAuthCredential : FIRAuthCredential<NSSecureCoding>
+
+/** @fn init
+    @brief This class is not supposed to be instantiated directly.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h
new file mode 100644
index 0000000..8a64c09
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h	
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuth;
+@class FIRMultiFactorSession;
+@class FIRPhoneAuthCredential;
+@class FIRPhoneMultiFactorInfo;
+@protocol FIRAuthUIDelegate;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var FIRPhoneAuthProviderID
+    @brief A string constant identifying the phone identity provider.
+        This constant is available on iOS only.
+ */
+extern NSString *const FIRPhoneAuthProviderID NS_SWIFT_NAME(PhoneAuthProviderID)
+    API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @var FIRPhoneAuthProviderID
+    @brief A string constant identifying the phone sign-in method.
+        This constant is available on iOS only.
+ */
+extern NSString *const _Nonnull FIRPhoneAuthSignInMethod NS_SWIFT_NAME(PhoneAuthSignInMethod)
+    API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @typedef FIRVerificationResultCallback
+    @brief The type of block invoked when a request to send a verification code has finished.
+        This type is available on iOS only.
+
+    @param verificationID On success, the verification ID provided, nil otherwise.
+    @param error On error, the error that occurred, nil otherwise.
+ */
+typedef void (^FIRVerificationResultCallback)(NSString *_Nullable verificationID,
+                                              NSError *_Nullable error)
+    NS_SWIFT_NAME(VerificationResultCallback) API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @class FIRPhoneAuthProvider
+    @brief A concrete implementation of `FIRAuthProvider` for phone auth providers.
+        This class is available on iOS only.
+ */
+NS_SWIFT_NAME(PhoneAuthProvider) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRPhoneAuthProvider : NSObject
+
+/** @fn provider
+    @brief Returns an instance of `FIRPhoneAuthProvider` for the default `FIRAuth` object.
+ */
++ (instancetype)provider NS_SWIFT_NAME(provider());
+
+/** @fn providerWithAuth:
+    @brief Returns an instance of `FIRPhoneAuthProvider` for the provided `FIRAuth` object.
+    @param auth The auth object to associate with the phone auth provider instance.
+ */
++ (instancetype)providerWithAuth:(FIRAuth *)auth NS_SWIFT_NAME(provider(auth:));
+
+/** @fn verifyPhoneNumber:UIDelegate:completion:
+    @brief Starts the phone number authentication flow by sending a verification code to the
+        specified phone number.
+    @param phoneNumber The phone number to be verified.
+    @param UIDelegate An object used to present the SFSafariViewController. The object is retained
+        by this method until the completion block is executed.
+    @param completion The callback to be invoked when the verification flow is finished.
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeCaptchaCheckFailed` - Indicates that the reCAPTCHA token obtained by
+            the Firebase Auth is invalid or has expired.
+        + `FIRAuthErrorCodeQuotaExceeded` - Indicates that the phone verification quota for this
+            project has been exceeded.
+        + `FIRAuthErrorCodeInvalidPhoneNumber` - Indicates that the phone number provided is
+            invalid.
+        + `FIRAuthErrorCodeMissingPhoneNumber` - Indicates that a phone number was not provided.
+ */
+- (void)verifyPhoneNumber:(NSString *)phoneNumber
+               UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+               completion:(nullable FIRVerificationResultCallback)completion;
+
+/** @fn verifyPhoneNumber:UIDelegate:multiFactorSession:completion:
+    @brief Verify ownership of the second factor phone number by the current user.
+    @param phoneNumber The phone number to be verified.
+    @param UIDelegate An object used to present the SFSafariViewController. The object is retained
+        by this method until the completion block is executed.
+    @param session A session to identify the MFA flow. For enrollment, this identifies the user
+        trying to enroll. For sign-in, this identifies that the user already passed the first
+        factor challenge.
+    @param completion The callback to be invoked when the verification flow is finished.
+*/
+- (void)verifyPhoneNumber:(NSString *)phoneNumber
+               UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+       multiFactorSession:(nullable FIRMultiFactorSession *)session
+               completion:(nullable FIRVerificationResultCallback)completion;
+
+/** @fn verifyPhoneNumberWithMultiFactorInfo:UIDelegate:multiFactorSession:completion:
+    @brief Verify ownership of the second factor phone number by the current user.
+    @param phoneMultiFactorInfo The phone multi factor whose number need to be verified.
+    @param UIDelegate An object used to present the SFSafariViewController. The object is retained
+        by this method until the completion block is executed.
+    @param session A session to identify the MFA flow. For enrollment, this identifies the user
+        trying to enroll. For sign-in, this identifies that the user already passed the first
+        factor challenge.
+    @param completion The callback to be invoked when the verification flow is finished.
+*/
+- (void)verifyPhoneNumberWithMultiFactorInfo:(FIRPhoneMultiFactorInfo *)phoneMultiFactorInfo
+                                  UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                          multiFactorSession:(nullable FIRMultiFactorSession *)session
+                                  completion:
+                                      (nullable void (^)(NSString *_Nullable verificationID,
+                                                         NSError *_Nullable error))completion;
+
+/** @fn credentialWithVerificationID:verificationCode:
+    @brief Creates an `FIRAuthCredential` for the phone number provider identified by the
+        verification ID and verification code.
+
+    @param verificationID The verification ID obtained from invoking
+        verifyPhoneNumber:completion:
+    @param verificationCode The verification code obtained from the user.
+    @return The corresponding phone auth credential for the verification ID and verification code
+        provided.
+ */
+- (FIRPhoneAuthCredential *)credentialWithVerificationID:(NSString *)verificationID
+                                        verificationCode:(NSString *)verificationCode;
+
+/** @fn init
+    @brief Please use the `provider` or `providerWithAuth:` methods to obtain an instance of
+        `FIRPhoneAuthProvider`.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h
new file mode 100644
index 0000000..13e6a42
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorAssertion.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRMultiFactorAssertion.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRPhoneMultiFactorAssertion
+    @brief The subclass of base class FIRMultiFactorAssertion, used to assert ownership of a phone
+        second factor.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(PhoneMultiFactorAssertion) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRPhoneMultiFactorAssertion : FIRMultiFactorAssertion
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorGenerator.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorGenerator.h
new file mode 100644
index 0000000..355b927
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorGenerator.h	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRPhoneAuthCredential.h"
+#import "FIRPhoneMultiFactorAssertion.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRPhoneMultiFactorGenerator
+    @brief The data structure used to help initialize an assertion for a second factor entity to the
+        Firebase Auth/CICP server. Depending on the type of second factor, this will help generate
+        the assertion.
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(PhoneMultiFactorGenerator) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRPhoneMultiFactorGenerator : NSObject
+
+/** @fn assertionWithCredential:
+    @brief Initializes the MFA assertion to confirm ownership of the phone second factor. Note that
+        this API is used for both enrolling and signing in with a phone second factor.
+    @param phoneAuthCredential The phone auth credential used for multi factor flows.
+*/
++ (FIRPhoneMultiFactorAssertion *)assertionWithCredential:
+    (FIRPhoneAuthCredential *)phoneAuthCredential;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorInfo.h
new file mode 100644
index 0000000..9a09dde
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneMultiFactorInfo.h	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRMultiFactorInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRPhoneMultiFactorInfo
+    @brief Extends the FIRMultiFactorInfo class for phone number second factors.
+        The identifier of this second factor is "phone".
+        This class is available on iOS only.
+*/
+NS_SWIFT_NAME(PhoneMultiFactorInfo) API_UNAVAILABLE(macos, tvos, watchos)
+    @interface FIRPhoneMultiFactorInfo : FIRMultiFactorInfo
+
+/**
+   @brief This is the phone number associated with the current second factor.
+*/
+@property(nonatomic, readonly, nonnull) NSString *phoneNumber;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRTwitterAuthProvider.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRTwitterAuthProvider.h
new file mode 100644
index 0000000..0f1b28d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRTwitterAuthProvider.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief A string constant identifying the Twitter identity provider.
+ */
+extern NSString *const FIRTwitterAuthProviderID NS_SWIFT_NAME(TwitterAuthProviderID);
+/**
+    @brief A string constant identifying the Twitter sign-in method.
+ */
+extern NSString *const _Nonnull FIRTwitterAuthSignInMethod NS_SWIFT_NAME(TwitterAuthSignInMethod);
+
+/** @class FIRTwitterAuthProvider
+    @brief Utility class for constructing Twitter credentials.
+ */
+NS_SWIFT_NAME(TwitterAuthProvider)
+@interface FIRTwitterAuthProvider : NSObject
+
+/** @fn credentialWithToken:secret:
+    @brief Creates an `FIRAuthCredential` for a Twitter sign in.
+
+    @param token The Twitter OAuth token.
+    @param secret The Twitter OAuth secret.
+    @return A FIRAuthCredential containing the Twitter credential.
+ */
++ (FIRAuthCredential *)credentialWithToken:(NSString *)token secret:(NSString *)secret;
+
+/** @fn init
+    @brief This class is not meant to be initialized.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h
new file mode 100644
index 0000000..54bdc57
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h	
@@ -0,0 +1,550 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRAuth.h"
+#import "FIRAuthDataResult.h"
+#import "FIRMultiFactor.h"
+#import "FIRUserInfo.h"
+
+@class FIRAuthTokenResult;
+@class FIRPhoneAuthCredential;
+@class FIRUserProfileChangeRequest;
+@class FIRUserMetadata;
+@protocol FIRAuthUIDelegate;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthTokenCallback
+    @brief The type of block called when a token is ready for use.
+    @see FIRUser.getIDTokenWithCompletion:
+    @see FIRUser.getIDTokenForcingRefresh:withCompletion:
+
+    @param token Optionally; an access token if the request was successful.
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+
+    @remarks One of: `token` or `error` will always be non-nil.
+ */
+typedef void (^FIRAuthTokenCallback)(NSString *_Nullable token, NSError *_Nullable error)
+    NS_SWIFT_NAME(AuthTokenCallback);
+
+/** @typedef FIRAuthTokenResultCallback
+    @brief The type of block called when a token is ready for use.
+    @see FIRUser.getIDTokenResultWithCompletion:
+    @see FIRUser.getIDTokenResultForcingRefresh:withCompletion:
+
+    @param tokenResult Optionally; an object containing the raw access token string as well as other
+        useful data pertaining to the token.
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+
+    @remarks One of: `token` or `error` will always be non-nil.
+ */
+typedef void (^FIRAuthTokenResultCallback)(FIRAuthTokenResult *_Nullable tokenResult,
+                                           NSError *_Nullable error)
+    NS_SWIFT_NAME(AuthTokenResultCallback);
+
+/** @typedef FIRUserProfileChangeCallback
+    @brief The type of block called when a user profile change has finished.
+
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+ */
+typedef void (^FIRUserProfileChangeCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(UserProfileChangeCallback);
+
+/** @typedef FIRSendEmailVerificationCallback
+    @brief The type of block called when a request to send an email verification has finished.
+
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+ */
+typedef void (^FIRSendEmailVerificationCallback)(NSError *_Nullable error)
+    NS_SWIFT_NAME(SendEmailVerificationCallback);
+
+/** @class FIRUser
+    @brief Represents a user. Firebase Auth does not attempt to validate users
+        when loading them from the keychain. Invalidated users (such as those
+        whose passwords have been changed on another client) are automatically
+        logged out when an auth-dependent operation is attempted or when the
+        ID token is automatically refreshed.
+    @remarks This class is thread-safe.
+ */
+NS_SWIFT_NAME(User)
+@interface FIRUser : NSObject <FIRUserInfo>
+
+/** @property anonymous
+    @brief Indicates the user represents an anonymous user.
+ */
+@property(nonatomic, readonly, getter=isAnonymous) BOOL anonymous;
+
+/** @property emailVerified
+    @brief Indicates the email address associated with this user has been verified.
+ */
+@property(nonatomic, readonly, getter=isEmailVerified) BOOL emailVerified;
+
+/** @property refreshToken
+    @brief A refresh token; useful for obtaining new access tokens independently.
+    @remarks This property should only be used for advanced scenarios, and is not typically needed.
+ */
+@property(nonatomic, readonly, nullable) NSString *refreshToken;
+
+/** @property providerData
+    @brief Profile data for each identity provider, if any.
+    @remarks This data is cached on sign-in and updated when linking or unlinking.
+ */
+@property(nonatomic, readonly, nonnull) NSArray<id<FIRUserInfo>> *providerData;
+
+/** @property metadata
+    @brief Metadata associated with the Firebase user in question.
+ */
+@property(nonatomic, readonly, nonnull) FIRUserMetadata *metadata;
+
+/** @property tenantID
+    @brief The tenant ID of the current user. nil if none is available.
+ */
+@property(nonatomic, readonly, nullable) NSString *tenantID;
+
+/** @property multiFactor
+    @brief Multi factor object associated with the user.
+        This property is available on iOS only.
+*/
+@property(nonatomic, readonly, nonnull)
+    FIRMultiFactor *multiFactor API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @fn init
+    @brief This class should not be instantiated.
+    @remarks To retrieve the current user, use `FIRAuth.currentUser`. To sign a user
+        in or out, use the methods on `FIRAuth`.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn updateEmail:completion:
+    @brief Updates the email address for the user. On success, the cached user profile data is
+        updated.
+    @remarks May fail if there is already an account with this email address that was created using
+        email and password authentication.
+
+    @param email The email address for the user.
+    @param completion Optionally; the block invoked when the user profile change has finished.
+        Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
+            sent in the request.
+        + `FIRAuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
+            the console for this action.
+        + `FIRAuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
+            sending update email.
+        + `FIRAuthErrorCodeEmailAlreadyInUse` - Indicates the email is already in use by another
+            account.
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+        + `FIRAuthErrorCodeRequiresRecentLogin` - Updating a user’s email is a security
+            sensitive operation that requires a recent login from the user. This error indicates
+            the user has not signed in recently enough. To resolve, reauthenticate the user by
+            invoking reauthenticateWithCredential:completion: on FIRUser.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)updateEmail:(NSString *)email
+         completion:(nullable void (^)(NSError *_Nullable error))completion
+    NS_SWIFT_NAME(updateEmail(to:completion:));
+
+/** @fn updatePassword:completion:
+    @brief Updates the password for the user. On success, the cached user profile data is updated.
+
+    @param password The new password for the user.
+    @param completion Optionally; the block invoked when the user profile change has finished.
+        Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates the administrator disabled
+            sign in with the specified identity provider.
+        + `FIRAuthErrorCodeRequiresRecentLogin` - Updating a user’s password is a security
+            sensitive operation that requires a recent login from the user. This error indicates
+            the user has not signed in recently enough. To resolve, reauthenticate the user by
+            invoking reauthenticateWithCredential:completion: on FIRUser.
+        + `FIRAuthErrorCodeWeakPassword` - Indicates an attempt to set a password that is
+            considered too weak. The NSLocalizedFailureReasonErrorKey field in the NSError.userInfo
+            dictionary object will contain more detailed explanation that can be shown to the user.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)updatePassword:(NSString *)password
+            completion:(nullable void (^)(NSError *_Nullable error))completion
+    NS_SWIFT_NAME(updatePassword(to:completion:));
+
+/** @fn updatePhoneNumberCredential:completion:
+    @brief Updates the phone number for the user. On success, the cached user profile data is
+        updated.
+        This method is available on iOS only.
+
+    @param phoneNumberCredential The new phone number credential corresponding to the phone number
+        to be added to the Firebase account, if a phone number is already linked to the account this
+        new phone number will replace it.
+    @param completion Optionally; the block invoked when the user profile change has finished.
+        Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeRequiresRecentLogin` - Updating a user’s phone number is a security
+            sensitive operation that requires a recent login from the user. This error indicates
+            the user has not signed in recently enough. To resolve, reauthenticate the user by
+            invoking reauthenticateWithCredential:completion: on FIRUser.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)updatePhoneNumberCredential:(FIRPhoneAuthCredential *)phoneNumberCredential
+                         completion:(nullable void (^)(NSError *_Nullable error))completion
+    API_UNAVAILABLE(macos, tvos, watchos);
+
+/** @fn profileChangeRequest
+    @brief Creates an object which may be used to change the user's profile data.
+
+    @remarks Set the properties of the returned object, then call
+        `FIRUserProfileChangeRequest.commitChangesWithCallback:` to perform the updates atomically.
+
+    @return An object which may be used to change the user's profile data atomically.
+ */
+- (FIRUserProfileChangeRequest *)profileChangeRequest NS_SWIFT_NAME(createProfileChangeRequest());
+
+/** @fn reloadWithCompletion:
+    @brief Reloads the user's profile data from the server.
+
+    @param completion Optionally; the block invoked when the reload has finished. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks May fail with a `FIRAuthErrorCodeRequiresRecentLogin` error code. In this case
+        you should call `FIRUser.reauthenticateWithCredential:completion:` before re-invoking
+        `FIRUser.updateEmail:completion:`.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)reloadWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn reauthenticateWithCredential:completion:
+    @brief Renews the user's authentication tokens by validating a fresh set of credentials supplied
+        by the user  and returns additional identity provider data.
+
+    @param credential A user-supplied credential, which will be validated by the server. This can be
+        a successful third-party identity provider sign-in, or an email address and password.
+    @param completion Optionally; the block invoked when the re-authentication operation has
+        finished. Invoked asynchronously on the main thread in the future.
+
+    @remarks If the user associated with the supplied credential is different from the current user,
+        or if the validation of the supplied credentials fails; an error is returned and the current
+        user remains signed in.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidCredential` - Indicates the supplied credential is invalid.
+            This could happen if it has expired or it is malformed.
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that accounts with the
+            identity provider represented by the credential are not enabled. Enable them in the
+            Auth section of the Firebase console.
+        + `FIRAuthErrorCodeEmailAlreadyInUse` -  Indicates the email asserted by the credential
+            (e.g. the email in a Facebook access token) is already in use by an existing account,
+            that cannot be authenticated with this method. Call fetchProvidersForEmail for
+            this user’s email and then prompt them to sign in with any of the sign-in providers
+            returned. This error will only be thrown if the "One account per email address"
+            setting is enabled in the Firebase console, under Auth settings. Please note that the
+            error code raised in this specific situation may not be the same on Web and Android.
+        + `FIRAuthErrorCodeUserDisabled` - Indicates the user's account is disabled.
+        + `FIRAuthErrorCodeWrongPassword` - Indicates the user attempted reauthentication with
+            an incorrect password, if credential is of the type EmailPasswordAuthCredential.
+        + `FIRAuthErrorCodeUserMismatch` -  Indicates that an attempt was made to
+            reauthenticate with a user which is not the current user.
+        + `FIRAuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)reauthenticateWithCredential:(FIRAuthCredential *)credential
+                          completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                                        NSError *_Nullable error))completion;
+
+/** @fn reauthenticateWithProvider:UIDelegate:completion:
+    @brief Renews the user's authentication using the provided auth provider instance.
+        This method is available on iOS, macOS Catalyst, and tvOS only.
+
+    @param provider An instance of an auth provider used to initiate the reauthenticate flow.
+    @param UIDelegate Optionally an instance of a class conforming to the FIRAuthUIDelegate
+        protocol, this is used for presenting the web context. If nil, a default FIRAuthUIDelegate
+        will be used.
+    @param completion Optionally; a block which is invoked when the reauthenticate flow finishes, or
+        is canceled. Invoked asynchronously on the main thread in the future.
+ */
+- (void)reauthenticateWithProvider:(id<FIRFederatedAuthProvider>)provider
+                        UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                        completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                                      NSError *_Nullable error))completion
+    NS_SWIFT_NAME(reauthenticate(with:uiDelegate:completion:))API_UNAVAILABLE(macosx, watchos);
+
+/** @fn getIDTokenResultWithCompletion:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+
+    @param completion Optionally; the block invoked when the token is available. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)getIDTokenResultWithCompletion:(nullable void (^)(FIRAuthTokenResult *_Nullable tokenResult,
+                                                          NSError *_Nullable error))completion
+    NS_SWIFT_NAME(getIDTokenResult(completion:));
+
+/** @fn getIDTokenResultForcingRefresh:completion:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+
+    @param forceRefresh Forces a token refresh. Useful if the token becomes invalid for some reason
+        other than an expiration.
+    @param completion Optionally; the block invoked when the token is available. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks The authentication token will be refreshed (by making a network request) if it has
+        expired, or if `forceRefresh` is YES.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)getIDTokenResultForcingRefresh:(BOOL)forceRefresh
+                            completion:(nullable void (^)(FIRAuthTokenResult *_Nullable tokenResult,
+                                                          NSError *_Nullable error))completion
+    NS_SWIFT_NAME(getIDTokenResult(forcingRefresh:completion:));
+
+/** @fn getIDTokenWithCompletion:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+
+    @param completion Optionally; the block invoked when the token is available. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)getIDTokenWithCompletion:
+    (nullable void (^)(NSString *_Nullable token, NSError *_Nullable error))completion
+    NS_SWIFT_NAME(getIDToken(completion:));
+
+/** @fn getIDTokenForcingRefresh:completion:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+
+    @param forceRefresh Forces a token refresh. Useful if the token becomes invalid for some reason
+        other than an expiration.
+    @param completion Optionally; the block invoked when the token is available. Invoked
+        asynchronously on the main thread in the future.
+
+    @remarks The authentication token will be refreshed (by making a network request) if it has
+        expired, or if `forceRefresh` is YES.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all API methods.
+ */
+- (void)getIDTokenForcingRefresh:(BOOL)forceRefresh
+                      completion:(nullable void (^)(NSString *_Nullable token,
+                                                    NSError *_Nullable error))completion;
+
+/** @fn linkWithCredential:completion:
+    @brief Associates a user account from a third-party identity provider with this user and
+        returns additional identity provider data.
+
+    @param credential The credential for the identity provider.
+    @param completion Optionally; the block invoked when the unlinking is complete, or fails.
+        Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeProviderAlreadyLinked` - Indicates an attempt to link a provider of a
+            type already linked to this account.
+        + `FIRAuthErrorCodeCredentialAlreadyInUse` - Indicates an attempt to link with a
+            credential that has already been linked with a different Firebase account.
+        + `FIRAuthErrorCodeOperationNotAllowed` - Indicates that accounts with the identity
+            provider represented by the credential are not enabled. Enable them in the Auth section
+            of the Firebase console.
+
+    @remarks This method may also return error codes associated with updateEmail:completion: and
+        updatePassword:completion: on FIRUser.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)linkWithCredential:(FIRAuthCredential *)credential
+                completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                              NSError *_Nullable error))completion;
+
+/** @fn linkWithProvider:UIDelegate:completion:
+    @brief link the user with the provided auth provider instance.
+        This method is available on iOS, macOS Catalyst, and tvOS only.
+
+    @param provider An instance of an auth provider used to initiate the link flow.
+    @param UIDelegate Optionally an instance of a class conforming to the FIRAuthUIDelegate
+        protocol, this is used for presenting the web context. If nil, a default FIRAuthUIDelegate
+        will be used.
+    @param completion Optionally; a block which is invoked when the link flow finishes, or
+        is canceled. Invoked asynchronously on the main thread in the future.
+ */
+- (void)linkWithProvider:(id<FIRFederatedAuthProvider>)provider
+              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+              completion:(nullable void (^)(FIRAuthDataResult *_Nullable authResult,
+                                            NSError *_Nullable error))completion
+    NS_SWIFT_NAME(link(with:uiDelegate:completion:))API_UNAVAILABLE(macosx, watchos);
+
+/** @fn unlinkFromProvider:completion:
+    @brief Disassociates a user account from a third-party identity provider with this user.
+
+    @param provider The provider ID of the provider to unlink.
+    @param completion Optionally; the block invoked when the unlinking is complete, or fails.
+        Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeNoSuchProvider` - Indicates an attempt to unlink a provider
+            that is not linked to the account.
+        + `FIRAuthErrorCodeRequiresRecentLogin` - Updating email is a security sensitive
+            operation that requires a recent login from the user. This error indicates the user
+            has not signed in recently enough. To resolve, reauthenticate the user by invoking
+            reauthenticateWithCredential:completion: on FIRUser.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)unlinkFromProvider:(NSString *)provider
+                completion:(nullable void (^)(FIRUser *_Nullable user,
+                                              NSError *_Nullable error))completion;
+
+/** @fn sendEmailVerificationWithCompletion:
+    @brief Initiates email verification for the user.
+
+    @param completion Optionally; the block invoked when the request to send an email verification
+        is complete, or fails. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
+            sent in the request.
+        + `FIRAuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
+            the console for this action.
+        + `FIRAuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
+            sending update email.
+        + `FIRAuthErrorCodeUserNotFound` - Indicates the user account was not found.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+ */
+- (void)sendEmailVerificationWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendEmailVerificationWithActionCodeSettings:completion:
+    @brief Initiates email verification for the user.
+
+    @param actionCodeSettings An `FIRActionCodeSettings` object containing settings related to
+        handling action codes.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
+            sent in the request.
+        + `FIRAuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
+            the console for this action.
+        + `FIRAuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
+            sending update email.
+        + `FIRAuthErrorCodeUserNotFound` - Indicates the user account was not found.
+        + `FIRAuthErrorCodeMissingIosBundleID` - Indicates that the iOS bundle ID is missing when
+            a iOS App Store ID is provided.
+        + `FIRAuthErrorCodeMissingAndroidPackageName` - Indicates that the android package name
+            is missing when the `androidInstallApp` flag is set to true.
+        + `FIRAuthErrorCodeUnauthorizedDomain` - Indicates that the domain specified in the
+            continue URL is not allowlisted in the Firebase console.
+        + `FIRAuthErrorCodeInvalidContinueURI` - Indicates that the domain specified in the
+            continue URI is not valid.
+ */
+- (void)sendEmailVerificationWithActionCodeSettings:(FIRActionCodeSettings *)actionCodeSettings
+                                         completion:(nullable void (^)(NSError *_Nullable error))
+                                                        completion;
+
+/** @fn deleteWithCompletion:
+    @brief Deletes the user account (also signs out the user, if this was the current user).
+
+    @param completion Optionally; the block invoked when the request to delete the account is
+        complete, or fails. Invoked asynchronously on the main thread in the future.
+
+    @remarks Possible error codes:
+
+        + `FIRAuthErrorCodeRequiresRecentLogin` - Updating email is a security sensitive
+            operation that requires a recent login from the user. This error indicates the user
+            has not signed in recently enough. To resolve, reauthenticate the user by invoking
+            reauthenticateWithCredential:completion: on FIRUser.
+
+    @remarks See `FIRAuthErrors` for a list of error codes that are common to all FIRUser methods.
+
+ */
+- (void)deleteWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendEmailVerificationBeforeUpdatingEmail:completion:
+    @brief Send an email to verify the ownership of the account then update to the new email.
+    @param email The email to be updated to.
+    @param completion Optionally; the block invoked when the request to send the verification
+        email is complete, or fails.
+*/
+- (void)sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
+                                      completion:
+                                          (nullable void (^)(NSError *_Nullable error))completion;
+
+/** @fn sendEmailVerificationBeforeUpdatingEmail:completion:
+    @brief Send an email to verify the ownership of the account then update to the new email.
+    @param email The email to be updated to.
+    @param actionCodeSettings An `FIRActionCodeSettings` object containing settings related to
+        handling action codes.
+    @param completion Optionally; the block invoked when the request to send the verification
+        email is complete, or fails.
+*/
+- (void)sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
+                              actionCodeSettings:(nonnull FIRActionCodeSettings *)actionCodeSettings
+                                      completion:
+                                          (nullable void (^)(NSError *_Nullable error))completion;
+
+@end
+
+/** @class FIRUserProfileChangeRequest
+    @brief Represents an object capable of updating a user's profile data.
+    @remarks Properties are marked as being part of a profile update when they are set. Setting a
+        property value to nil is not the same as leaving the property unassigned.
+ */
+NS_SWIFT_NAME(UserProfileChangeRequest)
+@interface FIRUserProfileChangeRequest : NSObject
+
+/** @fn init
+    @brief Please use `FIRUser.profileChangeRequest`
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @property displayName
+    @brief The user's display name.
+    @remarks It is an error to set this property after calling
+        `FIRUserProfileChangeRequest.commitChangesWithCallback:`
+ */
+@property(nonatomic, copy, nullable) NSString *displayName;
+
+/** @property photoURL
+    @brief The user's photo URL.
+    @remarks It is an error to set this property after calling
+        `FIRUserProfileChangeRequest.commitChangesWithCallback:`
+ */
+@property(nonatomic, copy, nullable) NSURL *photoURL;
+
+/** @fn commitChangesWithCompletion:
+    @brief Commits any pending changes.
+    @remarks This method should only be called once. Once called, property values should not be
+        changed.
+
+    @param completion Optionally; the block invoked when the user profile change has been applied.
+        Invoked asynchronously on the main thread in the future.
+ */
+- (void)commitChangesWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserInfo.h
new file mode 100644
index 0000000..04eca49
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserInfo.h	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief Represents user data returned from an identity provider.
+ */
+NS_SWIFT_NAME(UserInfo)
+@protocol FIRUserInfo <NSObject>
+
+/** @property providerID
+    @brief The provider identifier.
+ */
+@property(nonatomic, copy, readonly) NSString *providerID;
+
+/** @property uid
+    @brief The provider's user ID for the user.
+ */
+@property(nonatomic, copy, readonly) NSString *uid;
+
+/** @property displayName
+    @brief The name of the user.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *displayName;
+
+/** @property photoURL
+    @brief The URL of the user's profile photo.
+ */
+@property(nonatomic, copy, readonly, nullable) NSURL *photoURL;
+
+/** @property email
+    @brief The user's email address.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *email;
+
+/** @property phoneNumber
+    @brief A phone number associated with the user.
+    @remarks This property is only available for users authenticated via phone number auth.
+ */
+@property(nonatomic, readonly, nullable) NSString *phoneNumber;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserMetadata.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserMetadata.h
new file mode 100644
index 0000000..3ceae38
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserMetadata.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRUserMetadata
+    @brief A data class representing the metadata corresponding to a Firebase user.
+ */
+NS_SWIFT_NAME(UserMetadata)
+@interface FIRUserMetadata : NSObject
+
+/** @property lastSignInDate
+    @brief Stores the last sign in date for the corresponding Firebase user.
+ */
+@property(copy, nonatomic, readonly, nullable) NSDate *lastSignInDate;
+
+/** @property creationDate
+    @brief Stores the creation date for the corresponding Firebase user.
+ */
+@property(copy, nonatomic, readonly, nullable) NSDate *creationDate;
+
+/** @fn init
+    @brief This class should not be initialized manually, an instance of this class can be obtained
+        from a Firebase user object.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FirebaseAuth.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FirebaseAuth.h
new file mode 100644
index 0000000..3d922b2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Public/FirebaseAuth/FirebaseAuth.h	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRActionCodeSettings.h"
+#import "FIRAdditionalUserInfo.h"
+#import "FIRAuth.h"
+#import "FIRAuthCredential.h"
+#import "FIRAuthDataResult.h"
+#import "FIRAuthErrors.h"
+#import "FIRAuthTokenResult.h"
+#import "FIREmailAuthProvider.h"
+#import "FIRFacebookAuthProvider.h"
+#import "FIRFederatedAuthProvider.h"
+#import "FIRGameCenterAuthProvider.h"
+#import "FIRGitHubAuthProvider.h"
+#import "FIRGoogleAuthProvider.h"
+#import "FIRMultiFactor.h"
+#import "FIRMultiFactorAssertion.h"
+#import "FIRMultiFactorInfo.h"
+#import "FIRMultiFactorResolver.h"
+#import "FIRMultiFactorSession.h"
+#import "FIROAuthCredential.h"
+#import "FIROAuthProvider.h"
+#import "FIRTwitterAuthProvider.h"
+#import "FIRUser.h"
+#import "FIRUserInfo.h"
+#import "FIRUserMetadata.h"
+
+#import "FIRAuthAPNSTokenType.h"
+#import "FIRAuthSettings.h"
+#import "FIRAuthUIDelegate.h"
+#import "FIRPhoneAuthCredential.h"
+#import "FIRPhoneAuthProvider.h"
+#import "FIRPhoneMultiFactorAssertion.h"
+#import "FIRPhoneMultiFactorGenerator.h"
+#import "FIRPhoneMultiFactorInfo.h"
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h
new file mode 100644
index 0000000..ff7c05d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h	
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+    @brief The protocol for permanant data storage.
+ */
+@protocol FIRAuthStorage <NSObject>
+
+/** @fn initWithService:
+    @brief Initialize a @c FIRAuthStorage instance.
+    @param service The name of the storage service to use.
+    @return An initialized @c FIRAuthStorage instance for the specified service.
+ */
+- (id<FIRAuthStorage>)initWithService:(NSString *)service;
+
+/** @fn dataForKey:error:
+    @brief Gets the data for @c key in the storage. The key is set for the attribute
+        @c kSecAttrAccount of a generic password query.
+    @param key The key to use.
+    @param error The address to store any error that occurs during the process, if not NULL.
+        If the operation was successful, its content is set to @c nil .
+    @return The data stored in the storage for @c key, if any.
+ */
+- (nullable NSData *)dataForKey:(NSString *)key error:(NSError **_Nullable)error;
+
+/** @fn setData:forKey:error:
+    @brief Sets the data for @c key in the storage. The key is set for the attribute
+        @c kSecAttrAccount of a generic password query.
+    @param data The data to store.
+    @param key The key to use.
+    @param error The address to store any error that occurs during the process, if not NULL.
+    @return Whether the operation succeeded or not.
+ */
+- (BOOL)setData:(NSData *)data forKey:(NSString *)key error:(NSError **_Nullable)error;
+
+/** @fn removeDataForKey:error:
+    @brief Removes the data for @c key in the storage. The key is set for the attribute
+        @c kSecAttrAccount of a generic password query.
+    @param key The key to use.
+    @param error The address to store any error that occurs during the process, if not NULL.
+    @return Whether the operation succeeded or not.
+ */
+- (BOOL)removeDataForKey:(NSString *)key error:(NSError **_Nullable)error;
+
+@end
+
+/** @class FIRAuthKeychain
+    @brief The utility class to manipulate data in iOS Keychain.
+ */
+@interface FIRAuthKeychainServices : NSObject <FIRAuthStorage>
+
+/** @fn getItemWithQuery:error:
+    @brief Get the item from keychain by given query.
+    @param query The query to query the keychain.
+    @param outError The address to store any error that occurs during the process, if not nil.
+    @return The item of the given query. nil if not exsit.
+ */
+- (nullable NSData *)getItemWithQuery:(NSDictionary *)query
+                                error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn setItem:withQuery:error:
+    @brief Set the item into keychain with given query.
+    @param item The item to be added into keychain.
+    @param query The query to query the keychain.
+    @param outError The address to store any error that occurs during the process, if not nil.
+    @return Whether the operation succeed.
+ */
+- (BOOL)setItem:(NSData *)item
+      withQuery:(NSDictionary *)query
+          error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn getItemWithQuery:error:
+    @brief Remove the item with given queryfrom keychain.
+    @param query The query to query the keychain.
+    @param outError The address to store any error that occurs during the process, if not nil.
+    @return Whether the operation succeed.
+ */
+- (BOOL)removeItemWithQuery:(NSDictionary *)query error:(NSError *_Nullable *_Nullable)outError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.m
new file mode 100644
index 0000000..ec657df
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.m	
@@ -0,0 +1,342 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+
+#import <Security/Security.h>
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+/** @var kAccountPrefix
+    @brief The prefix string for keychain item account attribute before the key.
+    @remarks A number "1" is encoded in the prefix in case we need to upgrade the scheme in future.
+ */
+static NSString *const kAccountPrefix = @"firebase_auth_1_";
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthKeychainServices {
+  /** @var _service
+      @brief The name of the keychain service.
+   */
+  NSString *_service;
+
+  /** @var _legacyItemDeletedForKey
+      @brief Indicates whether or not this class knows that the legacy item for a particular key has
+          been deleted.
+      @remarks This dictionary is to avoid unecessary keychain operations against legacy items.
+   */
+  NSMutableDictionary *_legacyEntryDeletedForKey;
+}
+
+- (id<FIRAuthStorage>)initWithService:(NSString *)service {
+  self = [super init];
+  if (self) {
+    _service = [service copy];
+    _legacyEntryDeletedForKey = [[NSMutableDictionary alloc] init];
+  }
+  return self;
+}
+
+- (nullable NSData *)dataForKey:(NSString *)key error:(NSError **_Nullable)error {
+  if (!key.length) {
+    [NSException raise:NSInvalidArgumentException format:@"%@", @"The key cannot be nil or empty."];
+    return nil;
+  }
+  NSData *data = [self itemWithQuery:[self genericPasswordQueryWithKey:key] error:error];
+  if (error && *error) {
+    return nil;
+  }
+  if (data) {
+    return data;
+  }
+  // Check for legacy form.
+  if (_legacyEntryDeletedForKey[key]) {
+    return nil;
+  }
+  data = [self itemWithQuery:[self legacyGenericPasswordQueryWithKey:key] error:error];
+  if (error && *error) {
+    return nil;
+  }
+  if (!data) {
+    // Mark legacy data as non-existing so we don't have to query it again.
+    _legacyEntryDeletedForKey[key] = @YES;
+    return nil;
+  }
+  // Move the data to current form.
+  if (![self setData:data forKey:key error:error]) {
+    return nil;
+  }
+  [self deleteLegacyItemWithKey:key];
+  return data;
+}
+
+- (BOOL)setData:(NSData *)data forKey:(NSString *)key error:(NSError **_Nullable)error {
+  if (!key.length) {
+    [NSException raise:NSInvalidArgumentException format:@"%@", @"The key cannot be nil or empty."];
+    return NO;
+  }
+  NSDictionary *attributes = @{
+    (__bridge id)kSecValueData : data,
+    (__bridge id)kSecAttrAccessible : (__bridge id)kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly,
+  };
+  return [self setItemWithQuery:[self genericPasswordQueryWithKey:key]
+                     attributes:attributes
+                          error:error];
+}
+
+- (BOOL)removeDataForKey:(NSString *)key error:(NSError **_Nullable)error {
+  if (!key.length) {
+    [NSException raise:NSInvalidArgumentException format:@"%@", @"The key cannot be nil or empty."];
+    return NO;
+  }
+  if (![self deleteItemWithQuery:[self genericPasswordQueryWithKey:key] error:error]) {
+    return NO;
+  }
+  // Legacy form item, if exists, also needs to be removed, otherwise it will be exposed when
+  // current form item is removed, leading to incorrect semantics.
+  [self deleteLegacyItemWithKey:key];
+  return YES;
+}
+
+#pragma mark - Private methods for non-sharing keychain operations
+
+- (nullable NSData *)itemWithQuery:(NSDictionary *)query error:(NSError **_Nullable)error {
+  NSMutableDictionary *returningQuery = [query mutableCopy];
+  returningQuery[(__bridge id)kSecReturnData] = @YES;
+  returningQuery[(__bridge id)kSecReturnAttributes] = @YES;
+  // Using a match limit of 2 means that we can check whether there is more than one item.
+  // If we used a match limit of 1 we would never find out.
+  returningQuery[(__bridge id)kSecMatchLimit] = @2;
+
+  CFArrayRef result = NULL;
+  OSStatus status =
+      SecItemCopyMatching((__bridge CFDictionaryRef)returningQuery, (CFTypeRef *)&result);
+
+  if (status == noErr && result != NULL) {
+    NSArray *items = (__bridge_transfer NSArray *)result;
+    if (items.count == 0) {
+      if (error) {
+        // The keychain query returned no error, but there were no items found.
+        *error = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemCopyMatching" status:status];
+      }
+      return nil;
+    } else if (items.count > 1) {
+      // More than one keychain item was found, all but the first will be ignored.
+      FIRLogWarning(
+          kFIRLoggerAuth, @"I-AUT000005",
+          @"Keychain query returned multiple results, all but the first will be ignored: %@",
+          items);
+    }
+
+    if (error) {
+      *error = nil;
+    }
+    // Return the non-legacy item.
+    for (NSDictionary *item in items) {
+      if (item[(__bridge NSString *)kSecAttrService] != nil) {
+        return item[(__bridge id)kSecValueData];
+      }
+    }
+
+    // If they were all legacy items, just return the first one.
+    // This should not happen, since only one account should be
+    // stored.
+    return items[0][(__bridge id)kSecValueData];
+  }
+
+  if (status == errSecItemNotFound) {
+    if (error) {
+      *error = nil;
+    }
+  } else {
+    if (error) {
+      *error = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemCopyMatching" status:status];
+    }
+  }
+  return nil;
+}
+
+- (BOOL)setItemWithQuery:(NSDictionary *)query
+              attributes:(NSDictionary *)attributes
+                   error:(NSError **_Nullable)error {
+  NSMutableDictionary *combined = [attributes mutableCopy];
+  [combined addEntriesFromDictionary:query];
+  BOOL hasItem = NO;
+  OSStatus status = SecItemAdd((__bridge CFDictionaryRef)combined, NULL);
+
+  if (status == errSecDuplicateItem) {
+    hasItem = YES;
+    status = SecItemUpdate((__bridge CFDictionaryRef)query, (__bridge CFDictionaryRef)attributes);
+  }
+
+  if (status == noErr) {
+    return YES;
+  }
+  if (error) {
+    NSString *function = hasItem ? @"SecItemUpdate" : @"SecItemAdd";
+    *error = [FIRAuthErrorUtils keychainErrorWithFunction:function status:status];
+  }
+  return NO;
+}
+
+- (BOOL)deleteItemWithQuery:(NSDictionary *)query error:(NSError **_Nullable)error {
+  OSStatus status = SecItemDelete((__bridge CFDictionaryRef)query);
+  if (status == noErr || status == errSecItemNotFound) {
+    return YES;
+  }
+  if (error) {
+    *error = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemDelete" status:status];
+  }
+  return NO;
+}
+
+/** @fn deleteLegacyItemsWithKey:
+    @brief Deletes legacy item from the keychain if it is not already known to be deleted.
+    @param key The key for the item.
+ */
+- (void)deleteLegacyItemWithKey:(NSString *)key {
+  if (_legacyEntryDeletedForKey[key]) {
+    return;
+  }
+  NSDictionary *query = [self legacyGenericPasswordQueryWithKey:key];
+  SecItemDelete((__bridge CFDictionaryRef)query);
+  _legacyEntryDeletedForKey[key] = @YES;
+}
+
+/** @fn genericPasswordQueryWithKey:
+    @brief Returns a keychain query of generic password to be used to manipulate key'ed value.
+    @param key The key for the value being manipulated, used as the account field in the query.
+ */
+- (NSDictionary *)genericPasswordQueryWithKey:(NSString *)key {
+  return @{
+    (__bridge id)kSecClass : (__bridge id)kSecClassGenericPassword,
+    (__bridge id)kSecAttrAccount : [kAccountPrefix stringByAppendingString:key],
+    (__bridge id)kSecAttrService : _service,
+  };
+}
+
+/** @fn legacyGenericPasswordQueryWithKey:
+    @brief Returns a keychain query of generic password without service field, which is used by
+        previous version of this class.
+    @param key The key for the value being manipulated, used as the account field in the query.
+ */
+- (NSDictionary *)legacyGenericPasswordQueryWithKey:(NSString *)key {
+  return @{
+    (__bridge id)kSecClass : (__bridge id)kSecClassGenericPassword,
+    (__bridge id)kSecAttrAccount : key,
+  };
+}
+
+#pragma mark - Private methods for shared keychain operations
+
+- (nullable NSData *)getItemWithQuery:(NSDictionary *)query
+                                error:(NSError *_Nullable *_Nullable)outError {
+  NSMutableDictionary *mutableQuery = [query mutableCopy];
+
+  mutableQuery[(__bridge id)kSecReturnData] = @YES;
+  mutableQuery[(__bridge id)kSecReturnAttributes] = @YES;
+  mutableQuery[(__bridge id)kSecMatchLimit] = @2;
+
+  CFArrayRef result = NULL;
+  OSStatus status =
+      SecItemCopyMatching((__bridge CFDictionaryRef)mutableQuery, (CFTypeRef *)&result);
+
+  if (status == noErr && result != NULL) {
+    NSArray *items = (__bridge_transfer NSArray *)result;
+    if (items.count != 1) {
+      if (outError) {
+        *outError = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemCopyMatching"
+                                                          status:status];
+      }
+      return nil;
+    }
+
+    if (outError) {
+      *outError = nil;
+    }
+    NSDictionary *item = items[0];
+    return item[(__bridge id)kSecValueData];
+  }
+
+  if (status == errSecItemNotFound) {
+    if (outError) {
+      *outError = nil;
+    }
+  } else {
+    if (outError) {
+      *outError = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemCopyMatching"
+                                                        status:status];
+    }
+  }
+  return nil;
+}
+
+- (BOOL)setItem:(NSData *)item
+      withQuery:(NSDictionary *)query
+          error:(NSError *_Nullable *_Nullable)outError {
+  NSData *existingItem = [self getItemWithQuery:query error:outError];
+  if (outError && *outError) {
+    return NO;
+  }
+
+  OSStatus status;
+  if (!existingItem) {
+    NSMutableDictionary *queryWithItem = [query mutableCopy];
+    [queryWithItem setObject:item forKey:(__bridge id)kSecValueData];
+    status = SecItemAdd((__bridge CFDictionaryRef)queryWithItem, NULL);
+  } else {
+    NSDictionary *attributes = @{(__bridge id)kSecValueData : item};
+    status = SecItemUpdate((__bridge CFDictionaryRef)query, (__bridge CFDictionaryRef)attributes);
+  }
+
+  if (status == noErr) {
+    if (outError) {
+      *outError = nil;
+    }
+    return YES;
+  }
+
+  NSString *function = existingItem ? @"SecItemUpdate" : @"SecItemAdd";
+  if (outError) {
+    *outError = [FIRAuthErrorUtils keychainErrorWithFunction:function status:status];
+  }
+  return NO;
+}
+
+- (BOOL)removeItemWithQuery:(NSDictionary *)query error:(NSError *_Nullable *_Nullable)outError {
+  OSStatus status = SecItemDelete((__bridge CFDictionaryRef)query);
+
+  if (status == noErr || status == errSecItemNotFound) {
+    if (outError) {
+      *outError = nil;
+    }
+    return YES;
+  }
+
+  if (outError) {
+    *outError = [FIRAuthErrorUtils keychainErrorWithFunction:@"SecItemDelete" status:status];
+  }
+  return NO;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h
new file mode 100644
index 0000000..dfd8aad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthUserDefaults
+    @brief The utility class to storage data in NSUserDefaults.
+ */
+@interface FIRAuthUserDefaults : NSObject <FIRAuthStorage>
+
+/** @fn clear
+    @brief Clears all data from the storage.
+    @remarks This method is only supposed to be called from tests.
+ */
+- (void)clear;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.m
new file mode 100644
index 0000000..b109450
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.m	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *const kPersistentDomainNamePrefix = @"com.google.Firebase.Auth.";
+
+@implementation FIRAuthUserDefaults {
+  /** @var _persistentDomainName
+      @brief The name of the persistent domain in user defaults.
+   */
+  NSString *_persistentDomainName;
+
+  /** @var _storage
+      @brief The backing NSUserDefaults storage for this instance.
+   */
+  NSUserDefaults *_storage;
+}
+
+- (instancetype)initWithService:(NSString *)service {
+  self = [super init];
+  if (self) {
+    _persistentDomainName = [kPersistentDomainNamePrefix stringByAppendingString:service];
+    _storage = [[NSUserDefaults alloc] init];
+  }
+  return self;
+}
+
+- (nullable NSData *)dataForKey:(NSString *)key error:(NSError **_Nullable)error {
+  if (error) {
+    *error = nil;
+  }
+  NSDictionary<NSString *, id> *allData = [_storage persistentDomainForName:_persistentDomainName];
+  return allData[key];
+}
+
+- (BOOL)setData:(NSData *)data forKey:(NSString *)key error:(NSError **_Nullable)error {
+  NSMutableDictionary<NSString *, id> *allData =
+      [([_storage persistentDomainForName:_persistentDomainName] ?: @{}) mutableCopy];
+  allData[key] = data;
+  [_storage setPersistentDomain:allData forName:_persistentDomainName];
+  return YES;
+}
+
+- (BOOL)removeDataForKey:(NSString *)key error:(NSError **_Nullable)error {
+  NSMutableDictionary<NSString *, id> *allData =
+      [[_storage persistentDomainForName:_persistentDomainName] mutableCopy];
+  [allData removeObjectForKey:key];
+  [_storage setPersistentDomain:allData forName:_persistentDomainName];
+  return YES;
+}
+
+- (void)clear {
+  [_storage setPersistentDomain:@{} forName:_persistentDomainName];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h
new file mode 100644
index 0000000..d06de11
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthAPNSTokenType.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthAPNSToken
+    @brief A data structure for an APNs token.
+ */
+@interface FIRAuthAPNSToken : NSObject
+
+/** @property data
+    @brief The APNs token data.
+ */
+@property(nonatomic, strong, readonly) NSData *data;
+
+/** @property string
+    @brief The uppercase hexadecimal string form of the APNs token data.
+ */
+@property(nonatomic, strong, readonly) NSString *string;
+
+/** @property type
+    @brief The APNs token type.
+ */
+@property(nonatomic, assign, readonly) FIRAuthAPNSTokenType type;
+
+/** @fn initWithData:type:
+    @brief Initializes the instance.
+    @param data The APNs token data.
+    @param type The APNs token type.
+    @return The initialized instance.
+ */
+- (instancetype)initWithData:(NSData *)data
+                        type:(FIRAuthAPNSTokenType)type NS_DESIGNATED_INITIALIZER;
+
+/** @fn init
+    @brief Call @c initWithData:type: to get an instance of this class.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.m
new file mode 100644
index 0000000..4937942
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.m	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX
+
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthAPNSToken {
+  /** @var _string
+      @brief The lazy-initialized string form of the token data.
+   */
+  NSString *_string;
+}
+
+- (instancetype)initWithData:(NSData *)data type:(FIRAuthAPNSTokenType)type {
+  self = [super init];
+  if (self) {
+    _data = [data copy];
+    _type = type;
+  }
+  return self;
+}
+
+- (NSString *)string {
+  if (!_string) {
+    NSUInteger capacity = _data.length * 2;
+    NSMutableString *tokenString = [NSMutableString stringWithCapacity:capacity];
+    const unsigned char *tokenData = _data.bytes;
+    for (int idx = 0; idx < _data.length; ++idx) {
+      [tokenString appendFormat:@"%02X", (int)tokenData[idx]];
+    }
+    _string = tokenString;
+  }
+  return _string;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h
new file mode 100644
index 0000000..c4e2cfb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h	
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+@class FIRAuthAPNSToken;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthAPNSTokenCallback
+    @brief The type of block to receive an APNs token.
+    @param token The APNs token if one is available.
+    @param error The error happened if any.
+    @remarks Both `token` and `error` being `nil` means the request timed-out.
+ */
+typedef void (^FIRAuthAPNSTokenCallback)(FIRAuthAPNSToken *_Nullable token,
+                                         NSError *_Nullable error);
+
+/** @class FIRAuthAPNSTokenManager
+    @brief A class to manage APNs token in memory.
+ */
+@interface FIRAuthAPNSTokenManager : NSObject
+
+/** @property token
+    @brief The APNs token, if one is available.
+    @remarks Setting a token with FIRAuthAPNSTokenTypeUnknown will automatically converts it to
+        a token with the automatically detected type.
+ */
+@property(nonatomic, strong, nullable) FIRAuthAPNSToken *token;
+
+/** @property timeout
+    @brief The timeout for registering for remote notification.
+    @remarks Only tests should access this property.
+ */
+@property(nonatomic, assign) NSTimeInterval timeout;
+
+/** @fn init
+    @brief Call @c initWithApplication: to initialize an instance of this class.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithApplication:
+    @brief Initializes the instance.
+    @param application The @c UIApplication to request the token from.
+    @return The initialized instance.
+ */
+- (instancetype)initWithApplication:(UIApplication *)application NS_DESIGNATED_INITIALIZER;
+
+/** @fn getTokenWithCallback:
+    @brief Attempts to get the APNs token.
+    @param callback The block to be called either immediately or in future, either when a token
+        becomes available, or when timeout occurs, whichever happens earlier.
+ */
+- (void)getTokenWithCallback:(FIRAuthAPNSTokenCallback)callback;
+
+/** @fn cancelWithError:
+    @brief Cancels any pending `getTokenWithCallback:` request.
+    @param error The error to return.
+ */
+- (void)cancelWithError:(NSError *)error;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.m
new file mode 100644
index 0000000..0daac97
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.m	
@@ -0,0 +1,250 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSToken.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAPNSTokenManager.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kRegistrationTimeout
+    @brief Timeout for registration for remote notification.
+    @remarks Once we start to handle `application:didFailToRegisterForRemoteNotificationsWithError:`
+        we probably don't have to use timeout at all.
+ */
+static const NSTimeInterval kRegistrationTimeout = 5;
+
+/** @var kLegacyRegistrationTimeout
+    @brief Timeout for registration for remote notification on iOS 7.
+ */
+static const NSTimeInterval kLegacyRegistrationTimeout = 30;
+
+@implementation FIRAuthAPNSTokenManager {
+  /** @var _application
+      @brief The @c UIApplication to request the token from.
+   */
+  UIApplication *_application;
+
+  /** @var _pendingCallbacks
+      @brief The list of all pending callbacks for the APNs token.
+   */
+  NSMutableArray<FIRAuthAPNSTokenCallback> *_pendingCallbacks;
+}
+
+- (instancetype)initWithApplication:(UIApplication *)application {
+  self = [super init];
+  if (self) {
+    _application = application;
+    _timeout = [_application respondsToSelector:@selector(registerForRemoteNotifications)]
+                   ? kRegistrationTimeout
+                   : kLegacyRegistrationTimeout;
+  }
+  return self;
+}
+
+- (void)getTokenWithCallback:(FIRAuthAPNSTokenCallback)callback {
+  if (_token) {
+    callback(_token, nil);
+    return;
+  }
+  if (_pendingCallbacks) {
+    [_pendingCallbacks addObject:callback];
+    return;
+  }
+  _pendingCallbacks =
+      [[NSMutableArray<FIRAuthAPNSTokenCallback> alloc] initWithObjects:callback, nil];
+  dispatch_async(dispatch_get_main_queue(), ^{
+    if ([self->_application respondsToSelector:@selector(registerForRemoteNotifications)]) {
+      [self->_application registerForRemoteNotifications];
+    } else {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#if TARGET_OS_IOS
+      [self->_application registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert];
+#endif  // TARGET_OS_IOS
+#pragma clang diagnostic pop
+    }
+  });
+  NSArray<FIRAuthAPNSTokenCallback> *applicableCallbacks = _pendingCallbacks;
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(_timeout * NSEC_PER_SEC)),
+                 FIRAuthGlobalWorkQueue(), ^{
+                   // Only cancel if the pending callbacks remain the same, i.e., not triggered yet.
+                   if (applicableCallbacks == self->_pendingCallbacks) {
+                     [self callBackWithToken:nil error:nil];
+                   }
+                 });
+}
+
+- (void)setToken:(nullable FIRAuthAPNSToken *)token {
+  if (!token) {
+    _token = nil;
+    return;
+  }
+  if (token.type == FIRAuthAPNSTokenTypeUnknown) {
+    static FIRAuthAPNSTokenType detectedTokenType = FIRAuthAPNSTokenTypeUnknown;
+    if (detectedTokenType == FIRAuthAPNSTokenTypeUnknown) {
+      detectedTokenType =
+          [[self class] isProductionApp] ? FIRAuthAPNSTokenTypeProd : FIRAuthAPNSTokenTypeSandbox;
+    }
+    token = [[FIRAuthAPNSToken alloc] initWithData:token.data type:detectedTokenType];
+  }
+  _token = token;
+  [self callBackWithToken:token error:nil];
+}
+
+- (void)cancelWithError:(NSError *)error {
+  [self callBackWithToken:nil error:error];
+}
+
+#pragma mark - Internal methods
+
+/** @fn callBack
+    @brief Calls back all pending callbacks with APNs token or error.
+    @param token The APNs token if one is available.
+    @param error The error occurred, if any.
+ */
+- (void)callBackWithToken:(nullable FIRAuthAPNSToken *)token error:(nullable NSError *)error {
+  if (!_pendingCallbacks) {
+    return;
+  }
+  NSArray<FIRAuthAPNSTokenCallback> *allCallbacks = _pendingCallbacks;
+  _pendingCallbacks = nil;
+  for (FIRAuthAPNSTokenCallback callback in allCallbacks) {
+    callback(token, error);
+  }
+};
+
+/** @fn isProductionApp
+    @brief Whether or not the app has production (versus sandbox) provisioning profile.
+ */
++ (BOOL)isProductionApp {
+  const BOOL defaultAppTypeProd = YES;
+
+  NSError *error = nil;
+
+  if ([GULAppEnvironmentUtil isSimulator]) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000006", @"Assuming prod APNs token type on simulator.");
+    return defaultAppTypeProd;
+  }
+
+  // Apps distributed via AppStore or TestFlight use the Production APNS certificates.
+  if ([GULAppEnvironmentUtil isFromAppStore]) {
+    return defaultAppTypeProd;
+  }
+  NSString *path = [[[NSBundle mainBundle] bundlePath]
+      stringByAppendingPathComponent:@"embedded.mobileprovision"];
+  if ([GULAppEnvironmentUtil isAppStoreReceiptSandbox] && !path.length) {
+    // Distributed via TestFlight
+    return defaultAppTypeProd;
+  }
+
+  NSMutableData *profileData = [NSMutableData dataWithContentsOfFile:path options:0 error:&error];
+
+  if (!profileData.length || error) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000007", @"Error while reading embedded mobileprovision %@",
+               error);
+    return defaultAppTypeProd;
+  }
+
+  // The "embedded.mobileprovision" sometimes contains characters with value 0, which signals the
+  // end of a c-string and halts the ASCII parser, or with value > 127, which violates strict 7-bit
+  // ASCII. Replace any 0s or invalid characters in the input.
+  uint8_t *profileBytes = (uint8_t *)profileData.bytes;
+  for (int i = 0; i < profileData.length; i++) {
+    uint8_t currentByte = profileBytes[i];
+    if (!currentByte || currentByte > 127) {
+      profileBytes[i] = '.';
+    }
+  }
+
+  NSString *embeddedProfile = [[NSString alloc] initWithBytesNoCopy:profileBytes
+                                                             length:profileData.length
+                                                           encoding:NSASCIIStringEncoding
+                                                       freeWhenDone:NO];
+
+  if (error || !embeddedProfile.length) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000008", @"Error while reading embedded mobileprovision %@",
+               error);
+    return defaultAppTypeProd;
+  }
+
+  NSScanner *scanner = [NSScanner scannerWithString:embeddedProfile];
+  NSString *plistContents;
+  if ([scanner scanUpToString:@"<plist" intoString:nil]) {
+    if ([scanner scanUpToString:@"</plist>" intoString:&plistContents]) {
+      plistContents = [plistContents stringByAppendingString:@"</plist>"];
+    }
+  }
+
+  if (!plistContents.length) {
+    return defaultAppTypeProd;
+  }
+
+  NSData *data = [plistContents dataUsingEncoding:NSUTF8StringEncoding];
+  if (!data.length) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000009",
+               @"Couldn't read plist fetched from embedded mobileprovision");
+    return defaultAppTypeProd;
+  }
+
+  NSError *plistMapError;
+  id plistData = [NSPropertyListSerialization propertyListWithData:data
+                                                           options:NSPropertyListImmutable
+                                                            format:nil
+                                                             error:&plistMapError];
+  if (plistMapError || ![plistData isKindOfClass:[NSDictionary class]]) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000010", @"Error while converting assumed plist to dict %@",
+               plistMapError.localizedDescription);
+    return defaultAppTypeProd;
+  }
+  NSDictionary *plistMap = (NSDictionary *)plistData;
+
+  if ([plistMap valueForKeyPath:@"ProvisionedDevices"]) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000011",
+               @"Provisioning profile has specifically provisioned devices, "
+               @"most likely a Dev profile.");
+  }
+
+  NSString *apsEnvironment = [plistMap valueForKeyPath:@"Entitlements.aps-environment"];
+  FIRLogDebug(kFIRLoggerAuth, @"I-AUT000012", @"APNS Environment in profile: %@", apsEnvironment);
+
+  // No aps-environment in the profile.
+  if (!apsEnvironment.length) {
+    FIRLogInfo(kFIRLoggerAuth, @"I-AUT000013",
+               @"No aps-environment set. If testing on a device APNS is not "
+               @"correctly configured. Please recheck your provisioning profiles.");
+    return defaultAppTypeProd;
+  }
+
+  if ([apsEnvironment isEqualToString:@"development"]) {
+    return NO;
+  }
+
+  return defaultAppTypeProd;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h
new file mode 100644
index 0000000..ceb93e2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthAppCredential
+    @brief A class represents a credential that proves the identity of the app.
+ */
+@interface FIRAuthAppCredential : NSObject <NSSecureCoding>
+
+/** @property receipt
+    @brief The server acknowledgement of receiving client's claim of identity.
+ */
+@property(nonatomic, strong, readonly) NSString *receipt;
+
+/** @property secret
+    @brief The secret that the client received from server via a trusted channel, if ever.
+ */
+@property(nonatomic, strong, readonly, nullable) NSString *secret;
+
+/** @fn initWithReceipt:secret:
+    @brief Initializes the instance.
+    @param receipt The server acknowledgement of receiving client's claim of identity.
+    @param secret The secret that the client received from server via a trusted channel, if ever.
+    @return The initialized instance.
+ */
+- (instancetype)initWithReceipt:(NSString *)receipt
+                         secret:(nullable NSString *)secret NS_DESIGNATED_INITIALIZER;
+
+/** @fn init
+    @brief Call @c initWithReceipt:secret: to get an instance of this class.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.m
new file mode 100644
index 0000000..7bf1021
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.m	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kReceiptKey
+    @brief The key used to encode the receipt property for NSSecureCoding.
+ */
+static NSString *const kReceiptKey = @"receipt";
+
+/** @var kSecretKey
+    @brief The key used to encode the secret property for NSSecureCoding.
+ */
+static NSString *const kSecretKey = @"secret";
+
+@implementation FIRAuthAppCredential
+
+- (instancetype)initWithReceipt:(NSString *)receipt secret:(nullable NSString *)secret {
+  self = [super init];
+  if (self) {
+    _receipt = [receipt copy];
+    _secret = [secret copy];
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *receipt = [aDecoder decodeObjectOfClass:[NSString class] forKey:kReceiptKey];
+  if (!receipt) {
+    return nil;
+  }
+  NSString *secret = [aDecoder decodeObjectOfClass:[NSString class] forKey:kSecretKey];
+  return [self initWithReceipt:receipt secret:secret];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_receipt forKey:kReceiptKey];
+  [aCoder encodeObject:_secret forKey:kSecretKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h
new file mode 100644
index 0000000..efbbe7a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h	
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthAppCredentialCallback
+    @brief The type of block to receive an app crdential.
+    @param credential The best available app credential at the time.
+ */
+typedef void (^FIRAuthAppCredentialCallback)(FIRAuthAppCredential *credential);
+
+/** @class FIRAuthAppCredentialManager
+    @brief A class to manage app credentials backed by iOS Keychain.
+ */
+@interface FIRAuthAppCredentialManager : NSObject
+
+/** @property credential
+    @brief The full credential (which has a secret) to be used by the app, if one is available.
+ */
+@property(nonatomic, strong, readonly, nullable) FIRAuthAppCredential *credential;
+
+/** @property maximumNumberOfPendingReceipts
+    @brief The maximum (but not necessarily the minimum) number of pending receipts to be kept.
+    @remarks Only tests should access this property.
+ */
+@property(nonatomic, assign, readonly) NSUInteger maximumNumberOfPendingReceipts;
+
+/** @fn init
+    @brief Call @c initWithKeychain: to initialize an instance of this class.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithKeychain:
+    @brief Initializes the instance.
+    @param keychain The iOS Keychain storage to back up the app credential with.
+    @return The initialized instance.
+ */
+- (instancetype)initWithKeychain:(FIRAuthKeychainServices *)keychain NS_DESIGNATED_INITIALIZER;
+
+/** @fn didStartVerificationWithReceipt:timeout:callback:
+    @brief Notifies that the app verification process has started.
+    @param receipt The receipt for verification.
+    @param timeout The timeout value for how long the callback is waited to be called.
+    @param callback The block to be called in future either when the verification finishes, or
+        when timeout occurs, whichever happens earlier.
+ */
+- (void)didStartVerificationWithReceipt:(NSString *)receipt
+                                timeout:(NSTimeInterval)timeout
+                               callback:(FIRAuthAppCredentialCallback)callback;
+
+/** @fn canFinishVerificationWithReceipt:
+    @brief Attempts to finish verification.
+    @param receipt The receipt to match the original receipt obtained when verification started.
+    @param secret The secret to complete the verification.
+    @return Whether or not the receipt matches a pending verification, and finishes verification
+        if it does.
+ */
+- (BOOL)canFinishVerificationWithReceipt:(NSString *)receipt secret:(NSString *)secret;
+
+/** @fn clearCredential
+    @brief Clears the saved credential, to be used in the case that it is rejected by the server.
+ */
+- (void)clearCredential;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.m
new file mode 100644
index 0000000..52673f0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.m	
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kKeychainDataKey
+    @brief The keychain key for the data.
+ */
+static NSString *const kKeychainDataKey = @"app_credentials";
+
+/** @var kFullCredentialKey
+    @brief The data key for the full app credential.
+ */
+static NSString *const kFullCredentialKey = @"full_credential";
+
+/** @var kPendingReceiptsKey
+    @brief The data key for the array of pending receipts.
+ */
+static NSString *const kPendingReceiptsKey = @"pending_receipts";
+
+/** @var kMaximumNumberOfPendingReceipts
+    @brief The maximum number of partial credentials kept by this class.
+ */
+static const NSUInteger kMaximumNumberOfPendingReceipts = 32;
+
+@implementation FIRAuthAppCredentialManager {
+  /** @var _keychainServices
+      @brief The keychain for app credentials to load from and to save to.
+   */
+  FIRAuthKeychainServices *_keychainServices;
+
+  /** @var _pendingReceipts
+      @brief A list of pending receipts sorted in the order they were recorded.
+   */
+  NSMutableArray<NSString *> *_pendingReceipts;
+
+  /** @var _callbacksByReceipt
+      @brief A map from pending receipts to callbacks.
+   */
+  NSMutableDictionary<NSString *, FIRAuthAppCredentialCallback> *_callbacksByReceipt;
+}
+
+- (instancetype)initWithKeychain:(FIRAuthKeychainServices *)keychain {
+  self = [super init];
+  if (self) {
+    _keychainServices = keychain;
+    // Load the credentials from keychain if possible.
+    NSError *error;
+    NSData *encodedData = [_keychainServices dataForKey:kKeychainDataKey error:&error];
+    if (!error && encodedData) {
+#if TARGET_OS_WATCH
+      NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingFromData:encodedData
+                                                                                  error:&error];
+#else
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      NSKeyedUnarchiver *unarchiver =
+          [[NSKeyedUnarchiver alloc] initForReadingWithData:encodedData];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+      FIRAuthAppCredential *credential =
+          [unarchiver decodeObjectOfClass:[FIRAuthAppCredential class] forKey:kFullCredentialKey];
+      if ([credential isKindOfClass:[FIRAuthAppCredential class]] && !error) {
+        _credential = credential;
+      }
+      NSSet<Class> *allowedClasses =
+          [NSSet<Class> setWithObjects:[NSArray class], [NSString class], nil];
+      NSArray<NSString *> *pendingReceipts = [unarchiver decodeObjectOfClasses:allowedClasses
+                                                                        forKey:kPendingReceiptsKey];
+      if ([pendingReceipts isKindOfClass:[NSArray class]]) {
+        _pendingReceipts = [pendingReceipts mutableCopy];
+      }
+    }
+    if (!_pendingReceipts) {
+      _pendingReceipts = [[NSMutableArray<NSString *> alloc] init];
+    }
+    _callbacksByReceipt =
+        [[NSMutableDictionary<NSString *, FIRAuthAppCredentialCallback> alloc] init];
+  }
+  return self;
+}
+
+- (NSUInteger)maximumNumberOfPendingReceipts {
+  return kMaximumNumberOfPendingReceipts;
+}
+
+- (void)didStartVerificationWithReceipt:(NSString *)receipt
+                                timeout:(NSTimeInterval)timeout
+                               callback:(FIRAuthAppCredentialCallback)callback {
+  [_pendingReceipts removeObject:receipt];
+  if (_pendingReceipts.count >= kMaximumNumberOfPendingReceipts) {
+    [_pendingReceipts removeObjectAtIndex:0];
+  }
+  [_pendingReceipts addObject:receipt];
+  _callbacksByReceipt[receipt] = callback;
+  [self saveData];
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeout * NSEC_PER_SEC)),
+                 FIRAuthGlobalWorkQueue(), ^{
+                   [self callBackWithReceipt:receipt];
+                 });
+}
+
+- (BOOL)canFinishVerificationWithReceipt:(NSString *)receipt secret:(NSString *)secret {
+  if (![_pendingReceipts containsObject:receipt]) {
+    return NO;
+  }
+  [_pendingReceipts removeObject:receipt];
+  _credential = [[FIRAuthAppCredential alloc] initWithReceipt:receipt secret:secret];
+  [self saveData];
+  [self callBackWithReceipt:receipt];
+  return YES;
+}
+
+- (void)clearCredential {
+  _credential = nil;
+  [self saveData];
+}
+
+#pragma mark - Internal methods
+
+/** @fn saveData
+    @brief Save the data in memory to the keychain ignoring any errors.
+ */
+- (void)saveData {
+  NSMutableData *archiveData = [NSMutableData data];
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:archiveData];
+#pragma clang diagnostic pop
+  [archiver encodeObject:_credential forKey:kFullCredentialKey];
+  [archiver encodeObject:_pendingReceipts forKey:kPendingReceiptsKey];
+  [archiver finishEncoding];
+  [_keychainServices setData:archiveData forKey:kKeychainDataKey error:NULL];
+}
+
+/** @fn callBackWithReceipt:
+    @brief Calls the saved callback for the specifc receipt.
+    @param receipt The receipt associated with the callback.
+ */
+- (void)callBackWithReceipt:(NSString *)receipt {
+  FIRAuthAppCredentialCallback callback = _callbacksByReceipt[receipt];
+  if (!callback) {
+    return;
+  }
+  [_callbacksByReceipt removeObjectForKey:receipt];
+  if (_credential) {
+    callback(_credential);
+  } else {
+    callback([[FIRAuthAppCredential alloc] initWithReceipt:receipt secret:nil]);
+  }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h
new file mode 100644
index 0000000..12b6f3e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+@class FIRAuthAppCredentialManager;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRAuthNotificationForwardingCallback
+    @brief The type of block to receive whether or not remote notifications are being forwarded.
+    @param isNotificationBeingForwarded Whether or not remote notifications are being forwarded.
+ */
+typedef void (^FIRAuthNotificationForwardingCallback)(BOOL isNotificationBeingForwarded);
+
+/** @class FIRAuthNotificationManager
+ */
+@interface FIRAuthNotificationManager : NSObject
+
+/** @property timeout
+    @brief The timeout for checking for notification forwarding.
+    @remarks Only tests should access this property.
+ */
+@property(nonatomic, assign) NSTimeInterval timeout;
+
+/** @fn initWithApplication:appCredentialManager:
+    @brief Initializes the instance.
+    @param application The application.
+    @param appCredentialManager The object to handle app credentials delivered via notification.
+    @return The initialized instance.
+ */
+- (instancetype)initWithApplication:(UIApplication *)application
+               appCredentialManager:(FIRAuthAppCredentialManager *)appCredentialManager
+    NS_DESIGNATED_INITIALIZER;
+
+/** @fn init
+    @brief please use initWithAppCredentialManager: instead.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn checkNotificationForwardingWithCallback:
+    @brief Checks whether or not remote notifications are being forwarded to this class.
+    @param callback The block to be called either immediately or in future once a result
+        is available.
+ */
+- (void)checkNotificationForwardingWithCallback:(FIRAuthNotificationForwardingCallback)callback;
+
+/** @fn canHandleNotification:
+    @brief Attempts to handle the remote notification.
+    @param notification The notification in question.
+    @return Whether or the notification has been handled.
+ */
+- (BOOL)canHandleNotification:(NSDictionary *)notification;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.m
new file mode 100644
index 0000000..93bb17e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.m	
@@ -0,0 +1,189 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredential.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthAppCredentialManager.h"
+#import "FirebaseAuth/Sources/SystemService/FIRAuthNotificationManager.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kNotificationKey
+    @brief The key to locate payload data in the remote notification.
+ */
+static NSString *const kNotificationDataKey = @"com.google.firebase.auth";
+
+/** @var kNotificationReceiptKey
+    @brief The key for the receipt in the remote notification payload data.
+ */
+static NSString *const kNotificationReceiptKey = @"receipt";
+
+/** @var kNotificationSecretKey
+    @brief The key for the secret in the remote notification payload data.
+ */
+static NSString *const kNotificationSecretKey = @"secret";
+
+/** @var kNotificationProberKey
+    @brief The key for marking the prober in the remote notification payload data.
+ */
+static NSString *const kNotificationProberKey = @"warning";
+
+/** @var kProbingTimeout
+    @brief Timeout for probing whether the app delegate forwards the remote notification to us.
+ */
+static const NSTimeInterval kProbingTimeout = 1;
+
+@implementation FIRAuthNotificationManager {
+  /** @var _application
+      @brief The application.
+   */
+  UIApplication *_application;
+
+  /** @var _appCredentialManager
+      @brief The object to handle app credentials delivered via notification.
+   */
+  FIRAuthAppCredentialManager *_appCredentialManager;
+
+  /** @var _hasCheckedNotificationForwarding
+      @brief Whether notification forwarding has been checked or not.
+   */
+  BOOL _hasCheckedNotificationForwarding;
+
+  /** @var _isNotificationBeingForwarded
+      @brief Whether or not notification is being forwarded
+   */
+  BOOL _isNotificationBeingForwarded;
+
+  /** @var _pendingCallbacks
+      @brief All pending callbacks while a check is being performed.
+   */
+  NSMutableArray<FIRAuthNotificationForwardingCallback> *_pendingCallbacks;
+}
+
+- (instancetype)initWithApplication:(UIApplication *)application
+               appCredentialManager:(FIRAuthAppCredentialManager *)appCredentialManager {
+  self = [super init];
+  if (self) {
+    _application = application;
+    _appCredentialManager = appCredentialManager;
+    _timeout = kProbingTimeout;
+  }
+  return self;
+}
+
+- (void)checkNotificationForwardingWithCallback:(FIRAuthNotificationForwardingCallback)callback {
+  if (_pendingCallbacks) {
+    [_pendingCallbacks addObject:callback];
+    return;
+  }
+  if (_hasCheckedNotificationForwarding) {
+    callback(_isNotificationBeingForwarded);
+    return;
+  }
+  _hasCheckedNotificationForwarding = YES;
+  _pendingCallbacks =
+      [[NSMutableArray<FIRAuthNotificationForwardingCallback> alloc] initWithObjects:callback, nil];
+  dispatch_async(dispatch_get_main_queue(), ^{
+    NSDictionary *proberNotification = @{
+      kNotificationDataKey : @{
+        kNotificationProberKey : @"This fake notification should be forwarded to Firebase Auth."
+      }
+    };
+    if ([self->_application.delegate
+            respondsToSelector:@selector(application:
+                                   didReceiveRemoteNotification:fetchCompletionHandler:)]) {
+      [self->_application.delegate application:self->_application
+                  didReceiveRemoteNotification:proberNotification
+                        fetchCompletionHandler:^(UIBackgroundFetchResult result){
+                        }];
+#if !TARGET_OS_TV
+    } else if ([self->_application.delegate
+                   respondsToSelector:@selector(application:didReceiveRemoteNotification:)]) {
+// iOS 10 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      [self->_application.delegate application:self->_application
+                  didReceiveRemoteNotification:proberNotification];
+#pragma clang diagnostic pop
+#endif
+    } else {
+      FIRLogWarning(kFIRLoggerAuth, @"I-AUT000015",
+                    @"The UIApplicationDelegate must handle remote notification for phone number "
+                    @"authentication to work.");
+    }
+  });
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(_timeout * NSEC_PER_SEC)),
+                 FIRAuthGlobalWorkQueue(), ^{
+                   [self callBack];
+                 });
+}
+
+- (BOOL)canHandleNotification:(NSDictionary *)notification {
+  NSDictionary *data = notification[kNotificationDataKey];
+  if ([data isKindOfClass:[NSString class]]) {
+    // Deserialize in case the data is a JSON string.
+    NSData *JSONData = [((NSString *)data) dataUsingEncoding:NSUTF8StringEncoding];
+    data = [NSJSONSerialization JSONObjectWithData:JSONData options:0 error:NULL];
+  }
+  if (![data isKindOfClass:[NSDictionary class]]) {
+    return NO;
+  }
+  if (data[kNotificationProberKey]) {
+    if (!_pendingCallbacks) {
+      // The prober notification probably comes from another instance, so pass it along.
+      return NO;
+    }
+    _isNotificationBeingForwarded = YES;
+    [self callBack];
+    return YES;
+  }
+  NSString *receipt = data[kNotificationReceiptKey];
+  if (![receipt isKindOfClass:[NSString class]]) {
+    return NO;
+  }
+  NSString *secret = data[kNotificationSecretKey];
+  if (![receipt isKindOfClass:[NSString class]]) {
+    return NO;
+  }
+  return [_appCredentialManager canFinishVerificationWithReceipt:receipt secret:secret];
+}
+
+#pragma mark - Internal methods
+
+/** @fn callBack
+    @brief Calls back all pending callbacks with the result of notification forwarding check.
+ */
+- (void)callBack {
+  if (!_pendingCallbacks) {
+    return;
+  }
+  NSArray<FIRAuthNotificationForwardingCallback> *allCallbacks = _pendingCallbacks;
+  _pendingCallbacks = nil;
+  for (FIRAuthNotificationForwardingCallback callback in allCallbacks) {
+    callback(_isNotificationBeingForwarded);
+  }
+};
+
+@end
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.h
new file mode 100644
index 0000000..02a85b7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.h	
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h"
+
+#import "FirebaseAuth/Sources/Storage/FIRAuthKeychainServices.h"
+#import "FirebaseAuth/Sources/Storage/FIRAuthUserDefaults.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthStoredUserManager : NSObject
+
+/** @property keychain
+    @brief The mediator object to access to the system Keychain services.
+ */
+@property(readonly, nonatomic, strong) FIRAuthKeychainServices *keychainServices;
+
+/** @property userDefaults
+    @brief The mediator object to access to the system User Defaults services.
+ */
+@property(readonly, nonatomic, strong) FIRAuthUserDefaults *userDefaults;
+
+/** @fn init
+    @brief The default initializer is disabled.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithServiceName:
+    @brief The designated initializer.
+    @param serviceName The service name to initialize with.
+ */
+- (instancetype)initWithServiceName:(NSString *)serviceName NS_DESIGNATED_INITIALIZER;
+
+/** @fn getStoredUserAccessGroupWithError:
+    @brief Get the user access group stored locally.
+    @param outError Return value for any error which occurs.
+ */
+- (nullable NSString *)getStoredUserAccessGroupWithError:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn setStoredUserAccessGroup:error:
+    @brief The setter of the user access group stored locally.
+    @param accessGroup The access group to be set.
+    @param outError Return value for any error which occurs.
+ */
+- (BOOL)setStoredUserAccessGroup:(NSString *_Nullable)accessGroup
+                           error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn getStoredUserForAccessGroup:projectID:error:
+    @brief The getter of the user stored locally.
+    @param accessGroup The access group to retrieve the user from.
+    @param shareAuthStateAcrossDevices If true, the keychain will be synced across the end-user's
+   iCloud.
+    @param projectIdentifier An identifier of the project that the user associates with. Currently,
+        we use API KEY.
+    @param outError Return value for any error which occurs.
+ */
+- (nullable FIRUser *)getStoredUserForAccessGroup:(NSString *)accessGroup
+                      shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+                                projectIdentifier:(NSString *)projectIdentifier
+                                            error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn setStoredUser:forAccessGroup:projectID:error:
+    @brief The setter of the user stored locally.
+    @param user The user to be stored.
+    @param accessGroup The access group to store the user in.
+    @param shareAuthStateAcrossDevices If true, the keychain will be synced across the end-user's
+   iCloud.
+    @param projectIdentifier An identifier of the project that the user associates with. Currently,
+        we use API KEY.
+    @param outError Return value for any error which occurs.
+ */
+- (BOOL)setStoredUser:(FIRUser *)user
+                 forAccessGroup:(NSString *)accessGroup
+    shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+              projectIdentifier:(NSString *)projectIdentifier
+                          error:(NSError *_Nullable *_Nullable)outError;
+
+/** @fn removeStoredUserForAccessGroup:projectID:error:
+    @brief Remove the user that stored locally.
+    @param accessGroup The access group to remove the user from.
+    @param shareAuthStateAcrossDevices If true, the keychain will be synced across the end-user's
+   iCloud.
+    @param projectIdentifier An identifier of the project that the user associates with. Currently,
+        we use API KEY.
+    @param outError Return value for any error which occurs.
+ */
+- (BOOL)removeStoredUserForAccessGroup:(NSString *)accessGroup
+           shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+                     projectIdentifier:(NSString *)projectIdentifier
+                                 error:(NSError *_Nullable *_Nullable)outError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.m
new file mode 100644
index 0000000..deae373
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.m	
@@ -0,0 +1,175 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/SystemService/FIRAuthStoredUserManager.h"
+
+#import "FirebaseAuth/Sources/User/FIRUser_Internal.h"
+
+/** @var kUserAccessGroupKey
+    @brief Key of user access group stored in user defaults. Used for retrieve the user access
+        group at launch.
+ */
+static NSString *kStoredUserAccessGroupKey = @"firebase_auth_stored_user_access_group";
+
+/** @var kSharedKeychainAccountValue
+    @brief Default value for kSecAttrAccount of shared keychain items.
+ */
+static NSString *kSharedKeychainAccountValue = @"firebase_auth_firebase_user";
+
+/** @var kStoredUserCoderKey
+    @brief The key to encode and decode the stored user.
+ */
+static NSString *kStoredUserCoderKey = @"firebase_auth_stored_user_coder_key";
+
+@implementation FIRAuthStoredUserManager
+
+#pragma mark - Initializers
+
+- (instancetype)initWithServiceName:(NSString *)serviceName {
+  self = [super init];
+  if (self) {
+    _keychainServices = [[FIRAuthKeychainServices alloc] initWithService:serviceName];
+    _userDefaults = [[FIRAuthUserDefaults alloc] initWithService:serviceName];
+  }
+  return self;
+}
+
+#pragma mark - User Access Group
+
+- (NSString *_Nullable)getStoredUserAccessGroupWithError:(NSError *_Nullable *_Nullable)outError {
+  NSData *data = [self.userDefaults dataForKey:kStoredUserAccessGroupKey error:outError];
+  if (data) {
+    NSString *userAccessGroup = [NSString stringWithUTF8String:data.bytes];
+    return userAccessGroup;
+  } else {
+    return nil;
+  }
+}
+
+- (BOOL)setStoredUserAccessGroup:(NSString *_Nullable)accessGroup
+                           error:(NSError *_Nullable *_Nullable)outError {
+  NSData *data = [accessGroup dataUsingEncoding:NSUTF8StringEncoding];
+  if (!data) {
+    return [self.userDefaults removeDataForKey:kStoredUserAccessGroupKey error:outError];
+  } else {
+    return [self.userDefaults setData:data forKey:kStoredUserAccessGroupKey error:outError];
+  }
+}
+
+#pragma mark - User for Access Group
+
+- (FIRUser *)getStoredUserForAccessGroup:(NSString *)accessGroup
+             shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+                       projectIdentifier:(NSString *)projectIdentifier
+                                   error:(NSError *_Nullable *_Nullable)outError {
+  NSMutableDictionary *query = [[NSMutableDictionary alloc] init];
+  query[(__bridge id)kSecClass] = (__bridge id)kSecClassGenericPassword;
+
+  query[(__bridge id)kSecAttrAccessGroup] = accessGroup;
+  query[(__bridge id)kSecAttrService] = projectIdentifier;
+  query[(__bridge id)kSecAttrAccount] = kSharedKeychainAccountValue;
+  if (shareAuthStateAcrossDevices) {
+    query[(__bridge id)kSecAttrSynchronizable] = (__bridge id)kCFBooleanTrue;
+  }
+
+  NSData *data = [self.keychainServices getItemWithQuery:query error:outError];
+  // If there's an outError parameter and it's populated, or there's no data, return.
+  if ((outError && *outError) || !data) {
+    return nil;
+  }
+#if TARGET_OS_WATCH
+  NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingFromData:data
+                                                                              error:outError];
+  if (outError && *outError) {
+    return nil;
+  }
+#else
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+  FIRUser *user = [unarchiver decodeObjectOfClass:[FIRUser class] forKey:kStoredUserCoderKey];
+
+  return user;
+}
+
+- (BOOL)setStoredUser:(FIRUser *)user
+                 forAccessGroup:(NSString *)accessGroup
+    shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+              projectIdentifier:(NSString *)projectIdentifier
+                          error:(NSError *_Nullable *_Nullable)outError {
+  NSMutableDictionary *query = [[NSMutableDictionary alloc] init];
+  query[(__bridge id)kSecClass] = (__bridge id)kSecClassGenericPassword;
+  if (shareAuthStateAcrossDevices) {
+    query[(__bridge id)kSecAttrAccessible] = (__bridge id)kSecAttrAccessibleAfterFirstUnlock;
+  } else {
+    query[(__bridge id)kSecAttrAccessible] =
+        (__bridge id)kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly;
+  }
+
+  query[(__bridge id)kSecAttrAccessGroup] = accessGroup;
+  query[(__bridge id)kSecAttrService] = projectIdentifier;
+  query[(__bridge id)kSecAttrAccount] = kSharedKeychainAccountValue;
+  if (shareAuthStateAcrossDevices) {
+    query[(__bridge id)kSecAttrSynchronizable] = (__bridge id)kCFBooleanTrue;
+  }
+
+#if TARGET_OS_WATCH
+  NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initRequiringSecureCoding:false];
+#else
+  NSMutableData *data = [NSMutableData data];
+// iOS 12 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
+#pragma clang diagnostic pop
+#endif  // TARGET_OS_WATCH
+  [archiver encodeObject:user forKey:kStoredUserCoderKey];
+  [archiver finishEncoding];
+
+#if TARGET_OS_WATCH
+  NSData *data = archiver.encodedData;
+#endif  // TARGET_OS_WATCH
+
+  return [self.keychainServices setItem:data withQuery:query error:outError];
+}
+
+- (BOOL)removeStoredUserForAccessGroup:(NSString *)accessGroup
+           shareAuthStateAcrossDevices:(BOOL)shareAuthStateAcrossDevices
+                     projectIdentifier:(NSString *)projectIdentifier
+                                 error:(NSError *_Nullable *_Nullable)outError {
+  NSMutableDictionary *query = [[NSMutableDictionary alloc] init];
+  query[(__bridge id)kSecClass] = (__bridge id)kSecClassGenericPassword;
+  if (shareAuthStateAcrossDevices) {
+    query[(__bridge id)kSecAttrAccessible] = (__bridge id)kSecAttrAccessibleAfterFirstUnlock;
+  } else {
+    query[(__bridge id)kSecAttrAccessible] =
+        (__bridge id)kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly;
+  }
+  if (shareAuthStateAcrossDevices) {
+    query[(__bridge id)kSecAttrSynchronizable] = (__bridge id)kCFBooleanTrue;
+  }
+
+  query[(__bridge id)kSecAttrAccessGroup] = accessGroup;
+  query[(__bridge id)kSecAttrService] = projectIdentifier;
+  query[(__bridge id)kSecAttrAccount] = kSharedKeychainAccountValue;
+
+  return [self.keychainServices removeItemWithQuery:query error:outError];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.h
new file mode 100644
index 0000000..ba03b7d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.h	
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthRequestConfiguration;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRFetchAccessTokenCallback
+    @brief The callback used to return the value of attempting to fetch an access token.
+
+    In the event the operation was successful @c token will be set and @c error will be @c nil.
+    In the event of failure @c token will be @c nil and @c error will be set.
+    @c tokenUpdated indicates whether either the access or the refresh token has been updated.
+
+    The token returned should be considered ephemeral and not cached. It should be used immediately
+    and discarded. All operations that need this token should call fetchAccessToken and do their
+    work from the callback.
+ */
+typedef void (^FIRFetchAccessTokenCallback)(NSString *_Nullable token,
+                                            NSError *_Nullable error,
+                                            BOOL tokenUpdated);
+
+/** @class FIRSecureTokenService
+    @brief Provides services for token exchanges and refreshes.
+ */
+@interface FIRSecureTokenService : NSObject <NSSecureCoding>
+
+/** @property requestConfiguration
+    @brief The configuration for making requests to server.
+ */
+@property(nonatomic, strong) FIRAuthRequestConfiguration *requestConfiguration;
+
+/** @property rawAccessToken
+    @brief The cached access token.
+    @remarks This method is specifically for providing the access token to internal clients during
+        deserialization and sign-in events, and should not be used to retrieve the access token by
+        anyone else.
+ */
+@property(nonatomic, copy, readonly) NSString *rawAccessToken;
+
+/** @property refreshToken
+    @brief The refresh token for the user, or @c nil if the user has yet completed sign-in flow.
+    @remarks This property needs to be set manually after the instance is decoded from archive.
+ */
+@property(nonatomic, copy, readonly, nullable) NSString *refreshToken;
+
+/** @property accessTokenExpirationDate
+    @brief The expiration date of the cached access token.
+ */
+@property(nonatomic, copy, readonly, nullable) NSDate *accessTokenExpirationDate;
+
+/** @fn initWithRequestConfiguration:authorizationCode:
+    @brief Creates a @c FIRSecureTokenService with an authroization code.
+    @param requestConfiguration The configuration for making requests to server.
+    @param authorizationCode An authorization code which needs to be exchanged for STS tokens.
+ */
+- (instancetype)initWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                           authorizationCode:(NSString *)authorizationCode;
+
+/** @fn initWithRequestConfiguration:accessToken:accessTokenExpirationDate:refreshToken
+    @brief Creates a @c FIRSecureTokenService with access and refresh tokens.
+    @param requestConfiguration The configuration for making requests to server.
+    @param accessToken The STS access token.
+    @param accessTokenExpirationDate The approximate expiration date of the access token.
+    @param refreshToken The STS refresh token.
+ */
+- (instancetype)initWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                 accessToken:(nullable NSString *)accessToken
+                   accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                                refreshToken:(NSString *)refreshToken;
+
+/** @fn fetchAccessTokenForcingRefresh:callback:
+    @brief Fetch a fresh ephemeral access token for the ID associated with this instance. The token
+        received in the callback should be considered short lived and not cached.
+    @param forceRefresh Forces the token to be refreshed.
+    @param callback Callback block that will be called to return either the token or an error.
+        Invoked asyncronously on the auth global work queue in the future.
+ */
+- (void)fetchAccessTokenForcingRefresh:(BOOL)forceRefresh
+                              callback:(FIRFetchAccessTokenCallback)callback;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.m
new file mode 100644
index 0000000..8f49cd3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/SystemService/FIRSecureTokenService.m	
@@ -0,0 +1,227 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/SystemService/FIRSecureTokenService.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSecureTokenResponse.h"
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kAPIKeyCodingKey
+    @brief The key used to encode the APIKey for NSSecureCoding.
+ */
+static NSString *const kAPIKeyCodingKey = @"APIKey";
+
+/** @var kRefreshTokenKey
+    @brief The key used to encode the refresh token for NSSecureCoding.
+ */
+static NSString *const kRefreshTokenKey = @"refreshToken";
+
+/** @var kAccessTokenKey
+    @brief The key used to encode the access token for NSSecureCoding.
+ */
+static NSString *const kAccessTokenKey = @"accessToken";
+
+/** @var kAccessTokenExpirationDateKey
+    @brief The key used to encode the access token expiration date for NSSecureCoding.
+ */
+static NSString *const kAccessTokenExpirationDateKey = @"accessTokenExpirationDate";
+
+/** @var kFiveMinutes
+    @brief Five minutes (in seconds.)
+ */
+static const NSTimeInterval kFiveMinutes = 5 * 60;
+
+@interface FIRSecureTokenService ()
+- (instancetype)init NS_DESIGNATED_INITIALIZER;
+@end
+
+@implementation FIRSecureTokenService {
+  /** @var _taskQueue
+      @brief Used to serialize all requests for access tokens.
+   */
+  FIRAuthSerialTaskQueue *_taskQueue;
+
+  /** @var _authorizationCode
+      @brief An authorization code which needs to be exchanged for Secure Token Service tokens.
+   */
+  NSString *_Nullable _authorizationCode;
+
+  /** @var _accessToken
+      @brief The currently cached access token. Or |nil| if no token is currently cached.
+   */
+  NSString *_Nullable _accessToken;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _taskQueue = [[FIRAuthSerialTaskQueue alloc] init];
+  }
+  return self;
+}
+
+- (instancetype)initWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                           authorizationCode:(NSString *)authorizationCode {
+  self = [self init];
+  if (self) {
+    _requestConfiguration = requestConfiguration;
+    _authorizationCode = [authorizationCode copy];
+  }
+  return self;
+}
+
+- (instancetype)initWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                 accessToken:(nullable NSString *)accessToken
+                   accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                                refreshToken:(NSString *)refreshToken {
+  self = [self init];
+  if (self) {
+    _requestConfiguration = requestConfiguration;
+    _accessToken = [accessToken copy];
+    _accessTokenExpirationDate = [accessTokenExpirationDate copy];
+    _refreshToken = [refreshToken copy];
+  }
+  return self;
+}
+
+- (void)fetchAccessTokenForcingRefresh:(BOOL)forceRefresh
+                              callback:(FIRFetchAccessTokenCallback)callback {
+  [_taskQueue enqueueTask:^(FIRAuthSerialTaskCompletionBlock complete) {
+    if (!forceRefresh && [self hasValidAccessToken]) {
+      complete();
+      callback(self->_accessToken, nil, NO);
+    } else {
+      FIRLogDebug(kFIRLoggerAuth, @"I-AUT000017", @"Fetching new token from backend.");
+      [self requestAccessToken:^(NSString *_Nullable token, NSError *_Nullable error,
+                                 BOOL tokenUpdated) {
+        complete();
+        callback(token, error, tokenUpdated);
+      }];
+    }
+  }];
+}
+
+- (NSString *)rawAccessToken {
+  return _accessToken;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *refreshToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:kRefreshTokenKey];
+  NSString *accessToken = [aDecoder decodeObjectOfClass:[NSString class] forKey:kAccessTokenKey];
+  NSDate *accessTokenExpirationDate = [aDecoder decodeObjectOfClass:[NSDate class]
+                                                             forKey:kAccessTokenExpirationDateKey];
+  if (!refreshToken) {
+    return nil;
+  }
+  self = [self init];
+  if (self) {
+    _refreshToken = refreshToken;
+    _accessToken = accessToken;
+    _accessTokenExpirationDate = accessTokenExpirationDate;
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  // The API key is encoded even it is not used in decoding to be compatible with previous versions
+  // of the library.
+  [aCoder encodeObject:_requestConfiguration.APIKey forKey:kAPIKeyCodingKey];
+  // Authorization code is not encoded because it is not long-lived.
+  [aCoder encodeObject:_refreshToken forKey:kRefreshTokenKey];
+  [aCoder encodeObject:_accessToken forKey:kAccessTokenKey];
+  [aCoder encodeObject:_accessTokenExpirationDate forKey:kAccessTokenExpirationDateKey];
+}
+
+#pragma mark - Private methods
+
+/** @fn requestAccessToken:
+    @brief Makes a request to STS for an access token.
+    @details This handles both the case that the token has not been granted yet and that it just
+        needs to be refreshed. The caller is responsible for making sure that this is occurring in
+        a @c _taskQueue task.
+    @param callback Called when the fetch is complete. Invoked asynchronously on the main thread in
+        the future.
+    @remarks Because this method is guaranteed to only be called from tasks enqueued in
+        @c _taskQueue, we do not need any @synchronized guards around access to _accessToken/etc.
+        since only one of those tasks is ever running at a time, and those tasks are the only
+        access to and mutation of these instance variables.
+ */
+- (void)requestAccessToken:(FIRFetchAccessTokenCallback)callback {
+  FIRSecureTokenRequest *request;
+  if (_refreshToken.length) {
+    request = [FIRSecureTokenRequest refreshRequestWithRefreshToken:_refreshToken
+                                               requestConfiguration:_requestConfiguration];
+  } else {
+    request = [FIRSecureTokenRequest authCodeRequestWithCode:_authorizationCode
+                                        requestConfiguration:_requestConfiguration];
+  }
+  [FIRAuthBackend
+    secureToken:request
+       callback:^(FIRSecureTokenResponse *_Nullable response, NSError *_Nullable error) {
+         BOOL tokenUpdated = NO;
+         NSString *newAccessToken = response.accessToken;
+         if (newAccessToken.length && ![newAccessToken isEqualToString:self->_accessToken]) {
+           self->_accessToken = [newAccessToken copy];
+           self->_accessTokenExpirationDate = response.approximateExpirationDate;
+           tokenUpdated = YES;
+           FIRLogDebug(kFIRLoggerAuth, @"I-AUT000017",
+                       @"Updated access token. Estimated expiration date: %@, current date: %@",
+                       self->_accessTokenExpirationDate, [NSDate date]);
+         }
+         NSString *newRefreshToken = response.refreshToken;
+         if (newRefreshToken.length && ![newRefreshToken isEqualToString:self->_refreshToken]) {
+           self->_refreshToken = [newRefreshToken copy];
+           tokenUpdated = YES;
+         }
+         callback(newAccessToken, error, tokenUpdated);
+       }];
+}
+
+- (BOOL)hasValidAccessToken {
+  BOOL hasValidAccessToken =
+      _accessToken && [_accessTokenExpirationDate timeIntervalSinceNow] > kFiveMinutes;
+  if (hasValidAccessToken) {
+    FIRLogDebug(kFIRLoggerAuth, @"I-AUT000017",
+                @"Has valid access token. Estimated expiration date: %@, current date: %@",
+                _accessTokenExpirationDate, [NSDate date]);
+  } else {
+    FIRLogDebug(
+        kFIRLoggerAuth, @"I-AUT000017",
+        @"Does not have valid access token. Estimated expiration date: %@, current date: %@",
+        _accessTokenExpirationDate, [NSDate date]);
+  }
+  return hasValidAccessToken;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo.m
new file mode 100644
index 0000000..52f56c4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo.m	
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+#import "FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAdditionalUserInfo
+
+/** @var kProviderIDCodingKey
+    @brief The key used to encode the providerID property for NSSecureCoding.
+ */
+static NSString *const kProviderIDCodingKey = @"providerID";
+
+/** @var kProfileCodingKey
+    @brief The key used to encode the profile property for NSSecureCoding.
+ */
+static NSString *const kProfileCodingKey = @"profile";
+
+/** @var kUsernameCodingKey
+    @brief The key used to encode the username property for NSSecureCoding.
+ */
+static NSString *const kUsernameCodingKey = @"username";
+
+/** @var kNewUserKey
+    @brief The key used to encode the newUser property for NSSecureCoding.
+ */
+static NSString *const kNewUserKey = @"newUser";
+
++ (nullable instancetype)userInfoWithVerifyAssertionResponse:
+    (FIRVerifyAssertionResponse *)verifyAssertionResponse {
+  return [[self alloc] initWithProviderID:verifyAssertionResponse.providerID
+                                  profile:verifyAssertionResponse.profile
+                                 username:verifyAssertionResponse.username
+                                isNewUser:verifyAssertionResponse.isNewUser];
+}
+
+- (nullable instancetype)initWithProviderID:(nullable NSString *)providerID
+                                    profile:(nullable NSDictionary<NSString *, NSObject *> *)profile
+                                   username:(nullable NSString *)username
+                                  isNewUser:(BOOL)isNewUser {
+  self = [super init];
+  if (self) {
+    _providerID = [providerID copy];
+    if (profile) {
+      _profile = [[NSDictionary alloc] initWithDictionary:profile copyItems:YES];
+    }
+    _username = [username copy];
+    _newUser = isNewUser;
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *providerID = [aDecoder decodeObjectOfClass:[NSString class]
+                                                forKey:kProviderIDCodingKey];
+  NSDictionary<NSString *, NSObject *> *profile = [aDecoder decodeObjectOfClass:[NSDictionary class]
+                                                                         forKey:kProfileCodingKey];
+  NSString *username = [aDecoder decodeObjectOfClass:[NSString class] forKey:kUsernameCodingKey];
+  NSNumber *isNewUser = [aDecoder decodeObjectOfClass:[NSNumber class] forKey:kNewUserKey];
+
+  return [self initWithProviderID:providerID
+                          profile:profile
+                         username:username
+                        isNewUser:isNewUser.boolValue];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_providerID forKey:kProviderIDCodingKey];
+  [aCoder encodeObject:_profile forKey:kProfileCodingKey];
+  [aCoder encodeObject:_username forKey:kUsernameCodingKey];
+  [aCoder encodeObject:[NSNumber numberWithBool:_newUser] forKey:kNewUserKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h
new file mode 100644
index 0000000..d0be10c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAdditionalUserInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAdditionalUserInfo () <NSSecureCoding>
+
+/** @fn userInfoWithVerifyAssertionResponse:
+    @brief A convenience factory method for constructing a @c FIRAdditionalUserInfo instance from
+        data returned by the verifyAssertion endpoint.
+    @param verifyAssertionResponse Data returned by the verifyAssertion endpoint.
+    @return A new instance of @c FIRAdditionalUserInfo using data from the verifyAssertion endpoint.
+ */
++ (nullable instancetype)userInfoWithVerifyAssertionResponse:
+    (FIRVerifyAssertionResponse *)verifyAssertionResponse;
+
+/** @fn initWithProviderID:profile:username:
+    @brief Designated initializer.
+    @param providerID The provider identifier.
+    @param profile Dictionary containing the additional IdP specific information.
+    @param username The name of the user.
+    @param isNewUser Indicates whether or not the current user was signed in for the first time.
+ */
+- (nullable instancetype)initWithProviderID:(nullable NSString *)providerID
+                                    profile:(nullable NSDictionary<NSString *, NSObject *> *)profile
+                                   username:(nullable NSString *)username
+                                  isNewUser:(BOOL)isNewUser NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser.m
new file mode 100644
index 0000000..fb91fda
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser.m	
@@ -0,0 +1,1627 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuth.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIREmailAuthProvider.h"
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRFederatedAuthProvider.h"
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthDataResult_Internal.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthOperationType.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthSerialTaskQueue.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuthTokenResult_Internal.h"
+#import "FirebaseAuth/Sources/Auth/FIRAuth_Internal.h"
+#import "FirebaseAuth/Sources/AuthProvider/Email/FIREmailPasswordAuthCredential.h"
+#import "FirebaseAuth/Sources/AuthProvider/FIRAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/AuthProvider/GameCenter/FIRGameCenterAuthCredential.h"
+#import "FirebaseAuth/Sources/AuthProvider/OAuth/FIROAuthCredential_Internal.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/FIRAuthRequestConfiguration.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRDeleteAccountResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIREmailLinkSignInResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetOOBConfirmationCodeResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSetAccountInfoResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRSignInWithGameCenterResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyAssertionResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyCustomTokenResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPasswordResponse.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRVerifyPhoneNumberResponse.h"
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactor+Internal.h"
+#import "FirebaseAuth/Sources/SystemService/FIRSecureTokenService.h"
+#import "FirebaseAuth/Sources/User/FIRAdditionalUserInfo_Internal.h"
+#import "FirebaseAuth/Sources/User/FIRUserInfoImpl.h"
+#import "FirebaseAuth/Sources/User/FIRUserMetadata_Internal.h"
+#import "FirebaseAuth/Sources/User/FIRUser_Internal.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h"
+
+#if TARGET_OS_IOS
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRPhoneAuthProvider.h"
+
+#import "FirebaseAuth/Sources/AuthProvider/Phone/FIRPhoneAuthCredential_Internal.h"
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kUserIDCodingKey
+    @brief The key used to encode the user ID for NSSecureCoding.
+ */
+static NSString *const kUserIDCodingKey = @"userID";
+
+/** @var kHasEmailPasswordCredentialCodingKey
+    @brief The key used to encode the hasEmailPasswordCredential property for NSSecureCoding.
+ */
+static NSString *const kHasEmailPasswordCredentialCodingKey = @"hasEmailPassword";
+
+/** @var kAnonymousCodingKey
+    @brief The key used to encode the anonymous property for NSSecureCoding.
+ */
+static NSString *const kAnonymousCodingKey = @"anonymous";
+
+/** @var kEmailCodingKey
+    @brief The key used to encode the email property for NSSecureCoding.
+ */
+static NSString *const kEmailCodingKey = @"email";
+
+/** @var kPhoneNumberCodingKey
+    @brief The key used to encode the phoneNumber property for NSSecureCoding.
+ */
+static NSString *const kPhoneNumberCodingKey = @"phoneNumber";
+
+/** @var kEmailVerifiedCodingKey
+    @brief The key used to encode the isEmailVerified property for NSSecureCoding.
+ */
+static NSString *const kEmailVerifiedCodingKey = @"emailVerified";
+
+/** @var kDisplayNameCodingKey
+    @brief The key used to encode the displayName property for NSSecureCoding.
+ */
+static NSString *const kDisplayNameCodingKey = @"displayName";
+
+/** @var kPhotoURLCodingKey
+    @brief The key used to encode the photoURL property for NSSecureCoding.
+ */
+static NSString *const kPhotoURLCodingKey = @"photoURL";
+
+/** @var kProviderDataKey
+    @brief The key used to encode the providerData instance variable for NSSecureCoding.
+ */
+static NSString *const kProviderDataKey = @"providerData";
+
+/** @var kAPIKeyCodingKey
+    @brief The key used to encode the APIKey instance variable for NSSecureCoding.
+ */
+static NSString *const kAPIKeyCodingKey = @"APIKey";
+
+/** @var kTokenServiceCodingKey
+    @brief The key used to encode the tokenService instance variable for NSSecureCoding.
+ */
+static NSString *const kTokenServiceCodingKey = @"tokenService";
+
+/** @var kMetadataCodingKey
+    @brief The key used to encode the metadata instance variable for NSSecureCoding.
+ */
+static NSString *const kMetadataCodingKey = @"metadata";
+
+static NSString *const kMultiFactorCodingKey = @"multiFactor";
+
+/** @var kTenantIDKey
+    @brief The key used to encode the tenantID instance variable for NSSecureCoding.
+ */
+static NSString *const kTenantIDCodingKey = @"tenantID";
+
+/** @var kMissingUsersErrorMessage
+    @brief The error message when there is no users array in the getAccountInfo response.
+ */
+static NSString *const kMissingUsersErrorMessage = @"users";
+
+/** @typedef CallbackWithError
+    @brief The type for a callback block that only takes an error parameter.
+ */
+typedef void (^CallbackWithError)(NSError *_Nullable);
+
+/** @typedef CallbackWithUserAndError
+    @brief The type for a callback block that takes a user parameter and an error parameter.
+ */
+typedef void (^CallbackWithUserAndError)(FIRUser *_Nullable, NSError *_Nullable);
+
+/** @typedef CallbackWithUserAndError
+    @brief The type for a callback block that takes a user parameter and an error parameter.
+ */
+typedef void (^CallbackWithAuthDataResultAndError)(FIRAuthDataResult *_Nullable,
+                                                   NSError *_Nullable);
+
+/** @var kMissingPasswordReason
+    @brief The reason why the @c FIRAuthErrorCodeWeakPassword error is thrown.
+    @remarks This error message will be localized in the future.
+ */
+static NSString *const kMissingPasswordReason = @"Missing Password";
+
+/** @fn callInMainThreadWithError
+    @brief Calls a callback in main thread with error.
+    @param callback The callback to be called in main thread.
+    @param error The error to pass to callback.
+ */
+static void callInMainThreadWithError(_Nullable CallbackWithError callback,
+                                      NSError *_Nullable error) {
+  if (callback) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      callback(error);
+    });
+  }
+}
+
+/** @fn callInMainThreadWithUserAndError
+    @brief Calls a callback in main thread with user and error.
+    @param callback The callback to be called in main thread.
+    @param user The user to pass to callback if there is no error.
+    @param error The error to pass to callback.
+ */
+static void callInMainThreadWithUserAndError(_Nullable CallbackWithUserAndError callback,
+                                             FIRUser *_Nonnull user,
+                                             NSError *_Nullable error) {
+  if (callback) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      callback(error ? nil : user, error);
+    });
+  }
+}
+
+/** @fn callInMainThreadWithUserAndError
+    @brief Calls a callback in main thread with user and error.
+    @param callback The callback to be called in main thread.
+    @param result The result to pass to callback if there is no error.
+    @param error The error to pass to callback.
+ */
+static void callInMainThreadWithAuthDataResultAndError(
+    _Nullable CallbackWithAuthDataResultAndError callback,
+    FIRAuthDataResult *_Nullable result,
+    NSError *_Nullable error) {
+  if (callback) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      callback(result, error);
+    });
+  }
+}
+
+@interface FIRUserProfileChangeRequest ()
+
+/** @fn initWithUser:
+    @brief Designated initializer.
+    @param user The user for which we are updating profile information.
+ */
+- (nullable instancetype)initWithUser:(FIRUser *)user NS_DESIGNATED_INITIALIZER;
+
+@end
+
+@interface FIRUser ()
+
+/** @property anonymous
+ @brief Whether the current user is anonymous.
+ */
+@property(nonatomic, readwrite) BOOL anonymous;
+
+/** @property tenantID
+    @brief The tenant ID of the current user. nil if none is available.
+ */
+@property(nonatomic, readwrite, nullable) NSString *tenantID;
+
+@end
+
+@implementation FIRUser {
+  /** @var _hasEmailPasswordCredential
+      @brief Whether or not the user can be authenticated by using Firebase email and password.
+   */
+  BOOL _hasEmailPasswordCredential;
+
+  /** @var _providerData
+      @brief Provider specific user data.
+   */
+  NSDictionary<NSString *, FIRUserInfoImpl *> *_providerData;
+
+  /** @var _taskQueue
+      @brief Used to serialize the update profile calls.
+   */
+  FIRAuthSerialTaskQueue *_taskQueue;
+
+  /** @var _tokenService
+      @brief A secure token service associated with this user. For performing token exchanges and
+          refreshing access tokens.
+   */
+  FIRSecureTokenService *_tokenService;
+}
+
+#pragma mark - Properties
+
+// Explicitly @synthesize because these properties are defined in FIRUserInfo protocol.
+@synthesize uid = _userID;
+@synthesize displayName = _displayName;
+@synthesize photoURL = _photoURL;
+@synthesize email = _email;
+@synthesize phoneNumber = _phoneNumber;
+
+#pragma mark -
+
++ (void)retrieveUserWithAuth:(FIRAuth *)auth
+                  accessToken:(nullable NSString *)accessToken
+    accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                 refreshToken:(nullable NSString *)refreshToken
+                    anonymous:(BOOL)anonymous
+                     callback:(FIRRetrieveUserCallback)callback {
+  FIRSecureTokenService *tokenService =
+      [[FIRSecureTokenService alloc] initWithRequestConfiguration:auth.requestConfiguration
+                                                      accessToken:accessToken
+                                        accessTokenExpirationDate:accessTokenExpirationDate
+                                                     refreshToken:refreshToken];
+  FIRUser *user = [[self alloc] initWithTokenService:tokenService];
+  user.auth = auth;
+  user.tenantID = auth.tenantID;
+  user.requestConfiguration = auth.requestConfiguration;
+  [user internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+    if (error) {
+      callback(nil, error);
+      return;
+    }
+    FIRGetAccountInfoRequest *getAccountInfoRequest =
+        [[FIRGetAccountInfoRequest alloc] initWithAccessToken:accessToken
+                                         requestConfiguration:auth.requestConfiguration];
+    [FIRAuthBackend
+        getAccountInfo:getAccountInfoRequest
+              callback:^(FIRGetAccountInfoResponse *_Nullable response, NSError *_Nullable error) {
+                if (error) {
+                  // No need to sign out user here for errors because the user hasn't been signed in
+                  // yet.
+                  callback(nil, error);
+                  return;
+                }
+                user.anonymous = anonymous;
+                [user updateWithGetAccountInfoResponse:response];
+                callback(user, nil);
+              }];
+  }];
+}
+
+- (instancetype)initWithTokenService:(FIRSecureTokenService *)tokenService {
+  self = [super init];
+  if (self) {
+    _providerData = @{};
+    _taskQueue = [[FIRAuthSerialTaskQueue alloc] init];
+    _tokenService = tokenService;
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *userID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kUserIDCodingKey];
+  BOOL hasAnonymousKey = [aDecoder containsValueForKey:kAnonymousCodingKey];
+  BOOL anonymous = [aDecoder decodeBoolForKey:kAnonymousCodingKey];
+  BOOL hasEmailPasswordCredential =
+      [aDecoder decodeBoolForKey:kHasEmailPasswordCredentialCodingKey];
+  NSString *displayName = [aDecoder decodeObjectOfClass:[NSString class]
+                                                 forKey:kDisplayNameCodingKey];
+  NSURL *photoURL = [aDecoder decodeObjectOfClass:[NSURL class] forKey:kPhotoURLCodingKey];
+  NSString *email = [aDecoder decodeObjectOfClass:[NSString class] forKey:kEmailCodingKey];
+  NSString *phoneNumber = [aDecoder decodeObjectOfClass:[NSString class]
+                                                 forKey:kPhoneNumberCodingKey];
+  BOOL emailVerified = [aDecoder decodeBoolForKey:kEmailVerifiedCodingKey];
+  NSSet *providerDataClasses =
+      [NSSet setWithArray:@[ [NSDictionary class], [NSString class], [FIRUserInfoImpl class] ]];
+  NSDictionary<NSString *, FIRUserInfoImpl *> *providerData =
+      [aDecoder decodeObjectOfClasses:providerDataClasses forKey:kProviderDataKey];
+  FIRSecureTokenService *tokenService = [aDecoder decodeObjectOfClass:[FIRSecureTokenService class]
+                                                               forKey:kTokenServiceCodingKey];
+  FIRUserMetadata *metadata = [aDecoder decodeObjectOfClass:[FIRUserMetadata class]
+                                                     forKey:kMetadataCodingKey];
+  NSString *tenantID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kTenantIDCodingKey];
+  NSString *APIKey = [aDecoder decodeObjectOfClass:[NSString class] forKey:kAPIKeyCodingKey];
+#if TARGET_OS_IOS
+  FIRMultiFactor *multiFactor = [aDecoder decodeObjectOfClass:[FIRMultiFactor class]
+                                                       forKey:kMultiFactorCodingKey];
+#endif
+  if (!userID || !tokenService) {
+    return nil;
+  }
+  self = [self initWithTokenService:tokenService];
+  if (self) {
+    _userID = userID;
+    // Previous version of this code didn't save 'anonymous' bit directly but deduced it from
+    // 'hasEmailPasswordCredential' and 'providerData' instead, so here backward compatibility is
+    // provided to read old format data.
+    _anonymous = hasAnonymousKey ? anonymous : (!hasEmailPasswordCredential && !providerData.count);
+    _hasEmailPasswordCredential = hasEmailPasswordCredential;
+    _email = email;
+    _emailVerified = emailVerified;
+    _displayName = displayName;
+    _photoURL = photoURL;
+    _providerData = providerData;
+    _phoneNumber = phoneNumber;
+    _metadata = metadata ?: [[FIRUserMetadata alloc] initWithCreationDate:nil lastSignInDate:nil];
+    _tenantID = tenantID;
+    _requestConfiguration = [[FIRAuthRequestConfiguration alloc] initWithAPIKey:APIKey];
+#if TARGET_OS_IOS
+    _multiFactor = multiFactor ?: [[FIRMultiFactor alloc] init];
+#endif
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_userID forKey:kUserIDCodingKey];
+  [aCoder encodeBool:self.anonymous forKey:kAnonymousCodingKey];
+  [aCoder encodeBool:_hasEmailPasswordCredential forKey:kHasEmailPasswordCredentialCodingKey];
+  [aCoder encodeObject:_providerData forKey:kProviderDataKey];
+  [aCoder encodeObject:_email forKey:kEmailCodingKey];
+  [aCoder encodeObject:_phoneNumber forKey:kPhoneNumberCodingKey];
+  [aCoder encodeBool:_emailVerified forKey:kEmailVerifiedCodingKey];
+  [aCoder encodeObject:_photoURL forKey:kPhotoURLCodingKey];
+  [aCoder encodeObject:_displayName forKey:kDisplayNameCodingKey];
+  [aCoder encodeObject:_metadata forKey:kMetadataCodingKey];
+  [aCoder encodeObject:_tenantID forKey:kTenantIDCodingKey];
+  [aCoder encodeObject:_auth.requestConfiguration.APIKey forKey:kAPIKeyCodingKey];
+  [aCoder encodeObject:_tokenService forKey:kTokenServiceCodingKey];
+#if TARGET_OS_IOS
+  [aCoder encodeObject:_multiFactor forKey:kMultiFactorCodingKey];
+#endif
+}
+
+#pragma mark -
+
+- (void)setAuth:(nullable FIRAuth *)auth {
+  _auth = auth;
+  _tokenService.requestConfiguration = auth.requestConfiguration;
+}
+
+- (NSString *)providerID {
+  return @"Firebase";
+}
+
+- (NSArray<id<FIRUserInfo>> *)providerData {
+  return _providerData.allValues;
+}
+
+/** @fn getAccountInfoRefreshingCache:
+    @brief Gets the users's account data from the server, updating our local values.
+    @param callback Invoked when the request to getAccountInfo has completed, or when an error has
+        been detected. Invoked asynchronously on the auth global work queue in the future.
+ */
+- (void)getAccountInfoRefreshingCache:(void (^)(FIRGetAccountInfoResponseUser *_Nullable user,
+                                                NSError *_Nullable error))callback {
+  [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+    if (error) {
+      callback(nil, error);
+      return;
+    }
+    FIRGetAccountInfoRequest *getAccountInfoRequest =
+        [[FIRGetAccountInfoRequest alloc] initWithAccessToken:accessToken
+                                         requestConfiguration:self->_auth.requestConfiguration];
+    [FIRAuthBackend
+        getAccountInfo:getAccountInfoRequest
+              callback:^(FIRGetAccountInfoResponse *_Nullable response, NSError *_Nullable error) {
+                if (error) {
+                  [self signOutIfTokenIsInvalidWithError:error];
+                  callback(nil, error);
+                  return;
+                }
+                [self updateWithGetAccountInfoResponse:response];
+                if (![self updateKeychain:&error]) {
+                  callback(nil, error);
+                  return;
+                }
+                callback(response.users.firstObject, nil);
+              }];
+  }];
+}
+
+- (void)updateWithGetAccountInfoResponse:(FIRGetAccountInfoResponse *)response {
+  FIRGetAccountInfoResponseUser *user = response.users.firstObject;
+  _userID = user.localID;
+  _email = user.email;
+  _emailVerified = user.emailVerified;
+  _displayName = user.displayName;
+  _photoURL = user.photoURL;
+  _phoneNumber = user.phoneNumber;
+  _hasEmailPasswordCredential = user.passwordHash.length > 0;
+  _metadata = [[FIRUserMetadata alloc] initWithCreationDate:user.creationDate
+                                             lastSignInDate:user.lastLoginDate];
+  NSMutableDictionary<NSString *, FIRUserInfoImpl *> *providerData =
+      [NSMutableDictionary dictionary];
+  for (FIRGetAccountInfoResponseProviderUserInfo *providerUserInfo in user.providerUserInfo) {
+    FIRUserInfoImpl *userInfo =
+        [FIRUserInfoImpl userInfoWithGetAccountInfoResponseProviderUserInfo:providerUserInfo];
+    if (userInfo) {
+      providerData[providerUserInfo.providerID] = userInfo;
+    }
+  }
+  _providerData = [providerData copy];
+#if TARGET_OS_IOS
+  _multiFactor = [[FIRMultiFactor alloc] initWithMFAEnrollments:user.MFAEnrollments];
+  _multiFactor.user = self;
+#endif
+}
+
+/** @fn executeUserUpdateWithChanges:callback:
+    @brief Performs a setAccountInfo request by mutating the results of a getAccountInfo response,
+        atomically in regards to other calls to this method.
+    @param changeBlock A block responsible for mutating a template @c FIRSetAccountInfoRequest
+    @param callback A block to invoke when the change is complete. Invoked asynchronously on the
+        auth global work queue in the future.
+ */
+- (void)executeUserUpdateWithChanges:(void (^)(FIRGetAccountInfoResponseUser *,
+                                               FIRSetAccountInfoRequest *))changeBlock
+                            callback:(nonnull FIRUserProfileChangeCallback)callback {
+  [_taskQueue enqueueTask:^(FIRAuthSerialTaskCompletionBlock _Nonnull complete) {
+    [self getAccountInfoRefreshingCache:^(FIRGetAccountInfoResponseUser *_Nullable user,
+                                          NSError *_Nullable error) {
+      if (error) {
+        complete();
+        callback(error);
+        return;
+      }
+      [self
+        internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+          if (error) {
+            complete();
+            callback(error);
+            return;
+          }
+          FIRAuthRequestConfiguration *configuration = self->_auth.requestConfiguration;
+          // Mutate setAccountInfoRequest in block:
+          FIRSetAccountInfoRequest *setAccountInfoRequest =
+              [[FIRSetAccountInfoRequest alloc] initWithRequestConfiguration:configuration];
+          setAccountInfoRequest.accessToken = accessToken;
+          changeBlock(user, setAccountInfoRequest);
+          // Execute request:
+          [FIRAuthBackend
+              setAccountInfo:setAccountInfoRequest
+                    callback:^(FIRSetAccountInfoResponse *_Nullable response,
+                               NSError *_Nullable error) {
+                      if (error) {
+                        [self signOutIfTokenIsInvalidWithError:error];
+                        complete();
+                        callback(error);
+                        return;
+                      }
+                      if (response.IDToken && response.refreshToken) {
+                        FIRSecureTokenService *tokenService = [[FIRSecureTokenService alloc]
+                            initWithRequestConfiguration:configuration
+                                             accessToken:response.IDToken
+                               accessTokenExpirationDate:response.approximateExpirationDate
+                                            refreshToken:response.refreshToken];
+                        [self setTokenService:tokenService
+                                     callback:^(NSError *_Nullable error) {
+                                       complete();
+                                       callback(error);
+                                     }];
+                        return;
+                      }
+                      complete();
+                      callback(nil);
+                    }];
+        }];
+    }];
+  }];
+}
+
+/** @fn updateKeychain:
+    @brief Updates the keychain for user token or info changes.
+    @param error The error if NO is returned.
+    @return Whether the operation is successful.
+ */
+- (BOOL)updateKeychain:(NSError *_Nullable *_Nullable)error {
+  return [_auth updateKeychainWithUser:self error:error];
+}
+
+/** @fn setTokenService:callback:
+    @brief Sets a new token service for the @c FIRUser instance.
+    @param tokenService The new token service object.
+    @param callback The block to be called in the global auth working queue once finished.
+    @remarks The method makes sure the token service has access and refresh token and the new tokens
+        are saved in the keychain before calling back.
+ */
+- (void)setTokenService:(FIRSecureTokenService *)tokenService
+               callback:(nonnull CallbackWithError)callback {
+  [tokenService fetchAccessTokenForcingRefresh:NO
+                                      callback:^(NSString *_Nullable token,
+                                                 NSError *_Nullable error, BOOL tokenUpdated) {
+                                        if (error) {
+                                          callback(error);
+                                          return;
+                                        }
+                                        self->_tokenService = tokenService;
+                                        if (![self updateKeychain:&error]) {
+                                          callback(error);
+                                          return;
+                                        }
+                                        callback(nil);
+                                      }];
+}
+
+#pragma mark -
+
+/** @fn updateEmail:password:callback:
+    @brief Updates email address and/or password for the current user.
+    @remarks May fail if there is already an email/password-based account for the same email
+        address.
+    @param email The email address for the user, if to be updated.
+    @param password The new password for the user, if to be updated.
+    @param callback The block called when the user profile change has finished. Invoked
+        asynchronously on the auth global work queue in the future.
+    @remarks May fail with a @c FIRAuthErrorCodeRequiresRecentLogin error code.
+        Call @c reauthentateWithCredential:completion: beforehand to avoid this error case.
+ */
+- (void)updateEmail:(nullable NSString *)email
+           password:(nullable NSString *)password
+           callback:(nonnull FIRUserProfileChangeCallback)callback {
+  if (password && ![password length]) {
+    callback([FIRAuthErrorUtils weakPasswordErrorWithServerResponseReason:kMissingPasswordReason]);
+    return;
+  }
+  BOOL hadEmailPasswordCredential = _hasEmailPasswordCredential;
+  [self
+      executeUserUpdateWithChanges:^(FIRGetAccountInfoResponseUser *user,
+                                     FIRSetAccountInfoRequest *request) {
+        if (email) {
+          request.email = email;
+        }
+        if (password) {
+          request.password = password;
+        }
+      }
+      callback:^(NSError *error) {
+        if (error) {
+          callback(error);
+          return;
+        }
+        if (email) {
+          self->_email = [email copy];
+        }
+        if (self->_email) {
+          if (!hadEmailPasswordCredential) {
+            // The list of providers need to be updated for the newly added email-password provider.
+            [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                                 NSError *_Nullable error) {
+              if (error) {
+                callback(error);
+                return;
+              }
+              FIRAuthRequestConfiguration *requestConfiguration = self->_auth.requestConfiguration;
+              FIRGetAccountInfoRequest *getAccountInfoRequest =
+                  [[FIRGetAccountInfoRequest alloc] initWithAccessToken:accessToken
+                                                   requestConfiguration:requestConfiguration];
+              [FIRAuthBackend
+                  getAccountInfo:getAccountInfoRequest
+                        callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                   NSError *_Nullable error) {
+                          if (error) {
+                            [self signOutIfTokenIsInvalidWithError:error];
+                            callback(error);
+                            return;
+                          }
+                          for (FIRGetAccountInfoResponseUser *userAccountInfo in response.users) {
+                            // Set the account to non-anonymous if there are any providers, even if
+                            // they're not email/password ones.
+                            if (userAccountInfo.providerUserInfo.count > 0) {
+                              self.anonymous = NO;
+                            }
+                            for (FIRGetAccountInfoResponseProviderUserInfo
+                                     *providerUserInfo in userAccountInfo.providerUserInfo) {
+                              if ([providerUserInfo.providerID
+                                      isEqualToString:FIREmailAuthProviderID]) {
+                                self->_hasEmailPasswordCredential = YES;
+                                break;
+                              }
+                            }
+                          }
+                          [self updateWithGetAccountInfoResponse:response];
+                          if (![self updateKeychain:&error]) {
+                            callback(error);
+                            return;
+                          }
+                          callback(nil);
+                        }];
+            }];
+            return;
+          }
+        }
+        if (![self updateKeychain:&error]) {
+          callback(error);
+          return;
+        }
+        callback(nil);
+      }];
+}
+
+- (void)updateEmail:(NSString *)email completion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self updateEmail:email
+             password:nil
+             callback:^(NSError *_Nullable error) {
+               callInMainThreadWithError(completion, error);
+             }];
+  });
+}
+
+- (void)updatePassword:(NSString *)password
+            completion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self updateEmail:nil
+             password:password
+             callback:^(NSError *_Nullable error) {
+               callInMainThreadWithError(completion, error);
+             }];
+  });
+}
+
+#if TARGET_OS_IOS
+/** @fn internalUpdateOrLinkPhoneNumberCredential:completion:
+    @brief Updates the phone number for the user. On success, the cached user profile data is
+        updated.
+
+    @param phoneAuthCredential The new phone number credential corresponding to the phone number
+        to be added to the Firebase account, if a phone number is already linked to the account this
+        new phone number will replace it.
+    @param isLinkOperation Boolean value indicating whether or not this is a link operation.
+    @param completion Optionally; the block invoked when the user profile change has finished.
+        Invoked asynchronously on the global work queue in the future.
+ */
+- (void)internalUpdateOrLinkPhoneNumberCredential:(FIRPhoneAuthCredential *)phoneAuthCredential
+                                  isLinkOperation:(BOOL)isLinkOperation
+                                       completion:(FIRUserProfileChangeCallback)completion {
+  [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+    if (error) {
+      completion(error);
+      return;
+    }
+    FIRAuthOperationType operation =
+        isLinkOperation ? FIRAuthOperationTypeLink : FIRAuthOperationTypeUpdate;
+    FIRVerifyPhoneNumberRequest *request = [[FIRVerifyPhoneNumberRequest alloc]
+        initWithVerificationID:phoneAuthCredential.verificationID
+              verificationCode:phoneAuthCredential.verificationCode
+                     operation:operation
+          requestConfiguration:self->_auth.requestConfiguration];
+    request.accessToken = accessToken;
+    [FIRAuthBackend verifyPhoneNumber:request
+                             callback:^(FIRVerifyPhoneNumberResponse *_Nullable response,
+                                        NSError *_Nullable error) {
+                               if (error) {
+                                 [self signOutIfTokenIsInvalidWithError:error];
+                                 completion(error);
+                                 return;
+                               }
+                               FIRAuthRequestConfiguration *requestConfiguration =
+                                   self.auth.requestConfiguration;
+                               // Update the new token and refresh user info again.
+                               self->_tokenService = [[FIRSecureTokenService alloc]
+                                   initWithRequestConfiguration:requestConfiguration
+                                                    accessToken:response.IDToken
+                                      accessTokenExpirationDate:response.approximateExpirationDate
+                                                   refreshToken:response.refreshToken];
+                               // Get account info to update cached user info.
+                               [self getAccountInfoRefreshingCache:^(
+                                         FIRGetAccountInfoResponseUser *_Nullable user,
+                                         NSError *_Nullable error) {
+                                 if (error) {
+                                   [self signOutIfTokenIsInvalidWithError:error];
+                                   completion(error);
+                                   return;
+                                 }
+                                 self.anonymous = NO;
+                                 if (![self updateKeychain:&error]) {
+                                   completion(error);
+                                   return;
+                                 }
+                                 completion(nil);
+                               }];
+                             }];
+  }];
+}
+
+- (void)updatePhoneNumberCredential:(FIRPhoneAuthCredential *)phoneAuthCredential
+                         completion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self internalUpdateOrLinkPhoneNumberCredential:phoneAuthCredential
+                                    isLinkOperation:NO
+                                         completion:^(NSError *_Nullable error) {
+                                           callInMainThreadWithError(completion, error);
+                                         }];
+  });
+}
+#endif
+
+- (FIRUserProfileChangeRequest *)profileChangeRequest {
+  __block FIRUserProfileChangeRequest *result;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = [[FIRUserProfileChangeRequest alloc] initWithUser:self];
+  });
+  return result;
+}
+
+- (void)setDisplayName:(NSString *)displayName {
+  _displayName = [displayName copy];
+}
+
+- (void)setPhotoURL:(NSURL *)photoURL {
+  _photoURL = [photoURL copy];
+}
+
+- (NSString *)rawAccessToken {
+  return _tokenService.rawAccessToken;
+}
+
+- (NSDate *)accessTokenExpirationDate {
+  return _tokenService.accessTokenExpirationDate;
+}
+
+#pragma mark -
+
+- (void)reloadWithCompletion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self getAccountInfoRefreshingCache:^(FIRGetAccountInfoResponseUser *_Nullable user,
+                                          NSError *_Nullable error) {
+      callInMainThreadWithError(completion, error);
+    }];
+  });
+}
+
+#pragma mark -
+
+- (void)reauthenticateWithCredential:(FIRAuthCredential *)credential
+                          completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self->_auth
+        internalSignInAndRetrieveDataWithCredential:credential
+                                 isReauthentication:YES
+                                           callback:^(FIRAuthDataResult *_Nullable authResult,
+                                                      NSError *_Nullable error) {
+                                             if (error) {
+                                               // If "user not found" error returned by backend,
+                                               // translate to user mismatch error which is more
+                                               // accurate.
+                                               if (error.code == FIRAuthErrorCodeUserNotFound) {
+                                                 error = [FIRAuthErrorUtils userMismatchError];
+                                               }
+                                               callInMainThreadWithAuthDataResultAndError(
+                                                   completion, authResult, error);
+                                               return;
+                                             }
+                                             if (![authResult.user.uid
+                                                     isEqual:[self->_auth getUserID]]) {
+                                               callInMainThreadWithAuthDataResultAndError(
+                                                   completion, authResult,
+                                                   [FIRAuthErrorUtils userMismatchError]);
+                                               return;
+                                             }
+                                             // Successful reauthenticate
+                                             [self
+                                               setTokenService:authResult.user->_tokenService
+                                                      callback:^(NSError *_Nullable error) {
+                                                        callInMainThreadWithAuthDataResultAndError(
+                                                            completion, authResult, error);
+                                                      }];
+                                           }];
+  });
+}
+
+- (void)reauthenticateWithProvider:(id<FIRFederatedAuthProvider>)provider
+                        UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+                        completion:(nullable FIRAuthDataResultCallback)completion {
+#if TARGET_OS_IOS
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [provider getCredentialWithUIDelegate:UIDelegate
+                               completion:^(FIRAuthCredential *_Nullable credential,
+                                            NSError *_Nullable error) {
+                                 [self reauthenticateWithCredential:credential
+                                                         completion:completion];
+                               }];
+  });
+#endif  // TARGET_OS_IOS
+}
+
+- (nullable NSString *)refreshToken {
+  __block NSString *result;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    result = self->_tokenService.refreshToken;
+  });
+  return result;
+}
+
+- (void)getIDTokenWithCompletion:(nullable FIRAuthTokenCallback)completion {
+  // |getIDTokenForcingRefresh:completion:| is also a public API so there is no need to dispatch to
+  // global work queue here.
+  [self getIDTokenForcingRefresh:NO completion:completion];
+}
+
+- (void)getIDTokenForcingRefresh:(BOOL)forceRefresh
+                      completion:(nullable FIRAuthTokenCallback)completion {
+  [self getIDTokenResultForcingRefresh:forceRefresh
+                            completion:^(FIRAuthTokenResult *_Nullable tokenResult,
+                                         NSError *_Nullable error) {
+                              if (completion) {
+                                dispatch_async(dispatch_get_main_queue(), ^{
+                                  completion(tokenResult.token, error);
+                                });
+                              }
+                            }];
+}
+
+- (void)getIDTokenResultWithCompletion:(nullable FIRAuthTokenResultCallback)completion {
+  [self getIDTokenResultForcingRefresh:NO
+                            completion:^(FIRAuthTokenResult *_Nullable tokenResult,
+                                         NSError *_Nullable error) {
+                              if (completion) {
+                                dispatch_async(dispatch_get_main_queue(), ^{
+                                  completion(tokenResult, error);
+                                });
+                              }
+                            }];
+}
+
+- (void)getIDTokenResultForcingRefresh:(BOOL)forceRefresh
+                            completion:(nullable FIRAuthTokenResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self
+        internalGetTokenForcingRefresh:forceRefresh
+                              callback:^(NSString *_Nullable token, NSError *_Nullable error) {
+                                FIRAuthTokenResult *tokenResult;
+                                if (token) {
+                                  tokenResult = [FIRAuthTokenResult tokenResultWithToken:token];
+                                  FIRLogDebug(kFIRLoggerAuth, @"I-AUT000017",
+                                              @"Actual token expiration date: %@, current date: %@",
+                                              tokenResult.expirationDate, [NSDate date]);
+                                }
+                                if (completion) {
+                                  dispatch_async(dispatch_get_main_queue(), ^{
+                                    completion(tokenResult, error);
+                                  });
+                                }
+                              }];
+  });
+}
+
+/** @fn parseIDToken:error:
+    @brief Parses the provided IDToken and returns an instance of FIRAuthTokenResult containing
+        claims obtained from the IDToken.
+
+    @param token The raw text of the Firebase IDToken encoded in base64.
+    @param error An out parameter which would contain any error that occurs during parsing.
+    @return An instance of FIRAuthTokenResult containing claims obtained from the IDToken.
+
+    @remarks IDToken returned from the backend in some cases is of a length that is not a multiple
+        of 4. In these cases this function pads the token with as many "=" characters as needed and
+        then attempts to parse the token. If the token cannot be parsed an error is returned via the
+        "error" out parameter.
+ */
+- (nullable FIRAuthTokenResult *)parseIDToken:(NSString *)token error:(NSError **)error {
+  // Though this is an internal method, errors returned here are surfaced in user-visible
+  // callbacks.
+  if (error) {
+    *error = nil;
+  }
+  NSArray *tokenStringArray = [token componentsSeparatedByString:@"."];
+
+  // The JWT should have three parts, though we only use the second in this method.
+  if (tokenStringArray.count != 3) {
+    if (error) {
+      *error = [FIRAuthErrorUtils malformedJWTErrorWithToken:token underlyingError:nil];
+    }
+    return nil;
+  }
+
+  // The token payload is always the second index of the array.
+  NSString *IDToken = tokenStringArray[1];
+
+  // Convert the base64URL encoded string to a base64 encoded string.
+  // Replace "_" with "/"
+  NSMutableString *tokenPayload = [[IDToken stringByReplacingOccurrencesOfString:@"_"
+                                                                      withString:@"/"] mutableCopy];
+
+  // Replace "-" with "+"
+  [tokenPayload replaceOccurrencesOfString:@"-"
+                                withString:@"+"
+                                   options:kNilOptions
+                                     range:NSMakeRange(0, tokenPayload.length)];
+
+  // Pad the token payload with "=" signs if the payload's length is not a multiple of 4.
+  while ((tokenPayload.length % 4) != 0) {
+    [tokenPayload appendFormat:@"="];
+  }
+  NSData *decodedTokenPayloadData =
+      [[NSData alloc] initWithBase64EncodedString:tokenPayload
+                                          options:NSDataBase64DecodingIgnoreUnknownCharacters];
+  if (!decodedTokenPayloadData) {
+    if (error) {
+      *error = [FIRAuthErrorUtils malformedJWTErrorWithToken:token underlyingError:nil];
+    }
+    return nil;
+  }
+  NSError *jsonError = nil;
+  NSJSONReadingOptions options = NSJSONReadingMutableContainers | NSJSONReadingAllowFragments;
+  NSDictionary *tokenPayloadDictionary =
+      [NSJSONSerialization JSONObjectWithData:decodedTokenPayloadData
+                                      options:options
+                                        error:&jsonError];
+  if (jsonError != nil) {
+    if (error) {
+      *error = [FIRAuthErrorUtils malformedJWTErrorWithToken:token underlyingError:jsonError];
+    }
+    return nil;
+  }
+
+  if (!tokenPayloadDictionary) {
+    if (error) {
+      *error = [FIRAuthErrorUtils malformedJWTErrorWithToken:token underlyingError:nil];
+    }
+    return nil;
+  }
+
+  FIRAuthTokenResult *result = [FIRAuthTokenResult tokenResultWithToken:token];
+  return result;
+}
+
+/** @fn internalGetTokenForcingRefresh:callback:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+    @param callback The block to invoke when the token is available. Invoked asynchronously on the
+        global work thread in the future.
+ */
+- (void)internalGetTokenWithCallback:(nonnull FIRAuthTokenCallback)callback {
+  [self internalGetTokenForcingRefresh:NO callback:callback];
+}
+
+- (void)internalGetTokenForcingRefresh:(BOOL)forceRefresh
+                              callback:(nonnull FIRAuthTokenCallback)callback {
+  [_tokenService fetchAccessTokenForcingRefresh:forceRefresh
+                                       callback:^(NSString *_Nullable token,
+                                                  NSError *_Nullable error, BOOL tokenUpdated) {
+                                         if (error) {
+                                           [self signOutIfTokenIsInvalidWithError:error];
+                                           callback(nil, error);
+                                           return;
+                                         }
+                                         if (tokenUpdated) {
+                                           if (![self updateKeychain:&error]) {
+                                             callback(nil, error);
+                                             return;
+                                           }
+                                         }
+                                         callback(token, nil);
+                                       }];
+}
+
+- (void)sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
+                                      completion:(nullable FIRAuthVoidErrorCallback)completion {
+  [self internalVerifyBeforeUpdateEmailWithNewEmail:email
+                                 actionCodeSettings:nil
+                                         completion:completion];
+}
+
+- (void)sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
+                              actionCodeSettings:(nonnull FIRActionCodeSettings *)actionCodeSettings
+                                      completion:(nullable FIRAuthVoidErrorCallback)completion {
+  [self internalVerifyBeforeUpdateEmailWithNewEmail:email
+                                 actionCodeSettings:actionCodeSettings
+                                         completion:completion];
+}
+
+- (void)internalVerifyBeforeUpdateEmailWithNewEmail:(NSString *)newEmail
+                                 actionCodeSettings:
+                                     (nullable FIRActionCodeSettings *)actionCodeSettings
+                                         completion:(FIRVerifyBeforeUpdateEmailCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self
+        internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+          if (error) {
+            callInMainThreadWithError(completion, error);
+            return;
+          }
+          FIRAuthRequestConfiguration *configuration = self->_auth.requestConfiguration;
+          FIRActionCodeSettings *settings = actionCodeSettings;
+          FIRGetOOBConfirmationCodeRequest *request = [FIRGetOOBConfirmationCodeRequest
+              verifyBeforeUpdateEmailWithAccessToken:accessToken
+                                            newEmail:newEmail
+                                  actionCodeSettings:settings
+                                requestConfiguration:configuration];
+          [FIRAuthBackend
+              getOOBConfirmationCode:request
+                            callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
+                                       NSError *_Nullable error) {
+                              callInMainThreadWithError(completion, error);
+                            }];
+        }];
+  });
+}
+
+- (void)linkWithCredential:(FIRAuthCredential *)credential
+                completion:(nullable FIRAuthDataResultCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    if (self->_providerData[credential.provider]) {
+      callInMainThreadWithAuthDataResultAndError(completion, nil,
+                                                 [FIRAuthErrorUtils providerAlreadyLinkedError]);
+      return;
+    }
+    FIRAuthDataResult *result = [[FIRAuthDataResult alloc] initWithUser:self
+                                                     additionalUserInfo:nil];
+    if ([credential isKindOfClass:[FIREmailPasswordAuthCredential class]]) {
+      if (self->_hasEmailPasswordCredential) {
+        callInMainThreadWithAuthDataResultAndError(completion, nil,
+                                                   [FIRAuthErrorUtils providerAlreadyLinkedError]);
+        return;
+      }
+      FIREmailPasswordAuthCredential *emailPasswordCredential =
+          (FIREmailPasswordAuthCredential *)credential;
+      if (emailPasswordCredential.password) {
+        [self updateEmail:emailPasswordCredential.email
+                 password:emailPasswordCredential.password
+                 callback:^(NSError *error) {
+                   if (error) {
+                     callInMainThreadWithAuthDataResultAndError(completion, nil, error);
+                   } else {
+                     callInMainThreadWithAuthDataResultAndError(completion, result, nil);
+                   }
+                 }];
+      } else {
+        [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                             NSError *_Nullable error) {
+          NSDictionary<NSString *, NSString *> *queryItems =
+              [FIRAuthWebUtils parseURL:emailPasswordCredential.link];
+          if (![queryItems count]) {
+            NSURLComponents *urlComponents =
+                [NSURLComponents componentsWithString:emailPasswordCredential.link];
+            queryItems = [FIRAuthWebUtils parseURL:urlComponents.query];
+          }
+          NSString *actionCode = queryItems[@"oobCode"];
+          FIRAuthRequestConfiguration *requestConfiguration = self.auth.requestConfiguration;
+          FIREmailLinkSignInRequest *request =
+              [[FIREmailLinkSignInRequest alloc] initWithEmail:emailPasswordCredential.email
+                                                       oobCode:actionCode
+                                          requestConfiguration:requestConfiguration];
+          request.IDToken = accessToken;
+          [FIRAuthBackend
+              emailLinkSignin:request
+                     callback:^(FIREmailLinkSignInResponse *_Nullable response,
+                                NSError *_Nullable error) {
+                       if (error) {
+                         callInMainThreadWithAuthDataResultAndError(completion, nil, error);
+                       } else {
+                         // Update the new token and refresh user info again.
+                         self->_tokenService = [[FIRSecureTokenService alloc]
+                             initWithRequestConfiguration:requestConfiguration
+                                              accessToken:response.IDToken
+                                accessTokenExpirationDate:response.approximateExpirationDate
+                                             refreshToken:response.refreshToken];
+                         [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                                              NSError *_Nullable error) {
+                           if (error) {
+                             callInMainThreadWithAuthDataResultAndError(completion, nil, error);
+                             return;
+                           }
+
+                           FIRGetAccountInfoRequest *getAccountInfoRequest =
+                               [[FIRGetAccountInfoRequest alloc]
+                                    initWithAccessToken:accessToken
+                                   requestConfiguration:requestConfiguration];
+                           [FIRAuthBackend
+                               getAccountInfo:getAccountInfoRequest
+                                     callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                                NSError *_Nullable error) {
+                                       if (error) {
+                                         [self signOutIfTokenIsInvalidWithError:error];
+                                         callInMainThreadWithAuthDataResultAndError(completion, nil,
+                                                                                    error);
+                                         return;
+                                       }
+                                       self.anonymous = NO;
+                                       [self updateWithGetAccountInfoResponse:response];
+                                       if (![self updateKeychain:&error]) {
+                                         callInMainThreadWithAuthDataResultAndError(completion, nil,
+                                                                                    error);
+                                         return;
+                                       }
+                                       callInMainThreadWithAuthDataResultAndError(completion,
+                                                                                  result, nil);
+                                     }];
+                         }];
+                       }
+                     }];
+        }];
+      }
+      return;
+    }
+
+    if ([credential isKindOfClass:[FIRGameCenterAuthCredential class]]) {
+      FIRGameCenterAuthCredential *gameCenterCredential = (FIRGameCenterAuthCredential *)credential;
+      [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                           NSError *_Nullable error) {
+        FIRAuthRequestConfiguration *requestConfiguration = self.auth.requestConfiguration;
+        FIRSignInWithGameCenterRequest *gameCenterRequest = [[FIRSignInWithGameCenterRequest alloc]
+                initWithPlayerID:gameCenterCredential.playerID
+                    publicKeyURL:gameCenterCredential.publicKeyURL
+                       signature:gameCenterCredential.signature
+                            salt:gameCenterCredential.salt
+                       timestamp:gameCenterCredential.timestamp
+                     displayName:gameCenterCredential.displayName
+            requestConfiguration:requestConfiguration];
+        gameCenterRequest.accessToken = accessToken;
+
+        [FIRAuthBackend
+            signInWithGameCenter:gameCenterRequest
+                        callback:^(FIRSignInWithGameCenterResponse *_Nullable response,
+                                   NSError *_Nullable error) {
+                          if (error) {
+                            callInMainThreadWithAuthDataResultAndError(completion, nil, error);
+                          } else {
+                            // Update the new token and refresh user info again.
+                            self->_tokenService = [[FIRSecureTokenService alloc]
+                                initWithRequestConfiguration:requestConfiguration
+                                                 accessToken:response.IDToken
+                                   accessTokenExpirationDate:response.approximateExpirationDate
+                                                refreshToken:response.refreshToken];
+                            [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                                                 NSError *_Nullable error) {
+                              if (error) {
+                                callInMainThreadWithAuthDataResultAndError(completion, nil, error);
+                                return;
+                              }
+
+                              FIRGetAccountInfoRequest *getAccountInfoRequest =
+                                  [[FIRGetAccountInfoRequest alloc]
+                                       initWithAccessToken:accessToken
+                                      requestConfiguration:requestConfiguration];
+                              [FIRAuthBackend
+                                  getAccountInfo:getAccountInfoRequest
+                                        callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                                   NSError *_Nullable error) {
+                                          if (error) {
+                                            [self signOutIfTokenIsInvalidWithError:error];
+                                            callInMainThreadWithAuthDataResultAndError(completion,
+                                                                                       nil, error);
+                                            return;
+                                          }
+                                          self.anonymous = NO;
+                                          [self updateWithGetAccountInfoResponse:response];
+                                          if (![self updateKeychain:&error]) {
+                                            callInMainThreadWithAuthDataResultAndError(completion,
+                                                                                       nil, error);
+                                            return;
+                                          }
+                                          callInMainThreadWithAuthDataResultAndError(completion,
+                                                                                     result, nil);
+                                        }];
+                            }];
+                          }
+                        }];
+      }];
+      return;
+    }
+
+#if TARGET_OS_IOS
+    if ([credential isKindOfClass:[FIRPhoneAuthCredential class]]) {
+      FIRPhoneAuthCredential *phoneAuthCredential = (FIRPhoneAuthCredential *)credential;
+      [self internalUpdateOrLinkPhoneNumberCredential:phoneAuthCredential
+                                      isLinkOperation:YES
+                                           completion:^(NSError *_Nullable error) {
+                                             if (error) {
+                                               callInMainThreadWithAuthDataResultAndError(
+                                                   completion, nil, error);
+                                             } else {
+                                               callInMainThreadWithAuthDataResultAndError(
+                                                   completion, result, nil);
+                                             }
+                                           }];
+      return;
+    }
+#endif
+
+    [self->_taskQueue enqueueTask:^(FIRAuthSerialTaskCompletionBlock _Nonnull complete) {
+      CallbackWithAuthDataResultAndError completeWithError =
+          ^(FIRAuthDataResult *result, NSError *error) {
+            complete();
+            callInMainThreadWithAuthDataResultAndError(completion, result, error);
+          };
+      [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                           NSError *_Nullable error) {
+        if (error) {
+          completeWithError(nil, error);
+          return;
+        }
+        FIRAuthRequestConfiguration *requestConfiguration = self->_auth.requestConfiguration;
+        FIRVerifyAssertionRequest *request =
+            [[FIRVerifyAssertionRequest alloc] initWithProviderID:credential.provider
+                                             requestConfiguration:requestConfiguration];
+        [credential prepareVerifyAssertionRequest:request];
+        request.accessToken = accessToken;
+        [FIRAuthBackend
+            verifyAssertion:request
+                   callback:^(FIRVerifyAssertionResponse *response, NSError *error) {
+                     if (error) {
+                       [self signOutIfTokenIsInvalidWithError:error];
+                       completeWithError(nil, error);
+                       return;
+                     }
+                     FIRAdditionalUserInfo *additionalUserInfo =
+                         [FIRAdditionalUserInfo userInfoWithVerifyAssertionResponse:response];
+                     FIROAuthCredential *updatedOAuthCredential =
+                         [[FIROAuthCredential alloc] initWithVerifyAssertionResponse:response];
+                     FIRAuthDataResult *result =
+                         [[FIRAuthDataResult alloc] initWithUser:self
+                                              additionalUserInfo:additionalUserInfo
+                                                      credential:updatedOAuthCredential];
+                     // Update the new token and refresh user info again.
+                     self->_tokenService = [[FIRSecureTokenService alloc]
+                         initWithRequestConfiguration:requestConfiguration
+                                          accessToken:response.IDToken
+                            accessTokenExpirationDate:response.approximateExpirationDate
+                                         refreshToken:response.refreshToken];
+                     [self internalGetTokenWithCallback:^(NSString *_Nullable accessToken,
+                                                          NSError *_Nullable error) {
+                       if (error) {
+                         completeWithError(nil, error);
+                         return;
+                       }
+                       FIRGetAccountInfoRequest *getAccountInfoRequest =
+                           [[FIRGetAccountInfoRequest alloc]
+                                initWithAccessToken:accessToken
+                               requestConfiguration:requestConfiguration];
+                       [FIRAuthBackend
+                           getAccountInfo:getAccountInfoRequest
+                                 callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                            NSError *_Nullable error) {
+                                   if (error) {
+                                     [self signOutIfTokenIsInvalidWithError:error];
+                                     completeWithError(nil, error);
+                                     return;
+                                   }
+                                   self.anonymous = NO;
+                                   [self updateWithGetAccountInfoResponse:response];
+                                   if (![self updateKeychain:&error]) {
+                                     completeWithError(nil, error);
+                                     return;
+                                   }
+                                   completeWithError(result, nil);
+                                 }];
+                     }];
+                   }];
+      }];
+    }];
+  });
+}
+
+- (void)linkWithProvider:(id<FIRFederatedAuthProvider>)provider
+              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+              completion:(nullable FIRAuthDataResultCallback)completion {
+#if TARGET_OS_IOS
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [provider getCredentialWithUIDelegate:UIDelegate
+                               completion:^(FIRAuthCredential *_Nullable credential,
+                                            NSError *_Nullable error) {
+                                 [self linkWithCredential:credential completion:completion];
+                               }];
+  });
+#endif  // TARGET_OS_IOS
+}
+
+- (void)unlinkFromProvider:(NSString *)provider
+                completion:(nullable FIRAuthResultCallback)completion {
+  [_taskQueue enqueueTask:^(FIRAuthSerialTaskCompletionBlock _Nonnull complete) {
+    CallbackWithError completeAndCallbackWithError = ^(NSError *error) {
+      complete();
+      callInMainThreadWithUserAndError(completion, self, error);
+    };
+    [self
+        internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+          if (error) {
+            completeAndCallbackWithError(error);
+            return;
+          }
+          FIRAuthRequestConfiguration *requestConfiguration = self->_auth.requestConfiguration;
+          FIRSetAccountInfoRequest *setAccountInfoRequest =
+              [[FIRSetAccountInfoRequest alloc] initWithRequestConfiguration:requestConfiguration];
+          setAccountInfoRequest.accessToken = accessToken;
+
+          if (!self->_providerData[provider]) {
+            completeAndCallbackWithError([FIRAuthErrorUtils noSuchProviderError]);
+            return;
+          }
+          setAccountInfoRequest.deleteProviders = @[ provider ];
+
+          [FIRAuthBackend
+              setAccountInfo:setAccountInfoRequest
+                    callback:^(FIRSetAccountInfoResponse *_Nullable response,
+                               NSError *_Nullable error) {
+                      if (error) {
+                        [self signOutIfTokenIsInvalidWithError:error];
+                        completeAndCallbackWithError(error);
+                        return;
+                      }
+
+                      // We can't just use the provider info objects in FIRSetAccountInfoResponse
+                      // because they don't have localID and email fields. Remove the specific
+                      // provider manually.
+                      NSMutableDictionary *mutableProviderData = [self->_providerData mutableCopy];
+                      [mutableProviderData removeObjectForKey:provider];
+                      self->_providerData = [mutableProviderData copy];
+
+                      if ([provider isEqualToString:FIREmailAuthProviderID]) {
+                        self->_hasEmailPasswordCredential = NO;
+                      }
+#if TARGET_OS_IOS
+                      // After successfully unlinking a phone auth provider, remove the phone number
+                      // from the cached user info.
+                      if ([provider isEqualToString:FIRPhoneAuthProviderID]) {
+                        self->_phoneNumber = nil;
+                      }
+#endif
+
+                      if (response.IDToken && response.refreshToken) {
+                        FIRSecureTokenService *tokenService = [[FIRSecureTokenService alloc]
+                            initWithRequestConfiguration:requestConfiguration
+                                             accessToken:response.IDToken
+                               accessTokenExpirationDate:response.approximateExpirationDate
+                                            refreshToken:response.refreshToken];
+                        [self setTokenService:tokenService
+                                     callback:^(NSError *_Nullable error) {
+                                       completeAndCallbackWithError(error);
+                                     }];
+                        return;
+                      }
+                      if (![self updateKeychain:&error]) {
+                        completeAndCallbackWithError(error);
+                        return;
+                      }
+                      completeAndCallbackWithError(nil);
+                    }];
+        }];
+  }];
+}
+
+- (void)sendEmailVerificationWithCompletion:(nullable FIRSendEmailVerificationCallback)completion {
+  [self sendEmailVerificationWithNullableActionCodeSettings:nil completion:completion];
+}
+
+- (void)sendEmailVerificationWithActionCodeSettings:(FIRActionCodeSettings *)actionCodeSettings
+                                         completion:
+                                             (nullable FIRSendEmailVerificationCallback)completion {
+  [self sendEmailVerificationWithNullableActionCodeSettings:actionCodeSettings
+                                                 completion:completion];
+}
+
+/** @fn sendEmailVerificationWithNullableActionCodeSettings:completion:
+    @brief Initiates email verification for the user.
+
+    @param actionCodeSettings Optionally, a @c FIRActionCodeSettings object containing settings
+        related to the handling action codes.
+ */
+- (void)sendEmailVerificationWithNullableActionCodeSettings:
+            (nullable FIRActionCodeSettings *)actionCodeSettings
+                                                 completion:
+                                                     (nullable FIRSendEmailVerificationCallback)
+                                                         completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self
+        internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+          if (error) {
+            callInMainThreadWithError(completion, error);
+            return;
+          }
+          FIRAuthRequestConfiguration *configuration = self->_auth.requestConfiguration;
+          FIRGetOOBConfirmationCodeRequest *request =
+              [FIRGetOOBConfirmationCodeRequest verifyEmailRequestWithAccessToken:accessToken
+                                                               actionCodeSettings:actionCodeSettings
+                                                             requestConfiguration:configuration];
+          [FIRAuthBackend
+              getOOBConfirmationCode:request
+                            callback:^(FIRGetOOBConfirmationCodeResponse *_Nullable response,
+                                       NSError *_Nullable error) {
+                              [self signOutIfTokenIsInvalidWithError:error];
+                              callInMainThreadWithError(completion, error);
+                            }];
+        }];
+  });
+}
+
+- (void)deleteWithCompletion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^{
+    [self
+        internalGetTokenWithCallback:^(NSString *_Nullable accessToken, NSError *_Nullable error) {
+          if (error) {
+            callInMainThreadWithError(completion, error);
+            return;
+          }
+          FIRDeleteAccountRequest *deleteUserRequest =
+              [[FIRDeleteAccountRequest alloc] initWitLocalID:self->_userID
+                                                  accessToken:accessToken
+                                         requestConfiguration:self->_auth.requestConfiguration];
+          [FIRAuthBackend deleteAccount:deleteUserRequest
+                               callback:^(NSError *_Nullable error) {
+                                 if (error) {
+                                   callInMainThreadWithError(completion, error);
+                                   return;
+                                 }
+                                 if (![self->_auth signOutByForceWithUserID:self->_userID
+                                                                      error:&error]) {
+                                   callInMainThreadWithError(completion, error);
+                                   return;
+                                 }
+                                 callInMainThreadWithError(completion, error);
+                               }];
+        }];
+  });
+}
+
+/** @fn signOutIfTokenIsInvalidWithError:
+    @brief Signs out this user if the user or the token is invalid.
+    @param error The error from the server.
+ */
+- (void)signOutIfTokenIsInvalidWithError:(nullable NSError *)error {
+  NSInteger errorCode = error.code;
+  if (errorCode == FIRAuthErrorCodeUserNotFound || errorCode == FIRAuthErrorCodeUserDisabled ||
+      errorCode == FIRAuthErrorCodeInvalidUserToken ||
+      errorCode == FIRAuthErrorCodeUserTokenExpired) {
+    FIRLogNotice(kFIRLoggerAuth, @"I-AUT000016",
+                 @"Invalid user token detected, user is automatically signed out.");
+    [_auth signOutByForceWithUserID:_userID error:NULL];
+  }
+}
+
+@end
+
+@implementation FIRUserProfileChangeRequest {
+  /** @var _user
+      @brief The user associated with the change request.
+   */
+  FIRUser *_user;
+
+  /** @var _displayName
+      @brief The display name value to set if @c _displayNameSet is YES.
+   */
+  NSString *_displayName;
+
+  /** @var _displayNameSet
+      @brief Indicates the display name should be part of the change request.
+   */
+  BOOL _displayNameSet;
+
+  /** @var _photoURL
+      @brief The photo URL value to set if @c _displayNameSet is YES.
+   */
+  NSURL *_photoURL;
+
+  /** @var _photoURLSet
+      @brief Indicates the photo URL should be part of the change request.
+   */
+  BOOL _photoURLSet;
+
+  /** @var _consumed
+      @brief Indicates the @c commitChangesWithCallback: method has already been invoked.
+   */
+  BOOL _consumed;
+}
+
+- (nullable instancetype)initWithUser:(FIRUser *)user {
+  self = [super init];
+  if (self) {
+    _user = user;
+  }
+  return self;
+}
+
+- (nullable NSString *)displayName {
+  return _displayName;
+}
+
+- (void)setDisplayName:(nullable NSString *)displayName {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    if (self->_consumed) {
+      [NSException
+           raise:NSInternalInconsistencyException
+          format:@"%@", @"Invalid call to setDisplayName: after commitChangesWithCallback:."];
+      return;
+    }
+    self->_displayNameSet = YES;
+    self->_displayName = [displayName copy];
+  });
+}
+
+- (nullable NSURL *)photoURL {
+  return _photoURL;
+}
+
+- (void)setPhotoURL:(nullable NSURL *)photoURL {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    if (self->_consumed) {
+      [NSException raise:NSInternalInconsistencyException
+                  format:@"%@", @"Invalid call to setPhotoURL: after commitChangesWithCallback:."];
+      return;
+    }
+    self->_photoURLSet = YES;
+    self->_photoURL = [photoURL copy];
+  });
+}
+
+/** @fn hasUpdates
+    @brief Indicates at least one field has a value which needs to be committed.
+ */
+- (BOOL)hasUpdates {
+  return _displayNameSet || _photoURLSet;
+}
+
+- (void)commitChangesWithCompletion:(nullable FIRUserProfileChangeCallback)completion {
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^{
+    if (self->_consumed) {
+      [NSException raise:NSInternalInconsistencyException
+                  format:@"%@", @"commitChangesWithCallback: should only be called once."];
+      return;
+    }
+    self->_consumed = YES;
+    // Return fast if there is nothing to update:
+    if (![self hasUpdates]) {
+      callInMainThreadWithError(completion, nil);
+      return;
+    }
+    NSString *displayName = [self->_displayName copy];
+    BOOL displayNameWasSet = self->_displayNameSet;
+    NSURL *photoURL = [self->_photoURL copy];
+    BOOL photoURLWasSet = self->_photoURLSet;
+    [self->_user
+        executeUserUpdateWithChanges:^(FIRGetAccountInfoResponseUser *user,
+                                       FIRSetAccountInfoRequest *request) {
+          if (photoURLWasSet) {
+            request.photoURL = photoURL;
+          }
+          if (displayNameWasSet) {
+            request.displayName = displayName;
+          }
+        }
+        callback:^(NSError *_Nullable error) {
+          if (error) {
+            callInMainThreadWithError(completion, error);
+            return;
+          }
+          if (displayNameWasSet) {
+            [self->_user setDisplayName:displayName];
+          }
+          if (photoURLWasSet) {
+            [self->_user setPhotoURL:photoURL];
+          }
+          if (![self->_user updateKeychain:&error]) {
+            callInMainThreadWithError(completion, error);
+            return;
+          }
+          callInMainThreadWithError(completion, nil);
+        }];
+  });
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.h
new file mode 100644
index 0000000..8d6b377
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.h	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserInfo.h"
+
+@class FIRGetAccountInfoResponseProviderUserInfo;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRUserInfoImpl : NSObject <FIRUserInfo, NSSecureCoding>
+
+/** @fn userInfoWithGetAccountInfoResponseProviderUserInfo:
+    @brief A convenience factory method for constructing a @c FIRUserInfo instance from data
+        returned by the getAccountInfo endpoint.
+    @param providerUserInfo Data returned by the getAccountInfo endpoint.
+    @return A new instance of @c FIRUserInfo using data from the getAccountInfo endpoint.
+ */
++ (nullable instancetype)userInfoWithGetAccountInfoResponseProviderUserInfo:
+    (FIRGetAccountInfoResponseProviderUserInfo *)providerUserInfo;
+
+/** @fn init
+    @brief This class should not be initialized manually.
+    @see FIRUser.providerData
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn initWithProviderID:userID:displayName:photoURL:email:
+    @brief Designated initializer.
+    @param providerID The provider identifier.
+    @param userID The unique user ID for the user (the value of the @c uid field in the token.)
+    @param displayName The name of the user.
+    @param photoURL The URL of the user's profile photo.
+    @param email The user's email address.
+    @param phoneNumber The user's phone number.
+ */
+- (nullable instancetype)initWithProviderID:(NSString *)providerID
+                                     userID:(NSString *)userID
+                                displayName:(nullable NSString *)displayName
+                                   photoURL:(nullable NSURL *)photoURL
+                                      email:(nullable NSString *)email
+                                phoneNumber:(nullable NSString *)phoneNumber
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.m
new file mode 100644
index 0000000..5092606
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserInfoImpl.m	
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/User/FIRUserInfoImpl.h"
+
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetAccountInfoResponse.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var kProviderIDCodingKey
+    @brief The key used to encode the providerID property for NSSecureCoding.
+ */
+static NSString *const kProviderIDCodingKey = @"providerID";
+
+/** @var kUserIDCodingKey
+    @brief The key used to encode the userID property for NSSecureCoding.
+ */
+static NSString *const kUserIDCodingKey = @"userID";
+
+/** @var kDisplayNameCodingKey
+    @brief The key used to encode the displayName property for NSSecureCoding.
+ */
+static NSString *const kDisplayNameCodingKey = @"displayName";
+
+/** @var kProfileURLCodingKey
+    @brief The key used to encode the profileURL property for NSSecureCoding.
+ */
+static NSString *const kProfileURLCodingKey = @"profileURL";
+
+/** @var kPhotoURLCodingKey
+    @brief The key used to encode the photoURL property for NSSecureCoding.
+ */
+static NSString *const kPhotoURLCodingKey = @"photoURL";
+
+/** @var kEmailCodingKey
+    @brief The key used to encode the email property for NSSecureCoding.
+ */
+static NSString *const kEmailCodingKey = @"email";
+
+/** @var kPhoneNumberCodingKey
+    @brief The key used to encode the phoneNumber property for NSSecureCoding.
+ */
+static NSString *const kPhoneNumberCodingKey = @"phoneNumber";
+
+@implementation FIRUserInfoImpl
+
+@synthesize providerID = _providerID;
+@synthesize uid = _userID;
+@synthesize displayName = _displayName;
+@synthesize photoURL = _photoURL;
+@synthesize email = _email;
+@synthesize phoneNumber = _phoneNumber;
+
++ (nullable instancetype)userInfoWithGetAccountInfoResponseProviderUserInfo:
+    (FIRGetAccountInfoResponseProviderUserInfo *)providerUserInfo {
+  return [[self alloc] initWithProviderID:providerUserInfo.providerID
+                                   userID:providerUserInfo.federatedID
+                              displayName:providerUserInfo.displayName
+                                 photoURL:providerUserInfo.photoURL
+                                    email:providerUserInfo.email
+                              phoneNumber:providerUserInfo.phoneNumber];
+}
+
+- (nullable instancetype)initWithProviderID:(NSString *)providerID
+                                     userID:(NSString *)userID
+                                displayName:(nullable NSString *)displayName
+                                   photoURL:(nullable NSURL *)photoURL
+                                      email:(nullable NSString *)email
+                                phoneNumber:(nullable NSString *)phoneNumber {
+  self = [super init];
+  if (self) {
+    _providerID = [providerID copy];
+    _userID = [userID copy];
+    _displayName = [displayName copy];
+    _photoURL = [photoURL copy];
+    _email = [email copy];
+    _phoneNumber = [phoneNumber copy];
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSString *providerID = [aDecoder decodeObjectOfClass:[NSString class]
+                                                forKey:kProviderIDCodingKey];
+  NSString *userID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kUserIDCodingKey];
+  NSString *displayName = [aDecoder decodeObjectOfClass:[NSString class]
+                                                 forKey:kDisplayNameCodingKey];
+  NSURL *photoURL = [aDecoder decodeObjectOfClass:[NSURL class] forKey:kPhotoURLCodingKey];
+  NSString *email = [aDecoder decodeObjectOfClass:[NSString class] forKey:kEmailCodingKey];
+  NSString *phoneNumber = [aDecoder decodeObjectOfClass:[NSString class]
+                                                 forKey:kPhoneNumberCodingKey];
+
+  return [self initWithProviderID:providerID
+                           userID:userID
+                      displayName:displayName
+                         photoURL:photoURL
+                            email:email
+                      phoneNumber:phoneNumber];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_providerID forKey:kProviderIDCodingKey];
+  [aCoder encodeObject:_userID forKey:kUserIDCodingKey];
+  [aCoder encodeObject:_displayName forKey:kDisplayNameCodingKey];
+  [aCoder encodeObject:_photoURL forKey:kPhotoURLCodingKey];
+  [aCoder encodeObject:_email forKey:kEmailCodingKey];
+  [aCoder encodeObject:_phoneNumber forKey:kPhoneNumberCodingKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata.m
new file mode 100644
index 0000000..ba46ebd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata.m	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/User/FIRUserMetadata_Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRUserMetadata
+
+/** @var kCreationDateCodingKey
+    @brief The key used to encode the creationDate property for NSSecureCoding.
+ */
+static NSString *const kCreationDateCodingKey = @"creationDate";
+
+/** @var kLastSignInDateCodingKey
+    @brief The key used to encode the lastSignInDate property for NSSecureCoding.
+ */
+static NSString *const kLastSignInDateCodingKey = @"lastSignInDate";
+
+- (instancetype)initWithCreationDate:(nullable NSDate *)creationDate
+                      lastSignInDate:(nullable NSDate *)lastSignInDate {
+  self = [super init];
+  if (self) {
+    _creationDate = [creationDate copy];
+    _lastSignInDate = [lastSignInDate copy];
+  }
+  return self;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder {
+  NSDate *creationDate = [aDecoder decodeObjectOfClass:[NSDate class]
+                                                forKey:kCreationDateCodingKey];
+  NSDate *lastSignInDate = [aDecoder decodeObjectOfClass:[NSDate class]
+                                                  forKey:kLastSignInDateCodingKey];
+  return [self initWithCreationDate:creationDate lastSignInDate:lastSignInDate];
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_creationDate forKey:kCreationDateCodingKey];
+  [aCoder encodeObject:_lastSignInDate forKey:kLastSignInDateCodingKey];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata_Internal.h
new file mode 100644
index 0000000..20a19de
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUserMetadata_Internal.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRUserMetadata.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @extension FIRUserMetadata
+    @brief An internal class used to expose internal methods of FIRUserMetadata.
+ */
+@interface FIRUserMetadata () <NSSecureCoding>
+
+/** @fn initWithCreationDate:lastSignInDate:
+    @brief Designated initializer.
+    @param creationDate The creation date of the corresponding user.
+    @param lastSignInDate The date of the last recorded sign-in of the corresponding user.
+ */
+- (instancetype)initWithCreationDate:(nullable NSDate *)creationDate
+                      lastSignInDate:(nullable NSDate *)lastSignInDate NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser_Internal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser_Internal.h
new file mode 100644
index 0000000..54524f2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/User/FIRUser_Internal.h	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRUser.h"
+
+@class FIRAuth;
+@class FIRAuthRequestConfiguration;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRRetrieveUserCallback
+    @brief The type of block that is invoked when the construction of a user succeeds or fails.
+    @param user The user that was constructed, or nil if user construction failed.
+    @param error The error which occurred, or nil if the request was successful.
+ */
+typedef void (^FIRRetrieveUserCallback)(FIRUser *_Nullable user, NSError *_Nullable error);
+
+/** @typedef FIRVerifyBeforeUpdateEmailCallback
+    @brief The type of block called when a request to verify before update email has finished.
+    @param error Optionally; the error which occurred - or nil if the request was successful.
+ */
+typedef void (^FIRVerifyBeforeUpdateEmailCallback)(NSError *_Nullable error);
+
+@interface FIRUser () <NSSecureCoding>
+
+/** @property rawAccessToken
+    @brief The cached access token.
+    @remarks This method is specifically for providing the access token to internal clients during
+        deserialization and sign-in events, and should not be used to retrieve the access token by
+        anyone else.
+ */
+@property(nonatomic, copy, readonly) NSString *rawAccessToken;
+
+/** @property auth
+    @brief A weak reference to a FIRAuth instance associated with this instance.
+ */
+@property(nonatomic, weak) FIRAuth *auth;
+
+/** @property auth
+    @brief A strong reference to a requestConfiguration instance associated with this user instance.
+ */
+@property(nonatomic, strong) FIRAuthRequestConfiguration *requestConfiguration;
+
+/** @var accessTokenExpirationDate
+    @brief The expiration date of the cached access token.
+ */
+@property(nonatomic, copy, readonly) NSDate *accessTokenExpirationDate;
+
+/** @fn retrieveUserWithAuth:accessToken:accessTokenExpirationDate:refreshToken:callback:
+    @brief Constructs a user with Secure Token Service tokens, and obtains user details from the
+        getAccountInfo endpoint.
+    @param auth The associated FIRAuth instance.
+    @param accessToken The Secure Token Service access token.
+    @param accessTokenExpirationDate The approximate expiration date of the access token.
+    @param refreshToken The Secure Token Service refresh token.
+    @param anonymous Whether or not the user is anonymous.
+    @param callback A block which is invoked when the construction succeeds or fails. Invoked
+        asynchronously on the auth global work queue in the future.
+ */
++ (void)retrieveUserWithAuth:(FIRAuth *)auth
+                  accessToken:(nullable NSString *)accessToken
+    accessTokenExpirationDate:(nullable NSDate *)accessTokenExpirationDate
+                 refreshToken:(nullable NSString *)refreshToken
+                    anonymous:(BOOL)anonymous
+                     callback:(FIRRetrieveUserCallback)callback;
+
+/** @fn internalGetTokenForcingRefresh:callback:
+    @brief Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+    @param forceRefresh Forces a token refresh. Useful if the token becomes invalid for some reason
+        other than an expiration.
+    @param callback The block to invoke when the token is available. Invoked asynchronously on the
+        global work thread in the future.
+ */
+- (void)internalGetTokenForcingRefresh:(BOOL)forceRefresh
+                              callback:(nonnull FIRAuthTokenCallback)callback;
+
+/** @fn internalVerifyBeforeUpdateEmailWithNewEmail:actionCodeSettings:callback:
+    @brief Sends a verification email to newEmail. Upon redemption of the link in the email,
+        this user's email will be changed to newEmail and that email will be marked verified.
+    @param newEmail the user's new email.
+    @param actionCodeSettings the optional FIRActionCodeSettings object to allow linking back
+        to your app in the email.
+    @param completion The block to invoke when the call succeeds or fails. Invoked asynchronously on
+        the global work thread in the future.
+
+ */
+- (void)internalVerifyBeforeUpdateEmailWithNewEmail:(NSString *)newEmail
+                                 actionCodeSettings:
+                                     (nullable FIRActionCodeSettings *)actionCodeSettings
+                                         completion:(FIRVerifyBeforeUpdateEmailCallback)completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.h
new file mode 100644
index 0000000..4946d16
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.h	
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthUIDelegate.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthDefaultUIDelegate
+    @brief Class responsible for providing a default FIRAuthUIDelegte.
+    @remarks This class should be used in the case that a UIDelegate was expected and necessary to
+        continue a given flow, but none was provided.
+ */
+@interface FIRAuthDefaultUIDelegate : NSObject <FIRAuthUIDelegate>
+
+/** @fn defaultUIDelegate
+    @brief Unavailable. Please use @c +defaultUIDelegate:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** @fn defaultUIDelegate
+    @brief Returns a default FIRAuthUIDelegate object.
+    @return The default FIRAuthUIDelegate object.
+ */
++ (id<FIRAuthUIDelegate>)defaultUIDelegate;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.m
new file mode 100644
index 0000000..7b421a2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.m	
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if !TARGET_OS_OSX && !TARGET_OS_WATCH
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+#import <UIKit/UIKit.h>
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthDefaultUIDelegate ()
+
+/** @fn initWithViewController:
+    @brief Initializes the instance with a view controller.
+    @param viewController The view controller as the presenting view controller in @c
+        FIRAuthUIDelegate.
+    @return The initialized instance.
+ */
+- (instancetype)initWithViewController:(nullable UIViewController *)viewController
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+@implementation FIRAuthDefaultUIDelegate {
+  /** @var _viewController
+      @brief The presenting view controller.
+   */
+  UIViewController *_viewController;
+}
+
+- (instancetype)initWithViewController:(nullable UIViewController *)viewController {
+  self = [super init];
+  if (self) {
+    _viewController = viewController;
+  }
+  return self;
+}
+
+- (void)presentViewController:(UIViewController *)viewControllerToPresent
+                     animated:(BOOL)flag
+                   completion:(nullable void (^)(void))completion {
+  [_viewController presentViewController:viewControllerToPresent
+                                animated:flag
+                              completion:completion];
+}
+
+- (void)dismissViewControllerAnimated:(BOOL)flag completion:(nullable void (^)(void))completion {
+  [_viewController dismissViewControllerAnimated:flag completion:completion];
+}
+
++ (id<FIRAuthUIDelegate>)defaultUIDelegate {
+  // iOS App extensions should not call [UIApplication sharedApplication], even if UIApplication
+  // responds to it.
+  static Class applicationClass = nil;
+  if (![GULAppEnvironmentUtil isAppExtension]) {
+    Class cls = NSClassFromString(@"UIApplication");
+    if (cls && [cls respondsToSelector:NSSelectorFromString(@"sharedApplication")]) {
+      applicationClass = cls;
+    }
+  }
+
+  UIViewController *topViewController;
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+  if (@available(iOS 13.0, tvOS 13.0, *)) {
+    UIApplication *application = [applicationClass sharedApplication];
+    NSSet<UIScene *> *connectedScenes = application.connectedScenes;
+    for (UIScene *scene in connectedScenes) {
+      if ([scene isKindOfClass:[UIWindowScene class]]) {
+        UIWindowScene *windowScene = (UIWindowScene *)scene;
+        for (UIWindow *window in windowScene.windows) {
+          if (window.isKeyWindow) {
+            topViewController = window.rootViewController;
+          }
+        }
+      }
+    }
+  } else {
+    UIApplication *application = [applicationClass sharedApplication];
+// iOS 13 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    topViewController = application.keyWindow.rootViewController;
+#pragma clang diagnostic pop
+  }
+#else
+  UIApplication *application = [applicationClass sharedApplication];
+  topViewController = application.keyWindow.rootViewController;
+#endif
+
+  while (true) {
+    if (topViewController.presentedViewController) {
+      topViewController = topViewController.presentedViewController;
+    } else if ([topViewController isKindOfClass:[UINavigationController class]]) {
+      UINavigationController *nav = (UINavigationController *)topViewController;
+      topViewController = nav.topViewController;
+    } else if ([topViewController isKindOfClass:[UITabBarController class]]) {
+      UITabBarController *tab = (UITabBarController *)topViewController;
+      topViewController = tab.selectedViewController;
+    } else {
+      break;
+    }
+  }
+  return [[FIRAuthDefaultUIDelegate alloc] initWithViewController:topViewController];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h
new file mode 100644
index 0000000..93ff32c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h	
@@ -0,0 +1,598 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRMultiFactorInfo.h"
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthInternalErrors.h"
+
+@class FIRAuthCredential;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthErrorUtils
+    @brief Utility class used to construct @c NSError instances.
+ */
+@interface FIRAuthErrorUtils : NSObject
+
++ (NSError *)errorWithCode:(FIRAuthInternalErrorCode)code message:(nullable NSString *)message;
+
+/** @fn RPCRequestEncodingErrorWithUnderlyingError
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeRPCRequestEncodingError
+        code and a populated @c NSUnderlyingErrorKey in the @c NSError.userInfo dictionary.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key.
+    @remarks This error is used when an @c FIRAuthRPCRequest.unencodedHTTPRequestBodyWithError:
+        invocation returns an error. The error returned is wrapped in this internal error code.
+ */
++ (NSError *)RPCRequestEncodingErrorWithUnderlyingError:(NSError *)underlyingError;
+
+/** @fn JSONSerializationErrorForUnencodableType
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeJSONSerializationError code.
+    @remarks This error is used when an @c NSJSONSerialization.isValidJSONObject: check fails, not
+        for when an error is returned from @c NSJSONSerialization.dataWithJSONObject:options:error:.
+ */
++ (NSError *)JSONSerializationErrorForUnencodableType;
+
+/** @fn JSONSerializationErrorWithUnderlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeJSONSerializationError code, and the
+        @c underlyingError as the @c NSUnderlyingErrorKey value in the @c NSError.userInfo
+        dictionary.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key.
+    @remarks This error is used when an invocation of
+        @c NSJSONSerialization.dataWithJSONObject:options:error: returns an error.
+ */
++ (NSError *)JSONSerializationErrorWithUnderlyingError:(NSError *)underlyingError;
+
+/** @fn networkErrorWithUnderlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeNetworkError code, and the
+        @c underlyingError as the @c NSUnderlyingErrorKey value in the @c NSError.userInfo
+        dictionary.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key. Should be the error from
+        GTM.
+    @remarks This error is used when a network request results in an error, and no body data was
+        returned.
+ */
++ (NSError *)networkErrorWithUnderlyingError:(NSError *)underlyingError;
+
+/** @fn unexpectedErrorResponseWithUnderlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeNetworkError code, and the
+        @c underlyingError as the @c NSUnderlyingErrorKey value.
+    @param data The value of the @c FIRAuthErrorUserInfoDataKey key in the @c NSError.userInfo
+        dictionary.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key in the @c NSError.userInfo
+        dictionary.
+    @remarks This error is used when a network request results in an error, and unserializable body
+        data was returned.
+ */
++ (NSError *)unexpectedErrorResponseWithData:(NSData *)data
+                             underlyingError:(NSError *)underlyingError;
+
+/** @fn unexpectedErrorResponseWithDeserializedResponse:
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeUnexpectedErrorResponse
+        code, and a populated @c FIRAuthErrorUserInfoDeserializedResponseKey key in the
+        @c NSError.userInfo dictionary.
+    @param deserializedResponse The value of the @c FIRAuthErrorUserInfoDeserializedResponseKey key.
+    @remarks This error is used when a network request results in an error, and the body data was
+        deserializable as JSON, but couldn't be decoded as an error.
+ */
++ (NSError *)unexpectedErrorResponseWithDeserializedResponse:(id)deserializedResponse;
+
+/** @fn malformedJWTErrorWithToken:underlyingError:
+    @brief Constructs an @c NSError with the code set to @c FIRAuthErrorCodeMalformedJWT and
+        populates the userInfo dictionary with an error message, the bad token, and an underlying
+        error that may have occurred when parsing.
+    @param token The token that failed to parse.
+    @param underlyingError The error that caused this error. If this parameter is nil, the
+        NSUnderlyingErrorKey value will not be set.
+    @remarks This error is returned when JWT parsing fails.
+    @returns An @c FIRAuthErrorCodeMalformedJWT error wrapping an underlying error, if available.
+ */
++ (NSError *)malformedJWTErrorWithToken:(NSString *)token
+                        underlyingError:(NSError *_Nullable)underlyingError;
+
+/** @fn unexpectedResponseWithData:underlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeUnexpectedResponse
+        code, and a populated @c FIRAuthErrorUserInfoDataKey key in the @c NSError.userInfo
+        dictionary.
+    @param data The value of the @c FIRAuthErrorUserInfoDataKey key in the @c NSError.userInfo
+        dictionary.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key in the @c NSError.userInfo
+        dictionary.
+    @remarks This error is used when a network request is apparently successful, but the body data
+        couldn't be deserialized as JSON.
+ */
++ (NSError *)unexpectedResponseWithData:(NSData *)data underlyingError:(NSError *)underlyingError;
+;
+
+/** @fn unexpectedResponseWithDeserializedResponse:
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeUnexpectedResponse
+        code, and a populated @c FIRAuthErrorUserInfoDeserializedResponseKey key in the
+        @c NSError.userInfo dictionary.
+    @param deserializedResponse The value of the @c FIRAuthErrorUserInfoDeserializedResponseKey key.
+    @remarks This error is used when a network request is apparently successful, the body data was
+        successfully deserialized as JSON, but the JSON wasn't a dictionary.
+ */
++ (NSError *)unexpectedResponseWithDeserializedResponse:(id)deserializedResponse;
+
+/** @fn unexpectedResponseWithDeserializedResponse:underlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeUnexpectedResponse
+        code, and populated @c FIRAuthErrorUserInfoDeserializedResponseKey and
+        @c NSUnderlyingErrorKey keys in the @c NSError.userInfo dictionary.
+    @param deserializedResponse The value of the @c FIRAuthErrorUserInfoDeserializedResponseKey key.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key.
+    @remarks This error is used when a network request was apparently successful, the body data was
+        successfully deserialized as JSON, but the data type of the response was unexpected.
+ */
++ (NSError *)unexpectedResponseWithDeserializedResponse:(nullable id)deserializedResponse
+                                        underlyingError:(NSError *)underlyingError;
+
+/** @fn RPCResponseDecodingErrorWithDeserializedResponse:underlyingError:
+    @brief Constructs an @c NSError with the @c FIRAuthInternalErrorCodeRPCResponseDecodingError
+        code, and populated @c FIRAuthErrorUserInfoDeserializedResponseKey and
+        @c NSUnderlyingErrorKey keys in the @c NSError.userInfo dictionary.
+    @param deserializedResponse The value of the @c FIRAuthErrorUserInfoDeserializedResponseKey key.
+    @param underlyingError The value of the @c NSUnderlyingErrorKey key.
+    @remarks This error is used when an invocation of @c FIRAuthRPCResponse.setWithDictionary:error:
+        resulted in an error.
+ */
++ (NSError *)RPCResponseDecodingErrorWithDeserializedResponse:(id)deserializedResponse
+                                              underlyingError:(NSError *)underlyingError;
+
+/** @fn emailAlreadyInUseErrorWithEmail:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeEmailExists code.
+    @param email The email address that is already in use.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)emailAlreadyInUseErrorWithEmail:(nullable NSString *)email;
+
+/** @fn userDisabledErrorWithMessageWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeUserDisabled code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)userDisabledErrorWithMessage:(nullable NSString *)message;
+
+/** @fn wrongPasswordErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeWrongPassword code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)wrongPasswordErrorWithMessage:(nullable NSString *)message;
+
+/** @fn tooManyRequestsErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeTooManyRequests Code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)tooManyRequestsErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidCustomTokenErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidCustomToken code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidCustomTokenErrorWithMessage:(nullable NSString *)message;
+
+/** @fn customTokenMistmatchErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeCustomTokenMismatch code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)customTokenMistmatchErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidCredentialErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidCredential code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidCredentialErrorWithMessage:(nullable NSString *)message;
+
+/** @fn requiresRecentLoginError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeRequiresRecentLogin code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)requiresRecentLoginErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidUserTokenErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidUserToken code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidUserTokenErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidEmailErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidEmail code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidEmailErrorWithMessage:(nullable NSString *)message;
+
+/** @fn accountExistsWithDifferentCredentialErrorWithEmail:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorAccountExistsWithDifferentCredential
+        code.
+    @param email The email address that is already associated with an existing account
+    @param updatedCredential The updated credential for the existing account
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)accountExistsWithDifferentCredentialErrorWithEmail:(nullable NSString *)email
+                                              updatedCredential:
+                                                  (nullable FIRAuthCredential *)updatedCredential;
+
+/** @fn providerAlreadyLinkedErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeProviderAlreadyLinked code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)providerAlreadyLinkedError;
+
+/** @fn noSuchProviderError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeNoSuchProvider code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)noSuchProviderError;
+
+/** @fn userTokenExpiredErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeUserTokenExpired code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)userTokenExpiredErrorWithMessage:(nullable NSString *)message;
+
+/** @fn userNotFoundErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeUserNotFound code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)userNotFoundErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidLocalAPIKeyErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidAPIKey code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidAPIKeyError;
+
+/** @fn userMismatchError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeUserMismatch code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)userMismatchError;
+
+/** @fn credentialAlreadyInUseErrorWithMessage:email:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeCredentialAlreadyInUse code.
+    @param message Error message from the backend, if any.
+    @param credential Auth credential to be added to the Error User Info dictionary.
+    @param email Email to be added to the Error User Info dictionary.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)credentialAlreadyInUseErrorWithMessage:(nullable NSString *)message
+                                         credential:(nullable FIRAuthCredential *)credential
+                                              email:(nullable NSString *)email;
+/** @fn operationNotAllowedErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeOperationNotAllowed code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)operationNotAllowedErrorWithMessage:(nullable NSString *)message;
+
+/** @fn weakPasswordErrorWithServerResponseReason:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeWeakPassword code.
+    @param serverResponseReason A more detailed explanation string from server response.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)weakPasswordErrorWithServerResponseReason:(nullable NSString *)serverResponseReason;
+
+/** @fn appNotAuthorizedError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeAppNotAuthorized code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)appNotAuthorizedError;
+
+/** @fn expiredActionCodeErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeExpiredActionCode code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)expiredActionCodeErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidActionCodeErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidActionCode code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidActionCodeErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidMessagePayloadError:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidMessagePayload code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidMessagePayloadErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidSenderErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidSender code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidSenderErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidRecipientEmailError:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidRecipientEmail code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidRecipientEmailErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingIosBundleIDErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingIosBundleID code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingIosBundleIDErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingAndroidPackageNameErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingAndroidPackageName code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingAndroidPackageNameErrorWithMessage:(nullable NSString *)message;
+
+/** @fn unauthorizedDomainErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeUnauthorizedDomain code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)unauthorizedDomainErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidContinueURIErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidContinueURI code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidContinueURIErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingContinueURIErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingContinueURI code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingContinueURIErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingEmailErrorWithMessage
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingEmail code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingEmailErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingPhoneNumberErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingPhoneNumber code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingPhoneNumberErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidPhoneNumberErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidPhoneNumber code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidPhoneNumberErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingVerificationCodeErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingVerificationCode code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingVerificationCodeErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidVerificationCodeErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidVerificationCode code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidVerificationCodeErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingVerificationIDErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingVerificationID code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingVerificationIDErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidVerificationIDErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidVerificationID code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidVerificationIDErrorWithMessage:(nullable NSString *)message;
+
+/** @fn sessionExpiredErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeSessionExpired code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)sessionExpiredErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingAppCredentialWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorMissingCredential code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingAppCredentialWithMessage:(nullable NSString *)message;
+
+/** @fn invalidAppCredentialWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorInvalidCredential code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)invalidAppCredentialWithMessage:(nullable NSString *)message;
+
+/** @fn quotaExceededErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeQuotaExceeded code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)quotaExceededErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingAppTokenErrorWithUnderlyingError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingAppToken code.
+    @param underlyingError The underlying error, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingAppTokenErrorWithUnderlyingError:(nullable NSError *)underlyingError;
+
+/** @fn localPlayerNotAuthenticatedError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeLocalPlayerNotAuthenticated code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)localPlayerNotAuthenticatedError;
+
+/** @fn gameKitNotLinkedError
+   @brief Constructs an @c NSError with the @c FIRAuthErrorCodeGameKitNotLinked code.
+   @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)gameKitNotLinkedError;
+
+/** @fn notificationNotForwardedError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeNotificationNotForwarded code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)notificationNotForwardedError;
+
+#if TARGET_OS_IOS
+/** @fn secondFactorRequiredError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeSecondFactorRequired code.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)secondFactorRequiredErrorWithPendingCredential:(NSString *)MFAPendingCredential
+                                                      hints:(NSArray<FIRMultiFactorInfo *> *)
+                                                                multiFactorInfo;
+#endif
+
+/** @fn appNotVerifiedErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeAppNotVerified code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)appNotVerifiedErrorWithMessage:(nullable NSString *)message;
+
+/** @fn missingClientIdentifierErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeMissingClientIdentifier code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)missingClientIdentifierErrorWithMessage:(nullable NSString *)message;
+
+/** @fn captchaCheckFailedErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCaptchaCheckFailed code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)captchaCheckFailedErrorWithMessage:(nullable NSString *)message;
+
+/** @fn webContextAlreadyPresentedErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeWebContextAlreadyPresented code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)webContextAlreadyPresentedErrorWithMessage:(nullable NSString *)message;
+
+/** @fn webContextCancelledErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeWebContextCancelled code.
+    @param message Error message from the backend, if any.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)webContextCancelledErrorWithMessage:(nullable NSString *)message;
+
+/** @fn appVerificationUserInteractionFailureWithReason:
+    @brief Constructs an @c NSError with the @c
+        FIRAuthErrorCodeAppVerificationUserInteractionFailure code.
+    @param reason Reason for error, returned via URL response.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)appVerificationUserInteractionFailureWithReason:(NSString *)reason;
+
+/** @fn webSignInUserInteractionFailureWithReason:
+    @brief Constructs an @c NSError with the @c
+        FIRAuthErrorCodeWebSignInUserInteractionFailure code.
+    @param reason Reason for error, returned via URL response.
+    @return The NSError instance associated with the given FIRAuthError.
+ */
++ (NSError *)webSignInUserInteractionFailureWithReason:(nullable NSString *)reason;
+
+/** @fn URLResponseErrorWithCode:message:
+    @brief Constructs an @c NSError with the code and message provided.
+    @param message Error message from the backend, if any.
+    @return The nullable NSError instance associated with the given error message, if one is found.
+ */
++ (nullable NSError *)URLResponseErrorWithCode:(NSString *)code
+                                       message:(nullable NSString *)message;
+
+/** @fn nullUserErrorWithMessage:
+    @brief Constructs an @c NSError with the code and message provided.
+    @param message Error message from the backend, if any.
+    @return The nullable NSError instance associated with the given error message, if one is found.
+ */
++ (NSError *)nullUserErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidProviderIDErrorWithMessage:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeInvalidProviderID code.
+    @param message Error message from the backend, if any.
+    @remarks This error indicates that the provider id given for the web operation is invalid.
+ */
++ (NSError *)invalidProviderIDErrorWithMessage:(nullable NSString *)message;
+
+/** @fn invalidDynamicLinkDomainErrorWithMessage:
+    @brief Constructs an @c NSError with the code and message provided.
+    @param message Error message from the backend, if any.
+    @return The nullable NSError instance associated with the given error message, if one is found.
+ */
++ (NSError *)invalidDynamicLinkDomainErrorWithMessage:(nullable NSString *)message;
+
+/** @fn keychainErrorWithFunction:status:
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeKeychainError code.
+    @param keychainFunction The keychain function which was invoked and yielded an unexpected
+        response. The @c NSLocalizedFailureReasonErrorKey field in the @c NSError.userInfo
+        dictionary will contain a string partially comprised of this value.
+    @param status The response status from the invoked keychain function. The
+        @c NSLocalizedFailureReasonErrorKey field in the @c NSError.userInfo dictionary will contain
+        a string partially comprised of this value.
+ */
++ (NSError *)keychainErrorWithFunction:(NSString *)keychainFunction status:(OSStatus)status;
+
+/** @fn missingOrInvalidNonceErrorWithMessage:
+    @brief Constructs an @c NSError with the code and message provided.
+    @param message Error message from the backend, if any.
+    @return The nullable NSError instance associated with the given error message, if one is found.
+*/
++ (NSError *)missingOrInvalidNonceErrorWithMessage:(nullable NSString *)message;
+
+/** @fn tenantIDMismatchError
+    @brief Constructs an @c NSError with the @c FIRAuthErrorCodeTenantIDMismatch code.
+    @remarks This error is used when an attempt is made to update the current user with a
+        tenantId that differs from the current FirebaseAuth instance's tenantId.
+ */
++ (NSError *)tenantIDMismatchError;
+
+/** @fn unsupportedTenantOperationError
+    @brief Constructs an @c NSError with the @c FIRUnsupportedTenantOperation code.
+    @remarks This error indicates the operation is not supported in a multi-tenant context.
+ */
++ (NSError *)unsupportedTenantOperationError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.m
new file mode 100644
index 0000000..993f7f1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.m	
@@ -0,0 +1,1397 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthCredential.h"
+
+#import "FirebaseAuth/Sources/MultiFactor/FIRMultiFactorResolver+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+NSString *const FIRAuthErrorDomain = @"FIRAuthErrorDomain";
+
+NSString *const FIRAuthInternalErrorDomain = @"FIRAuthInternalErrorDomain";
+
+NSString *const FIRAuthErrorUserInfoDeserializedResponseKey =
+    @"FIRAuthErrorUserInfoDeserializedResponseKey";
+
+NSString *const FIRAuthErrorUserInfoDataKey = @"FIRAuthErrorUserInfoDataKey";
+
+NSString *const FIRAuthErrorUserInfoEmailKey = @"FIRAuthErrorUserInfoEmailKey";
+
+NSString *const FIRAuthErrorUserInfoUpdatedCredentialKey =
+    @"FIRAuthErrorUserInfoUpdatedCredentialKey";
+
+NSString *const FIRAuthErrorUserInfoNameKey = @"FIRAuthErrorUserInfoNameKey";
+
+NSString *const FIRAuthErrorUserInfoMultiFactorResolverKey =
+    @"FIRAuthErrorUserInfoMultiFactorResolverKey";
+
+/** @var kServerErrorDetailMarker
+    @brief This marker indicates that the server error message contains a detail error message which
+        should be used instead of the hardcoded client error message.
+ */
+static NSString *const kServerErrorDetailMarker = @" : ";
+
+#pragma mark - URL response error codes
+
+/** @var kURLResponseErrorCodeInvalidClientID
+    @brief Error code that indicates that the client ID provided was invalid.
+ */
+static NSString *const kURLResponseErrorCodeInvalidClientID = @"auth/invalid-oauth-client-id";
+
+/** @var kURLResponseErrorCodeNetworkRequestFailed
+    @brief Error code that indicates that a network request within the SFSafariViewController or
+        WKWebView failed.
+ */
+static NSString *const kURLResponseErrorCodeNetworkRequestFailed = @"auth/network-request-failed";
+
+/** @var kURLResponseErrorCodeInternalError
+    @brief Error code that indicates that an internal error occurred within the
+        SFSafariViewController or WKWebView failed.
+ */
+static NSString *const kURLResponseErrorCodeInternalError = @"auth/internal-error";
+
+#pragma mark - Standard Error Messages
+
+/** @var kFIRAuthErrorMessageInvalidCustomToken
+    @brief Message for @c FIRAuthErrorCodeInvalidCustomToken error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidCustomToken =
+    @"The custom token format is "
+     "incorrect. Please check the documentation.";
+
+/** @var kFIRAuthErrorMessageCustomTokenMismatch
+    @brief Message for @c FIRAuthErrorCodeCustomTokenMismatch error code.
+ */
+static NSString *const kFIRAuthErrorMessageCustomTokenMismatch = @"The custom token corresponds to "
+                                                                  "a different audience.";
+
+/** @var kFIRAuthErrorMessageInvalidEmail
+    @brief Message for @c FIRAuthErrorCodeInvalidEmail error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidEmail = @"The email address is badly formatted.";
+
+/** @var kFIRAuthErrorMessageInvalidCredential
+    @brief Message for @c FIRAuthErrorCodeInvalidCredential error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidCredential = @"The supplied auth credential is "
+                                                                "malformed or has expired.";
+
+/** @var kFIRAuthErrorMessageUserDisabled
+    @brief Message for @c FIRAuthErrorCodeUserDisabled error code.
+ */
+static NSString *const kFIRAuthErrorMessageUserDisabled = @"The user account has been disabled by "
+                                                           "an administrator.";
+
+/** @var kFIRAuthErrorMessageEmailAlreadyInUse
+    @brief Message for @c FIRAuthErrorCodeEmailAlreadyInUse error code.
+ */
+static NSString *const kFIRAuthErrorMessageEmailAlreadyInUse = @"The email address is already in "
+                                                                "use by another account.";
+
+/** @var kFIRAuthErrorMessageWrongPassword
+    @brief Message for @c FIRAuthErrorCodeWrongPassword error code.
+ */
+static NSString *const kFIRAuthErrorMessageWrongPassword = @"The password is invalid or the user "
+                                                            "does not have a password.";
+
+/** @var kFIRAuthErrorMessageTooManyRequests
+    @brief Message for @c FIRAuthErrorCodeTooManyRequests error code.
+ */
+static NSString *const kFIRAuthErrorMessageTooManyRequests =
+    @"We have blocked all requests from "
+     "this device due to unusual activity. Try again later.";
+
+/** @var kFIRAuthErrorMessageAccountExistsWithDifferentCredential
+    @brief Message for @c FIRAuthErrorCodeAccountExistsWithDifferentCredential error code.
+ */
+static NSString *const kFIRAuthErrorMessageAccountExistsWithDifferentCredential =
+    @"An account "
+     "already exists with the same email address but different sign-in credentials. Sign in using "
+     "a "
+     "provider associated with this email address.";
+
+/** @var kFIRAuthErrorMessageRequiresRecentLogin
+    @brief Message for @c FIRAuthErrorCodeRequiresRecentLogin error code.
+ */
+static NSString *const kFIRAuthErrorMessageRequiresRecentLogin =
+    @"This operation is sensitive and "
+     "requires recent authentication. Log in again before retrying this request.";
+
+/** @var kFIRAuthErrorMessageProviderAlreadyLinked
+    @brief Message for @c FIRAuthErrorCodeProviderAlreadyExists error code.
+ */
+static NSString *const kFIRAuthErrorMessageProviderAlreadyLinked =
+    @"[ERROR_PROVIDER_ALREADY_LINKED] - User can only be linked to one identity for the given "
+     "provider.";
+
+/** @var kFIRAuthErrorMessageNoSuchProvider
+    @brief Message for @c FIRAuthErrorCodeNoSuchProvider error code.
+ */
+static NSString *const kFIRAuthErrorMessageNoSuchProvider = @"User was not linked to an account "
+                                                             "with the given provider.";
+
+/** @var kFIRAuthErrorMessageInvalidUserToken
+    @brief Message for @c FIRAuthErrorCodeInvalidUserToken error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidUserToken =
+    @"This user's credential isn't valid "
+     "for this project. This can happen if the user's token has been tampered with, or if the user "
+     "doesn’t belong to the project associated with the API key used in your request.";
+
+/** @var kFIRAuthErrorMessageNetworkError
+    @brief Message for @c FIRAuthErrorCodeNetworkError error code.
+ */
+static NSString *const kFIRAuthErrorMessageNetworkError =
+    @"Network error (such as timeout, "
+     "interrupted connection or unreachable host) has occurred.";
+
+/** @var kFIRAuthErrorMessageKeychainError
+    @brief Message for @c FIRAuthErrorCodeKeychainError error code.
+ */
+static NSString *const kFIRAuthErrorMessageKeychainError =
+    @"An error occurred when accessing the "
+     "keychain. The NSLocalizedFailureReasonErrorKey field in the NSError.userInfo dictionary "
+     "will contain more information about the error encountered";
+
+/** @var kFIRAuthErrorMessageMissingClientIdentifier
+    @brief Message for @c FIRAuthErrorCodeMissingClientIdentifier error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingClientIdentifier =
+    @"The request does not contain "
+     "any client identifier.";
+
+/** @var kFIRAuthErrorMessageUserTokenExpired
+    @brief Message for @c FIRAuthErrorCodeTokenExpired error code.
+ */
+static NSString *const kFIRAuthErrorMessageUserTokenExpired =
+    @"The user's credential is no longer "
+     "valid. The user must sign in again.";
+
+/** @var kFIRAuthErrorMessageUserNotFound
+    @brief Message for @c FIRAuthErrorCodeUserNotFound error code.
+ */
+static NSString *const kFIRAuthErrorMessageUserNotFound =
+    @"There is no user record corresponding "
+     "to this identifier. The user may have been deleted.";
+
+/** @var kFIRAuthErrorMessageInvalidAPIKey
+    @brief Message for @c FIRAuthErrorCodeInvalidAPIKey error code.
+    @remarks This error is not thrown by the server.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidAPIKey = @"An invalid API Key was supplied in "
+                                                            "the request.";
+
+/** @var kFIRAuthErrorMessageUserMismatch.
+    @brief Message for @c FIRAuthErrorCodeInvalidAPIKey error code.
+ */
+static NSString *const FIRAuthErrorMessageUserMismatch =
+    @"The supplied credentials do not "
+     "correspond to the previously signed in user.";
+
+/** @var kFIRAuthErrorMessageCredentialAlreadyInUse
+    @brief Message for @c FIRAuthErrorCodeCredentialAlreadyInUse error code.
+ */
+static NSString *const kFIRAuthErrorMessageCredentialAlreadyInUse =
+    @"This credential is already "
+     "associated with a different user account.";
+
+/** @var kFIRAuthErrorMessageOperationNotAllowed
+    @brief Message for @c FIRAuthErrorCodeOperationNotAllowed error code.
+ */
+static NSString *const kFIRAuthErrorMessageOperationNotAllowed =
+    @"The given sign-in provider is "
+     "disabled for this Firebase project. Enable it in the Firebase console, under the sign-in "
+     "method tab of the Auth section.";
+
+/** @var kFIRAuthErrorMessageWeakPassword
+    @brief Message for @c FIRAuthErrorCodeWeakPassword error code.
+ */
+static NSString *const kFIRAuthErrorMessageWeakPassword = @"The password must be 6 characters long "
+                                                           "or more.";
+
+/** @var kFIRAuthErrorMessageAppNotAuthorized
+    @brief Message for @c FIRAuthErrorCodeAppNotAuthorized error code.
+ */
+static NSString *const kFIRAuthErrorMessageAppNotAuthorized =
+    @"This app is not authorized to use "
+     "Firebase Authentication with the provided API key. Review your key configuration in the "
+     "Google API console and ensure that it accepts requests from your app's bundle ID.";
+
+/** @var kFIRAuthErrorMessageExpiredActionCode
+    @brief Message for @c FIRAuthErrorCodeExpiredActionCode error code.
+ */
+static NSString *const kFIRAuthErrorMessageExpiredActionCode = @"The action code has expired.";
+
+/** @var kFIRAuthErrorMessageInvalidActionCode
+    @brief Message for @c FIRAuthErrorCodeInvalidActionCode error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidActionCode =
+    @"The action code is invalid. This "
+     "can happen if the code is malformed, expired, or has already been used.";
+
+/** @var kFIRAuthErrorMessageInvalidMessagePayload
+    @brief Message for @c FIRAuthErrorCodeInvalidMessagePayload error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidMessagePayload =
+    @"The action code is invalid. "
+     "This can happen if the code is malformed, expired, or has already been used.";
+
+/** @var kFIRAuthErrorMessageInvalidSender
+    @brief Message for @c FIRAuthErrorCodeInvalidSender error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidSender =
+    @"The email template corresponding to "
+     "this action contains invalid characters in its message. Please fix by going to the Auth "
+     "email "
+     "templates section in the Firebase Console.";
+
+/** @var kFIRAuthErrorMessageInvalidRecipientEmail
+    @brief Message for @c FIRAuthErrorCodeInvalidRecipient error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidRecipientEmail =
+    @"The action code is invalid. "
+     "This can happen if the code is malformed, expired, or has already been used.";
+
+/** @var kFIRAuthErrorMessageMissingIosBundleID
+    @brief Message for @c FIRAuthErrorCodeMissingIosbundleID error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingIosBundleID =
+    @"An iOS Bundle ID must be provided if an App Store ID is provided.";
+
+/** @var kFIRAuthErrorMessageMissingAndroidPackageName
+    @brief Message for @c FIRAuthErrorCodeMissingAndroidPackageName error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingAndroidPackageName =
+    @"An Android Package Name must be provided if the Android App is required to be installed.";
+
+/** @var kFIRAuthErrorMessageUnauthorizedDomain
+    @brief Message for @c FIRAuthErrorCodeUnauthorizedDomain error code.
+ */
+static NSString *const kFIRAuthErrorMessageUnauthorizedDomain =
+    @"The domain of the continue URL "
+     "is not allowlisted. Please allowlist the domain in the Firebase console.";
+
+/** @var kFIRAuthErrorMessageInvalidContinueURI
+    @brief Message for @c FIRAuthErrorCodeInvalidContinueURI error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidContinueURI =
+    @"The continue URL provided in the request is invalid.";
+
+/** @var kFIRAuthErrorMessageMissingEmail
+    @brief Message for @c FIRAuthErrorCodeMissingEmail error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingEmail = @"An email address must be provided.";
+
+/** @var kFIRAuthErrorMessageMissingContinueURI
+    @brief Message for @c FIRAuthErrorCodeMissingContinueURI error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingContinueURI =
+    @"A continue URL must be provided in the request.";
+
+/** @var kFIRAuthErrorMessageMissingPhoneNumber
+    @brief Message for @c FIRAuthErrorCodeMissingPhoneNumber error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingPhoneNumber =
+    @"To send verification codes, provide a phone number for the recipient.";
+
+/** @var kFIRAuthErrorMessageInvalidPhoneNumber
+    @brief Message for @c FIRAuthErrorCodeInvalidPhoneNumber error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidPhoneNumber =
+    @"The format of the phone number provided is incorrect. Please enter the phone number in a "
+     "format that can be parsed into E.164 format. E.164 phone numbers are written in the format "
+     "[+][country code][subscriber number including area code].";
+
+/** @var kFIRAuthErrorMessageMissingVerificationCode
+    @brief Message for @c FIRAuthErrorCodeMissingVerificationCode error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingVerificationCode =
+    @"The phone auth credential was created with an empty SMS verification Code.";
+
+/** @var kFIRAuthErrorMessageInvalidVerificationCode
+    @brief Message for @c FIRAuthErrorCodeInvalidVerificationCode error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidVerificationCode =
+    @"The SMS verification code used to create the phone auth credential is invalid. Please resend "
+     "the verification code SMS and be sure to use the verification code provided by the user.";
+
+/** @var kFIRAuthErrorMessageMissingVerificationID
+    @brief Message for @c FIRAuthErrorCodeInvalidVerificationID error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingVerificationID =
+    @"The phone auth credential was created with an empty verification ID.";
+
+/** @var kFIRAuthErrorMessageInvalidVerificationID
+    @brief Message for @c FIRAuthErrorCodeInvalidVerificationID error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidVerificationID =
+    @"The verification ID used to create the phone auth credential is invalid.";
+
+/** @var kFIRAuthErrorMessageLocalPlayerNotAuthenticated
+    @brief Message for @c FIRAuthErrorCodeLocalPlayerNotAuthenticated error code.
+ */
+static NSString *const kFIRAuthErrorMessageLocalPlayerNotAuthenticated =
+    @"The local player is not authenticated. Please log the local player in to Game Center.";
+
+/** @var kFIRAuthErrorMessageGameKitNotLinked
+    @brief Message for @c kFIRAuthErrorMessageGameKitNotLinked error code.
+ */
+static NSString *const kFIRAuthErrorMessageGameKitNotLinked =
+    @"The GameKit framework is not linked. Please turn on the Game Center capability.";
+
+/** @var kFIRAuthErrorMessageSessionExpired
+    @brief Message for @c FIRAuthErrorCodeSessionExpired error code.
+ */
+static NSString *const kFIRAuthErrorMessageSessionExpired =
+    @"The SMS code has expired. Please "
+    @"re-send the verification code to try again.";
+
+/** @var kFIRAuthErrorMessageMissingAppCredential
+    @brief Message for @c FIRAuthErrorCodeMissingAppCredential error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingAppCredential =
+    @"The phone verification request "
+     "is missing an APNs Device token. Firebase Auth automatically detects APNs Device Tokens, "
+     "however, if method swizzling is disabled, the APNs token must be set via the APNSToken "
+     "property on FIRAuth or by calling setAPNSToken:type on FIRAuth.";
+
+/** @var kFIRAuthErrorMessageInvalidAppCredential
+    @brief Message for @c FIRAuthErrorCodeInvalidAppCredential error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidAppCredential =
+    @"The APNs device token provided "
+     "is either incorrect or does not match the private certificate uploaded to the Firebase "
+     "Console.";
+
+/** @var kFIRAuthErrorMessageQuotaExceeded
+    @brief Message for @c FIRAuthErrorCodeQuotaExceeded error code.
+ */
+static NSString *const kFIRAuthErrorMessageQuotaExceeded = @"The quota for this operation "
+                                                            "has been exceeded.";
+
+/** @var kFIRAuthErrorMessageMissingAppToken
+    @brief Message for @c FIRAuthErrorCodeMissingAppToken error code.
+ */
+static NSString *const kFIRAuthErrorMessageMissingAppToken =
+    @"There seems to be a problem with "
+     "your project's Firebase phone number authentication set-up, please make sure to follow the "
+     "instructions found at https://firebase.google.com/docs/auth/ios/phone-auth";
+
+/** @var kFIRAuthErrorMessageMissingAppToken
+    @brief Message for @c FIRAuthErrorCodeMissingAppToken error code.
+ */
+static NSString *const kFIRAuthErrorMessageNotificationNotForwarded =
+    @"If app delegate swizzling "
+     "is disabled, remote notifications received by UIApplicationDelegate need to be forwarded to "
+     "FIRAuth's canHandleNotificaton: method.";
+
+/** @var kFIRAuthErrorMessageAppNotVerified
+    @brief Message for @c FIRAuthErrorCodeMissingAppToken error code.
+ */
+static NSString *const kFIRAuthErrorMessageAppNotVerified =
+    @"Firebase could not retrieve the "
+     "silent push notification and therefore could not verify your app. Ensure that you configured "
+     "your app correctly to receive push notifications.";
+
+/** @var kFIRAuthErrorMessageCaptchaCheckFailed
+    @brief Message for @c FIRAuthErrorCodeCaptchaCheckFailed error code.
+ */
+static NSString *const kFIRAuthErrorMessageCaptchaCheckFailed =
+    @"The reCAPTCHA response token "
+     "provided is either invalid, expired or already";
+
+/** @var kFIRAuthErrorMessageWebContextAlreadyPresented
+    @brief Message for @c FIRAuthErrorCodeWebContextAlreadyPresented error code.
+ */
+static NSString *const kFIRAuthErrorMessageWebContextAlreadyPresented =
+    @"User interaction is "
+     "still ongoing, another view cannot be presented.";
+
+/** @var kFIRAuthErrorMessageWebContextCancelled
+    @brief Message for @c FIRAuthErrorCodeWebContextCancelled error code.
+ */
+static NSString *const kFIRAuthErrorMessageWebContextCancelled = @"The interaction was cancelled "
+                                                                  "by the user.";
+
+/** @var kFIRAuthErrorMessageInvalidClientID
+    @brief Message for @c FIRAuthErrorCodeInvalidClientID error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidClientID =
+    @"The OAuth client ID provided is "
+     "either invalid or does not match the specified API key.";
+
+/** @var kFIRAuthErrorMessageWebRequestFailed
+    @brief Message for @c FIRAuthErrorCodeWebRequestFailed error code.
+ */
+static NSString *const kFIRAuthErrorMessageWebRequestFailed =
+    @"A network error (such as timeout, "
+     "interrupted connection, or unreachable host) has occurred within the web context.";
+
+/** @var kFIRAuthErrorMessageWebInternalError
+    @brief Message for @c FIRAuthErrorCodeWebInternalError error code.
+ */
+static NSString *const kFIRAuthErrorMessageWebInternalError =
+    @"An internal error has occurred "
+     "within the SFSafariViewController or WKWebView.";
+
+/** @var kFIRAuthErrorMessageAppVerificationUserInteractionFailure
+    @brief Message for @c FIRAuthErrorCodeInvalidClientID error code.
+ */
+static NSString *const kFIRAuthErrorMessageAppVerificationUserInteractionFailure =
+    @"The app "
+     "verification process has failed, print and inspect the error details for more information";
+
+/** @var kFIRAuthErrorMessageNullUser
+    @brief Message for @c FIRAuthErrorCodeNullUser error code.
+ */
+static NSString *const kFIRAuthErrorMessageNullUser =
+    @"A null user object was provided as the "
+     "argument for an operation which requires a non-null user object.";
+
+/** @var kFIRAuthErrorMessageInvalidProviderID
+    @brief Message for @c FIRAuthErrorCodeInvalidProviderID error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidProviderID =
+    @"The provider ID provided for the "
+     "attempted web operation is invalid.";
+
+/** @var kFIRAuthErrorMessageInvalidDynamicLinkDomain
+    @brief Message for @c kFIRAuthErrorMessageInvalidDynamicLinkDomain error code.
+ */
+static NSString *const kFIRAuthErrorMessageInvalidDynamicLinkDomain =
+    @"The "
+     "Firebase Dynamic Link domain used is either not configured or is unauthorized "
+     "for the current project.";
+
+/** @var kFIRAuthErrorMessageInternalError
+    @brief Message for @c FIRAuthErrorCodeInternalError error code.
+ */
+static NSString *const kFIRAuthErrorMessageInternalError =
+    @"An internal error has occurred, "
+     "print and inspect the error details for more information.";
+
+/** @var kFIRAuthErrorMessageMalformedJWT
+    @brief Error message constant describing @c FIRAuthErrorCodeMalformedJWT errors.
+ */
+static NSString *const kFIRAuthErrorMessageMalformedJWT =
+    @"Failed to parse JWT. Check the userInfo dictionary for the full token.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const kFIRAuthErrorMessageSecondFactorRequired =
+    @"Please complete a second factor challenge to finish signing into this account.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageMissingMultiFactorSession =
+    @"The request is missing proof of first factor successful sign-in.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageMissingMultiFactorInfo =
+    @"No second factor identifier is provided.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageInvalidMultiFactorSession =
+    @"The request does not contain a valid proof of first factor successful sign-in.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageMultiFactorInfoNotFound =
+    @"The user does not have a second factor matching the identifier provided.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageAdminRestrictedOperation =
+    @"This operation is restricted to administrators only.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageUnverifiedEmail =
+    @"The operation requires a verified email.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageSecondFactorAlreadyEnrolled =
+    @"The second factor is already enrolled on this account.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageMaximumSecondFactorCountExceeded =
+    @"The maximum allowed number of second factors on a user has been exceeded.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageUnsupportedFirstFactor =
+    @"Enrolling a second factor or signing in with a multi-factor account requires sign-in with a "
+    @"supported first factor.";
+
+/** @var kFIRAuthErrorMessageSecondFactorRequired
+    @brief Message for @c kFIRAuthErrorMessageSecondFactorRequired error code.
+ */
+static NSString *const FIRAuthErrorMessageEmailChangeNeedsVerification =
+    @"Multi-factor users must always have a verified email.";
+
+/** @var kFIRAuthErrorMessageDynamicLinkNotActivated
+    @brief Error message constant describing @c FIRAuthErrorCodeDynamicLinkNotActivated errors.
+ */
+static NSString *const kFIRAuthErrorMessageDynamicLinkNotActivated =
+    @"Please activate Dynamic Links in the Firebase Console and agree to the terms and conditions.";
+
+/** @var kFIRAuthErrorMessageRejectedCredential
+    @brief Error message constant describing @c FIRAuthErrorCodeRejectedCredential errors.
+ */
+static NSString *const kFIRAuthErrorMessageRejectedCredential =
+    @"The request contains malformed or mismatching credentials.";
+
+/** @var kFIRAuthErrorMessageMissingOrInvalidNonce
+    @brief Error message constant describing @c FIRAuthErrorCodeMissingOrInvalidNonce errors.
+ */
+static NSString *const kFIRAuthErrorMessageMissingOrInvalidNonce =
+    @"The request contains malformed or mismatched credentials.";
+
+/** @var kFIRAuthErrorMessageTenantIDMismatch.
+    @brief Message for @c FIRAuthErrorCodeTenantIDMismatch error code.
+ */
+static NSString *const kFIRAuthErrorMessageTenantIDMismatch =
+    @"The provided user's tenant ID does"
+     "not match the Auth instance's tenant ID.";
+
+/** @var kFIRAuthErrorMessageUnsupportedTenantOperation
+    @brief Message for @c FIRAuthErrorCodeUnsupportedTenantOperation error code.
+ */
+static NSString *const kFIRAuthErrorMessageUnsupportedTenantOperation =
+    @"This operation is not"
+     "supported in a multi-tenant context.";
+
+/** @var FIRAuthErrorDescription
+    @brief The error descrioption, based on the error code.
+    @remarks No default case so that we get a compiler warning if a new value was added to the enum.
+ */
+static NSString *FIRAuthErrorDescription(FIRAuthErrorCode code) {
+  switch (code) {
+    case FIRAuthErrorCodeInvalidCustomToken:
+      return kFIRAuthErrorMessageInvalidCustomToken;
+    case FIRAuthErrorCodeCustomTokenMismatch:
+      return kFIRAuthErrorMessageCustomTokenMismatch;
+    case FIRAuthErrorCodeInvalidEmail:
+      return kFIRAuthErrorMessageInvalidEmail;
+    case FIRAuthErrorCodeInvalidCredential:
+      return kFIRAuthErrorMessageInvalidCredential;
+    case FIRAuthErrorCodeUserDisabled:
+      return kFIRAuthErrorMessageUserDisabled;
+    case FIRAuthErrorCodeEmailAlreadyInUse:
+      return kFIRAuthErrorMessageEmailAlreadyInUse;
+    case FIRAuthErrorCodeWrongPassword:
+      return kFIRAuthErrorMessageWrongPassword;
+    case FIRAuthErrorCodeTooManyRequests:
+      return kFIRAuthErrorMessageTooManyRequests;
+    case FIRAuthErrorCodeAccountExistsWithDifferentCredential:
+      return kFIRAuthErrorMessageAccountExistsWithDifferentCredential;
+    case FIRAuthErrorCodeRequiresRecentLogin:
+      return kFIRAuthErrorMessageRequiresRecentLogin;
+    case FIRAuthErrorCodeProviderAlreadyLinked:
+      return kFIRAuthErrorMessageProviderAlreadyLinked;
+    case FIRAuthErrorCodeNoSuchProvider:
+      return kFIRAuthErrorMessageNoSuchProvider;
+    case FIRAuthErrorCodeInvalidUserToken:
+      return kFIRAuthErrorMessageInvalidUserToken;
+    case FIRAuthErrorCodeNetworkError:
+      return kFIRAuthErrorMessageNetworkError;
+    case FIRAuthErrorCodeKeychainError:
+      return kFIRAuthErrorMessageKeychainError;
+    case FIRAuthErrorCodeMissingClientIdentifier:
+      return kFIRAuthErrorMessageMissingClientIdentifier;
+    case FIRAuthErrorCodeUserTokenExpired:
+      return kFIRAuthErrorMessageUserTokenExpired;
+    case FIRAuthErrorCodeUserNotFound:
+      return kFIRAuthErrorMessageUserNotFound;
+    case FIRAuthErrorCodeInvalidAPIKey:
+      return kFIRAuthErrorMessageInvalidAPIKey;
+    case FIRAuthErrorCodeCredentialAlreadyInUse:
+      return kFIRAuthErrorMessageCredentialAlreadyInUse;
+    case FIRAuthErrorCodeInternalError:
+      return kFIRAuthErrorMessageInternalError;
+    case FIRAuthErrorCodeUserMismatch:
+      return FIRAuthErrorMessageUserMismatch;
+    case FIRAuthErrorCodeOperationNotAllowed:
+      return kFIRAuthErrorMessageOperationNotAllowed;
+    case FIRAuthErrorCodeWeakPassword:
+      return kFIRAuthErrorMessageWeakPassword;
+    case FIRAuthErrorCodeAppNotAuthorized:
+      return kFIRAuthErrorMessageAppNotAuthorized;
+    case FIRAuthErrorCodeExpiredActionCode:
+      return kFIRAuthErrorMessageExpiredActionCode;
+    case FIRAuthErrorCodeInvalidActionCode:
+      return kFIRAuthErrorMessageInvalidActionCode;
+    case FIRAuthErrorCodeInvalidSender:
+      return kFIRAuthErrorMessageInvalidSender;
+    case FIRAuthErrorCodeInvalidMessagePayload:
+      return kFIRAuthErrorMessageInvalidMessagePayload;
+    case FIRAuthErrorCodeInvalidRecipientEmail:
+      return kFIRAuthErrorMessageInvalidRecipientEmail;
+    case FIRAuthErrorCodeMissingIosBundleID:
+      return kFIRAuthErrorMessageMissingIosBundleID;
+    case FIRAuthErrorCodeMissingAndroidPackageName:
+      return kFIRAuthErrorMessageMissingAndroidPackageName;
+    case FIRAuthErrorCodeUnauthorizedDomain:
+      return kFIRAuthErrorMessageUnauthorizedDomain;
+    case FIRAuthErrorCodeInvalidContinueURI:
+      return kFIRAuthErrorMessageInvalidContinueURI;
+    case FIRAuthErrorCodeMissingContinueURI:
+      return kFIRAuthErrorMessageMissingContinueURI;
+    case FIRAuthErrorCodeMissingEmail:
+      return kFIRAuthErrorMessageMissingEmail;
+    case FIRAuthErrorCodeMissingPhoneNumber:
+      return kFIRAuthErrorMessageMissingPhoneNumber;
+    case FIRAuthErrorCodeInvalidPhoneNumber:
+      return kFIRAuthErrorMessageInvalidPhoneNumber;
+    case FIRAuthErrorCodeMissingVerificationCode:
+      return kFIRAuthErrorMessageMissingVerificationCode;
+    case FIRAuthErrorCodeInvalidVerificationCode:
+      return kFIRAuthErrorMessageInvalidVerificationCode;
+    case FIRAuthErrorCodeMissingVerificationID:
+      return kFIRAuthErrorMessageMissingVerificationID;
+    case FIRAuthErrorCodeInvalidVerificationID:
+      return kFIRAuthErrorMessageInvalidVerificationID;
+    case FIRAuthErrorCodeSessionExpired:
+      return kFIRAuthErrorMessageSessionExpired;
+    case FIRAuthErrorCodeMissingAppCredential:
+      return kFIRAuthErrorMessageMissingAppCredential;
+    case FIRAuthErrorCodeInvalidAppCredential:
+      return kFIRAuthErrorMessageInvalidAppCredential;
+    case FIRAuthErrorCodeQuotaExceeded:
+      return kFIRAuthErrorMessageQuotaExceeded;
+    case FIRAuthErrorCodeMissingAppToken:
+      return kFIRAuthErrorMessageMissingAppToken;
+    case FIRAuthErrorCodeNotificationNotForwarded:
+      return kFIRAuthErrorMessageNotificationNotForwarded;
+    case FIRAuthErrorCodeAppNotVerified:
+      return kFIRAuthErrorMessageAppNotVerified;
+    case FIRAuthErrorCodeCaptchaCheckFailed:
+      return kFIRAuthErrorMessageCaptchaCheckFailed;
+    case FIRAuthErrorCodeWebContextAlreadyPresented:
+      return kFIRAuthErrorMessageWebContextAlreadyPresented;
+    case FIRAuthErrorCodeWebContextCancelled:
+      return kFIRAuthErrorMessageWebContextCancelled;
+    case FIRAuthErrorCodeInvalidClientID:
+      return kFIRAuthErrorMessageInvalidClientID;
+    case FIRAuthErrorCodeAppVerificationUserInteractionFailure:
+      return kFIRAuthErrorMessageAppVerificationUserInteractionFailure;
+    case FIRAuthErrorCodeWebNetworkRequestFailed:
+      return kFIRAuthErrorMessageWebRequestFailed;
+    case FIRAuthErrorCodeNullUser:
+      return kFIRAuthErrorMessageNullUser;
+    case FIRAuthErrorCodeInvalidProviderID:
+      return kFIRAuthErrorMessageInvalidProviderID;
+    case FIRAuthErrorCodeInvalidDynamicLinkDomain:
+      return kFIRAuthErrorMessageInvalidDynamicLinkDomain;
+    case FIRAuthErrorCodeWebInternalError:
+      return kFIRAuthErrorMessageWebInternalError;
+    case FIRAuthErrorCodeWebSignInUserInteractionFailure:
+      return kFIRAuthErrorMessageAppVerificationUserInteractionFailure;
+    case FIRAuthErrorCodeMalformedJWT:
+      return kFIRAuthErrorMessageMalformedJWT;
+    case FIRAuthErrorCodeLocalPlayerNotAuthenticated:
+      return kFIRAuthErrorMessageLocalPlayerNotAuthenticated;
+    case FIRAuthErrorCodeGameKitNotLinked:
+      return kFIRAuthErrorMessageGameKitNotLinked;
+    case FIRAuthErrorCodeSecondFactorRequired:
+      return kFIRAuthErrorMessageSecondFactorRequired;
+    case FIRAuthErrorCodeMissingMultiFactorSession:
+      return FIRAuthErrorMessageMissingMultiFactorSession;
+    case FIRAuthErrorCodeMissingMultiFactorInfo:
+      return FIRAuthErrorMessageMissingMultiFactorInfo;
+    case FIRAuthErrorCodeInvalidMultiFactorSession:
+      return FIRAuthErrorMessageInvalidMultiFactorSession;
+    case FIRAuthErrorCodeMultiFactorInfoNotFound:
+      return FIRAuthErrorMessageMultiFactorInfoNotFound;
+    case FIRAuthErrorCodeAdminRestrictedOperation:
+      return FIRAuthErrorMessageAdminRestrictedOperation;
+    case FIRAuthErrorCodeUnverifiedEmail:
+      return FIRAuthErrorMessageUnverifiedEmail;
+    case FIRAuthErrorCodeSecondFactorAlreadyEnrolled:
+      return FIRAuthErrorMessageSecondFactorAlreadyEnrolled;
+    case FIRAuthErrorCodeMaximumSecondFactorCountExceeded:
+      return FIRAuthErrorMessageMaximumSecondFactorCountExceeded;
+    case FIRAuthErrorCodeUnsupportedFirstFactor:
+      return FIRAuthErrorMessageUnsupportedFirstFactor;
+    case FIRAuthErrorCodeEmailChangeNeedsVerification:
+      return FIRAuthErrorMessageEmailChangeNeedsVerification;
+    case FIRAuthErrorCodeDynamicLinkNotActivated:
+      return kFIRAuthErrorMessageDynamicLinkNotActivated;
+    case FIRAuthErrorCodeRejectedCredential:
+      return kFIRAuthErrorMessageRejectedCredential;
+    case FIRAuthErrorCodeMissingOrInvalidNonce:
+      return kFIRAuthErrorMessageMissingOrInvalidNonce;
+    case FIRAuthErrorCodeTenantIDMismatch:
+      return kFIRAuthErrorMessageTenantIDMismatch;
+    case FIRAuthErrorCodeUnsupportedTenantOperation:
+      return kFIRAuthErrorMessageUnsupportedTenantOperation;
+  }
+}
+
+/** @var FIRAuthErrorCodeString
+    @brief The the error short string, based on the error code.
+    @remarks No default case so that we get a compiler warning if a new value was added to the enum.
+ */
+static NSString *const FIRAuthErrorCodeString(FIRAuthErrorCode code) {
+  switch (code) {
+    case FIRAuthErrorCodeInvalidCustomToken:
+      return @"ERROR_INVALID_CUSTOM_TOKEN";
+    case FIRAuthErrorCodeCustomTokenMismatch:
+      return @"ERROR_CUSTOM_TOKEN_MISMATCH";
+    case FIRAuthErrorCodeInvalidEmail:
+      return @"ERROR_INVALID_EMAIL";
+    case FIRAuthErrorCodeInvalidCredential:
+      return @"ERROR_INVALID_CREDENTIAL";
+    case FIRAuthErrorCodeUserDisabled:
+      return @"ERROR_USER_DISABLED";
+    case FIRAuthErrorCodeEmailAlreadyInUse:
+      return @"ERROR_EMAIL_ALREADY_IN_USE";
+    case FIRAuthErrorCodeWrongPassword:
+      return @"ERROR_WRONG_PASSWORD";
+    case FIRAuthErrorCodeTooManyRequests:
+      return @"ERROR_TOO_MANY_REQUESTS";
+    case FIRAuthErrorCodeAccountExistsWithDifferentCredential:
+      return @"ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL";
+    case FIRAuthErrorCodeRequiresRecentLogin:
+      return @"ERROR_REQUIRES_RECENT_LOGIN";
+    case FIRAuthErrorCodeProviderAlreadyLinked:
+      return @"ERROR_PROVIDER_ALREADY_LINKED";
+    case FIRAuthErrorCodeNoSuchProvider:
+      return @"ERROR_NO_SUCH_PROVIDER";
+    case FIRAuthErrorCodeInvalidUserToken:
+      return @"ERROR_INVALID_USER_TOKEN";
+    case FIRAuthErrorCodeNetworkError:
+      return @"ERROR_NETWORK_REQUEST_FAILED";
+    case FIRAuthErrorCodeKeychainError:
+      return @"ERROR_KEYCHAIN_ERROR";
+    case FIRAuthErrorCodeMissingClientIdentifier:
+      return @"ERROR_MISSING_CLIENT_IDENTIFIER";
+    case FIRAuthErrorCodeUserTokenExpired:
+      return @"ERROR_USER_TOKEN_EXPIRED";
+    case FIRAuthErrorCodeUserNotFound:
+      return @"ERROR_USER_NOT_FOUND";
+    case FIRAuthErrorCodeInvalidAPIKey:
+      return @"ERROR_INVALID_API_KEY";
+    case FIRAuthErrorCodeCredentialAlreadyInUse:
+      return @"ERROR_CREDENTIAL_ALREADY_IN_USE";
+    case FIRAuthErrorCodeInternalError:
+      return @"ERROR_INTERNAL_ERROR";
+    case FIRAuthErrorCodeUserMismatch:
+      return @"ERROR_USER_MISMATCH";
+    case FIRAuthErrorCodeOperationNotAllowed:
+      return @"ERROR_OPERATION_NOT_ALLOWED";
+    case FIRAuthErrorCodeWeakPassword:
+      return @"ERROR_WEAK_PASSWORD";
+    case FIRAuthErrorCodeAppNotAuthorized:
+      return @"ERROR_APP_NOT_AUTHORIZED";
+    case FIRAuthErrorCodeExpiredActionCode:
+      return @"ERROR_EXPIRED_ACTION_CODE";
+    case FIRAuthErrorCodeInvalidActionCode:
+      return @"ERROR_INVALID_ACTION_CODE";
+    case FIRAuthErrorCodeInvalidMessagePayload:
+      return @"ERROR_INVALID_MESSAGE_PAYLOAD";
+    case FIRAuthErrorCodeInvalidSender:
+      return @"ERROR_INVALID_SENDER";
+    case FIRAuthErrorCodeInvalidRecipientEmail:
+      return @"ERROR_INVALID_RECIPIENT_EMAIL";
+    case FIRAuthErrorCodeMissingIosBundleID:
+      return @"ERROR_MISSING_IOS_BUNDLE_ID";
+    case FIRAuthErrorCodeMissingAndroidPackageName:
+      return @"ERROR_MISSING_ANDROID_PKG_NAME";
+    case FIRAuthErrorCodeUnauthorizedDomain:
+      return @"ERROR_UNAUTHORIZED_DOMAIN";
+    case FIRAuthErrorCodeInvalidContinueURI:
+      return @"ERROR_INVALID_CONTINUE_URI";
+    case FIRAuthErrorCodeMissingContinueURI:
+      return @"ERROR_MISSING_CONTINUE_URI";
+    case FIRAuthErrorCodeMissingEmail:
+      return @"ERROR_MISSING_EMAIL";
+    case FIRAuthErrorCodeMissingPhoneNumber:
+      return @"ERROR_MISSING_PHONE_NUMBER";
+    case FIRAuthErrorCodeInvalidPhoneNumber:
+      return @"ERROR_INVALID_PHONE_NUMBER";
+    case FIRAuthErrorCodeMissingVerificationCode:
+      return @"ERROR_MISSING_VERIFICATION_CODE";
+    case FIRAuthErrorCodeInvalidVerificationCode:
+      return @"ERROR_INVALID_VERIFICATION_CODE";
+    case FIRAuthErrorCodeMissingVerificationID:
+      return @"ERROR_MISSING_VERIFICATION_ID";
+    case FIRAuthErrorCodeInvalidVerificationID:
+      return @"ERROR_INVALID_VERIFICATION_ID";
+    case FIRAuthErrorCodeSessionExpired:
+      return @"ERROR_SESSION_EXPIRED";
+    case FIRAuthErrorCodeMissingAppCredential:
+      return @"MISSING_APP_CREDENTIAL";
+    case FIRAuthErrorCodeInvalidAppCredential:
+      return @"INVALID_APP_CREDENTIAL";
+    case FIRAuthErrorCodeQuotaExceeded:
+      return @"ERROR_QUOTA_EXCEEDED";
+    case FIRAuthErrorCodeMissingAppToken:
+      return @"ERROR_MISSING_APP_TOKEN";
+    case FIRAuthErrorCodeNotificationNotForwarded:
+      return @"ERROR_NOTIFICATION_NOT_FORWARDED";
+    case FIRAuthErrorCodeAppNotVerified:
+      return @"ERROR_APP_NOT_VERIFIED";
+    case FIRAuthErrorCodeCaptchaCheckFailed:
+      return @"ERROR_CAPTCHA_CHECK_FAILED";
+    case FIRAuthErrorCodeWebContextAlreadyPresented:
+      return @"ERROR_WEB_CONTEXT_ALREADY_PRESENTED";
+    case FIRAuthErrorCodeWebContextCancelled:
+      return @"ERROR_WEB_CONTEXT_CANCELLED";
+    case FIRAuthErrorCodeInvalidClientID:
+      return @"ERROR_INVALID_CLIENT_ID";
+    case FIRAuthErrorCodeAppVerificationUserInteractionFailure:
+      return @"ERROR_APP_VERIFICATION_FAILED";
+    case FIRAuthErrorCodeWebNetworkRequestFailed:
+      return @"ERROR_WEB_NETWORK_REQUEST_FAILED";
+    case FIRAuthErrorCodeNullUser:
+      return @"ERROR_NULL_USER";
+    case FIRAuthErrorCodeInvalidProviderID:
+      return @"ERROR_INVALID_PROVIDER_ID";
+    case FIRAuthErrorCodeInvalidDynamicLinkDomain:
+      return @"ERROR_INVALID_DYNAMIC_LINK_DOMAIN";
+    case FIRAuthErrorCodeWebInternalError:
+      return @"ERROR_WEB_INTERNAL_ERROR";
+    case FIRAuthErrorCodeWebSignInUserInteractionFailure:
+      return @"ERROR_WEB_USER_INTERACTION_FAILURE";
+    case FIRAuthErrorCodeMalformedJWT:
+      return @"ERROR_MALFORMED_JWT";
+    case FIRAuthErrorCodeLocalPlayerNotAuthenticated:
+      return @"ERROR_LOCAL_PLAYER_NOT_AUTHENTICATED";
+    case FIRAuthErrorCodeGameKitNotLinked:
+      return @"ERROR_GAME_KIT_NOT_LINKED";
+    case FIRAuthErrorCodeSecondFactorRequired:
+      return @"ERROR_SECOND_FACTOR_REQUIRED";
+    case FIRAuthErrorCodeMissingMultiFactorSession:
+      return @"ERROR_MISSING_MULTI_FACTOR_SESSION";
+    case FIRAuthErrorCodeMissingMultiFactorInfo:
+      return @"ERROR_MISSING_MULTI_FACTOR_INFO";
+    case FIRAuthErrorCodeInvalidMultiFactorSession:
+      return @"ERROR_INVALID_MULTI_FACTOR_SESSION";
+    case FIRAuthErrorCodeMultiFactorInfoNotFound:
+      return @"ERROR_MULTI_FACTOR_INFO_NOT_FOUND";
+    case FIRAuthErrorCodeAdminRestrictedOperation:
+      return @"ERROR_ADMIN_RESTRICTED_OPERATION";
+    case FIRAuthErrorCodeUnverifiedEmail:
+      return @"ERROR_UNVERIFIED_EMAIL";
+    case FIRAuthErrorCodeSecondFactorAlreadyEnrolled:
+      return @"ERROR_SECOND_FACTOR_ALREADY_ENROLLED";
+    case FIRAuthErrorCodeMaximumSecondFactorCountExceeded:
+      return @"ERROR_MAXIMUM_SECOND_FACTOR_COUNT_EXCEEDED";
+    case FIRAuthErrorCodeUnsupportedFirstFactor:
+      return @"ERROR_UNSUPPORTED_FIRST_FACTOR";
+    case FIRAuthErrorCodeEmailChangeNeedsVerification:
+      return @"ERROR_EMAIL_CHANGE_NEEDS_VERIFICATION";
+    case FIRAuthErrorCodeDynamicLinkNotActivated:
+      return @"ERROR_DYNAMIC_LINK_NOT_ACTIVATED";
+    case FIRAuthErrorCodeRejectedCredential:
+      return @"ERROR_REJECTED_CREDENTIAL";
+    case FIRAuthErrorCodeMissingOrInvalidNonce:
+      return @"ERROR_MISSING_OR_INVALID_NONCE";
+    case FIRAuthErrorCodeTenantIDMismatch:
+      return @"ERROR_TENANT_ID_MISMATCH";
+    case FIRAuthErrorCodeUnsupportedTenantOperation:
+      return @"ERROR_UNSUPPORTED_TENANT_OPERATION";
+  }
+}
+
+@implementation FIRAuthErrorUtils
+
++ (NSError *)errorWithCode:(FIRAuthInternalErrorCode)code {
+  return [self errorWithCode:code message:nil];
+}
+
++ (NSError *)errorWithCode:(FIRAuthInternalErrorCode)code message:(nullable NSString *)message {
+  NSDictionary *userInfo = nil;
+  if (message.length) {
+    userInfo = @{NSLocalizedDescriptionKey : message};
+  }
+  return [self errorWithCode:code userInfo:userInfo];
+}
+
++ (NSError *)errorWithCode:(FIRAuthInternalErrorCode)code
+           underlyingError:(nullable NSError *)underlyingError {
+  NSDictionary *errorUserInfo;
+  if (underlyingError) {
+    errorUserInfo = @{NSUnderlyingErrorKey : underlyingError};
+  }
+  return [self errorWithCode:code userInfo:errorUserInfo];
+}
+
++ (NSError *)errorWithCode:(FIRAuthInternalErrorCode)code
+                  userInfo:(nullable NSDictionary *)userInfo {
+  BOOL isPublic = (code & FIRAuthPublicErrorCodeFlag) == FIRAuthPublicErrorCodeFlag;
+  if (isPublic) {
+    // This is a public error. Return it as a public error and add a description.
+    NSInteger errorCode = code & ~FIRAuthPublicErrorCodeFlag;
+    NSMutableDictionary *errorUserInfo = [NSMutableDictionary dictionary];
+    if (userInfo) {
+      [errorUserInfo addEntriesFromDictionary:userInfo];
+    }
+    if (!errorUserInfo[NSLocalizedDescriptionKey]) {
+      errorUserInfo[NSLocalizedDescriptionKey] = FIRAuthErrorDescription(errorCode);
+    }
+    errorUserInfo[FIRAuthErrorUserInfoNameKey] = FIRAuthErrorCodeString(errorCode);
+    return [NSError errorWithDomain:FIRAuthErrorDomain code:errorCode userInfo:errorUserInfo];
+  } else {
+    // This is an internal error. Wrap it in an internal error.
+    NSError *error = [NSError errorWithDomain:FIRAuthInternalErrorDomain
+                                         code:code
+                                     userInfo:userInfo];
+    return [self errorWithCode:FIRAuthInternalErrorCodeInternalError underlyingError:error];
+  }
+}
+
++ (NSError *)RPCRequestEncodingErrorWithUnderlyingError:(NSError *)underlyingError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeRPCRequestEncodingError
+             underlyingError:underlyingError];
+}
+
++ (NSError *)JSONSerializationErrorForUnencodableType {
+  return [self errorWithCode:FIRAuthInternalErrorCodeJSONSerializationError];
+}
+
++ (NSError *)JSONSerializationErrorWithUnderlyingError:(NSError *)underlyingError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeJSONSerializationError
+             underlyingError:underlyingError];
+}
+
++ (NSError *)networkErrorWithUnderlyingError:(NSError *)underlyingError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeNetworkError underlyingError:underlyingError];
+}
+
++ (NSError *)unexpectedErrorResponseWithData:(NSData *)data
+                             underlyingError:(NSError *)underlyingError {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (data) {
+    userInfo[FIRAuthErrorUserInfoDataKey] = data;
+  }
+  if (underlyingError) {
+    userInfo[NSUnderlyingErrorKey] = underlyingError;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnexpectedErrorResponse
+                    userInfo:[userInfo copy]];
+}
+
++ (NSError *)unexpectedErrorResponseWithDeserializedResponse:(id)deserializedResponse {
+  NSDictionary *userInfo;
+  if (deserializedResponse) {
+    userInfo = @{
+      FIRAuthErrorUserInfoDeserializedResponseKey : deserializedResponse,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnexpectedErrorResponse userInfo:userInfo];
+}
+
++ (NSError *)malformedJWTErrorWithToken:(NSString *)token
+                        underlyingError:(NSError *_Nullable)underlyingError {
+  NSMutableDictionary *userInfo =
+      [NSMutableDictionary dictionaryWithObject:kFIRAuthErrorMessageMalformedJWT
+                                         forKey:NSLocalizedDescriptionKey];
+  [userInfo setObject:token forKey:FIRAuthErrorUserInfoDataKey];
+  if (underlyingError != nil) {
+    [userInfo setObject:underlyingError forKey:NSUnderlyingErrorKey];
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeMalformedJWT userInfo:[userInfo copy]];
+}
+
++ (NSError *)unexpectedResponseWithData:(NSData *)data underlyingError:(NSError *)underlyingError {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (data) {
+    userInfo[FIRAuthErrorUserInfoDataKey] = data;
+  }
+  if (underlyingError) {
+    userInfo[NSUnderlyingErrorKey] = underlyingError;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnexpectedResponse userInfo:[userInfo copy]];
+}
+
++ (NSError *)unexpectedResponseWithDeserializedResponse:(id)deserializedResponse {
+  NSDictionary *userInfo;
+  if (deserializedResponse) {
+    userInfo = @{
+      FIRAuthErrorUserInfoDeserializedResponseKey : deserializedResponse,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnexpectedResponse userInfo:userInfo];
+}
+
++ (NSError *)unexpectedResponseWithDeserializedResponse:(nullable id)deserializedResponse
+                                        underlyingError:(NSError *)underlyingError {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (deserializedResponse) {
+    userInfo[FIRAuthErrorUserInfoDeserializedResponseKey] = deserializedResponse;
+  }
+  if (underlyingError) {
+    userInfo[NSUnderlyingErrorKey] = underlyingError;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnexpectedResponse userInfo:[userInfo copy]];
+}
+
++ (NSError *)RPCResponseDecodingErrorWithDeserializedResponse:(id)deserializedResponse
+                                              underlyingError:(NSError *)underlyingError {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (deserializedResponse) {
+    userInfo[FIRAuthErrorUserInfoDeserializedResponseKey] = deserializedResponse;
+  }
+  if (underlyingError) {
+    userInfo[NSUnderlyingErrorKey] = underlyingError;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeRPCResponseDecodingError
+                    userInfo:[userInfo copy]];
+}
+
++ (NSError *)emailAlreadyInUseErrorWithEmail:(nullable NSString *)email {
+  NSDictionary *userInfo;
+  if (email.length) {
+    userInfo = @{
+      FIRAuthErrorUserInfoEmailKey : email,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeEmailAlreadyInUse userInfo:userInfo];
+}
+
++ (NSError *)userDisabledErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUserDisabled message:message];
+}
+
++ (NSError *)wrongPasswordErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeWrongPassword message:message];
+}
+
++ (NSError *)tooManyRequestsErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeTooManyRequests message:message];
+}
+
++ (NSError *)invalidCustomTokenErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidCustomToken message:message];
+}
+
++ (NSError *)customTokenMistmatchErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeCustomTokenMismatch message:message];
+}
+
++ (NSError *)invalidCredentialErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidCredential message:message];
+}
+
++ (NSError *)requiresRecentLoginErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeRequiresRecentLogin message:message];
+}
+
++ (NSError *)invalidUserTokenErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidUserToken message:message];
+}
+
++ (NSError *)invalidEmailErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidEmail message:message];
+}
+
++ (NSError *)accountExistsWithDifferentCredentialErrorWithEmail:(nullable NSString *)email
+                                              updatedCredential:
+                                                  (nullable FIRAuthCredential *)updatedCredential {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (email) {
+    userInfo[FIRAuthErrorUserInfoEmailKey] = email;
+  }
+  if (updatedCredential) {
+    userInfo[FIRAuthErrorUserInfoUpdatedCredentialKey] = updatedCredential;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeAccountExistsWithDifferentCredential
+                    userInfo:userInfo];
+}
+
++ (NSError *)providerAlreadyLinkedError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeProviderAlreadyLinked];
+}
+
++ (NSError *)noSuchProviderError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeNoSuchProvider];
+}
+
++ (NSError *)userTokenExpiredErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUserTokenExpired message:message];
+}
+
++ (NSError *)userNotFoundErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUserNotFound message:message];
+}
+
++ (NSError *)invalidAPIKeyError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidAPIKey];
+}
+
++ (NSError *)userMismatchError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUserMismatch];
+}
+
++ (NSError *)credentialAlreadyInUseErrorWithMessage:(nullable NSString *)message
+                                         credential:(nullable FIRAuthCredential *)credential
+                                              email:(nullable NSString *)email {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (credential) {
+    userInfo[FIRAuthErrorUserInfoUpdatedCredentialKey] = credential;
+  }
+  if (email.length) {
+    userInfo[FIRAuthErrorUserInfoEmailKey] = email;
+  }
+  if (userInfo.count) {
+    return [self errorWithCode:FIRAuthInternalErrorCodeCredentialAlreadyInUse userInfo:userInfo];
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeCredentialAlreadyInUse message:message];
+}
+
++ (NSError *)operationNotAllowedErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeOperationNotAllowed message:message];
+}
+
++ (NSError *)weakPasswordErrorWithServerResponseReason:(nullable NSString *)reason {
+  NSDictionary *userInfo;
+  if (reason.length) {
+    userInfo = @{
+      NSLocalizedFailureReasonErrorKey : reason,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeWeakPassword userInfo:userInfo];
+}
+
++ (NSError *)appNotAuthorizedError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeAppNotAuthorized];
+}
+
++ (NSError *)expiredActionCodeErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeExpiredActionCode message:message];
+}
+
++ (NSError *)invalidActionCodeErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidActionCode message:message];
+}
+
++ (NSError *)invalidMessagePayloadErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidMessagePayload message:message];
+}
+
++ (NSError *)invalidSenderErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidSender message:message];
+}
+
++ (NSError *)invalidRecipientEmailErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidRecipientEmail message:message];
+}
+
++ (NSError *)missingIosBundleIDErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthinternalErrorCodeMissingIosBundleID message:message];
+}
+
++ (NSError *)missingAndroidPackageNameErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingAndroidPackageName message:message];
+}
+
++ (NSError *)unauthorizedDomainErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnauthorizedDomain message:message];
+}
+
++ (NSError *)invalidContinueURIErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidContinueURI message:message];
+}
+
++ (NSError *)missingContinueURIErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingContinueURI message:message];
+}
+
++ (NSError *)missingEmailErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingEmail message:message];
+}
+
++ (NSError *)missingPhoneNumberErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingPhoneNumber message:message];
+}
+
++ (NSError *)invalidPhoneNumberErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidPhoneNumber message:message];
+}
+
++ (NSError *)missingVerificationCodeErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingVerificationCode message:message];
+}
+
++ (NSError *)invalidVerificationCodeErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidVerificationCode message:message];
+}
+
++ (NSError *)missingVerificationIDErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingVerificationID message:message];
+}
+
++ (NSError *)invalidVerificationIDErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidVerificationID message:message];
+}
+
++ (NSError *)sessionExpiredErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeSessionExpired message:message];
+}
+
++ (NSError *)missingAppCredentialWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingAppCredential message:message];
+}
+
++ (NSError *)invalidAppCredentialWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidAppCredential message:message];
+}
+
++ (NSError *)quotaExceededErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeQuotaExceeded message:message];
+}
+
++ (NSError *)missingAppTokenErrorWithUnderlyingError:(nullable NSError *)underlyingError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingAppToken
+             underlyingError:underlyingError];
+}
+
++ (NSError *)localPlayerNotAuthenticatedError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeLocalPlayerNotAuthenticated];
+}
+
++ (NSError *)gameKitNotLinkedError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeGameKitNotLinked];
+}
+
+#if TARGET_OS_IOS
++ (NSError *)secondFactorRequiredErrorWithPendingCredential:(NSString *)MFAPendingCredential
+                                                      hints:(NSArray<FIRMultiFactorInfo *> *)hints {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+  if (MFAPendingCredential && hints) {
+    FIRMultiFactorResolver *resolver =
+        [[FIRMultiFactorResolver alloc] initWithMFAPendingCredential:MFAPendingCredential
+                                                               hints:hints];
+    userInfo[FIRAuthErrorUserInfoMultiFactorResolverKey] = resolver;
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeSecondFactorRequired userInfo:userInfo];
+}
+#endif
+
++ (NSError *)notificationNotForwardedError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeNotificationNotForwarded];
+}
+
++ (NSError *)appNotVerifiedErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeAppNotVerified message:message];
+}
+
++ (NSError *)missingClientIdentifierErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingClientIdentifier message:message];
+}
+
++ (NSError *)captchaCheckFailedErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeCaptchaCheckFailed message:message];
+}
+
++ (NSError *)webContextAlreadyPresentedErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeWebContextAlreadyPresented message:message];
+}
+
++ (NSError *)webContextCancelledErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeWebContextCancelled message:message];
+}
+
++ (NSError *)appVerificationUserInteractionFailureWithReason:(NSString *)reason {
+  NSDictionary *userInfo;
+  if (reason.length) {
+    userInfo = @{
+      NSLocalizedFailureReasonErrorKey : reason,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeAppVerificationUserInteractionFailure
+                    userInfo:userInfo];
+}
+
++ (NSError *)webSignInUserInteractionFailureWithReason:(nullable NSString *)reason {
+  NSDictionary *userInfo;
+  if (reason.length) {
+    userInfo = @{
+      NSLocalizedFailureReasonErrorKey : reason,
+    };
+  }
+  return [self errorWithCode:FIRAuthInternalErrorCodeWebSignInUserInteractionFailure
+                    userInfo:userInfo];
+}
+
++ (nullable NSError *)URLResponseErrorWithCode:(NSString *)code
+                                       message:(nullable NSString *)message {
+  if ([code isEqualToString:kURLResponseErrorCodeInvalidClientID]) {
+    return [self errorWithCode:FIRAuthInternalErrorCodeInvalidClientID message:message];
+  }
+  if ([code isEqualToString:kURLResponseErrorCodeNetworkRequestFailed]) {
+    return [self errorWithCode:FIRAuthInternalErrorCodeWebNetworkRequestFailed message:message];
+  }
+  if ([code isEqualToString:kURLResponseErrorCodeInternalError]) {
+    return [self errorWithCode:FIRAuthInternalErrorCodeWebInternalError message:message];
+  }
+  return nil;
+}
+
++ (NSError *)nullUserErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeNullUser message:message];
+}
+
++ (NSError *)invalidProviderIDErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidProviderID message:message];
+}
+
++ (NSError *)invalidDynamicLinkDomainErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeInvalidDynamicLinkDomain message:message];
+}
+
++ (NSError *)missingOrInvalidNonceErrorWithMessage:(nullable NSString *)message {
+  return [self errorWithCode:FIRAuthInternalErrorCodeMissingOrInvalidNonce message:message];
+}
+
++ (NSError *)keychainErrorWithFunction:(NSString *)keychainFunction status:(OSStatus)status {
+  NSString *failureReason = [NSString stringWithFormat:@"%@ (%li)", keychainFunction, (long)status];
+  return [self errorWithCode:FIRAuthInternalErrorCodeKeychainError
+                    userInfo:@{
+                      NSLocalizedFailureReasonErrorKey : failureReason,
+                    }];
+}
+
++ (NSError *)tenantIDMismatchError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeTenantIDMismatch];
+}
+
++ (NSError *)unsupportedTenantOperationError {
+  return [self errorWithCode:FIRAuthInternalErrorCodeUnsupportedTenantOperation];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h
new file mode 100644
index 0000000..3ae9159
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthExceptionUtils
+    @brief Utility class used to raise standardized Auth related exceptions.
+*/
+@interface FIRAuthExceptionUtils : NSObject
+
+/** @fn raiseInvalidParameterExceptionWithReason:
+    @brief raises the "invalid parameter" exception
+    @param reason string will contain a description of the error.
+ */
++ (void)raiseInvalidParameterExceptionWithReason:(nullable NSString *)reason;
+
+/** @fn raiseMethodNotImplementedExceptionWithReason:
+    @brief raises the "method not implemented" exception
+    @param reason string will contain a description of the error.
+    @see FIRMethodNotImplementedException
+ */
++ (void)raiseMethodNotImplementedExceptionWithReason:(nullable NSString *)reason;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.m
new file mode 100644
index 0000000..783d4a4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.m	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthExceptionUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var FIRMethodNotImplementedException
+    @brief The name of the "Method Not Implemented" exception.
+ */
+static NSString *const FIRMethodNotImplementedException = @"FIRMethodNotImplementedException";
+
+@implementation FIRAuthExceptionUtils
+
++ (void)raiseInvalidParameterExceptionWithReason:(nullable NSString *)reason {
+  [NSException raise:NSInvalidArgumentException format:@"%@", reason];
+}
+
++ (void)raiseMethodNotImplementedExceptionWithReason:(nullable NSString *)reason {
+  NSException *exception = [NSException exceptionWithName:FIRMethodNotImplementedException
+                                                   reason:reason
+                                                 userInfo:nil];
+  [exception raise];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthInternalErrors.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthInternalErrors.h
new file mode 100644
index 0000000..d8a2970
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthInternalErrors.h	
@@ -0,0 +1,543 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthErrors.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @var FIRAuthPublicErrorCodeFlag
+    @brief Bitmask value indicating the error represents a public error code when this bit is
+        zeroed. Error codes which don't contain this flag will be wrapped in an @c NSError whose
+        code is @c FIRAuthErrorCodeInternalError.
+ */
+static const NSInteger FIRAuthPublicErrorCodeFlag = 1 << 20;
+
+/** @var FIRAuthInternalErrorDomain
+    @brief The Firebase Auth error domain for internal errors.
+ */
+extern NSString *const FIRAuthInternalErrorDomain;
+
+/** @var FIRAuthErrorUserInfoDeserializedResponseKey
+    @brief Errors with the code @c FIRAuthErrorCodeUnexpectedResponseError,
+        @c FIRAuthErrorCodeUnexpectedErrorResponseError, and
+        @c FIRAuthInternalErrorCodeRPCResponseDecodingError may contain an @c NSError.userInfo
+        dictionary which contains this key. The value associated with this key is an object of
+        unspecified contents containing the deserialized server response.
+ */
+extern NSString *const FIRAuthErrorUserInfoDeserializedResponseKey;
+
+/** @var FIRAuthErrorUserInfoDataKey
+    @brief Errors with the code @c FIRAuthErrorCodeUnexpectedResponseError or
+        @c FIRAuthErrorCodeUnexpectedErrorResponseError may contain an @c NSError.userInfo
+        dictionary which contains this key. The value associated with this key is an @c NSString
+        which represents the response from a server to an RPC which could not be deserialized.
+ */
+extern NSString *const FIRAuthErrorUserInfoDataKey;
+
+/** @var FIRAuthInternalErrorCode
+    @brief Error codes used internally by Firebase Auth.
+    @remarks All errors are generated using an internal error code. These errors are automatically
+        converted to the appropriate public version of the @c NSError by the methods in
+        @c FIRAuthErrorUtils
+ */
+typedef NS_ENUM(NSInteger, FIRAuthInternalErrorCode) {
+  /** @var FIRAuthInternalErrorCodeNetworkError
+      @brief Indicates a network error occurred (such as a timeout, interrupted connection, or
+          unreachable host.)
+      @remarks These types of errors are often recoverable with a retry.
+
+          See the @c NSUnderlyingError value in the @c NSError.userInfo dictionary for details about
+          the network error which occurred.
+   */
+  FIRAuthInternalErrorCodeNetworkError = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeNetworkError,
+
+  /** @var FIRAuthInternalErrorCodeEmailAlreadyInUse
+      @brief The email used to attempt a sign-up already exists.
+   */
+  FIRAuthInternalErrorCodeEmailAlreadyInUse = FIRAuthPublicErrorCodeFlag |
+                                              FIRAuthErrorCodeEmailAlreadyInUse,
+
+  /** @var FIRAuthInternalErrorCodeUserDisabled
+      @brief Indicates the user's account is disabled on the server side.
+   */
+  FIRAuthInternalErrorCodeUserDisabled = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeUserDisabled,
+
+  /** @var FIRAuthInternalErrorCodeWrongPassword
+      @brief Indicates the user attempted sign in with a wrong password
+   */
+  FIRAuthInternalErrorCodeWrongPassword = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeWrongPassword,
+
+  /** @var FIRAuthInternalErrorCodeKeychainError
+      @brief Indicates an error occurred accessing the keychain.
+      @remarks The @c NSLocalizedFailureReasonErrorKey field in the @c NSError.userInfo dictionary
+          will contain more information about the error encountered.
+   */
+  FIRAuthInternalErrorCodeKeychainError = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeKeychainError,
+
+  /** @var FIRAuthInternalErrorCodeMissingClientIdentifier
+      @brief Indicates an error for when the client identifier is missing.
+   */
+  FIRAuthInternalErrorCodeMissingClientIdentifier = FIRAuthPublicErrorCodeFlag |
+                                                    FIRAuthErrorCodeMissingClientIdentifier,
+
+  /** @var FIRAuthInternalErrorCodeInternalError
+      @brief An internal error occurred.
+      @remarks This value is here for consistency. It's also used to make the implementation of
+          wrapping internal errors simpler.
+   */
+  FIRAuthInternalErrorCodeInternalError = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeInternalError,
+
+  /** @var FIRAuthInternalErrorCodeTooManyRequests
+      @brief Indicates that too many requests were made to a server method.
+   */
+  FIRAuthInternalErrorCodeTooManyRequests = FIRAuthPublicErrorCodeFlag |
+                                            FIRAuthErrorCodeTooManyRequests,
+
+  /** @var FIRAuthInternalErrorCodeInvalidCustomToken
+      @brief Indicates a validation error with the custom token.
+   */
+  FIRAuthInternalErrorCodeInvalidCustomToken = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeInvalidCustomToken,
+
+  /** @var FIRAuthInternalErrorCodeCredentialMismatch
+      @brief Indicates the service account and the API key belong to different projects.
+   */
+  FIRAuthInternalErrorCodeCustomTokenMismatch = FIRAuthPublicErrorCodeFlag |
+                                                FIRAuthErrorCodeCustomTokenMismatch,
+
+  /** @var FIRAuthInternalErrorCodeInvalidCredential
+      @brief Indicates the IDP token or requestUri is invalid.
+   */
+  FIRAuthInternalErrorCodeInvalidCredential = FIRAuthPublicErrorCodeFlag |
+                                              FIRAuthErrorCodeInvalidCredential,
+
+  /** @var FIRAuthInternalErrorCodeRequiresRecentLogin
+      @brief Indicates the user has attemped to change email or password more than 5 minutes after
+          signing in.
+   */
+  FIRAuthInternalErrorCodeRequiresRecentLogin = FIRAuthPublicErrorCodeFlag |
+                                                FIRAuthErrorCodeRequiresRecentLogin,
+
+  /** @var FIRAuthInternalErrorCodeInvalidUserToken
+     @brief Indicates user's saved auth credential is invalid, the user needs to sign in again.
+  */
+  FIRAuthInternalErrorCodeInvalidUserToken = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeInvalidUserToken,
+
+  /** @var FIRAuthInternalErrorCodeInvalidEmail
+     @brief Indicates the email identifier is invalid.
+  */
+  FIRAuthInternalErrorCodeInvalidEmail = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeInvalidEmail,
+
+  /** @var FIRAuthInternalErrorCodeAccountExistsWithDifferentCredential
+      @brief Indicates account linking is needed.
+   */
+  FIRAuthInternalErrorCodeAccountExistsWithDifferentCredential =
+      FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeAccountExistsWithDifferentCredential,
+
+  /** @var FIRAuthInternalErrorCodeProviderAlreadyLinked
+      @brief Indicates an attempt to link a provider to which we are already linked.
+   */
+  FIRAuthInternalErrorCodeProviderAlreadyLinked = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeProviderAlreadyLinked,
+
+  /** @var FIRAuthInternalErrorCodeNoSuchProvider
+      @brief Indicates an attempt to unlink a provider that is not is not linked.
+   */
+  FIRAuthInternalErrorCodeNoSuchProvider = FIRAuthPublicErrorCodeFlag |
+                                           FIRAuthErrorCodeNoSuchProvider,
+
+  /** @var FIRAuthInternalErrorCodeUserTokenExpired
+      @brief Indicates the token issue time is older than account's valid_since time.
+   */
+  FIRAuthInternalErrorCodeUserTokenExpired = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeUserTokenExpired,
+
+  /** @var FIRAuthInternalErrorCodeUserNotFound
+      @brief Indicates the user account was been found.
+   */
+  FIRAuthInternalErrorCodeUserNotFound = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeUserNotFound,
+
+  /** @var FIRAuthInternalErrorCodeInvalidAPIKey
+      @brief Indicates an invalid API Key was supplied in the request.
+   */
+  FIRAuthInternalErrorCodeInvalidAPIKey = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeInvalidAPIKey,
+
+  /** @var FIRAuthInternalErrorCodeOperationNotAllowed
+      @brief Indicates that admin disabled sign-in with the specified IDP.
+   */
+  FIRAuthInternalErrorCodeOperationNotAllowed = FIRAuthPublicErrorCodeFlag |
+                                                FIRAuthErrorCodeOperationNotAllowed,
+
+  /** @var FIRAuthInternalErrorCodeUserMismatch
+      @brief Indicates that user attempted to reauthenticate with a user other than the current
+          user.
+   */
+  FIRAuthInternalErrorCodeUserMismatch = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeUserMismatch,
+
+  /** @var FIRAuthInternalErrorCodeCredentialAlreadyInUse
+      @brief Indicates an attempt to link with a credential that has already been linked with a
+          different Firebase account.
+   */
+  FIRAuthInternalErrorCodeCredentialAlreadyInUse = FIRAuthPublicErrorCodeFlag |
+                                                   FIRAuthErrorCodeCredentialAlreadyInUse,
+
+  /** @var FIRAuthInternalErrorCodeWeakPassword
+      @brief Indicates an attempt to set a password that is considered too weak.
+   */
+  FIRAuthInternalErrorCodeWeakPassword = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeWeakPassword,
+
+  /** @var FIRAuthInternalErrorCodeAppNotAuthorized
+      @brief Indicates the App is not authorized to use Firebase Authentication with the
+          provided API Key.
+   */
+  FIRAuthInternalErrorCodeAppNotAuthorized = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeAppNotAuthorized,
+
+  /** @var FIRAuthInternalErrorCodeExpiredActionCode
+      @brief Indicates the OOB code is expired.
+   */
+  FIRAuthInternalErrorCodeExpiredActionCode = FIRAuthPublicErrorCodeFlag |
+                                              FIRAuthErrorCodeExpiredActionCode,
+
+  /** @var FIRAuthInternalErrorCodeInvalidActionCode
+      @brief Indicates the OOB code is invalid.
+  */
+  FIRAuthInternalErrorCodeInvalidActionCode = FIRAuthPublicErrorCodeFlag |
+                                              FIRAuthErrorCodeInvalidActionCode,
+
+  /** Indicates that there are invalid parameters in the payload during a "send password reset email
+   *  " attempt.
+   */
+  FIRAuthInternalErrorCodeInvalidMessagePayload = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeInvalidMessagePayload,
+
+  /** Indicates that the sender email is invalid during a "send password reset email" attempt.
+   */
+  FIRAuthInternalErrorCodeInvalidSender = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeInvalidSender,
+
+  /** Indicates that the recipient email is invalid.
+   */
+  FIRAuthInternalErrorCodeInvalidRecipientEmail = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeInvalidRecipientEmail,
+
+  /** Indicates that the iOS bundle ID is missing when a iOS App Store ID is provided.
+   */
+  FIRAuthinternalErrorCodeMissingIosBundleID = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeMissingIosBundleID,
+
+  /** Indicates that the android package name is missing when the @c androidInstallApp flag is set
+        to true.
+   */
+  FIRAuthInternalErrorCodeMissingAndroidPackageName = FIRAuthPublicErrorCodeFlag |
+                                                      FIRAuthErrorCodeMissingAndroidPackageName,
+
+  /** Indicates that the domain specified in the continue URL is not allowlisted in the Firebase
+        console.
+   */
+  FIRAuthInternalErrorCodeUnauthorizedDomain = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeUnauthorizedDomain,
+
+  /** Indicates that the domain specified in the continue URI is not valid.
+   */
+  FIRAuthInternalErrorCodeInvalidContinueURI = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeInvalidContinueURI,
+
+  /** Indicates that a continue URI was not provided in a request to the backend which requires
+        one.
+   */
+  FIRAuthInternalErrorCodeMissingContinueURI = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeMissingContinueURI,
+
+  /** Indicates that an email address was expected but one was not provided.
+   */
+  FIRAuthInternalErrorCodeMissingEmail = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeMissingEmail,
+
+  /** Indicates that a phone number was not provided in a call to @c verifyPhoneNumber:completion:.
+   */
+  FIRAuthInternalErrorCodeMissingPhoneNumber = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeMissingPhoneNumber,
+
+  /** Indicates that an invalid phone number was provided in a call to @c
+      verifyPhoneNumber:completion:.
+   */
+  FIRAuthInternalErrorCodeInvalidPhoneNumber = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeInvalidPhoneNumber,
+
+  /** Indicates that the phone auth credential was created with an empty verification code.
+   */
+  FIRAuthInternalErrorCodeMissingVerificationCode = FIRAuthPublicErrorCodeFlag |
+                                                    FIRAuthErrorCodeMissingVerificationCode,
+
+  /** Indicates that an invalid verification code was used in the verifyPhoneNumber request.
+   */
+  FIRAuthInternalErrorCodeInvalidVerificationCode = FIRAuthPublicErrorCodeFlag |
+                                                    FIRAuthErrorCodeInvalidVerificationCode,
+
+  /** Indicates that the phone auth credential was created with an empty verification ID.
+   */
+  FIRAuthInternalErrorCodeMissingVerificationID = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeMissingVerificationID,
+
+  /** Indicates that the APNS device token is missing in the verifyClient request.
+   */
+  FIRAuthInternalErrorCodeMissingAppCredential = FIRAuthPublicErrorCodeFlag |
+                                                 FIRAuthErrorCodeMissingAppCredential,
+
+  /** Indicates that an invalid APNS device token was used in the verifyClient request.
+   */
+  FIRAuthInternalErrorCodeInvalidAppCredential = FIRAuthPublicErrorCodeFlag |
+                                                 FIRAuthErrorCodeInvalidAppCredential,
+
+  /** Indicates that the reCAPTCHA token is not valid.
+   */
+  FIRAuthInternalErrorCodeCaptchaCheckFailed = FIRAuthPublicErrorCodeFlag |
+                                               FIRAuthErrorCodeCaptchaCheckFailed,
+
+  /** Indicates that an invalid verification ID was used in the verifyPhoneNumber request.
+   */
+  FIRAuthInternalErrorCodeInvalidVerificationID = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeInvalidVerificationID,
+
+  /** Indicates that the quota of SMS messages for a given project has been exceeded.
+   */
+  FIRAuthInternalErrorCodeQuotaExceeded = FIRAuthPublicErrorCodeFlag |
+                                          FIRAuthErrorCodeQuotaExceeded,
+
+  /** Indicates that an attempt was made to present a new web context while one was already being
+        presented.
+   */
+  FIRAuthInternalErrorCodeWebContextAlreadyPresented = FIRAuthPublicErrorCodeFlag |
+                                                       FIRAuthErrorCodeWebContextAlreadyPresented,
+
+  /** Indicates that the URL presentation was cancelled prematurely by the user.
+   */
+  FIRAuthInternalErrorCodeWebContextCancelled = FIRAuthPublicErrorCodeFlag |
+                                                FIRAuthErrorCodeWebContextCancelled,
+
+  /** Indicates a general failure during the app verification flow.
+   */
+  FIRAuthInternalErrorCodeAppVerificationUserInteractionFailure =
+      FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeAppVerificationUserInteractionFailure,
+
+  /** Indicates that the clientID used to invoke a web flow is invalid.
+   */
+  FIRAuthInternalErrorCodeInvalidClientID = FIRAuthPublicErrorCodeFlag |
+                                            FIRAuthErrorCodeInvalidClientID,
+
+  /** Indicates that a network request within a SFSafariViewController or WKWebView failed.
+   */
+  FIRAuthInternalErrorCodeWebNetworkRequestFailed = FIRAuthPublicErrorCodeFlag |
+                                                    FIRAuthErrorCodeWebNetworkRequestFailed,
+
+  /** Indicates that an internal error occurred within a SFSafariViewController or WKWebView.
+   */
+  FIRAuthInternalErrorCodeWebInternalError = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeWebInternalError,
+
+  /** Indicates that an internal error occurred within a SFSafariViewController or WKWebView.
+   */
+  FIRAuthInternalErrorCodeWebSignInUserInteractionFailure =
+      FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeWebSignInUserInteractionFailure,
+
+  // The enum values between 17046 and 17051 are reserved and should NOT be used for new error
+  // codes.
+
+  /** Indicates that the SMS code has expired
+   */
+  FIRAuthInternalErrorCodeSessionExpired = FIRAuthPublicErrorCodeFlag |
+                                           FIRAuthErrorCodeSessionExpired,
+
+  FIRAuthInternalErrorCodeMissingAppToken = FIRAuthPublicErrorCodeFlag |
+                                            FIRAuthErrorCodeMissingAppToken,
+
+  FIRAuthInternalErrorCodeNotificationNotForwarded = FIRAuthPublicErrorCodeFlag |
+                                                     FIRAuthErrorCodeNotificationNotForwarded,
+
+  FIRAuthInternalErrorCodeAppNotVerified = FIRAuthPublicErrorCodeFlag |
+                                           FIRAuthErrorCodeAppNotVerified,
+
+  /** Indicates that the Game Center local player was not authenticated.
+   */
+  FIRAuthInternalErrorCodeLocalPlayerNotAuthenticated = FIRAuthPublicErrorCodeFlag |
+                                                        FIRAuthErrorCodeLocalPlayerNotAuthenticated,
+
+  /** Indicates that the Game Center local player was not authenticated.
+   */
+  FIRAuthInternalErrorCodeGameKitNotLinked = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeGameKitNotLinked,
+
+  /** Indicates that the second factor is required for sign in.
+   */
+  FIRAuthInternalErrorCodeSecondFactorRequired = FIRAuthPublicErrorCodeFlag |
+                                                 FIRAuthErrorCodeSecondFactorRequired,
+
+  /** Indicates that the multi factor session is missing.
+   */
+  FIRAuthInternalErrorCodeMissingMultiFactorSession = FIRAuthPublicErrorCodeFlag |
+                                                      FIRAuthErrorCodeMissingMultiFactorSession,
+
+  /** Indicates that the multi factor info is missing.
+   */
+  FIRAuthInternalErrorCodeMissingMultiFactorInfo = FIRAuthPublicErrorCodeFlag |
+                                                   FIRAuthErrorCodeMissingMultiFactorInfo,
+
+  /** Indicates that the multi factor session is invalid.
+   */
+  FIRAuthInternalErrorCodeInvalidMultiFactorSession = FIRAuthPublicErrorCodeFlag |
+                                                      FIRAuthErrorCodeInvalidMultiFactorSession,
+
+  /** Indicates that the multi factor info is not found.
+   */
+  FIRAuthInternalErrorCodeMultiFactorInfoNotFound = FIRAuthPublicErrorCodeFlag |
+                                                    FIRAuthErrorCodeMultiFactorInfoNotFound,
+
+  /** Indicates that the operation is admin only.
+   */
+  FIRAuthInternalErrorCodeAdminRestrictedOperation = FIRAuthPublicErrorCodeFlag |
+                                                     FIRAuthErrorCodeAdminRestrictedOperation,
+
+  /** Indicates that the email is unverified.
+   */
+  FIRAuthInternalErrorCodeUnverifiedEmail = FIRAuthPublicErrorCodeFlag |
+                                            FIRAuthErrorCodeUnverifiedEmail,
+
+  /** Indicates that the second factor is already enrolled.
+   */
+  FIRAuthInternalErrorCodeSecondFactorAlreadyEnrolled = FIRAuthPublicErrorCodeFlag |
+                                                        FIRAuthErrorCodeSecondFactorAlreadyEnrolled,
+
+  /** Indicates that the number of multi factors reached the limit.
+   */
+  FIRAuthInternalErrorCodeMaximumSecondFactorCountExceeded =
+      FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeMaximumSecondFactorCountExceeded,
+
+  /** Indicates that the first factor is not supportted.
+   */
+  FIRAuthInternalErrorCodeUnsupportedFirstFactor = FIRAuthPublicErrorCodeFlag |
+                                                   FIRAuthErrorCodeUnsupportedFirstFactor,
+
+  /** Indicates that the email needs to be verified before changed.
+   */
+  FIRAuthInternalErrorCodeEmailChangeNeedsVerification =
+      FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeEmailChangeNeedsVerification,
+
+  /** Indicates that the nonce is missing or invalid.
+   */
+  FIRAuthInternalErrorCodeMissingOrInvalidNonce = FIRAuthPublicErrorCodeFlag |
+                                                  FIRAuthErrorCodeMissingOrInvalidNonce,
+
+  /** Indicates that a non-null user was expected as an argmument to the operation but a null
+        user was provided.
+   */
+  FIRAuthInternalErrorCodeNullUser = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeNullUser,
+
+  /** Indicates that the provider id given for the web operation is invalid.
+   */
+  FIRAuthInternalErrorCodeInvalidProviderID = FIRAuthPublicErrorCodeFlag |
+                                              FIRAuthErrorCodeInvalidProviderID,
+
+  /** @var FIRAuthInternalErrorCodeTenantIDMismatch
+      @brief Indicates an error occurred when an attempt is made to update the current user with a
+          tenantId that differs from the current FirebaseAuth instance's tenantId.
+   */
+  FIRAuthInternalErrorCodeTenantIDMismatch = FIRAuthPublicErrorCodeFlag |
+                                             FIRAuthErrorCodeTenantIDMismatch,
+
+  /** @var FIRAuthInternalErrorCodeUnsupportedTenantOperation
+      @brief Indicates an error occurred when operation is not supported in a multi-tenant context.
+   */
+  FIRAuthInternalErrorCodeUnsupportedTenantOperation = FIRAuthPublicErrorCodeFlag |
+                                                       FIRAuthErrorCodeUnsupportedTenantOperation,
+
+  /** Indicates that the Firebase Dynamic Link domain used is either not configured or is
+     unauthorized for the current project.
+   */
+  FIRAuthInternalErrorCodeInvalidDynamicLinkDomain = FIRAuthPublicErrorCodeFlag |
+                                                     FIRAuthErrorCodeInvalidDynamicLinkDomain,
+
+  FIRAuthInternalErrorCodeMalformedJWT = FIRAuthPublicErrorCodeFlag | FIRAuthErrorCodeMalformedJWT,
+
+  /** @var FIRAuthInternalErrorCodeRPCRequestEncodingError
+      @brief Indicates an error encoding the RPC request.
+      @remarks This is typically due to some sort of unexpected input value.
+
+          See the @c NSUnderlyingError value in the @c NSError.userInfo dictionary for details.
+   */
+  FIRAuthInternalErrorCodeRPCRequestEncodingError = 1,
+
+  /** @var FIRAuthInternalErrorCodeJSONSerializationError
+      @brief Indicates an error serializing an RPC request.
+      @remarks This is typically due to some sort of unexpected input value.
+
+          If an @c NSJSONSerialization.isValidJSONObject: check fails, the error will contain no
+          @c NSUnderlyingError key in the @c NSError.userInfo dictionary. If an error was
+          encountered calling @c NSJSONSerialization.dataWithJSONObject:options:error:, the
+          resulting error will be associated with the @c NSUnderlyingError key in the
+          @c NSError.userInfo dictionary.
+   */
+  FIRAuthInternalErrorCodeJSONSerializationError = 2,
+
+  /** @var FIRAuthInternalErrorCodeUnexpectedErrorResponse
+      @brief Indicates an HTTP error occurred and the data returned either couldn't be deserialized
+          or couldn't be decoded.
+      @remarks See the @c NSUnderlyingError value in the @c NSError.userInfo dictionary for details
+          about the HTTP error which occurred.
+
+          If the response could be deserialized as JSON then the @c NSError.userInfo dictionary will
+          contain a value for the key @c FIRAuthErrorUserInfoDeserializedResponseKey which is the
+          deserialized response value.
+
+          If the response could not be deserialized as JSON then the @c NSError.userInfo dictionary
+          will contain values for the @c NSUnderlyingErrorKey and @c FIRAuthErrorUserInfoDataKey
+          keys.
+   */
+  FIRAuthInternalErrorCodeUnexpectedErrorResponse = 3,
+
+  /** @var FIRAuthInternalErrorCodeUnexpectedResponse
+      @brief Indicates the HTTP response indicated the request was a successes, but the response
+          contains something other than a JSON-encoded dictionary, or the data type of the response
+          indicated it is different from the type of response we expected.
+      @remarks See the @c NSUnderlyingError value in the @c NSError.userInfo dictionary.
+          If this key is present in the dictionary, it may contain an error from
+          @c NSJSONSerialization error (indicating the response received was of the wrong data
+              type).
+
+          See the @c FIRAuthErrorUserInfoDeserializedResponseKey value in the @c NSError.userInfo
+          dictionary. If the response could be deserialized, it's deserialized representation will
+          be associated with this key. If the @c NSUnderlyingError value in the @c NSError.userInfo
+          dictionary is @c nil, this indicates the JSON didn't represent a dictionary.
+   */
+  FIRAuthInternalErrorCodeUnexpectedResponse = 4,
+
+  /** @var FIRAuthInternalErrorCodeRPCResponseDecodingError
+      @brief Indicates an error decoding the RPC response.
+          This is typically due to some sort of unexpected response value from the server.
+      @remarks See the @c NSUnderlyingError value in the @c NSError.userInfo dictionary for details.
+
+          See the @c FIRErrorUserInfoDecodedResponseKey value in the @c NSError.userInfo dictionary.
+          The deserialized representation of the response will be associated with this key.
+   */
+  FIRAuthInternalErrorCodeRPCResponseDecodingError = 5,
+};
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h
new file mode 100644
index 0000000..9201305
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h	
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol FIRAuthUIDelegate;
+
+/** @typedef FIRAuthURLPresentationCompletion
+    @brief The type of block invoked when the URLPresentation completes.
+    @param callbackURL The callback URL if the presentation ends with a matching callback.
+    @param error The error if the presentation fails to start or ends with an error.
+ */
+typedef void (^FIRAuthURLPresentationCompletion)(NSURL *_Nullable callbackURL,
+                                                 NSError *_Nullable error);
+
+/** @typedef FIRAuthCallbackMatcher
+    @brief The type of block invoked for checking whether a callback URL matches.
+    @param callbackURL The callback URL to check for match.
+    @return Whether or not the specific callback URL matches or not.
+ */
+typedef BOOL (^FIRAuthURLCallbackMatcher)(NSURL *_Nullable callbackURL);
+
+/** @class FIRAuthURLPresenter
+    @brief A Class responsible for presenting URL via SFSafariViewController or WKWebView.
+ */
+@interface FIRAuthURLPresenter : NSObject
+
+/** @fn presentURL:UIDelegate:callbackMatcher:completion:
+    @brief Presents an URL to interact with user.
+    @param URL The URL to present.
+    @param UIDelegate The UI delegate to present view controller.
+    @param completion A block to be called either synchronously if the presentation fails to start,
+        or asynchronously in future on an unspecified thread once the presentation finishes.
+ */
+- (void)presentURL:(NSURL *)URL
+         UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+    callbackMatcher:(FIRAuthURLCallbackMatcher)callbackMatcher
+         completion:(FIRAuthURLPresentationCompletion)completion;
+
+/** @fn canHandleURL:
+    @brief Determines if a URL was produced by the currently presented URL.
+    @param URL The URL to handle.
+    @return Whether the URL could be handled or not.
+ */
+- (BOOL)canHandleURL:(NSURL *)URL;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.m
new file mode 100644
index 0000000..2defaf0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.m	
@@ -0,0 +1,208 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <SafariServices/SafariServices.h>
+#import "FirebaseAuth/Sources/Public/FirebaseAuth/FIRAuthUIDelegate.h"
+
+#import "FirebaseAuth/Sources/Auth/FIRAuthGlobalWorkQueue.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthDefaultUIDelegate.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthURLPresenter.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthURLPresenter () <SFSafariViewControllerDelegate, FIRAuthWebViewControllerDelegate>
+@end
+
+// Disable unguarded availability warnings because SFSafariViewController is been used throughout
+// the code, including as an iVar, which cannot be simply excluded by @available check.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
+
+@implementation FIRAuthURLPresenter {
+  /** @var _isPresenting
+      @brief Whether or not some web-based content is being presented.
+          Accesses to this property are serialized on the global Auth work queue
+          and thus this variable should not be read or written outside of the work queue.
+   */
+  BOOL _isPresenting;
+
+  /** @var _callbackMatcher
+      @brief The callback URL matcher for the current presentation, if one is active.
+   */
+  FIRAuthURLCallbackMatcher _Nullable _callbackMatcher;
+
+  /** @var _safariViewController
+      @brief The SFSafariViewController used for the current presentation, if any.
+   */
+  SFSafariViewController *_Nullable _safariViewController;
+
+  /** @var _webViewController
+      @brief The FIRAuthWebViewController used for the current presentation, if any.
+   */
+  FIRAuthWebViewController *_Nullable _webViewController;
+
+  /** @var _UIDelegate
+      @brief The UIDelegate used to present the SFSafariViewController.
+   */
+  id<FIRAuthUIDelegate> _UIDelegate;
+
+  /** @var _completion
+      @brief The completion handler for the current presentation, if one is active.
+          Accesses to this variable are serialized on the global Auth work queue
+          and thus this variable should not be read or written outside of the work queue.
+      @remarks This variable is also used as a flag to indicate a presentation is active.
+   */
+  FIRAuthURLPresentationCompletion _Nullable _completion;
+}
+
+- (void)presentURL:(NSURL *)URL
+         UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
+    callbackMatcher:(FIRAuthURLCallbackMatcher)callbackMatcher
+         completion:(FIRAuthURLPresentationCompletion)completion {
+  if (_isPresenting) {
+    // Unable to start a new presentation on top of another.
+    // Invoke the new completion closure and leave the old one as-is
+    // to be invoked when the presentation finishes.
+    dispatch_async(dispatch_get_main_queue(), ^() {
+      completion(nil, [FIRAuthErrorUtils webContextAlreadyPresentedErrorWithMessage:nil]);
+    });
+    return;
+  }
+  _isPresenting = YES;
+  _callbackMatcher = callbackMatcher;
+  _completion = [completion copy];
+  dispatch_async(dispatch_get_main_queue(), ^() {
+    self->_UIDelegate = UIDelegate ?: [FIRAuthDefaultUIDelegate defaultUIDelegate];
+#if TARGET_OS_MACCATALYST
+    self->_webViewController = [[FIRAuthWebViewController alloc] initWithURL:URL delegate:self];
+    UINavigationController *navController =
+        [[UINavigationController alloc] initWithRootViewController:self->_webViewController];
+    [self->_UIDelegate presentViewController:navController animated:YES completion:nil];
+#else
+    if ([SFSafariViewController class]) {
+      self->_safariViewController = [[SFSafariViewController alloc] initWithURL:URL];
+      self->_safariViewController.delegate = self;
+      [self->_UIDelegate presentViewController:self->_safariViewController
+                                      animated:YES
+                                    completion:nil];
+      return;
+    } else {
+      self->_webViewController = [[FIRAuthWebViewController alloc] initWithURL:URL delegate:self];
+      UINavigationController *navController =
+          [[UINavigationController alloc] initWithRootViewController:self->_webViewController];
+      [self->_UIDelegate presentViewController:navController animated:YES completion:nil];
+    }
+#endif
+  });
+}
+
+- (BOOL)canHandleURL:(NSURL *)URL {
+  if (_isPresenting && _callbackMatcher && _callbackMatcher(URL)) {
+    [self finishPresentationWithURL:URL error:nil];
+    return YES;
+  }
+  return NO;
+}
+
+#pragma mark - SFSafariViewControllerDelegate
+
+- (void)safariViewControllerDidFinish:(SFSafariViewController *)controller {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^() {
+    if (controller == self->_safariViewController) {
+      self->_safariViewController = nil;
+      // TODO:Ensure that the SFSafariViewController is actually removed from the screen before
+      // invoking finishPresentationWithURL:error:
+      [self finishPresentationWithURL:nil
+                                error:[FIRAuthErrorUtils webContextCancelledErrorWithMessage:nil]];
+    }
+  });
+}
+
+#pragma mark - FIRAuthwebViewControllerDelegate
+
+- (BOOL)webViewController:(FIRAuthWebViewController *)webViewController canHandleURL:(NSURL *)URL {
+  __block BOOL result = NO;
+  dispatch_sync(FIRAuthGlobalWorkQueue(), ^() {
+    if (webViewController == self->_webViewController) {
+      result = [self canHandleURL:URL];
+    }
+  });
+  return result;
+}
+
+- (void)webViewControllerDidCancel:(FIRAuthWebViewController *)webViewController {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^() {
+    if (webViewController == self->_webViewController) {
+      [self finishPresentationWithURL:nil
+                                error:[FIRAuthErrorUtils webContextCancelledErrorWithMessage:nil]];
+    }
+  });
+}
+
+- (void)webViewController:(FIRAuthWebViewController *)webViewController
+         didFailWithError:(NSError *)error {
+  dispatch_async(FIRAuthGlobalWorkQueue(), ^() {
+    if (webViewController == self->_webViewController) {
+      [self finishPresentationWithURL:nil error:error];
+    }
+  });
+}
+
+#pragma mark - Private methods
+
+/** @fn finishPresentationWithURL:error:
+    @brief Finishes the presentation for a given URL, if any.
+    @param URL The URL to finish presenting.
+    @param error The error with which to finish presenting, if any.
+ */
+- (void)finishPresentationWithURL:(nullable NSURL *)URL error:(nullable NSError *)error {
+  _callbackMatcher = nil;
+  id<FIRAuthUIDelegate> UIDelegate = _UIDelegate;
+  _UIDelegate = nil;
+  FIRAuthURLPresentationCompletion completion = [_completion copy];
+  _completion = NULL;
+  void (^finishBlock)(void) = ^() {
+    self->_isPresenting = NO;
+    completion(URL, error);
+  };
+  SFSafariViewController *safariViewController = _safariViewController;
+  _safariViewController = nil;
+  FIRAuthWebViewController *webViewController = _webViewController;
+  _webViewController = nil;
+  if (safariViewController || webViewController) {
+    dispatch_async(dispatch_get_main_queue(), ^() {
+      [UIDelegate dismissViewControllerAnimated:YES
+                                     completion:^() {
+                                       dispatch_async(FIRAuthGlobalWorkQueue(), finishBlock);
+                                     }];
+    });
+  } else {
+    finishBlock();
+  }
+}
+
+#pragma clang diagnostic pop  // ignored "-Wunguarded-availability"
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h
new file mode 100644
index 0000000..7a3d080
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRAuthRequestConfiguration;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRFetchAuthDomainCallback
+    @brief The callback invoked at the end of the flow to fetch the Auth domain.
+    @param authDomain The Auth domain.
+    @param error The error that occurred while fetching the auth domain, if any.
+ */
+typedef void (^FIRFetchAuthDomainCallback)(NSString *_Nullable authDomain,
+                                           NSError *_Nullable error);
+
+/** @class FIRAuthURLUtils
+    @brief A utility class used to facilitate the creation of auth related URLs.
+ */
+@interface FIRAuthWebUtils : NSObject
+
+/** @fn randomStringWithLength:
+    @brief Generates a random string of a specified length.
+ */
++ (NSString *)randomStringWithLength:(NSUInteger)length;
+
+/** @fn isCallbackSchemeRegisteredForCustomURLScheme:
+    @brief Checks whether or not the provided custom URL scheme has been registered by the app.
+    @param URLScheme The custom URL scheme to be checked against all custom URL schemes registered
+   by the app.
+    @return whether or not the provided custom URL scheme has been registered by the app.
+ */
++ (BOOL)isCallbackSchemeRegisteredForCustomURLScheme:(NSString *)URLScheme;
+
+/** @fn isExpectedCallbackURL:eventID:authType
+    @brief Parses a URL into all available query items.
+    @param URL The actual callback URL.
+    @param eventID The expected event ID.
+    @param authType The expected auth type.
+    @param callbackScheme The expected callback custom scheme.
+    @return Whether or not the actual callback URL matches the expected callback URL.
+ */
++ (BOOL)isExpectedCallbackURL:(nullable NSURL *)URL
+                      eventID:(NSString *)eventID
+                     authType:(NSString *)authType
+               callbackScheme:(NSString *)callbackScheme;
+
+/** @fn fetchAuthDomainWithCompletion:completion:
+    @brief Fetches the auth domain associated with the Firebase Project.
+    @param completion The callback invoked after the auth domain has been constructed or an error
+        has been encountered.
+ */
++ (void)fetchAuthDomainWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                     completion:(FIRFetchAuthDomainCallback)completion;
+
+/** @fn queryItemValue:from:
+ @brief Utility function to get a value from a NSURLQueryItem array.
+ @param name The key.
+ @param queryList The NSURLQueryItem array.
+ @return The value for the key.
+ */
+
++ (nullable NSString *)queryItemValue:(NSString *)name from:(NSArray<NSURLQueryItem *> *)queryList;
+
+/** @fn dictionaryWithHttpArgumentsString:
+    @brief Utility function to get a dictionary from a http argument string.
+    @param argString The http argument string.
+    @return The resulting dictionary of query arguments.
+ */
++ (NSDictionary *)dictionaryWithHttpArgumentsString:(NSString *)argString;
+
+/** @fn stringByUnescapingFromURLArgument:from:
+    @brief Utility function to get a string by unescapting URL arguments.
+    @param argument The argument string.
+    @return The resulting string after unescaping URL argument.
+ */
++ (NSString *)stringByUnescapingFromURLArgument:(NSString *)argument;
+
+/** @fn parseURL:
+    @brief Parses an incoming URL into all available query items.
+    @param urlString The url to be parsed.
+    @return A dictionary of available query items in the target URL.
+ */
++ (NSDictionary<NSString *, NSString *> *)parseURL:(NSString *)urlString;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.m
new file mode 100644
index 0000000..d3029c0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.m	
@@ -0,0 +1,211 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebUtils.h"
+
+#import "FirebaseAuth/Sources/Backend/FIRAuthBackend.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigRequest.h"
+#import "FirebaseAuth/Sources/Backend/RPC/FIRGetProjectConfigResponse.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthErrorUtils.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthWebUtils
+
++ (NSArray<NSString *> *)supportedAuthDomains {
+  return @[ @"firebaseapp.com", @"web.app" ];
+}
+
++ (NSString *)randomStringWithLength:(NSUInteger)length {
+  NSMutableString *randomString = [[NSMutableString alloc] init];
+  for (int i = 0; i < length; i++) {
+    [randomString
+        appendString:[NSString stringWithFormat:@"%c", 'a' + arc4random_uniform('z' - 'a' + 1)]];
+  }
+  return randomString;
+}
+
++ (BOOL)isCallbackSchemeRegisteredForCustomURLScheme:(NSString *)URLScheme {
+  NSString *expectedCustomScheme = [URLScheme lowercaseString];
+  NSArray *urlTypes = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleURLTypes"];
+  for (NSDictionary *urlType in urlTypes) {
+    NSArray *urlTypeSchemes = urlType[@"CFBundleURLSchemes"];
+    for (NSString *urlTypeScheme in urlTypeSchemes) {
+      if ([urlTypeScheme.lowercaseString isEqualToString:expectedCustomScheme]) {
+        return YES;
+      }
+    }
+  }
+  return NO;
+}
+
++ (BOOL)isExpectedCallbackURL:(nullable NSURL *)URL
+                      eventID:(NSString *)eventID
+                     authType:(NSString *)authType
+               callbackScheme:(NSString *)callbackScheme {
+  if (!URL) {
+    return NO;
+  }
+  NSURLComponents *actualURLComponents = [NSURLComponents componentsWithURL:URL
+                                                    resolvingAgainstBaseURL:NO];
+  actualURLComponents.query = nil;
+  actualURLComponents.fragment = nil;
+
+  NSURLComponents *expectedURLComponents = [[NSURLComponents alloc] init];
+  expectedURLComponents.scheme = callbackScheme;
+  expectedURLComponents.host = @"firebaseauth";
+  expectedURLComponents.path = @"/link";
+
+  if (![expectedURLComponents.URL isEqual:actualURLComponents.URL]) {
+    return NO;
+  }
+  NSDictionary<NSString *, NSString *> *URLQueryItems =
+      [self dictionaryWithHttpArgumentsString:URL.query];
+  NSURL *deeplinkURL = [NSURL URLWithString:URLQueryItems[@"deep_link_id"]];
+  NSDictionary<NSString *, NSString *> *deeplinkQueryItems =
+      [self dictionaryWithHttpArgumentsString:deeplinkURL.query];
+  if ([deeplinkQueryItems[@"authType"] isEqualToString:authType] &&
+      [deeplinkQueryItems[@"eventId"] isEqualToString:eventID]) {
+    return YES;
+  }
+  return NO;
+}
+
++ (void)fetchAuthDomainWithRequestConfiguration:(FIRAuthRequestConfiguration *)requestConfiguration
+                                     completion:(FIRFetchAuthDomainCallback)completion {
+  if (requestConfiguration.emulatorHostAndPort) {
+    // If we are using the auth emulator, we do not want to call the GetProjectConfig endpoint. The
+    // widget is hosted on the emulator host and port, so we can return that directly.
+    completion(requestConfiguration.emulatorHostAndPort, nil);
+    return;
+  }
+  FIRGetProjectConfigRequest *request =
+      [[FIRGetProjectConfigRequest alloc] initWithRequestConfiguration:requestConfiguration];
+
+  [FIRAuthBackend
+      getProjectConfig:request
+              callback:^(FIRGetProjectConfigResponse *_Nullable response,
+                         NSError *_Nullable error) {
+                if (error) {
+                  completion(nil, error);
+                  return;
+                }
+                // Look up an authorized domain ends with one of the supportedAuthDomains.
+                // The sequence of supportedAuthDomains matters. ("firebaseapp.com", "web.app")
+                // The searching ends once the first valid suportedAuthDomain is found.
+                NSString *authDomain;
+                for (NSString *domain in response.authorizedDomains) {
+                  for (NSString *suportedAuthDomain in [self supportedAuthDomains]) {
+                    NSInteger index = domain.length - suportedAuthDomain.length;
+                    if (index >= 2) {
+                      if ([domain hasSuffix:suportedAuthDomain] &&
+                          domain.length >= suportedAuthDomain.length + 2) {
+                        authDomain = domain;
+                        break;
+                      }
+                    }
+                  }
+                  if (authDomain != nil) {
+                    break;
+                  }
+                }
+                if (!authDomain.length) {
+                  completion(nil, [FIRAuthErrorUtils
+                                      unexpectedErrorResponseWithDeserializedResponse:response]);
+                  return;
+                }
+                completion(authDomain, nil);
+              }];
+}
+
+/** @fn queryItemValue:from:
+ @brief Utility function to get a value from a NSURLQueryItem array.
+ @param name The key.
+ @param queryList The NSURLQueryItem array.
+ @return The value for the key.
+ */
++ (nullable NSString *)queryItemValue:(NSString *)name from:(NSArray<NSURLQueryItem *> *)queryList {
+  for (NSURLQueryItem *item in queryList) {
+    if ([item.name isEqualToString:name]) {
+      return item.value;
+    }
+  }
+  return nil;
+}
+
++ (NSDictionary *)dictionaryWithHttpArgumentsString:(NSString *)argString {
+  NSMutableDictionary *ret = [NSMutableDictionary dictionary];
+  NSArray *components = [argString componentsSeparatedByString:@"&"];
+  NSString *component;
+  // Use reverse order so that the first occurrence of a key replaces
+  // those subsequent.
+  for (component in [components reverseObjectEnumerator]) {
+    if (component.length == 0) continue;
+    NSRange pos = [component rangeOfString:@"="];
+    NSString *key;
+    NSString *val;
+    if (pos.location == NSNotFound) {
+      key = [self stringByUnescapingFromURLArgument:component];
+      val = @"";
+    } else {
+      key = [self stringByUnescapingFromURLArgument:[component substringToIndex:pos.location]];
+      val = [self stringByUnescapingFromURLArgument:[component substringFromIndex:pos.location +
+                                                                                  pos.length]];
+    }
+    // returns nil on invalid UTF8 and NSMutableDictionary raises an exception when passed nil
+    // values.
+    if (!key) key = @"";
+    if (!val) val = @"";
+    [ret setObject:val forKey:key];
+  }
+  return ret;
+}
+
++ (NSString *)stringByUnescapingFromURLArgument:(NSString *)argument {
+  NSMutableString *resultString = [NSMutableString stringWithString:argument];
+  [resultString replaceOccurrencesOfString:@"+"
+                                withString:@" "
+                                   options:NSLiteralSearch
+                                     range:NSMakeRange(0, [resultString length])];
+  return [resultString stringByRemovingPercentEncoding];
+}
+
++ (NSDictionary<NSString *, NSString *> *)parseURL:(NSString *)urlString {
+  NSString *linkURL = [NSURLComponents componentsWithString:urlString].query;
+  if (!linkURL) {
+    return @{};
+  }
+  NSArray<NSString *> *URLComponents = [linkURL componentsSeparatedByString:@"&"];
+  NSMutableDictionary<NSString *, NSString *> *queryItems =
+      [[NSMutableDictionary alloc] initWithCapacity:URLComponents.count];
+  for (NSString *component in URLComponents) {
+    NSRange equalRange = [component rangeOfString:@"="];
+    if (equalRange.location != NSNotFound) {
+      NSString *queryItemKey =
+          [[component substringToIndex:equalRange.location] stringByRemovingPercentEncoding];
+      NSString *queryItemValue =
+          [[component substringFromIndex:equalRange.location + 1] stringByRemovingPercentEncoding];
+      if (queryItemKey && queryItemValue) {
+        queryItems[queryItemKey] = queryItemValue;
+      }
+    }
+  }
+  return queryItems;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.h
new file mode 100644
index 0000000..1a837c2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <UIKit/UIKit.h>
+#import <WebKit/WebKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @class FIRAuthWebView
+    @brief A class reponsible for creating a WKWebView for use within Firebase Auth.
+ */
+@interface FIRAuthWebView : UIView
+
+/** @property webView
+ *  @brief The web view.
+ */
+@property(nonatomic, weak) WKWebView *webView;
+
+/** @property spinner
+ *  @brief The spinner that indicates web view loading.
+ */
+@property(nonatomic, weak) UIActivityIndicatorView *spinner;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.m
new file mode 100644
index 0000000..2ea8df8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebView.m	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebView.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRAuthWebView
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (self) {
+    self.backgroundColor = [UIColor whiteColor];
+    [self initializeSubviews];
+  }
+  return self;
+}
+
+/** @fn initializeSubviews
+    @brief Initializes the subviews of this view.
+ */
+- (void)initializeSubviews {
+  WKWebView *webView = [self createWebView];
+  UIActivityIndicatorView *spinner = [self createSpinner];
+
+  // The order of the following controls z-order.
+  [self addSubview:webView];
+  [self addSubview:spinner];
+
+  [self layoutSubviews];
+  _webView = webView;
+  _spinner = spinner;
+}
+
+- (void)layoutSubviews {
+  CGFloat height = self.bounds.size.height;
+  CGFloat width = self.bounds.size.width;
+  _webView.frame = CGRectMake(0, 0, width, height);
+  _spinner.center = _webView.center;
+}
+
+/** @fn createWebView
+    @brief Creates a web view to be used by this view.
+    @return The newly created web view.
+ */
+- (WKWebView *)createWebView {
+  WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectZero];
+  // Trickery to make the web view not do weird things (like showing a black background when
+  // the prompt in the navigation bar animates changes.)
+  webView.opaque = NO;
+  webView.backgroundColor = [UIColor clearColor];
+  webView.scrollView.opaque = NO;
+  webView.scrollView.backgroundColor = [UIColor clearColor];
+  webView.scrollView.bounces = NO;
+  webView.scrollView.alwaysBounceVertical = NO;
+  webView.scrollView.alwaysBounceHorizontal = NO;
+  return webView;
+}
+
+/** @fn createSpinner
+    @brief Creates a spinner to be used by this view.
+    @return The newly created spinner.
+ */
+- (UIActivityIndicatorView *)createSpinner {
+  UIActivityIndicatorViewStyle spinnerStyle;
+#if defined(TARGET_OS_MACCATALYST)
+  if (@available(iOS 13.0, *)) {
+    spinnerStyle = UIActivityIndicatorViewStyleMedium;
+  } else {
+// iOS 13 deprecation
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    spinnerStyle = UIActivityIndicatorViewStyleGray;
+#pragma clang diagnostic pop
+  }
+#else
+  spinnerStyle = UIActivityIndicatorViewStyleGray;
+#endif
+  UIActivityIndicatorView *spinner =
+      [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:spinnerStyle];
+  return spinner;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.h
new file mode 100644
index 0000000..2f01ed2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.h	
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import <UIKit/UIKit.h>
+
+@class FIRAuthWebViewController;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @protocol FIRAuthWebViewControllerDelegate
+    @brief Defines a delegate for FIRAuthWebViewController
+ */
+@protocol FIRAuthWebViewControllerDelegate <NSObject>
+
+/** @fn webViewController:canHandleURL:
+    @brief Determines if a URL should be handled by the delegate.
+    @param URL The URL to handle.
+    @return Whether the URL could be handled or not.
+ */
+- (BOOL)webViewController:(FIRAuthWebViewController *)webViewController canHandleURL:(NSURL *)URL;
+
+/** @fn webViewControllerDidCancel:
+    @brief Notifies the delegate that the web view controller is being cancelled by the user.
+    @param webViewController The web view controller in question.
+ */
+- (void)webViewControllerDidCancel:(FIRAuthWebViewController *)webViewController;
+
+/** @fn webViewController:didFailWithError:
+    @brief Notifies the delegate that the web view controller failed to load a page.
+    @param webViewController The web view controller in question.
+    @param error The error that has occurred.
+ */
+- (void)webViewController:(FIRAuthWebViewController *)webViewController
+         didFailWithError:(NSError *)error;
+
+@end
+
+/** @class FIRAuthWebViewController
+    @brief Reponsible for creating a UIViewController for presenting a FIRAutWebView.
+ */
+@interface FIRAuthWebViewController : UIViewController
+
+/** @fn initWithNibName:bundle:
+ *  @brief Please call initWithURL:delegate:
+ */
+- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil
+                         bundle:(nullable NSBundle *)nibBundleOrNil NS_UNAVAILABLE;
+
+/** @fn initWithCoder:
+ *  @brief Please call initWithURL:delegate:
+ */
+- (instancetype)initWithCoder:(NSCoder *)aDecoder NS_UNAVAILABLE;
+
+- (instancetype)initWithURL:(NSURL *)URL
+                   delegate:(__weak id<FIRAuthWebViewControllerDelegate>)delegate
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.m
new file mode 100644
index 0000000..acedd12
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.m	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IOS
+
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebView.h"
+#import "FirebaseAuth/Sources/Utilities/FIRAuthWebViewController.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRAuthWebViewController () <WKNavigationDelegate>
+@end
+
+@implementation FIRAuthWebViewController {
+  /** @var _URL
+      @brief The initial URL to display.
+   */
+  NSURL *_URL;
+
+  /** @var _delegate
+      @brief The delegate to call.
+   */
+  __weak id<FIRAuthWebViewControllerDelegate> _delegate;
+
+  /** @var _webView;
+      @brief The web view instance for easier access.
+   */
+  __weak FIRAuthWebView *_webView;
+}
+
+- (instancetype)initWithURL:(NSURL *)URL
+                   delegate:(__weak id<FIRAuthWebViewControllerDelegate>)delegate {
+  self = [super initWithNibName:nil bundle:nil];
+  if (self) {
+    _URL = URL;
+    _delegate = delegate;
+  }
+  return self;
+}
+
+#pragma mark - Lifecycle
+
+- (void)loadView {
+  FIRAuthWebView *webView = [[FIRAuthWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];
+  webView.webView.navigationDelegate = self;
+  self.view = webView;
+  _webView = webView;
+  self.navigationItem.leftBarButtonItem =
+      [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
+                                                    target:self
+                                                    action:@selector(cancel)];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+  [super viewDidAppear:animated];
+
+  // Loads the requested URL in the web view.
+  [_webView.webView loadRequest:[NSURLRequest requestWithURL:_URL]];
+}
+
+#pragma mark - UI Targets
+
+- (void)cancel {
+  [_delegate webViewControllerDidCancel:self];
+}
+
+#pragma mark - WKNavigationDelegate
+
+- (void)webView:(WKWebView *)webView
+    decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction
+                    decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
+  [_delegate webViewController:self canHandleURL:navigationAction.request.URL];
+  decisionHandler(WKNavigationActionPolicyAllow);
+}
+
+- (void)webView:(WKWebView *)webView
+    didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation {
+  _webView.spinner.hidden = NO;
+  [_webView.spinner startAnimating];
+}
+
+- (void)webView:(WKWebView *)webView
+    didFinishNavigation:(null_unspecified WKNavigation *)navigation {
+  _webView.spinner.hidden = YES;
+  [_webView.spinner stopAnimating];
+}
+
+- (void)webView:(WKWebView *)webView
+    didFailNavigation:(null_unspecified WKNavigation *)navigation
+            withError:(NSError *)error {
+  if ([error.domain isEqualToString:NSURLErrorDomain] && error.code == NSURLErrorCancelled) {
+    // It's okay for the page to be redirected before it is completely loaded.  See b/32028062 .
+    return;
+  }
+  // Forward notification to our delegate.
+  [self webView:webView didFinishNavigation:navigation];
+  [_delegate webViewController:self didFailWithError:error];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.h
new file mode 100644
index 0000000..114cbfd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface NSData (FIRBase64)
+
+/** @fn fir_base64URLEncodedStringWithOptions:
+    @brief Get a web safe base64 encoded string
+    @param options The base64 encoding options
+ */
+- (NSString *)fir_base64URLEncodedStringWithOptions:(NSDataBase64EncodingOptions)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.m b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.m
new file mode 100644
index 0000000..0afc53b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseAuth/Sources/Utilities/NSData+FIRBase64.m	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseAuth/Sources/Utilities/NSData+FIRBase64.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation NSData (FIRBase64)
+
+- (NSString *)fir_base64URLEncodedStringWithOptions:(NSDataBase64EncodingOptions)options {
+  NSString *string = [self base64EncodedStringWithOptions:options];
+  string = [string stringByReplacingOccurrencesOfString:@"/" withString:@"_"];
+  string = [string stringByReplacingOccurrencesOfString:@"+" withString:@"-"];
+  string = [string stringByReplacingOccurrencesOfString:@"=" withString:@""];
+  return string;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRAppInternal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRAppInternal.h
new file mode 100644
index 0000000..6c7d723
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRAppInternal.h	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIRApp.h>
+
+@class FIRComponentContainer;
+@protocol FIRLibrary;
+
+/**
+ * The internal interface to FIRApp. This is meant for first-party integrators, who need to receive
+ * FIRApp notifications, log info about the success or failure of their configuration, and access
+ * other internal functionality of FIRApp.
+ *
+ * TODO(b/28296561): Restructure this header.
+ */
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSInteger, FIRConfigType) {
+  FIRConfigTypeCore = 1,
+  FIRConfigTypeSDK = 2,
+};
+
+extern NSString *const kFIRDefaultAppName;
+extern NSString *const kFIRAppReadyToConfigureSDKNotification;
+extern NSString *const kFIRAppDeleteNotification;
+extern NSString *const kFIRAppIsDefaultAppKey;
+extern NSString *const kFIRAppNameKey;
+extern NSString *const kFIRGoogleAppIDKey;
+extern NSString *const kFirebaseCoreErrorDomain;
+
+/** The NSUserDefaults suite name for FirebaseCore, for those storage locations that use it. */
+extern NSString *const kFirebaseCoreDefaultsSuiteName;
+
+/**
+ * The format string for the User Defaults key used for storing the data collection enabled flag.
+ * This includes formatting to append the Firebase App's name.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat;
+
+/**
+ * The plist key used for storing the data collection enabled flag.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledPlistKey;
+
+/** @var FIRAuthStateDidChangeInternalNotification
+ @brief The name of the @c NSNotificationCenter notification which is posted when the auth state
+ changes (e.g. a new token has been produced, a user logs in or out). The object parameter of
+ the notification is a dictionary possibly containing the key:
+ @c FIRAuthStateDidChangeInternalNotificationTokenKey (the new access token.) If it does not
+ contain this key it indicates a sign-out event took place.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotification;
+
+/** @var FIRAuthStateDidChangeInternalNotificationTokenKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new access token.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationTokenKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationAppKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the FIRApp associated with the auth instance.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationAppKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationUIDKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new user's UID (or nil if there is no longer a user signed in).
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationUIDKey;
+
+@interface FIRApp ()
+
+/**
+ * A flag indicating if this is the default app (has the default app name).
+ */
+@property(nonatomic, readonly) BOOL isDefaultApp;
+
+/*
+ * The container of interop SDKs for this app.
+ */
+@property(nonatomic) FIRComponentContainer *container;
+
+/**
+ * Checks if the default app is configured without trying to configure it.
+ */
++ (BOOL)isDefaultAppConfigured;
+
+/**
+ * Registers a given third-party library with the given version number to be reported for
+ * analytics.
+ *
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerLibrary:(nonnull NSString *)name withVersion:(nonnull NSString *)version;
+
+/**
+ * Registers a given internal library to be reported for analytics.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name;
+
+/**
+ * Registers a given internal library with the given version number to be reported for
+ * analytics. This should only be used for non-Firebase libraries that have their own versioning
+ * scheme.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name
+                    withVersion:(nonnull NSString *)version;
+
+/**
+ * A concatenated string representing all the third-party libraries and version numbers.
+ */
++ (NSString *)firebaseUserAgent;
+
+/**
+ * Can be used by the unit tests in eack SDK to reset FIRApp. This method is thread unsafe.
+ */
++ (void)resetApps;
+
+/**
+ * Can be used by the unit tests in each SDK to set customized options.
+ */
+- (instancetype)initInstanceWithName:(NSString *)name options:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponent.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponent.h
new file mode 100644
index 0000000..cb51ee7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponent.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provides a system to clean up cached instances returned from the component system.
+NS_SWIFT_NAME(ComponentLifecycleMaintainer)
+@protocol FIRComponentLifecycleMaintainer
+/// The associated app will be deleted, clean up any resources as they are about to be deallocated.
+- (void)appWillBeDeleted:(FIRApp *)app;
+@end
+
+typedef _Nullable id (^FIRComponentCreationBlock)(FIRComponentContainer *container,
+                                                  BOOL *isCacheable)
+    NS_SWIFT_NAME(ComponentCreationBlock);
+
+@class FIRDependency;
+
+/// Describes the timing of instantiation. Note: new components should default to lazy unless there
+/// is a strong reason to be eager.
+typedef NS_ENUM(NSInteger, FIRInstantiationTiming) {
+  FIRInstantiationTimingLazy,
+  FIRInstantiationTimingAlwaysEager,
+  FIRInstantiationTimingEagerInDefaultApp
+} NS_SWIFT_NAME(InstantiationTiming);
+
+/// A component that can be used from other Firebase SDKs.
+NS_SWIFT_NAME(Component)
+@interface FIRComponent : NSObject
+
+/// The protocol describing functionality provided from the Component.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// The timing of instantiation.
+@property(nonatomic, readonly) FIRInstantiationTiming instantiationTiming;
+
+/// An array of dependencies for the component.
+@property(nonatomic, copy, readonly) NSArray<FIRDependency *> *dependencies;
+
+/// A block to instantiate an instance of the component with the appropriate dependencies.
+@property(nonatomic, copy, readonly) FIRComponentCreationBlock creationBlock;
+
+// There's an issue with long NS_SWIFT_NAMES that causes compilation to fail, disable clang-format
+// for the next two methods.
+// clang-format off
+
+/// Creates a component with no dependencies that will be lazily initialized.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:creationBlock:));
+
+/// Creates a component to be registered with the component container.
+///
+/// @param protocol - The protocol describing functionality provided by the component.
+/// @param instantiationTiming - When the component should be initialized. Use .lazy unless there's
+///                              a good reason to be instantiated earlier.
+/// @param dependencies - Any dependencies the `implementingClass` has, optional or required.
+/// @param creationBlock - A block to instantiate the component with a container, and if
+/// @return A component that can be registered with the component container.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                  instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                         dependencies:(NSArray<FIRDependency *> *)dependencies
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:instantiationTiming:dependencies:creationBlock:));
+
+// clang-format on
+
+/// Unavailable.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentContainer.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentContainer.h
new file mode 100644
index 0000000..af18a93
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentContainer.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A type-safe macro to retrieve a component from a container. This should be used to retrieve
+/// components instead of using the container directly.
+#define FIR_COMPONENT(type, container) \
+  [FIRComponentType<id<type>> instanceForProtocol:@protocol(type) inContainer:container]
+
+@class FIRApp;
+
+/// A container that holds different components that are registered via the
+/// `registerAsComponentRegistrant:` call. These classes should conform to `FIRComponentRegistrant`
+/// in order to properly register components for Core.
+NS_SWIFT_NAME(FirebaseComponentContainer)
+@interface FIRComponentContainer : NSObject
+
+/// A weak reference to the app that an instance of the container belongs to.
+@property(nonatomic, weak, readonly) FIRApp *app;
+
+/// Unavailable. Use the `container` property on `FIRApp`.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentType.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentType.h
new file mode 100644
index 0000000..6f2aca7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRComponentType.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Do not use directly. A placeholder type in order to provide a macro that will warn users of
+/// mis-matched protocols.
+NS_SWIFT_NAME(ComponentType)
+@interface FIRComponentType<__covariant T> : NSObject
+
+/// Do not use directly. A factory method to retrieve an instance that provides a specific
+/// functionality.
++ (T)instanceForProtocol:(Protocol *)protocol inContainer:(FIRComponentContainer *)container;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h
new file mode 100644
index 0000000..76c0c05
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRDiagnosticsData;
+@class FIROptions;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Connects FIRCore with the CoreDiagnostics library. */
+@interface FIRCoreDiagnosticsConnector : NSObject
+
+/** Logs FirebaseCore  related data.
+ *
+ * @param options The options object containing data to log.
+ */
++ (void)logCoreTelemetryWithOptions:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRDependency.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRDependency.h
new file mode 100644
index 0000000..46e9b7e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRDependency.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A dependency on a specific protocol's functionality.
+NS_SWIFT_NAME(Dependency)
+@interface FIRDependency : NSObject
+
+/// The protocol describing functionality being depended on.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// A flag to specify if the dependency is required or not.
+@property(nonatomic, readonly) BOOL isRequired;
+
+/// Initializes a dependency that is required. Calls `initWithProtocol:isRequired` with `YES` for
+/// the required parameter.
+/// Creates a required dependency on the specified protocol's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol;
+
+/// Creates a dependency on the specified protocol's functionality and specify if it's required for
+/// the class's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol isRequired:(BOOL)required;
+
+/// Use `dependencyWithProtocol:isRequired:` instead.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h
new file mode 100644
index 0000000..9f94256
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h	
@@ -0,0 +1,39 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRHeartbeatInfo : NSObject
+
+// Enum representing the different heartbeat codes.
+typedef NS_ENUM(NSInteger, FIRHeartbeatInfoCode) {
+  FIRHeartbeatInfoCodeNone = 0,
+  FIRHeartbeatInfoCodeSDK = 1,
+  FIRHeartbeatInfoCodeGlobal = 2,
+  FIRHeartbeatInfoCodeCombined = 3,
+};
+
+/**
+ * Get heartbeat code required for the sdk.
+ * @param heartbeatTag String representing the sdk heartbeat tag.
+ * @return Heartbeat code indicating whether or not an sdk/global heartbeat
+ * needs to be sent
+ */
++ (FIRHeartbeatInfoCode)heartbeatCodeForTag:(NSString *)heartbeatTag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLibrary.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLibrary.h
new file mode 100644
index 0000000..9575e94
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLibrary.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRLibrary_h
+#define FIRLibrary_h
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provide an interface to register a library for userAgent logging and availability to others.
+NS_SWIFT_NAME(Library)
+@protocol FIRLibrary
+
+/// Returns one or more FIRComponents that will be registered in
+/// FIRApp and participate in dependency resolution and injection.
++ (NSArray<FIRComponent *> *)componentsToRegister;
+
+@optional
+/// Implement this method if the library needs notifications for lifecycle events. This method is
+/// called when the developer calls `FirebaseApp.configure()`.
++ (void)configureWithApp:(FIRApp *)app;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* FIRLibrary_h */
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLogger.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLogger.h
new file mode 100644
index 0000000..b6242ff
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIRLogger.h	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <FirebaseCore/FIRLoggerLevel.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * The Firebase services used in Firebase logger.
+ */
+typedef NSString *const FIRLoggerService;
+
+extern FIRLoggerService kFIRLoggerAnalytics;
+extern FIRLoggerService kFIRLoggerCrash;
+extern FIRLoggerService kFIRLoggerCore;
+extern FIRLoggerService kFIRLoggerRemoteConfig;
+
+/**
+ * The key used to store the logger's error count.
+ */
+extern NSString *const kFIRLoggerErrorCountKey;
+
+/**
+ * The key used to store the logger's warning count.
+ */
+extern NSString *const kFIRLoggerWarningCountKey;
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+/**
+ * Enables or disables Analytics debug mode.
+ * If set to YES, the logging level for Analytics will be set to FIRLoggerLevelDebug.
+ * Enabling the debug mode has no effect if the app is running from App Store.
+ * (required) analytics debug mode flag.
+ */
+void FIRSetAnalyticsDebugMode(BOOL analyticsDebugMode);
+
+/**
+ * Changes the default logging level of FIRLoggerLevelNotice to a user-specified level.
+ * The default level cannot be set above FIRLoggerLevelNotice if the app is running from App Store.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ */
+void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel);
+
+/**
+ * Checks if the specified logger level is loggable given the current settings.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) whether or not this function is called from the Analytics component.
+ */
+BOOL FIRIsLoggableLevel(FIRLoggerLevel loggerLevel, BOOL analyticsComponent);
+
+/**
+ * Logs a message to the Xcode console and the device log. If running from AppStore, will
+ * not log any messages with a level higher than FIRLoggerLevelNotice to avoid log spamming.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+extern void FIRLogBasic(FIRLoggerLevel level,
+                        FIRLoggerService service,
+                        NSString *messageCode,
+                        NSString *message,
+// On 64-bit simulators, va_list is not a pointer, so cannot be marked nullable
+// See: http://stackoverflow.com/q/29095469
+#if __LP64__ && TARGET_OS_SIMULATOR || TARGET_OS_OSX
+                        va_list args_ptr
+#else
+                        va_list _Nullable args_ptr
+#endif
+);
+
+/**
+ * The following functions accept the following parameters in order:
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting from "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ *            See go/firebase-log-proposal for details.
+ * (required) message string which can be a format string.
+ * (optional) the list of arguments to substitute into the format string.
+ * Example usage:
+ * FIRLogError(kFIRLoggerCore, @"I-COR000001", @"Configuration of %@ failed.", app.name);
+ */
+extern void FIRLogError(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogWarning(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogNotice(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogInfo(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogDebug(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+@interface FIRLoggerWrapper : NSObject
+
+/**
+ * Objective-C wrapper for FIRLogBasic to allow weak linking to FIRLogger
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+
++ (void)logWithLevel:(FIRLoggerLevel)level
+         withService:(FIRLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIROptionsInternal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIROptionsInternal.h
new file mode 100644
index 0000000..8efc5fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FIROptionsInternal.h	
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIROptions.h>
+
+/**
+ * Keys for the strings in the plist file.
+ */
+extern NSString *const kFIRAPIKey;
+extern NSString *const kFIRTrackingID;
+extern NSString *const kFIRGoogleAppID;
+extern NSString *const kFIRClientID;
+extern NSString *const kFIRGCMSenderID;
+extern NSString *const kFIRAndroidClientID;
+extern NSString *const kFIRDatabaseURL;
+extern NSString *const kFIRStorageBucket;
+extern NSString *const kFIRBundleID;
+extern NSString *const kFIRProjectID;
+
+/**
+ * Keys for the plist file name
+ */
+extern NSString *const kServiceInfoFileName;
+
+extern NSString *const kServiceInfoFileType;
+
+/**
+ * This header file exposes the initialization of FIROptions to internal use.
+ */
+@interface FIROptions ()
+
+/**
+ * resetDefaultOptions and initInternalWithOptionsDictionary: are exposed only for unit tests.
+ */
++ (void)resetDefaultOptions;
+
+/**
+ * Initializes the options with dictionary. The above strings are the keys of the dictionary.
+ * This is the designated initializer.
+ */
+- (instancetype)initInternalWithOptionsDictionary:(NSDictionary *)serviceInfoDictionary
+    NS_DESIGNATED_INITIALIZER;
+
+/**
+ * defaultOptions and defaultOptionsDictionary are exposed in order to be used in FIRApp and
+ * other first party services.
+ */
++ (FIROptions *)defaultOptions;
+
++ (NSDictionary *)defaultOptionsDictionary;
+
+/**
+ * Indicates whether or not Analytics collection was explicitly enabled via a plist flag or at
+ * runtime.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionExplicitlySet;
+
+/**
+ * Whether or not Analytics Collection was enabled. Analytics Collection is enabled unless
+ * explicitly disabled in GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionEnabled;
+
+/**
+ * Whether or not Analytics Collection was completely disabled. If YES, then
+ * isAnalyticsCollectionEnabled will be NO.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionDeactivated;
+
+/**
+ * The version ID of the client library, e.g. @"1100000".
+ */
+@property(nonatomic, readonly, copy) NSString *libraryVersionID;
+
+/**
+ * The flag indicating whether this object was constructed with the values in the default plist
+ * file.
+ */
+@property(nonatomic) BOOL usingOptionsFromDefaultPlist;
+
+/**
+ * Whether or not Measurement was enabled. Measurement is enabled unless explicitly disabled in
+ * GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isMeasurementEnabled;
+
+/**
+ * Whether or not Analytics was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsEnabled;
+
+/**
+ * Whether or not SignIn was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isSignInEnabled;
+
+/**
+ * Whether or not editing is locked. This should occur after FIROptions has been set on a FIRApp.
+ */
+@property(nonatomic, getter=isEditingLocked) BOOL editingLocked;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FirebaseCoreInternal.h b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FirebaseCoreInternal.h
new file mode 100644
index 0000000..88d012b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/FirebaseCore/Sources/Private/FirebaseCoreInternal.h	
@@ -0,0 +1,28 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// An umbrella header, for any other libraries in this repo to access Firebase Public and Private
+// headers. Any package manager complexity should be handled here.
+
+#import <FirebaseCore/FirebaseCore.h>
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRComponent.h"
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+#import "FirebaseCore/Sources/Private/FIRComponentType.h"
+#import "FirebaseCore/Sources/Private/FIRDependency.h"
+#import "FirebaseCore/Sources/Private/FIRHeartbeatInfo.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
diff --git a/ChattingApp 000/Pods/FirebaseAuth/Interop/Auth/Public/FIRAuthInterop.h b/ChattingApp 000/Pods/FirebaseAuth/Interop/Auth/Public/FIRAuthInterop.h
new file mode 100644
index 0000000..a33da7c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/Interop/Auth/Public/FIRAuthInterop.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRAuthInterop_h
+#define FIRAuthInterop_h
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRTokenCallback
+ @brief The type of block which gets called when a token is ready.
+ */
+typedef void (^FIRTokenCallback)(NSString *_Nullable token, NSError *_Nullable error)
+    NS_SWIFT_NAME(TokenCallback);
+
+/// Common methods for Auth interoperability.
+NS_SWIFT_NAME(AuthInterop)
+@protocol FIRAuthInterop
+
+/// Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+- (void)getTokenForcingRefresh:(BOOL)forceRefresh withCallback:(FIRTokenCallback)callback;
+
+/// Get the current Auth user's UID. Returns nil if there is no user signed in.
+- (nullable NSString *)getUserID;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* FIRAuthInterop_h */
diff --git a/ChattingApp 000/Pods/FirebaseAuth/LICENSE b/ChattingApp 000/Pods/FirebaseAuth/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+
+      To apply the Apache License to your work, attach the following
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
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+       http://www.apache.org/licenses/LICENSE-2.0
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+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/ChattingApp 000/Pods/FirebaseAuth/README.md b/ChattingApp 000/Pods/FirebaseAuth/README.md
new file mode 100644
index 0000000..335fbb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseAuth/README.md	
@@ -0,0 +1,333 @@
+[![Version](https://img.shields.io/cocoapods/v/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+
+[![Actions Status][gh-abtesting-badge]][gh-actions]
+[![Actions Status][gh-appcheck-badge]][gh-actions]
+[![Actions Status][gh-appdistribution-badge]][gh-actions]
+[![Actions Status][gh-auth-badge]][gh-actions]
+[![Actions Status][gh-cocoapods-integration-badge]][gh-actions]
+[![Actions Status][gh-core-badge]][gh-actions]
+[![Actions Status][gh-core-diagnostics-badge]][gh-actions]
+[![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+[![Actions Status][gh-dynamiclinks-badge]][gh-actions]
+[![Actions Status][gh-firebasepod-badge]][gh-actions]
+[![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-components-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
+[![Actions Status][gh-interop-badge]][gh-actions]
+[![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-mlmodeldownloader-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
+[![Actions Status][gh-storage-badge]][gh-actions]
+[![Actions Status][gh-symbolcollision-badge]][gh-actions]
+[![Actions Status][gh-zip-badge]][gh-actions]
+
+# Firebase Apple Open Source Development
+
+This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics
+and FirebaseML.
+
+Firebase is an app development platform with tools to help you build, grow and
+monetize your app. More information about Firebase can be found on the
+[official Firebase website](https://firebase.google.com).
+
+**Note** _FirebaseCombineSwift_ contains support for Apple's Combine framework. This module is currently under development, and not yet supported for use in production environments. Fore more details, please refer to the [docs](FirebaseCombineSwift/README.md).
+
+## Installation
+
+See the subsections below for details about the different installation methods.
+1. [Standard pod install](README.md#standard-pod-install)
+1. [Swift Package Manager](SwiftPackageManager.md)
+1. [Installing from the GitHub repo](README.md#installing-from-github)
+1. [Experimental Carthage](README.md#carthage-ios-only)
+
+### Standard pod install
+
+Go to
+[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).
+
+### Swift Package Manager
+
+Instructions for [Swift Package Manager](https://swift.org/package-manager/) support can be
+found at [SwiftPackageManager.md](SwiftPackageManager.md).
+
+### Installing from GitHub
+
+These instructions can be used to access the Firebase repo at other branches,
+tags, or commits.
+
+#### Background
+
+See
+[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
+for instructions and options about overriding pod source locations.
+
+#### Accessing Firebase Source Snapshots
+
+All of the official releases are tagged in this repo and available via CocoaPods. To access a local
+source snapshot or unreleased branch, use Podfile directives like the following:
+
+To access FirebaseFirestore via a branch:
+```ruby
+pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+```
+
+To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:
+
+```ruby
+pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
+pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
+```
+
+### Carthage (iOS only)
+
+Instructions for the experimental Carthage distribution are at
+[Carthage](Carthage.md).
+
+### Using Firebase from a Framework or a library
+
+[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)
+
+## Development
+
+To develop Firebase software in this repository, ensure that you have at least
+the following software:
+
+  * Xcode 12.2 (or later)
+
+CocoaPods is still the canonical way to develop, but much of the repo now supports
+development with Swift Package Manager.
+
+### CocoaPods
+
+Install
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+```ruby
+pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios
+```
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+Firestore has a self contained Xcode project. See
+[Firestore/README.md](Firestore/README.md).
+
+#### Development for Catalyst
+* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Swift Package Manager
+* To enable test schemes: `./scripts/setup_spm_tests.sh`
+* `open Package.swift` or double click `Package.swift` in Finder.
+* Xcode will open the project
+  * Choose a scheme for a library to build or test suite to run
+  * Choose a target platform by selecting the run destination along with the scheme
+
+### Adding a New Firebase Pod
+
+See [AddNewPod.md](AddNewPod.md).
+
+### Managing Headers and Imports
+
+See [HeadersImports.md](HeadersImports.md).
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@12
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+### Running Sample Apps
+In order to run the sample apps and integration tests, you'll need a valid
+`GoogleService-Info.plist` file. The Firebase Xcode project contains dummy plist
+files without real values, but can be replaced with real plist files. To get your own
+`GoogleService-Info.plist` files:
+
+1. Go to the [Firebase Console](https://console.firebase.google.com/)
+2. Create a new Firebase project, if you don't already have one
+3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
+identifier (e.g. `com.google.Database-Example`)
+4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.
+
+### Coverage Report Generation
+
+See [scripts/code_coverage_report/README.md](scripts/code_coverage_report/README.md).
+
+## Specific Component Instructions
+See the sections below for any special instructions for those components.
+
+### Firebase Auth
+
+If you're doing specific Firebase Auth development, see
+[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
+building and running the FirebaseAuth pod along with various samples and tests.
+
+### Firebase Database
+
+The Firebase Database Integration tests can be run against a locally running Database Emulator
+or against a production instance.
+
+To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
+running the integration test.
+
+To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
+`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
+[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
+running.
+
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
+### Firebase Storage
+
+To run the Storage Integration tests, follow the instructions in
+[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).
+
+#### Push Notifications
+
+Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
+In order to actually test receiving push notifications, you will need to:
+
+1. Change the bundle identifier of the sample app to something you own in your Apple Developer
+account, and enable that App ID for push notifications.
+2. You'll also need to
+[upload your APNs Provider Authentication Key or certificate to the
+Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
+at **Project Settings > Cloud Messaging > [Your Firebase App]**.
+3. Ensure your iOS device is added to your Apple Developer portal as a test device.
+
+#### iOS Simulator
+
+The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
+In order to receive push notifications, you'll have to follow the steps above and run the app on a
+physical device.
+
+## Building with Firebase on Apple platforms
+
+At this time, not all of Firebase's products are available across all Apple platforms. However,
+Firebase is constantly evolving and community supported efforts have helped expand Firebase's support.
+To keep up with the latest info regarding Firebase's support across Apple platforms, refer to
+[this chart](https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform)
+in Firebase's documentation.
+
+### Community Supported Efforts
+
+We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
+very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
+participate in the Firebase community.
+
+#### tvOS, macOS, watchOS and Catalyst
+Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and
+work on tvOS, macOS, watchOS and Catalyst.
+
+For tvOS, see the [Sample](Example/tvOSSample).
+For watchOS, currently only Messaging, Storage and Crashlytics (and their dependencies) have limited
+support. See the [Independent Watch App Sample](Example/watchOSSample).
+
+Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and
+this repository is actively developed primarily for iOS. While we can catch basic unit test issues
+with GitHub Actions, there may be some changes where the SDK no longer works as expected on macOS,
+tvOS or watchOS. If you encounter this, please
+[file an issue](https://github.com/firebase/firebase-ios-sdk/issues).
+
+During app setup in the console, you may get to a step that mentions something like "Checking if the
+app has communicated with our servers". This relies on Analytics and will not work on
+macOS/tvOS/watchOS/Catalyst.
+**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.
+
+#### Additional MacOS and Catalyst Notes
+
+* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
+to Build Settings.
+* For Catalyst, FirebaseFirestore requires signing the
+[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).
+
+#### Additional Crashlytics Notes
+* watchOS has limited support. Due to watchOS restrictions, mach exceptions and signal crashes are
+not recorded. (Crashes in SwiftUI are generated as mach exceptions, so will not be recorded)
+
+## Roadmap
+
+See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
+plans and directions.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository are licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+Your use of Firebase is governed by the
+[Terms of Service for Firebase Services](https://firebase.google.com/terms/).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
+[gh-appcheck-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/app_check/badge.svg
+[gh-appdistribution-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/appdistribution/badge.svg
+[gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
+[gh-cocoapods-integration-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/cocoapods-integration/badge.svg
+[gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
+[gh-core-diagnostics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core-diagnostics/badge.svg
+[gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
+[gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
+[gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
+[gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
+[gh-google-utilities-components-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities-components/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
+[gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
+[gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-mlmodeldownloader-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/mlmodeldownloader/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
+[gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
+[gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
+[gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.h
new file mode 100644
index 0000000..6429ac7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.h	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/// Values stored in analyticsEnabledState. Never alter these constants since they must match with
+/// values persisted to disk.
+typedef NS_ENUM(int64_t, FIRAnalyticsEnabledState) {
+  // 0 is the default value for keys not found stored in persisted config, so it cannot represent
+  // kFIRAnalyticsEnabledStateSetNo. It must represent kFIRAnalyticsEnabledStateNotSet.
+  kFIRAnalyticsEnabledStateNotSet = 0,
+  kFIRAnalyticsEnabledStateSetYes = 1,
+  kFIRAnalyticsEnabledStateSetNo = 2,
+};
+
+/// The user defaults key for the persisted measurementEnabledState value. FIRAPersistedConfig reads
+/// measurementEnabledState using this same key.
+static NSString *const kFIRAPersistedConfigMeasurementEnabledStateKey =
+    @"/google/measurement/measurement_enabled_state";
+
+static NSString *const kFIRAnalyticsConfigurationSetEnabledNotification =
+    @"FIRAnalyticsConfigurationSetEnabledNotification";
+static NSString *const kFIRAnalyticsConfigurationSetMinimumSessionIntervalNotification =
+    @"FIRAnalyticsConfigurationSetMinimumSessionIntervalNotification";
+static NSString *const kFIRAnalyticsConfigurationSetSessionTimeoutIntervalNotification =
+    @"FIRAnalyticsConfigurationSetSessionTimeoutIntervalNotification";
+
+@interface FIRAnalyticsConfiguration : NSObject
+
+/// Returns the shared instance of FIRAnalyticsConfiguration.
++ (FIRAnalyticsConfiguration *)sharedInstance;
+
+// Sets whether analytics collection is enabled for this app on this device. This setting is
+// persisted across app sessions. By default it is enabled.
+- (void)setAnalyticsCollectionEnabled:(BOOL)analyticsCollectionEnabled;
+
+/// Sets whether analytics collection is enabled for this app on this device, and a flag to persist
+/// the value or not. The setting should not be persisted if being set by the global data collection
+/// flag.
+- (void)setAnalyticsCollectionEnabled:(BOOL)analyticsCollectionEnabled
+                       persistSetting:(BOOL)shouldPersist;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.m
new file mode 100644
index 0000000..07c786c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAnalyticsConfiguration.m	
@@ -0,0 +1,62 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import "FirebaseCore/Sources/FIRAnalyticsConfiguration.h"
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
+@implementation FIRAnalyticsConfiguration
+#pragma clang diagnostic pop
+
++ (FIRAnalyticsConfiguration *)sharedInstance {
+  static FIRAnalyticsConfiguration *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FIRAnalyticsConfiguration alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (void)postNotificationName:(NSString *)name value:(id)value {
+  if (!name.length || !value) {
+    return;
+  }
+  [[NSNotificationCenter defaultCenter] postNotificationName:name
+                                                      object:self
+                                                    userInfo:@{name : value}];
+}
+
+- (void)setAnalyticsCollectionEnabled:(BOOL)analyticsCollectionEnabled {
+  [self setAnalyticsCollectionEnabled:analyticsCollectionEnabled persistSetting:YES];
+}
+
+- (void)setAnalyticsCollectionEnabled:(BOOL)analyticsCollectionEnabled
+                       persistSetting:(BOOL)shouldPersist {
+  // Persist the measurementEnabledState. Use FIRAnalyticsEnabledState values instead of YES/NO.
+  FIRAnalyticsEnabledState analyticsEnabledState =
+      analyticsCollectionEnabled ? kFIRAnalyticsEnabledStateSetYes : kFIRAnalyticsEnabledStateSetNo;
+  if (shouldPersist) {
+    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
+    [userDefaults setObject:@(analyticsEnabledState)
+                     forKey:kFIRAPersistedConfigMeasurementEnabledStateKey];
+    [userDefaults synchronize];
+  }
+
+  [self postNotificationName:kFIRAnalyticsConfigurationSetEnabledNotification
+                       value:@(analyticsCollectionEnabled)];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRApp.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRApp.m
new file mode 100644
index 0000000..a4c21b3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRApp.m	
@@ -0,0 +1,862 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <sys/utsname.h>
+
+#if __has_include(<UIKit/UIKit.h>)
+#import <UIKit/UIKit.h>
+#endif
+
+#if __has_include(<AppKit/AppKit.h>)
+#import <AppKit/AppKit.h>
+#endif
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRApp.h"
+
+#import "FirebaseCore/Sources/FIRAnalyticsConfiguration.h"
+#import "FirebaseCore/Sources/FIRBundleUtil.h"
+#import "FirebaseCore/Sources/FIRComponentContainerInternal.h"
+#import "FirebaseCore/Sources/FIRConfigurationInternal.h"
+#import "FirebaseCore/Sources/FIRFirebaseUserAgent.h"
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h"
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+
+#import <objc/runtime.h>
+
+// The kFIRService strings are only here while transitioning CoreDiagnostics from the Analytics
+// pod to a Core dependency. These symbols are not used and should be deleted after the transition.
+NSString *const kFIRServiceAdMob;
+NSString *const kFIRServiceAuth;
+NSString *const kFIRServiceAuthUI;
+NSString *const kFIRServiceCrash;
+NSString *const kFIRServiceDatabase;
+NSString *const kFIRServiceDynamicLinks;
+NSString *const kFIRServiceFirestore;
+NSString *const kFIRServiceFunctions;
+NSString *const kFIRServiceInstanceID;
+NSString *const kFIRServiceInvites;
+NSString *const kFIRServiceMessaging;
+NSString *const kFIRServiceMeasurement;
+NSString *const kFIRServicePerformance;
+NSString *const kFIRServiceRemoteConfig;
+NSString *const kFIRServiceStorage;
+NSString *const kGGLServiceAnalytics;
+NSString *const kGGLServiceSignIn;
+
+NSString *const kFIRDefaultAppName = @"__FIRAPP_DEFAULT";
+NSString *const kFIRAppReadyToConfigureSDKNotification = @"FIRAppReadyToConfigureSDKNotification";
+NSString *const kFIRAppDeleteNotification = @"FIRAppDeleteNotification";
+NSString *const kFIRAppIsDefaultAppKey = @"FIRAppIsDefaultAppKey";
+NSString *const kFIRAppNameKey = @"FIRAppNameKey";
+NSString *const kFIRGoogleAppIDKey = @"FIRGoogleAppIDKey";
+
+NSString *const kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat =
+    @"/google/firebase/global_data_collection_enabled:%@";
+NSString *const kFIRGlobalAppDataCollectionEnabledPlistKey =
+    @"FirebaseDataCollectionDefaultEnabled";
+
+NSString *const kFIRAppDiagnosticsConfigurationTypeKey = @"ConfigType";
+NSString *const kFIRAppDiagnosticsErrorKey = @"Error";
+NSString *const kFIRAppDiagnosticsFIRAppKey = @"FIRApp";
+NSString *const kFIRAppDiagnosticsSDKNameKey = @"SDKName";
+NSString *const kFIRAppDiagnosticsSDKVersionKey = @"SDKVersion";
+NSString *const kFIRAppDiagnosticsApplePlatformPrefix = @"apple-platform";
+
+// Auth internal notification notification and key.
+NSString *const FIRAuthStateDidChangeInternalNotification =
+    @"FIRAuthStateDidChangeInternalNotification";
+NSString *const FIRAuthStateDidChangeInternalNotificationAppKey =
+    @"FIRAuthStateDidChangeInternalNotificationAppKey";
+NSString *const FIRAuthStateDidChangeInternalNotificationTokenKey =
+    @"FIRAuthStateDidChangeInternalNotificationTokenKey";
+NSString *const FIRAuthStateDidChangeInternalNotificationUIDKey =
+    @"FIRAuthStateDidChangeInternalNotificationUIDKey";
+
+/**
+ * Error domain for exceptions and NSError construction.
+ */
+NSString *const kFirebaseCoreErrorDomain = @"com.firebase.core";
+
+/** The NSUserDefaults suite name for FirebaseCore, for those storage locations that use it. */
+NSString *const kFirebaseCoreDefaultsSuiteName = @"com.firebase.core";
+
+/**
+ * The URL to download plist files.
+ */
+static NSString *const kPlistURL = @"https://console.firebase.google.com/";
+
+/**
+ * An array of all classes that registered as `FIRCoreConfigurable` in order to receive lifecycle
+ * events from Core.
+ */
+static NSMutableArray<Class<FIRLibrary>> *sRegisteredAsConfigurable;
+
+@interface FIRApp ()
+
+#ifdef DEBUG
+@property(nonatomic) BOOL alreadyOutputDataCollectionFlag;
+#endif  // DEBUG
+
+@end
+
+@implementation FIRApp
+
+// This is necessary since our custom getter prevents `_options` from being created.
+@synthesize options = _options;
+
+static NSMutableDictionary *sAllApps;
+static FIRApp *sDefaultApp;
+
++ (void)configure {
+  FIROptions *options = [FIROptions defaultOptions];
+  if (!options) {
+    [NSException raise:kFirebaseCoreErrorDomain
+                format:@"`FirebaseApp.configure()` could not find "
+                       @"a valid GoogleService-Info.plist in your project. Please download one "
+                       @"from %@.",
+                       kPlistURL];
+  }
+  [FIRApp configureWithOptions:options];
+#if TARGET_OS_OSX || TARGET_OS_TV
+  FIRLogNotice(kFIRLoggerCore, @"I-COR000028",
+               @"tvOS and macOS SDK support is not part of the official Firebase product. "
+               @"Instead they are community supported. Details at "
+               @"https://github.com/firebase/firebase-ios-sdk/blob/master/README.md.");
+#endif
+}
+
++ (void)configureWithOptions:(FIROptions *)options {
+  if (!options) {
+    [NSException raise:kFirebaseCoreErrorDomain
+                format:@"Options is nil. Please pass a valid options."];
+  }
+  [FIRApp configureWithName:kFIRDefaultAppName options:options];
+}
+
++ (NSCharacterSet *)applicationNameAllowedCharacters {
+  static NSCharacterSet *applicationNameAllowedCharacters;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSMutableCharacterSet *allowedNameCharacters = [NSMutableCharacterSet alphanumericCharacterSet];
+    [allowedNameCharacters addCharactersInString:@"-_"];
+    applicationNameAllowedCharacters = [allowedNameCharacters copy];
+  });
+  return applicationNameAllowedCharacters;
+}
+
++ (void)configureWithName:(NSString *)name options:(FIROptions *)options {
+  if (!name || !options) {
+    [NSException raise:kFirebaseCoreErrorDomain format:@"Neither name nor options can be nil."];
+  }
+  if (name.length == 0) {
+    [NSException raise:kFirebaseCoreErrorDomain format:@"Name cannot be empty."];
+  }
+
+  if ([name isEqualToString:kFIRDefaultAppName]) {
+    if (sDefaultApp) {
+      // The default app already exists. Handle duplicate `configure` calls and return.
+      [self appWasConfiguredTwice:sDefaultApp usingOptions:options];
+      return;
+    }
+
+    FIRLogDebug(kFIRLoggerCore, @"I-COR000001", @"Configuring the default app.");
+  } else {
+    // Validate the app name and ensure it hasn't been configured already.
+    NSCharacterSet *nameCharacters = [NSCharacterSet characterSetWithCharactersInString:name];
+
+    if (![[self applicationNameAllowedCharacters] isSupersetOfSet:nameCharacters]) {
+      [NSException raise:kFirebaseCoreErrorDomain
+                  format:@"App name can only contain alphanumeric, "
+                         @"hyphen (-), and underscore (_) characters"];
+    }
+
+    @synchronized(self) {
+      if (sAllApps && sAllApps[name]) {
+        // The app already exists. Handle a duplicate `configure` call and return.
+        [self appWasConfiguredTwice:sAllApps[name] usingOptions:options];
+        return;
+      }
+    }
+
+    FIRLogDebug(kFIRLoggerCore, @"I-COR000002", @"Configuring app named %@", name);
+  }
+
+  @synchronized(self) {
+    FIRApp *app = [[FIRApp alloc] initInstanceWithName:name options:options];
+    if (app.isDefaultApp) {
+      sDefaultApp = app;
+    }
+
+    [FIRApp addAppToAppDictionary:app];
+
+    // The FIRApp instance is ready to go, `sDefaultApp` is assigned, other SDKs are now ready to be
+    // instantiated.
+    [app.container instantiateEagerComponents];
+    [FIRApp sendNotificationsToSDKs:app];
+  }
+}
+
+/// Called when `configure` has been called multiple times for the same app. This can either throw
+/// an exception (most cases) or ignore the duplicate configuration in situations where it's allowed
+/// like an extension.
++ (void)appWasConfiguredTwice:(FIRApp *)app usingOptions:(FIROptions *)options {
+  // Only extensions should potentially be able to call `configure` more than once.
+  if (![GULAppEnvironmentUtil isAppExtension]) {
+    // Throw an exception since this is now an invalid state.
+    if (app.isDefaultApp) {
+      [NSException raise:kFirebaseCoreErrorDomain
+                  format:@"Default app has already been configured."];
+    } else {
+      [NSException raise:kFirebaseCoreErrorDomain
+                  format:@"App named %@ has already been configured.", app.name];
+    }
+  }
+
+  // In an extension, the entry point could be called multiple times. As long as the options are
+  // identical we should allow multiple `configure` calls.
+  if ([options isEqual:app.options]) {
+    // Everything is identical but the extension's lifecycle triggered `configure` twice.
+    // Ignore duplicate calls and return since everything should still be in a valid state.
+    FIRLogDebug(kFIRLoggerCore, @"I-COR000035",
+                @"Ignoring second `configure` call in an extension.");
+    return;
+  } else {
+    [NSException raise:kFirebaseCoreErrorDomain
+                format:@"App named %@ has already been configured.", app.name];
+  }
+}
+
++ (FIRApp *)defaultApp {
+  if (sDefaultApp) {
+    return sDefaultApp;
+  }
+  FIRLogError(kFIRLoggerCore, @"I-COR000003",
+              @"The default Firebase app has not yet been "
+              @"configured. Add `FirebaseApp.configure()` to your "
+              @"application initialization. This can be done in "
+              @"in the App Delegate's application(_:didFinishLaunchingWithOptions:)` "
+              @"(or the `@main` struct's initializer in SwiftUI). "
+              @"Read more: https://goo.gl/ctyzm8.");
+  return nil;
+}
+
++ (FIRApp *)appNamed:(NSString *)name {
+  @synchronized(self) {
+    if (sAllApps) {
+      FIRApp *app = sAllApps[name];
+      if (app) {
+        return app;
+      }
+    }
+    FIRLogError(kFIRLoggerCore, @"I-COR000004", @"App with name %@ does not exist.", name);
+    return nil;
+  }
+}
+
++ (NSDictionary *)allApps {
+  @synchronized(self) {
+    if (!sAllApps) {
+      FIRLogError(kFIRLoggerCore, @"I-COR000005", @"No app has been configured yet.");
+    }
+    return [sAllApps copy];
+  }
+}
+
+// Public only for tests
++ (void)resetApps {
+  @synchronized(self) {
+    sDefaultApp = nil;
+    [sAllApps removeAllObjects];
+    sAllApps = nil;
+    [[self userAgent] reset];
+  }
+}
+
+- (void)deleteApp:(FIRAppVoidBoolCallback)completion {
+  @synchronized([self class]) {
+    if (sAllApps && sAllApps[self.name]) {
+      FIRLogDebug(kFIRLoggerCore, @"I-COR000006", @"Deleting app named %@", self.name);
+
+      // Remove all registered libraries from the container to avoid creating new instances.
+      [self.container removeAllComponents];
+      // Remove all cached instances from the container before deleting the app.
+      [self.container removeAllCachedInstances];
+
+      [sAllApps removeObjectForKey:self.name];
+      [self clearDataCollectionSwitchFromUserDefaults];
+      if ([self.name isEqualToString:kFIRDefaultAppName]) {
+        sDefaultApp = nil;
+      }
+      NSDictionary *appInfoDict = @{kFIRAppNameKey : self.name};
+      [[NSNotificationCenter defaultCenter] postNotificationName:kFIRAppDeleteNotification
+                                                          object:[self class]
+                                                        userInfo:appInfoDict];
+      completion(YES);
+    } else {
+      FIRLogError(kFIRLoggerCore, @"I-COR000007", @"App does not exist.");
+      completion(NO);
+    }
+  }
+}
+
++ (void)addAppToAppDictionary:(FIRApp *)app {
+  if (!sAllApps) {
+    sAllApps = [NSMutableDictionary dictionary];
+  }
+  if ([app configureCore]) {
+    sAllApps[app.name] = app;
+  } else {
+    [NSException raise:kFirebaseCoreErrorDomain
+                format:@"Configuration fails. It may be caused by an invalid GOOGLE_APP_ID in "
+                       @"GoogleService-Info.plist or set in the customized options."];
+  }
+}
+
+- (instancetype)initInstanceWithName:(NSString *)name options:(FIROptions *)options {
+  self = [super init];
+  if (self) {
+    _name = [name copy];
+    _options = [options copy];
+    _options.editingLocked = YES;
+    _isDefaultApp = [name isEqualToString:kFIRDefaultAppName];
+    _container = [[FIRComponentContainer alloc] initWithApp:self];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+- (BOOL)configureCore {
+  [self checkExpectedBundleID];
+  if (![self isAppIDValid]) {
+    return NO;
+  }
+
+  // Initialize the Analytics once there is a valid options under default app. Analytics should
+  // always initialize first by itself before the other SDKs.
+  if ([self.name isEqualToString:kFIRDefaultAppName]) {
+    Class firAnalyticsClass = NSClassFromString(@"FIRAnalytics");
+    if (firAnalyticsClass) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wundeclared-selector"
+      SEL startWithConfigurationSelector = @selector(startWithConfiguration:options:);
+#pragma clang diagnostic pop
+      if ([firAnalyticsClass respondsToSelector:startWithConfigurationSelector]) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+        [firAnalyticsClass performSelector:startWithConfigurationSelector
+                                withObject:[FIRConfiguration sharedInstance].analyticsConfiguration
+                                withObject:_options];
+#pragma clang diagnostic pop
+      }
+    }
+  }
+
+  [self subscribeForAppDidBecomeActiveNotifications];
+
+  return YES;
+}
+
+- (FIROptions *)options {
+  return [_options copy];
+}
+
+- (void)setDataCollectionDefaultEnabled:(BOOL)dataCollectionDefaultEnabled {
+#ifdef DEBUG
+  FIRLogDebug(kFIRLoggerCore, @"I-COR000034", @"Explicitly %@ data collection flag.",
+              dataCollectionDefaultEnabled ? @"enabled" : @"disabled");
+  self.alreadyOutputDataCollectionFlag = YES;
+#endif  // DEBUG
+
+  NSString *key =
+      [NSString stringWithFormat:kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat, self.name];
+  [[NSUserDefaults standardUserDefaults] setBool:dataCollectionDefaultEnabled forKey:key];
+
+  // Core also controls the FirebaseAnalytics flag, so check if the Analytics flags are set
+  // within FIROptions and change the Analytics value if necessary. Analytics only works with the
+  // default app, so return if this isn't the default app.
+  if (!self.isDefaultApp) {
+    return;
+  }
+
+  // Check if the Analytics flag is explicitly set. If so, no further actions are necessary.
+  if ([self.options isAnalyticsCollectionExplicitlySet]) {
+    return;
+  }
+
+  // The Analytics flag has not been explicitly set, so update with the value being set.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  [[FIRAnalyticsConfiguration sharedInstance]
+    setAnalyticsCollectionEnabled:dataCollectionDefaultEnabled
+                   persistSetting:NO];
+#pragma clang diagnostic pop
+}
+
+- (BOOL)isDataCollectionDefaultEnabled {
+  // Check if it's been manually set before in code, and use that as the higher priority value.
+  NSNumber *defaultsObject = [[self class] readDataCollectionSwitchFromUserDefaultsForApp:self];
+  if (defaultsObject != nil) {
+#ifdef DEBUG
+    if (!self.alreadyOutputDataCollectionFlag) {
+      FIRLogDebug(kFIRLoggerCore, @"I-COR000031", @"Data Collection flag is %@ in user defaults.",
+                  [defaultsObject boolValue] ? @"enabled" : @"disabled");
+      self.alreadyOutputDataCollectionFlag = YES;
+    }
+#endif  // DEBUG
+    return [defaultsObject boolValue];
+  }
+
+  // Read the Info.plist to see if the flag is set. If it's not set, it should default to `YES`.
+  // As per the implementation of `readDataCollectionSwitchFromPlist`, it's a cached value and has
+  // no performance impact calling multiple times.
+  NSNumber *collectionEnabledPlistValue = [[self class] readDataCollectionSwitchFromPlist];
+  if (collectionEnabledPlistValue != nil) {
+#ifdef DEBUG
+    if (!self.alreadyOutputDataCollectionFlag) {
+      FIRLogDebug(kFIRLoggerCore, @"I-COR000032", @"Data Collection flag is %@ in plist.",
+                  [collectionEnabledPlistValue boolValue] ? @"enabled" : @"disabled");
+      self.alreadyOutputDataCollectionFlag = YES;
+    }
+#endif  // DEBUG
+    return [collectionEnabledPlistValue boolValue];
+  }
+
+#ifdef DEBUG
+  if (!self.alreadyOutputDataCollectionFlag) {
+    FIRLogDebug(kFIRLoggerCore, @"I-COR000033", @"Data Collection flag is not set.");
+    self.alreadyOutputDataCollectionFlag = YES;
+  }
+#endif  // DEBUG
+  return YES;
+}
+
+#pragma mark - private
+
++ (void)sendNotificationsToSDKs:(FIRApp *)app {
+  // TODO: Remove this notification once all SDKs are registered with `FIRCoreConfigurable`.
+  NSNumber *isDefaultApp = [NSNumber numberWithBool:app.isDefaultApp];
+  NSDictionary *appInfoDict = @{
+    kFIRAppNameKey : app.name,
+    kFIRAppIsDefaultAppKey : isDefaultApp,
+    kFIRGoogleAppIDKey : app.options.googleAppID
+  };
+  [[NSNotificationCenter defaultCenter] postNotificationName:kFIRAppReadyToConfigureSDKNotification
+                                                      object:self
+                                                    userInfo:appInfoDict];
+
+  // This is the new way of sending information to SDKs.
+  // TODO: Do we want this on a background thread, maybe?
+  @synchronized(self) {
+    for (Class<FIRLibrary> library in sRegisteredAsConfigurable) {
+      [library configureWithApp:app];
+    }
+  }
+}
+
++ (NSError *)errorForMissingOptions {
+  NSDictionary *errorDict = @{
+    NSLocalizedDescriptionKey :
+        @"Unable to parse GoogleService-Info.plist in order to configure services.",
+    NSLocalizedRecoverySuggestionErrorKey :
+        @"Check formatting and location of GoogleService-Info.plist."
+  };
+  return [NSError errorWithDomain:kFirebaseCoreErrorDomain code:-100 userInfo:errorDict];
+}
+
++ (NSError *)errorForInvalidAppID {
+  NSDictionary *errorDict = @{
+    NSLocalizedDescriptionKey : @"Unable to validate Google App ID",
+    NSLocalizedRecoverySuggestionErrorKey :
+        @"Check formatting and location of GoogleService-Info.plist or GoogleAppID set in the "
+        @"customized options."
+  };
+  return [NSError errorWithDomain:kFirebaseCoreErrorDomain code:-101 userInfo:errorDict];
+}
+
++ (BOOL)isDefaultAppConfigured {
+  return (sDefaultApp != nil);
+}
+
++ (void)registerLibrary:(nonnull NSString *)name withVersion:(nonnull NSString *)version {
+  // Create the set of characters which aren't allowed, only if this feature is used.
+  NSMutableCharacterSet *allowedSet = [NSMutableCharacterSet alphanumericCharacterSet];
+  [allowedSet addCharactersInString:@"-_."];
+  NSCharacterSet *disallowedSet = [allowedSet invertedSet];
+  // Make sure the library name and version strings do not contain unexpected characters, and
+  // add the name/version pair to the dictionary.
+  if ([name rangeOfCharacterFromSet:disallowedSet].location == NSNotFound &&
+      [version rangeOfCharacterFromSet:disallowedSet].location == NSNotFound) {
+    [[self userAgent] setValue:version forComponent:name];
+  } else {
+    FIRLogError(kFIRLoggerCore, @"I-COR000027",
+                @"The library name (%@) or version number (%@) contain invalid characters. "
+                @"Only alphanumeric, dash, underscore and period characters are allowed.",
+                name, version);
+  }
+}
+
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name {
+  [self registerInternalLibrary:library withName:name withVersion:FIRFirebaseVersion()];
+}
+
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name
+                    withVersion:(nonnull NSString *)version {
+  // This is called at +load time, keep the work to a minimum.
+
+  // Ensure the class given conforms to the proper protocol.
+  if (![(Class)library conformsToProtocol:@protocol(FIRLibrary)] ||
+      ![(Class)library respondsToSelector:@selector(componentsToRegister)]) {
+    [NSException raise:NSInvalidArgumentException
+                format:@"Class %@ attempted to register components, but it does not conform to "
+                       @"`FIRLibrary or provide a `componentsToRegister:` method.",
+                       library];
+  }
+
+  [FIRComponentContainer registerAsComponentRegistrant:library];
+  if ([(Class)library respondsToSelector:@selector(configureWithApp:)]) {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+      sRegisteredAsConfigurable = [[NSMutableArray alloc] init];
+    });
+    @synchronized(self) {
+      [sRegisteredAsConfigurable addObject:library];
+    }
+  }
+  [self registerLibrary:name withVersion:version];
+}
+
++ (FIRFirebaseUserAgent *)userAgent {
+  static dispatch_once_t onceToken;
+  static FIRFirebaseUserAgent *_userAgent;
+  dispatch_once(&onceToken, ^{
+    _userAgent = [[FIRFirebaseUserAgent alloc] init];
+    [_userAgent setValue:FIRFirebaseVersion() forComponent:@"fire-ios"];
+  });
+  return _userAgent;
+}
+
++ (NSString *)firebaseUserAgent {
+  return [[self userAgent] firebaseUserAgent];
+}
+
+- (void)checkExpectedBundleID {
+  NSArray *bundles = [FIRBundleUtil relevantBundles];
+  NSString *expectedBundleID = [self expectedBundleID];
+  // The checking is only done when the bundle ID is provided in the serviceInfo dictionary for
+  // backward compatibility.
+  if (expectedBundleID != nil && ![FIRBundleUtil hasBundleIdentifierPrefix:expectedBundleID
+                                                                 inBundles:bundles]) {
+    FIRLogError(kFIRLoggerCore, @"I-COR000008",
+                @"The project's Bundle ID is inconsistent with "
+                @"either the Bundle ID in '%@.%@', or the Bundle ID in the options if you are "
+                @"using a customized options. To ensure that everything can be configured "
+                @"correctly, you may need to make the Bundle IDs consistent. To continue with this "
+                @"plist file, you may change your app's bundle identifier to '%@'. Or you can "
+                @"download a new configuration file that matches your bundle identifier from %@ "
+                @"and replace the current one.",
+                kServiceInfoFileName, kServiceInfoFileType, expectedBundleID, kPlistURL);
+  }
+}
+
+#pragma mark - private - App ID Validation
+
+/**
+ * Validates the format and fingerprint of the app ID contained in GOOGLE_APP_ID in the plist file.
+ * This is the main method for validating app ID.
+ *
+ * @return YES if the app ID fulfills the expected format and fingerprint, NO otherwise.
+ */
+- (BOOL)isAppIDValid {
+  NSString *appID = _options.googleAppID;
+  BOOL isValid = [FIRApp validateAppID:appID];
+  if (!isValid) {
+    NSString *expectedBundleID = [self expectedBundleID];
+    FIRLogError(kFIRLoggerCore, @"I-COR000009",
+                @"The GOOGLE_APP_ID either in the plist file "
+                @"'%@.%@' or the one set in the customized options is invalid. If you are using "
+                @"the plist file, use the iOS version of bundle identifier to download the file, "
+                @"and do not manually edit the GOOGLE_APP_ID. You may change your app's bundle "
+                @"identifier to '%@'. Or you can download a new configuration file that matches "
+                @"your bundle identifier from %@ and replace the current one.",
+                kServiceInfoFileName, kServiceInfoFileType, expectedBundleID, kPlistURL);
+  };
+  return isValid;
+}
+
++ (BOOL)validateAppID:(NSString *)appID {
+  // Failing validation only occurs when we are sure we are looking at a V2 app ID and it does not
+  // have a valid fingerprint, otherwise we just warn about the potential issue.
+  if (!appID.length) {
+    return NO;
+  }
+
+  NSScanner *stringScanner = [NSScanner scannerWithString:appID];
+  stringScanner.charactersToBeSkipped = nil;
+
+  NSString *appIDVersion;
+  if (![stringScanner scanCharactersFromSet:[NSCharacterSet decimalDigitCharacterSet]
+                                 intoString:&appIDVersion]) {
+    return NO;
+  }
+
+  if (![stringScanner scanString:@":" intoString:NULL]) {
+    // appIDVersion must be separated by ":"
+    return NO;
+  }
+
+  NSArray *knownVersions = @[ @"1" ];
+  if (![knownVersions containsObject:appIDVersion]) {
+    // Permit unknown yet properly formatted app ID versions.
+    FIRLogInfo(kFIRLoggerCore, @"I-COR000010", @"Unknown GOOGLE_APP_ID version: %@", appIDVersion);
+    return YES;
+  }
+
+  if (![self validateAppIDFormat:appID withVersion:appIDVersion]) {
+    return NO;
+  }
+
+  if (![self validateAppIDFingerprint:appID withVersion:appIDVersion]) {
+    return NO;
+  }
+
+  return YES;
+}
+
++ (NSString *)actualBundleID {
+  return [[NSBundle mainBundle] bundleIdentifier];
+}
+
+/**
+ * Validates that the format of the app ID string is what is expected based on the supplied version.
+ * The version must end in ":".
+ *
+ * For v1 app ids the format is expected to be
+ * '<version #>:<project number>:ios:<fingerprint of bundle id>'.
+ *
+ * This method does not verify that the contents of the app id are correct, just that they fulfill
+ * the expected format.
+ *
+ * @param appID Contents of GOOGLE_APP_ID from the plist file.
+ * @param version Indicates what version of the app id format this string should be.
+ * @return YES if provided string fufills the expected format, NO otherwise.
+ */
++ (BOOL)validateAppIDFormat:(NSString *)appID withVersion:(NSString *)version {
+  if (!appID.length || !version.length) {
+    return NO;
+  }
+
+  NSScanner *stringScanner = [NSScanner scannerWithString:appID];
+  stringScanner.charactersToBeSkipped = nil;
+
+  // Skip version part
+  // '*<version #>*:<project number>:ios:<fingerprint of bundle id>'
+  if (![stringScanner scanString:version intoString:NULL]) {
+    // The version part is missing or mismatched
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>*:*<project number>:ios:<fingerprint of bundle id>'
+  if (![stringScanner scanString:@":" intoString:NULL]) {
+    // appIDVersion must be separated by ":"
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>:*<project number>*:ios:<fingerprint of bundle id>'.
+  NSInteger projectNumber = NSNotFound;
+  if (![stringScanner scanInteger:&projectNumber]) {
+    // NO project number found.
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>:<project number>*:*ios:<fingerprint of bundle id>'.
+  if (![stringScanner scanString:@":" intoString:NULL]) {
+    // The project number must be separated by ":"
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>:<project number>:*ios*:<fingerprint of bundle id>'.
+  NSString *platform;
+  if (![stringScanner scanUpToString:@":" intoString:&platform]) {
+    return NO;
+  }
+
+  if (![platform isEqualToString:@"ios"]) {
+    // The platform must be @"ios"
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>:<project number>:ios*:*<fingerprint of bundle id>'.
+  if (![stringScanner scanString:@":" intoString:NULL]) {
+    // The platform must be separated by ":"
+    return NO;
+  }
+
+  // Validate version part (see part between '*' symbols below)
+  // '<version #>:<project number>:ios:*<fingerprint of bundle id>*'.
+  unsigned long long fingerprint = NSNotFound;
+  if (![stringScanner scanHexLongLong:&fingerprint]) {
+    // Fingerprint part is missing
+    return NO;
+  }
+
+  if (!stringScanner.isAtEnd) {
+    // There are not allowed characters in the fingerprint part
+    return NO;
+  }
+
+  return YES;
+}
+
+/**
+ * Validates that the fingerprint of the app ID string is what is expected based on the supplied
+ * version.
+ *
+ * Note that the v1 hash algorithm is not permitted on the client and cannot be fully validated.
+ *
+ * @param appID Contents of GOOGLE_APP_ID from the plist file.
+ * @param version Indicates what version of the app id format this string should be.
+ * @return YES if provided string fufills the expected fingerprint and the version is known, NO
+ *         otherwise.
+ */
++ (BOOL)validateAppIDFingerprint:(NSString *)appID withVersion:(NSString *)version {
+  // Extract the supplied fingerprint from the supplied app ID.
+  // This assumes the app ID format is the same for all known versions below. If the app ID format
+  // changes in future versions, the tokenizing of the app ID format will need to take into account
+  // the version of the app ID.
+  NSArray *components = [appID componentsSeparatedByString:@":"];
+  if (components.count != 4) {
+    return NO;
+  }
+
+  NSString *suppliedFingerprintString = components[3];
+  if (!suppliedFingerprintString.length) {
+    return NO;
+  }
+
+  uint64_t suppliedFingerprint;
+  NSScanner *scanner = [NSScanner scannerWithString:suppliedFingerprintString];
+  if (![scanner scanHexLongLong:&suppliedFingerprint]) {
+    return NO;
+  }
+
+  if ([version isEqual:@"1"]) {
+    // The v1 hash algorithm is not permitted on the client so the actual hash cannot be validated.
+    return YES;
+  }
+
+  // Unknown version.
+  return NO;
+}
+
+- (NSString *)expectedBundleID {
+  return _options.bundleID;
+}
+
+// end App ID validation
+
+#pragma mark - Reading From Plist & User Defaults
+
+/**
+ * Clears the data collection switch from the standard NSUserDefaults for easier testing and
+ * readability.
+ */
+- (void)clearDataCollectionSwitchFromUserDefaults {
+  NSString *key =
+      [NSString stringWithFormat:kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat, self.name];
+  [[NSUserDefaults standardUserDefaults] removeObjectForKey:key];
+}
+
+/**
+ * Reads the data collection switch from the standard NSUserDefaults for easier testing and
+ * readability.
+ */
++ (nullable NSNumber *)readDataCollectionSwitchFromUserDefaultsForApp:(FIRApp *)app {
+  // Read the object in user defaults, and only return if it's an NSNumber.
+  NSString *key =
+      [NSString stringWithFormat:kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat, app.name];
+  id collectionEnabledDefaultsObject = [[NSUserDefaults standardUserDefaults] objectForKey:key];
+  if ([collectionEnabledDefaultsObject isKindOfClass:[NSNumber class]]) {
+    return collectionEnabledDefaultsObject;
+  }
+
+  return nil;
+}
+
+/**
+ * Reads the data collection switch from the Info.plist for easier testing and readability. Will
+ * only read once from the plist and return the cached value.
+ */
++ (nullable NSNumber *)readDataCollectionSwitchFromPlist {
+  static NSNumber *collectionEnabledPlistObject;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    // Read the data from the `Info.plist`, only assign it if it's there and an NSNumber.
+    id plistValue = [[NSBundle mainBundle]
+        objectForInfoDictionaryKey:kFIRGlobalAppDataCollectionEnabledPlistKey];
+    if (plistValue && [plistValue isKindOfClass:[NSNumber class]]) {
+      collectionEnabledPlistObject = (NSNumber *)plistValue;
+    }
+  });
+
+  return collectionEnabledPlistObject;
+}
+
+#pragma mark - App Life Cycle
+
+- (void)subscribeForAppDidBecomeActiveNotifications {
+#if TARGET_OS_IOS || TARGET_OS_TV
+  NSNotificationName notificationName = UIApplicationDidBecomeActiveNotification;
+#elif TARGET_OS_OSX
+  NSNotificationName notificationName = NSApplicationDidBecomeActiveNotification;
+#endif
+
+#if !TARGET_OS_WATCH
+  [[NSNotificationCenter defaultCenter] addObserver:self
+                                           selector:@selector(appDidBecomeActive:)
+                                               name:notificationName
+                                             object:nil];
+#endif
+}
+
+- (void)appDidBecomeActive:(NSNotification *)notification {
+  [self logCoreTelemetryIfEnabled];
+}
+
+- (void)logCoreTelemetryIfEnabled {
+  if ([self isDataCollectionDefaultEnabled]) {
+    dispatch_async(dispatch_get_global_queue(QOS_CLASS_UTILITY, 0), ^{
+      [FIRCoreDiagnosticsConnector logCoreTelemetryWithOptions:[self options]];
+    });
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.h
new file mode 100644
index 0000000..3fc69c6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.h	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+//  TODO: Remove this once Auth moves over to Core's instance registration system.
+/** @class FIRAppAssociationRegistration
+    @brief Manages object associations as a singleton-dependent: At most one object is
+        registered for any given host/key pair, and the object shall be created on-the-fly when
+        asked for.
+ */
+@interface FIRAppAssociationRegistration<ObjectType> : NSObject
+
+/** @fn registeredObjectWithHost:key:creationBlock:
+    @brief Retrieves the registered object with a particular host and key.
+    @param host The host object.
+    @param key The key to specify the registered object on the host.
+    @param creationBlock The block to return the object to be registered if not already.
+        The block is executed immediately before this method returns if it is executed at all.
+        It can also be executed multiple times across different method invocations if previous
+        execution of the block returns @c nil.
+    @return The registered object for the host/key pair, or @c nil if no object is registered
+        and @c creationBlock returns @c nil.
+    @remarks The method is thread-safe but non-reentrant in the sense that attempting to call this
+        method again within the @c creationBlock with the same host/key pair raises an exception.
+        The registered object is retained by the host.
+ */
++ (nullable ObjectType)registeredObjectWithHost:(id)host
+                                            key:(NSString *)key
+                                  creationBlock:(ObjectType _Nullable (^)(void))creationBlock;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.m
new file mode 100644
index 0000000..f3f812c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRAppAssociationRegistration.m	
@@ -0,0 +1,47 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/FIRAppAssociationRegistration.h"
+
+#import <objc/runtime.h>
+
+@implementation FIRAppAssociationRegistration
+
++ (nullable id)registeredObjectWithHost:(id)host
+                                    key:(NSString *)key
+                          creationBlock:(id _Nullable (^)(void))creationBlock {
+  @synchronized(self) {
+    SEL dictKey = @selector(registeredObjectWithHost:key:creationBlock:);
+    NSMutableDictionary<NSString *, id> *objectsByKey = objc_getAssociatedObject(host, dictKey);
+    if (!objectsByKey) {
+      objectsByKey = [[NSMutableDictionary alloc] init];
+      objc_setAssociatedObject(host, dictKey, objectsByKey, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    }
+    id obj = objectsByKey[key];
+    NSValue *creationBlockBeingCalled = [NSValue valueWithPointer:dictKey];
+    if (obj) {
+      if ([creationBlockBeingCalled isEqual:obj]) {
+        [NSException raise:@"Reentering registeredObjectWithHost:key:creationBlock: not allowed"
+                    format:@"host: %@ key: %@", host, key];
+      }
+      return obj;
+    }
+    objectsByKey[key] = creationBlockBeingCalled;
+    obj = creationBlock();
+    objectsByKey[key] = obj;
+    return obj;
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.h
new file mode 100644
index 0000000..d9475dd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/**
+ * This class provides utilities for accessing resources in bundles.
+ */
+@interface FIRBundleUtil : NSObject
+
+/**
+ * Finds all relevant bundles, starting with [NSBundle mainBundle].
+ */
++ (NSArray *)relevantBundles;
+
+/**
+ * Reads the options dictionary from one of the provided bundles.
+ *
+ * @param resourceName The resource name, e.g. @"GoogleService-Info".
+ * @param fileType The file type (extension), e.g. @"plist".
+ * @param bundles The bundles to expect, in priority order. See also
+ * +[FIRBundleUtil relevantBundles].
+ */
++ (NSString *)optionsDictionaryPathWithResourceName:(NSString *)resourceName
+                                        andFileType:(NSString *)fileType
+                                          inBundles:(NSArray *)bundles;
+
+/**
+ * Finds URL schemes defined in all relevant bundles, starting with those from
+ * [NSBundle mainBundle].
+ */
++ (NSArray *)relevantURLSchemes;
+
+/**
+ * Checks if any of the given bundles have a matching bundle identifier prefix (removing extension
+ * suffixes).
+ */
++ (BOOL)hasBundleIdentifierPrefix:(NSString *)bundleIdentifier inBundles:(NSArray *)bundles;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.m
new file mode 100644
index 0000000..de2c295
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRBundleUtil.m	
@@ -0,0 +1,79 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/FIRBundleUtil.h"
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+
+@implementation FIRBundleUtil
+
++ (NSArray *)relevantBundles {
+  return @[ [NSBundle mainBundle], [NSBundle bundleForClass:[self class]] ];
+}
+
++ (NSString *)optionsDictionaryPathWithResourceName:(NSString *)resourceName
+                                        andFileType:(NSString *)fileType
+                                          inBundles:(NSArray *)bundles {
+  // Loop through all bundles to find the config dict.
+  for (NSBundle *bundle in bundles) {
+    NSString *path = [bundle pathForResource:resourceName ofType:fileType];
+    // Use the first one we find.
+    if (path) {
+      return path;
+    }
+  }
+  return nil;
+}
+
++ (NSArray *)relevantURLSchemes {
+  NSMutableArray *result = [[NSMutableArray alloc] init];
+  for (NSBundle *bundle in [[self class] relevantBundles]) {
+    NSArray *urlTypes = [bundle objectForInfoDictionaryKey:@"CFBundleURLTypes"];
+    for (NSDictionary *urlType in urlTypes) {
+      [result addObjectsFromArray:urlType[@"CFBundleURLSchemes"]];
+    }
+  }
+  return result;
+}
+
++ (BOOL)hasBundleIdentifierPrefix:(NSString *)bundleIdentifier inBundles:(NSArray *)bundles {
+  for (NSBundle *bundle in bundles) {
+    if ([bundle.bundleIdentifier isEqualToString:bundleIdentifier]) {
+      return YES;
+    }
+
+    if ([GULAppEnvironmentUtil isAppExtension]) {
+      // A developer could be using the same `FIROptions` for both their app and extension. Since
+      // extensions have a suffix added to the bundleID, we consider a matching prefix as valid.
+      NSString *appBundleIDFromExtension =
+          [self bundleIdentifierByRemovingLastPartFrom:bundle.bundleIdentifier];
+      if ([appBundleIDFromExtension isEqualToString:bundleIdentifier]) {
+        return YES;
+      }
+    }
+  }
+  return NO;
+}
+
++ (NSString *)bundleIdentifierByRemovingLastPartFrom:(NSString *)bundleIdentifier {
+  NSString *bundleIDComponentsSeparator = @".";
+
+  NSMutableArray<NSString *> *bundleIDComponents =
+      [[bundleIdentifier componentsSeparatedByString:bundleIDComponentsSeparator] mutableCopy];
+  [bundleIDComponents removeLastObject];
+
+  return [bundleIDComponents componentsJoinedByString:bundleIDComponentsSeparator];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponent.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponent.m
new file mode 100644
index 0000000..9c1fbed
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponent.m	
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Private/FIRComponent.h"
+
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+#import "FirebaseCore/Sources/Private/FIRDependency.h"
+
+@interface FIRComponent ()
+
+- (instancetype)initWithProtocol:(Protocol *)protocol
+             instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                    dependencies:(NSArray<FIRDependency *> *)dependencies
+                   creationBlock:(FIRComponentCreationBlock)creationBlock;
+
+@end
+
+@implementation FIRComponent
+
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                        creationBlock:(FIRComponentCreationBlock)creationBlock {
+  return [[FIRComponent alloc] initWithProtocol:protocol
+                            instantiationTiming:FIRInstantiationTimingLazy
+                                   dependencies:@[]
+                                  creationBlock:creationBlock];
+}
+
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                  instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                         dependencies:(NSArray<FIRDependency *> *)dependencies
+                        creationBlock:(FIRComponentCreationBlock)creationBlock {
+  return [[FIRComponent alloc] initWithProtocol:protocol
+                            instantiationTiming:instantiationTiming
+                                   dependencies:dependencies
+                                  creationBlock:creationBlock];
+}
+
+- (instancetype)initWithProtocol:(Protocol *)protocol
+             instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                    dependencies:(NSArray<FIRDependency *> *)dependencies
+                   creationBlock:(FIRComponentCreationBlock)creationBlock {
+  self = [super init];
+  if (self) {
+    _protocol = protocol;
+    _instantiationTiming = instantiationTiming;
+    _dependencies = [dependencies copy];
+    _creationBlock = creationBlock;
+  }
+  return self;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainer.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainer.m
new file mode 100644
index 0000000..bbe8878
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainer.m	
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRComponent.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRComponentContainer ()
+
+/// The dictionary of components that are registered for a particular app. The key is an `NSString`
+/// of the protocol.
+@property(nonatomic, strong) NSMutableDictionary<NSString *, FIRComponentCreationBlock> *components;
+
+/// Cached instances of components that requested to be cached.
+@property(nonatomic, strong) NSMutableDictionary<NSString *, id> *cachedInstances;
+
+/// Protocols of components that have requested to be eagerly instantiated.
+@property(nonatomic, strong, nullable) NSMutableArray<Protocol *> *eagerProtocolsToInstantiate;
+
+@end
+
+@implementation FIRComponentContainer
+
+// Collection of all classes that register to provide components.
+static NSMutableSet<Class> *sFIRComponentRegistrants;
+
+#pragma mark - Public Registration
+
++ (void)registerAsComponentRegistrant:(Class<FIRLibrary>)klass {
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sFIRComponentRegistrants = [[NSMutableSet<Class> alloc] init];
+  });
+
+  [self registerAsComponentRegistrant:klass inSet:sFIRComponentRegistrants];
+}
+
++ (void)registerAsComponentRegistrant:(Class<FIRLibrary>)klass
+                                inSet:(NSMutableSet<Class> *)allRegistrants {
+  [allRegistrants addObject:klass];
+}
+
+#pragma mark - Internal Initialization
+
+- (instancetype)initWithApp:(FIRApp *)app {
+  return [self initWithApp:app registrants:sFIRComponentRegistrants];
+}
+
+- (instancetype)initWithApp:(FIRApp *)app registrants:(NSMutableSet<Class> *)allRegistrants {
+  self = [super init];
+  if (self) {
+    _app = app;
+    _cachedInstances = [NSMutableDictionary<NSString *, id> dictionary];
+    _components = [NSMutableDictionary<NSString *, FIRComponentCreationBlock> dictionary];
+
+    [self populateComponentsFromRegisteredClasses:allRegistrants forApp:app];
+  }
+  return self;
+}
+
+- (void)populateComponentsFromRegisteredClasses:(NSSet<Class> *)classes forApp:(FIRApp *)app {
+  // Keep track of any components that need to eagerly instantiate after all components are added.
+  self.eagerProtocolsToInstantiate = [[NSMutableArray alloc] init];
+
+  // Loop through the verified component registrants and populate the components array.
+  for (Class<FIRLibrary> klass in classes) {
+    // Loop through all the components being registered and store them as appropriate.
+    // Classes which do not provide functionality should use a dummy FIRComponentRegistrant
+    // protocol.
+    for (FIRComponent *component in [klass componentsToRegister]) {
+      // Check if the component has been registered before, and error out if so.
+      NSString *protocolName = NSStringFromProtocol(component.protocol);
+      if (self.components[protocolName]) {
+        FIRLogError(kFIRLoggerCore, @"I-COR000029",
+                    @"Attempted to register protocol %@, but it already has an implementation.",
+                    protocolName);
+        continue;
+      }
+
+      // Store the creation block for later usage.
+      self.components[protocolName] = component.creationBlock;
+
+      // Queue any protocols that should be eagerly instantiated. Don't instantiate them yet
+      // because they could depend on other components that haven't been added to the components
+      // array yet.
+      BOOL shouldInstantiateEager =
+          (component.instantiationTiming == FIRInstantiationTimingAlwaysEager);
+      BOOL shouldInstantiateDefaultEager =
+          (component.instantiationTiming == FIRInstantiationTimingEagerInDefaultApp &&
+           [app isDefaultApp]);
+      if (shouldInstantiateEager || shouldInstantiateDefaultEager) {
+        [self.eagerProtocolsToInstantiate addObject:component.protocol];
+      }
+    }
+  }
+}
+
+#pragma mark - Instance Creation
+
+- (void)instantiateEagerComponents {
+  // After all components are registered, instantiate the ones that are requesting eager
+  // instantiation.
+  @synchronized(self) {
+    for (Protocol *protocol in self.eagerProtocolsToInstantiate) {
+      // Get an instance for the protocol, which will instantiate it since it couldn't have been
+      // cached yet. Ignore the instance coming back since we don't need it.
+      __unused id unusedInstance = [self instanceForProtocol:protocol];
+    }
+
+    // All eager instantiation is complete, clear the stored property now.
+    self.eagerProtocolsToInstantiate = nil;
+  }
+}
+
+/// Instantiate an instance of a class that conforms to the specified protocol.
+/// This will:
+///   - Call the block to create an instance if possible,
+///   - Validate that the instance returned conforms to the protocol it claims to,
+///   - Cache the instance if the block requests it
+///
+/// Note that this method assumes the caller already has @sychronized on self.
+- (nullable id)instantiateInstanceForProtocol:(Protocol *)protocol
+                                    withBlock:(FIRComponentCreationBlock)creationBlock {
+  if (!creationBlock) {
+    return nil;
+  }
+
+  // Create an instance using the creation block.
+  BOOL shouldCache = NO;
+  id instance = creationBlock(self, &shouldCache);
+  if (!instance) {
+    return nil;
+  }
+
+  // An instance was created, validate that it conforms to the protocol it claims to.
+  NSString *protocolName = NSStringFromProtocol(protocol);
+  if (![instance conformsToProtocol:protocol]) {
+    FIRLogError(kFIRLoggerCore, @"I-COR000030",
+                @"An instance conforming to %@ was requested, but the instance provided does not "
+                @"conform to the protocol",
+                protocolName);
+  }
+
+  // The instance is ready to be returned, but check if it should be cached first before returning.
+  if (shouldCache) {
+    self.cachedInstances[protocolName] = instance;
+  }
+
+  return instance;
+}
+
+#pragma mark - Internal Retrieval
+
+- (nullable id)instanceForProtocol:(Protocol *)protocol {
+  // Check if there is a cached instance, and return it if so.
+  NSString *protocolName = NSStringFromProtocol(protocol);
+
+  id cachedInstance;
+  @synchronized(self) {
+    cachedInstance = self.cachedInstances[protocolName];
+    if (!cachedInstance) {
+      // Use the creation block to instantiate an instance and return it.
+      FIRComponentCreationBlock creationBlock = self.components[protocolName];
+      cachedInstance = [self instantiateInstanceForProtocol:protocol withBlock:creationBlock];
+    }
+  }
+  return cachedInstance;
+}
+
+#pragma mark - Lifecycle
+
+- (void)removeAllCachedInstances {
+  @synchronized(self) {
+    // Loop through the cache and notify each instance that is a maintainer to clean up after
+    // itself.
+    for (id instance in self.cachedInstances.allValues) {
+      if ([instance conformsToProtocol:@protocol(FIRComponentLifecycleMaintainer)] &&
+          [instance respondsToSelector:@selector(appWillBeDeleted:)]) {
+        [instance appWillBeDeleted:self.app];
+      }
+    }
+
+    // Empty the cache.
+    [self.cachedInstances removeAllObjects];
+  }
+}
+
+- (void)removeAllComponents {
+  @synchronized(self) {
+    [self.components removeAllObjects];
+  }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainerInternal.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainerInternal.h
new file mode 100644
index 0000000..7e76413
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentContainerInternal.h	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <Foundation/Foundation.h>
+
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+
+@class FIRApp;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRComponentContainer (Private)
+
+/// Initializes a container for a given app. This should only be called by the app itself.
+- (instancetype)initWithApp:(FIRApp *)app;
+
+/// Retrieves an instance that conforms to the specified protocol. This will return `nil` if the
+/// protocol wasn't registered, or if the instance couldn't be instantiated for the provided app.
+- (nullable id)instanceForProtocol:(Protocol *)protocol NS_SWIFT_NAME(instance(for:));
+
+/// Instantiates all the components that have registered as "eager" after initialization.
+- (void)instantiateEagerComponents;
+
+/// Remove all of the cached instances stored and allow them to clean up after themselves.
+- (void)removeAllCachedInstances;
+
+/// Removes all the components. After calling this method no new instances will be created.
+- (void)removeAllComponents;
+
+/// Register a class to provide components for the interoperability system. The class should conform
+/// to `FIRComponentRegistrant` and provide an array of `FIRComponent` objects.
++ (void)registerAsComponentRegistrant:(Class<FIRLibrary>)klass;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentType.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentType.m
new file mode 100644
index 0000000..9051336
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRComponentType.m	
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Private/FIRComponentType.h"
+
+#import "FirebaseCore/Sources/FIRComponentContainerInternal.h"
+
+@implementation FIRComponentType
+
++ (id)instanceForProtocol:(Protocol *)protocol inContainer:(FIRComponentContainer *)container {
+  // Forward the call to the container.
+  return [container instanceForProtocol:protocol];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfiguration.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfiguration.m
new file mode 100644
index 0000000..83b3248
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfiguration.m	
@@ -0,0 +1,46 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/FIRConfigurationInternal.h"
+
+#import "FirebaseCore/Sources/FIRAnalyticsConfiguration.h"
+
+extern void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel);
+
+@implementation FIRConfiguration
+
++ (instancetype)sharedInstance {
+  static FIRConfiguration *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FIRConfiguration alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _analyticsConfiguration = [FIRAnalyticsConfiguration sharedInstance];
+  }
+  return self;
+}
+
+- (void)setLoggerLevel:(FIRLoggerLevel)loggerLevel {
+  NSAssert(loggerLevel <= FIRLoggerLevelMax && loggerLevel >= FIRLoggerLevelMin,
+           @"Invalid logger level, %ld", (long)loggerLevel);
+  FIRSetLoggerLevel(loggerLevel);
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfigurationInternal.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfigurationInternal.h
new file mode 100644
index 0000000..9361e73
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRConfigurationInternal.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRConfiguration.h"
+
+@class FIRAnalyticsConfiguration;
+
+@interface FIRConfiguration ()
+
+/**
+ * The configuration class for Firebase Analytics. This should be removed once the logic for
+ * enabling and disabling Analytics is moved to Analytics.
+ */
+@property(nonatomic, readwrite) FIRAnalyticsConfiguration *analyticsConfiguration;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRCoreDiagnosticsConnector.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRCoreDiagnosticsConnector.m
new file mode 100644
index 0000000..db54936
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRCoreDiagnosticsConnector.m	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h"
+
+#import "Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h"
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIROptions.h"
+
+#import "FirebaseCore/Sources/FIRDiagnosticsData.h"
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
+
+// Define the interop class symbol declared as an extern in FIRCoreDiagnosticsInterop.
+Class<FIRCoreDiagnosticsInterop> FIRCoreDiagnosticsImplementation;
+
+@implementation FIRCoreDiagnosticsConnector
+
++ (void)initialize {
+  if (!FIRCoreDiagnosticsImplementation) {
+    FIRCoreDiagnosticsImplementation = NSClassFromString(@"FIRCoreDiagnostics");
+    if (FIRCoreDiagnosticsImplementation) {
+      NSAssert([FIRCoreDiagnosticsImplementation
+                   conformsToProtocol:@protocol(FIRCoreDiagnosticsInterop)],
+               @"If FIRCoreDiagnostics is implemented, it must conform to the interop protocol.");
+      NSAssert(
+          [FIRCoreDiagnosticsImplementation respondsToSelector:@selector(sendDiagnosticsData:)],
+          @"If FIRCoreDiagnostics is implemented, it must implement +sendDiagnosticsData.");
+    }
+  }
+}
+
++ (void)logCoreTelemetryWithOptions:(FIROptions *)options {
+  if (FIRCoreDiagnosticsImplementation) {
+    FIRDiagnosticsData *diagnosticsData = [[FIRDiagnosticsData alloc] init];
+    [diagnosticsData insertValue:@(YES) forKey:kFIRCDIsDataCollectionDefaultEnabledKey];
+    [diagnosticsData insertValue:[FIRApp firebaseUserAgent] forKey:kFIRCDFirebaseUserAgentKey];
+    [diagnosticsData insertValue:@(FIRConfigTypeCore) forKey:kFIRCDConfigurationTypeKey];
+    [diagnosticsData insertValue:options.googleAppID forKey:kFIRCDGoogleAppIDKey];
+    [diagnosticsData insertValue:options.bundleID forKey:kFIRCDBundleIDKey];
+    [diagnosticsData insertValue:@(options.usingOptionsFromDefaultPlist)
+                          forKey:kFIRCDUsingOptionsFromDefaultPlistKey];
+    [diagnosticsData insertValue:options.libraryVersionID forKey:kFIRCDLibraryVersionIDKey];
+    [FIRCoreDiagnosticsImplementation sendDiagnosticsData:diagnosticsData];
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDependency.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDependency.m
new file mode 100644
index 0000000..e1e2578
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDependency.m	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Private/FIRDependency.h"
+
+@interface FIRDependency ()
+
+- (instancetype)initWithProtocol:(Protocol *)protocol isRequired:(BOOL)required;
+
+@end
+
+@implementation FIRDependency
+
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol {
+  return [[self alloc] initWithProtocol:protocol isRequired:YES];
+}
+
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol isRequired:(BOOL)required {
+  return [[self alloc] initWithProtocol:protocol isRequired:required];
+}
+
+- (instancetype)initWithProtocol:(Protocol *)protocol isRequired:(BOOL)required {
+  self = [super init];
+  if (self) {
+    _protocol = protocol;
+    _isRequired = required;
+  }
+  return self;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.h
new file mode 100644
index 0000000..5b5ff8a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Implements the FIRCoreDiagnosticsData protocol to log diagnostics data. */
+@interface FIRDiagnosticsData : NSObject <FIRCoreDiagnosticsData>
+
+/** Inserts values into the diagnosticObjects dictionary if the value isn't nil.
+ *
+ * @param value The value to insert if it's not nil.
+ * @param key The key to associate it with.
+ */
+- (void)insertValue:(nullable id)value forKey:(NSString *)key;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.m
new file mode 100644
index 0000000..0beed25
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRDiagnosticsData.m	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/FIRDiagnosticsData.h"
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRApp.h"
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
+
+@implementation FIRDiagnosticsData {
+  /** Backing ivar for the diagnosticObjects property. */
+  NSMutableDictionary<NSString *, id> *_diagnosticObjects;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _diagnosticObjects = [[NSMutableDictionary alloc] init];
+  }
+  return self;
+}
+
+- (void)insertValue:(nullable id)value forKey:(NSString *)key {
+  if (key) {
+    _diagnosticObjects[key] = value;
+  }
+}
+
+#pragma mark - FIRCoreDiagnosticsData
+
+- (NSDictionary<NSString *, id> *)diagnosticObjects {
+  if (!_diagnosticObjects[kFIRCDllAppsCountKey]) {
+    _diagnosticObjects[kFIRCDllAppsCountKey] = @([FIRApp allApps].count);
+  }
+  if (!_diagnosticObjects[kFIRCDIsDataCollectionDefaultEnabledKey]) {
+    _diagnosticObjects[kFIRCDIsDataCollectionDefaultEnabledKey] =
+        @([[FIRApp defaultApp] isDataCollectionDefaultEnabled]);
+  }
+  if (!_diagnosticObjects[kFIRCDFirebaseUserAgentKey]) {
+    _diagnosticObjects[kFIRCDFirebaseUserAgentKey] = [FIRApp firebaseUserAgent];
+  }
+  return _diagnosticObjects;
+}
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
+- (void)setDiagnosticObjects:(NSDictionary<NSString *, id> *)diagnosticObjects {
+  NSAssert(NO, @"Please use -insertValue:forKey:");
+}
+#pragma clang diagnostic pop
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.h
new file mode 100644
index 0000000..ffb11fb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFirebaseUserAgent : NSObject
+
+/** Returns the firebase user agent which consists of environment part and the components added via
+ * `setValue:forComponent` method. */
+- (NSString *)firebaseUserAgent;
+
+/** Sets value associated with the specified component. If value is `nil` then the component is
+ * removed. */
+- (void)setValue:(nullable NSString *)value forComponent:(NSString *)componentName;
+
+/** Resets manually added components. */
+- (void)reset;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.m
new file mode 100644
index 0000000..04e7566
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRFirebaseUserAgent.m	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/FIRFirebaseUserAgent.h"
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+
+@interface FIRFirebaseUserAgent ()
+
+@property(nonatomic, readonly) NSMutableDictionary<NSString *, NSString *> *valuesByComponent;
+@property(nonatomic, readonly) NSDictionary<NSString *, NSString *> *environmentComponents;
+@property(nonatomic, readonly) NSString *firebaseUserAgent;
+
+@end
+
+@implementation FIRFirebaseUserAgent
+
+@synthesize firebaseUserAgent = _firebaseUserAgent;
+@synthesize environmentComponents = _environmentComponents;
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _valuesByComponent = [[NSMutableDictionary alloc] init];
+  }
+  return self;
+}
+
+- (NSString *)firebaseUserAgent {
+  @synchronized(self) {
+    if (_firebaseUserAgent == nil) {
+      NSMutableDictionary<NSString *, NSString *> *allComponents =
+          [self.valuesByComponent mutableCopy];
+      [allComponents setValuesForKeysWithDictionary:self.environmentComponents];
+
+      __block NSMutableArray<NSString *> *components =
+          [[NSMutableArray<NSString *> alloc] initWithCapacity:self.valuesByComponent.count];
+      [allComponents enumerateKeysAndObjectsUsingBlock:^(
+                         NSString *_Nonnull name, NSString *_Nonnull value, BOOL *_Nonnull stop) {
+        [components addObject:[NSString stringWithFormat:@"%@/%@", name, value]];
+      }];
+      [components sortUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
+      _firebaseUserAgent = [components componentsJoinedByString:@" "];
+    }
+    return _firebaseUserAgent;
+  }
+}
+
+- (void)setValue:(nullable NSString *)value forComponent:(NSString *)componentName {
+  @synchronized(self) {
+    self.valuesByComponent[componentName] = value;
+    // Reset cached user agent string.
+    _firebaseUserAgent = nil;
+  }
+}
+
+- (void)reset {
+  @synchronized(self) {
+    // Reset components.
+    _valuesByComponent = [[[self class] environmentComponents] mutableCopy];
+    // Reset cached user agent string.
+    _firebaseUserAgent = nil;
+  }
+}
+
+#pragma mark - Environment components
+
+- (NSDictionary<NSString *, NSString *> *)environmentComponents {
+  if (_environmentComponents == nil) {
+    _environmentComponents = [[self class] environmentComponents];
+  }
+  return _environmentComponents;
+}
+
++ (NSDictionary<NSString *, NSString *> *)environmentComponents {
+  NSMutableDictionary<NSString *, NSString *> *components = [NSMutableDictionary dictionary];
+
+  NSDictionary<NSString *, id> *info = [[NSBundle mainBundle] infoDictionary];
+  NSString *xcodeVersion = info[@"DTXcodeBuild"];
+  NSString *appleSdkVersion = info[@"DTSDKBuild"];
+  NSString *isFromAppstoreFlagValue = [GULAppEnvironmentUtil isFromAppStore] ? @"true" : @"false";
+
+  components[@"apple-platform"] = [GULAppEnvironmentUtil applePlatform];
+  components[@"apple-sdk"] = appleSdkVersion;
+  components[@"appstore"] = isFromAppstoreFlagValue;
+  components[@"deploy"] = [GULAppEnvironmentUtil deploymentType];
+  components[@"device"] = [GULAppEnvironmentUtil deviceModel];
+  components[@"os-version"] = [GULAppEnvironmentUtil systemVersion];
+  components[@"xcode"] = xcodeVersion;
+
+  return [components copy];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRHeartbeatInfo.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRHeartbeatInfo.m
new file mode 100644
index 0000000..ef6b363
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRHeartbeatInfo.m	
@@ -0,0 +1,72 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/Private/FIRHeartbeatInfo.h"
+#import <GoogleUtilities/GULHeartbeatDateStorable.h>
+#import <GoogleUtilities/GULHeartbeatDateStorage.h>
+#import <GoogleUtilities/GULHeartbeatDateStorageUserDefaults.h>
+#import <GoogleUtilities/GULLogger.h>
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+
+const static long secondsInDay = 86400;
+@implementation FIRHeartbeatInfo : NSObject
+
+/** Updates the storage with the heartbeat information corresponding to this tag.
+ * @param heartbeatTag Tag which could either be sdk specific tag or the global tag.
+ * @return Boolean representing whether the heartbeat needs to be sent for this tag or not.
+ */
++ (BOOL)updateIfNeededHeartbeatDateForTag:(NSString *)heartbeatTag {
+  @synchronized(self) {
+    NSString *const kHeartbeatStorageName = @"HEARTBEAT_INFO_STORAGE";
+    id<GULHeartbeatDateStorable> dataStorage;
+#if TARGET_OS_TV
+    NSUserDefaults *defaults =
+        [[NSUserDefaults alloc] initWithSuiteName:kFirebaseCoreDefaultsSuiteName];
+    dataStorage =
+        [[GULHeartbeatDateStorageUserDefaults alloc] initWithDefaults:defaults
+                                                                  key:kHeartbeatStorageName];
+#else
+    dataStorage = [[GULHeartbeatDateStorage alloc] initWithFileName:kHeartbeatStorageName];
+#endif
+    NSDate *heartbeatTime = [dataStorage heartbeatDateForTag:heartbeatTag];
+    NSDate *currentDate = [NSDate date];
+    if (heartbeatTime != nil) {
+      NSTimeInterval secondsBetween = [currentDate timeIntervalSinceDate:heartbeatTime];
+      if (secondsBetween < secondsInDay) {
+        return false;
+      }
+    }
+    return [dataStorage setHearbeatDate:currentDate forTag:heartbeatTag];
+  }
+}
+
++ (FIRHeartbeatInfoCode)heartbeatCodeForTag:(NSString *)heartbeatTag {
+  NSString *globalTag = @"GLOBAL";
+  BOOL isSdkHeartbeatNeeded = [FIRHeartbeatInfo updateIfNeededHeartbeatDateForTag:heartbeatTag];
+  BOOL isGlobalHeartbeatNeeded = [FIRHeartbeatInfo updateIfNeededHeartbeatDateForTag:globalTag];
+  if (!isSdkHeartbeatNeeded && !isGlobalHeartbeatNeeded) {
+    // Both sdk and global heartbeat not needed.
+    return FIRHeartbeatInfoCodeNone;
+  } else if (isSdkHeartbeatNeeded && !isGlobalHeartbeatNeeded) {
+    // Only SDK heartbeat needed.
+    return FIRHeartbeatInfoCodeSDK;
+  } else if (!isSdkHeartbeatNeeded && isGlobalHeartbeatNeeded) {
+    // Only global heartbeat needed.
+    return FIRHeartbeatInfoCodeGlobal;
+  } else {
+    // Both sdk and global heartbeat are needed.
+    return FIRHeartbeatInfoCodeCombined;
+  }
+}
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRLogger.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRLogger.m
new file mode 100644
index 0000000..6707a96
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRLogger.m	
@@ -0,0 +1,174 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+#import <GoogleUtilities/GULLogger.h>
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRLoggerLevel.h"
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h"
+
+FIRLoggerService kFIRLoggerCore = @"[Firebase/Core]";
+
+// All the FIRLoggerService definitions should be migrated to clients. Do not add new ones!
+FIRLoggerService kFIRLoggerAnalytics = @"[Firebase/Analytics]";
+FIRLoggerService kFIRLoggerCrash = @"[Firebase/Crash]";
+FIRLoggerService kFIRLoggerRemoteConfig = @"[Firebase/RemoteConfig]";
+
+/// Arguments passed on launch.
+NSString *const kFIRDisableDebugModeApplicationArgument = @"-FIRDebugDisabled";
+NSString *const kFIREnableDebugModeApplicationArgument = @"-FIRDebugEnabled";
+NSString *const kFIRLoggerForceSDTERRApplicationArgument = @"-FIRLoggerForceSTDERR";
+
+/// Key for the debug mode bit in NSUserDefaults.
+NSString *const kFIRPersistedDebugModeKey = @"/google/firebase/debug_mode";
+
+/// NSUserDefaults that should be used to store and read variables. If nil, `standardUserDefaults`
+/// will be used.
+static NSUserDefaults *sFIRLoggerUserDefaults;
+
+static dispatch_once_t sFIRLoggerOnceToken;
+
+// The sFIRAnalyticsDebugMode flag is here to support the -FIRDebugEnabled/-FIRDebugDisabled
+// flags used by Analytics. Users who use those flags expect Analytics to log verbosely,
+// while the rest of Firebase logs at the default level. This flag is introduced to support
+// that behavior.
+static BOOL sFIRAnalyticsDebugMode;
+
+#ifdef DEBUG
+/// The regex pattern for the message code.
+static NSString *const kMessageCodePattern = @"^I-[A-Z]{3}[0-9]{6}$";
+static NSRegularExpression *sMessageCodeRegex;
+#endif
+
+void FIRLoggerInitializeASL(void) {
+  dispatch_once(&sFIRLoggerOnceToken, ^{
+    // Register Firebase Version with GULLogger.
+    GULLoggerRegisterVersion(FIRFirebaseVersion());
+
+    // Override the aslOptions to ASL_OPT_STDERR if the override argument is passed in.
+    NSArray *arguments = [NSProcessInfo processInfo].arguments;
+    BOOL overrideSTDERR = [arguments containsObject:kFIRLoggerForceSDTERRApplicationArgument];
+
+    // Use the standard NSUserDefaults if it hasn't been explicitly set.
+    if (sFIRLoggerUserDefaults == nil) {
+      sFIRLoggerUserDefaults = [NSUserDefaults standardUserDefaults];
+    }
+
+    BOOL forceDebugMode = NO;
+    BOOL debugMode = [sFIRLoggerUserDefaults boolForKey:kFIRPersistedDebugModeKey];
+    if ([arguments containsObject:kFIRDisableDebugModeApplicationArgument]) {  // Default mode
+      [sFIRLoggerUserDefaults removeObjectForKey:kFIRPersistedDebugModeKey];
+    } else if ([arguments containsObject:kFIREnableDebugModeApplicationArgument] ||
+               debugMode) {  // Debug mode
+      [sFIRLoggerUserDefaults setBool:YES forKey:kFIRPersistedDebugModeKey];
+      forceDebugMode = YES;
+    }
+    GULLoggerInitializeASL();
+    if (overrideSTDERR) {
+      GULLoggerEnableSTDERR();
+    }
+    if (forceDebugMode) {
+      GULLoggerForceDebug();
+    }
+  });
+}
+
+__attribute__((no_sanitize("thread"))) void FIRSetAnalyticsDebugMode(BOOL analyticsDebugMode) {
+  sFIRAnalyticsDebugMode = analyticsDebugMode;
+}
+
+void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel) {
+  FIRLoggerInitializeASL();
+  GULSetLoggerLevel((GULLoggerLevel)loggerLevel);
+}
+
+#ifdef DEBUG
+void FIRResetLogger(void) {
+  extern void GULResetLogger(void);
+  sFIRLoggerOnceToken = 0;
+  [sFIRLoggerUserDefaults removeObjectForKey:kFIRPersistedDebugModeKey];
+  sFIRLoggerUserDefaults = nil;
+  GULResetLogger();
+}
+
+void FIRSetLoggerUserDefaults(NSUserDefaults *defaults) {
+  sFIRLoggerUserDefaults = defaults;
+}
+#endif
+
+/**
+ * Check if the level is high enough to be loggable.
+ *
+ * Analytics can override the log level with an intentional race condition.
+ * Add the attribute to get a clean thread sanitizer run.
+ */
+__attribute__((no_sanitize("thread"))) BOOL FIRIsLoggableLevel(FIRLoggerLevel loggerLevel,
+                                                               BOOL analyticsComponent) {
+  FIRLoggerInitializeASL();
+  if (sFIRAnalyticsDebugMode && analyticsComponent) {
+    return YES;
+  }
+  return GULIsLoggableLevel((GULLoggerLevel)loggerLevel);
+}
+
+void FIRLogBasic(FIRLoggerLevel level,
+                 FIRLoggerService service,
+                 NSString *messageCode,
+                 NSString *message,
+                 va_list args_ptr) {
+  FIRLoggerInitializeASL();
+  GULLogBasic((GULLoggerLevel)level, service,
+              sFIRAnalyticsDebugMode && [kFIRLoggerAnalytics isEqualToString:service], messageCode,
+              message, args_ptr);
+}
+
+/**
+ * Generates the logging functions using macros.
+ *
+ * Calling FIRLogError(kFIRLoggerCore, @"I-COR000001", @"Configure %@ failed.", @"blah") shows:
+ * yyyy-mm-dd hh:mm:ss.SSS sender[PID] <Error> [Firebase/Core][I-COR000001] Configure blah failed.
+ * Calling FIRLogDebug(kFIRLoggerCore, @"I-COR000001", @"Configure succeed.") shows:
+ * yyyy-mm-dd hh:mm:ss.SSS sender[PID] <Debug> [Firebase/Core][I-COR000001] Configure succeed.
+ */
+#define FIR_LOGGING_FUNCTION(level)                                                             \
+  void FIRLog##level(FIRLoggerService service, NSString *messageCode, NSString *message, ...) { \
+    va_list args_ptr;                                                                           \
+    va_start(args_ptr, message);                                                                \
+    FIRLogBasic(FIRLoggerLevel##level, service, messageCode, message, args_ptr);                \
+    va_end(args_ptr);                                                                           \
+  }
+
+FIR_LOGGING_FUNCTION(Error)
+FIR_LOGGING_FUNCTION(Warning)
+FIR_LOGGING_FUNCTION(Notice)
+FIR_LOGGING_FUNCTION(Info)
+FIR_LOGGING_FUNCTION(Debug)
+
+#undef FIR_MAKE_LOGGER
+
+#pragma mark - FIRLoggerWrapper
+
+@implementation FIRLoggerWrapper
+
++ (void)logWithLevel:(FIRLoggerLevel)level
+         withService:(FIRLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args {
+  FIRLogBasic(level, service, messageCode, message, args);
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIROptions.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIROptions.m
new file mode 100644
index 0000000..e66b4e6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIROptions.m	
@@ -0,0 +1,498 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "FirebaseCore/Sources/FIRBundleUtil.h"
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h"
+
+// Keys for the strings in the plist file.
+NSString *const kFIRAPIKey = @"API_KEY";
+NSString *const kFIRTrackingID = @"TRACKING_ID";
+NSString *const kFIRGoogleAppID = @"GOOGLE_APP_ID";
+NSString *const kFIRClientID = @"CLIENT_ID";
+NSString *const kFIRGCMSenderID = @"GCM_SENDER_ID";
+NSString *const kFIRAndroidClientID = @"ANDROID_CLIENT_ID";
+NSString *const kFIRDatabaseURL = @"DATABASE_URL";
+NSString *const kFIRStorageBucket = @"STORAGE_BUCKET";
+// The key to locate the expected bundle identifier in the plist file.
+NSString *const kFIRBundleID = @"BUNDLE_ID";
+// The key to locate the project identifier in the plist file.
+NSString *const kFIRProjectID = @"PROJECT_ID";
+
+NSString *const kFIRIsMeasurementEnabled = @"IS_MEASUREMENT_ENABLED";
+NSString *const kFIRIsAnalyticsCollectionEnabled = @"FIREBASE_ANALYTICS_COLLECTION_ENABLED";
+NSString *const kFIRIsAnalyticsCollectionDeactivated = @"FIREBASE_ANALYTICS_COLLECTION_DEACTIVATED";
+
+NSString *const kFIRIsAnalyticsEnabled = @"IS_ANALYTICS_ENABLED";
+NSString *const kFIRIsSignInEnabled = @"IS_SIGNIN_ENABLED";
+
+// Library version ID formatted like:
+// @"5"     // Major version (one or more digits)
+// @"04"    // Minor version (exactly 2 digits)
+// @"01"    // Build number (exactly 2 digits)
+// @"000";  // Fixed "000"
+NSString *kFIRLibraryVersionID;
+
+// Plist file name.
+NSString *const kServiceInfoFileName = @"GoogleService-Info";
+// Plist file type.
+NSString *const kServiceInfoFileType = @"plist";
+
+// Exception raised from attempting to modify a FIROptions after it's been copied to a FIRApp.
+NSString *const kFIRExceptionBadModification =
+    @"Attempted to modify options after it's set on FIRApp. Please modify all properties before "
+    @"initializing FIRApp.";
+
+@interface FIROptions ()
+
+/**
+ * This property maintains the actual configuration key-value pairs.
+ */
+@property(nonatomic, readwrite) NSMutableDictionary *optionsDictionary;
+
+/**
+ * Calls `analyticsOptionsDictionaryWithInfoDictionary:` using [NSBundle mainBundle].infoDictionary.
+ * It combines analytics options from both the infoDictionary and the GoogleService-Info.plist.
+ * Values which are present in the main plist override values from the GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) NSDictionary *analyticsOptionsDictionary;
+
+/**
+ * Combination of analytics options from both the infoDictionary and the GoogleService-Info.plist.
+ * Values which are present in the infoDictionary override values from the GoogleService-Info.plist.
+ */
+- (NSDictionary *)analyticsOptionsDictionaryWithInfoDictionary:(NSDictionary *)infoDictionary;
+
+/**
+ * Throw exception if editing is locked when attempting to modify an option.
+ */
+- (void)checkEditingLocked;
+
+@end
+
+@implementation FIROptions {
+  /// Backing variable for self.analyticsOptionsDictionary.
+  NSDictionary *_analyticsOptionsDictionary;
+}
+
+static FIROptions *sDefaultOptions = nil;
+static NSDictionary *sDefaultOptionsDictionary = nil;
+static dispatch_once_t sDefaultOptionsOnceToken;
+static dispatch_once_t sDefaultOptionsDictionaryOnceToken;
+
+#pragma mark - Public only for internal class methods
+
++ (FIROptions *)defaultOptions {
+  dispatch_once(&sDefaultOptionsOnceToken, ^{
+    NSDictionary *defaultOptionsDictionary = [self defaultOptionsDictionary];
+    if (defaultOptionsDictionary != nil) {
+      sDefaultOptions =
+          [[FIROptions alloc] initInternalWithOptionsDictionary:defaultOptionsDictionary];
+    }
+  });
+
+  return sDefaultOptions;
+}
+
+#pragma mark - Private class methods
+
++ (NSDictionary *)defaultOptionsDictionary {
+  dispatch_once(&sDefaultOptionsDictionaryOnceToken, ^{
+    NSString *plistFilePath = [FIROptions plistFilePathWithName:kServiceInfoFileName];
+    if (plistFilePath == nil) {
+      return;
+    }
+    sDefaultOptionsDictionary = [NSDictionary dictionaryWithContentsOfFile:plistFilePath];
+    if (sDefaultOptionsDictionary == nil) {
+      FIRLogError(kFIRLoggerCore, @"I-COR000011",
+                  @"The configuration file is not a dictionary: "
+                  @"'%@.%@'.",
+                  kServiceInfoFileName, kServiceInfoFileType);
+    }
+  });
+
+  return sDefaultOptionsDictionary;
+}
+
+// Returns the path of the plist file with a given file name.
++ (NSString *)plistFilePathWithName:(NSString *)fileName {
+  NSArray *bundles = [FIRBundleUtil relevantBundles];
+  NSString *plistFilePath =
+      [FIRBundleUtil optionsDictionaryPathWithResourceName:fileName
+                                               andFileType:kServiceInfoFileType
+                                                 inBundles:bundles];
+  if (plistFilePath == nil) {
+    FIRLogError(kFIRLoggerCore, @"I-COR000012", @"Could not locate configuration file: '%@.%@'.",
+                fileName, kServiceInfoFileType);
+  }
+  return plistFilePath;
+}
+
++ (void)resetDefaultOptions {
+  sDefaultOptions = nil;
+  sDefaultOptionsDictionary = nil;
+  sDefaultOptionsOnceToken = 0;
+  sDefaultOptionsDictionaryOnceToken = 0;
+}
+
+#pragma mark - Private instance methods
+
+- (instancetype)initInternalWithOptionsDictionary:(NSDictionary *)optionsDictionary {
+  self = [super init];
+  if (self) {
+    _optionsDictionary = [optionsDictionary mutableCopy];
+    _usingOptionsFromDefaultPlist = YES;
+  }
+  return self;
+}
+
+- (id)copyWithZone:(NSZone *)zone {
+  FIROptions *newOptions = [(FIROptions *)[[self class] allocWithZone:zone]
+      initInternalWithOptionsDictionary:self.optionsDictionary];
+  if (newOptions) {
+    newOptions.deepLinkURLScheme = self.deepLinkURLScheme;
+    newOptions.appGroupID = self.appGroupID;
+    newOptions.editingLocked = self.isEditingLocked;
+    newOptions.usingOptionsFromDefaultPlist = self.usingOptionsFromDefaultPlist;
+  }
+  return newOptions;
+}
+
+#pragma mark - Public instance methods
+
+- (instancetype)init {
+  // Unavailable.
+  [self doesNotRecognizeSelector:_cmd];
+  return nil;
+}
+
+- (instancetype)initWithContentsOfFile:(NSString *)plistPath {
+  self = [super init];
+  if (self) {
+    if (plistPath == nil) {
+      FIRLogError(kFIRLoggerCore, @"I-COR000013", @"The plist file path is nil.");
+      return nil;
+    }
+    _optionsDictionary = [[NSDictionary dictionaryWithContentsOfFile:plistPath] mutableCopy];
+    if (_optionsDictionary == nil) {
+      FIRLogError(kFIRLoggerCore, @"I-COR000014",
+                  @"The configuration file at %@ does not exist or "
+                  @"is not a well-formed plist file.",
+                  plistPath);
+      return nil;
+    }
+    // TODO: Do we want to validate the dictionary here? It says we do that already in
+    // the public header.
+  }
+  return self;
+}
+
+- (instancetype)initWithGoogleAppID:(NSString *)googleAppID GCMSenderID:(NSString *)GCMSenderID {
+  self = [super init];
+  if (self) {
+    NSMutableDictionary *mutableOptionsDict = [NSMutableDictionary dictionary];
+    [mutableOptionsDict setValue:googleAppID forKey:kFIRGoogleAppID];
+    [mutableOptionsDict setValue:GCMSenderID forKey:kFIRGCMSenderID];
+    [mutableOptionsDict setValue:[[NSBundle mainBundle] bundleIdentifier] forKey:kFIRBundleID];
+    self.optionsDictionary = mutableOptionsDict;
+  }
+  return self;
+}
+
+- (NSString *)APIKey {
+  return self.optionsDictionary[kFIRAPIKey];
+}
+
+- (void)checkEditingLocked {
+  if (self.isEditingLocked) {
+    [NSException raise:kFirebaseCoreErrorDomain format:kFIRExceptionBadModification];
+  }
+}
+
+- (void)setAPIKey:(NSString *)APIKey {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRAPIKey] = [APIKey copy];
+}
+
+- (NSString *)clientID {
+  return self.optionsDictionary[kFIRClientID];
+}
+
+- (void)setClientID:(NSString *)clientID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRClientID] = [clientID copy];
+}
+
+- (NSString *)trackingID {
+  return self.optionsDictionary[kFIRTrackingID];
+}
+
+- (void)setTrackingID:(NSString *)trackingID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRTrackingID] = [trackingID copy];
+}
+
+- (NSString *)GCMSenderID {
+  return self.optionsDictionary[kFIRGCMSenderID];
+}
+
+- (void)setGCMSenderID:(NSString *)GCMSenderID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRGCMSenderID] = [GCMSenderID copy];
+}
+
+- (NSString *)projectID {
+  return self.optionsDictionary[kFIRProjectID];
+}
+
+- (void)setProjectID:(NSString *)projectID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRProjectID] = [projectID copy];
+}
+
+- (NSString *)androidClientID {
+  return self.optionsDictionary[kFIRAndroidClientID];
+}
+
+- (void)setAndroidClientID:(NSString *)androidClientID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRAndroidClientID] = [androidClientID copy];
+}
+
+- (NSString *)googleAppID {
+  return self.optionsDictionary[kFIRGoogleAppID];
+}
+
+- (void)setGoogleAppID:(NSString *)googleAppID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRGoogleAppID] = [googleAppID copy];
+}
+
+- (NSString *)libraryVersionID {
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    // The unit tests are set up to catch anything that does not properly convert.
+    NSString *version = FIRFirebaseVersion();
+    NSArray *components = [version componentsSeparatedByString:@"."];
+    NSString *major = [components objectAtIndex:0];
+    NSString *minor = [NSString stringWithFormat:@"%02d", [[components objectAtIndex:1] intValue]];
+    NSString *patch = [NSString stringWithFormat:@"%02d", [[components objectAtIndex:2] intValue]];
+    kFIRLibraryVersionID = [NSString stringWithFormat:@"%@%@%@000", major, minor, patch];
+  });
+  return kFIRLibraryVersionID;
+}
+
+- (void)setLibraryVersionID:(NSString *)libraryVersionID {
+  _optionsDictionary[kFIRLibraryVersionID] = [libraryVersionID copy];
+}
+
+- (NSString *)databaseURL {
+  return self.optionsDictionary[kFIRDatabaseURL];
+}
+
+- (void)setDatabaseURL:(NSString *)databaseURL {
+  [self checkEditingLocked];
+
+  _optionsDictionary[kFIRDatabaseURL] = [databaseURL copy];
+}
+
+- (NSString *)storageBucket {
+  return self.optionsDictionary[kFIRStorageBucket];
+}
+
+- (void)setStorageBucket:(NSString *)storageBucket {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRStorageBucket] = [storageBucket copy];
+}
+
+- (void)setDeepLinkURLScheme:(NSString *)deepLinkURLScheme {
+  [self checkEditingLocked];
+  _deepLinkURLScheme = [deepLinkURLScheme copy];
+}
+
+- (NSString *)bundleID {
+  return self.optionsDictionary[kFIRBundleID];
+}
+
+- (void)setBundleID:(NSString *)bundleID {
+  [self checkEditingLocked];
+  _optionsDictionary[kFIRBundleID] = [bundleID copy];
+}
+
+- (void)setAppGroupID:(NSString *)appGroupID {
+  [self checkEditingLocked];
+  _appGroupID = [appGroupID copy];
+}
+
+#pragma mark - Equality
+
+- (BOOL)isEqual:(id)object {
+  if (!object || ![object isKindOfClass:[FIROptions class]]) {
+    return NO;
+  }
+
+  return [self isEqualToOptions:(FIROptions *)object];
+}
+
+- (BOOL)isEqualToOptions:(FIROptions *)options {
+  // Skip any non-FIROptions classes.
+  if (![options isKindOfClass:[FIROptions class]]) {
+    return NO;
+  }
+
+  // Check the internal dictionary and custom properties for differences.
+  if (![options.optionsDictionary isEqualToDictionary:self.optionsDictionary]) {
+    return NO;
+  }
+
+  // Validate extra properties not contained in the dictionary. Only validate it if one of the
+  // objects has the property set.
+  if ((options.deepLinkURLScheme != nil || self.deepLinkURLScheme != nil) &&
+      ![options.deepLinkURLScheme isEqualToString:self.deepLinkURLScheme]) {
+    return NO;
+  }
+
+  if ((options.appGroupID != nil || self.appGroupID != nil) &&
+      ![options.appGroupID isEqualToString:self.appGroupID]) {
+    return NO;
+  }
+
+  // Validate the Analytics options haven't changed with the Info.plist.
+  if (![options.analyticsOptionsDictionary isEqualToDictionary:self.analyticsOptionsDictionary]) {
+    return NO;
+  }
+
+  // We don't care about the `editingLocked` or `usingOptionsFromDefaultPlist` properties since
+  // those relate to lifecycle and construction, we only care if the contents of the options
+  // themselves are equal.
+  return YES;
+}
+
+- (NSUInteger)hash {
+  // This is strongly recommended for any object that implements a custom `isEqual:` method to
+  // ensure that dictionary and set behavior matches other `isEqual:` checks.
+  // Note: `self.analyticsOptionsDictionary` was left out here since it solely relies on the
+  // contents of the main bundle's `Info.plist`. We should avoid reading that file and the contents
+  // should be identical.
+  return self.optionsDictionary.hash ^ self.deepLinkURLScheme.hash ^ self.appGroupID.hash;
+}
+
+#pragma mark - Internal instance methods
+
+- (NSDictionary *)analyticsOptionsDictionaryWithInfoDictionary:(NSDictionary *)infoDictionary {
+  if (_analyticsOptionsDictionary == nil) {
+    NSMutableDictionary *tempAnalyticsOptions = [[NSMutableDictionary alloc] init];
+    NSArray *measurementKeys = @[
+      kFIRIsMeasurementEnabled, kFIRIsAnalyticsCollectionEnabled,
+      kFIRIsAnalyticsCollectionDeactivated
+    ];
+    for (NSString *key in measurementKeys) {
+      id value = infoDictionary[key] ?: self.optionsDictionary[key] ?: nil;
+      if (!value) {
+        continue;
+      }
+      tempAnalyticsOptions[key] = value;
+    }
+    _analyticsOptionsDictionary = tempAnalyticsOptions;
+  }
+  return _analyticsOptionsDictionary;
+}
+
+- (NSDictionary *)analyticsOptionsDictionary {
+  return [self analyticsOptionsDictionaryWithInfoDictionary:[NSBundle mainBundle].infoDictionary];
+}
+
+/**
+ * Whether or not Measurement was enabled. Measurement is enabled unless explicitly disabled in
+ * GoogleService-Info.plist. This uses the old plist flag IS_MEASUREMENT_ENABLED, which should still
+ * be supported.
+ */
+- (BOOL)isMeasurementEnabled {
+  if (self.isAnalyticsCollectionDeactivated) {
+    return NO;
+  }
+  NSNumber *value = self.analyticsOptionsDictionary[kFIRIsMeasurementEnabled];
+  if (value == nil) {
+    // TODO: This could probably be cleaned up since FIROptions shouldn't know about FIRApp or have
+    //       to check if it's the default app. The FIROptions instance can't be modified after
+    //       `+configure` is called, so it's not a good place to copy it either in case the flag is
+    //       changed at runtime.
+
+    // If no values are set for Analytics, fall back to the global collection switch in FIRApp.
+    // Analytics only supports the default FIRApp, so check that first.
+    if (![FIRApp isDefaultAppConfigured]) {
+      return NO;
+    }
+
+    // Fall back to the default app's collection switch when the key is not in the dictionary.
+    return [FIRApp defaultApp].isDataCollectionDefaultEnabled;
+  }
+  return [value boolValue];
+}
+
+- (BOOL)isAnalyticsCollectionExplicitlySet {
+  // If it's de-activated, it classifies as explicity set. If not, it's not a good enough indication
+  // that the developer wants FirebaseAnalytics enabled so continue checking.
+  if (self.isAnalyticsCollectionDeactivated) {
+    return YES;
+  }
+
+  // Check if the current Analytics flag is set.
+  id collectionEnabledObject = self.analyticsOptionsDictionary[kFIRIsAnalyticsCollectionEnabled];
+  if (collectionEnabledObject && [collectionEnabledObject isKindOfClass:[NSNumber class]]) {
+    // It doesn't matter what the value is, it's explicitly set.
+    return YES;
+  }
+
+  // Check if the old measurement flag is set.
+  id measurementEnabledObject = self.analyticsOptionsDictionary[kFIRIsMeasurementEnabled];
+  if (measurementEnabledObject && [measurementEnabledObject isKindOfClass:[NSNumber class]]) {
+    // It doesn't matter what the value is, it's explicitly set.
+    return YES;
+  }
+
+  // No flags are set to explicitly enable or disable FirebaseAnalytics.
+  return NO;
+}
+
+- (BOOL)isAnalyticsCollectionEnabled {
+  if (self.isAnalyticsCollectionDeactivated) {
+    return NO;
+  }
+  NSNumber *value = self.analyticsOptionsDictionary[kFIRIsAnalyticsCollectionEnabled];
+  if (value == nil) {
+    return self.isMeasurementEnabled;  // Fall back to older plist flag.
+  }
+  return [value boolValue];
+}
+
+- (BOOL)isAnalyticsCollectionDeactivated {
+  NSNumber *value = self.analyticsOptionsDictionary[kFIRIsAnalyticsCollectionDeactivated];
+  if (value == nil) {
+    return NO;  // Analytics Collection is not deactivated when the key is not in the dictionary.
+  }
+  return [value boolValue];
+}
+
+- (BOOL)isAnalyticsEnabled {
+  return [self.optionsDictionary[kFIRIsAnalyticsEnabled] boolValue];
+}
+
+- (BOOL)isSignInEnabled {
+  return [self.optionsDictionary[kFIRIsSignInEnabled] boolValue];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRVersion.m b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRVersion.m
new file mode 100644
index 0000000..f458a3a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/FIRVersion.m	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h"
+
+#ifndef Firebase_VERSION
+#error "Firebase_VERSION is not defined: add -DFirebase_VERSION=... to the build invocation"
+#endif
+
+// The following two macros supply the incantation so that the C
+// preprocessor does not try to parse the version as a floating
+// point number. See
+// https://www.guyrutenberg.com/2008/12/20/expanding-macros-into-string-constants-in-c/
+#define STR(x) STR_EXPAND(x)
+#define STR_EXPAND(x) #x
+
+NSString* FIRFirebaseVersion(void) {
+  return @STR(Firebase_VERSION);
+}
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRAppInternal.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRAppInternal.h
new file mode 100644
index 0000000..6c7d723
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRAppInternal.h	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIRApp.h>
+
+@class FIRComponentContainer;
+@protocol FIRLibrary;
+
+/**
+ * The internal interface to FIRApp. This is meant for first-party integrators, who need to receive
+ * FIRApp notifications, log info about the success or failure of their configuration, and access
+ * other internal functionality of FIRApp.
+ *
+ * TODO(b/28296561): Restructure this header.
+ */
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSInteger, FIRConfigType) {
+  FIRConfigTypeCore = 1,
+  FIRConfigTypeSDK = 2,
+};
+
+extern NSString *const kFIRDefaultAppName;
+extern NSString *const kFIRAppReadyToConfigureSDKNotification;
+extern NSString *const kFIRAppDeleteNotification;
+extern NSString *const kFIRAppIsDefaultAppKey;
+extern NSString *const kFIRAppNameKey;
+extern NSString *const kFIRGoogleAppIDKey;
+extern NSString *const kFirebaseCoreErrorDomain;
+
+/** The NSUserDefaults suite name for FirebaseCore, for those storage locations that use it. */
+extern NSString *const kFirebaseCoreDefaultsSuiteName;
+
+/**
+ * The format string for the User Defaults key used for storing the data collection enabled flag.
+ * This includes formatting to append the Firebase App's name.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat;
+
+/**
+ * The plist key used for storing the data collection enabled flag.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledPlistKey;
+
+/** @var FIRAuthStateDidChangeInternalNotification
+ @brief The name of the @c NSNotificationCenter notification which is posted when the auth state
+ changes (e.g. a new token has been produced, a user logs in or out). The object parameter of
+ the notification is a dictionary possibly containing the key:
+ @c FIRAuthStateDidChangeInternalNotificationTokenKey (the new access token.) If it does not
+ contain this key it indicates a sign-out event took place.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotification;
+
+/** @var FIRAuthStateDidChangeInternalNotificationTokenKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new access token.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationTokenKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationAppKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the FIRApp associated with the auth instance.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationAppKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationUIDKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new user's UID (or nil if there is no longer a user signed in).
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationUIDKey;
+
+@interface FIRApp ()
+
+/**
+ * A flag indicating if this is the default app (has the default app name).
+ */
+@property(nonatomic, readonly) BOOL isDefaultApp;
+
+/*
+ * The container of interop SDKs for this app.
+ */
+@property(nonatomic) FIRComponentContainer *container;
+
+/**
+ * Checks if the default app is configured without trying to configure it.
+ */
++ (BOOL)isDefaultAppConfigured;
+
+/**
+ * Registers a given third-party library with the given version number to be reported for
+ * analytics.
+ *
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerLibrary:(nonnull NSString *)name withVersion:(nonnull NSString *)version;
+
+/**
+ * Registers a given internal library to be reported for analytics.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name;
+
+/**
+ * Registers a given internal library with the given version number to be reported for
+ * analytics. This should only be used for non-Firebase libraries that have their own versioning
+ * scheme.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name
+                    withVersion:(nonnull NSString *)version;
+
+/**
+ * A concatenated string representing all the third-party libraries and version numbers.
+ */
++ (NSString *)firebaseUserAgent;
+
+/**
+ * Can be used by the unit tests in eack SDK to reset FIRApp. This method is thread unsafe.
+ */
++ (void)resetApps;
+
+/**
+ * Can be used by the unit tests in each SDK to set customized options.
+ */
+- (instancetype)initInstanceWithName:(NSString *)name options:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponent.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponent.h
new file mode 100644
index 0000000..cb51ee7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponent.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provides a system to clean up cached instances returned from the component system.
+NS_SWIFT_NAME(ComponentLifecycleMaintainer)
+@protocol FIRComponentLifecycleMaintainer
+/// The associated app will be deleted, clean up any resources as they are about to be deallocated.
+- (void)appWillBeDeleted:(FIRApp *)app;
+@end
+
+typedef _Nullable id (^FIRComponentCreationBlock)(FIRComponentContainer *container,
+                                                  BOOL *isCacheable)
+    NS_SWIFT_NAME(ComponentCreationBlock);
+
+@class FIRDependency;
+
+/// Describes the timing of instantiation. Note: new components should default to lazy unless there
+/// is a strong reason to be eager.
+typedef NS_ENUM(NSInteger, FIRInstantiationTiming) {
+  FIRInstantiationTimingLazy,
+  FIRInstantiationTimingAlwaysEager,
+  FIRInstantiationTimingEagerInDefaultApp
+} NS_SWIFT_NAME(InstantiationTiming);
+
+/// A component that can be used from other Firebase SDKs.
+NS_SWIFT_NAME(Component)
+@interface FIRComponent : NSObject
+
+/// The protocol describing functionality provided from the Component.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// The timing of instantiation.
+@property(nonatomic, readonly) FIRInstantiationTiming instantiationTiming;
+
+/// An array of dependencies for the component.
+@property(nonatomic, copy, readonly) NSArray<FIRDependency *> *dependencies;
+
+/// A block to instantiate an instance of the component with the appropriate dependencies.
+@property(nonatomic, copy, readonly) FIRComponentCreationBlock creationBlock;
+
+// There's an issue with long NS_SWIFT_NAMES that causes compilation to fail, disable clang-format
+// for the next two methods.
+// clang-format off
+
+/// Creates a component with no dependencies that will be lazily initialized.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:creationBlock:));
+
+/// Creates a component to be registered with the component container.
+///
+/// @param protocol - The protocol describing functionality provided by the component.
+/// @param instantiationTiming - When the component should be initialized. Use .lazy unless there's
+///                              a good reason to be instantiated earlier.
+/// @param dependencies - Any dependencies the `implementingClass` has, optional or required.
+/// @param creationBlock - A block to instantiate the component with a container, and if
+/// @return A component that can be registered with the component container.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                  instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                         dependencies:(NSArray<FIRDependency *> *)dependencies
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:instantiationTiming:dependencies:creationBlock:));
+
+// clang-format on
+
+/// Unavailable.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentContainer.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentContainer.h
new file mode 100644
index 0000000..af18a93
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentContainer.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A type-safe macro to retrieve a component from a container. This should be used to retrieve
+/// components instead of using the container directly.
+#define FIR_COMPONENT(type, container) \
+  [FIRComponentType<id<type>> instanceForProtocol:@protocol(type) inContainer:container]
+
+@class FIRApp;
+
+/// A container that holds different components that are registered via the
+/// `registerAsComponentRegistrant:` call. These classes should conform to `FIRComponentRegistrant`
+/// in order to properly register components for Core.
+NS_SWIFT_NAME(FirebaseComponentContainer)
+@interface FIRComponentContainer : NSObject
+
+/// A weak reference to the app that an instance of the container belongs to.
+@property(nonatomic, weak, readonly) FIRApp *app;
+
+/// Unavailable. Use the `container` property on `FIRApp`.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentType.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentType.h
new file mode 100644
index 0000000..6f2aca7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRComponentType.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Do not use directly. A placeholder type in order to provide a macro that will warn users of
+/// mis-matched protocols.
+NS_SWIFT_NAME(ComponentType)
+@interface FIRComponentType<__covariant T> : NSObject
+
+/// Do not use directly. A factory method to retrieve an instance that provides a specific
+/// functionality.
++ (T)instanceForProtocol:(Protocol *)protocol inContainer:(FIRComponentContainer *)container;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h
new file mode 100644
index 0000000..76c0c05
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRDiagnosticsData;
+@class FIROptions;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Connects FIRCore with the CoreDiagnostics library. */
+@interface FIRCoreDiagnosticsConnector : NSObject
+
+/** Logs FirebaseCore  related data.
+ *
+ * @param options The options object containing data to log.
+ */
++ (void)logCoreTelemetryWithOptions:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRDependency.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRDependency.h
new file mode 100644
index 0000000..46e9b7e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRDependency.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A dependency on a specific protocol's functionality.
+NS_SWIFT_NAME(Dependency)
+@interface FIRDependency : NSObject
+
+/// The protocol describing functionality being depended on.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// A flag to specify if the dependency is required or not.
+@property(nonatomic, readonly) BOOL isRequired;
+
+/// Initializes a dependency that is required. Calls `initWithProtocol:isRequired` with `YES` for
+/// the required parameter.
+/// Creates a required dependency on the specified protocol's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol;
+
+/// Creates a dependency on the specified protocol's functionality and specify if it's required for
+/// the class's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol isRequired:(BOOL)required;
+
+/// Use `dependencyWithProtocol:isRequired:` instead.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h
new file mode 100644
index 0000000..9f94256
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h	
@@ -0,0 +1,39 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRHeartbeatInfo : NSObject
+
+// Enum representing the different heartbeat codes.
+typedef NS_ENUM(NSInteger, FIRHeartbeatInfoCode) {
+  FIRHeartbeatInfoCodeNone = 0,
+  FIRHeartbeatInfoCodeSDK = 1,
+  FIRHeartbeatInfoCodeGlobal = 2,
+  FIRHeartbeatInfoCodeCombined = 3,
+};
+
+/**
+ * Get heartbeat code required for the sdk.
+ * @param heartbeatTag String representing the sdk heartbeat tag.
+ * @return Heartbeat code indicating whether or not an sdk/global heartbeat
+ * needs to be sent
+ */
++ (FIRHeartbeatInfoCode)heartbeatCodeForTag:(NSString *)heartbeatTag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLibrary.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLibrary.h
new file mode 100644
index 0000000..9575e94
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLibrary.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRLibrary_h
+#define FIRLibrary_h
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provide an interface to register a library for userAgent logging and availability to others.
+NS_SWIFT_NAME(Library)
+@protocol FIRLibrary
+
+/// Returns one or more FIRComponents that will be registered in
+/// FIRApp and participate in dependency resolution and injection.
++ (NSArray<FIRComponent *> *)componentsToRegister;
+
+@optional
+/// Implement this method if the library needs notifications for lifecycle events. This method is
+/// called when the developer calls `FirebaseApp.configure()`.
++ (void)configureWithApp:(FIRApp *)app;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* FIRLibrary_h */
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLogger.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLogger.h
new file mode 100644
index 0000000..b6242ff
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIRLogger.h	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <FirebaseCore/FIRLoggerLevel.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * The Firebase services used in Firebase logger.
+ */
+typedef NSString *const FIRLoggerService;
+
+extern FIRLoggerService kFIRLoggerAnalytics;
+extern FIRLoggerService kFIRLoggerCrash;
+extern FIRLoggerService kFIRLoggerCore;
+extern FIRLoggerService kFIRLoggerRemoteConfig;
+
+/**
+ * The key used to store the logger's error count.
+ */
+extern NSString *const kFIRLoggerErrorCountKey;
+
+/**
+ * The key used to store the logger's warning count.
+ */
+extern NSString *const kFIRLoggerWarningCountKey;
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+/**
+ * Enables or disables Analytics debug mode.
+ * If set to YES, the logging level for Analytics will be set to FIRLoggerLevelDebug.
+ * Enabling the debug mode has no effect if the app is running from App Store.
+ * (required) analytics debug mode flag.
+ */
+void FIRSetAnalyticsDebugMode(BOOL analyticsDebugMode);
+
+/**
+ * Changes the default logging level of FIRLoggerLevelNotice to a user-specified level.
+ * The default level cannot be set above FIRLoggerLevelNotice if the app is running from App Store.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ */
+void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel);
+
+/**
+ * Checks if the specified logger level is loggable given the current settings.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) whether or not this function is called from the Analytics component.
+ */
+BOOL FIRIsLoggableLevel(FIRLoggerLevel loggerLevel, BOOL analyticsComponent);
+
+/**
+ * Logs a message to the Xcode console and the device log. If running from AppStore, will
+ * not log any messages with a level higher than FIRLoggerLevelNotice to avoid log spamming.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+extern void FIRLogBasic(FIRLoggerLevel level,
+                        FIRLoggerService service,
+                        NSString *messageCode,
+                        NSString *message,
+// On 64-bit simulators, va_list is not a pointer, so cannot be marked nullable
+// See: http://stackoverflow.com/q/29095469
+#if __LP64__ && TARGET_OS_SIMULATOR || TARGET_OS_OSX
+                        va_list args_ptr
+#else
+                        va_list _Nullable args_ptr
+#endif
+);
+
+/**
+ * The following functions accept the following parameters in order:
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting from "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ *            See go/firebase-log-proposal for details.
+ * (required) message string which can be a format string.
+ * (optional) the list of arguments to substitute into the format string.
+ * Example usage:
+ * FIRLogError(kFIRLoggerCore, @"I-COR000001", @"Configuration of %@ failed.", app.name);
+ */
+extern void FIRLogError(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogWarning(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogNotice(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogInfo(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogDebug(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+@interface FIRLoggerWrapper : NSObject
+
+/**
+ * Objective-C wrapper for FIRLogBasic to allow weak linking to FIRLogger
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+
++ (void)logWithLevel:(FIRLoggerLevel)level
+         withService:(FIRLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIROptionsInternal.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIROptionsInternal.h
new file mode 100644
index 0000000..8efc5fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FIROptionsInternal.h	
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIROptions.h>
+
+/**
+ * Keys for the strings in the plist file.
+ */
+extern NSString *const kFIRAPIKey;
+extern NSString *const kFIRTrackingID;
+extern NSString *const kFIRGoogleAppID;
+extern NSString *const kFIRClientID;
+extern NSString *const kFIRGCMSenderID;
+extern NSString *const kFIRAndroidClientID;
+extern NSString *const kFIRDatabaseURL;
+extern NSString *const kFIRStorageBucket;
+extern NSString *const kFIRBundleID;
+extern NSString *const kFIRProjectID;
+
+/**
+ * Keys for the plist file name
+ */
+extern NSString *const kServiceInfoFileName;
+
+extern NSString *const kServiceInfoFileType;
+
+/**
+ * This header file exposes the initialization of FIROptions to internal use.
+ */
+@interface FIROptions ()
+
+/**
+ * resetDefaultOptions and initInternalWithOptionsDictionary: are exposed only for unit tests.
+ */
++ (void)resetDefaultOptions;
+
+/**
+ * Initializes the options with dictionary. The above strings are the keys of the dictionary.
+ * This is the designated initializer.
+ */
+- (instancetype)initInternalWithOptionsDictionary:(NSDictionary *)serviceInfoDictionary
+    NS_DESIGNATED_INITIALIZER;
+
+/**
+ * defaultOptions and defaultOptionsDictionary are exposed in order to be used in FIRApp and
+ * other first party services.
+ */
++ (FIROptions *)defaultOptions;
+
++ (NSDictionary *)defaultOptionsDictionary;
+
+/**
+ * Indicates whether or not Analytics collection was explicitly enabled via a plist flag or at
+ * runtime.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionExplicitlySet;
+
+/**
+ * Whether or not Analytics Collection was enabled. Analytics Collection is enabled unless
+ * explicitly disabled in GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionEnabled;
+
+/**
+ * Whether or not Analytics Collection was completely disabled. If YES, then
+ * isAnalyticsCollectionEnabled will be NO.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionDeactivated;
+
+/**
+ * The version ID of the client library, e.g. @"1100000".
+ */
+@property(nonatomic, readonly, copy) NSString *libraryVersionID;
+
+/**
+ * The flag indicating whether this object was constructed with the values in the default plist
+ * file.
+ */
+@property(nonatomic) BOOL usingOptionsFromDefaultPlist;
+
+/**
+ * Whether or not Measurement was enabled. Measurement is enabled unless explicitly disabled in
+ * GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isMeasurementEnabled;
+
+/**
+ * Whether or not Analytics was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsEnabled;
+
+/**
+ * Whether or not SignIn was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isSignInEnabled;
+
+/**
+ * Whether or not editing is locked. This should occur after FIROptions has been set on a FIRApp.
+ */
+@property(nonatomic, getter=isEditingLocked) BOOL editingLocked;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h
new file mode 100644
index 0000000..88d012b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h	
@@ -0,0 +1,28 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// An umbrella header, for any other libraries in this repo to access Firebase Public and Private
+// headers. Any package manager complexity should be handled here.
+
+#import <FirebaseCore/FirebaseCore.h>
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRComponent.h"
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+#import "FirebaseCore/Sources/Private/FIRComponentType.h"
+#import "FirebaseCore/Sources/Private/FIRDependency.h"
+#import "FirebaseCore/Sources/Private/FIRHeartbeatInfo.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRApp.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRApp.h
new file mode 100644
index 0000000..f5578c6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRApp.h	
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIROptions;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A block that takes a BOOL and has no return value. */
+typedef void (^FIRAppVoidBoolCallback)(BOOL success) NS_SWIFT_NAME(FirebaseAppVoidBoolCallback);
+
+/**
+ * The entry point of Firebase SDKs.
+ *
+ * Initialize and configure FIRApp using +[FIRApp configure]
+ * or other customized ways as shown below.
+ *
+ * The logging system has two modes: default mode and debug mode. In default mode, only logs with
+ * log level Notice, Warning and Error will be sent to device. In debug mode, all logs will be sent
+ * to device. The log levels that Firebase uses are consistent with the ASL log levels.
+ *
+ * Enable debug mode by passing the -FIRDebugEnabled argument to the application. You can add this
+ * argument in the application's Xcode scheme. When debug mode is enabled via -FIRDebugEnabled,
+ * further executions of the application will also be in debug mode. In order to return to default
+ * mode, you must explicitly disable the debug mode with the application argument -FIRDebugDisabled.
+ *
+ * It is also possible to change the default logging level in code by calling setLoggerLevel: on
+ * the FIRConfiguration interface.
+ */
+NS_SWIFT_NAME(FirebaseApp)
+@interface FIRApp : NSObject
+
+/**
+ * Configures a default Firebase app. Raises an exception if any configuration step fails. The
+ * default app is named "__FIRAPP_DEFAULT". This method should be called after the app is launched
+ * and before using Firebase services. This method should be called from the main thread and
+ * contains synchronous file I/O (reading GoogleService-Info.plist from disk).
+ */
++ (void)configure;
+
+/**
+ * Configures the default Firebase app with the provided options. The default app is named
+ * "__FIRAPP_DEFAULT". Raises an exception if any configuration step fails. This method should be
+ * called from the main thread.
+ *
+ * @param options The Firebase application options used to configure the service.
+ */
++ (void)configureWithOptions:(FIROptions *)options NS_SWIFT_NAME(configure(options:));
+
+/**
+ * Configures a Firebase app with the given name and options. Raises an exception if any
+ * configuration step fails. This method should be called from the main thread.
+ *
+ * @param name The application's name given by the developer. The name should should only contain
+               Letters, Numbers and Underscore.
+ * @param options The Firebase application options used to configure the services.
+ */
+// clang-format off
++ (void)configureWithName:(NSString *)name
+                  options:(FIROptions *)options NS_SWIFT_NAME(configure(name:options:));
+// clang-format on
+
+/**
+ * Returns the default app, or nil if the default app does not exist.
+ */
++ (nullable FIRApp *)defaultApp NS_SWIFT_NAME(app());
+
+/**
+ * Returns a previously created FIRApp instance with the given name, or nil if no such app exists.
+ * This method is thread safe.
+ */
++ (nullable FIRApp *)appNamed:(NSString *)name NS_SWIFT_NAME(app(name:));
+
+/**
+ * Returns the set of all extant FIRApp instances, or nil if there are no FIRApp instances. This
+ * method is thread safe.
+ */
+@property(class, readonly, nullable) NSDictionary<NSString *, FIRApp *> *allApps;
+
+/**
+ * Cleans up the current FIRApp, freeing associated data and returning its name to the pool for
+ * future use. This method is thread safe.
+ */
+- (void)deleteApp:(FIRAppVoidBoolCallback)completion;
+
+/**
+ * FIRApp instances should not be initialized directly. Call +[FIRApp configure],
+ * +[FIRApp configureWithOptions:], or +[FIRApp configureWithNames:options:] directly.
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Gets the name of this app.
+ */
+@property(nonatomic, copy, readonly) NSString *name;
+
+/**
+ * Gets a copy of the options for this app. These are non-modifiable.
+ */
+@property(nonatomic, copy, readonly) FIROptions *options;
+
+/**
+ * Gets or sets whether automatic data collection is enabled for all products. Defaults to `YES`
+ * unless `FirebaseDataCollectionDefaultEnabled` is set to `NO` in your app's Info.plist. This value
+ * is persisted across runs of the app so that it can be set once when users have consented to
+ * collection.
+ */
+@property(nonatomic, readwrite, getter=isDataCollectionDefaultEnabled)
+    BOOL dataCollectionDefaultEnabled;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRConfiguration.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRConfiguration.h
new file mode 100644
index 0000000..2b8e678
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRConfiguration.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRLoggerLevel.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * This interface provides global level properties that the developer can tweak.
+ */
+NS_SWIFT_NAME(FirebaseConfiguration)
+@interface FIRConfiguration : NSObject
+
+/** Returns the shared configuration object. */
+@property(class, nonatomic, readonly) FIRConfiguration *sharedInstance NS_SWIFT_NAME(shared);
+
+/**
+ * Sets the logging level for internal Firebase logging. Firebase will only log messages
+ * that are logged at or below loggerLevel. The messages are logged both to the Xcode
+ * console and to the device's log. Note that if an app is running from AppStore, it will
+ * never log above FIRLoggerLevelNotice even if loggerLevel is set to a higher (more verbose)
+ * setting.
+ *
+ * @param loggerLevel The maximum logging level. The default level is set to FIRLoggerLevelNotice.
+ */
+- (void)setLoggerLevel:(FIRLoggerLevel)loggerLevel;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRLoggerLevel.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRLoggerLevel.h
new file mode 100644
index 0000000..dca3aa0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRLoggerLevel.h	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Note that importing GULLoggerLevel.h will lead to a non-modular header
+// import error.
+
+/**
+ * The log levels used by internal logging.
+ */
+typedef NS_ENUM(NSInteger, FIRLoggerLevel) {
+  /** Error level, matches ASL_LEVEL_ERR. */
+  FIRLoggerLevelError = 3,
+  /** Warning level, matches ASL_LEVEL_WARNING. */
+  FIRLoggerLevelWarning = 4,
+  /** Notice level, matches ASL_LEVEL_NOTICE. */
+  FIRLoggerLevelNotice = 5,
+  /** Info level, matches ASL_LEVEL_INFO. */
+  FIRLoggerLevelInfo = 6,
+  /** Debug level, matches ASL_LEVEL_DEBUG. */
+  FIRLoggerLevelDebug = 7,
+  /** Minimum log level. */
+  FIRLoggerLevelMin = FIRLoggerLevelError,
+  /** Maximum log level. */
+  FIRLoggerLevelMax = FIRLoggerLevelDebug
+} NS_SWIFT_NAME(FirebaseLoggerLevel);
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIROptions.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIROptions.h
new file mode 100644
index 0000000..afabbf1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIROptions.h	
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * This class provides constant fields of Google APIs.
+ */
+NS_SWIFT_NAME(FirebaseOptions)
+@interface FIROptions : NSObject <NSCopying>
+
+/**
+ * Returns the default options. The first time this is called it synchronously reads
+ * GoogleService-Info.plist from disk.
+ */
++ (nullable FIROptions *)defaultOptions NS_SWIFT_NAME(defaultOptions());
+
+/**
+ * An iOS API key used for authenticating requests from your app, e.g.
+ * @"AIzaSyDdVgKwhZl0sTTTLZ7iTmt1r3N2cJLnaDk", used to identify your app to Google servers.
+ */
+@property(nonatomic, copy, nullable) NSString *APIKey NS_SWIFT_NAME(apiKey);
+
+/**
+ * The bundle ID for the application. Defaults to `[[NSBundle mainBundle] bundleID]` when not set
+ * manually or in a plist.
+ */
+@property(nonatomic, copy) NSString *bundleID;
+
+/**
+ * The OAuth2 client ID for iOS application used to authenticate Google users, for example
+ * @"12345.apps.googleusercontent.com", used for signing in with Google.
+ */
+@property(nonatomic, copy, nullable) NSString *clientID;
+
+/**
+ * The tracking ID for Google Analytics, e.g. @"UA-12345678-1", used to configure Google Analytics.
+ */
+@property(nonatomic, copy, nullable) NSString *trackingID;
+
+/**
+ * The Project Number from the Google Developer's console, for example @"012345678901", used to
+ * configure Google Cloud Messaging.
+ */
+@property(nonatomic, copy) NSString *GCMSenderID NS_SWIFT_NAME(gcmSenderID);
+
+/**
+ * The Project ID from the Firebase console, for example @"abc-xyz-123".
+ */
+@property(nonatomic, copy, nullable) NSString *projectID;
+
+/**
+ * The Android client ID used in Google AppInvite when an iOS app has its Android version, for
+ * example @"12345.apps.googleusercontent.com".
+ */
+@property(nonatomic, copy, nullable) NSString *androidClientID;
+
+/**
+ * The Google App ID that is used to uniquely identify an instance of an app.
+ */
+@property(nonatomic, copy) NSString *googleAppID;
+
+/**
+ * The database root URL, e.g. @"http://abc-xyz-123.firebaseio.com".
+ */
+@property(nonatomic, copy, nullable) NSString *databaseURL;
+
+/**
+ * The URL scheme used to set up Durable Deep Link service.
+ */
+@property(nonatomic, copy, nullable) NSString *deepLinkURLScheme;
+
+/**
+ * The Google Cloud Storage bucket name, e.g. @"abc-xyz-123.storage.firebase.com".
+ */
+@property(nonatomic, copy, nullable) NSString *storageBucket;
+
+/**
+ * The App Group identifier to share data between the application and the application extensions.
+ * The App Group must be configured in the application and on the Apple Developer Portal. Default
+ * value `nil`.
+ */
+@property(nonatomic, copy, nullable) NSString *appGroupID;
+
+/**
+ * Initializes a customized instance of FIROptions from the file at the given plist file path. This
+ * will read the file synchronously from disk.
+ * For example,
+ * NSString *filePath =
+ *     [[NSBundle mainBundle] pathForResource:@"GoogleService-Info" ofType:@"plist"];
+ * FIROptions *options = [[FIROptions alloc] initWithContentsOfFile:filePath];
+ * Returns nil if the plist file does not exist or is invalid.
+ */
+- (nullable instancetype)initWithContentsOfFile:(NSString *)plistPath NS_DESIGNATED_INITIALIZER;
+
+/**
+ * Initializes a customized instance of FIROptions with required fields. Use the mutable properties
+ * to modify fields for configuring specific services.
+ */
+// clang-format off
+- (instancetype)initWithGoogleAppID:(NSString *)googleAppID
+                        GCMSenderID:(NSString *)GCMSenderID
+    NS_SWIFT_NAME(init(googleAppID:gcmSenderID:)) NS_DESIGNATED_INITIALIZER;
+// clang-format on
+
+/** Unavailable. Please use `init(contentsOfFile:)` or `init(googleAppID:gcmSenderID:)` instead. */
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h
new file mode 100644
index 0000000..651edaf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FIRVersion.h	
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Returns the current version of Firebase. */
+NS_SWIFT_NAME(FirebaseVersion())
+NSString* FIRFirebaseVersion(void);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FirebaseCore.h b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FirebaseCore.h
new file mode 100644
index 0000000..680d604
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/FirebaseCore/Sources/Public/FirebaseCore/FirebaseCore.h	
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRApp.h"
+#import "FIRConfiguration.h"
+#import "FIRLoggerLevel.h"
+#import "FIROptions.h"
+#import "FIRVersion.h"
diff --git a/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h b/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h
new file mode 100644
index 0000000..69c4072
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** If present, is a BOOL wrapped in an NSNumber. */
+#define kFIRCDIsDataCollectionDefaultEnabledKey @"FIRCDIsDataCollectionDefaultEnabledKey"
+
+/** If present, is an int32_t wrapped in an NSNumber. */
+#define kFIRCDConfigurationTypeKey @"FIRCDConfigurationTypeKey"
+
+/** If present, is an NSString. */
+#define kFIRCDSdkNameKey @"FIRCDSdkNameKey"
+
+/** If present, is an NSString. */
+#define kFIRCDSdkVersionKey @"FIRCDSdkVersionKey"
+
+/** If present, is an int32_t wrapped in an NSNumber. */
+#define kFIRCDllAppsCountKey @"FIRCDllAppsCountKey"
+
+/** If present, is an NSString. */
+#define kFIRCDGoogleAppIDKey @"FIRCDGoogleAppIDKey"
+
+/** If present, is an NSString. */
+#define kFIRCDBundleIDKey @"FIRCDBundleID"
+
+/** If present, is a BOOL wrapped in an NSNumber. */
+#define kFIRCDUsingOptionsFromDefaultPlistKey @"FIRCDUsingOptionsFromDefaultPlistKey"
+
+/** If present, is an NSString. */
+#define kFIRCDLibraryVersionIDKey @"FIRCDLibraryVersionIDKey"
+
+/** If present, is an NSString. */
+#define kFIRCDFirebaseUserAgentKey @"FIRCDFirebaseUserAgentKey"
+
+/** Defines the interface of a data object needed to log diagnostics data. */
+@protocol FIRCoreDiagnosticsData <NSObject>
+
+@required
+
+/** A dictionary containing data (non-exhaustive) to be logged in diagnostics. */
+@property(nonatomic) NSDictionary<NSString *, id> *diagnosticObjects;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h b/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h
new file mode 100644
index 0000000..2b0eb71
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRCoreDiagnosticsData.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Allows the interoperation of FirebaseCore and FirebaseCoreDiagnostics. */
+@protocol FIRCoreDiagnosticsInterop <NSObject>
+
+/** Sends the given diagnostics data.
+ *
+ * @param diagnosticsData The diagnostics data object to send.
+ */
++ (void)sendDiagnosticsData:(id<FIRCoreDiagnosticsData>)diagnosticsData;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCore/LICENSE b/ChattingApp 000/Pods/FirebaseCore/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      including but not limited to software source code, documentation
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+   9. Accepting Warranty or Additional Liability. While redistributing
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+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/ChattingApp 000/Pods/FirebaseCore/README.md b/ChattingApp 000/Pods/FirebaseCore/README.md
new file mode 100644
index 0000000..335fbb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCore/README.md	
@@ -0,0 +1,333 @@
+[![Version](https://img.shields.io/cocoapods/v/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+
+[![Actions Status][gh-abtesting-badge]][gh-actions]
+[![Actions Status][gh-appcheck-badge]][gh-actions]
+[![Actions Status][gh-appdistribution-badge]][gh-actions]
+[![Actions Status][gh-auth-badge]][gh-actions]
+[![Actions Status][gh-cocoapods-integration-badge]][gh-actions]
+[![Actions Status][gh-core-badge]][gh-actions]
+[![Actions Status][gh-core-diagnostics-badge]][gh-actions]
+[![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+[![Actions Status][gh-dynamiclinks-badge]][gh-actions]
+[![Actions Status][gh-firebasepod-badge]][gh-actions]
+[![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-components-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
+[![Actions Status][gh-interop-badge]][gh-actions]
+[![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-mlmodeldownloader-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
+[![Actions Status][gh-storage-badge]][gh-actions]
+[![Actions Status][gh-symbolcollision-badge]][gh-actions]
+[![Actions Status][gh-zip-badge]][gh-actions]
+
+# Firebase Apple Open Source Development
+
+This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics
+and FirebaseML.
+
+Firebase is an app development platform with tools to help you build, grow and
+monetize your app. More information about Firebase can be found on the
+[official Firebase website](https://firebase.google.com).
+
+**Note** _FirebaseCombineSwift_ contains support for Apple's Combine framework. This module is currently under development, and not yet supported for use in production environments. Fore more details, please refer to the [docs](FirebaseCombineSwift/README.md).
+
+## Installation
+
+See the subsections below for details about the different installation methods.
+1. [Standard pod install](README.md#standard-pod-install)
+1. [Swift Package Manager](SwiftPackageManager.md)
+1. [Installing from the GitHub repo](README.md#installing-from-github)
+1. [Experimental Carthage](README.md#carthage-ios-only)
+
+### Standard pod install
+
+Go to
+[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).
+
+### Swift Package Manager
+
+Instructions for [Swift Package Manager](https://swift.org/package-manager/) support can be
+found at [SwiftPackageManager.md](SwiftPackageManager.md).
+
+### Installing from GitHub
+
+These instructions can be used to access the Firebase repo at other branches,
+tags, or commits.
+
+#### Background
+
+See
+[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
+for instructions and options about overriding pod source locations.
+
+#### Accessing Firebase Source Snapshots
+
+All of the official releases are tagged in this repo and available via CocoaPods. To access a local
+source snapshot or unreleased branch, use Podfile directives like the following:
+
+To access FirebaseFirestore via a branch:
+```ruby
+pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+```
+
+To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:
+
+```ruby
+pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
+pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
+```
+
+### Carthage (iOS only)
+
+Instructions for the experimental Carthage distribution are at
+[Carthage](Carthage.md).
+
+### Using Firebase from a Framework or a library
+
+[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)
+
+## Development
+
+To develop Firebase software in this repository, ensure that you have at least
+the following software:
+
+  * Xcode 12.2 (or later)
+
+CocoaPods is still the canonical way to develop, but much of the repo now supports
+development with Swift Package Manager.
+
+### CocoaPods
+
+Install
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+```ruby
+pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios
+```
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+Firestore has a self contained Xcode project. See
+[Firestore/README.md](Firestore/README.md).
+
+#### Development for Catalyst
+* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Swift Package Manager
+* To enable test schemes: `./scripts/setup_spm_tests.sh`
+* `open Package.swift` or double click `Package.swift` in Finder.
+* Xcode will open the project
+  * Choose a scheme for a library to build or test suite to run
+  * Choose a target platform by selecting the run destination along with the scheme
+
+### Adding a New Firebase Pod
+
+See [AddNewPod.md](AddNewPod.md).
+
+### Managing Headers and Imports
+
+See [HeadersImports.md](HeadersImports.md).
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@12
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+### Running Sample Apps
+In order to run the sample apps and integration tests, you'll need a valid
+`GoogleService-Info.plist` file. The Firebase Xcode project contains dummy plist
+files without real values, but can be replaced with real plist files. To get your own
+`GoogleService-Info.plist` files:
+
+1. Go to the [Firebase Console](https://console.firebase.google.com/)
+2. Create a new Firebase project, if you don't already have one
+3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
+identifier (e.g. `com.google.Database-Example`)
+4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.
+
+### Coverage Report Generation
+
+See [scripts/code_coverage_report/README.md](scripts/code_coverage_report/README.md).
+
+## Specific Component Instructions
+See the sections below for any special instructions for those components.
+
+### Firebase Auth
+
+If you're doing specific Firebase Auth development, see
+[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
+building and running the FirebaseAuth pod along with various samples and tests.
+
+### Firebase Database
+
+The Firebase Database Integration tests can be run against a locally running Database Emulator
+or against a production instance.
+
+To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
+running the integration test.
+
+To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
+`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
+[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
+running.
+
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
+### Firebase Storage
+
+To run the Storage Integration tests, follow the instructions in
+[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).
+
+#### Push Notifications
+
+Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
+In order to actually test receiving push notifications, you will need to:
+
+1. Change the bundle identifier of the sample app to something you own in your Apple Developer
+account, and enable that App ID for push notifications.
+2. You'll also need to
+[upload your APNs Provider Authentication Key or certificate to the
+Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
+at **Project Settings > Cloud Messaging > [Your Firebase App]**.
+3. Ensure your iOS device is added to your Apple Developer portal as a test device.
+
+#### iOS Simulator
+
+The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
+In order to receive push notifications, you'll have to follow the steps above and run the app on a
+physical device.
+
+## Building with Firebase on Apple platforms
+
+At this time, not all of Firebase's products are available across all Apple platforms. However,
+Firebase is constantly evolving and community supported efforts have helped expand Firebase's support.
+To keep up with the latest info regarding Firebase's support across Apple platforms, refer to
+[this chart](https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform)
+in Firebase's documentation.
+
+### Community Supported Efforts
+
+We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
+very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
+participate in the Firebase community.
+
+#### tvOS, macOS, watchOS and Catalyst
+Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and
+work on tvOS, macOS, watchOS and Catalyst.
+
+For tvOS, see the [Sample](Example/tvOSSample).
+For watchOS, currently only Messaging, Storage and Crashlytics (and their dependencies) have limited
+support. See the [Independent Watch App Sample](Example/watchOSSample).
+
+Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and
+this repository is actively developed primarily for iOS. While we can catch basic unit test issues
+with GitHub Actions, there may be some changes where the SDK no longer works as expected on macOS,
+tvOS or watchOS. If you encounter this, please
+[file an issue](https://github.com/firebase/firebase-ios-sdk/issues).
+
+During app setup in the console, you may get to a step that mentions something like "Checking if the
+app has communicated with our servers". This relies on Analytics and will not work on
+macOS/tvOS/watchOS/Catalyst.
+**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.
+
+#### Additional MacOS and Catalyst Notes
+
+* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
+to Build Settings.
+* For Catalyst, FirebaseFirestore requires signing the
+[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).
+
+#### Additional Crashlytics Notes
+* watchOS has limited support. Due to watchOS restrictions, mach exceptions and signal crashes are
+not recorded. (Crashes in SwiftUI are generated as mach exceptions, so will not be recorded)
+
+## Roadmap
+
+See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
+plans and directions.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository are licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+Your use of Firebase is governed by the
+[Terms of Service for Firebase Services](https://firebase.google.com/terms/).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
+[gh-appcheck-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/app_check/badge.svg
+[gh-appdistribution-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/appdistribution/badge.svg
+[gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
+[gh-cocoapods-integration-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/cocoapods-integration/badge.svg
+[gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
+[gh-core-diagnostics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core-diagnostics/badge.svg
+[gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
+[gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
+[gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
+[gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
+[gh-google-utilities-components-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities-components/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
+[gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
+[gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-mlmodeldownloader-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/mlmodeldownloader/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
+[gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
+[gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
+[gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/FIRCoreDiagnostics.m b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/FIRCoreDiagnostics.m
new file mode 100644
index 0000000..c06da7f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/FIRCoreDiagnostics.m	
@@ -0,0 +1,551 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <objc/runtime.h>
+#include <sys/utsname.h>
+
+#import <GoogleDataTransport/GoogleDataTransport.h>
+
+#import <GoogleUtilities/GULAppEnvironmentUtil.h>
+#import <GoogleUtilities/GULHeartbeatDateStorage.h>
+#import <GoogleUtilities/GULLogger.h>
+
+#import "Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h"
+#import "Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h"
+
+#import <nanopb/pb.h>
+#import <nanopb/pb_decode.h>
+#import <nanopb/pb_encode.h>
+
+#import "Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.h"
+
+/** The logger service string to use when printing to the console. */
+static GULLoggerService kFIRCoreDiagnostics = @"[FirebaseCoreDiagnostics/FIRCoreDiagnostics]";
+
+#ifdef FIREBASE_BUILD_ZIP_FILE
+static BOOL kUsingZipFile = YES;
+#else   // FIREBASE_BUILD_ZIP_FILE
+static BOOL kUsingZipFile = NO;
+#endif  // FIREBASE_BUILD_ZIP_FILE
+
+#if SWIFT_PACKAGE
+#define kDeploymentType logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_SPM
+#elif FIREBASE_BUILD_CARTHAGE
+#define kDeploymentType logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_CARTHAGE
+#elif FIREBASE_BUILD_ZIP_FILE
+#define kDeploymentType logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_ZIP_FILE
+#else
+#define kDeploymentType logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_COCOAPODS
+#endif
+
+static NSString *const kFIRServiceMLModelInterpreter = @"MLModelInterpreter";
+
+static NSString *const kFIRServiceAdMob = @"AdMob";
+static NSString *const kFIRServiceAuth = @"Auth";
+static NSString *const kFIRServiceAuthUI = @"AuthUI";
+static NSString *const kFIRServiceCrash = @"Crash";
+static NSString *const kFIRServiceDatabase = @"Database";
+static NSString *const kFIRServiceDynamicLinks = @"DynamicLinks";
+static NSString *const kFIRServiceFirestore = @"Firestore";
+static NSString *const kFIRServiceFunctions = @"Functions";
+static NSString *const kFIRServiceIAM = @"InAppMessaging";
+static NSString *const kFIRServiceInstanceID = @"InstanceID";
+static NSString *const kFIRServiceInvites = @"Invites";
+static NSString *const kFIRServiceMessaging = @"Messaging";
+static NSString *const kFIRServiceMeasurement = @"Measurement";
+static NSString *const kFIRServicePerformance = @"Performance";
+static NSString *const kFIRServiceRemoteConfig = @"RemoteConfig";
+static NSString *const kFIRServiceStorage = @"Storage";
+static NSString *const kGGLServiceAnalytics = @"Analytics";
+static NSString *const kGGLServiceSignIn = @"SignIn";
+static NSString *const kFIRAppDiagnosticsConfigurationTypeKey =
+    @"FIRAppDiagnosticsConfigurationTypeKey";
+static NSString *const kFIRAppDiagnosticsFIRAppKey = @"FIRAppDiagnosticsFIRAppKey";
+static NSString *const kFIRAppDiagnosticsSDKNameKey = @"FIRAppDiagnosticsSDKNameKey";
+static NSString *const kFIRAppDiagnosticsSDKVersionKey = @"FIRAppDiagnosticsSDKVersionKey";
+static NSString *const kFIRCoreDiagnosticsHeartbeatTag = @"FIRCoreDiagnostics";
+
+/**
+ * The file name to the recent heartbeat date.
+ */
+NSString *const kFIRCoreDiagnosticsHeartbeatDateFileName = @"FIREBASE_DIAGNOSTICS_HEARTBEAT_DATE";
+
+/**
+ * @note This should implement the GDTCOREventDataObject protocol, but can't because of
+ * weak-linking.
+ */
+@interface FIRCoreDiagnosticsLog : NSObject
+
+/** The config that will be converted to proto bytes. */
+@property(nonatomic) logs_proto_mobilesdk_ios_ICoreConfiguration config;
+
+@end
+
+@implementation FIRCoreDiagnosticsLog
+
+- (instancetype)initWithConfig:(logs_proto_mobilesdk_ios_ICoreConfiguration)config {
+  self = [super init];
+  if (self) {
+    _config = config;
+  }
+  return self;
+}
+
+// Provided and required by the GDTCOREventDataObject protocol.
+- (NSData *)transportBytes {
+  pb_ostream_t sizestream = PB_OSTREAM_SIZING;
+
+  // Encode 1 time to determine the size.
+  if (!pb_encode(&sizestream, logs_proto_mobilesdk_ios_ICoreConfiguration_fields, &_config)) {
+    GDTCORLogError(GDTCORMCETransportBytesError, @"Error in nanopb encoding for size: %s",
+                   PB_GET_ERROR(&sizestream));
+  }
+
+  // Encode a 2nd time to actually get the bytes from it.
+  size_t bufferSize = sizestream.bytes_written;
+  CFMutableDataRef dataRef = CFDataCreateMutable(CFAllocatorGetDefault(), bufferSize);
+  CFDataSetLength(dataRef, bufferSize);
+  pb_ostream_t ostream = pb_ostream_from_buffer((void *)CFDataGetBytePtr(dataRef), bufferSize);
+  if (!pb_encode(&ostream, logs_proto_mobilesdk_ios_ICoreConfiguration_fields, &_config)) {
+    GDTCORLogError(GDTCORMCETransportBytesError, @"Error in nanopb encoding for bytes: %s",
+                   PB_GET_ERROR(&ostream));
+  }
+  CFDataSetLength(dataRef, ostream.bytes_written);
+
+  return CFBridgingRelease(dataRef);
+}
+
+- (void)dealloc {
+  pb_release(logs_proto_mobilesdk_ios_ICoreConfiguration_fields, &_config);
+}
+
+@end
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This class produces a protobuf containing diagnostics and usage data to be logged. */
+@interface FIRCoreDiagnostics : NSObject <FIRCoreDiagnosticsInterop>
+
+/** The queue on which all diagnostics collection will occur. */
+@property(nonatomic, readonly) dispatch_queue_t diagnosticsQueue;
+
+/** The transport object used to send data. */
+@property(nonatomic, readonly) GDTCORTransport *transport;
+
+/** The storage to store the date of the last sent heartbeat. */
+@property(nonatomic, readonly) GULHeartbeatDateStorage *heartbeatDateStorage;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+@implementation FIRCoreDiagnostics
+
++ (instancetype)sharedInstance {
+  static FIRCoreDiagnostics *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FIRCoreDiagnostics alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  GDTCORTransport *transport = [[GDTCORTransport alloc] initWithMappingID:@"137"
+                                                             transformers:nil
+                                                                   target:kGDTCORTargetFLL];
+
+  GULHeartbeatDateStorage *dateStorage =
+      [[GULHeartbeatDateStorage alloc] initWithFileName:kFIRCoreDiagnosticsHeartbeatDateFileName];
+
+  return [self initWithTransport:transport heartbeatDateStorage:dateStorage];
+}
+
+/** Initializer for unit tests.
+ *
+ * @param transport A `GDTCORTransport` instance which that be used to send event.
+ * @param heartbeatDateStorage An instanse of date storage to track heartbeat sending.
+ * @return Returns the initialized `FIRCoreDiagnostics` instance.
+ */
+- (instancetype)initWithTransport:(GDTCORTransport *)transport
+             heartbeatDateStorage:(GULHeartbeatDateStorage *)heartbeatDateStorage {
+  self = [super init];
+  if (self) {
+    _diagnosticsQueue =
+        dispatch_queue_create("com.google.FIRCoreDiagnostics", DISPATCH_QUEUE_SERIAL);
+    _transport = transport;
+    _heartbeatDateStorage = heartbeatDateStorage;
+  }
+  return self;
+}
+
+#pragma mark - nanopb helper functions
+
+/** Callocs a pb_bytes_array and copies the given NSString's bytes into the bytes array.
+ *
+ * @note Memory needs to be free manually, through pb_free or pb_release.
+ * @param string The string to encode as pb_bytes.
+ */
+pb_bytes_array_t *FIREncodeString(NSString *string) {
+  NSData *stringBytes = [string dataUsingEncoding:NSUTF8StringEncoding];
+  return FIREncodeData(stringBytes);
+}
+
+/** Callocs a pb_bytes_array and copies the given NSData bytes into the bytes array.
+ *
+ * @note Memory needs to be free manually, through pb_free or pb_release.
+ * @param data The data to copy into the new bytes array.
+ */
+pb_bytes_array_t *FIREncodeData(NSData *data) {
+  pb_bytes_array_t *pbBytesArray = calloc(1, PB_BYTES_ARRAY_T_ALLOCSIZE(data.length));
+  if (pbBytesArray != NULL) {
+    [data getBytes:pbBytesArray->bytes length:data.length];
+    pbBytesArray->size = (pb_size_t)data.length;
+  }
+  return pbBytesArray;
+}
+
+/** Maps a service string to the representative nanopb enum.
+ *
+ * @param serviceString The SDK service string to convert.
+ * @return The representative nanopb enum.
+ */
+logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType FIRMapFromServiceStringToTypeEnum(
+    NSString *serviceString) {
+  static NSDictionary<NSString *, NSNumber *> *serviceStringToTypeEnum;
+  if (serviceStringToTypeEnum == nil) {
+    serviceStringToTypeEnum = @{
+      kFIRServiceAdMob : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ADMOB),
+      kFIRServiceMessaging : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MESSAGING),
+      kFIRServiceMeasurement :
+          @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MEASUREMENT),
+      kFIRServiceRemoteConfig :
+          @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_REMOTE_CONFIG),
+      kFIRServiceDatabase : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_DATABASE),
+      kFIRServiceDynamicLinks :
+          @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_DYNAMIC_LINKS),
+      kFIRServiceAuth : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_AUTH),
+      kFIRServiceAuthUI : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_AUTH_UI),
+      kFIRServiceFirestore : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_FIRESTORE),
+      kFIRServiceFunctions : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_FUNCTIONS),
+      kFIRServicePerformance :
+          @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_PERFORMANCE),
+      kFIRServiceStorage : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_STORAGE),
+      kFIRServiceMLModelInterpreter :
+          @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_MODEL_INTERPRETER),
+      kGGLServiceAnalytics : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ANALYTICS),
+      kGGLServiceSignIn : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_SIGN_IN),
+      kFIRServiceIAM : @(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_IN_APP_MESSAGING),
+    };
+  }
+  if (serviceStringToTypeEnum[serviceString] != nil) {
+    return (int32_t)serviceStringToTypeEnum[serviceString].longLongValue;
+  }
+  return logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_UNKNOWN_SDK_SERVICE;
+}
+
+#pragma mark - Proto population functions
+
+/** Populates the given proto with data related to an SDK logDiagnostics call from the
+ * diagnosticObjects dictionary.
+ *
+ * @param config The proto to populate
+ * @param diagnosticObjects The dictionary of diagnostics objects.
+ */
+void FIRPopulateProtoWithInfoFromUserInfoParams(logs_proto_mobilesdk_ios_ICoreConfiguration *config,
+                                                NSDictionary<NSString *, id> *diagnosticObjects) {
+  NSNumber *configurationType = diagnosticObjects[kFIRCDConfigurationTypeKey];
+  if (configurationType != nil) {
+    switch (configurationType.integerValue) {
+      case logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_CORE:
+        config->configuration_type =
+            logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_CORE;
+        config->has_configuration_type = 1;
+        break;
+      case logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_SDK:
+        config->configuration_type =
+            logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_SDK;
+        config->has_configuration_type = 1;
+        break;
+      default:
+        break;
+    }
+  }
+
+  NSString *sdkName = diagnosticObjects[kFIRCDSdkNameKey];
+  if (sdkName) {
+    config->sdk_name = FIRMapFromServiceStringToTypeEnum(sdkName);
+    config->has_sdk_name = 1;
+  }
+
+  NSString *version = diagnosticObjects[kFIRCDSdkVersionKey];
+  if (version) {
+    config->sdk_version = FIREncodeString(version);
+  }
+}
+
+/** Populates the given proto with data from the calling FIRApp using the given
+ * diagnosticObjects dictionary.
+ *
+ * @param config The proto to populate
+ * @param diagnosticObjects The dictionary of diagnostics objects.
+ */
+void FIRPopulateProtoWithCommonInfoFromApp(logs_proto_mobilesdk_ios_ICoreConfiguration *config,
+                                           NSDictionary<NSString *, id> *diagnosticObjects) {
+  config->pod_name = logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_FIREBASE;
+  config->has_pod_name = 1;
+
+  if (!diagnosticObjects[kFIRCDllAppsCountKey]) {
+    GDTCORLogError(GDTCORMCEGeneralError, @"%@",
+                   @"App count is a required value in the data dict.");
+  }
+  config->app_count = (int32_t)[diagnosticObjects[kFIRCDllAppsCountKey] integerValue];
+  config->has_app_count = 1;
+
+  NSString *googleAppID = diagnosticObjects[kFIRCDGoogleAppIDKey];
+  if (googleAppID.length) {
+    config->app_id = FIREncodeString(googleAppID);
+  }
+
+  NSString *bundleID = diagnosticObjects[kFIRCDBundleIDKey];
+  if (bundleID.length) {
+    config->bundle_id = FIREncodeString(bundleID);
+  }
+
+  NSString *firebaseUserAgent = diagnosticObjects[kFIRCDFirebaseUserAgentKey];
+  if (firebaseUserAgent.length) {
+    config->platform_info = FIREncodeString(firebaseUserAgent);
+  }
+
+  NSNumber *usingOptionsFromDefaultPlist = diagnosticObjects[kFIRCDUsingOptionsFromDefaultPlistKey];
+  if (usingOptionsFromDefaultPlist != nil) {
+    config->use_default_app = [usingOptionsFromDefaultPlist boolValue];
+    config->has_use_default_app = 1;
+  }
+
+  NSString *libraryVersionID = diagnosticObjects[kFIRCDLibraryVersionIDKey];
+  if (libraryVersionID) {
+    config->icore_version = FIREncodeString(libraryVersionID);
+  }
+
+  NSString *deviceModel = [GULAppEnvironmentUtil deviceModel];
+  if (deviceModel.length) {
+    config->device_model = FIREncodeString(deviceModel);
+  }
+
+  NSString *osVersion = [GULAppEnvironmentUtil systemVersion];
+  if (osVersion.length) {
+    config->os_version = FIREncodeString(osVersion);
+  }
+
+  config->using_zip_file = kUsingZipFile;
+  config->has_using_zip_file = 1;
+  config->deployment_type = kDeploymentType;
+  config->has_deployment_type = 1;
+  config->deployed_in_app_store = [GULAppEnvironmentUtil isFromAppStore];
+  config->has_deployed_in_app_store = 1;
+}
+
+/** Populates the given proto with installed services data.
+ *
+ * @param config The proto to populate
+ */
+void FIRPopulateProtoWithInstalledServices(logs_proto_mobilesdk_ios_ICoreConfiguration *config) {
+  NSMutableArray<NSNumber *> *sdkServiceInstalledArray = [NSMutableArray array];
+
+  // AdMob
+  if (NSClassFromString(@"GADBannerView") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceAdMob))];
+  }
+  // CloudMessaging
+  if (NSClassFromString(@"FIRMessaging") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceMessaging))];
+  }
+  // RemoteConfig
+  if (NSClassFromString(@"FIRRemoteConfig") != nil) {
+    [sdkServiceInstalledArray
+        addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceRemoteConfig))];
+  }
+  // Measurement/Analtyics
+  if (NSClassFromString(@"FIRAnalytics") != nil) {
+    [sdkServiceInstalledArray
+        addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceMeasurement))];
+  }
+  // ML Model Interpreter
+  if (NSClassFromString(@"FIRCustomModelInterpreter") != nil) {
+    [sdkServiceInstalledArray
+        addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceMLModelInterpreter))];
+  }
+  // Database
+  if (NSClassFromString(@"FIRDatabase") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceDatabase))];
+  }
+  // DynamicDeepLink
+  if (NSClassFromString(@"FIRDynamicLinks") != nil) {
+    [sdkServiceInstalledArray
+        addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceDynamicLinks))];
+  }
+  // Auth
+  if (NSClassFromString(@"FIRAuth") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceAuth))];
+  }
+  // AuthUI
+  if (NSClassFromString(@"FUIAuth") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceAuthUI))];
+  }
+  // Firestore
+  if (NSClassFromString(@"FIRFirestore") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceFirestore))];
+  }
+  // Functions
+  if (NSClassFromString(@"FIRFunctions") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceFunctions))];
+  }
+  // Performance
+  if (NSClassFromString(@"FIRPerformance") != nil) {
+    [sdkServiceInstalledArray
+        addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServicePerformance))];
+  }
+  // Storage
+  if (NSClassFromString(@"FIRStorage") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceStorage))];
+  }
+  // SignIn via Google pod
+  if (NSClassFromString(@"GIDSignIn") != nil && NSClassFromString(@"GGLContext") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kGGLServiceSignIn))];
+  }
+  // Analytics via Google pod
+  if (NSClassFromString(@"GAI") != nil && NSClassFromString(@"GGLContext") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kGGLServiceAnalytics))];
+  }
+
+  // In-App Messaging
+  if (NSClassFromString(@"FIRInAppMessaging") != nil) {
+    [sdkServiceInstalledArray addObject:@(FIRMapFromServiceStringToTypeEnum(kFIRServiceIAM))];
+  }
+
+  logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType *servicesInstalled =
+      calloc(sdkServiceInstalledArray.count,
+             sizeof(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType));
+  if (servicesInstalled == NULL) {
+    return;
+  }
+  for (NSUInteger i = 0; i < sdkServiceInstalledArray.count; i++) {
+    NSNumber *typeEnum = sdkServiceInstalledArray[i];
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType serviceType =
+        (int32_t)typeEnum.integerValue;
+    servicesInstalled[i] = serviceType;
+  }
+
+  config->sdk_service_installed = servicesInstalled;
+  config->sdk_service_installed_count = (int32_t)sdkServiceInstalledArray.count;
+}
+
+/** Populates the proto with Info.plist values.
+ *
+ * @param config The proto to populate.
+ */
+void FIRPopulateProtoWithInfoPlistValues(logs_proto_mobilesdk_ios_ICoreConfiguration *config) {
+  NSDictionary<NSString *, id> *info = [[NSBundle mainBundle] infoDictionary];
+
+  NSString *xcodeVersion = info[@"DTXcodeBuild"] ?: @"";
+  NSString *sdkVersion = info[@"DTSDKBuild"] ?: @"";
+  NSString *combinedVersions = [NSString stringWithFormat:@"%@-%@", xcodeVersion, sdkVersion];
+  config->apple_framework_version = FIREncodeString(combinedVersions);
+
+  NSString *minVersion = info[@"MinimumOSVersion"];
+  if (minVersion) {
+    config->min_supported_ios_version = FIREncodeString(minVersion);
+  }
+
+  // Apps can turn off swizzling in the Info.plist, check if they've explicitly set the value and
+  // report it. It's enabled by default.
+  NSNumber *appDelegateSwizzledNum = info[@"FirebaseAppDelegateProxyEnabled"];
+  BOOL appDelegateSwizzled = YES;
+  if ([appDelegateSwizzledNum isKindOfClass:[NSNumber class]]) {
+    appDelegateSwizzled = [appDelegateSwizzledNum boolValue];
+  }
+  config->swizzling_enabled = appDelegateSwizzled;
+  config->has_swizzling_enabled = 1;
+}
+
+#pragma mark - FIRCoreDiagnosticsInterop
+
++ (void)sendDiagnosticsData:(nonnull id<FIRCoreDiagnosticsData>)diagnosticsData {
+  FIRCoreDiagnostics *diagnostics = [FIRCoreDiagnostics sharedInstance];
+  [diagnostics sendDiagnosticsData:diagnosticsData];
+}
+
+- (void)sendDiagnosticsData:(nonnull id<FIRCoreDiagnosticsData>)diagnosticsData {
+  dispatch_async(self.diagnosticsQueue, ^{
+    NSDictionary<NSString *, id> *diagnosticObjects = diagnosticsData.diagnosticObjects;
+    NSNumber *isDataCollectionDefaultEnabled =
+        diagnosticObjects[kFIRCDIsDataCollectionDefaultEnabledKey];
+    if (isDataCollectionDefaultEnabled && ![isDataCollectionDefaultEnabled boolValue]) {
+      return;
+    }
+
+    // Create the proto.
+    logs_proto_mobilesdk_ios_ICoreConfiguration icore_config =
+        logs_proto_mobilesdk_ios_ICoreConfiguration_init_default;
+
+    icore_config.using_gdt = 1;
+    icore_config.has_using_gdt = 1;
+
+    // Populate the proto with information.
+    FIRPopulateProtoWithInfoFromUserInfoParams(&icore_config, diagnosticObjects);
+    FIRPopulateProtoWithCommonInfoFromApp(&icore_config, diagnosticObjects);
+    FIRPopulateProtoWithInstalledServices(&icore_config);
+    FIRPopulateProtoWithInfoPlistValues(&icore_config);
+    [self setHeartbeatFlagIfNeededToConfig:&icore_config];
+
+    // This log object is capable of converting the proto to bytes.
+    FIRCoreDiagnosticsLog *log = [[FIRCoreDiagnosticsLog alloc] initWithConfig:icore_config];
+
+    // Send the log as a telemetry event.
+    GDTCOREvent *event = [self.transport eventForTransport];
+    event.dataObject = (id<GDTCOREventDataObject>)log;
+    [self.transport sendTelemetryEvent:event];
+  });
+}
+
+#pragma mark - Heartbeat
+
+- (void)setHeartbeatFlagIfNeededToConfig:(logs_proto_mobilesdk_ios_ICoreConfiguration *)config {
+  // Check if need to send a heartbeat.
+  NSDate *currentDate = [NSDate date];
+  NSDate *lastCheckin =
+      [self.heartbeatDateStorage heartbeatDateForTag:kFIRCoreDiagnosticsHeartbeatTag];
+  if (lastCheckin) {
+    // Ensure the previous checkin was on a different date in the past.
+    if ([self isDate:currentDate inSameDayOrBeforeThan:lastCheckin]) {
+      return;
+    }
+  }
+
+  // Update heartbeat sent date.
+  [self.heartbeatDateStorage setHearbeatDate:currentDate forTag:kFIRCoreDiagnosticsHeartbeatTag];
+  // Set the flag.
+  config->sdk_name = logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ICORE;
+  config->has_sdk_name = 1;
+}
+
+- (BOOL)isDate:(NSDate *)date1 inSameDayOrBeforeThan:(NSDate *)date2 {
+  return [[NSCalendar currentCalendar] isDate:date1 inSameDayAsDate:date2] ||
+         [date1 compare:date2] == NSOrderedAscending;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.c b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.c
new file mode 100644
index 0000000..2a9a622
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.c	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.7 */
+
+#include "firebasecore.nanopb.h"
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t logs_proto_mobilesdk_ios_ICoreConfiguration_fields[22] = {
+    PB_FIELD(  1, UENUM   , OPTIONAL, STATIC  , FIRST, logs_proto_mobilesdk_ios_ICoreConfiguration, configuration_type, configuration_type, 0),
+    PB_FIELD(  7, UENUM   , REPEATED, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, sdk_service_installed, configuration_type, 0),
+    PB_FIELD(  9, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, device_model, sdk_service_installed, 0),
+    PB_FIELD( 10, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, app_id, device_model, 0),
+    PB_FIELD( 12, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, bundle_id, app_id, 0),
+    PB_FIELD( 16, UENUM   , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, pod_name, bundle_id, 0),
+    PB_FIELD( 18, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, icore_version, pod_name, 0),
+    PB_FIELD( 19, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, sdk_version, icore_version, 0),
+    PB_FIELD( 20, UENUM   , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, sdk_name, sdk_version, 0),
+    PB_FIELD( 21, INT32   , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, app_count, sdk_name, 0),
+    PB_FIELD( 22, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, os_version, app_count, 0),
+    PB_FIELD( 24, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, min_supported_ios_version, os_version, 0),
+    PB_FIELD( 25, BOOL    , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, use_default_app, min_supported_ios_version, 0),
+    PB_FIELD( 26, BOOL    , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, deployed_in_app_store, use_default_app, 0),
+    PB_FIELD( 27, INT32   , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, dynamic_framework_count, deployed_in_app_store, 0),
+    PB_FIELD( 28, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, apple_framework_version, dynamic_framework_count, 0),
+    PB_FIELD( 29, BOOL    , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, using_zip_file, apple_framework_version, 0),
+    PB_FIELD( 30, UENUM   , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, deployment_type, using_zip_file, 0),
+    PB_FIELD( 31, BYTES   , OPTIONAL, POINTER , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, platform_info, deployment_type, 0),
+    PB_FIELD( 33, BOOL    , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, swizzling_enabled, platform_info, 0),
+    PB_FIELD( 36, BOOL    , OPTIONAL, STATIC  , OTHER, logs_proto_mobilesdk_ios_ICoreConfiguration, using_gdt, swizzling_enabled, 0),
+    PB_LAST_FIELD
+};
+
+
+
+
+
+
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.h b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.h
new file mode 100644
index 0000000..ac92211
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Protogen/nanopb/firebasecore.nanopb.h	
@@ -0,0 +1,193 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.7 */
+
+#ifndef PB_LOGS_PROTO_MOBILESDK_IOS_FIREBASECORE_NANOPB_H_INCLUDED
+#define PB_LOGS_PROTO_MOBILESDK_IOS_FIREBASECORE_NANOPB_H_INCLUDED
+#include <nanopb/pb.h>
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType {
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_UNKNOWN_CONFIGURATION_TYPE = 0,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_CORE = 1,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_SDK = 2
+} logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType;
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_MIN logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_UNKNOWN_CONFIGURATION_TYPE
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_MAX logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_SDK
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_ARRAYSIZE ((logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType)(logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_SDK+1))
+
+typedef enum _logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType {
+    logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_UNKNOWN_BUILD_TYPE = 0,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_INTERNAL = 1,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_EAP = 2,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_PROD = 3
+} logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType;
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_MIN logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_UNKNOWN_BUILD_TYPE
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_MAX logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_PROD
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_ARRAYSIZE ((logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType)(logs_proto_mobilesdk_ios_ICoreConfiguration_BuildType_PROD+1))
+
+typedef enum _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType {
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_UNKNOWN_SDK_SERVICE = 0,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ICORE = 1,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ADMOB = 2,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_APP_INVITE = 3,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_SIGN_IN = 5,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_GCM = 6,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MAPS = 7,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_SCION = 8,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ANALYTICS = 9,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_APP_INDEXING = 10,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_CONFIG = 11,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_DURABLE_DEEP_LINKS = 12,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_CRASH = 13,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_AUTH = 14,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_DATABASE = 15,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_STORAGE = 16,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MESSAGING = 17,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MEASUREMENT = 18,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_REMOTE_CONFIG = 19,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_DYNAMIC_LINKS = 20,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_INVITES = 21,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_AUTH_UI = 22,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_FIRESTORE = 23,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_PERFORMANCE = 24,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_FACE = 26,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_BARCODE = 27,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_TEXT = 28,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_LABEL = 29,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_MODEL_INTERPRETER = 30,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_IN_APP_MESSAGING = 31,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_FUNCTIONS = 32,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_NATURAL_LANGUAGE = 33,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_AUTOML = 34,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_OBJECT_DETECTION = 35
+} logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType;
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MIN logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_UNKNOWN_SDK_SERVICE
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MAX logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_OBJECT_DETECTION
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ARRAYSIZE ((logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType)(logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_ML_VISION_ON_DEVICE_OBJECT_DETECTION+1))
+
+typedef enum _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName {
+    logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_UNKNOWN_POD_NAME = 0,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_GOOGLE = 1,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_FIREBASE = 2
+} logs_proto_mobilesdk_ios_ICoreConfiguration_PodName;
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_MIN logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_UNKNOWN_POD_NAME
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_MAX logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_FIREBASE
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_ARRAYSIZE ((logs_proto_mobilesdk_ios_ICoreConfiguration_PodName)(logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_FIREBASE+1))
+
+typedef enum _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType {
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_UNKNOWN = 0,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_COCOAPODS = 1,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_ZIP_FILE = 2,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_CARTHAGE = 3,
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_SPM = 4
+} logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType;
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_MIN logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_UNKNOWN
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_MAX logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_SPM
+#define _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_ARRAYSIZE ((logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType)(logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_SPM+1))
+
+/* Struct definitions */
+typedef struct _logs_proto_mobilesdk_ios_ICoreConfiguration {
+    bool has_configuration_type;
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType configuration_type;
+    pb_size_t sdk_service_installed_count;
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType *sdk_service_installed;
+    pb_bytes_array_t *device_model;
+    pb_bytes_array_t *app_id;
+    pb_bytes_array_t *bundle_id;
+    bool has_pod_name;
+    logs_proto_mobilesdk_ios_ICoreConfiguration_PodName pod_name;
+    pb_bytes_array_t *icore_version;
+    pb_bytes_array_t *sdk_version;
+    bool has_sdk_name;
+    logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType sdk_name;
+    bool has_app_count;
+    int32_t app_count;
+    pb_bytes_array_t *os_version;
+    pb_bytes_array_t *min_supported_ios_version;
+    bool has_use_default_app;
+    bool use_default_app;
+    bool has_deployed_in_app_store;
+    bool deployed_in_app_store;
+    bool has_dynamic_framework_count;
+    int32_t dynamic_framework_count;
+    pb_bytes_array_t *apple_framework_version;
+    bool has_using_zip_file;
+    bool using_zip_file;
+    bool has_deployment_type;
+    logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType deployment_type;
+    pb_bytes_array_t *platform_info;
+    bool has_swizzling_enabled;
+    bool swizzling_enabled;
+    bool has_using_gdt;
+    bool using_gdt;
+/* @@protoc_insertion_point(struct:logs_proto_mobilesdk_ios_ICoreConfiguration) */
+} logs_proto_mobilesdk_ios_ICoreConfiguration;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_init_default {false, _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_MIN, 0, NULL, NULL, NULL, NULL, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_MIN, NULL, NULL, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MIN, false, 0, NULL, NULL, false, 0, false, 0, false, 0, NULL, false, 0, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_MIN, NULL, false, 0, false, 0}
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_init_zero {false, _logs_proto_mobilesdk_ios_ICoreConfiguration_ConfigurationType_MIN, 0, NULL, NULL, NULL, NULL, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_PodName_MIN, NULL, NULL, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_ServiceType_MIN, false, 0, NULL, NULL, false, 0, false, 0, false, 0, NULL, false, 0, false, _logs_proto_mobilesdk_ios_ICoreConfiguration_DeploymentType_MIN, NULL, false, 0, false, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_pod_name_tag 16
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_configuration_type_tag 1
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_icore_version_tag 18
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_sdk_version_tag 19
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_sdk_service_installed_tag 7
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_sdk_name_tag 20
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_device_model_tag 9
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_os_version_tag 22
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_app_id_tag 10
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_bundle_id_tag 12
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_min_supported_ios_version_tag 24
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_use_default_app_tag 25
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_app_count_tag 21
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_deployed_in_app_store_tag 26
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_dynamic_framework_count_tag 27
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_apple_framework_version_tag 28
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_using_zip_file_tag 29
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_deployment_type_tag 30
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_platform_info_tag 31
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_swizzling_enabled_tag 33
+#define logs_proto_mobilesdk_ios_ICoreConfiguration_using_gdt_tag 36
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t logs_proto_mobilesdk_ios_ICoreConfiguration_fields[22];
+
+/* Maximum encoded size of messages (where known) */
+/* logs_proto_mobilesdk_ios_ICoreConfiguration_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define FIREBASECORE_MESSAGES \
+
+
+#endif
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Public/FIRCoreDiagnostics.h b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Public/FIRCoreDiagnostics.h
new file mode 100644
index 0000000..5076d6b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/Public/FIRCoreDiagnostics.h	
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// There are no actual public headers in the lib. This is a dummy public header to prevent Cocoapods
+// from adding all internal headers as public.
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h
new file mode 100644
index 0000000..69c4072
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsData.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** If present, is a BOOL wrapped in an NSNumber. */
+#define kFIRCDIsDataCollectionDefaultEnabledKey @"FIRCDIsDataCollectionDefaultEnabledKey"
+
+/** If present, is an int32_t wrapped in an NSNumber. */
+#define kFIRCDConfigurationTypeKey @"FIRCDConfigurationTypeKey"
+
+/** If present, is an NSString. */
+#define kFIRCDSdkNameKey @"FIRCDSdkNameKey"
+
+/** If present, is an NSString. */
+#define kFIRCDSdkVersionKey @"FIRCDSdkVersionKey"
+
+/** If present, is an int32_t wrapped in an NSNumber. */
+#define kFIRCDllAppsCountKey @"FIRCDllAppsCountKey"
+
+/** If present, is an NSString. */
+#define kFIRCDGoogleAppIDKey @"FIRCDGoogleAppIDKey"
+
+/** If present, is an NSString. */
+#define kFIRCDBundleIDKey @"FIRCDBundleID"
+
+/** If present, is a BOOL wrapped in an NSNumber. */
+#define kFIRCDUsingOptionsFromDefaultPlistKey @"FIRCDUsingOptionsFromDefaultPlistKey"
+
+/** If present, is an NSString. */
+#define kFIRCDLibraryVersionIDKey @"FIRCDLibraryVersionIDKey"
+
+/** If present, is an NSString. */
+#define kFIRCDFirebaseUserAgentKey @"FIRCDFirebaseUserAgentKey"
+
+/** Defines the interface of a data object needed to log diagnostics data. */
+@protocol FIRCoreDiagnosticsData <NSObject>
+
+@required
+
+/** A dictionary containing data (non-exhaustive) to be logged in diagnostics. */
+@property(nonatomic) NSDictionary<NSString *, id> *diagnosticObjects;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h
new file mode 100644
index 0000000..2b0eb71
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/Interop/CoreDiagnostics/Public/FIRCoreDiagnosticsInterop.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRCoreDiagnosticsData.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Allows the interoperation of FirebaseCore and FirebaseCoreDiagnostics. */
+@protocol FIRCoreDiagnosticsInterop <NSObject>
+
+/** Sends the given diagnostics data.
+ *
+ * @param diagnosticsData The diagnostics data object to send.
+ */
++ (void)sendDiagnosticsData:(id<FIRCoreDiagnosticsData>)diagnosticsData;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/LICENSE b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      outstanding shares, or (iii) beneficial ownership of such entity.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
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+      the terms of any separate license agreement you may have executed
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+   8. Limitation of Liability. In no event and under no legal theory,
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+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/ChattingApp 000/Pods/FirebaseCoreDiagnostics/README.md b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/README.md
new file mode 100644
index 0000000..335fbb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseCoreDiagnostics/README.md	
@@ -0,0 +1,333 @@
+[![Version](https://img.shields.io/cocoapods/v/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+
+[![Actions Status][gh-abtesting-badge]][gh-actions]
+[![Actions Status][gh-appcheck-badge]][gh-actions]
+[![Actions Status][gh-appdistribution-badge]][gh-actions]
+[![Actions Status][gh-auth-badge]][gh-actions]
+[![Actions Status][gh-cocoapods-integration-badge]][gh-actions]
+[![Actions Status][gh-core-badge]][gh-actions]
+[![Actions Status][gh-core-diagnostics-badge]][gh-actions]
+[![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+[![Actions Status][gh-dynamiclinks-badge]][gh-actions]
+[![Actions Status][gh-firebasepod-badge]][gh-actions]
+[![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-components-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
+[![Actions Status][gh-interop-badge]][gh-actions]
+[![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-mlmodeldownloader-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
+[![Actions Status][gh-storage-badge]][gh-actions]
+[![Actions Status][gh-symbolcollision-badge]][gh-actions]
+[![Actions Status][gh-zip-badge]][gh-actions]
+
+# Firebase Apple Open Source Development
+
+This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics
+and FirebaseML.
+
+Firebase is an app development platform with tools to help you build, grow and
+monetize your app. More information about Firebase can be found on the
+[official Firebase website](https://firebase.google.com).
+
+**Note** _FirebaseCombineSwift_ contains support for Apple's Combine framework. This module is currently under development, and not yet supported for use in production environments. Fore more details, please refer to the [docs](FirebaseCombineSwift/README.md).
+
+## Installation
+
+See the subsections below for details about the different installation methods.
+1. [Standard pod install](README.md#standard-pod-install)
+1. [Swift Package Manager](SwiftPackageManager.md)
+1. [Installing from the GitHub repo](README.md#installing-from-github)
+1. [Experimental Carthage](README.md#carthage-ios-only)
+
+### Standard pod install
+
+Go to
+[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).
+
+### Swift Package Manager
+
+Instructions for [Swift Package Manager](https://swift.org/package-manager/) support can be
+found at [SwiftPackageManager.md](SwiftPackageManager.md).
+
+### Installing from GitHub
+
+These instructions can be used to access the Firebase repo at other branches,
+tags, or commits.
+
+#### Background
+
+See
+[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
+for instructions and options about overriding pod source locations.
+
+#### Accessing Firebase Source Snapshots
+
+All of the official releases are tagged in this repo and available via CocoaPods. To access a local
+source snapshot or unreleased branch, use Podfile directives like the following:
+
+To access FirebaseFirestore via a branch:
+```ruby
+pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+```
+
+To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:
+
+```ruby
+pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
+pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
+```
+
+### Carthage (iOS only)
+
+Instructions for the experimental Carthage distribution are at
+[Carthage](Carthage.md).
+
+### Using Firebase from a Framework or a library
+
+[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)
+
+## Development
+
+To develop Firebase software in this repository, ensure that you have at least
+the following software:
+
+  * Xcode 12.2 (or later)
+
+CocoaPods is still the canonical way to develop, but much of the repo now supports
+development with Swift Package Manager.
+
+### CocoaPods
+
+Install
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+```ruby
+pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios
+```
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+Firestore has a self contained Xcode project. See
+[Firestore/README.md](Firestore/README.md).
+
+#### Development for Catalyst
+* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Swift Package Manager
+* To enable test schemes: `./scripts/setup_spm_tests.sh`
+* `open Package.swift` or double click `Package.swift` in Finder.
+* Xcode will open the project
+  * Choose a scheme for a library to build or test suite to run
+  * Choose a target platform by selecting the run destination along with the scheme
+
+### Adding a New Firebase Pod
+
+See [AddNewPod.md](AddNewPod.md).
+
+### Managing Headers and Imports
+
+See [HeadersImports.md](HeadersImports.md).
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@12
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+### Running Sample Apps
+In order to run the sample apps and integration tests, you'll need a valid
+`GoogleService-Info.plist` file. The Firebase Xcode project contains dummy plist
+files without real values, but can be replaced with real plist files. To get your own
+`GoogleService-Info.plist` files:
+
+1. Go to the [Firebase Console](https://console.firebase.google.com/)
+2. Create a new Firebase project, if you don't already have one
+3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
+identifier (e.g. `com.google.Database-Example`)
+4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.
+
+### Coverage Report Generation
+
+See [scripts/code_coverage_report/README.md](scripts/code_coverage_report/README.md).
+
+## Specific Component Instructions
+See the sections below for any special instructions for those components.
+
+### Firebase Auth
+
+If you're doing specific Firebase Auth development, see
+[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
+building and running the FirebaseAuth pod along with various samples and tests.
+
+### Firebase Database
+
+The Firebase Database Integration tests can be run against a locally running Database Emulator
+or against a production instance.
+
+To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
+running the integration test.
+
+To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
+`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
+[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
+running.
+
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
+### Firebase Storage
+
+To run the Storage Integration tests, follow the instructions in
+[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).
+
+#### Push Notifications
+
+Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
+In order to actually test receiving push notifications, you will need to:
+
+1. Change the bundle identifier of the sample app to something you own in your Apple Developer
+account, and enable that App ID for push notifications.
+2. You'll also need to
+[upload your APNs Provider Authentication Key or certificate to the
+Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
+at **Project Settings > Cloud Messaging > [Your Firebase App]**.
+3. Ensure your iOS device is added to your Apple Developer portal as a test device.
+
+#### iOS Simulator
+
+The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
+In order to receive push notifications, you'll have to follow the steps above and run the app on a
+physical device.
+
+## Building with Firebase on Apple platforms
+
+At this time, not all of Firebase's products are available across all Apple platforms. However,
+Firebase is constantly evolving and community supported efforts have helped expand Firebase's support.
+To keep up with the latest info regarding Firebase's support across Apple platforms, refer to
+[this chart](https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform)
+in Firebase's documentation.
+
+### Community Supported Efforts
+
+We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
+very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
+participate in the Firebase community.
+
+#### tvOS, macOS, watchOS and Catalyst
+Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and
+work on tvOS, macOS, watchOS and Catalyst.
+
+For tvOS, see the [Sample](Example/tvOSSample).
+For watchOS, currently only Messaging, Storage and Crashlytics (and their dependencies) have limited
+support. See the [Independent Watch App Sample](Example/watchOSSample).
+
+Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and
+this repository is actively developed primarily for iOS. While we can catch basic unit test issues
+with GitHub Actions, there may be some changes where the SDK no longer works as expected on macOS,
+tvOS or watchOS. If you encounter this, please
+[file an issue](https://github.com/firebase/firebase-ios-sdk/issues).
+
+During app setup in the console, you may get to a step that mentions something like "Checking if the
+app has communicated with our servers". This relies on Analytics and will not work on
+macOS/tvOS/watchOS/Catalyst.
+**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.
+
+#### Additional MacOS and Catalyst Notes
+
+* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
+to Build Settings.
+* For Catalyst, FirebaseFirestore requires signing the
+[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).
+
+#### Additional Crashlytics Notes
+* watchOS has limited support. Due to watchOS restrictions, mach exceptions and signal crashes are
+not recorded. (Crashes in SwiftUI are generated as mach exceptions, so will not be recorded)
+
+## Roadmap
+
+See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
+plans and directions.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository are licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+Your use of Firebase is governed by the
+[Terms of Service for Firebase Services](https://firebase.google.com/terms/).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
+[gh-appcheck-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/app_check/badge.svg
+[gh-appdistribution-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/appdistribution/badge.svg
+[gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
+[gh-cocoapods-integration-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/cocoapods-integration/badge.svg
+[gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
+[gh-core-diagnostics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core-diagnostics/badge.svg
+[gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
+[gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
+[gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
+[gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
+[gh-google-utilities-components-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities-components/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
+[gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
+[gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-mlmodeldownloader-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/mlmodeldownloader/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
+[gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
+[gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
+[gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRAppInternal.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRAppInternal.h
new file mode 100644
index 0000000..6c7d723
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRAppInternal.h	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIRApp.h>
+
+@class FIRComponentContainer;
+@protocol FIRLibrary;
+
+/**
+ * The internal interface to FIRApp. This is meant for first-party integrators, who need to receive
+ * FIRApp notifications, log info about the success or failure of their configuration, and access
+ * other internal functionality of FIRApp.
+ *
+ * TODO(b/28296561): Restructure this header.
+ */
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSInteger, FIRConfigType) {
+  FIRConfigTypeCore = 1,
+  FIRConfigTypeSDK = 2,
+};
+
+extern NSString *const kFIRDefaultAppName;
+extern NSString *const kFIRAppReadyToConfigureSDKNotification;
+extern NSString *const kFIRAppDeleteNotification;
+extern NSString *const kFIRAppIsDefaultAppKey;
+extern NSString *const kFIRAppNameKey;
+extern NSString *const kFIRGoogleAppIDKey;
+extern NSString *const kFirebaseCoreErrorDomain;
+
+/** The NSUserDefaults suite name for FirebaseCore, for those storage locations that use it. */
+extern NSString *const kFirebaseCoreDefaultsSuiteName;
+
+/**
+ * The format string for the User Defaults key used for storing the data collection enabled flag.
+ * This includes formatting to append the Firebase App's name.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledDefaultsKeyFormat;
+
+/**
+ * The plist key used for storing the data collection enabled flag.
+ */
+extern NSString *const kFIRGlobalAppDataCollectionEnabledPlistKey;
+
+/** @var FIRAuthStateDidChangeInternalNotification
+ @brief The name of the @c NSNotificationCenter notification which is posted when the auth state
+ changes (e.g. a new token has been produced, a user logs in or out). The object parameter of
+ the notification is a dictionary possibly containing the key:
+ @c FIRAuthStateDidChangeInternalNotificationTokenKey (the new access token.) If it does not
+ contain this key it indicates a sign-out event took place.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotification;
+
+/** @var FIRAuthStateDidChangeInternalNotificationTokenKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new access token.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationTokenKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationAppKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the FIRApp associated with the auth instance.
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationAppKey;
+
+/** @var FIRAuthStateDidChangeInternalNotificationUIDKey
+ @brief A key present in the dictionary object parameter of the
+ @c FIRAuthStateDidChangeInternalNotification notification. The value associated with this
+ key will contain the new user's UID (or nil if there is no longer a user signed in).
+ */
+extern NSString *const FIRAuthStateDidChangeInternalNotificationUIDKey;
+
+@interface FIRApp ()
+
+/**
+ * A flag indicating if this is the default app (has the default app name).
+ */
+@property(nonatomic, readonly) BOOL isDefaultApp;
+
+/*
+ * The container of interop SDKs for this app.
+ */
+@property(nonatomic) FIRComponentContainer *container;
+
+/**
+ * Checks if the default app is configured without trying to configure it.
+ */
++ (BOOL)isDefaultAppConfigured;
+
+/**
+ * Registers a given third-party library with the given version number to be reported for
+ * analytics.
+ *
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerLibrary:(nonnull NSString *)name withVersion:(nonnull NSString *)version;
+
+/**
+ * Registers a given internal library to be reported for analytics.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name;
+
+/**
+ * Registers a given internal library with the given version number to be reported for
+ * analytics. This should only be used for non-Firebase libraries that have their own versioning
+ * scheme.
+ *
+ * @param library Optional parameter for component registration.
+ * @param name Name of the library.
+ * @param version Version of the library.
+ */
++ (void)registerInternalLibrary:(nonnull Class<FIRLibrary>)library
+                       withName:(nonnull NSString *)name
+                    withVersion:(nonnull NSString *)version;
+
+/**
+ * A concatenated string representing all the third-party libraries and version numbers.
+ */
++ (NSString *)firebaseUserAgent;
+
+/**
+ * Can be used by the unit tests in eack SDK to reset FIRApp. This method is thread unsafe.
+ */
++ (void)resetApps;
+
+/**
+ * Can be used by the unit tests in each SDK to set customized options.
+ */
+- (instancetype)initInstanceWithName:(NSString *)name options:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponent.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponent.h
new file mode 100644
index 0000000..cb51ee7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponent.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provides a system to clean up cached instances returned from the component system.
+NS_SWIFT_NAME(ComponentLifecycleMaintainer)
+@protocol FIRComponentLifecycleMaintainer
+/// The associated app will be deleted, clean up any resources as they are about to be deallocated.
+- (void)appWillBeDeleted:(FIRApp *)app;
+@end
+
+typedef _Nullable id (^FIRComponentCreationBlock)(FIRComponentContainer *container,
+                                                  BOOL *isCacheable)
+    NS_SWIFT_NAME(ComponentCreationBlock);
+
+@class FIRDependency;
+
+/// Describes the timing of instantiation. Note: new components should default to lazy unless there
+/// is a strong reason to be eager.
+typedef NS_ENUM(NSInteger, FIRInstantiationTiming) {
+  FIRInstantiationTimingLazy,
+  FIRInstantiationTimingAlwaysEager,
+  FIRInstantiationTimingEagerInDefaultApp
+} NS_SWIFT_NAME(InstantiationTiming);
+
+/// A component that can be used from other Firebase SDKs.
+NS_SWIFT_NAME(Component)
+@interface FIRComponent : NSObject
+
+/// The protocol describing functionality provided from the Component.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// The timing of instantiation.
+@property(nonatomic, readonly) FIRInstantiationTiming instantiationTiming;
+
+/// An array of dependencies for the component.
+@property(nonatomic, copy, readonly) NSArray<FIRDependency *> *dependencies;
+
+/// A block to instantiate an instance of the component with the appropriate dependencies.
+@property(nonatomic, copy, readonly) FIRComponentCreationBlock creationBlock;
+
+// There's an issue with long NS_SWIFT_NAMES that causes compilation to fail, disable clang-format
+// for the next two methods.
+// clang-format off
+
+/// Creates a component with no dependencies that will be lazily initialized.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:creationBlock:));
+
+/// Creates a component to be registered with the component container.
+///
+/// @param protocol - The protocol describing functionality provided by the component.
+/// @param instantiationTiming - When the component should be initialized. Use .lazy unless there's
+///                              a good reason to be instantiated earlier.
+/// @param dependencies - Any dependencies the `implementingClass` has, optional or required.
+/// @param creationBlock - A block to instantiate the component with a container, and if
+/// @return A component that can be registered with the component container.
++ (instancetype)componentWithProtocol:(Protocol *)protocol
+                  instantiationTiming:(FIRInstantiationTiming)instantiationTiming
+                         dependencies:(NSArray<FIRDependency *> *)dependencies
+                        creationBlock:(FIRComponentCreationBlock)creationBlock
+NS_SWIFT_NAME(init(_:instantiationTiming:dependencies:creationBlock:));
+
+// clang-format on
+
+/// Unavailable.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentContainer.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentContainer.h
new file mode 100644
index 0000000..af18a93
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentContainer.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A type-safe macro to retrieve a component from a container. This should be used to retrieve
+/// components instead of using the container directly.
+#define FIR_COMPONENT(type, container) \
+  [FIRComponentType<id<type>> instanceForProtocol:@protocol(type) inContainer:container]
+
+@class FIRApp;
+
+/// A container that holds different components that are registered via the
+/// `registerAsComponentRegistrant:` call. These classes should conform to `FIRComponentRegistrant`
+/// in order to properly register components for Core.
+NS_SWIFT_NAME(FirebaseComponentContainer)
+@interface FIRComponentContainer : NSObject
+
+/// A weak reference to the app that an instance of the container belongs to.
+@property(nonatomic, weak, readonly) FIRApp *app;
+
+/// Unavailable. Use the `container` property on `FIRApp`.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentType.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentType.h
new file mode 100644
index 0000000..6f2aca7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRComponentType.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRComponentContainer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Do not use directly. A placeholder type in order to provide a macro that will warn users of
+/// mis-matched protocols.
+NS_SWIFT_NAME(ComponentType)
+@interface FIRComponentType<__covariant T> : NSObject
+
+/// Do not use directly. A factory method to retrieve an instance that provides a specific
+/// functionality.
++ (T)instanceForProtocol:(Protocol *)protocol inContainer:(FIRComponentContainer *)container;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h
new file mode 100644
index 0000000..76c0c05
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRCoreDiagnosticsConnector.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRDiagnosticsData;
+@class FIROptions;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Connects FIRCore with the CoreDiagnostics library. */
+@interface FIRCoreDiagnosticsConnector : NSObject
+
+/** Logs FirebaseCore  related data.
+ *
+ * @param options The options object containing data to log.
+ */
++ (void)logCoreTelemetryWithOptions:(FIROptions *)options;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRDependency.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRDependency.h
new file mode 100644
index 0000000..46e9b7e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRDependency.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A dependency on a specific protocol's functionality.
+NS_SWIFT_NAME(Dependency)
+@interface FIRDependency : NSObject
+
+/// The protocol describing functionality being depended on.
+@property(nonatomic, strong, readonly) Protocol *protocol;
+
+/// A flag to specify if the dependency is required or not.
+@property(nonatomic, readonly) BOOL isRequired;
+
+/// Initializes a dependency that is required. Calls `initWithProtocol:isRequired` with `YES` for
+/// the required parameter.
+/// Creates a required dependency on the specified protocol's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol;
+
+/// Creates a dependency on the specified protocol's functionality and specify if it's required for
+/// the class's functionality.
++ (instancetype)dependencyWithProtocol:(Protocol *)protocol isRequired:(BOOL)required;
+
+/// Use `dependencyWithProtocol:isRequired:` instead.
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h
new file mode 100644
index 0000000..9f94256
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRHeartbeatInfo.h	
@@ -0,0 +1,39 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRHeartbeatInfo : NSObject
+
+// Enum representing the different heartbeat codes.
+typedef NS_ENUM(NSInteger, FIRHeartbeatInfoCode) {
+  FIRHeartbeatInfoCodeNone = 0,
+  FIRHeartbeatInfoCodeSDK = 1,
+  FIRHeartbeatInfoCodeGlobal = 2,
+  FIRHeartbeatInfoCodeCombined = 3,
+};
+
+/**
+ * Get heartbeat code required for the sdk.
+ * @param heartbeatTag String representing the sdk heartbeat tag.
+ * @return Heartbeat code indicating whether or not an sdk/global heartbeat
+ * needs to be sent
+ */
++ (FIRHeartbeatInfoCode)heartbeatCodeForTag:(NSString *)heartbeatTag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLibrary.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLibrary.h
new file mode 100644
index 0000000..9575e94
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLibrary.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRLibrary_h
+#define FIRLibrary_h
+
+#import <Foundation/Foundation.h>
+
+@class FIRApp;
+@class FIRComponent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provide an interface to register a library for userAgent logging and availability to others.
+NS_SWIFT_NAME(Library)
+@protocol FIRLibrary
+
+/// Returns one or more FIRComponents that will be registered in
+/// FIRApp and participate in dependency resolution and injection.
++ (NSArray<FIRComponent *> *)componentsToRegister;
+
+@optional
+/// Implement this method if the library needs notifications for lifecycle events. This method is
+/// called when the developer calls `FirebaseApp.configure()`.
++ (void)configureWithApp:(FIRApp *)app;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* FIRLibrary_h */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLogger.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLogger.h
new file mode 100644
index 0000000..b6242ff
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIRLogger.h	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <FirebaseCore/FIRLoggerLevel.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * The Firebase services used in Firebase logger.
+ */
+typedef NSString *const FIRLoggerService;
+
+extern FIRLoggerService kFIRLoggerAnalytics;
+extern FIRLoggerService kFIRLoggerCrash;
+extern FIRLoggerService kFIRLoggerCore;
+extern FIRLoggerService kFIRLoggerRemoteConfig;
+
+/**
+ * The key used to store the logger's error count.
+ */
+extern NSString *const kFIRLoggerErrorCountKey;
+
+/**
+ * The key used to store the logger's warning count.
+ */
+extern NSString *const kFIRLoggerWarningCountKey;
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+/**
+ * Enables or disables Analytics debug mode.
+ * If set to YES, the logging level for Analytics will be set to FIRLoggerLevelDebug.
+ * Enabling the debug mode has no effect if the app is running from App Store.
+ * (required) analytics debug mode flag.
+ */
+void FIRSetAnalyticsDebugMode(BOOL analyticsDebugMode);
+
+/**
+ * Changes the default logging level of FIRLoggerLevelNotice to a user-specified level.
+ * The default level cannot be set above FIRLoggerLevelNotice if the app is running from App Store.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ */
+void FIRSetLoggerLevel(FIRLoggerLevel loggerLevel);
+
+/**
+ * Checks if the specified logger level is loggable given the current settings.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) whether or not this function is called from the Analytics component.
+ */
+BOOL FIRIsLoggableLevel(FIRLoggerLevel loggerLevel, BOOL analyticsComponent);
+
+/**
+ * Logs a message to the Xcode console and the device log. If running from AppStore, will
+ * not log any messages with a level higher than FIRLoggerLevelNotice to avoid log spamming.
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+extern void FIRLogBasic(FIRLoggerLevel level,
+                        FIRLoggerService service,
+                        NSString *messageCode,
+                        NSString *message,
+// On 64-bit simulators, va_list is not a pointer, so cannot be marked nullable
+// See: http://stackoverflow.com/q/29095469
+#if __LP64__ && TARGET_OS_SIMULATOR || TARGET_OS_OSX
+                        va_list args_ptr
+#else
+                        va_list _Nullable args_ptr
+#endif
+);
+
+/**
+ * The following functions accept the following parameters in order:
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting from "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ *            See go/firebase-log-proposal for details.
+ * (required) message string which can be a format string.
+ * (optional) the list of arguments to substitute into the format string.
+ * Example usage:
+ * FIRLogError(kFIRLoggerCore, @"I-COR000001", @"Configuration of %@ failed.", app.name);
+ */
+extern void FIRLogError(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogWarning(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogNotice(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogInfo(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+extern void FIRLogDebug(FIRLoggerService service, NSString *messageCode, NSString *message, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+@interface FIRLoggerWrapper : NSObject
+
+/**
+ * Objective-C wrapper for FIRLogBasic to allow weak linking to FIRLogger
+ * (required) log level (one of the FIRLoggerLevel enum values).
+ * (required) service name of type FIRLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+
++ (void)logWithLevel:(FIRLoggerLevel)level
+         withService:(FIRLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIROptionsInternal.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIROptionsInternal.h
new file mode 100644
index 0000000..8efc5fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FIROptionsInternal.h	
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <FirebaseCore/FIROptions.h>
+
+/**
+ * Keys for the strings in the plist file.
+ */
+extern NSString *const kFIRAPIKey;
+extern NSString *const kFIRTrackingID;
+extern NSString *const kFIRGoogleAppID;
+extern NSString *const kFIRClientID;
+extern NSString *const kFIRGCMSenderID;
+extern NSString *const kFIRAndroidClientID;
+extern NSString *const kFIRDatabaseURL;
+extern NSString *const kFIRStorageBucket;
+extern NSString *const kFIRBundleID;
+extern NSString *const kFIRProjectID;
+
+/**
+ * Keys for the plist file name
+ */
+extern NSString *const kServiceInfoFileName;
+
+extern NSString *const kServiceInfoFileType;
+
+/**
+ * This header file exposes the initialization of FIROptions to internal use.
+ */
+@interface FIROptions ()
+
+/**
+ * resetDefaultOptions and initInternalWithOptionsDictionary: are exposed only for unit tests.
+ */
++ (void)resetDefaultOptions;
+
+/**
+ * Initializes the options with dictionary. The above strings are the keys of the dictionary.
+ * This is the designated initializer.
+ */
+- (instancetype)initInternalWithOptionsDictionary:(NSDictionary *)serviceInfoDictionary
+    NS_DESIGNATED_INITIALIZER;
+
+/**
+ * defaultOptions and defaultOptionsDictionary are exposed in order to be used in FIRApp and
+ * other first party services.
+ */
++ (FIROptions *)defaultOptions;
+
++ (NSDictionary *)defaultOptionsDictionary;
+
+/**
+ * Indicates whether or not Analytics collection was explicitly enabled via a plist flag or at
+ * runtime.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionExplicitlySet;
+
+/**
+ * Whether or not Analytics Collection was enabled. Analytics Collection is enabled unless
+ * explicitly disabled in GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionEnabled;
+
+/**
+ * Whether or not Analytics Collection was completely disabled. If YES, then
+ * isAnalyticsCollectionEnabled will be NO.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsCollectionDeactivated;
+
+/**
+ * The version ID of the client library, e.g. @"1100000".
+ */
+@property(nonatomic, readonly, copy) NSString *libraryVersionID;
+
+/**
+ * The flag indicating whether this object was constructed with the values in the default plist
+ * file.
+ */
+@property(nonatomic) BOOL usingOptionsFromDefaultPlist;
+
+/**
+ * Whether or not Measurement was enabled. Measurement is enabled unless explicitly disabled in
+ * GoogleService-Info.plist.
+ */
+@property(nonatomic, readonly) BOOL isMeasurementEnabled;
+
+/**
+ * Whether or not Analytics was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isAnalyticsEnabled;
+
+/**
+ * Whether or not SignIn was enabled in the developer console.
+ */
+@property(nonatomic, readonly) BOOL isSignInEnabled;
+
+/**
+ * Whether or not editing is locked. This should occur after FIROptions has been set on a FIRApp.
+ */
+@property(nonatomic, getter=isEditingLocked) BOOL editingLocked;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h
new file mode 100644
index 0000000..88d012b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/FirebaseCore/Sources/Private/FirebaseCoreInternal.h	
@@ -0,0 +1,28 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// An umbrella header, for any other libraries in this repo to access Firebase Public and Private
+// headers. Any package manager complexity should be handled here.
+
+#import <FirebaseCore/FirebaseCore.h>
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRComponent.h"
+#import "FirebaseCore/Sources/Private/FIRComponentContainer.h"
+#import "FirebaseCore/Sources/Private/FIRComponentType.h"
+#import "FirebaseCore/Sources/Private/FIRDependency.h"
+#import "FirebaseCore/Sources/Private/FIRHeartbeatInfo.h"
+#import "FirebaseCore/Sources/Private/FIRLibrary.h"
+#import "FirebaseCore/Sources/Private/FIRLogger.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc
new file mode 100644
index 0000000..fdde2fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.cc	
@@ -0,0 +1,217 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "bundle.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t firestore_BundledQuery_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_BundledQuery, parent, parent, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(query_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, firestore_BundledQuery, structured_query, parent, &google_firestore_v1_StructuredQuery_fields),
+    PB_FIELD(  3, UENUM   , SINGULAR, STATIC  , OTHER, firestore_BundledQuery, limit_type, structured_query, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_NamedQuery_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_NamedQuery, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_NamedQuery, bundled_query, name, &firestore_BundledQuery_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_NamedQuery, read_time, bundled_query, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_BundledDocumentMetadata_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_BundledDocumentMetadata, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_BundledDocumentMetadata, read_time, name, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  3, BOOL    , SINGULAR, STATIC  , OTHER, firestore_BundledDocumentMetadata, exists, read_time, 0),
+    PB_FIELD(  4, BYTES   , REPEATED, POINTER , OTHER, firestore_BundledDocumentMetadata, queries, exists, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_BundleMetadata_fields[6] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_BundleMetadata, id, id, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_BundleMetadata, create_time, id, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  3, UINT32  , SINGULAR, STATIC  , OTHER, firestore_BundleMetadata, version, create_time, 0),
+    PB_FIELD(  4, UINT32  , SINGULAR, STATIC  , OTHER, firestore_BundleMetadata, total_documents, version, 0),
+    PB_FIELD(  5, UINT64  , SINGULAR, STATIC  , OTHER, firestore_BundleMetadata, total_bytes, total_documents, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_BundleElement_fields[5] = {
+    PB_ANONYMOUS_ONEOF_FIELD(element_type,   1, MESSAGE , ONEOF, STATIC  , FIRST, firestore_BundleElement, metadata, metadata, &firestore_BundleMetadata_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(element_type,   2, MESSAGE , ONEOF, STATIC  , UNION, firestore_BundleElement, named_query, named_query, &firestore_NamedQuery_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(element_type,   3, MESSAGE , ONEOF, STATIC  , UNION, firestore_BundleElement, document_metadata, document_metadata, &firestore_BundledDocumentMetadata_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(element_type,   4, MESSAGE , ONEOF, STATIC  , UNION, firestore_BundleElement, document, document, &google_firestore_v1_Document_fields),
+    PB_LAST_FIELD
+};
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_BundledQuery, structured_query) < 65536 && pb_membersize(firestore_NamedQuery, bundled_query) < 65536 && pb_membersize(firestore_NamedQuery, read_time) < 65536 && pb_membersize(firestore_BundledDocumentMetadata, read_time) < 65536 && pb_membersize(firestore_BundleMetadata, create_time) < 65536 && pb_membersize(firestore_BundleElement, metadata) < 65536 && pb_membersize(firestore_BundleElement, named_query) < 65536 && pb_membersize(firestore_BundleElement, document_metadata) < 65536 && pb_membersize(firestore_BundleElement, document) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_firestore_BundledQuery_firestore_NamedQuery_firestore_BundledDocumentMetadata_firestore_BundleMetadata_firestore_BundleElement)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_BundledQuery, structured_query) < 256 && pb_membersize(firestore_NamedQuery, bundled_query) < 256 && pb_membersize(firestore_NamedQuery, read_time) < 256 && pb_membersize(firestore_BundledDocumentMetadata, read_time) < 256 && pb_membersize(firestore_BundleMetadata, create_time) < 256 && pb_membersize(firestore_BundleElement, metadata) < 256 && pb_membersize(firestore_BundleElement, named_query) < 256 && pb_membersize(firestore_BundleElement, document_metadata) < 256 && pb_membersize(firestore_BundleElement, document) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_firestore_BundledQuery_firestore_NamedQuery_firestore_BundledDocumentMetadata_firestore_BundleMetadata_firestore_BundleElement)
+#endif
+
+
+const char* EnumToString(
+  firestore_BundledQuery_LimitType value) {
+    switch (value) {
+    case firestore_BundledQuery_LimitType_FIRST:
+        return "FIRST";
+    case firestore_BundledQuery_LimitType_LAST:
+        return "LAST";
+    }
+    return "<unknown enum value>";
+}
+
+std::string firestore_BundledQuery::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BundledQuery", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    switch (which_query_type) {
+    case firestore_BundledQuery_structured_query_tag:
+        result += PrintMessageField("structured_query ",
+            structured_query, indent + 1, true);
+        break;
+    }
+    result += PrintEnumField("limit_type: ", limit_type, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string firestore_NamedQuery::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "NamedQuery", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("bundled_query ",
+        bundled_query, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_BundledDocumentMetadata::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BundledDocumentMetadata", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+    result += PrintPrimitiveField("exists: ", exists, indent + 1, false);
+    for (pb_size_t i = 0; i != queries_count; ++i) {
+        result += PrintPrimitiveField("queries: ",
+            queries[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_BundleMetadata::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BundleMetadata", this);
+    std::string result;
+
+    result += PrintPrimitiveField("id: ", id, indent + 1, false);
+    result += PrintMessageField("create_time ",
+        create_time, indent + 1, false);
+    result += PrintPrimitiveField("version: ", version, indent + 1, false);
+    result += PrintPrimitiveField("total_documents: ",
+        total_documents, indent + 1, false);
+    result += PrintPrimitiveField("total_bytes: ",
+        total_bytes, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_BundleElement::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BundleElement", this);
+    std::string result;
+
+    switch (which_element_type) {
+    case firestore_BundleElement_metadata_tag:
+        result += PrintMessageField("metadata ", metadata, indent + 1, true);
+        break;
+    case firestore_BundleElement_named_query_tag:
+        result += PrintMessageField("named_query ",
+            named_query, indent + 1, true);
+        break;
+    case firestore_BundleElement_document_metadata_tag:
+        result += PrintMessageField("document_metadata ",
+            document_metadata, indent + 1, true);
+        break;
+    case firestore_BundleElement_document_tag:
+        result += PrintMessageField("document ", document, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.h
new file mode 100644
index 0000000..b9dfb72
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/bundle.nanopb.h	
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_FIRESTORE_BUNDLE_NANOPB_H_INCLUDED
+#define PB_FIRESTORE_BUNDLE_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include "google/firestore/v1/query.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _firestore_BundledQuery_LimitType {
+    firestore_BundledQuery_LimitType_FIRST = 0,
+    firestore_BundledQuery_LimitType_LAST = 1
+} firestore_BundledQuery_LimitType;
+#define _firestore_BundledQuery_LimitType_MIN firestore_BundledQuery_LimitType_FIRST
+#define _firestore_BundledQuery_LimitType_MAX firestore_BundledQuery_LimitType_LAST
+#define _firestore_BundledQuery_LimitType_ARRAYSIZE ((firestore_BundledQuery_LimitType)(firestore_BundledQuery_LimitType_LAST+1))
+
+/* Struct definitions */
+typedef struct _firestore_BundleMetadata {
+    pb_bytes_array_t *id;
+    google_protobuf_Timestamp create_time;
+    uint32_t version;
+    uint32_t total_documents;
+    uint64_t total_bytes;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_BundleMetadata) */
+} firestore_BundleMetadata;
+
+typedef struct _firestore_BundledDocumentMetadata {
+    pb_bytes_array_t *name;
+    google_protobuf_Timestamp read_time;
+    bool exists;
+    pb_size_t queries_count;
+    pb_bytes_array_t **queries;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_BundledDocumentMetadata) */
+} firestore_BundledDocumentMetadata;
+
+typedef struct _firestore_BundledQuery {
+    pb_bytes_array_t *parent;
+    pb_size_t which_query_type;
+    union {
+        google_firestore_v1_StructuredQuery structured_query;
+    };
+    firestore_BundledQuery_LimitType limit_type;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_BundledQuery) */
+} firestore_BundledQuery;
+
+typedef struct _firestore_NamedQuery {
+    pb_bytes_array_t *name;
+    firestore_BundledQuery bundled_query;
+    google_protobuf_Timestamp read_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_NamedQuery) */
+} firestore_NamedQuery;
+
+typedef struct _firestore_BundleElement {
+    pb_size_t which_element_type;
+    union {
+        firestore_BundleMetadata metadata;
+        firestore_NamedQuery named_query;
+        firestore_BundledDocumentMetadata document_metadata;
+        google_firestore_v1_Document document;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_BundleElement) */
+} firestore_BundleElement;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define firestore_BundledQuery_init_default      {NULL, 0, {google_firestore_v1_StructuredQuery_init_default}, _firestore_BundledQuery_LimitType_MIN}
+#define firestore_NamedQuery_init_default        {NULL, firestore_BundledQuery_init_default, google_protobuf_Timestamp_init_default}
+#define firestore_BundledDocumentMetadata_init_default {NULL, google_protobuf_Timestamp_init_default, 0, 0, NULL}
+#define firestore_BundleMetadata_init_default    {NULL, google_protobuf_Timestamp_init_default, 0, 0, 0}
+#define firestore_BundleElement_init_default     {0, {firestore_BundleMetadata_init_default}}
+#define firestore_BundledQuery_init_zero         {NULL, 0, {google_firestore_v1_StructuredQuery_init_zero}, _firestore_BundledQuery_LimitType_MIN}
+#define firestore_NamedQuery_init_zero           {NULL, firestore_BundledQuery_init_zero, google_protobuf_Timestamp_init_zero}
+#define firestore_BundledDocumentMetadata_init_zero {NULL, google_protobuf_Timestamp_init_zero, 0, 0, NULL}
+#define firestore_BundleMetadata_init_zero       {NULL, google_protobuf_Timestamp_init_zero, 0, 0, 0}
+#define firestore_BundleElement_init_zero        {0, {firestore_BundleMetadata_init_zero}}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define firestore_BundleMetadata_id_tag          1
+#define firestore_BundleMetadata_create_time_tag 2
+#define firestore_BundleMetadata_version_tag     3
+#define firestore_BundleMetadata_total_documents_tag 4
+#define firestore_BundleMetadata_total_bytes_tag 5
+#define firestore_BundledDocumentMetadata_name_tag 1
+#define firestore_BundledDocumentMetadata_read_time_tag 2
+#define firestore_BundledDocumentMetadata_exists_tag 3
+#define firestore_BundledDocumentMetadata_queries_tag 4
+#define firestore_BundledQuery_structured_query_tag 2
+#define firestore_BundledQuery_parent_tag        1
+#define firestore_BundledQuery_limit_type_tag    3
+#define firestore_NamedQuery_name_tag            1
+#define firestore_NamedQuery_bundled_query_tag   2
+#define firestore_NamedQuery_read_time_tag       3
+#define firestore_BundleElement_metadata_tag     1
+#define firestore_BundleElement_named_query_tag  2
+#define firestore_BundleElement_document_metadata_tag 3
+#define firestore_BundleElement_document_tag     4
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t firestore_BundledQuery_fields[4];
+extern const pb_field_t firestore_NamedQuery_fields[4];
+extern const pb_field_t firestore_BundledDocumentMetadata_fields[5];
+extern const pb_field_t firestore_BundleMetadata_fields[6];
+extern const pb_field_t firestore_BundleElement_fields[5];
+
+/* Maximum encoded size of messages (where known) */
+/* firestore_BundledQuery_size depends on runtime parameters */
+/* firestore_NamedQuery_size depends on runtime parameters */
+/* firestore_BundledDocumentMetadata_size depends on runtime parameters */
+/* firestore_BundleMetadata_size depends on runtime parameters */
+/* firestore_BundleElement_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define BUNDLE_MESSAGES \
+
+
+#endif
+
+const char* EnumToString(firestore_BundledQuery_LimitType value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc
new file mode 100644
index 0000000..93b0b9c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.cc	
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "maybe_document.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t firestore_client_NoDocument_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_client_NoDocument, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_NoDocument, read_time, name, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_client_UnknownDocument_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, firestore_client_UnknownDocument, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_UnknownDocument, version, name, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_client_MaybeDocument_fields[5] = {
+    PB_ANONYMOUS_ONEOF_FIELD(document_type,   1, MESSAGE , ONEOF, STATIC  , FIRST, firestore_client_MaybeDocument, no_document, no_document, &firestore_client_NoDocument_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(document_type,   2, MESSAGE , ONEOF, STATIC  , UNION, firestore_client_MaybeDocument, document, document, &google_firestore_v1_Document_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(document_type,   3, MESSAGE , ONEOF, STATIC  , UNION, firestore_client_MaybeDocument, unknown_document, unknown_document, &firestore_client_UnknownDocument_fields),
+    PB_FIELD(  4, BOOL    , SINGULAR, STATIC  , OTHER, firestore_client_MaybeDocument, has_committed_mutations, unknown_document, 0),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_NoDocument, read_time) < 65536 && pb_membersize(firestore_client_UnknownDocument, version) < 65536 && pb_membersize(firestore_client_MaybeDocument, no_document) < 65536 && pb_membersize(firestore_client_MaybeDocument, document) < 65536 && pb_membersize(firestore_client_MaybeDocument, unknown_document) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_firestore_client_NoDocument_firestore_client_UnknownDocument_firestore_client_MaybeDocument)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_NoDocument, read_time) < 256 && pb_membersize(firestore_client_UnknownDocument, version) < 256 && pb_membersize(firestore_client_MaybeDocument, no_document) < 256 && pb_membersize(firestore_client_MaybeDocument, document) < 256 && pb_membersize(firestore_client_MaybeDocument, unknown_document) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_firestore_client_NoDocument_firestore_client_UnknownDocument_firestore_client_MaybeDocument)
+#endif
+
+
+std::string firestore_client_NoDocument::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "NoDocument", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_client_UnknownDocument::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "UnknownDocument", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("version ", version, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_client_MaybeDocument::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "MaybeDocument", this);
+    std::string result;
+
+    switch (which_document_type) {
+    case firestore_client_MaybeDocument_no_document_tag:
+        result += PrintMessageField("no_document ",
+            no_document, indent + 1, true);
+        break;
+    case firestore_client_MaybeDocument_document_tag:
+        result += PrintMessageField("document ", document, indent + 1, true);
+        break;
+    case firestore_client_MaybeDocument_unknown_document_tag:
+        result += PrintMessageField("unknown_document ",
+            unknown_document, indent + 1, true);
+        break;
+    }
+    result += PrintPrimitiveField("has_committed_mutations: ",
+        has_committed_mutations, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h
new file mode 100644
index 0000000..85dcc18
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h	
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_FIRESTORE_CLIENT_MAYBE_DOCUMENT_NANOPB_H_INCLUDED
+#define PB_FIRESTORE_CLIENT_MAYBE_DOCUMENT_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _firestore_client_NoDocument {
+    pb_bytes_array_t *name;
+    google_protobuf_Timestamp read_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_NoDocument) */
+} firestore_client_NoDocument;
+
+typedef struct _firestore_client_UnknownDocument {
+    pb_bytes_array_t *name;
+    google_protobuf_Timestamp version;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_UnknownDocument) */
+} firestore_client_UnknownDocument;
+
+typedef struct _firestore_client_MaybeDocument {
+    pb_size_t which_document_type;
+    union {
+        firestore_client_NoDocument no_document;
+        google_firestore_v1_Document document;
+        firestore_client_UnknownDocument unknown_document;
+    };
+    bool has_committed_mutations;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_MaybeDocument) */
+} firestore_client_MaybeDocument;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define firestore_client_NoDocument_init_default {NULL, google_protobuf_Timestamp_init_default}
+#define firestore_client_UnknownDocument_init_default {NULL, google_protobuf_Timestamp_init_default}
+#define firestore_client_MaybeDocument_init_default {0, {firestore_client_NoDocument_init_default}, 0}
+#define firestore_client_NoDocument_init_zero    {NULL, google_protobuf_Timestamp_init_zero}
+#define firestore_client_UnknownDocument_init_zero {NULL, google_protobuf_Timestamp_init_zero}
+#define firestore_client_MaybeDocument_init_zero {0, {firestore_client_NoDocument_init_zero}, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define firestore_client_NoDocument_name_tag     1
+#define firestore_client_NoDocument_read_time_tag 2
+#define firestore_client_UnknownDocument_name_tag 1
+#define firestore_client_UnknownDocument_version_tag 2
+#define firestore_client_MaybeDocument_no_document_tag 1
+#define firestore_client_MaybeDocument_document_tag 2
+#define firestore_client_MaybeDocument_unknown_document_tag 3
+#define firestore_client_MaybeDocument_has_committed_mutations_tag 4
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t firestore_client_NoDocument_fields[3];
+extern const pb_field_t firestore_client_UnknownDocument_fields[3];
+extern const pb_field_t firestore_client_MaybeDocument_fields[5];
+
+/* Maximum encoded size of messages (where known) */
+/* firestore_client_NoDocument_size depends on runtime parameters */
+/* firestore_client_UnknownDocument_size depends on runtime parameters */
+/* firestore_client_MaybeDocument_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define MAYBE_DOCUMENT_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc
new file mode 100644
index 0000000..da55504
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc	
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "mutation.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t firestore_client_MutationQueue_fields[3] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, firestore_client_MutationQueue, last_acknowledged_batch_id, last_acknowledged_batch_id, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, firestore_client_MutationQueue, last_stream_token, last_acknowledged_batch_id, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_client_WriteBatch_fields[5] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, firestore_client_WriteBatch, batch_id, batch_id, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, firestore_client_WriteBatch, writes, batch_id, &google_firestore_v1_Write_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_WriteBatch, local_write_time, writes, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, MESSAGE , REPEATED, POINTER , OTHER, firestore_client_WriteBatch, base_writes, local_write_time, &google_firestore_v1_Write_fields),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_WriteBatch, local_write_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_firestore_client_MutationQueue_firestore_client_WriteBatch)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_WriteBatch, local_write_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_firestore_client_MutationQueue_firestore_client_WriteBatch)
+#endif
+
+
+std::string firestore_client_MutationQueue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "MutationQueue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("last_acknowledged_batch_id: ",
+        last_acknowledged_batch_id, indent + 1, false);
+    result += PrintPrimitiveField("last_stream_token: ",
+        last_stream_token, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string firestore_client_WriteBatch::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "WriteBatch", this);
+    std::string result;
+
+    result += PrintPrimitiveField("batch_id: ", batch_id, indent + 1, false);
+    for (pb_size_t i = 0; i != writes_count; ++i) {
+        result += PrintMessageField("writes ", writes[i], indent + 1, true);
+    }
+    result += PrintMessageField("local_write_time ",
+        local_write_time, indent + 1, false);
+    for (pb_size_t i = 0; i != base_writes_count; ++i) {
+        result += PrintMessageField("base_writes ",
+            base_writes[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h
new file mode 100644
index 0000000..bac07f4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h	
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_FIRESTORE_CLIENT_MUTATION_NANOPB_H_INCLUDED
+#define PB_FIRESTORE_CLIENT_MUTATION_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/firestore/v1/write.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _firestore_client_MutationQueue {
+    int32_t last_acknowledged_batch_id;
+    pb_bytes_array_t *last_stream_token;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_MutationQueue) */
+} firestore_client_MutationQueue;
+
+typedef struct _firestore_client_WriteBatch {
+    int32_t batch_id;
+    pb_size_t writes_count;
+    struct _google_firestore_v1_Write *writes;
+    google_protobuf_Timestamp local_write_time;
+    pb_size_t base_writes_count;
+    struct _google_firestore_v1_Write *base_writes;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_WriteBatch) */
+} firestore_client_WriteBatch;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define firestore_client_MutationQueue_init_default {0, NULL}
+#define firestore_client_WriteBatch_init_default {0, 0, NULL, google_protobuf_Timestamp_init_default, 0, NULL}
+#define firestore_client_MutationQueue_init_zero {0, NULL}
+#define firestore_client_WriteBatch_init_zero    {0, 0, NULL, google_protobuf_Timestamp_init_zero, 0, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define firestore_client_MutationQueue_last_acknowledged_batch_id_tag 1
+#define firestore_client_MutationQueue_last_stream_token_tag 2
+#define firestore_client_WriteBatch_batch_id_tag 1
+#define firestore_client_WriteBatch_writes_tag   2
+#define firestore_client_WriteBatch_local_write_time_tag 3
+#define firestore_client_WriteBatch_base_writes_tag 4
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t firestore_client_MutationQueue_fields[3];
+extern const pb_field_t firestore_client_WriteBatch_fields[5];
+
+/* Maximum encoded size of messages (where known) */
+/* firestore_client_MutationQueue_size depends on runtime parameters */
+/* firestore_client_WriteBatch_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define MUTATION_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc
new file mode 100644
index 0000000..0c1cbb6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.cc	
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "target.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t firestore_client_Target_fields[8] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, firestore_client_Target, target_id, target_id, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_Target, snapshot_version, target_id, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  3, BYTES   , SINGULAR, POINTER , OTHER, firestore_client_Target, resume_token, snapshot_version, 0),
+    PB_FIELD(  4, INT64   , SINGULAR, STATIC  , OTHER, firestore_client_Target, last_listen_sequence_number, resume_token, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(target_type,   5, MESSAGE , ONEOF, STATIC  , OTHER, firestore_client_Target, query, last_listen_sequence_number, &google_firestore_v1_Target_QueryTarget_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(target_type,   6, MESSAGE , ONEOF, STATIC  , UNION, firestore_client_Target, documents, last_listen_sequence_number, &google_firestore_v1_Target_DocumentsTarget_fields),
+    PB_FIELD(  7, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_Target, last_limbo_free_snapshot_version, documents, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t firestore_client_TargetGlobal_fields[5] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, firestore_client_TargetGlobal, highest_target_id, highest_target_id, 0),
+    PB_FIELD(  2, INT64   , SINGULAR, STATIC  , OTHER, firestore_client_TargetGlobal, highest_listen_sequence_number, highest_target_id, 0),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_TargetGlobal, last_remote_snapshot_version, highest_listen_sequence_number, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, INT32   , SINGULAR, STATIC  , OTHER, firestore_client_TargetGlobal, target_count, last_remote_snapshot_version, 0),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_Target, query) < 65536 && pb_membersize(firestore_client_Target, documents) < 65536 && pb_membersize(firestore_client_Target, snapshot_version) < 65536 && pb_membersize(firestore_client_Target, last_limbo_free_snapshot_version) < 65536 && pb_membersize(firestore_client_TargetGlobal, last_remote_snapshot_version) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_firestore_client_Target_firestore_client_TargetGlobal)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(firestore_client_Target, query) < 256 && pb_membersize(firestore_client_Target, documents) < 256 && pb_membersize(firestore_client_Target, snapshot_version) < 256 && pb_membersize(firestore_client_Target, last_limbo_free_snapshot_version) < 256 && pb_membersize(firestore_client_TargetGlobal, last_remote_snapshot_version) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_firestore_client_Target_firestore_client_TargetGlobal)
+#endif
+
+
+std::string firestore_client_Target::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Target", this);
+    std::string result;
+
+    result += PrintPrimitiveField("target_id: ", target_id, indent + 1, false);
+    result += PrintMessageField("snapshot_version ",
+        snapshot_version, indent + 1, false);
+    result += PrintPrimitiveField("resume_token: ",
+        resume_token, indent + 1, false);
+    result += PrintPrimitiveField("last_listen_sequence_number: ",
+        last_listen_sequence_number, indent + 1, false);
+    switch (which_target_type) {
+    case firestore_client_Target_query_tag:
+        result += PrintMessageField("query ", query, indent + 1, true);
+        break;
+    case firestore_client_Target_documents_tag:
+        result += PrintMessageField("documents ", documents, indent + 1, true);
+        break;
+    }
+    result += PrintMessageField("last_limbo_free_snapshot_version ",
+        last_limbo_free_snapshot_version, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string firestore_client_TargetGlobal::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "TargetGlobal", this);
+    std::string result;
+
+    result += PrintPrimitiveField("highest_target_id: ",
+        highest_target_id, indent + 1, false);
+    result += PrintPrimitiveField("highest_listen_sequence_number: ",
+        highest_listen_sequence_number, indent + 1, false);
+    result += PrintMessageField("last_remote_snapshot_version ",
+        last_remote_snapshot_version, indent + 1, false);
+    result += PrintPrimitiveField("target_count: ",
+        target_count, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.h
new file mode 100644
index 0000000..c2d4e50
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/firestore/local/target.nanopb.h	
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_FIRESTORE_CLIENT_TARGET_NANOPB_H_INCLUDED
+#define PB_FIRESTORE_CLIENT_TARGET_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/firestore/v1/firestore.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _firestore_client_Target {
+    int32_t target_id;
+    google_protobuf_Timestamp snapshot_version;
+    pb_bytes_array_t *resume_token;
+    int64_t last_listen_sequence_number;
+    pb_size_t which_target_type;
+    union {
+        google_firestore_v1_Target_QueryTarget query;
+        google_firestore_v1_Target_DocumentsTarget documents;
+    };
+    google_protobuf_Timestamp last_limbo_free_snapshot_version;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_Target) */
+} firestore_client_Target;
+
+typedef struct _firestore_client_TargetGlobal {
+    int32_t highest_target_id;
+    int64_t highest_listen_sequence_number;
+    google_protobuf_Timestamp last_remote_snapshot_version;
+    int32_t target_count;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:firestore_client_TargetGlobal) */
+} firestore_client_TargetGlobal;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define firestore_client_Target_init_default     {0, google_protobuf_Timestamp_init_default, NULL, 0, 0, {google_firestore_v1_Target_QueryTarget_init_default}, google_protobuf_Timestamp_init_default}
+#define firestore_client_TargetGlobal_init_default {0, 0, google_protobuf_Timestamp_init_default, 0}
+#define firestore_client_Target_init_zero        {0, google_protobuf_Timestamp_init_zero, NULL, 0, 0, {google_firestore_v1_Target_QueryTarget_init_zero}, google_protobuf_Timestamp_init_zero}
+#define firestore_client_TargetGlobal_init_zero  {0, 0, google_protobuf_Timestamp_init_zero, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define firestore_client_Target_query_tag        5
+#define firestore_client_Target_documents_tag    6
+#define firestore_client_Target_target_id_tag    1
+#define firestore_client_Target_snapshot_version_tag 2
+#define firestore_client_Target_resume_token_tag 3
+#define firestore_client_Target_last_listen_sequence_number_tag 4
+#define firestore_client_Target_last_limbo_free_snapshot_version_tag 7
+#define firestore_client_TargetGlobal_highest_target_id_tag 1
+#define firestore_client_TargetGlobal_highest_listen_sequence_number_tag 2
+#define firestore_client_TargetGlobal_last_remote_snapshot_version_tag 3
+#define firestore_client_TargetGlobal_target_count_tag 4
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t firestore_client_Target_fields[8];
+extern const pb_field_t firestore_client_TargetGlobal_fields[5];
+
+/* Maximum encoded size of messages (where known) */
+/* firestore_client_Target_size depends on runtime parameters */
+#define firestore_client_TargetGlobal_size       57
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define TARGET_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc
new file mode 100644
index 0000000..bf529c7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.cc	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "annotations.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+#error Field descriptor for google_api_http_struct.http is too large. Define PB_FIELD_32BIT to fix this.
+#endif
+
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.h
new file mode 100644
index 0000000..d7a8512
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/annotations.nanopb.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_API_ANNOTATIONS_NANOPB_H_INCLUDED
+#define PB_GOOGLE_API_ANNOTATIONS_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/http.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Extensions */
+/* Extension field google_api_http was skipped because only "optional"
+   type of extension fields is currently supported. */
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.cc
new file mode 100644
index 0000000..004c4df
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.cc	
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "http.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_api_Http_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_api_Http, rules, rules, &google_api_HttpRule_fields),
+    PB_FIELD(  2, BOOL    , SINGULAR, STATIC  , OTHER, google_api_Http, fully_decode_reserved_expansion, rules, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_api_HttpRule_fields[10] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_api_HttpRule, selector, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   2, BYTES   , ONEOF, POINTER , OTHER, google_api_HttpRule, get, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   3, BYTES   , ONEOF, POINTER , UNION, google_api_HttpRule, put, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   4, BYTES   , ONEOF, POINTER , UNION, google_api_HttpRule, post, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   5, BYTES   , ONEOF, POINTER , UNION, google_api_HttpRule, delete_, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   6, BYTES   , ONEOF, POINTER , UNION, google_api_HttpRule, patch, selector, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(pattern,   8, MESSAGE , ONEOF, STATIC  , UNION, google_api_HttpRule, custom, selector, &google_api_CustomHttpPattern_fields),
+    PB_FIELD(  7, BYTES   , SINGULAR, POINTER , OTHER, google_api_HttpRule, body, custom, 0),
+    PB_FIELD( 11, MESSAGE , REPEATED, POINTER , OTHER, google_api_HttpRule, additional_bindings, body, &google_api_HttpRule_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_api_CustomHttpPattern_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_api_CustomHttpPattern, kind, kind, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_api_CustomHttpPattern, path, kind, 0),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_api_HttpRule, custom) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_api_Http_google_api_HttpRule_google_api_CustomHttpPattern)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_api_HttpRule, custom) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_api_Http_google_api_HttpRule_google_api_CustomHttpPattern)
+#endif
+
+
+std::string google_api_Http::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Http", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != rules_count; ++i) {
+        result += PrintMessageField("rules ", rules[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("fully_decode_reserved_expansion: ",
+        fully_decode_reserved_expansion, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_api_HttpRule::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "HttpRule", this);
+    std::string result;
+
+    result += PrintPrimitiveField("selector: ", selector, indent + 1, false);
+    switch (which_pattern) {
+    case google_api_HttpRule_get_tag:
+        result += PrintPrimitiveField("get: ", get, indent + 1, true);
+        break;
+    case google_api_HttpRule_put_tag:
+        result += PrintPrimitiveField("put: ", put, indent + 1, true);
+        break;
+    case google_api_HttpRule_post_tag:
+        result += PrintPrimitiveField("post: ", post, indent + 1, true);
+        break;
+    case google_api_HttpRule_delete_tag:
+        result += PrintPrimitiveField("delete: ", delete_, indent + 1, true);
+        break;
+    case google_api_HttpRule_patch_tag:
+        result += PrintPrimitiveField("patch: ", patch, indent + 1, true);
+        break;
+    case google_api_HttpRule_custom_tag:
+        result += PrintMessageField("custom ", custom, indent + 1, true);
+        break;
+    }
+    result += PrintPrimitiveField("body: ", body, indent + 1, false);
+    for (pb_size_t i = 0; i != additional_bindings_count; ++i) {
+        result += PrintMessageField("additional_bindings ",
+            additional_bindings[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_api_CustomHttpPattern::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CustomHttpPattern", this);
+    std::string result;
+
+    result += PrintPrimitiveField("kind: ", kind, indent + 1, false);
+    result += PrintPrimitiveField("path: ", path, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.h
new file mode 100644
index 0000000..594c51f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/api/http.nanopb.h	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_API_HTTP_NANOPB_H_INCLUDED
+#define PB_GOOGLE_API_HTTP_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_api_CustomHttpPattern {
+    pb_bytes_array_t *kind;
+    pb_bytes_array_t *path;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_api_CustomHttpPattern) */
+} google_api_CustomHttpPattern;
+
+typedef struct _google_api_Http {
+    pb_size_t rules_count;
+    struct _google_api_HttpRule *rules;
+    bool fully_decode_reserved_expansion;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_api_Http) */
+} google_api_Http;
+
+typedef struct _google_api_HttpRule {
+    pb_bytes_array_t *selector;
+    pb_size_t which_pattern;
+    union {
+        pb_bytes_array_t *get;
+        pb_bytes_array_t *put;
+        pb_bytes_array_t *post;
+        pb_bytes_array_t *delete_;
+        pb_bytes_array_t *patch;
+        google_api_CustomHttpPattern custom;
+    };
+    pb_bytes_array_t *body;
+    pb_size_t additional_bindings_count;
+    struct _google_api_HttpRule *additional_bindings;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_api_HttpRule) */
+} google_api_HttpRule;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_api_Http_init_default             {0, NULL, 0}
+#define google_api_HttpRule_init_default         {NULL, 0, {NULL}, NULL, 0, NULL}
+#define google_api_CustomHttpPattern_init_default {NULL, NULL}
+#define google_api_Http_init_zero                {0, NULL, 0}
+#define google_api_HttpRule_init_zero            {NULL, 0, {NULL}, NULL, 0, NULL}
+#define google_api_CustomHttpPattern_init_zero   {NULL, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_api_CustomHttpPattern_kind_tag    1
+#define google_api_CustomHttpPattern_path_tag    2
+#define google_api_Http_rules_tag                1
+#define google_api_Http_fully_decode_reserved_expansion_tag 2
+#define google_api_HttpRule_get_tag              2
+#define google_api_HttpRule_put_tag              3
+#define google_api_HttpRule_post_tag             4
+#define google_api_HttpRule_delete_tag           5
+#define google_api_HttpRule_patch_tag            6
+#define google_api_HttpRule_custom_tag           8
+#define google_api_HttpRule_selector_tag         1
+#define google_api_HttpRule_body_tag             7
+#define google_api_HttpRule_additional_bindings_tag 11
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_api_Http_fields[3];
+extern const pb_field_t google_api_HttpRule_fields[10];
+extern const pb_field_t google_api_CustomHttpPattern_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_api_Http_size depends on runtime parameters */
+/* google_api_HttpRule_size depends on runtime parameters */
+/* google_api_CustomHttpPattern_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define HTTP_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc
new file mode 100644
index 0000000..39b36a6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.cc	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "common.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_DocumentMask_fields[2] = {
+    PB_FIELD(  1, BYTES   , REPEATED, POINTER , FIRST, google_firestore_v1_DocumentMask, field_paths, field_paths, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Precondition_fields[3] = {
+    PB_ANONYMOUS_ONEOF_FIELD(condition_type,   1, BOOL    , ONEOF, STATIC  , FIRST, google_firestore_v1_Precondition, exists, exists, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(condition_type,   2, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Precondition, update_time, update_time, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_TransactionOptions_fields[3] = {
+    PB_ANONYMOUS_ONEOF_FIELD(mode,   2, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_TransactionOptions, read_only, read_only, &google_firestore_v1_TransactionOptions_ReadOnly_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(mode,   3, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_TransactionOptions, read_write, read_write, &google_firestore_v1_TransactionOptions_ReadWrite_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_TransactionOptions_ReadWrite_fields[2] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_TransactionOptions_ReadWrite, retry_transaction, retry_transaction, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_TransactionOptions_ReadOnly_fields[2] = {
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   2, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_TransactionOptions_ReadOnly, read_time, read_time, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Precondition, update_time) < 65536 && pb_membersize(google_firestore_v1_TransactionOptions, read_only) < 65536 && pb_membersize(google_firestore_v1_TransactionOptions, read_write) < 65536 && pb_membersize(google_firestore_v1_TransactionOptions_ReadOnly, read_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_DocumentMask_google_firestore_v1_Precondition_google_firestore_v1_TransactionOptions_google_firestore_v1_TransactionOptions_ReadWrite_google_firestore_v1_TransactionOptions_ReadOnly)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Precondition, update_time) < 256 && pb_membersize(google_firestore_v1_TransactionOptions, read_only) < 256 && pb_membersize(google_firestore_v1_TransactionOptions, read_write) < 256 && pb_membersize(google_firestore_v1_TransactionOptions_ReadOnly, read_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_DocumentMask_google_firestore_v1_Precondition_google_firestore_v1_TransactionOptions_google_firestore_v1_TransactionOptions_ReadWrite_google_firestore_v1_TransactionOptions_ReadOnly)
+#endif
+
+
+std::string google_firestore_v1_DocumentMask::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentMask", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != field_paths_count; ++i) {
+        result += PrintPrimitiveField("field_paths: ",
+            field_paths[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Precondition::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Precondition", this);
+    std::string result;
+
+    switch (which_condition_type) {
+    case google_firestore_v1_Precondition_exists_tag:
+        result += PrintPrimitiveField("exists: ", exists, indent + 1, true);
+        break;
+    case google_firestore_v1_Precondition_update_time_tag:
+        result += PrintMessageField("update_time ",
+            update_time, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_TransactionOptions::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "TransactionOptions", this);
+    std::string result;
+
+    switch (which_mode) {
+    case google_firestore_v1_TransactionOptions_read_only_tag:
+        result += PrintMessageField("read_only ", read_only, indent + 1, true);
+        break;
+    case google_firestore_v1_TransactionOptions_read_write_tag:
+        result += PrintMessageField("read_write ",
+            read_write, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_TransactionOptions_ReadWrite::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ReadWrite", this);
+    std::string result;
+
+    result += PrintPrimitiveField("retry_transaction: ",
+        retry_transaction, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_TransactionOptions_ReadOnly::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ReadOnly", this);
+    std::string result;
+
+    switch (which_consistency_selector) {
+    case google_firestore_v1_TransactionOptions_ReadOnly_read_time_tag:
+        result += PrintMessageField("read_time ", read_time, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h
new file mode 100644
index 0000000..9a9cea3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/common.nanopb.h	
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_COMMON_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_COMMON_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/annotations.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_DocumentMask {
+    pb_size_t field_paths_count;
+    pb_bytes_array_t **field_paths;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentMask) */
+} google_firestore_v1_DocumentMask;
+
+typedef struct _google_firestore_v1_TransactionOptions_ReadWrite {
+    pb_bytes_array_t *retry_transaction;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_TransactionOptions_ReadWrite) */
+} google_firestore_v1_TransactionOptions_ReadWrite;
+
+typedef struct _google_firestore_v1_Precondition {
+    pb_size_t which_condition_type;
+    union {
+        bool exists;
+        google_protobuf_Timestamp update_time;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Precondition) */
+} google_firestore_v1_Precondition;
+
+typedef struct _google_firestore_v1_TransactionOptions_ReadOnly {
+    pb_size_t which_consistency_selector;
+    union {
+        google_protobuf_Timestamp read_time;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_TransactionOptions_ReadOnly) */
+} google_firestore_v1_TransactionOptions_ReadOnly;
+
+typedef struct _google_firestore_v1_TransactionOptions {
+    pb_size_t which_mode;
+    union {
+        google_firestore_v1_TransactionOptions_ReadOnly read_only;
+        google_firestore_v1_TransactionOptions_ReadWrite read_write;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_TransactionOptions) */
+} google_firestore_v1_TransactionOptions;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_DocumentMask_init_default {0, NULL}
+#define google_firestore_v1_Precondition_init_default {0, {0}}
+#define google_firestore_v1_TransactionOptions_init_default {0, {google_firestore_v1_TransactionOptions_ReadOnly_init_default}}
+#define google_firestore_v1_TransactionOptions_ReadWrite_init_default {NULL}
+#define google_firestore_v1_TransactionOptions_ReadOnly_init_default {0, {google_protobuf_Timestamp_init_default}}
+#define google_firestore_v1_DocumentMask_init_zero {0, NULL}
+#define google_firestore_v1_Precondition_init_zero {0, {0}}
+#define google_firestore_v1_TransactionOptions_init_zero {0, {google_firestore_v1_TransactionOptions_ReadOnly_init_zero}}
+#define google_firestore_v1_TransactionOptions_ReadWrite_init_zero {NULL}
+#define google_firestore_v1_TransactionOptions_ReadOnly_init_zero {0, {google_protobuf_Timestamp_init_zero}}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_DocumentMask_field_paths_tag 1
+#define google_firestore_v1_TransactionOptions_ReadWrite_retry_transaction_tag 1
+#define google_firestore_v1_Precondition_exists_tag 1
+#define google_firestore_v1_Precondition_update_time_tag 2
+#define google_firestore_v1_TransactionOptions_ReadOnly_read_time_tag 2
+#define google_firestore_v1_TransactionOptions_read_only_tag 2
+#define google_firestore_v1_TransactionOptions_read_write_tag 3
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_DocumentMask_fields[2];
+extern const pb_field_t google_firestore_v1_Precondition_fields[3];
+extern const pb_field_t google_firestore_v1_TransactionOptions_fields[3];
+extern const pb_field_t google_firestore_v1_TransactionOptions_ReadWrite_fields[2];
+extern const pb_field_t google_firestore_v1_TransactionOptions_ReadOnly_fields[2];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_DocumentMask_size depends on runtime parameters */
+#define google_firestore_v1_Precondition_size    24
+/* google_firestore_v1_TransactionOptions_size depends on runtime parameters */
+/* google_firestore_v1_TransactionOptions_ReadWrite_size depends on runtime parameters */
+#define google_firestore_v1_TransactionOptions_ReadOnly_size 24
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define COMMON_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc
new file mode 100644
index 0000000..41dee0a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.cc	
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "document.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_Document_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Document, name, name, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Document, fields, name, &google_firestore_v1_Document_FieldsEntry_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_Document, create_time, fields, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_Document, update_time, create_time, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Document_FieldsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Document_FieldsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_Document_FieldsEntry, value, key, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Value_fields[12] = {
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   1, BOOL    , ONEOF, STATIC  , FIRST, google_firestore_v1_Value, boolean_value, boolean_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   2, INT64   , ONEOF, STATIC  , UNION, google_firestore_v1_Value, integer_value, integer_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   3, DOUBLE  , ONEOF, STATIC  , UNION, google_firestore_v1_Value, double_value, double_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   5, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, reference_value, reference_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, map_value, map_value, &google_firestore_v1_MapValue_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   8, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, geo_point_value, geo_point_value, &google_type_LatLng_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,   9, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, array_value, array_value, &google_firestore_v1_ArrayValue_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  10, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Value, timestamp_value, timestamp_value, &google_protobuf_Timestamp_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  11, UENUM   , ONEOF, STATIC  , UNION, google_firestore_v1_Value, null_value, null_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  17, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, string_value, string_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(value_type,  18, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Value, bytes_value, bytes_value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ArrayValue_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_ArrayValue, values, values, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_MapValue_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_MapValue, fields, fields, &google_firestore_v1_MapValue_FieldsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_MapValue_FieldsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_MapValue_FieldsEntry, value, key, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 65536 && pb_membersize(google_firestore_v1_Document, update_time) < 65536 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 65536 && pb_membersize(google_firestore_v1_Value, map_value) < 65536 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 65536 && pb_membersize(google_firestore_v1_Value, array_value) < 65536 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 65536 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Document, create_time) < 256 && pb_membersize(google_firestore_v1_Document, update_time) < 256 && pb_membersize(google_firestore_v1_Document_FieldsEntry, value) < 256 && pb_membersize(google_firestore_v1_Value, map_value) < 256 && pb_membersize(google_firestore_v1_Value, geo_point_value) < 256 && pb_membersize(google_firestore_v1_Value, array_value) < 256 && pb_membersize(google_firestore_v1_Value, timestamp_value) < 256 && pb_membersize(google_firestore_v1_MapValue_FieldsEntry, value) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_Document_google_firestore_v1_Document_FieldsEntry_google_firestore_v1_Value_google_firestore_v1_ArrayValue_google_firestore_v1_MapValue_google_firestore_v1_MapValue_FieldsEntry)
+#endif
+
+
+/* On some platforms (such as AVR), double is really float.
+ * These are not directly supported by nanopb, but see example_avr_double.
+ * To get rid of this error, remove any double fields from your .proto.
+ */
+PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)
+
+std::string google_firestore_v1_Document::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Document", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    for (pb_size_t i = 0; i != fields_count; ++i) {
+        result += PrintMessageField("fields ", fields[i], indent + 1, true);
+    }
+    result += PrintMessageField("create_time ",
+        create_time, indent + 1, false);
+    if (has_update_time) {
+        result += PrintMessageField("update_time ",
+            update_time, indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_Document_FieldsEntry::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldsEntry", this);
+    std::string result;
+
+    result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Value", this);
+    std::string result;
+
+    switch (which_value_type) {
+    case google_firestore_v1_Value_boolean_value_tag:
+        result += PrintPrimitiveField("boolean_value: ",
+            boolean_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_integer_value_tag:
+        result += PrintPrimitiveField("integer_value: ",
+            integer_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_double_value_tag:
+        result += PrintPrimitiveField("double_value: ",
+            double_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_reference_value_tag:
+        result += PrintPrimitiveField("reference_value: ",
+            reference_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_map_value_tag:
+        result += PrintMessageField("map_value ", map_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_geo_point_value_tag:
+        result += PrintMessageField("geo_point_value ",
+            geo_point_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_array_value_tag:
+        result += PrintMessageField("array_value ",
+            array_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_timestamp_value_tag:
+        result += PrintMessageField("timestamp_value ",
+            timestamp_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_null_value_tag:
+        result += PrintEnumField("null_value: ", null_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_string_value_tag:
+        result += PrintPrimitiveField("string_value: ",
+            string_value, indent + 1, true);
+        break;
+    case google_firestore_v1_Value_bytes_value_tag:
+        result += PrintPrimitiveField("bytes_value: ",
+            bytes_value, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_ArrayValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ArrayValue", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != values_count; ++i) {
+        result += PrintMessageField("values ", values[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_MapValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "MapValue", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != fields_count; ++i) {
+        result += PrintMessageField("fields ", fields[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_MapValue_FieldsEntry::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldsEntry", this);
+    std::string result;
+
+    result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h
new file mode 100644
index 0000000..b06264f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h	
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_DOCUMENT_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_DOCUMENT_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/annotations.nanopb.h"
+
+#include "google/protobuf/struct.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include "google/type/latlng.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_ArrayValue {
+    pb_size_t values_count;
+    struct _google_firestore_v1_Value *values;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ArrayValue) */
+} google_firestore_v1_ArrayValue;
+
+typedef struct _google_firestore_v1_MapValue {
+    pb_size_t fields_count;
+    struct _google_firestore_v1_MapValue_FieldsEntry *fields;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_MapValue) */
+} google_firestore_v1_MapValue;
+
+typedef struct _google_firestore_v1_Document {
+    pb_bytes_array_t *name;
+    pb_size_t fields_count;
+    struct _google_firestore_v1_Document_FieldsEntry *fields;
+    google_protobuf_Timestamp create_time;
+    bool has_update_time;
+    google_protobuf_Timestamp update_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Document) */
+} google_firestore_v1_Document;
+
+typedef struct _google_firestore_v1_Value {
+    pb_size_t which_value_type;
+    union {
+        bool boolean_value;
+        int64_t integer_value;
+        double double_value;
+        pb_bytes_array_t *reference_value;
+        google_firestore_v1_MapValue map_value;
+        google_type_LatLng geo_point_value;
+        google_firestore_v1_ArrayValue array_value;
+        google_protobuf_Timestamp timestamp_value;
+        google_protobuf_NullValue null_value;
+        pb_bytes_array_t *string_value;
+        pb_bytes_array_t *bytes_value;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Value) */
+} google_firestore_v1_Value;
+
+typedef struct _google_firestore_v1_Document_FieldsEntry {
+    pb_bytes_array_t *key;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Document_FieldsEntry) */
+} google_firestore_v1_Document_FieldsEntry;
+
+typedef struct _google_firestore_v1_MapValue_FieldsEntry {
+    pb_bytes_array_t *key;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_MapValue_FieldsEntry) */
+} google_firestore_v1_MapValue_FieldsEntry;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_Document_init_default {NULL, 0, NULL, google_protobuf_Timestamp_init_default, false, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_Document_FieldsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_Value_init_default   {0, {0}}
+#define google_firestore_v1_ArrayValue_init_default {0, NULL}
+#define google_firestore_v1_MapValue_init_default {0, NULL}
+#define google_firestore_v1_MapValue_FieldsEntry_init_default {NULL, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_Document_init_zero   {NULL, 0, NULL, google_protobuf_Timestamp_init_zero, false, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_Document_FieldsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
+#define google_firestore_v1_Value_init_zero      {0, {0}}
+#define google_firestore_v1_ArrayValue_init_zero {0, NULL}
+#define google_firestore_v1_MapValue_init_zero   {0, NULL}
+#define google_firestore_v1_MapValue_FieldsEntry_init_zero {NULL, google_firestore_v1_Value_init_zero}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_ArrayValue_values_tag 1
+#define google_firestore_v1_MapValue_fields_tag  1
+#define google_firestore_v1_Document_name_tag    1
+#define google_firestore_v1_Document_fields_tag  2
+#define google_firestore_v1_Document_create_time_tag 3
+#define google_firestore_v1_Document_update_time_tag 4
+#define google_firestore_v1_Value_boolean_value_tag 1
+#define google_firestore_v1_Value_integer_value_tag 2
+#define google_firestore_v1_Value_double_value_tag 3
+#define google_firestore_v1_Value_reference_value_tag 5
+#define google_firestore_v1_Value_map_value_tag  6
+#define google_firestore_v1_Value_geo_point_value_tag 8
+#define google_firestore_v1_Value_array_value_tag 9
+#define google_firestore_v1_Value_timestamp_value_tag 10
+#define google_firestore_v1_Value_null_value_tag 11
+#define google_firestore_v1_Value_string_value_tag 17
+#define google_firestore_v1_Value_bytes_value_tag 18
+#define google_firestore_v1_Document_FieldsEntry_key_tag 1
+#define google_firestore_v1_Document_FieldsEntry_value_tag 2
+#define google_firestore_v1_MapValue_FieldsEntry_key_tag 1
+#define google_firestore_v1_MapValue_FieldsEntry_value_tag 2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_Document_fields[5];
+extern const pb_field_t google_firestore_v1_Document_FieldsEntry_fields[3];
+extern const pb_field_t google_firestore_v1_Value_fields[12];
+extern const pb_field_t google_firestore_v1_ArrayValue_fields[2];
+extern const pb_field_t google_firestore_v1_MapValue_fields[2];
+extern const pb_field_t google_firestore_v1_MapValue_FieldsEntry_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_Document_size depends on runtime parameters */
+/* google_firestore_v1_Document_FieldsEntry_size depends on runtime parameters */
+/* google_firestore_v1_Value_size depends on runtime parameters */
+/* google_firestore_v1_ArrayValue_size depends on runtime parameters */
+/* google_firestore_v1_MapValue_size depends on runtime parameters */
+/* google_firestore_v1_MapValue_FieldsEntry_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define DOCUMENT_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc
new file mode 100644
index 0000000..9b16307
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.cc	
@@ -0,0 +1,849 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "firestore.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_GetDocumentRequest_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_GetDocumentRequest, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_GetDocumentRequest, mask, name, &google_firestore_v1_DocumentMask_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   3, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_GetDocumentRequest, transaction, mask, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   5, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_GetDocumentRequest, read_time, mask, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListDocumentsRequest_fields[10] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ListDocumentsRequest, parent, parent, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListDocumentsRequest, collection_id, parent, 0),
+    PB_FIELD(  3, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_ListDocumentsRequest, page_size, collection_id, 0),
+    PB_FIELD(  4, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListDocumentsRequest, page_token, page_size, 0),
+    PB_FIELD(  6, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListDocumentsRequest, order_by, page_token, 0),
+    PB_FIELD(  7, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_ListDocumentsRequest, mask, order_by, &google_firestore_v1_DocumentMask_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   8, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_ListDocumentsRequest, transaction, mask, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,  10, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ListDocumentsRequest, read_time, mask, &google_protobuf_Timestamp_fields),
+    PB_FIELD( 12, BOOL    , SINGULAR, STATIC  , OTHER, google_firestore_v1_ListDocumentsRequest, show_missing, read_time, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListDocumentsResponse_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_ListDocumentsResponse, documents, documents, &google_firestore_v1_Document_fields),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListDocumentsResponse, next_page_token, documents, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_CreateDocumentRequest_fields[6] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_CreateDocumentRequest, parent, parent, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_CreateDocumentRequest, collection_id, parent, 0),
+    PB_FIELD(  3, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_CreateDocumentRequest, document_id, collection_id, 0),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_CreateDocumentRequest, document, document_id, &google_firestore_v1_Document_fields),
+    PB_FIELD(  5, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_CreateDocumentRequest, mask, document, &google_firestore_v1_DocumentMask_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_UpdateDocumentRequest_fields[5] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_UpdateDocumentRequest, document, document, &google_firestore_v1_Document_fields),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_UpdateDocumentRequest, update_mask, document, &google_firestore_v1_DocumentMask_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_UpdateDocumentRequest, mask, update_mask, &google_firestore_v1_DocumentMask_fields),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_UpdateDocumentRequest, current_document, mask, &google_firestore_v1_Precondition_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DeleteDocumentRequest_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_DeleteDocumentRequest, name, name, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_DeleteDocumentRequest, current_document, name, &google_firestore_v1_Precondition_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_BatchGetDocumentsRequest_fields[7] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_BatchGetDocumentsRequest, database, database, 0),
+    PB_FIELD(  2, BYTES   , REPEATED, POINTER , OTHER, google_firestore_v1_BatchGetDocumentsRequest, documents, database, 0),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_BatchGetDocumentsRequest, mask, documents, &google_firestore_v1_DocumentMask_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   4, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_BatchGetDocumentsRequest, transaction, mask, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   5, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_BatchGetDocumentsRequest, new_transaction, mask, &google_firestore_v1_TransactionOptions_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(consistency_selector,   7, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_BatchGetDocumentsRequest, read_time, mask, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_BatchGetDocumentsResponse_fields[5] = {
+    PB_ANONYMOUS_ONEOF_FIELD(result,   1, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_BatchGetDocumentsResponse, found, found, &google_firestore_v1_Document_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(result,   2, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_BatchGetDocumentsResponse, missing, missing, 0),
+    PB_FIELD(  3, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_BatchGetDocumentsResponse, transaction, missing, 0),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_BatchGetDocumentsResponse, read_time, transaction, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_BeginTransactionRequest_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_BeginTransactionRequest, database, database, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_BeginTransactionRequest, options, database, &google_firestore_v1_TransactionOptions_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_BeginTransactionResponse_fields[2] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_BeginTransactionResponse, transaction, transaction, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_CommitRequest_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_CommitRequest, database, database, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_CommitRequest, writes, database, &google_firestore_v1_Write_fields),
+    PB_FIELD(  3, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_CommitRequest, transaction, writes, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_CommitResponse_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_CommitResponse, write_results, write_results, &google_firestore_v1_WriteResult_fields),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_CommitResponse, commit_time, write_results, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_RollbackRequest_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_RollbackRequest, database, database, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_RollbackRequest, transaction, database, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_RunQueryRequest_fields[6] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_RunQueryRequest, parent, parent, 0),
+    PB_ONEOF_FIELD(query_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_RunQueryRequest, structured_query, parent, &google_firestore_v1_StructuredQuery_fields),
+    PB_ONEOF_FIELD(consistency_selector,   5, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_RunQueryRequest, transaction, query_type.structured_query, 0),
+    PB_ONEOF_FIELD(consistency_selector,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_RunQueryRequest, new_transaction, query_type.structured_query, &google_firestore_v1_TransactionOptions_fields),
+    PB_ONEOF_FIELD(consistency_selector,   7, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_RunQueryRequest, read_time, query_type.structured_query, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_RunQueryResponse_fields[5] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_RunQueryResponse, document, document, &google_firestore_v1_Document_fields),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_RunQueryResponse, transaction, document, 0),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_RunQueryResponse, read_time, transaction, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_RunQueryResponse, skipped_results, read_time, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_WriteRequest_fields[6] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_WriteRequest, database, database, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_WriteRequest, stream_id, database, 0),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_WriteRequest, writes, stream_id, &google_firestore_v1_Write_fields),
+    PB_FIELD(  4, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_WriteRequest, stream_token, writes, 0),
+    PB_FIELD(  5, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_WriteRequest, labels, stream_token, &google_firestore_v1_WriteRequest_LabelsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_WriteRequest_LabelsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_WriteRequest_LabelsEntry, key, key, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_WriteRequest_LabelsEntry, value, key, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_WriteResponse_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_WriteResponse, stream_id, stream_id, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_WriteResponse, stream_token, stream_id, 0),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_WriteResponse, write_results, stream_token, &google_firestore_v1_WriteResult_fields),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_WriteResponse, commit_time, write_results, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListenRequest_fields[5] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ListenRequest, database, database, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(target_change,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_ListenRequest, add_target, database, &google_firestore_v1_Target_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(target_change,   3, INT32   , ONEOF, STATIC  , UNION, google_firestore_v1_ListenRequest, remove_target, database, 0),
+    PB_FIELD(  4, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_ListenRequest, labels, remove_target, &google_firestore_v1_ListenRequest_LabelsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListenRequest_LabelsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ListenRequest_LabelsEntry, key, key, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListenRequest_LabelsEntry, value, key, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListenResponse_fields[6] = {
+    PB_ANONYMOUS_ONEOF_FIELD(response_type,   2, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_ListenResponse, target_change, target_change, &google_firestore_v1_TargetChange_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(response_type,   3, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ListenResponse, document_change, document_change, &google_firestore_v1_DocumentChange_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(response_type,   4, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ListenResponse, document_delete, document_delete, &google_firestore_v1_DocumentDelete_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(response_type,   5, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ListenResponse, filter, filter, &google_firestore_v1_ExistenceFilter_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(response_type,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_ListenResponse, document_remove, document_remove, &google_firestore_v1_DocumentRemove_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Target_fields[7] = {
+    PB_ONEOF_FIELD(target_type,   2, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_Target, query, query, &google_firestore_v1_Target_QueryTarget_fields),
+    PB_ONEOF_FIELD(target_type,   3, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Target, documents, documents, &google_firestore_v1_Target_DocumentsTarget_fields),
+    PB_ONEOF_FIELD(resume_type,   4, BYTES   , ONEOF, POINTER , OTHER, google_firestore_v1_Target, resume_token, target_type.documents, 0),
+    PB_ONEOF_FIELD(resume_type,  11, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Target, read_time, target_type.documents, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  5, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_Target, target_id, resume_type.read_time, 0),
+    PB_FIELD(  6, BOOL    , SINGULAR, STATIC  , OTHER, google_firestore_v1_Target, once, target_id, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Target_DocumentsTarget_fields[2] = {
+    PB_FIELD(  2, BYTES   , REPEATED, POINTER , FIRST, google_firestore_v1_Target_DocumentsTarget, documents, documents, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Target_QueryTarget_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_Target_QueryTarget, parent, parent, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(query_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_Target_QueryTarget, structured_query, parent, &google_firestore_v1_StructuredQuery_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_TargetChange_fields[6] = {
+    PB_FIELD(  1, UENUM   , SINGULAR, STATIC  , FIRST, google_firestore_v1_TargetChange, target_change_type, target_change_type, 0),
+    PB_FIELD(  2, INT32   , REPEATED, POINTER , OTHER, google_firestore_v1_TargetChange, target_ids, target_change_type, 0),
+    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_TargetChange, cause, target_ids, &google_rpc_Status_fields),
+    PB_FIELD(  4, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_TargetChange, resume_token, cause, 0),
+    PB_FIELD(  6, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_TargetChange, read_time, resume_token, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListCollectionIdsRequest_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_ListCollectionIdsRequest, parent, parent, 0),
+    PB_FIELD(  2, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_ListCollectionIdsRequest, page_size, parent, 0),
+    PB_FIELD(  3, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListCollectionIdsRequest, page_token, page_size, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ListCollectionIdsResponse_fields[3] = {
+    PB_FIELD(  1, BYTES   , REPEATED, POINTER , FIRST, google_firestore_v1_ListCollectionIdsResponse, collection_ids, collection_ids, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_firestore_v1_ListCollectionIdsResponse, next_page_token, collection_ids, 0),
+    PB_LAST_FIELD
+};
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 65536 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 65536 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 65536 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 65536 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 65536 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 65536 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 65536 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 65536 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.query) < 65536 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 65536 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 65536 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 65536 && pb_membersize(google_firestore_v1_TargetChange, cause) < 65536 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_GetDocumentRequest, read_time) < 256 && pb_membersize(google_firestore_v1_GetDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_ListDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_CreateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, document) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, update_mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, mask) < 256 && pb_membersize(google_firestore_v1_UpdateDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_DeleteDocumentRequest, current_document) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, new_transaction) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, read_time) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsRequest, mask) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, found) < 256 && pb_membersize(google_firestore_v1_BatchGetDocumentsResponse, read_time) < 256 && pb_membersize(google_firestore_v1_BeginTransactionRequest, options) < 256 && pb_membersize(google_firestore_v1_CommitResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, query_type.structured_query) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.new_transaction) < 256 && pb_membersize(google_firestore_v1_RunQueryRequest, consistency_selector.read_time) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, document) < 256 && pb_membersize(google_firestore_v1_RunQueryResponse, read_time) < 256 && pb_membersize(google_firestore_v1_WriteResponse, commit_time) < 256 && pb_membersize(google_firestore_v1_ListenRequest, add_target) < 256 && pb_membersize(google_firestore_v1_ListenResponse, target_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_change) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_delete) < 256 && pb_membersize(google_firestore_v1_ListenResponse, filter) < 256 && pb_membersize(google_firestore_v1_ListenResponse, document_remove) < 256 && pb_membersize(google_firestore_v1_Target, target_type.query) < 256 && pb_membersize(google_firestore_v1_Target, target_type.documents) < 256 && pb_membersize(google_firestore_v1_Target, resume_type.read_time) < 256 && pb_membersize(google_firestore_v1_Target_QueryTarget, structured_query) < 256 && pb_membersize(google_firestore_v1_TargetChange, cause) < 256 && pb_membersize(google_firestore_v1_TargetChange, read_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_GetDocumentRequest_google_firestore_v1_ListDocumentsRequest_google_firestore_v1_ListDocumentsResponse_google_firestore_v1_CreateDocumentRequest_google_firestore_v1_UpdateDocumentRequest_google_firestore_v1_DeleteDocumentRequest_google_firestore_v1_BatchGetDocumentsRequest_google_firestore_v1_BatchGetDocumentsResponse_google_firestore_v1_BeginTransactionRequest_google_firestore_v1_BeginTransactionResponse_google_firestore_v1_CommitRequest_google_firestore_v1_CommitResponse_google_firestore_v1_RollbackRequest_google_firestore_v1_RunQueryRequest_google_firestore_v1_RunQueryResponse_google_firestore_v1_WriteRequest_google_firestore_v1_WriteRequest_LabelsEntry_google_firestore_v1_WriteResponse_google_firestore_v1_ListenRequest_google_firestore_v1_ListenRequest_LabelsEntry_google_firestore_v1_ListenResponse_google_firestore_v1_Target_google_firestore_v1_Target_DocumentsTarget_google_firestore_v1_Target_QueryTarget_google_firestore_v1_TargetChange_google_firestore_v1_ListCollectionIdsRequest_google_firestore_v1_ListCollectionIdsResponse)
+#endif
+
+
+const char* EnumToString(
+  google_firestore_v1_TargetChange_TargetChangeType value) {
+    switch (value) {
+    case google_firestore_v1_TargetChange_TargetChangeType_NO_CHANGE:
+        return "NO_CHANGE";
+    case google_firestore_v1_TargetChange_TargetChangeType_ADD:
+        return "ADD";
+    case google_firestore_v1_TargetChange_TargetChangeType_REMOVE:
+        return "REMOVE";
+    case google_firestore_v1_TargetChange_TargetChangeType_CURRENT:
+        return "CURRENT";
+    case google_firestore_v1_TargetChange_TargetChangeType_RESET:
+        return "RESET";
+    }
+    return "<unknown enum value>";
+}
+
+std::string google_firestore_v1_GetDocumentRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "GetDocumentRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("mask ", mask, indent + 1, false);
+    switch (which_consistency_selector) {
+    case google_firestore_v1_GetDocumentRequest_transaction_tag:
+        result += PrintPrimitiveField("transaction: ",
+            transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_GetDocumentRequest_read_time_tag:
+        result += PrintMessageField("read_time ", read_time, indent + 1, true);
+        break;
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_ListDocumentsRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListDocumentsRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    result += PrintPrimitiveField("collection_id: ",
+        collection_id, indent + 1, false);
+    result += PrintPrimitiveField("page_size: ", page_size, indent + 1, false);
+    result += PrintPrimitiveField("page_token: ",
+        page_token, indent + 1, false);
+    result += PrintPrimitiveField("order_by: ", order_by, indent + 1, false);
+    result += PrintMessageField("mask ", mask, indent + 1, false);
+    switch (which_consistency_selector) {
+    case google_firestore_v1_ListDocumentsRequest_transaction_tag:
+        result += PrintPrimitiveField("transaction: ",
+            transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_ListDocumentsRequest_read_time_tag:
+        result += PrintMessageField("read_time ", read_time, indent + 1, true);
+        break;
+    }
+    result += PrintPrimitiveField("show_missing: ",
+        show_missing, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_ListDocumentsResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListDocumentsResponse", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != documents_count; ++i) {
+        result += PrintMessageField("documents ",
+            documents[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("next_page_token: ",
+        next_page_token, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_CreateDocumentRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CreateDocumentRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    result += PrintPrimitiveField("collection_id: ",
+        collection_id, indent + 1, false);
+    result += PrintPrimitiveField("document_id: ",
+        document_id, indent + 1, false);
+    result += PrintMessageField("document ", document, indent + 1, false);
+    result += PrintMessageField("mask ", mask, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_UpdateDocumentRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "UpdateDocumentRequest", this);
+    std::string result;
+
+    result += PrintMessageField("document ", document, indent + 1, false);
+    result += PrintMessageField("update_mask ",
+        update_mask, indent + 1, false);
+    result += PrintMessageField("mask ", mask, indent + 1, false);
+    result += PrintMessageField("current_document ",
+        current_document, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_DeleteDocumentRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DeleteDocumentRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("name: ", name, indent + 1, false);
+    result += PrintMessageField("current_document ",
+        current_document, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_BatchGetDocumentsRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BatchGetDocumentsRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    for (pb_size_t i = 0; i != documents_count; ++i) {
+        result += PrintPrimitiveField("documents: ",
+            documents[i], indent + 1, true);
+    }
+    result += PrintMessageField("mask ", mask, indent + 1, false);
+    switch (which_consistency_selector) {
+    case google_firestore_v1_BatchGetDocumentsRequest_transaction_tag:
+        result += PrintPrimitiveField("transaction: ",
+            transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_BatchGetDocumentsRequest_new_transaction_tag:
+        result += PrintMessageField("new_transaction ",
+            new_transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_BatchGetDocumentsRequest_read_time_tag:
+        result += PrintMessageField("read_time ", read_time, indent + 1, true);
+        break;
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_BatchGetDocumentsResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BatchGetDocumentsResponse", this);
+    std::string result;
+
+    switch (which_result) {
+    case google_firestore_v1_BatchGetDocumentsResponse_found_tag:
+        result += PrintMessageField("found ", found, indent + 1, true);
+        break;
+    case google_firestore_v1_BatchGetDocumentsResponse_missing_tag:
+        result += PrintPrimitiveField("missing: ", missing, indent + 1, true);
+        break;
+    }
+    result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_BeginTransactionRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BeginTransactionRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    result += PrintMessageField("options ", options, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_BeginTransactionResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BeginTransactionResponse", this);
+    std::string result;
+
+    result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_CommitRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CommitRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    for (pb_size_t i = 0; i != writes_count; ++i) {
+        result += PrintMessageField("writes ", writes[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_CommitResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CommitResponse", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != write_results_count; ++i) {
+        result += PrintMessageField("write_results ",
+            write_results[i], indent + 1, true);
+    }
+    result += PrintMessageField("commit_time ",
+        commit_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_RollbackRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "RollbackRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_RunQueryRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "RunQueryRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    switch (which_query_type) {
+    case google_firestore_v1_RunQueryRequest_structured_query_tag:
+        result += PrintMessageField("structured_query ",
+            query_type.structured_query, indent + 1, true);
+        break;
+    }
+    switch (which_consistency_selector) {
+    case google_firestore_v1_RunQueryRequest_transaction_tag:
+        result += PrintPrimitiveField("transaction: ",
+            consistency_selector.transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_RunQueryRequest_new_transaction_tag:
+        result += PrintMessageField("new_transaction ",
+            consistency_selector.new_transaction, indent + 1, true);
+        break;
+    case google_firestore_v1_RunQueryRequest_read_time_tag:
+        result += PrintMessageField("read_time ",
+            consistency_selector.read_time, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_RunQueryResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "RunQueryResponse", this);
+    std::string result;
+
+    result += PrintMessageField("document ", document, indent + 1, false);
+    result += PrintPrimitiveField("transaction: ",
+        transaction, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+    result += PrintPrimitiveField("skipped_results: ",
+        skipped_results, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_WriteRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "WriteRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    result += PrintPrimitiveField("stream_id: ", stream_id, indent + 1, false);
+    for (pb_size_t i = 0; i != writes_count; ++i) {
+        result += PrintMessageField("writes ", writes[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("stream_token: ",
+        stream_token, indent + 1, false);
+    for (pb_size_t i = 0; i != labels_count; ++i) {
+        result += PrintMessageField("labels ", labels[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_WriteRequest_LabelsEntry::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "LabelsEntry", this);
+    std::string result;
+
+    result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_WriteResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "WriteResponse", this);
+    std::string result;
+
+    result += PrintPrimitiveField("stream_id: ", stream_id, indent + 1, false);
+    result += PrintPrimitiveField("stream_token: ",
+        stream_token, indent + 1, false);
+    for (pb_size_t i = 0; i != write_results_count; ++i) {
+        result += PrintMessageField("write_results ",
+            write_results[i], indent + 1, true);
+    }
+    result += PrintMessageField("commit_time ",
+        commit_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_ListenRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListenRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("database: ", database, indent + 1, false);
+    switch (which_target_change) {
+    case google_firestore_v1_ListenRequest_add_target_tag:
+        result += PrintMessageField("add_target ",
+            add_target, indent + 1, true);
+        break;
+    case google_firestore_v1_ListenRequest_remove_target_tag:
+        result += PrintPrimitiveField("remove_target: ",
+            remove_target, indent + 1, true);
+        break;
+    }
+    for (pb_size_t i = 0; i != labels_count; ++i) {
+        result += PrintMessageField("labels ", labels[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_ListenRequest_LabelsEntry::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "LabelsEntry", this);
+    std::string result;
+
+    result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_ListenResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListenResponse", this);
+    std::string result;
+
+    switch (which_response_type) {
+    case google_firestore_v1_ListenResponse_target_change_tag:
+        result += PrintMessageField("target_change ",
+            target_change, indent + 1, true);
+        break;
+    case google_firestore_v1_ListenResponse_document_change_tag:
+        result += PrintMessageField("document_change ",
+            document_change, indent + 1, true);
+        break;
+    case google_firestore_v1_ListenResponse_document_delete_tag:
+        result += PrintMessageField("document_delete ",
+            document_delete, indent + 1, true);
+        break;
+    case google_firestore_v1_ListenResponse_filter_tag:
+        result += PrintMessageField("filter ", filter, indent + 1, true);
+        break;
+    case google_firestore_v1_ListenResponse_document_remove_tag:
+        result += PrintMessageField("document_remove ",
+            document_remove, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Target::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Target", this);
+    std::string result;
+
+    switch (which_target_type) {
+    case google_firestore_v1_Target_query_tag:
+        result += PrintMessageField("query ",
+            target_type.query, indent + 1, true);
+        break;
+    case google_firestore_v1_Target_documents_tag:
+        result += PrintMessageField("documents ",
+            target_type.documents, indent + 1, true);
+        break;
+    }
+    switch (which_resume_type) {
+    case google_firestore_v1_Target_resume_token_tag:
+        result += PrintPrimitiveField("resume_token: ",
+            resume_type.resume_token, indent + 1, true);
+        break;
+    case google_firestore_v1_Target_read_time_tag:
+        result += PrintMessageField("read_time ",
+            resume_type.read_time, indent + 1, true);
+        break;
+    }
+    result += PrintPrimitiveField("target_id: ", target_id, indent + 1, false);
+    result += PrintPrimitiveField("once: ", once, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Target_DocumentsTarget::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentsTarget", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != documents_count; ++i) {
+        result += PrintPrimitiveField("documents: ",
+            documents[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Target_QueryTarget::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "QueryTarget", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    switch (which_query_type) {
+    case google_firestore_v1_Target_QueryTarget_structured_query_tag:
+        result += PrintMessageField("structured_query ",
+            structured_query, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_TargetChange::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "TargetChange", this);
+    std::string result;
+
+    result += PrintEnumField("target_change_type: ",
+        target_change_type, indent + 1, false);
+    for (pb_size_t i = 0; i != target_ids_count; ++i) {
+        result += PrintPrimitiveField("target_ids: ",
+            target_ids[i], indent + 1, true);
+    }
+    if (has_cause) {
+        result += PrintMessageField("cause ", cause, indent + 1, true);
+    }
+    result += PrintPrimitiveField("resume_token: ",
+        resume_token, indent + 1, false);
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_ListCollectionIdsRequest::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListCollectionIdsRequest", this);
+    std::string result;
+
+    result += PrintPrimitiveField("parent: ", parent, indent + 1, false);
+    result += PrintPrimitiveField("page_size: ", page_size, indent + 1, false);
+    result += PrintPrimitiveField("page_token: ",
+        page_token, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_ListCollectionIdsResponse::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListCollectionIdsResponse", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != collection_ids_count; ++i) {
+        result += PrintPrimitiveField("collection_ids: ",
+            collection_ids[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("next_page_token: ",
+        next_page_token, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h
new file mode 100644
index 0000000..d80c82d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h	
@@ -0,0 +1,596 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_FIRESTORE_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_FIRESTORE_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/annotations.nanopb.h"
+
+#include "google/firestore/v1/common.nanopb.h"
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include "google/firestore/v1/query.nanopb.h"
+
+#include "google/firestore/v1/write.nanopb.h"
+
+#include "google/protobuf/empty.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include "google/rpc/status.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _google_firestore_v1_TargetChange_TargetChangeType {
+    google_firestore_v1_TargetChange_TargetChangeType_NO_CHANGE = 0,
+    google_firestore_v1_TargetChange_TargetChangeType_ADD = 1,
+    google_firestore_v1_TargetChange_TargetChangeType_REMOVE = 2,
+    google_firestore_v1_TargetChange_TargetChangeType_CURRENT = 3,
+    google_firestore_v1_TargetChange_TargetChangeType_RESET = 4
+} google_firestore_v1_TargetChange_TargetChangeType;
+#define _google_firestore_v1_TargetChange_TargetChangeType_MIN google_firestore_v1_TargetChange_TargetChangeType_NO_CHANGE
+#define _google_firestore_v1_TargetChange_TargetChangeType_MAX google_firestore_v1_TargetChange_TargetChangeType_RESET
+#define _google_firestore_v1_TargetChange_TargetChangeType_ARRAYSIZE ((google_firestore_v1_TargetChange_TargetChangeType)(google_firestore_v1_TargetChange_TargetChangeType_RESET+1))
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_BeginTransactionResponse {
+    pb_bytes_array_t *transaction;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_BeginTransactionResponse) */
+} google_firestore_v1_BeginTransactionResponse;
+
+typedef struct _google_firestore_v1_CommitRequest {
+    pb_bytes_array_t *database;
+    pb_size_t writes_count;
+    struct _google_firestore_v1_Write *writes;
+    pb_bytes_array_t *transaction;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_CommitRequest) */
+} google_firestore_v1_CommitRequest;
+
+typedef struct _google_firestore_v1_ListCollectionIdsResponse {
+    pb_size_t collection_ids_count;
+    pb_bytes_array_t **collection_ids;
+    pb_bytes_array_t *next_page_token;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListCollectionIdsResponse) */
+} google_firestore_v1_ListCollectionIdsResponse;
+
+typedef struct _google_firestore_v1_ListDocumentsResponse {
+    pb_size_t documents_count;
+    struct _google_firestore_v1_Document *documents;
+    pb_bytes_array_t *next_page_token;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListDocumentsResponse) */
+} google_firestore_v1_ListDocumentsResponse;
+
+typedef struct _google_firestore_v1_ListenRequest_LabelsEntry {
+    pb_bytes_array_t *key;
+    pb_bytes_array_t *value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListenRequest_LabelsEntry) */
+} google_firestore_v1_ListenRequest_LabelsEntry;
+
+typedef struct _google_firestore_v1_RollbackRequest {
+    pb_bytes_array_t *database;
+    pb_bytes_array_t *transaction;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_RollbackRequest) */
+} google_firestore_v1_RollbackRequest;
+
+typedef struct _google_firestore_v1_Target_DocumentsTarget {
+    pb_size_t documents_count;
+    pb_bytes_array_t **documents;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Target_DocumentsTarget) */
+} google_firestore_v1_Target_DocumentsTarget;
+
+typedef struct _google_firestore_v1_WriteRequest {
+    pb_bytes_array_t *database;
+    pb_bytes_array_t *stream_id;
+    pb_size_t writes_count;
+    struct _google_firestore_v1_Write *writes;
+    pb_bytes_array_t *stream_token;
+    pb_size_t labels_count;
+    struct _google_firestore_v1_WriteRequest_LabelsEntry *labels;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_WriteRequest) */
+} google_firestore_v1_WriteRequest;
+
+typedef struct _google_firestore_v1_WriteRequest_LabelsEntry {
+    pb_bytes_array_t *key;
+    pb_bytes_array_t *value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_WriteRequest_LabelsEntry) */
+} google_firestore_v1_WriteRequest_LabelsEntry;
+
+typedef struct _google_firestore_v1_BatchGetDocumentsRequest {
+    pb_bytes_array_t *database;
+    pb_size_t documents_count;
+    pb_bytes_array_t **documents;
+    google_firestore_v1_DocumentMask mask;
+    pb_size_t which_consistency_selector;
+    union {
+        pb_bytes_array_t *transaction;
+        google_firestore_v1_TransactionOptions new_transaction;
+        google_protobuf_Timestamp read_time;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_BatchGetDocumentsRequest) */
+} google_firestore_v1_BatchGetDocumentsRequest;
+
+typedef struct _google_firestore_v1_BatchGetDocumentsResponse {
+    pb_size_t which_result;
+    union {
+        google_firestore_v1_Document found;
+        pb_bytes_array_t *missing;
+    };
+    pb_bytes_array_t *transaction;
+    google_protobuf_Timestamp read_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_BatchGetDocumentsResponse) */
+} google_firestore_v1_BatchGetDocumentsResponse;
+
+typedef struct _google_firestore_v1_BeginTransactionRequest {
+    pb_bytes_array_t *database;
+    google_firestore_v1_TransactionOptions options;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_BeginTransactionRequest) */
+} google_firestore_v1_BeginTransactionRequest;
+
+typedef struct _google_firestore_v1_CommitResponse {
+    pb_size_t write_results_count;
+    struct _google_firestore_v1_WriteResult *write_results;
+    google_protobuf_Timestamp commit_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_CommitResponse) */
+} google_firestore_v1_CommitResponse;
+
+typedef struct _google_firestore_v1_CreateDocumentRequest {
+    pb_bytes_array_t *parent;
+    pb_bytes_array_t *collection_id;
+    pb_bytes_array_t *document_id;
+    google_firestore_v1_Document document;
+    google_firestore_v1_DocumentMask mask;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_CreateDocumentRequest) */
+} google_firestore_v1_CreateDocumentRequest;
+
+typedef struct _google_firestore_v1_DeleteDocumentRequest {
+    pb_bytes_array_t *name;
+    google_firestore_v1_Precondition current_document;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DeleteDocumentRequest) */
+} google_firestore_v1_DeleteDocumentRequest;
+
+typedef struct _google_firestore_v1_GetDocumentRequest {
+    pb_bytes_array_t *name;
+    google_firestore_v1_DocumentMask mask;
+    pb_size_t which_consistency_selector;
+    union {
+        pb_bytes_array_t *transaction;
+        google_protobuf_Timestamp read_time;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_GetDocumentRequest) */
+} google_firestore_v1_GetDocumentRequest;
+
+typedef struct _google_firestore_v1_ListCollectionIdsRequest {
+    pb_bytes_array_t *parent;
+    int32_t page_size;
+    pb_bytes_array_t *page_token;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListCollectionIdsRequest) */
+} google_firestore_v1_ListCollectionIdsRequest;
+
+typedef struct _google_firestore_v1_ListDocumentsRequest {
+    pb_bytes_array_t *parent;
+    pb_bytes_array_t *collection_id;
+    int32_t page_size;
+    pb_bytes_array_t *page_token;
+    pb_bytes_array_t *order_by;
+    google_firestore_v1_DocumentMask mask;
+    pb_size_t which_consistency_selector;
+    union {
+        pb_bytes_array_t *transaction;
+        google_protobuf_Timestamp read_time;
+    };
+    bool show_missing;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListDocumentsRequest) */
+} google_firestore_v1_ListDocumentsRequest;
+
+typedef struct _google_firestore_v1_RunQueryRequest {
+    pb_bytes_array_t *parent;
+    pb_size_t which_query_type;
+    union {
+        google_firestore_v1_StructuredQuery structured_query;
+    } query_type;
+    pb_size_t which_consistency_selector;
+    union {
+        pb_bytes_array_t *transaction;
+        google_firestore_v1_TransactionOptions new_transaction;
+        google_protobuf_Timestamp read_time;
+    } consistency_selector;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_RunQueryRequest) */
+} google_firestore_v1_RunQueryRequest;
+
+typedef struct _google_firestore_v1_RunQueryResponse {
+    google_firestore_v1_Document document;
+    pb_bytes_array_t *transaction;
+    google_protobuf_Timestamp read_time;
+    int32_t skipped_results;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_RunQueryResponse) */
+} google_firestore_v1_RunQueryResponse;
+
+typedef struct _google_firestore_v1_TargetChange {
+    google_firestore_v1_TargetChange_TargetChangeType target_change_type;
+    pb_size_t target_ids_count;
+    int32_t *target_ids;
+    bool has_cause;
+    google_rpc_Status cause;
+    pb_bytes_array_t *resume_token;
+    google_protobuf_Timestamp read_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_TargetChange) */
+} google_firestore_v1_TargetChange;
+
+typedef struct _google_firestore_v1_Target_QueryTarget {
+    pb_bytes_array_t *parent;
+    pb_size_t which_query_type;
+    union {
+        google_firestore_v1_StructuredQuery structured_query;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Target_QueryTarget) */
+} google_firestore_v1_Target_QueryTarget;
+
+typedef struct _google_firestore_v1_UpdateDocumentRequest {
+    google_firestore_v1_Document document;
+    google_firestore_v1_DocumentMask update_mask;
+    google_firestore_v1_DocumentMask mask;
+    google_firestore_v1_Precondition current_document;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_UpdateDocumentRequest) */
+} google_firestore_v1_UpdateDocumentRequest;
+
+typedef struct _google_firestore_v1_WriteResponse {
+    pb_bytes_array_t *stream_id;
+    pb_bytes_array_t *stream_token;
+    pb_size_t write_results_count;
+    struct _google_firestore_v1_WriteResult *write_results;
+    google_protobuf_Timestamp commit_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_WriteResponse) */
+} google_firestore_v1_WriteResponse;
+
+typedef struct _google_firestore_v1_ListenResponse {
+    pb_size_t which_response_type;
+    union {
+        google_firestore_v1_TargetChange target_change;
+        google_firestore_v1_DocumentChange document_change;
+        google_firestore_v1_DocumentDelete document_delete;
+        google_firestore_v1_ExistenceFilter filter;
+        google_firestore_v1_DocumentRemove document_remove;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListenResponse) */
+} google_firestore_v1_ListenResponse;
+
+typedef struct _google_firestore_v1_Target {
+    pb_size_t which_target_type;
+    union {
+        google_firestore_v1_Target_QueryTarget query;
+        google_firestore_v1_Target_DocumentsTarget documents;
+    } target_type;
+    pb_size_t which_resume_type;
+    union {
+        pb_bytes_array_t *resume_token;
+        google_protobuf_Timestamp read_time;
+    } resume_type;
+    int32_t target_id;
+    bool once;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Target) */
+} google_firestore_v1_Target;
+
+typedef struct _google_firestore_v1_ListenRequest {
+    pb_bytes_array_t *database;
+    pb_size_t which_target_change;
+    union {
+        google_firestore_v1_Target add_target;
+        int32_t remove_target;
+    };
+    pb_size_t labels_count;
+    struct _google_firestore_v1_ListenRequest_LabelsEntry *labels;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ListenRequest) */
+} google_firestore_v1_ListenRequest;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_GetDocumentRequest_init_default {NULL, google_firestore_v1_DocumentMask_init_default, 0, {NULL}}
+#define google_firestore_v1_ListDocumentsRequest_init_default {NULL, NULL, 0, NULL, NULL, google_firestore_v1_DocumentMask_init_default, 0, {NULL}, 0}
+#define google_firestore_v1_ListDocumentsResponse_init_default {0, NULL, NULL}
+#define google_firestore_v1_CreateDocumentRequest_init_default {NULL, NULL, NULL, google_firestore_v1_Document_init_default, google_firestore_v1_DocumentMask_init_default}
+#define google_firestore_v1_UpdateDocumentRequest_init_default {google_firestore_v1_Document_init_default, google_firestore_v1_DocumentMask_init_default, google_firestore_v1_DocumentMask_init_default, google_firestore_v1_Precondition_init_default}
+#define google_firestore_v1_DeleteDocumentRequest_init_default {NULL, google_firestore_v1_Precondition_init_default}
+#define google_firestore_v1_BatchGetDocumentsRequest_init_default {NULL, 0, NULL, google_firestore_v1_DocumentMask_init_default, 0, {NULL}}
+#define google_firestore_v1_BatchGetDocumentsResponse_init_default {0, {google_firestore_v1_Document_init_default}, NULL, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_BeginTransactionRequest_init_default {NULL, google_firestore_v1_TransactionOptions_init_default}
+#define google_firestore_v1_BeginTransactionResponse_init_default {NULL}
+#define google_firestore_v1_CommitRequest_init_default {NULL, 0, NULL, NULL}
+#define google_firestore_v1_CommitResponse_init_default {0, NULL, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_RollbackRequest_init_default {NULL, NULL}
+#define google_firestore_v1_RunQueryRequest_init_default {NULL, 0, {google_firestore_v1_StructuredQuery_init_default}, 0, {NULL}}
+#define google_firestore_v1_RunQueryResponse_init_default {google_firestore_v1_Document_init_default, NULL, google_protobuf_Timestamp_init_default, 0}
+#define google_firestore_v1_WriteRequest_init_default {NULL, NULL, 0, NULL, NULL, 0, NULL}
+#define google_firestore_v1_WriteRequest_LabelsEntry_init_default {NULL, NULL}
+#define google_firestore_v1_WriteResponse_init_default {NULL, NULL, 0, NULL, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_ListenRequest_init_default {NULL, 0, {google_firestore_v1_Target_init_default}, 0, NULL}
+#define google_firestore_v1_ListenRequest_LabelsEntry_init_default {NULL, NULL}
+#define google_firestore_v1_ListenResponse_init_default {0, {google_firestore_v1_TargetChange_init_default}}
+#define google_firestore_v1_Target_init_default  {0, {google_firestore_v1_Target_QueryTarget_init_default}, 0, {NULL}, 0, 0}
+#define google_firestore_v1_Target_DocumentsTarget_init_default {0, NULL}
+#define google_firestore_v1_Target_QueryTarget_init_default {NULL, 0, {google_firestore_v1_StructuredQuery_init_default}}
+#define google_firestore_v1_TargetChange_init_default {_google_firestore_v1_TargetChange_TargetChangeType_MIN, 0, NULL, false, google_rpc_Status_init_default, NULL, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_ListCollectionIdsRequest_init_default {NULL, 0, NULL}
+#define google_firestore_v1_ListCollectionIdsResponse_init_default {0, NULL, NULL}
+#define google_firestore_v1_GetDocumentRequest_init_zero {NULL, google_firestore_v1_DocumentMask_init_zero, 0, {NULL}}
+#define google_firestore_v1_ListDocumentsRequest_init_zero {NULL, NULL, 0, NULL, NULL, google_firestore_v1_DocumentMask_init_zero, 0, {NULL}, 0}
+#define google_firestore_v1_ListDocumentsResponse_init_zero {0, NULL, NULL}
+#define google_firestore_v1_CreateDocumentRequest_init_zero {NULL, NULL, NULL, google_firestore_v1_Document_init_zero, google_firestore_v1_DocumentMask_init_zero}
+#define google_firestore_v1_UpdateDocumentRequest_init_zero {google_firestore_v1_Document_init_zero, google_firestore_v1_DocumentMask_init_zero, google_firestore_v1_DocumentMask_init_zero, google_firestore_v1_Precondition_init_zero}
+#define google_firestore_v1_DeleteDocumentRequest_init_zero {NULL, google_firestore_v1_Precondition_init_zero}
+#define google_firestore_v1_BatchGetDocumentsRequest_init_zero {NULL, 0, NULL, google_firestore_v1_DocumentMask_init_zero, 0, {NULL}}
+#define google_firestore_v1_BatchGetDocumentsResponse_init_zero {0, {google_firestore_v1_Document_init_zero}, NULL, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_BeginTransactionRequest_init_zero {NULL, google_firestore_v1_TransactionOptions_init_zero}
+#define google_firestore_v1_BeginTransactionResponse_init_zero {NULL}
+#define google_firestore_v1_CommitRequest_init_zero {NULL, 0, NULL, NULL}
+#define google_firestore_v1_CommitResponse_init_zero {0, NULL, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_RollbackRequest_init_zero {NULL, NULL}
+#define google_firestore_v1_RunQueryRequest_init_zero {NULL, 0, {google_firestore_v1_StructuredQuery_init_zero}, 0, {NULL}}
+#define google_firestore_v1_RunQueryResponse_init_zero {google_firestore_v1_Document_init_zero, NULL, google_protobuf_Timestamp_init_zero, 0}
+#define google_firestore_v1_WriteRequest_init_zero {NULL, NULL, 0, NULL, NULL, 0, NULL}
+#define google_firestore_v1_WriteRequest_LabelsEntry_init_zero {NULL, NULL}
+#define google_firestore_v1_WriteResponse_init_zero {NULL, NULL, 0, NULL, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_ListenRequest_init_zero {NULL, 0, {google_firestore_v1_Target_init_zero}, 0, NULL}
+#define google_firestore_v1_ListenRequest_LabelsEntry_init_zero {NULL, NULL}
+#define google_firestore_v1_ListenResponse_init_zero {0, {google_firestore_v1_TargetChange_init_zero}}
+#define google_firestore_v1_Target_init_zero     {0, {google_firestore_v1_Target_QueryTarget_init_zero}, 0, {NULL}, 0, 0}
+#define google_firestore_v1_Target_DocumentsTarget_init_zero {0, NULL}
+#define google_firestore_v1_Target_QueryTarget_init_zero {NULL, 0, {google_firestore_v1_StructuredQuery_init_zero}}
+#define google_firestore_v1_TargetChange_init_zero {_google_firestore_v1_TargetChange_TargetChangeType_MIN, 0, NULL, false, google_rpc_Status_init_zero, NULL, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_ListCollectionIdsRequest_init_zero {NULL, 0, NULL}
+#define google_firestore_v1_ListCollectionIdsResponse_init_zero {0, NULL, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_BeginTransactionResponse_transaction_tag 1
+#define google_firestore_v1_CommitRequest_database_tag 1
+#define google_firestore_v1_CommitRequest_writes_tag 2
+#define google_firestore_v1_CommitRequest_transaction_tag 3
+#define google_firestore_v1_ListCollectionIdsResponse_collection_ids_tag 1
+#define google_firestore_v1_ListCollectionIdsResponse_next_page_token_tag 2
+#define google_firestore_v1_ListDocumentsResponse_documents_tag 1
+#define google_firestore_v1_ListDocumentsResponse_next_page_token_tag 2
+#define google_firestore_v1_ListenRequest_LabelsEntry_key_tag 1
+#define google_firestore_v1_ListenRequest_LabelsEntry_value_tag 2
+#define google_firestore_v1_RollbackRequest_database_tag 1
+#define google_firestore_v1_RollbackRequest_transaction_tag 2
+#define google_firestore_v1_Target_DocumentsTarget_documents_tag 2
+#define google_firestore_v1_WriteRequest_database_tag 1
+#define google_firestore_v1_WriteRequest_stream_id_tag 2
+#define google_firestore_v1_WriteRequest_writes_tag 3
+#define google_firestore_v1_WriteRequest_stream_token_tag 4
+#define google_firestore_v1_WriteRequest_labels_tag 5
+#define google_firestore_v1_WriteRequest_LabelsEntry_key_tag 1
+#define google_firestore_v1_WriteRequest_LabelsEntry_value_tag 2
+#define google_firestore_v1_BatchGetDocumentsRequest_transaction_tag 4
+#define google_firestore_v1_BatchGetDocumentsRequest_new_transaction_tag 5
+#define google_firestore_v1_BatchGetDocumentsRequest_read_time_tag 7
+#define google_firestore_v1_BatchGetDocumentsRequest_database_tag 1
+#define google_firestore_v1_BatchGetDocumentsRequest_documents_tag 2
+#define google_firestore_v1_BatchGetDocumentsRequest_mask_tag 3
+#define google_firestore_v1_BatchGetDocumentsResponse_found_tag 1
+#define google_firestore_v1_BatchGetDocumentsResponse_missing_tag 2
+#define google_firestore_v1_BatchGetDocumentsResponse_transaction_tag 3
+#define google_firestore_v1_BatchGetDocumentsResponse_read_time_tag 4
+#define google_firestore_v1_BeginTransactionRequest_database_tag 1
+#define google_firestore_v1_BeginTransactionRequest_options_tag 2
+#define google_firestore_v1_CommitResponse_write_results_tag 1
+#define google_firestore_v1_CommitResponse_commit_time_tag 2
+#define google_firestore_v1_CreateDocumentRequest_parent_tag 1
+#define google_firestore_v1_CreateDocumentRequest_collection_id_tag 2
+#define google_firestore_v1_CreateDocumentRequest_document_id_tag 3
+#define google_firestore_v1_CreateDocumentRequest_document_tag 4
+#define google_firestore_v1_CreateDocumentRequest_mask_tag 5
+#define google_firestore_v1_DeleteDocumentRequest_name_tag 1
+#define google_firestore_v1_DeleteDocumentRequest_current_document_tag 2
+#define google_firestore_v1_GetDocumentRequest_transaction_tag 3
+#define google_firestore_v1_GetDocumentRequest_read_time_tag 5
+#define google_firestore_v1_GetDocumentRequest_name_tag 1
+#define google_firestore_v1_GetDocumentRequest_mask_tag 2
+#define google_firestore_v1_ListCollectionIdsRequest_parent_tag 1
+#define google_firestore_v1_ListCollectionIdsRequest_page_size_tag 2
+#define google_firestore_v1_ListCollectionIdsRequest_page_token_tag 3
+#define google_firestore_v1_ListDocumentsRequest_transaction_tag 8
+#define google_firestore_v1_ListDocumentsRequest_read_time_tag 10
+#define google_firestore_v1_ListDocumentsRequest_parent_tag 1
+#define google_firestore_v1_ListDocumentsRequest_collection_id_tag 2
+#define google_firestore_v1_ListDocumentsRequest_page_size_tag 3
+#define google_firestore_v1_ListDocumentsRequest_page_token_tag 4
+#define google_firestore_v1_ListDocumentsRequest_order_by_tag 6
+#define google_firestore_v1_ListDocumentsRequest_mask_tag 7
+#define google_firestore_v1_ListDocumentsRequest_show_missing_tag 12
+#define google_firestore_v1_RunQueryRequest_structured_query_tag 2
+#define google_firestore_v1_RunQueryRequest_transaction_tag 5
+#define google_firestore_v1_RunQueryRequest_new_transaction_tag 6
+#define google_firestore_v1_RunQueryRequest_read_time_tag 7
+#define google_firestore_v1_RunQueryRequest_parent_tag 1
+#define google_firestore_v1_RunQueryResponse_transaction_tag 2
+#define google_firestore_v1_RunQueryResponse_document_tag 1
+#define google_firestore_v1_RunQueryResponse_read_time_tag 3
+#define google_firestore_v1_RunQueryResponse_skipped_results_tag 4
+#define google_firestore_v1_TargetChange_target_change_type_tag 1
+#define google_firestore_v1_TargetChange_target_ids_tag 2
+#define google_firestore_v1_TargetChange_cause_tag 3
+#define google_firestore_v1_TargetChange_resume_token_tag 4
+#define google_firestore_v1_TargetChange_read_time_tag 6
+#define google_firestore_v1_Target_QueryTarget_structured_query_tag 2
+#define google_firestore_v1_Target_QueryTarget_parent_tag 1
+#define google_firestore_v1_UpdateDocumentRequest_document_tag 1
+#define google_firestore_v1_UpdateDocumentRequest_update_mask_tag 2
+#define google_firestore_v1_UpdateDocumentRequest_mask_tag 3
+#define google_firestore_v1_UpdateDocumentRequest_current_document_tag 4
+#define google_firestore_v1_WriteResponse_stream_id_tag 1
+#define google_firestore_v1_WriteResponse_stream_token_tag 2
+#define google_firestore_v1_WriteResponse_write_results_tag 3
+#define google_firestore_v1_WriteResponse_commit_time_tag 4
+#define google_firestore_v1_ListenResponse_target_change_tag 2
+#define google_firestore_v1_ListenResponse_document_change_tag 3
+#define google_firestore_v1_ListenResponse_document_delete_tag 4
+#define google_firestore_v1_ListenResponse_filter_tag 5
+#define google_firestore_v1_ListenResponse_document_remove_tag 6
+#define google_firestore_v1_Target_query_tag     2
+#define google_firestore_v1_Target_documents_tag 3
+#define google_firestore_v1_Target_resume_token_tag 4
+#define google_firestore_v1_Target_read_time_tag 11
+#define google_firestore_v1_Target_target_id_tag 5
+#define google_firestore_v1_Target_once_tag      6
+#define google_firestore_v1_ListenRequest_add_target_tag 2
+#define google_firestore_v1_ListenRequest_remove_target_tag 3
+#define google_firestore_v1_ListenRequest_database_tag 1
+#define google_firestore_v1_ListenRequest_labels_tag 4
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_GetDocumentRequest_fields[5];
+extern const pb_field_t google_firestore_v1_ListDocumentsRequest_fields[10];
+extern const pb_field_t google_firestore_v1_ListDocumentsResponse_fields[3];
+extern const pb_field_t google_firestore_v1_CreateDocumentRequest_fields[6];
+extern const pb_field_t google_firestore_v1_UpdateDocumentRequest_fields[5];
+extern const pb_field_t google_firestore_v1_DeleteDocumentRequest_fields[3];
+extern const pb_field_t google_firestore_v1_BatchGetDocumentsRequest_fields[7];
+extern const pb_field_t google_firestore_v1_BatchGetDocumentsResponse_fields[5];
+extern const pb_field_t google_firestore_v1_BeginTransactionRequest_fields[3];
+extern const pb_field_t google_firestore_v1_BeginTransactionResponse_fields[2];
+extern const pb_field_t google_firestore_v1_CommitRequest_fields[4];
+extern const pb_field_t google_firestore_v1_CommitResponse_fields[3];
+extern const pb_field_t google_firestore_v1_RollbackRequest_fields[3];
+extern const pb_field_t google_firestore_v1_RunQueryRequest_fields[6];
+extern const pb_field_t google_firestore_v1_RunQueryResponse_fields[5];
+extern const pb_field_t google_firestore_v1_WriteRequest_fields[6];
+extern const pb_field_t google_firestore_v1_WriteRequest_LabelsEntry_fields[3];
+extern const pb_field_t google_firestore_v1_WriteResponse_fields[5];
+extern const pb_field_t google_firestore_v1_ListenRequest_fields[5];
+extern const pb_field_t google_firestore_v1_ListenRequest_LabelsEntry_fields[3];
+extern const pb_field_t google_firestore_v1_ListenResponse_fields[6];
+extern const pb_field_t google_firestore_v1_Target_fields[7];
+extern const pb_field_t google_firestore_v1_Target_DocumentsTarget_fields[2];
+extern const pb_field_t google_firestore_v1_Target_QueryTarget_fields[3];
+extern const pb_field_t google_firestore_v1_TargetChange_fields[6];
+extern const pb_field_t google_firestore_v1_ListCollectionIdsRequest_fields[4];
+extern const pb_field_t google_firestore_v1_ListCollectionIdsResponse_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_GetDocumentRequest_size depends on runtime parameters */
+/* google_firestore_v1_ListDocumentsRequest_size depends on runtime parameters */
+/* google_firestore_v1_ListDocumentsResponse_size depends on runtime parameters */
+/* google_firestore_v1_CreateDocumentRequest_size depends on runtime parameters */
+#define google_firestore_v1_UpdateDocumentRequest_size (44 + google_firestore_v1_Document_size + google_firestore_v1_DocumentMask_size + google_firestore_v1_DocumentMask_size)
+/* google_firestore_v1_DeleteDocumentRequest_size depends on runtime parameters */
+/* google_firestore_v1_BatchGetDocumentsRequest_size depends on runtime parameters */
+/* google_firestore_v1_BatchGetDocumentsResponse_size depends on runtime parameters */
+/* google_firestore_v1_BeginTransactionRequest_size depends on runtime parameters */
+/* google_firestore_v1_BeginTransactionResponse_size depends on runtime parameters */
+/* google_firestore_v1_CommitRequest_size depends on runtime parameters */
+/* google_firestore_v1_CommitResponse_size depends on runtime parameters */
+/* google_firestore_v1_RollbackRequest_size depends on runtime parameters */
+/* google_firestore_v1_RunQueryRequest_size depends on runtime parameters */
+/* google_firestore_v1_RunQueryResponse_size depends on runtime parameters */
+/* google_firestore_v1_WriteRequest_size depends on runtime parameters */
+/* google_firestore_v1_WriteRequest_LabelsEntry_size depends on runtime parameters */
+/* google_firestore_v1_WriteResponse_size depends on runtime parameters */
+/* google_firestore_v1_ListenRequest_size depends on runtime parameters */
+/* google_firestore_v1_ListenRequest_LabelsEntry_size depends on runtime parameters */
+/* google_firestore_v1_ListenResponse_size depends on runtime parameters */
+/* google_firestore_v1_Target_size depends on runtime parameters */
+/* google_firestore_v1_Target_DocumentsTarget_size depends on runtime parameters */
+/* google_firestore_v1_Target_QueryTarget_size depends on runtime parameters */
+/* google_firestore_v1_TargetChange_size depends on runtime parameters */
+/* google_firestore_v1_ListCollectionIdsRequest_size depends on runtime parameters */
+/* google_firestore_v1_ListCollectionIdsResponse_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define FIRESTORE_MESSAGES \
+
+
+#endif
+
+const char* EnumToString(
+    google_firestore_v1_TargetChange_TargetChangeType value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc
new file mode 100644
index 0000000..0e40a97
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.cc	
@@ -0,0 +1,390 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "query.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_StructuredQuery_fields[9] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredQuery, select, select, &google_firestore_v1_StructuredQuery_Projection_fields),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_StructuredQuery, from, select, &google_firestore_v1_StructuredQuery_CollectionSelector_fields),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery, where, from, &google_firestore_v1_StructuredQuery_Filter_fields),
+    PB_FIELD(  4, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_StructuredQuery, order_by, where, &google_firestore_v1_StructuredQuery_Order_fields),
+    PB_FIELD(  5, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_StructuredQuery, limit, order_by, &google_protobuf_Int32Value_fields),
+    PB_FIELD(  6, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery, offset, limit, 0),
+    PB_FIELD(  7, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery, start_at, offset, &google_firestore_v1_Cursor_fields),
+    PB_FIELD(  8, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery, end_at, start_at, &google_firestore_v1_Cursor_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_CollectionSelector_fields[3] = {
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_StructuredQuery_CollectionSelector, collection_id, collection_id, 0),
+    PB_FIELD(  3, BOOL    , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery_CollectionSelector, all_descendants, collection_id, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_Filter_fields[4] = {
+    PB_ANONYMOUS_ONEOF_FIELD(filter_type,   1, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_StructuredQuery_Filter, composite_filter, composite_filter, &google_firestore_v1_StructuredQuery_CompositeFilter_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(filter_type,   2, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_StructuredQuery_Filter, field_filter, field_filter, &google_firestore_v1_StructuredQuery_FieldFilter_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(filter_type,   3, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_StructuredQuery_Filter, unary_filter, unary_filter, &google_firestore_v1_StructuredQuery_UnaryFilter_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_CompositeFilter_fields[3] = {
+    PB_FIELD(  1, UENUM   , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredQuery_CompositeFilter, op, op, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_StructuredQuery_CompositeFilter, filters, op, &google_firestore_v1_StructuredQuery_Filter_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_FieldFilter_fields[4] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredQuery_FieldFilter, field, field, &google_firestore_v1_StructuredQuery_FieldReference_fields),
+    PB_FIELD(  2, UENUM   , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery_FieldFilter, op, field, 0),
+    PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery_FieldFilter, value, op, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_UnaryFilter_fields[3] = {
+    PB_FIELD(  1, UENUM   , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredQuery_UnaryFilter, op, op, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(operand_type,   2, MESSAGE , ONEOF, STATIC  , OTHER, google_firestore_v1_StructuredQuery_UnaryFilter, field, op, &google_firestore_v1_StructuredQuery_FieldReference_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_Order_fields[3] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_StructuredQuery_Order, field, field, &google_firestore_v1_StructuredQuery_FieldReference_fields),
+    PB_FIELD(  2, UENUM   , SINGULAR, STATIC  , OTHER, google_firestore_v1_StructuredQuery_Order, direction, field, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_FieldReference_fields[2] = {
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_StructuredQuery_FieldReference, field_path, field_path, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_StructuredQuery_Projection_fields[2] = {
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_StructuredQuery_Projection, fields, fields, &google_firestore_v1_StructuredQuery_FieldReference_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_Cursor_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_firestore_v1_Cursor, values, values, &google_firestore_v1_Value_fields),
+    PB_FIELD(  2, BOOL    , SINGULAR, STATIC  , OTHER, google_firestore_v1_Cursor, before, values, 0),
+    PB_LAST_FIELD
+};
+
+
+
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_StructuredQuery, select) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery, where) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery, start_at) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery, end_at) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery, limit) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, composite_filter) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, field_filter) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, unary_filter) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_FieldFilter, field) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_FieldFilter, value) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_UnaryFilter, field) < 65536 && pb_membersize(google_firestore_v1_StructuredQuery_Order, field) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_StructuredQuery_google_firestore_v1_StructuredQuery_CollectionSelector_google_firestore_v1_StructuredQuery_Filter_google_firestore_v1_StructuredQuery_CompositeFilter_google_firestore_v1_StructuredQuery_FieldFilter_google_firestore_v1_StructuredQuery_UnaryFilter_google_firestore_v1_StructuredQuery_Order_google_firestore_v1_StructuredQuery_FieldReference_google_firestore_v1_StructuredQuery_Projection_google_firestore_v1_Cursor)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_StructuredQuery, select) < 256 && pb_membersize(google_firestore_v1_StructuredQuery, where) < 256 && pb_membersize(google_firestore_v1_StructuredQuery, start_at) < 256 && pb_membersize(google_firestore_v1_StructuredQuery, end_at) < 256 && pb_membersize(google_firestore_v1_StructuredQuery, limit) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, composite_filter) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, field_filter) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_Filter, unary_filter) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_FieldFilter, field) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_FieldFilter, value) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_UnaryFilter, field) < 256 && pb_membersize(google_firestore_v1_StructuredQuery_Order, field) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_StructuredQuery_google_firestore_v1_StructuredQuery_CollectionSelector_google_firestore_v1_StructuredQuery_Filter_google_firestore_v1_StructuredQuery_CompositeFilter_google_firestore_v1_StructuredQuery_FieldFilter_google_firestore_v1_StructuredQuery_UnaryFilter_google_firestore_v1_StructuredQuery_Order_google_firestore_v1_StructuredQuery_FieldReference_google_firestore_v1_StructuredQuery_Projection_google_firestore_v1_Cursor)
+#endif
+
+
+const char* EnumToString(
+  google_firestore_v1_StructuredQuery_Direction value) {
+    switch (value) {
+    case google_firestore_v1_StructuredQuery_Direction_DIRECTION_UNSPECIFIED:
+        return "DIRECTION_UNSPECIFIED";
+    case google_firestore_v1_StructuredQuery_Direction_ASCENDING:
+        return "ASCENDING";
+    case google_firestore_v1_StructuredQuery_Direction_DESCENDING:
+        return "DESCENDING";
+    }
+    return "<unknown enum value>";
+}
+
+const char* EnumToString(
+  google_firestore_v1_StructuredQuery_CompositeFilter_Operator value) {
+    switch (value) {
+    case google_firestore_v1_StructuredQuery_CompositeFilter_Operator_OPERATOR_UNSPECIFIED:
+        return "OPERATOR_UNSPECIFIED";
+    case google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND:
+        return "AND";
+    }
+    return "<unknown enum value>";
+}
+
+const char* EnumToString(
+  google_firestore_v1_StructuredQuery_FieldFilter_Operator value) {
+    switch (value) {
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_OPERATOR_UNSPECIFIED:
+        return "OPERATOR_UNSPECIFIED";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN:
+        return "LESS_THAN";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN_OR_EQUAL:
+        return "LESS_THAN_OR_EQUAL";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN:
+        return "GREATER_THAN";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN_OR_EQUAL:
+        return "GREATER_THAN_OR_EQUAL";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_EQUAL:
+        return "EQUAL";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_EQUAL:
+        return "NOT_EQUAL";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS:
+        return "ARRAY_CONTAINS";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_IN:
+        return "IN";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS_ANY:
+        return "ARRAY_CONTAINS_ANY";
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN:
+        return "NOT_IN";
+    }
+    return "<unknown enum value>";
+}
+
+const char* EnumToString(
+  google_firestore_v1_StructuredQuery_UnaryFilter_Operator value) {
+    switch (value) {
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_OPERATOR_UNSPECIFIED:
+        return "OPERATOR_UNSPECIFIED";
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NAN:
+        return "IS_NAN";
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NULL:
+        return "IS_NULL";
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NAN:
+        return "IS_NOT_NAN";
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL:
+        return "IS_NOT_NULL";
+    }
+    return "<unknown enum value>";
+}
+
+std::string google_firestore_v1_StructuredQuery::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "StructuredQuery", this);
+    std::string result;
+
+    result += PrintMessageField("select ", select, indent + 1, false);
+    for (pb_size_t i = 0; i != from_count; ++i) {
+        result += PrintMessageField("from ", from[i], indent + 1, true);
+    }
+    result += PrintMessageField("where ", where, indent + 1, false);
+    for (pb_size_t i = 0; i != order_by_count; ++i) {
+        result += PrintMessageField("order_by ",
+            order_by[i], indent + 1, true);
+    }
+    if (has_limit) {
+        result += PrintMessageField("limit ", limit, indent + 1, true);
+    }
+    result += PrintPrimitiveField("offset: ", offset, indent + 1, false);
+    result += PrintMessageField("start_at ", start_at, indent + 1, false);
+    result += PrintMessageField("end_at ", end_at, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_StructuredQuery_CollectionSelector::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CollectionSelector", this);
+    std::string result;
+
+    result += PrintPrimitiveField("collection_id: ",
+        collection_id, indent + 1, false);
+    result += PrintPrimitiveField("all_descendants: ",
+        all_descendants, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_StructuredQuery_Filter::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Filter", this);
+    std::string result;
+
+    switch (which_filter_type) {
+    case google_firestore_v1_StructuredQuery_Filter_composite_filter_tag:
+        result += PrintMessageField("composite_filter ",
+            composite_filter, indent + 1, true);
+        break;
+    case google_firestore_v1_StructuredQuery_Filter_field_filter_tag:
+        result += PrintMessageField("field_filter ",
+            field_filter, indent + 1, true);
+        break;
+    case google_firestore_v1_StructuredQuery_Filter_unary_filter_tag:
+        result += PrintMessageField("unary_filter ",
+            unary_filter, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_StructuredQuery_CompositeFilter::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "CompositeFilter", this);
+    std::string result;
+
+    result += PrintEnumField("op: ", op, indent + 1, false);
+    for (pb_size_t i = 0; i != filters_count; ++i) {
+        result += PrintMessageField("filters ", filters[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_StructuredQuery_FieldFilter::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldFilter", this);
+    std::string result;
+
+    result += PrintMessageField("field ", field, indent + 1, false);
+    result += PrintEnumField("op: ", op, indent + 1, false);
+    result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_StructuredQuery_UnaryFilter::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "UnaryFilter", this);
+    std::string result;
+
+    result += PrintEnumField("op: ", op, indent + 1, false);
+    switch (which_operand_type) {
+    case google_firestore_v1_StructuredQuery_UnaryFilter_field_tag:
+        result += PrintMessageField("field ", field, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_StructuredQuery_Order::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Order", this);
+    std::string result;
+
+    result += PrintMessageField("field ", field, indent + 1, false);
+    result += PrintEnumField("direction: ", direction, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_StructuredQuery_FieldReference::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldReference", this);
+    std::string result;
+
+    result += PrintPrimitiveField("field_path: ",
+        field_path, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_StructuredQuery_Projection::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Projection", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != fields_count; ++i) {
+        result += PrintMessageField("fields ", fields[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_Cursor::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Cursor", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != values_count; ++i) {
+        result += PrintMessageField("values ", values[i], indent + 1, true);
+    }
+    result += PrintPrimitiveField("before: ", before, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h
new file mode 100644
index 0000000..825257f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/query.nanopb.h	
@@ -0,0 +1,282 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_QUERY_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_QUERY_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/annotations.nanopb.h"
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include "google/protobuf/wrappers.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _google_firestore_v1_StructuredQuery_Direction {
+    google_firestore_v1_StructuredQuery_Direction_DIRECTION_UNSPECIFIED = 0,
+    google_firestore_v1_StructuredQuery_Direction_ASCENDING = 1,
+    google_firestore_v1_StructuredQuery_Direction_DESCENDING = 2
+} google_firestore_v1_StructuredQuery_Direction;
+#define _google_firestore_v1_StructuredQuery_Direction_MIN google_firestore_v1_StructuredQuery_Direction_DIRECTION_UNSPECIFIED
+#define _google_firestore_v1_StructuredQuery_Direction_MAX google_firestore_v1_StructuredQuery_Direction_DESCENDING
+#define _google_firestore_v1_StructuredQuery_Direction_ARRAYSIZE ((google_firestore_v1_StructuredQuery_Direction)(google_firestore_v1_StructuredQuery_Direction_DESCENDING+1))
+
+typedef enum _google_firestore_v1_StructuredQuery_CompositeFilter_Operator {
+    google_firestore_v1_StructuredQuery_CompositeFilter_Operator_OPERATOR_UNSPECIFIED = 0,
+    google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND = 1
+} google_firestore_v1_StructuredQuery_CompositeFilter_Operator;
+#define _google_firestore_v1_StructuredQuery_CompositeFilter_Operator_MIN google_firestore_v1_StructuredQuery_CompositeFilter_Operator_OPERATOR_UNSPECIFIED
+#define _google_firestore_v1_StructuredQuery_CompositeFilter_Operator_MAX google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND
+#define _google_firestore_v1_StructuredQuery_CompositeFilter_Operator_ARRAYSIZE ((google_firestore_v1_StructuredQuery_CompositeFilter_Operator)(google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND+1))
+
+typedef enum _google_firestore_v1_StructuredQuery_FieldFilter_Operator {
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_OPERATOR_UNSPECIFIED = 0,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN = 1,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN_OR_EQUAL = 2,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN = 3,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN_OR_EQUAL = 4,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_EQUAL = 5,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_EQUAL = 6,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS = 7,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_IN = 8,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS_ANY = 9,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN = 10
+} google_firestore_v1_StructuredQuery_FieldFilter_Operator;
+#define _google_firestore_v1_StructuredQuery_FieldFilter_Operator_MIN google_firestore_v1_StructuredQuery_FieldFilter_Operator_OPERATOR_UNSPECIFIED
+#define _google_firestore_v1_StructuredQuery_FieldFilter_Operator_MAX google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN
+#define _google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAYSIZE ((google_firestore_v1_StructuredQuery_FieldFilter_Operator)(google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN+1))
+
+typedef enum _google_firestore_v1_StructuredQuery_UnaryFilter_Operator {
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator_OPERATOR_UNSPECIFIED = 0,
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NAN = 2,
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NULL = 3,
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NAN = 4,
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL = 5
+} google_firestore_v1_StructuredQuery_UnaryFilter_Operator;
+#define _google_firestore_v1_StructuredQuery_UnaryFilter_Operator_MIN google_firestore_v1_StructuredQuery_UnaryFilter_Operator_OPERATOR_UNSPECIFIED
+#define _google_firestore_v1_StructuredQuery_UnaryFilter_Operator_MAX google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL
+#define _google_firestore_v1_StructuredQuery_UnaryFilter_Operator_ARRAYSIZE ((google_firestore_v1_StructuredQuery_UnaryFilter_Operator)(google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL+1))
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_StructuredQuery_FieldReference {
+    pb_bytes_array_t *field_path;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_FieldReference) */
+} google_firestore_v1_StructuredQuery_FieldReference;
+
+typedef struct _google_firestore_v1_StructuredQuery_Projection {
+    pb_size_t fields_count;
+    struct _google_firestore_v1_StructuredQuery_FieldReference *fields;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_Projection) */
+} google_firestore_v1_StructuredQuery_Projection;
+
+typedef struct _google_firestore_v1_Cursor {
+    pb_size_t values_count;
+    struct _google_firestore_v1_Value *values;
+    bool before;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Cursor) */
+} google_firestore_v1_Cursor;
+
+typedef struct _google_firestore_v1_StructuredQuery_CollectionSelector {
+    pb_bytes_array_t *collection_id;
+    bool all_descendants;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_CollectionSelector) */
+} google_firestore_v1_StructuredQuery_CollectionSelector;
+
+typedef struct _google_firestore_v1_StructuredQuery_CompositeFilter {
+    google_firestore_v1_StructuredQuery_CompositeFilter_Operator op;
+    pb_size_t filters_count;
+    struct _google_firestore_v1_StructuredQuery_Filter *filters;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_CompositeFilter) */
+} google_firestore_v1_StructuredQuery_CompositeFilter;
+
+typedef struct _google_firestore_v1_StructuredQuery_FieldFilter {
+    google_firestore_v1_StructuredQuery_FieldReference field;
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator op;
+    google_firestore_v1_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_FieldFilter) */
+} google_firestore_v1_StructuredQuery_FieldFilter;
+
+typedef struct _google_firestore_v1_StructuredQuery_Order {
+    google_firestore_v1_StructuredQuery_FieldReference field;
+    google_firestore_v1_StructuredQuery_Direction direction;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_Order) */
+} google_firestore_v1_StructuredQuery_Order;
+
+typedef struct _google_firestore_v1_StructuredQuery_UnaryFilter {
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator op;
+    pb_size_t which_operand_type;
+    union {
+        google_firestore_v1_StructuredQuery_FieldReference field;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_UnaryFilter) */
+} google_firestore_v1_StructuredQuery_UnaryFilter;
+
+typedef struct _google_firestore_v1_StructuredQuery_Filter {
+    pb_size_t which_filter_type;
+    union {
+        google_firestore_v1_StructuredQuery_CompositeFilter composite_filter;
+        google_firestore_v1_StructuredQuery_FieldFilter field_filter;
+        google_firestore_v1_StructuredQuery_UnaryFilter unary_filter;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery_Filter) */
+} google_firestore_v1_StructuredQuery_Filter;
+
+typedef struct _google_firestore_v1_StructuredQuery {
+    google_firestore_v1_StructuredQuery_Projection select;
+    pb_size_t from_count;
+    struct _google_firestore_v1_StructuredQuery_CollectionSelector *from;
+    google_firestore_v1_StructuredQuery_Filter where;
+    pb_size_t order_by_count;
+    struct _google_firestore_v1_StructuredQuery_Order *order_by;
+    bool has_limit;
+    google_protobuf_Int32Value limit;
+    int32_t offset;
+    google_firestore_v1_Cursor start_at;
+    google_firestore_v1_Cursor end_at;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_StructuredQuery) */
+} google_firestore_v1_StructuredQuery;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_StructuredQuery_init_default {google_firestore_v1_StructuredQuery_Projection_init_default, 0, NULL, google_firestore_v1_StructuredQuery_Filter_init_default, 0, NULL, false, google_protobuf_Int32Value_init_default, 0, google_firestore_v1_Cursor_init_default, google_firestore_v1_Cursor_init_default}
+#define google_firestore_v1_StructuredQuery_CollectionSelector_init_default {NULL, 0}
+#define google_firestore_v1_StructuredQuery_Filter_init_default {0, {google_firestore_v1_StructuredQuery_CompositeFilter_init_default}}
+#define google_firestore_v1_StructuredQuery_CompositeFilter_init_default {_google_firestore_v1_StructuredQuery_CompositeFilter_Operator_MIN, 0, NULL}
+#define google_firestore_v1_StructuredQuery_FieldFilter_init_default {google_firestore_v1_StructuredQuery_FieldReference_init_default, _google_firestore_v1_StructuredQuery_FieldFilter_Operator_MIN, google_firestore_v1_Value_init_default}
+#define google_firestore_v1_StructuredQuery_UnaryFilter_init_default {_google_firestore_v1_StructuredQuery_UnaryFilter_Operator_MIN, 0, {google_firestore_v1_StructuredQuery_FieldReference_init_default}}
+#define google_firestore_v1_StructuredQuery_Order_init_default {google_firestore_v1_StructuredQuery_FieldReference_init_default, _google_firestore_v1_StructuredQuery_Direction_MIN}
+#define google_firestore_v1_StructuredQuery_FieldReference_init_default {NULL}
+#define google_firestore_v1_StructuredQuery_Projection_init_default {0, NULL}
+#define google_firestore_v1_Cursor_init_default  {0, NULL, 0}
+#define google_firestore_v1_StructuredQuery_init_zero {google_firestore_v1_StructuredQuery_Projection_init_zero, 0, NULL, google_firestore_v1_StructuredQuery_Filter_init_zero, 0, NULL, false, google_protobuf_Int32Value_init_zero, 0, google_firestore_v1_Cursor_init_zero, google_firestore_v1_Cursor_init_zero}
+#define google_firestore_v1_StructuredQuery_CollectionSelector_init_zero {NULL, 0}
+#define google_firestore_v1_StructuredQuery_Filter_init_zero {0, {google_firestore_v1_StructuredQuery_CompositeFilter_init_zero}}
+#define google_firestore_v1_StructuredQuery_CompositeFilter_init_zero {_google_firestore_v1_StructuredQuery_CompositeFilter_Operator_MIN, 0, NULL}
+#define google_firestore_v1_StructuredQuery_FieldFilter_init_zero {google_firestore_v1_StructuredQuery_FieldReference_init_zero, _google_firestore_v1_StructuredQuery_FieldFilter_Operator_MIN, google_firestore_v1_Value_init_zero}
+#define google_firestore_v1_StructuredQuery_UnaryFilter_init_zero {_google_firestore_v1_StructuredQuery_UnaryFilter_Operator_MIN, 0, {google_firestore_v1_StructuredQuery_FieldReference_init_zero}}
+#define google_firestore_v1_StructuredQuery_Order_init_zero {google_firestore_v1_StructuredQuery_FieldReference_init_zero, _google_firestore_v1_StructuredQuery_Direction_MIN}
+#define google_firestore_v1_StructuredQuery_FieldReference_init_zero {NULL}
+#define google_firestore_v1_StructuredQuery_Projection_init_zero {0, NULL}
+#define google_firestore_v1_Cursor_init_zero     {0, NULL, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_StructuredQuery_FieldReference_field_path_tag 2
+#define google_firestore_v1_StructuredQuery_Projection_fields_tag 2
+#define google_firestore_v1_Cursor_values_tag    1
+#define google_firestore_v1_Cursor_before_tag    2
+#define google_firestore_v1_StructuredQuery_CollectionSelector_collection_id_tag 2
+#define google_firestore_v1_StructuredQuery_CollectionSelector_all_descendants_tag 3
+#define google_firestore_v1_StructuredQuery_CompositeFilter_op_tag 1
+#define google_firestore_v1_StructuredQuery_CompositeFilter_filters_tag 2
+#define google_firestore_v1_StructuredQuery_FieldFilter_field_tag 1
+#define google_firestore_v1_StructuredQuery_FieldFilter_op_tag 2
+#define google_firestore_v1_StructuredQuery_FieldFilter_value_tag 3
+#define google_firestore_v1_StructuredQuery_Order_field_tag 1
+#define google_firestore_v1_StructuredQuery_Order_direction_tag 2
+#define google_firestore_v1_StructuredQuery_UnaryFilter_field_tag 2
+#define google_firestore_v1_StructuredQuery_UnaryFilter_op_tag 1
+#define google_firestore_v1_StructuredQuery_Filter_composite_filter_tag 1
+#define google_firestore_v1_StructuredQuery_Filter_field_filter_tag 2
+#define google_firestore_v1_StructuredQuery_Filter_unary_filter_tag 3
+#define google_firestore_v1_StructuredQuery_select_tag 1
+#define google_firestore_v1_StructuredQuery_from_tag 2
+#define google_firestore_v1_StructuredQuery_where_tag 3
+#define google_firestore_v1_StructuredQuery_order_by_tag 4
+#define google_firestore_v1_StructuredQuery_start_at_tag 7
+#define google_firestore_v1_StructuredQuery_end_at_tag 8
+#define google_firestore_v1_StructuredQuery_offset_tag 6
+#define google_firestore_v1_StructuredQuery_limit_tag 5
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_StructuredQuery_fields[9];
+extern const pb_field_t google_firestore_v1_StructuredQuery_CollectionSelector_fields[3];
+extern const pb_field_t google_firestore_v1_StructuredQuery_Filter_fields[4];
+extern const pb_field_t google_firestore_v1_StructuredQuery_CompositeFilter_fields[3];
+extern const pb_field_t google_firestore_v1_StructuredQuery_FieldFilter_fields[4];
+extern const pb_field_t google_firestore_v1_StructuredQuery_UnaryFilter_fields[3];
+extern const pb_field_t google_firestore_v1_StructuredQuery_Order_fields[3];
+extern const pb_field_t google_firestore_v1_StructuredQuery_FieldReference_fields[2];
+extern const pb_field_t google_firestore_v1_StructuredQuery_Projection_fields[2];
+extern const pb_field_t google_firestore_v1_Cursor_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_StructuredQuery_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_CollectionSelector_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_Filter_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_CompositeFilter_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_FieldFilter_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_UnaryFilter_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_Order_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_FieldReference_size depends on runtime parameters */
+/* google_firestore_v1_StructuredQuery_Projection_size depends on runtime parameters */
+/* google_firestore_v1_Cursor_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define QUERY_MESSAGES \
+
+
+#endif
+
+const char* EnumToString(google_firestore_v1_StructuredQuery_Direction value);
+const char* EnumToString(
+    google_firestore_v1_StructuredQuery_CompositeFilter_Operator value);
+const char* EnumToString(
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator value);
+const char* EnumToString(
+    google_firestore_v1_StructuredQuery_UnaryFilter_Operator value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc
new file mode 100644
index 0000000..a1a628a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.cc	
@@ -0,0 +1,317 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "write.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_firestore_v1_Write_fields[8] = {
+    PB_ANONYMOUS_ONEOF_FIELD(operation,   1, MESSAGE , ONEOF, STATIC  , FIRST, google_firestore_v1_Write, update, update, &google_firestore_v1_Document_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(operation,   2, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Write, delete_, delete_, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(operation,   5, BYTES   , ONEOF, POINTER , UNION, google_firestore_v1_Write, verify, verify, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(operation,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_Write, transform, transform, &google_firestore_v1_DocumentTransform_fields),
+    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_Write, update_mask, transform, &google_firestore_v1_DocumentMask_fields),
+    PB_FIELD(  4, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_Write, current_document, update_mask, &google_firestore_v1_Precondition_fields),
+    PB_FIELD(  7, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_Write, update_transforms, current_document, &google_firestore_v1_DocumentTransform_FieldTransform_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DocumentTransform_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_DocumentTransform, document, document, 0),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_DocumentTransform, field_transforms, document, &google_firestore_v1_DocumentTransform_FieldTransform_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DocumentTransform_FieldTransform_fields[8] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_DocumentTransform_FieldTransform, field_path, field_path, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   2, UENUM   , ONEOF, STATIC  , OTHER, google_firestore_v1_DocumentTransform_FieldTransform, set_to_server_value, field_path, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   3, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_DocumentTransform_FieldTransform, increment, field_path, &google_firestore_v1_Value_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   4, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_DocumentTransform_FieldTransform, maximum, field_path, &google_firestore_v1_Value_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   5, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_DocumentTransform_FieldTransform, minimum, field_path, &google_firestore_v1_Value_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   6, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_DocumentTransform_FieldTransform, append_missing_elements, field_path, &google_firestore_v1_ArrayValue_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(transform_type,   7, MESSAGE , ONEOF, STATIC  , UNION, google_firestore_v1_DocumentTransform_FieldTransform, remove_all_from_array, field_path, &google_firestore_v1_ArrayValue_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_WriteResult_fields[3] = {
+    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, google_firestore_v1_WriteResult, update_time, update_time, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, google_firestore_v1_WriteResult, transform_results, update_time, &google_firestore_v1_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DocumentChange_fields[4] = {
+    PB_FIELD(  1, MESSAGE , SINGULAR, STATIC  , FIRST, google_firestore_v1_DocumentChange, document, document, &google_firestore_v1_Document_fields),
+    PB_FIELD(  5, INT32   , REPEATED, POINTER , OTHER, google_firestore_v1_DocumentChange, target_ids, document, 0),
+    PB_FIELD(  6, INT32   , REPEATED, POINTER , OTHER, google_firestore_v1_DocumentChange, removed_target_ids, target_ids, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DocumentDelete_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_DocumentDelete, document, document, 0),
+    PB_FIELD(  4, MESSAGE , OPTIONAL, STATIC  , OTHER, google_firestore_v1_DocumentDelete, read_time, document, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  6, INT32   , REPEATED, POINTER , OTHER, google_firestore_v1_DocumentDelete, removed_target_ids, read_time, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_DocumentRemove_fields[4] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_firestore_v1_DocumentRemove, document, document, 0),
+    PB_FIELD(  2, INT32   , REPEATED, POINTER , OTHER, google_firestore_v1_DocumentRemove, removed_target_ids, document, 0),
+    PB_FIELD(  4, MESSAGE , SINGULAR, STATIC  , OTHER, google_firestore_v1_DocumentRemove, read_time, removed_target_ids, &google_protobuf_Timestamp_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_firestore_v1_ExistenceFilter_fields[3] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, google_firestore_v1_ExistenceFilter, target_id, target_id, 0),
+    PB_FIELD(  2, INT32   , SINGULAR, STATIC  , OTHER, google_firestore_v1_ExistenceFilter, count, target_id, 0),
+    PB_LAST_FIELD
+};
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Write, update) < 65536 && pb_membersize(google_firestore_v1_Write, transform) < 65536 && pb_membersize(google_firestore_v1_Write, update_mask) < 65536 && pb_membersize(google_firestore_v1_Write, current_document) < 65536 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, increment) < 65536 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, maximum) < 65536 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, minimum) < 65536 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, append_missing_elements) < 65536 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, remove_all_from_array) < 65536 && pb_membersize(google_firestore_v1_WriteResult, update_time) < 65536 && pb_membersize(google_firestore_v1_DocumentChange, document) < 65536 && pb_membersize(google_firestore_v1_DocumentDelete, read_time) < 65536 && pb_membersize(google_firestore_v1_DocumentRemove, read_time) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_firestore_v1_Write_google_firestore_v1_DocumentTransform_google_firestore_v1_DocumentTransform_FieldTransform_google_firestore_v1_WriteResult_google_firestore_v1_DocumentChange_google_firestore_v1_DocumentDelete_google_firestore_v1_DocumentRemove_google_firestore_v1_ExistenceFilter)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_firestore_v1_Write, update) < 256 && pb_membersize(google_firestore_v1_Write, transform) < 256 && pb_membersize(google_firestore_v1_Write, update_mask) < 256 && pb_membersize(google_firestore_v1_Write, current_document) < 256 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, increment) < 256 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, maximum) < 256 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, minimum) < 256 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, append_missing_elements) < 256 && pb_membersize(google_firestore_v1_DocumentTransform_FieldTransform, remove_all_from_array) < 256 && pb_membersize(google_firestore_v1_WriteResult, update_time) < 256 && pb_membersize(google_firestore_v1_DocumentChange, document) < 256 && pb_membersize(google_firestore_v1_DocumentDelete, read_time) < 256 && pb_membersize(google_firestore_v1_DocumentRemove, read_time) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_firestore_v1_Write_google_firestore_v1_DocumentTransform_google_firestore_v1_DocumentTransform_FieldTransform_google_firestore_v1_WriteResult_google_firestore_v1_DocumentChange_google_firestore_v1_DocumentDelete_google_firestore_v1_DocumentRemove_google_firestore_v1_ExistenceFilter)
+#endif
+
+
+const char* EnumToString(
+  google_firestore_v1_DocumentTransform_FieldTransform_ServerValue value) {
+    switch (value) {
+    case google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_SERVER_VALUE_UNSPECIFIED:
+        return "SERVER_VALUE_UNSPECIFIED";
+    case google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME:
+        return "REQUEST_TIME";
+    }
+    return "<unknown enum value>";
+}
+
+std::string google_firestore_v1_Write::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Write", this);
+    std::string result;
+
+    switch (which_operation) {
+    case google_firestore_v1_Write_update_tag:
+        result += PrintMessageField("update ", update, indent + 1, true);
+        break;
+    case google_firestore_v1_Write_delete_tag:
+        result += PrintPrimitiveField("delete: ", delete_, indent + 1, true);
+        break;
+    case google_firestore_v1_Write_verify_tag:
+        result += PrintPrimitiveField("verify: ", verify, indent + 1, true);
+        break;
+    case google_firestore_v1_Write_transform_tag:
+        result += PrintMessageField("transform ", transform, indent + 1, true);
+        break;
+    }
+    if (has_update_mask) {
+        result += PrintMessageField("update_mask ",
+            update_mask, indent + 1, true);
+    }
+    if (has_current_document) {
+        result += PrintMessageField("current_document ",
+            current_document, indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != update_transforms_count; ++i) {
+        result += PrintMessageField("update_transforms ",
+            update_transforms[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_DocumentTransform::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentTransform", this);
+    std::string result;
+
+    result += PrintPrimitiveField("document: ", document, indent + 1, false);
+    for (pb_size_t i = 0; i != field_transforms_count; ++i) {
+        result += PrintMessageField("field_transforms ",
+            field_transforms[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_DocumentTransform_FieldTransform::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldTransform", this);
+    std::string result;
+
+    result += PrintPrimitiveField("field_path: ",
+        field_path, indent + 1, false);
+    switch (which_transform_type) {
+    case google_firestore_v1_DocumentTransform_FieldTransform_set_to_server_value_tag:
+        result += PrintEnumField("set_to_server_value: ",
+            set_to_server_value, indent + 1, true);
+        break;
+    case google_firestore_v1_DocumentTransform_FieldTransform_increment_tag:
+        result += PrintMessageField("increment ", increment, indent + 1, true);
+        break;
+    case google_firestore_v1_DocumentTransform_FieldTransform_maximum_tag:
+        result += PrintMessageField("maximum ", maximum, indent + 1, true);
+        break;
+    case google_firestore_v1_DocumentTransform_FieldTransform_minimum_tag:
+        result += PrintMessageField("minimum ", minimum, indent + 1, true);
+        break;
+    case google_firestore_v1_DocumentTransform_FieldTransform_append_missing_elements_tag:
+        result += PrintMessageField("append_missing_elements ",
+            append_missing_elements, indent + 1, true);
+        break;
+    case google_firestore_v1_DocumentTransform_FieldTransform_remove_all_from_array_tag:
+        result += PrintMessageField("remove_all_from_array ",
+            remove_all_from_array, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_firestore_v1_WriteResult::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "WriteResult", this);
+    std::string result;
+
+    if (has_update_time) {
+        result += PrintMessageField("update_time ",
+            update_time, indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != transform_results_count; ++i) {
+        result += PrintMessageField("transform_results ",
+            transform_results[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_DocumentChange::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentChange", this);
+    std::string result;
+
+    result += PrintMessageField("document ", document, indent + 1, false);
+    for (pb_size_t i = 0; i != target_ids_count; ++i) {
+        result += PrintPrimitiveField("target_ids: ",
+            target_ids[i], indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != removed_target_ids_count; ++i) {
+        result += PrintPrimitiveField("removed_target_ids: ",
+            removed_target_ids[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_DocumentDelete::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentDelete", this);
+    std::string result;
+
+    result += PrintPrimitiveField("document: ", document, indent + 1, false);
+    if (has_read_time) {
+        result += PrintMessageField("read_time ", read_time, indent + 1, true);
+    }
+    for (pb_size_t i = 0; i != removed_target_ids_count; ++i) {
+        result += PrintPrimitiveField("removed_target_ids: ",
+            removed_target_ids[i], indent + 1, true);
+    }
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_DocumentRemove::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DocumentRemove", this);
+    std::string result;
+
+    result += PrintPrimitiveField("document: ", document, indent + 1, false);
+    for (pb_size_t i = 0; i != removed_target_ids_count; ++i) {
+        result += PrintPrimitiveField("removed_target_ids: ",
+            removed_target_ids[i], indent + 1, true);
+    }
+    result += PrintMessageField("read_time ", read_time, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_firestore_v1_ExistenceFilter::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ExistenceFilter", this);
+    std::string result;
+
+    result += PrintPrimitiveField("target_id: ", target_id, indent + 1, false);
+    result += PrintPrimitiveField("count: ", count, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h
new file mode 100644
index 0000000..a287f51
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/firestore/v1/write.nanopb.h	
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_FIRESTORE_V1_WRITE_NANOPB_H_INCLUDED
+#define PB_GOOGLE_FIRESTORE_V1_WRITE_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/api/annotations.nanopb.h"
+
+#include "google/firestore/v1/common.nanopb.h"
+
+#include "google/firestore/v1/document.nanopb.h"
+
+#include "google/protobuf/timestamp.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _google_firestore_v1_DocumentTransform_FieldTransform_ServerValue {
+    google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_SERVER_VALUE_UNSPECIFIED = 0,
+    google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME = 1
+} google_firestore_v1_DocumentTransform_FieldTransform_ServerValue;
+#define _google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_MIN google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_SERVER_VALUE_UNSPECIFIED
+#define _google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_MAX google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME
+#define _google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_ARRAYSIZE ((google_firestore_v1_DocumentTransform_FieldTransform_ServerValue)(google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME+1))
+
+/* Struct definitions */
+typedef struct _google_firestore_v1_DocumentTransform {
+    pb_bytes_array_t *document;
+    pb_size_t field_transforms_count;
+    struct _google_firestore_v1_DocumentTransform_FieldTransform *field_transforms;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentTransform) */
+} google_firestore_v1_DocumentTransform;
+
+typedef struct _google_firestore_v1_DocumentChange {
+    google_firestore_v1_Document document;
+    pb_size_t target_ids_count;
+    int32_t *target_ids;
+    pb_size_t removed_target_ids_count;
+    int32_t *removed_target_ids;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentChange) */
+} google_firestore_v1_DocumentChange;
+
+typedef struct _google_firestore_v1_DocumentDelete {
+    pb_bytes_array_t *document;
+    bool has_read_time;
+    google_protobuf_Timestamp read_time;
+    pb_size_t removed_target_ids_count;
+    int32_t *removed_target_ids;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentDelete) */
+} google_firestore_v1_DocumentDelete;
+
+typedef struct _google_firestore_v1_DocumentRemove {
+    pb_bytes_array_t *document;
+    pb_size_t removed_target_ids_count;
+    int32_t *removed_target_ids;
+    google_protobuf_Timestamp read_time;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentRemove) */
+} google_firestore_v1_DocumentRemove;
+
+typedef struct _google_firestore_v1_DocumentTransform_FieldTransform {
+    pb_bytes_array_t *field_path;
+    pb_size_t which_transform_type;
+    union {
+        google_firestore_v1_DocumentTransform_FieldTransform_ServerValue set_to_server_value;
+        google_firestore_v1_Value increment;
+        google_firestore_v1_Value maximum;
+        google_firestore_v1_Value minimum;
+        google_firestore_v1_ArrayValue append_missing_elements;
+        google_firestore_v1_ArrayValue remove_all_from_array;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_DocumentTransform_FieldTransform) */
+} google_firestore_v1_DocumentTransform_FieldTransform;
+
+typedef struct _google_firestore_v1_ExistenceFilter {
+    int32_t target_id;
+    int32_t count;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_ExistenceFilter) */
+} google_firestore_v1_ExistenceFilter;
+
+typedef struct _google_firestore_v1_Write {
+    pb_size_t which_operation;
+    union {
+        google_firestore_v1_Document update;
+        pb_bytes_array_t *delete_;
+        pb_bytes_array_t *verify;
+        google_firestore_v1_DocumentTransform transform;
+    };
+    bool has_update_mask;
+    google_firestore_v1_DocumentMask update_mask;
+    bool has_current_document;
+    google_firestore_v1_Precondition current_document;
+    pb_size_t update_transforms_count;
+    struct _google_firestore_v1_DocumentTransform_FieldTransform *update_transforms;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_Write) */
+} google_firestore_v1_Write;
+
+typedef struct _google_firestore_v1_WriteResult {
+    bool has_update_time;
+    google_protobuf_Timestamp update_time;
+    pb_size_t transform_results_count;
+    struct _google_firestore_v1_Value *transform_results;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_firestore_v1_WriteResult) */
+} google_firestore_v1_WriteResult;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_firestore_v1_Write_init_default   {0, {google_firestore_v1_Document_init_default}, false, google_firestore_v1_DocumentMask_init_default, false, google_firestore_v1_Precondition_init_default, 0, NULL}
+#define google_firestore_v1_DocumentTransform_init_default {NULL, 0, NULL}
+#define google_firestore_v1_DocumentTransform_FieldTransform_init_default {NULL, 0, {_google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_MIN}}
+#define google_firestore_v1_WriteResult_init_default {false, google_protobuf_Timestamp_init_default, 0, NULL}
+#define google_firestore_v1_DocumentChange_init_default {google_firestore_v1_Document_init_default, 0, NULL, 0, NULL}
+#define google_firestore_v1_DocumentDelete_init_default {NULL, false, google_protobuf_Timestamp_init_default, 0, NULL}
+#define google_firestore_v1_DocumentRemove_init_default {NULL, 0, NULL, google_protobuf_Timestamp_init_default}
+#define google_firestore_v1_ExistenceFilter_init_default {0, 0}
+#define google_firestore_v1_Write_init_zero      {0, {google_firestore_v1_Document_init_zero}, false, google_firestore_v1_DocumentMask_init_zero, false, google_firestore_v1_Precondition_init_zero, 0, NULL}
+#define google_firestore_v1_DocumentTransform_init_zero {NULL, 0, NULL}
+#define google_firestore_v1_DocumentTransform_FieldTransform_init_zero {NULL, 0, {_google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_MIN}}
+#define google_firestore_v1_WriteResult_init_zero {false, google_protobuf_Timestamp_init_zero, 0, NULL}
+#define google_firestore_v1_DocumentChange_init_zero {google_firestore_v1_Document_init_zero, 0, NULL, 0, NULL}
+#define google_firestore_v1_DocumentDelete_init_zero {NULL, false, google_protobuf_Timestamp_init_zero, 0, NULL}
+#define google_firestore_v1_DocumentRemove_init_zero {NULL, 0, NULL, google_protobuf_Timestamp_init_zero}
+#define google_firestore_v1_ExistenceFilter_init_zero {0, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_firestore_v1_DocumentTransform_document_tag 1
+#define google_firestore_v1_DocumentTransform_field_transforms_tag 2
+#define google_firestore_v1_DocumentChange_document_tag 1
+#define google_firestore_v1_DocumentChange_target_ids_tag 5
+#define google_firestore_v1_DocumentChange_removed_target_ids_tag 6
+#define google_firestore_v1_DocumentDelete_document_tag 1
+#define google_firestore_v1_DocumentDelete_removed_target_ids_tag 6
+#define google_firestore_v1_DocumentDelete_read_time_tag 4
+#define google_firestore_v1_DocumentRemove_document_tag 1
+#define google_firestore_v1_DocumentRemove_removed_target_ids_tag 2
+#define google_firestore_v1_DocumentRemove_read_time_tag 4
+#define google_firestore_v1_DocumentTransform_FieldTransform_set_to_server_value_tag 2
+#define google_firestore_v1_DocumentTransform_FieldTransform_increment_tag 3
+#define google_firestore_v1_DocumentTransform_FieldTransform_maximum_tag 4
+#define google_firestore_v1_DocumentTransform_FieldTransform_minimum_tag 5
+#define google_firestore_v1_DocumentTransform_FieldTransform_append_missing_elements_tag 6
+#define google_firestore_v1_DocumentTransform_FieldTransform_remove_all_from_array_tag 7
+#define google_firestore_v1_DocumentTransform_FieldTransform_field_path_tag 1
+#define google_firestore_v1_ExistenceFilter_target_id_tag 1
+#define google_firestore_v1_ExistenceFilter_count_tag 2
+#define google_firestore_v1_Write_update_tag     1
+#define google_firestore_v1_Write_delete_tag     2
+#define google_firestore_v1_Write_verify_tag     5
+#define google_firestore_v1_Write_transform_tag  6
+#define google_firestore_v1_Write_update_mask_tag 3
+#define google_firestore_v1_Write_update_transforms_tag 7
+#define google_firestore_v1_Write_current_document_tag 4
+#define google_firestore_v1_WriteResult_update_time_tag 1
+#define google_firestore_v1_WriteResult_transform_results_tag 2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_firestore_v1_Write_fields[8];
+extern const pb_field_t google_firestore_v1_DocumentTransform_fields[3];
+extern const pb_field_t google_firestore_v1_DocumentTransform_FieldTransform_fields[8];
+extern const pb_field_t google_firestore_v1_WriteResult_fields[3];
+extern const pb_field_t google_firestore_v1_DocumentChange_fields[4];
+extern const pb_field_t google_firestore_v1_DocumentDelete_fields[4];
+extern const pb_field_t google_firestore_v1_DocumentRemove_fields[4];
+extern const pb_field_t google_firestore_v1_ExistenceFilter_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_firestore_v1_Write_size depends on runtime parameters */
+/* google_firestore_v1_DocumentTransform_size depends on runtime parameters */
+/* google_firestore_v1_DocumentTransform_FieldTransform_size depends on runtime parameters */
+/* google_firestore_v1_WriteResult_size depends on runtime parameters */
+/* google_firestore_v1_DocumentChange_size depends on runtime parameters */
+/* google_firestore_v1_DocumentDelete_size depends on runtime parameters */
+/* google_firestore_v1_DocumentRemove_size depends on runtime parameters */
+#define google_firestore_v1_ExistenceFilter_size 22
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define WRITE_MESSAGES \
+
+
+#endif
+
+const char* EnumToString(
+    google_firestore_v1_DocumentTransform_FieldTransform_ServerValue value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc
new file mode 100644
index 0000000..53d2ef3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.cc	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "any.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_protobuf_Any_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_protobuf_Any, type_url, type_url, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_protobuf_Any, value, type_url, 0),
+    PB_LAST_FIELD
+};
+
+
+std::string google_protobuf_Any::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Any", this);
+    std::string result;
+
+    result += PrintPrimitiveField("type_url: ", type_url, indent + 1, false);
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h
new file mode 100644
index 0000000..9864f12
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/any.nanopb.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_PROTOBUF_ANY_NANOPB_H_INCLUDED
+#define PB_GOOGLE_PROTOBUF_ANY_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_protobuf_Any {
+    pb_bytes_array_t *type_url;
+    pb_bytes_array_t *value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Any) */
+} google_protobuf_Any;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_protobuf_Any_init_default         {NULL, NULL}
+#define google_protobuf_Any_init_zero            {NULL, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_protobuf_Any_type_url_tag         1
+#define google_protobuf_Any_value_tag            2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_protobuf_Any_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* google_protobuf_Any_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define ANY_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc
new file mode 100644
index 0000000..4ac0085
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.cc	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "empty.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_protobuf_Empty_fields[1] = {
+    PB_LAST_FIELD
+};
+
+
+std::string google_protobuf_Empty::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Empty", this);
+    std::string result;
+
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h
new file mode 100644
index 0000000..1f39ae7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/empty.nanopb.h	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_PROTOBUF_EMPTY_NANOPB_H_INCLUDED
+#define PB_GOOGLE_PROTOBUF_EMPTY_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_protobuf_Empty {
+    char dummy_field;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Empty) */
+} google_protobuf_Empty;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_protobuf_Empty_init_default       {0}
+#define google_protobuf_Empty_init_zero          {0}
+
+/* Field tags (for use in manual encoding/decoding) */
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_protobuf_Empty_fields[1];
+
+/* Maximum encoded size of messages (where known) */
+#define google_protobuf_Empty_size               0
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define EMPTY_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc
new file mode 100644
index 0000000..f1d04ba
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.cc	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "struct.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_protobuf_Struct_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_protobuf_Struct, fields, fields, &google_protobuf_Struct_FieldsEntry_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_Struct_FieldsEntry_fields[3] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_protobuf_Struct_FieldsEntry, key, key, 0),
+    PB_FIELD(  2, MESSAGE , SINGULAR, STATIC  , OTHER, google_protobuf_Struct_FieldsEntry, value, key, &google_protobuf_Value_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_Value_fields[7] = {
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   1, UENUM   , ONEOF, STATIC  , FIRST, google_protobuf_Value, null_value, null_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   2, DOUBLE  , ONEOF, STATIC  , UNION, google_protobuf_Value, number_value, number_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   3, BYTES   , ONEOF, POINTER , UNION, google_protobuf_Value, string_value, string_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   4, BOOL    , ONEOF, STATIC  , UNION, google_protobuf_Value, bool_value, bool_value, 0),
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   5, MESSAGE , ONEOF, STATIC  , UNION, google_protobuf_Value, struct_value, struct_value, &google_protobuf_Struct_fields),
+    PB_ANONYMOUS_ONEOF_FIELD(kind,   6, MESSAGE , ONEOF, STATIC  , UNION, google_protobuf_Value, list_value, list_value, &google_protobuf_ListValue_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_ListValue_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, google_protobuf_ListValue, values, values, &google_protobuf_Value_fields),
+    PB_LAST_FIELD
+};
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_protobuf_Struct_FieldsEntry, value) < 65536 && pb_membersize(google_protobuf_Value, struct_value) < 65536 && pb_membersize(google_protobuf_Value, list_value) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_google_protobuf_Struct_google_protobuf_Struct_FieldsEntry_google_protobuf_Value_google_protobuf_ListValue)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ *
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(google_protobuf_Struct_FieldsEntry, value) < 256 && pb_membersize(google_protobuf_Value, struct_value) < 256 && pb_membersize(google_protobuf_Value, list_value) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_google_protobuf_Struct_google_protobuf_Struct_FieldsEntry_google_protobuf_Value_google_protobuf_ListValue)
+#endif
+
+
+/* On some platforms (such as AVR), double is really float.
+ * These are not directly supported by nanopb, but see example_avr_double.
+ * To get rid of this error, remove any double fields from your .proto.
+ */
+PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)
+
+const char* EnumToString(
+  google_protobuf_NullValue value) {
+    switch (value) {
+    case google_protobuf_NullValue_NULL_VALUE:
+        return "NULL_VALUE";
+    }
+    return "<unknown enum value>";
+}
+
+std::string google_protobuf_Struct::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Struct", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != fields_count; ++i) {
+        result += PrintMessageField("fields ", fields[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_Struct_FieldsEntry::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FieldsEntry", this);
+    std::string result;
+
+    result += PrintPrimitiveField("key: ", key, indent + 1, false);
+    result += PrintMessageField("value ", value, indent + 1, false);
+
+    std::string tail = PrintTail(indent);
+    return header + result + tail;
+}
+
+std::string google_protobuf_Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Value", this);
+    std::string result;
+
+    switch (which_kind) {
+    case google_protobuf_Value_null_value_tag:
+        result += PrintEnumField("null_value: ", null_value, indent + 1, true);
+        break;
+    case google_protobuf_Value_number_value_tag:
+        result += PrintPrimitiveField("number_value: ",
+            number_value, indent + 1, true);
+        break;
+    case google_protobuf_Value_string_value_tag:
+        result += PrintPrimitiveField("string_value: ",
+            string_value, indent + 1, true);
+        break;
+    case google_protobuf_Value_bool_value_tag:
+        result += PrintPrimitiveField("bool_value: ",
+            bool_value, indent + 1, true);
+        break;
+    case google_protobuf_Value_struct_value_tag:
+        result += PrintMessageField("struct_value ",
+            struct_value, indent + 1, true);
+        break;
+    case google_protobuf_Value_list_value_tag:
+        result += PrintMessageField("list_value ",
+            list_value, indent + 1, true);
+        break;
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_ListValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "ListValue", this);
+    std::string result;
+
+    for (pb_size_t i = 0; i != values_count; ++i) {
+        result += PrintMessageField("values ", values[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h
new file mode 100644
index 0000000..4874fb1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/struct.nanopb.h	
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_PROTOBUF_STRUCT_NANOPB_H_INCLUDED
+#define PB_GOOGLE_PROTOBUF_STRUCT_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _google_protobuf_NullValue {
+    google_protobuf_NullValue_NULL_VALUE = 0
+} google_protobuf_NullValue;
+#define _google_protobuf_NullValue_MIN google_protobuf_NullValue_NULL_VALUE
+#define _google_protobuf_NullValue_MAX google_protobuf_NullValue_NULL_VALUE
+#define _google_protobuf_NullValue_ARRAYSIZE ((google_protobuf_NullValue)(google_protobuf_NullValue_NULL_VALUE+1))
+
+/* Struct definitions */
+typedef struct _google_protobuf_ListValue {
+    pb_size_t values_count;
+    struct _google_protobuf_Value *values;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_ListValue) */
+} google_protobuf_ListValue;
+
+typedef struct _google_protobuf_Struct {
+    pb_size_t fields_count;
+    struct _google_protobuf_Struct_FieldsEntry *fields;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Struct) */
+} google_protobuf_Struct;
+
+typedef struct _google_protobuf_Value {
+    pb_size_t which_kind;
+    union {
+        google_protobuf_NullValue null_value;
+        double number_value;
+        pb_bytes_array_t *string_value;
+        bool bool_value;
+        google_protobuf_Struct struct_value;
+        google_protobuf_ListValue list_value;
+    };
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Value) */
+} google_protobuf_Value;
+
+typedef struct _google_protobuf_Struct_FieldsEntry {
+    pb_bytes_array_t *key;
+    google_protobuf_Value value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Struct_FieldsEntry) */
+} google_protobuf_Struct_FieldsEntry;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_protobuf_Struct_init_default      {0, NULL}
+#define google_protobuf_Struct_FieldsEntry_init_default {NULL, google_protobuf_Value_init_default}
+#define google_protobuf_Value_init_default       {0, {_google_protobuf_NullValue_MIN}}
+#define google_protobuf_ListValue_init_default   {0, NULL}
+#define google_protobuf_Struct_init_zero         {0, NULL}
+#define google_protobuf_Struct_FieldsEntry_init_zero {NULL, google_protobuf_Value_init_zero}
+#define google_protobuf_Value_init_zero          {0, {_google_protobuf_NullValue_MIN}}
+#define google_protobuf_ListValue_init_zero      {0, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_protobuf_ListValue_values_tag     1
+#define google_protobuf_Struct_fields_tag        1
+#define google_protobuf_Value_null_value_tag     1
+#define google_protobuf_Value_number_value_tag   2
+#define google_protobuf_Value_string_value_tag   3
+#define google_protobuf_Value_bool_value_tag     4
+#define google_protobuf_Value_struct_value_tag   5
+#define google_protobuf_Value_list_value_tag     6
+#define google_protobuf_Struct_FieldsEntry_key_tag 1
+#define google_protobuf_Struct_FieldsEntry_value_tag 2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_protobuf_Struct_fields[2];
+extern const pb_field_t google_protobuf_Struct_FieldsEntry_fields[3];
+extern const pb_field_t google_protobuf_Value_fields[7];
+extern const pb_field_t google_protobuf_ListValue_fields[2];
+
+/* Maximum encoded size of messages (where known) */
+/* google_protobuf_Struct_size depends on runtime parameters */
+/* google_protobuf_Struct_FieldsEntry_size depends on runtime parameters */
+/* google_protobuf_Value_size depends on runtime parameters */
+/* google_protobuf_ListValue_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define STRUCT_MESSAGES \
+
+
+#endif
+
+const char* EnumToString(google_protobuf_NullValue value);
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc
new file mode 100644
index 0000000..8479028
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.cc	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "timestamp.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_protobuf_Timestamp_fields[3] = {
+    PB_FIELD(  1, INT64   , SINGULAR, STATIC  , FIRST, google_protobuf_Timestamp, seconds, seconds, 0),
+    PB_FIELD(  2, INT32   , SINGULAR, STATIC  , OTHER, google_protobuf_Timestamp, nanos, seconds, 0),
+    PB_LAST_FIELD
+};
+
+
+std::string google_protobuf_Timestamp::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Timestamp", this);
+    std::string result;
+
+    result += PrintPrimitiveField("seconds: ", seconds, indent + 1, false);
+    result += PrintPrimitiveField("nanos: ", nanos, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h
new file mode 100644
index 0000000..d1f9b18
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/timestamp.nanopb.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_PROTOBUF_TIMESTAMP_NANOPB_H_INCLUDED
+#define PB_GOOGLE_PROTOBUF_TIMESTAMP_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_protobuf_Timestamp {
+    int64_t seconds;
+    int32_t nanos;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Timestamp) */
+} google_protobuf_Timestamp;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_protobuf_Timestamp_init_default   {0, 0}
+#define google_protobuf_Timestamp_init_zero      {0, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_protobuf_Timestamp_seconds_tag    1
+#define google_protobuf_Timestamp_nanos_tag      2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_protobuf_Timestamp_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+#define google_protobuf_Timestamp_size           22
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define TIMESTAMP_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc
new file mode 100644
index 0000000..be6db79
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.cc	
@@ -0,0 +1,230 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "wrappers.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_protobuf_DoubleValue_fields[2] = {
+    PB_FIELD(  1, DOUBLE  , SINGULAR, STATIC  , FIRST, google_protobuf_DoubleValue, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_FloatValue_fields[2] = {
+    PB_FIELD(  1, FLOAT   , SINGULAR, STATIC  , FIRST, google_protobuf_FloatValue, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_Int64Value_fields[2] = {
+    PB_FIELD(  1, INT64   , SINGULAR, STATIC  , FIRST, google_protobuf_Int64Value, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_UInt64Value_fields[2] = {
+    PB_FIELD(  1, UINT64  , SINGULAR, STATIC  , FIRST, google_protobuf_UInt64Value, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_Int32Value_fields[2] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, google_protobuf_Int32Value, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_UInt32Value_fields[2] = {
+    PB_FIELD(  1, UINT32  , SINGULAR, STATIC  , FIRST, google_protobuf_UInt32Value, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_BoolValue_fields[2] = {
+    PB_FIELD(  1, BOOL    , SINGULAR, STATIC  , FIRST, google_protobuf_BoolValue, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_StringValue_fields[2] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_protobuf_StringValue, value, value, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t google_protobuf_BytesValue_fields[2] = {
+    PB_FIELD(  1, BYTES   , SINGULAR, POINTER , FIRST, google_protobuf_BytesValue, value, value, 0),
+    PB_LAST_FIELD
+};
+
+
+/* On some platforms (such as AVR), double is really float.
+ * These are not directly supported by nanopb, but see example_avr_double.
+ * To get rid of this error, remove any double fields from your .proto.
+ */
+PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)
+
+std::string google_protobuf_DoubleValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "DoubleValue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_FloatValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "FloatValue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_Int64Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Int64Value", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_UInt64Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "UInt64Value", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_Int32Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Int32Value", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_UInt32Value::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "UInt32Value", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_BoolValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BoolValue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_StringValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "StringValue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+std::string google_protobuf_BytesValue::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "BytesValue", this);
+    std::string result;
+
+    result += PrintPrimitiveField("value: ", value, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h
new file mode 100644
index 0000000..55d2252
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/protobuf/wrappers.nanopb.h	
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_PROTOBUF_WRAPPERS_NANOPB_H_INCLUDED
+#define PB_GOOGLE_PROTOBUF_WRAPPERS_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_protobuf_BytesValue {
+    pb_bytes_array_t *value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_BytesValue) */
+} google_protobuf_BytesValue;
+
+typedef struct _google_protobuf_StringValue {
+    pb_bytes_array_t *value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_StringValue) */
+} google_protobuf_StringValue;
+
+typedef struct _google_protobuf_BoolValue {
+    bool value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_BoolValue) */
+} google_protobuf_BoolValue;
+
+typedef struct _google_protobuf_DoubleValue {
+    double value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_DoubleValue) */
+} google_protobuf_DoubleValue;
+
+typedef struct _google_protobuf_FloatValue {
+    float value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_FloatValue) */
+} google_protobuf_FloatValue;
+
+typedef struct _google_protobuf_Int32Value {
+    int32_t value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Int32Value) */
+} google_protobuf_Int32Value;
+
+typedef struct _google_protobuf_Int64Value {
+    int64_t value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_Int64Value) */
+} google_protobuf_Int64Value;
+
+typedef struct _google_protobuf_UInt32Value {
+    uint32_t value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_UInt32Value) */
+} google_protobuf_UInt32Value;
+
+typedef struct _google_protobuf_UInt64Value {
+    uint64_t value;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_protobuf_UInt64Value) */
+} google_protobuf_UInt64Value;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_protobuf_DoubleValue_init_default {0}
+#define google_protobuf_FloatValue_init_default  {0}
+#define google_protobuf_Int64Value_init_default  {0}
+#define google_protobuf_UInt64Value_init_default {0}
+#define google_protobuf_Int32Value_init_default  {0}
+#define google_protobuf_UInt32Value_init_default {0}
+#define google_protobuf_BoolValue_init_default   {0}
+#define google_protobuf_StringValue_init_default {NULL}
+#define google_protobuf_BytesValue_init_default  {NULL}
+#define google_protobuf_DoubleValue_init_zero    {0}
+#define google_protobuf_FloatValue_init_zero     {0}
+#define google_protobuf_Int64Value_init_zero     {0}
+#define google_protobuf_UInt64Value_init_zero    {0}
+#define google_protobuf_Int32Value_init_zero     {0}
+#define google_protobuf_UInt32Value_init_zero    {0}
+#define google_protobuf_BoolValue_init_zero      {0}
+#define google_protobuf_StringValue_init_zero    {NULL}
+#define google_protobuf_BytesValue_init_zero     {NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_protobuf_BytesValue_value_tag     1
+#define google_protobuf_StringValue_value_tag    1
+#define google_protobuf_BoolValue_value_tag      1
+#define google_protobuf_DoubleValue_value_tag    1
+#define google_protobuf_FloatValue_value_tag     1
+#define google_protobuf_Int32Value_value_tag     1
+#define google_protobuf_Int64Value_value_tag     1
+#define google_protobuf_UInt32Value_value_tag    1
+#define google_protobuf_UInt64Value_value_tag    1
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_protobuf_DoubleValue_fields[2];
+extern const pb_field_t google_protobuf_FloatValue_fields[2];
+extern const pb_field_t google_protobuf_Int64Value_fields[2];
+extern const pb_field_t google_protobuf_UInt64Value_fields[2];
+extern const pb_field_t google_protobuf_Int32Value_fields[2];
+extern const pb_field_t google_protobuf_UInt32Value_fields[2];
+extern const pb_field_t google_protobuf_BoolValue_fields[2];
+extern const pb_field_t google_protobuf_StringValue_fields[2];
+extern const pb_field_t google_protobuf_BytesValue_fields[2];
+
+/* Maximum encoded size of messages (where known) */
+#define google_protobuf_DoubleValue_size         9
+#define google_protobuf_FloatValue_size          5
+#define google_protobuf_Int64Value_size          11
+#define google_protobuf_UInt64Value_size         11
+#define google_protobuf_Int32Value_size          11
+#define google_protobuf_UInt32Value_size         6
+#define google_protobuf_BoolValue_size           2
+/* google_protobuf_StringValue_size depends on runtime parameters */
+/* google_protobuf_BytesValue_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define WRAPPERS_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc
new file mode 100644
index 0000000..de1bbbf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.cc	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "status.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_rpc_Status_fields[4] = {
+    PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, google_rpc_Status, code, code, 0),
+    PB_FIELD(  2, BYTES   , SINGULAR, POINTER , OTHER, google_rpc_Status, message, code, 0),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, google_rpc_Status, details, message, &google_protobuf_Any_fields),
+    PB_LAST_FIELD
+};
+
+
+std::string google_rpc_Status::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "Status", this);
+    std::string result;
+
+    result += PrintPrimitiveField("code: ", code, indent + 1, false);
+    result += PrintPrimitiveField("message: ", message, indent + 1, false);
+    for (pb_size_t i = 0; i != details_count; ++i) {
+        result += PrintMessageField("details ", details[i], indent + 1, true);
+    }
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.h
new file mode 100644
index 0000000..42237e8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/rpc/status.nanopb.h	
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_RPC_STATUS_NANOPB_H_INCLUDED
+#define PB_GOOGLE_RPC_STATUS_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include "google/protobuf/any.nanopb.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_rpc_Status {
+    int32_t code;
+    pb_bytes_array_t *message;
+    pb_size_t details_count;
+    struct _google_protobuf_Any *details;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_rpc_Status) */
+} google_rpc_Status;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_rpc_Status_init_default           {0, NULL, 0, NULL}
+#define google_rpc_Status_init_zero              {0, NULL, 0, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_rpc_Status_code_tag               1
+#define google_rpc_Status_message_tag            2
+#define google_rpc_Status_details_tag            3
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_rpc_Status_fields[4];
+
+/* Maximum encoded size of messages (where known) */
+/* google_rpc_Status_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define STATUS_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc
new file mode 100644
index 0000000..8be0f98
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.cc	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.8 */
+
+#include "latlng.nanopb.h"
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+namespace firebase {
+namespace firestore {
+
+using nanopb::PrintEnumField;
+using nanopb::PrintHeader;
+using nanopb::PrintMessageField;
+using nanopb::PrintPrimitiveField;
+using nanopb::PrintTail;
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+
+const pb_field_t google_type_LatLng_fields[3] = {
+    PB_FIELD(  1, DOUBLE  , SINGULAR, STATIC  , FIRST, google_type_LatLng, latitude, latitude, 0),
+    PB_FIELD(  2, DOUBLE  , SINGULAR, STATIC  , OTHER, google_type_LatLng, longitude, latitude, 0),
+    PB_LAST_FIELD
+};
+
+
+/* On some platforms (such as AVR), double is really float.
+ * These are not directly supported by nanopb, but see example_avr_double.
+ * To get rid of this error, remove any double fields from your .proto.
+ */
+PB_STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)
+
+std::string google_type_LatLng::ToString(int indent) const {
+    std::string header = PrintHeader(indent, "LatLng", this);
+    std::string result;
+
+    result += PrintPrimitiveField("latitude: ", latitude, indent + 1, false);
+    result += PrintPrimitiveField("longitude: ", longitude, indent + 1, false);
+
+    bool is_root = indent == 0;
+    if (!result.empty() || is_root) {
+      std::string tail = PrintTail(indent);
+      return header + result + tail;
+    } else {
+      return "";
+    }
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.h
new file mode 100644
index 0000000..52d7b13
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Protos/nanopb/google/type/latlng.nanopb.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.8 */
+
+#ifndef PB_GOOGLE_TYPE_LATLNG_NANOPB_H_INCLUDED
+#define PB_GOOGLE_TYPE_LATLNG_NANOPB_H_INCLUDED
+#include <pb.h>
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Struct definitions */
+typedef struct _google_type_LatLng {
+    double latitude;
+    double longitude;
+
+    std::string ToString(int indent = 0) const;
+/* @@protoc_insertion_point(struct:google_type_LatLng) */
+} google_type_LatLng;
+
+/* Default values for struct fields */
+
+/* Initializer values for message structs */
+#define google_type_LatLng_init_default          {0, 0}
+#define google_type_LatLng_init_zero             {0, 0}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define google_type_LatLng_latitude_tag          1
+#define google_type_LatLng_longitude_tag         2
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t google_type_LatLng_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+#define google_type_LatLng_size                  18
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define LATLNG_MESSAGES \
+
+
+#endif
+
+}  // namespace firestore
+}  // namespace firebase
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference+Internal.h
new file mode 100644
index 0000000..71ac98d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference+Internal.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRCollectionReference.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/api_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+class ResourcePath;
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+namespace api = firebase::firestore::api;
+namespace model = firebase::firestore::model;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Internal FIRCollectionReference API we don't want exposed in our public header files. */
+@interface FIRCollectionReference (/* Init */)
+
+- (instancetype)initWithReference:(api::CollectionReference &&)reference NS_DESIGNATED_INITIALIZER;
+
+// Mark the super class designated initializer unavailable.
+- (instancetype)initWithQuery:(api::Query &&)query NS_UNAVAILABLE;
+
+- (instancetype)initWithPath:(model::ResourcePath)path
+                   firestore:(std::shared_ptr<api::Firestore>)firestore;
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference.mm
new file mode 100644
index 0000000..54e3bc9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRCollectionReference.mm	
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRCollectionReference.h"
+
+#include <utility>
+
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRQuery+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/api/collection_reference.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::api::CollectionReference;
+using firebase::firestore::api::DocumentReference;
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::model::ResourcePath;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRCollectionReference
+
+- (instancetype)initWithReference:(CollectionReference &&)reference {
+  return [super initWithQuery:std::move(reference)];
+}
+
+- (instancetype)initWithPath:(ResourcePath)path
+                   firestore:(std::shared_ptr<api::Firestore>)firestore {
+  CollectionReference ref(std::move(path), std::move(firestore));
+  return [self initWithReference:std::move(ref)];
+}
+
+// Override the designated initializer from the super class.
+- (instancetype)initWithQuery:(__unused api::Query &&)query {
+  HARD_FAIL("Use FIRCollectionReference initWithPath: initializer.");
+}
+
+// NSObject Methods
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  if (![[other class] isEqual:[self class]]) return NO;
+
+  return [self isEqualToReference:other];
+}
+
+- (BOOL)isEqualToReference:(nullable FIRCollectionReference *)otherReference {
+  if (self == otherReference) return YES;
+  if (otherReference == nil) return NO;
+  return self.reference == otherReference.reference;
+}
+
+- (NSUInteger)hash {
+  return self.reference.Hash();
+}
+
+- (const CollectionReference &)reference {
+  // TODO(wilhuff): Use some alternate method for doing this.
+  //
+  // Casting from Query& to CollectionReference& when the value is actually a
+  // Query violates aliasing rules and is technically undefined behavior.
+  // Nevertheless this works on Clang so this is good enough for now.
+  return static_cast<const CollectionReference &>(self.apiQuery);
+}
+
+- (NSString *)collectionID {
+  return util::MakeNSString(self.reference.collection_id());
+}
+
+- (FIRDocumentReference *_Nullable)parent {
+  absl::optional<DocumentReference> parent = self.reference.parent();
+  if (!parent) {
+    return nil;
+  }
+  return [[FIRDocumentReference alloc] initWithReference:std::move(*parent)];
+}
+
+- (NSString *)path {
+  return util::MakeNSString(self.reference.path());
+}
+
+- (FIRDocumentReference *)documentWithPath:(NSString *)documentPath {
+  if (!documentPath) {
+    ThrowInvalidArgument("Document path cannot be nil.");
+  }
+  if (!documentPath.length) {
+    ThrowInvalidArgument("Document path cannot be empty.");
+  }
+  DocumentReference child = self.reference.Document(util::MakeString(documentPath));
+  return [[FIRDocumentReference alloc] initWithReference:std::move(child)];
+}
+
+- (FIRDocumentReference *)addDocumentWithData:(NSDictionary<NSString *, id> *)data {
+  return [self addDocumentWithData:data completion:nil];
+}
+
+- (FIRDocumentReference *)addDocumentWithData:(NSDictionary<NSString *, id> *)data
+                                   completion:
+                                       (nullable void (^)(NSError *_Nullable error))completion {
+  ParsedSetData parsed = [self.firestore.dataReader parsedSetData:data];
+  DocumentReference docRef =
+      self.reference.AddDocument(std::move(parsed), util::MakeCallback(completion));
+  return [[FIRDocumentReference alloc] initWithReference:std::move(docRef)];
+}
+
+- (FIRDocumentReference *)documentWithAutoID {
+  return [[FIRDocumentReference alloc] initWithReference:self.reference.Document()];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange+Internal.h
new file mode 100644
index 0000000..4314629
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange+Internal.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRDocumentChange.h"
+
+#import <Foundation/Foundation.h>
+
+#include "Firestore/core/src/api/document_change.h"
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRDocumentChange (/* Init */)
+
+- (instancetype)initWithDocumentChange:(api::DocumentChange &&)documentChange
+    NS_DESIGNATED_INITIALIZER;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange.mm
new file mode 100644
index 0000000..72c4289
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentChange.mm	
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRDocumentChange+Internal.h"
+
+#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+
+#include "Firestore/core/src/api/document_change.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+using firebase::firestore::api::DocumentChange;
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace {
+
+/**
+ * Converts from C++ document change indexes to Objective-C document change
+ * indexes. Objective-C's NSNotFound is signed NSIntegerMax, not unsigned -1.
+ */
+constexpr NSUInteger MakeIndex(size_t index) {
+  return index == DocumentChange::npos ? NSNotFound : index;
+}
+
+}  // namespace
+
+@implementation FIRDocumentChange {
+  DocumentChange _documentChange;
+}
+
+- (instancetype)initWithDocumentChange:(DocumentChange &&)documentChange {
+  if (self = [super init]) {
+    _documentChange = std::move(documentChange);
+  }
+  return self;
+}
+
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  if (![other isKindOfClass:[FIRDocumentChange class]]) return NO;
+
+  FIRDocumentChange *change = (FIRDocumentChange *)other;
+  return _documentChange == change->_documentChange;
+}
+
+- (NSUInteger)hash {
+  return _documentChange.Hash();
+}
+
+- (FIRDocumentChangeType)type {
+  switch (_documentChange.type()) {
+    case DocumentChange::Type::Added:
+      return FIRDocumentChangeTypeAdded;
+    case DocumentChange::Type::Modified:
+      return FIRDocumentChangeTypeModified;
+    case DocumentChange::Type::Removed:
+      return FIRDocumentChangeTypeRemoved;
+  }
+
+  HARD_FAIL("Unknown DocumentChange::Type: %s", _documentChange.type());
+}
+
+- (FIRQueryDocumentSnapshot *)document {
+  return [[FIRQueryDocumentSnapshot alloc] initWithSnapshot:_documentChange.document()];
+}
+
+- (NSUInteger)oldIndex {
+  return MakeIndex(_documentChange.old_index());
+}
+
+- (NSUInteger)newIndex {
+  return MakeIndex(_documentChange.new_index());
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference+Internal.h
new file mode 100644
index 0000000..b417a3a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference+Internal.h	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRDocumentReference.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/api_fwd.h"
+namespace firebase {
+namespace firestore {
+namespace model {
+class DocumentKey;
+class ResourcePath;
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+namespace api = firebase::firestore::api;
+namespace model = firebase::firestore::model;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRDocumentReference (/* Init */)
+
+- (instancetype)initWithReference:(api::DocumentReference &&)reference NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithPath:(model::ResourcePath)path
+                   firestore:(std::shared_ptr<api::Firestore>)firestore;
+
+- (instancetype)initWithKey:(model::DocumentKey)key
+                  firestore:(std::shared_ptr<api::Firestore>)firestore;
+
+@end
+
+/** Internal FIRDocumentReference API we don't want exposed in our public header files. */
+@interface FIRDocumentReference (Internal)
+
+- (const api::DocumentReference &)internalReference;
+- (const model::DocumentKey &)key;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference.mm
new file mode 100644
index 0000000..b9bee80
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentReference.mm	
@@ -0,0 +1,260 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRDocumentReference+Internal.h"
+
+#include <memory>
+#include <utility>
+
+#import "FIRFirestoreErrors.h"
+#import "Firestore/Source/API/FIRCollectionReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRFirestoreSource+Internal.h"
+#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/api/collection_reference.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/document_snapshot.h"
+#include "Firestore/core/src/api/source.h"
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/listen_options.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::api::CollectionReference;
+using firebase::firestore::api::DocumentReference;
+using firebase::firestore::api::DocumentSnapshot;
+using firebase::firestore::api::DocumentSnapshotListener;
+using firebase::firestore::api::Firestore;
+using firebase::firestore::api::ListenerRegistration;
+using firebase::firestore::api::Source;
+using firebase::firestore::api::MakeSource;
+using firebase::firestore::core::EventListener;
+using firebase::firestore::core::ListenOptions;
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::core::ParsedUpdateData;
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::ResourcePath;
+using firebase::firestore::util::StatusOr;
+using firebase::firestore::util::StatusOrCallback;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - FIRDocumentReference
+
+@implementation FIRDocumentReference {
+  DocumentReference _documentReference;
+}
+
+- (instancetype)initWithReference:(DocumentReference &&)reference {
+  if (self = [super init]) {
+    _documentReference = std::move(reference);
+  }
+  return self;
+}
+
+- (instancetype)initWithPath:(ResourcePath)path firestore:(std::shared_ptr<Firestore>)firestore {
+  if (path.size() % 2 != 0) {
+    ThrowInvalidArgument("Invalid document reference. Document references must have an even "
+                         "number of segments, but %s has %s",
+                         path.CanonicalString(), path.size());
+  }
+  return [self initWithKey:DocumentKey{std::move(path)} firestore:firestore];
+}
+
+- (instancetype)initWithKey:(DocumentKey)key firestore:(std::shared_ptr<Firestore>)firestore {
+  DocumentReference delegate{std::move(key), firestore};
+  return [self initWithReference:std::move(delegate)];
+}
+
+#pragma mark - NSObject Methods
+
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  if (![[other class] isEqual:[self class]]) return NO;
+
+  return _documentReference == static_cast<FIRDocumentReference *>(other)->_documentReference;
+}
+
+- (NSUInteger)hash {
+  return _documentReference.Hash();
+}
+
+#pragma mark - Public Methods
+
+@dynamic firestore;
+
+- (FIRFirestore *)firestore {
+  return [FIRFirestore recoverFromFirestore:_documentReference.firestore()];
+}
+
+- (NSString *)documentID {
+  return util::MakeNSString(_documentReference.document_id());
+}
+
+- (FIRCollectionReference *)parent {
+  return [[FIRCollectionReference alloc] initWithReference:_documentReference.Parent()];
+}
+
+- (NSString *)path {
+  return util::MakeNSString(_documentReference.Path());
+}
+
+- (FIRCollectionReference *)collectionWithPath:(NSString *)collectionPath {
+  if (!collectionPath) {
+    ThrowInvalidArgument("Collection path cannot be nil.");
+  }
+  if (!collectionPath.length) {
+    ThrowInvalidArgument("Collection path cannot be empty.");
+  }
+
+  CollectionReference child =
+      _documentReference.GetCollectionReference(util::MakeString(collectionPath));
+  return [[FIRCollectionReference alloc] initWithReference:std::move(child)];
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData {
+  [self setData:documentData merge:NO completion:nil];
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData merge:(BOOL)merge {
+  [self setData:documentData merge:merge completion:nil];
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+    mergeFields:(NSArray<id> *)mergeFields {
+  [self setData:documentData mergeFields:mergeFields completion:nil];
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+     completion:(nullable void (^)(NSError *_Nullable error))completion {
+  [self setData:documentData merge:NO completion:completion];
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+          merge:(BOOL)merge
+     completion:(nullable void (^)(NSError *_Nullable error))completion {
+  auto dataReader = self.firestore.dataReader;
+  ParsedSetData parsed = merge ? [dataReader parsedMergeData:documentData fieldMask:nil]
+                               : [dataReader parsedSetData:documentData];
+  _documentReference.SetData(std::move(parsed), util::MakeCallback(completion));
+}
+
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+    mergeFields:(NSArray<id> *)mergeFields
+     completion:(nullable void (^)(NSError *_Nullable error))completion {
+  ParsedSetData parsed = [self.firestore.dataReader parsedMergeData:documentData
+                                                          fieldMask:mergeFields];
+  _documentReference.SetData(std::move(parsed), util::MakeCallback(completion));
+}
+
+- (void)updateData:(NSDictionary<id, id> *)fields {
+  [self updateData:fields completion:nil];
+}
+
+- (void)updateData:(NSDictionary<id, id> *)fields
+        completion:(nullable void (^)(NSError *_Nullable error))completion {
+  ParsedUpdateData parsed = [self.firestore.dataReader parsedUpdateData:fields];
+  _documentReference.UpdateData(std::move(parsed), util::MakeCallback(completion));
+}
+
+- (void)deleteDocument {
+  [self deleteDocumentWithCompletion:nil];
+}
+
+- (void)deleteDocumentWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  _documentReference.DeleteDocument(util::MakeCallback(completion));
+}
+
+- (void)getDocumentWithCompletion:(FIRDocumentSnapshotBlock)completion {
+  _documentReference.GetDocument(Source::Default, [self wrapDocumentSnapshotBlock:completion]);
+}
+
+- (void)getDocumentWithSource:(FIRFirestoreSource)source
+                   completion:(FIRDocumentSnapshotBlock)completion {
+  _documentReference.GetDocument(MakeSource(source), [self wrapDocumentSnapshotBlock:completion]);
+}
+
+- (id<FIRListenerRegistration>)addSnapshotListener:(FIRDocumentSnapshotBlock)listener {
+  return [self addSnapshotListenerWithIncludeMetadataChanges:NO listener:listener];
+}
+
+- (id<FIRListenerRegistration>)
+    addSnapshotListenerWithIncludeMetadataChanges:(BOOL)includeMetadataChanges
+                                         listener:(FIRDocumentSnapshotBlock)listener {
+  ListenOptions options = ListenOptions::FromIncludeMetadataChanges(includeMetadataChanges);
+  return [self addSnapshotListenerInternalWithOptions:options listener:listener];
+}
+
+- (id<FIRListenerRegistration>)addSnapshotListenerInternalWithOptions:(ListenOptions)internalOptions
+                                                             listener:(FIRDocumentSnapshotBlock)
+                                                                          listener {
+  std::unique_ptr<ListenerRegistration> result = _documentReference.AddSnapshotListener(
+      std::move(internalOptions), [self wrapDocumentSnapshotBlock:listener]);
+  return [[FSTListenerRegistration alloc] initWithRegistration:std::move(result)];
+}
+
+- (DocumentSnapshotListener)wrapDocumentSnapshotBlock:(FIRDocumentSnapshotBlock)block {
+  class Converter : public EventListener<DocumentSnapshot> {
+   public:
+    explicit Converter(FIRDocumentSnapshotBlock block) : block_(block) {
+    }
+
+    void OnEvent(StatusOr<DocumentSnapshot> maybe_snapshot) override {
+      if (maybe_snapshot.ok()) {
+        FIRDocumentSnapshot *result =
+            [[FIRDocumentSnapshot alloc] initWithSnapshot:std::move(maybe_snapshot).ValueOrDie()];
+        block_(result, nil);
+      } else {
+        block_(nil, util::MakeNSError(maybe_snapshot.status()));
+      }
+    }
+
+   private:
+    FIRDocumentSnapshotBlock block_;
+  };
+  return absl::make_unique<Converter>(block);
+}
+
+@end
+
+#pragma mark - FIRDocumentReference (Internal)
+
+@implementation FIRDocumentReference (Internal)
+
+- (const api::DocumentReference &)internalReference {
+  return _documentReference;
+}
+
+- (const DocumentKey &)key {
+  return _documentReference.key();
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot+Internal.h
new file mode 100644
index 0000000..103f5cc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot+Internal.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRDocumentSnapshot.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/model/model_fwd.h"
+
+@class FIRFirestore;
+
+namespace api = firebase::firestore::api;
+namespace model = firebase::firestore::model;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRDocumentSnapshot (/* Init */)
+
+- (instancetype)initWithSnapshot:(api::DocumentSnapshot &&)snapshot NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithFirestore:(FIRFirestore *)firestore
+                      documentKey:(model::DocumentKey)documentKey
+                         document:(const absl::optional<model::Document> &)document
+                         metadata:(api::SnapshotMetadata)metadata;
+
+- (instancetype)initWithFirestore:(FIRFirestore *)firestore
+                      documentKey:(model::DocumentKey)documentKey
+                         document:(const absl::optional<model::Document> &)document
+                        fromCache:(bool)fromCache
+                 hasPendingWrites:(bool)hasPendingWrites;
+
+@end
+
+/** Internal FIRDocumentSnapshot API we don't want exposed in our public header files. */
+@interface FIRDocumentSnapshot (Internal)
+
+- (const absl::optional<model::Document> &)internalDocument;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot.mm
new file mode 100644
index 0000000..2615ed4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRDocumentSnapshot.mm	
@@ -0,0 +1,211 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRDocumentSnapshot+Internal.h"
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/warnings.h"
+
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRFieldPath+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRGeoPoint+Internal.h"
+#import "Firestore/Source/API/FIRSnapshotMetadata+Internal.h"
+#import "Firestore/Source/API/FIRTimestamp+Internal.h"
+#import "Firestore/Source/API/FSTUserDataWriter.h"
+#import "Firestore/Source/API/converters.h"
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/document_snapshot.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::google_firestore_v1_Value;
+using firebase::firestore::api::DocumentSnapshot;
+using firebase::firestore::api::Firestore;
+using firebase::firestore::api::MakeFIRGeoPoint;
+using firebase::firestore::api::MakeFIRTimestamp;
+using firebase::firestore::api::SnapshotMetadata;
+using firebase::firestore::model::DatabaseId;
+using firebase::firestore::model::Document;
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::FieldPath;
+using firebase::firestore::model::ObjectValue;
+using firebase::firestore::remote::Serializer;
+using firebase::firestore::nanopb::MakeNSData;
+using firebase::firestore::util::MakeString;
+using firebase::firestore::util::ThrowInvalidArgument;
+using firebase::firestore::google_firestore_v1_Value;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRDocumentSnapshot {
+  DocumentSnapshot _snapshot;
+
+  std::unique_ptr<Serializer> _serializer;
+  FIRSnapshotMetadata *_cachedMetadata;
+}
+
+- (instancetype)initWithSnapshot:(DocumentSnapshot &&)snapshot {
+  if (self = [super init]) {
+    _snapshot = std::move(snapshot);
+    _serializer.reset(new Serializer(_snapshot.firestore()->database_id()));
+  }
+  return self;
+}
+
+- (instancetype)initWithFirestore:(FIRFirestore *)firestore
+                      documentKey:(DocumentKey)documentKey
+                         document:(const absl::optional<Document> &)document
+                         metadata:(SnapshotMetadata)metadata {
+  DocumentSnapshot wrapped;
+  if (document.has_value()) {
+    wrapped =
+        DocumentSnapshot::FromDocument(firestore.wrapped, document.value(), std::move(metadata));
+  } else {
+    wrapped = DocumentSnapshot::FromNoDocument(firestore.wrapped, std::move(documentKey),
+                                               std::move(metadata));
+  }
+  _serializer.reset(new Serializer(firestore.databaseID));
+  return [self initWithSnapshot:std::move(wrapped)];
+}
+
+- (instancetype)initWithFirestore:(FIRFirestore *)firestore
+                      documentKey:(DocumentKey)documentKey
+                         document:(const absl::optional<Document> &)document
+                        fromCache:(bool)fromCache
+                 hasPendingWrites:(bool)hasPendingWrites {
+  return [self initWithFirestore:firestore
+                     documentKey:std::move(documentKey)
+                        document:document
+                        metadata:SnapshotMetadata(hasPendingWrites, fromCache)];
+}
+
+// NSObject Methods
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  // self class could be FIRDocumentSnapshot or subtype. So we compare with base type explicitly.
+  if (![other isKindOfClass:[FIRDocumentSnapshot class]]) return NO;
+
+  return _snapshot == static_cast<FIRDocumentSnapshot *>(other)->_snapshot;
+}
+
+- (NSUInteger)hash {
+  return _snapshot.Hash();
+}
+
+@dynamic exists;
+
+- (BOOL)exists {
+  return _snapshot.exists();
+}
+
+- (const absl::optional<Document> &)internalDocument {
+  return _snapshot.internal_document();
+}
+
+- (FIRDocumentReference *)reference {
+  return [[FIRDocumentReference alloc] initWithReference:_snapshot.CreateReference()];
+}
+
+- (NSString *)documentID {
+  return util::MakeNSString(_snapshot.document_id());
+}
+
+@dynamic metadata;
+
+- (FIRSnapshotMetadata *)metadata {
+  if (!_cachedMetadata) {
+    _cachedMetadata = [[FIRSnapshotMetadata alloc] initWithMetadata:_snapshot.metadata()];
+  }
+  return _cachedMetadata;
+}
+
+- (nullable NSDictionary<NSString *, id> *)data {
+  return [self dataWithServerTimestampBehavior:FIRServerTimestampBehaviorNone];
+}
+
+- (nullable NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior {
+  absl::optional<google_firestore_v1_Value> data = _snapshot.GetValue(FieldPath::EmptyPath());
+  if (!data) return nil;
+
+  FSTUserDataWriter *dataWriter =
+      [[FSTUserDataWriter alloc] initWithFirestore:_snapshot.firestore()
+                           serverTimestampBehavior:serverTimestampBehavior];
+  return [dataWriter convertedValue:*data];
+}
+
+- (nullable id)valueForField:(id)field {
+  return [self valueForField:field serverTimestampBehavior:FIRServerTimestampBehaviorNone];
+}
+
+- (nullable id)valueForField:(id)field
+     serverTimestampBehavior:(FIRServerTimestampBehavior)serverTimestampBehavior {
+  FieldPath fieldPath;
+  if ([field isKindOfClass:[NSString class]]) {
+    fieldPath = FieldPath::FromDotSeparatedString(MakeString(field));
+  } else if ([field isKindOfClass:[FIRFieldPath class]]) {
+    fieldPath = ((FIRFieldPath *)field).internalValue;
+  } else {
+    ThrowInvalidArgument("Subscript key must be an NSString or FIRFieldPath.");
+  }
+  absl::optional<google_firestore_v1_Value> fieldValue = _snapshot.GetValue(fieldPath);
+  if (!fieldValue) return nil;
+  FSTUserDataWriter *dataWriter =
+      [[FSTUserDataWriter alloc] initWithFirestore:_snapshot.firestore()
+                           serverTimestampBehavior:serverTimestampBehavior];
+  return [dataWriter convertedValue:*fieldValue];
+}
+
+- (nullable id)objectForKeyedSubscript:(id)key {
+  return [self valueForField:key];
+}
+
+@end
+
+@implementation FIRQueryDocumentSnapshot
+
+- (NSDictionary<NSString *, id> *)data {
+  NSDictionary<NSString *, id> *data = [super data];
+  HARD_ASSERT(data, "Document in a QueryDocumentSnapshot should exist");
+  return data;
+}
+
+- (NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior {
+  NSDictionary<NSString *, id> *data =
+      [super dataWithServerTimestampBehavior:serverTimestampBehavior];
+  HARD_ASSERT(data, "Document in a QueryDocumentSnapshot should exist");
+  return data;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath+Internal.h
new file mode 100644
index 0000000..019ac9a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath+Internal.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFieldPath.h"
+
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace model = firebase::firestore::model;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFieldPath ()
+
+/** Internal field path representation */
+- (const model::FieldPath &)internalValue;
+
+- (instancetype)initPrivate:(model::FieldPath)path NS_DESIGNATED_INITIALIZER;
+
+@end
+
+/** Internal FIRFieldPath API we don't want exposed in our public header files. */
+@interface FIRFieldPath (Internal)
+
++ (instancetype)pathWithDotSeparatedString:(NSString *)path;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath.mm
new file mode 100644
index 0000000..f93e21c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldPath.mm	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFieldPath.h"
+
+#include <functional>
+#include <string>
+#include <utility>
+#include <vector>
+
+#import "Firestore/Source/API/FIRFieldPath+Internal.h"
+
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::model::FieldPath;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFieldPath () {
+  /** Internal field path representation */
+  firebase::firestore::model::FieldPath _internalValue;
+}
+
+@end
+
+@implementation FIRFieldPath
+
+- (instancetype)initWithFields:(NSArray<NSString *> *)fieldNames {
+  if (fieldNames.count == 0) {
+    ThrowInvalidArgument("Invalid field path. Provided names must not be empty.");
+  }
+
+  std::vector<std::string> converted;
+  converted.reserve(fieldNames.count);
+  for (NSString *fieldName in fieldNames) {
+    converted.emplace_back(util::MakeString(fieldName));
+  }
+
+  return [self initPrivate:FieldPath::FromSegments(std::move(converted))];
+}
+
++ (instancetype)documentID {
+  return [[FIRFieldPath alloc] initPrivate:FieldPath::KeyFieldPath()];
+}
+
+- (instancetype)initPrivate:(FieldPath)fieldPath {
+  if (self = [super init]) {
+    _internalValue = std::move(fieldPath);
+  }
+  return self;
+}
+
++ (instancetype)pathWithDotSeparatedString:(NSString *)path {
+  return
+      [[FIRFieldPath alloc] initPrivate:FieldPath::FromDotSeparatedString(util::MakeString(path))];
+}
+
+- (id)copyWithZone:(__unused NSZone *_Nullable)zone {
+  return [[[self class] alloc] initPrivate:_internalValue];
+}
+
+- (BOOL)isEqual:(nullable id)object {
+  if (self == object) {
+    return YES;
+  }
+
+  if (![object isKindOfClass:[FIRFieldPath class]]) {
+    return NO;
+  }
+
+  return _internalValue == ((FIRFieldPath *)object)->_internalValue;
+}
+
+- (NSUInteger)hash {
+  return util::Hash(_internalValue);
+}
+
+- (const firebase::firestore::model::FieldPath &)internalValue {
+  return _internalValue;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue+Internal.h
new file mode 100644
index 0000000..7e0193d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue+Internal.h	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFieldValue.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFieldValue (Internal)
+/**
+ * The method name (e.g. "FieldValue.delete()") that was used to create this FIRFieldValue
+ * instance, for use in error messages, etc.
+ */
+@property(nonatomic, strong, readonly) NSString *methodName;
+@end
+
+/**
+ * FIRFieldValue class for field deletes. Exposed internally so code can do isKindOfClass checks on
+ * it.
+ */
+@interface FSTDeleteFieldValue : FIRFieldValue
+- (instancetype)init NS_UNAVAILABLE;
+@end
+
+/**
+ * FIRFieldValue class for server timestamps. Exposed internally so code can do isKindOfClass checks
+ * on it.
+ */
+@interface FSTServerTimestampFieldValue : FIRFieldValue
+- (instancetype)init NS_UNAVAILABLE;
+@end
+
+/** FIRFieldValue class for array unions. */
+@interface FSTArrayUnionFieldValue : FIRFieldValue
+- (instancetype)init NS_UNAVAILABLE;
+@property(strong, nonatomic, readonly) NSArray<id> *elements;
+@end
+
+/** FIRFieldValue class for array removes. */
+@interface FSTArrayRemoveFieldValue : FIRFieldValue
+- (instancetype)init NS_UNAVAILABLE;
+@property(strong, nonatomic, readonly) NSArray<id> *elements;
+@end
+
+/** FIRFieldValue class for number increments. */
+@interface FSTNumericIncrementFieldValue : FIRFieldValue
+- (instancetype)init NS_UNAVAILABLE;
+@property(strong, nonatomic, readonly) NSNumber *operand;
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue.mm
new file mode 100644
index 0000000..dccf735
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFieldValue.mm	
@@ -0,0 +1,181 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRFieldValue+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFieldValue ()
+- (instancetype)initPrivate NS_DESIGNATED_INITIALIZER;
+@end
+
+#pragma mark - FSTDeleteFieldValue
+
+@interface FSTDeleteFieldValue ()
+/** Returns a single shared instance of the class. */
++ (instancetype)deleteFieldValue;
+@end
+
+@implementation FSTDeleteFieldValue
+
+- (instancetype)initPrivate {
+  self = [super initPrivate];
+  return self;
+}
+
++ (instancetype)deleteFieldValue {
+  static FSTDeleteFieldValue *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FSTDeleteFieldValue alloc] initPrivate];
+  });
+  return sharedInstance;
+}
+
+- (NSString *)methodName {
+  return @"FieldValue.delete()";
+}
+
+@end
+
+#pragma mark - FSTServerTimestampFieldValue
+
+@interface FSTServerTimestampFieldValue ()
+/** Returns a single shared instance of the class. */
++ (instancetype)serverTimestampFieldValue;
+@end
+
+@implementation FSTServerTimestampFieldValue
+
+- (instancetype)initPrivate {
+  self = [super initPrivate];
+  return self;
+}
+
++ (instancetype)serverTimestampFieldValue {
+  static FSTServerTimestampFieldValue *sharedInstance = nil;
+  static dispatch_once_t onceToken;
+
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[FSTServerTimestampFieldValue alloc] initPrivate];
+  });
+  return sharedInstance;
+}
+
+- (NSString *)methodName {
+  return @"FieldValue.serverTimestamp()";
+}
+
+@end
+
+#pragma mark - FSTArrayUnionFieldValue
+
+@interface FSTArrayUnionFieldValue ()
+- (instancetype)initWithElements:(NSArray<id> *)elements;
+@end
+
+@implementation FSTArrayUnionFieldValue
+- (instancetype)initWithElements:(NSArray<id> *)elements {
+  if (self = [super initPrivate]) {
+    _elements = elements;
+  }
+  return self;
+}
+
+- (NSString *)methodName {
+  return @"FieldValue.arrayUnion()";
+}
+
+@end
+
+#pragma mark - FSTArrayRemoveFieldValue
+
+@interface FSTArrayRemoveFieldValue ()
+- (instancetype)initWithElements:(NSArray<id> *)elements;
+@end
+
+@implementation FSTArrayRemoveFieldValue
+- (instancetype)initWithElements:(NSArray<id> *)elements {
+  if (self = [super initPrivate]) {
+    _elements = elements;
+  }
+  return self;
+}
+
+- (NSString *)methodName {
+  return @"FieldValue.arrayRemove()";
+}
+
+@end
+
+#pragma mark - FSTNumericIncrementFieldValue
+
+/* FieldValue class for increment() transforms. */
+@interface FSTNumericIncrementFieldValue ()
+- (instancetype)initWithOperand:(NSNumber *)operand;
+@end
+
+@implementation FSTNumericIncrementFieldValue
+- (instancetype)initWithOperand:(NSNumber *)operand {
+  if (self = [super initPrivate]) {
+    _operand = operand;
+  }
+  return self;
+}
+
+- (NSString *)methodName {
+  return @"FieldValue.increment()";
+}
+
+@end
+
+#pragma mark - FIRFieldValue
+
+@implementation FIRFieldValue
+
+- (instancetype)initPrivate {
+  self = [super init];
+  return self;
+}
+
++ (instancetype)fieldValueForDelete {
+  return [FSTDeleteFieldValue deleteFieldValue];
+}
+
++ (instancetype)fieldValueForServerTimestamp {
+  return [FSTServerTimestampFieldValue serverTimestampFieldValue];
+}
+
++ (instancetype)fieldValueForArrayUnion:(NSArray<id> *)elements {
+  return [[FSTArrayUnionFieldValue alloc] initWithElements:elements];
+}
+
++ (instancetype)fieldValueForArrayRemove:(NSArray<id> *)elements {
+  return [[FSTArrayRemoveFieldValue alloc] initWithElements:elements];
+}
+
++ (instancetype)fieldValueForDoubleIncrement:(double)d {
+  return [[FSTNumericIncrementFieldValue alloc] initWithOperand:@(d)];
+}
+
++ (instancetype)fieldValueForIntegerIncrement:(int64_t)l {
+  return [[FSTNumericIncrementFieldValue alloc] initWithOperand:@(l)];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore+Internal.h
new file mode 100644
index 0000000..0e74f72
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore+Internal.h	
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestore.h"
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/util/async_queue.h"
+
+@class FIRApp;
+@class FSTFirestoreClient;
+@class FSTUserDataReader;
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+class FirebaseMetadataProvider;
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+namespace api = firebase::firestore::api;
+namespace auth = firebase::firestore::auth;
+namespace model = firebase::firestore::model;
+namespace remote = firebase::firestore::remote;
+namespace util = firebase::firestore::util;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Provides a registry management interface for FIRFirestore instances. */
+@protocol FSTFirestoreInstanceRegistry
+
+/** Removes the FIRFirestore instance with given database name from registry. */
+- (void)removeInstanceWithDatabase:(NSString *)database;
+
+@end
+
+@interface FIRFirestore (/* Init */)
+
+/**
+ * Initializes a Firestore object with all the required parameters directly. This exists so that
+ * tests can create FIRFirestore objects without needing FIRApp.
+ */
+- (instancetype)initWithDatabaseID:(model::DatabaseId)databaseID
+                    persistenceKey:(std::string)persistenceKey
+               credentialsProvider:(std::shared_ptr<auth::CredentialsProvider>)credentialsProvider
+                       workerQueue:(std::shared_ptr<util::AsyncQueue>)workerQueue
+          firebaseMetadataProvider:
+              (std::unique_ptr<remote::FirebaseMetadataProvider>)firebaseMetadataProvider
+                       firebaseApp:(FIRApp *)app
+                  instanceRegistry:(nullable id<FSTFirestoreInstanceRegistry>)registry;
+@end
+
+/** Internal FIRFirestore API we don't want exposed in our public header files. */
+@interface FIRFirestore (Internal)
+
++ (FIRFirestore *)recoverFromFirestore:(std::shared_ptr<api::Firestore>)firestore;
+
+- (void)terminateInternalWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+- (const std::shared_ptr<util::AsyncQueue> &)workerQueue;
+
+@property(nonatomic, assign, readonly) std::shared_ptr<api::Firestore> wrapped;
+
+@property(nonatomic, assign, readonly) const model::DatabaseId &databaseID;
+@property(nonatomic, strong, readonly) FSTUserDataReader *dataReader;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore.mm
new file mode 100644
index 0000000..f249f26
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestore.mm	
@@ -0,0 +1,487 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestore+Internal.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#import "FIRFirestoreSettings+Internal.h"
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+#import "Firestore/Source/API/FIRCollectionReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"
+#import "Firestore/Source/API/FIRLoadBundleTask+Internal.h"
+#import "Firestore/Source/API/FIRQuery+Internal.h"
+#import "Firestore/Source/API/FIRTransaction+Internal.h"
+#import "Firestore/Source/API/FIRWriteBatch+Internal.h"
+#import "Firestore/Source/API/FSTFirestoreComponent.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/api/collection_reference.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/write_batch.h"
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/byte_stream_apple.h"
+#include "Firestore/core/src/util/config.h"
+#include "Firestore/core/src/util/empty.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/exception_apple.h"
+#include "Firestore/core/src/util/executor_libdispatch.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/memory/memory.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::api::DocumentReference;
+using firebase::firestore::api::Firestore;
+using firebase::firestore::api::ListenerRegistration;
+using firebase::firestore::auth::CredentialsProvider;
+using firebase::firestore::core::EventListener;
+using firebase::firestore::model::DatabaseId;
+using firebase::firestore::remote::FirebaseMetadataProvider;
+using firebase::firestore::util::AsyncQueue;
+using firebase::firestore::util::ByteStreamApple;
+using firebase::firestore::util::Empty;
+using firebase::firestore::util::MakeCallback;
+using firebase::firestore::util::MakeNSError;
+using firebase::firestore::util::MakeNSString;
+using firebase::firestore::util::MakeString;
+using firebase::firestore::util::ObjcThrowHandler;
+using firebase::firestore::util::SetThrowHandler;
+using firebase::firestore::util::Status;
+using firebase::firestore::util::StatusOr;
+using firebase::firestore::util::ThrowIllegalState;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+using UserUpdateBlock = id _Nullable (^)(FIRTransaction *, NSError **);
+using UserTransactionCompletion = void (^)(id _Nullable, NSError *_Nullable);
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - FIRFirestore
+
+@interface FIRFirestore ()
+
+@property(nonatomic, strong, readonly) FSTUserDataReader *dataReader;
+
+@end
+
+@implementation FIRFirestore {
+  std::shared_ptr<Firestore> _firestore;
+  FIRFirestoreSettings *_settings;
+  __weak id<FSTFirestoreInstanceRegistry> _registry;
+}
+
++ (void)initialize {
+  if (self == [FIRFirestore class]) {
+    SetThrowHandler(ObjcThrowHandler);
+    Firestore::SetClientLanguage("gl-objc/");
+  }
+}
+
++ (instancetype)firestore {
+  FIRApp *app = [FIRApp defaultApp];
+  if (!app) {
+    ThrowIllegalState("Failed to get FirebaseApp instance. Please call FirebaseApp.configure() "
+                      "before using Firestore");
+  }
+  return [self firestoreForApp:app database:MakeNSString(DatabaseId::kDefault)];
+}
+
++ (instancetype)firestoreForApp:(FIRApp *)app {
+  return [self firestoreForApp:app database:MakeNSString(DatabaseId::kDefault)];
+}
+
+// TODO(b/62410906): make this public
++ (instancetype)firestoreForApp:(FIRApp *)app database:(NSString *)database {
+  if (!app) {
+    ThrowInvalidArgument("FirebaseApp instance may not be nil. Use FirebaseApp.app() if you'd like "
+                         "to use the default FirebaseApp instance.");
+  }
+  if (!database) {
+    ThrowInvalidArgument("Database identifier may not be nil. Use '%s' if you want the default "
+                         "database",
+                         DatabaseId::kDefault);
+  }
+
+  id<FSTFirestoreMultiDBProvider> provider =
+      FIR_COMPONENT(FSTFirestoreMultiDBProvider, app.container);
+  return [provider firestoreForDatabase:database];
+}
+
+- (instancetype)initWithDatabaseID:(model::DatabaseId)databaseID
+                    persistenceKey:(std::string)persistenceKey
+               credentialsProvider:(std::shared_ptr<CredentialsProvider>)credentialsProvider
+                       workerQueue:(std::shared_ptr<AsyncQueue>)workerQueue
+          firebaseMetadataProvider:
+              (std::unique_ptr<FirebaseMetadataProvider>)firebaseMetadataProvider
+                       firebaseApp:(FIRApp *)app
+                  instanceRegistry:(nullable id<FSTFirestoreInstanceRegistry>)registry {
+  if (self = [super init]) {
+    _firestore = std::make_shared<Firestore>(
+        std::move(databaseID), std::move(persistenceKey), std::move(credentialsProvider),
+        std::move(workerQueue), std::move(firebaseMetadataProvider), (__bridge void *)self);
+
+    _app = app;
+    _registry = registry;
+
+    FSTPreConverterBlock block = ^id _Nullable(id _Nullable input) {
+      if ([input isKindOfClass:[FIRDocumentReference class]]) {
+        auto documentReference = (FIRDocumentReference *)input;
+        return [[FSTDocumentKeyReference alloc] initWithKey:documentReference.key
+                                                 databaseID:documentReference.firestore.databaseID];
+      } else {
+        return input;
+      }
+    };
+
+    _dataReader = [[FSTUserDataReader alloc] initWithDatabaseID:_firestore->database_id()
+                                                   preConverter:block];
+    // Use the property setter so the default settings get plumbed into _firestoreClient.
+    self.settings = [[FIRFirestoreSettings alloc] init];
+  }
+  return self;
+}
+
+- (FIRFirestoreSettings *)settings {
+  // Disallow mutation of our internal settings
+  return [_settings copy];
+}
+
+- (void)setSettings:(FIRFirestoreSettings *)settings {
+  if (![settings isEqual:_settings]) {
+    _settings = settings;
+    _firestore->set_settings([settings internalSettings]);
+
+#if HAVE_LIBDISPATCH
+    std::unique_ptr<util::Executor> user_executor =
+        absl::make_unique<util::ExecutorLibdispatch>(settings.dispatchQueue);
+#else
+    // It's possible to build without libdispatch on macOS for testing purposes.
+    // In this case, avoid breaking the build.
+    std::unique_ptr<util::Executor> user_executor =
+        util::Executor::CreateSerial("com.google.firebase.firestore.user");
+#endif  // HAVE_LIBDISPATCH
+
+    _firestore->set_user_executor(std::move(user_executor));
+  }
+}
+
+- (FIRCollectionReference *)collectionWithPath:(NSString *)collectionPath {
+  if (!collectionPath) {
+    ThrowInvalidArgument("Collection path cannot be nil.");
+  }
+  if (!collectionPath.length) {
+    ThrowInvalidArgument("Collection path cannot be empty.");
+  }
+  if ([collectionPath containsString:@"//"]) {
+    ThrowInvalidArgument("Invalid path (%s). Paths must not contain // in them.", collectionPath);
+  }
+
+  return [[FIRCollectionReference alloc]
+      initWithReference:_firestore->GetCollection(MakeString(collectionPath))];
+}
+
+- (FIRDocumentReference *)documentWithPath:(NSString *)documentPath {
+  if (!documentPath) {
+    ThrowInvalidArgument("Document path cannot be nil.");
+  }
+  if (!documentPath.length) {
+    ThrowInvalidArgument("Document path cannot be empty.");
+  }
+  if ([documentPath containsString:@"//"]) {
+    ThrowInvalidArgument("Invalid path (%s). Paths must not contain // in them.", documentPath);
+  }
+
+  DocumentReference documentReference = _firestore->GetDocument(MakeString(documentPath));
+  return [[FIRDocumentReference alloc] initWithReference:std::move(documentReference)];
+}
+
+- (FIRQuery *)collectionGroupWithID:(NSString *)collectionID {
+  if (!collectionID) {
+    ThrowInvalidArgument("Collection ID cannot be nil.");
+  }
+  if (!collectionID.length) {
+    ThrowInvalidArgument("Collection ID cannot be empty.");
+  }
+  if ([collectionID containsString:@"/"]) {
+    ThrowInvalidArgument("Invalid collection ID (%s). Collection IDs must not contain / in them.",
+                         collectionID);
+  }
+
+  auto query = _firestore->GetCollectionGroup(MakeString(collectionID));
+  return [[FIRQuery alloc] initWithQuery:std::move(query) firestore:_firestore];
+}
+
+- (FIRWriteBatch *)batch {
+  return [FIRWriteBatch writeBatchWithDataReader:self.dataReader writeBatch:_firestore->GetBatch()];
+}
+
+- (void)runTransactionWithBlock:(UserUpdateBlock)updateBlock
+                  dispatchQueue:(dispatch_queue_t)queue
+                     completion:(UserTransactionCompletion)completion {
+  if (!updateBlock) {
+    ThrowInvalidArgument("Transaction block cannot be nil.");
+  }
+  if (!completion) {
+    ThrowInvalidArgument("Transaction completion block cannot be nil.");
+  }
+
+  class TransactionResult {
+   public:
+    TransactionResult(FIRFirestore *firestore,
+                      UserUpdateBlock update_block,
+                      dispatch_queue_t queue,
+                      UserTransactionCompletion completion)
+        : firestore_(firestore),
+          user_update_block_(update_block),
+          queue_(queue),
+          user_completion_(completion) {
+    }
+
+    void RunUpdateBlock(std::shared_ptr<core::Transaction> internalTransaction,
+                        core::TransactionResultCallback internalCallback) {
+      dispatch_async(queue_, ^{
+        auto transaction = [FIRTransaction transactionWithInternalTransaction:internalTransaction
+                                                                    firestore:firestore_];
+
+        NSError *_Nullable error = nil;
+        user_result_ = user_update_block_(transaction, &error);
+
+        // If the user set an error, disregard the result.
+        if (error) {
+          // If the error is a user error, set flag to not retry the transaction.
+          if (error.domain != FIRFirestoreErrorDomain) {
+            internalTransaction->MarkPermanentlyFailed();
+          }
+          internalCallback(Status::FromNSError(error));
+        } else {
+          internalCallback(Status::OK());
+        }
+      });
+    }
+
+    void HandleFinalStatus(const Status &status) {
+      if (!status.ok()) {
+        user_completion_(nil, MakeNSError(status));
+        return;
+      }
+
+      user_completion_(user_result_, nil);
+    }
+
+   private:
+    FIRFirestore *firestore_;
+    UserUpdateBlock user_update_block_;
+    dispatch_queue_t queue_;
+    UserTransactionCompletion user_completion_;
+
+    id _Nullable user_result_;
+  };
+
+  auto result_capture = std::make_shared<TransactionResult>(self, updateBlock, queue, completion);
+
+  // Wrap the user-supplied updateBlock in a core C++ compatible callback. Wrap the result of the
+  // updateBlock invocation up in a TransactionResult for tunneling through the internals of the
+  // system.
+  auto internalUpdateBlock = [result_capture](
+                                 std::shared_ptr<core::Transaction> internalTransaction,
+                                 core::TransactionResultCallback internalCallback) {
+    result_capture->RunUpdateBlock(internalTransaction, internalCallback);
+  };
+
+  // Unpacks the TransactionResult value and calls the user completion handler.
+  //
+  // PORTING NOTE: Other platforms where the user return value is internally representable don't
+  // need this wrapper.
+  auto objcTranslator = [result_capture](const Status &status) {
+    result_capture->HandleFinalStatus(status);
+  };
+
+  _firestore->RunTransaction(std::move(internalUpdateBlock), std::move(objcTranslator));
+}
+
+- (void)runTransactionWithBlock:(id _Nullable (^)(FIRTransaction *, NSError **error))updateBlock
+                     completion:
+                         (void (^)(id _Nullable result, NSError *_Nullable error))completion {
+  static dispatch_queue_t transactionDispatchQueue;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    transactionDispatchQueue = dispatch_queue_create("com.google.firebase.firestore.transaction",
+                                                     DISPATCH_QUEUE_CONCURRENT);
+  });
+  [self runTransactionWithBlock:updateBlock
+                  dispatchQueue:transactionDispatchQueue
+                     completion:completion];
+}
+
++ (void)enableLogging:(BOOL)logging {
+  util::LogSetLevel(logging ? util::kLogLevelDebug : util::kLogLevelNotice);
+}
+
+- (void)useEmulatorWithHost:(NSString *)host port:(NSInteger)port {
+  if (!host.length) {
+    ThrowInvalidArgument("Host cannot be nil or empty.");
+  }
+  if (!_settings.isUsingDefaultHost) {
+    LOG_WARN("Overriding previously-set host value: %@", _settings.host);
+  }
+  // Use a new settings so the new settings are automatically plumbed
+  // to the underlying Firestore objects.
+  NSString *settingsHost = [NSString stringWithFormat:@"%@:%li", host, (long)port];
+  FIRFirestoreSettings *newSettings = [_settings copy];
+  newSettings.host = settingsHost;
+  self.settings = newSettings;
+}
+
+- (void)enableNetworkWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  _firestore->EnableNetwork(MakeCallback(completion));
+}
+
+- (void)disableNetworkWithCompletion:(nullable void (^)(NSError *_Nullable))completion {
+  _firestore->DisableNetwork(MakeCallback(completion));
+}
+
+- (void)clearPersistenceWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  _firestore->ClearPersistence(MakeCallback(completion));
+}
+
+- (void)waitForPendingWritesWithCompletion:(void (^)(NSError *_Nullable error))completion {
+  _firestore->WaitForPendingWrites(MakeCallback(completion));
+}
+
+- (void)terminateWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  id<FSTFirestoreInstanceRegistry> strongRegistry = _registry;
+  if (strongRegistry) {
+    [strongRegistry
+        removeInstanceWithDatabase:MakeNSString(_firestore->database_id().database_id())];
+  }
+  [self terminateInternalWithCompletion:completion];
+}
+
+- (id<FIRListenerRegistration>)addSnapshotsInSyncListener:(void (^)(void))listener {
+  std::unique_ptr<core::EventListener<Empty>> eventListener =
+      core::EventListener<Empty>::Create([listener](const StatusOr<Empty> &) { listener(); });
+  std::unique_ptr<ListenerRegistration> result =
+      _firestore->AddSnapshotsInSyncListener(std::move(eventListener));
+  return [[FSTListenerRegistration alloc] initWithRegistration:std::move(result)];
+}
+
+- (FIRLoadBundleTask *)loadBundle:(nonnull NSData *)bundleData {
+  auto stream = absl::make_unique<ByteStreamApple>([[NSInputStream alloc] initWithData:bundleData]);
+  return [self loadBundleStream:[[NSInputStream alloc] initWithData:bundleData] completion:nil];
+}
+
+- (FIRLoadBundleTask *)loadBundle:(NSData *)bundleData
+                       completion:(nullable void (^)(FIRLoadBundleTaskProgress *_Nullable progress,
+                                                     NSError *_Nullable error))completion {
+  return [self loadBundleStream:[[NSInputStream alloc] initWithData:bundleData]
+                     completion:completion];
+}
+
+- (FIRLoadBundleTask *)loadBundleStream:(NSInputStream *)bundleStream {
+  return [self loadBundleStream:bundleStream completion:nil];
+}
+
+- (FIRLoadBundleTask *)loadBundleStream:(NSInputStream *)bundleStream
+                             completion:
+                                 (nullable void (^)(FIRLoadBundleTaskProgress *_Nullable progress,
+                                                    NSError *_Nullable error))completion {
+  auto stream = absl::make_unique<ByteStreamApple>(bundleStream);
+  std::shared_ptr<api::LoadBundleTask> task = _firestore->LoadBundle(std::move(stream));
+  auto callback = [completion](api::LoadBundleTaskProgress progress) {
+    if (!completion) {
+      return;
+    }
+
+    // Ignoring `kInProgress` because we are setting up for completion callback.
+    if (progress.state() == api::LoadBundleTaskState::kSuccess) {
+      completion([[FIRLoadBundleTaskProgress alloc] initWithInternal:progress], nil);
+    } else if (progress.state() == api::LoadBundleTaskState::kError) {
+      NSError *error = nil;
+      if (!progress.error_status().ok()) {
+        LOG_WARN("Progress set to Error, but error_status() is ok()");
+        error = util::MakeNSError(firebase::firestore::Error::kErrorUnknown,
+                                  "Loading bundle failed with unknown error");
+      } else {
+        error = util::MakeNSError(progress.error_status());
+      }
+      completion([[FIRLoadBundleTaskProgress alloc] initWithInternal:progress], error);
+    }
+  };
+
+  task->SetLastObserver(callback);
+  return [[FIRLoadBundleTask alloc] initWithTask:task];
+}
+
+- (void)getQueryNamed:(NSString *)name completion:(void (^)(FIRQuery *_Nullable query))completion {
+  auto firestore = _firestore;
+  auto callback = [completion, firestore](core::Query query, bool found) {
+    if (!completion) {
+      return;
+    }
+
+    if (found) {
+      FIRQuery *firQuery = [[FIRQuery alloc] initWithQuery:std::move(query) firestore:firestore];
+      completion(firQuery);
+    } else {
+      completion(nil);
+    }
+  };
+  _firestore->GetNamedQuery(MakeString(name), callback);
+}
+
+@end
+
+@implementation FIRFirestore (Internal)
+
+- (std::shared_ptr<Firestore>)wrapped {
+  return _firestore;
+}
+
+- (const std::shared_ptr<util::AsyncQueue> &)workerQueue {
+  return _firestore->worker_queue();
+}
+
+- (const DatabaseId &)databaseID {
+  return _firestore->database_id();
+}
+
++ (FIRFirestore *)recoverFromFirestore:(std::shared_ptr<Firestore>)firestore {
+  return (__bridge FIRFirestore *)firestore->extension();
+}
+
+- (void)terminateInternalWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  _firestore->Terminate(MakeCallback(completion));
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings+Internal.h
new file mode 100644
index 0000000..f83ab75
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings+Internal.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestoreSettings.h"
+
+#import <Foundation/Foundation.h>
+
+#include "Firestore/core/src/api/settings.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRFirestoreSettings (Internal)
+
+/** Returns whether or not the host has been set to a non-default value. */
+@property(nonatomic, readonly) BOOL isUsingDefaultHost;
+
+/** Converts this FIRFirestoreSettings instance into an api::Settings object. */
+- (firebase::firestore::api::Settings)internalSettings;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings.mm
new file mode 100644
index 0000000..03b5571
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSettings.mm	
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestoreSettings.h"
+
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/base/attributes.h"
+#include "absl/memory/memory.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace api = firebase::firestore::api;
+namespace util = firebase::firestore::util;
+using api::Settings;
+using util::ThrowInvalidArgument;
+
+// Public constant
+ABSL_CONST_INIT extern "C" const int64_t kFIRFirestoreCacheSizeUnlimited =
+    Settings::CacheSizeUnlimited;
+
+@implementation FIRFirestoreSettings
+
+- (instancetype)init {
+  if (self = [super init]) {
+    _host = [NSString stringWithUTF8String:Settings::DefaultHost];
+    _sslEnabled = Settings::DefaultSslEnabled;
+    _dispatchQueue = dispatch_get_main_queue();
+    _persistenceEnabled = Settings::DefaultPersistenceEnabled;
+    _cacheSizeBytes = Settings::DefaultCacheSizeBytes;
+  }
+  return self;
+}
+
+- (BOOL)isEqual:(id)other {
+  if (self == other) {
+    return YES;
+  } else if (![other isKindOfClass:[FIRFirestoreSettings class]]) {
+    return NO;
+  }
+
+  FIRFirestoreSettings *otherSettings = (FIRFirestoreSettings *)other;
+  return [self.host isEqual:otherSettings.host] &&
+         self.isSSLEnabled == otherSettings.isSSLEnabled &&
+         self.dispatchQueue == otherSettings.dispatchQueue &&
+         self.isPersistenceEnabled == otherSettings.isPersistenceEnabled &&
+         self.cacheSizeBytes == otherSettings.cacheSizeBytes;
+}
+
+- (NSUInteger)hash {
+  NSUInteger result = [self.host hash];
+  result = 31 * result + (self.isSSLEnabled ? 1231 : 1237);
+  // Ignore the dispatchQueue to avoid having to deal with sizeof(dispatch_queue_t).
+  result = 31 * result + (self.isPersistenceEnabled ? 1231 : 1237);
+  result = 31 * result + (NSUInteger)self.cacheSizeBytes;
+  return result;
+}
+
+- (id)copyWithZone:(__unused NSZone *_Nullable)zone {
+  FIRFirestoreSettings *copy = [[FIRFirestoreSettings alloc] init];
+  copy.host = _host;
+  copy.sslEnabled = _sslEnabled;
+  copy.dispatchQueue = _dispatchQueue;
+  copy.persistenceEnabled = _persistenceEnabled;
+  copy.cacheSizeBytes = _cacheSizeBytes;
+  return copy;
+}
+
+- (void)setHost:(NSString *)host {
+  if (!host) {
+    ThrowInvalidArgument("Host setting may not be nil. You should generally just use the default "
+                         "value (which is %s)",
+                         Settings::DefaultHost);
+  }
+  _host = [host mutableCopy];
+}
+
+- (void)setDispatchQueue:(dispatch_queue_t)dispatchQueue {
+  if (!dispatchQueue) {
+    ThrowInvalidArgument(
+        "Dispatch queue setting may not be nil. Create a new dispatch queue with "
+        "dispatch_queue_create(\"com.example.MyQueue\", NULL) or just use the default (which is "
+        "the main queue, returned from dispatch_get_main_queue())");
+  }
+  _dispatchQueue = dispatchQueue;
+}
+
+- (void)setCacheSizeBytes:(int64_t)cacheSizeBytes {
+  if (cacheSizeBytes != kFIRFirestoreCacheSizeUnlimited &&
+      cacheSizeBytes < Settings::MinimumCacheSizeBytes) {
+    ThrowInvalidArgument("Cache size must be set to at least %s bytes",
+                         Settings::MinimumCacheSizeBytes);
+  }
+  _cacheSizeBytes = cacheSizeBytes;
+}
+
+- (BOOL)isUsingDefaultHost {
+  NSString *defaultHost = [NSString stringWithUTF8String:Settings::DefaultHost];
+  return [self.host isEqualToString:defaultHost];
+}
+
+- (Settings)internalSettings {
+  Settings settings;
+  settings.set_host(util::MakeString(_host));
+  settings.set_ssl_enabled(_sslEnabled);
+  settings.set_persistence_enabled(_persistenceEnabled);
+  settings.set_cache_size_bytes(_cacheSizeBytes);
+  return settings;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource+Internal.h
new file mode 100644
index 0000000..3cf08c0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource+Internal.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRFirestoreSource.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+enum class Source;
+
+Source MakeSource(FIRFirestoreSource source);
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource.mm
new file mode 100644
index 0000000..c43b32d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreSource.mm	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRFirestoreSource+Internal.h"
+
+#include "Firestore/core/src/api/source.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+Source MakeSource(FIRFirestoreSource source) {
+  switch (source) {
+    case FIRFirestoreSourceDefault:
+      return Source::Default;
+    case FIRFirestoreSourceServer:
+      return Source::Server;
+    case FIRFirestoreSourceCache:
+      return Source::Cache;
+  }
+
+  UNREACHABLE();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.h
new file mode 100644
index 0000000..ca1a166
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.h	
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/** Version for Firestore. */
+
+#import <Foundation/Foundation.h>
+
+/** Version string for the Firebase Firestore SDK. */
+FOUNDATION_EXPORT const char *const FIRFirestoreVersionString;
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.mm
new file mode 100644
index 0000000..94d9103
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRFirestoreVersion.mm	
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRFirestoreVersion.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_version.h"
+
+using firebase::firestore::kFirestoreVersionString;
+
+// Because `kFirestoreVersionString` is subject to constant initialization, this
+// is not affected by static initialization order fiasco.
+extern "C" const char *const FIRFirestoreVersionString = kFirestoreVersionString;
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint+Internal.h
new file mode 100644
index 0000000..4fe0f57
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint+Internal.h	
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRGeoPoint.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Internal FIRGeoPoint API we don't want exposed in our public header files. */
+@interface FIRGeoPoint (Internal)
+
+- (NSComparisonResult)compare:(FIRGeoPoint *)other;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint.mm
new file mode 100644
index 0000000..8a64d96
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRGeoPoint.mm	
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRGeoPoint+Internal.h"
+
+#include "Firestore/core/include/firebase/firestore/geo_point.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/exception.h"
+
+using firebase::firestore::util::ThrowInvalidArgument;
+using firebase::firestore::util::DoubleBitwiseEquals;
+using firebase::firestore::util::DoubleBitwiseHash;
+using firebase::firestore::util::WrapCompare;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRGeoPoint
+
+- (instancetype)initWithLatitude:(double)latitude longitude:(double)longitude {
+  if (self = [super init]) {
+    if (latitude < -90 || latitude > 90 || !isfinite(latitude)) {
+      ThrowInvalidArgument("GeoPoint requires a latitude value in the range of [-90, 90], "
+                           "but was %s",
+                           latitude);
+    }
+    if (longitude < -180 || longitude > 180 || !isfinite(longitude)) {
+      ThrowInvalidArgument("GeoPoint requires a longitude value in the range of [-180, 180], "
+                           "but was %s",
+                           longitude);
+    }
+
+    _latitude = latitude;
+    _longitude = longitude;
+  }
+  return self;
+}
+
+#pragma mark - NSObject methods
+
+- (NSString *)description {
+  return [NSString stringWithFormat:@"<FIRGeoPoint: (%f, %f)>", self.latitude, self.longitude];
+}
+
+- (BOOL)isEqual:(id)other {
+  if (self == other) {
+    return YES;
+  }
+  if (![other isKindOfClass:[FIRGeoPoint class]]) {
+    return NO;
+  }
+  FIRGeoPoint *otherGeoPoint = (FIRGeoPoint *)other;
+  return DoubleBitwiseEquals(self.latitude, otherGeoPoint.latitude) &&
+         DoubleBitwiseEquals(self.longitude, otherGeoPoint.longitude);
+}
+
+- (NSUInteger)hash {
+  return 31 * DoubleBitwiseHash(self.latitude) + DoubleBitwiseHash(self.longitude);
+}
+
+/** Implements NSCopying without actually copying because geopoints are immutable. */
+- (id)copyWithZone:(__unused NSZone *_Nullable)zone {
+  return self;
+}
+
+@end
+
+@implementation FIRGeoPoint (Internal)
+
+- (NSComparisonResult)compare:(FIRGeoPoint *)other {
+  NSComparisonResult result = WrapCompare<double>(self.latitude, other.latitude);
+  if (result != NSOrderedSame) {
+    return result;
+  } else {
+    return WrapCompare<double>(self.longitude, other.longitude);
+  }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration+Internal.h
new file mode 100644
index 0000000..cd6436d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration+Internal.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <memory>
+
+#import "FIRListenerRegistration.h"
+
+#include "Firestore/core/src/api/listener_registration.h"
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Private implementation of the FIRListenerRegistration protocol. */
+@interface FSTListenerRegistration : NSObject <FIRListenerRegistration>
+
+- (instancetype)initWithRegistration:(std::unique_ptr<api::ListenerRegistration>)registration;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration.mm
new file mode 100644
index 0000000..82b09d2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRListenerRegistration.mm	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FSTListenerRegistration {
+  std::unique_ptr<api::ListenerRegistration> _registration;
+}
+
+- (instancetype)initWithRegistration:(std::unique_ptr<api::ListenerRegistration>)registration {
+  if (self = [super init]) {
+    _registration = std::move(registration);
+  }
+  return self;
+}
+
+- (void)remove {
+  _registration->Remove();
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask+Internal.h
new file mode 100644
index 0000000..42a9a43
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask+Internal.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <memory>
+
+#import "FIRLoadBundleTask.h"
+
+#include "Firestore/core/src/api/load_bundle_task.h"
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRLoadBundleTaskProgress (Internal)
+
+- (instancetype)initWithInternal:(api::LoadBundleTaskProgress)progress;
+
+@end
+
+/** Private implementation of the FIRListenerRegistration protocol. */
+@interface FIRLoadBundleTask (Internal)
+
+- (instancetype)initWithTask:(std::shared_ptr<api::LoadBundleTask>)task;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask.mm
new file mode 100644
index 0000000..dbcc75f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRLoadBundleTask.mm	
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRLoadBundleTask.h"
+
+#include <memory>
+
+#import "Firestore/Source/API/FIRLoadBundleTask+Internal.h"
+
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/util/exception.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace {
+
+using firebase::firestore::util::ThrowInvalidArgument;
+
+}  // namespace
+
+@implementation FIRLoadBundleTaskProgress {
+}
+
+- (instancetype)initWithInternal:(api::LoadBundleTaskProgress)progress {
+  if (self = [super init]) {
+    _bytesLoaded = progress.bytes_loaded();
+    _documentsLoaded = progress.documents_loaded();
+    _totalBytes = progress.total_bytes();
+    _totalDocuments = progress.total_documents();
+
+    switch (progress.state()) {
+      case api::LoadBundleTaskState::kInProgress:
+        _state = FIRLoadBundleTaskStateInProgress;
+        break;
+      case api::LoadBundleTaskState::kSuccess:
+        _state = FIRLoadBundleTaskStateSuccess;
+        break;
+      case api::LoadBundleTaskState::kError:
+        _state = FIRLoadBundleTaskStateError;
+        break;
+    }
+  }
+  return self;
+}
+
+- (BOOL)isEqual:(id)other {
+  if (self == other) {
+    return YES;
+  } else if (![other isKindOfClass:[FIRLoadBundleTaskProgress class]]) {
+    return NO;
+  }
+
+  FIRLoadBundleTaskProgress *otherProgress = (FIRLoadBundleTaskProgress *)other;
+  return self.documentsLoaded == otherProgress.documentsLoaded &&
+         self.totalDocuments == otherProgress.totalDocuments &&
+         self.bytesLoaded == otherProgress.bytesLoaded &&
+         self.totalBytes == otherProgress.totalBytes && self.state == otherProgress.state;
+}
+
+@end
+
+@implementation FIRLoadBundleTask {
+  std::shared_ptr<api::LoadBundleTask> _task;
+}
+
+- (instancetype)initWithTask:(std::shared_ptr<api::LoadBundleTask>)task {
+  if (self = [super init]) {
+    _task = std::move(task);
+  }
+  return self;
+}
+
+- (FIRLoadBundleObserverHandle)addObserver:(void (^)(FIRLoadBundleTaskProgress *progress))observer {
+  if (!observer) {
+    ThrowInvalidArgument("Handler cannot be nil");
+  }
+
+  api::LoadBundleTask::ProgressObserver core_observer =
+      [observer](api::LoadBundleTaskProgress internal_progress) {
+        observer([[FIRLoadBundleTaskProgress alloc] initWithInternal:internal_progress]);
+      };
+  return _task->Observe(std::move(core_observer));
+}
+
+- (void)removeObserverWithHandle:(FIRLoadBundleObserverHandle)handle {
+  _task->RemoveObserver(handle);
+}
+
+- (void)removeAllObservers {
+  _task->RemoveAllObservers();
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery+Internal.h
new file mode 100644
index 0000000..05fe19c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery+Internal.h	
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRQuery.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/core/core_fwd.h"
+
+namespace api = firebase::firestore::api;
+namespace core = firebase::firestore::core;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRQuery (/* Init */)
+
+- (instancetype)initWithQuery:(api::Query &&)query NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithQuery:(core::Query)query
+                    firestore:(std::shared_ptr<api::Firestore>)firestore;
+
+@end
+
+/** Internal FIRQuery API we don't want exposed in our public header files. */
+@interface FIRQuery (Internal)
+
+- (const core::Query &)query;
+
+- (const api::Query &)apiQuery;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery.mm
new file mode 100644
index 0000000..dd3b938
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuery.mm	
@@ -0,0 +1,656 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRQuery.h"
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#import "FIRDocumentReference.h"
+#import "FIRFirestoreErrors.h"
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+#import "Firestore/Source/API/FIRFieldPath+Internal.h"
+#import "Firestore/Source/API/FIRFieldValue+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRFirestoreSource+Internal.h"
+#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"
+#import "Firestore/Source/API/FIRQuery+Internal.h"
+#import "Firestore/Source/API/FIRQuerySnapshot+Internal.h"
+#import "Firestore/Source/API/FIRSnapshotMetadata+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/api/query_core.h"
+#include "Firestore/core/src/api/query_listener_registration.h"
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/api/source.h"
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/direction.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/listen_options.h"
+#include "Firestore/core/src/core/order_by.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/server_timestamp_util.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+
+namespace util = firebase::firestore::util;
+namespace nanopb = firebase::firestore::nanopb;
+using firebase::firestore::api::Firestore;
+using firebase::firestore::api::Query;
+using firebase::firestore::api::QueryListenerRegistration;
+using firebase::firestore::api::QuerySnapshot;
+using firebase::firestore::api::QuerySnapshotListener;
+using firebase::firestore::api::SnapshotMetadata;
+using firebase::firestore::api::Source;
+using firebase::firestore::core::AsyncEventListener;
+using firebase::firestore::core::Bound;
+using firebase::firestore::core::Direction;
+using firebase::firestore::core::EventListener;
+using firebase::firestore::core::Filter;
+using firebase::firestore::core::ListenOptions;
+using firebase::firestore::core::OrderBy;
+using firebase::firestore::core::OrderByList;
+using firebase::firestore::core::QueryListener;
+using firebase::firestore::core::ViewSnapshot;
+using firebase::firestore::google_firestore_v1_ArrayValue;
+using firebase::firestore::google_firestore_v1_Value;
+using firebase::firestore::google_firestore_v1_Value_fields;
+using firebase::firestore::model::DatabaseId;
+using firebase::firestore::model::DeepClone;
+using firebase::firestore::model::Document;
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::FieldPath;
+using firebase::firestore::model::GetTypeOrder;
+using firebase::firestore::model::IsServerTimestamp;
+using firebase::firestore::model::RefValue;
+using firebase::firestore::model::ResourcePath;
+using firebase::firestore::model::TypeOrder;
+using firebase::firestore::nanopb::CheckedSize;
+using firebase::firestore::nanopb::MakeArray;
+using firebase::firestore::nanopb::MakeString;
+using firebase::firestore::nanopb::Message;
+using firebase::firestore::nanopb::SharedMessage;
+using firebase::firestore::nanopb::MakeSharedMessage;
+using firebase::firestore::util::MakeNSError;
+using firebase::firestore::util::MakeString;
+using firebase::firestore::util::StatusOr;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace {
+
+FieldPath MakeFieldPath(NSString *field) {
+  return FieldPath::FromDotSeparatedString(MakeString(field));
+}
+
+FIRQuery *Wrap(Query &&query) {
+  return [[FIRQuery alloc] initWithQuery:std::move(query)];
+}
+
+int32_t SaturatedLimitValue(NSInteger limit) {
+  int32_t internal_limit;
+  if (limit == NSNotFound || limit >= core::Target::kNoLimit) {
+    internal_limit = core::Target::kNoLimit;
+  } else {
+    internal_limit = static_cast<int32_t>(limit);
+  }
+  return internal_limit;
+}
+
+}  // namespace
+
+@implementation FIRQuery {
+  Query _query;
+}
+
+#pragma mark - Constructor Methods
+
+- (instancetype)initWithQuery:(Query &&)query {
+  if (self = [super init]) {
+    _query = std::move(query);
+  }
+  return self;
+}
+
+- (instancetype)initWithQuery:(core::Query)query firestore:(std::shared_ptr<Firestore>)firestore {
+  return [self initWithQuery:Query{std::move(query), std::move(firestore)}];
+}
+
+#pragma mark - NSObject Methods
+
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  if (![[other class] isEqual:[self class]]) return NO;
+
+  auto otherQuery = static_cast<FIRQuery *>(other);
+  return _query == otherQuery->_query;
+}
+
+- (NSUInteger)hash {
+  return _query.Hash();
+}
+
+#pragma mark - Public Methods
+
+- (FIRFirestore *)firestore {
+  return [FIRFirestore recoverFromFirestore:_query.firestore()];
+}
+
+- (void)getDocumentsWithCompletion:(void (^)(FIRQuerySnapshot *_Nullable snapshot,
+                                             NSError *_Nullable error))completion {
+  _query.GetDocuments(Source::Default, [self wrapQuerySnapshotBlock:completion]);
+}
+
+- (void)getDocumentsWithSource:(FIRFirestoreSource)publicSource
+                    completion:(void (^)(FIRQuerySnapshot *_Nullable snapshot,
+                                         NSError *_Nullable error))completion {
+  Source source = api::MakeSource(publicSource);
+  _query.GetDocuments(source, [self wrapQuerySnapshotBlock:completion]);
+}
+
+- (id<FIRListenerRegistration>)addSnapshotListener:(FIRQuerySnapshotBlock)listener {
+  return [self addSnapshotListenerWithIncludeMetadataChanges:NO listener:listener];
+}
+
+- (id<FIRListenerRegistration>)
+    addSnapshotListenerWithIncludeMetadataChanges:(BOOL)includeMetadataChanges
+                                         listener:(FIRQuerySnapshotBlock)listener {
+  auto options = ListenOptions::FromIncludeMetadataChanges(includeMetadataChanges);
+  return [self addSnapshotListenerInternalWithOptions:options listener:listener];
+}
+
+- (id<FIRListenerRegistration>)addSnapshotListenerInternalWithOptions:(ListenOptions)internalOptions
+                                                             listener:
+                                                                 (FIRQuerySnapshotBlock)listener {
+  std::shared_ptr<Firestore> firestore = self.firestore.wrapped;
+  const core::Query &query = self.query;
+
+  // Convert from ViewSnapshots to QuerySnapshots.
+  auto view_listener = EventListener<ViewSnapshot>::Create(
+      [listener, firestore, query](StatusOr<ViewSnapshot> maybe_snapshot) {
+        if (!maybe_snapshot.status().ok()) {
+          listener(nil, MakeNSError(maybe_snapshot.status()));
+          return;
+        }
+
+        ViewSnapshot snapshot = std::move(maybe_snapshot).ValueOrDie();
+        SnapshotMetadata metadata(snapshot.has_pending_writes(), snapshot.from_cache());
+
+        listener([[FIRQuerySnapshot alloc] initWithFirestore:firestore
+                                               originalQuery:query
+                                                    snapshot:std::move(snapshot)
+                                                    metadata:std::move(metadata)],
+                 nil);
+      });
+
+  // Call the view_listener on the user Executor.
+  auto async_listener = AsyncEventListener<ViewSnapshot>::Create(
+      firestore->client()->user_executor(), std::move(view_listener));
+
+  std::shared_ptr<QueryListener> query_listener =
+      firestore->client()->ListenToQuery(query, internalOptions, async_listener);
+
+  return [[FSTListenerRegistration alloc]
+      initWithRegistration:absl::make_unique<QueryListenerRegistration>(firestore->client(),
+                                                                        std::move(async_listener),
+                                                                        std::move(query_listener))];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::Equal field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::Equal path:path.internalValue value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isNotEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::NotEqual field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isNotEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::NotEqual
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isLessThan:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::LessThan field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isLessThan:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::LessThan
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isLessThanOrEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::LessThanOrEqual field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isLessThanOrEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::LessThanOrEqual
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isGreaterThan:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::GreaterThan field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isGreaterThan:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::GreaterThan
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field arrayContains:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::ArrayContains field:field value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path arrayContains:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::ArrayContains
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field isGreaterThanOrEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::GreaterThanOrEqual
+                                 field:field
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path isGreaterThanOrEqualTo:(id)value {
+  return [self queryWithFilterOperator:Filter::Operator::GreaterThanOrEqual
+                                  path:path.internalValue
+                                 value:value];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field arrayContainsAny:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::ArrayContainsAny field:field value:values];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path arrayContainsAny:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::ArrayContainsAny
+                                  path:path.internalValue
+                                 value:values];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field in:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::In field:field value:values];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path in:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::In path:path.internalValue value:values];
+}
+
+- (FIRQuery *)queryWhereField:(NSString *)field notIn:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::NotIn field:field value:values];
+}
+
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path notIn:(NSArray<id> *)values {
+  return [self queryWithFilterOperator:Filter::Operator::NotIn
+                                  path:path.internalValue
+                                 value:values];
+}
+
+- (FIRQuery *)queryFilteredUsingComparisonPredicate:(NSPredicate *)predicate {
+  NSComparisonPredicate *comparison = (NSComparisonPredicate *)predicate;
+  if (comparison.comparisonPredicateModifier != NSDirectPredicateModifier) {
+    ThrowInvalidArgument("Invalid query. Predicate cannot have an aggregate modifier.");
+  }
+  NSString *path;
+  id value = nil;
+  if ([comparison.leftExpression expressionType] == NSKeyPathExpressionType &&
+      [comparison.rightExpression expressionType] == NSConstantValueExpressionType) {
+    path = comparison.leftExpression.keyPath;
+    value = comparison.rightExpression.constantValue;
+    switch (comparison.predicateOperatorType) {
+      case NSEqualToPredicateOperatorType:
+        return [self queryWhereField:path isEqualTo:value];
+      case NSLessThanPredicateOperatorType:
+        return [self queryWhereField:path isLessThan:value];
+      case NSLessThanOrEqualToPredicateOperatorType:
+        return [self queryWhereField:path isLessThanOrEqualTo:value];
+      case NSGreaterThanPredicateOperatorType:
+        return [self queryWhereField:path isGreaterThan:value];
+      case NSGreaterThanOrEqualToPredicateOperatorType:
+        return [self queryWhereField:path isGreaterThanOrEqualTo:value];
+      case NSNotEqualToPredicateOperatorType:
+        return [self queryWhereField:path isNotEqualTo:value];
+      case NSContainsPredicateOperatorType:
+        return [self queryWhereField:path arrayContains:value];
+      case NSInPredicateOperatorType:
+        return [self queryWhereField:path in:value];
+      default:;  // Fallback below to throw assertion.
+    }
+  } else if ([comparison.leftExpression expressionType] == NSConstantValueExpressionType &&
+             [comparison.rightExpression expressionType] == NSKeyPathExpressionType) {
+    path = comparison.rightExpression.keyPath;
+    value = comparison.leftExpression.constantValue;
+    switch (comparison.predicateOperatorType) {
+      case NSEqualToPredicateOperatorType:
+        return [self queryWhereField:path isEqualTo:value];
+      case NSLessThanPredicateOperatorType:
+        return [self queryWhereField:path isGreaterThan:value];
+      case NSLessThanOrEqualToPredicateOperatorType:
+        return [self queryWhereField:path isGreaterThanOrEqualTo:value];
+      case NSGreaterThanPredicateOperatorType:
+        return [self queryWhereField:path isLessThan:value];
+      case NSGreaterThanOrEqualToPredicateOperatorType:
+        return [self queryWhereField:path isLessThanOrEqualTo:value];
+      case NSNotEqualToPredicateOperatorType:
+        return [self queryWhereField:path isNotEqualTo:value];
+      case NSContainsPredicateOperatorType:
+        return [self queryWhereField:path arrayContains:value];
+      case NSInPredicateOperatorType:
+        return [self queryWhereField:path in:value];
+      default:;  // Fallback below to throw assertion.
+    }
+  } else {
+    ThrowInvalidArgument(
+        "Invalid query. Predicate comparisons must include a key path and a constant.");
+  }
+  // Fallback cases of unsupported comparison operator.
+  switch (comparison.predicateOperatorType) {
+    case NSCustomSelectorPredicateOperatorType:
+      ThrowInvalidArgument("Invalid query. Custom predicate filters are not supported.");
+      break;
+    default:
+      ThrowInvalidArgument("Invalid query. Operator type %s is not supported.",
+                           comparison.predicateOperatorType);
+  }
+}
+
+- (FIRQuery *)queryFilteredUsingCompoundPredicate:(NSPredicate *)predicate {
+  NSCompoundPredicate *compound = (NSCompoundPredicate *)predicate;
+  if (compound.compoundPredicateType != NSAndPredicateType || compound.subpredicates.count == 0) {
+    ThrowInvalidArgument("Invalid query. Only compound queries using AND are supported.");
+  }
+  FIRQuery *query = self;
+  for (NSPredicate *pred in compound.subpredicates) {
+    query = [query queryFilteredUsingPredicate:pred];
+  }
+  return query;
+}
+
+- (FIRQuery *)queryFilteredUsingPredicate:(NSPredicate *)predicate {
+  if ([predicate isKindOfClass:[NSComparisonPredicate class]]) {
+    return [self queryFilteredUsingComparisonPredicate:predicate];
+  } else if ([predicate isKindOfClass:[NSCompoundPredicate class]]) {
+    return [self queryFilteredUsingCompoundPredicate:predicate];
+  } else if ([predicate isKindOfClass:[[NSPredicate predicateWithBlock:^BOOL(id, NSDictionary *) {
+                          return true;
+                        }] class]]) {
+    ThrowInvalidArgument("Invalid query. Block-based predicates are not supported. Please use "
+                         "predicateWithFormat to create predicates instead.");
+  } else {
+    ThrowInvalidArgument("Invalid query. Expect comparison or compound of comparison predicate. "
+                         "Please use predicateWithFormat to create predicates.");
+  }
+}
+
+- (FIRQuery *)queryOrderedByField:(NSString *)field {
+  return [self queryOrderedByField:field descending:NO];
+}
+
+- (FIRQuery *)queryOrderedByFieldPath:(FIRFieldPath *)fieldPath {
+  return [self queryOrderedByFieldPath:fieldPath descending:NO];
+}
+
+- (FIRQuery *)queryOrderedByField:(NSString *)field descending:(BOOL)descending {
+  return [self queryOrderedByFieldPath:MakeFieldPath(field)
+                             direction:Direction::FromDescending(descending)];
+}
+
+- (FIRQuery *)queryOrderedByFieldPath:(FIRFieldPath *)fieldPath descending:(BOOL)descending {
+  return [self queryOrderedByFieldPath:fieldPath.internalValue
+                             direction:Direction::FromDescending(descending)];
+}
+
+- (FIRQuery *)queryOrderedByFieldPath:(model::FieldPath)fieldPath direction:(Direction)direction {
+  return Wrap(_query.OrderBy(std::move(fieldPath), direction));
+}
+
+- (FIRQuery *)queryLimitedTo:(NSInteger)limit {
+  return Wrap(_query.LimitToFirst(SaturatedLimitValue(limit)));
+}
+
+- (FIRQuery *)queryLimitedToLast:(NSInteger)limit {
+  return Wrap(_query.LimitToLast(SaturatedLimitValue(limit)));
+}
+
+- (FIRQuery *)queryStartingAtDocument:(FIRDocumentSnapshot *)snapshot {
+  Bound bound = [self boundFromSnapshot:snapshot isBefore:YES];
+  return Wrap(_query.StartAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryStartingAtValues:(NSArray *)fieldValues {
+  Bound bound = [self boundFromFieldValues:fieldValues isBefore:YES];
+  return Wrap(_query.StartAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryStartingAfterDocument:(FIRDocumentSnapshot *)snapshot {
+  Bound bound = [self boundFromSnapshot:snapshot isBefore:NO];
+  return Wrap(_query.StartAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryStartingAfterValues:(NSArray *)fieldValues {
+  Bound bound = [self boundFromFieldValues:fieldValues isBefore:NO];
+  return Wrap(_query.StartAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryEndingBeforeDocument:(FIRDocumentSnapshot *)snapshot {
+  Bound bound = [self boundFromSnapshot:snapshot isBefore:YES];
+  return Wrap(_query.EndAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryEndingBeforeValues:(NSArray *)fieldValues {
+  Bound bound = [self boundFromFieldValues:fieldValues isBefore:YES];
+  return Wrap(_query.EndAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryEndingAtDocument:(FIRDocumentSnapshot *)snapshot {
+  Bound bound = [self boundFromSnapshot:snapshot isBefore:NO];
+  return Wrap(_query.EndAt(std::move(bound)));
+}
+
+- (FIRQuery *)queryEndingAtValues:(NSArray *)fieldValues {
+  Bound bound = [self boundFromFieldValues:fieldValues isBefore:NO];
+  return Wrap(_query.EndAt(std::move(bound)));
+}
+
+#pragma mark - Private Methods
+
+- (Message<google_firestore_v1_Value>)parsedQueryValue:(id)value {
+  return [self.firestore.dataReader parsedQueryValue:value];
+}
+
+- (Message<google_firestore_v1_Value>)parsedQueryValue:(id)value allowArrays:(bool)allowArrays {
+  return [self.firestore.dataReader parsedQueryValue:value allowArrays:allowArrays];
+}
+
+- (QuerySnapshotListener)wrapQuerySnapshotBlock:(FIRQuerySnapshotBlock)block {
+  class Converter : public EventListener<QuerySnapshot> {
+   public:
+    explicit Converter(FIRQuerySnapshotBlock block) : block_(block) {
+    }
+
+    void OnEvent(StatusOr<QuerySnapshot> maybe_snapshot) override {
+      if (maybe_snapshot.ok()) {
+        FIRQuerySnapshot *result =
+            [[FIRQuerySnapshot alloc] initWithSnapshot:std::move(maybe_snapshot).ValueOrDie()];
+        block_(result, nil);
+      } else {
+        block_(nil, util::MakeNSError(maybe_snapshot.status()));
+      }
+    }
+
+   private:
+    FIRQuerySnapshotBlock block_;
+  };
+
+  return absl::make_unique<Converter>(block);
+}
+
+/** Private helper for all of the queryWhereField: methods. */
+- (FIRQuery *)queryWithFilterOperator:(Filter::Operator)filterOperator
+                                field:(NSString *)field
+                                value:(id)value {
+  return [self queryWithFilterOperator:filterOperator path:MakeFieldPath(field) value:value];
+}
+
+- (FIRQuery *)queryWithFilterOperator:(Filter::Operator)filterOperator
+                                 path:(const FieldPath &)fieldPath
+                                value:(id)value {
+  Message<google_firestore_v1_Value> fieldValue =
+      [self parsedQueryValue:value
+                 allowArrays:filterOperator == Filter::Operator::In ||
+                             filterOperator == Filter::Operator::NotIn];
+  auto describer = [value] { return MakeString(NSStringFromClass([value class])); };
+  return Wrap(_query.Filter(fieldPath, filterOperator, std::move(fieldValue), describer));
+}
+
+/**
+ * Create a Bound from a query given the document.
+ *
+ * Note that the Bound will always include the key of the document and the position will be
+ * unambiguous.
+ *
+ * Will throw if the document does not contain all fields of the order by of
+ * the query or if any of the fields in the order by are an uncommitted server
+ * timestamp.
+ */
+- (Bound)boundFromSnapshot:(FIRDocumentSnapshot *)snapshot isBefore:(BOOL)isBefore {
+  if (![snapshot exists]) {
+    ThrowInvalidArgument("Invalid query. You are trying to start or end a query using a document "
+                         "that doesn't exist.");
+  }
+  const Document &document = *snapshot.internalDocument;
+  const DatabaseId &databaseID = self.firestore.databaseID;
+  const OrderByList &order_bys = self.query.order_bys();
+
+  SharedMessage<google_firestore_v1_ArrayValue> components{{}};
+  components->values_count = CheckedSize(order_bys.size());
+  components->values = MakeArray<google_firestore_v1_Value>(components->values_count);
+
+  // Because people expect to continue/end a query at the exact document provided, we need to
+  // use the implicit sort order rather than the explicit sort order, because it's guaranteed to
+  // contain the document key. That way the position becomes unambiguous and the query
+  // continues/ends exactly at the provided document. Without the key (by using the explicit sort
+  // orders), multiple documents could match the position, yielding duplicate results.
+  for (size_t i = 0; i < order_bys.size(); ++i) {
+    if (order_bys[i].field() == FieldPath::KeyFieldPath()) {
+      components->values[i] = *RefValue(databaseID, document->key()).release();
+    } else {
+      absl::optional<google_firestore_v1_Value> value = document->field(order_bys[i].field());
+
+      if (value) {
+        if (IsServerTimestamp(*value)) {
+          ThrowInvalidArgument(
+              "Invalid query. You are trying to start or end a query using a document for which "
+              "the field '%s' is an uncommitted server timestamp. (Since the value of this field "
+              "is unknown, you cannot start/end a query with it.)",
+              order_bys[i].field().CanonicalString());
+        } else {
+          components->values[i] = *DeepClone(*value).release();
+        }
+      } else {
+        ThrowInvalidArgument(
+            "Invalid query. You are trying to start or end a query using a document for which the "
+            "field '%s' (used as the order by) does not exist.",
+            order_bys[i].field().CanonicalString());
+      }
+    }
+  }
+  return Bound::FromValue(std::move(components), isBefore);
+}
+
+/** Converts a list of field values to an Bound. */
+- (Bound)boundFromFieldValues:(NSArray<id> *)fieldValues isBefore:(BOOL)isBefore {
+  // Use explicit sort order because it has to match the query the user made
+  const OrderByList &explicitSortOrders = self.query.explicit_order_bys();
+  if (fieldValues.count > explicitSortOrders.size()) {
+    ThrowInvalidArgument("Invalid query. You are trying to start or end a query using more values "
+                         "than were specified in the order by.");
+  }
+
+  SharedMessage<google_firestore_v1_ArrayValue> components{{}};
+  components->values_count = CheckedSize(fieldValues.count);
+  components->values = MakeArray<google_firestore_v1_Value>(components->values_count);
+  for (NSUInteger idx = 0, max = fieldValues.count; idx < max; ++idx) {
+    id rawValue = fieldValues[idx];
+    const OrderBy &sortOrder = explicitSortOrders[idx];
+
+    Message<google_firestore_v1_Value> fieldValue{[self parsedQueryValue:rawValue]};
+    if (sortOrder.field().IsKeyFieldPath()) {
+      if (GetTypeOrder(*fieldValue) != TypeOrder::kString) {
+        ThrowInvalidArgument("Invalid query. Expected a string for the document ID.");
+      }
+
+      std::string documentID = MakeString(fieldValue->string_value);
+      if (!self.query.IsCollectionGroupQuery() && absl::StrContains(documentID, "/")) {
+        ThrowInvalidArgument("Invalid query. When querying a collection and ordering by document "
+                             "ID, you must pass a plain document ID, but '%s' contains a slash.",
+                             documentID);
+      }
+      ResourcePath path = self.query.path().Append(ResourcePath::FromString(documentID));
+      if (!DocumentKey::IsDocumentKey(path)) {
+        ThrowInvalidArgument("Invalid query. When querying a collection group and ordering by "
+                             "document ID, you must pass a value that results in a valid document "
+                             "path, but '%s' is not because it contains an odd number of segments.",
+                             path.CanonicalString());
+      }
+      DocumentKey key{path};
+      components->values[idx] = *RefValue(self.firestore.databaseID, key).release();
+    } else {
+      components->values[idx] = *fieldValue.release();
+    }
+  }
+
+  return Bound::FromValue(std::move(components), isBefore);
+}
+
+@end
+
+@implementation FIRQuery (Internal)
+
+- (const core::Query &)query {
+  return _query.query();
+}
+
+- (const api::Query &)apiQuery {
+  return _query;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot+Internal.h
new file mode 100644
index 0000000..104a679
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot+Internal.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRQuerySnapshot.h"
+
+#include <memory>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/core/core_fwd.h"
+
+@class FIRFirestore;
+@class FIRSnapshotMetadata;
+
+namespace api = firebase::firestore::api;
+namespace core = firebase::firestore::core;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Internal FIRQuerySnapshot API we don't want exposed in our public header files. */
+@interface FIRQuerySnapshot (/* Init */)
+
+- (instancetype)initWithSnapshot:(api::QuerySnapshot &&)snapshot NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithFirestore:(std::shared_ptr<api::Firestore>)firestore
+                    originalQuery:(core::Query)query
+                         snapshot:(core::ViewSnapshot &&)snapshot
+                         metadata:(api::SnapshotMetadata)metadata;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot.mm
new file mode 100644
index 0000000..18e2a58
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRQuerySnapshot.mm	
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utility>
+
+#import "Firestore/Source/API/FIRQuerySnapshot+Internal.h"
+
+#import "FIRSnapshotMetadata.h"
+#import "Firestore/Source/API/FIRDocumentChange+Internal.h"
+#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRQuery+Internal.h"
+#import "Firestore/Source/API/FIRSnapshotMetadata+Internal.h"
+
+#include "Firestore/core/src/api/query_core.h"
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/util/delayed_constructor.h"
+#include "Firestore/core/src/util/exception.h"
+
+using firebase::firestore::api::DocumentChange;
+using firebase::firestore::api::DocumentSnapshot;
+using firebase::firestore::api::Firestore;
+using firebase::firestore::api::QuerySnapshot;
+using firebase::firestore::api::SnapshotMetadata;
+using firebase::firestore::core::ViewSnapshot;
+using firebase::firestore::util::DelayedConstructor;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRQuerySnapshot {
+  DelayedConstructor<QuerySnapshot> _snapshot;
+
+  FIRSnapshotMetadata *_cached_metadata;
+
+  // Cached value of the documents property.
+  NSArray<FIRQueryDocumentSnapshot *> *_documents;
+
+  // Cached value of the documentChanges property.
+  NSArray<FIRDocumentChange *> *_documentChanges;
+  BOOL _documentChangesIncludeMetadataChanges;
+}
+
+- (instancetype)initWithSnapshot:(QuerySnapshot &&)snapshot {
+  if (self = [super init]) {
+    _snapshot.Init(std::move(snapshot));
+  }
+  return self;
+}
+
+- (instancetype)initWithFirestore:(std::shared_ptr<Firestore>)firestore
+                    originalQuery:(core::Query)query
+                         snapshot:(ViewSnapshot &&)snapshot
+                         metadata:(SnapshotMetadata)metadata {
+  QuerySnapshot wrapped(firestore, std::move(query), std::move(snapshot), std::move(metadata));
+  return [self initWithSnapshot:std::move(wrapped)];
+}
+
+// NSObject Methods
+- (BOOL)isEqual:(nullable id)other {
+  if (![other isKindOfClass:[FIRQuerySnapshot class]]) return NO;
+
+  FIRQuerySnapshot *otherSnapshot = other;
+  return *_snapshot == *(otherSnapshot->_snapshot);
+}
+
+- (NSUInteger)hash {
+  return _snapshot->Hash();
+}
+
+- (FIRQuery *)query {
+  return [[FIRQuery alloc] initWithQuery:_snapshot->query()];
+}
+
+- (FIRSnapshotMetadata *)metadata {
+  if (!_cached_metadata) {
+    _cached_metadata = [[FIRSnapshotMetadata alloc] initWithMetadata:_snapshot->metadata()];
+  }
+  return _cached_metadata;
+}
+
+@dynamic empty;
+
+- (BOOL)isEmpty {
+  return _snapshot->empty();
+}
+
+// This property is exposed as an NSInteger instead of an NSUInteger since (as of Xcode 8.1)
+// Swift bridges NSUInteger as UInt, and we want to avoid forcing Swift users to cast their ints
+// where we can. See cr/146959032 for additional context.
+- (NSInteger)count {
+  return static_cast<NSInteger>(_snapshot->size());
+}
+
+- (NSArray<FIRQueryDocumentSnapshot *> *)documents {
+  if (!_documents) {
+    NSMutableArray<FIRQueryDocumentSnapshot *> *result = [NSMutableArray array];
+    _snapshot->ForEachDocument([&result](DocumentSnapshot snapshot) {
+      [result addObject:[[FIRQueryDocumentSnapshot alloc] initWithSnapshot:std::move(snapshot)]];
+    });
+
+    _documents = result;
+  }
+  return _documents;
+}
+
+- (NSArray<FIRDocumentChange *> *)documentChanges {
+  return [self documentChangesWithIncludeMetadataChanges:NO];
+}
+
+- (NSArray<FIRDocumentChange *> *)documentChangesWithIncludeMetadataChanges:
+    (BOOL)includeMetadataChanges {
+  if (!_documentChanges || _documentChangesIncludeMetadataChanges != includeMetadataChanges) {
+    NSMutableArray *documentChanges = [NSMutableArray array];
+    _snapshot->ForEachChange(
+        static_cast<bool>(includeMetadataChanges), [&documentChanges](DocumentChange change) {
+          [documentChanges
+              addObject:[[FIRDocumentChange alloc] initWithDocumentChange:std::move(change)]];
+        });
+
+    _documentChanges = documentChanges;
+    _documentChangesIncludeMetadataChanges = includeMetadataChanges;
+  }
+  return _documentChanges;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata+Internal.h
new file mode 100644
index 0000000..e38971d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata+Internal.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRSnapshotMetadata.h"
+
+#import <Foundation/Foundation.h>
+
+#include "Firestore/core/src/api/snapshot_metadata.h"
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRSnapshotMetadata (/* Init */)
+
+- (instancetype)initWithMetadata:(api::SnapshotMetadata)metadata NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithPendingWrites:(bool)pendingWrites fromCache:(bool)fromCache;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata.mm
new file mode 100644
index 0000000..5bfd384
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRSnapshotMetadata.mm	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRSnapshotMetadata.h"
+
+#include <utility>
+
+#import "Firestore/Source/API/FIRSnapshotMetadata+Internal.h"
+
+#include "Firestore/core/src/api/snapshot_metadata.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FIRSnapshotMetadata {
+  api::SnapshotMetadata _metadata;
+}
+
+- (instancetype)initWithMetadata:(api::SnapshotMetadata)metadata {
+  if (self = [super init]) {
+    _metadata = std::move(metadata);
+  }
+  return self;
+}
+
+- (instancetype)initWithPendingWrites:(bool)pendingWrites fromCache:(bool)fromCache {
+  api::SnapshotMetadata wrapped(pendingWrites, fromCache);
+  return [self initWithMetadata:std::move(wrapped)];
+}
+
+// NSObject Methods
+- (BOOL)isEqual:(nullable id)other {
+  if (other == self) return YES;
+  if (![other isKindOfClass:[FIRSnapshotMetadata class]]) return NO;
+
+  FIRSnapshotMetadata *otherMetadata = other;
+  return _metadata == otherMetadata->_metadata;
+}
+
+- (NSUInteger)hash {
+  return _metadata.Hash();
+}
+
+- (BOOL)hasPendingWrites {
+  return _metadata.pending_writes();
+}
+
+- (BOOL)isFromCache {
+  return _metadata.from_cache();
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp+Internal.h
new file mode 100644
index 0000000..48e38b2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp+Internal.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRTimestamp.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Internal FIRTimestamp API we don't want exposed in our public header files. */
+@interface FIRTimestamp (Internal)
+
+/**
+ * Converts the given date to an ISO 8601 timestamp string, useful for rendering in JSON.
+ *
+ * ISO 8601 dates times in UTC look like this: "1912-04-14T23:40:00.000000000Z".
+ *
+ * @see http://www.ecma-international.org/ecma-262/6.0/#sec-date-time-string-format
+ */
+- (NSString *)ISO8601String;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp.m b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp.m
new file mode 100644
index 0000000..195a5cf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTimestamp.m	
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRTimestamp+Internal.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static const int kNanosPerSecond = 1000000000;
+
+@implementation FIRTimestamp (Internal)
+
+#pragma mark - Internal public methods
+
+- (NSString *)ISO8601String {
+  NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
+  formatter.dateFormat = @"yyyy-MM-dd'T'HH:mm:ss";
+  formatter.timeZone = [NSTimeZone timeZoneWithName:@"UTC"];
+  NSDate *secondsDate = [NSDate dateWithTimeIntervalSince1970:self.seconds];
+  NSString *secondsString = [formatter stringFromDate:secondsDate];
+  if (secondsString.length != 19) {
+    [NSException raise:@"Invalid ISO string" format:@"Invalid ISO string: %@", secondsString];
+  }
+
+  NSString *nanosString = [NSString stringWithFormat:@"%09d", self.nanoseconds];
+  return [NSString stringWithFormat:@"%@.%@Z", secondsString, nanosString];
+}
+
+@end
+
+@implementation FIRTimestamp
+
+#pragma mark - Constructors
+
++ (instancetype)timestampWithDate:(NSDate *)date {
+  double secondsDouble;
+  double fraction = modf(date.timeIntervalSince1970, &secondsDouble);
+  // GCP Timestamps always have non-negative nanos.
+  if (fraction < 0) {
+    fraction += 1.0;
+    secondsDouble -= 1.0;
+  }
+  int64_t seconds = (int64_t)secondsDouble;
+  int32_t nanos = (int32_t)(fraction * kNanosPerSecond);
+  return [[FIRTimestamp alloc] initWithSeconds:seconds nanoseconds:nanos];
+}
+
++ (instancetype)timestampWithSeconds:(int64_t)seconds nanoseconds:(int32_t)nanoseconds {
+  return [[FIRTimestamp alloc] initWithSeconds:seconds nanoseconds:nanoseconds];
+}
+
++ (instancetype)timestamp {
+  return [FIRTimestamp timestampWithDate:[NSDate date]];
+}
+
+- (instancetype)initWithSeconds:(int64_t)seconds nanoseconds:(int32_t)nanoseconds {
+  self = [super init];
+  if (self) {
+    if (nanoseconds < 0) {
+      [NSException raise:@"Invalid timestamp"
+                  format:@"Timestamp nanoseconds out of range: %d", nanoseconds];
+    }
+    if (nanoseconds >= 1e9) {
+      [NSException raise:@"Invalid timestamp"
+                  format:@"Timestamp nanoseconds out of range: %d", nanoseconds];
+    }
+    // Midnight at the beginning of 1/1/1 is the earliest timestamp supported.
+    if (seconds < -62135596800L) {
+      [NSException raise:@"Invalid timestamp"
+                  format:@"Timestamp seconds out of range: %lld", seconds];
+    }
+    // This will break in the year 10,000.
+    if (seconds >= 253402300800L) {
+      [NSException raise:@"Invalid timestamp"
+                  format:@"Timestamp seconds out of range: %lld", seconds];
+    }
+
+    _seconds = seconds;
+    _nanoseconds = nanoseconds;
+  }
+  return self;
+}
+
+#pragma mark - NSObject methods
+
+- (BOOL)isEqual:(id)object {
+  if (self == object) {
+    return YES;
+  }
+  if (![object isKindOfClass:[FIRTimestamp class]]) {
+    return NO;
+  }
+  return [self isEqualToTimestamp:(FIRTimestamp *)object];
+}
+
+- (NSUInteger)hash {
+  return (NSUInteger)((self.seconds >> 32) ^ self.seconds ^ self.nanoseconds);
+}
+
+- (NSString *)description {
+  return [NSString stringWithFormat:@"<FIRTimestamp: seconds=%lld nanoseconds=%d>", self.seconds,
+                                    self.nanoseconds];
+}
+
+/** Implements NSCopying without actually copying because timestamps are immutable. */
+- (id)copyWithZone:(__unused NSZone *_Nullable)zone {
+  return self;
+}
+
+#pragma mark - Public methods
+
+- (NSDate *)dateValue {
+  NSTimeInterval interval = (NSTimeInterval)self.seconds + ((NSTimeInterval)self.nanoseconds) / 1e9;
+  return [NSDate dateWithTimeIntervalSince1970:interval];
+}
+
+- (NSComparisonResult)compare:(FIRTimestamp *)other {
+  if (self.seconds < other.seconds) {
+    return NSOrderedAscending;
+  } else if (self.seconds > other.seconds) {
+    return NSOrderedDescending;
+  }
+
+  if (self.nanoseconds < other.nanoseconds) {
+    return NSOrderedAscending;
+  } else if (self.nanoseconds > other.nanoseconds) {
+    return NSOrderedDescending;
+  }
+  return NSOrderedSame;
+}
+
+#pragma mark - Private methods
+
+- (BOOL)isEqualToTimestamp:(FIRTimestamp *)other {
+  return [self compare:other] == NSOrderedSame;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction+Internal.h
new file mode 100644
index 0000000..93c7944
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction+Internal.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRTransaction.h"
+
+#include <memory>
+
+#include "Firestore/core/src/core/transaction.h"
+
+@class FIRFirestore;
+
+namespace core = firebase::firestore::core;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRTransaction (Internal)
+
++ (instancetype)transactionWithInternalTransaction:(std::shared_ptr<core::Transaction>)transaction
+                                         firestore:(FIRFirestore *)firestore;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction.mm
new file mode 100644
index 0000000..42b4203
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRTransaction.mm	
@@ -0,0 +1,185 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRTransaction.h"
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRTransaction+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::core::ParsedUpdateData;
+using firebase::firestore::core::Transaction;
+using firebase::firestore::model::Document;
+using firebase::firestore::util::MakeNSError;
+using firebase::firestore::util::StatusOr;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - FIRTransaction
+
+@interface FIRTransaction ()
+
+- (instancetype)initWithTransaction:(std::shared_ptr<Transaction>)transaction
+                          firestore:(FIRFirestore *)firestore NS_DESIGNATED_INITIALIZER;
+
+@property(nonatomic, strong, readonly) FIRFirestore *firestore;
+@end
+
+@implementation FIRTransaction (Internal)
+
++ (instancetype)transactionWithInternalTransaction:(std::shared_ptr<Transaction>)transaction
+                                         firestore:(FIRFirestore *)firestore {
+  return [[FIRTransaction alloc] initWithTransaction:std::move(transaction) firestore:firestore];
+}
+
+@end
+
+@implementation FIRTransaction {
+  std::shared_ptr<Transaction> _internalTransaction;
+}
+
+- (instancetype)initWithTransaction:(std::shared_ptr<Transaction>)transaction
+                          firestore:(FIRFirestore *)firestore {
+  self = [super init];
+  if (self) {
+    _internalTransaction = std::move(transaction);
+    _firestore = firestore;
+  }
+  return self;
+}
+
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document {
+  return [self setData:data forDocument:document merge:NO];
+}
+
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document
+                      merge:(BOOL)merge {
+  [self validateReference:document];
+  ParsedSetData parsed = merge ? [self.firestore.dataReader parsedMergeData:data fieldMask:nil]
+                               : [self.firestore.dataReader parsedSetData:data];
+  _internalTransaction->Set(document.key, std::move(parsed));
+  return self;
+}
+
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document
+                mergeFields:(NSArray<id> *)mergeFields {
+  [self validateReference:document];
+  ParsedSetData parsed = [self.firestore.dataReader parsedMergeData:data fieldMask:mergeFields];
+  _internalTransaction->Set(document.key, std::move(parsed));
+  return self;
+}
+
+- (FIRTransaction *)updateData:(NSDictionary<id, id> *)fields
+                   forDocument:(FIRDocumentReference *)document {
+  [self validateReference:document];
+  ParsedUpdateData parsed = [self.firestore.dataReader parsedUpdateData:fields];
+  _internalTransaction->Update(document.key, std::move(parsed));
+  return self;
+}
+
+- (FIRTransaction *)deleteDocument:(FIRDocumentReference *)document {
+  [self validateReference:document];
+  _internalTransaction->Delete(document.key);
+  return self;
+}
+
+- (void)getDocument:(FIRDocumentReference *)document
+         completion:(void (^)(FIRDocumentSnapshot *_Nullable document,
+                              NSError *_Nullable error))completion {
+  [self validateReference:document];
+  _internalTransaction->Lookup(
+      {document.key},
+      [self, document, completion](const StatusOr<std::vector<Document>> &maybe_documents) {
+        if (!maybe_documents.ok()) {
+          completion(nil, MakeNSError(maybe_documents.status()));
+          return;
+        }
+
+        const auto &documents = maybe_documents.ValueOrDie();
+        HARD_ASSERT(documents.size() == 1, "Mismatch in docs returned from document lookup.");
+        const Document &internalDoc = documents.front();
+        if (internalDoc->is_found_document()) {
+          FIRDocumentSnapshot *doc =
+              [[FIRDocumentSnapshot alloc] initWithFirestore:self.firestore
+                                                 documentKey:internalDoc->key()
+                                                    document:internalDoc
+                                                   fromCache:false
+                                            hasPendingWrites:false];
+          completion(doc, nil);
+        } else if (internalDoc->is_no_document()) {
+          FIRDocumentSnapshot *doc = [[FIRDocumentSnapshot alloc] initWithFirestore:self.firestore
+                                                                        documentKey:document.key
+                                                                           document:absl::nullopt
+                                                                          fromCache:false
+                                                                   hasPendingWrites:false];
+          completion(doc, nil);
+        } else {
+          HARD_FAIL("BatchGetDocumentsRequest returned unexpected document type: %s",
+                    internalDoc.ToString());
+        }
+      });
+}
+
+- (FIRDocumentSnapshot *_Nullable)getDocument:(FIRDocumentReference *)document
+                                        error:(NSError *__autoreleasing *)error {
+  [self validateReference:document];
+  dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+  __block FIRDocumentSnapshot *result;
+  // We have to explicitly assign the innerError into a local to cause it to retain correctly.
+  __block NSError *outerError = nil;
+  [self getDocument:document
+         completion:^(FIRDocumentSnapshot *_Nullable snapshot, NSError *_Nullable innerError) {
+           result = snapshot;
+           outerError = innerError;
+           dispatch_semaphore_signal(semaphore);
+         }];
+  dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+  if (error) {
+    *error = outerError;
+  }
+  return result;
+}
+
+- (void)validateReference:(FIRDocumentReference *)reference {
+  if (reference.firestore != self.firestore) {
+    ThrowInvalidArgument("Provided document reference is from a different Cloud Firestore "
+                         "instance.");
+  }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch+Internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch+Internal.h
new file mode 100644
index 0000000..54329f5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch+Internal.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRWriteBatch.h"
+
+#import <Foundation/Foundation.h>
+
+#include "Firestore/core/src/api/write_batch.h"
+
+@class FSTUserDataReader;
+
+namespace api = firebase::firestore::api;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FIRWriteBatch (Internal)
+
++ (instancetype)writeBatchWithDataReader:(FSTUserDataReader *)dataReader
+                              writeBatch:(api::WriteBatch &&)writeBatch;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch.mm
new file mode 100644
index 0000000..048f180
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FIRWriteBatch.mm	
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FIRWriteBatch+Internal.h"
+
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include "Firestore/core/src/api/write_batch.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/util/delayed_constructor.h"
+#include "Firestore/core/src/util/error_apple.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::core::ParsedUpdateData;
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - FIRWriteBatch
+
+@interface FIRWriteBatch ()
+
+- (instancetype)initWithDataReader:(FSTUserDataReader *)dataReader
+                        writeBatch:(api::WriteBatch &&)writeBatch NS_DESIGNATED_INITIALIZER;
+
+@property(nonatomic, strong, readonly) FSTUserDataReader *dataReader;
+
+@end
+
+@implementation FIRWriteBatch (Internal)
+
++ (instancetype)writeBatchWithDataReader:(FSTUserDataReader *)dataReader
+                              writeBatch:(api::WriteBatch &&)writeBatch {
+  return [[FIRWriteBatch alloc] initWithDataReader:dataReader writeBatch:std::move(writeBatch)];
+}
+
+@end
+
+@implementation FIRWriteBatch {
+  util::DelayedConstructor<api::WriteBatch> _writeBatch;
+}
+
+- (instancetype)initWithDataReader:(FSTUserDataReader *)dataReader
+                        writeBatch:(api::WriteBatch &&)writeBatch {
+  self = [super init];
+  if (self) {
+    _dataReader = dataReader;
+    _writeBatch.Init(std::move(writeBatch));
+  }
+  return self;
+}
+
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document {
+  return [self setData:data forDocument:document merge:NO];
+}
+
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document
+                     merge:(BOOL)merge {
+  ParsedSetData parsed = merge ? [self.dataReader parsedMergeData:data fieldMask:nil]
+                               : [self.dataReader parsedSetData:data];
+  _writeBatch->SetData(document.internalReference, std::move(parsed));
+
+  return self;
+}
+
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document
+               mergeFields:(NSArray<id> *)mergeFields {
+  ParsedSetData parsed = [self.dataReader parsedMergeData:data fieldMask:mergeFields];
+  _writeBatch->SetData(document.internalReference, std::move(parsed));
+
+  return self;
+}
+
+- (FIRWriteBatch *)updateData:(NSDictionary<id, id> *)fields
+                  forDocument:(FIRDocumentReference *)document {
+  ParsedUpdateData parsed = [self.dataReader parsedUpdateData:fields];
+  _writeBatch->UpdateData(document.internalReference, std::move(parsed));
+
+  return self;
+}
+
+- (FIRWriteBatch *)deleteDocument:(FIRDocumentReference *)document {
+  _writeBatch->DeleteData(document.internalReference);
+
+  return self;
+}
+
+- (void)commit {
+  [self commitWithCompletion:nil];
+}
+
+- (void)commitWithCompletion:(nullable void (^)(NSError *_Nullable error))completion {
+  _writeBatch->Commit(util::MakeCallback(completion));
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.h
new file mode 100644
index 0000000..74504ca
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+
+@class FIRApp;
+@class FIRFirestore;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Provides and creates instances of Firestore based on a specific key. Used in the interop
+/// registration process to keep track of instances for `FIRApp` instances.
+@protocol FSTFirestoreMultiDBProvider
+
+/// Cached instances of Firestore objects.
+@property(nonatomic, strong) NSMutableDictionary<NSString *, FIRFirestore *> *instances;
+
+/// Default method for retrieving a Firestore instance, or creating one if it doesn't exist.
+- (FIRFirestore *)firestoreForDatabase:(NSString *)database;
+
+@end
+
+/// A concrete implementation for FSTInstanceProvider to create Firestore instances and register
+/// with Core's component system.
+@interface FSTFirestoreComponent
+    : NSObject <FSTFirestoreInstanceRegistry, FSTFirestoreMultiDBProvider>
+
+/// The FIRApp that instances will be set up with.
+@property(nonatomic, weak, readonly) FIRApp *app;
+
+/// Cached instances of Firestore objects.
+@property(nonatomic, strong) NSMutableDictionary<NSString *, FIRFirestore *> *instances;
+
+/// Default method for retrieving a Firestore instance, or creating one if it doesn't exist.
+- (FIRFirestore *)firestoreForDatabase:(NSString *)database;
+
+- (void)removeInstanceWithDatabase:(NSString *)database;
+
+/// Default initializer.
+- (instancetype)initWithApp:(FIRApp *)app NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.mm
new file mode 100644
index 0000000..faaf25f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTFirestoreComponent.mm	
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FSTFirestoreComponent.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Interop/Auth/Public/FIRAuthInterop.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_version.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/auth/firebase_credentials_provider_apple.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider_apple.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/memory/memory.h"
+
+namespace util = firebase::firestore::util;
+using firebase::firestore::auth::CredentialsProvider;
+using firebase::firestore::auth::FirebaseCredentialsProvider;
+using firebase::firestore::remote::FirebaseMetadataProviderApple;
+using firebase::firestore::util::AsyncQueue;
+using firebase::firestore::util::Executor;
+using firebase::firestore::util::ThrowInvalidArgument;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FSTFirestoreComponent () <FIRComponentLifecycleMaintainer, FIRLibrary>
+@end
+
+@implementation FSTFirestoreComponent
+
+// Explicitly @synthesize because instances is part of the FSTInstanceProvider protocol.
+@synthesize instances = _instances;
+
+#pragma mark - Initialization
+
+- (instancetype)initWithApp:(FIRApp *)app {
+  self = [super init];
+  if (self) {
+    _instances = [[NSMutableDictionary alloc] init];
+
+    HARD_ASSERT(app, "Cannot initialize Firestore with a nil FIRApp.");
+    _app = app;
+  }
+  return self;
+}
+
+- (NSString *)keyForDatabase:(NSString *)database {
+  return [NSString stringWithFormat:@"%@|%@", self.app.name, database];
+}
+
+#pragma mark - FSTInstanceProvider Conformance
+
+- (FIRFirestore *)firestoreForDatabase:(NSString *)database {
+  if (!database) {
+    ThrowInvalidArgument("Database identifier may not be nil.");
+  }
+
+  NSString *projectID = self.app.options.projectID;
+  if (!projectID) {
+    ThrowInvalidArgument("FIROptions.projectID must be set to a valid project ID.");
+  }
+
+  NSString *key = [self keyForDatabase:database];
+
+  // Get the component from the container.
+  @synchronized(self.instances) {
+    FIRFirestore *firestore = _instances[key];
+    if (!firestore) {
+      std::string queue_name{"com.google.firebase.firestore"};
+      if (!self.app.isDefaultApp) {
+        absl::StrAppend(&queue_name, ".", util::MakeString(self.app.name));
+      }
+
+      auto executor = Executor::CreateSerial(queue_name.c_str());
+      auto workerQueue = AsyncQueue::Create(std::move(executor));
+
+      id<FIRAuthInterop> auth = FIR_COMPONENT(FIRAuthInterop, self.app.container);
+      auto credentialsProvider = std::make_shared<FirebaseCredentialsProvider>(self.app, auth);
+
+      auto firebaseMetadataProvider = absl::make_unique<FirebaseMetadataProviderApple>(self.app);
+
+      model::DatabaseId databaseID{util::MakeString(projectID), util::MakeString(database)};
+      std::string persistenceKey = util::MakeString(self.app.name);
+      firestore = [[FIRFirestore alloc] initWithDatabaseID:std::move(databaseID)
+                                            persistenceKey:std::move(persistenceKey)
+                                       credentialsProvider:std::move(credentialsProvider)
+                                               workerQueue:std::move(workerQueue)
+                                  firebaseMetadataProvider:std::move(firebaseMetadataProvider)
+                                               firebaseApp:self.app
+                                          instanceRegistry:self];
+      _instances[key] = firestore;
+    }
+    return firestore;
+  }
+}
+
+- (void)removeInstanceWithDatabase:(NSString *)database {
+  @synchronized(_instances) {
+    NSString *key = [self keyForDatabase:database];
+    [_instances removeObjectForKey:key];
+  }
+}
+
+#pragma mark - FIRComponentLifecycleMaintainer
+
+- (void)appWillBeDeleted:(__unused FIRApp *)app {
+  NSDictionary<NSString *, FIRFirestore *> *instances;
+  @synchronized(_instances) {
+    instances = [_instances copy];
+    [_instances removeAllObjects];
+  }
+  for (NSString *key in instances) {
+    [instances[key] terminateInternalWithCompletion:nil];
+  }
+}
+
+#pragma mark - Object Lifecycle
+
++ (void)load {
+  [FIRApp registerInternalLibrary:(Class<FIRLibrary>)self withName:@"fire-fst"];
+}
+
+#pragma mark - Interoperability
+
++ (NSArray<FIRComponent *> *)componentsToRegister {
+  FIRDependency *auth = [FIRDependency dependencyWithProtocol:@protocol(FIRAuthInterop)
+                                                   isRequired:NO];
+  FIRComponent *firestoreProvider = [FIRComponent
+      componentWithProtocol:@protocol(FSTFirestoreMultiDBProvider)
+        instantiationTiming:FIRInstantiationTimingLazy
+               dependencies:@[ auth ]
+              creationBlock:^id _Nullable(FIRComponentContainer *container, BOOL *isCacheable) {
+                FSTFirestoreComponent *multiDBComponent =
+                    [[FSTFirestoreComponent alloc] initWithApp:container.app];
+                *isCacheable = YES;
+                return multiDBComponent;
+              }];
+  return @[ firestoreProvider ];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.h
new file mode 100644
index 0000000..f348ff7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.h	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+@class FIRTimestamp;
+
+namespace core = firebase::firestore::core;
+namespace model = firebase::firestore::model;
+namespace nanopb = firebase::firestore::nanopb;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * An internal representation of FIRDocumentReference, representing a key in a specific database.
+ * This is necessary because keys assume a database from context (usually the current one).
+ * FSTDocumentKeyReference binds a key to a specific databaseID.
+ *
+ * TODO(b/64160088): Make DocumentKey aware of the specific databaseID it is tied to.
+ */
+@interface FSTDocumentKeyReference : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+
+- (instancetype)initWithKey:(model::DocumentKey)key
+                 databaseID:(model::DatabaseId)databaseID NS_DESIGNATED_INITIALIZER;
+
+- (const model::DocumentKey &)key;
+
+@property(nonatomic, assign, readonly) const model::DatabaseId &databaseID;
+
+@end
+
+/**
+ * An interface that allows arbitrary pre-converting of user data.
+ *
+ * Returns the converted value (can return back the input to act as a no-op).
+ */
+typedef id _Nullable (^FSTPreConverterBlock)(id _Nullable);
+
+/**
+ * Helper for parsing raw user input (provided via the API) into internal model classes.
+ */
+@interface FSTUserDataReader : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+- (instancetype)initWithDatabaseID:(model::DatabaseId)databaseID
+                      preConverter:(FSTPreConverterBlock)preConverter NS_DESIGNATED_INITIALIZER;
+
+/** Parse document data from a non-merge setData call.*/
+- (core::ParsedSetData)parsedSetData:(id)input;
+
+/** Parse document data from a setData call with `merge:YES`. */
+- (core::ParsedSetData)parsedMergeData:(id)input fieldMask:(nullable NSArray<id> *)fieldMask;
+
+/** Parse update data from an updateData call. */
+- (core::ParsedUpdateData)parsedUpdateData:(id)input;
+
+/** Parse a "query value" (e.g. value in a where filter or a value in a cursor bound). */
+- (nanopb::Message<firebase::firestore::google_firestore_v1_Value>)parsedQueryValue:(id)input;
+
+/**
+ * Parse a "query value" (e.g. value in a where filter or a value in a cursor bound).
+ *
+ * @param allowArrays Whether the query value is an array that may directly contain additional
+ * arrays (e.g.) the operand of an `in` query).
+ */
+- (nanopb::Message<firebase::firestore::google_firestore_v1_Value>)parsedQueryValue:(id)input
+                                                                        allowArrays:
+                                                                            (bool)allowArrays;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.mm
new file mode 100644
index 0000000..264304a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataReader.mm	
@@ -0,0 +1,627 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "Firestore/Source/API/FSTUserDataReader.h"
+
+#include <memory>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#import "FIRGeoPoint.h"
+#import "FIRTimestamp.h"
+
+#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#import "Firestore/Source/API/FIRFieldPath+Internal.h"
+#import "Firestore/Source/API/FIRFieldValue+Internal.h"
+#import "Firestore/Source/API/FIRFirestore+Internal.h"
+#import "Firestore/Source/API/FIRGeoPoint+Internal.h"
+#import "Firestore/Source/API/converters.h"
+#import "Firestore/core/include/firebase/firestore/geo_point.h"
+
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_mask.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/field_transform.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "Firestore/core/src/model/precondition.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/transform_operation.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/timestamp_internal.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/read_context.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+#include "absl/types/optional.h"
+
+namespace util = firebase::firestore::util;
+namespace nanopb = firebase::firestore::nanopb;
+using firebase::Timestamp;
+using firebase::TimestampInternal;
+using firebase::firestore::GeoPoint;
+using firebase::firestore::core::ParseAccumulator;
+using firebase::firestore::core::ParseContext;
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::core::ParsedUpdateData;
+using firebase::firestore::core::UserDataSource;
+using firebase::firestore::model::ArrayTransform;
+using firebase::firestore::model::DatabaseId;
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::FieldMask;
+using firebase::firestore::model::FieldPath;
+using firebase::firestore::model::FieldTransform;
+using firebase::firestore::model::NullValue;
+using firebase::firestore::model::NumericIncrementTransform;
+using firebase::firestore::model::ObjectValue;
+using firebase::firestore::model::ResourcePath;
+using firebase::firestore::model::ServerTimestampTransform;
+using firebase::firestore::model::TransformOperation;
+using firebase::firestore::nanopb::CheckedSize;
+using firebase::firestore::nanopb::Message;
+using firebase::firestore::remote::Serializer;
+using firebase::firestore::util::ThrowInvalidArgument;
+using firebase::firestore::util::ReadContext;
+using firebase::firestore::google_firestore_v1_Value;
+using firebase::firestore::google_firestore_v1_MapValue;
+using firebase::firestore::google_firestore_v1_ArrayValue;
+using firebase::firestore::google_protobuf_NullValue_NULL_VALUE;
+using firebase::firestore::google_firestore_v1_MapValue_FieldsEntry;
+using firebase::firestore::google_type_LatLng;
+using firebase::firestore::google_protobuf_Timestamp;
+using nanopb::StringReader;
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - FSTDocumentKeyReference
+
+@implementation FSTDocumentKeyReference {
+  DocumentKey _key;
+  DatabaseId _databaseID;
+}
+
+- (instancetype)initWithKey:(DocumentKey)key databaseID:(DatabaseId)databaseID {
+  self = [super init];
+  if (self) {
+    _key = std::move(key);
+    _databaseID = std::move(databaseID);
+  }
+  return self;
+}
+
+- (const model::DocumentKey &)key {
+  return _key;
+}
+
+- (const model::DatabaseId &)databaseID {
+  return _databaseID;
+}
+
+@end
+
+#pragma mark - FSTUserDataReader
+
+@interface FSTUserDataReader ()
+@property(strong, nonatomic, readonly) FSTPreConverterBlock preConverter;
+@end
+
+@implementation FSTUserDataReader {
+  DatabaseId _databaseID;
+}
+
+- (instancetype)initWithDatabaseID:(DatabaseId)databaseID
+                      preConverter:(FSTPreConverterBlock)preConverter {
+  self = [super init];
+  if (self) {
+    _databaseID = std::move(databaseID);
+    _preConverter = preConverter;
+  }
+  return self;
+}
+
+- (ParsedSetData)parsedSetData:(id)input {
+  // NOTE: The public API is typed as NSDictionary but we type 'input' as 'id' since we can't trust
+  // Obj-C to verify the type for us.
+  if (![input isKindOfClass:[NSDictionary class]]) {
+    ThrowInvalidArgument("Data to be written must be an NSDictionary.");
+  }
+
+  ParseAccumulator accumulator{UserDataSource::Set};
+  auto updateData = [self parseData:input context:accumulator.RootContext()];
+  HARD_ASSERT(updateData.has_value(), "Parsed data should not be nil.");
+
+  return std::move(accumulator).SetData(ObjectValue{std::move(*updateData)});
+}
+
+- (ParsedSetData)parsedMergeData:(id)input fieldMask:(nullable NSArray<id> *)fieldMask {
+  // NOTE: The public API is typed as NSDictionary but we type 'input' as 'id' since we can't trust
+  // Obj-C to verify the type for us.
+  if (![input isKindOfClass:[NSDictionary class]]) {
+    ThrowInvalidArgument("Data to be written must be an NSDictionary.");
+  }
+
+  ParseAccumulator accumulator{UserDataSource::MergeSet};
+
+  auto updateData = [self parseData:input context:accumulator.RootContext()];
+  HARD_ASSERT(updateData.has_value(), "Parsed data should not be nil.");
+
+  ObjectValue updateObject{std::move(*updateData)};
+
+  if (fieldMask) {
+    std::set<FieldPath> validatedFieldPaths;
+    for (id fieldPath in fieldMask) {
+      FieldPath path;
+
+      if ([fieldPath isKindOfClass:[NSString class]]) {
+        path = FieldPath::FromDotSeparatedString(util::MakeString(fieldPath));
+      } else if ([fieldPath isKindOfClass:[FIRFieldPath class]]) {
+        path = static_cast<FIRFieldPath *>(fieldPath).internalValue;
+      } else {
+        ThrowInvalidArgument("All elements in mergeFields: must be NSStrings or FIRFieldPaths.");
+      }
+
+      // Verify that all elements specified in the field mask are part of the parsed context.
+      if (!accumulator.Contains(path)) {
+        ThrowInvalidArgument(
+            "Field '%s' is specified in your field mask but missing from your input data.",
+            path.CanonicalString());
+      }
+
+      validatedFieldPaths.insert(path);
+    }
+
+    return std::move(accumulator)
+        .MergeData(std::move(updateObject), FieldMask{std::move(validatedFieldPaths)});
+
+  } else {
+    return std::move(accumulator).MergeData(std::move(updateObject));
+  }
+}
+
+- (ParsedUpdateData)parsedUpdateData:(id)input {
+  // NOTE: The public API is typed as NSDictionary but we type 'input' as 'id' since we can't trust
+  // Obj-C to verify the type for us.
+  if (![input isKindOfClass:[NSDictionary class]]) {
+    ThrowInvalidArgument("Data to be written must be an NSDictionary.");
+  }
+
+  NSDictionary *dict = input;
+
+  ParseAccumulator accumulator{UserDataSource::Update};
+  __block ParseContext context = accumulator.RootContext();
+  __block ObjectValue updateData;
+
+  [dict enumerateKeysAndObjectsUsingBlock:^(id key, id value, BOOL *) {
+    FieldPath path;
+
+    if ([key isKindOfClass:[NSString class]]) {
+      path = FieldPath::FromDotSeparatedString(util::MakeString(key));
+    } else if ([key isKindOfClass:[FIRFieldPath class]]) {
+      path = ((FIRFieldPath *)key).internalValue;
+    } else {
+      ThrowInvalidArgument("Dictionary keys in updateData: must be NSStrings or FIRFieldPaths.");
+    }
+
+    value = self.preConverter(value);
+    if ([value isKindOfClass:[FSTDeleteFieldValue class]]) {
+      // Add it to the field mask, but don't add anything to updateData.
+      context.AddToFieldMask(std::move(path));
+    } else {
+      auto parsedValue = [self parseData:value context:context.ChildContext(path)];
+      if (parsedValue) {
+        context.AddToFieldMask(path);
+        updateData.Set(path, std::move(*parsedValue));
+      }
+    }
+  }];
+
+  return std::move(accumulator).UpdateData(std::move(updateData));
+}
+
+- (Message<google_firestore_v1_Value>)parsedQueryValue:(id)input {
+  return [self parsedQueryValue:input allowArrays:false];
+}
+
+- (Message<google_firestore_v1_Value>)parsedQueryValue:(id)input allowArrays:(bool)allowArrays {
+  ParseAccumulator accumulator{allowArrays ? UserDataSource::ArrayArgument
+                                           : UserDataSource::Argument};
+
+  auto parsed = [self parseData:input context:accumulator.RootContext()];
+  HARD_ASSERT(parsed, "Parsed data should not be nil.");
+  HARD_ASSERT(accumulator.field_transforms().empty(),
+              "Field transforms should have been disallowed.");
+  return std::move(*parsed);
+}
+
+/**
+ * Internal helper for parsing user data.
+ *
+ * @param input Data to be parsed.
+ * @param context A context object representing the current path being parsed, the source of the
+ *   data being parsed, etc.
+ *
+ * @return The parsed value, or nil if the value was a FieldValue sentinel that should not be
+ *   included in the resulting parsed data.
+ */
+- (absl::optional<Message<google_firestore_v1_Value>>)parseData:(id)input
+                                                        context:(ParseContext &&)context {
+  input = self.preConverter(input);
+  if ([input isKindOfClass:[NSDictionary class]]) {
+    return [self parseDictionary:(NSDictionary *)input context:std::move(context)];
+
+  } else if ([input isKindOfClass:[FIRFieldValue class]]) {
+    // FieldValues usually parse into transforms (except FieldValue.delete()) in which case we
+    // do not want to include this field in our parsed data (as doing so will overwrite the field
+    // directly prior to the transform trying to transform it). So we don't call appendToFieldMask
+    // and we return nil as our parsing result.
+    [self parseSentinelFieldValue:(FIRFieldValue *)input context:std::move(context)];
+    return absl::nullopt;
+
+  } else {
+    // If context path is unset we are already inside an array and we don't support field mask paths
+    // more granular than the top-level array.
+    if (context.path()) {
+      context.AddToFieldMask(*context.path());
+    }
+
+    if ([input isKindOfClass:[NSArray class]]) {
+      // TODO(b/34871131): Include the path containing the array in the error message.
+      // In the case of IN queries, the parsed data is an array (representing the set of values to
+      // be included for the IN query) that may directly contain additional arrays (each
+      // representing an individual field value), so we disable this validation.
+      if (context.array_element() && context.data_source() != UserDataSource::ArrayArgument) {
+        ThrowInvalidArgument("Nested arrays are not supported");
+      }
+      return [self parseArray:(NSArray *)input context:std::move(context)];
+    } else {
+      return [self parseScalarValue:input context:std::move(context)];
+    }
+  }
+}
+
+- (Message<google_firestore_v1_Value>)parseDictionary:(NSDictionary<NSString *, id> *)dict
+                                              context:(ParseContext &&)context {
+  __block Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_map_value_tag;
+  result->map_value = {};
+
+  if (dict.count == 0) {
+    const FieldPath *path = context.path();
+    if (path && !path->empty()) {
+      context.AddToFieldMask(*path);
+    }
+  } else {
+    // Compute the final size of the fields array, which contains an entry for
+    // all fields that are not FieldValue sentinels
+    __block pb_size_t count = 0;
+    [dict enumerateKeysAndObjectsUsingBlock:^(NSString *, id value, BOOL *) {
+      if (![value isKindOfClass:[FIRFieldValue class]]) {
+        ++count;
+      }
+    }];
+
+    result->map_value.fields_count = count;
+    result->map_value.fields = nanopb::MakeArray<google_firestore_v1_MapValue_FieldsEntry>(count);
+
+    __block pb_size_t index = 0;
+    [dict enumerateKeysAndObjectsUsingBlock:^(NSString *key, id value, BOOL *) {
+      auto parsedValue = [self parseData:value context:context.ChildContext(util::MakeString(key))];
+      if (parsedValue) {
+        result->map_value.fields[index].key = nanopb::MakeBytesArray(util::MakeString(key));
+        result->map_value.fields[index].value = *parsedValue->release();
+        ++index;
+      }
+    }];
+  }
+
+  return std::move(result);
+}
+
+- (Message<google_firestore_v1_Value>)parseArray:(NSArray<id> *)array
+                                         context:(ParseContext &&)context {
+  __block Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_array_value_tag;
+  result->array_value.values_count = CheckedSize([array count]);
+  result->array_value.values =
+      nanopb::MakeArray<google_firestore_v1_Value>(result->array_value.values_count);
+
+  [array enumerateObjectsUsingBlock:^(id entry, NSUInteger idx, BOOL *) {
+    auto parsedEntry = [self parseData:entry context:context.ChildContext(idx)];
+    if (!parsedEntry) {
+      // Just include nulls in the array for fields being replaced with a sentinel.
+      parsedEntry = NullValue();
+    }
+    result->array_value.values[idx] = *parsedEntry->release();
+  }];
+
+  return std::move(result);
+}
+
+/**
+ * "Parses" the provided FIRFieldValue, adding any necessary transforms to
+ * context.fieldTransforms.
+ */
+- (void)parseSentinelFieldValue:(FIRFieldValue *)fieldValue context:(ParseContext &&)context {
+  // Sentinels are only supported with writes, and not within arrays.
+  if (!context.write()) {
+    ThrowInvalidArgument("%s can only be used with updateData() and setData()%s",
+                         fieldValue.methodName, context.FieldDescription());
+  }
+  if (!context.path()) {
+    ThrowInvalidArgument("%s is not currently supported inside arrays", fieldValue.methodName);
+  }
+
+  if ([fieldValue isKindOfClass:[FSTDeleteFieldValue class]]) {
+    if (context.data_source() == UserDataSource::MergeSet) {
+      // No transform to add for a delete, but we need to add it to our fieldMask so it gets
+      // deleted.
+      context.AddToFieldMask(*context.path());
+
+    } else if (context.data_source() == UserDataSource::Update) {
+      HARD_ASSERT(!context.path()->empty(),
+                  "FieldValue.delete() at the top level should have already been handled.");
+      ThrowInvalidArgument("FieldValue.delete() can only appear at the top level of your "
+                           "update data%s",
+                           context.FieldDescription());
+    } else {
+      // We shouldn't encounter delete sentinels for queries or non-merge setData calls.
+      ThrowInvalidArgument(
+          "FieldValue.delete() can only be used with updateData() and setData() with merge:true%s",
+          context.FieldDescription());
+    }
+
+  } else if ([fieldValue isKindOfClass:[FSTServerTimestampFieldValue class]]) {
+    context.AddToFieldTransforms(*context.path(), ServerTimestampTransform());
+
+  } else if ([fieldValue isKindOfClass:[FSTArrayUnionFieldValue class]]) {
+    auto parsedElements =
+        [self parseArrayTransformElements:((FSTArrayUnionFieldValue *)fieldValue).elements];
+    ArrayTransform arrayUnion(TransformOperation::Type::ArrayUnion, std::move(parsedElements));
+    context.AddToFieldTransforms(*context.path(), std::move(arrayUnion));
+
+  } else if ([fieldValue isKindOfClass:[FSTArrayRemoveFieldValue class]]) {
+    auto parsedElements =
+        [self parseArrayTransformElements:((FSTArrayRemoveFieldValue *)fieldValue).elements];
+    ArrayTransform arrayRemove(TransformOperation::Type::ArrayRemove, std::move(parsedElements));
+    context.AddToFieldTransforms(*context.path(), std::move(arrayRemove));
+
+  } else if ([fieldValue isKindOfClass:[FSTNumericIncrementFieldValue class]]) {
+    auto *numericIncrementFieldValue = (FSTNumericIncrementFieldValue *)fieldValue;
+    auto operand = [self parsedQueryValue:numericIncrementFieldValue.operand];
+    NumericIncrementTransform numeric_increment(std::move(operand));
+
+    context.AddToFieldTransforms(*context.path(), std::move(numeric_increment));
+
+  } else {
+    HARD_FAIL("Unknown FIRFieldValue type: %s", NSStringFromClass([fieldValue class]));
+  }
+}
+
+/**
+ * Helper to parse a scalar value (i.e. not an NSDictionary, NSArray, or FIRFieldValue).
+ *
+ * Note that it handles all NSNumber values that are encodable as int64_t or doubles
+ * (depending on the underlying type of the NSNumber). Unsigned integer values are handled though
+ * any value outside what is representable by int64_t (a signed 64-bit value) will throw an
+ * exception.
+ *
+ * @return The parsed value.
+ */
+- (Message<google_firestore_v1_Value>)parseScalarValue:(nullable id)input
+                                               context:(ParseContext &&)context {
+  if (!input || [input isMemberOfClass:[NSNull class]]) {
+    return NullValue();
+
+  } else if ([input isKindOfClass:[NSNumber class]]) {
+    // Recover the underlying type of the number, using the method described here:
+    // http://stackoverflow.com/questions/2518761/get-type-of-nsnumber
+    const char *cType = [input objCType];
+
+    // Type Encoding values taken from
+    // https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/
+    // Articles/ocrtTypeEncodings.html
+    switch (cType[0]) {
+      case 'q':
+        return [self encodeInteger:[input longLongValue]];
+
+      case 'i':  // Falls through.
+      case 's':  // Falls through.
+      case 'l':  // Falls through.
+      case 'I':  // Falls through.
+      case 'S':
+        // Coerce integer values that aren't long long. Allow unsigned integer types that are
+        // guaranteed small enough to skip a length check.
+        return [self encodeInteger:[input longLongValue]];
+
+      case 'L':  // Falls through.
+      case 'Q':
+        // Unsigned integers that could be too large. Note that the 'L' (long) case is handled here
+        // because when compiled for LP64, unsigned long is 64 bits and could overflow int64_t.
+        {
+          unsigned long long extended = [input unsignedLongLongValue];
+
+          if (extended > LLONG_MAX) {
+            ThrowInvalidArgument("NSNumber (%s) is too large%s", [input unsignedLongLongValue],
+                                 context.FieldDescription());
+
+          } else {
+            return [self encodeInteger:static_cast<int64_t>(extended)];
+          }
+        }
+
+      case 'f':
+        return [self encodeDouble:[input doubleValue]];
+
+      case 'd':
+        // Double values are already the right type, so just reuse the existing boxed double.
+        //
+        // Note that NSNumber already performs NaN normalization to a single shared instance
+        // so there's no need to treat NaN specially here.
+        return [self encodeDouble:[input doubleValue]];
+
+      case 'B':  // Falls through.
+      case 'c':  // Falls through.
+      case 'C':
+        // Boolean values are weird.
+        //
+        // On arm64, objCType of a BOOL-valued NSNumber will be "c", even though @encode(BOOL)
+        // returns "B". "c" is the same as @encode(signed char). Unfortunately this means that
+        // legitimate usage of signed chars is impossible, but this should be rare.
+        //
+        // Additionally, for consistency, map unsigned chars to bools in the same way.
+        return [self encodeBoolean:[input boolValue]];
+
+      default:
+        // All documented codes should be handled above, so this shouldn't happen.
+        HARD_FAIL("Unknown NSNumber objCType %s on %s", cType, input);
+    }
+
+  } else if ([input isKindOfClass:[NSString class]]) {
+    std::string inputString = util::MakeString(input);
+    return [self encodeStringValue:inputString];
+
+  } else if ([input isKindOfClass:[NSDate class]]) {
+    NSDate *inputDate = input;
+    return [self encodeTimestampValue:api::MakeTimestamp(inputDate)];
+
+  } else if ([input isKindOfClass:[FIRTimestamp class]]) {
+    FIRTimestamp *inputTimestamp = input;
+    Timestamp timestamp = TimestampInternal::Truncate(api::MakeTimestamp(inputTimestamp));
+    return [self encodeTimestampValue:timestamp];
+
+  } else if ([input isKindOfClass:[FIRGeoPoint class]]) {
+    return [self encodeGeoPoint:api::MakeGeoPoint(input)];
+  } else if ([input isKindOfClass:[NSData class]]) {
+    NSData *inputData = input;
+    return [self encodeBlob:(nanopb::MakeByteString(inputData))];
+
+  } else if ([input isKindOfClass:[FSTDocumentKeyReference class]]) {
+    FSTDocumentKeyReference *reference = input;
+    if (reference.databaseID != _databaseID) {
+      const DatabaseId &other = reference.databaseID;
+      ThrowInvalidArgument(
+          "Document Reference is for database %s/%s but should be for database %s/%s%s",
+          other.project_id(), other.database_id(), _databaseID.project_id(),
+          _databaseID.database_id(), context.FieldDescription());
+    }
+    return [self encodeReference:_databaseID key:reference.key];
+
+  } else {
+    ThrowInvalidArgument("Unsupported type: %s%s", NSStringFromClass([input class]),
+                         context.FieldDescription());
+  }
+}
+
+- (Message<google_firestore_v1_Value>)encodeBoolean:(bool)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_boolean_value_tag;
+  result->boolean_value = value;
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeInteger:(int64_t)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_integer_value_tag;
+  result->integer_value = value;
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeDouble:(double)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_double_value_tag;
+  result->double_value = value;
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeTimestampValue:(Timestamp)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_timestamp_value_tag;
+  result->timestamp_value.seconds = value.seconds();
+  result->timestamp_value.nanos = value.nanoseconds();
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeStringValue:(const std::string &)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_string_value_tag;
+  result->string_value = nanopb::MakeBytesArray(value);
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeBlob:(const nanopb::ByteString &)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_bytes_value_tag;
+  // Copy the blob so that pb_release can do the right thing.
+  result->bytes_value = nanopb::CopyBytesArray(value.get());
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeReference:(const DatabaseId &)databaseId
+                                                  key:(const DocumentKey &)key {
+  HARD_ASSERT(_databaseID == databaseId, "Database %s cannot encode reference from %s",
+              _databaseID.ToString(), databaseId.ToString());
+
+  std::string referenceName = ResourcePath({"projects", databaseId.project_id(), "databases",
+                                            databaseId.database_id(), "documents", key.ToString()})
+                                  .CanonicalString();
+
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_reference_value_tag;
+  result->reference_value = nanopb::MakeBytesArray(referenceName);
+  return result;
+}
+
+- (Message<google_firestore_v1_Value>)encodeGeoPoint:(const GeoPoint &)value {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_geo_point_value_tag;
+  result->geo_point_value.latitude = value.latitude();
+  result->geo_point_value.longitude = value.longitude();
+  return result;
+}
+
+- (Message<google_firestore_v1_ArrayValue>)parseArrayTransformElements:(NSArray<id> *)elements {
+  ParseAccumulator accumulator{UserDataSource::Argument};
+
+  Message<google_firestore_v1_ArrayValue> array_value;
+  array_value->values_count = CheckedSize(elements.count);
+  array_value->values = nanopb::MakeArray<google_firestore_v1_Value>(array_value->values_count);
+
+  for (NSUInteger i = 0; i < elements.count; i++) {
+    id element = elements[i];
+    // Although array transforms are used with writes, the actual elements being unioned or removed
+    // are not considered writes since they cannot contain any FieldValue sentinels, etc.
+    ParseContext context = accumulator.RootContext();
+
+    auto parsedElement = [self parseData:element context:context.ChildContext(i)];
+    HARD_ASSERT(parsedElement && accumulator.field_transforms().empty(),
+                "Failed to properly parse array transform element: %s", element);
+    array_value->values[i] = *parsedElement->release();
+  }
+  return array_value;
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.h
new file mode 100644
index 0000000..2f0f3d6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#include <memory>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
+#include "Firestore/core/src/api/api_fwd.h"
+
+namespace api = firebase::firestore::api;
+
+/**
+ * Converts Firestore's internal types to the API types that we expose to the
+ * user.
+ */
+@interface FSTUserDataWriter : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+
+- (instancetype)initWithFirestore:(std::shared_ptr<api::Firestore>)firestore
+          serverTimestampBehavior:(FIRServerTimestampBehavior)serverTimestampBehavior;
+
+- (id)convertedValue:(const firebase::firestore::google_firestore_v1_Value&)value;
+
+@end
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.mm
new file mode 100644
index 0000000..72c8599
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/FSTUserDataWriter.mm	
@@ -0,0 +1,166 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "Firestore/Source/API/FSTUserDataWriter.h"
+
+#import <Firestore/core/src/nanopb/nanopb_util.h>
+#import <Firestore/core/src/util/hard_assert.h>
+#import <Foundation/Foundation.h>
+
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#include "Firestore/Source/API/converters.h"
+#include "Firestore/core/include/firebase/firestore/geo_point.h"
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/server_timestamp_util.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+@class FIRTimestamp;
+
+namespace api = firebase::firestore::api;
+namespace util = firebase::firestore::util;
+namespace model = firebase::firestore::model;
+namespace nanopb = firebase::firestore::nanopb;
+
+using api::MakeFIRDocumentReference;
+using api::MakeFIRGeoPoint;
+using api::MakeFIRTimestamp;
+using firebase::firestore::GeoPoint;
+using firebase::firestore::google_firestore_v1_ArrayValue;
+using firebase::firestore::google_firestore_v1_MapValue;
+using firebase::firestore::google_firestore_v1_Value;
+using firebase::firestore::google_protobuf_Timestamp;
+using model::DatabaseId;
+using model::DocumentKey;
+using model::GetLocalWriteTime;
+using model::GetPreviousValue;
+using model::GetTypeOrder;
+using model::TypeOrder;
+using nanopb::MakeByteString;
+using nanopb::MakeBytesArray;
+using nanopb::MakeNSData;
+using nanopb::MakeString;
+using nanopb::MakeStringView;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation FSTUserDataWriter {
+  std::shared_ptr<api::Firestore> _firestore;
+  FIRServerTimestampBehavior _serverTimestampBehavior;
+}
+
+- (instancetype)initWithFirestore:(std::shared_ptr<api::Firestore>)firestore
+          serverTimestampBehavior:(FIRServerTimestampBehavior)serverTimestampBehavior {
+  self = [super init];
+  if (self) {
+    _firestore = std::move(firestore);
+    _serverTimestampBehavior = serverTimestampBehavior;
+  }
+  return self;
+}
+
+- (id)convertedValue:(const google_firestore_v1_Value &)value {
+  switch (GetTypeOrder(value)) {
+    case TypeOrder::kMap:
+      return [self convertedObject:value.map_value];
+    case TypeOrder::kArray:
+      return [self convertedArray:value.array_value];
+    case TypeOrder::kReference:
+      return [self convertedReference:value];
+    case TypeOrder::kTimestamp:
+      return [self convertedTimestamp:value.timestamp_value];
+    case TypeOrder::kServerTimestamp:
+      return [self convertedServerTimestamp:value];
+    case TypeOrder::kNull:
+      return [NSNull null];
+    case TypeOrder::kBoolean:
+      return value.boolean_value ? @YES : @NO;
+    case TypeOrder::kNumber:
+      return value.which_value_type == google_firestore_v1_Value_integer_value_tag
+                 ? @(value.integer_value)
+                 : @(value.double_value);
+    case TypeOrder::kString:
+      return util::MakeNSString(MakeStringView(value.string_value));
+    case TypeOrder::kBlob:
+      return MakeNSData(value.bytes_value);
+    case TypeOrder::kGeoPoint:
+      return MakeFIRGeoPoint(
+          GeoPoint(value.geo_point_value.latitude, value.geo_point_value.longitude));
+  }
+
+  UNREACHABLE();
+}
+
+- (NSDictionary<NSString *, id> *)convertedObject:(const google_firestore_v1_MapValue &)mapValue {
+  NSMutableDictionary *result = [NSMutableDictionary dictionary];
+  for (pb_size_t i = 0; i < mapValue.fields_count; ++i) {
+    absl::string_view key = MakeStringView(mapValue.fields[i].key);
+    const google_firestore_v1_Value &value = mapValue.fields[i].value;
+    result[util::MakeNSString(key)] = [self convertedValue:value];
+  }
+  return result;
+}
+
+- (NSArray<id> *)convertedArray:(const google_firestore_v1_ArrayValue &)arrayValue {
+  NSMutableArray *result = [NSMutableArray arrayWithCapacity:arrayValue.values_count];
+  for (pb_size_t i = 0; i < arrayValue.values_count; ++i) {
+    [result addObject:[self convertedValue:arrayValue.values[i]]];
+  }
+  return result;
+}
+
+- (id)convertedServerTimestamp:(const google_firestore_v1_Value &)serverTimestampValue {
+  switch (_serverTimestampBehavior) {
+    case FIRServerTimestampBehavior::FIRServerTimestampBehaviorNone:
+      return [NSNull null];
+    case FIRServerTimestampBehavior::FIRServerTimestampBehaviorEstimate:
+      return [self convertedTimestamp:GetLocalWriteTime(serverTimestampValue)];
+    case FIRServerTimestampBehavior::FIRServerTimestampBehaviorPrevious: {
+      auto previous_value = GetPreviousValue(serverTimestampValue);
+      return previous_value ? [self convertedValue:*previous_value] : [NSNull null];
+    }
+  }
+
+  UNREACHABLE();
+}
+
+- (FIRTimestamp *)convertedTimestamp:(const google_protobuf_Timestamp &)value {
+  return MakeFIRTimestamp(firebase::Timestamp{value.seconds, value.nanos});
+}
+
+- (FIRDocumentReference *)convertedReference:(const google_firestore_v1_Value &)value {
+  std::string ref = MakeString(value.reference_value);
+  DatabaseId databaseID = DatabaseId::FromName(ref);
+  DocumentKey key = DocumentKey::FromName(ref);
+  if (databaseID != _firestore->database_id()) {
+    LOG_WARN("Document reference is for a different database (%s/%s) which "
+             "is not supported. It will be treated as a reference within the current database "
+             "(%s/%s) instead.",
+             databaseID.project_id(), databaseID.database_id(), databaseID.project_id(),
+             databaseID.database_id());
+  }
+  return MakeFIRDocumentReference(key, _firestore);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.h
new file mode 100644
index 0000000..f5d0e45
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.h	
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_SOURCE_API_CONVERTERS_H_
+#define FIRESTORE_SOURCE_API_CONVERTERS_H_
+
+#if !defined(__OBJC__)
+#error "This header only supports Objective-C++"
+#endif  // !defined(__OBJC__)
+
+#import <Foundation/Foundation.h>
+
+#include <memory>
+
+@class FIRGeoPoint;
+@class FIRTimestamp;
+@class FIRDocumentReference;
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace firebase {
+
+class Timestamp;
+
+namespace firestore {
+
+class GeoPoint;
+
+namespace model {
+class DocumentKey;
+}
+
+namespace api {
+
+class Firestore;
+
+/** Converts a user-supplied FIRGeoPoint to the equivalent C++ GeoPoint. */
+GeoPoint MakeGeoPoint(FIRGeoPoint* geo_point);
+
+/** Converts a C++ GeoPoint to the equivalent Objective-C FIRGeoPoint. */
+FIRGeoPoint* MakeFIRGeoPoint(const GeoPoint& geo_point);
+
+/** Converts a user-supplied FIRTimestamp to the equivalent C++ Timestamp. */
+Timestamp MakeTimestamp(FIRTimestamp* timestamp);
+Timestamp MakeTimestamp(NSDate* date);
+
+FIRTimestamp* MakeFIRTimestamp(const Timestamp& timestamp);
+
+FIRDocumentReference* MakeFIRDocumentReference(const model::DocumentKey& document_key,
+                                               std::shared_ptr<Firestore> firestore);
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
+
+#endif  // FIRESTORE_SOURCE_API_CONVERTERS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.mm
new file mode 100644
index 0000000..251d3e5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/API/converters.mm	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/Source/API/converters.h"
+
+#include <utility>
+
+#import "FIRGeoPoint.h"
+#import "FIRTimestamp.h"
+
+#include "Firestore/Source/API/FIRDocumentReference+Internal.h"
+#include "Firestore/core/include/firebase/firestore/geo_point.h"
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/model/document_key.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+GeoPoint MakeGeoPoint(FIRGeoPoint* geo_point) {
+  return GeoPoint(geo_point.latitude, geo_point.longitude);
+}
+
+FIRGeoPoint* MakeFIRGeoPoint(const GeoPoint& geo_point) {
+  return [[FIRGeoPoint alloc] initWithLatitude:geo_point.latitude()
+                                     longitude:geo_point.longitude()];
+}
+
+Timestamp MakeTimestamp(FIRTimestamp* timestamp) {
+  return Timestamp(timestamp.seconds, timestamp.nanoseconds);
+}
+
+Timestamp MakeTimestamp(NSDate* date) {
+  FIRTimestamp* timestamp = [FIRTimestamp timestampWithDate:date];
+  return MakeTimestamp(timestamp);
+}
+
+FIRTimestamp* MakeFIRTimestamp(const Timestamp& timestamp) {
+  return [[FIRTimestamp alloc] initWithSeconds:timestamp.seconds()
+                                   nanoseconds:timestamp.nanoseconds()];
+}
+
+FIRDocumentReference* MakeFIRDocumentReference(const model::DocumentKey& key,
+                                               std::shared_ptr<Firestore> firestore) {
+  return [[FIRDocumentReference alloc] initWithKey:key firestore:std::move(firestore)];
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRCollectionReference.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRCollectionReference.h
new file mode 100644
index 0000000..6623f51
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRCollectionReference.h	
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRQuery.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRDocumentReference;
+
+/**
+ * A `FIRCollectionReference` object can be used for adding documents, getting document references,
+ * and querying for documents (using the methods inherited from `FIRQuery`).
+ */
+NS_SWIFT_NAME(CollectionReference)
+@interface FIRCollectionReference : FIRQuery
+
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRCollectionReference cannot be created directly.")));
+
+/** ID of the referenced collection. */
+@property(nonatomic, strong, readonly) NSString *collectionID;
+
+/**
+ * For subcollections, `parent` returns the containing `FIRDocumentReference`.  For root
+ * collections, nil is returned.
+ */
+@property(nonatomic, strong, nullable, readonly) FIRDocumentReference *parent;
+
+/**
+ * A string containing the slash-separated path to this this `FIRCollectionReference` (relative to
+ * the root of the database).
+ */
+@property(nonatomic, strong, readonly) NSString *path;
+
+/**
+ * Returns a FIRDocumentReference pointing to a new document with an auto-generated ID.
+ *
+ * @return A FIRDocumentReference pointing to a new document with an auto-generated ID.
+ */
+- (FIRDocumentReference *)documentWithAutoID NS_SWIFT_NAME(document());
+
+/**
+ * Gets a `FIRDocumentReference` referring to the document at the specified path, relative to this
+ * collection's own path.
+ *
+ * @param documentPath The slash-separated relative path of the document for which to get a
+ * `FIRDocumentReference`.
+ *
+ * @return The `FIRDocumentReference` for the specified document path.
+ */
+- (FIRDocumentReference *)documentWithPath:(NSString *)documentPath NS_SWIFT_NAME(document(_:));
+
+/**
+ * Adds a new document to this collection with the specified data, assigning it a document ID
+ * automatically.
+ *
+ * @param data An `NSDictionary` containing the data for the new document.
+ *
+ * @return A `FIRDocumentReference` pointing to the newly created document.
+ */
+- (FIRDocumentReference *)addDocumentWithData:(NSDictionary<NSString *, id> *)data
+    NS_SWIFT_NAME(addDocument(data:));
+
+/**
+ * Adds a new document to this collection with the specified data, assigning it a document ID
+ * automatically.
+ *
+ * @param data An `NSDictionary` containing the data for the new document.
+ * @param completion A block to execute once the document has been successfully written to
+ *     the server. This block will not be called while the client is offline, though local
+ *     changes will be visible immediately.
+ *
+ * @return A `FIRDocumentReference` pointing to the newly created document.
+ */
+// clang-format off
+// clang-format breaks the NS_SWIFT_NAME attribute
+- (FIRDocumentReference *)addDocumentWithData:(NSDictionary<NSString *, id> *)data
+                                   completion:
+                                       (nullable void (^)(NSError *_Nullable error))completion
+    NS_SWIFT_NAME(addDocument(data:completion:));
+// clang-format on
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentChange.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentChange.h
new file mode 100644
index 0000000..1acff35
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentChange.h	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRQueryDocumentSnapshot;
+
+#if defined(NS_CLOSED_ENUM)
+/** An enumeration of document change types. */
+typedef NS_CLOSED_ENUM(NSInteger, FIRDocumentChangeType)
+#else
+/** An enumeration of document change types. */
+typedef NS_ENUM(NSInteger, FIRDocumentChangeType)
+#endif
+{
+  /** Indicates a new document was added to the set of documents matching the query. */
+  FIRDocumentChangeTypeAdded,
+  /** Indicates a document within the query was modified. */
+  FIRDocumentChangeTypeModified,
+  /**
+   * Indicates a document within the query was removed (either deleted or no longer matches
+   * the query.
+   */
+  FIRDocumentChangeTypeRemoved
+} NS_SWIFT_NAME(DocumentChangeType);
+
+/**
+ * A `FIRDocumentChange` represents a change to the documents matching a query. It contains the
+ * document affected and the type of change that occurred (added, modified, or removed).
+ */
+NS_SWIFT_NAME(DocumentChange)
+@interface FIRDocumentChange : NSObject
+
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRDocumentChange cannot be created directly.")));
+
+/** The type of change that occurred (added, modified, or removed). */
+@property(nonatomic, readonly) FIRDocumentChangeType type;
+
+/** The document affected by this change. */
+@property(nonatomic, strong, readonly) FIRQueryDocumentSnapshot *document;
+
+/**
+ * The index of the changed document in the result set immediately prior to this FIRDocumentChange
+ * (i.e. supposing that all prior FIRDocumentChange objects have been applied). NSNotFound for
+ * FIRDocumentChangeTypeAdded events.
+ */
+@property(nonatomic, readonly) NSUInteger oldIndex;
+
+/**
+ * The index of the changed document in the result set immediately after this FIRDocumentChange
+ * (i.e. supposing that all prior FIRDocumentChange objects and the current FIRDocumentChange object
+ * have been applied). NSNotFound for FIRDocumentChangeTypeRemoved events.
+ */
+@property(nonatomic, readonly) NSUInteger newIndex;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentReference.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentReference.h
new file mode 100644
index 0000000..6afba82
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentReference.h	
@@ -0,0 +1,264 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRFirestoreSource.h"
+#import "FIRListenerRegistration.h"
+
+@class FIRCollectionReference;
+@class FIRDocumentSnapshot;
+@class FIRFirestore;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * A block type used to handle snapshot updates.
+ */
+typedef void (^FIRDocumentSnapshotBlock)(FIRDocumentSnapshot *_Nullable snapshot,
+                                         NSError *_Nullable error);
+
+/**
+ * A `FIRDocumentReference` refers to a document location in a Firestore database and can be
+ * used to write, read, or listen to the location. The document at the referenced location
+ * may or may not exist. A `FIRDocumentReference` can also be used to create a
+ * `FIRCollectionReference` to a subcollection.
+ */
+NS_SWIFT_NAME(DocumentReference)
+@interface FIRDocumentReference : NSObject
+
+/** :nodoc: */
+- (instancetype)init
+    __attribute__((unavailable("FIRDocumentReference cannot be created directly.")));
+
+/** The ID of the document referred to. */
+@property(nonatomic, strong, readonly) NSString *documentID;
+
+/** A reference to the collection to which this `DocumentReference` belongs. */
+@property(nonatomic, strong, readonly) FIRCollectionReference *parent;
+
+/** The `FIRFirestore` for the Firestore database (useful for performing transactions, etc.). */
+@property(nonatomic, strong, readonly) FIRFirestore *firestore;
+
+/**
+ * A string representing the path of the referenced document (relative to the root of the
+ * database).
+ */
+@property(nonatomic, strong, readonly) NSString *path;
+
+/**
+ * Gets a `FIRCollectionReference` referring to the collection at the specified
+ * path, relative to this document.
+ *
+ * @param collectionPath The slash-separated relative path of the collection for which to get a
+ * `FIRCollectionReference`.
+ *
+ * @return The `FIRCollectionReference` at the specified _collectionPath_.
+ */
+- (FIRCollectionReference *)collectionWithPath:(NSString *)collectionPath
+    NS_SWIFT_NAME(collection(_:));
+
+#pragma mark - Writing Data
+
+/**
+ * Writes to the document referred to by `FIRDocumentReference`. If the document doesn't yet exist,
+ * this method creates it and then sets the data. If the document exists, this method overwrites
+ * the document data with the new values.
+ *
+ * @param documentData An `NSDictionary` that contains the fields and data to write to the
+ * document.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData;
+
+/**
+ * Writes to the document referred to by this DocumentReference. If the document does not yet
+ * exist, it will be created. If you pass `merge:YES`, the provided data will be merged into
+ * any existing document.
+ *
+ * @param documentData An `NSDictionary` that contains the fields and data to write to the
+ * document.
+ * @param merge Whether to merge the provided data into any existing document.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData merge:(BOOL)merge;
+
+/**
+ * Writes to the document referred to by `document` and only replace the fields
+ * specified under `mergeFields`. Any field that is not specified in `mergeFields`
+ * is ignored and remains untouched. If the document doesn't yet exist,
+ * this method creates it and then sets the data.
+ *
+ * It is an error to include a field in `mergeFields` that does not have a corresponding
+ * value in the `data` dictionary.
+ *
+ * @param documentData An `NSDictionary` containing the fields that make up the document
+ * to be written.
+ * @param mergeFields An `NSArray` that contains a list of `NSString` or `FIRFieldPath` elements
+ *     specifying which fields to merge. Fields can contain dots to reference nested fields within
+ *     the document.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData mergeFields:(NSArray<id> *)mergeFields;
+
+/**
+ * Overwrites the document referred to by this `FIRDocumentReference`. If no document exists, it
+ * is created. If a document already exists, it is overwritten.
+ *
+ * @param documentData An `NSDictionary` containing the fields that make up the document
+ *     to be written.
+ * @param completion A block to execute once the document has been successfully written to the
+ *     server. This block will not be called while the client is offline, though local
+ *     changes will be visible immediately.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+     completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Writes to the document referred to by this DocumentReference. If the document does not yet
+ * exist, it will be created. If you pass `merge:YES`, the provided data will be merged into
+ * any existing document.
+ *
+ * @param documentData An `NSDictionary` containing the fields that make up the document
+ * to be written.
+ * @param merge Whether to merge the provided data into any existing document.
+ * @param completion A block to execute once the document has been successfully written to the
+ *     server. This block will not be called while the client is offline, though local
+ *     changes will be visible immediately.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+          merge:(BOOL)merge
+     completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Writes to the document referred to by `document` and only replace the fields
+ * specified under `mergeFields`. Any field that is not specified in `mergeFields`
+ * is ignored and remains untouched. If the document doesn't yet exist,
+ * this method creates it and then sets the data.
+ *
+ * It is an error to include a field in `mergeFields` that does not have a corresponding
+ * value in the `data` dictionary.
+ *
+ * @param documentData An `NSDictionary` containing the fields that make up the document
+ * to be written.
+ * @param mergeFields An `NSArray` that contains a list of `NSString` or `FIRFieldPath` elements
+ *     specifying which fields to merge. Fields can contain dots to reference nested fields within
+ *     the document.
+ * @param completion A block to execute once the document has been successfully written to the
+ *     server. This block will not be called while the client is offline, though local
+ *     changes will be visible immediately.
+ */
+- (void)setData:(NSDictionary<NSString *, id> *)documentData
+    mergeFields:(NSArray<id> *)mergeFields
+     completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Updates fields in the document referred to by this `FIRDocumentReference`.
+ * If the document does not exist, the update fails (specify a completion block to be notified).
+ *
+ * @param fields An `NSDictionary` containing the fields (expressed as an `NSString` or
+ *     `FIRFieldPath`) and values with which to update the document.
+ */
+- (void)updateData:(NSDictionary<id, id> *)fields;
+
+/**
+ * Updates fields in the document referred to by this `FIRDocumentReference`. If the document
+ * does not exist, the update fails and the specified completion block receives an error.
+ *
+ * @param fields An `NSDictionary` containing the fields (expressed as an `NSString` or
+ *     `FIRFieldPath`) and values with which to update the document.
+ * @param completion A block to execute when the update is complete. If the update is successful the
+ *     error parameter will be nil, otherwise it will give an indication of how the update failed.
+ *     This block will only execute when the client is online and the commit has completed against
+ *     the server. The completion handler will not be called when the device is offline, though
+ *     local changes will be visible immediately.
+ */
+- (void)updateData:(NSDictionary<id, id> *)fields
+        completion:(nullable void (^)(NSError *_Nullable error))completion;
+
+// NOTE: this is named 'deleteDocument' because 'delete' is a keyword in Objective-C++.
+/** Deletes the document referred to by this `FIRDocumentReference`. */
+// clang-format off
+- (void)deleteDocument NS_SWIFT_NAME(delete());
+// clang-format on
+
+/**
+ * Deletes the document referred to by this `FIRDocumentReference`.
+ *
+ * @param completion A block to execute once the document has been successfully written to the
+ *     server. This block will not be called while the client is offline, though local
+ *     changes will be visible immediately.
+ */
+// clang-format off
+- (void)deleteDocumentWithCompletion:(nullable void (^)(NSError *_Nullable error))completion
+    NS_SWIFT_NAME(delete(completion:));
+// clang-format on
+
+#pragma mark - Retrieving Data
+
+/**
+ * Reads the document referenced by this `FIRDocumentReference`.
+ *
+ * This method attempts to provide up-to-date data when possible by waiting for
+ * data from the server, but it may return cached data or fail if you are
+ * offline and the server cannot be reached. See the
+ * `getDocument(source:completion:)` method to change this behavior.
+ *
+ * @param completion a block to execute once the document has been successfully read.
+ */
+- (void)getDocumentWithCompletion:(FIRDocumentSnapshotBlock)completion
+    NS_SWIFT_NAME(getDocument(completion:));
+
+/**
+ * Reads the document referenced by this `FIRDocumentReference`.
+ *
+ * @param source indicates whether the results should be fetched from the cache
+ *     only (`Source.cache`), the server only (`Source.server`), or to attempt
+ *     the server and fall back to the cache (`Source.default`).
+ * @param completion a block to execute once the document has been successfully read.
+ */
+// clang-format off
+- (void)getDocumentWithSource:(FIRFirestoreSource)source
+                   completion:(FIRDocumentSnapshotBlock)completion
+    NS_SWIFT_NAME(getDocument(source:completion:));
+// clang-format on
+
+/**
+ * Attaches a listener for DocumentSnapshot events.
+ *
+ * @param listener The listener to attach.
+ *
+ * @return A FIRListenerRegistration that can be used to remove this listener.
+ */
+- (id<FIRListenerRegistration>)addSnapshotListener:(FIRDocumentSnapshotBlock)listener
+    NS_SWIFT_NAME(addSnapshotListener(_:));
+
+/**
+ * Attaches a listener for DocumentSnapshot events.
+ *
+ * @param includeMetadataChanges Whether metadata-only changes (i.e. only
+ *     `FIRDocumentSnapshot.metadata` changed) should trigger snapshot events.
+ * @param listener The listener to attach.
+ *
+ * @return A FIRListenerRegistration that can be used to remove this listener.
+ */
+// clang-format off
+- (id<FIRListenerRegistration>)
+addSnapshotListenerWithIncludeMetadataChanges:(BOOL)includeMetadataChanges
+                                     listener:(FIRDocumentSnapshotBlock)listener
+    NS_SWIFT_NAME(addSnapshotListener(includeMetadataChanges:listener:));
+// clang-format on
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentSnapshot.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentSnapshot.h
new file mode 100644
index 0000000..5d9fd31
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRDocumentSnapshot.h	
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FIRDocumentReference;
+@class FIRSnapshotMetadata;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Controls the return value for server timestamps that have not yet been set to
+ * their final value.
+ */
+typedef NS_ENUM(NSInteger, FIRServerTimestampBehavior) {
+  /**
+   * Return `NSNull` for `FieldValue.serverTimestamp()` fields that have not yet
+   * been set to their final value.
+   */
+  FIRServerTimestampBehaviorNone,
+
+  /**
+   * Return a local estimates for `FieldValue.serverTimestamp()`
+   * fields that have not yet been set to their final value. This estimate will
+   * likely differ from the final value and may cause these pending values to
+   * change once the server result becomes available.
+   */
+  FIRServerTimestampBehaviorEstimate,
+
+  /**
+   * Return the previous value for `FieldValue.serverTimestamp()` fields that
+   * have not yet been set to their final value.
+   */
+  FIRServerTimestampBehaviorPrevious
+} NS_SWIFT_NAME(ServerTimestampBehavior);
+
+/**
+ * A `FIRDocumentSnapshot` contains data read from a document in your Firestore database. The data
+ * can be extracted with the `data` property or by using subscript syntax to access a specific
+ * field.
+ *
+ * For a `FIRDocumentSnapshot` that points to a non-existing document, any data access will return
+ * `nil`. You can use the `exists` property to explicitly verify a documents existence.
+ */
+NS_SWIFT_NAME(DocumentSnapshot)
+@interface FIRDocumentSnapshot : NSObject
+
+/** :nodoc: */
+- (instancetype)init
+    __attribute__((unavailable("FIRDocumentSnapshot cannot be created directly.")));
+
+/** True if the document exists. */
+@property(nonatomic, assign, readonly) BOOL exists;
+
+/** A `FIRDocumentReference` to the document location. */
+@property(nonatomic, strong, readonly) FIRDocumentReference *reference;
+
+/** The ID of the document for which this `FIRDocumentSnapshot` contains data. */
+@property(nonatomic, copy, readonly) NSString *documentID;
+
+/** Metadata about this snapshot concerning its source and if it has local modifications. */
+@property(nonatomic, strong, readonly) FIRSnapshotMetadata *metadata;
+
+/**
+ * Retrieves all fields in the document as an `NSDictionary`. Returns `nil` if the document doesn't
+ * exist.
+ *
+ * Server-provided timestamps that have not yet been set to their final value will be returned as
+ * `NSNull`. You can use `dataWithServerTimestampBehavior()` to configure this behavior.
+ *
+ * @return An `NSDictionary` containing all fields in the document or `nil` if the document doesn't
+ *     exist.
+ */
+- (nullable NSDictionary<NSString *, id> *)data;
+
+/**
+ * Retrieves all fields in the document as a `Dictionary`. Returns `nil` if the document doesn't
+ * exist.
+ *
+ * @param serverTimestampBehavior Configures how server timestamps that have not yet been set to
+ *     their final value are returned from the snapshot.
+ * @return A `Dictionary` containing all fields in the document or `nil` if the document doesn't
+ *     exist.
+ */
+- (nullable NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior;
+
+/**
+ * Retrieves a specific field from the document. Returns `nil` if the document or the field doesn't
+ * exist.
+ *
+ * The timestamps that have not yet been set to their final value will be returned as `NSNull`. The
+ * can use `get(_:serverTimestampBehavior:)` to configure this behavior.
+ *
+ * @param field The field to retrieve.
+ * @return The value contained in the field or `nil` if the document or field doesn't exist.
+ */
+- (nullable id)valueForField:(id)field NS_SWIFT_NAME(get(_:));
+
+/**
+ * Retrieves a specific field from the document. Returns `nil` if the document or the field doesn't
+ * exist.
+ *
+ * The timestamps that have not yet been set to their final value will be returned as `NSNull`. The
+ * can use `get(_:serverTimestampBehavior:)` to configure this behavior.
+ *
+ * @param field The field to retrieve.
+ * @param serverTimestampBehavior Configures how server timestamps that have not yet been set to
+ *     their final value are returned from the snapshot.
+ * @return The value contained in the field or `nil` if the document or field doesn't exist.
+ */
+// clang-format off
+- (nullable id)valueForField:(id)field
+     serverTimestampBehavior:(FIRServerTimestampBehavior)serverTimestampBehavior
+               NS_SWIFT_NAME(get(_:serverTimestampBehavior:));
+// clang-format on
+
+/**
+ * Retrieves a specific field from the document.
+ *
+ * @param key The field to retrieve.
+ *
+ * @return The value contained in the field or `nil` if the document or field doesn't exist.
+ */
+- (nullable id)objectForKeyedSubscript:(id)key;
+
+@end
+
+/**
+ * A `FIRQueryDocumentSnapshot` contains data read from a document in your Firestore database as
+ * part of a query. The document is guaranteed to exist and its data can be extracted with the
+ * `data` property or by using subscript syntax to access a specific field.
+ *
+ * A `FIRQueryDocumentSnapshot` offers the same API surface as a `FIRDocumentSnapshot`. As
+ * deleted documents are not returned from queries, its `exists` property will always be true and
+ * `data:` will never return `nil`.
+ */
+NS_SWIFT_NAME(QueryDocumentSnapshot)
+@interface FIRQueryDocumentSnapshot : FIRDocumentSnapshot
+
+/** :nodoc: */
+- (instancetype)init
+    __attribute__((unavailable("FIRQueryDocumentSnapshot cannot be created directly.")));
+
+/**
+ * Retrieves all fields in the document as an `NSDictionary`.
+ *
+ * Server-provided timestamps that have not yet been set to their final value will be returned as
+ * `NSNull`. You can use `dataWithServerTimestampBehavior()` to configure this behavior.
+ *
+ * @return An `NSDictionary` containing all fields in the document.
+ */
+- (NSDictionary<NSString *, id> *)data;
+
+/**
+ * Retrieves all fields in the document as a `Dictionary`.
+ *
+ * @param serverTimestampBehavior Configures how server timestamps that have not yet been set to
+ *     their final value are returned from the snapshot.
+ * @return A `Dictionary` containing all fields in the document.
+ */
+- (NSDictionary<NSString *, id> *)dataWithServerTimestampBehavior:
+    (FIRServerTimestampBehavior)serverTimestampBehavior;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldPath.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldPath.h
new file mode 100644
index 0000000..9f64fbd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldPath.h	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * A `FieldPath` refers to a field in a document. The path may consist of a single field name
+ * (referring to a top level field in the document), or a list of field names (referring to a nested
+ * field in the document).
+ */
+NS_SWIFT_NAME(FieldPath)
+@interface FIRFieldPath : NSObject <NSCopying>
+
+/** :nodoc: */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Creates a `FieldPath` from the provided field names. If more than one field name is provided, the
+ * path will point to a nested field in a document.
+ *
+ * @param fieldNames A list of field names.
+ * @return A `FieldPath` that points to a field location in a document.
+ */
+- (instancetype)initWithFields:(NSArray<NSString *> *)fieldNames NS_SWIFT_NAME(init(_:));
+
+/**
+ * A special sentinel `FieldPath` to refer to the ID of a document. It can be used in queries to
+ * sort or filter by the document ID.
+ */
++ (instancetype)documentID;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldValue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldValue.h
new file mode 100644
index 0000000..24d1007
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFieldValue.h	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Sentinel values that can be used when writing document fields with setData() or updateData().
+ */
+NS_SWIFT_NAME(FieldValue)
+@interface FIRFieldValue : NSObject
+
+/** :nodoc: */
+- (instancetype)init NS_UNAVAILABLE;
+
+/** Used with updateData() to mark a field for deletion. */
+// clang-format off
++ (instancetype)fieldValueForDelete NS_SWIFT_NAME(delete());
+// clang-format on
+
+/**
+ * Used with setData() or updateData() to include a server-generated timestamp in the written
+ * data.
+ */
++ (instancetype)fieldValueForServerTimestamp NS_SWIFT_NAME(serverTimestamp());
+
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * union the given elements with any array value that already exists on the server. Each
+ * specified element that doesn't already exist in the array will be added to the end. If the
+ * field being modified is not already an array it will be overwritten with an array containing
+ * exactly the specified elements.
+ *
+ * @param elements The elements to union into the array.
+ * @return The FieldValue sentinel for use in a call to setData() or updateData().
+ */
++ (instancetype)fieldValueForArrayUnion:(NSArray<id> *)elements NS_SWIFT_NAME(arrayUnion(_:));
+
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * remove the given elements from any array value that already exists on the server. All
+ * instances of each element specified will be removed from the array. If the field being
+ * modified is not already an array it will be overwritten with an empty array.
+ *
+ * @param elements The elements to remove from the array.
+ * @return The FieldValue sentinel for use in a call to setData() or updateData().
+ */
++ (instancetype)fieldValueForArrayRemove:(NSArray<id> *)elements NS_SWIFT_NAME(arrayRemove(_:));
+
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * increment the field's current value by the given value.
+ *
+ * If the current value is an integer or a double, both the current and the given value will be
+ * interpreted as doubles and all arithmetic will follow IEEE 754 semantics. Otherwise, the
+ * transformation will set the field to the given value.
+ *
+ * @param d The double value to increment by.
+ * @return The FieldValue sentinel for use in a call to setData() or update().
+ */
++ (instancetype)fieldValueForDoubleIncrement:(double)d NS_SWIFT_NAME(increment(_:));
+
+/**
+ * Returns a special value that can be used with setData() or updateData() that tells the server to
+ * increment the field's current value by the given value.
+ *
+ * If the current field value is an integer, possible integer overflows are resolved to LONG_MAX or
+ * LONG_MIN. If the current field value is a double, both values will be interpreted as doubles and
+ * the arithmetic will follow IEEE 754 semantics.
+ *
+ * If field is not an integer or double, or if the field does not yet exist, the transformation
+ * will set the field to the given value.
+ *
+ * @param l The integer value to increment by.
+ * @return The FieldValue sentinel for use in a call to setData() or updateData().
+ */
++ (instancetype)fieldValueForIntegerIncrement:(int64_t)l NS_SWIFT_NAME(increment(_:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestore.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestore.h
new file mode 100644
index 0000000..8ec30aa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestore.h	
@@ -0,0 +1,330 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRListenerRegistration.h"
+
+@class FIRApp;
+@class FIRCollectionReference;
+@class FIRDocumentReference;
+@class FIRFirestoreSettings;
+@class FIRLoadBundleTask;
+@class FIRLoadBundleTaskProgress;
+@class FIRQuery;
+@class FIRTransaction;
+@class FIRWriteBatch;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * `FIRFirestore` represents a Firestore Database and is the entry point for all Firestore
+ * operations.
+ */
+NS_SWIFT_NAME(Firestore)
+@interface FIRFirestore : NSObject
+
+#pragma mark - Initializing
+/** :nodoc: */
+- (instancetype)init __attribute__((unavailable("Use a static constructor method.")));
+
+/**
+ * Creates, caches, and returns a `FIRFirestore` using the default `FIRApp`. Each subsequent
+ * invocation returns the same `FIRFirestore` object.
+ *
+ * @return The `FIRFirestore` instance.
+ */
++ (instancetype)firestore NS_SWIFT_NAME(firestore());
+
+/**
+ * Creates, caches, and returns a `FIRFirestore` object for the specified _app_. Each subsequent
+ * invocation returns the same `FIRFirestore` object.
+ *
+ * @param app The `FIRApp` instance to use for authentication and as a source of the Google Cloud
+ * Project ID for your Firestore Database. If you want the default instance, you should explicitly
+ * set it to `[FIRApp defaultApp]`.
+ *
+ * @return The `FIRFirestore` instance.
+ */
++ (instancetype)firestoreForApp:(FIRApp *)app NS_SWIFT_NAME(firestore(app:));
+
+/**
+ * Custom settings used to configure this `FIRFirestore` object.
+ */
+@property(nonatomic, copy) FIRFirestoreSettings *settings;
+
+/**
+ * The Firebase App associated with this Firestore instance.
+ */
+@property(strong, nonatomic, readonly) FIRApp *app;
+
+#pragma mark - Collections and Documents
+
+/**
+ * Gets a `FIRCollectionReference` referring to the collection at the specified path within the
+ * database.
+ *
+ * @param collectionPath The slash-separated path of the collection for which to get a
+ * `FIRCollectionReference`.
+ *
+ * @return The `FIRCollectionReference` at the specified _collectionPath_.
+ */
+- (FIRCollectionReference *)collectionWithPath:(NSString *)collectionPath
+    NS_SWIFT_NAME(collection(_:));
+
+/**
+ * Gets a `FIRDocumentReference` referring to the document at the specified path within the
+ * database.
+ *
+ * @param documentPath The slash-separated path of the document for which to get a
+ * `FIRDocumentReference`.
+ *
+ * @return The `FIRDocumentReference` for the specified _documentPath_.
+ */
+- (FIRDocumentReference *)documentWithPath:(NSString *)documentPath NS_SWIFT_NAME(document(_:));
+
+#pragma mark - Collection Group Queries
+
+/**
+ * Creates and returns a new `Query` that includes all documents in the database that are contained
+ * in a collection or subcollection with the given collectionID.
+ *
+ * @param collectionID Identifies the collections to query over. Every collection or subcollection
+ *     with this ID as the last segment of its path will be included. Cannot contain a slash.
+ * @return The created `Query`.
+ */
+- (FIRQuery *)collectionGroupWithID:(NSString *)collectionID NS_SWIFT_NAME(collectionGroup(_:));
+
+#pragma mark - Transactions and Write Batches
+
+/**
+ * Executes the given updateBlock and then attempts to commit the changes applied within an atomic
+ * transaction.
+ *
+ * The maximum number of writes allowed in a single transaction is 500, but note that each usage of
+ * `FieldValue.serverTimestamp()`, `FieldValue.arrayUnion()`, `FieldValue.arrayRemove()`, or
+ * `FieldValue.increment()` inside a transaction counts as an additional write.
+ *
+ * In the updateBlock, a set of reads and writes can be performed atomically using the
+ * `FIRTransaction` object passed to the block. After the updateBlock is run, Firestore will attempt
+ * to apply the changes to the server. If any of the data read has been modified outside of this
+ * transaction since being read, then the transaction will be retried by executing the updateBlock
+ * again. If the transaction still fails after 5 retries, then the transaction will fail.
+ *
+ * Since the updateBlock may be executed multiple times, it should avoiding doing anything that
+ * would cause side effects.
+ *
+ * Any value maybe be returned from the updateBlock. If the transaction is successfully committed,
+ * then the completion block will be passed that value. The updateBlock also has an `NSError` out
+ * parameter. If this is set, then the transaction will not attempt to commit, and the given error
+ * will be passed to the completion block.
+ *
+ * The `FIRTransaction` object passed to the updateBlock contains methods for accessing documents
+ * and collections. Unlike other firestore access, data accessed with the transaction will not
+ * reflect local changes that have not been committed. For this reason, it is required that all
+ * reads are performed before any writes. Transactions must be performed while online. Otherwise,
+ * reads will fail, the final commit will fail, and the completion block will return an error.
+ *
+ * @param updateBlock The block to execute within the transaction context.
+ * @param completion The block to call with the result or error of the transaction. This
+ *     block will run even if the client is offline, unless the process is killed.
+ */
+- (void)runTransactionWithBlock:(id _Nullable (^)(FIRTransaction *, NSError **))updateBlock
+                     completion:(void (^)(id _Nullable result, NSError *_Nullable error))completion;
+
+/**
+ * Creates a write batch, used for performing multiple writes as a single
+ * atomic operation.
+ *
+ * The maximum number of writes allowed in a single batch is 500, but note that each usage of
+ * `FieldValue.serverTimestamp()`, `FieldValue.arrayUnion()`, `FieldValue.arrayRemove()`, or
+ * `FieldValue.increment()` inside a batch counts as an additional write.
+
+ * Unlike transactions, write batches are persisted offline and therefore are preferable when you
+ * don't need to condition your writes on read data.
+ */
+- (FIRWriteBatch *)batch;
+
+#pragma mark - Logging
+
+/** Enables or disables logging from the Firestore client. */
++ (void)enableLogging:(BOOL)logging;
+
+#pragma mark - Network
+
+/**
+ * Configures Firestore to connect to an emulated host instead of the default remote backend. After
+ * Firestore has been used (i.e. a document reference has been instantiated), this value cannot be
+ * changed.
+ */
+- (void)useEmulatorWithHost:(NSString *)host port:(NSInteger)port;
+
+/**
+ * Re-enables usage of the network by this Firestore instance after a prior call to
+ * `disableNetworkWithCompletion`. Completion block, if provided, will be called once network uasge
+ * has been enabled.
+ */
+- (void)enableNetworkWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Disables usage of the network by this Firestore instance. It can be re-enabled by via
+ * `enableNetworkWithCompletion`. While the network is disabled, any snapshot listeners or get calls
+ * will return results from cache and any write operations will be queued until the network is
+ * restored. The completion block, if provided, will be called once network usage has been disabled.
+ */
+- (void)disableNetworkWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Clears the persistent storage. This includes pending writes and cached documents.
+ *
+ * Must be called while the firestore instance is not started (after the app is shutdown or when
+ * the app is first initialized). On startup, this method must be called before other methods
+ * (other than `FIRFirestore.settings`). If the firestore instance is still running, the function
+ * will complete with an error code of `FailedPrecondition`.
+ *
+ * Note: `clearPersistence(completion:)` is primarily intended to help write reliable tests that
+ * use Firestore. It uses the most efficient mechanism possible for dropping existing data but
+ * does not attempt to securely overwrite or otherwise make cached data unrecoverable. For
+ * applications that are sensitive to the disclosure of cache data in between user sessions we
+ * strongly recommend not to enable persistence in the first place.
+ */
+- (void)clearPersistenceWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Waits until all currently pending writes for the active user have been acknowledged by the
+ * backend.
+ *
+ * The completion block is called immediately without error if there are no outstanding writes.
+ * Otherwise, the completion block is called when all previously issued writes (including those
+ * written in a previous app session) have been acknowledged by the backend. The completion
+ * block does not wait for writes that were added after the method is called. If you
+ * wish to wait for additional writes, you have to call `waitForPendingWritesWithCompletion`
+ * again.
+ *
+ * Any outstanding `waitForPendingWritesWithCompletion` completion blocks are called with an
+ * error during user change.
+ */
+- (void)waitForPendingWritesWithCompletion:(void (^)(NSError *_Nullable error))completion;
+
+/**
+ * Attaches a listener for a snapshots-in-sync event. The snapshots-in-sync event indicates that all
+ * listeners affected by a given change have fired, even if a single server-generated change affects
+ * multiple listeners.
+ *
+ * NOTE: The snapshots-in-sync event only indicates that listeners are in sync with each other, but
+ * does not relate to whether those snapshots are in sync with the server. Use SnapshotMetadata in
+ * the individual listeners to determine if a snapshot is from the cache or the server.
+ *
+ * @param listener A callback to be called every time all snapshot listeners are in sync with each
+ * other.
+ * @return A FIRListenerRegistration object that can be used to remove the listener.
+ */
+- (id<FIRListenerRegistration>)addSnapshotsInSyncListener:(void (^)(void))listener
+    NS_SWIFT_NAME(addSnapshotsInSyncListener(_:));
+
+#pragma mark - Terminating
+
+/**
+ * Terminates this `FIRFirestore` instance.
+ *
+ * After calling `terminate` only the `clearPersistence` method may be used. Any other method will
+ * throw an error.
+ *
+ * To restart after termination, simply create a new instance of FIRFirestore with `firestore` or
+ * `firestoreForApp` methods.
+ *
+ * Termination does not cancel any pending writes and any tasks that are awaiting a response from
+ * the server will not be resolved. The next time you start this instance, it will resume attempting
+ * to send these writes to the server.
+ *
+ * Note: Under normal circumstances, calling this method is not required. This method is useful only
+ * when you want to force this instance to release all of its resources or in combination with
+ * `clearPersistence` to ensure that all local state is destroyed between test runs.
+ *
+ * @param completion A block to execute once everything has been terminated.
+ */
+- (void)terminateWithCompletion:(nullable void (^)(NSError *_Nullable error))completion
+    NS_SWIFT_NAME(terminate(completion:));
+
+#pragma mark - Bundles
+
+/**
+ * Loads a Firestore bundle into the local cache.
+ *
+ * @param bundleData Data from the bundle to be loaded.
+ * @return A `FIRLoadBundleTask` (`LoadBundleTask` in Swift) which allows registered observers
+ * to receive progress updates and completion or error events.
+ */
+- (FIRLoadBundleTask *)loadBundle:(NSData *)bundleData NS_SWIFT_NAME(loadBundle(_:));
+
+/**
+ * Loads a Firestore bundle into the local cache.
+ *
+ * @param bundleData Data from the bundle to be loaded.
+ * @param completion A block to execute when loading is in a final state. The `error` parameter
+ * will be set if the block is invoked due to an error. If observers are registered to the
+ * `FIRLoadBundleTask`, this block will be called after all observers are notified.
+ * @return A `FIRLoadBundleTask` (`LoadBundleTask` in Swift) which allows registered observers
+ * to receive progress updates and completion or error events.
+ */
+- (FIRLoadBundleTask *)loadBundle:(NSData *)bundleData
+                       completion:(nullable void (^)(FIRLoadBundleTaskProgress *_Nullable progress,
+                                                     NSError *_Nullable error))completion
+    NS_SWIFT_NAME(loadBundle(_:completion:));
+
+/**
+ * Loads a Firestore bundle into the local cache.
+ *
+ * @param bundleStream An input stream from which the bundle can be read.
+ * @return A `FIRLoadBundleTask` (`LoadBundleTask` in Swift) which allows registered observers
+ * to receive progress updates and completion or error events.
+ */
+- (FIRLoadBundleTask *)loadBundleStream:(NSInputStream *)bundleStream
+    NS_SWIFT_NAME(loadBundle(_:));
+
+/**
+ * Loads a Firestore bundle into the local cache.
+ *
+ * @param bundleStream An input stream from which the bundle can be read.
+ * @param completion A block to execute when the loading is in a final state. The `error` parameter
+ * of the block will be set if it is due to an error. If observers are registered to the returning
+ * `FIRLoadBundleTask`, this block will be called after all observers are notified.
+ * @return A `FIRLoadBundleTask` (`LoadBundleTask` in Swift), which allow registering observers
+ * to receive progress updates, and completion or error events.
+ */
+- (FIRLoadBundleTask *)loadBundleStream:(NSInputStream *)bundleStream
+                             completion:
+                                 (nullable void (^)(FIRLoadBundleTaskProgress *_Nullable progress,
+                                                    NSError *_Nullable error))completion
+    NS_SWIFT_NAME(loadBundle(_:completion:));
+
+/**
+ * Reads a `FIRQuery` (`Query` in Swift) from the local cache, identified by the given name.
+ *
+ * Named queries are packaged into bundles on the server side (along with the resulting documents)
+ * and loaded into local cache using `loadBundle`. Once in the local cache, you can use this method
+ * to extract a query by name.
+ *
+ * @param completion A block to execute with the query read from the local cache. If no query can be
+ * found, its parameter will be `nil`.
+ */
+- (void)getQueryNamed:(NSString *)name
+           completion:(void (^)(FIRQuery *_Nullable query))completion
+    NS_SWIFT_NAME(getQuery(named:completion:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreErrors.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreErrors.h
new file mode 100644
index 0000000..968391c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreErrors.h	
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The Cloud Firestore error domain. */
+FOUNDATION_EXPORT NSString *const FIRFirestoreErrorDomain NS_SWIFT_NAME(FirestoreErrorDomain);
+
+/** Error codes used by Cloud Firestore. */
+typedef NS_ENUM(NSInteger, FIRFirestoreErrorCode) {
+  /**
+   * The operation completed successfully. NSError objects will never have a code with this value.
+   */
+  FIRFirestoreErrorCodeOK = 0,
+
+  /** The operation was cancelled (typically by the caller). */
+  FIRFirestoreErrorCodeCancelled = 1,
+
+  /** Unknown error or an error from a different error domain. */
+  FIRFirestoreErrorCodeUnknown = 2,
+
+  /**
+   * Client specified an invalid argument. Note that this differs from FailedPrecondition.
+   * InvalidArgument indicates arguments that are problematic regardless of the state of the
+   * system (e.g., an invalid field name).
+   */
+  FIRFirestoreErrorCodeInvalidArgument = 3,
+
+  /**
+   * Deadline expired before operation could complete. For operations that change the state of the
+   * system, this error may be returned even if the operation has completed successfully. For
+   * example, a successful response from a server could have been delayed long enough for the
+   * deadline to expire.
+   */
+  FIRFirestoreErrorCodeDeadlineExceeded = 4,
+
+  /** Some requested document was not found. */
+  FIRFirestoreErrorCodeNotFound = 5,
+
+  /** Some document that we attempted to create already exists. */
+  FIRFirestoreErrorCodeAlreadyExists = 6,
+
+  /** The caller does not have permission to execute the specified operation. */
+  FIRFirestoreErrorCodePermissionDenied = 7,
+
+  /**
+   * Some resource has been exhausted, perhaps a per-user quota, or perhaps the entire file system
+   * is out of space.
+   */
+  FIRFirestoreErrorCodeResourceExhausted = 8,
+
+  /**
+   * Operation was rejected because the system is not in a state required for the operation's
+   * execution.
+   */
+  FIRFirestoreErrorCodeFailedPrecondition = 9,
+
+  /**
+   * The operation was aborted, typically due to a concurrency issue like transaction aborts, etc.
+   */
+  FIRFirestoreErrorCodeAborted = 10,
+
+  /** Operation was attempted past the valid range. */
+  FIRFirestoreErrorCodeOutOfRange = 11,
+
+  /** Operation is not implemented or not supported/enabled. */
+  FIRFirestoreErrorCodeUnimplemented = 12,
+
+  /**
+   * Internal errors. Means some invariants expected by underlying system has been broken. If you
+   * see one of these errors, something is very broken.
+   */
+  FIRFirestoreErrorCodeInternal = 13,
+
+  /**
+   * The service is currently unavailable. This is a most likely a transient condition and may be
+   * corrected by retrying with a backoff.
+   */
+  FIRFirestoreErrorCodeUnavailable = 14,
+
+  /** Unrecoverable data loss or corruption. */
+  FIRFirestoreErrorCodeDataLoss = 15,
+
+  /** The request does not have valid authentication credentials for the operation. */
+  FIRFirestoreErrorCodeUnauthenticated = 16
+} NS_SWIFT_NAME(FirestoreErrorCode);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSettings.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSettings.h
new file mode 100644
index 0000000..6d96921
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSettings.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Used to set on-disk cache size to unlimited. Garbage collection will not run. */
+FOUNDATION_EXTERN const int64_t
+    kFIRFirestoreCacheSizeUnlimited NS_SWIFT_NAME(FirestoreCacheSizeUnlimited);
+
+/** Settings used to configure a `FIRFirestore` instance. */
+NS_SWIFT_NAME(FirestoreSettings)
+@interface FIRFirestoreSettings : NSObject <NSCopying>
+
+/**
+ * Creates and returns an empty `FIRFirestoreSettings` object.
+ *
+ * @return The created `FIRFirestoreSettings` object.
+ */
+- (instancetype)init NS_DESIGNATED_INITIALIZER;
+
+/** The hostname to connect to. */
+@property(nonatomic, copy) NSString *host;
+
+/** Whether to use SSL when connecting. */
+@property(nonatomic, getter=isSSLEnabled) BOOL sslEnabled;
+
+/**
+ * A dispatch queue to be used to execute all completion handlers and event handlers. By default,
+ * the main queue is used.
+ */
+@property(nonatomic, strong) dispatch_queue_t dispatchQueue;
+
+/** Set to false to disable local persistent storage. */
+@property(nonatomic, getter=isPersistenceEnabled) BOOL persistenceEnabled;
+
+/**
+ * Sets the cache size threshold above which the SDK will attempt to collect least-recently-used
+ * documents. The size is not a guarantee that the cache will stay below that size, only that if
+ * the cache exceeds the given size, cleanup will be attempted. Cannot be set lower than 1MB.
+ *
+ * Set to kFIRFirestoreCacheSizeUnlimited to disable garbage collection entirely.
+ */
+@property(nonatomic, assign) int64_t cacheSizeBytes;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSource.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSource.h
new file mode 100644
index 0000000..16a65cc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRFirestoreSource.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/**
+ * An enum that configures the behavior of `DocumentReference.getDocument()` and
+ * `Query.getDocuments()`.  By providing a source enum the `getDocument[s]`
+ * methods can be configured to fetch results only from the server, only from
+ * the local cache, or attempt to fetch results from the server and fall back to
+ * the cache (which is the default).
+ */
+typedef NS_ENUM(NSUInteger, FIRFirestoreSource) {
+
+  /**
+   * Causes Firestore to try to retrieve an up-to-date (server-retrieved)
+   * snapshot, but fall back to returning cached data if the server can't be
+   * reached.
+   */
+  FIRFirestoreSourceDefault,
+
+  /**
+   * Causes Firestore to avoid the cache, generating an error if the server
+   * cannot be reached. Note that the cache will still be updated if the
+   * server request succeeds. Also note that latency-compensation still takes
+   * effect, so any pending write operations will be visible in the returned
+   * data (merged into the server-provided data).
+   */
+  FIRFirestoreSourceServer,
+
+  /**
+   * Causes Firestore to immediately return a value from the cache, ignoring
+   * the server completely (implying that the returned value may be stale with
+   * respect to the value on the server). If there is no data in the cache to
+   * satisfy the `getDocument[s]` call, `DocumentReference.getDocument()` will
+   * return an error and `QuerySnapshot.getDocuments()` will return an empty
+   * `QuerySnapshot` with no documents.
+   */
+  FIRFirestoreSourceCache
+} NS_SWIFT_NAME(FirestoreSource);
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRGeoPoint.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRGeoPoint.h
new file mode 100644
index 0000000..4454225
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRGeoPoint.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * An immutable object representing a geographical point in Firestore. The point is represented as
+ * a latitude/longitude pair.
+ *
+ * Latitude values are in the range of [-90, 90].
+ * Longitude values are in the range of [-180, 180].
+ */
+NS_SWIFT_NAME(GeoPoint)
+@interface FIRGeoPoint : NSObject <NSCopying>
+
+/** :nodoc: */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Creates a `GeoPoint` from the provided latitude and longitude degrees.
+ * @param latitude The latitude as number between -90 and 90.
+ * @param longitude The longitude as number between -180 and 180.
+ */
+- (instancetype)initWithLatitude:(double)latitude
+                       longitude:(double)longitude NS_DESIGNATED_INITIALIZER;
+
+/**
+ * The point's latitude. Must be a value between -90 and 90 (inclusive).
+ */
+@property(nonatomic, readonly) double latitude;
+
+/**
+ * The point's longitude. Must be a value between -180 and 180 (inclusive).
+ */
+@property(nonatomic, readonly) double longitude;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRListenerRegistration.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRListenerRegistration.h
new file mode 100644
index 0000000..c3a16cd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRListenerRegistration.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Represents a listener that can be removed by calling remove. */
+NS_SWIFT_NAME(ListenerRegistration)
+@protocol FIRListenerRegistration <NSObject>
+
+/**
+ * Removes the listener being tracked by this FIRListenerRegistration. After the initial call,
+ * subsequent calls have no effect.
+ */
+- (void)remove;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRLoadBundleTask.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRLoadBundleTask.h
new file mode 100644
index 0000000..b2fee2e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRLoadBundleTask.h	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Represents the state of bundle loading tasks.
+ *
+ * Both `FIRLoadBundleTaskStateError` and `FIRLoadBundleTaskStateSuccess` are final states: task
+ * will be in either aborted or completed state and there will be no more updates after they are
+ * reported.
+ */
+typedef NS_ENUM(NSInteger, FIRLoadBundleTaskState) {
+
+  FIRLoadBundleTaskStateError,
+
+  FIRLoadBundleTaskStateInProgress,
+
+  FIRLoadBundleTaskStateSuccess,
+
+} NS_SWIFT_NAME(LoadBundleTaskState);
+
+/** Represents a progress update or a final state from loading bundles. */
+NS_SWIFT_NAME(LoadBundleTaskProgress)
+@interface FIRLoadBundleTaskProgress : NSObject
+
+/** How many documents have been loaded. */
+@property(readonly, nonatomic) NSInteger documentsLoaded;
+
+/** The total number of documents in the bundle. 0 if the bundle failed to parse. */
+@property(readonly, nonatomic) NSInteger totalDocuments;
+
+/** How many bytes have been loaded. */
+@property(readonly, nonatomic) NSInteger bytesLoaded;
+
+/** The total number of bytes in the bundle. 0 if the bundle failed to parse. */
+@property(readonly, nonatomic) NSInteger totalBytes;
+
+/** The current state of `FIRLoadBundleTask` (`LoadBundleTask` in Swift). */
+@property(readonly, nonatomic) FIRLoadBundleTaskState state;
+
+@end
+
+/** A handle associated with registered observers that can be used to remove them. */
+typedef NSInteger FIRLoadBundleObserverHandle NS_SWIFT_NAME(LoadBundleObserverHandle);
+
+/**
+ * Represents the task of loading a Firestore bundle. Observers can be registered with this task to
+ * observe the bundle loading progress, as well as task completion and error events.
+ */
+NS_SWIFT_NAME(LoadBundleTask)
+@interface FIRLoadBundleTask : NSObject
+
+/**
+ * Registers an observer to observe the progress updates, completion or error events.
+ *
+ * @return A handle to the registered observer which can be used to remove the observer once it is
+ * no longer needed.
+ */
+- (FIRLoadBundleObserverHandle)addObserver:(void (^)(FIRLoadBundleTaskProgress *progress))observer
+    NS_SWIFT_NAME(addObserver(_:));
+
+/**
+ * Removes a registered observer associated with the given handle. If no observer can be found, this
+ * will be a no-op.
+ */
+- (void)removeObserverWithHandle:(FIRLoadBundleObserverHandle)handle
+    NS_SWIFT_NAME(removeObserverWith(handle:));
+
+/**
+ * Removes all registered observers for this task.
+ */
+- (void)removeAllObservers NS_SWIFT_NAME(removeAllObservers());
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuery.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuery.h
new file mode 100644
index 0000000..5144df2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuery.h	
@@ -0,0 +1,545 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRFirestoreSource.h"
+#import "FIRListenerRegistration.h"
+
+@class FIRFieldPath;
+@class FIRFirestore;
+@class FIRQuerySnapshot;
+@class FIRDocumentSnapshot;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * A block type used to handle failable snapshot method callbacks.
+ */
+typedef void (^FIRQuerySnapshotBlock)(FIRQuerySnapshot *_Nullable snapshot,
+                                      NSError *_Nullable error);
+
+/**
+ * A `FIRQuery` refers to a Query which you can read or listen to. You can also construct
+ * refined `FIRQuery` objects by adding filters and ordering.
+ */
+NS_SWIFT_NAME(Query)
+@interface FIRQuery : NSObject
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRQuery cannot be created directly.")));
+
+/** The `FIRFirestore` for the Firestore database (useful for performing transactions, etc.). */
+@property(nonatomic, strong, readonly) FIRFirestore *firestore;
+
+#pragma mark - Retrieving Data
+/**
+ * Reads the documents matching this query.
+ *
+ * This method attempts to provide up-to-date data when possible by waiting for
+ * data from the server, but it may return cached data or fail if you are
+ * offline and the server cannot be reached. See the
+ * `getDocuments(source:completion:)` method to change this behavior.
+ *
+ * @param completion a block to execute once the documents have been successfully read.
+ *     documentSet will be `nil` only if error is `non-nil`.
+ */
+- (void)getDocumentsWithCompletion:(FIRQuerySnapshotBlock)completion
+    NS_SWIFT_NAME(getDocuments(completion:));
+
+/**
+ * Reads the documents matching this query.
+ *
+ * @param source indicates whether the results should be fetched from the cache
+ *     only (`Source.cache`), the server only (`Source.server`), or to attempt
+ *     the server and fall back to the cache (`Source.default`).
+ * @param completion a block to execute once the documents have been successfully read.
+ *     documentSet will be `nil` only if error is `non-nil`.
+ */
+- (void)getDocumentsWithSource:(FIRFirestoreSource)source
+                    completion:(FIRQuerySnapshotBlock)completion
+    NS_SWIFT_NAME(getDocuments(source:completion:));
+
+/**
+ * Attaches a listener for QuerySnapshot events.
+ *
+ * @param listener The listener to attach.
+ *
+ * @return A FIRListenerRegistration that can be used to remove this listener.
+ */
+- (id<FIRListenerRegistration>)addSnapshotListener:(FIRQuerySnapshotBlock)listener
+    NS_SWIFT_NAME(addSnapshotListener(_:));
+
+/**
+ * Attaches a listener for QuerySnapshot events.
+ *
+ * @param includeMetadataChanges Whether metadata-only changes (i.e. only
+ *     `FIRDocumentSnapshot.metadata` changed) should trigger snapshot events.
+ * @param listener The listener to attach.
+ *
+ * @return A FIRListenerRegistration that can be used to remove this listener.
+ */
+- (id<FIRListenerRegistration>)
+    addSnapshotListenerWithIncludeMetadataChanges:(BOOL)includeMetadataChanges
+                                         listener:(FIRQuerySnapshotBlock)listener
+    NS_SWIFT_NAME(addSnapshotListener(includeMetadataChanges:listener:));
+
+#pragma mark - Filtering Data
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be equal to the specified value.
+ *
+ * @param field The name of the field to compare.
+ * @param value The value the field must be equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                    isEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value does not equal the specified value.
+ *
+ * @param path The path of the field to compare.
+ * @param value The value the field must be equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                     isNotEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isNotEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value does not equal the specified value.
+ *
+ * @param field The name of the field to compare.
+ * @param value The value the field must be equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                 isNotEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isNotEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be equal to the specified value.
+ *
+ * @param path The path of the field to compare.
+ * @param value The value the field must be equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                        isEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be less than the specified value.
+ *
+ * @param field The name of the field to compare.
+ * @param value The value the field must be less than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                   isLessThan:(id)value NS_SWIFT_NAME(whereField(_:isLessThan:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be less than the specified value.
+ *
+ * @param path The path of the field to compare.
+ * @param value The value the field must be less than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                       isLessThan:(id)value NS_SWIFT_NAME(whereField(_:isLessThan:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be less than or equal to the specified value.
+ *
+ * @param field The name of the field to compare
+ * @param value The value the field must be less than or equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+          isLessThanOrEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isLessThanOrEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be less than or equal to the specified value.
+ *
+ * @param path The path of the field to compare
+ * @param value The value the field must be less than or equal to.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+              isLessThanOrEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isLessThanOrEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must greater than the specified value.
+ *
+ * @param field The name of the field to compare
+ * @param value The value the field must be greater than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                isGreaterThan:(id)value NS_SWIFT_NAME(whereField(_:isGreaterThan:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must greater than the specified value.
+ *
+ * @param path The path of the field to compare
+ * @param value The value the field must be greater than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                    isGreaterThan:(id)value NS_SWIFT_NAME(whereField(_:isGreaterThan:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be greater than or equal to the specified value.
+ *
+ * @param field The name of the field to compare
+ * @param value The value the field must be greater than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+       isGreaterThanOrEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isGreaterThanOrEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * contain the specified field and the value must be greater than or equal to the specified value.
+ *
+ * @param path The path of the field to compare
+ * @param value The value the field must be greater than.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+           isGreaterThanOrEqualTo:(id)value NS_SWIFT_NAME(whereField(_:isGreaterThanOrEqualTo:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field, it must be an array, and the array must contain the provided value.
+ *
+ * A query can have only one arrayContains filter.
+ *
+ * @param field The name of the field containing an array to search
+ * @param value The value that must be contained in the array
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                arrayContains:(id)value NS_SWIFT_NAME(whereField(_:arrayContains:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field, it must be an array, and the array must contain the provided value.
+ *
+ * A query can have only one arrayContains filter.
+ *
+ * @param path The path of the field containing an array to search
+ * @param value The value that must be contained in the array
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                    arrayContains:(id)value NS_SWIFT_NAME(whereField(_:arrayContains:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field, the value must be an array, and that array must contain at least one value
+ * from the provided array.
+ *
+ * A query can have only one `arrayContainsAny` filter and it cannot be combined with
+ * `arrayContains` or `in` filters.
+ *
+ * @param field The name of the field containing an array to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+             arrayContainsAny:(NSArray<id> *)values
+    NS_SWIFT_NAME(whereField(_:arrayContainsAny:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field, the value must be an array, and that array must contain at least one value
+ * from the provided array.
+ *
+ * A query can have only one `arrayContainsAny` filter and it cannot be combined with
+ * `arrayContains` or `in` filters.
+ *
+ * @param path The path of the field containing an array to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                 arrayContainsAny:(NSArray<id> *)values
+    NS_SWIFT_NAME(whereField(_:arrayContainsAny:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field and the value must equal one of the values from the provided array.
+ *
+ * A query can have only one `in` filter, and it cannot be combined with an `arrayContainsAny`
+ * filter.
+ *
+ * @param field The name of the field to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                           in:(NSArray<id> *)values NS_SWIFT_NAME(whereField(_:in:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field and the value must equal one of the values from the provided array.
+ *
+ * A query can have only one `in` filter, and it cannot be combined with an `arrayContainsAny`
+ * filter.
+ *
+ * @param path The path of the field to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                               in:(NSArray<id> *)values NS_SWIFT_NAME(whereField(_:in:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field and the value does not equal any of the values from the provided array.
+ *
+ * One special case is that `notIn` filters cannot match `nil` values. To query for documents
+ * where a field exists and is `nil`, use a `notEqual` filter, which can handle this special case.
+ *
+ * A query can have only one `notIn` filter, and it cannot be combined with an `arrayContains`,
+ * `arrayContainsAny`, `in`, or `notEqual` filter.
+ *
+ * @param field The name of the field to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereField:(NSString *)field
+                        notIn:(NSArray<id> *)values NS_SWIFT_NAME(whereField(_:notIn:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must contain
+ * the specified field and the value does not equal any of the values from the provided array.
+ *
+ * One special case is that `notIn` filters cannot match `nil` values. To query for documents
+ * where a field exists and is `nil`, use a `notEqual` filter, which can handle this special case.
+ *
+ * Passing in a `null` value into the `values` array results in no document matches. To query
+ * for documents where a field is not `null`, use a `notEqual` filter.
+ *
+ * @param path The path of the field to search.
+ * @param values The array that contains the values to match.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryWhereFieldPath:(FIRFieldPath *)path
+                            notIn:(NSArray<id> *)values NS_SWIFT_NAME(whereField(_:notIn:));
+
+/**
+ * Creates and returns a new `FIRQuery` with the additional filter that documents must
+ * satisfy the specified predicate.
+ *
+ * @param predicate The predicate the document must satisfy. Can be either comparison
+ *     or compound of comparison. In particular, block-based predicate is not supported.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryFilteredUsingPredicate:(NSPredicate *)predicate NS_SWIFT_NAME(filter(using:));
+
+#pragma mark - Sorting Data
+/**
+ * Creates and returns a new `FIRQuery` that's additionally sorted by the specified field.
+ *
+ * @param field The field to sort by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryOrderedByField:(NSString *)field NS_SWIFT_NAME(order(by:));
+
+/**
+ * Creates and returns a new `FIRQuery` that's additionally sorted by the specified field.
+ *
+ * @param path The field to sort by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryOrderedByFieldPath:(FIRFieldPath *)path NS_SWIFT_NAME(order(by:));
+
+/**
+ * Creates and returns a new `FIRQuery` that's additionally sorted by the specified field,
+ * optionally in descending order instead of ascending.
+ *
+ * @param field The field to sort by.
+ * @param descending Whether to sort descending.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryOrderedByField:(NSString *)field
+                       descending:(BOOL)descending NS_SWIFT_NAME(order(by:descending:));
+
+/**
+ * Creates and returns a new `FIRQuery` that's additionally sorted by the specified field,
+ * optionally in descending order instead of ascending.
+ *
+ * @param path The field to sort by.
+ * @param descending Whether to sort descending.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryOrderedByFieldPath:(FIRFieldPath *)path
+                           descending:(BOOL)descending NS_SWIFT_NAME(order(by:descending:));
+
+#pragma mark - Limiting Data
+/**
+ * Creates and returns a new `FIRQuery` that only returns the first matching documents up to
+ * the specified number.
+ *
+ * @param limit The maximum number of items to return.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryLimitedTo:(NSInteger)limit NS_SWIFT_NAME(limit(to:));
+
+/**
+ * Creates and returns a new `FIRQuery` that only returns the last matching documents up to
+ * the specified number.
+ *
+ * A query with a `limit(ToLast:)` clause must have at least one `orderBy` clause.
+ *
+ * @param limit The maximum number of items to return.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryLimitedToLast:(NSInteger)limit NS_SWIFT_NAME(limit(toLast:));
+
+#pragma mark - Choosing Endpoints
+/**
+ * Creates and returns a new `FIRQuery` that starts at the provided document (inclusive). The
+ * starting position is relative to the order of the query. The document must contain all of the
+ * fields provided in the orderBy of this query.
+ *
+ * @param document The snapshot of the document to start at.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryStartingAtDocument:(FIRDocumentSnapshot *)document
+    NS_SWIFT_NAME(start(atDocument:));
+
+/**
+ * Creates and returns a new `FIRQuery` that starts at the provided fields relative to the order of
+ * the query. The order of the field values must match the order of the order by clauses of the
+ * query.
+ *
+ * @param fieldValues The field values to start this query at, in order of the query's order by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryStartingAtValues:(NSArray *)fieldValues NS_SWIFT_NAME(start(at:));
+
+/**
+ * Creates and returns a new `FIRQuery` that starts after the provided document (exclusive). The
+ * starting position is relative to the order of the query. The document must contain all of the
+ * fields provided in the orderBy of this query.
+ *
+ * @param document The snapshot of the document to start after.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryStartingAfterDocument:(FIRDocumentSnapshot *)document
+    NS_SWIFT_NAME(start(afterDocument:));
+
+/**
+ * Creates and returns a new `FIRQuery` that starts after the provided fields relative to the order
+ * of the query. The order of the field values must match the order of the order by clauses of the
+ * query.
+ *
+ * @param fieldValues The field values to start this query after, in order of the query's order
+ *     by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryStartingAfterValues:(NSArray *)fieldValues NS_SWIFT_NAME(start(after:));
+
+/**
+ * Creates and returns a new `FIRQuery` that ends before the provided document (exclusive). The end
+ * position is relative to the order of the query. The document must contain all of the fields
+ * provided in the orderBy of this query.
+ *
+ * @param document The snapshot of the document to end before.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryEndingBeforeDocument:(FIRDocumentSnapshot *)document
+    NS_SWIFT_NAME(end(beforeDocument:));
+
+/**
+ * Creates and returns a new `FIRQuery` that ends before the provided fields relative to the order
+ * of the query. The order of the field values must match the order of the order by clauses of the
+ * query.
+ *
+ * @param fieldValues The field values to end this query before, in order of the query's order by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryEndingBeforeValues:(NSArray *)fieldValues NS_SWIFT_NAME(end(before:));
+
+/**
+ * Creates and returns a new `FIRQuery` that ends at the provided document (exclusive). The end
+ * position is relative to the order of the query. The document must contain all of the fields
+ * provided in the orderBy of this query.
+ *
+ * @param document The snapshot of the document to end at.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryEndingAtDocument:(FIRDocumentSnapshot *)document
+    NS_SWIFT_NAME(end(atDocument:));
+
+/**
+ * Creates and returns a new `FIRQuery` that ends at the provided fields relative to the order of
+ * the query. The order of the field values must match the order of the order by clauses of the
+ * query.
+ *
+ * @param fieldValues The field values to end this query at, in order of the query's order by.
+ *
+ * @return The created `FIRQuery`.
+ */
+- (FIRQuery *)queryEndingAtValues:(NSArray *)fieldValues NS_SWIFT_NAME(end(at:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuerySnapshot.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuerySnapshot.h
new file mode 100644
index 0000000..268598f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRQuerySnapshot.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRDocumentChange;
+@class FIRQuery;
+@class FIRQueryDocumentSnapshot;
+@class FIRSnapshotMetadata;
+
+/**
+ * A `FIRQuerySnapshot` contains zero or more `FIRDocumentSnapshot` objects. It can be enumerated
+ * using "for ... in documentSet.documents" and its size can be inspected with `isEmpty` and
+ * `count`.
+ */
+NS_SWIFT_NAME(QuerySnapshot)
+@interface FIRQuerySnapshot : NSObject
+
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRQuerySnapshot cannot be created directly.")));
+
+/**
+ * The query on which you called `getDocuments` or listened to in order to get this
+ * `FIRQuerySnapshot`.
+ */
+@property(nonatomic, strong, readonly) FIRQuery *query;
+
+/** Metadata about this snapshot, concerning its source and if it has local modifications. */
+@property(nonatomic, strong, readonly) FIRSnapshotMetadata *metadata;
+
+/** Indicates whether this `FIRQuerySnapshot` is empty (contains no documents). */
+@property(nonatomic, readonly, getter=isEmpty) BOOL empty;
+
+/** The count of documents in this `FIRQuerySnapshot`. */
+@property(nonatomic, readonly) NSInteger count;
+
+/** An Array of the `FIRDocumentSnapshots` that make up this document set. */
+@property(nonatomic, strong, readonly) NSArray<FIRQueryDocumentSnapshot *> *documents;
+
+/**
+ * An array of the documents that changed since the last snapshot. If this is the first snapshot,
+ * all documents will be in the list as Added changes.
+ */
+@property(nonatomic, strong, readonly) NSArray<FIRDocumentChange *> *documentChanges;
+
+/**
+ * Returns an array of the documents that changed since the last snapshot. If this is the first
+ * snapshot, all documents will be in the list as Added changes.
+ *
+ * @param includeMetadataChanges Whether metadata-only changes (i.e. only
+ *     `FIRDocumentSnapshot.metadata` changed) should be included.
+ */
+- (NSArray<FIRDocumentChange *> *)documentChangesWithIncludeMetadataChanges:
+    (BOOL)includeMetadataChanges NS_SWIFT_NAME(documentChanges(includeMetadataChanges:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRSnapshotMetadata.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRSnapshotMetadata.h
new file mode 100644
index 0000000..043d819
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRSnapshotMetadata.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Metadata about a snapshot, describing the state of the snapshot. */
+NS_SWIFT_NAME(SnapshotMetadata)
+@interface FIRSnapshotMetadata : NSObject
+
+/** :nodoc: */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Returns YES if the snapshot contains the result of local writes (e.g. set() or update() calls)
+ * that have not yet been committed to the backend. If your listener has opted into metadata updates
+ * (via `includeMetadataChanges:YES`) you will receive another snapshot with `hasPendingWrites`
+ * equal to NO once the writes have been committed to the backend.
+ */
+@property(nonatomic, assign, readonly, getter=hasPendingWrites) BOOL pendingWrites;
+
+/**
+ * Returns YES if the snapshot was created from cached data rather than guaranteed up-to-date server
+ * data. If your listener has opted into metadata updates (via `includeMetadataChanges:YES`) you
+ * will receive another snapshot with `isFromCache` equal to NO once the client has received
+ * up-to-date data from the backend.
+ */
+@property(nonatomic, assign, readonly, getter=isFromCache) BOOL fromCache;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTimestamp.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTimestamp.h
new file mode 100644
index 0000000..967d47c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTimestamp.h	
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * A Timestamp represents a point in time independent of any time zone or calendar, represented as
+ * seconds and fractions of seconds at nanosecond resolution in UTC Epoch time. It is encoded using
+ * the Proleptic Gregorian Calendar which extends the Gregorian calendar backwards to year one. It
+ * is encoded assuming all minutes are 60 seconds long, i.e. leap seconds are "smeared" so that no
+ * leap second table is needed for interpretation. Range is from 0001-01-01T00:00:00Z to
+ * 9999-12-31T23:59:59.999999999Z. By restricting to that range, we ensure that we can convert to
+ * and from  RFC 3339 date strings.
+ *
+ * @see https://github.com/google/protobuf/blob/master/src/google/protobuf/timestamp.proto for the
+ * reference timestamp definition.
+ */
+NS_SWIFT_NAME(Timestamp)
+@interface FIRTimestamp : NSObject <NSCopying>
+
+/** :nodoc: */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Creates a new timestamp.
+ *
+ * @param seconds the number of seconds since epoch.
+ * @param nanoseconds the number of nanoseconds after the seconds.
+ */
+- (instancetype)initWithSeconds:(int64_t)seconds
+                    nanoseconds:(int32_t)nanoseconds NS_DESIGNATED_INITIALIZER;
+
+/**
+ * Creates a new timestamp.
+ *
+ * @param seconds the number of seconds since epoch.
+ * @param nanoseconds the number of nanoseconds after the seconds.
+ */
++ (instancetype)timestampWithSeconds:(int64_t)seconds nanoseconds:(int32_t)nanoseconds;
+
+/** Creates a new timestamp from the given date. */
++ (instancetype)timestampWithDate:(NSDate *)date;
+
+/** Creates a new timestamp with the current date / time. */
++ (instancetype)timestamp;
+
+/** Returns a new NSDate corresponding to this timestamp. This may lose precision. */
+- (NSDate *)dateValue;
+
+/**
+ * Returns the result of comparing the receiver with another timestamp.
+ * @param other the other timestamp to compare.
+ * @return NSOrderedAscending if `other` is chronologically following self,
+ *     NSOrderedDescending if `other` is chronologically preceding self,
+ *     NSOrderedSame otherwise.
+ */
+- (NSComparisonResult)compare:(FIRTimestamp *)other;
+
+/**
+ * Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z.
+ * Must be from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z inclusive.
+ */
+@property(nonatomic, assign, readonly) int64_t seconds;
+
+/**
+ * Non-negative fractions of a second at nanosecond resolution. Negative second values with
+ * fractions must still have non-negative nanos values that count forward in time.
+ * Must be from 0 to 999,999,999 inclusive.
+ */
+@property(nonatomic, assign, readonly) int32_t nanoseconds;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTransaction.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTransaction.h
new file mode 100644
index 0000000..ede0fb9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRTransaction.h	
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRDocumentReference;
+@class FIRDocumentSnapshot;
+
+/**
+ * `FIRTransaction` provides methods to read and write data within a transaction.
+ *
+ * @see FIRFirestore#transaction:completion:
+ */
+NS_SWIFT_NAME(Transaction)
+@interface FIRTransaction : NSObject
+
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRTransaction cannot be created directly.")));
+
+/**
+ * Writes to the document referred to by `document`. If the document doesn't yet exist,
+ * this method creates it and then sets the data. If the document exists, this method overwrites
+ * the document data with the new values.
+ *
+ * @param data An `NSDictionary` that contains the fields and data to write to the document.
+ * @param document A reference to the document whose data should be overwritten.
+ * @return This `FIRTransaction` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document
+    NS_SWIFT_NAME(setData(_:forDocument:));
+// clang-format on
+
+/**
+ * Writes to the document referred to by `document`. If the document doesn't yet exist,
+ * this method creates it and then sets the data. If you pass `merge:YES`, the provided data will be
+ * merged into any existing document.
+ *
+ * @param data An `NSDictionary` that contains the fields and data to write to the document.
+ * @param document A reference to the document whose data should be overwritten.
+ * @param merge Whether to merge the provided data into any existing document.
+ * @return This `FIRTransaction` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document
+                      merge:(BOOL)merge
+    NS_SWIFT_NAME(setData(_:forDocument:merge:));
+// clang-format on
+
+/**
+ * Writes to the document referred to by `document` and only replace the fields
+ * specified under `mergeFields`. Any field that is not specified in `mergeFields`
+ * is ignored and remains untouched. If the document doesn't yet exist,
+ * this method creates it and then sets the data.
+ *
+ * It is an error to include a field in `mergeFields` that does not have a corresponding
+ * value in the `data` dictionary.
+ *
+ * @param data An `NSDictionary` containing the fields that make up the document
+ * to be written.
+ * @param document A reference to the document whose data should be overwritten.
+ * @param mergeFields An `NSArray` that contains a list of `NSString` or `FIRFieldPath` elements
+ *     specifying which fields to merge. Fields can contain dots to reference nested fields within
+ *     the document.
+ * @return This `FIRTransaction` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
+                forDocument:(FIRDocumentReference *)document
+                mergeFields:(NSArray<id> *)mergeFields
+    NS_SWIFT_NAME(setData(_:forDocument:mergeFields:));
+// clang-format on
+
+/**
+ * Updates fields in the document referred to by `document`.
+ * If the document does not exist, the transaction will fail.
+ *
+ * @param fields An `NSDictionary` containing the fields (expressed as an `NSString` or
+ * `FIRFieldPath`) and values with which to update the document.
+ * @param document A reference to the document whose data should be updated.
+ * @return This `FIRTransaction` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRTransaction *)updateData:(NSDictionary<id, id> *)fields
+                   forDocument:(FIRDocumentReference *)document
+    NS_SWIFT_NAME(updateData(_:forDocument:));
+// clang-format on
+
+/**
+ * Deletes the document referred to by `document`.
+ *
+ * @param document A reference to the document that should be deleted.
+ * @return This `FIRTransaction` instance. Used for chaining method calls.
+ */
+- (FIRTransaction *)deleteDocument:(FIRDocumentReference *)document
+    NS_SWIFT_NAME(deleteDocument(_:));
+
+/**
+ * Reads the document referenced by `document`.
+ *
+ * @param document A reference to the document to be read.
+ * @param error An out parameter to capture an error, if one occurred.
+ */
+- (FIRDocumentSnapshot *_Nullable)getDocument:(FIRDocumentReference *)document
+                                        error:(NSError *__autoreleasing *)error
+    NS_SWIFT_NAME(getDocument(_:));
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRWriteBatch.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRWriteBatch.h
new file mode 100644
index 0000000..22d1b16
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FIRWriteBatch.h	
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRDocumentReference;
+
+/**
+ * A write batch is used to perform multiple writes as a single atomic unit.
+ *
+ * A WriteBatch object can be acquired by calling [FIRFirestore batch]. It provides methods for
+ * adding writes to the write batch. None of the writes will be committed (or visible locally)
+ * until [FIRWriteBatch commit] is called.
+ *
+ * Unlike transactions, write batches are persisted offline and therefore are preferable when you
+ * don't need to condition your writes on read data.
+ */
+NS_SWIFT_NAME(WriteBatch)
+@interface FIRWriteBatch : NSObject
+
+/** :nodoc: */
+- (id)init __attribute__((unavailable("FIRWriteBatch cannot be created directly.")));
+
+/**
+ * Writes to the document referred to by `document`. If the document doesn't yet exist,
+ * this method creates it and then sets the data. If the document exists, this method overwrites
+ * the document data with the new values.
+ *
+ * @param data An `NSDictionary` that contains the fields and data to write to the document.
+ * @param document A reference to the document whose data should be overwritten.
+ * @return This `FIRWriteBatch` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document NS_SWIFT_NAME(setData(_:forDocument:));
+// clang-format on
+
+/**
+ * Writes to the document referred to by `document`. If the document doesn't yet exist,
+ * this method creates it and then sets the data. If you pass `merge:YES`, the provided data will be
+ * merged into  any existing document.
+ *
+ * @param data An `NSDictionary` that contains the fields and data to write to the document.
+ * @param document A reference to the document whose data should be overwritten.
+ * @param merge Whether to merge the provided data into any existing document.
+ * @return This `FIRWriteBatch` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document
+                     merge:(BOOL)merge
+    NS_SWIFT_NAME(setData(_:forDocument:merge:));
+// clang-format on
+
+/**
+ * Writes to the document referred to by `document` and only replace the fields
+ * specified under `mergeFields`. Any field that is not specified in `mergeFields`
+ * is ignored and remains untouched. If the document doesn't yet exist,
+ * this method creates it and then sets the data.
+ *
+ * It is an error to include a field in `mergeFields` that does not have a corresponding
+ * value in the `data` dictionary.
+ *
+ * @param data An `NSDictionary` that contains the fields and data to write to the document.
+ * @param document A reference to the document whose data should be overwritten.
+ * @param mergeFields An `NSArray` that contains a list of `NSString` or `FIRFieldPath` elements
+ *     specifying which fields to merge. Fields can contain dots to reference nested fields within
+ *     the document.
+ * @return This `FIRWriteBatch` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRWriteBatch *)setData:(NSDictionary<NSString *, id> *)data
+               forDocument:(FIRDocumentReference *)document
+               mergeFields:(NSArray<id> *)mergeFields
+   NS_SWIFT_NAME(setData(_:forDocument:mergeFields:));
+// clang-format on
+
+/**
+ * Updates fields in the document referred to by `document`.
+ * If document does not exist, the write batch will fail.
+ *
+ * @param fields An `NSDictionary` containing the fields (expressed as an `NSString` or
+ *     `FIRFieldPath`) and values with which to update the document.
+ * @param document A reference to the document whose data should be updated.
+ * @return This `FIRWriteBatch` instance. Used for chaining method calls.
+ */
+// clang-format off
+- (FIRWriteBatch *)updateData:(NSDictionary<id, id> *)fields
+                  forDocument:(FIRDocumentReference *)document
+    NS_SWIFT_NAME(updateData(_:forDocument:));
+// clang-format on
+
+/**
+ * Deletes the document referred to by `document`.
+ *
+ * @param document A reference to the document that should be deleted.
+ * @return This `FIRWriteBatch` instance. Used for chaining method calls.
+ */
+- (FIRWriteBatch *)deleteDocument:(FIRDocumentReference *)document
+    NS_SWIFT_NAME(deleteDocument(_:));
+
+/**
+ * Commits all of the writes in this write batch as a single atomic unit.
+ */
+- (void)commit;
+
+/**
+ * Commits all of the writes in this write batch as a single atomic unit.
+ *
+ * @param completion A block to be called once all of the writes in the batch have been
+ *     successfully written to the backend as an atomic unit. This block will only execute
+ *     when the client is online and the commit has completed against the server. The
+ *     completion handler will not be called when the device is offline, though local
+ *     changes will be visible immediately.
+ */
+- (void)commitWithCompletion:(nullable void (^)(NSError *_Nullable error))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h
new file mode 100644
index 0000000..02edf17
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/Source/Public/FirebaseFirestore/FirebaseFirestore.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRCollectionReference.h"
+#import "FIRDocumentChange.h"
+#import "FIRDocumentReference.h"
+#import "FIRDocumentSnapshot.h"
+#import "FIRFieldPath.h"
+#import "FIRFieldValue.h"
+#import "FIRFirestore.h"
+#import "FIRFirestoreErrors.h"
+#import "FIRFirestoreSettings.h"
+#import "FIRGeoPoint.h"
+#import "FIRListenerRegistration.h"
+#import "FIRLoadBundleTask.h"
+#import "FIRQuery.h"
+#import "FIRQuerySnapshot.h"
+#import "FIRSnapshotMetadata.h"
+#import "FIRTimestamp.h"
+#import "FIRTransaction.h"
+#import "FIRWriteBatch.h"
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_errors.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_errors.h
new file mode 100644
index 0000000..6af214a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_errors.h	
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_ERRORS_H_
+#define FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_ERRORS_H_
+
+namespace firebase {
+namespace firestore {
+
+/**
+ * Error codes used by Cloud Firestore.
+ *
+ * The codes are in sync across Firestore SDKs on various platforms.
+ */
+enum Error {
+  /** The operation completed successfully. */
+  // Note: NSError objects will never have a code with this value.
+  kErrorOk = 0,
+
+  kErrorNone = 0,
+
+  /** The operation was cancelled (typically by the caller). */
+  kErrorCancelled = 1,
+
+  /** Unknown error or an error from a different error domain. */
+  kErrorUnknown = 2,
+
+  /**
+   * Client specified an invalid argument. Note that this differs from
+   * FailedPrecondition. InvalidArgument indicates arguments that are
+   * problematic regardless of the state of the system (e.g., an invalid field
+   * name).
+   */
+  kErrorInvalidArgument = 3,
+
+  /**
+   * Deadline expired before operation could complete. For operations that
+   * change the state of the system, this error may be returned even if the
+   * operation has completed successfully. For example, a successful response
+   * from a server could have been delayed long enough for the deadline to
+   * expire.
+   */
+  kErrorDeadlineExceeded = 4,
+
+  /** Some requested document was not found. */
+  kErrorNotFound = 5,
+
+  /** Some document that we attempted to create already exists. */
+  kErrorAlreadyExists = 6,
+
+  /** The caller does not have permission to execute the specified operation. */
+  kErrorPermissionDenied = 7,
+
+  /**
+   * Some resource has been exhausted, perhaps a per-user quota, or perhaps the
+   * entire file system is out of space.
+   */
+  kErrorResourceExhausted = 8,
+
+  /**
+   * Operation was rejected because the system is not in a state required for
+   * the operation's execution.
+   */
+  kErrorFailedPrecondition = 9,
+
+  /**
+   * The operation was aborted, typically due to a concurrency issue like
+   * transaction aborts, etc.
+   */
+  kErrorAborted = 10,
+
+  /** Operation was attempted past the valid range. */
+  kErrorOutOfRange = 11,
+
+  /** Operation is not implemented or not supported/enabled. */
+  kErrorUnimplemented = 12,
+
+  /**
+   * Internal errors. Means some invariants expected by underlying system has
+   * been broken. If you see one of these errors, something is very broken.
+   */
+  kErrorInternal = 13,
+
+  /**
+   * The service is currently unavailable. This is a most likely a transient
+   * condition and may be corrected by retrying with a backoff.
+   */
+  kErrorUnavailable = 14,
+
+  /** Unrecoverable data loss or corruption. */
+  kErrorDataLoss = 15,
+
+  /**
+   * The request does not have valid authentication credentials for the
+   * operation.
+   */
+  kErrorUnauthenticated = 16
+};
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_ERRORS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_version.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_version.h
new file mode 100644
index 0000000..627ead9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/firestore_version.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_VERSION_H_
+#define FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_VERSION_H_
+
+namespace firebase {
+namespace firestore {
+
+/** Version string for the Firebase Firestore SDK. */
+extern const char* const kFirestoreVersionString;
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_FIRESTORE_VERSION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/geo_point.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/geo_point.h
new file mode 100644
index 0000000..ac56e74
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/geo_point.h	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_GEO_POINT_H_
+#define FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_GEO_POINT_H_
+
+#include <iosfwd>
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+/**
+ * An immutable object representing a geographical point in Firestore. The point
+ * is represented as a latitude/longitude pair.
+ *
+ * Latitude values are in the range of [-90, 90].
+ * Longitude values are in the range of [-180, 180].
+ */
+class GeoPoint {
+ public:
+  /** Creates a `GeoPoint` with both latitude and longitude set to 0. */
+  GeoPoint() = default;
+
+  /**
+   * Creates a `GeoPoint` from the provided latitude and longitude values.
+   *
+   * @param latitude The latitude as number of degrees between -90 and 90.
+   * @param longitude The longitude as number of degrees between -180 and 180.
+   */
+  GeoPoint(double latitude, double longitude);
+
+  /** Copy constructor, `GeoPoint` is trivially copyable. */
+  GeoPoint(const GeoPoint& other) = default;
+
+  /** Move constructor, equivalent to copying. */
+  GeoPoint(GeoPoint&& other) = default;
+
+  /** Copy assignment operator, `GeoPoint` is trivially copyable. */
+  GeoPoint& operator=(const GeoPoint& other) = default;
+
+  /** Move assignment operator, equivalent to copying. */
+  GeoPoint& operator=(GeoPoint&& other) = default;
+
+  /** Returns the latitude value of this `GeoPoint`. */
+  double latitude() const {
+    return latitude_;
+  }
+
+  /** Returns the latitude value of this `GeoPoint`. */
+  double longitude() const {
+    return longitude_;
+  }
+
+  /**
+   * Returns a string representation of this `GeoPoint` for logging/debugging
+   * purposes.
+   *
+   * @note: the exact string representation is unspecified and subject to
+   * change; don't rely on the format of the string.
+   */
+  std::string ToString() const;
+
+  /**
+   * Outputs the string representation of this `GeoPoint` to the given stream.
+   *
+   * @see `ToString()` for comments on the representation format.
+   */
+  friend std::ostream& operator<<(std::ostream& out, const GeoPoint& geo_point);
+
+ private:
+  double latitude_ = 0.0;
+  double longitude_ = 0.0;
+};
+
+/** Checks whether `lhs` and `rhs` are in ascending order. */
+bool operator<(const GeoPoint& lhs, const GeoPoint& rhs);
+
+/** Checks whether `lhs` and `rhs` are in descending order. */
+inline bool operator>(const GeoPoint& lhs, const GeoPoint& rhs) {
+  return rhs < lhs;
+}
+
+/** Checks whether `lhs` and `rhs` are in non-ascending order. */
+inline bool operator>=(const GeoPoint& lhs, const GeoPoint& rhs) {
+  return !(lhs < rhs);
+}
+
+/** Checks whether `lhs` and `rhs` are in non-descending order. */
+inline bool operator<=(const GeoPoint& lhs, const GeoPoint& rhs) {
+  return !(lhs > rhs);
+}
+
+/** Checks `lhs` and `rhs` for inequality. */
+inline bool operator!=(const GeoPoint& lhs, const GeoPoint& rhs) {
+  return lhs < rhs || lhs > rhs;
+}
+
+/** Checks `lhs` and `rhs` for equality. */
+inline bool operator==(const GeoPoint& lhs, const GeoPoint& rhs) {
+  return !(lhs != rhs);
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_GEO_POINT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/timestamp.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/timestamp.h
new file mode 100644
index 0000000..e806bb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/include/firebase/firestore/timestamp.h	
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_TIMESTAMP_H_
+#define FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_TIMESTAMP_H_
+
+#include <cstdint>
+#include <ctime>
+#include <iosfwd>
+#include <string>
+
+#if !defined(_STLPORT_VERSION)
+#include <chrono>  // NOLINT(build/c++11)
+#endif             // !defined(_STLPORT_VERSION)
+
+namespace firebase {
+
+/**
+ * A Timestamp represents a point in time independent of any time zone or
+ * calendar, represented as seconds and fractions of seconds at nanosecond
+ * resolution in UTC Epoch time. It is encoded using the Proleptic Gregorian
+ * Calendar which extends the Gregorian calendar backwards to year one. It is
+ * encoded assuming all minutes are 60 seconds long, i.e. leap seconds are
+ * "smeared" so that no leap second table is needed for interpretation. Range is
+ * from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z.
+ *
+ * @see
+ * https://github.com/google/protobuf/blob/master/src/google/protobuf/timestamp.proto
+ */
+class Timestamp {
+ public:
+  /**
+   * Creates a new timestamp representing the epoch (with seconds and
+   * nanoseconds set to 0).
+   */
+  Timestamp() = default;
+
+  /**
+   * Creates a new timestamp.
+   *
+   * @param seconds The number of seconds of UTC time since Unix epoch
+   *     1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
+   *     9999-12-31T23:59:59Z inclusive; otherwise, assertion failure will be
+   *     triggered.
+   * @param nanoseconds The non-negative fractions of a second at nanosecond
+   *     resolution. Negative second values with fractions must still have
+   *     non-negative nanoseconds values that count forward in time. Must be
+   *     from 0 to 999,999,999 inclusive; otherwise, assertion failure will be
+   *     triggered.
+   */
+  Timestamp(int64_t seconds, int32_t nanoseconds);
+
+  /** Copy constructor, `Timestamp` is trivially copyable. */
+  Timestamp(const Timestamp& other) = default;
+
+  /** Move constructor, equivalent to copying. */
+  Timestamp(Timestamp&& other) = default;
+
+  /** Copy assignment operator, `Timestamp` is trivially copyable. */
+  Timestamp& operator=(const Timestamp& other) = default;
+
+  /** Move assignment operator, equivalent to copying. */
+  Timestamp& operator=(Timestamp&& other) = default;
+
+  /**
+   * Creates a new timestamp with the current date.
+   *
+   * The precision is up to nanoseconds, depending on the system clock.
+   *
+   * @return a new timestamp representing the current date.
+   */
+  static Timestamp Now();
+
+  /**
+   * The number of seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z.
+   */
+  int64_t seconds() const {
+    return seconds_;
+  }
+
+  /**
+   * The non-negative fractions of a second at nanosecond resolution. Negative
+   * second values with fractions still have non-negative nanoseconds values
+   * that count forward in time.
+   */
+  int32_t nanoseconds() const {
+    return nanoseconds_;
+  }
+
+  /**
+   * Converts `time_t` to a `Timestamp`.
+   *
+   * @param seconds_since_unix_epoch
+   *     @parblock
+   *     The number of seconds of UTC time since Unix epoch
+   *     1970-01-01T00:00:00Z. Can be negative to represent dates before the
+   *     epoch. Must be from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z
+   *     inclusive; otherwise, assertion failure will be triggered.
+   *
+   *     Note that while the epoch of `time_t` is unspecified, it's usually Unix
+   *     epoch. If this assumption is broken, this function will produce
+   *     incorrect results.
+   *     @endparblock
+   *
+   * @return a new timestamp with the given number of seconds and zero
+   *     nanoseconds.
+   */
+  static Timestamp FromTimeT(time_t seconds_since_unix_epoch);
+
+#if !defined(_STLPORT_VERSION)
+  /**
+   * Converts `std::chrono::time_point` to a `Timestamp`.
+   *
+   * @param time_point
+   *     @parblock
+   *     The time point with system clock's epoch, which is
+   *     presumed to be Unix epoch 1970-01-01T00:00:00Z. Can be negative to
+   *     represent dates before the epoch. Must be from 0001-01-01T00:00:00Z to
+   *     9999-12-31T23:59:59Z inclusive; otherwise, assertion failure will be
+   *     triggered.
+   *
+   *     Note that while the epoch of `std::chrono::system_clock` is
+   *     unspecified, it's usually Unix epoch. If this assumption is broken,
+   *     this constructor will produce incorrect results.
+   *     @endparblock
+   */
+  static Timestamp FromTimePoint(
+      std::chrono::time_point<std::chrono::system_clock> time_point);
+
+  /**
+   * Converts this `Timestamp` to a `time_point`.
+   *
+   * Important: if overflow would occur, the returned value will be the maximum
+   * or minimum value that `Duration` can hold. Note in particular that `long
+   * long` is insufficient to hold the full range of `Timestamp` values with
+   * nanosecond precision (which is why `Duration` defaults to `microseconds`).
+   */
+  template <typename Clock = std::chrono::system_clock,
+            typename Duration = std::chrono::microseconds>
+  std::chrono::time_point<Clock, Duration> ToTimePoint() const;
+#endif  // !defined(_STLPORT_VERSION)
+
+  /**
+   * Returns a string representation of this `Timestamp` for logging/debugging
+   * purposes.
+   *
+   * @note: the exact string representation is unspecified and subject to
+   * change; don't rely on the format of the string.
+   */
+  std::string ToString() const;
+
+  /**
+   * Outputs the string representation of this `Timestamp` to the given stream.
+   *
+   * @see `ToString()` for comments on the representation format.
+   */
+  friend std::ostream& operator<<(std::ostream& out,
+                                  const Timestamp& timestamp);
+
+ private:
+  // Checks that the number of seconds is within the supported date range, and
+  // that nanoseconds satisfy 0 <= ns <= 1second.
+  void ValidateBounds() const;
+
+  int64_t seconds_ = 0;
+  int32_t nanoseconds_ = 0;
+};
+
+/** Checks whether `lhs` and `rhs` are in ascending order. */
+inline bool operator<(const Timestamp& lhs, const Timestamp& rhs) {
+  return lhs.seconds() < rhs.seconds() ||
+         (lhs.seconds() == rhs.seconds() &&
+          lhs.nanoseconds() < rhs.nanoseconds());
+}
+
+/** Checks whether `lhs` and `rhs` are in descending order. */
+inline bool operator>(const Timestamp& lhs, const Timestamp& rhs) {
+  return rhs < lhs;
+}
+
+/** Checks whether `lhs` and `rhs` are in non-ascending order. */
+inline bool operator>=(const Timestamp& lhs, const Timestamp& rhs) {
+  return !(lhs < rhs);
+}
+
+/** Checks whether `lhs` and `rhs` are in non-descending order. */
+inline bool operator<=(const Timestamp& lhs, const Timestamp& rhs) {
+  return !(lhs > rhs);
+}
+
+/** Checks `lhs` and `rhs` for inequality. */
+inline bool operator!=(const Timestamp& lhs, const Timestamp& rhs) {
+  return lhs < rhs || lhs > rhs;
+}
+
+/** Checks `lhs` and `rhs` for equality. */
+inline bool operator==(const Timestamp& lhs, const Timestamp& rhs) {
+  return !(lhs != rhs);
+}
+
+#if !defined(_STLPORT_VERSION)
+
+// Make sure the header compiles even when included after `<windows.h>` without
+// `NOMINMAX` defined. `push/pop_macro` pragmas are supported by Visual Studio
+// as well as Clang and GCC.
+#pragma push_macro("min")
+#pragma push_macro("max")
+#undef min
+#undef max
+
+template <typename Clock, typename Duration>
+std::chrono::time_point<Clock, Duration> Timestamp::ToTimePoint() const {
+  namespace chr = std::chrono;
+  using TimePoint = chr::time_point<Clock, Duration>;
+
+  // Saturate on overflow
+  const auto max_seconds = chr::duration_cast<chr::seconds>(Duration::max());
+  if (seconds_ > 0 && max_seconds.count() <= seconds_) {
+    return TimePoint{Duration::max()};
+  }
+  const auto min_seconds = chr::duration_cast<chr::seconds>(Duration::min());
+  if (seconds_ < 0 && min_seconds.count() >= seconds_) {
+    return TimePoint{Duration::min()};
+  }
+
+  const auto seconds = chr::duration_cast<Duration>(chr::seconds(seconds_));
+  const auto nanoseconds =
+      chr::duration_cast<Duration>(chr::nanoseconds(nanoseconds_));
+  return TimePoint{seconds + nanoseconds};
+}
+
+#pragma pop_macro("max")
+#pragma pop_macro("min")
+
+#endif  // !defined(_STLPORT_VERSION)
+
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_INCLUDE_FIREBASE_FIRESTORE_TIMESTAMP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/api_fwd.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/api_fwd.h
new file mode 100644
index 0000000..51aea75
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/api_fwd.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_API_FWD_H_
+#define FIRESTORE_CORE_SRC_API_API_FWD_H_
+
+#include <functional>
+#include <memory>
+
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+template <typename T>
+class EventListener;
+class Query;
+}  // namespace core
+
+namespace api {
+
+class CollectionReference;
+class DocumentChange;
+class DocumentReference;
+class DocumentSnapshot;
+class Firestore;
+class ListenerRegistration;
+class Query;
+class QuerySnapshot;
+class Settings;
+class SnapshotMetadata;
+class WriteBatch;
+
+enum class Source;
+
+using DocumentSnapshotListener =
+    std::unique_ptr<core::EventListener<DocumentSnapshot>>;
+
+using QuerySnapshotListener =
+    std::unique_ptr<core::EventListener<QuerySnapshot>>;
+
+using QueryCallback = std::function<void(core::Query, bool)>;
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_API_FWD_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.cc
new file mode 100644
index 0000000..a6d8f73
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.cc	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/collection_reference.h"
+
+#include <utility>
+
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/autoid.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+namespace {
+
+using core::Query;
+using model::DocumentKey;
+using model::ResourcePath;
+using util::ThrowInvalidArgument;
+
+Query MakeQuery(model::ResourcePath path) {
+  if (path.size() % 2 != 1) {
+    ThrowInvalidArgument(
+        "Invalid collection reference. Collection references "
+        "must have an odd number of segments, but %s has %s",
+        path.CanonicalString(), path.size());
+  }
+
+  return Query(std::move(path));
+}
+
+}  // namespace
+
+CollectionReference::CollectionReference(model::ResourcePath path,
+                                         std::shared_ptr<Firestore> firestore)
+    : Query(MakeQuery(std::move(path)), std::move(firestore)) {
+}
+
+bool operator==(const CollectionReference& lhs,
+                const CollectionReference& rhs) {
+  return lhs.firestore() == rhs.firestore() && lhs.query() == rhs.query();
+}
+
+size_t CollectionReference::Hash() const {
+  return util::Hash(firestore().get(), query());
+}
+
+const std::string& CollectionReference::collection_id() const {
+  return query().path().last_segment();
+}
+
+absl::optional<DocumentReference> CollectionReference::parent() const {
+  ResourcePath parent_path = query().path().PopLast();
+  if (parent_path.empty()) {
+    return absl::nullopt;
+  } else {
+    return DocumentReference(DocumentKey(std::move(parent_path)), firestore());
+  }
+}
+
+std::string CollectionReference::path() const {
+  return query().path().CanonicalString();
+}
+
+DocumentReference CollectionReference::Document(
+    const std::string& document_path) const {
+  ResourcePath sub_path = ResourcePath::FromString(document_path);
+  ResourcePath path = query().path().Append(sub_path);
+  return DocumentReference(std::move(path), firestore());
+}
+
+DocumentReference CollectionReference::AddDocument(
+    core::ParsedSetData&& data, util::StatusCallback callback) const {
+  DocumentReference doc_ref = Document();
+  doc_ref.SetData(std::move(data), std::move(callback));
+  return doc_ref;
+}
+
+DocumentReference CollectionReference::Document() const {
+  DocumentKey key(query().path().Append(util::CreateAutoId()));
+  return DocumentReference(std::move(key), firestore());
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.h
new file mode 100644
index 0000000..9116817
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/collection_reference.h	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_COLLECTION_REFERENCE_H_
+#define FIRESTORE_CORE_SRC_API_COLLECTION_REFERENCE_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/query_core.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class ResourcePath;
+}  // namespace model
+
+namespace api {
+
+/**
+ * A `CollectionReference` object can be used for adding documents, getting
+ * document references, and querying for documents (using the methods inherited
+ * from `Query`).
+ */
+class CollectionReference : public Query {
+ public:
+  CollectionReference() = default;
+  CollectionReference(model::ResourcePath path,
+                      std::shared_ptr<Firestore> firestore);
+
+  /** ID of the referenced collection. */
+  const std::string& collection_id() const;
+
+  /**
+   * For subcollections, `parent` returns the containing `DocumentReference`.
+   * For root collections, nullopt is returned.
+   */
+  absl::optional<DocumentReference> parent() const;
+
+  /**
+   * A string containing the slash-separated path to this `CollectionReference`
+   * (relative to the root of the database).
+   */
+  std::string path() const;
+
+  /**
+   * Returns a `DocumentReference` pointing to a new document with an
+   * auto-generated ID.
+   */
+  DocumentReference Document() const;
+
+  /**
+   * Gets a `DocumentReference` referring to the document at the specified path,
+   * relative to this collection's own path.
+   *
+   * @param document_path The slash-separated relative path of the document for
+   * which to get a `DocumentReference`.
+   *
+   * @return The `DocumentReference` for the specified document path.
+   */
+  DocumentReference Document(const std::string& document_path) const;
+
+  /**
+   * Add a new document to this collection with the specified data, assigning it
+   * a document ID automatically.
+   *
+   * @param data A `ParsedSetData` containing the data for the new document.
+   * @param callback A callback to execute once the document has been
+   *     successfully written to the server. This callback will not be called
+   *     while the client is offline, though local changes will be visible
+   *     immediately.
+   *
+   * @return A `DocumentReference` pointing to the newly created document.
+   */
+  DocumentReference AddDocument(core::ParsedSetData&& data,
+                                util::StatusCallback callback) const;
+
+  size_t Hash() const;
+};
+
+bool operator==(const CollectionReference& lhs, const CollectionReference& rhs);
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_COLLECTION_REFERENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.cc
new file mode 100644
index 0000000..fa749d3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.cc	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/document_change.h"
+
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+size_t DocumentChange::Hash() const {
+  return util::Hash(type_, document_, old_index_, new_index_);
+}
+
+bool operator==(const DocumentChange& lhs, const DocumentChange& rhs) {
+  return lhs.type() == rhs.type() && lhs.document() == rhs.document() &&
+         lhs.old_index() == rhs.old_index() &&
+         lhs.new_index() == rhs.new_index();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.h
new file mode 100644
index 0000000..2c7981e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_change.h	
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_DOCUMENT_CHANGE_H_
+#define FIRESTORE_CORE_SRC_API_DOCUMENT_CHANGE_H_
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/api/document_snapshot.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class DocumentChange {
+ public:
+  enum class Type { Added, Modified, Removed };
+
+  DocumentChange() = default;
+  DocumentChange(Type type,
+                 DocumentSnapshot document,
+                 size_t old_index,
+                 size_t new_index)
+      : type_(type),
+        document_(std::move(document)),
+        old_index_(old_index),
+        new_index_(new_index) {
+  }
+
+  size_t Hash() const;
+
+  Type type() const {
+    return type_;
+  }
+
+  DocumentSnapshot document() const {
+    return document_;
+  }
+
+  size_t old_index() const {
+    return old_index_;
+  }
+
+  size_t new_index() const {
+    return new_index_;
+  }
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return document_.firestore();
+  }
+
+  /**
+   * A sentinel return value for old_index() and new_index() indicating that
+   * there's no relevant index to return because the document was newly added
+   * or removed respectively.
+   */
+  static constexpr size_t npos = static_cast<size_t>(-1);
+
+ private:
+  Type type_;
+  DocumentSnapshot document_;
+  size_t old_index_;
+  size_t new_index_;
+};
+
+bool operator==(const DocumentChange& lhs, const DocumentChange& rhs);
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_DOCUMENT_CHANGE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.cc
new file mode 100644
index 0000000..706ef82
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.cc	
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/document_reference.h"
+
+#include <future>  // NOLINT(build/c++11)
+#include <memory>
+
+#include "Firestore/core/src/api/collection_reference.h"
+#include "Firestore/core/src/api/document_snapshot.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/query_listener_registration.h"
+#include "Firestore/core/src/api/source.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/listen_options.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/delete_mutation.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/precondition.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/firestore_exceptions.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using core::AsyncEventListener;
+using core::EventListener;
+using core::ListenOptions;
+using core::QueryListener;
+using core::ViewSnapshot;
+using model::DeleteMutation;
+using model::Document;
+using model::DocumentKey;
+using model::Precondition;
+using model::ResourcePath;
+using util::Status;
+using util::StatusOr;
+using util::StatusOrCallback;
+
+DocumentReference::DocumentReference(model::ResourcePath path,
+                                     std::shared_ptr<Firestore> firestore)
+    : firestore_{std::move(firestore)} {
+  if (path.size() % 2 != 0) {
+    util::ThrowInvalidArgument(
+        "Invalid document reference. Document references must have an even "
+        "number of segments, but %s has %s",
+        path.CanonicalString(), path.size());
+  }
+  key_ = DocumentKey{std::move(path)};
+}
+
+size_t DocumentReference::Hash() const {
+  return util::Hash(firestore_.get(), key_);
+}
+
+const std::string& DocumentReference::document_id() const {
+  return key_.path().last_segment();
+}
+
+CollectionReference DocumentReference::Parent() const {
+  return CollectionReference{key_.path().PopLast(), firestore_};
+}
+
+std::string DocumentReference::Path() const {
+  return key_.path().CanonicalString();
+}
+
+CollectionReference DocumentReference::GetCollectionReference(
+    const std::string& collection_path) const {
+  ResourcePath sub_path = ResourcePath::FromString(collection_path);
+  ResourcePath path = key_.path().Append(sub_path);
+  return CollectionReference{path, firestore_};
+}
+
+void DocumentReference::SetData(core::ParsedSetData&& set_data,
+                                util::StatusCallback callback) {
+  firestore_->client()->WriteMutations(
+      {std::move(set_data).ToMutation(key(), Precondition::None())},
+      std::move(callback));
+}
+
+void DocumentReference::UpdateData(core::ParsedUpdateData&& update_data,
+                                   util::StatusCallback callback) {
+  firestore_->client()->WriteMutations(
+      {std::move(update_data).ToMutation(key(), Precondition::Exists(true))},
+      std::move(callback));
+}
+
+void DocumentReference::DeleteDocument(util::StatusCallback callback) {
+  DeleteMutation mutation(key_, Precondition::None());
+  firestore_->client()->WriteMutations({mutation}, std::move(callback));
+}
+
+void DocumentReference::GetDocument(Source source,
+                                    DocumentSnapshotListener&& callback) {
+  if (source == Source::Cache) {
+    firestore_->client()->GetDocumentFromLocalCache(*this, std::move(callback));
+    return;
+  }
+
+  ListenOptions options(
+      /*include_query_metadata_changes=*/true,
+      /*include_document_metadata_changes=*/true,
+      /*wait_for_sync_when_online=*/true);
+
+  class ListenOnce : public EventListener<DocumentSnapshot> {
+   public:
+    ListenOnce(Source source, DocumentSnapshotListener&& listener)
+        : source_(source), listener_(std::move(listener)) {
+    }
+
+    void OnEvent(StatusOr<DocumentSnapshot> maybe_snapshot) override {
+      if (!maybe_snapshot.ok()) {
+        listener_->OnEvent(std::move(maybe_snapshot));
+        return;
+      }
+
+      DocumentSnapshot snapshot = std::move(maybe_snapshot).ValueOrDie();
+
+      // Remove query first before passing event to user to avoid user actions
+      // affecting the now stale query.
+      std::unique_ptr<ListenerRegistration> registration =
+          registration_promise_.get_future().get();
+      registration->Remove();
+
+      if (!snapshot.exists() && snapshot.metadata().from_cache()) {
+        // TODO(dimond): Reconsider how to raise missing documents when
+        // offline. If we're online and the document doesn't exist then we
+        // call the callback with a document with document.exists set to
+        // false. If we're offline however, we call the callback
+        // with an error. Two options: 1) Cache the negative response from the
+        // server so we can deliver that even when you're offline.
+        // 2) Actually call the callback with an error if the
+        // document doesn't exist when you are offline.
+        listener_->OnEvent(
+            Status{Error::kErrorUnavailable,
+                   "Failed to get document because the client is offline."});
+      } else if (snapshot.exists() && snapshot.metadata().from_cache() &&
+                 source_ == Source::Server) {
+        listener_->OnEvent(
+            Status{Error::kErrorUnavailable,
+                   "Failed to get document from server. (However, "
+                   "this document does exist in the local cache. Run "
+                   "again without setting source to "
+                   "FirestoreSourceServer to retrieve the cached "
+                   "document.)"});
+      } else {
+        listener_->OnEvent(std::move(snapshot));
+      }
+    }
+
+    void Resolve(std::unique_ptr<ListenerRegistration> registration) {
+      registration_promise_.set_value(std::move(registration));
+    }
+
+   private:
+    Source source_;
+    DocumentSnapshotListener listener_;
+
+    std::promise<std::unique_ptr<ListenerRegistration>> registration_promise_;
+  };
+  auto listener = absl::make_unique<ListenOnce>(source, std::move(callback));
+  auto listener_unowned = listener.get();
+
+  std::unique_ptr<ListenerRegistration> registration =
+      AddSnapshotListener(std::move(options), std::move(listener));
+
+  listener_unowned->Resolve(std::move(registration));
+}
+
+std::unique_ptr<ListenerRegistration> DocumentReference::AddSnapshotListener(
+    ListenOptions options, DocumentSnapshotListener&& user_listener) {
+  // Convert from ViewSnapshots to DocumentSnapshots.
+  class Converter : public EventListener<ViewSnapshot> {
+   public:
+    Converter(DocumentReference* parent,
+              DocumentSnapshotListener&& user_listener)
+        : firestore_(parent->firestore_),
+          key_(parent->key_),
+          user_listener_(std::move(user_listener)) {
+    }
+
+    void OnEvent(StatusOr<ViewSnapshot> maybe_snapshot) override {
+      if (!maybe_snapshot.ok()) {
+        user_listener_->OnEvent(maybe_snapshot.status());
+        return;
+      }
+
+      ViewSnapshot snapshot = std::move(maybe_snapshot).ValueOrDie();
+      HARD_ASSERT(snapshot.documents().size() <= 1,
+                  "Too many documents returned on a document query");
+      absl::optional<Document> document =
+          snapshot.documents().GetDocument(key_);
+
+      bool has_pending_writes =
+          document ? snapshot.mutated_keys().contains(key_)
+                   // We don't raise `has_pending_writes` for deleted documents.
+                   : false;
+
+      DocumentSnapshot result{
+          firestore_, key_, document,
+          SnapshotMetadata{has_pending_writes, snapshot.from_cache()}};
+      user_listener_->OnEvent(std::move(result));
+    }
+
+   private:
+    std::shared_ptr<Firestore> firestore_;
+    DocumentKey key_;
+    DocumentSnapshotListener user_listener_;
+  };
+  auto view_listener =
+      absl::make_unique<Converter>(this, std::move(user_listener));
+
+  // Call the view_listener on the user Executor.
+  auto async_listener = AsyncEventListener<ViewSnapshot>::Create(
+      firestore_->client()->user_executor(), std::move(view_listener));
+
+  core::Query query(key_.path());
+  std::shared_ptr<QueryListener> query_listener =
+      firestore_->client()->ListenToQuery(std::move(query), options,
+                                          async_listener);
+
+  return absl::make_unique<QueryListenerRegistration>(
+      firestore_->client(), std::move(async_listener),
+      std::move(query_listener));
+}
+
+bool operator==(const DocumentReference& lhs, const DocumentReference& rhs) {
+  return lhs.firestore() == rhs.firestore() && lhs.key() == rhs.key();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.h
new file mode 100644
index 0000000..41a6edc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_reference.h	
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_DOCUMENT_REFERENCE_H_
+#define FIRESTORE_CORE_SRC_API_DOCUMENT_REFERENCE_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class ResourcePath;
+}  // namespace model
+
+namespace api {
+
+class DocumentReference {
+ public:
+  DocumentReference() = default;
+  DocumentReference(model::ResourcePath path,
+                    std::shared_ptr<Firestore> firestore);
+  DocumentReference(model::DocumentKey document_key,
+                    std::shared_ptr<Firestore> firestore)
+      : firestore_{std::move(firestore)}, key_{std::move(document_key)} {
+  }
+
+  size_t Hash() const;
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+  const model::DocumentKey& key() const {
+    return key_;
+  }
+
+  const std::string& document_id() const;
+
+  CollectionReference Parent() const;
+
+  std::string Path() const;
+
+  CollectionReference GetCollectionReference(
+      const std::string& collection_path) const;
+
+  void SetData(core::ParsedSetData&& set_data, util::StatusCallback callback);
+
+  void UpdateData(core::ParsedUpdateData&& update_data,
+                  util::StatusCallback callback);
+
+  void DeleteDocument(util::StatusCallback callback);
+
+  void GetDocument(Source source, DocumentSnapshotListener&& callback);
+
+  std::unique_ptr<ListenerRegistration> AddSnapshotListener(
+      core::ListenOptions options, DocumentSnapshotListener&& listener);
+
+ private:
+  std::shared_ptr<Firestore> firestore_;
+  model::DocumentKey key_;
+};
+
+bool operator==(const DocumentReference& lhs, const DocumentReference& rhs);
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_DOCUMENT_REFERENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.cc
new file mode 100644
index 0000000..ee1eb68
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.cc	
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/document_snapshot.h"
+
+#include <utility>
+
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using model::Document;
+using model::DocumentKey;
+using model::FieldPath;
+using model::ObjectValue;
+
+DocumentSnapshot DocumentSnapshot::FromDocument(
+    std::shared_ptr<Firestore> firestore,
+    model::Document document,
+    SnapshotMetadata metadata) {
+  return DocumentSnapshot{std::move(firestore), document->key(), document,
+                          std::move(metadata)};
+}
+
+DocumentSnapshot DocumentSnapshot::FromNoDocument(
+    std::shared_ptr<Firestore> firestore,
+    model::DocumentKey key,
+    SnapshotMetadata metadata) {
+  return DocumentSnapshot{std::move(firestore), std::move(key), absl::nullopt,
+                          std::move(metadata)};
+}
+
+DocumentSnapshot::DocumentSnapshot(std::shared_ptr<Firestore> firestore,
+                                   model::DocumentKey document_key,
+                                   absl::optional<Document> document,
+                                   SnapshotMetadata metadata)
+    : firestore_{std::move(firestore)},
+      internal_key_{std::move(document_key)},
+      internal_document_{std::move(document)},
+      metadata_{std::move(metadata)} {
+}
+
+size_t DocumentSnapshot::Hash() const {
+  return util::Hash(firestore_.get(), internal_key_, internal_document_,
+                    metadata_);
+}
+
+bool DocumentSnapshot::exists() const {
+  return internal_document_.has_value();
+}
+
+const absl::optional<Document>& DocumentSnapshot::internal_document() const {
+  return internal_document_;
+}
+
+DocumentReference DocumentSnapshot::CreateReference() const {
+  return DocumentReference{internal_key_, firestore_};
+}
+
+const std::string& DocumentSnapshot::document_id() const {
+  return internal_key_.path().last_segment();
+}
+
+absl::optional<google_firestore_v1_Value> DocumentSnapshot::GetValue(
+    const FieldPath& field_path) const {
+  return internal_document_ ? (*internal_document_)->field(field_path)
+                            : absl::nullopt;
+}
+
+bool operator==(const DocumentSnapshot& lhs, const DocumentSnapshot& rhs) {
+  return lhs.firestore_ == rhs.firestore_ &&
+         lhs.internal_key_ == rhs.internal_key_ &&
+         lhs.exists() == rhs.exists() &&
+         (lhs.exists() ? lhs.internal_document_->get().data() ==
+                             rhs.internal_document_->get().data()
+                       : true) &&
+         lhs.metadata_ == rhs.metadata_;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.h
new file mode 100644
index 0000000..f1e4ef2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/document_snapshot.h	
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_DOCUMENT_SNAPSHOT_H_
+#define FIRESTORE_CORE_SRC_API_DOCUMENT_SNAPSHOT_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/api/snapshot_metadata.h"
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class DocumentReference;
+class Firestore;
+
+class DocumentSnapshot {
+ public:
+  DocumentSnapshot() = default;
+
+  static DocumentSnapshot FromDocument(std::shared_ptr<Firestore> firestore,
+                                       model::Document document,
+                                       SnapshotMetadata metadata);
+
+  static DocumentSnapshot FromNoDocument(std::shared_ptr<Firestore> firestore,
+                                         model::DocumentKey key,
+                                         SnapshotMetadata metadata);
+
+  size_t Hash() const;
+
+  bool exists() const;
+  const absl::optional<model::Document>& internal_document() const;
+  const std::string& document_id() const;
+
+  const SnapshotMetadata& metadata() const {
+    return metadata_;
+  }
+
+  DocumentReference CreateReference() const;
+
+  absl::optional<google_firestore_v1_Value> GetValue(
+      const model::FieldPath& field_path) const;
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+
+  friend bool operator==(const DocumentSnapshot& lhs,
+                         const DocumentSnapshot& rhs);
+
+ private:
+  // TODO(b/146372592): Make this public once we can use Abseil across
+  // iOS/public C++ library boundaries.
+  friend class DocumentReference;
+
+  DocumentSnapshot(std::shared_ptr<Firestore> firestore,
+                   model::DocumentKey document_key,
+                   absl::optional<model::Document> document,
+                   SnapshotMetadata metadata);
+
+ private:
+  std::shared_ptr<Firestore> firestore_;
+  model::DocumentKey internal_key_;
+  absl::optional<model::Document> internal_document_;
+  SnapshotMetadata metadata_;
+};
+
+using DocumentSnapshotListener =
+    std::unique_ptr<core::EventListener<DocumentSnapshot>>;
+
+inline bool operator!=(const DocumentSnapshot& lhs,
+                       const DocumentSnapshot& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_DOCUMENT_SNAPSHOT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.cc
new file mode 100644
index 0000000..44ee835
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.cc	
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/firestore.h"
+
+#include <utility>
+
+#include "Firestore/core/src/api/collection_reference.h"
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/listener_registration.h"
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/api/snapshots_in_sync_listener_registration.h"
+#include "Firestore/core/src/api/write_batch.h"
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using auth::CredentialsProvider;
+using core::AsyncEventListener;
+using core::DatabaseInfo;
+using core::FirestoreClient;
+using local::LevelDbPersistence;
+using model::ResourcePath;
+using remote::FirebaseMetadataProvider;
+using remote::GrpcConnection;
+using util::AsyncQueue;
+using util::Empty;
+using util::Executor;
+using util::Status;
+
+Firestore::Firestore(
+    model::DatabaseId database_id,
+    std::string persistence_key,
+    std::shared_ptr<CredentialsProvider> credentials_provider,
+    std::shared_ptr<AsyncQueue> worker_queue,
+    std::unique_ptr<FirebaseMetadataProvider> firebase_metadata_provider,
+    void* extension)
+    : database_id_{std::move(database_id)},
+      credentials_provider_{std::move(credentials_provider)},
+      persistence_key_{std::move(persistence_key)},
+      worker_queue_{std::move(worker_queue)},
+      firebase_metadata_provider_{std::move(firebase_metadata_provider)},
+      extension_{extension} {
+}
+
+Firestore::~Firestore() {
+  Dispose();
+}
+
+void Firestore::Dispose() {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  // If the client hasn't been configured yet we don't need to create it just
+  // to tear it down.
+  if (!client_) return;
+
+  client_->Dispose();
+}
+
+const std::shared_ptr<FirestoreClient>& Firestore::client() {
+  HARD_ASSERT(client_, "Client is not yet configured.");
+  return client_;
+}
+
+const std::shared_ptr<AsyncQueue>& Firestore::worker_queue() {
+  return worker_queue_;
+}
+
+const Settings& Firestore::settings() const {
+  std::lock_guard<std::mutex> lock{mutex_};
+  return settings_;
+}
+
+void Firestore::set_settings(const Settings& settings) {
+  std::lock_guard<std::mutex> lock{mutex_};
+  if (client_) {
+    util::ThrowIllegalState(
+        "Firestore instance has already been started and its settings can "
+        "no longer be changed. You can only set settings before calling any "
+        "other methods on a Firestore instance.");
+  }
+  if (!settings.ssl_enabled() && settings.host() == Settings::DefaultHost) {
+    util::ThrowIllegalState(
+        "You can't set the 'sslEnabled' setting to false unless you also set a "
+        "non-default 'host'.");
+  }
+
+  settings_ = settings;
+}
+
+void Firestore::set_user_executor(std::unique_ptr<Executor> user_executor) {
+  std::lock_guard<std::mutex> lock{mutex_};
+  HARD_ASSERT(!client_ && user_executor,
+              "set_user_executor() must be called with a valid executor, "
+              "before the client is initialized.");
+  user_executor_ = std::move(user_executor);
+}
+
+CollectionReference Firestore::GetCollection(
+    const std::string& collection_path) {
+  EnsureClientConfigured();
+  ResourcePath path = ResourcePath::FromString(collection_path);
+  return CollectionReference{std::move(path), shared_from_this()};
+}
+
+DocumentReference Firestore::GetDocument(const std::string& document_path) {
+  EnsureClientConfigured();
+  return DocumentReference{ResourcePath::FromString(document_path),
+                           shared_from_this()};
+}
+
+WriteBatch Firestore::GetBatch() {
+  EnsureClientConfigured();
+  return WriteBatch(shared_from_this());
+}
+
+core::Query Firestore::GetCollectionGroup(std::string collection_id) {
+  EnsureClientConfigured();
+
+  return core::Query(ResourcePath::Empty(), std::make_shared<const std::string>(
+                                                std::move(collection_id)));
+}
+
+void Firestore::RunTransaction(
+    core::TransactionUpdateCallback update_callback,
+    core::TransactionResultCallback result_callback) {
+  EnsureClientConfigured();
+
+  client_->Transaction(5, std::move(update_callback),
+                       std::move(result_callback));
+}
+
+void Firestore::Terminate(util::StatusCallback callback) {
+  // The client must be initialized to ensure that all subsequent API usage
+  // throws an exception.
+  EnsureClientConfigured();
+  client_->TerminateAsync(std::move(callback));
+}
+
+void Firestore::WaitForPendingWrites(util::StatusCallback callback) {
+  EnsureClientConfigured();
+  client_->WaitForPendingWrites(std::move(callback));
+}
+
+void Firestore::ClearPersistence(util::StatusCallback callback) {
+  worker_queue()->EnqueueEvenWhileRestricted([this, callback] {
+    auto MaybeCallback = [=](Status status) {
+      if (callback) {
+        user_executor_->Execute([=] { callback(status); });
+      }
+    };
+
+    {
+      std::lock_guard<std::mutex> lock{mutex_};
+      if (client_ && !client_->is_terminated()) {
+        MaybeCallback(util::Status(
+            Error::kErrorFailedPrecondition,
+            "Persistence cannot be cleared while the client is running."));
+        return;
+      }
+    }
+
+    MaybeCallback(LevelDbPersistence::ClearPersistence(MakeDatabaseInfo()));
+  });
+}
+
+void Firestore::EnableNetwork(util::StatusCallback callback) {
+  EnsureClientConfigured();
+  client_->EnableNetwork(std::move(callback));
+}
+
+void Firestore::DisableNetwork(util::StatusCallback callback) {
+  EnsureClientConfigured();
+  client_->DisableNetwork(std::move(callback));
+}
+
+void Firestore::SetClientLanguage(std::string language_token) {
+  GrpcConnection::SetClientLanguage(std::move(language_token));
+}
+
+std::unique_ptr<ListenerRegistration> Firestore::AddSnapshotsInSyncListener(
+    std::unique_ptr<core::EventListener<Empty>> listener) {
+  EnsureClientConfigured();
+  auto async_listener = AsyncEventListener<Empty>::Create(
+      client_->user_executor(), std::move(listener));
+  client_->AddSnapshotsInSyncListener(async_listener);
+  return absl::make_unique<SnapshotsInSyncListenerRegistration>(
+      client_, std::move(async_listener));
+}
+
+void Firestore::EnsureClientConfigured() {
+  std::lock_guard<std::mutex> lock{mutex_};
+
+  if (!client_) {
+    HARD_ASSERT(worker_queue_, "Expected non-null worker queue");
+    client_ = FirestoreClient::Create(
+        MakeDatabaseInfo(), settings_, std::move(credentials_provider_),
+        user_executor_, worker_queue_, std::move(firebase_metadata_provider_));
+  }
+}
+
+DatabaseInfo Firestore::MakeDatabaseInfo() const {
+  return DatabaseInfo(database_id_, persistence_key_, settings_.host(),
+                      settings_.ssl_enabled());
+}
+
+std::shared_ptr<LoadBundleTask> Firestore::LoadBundle(
+    std::unique_ptr<util::ByteStream> bundle_data) {
+  EnsureClientConfigured();
+
+  auto task = std::make_shared<LoadBundleTask>(user_executor_);
+  client_->LoadBundle(std::move(bundle_data), task);
+
+  return task;
+}
+
+void Firestore::GetNamedQuery(const std::string& name,
+                              api::QueryCallback callback) {
+  EnsureClientConfigured();
+  client_->GetNamedQuery(name, std::move(callback));
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.h
new file mode 100644
index 0000000..09b28ba
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/firestore.h	
@@ -0,0 +1,142 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_FIRESTORE_H_
+#define FIRESTORE_CORE_SRC_API_FIRESTORE_H_
+
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <string>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/util/byte_stream.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace auth {
+class CredentialsProvider;
+}  // namespace auth
+
+namespace remote {
+class FirebaseMetadataProvider;
+}  // namespace remote
+
+namespace util {
+class AsyncQueue;
+class Executor;
+
+struct Empty;
+}  // namespace util
+
+namespace api {
+
+class Firestore : public std::enable_shared_from_this<Firestore> {
+ public:
+  Firestore() = default;
+
+  Firestore(model::DatabaseId database_id,
+            std::string persistence_key,
+            std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+            std::shared_ptr<util::AsyncQueue> worker_queue,
+            std::unique_ptr<remote::FirebaseMetadataProvider>
+                firebase_metadata_provider,
+            void* extension);
+
+  ~Firestore();
+
+  void Dispose();
+
+  const model::DatabaseId& database_id() const {
+    return database_id_;
+  }
+
+  const std::string& persistence_key() const {
+    return persistence_key_;
+  }
+
+  const std::shared_ptr<core::FirestoreClient>& client();
+
+  const std::shared_ptr<util::AsyncQueue>& worker_queue();
+
+  void* extension() {
+    return extension_;
+  }
+
+  const Settings& settings() const;
+  void set_settings(const Settings& settings);
+
+  void set_user_executor(std::unique_ptr<util::Executor> user_executor);
+
+  CollectionReference GetCollection(const std::string& collection_path);
+  DocumentReference GetDocument(const std::string& document_path);
+  WriteBatch GetBatch();
+  core::Query GetCollectionGroup(std::string collection_id);
+
+  void RunTransaction(core::TransactionUpdateCallback update_callback,
+                      core::TransactionResultCallback result_callback);
+
+  void Terminate(util::StatusCallback callback);
+  void ClearPersistence(util::StatusCallback callback);
+  void WaitForPendingWrites(util::StatusCallback callback);
+  std::unique_ptr<ListenerRegistration> AddSnapshotsInSyncListener(
+      std::unique_ptr<core::EventListener<util::Empty>> listener);
+
+  void EnableNetwork(util::StatusCallback callback);
+  void DisableNetwork(util::StatusCallback callback);
+
+  std::shared_ptr<api::LoadBundleTask> LoadBundle(
+      std::unique_ptr<util::ByteStream> bundle_data);
+  void GetNamedQuery(const std::string& name, api::QueryCallback callback);
+
+  /**
+   * Sets the language of the public API in the format of
+   * "gl-<language>/<version>" where version might be blank, e.g. `gl-objc/`.
+   */
+  static void SetClientLanguage(std::string language_token);
+
+ private:
+  void EnsureClientConfigured();
+  core::DatabaseInfo MakeDatabaseInfo() const;
+
+  model::DatabaseId database_id_;
+  std::shared_ptr<auth::CredentialsProvider> credentials_provider_;
+  std::string persistence_key_;
+
+  std::shared_ptr<util::Executor> user_executor_;
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+
+  std::unique_ptr<remote::FirebaseMetadataProvider> firebase_metadata_provider_;
+
+  void* extension_ = nullptr;
+
+  Settings settings_;
+
+  mutable std::mutex mutex_;
+
+  std::shared_ptr<core::FirestoreClient> client_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_FIRESTORE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/listener_registration.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/listener_registration.h
new file mode 100644
index 0000000..c30d0d5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/listener_registration.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_LISTENER_REGISTRATION_H_
+#define FIRESTORE_CORE_SRC_API_LISTENER_REGISTRATION_H_
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class FirestoreClient;
+}  // namespace core
+
+namespace api {
+
+/**
+ * An internal handle that encapsulates a user's ability to request that we
+ * stop listening to a listener. When a user calls Remove(),
+ * ListenerRegistration will synchronously mute the listener and then send a
+ * request to the FirestoreClient to actually unlisten.
+ *
+ * ListenerRegistration will not automatically stop listening if it is
+ * destroyed. We allow users to fire and forget listens if they never want to
+ * stop them.
+ *
+ * Getting shutdown code right is tricky so ListenerRegistration is very
+ * forgiving. It will tolerate:
+ *
+ *   * Multiple calls to Remove(),
+ *   * calls to Remove() after we send an error,
+ *   * calls to Remove() even after deleting the App in which the listener was
+ *     started.
+ */
+class ListenerRegistration {
+ public:
+  virtual ~ListenerRegistration() = default;
+
+  /**
+   * Removes the listener being tracked in this ListenerRegistration. After
+   * the initial call, subsequent calls have no effect.
+   */
+  virtual void Remove() = 0;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_LISTENER_REGISTRATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.cc
new file mode 100644
index 0000000..08c6a82
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.cc	
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/load_bundle_task.h"
+
+#include <mutex>  // NOLINT(build/c++11)
+#include <utility>
+
+#include "Firestore/core/src/util/autoid.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+LoadBundleTask::~LoadBundleTask() {
+  // NOTE: this is needed because users might call to modify some fields from
+  // user callback thread. With this lock guard, we could be destroying the
+  // instance while those calls are still in flight.
+  std::lock_guard<std::mutex> lock(mutex_);
+}
+
+LoadBundleTask::LoadBundleHandle LoadBundleTask::Observe(
+    ProgressObserver observer) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  auto handle = next_handle_++;
+  observers_.push_back({handle, std::move(observer)});
+
+  return handle;
+}
+
+LoadBundleTask::LoadBundleHandle LoadBundleTask::SetLastObserver(
+    ProgressObserver observer) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  auto handle = next_handle_++;
+  last_observer_ = {handle, std::move(observer)};
+
+  return handle;
+}
+
+void LoadBundleTask::RemoveObserver(const LoadBundleHandle& handle) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  auto found = absl::c_find_if(
+      observers_, [&](const HandleObservers::value_type& observer) {
+        return observer.first == handle;
+      });
+  if (found != observers_.end()) {
+    observers_.erase(found);
+  }
+
+  if (last_observer_.has_value() && last_observer_.value().first == handle) {
+    last_observer_ = absl::nullopt;
+  }
+}
+
+void LoadBundleTask::RemoveAllObservers() {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  observers_.clear();
+  last_observer_ = absl::nullopt;
+}
+
+void LoadBundleTask::SetSuccess(LoadBundleTaskProgress success_progress) {
+  HARD_ASSERT(success_progress.state() == LoadBundleTaskState::kSuccess,
+              "Calling SetSuccess() with a state that is not 'Success'");
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  progress_snapshot_ = success_progress;
+  NotifyObservers();
+}
+
+void LoadBundleTask::SetError(const util::Status& status) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  progress_snapshot_.set_state(LoadBundleTaskState::kError);
+  progress_snapshot_.set_error_status(status);
+
+  NotifyObservers();
+}
+
+void LoadBundleTask::UpdateProgress(LoadBundleTaskProgress progress) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  progress_snapshot_ = progress;
+  NotifyObservers();
+}
+
+void LoadBundleTask::NotifyObservers() {
+  for (const auto& entry : observers_) {
+    const auto& observer = entry.second;
+    const auto& progress = progress_snapshot_;
+    user_executor_->Execute([observer, progress] { observer(progress); });
+  }
+
+  if (last_observer_.has_value()) {
+    const auto& observer = last_observer_.value().second;
+    const auto& progress = progress_snapshot_;
+    user_executor_->Execute([observer, progress] { observer(progress); });
+  }
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.h
new file mode 100644
index 0000000..9573a5a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/load_bundle_task.h	
@@ -0,0 +1,236 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_API_LOAD_BUNDLE_TASK_H_
+#define FIRESTORE_CORE_SRC_API_LOAD_BUNDLE_TASK_H_
+
+#include <cstdint>
+#include <functional>
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * Represents the state of bundle loading tasks.
+ *
+ * Both `kSuccess` and `kError` are final states: task will abort
+ * or complete and there will be no more updates after they are reported.
+ */
+enum class LoadBundleTaskState { kError, kInProgress, kSuccess };
+
+/** Represents a progress update or a final state from loading bundles. */
+class LoadBundleTaskProgress {
+ public:
+  LoadBundleTaskProgress() = default;
+  LoadBundleTaskProgress(uint32_t documents_loaded,
+                         uint32_t total_documents,
+                         uint64_t bytes_loaded,
+                         uint64_t total_bytes,
+                         LoadBundleTaskState state)
+      : documents_loaded_(documents_loaded),
+        total_documents_(total_documents),
+        bytes_loaded_(bytes_loaded),
+        total_bytes_(total_bytes),
+        state_(state) {
+  }
+
+  LoadBundleTaskProgress(uint32_t documents_loaded,
+                         uint32_t total_documents,
+                         uint64_t bytes_loaded,
+                         uint64_t total_bytes,
+                         LoadBundleTaskState state,
+                         const util::Status& error_status)
+      : documents_loaded_(documents_loaded),
+        total_documents_(total_documents),
+        bytes_loaded_(bytes_loaded),
+        total_bytes_(total_bytes),
+        state_(state),
+        error_status_(error_status) {
+  }
+
+  /** Returns how many documents have been loaded. */
+  uint32_t documents_loaded() const {
+    return documents_loaded_;
+  }
+
+  /**
+   * Returns the total number of documents in the bundle. Returns 0 if the
+   * bundle failed to parse.
+   */
+  uint32_t total_documents() const {
+    return total_documents_;
+  }
+
+  /** Returns how many bytes have been loaded. */
+  uint64_t bytes_loaded() const {
+    return bytes_loaded_;
+  }
+
+  /**
+   * Returns the total number of bytes in the bundle. Returns 0 if the bundle
+   * failed to parse.
+   */
+  uint64_t total_bytes() const {
+    return total_bytes_;
+  }
+
+  /** Returns the current state of the task. */
+  LoadBundleTaskState state() const {
+    return state_;
+  }
+
+  void set_state(LoadBundleTaskState state) {
+    state_ = state;
+  }
+
+  const util::Status& error_status() const {
+    return error_status_;
+  }
+
+  void set_error_status(const util::Status& error_status) {
+    error_status_.Update(error_status);
+  }
+
+ private:
+  uint32_t documents_loaded_ = 0;
+  uint32_t total_documents_ = 0;
+  uint64_t bytes_loaded_ = 0;
+  uint64_t total_bytes_ = 0;
+
+  LoadBundleTaskState state_ = LoadBundleTaskState::kInProgress;
+  util::Status error_status_;
+};
+
+inline bool operator==(const LoadBundleTaskProgress lhs,
+                       const LoadBundleTaskProgress& rhs) {
+  return lhs.state() == rhs.state() &&
+         lhs.bytes_loaded() == rhs.bytes_loaded() &&
+         lhs.documents_loaded() == rhs.documents_loaded() &&
+         lhs.total_bytes() == rhs.total_bytes() &&
+         lhs.total_documents() == rhs.total_documents() &&
+         lhs.error_status() == rhs.error_status();
+}
+
+inline bool operator!=(const LoadBundleTaskProgress lhs,
+                       const LoadBundleTaskProgress& rhs) {
+  return !(lhs == rhs);
+}
+
+/**
+ * Represents the task of loading a Firestore bundle. It provides progress of
+ * bundle loading, as well as task completion and error events.
+ */
+class LoadBundleTask {
+ public:
+  /** A handle used to look up and remove observer from the task. */
+  using LoadBundleHandle = int64_t;
+
+  /** Observer type that is called by the task when there is an update. */
+  using ProgressObserver = std::function<void(LoadBundleTaskProgress)>;
+
+  explicit LoadBundleTask(std::shared_ptr<util::Executor> user_executor)
+      : user_executor_(std::move(user_executor)) {
+  }
+
+  // This class cannot be copied or moved, because it holds a mutex.
+  LoadBundleTask(const LoadBundleTask& other) = delete;
+  LoadBundleTask& operator=(LoadBundleTask& other) = delete;
+
+  ~LoadBundleTask();
+
+  /**
+   * Instructs the task to notify the specified observer when there is a
+   * progress update.
+   *
+   * @return A handle that can be used to remove the callback from this task.
+   */
+  LoadBundleHandle Observe(ProgressObserver observer);
+
+  /**
+   * Instructs the task to notify the specified observer when there is a
+   * progress update.
+   *
+   * For a given progress update, this observer is guaranteed to be called
+   * after all other observers. Calling `SetLastObserver` a second time will
+   * override the observer registered the first time.
+   *
+   * @return A handle that can be used to remove the callback from this task.
+   */
+  LoadBundleHandle SetLastObserver(ProgressObserver observer);
+
+  /**
+   * Removes the observer associated with the given handle, does nothing if the
+   * callback cannot be found.
+   */
+  void RemoveObserver(const LoadBundleHandle& handle);
+
+  /** Removes all observers. */
+  void RemoveAllObservers();
+
+  /**
+   * Notifies observers with a `Success` progress.
+   */
+  void SetSuccess(LoadBundleTaskProgress success_progress);
+
+  /**
+   * Notifies observers with a error progress, by changing the last progress
+   * this instance has been with an `Error` state.
+   */
+  void SetError(const util::Status& status);
+
+  /** Notifies observers with a `InProgress` progress. */
+  void UpdateProgress(LoadBundleTaskProgress progress);
+
+ private:
+  /** Holds the `LoadBundleHandle` to `ProgressObserver` mapping. */
+  using HandleObservers =
+      std::vector<std::pair<LoadBundleHandle, ProgressObserver>>;
+
+  /** Notifies all observers with current `progress_snapshot_`. */
+  void NotifyObservers();
+
+  LoadBundleHandle next_handle_ = 1;
+
+  /** The executor to run all observers when notified. */
+  std::shared_ptr<util::Executor> user_executor_;
+
+  /** Guard to all internal state mutation. */
+  mutable std::mutex mutex_;
+
+  /** A vector holds observers. */
+  HandleObservers observers_;
+
+  /** Observer guaranteed to be called the last. */
+  absl::optional<std::pair<LoadBundleHandle, ProgressObserver>> last_observer_;
+
+  /** The last progress update. */
+  LoadBundleTaskProgress progress_snapshot_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_LOAD_BUNDLE_TASK_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.cc
new file mode 100644
index 0000000..7323284
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.cc	
@@ -0,0 +1,481 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/query_core.h"
+
+#include <future>  // NOLINT(build/c++11)
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/query_listener_registration.h"
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/api/source.h"
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/listen_options.h"
+#include "Firestore/core/src/core/operator.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/exception.h"
+#include "absl/algorithm/container.h"
+#include "absl/strings/match.h"
+#include "absl/types/span.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+namespace util = firebase::firestore::util;
+using core::AsyncEventListener;
+using core::Bound;
+using core::Direction;
+using core::EventListener;
+using core::FieldFilter;
+using core::Filter;
+using core::IsArrayOperator;
+using core::IsDisjunctiveOperator;
+using core::ListenOptions;
+using core::QueryListener;
+using core::ViewSnapshot;
+using model::DocumentKey;
+using model::FieldPath;
+using model::GetTypeOrder;
+using model::IsArray;
+using model::RefValue;
+using model::ResourcePath;
+using model::TypeOrder;
+using nanopb::MakeSharedMessage;
+using nanopb::Message;
+using util::Status;
+using util::StatusOr;
+using util::ThrowInvalidArgument;
+
+using Operator = Filter::Operator;
+
+namespace {
+/**
+ * Given an operator, returns the set of operators that cannot be used with
+ * it.
+ *
+ * Operators in a query must adhere to the following set of rules:
+ * 1. Only one array operator is allowed.
+ * 2. Only one disjunctive operator is allowed.
+ * 3. NOT_EQUAL cannot be used with another NOT_EQUAL operator.
+ * 4. NOT_IN cannot be used with array, disjunctive, or NOT_EQUAL operators.
+ *
+ * Array operators: ARRAY_CONTAINS, ARRAY_CONTAINS_ANY
+ * Disjunctive operators: IN, ARRAY_CONTAINS_ANY, NOT_IN
+ */
+static std::vector<Operator> ConflictingOps(Operator op) {
+  switch (op) {
+    case Operator::NotEqual:
+      return {Operator::NotEqual, Operator::NotIn};
+    case Operator::ArrayContains:
+      return {Operator::ArrayContains, Operator::ArrayContainsAny,
+              Operator::NotIn};
+    case Operator::In:
+      return {Operator::ArrayContainsAny, Operator::In, Operator::NotIn};
+    case Operator::ArrayContainsAny:
+      return {Operator::ArrayContains, Operator::ArrayContainsAny, Operator::In,
+              Operator::NotIn};
+    case Operator::NotIn:
+      return {Operator::ArrayContains, Operator::ArrayContainsAny, Operator::In,
+              Operator::NotIn, Operator::NotEqual};
+    default:
+      return std::vector<Operator>();
+  }
+}
+}  // unnamed namespace
+
+Query::Query(core::Query query, std::shared_ptr<Firestore> firestore)
+    : firestore_{std::move(firestore)}, query_{std::move(query)} {
+}
+
+bool operator==(const Query& lhs, const Query& rhs) {
+  return lhs.firestore() == rhs.firestore() && lhs.query() == rhs.query();
+}
+
+size_t Query::Hash() const {
+  return util::Hash(firestore_.get(), query());
+}
+
+void Query::GetDocuments(Source source, QuerySnapshotListener&& callback) {
+  ValidateHasExplicitOrderByForLimitToLast();
+  if (source == Source::Cache) {
+    firestore_->client()->GetDocumentsFromLocalCache(*this,
+                                                     std::move(callback));
+    return;
+  }
+
+  ListenOptions options(
+      /*include_query_metadata_changes=*/true,
+      /*include_document_metadata_changes=*/true,
+      /*wait_for_sync_when_online=*/true);
+
+  class ListenOnce : public EventListener<QuerySnapshot> {
+   public:
+    ListenOnce(Source source, QuerySnapshotListener&& listener)
+        : source_(source), listener_(std::move(listener)) {
+    }
+
+    void OnEvent(StatusOr<QuerySnapshot> maybe_snapshot) override {
+      if (!maybe_snapshot.ok()) {
+        listener_->OnEvent(std::move(maybe_snapshot));
+        return;
+      }
+
+      QuerySnapshot snapshot = std::move(maybe_snapshot).ValueOrDie();
+
+      // Remove query first before passing event to user to avoid user actions
+      // affecting the now stale query.
+      std::unique_ptr<ListenerRegistration> registration =
+          registration_promise_.get_future().get();
+      registration->Remove();
+
+      if (snapshot.metadata().from_cache() && source_ == Source::Server) {
+        listener_->OnEvent(Status{
+            Error::kErrorUnavailable,
+            "Failed to get documents from server. (However, these documents "
+            "may exist in the local cache. Run again without setting source to "
+            "FirestoreSourceServer to retrieve the cached documents.)"});
+      } else {
+        listener_->OnEvent(std::move(snapshot));
+      }
+    };
+
+    void Resolve(std::unique_ptr<ListenerRegistration> registration) {
+      registration_promise_.set_value(std::move(registration));
+    }
+
+   private:
+    Source source_;
+    QuerySnapshotListener listener_;
+
+    std::promise<std::unique_ptr<ListenerRegistration>> registration_promise_;
+  };
+
+  auto listener = absl::make_unique<ListenOnce>(source, std::move(callback));
+  auto listener_unowned = listener.get();
+
+  std::unique_ptr<ListenerRegistration> registration =
+      AddSnapshotListener(std::move(options), std::move(listener));
+
+  listener_unowned->Resolve(std::move(registration));
+}
+
+std::unique_ptr<ListenerRegistration> Query::AddSnapshotListener(
+    ListenOptions options, QuerySnapshotListener&& user_listener) {
+  ValidateHasExplicitOrderByForLimitToLast();
+  // Convert from ViewSnapshots to QuerySnapshots.
+  class Converter : public EventListener<ViewSnapshot> {
+   public:
+    Converter(Query* parent, QuerySnapshotListener&& user_listener)
+        : firestore_(parent->firestore()),
+          query_(parent->query()),
+          user_listener_(std::move(user_listener)) {
+    }
+
+    void OnEvent(StatusOr<ViewSnapshot> maybe_snapshot) override {
+      if (!maybe_snapshot.status().ok()) {
+        user_listener_->OnEvent(maybe_snapshot.status());
+        return;
+      }
+
+      ViewSnapshot snapshot = std::move(maybe_snapshot).ValueOrDie();
+      SnapshotMetadata metadata(snapshot.has_pending_writes(),
+                                snapshot.from_cache());
+
+      QuerySnapshot result(firestore_, query_, std::move(snapshot),
+                           std::move(metadata));
+
+      user_listener_->OnEvent(std::move(result));
+    }
+
+   private:
+    std::shared_ptr<Firestore> firestore_;
+    core::Query query_;
+    QuerySnapshotListener user_listener_;
+  };
+  auto view_listener =
+      absl::make_unique<Converter>(this, std::move(user_listener));
+
+  // Call the view_listener on the user Executor.
+  auto async_listener = AsyncEventListener<ViewSnapshot>::Create(
+      firestore_->client()->user_executor(), std::move(view_listener));
+
+  std::shared_ptr<QueryListener> query_listener =
+      firestore_->client()->ListenToQuery(this->query(), options,
+                                          async_listener);
+
+  return absl::make_unique<QueryListenerRegistration>(
+      firestore_->client(), std::move(async_listener),
+      std::move(query_listener));
+}
+
+Query Query::Filter(const FieldPath& field_path,
+                    Operator op,
+                    nanopb::SharedMessage<google_firestore_v1_Value> value,
+                    const std::function<std::string()>& type_describer) const {
+  if (field_path.IsKeyFieldPath()) {
+    if (IsArrayOperator(op)) {
+      ThrowInvalidArgument(
+          "Invalid query. You can't perform %s queries on document "
+          "ID since document IDs are not arrays.",
+          Describe(op));
+    } else if (op == Operator::In || op == Operator::NotIn) {
+      ValidateDisjunctiveFilterElements(*value, op);
+      // TODO(mutabledocuments): See if we can remove this copy and modify the
+      // input values directly.
+      auto references = MakeSharedMessage<google_firestore_v1_Value>({});
+      references->which_value_type = google_firestore_v1_Value_array_value_tag;
+      nanopb::SetRepeatedField(
+          &references->array_value.values,
+          &references->array_value.values_count,
+          absl::Span<google_firestore_v1_Value>(
+              value->array_value.values, value->array_value.values_count),
+          [&](const google_firestore_v1_Value& value) {
+            return *ParseExpectedReferenceValue(value, type_describer)
+                        .release();
+          });
+      value = std::move(references);
+    } else {
+      value = ParseExpectedReferenceValue(*value, type_describer);
+    }
+  } else {
+    if (IsDisjunctiveOperator(op)) {
+      ValidateDisjunctiveFilterElements(*value, op);
+    }
+  }
+
+  FieldFilter filter = FieldFilter::Create(field_path, op, std::move(value));
+  ValidateNewFilter(filter);
+
+  return Wrap(query_.AddingFilter(std::move(filter)));
+}
+
+Query Query::OrderBy(FieldPath field_path, bool descending) const {
+  return OrderBy(std::move(field_path), Direction::FromDescending(descending));
+}
+
+Query Query::OrderBy(FieldPath field_path, Direction direction) const {
+  ValidateNewOrderByPath(field_path);
+  if (query_.start_at()) {
+    ThrowInvalidArgument(
+        "Invalid query. You must not specify a starting point "
+        "before specifying the order by.");
+  }
+  if (query_.end_at()) {
+    ThrowInvalidArgument(
+        "Invalid query. You must not specify an ending point "
+        "before specifying the order by.");
+  }
+  return Wrap(
+      query_.AddingOrderBy(core::OrderBy(std::move(field_path), direction)));
+}
+
+Query Query::LimitToFirst(int32_t limit) const {
+  if (limit <= 0) {
+    ThrowInvalidArgument(
+        "Invalid Query. Query limit (%s) is invalid. Limit must be positive.",
+        limit);
+  }
+  return Wrap(query_.WithLimitToFirst(limit));
+}
+
+Query Query::LimitToLast(int32_t limit) const {
+  if (limit <= 0) {
+    ThrowInvalidArgument(
+        "Invalid Query. Query limit (%s) is invalid. Limit must be positive.",
+        limit);
+  }
+  return Wrap(query_.WithLimitToLast(limit));
+}
+
+Query Query::StartAt(Bound bound) const {
+  return Wrap(query_.StartingAt(std::move(bound)));
+}
+
+Query Query::EndAt(Bound bound) const {
+  return Wrap(query_.EndingAt(std::move(bound)));
+}
+
+void Query::ValidateNewFilter(const class Filter& filter) const {
+  if (filter.IsAFieldFilter()) {
+    FieldFilter field_filter(filter);
+
+    if (field_filter.IsInequality()) {
+      const FieldPath* existing_inequality = query_.InequalityFilterField();
+      const FieldPath* new_inequality = &filter.field();
+
+      if (existing_inequality && *existing_inequality != *new_inequality) {
+        ThrowInvalidArgument(
+            "Invalid Query. All where filters with an inequality (notEqual, "
+            "lessThan, lessThanOrEqual, greaterThan, or greaterThanOrEqual) "
+            "must be on the same field. But you have inequality filters on "
+            "'%s' and '%s'",
+            existing_inequality->CanonicalString(),
+            new_inequality->CanonicalString());
+      }
+
+      const FieldPath* first_order_by_field = query_.FirstOrderByField();
+      if (first_order_by_field) {
+        ValidateOrderByField(*first_order_by_field, filter.field());
+      }
+    }
+    Operator filter_op = field_filter.op();
+    absl::optional<Operator> conflicting_op =
+        query_.FindOperator(ConflictingOps(filter_op));
+
+    if (conflicting_op) {
+      // We special case when it's a duplicate op to give a slightly clearer
+      // error message.
+      if (*conflicting_op == filter_op) {
+        ThrowInvalidArgument(
+            "Invalid Query. You cannot use more than one '%s' filter.",
+            Describe(filter_op));
+      } else {
+        ThrowInvalidArgument(
+            "Invalid Query. You cannot use '%s' filters with"
+            " '%s' filters.",
+            Describe(filter_op), Describe(conflicting_op.value()));
+      }
+    }
+  }
+}
+
+void Query::ValidateNewOrderByPath(const FieldPath& field_path) const {
+  if (!query_.FirstOrderByField()) {
+    // This is the first order by. It must match any inequality.
+    const FieldPath* inequality_field = query_.InequalityFilterField();
+    if (inequality_field) {
+      ValidateOrderByField(field_path, *inequality_field);
+    }
+  }
+}
+
+void Query::ValidateOrderByField(const FieldPath& order_by_field,
+                                 const FieldPath& inequality_field) const {
+  if (order_by_field != inequality_field) {
+    ThrowInvalidArgument(
+        "Invalid query. You have a where filter with an inequality "
+        "(notEqual, lessThan, lessThanOrEqual, greaterThan, or "
+        "greaterThanOrEqual) on field '%s' and so you must also use '%s' as "
+        "your first queryOrderedBy field, but your first queryOrderedBy is "
+        "currently on field '%s' instead.",
+        inequality_field.CanonicalString(), inequality_field.CanonicalString(),
+        order_by_field.CanonicalString());
+  }
+}
+
+void Query::ValidateHasExplicitOrderByForLimitToLast() const {
+  if (query_.has_limit_to_last() && query_.explicit_order_bys().empty()) {
+    ThrowInvalidArgument(
+        "limit(toLast:) queries require specifying at least one OrderBy() "
+        "clause.");
+  }
+}
+
+void Query::ValidateDisjunctiveFilterElements(
+    const google_firestore_v1_Value& value, Operator op) const {
+  HARD_ASSERT(
+      IsArray(value),
+      "A FieldValue of Array type is required for disjunctive filters.");
+  if (value.array_value.values_count == 0) {
+    ThrowInvalidArgument(
+        "Invalid Query. A non-empty array is required for '%s'"
+        " filters.",
+        Describe(op));
+  }
+  if (value.array_value.values_count > 10) {
+    ThrowInvalidArgument(
+        "Invalid Query. '%s' filters support a maximum of 10"
+        " elements in the value array.",
+        Describe(op));
+  }
+}
+
+Message<google_firestore_v1_Value> Query::ParseExpectedReferenceValue(
+    const google_firestore_v1_Value& value,
+    const std::function<std::string()>& type_describer) const {
+  if (GetTypeOrder(value) == TypeOrder::kString) {
+    std::string document_key = nanopb::MakeString(value.string_value);
+    if (document_key.empty()) {
+      ThrowInvalidArgument(
+          "Invalid query. When querying by document ID you must provide a "
+          "valid document ID, but it was an empty string.");
+    }
+    if (!query().IsCollectionGroupQuery() &&
+        absl::StrContains(document_key, "/")) {
+      ThrowInvalidArgument(
+          "Invalid query. When querying a collection by document ID you must "
+          "provide a plain document ID, but '%s' contains a '/' character.",
+          document_key);
+    }
+    ResourcePath path =
+        query().path().Append(ResourcePath::FromString(document_key));
+    if (!DocumentKey::IsDocumentKey(path)) {
+      ThrowInvalidArgument(
+          "Invalid query. When querying a collection group by document ID, "
+          "the value provided must result in a valid document path, but '%s' "
+          "is not because it has an odd number of segments.",
+          path.CanonicalString());
+    }
+    return RefValue(firestore_->database_id(), DocumentKey{path});
+  } else if (GetTypeOrder(value) == TypeOrder::kReference) {
+    return model::DeepClone(value);
+  } else {
+    ThrowInvalidArgument(
+        "Invalid query. When querying by document ID you must provide a "
+        "valid string or DocumentReference, but it was of type: %s",
+        type_describer());
+  }
+}
+
+std::string Query::Describe(Operator op) const {
+  switch (op) {
+    case Operator::LessThan:
+      return "lessThan";
+    case Operator::LessThanOrEqual:
+      return "lessThanOrEqual";
+    case Operator::Equal:
+      return "equal";
+    case Operator::NotEqual:
+      return "notEqual";
+    case Operator::GreaterThanOrEqual:
+      return "greaterThanOrEqual";
+    case Operator::GreaterThan:
+      return "greaterThan";
+    case Operator::ArrayContains:
+      return "arrayContains";
+    case Operator::In:
+      return "in";
+    case Operator::ArrayContainsAny:
+      return "arrayContainsAny";
+    case Operator::NotIn:
+      return "notIn";
+  }
+
+  UNREACHABLE();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.h
new file mode 100644
index 0000000..54f7d16
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_core.h	
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_QUERY_CORE_H_
+#define FIRESTORE_CORE_SRC_API_QUERY_CORE_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class FieldValue;
+}  // namespace model
+
+namespace api {
+
+/**
+ * A `Query` refers to a Firestore Query which you can read or listen to. You
+ * can also construct refined `Query` objects by adding filters and ordering.
+ */
+class Query {
+ public:
+  Query() = default;
+
+  Query(core::Query query, std::shared_ptr<Firestore> firestore);
+
+  size_t Hash() const;
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+
+  const core::Query& query() const {
+    return query_;
+  }
+
+  /**
+   * Reads the documents matching this query.
+   *
+   * @param source indicates whether the results should be fetched from the
+   *     cache only (`Source::Cache`), the server only (`Source::Server`), or to
+   *     attempt the server and fall back to the cache (`Source::Default`).
+   * @param callback a callback to execute once the documents have been
+   *     successfully read.
+   */
+  void GetDocuments(Source source, QuerySnapshotListener&& callback);
+
+  /**
+   * Attaches a listener for QuerySnapshot events.
+   *
+   * @param options Whether metadata-only changes (i.e. only
+   *     `DocumentSnapshot::metadata()` changed) should trigger snapshot events.
+   * @param listener The listener to attach.
+   *
+   * @return A ListenerRegistration that can be used to remove this listener.
+   */
+  std::unique_ptr<ListenerRegistration> AddSnapshotListener(
+      core::ListenOptions options, QuerySnapshotListener&& listener);
+
+  /**
+   * Creates and returns a new `Query` with the additional filter that documents
+   * must contain the specified field and the value must be equal to the
+   * specified value.
+   *
+   * @param field_path The name of the field to compare.
+   * @param op The operator to apply.
+   * @param value The value against which to compare the field.
+   * @param type_describer A function that will produce a description of the
+   *     type of field_value.
+   *
+   * @return The created `Query`.
+   */
+  Query Filter(const model::FieldPath& field_path,
+               core::Filter::Operator op,
+               nanopb::SharedMessage<google_firestore_v1_Value> value,
+               const std::function<std::string()>& type_describer) const;
+
+  /**
+   * Creates and returns a new `Query` that's additionally sorted by the
+   * specified field.
+   *
+   * @param field_path The field to sort by.
+   * @param descending If true, sorts descending instead of ascending.
+   *
+   * @return The created `Query`.
+   */
+  Query OrderBy(model::FieldPath field_path, bool descending) const;
+
+  /**
+   * Creates and returns a new `Query` that's additionally sorted by the
+   * specified field.
+   *
+   * @param field_path The field to sort by.
+   * @param direction The direction in which to sort.
+   *
+   * @return The created `Query`.
+   */
+  Query OrderBy(model::FieldPath field_path, core::Direction direction) const;
+
+  /**
+   * Creates and returns a new `Query` that only returns the first matching
+   * documents up to the specified number.
+   *
+   * @param limit The maximum number of items to return.
+   *
+   * @return The created `Query`.
+   */
+  Query LimitToFirst(int32_t limit) const;
+
+  /**
+   * Creates and returns a new `Query` that only returns the last matching
+   * documents up to the specified number.
+   *
+   * You must specify at least one `OrderBy` clause for `LimitToLast` queries,
+   * it is an error otherwise when the query is executed.
+   *
+   * @param limit The maximum number of items to return.
+   *
+   * @return The created `Query`.
+   */
+  Query LimitToLast(int32_t limit) const;
+
+  /**
+   * Creates and returns a new `Query` that starts at the given bound.  The
+   * starting position is relative to the order of the query.  The bound must
+   * contain all of the fields provided in the orderBy of this query.
+   *
+   * @param bound The bound of the query to start at.
+   *
+   * @return The created `Query`.
+   */
+  Query StartAt(core::Bound bound) const;
+
+  /**
+   * Creates and returns a new `Query` that ends at the given bound.  The ending
+   * position is relative to the order of the query.  The bound must contain all
+   * of the fields provided in the orderBy of this query.
+   *
+   * @param bound The bound of the query to end at.
+   *
+   * @return The created `Query`.
+   */
+  Query EndAt(core::Bound bound) const;
+
+  /**
+   * Creates a new `Query` with the given internal query.
+   */
+  Query Wrap(core::Query chained_query) const {
+    return Query(std::move(chained_query), firestore_);
+  }
+
+ private:
+  void ValidateNewFilter(const core::Filter& filter) const;
+  void ValidateNewOrderByPath(const model::FieldPath& field_path) const;
+  void ValidateOrderByField(const model::FieldPath& order_by_field,
+                            const model::FieldPath& inequality_field) const;
+  void ValidateHasExplicitOrderByForLimitToLast() const;
+  /**
+   * Validates that the value passed into a disjunctive filter satisfies all
+   * array requirements.
+   */
+  void ValidateDisjunctiveFilterElements(const google_firestore_v1_Value& value,
+                                         core::Filter::Operator op) const;
+
+  /**
+   * Parses the given FieldValue into a Reference, throwing appropriate errors
+   * if the value is anything other than a Reference or String, or if the string
+   * is malformed.
+   */
+  nanopb::Message<google_firestore_v1_Value> ParseExpectedReferenceValue(
+      const google_firestore_v1_Value& value,
+      const std::function<std::string()>& type_describer) const;
+
+  std::string Describe(core::Filter::Operator op) const;
+
+  std::shared_ptr<Firestore> firestore_;
+  core::Query query_;
+};
+
+bool operator==(const Query& lhs, const Query& rhs);
+
+inline bool operator!=(const Query& lhs, const Query& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_QUERY_CORE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.cc
new file mode 100644
index 0000000..1be5b81
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.cc	
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/query_listener_registration.h"
+
+#include <utility>
+
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/query_listener.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+QueryListenerRegistration::QueryListenerRegistration(
+    std::shared_ptr<core::FirestoreClient> client,
+    std::shared_ptr<core::AsyncEventListener<core::ViewSnapshot>>
+        async_listener,
+    std::shared_ptr<core::QueryListener> query_listener)
+    : client_(std::move(client)),
+      async_listener_(std::move(async_listener)),
+      query_listener_(std::move(query_listener)) {
+}
+
+void QueryListenerRegistration::Remove() {
+  auto async_listener = async_listener_.lock();
+  if (async_listener) {
+    async_listener->Mute();
+    async_listener_.reset();
+  }
+
+  auto query_listener = query_listener_.lock();
+  if (query_listener) {
+    client_->RemoveListener(query_listener);
+    query_listener_.reset();
+  }
+
+  client_.reset();
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.h
new file mode 100644
index 0000000..0e69fac
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_listener_registration.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_QUERY_LISTENER_REGISTRATION_H_
+#define FIRESTORE_CORE_SRC_API_QUERY_LISTENER_REGISTRATION_H_
+
+#include <memory>
+
+#include "Firestore/core/src/api/listener_registration.h"
+#include "Firestore/core/src/core/core_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * An internal handle that encapsulates a user's ability to request that we
+ * stop listening to a query.
+ */
+class QueryListenerRegistration : public ListenerRegistration {
+ public:
+  QueryListenerRegistration(
+      std::shared_ptr<core::FirestoreClient> client,
+      std::shared_ptr<core::AsyncEventListener<core::ViewSnapshot>>
+          async_listener,
+      std::shared_ptr<core::QueryListener> query_listener);
+
+  /**
+   * Removes the listener being tracked by this QueryListenerRegistration.
+   */
+  void Remove() override;
+
+ private:
+  /** The client that was used to register this listen. */
+  std::shared_ptr<core::FirestoreClient> client_;
+
+  /** The async listener that is used to mute events synchronously. */
+  std::weak_ptr<core::AsyncEventListener<core::ViewSnapshot>> async_listener_;
+
+  /** The internal QueryListener that can be used to unlisten the query. */
+  std::weak_ptr<core::QueryListener> query_listener_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_QUERY_LISTENER_REGISTRATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.cc
new file mode 100644
index 0000000..e24d0fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.cc	
@@ -0,0 +1,172 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/query_snapshot.h"
+
+#include <utility>
+
+#include "Firestore/core/src/api/document_change.h"
+#include "Firestore/core/src/api/document_snapshot.h"
+#include "Firestore/core/src/api/query_core.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using api::Firestore;
+using core::DocumentViewChange;
+using core::ViewSnapshot;
+using model::Document;
+using model::DocumentComparator;
+using model::DocumentSet;
+using util::ThrowInvalidArgument;
+
+QuerySnapshot::QuerySnapshot(std::shared_ptr<Firestore> firestore,
+                             core::Query query,
+                             core::ViewSnapshot&& snapshot,
+                             SnapshotMetadata metadata)
+    : firestore_(std::move(firestore)),
+      internal_query_(std::move(query)),
+      snapshot_(std::move(snapshot)),
+      metadata_(std::move(metadata)) {
+}
+
+Query QuerySnapshot::query() const {
+  return Query(internal_query_, firestore_);
+}
+
+const core::Query& QuerySnapshot::internal_query() const {
+  return internal_query_;
+}
+
+bool operator==(const QuerySnapshot& lhs, const QuerySnapshot& rhs) {
+  return lhs.firestore_ == rhs.firestore_ &&
+         lhs.internal_query_ == rhs.internal_query_ &&
+         lhs.snapshot_ == rhs.snapshot_ && lhs.metadata_ == rhs.metadata_;
+}
+
+size_t QuerySnapshot::Hash() const {
+  return util::Hash(firestore_.get(), internal_query_, snapshot_, metadata_);
+}
+
+void QuerySnapshot::ForEachDocument(
+    const std::function<void(DocumentSnapshot)>& callback) const {
+  DocumentSet document_set = snapshot_.documents();
+  bool from_cache = metadata_.from_cache();
+
+  for (const Document& document : document_set) {
+    bool has_pending_writes =
+        snapshot_.mutated_keys().contains(document->key());
+    auto snap = DocumentSnapshot::FromDocument(
+        firestore_, document, SnapshotMetadata(has_pending_writes, from_cache));
+    callback(std::move(snap));
+  }
+}
+
+static DocumentChange::Type DocumentChangeTypeForChange(
+    const DocumentViewChange& change) {
+  switch (change.type()) {
+    case DocumentViewChange::Type::Added:
+      return DocumentChange::Type::Added;
+    case DocumentViewChange::Type::Modified:
+    case DocumentViewChange::Type::Metadata:
+      return DocumentChange::Type::Modified;
+    case DocumentViewChange::Type::Removed:
+      return DocumentChange::Type::Removed;
+  }
+
+  HARD_FAIL("Unknown DocumentViewChange::Type: %s", change.type());
+}
+
+void QuerySnapshot::ForEachChange(
+    bool include_metadata_changes,
+    const std::function<void(DocumentChange)>& callback) const {
+  if (include_metadata_changes && snapshot_.excludes_metadata_changes()) {
+    ThrowInvalidArgument(
+        "To include metadata changes with your document "
+        "changes, you must call "
+        "addSnapshotListener(includeMetadataChanges:true).");
+  }
+
+  if (snapshot_.old_documents().empty()) {
+    // Special case the first snapshot because index calculation is easy and
+    // fast. Also all changes on the first snapshot are adds so there are also
+    // no metadata-only changes to filter out.
+    DocumentComparator doc_comparator = snapshot_.query().Comparator();
+    absl::optional<Document> last_document;
+    size_t index = 0;
+    for (const DocumentViewChange& change : snapshot_.document_changes()) {
+      const Document& doc = change.document();
+      SnapshotMetadata metadata(
+          /*pending_writes=*/snapshot_.mutated_keys().contains(doc->key()),
+          /*from_cache=*/snapshot_.from_cache());
+      auto document =
+          DocumentSnapshot::FromDocument(firestore_, doc, std::move(metadata));
+
+      HARD_ASSERT(change.type() == DocumentViewChange::Type::Added,
+                  "Invalid event type for first snapshot");
+      HARD_ASSERT(!last_document || util::Ascending(doc_comparator.Compare(
+                                        *last_document, change.document())),
+                  "Got added events in wrong order");
+
+      callback(DocumentChange(DocumentChange::Type::Added, std::move(document),
+                              DocumentChange::npos, index++));
+      last_document = doc;
+    }
+
+  } else {
+    // A DocumentSet that is updated incrementally as changes are applied to use
+    // to lookup the index of a document.
+    DocumentSet index_tracker = snapshot_.old_documents();
+    for (const DocumentViewChange& change : snapshot_.document_changes()) {
+      if (!include_metadata_changes &&
+          change.type() == DocumentViewChange::Type::Metadata) {
+        continue;
+      }
+
+      const Document& doc = change.document();
+      SnapshotMetadata metadata(
+          /*pending_writes=*/snapshot_.mutated_keys().contains(doc->key()),
+          /*from_cache=*/snapshot_.from_cache());
+      auto document = DocumentSnapshot::FromDocument(firestore_, doc, metadata);
+
+      size_t old_index = DocumentChange::npos;
+      size_t new_index = DocumentChange::npos;
+      if (change.type() != DocumentViewChange::Type::Added) {
+        old_index = index_tracker.IndexOf(change.document()->key());
+        HARD_ASSERT(old_index != DocumentSet::npos,
+                    "Index for document not found");
+        index_tracker = index_tracker.erase(change.document()->key());
+      }
+      if (change.type() != DocumentViewChange::Type::Removed) {
+        index_tracker = index_tracker.insert(change.document());
+        new_index = index_tracker.IndexOf(change.document()->key());
+      }
+
+      DocumentChange::Type type = DocumentChangeTypeForChange(change);
+      callback(DocumentChange(type, std::move(document), old_index, new_index));
+    }
+  }
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.h
new file mode 100644
index 0000000..af38f12
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/query_snapshot.h	
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_QUERY_SNAPSHOT_H_
+#define FIRESTORE_CORE_SRC_API_QUERY_SNAPSHOT_H_
+
+#include <functional>
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/snapshot_metadata.h"
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * A `QuerySnapshot` contains zero or more `DocumentSnapshot` objects.
+ */
+class QuerySnapshot {
+ public:
+  QuerySnapshot(std::shared_ptr<Firestore> firestore,
+                core::Query query,
+                core::ViewSnapshot&& snapshot,
+                SnapshotMetadata metadata);
+
+  size_t Hash() const;
+
+  /**
+   * Indicates whether this `QuerySnapshot` is empty (contains no documents).
+   */
+  bool empty() const {
+    return snapshot_.documents().empty();
+  }
+
+  /** The count of documents in this `QuerySnapshot`. */
+  size_t size() const {
+    return snapshot_.documents().size();
+  }
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+
+  Query query() const;
+
+  const core::Query& internal_query() const;
+
+  /**
+   * Metadata about this snapshot, concerning its source and if it has local
+   * modifications.
+   */
+  const SnapshotMetadata& metadata() const {
+    return metadata_;
+  }
+
+  /** Iterates over the `DocumentSnapshots` that make up this query snapshot. */
+  void ForEachDocument(
+      const std::function<void(DocumentSnapshot)>& callback) const;
+
+  /**
+   * Iterates over the `DocumentChanges` representing the changes between
+   * the prior snapshot and this one.
+   */
+  void ForEachChange(bool include_metadata_changes,
+                     const std::function<void(DocumentChange)>& callback) const;
+
+  friend bool operator==(const QuerySnapshot& lhs, const QuerySnapshot& rhs);
+
+ private:
+  std::shared_ptr<Firestore> firestore_;
+  core::Query internal_query_;
+  core::ViewSnapshot snapshot_;
+  SnapshotMetadata metadata_;
+};
+
+using QuerySnapshotListener =
+    std::unique_ptr<core::EventListener<QuerySnapshot>>;
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_QUERY_SNAPSHOT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.cc
new file mode 100644
index 0000000..2037b58
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.cc	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/settings.h"
+
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+constexpr const char* Settings::DefaultHost;
+constexpr bool Settings::DefaultSslEnabled;
+constexpr bool Settings::DefaultPersistenceEnabled;
+constexpr int64_t Settings::DefaultCacheSizeBytes;
+constexpr int64_t Settings::MinimumCacheSizeBytes;
+
+size_t Settings::Hash() const {
+  return util::Hash(host_, ssl_enabled_, persistence_enabled_,
+                    cache_size_bytes_);
+}
+
+bool operator==(const Settings& lhs, const Settings& rhs) {
+  return lhs.host_ == rhs.host_ && lhs.ssl_enabled_ == rhs.ssl_enabled_ &&
+         lhs.persistence_enabled_ == rhs.persistence_enabled_ &&
+         lhs.cache_size_bytes_ == rhs.cache_size_bytes_;
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.h
new file mode 100644
index 0000000..6e9fe1f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/settings.h	
@@ -0,0 +1,92 @@
+
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_SETTINGS_H_
+#define FIRESTORE_CORE_SRC_API_SETTINGS_H_
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * Represents settings associated with a FirestoreClient.
+ *
+ * PORTING NOTE: We exclude the user callback std::executor in order to avoid
+ * ownership complexity.
+ */
+class Settings {
+ public:
+  // Note: a constexpr array of char (`char[]`) doesn't work with Visual Studio
+  // 2015.
+  static constexpr const char* DefaultHost = "firestore.googleapis.com";
+  static constexpr bool DefaultSslEnabled = true;
+  static constexpr bool DefaultPersistenceEnabled = true;
+  static constexpr int64_t DefaultCacheSizeBytes = 100 * 1024 * 1024;
+  static constexpr int64_t MinimumCacheSizeBytes = 1 * 1024 * 1024;
+  static constexpr int64_t CacheSizeUnlimited = -1;
+
+  Settings() = default;
+
+  void set_host(const std::string& value) {
+    host_ = value;
+  }
+  const std::string& host() const {
+    return host_;
+  }
+
+  void set_ssl_enabled(bool value) {
+    ssl_enabled_ = value;
+  }
+  bool ssl_enabled() const {
+    return ssl_enabled_;
+  }
+
+  void set_persistence_enabled(bool value) {
+    persistence_enabled_ = value;
+  }
+  bool persistence_enabled() const {
+    return persistence_enabled_;
+  }
+
+  void set_cache_size_bytes(int64_t value) {
+    cache_size_bytes_ = value;
+  }
+  int64_t cache_size_bytes() const {
+    return cache_size_bytes_;
+  }
+  bool gc_enabled() const {
+    return cache_size_bytes_ != CacheSizeUnlimited;
+  }
+
+  friend bool operator==(const Settings& lhs, const Settings& rhs);
+
+  size_t Hash() const;
+
+ private:
+  std::string host_ = DefaultHost;
+  bool ssl_enabled_ = DefaultSslEnabled;
+  bool persistence_enabled_ = DefaultPersistenceEnabled;
+  int64_t cache_size_bytes_ = DefaultCacheSizeBytes;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_SETTINGS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.cc
new file mode 100644
index 0000000..a380a33
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.cc	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/snapshot_metadata.h"
+
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+bool operator==(const SnapshotMetadata& lhs, const SnapshotMetadata& rhs) {
+  return lhs.pending_writes_ == rhs.pending_writes_ &&
+         lhs.from_cache_ == rhs.from_cache_;
+}
+
+size_t SnapshotMetadata::Hash() const {
+  return util::Hash(pending_writes_, from_cache_);
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.h
new file mode 100644
index 0000000..9965436
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshot_metadata.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_SNAPSHOT_METADATA_H_
+#define FIRESTORE_CORE_SRC_API_SNAPSHOT_METADATA_H_
+
+#include <cstddef>
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/** Metadata about a snapshot, describing the state of the snapshot. */
+class SnapshotMetadata {
+ public:
+  SnapshotMetadata() = default;
+  SnapshotMetadata(bool pending_writes, bool from_cache)
+      : pending_writes_(pending_writes), from_cache_(from_cache) {
+  }
+
+  /**
+   * Returns true if the snapshot contains the result of local writes (e.g.
+   * set() or update() calls) that have not yet been committed to the backend.
+   */
+  bool pending_writes() const {
+    return pending_writes_;
+  }
+
+  /**
+   * Returns true if the snapshot was created from cached data rather than
+   * guaranteed up-to-date server data.
+   */
+  bool from_cache() const {
+    return from_cache_;
+  }
+
+  friend bool operator==(const SnapshotMetadata& lhs,
+                         const SnapshotMetadata& rhs);
+
+  size_t Hash() const;
+
+ private:
+  bool pending_writes_ = false;
+  bool from_cache_ = false;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_SNAPSHOT_METADATA_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.cc
new file mode 100644
index 0000000..debe56b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.cc	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/snapshots_in_sync_listener_registration.h"
+
+#include <utility>
+
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/core/firestore_client.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+SnapshotsInSyncListenerRegistration::SnapshotsInSyncListenerRegistration(
+    std::shared_ptr<core::FirestoreClient> client,
+    std::shared_ptr<core::AsyncEventListener<util::Empty>> async_listener)
+    : client_(std::move(client)), async_listener_(std::move(async_listener)) {
+}
+
+void SnapshotsInSyncListenerRegistration::Remove() {
+  auto async_listener = async_listener_.lock();
+  if (async_listener) {
+    async_listener->Mute();
+    async_listener_.reset();
+
+    if (client_) {
+      client_->RemoveSnapshotsInSyncListener(async_listener);
+      client_.reset();
+    }
+  }
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.h
new file mode 100644
index 0000000..7c9131b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/snapshots_in_sync_listener_registration.h	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_SNAPSHOTS_IN_SYNC_LISTENER_REGISTRATION_H_
+#define FIRESTORE_CORE_SRC_API_SNAPSHOTS_IN_SYNC_LISTENER_REGISTRATION_H_
+
+#include <memory>
+
+#include "Firestore/core/src/api/listener_registration.h"
+#include "Firestore/core/src/core/core_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * An internal handle that encapsulates a user's ability to request that we
+ * stop listening to the snapshots-in-sync listener. When a user calls Remove(),
+ * SnapshotsInSyncListenerRegistration will synchronously mute the listener and
+ * then send a request to actually unlisten.
+ */
+class SnapshotsInSyncListenerRegistration : public ListenerRegistration {
+ public:
+  SnapshotsInSyncListenerRegistration(
+      std::shared_ptr<core::FirestoreClient> client,
+      std::shared_ptr<core::AsyncEventListener<util::Empty>> async_listener);
+
+  /**
+   * Removes the listener being tracked by this FIRListenerRegistration. After
+   * the initial call, subsequent calls have no effect.
+   */
+  void Remove() override;
+
+ private:
+  /** The client that was used to register this listen. */
+  std::shared_ptr<core::FirestoreClient> client_;
+
+  /** The async listener that is used to mute events synchronously. */
+  std::weak_ptr<core::AsyncEventListener<util::Empty>> async_listener_;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_SNAPSHOTS_IN_SYNC_LISTENER_REGISTRATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/source.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/source.h
new file mode 100644
index 0000000..3c3c0c2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/source.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_SOURCE_H_
+#define FIRESTORE_CORE_SRC_API_SOURCE_H_
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+/**
+ * An enum that configures the behavior of `DocumentReference.GetDocument()` and
+ * `Query.GetDocuments()`. By providing a source enum the `GetDocument[s]`
+ * methods can be configured to fetch results only from the server, only from
+ * the local cache, or attempt to fetch results from the server and fall back to
+ * the cache (which is the default).
+ *
+ * See `FIRFirestoreSource` for more details.
+ */
+enum class Source { Default, Server, Cache };
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_SOURCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.cc
new file mode 100644
index 0000000..2ff4829
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.cc	
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/api/write_batch.h"
+
+#include <algorithm>
+
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/firestore.h"
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/core/firestore_client.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/delete_mutation.h"
+#include "Firestore/core/src/util/exception.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+using model::DeleteMutation;
+using model::Precondition;
+using util::ThrowIllegalState;
+using util::ThrowInvalidArgument;
+
+void WriteBatch::SetData(const DocumentReference& reference,
+                         core::ParsedSetData&& set_data) {
+  VerifyNotCommitted();
+  ValidateReference(reference);
+
+  mutations_.push_back(std::move(set_data).ToMutation(
+      reference.key(), model::Precondition::None()));
+}
+
+void WriteBatch::UpdateData(const DocumentReference& reference,
+                            core::ParsedUpdateData&& update_data) {
+  VerifyNotCommitted();
+  ValidateReference(reference);
+
+  mutations_.push_back(
+      std::move(update_data)
+          .ToMutation(reference.key(), model::Precondition::Exists(true)));
+}
+
+void WriteBatch::DeleteData(const DocumentReference& reference) {
+  VerifyNotCommitted();
+  ValidateReference(reference);
+
+  mutations_.push_back(DeleteMutation(reference.key(), Precondition::None()));
+}
+
+void WriteBatch::Commit(util::StatusCallback callback) {
+  VerifyNotCommitted();
+
+  committed_ = true;
+  firestore_->client()->WriteMutations(std::move(mutations_),
+                                       std::move(callback));
+}
+
+void WriteBatch::VerifyNotCommitted() const {
+  if (committed_) {
+    ThrowIllegalState(
+        "A write batch can no longer be used after commit has been called.");
+  }
+}
+
+void WriteBatch::ValidateReference(const DocumentReference& reference) const {
+  if (reference.firestore() != firestore_) {
+    ThrowInvalidArgument(
+        "Provided document reference is from a different Cloud Firestore "
+        "instance.");
+  }
+}
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.h
new file mode 100644
index 0000000..8f7397e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/api/write_batch.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_API_WRITE_BATCH_H_
+#define FIRESTORE_CORE_SRC_API_WRITE_BATCH_H_
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class WriteBatch {
+ public:
+  explicit WriteBatch(std::shared_ptr<Firestore> firestore)
+      : firestore_{std::move(firestore)} {
+  }
+
+  void SetData(const DocumentReference& reference,
+               core::ParsedSetData&& set_data);
+  void UpdateData(const DocumentReference& reference,
+                  core::ParsedUpdateData&& update_data);
+  void DeleteData(const DocumentReference& reference);
+
+  void Commit(util::StatusCallback callback);
+
+  const std::shared_ptr<Firestore>& firestore() const {
+    return firestore_;
+  }
+
+ private:
+  std::shared_ptr<Firestore> firestore_;
+  std::vector<model::Mutation> mutations_;
+  bool committed_ = false;
+
+  void VerifyNotCommitted() const;
+  void ValidateReference(const DocumentReference& reference) const;
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_API_WRITE_BATCH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.cc
new file mode 100644
index 0000000..0a6c9c9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.cc	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/auth/credentials_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+CredentialsProvider::CredentialsProvider() : change_listener_(nullptr) {
+}
+
+CredentialsProvider::~CredentialsProvider() = default;
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.h
new file mode 100644
index 0000000..a84c452
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/credentials_provider.h	
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_AUTH_CREDENTIALS_PROVIDER_H_
+#define FIRESTORE_CORE_SRC_AUTH_CREDENTIALS_PROVIDER_H_
+
+#include <functional>
+#include <string>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/auth/user.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+// `TokenErrorListener` is a listener that gets a token or an error.
+using TokenListener = std::function<void(util::StatusOr<Token>)>;
+
+// Listener notified with a credential change.
+using CredentialChangeListener = std::function<void(User user)>;
+
+/**
+ * Provides methods for getting the uid and token for the current user and
+ * listen for changes.
+ */
+class CredentialsProvider {
+ public:
+  CredentialsProvider();
+
+  virtual ~CredentialsProvider();
+
+  /** Requests token for the current user. */
+  virtual void GetToken(TokenListener completion) = 0;
+
+  /**
+   * Marks the last retrieved token as invalid, making the next `GetToken`
+   * request force refresh the token.
+   */
+  virtual void InvalidateToken() = 0;
+
+  /**
+   * Sets the listener to be notified of credential changes (sign-in /
+   * sign-out, token changes). It is immediately called once with the initial
+   * user.
+   *
+   * Call with nullptr to remove previous listener.
+   */
+  virtual void SetCredentialChangeListener(
+      CredentialChangeListener change_listener) = 0;
+
+ protected:
+  /**
+   * A listener to be notified of credential changes (sign-in / sign-out, token
+   * changes). It is immediately called once with the initial user.
+   *
+   * Note that this block will be called back on an arbitrary thread that is not
+   * the normal Firestore worker thread.
+   */
+  CredentialChangeListener change_listener_;
+};
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_AUTH_CREDENTIALS_PROVIDER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.cc
new file mode 100644
index 0000000..6277d86
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.cc	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/auth/empty_credentials_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+void EmptyCredentialsProvider::GetToken(TokenListener completion) {
+  if (completion) {
+    // Unauthenticated token will force the GRPC fallback to use default
+    // settings.
+    completion(Token::Unauthenticated());
+  }
+}
+
+void EmptyCredentialsProvider::SetCredentialChangeListener(
+    CredentialChangeListener change_listener) {
+  if (change_listener) {
+    change_listener(User::Unauthenticated());
+  }
+}
+
+void EmptyCredentialsProvider::InvalidateToken() {
+}
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.h
new file mode 100644
index 0000000..83e1464
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/empty_credentials_provider.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_AUTH_EMPTY_CREDENTIALS_PROVIDER_H_
+#define FIRESTORE_CORE_SRC_AUTH_EMPTY_CREDENTIALS_PROVIDER_H_
+
+#include "Firestore/core/src/auth/credentials_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+/** `EmptyCredentialsProvider` always yields an empty token. */
+class EmptyCredentialsProvider : public CredentialsProvider {
+ public:
+  void GetToken(TokenListener completion) override;
+  void InvalidateToken() override;
+  void SetCredentialChangeListener(
+      CredentialChangeListener change_listener) override;
+};
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_AUTH_EMPTY_CREDENTIALS_PROVIDER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.h
new file mode 100644
index 0000000..ad2f415
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.h	
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_AUTH_FIREBASE_CREDENTIALS_PROVIDER_APPLE_H_
+#define FIRESTORE_CORE_SRC_AUTH_FIREBASE_CREDENTIALS_PROVIDER_APPLE_H_
+
+#if !defined(__OBJC__)
+#error "This header only supports Objective-C++."
+#endif  // !defined(__OBJC__)
+
+#import <Foundation/Foundation.h>
+
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <utility>
+
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/auth/user.h"
+#include "absl/strings/string_view.h"
+
+@class FIRApp;
+@protocol FIRAuthInterop;
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+/**
+ * `FirebaseCredentialsProvider` uses Firebase Auth via `FIRApp` to get an auth
+ * token.
+ *
+ * NOTE: To simplify the implementation, it requires that you call
+ * `SetCredentialChangeListener()` with a non-nullptr value no more than once
+ * and don't call `GetToken()` after setting it to `nullptr`.
+ *
+ * This class must be implemented in a thread-safe manner since it is accessed
+ * from the thread backing our internal worker queue and the callbacks from
+ * FIRAuth will be executed on an arbitrary different thread.
+ *
+ * For non-Apple desktop build, this is right now just a stub.
+ */
+class FirebaseCredentialsProvider : public CredentialsProvider {
+ public:
+  // TODO(zxu123): Provide a ctor to accept the C++ Firebase Games App, which
+  // deals all platforms. Right now, only works for FIRApp*.
+  /**
+   * Initializes a new FirebaseCredentialsProvider.
+   *
+   * @param app The Firebase app instance associated with the credentials
+   *            received.
+   * @param auth The auth instance from which to get credentials.
+   */
+  explicit FirebaseCredentialsProvider(FIRApp* app, id<FIRAuthInterop> auth);
+
+  ~FirebaseCredentialsProvider() override;
+
+  void GetToken(TokenListener completion) override;
+
+  void SetCredentialChangeListener(
+      CredentialChangeListener change_listener) override;
+
+  void InvalidateToken() override;
+
+ private:
+  /**
+   * Most contents of the FirebaseCredentialProvider are kept in this
+   * Contents object and pointed to with a shared pointer. Callbacks
+   * registered with FirebaseAuth use weak pointers to the Contents to
+   * avoid races between notifications arriving and C++ object destruction.
+   */
+  struct Contents {
+    Contents(FIRApp* app, id<FIRAuthInterop> auth, User&& user)
+        : app(app), auth(auth), current_user(std::move(user)) {
+    }
+
+    const FIRApp* app;
+
+    const id<FIRAuthInterop> auth;
+
+    /**
+     * The current user as reported to us via our AuthStateDidChangeListener.
+     */
+    User current_user;
+
+    /**
+     * Counter used to detect if the token changed while a GetToken() request
+     * was outstanding.
+     */
+    int token_counter = 0;
+
+    std::mutex mutex;
+
+    bool force_refresh = false;
+  };
+
+  /**
+   * Handle used to stop receiving auth changes once CredentialChangeListener is
+   * removed.
+   */
+  id<NSObject> auth_listener_handle_;
+
+  std::shared_ptr<Contents> contents_;
+};
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_AUTH_FIREBASE_CREDENTIALS_PROVIDER_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.mm
new file mode 100644
index 0000000..ebba710
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/firebase_credentials_provider_apple.mm	
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/auth/firebase_credentials_provider_apple.h"
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+#import "Interop/Auth/Public/FIRAuthInterop.h"
+
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+FirebaseCredentialsProvider::FirebaseCredentialsProvider(
+    FIRApp* app, id<FIRAuthInterop> auth) {
+  contents_ =
+      std::make_shared<Contents>(app, auth, User::FromUid([auth getUserID]));
+  std::weak_ptr<Contents> weak_contents = contents_;
+
+  auth_listener_handle_ = [[NSNotificationCenter defaultCenter]
+      addObserverForName:FIRAuthStateDidChangeInternalNotification
+                  object:nil
+                   queue:nil
+              usingBlock:^(NSNotification* notification) {
+                std::shared_ptr<Contents> contents = weak_contents.lock();
+                if (!contents) {
+                  return;
+                }
+
+                std::unique_lock<std::mutex> lock(contents->mutex);
+                NSDictionary<NSString*, id>* user_info = notification.userInfo;
+
+                // ensure we're only notifying for the current app.
+                FIRApp* notified_app =
+                    user_info[FIRAuthStateDidChangeInternalNotificationAppKey];
+                if (![contents->app isEqual:notified_app]) {
+                  return;
+                }
+
+                NSString* user_id =
+                    user_info[FIRAuthStateDidChangeInternalNotificationUIDKey];
+                contents->current_user = User::FromUid(user_id);
+                contents->token_counter++;
+                CredentialChangeListener listener = change_listener_;
+                if (listener) {
+                  listener(contents->current_user);
+                }
+              }];
+}
+
+FirebaseCredentialsProvider::~FirebaseCredentialsProvider() {
+  if (auth_listener_handle_) {
+    // Even though iOS 9 (and later) and macOS 10.11 (and later) keep a weak
+    // reference to the observer so we could avoid this removeObserver call, we
+    // still support iOS 8 which requires it.
+    [[NSNotificationCenter defaultCenter] removeObserver:auth_listener_handle_];
+  }
+}
+
+void FirebaseCredentialsProvider::GetToken(TokenListener completion) {
+  HARD_ASSERT(auth_listener_handle_,
+              "GetToken cannot be called after listener removed.");
+
+  // Take note of the current value of the token_counter so that this method can
+  // fail if there is a token change while the request is outstanding.
+  int initial_token_counter = contents_->token_counter;
+
+  std::weak_ptr<Contents> weak_contents = contents_;
+  void (^get_token_callback)(NSString*, NSError*) = ^(
+      NSString* _Nullable token, NSError* _Nullable error) {
+    std::shared_ptr<Contents> contents = weak_contents.lock();
+    if (!contents) {
+      return;
+    }
+
+    std::unique_lock<std::mutex> lock(contents->mutex);
+    if (initial_token_counter != contents->token_counter) {
+      // Cancel the request since the user changed while the request was
+      // outstanding so the response is likely for a previous user (which
+      // user, we can't be sure).
+      LOG_DEBUG("GetToken aborted due to token change.");
+      return GetToken(completion);
+    } else {
+      if (error == nil) {
+        if (token != nil) {
+          completion(Token{util::MakeString(token), contents->current_user});
+        } else {
+          completion(Token::Unauthenticated());
+        }
+      } else {
+        Error error_code = Error::kErrorUnknown;
+        if (error.domain == FIRFirestoreErrorDomain) {
+          error_code = static_cast<Error>(error.code);
+        }
+        completion(util::Status(error_code,
+                                util::MakeString(error.localizedDescription)));
+      }
+    }
+  };
+
+  // TODO(wilhuff): Need a better abstraction over a missing auth provider.
+  if (contents_->auth) {
+    [contents_->auth getTokenForcingRefresh:contents_->force_refresh
+                               withCallback:get_token_callback];
+  } else {
+    // If there's no Auth provider, call back immediately with a nil
+    // (unauthenticated) token.
+    get_token_callback(nil, nil);
+  }
+  contents_->force_refresh = false;
+}
+
+void FirebaseCredentialsProvider::InvalidateToken() {
+  contents_->force_refresh = true;
+}
+
+void FirebaseCredentialsProvider::SetCredentialChangeListener(
+    CredentialChangeListener change_listener) {
+  std::unique_lock<std::mutex> lock(contents_->mutex);
+  if (change_listener) {
+    HARD_ASSERT(!change_listener_, "set change_listener twice!");
+    // Fire initial event.
+    change_listener(contents_->current_user);
+  } else {
+    HARD_ASSERT(auth_listener_handle_, "removed change_listener twice!");
+    HARD_ASSERT(change_listener_, "change_listener removed without being set!");
+    [[NSNotificationCenter defaultCenter] removeObserver:auth_listener_handle_];
+    auth_listener_handle_ = nil;
+  }
+  change_listener_ = change_listener;
+}
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.cc
new file mode 100644
index 0000000..d131db3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.cc	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/auth/token.h"
+
+#include <utility>
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+Token::Token(std::string token, User user)
+    : token_{std::move(token)}, user_{std::move(user)} {
+}
+
+const std::string& Token::token() const {
+  HARD_ASSERT(user_.is_authenticated());
+  return token_;
+}
+
+const Token& Token::Unauthenticated() {
+  static const Token kUnauthenticatedToken(std::string{},
+                                           User::Unauthenticated());
+  return kUnauthenticatedToken;
+}
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.h
new file mode 100644
index 0000000..87778a1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/token.h	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_AUTH_TOKEN_H_
+#define FIRESTORE_CORE_SRC_AUTH_TOKEN_H_
+
+#include <string>
+
+#include "Firestore/core/src/auth/user.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+/**
+ * The current User and the authentication token provided by the underlying
+ * authentication mechanism. This is the result of calling
+ * CredentialsProvider::GetToken().
+ *
+ * ## Portability notes: no TokenType on iOS
+ *
+ * The TypeScript client supports 1st party Oauth tokens (for the Firebase
+ * Console to auth as the developer) and OAuth2 tokens for the node.js sdk to
+ * auth with a service account. We don't have plans to support either case on
+ * mobile so there's no TokenType here.
+ */
+// TODO(zxu123): Make this support token-type for desktop workflow.
+class Token {
+ public:
+  Token(std::string token, User user);
+
+  /** The actual raw token. */
+  const std::string& token() const;
+
+  /**
+   * The user with which the token is associated (used for persisting user
+   * state on disk, etc.).
+   */
+  const User& user() const {
+    return user_;
+  }
+
+  /**
+   * Returns a token for an unauthenticated user.
+   *
+   * ## Portability notes: An unauthenticated token is the equivalent of
+   * nil/null in the iOS/TypeScript token implementation. We use a reference
+   * instead of a pointer for Token instances in the C++ migration.
+   */
+  static const Token& Unauthenticated();
+
+ private:
+  const std::string token_;
+  const User user_;
+};
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_AUTH_TOKEN_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.cc
new file mode 100644
index 0000000..9b0dfd7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.cc	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/auth/user.h"
+
+#include <utility>
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+User::User() : is_authenticated_{false} {
+}
+
+User::User(std::string uid) : uid_{std::move(uid)}, is_authenticated_{true} {
+  HARD_ASSERT(!uid_.empty());
+}
+
+const User& User::Unauthenticated() {
+  static const User* kUnauthenticated = new User();
+  return *kUnauthenticated;
+}
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.h
new file mode 100644
index 0000000..04c68ca
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/auth/user.h	
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_AUTH_USER_H_
+#define FIRESTORE_CORE_SRC_AUTH_USER_H_
+
+#if defined(__OBJC__)
+#import <Foundation/Foundation.h>
+#include "Firestore/core/src/util/string_apple.h"
+#endif  // defined(__OBJC__)
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+/**
+ * Simple wrapper around a nullable UID. Mostly exists to make code more
+ * readable and for compatibility with other clients where map keys cannot be
+ * null.
+ */
+class User {
+ public:
+  /** Construct an unauthenticated user. */
+  User();
+
+  /** Construct an authenticated user with the given UID. */
+  explicit User(std::string uid);
+
+  const std::string& uid() const {
+    return uid_;
+  }
+
+  // PORTING NOTE: Here use more clear naming is_authenticated() instead of
+  // is_unauthenticated().
+  bool is_authenticated() const {
+    return is_authenticated_;
+  }
+
+  /** Returns an unauthenticated instance. */
+  static const User& Unauthenticated();
+
+#if defined(__OBJC__)
+  /**
+   * Returns an authenticated user if uid is non-nil, otherwise an
+   * unauthenticated user.
+   */
+  static User FromUid(NSString* _Nullable uid) {
+    if (uid == nil) {
+      return Unauthenticated();
+    } else {
+      return User{util::MakeString(uid)};
+    }
+  }
+#endif  // defined(__OBJC__)
+
+  User& operator=(const User& other) = default;
+
+  friend bool operator==(const User& lhs, const User& rhs);
+
+ private:
+  std::string uid_;
+  bool is_authenticated_;
+};
+
+inline bool operator==(const User& lhs, const User& rhs) {
+  return lhs.is_authenticated_ == rhs.is_authenticated_ &&
+         (!lhs.is_authenticated_ || lhs.uid_ == rhs.uid_);
+}
+
+inline bool operator!=(const User& lhs, const User& rhs) {
+  return !(lhs == rhs);
+}
+
+// Specializations of std::hash is prohibited. We define a hash function to be
+// passed through manually.
+struct HashUser {
+  inline int64_t operator()(const User& user) const {
+    return std::hash<std::string>{}(user.uid());
+  }
+};
+
+}  // namespace auth
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_AUTH_USER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_callback.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_callback.h
new file mode 100644
index 0000000..2ce01de
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_callback.h	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_CALLBACK_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_CALLBACK_H_
+
+#include <string>
+
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Interface implemented by components that can apply changes from a bundle to
+ * local storage.
+ */
+class BundleCallback {
+ public:
+  virtual ~BundleCallback() = default;
+
+  /**
+   * Applies the documents from a bundle to the "ground-state" (remote)
+   * documents.
+   *
+   * Local documents are re-calculated if there are remaining mutations in the
+   * queue.
+   */
+  virtual model::DocumentMap ApplyBundledDocuments(
+      const model::MutableDocumentMap& documents,
+      const std::string& bundle_id) = 0;
+
+  /** Saves the given NamedQuery to local persistence. */
+  virtual void SaveNamedQuery(const NamedQuery& query,
+                              const model::DocumentKeySet& keys) = 0;
+
+  /** Saves the given BundleMetadata to local persistence. */
+  virtual void SaveBundle(const BundleMetadata& metadata) = 0;
+};
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_CALLBACK_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_document.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_document.h
new file mode 100644
index 0000000..338b3e6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_document.h	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_DOCUMENT_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_DOCUMENT_H_
+
+#include <utility>
+
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/model/mutable_document.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/** Represents a document that was saved to a bundle. */
+class BundleDocument : public BundleElement {
+ public:
+  BundleDocument() = default;
+
+  explicit BundleDocument(model::MutableDocument document)
+      : document_(std::move(document)) {
+  }
+
+  Type element_type() const override {
+    return Type::Document;
+  }
+
+  /** Returns the key for this document. */
+  const model::DocumentKey& key() const {
+    return document_.key();
+  }
+
+  /** Returns the document. */
+  const model::MutableDocument& document() const {
+    return document_;
+  }
+
+ private:
+  model::MutableDocument document_;
+};
+
+inline bool operator==(const BundleDocument& lhs, const BundleDocument& rhs) {
+  return lhs.document() == rhs.document();
+}
+
+inline bool operator!=(const BundleDocument& lhs, const BundleDocument& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_DOCUMENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_element.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_element.h
new file mode 100644
index 0000000..5c4ddf4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_element.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_ELEMENT_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_ELEMENT_H_
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Abstract class to give all elements from bundles a common type.
+ */
+class BundleElement {
+ public:
+  enum class Type { Metadata, NamedQuery, DocumentMetadata, Document };
+
+  virtual ~BundleElement() = default;
+
+  virtual Type element_type() const = 0;
+};
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_ELEMENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.cc
new file mode 100644
index 0000000..5f56ddc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.cc	
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/bundle/bundle_loader.h"
+
+#include <memory>
+#include <unordered_map>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/bundle/bundle_document.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutable_document.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+using firestore::Error;
+using firestore::api::LoadBundleTaskProgress;
+using firestore::api::LoadBundleTaskState;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::MutableDocument;
+using util::Status;
+using util::StatusOr;
+
+Status BundleLoader::AddElementInternal(const BundleElement& element) {
+  HARD_ASSERT(element.element_type() != BundleElement::Type::Metadata,
+              "Unexpected bundle metadata element.");
+
+  switch (element.element_type()) {
+    case BundleElement::Type::NamedQuery: {
+      queries_.push_back(static_cast<const NamedQuery&>(element));
+      break;
+    }
+
+    case BundleElement::Type::DocumentMetadata: {
+      const auto& document_metadata =
+          static_cast<const BundledDocumentMetadata&>(element);
+      current_document_ = document_metadata.key();
+      documents_metadata_.emplace(document_metadata.key(), document_metadata);
+
+      if (!document_metadata.exists()) {
+        documents_ = documents_.insert(
+            document_metadata.key(),
+            MutableDocument::NoDocument(document_metadata.key(),
+                                        document_metadata.read_time()));
+        current_document_ = absl::nullopt;
+      }
+      break;
+    }
+
+    case BundleElement::Type::Document: {
+      const auto& document = static_cast<const BundleDocument&>(element);
+      if (!current_document_.has_value() ||
+          document.key() != current_document_.value()) {
+        return {Status(
+            Error::kErrorInvalidArgument,
+            "The document being added does not match the stored metadata.")};
+      }
+
+      documents_ = documents_.insert(document.key(), document.document());
+      current_document_ = absl::nullopt;
+      break;
+    }
+
+    default:
+      // It is impossible to reach here, because Type::Metadata is checked at
+      // the beginning of the method.
+      UNREACHABLE();
+  }
+
+  return Status::OK();
+}
+
+StatusOr<absl::optional<LoadBundleTaskProgress>> BundleLoader::AddElement(
+    std::unique_ptr<BundleElement> element_ptr, uint64_t byte_size) {
+  HARD_ASSERT(element_ptr->element_type() != BundleElement::Type::Metadata,
+              "Unexpected bundle metadata element.");
+
+  auto before_count = documents_.size();
+
+  auto result = AddElementInternal(*element_ptr);
+  if (!result.ok()) {
+    return result;
+  }
+
+  bytes_loaded_ += byte_size;
+
+  // Document has only been partially loaded, no progress to report.
+  if (before_count == documents_.size()) {
+    return {absl::nullopt};
+  }
+
+  LoadBundleTaskProgress progress{
+      documents_.size(), metadata_.total_documents(), bytes_loaded_,
+      metadata_.total_bytes(), LoadBundleTaskState::kInProgress};
+  return {absl::make_optional(std::move(progress))};
+}
+
+StatusOr<DocumentMap> BundleLoader::ApplyChanges() {
+  if (current_document_ != absl::nullopt) {
+    return StatusOr<DocumentMap>(
+        Status(Error::kErrorInvalidArgument,
+               "Bundled documents end with a document metadata "
+               "element instead of a document."));
+  }
+  if (metadata_.total_documents() != documents_.size()) {
+    return StatusOr<DocumentMap>(
+        Status(Error::kErrorInvalidArgument,
+               "Loaded documents count is not the same as in metadata."));
+  }
+
+  auto changes =
+      callback_->ApplyBundledDocuments(documents_, metadata_.bundle_id());
+  auto query_document_map = GetQueryDocumentMapping();
+  for (const auto& named_query : queries_) {
+    const auto& matching_keys = query_document_map[named_query.query_name()];
+    callback_->SaveNamedQuery(named_query, matching_keys);
+  }
+
+  callback_->SaveBundle(metadata_);
+
+  return changes;
+}
+
+std::unordered_map<std::string, DocumentKeySet>
+BundleLoader::GetQueryDocumentMapping() {
+  std::unordered_map<std::string, DocumentKeySet> result;
+  for (const auto& named_query : queries_) {
+    result.emplace(named_query.query_name(), DocumentKeySet{});
+  }
+
+  for (const auto& doc_metadata : documents_metadata_) {
+    const auto& metadata = doc_metadata.second;
+    for (const auto& query : doc_metadata.second.queries()) {
+      auto inserted = result[query].insert(metadata.key());
+      result[query] = std::move(inserted);
+    }
+  }
+
+  return result;
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.h
new file mode 100644
index 0000000..9a0bb02
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_loader.h	
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_LOADER_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_LOADER_H_
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/bundle/bundle_callback.h"
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/bundle/bundled_document_metadata.h"
+#include "Firestore/core/src/immutable/sorted_map.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+inline api::LoadBundleTaskProgress SuccessProgress(
+    const bundle::BundleMetadata& metadata) {
+  return {metadata.total_documents(), metadata.total_documents(),
+          metadata.total_bytes(), metadata.total_bytes(),
+          api::LoadBundleTaskState::kSuccess};
+}
+
+inline api::LoadBundleTaskProgress InitialProgress(
+    const bundle::BundleMetadata& metadata) {
+  return {0, metadata.total_documents(), 0, metadata.total_bytes(),
+          api::LoadBundleTaskState::kInProgress};
+}
+
+class BundleLoader {
+ public:
+  using AddElementResult =
+      util::StatusOr<absl::optional<api::LoadBundleTaskProgress>>;
+
+  BundleLoader(BundleCallback* callback, BundleMetadata metadata)
+      : callback_(callback), metadata_(std::move(metadata)) {
+  }
+
+  /**
+   * Adds an element from the bundle to the loader.
+   *
+   * @return a new progress if adding the element leads to a new progress,
+   * otherwise returns `nullopt`. If an error occurred, returns a not `ok()`
+   * status.
+   */
+  AddElementResult AddElement(std::unique_ptr<BundleElement> element,
+                              uint64_t byte_size);
+
+  /**
+   * Applies the loaded documents and queries to local store. Returns the
+   * document view changes. If an error occurred, returns a not `ok()` status.
+   */
+  util::StatusOr<model::DocumentMap> ApplyChanges();
+
+ private:
+  /**
+   * @return A map whose keys are the query names in the loading bundle, and
+   * values are matching document keys.
+   */
+  std::unordered_map<std::string, model::DocumentKeySet>
+  GetQueryDocumentMapping();
+
+  /**
+   * Adds the given BundleElement to the internal containers, depending on the
+   * element type.
+   */
+  util::Status AddElementInternal(const BundleElement& element);
+
+  BundleCallback* callback_ = nullptr;
+  BundleMetadata metadata_;
+  std::vector<NamedQuery> queries_;
+  std::unordered_map<model::DocumentKey,
+                     BundledDocumentMetadata,
+                     model::DocumentKeyHash>
+      documents_metadata_;
+  model::MutableDocumentMap documents_;
+
+  uint64_t bytes_loaded_ = 0;
+  absl::optional<model::DocumentKey> current_document_;
+};
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_LOADER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_metadata.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_metadata.h
new file mode 100644
index 0000000..0cf27f0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_metadata.h	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_METADATA_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_METADATA_H_
+
+#include <cstdint>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Represents Firestore bundle metadata saved by the SDK in its local storage.
+ */
+class BundleMetadata : public BundleElement {
+ public:
+  BundleMetadata() = default;
+
+  BundleMetadata(std::string bundle_id,
+                 int version,
+                 model::SnapshotVersion create_time)
+      : bundle_id_(std::move(bundle_id)),
+        version_(version),
+        create_time_(create_time) {
+  }
+
+  BundleMetadata(std::string bundle_id,
+                 int version,
+                 model::SnapshotVersion create_time,
+                 uint32_t total_documents,
+                 uint64_t total_bytes)
+      : bundle_id_(std::move(bundle_id)),
+        version_(version),
+        create_time_(create_time),
+        total_documents_(total_documents),
+        total_bytes_(total_bytes) {
+  }
+
+  Type element_type() const override {
+    return Type::Metadata;
+  }
+
+  /**
+   * @return The ID of the bundle. It is used together with `create_time()` to
+   * determine if a bundle has been loaded by the SDK.
+   */
+  const std::string& bundle_id() const {
+    return bundle_id_;
+  }
+
+  /**
+   * @return The schema version of the bundle.
+   */
+  uint32_t version() const {
+    return version_;
+  }
+
+  /**
+   * @return The snapshot version of the bundle when created by the server SDKs.
+   */
+  model::SnapshotVersion create_time() const {
+    return create_time_;
+  }
+
+  /** @return The number of documents in the bundle. */
+  uint32_t total_documents() const {
+    return total_documents_;
+  }
+
+  /** @return The number of bytes of the bundle. */
+  uint64_t total_bytes() const {
+    return total_bytes_;
+  }
+
+ private:
+  std::string bundle_id_;
+  uint32_t version_ = 0;
+  model::SnapshotVersion create_time_;
+
+  uint32_t total_documents_ = 0;
+  uint64_t total_bytes_ = 0;
+};
+
+inline bool operator==(const BundleMetadata& lhs, const BundleMetadata& rhs) {
+  return lhs.bundle_id() == rhs.bundle_id() && lhs.version() == rhs.version() &&
+         lhs.create_time() == rhs.create_time() &&
+         lhs.total_documents() == rhs.total_documents() &&
+         lhs.total_bytes() == rhs.total_bytes();
+}
+
+inline bool operator!=(const BundleMetadata& lhs, const BundleMetadata& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_METADATA_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.cc
new file mode 100644
index 0000000..2f087aa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.cc	
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/bundle/bundle_reader.h"
+
+#include <algorithm>
+
+#include "absl/memory/memory.h"
+#include "absl/strings/numbers.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+using nlohmann::json;
+using util::ByteStream;
+using util::StreamReadResult;
+
+namespace {
+
+json Parse(absl::string_view s) {
+  return json::parse(s.begin(), s.end(), /*callback=*/nullptr,
+                     /*allow_exceptions=*/false);
+}
+
+}  // namespace
+
+BundleReader::BundleReader(BundleSerializer serializer,
+                           std::unique_ptr<ByteStream> input)
+    : serializer_(std::move(serializer)), input_(std::move(input)) {
+}
+
+BundleMetadata BundleReader::GetBundleMetadata() {
+  if (metadata_loaded_) {
+    return metadata_;
+  }
+
+  std::unique_ptr<BundleElement> element = ReadNextElement();
+  if (!element || element->element_type() != BundleElement::Type::Metadata) {
+    Fail("Failed to get bundle metadata");
+    return {};
+  }
+
+  metadata_loaded_ = true;
+  metadata_ = static_cast<BundleMetadata&>(*element);
+  return metadata_;
+}
+
+std::unique_ptr<BundleElement> BundleReader::GetNextElement() {
+  // Makes sure metadata is read before proceeding. The metadata element is the
+  // first element in the bundle stream.
+  GetBundleMetadata();
+  return ReadNextElement();
+}
+
+std::unique_ptr<BundleElement> BundleReader::ReadNextElement() {
+  auto length_prefix = ReadLengthPrefix();
+  if (!length_prefix.has_value()) {
+    return nullptr;
+  }
+
+  size_t prefix_value = 0;
+  auto ok = absl::SimpleAtoi<size_t>(length_prefix.value(), &prefix_value);
+  if (!ok) {
+    Fail("Prefix string is not a valid number");
+    return nullptr;
+  }
+
+  buffer_.clear();
+  ReadJsonToBuffer(prefix_value);
+  if (!reader_status_.ok()) {
+    return nullptr;
+  }
+
+  // metadata's size does not count in `bytes_read_`.
+  if (metadata_loaded_) {
+    bytes_read_ += length_prefix.value().size() + buffer_.size();
+  }
+  auto result = DecodeBundleElementFromBuffer();
+  reader_status_.Update(json_reader_.status());
+
+  return result;
+}
+
+absl::optional<std::string> BundleReader::ReadLengthPrefix() {
+  // length string of size 16 indicates an element about 1PB, which is
+  // impossible for valid bundles.
+  StreamReadResult result = input_->ReadUntil('{', 16);
+  if (!result.ok()) {
+    reader_status_.Update(result.status());
+    return absl::nullopt;
+  }
+
+  // Underlying stream is closed, and there happens to be no more data to
+  // process.
+  if (result.eof() && result.ValueOrDie().empty()) {
+    return absl::nullopt;
+  }
+
+  return absl::make_optional(std::move(result).ValueOrDie());
+}
+
+void BundleReader::ReadJsonToBuffer(size_t required_size) {
+  if (!reader_status_.ok()) {
+    return;
+  }
+  while (buffer_.size() < required_size) {
+    // Read at most 1024 bytes every time, to avoid allocating a huge buffer
+    // when corruption leads to large `required_size`.
+    auto size = std::min<size_t>(1024ul, required_size - buffer_.size());
+    StreamReadResult result = input_->Read(size);
+    if (!result.ok()) {
+      reader_status_.Update(result.status());
+      return;
+    }
+    bool eof = result.eof();
+    buffer_.append(std::move(result).ValueOrDie());
+    if (eof) {
+      break;
+    }
+  }
+
+  if (buffer_.size() < required_size) {
+    Fail("Available input string is smaller than what length prefix indicates");
+  }
+}
+
+std::unique_ptr<BundleElement> BundleReader::DecodeBundleElementFromBuffer() {
+  auto json_object = Parse(buffer_);
+  if (json_object.is_discarded()) {
+    Fail("Failed to parse string into json");
+    return nullptr;
+  }
+
+  if (json_object.contains("metadata")) {
+    return absl::make_unique<BundleMetadata>(serializer_.DecodeBundleMetadata(
+        json_reader_, json_object.at("metadata")));
+  } else if (json_object.contains("namedQuery")) {
+    auto q = serializer_.DecodeNamedQuery(json_reader_,
+                                          json_object.at("namedQuery"));
+    return absl::make_unique<NamedQuery>(std::move(q));
+  } else if (json_object.contains("documentMetadata")) {
+    return absl::make_unique<BundledDocumentMetadata>(
+        serializer_.DecodeDocumentMetadata(json_reader_,
+                                           json_object.at("documentMetadata")));
+  } else if (json_object.contains("document")) {
+    return absl::make_unique<BundleDocument>(
+        serializer_.DecodeDocument(json_reader_, json_object.at("document")));
+  } else {
+    Fail("Unrecognized BundleElement");
+    return nullptr;
+  }
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.h
new file mode 100644
index 0000000..81a9d7d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_reader.h	
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_READER_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_READER_H_
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/bundle_serializer.h"
+#include "Firestore/core/src/util/byte_stream.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Reads the length-prefixed JSON stream for Bundles.
+ *
+ * The class takes a bundle stream and presents abstractions to read bundled
+ * elements out of the underlying content.
+ */
+class BundleReader {
+ public:
+  BundleReader(BundleSerializer serializer,
+               std::unique_ptr<util::ByteStream> input);
+
+  /**
+   * Returns the metadata element from the bundle.
+   *
+   * Caches the result when first called, and returns the cached result in the
+   * following calls.
+   */
+  BundleMetadata GetBundleMetadata();
+
+  /**
+   * Returns the next element from the bundle. Metadata elements can be accessed
+   * by `GetBundleMetadata`, they are not returned from this method.
+   *
+   * When there is no more element to return, a `nullptr` is returned. Check
+   * `reader_status()` to see if it is due to the completion of bundle (status
+   * will be `ok()`), or an error.
+   */
+  std::unique_ptr<BundleElement> GetNextElement();
+
+  /** Returns whether this instance is in good state. */
+  const util::Status& reader_status() const {
+    return reader_status_;
+  }
+
+  /** Sets this instance to a failed state. */
+  void Fail(std::string msg) {
+    reader_status_.Update(util::Status(Error::kErrorDataLoss, std::move(msg)));
+  }
+
+  /** How many bytes have we read from the bundle. */
+  int64_t bytes_read() const {
+    return bytes_read_;
+  }
+
+ private:
+  /**
+   * Reads from the head of internal buffer, pulls more data from underlying
+   * stream until a complete element is found (including the prefixed length and
+   * the JSON string).
+   *
+   * Once a complete element is read, it is dropped from internal buffer.
+   *
+   * Returns either the bundled element, or null if we have reached the end of
+   * the stream.
+   */
+  std::unique_ptr<BundleElement> ReadNextElement();
+
+  /**
+   * Reads the length prefix string from bundle stream. Returns `nullopt` when
+   * at the end of stream.
+   *
+   * The string representing a length prefix is whatever string we have from
+   * the `input_` until the next character is a "{" (start of JSON element).
+   * So calling this a second time will return an empty string.
+   */
+  absl::optional<std::string> ReadLengthPrefix();
+
+  /**
+   * Reads `required_size` number of chars from stream into internal `buffer_`.
+   */
+  void ReadJsonToBuffer(size_t required_size);
+
+  /**
+   * Decodes internal `buffer_` into a `BundleElement`, returned as a unique_ptr
+   * pointing to the element. Returns nullptr if fails.
+   *
+   * Note this method will leave `buffer_` unchanged.
+   */
+  std::unique_ptr<BundleElement> DecodeBundleElementFromBuffer();
+
+  BundleSerializer serializer_;
+  JsonReader json_reader_;
+
+  // Input stream holding bundle data.
+  std::unique_ptr<util::ByteStream> input_;
+
+  // Cached bundle metadata.
+  BundleMetadata metadata_;
+  bool metadata_loaded_ = false;
+
+  // Internal buffer, cleared every time a complete element is parsed from this.
+  std::string buffer_;
+
+  util::Status reader_status_;
+  int64_t bytes_read_ = 0;
+};
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_READER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.cc
new file mode 100644
index 0000000..6a64f21
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.cc	
@@ -0,0 +1,812 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless Requiredd by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/bundle/bundle_serializer.h"
+
+#include <memory>
+#include <vector>
+
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/direction.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/order_by.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/timestamp_internal.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "Firestore/core/src/util/string_util.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/numbers.h"
+#include "absl/time/time.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+namespace {
+
+using absl::Time;
+using core::Bound;
+using core::Direction;
+using core::FieldFilter;
+using core::Filter;
+using core::FilterList;
+using core::LimitType;
+using core::OrderBy;
+using core::OrderByList;
+using core::Target;
+using model::Document;
+using model::DocumentKey;
+using model::FieldPath;
+using model::MutableDocument;
+using model::NaNValue;
+using model::NullValue;
+using model::ObjectValue;
+using model::ResourcePath;
+using model::SnapshotVersion;
+using nanopb::ByteString;
+using nanopb::MakeSharedMessage;
+using nanopb::Message;
+using nanopb::SetRepeatedField;
+using nanopb::SharedMessage;
+using nlohmann::json;
+using util::StatusOr;
+using util::StringFormat;
+
+template <typename T>
+const std::vector<T>& EmptyVector() {
+  static auto* empty = new std::vector<T>;
+  return *empty;
+}
+
+Timestamp DecodeTimestamp(JsonReader& reader, const json& version) {
+  StatusOr<Timestamp> decoded;
+  if (version.is_string()) {
+    Time time;
+    std::string err;
+    bool ok = absl::ParseTime(
+        absl::RFC3339_full, version.get_ref<const std::string&>(), &time, &err);
+    if (ok) {
+      decoded = TimestampInternal::FromUntrustedTime(time);
+    } else {
+      reader.Fail("Parsing timestamp failed with error: " + err);
+      return {};
+    }
+  } else {
+    decoded = TimestampInternal::FromUntrustedSecondsAndNanos(
+        reader.RequiredInt<int64_t>("seconds", version),
+        reader.RequiredInt<int32_t>("nanos", version));
+  }
+
+  if (!decoded.ok()) {
+    reader.Fail(
+        "Failed to decode json into valid protobuf Timestamp with error '%s'",
+        decoded.status().error_message());
+    return {};
+  }
+  return decoded.ConsumeValueOrDie();
+}
+
+SnapshotVersion DecodeSnapshotVersion(JsonReader& reader, const json& version) {
+  return SnapshotVersion(DecodeTimestamp(reader, version));
+}
+
+void VerifyStructuredQuery(JsonReader& reader, const json& query) {
+  if (!query.is_object()) {
+    reader.Fail("'structuredQuery' is not an object as expected.");
+    return;
+  }
+  if (query.contains("select")) {
+    reader.Fail(
+        "Queries with 'select' statements are not supported in bundles");
+    return;
+  }
+  if (!query.contains("from")) {
+    reader.Fail("Query does not have a 'from' collection");
+    return;
+  }
+  if (query.contains("offset")) {
+    reader.Fail("Queries with 'offset' are not supported in bundles");
+    return;
+  }
+}
+
+/**
+ * Decodes a json object into the given `parent` and `group` reference.
+ *
+ * Specifically, if the given `from_json` is for a collection group query, its
+ * collection id will be decoded into `group`; otherwise, the collection id will
+ * be appended to `parent`.
+ */
+void DecodeCollectionSource(JsonReader& reader,
+                            const json& from_json,
+                            ResourcePath& parent,
+                            std::string& group) {
+  const auto& from = from_json.get_ref<const std::vector<json>&>();
+  if (from.size() != 1) {
+    reader.Fail(
+        "Only queries with a single 'from' clause are supported by the SDK");
+    return;
+  }
+  const auto& collection_selector = from.at(0);
+  const auto& collection_id =
+      reader.RequiredString("collectionId", collection_selector);
+  bool all_descendants =
+      reader.OptionalBool("allDescendants", collection_selector);
+
+  if (all_descendants) {
+    group = collection_id;
+  } else {
+    parent = parent.Append(collection_id);
+  }
+}
+
+FieldPath DecodeFieldReference(JsonReader& reader, const json& field) {
+  if (!field.is_object()) {
+    reader.Fail("'field' should be an json object, but it is not");
+    return {};
+  }
+
+  const auto& field_path = reader.RequiredString("fieldPath", field);
+  auto result = FieldPath::FromServerFormat(field_path);
+
+  if (!result.ok()) {
+    reader.set_status(result.status());
+    return {};
+  } else {
+    return result.ConsumeValueOrDie();
+  }
+}
+
+Filter::Operator DecodeFieldFilterOperator(JsonReader& reader,
+                                           const std::string& op) {
+  if (op == "LESS_THAN") {
+    return Filter::Operator::LessThan;
+  } else if (op == "LESS_THAN_OR_EQUAL") {
+    return Filter::Operator::LessThanOrEqual;
+  } else if (op == "EQUAL") {
+    return Filter::Operator::Equal;
+  } else if (op == "NOT_EQUAL") {
+    return Filter::Operator::NotEqual;
+  } else if (op == "GREATER_THAN") {
+    return Filter::Operator::GreaterThan;
+  } else if (op == "GREATER_THAN_OR_EQUAL") {
+    return Filter::Operator::GreaterThanOrEqual;
+  } else if (op == "ARRAY_CONTAINS") {
+    return Filter::Operator::ArrayContains;
+  } else if (op == "IN") {
+    return Filter::Operator::In;
+  } else if (op == "ARRAY_CONTAINS_ANY") {
+    return Filter::Operator::ArrayContainsAny;
+  } else if (op == "NOT_IN") {
+    return Filter::Operator::NotIn;
+  } else {
+    reader.Fail("Operator in filter is not valid: " + op);
+    // We have to return something.
+    return Filter::Operator::Equal;
+  }
+}
+
+Filter InvalidFilter() {
+  // The exact value doesn't matter. Note that there's no way to create the base
+  // class `Filter`, so it has to be one of the derived classes.
+  return FieldFilter::Create({}, {},
+                             MakeSharedMessage(google_firestore_v1_Value{}));
+}
+
+Filter DecodeUnaryFilter(JsonReader& reader, const json& filter) {
+  FieldPath path =
+      DecodeFieldReference(reader, reader.RequiredObject("field", filter));
+  std::string op = reader.RequiredString("op", filter);
+
+  // Return early if !ok(), because `FieldFilter::Create` will abort with
+  // invalid inputs.
+  if (!reader.ok()) {
+    return InvalidFilter();
+  }
+
+  if (op == "IS_NAN") {
+    return FieldFilter::Create(path, Filter::Operator::Equal, NaNValue());
+  } else if (op == "IS_NULL") {
+    return FieldFilter::Create(path, Filter::Operator::Equal, NullValue());
+  } else if (op == "IS_NOT_NAN") {
+    return FieldFilter::Create(path, Filter::Operator::NotEqual, NaNValue());
+  } else if (op == "IS_NOT_NULL") {
+    return FieldFilter::Create(path, Filter::Operator::NotEqual, NullValue());
+  }
+
+  reader.Fail("Unexpected unary filter operator: " + op);
+  return InvalidFilter();
+}
+
+OrderByList DecodeOrderBy(JsonReader& reader, const json& query) {
+  OrderByList result;
+  std::vector<json> default_order_by;
+  for (const auto& order_by :
+       reader.OptionalArray("orderBy", query, default_order_by)) {
+    FieldPath path =
+        DecodeFieldReference(reader, reader.RequiredObject("field", order_by));
+
+    std::string direction_string =
+        reader.OptionalString("direction", order_by, "ASCENDING");
+    if (direction_string != "DESCENDING" && direction_string != "ASCENDING") {
+      reader.Fail("'direction' value is invalid: " + direction_string);
+      return {};
+    }
+
+    Direction direction = direction_string == "ASCENDING"
+                              ? Direction::Ascending
+                              : Direction::Descending;
+
+    result = result.push_back(OrderBy(std::move(path), direction));
+  }
+
+  return result;
+}
+
+int32_t DecodeLimit(JsonReader& reader, const json& query) {
+  int32_t limit = Target::kNoLimit;
+  if (query.contains("limit")) {
+    const auto& limit_object = query.at("limit");
+    // "limit" can be encoded as integer or "{"value": integer}".
+    if (limit_object.is_number_integer()) {
+      return limit_object.get<int32_t>();
+    } else if (limit_object.is_object()) {
+      if (limit_object.at("value").is_number_integer()) {
+        return limit_object.at("value").get<int32_t>();
+      }
+    }
+    reader.Fail("'limit' is not encoded as a valid integer");
+    return limit;
+  }
+
+  return limit;
+}
+
+LimitType DecodeLimitType(JsonReader& reader, const json& query) {
+  std::string limit_type = reader.OptionalString("limitType", query, "FIRST");
+
+  if (limit_type == "FIRST") {
+    return LimitType::First;
+  } else if (limit_type == "LAST") {
+    return LimitType::Last;
+  } else {
+    reader.Fail("'limitType' is not encoded as a recognizable value");
+    return LimitType::None;
+  }
+}
+
+google_type_LatLng DecodeGeoPointValue(JsonReader& reader,
+                                       const json& geo_json) {
+  google_type_LatLng result{};
+  result.latitude = reader.OptionalDouble("latitude", geo_json, 0.0);
+  result.longitude = reader.OptionalDouble("longitude", geo_json, 0.0);
+  return result;
+}
+
+pb_bytes_array_t* DecodeBytesValue(JsonReader& reader,
+                                   const std::string& bytes_string) {
+  std::string decoded;
+  if (!absl::Base64Unescape(bytes_string, &decoded)) {
+    reader.Fail("Failed to decode bytesValue string into binary form");
+    return {};
+  }
+  return nanopb::MakeBytesArray(decoded);
+}
+
+}  // namespace
+
+// Mark: JsonReader
+
+const std::string& JsonReader::RequiredString(const char* name,
+                                              const json& json_object) {
+  if (json_object.contains(name)) {
+    const json& child = json_object.at(name);
+    if (child.is_string()) {
+      return child.get_ref<const std::string&>();
+    }
+  }
+
+  Fail("'%s' is missing or is not a string", name);
+  return util::EmptyString();
+}
+
+const std::string& JsonReader::OptionalString(
+    const char* name,
+    const json& json_object,
+    const std::string& default_value) {
+  if (json_object.contains(name)) {
+    const json& child = json_object.at(name);
+    if (child.is_string()) {
+      return child.get_ref<const std::string&>();
+    }
+  }
+
+  return default_value;
+}
+
+const std::vector<json>& JsonReader::RequiredArray(const char* name,
+                                                   const json& json_object) {
+  if (json_object.contains(name)) {
+    const json& child = json_object.at(name);
+    if (child.is_array()) {
+      return child.get_ref<const std::vector<json>&>();
+    }
+  }
+
+  Fail("'%s' is missing or is not an array", name);
+  return EmptyVector<json>();
+}
+
+const std::vector<json>& JsonReader::OptionalArray(
+    const char* name,
+    const json& json_object,
+    const std::vector<json>& default_value) {
+  if (!json_object.contains(name)) {
+    return default_value;
+  }
+
+  const json& child = json_object.at(name);
+  if (child.is_array()) {
+    return child.get_ref<const std::vector<json>&>();
+  } else {
+    Fail("'%s' is not an array", name);
+    return EmptyVector<json>();
+  }
+}
+
+bool JsonReader::OptionalBool(const char* name,
+                              const json& json_object,
+                              bool default_value) {
+  return (json_object.contains(name) && json_object.at(name).is_boolean() &&
+          json_object.at(name).get<bool>()) ||
+         default_value;
+}
+
+const nlohmann::json& JsonReader::RequiredObject(const char* child_name,
+                                                 const json& json_object) {
+  if (!json_object.contains(child_name)) {
+    Fail("Missing child '%s'", child_name);
+    return json_object;
+  }
+  return json_object.at(child_name);
+}
+
+double JsonReader::RequiredDouble(const char* name, const json& json_object) {
+  if (json_object.contains(name)) {
+    double result = DecodeDouble(json_object.at(name));
+    if (ok()) {
+      return result;
+    }
+  }
+
+  Fail("'%s' is missing or is not a double", name);
+  return 0.0;
+}
+
+double JsonReader::OptionalDouble(const char* name,
+                                  const json& json_object,
+                                  double default_value) {
+  if (json_object.contains(name)) {
+    double result = DecodeDouble(json_object.at(name));
+    if (ok()) {
+      return result;
+    }
+  }
+
+  return default_value;
+}
+
+double JsonReader::DecodeDouble(const nlohmann::json& value) {
+  if (value.is_number()) {
+    return value.get<double>();
+  }
+
+  double result = 0;
+  if (value.is_string()) {
+    const auto& s = value.get_ref<const std::string&>();
+    auto ok = absl::SimpleAtod(s, &result);
+    if (!ok) {
+      Fail("Failed to parse into double: " + s);
+    }
+  }
+  return result;
+}
+
+template <typename IntType>
+IntType ParseInt(const json& value, JsonReader& reader) {
+  if (value.is_number_integer()) {
+    return value.get<IntType>();
+  }
+
+  IntType result = 0;
+  if (value.is_string()) {
+    const auto& s = value.get_ref<const std::string&>();
+    auto ok = absl::SimpleAtoi<IntType>(s, &result);
+    if (!ok) {
+      reader.Fail("Failed to parse into integer: " + s);
+      return 0;
+    }
+
+    return result;
+  }
+
+  reader.Fail("Only integer and string can be parsed into int type");
+  return 0;
+}
+
+template <typename IntType>
+IntType JsonReader::RequiredInt(const char* name, const json& json_object) {
+  if (!json_object.contains(name)) {
+    Fail("'%s' is missing or is not a double", name);
+    return 0;
+  }
+
+  const json& value = json_object.at(name);
+  return ParseInt<IntType>(value, *this);
+}
+
+template <typename IntType>
+IntType JsonReader::OptionalInt(const char* name,
+                                const json& json_object,
+                                IntType default_value) {
+  if (!json_object.contains(name)) {
+    return default_value;
+  }
+
+  const json& value = json_object.at(name);
+  return ParseInt<IntType>(value, *this);
+}
+
+// Mark: BundleSerializer
+
+BundleMetadata BundleSerializer::DecodeBundleMetadata(
+    JsonReader& reader, const json& metadata) const {
+  return BundleMetadata(
+      reader.RequiredString("id", metadata),
+      reader.RequiredInt<uint32_t>("version", metadata),
+      DecodeSnapshotVersion(reader,
+                            reader.RequiredObject("createTime", metadata)),
+      reader.OptionalInt<uint32_t>("totalDocuments", metadata, 0),
+      reader.OptionalInt<uint64_t>("totalBytes", metadata, 0));
+}
+
+NamedQuery BundleSerializer::DecodeNamedQuery(JsonReader& reader,
+                                              const json& named_query) const {
+  return NamedQuery(
+      reader.RequiredString("name", named_query),
+      DecodeBundledQuery(reader,
+                         reader.RequiredObject("bundledQuery", named_query)),
+      DecodeSnapshotVersion(reader,
+                            reader.RequiredObject("readTime", named_query)));
+}
+
+BundledQuery BundleSerializer::DecodeBundledQuery(
+    JsonReader& reader, const nlohmann::json& query) const {
+  const json& structured_query =
+      reader.RequiredObject("structuredQuery", query);
+  VerifyStructuredQuery(reader, structured_query);
+  if (!reader.ok()) {
+    return {};
+  }
+
+  ResourcePath parent =
+      DecodeName(reader, reader.RequiredObject("parent", query));
+  std::string collection_group_string;
+  DecodeCollectionSource(reader, structured_query.at("from"), parent,
+                         collection_group_string);
+  std::shared_ptr<std::string> collection_group;
+  if (!collection_group_string.empty()) {
+    collection_group = std::make_shared<std::string>(collection_group_string);
+  }
+
+  auto filters = DecodeWhere(reader, structured_query);
+  auto order_bys = DecodeOrderBy(reader, structured_query);
+
+  auto start_at_bound = DecodeBound(reader, structured_query, "startAt");
+  absl::optional<Bound> start_at;
+  if (start_at_bound.position()->values_count > 0) {
+    start_at = std::move(start_at_bound);
+  }
+
+  auto end_at_bound = DecodeBound(reader, structured_query, "endAt");
+  absl::optional<Bound> end_at;
+  if (end_at_bound.position()->values_count > 0) {
+    end_at = std::move(end_at_bound);
+  }
+
+  int32_t limit = DecodeLimit(reader, structured_query);
+  LimitType limit_type = DecodeLimitType(reader, query);
+
+  return BundledQuery(Target(std::move(parent), std::move(collection_group),
+                             std::move(filters), std::move(order_bys), limit,
+                             std::move(start_at), std::move(end_at)),
+                      limit_type);
+}
+
+ResourcePath BundleSerializer::DecodeName(JsonReader& reader,
+                                          const json& document_name) const {
+  if (!document_name.is_string()) {
+    reader.Fail("Document name is not a string.");
+    return {};
+  }
+  auto path =
+      ResourcePath::FromString(document_name.get_ref<const std::string&>());
+  if (!rpc_serializer_.IsLocalResourceName(path)) {
+    reader.Fail("Resource name is not valid for current instance: " +
+                path.CanonicalString());
+    return {};
+  }
+  return path.PopFirst(5);
+}
+
+FilterList BundleSerializer::DecodeWhere(JsonReader& reader,
+                                         const json& query) const {
+  // Absent 'where' is a valid case.
+  if (!query.contains("where")) {
+    return {};
+  }
+
+  const auto& where = query.at("where");
+  if (!where.is_object()) {
+    reader.Fail("Query's 'where' clause is not a json object.");
+    return {};
+  }
+
+  FilterList result;
+  if (where.contains("compositeFilter")) {
+    return DecodeCompositeFilter(reader, where.at("compositeFilter"));
+  } else if (where.contains("fieldFilter")) {
+    return result.push_back(DecodeFieldFilter(reader, where.at("fieldFilter")));
+  } else if (where.contains("unaryFilter")) {
+    return result.push_back(DecodeUnaryFilter(reader, where.at("unaryFilter")));
+  } else {
+    reader.Fail("'where' does not have valid filter");
+    return {};
+  }
+}
+
+Filter BundleSerializer::DecodeFieldFilter(JsonReader& reader,
+                                           const json& filter) const {
+  FieldPath path =
+      DecodeFieldReference(reader, reader.RequiredObject("field", filter));
+
+  const auto& op_string = reader.RequiredString("op", filter);
+  auto op = DecodeFieldFilterOperator(reader, op_string);
+
+  Message<google_firestore_v1_Value> value =
+      DecodeValue(reader, reader.RequiredObject("value", filter));
+
+  // Return early if !ok(), because `FieldFilter::Create` will abort with
+  // invalid inputs.
+  if (!reader.ok()) {
+    return InvalidFilter();
+  }
+
+  return FieldFilter::Create(path, op, std::move(value));
+}
+
+FilterList BundleSerializer::DecodeCompositeFilter(JsonReader& reader,
+                                                   const json& filter) const {
+  if (reader.RequiredString("op", filter) != "AND") {
+    reader.Fail("The SDK only supports composite filters of type 'AND'");
+    return {};
+  }
+
+  auto filters = reader.RequiredArray("filters", filter);
+  FilterList result;
+  for (const auto& f : filters) {
+    result = result.push_back(
+        DecodeFieldFilter(reader, reader.RequiredObject("fieldFilter", f)));
+    if (!reader.ok()) {
+      return {};
+    }
+  }
+
+  return result;
+}
+
+Bound BundleSerializer::DecodeBound(JsonReader& reader,
+                                    const json& query,
+                                    const char* bound_name) const {
+  Bound default_bound = Bound::FromValue(
+      MakeSharedMessage<google_firestore_v1_ArrayValue>({}), false);
+  if (!query.contains(bound_name)) {
+    return default_bound;
+  }
+
+  const json& bound_json = reader.RequiredObject(bound_name, query);
+  std::vector<json> values = reader.RequiredArray("values", bound_json);
+  bool before = reader.OptionalBool("before", bound_json);
+
+  auto positions = MakeSharedMessage<google_firestore_v1_ArrayValue>({});
+  SetRepeatedField(
+      &positions->values, &positions->values_count, values,
+      [&](const json& j) { return *DecodeValue(reader, j).release(); });
+  return Bound::FromValue(std::move(positions), before);
+}
+
+Message<google_firestore_v1_Value> BundleSerializer::DecodeValue(
+    JsonReader& reader, const json& value) const {
+  if (!value.is_object()) {
+    reader.Fail("'value' is not encoded as JSON object");
+    return {};
+  }
+
+  Message<google_firestore_v1_Value> result;
+  if (value.contains("nullValue")) {
+    result->which_value_type = google_firestore_v1_Value_null_value_tag;
+    result->null_value = {};
+  } else if (value.contains("booleanValue")) {
+    result->which_value_type = google_firestore_v1_Value_boolean_value_tag;
+    auto val = value.at("booleanValue");
+    if (!val.is_boolean()) {
+      reader.Fail("'booleanValue' is not encoded as a valid boolean");
+      return {};
+    }
+    result->boolean_value = val.get<bool>();
+  } else if (value.contains("integerValue")) {
+    result->which_value_type = google_firestore_v1_Value_integer_value_tag;
+    result->integer_value = reader.RequiredInt<int64_t>("integerValue", value);
+  } else if (value.contains("doubleValue")) {
+    result->which_value_type = google_firestore_v1_Value_double_value_tag;
+    result->double_value = reader.RequiredDouble("doubleValue", value);
+  } else if (value.contains("timestampValue")) {
+    auto val = DecodeTimestamp(reader, value.at("timestampValue"));
+    result->which_value_type = google_firestore_v1_Value_timestamp_value_tag;
+    result->timestamp_value.seconds = val.seconds();
+    result->timestamp_value.nanos = val.nanoseconds();
+  } else if (value.contains("stringValue")) {
+    result->which_value_type = google_firestore_v1_Value_string_value_tag;
+    result->string_value =
+        nanopb::MakeBytesArray(reader.RequiredString("stringValue", value));
+  } else if (value.contains("bytesValue")) {
+    result->which_value_type = google_firestore_v1_Value_bytes_value_tag;
+    result->bytes_value =
+        DecodeBytesValue(reader, reader.RequiredString("bytesValue", value));
+  } else if (value.contains("referenceValue")) {
+    result->which_value_type = google_firestore_v1_Value_reference_value_tag;
+    result->reference_value = DecodeReferenceValue(
+        reader, reader.RequiredString("referenceValue", value));
+  } else if (value.contains("geoPointValue")) {
+    result->which_value_type = google_firestore_v1_Value_geo_point_value_tag;
+    result->geo_point_value =
+        DecodeGeoPointValue(reader, value.at("geoPointValue"));
+  } else if (value.contains("arrayValue")) {
+    result->which_value_type = google_firestore_v1_Value_array_value_tag;
+    result->array_value =
+        *DecodeArrayValue(reader, value.at("arrayValue")).release();
+  } else if (value.contains("mapValue")) {
+    result->which_value_type = google_firestore_v1_Value_map_value_tag;
+    result->map_value = *DecodeMapValue(reader, value.at("mapValue")).release();
+  } else {
+    reader.Fail("Failed to decode value, no type is recognized");
+    return {};
+  }
+  return result;
+}
+
+Message<google_firestore_v1_MapValue> BundleSerializer::DecodeMapValue(
+    JsonReader& reader, const json& map_json) const {
+  if (!map_json.is_object() || !map_json.contains("fields")) {
+    reader.Fail("mapValue is not a valid map");
+    return {};
+  }
+  const auto& fields = map_json.at("fields");
+  if (!fields.is_object()) {
+    reader.Fail("mapValue's 'field' is not a valid map");
+    return {};
+  }
+
+  // Fill the map array. Note that we can't use SetRepeatedField here since the
+  // JSON map doesn't currently work with SetRepeatedField.
+  Message<google_firestore_v1_MapValue> map_value;
+  map_value->fields_count = nanopb::CheckedSize(fields.size());
+  map_value->fields =
+      nanopb::MakeArray<google_firestore_v1_MapValue_FieldsEntry>(
+          map_value->fields_count);
+  pb_size_t i = 0;
+  for (const auto& entry : fields.items()) {
+    map_value->fields[i] = {nanopb::MakeBytesArray(entry.key()),
+                            *DecodeValue(reader, entry.value()).release()};
+    ++i;
+  }
+  return map_value;
+}
+
+Message<google_firestore_v1_ArrayValue> BundleSerializer::DecodeArrayValue(
+    JsonReader& reader, const json& array_json) const {
+  const auto& values = reader.RequiredArray("values", array_json);
+
+  Message<google_firestore_v1_ArrayValue> array_value;
+  SetRepeatedField(
+      &array_value->values, &array_value->values_count, values,
+      [&](const json& j) { return *DecodeValue(reader, j).release(); });
+  return array_value;
+}
+
+pb_bytes_array_t* BundleSerializer::DecodeReferenceValue(
+    JsonReader& reader, const std::string& ref_string) const {
+  if (reader.ok() && !rpc_serializer_.IsLocalDocumentKey(ref_string)) {
+    reader.Fail(
+        StringFormat("Tried to deserialize an invalid key: %s", ref_string));
+  }
+
+  return nanopb::MakeBytesArray(ref_string);
+}
+
+BundledDocumentMetadata BundleSerializer::DecodeDocumentMetadata(
+    JsonReader& reader, const json& document_metadata) const {
+  ResourcePath path =
+      DecodeName(reader, reader.RequiredObject("name", document_metadata));
+  // Return early if !ok(), `DocumentKey` aborts with invalid inputs.
+  if (!reader.ok()) {
+    return {};
+  }
+  DocumentKey key = DocumentKey(path);
+
+  SnapshotVersion read_time = DecodeSnapshotVersion(
+      reader, reader.RequiredObject("readTime", document_metadata));
+
+  bool exists = reader.OptionalBool("exists", document_metadata);
+
+  std::vector<std::string> queries;
+  std::vector<json> default_queries;
+  for (const json& query :
+       reader.OptionalArray("queries", document_metadata, default_queries)) {
+    if (!query.is_string()) {
+      reader.Fail("Query name should be encoded as string");
+      return {};
+    }
+
+    queries.push_back(query.get<std::string>());
+  }
+
+  return BundledDocumentMetadata(std::move(key), read_time, exists,
+                                 std::move(queries));
+}
+
+BundleDocument BundleSerializer::DecodeDocument(JsonReader& reader,
+                                                const json& document) const {
+  ResourcePath path =
+      DecodeName(reader, reader.RequiredObject("name", document));
+  // Return early if !ok(), `DocumentKey` aborts with invalid inputs.
+  if (!reader.ok()) {
+    return {};
+  }
+  DocumentKey key = DocumentKey(path);
+
+  SnapshotVersion update_time = DecodeSnapshotVersion(
+      reader, reader.RequiredObject("updateTime", document));
+
+  auto map_value = DecodeMapValue(reader, document);
+
+  return BundleDocument(MutableDocument::FoundDocument(
+      std::move(key), update_time,
+      ObjectValue::FromMapValue(std::move(map_value))));
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.h
new file mode 100644
index 0000000..d4ae533
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundle_serializer.h	
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_SERIALIZER_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_SERIALIZER_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/bundle/bundle_document.h"
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/bundled_document_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/read_context.h"
+#include "Firestore/third_party/nlohmann_json/json.hpp"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Provides the ability to report failure cases by inheriting `ReadContext`, and
+ * checks and reads json object into specified types.
+ *
+ * `Required*` methods check the existence of the given name and compatibility
+ * of its value (can it be read into the given type?). They fail the reader if
+ * any of the checks fail, otherwise return the read value.
+ *
+ * `Optional*` methods check the existence of the given name, and return a
+ * specified default value if the name does not exist. They then check
+ * compatibility of its value, fail the reader if that check fails, or return
+ * the read value if it succeeds.
+ */
+class JsonReader : public util::ReadContext {
+ public:
+  const std::string& RequiredString(const char* name,
+                                    const nlohmann::json& json_object);
+  const std::string& OptionalString(const char* name,
+                                    const nlohmann::json& json_object,
+                                    const std::string& default_value);
+
+  const std::vector<nlohmann::json>& RequiredArray(
+      const char* name, const nlohmann::json& json_object);
+  const std::vector<nlohmann::json>& OptionalArray(
+      const char* name,
+      const nlohmann::json& json_object,
+      const std::vector<nlohmann::json>& default_value);
+  const nlohmann::json& RequiredObject(const char* child_name,
+                                       const nlohmann::json& json_object);
+
+  double RequiredDouble(const char* name, const nlohmann::json& json_object);
+  double OptionalDouble(const char* name,
+                        const nlohmann::json& json_object,
+                        double default_value = 0);
+
+  template <typename IntType>
+  IntType RequiredInt(const char* name, const nlohmann::json& json_object);
+
+  template <typename IntType>
+  IntType OptionalInt(const char* name,
+                      const nlohmann::json& json_object,
+                      IntType default_value);
+
+  static bool OptionalBool(const char* name,
+                           const nlohmann::json& json_object,
+                           bool default_value = false);
+
+ private:
+  double DecodeDouble(const nlohmann::json& value);
+};
+
+/** A JSON serializer to deserialize Firestore Bundles. */
+class BundleSerializer {
+ public:
+  explicit BundleSerializer(remote::Serializer serializer)
+      : rpc_serializer_(std::move(serializer)) {
+  }
+  BundleMetadata DecodeBundleMetadata(JsonReader& reader,
+                                      const nlohmann::json& metadata) const;
+
+  NamedQuery DecodeNamedQuery(JsonReader& reader,
+                              const nlohmann::json& named_query) const;
+
+  BundledDocumentMetadata DecodeDocumentMetadata(
+      JsonReader& reader, const nlohmann::json& document_metadata) const;
+
+  BundleDocument DecodeDocument(JsonReader& reader,
+                                const nlohmann::json& document) const;
+
+ private:
+  BundledQuery DecodeBundledQuery(JsonReader& reader,
+                                  const nlohmann::json& query) const;
+  core::FilterList DecodeWhere(JsonReader& reader,
+                               const nlohmann::json& query) const;
+  core::Filter DecodeFieldFilter(JsonReader& reader,
+                                 const nlohmann::json& filter) const;
+  core::FilterList DecodeCompositeFilter(JsonReader& reader,
+                                         const nlohmann::json& filter) const;
+  nanopb::Message<google_firestore_v1_Value> DecodeValue(
+      JsonReader& reader, const nlohmann::json& value) const;
+  core::Bound DecodeBound(JsonReader& reader,
+                          const nlohmann::json& query,
+                          const char* bound_name) const;
+  model::ResourcePath DecodeName(JsonReader& reader,
+                                 const nlohmann::json& name) const;
+  nanopb::Message<google_firestore_v1_ArrayValue> DecodeArrayValue(
+      JsonReader& reader, const nlohmann::json& array_json) const;
+  nanopb::Message<google_firestore_v1_MapValue> DecodeMapValue(
+      JsonReader& reader, const nlohmann::json& map_json) const;
+  pb_bytes_array_t* DecodeReferenceValue(JsonReader& reader,
+                                         const std::string& ref_string) const;
+
+  remote::Serializer rpc_serializer_;
+};
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLE_SERIALIZER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_document_metadata.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_document_metadata.h
new file mode 100644
index 0000000..a50c976
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_document_metadata.h	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_DOCUMENT_METADATA_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_DOCUMENT_METADATA_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/** Metadata describing a Firestore document saved in the bundle. */
+class BundledDocumentMetadata : public BundleElement {
+ public:
+  BundledDocumentMetadata() = default;
+
+  BundledDocumentMetadata(model::DocumentKey key,
+                          model::SnapshotVersion read_time,
+                          bool exists,
+                          std::vector<std::string> queries)
+      : key_(std::move(key)),
+        read_time_(read_time),
+        exists_(exists),
+        queries_(std::move(queries)) {
+  }
+
+  Type element_type() const override {
+    return Type::DocumentMetadata;
+  }
+
+  /** Returns the document key of a bundled document. */
+  const model::DocumentKey& key() const {
+    return key_;
+  }
+
+  /** Returns the snapshot version of the document data bundled. */
+  const model::SnapshotVersion& read_time() const {
+    return read_time_;
+  }
+
+  /** Returns whether the document exists. */
+  bool exists() const {
+    return exists_;
+  }
+
+  /**
+   * Returns the names of the queries in this bundle that this document matches
+   * to.
+   */
+  const std::vector<std::string>& queries() const {
+    return queries_;
+  }
+
+ private:
+  model::DocumentKey key_;
+  model::SnapshotVersion read_time_;
+  bool exists_ = false;
+  std::vector<std::string> queries_;
+};
+
+inline bool operator==(const BundledDocumentMetadata& lhs,
+                       const BundledDocumentMetadata& rhs) {
+  return lhs.key() == rhs.key() && lhs.exists() == rhs.exists() &&
+         lhs.read_time() == rhs.read_time() && lhs.queries() == rhs.queries();
+}
+
+inline bool operator!=(const BundledDocumentMetadata& lhs,
+                       const BundledDocumentMetadata& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_DOCUMENT_METADATA_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_query.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_query.h
new file mode 100644
index 0000000..af2296d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/bundled_query.h	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_QUERY_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_QUERY_H_
+
+#include <utility>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/target.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * A bundled query represents a query target and its limit type.
+ */
+class BundledQuery {
+ public:
+  BundledQuery() = default;
+
+  BundledQuery(core::Target target, core::LimitType limit_type)
+      : target_(std::move(target)), limit_type_(limit_type) {
+  }
+
+  /**
+   * @return The target that represents the user-issued query when building
+   * bundles. Client side transformations are not performed for client-specific
+   * features: order by constraints are not inverted for limit to last queries,
+   * for example.
+   */
+  const core::Target& target() const {
+    return target_;
+  }
+
+  /** @return The user provided limit type. */
+  core::LimitType limit_type() const {
+    return limit_type_;
+  }
+
+ private:
+  core::Target target_;
+  core::LimitType limit_type_;
+};
+
+inline bool operator==(const BundledQuery& lhs, const BundledQuery& rhs) {
+  return lhs.target() == rhs.target() && lhs.limit_type() == rhs.limit_type();
+}
+
+inline bool operator!=(const BundledQuery& lhs, const BundledQuery& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_BUNDLED_QUERY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/named_query.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/named_query.h
new file mode 100644
index 0000000..93b796e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/bundle/named_query.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_BUNDLE_NAMED_QUERY_H_
+#define FIRESTORE_CORE_SRC_BUNDLE_NAMED_QUERY_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/bundle/bundled_query.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+
+/**
+ * Represents a named query saved by the SDK in its local storage.
+ */
+class NamedQuery : public BundleElement {
+ public:
+  NamedQuery() = default;
+
+  NamedQuery(std::string query_name,
+             BundledQuery bundled_query,
+             model::SnapshotVersion read_time)
+      : query_name_(std::move(query_name)),
+        bundled_query_(std::move(bundled_query)),
+        read_time_(read_time) {
+  }
+
+  Type element_type() const override {
+    return Type::NamedQuery;
+  }
+
+  /**
+   * @return The name of the query.
+   */
+  const std::string& query_name() const {
+    return query_name_;
+  }
+
+  /**
+   * @return The underlying query associated with the given name.
+   */
+  const BundledQuery& bundled_query() const {
+    return bundled_query_;
+  }
+
+  /**
+   * @return The time at which the results for this query were read.
+   */
+  model::SnapshotVersion read_time() const {
+    return read_time_;
+  }
+
+ private:
+  std::string query_name_;
+  BundledQuery bundled_query_;
+  model::SnapshotVersion read_time_;
+};
+
+inline bool operator==(const NamedQuery& lhs, const NamedQuery& rhs) {
+  return lhs.query_name() == rhs.query_name() &&
+         lhs.read_time() == rhs.read_time() &&
+         lhs.bundled_query() == rhs.bundled_query();
+}
+
+inline bool operator!=(const NamedQuery& lhs, const NamedQuery& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace bundle
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_BUNDLE_NAMED_QUERY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.cc
new file mode 100644
index 0000000..bb57b7d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.cc	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/array_contains_any_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Contains;
+using model::Document;
+using model::FieldPath;
+using model::IsArray;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class ArrayContainsAnyFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(
+            std::move(field), Operator::ArrayContainsAny, std::move(value)) {
+    HARD_ASSERT(IsArray(this->value()),
+                "ArrayContainsAnyFilter expects an ArrayValue");
+  }
+
+  Type type() const override {
+    return Type::kArrayContainsAnyFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+};
+
+ArrayContainsAnyFilter::ArrayContainsAnyFilter(
+    const model::FieldPath& field,
+    SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<Rep>(field, std::move(value))) {
+}
+
+bool ArrayContainsAnyFilter::Rep::Matches(const Document& doc) const {
+  const google_firestore_v1_ArrayValue& array_value = value().array_value;
+  absl::optional<google_firestore_v1_Value> maybe_lhs = doc->field(field());
+  if (!maybe_lhs) return false;
+
+  const google_firestore_v1_Value& lhs = *maybe_lhs;
+  if (!IsArray(lhs)) return false;
+
+  for (pb_size_t i = 0; i < lhs.array_value.values_count; ++i) {
+    if (Contains(array_value, lhs.array_value.values[i])) {
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.h
new file mode 100644
index 0000000..8367523
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_any_filter.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_ANY_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_ANY_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class FieldPath;
+class FieldValue;
+}  // namespace model
+
+namespace core {
+
+/**
+ * A Filter that implements the array-contains-any operator.
+ */
+class ArrayContainsAnyFilter : public FieldFilter {
+ public:
+  /** Creates a new array-contains-any filter. Takes ownership of `value`. */
+  ArrayContainsAnyFilter(
+      const model::FieldPath& field,
+      nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_ANY_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.cc
new file mode 100644
index 0000000..d0609d8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.cc	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/array_contains_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Contains;
+using model::Document;
+using model::FieldPath;
+using model::IsArray;
+using nanopb::SharedMessage;
+using Operator = Filter::Operator;
+
+class ArrayContainsFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(
+            std::move(field), Operator::ArrayContains, std::move(value)) {
+  }
+
+  Type type() const override {
+    return Type::kArrayContainsFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+};
+
+ArrayContainsFilter::ArrayContainsFilter(
+    const model::FieldPath& field,
+    SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, std::move(value))) {
+}
+
+bool ArrayContainsFilter::Rep::Matches(const Document& doc) const {
+  absl::optional<google_firestore_v1_Value> maybe_lhs = doc->field(field());
+  if (!maybe_lhs) return false;
+
+  const google_firestore_v1_Value& lhs = *maybe_lhs;
+  if (!IsArray(lhs)) return false;
+
+  const google_firestore_v1_ArrayValue& contents = lhs.array_value;
+  return Contains(contents, value());
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.h
new file mode 100644
index 0000000..5f50287
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/array_contains_filter.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class FieldPath;
+class FieldValue;
+}  // namespace model
+
+namespace core {
+
+/**
+ * A Filter that implements the array-contains operator.
+ */
+class ArrayContainsFilter : public FieldFilter {
+ public:
+  /** Creates a new array-contains filter. Takes ownership of `value`. */
+  ArrayContainsFilter(const model::FieldPath& field,
+                      nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_ARRAY_CONTAINS_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.cc
new file mode 100644
index 0000000..d39d868
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.cc	
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/bound.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/core/order_by.h"
+#include "Firestore/core/src/immutable/append_only_list.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/to_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Compare;
+using model::DocumentKey;
+using model::FieldPath;
+using model::GetTypeOrder;
+using model::TypeOrder;
+using nanopb::SharedMessage;
+using util::ComparisonResult;
+
+Bound Bound::FromValue(SharedMessage<google_firestore_v1_ArrayValue> position,
+                       bool is_before) {
+  model::SortFields(*position);
+  return Bound(std::move(position), is_before);
+}
+
+bool Bound::SortsBeforeDocument(const OrderByList& order_by,
+                                const model::Document& document) const {
+  HARD_ASSERT(position_->values_count <= order_by.size(),
+              "Bound has more components than the provided order by.");
+
+  ComparisonResult result = ComparisonResult::Same;
+  for (size_t idx = 0; idx < position_->values_count; ++idx) {
+    const google_firestore_v1_Value& field_value = position_->values[idx];
+    const OrderBy& ordering_component = order_by[idx];
+
+    ComparisonResult comparison;
+    if (ordering_component.field() == FieldPath::KeyFieldPath()) {
+      HARD_ASSERT(
+          GetTypeOrder(field_value) == TypeOrder ::kReference,
+          "Bound has a non-key value where the key path is being used %s",
+          field_value.ToString());
+      auto key = DocumentKey::FromName(
+          nanopb::MakeString(field_value.reference_value));
+      comparison = key.CompareTo(document->key());
+
+    } else {
+      absl::optional<google_firestore_v1_Value> doc_value =
+          document->field(ordering_component.field());
+      HARD_ASSERT(
+          doc_value.has_value(),
+          "Field should exist since document matched the orderBy already.");
+      comparison = Compare(field_value, *doc_value);
+    }
+
+    comparison = ordering_component.direction().ApplyTo(comparison);
+    if (!util::Same(comparison)) {
+      result = comparison;
+      break;
+    }
+  }
+
+  return before_ ? result <= ComparisonResult::Same
+                 : result < ComparisonResult::Same;
+}
+
+std::string Bound::CanonicalId() const {
+  std::string result = before_ ? "b:" : "a:";
+  for (pb_size_t i = 0; i < position_->values_count; ++i) {
+    result.append(model::CanonicalId(position_->values[i]));
+  }
+  return result;
+}
+
+std::string Bound::ToString() const {
+  return util::StringFormat("Bound(position=%s, before=%s)",
+                            model::CanonicalId(*position_),
+                            util::ToString(before_));
+}
+
+std::ostream& operator<<(std::ostream& os, const Bound& bound) {
+  return os << bound.ToString();
+}
+
+bool operator==(const Bound& lhs, const Bound& rhs) {
+  return *lhs.position() == *rhs.position() && lhs.before() == rhs.before();
+}
+
+size_t Bound::Hash() const {
+  return util::Hash(model::CanonicalId(*position_), before_);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.h
new file mode 100644
index 0000000..ca5f36a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/bound.h	
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_BOUND_H_
+#define FIRESTORE_CORE_SRC_CORE_BOUND_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * Bound represents the starting or ending position in query results.
+ *
+ * The bound is specified with components representing a position in the results
+ * and whether it's just before or just after the position (relative to whatever
+ * the query order is).
+ *
+ * The position represents a logical index position for a query. It's a prefix
+ * of values for the (potentially implicit) order by clauses of a query.
+ *
+ * Bound provides a function to determine whether a document comes before or
+ * after a bound. This is influenced by whether the position is just before or
+ * just after the provided values.
+ */
+class Bound {
+ public:
+  /**
+   * Creates a new bound.
+   *
+   * @param position The position relative to the sort order.
+   * @param is_before Whether this bound is just before or just after the
+   *     position.
+   */
+  static Bound FromValue(
+      nanopb::SharedMessage<google_firestore_v1_ArrayValue> position,
+      bool is_before);
+
+  /**
+   * The index position of this bound represented as an array of field values.
+   */
+  const nanopb::SharedMessage<google_firestore_v1_ArrayValue> position() const {
+    return position_;
+  }
+
+  /** Whether this bound is just before or just after the provided position */
+  bool before() const {
+    return before_;
+  }
+
+  /**
+   * Returns true if the given document comes before this bound using the
+   * provided sort order.
+   */
+  bool SortsBeforeDocument(const OrderByList& order_by,
+                           const model::Document& document) const;
+
+  std::string CanonicalId() const;
+
+  std::string ToString() const;
+
+  size_t Hash() const;
+
+ private:
+  Bound(nanopb::SharedMessage<google_firestore_v1_ArrayValue> position,
+        bool is_before)
+      : position_{std::move(position)}, before_(is_before) {
+  }
+
+  nanopb::SharedMessage<google_firestore_v1_ArrayValue> position_;
+  bool before_;
+};
+
+std::ostream& operator<<(std::ostream& os, const Bound& bound);
+
+bool operator==(const Bound& lhs, const Bound& rhs);
+
+inline bool operator!=(const Bound& lhs, const Bound& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_BOUND_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/core_fwd.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/core_fwd.h
new file mode 100644
index 0000000..99919c5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/core_fwd.h	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_CORE_FWD_H_
+#define FIRESTORE_CORE_SRC_CORE_CORE_FWD_H_
+
+#include <functional>
+#include <memory>
+#include <string>
+
+namespace firebase {
+namespace firestore {
+
+namespace immutable {
+template <typename T>
+class AppendOnlyList;
+}  // namespace immutable
+
+namespace util {
+class Status;
+
+struct Empty;
+
+using StatusCallback = std::function<void(Status)>;
+}  // namespace util
+
+namespace core {
+
+class Bound;
+class DatabaseInfo;
+class Direction;
+class EventManager;
+class FieldFilter;
+class Filter;
+class FirestoreClient;
+class ListenOptions;
+class OrderBy;
+class ParsedSetData;
+class ParsedUpdateData;
+class Query;
+class QueryListener;
+class SyncEngine;
+class SyncEngineCallback;
+class Target;
+class TargetIdGenerator;
+class Transaction;
+class ViewDocumentChanges;
+class ViewChange;
+class View;
+class DocumentViewChange;
+class DocumentViewChangeSet;
+class ViewSnapshot;
+
+template <typename T>
+class AsyncEventListener;
+
+template <typename T>
+class EventListener;
+
+using CollectionGroupId = std::shared_ptr<const std::string>;
+
+using FilterList = immutable::AppendOnlyList<Filter>;
+
+using OrderByList = immutable::AppendOnlyList<OrderBy>;
+
+using TransactionResultCallback = util::StatusCallback;
+
+using TransactionUpdateCallback = std::function<void(
+    std::shared_ptr<Transaction>, TransactionResultCallback)>;
+
+using ViewSnapshotListener = std::unique_ptr<EventListener<ViewSnapshot>>;
+
+using ViewSnapshotSharedListener = std::shared_ptr<EventListener<ViewSnapshot>>;
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_CORE_FWD_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.cc
new file mode 100644
index 0000000..744e798
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.cc	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/database_info.h"
+
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+DatabaseInfo::DatabaseInfo(model::DatabaseId database_id,
+                           std::string persistence_key,
+                           std::string host,
+                           bool ssl_enabled)
+    : database_id_{std::move(database_id)},
+      persistence_key_{std::move(persistence_key)},
+      host_{std::move(host)},
+      ssl_enabled_{ssl_enabled} {
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.h
new file mode 100644
index 0000000..d80a5f2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/database_info.h	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_DATABASE_INFO_H_
+#define FIRESTORE_CORE_SRC_CORE_DATABASE_INFO_H_
+
+#include <string>
+
+#include "Firestore/core/src/model/database_id.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/** DatabaseInfo contains data about the database. */
+class DatabaseInfo {
+ public:
+  /**
+   * Creates a new DatabaseInfo.
+   *
+   * @param database_id The project/database to use.
+   * @param persistence_key A unique identifier for this Firestore's local
+   *        storage. Usually derived from -[FIRApp appName].
+   * @param host The hostname of the Firestore backend.
+   * @param ssl_enabled Whether to use SSL when connecting.
+   */
+  DatabaseInfo(model::DatabaseId database_id,
+               std::string persistence_key,
+               std::string host,
+               bool ssl_enabled);
+
+  DatabaseInfo() = default;
+
+  const model::DatabaseId& database_id() const {
+    return database_id_;
+  }
+
+  const std::string& persistence_key() const {
+    return persistence_key_;
+  }
+
+  const std::string& host() const {
+    return host_;
+  }
+
+  bool ssl_enabled() const {
+    return ssl_enabled_;
+  }
+
+ private:
+  model::DatabaseId database_id_;
+  std::string persistence_key_;
+  std::string host_;
+  bool ssl_enabled_ = false;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_DATABASE_INFO_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.cc
new file mode 100644
index 0000000..cf1e41c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.cc	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/direction.h"
+
+#include <ostream>
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+const Direction Direction::Ascending(Direction::AscendingModifier);
+const Direction Direction::Descending(Direction::DescendingModifier);
+
+std::string Direction::CanonicalId() const {
+  return comparison_modifier_ == AscendingModifier ? "asc" : "desc";
+}
+
+util::ComparisonResult Direction::ApplyTo(util::ComparisonResult result) const {
+  if (comparison_modifier_ == AscendingModifier) {
+    return result;
+  } else {
+    return util::ReverseOrder(result);
+  }
+}
+
+std::ostream& operator<<(std::ostream& os, const Direction& direction) {
+  return os << direction.CanonicalId();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.h
new file mode 100644
index 0000000..de47fad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/direction.h	
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_DIRECTION_H_
+#define FIRESTORE_CORE_SRC_CORE_DIRECTION_H_
+
+#include <iosfwd>
+#include <string>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/** Interface used for all query orderings. All Directions are immutable. */
+class Direction {
+ public:
+  ABSL_CONST_INIT static const Direction Ascending;
+  ABSL_CONST_INIT static const Direction Descending;
+
+  /**
+   * Creates a Direction from a boolean. This is useful only because the
+   * public Objective-C API uses it.
+   */
+  static const Direction& FromDescending(bool descending) {
+    return descending ? Descending : Ascending;
+  }
+
+  Direction() = default;
+
+  /**
+   * Changes the direction of the given ComparisonResult if the direction is
+   * Descending.
+   */
+  util::ComparisonResult ApplyTo(util::ComparisonResult) const;
+
+  int comparison_modifier() const {
+    return comparison_modifier_;
+  }
+
+  std::string CanonicalId() const;
+
+ private:
+  enum {
+    AscendingModifier = 1,
+    DescendingModifier = -1,
+  };
+
+  constexpr explicit Direction(int comparison_modifier)
+      : comparison_modifier_(comparison_modifier) {
+  }
+  int comparison_modifier_ = AscendingModifier;
+};
+
+std::ostream& operator<<(std::ostream& os, const Direction& direction);
+
+inline bool operator==(const Direction& lhs, const Direction& rhs) {
+  return lhs.comparison_modifier() == rhs.comparison_modifier();
+}
+
+inline bool operator!=(const Direction& lhs, const Direction& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_DIRECTION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_listener.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_listener.h
new file mode 100644
index 0000000..a8edd48
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_listener.h	
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_EVENT_LISTENER_H_
+#define FIRESTORE_CORE_SRC_CORE_EVENT_LISTENER_H_
+
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <utility>
+
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * A general interface for listening to events internally.
+ */
+template <typename T>
+class EventListener {
+ public:
+  static std::unique_ptr<EventListener<T>> Create(
+      util::StatusOrCallback<T> callback);
+
+  virtual ~EventListener() = default;
+
+  /**
+   * OnEvent will be called with the new value or the error if an error
+   * occurred.
+   *
+   * @param maybe_value The value of the event or the error.
+   */
+  virtual void OnEvent(util::StatusOr<T> maybe_value) = 0;
+};
+
+/**
+ * A wrapper around another EventListener that dispatches events asynchronously.
+ */
+template <typename T>
+class AsyncEventListener
+    : public EventListener<T>,
+      public std::enable_shared_from_this<AsyncEventListener<T>> {
+ public:
+  using DelegateListener = std::unique_ptr<EventListener<T>>;
+
+  AsyncEventListener(const std::shared_ptr<util::Executor>& executor,
+                     DelegateListener&& delegate)
+      : executor_(executor), delegate_(std::move(delegate)) {
+  }
+
+  static std::shared_ptr<AsyncEventListener<T>> Create(
+      std::shared_ptr<util::Executor> executor, DelegateListener&& delegate);
+
+  static std::shared_ptr<AsyncEventListener<T>> Create(
+      std::shared_ptr<util::Executor> executor, EventListener<T>&& delegate) {
+    return Create(executor,
+                  absl::make_unique<EventListener>(std::move(delegate)));
+  }
+
+  void OnEvent(util::StatusOr<T> maybe_value) override;
+
+  /**
+   * Synchronously mutes the listener and raises no further events. This method
+   * is thread safe and can be called from any queue.
+   */
+  void Mute();
+
+ private:
+  // PORTING NOTE: Android uses a volatile here but that's not enough in C++.
+  //
+  // In C++, the user can call `ListenerRegistration::Remove` (which calls
+  // `Mute`) and then immediately delete the state backing the listener. Using
+  // a mutex here instead of an atomic ensures that `Mute` won't return until
+  // it's safe to delete the state backing a listener. In Java this is safe
+  // because the state backing the listener is garbage collected so it doesn't
+  // matter if the mute is concurrent with a callback.
+  //
+  // Use a recursive mutex instead of `std::mutex` to avoid deadlock in the case
+  // where a user calls `Remove` from within a callback on that listener.
+  std::recursive_mutex mutex_;
+  bool muted_ = false;
+  std::shared_ptr<util::Executor> executor_;
+  DelegateListener delegate_;
+};
+
+template <typename T>
+std::unique_ptr<EventListener<T>> EventListener<T>::Create(
+    util::StatusOrCallback<T> callback) {
+  class CallbackEventListener : public EventListener<T> {
+   public:
+    explicit CallbackEventListener(util::StatusOrCallback<T>&& callback)
+        : callback_(std::move(callback)) {
+    }
+
+    void OnEvent(util::StatusOr<T> maybe_value) override {
+      callback_(std::move(maybe_value));
+    }
+
+   private:
+    util::StatusOrCallback<T> callback_;
+  };
+
+  return absl::make_unique<CallbackEventListener>(std::move(callback));
+}
+
+template <typename T>
+std::shared_ptr<AsyncEventListener<T>> AsyncEventListener<T>::Create(
+    std::shared_ptr<util::Executor> executor, DelegateListener&& delegate) {
+  return std::make_shared<AsyncEventListener<T>>(executor, std::move(delegate));
+}
+
+template <typename T>
+void AsyncEventListener<T>::Mute() {
+  std::lock_guard<std::recursive_mutex> lock(mutex_);
+  muted_ = true;
+}
+
+template <typename T>
+void AsyncEventListener<T>::OnEvent(util::StatusOr<T> maybe_value) {
+  // Retain a strong reference to this. If the EventManager is sending an error
+  // it will immediately clear its strong reference to this after posting the
+  // event. The strong reference here allows the AsyncEventListener to survive
+  // until the executor gets around to calling.
+  std::shared_ptr<AsyncEventListener<T>> shared_this = this->shared_from_this();
+
+  executor_->Execute([shared_this, maybe_value]() {
+    std::lock_guard<std::recursive_mutex> lock(shared_this->mutex_);
+    if (!shared_this->muted_) {
+      shared_this->delegate_->OnEvent(std::move(maybe_value));
+    }
+  });
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_EVENT_LISTENER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.cc
new file mode 100644
index 0000000..283a834
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.cc	
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/event_manager.h"
+
+#include <utility>
+
+#include "Firestore/core/src/core/query_listener.h"
+#include "Firestore/core/src/core/sync_engine.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using util::Empty;
+
+EventManager::EventManager(QueryEventSource* query_event_source)
+    : query_event_source_(query_event_source) {
+  query_event_source->SetCallback(this);
+}
+
+model::TargetId EventManager::AddQueryListener(
+    std::shared_ptr<core::QueryListener> listener) {
+  const Query& query = listener->query();
+
+  auto inserted = queries_.emplace(query, QueryListenersInfo{});
+  bool first_listen = inserted.second;
+  QueryListenersInfo& query_info = inserted.first->second;
+
+  query_info.listeners.push_back(listener);
+
+  bool raised_event = listener->OnOnlineStateChanged(online_state_);
+  HARD_ASSERT(!raised_event,
+              "OnOnlineStateChanged() shouldn't raise an event "
+              "for brand-new listeners.");
+
+  if (query_info.view_snapshot().has_value()) {
+    raised_event = listener->OnViewSnapshot(query_info.view_snapshot().value());
+    if (raised_event) {
+      RaiseSnapshotsInSyncEvent();
+    }
+  }
+
+  if (first_listen) {
+    query_info.target_id = query_event_source_->Listen(query);
+  }
+  return query_info.target_id;
+}
+
+void EventManager::RemoveQueryListener(
+    std::shared_ptr<core::QueryListener> listener) {
+  const Query& query = listener->query();
+  bool last_listen = false;
+
+  auto found_iter = queries_.find(query);
+  if (found_iter != queries_.end()) {
+    QueryListenersInfo& query_info = found_iter->second;
+    query_info.Erase(listener);
+    last_listen = query_info.listeners.empty();
+  }
+
+  if (last_listen) {
+    queries_.erase(found_iter);
+    query_event_source_->StopListening(query);
+  }
+}
+
+void EventManager::AddSnapshotsInSyncListener(
+    const std::shared_ptr<EventListener<Empty>>& listener) {
+  snapshots_in_sync_listeners_.insert(listener);
+  listener->OnEvent(Empty());
+}
+
+void EventManager::RemoveSnapshotsInSyncListener(
+    const std::shared_ptr<EventListener<Empty>>& listener) {
+  snapshots_in_sync_listeners_.erase(listener);
+}
+
+void EventManager::HandleOnlineStateChange(model::OnlineState online_state) {
+  bool raised_event = false;
+  online_state_ = online_state;
+
+  for (auto&& kv : queries_) {
+    QueryListenersInfo& info = kv.second;
+    for (auto&& listener : info.listeners) {
+      if (listener->OnOnlineStateChanged(online_state_)) {
+        raised_event = true;
+      }
+    }
+  }
+  if (raised_event) {
+    RaiseSnapshotsInSyncEvent();
+  }
+}
+
+void EventManager::RaiseSnapshotsInSyncEvent() {
+  Empty empty{};
+  for (const auto& listener : snapshots_in_sync_listeners_) {
+    listener->OnEvent(empty);
+  }
+}
+
+void EventManager::OnViewSnapshots(
+    std::vector<core::ViewSnapshot>&& snapshots) {
+  bool raised_event = false;
+  for (ViewSnapshot& snapshot : snapshots) {
+    const Query& query = snapshot.query();
+    auto found_iter = queries_.find(query);
+    if (found_iter != queries_.end()) {
+      QueryListenersInfo& query_info = found_iter->second;
+      for (const auto& listener : query_info.listeners) {
+        if (listener->OnViewSnapshot(snapshot)) {
+          raised_event = true;
+        }
+      }
+      query_info.set_view_snapshot(std::move(snapshot));
+    }
+  }
+  if (raised_event) {
+    RaiseSnapshotsInSyncEvent();
+  }
+}
+
+void EventManager::OnError(const core::Query& query,
+                           const util::Status& error) {
+  auto found_iter = queries_.find(query);
+  if (found_iter == queries_.end()) {
+    return;
+  }
+
+  QueryListenersInfo& query_info = found_iter->second;
+  for (const auto& listener : query_info.listeners) {
+    listener->OnError(error);
+  }
+
+  // Remove all listeners. NOTE: We don't need to call
+  // `SyncEngine::StopListening()` after an error.
+  queries_.erase(found_iter);
+}
+
+bool EventManager::QueryListenersInfo::Erase(
+    const std::shared_ptr<QueryListener>& listener) {
+  auto found_iter = absl::c_find(listeners, listener);
+  auto found = found_iter != listeners.end();
+  if (found) {
+    listeners.erase(found_iter);
+  }
+  return found;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.h
new file mode 100644
index 0000000..ba4f2ee
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/event_manager.h	
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_EVENT_MANAGER_H_
+#define FIRESTORE_CORE_SRC_CORE_EVENT_MANAGER_H_
+
+#include <memory>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/sync_engine_callback.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/util/empty.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+class QueryEventSource;
+class QueryListener;
+
+/**
+ * EventManager is responsible for mapping queries to query event listeners.
+ * It handles "fan-out". (Identical queries will re-use the same watch on the
+ * backend.)
+ */
+class EventManager : public SyncEngineCallback {
+ public:
+  explicit EventManager(QueryEventSource* query_event_source_);
+
+  /**
+   * Adds a query listener that will be called with new snapshots for the query.
+   * The EventManager is responsible for multiplexing many listeners to a single
+   * listen in the SyncEngine and will perform a listen if it's the first
+   * QueryListener added for a query.
+   *
+   * Returns the TargetId of the listen call in the SyncEngine.
+   */
+  model::TargetId AddQueryListener(
+      std::shared_ptr<core::QueryListener> listener);
+
+  /**
+   * Removes a previously added listener. It's a no-op if the listener is not
+   * found.
+   */
+  void RemoveQueryListener(std::shared_ptr<core::QueryListener> listener);
+
+  void AddSnapshotsInSyncListener(
+      const std::shared_ptr<EventListener<util::Empty>>& listener);
+  void RemoveSnapshotsInSyncListener(
+      const std::shared_ptr<EventListener<util::Empty>>& listener);
+
+  // Implements `QueryEventCallback`.
+  void HandleOnlineStateChange(model::OnlineState online_state) override;
+  void OnViewSnapshots(std::vector<core::ViewSnapshot>&& snapshots) override;
+  void OnError(const core::Query& query, const util::Status& error) override;
+
+ private:
+  /**
+   * Call all global snapshot listeners that have been set.
+   */
+  void RaiseSnapshotsInSyncEvent();
+
+  /**
+   * Holds the listeners and the last received ViewSnapshot for a query being
+   * tracked by EventManager.
+   */
+  struct QueryListenersInfo {
+    model::TargetId target_id;
+    std::vector<std::shared_ptr<QueryListener>> listeners;
+
+    bool Erase(const std::shared_ptr<QueryListener>& listener);
+
+    const absl::optional<ViewSnapshot>& view_snapshot() const {
+      return snapshot_;
+    }
+
+    void set_view_snapshot(const absl::optional<ViewSnapshot>& snapshot) {
+      snapshot_ = snapshot;
+    }
+
+   private:
+    // Other members are public in this struct, ensure that any reads are
+    // copies by requiring reads to go through a const getter.
+    absl::optional<ViewSnapshot> snapshot_;
+  };
+
+  QueryEventSource* query_event_source_ = nullptr;
+  model::OnlineState online_state_ = model::OnlineState::Unknown;
+  std::unordered_map<core::Query, QueryListenersInfo> queries_;
+  std::unordered_set<std::shared_ptr<EventListener<util::Empty>>>
+      snapshots_in_sync_listeners_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_EVENT_MANAGER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.cc
new file mode 100644
index 0000000..8129bf2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.cc	
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/field_filter.h"
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/core/array_contains_any_filter.h"
+#include "Firestore/core/src/core/array_contains_filter.h"
+#include "Firestore/core/src/core/in_filter.h"
+#include "Firestore/core/src/core/key_field_filter.h"
+#include "Firestore/core/src/core/key_field_in_filter.h"
+#include "Firestore/core/src/core/key_field_not_in_filter.h"
+#include "Firestore/core/src/core/not_in_filter.h"
+#include "Firestore/core/src/core/operator.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/algorithm/container.h"
+#include "absl/strings/str_cat.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Compare;
+using model::FieldPath;
+using model::GetTypeOrder;
+using model::IsArray;
+using model::TypeOrder;
+using nanopb::SharedMessage;
+using util::ComparisonResult;
+
+namespace {
+
+const char* CanonicalName(Filter::Operator op) {
+  switch (op) {
+    case Filter::Operator::LessThan:
+      return "<";
+    case Filter::Operator::LessThanOrEqual:
+      return "<=";
+    case Filter::Operator::Equal:
+      return "==";
+    case Filter::Operator::NotEqual:
+      return "!=";
+    case Filter::Operator::GreaterThanOrEqual:
+      return ">=";
+    case Filter::Operator::GreaterThan:
+      return ">";
+    case Filter::Operator::ArrayContains:
+      // The canonical name for this is array_contains for compatibility with
+      // existing entries in `query_targets` stored on user devices. This cannot
+      // be changed without causing users to lose their associated resume
+      // tokens.
+      return "array_contains";
+    case Filter::Operator::In:
+      return "in";
+    case Filter::Operator::ArrayContainsAny:
+      return "array-contains-any";
+    case Filter::Operator::NotIn:
+      return "not-in";
+  }
+
+  UNREACHABLE();
+}
+
+}  // namespace
+
+FieldFilter FieldFilter::Create(
+    const FieldPath& path,
+    Operator op,
+    SharedMessage<google_firestore_v1_Value> value_rhs) {
+  google_firestore_v1_Value& value = *value_rhs;
+  model::SortFields(value);
+  if (path.IsKeyFieldPath()) {
+    if (op == Filter::Operator::In) {
+      return KeyFieldInFilter(path, std::move(value_rhs));
+    } else if (op == Filter::Operator::NotIn) {
+      return KeyFieldNotInFilter(path, std::move(value_rhs));
+    } else {
+      HARD_ASSERT(!IsArrayOperator(op),
+                  "%s queries don't make sense on document keys.",
+                  CanonicalName(op));
+      return KeyFieldFilter(path, op, std::move(value_rhs));
+    }
+  } else if (op == Operator::ArrayContains) {
+    return ArrayContainsFilter(path, std::move(value_rhs));
+
+  } else if (op == Operator::In) {
+    return InFilter(path, std::move(value_rhs));
+  } else if (op == Operator::ArrayContainsAny) {
+    return ArrayContainsAnyFilter(path, std::move(value_rhs));
+  } else if (op == Operator::NotIn) {
+    return NotInFilter(path, std::move(value_rhs));
+  } else {
+    Rep filter(path, op, value_rhs);
+    return FieldFilter(std::make_shared<const Rep>(std::move(filter)));
+  }
+}
+
+FieldFilter::FieldFilter(const Filter& other) : Filter(other) {
+  HARD_ASSERT(IsAFieldFilter());
+}
+
+FieldFilter::FieldFilter(std::shared_ptr<const Filter::Rep> rep)
+    : Filter(std::move(rep)) {
+}
+
+FieldFilter::Rep::Rep(FieldPath field,
+                      Operator op,
+                      SharedMessage<google_firestore_v1_Value> value_rhs)
+    : field_(std::move(field)), op_(op), value_rhs_(std::move(value_rhs)) {
+}
+
+bool FieldFilter::Rep::IsInequality() const {
+  return op_ == Operator::LessThan || op_ == Operator::LessThanOrEqual ||
+         op_ == Operator::GreaterThan || op_ == Operator::GreaterThanOrEqual ||
+         op_ == Operator::NotEqual || op_ == Operator::NotIn;
+}
+
+bool FieldFilter::Rep::Matches(const model::Document& doc) const {
+  absl::optional<google_firestore_v1_Value> maybe_lhs = doc->field(field_);
+  if (!maybe_lhs) return false;
+
+  const google_firestore_v1_Value& lhs = *maybe_lhs;
+
+  // Types do not have to match in NotEqual filters.
+  if (op_ == Operator::NotEqual) {
+    return MatchesComparison(Compare(lhs, *value_rhs_));
+  }
+
+  // Only compare types with matching backend order (such as double and int).
+  return GetTypeOrder(lhs) == GetTypeOrder(*value_rhs_) &&
+         MatchesComparison(Compare(lhs, *value_rhs_));
+}
+
+bool FieldFilter::Rep::MatchesComparison(ComparisonResult comparison) const {
+  switch (op_) {
+    case Operator::LessThan:
+      return comparison == ComparisonResult::Ascending;
+    case Operator::LessThanOrEqual:
+      return comparison == ComparisonResult::Ascending ||
+             comparison == ComparisonResult::Same;
+    case Operator::Equal:
+      return comparison == ComparisonResult::Same;
+    case Operator::GreaterThanOrEqual:
+      return comparison == ComparisonResult::Descending ||
+             comparison == ComparisonResult::Same;
+    case Operator::GreaterThan:
+      return comparison == ComparisonResult::Descending;
+    case Operator::NotEqual:
+      return comparison != ComparisonResult::Same;
+    default:
+      HARD_FAIL("Operator %s unsuitable for comparison", op_);
+  }
+}
+
+std::string FieldFilter::Rep::CanonicalId() const {
+  return absl::StrCat(field_.CanonicalString(), CanonicalName(op_),
+                      model::CanonicalId(*value_rhs_));
+}
+
+std::string FieldFilter::Rep::ToString() const {
+  return util::StringFormat("%s %s %s", field_.CanonicalString(),
+                            CanonicalName(op_),
+                            model::CanonicalId(*value_rhs_));
+}
+
+size_t FieldFilter::Rep::Hash() const {
+  return util::Hash(field_, op_, model::CanonicalId(*value_rhs_));
+}
+
+bool FieldFilter::Rep::Equals(const Filter::Rep& other) const {
+  if (type() != other.type()) return false;
+
+  const auto& other_rep = static_cast<const FieldFilter::Rep&>(other);
+  return op_ == other_rep.op_ && field_ == other_rep.field_ &&
+         *value_rhs_ == *other_rep.value_rhs_;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.h
new file mode 100644
index 0000000..027f8b6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/field_filter.h	
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_FIELD_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_FIELD_FILTER_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class Document;
+}  // namespace model
+
+namespace core {
+
+/**
+ * FieldFilter is a document filter constraint on a query with a single
+ * relation operator.
+ */
+class FieldFilter : public Filter {
+ public:
+  /**
+   * Creates a Filter instance for the provided path, operator, and value.
+   */
+  static FieldFilter Create(
+      const model::FieldPath& path,
+      Operator op,
+      nanopb::SharedMessage<google_firestore_v1_Value> value_rhs);
+
+  explicit FieldFilter(const Filter& other);
+
+  const model::FieldPath& field() const {
+    return field_filter_rep().field_;
+  }
+
+  Operator op() const {
+    return field_filter_rep().op_;
+  }
+
+  const google_firestore_v1_Value& value() const {
+    return *(field_filter_rep().value_rhs_);
+  }
+
+ protected:
+  class Rep : public Filter::Rep {
+   public:
+    Type type() const override {
+      return Type::kFieldFilter;
+    }
+
+    bool IsAFieldFilter() const override {
+      return true;
+    }
+
+    bool IsInequality() const override;
+
+    const model::FieldPath& field() const override {
+      return field_;
+    }
+
+    Operator op() const {
+      return op_;
+    }
+
+    const google_firestore_v1_Value& value() const {
+      return *value_rhs_;
+    }
+
+    bool Matches(const model::Document& doc) const override;
+
+    std::string CanonicalId() const override;
+
+    std::string ToString() const override;
+
+    size_t Hash() const override;
+
+   protected:
+    /**
+     * Creates a new filter that compares fields and values. Only intended to be
+     * called from Filter::Create().
+     *
+     * The FieldFilter takes ownership of `value_rhs`.
+     *
+     * @param field A path to a field in the document to filter on. The LHS of
+     * the expression.
+     * @param op The binary operator to apply.
+     * @param value_rhs A constant value to compare `field` to. The RHS of the
+     *     expression.
+     */
+    Rep(model::FieldPath field,
+        Operator op,
+        nanopb::SharedMessage<google_firestore_v1_Value> value_rhs);
+
+    bool MatchesComparison(util::ComparisonResult comparison) const;
+
+   private:
+    friend class FieldFilter;
+
+    bool Equals(const Filter::Rep& other) const override;
+
+    /** The left hand side of the relation. A path into a document field. */
+    model::FieldPath field_;
+
+    /** The type of equality/inequality operator to use in the relation. */
+    Operator op_;
+
+    /** The right hand side of the relation. A constant value to compare to. */
+    nanopb::SharedMessage<google_firestore_v1_Value> value_rhs_;
+  };
+
+  explicit FieldFilter(std::shared_ptr<const Filter::Rep> rep);
+
+ private:
+  const Rep& field_filter_rep() const {
+    return static_cast<const Rep&>(rep());
+  }
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_FIELD_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.cc
new file mode 100644
index 0000000..e180a8c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.cc	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/filter.h"
+
+#include <ostream>
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+bool operator==(const Filter& lhs, const Filter& rhs) {
+  return lhs.rep_ == nullptr
+             ? rhs.rep_ == nullptr
+             : (rhs.rep_ != nullptr && lhs.rep_->Equals(*rhs.rep_));
+}
+
+std::ostream& operator<<(std::ostream& os, const Filter& filter) {
+  return os << filter.ToString();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.h
new file mode 100644
index 0000000..0061464
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/filter.h	
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_FILTER_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace immutable {
+template <typename T>
+class AppendOnlyList;
+}  // namespace immutable
+
+namespace core {
+
+/** Interface used for all query filters. All filters are immutable. */
+class Filter {
+ public:
+  /**
+   * Operator is a value relation operator that can be used to filter documents.
+   * It is similar to NSPredicateOperatorType, but only has operators supported
+   * by Firestore.
+   */
+  enum class Operator {
+    LessThan,
+    LessThanOrEqual,
+    Equal,
+    NotEqual,
+    GreaterThanOrEqual,
+    GreaterThan,
+    ArrayContains,
+    In,
+    ArrayContainsAny,
+    NotIn,
+  };
+
+  // For lack of RTTI, all subclasses must identify themselves so that
+  // comparisons properly take type into account.
+  enum class Type {
+    kArrayContainsAnyFilter,
+    kArrayContainsFilter,
+    kFieldFilter,
+    kInFilter,
+    kNotInFilter,
+    kKeyFieldFilter,
+    kKeyFieldInFilter,
+    kKeyFieldNotInFilter,
+  };
+
+  Type type() const {
+    return rep_->type();
+  }
+
+  /**
+   * Returns true if this instance is FieldFilter or any derived class.
+   * Equivalent to `instanceof FieldFilter` on other platforms.
+   *
+   * Note this is different than checking `type() == Type::kFieldFilter` which
+   * is only true if the type is exactly FieldFilter.
+   */
+  bool IsAFieldFilter() const {
+    return rep_->IsAFieldFilter();
+  }
+
+  bool IsInequality() const {
+    return rep_->IsInequality();
+  }
+
+  /** Returns the field the Filter operates over. */
+  const model::FieldPath& field() const {
+    return rep_->field();
+  }
+
+  /** Returns true if a document matches the filter. */
+  bool Matches(const model::Document& doc) const {
+    return rep_->Matches(doc);
+  }
+
+  /** A unique ID identifying the filter; used when serializing queries. */
+  std::string CanonicalId() const {
+    return rep_->CanonicalId();
+  }
+
+  /** A debug description of the Filter. */
+  std::string ToString() const {
+    return rep_->ToString();
+  }
+
+  size_t Hash() const {
+    return rep_->Hash();
+  }
+
+  friend bool operator==(const Filter& lhs, const Filter& rhs);
+
+ protected:
+  class Rep {
+   public:
+    virtual ~Rep() = default;
+
+    virtual Type type() const = 0;
+
+    virtual bool IsAFieldFilter() const {
+      return false;
+    }
+
+    virtual bool IsInequality() const {
+      return false;
+    }
+
+    /** Returns the field the Filter operates over. */
+    virtual const model::FieldPath& field() const = 0;
+
+    /** Returns true if a document matches the filter. */
+    virtual bool Matches(const model::Document& doc) const = 0;
+
+    /** A unique ID identifying the filter; used when serializing queries. */
+    virtual std::string CanonicalId() const = 0;
+
+    virtual bool Equals(const Rep& other) const = 0;
+
+    virtual size_t Hash() const = 0;
+
+    /** A debug description of the Filter. */
+    virtual std::string ToString() const = 0;
+  };
+
+  explicit Filter(std::shared_ptr<const Rep> rep) : rep_(rep) {
+  }
+
+  const Rep& rep() const {
+    return *rep_;
+  }
+
+ private:
+  std::shared_ptr<const Rep> rep_;
+};
+
+inline bool operator!=(const Filter& lhs, const Filter& rhs) {
+  return !(lhs == rhs);
+}
+
+/** A list of Filters, as used in Queries and elsewhere. */
+using FilterList = immutable::AppendOnlyList<Filter>;
+
+std::ostream& operator<<(std::ostream& os, const Filter& filter);
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.cc
new file mode 100644
index 0000000..89f91b5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.cc	
@@ -0,0 +1,554 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/firestore_client.h"
+
+#include <functional>
+#include <future>  // NOLINT(build/c++11)
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/api/document_reference.h"
+#include "Firestore/core/src/api/document_snapshot.h"
+#include "Firestore/core/src/api/query_core.h"
+#include "Firestore/core/src/api/query_snapshot.h"
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/bundle/bundle_reader.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/core/event_manager.h"
+#include "Firestore/core/src/core/query_listener.h"
+#include "Firestore/core/src/core/sync_engine.h"
+#include "Firestore/core/src/core/view.h"
+#include "Firestore/core/src/local/leveldb_opener.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/local_documents_view.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/local/local_store.h"
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/query_engine.h"
+#include "Firestore/core/src/local/query_result.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/remote/connectivity_monitor.h"
+#include "Firestore/core/src/remote/datastore.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/remote/remote_store.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/delayed_constructor.h"
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using api::DocumentReference;
+using api::DocumentSnapshot;
+using api::DocumentSnapshotListener;
+using api::QuerySnapshot;
+using api::QuerySnapshotListener;
+using api::Settings;
+using api::SnapshotMetadata;
+using auth::CredentialsProvider;
+using auth::User;
+using firestore::Error;
+using local::LevelDbOpener;
+using local::LocalStore;
+using local::LruParams;
+using local::MemoryPersistence;
+using local::QueryEngine;
+using local::QueryResult;
+using model::Document;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::Mutation;
+using model::OnlineState;
+using remote::ConnectivityMonitor;
+using remote::Datastore;
+using remote::FirebaseMetadataProvider;
+using remote::RemoteStore;
+using remote::Serializer;
+using util::AsyncQueue;
+using util::Empty;
+using util::Executor;
+using util::Status;
+using util::StatusCallback;
+using util::StatusOr;
+using util::StatusOrCallback;
+using util::ThrowIllegalState;
+using util::TimerId;
+
+static const size_t kMaxConcurrentLimboResolutions = 100;
+
+std::shared_ptr<FirestoreClient> FirestoreClient::Create(
+    const DatabaseInfo& database_info,
+    const api::Settings& settings,
+    std::shared_ptr<CredentialsProvider> credentials_provider,
+    std::shared_ptr<Executor> user_executor,
+    std::shared_ptr<AsyncQueue> worker_queue,
+    std::unique_ptr<FirebaseMetadataProvider> firebase_metadata_provider) {
+  // Have to use `new` because `make_shared` cannot access private constructor.
+  std::shared_ptr<FirestoreClient> shared_client(new FirestoreClient(
+      database_info, std::move(credentials_provider), std::move(user_executor),
+      std::move(worker_queue), std::move(firebase_metadata_provider)));
+
+  std::weak_ptr<FirestoreClient> weak_client(shared_client);
+  auto credential_change_listener = [weak_client, settings](User user) mutable {
+    auto shared_client = weak_client.lock();
+    if (!shared_client) return;
+
+    if (!shared_client->credentials_initialized_) {
+      shared_client->credentials_initialized_ = true;
+
+      // When we register the credentials listener for the first time,
+      // it is invoked synchronously on the calling thread. This ensures that
+      // the first item enqueued on the worker queue is
+      // `FirestoreClient::Initialize()`.
+      shared_client->worker_queue_->Enqueue([shared_client, user, settings] {
+        shared_client->Initialize(user, settings);
+      });
+    } else {
+      shared_client->worker_queue_->Enqueue([shared_client, user] {
+        shared_client->worker_queue_->VerifyIsCurrentQueue();
+
+        LOG_DEBUG("Credential Changed. Current user: %s", user.uid());
+        shared_client->sync_engine_->HandleCredentialChange(user);
+      });
+    }
+  };
+
+  shared_client->credentials_provider_->SetCredentialChangeListener(
+      credential_change_listener);
+
+  HARD_ASSERT(
+      shared_client->credentials_initialized_,
+      "CredentialChangeListener not invoked during client initialization");
+
+  return shared_client;
+}
+
+FirestoreClient::FirestoreClient(
+    const DatabaseInfo& database_info,
+    std::shared_ptr<CredentialsProvider> credentials_provider,
+    std::shared_ptr<Executor> user_executor,
+    std::shared_ptr<AsyncQueue> worker_queue,
+    std::unique_ptr<FirebaseMetadataProvider> firebase_metadata_provider)
+    : database_info_(database_info),
+      credentials_provider_(std::move(credentials_provider)),
+      worker_queue_(std::move(worker_queue)),
+      user_executor_(std::move(user_executor)),
+      firebase_metadata_provider_(std::move(firebase_metadata_provider)) {
+}
+
+void FirestoreClient::Initialize(const User& user, const Settings& settings) {
+  // Do all of our initialization on our own dispatch queue.
+  worker_queue_->VerifyIsCurrentQueue();
+  LOG_DEBUG("Initializing. Current user: %s", user.uid());
+
+  // Note: The initialization work must all be synchronous (we can't dispatch
+  // more work) since external write/listen operations could get queued to run
+  // before that subsequent work completes.
+  if (settings.persistence_enabled()) {
+    LevelDbOpener opener(database_info_);
+
+    auto created =
+        opener.Create(LruParams::WithCacheSize(settings.cache_size_bytes()));
+    // If leveldb fails to start then just throw up our hands: the error is
+    // unrecoverable. There's nothing an end-user can do and nearly all
+    // failures indicate the developer is doing something grossly wrong so we
+    // should stop them cold in their tracks with a failure they can't ignore.
+    HARD_ASSERT(created.ok(), "Failed to open DB: %s",
+                created.status().ToString());
+
+    auto ldb = std::move(created).ValueOrDie();
+    lru_delegate_ = ldb->reference_delegate();
+
+    persistence_ = std::move(ldb);
+    if (settings.gc_enabled()) {
+      ScheduleLruGarbageCollection();
+    }
+  } else {
+    persistence_ = MemoryPersistence::WithEagerGarbageCollector();
+  }
+
+  query_engine_ = absl::make_unique<QueryEngine>();
+  local_store_ = absl::make_unique<LocalStore>(persistence_.get(),
+                                               query_engine_.get(), user);
+  connectivity_monitor_ = ConnectivityMonitor::Create(worker_queue_);
+  auto datastore = std::make_shared<Datastore>(
+      database_info_, worker_queue_, credentials_provider_,
+      connectivity_monitor_.get(), firebase_metadata_provider_.get());
+
+  remote_store_ = absl::make_unique<RemoteStore>(
+      local_store_.get(), std::move(datastore), worker_queue_,
+      connectivity_monitor_.get(), [this](OnlineState online_state) {
+        sync_engine_->HandleOnlineStateChange(online_state);
+      });
+
+  sync_engine_ =
+      absl::make_unique<SyncEngine>(local_store_.get(), remote_store_.get(),
+                                    user, kMaxConcurrentLimboResolutions);
+
+  event_manager_ = absl::make_unique<EventManager>(sync_engine_.get());
+
+  // Setup wiring for remote store.
+  remote_store_->set_sync_engine(sync_engine_.get());
+
+  // NOTE: RemoteStore depends on LocalStore (for persisting stream tokens,
+  // refilling mutation queue, etc.) so must be started after LocalStore.
+  local_store_->Start();
+  remote_store_->Start();
+}
+
+FirestoreClient::~FirestoreClient() {
+  Dispose();
+}
+
+void FirestoreClient::Dispose() {
+  // Prevent new API invocations from enqueueing further work.
+  worker_queue_->EnterRestrictedMode();
+
+  // Clean up internal resources. It's possible that this can race with a call
+  // to `Firestore::ClearPersistence` or `Firestore::Terminate`, but that's OK
+  // because that operation does not rely on any state in this FirestoreClient.
+  std::promise<void> signal_disposing;
+  bool enqueued = worker_queue_->EnqueueEvenWhileRestricted([&, this] {
+    // Once this task has started running, AsyncQueue::Dispose will block on its
+    // completion. Signal as early as possible to lock out even restricted tasks
+    // as early as possible.
+    signal_disposing.set_value();
+
+    TerminateInternal();
+  });
+
+  // If we successfully enqueued the TerminateInternal task then wait for it to
+  // start.
+  //
+  // If the task was not enqueued, we lost the race with some other concurrent
+  // invocation of Dispose. In that case, `signal_disposing` will never be
+  // completed.
+  if (enqueued) {
+    signal_disposing.get_future().wait();
+  }
+
+  worker_queue_->Dispose();
+  user_executor_->Dispose();
+}
+
+void FirestoreClient::TerminateAsync(StatusCallback callback) {
+  worker_queue_->EnterRestrictedMode();
+  worker_queue_->EnqueueEvenWhileRestricted([this, callback] {
+    TerminateInternal();
+
+    if (callback) {
+      user_executor_->Execute([=] { callback(Status::OK()); });
+    }
+  });
+}
+
+void FirestoreClient::TerminateInternal() {
+  if (!remote_store_) return;
+
+  credentials_provider_->SetCredentialChangeListener(nullptr);
+  credentials_provider_.reset();
+
+  // If we've scheduled LRU garbage collection, cancel it.
+  lru_callback_.Cancel();
+
+  remote_store_->Shutdown();
+  persistence_->Shutdown();
+
+  local_store_.reset();
+  query_engine_.reset();
+  event_manager_.reset();
+
+  // Clear the remote store to indicate terminate is complete.
+  remote_store_.reset();
+}
+
+/**
+ * Schedules a callback to try running LRU garbage collection. Reschedules
+ * itself after the GC has run.
+ */
+void FirestoreClient::ScheduleLruGarbageCollection() {
+  std::chrono::milliseconds delay =
+      gc_has_run_ ? regular_gc_delay_ : initial_gc_delay_;
+
+  lru_callback_ = worker_queue_->EnqueueAfterDelay(
+      delay, TimerId::GarbageCollectionDelay, [this] {
+        local_store_->CollectGarbage(lru_delegate_->garbage_collector());
+        gc_has_run_ = true;
+        ScheduleLruGarbageCollection();
+      });
+}
+
+void FirestoreClient::DisableNetwork(StatusCallback callback) {
+  VerifyNotTerminated();
+
+  worker_queue_->Enqueue([this, callback] {
+    remote_store_->DisableNetwork();
+    if (callback) {
+      user_executor_->Execute([=] { callback(Status::OK()); });
+    }
+  });
+}
+
+void FirestoreClient::EnableNetwork(StatusCallback callback) {
+  VerifyNotTerminated();
+
+  worker_queue_->Enqueue([this, callback] {
+    remote_store_->EnableNetwork();
+    if (callback) {
+      user_executor_->Execute([=] { callback(Status::OK()); });
+    }
+  });
+}
+
+void FirestoreClient::WaitForPendingWrites(StatusCallback callback) {
+  VerifyNotTerminated();
+
+  // Dispatch the result back onto the user dispatch queue.
+  auto async_callback = [this, callback](util::Status status) {
+    if (callback) {
+      user_executor_->Execute([=] { callback(std::move(status)); });
+    }
+  };
+
+  worker_queue_->Enqueue([this, async_callback] {
+    sync_engine_->RegisterPendingWritesCallback(std::move(async_callback));
+  });
+}
+
+void FirestoreClient::VerifyNotTerminated() {
+  if (is_terminated()) {
+    ThrowIllegalState("The client has already been terminated.");
+  }
+}
+
+bool FirestoreClient::is_terminated() const {
+  // When the user calls `Terminate`, it puts the `AsyncQueue` into restricted
+  // mode.
+  //
+  // Note that `remote_store_ == nullptr` is not a good test for this because
+  // `remote_store_` is reset asynchronously.
+  return !worker_queue_->is_running();
+}
+
+std::shared_ptr<QueryListener> FirestoreClient::ListenToQuery(
+    Query query, ListenOptions options, ViewSnapshotSharedListener&& listener) {
+  VerifyNotTerminated();
+
+  auto query_listener = QueryListener::Create(
+      std::move(query), std::move(options), std::move(listener));
+
+  worker_queue_->Enqueue([this, query_listener] {
+    event_manager_->AddQueryListener(std::move(query_listener));
+  });
+
+  return query_listener;
+}
+
+void FirestoreClient::RemoveListener(
+    const std::shared_ptr<QueryListener>& listener) {
+  // Checks for termination but does not throw error, allowing it to be an no-op
+  // if client is already terminated.
+  if (is_terminated()) {
+    return;
+  }
+  worker_queue_->Enqueue(
+      [this, listener] { event_manager_->RemoveQueryListener(listener); });
+}
+
+void FirestoreClient::GetDocumentFromLocalCache(
+    const DocumentReference& doc, DocumentSnapshotListener&& callback) {
+  VerifyNotTerminated();
+
+  // TODO(c++14): move `callback` into lambda.
+  auto shared_callback = absl::ShareUniquePtr(std::move(callback));
+  worker_queue_->Enqueue([this, doc, shared_callback] {
+    Document document = local_store_->ReadDocument(doc.key());
+    StatusOr<DocumentSnapshot> maybe_snapshot;
+
+    if (document->is_found_document()) {
+      maybe_snapshot = DocumentSnapshot::FromDocument(
+          doc.firestore(), document,
+          SnapshotMetadata{document->has_local_mutations(),
+                           /*from_cache=*/true});
+    } else if (document->is_no_document()) {
+      maybe_snapshot = DocumentSnapshot::FromNoDocument(
+          doc.firestore(), doc.key(),
+          SnapshotMetadata{/*pending_writes=*/false,
+                           /*from_cache=*/true});
+    } else {
+      maybe_snapshot =
+          Status{Error::kErrorUnavailable,
+                 "Failed to get document from cache. (However, this document "
+                 "may exist on the server. Run again without setting source to "
+                 "FirestoreSourceCache to attempt to retrieve the document "};
+    }
+
+    if (shared_callback) {
+      user_executor_->Execute(
+          [=] { shared_callback->OnEvent(std::move(maybe_snapshot)); });
+    }
+  });
+}
+
+void FirestoreClient::GetDocumentsFromLocalCache(
+    const api::Query& query, QuerySnapshotListener&& callback) {
+  VerifyNotTerminated();
+
+  // TODO(c++14): move `callback` into lambda.
+  auto shared_callback = absl::ShareUniquePtr(std::move(callback));
+  worker_queue_->Enqueue([this, query, shared_callback] {
+    QueryResult query_result = local_store_->ExecuteQuery(
+        query.query(), /* use_previous_results= */ true);
+
+    View view(query.query(), query_result.remote_keys());
+    ViewDocumentChanges view_doc_changes =
+        view.ComputeDocumentChanges(query_result.documents());
+    ViewChange view_change = view.ApplyChanges(view_doc_changes);
+    HARD_ASSERT(
+        view_change.limbo_changes().empty(),
+        "View returned limbo documents during local-only query execution.");
+
+    HARD_ASSERT(view_change.snapshot().has_value(), "Expected a snapshot");
+
+    ViewSnapshot snapshot = std::move(view_change.snapshot()).value();
+    SnapshotMetadata metadata(snapshot.has_pending_writes(),
+                              snapshot.from_cache());
+
+    QuerySnapshot result(query.firestore(), query.query(), std::move(snapshot),
+                         std::move(metadata));
+
+    if (shared_callback) {
+      user_executor_->Execute(
+          [=] { shared_callback->OnEvent(std::move(result)); });
+    }
+  });
+}
+
+void FirestoreClient::WriteMutations(std::vector<Mutation>&& mutations,
+                                     StatusCallback callback) {
+  VerifyNotTerminated();
+
+  // TODO(c++14): move `mutations` into lambda (C++14).
+  worker_queue_->Enqueue([this, mutations, callback]() mutable {
+    if (mutations.empty()) {
+      if (callback) {
+        user_executor_->Execute([=] { callback(Status::OK()); });
+      }
+    } else {
+      sync_engine_->WriteMutations(
+          std::move(mutations), [this, callback](Status error) {
+            // Dispatch the result back onto the user dispatch queue.
+            if (callback) {
+              user_executor_->Execute([=] { callback(std::move(error)); });
+            }
+          });
+    }
+  });
+}
+
+void FirestoreClient::Transaction(int retries,
+                                  TransactionUpdateCallback update_callback,
+                                  TransactionResultCallback result_callback) {
+  VerifyNotTerminated();
+
+  // Dispatch the result back onto the user dispatch queue.
+  auto async_callback = [this, result_callback](Status status) {
+    if (result_callback) {
+      user_executor_->Execute([=] { result_callback(std::move(status)); });
+    }
+  };
+
+  worker_queue_->Enqueue([this, retries, update_callback, async_callback] {
+    sync_engine_->Transaction(retries, worker_queue_,
+                              std::move(update_callback),
+                              std::move(async_callback));
+  });
+}
+
+void FirestoreClient::AddSnapshotsInSyncListener(
+    const std::shared_ptr<EventListener<Empty>>& user_listener) {
+  worker_queue_->Enqueue([this, user_listener] {
+    event_manager_->AddSnapshotsInSyncListener(std::move(user_listener));
+  });
+}
+
+void FirestoreClient::RemoveSnapshotsInSyncListener(
+    const std::shared_ptr<EventListener<Empty>>& user_listener) {
+  worker_queue_->Enqueue([this, user_listener] {
+    event_manager_->RemoveSnapshotsInSyncListener(user_listener);
+  });
+}
+
+void FirestoreClient::LoadBundle(
+    std::unique_ptr<util::ByteStream> bundle_data,
+    std::shared_ptr<api::LoadBundleTask> result_task) {
+  VerifyNotTerminated();
+
+  bundle::BundleSerializer bundle_serializer(
+      remote::Serializer(database_info_.database_id()));
+  auto reader = std::make_shared<bundle::BundleReader>(
+      std::move(bundle_serializer), std::move(bundle_data));
+  worker_queue_->Enqueue([this, reader, result_task] {
+    sync_engine_->LoadBundle(std::move(reader), std::move(result_task));
+  });
+}
+
+void FirestoreClient::GetNamedQuery(const std::string& name,
+                                    api::QueryCallback callback) {
+  VerifyNotTerminated();
+
+  // Dispatch the result back onto the user dispatch queue.
+  auto async_callback =
+      [this, callback](const absl::optional<bundle::NamedQuery>& named_query) {
+        if (callback) {
+          if (named_query.has_value()) {
+            const Target& target = named_query.value().bundled_query().target();
+            Query query(target.path(), target.collection_group(),
+                        target.filters(), target.order_bys(), target.limit(),
+                        named_query.value().bundled_query().limit_type(),
+                        target.start_at(), target.end_at());
+            user_executor_->Execute([query, callback] {
+              callback(std::move(query), /*found=*/true);
+            });
+          } else {
+            user_executor_->Execute(
+                [callback] { callback(Query(), /*found=*/false); });
+          }
+        }
+      };
+
+  worker_queue_->Enqueue([this, name, async_callback] {
+    async_callback(local_store_->GetNamedQuery(name));
+  });
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.h
new file mode 100644
index 0000000..df4ccbb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/firestore_client.h	
@@ -0,0 +1,241 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_FIRESTORE_CLIENT_H_
+#define FIRESTORE_CORE_SRC_CORE_FIRESTORE_CLIENT_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/api/api_fwd.h"
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/bundle/bundle_serializer.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/byte_stream.h"
+#include "Firestore/core/src/util/delayed_constructor.h"
+#include "Firestore/core/src/util/empty.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/nullability.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace auth {
+class CredentialsProvider;
+class User;
+}  // namespace auth
+
+namespace local {
+class LocalStore;
+class LruDelegate;
+class Persistence;
+class QueryEngine;
+}  // namespace local
+
+namespace model {
+class Mutation;
+}  // namespace model
+
+namespace remote {
+class ConnectivityMonitor;
+class FirebaseMetadataProvider;
+class RemoteStore;
+}  // namespace remote
+
+namespace core {
+
+/**
+ * FirestoreClient is a top-level class that constructs and owns all of the
+ * pieces of the client SDK architecture.
+ */
+class FirestoreClient : public std::enable_shared_from_this<FirestoreClient> {
+ public:
+  /**
+   * Creates a fully initialized `FirestoreClient`.
+   *
+   * PORTING NOTE: We use factory function instead of public constructor
+   * because `FirestoreClient` is supposed to be managed by shared_ptr, and
+   * it is invalid to call `shared_from_this()` from constructors.
+   * The factory function enforces that `FirestoreClient` has to be managed
+   * by a shared pointer.
+   */
+  static std::shared_ptr<FirestoreClient> Create(
+      const DatabaseInfo& database_info,
+      const api::Settings& settings,
+      std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+      std::shared_ptr<util::Executor> user_executor,
+      std::shared_ptr<util::AsyncQueue> worker_queue,
+      std::unique_ptr<remote::FirebaseMetadataProvider>
+          firebase_metadata_provider);
+
+  ~FirestoreClient();
+
+  /**
+   * Synchronously destroys this client, cancels all writes / listeners, and
+   * releases all resources.
+   */
+  void Dispose();
+
+  /**
+   * Terminates this client, cancels all writes / listeners, and releases all
+   * resources.
+   */
+  void TerminateAsync(util::StatusCallback callback);
+
+  /**
+   * Passes a callback that is triggered when all the pending writes at the
+   * time when this method is called received server acknowledgement.
+   * An acknowledgement can be either acceptance or rejections.
+   */
+  void WaitForPendingWrites(util::StatusCallback callback);
+
+  /** Disables the network connection. Pending operations will not complete. */
+  void DisableNetwork(util::StatusCallback callback);
+
+  /** Enables the network connection and requeues all pending operations. */
+  void EnableNetwork(util::StatusCallback callback);
+
+  /** Starts listening to a query. */
+  std::shared_ptr<QueryListener> ListenToQuery(
+      Query query,
+      ListenOptions options,
+      ViewSnapshotSharedListener&& listener);
+
+  /** Stops listening to a query previously listened to. */
+  void RemoveListener(const std::shared_ptr<core::QueryListener>& listener);
+
+  /**
+   * Retrieves a document from the cache via the indicated callback. If the doc
+   * doesn't exist, an error will be sent to the callback.
+   */
+  void GetDocumentFromLocalCache(const api::DocumentReference& doc,
+                                 api::DocumentSnapshotListener&& callback);
+
+  /**
+   * Retrieves a (possibly empty) set of documents from the cache via the
+   * indicated callback.
+   */
+  void GetDocumentsFromLocalCache(const api::Query& query,
+                                  api::QuerySnapshotListener&& callback);
+
+  /**
+   * Write mutations. callback will be notified when it's written to the
+   * backend.
+   */
+  void WriteMutations(std::vector<model::Mutation>&& mutations,
+                      util::StatusCallback callback);
+
+  /**
+   * Tries to execute the transaction in update_callback up to retries times.
+   */
+  void Transaction(int retries,
+                   TransactionUpdateCallback update_callback,
+                   TransactionResultCallback result_callback);
+
+  /**
+   * Adds a listener to be called when a snapshots-in-sync event fires.
+   */
+  void AddSnapshotsInSyncListener(
+      const std::shared_ptr<EventListener<util::Empty>>& listener);
+
+  /**
+   * Removes a specific listener for snapshots-in-sync events.
+   */
+  void RemoveSnapshotsInSyncListener(
+      const std::shared_ptr<EventListener<util::Empty>>& listener);
+
+  /** The database ID of the DatabaseInfo this client was initialized with. */
+  const model::DatabaseId& database_id() const {
+    return database_info_.database_id();
+  }
+
+  /**
+   * Dispatch queue for user callbacks / events. This will often be the "Main
+   * Dispatch Queue" of the app but the developer can configure it to a
+   * different queue if they so choose.
+   */
+  const std::shared_ptr<util::Executor>& user_executor() const {
+    return user_executor_;
+  }
+
+  void LoadBundle(std::unique_ptr<util::ByteStream> bundle_data,
+                  std::shared_ptr<api::LoadBundleTask> result_task);
+
+  void GetNamedQuery(const std::string& name, api::QueryCallback callback);
+
+  /** For usage in this class and testing only. */
+  const std::shared_ptr<util::AsyncQueue>& worker_queue() const {
+    return worker_queue_;
+  }
+  bool is_terminated() const;
+
+ private:
+  FirestoreClient(
+      const DatabaseInfo& database_info,
+      std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+      std::shared_ptr<util::Executor> user_executor,
+      std::shared_ptr<util::AsyncQueue> worker_queue,
+      std::unique_ptr<remote::FirebaseMetadataProvider>
+          firebase_metadata_provider);
+
+  void Initialize(const auth::User& user, const api::Settings& settings);
+
+  void VerifyNotTerminated();
+
+  void TerminateInternal();
+
+  void ScheduleLruGarbageCollection();
+
+  DatabaseInfo database_info_;
+  std::shared_ptr<auth::CredentialsProvider> credentials_provider_;
+  /**
+   * Async queue responsible for all of our internal processing. When we get
+   * incoming work from the user (via public API) or the network (incoming gRPC
+   * messages), we should always dispatch onto this queue. This ensures our
+   * internal data structures are never accessed from multiple threads
+   * simultaneously.
+   */
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  std::shared_ptr<util::Executor> user_executor_;
+
+  std::unique_ptr<remote::FirebaseMetadataProvider> firebase_metadata_provider_;
+
+  std::unique_ptr<local::Persistence> persistence_;
+  std::unique_ptr<local::LocalStore> local_store_;
+  std::unique_ptr<local::QueryEngine> query_engine_;
+  std::unique_ptr<remote::ConnectivityMonitor> connectivity_monitor_;
+  std::unique_ptr<remote::RemoteStore> remote_store_;
+  std::unique_ptr<SyncEngine> sync_engine_;
+  std::unique_ptr<EventManager> event_manager_;
+
+  std::chrono::milliseconds initial_gc_delay_ = std::chrono::minutes(1);
+  std::chrono::milliseconds regular_gc_delay_ = std::chrono::minutes(5);
+  bool gc_has_run_ = false;
+  bool credentials_initialized_ = false;
+  local::LruDelegate* _Nullable lru_delegate_;
+  util::DelayedOperation lru_callback_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_FIRESTORE_CLIENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.cc
new file mode 100644
index 0000000..642afcc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.cc	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/in_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Contains;
+using model::Document;
+using model::FieldPath;
+using model::IsArray;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class InFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(std::move(field), Operator::In, std::move(value)) {
+    HARD_ASSERT(IsArray(this->value()), "InFilter expects an ArrayValue");
+  }
+
+  Type type() const override {
+    return Type::kInFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+};
+
+InFilter::InFilter(const FieldPath& field,
+                   SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, std::move(value))) {
+}
+
+bool InFilter::Rep::Matches(const Document& doc) const {
+  const google_firestore_v1_ArrayValue& array_value = value().array_value;
+  absl::optional<google_firestore_v1_Value> maybe_lhs = doc->field(field());
+  if (!maybe_lhs) return false;
+  return Contains(array_value, *maybe_lhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.h
new file mode 100644
index 0000000..e8daf23
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/in_filter.h	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_IN_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_IN_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class FieldPath;
+}  // namespace model
+
+namespace core {
+
+/**
+ * A Filter that implements the IN operator.
+ */
+class InFilter : public FieldFilter {
+ public:
+  /** Creates a new 'in' filter. Takes ownership of `value`. */
+  InFilter(const model::FieldPath& field,
+           nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_IN_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.cc
new file mode 100644
index 0000000..ea96890
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.cc	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/key_field_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::DocumentKey;
+using model::FieldPath;
+using model::GetTypeOrder;
+using model::TypeOrder;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class KeyFieldFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field,
+      Operator op,
+      SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(std::move(field), op, std::move(value)) {
+    HARD_ASSERT(GetTypeOrder(this->value()) == TypeOrder::kReference,
+                "KeyFieldFilter expects a ReferenceValue");
+    key_ = DocumentKey::FromName(
+        nanopb::MakeString(this->value().reference_value));
+  }
+
+  Type type() const override {
+    return Type::kKeyFieldFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+
+ private:
+  DocumentKey key_;
+};
+
+KeyFieldFilter::KeyFieldFilter(const FieldPath& field,
+                               Operator op,
+                               SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, op, std::move(value))) {
+}
+
+bool KeyFieldFilter::Rep::Matches(const Document& doc) const {
+  return MatchesComparison(doc->key().CompareTo(key_));
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.h
new file mode 100644
index 0000000..ae8d1b6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_filter.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_KEY_FIELD_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_KEY_FIELD_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * A Filter that matches on key fields (i.e. '__name__').
+ */
+class KeyFieldFilter : public FieldFilter {
+ public:
+  /** Creates a new document key filter. Takes ownership of `value`. */
+  KeyFieldFilter(const model::FieldPath& field,
+                 core::Filter::Operator op,
+                 nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_KEY_FIELD_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.cc
new file mode 100644
index 0000000..e759039
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.cc	
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/key_field_in_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeyHash;
+using model::FieldPath;
+using model::GetTypeOrder;
+using model::IsArray;
+using model::TypeOrder;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class KeyFieldInFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(std::move(field), Operator::In, std::move(value)) {
+    keys_ = ExtractDocumentKeysFromValue(this->value());
+  }
+
+  Type type() const override {
+    return Type::kKeyFieldInFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+
+ private:
+  std::unordered_set<DocumentKey, DocumentKeyHash> keys_;
+};
+
+KeyFieldInFilter::KeyFieldInFilter(
+    const FieldPath& field, SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, std::move(value))) {
+}
+
+bool KeyFieldInFilter::Rep::Matches(const Document& doc) const {
+  return keys_.find(doc->key()) != keys_.end();
+}
+
+std::unordered_set<DocumentKey, DocumentKeyHash>
+KeyFieldInFilter::ExtractDocumentKeysFromValue(
+    const google_firestore_v1_Value& value) {
+  HARD_ASSERT(IsArray(value),
+              "Comparing on key with In/NotIn, but the value was not an Array");
+  std::unordered_set<DocumentKey, DocumentKeyHash> keys;
+  const google_firestore_v1_ArrayValue& array_value = value.array_value;
+  for (pb_size_t i = 0; i < array_value.values_count; ++i) {
+    HARD_ASSERT(GetTypeOrder(array_value.values[i]) == TypeOrder::kReference,
+                "Comparing on key with In/NotIn, but an array value was not"
+                " a Reference");
+    keys.insert(DocumentKey::FromName(
+        nanopb::MakeString(array_value.values[i].reference_value)));
+  }
+  return keys;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.h
new file mode 100644
index 0000000..1f83047
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_in_filter.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_KEY_FIELD_IN_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_KEY_FIELD_IN_FILTER_H_
+
+#include <string>
+#include <unordered_set>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * A Filter that matches on an array of key fields.
+ */
+class KeyFieldInFilter : public FieldFilter {
+ public:
+  /** Creates a new document keys filter. Takes ownership of `value`. */
+  KeyFieldInFilter(const model::FieldPath& field,
+                   nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+
+  static std::unordered_set<model::DocumentKey, model::DocumentKeyHash>
+  ExtractDocumentKeysFromValue(const google_firestore_v1_Value& value);
+
+  friend class KeyFieldNotInFilter;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_KEY_FIELD_IN_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.cc
new file mode 100644
index 0000000..5c25bad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.cc	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/key_field_not_in_filter.h"
+#include "Firestore/core/src/core/key_field_in_filter.h"
+
+#include <memory>
+#include <unordered_set>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeyHash;
+using model::FieldPath;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class KeyFieldNotInFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(std::move(field), Operator::NotIn, std::move(value)) {
+    keys_ = KeyFieldInFilter::ExtractDocumentKeysFromValue(this->value());
+  }
+
+  Type type() const override {
+    return Type::kKeyFieldInFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+
+ private:
+  std::unordered_set<DocumentKey, DocumentKeyHash> keys_;
+};
+
+KeyFieldNotInFilter::KeyFieldNotInFilter(
+    const FieldPath& field, SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, std::move(value))) {
+}
+
+bool KeyFieldNotInFilter::Rep::Matches(const Document& doc) const {
+  return keys_.find(doc->key()) == keys_.end();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.h
new file mode 100644
index 0000000..51ce440
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/key_field_not_in_filter.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_KEY_FIELD_NOT_IN_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_KEY_FIELD_NOT_IN_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * A Filter that matches on key fields not present within an array.
+ */
+class KeyFieldNotInFilter : public FieldFilter {
+ public:
+  /** Creates a new document keys not-in filter. Takes ownership of `value`. */
+  KeyFieldNotInFilter(const model::FieldPath& field,
+                      nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_KEY_FIELD_NOT_IN_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/listen_options.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/listen_options.h
new file mode 100644
index 0000000..cf76d87
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/listen_options.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_LISTEN_OPTIONS_H_
+#define FIRESTORE_CORE_SRC_CORE_LISTEN_OPTIONS_H_
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+class ListenOptions {
+ public:
+  ListenOptions() = default;
+
+  /**
+   * Creates a new ListenOptions.
+   *
+   * @param include_query_metadata_changes Raise events when only metadata of
+   *     the query changes.
+   * @param include_document_metadata_changes Raise events when only metadata of
+   *     documents changes.
+   * @param wait_for_sync_when_online Wait for a sync with the server when
+   *     online, but still raise events while offline
+   */
+  ListenOptions(bool include_query_metadata_changes,
+                bool include_document_metadata_changes,
+                bool wait_for_sync_when_online)
+      : include_query_metadata_changes_(include_query_metadata_changes),
+        include_document_metadata_changes_(include_document_metadata_changes),
+        wait_for_sync_when_online_(wait_for_sync_when_online) {
+  }
+
+  /**
+   * Creates a default ListenOptions, with metadata changes and
+   * wait_for_sync_when_online disabled.
+   */
+  static ListenOptions DefaultOptions() {
+    return ListenOptions(
+        /*include_query_metadata_changes=*/false,
+        /*include_document_metadata_changes=*/false,
+        /*wait_for_sync_when_online=*/false);
+  }
+
+  /**
+   * Creates a ListenOptions which optionally includes both query and document
+   * metadata changes.
+   */
+  static ListenOptions FromIncludeMetadataChanges(
+      bool include_metadata_changes) {
+    return ListenOptions(
+        /*include_query_metadata_changes=*/include_metadata_changes,
+        /*include_document_metadata_changes=*/include_metadata_changes,
+        /*wait_for_sync_when_online=*/false);
+  }
+
+  bool include_query_metadata_changes() const {
+    return include_query_metadata_changes_;
+  }
+
+  bool include_document_metadata_changes() const {
+    return include_document_metadata_changes_;
+  }
+
+  bool wait_for_sync_when_online() const {
+    return wait_for_sync_when_online_;
+  }
+
+ private:
+  bool include_query_metadata_changes_ = false;
+  bool include_document_metadata_changes_ = false;
+  bool wait_for_sync_when_online_ = false;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_LISTEN_OPTIONS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.cc
new file mode 100644
index 0000000..612e6bc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.cc	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/not_in_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Contains;
+using model::Document;
+using model::FieldPath;
+using model::IsArray;
+using model::NullValue;
+using nanopb::SharedMessage;
+
+using Operator = Filter::Operator;
+
+class NotInFilter::Rep : public FieldFilter::Rep {
+ public:
+  Rep(FieldPath field, SharedMessage<google_firestore_v1_Value> value)
+      : FieldFilter::Rep(std::move(field), Operator::NotIn, std::move(value)) {
+    HARD_ASSERT(IsArray(this->value()), "NotInFilter expects an ArrayValue");
+  }
+
+  Type type() const override {
+    return Type::kNotInFilter;
+  }
+
+  bool Matches(const model::Document& doc) const override;
+};
+
+NotInFilter::NotInFilter(const FieldPath& field,
+                         SharedMessage<google_firestore_v1_Value> value)
+    : FieldFilter(std::make_shared<const Rep>(field, std::move(value))) {
+}
+
+bool NotInFilter::Rep::Matches(const Document& doc) const {
+  const google_firestore_v1_ArrayValue& array_value = value().array_value;
+  if (Contains(array_value, *NullValue())) {
+    return false;
+  }
+  absl::optional<google_firestore_v1_Value> maybe_lhs = doc->field(field());
+  return maybe_lhs && !Contains(array_value, *maybe_lhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.h
new file mode 100644
index 0000000..723b63b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/not_in_filter.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_NOT_IN_FILTER_H_
+#define FIRESTORE_CORE_SRC_CORE_NOT_IN_FILTER_H_
+
+#include <string>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * A Filter that implements the not-in operator.
+ */
+class NotInFilter : public FieldFilter {
+ public:
+  /** Creates a new not-in filter. Takes ownership of `value`. */
+  NotInFilter(const model::FieldPath& field,
+              nanopb::SharedMessage<google_firestore_v1_Value> value);
+
+ private:
+  class Rep;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_NOT_IN_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/operator.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/operator.h
new file mode 100644
index 0000000..eac8239
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/operator.h	
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_OPERATOR_H_
+#define FIRESTORE_CORE_SRC_CORE_OPERATOR_H_
+
+#include "Firestore/core/src/core/filter.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+inline bool IsArrayOperator(Filter::Operator op) {
+  return op == Filter::Operator::ArrayContains ||
+         op == Filter::Operator::ArrayContainsAny;
+}
+
+inline bool IsDisjunctiveOperator(Filter::Operator op) {
+  return op == Filter::Operator::In ||
+         op == Filter::Operator::ArrayContainsAny ||
+         op == Filter::Operator::NotIn;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_OPERATOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.cc
new file mode 100644
index 0000000..cb0e4d6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.cc	
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/order_by.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::FieldPath;
+using util::ComparisonResult;
+
+ComparisonResult OrderBy::Compare(const Document& lhs,
+                                  const Document& rhs) const {
+  ComparisonResult result;
+  if (field_ == FieldPath::KeyFieldPath()) {
+    result = lhs->key().CompareTo(rhs->key());
+  } else {
+    absl::optional<google_firestore_v1_Value> value1 = lhs->field(field_);
+    absl::optional<google_firestore_v1_Value> value2 = rhs->field(field_);
+    HARD_ASSERT(value1.has_value() && value2.has_value(),
+                "Trying to compare documents on fields that don't exist.");
+    result = model::Compare(*value1, *value2);
+  }
+
+  return direction_.ApplyTo(result);
+}
+
+std::string OrderBy::CanonicalId() const {
+  return absl::StrCat(field_.CanonicalString(), direction_.CanonicalId());
+}
+
+std::string OrderBy::ToString() const {
+  return util::StringFormat("OrderBy(path=%s, dir=%s)",
+                            field_.CanonicalString(), direction_.CanonicalId());
+}
+
+std::ostream& operator<<(std::ostream& os, const OrderBy& order) {
+  return os << order.ToString();
+}
+
+bool operator==(const OrderBy& lhs, const OrderBy& rhs) {
+  return lhs.field() == rhs.field() && lhs.direction() == rhs.direction();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.h
new file mode 100644
index 0000000..9a7af49
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/order_by.h	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_ORDER_BY_H_
+#define FIRESTORE_CORE_SRC_CORE_ORDER_BY_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/core/direction.h"
+#include "Firestore/core/src/model/field_path.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace immutable {
+template <typename T>
+class AppendOnlyList;
+}  // namespace immutable
+
+namespace model {
+class Document;
+}  // namespace model
+
+namespace util {
+enum class ComparisonResult;
+}  // namespace util
+
+namespace core {
+
+/** OrderBy is a field and direction by which to order query results. */
+class OrderBy {
+ public:
+  static std::shared_ptr<OrderBy> Create(model::FieldPath field,
+                                         Direction direction) {
+    return std::make_shared<OrderBy>(std::move(field), direction);
+  }
+
+  OrderBy() = default;
+
+  /** Creates a new sort order with the given field and direction. */
+  OrderBy(model::FieldPath field, Direction direction)
+      : field_(std::move(field)), direction_(direction) {
+  }
+
+  /** The field by which to sort. */
+  const model::FieldPath& field() const {
+    return field_;
+  }
+
+  /** The direction of the sort. */
+  const Direction& direction() const {
+    return direction_;
+  }
+
+  bool ascending() const {
+    return direction_ == Direction::Ascending;
+  }
+
+  /**
+   * Compares two documents based on the field and direction of this sort
+   * order.
+   */
+  util::ComparisonResult Compare(const model::Document& lhs,
+                                 const model::Document& rhs) const;
+
+  /** A unique ID identifying the filter; used when serializing queries. */
+  std::string CanonicalId() const;
+
+  std::string ToString() const;
+
+ private:
+  model::FieldPath field_;
+  Direction direction_;
+};
+
+/** A list of OrderBys, as used in Queries and elsewhere. */
+using OrderByList = immutable::AppendOnlyList<OrderBy>;
+
+std::ostream& operator<<(std::ostream& os, const OrderBy& order);
+
+bool operator==(const OrderBy& lhs, const OrderBy& rhs);
+
+inline bool operator!=(const OrderBy& lhs, const OrderBy& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_ORDER_BY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.cc
new file mode 100644
index 0000000..5254440
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.cc	
@@ -0,0 +1,358 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/query.h"
+
+#include <algorithm>
+#include <ostream>
+
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/core/operator.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/equality.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/algorithm/container.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using Operator = Filter::Operator;
+using Type = Filter::Type;
+
+using model::Document;
+using model::DocumentComparator;
+using model::DocumentKey;
+using model::FieldPath;
+using model::ResourcePath;
+using util::ComparisonResult;
+
+Query::Query(ResourcePath path, std::string collection_group)
+    : path_(std::move(path)),
+      collection_group_(
+          std::make_shared<const std::string>(std::move(collection_group))) {
+}
+
+// MARK: - Accessors
+
+bool Query::IsDocumentQuery() const {
+  return DocumentKey::IsDocumentKey(path_) && !collection_group_ &&
+         filters_.empty();
+}
+
+bool Query::MatchesAllDocuments() const {
+  return filters_.empty() && limit_ == Target::kNoLimit && !start_at_ &&
+         !end_at_ &&
+         (explicit_order_bys_.empty() ||
+          (explicit_order_bys_.size() == 1 &&
+           explicit_order_bys_.front().field().IsKeyFieldPath()));
+}
+
+const FieldPath* Query::InequalityFilterField() const {
+  for (const auto& filter : filters_) {
+    if (filter.IsInequality()) {
+      return &filter.field();
+    }
+  }
+  return nullptr;
+}
+
+absl::optional<Operator> Query::FindOperator(
+    const std::vector<Operator>& ops) const {
+  for (const auto& filter : filters_) {
+    if (filter.IsAFieldFilter()) {
+      FieldFilter relation_filter(filter);
+      if (absl::c_linear_search(ops, relation_filter.op())) {
+        return relation_filter.op();
+      }
+    }
+  }
+  return absl::nullopt;
+}
+
+const OrderByList& Query::order_bys() const {
+  if (memoized_order_bys_.empty()) {
+    const FieldPath* inequality_field = InequalityFilterField();
+    const FieldPath* first_order_by_field = FirstOrderByField();
+    if (inequality_field && !first_order_by_field) {
+      // In order to implicitly add key ordering, we must also add the
+      // inequality filter field for it to be a valid query. Note that the
+      // default inequality field and key ordering is ascending.
+      if (inequality_field->IsKeyFieldPath()) {
+        memoized_order_bys_ = {
+            OrderBy(FieldPath::KeyFieldPath(), Direction::Ascending),
+        };
+      } else {
+        memoized_order_bys_ = {
+            OrderBy(*inequality_field, Direction::Ascending),
+            OrderBy(FieldPath::KeyFieldPath(), Direction::Ascending),
+        };
+      }
+    } else {
+      HARD_ASSERT(
+          !inequality_field || *inequality_field == *first_order_by_field,
+          "First orderBy %s should match inequality field %s.",
+          first_order_by_field->CanonicalString(),
+          inequality_field->CanonicalString());
+
+      OrderByList result = explicit_order_bys_;
+
+      bool found_explicit_key_order = false;
+      for (const OrderBy& order_by : explicit_order_bys_) {
+        if (order_by.field().IsKeyFieldPath()) {
+          found_explicit_key_order = true;
+          break;
+        }
+      }
+
+      if (!found_explicit_key_order) {
+        // The direction of the implicit key ordering always matches the
+        // direction of the last explicit sort order
+        Direction last_direction = explicit_order_bys_.empty()
+                                       ? Direction::Ascending
+                                       : explicit_order_bys_.back().direction();
+        result = result.emplace_back(FieldPath::KeyFieldPath(), last_direction);
+      }
+
+      memoized_order_bys_ = std::move(result);
+    }
+  }
+  return memoized_order_bys_;
+}
+
+const FieldPath* Query::FirstOrderByField() const {
+  if (explicit_order_bys_.empty()) {
+    return nullptr;
+  }
+
+  return &explicit_order_bys_.front().field();
+}
+
+LimitType Query::limit_type() const {
+  return limit_type_;
+}
+
+int32_t Query::limit() const {
+  HARD_ASSERT(limit_type_ != LimitType::None,
+              "Called limit() when no limit was set");
+  return limit_;
+}
+
+// MARK: - Builder methods
+
+Query Query::AddingFilter(Filter filter) const {
+  HARD_ASSERT(!IsDocumentQuery(), "No filter is allowed for document query");
+
+  const FieldPath* new_inequality_field = nullptr;
+  if (filter.IsInequality()) {
+    new_inequality_field = &filter.field();
+  }
+  const FieldPath* query_inequality_field = InequalityFilterField();
+  HARD_ASSERT(!query_inequality_field || !new_inequality_field ||
+                  *query_inequality_field == *new_inequality_field,
+              "Query must only have one inequality field.");
+
+  // TODO(rsgowman): ensure first orderby must match inequality field
+
+  return Query(path_, collection_group_, filters_.push_back(std::move(filter)),
+               explicit_order_bys_, limit_, limit_type_, start_at_, end_at_);
+}
+
+Query Query::AddingOrderBy(OrderBy order_by) const {
+  HARD_ASSERT(!IsDocumentQuery(), "No ordering is allowed for document query");
+
+  if (explicit_order_bys_.empty()) {
+    const FieldPath* inequality = InequalityFilterField();
+    HARD_ASSERT(inequality == nullptr || *inequality == order_by.field(),
+                "First OrderBy must match inequality field.");
+  }
+
+  return Query(path_, collection_group_, filters_,
+               explicit_order_bys_.push_back(std::move(order_by)), limit_,
+               limit_type_, start_at_, end_at_);
+}
+
+Query Query::WithLimitToFirst(int32_t limit) const {
+  return Query(path_, collection_group_, filters_, explicit_order_bys_, limit,
+               LimitType::First, start_at_, end_at_);
+}
+
+Query Query::WithLimitToLast(int32_t limit) const {
+  return Query(path_, collection_group_, filters_, explicit_order_bys_, limit,
+               LimitType::Last, start_at_, end_at_);
+}
+
+Query Query::StartingAt(Bound bound) const {
+  return Query(path_, collection_group_, filters_, explicit_order_bys_, limit_,
+               limit_type_, std::move(bound), end_at_);
+}
+
+Query Query::EndingAt(Bound bound) const {
+  return Query(path_, collection_group_, filters_, explicit_order_bys_, limit_,
+               limit_type_, start_at_, std::move(bound));
+}
+
+Query Query::AsCollectionQueryAtPath(ResourcePath path) const {
+  return Query(path, /*collection_group=*/nullptr, filters_,
+               explicit_order_bys_, limit_, limit_type_, start_at_, end_at_);
+}
+
+// MARK: - Matching
+
+bool Query::Matches(const Document& doc) const {
+  return doc->is_found_document() && MatchesPathAndCollectionGroup(doc) &&
+         MatchesOrderBy(doc) && MatchesFilters(doc) && MatchesBounds(doc);
+}
+
+bool Query::MatchesPathAndCollectionGroup(const Document& doc) const {
+  const ResourcePath& doc_path = doc->key().path();
+  if (collection_group_) {
+    // NOTE: path_ is currently always empty since we don't expose Collection
+    // Group queries rooted at a document path yet.
+    return doc->key().HasCollectionId(*collection_group_) &&
+           path_.IsPrefixOf(doc_path);
+  } else if (DocumentKey::IsDocumentKey(path_)) {
+    // Exact match for document queries.
+    return path_ == doc_path;
+  } else {
+    // Shallow ancestor queries by default.
+    return path_.IsImmediateParentOf(doc_path);
+  }
+}
+
+bool Query::MatchesFilters(const Document& doc) const {
+  for (const auto& filter : filters_) {
+    if (!filter.Matches(doc)) return false;
+  }
+  return true;
+}
+
+bool Query::MatchesOrderBy(const Document& doc) const {
+  for (const OrderBy& order_by : explicit_order_bys_) {
+    const FieldPath& field_path = order_by.field();
+    // order by key always matches
+    if (field_path != FieldPath::KeyFieldPath() &&
+        doc->field(field_path) == absl::nullopt) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool Query::MatchesBounds(const Document& doc) const {
+  const OrderByList& ordering = order_bys();
+  if (start_at_ && !start_at_->SortsBeforeDocument(ordering, doc)) {
+    return false;
+  }
+  if (end_at_ && end_at_->SortsBeforeDocument(ordering, doc)) {
+    return false;
+  }
+  return true;
+}
+
+model::DocumentComparator Query::Comparator() const {
+  OrderByList ordering = order_bys();
+
+  bool has_key_ordering = false;
+  for (const OrderBy& order_by : ordering) {
+    if (order_by.field() == FieldPath::KeyFieldPath()) {
+      has_key_ordering = true;
+      break;
+    }
+  }
+  HARD_ASSERT(has_key_ordering,
+              "QueryComparator needs to have a key ordering.");
+
+  return DocumentComparator(
+      [ordering](const Document& doc1, const Document& doc2) {
+        for (const OrderBy& order_by : ordering) {
+          ComparisonResult comp = order_by.Compare(doc1, doc2);
+          if (!util::Same(comp)) return comp;
+        }
+        return ComparisonResult::Same;
+      });
+}
+
+const std::string Query::CanonicalId() const {
+  if (limit_type_ != LimitType::None) {
+    return absl::StrCat(ToTarget().CanonicalId(),
+                        "|lt:", (limit_type_ == LimitType::Last) ? "l" : "f");
+  }
+  return ToTarget().CanonicalId();
+}
+
+size_t Query::Hash() const {
+  return util::Hash(CanonicalId());
+}
+
+std::string Query::ToString() const {
+  return absl::StrCat("Query(canonical_id=", CanonicalId(), ")");
+}
+
+const Target& Query::ToTarget() const& {
+  if (memoized_target == nullptr) {
+    if (limit_type_ == LimitType::Last) {
+      // Flip the orderBy directions since we want the last results
+      OrderByList new_order_bys;
+      for (const auto& order_by : order_bys()) {
+        Direction dir = order_by.direction() == Direction::Descending
+                            ? Direction::Ascending
+                            : Direction::Descending;
+        new_order_bys = new_order_bys.push_back(OrderBy(order_by.field(), dir));
+      }
+
+      // We need to swap the cursors to match the now-flipped query ordering.
+      auto new_start_at = end_at_
+                              ? absl::optional<Bound>{Bound::FromValue(
+                                    end_at_->position(), !end_at_->before())}
+                              : absl::nullopt;
+      auto new_end_at = start_at_
+                            ? absl::optional<Bound>{Bound::FromValue(
+                                  start_at_->position(), !start_at_->before())}
+                            : absl::nullopt;
+
+      Target target(path(), collection_group(), filters(), new_order_bys,
+                    limit_, new_start_at, new_end_at);
+      memoized_target = std::make_shared<Target>(std::move(target));
+    } else {
+      Target target(path(), collection_group(), filters(), order_bys(), limit_,
+                    start_at(), end_at());
+      memoized_target = std::make_shared<Target>(std::move(target));
+    }
+  }
+
+  return *memoized_target;
+}
+
+std::ostream& operator<<(std::ostream& os, const Query& query) {
+  return os << query.ToString();
+}
+
+bool operator==(const Query& lhs, const Query& rhs) {
+  return (lhs.limit_type_ == rhs.limit_type_) &&
+         (lhs.ToTarget() == rhs.ToTarget());
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.h
new file mode 100644
index 0000000..0d27f8c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query.h	
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_QUERY_H_
+#define FIRESTORE_CORE_SRC_CORE_QUERY_H_
+
+#include <iosfwd>
+#include <limits>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/order_by.h"
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/immutable/append_only_list.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/resource_path.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+class Bound;
+
+using CollectionGroupId = std::shared_ptr<const std::string>;
+
+enum class LimitType { None, First, Last };
+
+/**
+ * Encapsulates all the query attributes we support in the SDK. It represents
+ * query features visible to user, and can be run against the LocalStore.
+ * `Query` is first convert to `Target` to run against RemoteStore to query
+ * backend results, because `Target` encapsulates features backend knows about.
+ */
+class Query {
+ public:
+  Query() = default;
+
+  explicit Query(model::ResourcePath path,
+                 CollectionGroupId collection_group = nullptr)
+      : path_(std::move(path)), collection_group_(std::move(collection_group)) {
+  }
+
+  /**
+   * Initializes a Query with a path and optional additional query constraints.
+   * Path must currently be empty if this is a collection group query.
+   */
+  Query(model::ResourcePath path,
+        CollectionGroupId collection_group,
+        FilterList filters,
+        OrderByList explicit_order_bys,
+        int32_t limit,
+        LimitType limit_type,
+        absl::optional<Bound> start_at,
+        absl::optional<Bound> end_at)
+      : path_(std::move(path)),
+        collection_group_(std::move(collection_group)),
+        filters_(std::move(filters)),
+        explicit_order_bys_(std::move(explicit_order_bys)),
+        limit_(limit),
+        limit_type_(limit_type),
+        start_at_(std::move(start_at)),
+        end_at_(std::move(end_at)) {
+  }
+
+  Query(model::ResourcePath path, std::string collection_group);
+
+  // MARK: - Accessors
+
+  /** The base path of the query. */
+  const model::ResourcePath& path() const {
+    return path_;
+  }
+
+  /** The collection group of the query, if any. */
+  const std::shared_ptr<const std::string>& collection_group() const {
+    return collection_group_;
+  }
+
+  /** Returns true if this Query is for a specific document. */
+  bool IsDocumentQuery() const;
+
+  /** Returns true if this Query is a collection group query. */
+  bool IsCollectionGroupQuery() const {
+    return collection_group_ != nullptr;
+  }
+
+  /**
+   * Returns true if this query does not specify any query constraints that
+   * could remove results.
+   */
+  bool MatchesAllDocuments() const;
+
+  /** The filters on the documents returned by the query. */
+  const FilterList& filters() const {
+    return filters_;
+  }
+
+  /**
+   * Returns the field of the first filter on this Query that's an inequality,
+   * or nullptr if there are no inequalities.
+   */
+  const model::FieldPath* InequalityFilterField() const;
+
+  /**
+   * Checks if any of the provided filter operators are included in the query
+   * and returns the first one that is, or null if none are.
+   */
+  absl::optional<Filter::Operator> FindOperator(
+      const std::vector<Filter::Operator>& ops) const;
+
+  /**
+   * Returns the list of ordering constraints that were explicitly requested on
+   * the query by the user.
+   *
+   * Note that the actual query performed might add additional sort orders to
+   * match the behavior of the backend.
+   */
+  const OrderByList& explicit_order_bys() const {
+    return explicit_order_bys_;
+  }
+
+  /**
+   * Returns the full list of ordering constraints on the query.
+   *
+   * This might include additional sort orders added implicitly to match the
+   * backend behavior.
+   */
+  const OrderByList& order_bys() const;
+
+  /** Returns the first field in an order-by constraint, or nullptr if none. */
+  const model::FieldPath* FirstOrderByField() const;
+
+  bool has_limit_to_first() const {
+    return limit_type_ == LimitType::First && limit_ != Target::kNoLimit;
+  }
+
+  bool has_limit_to_last() const {
+    return limit_type_ == LimitType::Last && limit_ != Target::kNoLimit;
+  }
+
+  LimitType limit_type() const;
+
+  int32_t limit() const;
+
+  const absl::optional<Bound>& start_at() const {
+    return start_at_;
+  }
+
+  const absl::optional<Bound>& end_at() const {
+    return end_at_;
+  }
+
+  // MARK: - Builder methods
+
+  /**
+   * Returns a copy of this Query object with the additional specified filter.
+   */
+  Query AddingFilter(Filter filter) const;
+
+  /**
+   * Returns a copy of this Query object with the additional specified order by.
+   */
+  Query AddingOrderBy(OrderBy order_by) const;
+
+  /**
+   * Returns a new `Query` that returns the first matching documents up to
+   * the specified number.
+   *
+   * @param limit The maximum number of results to return. If
+   *     `limit == kNoLimit`, then no limit is applied. Otherwise, if
+   *     `limit <= 0`, behavior is unspecified.
+   */
+  Query WithLimitToFirst(int32_t limit) const;
+
+  /**
+   * Returns a new `Query` that returns the last matching documents up to
+   * the specified number.
+   *
+   * You must specify at least one `OrderBy` clause for `LimitToLast` queries,
+   * it is an error otherwise.
+   *
+   * @param limit The maximum number of results to return. If
+   *     `limit == kNoLimit`, then no limit is applied. Otherwise, if
+   *     `limit <= 0`, behavior is unspecified.
+   */
+  Query WithLimitToLast(int32_t limit) const;
+
+  /**
+   * Returns a copy of this Query starting at the provided bound.
+   */
+  Query StartingAt(Bound bound) const;
+
+  /**
+   * Returns a copy of this Query ending at the provided bound.
+   */
+  Query EndingAt(Bound bound) const;
+
+  // MARK: - Matching
+
+  /**
+   * Converts this collection group query into a collection query at a specific
+   * path. This is used when executing collection group queries, since we have
+   * to split the query into a set of collection queries, one for each
+   * collection in the group.
+   */
+  Query AsCollectionQueryAtPath(model::ResourcePath path) const;
+
+  /** Returns true if the document matches the constraints of this query. */
+  bool Matches(const model::Document& doc) const;
+
+  /**
+   * Returns a comparator that will sort documents according to the order by
+   * clauses in this query.
+   */
+  model::DocumentComparator Comparator() const;
+
+  const std::string CanonicalId() const;
+
+  std::string ToString() const;
+
+  /**
+   * Returns a `Target` instance this query will be mapped to in backend
+   * and local store.
+   */
+  const Target& ToTarget() const&;
+
+  friend std::ostream& operator<<(std::ostream& os, const Query& query);
+
+  friend bool operator==(const Query& lhs, const Query& rhs);
+  size_t Hash() const;
+
+ private:
+  bool MatchesPathAndCollectionGroup(const model::Document& doc) const;
+  bool MatchesFilters(const model::Document& doc) const;
+  bool MatchesOrderBy(const model::Document& doc) const;
+  bool MatchesBounds(const model::Document& doc) const;
+
+  model::ResourcePath path_;
+  std::shared_ptr<const std::string> collection_group_;
+
+  // Filters are shared across related Query instance. i.e. when you call
+  // Query::Filter(f), a new Query instance is created that contains all of the
+  // existing filters, plus the new one. (Both Query and Filter objects are
+  // immutable.) Filters are not shared across unrelated Query instances.
+  FilterList filters_;
+
+  // A list of fields given to sort by. This does not include the implicit key
+  // sort at the end.
+  OrderByList explicit_order_bys_;
+
+  // The memoized list of sort orders.
+  mutable OrderByList memoized_order_bys_;
+
+  int32_t limit_ = Target::kNoLimit;
+  LimitType limit_type_ = LimitType::None;
+
+  absl::optional<Bound> start_at_;
+  absl::optional<Bound> end_at_;
+
+  // The corresponding Target of this Query instance.
+  mutable std::shared_ptr<const Target> memoized_target;
+};
+
+bool operator==(const Query& lhs, const Query& rhs);
+inline bool operator!=(const Query& lhs, const Query& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+namespace std {
+
+template <>
+struct hash<firebase::firestore::core::Query> {
+  size_t operator()(const firebase::firestore::core::Query& query) const {
+    return query.Hash();
+  }
+};
+
+}  // namespace std
+
+#endif  // FIRESTORE_CORE_SRC_CORE_QUERY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.cc
new file mode 100644
index 0000000..7f10ae3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.cc	
@@ -0,0 +1,188 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/query_listener.h"
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::OnlineState;
+using model::TargetId;
+using util::Status;
+
+std::shared_ptr<QueryListener> QueryListener::Create(
+    Query query, ListenOptions options, ViewSnapshotSharedListener&& listener) {
+  return std::make_shared<QueryListener>(std::move(query), std::move(options),
+                                         std::move(listener));
+}
+
+std::shared_ptr<QueryListener> QueryListener::Create(
+    Query query, ViewSnapshotSharedListener&& listener) {
+  return Create(std::move(query), ListenOptions::DefaultOptions(),
+                std::move(listener));
+}
+
+std::shared_ptr<QueryListener> QueryListener::Create(
+    Query query,
+    ListenOptions options,
+    util::StatusOrCallback<ViewSnapshot>&& listener) {
+  auto event_listener =
+      EventListener<ViewSnapshot>::Create(std::move(listener));
+  return Create(std::move(query), std::move(options),
+                std::move(event_listener));
+}
+
+std::shared_ptr<QueryListener> QueryListener::Create(
+    Query query, util::StatusOrCallback<ViewSnapshot>&& listener) {
+  return Create(std::move(query), ListenOptions::DefaultOptions(),
+                std::move(listener));
+}
+
+QueryListener::QueryListener(Query query,
+                             ListenOptions options,
+                             ViewSnapshotSharedListener&& listener)
+    : query_(std::move(query)),
+      options_(std::move(options)),
+      listener_(std::move(listener)) {
+}
+
+bool QueryListener::OnViewSnapshot(ViewSnapshot snapshot) {
+  HARD_ASSERT(
+      !snapshot.document_changes().empty() || snapshot.sync_state_changed(),
+      "We got a new snapshot with no changes?");
+  bool raised_event = false;
+  if (!options_.include_document_metadata_changes()) {
+    // Remove the metadata-only changes.
+    std::vector<DocumentViewChange> changes;
+    for (const DocumentViewChange& change : snapshot.document_changes()) {
+      if (change.type() != DocumentViewChange::Type::Metadata) {
+        changes.push_back(change);
+      }
+    }
+
+    snapshot = ViewSnapshot{snapshot.query(),
+                            snapshot.documents(),
+                            snapshot.old_documents(),
+                            std::move(changes),
+                            snapshot.mutated_keys(),
+                            snapshot.from_cache(),
+                            snapshot.sync_state_changed(),
+                            /*excludes_metadata_changes=*/true};
+  }
+
+  if (!raised_initial_event_) {
+    if (ShouldRaiseInitialEvent(snapshot, online_state_)) {
+      RaiseInitialEvent(snapshot);
+      raised_event = true;
+    }
+  } else if (ShouldRaiseEvent(snapshot)) {
+    listener_->OnEvent(snapshot);
+    raised_event = true;
+  }
+
+  snapshot_ = std::move(snapshot);
+  return raised_event;
+}
+
+void QueryListener::OnError(Status error) {
+  listener_->OnEvent(std::move(error));
+}
+
+/**
+ * Returns whether a snaphsot was raised.
+ */
+bool QueryListener::OnOnlineStateChanged(OnlineState online_state) {
+  online_state_ = online_state;
+  bool raised_event = false;
+  if (snapshot_.has_value() && !raised_initial_event_ &&
+      ShouldRaiseInitialEvent(snapshot_.value(), online_state)) {
+    RaiseInitialEvent(snapshot_.value());
+    raised_event = true;
+  }
+  return raised_event;
+}
+
+bool QueryListener::ShouldRaiseInitialEvent(const ViewSnapshot& snapshot,
+                                            OnlineState online_state) const {
+  HARD_ASSERT(!raised_initial_event_,
+              "Determining whether to raise initial event, but already had "
+              "first event.");
+
+  // Always raise the first event when we're synced
+  if (!snapshot.from_cache()) {
+    return true;
+  }
+
+  // NOTE: We consider OnlineState::Unknown as online (it should become Offline
+  // or Online if we wait long enough).
+  bool maybe_online = online_state != OnlineState::Offline;
+
+  // Don't raise the event if we're online, aren't synced yet (checked
+  // above) and are waiting for a sync.
+  if (options_.wait_for_sync_when_online() && maybe_online) {
+    HARD_ASSERT(snapshot.from_cache(),
+                "Waiting for sync, but snapshot is not from cache.");
+    return false;
+  }
+
+  // Raise data from cache if we have any documents or we are offline
+  return !snapshot.documents().empty() || online_state == OnlineState::Offline;
+}
+
+bool QueryListener::ShouldRaiseEvent(const ViewSnapshot& snapshot) const {
+  // We don't need to handle include_document_metadata_changes() here because
+  // the Metadata only changes have already been stripped out if needed. At this
+  // point the only changes we will see are the ones we should propagate.
+  if (!snapshot.document_changes().empty()) {
+    return true;
+  }
+
+  bool has_pending_writes_changed =
+      snapshot_.has_value() &&
+      snapshot_.value().has_pending_writes() != snapshot.has_pending_writes();
+  if (snapshot.sync_state_changed() || has_pending_writes_changed) {
+    return options_.include_query_metadata_changes();
+  }
+
+  // Generally we should have hit one of the cases above, but it's possible to
+  // get here if there were only metadata document changes and they got stripped
+  // out.
+  return false;
+}
+
+void QueryListener::RaiseInitialEvent(const ViewSnapshot& snapshot) {
+  HARD_ASSERT(!raised_initial_event_,
+              "Trying to raise initial events for second time");
+
+  ViewSnapshot modified_snapshot = ViewSnapshot::FromInitialDocuments(
+      snapshot.query(), snapshot.documents(), snapshot.mutated_keys(),
+      snapshot.from_cache(), snapshot.excludes_metadata_changes());
+  raised_initial_event_ = true;
+  listener_->OnEvent(std::move(modified_snapshot));
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.h
new file mode 100644
index 0000000..eec5ada
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/query_listener.h	
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_QUERY_LISTENER_H_
+#define FIRESTORE_CORE_SRC_CORE_QUERY_LISTENER_H_
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/core/listen_options.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * QueryListener takes a series of internal view snapshots and determines when
+ * to raise user-facing events.
+ */
+class QueryListener {
+ public:
+  static std::shared_ptr<QueryListener> Create(
+      Query query,
+      ListenOptions options,
+      ViewSnapshotSharedListener&& listener);
+
+  static std::shared_ptr<QueryListener> Create(
+      Query query, ViewSnapshotSharedListener&& listener);
+
+  static std::shared_ptr<QueryListener> Create(
+      Query query,
+      ListenOptions options,
+      util::StatusOrCallback<ViewSnapshot>&& listener);
+
+  static std::shared_ptr<QueryListener> Create(
+      Query query, util::StatusOrCallback<ViewSnapshot>&& listener);
+
+  QueryListener(Query query,
+                ListenOptions options,
+                ViewSnapshotSharedListener&& listener);
+
+  virtual ~QueryListener() = default;
+
+  const Query& query() const {
+    return query_;
+  }
+
+  /** The last received view snapshot. */
+  const absl::optional<ViewSnapshot>& snapshot() const {
+    return snapshot_;
+  }
+
+  /**
+   * Applies the new ViewSnapshot to this listener, raising a user-facing event
+   * if applicable (depending on what changed, whether the user has opted into
+   * metadata-only changes, etc.). Returns true if a user-facing event was
+   * indeed raised.
+   */
+  virtual bool OnViewSnapshot(ViewSnapshot snapshot);
+
+  virtual void OnError(util::Status error);
+
+  /** Returns whether a snapshot was raised. */
+  virtual bool OnOnlineStateChanged(model::OnlineState online_state);
+
+ private:
+  bool ShouldRaiseInitialEvent(const ViewSnapshot& snapshot,
+                               model::OnlineState online_state) const;
+  bool ShouldRaiseEvent(const ViewSnapshot& snapshot) const;
+  void RaiseInitialEvent(const ViewSnapshot& snapshot);
+
+  Query query_;
+  ListenOptions options_;
+
+  /**
+   * The EventListener that will process ViewSnapshots associated with this
+   * query listener.
+   */
+  ViewSnapshotSharedListener listener_;
+
+  /**
+   * Initial snapshots (e.g. from cache) may not be propagated to the
+   * ViewSnapshotHandler. This flag is set to true once we've actually raised an
+   * event.
+   */
+  bool raised_initial_event_ = false;
+
+  /** The last online state this query listener got. */
+  model::OnlineState online_state_ = model::OnlineState::Unknown;
+
+  absl::optional<ViewSnapshot> snapshot_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_QUERY_LISTENER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.cc
new file mode 100644
index 0000000..1a018c5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.cc	
@@ -0,0 +1,658 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/sync_engine.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/bundle/bundle_element.h"
+#include "Firestore/core/src/bundle/bundle_loader.h"
+#include "Firestore/core/src/core/sync_engine_callback.h"
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/core/transaction_runner.h"
+#include "Firestore/core/src/local/local_documents_view.h"
+#include "Firestore/core/src/local/local_store.h"
+#include "Firestore/core/src/local/local_view_changes.h"
+#include "Firestore/core/src/local/local_write_result.h"
+#include "Firestore/core/src/local/query_result.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/mutation_batch_result.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+namespace {
+
+using auth::User;
+using bundle::BundleElement;
+using bundle::BundleLoader;
+using bundle::InitialProgress;
+using bundle::SuccessProgress;
+using firestore::Error;
+using local::LocalStore;
+using local::LocalViewChanges;
+using local::LocalWriteResult;
+using local::QueryPurpose;
+using local::QueryResult;
+using local::TargetData;
+using model::BatchId;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::DocumentUpdateMap;
+using model::kBatchIdUnknown;
+using model::ListenSequenceNumber;
+using model::MutableDocument;
+using model::SnapshotVersion;
+using model::TargetId;
+using remote::RemoteEvent;
+using remote::TargetChange;
+using util::AsyncQueue;
+using util::Status;
+using util::StatusCallback;
+
+// Limbo documents don't use persistence, and are eagerly GC'd. So, listens for
+// them don't need real sequence numbers.
+const ListenSequenceNumber kIrrelevantSequenceNumber = -1;
+
+bool ErrorIsInteresting(const Status& error) {
+  bool missing_index =
+      (error.code() == Error::kErrorFailedPrecondition &&
+       absl::StrContains(error.error_message(), "requires an index"));
+  bool no_permission = (error.code() == Error::kErrorPermissionDenied);
+  return missing_index || no_permission;
+}
+
+}  // namespace
+
+SyncEngine::SyncEngine(LocalStore* local_store,
+                       remote::RemoteStore* remote_store,
+                       const auth::User& initial_user,
+                       size_t max_concurrent_limbo_resolutions)
+    : local_store_(local_store),
+      remote_store_(remote_store),
+      current_user_(initial_user),
+      target_id_generator_(TargetIdGenerator::SyncEngineTargetIdGenerator()),
+      max_concurrent_limbo_resolutions_(max_concurrent_limbo_resolutions) {
+}
+
+void SyncEngine::AssertCallbackExists(absl::string_view source) {
+  HARD_ASSERT(sync_engine_callback_,
+              "Tried to call '%s' before callback was registered.", source);
+}
+
+TargetId SyncEngine::Listen(Query query) {
+  AssertCallbackExists("Listen");
+
+  HARD_ASSERT(query_views_by_query_.find(query) == query_views_by_query_.end(),
+              "We already listen to query: %s", query.ToString());
+
+  TargetData target_data = local_store_->AllocateTarget(query.ToTarget());
+  ViewSnapshot view_snapshot =
+      InitializeViewAndComputeSnapshot(query, target_data.target_id());
+  std::vector<ViewSnapshot> snapshots;
+  // Not using the `std::initializer_list` constructor to avoid extra copies.
+  snapshots.push_back(std::move(view_snapshot));
+  sync_engine_callback_->OnViewSnapshots(std::move(snapshots));
+
+  // TODO(wuandy): move `target_data` into `Listen`.
+  remote_store_->Listen(target_data);
+  return target_data.target_id();
+}
+
+ViewSnapshot SyncEngine::InitializeViewAndComputeSnapshot(const Query& query,
+                                                          TargetId target_id) {
+  QueryResult query_result =
+      local_store_->ExecuteQuery(query, /* use_previous_results= */ true);
+
+  // If there are already queries mapped to the target id, create a synthesized
+  // target change to apply the sync state from those queries to the new query.
+  auto current_sync_state = SyncState::None;
+  absl::optional<TargetChange> synthesized_current_change;
+  if (queries_by_target_.find(target_id) != queries_by_target_.end()) {
+    const Query& mirror_query = queries_by_target_[target_id][0];
+    current_sync_state =
+        query_views_by_query_[mirror_query]->view().sync_state();
+    synthesized_current_change = TargetChange::CreateSynthesizedTargetChange(
+        current_sync_state == SyncState::Synced);
+  }
+
+  View view(query, query_result.remote_keys());
+  ViewDocumentChanges view_doc_changes =
+      view.ComputeDocumentChanges(query_result.documents());
+  ViewChange view_change =
+      view.ApplyChanges(view_doc_changes, synthesized_current_change);
+  UpdateTrackedLimboDocuments(view_change.limbo_changes(), target_id);
+
+  auto query_view =
+      std::make_shared<QueryView>(query, target_id, std::move(view));
+  query_views_by_query_[query] = query_view;
+
+  queries_by_target_[target_id].push_back(query);
+
+  HARD_ASSERT(
+      view_change.snapshot().has_value(),
+      "ApplyChanges to documents for new view should always return a snapshot");
+  return view_change.snapshot().value();
+}
+
+void SyncEngine::StopListening(const Query& query) {
+  AssertCallbackExists("StopListening");
+
+  auto query_view = query_views_by_query_[query];
+  HARD_ASSERT(query_view, "Trying to stop listening to a query not found");
+
+  query_views_by_query_.erase(query);
+
+  TargetId target_id = query_view->target_id();
+  auto& queries = queries_by_target_[target_id];
+  queries.erase(std::remove(queries.begin(), queries.end(), query),
+                queries.end());
+
+  if (queries.empty()) {
+    local_store_->ReleaseTarget(target_id);
+    remote_store_->StopListening(target_id);
+    RemoveAndCleanupTarget(target_id, Status::OK());
+  }
+}
+
+void SyncEngine::RemoveAndCleanupTarget(TargetId target_id, Status status) {
+  for (const Query& query : queries_by_target_.at(target_id)) {
+    query_views_by_query_.erase(query);
+    if (!status.ok()) {
+      sync_engine_callback_->OnError(query, status);
+      if (ErrorIsInteresting(status)) {
+        LOG_WARN("Listen for query at %s failed: %s",
+                 query.path().CanonicalString(), status.error_message());
+      }
+    }
+  }
+  queries_by_target_.erase(target_id);
+
+  DocumentKeySet limbo_keys = limbo_document_refs_.ReferencedKeys(target_id);
+  limbo_document_refs_.RemoveReferences(target_id);
+  for (const DocumentKey& key : limbo_keys) {
+    if (!limbo_document_refs_.ContainsKey(key)) {
+      // We removed the last reference for this key.
+      RemoveLimboTarget(key);
+    }
+  }
+}
+
+void SyncEngine::WriteMutations(std::vector<model::Mutation>&& mutations,
+                                StatusCallback callback) {
+  AssertCallbackExists("WriteMutations");
+
+  LocalWriteResult result = local_store_->WriteLocally(std::move(mutations));
+  mutation_callbacks_[current_user_].insert(
+      std::make_pair(result.batch_id(), std::move(callback)));
+
+  EmitNewSnapshotsAndNotifyLocalStore(result.changes(), absl::nullopt);
+  remote_store_->FillWritePipeline();
+}
+
+void SyncEngine::RegisterPendingWritesCallback(StatusCallback callback) {
+  if (!remote_store_->CanUseNetwork()) {
+    LOG_DEBUG(
+        "The network is disabled. The task returned by "
+        "'waitForPendingWrites()' will not "
+        "complete until the network is enabled.");
+  }
+
+  int largest_pending_batch_id =
+      local_store_->GetHighestUnacknowledgedBatchId();
+
+  if (largest_pending_batch_id == kBatchIdUnknown) {
+    // Trigger the callback right away if there is no pending writes at the
+    // moment.
+    callback(Status::OK());
+    return;
+  }
+
+  pending_writes_callbacks_[largest_pending_batch_id].push_back(
+      std::move(callback));
+}
+
+void SyncEngine::Transaction(int retries,
+                             const std::shared_ptr<AsyncQueue>& worker_queue,
+                             TransactionUpdateCallback update_callback,
+                             TransactionResultCallback result_callback) {
+  worker_queue->VerifyIsCurrentQueue();
+  HARD_ASSERT(retries >= 0, "Got negative number of retries for transaction");
+
+  // Allocate a shared_ptr so that the TransactionRunner can outlive this frame.
+  auto runner = std::make_shared<TransactionRunner>(worker_queue, remote_store_,
+                                                    std::move(update_callback),
+                                                    std::move(result_callback));
+  runner->Run();
+}
+
+void SyncEngine::HandleCredentialChange(const auth::User& user) {
+  bool user_changed = (current_user_ != user);
+  current_user_ = user;
+
+  if (user_changed) {
+    // Fails callbacks waiting for pending writes requested by previous user.
+    FailOutstandingPendingWriteCallbacks(
+        "'waitForPendingWrites' callback is cancelled due to a user change.");
+    // Notify local store and emit any resulting events from swapping out the
+    // mutation queue.
+    DocumentMap changes = local_store_->HandleUserChange(user);
+    EmitNewSnapshotsAndNotifyLocalStore(changes, absl::nullopt);
+  }
+
+  // Notify remote store so it can restart its streams.
+  remote_store_->HandleCredentialChange();
+}
+
+void SyncEngine::ApplyRemoteEvent(const RemoteEvent& remote_event) {
+  AssertCallbackExists("HandleRemoteEvent");
+
+  // Update received document as appropriate for any limbo targets.
+  for (const auto& entry : remote_event.target_changes()) {
+    TargetId target_id = entry.first;
+    const TargetChange& change = entry.second;
+    auto it = active_limbo_resolutions_by_target_.find(target_id);
+    if (it == active_limbo_resolutions_by_target_.end()) {
+      continue;
+    }
+
+    LimboResolution& limbo_resolution = it->second;
+    // Since this is a limbo resolution lookup, it's for a single document and
+    // it could be added, modified, or removed, but not a combination.
+    auto changed_documents_count = change.added_documents().size() +
+                                   change.modified_documents().size() +
+                                   change.removed_documents().size();
+    HARD_ASSERT(
+        changed_documents_count <= 1,
+        "Limbo resolution for single document contains multiple changes.");
+
+    if (!change.added_documents().empty()) {
+      limbo_resolution.document_received = true;
+    } else if (!change.modified_documents().empty()) {
+      HARD_ASSERT(limbo_resolution.document_received,
+                  "Received change for limbo target document without add.");
+    } else if (!change.removed_documents().empty()) {
+      HARD_ASSERT(limbo_resolution.document_received,
+                  "Received remove for limbo target document without add.");
+      limbo_resolution.document_received = false;
+    } else {
+      // This was probably just a CURRENT target change or similar.
+    }
+  }
+
+  DocumentMap changes = local_store_->ApplyRemoteEvent(remote_event);
+  EmitNewSnapshotsAndNotifyLocalStore(changes, remote_event);
+}
+
+void SyncEngine::HandleRejectedListen(TargetId target_id, Status error) {
+  AssertCallbackExists("HandleRejectedListen");
+
+  auto it = active_limbo_resolutions_by_target_.find(target_id);
+  if (it != active_limbo_resolutions_by_target_.end()) {
+    DocumentKey limbo_key = it->second.key;
+    // Since this query failed, we won't want to manually unlisten to it.
+    // So go ahead and remove it from bookkeeping.
+    active_limbo_targets_by_key_.erase(limbo_key);
+    active_limbo_resolutions_by_target_.erase(target_id);
+    PumpEnqueuedLimboResolutions();
+
+    // TODO(dimond): Retry on transient errors?
+
+    // It's a limbo doc. Create a synthetic event saying it was deleted. This is
+    // kind of a hack. Ideally, we would have a method in the local store to
+    // purge a document. However, it would be tricky to keep all of the local
+    // store's invariants with another method.
+    MutableDocument doc =
+        MutableDocument::NoDocument(limbo_key, SnapshotVersion::None());
+
+    // Explicitly instantiate these to work around a bug in the default
+    // constructor of the std::unordered_map that comes with GCC 4.8. Without
+    // this GCC emits a spurious "chosen constructor is explicit in
+    // copy-initialization" error.
+    DocumentKeySet limbo_documents{limbo_key};
+    RemoteEvent::TargetChangeMap target_changes;
+    RemoteEvent::TargetSet target_mismatches;
+    DocumentUpdateMap document_updates{{limbo_key, doc}};
+
+    RemoteEvent event{SnapshotVersion::None(), std::move(target_changes),
+                      std::move(target_mismatches), std::move(document_updates),
+                      std::move(limbo_documents)};
+    ApplyRemoteEvent(event);
+  } else {
+    local_store_->ReleaseTarget(target_id);
+    RemoveAndCleanupTarget(target_id, error);
+  }
+}
+
+void SyncEngine::HandleSuccessfulWrite(
+    model::MutationBatchResult batch_result) {
+  AssertCallbackExists("HandleSuccessfulWrite");
+
+  // The local store may or may not be able to apply the write result and
+  // raise events immediately (depending on whether the watcher is caught up),
+  // so we raise user callbacks first so that they consistently happen before
+  // listen events.
+  NotifyUser(batch_result.batch().batch_id(), Status::OK());
+
+  TriggerPendingWriteCallbacks(batch_result.batch().batch_id());
+
+  DocumentMap changes = local_store_->AcknowledgeBatch(batch_result);
+  EmitNewSnapshotsAndNotifyLocalStore(changes, absl::nullopt);
+}
+
+void SyncEngine::HandleRejectedWrite(
+    firebase::firestore::model::BatchId batch_id, Status error) {
+  AssertCallbackExists("HandleRejectedWrite");
+
+  DocumentMap changes = local_store_->RejectBatch(batch_id);
+
+  if (!changes.empty() && ErrorIsInteresting(error)) {
+    const DocumentKey& min_key = changes.min()->first;
+    LOG_WARN("Write at %s failed: %s", min_key.ToString(),
+             error.error_message());
+  }
+
+  // The local store may or may not be able to apply the write result and
+  // raise events immediately (depending on whether the watcher is caught up),
+  // so we raise user callbacks first so that they consistently happen before
+  // listen events.
+  NotifyUser(batch_id, std::move(error));
+
+  TriggerPendingWriteCallbacks(batch_id);
+
+  EmitNewSnapshotsAndNotifyLocalStore(changes, absl::nullopt);
+}
+
+void SyncEngine::HandleOnlineStateChange(model::OnlineState online_state) {
+  AssertCallbackExists("HandleOnlineStateChange");
+
+  std::vector<ViewSnapshot> new_view_snapshot;
+  for (const auto& entry : query_views_by_query_) {
+    const auto& query_view = entry.second;
+    ViewChange view_change =
+        query_view->view().ApplyOnlineStateChange(online_state);
+    HARD_ASSERT(view_change.limbo_changes().empty(),
+                "OnlineState should not affect limbo documents.");
+    if (view_change.snapshot().has_value()) {
+      new_view_snapshot.push_back(*std::move(view_change).snapshot());
+    }
+  }
+
+  sync_engine_callback_->OnViewSnapshots(std::move(new_view_snapshot));
+  sync_engine_callback_->HandleOnlineStateChange(online_state);
+}
+
+DocumentKeySet SyncEngine::GetRemoteKeys(TargetId target_id) const {
+  auto it = active_limbo_resolutions_by_target_.find(target_id);
+  if (it != active_limbo_resolutions_by_target_.end() &&
+      it->second.document_received) {
+    return DocumentKeySet{it->second.key};
+  } else {
+    DocumentKeySet keys;
+    if (queries_by_target_.count(target_id) == 0) {
+      return keys;
+    }
+
+    for (const auto& query : queries_by_target_.at(target_id)) {
+      keys = keys.union_with(
+          query_views_by_query_.at(query)->view().synced_documents());
+    }
+    return keys;
+  }
+}
+
+void SyncEngine::NotifyUser(BatchId batch_id, Status status) {
+  auto it = mutation_callbacks_.find(current_user_);
+
+  // NOTE: Mutations restored from persistence won't have callbacks, so
+  // it's okay for this (or the callback below) to not exist.
+  if (it == mutation_callbacks_.end()) {
+    return;
+  }
+
+  std::unordered_map<BatchId, StatusCallback>& callbacks = it->second;
+  auto callback_it = callbacks.find(batch_id);
+  if (callback_it != callbacks.end()) {
+    callback_it->second(std::move(status));
+    callbacks.erase(callback_it);
+  }
+}
+
+void SyncEngine::TriggerPendingWriteCallbacks(BatchId batch_id) {
+  auto it = pending_writes_callbacks_.find(batch_id);
+  if (it != pending_writes_callbacks_.end()) {
+    for (const auto& callback : it->second) {
+      callback(Status::OK());
+    }
+
+    pending_writes_callbacks_.erase(it);
+  }
+}
+
+void SyncEngine::FailOutstandingPendingWriteCallbacks(
+    const std::string& message) {
+  for (const auto& entry : pending_writes_callbacks_) {
+    for (const auto& callback : entry.second) {
+      callback(Status(Error::kErrorCancelled, message));
+    }
+  }
+
+  pending_writes_callbacks_.clear();
+}
+
+void SyncEngine::EmitNewSnapshotsAndNotifyLocalStore(
+    const DocumentMap& changes,
+    const absl::optional<RemoteEvent>& maybe_remote_event) {
+  std::vector<ViewSnapshot> new_snapshots;
+  std::vector<LocalViewChanges> document_changes_in_all_views;
+
+  for (const auto& entry : query_views_by_query_) {
+    const auto& query_view = entry.second;
+    View& view = query_view->view();
+    ViewDocumentChanges view_doc_changes = view.ComputeDocumentChanges(changes);
+    if (view_doc_changes.needs_refill()) {
+      // The query has a limit and some docs were removed/updated, so we need to
+      // re-run the query against the local store to make sure we didn't lose
+      // any good docs that had been past the limit.
+      QueryResult query_result = local_store_->ExecuteQuery(
+          query_view->query(), /* use_previous_results= */ false);
+      view_doc_changes = view.ComputeDocumentChanges(query_result.documents(),
+                                                     view_doc_changes);
+    }
+
+    absl::optional<TargetChange> target_changes;
+    if (maybe_remote_event.has_value()) {
+      const RemoteEvent& remote_event = maybe_remote_event.value();
+      auto it = remote_event.target_changes().find(query_view->target_id());
+      if (it != remote_event.target_changes().end()) {
+        target_changes = it->second;
+      }
+    }
+    ViewChange view_change =
+        view.ApplyChanges(view_doc_changes, target_changes);
+
+    UpdateTrackedLimboDocuments(view_change.limbo_changes(),
+                                query_view->target_id());
+
+    if (view_change.snapshot().has_value()) {
+      new_snapshots.push_back(*view_change.snapshot());
+      LocalViewChanges doc_changes = LocalViewChanges::FromViewSnapshot(
+          *view_change.snapshot(), query_view->target_id());
+      document_changes_in_all_views.push_back(std::move(doc_changes));
+    }
+  }
+
+  sync_engine_callback_->OnViewSnapshots(std::move(new_snapshots));
+  local_store_->NotifyLocalViewChanges(document_changes_in_all_views);
+}
+
+void SyncEngine::UpdateTrackedLimboDocuments(
+    const std::vector<LimboDocumentChange>& limbo_changes, TargetId target_id) {
+  for (const LimboDocumentChange& limbo_change : limbo_changes) {
+    switch (limbo_change.type()) {
+      case LimboDocumentChange::Type::Added:
+        limbo_document_refs_.AddReference(limbo_change.key(), target_id);
+        TrackLimboChange(limbo_change);
+        break;
+
+      case LimboDocumentChange::Type::Removed:
+        LOG_DEBUG("Document no longer in limbo: %s",
+                  limbo_change.key().ToString());
+        limbo_document_refs_.RemoveReference(limbo_change.key(), target_id);
+        if (!limbo_document_refs_.ContainsKey(limbo_change.key())) {
+          // We removed the last reference for this key
+          RemoveLimboTarget(limbo_change.key());
+        }
+        break;
+
+      default:
+        HARD_FAIL("Unknown limbo change type: %s", limbo_change.type());
+    }
+  }
+}
+
+void SyncEngine::TrackLimboChange(const LimboDocumentChange& limbo_change) {
+  const DocumentKey& key = limbo_change.key();
+  if (active_limbo_targets_by_key_.find(key) ==
+          active_limbo_targets_by_key_.end() &&
+      enqueued_limbo_resolutions_.push_back(key)) {
+    LOG_DEBUG("New document in limbo: %s", key.ToString());
+    PumpEnqueuedLimboResolutions();
+  }
+}
+
+void SyncEngine::PumpEnqueuedLimboResolutions() {
+  while (!enqueued_limbo_resolutions_.empty() &&
+         active_limbo_targets_by_key_.size() <
+             max_concurrent_limbo_resolutions_) {
+    DocumentKey key = enqueued_limbo_resolutions_.front();
+    enqueued_limbo_resolutions_.pop_front();
+    TargetId limbo_target_id = target_id_generator_.NextId();
+    active_limbo_resolutions_by_target_.emplace(limbo_target_id,
+                                                LimboResolution{key});
+    active_limbo_targets_by_key_.emplace(key, limbo_target_id);
+    remote_store_->Listen(TargetData(Query(key.path()).ToTarget(),
+                                     limbo_target_id, kIrrelevantSequenceNumber,
+                                     QueryPurpose::LimboResolution));
+  }
+}
+
+void SyncEngine::RemoveLimboTarget(const DocumentKey& key) {
+  enqueued_limbo_resolutions_.remove(key);
+  auto it = active_limbo_targets_by_key_.find(key);
+  if (it == active_limbo_targets_by_key_.end()) {
+    // This target already got removed, because the query failed.
+    return;
+  }
+
+  TargetId limbo_target_id = it->second;
+  remote_store_->StopListening(limbo_target_id);
+  active_limbo_targets_by_key_.erase(key);
+  active_limbo_resolutions_by_target_.erase(limbo_target_id);
+  PumpEnqueuedLimboResolutions();
+}
+
+absl::optional<BundleLoader> SyncEngine::ReadIntoLoader(
+    const bundle::BundleMetadata& metadata,
+    bundle::BundleReader& reader,
+    api::LoadBundleTask& result_task) {
+  BundleLoader loader(local_store_, metadata);
+  int64_t current_bytes_read = 0;
+  // Breaks when either error happened, or when there is no more element to
+  // read.
+  while (true) {
+    auto element = reader.GetNextElement();
+    if (!reader.reader_status().ok()) {
+      LOG_WARN("Failed to GetNextElement() from bundle with error %s",
+               reader.reader_status().error_message());
+      result_task.SetError(reader.reader_status());
+      return absl::nullopt;
+    }
+
+    // No more elements from reader.
+    if (element == nullptr) {
+      break;
+    }
+
+    int64_t old_bytes_read = current_bytes_read;
+    current_bytes_read = reader.bytes_read();
+    auto maybe_progress = loader.AddElement(
+        std::move(element), current_bytes_read - old_bytes_read);
+    if (!maybe_progress.ok()) {
+      LOG_WARN("Failed to AddElement() to bundle loader with error %s",
+               maybe_progress.status().error_message());
+      result_task.SetError(maybe_progress.status());
+      return absl::nullopt;
+    }
+
+    if (maybe_progress.ValueOrDie().has_value()) {
+      result_task.UpdateProgress(maybe_progress.ConsumeValueOrDie().value());
+    }
+  }
+
+  return loader;
+}
+
+void SyncEngine::LoadBundle(std::shared_ptr<bundle::BundleReader> reader,
+                            std::shared_ptr<api::LoadBundleTask> result_task) {
+  auto bundle_metadata = reader->GetBundleMetadata();
+  if (!reader->reader_status().ok()) {
+    LOG_WARN("Failed to GetBundleMetadata() for bundle with error %s",
+             reader->reader_status().error_message());
+    result_task->SetError(reader->reader_status());
+    return;
+  }
+
+  bool has_newer_bundle = local_store_->HasNewerBundle(bundle_metadata);
+  if (has_newer_bundle) {
+    result_task->SetSuccess(SuccessProgress(bundle_metadata));
+    return;
+  }
+
+  result_task->UpdateProgress(InitialProgress(bundle_metadata));
+  auto maybe_loader = ReadIntoLoader(bundle_metadata, *reader, *result_task);
+  if (!maybe_loader.has_value()) {
+    // `ReadIntoLoader` would call `result_task.SetError` should there be an
+    // error, so we do not need set it here.
+    return;
+  }
+
+  util::StatusOr<DocumentMap> changes = maybe_loader.value().ApplyChanges();
+  if (!changes.ok()) {
+    LOG_WARN("Failed to ApplyChanges() for bundle elements with error %s",
+             changes.status().error_message());
+    result_task->SetError(changes.status());
+    return;
+  }
+
+  EmitNewSnapshotsAndNotifyLocalStore(changes.ConsumeValueOrDie(),
+                                      absl::nullopt);
+
+  result_task->SetSuccess(SuccessProgress(bundle_metadata));
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.h
new file mode 100644
index 0000000..bb76730
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine.h	
@@ -0,0 +1,338 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_H_
+#define FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_H_
+
+#include <cstddef>
+#include <deque>
+#include <map>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/api/load_bundle_task.h"
+#include "Firestore/core/src/bundle/bundle_loader.h"
+#include "Firestore/core/src/bundle/bundle_reader.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/target_id_generator.h"
+#include "Firestore/core/src/core/view.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/remote/remote_store.h"
+#include "Firestore/core/src/util/random_access_queue.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class LocalStore;
+class TargetData;
+}  // namespace local
+
+namespace core {
+
+class SyncEngineCallback;
+class ViewSnapshot;
+
+/**
+ * Interface implemented by `SyncEngine` to receive requests from
+ * `EventManager`.
+ // PORTING NOTE: This is extracted as an interface to allow gmock to mock
+ // sync engine.
+ */
+class QueryEventSource {
+ public:
+  virtual ~QueryEventSource() = default;
+
+  virtual void SetCallback(SyncEngineCallback* callback) = 0;
+
+  /**
+   * Initiates a new listen. The LocalStore will be queried for initial data
+   * and the listen will be sent to the `RemoteStore` to get remote data. The
+   * registered SyncEngineCallback will be notified of resulting view
+   * snapshots and/or listen errors.
+   *
+   * @return the target ID assigned to the query.
+   */
+  virtual model::TargetId Listen(Query query) = 0;
+
+  /** Stops listening to a query previously listened to via `Listen`. */
+  virtual void StopListening(const Query& query) = 0;
+};
+
+/**
+ * SyncEngine is the central controller in the client SDK architecture. It is
+ * the glue code between the EventManager, LocalStore, and RemoteStore. Some of
+ * SyncEngine's responsibilities include:
+ * 1. Coordinating client requests and remote events between the EventManager
+ * and the local and remote data stores.
+ * 2. Managing a View object for each query, providing the unified view between
+ * the local and remote data stores.
+ * 3. Notifying the RemoteStore when the LocalStore has new mutations in its
+ * queue that need sending to the backend.
+ *
+ * The SyncEngine’s methods should only ever be called by methods running on our
+ * own worker queue.
+ */
+class SyncEngine : public remote::RemoteStoreCallback, public QueryEventSource {
+ public:
+  SyncEngine(local::LocalStore* local_store,
+             remote::RemoteStore* remote_store,
+             const auth::User& initial_user,
+             size_t max_concurrent_limbo_resolutions);
+
+  // Implements `QueryEventSource`.
+  void SetCallback(SyncEngineCallback* callback) override {
+    sync_engine_callback_ = callback;
+  }
+  model::TargetId Listen(Query query) override;
+  void StopListening(const Query& query) override;
+
+  /**
+   * Initiates the write of local mutation batch which involves adding the
+   * writes to the mutation queue, notifying the remote store about new
+   * mutations, and raising events for any changes this write caused. The
+   * provided callback will be called once the write has been acked or
+   * rejected by the backend (or failed locally for any other reason).
+   */
+  void WriteMutations(std::vector<model::Mutation>&& mutations,
+                      util::StatusCallback callback);
+
+  /**
+   * Registers a user callback that is called when all pending mutations at the
+   * moment of calling are acknowledged .
+   */
+  void RegisterPendingWritesCallback(util::StatusCallback callback);
+
+  /**
+   * Runs the given transaction block up to retries times and then calls
+   * completion.
+   *
+   * @param retries The number of times to try before giving up.
+   * @param worker_queue The queue to dispatch sync engine calls to.
+   * @param update_callback The callback to call to execute the user's
+   * transaction.
+   * @param result_callback The callback to call when the transaction is
+   * finished or failed.
+   */
+  void Transaction(int retries,
+                   const std::shared_ptr<util::AsyncQueue>& worker_queue,
+                   core::TransactionUpdateCallback update_callback,
+                   core::TransactionResultCallback result_callback);
+
+  void HandleCredentialChange(const auth::User& user);
+
+  // Implements `RemoteStoreCallback`
+  void ApplyRemoteEvent(const remote::RemoteEvent& remote_event) override;
+  void HandleRejectedListen(model::TargetId target_id,
+                            util::Status error) override;
+  void HandleSuccessfulWrite(model::MutationBatchResult batch_result) override;
+  void HandleRejectedWrite(model::BatchId batch_id,
+                           util::Status error) override;
+  void HandleOnlineStateChange(model::OnlineState online_state) override;
+  model::DocumentKeySet GetRemoteKeys(model::TargetId target_id) const override;
+
+  void LoadBundle(std::shared_ptr<bundle::BundleReader> reader,
+                  std::shared_ptr<api::LoadBundleTask> result_task);
+
+  // For tests only
+  std::map<model::DocumentKey, model::TargetId>
+  GetActiveLimboDocumentResolutions() const {
+    // Return defensive copy
+    return active_limbo_targets_by_key_;
+  }
+
+  // For tests only
+  std::vector<model::DocumentKey> GetEnqueuedLimboDocumentResolutions() const {
+    return enqueued_limbo_resolutions_.elements();
+  }
+
+ private:
+  /**
+   * QueryView contains all of the info that SyncEngine needs to track for a
+   * particular query and view.
+   */
+  class QueryView {
+   public:
+    QueryView(Query query, model::TargetId target_id, View view)
+        : query_(std::move(query)),
+          target_id_(target_id),
+          view_(std::move(view)) {
+    }
+
+    const Query& query() const {
+      return query_;
+    }
+
+    /**
+     * The target ID created by the client that is used in the watch stream to
+     * identify this query.
+     */
+    model::TargetId target_id() const {
+      return target_id_;
+    }
+
+    /**
+     * The view is responsible for computing the final merged truth of what docs
+     * are in the query. It gets notified of local and remote changes, and
+     * applies the query filters and limits to determine the most correct
+     * possible results.
+     */
+    View& view() {
+      return view_;
+    }
+
+   private:
+    Query query_;
+    model::TargetId target_id_;
+    View view_;
+  };
+
+  /** Tracks a limbo resolution. */
+  class LimboResolution {
+   public:
+    LimboResolution() = default;
+
+    explicit LimboResolution(const model::DocumentKey& key) : key{key} {
+    }
+
+    model::DocumentKey key;
+
+    /**
+     * Set to true once we've received a document. This is used in
+     * RemoteKeysForTarget and ultimately used by `WatchChangeAggregator` to
+     * decide whether it needs to manufacture a delete event for the target once
+     * the target is CURRENT.
+     */
+    bool document_received = false;
+  };
+
+  void AssertCallbackExists(absl::string_view source);
+
+  ViewSnapshot InitializeViewAndComputeSnapshot(const Query& query,
+                                                model::TargetId target_id);
+
+  void RemoveAndCleanupTarget(model::TargetId target_id, util::Status status);
+
+  void RemoveLimboTarget(const model::DocumentKey& key);
+
+  void EmitNewSnapshotsAndNotifyLocalStore(
+      const model::DocumentMap& changes,
+      const absl::optional<remote::RemoteEvent>& maybe_remote_event);
+
+  /** Updates the limbo document state for the given target_id. */
+  void UpdateTrackedLimboDocuments(
+      const std::vector<LimboDocumentChange>& limbo_changes,
+      model::TargetId target_id);
+
+  void TrackLimboChange(const LimboDocumentChange& limbo_change);
+
+  /**
+   * Starts listens for documents in limbo that are enqueued for resolution,
+   * subject to a maximum number of concurrent resolutions.
+   *
+   * The maximum number of concurrent limbo resolutions is defined in
+   * max_concurrent_limbo_resolutions_.
+   *
+   * Without bounding the number of concurrent resolutions, the server can fail
+   * with "resource exhausted" errors which can lead to pathological client
+   * behavior as seen in https://github.com/firebase/firebase-js-sdk/issues/2683
+   */
+  void PumpEnqueuedLimboResolutions();
+
+  void NotifyUser(model::BatchId batch_id, util::Status status);
+
+  /**
+   * Triggers callbacks waiting for this batch id to get acknowledged by
+   * server, if there are any.
+   */
+  void TriggerPendingWriteCallbacks(model::BatchId batch_id);
+  void FailOutstandingPendingWriteCallbacks(const std::string& message);
+
+  absl::optional<bundle::BundleLoader> ReadIntoLoader(
+      const bundle::BundleMetadata& metadata,
+      bundle::BundleReader& reader,
+      api::LoadBundleTask& result_task);
+
+  /** The local store, used to persist mutations and cached documents. */
+  local::LocalStore* local_store_ = nullptr;
+
+  /** The remote store for sending writes, watches, etc. to the backend. */
+  remote::RemoteStore* remote_store_ = nullptr;
+
+  auth::User current_user_;
+  SyncEngineCallback* sync_engine_callback_ = nullptr;
+
+  /**
+   * Used for creating the TargetId for the listens used to resolve limbo
+   * documents.
+   */
+  TargetIdGenerator target_id_generator_;
+
+  /** Stores user completion blocks, indexed by User and BatchId. */
+  std::unordered_map<auth::User,
+                     std::unordered_map<model::BatchId, util::StatusCallback>,
+                     auth::HashUser>
+      mutation_callbacks_;
+
+  /** Stores user callbacks waiting for pending writes to be acknowledged. */
+  std::unordered_map<model::BatchId, std::vector<util::StatusCallback>>
+      pending_writes_callbacks_;
+
+  // Shared pointers are used to avoid creating and storing two copies of the
+  // same `QueryView` and for consistency with other platforms.
+  /** QueryViews for all active queries, indexed by query. */
+  std::unordered_map<Query, std::shared_ptr<QueryView>> query_views_by_query_;
+
+  /** Queries mapped to Targets, indexed by target ID. */
+  std::unordered_map<model::TargetId, std::vector<Query>> queries_by_target_;
+
+  const size_t max_concurrent_limbo_resolutions_;
+
+  /**
+   * The keys of documents that are in limbo for which we haven't yet started a
+   * limbo resolution query.
+   */
+  util::RandomAccessQueue<model::DocumentKey, model::DocumentKeyHash>
+      enqueued_limbo_resolutions_;
+
+  /**
+   * Keeps track of the target ID for each document that is in limbo with an
+   * active target.
+   */
+  std::map<model::DocumentKey, model::TargetId> active_limbo_targets_by_key_;
+
+  /**
+   * Keeps track of the information about an active limbo resolution for each
+   * active target ID that was started for the purpose of limbo resolution.
+   */
+  std::map<model::TargetId, LimboResolution>
+      active_limbo_resolutions_by_target_;
+
+  /** Used to track any documents that are currently in limbo. */
+  local::ReferenceSet limbo_document_refs_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine_callback.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine_callback.h
new file mode 100644
index 0000000..64b2ba7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/sync_engine_callback.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_CALLBACK_H_
+#define FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_CALLBACK_H_
+
+#include <vector>
+
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * Interface implemented by `EventManager` to handle notifications from
+ * `SyncEngine`.
+ */
+class SyncEngineCallback {
+ public:
+  virtual ~SyncEngineCallback() = default;
+
+  /** Handles a change in online state. */
+  virtual void HandleOnlineStateChange(model::OnlineState online_state) = 0;
+  /** Handles new view snapshots. */
+  virtual void OnViewSnapshots(std::vector<core::ViewSnapshot>&& snapshots) = 0;
+  /** Handles the failure of a query. */
+  virtual void OnError(const core::Query& query, const util::Status& error) = 0;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_SYNC_ENGINE_CALLBACK_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.cc
new file mode 100644
index 0000000..7fa3dfa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.cc	
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/target.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/core/operator.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/equality.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::DocumentKey;
+
+// MARK: - Accessors
+
+bool Target::IsDocumentQuery() const {
+  return DocumentKey::IsDocumentKey(path_) && !collection_group_ &&
+         filters_.empty();
+}
+
+const std::string& Target::CanonicalId() const {
+  if (!canonical_id_.empty()) return canonical_id_;
+
+  std::string result;
+  absl::StrAppend(&result, path_.CanonicalString());
+
+  if (collection_group_) {
+    absl::StrAppend(&result, "|cg:", *collection_group_);
+  }
+
+  // Add filters.
+  absl::StrAppend(&result, "|f:");
+  for (const auto& filter : filters_) {
+    absl::StrAppend(&result, filter.CanonicalId());
+  }
+
+  // Add order by.
+  absl::StrAppend(&result, "|ob:");
+  for (const OrderBy& order_by : order_bys()) {
+    absl::StrAppend(&result, order_by.CanonicalId());
+  }
+
+  // Add limit.
+  if (limit_ != kNoLimit) {
+    absl::StrAppend(&result, "|l:", limit_);
+  }
+
+  if (start_at_) {
+    absl::StrAppend(&result, "|lb:", start_at_->CanonicalId());
+  }
+
+  if (end_at_) {
+    absl::StrAppend(&result, "|ub:", end_at_->CanonicalId());
+  }
+
+  canonical_id_ = std::move(result);
+  return canonical_id_;
+}
+
+size_t Target::Hash() const {
+  return util::Hash(CanonicalId());
+}
+
+std::string Target::ToString() const {
+  return absl::StrCat("Target(canonical_id=", CanonicalId(), ")");
+}
+
+std::ostream& operator<<(std::ostream& os, const Target& target) {
+  return os << target.ToString();
+}
+
+bool operator==(const Target& lhs, const Target& rhs) {
+  return lhs.path() == rhs.path() &&
+         util::Equals(lhs.collection_group(), rhs.collection_group()) &&
+         lhs.filters() == rhs.filters() && lhs.order_bys() == rhs.order_bys() &&
+         lhs.limit() == rhs.limit() && lhs.start_at() == rhs.start_at() &&
+         lhs.end_at() == rhs.end_at();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.h
new file mode 100644
index 0000000..fc8154a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target.h	
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_TARGET_H_
+#define FIRESTORE_CORE_SRC_CORE_TARGET_H_
+
+#include <iosfwd>
+#include <limits>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/core/order_by.h"
+#include "Firestore/core/src/immutable/append_only_list.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/remote/serializer.h"
+
+namespace firebase {
+namespace firestore {
+namespace bundle {
+class BundleSerializer;
+}
+namespace core {
+
+using CollectionGroupId = std::shared_ptr<const std::string>;
+
+/**
+ * A Target represents the WatchTarget representation of a Query, which is
+ * used by the LocalStore and the RemoteStore to keep track of and to execute
+ * backend queries. While multiple Queries can map to the same Target, each
+ * Target maps to a single WatchTarget in RemoteStore and a single TargetData
+ * entry in persistence.
+ */
+class Target {
+ public:
+  static constexpr int32_t kNoLimit = std::numeric_limits<int32_t>::max();
+
+  Target() = default;
+
+  // MARK: - Accessors
+
+  /** The base path of the target. */
+  const model::ResourcePath& path() const {
+    return path_;
+  }
+
+  /** The collection group of the target, if any. */
+  const std::shared_ptr<const std::string>& collection_group() const {
+    return collection_group_;
+  }
+
+  /** Returns true if this Target is for a specific document. */
+  bool IsDocumentQuery() const;
+
+  /** The filters on the documents returned by the target. */
+  const FilterList& filters() const {
+    return filters_;
+  }
+
+  /** Returns the list of ordering constraints by the target. */
+  const OrderByList& order_bys() const {
+    return order_bys_;
+  }
+
+  int32_t limit() const {
+    return limit_;
+  }
+
+  const absl::optional<Bound>& start_at() const {
+    return start_at_;
+  }
+
+  const absl::optional<Bound>& end_at() const {
+    return end_at_;
+  }
+
+  const std::string& CanonicalId() const;
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os, const Target& target);
+
+  size_t Hash() const;
+
+ private:
+  /**
+   * Initializes a Target with a path and additional query constraints.
+   * Path must currently be empty if this is a collection group query.
+   *
+   * NOTE: This is made private and only accessible by `Query` and `Serializer`.
+   * You should always construct Target from `Query.toTarget` because Query
+   * provides an implicit `orderBy` property.
+   */
+  Target(model::ResourcePath path,
+         CollectionGroupId collection_group,
+         FilterList filters,
+         OrderByList order_bys,
+         int32_t limit,
+         absl::optional<Bound> start_at,
+         absl::optional<Bound> end_at)
+      : path_(std::move(path)),
+        collection_group_(std::move(collection_group)),
+        filters_(std::move(filters)),
+        order_bys_(std::move(order_bys)),
+        limit_(limit),
+        start_at_(std::move(start_at)),
+        end_at_(std::move(end_at)) {
+  }
+  friend class Query;
+  friend class remote::Serializer;
+  friend class bundle::BundleSerializer;
+
+  model::ResourcePath path_;
+  std::shared_ptr<const std::string> collection_group_;
+  FilterList filters_;
+  OrderByList order_bys_;
+  int32_t limit_ = kNoLimit;
+  absl::optional<Bound> start_at_;
+  absl::optional<Bound> end_at_;
+
+  mutable std::string canonical_id_;
+};
+
+bool operator==(const Target& lhs, const Target& rhs);
+
+inline bool operator!=(const Target& lhs, const Target& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+namespace std {
+
+template <>
+struct hash<firebase::firestore::core::Target> {
+  size_t operator()(const firebase::firestore::core::Target& target) const {
+    return target.Hash();
+  }
+};
+
+}  // namespace std
+
+#endif  // FIRESTORE_CORE_SRC_CORE_TARGET_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.cc
new file mode 100644
index 0000000..08ee7f5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.cc	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/target_id_generator.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+using firebase::firestore::model::TargetId;
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+TargetIdGenerator::TargetIdGenerator(TargetIdGeneratorId generator_id,
+                                     TargetId seed)
+    : generator_id_(generator_id) {
+  seek(seed);
+}
+
+void TargetIdGenerator::seek(TargetId target_id) {
+  const TargetId generator = static_cast<TargetId>(generator_id_);
+  HARD_ASSERT((target_id & generator) == generator,
+              "Cannot supply target ID from different generator ID");
+  next_id_ = target_id;
+}
+
+TargetId TargetIdGenerator::NextId() {
+  int next_id = next_id_;
+  next_id_ += 1 << kReservedBits;
+  return next_id;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.h
new file mode 100644
index 0000000..7dbef89
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/target_id_generator.h	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_TARGET_ID_GENERATOR_H_
+#define FIRESTORE_CORE_SRC_CORE_TARGET_ID_GENERATOR_H_
+
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/** The set of all valid generators. */
+enum class TargetIdGeneratorId { TargetCache = 0, SyncEngine = 1 };
+
+/**
+ * Generates monotonically increasing target IDs for sending targets to the
+ * watch stream.
+ *
+ * The client constructs two generators, one for the query cache (via
+ * `QueryCacheTargetIdGenerator(int after)`), and one for limbo documents (via
+ * `SyncEngineTargetIdGenerator()`). These two generators produce
+ * non-overlapping IDs (by using even and odd IDs respectively).
+ *
+ * By separating the target ID space, the query cache can generate target IDs
+ * that persist across client restarts, while sync engine can independently
+ * generate in-memory target IDs that are transient and can be reused after a
+ * restart.
+ *
+ * Not thread-safe.
+ */
+// TODO(mrschmidt): Explore removing this class in favor of generating these IDs
+// directly in SyncEngine and LocalStore.
+class TargetIdGenerator {
+ public:
+  TargetIdGenerator() = default;
+
+  /**
+   * Creates and returns the TargetIdGenerator for the local store.
+   *
+   * @param after An ID to start at. Every call to NextId returns a larger id.
+   * @return An instance of TargetIdGenerator.
+   */
+  static TargetIdGenerator TargetCacheTargetIdGenerator(model::TargetId after) {
+    TargetIdGenerator generator(TargetIdGeneratorId::TargetCache, after);
+    // Make sure that the next call to `NextId()` returns the first value after
+    // 'after'.
+    generator.NextId();
+    return generator;
+  }
+
+  /**
+   * Creates and returns the TargetIdGenerator for the sync engine.
+   *
+   * @return An instance of TargetIdGenerator.
+   */
+  static TargetIdGenerator SyncEngineTargetIdGenerator() {
+    // Sync engine assigns target IDs for limbo document detection.
+    return TargetIdGenerator(TargetIdGeneratorId::SyncEngine, 1);
+  }
+
+  TargetIdGeneratorId generator_id() {
+    return generator_id_;
+  }
+
+  model::TargetId NextId();
+
+ private:
+  TargetIdGenerator(TargetIdGeneratorId generator_id, model::TargetId seed);
+  void seek(model::TargetId target_id);
+
+  TargetIdGeneratorId generator_id_ = TargetIdGeneratorId::TargetCache;
+  model::TargetId next_id_ = 0;
+
+  static const int kReservedBits = 1;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_TARGET_ID_GENERATOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.cc
new file mode 100644
index 0000000..b18eff2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.cc	
@@ -0,0 +1,237 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/transaction.h"
+
+#include <algorithm>
+#include <unordered_set>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/core/user_data.h"
+#include "Firestore/core/src/model/delete_mutation.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/verify_mutation.h"
+#include "Firestore/core/src/remote/datastore.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+using firebase::firestore::Error;
+using firebase::firestore::core::ParsedSetData;
+using firebase::firestore::core::ParsedUpdateData;
+using firebase::firestore::model::DeleteMutation;
+using firebase::firestore::model::Document;
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::DocumentKeyHash;
+using firebase::firestore::model::Mutation;
+using firebase::firestore::model::Precondition;
+using firebase::firestore::model::SnapshotVersion;
+using firebase::firestore::model::VerifyMutation;
+using firebase::firestore::remote::Datastore;
+using firebase::firestore::util::Status;
+using firebase::firestore::util::StatusOr;
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+Transaction::Transaction(Datastore* datastore)
+    : datastore_{NOT_NULL(datastore)} {
+}
+
+Status Transaction::RecordVersion(const Document& doc) {
+  SnapshotVersion doc_version;
+
+  if (doc->is_found_document()) {
+    doc_version = doc->version();
+  } else if (doc->is_no_document()) {
+    // For deleted docs, we must record an explicit no version to build the
+    // right precondition when writing.
+    doc_version = SnapshotVersion::None();
+  } else {
+    HARD_FAIL("Unexpected document type in transaction: %s", doc.ToString());
+  }
+
+  absl::optional<SnapshotVersion> existing_version = GetVersion(doc->key());
+  if (existing_version.has_value()) {
+    if (doc_version != existing_version.value()) {
+      // This transaction will fail no matter what.
+      return Status{Error::kErrorAborted,
+                    "Document version changed between two reads."};
+    }
+    return Status::OK();
+  } else {
+    read_versions_[doc->key()] = doc_version;
+    return Status::OK();
+  }
+}
+
+void Transaction::Lookup(const std::vector<DocumentKey>& keys,
+                         LookupCallback&& callback) {
+  EnsureCommitNotCalled();
+
+  if (!mutations_.empty()) {
+    Status lookup_error = Status{Error::kErrorInvalidArgument,
+                                 "Firestore transactions require all reads to "
+                                 "be executed before all writes"};
+    callback(lookup_error);
+    return;
+  }
+
+  datastore_->LookupDocuments(
+      keys,
+      [this, callback](const StatusOr<std::vector<Document>>& maybe_documents) {
+        if (!maybe_documents.ok()) {
+          callback(maybe_documents.status());
+          return;
+        }
+
+        const auto& documents = maybe_documents.ValueOrDie();
+        for (const Document& doc : documents) {
+          Status record_error = RecordVersion(doc);
+          if (!record_error.ok()) {
+            callback(record_error);
+            return;
+          }
+        }
+
+        // TODO(varconst): see if `maybe_documents` can be moved into the
+        // callback.
+        callback(maybe_documents);
+      });
+}
+
+void Transaction::WriteMutations(std::vector<Mutation>&& mutations) {
+  EnsureCommitNotCalled();
+  // `move` will become appropriate once `Mutation` is replaced by the C++
+  // equivalent.
+  std::move(mutations.begin(), mutations.end(), std::back_inserter(mutations_));
+}
+
+Precondition Transaction::CreatePrecondition(const DocumentKey& key) {
+  absl::optional<SnapshotVersion> version = GetVersion(key);
+  if (written_docs_.count(key) == 0 && version.has_value()) {
+    return Precondition::UpdateTime(version.value());
+  } else {
+    return Precondition::None();
+  }
+}
+
+StatusOr<Precondition> Transaction::CreateUpdatePrecondition(
+    const DocumentKey& key) {
+  absl::optional<SnapshotVersion> version = GetVersion(key);
+  // The first time a document is written, we want to take into account the
+  // read time and existence.
+  if (written_docs_.count(key) == 0 && version.has_value()) {
+    if (version.value() == SnapshotVersion::None()) {
+      // The document doesn't exist, so fail the transaction.
+      //
+      // This has to be validated locally because you can't send a
+      // precondition that a document does not exist without changing the
+      // semantics of the backend write to be an insert. This is the reverse
+      // of what we want, since we want to assert that the document doesn't
+      // exist but then send the update and have it fail. Since we can't
+      // express that to the backend, we have to validate locally.
+      //
+      // Note: this can change once we can send separate verify writes in the
+      // transaction.
+      return Status{Error::kErrorInvalidArgument,
+                    "Can't update a document that doesn't exist."};
+    }
+    // Document exists, just base precondition on document update time.
+    return Precondition::UpdateTime(version.value());
+  } else {
+    // Document was not read, so we just use the preconditions for a blind
+    // update.
+    return Precondition::Exists(true);
+  }
+}
+
+void Transaction::Set(const DocumentKey& key, ParsedSetData&& data) {
+  WriteMutations({std::move(data).ToMutation(key, CreatePrecondition(key))});
+  written_docs_.insert(key);
+}
+
+void Transaction::Update(const DocumentKey& key, ParsedUpdateData&& data) {
+  StatusOr<Precondition> maybe_precondition = CreateUpdatePrecondition(key);
+  if (!maybe_precondition.ok()) {
+    last_write_error_ = maybe_precondition.status();
+  } else {
+    WriteMutations(
+        {std::move(data).ToMutation(key, maybe_precondition.ValueOrDie())});
+  }
+  written_docs_.insert(key);
+}
+
+void Transaction::Delete(const DocumentKey& key) {
+  Mutation mutation = DeleteMutation(key, CreatePrecondition(key));
+  WriteMutations({mutation});
+  written_docs_.insert(key);
+}
+
+void Transaction::Commit(util::StatusCallback&& callback) {
+  EnsureCommitNotCalled();
+
+  // If there was an error writing, raise that error now
+  if (!last_write_error_.ok()) {
+    callback(last_write_error_);
+    return;
+  }
+
+  // Make a list of read documents that haven't been written.
+  std::unordered_set<DocumentKey, DocumentKeyHash> unwritten;
+  for (const auto& kv : read_versions_) {
+    unwritten.insert(kv.first);
+  }
+  // For each mutation, note that the doc was written.
+  for (const Mutation& mutation : mutations_) {
+    unwritten.erase(mutation.key());
+  }
+
+  // For each document that was read but not written to, we want to perform a
+  // `verify` operation.
+  for (const DocumentKey& key : unwritten) {
+    mutations_.push_back(VerifyMutation(key, CreatePrecondition(key)));
+  }
+  committed_ = true;
+  datastore_->CommitMutations(mutations_, std::move(callback));
+}
+
+void Transaction::MarkPermanentlyFailed() {
+  permanent_error_ = true;
+}
+
+bool Transaction::IsPermanentlyFailed() const {
+  return permanent_error_;
+}
+
+void Transaction::EnsureCommitNotCalled() {
+  HARD_ASSERT(!committed_,
+              "A transaction object cannot be used after its "
+              "update callback has been invoked.");
+}
+
+absl::optional<SnapshotVersion> Transaction::GetVersion(
+    const DocumentKey& key) const {
+  auto found = read_versions_.find(key);
+  if (found != read_versions_.end()) {
+    return found->second;
+  }
+  return absl::nullopt;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.h
new file mode 100644
index 0000000..82b941c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction.h	
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_TRANSACTION_H_
+#define FIRESTORE_CORE_SRC_CORE_TRANSACTION_H_
+
+#include <functional>
+#include <memory>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/types/any.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class Precondition;
+class Document;
+}  // namespace model
+
+namespace remote {
+class Datastore;
+}  // namespace remote
+
+namespace core {
+
+class ParsedSetData;
+class ParsedUpdateData;
+
+class Transaction {
+ public:
+  using LookupCallback =
+      std::function<void(const util::StatusOr<std::vector<model::Document>>&)>;
+
+  Transaction() = default;
+  explicit Transaction(remote::Datastore* datastore);
+
+  /**
+   * Takes a set of keys and asynchronously attempts to fetch all the documents
+   * from the backend, ignoring any local changes.
+   */
+  void Lookup(const std::vector<model::DocumentKey>& keys,
+              LookupCallback&& callback);
+
+  /**
+   * Stores mutation for the given key and set data, to be committed when
+   * `Commit` is called.
+   */
+  void Set(const model::DocumentKey& key, ParsedSetData&& data);
+
+  /**
+   * Stores mutations for the given key and update data, to be committed when
+   * `Commit` is called.
+   */
+  void Update(const model::DocumentKey& key, ParsedUpdateData&& data);
+
+  /**
+   * Stores a delete mutation for the given key, to be committed when `Commit`
+   * is called.
+   */
+  void Delete(const model::DocumentKey& key);
+
+  /**
+   * Attempts to commit the mutations set on this transaction. Invokes the given
+   * callback when finished. Once this is called, no other mutations or
+   * commits are allowed on the transaction.
+   */
+  void Commit(util::StatusCallback&& callback);
+
+  /**
+   * Marks the transaction as permanently failed, so the transaction will not
+   * retry.
+   */
+  void MarkPermanentlyFailed();
+
+  /**
+   * Checks if the transaction is permanently failed.
+   */
+  bool IsPermanentlyFailed() const;
+
+ private:
+  /**
+   * Every time a document is read, this should be called to record its version.
+   * If we read two different versions of the same document, this will return an
+   * error. When the transaction is committed, the versions recorded will be set
+   * as preconditions on the writes sent to the backend.
+   */
+  util::Status RecordVersion(const model::Document& doc);
+
+  /** Stores mutations to be written when `Commit` is called. */
+  void WriteMutations(std::vector<model::Mutation>&& mutations);
+
+  /**
+   * Returns version of this doc when it was read in this transaction as a
+   * precondition, or no precondition if it was not read.
+   */
+  model::Precondition CreatePrecondition(const model::DocumentKey& key);
+
+  /**
+   * Returns the precondition for a document if the operation is an update. Will
+   * return a failed status if an error occurred.
+   */
+  util::StatusOr<model::Precondition> CreateUpdatePrecondition(
+      const model::DocumentKey& key);
+
+  void EnsureCommitNotCalled();
+
+  absl::optional<model::SnapshotVersion> GetVersion(
+      const model::DocumentKey& key) const;
+
+  remote::Datastore* datastore_ = nullptr;
+
+  std::vector<model::Mutation> mutations_;
+  bool committed_ = false;
+  bool permanent_error_ = false;
+
+  /**
+   * A deferred usage error that occurred previously in this transaction that
+   * will cause the transaction to fail once it actually commits.
+   */
+  util::Status last_write_error_;
+
+  /**
+   * Set of documents that have been written in the transaction.
+   *
+   * When there's more than one write to the same key in a transaction, any
+   * writes after the first are handled differently.
+   */
+  std::unordered_set<model::DocumentKey, model::DocumentKeyHash> written_docs_;
+
+  std::unordered_map<model::DocumentKey,
+                     model::SnapshotVersion,
+                     model::DocumentKeyHash>
+      read_versions_;
+};
+
+using TransactionResultCallback = util::StatusCallback;
+
+/**
+ * TransactionUpdateCallback is a block that wraps a user's transaction update
+ * block internally.
+ *
+ * The update block will be called with two parameters:
+ *   * The transaction: an object with methods for performing reads and writes
+ * within the transaction.
+ *   * The callback: to be called by the block once the user's code is finished.
+ */
+using TransactionUpdateCallback = std::function<void(
+    std::shared_ptr<Transaction>, TransactionResultCallback)>;
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_TRANSACTION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.cc
new file mode 100644
index 0000000..6ce1b10
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.cc	
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/transaction_runner.h"
+
+#include <utility>
+
+#include "Firestore/core/src/remote/exponential_backoff.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+namespace {
+
+using remote::RemoteStore;
+using util::AsyncQueue;
+using util::Status;
+using util::TimerId;
+
+/** Maximum number of times a transaction can be attempted before failing. */
+constexpr int kMaxAttemptsCount = 5;
+
+bool IsRetryableTransactionError(const util::Status& error) {
+  // In transactions, the backend will fail outdated reads with
+  // FAILED_PRECONDITION and non-matching document versions with ABORTED. These
+  // errors should be retried.
+  Error code = error.code();
+  return code == Error::kErrorAborted ||
+         code == Error::kErrorFailedPrecondition ||
+         !remote::Datastore::IsPermanentError(error);
+}
+}  // namespace
+
+TransactionRunner::TransactionRunner(const std::shared_ptr<AsyncQueue>& queue,
+                                     RemoteStore* remote_store,
+                                     TransactionUpdateCallback update_callback,
+                                     TransactionResultCallback result_callback)
+    : queue_{queue},
+      remote_store_{remote_store},
+      update_callback_{std::move(update_callback)},
+      result_callback_{std::move(result_callback)},
+      backoff_{queue_, TimerId::RetryTransaction},
+      attempts_remaining_{kMaxAttemptsCount} {
+}
+
+void TransactionRunner::Run() {
+  queue_->VerifyIsCurrentQueue();
+  attempts_remaining_ -= 1;
+
+  auto shared_this = this->shared_from_this();
+  backoff_.BackoffAndRun([shared_this] {
+    std::shared_ptr<Transaction> transaction =
+        shared_this->remote_store_->CreateTransaction();
+    shared_this->update_callback_(
+        transaction, [transaction, shared_this](const util::Status& status) {
+          shared_this->queue_->Enqueue([transaction, shared_this, status] {
+            shared_this->ContinueCommit(transaction, status);
+          });
+        });
+  });
+}
+
+void TransactionRunner::ContinueCommit(
+    const std::shared_ptr<Transaction>& transaction, util::Status status) {
+  if (!status.ok()) {
+    HandleTransactionError(transaction, std::move(status));
+  } else {
+    auto shared_this = this->shared_from_this();
+    transaction->Commit([shared_this, transaction](Status commit_status) {
+      shared_this->DispatchResult(transaction, std::move(commit_status));
+    });
+  }
+}
+
+void TransactionRunner::DispatchResult(
+    const std::shared_ptr<Transaction>& transaction, Status status) {
+  if (status.ok()) {
+    result_callback_(std::move(status));
+  } else {
+    HandleTransactionError(transaction, std::move(status));
+  }
+}
+
+void TransactionRunner::HandleTransactionError(
+    const std::shared_ptr<Transaction>& transaction, Status status) {
+  if (attempts_remaining_ > 0 && IsRetryableTransactionError(status) &&
+      !transaction->IsPermanentlyFailed()) {
+    Run();
+  } else {
+    result_callback_(std::move(status));
+  }
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.h
new file mode 100644
index 0000000..7e3501a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/transaction_runner.h	
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_TRANSACTION_RUNNER_H_
+#define FIRESTORE_CORE_SRC_CORE_TRANSACTION_RUNNER_H_
+
+#include <memory>
+
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/remote/exponential_backoff.h"
+#include "Firestore/core/src/remote/remote_store.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/**
+ * TransactionRunner encapsulates the logic needed to run and retry transactions
+ * with backoff.
+ *
+ * TransactionRunner manages its own lifetime by keeping itself alive until all
+ * retries are completed. It must be allocated via
+ * std::make_shared<TransactionRunner> because the implementation expects to be
+ * able to call std::shared_from_this to create additional references that will
+ * keep it alive.
+ */
+class TransactionRunner
+    : public std::enable_shared_from_this<TransactionRunner> {
+ public:
+  TransactionRunner(const std::shared_ptr<util::AsyncQueue>& queue,
+                    remote::RemoteStore* remote_store,
+                    core::TransactionUpdateCallback update_callback,
+                    core::TransactionResultCallback result_callback);
+
+  /**
+   * Runs the transaction and calls the result_callback_ with the result.
+   */
+  void Run();
+
+ private:
+  void ContinueCommit(const std::shared_ptr<Transaction>& transaction,
+                      util::Status status);
+
+  void DispatchResult(const std::shared_ptr<Transaction>& transaction,
+                      util::Status status);
+
+  void HandleTransactionError(const std::shared_ptr<Transaction>& transaction,
+                              util::Status status);
+
+  std::shared_ptr<util::AsyncQueue> queue_;
+  remote::RemoteStore* remote_store_;
+  core::TransactionUpdateCallback update_callback_;
+  core::TransactionResultCallback result_callback_;
+  remote::ExponentialBackoff backoff_;
+  int attempts_remaining_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_TRANSACTION_RUNNER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.cc
new file mode 100644
index 0000000..0a2a771
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.cc	
@@ -0,0 +1,257 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/user_data.h"
+
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/patch_mutation.h"
+#include "Firestore/core/src/model/set_mutation.h"
+#include "Firestore/core/src/model/transform_operation.h"
+#include "Firestore/core/src/util/exception.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::DocumentKey;
+using model::FieldMask;
+using model::FieldPath;
+using model::FieldTransform;
+using model::Mutation;
+using model::ObjectValue;
+using model::PatchMutation;
+using model::Precondition;
+using model::SetMutation;
+using model::TransformOperation;
+using util::ThrowInvalidArgument;
+
+// MARK: - ParseAccumulator
+
+ParseContext ParseAccumulator::RootContext() {
+  return ParseContext{
+      this, absl::make_unique<FieldPath>(FieldPath::EmptyPath()), false};
+}
+
+bool ParseAccumulator::Contains(const FieldPath& field_path) const {
+  for (const FieldPath& field : field_mask_) {
+    if (field_path.IsPrefixOf(field)) {
+      return true;
+    }
+  }
+
+  for (const FieldTransform& field_transform : field_transforms_) {
+    if (field_path.IsPrefixOf(field_transform.path())) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void ParseAccumulator::AddToFieldMask(FieldPath field_path) {
+  field_mask_.insert(std::move(field_path));
+}
+
+void ParseAccumulator::AddToFieldTransforms(
+    FieldPath field_path, TransformOperation transform_operation) {
+  // TODO(mrschmidt): Validate that the paths are unique
+  field_transforms_.emplace_back(std::move(field_path),
+                                 std::move(transform_operation));
+}
+
+ParsedSetData ParseAccumulator::MergeData(ObjectValue data) && {
+  return ParsedSetData{std::move(data), FieldMask{std::move(field_mask_)},
+                       std::move(field_transforms_)};
+}
+
+ParsedSetData ParseAccumulator::MergeData(ObjectValue data,
+                                          model::FieldMask user_field_mask) && {
+  std::vector<FieldTransform> covered_field_transforms;
+
+  for (FieldTransform& field_transform : field_transforms_) {
+    if (user_field_mask.covers(field_transform.path())) {
+      covered_field_transforms.push_back(std::move(field_transform));
+    }
+  }
+
+  return ParsedSetData{std::move(data), std::move(user_field_mask),
+                       std::move(covered_field_transforms)};
+}
+
+ParsedSetData ParseAccumulator::SetData(ObjectValue data) && {
+  return ParsedSetData{std::move(data), std::move(field_transforms_)};
+}
+
+ParsedUpdateData ParseAccumulator::UpdateData(ObjectValue data) && {
+  return ParsedUpdateData{std::move(data), FieldMask{std::move(field_mask_)},
+                          std::move(field_transforms_)};
+}
+
+// MARK: - ParseContext
+
+namespace {
+
+const char* RESERVED_FIELD_DESIGNATOR = "__";
+
+}  // namespace
+
+ParseContext ParseContext::ChildContext(const std::string& field_name) {
+  std::unique_ptr<FieldPath> path;
+  if (path_) {
+    path = absl::make_unique<FieldPath>(path_->Append(field_name));
+  }
+
+  ParseContext context{accumulator_, std::move(path), false};
+  context.ValidatePathSegment(field_name);
+  return context;
+}
+
+ParseContext ParseContext::ChildContext(const FieldPath& field_path) {
+  std::unique_ptr<FieldPath> path;
+  if (path_) {
+    path = absl::make_unique<FieldPath>(path_->Append(field_path));
+  }
+
+  ParseContext context{accumulator_, std::move(path), false};
+  context.ValidatePath();
+  return context;
+}
+
+ParseContext ParseContext::ChildContext(size_t array_index) {
+  // TODO(b/34871131): We don't support array paths right now; make path null.
+  (void)array_index;
+  return {accumulator_, /* path= */ nullptr, /* array_element= */ true};
+}
+
+/**
+ * Returns a string that can be appended to error messages indicating what field
+ * caused the error.
+ */
+std::string ParseContext::FieldDescription() const {
+  // TODO(b/34871131): Remove nullptr check once we have proper paths for fields
+  // within arrays.
+  if (!path_ || path_->empty()) {
+    return "";
+  } else {
+    return util::StringFormat(" (found in field %s)", path_->CanonicalString());
+  }
+}
+
+bool ParseContext::write() const {
+  switch (accumulator_->data_source()) {
+    case UserDataSource::Set:       // Falls through.
+    case UserDataSource::MergeSet:  // Falls through.
+    case UserDataSource::Update:
+      return true;
+    case UserDataSource::Argument:
+    case UserDataSource::ArrayArgument:
+      return false;
+    default:
+      ThrowInvalidArgument("Unexpected case for UserDataSource: %s",
+                           accumulator_->data_source());
+  }
+}
+
+void ParseContext::ValidatePath() const {
+  // TODO(b/34871131): Remove nullptr check once we have proper paths for fields
+  // within arrays.
+  if (!path_) {
+    return;
+  }
+  for (const std::string& segment : *path_) {
+    ValidatePathSegment(segment);
+  }
+}
+
+void ParseContext::ValidatePathSegment(absl::string_view segment) const {
+  absl::string_view designator{RESERVED_FIELD_DESIGNATOR};
+  if (segment.empty()) {
+    ThrowInvalidArgument("Invalid data. Document fields must not be empty%s",
+                         FieldDescription());
+  }
+  if (write() && absl::StartsWith(segment, designator) &&
+      absl::EndsWith(segment, designator)) {
+    ThrowInvalidArgument(
+        "Invalid data. Document fields cannot begin and end with \"%s\"%s",
+        RESERVED_FIELD_DESIGNATOR, FieldDescription());
+  }
+}
+
+void ParseContext::AddToFieldMask(FieldPath field_path) {
+  accumulator_->AddToFieldMask(std::move(field_path));
+}
+
+void ParseContext::AddToFieldTransforms(
+    FieldPath field_path, TransformOperation transform_operation) {
+  accumulator_->AddToFieldTransforms(std::move(field_path),
+                                     std::move(transform_operation));
+}
+
+// MARK: - ParsedSetData
+
+ParsedSetData::ParsedSetData(ObjectValue data,
+                             std::vector<FieldTransform> field_transforms)
+    : data_{std::move(data)},
+      field_transforms_{std::move(field_transforms)},
+      patch_{false} {
+}
+
+ParsedSetData::ParsedSetData(ObjectValue data,
+                             FieldMask field_mask,
+                             std::vector<FieldTransform> field_transforms)
+    : data_{std::move(data)},
+      field_mask_{std::move(field_mask)},
+      field_transforms_{std::move(field_transforms)},
+      patch_{true} {
+}
+
+Mutation ParsedSetData::ToMutation(const DocumentKey& key,
+                                   const Precondition& precondition) && {
+  if (patch_) {
+    return PatchMutation(key, std::move(data_), std::move(field_mask_),
+                         precondition, std::move(field_transforms_));
+  } else {
+    return SetMutation(key, std::move(data_), precondition,
+                       std::move(field_transforms_));
+  }
+}
+
+// MARK: - ParsedUpdateData
+
+ParsedUpdateData::ParsedUpdateData(
+    ObjectValue data,
+    model::FieldMask field_mask,
+    std::vector<model::FieldTransform> field_transforms)
+    : data_{std::move(data)},
+      field_mask_{std::move(field_mask)},
+      field_transforms_{std::move(field_transforms)} {
+}
+
+Mutation ParsedUpdateData::ToMutation(const DocumentKey& key,
+                                      const Precondition& precondition) && {
+  return PatchMutation(key, std::move(data_), std::move(field_mask_),
+                       precondition, std::move(field_transforms_));
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.h
new file mode 100644
index 0000000..eb20250
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/user_data.h	
@@ -0,0 +1,338 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_USER_DATA_H_
+#define FIRESTORE_CORE_SRC_CORE_USER_DATA_H_
+
+#include <memory>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/field_mask.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/field_transform.h"
+#include "Firestore/core/src/model/object_value.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class Precondition;
+class Mutation;
+class DocumentKey;
+
+}  // namespace model
+
+namespace core {
+
+class ParseContext;
+class ParsedSetData;
+class ParsedUpdateData;
+
+/**
+ * Represents what type of API method provided the data being parsed; useful for
+ * determining which error conditions apply during parsing and providing better
+ * error messages.
+ */
+enum class UserDataSource {
+  /** The data comes from a regular Set operation, without merge. */
+  Set,
+  /** The data comes from a Set operation with merge enabled. */
+  MergeSet,
+  /** The data comes from an Update operation. */
+  Update,
+  /**
+   * Indicates the source is a where clause, cursor bound, array union element,
+   * etc. In particular, this will result in ParseContext.write() returning
+   * false.
+   */
+  Argument,
+  /**
+   * Indicates that the source is an Argument that may directly contain nested
+   * arrays (e.g. the operand of a `in` query).
+   */
+  ArrayArgument
+};
+
+/**
+ * Accumulates the side-effect results of parsing user input. These include:
+ *
+ *   * The field mask naming all the fields that have values.
+ *   * The transform operations that must be applied in the batch to implement
+ *     server-generated behavior. In the wire protocol these are encoded
+ *     separately from the Value.
+ */
+class ParseAccumulator {
+ public:
+  /**
+   * @param data_source Indicates what kind of API method this data came from.
+   */
+  explicit ParseAccumulator(UserDataSource data_source)
+      : data_source_{data_source} {
+  }
+
+  /**
+   * What type of API method provided the data being parsed; useful for
+   * determining which error conditions apply during parsing and providing
+   * better error messages.
+   */
+  UserDataSource data_source() const {
+    return data_source_;
+  }
+
+  /**
+   * Returns the current list of transforms.
+   */
+  const std::vector<model::FieldTransform>& field_transforms() const {
+    return field_transforms_;
+  }
+
+  /**
+   * Returns a new ParseContext representing the root of a user document.
+   */
+  ParseContext RootContext();
+
+  /**
+   * Returns `true` if the given `field_path` was encountered in the current
+   * document.
+   */
+  bool Contains(const model::FieldPath& field_path) const;
+
+  /**
+   * Adds the given `field_path` to the accumulated FieldMask.
+   */
+  void AddToFieldMask(model::FieldPath field_path);
+
+  /**
+   * Adds a transformation for the given field path.
+   */
+  void AddToFieldTransforms(model::FieldPath field_path,
+                            model::TransformOperation transform_operation);
+
+  /**
+   * Wraps the given `data` along with any accumulated field mask and transforms
+   * into a ParsedSetData representing a user-issued merge.
+   *
+   * @return ParsedSetData that has consumed the contents of this
+   * ParseAccumulator.
+   */
+  ParsedSetData MergeData(model::ObjectValue data) &&;
+
+  /**
+   * Wraps the given `data` and `user_field_mask` along with any accumulated
+   * transforms that are covered by the given field mask into a ParsedSetData
+   * that represents a user-issued merge.
+   *
+   * @param data The converted user data.
+   * @param user_field_mask The user-supplied field mask that masks out any
+   *     changes that have been accumulated so far.
+   *
+   * @return ParsedSetData that has consumed the contents of this
+   * ParseAccumulator. The field mask in the result will be the user_field_mask
+   * and only transforms that are covered by the mask will be included.
+   */
+  ParsedSetData MergeData(model::ObjectValue data,
+                          model::FieldMask user_field_mask) &&;
+
+  /**
+   * Wraps the given `data` along with any accumulated transforms into a
+   * ParsedSetData that represents a user-issued Set.
+   *
+   * @return ParsedSetData that has consumed the contents of this
+   * ParseAccumulator.
+   */
+  ParsedSetData SetData(model::ObjectValue data) &&;
+
+  /**
+   * Wraps the given `data` along with any accumulated field mask and transforms
+   * into a ParsedUpdateData that represents a user-issued Update.
+   *
+   * @return ParsedSetData that has consumed the contents of this
+   * ParseAccumulator.
+   */
+  ParsedUpdateData UpdateData(model::ObjectValue data) &&;
+
+ private:
+  friend class ParseContext;
+
+  UserDataSource data_source_;
+
+  // field_mask_ and field_transforms_ are shared across all active context
+  // objects to accumulate the result. All ChildContext objects append their
+  // results here.
+  std::set<model::FieldPath> field_mask_;
+  std::vector<model::FieldTransform> field_transforms_;
+};
+
+/**
+ * A "context" object that wraps a ParseAccumulator and refers to a specific
+ * location in a user-supplied document. Instances are created and passed around
+ * while traversing user data during parsing in order to conveniently accumulate
+ * data in the ParseAccumulator.
+ */
+class ParseContext {
+ public:
+  /**
+   * Initializes a ParseContext with the given source and path.
+   *
+   * @param path A path within the object being parsed. This could be an empty
+   * path (in which case the context represents the root of the data being
+   * parsed), or a nonempty path (indicating the context represents a nested
+   * location within the data).
+   *
+   * TODO(b/34871131): We don't support array paths right now, so path can be
+   * nullptr to indicate the context represents any location within an array (in
+   * which case certain features will not work and errors will be somewhat
+   * compromised).
+   */
+  ParseContext(ParseAccumulator* accumulator,
+               std::unique_ptr<model::FieldPath> path,
+               bool array_element)
+      : accumulator_{accumulator},
+        path_{std::move(path)},
+        array_element_{array_element} {
+  }
+
+  /** Whether or not this context corresponds to an element of an array. */
+  bool array_element() const {
+    return array_element_;
+  }
+
+  /**
+   * What type of API method provided the data being parsed; useful for
+   * determining which error conditions apply during parsing and providing
+   * better error messages.
+   */
+  UserDataSource data_source() const {
+    return accumulator_->data_source_;
+  }
+
+  const model::FieldPath* path() const {
+    return path_.get();
+  }
+
+  /**
+   * Returns true for the non-query parse contexts (Set, MergeSet and Update).
+   */
+  bool write() const;
+
+  std::string FieldDescription() const;
+
+  // Helpers to get a ParseContext for a child field.
+  ParseContext ChildContext(const std::string& field_name);
+  ParseContext ChildContext(const model::FieldPath& field_path);
+  ParseContext ChildContext(size_t array_index);
+
+  void AddToFieldMask(model::FieldPath field_path);
+
+  void AddToFieldTransforms(model::FieldPath field_path,
+                            model::TransformOperation transform_operation);
+
+ private:
+  void ValidatePath() const;
+  void ValidatePathSegment(absl::string_view segment) const;
+
+  ParseAccumulator* accumulator_;  // Non owning
+
+  /** The current path being parsed. */
+  // TODO(b/34871131): path should never be nullptr, but we don't support array
+  // paths right now.
+  std::unique_ptr<model::FieldPath> path_;
+
+  bool array_element_ = false;
+};
+
+/** The result of parsing document data (e.g. for a SetData call). */
+class ParsedSetData {
+ public:
+  ParsedSetData(model::ObjectValue data,
+                std::vector<model::FieldTransform> field_transforms);
+  ParsedSetData(model::ObjectValue data,
+                model::FieldMask field_mask,
+                std::vector<model::FieldTransform> field_transforms);
+
+  /**
+   * Converts the parsed document data into 1 or 2 mutations (depending on
+   * whether there are any field transforms) using the specified document key
+   * and precondition.
+   *
+   * This method consumes the values stored in the ParsedSetData
+   */
+  model::Mutation ToMutation(const model::DocumentKey& key,
+                             const model::Precondition& precondition) &&;
+
+  const model::ObjectValue& data() const {
+    return data_;
+  }
+
+  const model::FieldMask& fieldMask() const {
+    return field_mask_;
+  }
+
+  const std::vector<model::FieldTransform>& field_transforms() const {
+    return field_transforms_;
+  }
+
+ private:
+  model::ObjectValue data_;
+  model::FieldMask field_mask_;
+  std::vector<model::FieldTransform> field_transforms_;
+  bool patch_;
+};
+
+/** The result of parsing "update" data (i.e. for an UpdateData call). */
+class ParsedUpdateData {
+ public:
+  ParsedUpdateData(model::ObjectValue data,
+                   model::FieldMask field_mask,
+                   std::vector<model::FieldTransform> field_transforms);
+
+  const model::ObjectValue& data() const {
+    return data_;
+  }
+
+  const model::FieldMask& fieldMask() const {
+    return field_mask_;
+  }
+
+  const std::vector<model::FieldTransform>& field_transforms() const {
+    return field_transforms_;
+  }
+
+  /**
+   * Converts the parsed update data into 1 or 2 mutations (depending on whether
+   * there are any field transforms) using the specified document key and
+   * precondition.
+   *
+   * This method consumes the values stored in the ParsedUpdateData
+   */
+  model::Mutation ToMutation(const model::DocumentKey& key,
+                             const model::Precondition& precondition) &&;
+
+ private:
+  model::ObjectValue data_;
+  // The field mask does not include document transforms.
+  model::FieldMask field_mask_;
+  std::vector<model::FieldTransform> field_transforms_;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_USER_DATA_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.cc
new file mode 100644
index 0000000..c80adf5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.cc	
@@ -0,0 +1,399 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/view.h"
+
+#include <utility>
+
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/model/document_set.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::DocumentSet;
+using model::OnlineState;
+using remote::TargetChange;
+using util::ComparisonResult;
+
+// MARK: - LimboDocumentChange
+
+LimboDocumentChange::LimboDocumentChange(
+    firebase::firestore::core::LimboDocumentChange::Type type,
+    firebase::firestore::model::DocumentKey key)
+    : type_(type), key_(std::move(key)) {
+}
+
+bool operator==(const LimboDocumentChange& lhs,
+                const LimboDocumentChange& rhs) {
+  return lhs.type() == rhs.type() && lhs.key() == rhs.key();
+}
+
+// MARK: - ViewDocumentChanges
+
+ViewDocumentChanges::ViewDocumentChanges(model::DocumentSet new_documents,
+                                         DocumentViewChangeSet changes,
+                                         model::DocumentKeySet mutated_keys,
+                                         bool needs_refill)
+    : document_set_(std::move(new_documents)),
+      change_set_(std::move(changes)),
+      mutated_keys_(std::move(mutated_keys)),
+      needs_refill_(needs_refill) {
+}
+
+// MARK: - View
+
+namespace {
+
+int GetDocumentViewChangeTypePosition(DocumentViewChange::Type change_type) {
+  switch (change_type) {
+    case DocumentViewChange::Type::Removed:
+      return 0;
+    case DocumentViewChange::Type::Added:
+      return 1;
+    case DocumentViewChange::Type::Modified:
+      return 2;
+    case DocumentViewChange::Type::Metadata:
+      // A metadata change is converted to a modified change at the public API
+      // layer. Since we sort by document key and then change type, metadata and
+      // modified changes must be sorted equivalently.
+      return 2;
+  }
+  HARD_FAIL("Unknown DocumentViewChange::Type %s", change_type);
+}
+
+}  // namespace
+
+View::View(Query query, DocumentKeySet remote_documents)
+    : query_(std::move(query)),
+      document_set_(query_.Comparator()),
+      synced_documents_(std::move(remote_documents)) {
+}
+
+ComparisonResult View::Compare(const Document& lhs, const Document& rhs) const {
+  return document_set_.comparator().Compare(lhs, rhs);
+}
+
+ViewDocumentChanges View::ComputeDocumentChanges(
+    const DocumentMap& doc_changes,
+    const absl::optional<ViewDocumentChanges>& previous_changes) const {
+  DocumentViewChangeSet change_set;
+  if (previous_changes) {
+    change_set = previous_changes->change_set();
+  }
+  DocumentSet old_document_set =
+      previous_changes ? previous_changes->document_set() : document_set_;
+
+  DocumentKeySet new_mutated_keys =
+      previous_changes ? previous_changes->mutated_keys() : mutated_keys_;
+  DocumentKeySet old_mutated_keys = mutated_keys_;
+  DocumentSet new_document_set = old_document_set;
+  bool needs_refill = false;
+
+  // Track the last doc in a (full) limit. This is necessary, because some
+  // update (a delete, or an update moving a doc past the old limit) might mean
+  // there is some other document in the local cache that either should come (1)
+  // between the old last limit doc and the new last document, in the case of
+  // updates, or (2) after the new last document, in the case of deletes. So we
+  // keep this doc at the old limit to compare the updates to.
+  //
+  // Note that this should never get used in a refill (when previous_changes is
+  // set), because there will only be adds -- no deletes or updates.
+  absl::optional<Document> last_doc_in_limit;
+  if (query_.has_limit_to_first() &&
+      old_document_set.size() == static_cast<size_t>(query_.limit())) {
+    last_doc_in_limit = old_document_set.GetLastDocument();
+  }
+  absl::optional<Document> first_doc_in_limit;
+  if (query_.has_limit_to_last() &&
+      old_document_set.size() == static_cast<size_t>(query_.limit())) {
+    first_doc_in_limit = old_document_set.GetFirstDocument();
+  }
+
+  for (const auto& kv : doc_changes) {
+    const DocumentKey& key = kv.first;
+
+    absl::optional<Document> old_doc = old_document_set.GetDocument(key);
+    absl::optional<Document> new_doc = query_.Matches(kv.second)
+                                           ? absl::optional<Document>{kv.second}
+                                           : absl::nullopt;
+
+    bool old_doc_had_pending_mutations =
+        old_doc && old_mutated_keys.contains(key);
+
+    // We only consider committed mutations for documents that were mutated
+    // during the lifetime of the view.
+    bool new_doc_has_pending_mutations =
+        new_doc && ((*new_doc)->has_local_mutations() ||
+                    (old_mutated_keys.contains(key) &&
+                     (*new_doc)->has_committed_mutations()));
+
+    bool change_applied = false;
+    // Calculate change
+    if (old_doc && new_doc) {
+      bool docs_equal = (*old_doc)->value() == (*new_doc)->value();
+      if (!docs_equal) {
+        if (!ShouldWaitForSyncedDocument(*new_doc, *old_doc)) {
+          change_set.AddChange(
+              DocumentViewChange{*new_doc, DocumentViewChange::Type::Modified});
+          change_applied = true;
+
+          bool outside_limit =
+              last_doc_in_limit &&
+              util::Descending(Compare(*new_doc, *last_doc_in_limit));
+          bool outside_limit_to_last =
+              first_doc_in_limit &&
+              util::Ascending(Compare(*new_doc, *first_doc_in_limit));
+          if (outside_limit || outside_limit_to_last) {
+            // This doc moved from inside the limit to after the limit. That
+            // means there may be some doc in the local cache that's actually
+            // less than this one.
+            needs_refill = true;
+          }
+        }
+      } else if (old_doc_had_pending_mutations !=
+                 new_doc_has_pending_mutations) {
+        change_set.AddChange(
+            DocumentViewChange{*new_doc, DocumentViewChange::Type::Metadata});
+        change_applied = true;
+      }
+
+    } else if (!old_doc && new_doc) {
+      change_set.AddChange(
+          DocumentViewChange{*new_doc, DocumentViewChange::Type::Added});
+      change_applied = true;
+    } else if (old_doc && !new_doc) {
+      change_set.AddChange(
+          DocumentViewChange{*old_doc, DocumentViewChange::Type::Removed});
+      change_applied = true;
+
+      if (last_doc_in_limit || first_doc_in_limit) {
+        // A doc was removed from a full limit query. We'll need to re-query
+        // from the local cache to see if we know about some other doc that
+        // should be in the results.
+        needs_refill = true;
+      }
+    }
+
+    if (change_applied) {
+      if (new_doc) {
+        new_document_set = new_document_set.insert(new_doc);
+        if ((*new_doc)->has_local_mutations()) {
+          new_mutated_keys = new_mutated_keys.insert(key);
+        } else {
+          new_mutated_keys = new_mutated_keys.erase(key);
+        }
+      } else {
+        new_document_set = new_document_set.erase(key);
+        new_mutated_keys = new_mutated_keys.erase(key);
+      }
+    }
+  }
+
+  // Drop documents out to meet limitToFirst/limitToLast requirement.
+  if (query_.limit_type() != LimitType::None) {
+    auto limit = static_cast<size_t>(query_.limit());
+    if (limit < new_document_set.size()) {
+      for (size_t i = new_document_set.size() - limit; i > 0; --i) {
+        absl::optional<Document> found =
+            query_.has_limit_to_first() ? new_document_set.GetLastDocument()
+                                        : new_document_set.GetFirstDocument();
+        const Document& old_doc = *found;
+        new_document_set = new_document_set.erase(old_doc->key());
+        new_mutated_keys = new_mutated_keys.erase(old_doc->key());
+        change_set.AddChange(
+            DocumentViewChange{old_doc, DocumentViewChange::Type::Removed});
+      }
+    }
+  }
+
+  HARD_ASSERT(!needs_refill || !previous_changes,
+              "View was refilled using docs that themselves needed refilling.");
+
+  return ViewDocumentChanges(std::move(new_document_set), std::move(change_set),
+                             new_mutated_keys, needs_refill);
+}
+
+bool View::ShouldWaitForSyncedDocument(const Document& new_doc,
+                                       const Document& old_doc) const {
+  // We suppress the initial change event for documents that were modified as
+  // part of a write acknowledgment (e.g. when the value of a server transform
+  // is applied) as Watch will send us the same document again. By suppressing
+  // the event, we only raise two user visible events (one with
+  // `has_pending_writes` and the final state of the document) instead of three
+  // (one with `has_pending_writes`, the modified document with
+  // `has_pending_writes` and the final state of the document).
+  return (old_doc->has_local_mutations() &&
+          new_doc->has_committed_mutations() &&
+          !new_doc->has_local_mutations());
+}
+
+ViewChange View::ApplyChanges(const ViewDocumentChanges& doc_changes) {
+  return ApplyChanges(doc_changes, {});
+}
+
+ViewChange View::ApplyChanges(
+    const ViewDocumentChanges& doc_changes,
+    const absl::optional<TargetChange>& target_change) {
+  HARD_ASSERT(!doc_changes.needs_refill(),
+              "Cannot apply changes that need a refill");
+
+  DocumentSet old_documents = document_set_;
+  document_set_ = doc_changes.document_set();
+  mutated_keys_ = doc_changes.mutated_keys();
+
+  // Sort changes based on type and query comparator.
+  std::vector<DocumentViewChange> changes =
+      doc_changes.change_set().GetChanges();
+  std::sort(
+      changes.begin(), changes.end(),
+      [this](const DocumentViewChange& lhs, const DocumentViewChange& rhs) {
+        int pos1 = GetDocumentViewChangeTypePosition(lhs.type());
+        int pos2 = GetDocumentViewChangeTypePosition(rhs.type());
+        if (pos1 != pos2) {
+          return pos1 < pos2;
+        }
+        return util::Ascending(Compare(lhs.document(), rhs.document()));
+      });
+
+  ApplyTargetChange(target_change);
+  std::vector<LimboDocumentChange> limbo_changes = UpdateLimboDocuments();
+  bool synced = limbo_documents_.empty() && current_;
+  SyncState new_sync_state = synced ? SyncState::Synced : SyncState::Local;
+  bool sync_state_changed = new_sync_state != sync_state_;
+  sync_state_ = new_sync_state;
+
+  if (changes.empty() && !sync_state_changed) {
+    // No changes.
+    return ViewChange(absl::nullopt, std::move(limbo_changes));
+  } else {
+    ViewSnapshot snapshot{query_,
+                          doc_changes.document_set(),
+                          old_documents,
+                          std::move(changes),
+                          doc_changes.mutated_keys(),
+                          /*from_cache=*/new_sync_state == SyncState::Local,
+                          sync_state_changed,
+                          /*excludes_metadata_changes=*/false};
+
+    return ViewChange(std::move(snapshot), std::move(limbo_changes));
+  }
+}
+
+ViewChange View::ApplyOnlineStateChange(OnlineState online_state) {
+  if (current_ && online_state == OnlineState::Offline) {
+    // If we're offline, set `current_` to false and then call ApplyChanges to
+    // refresh our sync state and generate a ViewChange as appropriate. We are
+    // guaranteed to get a new `TargetChange` that sets `current_` back to true
+    // once the client is back online.
+    current_ = false;
+    return ApplyChanges(
+        ViewDocumentChanges(document_set_, DocumentViewChangeSet{},
+                            mutated_keys_, /* needs_refill= */ false));
+  } else {
+    // No effect, just return a no-op ViewChange.
+    return ViewChange(absl::nullopt, {});
+  }
+}
+
+// MARK: Private Methods
+
+/** Returns whether the doc for the given key should be in limbo. */
+bool View::ShouldBeInLimbo(const DocumentKey& key) const {
+  // If the remote end says it's part of this query, it's not in limbo.
+  if (synced_documents_.contains(key)) {
+    return false;
+  }
+  // The local store doesn't think it's a result, so it shouldn't be in limbo.
+  if (!document_set_.ContainsKey(key)) {
+    return false;
+  }
+  // If there are local changes to the doc, they might explain why the server
+  // doesn't know that it's part of the query. So don't put it in limbo.
+  // TODO(klimt): Ideally, we would only consider changes that might actually
+  // affect this specific query.
+  if ((*document_set_.GetDocument(key))->has_local_mutations()) {
+    return false;
+  }
+  // Everything else is in limbo.
+  return true;
+}
+
+/**
+ * Updates synced_documents_ and current based on the given change.
+ */
+void View::ApplyTargetChange(
+    const absl::optional<TargetChange>& maybe_target_change) {
+  if (maybe_target_change.has_value()) {
+    const TargetChange& target_change = maybe_target_change.value();
+
+    for (const DocumentKey& key : target_change.added_documents()) {
+      synced_documents_ = synced_documents_.insert(key);
+    }
+    for (const DocumentKey& key : target_change.modified_documents()) {
+      HARD_ASSERT(synced_documents_.find(key) != synced_documents_.end(),
+                  "Modified document %s not found in view.", key.ToString());
+    }
+    for (const DocumentKey& key : target_change.removed_documents()) {
+      synced_documents_ = synced_documents_.erase(key);
+    }
+
+    current_ = target_change.current();
+  }
+}
+
+/** Updates limbo_documents_ and returns any changes as LimboDocumentChanges. */
+std::vector<LimboDocumentChange> View::UpdateLimboDocuments() {
+  // We can only determine limbo documents when we're in-sync with the server.
+  if (!current_) {
+    return {};
+  }
+
+  // TODO(klimt): Do this incrementally so that it's not quadratic when updating
+  // many documents.
+  DocumentKeySet old_limbo_documents = std::move(limbo_documents_);
+  limbo_documents_ = DocumentKeySet{};
+  for (const Document& doc : document_set_) {
+    if (ShouldBeInLimbo(doc->key())) {
+      limbo_documents_ = limbo_documents_.insert(doc->key());
+    }
+  }
+
+  // Diff the new limbo docs with the old limbo docs.
+  std::vector<LimboDocumentChange> changes;
+  changes.reserve(old_limbo_documents.size() + limbo_documents_.size());
+
+  for (const DocumentKey& key : old_limbo_documents) {
+    if (!limbo_documents_.contains(key)) {
+      changes.push_back(LimboDocumentChange::Removed(key));
+    }
+  }
+  for (const DocumentKey& key : limbo_documents_) {
+    if (!old_limbo_documents.contains(key)) {
+      changes.push_back(LimboDocumentChange::Added(key));
+    }
+  }
+  return changes;
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.h
new file mode 100644
index 0000000..b3cdbce
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view.h	
@@ -0,0 +1,237 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_VIEW_H_
+#define FIRESTORE_CORE_SRC_CORE_VIEW_H_
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/remote/remote_event.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/** A change to a particular document wrt whether it is in "limbo". */
+class LimboDocumentChange {
+ public:
+  enum class Type {
+    Added,
+    Removed,
+  };
+
+  static LimboDocumentChange Added(model::DocumentKey key) {
+    return {Type::Added, std::move(key)};
+  }
+
+  static LimboDocumentChange Removed(model::DocumentKey key) {
+    return {Type::Removed, std::move(key)};
+  }
+
+  LimboDocumentChange(Type type, model::DocumentKey key);
+
+  Type type() const {
+    return type_;
+  }
+
+  const model::DocumentKey& key() const {
+    return key_;
+  }
+
+  friend bool operator==(const LimboDocumentChange& lhs,
+                         const LimboDocumentChange& rhs);
+
+ private:
+  Type type_;
+  model::DocumentKey key_;
+};
+
+/** The result of applying a set of doc changes to a view. */
+class ViewDocumentChanges {
+ public:
+  ViewDocumentChanges(model::DocumentSet new_documents,
+                      DocumentViewChangeSet changes,
+                      model::DocumentKeySet mutated_keys,
+                      bool needs_refill);
+
+  /** The new set of docs that should be in the view. */
+  const model::DocumentSet& document_set() const {
+    return document_set_;
+  }
+
+  /** The diff of these docs with the previous set of docs. */
+  const core::DocumentViewChangeSet& change_set() const {
+    return change_set_;
+  }
+
+  const model::DocumentKeySet& mutated_keys() const {
+    return mutated_keys_;
+  }
+
+  /**
+   * Whether the set of documents passed in was not sufficient to calculate the
+   * new state of the view and there needs to be another pass based on the local
+   * cache.
+   */
+  bool needs_refill() const {
+    return needs_refill_;
+  }
+
+ private:
+  model::DocumentSet document_set_;
+  core::DocumentViewChangeSet change_set_;
+  model::DocumentKeySet mutated_keys_;
+  bool needs_refill_ = false;
+};
+
+/** A set of changes to a view. */
+class ViewChange {
+ public:
+  ViewChange(absl::optional<ViewSnapshot> snapshot,
+             std::vector<LimboDocumentChange> limbo_changes)
+      : snapshot_(std::move(snapshot)),
+        limbo_changes_(std::move(limbo_changes)) {
+  }
+
+  const absl::optional<ViewSnapshot> snapshot() const& {
+    return snapshot_;
+  }
+
+  absl::optional<ViewSnapshot>&& snapshot() && {
+    return std::move(snapshot_);
+  }
+
+  const std::vector<LimboDocumentChange> limbo_changes() const {
+    return limbo_changes_;
+  }
+
+ private:
+  absl::optional<ViewSnapshot> snapshot_;
+  std::vector<LimboDocumentChange> limbo_changes_;
+};
+
+/**
+ * View is responsible for computing the final merged truth of what docs are in
+ * a query. It gets notified of local and remote changes to docs, and applies
+ * the query filters and limits to determine the most correct possible results.
+ */
+class View {
+ public:
+  View(Query query, model::DocumentKeySet remote_documents);
+
+  /**
+   * The set of remote documents that the server has told us belongs to the
+   * target associated with this view.
+   */
+  const model::DocumentKeySet& synced_documents() const {
+    return synced_documents_;
+  }
+
+  /**
+   * Iterates over a set of doc changes, applies the query limit, and computes
+   * what the new results should be, what the changes were, and whether we may
+   * need to go back to the local cache for more results. Does not make any
+   * changes to the view.
+   *
+   * @param doc_changes The doc changes to apply to this view.
+   * @param previous_changes If this is being called with a refill, then start
+   *     with this set of docs and changes instead of the current view.
+   * @return a new set of docs, changes, and refill flag.
+   */
+  core::ViewDocumentChanges ComputeDocumentChanges(
+      const model::DocumentMap& doc_changes,
+      const absl::optional<core::ViewDocumentChanges>& previous_changes =
+          absl::nullopt) const;
+
+  /**
+   * Updates the view with the given ViewDocumentChanges.
+   *
+   * @param doc_changes The set of changes to make to the view's docs.
+   * @return A new ViewChange with the given docs, changes, and sync state.
+   */
+  ViewChange ApplyChanges(const core::ViewDocumentChanges& doc_changes);
+
+  /**
+   * Updates the view with the given ViewDocumentChanges and updates limbo docs
+   * and sync state from the given (optional) target change.
+   *
+   * @param doc_changes The set of changes to make to the view's docs.
+   * @param target_change A target change to apply for computing limbo docs and
+   *     sync state.
+   * @return A new ViewChange with the given docs, changes, and sync state.
+   */
+  ViewChange ApplyChanges(
+      const core::ViewDocumentChanges& doc_changes,
+      const absl::optional<remote::TargetChange>& target_change);
+
+  /**
+   * Applies an OnlineState change to the view, potentially generating an
+   * ViewChange if the view's sync_state_ changes as a result.
+   */
+  core::ViewChange ApplyOnlineStateChange(model::OnlineState online_state);
+
+  core::SyncState sync_state() const {
+    return sync_state_;
+  }
+
+ private:
+  util::ComparisonResult Compare(const model::Document& lhs,
+                                 const model::Document& rhs) const;
+
+  bool ShouldBeInLimbo(const model::DocumentKey& key) const;
+
+  bool ShouldWaitForSyncedDocument(const model::Document& new_doc,
+                                   const model::Document& old_doc) const;
+
+  void ApplyTargetChange(
+      const absl::optional<remote::TargetChange>& maybe_target_change);
+
+  std::vector<LimboDocumentChange> UpdateLimboDocuments();
+
+  Query query_;
+
+  model::DocumentSet document_set_;
+
+  /** Documents included in the remote target. */
+  model::DocumentKeySet synced_documents_;
+
+  /** Documents in the view but not in the remote target */
+  model::DocumentKeySet limbo_documents_;
+
+  /** Document Keys that have local changes. */
+  model::DocumentKeySet mutated_keys_;
+
+  SyncState sync_state_ = SyncState::None;
+
+  /**
+   * A flag whether the view is current with the backend. A view is considered
+   * current after it has seen the current flag from the backend and did not
+   * lose consistency within the watch stream (e.g. because of an existence
+   * filter mismatch).
+   */
+  bool current_ = false;
+};
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_VIEW_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.cc
new file mode 100644
index 0000000..4a1aa49
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.cc	
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/core/view_snapshot.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "Firestore/core/src/util/to_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::DocumentSet;
+using util::StringFormat;
+
+// DocumentViewChange
+
+DocumentViewChange::DocumentViewChange(Document document, Type type)
+    : document_{std::move(document)}, type_{type} {
+}
+
+const Document& DocumentViewChange::document() const {
+  return document_;
+}
+
+std::string DocumentViewChange::ToString() const {
+  return StringFormat("<DocumentViewChange doc:%s type:%s>",
+                      util::ToString(document()), type());
+}
+
+size_t DocumentViewChange::Hash() const {
+  return util::Hash(document(), type());
+}
+
+bool operator==(const DocumentViewChange& lhs, const DocumentViewChange& rhs) {
+  return lhs.document() == rhs.document() && lhs.type() == rhs.type();
+}
+
+// DocumentViewChangeSet
+
+void DocumentViewChangeSet::AddChange(DocumentViewChange&& change) {
+  const DocumentKey& key = change.document()->key();
+  auto old_change_iter = change_map_.find(key);
+  if (old_change_iter == change_map_.end()) {
+    change_map_ = change_map_.insert(key, change);
+    return;
+  }
+
+  const DocumentViewChange& old = old_change_iter->second;
+  DocumentViewChange::Type old_type = old.type();
+  DocumentViewChange::Type new_type = change.type();
+
+  // Merge the new change with the existing change.
+  if (new_type != DocumentViewChange::Type::Added &&
+      old_type == DocumentViewChange::Type::Metadata) {
+    change_map_ = change_map_.insert(key, change);
+
+  } else if (new_type == DocumentViewChange::Type::Metadata &&
+             old_type != DocumentViewChange::Type::Removed) {
+    DocumentViewChange new_change{change.document(), old_type};
+    change_map_ = change_map_.insert(key, new_change);
+
+  } else if (new_type == DocumentViewChange::Type::Modified &&
+             old_type == DocumentViewChange::Type::Modified) {
+    DocumentViewChange new_change{change.document(),
+                                  DocumentViewChange::Type::Modified};
+    change_map_ = change_map_.insert(key, new_change);
+
+  } else if (new_type == DocumentViewChange::Type::Modified &&
+             old_type == DocumentViewChange::Type::Added) {
+    DocumentViewChange new_change{change.document(),
+                                  DocumentViewChange::Type::Added};
+    change_map_ = change_map_.insert(key, new_change);
+
+  } else if (new_type == DocumentViewChange::Type::Removed &&
+             old_type == DocumentViewChange::Type::Added) {
+    change_map_ = change_map_.erase(key);
+
+  } else if (new_type == DocumentViewChange::Type::Removed &&
+             old_type == DocumentViewChange::Type::Modified) {
+    DocumentViewChange new_change{old.document(),
+                                  DocumentViewChange::Type::Removed};
+    change_map_ = change_map_.insert(key, new_change);
+
+  } else if (new_type == DocumentViewChange::Type::Added &&
+             old_type == DocumentViewChange::Type::Removed) {
+    DocumentViewChange new_change{change.document(),
+                                  DocumentViewChange::Type::Modified};
+    change_map_ = change_map_.insert(key, new_change);
+
+  } else {
+    // This includes these cases, which don't make sense:
+    // Added -> Added
+    // Removed -> Removed
+    // Modified -> Added
+    // Removed -> Modified
+    // Metadata -> Added
+    // Removed -> Metadata
+    HARD_FAIL("Unsupported combination of changes: %s after %s", new_type,
+              old_type);
+  }
+}
+
+std::vector<DocumentViewChange> DocumentViewChangeSet::GetChanges() const {
+  std::vector<DocumentViewChange> changes;
+  for (const auto& kv : change_map_) {
+    const DocumentViewChange& change = kv.second;
+    changes.push_back(change);
+  }
+  return changes;
+}
+
+std::string DocumentViewChangeSet::ToString() const {
+  return util::ToString(change_map_);
+}
+
+// ViewSnapshot
+
+ViewSnapshot::ViewSnapshot(Query query,
+                           DocumentSet documents,
+                           DocumentSet old_documents,
+                           std::vector<DocumentViewChange> document_changes,
+                           model::DocumentKeySet mutated_keys,
+                           bool from_cache,
+                           bool sync_state_changed,
+                           bool excludes_metadata_changes)
+    : query_{std::move(query)},
+      documents_{std::move(documents)},
+      old_documents_{std::move(old_documents)},
+      document_changes_{std::move(document_changes)},
+      mutated_keys_{std::move(mutated_keys)},
+      from_cache_{from_cache},
+      sync_state_changed_{sync_state_changed},
+      excludes_metadata_changes_{excludes_metadata_changes} {
+}
+
+ViewSnapshot ViewSnapshot::FromInitialDocuments(
+    Query query,
+    DocumentSet documents,
+    DocumentKeySet mutated_keys,
+    bool from_cache,
+    bool excludes_metadata_changes) {
+  std::vector<DocumentViewChange> view_changes;
+  for (const Document& doc : documents) {
+    view_changes.emplace_back(doc, DocumentViewChange::Type::Added);
+  }
+
+  DocumentSet old_documents(query.Comparator());
+  return ViewSnapshot{std::move(query),
+                      documents,
+                      old_documents,
+                      std::move(view_changes),
+                      std::move(mutated_keys),
+                      from_cache,
+                      /*sync_state_changed=*/true,
+                      excludes_metadata_changes};
+}
+
+const Query& ViewSnapshot::query() const {
+  return query_;
+}
+
+std::string ViewSnapshot::ToString() const {
+  return StringFormat(
+      "<ViewSnapshot query: %s documents: %s old_documents: %s changes: %s "
+      "from_cache: %s mutated_keys: %s sync_state_changed: %s "
+      "excludes_metadata_changes: %s>",
+      query_.ToString(), documents_.ToString(), old_documents_.ToString(),
+      util::ToString(document_changes()), from_cache(), mutated_keys().size(),
+      sync_state_changed(), excludes_metadata_changes());
+}
+
+std::ostream& operator<<(std::ostream& out, const ViewSnapshot& value) {
+  return out << value.ToString();
+}
+
+size_t ViewSnapshot::Hash() const {
+  // Note: We are omitting `mutated_keys_` from the hash, since we don't have a
+  // straightforward way to compute its hash value. Since `ViewSnapshot` is
+  // currently not stored in any dictionaries, this has no side effects.
+
+  return util::Hash(query(), documents(), old_documents(), document_changes(),
+                    from_cache(), sync_state_changed(),
+                    excludes_metadata_changes());
+}
+
+bool operator==(const ViewSnapshot& lhs, const ViewSnapshot& rhs) {
+  return lhs.query() == rhs.query() && lhs.documents() == rhs.documents() &&
+         lhs.old_documents() == rhs.old_documents() &&
+         lhs.document_changes() == rhs.document_changes() &&
+         lhs.from_cache() == rhs.from_cache() &&
+         lhs.mutated_keys() == rhs.mutated_keys() &&
+         lhs.sync_state_changed() == rhs.sync_state_changed() &&
+         lhs.excludes_metadata_changes() == rhs.excludes_metadata_changes();
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.h
new file mode 100644
index 0000000..2d6fe05
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/core/view_snapshot.h	
@@ -0,0 +1,188 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_CORE_VIEW_SNAPSHOT_H_
+#define FIRESTORE_CORE_SRC_CORE_VIEW_SNAPSHOT_H_
+
+#include <functional>
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/core/event_listener.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/immutable/sorted_map.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+/** A change to a single document's state within a view. */
+class DocumentViewChange {
+ public:
+  /**
+   * The types of changes that can happen to a document with respect to a view.
+   * NOTE: We sort document changes by their type, so the ordering of this enum
+   * is significant.
+   */
+  enum class Type { Removed = 0, Added, Modified, Metadata };
+
+  DocumentViewChange() = default;
+
+  DocumentViewChange(model::Document document, Type type);
+
+  const model::Document& document() const;
+  DocumentViewChange::Type type() const {
+    return type_;
+  }
+
+  std::string ToString() const;
+  size_t Hash() const;
+
+ private:
+  model::Document document_;
+  Type type_{};
+};
+
+bool operator==(const DocumentViewChange& lhs, const DocumentViewChange& rhs);
+
+/**
+ * The possible states a document can be in w.r.t syncing from local storage to
+ * the backend.
+ */
+enum class SyncState { None = 0, Local, Synced };
+
+/**
+ * A set of changes to docs in a query, merging duplicate events for the same
+ * doc.
+ */
+class DocumentViewChangeSet {
+ public:
+  /** Takes a new change and applies it to the set. */
+  void AddChange(DocumentViewChange&& change);
+
+  /** Returns the set of all changes tracked in this set. */
+  std::vector<DocumentViewChange> GetChanges() const;
+
+  std::string ToString() const;
+
+ private:
+  /** The set of all changes tracked so far, with redundant changes merged. */
+  immutable::SortedMap<model::DocumentKey, DocumentViewChange> change_map_;
+};
+
+/**
+ * A view snapshot is an immutable capture of the results of a query and the
+ * changes to them.
+ */
+class ViewSnapshot {
+ public:
+  ViewSnapshot(Query query,
+               model::DocumentSet documents,
+               model::DocumentSet old_documents,
+               std::vector<DocumentViewChange> document_changes,
+               model::DocumentKeySet mutated_keys,
+               bool from_cache,
+               bool sync_state_changed,
+               bool excludes_metadata_changes);
+
+  /**
+   * Returns a view snapshot as if all documents in the snapshot were
+   * added.
+   */
+  static ViewSnapshot FromInitialDocuments(Query query,
+                                           model::DocumentSet documents,
+                                           model::DocumentKeySet mutated_keys,
+                                           bool from_cache,
+                                           bool excludes_metadata_changes);
+
+  /** The query this view is tracking the results for. */
+  const Query& query() const;
+
+  /** The documents currently known to be results of the query. */
+  const model::DocumentSet& documents() const {
+    return documents_;
+  }
+
+  /** The documents of the last snapshot. */
+  const model::DocumentSet& old_documents() const {
+    return old_documents_;
+  }
+
+  /** The set of changes that have been applied to the documents. */
+  const std::vector<DocumentViewChange>& document_changes() const {
+    return document_changes_;
+  }
+
+  /** Whether any document in the snapshot was served from the local cache. */
+  bool from_cache() const {
+    return from_cache_;
+  }
+
+  /** Whether any document in the snapshot has pending local writes. */
+  bool has_pending_writes() const {
+    return !mutated_keys_.empty();
+  }
+
+  /** Whether the sync state changed as part of this snapshot. */
+  bool sync_state_changed() const {
+    return sync_state_changed_;
+  }
+
+  /** Whether this snapshot has been filtered to not include metadata changes */
+  bool excludes_metadata_changes() const {
+    return excludes_metadata_changes_;
+  }
+
+  /** The document in this snapshot that have unconfirmed writes. */
+  model::DocumentKeySet mutated_keys() const {
+    return mutated_keys_;
+  }
+
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& out, const ViewSnapshot& value);
+  size_t Hash() const;
+
+ private:
+  Query query_;
+
+  model::DocumentSet documents_;
+  model::DocumentSet old_documents_;
+  std::vector<DocumentViewChange> document_changes_;
+  model::DocumentKeySet mutated_keys_;
+
+  bool from_cache_ = false;
+  bool sync_state_changed_ = false;
+  bool excludes_metadata_changes_ = false;
+};
+
+using ViewSnapshotListener = std::unique_ptr<EventListener<ViewSnapshot>>;
+using ViewSnapshotSharedListener = std::shared_ptr<EventListener<ViewSnapshot>>;
+
+bool operator==(const ViewSnapshot& lhs, const ViewSnapshot& rhs);
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_CORE_VIEW_SNAPSHOT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/firestore_version.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/firestore_version.cc
new file mode 100644
index 0000000..57c4f08
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/firestore_version.cc	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/include/firebase/firestore/firestore_version.h"
+
+#ifndef FIRFirestore_VERSION
+#error \
+    "FIRFirestore_VERSION is not defined: add -DFIRFirestore_VERSION=... to the build invocation"  // NOLINT(whitespace/line_length)
+#endif
+
+namespace firebase {
+namespace firestore {
+
+// The following two macros supply the incantation so that the C
+// preprocessor does not try to parse the version as a floating
+// point number. See
+// https://www.guyrutenberg.com/2008/12/20/expanding-macros-into-string-constants-in-c/
+#define STR(x) STR_EXPAND(x)
+#define STR_EXPAND(x) #x
+
+const char* const kFirestoreVersionString = STR(FIRFirestore_VERSION);
+
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/geo_point.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/geo_point.cc
new file mode 100644
index 0000000..1d379d3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/geo_point.cc	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/include/firebase/firestore/geo_point.h"
+
+#include <cmath>
+#include <iostream>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+
+GeoPoint::GeoPoint(double latitude, double longitude)
+    : latitude_(latitude), longitude_(longitude) {
+  HARD_ASSERT(!std::isnan(latitude) && -90 <= latitude && latitude <= 90,
+              "Latitude must be in the range of [-90, 90]");
+  HARD_ASSERT(!std::isnan(longitude) && -180 <= longitude && longitude <= 180,
+              "Latitude must be in the range of [-180, 180]");
+}
+
+std::string GeoPoint::ToString() const {
+  return absl::StrCat("GeoPoint(latitude=", latitude_,
+                      ", longitude=", longitude_, ")");
+}
+
+std::ostream& operator<<(std::ostream& out, const GeoPoint& geo_point) {
+  return out << geo_point.ToString();
+}
+
+bool operator<(const GeoPoint& lhs, const GeoPoint& rhs) {
+  if (lhs.latitude() == rhs.latitude()) {
+    return lhs.longitude() < rhs.longitude();
+  } else {
+    return lhs.latitude() < rhs.latitude();
+  }
+}
+
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/append_only_list.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/append_only_list.h
new file mode 100644
index 0000000..9120426
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/append_only_list.h	
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_APPEND_ONLY_LIST_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_APPEND_ONLY_LIST_H_
+
+#include <algorithm>
+#include <iterator>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "absl/algorithm/container.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+
+/**
+ * An immutable list, optimized for appending.
+ *
+ * Each `push_back` creates a new instance and does not modify any that come
+ * before. If `push_back` is called on the last such instance, it will share
+ * the backing vector with the prior instance (though the prior instance will
+ * not perceive any change).
+ *
+ * This "chaining" behavior is what makes AppendOnlyList efficient, but it only
+ * applies when applied to the last link in the chain. When applied any instance
+ * that is not at the end, most operations will copy instead of chaining.
+ *
+ * Iterators over an AppendOnlyList are never invalidated.
+ */
+template <typename T>
+class AppendOnlyList {
+ public:
+  using iterator = const T*;
+  using const_iterator = const T*;
+  using value_type = T;
+
+  AppendOnlyList() = default;
+
+  AppendOnlyList(std::initializer_list<T> initializer_list)
+      : contents_(std::make_shared<std::vector<T>>(initializer_list)),
+        size_(initializer_list.size()) {
+  }
+
+  /**
+   * Returns a new AppendOnlyList that has reserved the given capacity in its
+   * backing vector, without actually lengthening the chain.
+   *
+   * This has a similar effect to std::vector::reserve, except that *this is
+   * not actually modified. Successive `push_back` operations until `size()`
+   * is equal to `capacity` are guaranteed to be O(1).
+   *
+   * Note that if this instance is not the end of the chain, then this forces
+   * a copy.
+   */
+  ABSL_MUST_USE_RESULT AppendOnlyList reserve(size_t capacity) const {
+    if (capacity <= size_) {
+      return *this;
+    }
+
+    // Create a the underlying vector with capacity reserved, but return the
+    // result with the current size. Reserving does not actually append anything
+    // to the underlying vector so size() shouldn't change.
+    std::shared_ptr<std::vector<T>> new_contents = PrepareForAppend(capacity);
+    return AppendOnlyList(std::move(new_contents), size_);
+  }
+
+  /**
+   * Creates a new AppendOnlyList with the given value appended to the end.
+   *
+   * Each `push_back` creates a new instance and appears not to modify any that
+   * come. If `push_back` is called on the last instance in a chain, it will
+   * share the backing vector with the prior instance.
+   *
+   * If `push_back` is called when this instance isn't the last instance in the
+   * chain, it will make a copy of all preceding elements in the chain and
+   * return a new chain suitable for further chained `push_back` operations.
+   */
+  ABSL_MUST_USE_RESULT AppendOnlyList push_back(const T& value) const {
+    size_t new_size = size_ + 1;
+    std::shared_ptr<std::vector<T>> new_contents = PrepareForAppend(new_size);
+
+    new_contents->push_back(value);
+    return AppendOnlyList(std::move(new_contents), new_size);
+  }
+
+  /**
+   * Creates a new AppendOnlyList with the given value appended to the end.
+   *
+   * @see `push_back(const T&)` for detailed discussion.
+   */
+  ABSL_MUST_USE_RESULT AppendOnlyList push_back(T&& value) const {
+    size_t new_size = size_ + 1;
+    std::shared_ptr<std::vector<T>> new_contents = PrepareForAppend(new_size);
+
+    new_contents->push_back(std::move(value));
+    return AppendOnlyList(std::move(new_contents), new_size);
+  }
+
+  /**
+   * Creates a new AppendOnlyList constructing a new value appended to the end.
+   *
+   * @see `push_back(const T&)` for detailed discussion.
+   */
+  template <typename... Args>
+  ABSL_MUST_USE_RESULT AppendOnlyList emplace_back(Args&&... args) const {
+    size_t new_size = size_ + 1;
+    std::shared_ptr<std::vector<T>> new_contents = PrepareForAppend(new_size);
+
+    new_contents->emplace_back(std::forward<Args>(args)...);
+    return AppendOnlyList(std::move(new_contents), new_size);
+  }
+
+  /**
+   * Creates a new AppendOnlyList with the final link in the chain removed.
+   *
+   * Note that the element isn't actually removed from the backing vector and
+   * it still constitutes the end of the chain. This means that any `push_back`
+   * on the resulting AppendOnlyList will result in a full copy.
+   *
+   * Calling pop_back() on an empty AppendOnlyList returns an empty
+   * AppendOnlyList.
+   */
+  ABSL_MUST_USE_RESULT AppendOnlyList pop_back() const {
+    if (size_ <= 1) {
+      return AppendOnlyList(nullptr, 0);
+    }
+
+    return AppendOnlyList(contents_, size_ - 1);
+  }
+
+  size_t size() const {
+    return size_;
+  }
+
+  size_t capacity() const {
+    return contents_ ? contents_->capacity() : 0;
+  }
+
+  bool empty() const {
+    return size_ == 0;
+  }
+
+  /**
+   * Returns an iterator to the beginning of the list. Iterators are never
+   * invalidated (so long as the container itself is valid).
+   */
+  const_iterator begin() const {
+    if (size_ == 0) {
+      return nullptr;
+    } else {
+      return contents_->data();
+    }
+  }
+
+  /**
+   * Returns an iterator that points to one past the end of the list. Iterators
+   * are never invalidated (so long as the container itself is valid).
+   */
+  const_iterator end() const {
+    if (size_ == 0) {
+      return nullptr;
+    } else {
+      return contents_->data() + size_;
+    }
+  }
+
+  /**
+   * Returns the first element of the list. Only valid when the list is not
+   * empty.
+   */
+  const T& front() const {
+    return *begin();
+  }
+
+  /**
+   * Returns the last element of the list. Only valid when the list is not
+   * empty.
+   */
+  const T& back() const {
+    return *(end() - 1);
+  }
+
+  const T& operator[](size_t pos) const {
+    return (*contents_)[pos];
+  }
+
+  friend bool operator==(const AppendOnlyList& lhs, const AppendOnlyList& rhs) {
+    return absl::c_equal(lhs, rhs);
+  }
+
+  friend bool operator!=(const AppendOnlyList& lhs, const AppendOnlyList& rhs) {
+    return !(lhs == rhs);
+  }
+
+ private:
+  AppendOnlyList(std::shared_ptr<std::vector<T>> contents, size_t size)
+      : contents_(std::move(contents)), size_(size) {
+  }
+
+  std::shared_ptr<std::vector<T>> PrepareForAppend(size_t new_size) const {
+    if (contents_ && size_ == contents_->size() &&
+        new_size <= contents_->capacity()) {
+      // If there's an existing vector, this instance points to the end, and
+      // can already accommodate what's required, there's nothing to do.
+      return contents_;
+    }
+
+    size_t min_capacity = new_size;
+    if (contents_) {
+      // if contents_->capacity() * 2 overflows, min_capacity will be larger.
+      min_capacity = std::max(min_capacity, contents_->capacity() * 2);
+    }
+
+    // min_capacity will be larger than the existing contents of this list so
+    // reserve that capacity copying in the current values. Copying from this
+    // and then reserving would cause two allocations, the first for exactly
+    // the current size and then another for min_capacity.
+    auto new_contents = std::make_shared<std::vector<T>>();
+    new_contents->reserve(min_capacity);
+    new_contents->insert(new_contents->begin(), begin(), end());
+    return new_contents;
+  }
+
+  // A shared vector. Sequential push_back operations will share the vector. May
+  // be nullptr when size_ == 0, but is not required to be null.
+  std::shared_ptr<std::vector<T>> contents_;
+
+  // size_ is not shared.
+  size_t size_ = 0;
+};
+
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_APPEND_ONLY_LIST_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/array_sorted_map.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/array_sorted_map.h
new file mode 100644
index 0000000..f019a38
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/array_sorted_map.h	
@@ -0,0 +1,364 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_ARRAY_SORTED_MAP_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_ARRAY_SORTED_MAP_H_
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/immutable/keys_view.h"
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/range.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+/**
+ * A bounded-size array that allocates its contents directly in itself. This
+ * saves a heap allocation when compared with std::vector (though std::vector
+ * can resize itself while FixedArray cannot).
+ *
+ * Unlike std::array, FixedArray keeps track of its size and grows up to the
+ * fixed_size limit. Inserting more elements than fixed_size will trigger an
+ * assertion failure.
+ *
+ * ArraySortedMap does not actually contain its array: it contains a shared_ptr
+ * to a FixedArray.
+ *
+ * @tparam T The type of an element in the array.
+ */
+template <typename T>
+class FixedArray {
+ public:
+  using size_type = SortedMapBase::size_type;
+  using array_type = std::array<T, SortedMapBase::kFixedSize>;
+  using iterator = typename array_type::iterator;
+  using const_iterator = typename array_type::const_iterator;
+
+  FixedArray() {
+  }
+
+  template <typename SourceIterator>
+  FixedArray(SourceIterator src_begin, SourceIterator src_end) {
+    append(src_begin, src_end);
+  }
+
+  /**
+   * Appends to this array, copying from the given src_begin up to but not
+   * including the src_end.
+   */
+  template <typename SourceIterator>
+  void append(SourceIterator src_begin, SourceIterator src_end) {
+    auto appending = static_cast<size_type>(src_end - src_begin);
+    auto new_size = size_ + appending;
+    HARD_ASSERT(new_size <= SortedMapBase::kFixedSize);
+
+    std::copy(src_begin, src_end, end());
+    size_ = new_size;
+  }
+
+  /**
+   * Appends a single value to the array.
+   */
+  void append(T&& value) {
+    size_type new_size = size_ + 1;
+    HARD_ASSERT(new_size <= SortedMapBase::kFixedSize);
+
+    *end() = std::move(value);
+    size_ = new_size;
+  }
+
+  const_iterator begin() const {
+    return contents_.begin();
+  }
+
+  const_iterator end() const {
+    return begin() + size_;
+  }
+
+  size_type size() const {
+    return size_;
+  }
+
+ private:
+  iterator begin() {
+    return contents_.begin();
+  }
+
+  iterator end() {
+    return begin() + size_;
+  }
+
+  array_type contents_;
+  size_type size_ = 0;
+};
+
+/**
+ * ArraySortedMap is a value type containing a map. It is immutable, but has
+ * methods to efficiently create new maps that are mutations of it.
+ */
+template <typename K, typename V, typename C = util::Comparator<K>>
+class ArraySortedMap : public SortedMapBase {
+ public:
+  /**
+   * The type of the entries stored in the map.
+   */
+  using value_type = std::pair<K, V>;
+
+  /**
+   * The type of the fixed-size array containing entries of value_type.
+   */
+  using array_type = FixedArray<value_type>;
+  using const_iterator = typename array_type::const_iterator;
+  using const_key_iterator = util::iterator_first<const_iterator>;
+
+  using array_pointer = std::shared_ptr<const array_type>;
+
+  /**
+   * Creates an empty ArraySortedMap.
+   */
+  explicit ArraySortedMap(const C& comparator = C())
+      : array_{EmptyArray()}, comparator_{comparator} {
+  }
+
+  /**
+   * Creates an ArraySortedMap containing the given entries.
+   */
+  ArraySortedMap(std::initializer_list<value_type> entries,
+                 const C& comparator = C())
+      : array_{SortedArray(entries, comparator)}, comparator_{comparator} {
+  }
+
+  /** Returns true if the map contains no elements. */
+  bool empty() const {
+    return size() == 0;
+  }
+
+  /** Returns the number of items in this map. */
+  size_type size() const {
+    return array_->size();
+  }
+
+  const C& comparator() const {
+    return comparator_;
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key-value pair added or
+   * updated.
+   *
+   * @param key The key to insert/update.
+   * @param value The value to associate with the key.
+   * @return A new dictionary with the added/updated value.
+   */
+  ArraySortedMap insert(const K& key, const V& value) const {
+    const_iterator current_end = end();
+    const_iterator pos = lower_bound(key);
+    bool replacing_entry = false;
+
+    if (pos != current_end) {
+      // lower_bound found an entry where pos->first >= pair.first. Reversing
+      // the argument order here tests pair.first < pos->first.
+      auto cmp = comparator_.Compare(key, pos->first);
+      replacing_entry = cmp == util::ComparisonResult::Same;
+      if (replacing_entry && value == pos->second) {
+        return *this;
+      }
+    }
+
+    // Copy the segment before the found position. If not found, this is
+    // everything.
+    auto copy = std::make_shared<array_type>(begin(), pos);
+
+    // Copy the value to be inserted.
+    copy->append({key, value});
+
+    if (replacing_entry) {
+      // Skip the thing at pos because it compares the same as the pair above.
+      copy->append(pos + 1, current_end);
+    } else {
+      copy->append(pos, current_end);
+    }
+    return wrap(copy);
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key removed from it.
+   *
+   * @param key The key to remove.
+   * @return A new dictionary without that value.
+   */
+  ArraySortedMap erase(const K& key) const {
+    const_iterator current_end = end();
+    const_iterator pos = find(key);
+    if (pos == current_end) {
+      return *this;
+    } else if (size() <= 1) {
+      // If the key was found and it's the last entry, removing it would make
+      // the result empty.
+      return wrap(EmptyArray());
+    } else {
+      auto copy = std::make_shared<array_type>(begin(), pos);
+      copy->append(pos + 1, current_end);
+      return wrap(copy);
+    }
+  }
+
+  bool contains(const K& key) const {
+    return find(key) != end();
+  }
+
+  /**
+   * Finds a value in the map.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key, or end() if
+   *     not found.
+   */
+  const_iterator find(const K& key) const {
+    return std::find_if(begin(), end(), [&](const std::pair<K, V>& kv) {
+      return util::Same(comparator_.Compare(key, kv.first));
+    });
+  }
+
+  /**
+   * Finds the index of the given key in the map.
+   *
+   * @param key The key to look up.
+   * @return The index of the entry containing the key, or npos if not found.
+   */
+  size_type find_index(const K& key) const {
+    auto found = find(key);
+    return found == end() ? npos : static_cast<size_type>(found - begin());
+  }
+
+  /**
+   * Finds the first entry in the map containing a key greater than or equal
+   * to the given key.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key or the next
+   *     largest key. Can return end() if all keys in the map are less than the
+   *     requested key.
+   */
+  const_iterator lower_bound(const K& key) const {
+    return std::lower_bound(
+        begin(), end(), key, [&](const std::pair<K, V>& el, const K& key) {
+          return util::Ascending(comparator_.Compare(el.first, key));
+        });
+  }
+
+  const_iterator min() const {
+    return begin();
+  }
+
+  const_iterator max() const {
+    if (empty()) {
+      return end();
+    }
+
+    return end() - 1;
+  }
+
+  /**
+   * Returns an iterator pointing to the first entry in the map. If there are
+   * no entries in the map, begin() == end().
+   */
+  const_iterator begin() const {
+    return array_->begin();
+  }
+
+  /**
+   * Returns an iterator pointing past the last entry in the map.
+   */
+  const_iterator end() const {
+    return array_->end();
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted.
+   */
+  const util::range<const_key_iterator> keys() const {
+    return KeysView(*this);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given key.
+   */
+  const util::range<const_key_iterator> keys_from(const K& key) const {
+    return KeysViewFrom(*this, key);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given start_key and less
+   * than the given end_key.
+   */
+  const util::range<const_key_iterator> keys_in(const K& start_key,
+                                                const K& end_key) const {
+    return impl::KeysViewIn(*this, start_key, end_key, comparator());
+  }
+
+ private:
+  static array_pointer EmptyArray() {
+    static const array_pointer* kEmptyArray = [] {
+      auto array = new array_type();
+      return new std::shared_ptr<const array_type>(array);
+    }();
+    return *kEmptyArray;
+  }
+
+  static array_pointer SortedArray(std::initializer_list<value_type> entries,
+                                   const C& comparator) {
+    std::vector<value_type> sorted{entries.begin(), entries.end()};
+    std::sort(
+        sorted.begin(), sorted.end(),
+        [&comparator](const value_type& lhs, const value_type& rhs) {
+          return util::Ascending(comparator.Compare(lhs.first, rhs.first));
+        });
+    return std::make_shared<const array_type>(sorted.begin(), sorted.end());
+  }
+
+  ArraySortedMap(const array_pointer& array, const C& comparator) noexcept
+      : array_{array}, comparator_{comparator} {
+  }
+
+  ArraySortedMap wrap(const array_pointer& array) const noexcept {
+    return ArraySortedMap{array, comparator_};
+  }
+
+  array_pointer array_;
+  C comparator_;
+};
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_ARRAY_SORTED_MAP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/keys_view.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/keys_view.h
new file mode 100644
index 0000000..fad8510
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/keys_view.h	
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_KEYS_VIEW_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_KEYS_VIEW_H_
+
+#include <utility>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/iterator_adaptors.h"
+#include "Firestore/core/src/util/range.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+template <typename Iterator>
+using KeysRange = util::range<util::iterator_first<Iterator>>;
+
+template <typename Iterator>
+KeysRange<Iterator> MakeKeysRange(Iterator begin, Iterator end) {
+  auto keys_begin = util::make_iterator_first(begin);
+  auto keys_end = util::make_iterator_first(end);
+  return util::make_range(keys_begin, keys_end);
+}
+
+/**
+ * Returns a view of the keys of the given key-value range.
+ */
+template <typename Range>
+auto KeysView(const Range& range) -> KeysRange<decltype(std::begin(range))> {
+  return MakeKeysRange(std::begin(range), std::end(range));
+}
+
+template <typename Range, typename K>
+auto KeysViewFrom(const Range& range, const K& key)
+    -> KeysRange<decltype(range.lower_bound(key))> {
+  auto keys_begin = util::make_iterator_first(range.lower_bound(key));
+  auto keys_end = util::make_iterator_first(std::end(range));
+  return util::make_range(keys_begin, keys_end);
+}
+
+/**
+ * Returns a view of keys of the given key-value range that are greater than or
+ * equal to the given start_key and less than the given end_key.
+ *
+ * If `end_key` is less than or equal to `start_key`, creates empty range.
+ */
+template <typename Range, typename K, typename C>
+auto KeysViewIn(const Range& range,
+                const K& start_key,
+                const K& end_key,
+                const C& comparator)
+    -> KeysRange<decltype(range.lower_bound(start_key))> {
+  // Forward iterators can't ever reach the end if the end is behind the start:
+  // they just keep incrementing until address space runs out. Adjust the range
+  // accordingly.
+  bool empty_range = !util::Ascending(comparator.Compare(start_key, end_key));
+  if (empty_range) {
+    return MakeKeysRange(std::end(range), std::end(range));
+  }
+
+  auto range_begin = range.lower_bound(start_key);
+  auto range_end = range.lower_bound(end_key);
+  return MakeKeysRange(std::move(range_begin), std::move(range_end));
+}
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_KEYS_VIEW_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node.h
new file mode 100644
index 0000000..fdcb82b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node.h	
@@ -0,0 +1,467 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_H_
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/immutable/llrb_node_iterator.h"
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/util/comparison.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+/**
+ * A Color of a tree node in a red-black tree.
+ */
+enum Color : unsigned int {
+  Black,
+  Red,
+};
+
+/**
+ * LlrbNode is a node in a TreeSortedMap.
+ */
+template <typename K, typename V>
+class LlrbNode : public SortedMapBase {
+ public:
+  using first_type = K;
+  using second_type = V;
+
+  /**
+   * The type of the entries stored in the map.
+   */
+  using value_type = std::pair<K, V>;
+  using const_iterator = LlrbNodeIterator<LlrbNode<K, V>>;
+
+  /**
+   * Constructs an empty node.
+   */
+  LlrbNode() : LlrbNode{EmptyRep()} {
+  }
+
+  /** Returns true if this is an empty node--a leaf node in the tree. */
+  bool empty() const {
+    return size() == 0;
+  }
+
+  /** Returns the number of elements at this node or beneath it in the tree. */
+  size_type size() const {
+    return rep_->size_;
+  }
+
+  /** Returns true if this node is red (as opposed to black). */
+  bool red() const {
+    return static_cast<bool>(rep_->color_);
+  }
+
+  const value_type& entry() const {
+    return rep_->entry_;
+  }
+  const K& key() const {
+    return entry().first;
+  }
+  const V& value() const {
+    return entry().second;
+  }
+  Color color() const {
+    return static_cast<Color>(rep_->color_);
+  }
+  const LlrbNode& left() const {
+    return rep_->left_;
+  }
+  const LlrbNode& right() const {
+    return rep_->right_;
+  }
+
+  /** Returns a tree node with the given key-value pair set/updated. */
+  template <typename Comparator>
+  LlrbNode insert(const K& key,
+                  const V& value,
+                  const Comparator& comparator) const;
+
+  template <typename Comparator>
+  LlrbNode erase(const K& key, const Comparator& comparator) const;
+
+  const LlrbNode& min() const {
+    const LlrbNode* node = this;
+    while (!node->left().empty()) {
+      node = &node->left();
+    }
+    return *node;
+  }
+
+  const LlrbNode& max() const {
+    const LlrbNode* node = this;
+    while (!node->right().empty()) {
+      node = &node->right();
+    }
+    return *node;
+  }
+
+ private:
+  struct Rep {
+    Rep(value_type&& entry,
+        size_type color,
+        size_type size,
+        LlrbNode left,
+        LlrbNode right)
+        : entry_{std::move(entry)},
+          color_{color},
+          size_{size},
+          left_{std::move(left)},
+          right_{std::move(right)} {
+    }
+
+    Rep(value_type&& entry, size_type color, LlrbNode left, LlrbNode right)
+        : entry_{std::move(entry)},
+          color_{color},
+          size_{left.size() + 1 + right.size()},
+          left_{std::move(left)},
+          right_{std::move(right)} {
+    }
+
+    value_type entry_;
+
+    // Store the color in the high bit of the size to save memory.
+    size_type color_ : 1;
+    size_type size_ : 31;
+
+    LlrbNode left_;
+    LlrbNode right_;
+  };
+
+  explicit LlrbNode(Rep rep) : rep_{std::make_shared<Rep>(std::move(rep))} {
+  }
+
+  explicit LlrbNode(const std::shared_ptr<Rep>& rep) : rep_{rep} {
+  }
+
+  explicit LlrbNode(std::shared_ptr<Rep>&& rep) : rep_{std::move(rep)} {
+  }
+
+  /**
+   * Returns a shared Empty node, to cut down on allocations in the base case.
+   */
+  static const std::shared_ptr<Rep>& EmptyRep() {
+    static const std::shared_ptr<Rep>* empty_rep = [] {
+      auto rep = new Rep{std::pair<K, V>{}, Color::Black,
+                         /* size= */ 0u, LlrbNode{nullptr}, LlrbNode{nullptr}};
+      auto empty = new std::shared_ptr<Rep>{rep};
+
+      // Set up the empty Rep such that you can traverse infinitely down left
+      // and right links.
+      (*empty)->left_.rep_ = *empty;
+      (*empty)->right_.rep_ = *empty;
+      return empty;
+    }();
+    return *empty_rep;
+  }
+
+  /**
+   * Creates a new copy of this node, duplicating the Rep but without
+   * duplicating the left_ and right_ children.
+   */
+  LlrbNode Clone() const {
+    return LlrbNode{*rep_};
+  }
+
+  void set_size(size_type size) {
+    rep_->size_ = size;
+  }
+
+  void set_entry(const value_type& entry) {
+    rep_->entry_ = entry;
+  }
+  void set_entry(value_type&& entry) {
+    rep_->entry_ = std::move(entry);
+  }
+  void set_value(const V& value) {
+    rep_->entry_.second = value;
+  }
+  void set_color(size_type color) {
+    rep_->color_ = color;
+  }
+  void set_left(const LlrbNode& left) {
+    rep_->left_ = left;
+  }
+  void set_left(LlrbNode&& left) {
+    rep_->left_ = std::move(left);
+  }
+  void set_right(const LlrbNode& right) {
+    rep_->right_ = right;
+  }
+  void set_right(LlrbNode&& right) {
+    rep_->right_ = std::move(right);
+  }
+
+  template <typename Comparator>
+  LlrbNode InnerInsert(const K& key,
+                       const V& value,
+                       const Comparator& comparator) const;
+
+  template <typename Comparator>
+  LlrbNode InnerErase(const K& key, const Comparator& comparator) const;
+
+  void FixUp();
+  void FixRootColor();
+
+  void RotateLeft();
+  void RotateRight();
+  void FlipColor();
+
+  void RemoveMin();
+  void MoveRedLeft();
+  void MoveRedRight();
+
+  size_type OppositeColor() const noexcept {
+    return rep_->color_ == Color::Red ? Color::Black : Color::Red;
+  }
+
+  std::shared_ptr<Rep> rep_;
+};
+
+template <typename K, typename V>
+template <typename Comparator>
+LlrbNode<K, V> LlrbNode<K, V>::insert(const K& key,
+                                      const V& value,
+                                      const Comparator& comparator) const {
+  LlrbNode root = InnerInsert(key, value, comparator);
+  root.FixRootColor();
+  return root;
+}
+
+template <typename K, typename V>
+template <typename Comparator>
+LlrbNode<K, V> LlrbNode<K, V>::InnerInsert(const K& key,
+                                           const V& value,
+                                           const Comparator& comparator) const {
+  if (empty()) {
+    return LlrbNode{Rep{{key, value}, Color::Red, LlrbNode{}, LlrbNode{}}};
+  }
+
+  // Inserting is going to result in a copy but we can save some allocations by
+  // creating the copy once and fixing that up, rather than copying and
+  // re-copying the result.
+  LlrbNode result = Clone();
+
+  const K& this_key = this->key();
+  util::ComparisonResult cmp = comparator.Compare(this_key, key);
+  if (cmp == util::ComparisonResult::Descending) {
+    result.set_left(result.left().InnerInsert(key, value, comparator));
+    result.FixUp();
+
+  } else if (cmp == util::ComparisonResult::Ascending) {
+    result.set_right(result.right().InnerInsert(key, value, comparator));
+    result.FixUp();
+
+  } else {
+    // keys are equal so update the value.
+    result.set_value(value);
+  }
+  return result;
+}
+
+template <typename K, typename V>
+template <typename Comparator>
+LlrbNode<K, V> LlrbNode<K, V>::erase(const K& key,
+                                     const Comparator& comparator) const {
+  LlrbNode root = InnerErase(key, comparator);
+  root.FixRootColor();
+  return root;
+}
+
+template <typename K, typename V>
+template <typename Comparator>
+LlrbNode<K, V> LlrbNode<K, V>::InnerErase(const K& key,
+                                          const Comparator& comparator) const {
+  if (empty()) {
+    // Empty node already frozen
+    return LlrbNode{};
+  }
+
+  LlrbNode n = Clone();
+
+  if (util::Ascending(comparator.Compare(key, n.key()))) {
+    if (!n.left().empty() && !n.left().red() && !n.left().left().red()) {
+      n.MoveRedLeft();
+    }
+    n.set_left(n.left().InnerErase(key, comparator));
+
+  } else {
+    if (n.left().red()) {
+      n.RotateRight();
+    }
+
+    if (!n.right().empty() && !n.right().red() && !n.right().left().red()) {
+      n.MoveRedRight();
+    }
+
+    if (util::Same(comparator.Compare(key, n.key()))) {
+      if (n.right().empty()) {
+        return LlrbNode{};
+
+      } else {
+        // Move the minimum node from the right subtree in place of this node.
+        LlrbNode smallest = n.right().min();
+        LlrbNode new_right = n.right().Clone();
+        new_right.RemoveMin();
+
+        n.set_entry(smallest.entry());
+        n.set_right(std::move(new_right));
+      }
+    } else {
+      n.set_right(n.right().InnerErase(key, comparator));
+    }
+  }
+  n.FixUp();
+  return n;
+}
+
+template <typename K, typename V>
+void LlrbNode<K, V>::FixUp() {
+  set_size(left().size() + 1 + right().size());
+
+  if (right().red() && !left().red()) {
+    RotateLeft();
+  }
+  if (left().red() && left().left().red()) {
+    RotateRight();
+  }
+  if (left().red() && right().red()) {
+    FlipColor();
+  }
+}
+
+/**
+ * Fixes the root node so its color is always black.
+ *
+ * This change is safe because a red `root` must be a new root:
+ *   * If the key is not found, InnerErase returns an existing root, but
+ *     existing roots will already be black (by the invariant).
+ *   * If the key is found, InnerErase returns a new root, which is safe to
+ *     modify.
+ */
+template <typename K, typename V>
+void LlrbNode<K, V>::FixRootColor() {
+  if (red()) {
+    rep_->color_ = Color::Black;
+  }
+}
+
+template <typename K, typename V>
+void LlrbNode<K, V>::RemoveMin() {
+  // If the left node is empty then the right node must be empty (because the
+  // tree is left-leaning) and this node must be the minimum.
+  if (left().empty()) {
+    *this = LlrbNode{};
+    return;
+  }
+
+  if (!left().red() && !left().left().red()) {
+    MoveRedLeft();
+  }
+
+  LlrbNode new_left = left().Clone();
+  new_left.RemoveMin();
+  set_left(std::move(new_left));
+  FixUp();
+}
+
+template <typename K, typename V>
+void LlrbNode<K, V>::MoveRedLeft() {
+  FlipColor();
+  if (right().left().red()) {
+    LlrbNode new_right = right().Clone();
+    new_right.RotateRight();
+    set_right(std::move(new_right));
+    RotateLeft();
+    FlipColor();
+  }
+}
+
+template <typename K, typename V>
+void LlrbNode<K, V>::MoveRedRight() {
+  FlipColor();
+  if (left().left().red()) {
+    RotateRight();
+    FlipColor();
+  }
+}
+
+/* Rotates left:
+ *
+ *      X              R
+ *    /   \          /   \
+ *   L     R   =>   X    RR
+ *        / \      / \
+ *       RL RR     L RL
+ */
+template <typename K, typename V>
+void LlrbNode<K, V>::RotateLeft() {
+  LlrbNode new_left{
+      Rep{std::move(rep_->entry_), Color::Red, left(), right().left()}};
+
+  // size_ and color remain unchanged after a rotation.
+  set_entry(right().entry());
+  set_left(std::move(new_left));
+  set_right(right().right());
+}
+
+/* Rotates right:
+ *
+ *      X              L
+ *    /   \          /   \
+ *   L     R   =>   LL    X
+ *  / \                  / \
+ * LL LR                LR R
+ */
+template <typename K, typename V>
+void LlrbNode<K, V>::RotateRight() {
+  LlrbNode new_right{
+      Rep{std::move(rep_->entry_), Color::Red, left().right(), right()}};
+
+  // size_ remains unchanged after a rotation. Preserve color too.
+  set_entry(left().entry());
+  set_left(left().left());
+  set_right(std::move(new_right));
+}
+
+template <typename K, typename V>
+void LlrbNode<K, V>::FlipColor() {
+  LlrbNode new_left = left().Clone();
+  new_left.set_color(left().OppositeColor());
+
+  LlrbNode new_right = right().Clone();
+  new_right.set_color(right().OppositeColor());
+
+  // Preserve contents_ and size_
+  set_color(OppositeColor());
+  set_left(std::move(new_left));
+  set_right(std::move(new_right));
+}
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node_iterator.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node_iterator.h
new file mode 100644
index 0000000..170ff9c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/llrb_node_iterator.h	
@@ -0,0 +1,215 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_ITERATOR_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_ITERATOR_H_
+
+#include <iterator>
+#include <stack>
+#include <utility>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+/**
+ * A forward iterator for traversing LlrbNodes. LlrbNodes represent the nodes
+ * in a tree implementing a sorted map so iterating with LlrbNodeIterator is
+ * an in-order traversal of the map.
+ *
+ * ## Complexity
+ *
+ * LlrbNode is an immutable tree, where mutations create new trees without
+ * invalidating any of the old instances. This means the tree cannot contain
+ * parent pointers and thus this iterator implementation must keep an explicit
+ * stack.
+ *
+ * For an underlying tree of size `n`:
+ *
+ *   * LlrbNodeIterator uses `O(lg(n))` memory for its stack, and
+ *   * incrementing an iterator is an `O(lg(n))` operation.
+ *
+ * ## Invalidation and Comparison
+ *
+ * LlrbNodeIterators compare based on the identity of the nodes themselves,
+ * not based on the values of the keys in the nodes. When adding and removing
+ * the same key and iterator obtained before and after will not compare equal.
+ *
+ * LlrbNodeIterators are not invalidated in any conventional sense because
+ * mutations of the underlying tree create new trees. Together this means that
+ * any given version of the tree can be iterated over from the same iterator
+ * repeatedly, but a "mutable view" of the tree kept by replacing the pointer
+ * to the root is effectively invalidated on each mutation.
+ *
+ * Note: LlrbNodeIterator does not extend the lifetime of its underlying tree.
+ */
+template <typename N>
+class LlrbNodeIterator {
+ public:
+  using node_type = N;
+  using key_type = typename node_type::first_type;
+
+  using stack_type = std::stack<const node_type*>;
+
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = typename node_type::value_type;
+
+  using pointer = typename node_type::value_type const*;
+  using reference = typename node_type::value_type const&;
+  using difference_type = std::ptrdiff_t;
+
+  explicit LlrbNodeIterator(stack_type&& stack) : stack_(std::move(stack)) {
+  }
+
+  /**
+   * Constructs an iterator starting at the first node in the iteration
+   * sequence of the tree represented by the given root node (i.e. it points at
+   * the left-most node).
+   */
+  static LlrbNodeIterator Begin(const node_type* root) {
+    stack_type stack;
+    AccumulateLeft(root, &stack);
+    return LlrbNodeIterator{std::move(stack)};
+  }
+
+  /**
+   * Constructs an iterator pointing at the end of the iteration sequence of the
+   * tree pointed to by the given node (i.e. one past the right-most node)
+   */
+  static LlrbNodeIterator End() {
+    return LlrbNodeIterator{stack_type{}};
+  }
+
+  // Default constructor to conform to the requirements of ForwardIterator
+  LlrbNodeIterator() {
+  }
+
+  /**
+   * Constructs an iterator pointing to the first node whose key is not less
+   * than the given key. If the key is in the tree then the lower bound will be
+   * the node containing the key. If the key is not in the tree, the lower bound
+   * will the first node greater than the key. If all nodes in the tree are less
+   * than the given key, returns an equivalent to `End()`.
+   */
+  template <typename C>
+  static LlrbNodeIterator LowerBound(const node_type* root,
+                                     const key_type& key,
+                                     const C& comparator) {
+    stack_type stack;
+
+    const node_type* node = root;
+    while (!node->empty()) {
+      util::ComparisonResult cmp = comparator.Compare(key, node->key());
+      if (cmp == util::ComparisonResult::Same) {
+        // Found exactly what we're looking for so we're done.
+        stack.push(node);
+        return LlrbNodeIterator{std::move(stack)};
+
+      } else if (cmp == util::ComparisonResult::Ascending) {
+        // key < node.key (for the forward direction)
+        stack.push(node);
+        node = &node->left();
+      } else {
+        // key > node.key (for the forward direction). Don't put this in the
+        // stack because we don't need to revisit it in the iteration order.
+        node = &node->right();
+      }
+    }
+
+    return LlrbNodeIterator{std::move(stack)};
+  }
+
+  /**
+   * Returns true if this iterator points at the end of the iteration sequence.
+   */
+  bool is_end() const {
+    return stack_.empty();
+  }
+
+  /**
+   * Returns the address of the entry in the node that this iterator points to.
+   * This can only be called if `end()` is false.
+   */
+  pointer get() const {
+    HARD_ASSERT(!is_end());
+    return &(stack_.top()->entry());
+  }
+
+  reference operator*() const {
+    return *get();
+  }
+
+  pointer operator->() const {
+    return get();
+  }
+
+  LlrbNodeIterator& operator++() {
+    HARD_ASSERT(!is_end());
+
+    // Pop the stack, moving the currently pointed to node to the parent.
+    const node_type* node = stack_.top();
+    stack_.pop();
+
+    // If the popped node has a right subtree that has to precede the parent in
+    // the iteration order so push those on.
+    node = &node->right();
+    AccumulateLeft(node, &stack_);
+
+    return *this;
+  }
+
+  LlrbNodeIterator operator++(int /*unused*/) {
+    LlrbNodeIterator result = *this;
+    ++*this;
+    return result;
+  }
+
+  friend bool operator==(const LlrbNodeIterator& a, const LlrbNodeIterator& b) {
+    if (a.is_end()) {
+      return b.is_end();
+    } else if (b.is_end()) {
+      return false;
+    } else {
+      const key_type& left_key = a.get()->first;
+      const key_type& right_key = b.get()->first;
+      return left_key == right_key;
+    }
+  }
+
+  bool operator!=(const LlrbNodeIterator& b) const {
+    return !(*this == b);
+  }
+
+ private:
+  static void AccumulateLeft(const node_type* node, stack_type* stack) {
+    for (; !node->empty(); node = &node->left()) {
+      stack->push(node);
+    }
+  }
+
+  stack_type stack_;
+};
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_LLRB_NODE_ITERATOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.cc
new file mode 100644
index 0000000..0350172
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.cc	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/immutable/sorted_container.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+
+// Define external storage for constants:
+constexpr SortedContainer::size_type SortedContainer::npos;
+constexpr SortedMapBase::size_type SortedMapBase::kFixedSize;
+
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.h
new file mode 100644
index 0000000..f2cf1d7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_container.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_CONTAINER_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_CONTAINER_H_
+
+#include <cstdint>
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+
+/**
+ * A base class for implementing immutable sorted containers, containing types
+ * and constants that don't depend upon the template parameters to the main
+ * class.
+ *
+ * Note that this exists as a base class rather than as just a namespace in
+ * order to make it possible for users of the SortedMap classes to avoid needing
+ * to declare storage for each instantiation of the template.
+ */
+class SortedContainer {
+ public:
+  /**
+   * The type of size() methods on immutable collections. Note:
+   *   * This is not size_t specifically to save space in the TreeSortedMap
+   *     implementation.
+   *   * This remains unsigned for straightforward casting to size_t.
+   */
+  using size_type = uint32_t;
+
+  /**
+   * A sentinel return value that indicates not found. Functionally similar to
+   * std::string::npos.
+   */
+  static constexpr size_type npos = static_cast<size_type>(-1);
+};
+
+/**
+ * A base class for implementing sorted maps, containing types and constants
+ * that don't depend upon the template parameters to the main class.
+ *
+ * Note that this exists as a base class rather than as just a namespace in
+ * order to make it possible for users of the SortedMap classes to avoid needing
+ * to declare storage for each instantiation of the template.
+ */
+class SortedMapBase : public SortedContainer {
+ public:
+  /**
+   * The maximum size of an ArraySortedMap.
+   *
+   * This is the size threshold where we use a tree backed sorted map instead of
+   * an array backed sorted map. This is a more or less arbitrary chosen value,
+   * that was chosen to be large enough to fit most of object kind of Firebase
+   * data, but small enough to not notice degradation in performance for
+   * inserting and lookups. Feel free to empirically determine this constant,
+   * but don't expect much gain in real world performance.
+   */
+  static constexpr size_type kFixedSize = 25;
+};
+
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_CONTAINER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map.h
new file mode 100644
index 0000000..7cf0a5b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map.h	
@@ -0,0 +1,394 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_H_
+
+#include <utility>
+
+#include "Firestore/core/src/immutable/array_sorted_map.h"
+#include "Firestore/core/src/immutable/keys_view.h"
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/immutable/sorted_map_iterator.h"
+#include "Firestore/core/src/immutable/tree_sorted_map.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "absl/base/attributes.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+
+/**
+ * SortedMap is a value type containing a map. It is immutable, but
+ * has methods to efficiently create new maps that are mutations of it.
+ */
+template <typename K, typename V, typename C = util::Comparator<K>>
+class SortedMap : public SortedMapBase {
+ public:
+  using key_type = K;
+  using mapped_type = V;
+  /** The type of the entries stored in the map. */
+  using value_type = std::pair<K, V>;
+  using array_type = impl::ArraySortedMap<K, V, C>;
+  using tree_type = impl::TreeSortedMap<K, V, C>;
+
+  using const_iterator = impl::SortedMapIterator<
+      value_type,
+      typename impl::FixedArray<value_type>::const_iterator,
+      typename impl::LlrbNode<K, V>::const_iterator>;
+
+  using const_key_iterator = util::iterator_first<const_iterator>;
+
+  /**
+   * Creates an empty SortedMap.
+   */
+  explicit SortedMap(const C& comparator = {})
+      : SortedMap{array_type{comparator}} {
+  }
+
+  /**
+   * Creates an SortedMap containing the given entries.
+   */
+  SortedMap(std::initializer_list<value_type> entries,
+            const C& comparator = {}) {
+    if (entries.size() <= kFixedSize) {
+      tag_ = Tag::Array;
+      new (&array_) array_type{entries, comparator};
+    } else {
+      new (&tree_) tree_type{tree_type::Create(entries, comparator)};
+    }
+  }
+
+  SortedMap(const SortedMap& other) : tag_{other.tag_} {
+    switch (tag_) {
+      case Tag::Array:
+        new (&array_) array_type{other.array_};
+        break;
+      case Tag::Tree:
+        new (&tree_) tree_type{other.tree_};
+        break;
+    }
+  }
+
+  SortedMap(SortedMap&& other) noexcept : tag_{other.tag_} {
+    switch (tag_) {
+      case Tag::Array:
+        new (&array_) array_type{std::move(other.array_)};
+        break;
+      case Tag::Tree:
+        new (&tree_) tree_type{std::move(other.tree_)};
+        break;
+    }
+  }
+
+  ~SortedMap() {
+    switch (tag_) {
+      case Tag::Array:
+        array_.~ArraySortedMap();
+        break;
+      case Tag::Tree:
+        tree_.~TreeSortedMap();
+        break;
+    }
+  }
+
+  SortedMap& operator=(const SortedMap& other) {
+    if (tag_ == other.tag_) {
+      switch (tag_) {
+        case Tag::Array:
+          array_ = other.array_;
+          break;
+        case Tag::Tree:
+          tree_ = other.tree_;
+          break;
+      }
+    } else {
+      this->~SortedMap();
+      new (this) SortedMap{other};
+    }
+    return *this;
+  }
+
+  SortedMap& operator=(SortedMap&& other) noexcept {
+    if (tag_ == other.tag_) {
+      switch (tag_) {
+        case Tag::Array:
+          array_ = std::move(other.array_);
+          break;
+        case Tag::Tree:
+          tree_ = std::move(other.tree_);
+          break;
+      }
+    } else {
+      this->~SortedMap();
+      new (this) SortedMap{std::move(other)};
+    }
+    return *this;
+  }
+
+  /** Returns true if the map contains no elements. */
+  bool empty() const {
+    switch (tag_) {
+      case Tag::Array:
+        return array_.empty();
+      case Tag::Tree:
+        return tree_.empty();
+    }
+    UNREACHABLE();
+  }
+
+  /** Returns the number of items in this map. */
+  size_type size() const {
+    switch (tag_) {
+      case Tag::Array:
+        return array_.size();
+      case Tag::Tree:
+        return tree_.size();
+    }
+    UNREACHABLE();
+  }
+
+  const C& comparator() const {
+    switch (tag_) {
+      case Tag::Array:
+        return array_.comparator();
+      case Tag::Tree:
+        return tree_.comparator();
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key-value pair added or
+   * updated.
+   *
+   * @param key The key to insert/update.
+   * @param value The value to associate with the key.
+   * @return A new dictionary with the added/updated value.
+   */
+  ABSL_MUST_USE_RESULT SortedMap insert(const K& key, const V& value) const {
+    switch (tag_) {
+      case Tag::Array:
+        if (array_.size() >= kFixedSize) {
+          // Strictly speaking this conversion is more eager than it needs to
+          // be since we could be replacing an existing key. However, the
+          // benefit of using the array for small maps doesn't really depend on
+          // exactly where this cut-off happens and just unconditionally
+          // converting if the next insertion could overflow keeps things
+          // simpler.
+          tree_type tree = tree_type::Create(array_, comparator());
+          return SortedMap{tree.insert(key, value)};
+        } else {
+          return SortedMap{array_.insert(key, value)};
+        }
+      case Tag::Tree:
+        return SortedMap{tree_.insert(key, value)};
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key removed from it.
+   *
+   * @param key The key to remove.
+   * @return A new map without that value.
+   */
+  ABSL_MUST_USE_RESULT SortedMap erase(const K& key) const {
+    switch (tag_) {
+      case Tag::Array:
+        return SortedMap{array_.erase(key)};
+      case Tag::Tree:
+        tree_type result = tree_.erase(key);
+        if (result.empty()) {
+          // Flip back to the array representation for empty arrays.
+          return SortedMap{comparator()};
+        }
+        return SortedMap{std::move(result)};
+    }
+    UNREACHABLE();
+  }
+
+  bool contains(const K& key) const {
+    switch (tag_) {
+      case Tag::Array:
+        return array_.contains(key);
+      case Tag::Tree:
+        return tree_.contains(key);
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Finds a value in the map.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key, or end() if
+   *     not found.
+   */
+  const_iterator find(const K& key) const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator(array_.find(key));
+      case Tag::Tree:
+        return const_iterator{tree_.find(key)};
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Finds the index of the given key in the map.
+   *
+   * @param key The key to look up.
+   * @return The index of the entry containing the key, or npos if not found.
+   */
+  size_type find_index(const K& key) const {
+    switch (tag_) {
+      case Tag::Array:
+        return array_.find_index(key);
+      case Tag::Tree:
+        return tree_.find_index(key);
+    }
+    UNREACHABLE();
+  }
+
+  absl::optional<V> get(const K& key) const {
+    auto found = find(key);
+    if (found != end()) {
+      return found->second;
+    } else {
+      return absl::nullopt;
+    }
+  }
+
+  /**
+   * Finds the first entry in the map containing a key greater than or equal
+   * to the given key.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key or the next
+   *     largest key. Can return end() if all keys in the map are less than the
+   *     requested key.
+   */
+  const_iterator lower_bound(const K& key) const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator(array_.lower_bound(key));
+      case Tag::Tree:
+        return const_iterator{tree_.lower_bound(key)};
+    }
+    UNREACHABLE();
+  }
+
+  const_iterator min() const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator(array_.min());
+      case Tag::Tree:
+        return const_iterator{tree_.min()};
+    }
+    UNREACHABLE();
+  }
+
+  const_iterator max() const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator(array_.max());
+      case Tag::Tree:
+        return const_iterator{tree_.max()};
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Returns an iterator pointing to the first entry in the map. If there are
+   * no entries in the map, begin() == end().
+   */
+  const_iterator begin() const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator{array_.begin()};
+      case Tag::Tree:
+        return const_iterator{tree_.begin()};
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Returns an iterator pointing past the last entry in the map.
+   */
+  const_iterator end() const {
+    switch (tag_) {
+      case Tag::Array:
+        return const_iterator{array_.end()};
+      case Tag::Tree:
+        return const_iterator{tree_.end()};
+    }
+    UNREACHABLE();
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted.
+   */
+  const util::range<const_key_iterator> keys() const {
+    return impl::KeysView(*this);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given key.
+   */
+  const util::range<const_key_iterator> keys_from(const K& key) const {
+    return impl::KeysViewFrom(*this, key);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given start_key and less
+   * than the given end_key.
+   */
+  const util::range<const_key_iterator> keys_in(const K& start_key,
+                                                const K& end_key) const {
+    return impl::KeysViewIn(*this, start_key, end_key, comparator());
+  }
+
+ private:
+  explicit SortedMap(array_type&& array)
+      : tag_{Tag::Array}, array_{std::move(array)} {
+  }
+
+  explicit SortedMap(tree_type&& tree)
+      : tag_{Tag::Tree}, tree_{std::move(tree)} {
+  }
+
+  enum class Tag {
+    Array,
+    Tree,
+  };
+
+  Tag tag_;
+  union {
+    array_type array_;
+    tree_type tree_;
+  };
+};
+
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map_iterator.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map_iterator.h
new file mode 100644
index 0000000..e565150
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_map_iterator.h	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_ITERATOR_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_ITERATOR_H_
+
+#include <utility>
+
+#include "Firestore/core/src/immutable/array_sorted_map.h"
+#include "Firestore/core/src/immutable/tree_sorted_map.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+template <typename V, typename ArrayIter, typename TreeIter>
+class SortedMapIterator {
+ public:
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = V;
+  using pointer = const value_type*;
+  using reference = const value_type&;
+  using difference_type = std::ptrdiff_t;
+
+ public:
+  // Default constructor to conform to the requirements of ForwardIterator
+  SortedMapIterator() : tag_{Tag::Array}, array_iter_{} {
+  }
+
+  explicit SortedMapIterator(ArrayIter&& delegate)
+      : tag_{Tag::Array}, array_iter_{std::move(delegate)} {
+  }
+
+  explicit SortedMapIterator(TreeIter&& delegate)
+      : tag_{Tag::Tree}, tree_iter_{std::move(delegate)} {
+  }
+
+  SortedMapIterator(const SortedMapIterator& other) : tag_(other.tag_) {
+    switch (tag_) {
+      case Tag::Array:
+        new (&array_iter_) ArrayIter{other.array_iter_};
+        break;
+      case Tag::Tree:
+        new (&tree_iter_) TreeIter{other.tree_iter_};
+        break;
+    }
+  }
+
+  SortedMapIterator(SortedMapIterator&& other) noexcept : tag_(other.tag_) {
+    switch (tag_) {
+      case Tag::Array:
+        new (&array_iter_) ArrayIter{std::move(other.array_iter_)};
+        break;
+      case Tag::Tree:
+        new (&tree_iter_) TreeIter{std::move(other.tree_iter_)};
+        break;
+    }
+  }
+
+  ~SortedMapIterator() {
+    switch (tag_) {
+      case Tag::Array:
+        array_iter_.~ArrayIter();
+        break;
+      case Tag::Tree:
+        tree_iter_.~TreeIter();
+        break;
+    }
+  }
+
+  SortedMapIterator& operator=(const SortedMapIterator& other) {
+    if (tag_ == other.tag_) {
+      switch (tag_) {
+        case Tag::Array:
+          array_iter_ = other.array_iter_;
+          break;
+        case Tag::Tree:
+          tree_iter_ = other.tree_iter_;
+          break;
+      }
+    } else {
+      this->~SortedMapIterator();
+      new (this) SortedMapIterator(other);
+    }
+    return *this;
+  }
+
+  SortedMapIterator& operator=(SortedMapIterator&& other) noexcept {
+    if (tag_ == other.tag_) {
+      switch (tag_) {
+        case Tag::Array:
+          array_iter_ = std::move(other.array_iter_);
+          break;
+        case Tag::Tree:
+          tree_iter_ = std::move(other.tree_iter_);
+          break;
+      }
+    } else {
+      this->~SortedMapIterator();
+      new (this) SortedMapIterator(std::move(other));
+    }
+    return *this;
+  }
+
+  pointer get() const {
+    switch (tag_) {
+      case Tag::Array:
+        // std::array::iterator is not guaranteed to be a bare pointer but will
+        // be a RandomAccessIterator which does have operator*().
+        return &*array_iter_;
+      case Tag::Tree:
+        return tree_iter_.get();
+    }
+    UNREACHABLE();
+  }
+
+  reference operator*() const {
+    return *get();
+  }
+
+  pointer operator->() const {
+    return get();
+  }
+
+  SortedMapIterator& operator++() {
+    switch (tag_) {
+      case Tag::Array:
+        ++array_iter_;
+        break;
+      case Tag::Tree:
+        ++tree_iter_;
+        break;
+    }
+    return *this;
+  }
+
+  SortedMapIterator operator++(int /*unused*/) {
+    SortedMapIterator result = *this;
+    ++*this;
+    return result;
+  }
+
+  friend bool operator==(const SortedMapIterator& a,
+                         const SortedMapIterator& b) {
+    if (a.tag_ != b.tag_) {
+      return false;
+    }
+
+    switch (a.tag_) {
+      case Tag::Array:
+        return a.array_iter_ == b.array_iter_;
+      case Tag::Tree:
+        return a.tree_iter_ == b.tree_iter_;
+    }
+    UNREACHABLE();
+  }
+
+  bool operator!=(const SortedMapIterator& b) const {
+    return !(*this == b);
+  }
+
+ private:
+  enum class Tag {
+    Array,
+    Tree,
+  };
+
+  Tag tag_;
+  union {
+    ArrayIter array_iter_;
+    TreeIter tree_iter_;
+  };
+};
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_MAP_ITERATOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_set.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_set.h
new file mode 100644
index 0000000..31950be
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/sorted_set.h	
@@ -0,0 +1,163 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_SET_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_SET_H_
+
+#include <algorithm>
+#include <utility>
+
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/immutable/sorted_map.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/empty.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+
+template <typename K, typename C = util::Comparator<K>>
+class SortedSet : public SortedContainer {
+ public:
+  using map_type = SortedMap<K, util::Empty, C>;
+
+  using size_type = typename map_type::size_type;
+  using value_type = K;
+
+  using const_iterator = typename map_type::const_key_iterator;
+
+  explicit SortedSet(const C& comparator = C()) : map_{comparator} {
+  }
+
+  explicit SortedSet(const map_type& map) : map_{map} {
+  }
+
+  explicit SortedSet(map_type&& map) : map_{std::move(map)} {
+  }
+
+  SortedSet(std::initializer_list<value_type> entries, const C& comparator = {})
+      : map_{comparator} {
+    for (auto&& value : entries) {
+      map_ = map_.insert(value, {});
+    }
+  }
+
+  bool empty() const {
+    return map_.empty();
+  }
+
+  size_type size() const {
+    return map_.size();
+  }
+
+  const C& comparator() const {
+    return map_.comparator();
+  }
+
+  ABSL_MUST_USE_RESULT SortedSet insert(const K& key) const {
+    return SortedSet{map_.insert(key, {})};
+  }
+
+  ABSL_MUST_USE_RESULT SortedSet union_with(const SortedSet& other) const {
+    const SortedSet* result_ptr = this;
+    const SortedSet* other_ptr = &other;
+
+    // Make sure `result_ptr` always points to the larger one of the two sets.
+    if (result_ptr->size() < other_ptr->size()) {
+      result_ptr = other_ptr;
+      other_ptr = this;
+    }
+
+    auto result = *result_ptr;
+    for (const auto& k : *other_ptr) {
+      result = result.insert(k);
+    }
+    return result;
+  }
+
+  ABSL_MUST_USE_RESULT SortedSet erase(const K& key) const {
+    return SortedSet{map_.erase(key)};
+  }
+
+  bool contains(const K& key) const {
+    return map_.contains(key);
+  }
+
+  const_iterator find(const K& key) const {
+    return const_iterator{map_.find(key)};
+  }
+
+  size_type find_index(const K& key) const {
+    return map_.find_index(key);
+  }
+
+  const_iterator min() const {
+    return const_iterator{map_.min()};
+  }
+
+  const_iterator max() const {
+    return const_iterator{map_.max()};
+  }
+
+  const_iterator begin() const {
+    return const_iterator{map_.begin()};
+  }
+
+  const_iterator end() const {
+    return const_iterator{map_.end()};
+  }
+
+  /**
+   * Returns a view of this SortedSet containing just the keys that have been
+   * inserted that are greater than or equal to the given key.
+   */
+  const util::range<const_iterator> values_from(const K& key) const {
+    return map_.keys_from(key);
+  }
+
+  /**
+   * Returns a view of this SortedSet containing just the keys that have been
+   * inserted that are greater than or equal to the given start_key and less
+   * than the given end_key.
+   */
+  const util::range<const_iterator> values_in(const K& start_key,
+                                              const K& end_key) const {
+    return map_.keys_in(start_key, end_key);
+  }
+
+  friend bool operator==(const SortedSet& lhs, const SortedSet& rhs) {
+    if (lhs.size() != rhs.size()) {
+      return false;
+    }
+    return std::equal(lhs.begin(), lhs.end(), rhs.begin());
+  }
+
+  friend bool operator!=(const SortedSet& lhs, const SortedSet& rhs) {
+    return !(lhs == rhs);
+  }
+
+ private:
+  map_type map_;
+};
+
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_SORTED_SET_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/tree_sorted_map.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/tree_sorted_map.h
new file mode 100644
index 0000000..0cabc1f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/immutable/tree_sorted_map.h	
@@ -0,0 +1,269 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_IMMUTABLE_TREE_SORTED_MAP_H_
+#define FIRESTORE_CORE_SRC_IMMUTABLE_TREE_SORTED_MAP_H_
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/immutable/keys_view.h"
+#include "Firestore/core/src/immutable/llrb_node.h"
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/compressed_member.h"
+
+namespace firebase {
+namespace firestore {
+namespace immutable {
+namespace impl {
+
+/**
+ * TreeSortedMap is a value type containing a map. It is immutable, but has
+ * methods to efficiently create new maps that are mutations of it.
+ */
+template <typename K, typename V, typename C = util::Comparator<K>>
+class TreeSortedMap : public SortedMapBase, private util::CompressedMember<C> {
+  using ComparatorMember = util::CompressedMember<C>;
+
+ public:
+  /**
+   * The type of the entries stored in the map.
+   */
+  using value_type = std::pair<K, V>;
+
+  /**
+   * The type of the node containing entries of value_type.
+   */
+  using node_type = LlrbNode<K, V>;
+  using const_iterator = typename node_type::const_iterator;
+  using const_key_iterator = util::iterator_first<const_iterator>;
+
+  /**
+   * Creates an empty TreeSortedMap.
+   */
+  explicit TreeSortedMap(const C& comparator = {})
+      : ComparatorMember{comparator} {
+  }
+
+  /**
+   * Creates a TreeSortedMap from a range of pairs to insert.
+   */
+  template <typename Range>
+  static TreeSortedMap Create(const Range& range, const C& comparator) {
+    node_type node;
+    for (auto&& element : range) {
+      node = node.insert(element.first, element.second, comparator);
+    }
+    return TreeSortedMap{std::move(node), comparator};
+  }
+
+  /** Returns true if the map contains no elements. */
+  bool empty() const {
+    return root_.empty();
+  }
+
+  /** Returns the number of items in this map. */
+  size_type size() const {
+    return root_.size();
+  }
+
+  const node_type& root() const {
+    return root_;
+  }
+
+  const C& comparator() const {
+    return ComparatorMember::get();
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key-value pair added or
+   * updated.
+   *
+   * @param key The key to insert/update.
+   * @param value The value to associate with the key.
+   * @return A new dictionary with the added/updated value.
+   */
+  TreeSortedMap insert(const K& key, const V& value) const {
+    const C& comparator = this->comparator();
+    return TreeSortedMap{root_.insert(key, value, comparator), comparator};
+  }
+
+  /**
+   * Creates a new map identical to this one, but with a key removed from it.
+   *
+   * @param key The key to remove.
+   * @return A new map without that value.
+   */
+  TreeSortedMap erase(const K& key) const {
+    const C& comparator = this->comparator();
+    return TreeSortedMap{root_.erase(key, comparator), comparator};
+  }
+
+  bool contains(const K& key) const {
+    // Inline the tree traversal here to avoid building up the stack required
+    // to construct a full iterator.
+    const C& comparator = this->comparator();
+    const node_type* node = &root();
+    while (!node->empty()) {
+      util::ComparisonResult cmp = comparator.Compare(key, node->key());
+      if (cmp == util::ComparisonResult::Same) {
+        return true;
+      } else if (cmp == util::ComparisonResult::Ascending) {
+        node = &node->left();
+      } else {
+        node = &node->right();
+      }
+    }
+    return false;
+  }
+
+  /**
+   * Finds a value in the map.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key, or end() if
+   *     not found.
+   */
+  const_iterator find(const K& key) const {
+    const_iterator found = lower_bound(key);
+    if (!found.is_end() &&
+        util::Same(this->comparator().Compare(key, found->first))) {
+      return found;
+    } else {
+      return end();
+    }
+  }
+
+  /**
+   * Finds the index of the given key in the map.
+   *
+   * @param key The key to look up.
+   * @return The index of the entry containing the key, or npos if not found.
+   */
+  size_type find_index(const K& key) const {
+    const C& comparator = this->comparator();
+
+    size_type pruned_nodes = 0;
+    const node_type* node = &root_;
+    while (!node->empty()) {
+      util::ComparisonResult cmp = comparator.Compare(key, node->key());
+      if (cmp == util::ComparisonResult::Same) {
+        return pruned_nodes + node->left().size();
+
+      } else if (cmp == util::ComparisonResult::Ascending) {
+        node = &node->left();
+
+      } else if (cmp == util::ComparisonResult::Descending) {
+        pruned_nodes += node->left().size() + 1;
+        node = &node->right();
+      }
+    }
+    return npos;
+  }
+
+  /**
+   * Finds the first entry in the map containing a key greater than or equal
+   * to the given key.
+   *
+   * @param key The key to look up.
+   * @return An iterator pointing to the entry containing the key or the next
+   *     largest key. Can return end() if all keys in the map are less than the
+   *     requested key.
+   */
+  const_iterator lower_bound(const K& key) const {
+    return const_iterator::LowerBound(&root_, key, this->comparator());
+  }
+
+  const_iterator min() const {
+    return begin();
+  }
+
+  const_iterator max() const {
+    if (empty()) {
+      return end();
+    }
+
+    const node_type& max_node = root_.max();
+    typename const_iterator::stack_type stack;
+    stack.push(&max_node);
+    return const_iterator{std::move(stack)};
+  }
+
+  /**
+   * Returns a forward iterator pointing to the first entry in the map. If there
+   * are no entries in the map, begin() == end().
+   *
+   * See LlrbNodeIterator for details
+   */
+  const_iterator begin() const {
+    return const_iterator::Begin(&root_);
+  }
+
+  /**
+   * Returns an iterator pointing past the last entry in the map.
+   */
+  const_iterator end() const {
+    return const_iterator::End();
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted.
+   */
+  const util::range<const_key_iterator> keys() const {
+    return KeysView(*this);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given key.
+   */
+  const util::range<const_key_iterator> keys_from(const K& key) const {
+    return KeysViewFrom(*this, key);
+  }
+
+  /**
+   * Returns a view of this SortedMap containing just the keys that have been
+   * inserted that are greater than or equal to the given start_key and less
+   * than the given end_key.
+   */
+  const util::range<const_key_iterator> keys_in(const K& start_key,
+                                                const K& end_key) const {
+    return impl::KeysViewIn(*this, start_key, end_key, this->comparator());
+  }
+
+ private:
+  TreeSortedMap(node_type&& root, const C& comparator) noexcept
+      : ComparatorMember{comparator}, root_{std::move(root)} {
+  }
+
+  TreeSortedMap Wrap(node_type&& root) noexcept {
+    return TreeSortedMap{std::move(root), this->comparator()};
+  }
+
+  node_type root_;
+};
+
+}  // namespace impl
+}  // namespace immutable
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_IMMUTABLE_TREE_SORTED_MAP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/bundle_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/bundle_cache.h
new file mode 100644
index 0000000..dba3956
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/bundle_cache.h	
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_BUNDLE_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_BUNDLE_CACHE_H_
+
+#include <string>
+
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace bundle {
+
+class BundleMetadata;
+class NamedQuery;
+
+}  // namespace bundle
+
+namespace local {
+
+/**
+ * Provides methods to save and read Firestore bundles.
+ */
+class BundleCache {
+ public:
+  virtual ~BundleCache() = default;
+
+  /**
+   * Gets the saved metadata for a given bundle id.
+   *
+   * @return The `Bundle` corresponding to the given bundle id, or nullopt if
+   * no bundles are found for the given id.
+   */
+  virtual absl::optional<bundle::BundleMetadata> GetBundleMetadata(
+      const std::string& bundle_id) const = 0;
+
+  /**
+   * Saves the metadata for a bundle into local storage, using its id as the
+   * persistent key.
+   */
+  virtual void SaveBundleMetadata(const bundle::BundleMetadata& metadata) = 0;
+
+  /**
+   * Gets a saved `NamedQuery` for the given query name.
+   *
+   * @return The `NamedQuery` corresponding to the given query name, or nullopt
+   * if no queries are found for the given name.
+   */
+  virtual absl::optional<bundle::NamedQuery> GetNamedQuery(
+      const std::string& query_name) const = 0;
+
+  /**
+   * Saves a `NamedQuery` from a bundle, using its name as the persistent key.
+   */
+  virtual void SaveNamedQuery(const bundle::NamedQuery& query) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_BUNDLE_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.cc
new file mode 100644
index 0000000..e5430c2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.cc	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/document_key_reference.h"
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::DocumentKey;
+using util::ComparisonResult;
+
+bool operator==(const DocumentKeyReference& lhs,
+                const DocumentKeyReference& rhs) {
+  return lhs.key_ == rhs.key_ && lhs.ref_id_ == rhs.ref_id_;
+}
+
+size_t DocumentKeyReference::Hash() const {
+  return util::Hash(key_.ToString(), ref_id_);
+}
+
+std::string DocumentKeyReference::ToString() const {
+  return util::StringFormat("<DocumentKeyReference: key=%s, id=%s>",
+                            key_.ToString(), ref_id_);
+}
+
+/** Sorts document references by key then ID. */
+ComparisonResult DocumentKeyReference::ByKey::Compare(
+    const DocumentKeyReference& lhs, const DocumentKeyReference& rhs) const {
+  ComparisonResult result = util::Compare(lhs.key_, rhs.key_);
+  if (!util::Same(result)) return result;
+
+  return util::Compare(lhs.ref_id_, rhs.ref_id_);
+}
+
+/** Sorts document references by ID then key. */
+ComparisonResult DocumentKeyReference::ById::Compare(
+    const DocumentKeyReference& lhs, const DocumentKeyReference& rhs) const {
+  ComparisonResult result = util::Compare(lhs.ref_id_, rhs.ref_id_);
+  if (!util::Same(result)) return result;
+
+  return util::Compare(lhs.key_, rhs.key_);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.h
new file mode 100644
index 0000000..71bba7a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/document_key_reference.h	
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_DOCUMENT_KEY_REFERENCE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_DOCUMENT_KEY_REFERENCE_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/comparison.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * An immutable value used to keep track of an association between some
+ * referencing target or batch and a document key that the target or batch
+ * references.
+ *
+ * A reference can be from either listen targets (identified by their TargetId)
+ * or mutation batches (identified by their BatchId). See GarbageCollector
+ * for more details.
+ *
+ * Not to be confused with FIRDocumentReference.
+ */
+class DocumentKeyReference {
+ public:
+  DocumentKeyReference() {
+  }
+
+  /** Initializes the document reference with the given key and Id. */
+  DocumentKeyReference(model::DocumentKey key, int32_t ref_id)
+      : key_{std::move(key)}, ref_id_{ref_id} {
+  }
+
+  /** The document key that's the target of this reference. */
+  const model::DocumentKey& key() const {
+    return key_;
+  }
+
+  /**
+   * The TargetId of a referring target or the BatchId of a referring mutation
+   * batch. (Which this is depends upon which ReferenceSet this reference is
+   * a part of.)
+   */
+  int32_t ref_id() const {
+    return ref_id_;
+  }
+
+  friend bool operator==(const DocumentKeyReference& lhs,
+                         const DocumentKeyReference& rhs);
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+  /** Sorts document references by key then Id. */
+  struct ByKey {
+    util::ComparisonResult Compare(const DocumentKeyReference& lhs,
+                                   const DocumentKeyReference& rhs) const;
+  };
+
+  /** Sorts document references by Id then key. */
+  struct ById {
+    util::ComparisonResult Compare(const DocumentKeyReference& lhs,
+                                   const DocumentKeyReference& rhs) const;
+  };
+
+ private:
+  model::DocumentKey key_;
+
+  // PORTING NOTE: this is `id` on other platforms but that's a reserved word in
+  // Objective-C++.
+  int32_t ref_id_ = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_DOCUMENT_KEY_REFERENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/index_manager.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/index_manager.h
new file mode 100644
index 0000000..c0fe940
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/index_manager.h	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_INDEX_MANAGER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_INDEX_MANAGER_H_
+
+#include <string>
+#include <vector>
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class ResourcePath;
+}  // namespace model
+
+namespace local {
+
+/**
+ * Represents a set of indexes that are used to execute queries efficiently.
+ *
+ * Currently the only index is a [collection id] => [parent path] index, used
+ * to execute Collection Group queries.
+ */
+class IndexManager {
+ public:
+  virtual ~IndexManager() = default;
+
+  /**
+   * Creates an index entry mapping the collection_id (last segment of the path)
+   * to the parent path (either the containing document location or the empty
+   * path for root-level collections). Index entries can be retrieved via
+   * GetCollectionParents().
+   *
+   * NOTE: Currently we don't remove index entries. If this ends up being an
+   * issue we can devise some sort of GC strategy.
+   */
+  virtual void AddToCollectionParentIndex(
+      const model::ResourcePath& collection_path) = 0;
+
+  /**
+   * Retrieves all parent locations containing the given collection_id, as a set
+   * of paths (each path being either a document location or the empty path for
+   * a root-level collection).
+   */
+  virtual std::vector<model::ResourcePath> GetCollectionParents(
+      const std::string& collection_id) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_INDEX_MANAGER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.cc
new file mode 100644
index 0000000..9af2737
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.cc	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_bundle_cache.h"
+
+#include <utility>
+
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using bundle::BundleMetadata;
+using bundle::NamedQuery;
+using nanopb::Message;
+using nanopb::StringReader;
+
+LevelDbBundleCache::LevelDbBundleCache(LevelDbPersistence* db,
+                                       LocalSerializer* serializer)
+    : db_(NOT_NULL(db)), serializer_(NOT_NULL(serializer)) {
+}
+
+absl::optional<BundleMetadata> LevelDbBundleCache::GetBundleMetadata(
+    const std::string& bundle_id) const {
+  auto key = LevelDbBundleKey::Key(bundle_id);
+  std::string encoded;
+  auto done = db_->current_transaction()->Get(key, &encoded);
+
+  if (!done.ok()) {
+    return absl::nullopt;
+  }
+
+  nanopb::StringReader reader{encoded};
+  auto message = Message<firestore_BundleMetadata>::TryParse(&reader);
+  if (!reader.ok()) {
+    HARD_FAIL("BundleMetadata proto failed to parse: %s",
+              reader.status().ToString());
+  }
+
+  BundleMetadata bundle = serializer_->DecodeBundle(&reader, *message);
+  if (!reader.ok()) {
+    HARD_FAIL("BundleMetadata proto failed to decode: %s",
+              reader.status().ToString());
+  }
+  return absl::make_optional(std::move(bundle));
+}
+
+void LevelDbBundleCache::SaveBundleMetadata(const BundleMetadata& metadata) {
+  auto key = LevelDbBundleKey::Key(metadata.bundle_id());
+  db_->current_transaction()->Put(key, serializer_->EncodeBundle(metadata));
+}
+
+absl::optional<NamedQuery> LevelDbBundleCache::GetNamedQuery(
+    const std::string& query_name) const {
+  auto key = LevelDbNamedQueryKey::Key(query_name);
+  std::string encoded;
+  auto done = db_->current_transaction()->Get(key, &encoded);
+
+  if (!done.ok()) {
+    return absl::nullopt;
+  }
+
+  nanopb::StringReader reader{encoded};
+  auto message = Message<firestore_NamedQuery>::TryParse(&reader);
+  if (!reader.ok()) {
+    HARD_FAIL("NamedQuery proto failed to parse: %s",
+              reader.status().ToString());
+  }
+
+  auto named_query = serializer_->DecodeNamedQuery(&reader, *message);
+  if (!reader.ok()) {
+    HARD_FAIL("NamedQuery proto failed to decode: %s",
+              reader.status().ToString());
+  }
+  return absl::make_optional(std::move(named_query));
+}
+
+void LevelDbBundleCache::SaveNamedQuery(const NamedQuery& query) {
+  auto key = LevelDbNamedQueryKey::Key(query.query_name());
+  db_->current_transaction()->Put(key, serializer_->EncodeNamedQuery(query));
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.h
new file mode 100644
index 0000000..dabe5b3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_bundle_cache.h	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_BUNDLE_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_BUNDLE_CACHE_H_
+
+#include <string>
+
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/local/bundle_cache.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LevelDbPersistence;
+class LocalSerializer;
+
+class LevelDbBundleCache : public BundleCache {
+ public:
+  /** Creates a new bundle cache in the given LevelDB. */
+  LevelDbBundleCache(LevelDbPersistence* db, LocalSerializer* serializer);
+
+  absl::optional<bundle::BundleMetadata> GetBundleMetadata(
+      const std::string& bundle_id) const override;
+
+  void SaveBundleMetadata(const bundle::BundleMetadata& metadata) override;
+
+  absl::optional<bundle::NamedQuery> GetNamedQuery(
+      const std::string& query_name) const override;
+
+  void SaveNamedQuery(const bundle::NamedQuery& query) override;
+
+ private:
+  // The LevelDbBundleCache is owned by LevelDbPersistence.
+  LevelDbPersistence* db_ = nullptr;
+  // Owned by LevelDbPersistence.
+  LocalSerializer* serializer_ = nullptr;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_BUNDLE_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.cc
new file mode 100644
index 0000000..9cbf11e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.cc	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_index_manager.h"
+
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/memory_index_manager.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::ResourcePath;
+
+LevelDbIndexManager::LevelDbIndexManager(LevelDbPersistence* db) : db_(db) {
+}
+
+void LevelDbIndexManager::AddToCollectionParentIndex(
+    const ResourcePath& collection_path) {
+  HARD_ASSERT(collection_path.size() % 2 == 1, "Expected a collection path.");
+
+  if (collection_parents_cache_.Add(collection_path)) {
+    std::string collection_id = collection_path.last_segment();
+    ResourcePath parent_path = collection_path.PopLast();
+
+    std::string key =
+        LevelDbCollectionParentKey::Key(collection_id, parent_path);
+    std::string empty_buffer;
+    db_->current_transaction()->Put(key, empty_buffer);
+  }
+}
+
+std::vector<ResourcePath> LevelDbIndexManager::GetCollectionParents(
+    const std::string& collection_id) {
+  std::vector<ResourcePath> results;
+
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  std::string index_prefix =
+      LevelDbCollectionParentKey::KeyPrefix(collection_id);
+  LevelDbCollectionParentKey row_key;
+  for (index_iterator->Seek(index_prefix); index_iterator->Valid();
+       index_iterator->Next()) {
+    if (!absl::StartsWith(index_iterator->key(), index_prefix) ||
+        !row_key.Decode(index_iterator->key()) ||
+        row_key.collection_id() != collection_id) {
+      break;
+    }
+
+    results.push_back(row_key.parent());
+  }
+  return results;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.h
new file mode 100644
index 0000000..233b8dd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_index_manager.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_INDEX_MANAGER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_INDEX_MANAGER_H_
+
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/local/index_manager.h"
+#include "Firestore/core/src/local/memory_index_manager.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LevelDbPersistence;
+
+/** A persisted implementation of IndexManager. */
+class LevelDbIndexManager : public IndexManager {
+ public:
+  explicit LevelDbIndexManager(LevelDbPersistence* db);
+
+  void AddToCollectionParentIndex(
+      const model::ResourcePath& collection_path) override;
+
+  std::vector<model::ResourcePath> GetCollectionParents(
+      const std::string& collection_id) override;
+
+ private:
+  // The LevelDbIndexManager is owned by LevelDbPersistence.
+  LevelDbPersistence* db_;
+
+  /**
+   * An in-memory copy of the index entries we've already written since the SDK
+   * launched. Used to avoid re-writing the same entry repeatedly.
+   *
+   * This is *NOT* a complete cache of what's in persistence and so can never
+   * be used to satisfy reads.
+   */
+  MemoryCollectionParentIndex collection_parents_cache_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_INDEX_MANAGER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.cc
new file mode 100644
index 0000000..a5f25e5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.cc	
@@ -0,0 +1,1099 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_key.h"
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/local/leveldb_util.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/util/ordered_code.h"
+#include "absl/base/attributes.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/str_cat.h"
+
+using firebase::firestore::model::DocumentKey;
+using firebase::firestore::model::ResourcePath;
+using firebase::firestore::util::OrderedCode;
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+namespace {
+
+const char* kVersionGlobalTable = "version";
+const char* kMutationsTable = "mutation";
+const char* kDocumentMutationsTable = "document_mutation";
+const char* kMutationQueuesTable = "mutation_queue";
+const char* kTargetGlobalTable = "target_global";
+const char* kTargetsTable = "target";
+const char* kQueryTargetsTable = "query_target";
+const char* kTargetDocumentsTable = "target_document";
+const char* kDocumentTargetsTable = "document_target";
+const char* kRemoteDocumentsTable = "remote_document";
+const char* kCollectionParentsTable = "collection_parent";
+const char* kRemoteDocumentReadTimeTable = "remote_document_read_time";
+const char* kBundlesTable = "bundles";
+const char* kNamedQueriesTable = "named_queries";
+
+/**
+ * Labels for the components of keys. These serve to make keys self-describing.
+ *
+ * These are intended to sort similarly to keys in the server storage format.
+ *
+ * Note that the server writes component labels using the equivalent to
+ * OrderedCode::WriteSignedNumDecreasing. This means that despite the higher
+ * numeric value, a terminator sorts before a path segment. In order to avoid
+ * needing the WriteSignedNumDecreasing code just for these values, this enum's
+ * values are in the reverse order to the server side.
+ *
+ * Most server-side values don't apply here. For example, the server embeds
+ * projects, databases, namespaces and similar values in its entity keys where
+ * the clients just open a different leveldb. Similarly, many of these values
+ * don't apply to the server since the server is backed by spanner which
+ * natively has concepts of tables and indexes. Where there's overlap, a comment
+ * denotes the server value from the storage_format_internal.proto.
+ */
+enum ComponentLabel {
+  /**
+   * A terminator is the final component of a key. All complete keys have a
+   * terminator and a key is known to be a key prefix if it doesn't have a
+   * terminator.
+   */
+  Terminator = 0,  // TERMINATOR_COMPONENT = 63, server-side
+
+  /**
+   * A table name component names the logical table to which the key belongs.
+   */
+  TableName = 5,
+
+  /** A component containing the batch Id of a mutation. */
+  BatchId = 10,
+
+  /** A component containing the canonical Id of a query. */
+  CanonicalId = 11,
+
+  /** A component containing the target Id of a query. */
+  TargetId = 12,
+
+  /** A component containing a user Id. */
+  UserId = 13,
+
+  /**
+   * A component containing a standalone collection ID (e.g. as used by the
+   * collection_parent table, but not for collection IDs within paths).
+   */
+  CollectionId = 14,
+
+  /**
+   * A component containing a standalone document ID (as used by the
+   * remote_document_read_time table).
+   */
+  DocumentId = 15,
+
+  /** A component containing a snapshot version. */
+  SnapshotVersion = 16,
+
+  /** A component containing a Firestore bundle id. */
+  BundleId = 17,
+
+  /** A component containing the name of a named query. */
+  QueryName = 18,
+
+  /**
+   * A path segment describes just a single segment in a resource path. Path
+   * segments that occur sequentially in a key represent successive segments in
+   * a single path.
+   *
+   * This value must be greater than ComponentLabel::Terminator to ensure that
+   * longer paths sort after paths that are prefixes of them.
+   *
+   * This value must also be larger than other separators so that path suffixes
+   * sort after other key components.
+   */
+  PathSegment = 62,  // PATH = 60, server-side
+
+  /**
+   * The maximum value that can be encoded by WriteSignedNumIncreasing in a
+   * single byte.
+   */
+  Unknown = 63,
+};
+
+/**
+ * A helper for reading through the string form of a LevelDB key, as written
+ * by Writer.
+ */
+class Reader {
+ public:
+  explicit Reader(leveldb::Slice src) : src_(src), ok_(true) {
+  }
+
+  explicit Reader(absl::string_view src) : Reader{MakeSlice(src)} {
+  }
+
+  /** Returns true if the Reader has encountered no errors. */
+  bool ok() const {
+    return ok_;
+  }
+
+  /** Returns true if the Reader has no more bytes to read. */
+  bool empty() const {
+    return !ok_ || src_.empty();
+  }
+
+  /**
+   * Parses the components of the key and returns a string description of them.
+   */
+  std::string Describe();
+
+  void ReadTableNameMatching(const char* expected_table_name) {
+    if (!ReadLabeledStringMatching(ComponentLabel::TableName,
+                                   expected_table_name)) {
+      Fail();
+    }
+  }
+
+  model::BatchId ReadBatchId() {
+    return ReadLabeledInt32(ComponentLabel::BatchId);
+  }
+
+  std::string ReadCanonicalId() {
+    return ReadLabeledString(ComponentLabel::CanonicalId);
+  }
+
+  model::TargetId ReadTargetId() {
+    return ReadLabeledInt32(ComponentLabel::TargetId);
+  }
+
+  std::string ReadUserId() {
+    return ReadLabeledString(ComponentLabel::UserId);
+  }
+
+  std::string ReadCollectionId() {
+    return ReadLabeledString(ComponentLabel::CollectionId);
+  }
+
+  std::string ReadDocumentId() {
+    return ReadLabeledString(ComponentLabel::DocumentId);
+  }
+
+  std::string ReadBundleId() {
+    return ReadLabeledString(ComponentLabel::BundleId);
+  }
+
+  std::string ReadQueryName() {
+    return ReadLabeledString(ComponentLabel::QueryName);
+  }
+
+  /**
+   * Reads a snapshot version, encoded as a component label and a pair of
+   * seconds (int64) and nanoseconds (int32).
+   */
+  model::SnapshotVersion ReadSnapshotVersion();
+
+  /**
+   * Reads component labels and strings from the key until it finds a component
+   * label other than ComponentLabel::PathSegment (or the key is exhausted).
+   * All matched path segments are assembled into a ResourcePath.
+   */
+  ResourcePath ReadResourcePath();
+
+  /**
+   * Reads component labels and strings from the key until it finds a component
+   * label other than ComponentLabel::PathSegment (or the key is exhausted).
+   * All matched path segments are assembled into a ResourcePath and wrapped in
+   * a DocumentKey.
+   *
+   * If the read is unsuccessful or the document key is invalid, returns a
+   * default DocumentKey and fails the Reader.
+   *
+   * Otherwise returns the decoded DocumentKey and the Reader advances to the
+   * next unread byte.
+   */
+  DocumentKey ReadDocumentKey();
+
+  /**
+   * Reads a terminator component from the key.
+   *
+   * If the read is unsuccessful or the component wasn't a Terminator, fails
+   * the Reader.
+   *
+   * Otherwise the Reader advances to the next unread byte (which for valid
+   * keys should make the Reader empty).
+   */
+  void ReadTerminator() {
+    if (!ReadComponentLabelMatching(ComponentLabel::Terminator)) {
+      Fail();
+    }
+  }
+
+ private:
+  /** OrderedCode::ReadSignedNumIncreasing adapted to leveldb::Slice. */
+  int64_t ReadSignedNumIncreasing() {
+    if (ok_) {
+      int64_t result = 0;
+      absl::string_view tmp = MakeStringView(src_);
+      if (OrderedCode::ReadSignedNumIncreasing(&tmp, &result)) {
+        src_ = MakeSlice(tmp);
+        return result;
+      }
+    }
+
+    Fail();
+    return 0;
+  }
+
+  /** OrderedCode::ReadString adapted to leveldb::Slice. */
+  std::string ReadString() {
+    if (ok_) {
+      std::string result;
+      absl::string_view tmp = MakeStringView(src_);
+      if (OrderedCode::ReadString(&tmp, &result)) {
+        src_ = MakeSlice(tmp);
+        return result;
+      }
+    }
+
+    Fail();
+    return "";
+  }
+
+  /**
+   * Reads a component label from the key.
+   *
+   * If the read is unsuccessful, returns ComponentLabel::Unknown and fails the
+   * Reader.
+   *
+   * Otherwise, returns the ComponentLabel and advances the Reader to the next
+   * unread byte.
+   */
+  ComponentLabel ReadComponentLabel() {
+    if (ok_) {
+      int64_t raw_result = ReadSignedNumIncreasing();
+      if (ok_ && raw_result >= ComponentLabel::Terminator &&
+          raw_result <= ComponentLabel::Unknown) {
+        return static_cast<ComponentLabel>(raw_result);
+      }
+    }
+
+    Fail();
+    return ComponentLabel::Unknown;
+  }
+
+  /**
+   * Reads a component label from the key.
+   *
+   * If the read is unsuccessful, returns false, and fails the Reader.
+   *
+   * Otherwise returns whether or not the component label is equal to the
+   * `expected_label` and advances the Reader to the next unread byte.
+   */
+  ABSL_MUST_USE_RESULT
+  bool ReadComponentLabelMatching(ComponentLabel expected_label) {
+    if (ok_) {
+      int64_t raw_result = ReadSignedNumIncreasing();
+      if (ok_) {
+        // Note: mismatch of a component label is not necessarily a failure.
+        // It's treated as a potential branch point within the parser.
+        return raw_result == expected_label;
+      }
+    }
+
+    Fail();
+    return false;
+  }
+
+  /**
+   * Reads a signed number from the key and verifies that the value fits in a
+   * 32-bit integer.
+   *
+   * If the read is unsuccessful or the number was out of range, returns 0 and
+   * fails the Reader.
+   *
+   * Otherwise, returns the number and advances the Reader to the next unread
+   * byte.
+   */
+  int32_t ReadInt32() {
+    if (ok_) {
+      int64_t raw_result = ReadSignedNumIncreasing();
+      if (ok_ && raw_result >= INT32_MIN && raw_result <= INT32_MAX) {
+        return static_cast<int32_t>(raw_result);
+      }
+    }
+
+    Fail();
+    return 0;
+  }
+
+  /**
+   * Reads a component label and signed number from the key and verifies that
+   * the label matches the expected_label and the value fits in a 32-bit
+   * integer.
+   *
+   * If the read is unsuccessful, the label didn't match, or the number was out
+   * of range, returns 0 and fails the Reader.
+   *
+   * Otherwise, returns the number and advances the Reader to the next unread
+   * byte.
+   */
+  int32_t ReadLabeledInt32(ComponentLabel expected_label) {
+    if (!ReadComponentLabelMatching(expected_label)) {
+      Fail();
+    }
+    return ReadInt32();
+  }
+
+  /**
+   * Reads a signed number from the key.
+   *
+   * If the read is unsuccessful, returns 0 and fails the Reader.
+   *
+   * Otherwise, returns the number and advances the Reader to the next unread
+   * byte.
+   */
+  int64_t ReadInt64() {
+    return ReadSignedNumIncreasing();
+  }
+
+  /**
+   * Reads a component label and a string from the key verifies that the label
+   * matches the expected_label.
+   *
+   * If the read is unsuccessful or the label didn't match, returns an empty
+   * string and fails the Reader.
+   *
+   * Otherwise, returns the string and advances the Reader to the next unread
+   * byte.
+   */
+  std::string ReadLabeledString(ComponentLabel expected_label) {
+    if (!ReadComponentLabelMatching(expected_label)) {
+      Fail();
+    }
+    return ReadString();
+  }
+
+  /**
+   * Reads a component label and a string from the key and verifies that the
+   * label matches the expected_label and the string matches the
+   * expected_value.
+   *
+   * If the read is unsuccessful or the label wasn't a string, returns false
+   * and fails the Reader.
+   *
+   * Otherwise returns whether or not the string that was read was equal to the
+   * expected value and advances the reader to the next unread byte.
+   */
+  ABSL_MUST_USE_RESULT
+  bool ReadLabeledStringMatching(ComponentLabel expected_label,
+                                 const char* expected_value) {
+    std::string value = ReadLabeledString(expected_label);
+    if (ok_) {
+      // Value mismatch does not constitute a failure:
+      return value == expected_value;
+    }
+
+    Fail();
+    return false;
+  }
+
+  /**
+   * Fails the Reader. All subsequent read operations will exit early if
+   * possible. Return values from any method will be defaults, as if those
+   * methods had failed themselves.
+   */
+  void Fail() {
+    ok_ = false;
+  }
+
+  leveldb::Slice src_;
+  bool ok_;
+};
+
+ResourcePath Reader::ReadResourcePath() {
+  std::vector<std::string> path_segments;
+  while (!empty()) {
+    // Advance a temporary slice to avoid advancing contents into the next key
+    // component which may not be a path segment.
+    leveldb::Slice saved_position = src_;
+    if (!ReadComponentLabelMatching(ComponentLabel::PathSegment)) {
+      src_ = saved_position;
+      break;
+    }
+
+    std::string segment = ReadString();
+    if (!ok_) break;
+
+    path_segments.push_back(std::move(segment));
+  }
+
+  return ResourcePath{std::move(path_segments)};
+}
+
+DocumentKey Reader::ReadDocumentKey() {
+  ResourcePath path = ReadResourcePath();
+
+  // Avoid assertion failures in DocumentKey if path is invalid.
+  if (ok_ && !path.empty() && DocumentKey::IsDocumentKey(path)) {
+    return DocumentKey{std::move(path)};
+  }
+
+  Fail();
+  return DocumentKey{};
+}
+
+model::SnapshotVersion Reader::ReadSnapshotVersion() {
+  if (!ReadComponentLabelMatching(ComponentLabel::SnapshotVersion)) {
+    Fail();
+  }
+
+  int64_t seconds = ReadInt64();
+  int32_t nanos = ReadInt32();
+
+  return model::SnapshotVersion({seconds, nanos});
+}
+
+/**
+ * Returns a base64-encoded string for an invalid key, used for debug-friendly
+ * description text.
+ */
+std::string InvalidKey(leveldb::Slice key) {
+  std::string result;
+  absl::Base64Escape(MakeStringView(key), &result);
+  return result;
+}
+
+std::string Reader::Describe() {
+  leveldb::Slice original = src_;
+
+  bool is_terminated = false;
+
+  std::string description;
+  absl::StrAppend(&description, "[");
+
+  while (!empty()) {
+    leveldb::Slice saved_source = src_;
+
+    ComponentLabel label = ReadComponentLabel();
+    if (!ok_) {
+      break;
+    }
+    if (label == ComponentLabel::Terminator) {
+      is_terminated = true;
+      break;
+    }
+
+    // Reset the reader since all the different read routines expect to see the
+    // separator first
+    src_ = saved_source;
+
+    if (label == ComponentLabel::PathSegment) {
+      ResourcePath resource_path = ReadResourcePath();
+      if (ok_) {
+        absl::StrAppend(&description,
+                        " path=", resource_path.CanonicalString());
+      }
+
+    } else if (label == ComponentLabel::TableName) {
+      std::string table = ReadLabeledString(ComponentLabel::TableName);
+      if (ok_) {
+        absl::StrAppend(&description, table, ":");
+      }
+
+    } else if (label == ComponentLabel::BatchId) {
+      model::BatchId batch_id = ReadBatchId();
+      if (ok_) {
+        absl::StrAppend(&description, " batch_id=", batch_id);
+      }
+
+    } else if (label == ComponentLabel::CanonicalId) {
+      std::string canonical_id = ReadCanonicalId();
+      if (ok_) {
+        absl::StrAppend(&description, " canonical_id=", canonical_id);
+      }
+
+    } else if (label == ComponentLabel::TargetId) {
+      model::TargetId target_id = ReadTargetId();
+      if (ok_) {
+        absl::StrAppend(&description, " target_id=", target_id);
+      }
+
+    } else if (label == ComponentLabel::UserId) {
+      std::string user_id = ReadUserId();
+      if (ok_) {
+        absl::StrAppend(&description, " user_id=", user_id);
+      }
+
+    } else if (label == ComponentLabel::CollectionId) {
+      std::string collection_id = ReadCollectionId();
+      if (ok_) {
+        absl::StrAppend(&description, " collection_id=", collection_id);
+      }
+
+    } else if (label == ComponentLabel::DocumentId) {
+      std::string document_id = ReadDocumentId();
+      if (ok_) {
+        absl::StrAppend(&description, " document_id=", document_id);
+      }
+
+    } else if (label == ComponentLabel::SnapshotVersion) {
+      model::SnapshotVersion snapshot_version = ReadSnapshotVersion();
+      if (ok_) {
+        absl::StrAppend(&description,
+                        " snapshot_version=", snapshot_version.ToString());
+      }
+    } else if (label == ComponentLabel::BundleId) {
+      std::string bundle_id = ReadBundleId();
+      if (ok_) {
+        absl::StrAppend(&description, " bundle_id=", bundle_id);
+      }
+    } else if (label == ComponentLabel::QueryName) {
+      std::string query_name = ReadQueryName();
+      if (ok_) {
+        absl::StrAppend(&description, " query_name=", query_name);
+      }
+    } else {
+      absl::StrAppend(&description, " unknown label=", static_cast<int>(label));
+      Fail();
+    }
+  }
+
+  if (!ok_ || !empty()) {
+    absl::StrAppend(&description, " invalid key=<", InvalidKey(original), ">");
+
+  } else if (!is_terminated) {
+    absl::StrAppend(&description, " incomplete key");
+  }
+
+  absl::StrAppend(&description, "]");
+  return description;
+}
+
+class Writer {
+ public:
+  std::string result() const {
+    return dest_;
+  }
+
+  void WriteTerminator() {
+    OrderedCode::WriteSignedNumIncreasing(&dest_, ComponentLabel::Terminator);
+  }
+
+  void WriteTableName(const char* table_name) {
+    WriteLabeledString(ComponentLabel::TableName, table_name);
+  }
+
+  void WriteBatchId(model::BatchId batch_id) {
+    WriteLabeledInt32(ComponentLabel::BatchId, batch_id);
+  }
+
+  void WriteCanonicalId(absl::string_view canonical_id) {
+    WriteLabeledString(ComponentLabel::CanonicalId, canonical_id);
+  }
+
+  void WriteTargetId(model::TargetId target_id) {
+    WriteLabeledInt32(ComponentLabel::TargetId, target_id);
+  }
+
+  void WriteUserId(absl::string_view user_id) {
+    WriteLabeledString(ComponentLabel::UserId, user_id);
+  }
+
+  void WriteCollectionId(absl::string_view collection_id) {
+    WriteLabeledString(ComponentLabel::CollectionId, collection_id);
+  }
+
+  void WriteDocumentId(absl::string_view document_id) {
+    WriteLabeledString(ComponentLabel::DocumentId, document_id);
+  }
+
+  void WriteSnapshotVersion(model::SnapshotVersion snapshot_version) {
+    WriteComponentLabel(ComponentLabel::SnapshotVersion);
+    OrderedCode::WriteSignedNumIncreasing(
+        &dest_, snapshot_version.timestamp().seconds());
+    OrderedCode::WriteSignedNumIncreasing(
+        &dest_, snapshot_version.timestamp().nanoseconds());
+  }
+
+  void WriteBundleId(absl::string_view bundle_id) {
+    WriteLabeledString(ComponentLabel::BundleId, bundle_id);
+  }
+
+  void WriteQueryName(absl::string_view query_name) {
+    WriteLabeledString(ComponentLabel::QueryName, query_name);
+  }
+
+  /**
+   * For each segment in the given resource path writes a
+   * ComponentLabel::PathSegment component label and a string containing the
+   * path segment.
+   */
+  void WriteResourcePath(const ResourcePath& path) {
+    for (const auto& segment : path) {
+      WriteComponentLabel(ComponentLabel::PathSegment);
+      OrderedCode::WriteString(&dest_, segment);
+    }
+  }
+
+ private:
+  /** Writes a component label to the given key destination. */
+  void WriteComponentLabel(ComponentLabel label) {
+    OrderedCode::WriteSignedNumIncreasing(&dest_, label);
+  }
+
+  /**
+   * Writes a component label and a signed integer to the given key destination.
+   */
+  void WriteLabeledInt32(ComponentLabel label, int32_t value) {
+    WriteComponentLabel(label);
+    OrderedCode::WriteSignedNumIncreasing(&dest_, value);
+  }
+
+  /**
+   * Writes a component label and an encoded string to the given key
+   * destination.
+   */
+  void WriteLabeledString(ComponentLabel label, absl::string_view value) {
+    WriteComponentLabel(label);
+    OrderedCode::WriteString(&dest_, value);
+  }
+
+  std::string dest_;
+};
+
+}  // namespace
+
+std::string DescribeKey(leveldb::Slice key) {
+  Reader reader{key};
+  return reader.Describe();
+}
+
+std::string DescribeKey(absl::string_view key) {
+  return DescribeKey(MakeSlice(key));
+}
+
+std::string DescribeKey(const std::string& key) {
+  return DescribeKey(leveldb::Slice{key});
+}
+
+std::string DescribeKey(const char* key) {
+  return DescribeKey(leveldb::Slice{key});
+}
+
+std::string LevelDbVersionKey::Key() {
+  Writer writer;
+  writer.WriteTableName(kVersionGlobalTable);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+std::string LevelDbMutationKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kMutationsTable);
+  return writer.result();
+}
+
+std::string LevelDbMutationKey::KeyPrefix(absl::string_view user_id) {
+  Writer writer;
+  writer.WriteTableName(kMutationsTable);
+  writer.WriteUserId(user_id);
+  return writer.result();
+}
+
+std::string LevelDbMutationKey::Key(absl::string_view user_id,
+                                    model::BatchId batch_id) {
+  Writer writer;
+  writer.WriteTableName(kMutationsTable);
+  writer.WriteUserId(user_id);
+  writer.WriteBatchId(batch_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbMutationKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kMutationsTable);
+  user_id_ = reader.ReadUserId();
+  batch_id_ = reader.ReadBatchId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbDocumentMutationKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kDocumentMutationsTable);
+  return writer.result();
+}
+
+std::string LevelDbDocumentMutationKey::KeyPrefix(absl::string_view user_id) {
+  Writer writer;
+  writer.WriteTableName(kDocumentMutationsTable);
+  writer.WriteUserId(user_id);
+  return writer.result();
+}
+
+std::string LevelDbDocumentMutationKey::KeyPrefix(
+    absl::string_view user_id, const ResourcePath& resource_path) {
+  Writer writer;
+  writer.WriteTableName(kDocumentMutationsTable);
+  writer.WriteUserId(user_id);
+  writer.WriteResourcePath(resource_path);
+  return writer.result();
+}
+
+std::string LevelDbDocumentMutationKey::Key(absl::string_view user_id,
+                                            const DocumentKey& document_key,
+                                            model::BatchId batch_id) {
+  Writer writer;
+  writer.WriteTableName(kDocumentMutationsTable);
+  writer.WriteUserId(user_id);
+  writer.WriteResourcePath(document_key.path());
+  writer.WriteBatchId(batch_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbDocumentMutationKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kDocumentMutationsTable);
+  user_id_ = reader.ReadUserId();
+  document_key_ = reader.ReadDocumentKey();
+  batch_id_ = reader.ReadBatchId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbMutationQueueKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kMutationQueuesTable);
+  return writer.result();
+}
+
+std::string LevelDbMutationQueueKey::Key(absl::string_view user_id) {
+  Writer writer;
+  writer.WriteTableName(kMutationQueuesTable);
+  writer.WriteUserId(user_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbMutationQueueKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kMutationQueuesTable);
+  user_id_ = reader.ReadUserId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbTargetGlobalKey::Key() {
+  Writer writer;
+  writer.WriteTableName(kTargetGlobalTable);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbTargetGlobalKey::Decode(leveldb::Slice key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kTargetGlobalTable);
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbTargetKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kTargetsTable);
+  return writer.result();
+}
+
+std::string LevelDbTargetKey::Key(model::TargetId target_id) {
+  Writer writer;
+  writer.WriteTableName(kTargetsTable);
+  writer.WriteTargetId(target_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbTargetKey::Decode(leveldb::Slice key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kTargetsTable);
+  target_id_ = reader.ReadTargetId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbQueryTargetKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kQueryTargetsTable);
+  return writer.result();
+}
+
+std::string LevelDbQueryTargetKey::KeyPrefix(absl::string_view canonical_id) {
+  Writer writer;
+  writer.WriteTableName(kQueryTargetsTable);
+  writer.WriteCanonicalId(canonical_id);
+  return writer.result();
+}
+
+std::string LevelDbQueryTargetKey::Key(absl::string_view canonical_id,
+                                       model::TargetId target_id) {
+  Writer writer;
+  writer.WriteTableName(kQueryTargetsTable);
+  writer.WriteCanonicalId(canonical_id);
+  writer.WriteTargetId(target_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbQueryTargetKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kQueryTargetsTable);
+  canonical_id_ = reader.ReadCanonicalId();
+  target_id_ = reader.ReadTargetId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbTargetDocumentKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kTargetDocumentsTable);
+  return writer.result();
+}
+
+std::string LevelDbTargetDocumentKey::KeyPrefix(model::TargetId target_id) {
+  Writer writer;
+  writer.WriteTableName(kTargetDocumentsTable);
+  writer.WriteTargetId(target_id);
+  return writer.result();
+}
+
+std::string LevelDbTargetDocumentKey::Key(model::TargetId target_id,
+                                          const DocumentKey& document_key) {
+  Writer writer;
+  writer.WriteTableName(kTargetDocumentsTable);
+  writer.WriteTargetId(target_id);
+  writer.WriteResourcePath(document_key.path());
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbTargetDocumentKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kTargetDocumentsTable);
+  target_id_ = reader.ReadTargetId();
+  document_key_ = reader.ReadDocumentKey();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbDocumentTargetKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kDocumentTargetsTable);
+  return writer.result();
+}
+
+std::string LevelDbDocumentTargetKey::KeyPrefix(
+    const ResourcePath& resource_path) {
+  Writer writer;
+  writer.WriteTableName(kDocumentTargetsTable);
+  writer.WriteResourcePath(resource_path);
+  return writer.result();
+}
+
+std::string LevelDbDocumentTargetKey::Key(const DocumentKey& document_key,
+                                          model::TargetId target_id) {
+  Writer writer;
+  writer.WriteTableName(kDocumentTargetsTable);
+  writer.WriteResourcePath(document_key.path());
+  writer.WriteTargetId(target_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+std::string LevelDbDocumentTargetKey::SentinelKey(
+    const DocumentKey& document_key) {
+  return Key(document_key, kInvalidTargetId);
+}
+
+std::string LevelDbDocumentTargetKey::EncodeSentinelValue(
+    model::ListenSequenceNumber sequence_number) {
+  std::string encoded;
+  OrderedCode::WriteSignedNumIncreasing(&encoded, sequence_number);
+  return encoded;
+}
+
+model::ListenSequenceNumber LevelDbDocumentTargetKey::DecodeSentinelValue(
+    absl::string_view slice) {
+  model::ListenSequenceNumber decoded;
+  if (!OrderedCode::ReadSignedNumIncreasing(&slice, &decoded)) {
+    HARD_FAIL("Failed to read sequence number from a sentinel row");
+  }
+  return decoded;
+}
+
+bool LevelDbDocumentTargetKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kDocumentTargetsTable);
+  document_key_ = reader.ReadDocumentKey();
+  target_id_ = reader.ReadTargetId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbRemoteDocumentKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kRemoteDocumentsTable);
+  return writer.result();
+}
+
+std::string LevelDbRemoteDocumentKey::KeyPrefix(
+    const ResourcePath& resource_path) {
+  Writer writer;
+  writer.WriteTableName(kRemoteDocumentsTable);
+  writer.WriteResourcePath(resource_path);
+  return writer.result();
+}
+
+std::string LevelDbRemoteDocumentKey::Key(const DocumentKey& key) {
+  Writer writer;
+  writer.WriteTableName(kRemoteDocumentsTable);
+  writer.WriteResourcePath(key.path());
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbRemoteDocumentKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kRemoteDocumentsTable);
+  document_key_ = reader.ReadDocumentKey();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbCollectionParentKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kCollectionParentsTable);
+  return writer.result();
+}
+
+std::string LevelDbCollectionParentKey::KeyPrefix(
+    absl::string_view collection_id) {
+  Writer writer;
+  writer.WriteTableName(kCollectionParentsTable);
+  writer.WriteCollectionId(collection_id);
+  return writer.result();
+}
+
+std::string LevelDbCollectionParentKey::Key(absl::string_view collection_id,
+                                            const ResourcePath& parent) {
+  Writer writer;
+  writer.WriteTableName(kCollectionParentsTable);
+  writer.WriteCollectionId(collection_id);
+  writer.WriteResourcePath(parent);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbCollectionParentKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kCollectionParentsTable);
+  collection_id_ = reader.ReadCollectionId();
+  parent_ = reader.ReadResourcePath();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbRemoteDocumentReadTimeKey::KeyPrefix(
+    const model::ResourcePath& collection_path,
+    model::SnapshotVersion read_time) {
+  Writer writer;
+  writer.WriteTableName(kRemoteDocumentReadTimeTable);
+  writer.WriteResourcePath(collection_path);
+  writer.WriteSnapshotVersion(read_time);
+  return writer.result();
+}
+
+std::string LevelDbRemoteDocumentReadTimeKey::Key(
+    const model::ResourcePath& collection_path,
+    model::SnapshotVersion read_time,
+    absl::string_view document_id) {
+  Writer writer;
+  writer.WriteTableName(kRemoteDocumentReadTimeTable);
+  writer.WriteResourcePath(collection_path);
+  writer.WriteSnapshotVersion(read_time);
+  writer.WriteDocumentId(document_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbRemoteDocumentReadTimeKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kRemoteDocumentReadTimeTable);
+  collection_path_ = reader.ReadResourcePath();
+  read_time_ = reader.ReadSnapshotVersion();
+  document_id_ = reader.ReadDocumentId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbBundleKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kBundlesTable);
+  return writer.result();
+}
+
+std::string LevelDbBundleKey::Key(absl::string_view bundle_id) {
+  Writer writer;
+  writer.WriteTableName(kBundlesTable);
+  writer.WriteBundleId(bundle_id);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbBundleKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kBundlesTable);
+  bundle_id_ = reader.ReadBundleId();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+std::string LevelDbNamedQueryKey::KeyPrefix() {
+  Writer writer;
+  writer.WriteTableName(kNamedQueriesTable);
+  return writer.result();
+}
+
+std::string LevelDbNamedQueryKey::Key(absl::string_view query_name) {
+  Writer writer;
+  writer.WriteTableName(kNamedQueriesTable);
+  writer.WriteQueryName(query_name);
+  writer.WriteTerminator();
+  return writer.result();
+}
+
+bool LevelDbNamedQueryKey::Decode(absl::string_view key) {
+  Reader reader{key};
+  reader.ReadTableNameMatching(kNamedQueriesTable);
+  name_ = reader.ReadQueryName();
+  reader.ReadTerminator();
+  return reader.ok();
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.h
new file mode 100644
index 0000000..ffe9274
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_key.h	
@@ -0,0 +1,720 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_KEY_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_KEY_H_
+
+#include <string>
+
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/types.h"
+#include "absl/strings/string_view.h"
+#include "leveldb/slice.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+// Utilities for encoding and decoding LevelDB row keys and key prefixes.
+//
+// LevelDB keys are strings, so all the routines in here operate on strings to
+// be able to produce and consume leveldb APIs directly.
+//
+// All leveldb logical tables should have their keys structures described in
+// this file.
+//
+// mutations:
+//   - table_name: string = "mutation"
+//   - user_id: string
+//   - batch_id: model::BatchId
+//
+// document_mutations:
+//   - table_name: string = "document_mutation"
+//   - user_id: string
+//   - path: ResourcePath
+//   - batch_id: model::BatchId
+//
+// mutation_queues:
+//   - table_name: string = "mutation_queue"
+//   - user_id: string
+//
+// targets:
+//   - table_name: string = "target"
+//   - target_id: model::TargetId
+//
+// target_globals:
+//   - table_name: string = "target_global"
+//
+// query_targets:
+//   - table_name: string = "query_target"
+//   - canonical_id: string
+//   - target_id: model::TargetId
+//
+// target_documents:
+//   - table_name: string = "target_document"
+//   - target_id: model::TargetId
+//   - path: ResourcePath
+//
+// document_targets:
+//   - table_name: string = "document_target"
+//   - path: ResourcePath
+//   - target_id: model::TargetId
+//
+// remote_documents:
+//   - table_name: string = "remote_document"
+//   - path: ResourcePath
+//
+// collection_parents:
+//   - table_name: string = "collection_parent"
+//   - collectionId: string
+//   - parent: ResourcePath
+//
+// remote_document_read_time:
+//   - table_name: string = "remote_document_read_time"
+//   - collection: ResourcePath
+//   - read_time: SnapshotVersion
+//   - document_id: string
+//
+// bundles:
+//   - table_name: string = "bundles"
+//   - bundle_id: string
+//
+// named_queries:
+//   - table_name: string = "named_queries"
+//   - name: string
+
+/**
+ * Parses the given key and returns a human readable description of its
+ * contents, suitable for error messages and logging.
+ */
+std::string DescribeKey(leveldb::Slice key);
+std::string DescribeKey(absl::string_view key);
+std::string DescribeKey(const std::string& key);
+std::string DescribeKey(const char* key);
+
+/** A key to a singleton row storing the version of the schema. */
+class LevelDbVersionKey {
+ public:
+  /**
+   * Returns the key pointing to the singleton row storing the schema version.
+   */
+  static std::string Key();
+};
+
+/** A key in the mutations table. */
+class LevelDbMutationKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key in the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key prefix that points just before the first key for the given
+   * user_id.
+   */
+  static std::string KeyPrefix(absl::string_view user_id);
+
+  /** Creates a complete key that points to a specific user_id and batch_id. */
+  static std::string Key(absl::string_view user_id, model::BatchId batch_id);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The user that owns the mutation batches. */
+  const std::string& user_id() const {
+    return user_id_;
+  }
+
+  /** The batch_id of the batch. */
+  model::BatchId batch_id() const {
+    return batch_id_;
+  }
+
+ private:
+  std::string user_id_;
+  model::BatchId batch_id_ = model::kBatchIdUnknown;
+};
+
+/**
+ * A key in the document mutations index, which stores the batches in which
+ * documents are mutated.
+ */
+class LevelDbDocumentMutationKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key in the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key prefix that points just before the first key for the given
+   * user_id.
+   */
+  static std::string KeyPrefix(absl::string_view user_id);
+
+  /**
+   * Creates a key prefix that points just before the first key for the user_id
+   * and resource path.
+   *
+   * Note that this uses a ResourcePath rather than an DocumentKey in order to
+   * allow prefix scans over a collection. However a naive scan over those
+   * results isn't useful since it would match both immediate children of the
+   * collection and any subcollections.
+   */
+  static std::string KeyPrefix(absl::string_view user_id,
+                               const model::ResourcePath& resource_path);
+
+  /**
+   * Creates a complete key that points to a specific user_id, document key,
+   * and batch_id.
+   */
+  static std::string Key(absl::string_view user_id,
+                         const model::DocumentKey& document_key,
+                         model::BatchId batch_id);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The user that owns the mutation batches. */
+  const std::string& user_id() const {
+    return user_id_;
+  }
+
+  /** The path to the document, as encoded in the key. */
+  const model::DocumentKey& document_key() const {
+    return document_key_;
+  }
+
+  /** The batch_id in which the document participates. */
+  model::BatchId batch_id() const {
+    return batch_id_;
+  }
+
+ private:
+  std::string user_id_;
+  model::DocumentKey document_key_;
+  model::BatchId batch_id_ = model::kBatchIdUnknown;
+};
+
+/**
+ * A key in the mutation_queues table.
+ *
+ * Note that where `mutation_queues` table contains one row about each queue,
+ * the `mutations` table contains the actual mutation batches themselves.
+ */
+class LevelDbMutationQueueKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key in the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a complete key that points to a specific mutation queue entry for
+   * the given user_id.
+   */
+  static std::string Key(absl::string_view user_id);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  const std::string& user_id() const {
+    return user_id_;
+  }
+
+ private:
+  // Deliberately uninitialized: will be assigned in Decode
+  std::string user_id_;
+};
+
+/**
+ * A key in the target globals table, a record of global values across all
+ * targets.
+ */
+class LevelDbTargetGlobalKey {
+ public:
+  /** Creates a key that points to the single target global row. */
+  static std::string Key();
+
+  /**
+   * Decodes the contents of a target global key, essentially just verifying
+   * that the key has the correct table name.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(leveldb::Slice key);
+};
+
+/** A key in the targets table. */
+class LevelDbTargetKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key in the table.
+   */
+  static std::string KeyPrefix();
+
+  /** Creates a complete key that points to a specific target, by target_id. */
+  static std::string Key(model::TargetId target_id);
+
+  /**
+   * Decodes the contents of a target key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(leveldb::Slice key);
+
+  model::TargetId target_id() {
+    return target_id_;
+  }
+
+ private:
+  model::TargetId target_id_ = 0;
+};
+
+/**
+ * A key in the query targets table, an index of canonical_ids to the targets
+ * they may match. This is not a unique mapping because canonical_id does not
+ * promise a unique name for all possible queries.
+ */
+class LevelDbQueryTargetKey {
+ public:
+  /**
+   * Creates a key that contains just the query targets table prefix and points
+   * just before the first key.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key that points to the first query-target association for a
+   * canonical_id.
+   */
+  static std::string KeyPrefix(absl::string_view canonical_id);
+
+  /** Creates a key that points to a specific query-target entry. */
+  static std::string Key(absl::string_view canonical_id,
+                         model::TargetId target_id);
+
+  /**
+   * Decodes the contents of a query target key, storing the decoded values in
+   * this instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The canonical_id derived from the query. */
+  const std::string& canonical_id() const {
+    return canonical_id_;
+  }
+
+  /** The target_id identifying a target. */
+  model::TargetId target_id() const {
+    return target_id_;
+  }
+
+ private:
+  // Deliberately uninitialized: will be assigned in Decode
+  std::string canonical_id_;
+  model::TargetId target_id_ = 0;
+};
+
+/**
+ * A key in the target documents table, an index of target_ids to the documents
+ * they contain.
+ */
+class LevelDbTargetDocumentKey {
+ public:
+  /**
+   * Creates a key that contains just the target documents table prefix and
+   * points just before the first key.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key that points to the first target-document association for a
+   * target_id.
+   */
+  static std::string KeyPrefix(model::TargetId target_id);
+
+  /** Creates a key that points to a specific target-document entry. */
+  static std::string Key(model::TargetId target_id,
+                         const model::DocumentKey& document_key);
+
+  /**
+   * Decodes the contents of a target document key, storing the decoded values
+   * in this instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The target_id identifying a target. */
+  model::TargetId target_id() {
+    return target_id_;
+  }
+
+  /** The path to the document, as encoded in the key. */
+  const model::DocumentKey& document_key() {
+    return document_key_;
+  }
+
+ private:
+  // Deliberately uninitialized: will be assigned in Decode
+  model::TargetId target_id_ = 0;
+  model::DocumentKey document_key_;
+};
+
+/**
+ * A key in the document targets table, an index from documents to the targets
+ * that contain them.
+ */
+class LevelDbDocumentTargetKey {
+ public:
+  /**
+   * Creates a key that contains just the document targets table prefix and
+   * points just before the first key.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key that points to the first document-target association for
+   * document.
+   */
+  static std::string KeyPrefix(const model::ResourcePath& resource_path);
+
+  /** Creates a key that points to a specific document-target entry. */
+  static std::string Key(const model::DocumentKey& document_key,
+                         model::TargetId target_id);
+
+  /**
+   * Creates a key that points to the sentinel row for the given document: a
+   * document-target entry with a special, invalid target_id.
+   */
+  static std::string SentinelKey(const model::DocumentKey& document_key);
+
+  /**
+   * Given a sequence number, encodes it for storage in a sentinel row.
+   */
+  static std::string EncodeSentinelValue(
+      model::ListenSequenceNumber sequence_number);
+
+  /**
+   * Given an encoded sentinel row, return the sequence number.
+   */
+  static model::ListenSequenceNumber DecodeSentinelValue(
+      absl::string_view slice);
+
+  /**
+   * Decodes the contents of a document target key, storing the decoded values
+   * in this instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The target_id identifying a target. */
+  model::TargetId target_id() const {
+    return target_id_;
+  }
+
+  /**
+   * Returns true if the target_id in this row is a sentintel target ID.
+   */
+  bool IsSentinel() {
+    return target_id_ == kInvalidTargetId;
+  }
+
+  /** The path to the document, as encoded in the key. */
+  const model::DocumentKey& document_key() const {
+    return document_key_;
+  }
+
+ private:
+  // Used for sentinel row for a document in the document target index. No
+  // target has the ID 0, and it will sort first in the list of targets for a
+  // document.
+  static constexpr model::TargetId kInvalidTargetId = 0;
+
+  // Deliberately uninitialized: will be assigned in Decode
+  model::TargetId target_id_;
+  model::DocumentKey document_key_;
+};
+
+/** A key in the remote documents table. */
+class LevelDbRemoteDocumentKey {
+ public:
+  /**
+   * Creates a key that contains just the remote documents table prefix and
+   * points just before the first remote document key.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a complete key that points to a specific document. The document_key
+   * must have an even number of path segments.
+   */
+  static std::string Key(const model::DocumentKey& document_key);
+
+  /**
+   * Creates a key prefix that contains a part of a document path. Odd numbers
+   * of segments create a collection key prefix, while an even number of
+   * segments create a document key prefix. Note that a document key prefix will
+   * match the document itself and any documents that exist in its
+   * subcollections.
+   */
+  static std::string KeyPrefix(const model::ResourcePath& resource_path);
+
+  /**
+   * Decodes the contents of a remote document key, storing the decoded values
+   * in this instance. This can only decode complete document paths (i.e. the
+   * result of Key()).
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The path to the document, as encoded in the key. */
+  const model::DocumentKey& document_key() const {
+    return document_key_;
+  }
+
+ private:
+  // Deliberately uninitialized: will be assigned in Decode
+  model::DocumentKey document_key_;
+};
+
+/**
+ * A key in the collection parents index, which stores an association between a
+ * Collection ID (e.g. 'messages') to a parent path (e.g. '/chats/123') that
+ * contains it as a (sub)collection. This is used to efficiently find all
+ * collections to query when performing a Collection Group query. Note that the
+ * parent path will be an empty path in the case of root-level collections.
+ */
+class LevelDbCollectionParentKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key in the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key prefix that points just before the first key for the given
+   * collection_id.
+   */
+  static std::string KeyPrefix(absl::string_view collection_id);
+
+  /**
+   * Creates a complete key that points to a specific collection_id and parent.
+   */
+  static std::string Key(absl::string_view collection_id,
+                         const model::ResourcePath& parent);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The collection_id, as encoded in the key. */
+  const std::string& collection_id() const {
+    return collection_id_;
+  }
+
+  /** The parent path, as encoded in the key. */
+  const model::ResourcePath& parent() const {
+    return parent_;
+  }
+
+ private:
+  // Deliberately uninitialized: will be assigned in Decode
+  std::string collection_id_;
+  model::ResourcePath parent_;
+};
+
+/**
+ * A key in the remote documents read time table, storing the collection path,
+ * read time and document ID for each entry.
+ */
+class LevelDbRemoteDocumentReadTimeKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key for the given
+   * collection_path and read_time.
+   */
+  static std::string KeyPrefix(const model::ResourcePath& collection_path,
+                               model::SnapshotVersion read_time);
+
+  /**
+   * Creates a key that points to the key for the given collection_path,
+   * read_time and document_id.
+   */
+  static std::string Key(const model::ResourcePath& collection_path,
+                         model::SnapshotVersion read_time,
+                         absl::string_view document_id);
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The collection path for this entry. */
+  const model::ResourcePath& collection_path() const {
+    return collection_path_;
+  }
+
+  /** The read time for for this entry. */
+  model::SnapshotVersion read_time() const {
+    return read_time_;
+  }
+
+  /** The document ID for this entry. */
+  const std::string& document_id() const {
+    return document_id_;
+  }
+
+ private:
+  std::string document_id_;
+  model::ResourcePath collection_path_;
+  model::SnapshotVersion read_time_;
+};
+
+/**
+ * A key in the bundles table, storing the bundle Id for each entry.
+ */
+class LevelDbBundleKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key of the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key that points to the key for the given bundle id.
+   */
+  static std::string Key(absl::string_view bundle_id);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The bundle ID for this entry. */
+  const std::string& bundle_id() const {
+    return bundle_id_;
+  }
+
+ private:
+  std::string bundle_id_;
+};
+
+/**
+ * A key in the named_queries table, storing the query name for each entry.
+ */
+class LevelDbNamedQueryKey {
+ public:
+  /**
+   * Creates a key prefix that points just before the first key of the table.
+   */
+  static std::string KeyPrefix();
+
+  /**
+   * Creates a key that points to the key for the given query name.
+   */
+  static std::string Key(absl::string_view query_name);
+
+  /**
+   * Decodes the given complete key, storing the decoded values in this
+   * instance.
+   *
+   * @return true if the key successfully decoded, false otherwise. If false is
+   * returned, this instance is in an undefined state until the next call to
+   * `Decode()`.
+   */
+  ABSL_MUST_USE_RESULT
+  bool Decode(absl::string_view key);
+
+  /** The query name for this entry. */
+  const std::string& name() const {
+    return name_;
+  }
+
+ private:
+  std::string name_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_KEY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.cc
new file mode 100644
index 0000000..81c36e4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.cc	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_lru_reference_delegate.h"
+
+#include <set>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/listen_sequence.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::DocumentKey;
+using model::ListenSequenceNumber;
+using model::ResourcePath;
+using util::StatusOr;
+
+LevelDbLruReferenceDelegate::LevelDbLruReferenceDelegate(
+    LevelDbPersistence* persistence, LruParams lru_params)
+    : db_(persistence) {
+  gc_ = absl::make_unique<LruGarbageCollector>(this, lru_params);
+}
+
+// Explicit default the destructor after all forward declared types have been
+// fully declared.
+LevelDbLruReferenceDelegate::~LevelDbLruReferenceDelegate() = default;
+
+void LevelDbLruReferenceDelegate::Start() {
+  ListenSequenceNumber highest_sequence_number =
+      db_->target_cache()->highest_listen_sequence_number();
+  listen_sequence_ = absl::make_unique<ListenSequence>(highest_sequence_number);
+}
+
+void LevelDbLruReferenceDelegate::AddInMemoryPins(ReferenceSet* set) {
+  // We should be able to assert that additional_references_ is nullptr, but
+  // due to restarts in spec tests it would fail.
+  additional_references_ = set;
+}
+
+void LevelDbLruReferenceDelegate::AddReference(const DocumentKey& key) {
+  WriteSentinel(key);
+}
+
+void LevelDbLruReferenceDelegate::RemoveReference(const DocumentKey& key) {
+  WriteSentinel(key);
+}
+
+void LevelDbLruReferenceDelegate::RemoveMutationReference(
+    const DocumentKey& key) {
+  WriteSentinel(key);
+}
+
+void LevelDbLruReferenceDelegate::RemoveTarget(const TargetData& target_data) {
+  TargetData updated =
+      target_data.WithSequenceNumber(current_sequence_number());
+  db_->target_cache()->UpdateTarget(updated);
+}
+
+void LevelDbLruReferenceDelegate::UpdateLimboDocument(const DocumentKey& key) {
+  WriteSentinel(key);
+}
+
+ListenSequenceNumber LevelDbLruReferenceDelegate::current_sequence_number()
+    const {
+  HARD_ASSERT(current_sequence_number_ != kListenSequenceNumberInvalid,
+              "Asking for a sequence number outside of a transaction");
+  return current_sequence_number_;
+}
+
+void LevelDbLruReferenceDelegate::OnTransactionStarted(absl::string_view) {
+  HARD_ASSERT(current_sequence_number_ == kListenSequenceNumberInvalid,
+              "Previous sequence number is still in effect");
+  current_sequence_number_ = listen_sequence_->Next();
+}
+
+void LevelDbLruReferenceDelegate::OnTransactionCommitted() {
+  current_sequence_number_ = kListenSequenceNumberInvalid;
+}
+
+LruGarbageCollector* LevelDbLruReferenceDelegate::garbage_collector() {
+  return gc_.get();
+}
+
+StatusOr<int64_t> LevelDbLruReferenceDelegate::CalculateByteSize() {
+  return db_->CalculateByteSize();
+}
+
+size_t LevelDbLruReferenceDelegate::GetSequenceNumberCount() {
+  size_t total_count = db_->target_cache()->size();
+  EnumerateOrphanedDocuments(
+      [&total_count](const DocumentKey&, ListenSequenceNumber) {
+        total_count++;
+      });
+  return total_count;
+}
+
+void LevelDbLruReferenceDelegate::EnumerateTargetSequenceNumbers(
+    const SequenceNumberCallback& callback) {
+  db_->target_cache()->EnumerateSequenceNumbers(callback);
+}
+
+void LevelDbLruReferenceDelegate::EnumerateOrphanedDocuments(
+    const OrphanedDocumentCallback& callback) {
+  db_->target_cache()->EnumerateOrphanedDocuments(callback);
+}
+
+int LevelDbLruReferenceDelegate::RemoveOrphanedDocuments(
+    ListenSequenceNumber upper_bound) {
+  int count = 0;
+  db_->target_cache()->EnumerateOrphanedDocuments(
+      [&](const DocumentKey& key, ListenSequenceNumber sequence_number) {
+        if (sequence_number <= upper_bound) {
+          if (!IsPinned(key)) {
+            count++;
+            db_->remote_document_cache()->Remove(key);
+            RemoveSentinel(key);
+          }
+        }
+      });
+  return count;
+}
+
+int LevelDbLruReferenceDelegate::RemoveTargets(
+    ListenSequenceNumber sequence_number, const LiveQueryMap& live_queries) {
+  return static_cast<int>(
+      db_->target_cache()->RemoveTargets(sequence_number, live_queries));
+}
+
+bool LevelDbLruReferenceDelegate::IsPinned(const DocumentKey& key) {
+  if (additional_references_->ContainsKey(key)) {
+    return true;
+  }
+  return MutationQueuesContainKey(key);
+}
+
+bool LevelDbLruReferenceDelegate::MutationQueuesContainKey(
+    const DocumentKey& key) {
+  const std::set<std::string>& users = db_->users();
+  const ResourcePath& path = key.path();
+  std::string buffer;
+  auto it = db_->current_transaction()->NewIterator();
+  // For each user, if there is any batch that contains this document in any
+  // batch, we know it's pinned.
+  for (const std::string& user : users) {
+    std::string mutation_key =
+        LevelDbDocumentMutationKey::KeyPrefix(user, path);
+    it->Seek(mutation_key);
+    if (it->Valid() && absl::StartsWith(it->key(), mutation_key)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void LevelDbLruReferenceDelegate::RemoveSentinel(const DocumentKey& key) {
+  db_->current_transaction()->Delete(
+      LevelDbDocumentTargetKey::SentinelKey(key));
+}
+
+void LevelDbLruReferenceDelegate::WriteSentinel(const DocumentKey& key) {
+  std::string sentinel_key = LevelDbDocumentTargetKey::SentinelKey(key);
+  std::string encoded_sequence_number =
+      LevelDbDocumentTargetKey::EncodeSentinelValue(current_sequence_number());
+  db_->current_transaction()->Put(sentinel_key, encoded_sequence_number);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.h
new file mode 100644
index 0000000..df6d4de
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_lru_reference_delegate.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_LRU_REFERENCE_DELEGATE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_LRU_REFERENCE_DELEGATE_H_
+
+#include <memory>
+
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LevelDbPersistence;
+class ListenSequence;
+
+class LevelDbLruReferenceDelegate : public LruDelegate {
+ public:
+  LevelDbLruReferenceDelegate(LevelDbPersistence* persistence,
+                              LruParams lru_params);
+
+  ~LevelDbLruReferenceDelegate();
+
+  void Start();
+
+  // MARK: ReferenceDelegate methods
+
+  model::ListenSequenceNumber current_sequence_number() const override;
+
+  void AddInMemoryPins(ReferenceSet* set) override;
+
+  void AddReference(const model::DocumentKey& key) override;
+  void RemoveReference(const model::DocumentKey& key) override;
+  void RemoveMutationReference(const model::DocumentKey& key) override;
+  void RemoveTarget(const local::TargetData& target_data) override;
+
+  void UpdateLimboDocument(const model::DocumentKey& key) override;
+
+  void OnTransactionStarted(absl::string_view label) override;
+  void OnTransactionCommitted() override;
+
+  // MARK: LruDelegate methods
+
+  LruGarbageCollector* garbage_collector() override;
+
+  util::StatusOr<int64_t> CalculateByteSize() override;
+  size_t GetSequenceNumberCount() override;
+
+  void EnumerateTargetSequenceNumbers(
+      const SequenceNumberCallback& callback) override;
+  void EnumerateOrphanedDocuments(
+      const OrphanedDocumentCallback& callback) override;
+
+  int RemoveOrphanedDocuments(model::ListenSequenceNumber upper_bound) override;
+  int RemoveTargets(model::ListenSequenceNumber sequence_number,
+                    const LiveQueryMap& live_queries) override;
+
+ private:
+  bool IsPinned(const model::DocumentKey& key);
+
+  bool MutationQueuesContainKey(const model::DocumentKey& key);
+
+  void RemoveSentinel(const model::DocumentKey& key);
+  void WriteSentinel(const model::DocumentKey& key);
+
+  std::unique_ptr<LruGarbageCollector> gc_;
+
+  // Persistence instances are owned by FirestoreClient
+  LevelDbPersistence* db_;
+
+  // Additional references are owned by LocalStore
+  ReferenceSet* additional_references_;
+
+  // This needs to be a pointer because initialization is delayed until after
+  // we read from the target cache.
+  std::unique_ptr<ListenSequence> listen_sequence_;
+
+  // The current sequence number for the currently active transaction. If no
+  // transaction is active, resets back to kListenSequenceNumberInvalid.
+  model::ListenSequenceNumber current_sequence_number_ =
+      kListenSequenceNumberInvalid;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_LRU_REFERENCE_DELEGATE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.cc
new file mode 100644
index 0000000..1ade190
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.cc	
@@ -0,0 +1,444 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_migrations.h"
+
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/target.nanopb.h"
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/memory_index_manager.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using leveldb::Status;
+using model::DocumentKey;
+using model::ResourcePath;
+using nanopb::Message;
+using nanopb::StringReader;
+
+/**
+ * Schema version for the iOS client.
+ *
+ * Note that tables aren't a concept in LevelDB. They exist in our schema as
+ * just prefixes on keys. This means tables don't need to be created but they
+ * also can't easily be dropped and re-created.
+ *
+ * Migrations:
+ *   * Migration 1 used to ensure the target_global row existed, without
+ *     clearing it. No longer required because migration 3 unconditionally
+ *     clears it.
+ *   * Migration 2 used to ensure that the target_global row had a correct count
+ *     of targets. No longer required because migration 3 deletes them all.
+ *   * Migration 3 deletes the entire query cache to deal with cache corruption
+ *     related to limbo resolution. Addresses
+ *     https://github.com/firebase/firebase-ios-sdk/issues/1548.
+ *   * Migration 4 ensures that every document in the remote document cache
+ *     has a sentinel row with a sequence number.
+ *   * Migration 5 drops held write acks.
+ *   * Migration 6 populates the collection_parents index.
+ *   * Migration 7 rewrites query_targets canonical ids in new format.
+ */
+const LevelDbMigrations::SchemaVersion kSchemaVersion = 7;
+
+/**
+ * Save the given version number as the current version of the schema of the
+ * database.
+ * @param version The version to save
+ * @param transaction The transaction in which to save the new version number
+ */
+void SaveVersion(LevelDbMigrations::SchemaVersion version,
+                 LevelDbTransaction* transaction) {
+  std::string key = LevelDbVersionKey::Key();
+  std::string version_string = std::to_string(version);
+  transaction->Put(key, version_string);
+}
+
+void DeleteEverythingWithPrefix(const std::string& prefix, leveldb::DB* db) {
+  bool more_deletes = true;
+  while (more_deletes) {
+    LevelDbTransaction transaction(db, "Delete everything with prefix");
+    auto it = transaction.NewIterator();
+
+    more_deletes = false;
+    for (it->Seek(prefix); it->Valid() && absl::StartsWith(it->key(), prefix);
+         it->Next()) {
+      if (transaction.changed_keys() >= 1000) {
+        more_deletes = true;
+        break;
+      }
+      transaction.Delete(it->key());
+    }
+
+    transaction.Commit();
+  }
+}
+
+/** Migration 3. */
+void ClearQueryCache(leveldb::DB* db) {
+  DeleteEverythingWithPrefix(LevelDbTargetKey::KeyPrefix(), db);
+  DeleteEverythingWithPrefix(LevelDbDocumentTargetKey::KeyPrefix(), db);
+  DeleteEverythingWithPrefix(LevelDbTargetDocumentKey::KeyPrefix(), db);
+  DeleteEverythingWithPrefix(LevelDbQueryTargetKey::KeyPrefix(), db);
+
+  LevelDbTransaction transaction(db, "Drop query cache");
+
+  // Reset the target global entry too (to reset the target count).
+  firestore_client_TargetGlobal target_global{};
+
+  nanopb::StringWriter writer;
+  writer.Write(firestore_client_TargetGlobal_fields, &target_global);
+  transaction.Put(LevelDbTargetGlobalKey::Key(), writer.Release());
+
+  SaveVersion(3, &transaction);
+  transaction.Commit();
+}
+
+/**
+ * Removes document associations for the given user's mutation queue for
+ * any mutation with a `batch_id` less than or equal to
+ * `last_acknowledged_batch_id`.
+ */
+void RemoveMutationDocuments(LevelDbTransaction* transaction,
+                             absl::string_view user_id,
+                             int32_t last_acknowledged_batch_id) {
+  LevelDbDocumentMutationKey doc_key;
+  std::string prefix = LevelDbDocumentMutationKey::KeyPrefix(user_id);
+
+  auto it = transaction->NewIterator();
+  it->Seek(prefix);
+  for (; it->Valid() && absl::StartsWith(it->key(), prefix); it->Next()) {
+    HARD_ASSERT(doc_key.Decode(it->key()),
+                "Failed to decode document mutation key");
+    if (doc_key.batch_id() <= last_acknowledged_batch_id) {
+      transaction->Delete(it->key());
+    }
+  }
+}
+
+/**
+ * Removes mutation batches for the given user with a `batch_id` less than
+ * or equal to `last_acknowledged_batch_id`
+ */
+void RemoveMutationBatches(LevelDbTransaction* transaction,
+                           absl::string_view user_id,
+                           int32_t last_acknowledged_batch_id) {
+  std::string mutations_key = LevelDbMutationKey::KeyPrefix(user_id);
+  std::string last_key =
+      LevelDbMutationKey::Key(user_id, last_acknowledged_batch_id);
+  auto it = transaction->NewIterator();
+  it->Seek(mutations_key);
+  for (; it->Valid() && it->key() <= last_key; it->Next()) {
+    transaction->Delete(it->key());
+  }
+}
+
+/** Migration 5. */
+void RemoveAcknowledgedMutations(leveldb::DB* db) {
+  LevelDbTransaction transaction(db, "remove acknowledged mutations");
+  std::string mutation_queue_start = LevelDbMutationQueueKey::KeyPrefix();
+
+  LevelDbMutationQueueKey key;
+
+  auto it = transaction.NewIterator();
+  it->Seek(mutation_queue_start);
+  for (; it->Valid() && absl::StartsWith(it->key(), mutation_queue_start);
+       it->Next()) {
+    HARD_ASSERT(key.Decode(it->key()), "Failed to decode mutation queue key");
+    StringReader reader(it->value());
+    auto mutation_queue =
+        Message<firestore_client_MutationQueue>::TryParse(&reader);
+    HARD_ASSERT(reader.status().ok(), "Failed to deserialize MutationQueue");
+    RemoveMutationBatches(&transaction, key.user_id(),
+                          mutation_queue->last_acknowledged_batch_id);
+    RemoveMutationDocuments(&transaction, key.user_id(),
+                            mutation_queue->last_acknowledged_batch_id);
+  }
+
+  SaveVersion(5, &transaction);
+  transaction.Commit();
+}
+
+/**
+ * Reads the highest sequence number from the target global row.
+ */
+model::ListenSequenceNumber GetHighestSequenceNumber(
+    LevelDbTransaction* transaction) {
+  std::string bytes;
+  transaction->Get(LevelDbTargetGlobalKey::Key(), &bytes);
+
+  StringReader reader(bytes);
+  auto target_global =
+      Message<firestore_client_TargetGlobal>::TryParse(&reader);
+  return target_global->highest_listen_sequence_number;
+}
+
+/**
+ * Given a document key, ensure it has a sentinel row. If it doesn't have one,
+ * add it with the given value.
+ */
+void EnsureSentinelRow(LevelDbTransaction* transaction,
+                       const model::DocumentKey& key,
+                       const std::string& sentinel_value) {
+  std::string sentinel_key = LevelDbDocumentTargetKey::SentinelKey(key);
+  std::string unused_value;
+  if (transaction->Get(sentinel_key, &unused_value).IsNotFound()) {
+    transaction->Put(sentinel_key, sentinel_value);
+  }
+}
+
+/**
+ * Migration 4.
+ *
+ * Ensure each document in the remote document table has a corresponding
+ * sentinel row in the document target index.
+ */
+void EnsureSentinelRows(leveldb::DB* db) {
+  LevelDbTransaction transaction(db, "Ensure sentinel rows");
+
+  // Get the value we'll use for anything that's missing a row.
+  model::ListenSequenceNumber sequence_number =
+      GetHighestSequenceNumber(&transaction);
+  std::string sentinel_value =
+      LevelDbDocumentTargetKey::EncodeSentinelValue(sequence_number);
+
+  std::string documents_prefix = LevelDbRemoteDocumentKey::KeyPrefix();
+  auto it = transaction.NewIterator();
+  it->Seek(documents_prefix);
+  LevelDbRemoteDocumentKey document_key;
+  for (; it->Valid() && absl::StartsWith(it->key(), documents_prefix);
+       it->Next()) {
+    HARD_ASSERT(document_key.Decode(it->key()),
+                "Failed to decode document key");
+    EnsureSentinelRow(&transaction, document_key.document_key(),
+                      sentinel_value);
+  }
+  SaveVersion(4, &transaction);
+  transaction.Commit();
+}
+
+// Helper to add an index entry iff we haven't already written it (as determined
+// by the provided cache).
+void EnsureCollectionParentRow(LevelDbTransaction* transaction,
+                               MemoryCollectionParentIndex* cache,
+                               const DocumentKey& key) {
+  const ResourcePath& collection_path = key.path().PopLast();
+  if (cache->Add(collection_path)) {
+    std::string collection_id = collection_path.last_segment();
+    ResourcePath parent_path = collection_path.PopLast();
+
+    std::string key =
+        LevelDbCollectionParentKey::Key(collection_id, parent_path);
+    std::string empty_buffer;
+    transaction->Put(key, empty_buffer);
+  }
+}
+
+/**
+ * Migration 6.
+ *
+ * Creates appropriate LevelDbCollectionParentKey rows for all collections
+ * of documents in the remote document cache and mutation queue.
+ */
+void EnsureCollectionParentsIndex(leveldb::DB* db) {
+  LevelDbTransaction transaction(db, "Ensure Collection Parents Index");
+
+  MemoryCollectionParentIndex cache;
+
+  // Index existing remote documents.
+  std::string documents_prefix = LevelDbRemoteDocumentKey::KeyPrefix();
+  auto it = transaction.NewIterator();
+  it->Seek(documents_prefix);
+  LevelDbRemoteDocumentKey document_key;
+  for (; it->Valid() && absl::StartsWith(it->key(), documents_prefix);
+       it->Next()) {
+    HARD_ASSERT(document_key.Decode(it->key()),
+                "Failed to decode document key");
+
+    EnsureCollectionParentRow(&transaction, &cache,
+                              document_key.document_key());
+  }
+
+  // Index existing mutations.
+  std::string mutations_prefix = LevelDbDocumentMutationKey::KeyPrefix();
+  it = transaction.NewIterator();
+  it->Seek(mutations_prefix);
+  LevelDbDocumentMutationKey key;
+  for (; it->Valid() && absl::StartsWith(it->key(), mutations_prefix);
+       it->Next()) {
+    HARD_ASSERT(key.Decode(it->key()),
+                "Failed to decode document-mutation key");
+
+    EnsureCollectionParentRow(&transaction, &cache, key.document_key());
+  }
+
+  SaveVersion(6, &transaction);
+  transaction.Commit();
+}
+
+/**
+ * Returns a `TargetData` by reading the `targets` table, using the given key
+ * for `query_targets` as a foreign key.
+ */
+util::StatusOr<TargetData> ReadTargetData(
+    const LevelDbQueryTargetKey& query_target_key,
+    const LocalSerializer& serializer,
+    LevelDbTransaction& transaction) {
+  auto target_it = transaction.NewIterator();
+  const auto& target_key = LevelDbTargetKey::Key(query_target_key.target_id());
+  target_it->Seek(target_key);
+  if (!target_it->Valid()) {
+    return util::Status(
+        kErrorNotFound,
+        util::StringFormat(
+            "Dangling query-target reference found: seeking %s found %s",
+            DescribeKey(target_key), DescribeKey(target_it)));
+  }
+
+  StringReader reader{target_it->value()};
+  auto message = Message<firestore_client_Target>::TryParse(&reader);
+  if (!reader.ok()) {
+    return util::Status(kErrorDataLoss,
+                        util::StringFormat("Target proto failed to parse: %s",
+                                           reader.status().ToString()));
+  }
+  auto target_data = serializer.DecodeTargetData(&reader, *message);
+  if (!reader.ok()) {
+    return util::Status(
+        kErrorDataLoss,
+        util::StringFormat("Target failed to parse: %s, message: %s",
+                           reader.status().ToString(), message.ToString()));
+  }
+
+  return target_data;
+}
+
+/**
+ * Migration 7.
+ *
+ * Rewrites targets canonical IDs with new format.
+ */
+void RewriteTargetsCanonicalIds(leveldb::DB* db,
+                                const LocalSerializer& serializer) {
+  LevelDbTransaction transaction(db, "Rewrite Targets Canonical Ids");
+
+  std::string query_targets_prefix = LevelDbQueryTargetKey::KeyPrefix();
+  auto it = transaction.NewIterator();
+  it->Seek(query_targets_prefix);
+  LevelDbQueryTargetKey query_target_key;
+  for (; it->Valid() && absl::StartsWith(it->key(), query_targets_prefix);
+       it->Next()) {
+    HARD_ASSERT(query_target_key.Decode(it->key()),
+                "Failed to decode query_targets key");
+
+    util::StatusOr<TargetData> target_data =
+        ReadTargetData(query_target_key, serializer, transaction);
+    if (!target_data.ok()) {
+      LOG_WARN("Reading target data failed: %s",
+               target_data.status().error_message());
+      continue;
+    }
+
+    auto new_key = LevelDbQueryTargetKey::Key(
+        target_data.ValueOrDie().target().CanonicalId(),
+        target_data.ValueOrDie().target_id());
+
+    transaction.Delete(it->key());
+    std::string empty_buffer;
+    transaction.Put(new_key, empty_buffer);
+  }
+
+  transaction.Commit();
+}
+
+}  // namespace
+
+LevelDbMigrations::SchemaVersion LevelDbMigrations::ReadSchemaVersion(
+    leveldb::DB* db) {
+  LevelDbTransaction transaction(db, "Read schema version");
+  std::string key = LevelDbVersionKey::Key();
+  std::string version_string;
+  Status status = transaction.Get(key, &version_string);
+  if (status.IsNotFound()) {
+    return 0;
+  } else {
+    HARD_ASSERT(status.ok(),
+                "Failed to read version string from LevelDB, error: '%s'",
+                status.ToString());
+    return stoi(version_string);
+  }
+}
+
+void LevelDbMigrations::RunMigrations(leveldb::DB* db,
+                                      const LocalSerializer& serializer) {
+  RunMigrations(db, kSchemaVersion, serializer);
+}
+
+void LevelDbMigrations::RunMigrations(leveldb::DB* db,
+                                      SchemaVersion to_version,
+                                      const LocalSerializer& serializer) {
+  SchemaVersion from_version = ReadSchemaVersion(db);
+  // If this is a downgrade, just save the downgrade version so we can
+  // detect it when we go to upgrade again, allowing us to rerun the
+  // data migrations.
+  if (from_version > to_version) {
+    LevelDbTransaction transaction(db, "Save downgrade version");
+    SaveVersion(to_version, &transaction);
+    transaction.Commit();
+    return;
+  }
+
+  // This must run unconditionally because schema migrations were added to iOS
+  // after the first release. There may be clients that have never run any
+  // migrations that have existing targets.
+  if (from_version < 3 && to_version >= 3) {
+    ClearQueryCache(db);
+  }
+
+  if (from_version < 4 && to_version >= 4) {
+    EnsureSentinelRows(db);
+  }
+
+  if (from_version < 5 && to_version >= 5) {
+    RemoveAcknowledgedMutations(db);
+  }
+
+  if (from_version < 6 && to_version >= 6) {
+    EnsureCollectionParentsIndex(db);
+  }
+
+  if (from_version < 7 && to_version >= 7) {
+    RewriteTargetsCanonicalIds(db, serializer);
+  }
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.h
new file mode 100644
index 0000000..69b688e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_migrations.h	
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MIGRATIONS_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MIGRATIONS_H_
+
+#include <cstdint>
+
+#include "Firestore/core/src/local/leveldb_transaction.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "leveldb/db.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LevelDbMigrations {
+ public:
+  using SchemaVersion = int32_t;
+
+  /**
+   * Returns the current version of the schema for the given database
+   */
+  static SchemaVersion ReadSchemaVersion(leveldb::DB* db);
+
+  /**
+   * Runs any migrations needed to bring the given database up to the current
+   * schema version
+   */
+  static void RunMigrations(leveldb::DB* db, const LocalSerializer& serializer);
+
+  /**
+   * Runs any migrations needed to bring the given database up to the given
+   * schema version
+   */
+  static void RunMigrations(leveldb::DB* db,
+                            SchemaVersion version,
+                            const LocalSerializer& serializer);
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MIGRATIONS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.cc
new file mode 100644
index 0000000..194f98c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.cc	
@@ -0,0 +1,502 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_mutation_queue.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/leveldb_transaction.h"
+#include "Firestore/core/src/local/leveldb_util.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/util/string_util.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using auth::User;
+using core::Query;
+using leveldb::DB;
+using leveldb::Iterator;
+using leveldb::Status;
+using model::BatchId;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::kBatchIdUnknown;
+using model::Mutation;
+using model::MutationBatch;
+using model::ResourcePath;
+using nanopb::ByteString;
+using nanopb::Message;
+using nanopb::StringReader;
+
+BatchId LoadNextBatchIdFromDb(DB* db) {
+  // TODO(gsoltis): implement Prev() and SeekToLast() on
+  // LevelDbTransaction::Iterator, then port this to a transaction.
+  std::unique_ptr<Iterator> it(
+      db->NewIterator(LevelDbTransaction::DefaultReadOptions()));
+
+  std::string table_key = LevelDbMutationKey::KeyPrefix();
+
+  LevelDbMutationKey row_key;
+  BatchId max_batch_id = 0;
+
+  bool more_user_ids = false;
+  std::string next_user_id;
+
+  it->Seek(table_key);
+  if (it->Valid() && row_key.Decode(MakeStringView(it->key()))) {
+    more_user_ids = true;
+    next_user_id = row_key.user_id();
+  }
+
+  // This loop assumes that next_user_id contains the next username at the start
+  // of the iteration.
+  while (more_user_ids) {
+    // Compute the first key after the last mutation for next_user_id.
+    std::string user_end = LevelDbMutationKey::KeyPrefix(next_user_id);
+    user_end = util::PrefixSuccessor(user_end);
+
+    // Seek to that key with the intent of finding the boundary between
+    // next_user_id's mutations and the one after that (if any).
+    it->Seek(user_end);
+
+    // At this point there are three possible cases to handle differently. Each
+    // case must prepare the next iteration (by assigning to next_user_id or
+    // setting more_user_ids = false) and seek the iterator to the last row in
+    // the current user's mutation sequence.
+    if (!it->Valid()) {
+      // The iterator is past the last row altogether (there are no additional
+      // user_ids and now rows in any table after mutations). The last row will
+      // have the highest batch_id.
+      more_user_ids = false;
+      it->SeekToLast();
+
+    } else if (row_key.Decode(MakeStringView(it->key()))) {
+      // The iterator is valid and the key decoded successfully so the next user
+      // was just decoded.
+      next_user_id = row_key.user_id();
+      it->Prev();
+
+    } else {
+      // The iterator is past the end of the mutations table but there are other
+      // rows.
+      more_user_ids = false;
+      it->Prev();
+    }
+
+    // In all the cases above there was at least one row for the current user
+    // and each case has set things up such that iterator points to it.
+    if (!row_key.Decode(MakeStringView(it->key()))) {
+      HARD_FAIL("There should have been a key previous to %s", user_end);
+    }
+
+    if (row_key.batch_id() > max_batch_id) {
+      max_batch_id = row_key.batch_id();
+    }
+  }
+
+  return max_batch_id + 1;
+}
+
+LevelDbMutationQueue::LevelDbMutationQueue(const User& user,
+                                           LevelDbPersistence* db,
+                                           LocalSerializer* serializer)
+    : db_(NOT_NULL(db)),
+      serializer_(NOT_NULL(serializer)),
+      user_id_(user.is_authenticated() ? user.uid() : "") {
+}
+
+void LevelDbMutationQueue::Start() {
+  next_batch_id_ = LoadNextBatchIdFromDb(db_->ptr());
+  metadata_ = MetadataForKey(mutation_queue_key());
+}
+
+bool LevelDbMutationQueue::IsEmpty() {
+  std::string user_key = LevelDbMutationKey::KeyPrefix(user_id_);
+
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(user_key);
+
+  bool empty = true;
+  if (it->Valid() && absl::StartsWith(it->key(), user_key)) {
+    empty = false;
+  }
+  return empty;
+}
+
+void LevelDbMutationQueue::AcknowledgeBatch(const MutationBatch&,
+                                            const ByteString& stream_token) {
+  SetLastStreamToken(stream_token);
+}
+
+MutationBatch LevelDbMutationQueue::AddMutationBatch(
+    const Timestamp& local_write_time,
+    std::vector<Mutation>&& base_mutations,
+    std::vector<Mutation>&& mutations) {
+  BatchId batch_id = next_batch_id_;
+  next_batch_id_++;
+
+  MutationBatch batch(batch_id, local_write_time, std::move(base_mutations),
+                      std::move(mutations));
+  std::string key = mutation_batch_key(batch_id);
+  db_->current_transaction()->Put(key, serializer_->EncodeMutationBatch(batch));
+
+  // Store an empty value in the index which is equivalent to serializing a
+  // GPBEmpty message. In the future if we wanted to store some other kind of
+  // value here, we can parse these empty values as with some other protocol
+  // buffer (and the parser will see all default values).
+  std::string empty_buffer;
+
+  for (const Mutation& mutation : batch.mutations()) {
+    key = LevelDbDocumentMutationKey::Key(user_id_, mutation.key(), batch_id);
+    db_->current_transaction()->Put(key, empty_buffer);
+
+    db_->index_manager()->AddToCollectionParentIndex(
+        mutation.key().path().PopLast());
+  }
+
+  return batch;
+}
+
+void LevelDbMutationQueue::RemoveMutationBatch(const MutationBatch& batch) {
+  auto check_iterator = db_->current_transaction()->NewIterator();
+
+  BatchId batch_id = batch.batch_id();
+  std::string key = mutation_batch_key(batch_id);
+
+  // As a sanity check, verify that the mutation batch exists before deleting
+  // it.
+  check_iterator->Seek(key);
+  HARD_ASSERT(check_iterator->Valid(), "Mutation batch %s did not exist",
+              DescribeKey(key));
+
+  HARD_ASSERT(key == check_iterator->key(),
+              "Mutation batch %s not found; found %s", DescribeKey(key),
+              DescribeKey(check_iterator->key()));
+
+  db_->current_transaction()->Delete(key);
+
+  for (const Mutation& mutation : batch.mutations()) {
+    key = LevelDbDocumentMutationKey::Key(user_id_, mutation.key(), batch_id);
+    db_->current_transaction()->Delete(key);
+    db_->reference_delegate()->RemoveMutationReference(mutation.key());
+  }
+}
+
+std::vector<MutationBatch> LevelDbMutationQueue::AllMutationBatches() {
+  std::string user_key = LevelDbMutationKey::KeyPrefix(user_id_);
+
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(user_key);
+  std::vector<MutationBatch> result;
+  for (; it->Valid() && absl::StartsWith(it->key(), user_key); it->Next()) {
+    result.push_back(ParseMutationBatch(it->value()));
+  }
+  return result;
+}
+
+std::vector<MutationBatch>
+LevelDbMutationQueue::AllMutationBatchesAffectingDocumentKeys(
+    const DocumentKeySet& document_keys) {
+  // Take a pass through the document keys and collect the set of unique
+  // mutation batch_ids that affect them all. Some batches can affect more than
+  // one key.
+  std::set<BatchId> batch_ids;
+
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  LevelDbDocumentMutationKey row_key;
+  for (const DocumentKey& document_key : document_keys) {
+    std::string index_prefix =
+        LevelDbDocumentMutationKey::KeyPrefix(user_id_, document_key.path());
+    for (index_iterator->Seek(index_prefix); index_iterator->Valid();
+         index_iterator->Next()) {
+      // Only consider rows matching exactly the specific key of interest. Index
+      // rows have this form (with markers in brackets):
+      //
+      // <User>user <Path>collection <Path>doc <BatchId>2 <Terminator>
+      // <User>user <Path>collection <Path>doc <BatchId>3 <Terminator>
+      // <User>user <Path>collection <Path>doc <Path>sub <Path>doc <BatchId>3
+      // <Terminator>
+      //
+      // Note that Path markers sort after BatchId markers so this means that
+      // when searching for collection/doc, all the entries for it will be
+      // contiguous in the table, allowing a break after any mismatch.
+      if (!absl::StartsWith(index_iterator->key(), index_prefix) ||
+          !row_key.Decode(index_iterator->key()) ||
+          row_key.document_key() != document_key) {
+        break;
+      }
+
+      batch_ids.insert(row_key.batch_id());
+    }
+  }
+
+  return AllMutationBatchesWithIds(batch_ids);
+}
+
+std::vector<MutationBatch>
+LevelDbMutationQueue::AllMutationBatchesAffectingDocumentKey(
+    const DocumentKey& key) {
+  return AllMutationBatchesAffectingDocumentKeys(DocumentKeySet{key});
+}
+
+std::vector<MutationBatch>
+LevelDbMutationQueue::AllMutationBatchesAffectingQuery(const Query& query) {
+  HARD_ASSERT(!query.IsDocumentQuery(),
+              "Document queries shouldn't go down this path");
+  HARD_ASSERT(
+      !query.IsCollectionGroupQuery(),
+      "CollectionGroup queries should be handled in LocalDocumentsView");
+
+  const ResourcePath& query_path = query.path();
+  size_t immediate_children_path_length = query_path.size() + 1;
+
+  // TODO(mcg): Actually implement a single-collection query
+  //
+  // This is actually executing an ancestor query, traversing the whole subtree
+  // below the collection which can be horrifically inefficient for some
+  // structures. The right way to solve this is to implement the full value
+  // index, but that's not in the cards in the near future so this is the best
+  // we can do for the moment.
+  //
+  // Since we don't yet index the actual properties in the mutations, our
+  // current approach is to just return all mutation batches that affect
+  // documents in the collection being queried.
+  //
+  // Unlike AllMutationBatchesAffectingDocumentKey, this iteration will scan the
+  // document-mutation index for more than a single document so the associated
+  // batch_ids will be neither necessarily unique nor in order. This means an
+  // efficient simultaneous scan isn't possible.
+  std::string index_prefix =
+      LevelDbDocumentMutationKey::KeyPrefix(user_id_, query_path);
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  LevelDbDocumentMutationKey row_key;
+
+  // Collect up unique batch_ids encountered during a scan of the index. Use a
+  // set<BatchId> to accumulate the IDs so they can be traversed in order in a
+  // scan of the main table.
+  //
+  // This method is faster than performing lookups of the keys with _db->Get and
+  // keeping a hash of batch_ids that have already been looked up. The
+  // performance difference is minor for small numbers of keys but > 30% faster
+  // for larger numbers of keys.
+  std::set<BatchId> unique_batch_ids;
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    if (!absl::StartsWith(index_iterator->key(), index_prefix) ||
+        !row_key.Decode(index_iterator->key())) {
+      break;
+    }
+
+    // Rows with document keys more than one segment longer than the query path
+    // can't be matches. For example, a query on 'rooms' can't match the
+    // document /rooms/abc/messages/xyx.
+    // TODO(mcg): we'll need a different scanner when we implement ancestor
+    // queries.
+    if (row_key.document_key().path().size() !=
+        immediate_children_path_length) {
+      continue;
+    }
+
+    unique_batch_ids.insert(row_key.batch_id());
+  }
+
+  return AllMutationBatchesWithIds(unique_batch_ids);
+}
+
+absl::optional<MutationBatch> LevelDbMutationQueue::LookupMutationBatch(
+    model::BatchId batch_id) {
+  std::string key = mutation_batch_key(batch_id);
+
+  std::string value;
+  Status status = db_->current_transaction()->Get(key, &value);
+  if (!status.ok()) {
+    if (status.IsNotFound()) {
+      return absl::nullopt;
+    }
+    HARD_FAIL("Lookup mutation batch (%s, %s) failed with status: %s", user_id_,
+              batch_id, status.ToString());
+  }
+
+  return ParseMutationBatch(value);
+}
+
+absl::optional<MutationBatch>
+LevelDbMutationQueue::NextMutationBatchAfterBatchId(model::BatchId batch_id) {
+  BatchId next_batch_id = batch_id + 1;
+
+  std::string key = mutation_batch_key(next_batch_id);
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(key);
+
+  LevelDbMutationKey row_key;
+  if (!it->Valid() || !row_key.Decode(it->key())) {
+    // Past the last row in the DB or out of the mutations table
+    return absl::nullopt;
+  }
+
+  if (row_key.user_id() != user_id_) {
+    // Jumped past the last mutation for this user
+    return absl::nullopt;
+  }
+
+  HARD_ASSERT(row_key.batch_id() >= next_batch_id,
+              "Should have found mutation after %s", next_batch_id);
+  return ParseMutationBatch(it->value());
+}
+
+BatchId LevelDbMutationQueue::GetHighestUnacknowledgedBatchId() {
+  std::unique_ptr<Iterator> it(
+      db_->ptr()->NewIterator(LevelDbTransaction::DefaultReadOptions()));
+
+  std::string next_user_key =
+      util::PrefixSuccessor(LevelDbMutationKey::KeyPrefix(user_id_));
+
+  LevelDbMutationKey row_key;
+
+  it->Seek(next_user_key);
+  it->Prev();
+  if (it->Valid() && row_key.Decode(MakeStringView(it->key())) &&
+      row_key.user_id() == user_id_) {
+    return row_key.batch_id();
+  }
+
+  return kBatchIdUnknown;
+}
+
+void LevelDbMutationQueue::PerformConsistencyCheck() {
+  if (!IsEmpty()) {
+    return;
+  }
+
+  // Verify that there are no entries in the document-mutation index if the
+  // queue is empty.
+  std::string index_prefix = LevelDbDocumentMutationKey::KeyPrefix(user_id_);
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  std::vector<std::string> dangling_mutation_references;
+
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    // Only consider rows matching this index prefix for the current user.
+    if (!absl::StartsWith(index_iterator->key(), index_prefix)) {
+      break;
+    }
+
+    dangling_mutation_references.push_back(DescribeKey(index_iterator));
+  }
+
+  HARD_ASSERT(dangling_mutation_references.empty(),
+              "Document leak -- detected dangling mutation references when "
+              "queue is empty. Dangling keys: %s",
+              util::ToString(dangling_mutation_references));
+}
+
+ByteString LevelDbMutationQueue::GetLastStreamToken() {
+  return ByteString{metadata_->last_stream_token};
+}
+
+void LevelDbMutationQueue::SetLastStreamToken(ByteString stream_token) {
+  std::free(metadata_->last_stream_token);
+
+  metadata_->last_stream_token = stream_token.release();
+  db_->current_transaction()->Put(mutation_queue_key(), metadata_);
+}
+
+std::vector<MutationBatch> LevelDbMutationQueue::AllMutationBatchesWithIds(
+    const std::set<BatchId>& batch_ids) {
+  std::vector<MutationBatch> result;
+
+  // Given an ordered set of unique batch_ids perform a skipping scan over the
+  // main table to find the mutation batches.
+  auto mutation_iterator = db_->current_transaction()->NewIterator();
+  for (BatchId batch_id : batch_ids) {
+    std::string mutation_key = mutation_batch_key(batch_id);
+    mutation_iterator->Seek(mutation_key);
+    if (!mutation_iterator->Valid() ||
+        mutation_iterator->key() != mutation_key) {
+      HARD_FAIL(
+          "Dangling document-mutation reference found: Missing batch %s; "
+          "seeking there found %s",
+          DescribeKey(mutation_key), DescribeKey(mutation_iterator));
+    }
+
+    result.push_back(ParseMutationBatch(mutation_iterator->value()));
+  }
+
+  return result;
+}
+
+std::string LevelDbMutationQueue::mutation_queue_key() const {
+  return LevelDbMutationQueueKey::Key(user_id_);
+}
+
+std::string LevelDbMutationQueue::mutation_batch_key(
+    model::BatchId batch_id) const {
+  return LevelDbMutationKey::Key(user_id_, batch_id);
+}
+
+Message<firestore_client_MutationQueue> LevelDbMutationQueue::MetadataForKey(
+    const std::string& key) {
+  std::string value;
+  Status status = db_->current_transaction()->Get(key, &value);
+
+  StringReader reader{value};
+  reader.set_status(ConvertStatus(status));
+  auto result = Message<firestore_client_MutationQueue>::TryParse(&reader);
+
+  if (reader.ok()) {
+    return result;
+  } else if (reader.status().code() == Error::kErrorNotFound) {
+    // Return a default-constructed message (`TryParse` is guaranteed to return
+    // a default-constructed message on failure).
+    return result;
+  } else {
+    HARD_FAIL("MetadataForKey: failed loading key %s with status: %s", key,
+              reader.status().ToString());
+  }
+}
+
+MutationBatch LevelDbMutationQueue::ParseMutationBatch(
+    absl::string_view encoded) {
+  StringReader reader{encoded};
+  auto maybe_message = Message<firestore_client_WriteBatch>::TryParse(&reader);
+  auto result = serializer_->DecodeMutationBatch(&reader, *maybe_message);
+  if (!reader.ok()) {
+    HARD_FAIL("MutationBatch proto failed to parse: %s",
+              reader.status().ToString());
+  }
+
+  return result;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.h
new file mode 100644
index 0000000..2a14dad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_mutation_queue.h	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MUTATION_QUEUE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MUTATION_QUEUE_H_
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h"
+#include "Firestore/core/src/local/mutation_queue.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "leveldb/db.h"
+
+namespace firebase {
+class Timestamp;
+
+namespace firestore {
+
+namespace auth {
+class User;
+}  // namespace auth
+
+namespace local {
+class LevelDbPersistence;
+class LocalSerializer;
+
+/**
+ * Returns one larger than the largest batch ID that has been stored. If there
+ * are no mutations returns 0. Note that batch IDs are global.
+ */
+model::BatchId LoadNextBatchIdFromDb(leveldb::DB* db);
+
+class LevelDbMutationQueue : public MutationQueue {
+ public:
+  LevelDbMutationQueue(const auth::User& user,
+                       LevelDbPersistence* db,
+                       LocalSerializer* serializer);
+
+  void Start() override;
+
+  bool IsEmpty() override;
+
+  void AcknowledgeBatch(const model::MutationBatch& batch,
+                        const nanopb::ByteString& stream_token) override;
+
+  model::MutationBatch AddMutationBatch(
+      const Timestamp& local_write_time,
+      std::vector<model::Mutation>&& base_mutations,
+      std::vector<model::Mutation>&& mutations) override;
+
+  void RemoveMutationBatch(const model::MutationBatch& batch) override;
+
+  std::vector<model::MutationBatch> AllMutationBatches() override;
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingDocumentKeys(
+      const model::DocumentKeySet& document_keys) override;
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingDocumentKey(
+      const model::DocumentKey& key) override;
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingQuery(
+      const core::Query& query) override;
+
+  absl::optional<model::MutationBatch> LookupMutationBatch(
+      model::BatchId batch_id) override;
+
+  absl::optional<model::MutationBatch> NextMutationBatchAfterBatchId(
+      model::BatchId batch_id) override;
+
+  model::BatchId GetHighestUnacknowledgedBatchId() override;
+
+  void PerformConsistencyCheck() override;
+
+  nanopb::ByteString GetLastStreamToken() override;
+
+  void SetLastStreamToken(nanopb::ByteString stream_token) override;
+
+ private:
+  /**
+   * Constructs a vector of matching batches, sorted by batch_id to ensure that
+   * multiple mutations affecting the same document key are applied in order.
+   */
+  std::vector<model::MutationBatch> AllMutationBatchesWithIds(
+      const std::set<model::BatchId>& batch_ids);
+
+  std::string mutation_queue_key() const;
+
+  std::string mutation_batch_key(model::BatchId batch_id) const;
+
+  /** Parses the MutationQueue metadata from the given LevelDB row contents. */
+  nanopb::Message<firestore_client_MutationQueue> MetadataForKey(
+      const std::string& key);
+
+  model::MutationBatch ParseMutationBatch(absl::string_view encoded);
+
+  // The LevelDbMutationQueue instance is owned by LevelDbPersistence.
+  LevelDbPersistence* db_;
+
+  // Owned by LevelDbPersistence.
+  LocalSerializer* serializer_ = nullptr;
+
+  /**
+   * The normalized user_id (i.e. after converting null to empty) as used in our
+   * LevelDB keys.
+   */
+  std::string user_id_;
+
+  /**
+   * Next value to use when assigning sequential IDs to each mutation batch.
+   *
+   * NOTE: There can only be one LevelDbMutationQueue for a given db at a time,
+   * hence it is safe to track next_batch_id_ as an instance-level property.
+   * Should we ever relax this constraint we'll need to revisit this.
+   */
+  model::BatchId next_batch_id_;
+
+  /**
+   * A write-through cache copy of the metadata describing the current queue.
+   */
+  nanopb::Message<firestore_client_MutationQueue> metadata_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_MUTATION_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.cc
new file mode 100644
index 0000000..d7d679b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.cc	
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_opener.h"
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/filesystem.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using core::DatabaseInfo;
+using remote::Serializer;
+using util::Filesystem;
+using util::Path;
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+
+constexpr const char* kReservedPathComponent = "firestore";
+
+Status FromCause(const std::string& message, const Status& cause) {
+  if (cause.ok()) return cause;
+
+  return Status(cause.code(), message).CausedBy(cause);
+}
+
+}  // namespace
+
+LevelDbOpener::LevelDbOpener(DatabaseInfo database_info, Filesystem* fs)
+    : database_info_(std::move(database_info)),
+      fs_(fs ? fs : Filesystem::Default()) {
+}
+
+LevelDbOpener::LevelDbOpener(DatabaseInfo database_info,
+                             Path firestore_app_data_dir)
+    : database_info_(std::move(database_info)),
+      app_data_dir_(std::move(firestore_app_data_dir)),
+      fs_(Filesystem::Default()) {
+}
+
+util::StatusOr<std::unique_ptr<LevelDbPersistence>> LevelDbOpener::Create(
+    const LruParams& lru_params) {
+  auto maybe_dir = PrepareDataDir();
+  if (!maybe_dir.ok()) return maybe_dir.status();
+  Path db_data_dir = maybe_dir.ValueOrDie();
+
+  LOG_DEBUG("Using %s for LevelDB storage", db_data_dir.ToUtf8String());
+
+  Serializer remote_serializer(database_info_.database_id());
+  LocalSerializer local_serializer(std::move(remote_serializer));
+
+  return LevelDbPersistence::Create(db_data_dir, std::move(local_serializer),
+                                    lru_params);
+}
+
+StatusOr<Path> LevelDbOpener::LevelDbDataDir() {
+  StatusOr<Path> maybe_dir = FirestoreAppDataDir();
+  if (!maybe_dir.ok()) return maybe_dir;
+  return StorageDir(maybe_dir.ValueOrDie());
+}
+
+StatusOr<Path> LevelDbOpener::PrepareDataDir() {
+  StatusOr<Path> maybe_dir = LevelDbDataDir();
+  if (!maybe_dir.ok()) return maybe_dir;
+  Path db_data_dir = std::move(maybe_dir).ValueOrDie();
+
+  // Check for the preferred location. If it exists, we're done.
+  Status dir_status = fs_->IsDirectory(db_data_dir);
+  if (dir_status.ok()) {
+    return db_data_dir;
+  } else if (dir_status.code() != Error::kErrorNotFound) {
+    return dir_status;
+  }
+
+  // The preferred dir doesn't exist so check for the legacy location. If it
+  // exists, migrate.
+  maybe_dir = FirestoreLegacyAppDataDir();
+  Path legacy_db_data_dir;
+  if (maybe_dir.ok()) {
+    legacy_db_data_dir = StorageDir(std::move(maybe_dir).ValueOrDie());
+    dir_status = fs_->IsDirectory(legacy_db_data_dir);
+  } else {
+    dir_status = maybe_dir.status();
+  }
+
+  if (dir_status.ok()) {
+    // The legacy directory does exist, so migrate
+    return MigrateDataDir(legacy_db_data_dir, db_data_dir);
+
+  } else if (dir_status.code() != Error::kErrorNotFound &&
+             dir_status.code() != Error::kErrorUnimplemented) {
+    return dir_status;
+  }
+
+  // Either we couldn't find the legacy directory or this platform has no legacy
+  // directory so create the new directory.
+  Status created = fs_->RecursivelyCreateDir(db_data_dir);
+  if (!created.ok()) {
+    std::string message =
+        StringFormat("Could not create LevelDB data directory %s",
+                     db_data_dir.ToUtf8String());
+
+    return FromCause(message, created);
+  }
+
+  return db_data_dir;
+}
+
+StatusOr<Path> LevelDbOpener::FirestoreAppDataDir() {
+  if (app_data_dir_.empty()) {
+    auto maybe_dir = fs_->AppDataDir(kReservedPathComponent);
+    if (!maybe_dir.ok()) {
+      return FromCause(
+          "Failed to find the App data directory for the current user",
+          maybe_dir.status());
+    }
+    app_data_dir_ = std::move(maybe_dir).ValueOrDie();
+  }
+  return app_data_dir_;
+}
+
+StatusOr<Path> LevelDbOpener::FirestoreLegacyAppDataDir() {
+  if (legacy_app_data_dir_.empty()) {
+    auto maybe_dir = fs_->LegacyDocumentsDir(kReservedPathComponent);
+    if (!maybe_dir.ok()) {
+      return FromCause(
+          "Failed to find the Documents directory for the current user",
+          maybe_dir.status());
+    }
+    legacy_app_data_dir_ = std::move(maybe_dir).ValueOrDie();
+  }
+  return legacy_app_data_dir_;
+}
+
+Path LevelDbOpener::StorageDir(const Path& base_path) {
+  // Use two different path formats:
+  //
+  //   * persistence_key / project_id . database_id / name
+  //   * persistence_key / project_id / name
+  //
+  // project_ids are DNS-compatible names and cannot contain dots so there's
+  // no danger of collisions.
+  std::string project_key = database_info_.database_id().project_id();
+  if (!database_info_.database_id().IsDefaultDatabase()) {
+    absl::StrAppend(&project_key, ".",
+                    database_info_.database_id().database_id());
+  }
+
+  // Reserve one additional path component to allow multiple physical databases
+  return Path::JoinUtf8(base_path, database_info_.persistence_key(),
+                        project_key, "main");
+}
+
+StatusOr<Path> LevelDbOpener::MigrateDataDir(
+    const firebase::firestore::util::Path& legacy_db_data_dir,
+    const firebase::firestore::util::Path& db_data_dir) {
+  // At this point the legacy location exists and the preferred location doesn't
+  // so just move into place.
+  LOG_DEBUG(
+      "Migrating LevelDB storage from legacy location: %s\nMigrating to: %s",
+      legacy_db_data_dir.ToUtf8String(), db_data_dir.ToUtf8String());
+
+  Path db_data_parent = db_data_dir.Dirname();
+  Status created = fs_->RecursivelyCreateDir(db_data_parent);
+  if (!created.ok()) {
+    std::string message =
+        StringFormat("Could not create LevelDB data directory %s",
+                     db_data_parent.ToUtf8String());
+    LOG_ERROR("Migration failed: %s. Existing data unchanged.", message);
+    return FromCause(message, created);
+  }
+
+  Status renamed = fs_->Rename(legacy_db_data_dir, db_data_dir);
+  if (!renamed.ok()) {
+    std::string message = StringFormat(
+        "Failed to migrate LevelDB data from %s to %s",
+        legacy_db_data_dir.ToUtf8String(), db_data_dir.ToUtf8String());
+    LOG_ERROR("Migration failed: %s. Existing data unchanged.", message);
+    return FromCause(message, renamed);
+  }
+
+  RecursivelyCleanupLegacyDirs(legacy_db_data_dir);
+  return db_data_dir;
+}
+
+void LevelDbOpener::RecursivelyCleanupLegacyDirs(Path legacy_dir) {
+  // The legacy_dir must be within the container_dir.
+  HARD_ASSERT(!legacy_app_data_dir_.empty());
+  HARD_ASSERT(absl::StartsWith(legacy_dir.ToUtf8String(),
+                               legacy_app_data_dir_.ToUtf8String()));
+
+  // The container directory contains a trailing "firestore" component
+  HARD_ASSERT(absl::EndsWith(legacy_app_data_dir_.ToUtf8String(),
+                             kReservedPathComponent));
+
+  Path parent_most = legacy_app_data_dir_.Dirname();
+  for (; legacy_dir != parent_most; legacy_dir = legacy_dir.Dirname()) {
+    Status is_dir = fs_->IsDirectory(legacy_dir);
+    if (is_dir.ok()) {
+      if (util::IsEmptyDir(legacy_dir)) {
+        Status removed = fs_->RemoveDir(legacy_dir);
+        if (!removed.ok()) {
+          LOG_WARN("Could not remove directory %s: %s",
+                   legacy_dir.ToUtf8String(), removed.ToString());
+          break;
+        }
+      }
+
+    } else if (is_dir.code() != Error::kErrorNotFound) {
+      LOG_WARN("Could not remove directory %s: %s", legacy_dir.ToUtf8String(),
+               is_dir.ToString());
+      break;
+    }
+  }
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.h
new file mode 100644
index 0000000..0516523
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_opener.h	
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_OPENER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_OPENER_H_
+
+#include <memory>
+
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/util/path.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace util {
+class Filesystem;
+class Status;
+
+template <typename T>
+class StatusOr;
+}  // namespace util
+
+namespace local {
+
+class LevelDbPersistence;
+struct LruParams;
+
+class LevelDbOpener {
+ public:
+  /**
+   * Creates an opener that uses the given filesystem, or
+   * `Filesystem::Default()` if `fs` is `nullptr`. A non-default Filesystem
+   * should only be used in tests.
+   */
+  explicit LevelDbOpener(core::DatabaseInfo database_info,
+                         util::Filesystem* fs = nullptr);
+
+  /**
+   * Creates an opener that uses a pre-specified storage location. This should
+   * only be used in tests.
+   *
+   * @param database_info The instance configuration
+   * @param firestore_app_data_dir The Firestore-specific application data
+   * directory.
+   */
+  LevelDbOpener(core::DatabaseInfo database_info,
+                util::Path firestore_app_data_dir);
+
+  /**
+   * Creates the LevelDbPersistence instance.
+   *
+   * This process includes:
+   *
+   *   * Migrating existing data from a legacy location into the new location
+   *     (i.e. from ~/Documents to ~/Library/Application Support on iOS);
+   *   * Cleaning up the directory structure in the legacy location;
+   *   * Creating the directory structure to uniquely hold the data for this
+   *     instance.
+   *   * Actually opening the LevelDB database.
+   *
+   * @param lru_params The LRU GC configuration to use for the instance.
+   * @return A pointer to the created instance or Status indicating what failed.
+   */
+  util::StatusOr<std::unique_ptr<LevelDbPersistence>> Create(
+      const LruParams& lru_params);
+
+  /**
+   * Finds a suitable directory to serve as the root of all Firestore local
+   * storage for all Firestore instances.
+   */
+  util::StatusOr<util::Path> FirestoreAppDataDir();
+
+  /**
+   * Finds the location where Firestore used to keep local storage for all
+   * Firestore instances.
+   */
+  util::StatusOr<util::Path> FirestoreLegacyAppDataDir();
+
+  /**
+   * Returns the location of the data for the single Firestore instance named
+   * by the DatabaseInfo passed to the `LevelDbOpener` constructor.
+   */
+  util::StatusOr<util::Path> LevelDbDataDir();
+
+ private:
+  /**
+   * Prepares the directory that contains the instance's data.
+   */
+  util::StatusOr<util::Path> PrepareDataDir();
+
+  /**
+   * Computes a unique storage directory for the given identifying components of
+   * local storage.
+   *
+   * @param base_path The root application data directory relative to which
+   *     the instance-specific storage directory will be created. Usually just
+   *     `FirestoreAppDataDir()`.
+   * @return A storage directory unique to the instance identified by
+   *     `database_info`.
+   */
+  util::Path StorageDir(const util::Path& base_path);
+
+  util::StatusOr<util::Path> MigrateDataDir(
+      const util::Path& legacy_db_data_dir, const util::Path& db_data_dir);
+
+  void RecursivelyCleanupLegacyDirs(util::Path legacy_dir);
+
+  core::DatabaseInfo database_info_;
+  util::Path app_data_dir_;
+  util::Path legacy_app_data_dir_;
+  util::Filesystem* fs_ = nullptr;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_OPENER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.cc
new file mode 100644
index 0000000..30463ef
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.cc	
@@ -0,0 +1,280 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_persistence.h"
+
+#include <limits>
+#include <utility>
+
+#include "Firestore/core/src/auth/user.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_lru_reference_delegate.h"
+#include "Firestore/core/src/local/leveldb_migrations.h"
+#include "Firestore/core/src/local/leveldb_opener.h"
+#include "Firestore/core/src/local/leveldb_util.h"
+#include "Firestore/core/src/local/listen_sequence.h"
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/util/filesystem.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_util.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using auth::User;
+using leveldb::DB;
+using model::ListenSequenceNumber;
+using util::Filesystem;
+using util::Path;
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+
+/**
+ * Finds all user ids in the database based on the existence of a mutation
+ * queue.
+ */
+std::set<std::string> CollectUserSet(LevelDbTransaction* transaction) {
+  std::set<std::string> result;
+
+  std::string table_prefix = LevelDbMutationKey::KeyPrefix();
+  auto it = transaction->NewIterator();
+  it->Seek(table_prefix);
+
+  LevelDbMutationKey row_key;
+  while (it->Valid() && absl::StartsWith(it->key(), table_prefix) &&
+         row_key.Decode(it->key())) {
+    result.insert(row_key.user_id());
+
+    auto user_end = LevelDbMutationKey::KeyPrefix(row_key.user_id());
+    user_end = util::PrefixSuccessor(user_end);
+    it->Seek(user_end);
+  }
+  return result;
+}
+
+}  // namespace
+
+StatusOr<std::unique_ptr<LevelDbPersistence>> LevelDbPersistence::Create(
+    util::Path dir, LocalSerializer serializer, const LruParams& lru_params) {
+  auto* fs = Filesystem::Default();
+  Status status = EnsureDirectory(dir);
+  if (!status.ok()) return status;
+
+  status = fs->ExcludeFromBackups(dir);
+  if (!status.ok()) return status;
+
+  StatusOr<std::unique_ptr<DB>> created = OpenDb(dir);
+  if (!created.ok()) return created.status();
+
+  std::unique_ptr<DB> db = std::move(created).ValueOrDie();
+  LevelDbMigrations::RunMigrations(db.get(), serializer);
+
+  LevelDbTransaction transaction(db.get(), "Start LevelDB");
+  std::set<std::string> users = CollectUserSet(&transaction);
+  transaction.Commit();
+
+  // Explicit conversion is required to allow the StatusOr to be created.
+  std::unique_ptr<LevelDbPersistence> result(
+      new LevelDbPersistence(std::move(db), std::move(dir), std::move(users),
+                             std::move(serializer), lru_params));
+  return {std::move(result)};
+}
+
+LevelDbPersistence::LevelDbPersistence(std::unique_ptr<leveldb::DB> db,
+                                       util::Path directory,
+                                       std::set<std::string> users,
+                                       LocalSerializer serializer,
+                                       const LruParams& lru_params)
+    : db_(std::move(db)),
+      directory_(std::move(directory)),
+      users_(std::move(users)),
+      serializer_(std::move(serializer)) {
+  target_cache_ = absl::make_unique<LevelDbTargetCache>(this, &serializer_);
+  document_cache_ =
+      absl::make_unique<LevelDbRemoteDocumentCache>(this, &serializer_);
+  index_manager_ = absl::make_unique<LevelDbIndexManager>(this);
+  reference_delegate_ =
+      absl::make_unique<LevelDbLruReferenceDelegate>(this, lru_params);
+  bundle_cache_ = absl::make_unique<LevelDbBundleCache>(this, &serializer_);
+
+  // TODO(gsoltis): set up a leveldb transaction for these operations.
+  target_cache_->Start();
+  reference_delegate_->Start();
+  started_ = true;
+}
+
+// Handle unique_ptrs to forward declarations
+LevelDbPersistence::~LevelDbPersistence() = default;
+
+// MARK: - Startup
+
+Status LevelDbPersistence::EnsureDirectory(const Path& dir) {
+  auto* fs = Filesystem::Default();
+  Status status = fs->RecursivelyCreateDir(dir);
+  if (!status.ok()) {
+    return Status{Error::kErrorInternal,
+                  "Failed to create persistence directory"}
+        .CausedBy(status);
+  }
+
+  return Status::OK();
+}
+
+StatusOr<std::unique_ptr<DB>> LevelDbPersistence::OpenDb(const Path& dir) {
+  leveldb::Options options;
+  options.create_if_missing = true;
+
+  DB* database = nullptr;
+  leveldb::Status status = DB::Open(options, dir.ToUtf8String(), &database);
+  if (!status.ok()) {
+    return Status{Error::kErrorInternal,
+                  StringFormat("Failed to open LevelDB database at %s",
+                               dir.ToUtf8String())}
+        .CausedBy(ConvertStatus(status));
+  }
+
+  return std::unique_ptr<DB>(database);
+}
+
+// MARK: - LevelDB utilities
+
+LevelDbTransaction* LevelDbPersistence::current_transaction() {
+  HARD_ASSERT(transaction_ != nullptr,
+              "Attempting to access transaction before one has started");
+  return transaction_.get();
+}
+
+util::Status LevelDbPersistence::ClearPersistence(
+    const core::DatabaseInfo& database_info) {
+  LevelDbOpener opener(database_info);
+  StatusOr<Path> maybe_data_dir = opener.LevelDbDataDir();
+  HARD_ASSERT(maybe_data_dir.ok(), "Failed to find local LevelDB files: %s",
+              maybe_data_dir.status().ToString());
+  Path leveldb_dir = std::move(maybe_data_dir).ValueOrDie();
+
+  LOG_DEBUG("Clearing persistence for path: %s", leveldb_dir.ToUtf8String());
+  auto* fs = Filesystem::Default();
+  return fs->RecursivelyRemove(leveldb_dir);
+}
+
+StatusOr<int64_t> LevelDbPersistence::CalculateByteSize() {
+  auto* fs = Filesystem::Default();
+
+  // Accumulate the total size in an unsigned integer to avoid undefined
+  // behavior on overflow.
+  uint64_t count = 0;
+  auto iter = util::DirectoryIterator::Create(directory_);
+  for (; iter->Valid(); iter->Next()) {
+    StatusOr<int64_t> maybe_size = fs->FileSize(iter->file());
+    if (!maybe_size.ok()) {
+      return Status::FromCause("Failed to size LevelDB directory",
+                               maybe_size.status());
+    }
+
+    uint64_t old_count = count;
+    int64_t file_size = maybe_size.ValueOrDie();
+    count += file_size;
+
+    auto max_signed_value =
+        static_cast<uint64_t>(std::numeric_limits<int64_t>::max());
+    if (count < old_count || count > max_signed_value) {
+      return Status(Error::kErrorOutOfRange,
+                    "Failed to size LevelDB: count overflowed");
+    }
+  }
+
+  if (!iter->status().ok()) {
+    return Status::FromCause("Failed to iterate over LevelDB files",
+                             iter->status());
+  }
+  return static_cast<int64_t>(count);
+}
+
+// MARK: - Persistence
+
+model::ListenSequenceNumber LevelDbPersistence::current_sequence_number()
+    const {
+  return reference_delegate_->current_sequence_number();
+}
+
+void LevelDbPersistence::Shutdown() {
+  HARD_ASSERT(started_, "LevelDbPersistence shutdown without start!");
+  started_ = false;
+  db_.reset();
+}
+
+LevelDbMutationQueue* LevelDbPersistence::GetMutationQueueForUser(
+    const auth::User& user) {
+  users_.insert(user.uid());
+  current_mutation_queue_ =
+      absl::make_unique<LevelDbMutationQueue>(user, this, &serializer_);
+  return current_mutation_queue_.get();
+}
+
+LevelDbTargetCache* LevelDbPersistence::target_cache() {
+  return target_cache_.get();
+}
+
+LevelDbRemoteDocumentCache* LevelDbPersistence::remote_document_cache() {
+  return document_cache_.get();
+}
+
+LevelDbIndexManager* LevelDbPersistence::index_manager() {
+  return index_manager_.get();
+}
+
+LevelDbLruReferenceDelegate* LevelDbPersistence::reference_delegate() {
+  return reference_delegate_.get();
+}
+
+LevelDbBundleCache* LevelDbPersistence::bundle_cache() {
+  return bundle_cache_.get();
+}
+
+void LevelDbPersistence::RunInternal(absl::string_view label,
+                                     std::function<void()> block) {
+  HARD_ASSERT(transaction_ == nullptr,
+              "Starting a transaction while one is already in progress");
+
+  transaction_ = absl::make_unique<LevelDbTransaction>(db_.get(), label);
+  reference_delegate_->OnTransactionStarted(label);
+
+  block();
+
+  reference_delegate_->OnTransactionCommitted();
+  transaction_->Commit();
+  transaction_.reset();
+}
+
+leveldb::ReadOptions StandardReadOptions() {
+  // For now this is paranoid, but perhaps disable that in production builds.
+  leveldb::ReadOptions options;
+  options.verify_checksums = true;
+  return options;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.h
new file mode 100644
index 0000000..7bb66b8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_persistence.h	
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_PERSISTENCE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_PERSISTENCE_H_
+
+#include <memory>
+#include <set>
+#include <string>
+
+#include "Firestore/core/src/auth/user.h"
+#include "Firestore/core/src/local/leveldb_bundle_cache.h"
+#include "Firestore/core/src/local/leveldb_index_manager.h"
+#include "Firestore/core/src/local/leveldb_lru_reference_delegate.h"
+#include "Firestore/core/src/local/leveldb_mutation_queue.h"
+#include "Firestore/core/src/local/leveldb_remote_document_cache.h"
+#include "Firestore/core/src/local/leveldb_target_cache.h"
+#include "Firestore/core/src/local/leveldb_transaction.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/local/persistence.h"
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class DatabaseInfo;
+}  // namespace core
+
+namespace local {
+
+class LevelDbLruReferenceDelegate;
+struct LruParams;
+
+/** A LevelDB-backed implementation of the Persistence interface. */
+class LevelDbPersistence : public Persistence {
+ public:
+  /**
+   * Creates a LevelDB in the given directory and returns it or a Status object
+   * containing details of the failure.
+   */
+  static util::StatusOr<std::unique_ptr<LevelDbPersistence>> Create(
+      util::Path dir, LocalSerializer serializer, const LruParams& lru_params);
+
+  ~LevelDbPersistence();
+
+  LevelDbTransaction* current_transaction();
+
+  leveldb::DB* ptr() {
+    return db_.get();
+  }
+
+  const std::set<std::string> users() const {
+    return users_;
+  }
+
+  static util::Status ClearPersistence(const core::DatabaseInfo& database_info);
+
+  util::StatusOr<int64_t> CalculateByteSize();
+
+  // MARK: Persistence overrides
+
+  model::ListenSequenceNumber current_sequence_number() const override;
+
+  void Shutdown() override;
+
+  LevelDbBundleCache* bundle_cache() override;
+
+  LevelDbMutationQueue* GetMutationQueueForUser(
+      const auth::User& user) override;
+
+  LevelDbTargetCache* target_cache() override;
+
+  LevelDbRemoteDocumentCache* remote_document_cache() override;
+
+  LevelDbIndexManager* index_manager() override;
+
+  LevelDbLruReferenceDelegate* reference_delegate() override;
+
+ protected:
+  void RunInternal(absl::string_view label,
+                   std::function<void()> block) override;
+
+ private:
+  LevelDbPersistence(std::unique_ptr<leveldb::DB> db,
+                     util::Path directory,
+                     std::set<std::string> users,
+                     LocalSerializer serializer,
+                     const LruParams& lru_params);
+
+  /**
+   * Ensures that the given directory exists.
+   */
+  static util::Status EnsureDirectory(const util::Path& dir);
+
+  /** Opens the database within the given directory. */
+  static util::StatusOr<std::unique_ptr<leveldb::DB>> OpenDb(
+      const util::Path& dir);
+
+  std::unique_ptr<leveldb::DB> db_;
+
+  util::Path directory_;
+  std::set<std::string> users_;
+  LocalSerializer serializer_;
+  bool started_ = false;
+
+  std::unique_ptr<LevelDbBundleCache> bundle_cache_;
+  std::unique_ptr<LevelDbMutationQueue> current_mutation_queue_;
+  std::unique_ptr<LevelDbTargetCache> target_cache_;
+  std::unique_ptr<LevelDbRemoteDocumentCache> document_cache_;
+  std::unique_ptr<LevelDbIndexManager> index_manager_;
+  std::unique_ptr<LevelDbLruReferenceDelegate> reference_delegate_;
+
+  std::unique_ptr<LevelDbTransaction> transaction_;
+};
+
+/** Returns a standard set of read options. */
+leveldb::ReadOptions StandardReadOptions();
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_PERSISTENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.cc
new file mode 100644
index 0000000..ce15c5f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.cc	
@@ -0,0 +1,290 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_remote_document_cache.h"
+
+#include <string>
+#include <thread>  // NOLINT(build/c++11)
+#include <utility>
+
+#include "Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/util/background_queue.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/string_util.h"
+#include "leveldb/db.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using core::Query;
+using leveldb::Status;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::MutableDocument;
+using model::MutableDocumentMap;
+using model::ResourcePath;
+using model::SnapshotVersion;
+using nanopb::Message;
+using nanopb::StringReader;
+using util::BackgroundQueue;
+using util::Executor;
+
+/**
+ * An accumulator for results produced asynchronously. This accumulates
+ * values in a vector to avoid contention caused by accumulating into more
+ * complex structures like immutable::SortedMap.
+ */
+template <typename T>
+class AsyncResults {
+ public:
+  void Insert(T&& value) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    values_.push_back(std::move(value));
+  }
+
+  void Insert(const T& value) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    values_.push_back(value);
+  }
+
+  /**
+   * Returns the accumulated result, moving it out of AsyncResults. The
+   * AsyncResults object should not be reused.
+   */
+  std::vector<T> Result() {
+    std::lock_guard<std::mutex> lock(mutex_);
+    return std::move(values_);
+  }
+
+ private:
+  std::vector<T> values_;
+  std::mutex mutex_;
+};
+
+}  // namespace
+
+LevelDbRemoteDocumentCache::LevelDbRemoteDocumentCache(
+    LevelDbPersistence* db, LocalSerializer* serializer)
+    : db_(db), serializer_(NOT_NULL(serializer)) {
+  auto hw_concurrency = std::thread::hardware_concurrency();
+  if (hw_concurrency == 0) {
+    // If the standard library doesn't know, guess something reasonable.
+    hw_concurrency = 4;
+  }
+  executor_ = Executor::CreateConcurrent("com.google.firebase.firestore.query",
+                                         static_cast<int>(hw_concurrency));
+}
+
+// Out of line because of unique_ptrs to incomplete types.
+LevelDbRemoteDocumentCache::~LevelDbRemoteDocumentCache() = default;
+
+void LevelDbRemoteDocumentCache::Add(const MutableDocument& document,
+                                     const SnapshotVersion& read_time) {
+  const DocumentKey& key = document.key();
+  const ResourcePath& path = key.path();
+
+  std::string ldb_document_key = LevelDbRemoteDocumentKey::Key(key);
+  db_->current_transaction()->Put(ldb_document_key,
+                                  serializer_->EncodeMaybeDocument(document));
+
+  std::string ldb_read_time_key = LevelDbRemoteDocumentReadTimeKey::Key(
+      path.PopLast(), read_time, path.last_segment());
+  db_->current_transaction()->Put(ldb_read_time_key, "");
+
+  db_->index_manager()->AddToCollectionParentIndex(
+      document.key().path().PopLast());
+}
+
+void LevelDbRemoteDocumentCache::Remove(const DocumentKey& key) {
+  std::string ldb_key = LevelDbRemoteDocumentKey::Key(key);
+  db_->current_transaction()->Delete(ldb_key);
+}
+
+MutableDocument LevelDbRemoteDocumentCache::Get(const DocumentKey& key) {
+  std::string ldb_key = LevelDbRemoteDocumentKey::Key(key);
+  std::string value;
+  Status status = db_->current_transaction()->Get(ldb_key, &value);
+  if (status.IsNotFound()) {
+    return MutableDocument::InvalidDocument(key);
+  } else if (status.ok()) {
+    return DecodeMaybeDocument(value, key);
+  } else {
+    HARD_FAIL("Fetch document for key (%s) failed with status: %s",
+              key.ToString(), status.ToString());
+  }
+}
+
+MutableDocumentMap LevelDbRemoteDocumentCache::GetAll(
+    const DocumentKeySet& keys) {
+  BackgroundQueue tasks(executor_.get());
+  AsyncResults<std::pair<DocumentKey, MutableDocument>> results;
+
+  LevelDbRemoteDocumentKey current_key;
+  auto it = db_->current_transaction()->NewIterator();
+
+  for (const DocumentKey& key : keys) {
+    it->Seek(LevelDbRemoteDocumentKey::Key(key));
+    if (!it->Valid() || !current_key.Decode(it->key()) ||
+        current_key.document_key() != key) {
+      results.Insert(
+          std::make_pair(key, MutableDocument::InvalidDocument(key)));
+    } else {
+      const std::string& contents = it->value();
+      tasks.Execute([this, &results, &key, contents] {
+        results.Insert(std::make_pair(key, DecodeMaybeDocument(contents, key)));
+      });
+    }
+  }
+
+  tasks.AwaitAll();
+
+  MutableDocumentMap map;
+  for (const auto& entry : results.Result()) {
+    map = map.insert(entry.first, entry.second);
+  }
+  return map;
+}
+
+MutableDocumentMap LevelDbRemoteDocumentCache::GetAllExisting(
+    const DocumentKeySet& keys) {
+  MutableDocumentMap docs = LevelDbRemoteDocumentCache::GetAll(keys);
+  MutableDocumentMap result;
+  for (const auto& kv : docs) {
+    const DocumentKey& key = kv.first;
+    auto& document = kv.second;
+    if (document.is_found_document()) {
+      result = result.insert(key, document);
+    }
+  }
+
+  return result;
+}
+
+MutableDocumentMap LevelDbRemoteDocumentCache::GetMatching(
+    const Query& query, const SnapshotVersion& since_read_time) {
+  HARD_ASSERT(
+      !query.IsCollectionGroupQuery(),
+      "CollectionGroup queries should be handled in LocalDocumentsView");
+
+  // Use the query path as a prefix for testing if a document matches the query.
+  const ResourcePath& query_path = query.path();
+  size_t immediate_children_path_length = query_path.size() + 1;
+
+  if (since_read_time != SnapshotVersion::None()) {
+    // Execute an index-free query and filter by read time. This is safe since
+    // all document changes to queries that have a
+    // last_limbo_free_snapshot_version (`since_read_time`) have a read time
+    // set.
+    std::string start_key = LevelDbRemoteDocumentReadTimeKey::KeyPrefix(
+        query_path, since_read_time);
+    auto it = db_->current_transaction()->NewIterator();
+    it->Seek(util::ImmediateSuccessor(start_key));
+
+    DocumentKeySet remote_keys;
+
+    LevelDbRemoteDocumentReadTimeKey current_key;
+    for (; it->Valid() && current_key.Decode(it->key()); it->Next()) {
+      const ResourcePath& collection_path = current_key.collection_path();
+      if (collection_path != query_path) {
+        break;
+      }
+
+      const SnapshotVersion& read_time = current_key.read_time();
+      if (read_time > since_read_time) {
+        DocumentKey document_key(query_path.Append(current_key.document_id()));
+        remote_keys = remote_keys.insert(document_key);
+      }
+    }
+
+    return LevelDbRemoteDocumentCache::GetAllExisting(remote_keys);
+  } else {
+    BackgroundQueue tasks(executor_.get());
+    AsyncResults<MutableDocument> results;
+
+    // Documents are ordered by key, so we can use a prefix scan to narrow down
+    // the documents we need to match the query against.
+    std::string start_key = LevelDbRemoteDocumentKey::KeyPrefix(query_path);
+    auto it = db_->current_transaction()->NewIterator();
+    it->Seek(start_key);
+
+    LevelDbRemoteDocumentKey current_key;
+    for (; it->Valid() && current_key.Decode(it->key()); it->Next()) {
+      // The query is actually returning any path that starts with the query
+      // path prefix which may include documents in subcollections. For example,
+      // a query on 'rooms' will return rooms/abc/messages/xyx but we shouldn't
+      // match it. Fix this by discarding rows with document keys more than one
+      // segment longer than the query path.
+      const DocumentKey& document_key = current_key.document_key();
+      if (document_key.path().size() != immediate_children_path_length) {
+        continue;
+      }
+
+      if (!query_path.IsPrefixOf(document_key.path())) {
+        break;
+      }
+
+      const std::string& contents = it->value();
+      tasks.Execute([this, &results, document_key, contents] {
+        MutableDocument document = DecodeMaybeDocument(contents, document_key);
+        if (document.is_found_document()) {
+          results.Insert(document);
+        }
+      });
+    }
+
+    tasks.AwaitAll();
+
+    MutableDocumentMap map;
+    for (const MutableDocument& doc : results.Result()) {
+      map = map.insert(doc.key(), doc);
+    }
+    return map;
+  }
+}
+
+MutableDocument LevelDbRemoteDocumentCache::DecodeMaybeDocument(
+    absl::string_view encoded, const DocumentKey& key) {
+  StringReader reader{encoded};
+
+  auto message = Message<firestore_client_MaybeDocument>::TryParse(&reader);
+  MutableDocument maybe_document =
+      serializer_->DecodeMaybeDocument(&reader, *message);
+
+  if (!reader.ok()) {
+    HARD_FAIL("MaybeDocument proto failed to parse: %s",
+              reader.status().ToString());
+  }
+  HARD_ASSERT(maybe_document.key() == key,
+              "Read document has key (%s) instead of expected key (%s).",
+              maybe_document.key().ToString(), key.ToString());
+
+  return maybe_document;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.h
new file mode 100644
index 0000000..980ccb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_remote_document_cache.h	
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_REMOTE_DOCUMENT_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_REMOTE_DOCUMENT_CACHE_H_
+
+#include <memory>
+#include <thread>  // NOLINT(build/c++11)
+#include <vector>
+
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace util {
+class Executor;
+}  // namespace util
+
+namespace local {
+
+class LevelDbPersistence;
+class LocalSerializer;
+
+/** Cached Remote Documents backed by leveldb. */
+class LevelDbRemoteDocumentCache : public RemoteDocumentCache {
+ public:
+  LevelDbRemoteDocumentCache(LevelDbPersistence* db,
+                             LocalSerializer* serializer);
+  ~LevelDbRemoteDocumentCache();
+
+  void Add(const model::MutableDocument& document,
+           const model::SnapshotVersion& read_time) override;
+  void Remove(const model::DocumentKey& key) override;
+
+  model::MutableDocument Get(const model::DocumentKey& key) override;
+  model::MutableDocumentMap GetAll(const model::DocumentKeySet& keys) override;
+  model::MutableDocumentMap GetMatching(
+      const core::Query& query,
+      const model::SnapshotVersion& since_read_time) override;
+
+ private:
+  /**
+   * Looks up a set of entries in the cache, returning only existing entries of
+   * Type::Document.
+   */
+  model::MutableDocumentMap GetAllExisting(const model::DocumentKeySet& keys);
+
+  model::MutableDocument DecodeMaybeDocument(absl::string_view encoded,
+                                             const model::DocumentKey& key);
+
+  // The LevelDbRemoteDocumentCache instance is owned by LevelDbPersistence.
+  LevelDbPersistence* db_;
+  // Owned by LevelDbPersistence.
+  LocalSerializer* serializer_ = nullptr;
+
+  std::unique_ptr<util::Executor> executor_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_REMOTE_DOCUMENT_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.cc
new file mode 100644
index 0000000..2635be8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.cc	
@@ -0,0 +1,452 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_target_cache.h"
+
+#include <string>
+#include <unordered_set>
+#include <utility>
+
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/local/leveldb_persistence.h"
+#include "Firestore/core/src/local/leveldb_util.h"
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::Target;
+using leveldb::Status;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::ListenSequenceNumber;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::Message;
+using nanopb::StringReader;
+
+absl::optional<Message<firestore_client_TargetGlobal>>
+LevelDbTargetCache::TryReadMetadata(leveldb::DB* db) {
+  std::string key = LevelDbTargetGlobalKey::Key();
+  std::string value;
+  Status status = db->Get(StandardReadOptions(), key, &value);
+
+  StringReader reader{value};
+  reader.set_status(ConvertStatus(status));
+
+  auto result = Message<firestore_client_TargetGlobal>::TryParse(&reader);
+  if (!reader.ok()) {
+    if (reader.status().code() == Error::kErrorNotFound) {
+      return absl::nullopt;
+    } else {
+      HARD_FAIL("ReadMetadata: failed loading key %s with status: %s", key,
+                reader.status().ToString());
+    }
+  }
+
+  return {std::move(result)};
+}
+
+Message<firestore_client_TargetGlobal> LevelDbTargetCache::ReadMetadata(
+    leveldb::DB* db) {
+  auto maybe_metadata = TryReadMetadata(db);
+  if (!maybe_metadata) {
+    HARD_FAIL(
+        "Found no metadata, expected schema to be at version 0 which "
+        "ensures metadata existence");
+  }
+  return std::move(maybe_metadata).value();
+}
+
+LevelDbTargetCache::LevelDbTargetCache(LevelDbPersistence* db,
+                                       LocalSerializer* serializer)
+    : db_(NOT_NULL(db)), serializer_(NOT_NULL(serializer)) {
+}
+
+void LevelDbTargetCache::Start() {
+  // TODO(gsoltis): switch this usage of ptr to current_transaction()
+  metadata_ = ReadMetadata(db_->ptr());
+
+  StringReader reader;
+  last_remote_snapshot_version_ = serializer_->DecodeVersion(
+      &reader, metadata_->last_remote_snapshot_version);
+  if (!reader.ok()) {
+    HARD_FAIL("Failed to decode last remote snapshot version, reason: '%s'",
+              reader.status().ToString());
+  }
+}
+
+void LevelDbTargetCache::AddTarget(const TargetData& target_data) {
+  Save(target_data);
+
+  const std::string& canonical_id = target_data.target().CanonicalId();
+  std::string index_key =
+      LevelDbQueryTargetKey::Key(canonical_id, target_data.target_id());
+  std::string empty_buffer;
+  db_->current_transaction()->Put(index_key, empty_buffer);
+
+  metadata_->target_count++;
+  UpdateMetadata(target_data);
+  SaveMetadata();
+}
+
+void LevelDbTargetCache::UpdateTarget(const TargetData& target_data) {
+  Save(target_data);
+
+  if (UpdateMetadata(target_data)) {
+    SaveMetadata();
+  }
+}
+
+void LevelDbTargetCache::RemoveTarget(const TargetData& target_data) {
+  TargetId target_id = target_data.target_id();
+
+  RemoveMatchingKeysForTarget(target_id);
+
+  std::string key = LevelDbTargetKey::Key(target_id);
+  db_->current_transaction()->Delete(key);
+
+  std::string index_key =
+      LevelDbQueryTargetKey::Key(target_data.target().CanonicalId(), target_id);
+  db_->current_transaction()->Delete(index_key);
+
+  metadata_->target_count--;
+  SaveMetadata();
+}
+
+absl::optional<TargetData> LevelDbTargetCache::GetTarget(const Target& target) {
+  // Scan the query-target index starting with a prefix starting with the given
+  // target's canonical_id. Note that this is a scan rather than a get because
+  // canonical_ids are not required to be unique per target.
+  const std::string& canonical_id = target.CanonicalId();
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  std::string index_prefix = LevelDbQueryTargetKey::KeyPrefix(canonical_id);
+  index_iterator->Seek(index_prefix);
+
+  // Simultaneously scan the targets table. This works because each
+  // (canonical_id, target_id) pair is unique and ordered, so when scanning a
+  // table prefixed by exactly one canonical_id, all the target_ids will be
+  // unique and in order.
+  std::string target_prefix = LevelDbTargetKey::KeyPrefix();
+  auto target_iterator = db_->current_transaction()->NewIterator();
+
+  LevelDbQueryTargetKey row_key;
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    // Only consider rows matching exactly the specific canonical_id of
+    // interest.
+    if (!absl::StartsWith(index_iterator->key(), index_prefix) ||
+        !row_key.Decode(index_iterator->key()) ||
+        canonical_id != row_key.canonical_id()) {
+      // End of this canonical_id's possible targets.
+      break;
+    }
+
+    // Each row is a unique combination of canonical_id and target_id, so this
+    // foreign key reference can only occur once.
+    std::string target_key = LevelDbTargetKey::Key(row_key.target_id());
+    target_iterator->Seek(target_key);
+    if (!target_iterator->Valid() || target_iterator->key() != target_key) {
+      LOG_WARN(
+          "Dangling query-target reference found: "
+          "%s points to %s; seeking there found %s",
+          DescribeKey(index_iterator), DescribeKey(target_key),
+          DescribeKey(target_iterator));
+      continue;
+    }
+
+    // Finally after finding a potential match, check that the target is
+    // actually equal to the requested target.
+    TargetData target_data = DecodeTarget(target_iterator->value());
+    if (target_data.target() == target) {
+      return target_data;
+    }
+  }
+
+  return absl::nullopt;
+}
+
+void LevelDbTargetCache::EnumerateSequenceNumbers(
+    const SequenceNumberCallback& callback) {
+  // Enumerate all targets, give their sequence numbers.
+  std::string target_prefix = LevelDbTargetKey::KeyPrefix();
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(target_prefix);
+  for (; it->Valid() && absl::StartsWith(it->key(), target_prefix);
+       it->Next()) {
+    StringReader reader{it->value()};
+    auto target_proto = DecodeTargetProto(&reader);
+    callback(target_proto->last_listen_sequence_number);
+  }
+}
+
+size_t LevelDbTargetCache::RemoveTargets(
+    ListenSequenceNumber upper_bound,
+    const std::unordered_map<model::TargetId, TargetData>& live_targets) {
+  std::string target_prefix = LevelDbTargetKey::KeyPrefix();
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(target_prefix);
+
+  std::unordered_set<TargetId> removed_targets;
+
+  // In https://github.com/firebase/firebase-ios-sdk/issues/6721, a customer
+  // reports that their client crashes when deserializing an invalid Target
+  // during an LRU run. Instead of deserializing the value into a full Target
+  // model, we only convert it into the underlying Protobuf message.
+  for (; it->Valid() && absl::StartsWith(it->key(), target_prefix);
+       it->Next()) {
+    StringReader reader{it->value()};
+    auto target_proto = DecodeTargetProto(&reader);
+    if (target_proto->last_listen_sequence_number <= upper_bound &&
+        live_targets.find(target_proto->target_id) == live_targets.end()) {
+      TargetId target_id = target_proto->target_id;
+
+      // Remove the DocumentKey to TargetId mapping
+      RemoveMatchingKeysForTarget(target_id);
+      // Remove the TargetId to Target mapping
+      db_->current_transaction()->Delete(it->key());
+
+      removed_targets.insert(target_id);
+    }
+  }
+
+  // Remove the CanonicalId to TargetId mapping
+  RemoveQueryTargetKeyForTargets(removed_targets);
+
+  metadata_->target_count -= removed_targets.size();
+  SaveMetadata();
+
+  return removed_targets.size();
+}
+
+void LevelDbTargetCache::AddMatchingKeys(const DocumentKeySet& keys,
+                                         TargetId target_id) {
+  // Store an empty value in the index which is equivalent to serializing a
+  // GPBEmpty message. In the future if we wanted to store some other kind of
+  // value here, we can parse these empty values as with some other protocol
+  // buffer (and the parser will see all default values).
+  std::string empty_buffer;
+
+  for (const DocumentKey& key : keys) {
+    db_->current_transaction()->Put(
+        LevelDbTargetDocumentKey::Key(target_id, key), empty_buffer);
+    db_->current_transaction()->Put(
+        LevelDbDocumentTargetKey::Key(key, target_id), empty_buffer);
+    db_->reference_delegate()->AddReference(key);
+  }
+}
+
+void LevelDbTargetCache::RemoveMatchingKeys(const DocumentKeySet& keys,
+                                            TargetId target_id) {
+  for (const DocumentKey& key : keys) {
+    db_->current_transaction()->Delete(
+        LevelDbTargetDocumentKey::Key(target_id, key));
+    db_->current_transaction()->Delete(
+        LevelDbDocumentTargetKey::Key(key, target_id));
+    db_->reference_delegate()->RemoveReference(key);
+  }
+}
+
+void LevelDbTargetCache::RemoveMatchingKeysForTarget(TargetId target_id) {
+  std::string index_prefix = LevelDbTargetDocumentKey::KeyPrefix(target_id);
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  LevelDbTargetDocumentKey row_key;
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    absl::string_view index_key = index_iterator->key();
+
+    // Only consider rows matching this specific target_id.
+    if (!row_key.Decode(index_key) || row_key.target_id() != target_id) {
+      break;
+    }
+    const DocumentKey& document_key = row_key.document_key();
+
+    // Delete both index rows
+    db_->current_transaction()->Delete(index_key);
+    db_->current_transaction()->Delete(
+        LevelDbDocumentTargetKey::Key(document_key, target_id));
+  }
+}
+
+void LevelDbTargetCache::RemoveQueryTargetKeyForTargets(
+    const std::unordered_set<TargetId>& target_ids) {
+  std::string index_prefix = LevelDbQueryTargetKey::KeyPrefix();
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  LevelDbQueryTargetKey row_key;
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    if (!row_key.Decode(index_iterator->key())) {
+      break;
+    }
+
+    if (target_ids.find(row_key.target_id()) != target_ids.end()) {
+      db_->current_transaction()->Delete(index_iterator->key());
+    }
+  }
+}
+
+DocumentKeySet LevelDbTargetCache::GetMatchingKeys(TargetId target_id) {
+  std::string index_prefix = LevelDbTargetDocumentKey::KeyPrefix(target_id);
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  DocumentKeySet result;
+  LevelDbTargetDocumentKey row_key;
+  for (; index_iterator->Valid(); index_iterator->Next()) {
+    // TODO(gsoltis): could we use a StartsWith instead?
+    // Only consider rows matching this specific target_id.
+    if (!row_key.Decode(index_iterator->key()) ||
+        row_key.target_id() != target_id) {
+      break;
+    }
+
+    result = result.insert(row_key.document_key());
+  }
+
+  return result;
+}
+
+bool LevelDbTargetCache::Contains(const DocumentKey& key) {
+  // ignore sentinel rows when determining if a key belongs to a target.
+  // Sentinel row just says the document exists, not that it's a member of any
+  // particular target.
+  std::string index_prefix = LevelDbDocumentTargetKey::KeyPrefix(key.path());
+  auto index_iterator = db_->current_transaction()->NewIterator();
+  index_iterator->Seek(index_prefix);
+
+  for (; index_iterator->Valid() &&
+         absl::StartsWith(index_iterator->key(), index_prefix);
+       index_iterator->Next()) {
+    LevelDbDocumentTargetKey row_key;
+    if (row_key.Decode(index_iterator->key()) && !row_key.IsSentinel() &&
+        row_key.document_key() == key) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+const SnapshotVersion& LevelDbTargetCache::GetLastRemoteSnapshotVersion()
+    const {
+  return last_remote_snapshot_version_;
+}
+
+void LevelDbTargetCache::SetLastRemoteSnapshotVersion(SnapshotVersion version) {
+  last_remote_snapshot_version_ = std::move(version);
+  metadata_->last_remote_snapshot_version =
+      serializer_->EncodeVersion(last_remote_snapshot_version_);
+  SaveMetadata();
+}
+
+void LevelDbTargetCache::EnumerateOrphanedDocuments(
+    const OrphanedDocumentCallback& callback) {
+  std::string document_target_prefix = LevelDbDocumentTargetKey::KeyPrefix();
+  auto it = db_->current_transaction()->NewIterator();
+  it->Seek(document_target_prefix);
+  ListenSequenceNumber next_to_report = 0;
+  DocumentKey key_to_report;
+  LevelDbDocumentTargetKey key;
+
+  for (; it->Valid() && absl::StartsWith(it->key(), document_target_prefix);
+       it->Next()) {
+    HARD_ASSERT(key.Decode(it->key()), "Failed to decode DocumentTarget key");
+    if (key.IsSentinel()) {
+      // if next_to_report is non-zero, report it, this is a new key so the last
+      // one must be not be a member of any targets.
+      if (next_to_report != 0) {
+        callback(key_to_report, next_to_report);
+      }
+      // set next_to_report to be this sequence number. It's the next one we
+      // might report, if we don't find any targets for this document.
+      next_to_report =
+          LevelDbDocumentTargetKey::DecodeSentinelValue(it->value());
+      key_to_report = key.document_key();
+    } else {
+      // set next_to_report to be 0, we know we don't need to report this one
+      // since we found a target for it.
+      next_to_report = 0;
+    }
+  }
+  // if next_to_report is non-zero, report it. We didn't find any targets for
+  // that document, and we weren't asked to stop.
+  if (next_to_report != 0) {
+    callback(key_to_report, next_to_report);
+  }
+}
+
+void LevelDbTargetCache::Save(const TargetData& target_data) {
+  TargetId target_id = target_data.target_id();
+  std::string key = LevelDbTargetKey::Key(target_id);
+  db_->current_transaction()->Put(key,
+                                  serializer_->EncodeTargetData(target_data));
+}
+
+bool LevelDbTargetCache::UpdateMetadata(const TargetData& target_data) {
+  bool updated = false;
+  if (target_data.target_id() > metadata_->highest_target_id) {
+    metadata_->highest_target_id = target_data.target_id();
+    updated = true;
+  }
+
+  if (target_data.sequence_number() >
+      metadata_->highest_listen_sequence_number) {
+    metadata_->highest_listen_sequence_number = target_data.sequence_number();
+    updated = true;
+  }
+
+  return updated;
+}
+
+void LevelDbTargetCache::SaveMetadata() {
+  db_->current_transaction()->Put(LevelDbTargetGlobalKey::Key(), metadata_);
+}
+
+nanopb::Message<firestore_client_Target> LevelDbTargetCache::DecodeTargetProto(
+    nanopb::Reader* reader) {
+  auto message = Message<firestore_client_Target>::TryParse(reader);
+  if (!reader->ok()) {
+    HARD_FAIL("Target proto failed to parse: %s", reader->status().ToString());
+  }
+  return message;
+}
+
+TargetData LevelDbTargetCache::DecodeTarget(absl::string_view encoded) {
+  StringReader reader{encoded};
+  auto message = DecodeTargetProto(&reader);
+  auto result = serializer_->DecodeTargetData(&reader, *message);
+  if (!reader.ok()) {
+    HARD_FAIL("Target failed to parse: %s, message: %s",
+              reader.status().ToString(), message.ToString());
+  }
+
+  return result;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.h
new file mode 100644
index 0000000..a6e8935
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_target_cache.h	
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TARGET_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TARGET_CACHE_H_
+
+#include <unordered_map>
+#include <unordered_set>
+
+#include "Firestore/Protos/nanopb/firestore/local/target.nanopb.h"
+#include "Firestore/core/src/local/target_cache.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "leveldb/db.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LevelDbPersistence;
+class LocalSerializer;
+class TargetData;
+
+/** Cached Queries backed by LevelDB. */
+class LevelDbTargetCache : public TargetCache {
+ public:
+  /**
+   * Retrieves the global singleton metadata row from the given database. If the
+   * metadata row doesn't exist, this will result in an assertion failure.
+   *
+   * TODO(gsoltis): remove this method once fully ported to transactions.
+   */
+  static nanopb::Message<firestore_client_TargetGlobal> ReadMetadata(
+      leveldb::DB* db);
+
+  /**
+   * Test-only -- same as `ReadMetadata`, but returns an empty optional if the
+   * metadata row doesn't exist.
+   */
+  static absl::optional<nanopb::Message<firestore_client_TargetGlobal>>
+  TryReadMetadata(leveldb::DB* db);
+
+  /**
+   * Creates a new target cache in the given LevelDB.
+   *
+   * @param db The LevelDB in which to create the cache.
+   */
+  LevelDbTargetCache(LevelDbPersistence* db, LocalSerializer* serializer);
+
+  // Target-related methods
+  void AddTarget(const TargetData& target_data) override;
+
+  void UpdateTarget(const TargetData& target_data) override;
+
+  void RemoveTarget(const TargetData& target_data) override;
+
+  absl::optional<TargetData> GetTarget(const core::Target& target) override;
+
+  void EnumerateSequenceNumbers(
+      const SequenceNumberCallback& callback) override;
+
+  size_t RemoveTargets(model::ListenSequenceNumber upper_bound,
+                       const std::unordered_map<model::TargetId, TargetData>&
+                           live_targets) override;
+
+  // Key-related methods
+
+  /**
+   * Adds the given document keys to cached query results of the given target
+   * ID.
+   */
+  void AddMatchingKeys(const model::DocumentKeySet& keys,
+                       model::TargetId target_id) override;
+
+  /** Removes the given document keys from the cached query results of the given
+   * target ID. */
+  void RemoveMatchingKeys(const model::DocumentKeySet& keys,
+                          model::TargetId target_id) override;
+
+  /** Removes all document keys in the query results of the given target ID. */
+  void RemoveMatchingKeysForTarget(model::TargetId target_id) override;
+
+  model::DocumentKeySet GetMatchingKeys(model::TargetId target_id) override;
+
+  /**
+   * Checks to see if there are any references to a document with the given key.
+   */
+  bool Contains(const model::DocumentKey& key) override;
+
+  // Other methods and accessors
+  size_t size() const override {
+    return metadata_->target_count;
+  }
+
+  model::TargetId highest_target_id() const override {
+    return metadata_->highest_target_id;
+  }
+
+  model::ListenSequenceNumber highest_listen_sequence_number() const override {
+    return metadata_->highest_listen_sequence_number;
+  }
+
+  const model::SnapshotVersion& GetLastRemoteSnapshotVersion() const override;
+
+  void SetLastRemoteSnapshotVersion(model::SnapshotVersion version) override;
+
+  // Non-interface methods
+  void Start();
+
+  void EnumerateOrphanedDocuments(const OrphanedDocumentCallback& callback);
+
+ private:
+  void Save(const TargetData& target_data);
+  bool UpdateMetadata(const TargetData& target_data);
+  void SaveMetadata();
+
+  /** Parses the given bytes as a `firestore_client_Target` protocol buffer. */
+  nanopb::Message<firestore_client_Target> DecodeTargetProto(
+      nanopb::Reader* reader);
+
+  /**
+   * Parses the given bytes as a `firestore_client_Target` protocol buffer and
+   * then converts to the equivalent target data.
+   */
+  TargetData DecodeTarget(absl::string_view encoded);
+
+  /** Removes the given targets from the query to target mapping. */
+  void RemoveQueryTargetKeyForTargets(
+      const std::unordered_set<model::TargetId>& target_id);
+
+  // The LevelDbTargetCache is owned by LevelDbPersistence.
+  LevelDbPersistence* db_;
+  // Owned by LevelDbPersistence.
+  LocalSerializer* serializer_ = nullptr;
+
+  /** A write-through cached copy of the metadata for the target cache. */
+  nanopb::Message<firestore_client_TargetGlobal> metadata_;
+
+  model::SnapshotVersion last_remote_snapshot_version_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TARGET_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.cc
new file mode 100644
index 0000000..6110061
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.cc	
@@ -0,0 +1,244 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_transaction.h"
+
+#include "Firestore/core/src/local/leveldb_key.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/str_cat.h"
+#include "leveldb/write_batch.h"
+
+using leveldb::DB;
+using leveldb::ReadOptions;
+using leveldb::Slice;
+using leveldb::Status;
+using leveldb::WriteBatch;
+using leveldb::WriteOptions;
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+LevelDbTransaction::Iterator::Iterator(LevelDbTransaction* txn)
+    : db_iter_(txn->db_->NewIterator(txn->read_options_)),
+      last_version_(txn->version_),
+      txn_(txn),
+      mutations_iter_(txn->mutations_.begin()),
+      current_(),
+      is_mutation_(false),
+      // Iterator doesn't really point to anything yet, so is
+      // invalid
+      is_valid_(false) {
+}
+
+void LevelDbTransaction::Iterator::UpdateCurrent() {
+  bool mutation_is_valid = mutations_iter_ != txn_->mutations_.end();
+  is_valid_ = mutation_is_valid || db_iter_->Valid();
+
+  if (is_valid_) {
+    if (!mutation_is_valid) {
+      is_mutation_ = false;
+    } else if (!db_iter_->Valid()) {
+      is_mutation_ = true;
+    } else {
+      // Both iterators are valid. If the leveldb key is equal to or greater
+      // than the current mutation key, we are looking at a mutation next. It's
+      // either sooner in the iteration or directly shadowing the underlying
+      // committed value in leveldb.
+      is_mutation_ = db_iter_->key().compare(mutations_iter_->first) >= 0;
+    }
+    if (is_mutation_) {
+      current_ = *mutations_iter_;
+    } else {
+      current_ = {db_iter_->key().ToString(), db_iter_->value().ToString()};
+    }
+  }
+}
+
+void LevelDbTransaction::Iterator::Seek(const std::string& key) {
+  db_iter_->Seek(key);
+  HARD_ASSERT(db_iter_->status().ok(), "leveldb iterator reported an error: %s",
+              db_iter_->status().ToString());
+  for (; db_iter_->Valid() && IsDeleted(db_iter_->key()); db_iter_->Next()) {
+  }
+  HARD_ASSERT(db_iter_->status().ok(), "leveldb iterator reported an error: %s",
+              db_iter_->status().ToString());
+  mutations_iter_ = txn_->mutations_.lower_bound(key);
+  UpdateCurrent();
+  last_version_ = txn_->version_;
+}
+
+const std::string& LevelDbTransaction::Iterator::key() const {
+  HARD_ASSERT(Valid(), "key() called on invalid iterator");
+  return current_.first;
+}
+
+const std::string& LevelDbTransaction::Iterator::value() const {
+  HARD_ASSERT(Valid(), "value() called on invalid iterator");
+  return current_.second;
+}
+
+bool LevelDbTransaction::Iterator::IsDeleted(leveldb::Slice slice) {
+  return txn_->deletions_.find(slice.ToString()) != txn_->deletions_.end();
+}
+
+bool LevelDbTransaction::Iterator::SyncToTransaction() {
+  if (last_version_ < txn_->version_) {
+    // Intentionally copying here since Seek() may update current_. We need the
+    // copy to do the comparison below.
+    const std::string current_key = current_.first;
+    Seek(current_key);
+    // If we advanced, we don't need to advance again.
+    return is_valid_ && current_.first > current_key;
+  } else {
+    return false;
+  }
+}
+
+void LevelDbTransaction::Iterator::AdvanceLDB() {
+  do {
+    db_iter_->Next();
+  } while (db_iter_->Valid() && IsDeleted(db_iter_->key()));
+  HARD_ASSERT(db_iter_->status().ok(), "leveldb iterator reported an error: %s",
+              db_iter_->status().ToString());
+}
+
+void LevelDbTransaction::Iterator::Next() {
+  HARD_ASSERT(Valid(), "Next() called on invalid iterator");
+  bool advanced = SyncToTransaction();
+  if (!advanced && is_valid_) {
+    if (is_mutation_) {
+      // A mutation might be shadowing leveldb. If so, advance both.
+      if (db_iter_->Valid() && db_iter_->key() == mutations_iter_->first) {
+        AdvanceLDB();
+      }
+      ++mutations_iter_;
+    } else {
+      AdvanceLDB();
+    }
+    UpdateCurrent();
+  }
+}
+
+LevelDbTransaction::LevelDbTransaction(DB* db,
+                                       absl::string_view label,
+                                       const ReadOptions& read_options,
+                                       const WriteOptions& write_options)
+    : db_(NOT_NULL(db)),
+      read_options_(read_options),
+      write_options_(write_options),
+      label_(label) {
+}
+
+const ReadOptions& LevelDbTransaction::DefaultReadOptions() {
+  // ReadOptions is trivial so it does not need to be heap-allocated.
+  static ReadOptions options = [] {
+    ReadOptions read_options;
+    read_options.verify_checksums = true;
+    return read_options;
+  }();
+  return options;
+}
+
+const WriteOptions& LevelDbTransaction::DefaultWriteOptions() {
+  // WriteOptions is trivial so it does not need to be heap-allocated.
+  static WriteOptions options;
+  return options;
+}
+
+void LevelDbTransaction::Put(std::string key, std::string value) {
+  deletions_.erase(key);
+  mutations_[std::move(key)] = std::move(value);
+  version_++;
+}
+
+std::unique_ptr<LevelDbTransaction::Iterator>
+LevelDbTransaction::NewIterator() {
+  return absl::make_unique<LevelDbTransaction::Iterator>(this);
+}
+
+Status LevelDbTransaction::Get(absl::string_view key, std::string* value) {
+  std::string key_string(key);
+  if (deletions_.find(key_string) != deletions_.end()) {
+    return Status::NotFound(key_string + " is not present in the transaction");
+  } else {
+    Mutations::iterator iter{mutations_.find(key_string)};
+    if (iter != mutations_.end()) {
+      *value = iter->second;
+      return Status::OK();
+    } else {
+      return db_->Get(read_options_, key_string, value);
+    }
+  }
+}
+
+void LevelDbTransaction::Delete(absl::string_view key) {
+  std::string to_delete(key);
+  deletions_.insert(to_delete);
+  mutations_.erase(to_delete);
+  version_++;
+}
+
+void LevelDbTransaction::Commit() {
+  WriteBatch batch;
+  for (const auto& deletion : deletions_) {
+    batch.Delete(deletion);
+  }
+
+  for (const auto& entry : mutations_) {
+    batch.Put(entry.first, entry.second);
+  }
+
+  LOG_DEBUG("Committing transaction: %s", ToString());
+
+  Status status = db_->Write(write_options_, &batch);
+  HARD_ASSERT(status.ok(), "Failed to commit transaction:\n%s\n Failed: %s",
+              ToString(), status.ToString());
+}
+
+std::string LevelDbTransaction::ToString() {
+  std::string dest = absl::StrCat("<LevelDbTransaction ", label_, ": ");
+  size_t changes = deletions_.size() + mutations_.size();
+  size_t bytes = 0;  // accumulator for size of individual mutations.
+  dest += std::to_string(changes) + " changes ";
+  std::string items;  // accumulator for individual changes.
+  for (const auto& deletion : deletions_) {
+    absl::StrAppend(&items, "\n  - Delete ", DescribeKey(deletion));
+  }
+  for (const auto& entry : mutations_) {
+    size_t change_bytes = entry.second.size();
+    bytes += change_bytes;
+    absl::StrAppend(&items, "\n  - Put ", DescribeKey(entry.first), " (",
+                    change_bytes, " bytes)");
+  }
+  absl::StrAppend(&dest, "(", bytes, " bytes):", items, ">");
+  return dest;
+}
+
+std::string DescribeKey(
+    const std::unique_ptr<LevelDbTransaction::Iterator>& iterator) {
+  if (iterator->Valid()) {
+    return DescribeKey(iterator->key());
+  } else {
+    return "the end of the table";
+  }
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.h
new file mode 100644
index 0000000..4cf0ecd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_transaction.h	
@@ -0,0 +1,216 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TRANSACTION_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TRANSACTION_H_
+
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "absl/strings/string_view.h"
+#include "leveldb/db.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * LevelDBTransaction tracks pending changes to entries in leveldb, including
+ * deletions. It also provides an Iterator to traverse a merged view of pending
+ * changes and committed values.
+ */
+class LevelDbTransaction {
+  using Deletions = std::set<std::string>;
+  using Mutations = std::map<std::string, std::string>;
+
+ public:
+  /**
+   * Iterator iterates over a merged view of pending changes from the
+   * transaction and any unchanged values in the underlying leveldb instance.
+   */
+  class Iterator {
+   public:
+    explicit Iterator(LevelDbTransaction* txn);
+
+    /**
+     * Returns true if this iterator points to an entry
+     */
+    bool Valid() const {
+      return is_valid_;
+    }
+
+    /**
+     * Seeks this iterator to the first key equal to or greater than the given
+     * key
+     */
+    void Seek(const std::string& key);
+
+    /**
+     * Advances the iterator to the next entry
+     */
+    void Next();
+
+    /**
+     * Returns the key of the current entry
+     */
+    const std::string& key() const;
+
+    /**
+     * Returns the value of the current entry
+     */
+    const std::string& value() const;
+
+   private:
+    /**
+     * Advances to the next non-deleted key in leveldb.
+     */
+    void AdvanceLDB();
+
+    /**
+     * Returns true if the given slice matches a key present in the deletions_
+     * set.
+     */
+    bool IsDeleted(leveldb::Slice slice);
+
+    /**
+     * Syncs with the underlying transaction. If the transaction has been
+     * updated, the mutation iterator may need to be reset. Returns true if this
+     * resulted in moving to a new underlying entry (i.e. the entry represented
+     * by current_ was deleted).
+     */
+    bool SyncToTransaction();
+
+    /**
+     * Given the current state of the internal iterators, set is_valid_,
+     * is_mutation_, and current_.
+     */
+    void UpdateCurrent();
+
+    std::unique_ptr<leveldb::Iterator> db_iter_;
+
+    // The last observed version of the underlying transaction
+    int32_t last_version_;
+    // The underlying transaction.
+    LevelDbTransaction* txn_;
+    Mutations::iterator mutations_iter_;
+    // We save the current key and value so that once an iterator is Valid(), it
+    // remains so at least until the next call to Seek() or Next(), even if the
+    // underlying data is deleted.
+    std::pair<std::string, std::string> current_;
+    // True if current_ represents an entry in the mutations_ map, rather than
+    // committed data.
+    bool is_mutation_;
+    // True if the iterator pointed to a valid entry the last time Next() or
+    // Seek() was called.
+    bool is_valid_;
+  };
+
+  explicit LevelDbTransaction(
+      leveldb::DB* db,
+      absl::string_view label,
+      const leveldb::ReadOptions& read_options = DefaultReadOptions(),
+      const leveldb::WriteOptions& write_options = DefaultWriteOptions());
+
+  LevelDbTransaction(const LevelDbTransaction& other) = delete;
+
+  LevelDbTransaction& operator=(const LevelDbTransaction& other) = delete;
+
+  /**
+   * Returns a default set of ReadOptions
+   */
+  static const leveldb::ReadOptions& DefaultReadOptions();
+
+  /**
+   * Returns a default set of WriteOptions
+   */
+  static const leveldb::WriteOptions& DefaultWriteOptions();
+
+  size_t changed_keys() const {
+    return mutations_.size() + deletions_.size();
+  }
+
+  /**
+   * Remove the database entry (if any) for "key".  It is not an error if "key"
+   * did not exist in the database.
+   */
+  void Delete(absl::string_view key);
+
+  /**
+   * Schedules the row identified by `key` to be set to `value` when this
+   * transaction commits.
+   */
+  void Put(std::string key, std::string value);
+
+  /**
+   * Schedules the row identified by `key` to be set to the given protocol
+   * buffer message when this transaction commits.
+   */
+  template <typename T>
+  void Put(std::string key, const nanopb::Message<T>& message) {
+    Put(std::move(key), MakeStdString(message));
+  }
+
+  /**
+   * Sets the contents of `value` to the latest known value for the given key,
+   * including any pending mutations and `Status::OK` is returned. If the key
+   * doesn't exist in leveldb, or it is scheduled for deletion in this
+   * transaction, `Status::NotFound` is returned.
+   */
+  leveldb::Status Get(absl::string_view key, std::string* value);
+
+  /**
+   * Returns a new Iterator over the pending changes in this transaction, merged
+   * with the existing values already in leveldb.
+   */
+  std::unique_ptr<Iterator> NewIterator();
+
+  /**
+   * Commits the transaction. All pending changes are written. The transaction
+   * should not be used after calling this method.
+   */
+  void Commit();
+
+  std::string ToString();
+
+ private:
+  leveldb::DB* db_ = nullptr;
+  Mutations mutations_;
+  Deletions deletions_;
+  leveldb::ReadOptions read_options_;
+  leveldb::WriteOptions write_options_;
+  int32_t version_ = 0;
+  std::string label_;
+};
+
+/**
+ * Returns a description of the current key if the iterator is Valid, otherwise
+ * the string "the end of the table."
+ */
+std::string DescribeKey(
+    const std::unique_ptr<LevelDbTransaction::Iterator>& iterator);
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_TRANSACTION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.cc
new file mode 100644
index 0000000..5176418
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.cc	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/leveldb_util.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+Error ConvertStatusCode(const leveldb::Status& status) {
+  if (status.ok()) return Error::kErrorOk;
+  if (status.IsNotFound()) return Error::kErrorNotFound;
+  if (status.IsCorruption()) return Error::kErrorDataLoss;
+  if (status.IsIOError()) return Error::kErrorUnavailable;
+  if (status.IsNotSupportedError()) return Error::kErrorUnimplemented;
+  if (status.IsInvalidArgument()) return Error::kErrorInvalidArgument;
+  return Error::kErrorUnknown;
+}
+
+}  // namespace
+
+util::Status ConvertStatus(const leveldb::Status& status) {
+  if (status.ok()) return util::Status::OK();
+
+  Error code = ConvertStatusCode(status);
+  return util::Status{code, absl::StrCat("LevelDB error: ", status.ToString())};
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.h
new file mode 100644
index 0000000..7bddd54
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/leveldb_util.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LEVELDB_UTIL_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LEVELDB_UTIL_H_
+
+#include <string>
+
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/** Creates a Slice from a string_view. */
+inline leveldb::Slice MakeSlice(absl::string_view view) {
+  return leveldb::Slice{view.data(), view.size()};
+}
+
+/** Creates a string_view from a Slice. */
+inline absl::string_view MakeStringView(leveldb::Slice slice) {
+  return absl::string_view{slice.data(), slice.size()};
+}
+
+/** Converts the given LevelDB status to a Firestore status. */
+util::Status ConvertStatus(const leveldb::Status& status);
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LEVELDB_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/listen_sequence.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/listen_sequence.h
new file mode 100644
index 0000000..71cd550
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/listen_sequence.h	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LISTEN_SEQUENCE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LISTEN_SEQUENCE_H_
+
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * ListenSequence is a monotonic sequence. It is initialized with a minimum
+ * value to exceed. All subsequent calls to next will return increasing values.
+ */
+class ListenSequence {
+ public:
+  explicit ListenSequence(model::ListenSequenceNumber starting_after)
+      : previous_sequence_number_(starting_after) {
+  }
+
+  model::ListenSequenceNumber Next() {
+    previous_sequence_number_++;
+    return previous_sequence_number_;
+  }
+
+ private:
+  model::ListenSequenceNumber previous_sequence_number_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LISTEN_SEQUENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.cc
new file mode 100644
index 0000000..ba1f0ca
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.cc	
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/local_documents_view.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/mutation_queue.h"
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::Query;
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::MutableDocument;
+using model::MutableDocumentMap;
+using model::Mutation;
+using model::MutationBatch;
+using model::ResourcePath;
+using model::SnapshotVersion;
+
+const Document LocalDocumentsView::GetDocument(const DocumentKey& key) {
+  std::vector<MutationBatch> batches =
+      mutation_queue_->AllMutationBatchesAffectingDocumentKey(key);
+  return GetDocument(key, batches);
+}
+
+Document LocalDocumentsView::GetDocument(
+    const DocumentKey& key, const std::vector<MutationBatch>& batches) {
+  MutableDocument document = remote_document_cache_->Get(key);
+  for (const MutationBatch& batch : batches) {
+    batch.ApplyToLocalDocument(document);
+  }
+  return Document{std::move(document)};
+}
+
+DocumentMap LocalDocumentsView::ApplyLocalMutationsToDocuments(
+    MutableDocumentMap& docs, const std::vector<MutationBatch>& batches) {
+  DocumentMap results;
+  for (const auto& kv : docs) {
+    MutableDocument local_view = kv.second;
+    for (const MutationBatch& batch : batches) {
+      batch.ApplyToLocalDocument(local_view);
+    }
+    results = results.insert(kv.first, std::move(local_view));
+  }
+  return results;
+}
+
+DocumentMap LocalDocumentsView::GetDocuments(const DocumentKeySet& keys) {
+  MutableDocumentMap docs = remote_document_cache_->GetAll(keys);
+  return GetLocalViewOfDocuments(std::move(docs));
+}
+
+DocumentMap LocalDocumentsView::GetLocalViewOfDocuments(
+    MutableDocumentMap docs) {
+  DocumentKeySet all_keys;
+  for (const auto& kv : docs) {
+    all_keys = all_keys.insert(kv.first);
+  }
+  std::vector<MutationBatch> batches =
+      mutation_queue_->AllMutationBatchesAffectingDocumentKeys(all_keys);
+  return ApplyLocalMutationsToDocuments(docs, batches);
+}
+
+DocumentMap LocalDocumentsView::GetDocumentsMatchingQuery(
+    const Query& query, const model::SnapshotVersion& since_read_time) {
+  if (query.IsDocumentQuery()) {
+    return GetDocumentsMatchingDocumentQuery(query.path());
+  } else if (query.IsCollectionGroupQuery()) {
+    return GetDocumentsMatchingCollectionGroupQuery(query, since_read_time);
+  } else {
+    return GetDocumentsMatchingCollectionQuery(query, since_read_time);
+  }
+}
+
+DocumentMap LocalDocumentsView::GetDocumentsMatchingDocumentQuery(
+    const ResourcePath& doc_path) {
+  DocumentMap result;
+  // Just do a simple document lookup.
+  Document doc = GetDocument(DocumentKey{doc_path});
+  if (doc->is_found_document()) {
+    result = result.insert(doc->key(), doc);
+  }
+  return result;
+}
+
+model::DocumentMap LocalDocumentsView::GetDocumentsMatchingCollectionGroupQuery(
+    const Query& query, const SnapshotVersion& since_read_time) {
+  HARD_ASSERT(
+      query.path().empty(),
+      "Currently we only support collection group queries at the root.");
+
+  const std::string& collection_id = *query.collection_group();
+  std::vector<ResourcePath> parents =
+      index_manager_->GetCollectionParents(collection_id);
+  DocumentMap results;
+
+  // Perform a collection query against each parent that contains the
+  // collection_id and aggregate the results.
+  for (const ResourcePath& parent : parents) {
+    Query collection_query =
+        query.AsCollectionQueryAtPath(parent.Append(collection_id));
+    DocumentMap collection_results =
+        GetDocumentsMatchingCollectionQuery(collection_query, since_read_time);
+    for (const auto& kv : collection_results) {
+      const DocumentKey& key = kv.first;
+      results = results.insert(key, Document(kv.second));
+    }
+  }
+  return results;
+}
+
+DocumentMap LocalDocumentsView::GetDocumentsMatchingCollectionQuery(
+    const Query& query, const SnapshotVersion& since_read_time) {
+  MutableDocumentMap remote_documents =
+      remote_document_cache_->GetMatching(query, since_read_time);
+  // Get locally persisted mutation batches.
+  std::vector<MutationBatch> matching_batches =
+      mutation_queue_->AllMutationBatchesAffectingQuery(query);
+
+  remote_documents =
+      AddMissingBaseDocuments(matching_batches, std::move(remote_documents));
+
+  for (const MutationBatch& batch : matching_batches) {
+    for (const Mutation& mutation : batch.mutations()) {
+      // Only process documents belonging to the collection.
+      if (!query.path().IsImmediateParentOf(mutation.key().path())) {
+        continue;
+      }
+
+      const DocumentKey& key = mutation.key();
+      // base_doc may be unset for the documents that weren't yet written to
+      // the backend.
+      absl::optional<MutableDocument> document = remote_documents.get(key);
+      if (!document) {
+        // Create invalid document to apply mutations on top of
+        document = MutableDocument::InvalidDocument(key);
+      }
+
+      mutation.ApplyToLocalView(*document, batch.local_write_time());
+      remote_documents = remote_documents.insert(key, *document);
+    }
+  }
+
+  // Finally, filter out any documents that don't actually match the query. Note
+  // that the extra reference here prevents DocumentMap's destructor from
+  // deallocating the initial unfiltered results while we're iterating over
+  // them.
+  DocumentMap results;
+  for (const auto& kv : remote_documents) {
+    const DocumentKey& key = kv.first;
+    if (query.Matches(kv.second)) {
+      results = results.insert(key, kv.second);
+    }
+  }
+
+  return results;
+}
+
+MutableDocumentMap LocalDocumentsView::AddMissingBaseDocuments(
+    const std::vector<MutationBatch>& matching_batches,
+    MutableDocumentMap existing_docs) {
+  DocumentKeySet missing_doc_keys;
+  for (const MutationBatch& batch : matching_batches) {
+    for (const Mutation& mutation : batch.mutations()) {
+      const DocumentKey& key = mutation.key();
+      if (mutation.type() == Mutation::Type::Patch &&
+          !existing_docs.contains(key)) {
+        missing_doc_keys = missing_doc_keys.insert(key);
+      }
+    }
+  }
+
+  MutableDocumentMap merged_docs = existing_docs;
+  MutableDocumentMap missing_docs =
+      remote_document_cache_->GetAll(missing_doc_keys);
+  for (const auto& kv : missing_docs) {
+    const MutableDocument document = kv.second;
+    if (document.is_found_document()) {
+      existing_docs = existing_docs.insert(kv.first, document);
+    }
+  }
+
+  return existing_docs;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.h
new file mode 100644
index 0000000..1bcbea8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_documents_view.h	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LOCAL_DOCUMENTS_VIEW_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LOCAL_DOCUMENTS_VIEW_H_
+
+#include <vector>
+
+#include "Firestore/core/src/local/index_manager.h"
+#include "Firestore/core/src/local/mutation_queue.h"
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class Query;
+}  // namespace core
+
+namespace model {
+class Document;
+}  // namespace model
+
+namespace local {
+
+/**
+ * A readonly view of the local state of all documents we're tracking (i.e. we
+ * have a cached version in the RemoteDocumentCache or local mutations for the
+ * document). The view is computed by applying the mutations in the
+ * MutationQueue to the RemoteDocumentCache.
+ */
+class LocalDocumentsView {
+ public:
+  LocalDocumentsView(RemoteDocumentCache* remote_document_cache,
+                     MutationQueue* mutation_queue,
+                     IndexManager* index_manager)
+      : remote_document_cache_{remote_document_cache},
+        mutation_queue_{mutation_queue},
+        index_manager_{index_manager} {
+  }
+
+  virtual ~LocalDocumentsView() = default;
+
+  /**
+   * Gets the local view of the document identified by `key`.
+   *
+   * @return Local view of the document or nil if we don't have any cached state
+   * for it.
+   */
+  const model::Document GetDocument(const model::DocumentKey& key);
+
+  /**
+   * Gets the local view of the documents identified by `keys`.
+   *
+   * If we don't have cached state for a document in `keys`, a DeletedDocument
+   * will be stored for that key in the resulting set.
+   */
+  model::DocumentMap GetDocuments(const model::DocumentKeySet& keys);
+
+  /**
+   * Similar to `GetDocuments`, but creates the local view from the given
+   * `base_docs` without retrieving documents from the local store.
+   */
+  model::DocumentMap GetLocalViewOfDocuments(
+      model::MutableDocumentMap base_docs);
+
+  /**
+   * Performs a query against the local view of all documents.
+   *
+   * @param query The query to match documents against.
+   * @param since_read_time If not set to SnapshotVersion::None(), return only
+   *     documents that have been read since this snapshot version (exclusive).
+   */
+  // Virtual for testing.
+  virtual model::DocumentMap GetDocumentsMatchingQuery(
+      const core::Query& query, const model::SnapshotVersion& since_read_time);
+
+ private:
+  friend class CountingQueryEngine;  // For testing
+
+  /** Internal version of GetDocument that allows re-using batches. */
+  model::Document GetDocument(const model::DocumentKey& key,
+                              const std::vector<model::MutationBatch>& batches);
+
+  /**
+   * Returns the view of the given `docs` as they would appear after applying
+   * all mutations in the given `batches`.
+   */
+  static model::DocumentMap ApplyLocalMutationsToDocuments(
+      model::MutableDocumentMap& docs,
+      const std::vector<model::MutationBatch>& batches);
+
+  /** Performs a simple document lookup for the given path. */
+  model::DocumentMap GetDocumentsMatchingDocumentQuery(
+      const model::ResourcePath& doc_path);
+
+  model::DocumentMap GetDocumentsMatchingCollectionGroupQuery(
+      const core::Query& query, const model::SnapshotVersion& since_read_time);
+
+  /** Queries the remote documents and overlays mutations. */
+  model::DocumentMap GetDocumentsMatchingCollectionQuery(
+      const core::Query& query, const model::SnapshotVersion& since_read_time);
+
+  /**
+   * It is possible that a `PatchMutation` can make a document match a query,
+   * even if the version in the `RemoteDocumentCache` is not a match yet
+   * (waiting for server to ack). To handle this, we find all document keys
+   * affected by the `PatchMutation`s that are not in `existing_docs` yet, and
+   * back fill them via `remote_document_cache_->GetAll`, otherwise those
+   * `PatchMutation`s will be ignored because no base document can be found, and
+   * lead to missing results for the query.
+   */
+  model::MutableDocumentMap AddMissingBaseDocuments(
+      const std::vector<model::MutationBatch>& matching_batches,
+      model::MutableDocumentMap existing_docs);
+
+  RemoteDocumentCache* remote_document_cache() {
+    return remote_document_cache_;
+  }
+
+  MutationQueue* mutation_queue() {
+    return mutation_queue_;
+  }
+
+  IndexManager* index_manager() {
+    return index_manager_;
+  }
+
+ private:
+  RemoteDocumentCache* remote_document_cache_;
+  MutationQueue* mutation_queue_;
+  IndexManager* index_manager_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LOCAL_DOCUMENTS_VIEW_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.cc
new file mode 100644
index 0000000..770c5d9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.cc	
@@ -0,0 +1,458 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/local_serializer.h"
+
+#include <cstdlib>
+#include <limits>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/firestore/bundle.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/target.nanopb.h"
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/types/span.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using bundle::BundledQuery;
+using bundle::BundleMetadata;
+using bundle::NamedQuery;
+using core::Target;
+using model::DeepClone;
+using model::FieldTransform;
+using model::MutableDocument;
+using model::Mutation;
+using model::MutationBatch;
+using model::ObjectValue;
+using model::SnapshotVersion;
+using nanopb::ByteString;
+using nanopb::CheckedSize;
+using nanopb::CopyBytesArray;
+using nanopb::MakeArray;
+using nanopb::Message;
+using nanopb::Reader;
+using nanopb::ReleaseFieldOwnership;
+using nanopb::SafeReadBoolean;
+using nanopb::SetRepeatedField;
+using nanopb::Writer;
+using util::Status;
+using util::StringFormat;
+
+}  // namespace
+
+Message<firestore_client_MaybeDocument> LocalSerializer::EncodeMaybeDocument(
+    const MutableDocument& document) const {
+  Message<firestore_client_MaybeDocument> result;
+
+  if (document.is_found_document()) {
+    result->which_document_type = firestore_client_MaybeDocument_document_tag;
+    result->document = EncodeDocument(document);
+    result->has_committed_mutations = document.has_committed_mutations();
+    return result;
+  } else if (document.is_no_document()) {
+    result->which_document_type =
+        firestore_client_MaybeDocument_no_document_tag;
+    result->no_document = EncodeNoDocument(document);
+    result->has_committed_mutations = document.has_committed_mutations();
+    return result;
+  } else if (document.is_unknown_document()) {
+    result->which_document_type =
+        firestore_client_MaybeDocument_unknown_document_tag;
+    result->unknown_document = EncodeUnknownDocument(document);
+    result->has_committed_mutations = true;
+    return result;
+  } else {
+    HARD_FAIL("Unknown document type %s", document.ToString());
+  }
+
+  UNREACHABLE();
+}
+
+MutableDocument LocalSerializer::DecodeMaybeDocument(
+    Reader* reader, firestore_client_MaybeDocument& proto) const {
+  if (!reader->status().ok()) return {};
+
+  switch (proto.which_document_type) {
+    case firestore_client_MaybeDocument_document_tag:
+      return DecodeDocument(reader, proto.document,
+                            SafeReadBoolean(proto.has_committed_mutations));
+
+    case firestore_client_MaybeDocument_no_document_tag:
+      return DecodeNoDocument(reader, proto.no_document,
+                              SafeReadBoolean(proto.has_committed_mutations));
+
+    case firestore_client_MaybeDocument_unknown_document_tag:
+      return DecodeUnknownDocument(reader, proto.unknown_document);
+
+    default:
+      reader->Fail(
+          StringFormat("Invalid document type: %s. Expected 'no_document' (%s) "
+                       "or 'document' (%s)",
+                       proto.which_document_type,
+                       firestore_client_MaybeDocument_no_document_tag,
+                       firestore_client_MaybeDocument_document_tag));
+      return {};
+  }
+
+  UNREACHABLE();
+}
+
+google_firestore_v1_Document LocalSerializer::EncodeDocument(
+    const MutableDocument& doc) const {
+  google_firestore_v1_Document result{};
+
+  result.name = rpc_serializer_.EncodeKey(doc.key());
+
+  // Encode Document.fields (unless it's empty)
+  google_firestore_v1_MapValue fields_map = doc.value().map_value;
+  SetRepeatedField(
+      &result.fields, &result.fields_count,
+      absl::Span<google_firestore_v1_MapValue_FieldsEntry>(
+          fields_map.fields, fields_map.fields_count),
+      [](const google_firestore_v1_MapValue_FieldsEntry& map_entry) {
+        // TODO(mrschmidt): Figure out how to remove this copy
+        return google_firestore_v1_Document_FieldsEntry{
+            nanopb::CopyBytesArray(map_entry.key),
+            *DeepClone(map_entry.value).release()};
+      });
+
+  result.has_update_time = true;
+  result.update_time = rpc_serializer_.EncodeVersion(doc.version());
+  // Ignore Document.create_time. (We don't use this in our on-disk protos.)
+
+  return result;
+}
+
+MutableDocument LocalSerializer::DecodeDocument(
+    Reader* reader,
+    google_firestore_v1_Document& proto,
+    bool has_committed_mutations) const {
+  ObjectValue fields =
+      ObjectValue::FromFieldsEntry(proto.fields, proto.fields_count);
+  SnapshotVersion version =
+      rpc_serializer_.DecodeVersion(reader->context(), proto.update_time);
+
+  MutableDocument document = MutableDocument::FoundDocument(
+      rpc_serializer_.DecodeKey(reader->context(), proto.name), version,
+      std::move(fields));
+  if (has_committed_mutations) {
+    document.SetHasCommittedMutations();
+  }
+  return document;
+}
+
+firestore_client_NoDocument LocalSerializer::EncodeNoDocument(
+    const MutableDocument& no_doc) const {
+  firestore_client_NoDocument result{};
+
+  result.name = rpc_serializer_.EncodeKey(no_doc.key());
+  result.read_time = rpc_serializer_.EncodeVersion(no_doc.version());
+
+  return result;
+}
+
+MutableDocument LocalSerializer::DecodeNoDocument(
+    Reader* reader,
+    const firestore_client_NoDocument& proto,
+    bool has_committed_mutations) const {
+  SnapshotVersion version =
+      rpc_serializer_.DecodeVersion(reader->context(), proto.read_time);
+
+  MutableDocument document = MutableDocument::NoDocument(
+      rpc_serializer_.DecodeKey(reader->context(), proto.name), version);
+  if (has_committed_mutations) {
+    document.SetHasCommittedMutations();
+  }
+  return document;
+}
+
+firestore_client_UnknownDocument LocalSerializer::EncodeUnknownDocument(
+    const MutableDocument& unknown_doc) const {
+  firestore_client_UnknownDocument result{};
+
+  result.name = rpc_serializer_.EncodeKey(unknown_doc.key());
+  result.version = rpc_serializer_.EncodeVersion(unknown_doc.version());
+
+  return result;
+}
+
+MutableDocument LocalSerializer::DecodeUnknownDocument(
+    Reader* reader, const firestore_client_UnknownDocument& proto) const {
+  SnapshotVersion version =
+      rpc_serializer_.DecodeVersion(reader->context(), proto.version);
+
+  return MutableDocument::UnknownDocument(
+      rpc_serializer_.DecodeKey(reader->context(), proto.name), version);
+}
+
+Message<firestore_client_Target> LocalSerializer::EncodeTargetData(
+    const TargetData& target_data) const {
+  HARD_ASSERT(target_data.purpose() == QueryPurpose::Listen,
+              "Only queries with purpose %s may be stored, got %s",
+              QueryPurpose::Listen, target_data.purpose());
+
+  Message<firestore_client_Target> result;
+
+  result->target_id = target_data.target_id();
+  result->last_listen_sequence_number = target_data.sequence_number();
+  result->snapshot_version = rpc_serializer_.EncodeTimestamp(
+      target_data.snapshot_version().timestamp());
+  result->last_limbo_free_snapshot_version = rpc_serializer_.EncodeTimestamp(
+      target_data.last_limbo_free_snapshot_version().timestamp());
+
+  // Force a copy because pb_release would otherwise double-free.
+  result->resume_token =
+      nanopb::CopyBytesArray(target_data.resume_token().get());
+
+  const Target& target = target_data.target();
+  if (target.IsDocumentQuery()) {
+    result->which_target_type = firestore_client_Target_documents_tag;
+    result->documents = rpc_serializer_.EncodeDocumentsTarget(target);
+  } else {
+    result->which_target_type = firestore_client_Target_query_tag;
+    result->query = rpc_serializer_.EncodeQueryTarget(target);
+  }
+
+  return result;
+}
+
+TargetData LocalSerializer::DecodeTargetData(
+    Reader* reader, firestore_client_Target& proto) const {
+  if (!reader->status().ok()) return TargetData();
+
+  model::TargetId target_id = proto.target_id;
+  model::ListenSequenceNumber sequence_number =
+      static_cast<model::ListenSequenceNumber>(
+          proto.last_listen_sequence_number);
+  SnapshotVersion version =
+      rpc_serializer_.DecodeVersion(reader->context(), proto.snapshot_version);
+  SnapshotVersion last_limbo_free_snapshot_version =
+      rpc_serializer_.DecodeVersion(reader->context(),
+                                    proto.last_limbo_free_snapshot_version);
+  ByteString resume_token(proto.resume_token);
+  Target target;
+
+  switch (proto.which_target_type) {
+    case firestore_client_Target_query_tag:
+      target =
+          rpc_serializer_.DecodeQueryTarget(reader->context(), proto.query);
+      break;
+
+    case firestore_client_Target_documents_tag:
+      target = rpc_serializer_.DecodeDocumentsTarget(reader->context(),
+                                                     proto.documents);
+      break;
+
+    default:
+      reader->Fail(
+          StringFormat("Unknown target_type: %s", proto.which_target_type));
+  }
+
+  if (!reader->status().ok()) return TargetData();
+  return TargetData(std::move(target), target_id, sequence_number,
+                    QueryPurpose::Listen, version,
+                    last_limbo_free_snapshot_version, std::move(resume_token));
+}
+
+Message<firestore_client_WriteBatch> LocalSerializer::EncodeMutationBatch(
+    const MutationBatch& mutation_batch) const {
+  Message<firestore_client_WriteBatch> result;
+
+  result->batch_id = mutation_batch.batch_id();
+
+  pb_size_t count = CheckedSize(mutation_batch.base_mutations().size());
+  result->base_writes_count = count;
+  result->base_writes = MakeArray<google_firestore_v1_Write>(count);
+  int i = 0;
+  for (const auto& mutation : mutation_batch.base_mutations()) {
+    result->base_writes[i] = rpc_serializer_.EncodeMutation(mutation);
+    ++i;
+  }
+
+  count = CheckedSize(mutation_batch.mutations().size());
+  result->writes_count = count;
+  result->writes = MakeArray<google_firestore_v1_Write>(count);
+  i = 0;
+  for (const auto& mutation : mutation_batch.mutations()) {
+    result->writes[i] = rpc_serializer_.EncodeMutation(mutation);
+    ++i;
+  }
+
+  result->local_write_time =
+      rpc_serializer_.EncodeTimestamp(mutation_batch.local_write_time());
+
+  return result;
+}
+
+MutationBatch LocalSerializer::DecodeMutationBatch(
+    nanopb::Reader* reader, firestore_client_WriteBatch& proto) const {
+  int batch_id = proto.batch_id;
+  Timestamp local_write_time = rpc_serializer_.DecodeTimestamp(
+      reader->context(), proto.local_write_time);
+
+  std::vector<Mutation> base_mutations;
+  for (size_t i = 0; i < proto.base_writes_count; i++) {
+    base_mutations.push_back(rpc_serializer_.DecodeMutation(
+        reader->context(), proto.base_writes[i]));
+  }
+
+  std::vector<Mutation> mutations;
+
+  // Squash old transform mutations into existing patch of set mutations. The
+  // replacement of representing `transforms` with `update_transforms` on the
+  // SDK means that old `transform` mutations stored in LevelDB need to be
+  // updated to `update_transforms`.
+  // TODO(b/174608374): Remove this code once we perform a schema migration.
+  for (size_t i = 0; i < proto.writes_count; ++i) {
+    google_firestore_v1_Write current_mutation = proto.writes[i];
+    bool has_transform = i + 1 < proto.writes_count &&
+                         proto.writes[i + 1].which_operation ==
+                             google_firestore_v1_Write_transform_tag;
+    if (has_transform) {
+      google_firestore_v1_Write& transform_mutation = proto.writes[i + 1];
+      HARD_ASSERT(
+          proto.writes[i].which_operation ==
+              google_firestore_v1_Write_update_tag,
+          "TransformMutation should be preceded by a patch or set mutation");
+      google_firestore_v1_Write new_mutation{current_mutation};
+      new_mutation.update_transforms_count =
+          transform_mutation.transform.field_transforms_count;
+      new_mutation.update_transforms =
+          transform_mutation.transform.field_transforms;
+      // Prevent double-freeing of the write's fields. The fields are now owned
+      // by the mutation.
+      transform_mutation.transform.field_transforms_count = 0;
+      transform_mutation.transform.field_transforms = nullptr;
+      mutations.push_back(
+          rpc_serializer_.DecodeMutation(reader->context(), new_mutation));
+      ++i;
+    } else {
+      mutations.push_back(
+          rpc_serializer_.DecodeMutation(reader->context(), current_mutation));
+    }
+  }
+
+  return MutationBatch(batch_id, local_write_time, std::move(base_mutations),
+                       std::move(mutations));
+}
+
+google_protobuf_Timestamp LocalSerializer::EncodeVersion(
+    const model::SnapshotVersion& version) const {
+  return rpc_serializer_.EncodeVersion(version);
+}
+
+model::SnapshotVersion LocalSerializer::DecodeVersion(
+    nanopb::Reader* reader, const google_protobuf_Timestamp& proto) const {
+  return rpc_serializer_.DecodeVersion(reader->context(), proto);
+}
+
+Message<firestore_BundleMetadata> LocalSerializer::EncodeBundle(
+    const BundleMetadata& metadata) const {
+  Message<firestore_BundleMetadata> result;
+
+  // Note: only fields intended to be stored get encoded here, `total_documents`
+  // and `total_bytes` are skipped for example, they are not useful once the
+  // bundle has been parsed and loaded.
+  result->id = rpc_serializer_.EncodeString(metadata.bundle_id());
+  result->version = metadata.version();
+  result->create_time = EncodeVersion(metadata.create_time());
+  return result;
+}
+
+BundleMetadata LocalSerializer::DecodeBundle(
+    Reader* reader, const firestore_BundleMetadata& proto) const {
+  return BundleMetadata(rpc_serializer_.DecodeString(proto.id), proto.version,
+                        DecodeVersion(reader, proto.create_time));
+}
+
+Message<firestore_NamedQuery> LocalSerializer::EncodeNamedQuery(
+    const NamedQuery& query) const {
+  Message<firestore_NamedQuery> result;
+
+  result->name = rpc_serializer_.EncodeString(query.query_name());
+  result->read_time = EncodeVersion(query.read_time());
+  result->bundled_query = EncodeBundledQuery(query.bundled_query());
+
+  return result;
+}
+
+NamedQuery LocalSerializer::DecodeNamedQuery(
+    nanopb::Reader* reader, firestore_NamedQuery& proto) const {
+  return NamedQuery(rpc_serializer_.DecodeString(proto.name),
+                    DecodeBundledQuery(reader, proto.bundled_query),
+                    DecodeVersion(reader, proto.read_time));
+}
+
+firestore_BundledQuery LocalSerializer::EncodeBundledQuery(
+    const BundledQuery& query) const {
+  firestore_BundledQuery result{};
+
+  result.limit_type = query.limit_type() == core::LimitType::First
+                          ? _firestore_BundledQuery_LimitType::
+                                firestore_BundledQuery_LimitType_FIRST
+                          : _firestore_BundledQuery_LimitType::
+                                firestore_BundledQuery_LimitType_LAST;
+
+  auto query_target = rpc_serializer_.EncodeQueryTarget(query.target());
+  result.parent = query_target.parent;
+  result.which_query_type = firestore_BundledQuery_structured_query_tag;
+  result.structured_query = query_target.structured_query;
+
+  return result;
+}
+
+BundledQuery LocalSerializer::DecodeBundledQuery(
+    nanopb::Reader* reader, firestore_BundledQuery& query) const {
+  // The QueryTarget oneof only has a single valid value.
+  if (query.which_query_type != firestore_BundledQuery_structured_query_tag) {
+    reader->Fail(
+        StringFormat("Unknown bundled query_type: %s", query.which_query_type));
+    return BundledQuery();
+  }
+
+  auto limit_type = query.limit_type ==
+                            _firestore_BundledQuery_LimitType::
+                                firestore_BundledQuery_LimitType_FIRST
+                        ? core::LimitType::First
+                        : core::LimitType::Last;
+  return BundledQuery(
+      rpc_serializer_.DecodeStructuredQuery(reader->context(), query.parent,
+                                            query.structured_query),
+      limit_type);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.h
new file mode 100644
index 0000000..2a7396e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_serializer.h	
@@ -0,0 +1,190 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LOCAL_SERIALIZER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LOCAL_SERIALIZER_H_
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+typedef struct _firestore_BundleMetadata firestore_BundleMetadata;
+typedef struct _firestore_BundledQuery firestore_BundledQuery;
+typedef struct _firestore_NamedQuery firestore_NamedQuery;
+typedef struct _firestore_client_MaybeDocument firestore_client_MaybeDocument;
+typedef struct _firestore_client_NoDocument firestore_client_NoDocument;
+typedef struct _firestore_client_Target firestore_client_Target;
+typedef struct _firestore_client_UnknownDocument
+    firestore_client_UnknownDocument;
+typedef struct _firestore_client_WriteBatch firestore_client_WriteBatch;
+
+namespace nanopb {
+template <typename T>
+class Message;
+
+class Reader;
+class Writer;
+}  // namespace nanopb
+
+namespace bundle {
+
+class BundleMetadata;
+class BundledQuery;
+class NamedQuery;
+
+}  // namespace bundle
+
+namespace local {
+
+class TargetData;
+
+/**
+ * @brief Serializer for values stored in the LocalStore.
+ *
+ * All errors that occur during serialization are fatal.
+ *
+ * All deserialization methods (that can fail) take a nanopb::Reader parameter
+ * whose status will be set to failed upon an error. Callers must check this
+ * before using the returned value via `reader->status()`. A deserialization
+ * method might fail if a protocol buffer is missing a critical field or has a
+ * value we can't interpret. On error, the return value from a deserialization
+ * method is unspecified.
+ *
+ * Note that local::LocalSerializer currently delegates to the
+ * remote::Serializer (for the Firestore v1 RPC protocol) to save implementation
+ * time and code duplication. We'll need to revisit this when the RPC protocol
+ * we use diverges from local storage.
+ */
+class LocalSerializer {
+ public:
+  explicit LocalSerializer(remote::Serializer rpc_serializer)
+      : rpc_serializer_(std::move(rpc_serializer)) {
+  }
+
+  /**
+   * @brief Encodes a MaybeDocument model to the equivalent nanopb proto for
+   * local storage.
+   */
+  nanopb::Message<firestore_client_MaybeDocument> EncodeMaybeDocument(
+      const model::MutableDocument& maybe_doc) const;
+
+  /**
+   * @brief Decodes nanopb proto representing a MaybeDocument proto to the
+   * equivalent model.
+   * Modifies the provided proto to release ownership of any Value messages.
+   */
+  model::MutableDocument DecodeMaybeDocument(
+      nanopb::Reader* reader, firestore_client_MaybeDocument& proto) const;
+
+  /**
+   * @brief Encodes a TargetData to the equivalent nanopb proto, representing a
+   * ::firestore::proto::Target, for local storage.
+   */
+  nanopb::Message<firestore_client_Target> EncodeTargetData(
+      const TargetData& target_data) const;
+
+  /**
+   * @brief Decodes nanopb proto representing a ::firestore::proto::Target proto
+   * to the equivalent TargetData.
+   * Modifies the provided proto to release ownership of any Value messages.
+   */
+  TargetData DecodeTargetData(nanopb::Reader* reader,
+                              firestore_client_Target& proto) const;
+
+  /**
+   * @brief Encodes a MutationBatch to the equivalent nanopb proto, representing
+   * a ::firestore::client::WriteBatch, for local storage in the mutation queue.
+   */
+  nanopb::Message<firestore_client_WriteBatch> EncodeMutationBatch(
+      const model::MutationBatch& mutation_batch) const;
+
+  /**
+   * @brief Decodes a nanopb proto representing a
+   * ::firestore::client::WriteBatch proto to the equivalent MutationBatch.
+   * Modifies the provided proto to release ownership of any Value messages.
+   */
+  model::MutationBatch DecodeMutationBatch(
+      nanopb::Reader* reader, firestore_client_WriteBatch& proto) const;
+
+  google_protobuf_Timestamp EncodeVersion(
+      const model::SnapshotVersion& version) const;
+
+  model::SnapshotVersion DecodeVersion(
+      nanopb::Reader* reader, const google_protobuf_Timestamp& proto) const;
+
+  nanopb::Message<firestore_BundleMetadata> EncodeBundle(
+      const bundle::BundleMetadata& metadata) const;
+  bundle::BundleMetadata DecodeBundle(
+      nanopb::Reader* reader, const firestore_BundleMetadata& proto) const;
+
+  nanopb::Message<firestore_NamedQuery> EncodeNamedQuery(
+      const bundle::NamedQuery& query) const;
+
+  /**
+   * Decodes the named query. Modifies the provided proto to release ownership
+   * of any Value messages.
+   */
+  bundle::NamedQuery DecodeNamedQuery(nanopb::Reader* reader,
+                                      firestore_NamedQuery& proto) const;
+
+ private:
+  /**
+   * Encodes a Document for local storage. This differs from the v1 RPC
+   * serializer for Documents in that it preserves the update_time, which is
+   * considered an output only value by the server.
+   */
+  google_firestore_v1_Document EncodeDocument(
+      const model::MutableDocument& doc) const;
+
+  model::MutableDocument DecodeDocument(nanopb::Reader* reader,
+                                        google_firestore_v1_Document& proto,
+                                        bool has_committed_mutations) const;
+
+  firestore_client_NoDocument EncodeNoDocument(
+      const model::MutableDocument& no_doc) const;
+
+  model::MutableDocument DecodeNoDocument(
+      nanopb::Reader* reader,
+      const firestore_client_NoDocument& proto,
+      bool has_committed_mutations) const;
+
+  firestore_client_UnknownDocument EncodeUnknownDocument(
+      const model::MutableDocument& unknown_doc) const;
+  model::MutableDocument DecodeUnknownDocument(
+      nanopb::Reader* reader,
+      const firestore_client_UnknownDocument& proto) const;
+
+  firestore_BundledQuery EncodeBundledQuery(
+      const bundle::BundledQuery& query) const;
+  bundle::BundledQuery DecodeBundledQuery(nanopb::Reader* reader,
+                                          firestore_BundledQuery& query) const;
+
+  remote::Serializer rpc_serializer_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LOCAL_SERIALIZER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.cc
new file mode 100644
index 0000000..6d2ac79
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.cc	
@@ -0,0 +1,641 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/local_store.h"
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/local/bundle_cache.h"
+#include "Firestore/core/src/local/local_documents_view.h"
+#include "Firestore/core/src/local/local_view_changes.h"
+#include "Firestore/core/src/local/local_write_result.h"
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/persistence.h"
+#include "Firestore/core/src/local/query_engine.h"
+#include "Firestore/core/src/local/query_result.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/target_cache.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/mutation_batch_result.h"
+#include "Firestore/core/src/model/patch_mutation.h"
+#include "Firestore/core/src/remote/remote_event.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/to_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using auth::User;
+using core::Query;
+using core::Target;
+using core::TargetIdGenerator;
+using model::BatchId;
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::DocumentUpdateMap;
+using model::DocumentVersionMap;
+using model::ListenSequenceNumber;
+using model::MutableDocument;
+using model::MutableDocumentMap;
+using model::Mutation;
+using model::MutationBatch;
+using model::MutationBatchResult;
+using model::ObjectValue;
+using model::PatchMutation;
+using model::Precondition;
+using model::ResourcePath;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::ByteString;
+using remote::TargetChange;
+
+/**
+ * The maximum time to leave a resume token buffered without writing it out.
+ * This value is arbitrary: it's long enough to avoid several writes (possibly
+ * indefinitely if updates come more frequently than this) but short enough that
+ * restarting after crashing will still have a pretty recent resume token.
+ */
+const int64_t kResumeTokenMaxAgeSeconds = 5 * 60;  // 5 minutes
+
+}  // namespace
+
+LocalStore::LocalStore(Persistence* persistence,
+                       QueryEngine* query_engine,
+                       const User& initial_user)
+    : persistence_(persistence),
+      mutation_queue_(persistence->GetMutationQueueForUser(initial_user)),
+      remote_document_cache_(persistence->remote_document_cache()),
+      target_cache_(persistence->target_cache()),
+      bundle_cache_(persistence->bundle_cache()),
+      query_engine_(query_engine),
+      local_documents_(
+          absl::make_unique<LocalDocumentsView>(remote_document_cache_,
+                                                mutation_queue_,
+                                                persistence->index_manager())) {
+  persistence->reference_delegate()->AddInMemoryPins(&local_view_references_);
+  target_id_generator_ = TargetIdGenerator::TargetCacheTargetIdGenerator(0);
+  query_engine_->SetLocalDocumentsView(local_documents_.get());
+}
+
+LocalStore::~LocalStore() = default;
+
+void LocalStore::Start() {
+  StartMutationQueue();
+  TargetId target_id = target_cache_->highest_target_id();
+  target_id_generator_ =
+      TargetIdGenerator::TargetCacheTargetIdGenerator(target_id);
+}
+
+void LocalStore::StartMutationQueue() {
+  persistence_->Run("Start MutationQueue", [&] { mutation_queue_->Start(); });
+}
+
+DocumentMap LocalStore::HandleUserChange(const User& user) {
+  // Swap out the mutation queue, grabbing the pending mutation batches before
+  // and after.
+  std::vector<MutationBatch> old_batches = persistence_->Run(
+      "OldBatches", [&] { return mutation_queue_->AllMutationBatches(); });
+
+  // The old one has a reference to the mutation queue, so null it out first.
+  local_documents_.reset();
+  mutation_queue_ = persistence_->GetMutationQueueForUser(user);
+
+  StartMutationQueue();
+
+  return persistence_->Run("NewBatches", [&] {
+    std::vector<MutationBatch> new_batches =
+        mutation_queue_->AllMutationBatches();
+
+    // Recreate our LocalDocumentsView using the new MutationQueue.
+    local_documents_ = absl::make_unique<LocalDocumentsView>(
+        remote_document_cache_, mutation_queue_, persistence_->index_manager());
+    query_engine_->SetLocalDocumentsView(local_documents_.get());
+
+    // Union the old/new changed keys.
+    DocumentKeySet changed_keys;
+    for (const std::vector<MutationBatch>* batches :
+         {&old_batches, &new_batches}) {
+      for (const MutationBatch& batch : *batches) {
+        for (const Mutation& mutation : batch.mutations()) {
+          changed_keys = changed_keys.insert(mutation.key());
+        }
+      }
+    }
+
+    // Return the set of all (potentially) changed documents as the result of
+    // the user change.
+    return local_documents_->GetDocuments(changed_keys);
+  });
+}
+
+LocalWriteResult LocalStore::WriteLocally(std::vector<Mutation>&& mutations) {
+  Timestamp local_write_time = Timestamp::Now();
+  DocumentKeySet keys;
+  for (const Mutation& mutation : mutations) {
+    keys = keys.insert(mutation.key());
+  }
+
+  return persistence_->Run("Locally write mutations", [&] {
+    // Load and apply all existing mutations. This lets us compute the current
+    // base state for all non-idempotent transforms before applying any
+    // additional user-provided writes.
+    DocumentMap existing_documents = local_documents_->GetDocuments(keys);
+
+    // For non-idempotent mutations (such as `FieldValue.increment()`), we
+    // record the base state in a separate patch mutation. This is later used to
+    // guarantee consistent values and prevents flicker even if the backend
+    // sends us an update that already includes our transform.
+    std::vector<Mutation> base_mutations;
+    for (const Mutation& mutation : mutations) {
+      absl::optional<Document> base_document =
+          existing_documents.get(mutation.key());
+
+      absl::optional<ObjectValue> base_value =
+          mutation.ExtractTransformBaseValue(*base_document);
+      if (base_value) {
+        // NOTE: The base state should only be applied if there's some existing
+        // document to override, so use a Precondition of exists=true
+        model::FieldMask mask = base_value->ToFieldMask();
+        base_mutations.push_back(PatchMutation(mutation.key(),
+                                               std::move(*base_value), mask,
+                                               Precondition::Exists(true)));
+      }
+    }
+
+    MutationBatch batch = mutation_queue_->AddMutationBatch(
+        local_write_time, std::move(base_mutations), std::move(mutations));
+    batch.ApplyToLocalDocumentSet(existing_documents);
+    return LocalWriteResult{batch.batch_id(), std::move(existing_documents)};
+  });
+}
+
+DocumentMap LocalStore::AcknowledgeBatch(
+    const MutationBatchResult& batch_result) {
+  return persistence_->Run("Acknowledge batch", [&] {
+    const MutationBatch& batch = batch_result.batch();
+    mutation_queue_->AcknowledgeBatch(batch, batch_result.stream_token());
+    ApplyBatchResult(batch_result);
+    mutation_queue_->PerformConsistencyCheck();
+
+    return local_documents_->GetDocuments(batch.keys());
+  });
+}
+
+void LocalStore::ApplyBatchResult(const MutationBatchResult& batch_result) {
+  const MutationBatch& batch = batch_result.batch();
+  DocumentKeySet doc_keys = batch.keys();
+  const DocumentVersionMap& versions = batch_result.doc_versions();
+
+  for (const DocumentKey& doc_key : doc_keys) {
+    MutableDocument doc = remote_document_cache_->Get(doc_key);
+
+    auto ack_version_iter = versions.find(doc_key);
+    HARD_ASSERT(ack_version_iter != versions.end(),
+                "doc_versions should contain every doc in the write.");
+    const SnapshotVersion& ack_version = ack_version_iter->second;
+
+    if (doc.version() < ack_version) {
+      batch.ApplyToRemoteDocument(doc, batch_result);
+      if (doc.is_valid_document()) {
+        remote_document_cache_->Add(doc, batch_result.commit_version());
+      }
+    }
+  }
+
+  mutation_queue_->RemoveMutationBatch(batch);
+}
+
+DocumentMap LocalStore::RejectBatch(BatchId batch_id) {
+  return persistence_->Run("Reject batch", [&] {
+    absl::optional<MutationBatch> to_reject =
+        mutation_queue_->LookupMutationBatch(batch_id);
+    HARD_ASSERT(to_reject.has_value(), "Attempt to reject nonexistent batch!");
+
+    mutation_queue_->RemoveMutationBatch(*to_reject);
+    mutation_queue_->PerformConsistencyCheck();
+
+    return local_documents_->GetDocuments(to_reject->keys());
+  });
+}
+
+ByteString LocalStore::GetLastStreamToken() {
+  return mutation_queue_->GetLastStreamToken();
+}
+
+void LocalStore::SetLastStreamToken(const ByteString& stream_token) {
+  persistence_->Run("Set stream token",
+                    [&] { mutation_queue_->SetLastStreamToken(stream_token); });
+}
+
+const SnapshotVersion& LocalStore::GetLastRemoteSnapshotVersion() const {
+  return target_cache_->GetLastRemoteSnapshotVersion();
+}
+
+model::DocumentMap LocalStore::ApplyRemoteEvent(
+    const remote::RemoteEvent& remote_event) {
+  const SnapshotVersion& last_remote_version =
+      target_cache_->GetLastRemoteSnapshotVersion();
+
+  return persistence_->Run("Apply remote event", [&] {
+    // TODO(gsoltis): move the sequence number into the reference delegate.
+    ListenSequenceNumber sequence_number =
+        persistence_->current_sequence_number();
+
+    for (const auto& entry : remote_event.target_changes()) {
+      TargetId target_id = entry.first;
+      const TargetChange& change = entry.second;
+
+      auto found = target_data_by_target_.find(target_id);
+      if (found == target_data_by_target_.end()) {
+        // We don't update the remote keys if the query is not active. This
+        // ensures that we persist the updated target data along with the
+        // updated assignment.
+        continue;
+      }
+
+      TargetData old_target_data = found->second;
+
+      target_cache_->RemoveMatchingKeys(change.removed_documents(), target_id);
+      target_cache_->AddMatchingKeys(change.added_documents(), target_id);
+
+      // Update the resume token if the change includes one. Don't clear any
+      // preexisting value. Bump the sequence number as well, so that documents
+      // being removed now are ordered later than documents that were previously
+      // removed from this target.
+      const ByteString& resume_token = change.resume_token();
+      // Update the resume token if the change includes one.
+      if (!resume_token.empty()) {
+        TargetData new_target_data =
+            old_target_data
+                .WithResumeToken(resume_token, remote_event.snapshot_version())
+                .WithSequenceNumber(sequence_number);
+        target_data_by_target_[target_id] = new_target_data;
+
+        // Update the target data if there are target changes (or if sufficient
+        // time has passed since the last update).
+        if (ShouldPersistTargetData(new_target_data, old_target_data, change)) {
+          target_cache_->UpdateTarget(new_target_data);
+        }
+      }
+    }
+
+    const DocumentKeySet& limbo_documents =
+        remote_event.limbo_document_changes();
+    for (const auto& kv : remote_event.document_updates()) {
+      // If this was a limbo resolution, make sure we mark when it was accessed.
+      if (limbo_documents.contains(kv.first)) {
+        persistence_->reference_delegate()->UpdateLimboDocument(kv.first);
+      }
+    }
+
+    auto changed_docs = PopulateDocumentChanges(
+        remote_event.document_updates(), DocumentVersionMap(),
+        remote_event.snapshot_version());
+
+    // HACK: The only reason we allow omitting snapshot version is so we can
+    // synthesize remote events when we get permission denied errors while
+    // trying to resolve the state of a locally cached document that is in
+    // limbo.
+    const SnapshotVersion& remote_version = remote_event.snapshot_version();
+    if (remote_version != SnapshotVersion::None()) {
+      HARD_ASSERT(remote_version >= last_remote_version,
+                  "Watch stream reverted to previous snapshot?? (%s < %s)",
+                  remote_version.ToString(), last_remote_version.ToString());
+      target_cache_->SetLastRemoteSnapshotVersion(remote_version);
+    }
+
+    return local_documents_->GetLocalViewOfDocuments(changed_docs);
+  });
+}
+
+bool LocalStore::ShouldPersistTargetData(const TargetData& new_target_data,
+                                         const TargetData& old_target_data,
+                                         const TargetChange& change) const {
+  // Avoid clearing any existing value
+  HARD_ASSERT(!new_target_data.resume_token().empty(),
+              "Attempted to persist target data with empty resume token");
+
+  // Always persist target data if we don't already have a resume token.
+  if (old_target_data.resume_token().empty()) return true;
+
+  // Don't allow resume token changes to be buffered indefinitely. This allows
+  // us to be reasonably up-to-date after a crash and avoids needing to loop
+  // over all active queries on shutdown. Especially in the browser we may not
+  // get time to do anything interesting while the current tab is closing.
+  int64_t new_seconds =
+      new_target_data.snapshot_version().timestamp().seconds();
+  int64_t old_seconds =
+      old_target_data.snapshot_version().timestamp().seconds();
+  int64_t time_delta = new_seconds - old_seconds;
+  if (time_delta >= kResumeTokenMaxAgeSeconds) return true;
+
+  // Otherwise if the only thing that has changed about a target is its resume
+  // token then it's not worth persisting. Note that the RemoteStore keeps an
+  // in-memory view of the currently active targets which includes the current
+  // resume token, so stream failure or user changes will still use an
+  // up-to-date resume token regardless of what we do here.
+  size_t changes = change.added_documents().size() +
+                   change.modified_documents().size() +
+                   change.removed_documents().size();
+  return changes > 0;
+}
+
+absl::optional<TargetData> LocalStore::GetTargetData(
+    const core::Target& target) {
+  auto target_id = target_id_by_target_.find(target);
+  if (target_id != target_id_by_target_.end()) {
+    return target_data_by_target_[target_id->second];
+  }
+  return target_cache_->GetTarget(target);
+}
+
+void LocalStore::NotifyLocalViewChanges(
+    const std::vector<local::LocalViewChanges>& view_changes) {
+  persistence_->Run("NotifyLocalViewChanges", [&] {
+    for (const LocalViewChanges& view_change : view_changes) {
+      int target_id = view_change.target_id();
+
+      for (const DocumentKey& key : view_change.removed_keys()) {
+        persistence_->reference_delegate()->RemoveReference(key);
+      }
+      local_view_references_.AddReferences(view_change.added_keys(), target_id);
+      local_view_references_.RemoveReferences(view_change.removed_keys(),
+                                              target_id);
+
+      if (!view_change.is_from_cache()) {
+        const auto& entry = target_data_by_target_.find(target_id);
+        HARD_ASSERT(
+            entry != target_data_by_target_.end(),
+            "Can't set limbo-free snapshot version for unknown target: %s",
+            target_id);
+        const TargetData& target_data = entry->second;
+
+        // Advance the last limbo free snapshot version
+        SnapshotVersion last_limbo_free_snapshot_version =
+            target_data.snapshot_version();
+        TargetData updated_target_data =
+            target_data.WithLastLimboFreeSnapshotVersion(
+                last_limbo_free_snapshot_version);
+        target_data_by_target_[target_id] = updated_target_data;
+      }
+    }
+  });
+}
+
+absl::optional<MutationBatch> LocalStore::GetNextMutationBatch(
+    BatchId batch_id) {
+  return persistence_->Run("NextMutationBatchAfterBatchID", [&] {
+    return mutation_queue_->NextMutationBatchAfterBatchId(batch_id);
+  });
+}
+
+const Document LocalStore::ReadDocument(const DocumentKey& key) {
+  return persistence_->Run("ReadDocument",
+                           [&] { return local_documents_->GetDocument(key); });
+}
+
+BatchId LocalStore::GetHighestUnacknowledgedBatchId() {
+  return persistence_->Run("GetHighestUnacknowledgedBatchId", [&] {
+    return mutation_queue_->GetHighestUnacknowledgedBatchId();
+  });
+}
+
+TargetData LocalStore::AllocateTarget(Target target) {
+  TargetData target_data = persistence_->Run("Allocate target", [&] {
+    absl::optional<TargetData> cached = target_cache_->GetTarget(target);
+    // TODO(mcg): freshen last accessed date if cached exists?
+    if (!cached) {
+      cached = TargetData(std::move(target), target_id_generator_.NextId(),
+                          persistence_->current_sequence_number(),
+                          QueryPurpose::Listen);
+      target_cache_->AddTarget(*cached);
+    }
+    return *cached;
+  });
+
+  // Sanity check to ensure that even when resuming a query it's not currently
+  // active.
+  TargetId target_id = target_data.target_id();
+  if (target_data_by_target_.find(target_id) == target_data_by_target_.end()) {
+    target_data_by_target_[target_id] = target_data;
+    target_id_by_target_[target_data.target()] = target_id;
+  }
+
+  return target_data;
+}
+
+void LocalStore::ReleaseTarget(TargetId target_id) {
+  persistence_->Run("Release target", [&] {
+    auto found = target_data_by_target_.find(target_id);
+    HARD_ASSERT(found != target_data_by_target_.end(),
+                "Tried to release a non-existent target: %s", target_id);
+
+    TargetData target_data = found->second;
+
+    // References for documents sent via Watch are automatically removed when we
+    // delete a query's target data from the reference delegate. Since this does
+    // not remove references for locally mutated documents, we have to remove
+    // the target associations for these documents manually.
+    DocumentKeySet removed =
+        local_view_references_.RemoveReferences(target_data.target_id());
+    for (const DocumentKey& key : removed) {
+      persistence_->reference_delegate()->RemoveReference(key);
+    }
+
+    // Note: This also updates the target cache.
+    persistence_->reference_delegate()->RemoveTarget(target_data);
+    target_data_by_target_.erase(target_id);
+    target_id_by_target_.erase(target_data.target());
+  });
+}
+
+QueryResult LocalStore::ExecuteQuery(const Query& query,
+                                     bool use_previous_results) {
+  return persistence_->Run("ExecuteQuery", [&] {
+    absl::optional<TargetData> target_data = GetTargetData(query.ToTarget());
+    SnapshotVersion last_limbo_free_snapshot_version;
+    DocumentKeySet remote_keys;
+
+    if (target_data) {
+      last_limbo_free_snapshot_version =
+          target_data->last_limbo_free_snapshot_version();
+      remote_keys = target_cache_->GetMatchingKeys(target_data->target_id());
+    }
+
+    model::DocumentMap documents = query_engine_->GetDocumentsMatchingQuery(
+        query,
+        use_previous_results ? last_limbo_free_snapshot_version
+                             : SnapshotVersion::None(),
+        use_previous_results ? remote_keys : DocumentKeySet{});
+    return QueryResult(std::move(documents), std::move(remote_keys));
+  });
+}
+
+DocumentKeySet LocalStore::GetRemoteDocumentKeys(TargetId target_id) {
+  return persistence_->Run("RemoteDocumentKeysForTarget", [&] {
+    return target_cache_->GetMatchingKeys(target_id);
+  });
+}
+
+LruResults LocalStore::CollectGarbage(LruGarbageCollector* garbage_collector) {
+  return persistence_->Run("Collect garbage", [&] {
+    return garbage_collector->Collect(target_data_by_target_);
+  });
+}
+
+bool LocalStore::HasNewerBundle(const bundle::BundleMetadata& metadata) {
+  return persistence_->Run("Has newer bundle", [&] {
+    absl::optional<bundle::BundleMetadata> cached_metadata =
+        bundle_cache_->GetBundleMetadata(metadata.bundle_id());
+    return cached_metadata.has_value() &&
+           cached_metadata->create_time() >= metadata.create_time();
+  });
+}
+
+void LocalStore::SaveBundle(const bundle::BundleMetadata& metadata) {
+  return persistence_->Run(
+      "Save bundle", [&] { bundle_cache_->SaveBundleMetadata(metadata); });
+}
+
+DocumentMap LocalStore::ApplyBundledDocuments(
+    const MutableDocumentMap& bundled_documents, const std::string& bundle_id) {
+  // Allocates a target to hold all document keys from the bundle, such that
+  // they will not get garbage collected right away.
+  TargetData umbrella_target = AllocateTarget(NewUmbrellaTarget(bundle_id));
+  return persistence_->Run("Apply bundle documents", [&] {
+    DocumentKeySet keys;
+    DocumentUpdateMap document_updates;
+    DocumentVersionMap versions;
+
+    for (const auto& kv : bundled_documents) {
+      const DocumentKey& key = kv.first;
+      const auto& doc = kv.second;
+      if (doc.is_found_document()) {
+        keys = keys.insert(key);
+      }
+      document_updates.emplace(key, doc);
+      versions.emplace(key, doc.version());
+    }
+
+    target_cache_->RemoveMatchingKeysForTarget(umbrella_target.target_id());
+    target_cache_->AddMatchingKeys(keys, umbrella_target.target_id());
+
+    auto changed_docs = PopulateDocumentChanges(document_updates, versions,
+                                                SnapshotVersion::None());
+    return local_documents_->GetLocalViewOfDocuments(changed_docs);
+  });
+}
+
+void LocalStore::SaveNamedQuery(const bundle::NamedQuery& query,
+                                const model::DocumentKeySet& keys) {
+  // Allocate a target for the named query such that it can be resumed from
+  // associated read time if users use it to listen. NOTE: this also means if no
+  // corresponding target exists, the new target will remain active and will not
+  // get collected, unless users happen to unlisten the query.
+  TargetData existing = AllocateTarget(query.bundled_query().target());
+  int target_id = existing.target_id();
+
+  return persistence_->Run("Save named query", [&] {
+    // Only update the matching documents if it is newer than what the SDK
+    // already has.
+    if (query.read_time() > existing.snapshot_version()) {
+      // Update existing target data because the query from the bundle is newer.
+      TargetData new_target_data =
+          existing.WithResumeToken(nanopb::ByteString(), query.read_time());
+
+      target_cache_->UpdateTarget(new_target_data);
+      target_data_by_target_.emplace(target_id, std::move(new_target_data));
+      target_cache_->RemoveMatchingKeysForTarget(target_id);
+      target_cache_->AddMatchingKeys(keys, target_id);
+    }
+
+    bundle_cache_->SaveNamedQuery(query);
+  });
+}
+
+absl::optional<bundle::NamedQuery> LocalStore::GetNamedQuery(
+    const std::string& query) {
+  return persistence_->Run("Get named query",
+                           [&] { return bundle_cache_->GetNamedQuery(query); });
+}
+
+Target LocalStore::NewUmbrellaTarget(const std::string& bundle_id) {
+  // It is OK that the path used for the query is not valid, because this will
+  // not be read and queried.
+  return Query(ResourcePath::FromString("__bundle__/docs/" + bundle_id))
+      .ToTarget();
+}
+
+MutableDocumentMap LocalStore::PopulateDocumentChanges(
+    const DocumentUpdateMap& documents,
+    const DocumentVersionMap& document_versions,
+    const SnapshotVersion& global_version) {
+  MutableDocumentMap changed_docs;
+
+  DocumentKeySet updated_keys;
+  for (const auto& kv : documents) {
+    updated_keys = updated_keys.insert(kv.first);
+  }
+  // Each loop iteration only affects its "own" doc, so it's safe to get all
+  // the remote documents in advance in a single call.
+  MutableDocumentMap existing_docs =
+      remote_document_cache_->GetAll(updated_keys);
+
+  for (const auto& kv : documents) {
+    const DocumentKey& key = kv.first;
+    const MutableDocument& doc = kv.second;
+    MutableDocument existing_doc = *existing_docs.get(key);
+    auto search_version = document_versions.find(key);
+    const SnapshotVersion& read_time = search_version != document_versions.end()
+                                           ? search_version->second
+                                           : global_version;
+
+    // Note: The order of the steps below is important, since we want to
+    // ensure that rejected limbo resolutions (which fabricate NoDocuments
+    // with SnapshotVersion::None) never add documents to cache.
+    if (doc.is_no_document() && doc.version() == SnapshotVersion::None()) {
+      // NoDocuments with SnapshotVersion::None are used in manufactured
+      // events. We remove these documents from cache since we lost access.
+      remote_document_cache_->Remove(key);
+      changed_docs = changed_docs.insert(key, doc);
+    } else if (!existing_doc.is_valid_document() ||
+               doc.version() > existing_doc.version() ||
+               (doc.version() == existing_doc.version() &&
+                existing_doc.has_pending_writes())) {
+      HARD_ASSERT(read_time != SnapshotVersion::None(),
+                  "Cannot add a document when the remote version is zero");
+      remote_document_cache_->Add(doc, read_time);
+      changed_docs = changed_docs.insert(key, doc);
+    } else {
+      LOG_DEBUG(
+          "LocalStore Ignoring outdated update for %s. "
+          "Current version: %s  Remote version: %s",
+          key.ToString(), existing_doc.version().ToString(),
+          doc.version().ToString());
+    }
+  }
+  return changed_docs;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.h
new file mode 100644
index 0000000..1d403e5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_store.h	
@@ -0,0 +1,376 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LOCAL_STORE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LOCAL_STORE_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/bundle/bundle_callback.h"
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/core/target_id_generator.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace auth {
+class User;
+}  // namespace auth
+
+namespace core {
+class Query;
+}  // namespace core
+
+namespace remote {
+class RemoteEvent;
+class TargetChange;
+}  // namespace remote
+
+namespace local {
+
+class BundleCache;
+class LocalDocumentsView;
+class LocalViewChanges;
+class LocalWriteResult;
+class LruGarbageCollector;
+class MutationQueue;
+class Persistence;
+class QueryEngine;
+class QueryResult;
+class RemoteDocumentCache;
+class TargetCache;
+
+struct LruResults;
+
+/**
+ * Local storage in the Firestore client. Coordinates persistence components
+ * like the mutation queue and remote document cache to present a latency
+ * compensated view of stored data.
+ *
+ * The LocalStore is responsible for accepting mutations from the SyncEngine.
+ * Writes from the client are put into a queue as provisional Mutations until
+ * they are processed by the RemoteStore and confirmed as having been written to
+ * the server.
+ *
+ * The local store provides the local version of documents that have been
+ * modified locally. It maintains the constraint:
+ *
+ *  LocalDocument = RemoteDocument + Active(LocalMutations)
+ *
+ * (Active mutations are those that are enqueued and have not been previously
+ * acknowledged or rejected).
+ *
+ * The RemoteDocument ("ground truth") state is provided via the
+ * ApplyChangeBatch method. It will be some version of a server-provided
+ * document OR will be a server-provided document PLUS acknowledged mutations:
+ *
+ *  RemoteDocument' = RemoteDocument + Acknowledged(LocalMutations)
+ *
+ * Note that this "dirty" version of a RemoteDocument will not be identical to a
+ * server base version, since it has LocalMutations added to it pending getting
+ * an authoritative copy from the server.
+ *
+ * Since LocalMutations can be rejected by the server, we have to be able to
+ * revert a LocalMutation that has already been applied to the LocalDocument
+ * (typically done by replaying all remaining LocalMutations to the
+ * RemoteDocument to re-apply).
+ *
+ * It also maintains the persistence of mapping queries to resume tokens and
+ * target ids.
+ *
+ * The LocalStore must be able to efficiently execute queries against its local
+ * cache of the documents, to provide the initial set of results before any
+ * remote changes have been received.
+ */
+class LocalStore : public bundle::BundleCallback {
+ public:
+  LocalStore(Persistence* persistence,
+             QueryEngine* query_engine,
+             const auth::User& initial_user);
+
+  ~LocalStore();
+
+  /** Performs any initial startup actions required by the local store. */
+  void Start();
+
+  /**
+   * Tells the LocalStore that the currently authenticated user has changed.
+   *
+   * In response the local store switches the mutation queue to the new user and
+   * returns any resulting document changes.
+   */
+  model::DocumentMap HandleUserChange(const auth::User& user);
+
+  /** Accepts locally generated Mutations and commits them to storage. */
+  LocalWriteResult WriteLocally(std::vector<model::Mutation>&& mutations);
+
+  /**
+   * Returns the current value of a document with a given key, or an invalid
+   * document if not found.
+   */
+  const model::Document ReadDocument(const model::DocumentKey& key);
+
+  /**
+   * Acknowledges the given batch.
+   *
+   * On the happy path when a batch is acknowledged, the local store will:
+   *
+   * + remove the batch from the mutation queue;
+   * + apply the changes to the remote document cache;
+   * + recalculate the latency compensated view implied by those changes (there
+   * may be mutations in the queue that affect the documents but haven't been
+   * acknowledged yet); and
+   * + give the changed documents back the sync engine
+   *
+   * @return The resulting (modified) documents.
+   */
+  model::DocumentMap AcknowledgeBatch(
+      const model::MutationBatchResult& batch_result);
+
+  /**
+   * Removes mutations from the MutationQueue for the specified batch.
+   * LocalDocuments will be recalculated.
+   *
+   * @return The resulting (modified) documents.
+   */
+  model::DocumentMap RejectBatch(model::BatchId batch_id);
+
+  /** Returns the last recorded stream token for the current user. */
+  nanopb::ByteString GetLastStreamToken();
+
+  /**
+   * Sets the stream token for the current user without acknowledging any
+   * mutation batch. This is usually only useful after a stream handshake or in
+   * response to an error that requires clearing the stream token.
+   */
+  void SetLastStreamToken(const nanopb::ByteString& stream_token);
+
+  /**
+   * Returns the last consistent snapshot processed (used by the RemoteStore to
+   * determine whether to buffer incoming snapshots from the backend).
+   */
+  const model::SnapshotVersion& GetLastRemoteSnapshotVersion() const;
+
+  /**
+   * Updates the "ground-state" (remote) documents. We assume that the remote
+   * event reflects any write batches that have been acknowledged or rejected
+   * (i.e. we do not re-apply local mutations to updates from this event).
+   *
+   * LocalDocuments are re-calculated if there are remaining mutations in the
+   * queue.
+   */
+  model::DocumentMap ApplyRemoteEvent(const remote::RemoteEvent& remote_event);
+
+  /**
+   * Returns the keys of the documents that are associated with the given
+   * target_id in the remote table.
+   */
+  model::DocumentKeySet GetRemoteDocumentKeys(model::TargetId target_id);
+
+  /**
+   * Assigns a target an internal ID so that its results can be pinned so they
+   * don't get GC'd. A target must be allocated in the local store before the
+   * store can be used to manage its view.
+   *
+   * Allocating an already allocated target will return the existing
+   * `TargetData` for that target.
+   */
+  TargetData AllocateTarget(core::Target target);
+
+  /**
+   * Unpin all the documents associated with a target.
+   *
+   * Releasing a non-existing target is an error.
+   */
+  void ReleaseTarget(model::TargetId target_id);
+
+  /**
+   * Runs the specified query against the local store and returns the results,
+   * potentially taking advantage of target data from previous executions (such
+   * as the set of remote keys).
+   *
+   * @param use_previous_results Whether results from previous executions can be
+   *     used to optimize this query execution.
+   */
+  QueryResult ExecuteQuery(const core::Query& query, bool use_previous_results);
+
+  /**
+   * Notify the local store of the changed views to locally pin / unpin
+   * documents.
+   */
+  void NotifyLocalViewChanges(
+      const std::vector<LocalViewChanges>& view_changes);
+
+  /**
+   * Gets the mutation batch after the passed in batch_id in the mutation queue
+   * or `nullopt` if empty.
+   *
+   * @param batch_id The batch to search after, or `kBatchIdUnknown` for the
+   * first mutation in the queue.
+   * @return the next mutation or `nullopt` if there wasn't one.
+   */
+  absl::optional<model::MutationBatch> GetNextMutationBatch(
+      model::BatchId batch_id);
+
+  /**
+   * Returns the largest (latest) batch id in mutation queue that is pending
+   * server response. Returns `kBatchIdUnknown` if the queue is empty.
+   */
+  model::BatchId GetHighestUnacknowledgedBatchId();
+
+  LruResults CollectGarbage(LruGarbageCollector* garbage_collector);
+
+  /**
+   * Returns whether the given bundle has already been loaded and its create
+   * time is newer or equal to the currently loading bundle.
+   */
+  bool HasNewerBundle(const bundle::BundleMetadata& metadata);
+
+  /** Saves the given `BundleMetadata` to local persistence. */
+  void SaveBundle(const bundle::BundleMetadata& metadata) override;
+
+  /**
+   * Applies the documents from a bundle to the "ground-state" (remote)
+   * documents.
+   *
+   * Local documents are re-calculated if there are remaining mutations in the
+   * queue.
+   */
+  model::DocumentMap ApplyBundledDocuments(
+      const model::MutableDocumentMap& documents,
+      const std::string& bundle_id) override;
+
+  /** Saves the given `NamedQuery` to local persistence. */
+  void SaveNamedQuery(const bundle::NamedQuery& query,
+                      const model::DocumentKeySet& keys) override;
+
+  /**
+   * Returns the NameQuery associated with query_name or `nullopt` if not found.
+   */
+  absl::optional<bundle::NamedQuery> GetNamedQuery(
+      const std::string& query_name);
+
+ private:
+  friend class LocalStoreTest;  // for `GetTargetData()`
+
+  void StartMutationQueue();
+  void ApplyBatchResult(const model::MutationBatchResult& batch_result);
+
+  /**
+   * Returns true if the new_target_data should be persisted during an update of
+   * an active target. TargetData should always be persisted when a target is
+   * being released and should not call this function.
+   *
+   * While the target is active, TargetData updates can be omitted when nothing
+   * about the target has changed except metadata like the resume token or
+   * snapshot version. Occasionally it's worth the extra write to prevent these
+   * values from getting too stale after a crash, but this doesn't have to be
+   * too frequent.
+   */
+  bool ShouldPersistTargetData(const TargetData& new_target_data,
+                               const TargetData& old_target_data,
+                               const remote::TargetChange& change) const;
+
+  /**
+   * Returns the TargetData as seen by the LocalStore, including updates that
+   * may have not yet been persisted to the TargetCache.
+   */
+  absl::optional<TargetData> GetTargetData(const core::Target& target);
+
+  /**
+   * Creates a new target using the given bundle name, which will be used to
+   * hold the keys of all documents from the bundle in query-document mappings.
+   * This ensures that the loaded documents do not get garbage collected right
+   * away.
+   */
+  static core::Target NewUmbrellaTarget(const std::string& bundle_id);
+
+  /**
+   * Populates the remote document cache with documents from backend or a
+   * bundle. Returns the document changes resulting from applying those
+   * documents.
+   *
+   * Note: this function will use `document_versions` if it is defined. When it
+   * is not defined, it resorts to `global_version`.
+   *
+   * @param documents Documents to be applied.
+   * @param document_versions A DocumentKey-to-SnapshotVersion map if documents
+   * have their own read time.
+   * @param global_version A SnapshotVersion representing the read time if all
+   * documents have the same read time.
+   */
+  model::MutableDocumentMap PopulateDocumentChanges(
+      const model::DocumentUpdateMap& documents,
+      const model::DocumentVersionMap& document_versions,
+      const model::SnapshotVersion& global_version);
+
+  /** Manages our in-memory or durable persistence. Owned by FirestoreClient. */
+  Persistence* persistence_ = nullptr;
+
+  /** Used to generate target IDs for queries tracked locally. */
+  core::TargetIdGenerator target_id_generator_;
+
+  /**
+   * The set of all mutations that have been sent but not yet been applied to
+   * the backend.
+   */
+  MutationQueue* mutation_queue_ = nullptr;
+
+  /** The set of all cached remote documents. */
+  RemoteDocumentCache* remote_document_cache_ = nullptr;
+
+  /** Maps a query to the data about that query. */
+  TargetCache* target_cache_ = nullptr;
+
+  /** Holds information about the bundles loaded into the SDK. */
+  BundleCache* bundle_cache_ = nullptr;
+
+  /**
+   * Performs queries over the localDocuments (and potentially maintains
+   * indexes).
+   */
+  QueryEngine* query_engine_ = nullptr;
+
+  /**
+   * The "local" view of all documents (layering mutation queue on top of
+   * remote_document_cache_).
+   */
+  std::unique_ptr<LocalDocumentsView> local_documents_;
+
+  /** The set of document references maintained by any local views. */
+  ReferenceSet local_view_references_;
+
+  /** Maps target ids to data about their queries. */
+  std::unordered_map<model::TargetId, TargetData> target_data_by_target_;
+
+  /** Maps a target to its targetID. */
+  std::unordered_map<core::Target, model::TargetId> target_id_by_target_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LOCAL_STORE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.cc
new file mode 100644
index 0000000..39051b4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.cc	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/local_view_changes.h"
+
+#include "Firestore/core/src/core/view_snapshot.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::DocumentViewChange;
+using core::ViewSnapshot;
+using model::DocumentKeySet;
+using model::TargetId;
+
+LocalViewChanges LocalViewChanges::FromViewSnapshot(
+    const core::ViewSnapshot& snapshot, model::TargetId target_id) {
+  DocumentKeySet added_keys;
+  DocumentKeySet removed_keys;
+
+  for (const DocumentViewChange& doc_change : snapshot.document_changes()) {
+    switch (doc_change.type()) {
+      case DocumentViewChange::Type::Added:
+        added_keys = added_keys.insert(doc_change.document()->key());
+        break;
+
+      case DocumentViewChange::Type::Removed:
+        removed_keys = removed_keys.insert(doc_change.document()->key());
+        break;
+
+      default:
+        // Do nothing.
+        break;
+    }
+  }
+
+  return LocalViewChanges(target_id, snapshot.from_cache(),
+                          std::move(added_keys), std::move(removed_keys));
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.h
new file mode 100644
index 0000000..73d1b89
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_view_changes.h	
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LOCAL_VIEW_CHANGES_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LOCAL_VIEW_CHANGES_H_
+
+#include <utility>
+
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * Represents changes applying to the local view of a given query, including
+ * what documents are currently in view and out of view.
+ *
+ * Example usage: these changes are sent to the LocalStore by the View (via the
+ * SyncEngine) and are used to pin / unpin documents as appropriate.
+ */
+class LocalViewChanges {
+ public:
+  static LocalViewChanges FromViewSnapshot(const core::ViewSnapshot& snapshot,
+                                           model::TargetId target_id);
+
+  LocalViewChanges(model::TargetId target_id,
+                   bool from_cache,
+                   model::DocumentKeySet added_keys,
+                   model::DocumentKeySet removed_keys)
+      : target_id_(target_id),
+        from_cache_(from_cache),
+        added_keys_(std::move(added_keys)),
+        removed_keys_(std::move(removed_keys)) {
+  }
+
+  /** The batch ID of the local write. */
+  model::TargetId target_id() const {
+    return target_id_;
+  }
+
+  bool is_from_cache() const {
+    return from_cache_;
+  }
+
+  /** The document changes resulting from the local write. */
+  const model::DocumentKeySet& added_keys() const {
+    return added_keys_;
+  }
+
+  const model::DocumentKeySet& removed_keys() const {
+    return removed_keys_;
+  }
+
+ private:
+  model::TargetId target_id_ = 0;
+  bool from_cache_ = false;
+  model::DocumentKeySet added_keys_;
+  model::DocumentKeySet removed_keys_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LOCAL_VIEW_CHANGES_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_write_result.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_write_result.h
new file mode 100644
index 0000000..0adf510
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/local_write_result.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LOCAL_WRITE_RESULT_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LOCAL_WRITE_RESULT_H_
+
+#include <utility>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/** The result of a write to the local store. */
+class LocalWriteResult {
+ public:
+  LocalWriteResult(model::BatchId batch_id, model::DocumentMap&& changes)
+      : batch_id_(batch_id), changes_(std::move(changes)) {
+  }
+
+  LocalWriteResult() = default;
+
+  /** The batch ID of the local write. */
+  model::BatchId batch_id() const {
+    return batch_id_;
+  }
+
+  /** The document changes resulting from the local write. */
+  const model::DocumentMap& changes() const {
+    return changes_;
+  }
+
+ private:
+  model::BatchId batch_id_;
+  model::DocumentMap changes_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LOCAL_WRITE_RESULT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.cc
new file mode 100644
index 0000000..03f191f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.cc	
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <queue>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/api/settings.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using api::Settings;
+using model::DocumentKey;
+using model::ListenSequenceNumber;
+using model::TargetId;
+using util::StatusOr;
+
+using Millis = std::chrono::milliseconds;
+
+static Millis::rep MillisecondsBetween(const Timestamp& start,
+                                       const Timestamp& end) {
+  return std::chrono::duration_cast<Millis>(end.ToTimePoint() -
+                                            start.ToTimePoint())
+      .count();
+}
+
+/**
+ * RollingSequenceNumberBuffer tracks the nth sequence number in a series.
+ * Sequence numbers may be added out of order.
+ */
+class RollingSequenceNumberBuffer {
+ public:
+  explicit RollingSequenceNumberBuffer(size_t max_elements)
+      : queue_(std::priority_queue<ListenSequenceNumber>()),
+        max_elements_(max_elements) {
+  }
+
+  RollingSequenceNumberBuffer(const RollingSequenceNumberBuffer& other) =
+      delete;
+
+  void AddElement(ListenSequenceNumber sequence_number) {
+    if (queue_.size() < max_elements_) {
+      queue_.push(sequence_number);
+    } else {
+      ListenSequenceNumber highest_value = queue_.top();
+      if (sequence_number < highest_value) {
+        queue_.pop();
+        queue_.push(sequence_number);
+      }
+    }
+  }
+
+  ListenSequenceNumber max_value() const {
+    return queue_.top();
+  }
+
+  size_t size() const {
+    return queue_.size();
+  }
+
+ private:
+  std::priority_queue<ListenSequenceNumber> queue_;
+  const size_t max_elements_;
+};
+
+}  // namespace
+
+const ListenSequenceNumber kListenSequenceNumberInvalid = -1;
+
+LruParams LruParams::Default() {
+  return LruParams{100 * 1024 * 1024, 10, 1000};
+}
+
+LruParams LruParams::Disabled() {
+  return LruParams{api::Settings::CacheSizeUnlimited, 0, 0};
+}
+
+LruParams LruParams::WithCacheSize(int64_t cache_size) {
+  LruParams params = Default();
+  params.min_bytes_threshold = cache_size;
+  return params;
+}
+
+LruGarbageCollector::LruGarbageCollector(LruDelegate* delegate,
+                                         LruParams params)
+    : delegate_(delegate), params_(std::move(params)) {
+}
+
+StatusOr<int64_t> LruGarbageCollector::CalculateByteSize() const {
+  return delegate_->CalculateByteSize();
+}
+
+LruResults LruGarbageCollector::Collect(const LiveQueryMap& live_targets) {
+  if (params_.min_bytes_threshold == Settings::CacheSizeUnlimited) {
+    LOG_DEBUG("Garbage collection skipped; disabled");
+    return LruResults::DidNotRun();
+  }
+
+  StatusOr<int64_t> maybe_current_size = CalculateByteSize();
+  if (!maybe_current_size.ok()) {
+    LOG_ERROR(
+        "Garbage collection skipped; failed to estimate the size of the "
+        "cache: %s",
+        maybe_current_size.status().ToString());
+    return LruResults::DidNotRun();
+  }
+
+  int64_t current_size = maybe_current_size.ValueOrDie();
+  if (current_size < params_.min_bytes_threshold) {
+    // Not enough on disk to warrant collection. Wait another timeout cycle.
+    LOG_DEBUG(
+        "Garbage collection skipped; Cache size %s is lower than threshold %s",
+        current_size, params_.min_bytes_threshold);
+    return LruResults::DidNotRun();
+  }
+
+  LOG_DEBUG("Running garbage collection on cache of size: %s", current_size);
+  return RunGarbageCollection(live_targets);
+}
+
+LruResults LruGarbageCollector::RunGarbageCollection(
+    const LiveQueryMap& live_targets) {
+  Timestamp start = Timestamp::Now();
+
+  // Cap at the configured max
+  int sequence_numbers = QueryCountForPercentile(params_.percentile_to_collect);
+  if (sequence_numbers > params_.maximum_sequence_numbers_to_collect) {
+    sequence_numbers = params_.maximum_sequence_numbers_to_collect;
+  }
+  Timestamp counted_targets = Timestamp::Now();
+
+  ListenSequenceNumber upper_bound =
+      SequenceNumberForQueryCount(sequence_numbers);
+  Timestamp found_upper_bound = Timestamp::Now();
+
+  int num_targets_removed = RemoveTargets(upper_bound, live_targets);
+  Timestamp removed_targets = Timestamp::Now();
+
+  int num_documents_removed = RemoveOrphanedDocuments(upper_bound);
+  Timestamp removed_documents = Timestamp::Now();
+
+  std::string desc = "LRU Garbage Collection:\n";
+  absl::StrAppend(&desc, "\tCounted targets in ",
+                  MillisecondsBetween(start, counted_targets), "ms\n");
+  absl::StrAppend(&desc, "\tDetermined least recently used ", sequence_numbers,
+                  " sequence numbers in ",
+                  MillisecondsBetween(counted_targets, found_upper_bound),
+                  "ms\n");
+  absl::StrAppend(&desc, "\tRemoved ", num_targets_removed, " targets in ",
+                  MillisecondsBetween(found_upper_bound, removed_targets),
+                  "ms\n");
+  absl::StrAppend(&desc, "\tRemoved ", num_documents_removed, " documents in ",
+                  MillisecondsBetween(removed_targets, removed_documents),
+                  "ms\n");
+  absl::StrAppend(&desc, "Total duration: ",
+                  MillisecondsBetween(start, removed_documents), "ms");
+  LOG_DEBUG(desc.c_str());
+
+  return LruResults{/* did_run= */ true, sequence_numbers, num_targets_removed,
+                    num_documents_removed};
+}
+
+int LruGarbageCollector::QueryCountForPercentile(int percentile) {
+  size_t total_count = delegate_->GetSequenceNumberCount();
+  return static_cast<int>((percentile / 100.0f) * total_count);
+}
+
+ListenSequenceNumber LruGarbageCollector::SequenceNumberForQueryCount(
+    int query_count) {
+  if (query_count == 0) {
+    return kListenSequenceNumberInvalid;
+  }
+
+  RollingSequenceNumberBuffer buffer(query_count);
+
+  delegate_->EnumerateTargetSequenceNumbers(
+      [&buffer](ListenSequenceNumber sequence_number) {
+        buffer.AddElement(sequence_number);
+      });
+
+  delegate_->EnumerateOrphanedDocuments(
+      [&buffer](const DocumentKey&, ListenSequenceNumber sequence_number) {
+        buffer.AddElement(sequence_number);
+      });
+
+  return buffer.max_value();
+}
+
+int LruGarbageCollector::RemoveTargets(ListenSequenceNumber sequence_number,
+                                       const LiveQueryMap& live_queries) {
+  return delegate_->RemoveTargets(sequence_number, live_queries);
+}
+
+int LruGarbageCollector::RemoveOrphanedDocuments(
+    ListenSequenceNumber sequence_number) {
+  return delegate_->RemoveOrphanedDocuments(sequence_number);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.h
new file mode 100644
index 0000000..0809c14
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/lru_garbage_collector.h	
@@ -0,0 +1,163 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_LRU_GARBAGE_COLLECTOR_H_
+#define FIRESTORE_CORE_SRC_LOCAL_LRU_GARBAGE_COLLECTOR_H_
+
+#include <unordered_map>
+
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/target_cache.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class LruGarbageCollector;
+class TargetData;
+
+ABSL_CONST_INIT extern const model::ListenSequenceNumber
+    kListenSequenceNumberInvalid;
+
+struct LruParams {
+  static LruParams Default();
+
+  static LruParams Disabled();
+
+  static LruParams WithCacheSize(int64_t cache_size);
+
+  int64_t min_bytes_threshold;
+  int percentile_to_collect;
+  int maximum_sequence_numbers_to_collect;
+};
+
+struct LruResults {
+  static LruResults DidNotRun() {
+    return LruResults{/* did_run= */ false, 0, 0, 0};
+  }
+
+  bool did_run;
+  int sequence_numbers_collected;
+  int targets_removed;
+  int documents_removed;
+};
+
+using LiveQueryMap = std::unordered_map<model::TargetId, TargetData>;
+
+/**
+ * Persistence layers intending to use LRU Garbage collection should implement
+ * this interface. This interface defines the operations that the LRU garbage
+ * collector needs from the persistence layer.
+ */
+class LruDelegate : public ReferenceDelegate {
+ public:
+  virtual ~LruDelegate() = default;
+
+  /** Access to the underlying LRU Garbage collector instance. */
+  virtual LruGarbageCollector* garbage_collector() = 0;
+
+  virtual util::StatusOr<int64_t> CalculateByteSize() = 0;
+
+  /** Returns the number of targets and orphaned documents cached. */
+  virtual size_t GetSequenceNumberCount() = 0;
+
+  /**
+   * Enumerates the sequence numbers of all the targets that the delegate is
+   * aware of. This is typically all sequence numbers in an TargetCache.
+   */
+  virtual void EnumerateTargetSequenceNumbers(
+      const SequenceNumberCallback& callback) = 0;
+
+  /**
+   * Enumerates all of the outstanding mutations.
+   */
+  virtual void EnumerateOrphanedDocuments(
+      const OrphanedDocumentCallback& callback) = 0;
+
+  /**
+   * Removes all unreferenced documents from the cache that have a sequence
+   * number less than or equal to the given sequence number. Returns the number
+   * of documents removed.
+   */
+  virtual int RemoveOrphanedDocuments(
+      model::ListenSequenceNumber sequence_number) = 0;
+
+  /**
+   * Removes all targets that are not currently being listened to and have a
+   * sequence number less than or equal to the given sequence number. Returns
+   * the number of targets removed.
+   */
+  virtual int RemoveTargets(model::ListenSequenceNumber sequence_number,
+                            const LiveQueryMap& live_queries) = 0;
+};
+
+/**
+ * LruGarbageCollector defines the LRU algorithm used to clean up old documents
+ * and targets. It is persistence-agnostic, as long as proper delegate is
+ * provided.
+ */
+class LruGarbageCollector {
+ public:
+  LruGarbageCollector(LruDelegate* delegate, LruParams params);
+
+  util::StatusOr<int64_t> CalculateByteSize() const;
+
+  /**
+   * Given a target percentile, return the number of queries that make up that
+   * percentage of the queries that are cached. For instance, if 20 queries are
+   * cached, and the percentile is 40, the result will be 8.
+   */
+  int QueryCountForPercentile(int percentile);
+
+  /**
+   * Given a number of queries n, return the nth sequence number in the cache.
+   */
+  model::ListenSequenceNumber SequenceNumberForQueryCount(int query_count);
+
+  /**
+   * Removes queries that are not currently live (as indicated by presence in
+   * the live_queries map) and have a sequence number less than or equal to the
+   * given sequence number.
+   */
+  int RemoveTargets(model::ListenSequenceNumber sequence_number,
+                    const LiveQueryMap& live_queries);
+
+  /**
+   * Removes all unreferenced documents from the cache that have a sequence
+   * number less than or equal to the given sequence number. Returns the number
+   * of documents removed.
+   */
+  int RemoveOrphanedDocuments(model::ListenSequenceNumber sequence_number);
+
+  local::LruResults Collect(const LiveQueryMap& live_targets);
+
+ private:
+  LruResults RunGarbageCollection(const LiveQueryMap& live_targets);
+
+  // Delegate owns the LruGarbageCollector; this is a back pointer.
+  LruDelegate* delegate_;
+
+  LruParams params_ = LruParams::Default();
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_LRU_GARBAGE_COLLECTOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.cc
new file mode 100644
index 0000000..6637afb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.cc	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_bundle_cache.h"
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using bundle::BundleMetadata;
+using bundle::NamedQuery;
+
+absl::optional<BundleMetadata> MemoryBundleCache::GetBundleMetadata(
+    const std::string& bundle_id) const {
+  auto got = bundles_.find(bundle_id);
+  if (got == bundles_.end()) {
+    return absl::nullopt;
+  }
+  return absl::make_optional(got->second);
+}
+
+void MemoryBundleCache::SaveBundleMetadata(const BundleMetadata& metadata) {
+  bundles_[metadata.bundle_id()] = metadata;
+}
+
+absl::optional<NamedQuery> MemoryBundleCache::GetNamedQuery(
+    const std::string& query_name) const {
+  auto got = named_queries_.find(query_name);
+  if (got == named_queries_.end()) {
+    return absl::nullopt;
+  }
+  return absl::make_optional(got->second);
+}
+
+void MemoryBundleCache::SaveNamedQuery(const NamedQuery& query) {
+  named_queries_[query.query_name()] = query;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.h
new file mode 100644
index 0000000..2d9e999
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_bundle_cache.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_BUNDLE_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_BUNDLE_CACHE_H_
+
+#include <string>
+#include <unordered_map>
+
+#include "Firestore/core/src/bundle/bundle_metadata.h"
+#include "Firestore/core/src/bundle/named_query.h"
+#include "Firestore/core/src/local/bundle_cache.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class MemoryBundleCache : public BundleCache {
+ public:
+  absl::optional<bundle::BundleMetadata> GetBundleMetadata(
+      const std::string& bundle_id) const override;
+
+  void SaveBundleMetadata(const bundle::BundleMetadata& metadata) override;
+
+  absl::optional<bundle::NamedQuery> GetNamedQuery(
+      const std::string& query_name) const override;
+
+  void SaveNamedQuery(const bundle::NamedQuery& query) override;
+
+ private:
+  std::unordered_map<std::string, bundle::BundleMetadata> bundles_;
+  std::unordered_map<std::string, bundle::NamedQuery> named_queries_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_BUNDLE_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.cc
new file mode 100644
index 0000000..6134689
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.cc	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_eager_reference_delegate.h"
+
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/memory_mutation_queue.h"
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/local/target_data.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::DocumentKey;
+using model::ListenSequenceNumber;
+
+MemoryEagerReferenceDelegate::MemoryEagerReferenceDelegate(
+    MemoryPersistence* persistence)
+    : persistence_(persistence) {
+}
+
+ListenSequenceNumber MemoryEagerReferenceDelegate::current_sequence_number()
+    const {
+  return kListenSequenceNumberInvalid;
+}
+
+void MemoryEagerReferenceDelegate::AddInMemoryPins(ReferenceSet* set) {
+  // We should be able to assert that additional_references_ is nullptr, but due
+  // to restarts in spec tests it would fail.
+  additional_references_ = set;
+}
+
+void MemoryEagerReferenceDelegate::RemoveTarget(const TargetData& target_data) {
+  for (const DocumentKey& doc_key :
+       persistence_->target_cache()->GetMatchingKeys(target_data.target_id())) {
+    orphaned_->insert(doc_key);
+  }
+  persistence_->target_cache()->RemoveTarget(target_data);
+}
+
+void MemoryEagerReferenceDelegate::AddReference(const DocumentKey& key) {
+  orphaned_->erase(key);
+}
+
+void MemoryEagerReferenceDelegate::RemoveReference(const DocumentKey& key) {
+  orphaned_->insert(key);
+}
+
+void MemoryEagerReferenceDelegate::RemoveMutationReference(
+    const DocumentKey& key) {
+  orphaned_->insert(key);
+}
+
+bool MemoryEagerReferenceDelegate::IsReferenced(const DocumentKey& key) const {
+  if (persistence_->target_cache()->Contains(key)) {
+    return true;
+  }
+  if (MutationQueuesContainKey(key)) {
+    return true;
+  }
+  if (additional_references_ && additional_references_->ContainsKey(key)) {
+    return true;
+  }
+  return false;
+}
+
+void MemoryEagerReferenceDelegate::UpdateLimboDocument(const DocumentKey& key) {
+  if (IsReferenced(key)) {
+    orphaned_->erase(key);
+  } else {
+    orphaned_->insert(key);
+  }
+}
+
+void MemoryEagerReferenceDelegate::OnTransactionStarted(absl::string_view) {
+  // Constructs the unordered map, in place, with no arguments.
+  orphaned_.emplace();
+}
+
+void MemoryEagerReferenceDelegate::OnTransactionCommitted() {
+  for (const auto& key : *orphaned_) {
+    if (!IsReferenced(key)) {
+      persistence_->remote_document_cache()->Remove(key);
+    }
+  }
+  orphaned_.reset();
+}
+
+bool MemoryEagerReferenceDelegate::MutationQueuesContainKey(
+    const DocumentKey& key) const {
+  const auto& queues = persistence_->mutation_queues();
+  for (const auto& entry : queues) {
+    if (entry.second->ContainsKey(key)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.h
new file mode 100644
index 0000000..105ada3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_eager_reference_delegate.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_EAGER_REFERENCE_DELEGATE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_EAGER_REFERENCE_DELEGATE_H_
+
+#include <memory>
+#include <unordered_set>
+
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class MemoryPersistence;
+
+/**
+ * Provides the eager GC implementation for memory persistence.
+ */
+class MemoryEagerReferenceDelegate : public ReferenceDelegate {
+ public:
+  explicit MemoryEagerReferenceDelegate(MemoryPersistence* persistence);
+
+  model::ListenSequenceNumber current_sequence_number() const override;
+
+  void AddInMemoryPins(ReferenceSet* set) override;
+
+  void AddReference(const model::DocumentKey& key) override;
+  void RemoveReference(const model::DocumentKey& key) override;
+  void RemoveMutationReference(const model::DocumentKey& key) override;
+  void RemoveTarget(const TargetData& target_data) override;
+
+  void UpdateLimboDocument(const model::DocumentKey& key) override;
+
+  void OnTransactionStarted(absl::string_view label) override;
+  void OnTransactionCommitted() override;
+
+ private:
+  bool IsReferenced(const model::DocumentKey& key) const;
+
+  bool MutationQueuesContainKey(const model::DocumentKey& key) const;
+
+  absl::optional<std::unordered_set<model::DocumentKey, model::DocumentKeyHash>>
+      orphaned_;
+
+  // This instance is owned by MemoryPersistence.
+  MemoryPersistence* persistence_ = nullptr;
+
+  // The ReferenceSet is owned by LocalStore.
+  ReferenceSet* additional_references_ = nullptr;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_EAGER_REFERENCE_DELEGATE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.cc
new file mode 100644
index 0000000..d8ec923
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.cc	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_index_manager.h"
+
+#include <algorithm>
+#include <set>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::ResourcePath;
+
+bool MemoryCollectionParentIndex::Add(const ResourcePath& collection_path) {
+  HARD_ASSERT(collection_path.size() % 2 == 1, "Expected a collection path.");
+
+  std::string collection_id = collection_path.last_segment();
+  ResourcePath parent_path = collection_path.PopLast();
+  std::set<ResourcePath>& existing_parents = index_[collection_id];
+  bool inserted = existing_parents.insert(parent_path).second;
+  return inserted;
+}
+
+std::vector<ResourcePath> MemoryCollectionParentIndex::GetEntries(
+    const std::string& collection_id) const {
+  std::vector<ResourcePath> result;
+  auto found = index_.find(collection_id);
+  if (found != index_.end()) {
+    const std::set<ResourcePath>& parent_paths = found->second;
+    std::copy(parent_paths.begin(), parent_paths.end(),
+              std::back_inserter(result));
+  }
+  return result;
+}
+
+void MemoryIndexManager::AddToCollectionParentIndex(
+    const ResourcePath& collection_path) {
+  collection_parents_index_.Add(collection_path);
+}
+
+std::vector<ResourcePath> MemoryIndexManager::GetCollectionParents(
+    const std::string& collection_id) {
+  return collection_parents_index_.GetEntries(collection_id);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.h
new file mode 100644
index 0000000..f3f7bef
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_index_manager.h	
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_INDEX_MANAGER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_INDEX_MANAGER_H_
+
+#include <set>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/local/index_manager.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * Internal implementation of the collection-parent index. Also used for
+ * in-memory caching by LevelDbIndexManager and initial index population during
+ * schema migration.
+ */
+class MemoryCollectionParentIndex {
+ public:
+  // Returns false if the entry already existed.
+  bool Add(const model::ResourcePath& collection_path);
+
+  std::vector<model::ResourcePath> GetEntries(
+      const std::string& collection_id) const;
+
+ private:
+  std::unordered_map<std::string, std::set<model::ResourcePath>> index_;
+};
+
+/** An in-memory implementation of IndexManager. */
+class MemoryIndexManager : public IndexManager {
+ public:
+  void AddToCollectionParentIndex(
+      const model::ResourcePath& collection_path) override;
+
+  std::vector<model::ResourcePath> GetCollectionParents(
+      const std::string& collection_id) override;
+
+ private:
+  MemoryCollectionParentIndex collection_parents_index_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_INDEX_MANAGER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.cc
new file mode 100644
index 0000000..f39d44c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.cc	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_lru_reference_delegate.h"
+
+#include <vector>
+
+#include "Firestore/core/src/local/listen_sequence.h"
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/memory_mutation_queue.h"
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/memory_remote_document_cache.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::DocumentKey;
+using model::ListenSequenceNumber;
+using util::StatusOr;
+
+MemoryLruReferenceDelegate::MemoryLruReferenceDelegate(
+    MemoryPersistence* persistence,
+    LruParams lru_params,
+    std::unique_ptr<Sizer> sizer)
+    : persistence_(persistence),
+      sizer_(std::move(sizer)),
+      gc_(this, lru_params) {
+  // Theoretically this is always 0, since this is all in-memory...
+  ListenSequenceNumber highest_sequence_number =
+      persistence_->target_cache()->highest_listen_sequence_number();
+  listen_sequence_ = absl::make_unique<ListenSequence>(highest_sequence_number);
+}
+
+LruGarbageCollector* MemoryLruReferenceDelegate::garbage_collector() {
+  return &gc_;
+}
+
+ListenSequenceNumber MemoryLruReferenceDelegate::current_sequence_number()
+    const {
+  HARD_ASSERT(current_sequence_number_ != kListenSequenceNumberInvalid,
+              "Asking for a sequence number outside of a transaction");
+  return current_sequence_number_;
+}
+
+void MemoryLruReferenceDelegate::AddInMemoryPins(ReferenceSet* set) {
+  // We should be able to assert that additional_references_ is nullptr, but due
+  // to restarts in spec tests it would fail.
+  additional_references_ = set;
+}
+
+void MemoryLruReferenceDelegate::RemoveTarget(const TargetData& target_data) {
+  TargetData updated = target_data.WithSequenceNumber(current_sequence_number_);
+  persistence_->target_cache()->UpdateTarget(updated);
+}
+
+void MemoryLruReferenceDelegate::UpdateLimboDocument(
+    const model::DocumentKey& key) {
+  sequence_numbers_[key] = current_sequence_number_;
+}
+
+void MemoryLruReferenceDelegate::OnTransactionStarted(absl::string_view) {
+  current_sequence_number_ = listen_sequence_->Next();
+}
+
+void MemoryLruReferenceDelegate::OnTransactionCommitted() {
+  current_sequence_number_ = kListenSequenceNumberInvalid;
+}
+
+void MemoryLruReferenceDelegate::EnumerateTargetSequenceNumbers(
+    const SequenceNumberCallback& callback) {
+  return persistence_->target_cache()->EnumerateSequenceNumbers(callback);
+}
+
+void MemoryLruReferenceDelegate::EnumerateOrphanedDocuments(
+    const OrphanedDocumentCallback& callback) {
+  for (const auto& entry : sequence_numbers_) {
+    const DocumentKey& key = entry.first;
+    ListenSequenceNumber sequence_number = entry.second;
+    // Pass in the exact sequence number as the upper bound so we know it won't
+    // be pinned by being too recent.
+    if (!IsPinnedAtSequenceNumber(sequence_number, key)) {
+      callback(key, sequence_number);
+    }
+  }
+}
+
+size_t MemoryLruReferenceDelegate::GetSequenceNumberCount() {
+  size_t total_count = persistence_->target_cache()->size();
+  EnumerateOrphanedDocuments(
+      [&total_count](const DocumentKey&, ListenSequenceNumber) {
+        total_count++;
+      });
+  return total_count;
+}
+
+int MemoryLruReferenceDelegate::RemoveTargets(
+    model::ListenSequenceNumber sequence_number,
+    const LiveQueryMap& live_queries) {
+  return static_cast<int>(persistence_->target_cache()->RemoveTargets(
+      sequence_number, live_queries));
+}
+
+int MemoryLruReferenceDelegate::RemoveOrphanedDocuments(
+    model::ListenSequenceNumber upper_bound) {
+  std::vector<DocumentKey> removed =
+      persistence_->remote_document_cache()->RemoveOrphanedDocuments(
+          this, upper_bound);
+  for (const auto& key : removed) {
+    sequence_numbers_.erase(key);
+  }
+  return static_cast<int>(removed.size());
+}
+
+void MemoryLruReferenceDelegate::AddReference(const DocumentKey& key) {
+  sequence_numbers_[key] = current_sequence_number_;
+}
+
+void MemoryLruReferenceDelegate::RemoveReference(const DocumentKey& key) {
+  sequence_numbers_[key] = current_sequence_number_;
+}
+
+bool MemoryLruReferenceDelegate::MutationQueuesContainKey(
+    const DocumentKey& key) const {
+  const auto& queues = persistence_->mutation_queues();
+  for (const auto& entry : queues) {
+    if (entry.second->ContainsKey(key)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void MemoryLruReferenceDelegate::RemoveMutationReference(
+    const DocumentKey& key) {
+  sequence_numbers_[key] = current_sequence_number_;
+}
+
+bool MemoryLruReferenceDelegate::IsPinnedAtSequenceNumber(
+    ListenSequenceNumber upper_bound, const DocumentKey& key) const {
+  if (MutationQueuesContainKey(key)) {
+    return true;
+  }
+  if (additional_references_ && additional_references_->ContainsKey(key)) {
+    return true;
+  }
+  if (persistence_->target_cache()->Contains(key)) {
+    return true;
+  }
+
+  auto it = sequence_numbers_.find(key);
+  if (it != sequence_numbers_.end() && it->second > upper_bound) {
+    return true;
+  }
+  return false;
+}
+
+StatusOr<int64_t> MemoryLruReferenceDelegate::CalculateByteSize() {
+  // Note that this method is only used for testing because this delegate is
+  // only used for testing. The algorithm here (loop through everything,
+  // serialize it and count bytes) is inefficient and inexact, but won't run in
+  // production.
+  int64_t count = 0;
+  count += persistence_->target_cache()->CalculateByteSize(*sizer_);
+  count += persistence_->remote_document_cache()->CalculateByteSize(*sizer_);
+  const auto& queues = persistence_->mutation_queues();
+  for (const auto& entry : queues) {
+    count += entry.second->CalculateByteSize(*sizer_);
+  }
+  return count;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.h
new file mode 100644
index 0000000..04b96be
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_lru_reference_delegate.h	
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_LRU_REFERENCE_DELEGATE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_LRU_REFERENCE_DELEGATE_H_
+
+#include <memory>
+#include <unordered_map>
+#include <utility>
+
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/model/document_key.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class ListenSequence;
+class MemoryPersistence;
+class Sizer;
+
+/**
+ * Provides the LRU GC implementation for memory persistence.
+ */
+class MemoryLruReferenceDelegate : public LruDelegate {
+ public:
+  MemoryLruReferenceDelegate(MemoryPersistence* persistence,
+                             LruParams lru_params,
+                             std::unique_ptr<Sizer> sizer);
+
+  bool IsPinnedAtSequenceNumber(model::ListenSequenceNumber upper_bound,
+                                const model::DocumentKey& key) const;
+
+  // MARK: ReferenceDelegate overrides
+
+  model::ListenSequenceNumber current_sequence_number() const override;
+
+  void AddInMemoryPins(ReferenceSet* set) override;
+
+  void AddReference(const model::DocumentKey& key) override;
+  void RemoveReference(const model::DocumentKey& key) override;
+  void RemoveMutationReference(const model::DocumentKey& key) override;
+  void RemoveTarget(const TargetData& target_data) override;
+
+  void UpdateLimboDocument(const model::DocumentKey& key) override;
+
+  void OnTransactionStarted(absl::string_view label) override;
+  void OnTransactionCommitted() override;
+
+  // MARK: LruDelegate overrides
+
+  LruGarbageCollector* garbage_collector() override;
+
+  util::StatusOr<int64_t> CalculateByteSize() override;
+  size_t GetSequenceNumberCount() override;
+
+  void EnumerateTargetSequenceNumbers(
+      const SequenceNumberCallback& callback) override;
+  void EnumerateOrphanedDocuments(
+      const OrphanedDocumentCallback& callback) override;
+
+  int RemoveOrphanedDocuments(model::ListenSequenceNumber upper_bound) override;
+  int RemoveTargets(model::ListenSequenceNumber sequence_number,
+                    const LiveQueryMap& live_queries) override;
+
+ private:
+  bool MutationQueuesContainKey(const model::DocumentKey& key) const;
+
+  // This instance is owned by MemoryPersistence.
+  MemoryPersistence* persistence_ = nullptr;
+
+  std::unique_ptr<Sizer> sizer_;
+
+  LruGarbageCollector gc_;
+
+  // Tracks sequence numbers of when documents are used. Equivalent to sentinel
+  // rows in the leveldb implementation.
+  std::unordered_map<model::DocumentKey,
+                     model::ListenSequenceNumber,
+                     model::DocumentKeyHash>
+      sequence_numbers_;
+
+  // This ReferenceSet is owned by LocalStore.
+  ReferenceSet* additional_references_ = nullptr;
+
+  // This needs to be a pointer because initialization is delayed until after
+  // we read from the target cache.
+  std::unique_ptr<ListenSequence> listen_sequence_;
+
+  // The current sequence number for the currently active transaction. If no
+  // transaction is active, resets back to kListenSequenceNumberInvalid.
+  model::ListenSequenceNumber current_sequence_number_ =
+      kListenSequenceNumberInvalid;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_LRU_REFERENCE_DELEGATE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.cc
new file mode 100644
index 0000000..165a435
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.cc	
@@ -0,0 +1,304 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_mutation_queue.h"
+
+#include <utility>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/document_key_reference.h"
+#include "Firestore/core/src/local/index_manager.h"
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::Query;
+using model::BatchId;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::kBatchIdUnknown;
+using model::Mutation;
+using model::MutationBatch;
+using model::ResourcePath;
+using nanopb::ByteString;
+
+MemoryMutationQueue::MemoryMutationQueue(MemoryPersistence* persistence)
+    : persistence_(persistence) {
+}
+
+bool MemoryMutationQueue::IsEmpty() {
+  // If the queue has any entries at all, the first entry must not be a
+  // tombstone (otherwise it would have been removed already).
+  return queue_.empty();
+}
+
+void MemoryMutationQueue::AcknowledgeBatch(const MutationBatch& batch,
+                                           const ByteString& stream_token) {
+  HARD_ASSERT(!queue_.empty(), "Cannot acknowledge batch on an empty queue");
+
+  // Guaranteed to exist, due to above assert
+  const MutationBatch& check = queue_.front();
+  // Verify that the batch in the queue is the one to be acknowledged.
+  HARD_ASSERT(batch.batch_id() == check.batch_id(),
+              "Queue ordering failure: expected batch %s, got batch %s",
+              batch.batch_id(), check.batch_id());
+  last_stream_token_ = stream_token;
+}
+
+void MemoryMutationQueue::Start() {
+  // Note: The queue may be shutdown / started multiple times, since we maintain
+  // the queue for the duration of the app session in case a user logs out /
+  // back in. To behave like the LevelDB-backed MutationQueue (and accommodate
+  // tests that expect as much), we reset next_batch_id_ if the queue is empty.
+  if (IsEmpty()) {
+    next_batch_id_ = 1;
+  }
+}
+
+MutationBatch MemoryMutationQueue::AddMutationBatch(
+    const Timestamp& local_write_time,
+    std::vector<Mutation>&& base_mutations,
+    std::vector<Mutation>&& mutations) {
+  HARD_ASSERT(!mutations.empty(), "Mutation batches should not be empty");
+
+  BatchId batch_id = next_batch_id_;
+  next_batch_id_++;
+
+  if (!queue_.empty()) {
+    const MutationBatch& prior = queue_.back();
+    HARD_ASSERT(prior.batch_id() < batch_id,
+                "Mutation batch_ids must be in monotonically increasing order");
+  }
+
+  MutationBatch batch(batch_id, local_write_time, std::move(base_mutations),
+                      std::move(mutations));
+  queue_.push_back(batch);
+
+  // Track references by document key and index collection parents.
+  for (const Mutation& mutation : batch.mutations()) {
+    batches_by_document_key_ = batches_by_document_key_.insert(
+        DocumentKeyReference{mutation.key(), batch_id});
+
+    persistence_->index_manager()->AddToCollectionParentIndex(
+        mutation.key().path().PopLast());
+  }
+
+  return batch;
+}
+
+void MemoryMutationQueue::RemoveMutationBatch(const MutationBatch& batch) {
+  // Can only remove the first batch
+  HARD_ASSERT(!queue_.empty(), "Trying to remove batch from empty queue");
+  const MutationBatch& head = queue_.front();
+  HARD_ASSERT(head.batch_id() == batch.batch_id(),
+              "Can only remove the first entry of the mutation queue");
+
+  queue_.erase(queue_.begin());
+
+  // Remove entries from the index too.
+  for (const Mutation& mutation : batch.mutations()) {
+    const DocumentKey& key = mutation.key();
+    persistence_->reference_delegate()->RemoveMutationReference(key);
+
+    DocumentKeyReference reference{key, batch.batch_id()};
+    batches_by_document_key_ = batches_by_document_key_.erase(reference);
+  }
+}
+
+std::vector<MutationBatch>
+MemoryMutationQueue::AllMutationBatchesAffectingDocumentKeys(
+    const DocumentKeySet& document_keys) {
+  // First find the set of affected batch IDs.
+  std::set<BatchId> batch_ids;
+  for (const DocumentKey& key : document_keys) {
+    DocumentKeyReference start{key, 0};
+
+    for (const auto& reference : batches_by_document_key_.values_from(start)) {
+      if (key != reference.key()) break;
+
+      batch_ids.insert(reference.ref_id());
+    }
+  }
+
+  return AllMutationBatchesWithIds(batch_ids);
+}
+
+std::vector<MutationBatch>
+MemoryMutationQueue::AllMutationBatchesAffectingDocumentKey(
+    const DocumentKey& key) {
+  std::vector<MutationBatch> result;
+
+  DocumentKeyReference start{key, 0};
+  for (const auto& reference : batches_by_document_key_.values_from(start)) {
+    if (key != reference.key()) break;
+
+    auto batch = LookupMutationBatch(reference.ref_id());
+    HARD_ASSERT(batch.has_value(),
+                "Batches in the index must exist in the main table");
+    result.push_back(*batch);
+  }
+  return result;
+}
+
+std::vector<MutationBatch>
+MemoryMutationQueue::AllMutationBatchesAffectingQuery(const Query& query) {
+  HARD_ASSERT(
+      !query.IsCollectionGroupQuery(),
+      "CollectionGroup queries should be handled in LocalDocumentsView");
+
+  // Use the query path as a prefix for testing if a document matches the query.
+  const ResourcePath& prefix = query.path();
+  size_t immediate_children_path_length = prefix.size() + 1;
+
+  // Construct a document reference for actually scanning the index. Unlike the
+  // prefix, the document key in this reference must have an even number of
+  // segments. The empty segment can be used as a suffix of the query path
+  // because it precedes all other segments in an ordered traversal.
+  ResourcePath start_path = query.path();
+  if (!DocumentKey::IsDocumentKey(start_path)) {
+    start_path = start_path.Append("");
+  }
+  DocumentKeyReference start{DocumentKey{start_path}, 0};
+
+  // Find unique batch_ids referenced by all documents potentially matching the
+  // query.
+  std::set<BatchId> unique_batch_ids;
+  for (const auto& reference : batches_by_document_key_.values_from(start)) {
+    const ResourcePath& row_key_path = reference.key().path();
+    if (!prefix.IsPrefixOf(row_key_path)) {
+      break;
+    }
+
+    // Rows with document keys more than one segment longer than the query path
+    // can't be matches. For example, a query on 'rooms' can't match the
+    // document /rooms/abc/messages/xyx.
+    // TODO(mcg): we'll need a different scanner when we implement ancestor
+    // queries.
+    if (row_key_path.size() != immediate_children_path_length) {
+      continue;
+    }
+
+    unique_batch_ids.insert(reference.ref_id());
+  }
+
+  return AllMutationBatchesWithIds(unique_batch_ids);
+}
+
+absl::optional<MutationBatch>
+MemoryMutationQueue::NextMutationBatchAfterBatchId(BatchId batch_id) {
+  BatchId next_batch_id = batch_id + 1;
+
+  // The requested batch_id may still be out of range so normalize it to the
+  // start of the queue.
+  int raw_index = IndexOfBatchId(next_batch_id);
+  size_t index = raw_index < 0 ? 0 : static_cast<size_t>(raw_index);
+  if (queue_.size() <= index) {
+    return absl::nullopt;
+  }
+
+  return queue_[index];
+}
+
+BatchId MemoryMutationQueue::GetHighestUnacknowledgedBatchId() {
+  return IsEmpty() ? kBatchIdUnknown : next_batch_id_ - 1;
+}
+
+absl::optional<MutationBatch> MemoryMutationQueue::LookupMutationBatch(
+    BatchId batch_id) {
+  if (queue_.empty()) {
+    return absl::nullopt;
+  }
+
+  int index = IndexOfBatchId(batch_id);
+  if (index < 0 || static_cast<size_t>(index) >= queue_.size()) {
+    return absl::nullopt;
+  }
+
+  const MutationBatch& batch = queue_[index];
+  HARD_ASSERT(batch.batch_id() == batch_id, "If found, batch must match");
+  return batch;
+}
+
+void MemoryMutationQueue::PerformConsistencyCheck() {
+  if (queue_.empty()) {
+    HARD_ASSERT(batches_by_document_key_.empty(),
+                "Document leak -- detected dangling mutation references when "
+                "queue is empty.");
+  }
+}
+
+bool MemoryMutationQueue::ContainsKey(const model::DocumentKey& key) {
+  // Create a reference with a zero ID as the start position to find any
+  // document reference with this key.
+  DocumentKeyReference reference{key, 0};
+  auto range = batches_by_document_key_.values_from(reference);
+  auto begin = range.begin();
+  return begin != range.end() && begin->key() == key;
+}
+
+int64_t MemoryMutationQueue::CalculateByteSize(const Sizer& sizer) {
+  int64_t count = 0;
+  for (const auto& batch : queue_) {
+    count += sizer.CalculateByteSize(batch);
+  }
+  return count;
+}
+
+ByteString MemoryMutationQueue::GetLastStreamToken() {
+  return last_stream_token_;
+}
+
+void MemoryMutationQueue::SetLastStreamToken(ByteString token) {
+  last_stream_token_ = std::move(token);
+}
+
+std::vector<MutationBatch> MemoryMutationQueue::AllMutationBatchesWithIds(
+    const std::set<BatchId>& batch_ids) {
+  std::vector<MutationBatch> result;
+  for (BatchId batch_id : batch_ids) {
+    auto batch = LookupMutationBatch(batch_id);
+    if (batch.has_value()) {
+      result.push_back(*batch);
+    }
+  }
+
+  return result;
+}
+
+int MemoryMutationQueue::IndexOfBatchId(BatchId batch_id) {
+  if (queue_.empty()) {
+    // As an index this is past the end of the queue
+    return 0;
+  }
+
+  // Examine the front of the queue to figure out the difference between the
+  // batch_id and indexes in the array. Note that since the queue is ordered by
+  // batch_id, if the first batch has a larger batch_id then the requested
+  // batch_id doesn't exist in the queue.
+  const MutationBatch& first_batch = queue_.front();
+  return batch_id - first_batch.batch_id();
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.h
new file mode 100644
index 0000000..1b3f84b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_mutation_queue.h	
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_MUTATION_QUEUE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_MUTATION_QUEUE_H_
+
+#include <set>
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/local/document_key_reference.h"
+#include "Firestore/core/src/local/mutation_queue.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class MemoryPersistence;
+class Sizer;
+
+class MemoryMutationQueue : public MutationQueue {
+ public:
+  explicit MemoryMutationQueue(MemoryPersistence* persistence);
+
+  void Start() override;
+
+  bool IsEmpty() override;
+
+  void AcknowledgeBatch(const model::MutationBatch& batch,
+                        const nanopb::ByteString& stream_token) override;
+
+  model::MutationBatch AddMutationBatch(
+      const Timestamp& local_write_time,
+      std::vector<model::Mutation>&& base_mutations,
+      std::vector<model::Mutation>&& mutations) override;
+
+  void RemoveMutationBatch(const model::MutationBatch& batch) override;
+
+  std::vector<model::MutationBatch> AllMutationBatches() override {
+    return queue_;
+  }
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingDocumentKeys(
+      const model::DocumentKeySet& document_keys) override;
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingDocumentKey(
+      const model::DocumentKey& key) override;
+
+  std::vector<model::MutationBatch> AllMutationBatchesAffectingQuery(
+      const core::Query& query) override;
+
+  absl::optional<model::MutationBatch> LookupMutationBatch(
+      model::BatchId batch_id) override;
+
+  absl::optional<model::MutationBatch> NextMutationBatchAfterBatchId(
+      model::BatchId batch_id) override;
+
+  model::BatchId GetHighestUnacknowledgedBatchId() override;
+
+  void PerformConsistencyCheck() override;
+
+  bool ContainsKey(const model::DocumentKey& key);
+
+  int64_t CalculateByteSize(const Sizer& sizer);
+
+  nanopb::ByteString GetLastStreamToken() override;
+  void SetLastStreamToken(nanopb::ByteString token) override;
+
+ private:
+  using DocumentKeyReferenceSet =
+      immutable::SortedSet<DocumentKeyReference, DocumentKeyReference::ByKey>;
+
+  std::vector<model::MutationBatch> AllMutationBatchesWithIds(
+      const std::set<model::BatchId>& batch_ids);
+
+  /**
+   * Finds the index of the given batch_id in the mutation queue. This operation
+   * is O(1).
+   *
+   * @return The computed index of the batch with the given BatchID, based on
+   * the state of the queue. Note this index can negative if the requested
+   * BatchID has already been removed from the queue or past the end of the
+   * queue if the BatchID is larger than the last added batch.
+   */
+  int IndexOfBatchId(model::BatchId batch_id);
+
+  // This instance is owned by MemoryPersistence.
+  MemoryPersistence* persistence_;
+
+  /**
+   * A FIFO queue of all mutations to apply to the backend. Mutations are added
+   * to the end of the queue as they're written, and removed from the front of
+   * the queue as the mutations become visible or are rejected.
+   *
+   * When successfully applied, mutations must be acknowledged by the write
+   * stream and made visible on the watch stream. It's possible for the watch
+   * stream to fall behind in which case the batches at the head of the queue
+   * will be acknowledged but held until the watch stream sees the changes.
+   *
+   * If a batch is rejected while there are held write acknowledgements at the
+   * head of the queue the rejected batch is converted to a tombstone: its
+   * mutations are removed but the batch remains in the queue. This maintains a
+   * simple consecutive ordering of batches in the queue.
+   *
+   * Once the held write acknowledgements become visible they are removed from
+   * the head of the queue along with any tombstones that follow.
+   */
+  std::vector<model::MutationBatch> queue_;
+
+  /**
+   * The next value to use when assigning sequential IDs to each mutation
+   * batch.
+   */
+  model::BatchId next_batch_id_ = 1;
+
+  /**
+   * The last received stream token from the server, used to acknowledge which
+   * responses the client has processed. Stream tokens are opaque checkpoint
+   * markers whose only real value is their inclusion in the next request.
+   */
+  nanopb::ByteString last_stream_token_;
+
+  /** An ordered mapping between documents and the mutation batch IDs. */
+  DocumentKeyReferenceSet batches_by_document_key_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_MUTATION_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.cc
new file mode 100644
index 0000000..2dd20c9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.cc	
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_persistence.h"
+
+#include "Firestore/core/src/auth/user.h"
+#include "Firestore/core/src/local/listen_sequence.h"
+#include "Firestore/core/src/local/lru_garbage_collector.h"
+#include "Firestore/core/src/local/memory_eager_reference_delegate.h"
+#include "Firestore/core/src/local/memory_index_manager.h"
+#include "Firestore/core/src/local/memory_lru_reference_delegate.h"
+#include "Firestore/core/src/local/memory_mutation_queue.h"
+#include "Firestore/core/src/local/memory_remote_document_cache.h"
+#include "Firestore/core/src/local/memory_target_cache.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using auth::User;
+using model::ListenSequenceNumber;
+
+std::unique_ptr<MemoryPersistence>
+MemoryPersistence::WithEagerGarbageCollector() {
+  std::unique_ptr<MemoryPersistence> persistence(new MemoryPersistence());
+  auto delegate =
+      absl::make_unique<MemoryEagerReferenceDelegate>(persistence.get());
+  persistence->set_reference_delegate(std::move(delegate));
+  return persistence;
+}
+
+std::unique_ptr<MemoryPersistence> MemoryPersistence::WithLruGarbageCollector(
+    LruParams lru_params, std::unique_ptr<Sizer> sizer) {
+  std::unique_ptr<MemoryPersistence> persistence(new MemoryPersistence());
+  auto delegate = absl::make_unique<MemoryLruReferenceDelegate>(
+      persistence.get(), lru_params, std::move(sizer));
+  persistence->set_reference_delegate(std::move(delegate));
+  return persistence;
+}
+
+MemoryPersistence::MemoryPersistence()
+    : target_cache_(this), remote_document_cache_(this), started_(true) {
+}
+
+MemoryPersistence::~MemoryPersistence() = default;
+
+ListenSequenceNumber MemoryPersistence::current_sequence_number() const {
+  return reference_delegate_->current_sequence_number();
+}
+
+void MemoryPersistence::set_reference_delegate(
+    std::unique_ptr<ReferenceDelegate> delegate) {
+  reference_delegate_ = std::move(delegate);
+}
+
+void MemoryPersistence::Shutdown() {
+  // No durable state to ensure is closed on shutdown.
+  HARD_ASSERT(started_, "MemoryPersistence shutdown without start!");
+  started_ = false;
+}
+
+MemoryMutationQueue* MemoryPersistence::GetMutationQueueForUser(
+    const User& user) {
+  auto iter = mutation_queues_.find(user);
+  if (iter == mutation_queues_.end()) {
+    auto queue = absl::make_unique<MemoryMutationQueue>(this);
+    MemoryMutationQueue* result = queue.get();
+
+    mutation_queues_.emplace(user, std::move(queue));
+    return result;
+  } else {
+    return iter->second.get();
+  }
+}
+
+MemoryTargetCache* MemoryPersistence::target_cache() {
+  return &target_cache_;
+}
+
+MemoryBundleCache* MemoryPersistence::bundle_cache() {
+  return &bundle_cache_;
+}
+
+MemoryRemoteDocumentCache* MemoryPersistence::remote_document_cache() {
+  return &remote_document_cache_;
+}
+
+MemoryIndexManager* MemoryPersistence::index_manager() {
+  return &index_manager_;
+}
+
+ReferenceDelegate* MemoryPersistence::reference_delegate() {
+  return reference_delegate_.get();
+}
+
+void MemoryPersistence::RunInternal(absl::string_view label,
+                                    std::function<void()> block) {
+  TransactionGuard guard(reference_delegate_.get(), label);
+
+  block();
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.h
new file mode 100644
index 0000000..c3d8a72
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_persistence.h	
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_PERSISTENCE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_PERSISTENCE_H_
+
+#include <memory>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/auth/user.h"
+#include "Firestore/core/src/local/memory_bundle_cache.h"
+#include "Firestore/core/src/local/memory_index_manager.h"
+#include "Firestore/core/src/local/memory_mutation_queue.h"
+#include "Firestore/core/src/local/memory_remote_document_cache.h"
+#include "Firestore/core/src/local/memory_target_cache.h"
+#include "Firestore/core/src/local/persistence.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+struct LruParams;
+class MemoryIndexManager;
+class MemoryMutationQueue;
+class MemoryRemoteDocumentCache;
+class MemoryTargetCache;
+class MutationQueue;
+class TargetCache;
+class ReferenceDelegate;
+class RemoteDocumentCache;
+class Sizer;
+
+/**
+ * An in-memory implementation of the Persistence interface. Values are stored
+ * only in RAM and are never persisted to any durable storage.
+ */
+class MemoryPersistence : public Persistence {
+ public:
+  using MutationQueues =
+      std::unordered_map<auth::User,
+                         std::unique_ptr<MemoryMutationQueue>,
+                         auth::HashUser>;
+
+  static std::unique_ptr<MemoryPersistence> WithEagerGarbageCollector();
+
+  static std::unique_ptr<MemoryPersistence> WithLruGarbageCollector(
+      LruParams params, std::unique_ptr<Sizer> sizer);
+
+  ~MemoryPersistence() override;
+
+  const MutationQueues& mutation_queues() const {
+    return mutation_queues_;
+  }
+
+  // MARK: Persistence overrides
+
+  model::ListenSequenceNumber current_sequence_number() const override;
+
+  void Shutdown() override;
+
+  MemoryMutationQueue* GetMutationQueueForUser(const auth::User& user) override;
+
+  MemoryTargetCache* target_cache() override;
+
+  MemoryBundleCache* bundle_cache() override;
+
+  MemoryRemoteDocumentCache* remote_document_cache() override;
+
+  MemoryIndexManager* index_manager() override;
+
+  ReferenceDelegate* reference_delegate() override;
+
+ protected:
+  void RunInternal(absl::string_view label,
+                   std::function<void()> block) override;
+
+ private:
+  MemoryPersistence();
+
+  void set_reference_delegate(std::unique_ptr<ReferenceDelegate> delegate);
+
+  MutationQueues mutation_queues_;
+
+  /**
+   * The TargetCache representing the persisted cache of queries.
+   *
+   * Note that this is retained here to make it easier to write tests affecting
+   * both the in-memory and LevelDB-backed persistence layers. Tests can create
+   * a new LocalStore wrapping this Persistence instance and this will make
+   * the in-memory persistence layer behave as if it were actually persisting
+   * values.
+   */
+  MemoryTargetCache target_cache_;
+
+  /**
+   * The RemoteDocumentCache representing the persisted cache of remote
+   * documents.
+   */
+  MemoryRemoteDocumentCache remote_document_cache_;
+
+  MemoryIndexManager index_manager_;
+
+  MemoryBundleCache bundle_cache_;
+
+  std::unique_ptr<ReferenceDelegate> reference_delegate_;
+
+  bool started_ = false;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_PERSISTENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.cc
new file mode 100644
index 0000000..2df5d47
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.cc	
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_remote_document_cache.h"
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/memory_lru_reference_delegate.h"
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::Query;
+using model::Document;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::ListenSequenceNumber;
+using model::MutableDocument;
+using model::MutableDocumentMap;
+using model::SnapshotVersion;
+
+MemoryRemoteDocumentCache::MemoryRemoteDocumentCache(
+    MemoryPersistence* persistence) {
+  persistence_ = persistence;
+}
+
+void MemoryRemoteDocumentCache::Add(const MutableDocument& document,
+                                    const model::SnapshotVersion& read_time) {
+  // Note: We create an explicit copy to prevent further modifications.
+  docs_ = docs_.insert(document.key(), std::make_pair(document, read_time));
+
+  persistence_->index_manager()->AddToCollectionParentIndex(
+      document.key().path().PopLast());
+}
+
+void MemoryRemoteDocumentCache::Remove(const DocumentKey& key) {
+  docs_ = docs_.erase(key);
+}
+
+MutableDocument MemoryRemoteDocumentCache::Get(const DocumentKey& key) {
+  const auto& entry = docs_.get(key);
+  // Note: We create an explicit copy to prevent modifications of the backing
+  // data.
+  return entry ? entry->first.Clone() : MutableDocument::InvalidDocument(key);
+}
+
+MutableDocumentMap MemoryRemoteDocumentCache::GetAll(
+    const DocumentKeySet& keys) {
+  MutableDocumentMap results;
+  for (const DocumentKey& key : keys) {
+    // Make sure each key has a corresponding entry, which is nullopt in case
+    // the document is not found.
+    // TODO(http://b/32275378): Don't conflate missing / deleted.
+    results = results.insert(key, Get(key));
+  }
+  return results;
+}
+
+MutableDocumentMap MemoryRemoteDocumentCache::GetMatching(
+    const Query& query, const SnapshotVersion& since_read_time) {
+  HARD_ASSERT(
+      !query.IsCollectionGroupQuery(),
+      "CollectionGroup queries should be handled in LocalDocumentsView");
+
+  MutableDocumentMap results;
+
+  // Documents are ordered by key, so we can use a prefix scan to narrow down
+  // the documents we need to match the query against.
+  DocumentKey prefix{query.path().Append("")};
+  for (auto it = docs_.lower_bound(prefix); it != docs_.end(); ++it) {
+    const DocumentKey& key = it->first;
+    if (!query.path().IsPrefixOf(key.path())) {
+      break;
+    }
+    const MutableDocument& document = it->second.first;
+    if (!document.is_found_document()) {
+      continue;
+    }
+
+    const SnapshotVersion& read_time = it->second.second;
+    if (read_time <= since_read_time) {
+      continue;
+    }
+
+    if (!query.Matches(document)) {
+      continue;
+    }
+
+    // Note: We create an explicit copy to prevent modifications or the backing
+    // data.
+    results = results.insert(key, document.Clone());
+  }
+  return results;
+}
+
+std::vector<DocumentKey> MemoryRemoteDocumentCache::RemoveOrphanedDocuments(
+    MemoryLruReferenceDelegate* reference_delegate,
+    ListenSequenceNumber upper_bound) {
+  std::vector<DocumentKey> removed;
+  auto updated_docs = docs_;
+  for (const auto& kv : docs_) {
+    const DocumentKey& key = kv.first;
+    if (!reference_delegate->IsPinnedAtSequenceNumber(upper_bound, key)) {
+      updated_docs = updated_docs.erase(key);
+      removed.push_back(key);
+    }
+  }
+  docs_ = updated_docs;
+  return removed;
+}
+
+int64_t MemoryRemoteDocumentCache::CalculateByteSize(const Sizer& sizer) {
+  int64_t count = 0;
+  for (const auto& kv : docs_) {
+    const MutableDocument& document = kv.second.first;
+    count += sizer.CalculateByteSize(document);
+  }
+  return count;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.h
new file mode 100644
index 0000000..15cdb9c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_remote_document_cache.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_REMOTE_DOCUMENT_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_REMOTE_DOCUMENT_CACHE_H_
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/immutable/sorted_map.h"
+#include "Firestore/core/src/local/remote_document_cache.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class MemoryLruReferenceDelegate;
+class MemoryPersistence;
+class Sizer;
+
+class MemoryRemoteDocumentCache : public RemoteDocumentCache {
+ public:
+  explicit MemoryRemoteDocumentCache(MemoryPersistence* persistence);
+
+  void Add(const model::MutableDocument& document,
+           const model::SnapshotVersion& read_time) override;
+  void Remove(const model::DocumentKey& key) override;
+
+  model::MutableDocument Get(const model::DocumentKey& key) override;
+  model::MutableDocumentMap GetAll(const model::DocumentKeySet& keys) override;
+  model::MutableDocumentMap GetMatching(
+      const core::Query& query,
+      const model::SnapshotVersion& since_read_time) override;
+
+  std::vector<model::DocumentKey> RemoveOrphanedDocuments(
+      MemoryLruReferenceDelegate* reference_delegate,
+      model::ListenSequenceNumber upper_bound);
+
+  int64_t CalculateByteSize(const Sizer& sizer);
+
+ private:
+  /** Underlying cache of documents and their read times. */
+  immutable::SortedMap<
+      model::DocumentKey,
+      std::pair<model::MutableDocument, model::SnapshotVersion>>
+      docs_;
+
+  // This instance is owned by MemoryPersistence; avoid a retain cycle.
+  MemoryPersistence* persistence_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_REMOTE_DOCUMENT_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.cc
new file mode 100644
index 0000000..49b1e69
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.cc	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/memory_target_cache.h"
+
+#include <vector>
+
+#include "Firestore/core/src/local/memory_persistence.h"
+#include "Firestore/core/src/local/reference_delegate.h"
+#include "Firestore/core/src/local/sizer.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::Target;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::ListenSequenceNumber;
+using model::SnapshotVersion;
+using model::TargetId;
+
+MemoryTargetCache::MemoryTargetCache(MemoryPersistence* persistence)
+    : persistence_(persistence),
+      highest_listen_sequence_number_(ListenSequenceNumber(0)),
+      highest_target_id_(TargetId(0)),
+      last_remote_snapshot_version_(SnapshotVersion::None()),
+      targets_() {
+}
+
+void MemoryTargetCache::AddTarget(const TargetData& target_data) {
+  targets_[target_data.target()] = target_data;
+  if (target_data.target_id() > highest_target_id_) {
+    highest_target_id_ = target_data.target_id();
+  }
+  if (target_data.sequence_number() > highest_listen_sequence_number_) {
+    highest_listen_sequence_number_ = target_data.sequence_number();
+  }
+}
+
+void MemoryTargetCache::UpdateTarget(const TargetData& target_data) {
+  // For the memory target cache, adds and updates are treated the same.
+  AddTarget(target_data);
+}
+
+void MemoryTargetCache::RemoveTarget(const TargetData& target_data) {
+  targets_.erase(target_data.target());
+  references_.RemoveReferences(target_data.target_id());
+}
+
+absl::optional<TargetData> MemoryTargetCache::GetTarget(const Target& target) {
+  auto iter = targets_.find(target);
+  return iter == targets_.end() ? absl::optional<TargetData>{} : iter->second;
+}
+
+void MemoryTargetCache::EnumerateSequenceNumbers(
+    const SequenceNumberCallback& callback) {
+  for (const auto& kv : targets_) {
+    callback(kv.second.sequence_number());
+  }
+}
+
+size_t MemoryTargetCache::RemoveTargets(
+    model::ListenSequenceNumber upper_bound,
+    const std::unordered_map<TargetId, TargetData>& live_targets) {
+  std::vector<const Target*> to_remove;
+  for (const auto& kv : targets_) {
+    const Target& target = kv.first;
+    const TargetData& target_data = kv.second;
+
+    if (target_data.sequence_number() <= upper_bound) {
+      if (live_targets.find(target_data.target_id()) == live_targets.end()) {
+        to_remove.push_back(&target);
+        references_.RemoveReferences(target_data.target_id());
+      }
+    }
+  }
+
+  for (const Target* element : to_remove) {
+    targets_.erase(*element);
+  }
+  return to_remove.size();
+}
+
+void MemoryTargetCache::AddMatchingKeys(const DocumentKeySet& keys,
+                                        TargetId target_id) {
+  references_.AddReferences(keys, target_id);
+  for (const DocumentKey& key : keys) {
+    persistence_->reference_delegate()->AddReference(key);
+  }
+}
+
+void MemoryTargetCache::RemoveMatchingKeys(const DocumentKeySet& keys,
+                                           TargetId target_id) {
+  references_.RemoveReferences(keys, target_id);
+  for (const DocumentKey& key : keys) {
+    persistence_->reference_delegate()->RemoveReference(key);
+  }
+}
+
+DocumentKeySet MemoryTargetCache::GetMatchingKeys(TargetId target_id) {
+  return references_.ReferencedKeys(target_id);
+}
+
+bool MemoryTargetCache::Contains(const DocumentKey& key) {
+  return references_.ContainsKey(key);
+}
+
+int64_t MemoryTargetCache::CalculateByteSize(const Sizer& sizer) {
+  int64_t count = 0;
+  for (const auto& kv : targets_) {
+    count += sizer.CalculateByteSize(kv.second);
+  }
+  return count;
+}
+
+const SnapshotVersion& MemoryTargetCache::GetLastRemoteSnapshotVersion() const {
+  return last_remote_snapshot_version_;
+}
+
+void MemoryTargetCache::SetLastRemoteSnapshotVersion(SnapshotVersion version) {
+  last_remote_snapshot_version_ = std::move(version);
+}
+
+void MemoryTargetCache::RemoveMatchingKeysForTarget(model::TargetId target_id) {
+  references_.RemoveReferences(target_id);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.h
new file mode 100644
index 0000000..0c33b8a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/memory_target_cache.h	
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MEMORY_TARGET_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MEMORY_TARGET_CACHE_H_
+
+#include <cstdint>
+#include <unordered_map>
+#include <utility>
+
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/local/reference_set.h"
+#include "Firestore/core/src/local/target_cache.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+class MemoryPersistence;
+class Sizer;
+
+class MemoryTargetCache : public TargetCache {
+ public:
+  explicit MemoryTargetCache(MemoryPersistence* persistence);
+
+  // Target-related methods
+  void AddTarget(const TargetData& target_data) override;
+
+  void UpdateTarget(const TargetData& target_data) override;
+
+  void RemoveTarget(const TargetData& target_data) override;
+
+  absl::optional<TargetData> GetTarget(const core::Target& target) override;
+
+  void EnumerateSequenceNumbers(
+      const SequenceNumberCallback& callback) override;
+
+  size_t RemoveTargets(model::ListenSequenceNumber upper_bound,
+                       const std::unordered_map<model::TargetId, TargetData>&
+                           live_targets) override;
+
+  // Key-related methods
+  void AddMatchingKeys(const model::DocumentKeySet& keys,
+                       model::TargetId target_id) override;
+
+  void RemoveMatchingKeys(const model::DocumentKeySet& keys,
+                          model::TargetId target_id) override;
+
+  void RemoveMatchingKeysForTarget(model::TargetId target_id) override;
+
+  model::DocumentKeySet GetMatchingKeys(model::TargetId target_id) override;
+
+  bool Contains(const model::DocumentKey& key) override;
+
+  // Other methods and accessors
+  int64_t CalculateByteSize(const Sizer& sizer);
+
+  size_t size() const override {
+    return targets_.size();
+  }
+
+  model::ListenSequenceNumber highest_listen_sequence_number() const override {
+    return highest_listen_sequence_number_;
+  }
+
+  model::TargetId highest_target_id() const override {
+    return highest_target_id_;
+  }
+
+  const model::SnapshotVersion& GetLastRemoteSnapshotVersion() const override;
+
+  void SetLastRemoteSnapshotVersion(model::SnapshotVersion version) override;
+
+ private:
+  // This instance is owned by MemoryPersistence.
+  MemoryPersistence* persistence_;
+
+  /** The highest sequence number encountered */
+  model::ListenSequenceNumber highest_listen_sequence_number_;
+  /** The highest numbered target ID encountered. */
+  model::TargetId highest_target_id_;
+  /** The last received snapshot version. */
+  model::SnapshotVersion last_remote_snapshot_version_;
+
+  /** Maps a target to the data about that query. */
+  std::unordered_map<core::Target, TargetData> targets_;
+
+  /**
+   * A ordered bidirectional mapping between documents and the remote target
+   * IDs.
+   */
+  ReferenceSet references_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MEMORY_TARGET_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/mutation_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/mutation_queue.h
new file mode 100644
index 0000000..00bcd1b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/mutation_queue.h	
@@ -0,0 +1,177 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_MUTATION_QUEUE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_MUTATION_QUEUE_H_
+
+#include <vector>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+class Timestamp;
+
+namespace firestore {
+
+namespace core {
+class Query;
+}  // namespace core
+
+namespace nanopb {
+class ByteString;
+}  // namespace nanopb
+
+namespace local {
+
+/** A queue of mutations to apply to the remote store. */
+class MutationQueue {
+ public:
+  virtual ~MutationQueue() = default;
+
+  /**
+   * Starts the mutation queue, performing any initial reads that might be
+   * required to establish invariants, etc.
+   */
+  virtual void Start() = 0;
+
+  /** Returns true if this queue contains no mutation batches. */
+  virtual bool IsEmpty() = 0;
+
+  /** Acknowledges the given batch. */
+  virtual void AcknowledgeBatch(const model::MutationBatch& batch,
+                                const nanopb::ByteString& stream_token) = 0;
+
+  /**
+   * Creates a new mutation batch and adds it to this mutation queue.
+   *
+   * @param local_write_time The original write time of this mutation.
+   * @param base_mutations Mutations that are used to populate the base values
+   * when this mutation is applied locally. These mutations are used to locally
+   * overwrite values that are persisted in the remote document cache.
+   * @param mutations The user-provided mutations in this mutation batch.
+   */
+  virtual model::MutationBatch AddMutationBatch(
+      const Timestamp& local_write_time,
+      std::vector<model::Mutation>&& base_mutations,
+      std::vector<model::Mutation>&& mutations) = 0;
+
+  /**
+   * Removes the given mutation batch from the queue. This is useful in two
+   * circumstances:
+   *
+   * + Removing applied mutations from the head of the queue
+   * + Removing rejected mutations from anywhere in the queue
+   */
+  virtual void RemoveMutationBatch(const model::MutationBatch& batch) = 0;
+
+  /** Gets all mutation batches in the mutation queue. */
+  // TODO(mikelehen): PERF: Current consumer only needs mutated keys; if we can
+  // provide that cheaply, we should replace this.
+  virtual std::vector<model::MutationBatch> AllMutationBatches() = 0;
+
+  /**
+   * Finds all mutation batches that could @em possibly affect the given
+   * document keys. Not all mutations in a batch will necessarily affect each
+   * key, so when looping through the batches you'll need to check that the
+   * mutation itself matches the key.
+   *
+   * Note that because of this requirement implementations are free to return
+   * mutation batches that don't contain any of the given document keys at all
+   * if it's convenient.
+   */
+  // TODO(mcg): This should really return an iterator
+  virtual std::vector<model::MutationBatch>
+  AllMutationBatchesAffectingDocumentKeys(
+      const model::DocumentKeySet& document_keys) = 0;
+
+  /**
+   * Finds all mutation batches that could @em possibly affect the given
+   * document key. Not all mutations in a batch will necessarily affect the
+   * document key, so when looping through the batch you'll need to check that
+   * the mutation itself matches the key.
+   *
+   * Note that because of this requirement implementations are free to return
+   * mutation batches that don't contain the document key at all if it's
+   * convenient.
+   */
+  // TODO(mcg): This should really return an iterator
+  virtual std::vector<model::MutationBatch>
+  AllMutationBatchesAffectingDocumentKey(const model::DocumentKey& key) = 0;
+
+  /**
+   * Finds all mutation batches that could affect the results for the given
+   * query. Not all mutations in a batch will necessarily affect the query, so
+   * when looping through the batch you'll need to check that the mutation
+   * itself matches the query.
+   *
+   * Note that because of this requirement implementations are free to return
+   * mutation batches that don't match the query at all if it's convenient.
+   *
+   * NOTE: A PatchMutation does not need to include all fields in the query
+   * filter criteria in order to be a match (but any fields it does contain do
+   * need to match).
+   */
+  // TODO(mikelehen): This should perhaps return an iterator, though I'm not
+  // sure we can avoid loading them all in memory.
+  virtual std::vector<model::MutationBatch> AllMutationBatchesAffectingQuery(
+      const core::Query& query) = 0;
+
+  /** Loads the mutation batch with the given batch_id. */
+  virtual absl::optional<model::MutationBatch> LookupMutationBatch(
+      model::BatchId batch_id) = 0;
+
+  /**
+   * Gets the first unacknowledged mutation batch after the passed in batch_id
+   * in the mutation queue or nil if empty.
+   *
+   * @param batch_id The batch to search after, or kBatchIdUnknown for the first
+   * mutation in the queue.
+   *
+   * @return the next mutation or nil if there wasn't one.
+   */
+  virtual absl::optional<model::MutationBatch> NextMutationBatchAfterBatchId(
+      model::BatchId batch_id) = 0;
+
+  /**
+   * Gets the largest (latest) batch id in mutation queue for the current user
+   * that is pending server response, returns `kBatchIdUnknown` if the queue
+   * is empty.
+   *
+   * @return the largest batch id in the mutation queue that is not
+   * acknowledged.
+   */
+  virtual model::BatchId GetHighestUnacknowledgedBatchId() = 0;
+
+  /**
+   * Performs a consistency check, examining the mutation queue for any leaks,
+   * if possible.
+   */
+  virtual void PerformConsistencyCheck() = 0;
+
+  /** Returns the current stream token for this mutation queue. */
+  virtual nanopb::ByteString GetLastStreamToken() = 0;
+
+  /** Sets the stream token for this mutation queue. */
+  virtual void SetLastStreamToken(nanopb::ByteString stream_token) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_MUTATION_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/persistence.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/persistence.h
new file mode 100644
index 0000000..582785b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/persistence.h	
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_PERSISTENCE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_PERSISTENCE_H_
+
+#include <functional>
+#include <utility>
+
+#include "Firestore/core/src/model/types.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace auth {
+
+class User;
+
+}  // namespace auth
+
+namespace local {
+
+class BundleCache;
+class IndexManager;
+class MutationQueue;
+class ReferenceDelegate;
+class RemoteDocumentCache;
+class TargetCache;
+
+/**
+ * Persistence is the lowest-level shared interface to data storage in
+ * Firestore.
+ *
+ * Persistence creates MutationQueue and RemoteDocumentCache instances backed
+ * by some underlying storage mechanism (which might be in-memory or LevelDB).
+ *
+ * Persistence also exposes an API to run transactions against the backing
+ * store. All read and write operations must be wrapped in a transaction.
+ * Implementations of Persistence only need to guarantee that writes made
+ * against the transaction are not made to durable storage until the transaction
+ * commits. Since memory-only storage components do not alter durable storage,
+ * they are free to ignore the transaction.
+ *
+ * This contract is enough to allow the LocalStore to be written independently
+ * of whether or not the stored state actually is durably persisted. If a user
+ * enables persistent storage, writes are grouped together to avoid inconsistent
+ * state that could cause crashes.
+ *
+ * Concretely, when persistent storage is enabled, the durable versions of
+ * MutationQueue, RemoteDocumentCache, and others (the mutators) will group
+ * their writes in a transaction. Once the local store has completed one logical
+ * operation, it commits the transaction.
+ *
+ * When persistent storage is disabled, the non-durable versions of the mutators
+ * ignore the transaction. This short-cut is allowed because memory-only storage
+ * leaves no state so it cannot be inconsistent.
+ *
+ * This simplifies the implementations of the mutators and allows memory-only
+ * implementations to supplement the durable ones without requiring any special
+ * dual-store implementation of Persistence. The cost is that LocalStore needs
+ * to be slightly careful about the order of its reads and writes in order to
+ * avoid relying on being able to read back uncommitted writes.
+ */
+class Persistence {
+ public:
+  virtual ~Persistence() = default;
+
+  virtual model::ListenSequenceNumber current_sequence_number() const = 0;
+
+  /** Releases any resources held during eager shutdown. */
+  virtual void Shutdown() = 0;
+
+  /**
+   * Returns a MutationQueue representing the persisted mutations for the given
+   * user.
+   *
+   * Note: The implementation is free to return the same instance every time
+   * this is called for a given user. In particular, the memory-backed
+   * implementation does this to emulate the persisted implementation to the
+   * extent possible (e.g. in the case of UID switching from sally=>jack=>sally,
+   * sally's mutation queue will be preserved).
+   */
+  virtual MutationQueue* GetMutationQueueForUser(const auth::User& user) = 0;
+
+  /** Returns a TargetCache representing the persisted cache of queries. */
+  virtual TargetCache* target_cache() = 0;
+
+  /**
+   * Returns a BundleCache representing the persisted cache of loaded bundles.
+   */
+  virtual BundleCache* bundle_cache() = 0;
+
+  /**
+   * Returns a RemoteDocumentCache representing the persisted cache of remote
+   * documents.
+   */
+  virtual RemoteDocumentCache* remote_document_cache() = 0;
+
+  /** Returns an IndexManager that manages our persisted query indexes. */
+  virtual IndexManager* index_manager() = 0;
+
+  /**
+   * This property provides access to hooks around the document reference
+   * lifecycle.
+   */
+  virtual ReferenceDelegate* reference_delegate() = 0;
+
+  /**
+   * Accepts a function and runs it within a transaction. When called, a
+   * transaction will be started before a block is run, and committed after the
+   * block has executed.
+   *
+   * @param label A semi-unique name for the transaction, for logging.
+   * @param block A void-returning function to be executed within the
+   *     transaction.
+   */
+  template <typename F>
+  auto Run(absl::string_view label, F block) ->
+      typename std::enable_if<std::is_same<void, decltype(block())>::value,
+                              void>::type {
+    RunInternal(label, std::forward<F>(block));
+  }
+
+  /**
+   * Accepts a function and runs it within a transaction. When called, a
+   * transaction will be started before a block is run, and committed after the
+   * block has executed.
+   *
+   * @param label A semi-unique name for the transaction, for logging.
+   * @param block A function to be executed within the transaction whose return
+   *     value will be the result of the transaction. The type of the return
+   *     value must be default constructible and copy- or move-assignable.
+   * @return The value returned from the invocation of `block`.
+   */
+  template <typename F>
+  auto Run(absl::string_view label, F block) ->
+      typename std::enable_if<!std::is_same<void, decltype(block())>::value,
+                              decltype(block())>::type {
+    decltype(block()) result;
+
+    RunInternal(label, [&]() mutable { result = block(); });
+
+    return result;
+  }
+
+ private:
+  virtual void RunInternal(absl::string_view label,
+                           std::function<void()> block) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_PERSISTENCE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.cc
new file mode 100644
index 0000000..5550d7a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.cc	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/proto_sizer.h"
+
+#include <utility>
+
+#include "Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::MutableDocument;
+
+ProtoSizer::ProtoSizer(LocalSerializer serializer)
+    : serializer_(std::move(serializer)) {
+}
+
+int64_t ProtoSizer::CalculateByteSize(const MutableDocument& maybe_doc) const {
+  // TODO(varconst): implement a version of `nanopb::Writer` that only
+  // calculates sizes without actually doing the encoding (to the extent
+  // possible). This isn't high priority as long as `ProtoSizer` is only used in
+  // tests.
+  return MakeByteString(serializer_.EncodeMaybeDocument(maybe_doc)).size();
+}
+
+int64_t ProtoSizer::CalculateByteSize(const model::MutationBatch& batch) const {
+  return MakeByteString(serializer_.EncodeMutationBatch(batch)).size();
+}
+
+int64_t ProtoSizer::CalculateByteSize(const TargetData& target_data) const {
+  return MakeByteString(serializer_.EncodeTargetData(target_data)).size();
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.h
new file mode 100644
index 0000000..7b01eee
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/proto_sizer.h	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_PROTO_SIZER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_PROTO_SIZER_H_
+
+#include "Firestore/core/src/local/local_serializer.h"
+#include "Firestore/core/src/local/sizer.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * Estimates the stored size of documents and queries by translating to protos
+ * and using the serialized sizes to estimate.
+ */
+class ProtoSizer : public Sizer {
+ public:
+  explicit ProtoSizer(LocalSerializer serializer);
+
+  int64_t CalculateByteSize(
+      const model::MutableDocument& maybe_doc) const override;
+
+  int64_t CalculateByteSize(
+      const model::MutationBatch& mutation_batch) const override;
+
+  int64_t CalculateByteSize(const TargetData& target_data) const override;
+
+ private:
+  LocalSerializer serializer_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_PROTO_SIZER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.cc
new file mode 100644
index 0000000..a45a298
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.cc	
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/query_engine.h"
+
+#include <utility>
+
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/local/local_documents_view.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/util/log.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using core::LimitType;
+using core::Query;
+using model::Document;
+using model::DocumentKeySet;
+using model::DocumentMap;
+using model::DocumentSet;
+using model::MutableDocument;
+using model::SnapshotVersion;
+
+DocumentMap QueryEngine::GetDocumentsMatchingQuery(
+    const Query& query,
+    const SnapshotVersion& last_limbo_free_snapshot_version,
+    const DocumentKeySet& remote_keys) {
+  HARD_ASSERT(local_documents_view_, "SetLocalDocumentsView() not called");
+
+  // Queries that match all documents don't benefit from using key-based
+  // lookups. It is more efficient to scan all documents in a collection, rather
+  // than to perform individual lookups.
+  if (query.MatchesAllDocuments()) {
+    return ExecuteFullCollectionScan(query);
+  }
+
+  // Queries that have never seen a snapshot without limbo free documents should
+  // also be run as a full collection scan.
+  if (last_limbo_free_snapshot_version == SnapshotVersion::None()) {
+    return ExecuteFullCollectionScan(query);
+  }
+
+  DocumentMap documents = local_documents_view_->GetDocuments(remote_keys);
+  DocumentSet previous_results = ApplyQuery(query, documents);
+
+  if (query.limit_type() != LimitType::None &&
+      NeedsRefill(query.limit_type(), previous_results, remote_keys,
+                  last_limbo_free_snapshot_version)) {
+    return ExecuteFullCollectionScan(query);
+  }
+
+  LOG_DEBUG("Re-using previous result from %s to execute query: %s",
+            last_limbo_free_snapshot_version.ToString(), query.ToString());
+
+  // Retrieve all results for documents that were updated since the last
+  // remote snapshot that did not contain any Limbo documents.
+  DocumentMap updated_results =
+      local_documents_view_->GetDocumentsMatchingQuery(
+          query, last_limbo_free_snapshot_version);
+
+  // We merge `previous_results` into `update_results`, since `update_results`
+  // is already a DocumentMap. If a document is contained in both lists, then
+  // its contents are the same.
+  for (const Document& result : previous_results) {
+    updated_results = updated_results.insert(result->key(), result);
+  }
+
+  return updated_results;
+}
+
+DocumentSet QueryEngine::ApplyQuery(const Query& query,
+                                    const DocumentMap& documents) const {
+  // Sort the documents and re-apply the query filter since previously matching
+  // documents do not necessarily still match the query.
+  DocumentSet query_results(query.Comparator());
+
+  for (const auto& document_entry : documents) {
+    const Document& doc = document_entry.second;
+    if (doc->is_found_document()) {
+      if (query.Matches(doc)) {
+        query_results = query_results.insert(doc);
+      }
+    }
+  }
+  return query_results;
+}
+
+bool QueryEngine::NeedsRefill(
+    LimitType limit_type,
+    const DocumentSet& sorted_previous_results,
+    const DocumentKeySet& remote_keys,
+    const SnapshotVersion& limbo_free_snapshot_version) const {
+  // The query needs to be refilled if a previously matching document no longer
+  // matches.
+  if (remote_keys.size() != sorted_previous_results.size()) {
+    return true;
+  }
+
+  // Limit queries are not eligible for index-free query execution if there is a
+  // potential that an older document from cache now sorts before a document
+  // that was previously part of the limit.
+  // This, however, can only happen if the document at the edge of the limit
+  // goes out of limit. If a document that is not the limit boundary sorts
+  // differently, the boundary of the limit itself did not change and documents
+  // from cache will continue to be "rejected" by this boundary. Therefore, we
+  // can ignore any modifications that don't affect the last document.
+  absl::optional<Document> document_at_limit_edge =
+      (limit_type == LimitType::First)
+          ? sorted_previous_results.GetLastDocument()
+          : sorted_previous_results.GetFirstDocument();
+  if (!document_at_limit_edge) {
+    // We don't need to refill the query if there were already no documents.
+    return false;
+  }
+  return (*document_at_limit_edge)->has_pending_writes() ||
+         (*document_at_limit_edge)->version() > limbo_free_snapshot_version;
+}
+
+DocumentMap QueryEngine::ExecuteFullCollectionScan(const Query& query) {
+  LOG_DEBUG("Using full collection scan to execute query: %s",
+            query.ToString());
+  return local_documents_view_->GetDocumentsMatchingQuery(
+      query, SnapshotVersion::None());
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.h
new file mode 100644
index 0000000..5b23466
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_engine.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_QUERY_ENGINE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_QUERY_ENGINE_H_
+
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class Query;
+enum class LimitType;
+}  // namespace core
+
+namespace local {
+
+class LocalDocumentsView;
+
+/**
+ * A query engine that takes advantage of the target document mapping in the
+ * TargetCache. Query execution is optimizes by only reading the documents that
+ * previously matched a query plus any documents that were edited after the
+ * query was last listened to.
+ *
+ * There are some cases where Index-Free queries are not guaranteed to
+ * produce the same results as full collection scans. In these cases, the
+ * query processing falls back to full scans. These cases are:
+ *
+ * - Limit queries where a document that matched the query previously no
+ *   longer matches the query.
+ * - Limit queries where a document edit may cause the document to sort below
+ *   another document that is in the local cache.
+ * - Queries that have never been CURRENT or free of limbo documents.
+ */
+class QueryEngine {
+ public:
+  virtual ~QueryEngine() = default;
+
+  /**
+   * Sets the document view to query against.
+   *
+   * The caller owns the LocalDocumentView and must ensure that it outlives the
+   * QueryEngine.
+   */
+  virtual void SetLocalDocumentsView(LocalDocumentsView* local_documents) {
+    local_documents_view_ = local_documents;
+  }
+
+  /** Returns all local documents matching the specified query. */
+  model::DocumentMap GetDocumentsMatchingQuery(
+      const core::Query& query,
+      const model::SnapshotVersion& last_limbo_free_snapshot_version,
+      const model::DocumentKeySet& remote_keys);
+
+ private:
+  /** Applies the query filter and sorting to the provided documents. */
+  model::DocumentSet ApplyQuery(const core::Query& query,
+                                const model::DocumentMap& documents) const;
+
+  /**
+   * Determines if a limit query needs to be refilled from cache, making it
+   * ineligible for index-free execution.
+   *
+   * @param limit_type The type of limit query for refill calculation.
+   * @param sorted_previous_results The documents that matched the query when it
+   *     was last synchronized, sorted by the query's comparator.
+   * @param remote_keys The document keys that matched the query at the last
+   *     snapshot.
+   * @param limbo_free_snapshot_version The version of the snapshot when the
+   *     query was last synchronized.
+   */
+  bool NeedsRefill(
+      core::LimitType limit_type,
+      const model::DocumentSet& sorted_previous_results,
+      const model::DocumentKeySet& remote_keys,
+      const model::SnapshotVersion& limbo_free_snapshot_version) const;
+
+  model::DocumentMap ExecuteFullCollectionScan(const core::Query& query);
+
+  LocalDocumentsView* local_documents_view_ = nullptr;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_QUERY_ENGINE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_result.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_result.h
new file mode 100644
index 0000000..bd879f3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/query_result.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_QUERY_RESULT_H_
+#define FIRESTORE_CORE_SRC_LOCAL_QUERY_RESULT_H_
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/** The result of executing a query against the local store. */
+class QueryResult {
+ public:
+  QueryResult() = default;
+
+  /** Creates a new QueryResult with the given values. */
+  QueryResult(model::DocumentMap documents, model::DocumentKeySet remote_keys)
+      : documents_{std::move(documents)}, remote_keys_{std::move(remote_keys)} {
+  }
+
+  const model::DocumentMap& documents() const {
+    return documents_;
+  }
+
+  const model::DocumentKeySet& remote_keys() const {
+    return remote_keys_;
+  }
+
+ private:
+  model::DocumentMap documents_;
+  model::DocumentKeySet remote_keys_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_QUERY_RESULT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_delegate.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_delegate.h
new file mode 100644
index 0000000..3716bf4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_delegate.h	
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_REFERENCE_DELEGATE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_REFERENCE_DELEGATE_H_
+
+#include "Firestore/core/src/model/types.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class DocumentKey;
+
+}  // namespace model
+
+namespace local {
+
+class ReferenceSet;
+class TargetData;
+
+/**
+ * A ReferenceDelegate instance handles all of the hooks into the
+ * document-reference lifecycle. This includes being added to a target, being
+ * removed from a target, being subject to mutation, and being mutated by the
+ * user.
+ *
+ * Different implementations may do different things with each of these events.
+ * Not every implementation needs to do something with every lifecycle hook.
+ *
+ * Implementations that care about sequence numbers are responsible for
+ * generating them and making them available.
+ */
+class ReferenceDelegate {
+ public:
+  virtual ~ReferenceDelegate() = default;
+
+  virtual model::ListenSequenceNumber current_sequence_number() const = 0;
+
+  /**
+   * Registers a ReferenceSet of documents that should be considered
+   * 'referenced' and not eligible for removal during garbage collection.
+   */
+  virtual void AddInMemoryPins(ReferenceSet* set) = 0;
+
+  /**
+   * Notifies the delegate that the given document was added to a target.
+   */
+  virtual void AddReference(const model::DocumentKey& key) = 0;
+
+  /**
+   * Notifies the delegate that the given document was removed from a target.
+   */
+  virtual void RemoveReference(const model::DocumentKey& key) = 0;
+
+  /**
+   * Notifies the delegate that a document is no longer being mutated by the
+   * user.
+   */
+  virtual void RemoveMutationReference(const model::DocumentKey& key) = 0;
+
+  /**
+   * Notifies the delegate that a target was removed.
+   */
+  virtual void RemoveTarget(const local::TargetData& target_data) = 0;
+
+  /**
+   * Notifies the delegate that a limbo document was updated.
+   */
+  virtual void UpdateLimboDocument(const model::DocumentKey& key) = 0;
+
+  /**
+   * Lifecycle hook that notifies the delegate that a transaction has started.
+   */
+  virtual void OnTransactionStarted(absl::string_view label) = 0;
+
+  /**
+   * Lifecycle hook that notifies the delegate that a transaction has committed.
+   */
+  virtual void OnTransactionCommitted() = 0;
+};
+
+/**
+ * Calls `OnTransactionStarted` in its constructor and then ensures that
+ * `OnTransactionCommitted` is called at the close of any block in which it is
+ * declared.
+ */
+struct TransactionGuard {
+  TransactionGuard(ReferenceDelegate* reference_delegate,
+                   absl::string_view label)
+      : reference_delegate_(reference_delegate) {
+    reference_delegate_->OnTransactionStarted(label);
+  }
+
+  ~TransactionGuard() {
+    reference_delegate_->OnTransactionCommitted();
+  }
+
+  TransactionGuard(const TransactionGuard&) = delete;
+  TransactionGuard& operator=(const TransactionGuard&) = delete;
+
+ private:
+  ReferenceDelegate* reference_delegate_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_REFERENCE_DELEGATE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.cc
new file mode 100644
index 0000000..166c1b6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.cc	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/reference_set.h"
+
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/local/document_key_reference.h"
+#include "Firestore/core/src/model/document_key.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+using model::DocumentKey;
+using model::DocumentKeySet;
+
+void ReferenceSet::AddReference(const DocumentKey& key, int id) {
+  DocumentKeyReference reference{key, id};
+  by_key_ = by_key_.insert(reference);
+  by_id_ = by_id_.insert(reference);
+}
+
+void ReferenceSet::AddReferences(const DocumentKeySet& keys, int id) {
+  for (const DocumentKey& key : keys) {
+    AddReference(key, id);
+  }
+}
+
+void ReferenceSet::RemoveReference(const DocumentKey& key, int id) {
+  RemoveReference(DocumentKeyReference{key, id});
+}
+
+void ReferenceSet::RemoveReferences(
+    const firebase::firestore::model::DocumentKeySet& keys, int id) {
+  for (const DocumentKey& key : keys) {
+    RemoveReference(key, id);
+  }
+}
+
+DocumentKeySet ReferenceSet::RemoveReferences(int id) {
+  DocumentKeyReference start{DocumentKey::Empty(), id};
+  DocumentKeyReference end{DocumentKey::Empty(), id + 1};
+
+  DocumentKeySet removed{};
+
+  auto initial = by_id_;
+  for (const auto& reference : initial.values_in(start, end)) {
+    RemoveReference(reference);
+    removed = removed.insert(reference.key());
+  }
+  return removed;
+}
+
+void ReferenceSet::RemoveAllReferences() {
+  auto initial = by_key_;
+  for (const DocumentKeyReference& reference : initial) {
+    RemoveReference(reference);
+  }
+}
+
+void ReferenceSet::RemoveReference(const DocumentKeyReference& reference) {
+  by_key_ = by_key_.erase(reference);
+  by_id_ = by_id_.erase(reference);
+}
+
+DocumentKeySet ReferenceSet::ReferencedKeys(int id) {
+  DocumentKeyReference start{DocumentKey::Empty(), id};
+  DocumentKeyReference end{DocumentKey::Empty(), id + 1};
+
+  DocumentKeySet keys;
+  for (const auto& reference : by_id_.values_in(start, end)) {
+    keys = keys.insert(reference.key());
+  }
+  return keys;
+}
+
+bool ReferenceSet::ContainsKey(const DocumentKey& key) {
+  // Create a reference with a zero ID as the start position to find any
+  // document reference with this key.
+  DocumentKeyReference start{key, 0};
+
+  auto range = by_key_.values_from(start);
+  auto begin = range.begin();
+  return begin != range.end() && begin->key() == key;
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.h
new file mode 100644
index 0000000..8c130db
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/reference_set.h	
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_REFERENCE_SET_H_
+#define FIRESTORE_CORE_SRC_LOCAL_REFERENCE_SET_H_
+
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/local/document_key_reference.h"
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/**
+ * A collection of references to a document from some kind of numbered entity
+ * (either a TargetId or BatchId). As references are added to or removed from
+ * the set corresponding events are emitted to a registered garbage collector.
+ *
+ * Each reference is represented by a DocumentKeyReference object. Each of them
+ * contains enough information to uniquely identify the reference. They are all
+ * stored primarily in a set sorted by key. A document is considered garbage if
+ * there's no references in that set (this can be efficiently checked thanks to
+ * sorting by key).
+ *
+ * ReferenceSet also keeps a secondary set that contains references sorted by
+ * Id. This one is used to efficiently implement removal of all references by
+ * some TargetId.
+ */
+class ReferenceSet {
+ public:
+  /** Returns true if the reference set contains no references. */
+  bool empty() const {
+    return by_key_.empty();
+  }
+
+  size_t size() const {
+    return by_key_.size();
+  }
+
+  /** Adds a reference to the given document key for the given Id. */
+  void AddReference(const model::DocumentKey& key, int id);
+
+  /** Add references to the given document keys for the given Id. */
+  void AddReferences(const model::DocumentKeySet& keys, int id);
+
+  /** Removes a reference to the given document key for the given Id. */
+  void RemoveReference(const model::DocumentKey& key, int id);
+
+  /** Removes references to the given document keys for the given Id. */
+  void RemoveReferences(const model::DocumentKeySet& keys, int id);
+
+  /** Clears all references with a given ID. Calls -removeReferenceToKey: for
+   * each key removed. */
+  model::DocumentKeySet RemoveReferences(int id);
+
+  /** Clears all references for all IDs. */
+  void RemoveAllReferences();
+
+  /** Returns all of the document keys that have had references added for the
+   * given ID. */
+  model::DocumentKeySet ReferencedKeys(int id);
+
+  /**
+   * Checks to see if there are any references to a document with the given key.
+   */
+  bool ContainsKey(const model::DocumentKey& key);
+
+ private:
+  void RemoveReference(const DocumentKeyReference& reference);
+
+  immutable::SortedSet<DocumentKeyReference, DocumentKeyReference::ByKey>
+      by_key_;
+  immutable::SortedSet<DocumentKeyReference, DocumentKeyReference::ById> by_id_;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_REFERENCE_SET_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/remote_document_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/remote_document_cache.h
new file mode 100644
index 0000000..1aa6605
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/remote_document_cache.h	
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_REMOTE_DOCUMENT_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_REMOTE_DOCUMENT_CACHE_H_
+
+#include "Firestore/core/src/model/model_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class Query;
+}  // namespace core
+
+namespace local {
+
+/**
+ * Represents cached documents received from the remote backend.
+ *
+ * The cache is keyed by DocumentKey and entries in the cache are MaybeDocument
+ * instances, meaning we can cache both Document instances (an actual document
+ * with data) as well as DeletedDocument instances (indicating that the document
+ * is known to not exist).
+ */
+class RemoteDocumentCache {
+ public:
+  virtual ~RemoteDocumentCache() = default;
+
+  /**
+   * Adds or replaces an entry in the cache.
+   *
+   * The cache key is extracted from `document.key`. If there is already a cache
+   * entry for the key, it will be replaced.
+   *
+   * @param document A Document or DeletedDocument to put in the cache.
+   * @param read_time The time at which the document was read or committed.
+   */
+  virtual void Add(const model::MutableDocument& document,
+                   const model::SnapshotVersion& read_time) = 0;
+
+  /** Removes the cached entry for the given key (no-op if no entry exists). */
+  virtual void Remove(const model::DocumentKey& key) = 0;
+
+  /**
+   * Looks up an entry in the cache.
+   *
+   * @param key The key of the entry to look up.
+   * @return The cached Document or DeletedDocument entry, or nullopt if we
+   * have nothing cached.
+   */
+  virtual model::MutableDocument Get(const model::DocumentKey& key) = 0;
+
+  /**
+   * Looks up a set of entries in the cache.
+   *
+   * @param keys The keys of the entries to look up.
+   * @return The cached Document or NoDocument entries indexed by key. If an
+   * entry is not cached, the corresponding key will be mapped to a null value.
+   */
+  virtual model::MutableDocumentMap GetAll(
+      const model::DocumentKeySet& keys) = 0;
+
+  /**
+   * Executes a query against the cached Document entries
+   *
+   * Implementations may return extra documents if convenient. The results
+   * should be re-filtered by the consumer before presenting them to the user.
+   *
+   * Cached DeletedDocument entries have no bearing on query results.
+   *
+   * @param query The query to match documents against.
+   * @param since_read_time If not set to SnapshotVersion::None(), return only
+   * documents that have been read since this snapshot version (exclusive).
+   * @return The set of matching documents.
+   */
+  virtual model::MutableDocumentMap GetMatching(
+      const core::Query& query,
+      const model::SnapshotVersion& since_read_time) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_REMOTE_DOCUMENT_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/sizer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/sizer.h
new file mode 100644
index 0000000..68d2729
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/sizer.h	
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_SIZER_H_
+#define FIRESTORE_CORE_SRC_LOCAL_SIZER_H_
+
+#include <cstdint>
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class MutableDocument;
+class MutationBatch;
+
+}  // namespace model
+
+namespace local {
+
+class TargetData;
+
+/**
+ * Estimates the stored size of documents and queries.
+ */
+class Sizer {
+ public:
+  virtual ~Sizer() = default;
+
+  /**
+   * Calculates the size of the given maybe_doc in bytes. Note that even
+   * NoDocuments have an associated size.
+   */
+  virtual int64_t CalculateByteSize(
+      const model::MutableDocument& maybe_doc) const = 0;
+
+  /**
+   * Calculates the size of the given mutation_batch in bytes.
+   */
+  virtual int64_t CalculateByteSize(
+      const model::MutationBatch& batch) const = 0;
+
+  /**
+   * Calculates the size of the given target_data in bytes.
+   */
+  virtual int64_t CalculateByteSize(const TargetData& target_data) const = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_SIZER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_cache.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_cache.h
new file mode 100644
index 0000000..08afe46
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_cache.h	
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_TARGET_CACHE_H_
+#define FIRESTORE_CORE_SRC_LOCAL_TARGET_CACHE_H_
+
+#include <functional>
+#include <unordered_map>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace core {
+class Query;
+class Target;
+}  // namespace core
+
+namespace local {
+class TargetData;
+
+using OrphanedDocumentCallback =
+    std::function<void(const model::DocumentKey&, model::ListenSequenceNumber)>;
+
+using SequenceNumberCallback = std::function<void(model::ListenSequenceNumber)>;
+
+/**
+ * Represents cached targets received from the remote backend. This contains
+ * both a mapping between targets and the documents that matched them according
+ * to the server, but also metadata about the targets.
+ *
+ * The cache is keyed by Target and entries in the cache are TargetData
+ * instances.
+ */
+class TargetCache {
+ public:
+  virtual ~TargetCache() = default;
+
+  // Target-related methods
+
+  /**
+   * Adds an entry in the cache.
+   *
+   * The cache key is extracted from `TargetData.target()`. The key must not
+   * already exist in the cache.
+   *
+   * @param target_data A new TargetData instance to put in the cache.
+   */
+  virtual void AddTarget(const TargetData& target_data) = 0;
+
+  /**
+   * Updates an entry in the cache.
+   *
+   * The cache key is extracted from `TargetData.target()`. The entry must
+   * already exist in the cache, and it will be replaced.
+   *
+   * @param target_data A TargetData instance to replace an existing entry in
+   *     the cache
+   */
+  virtual void UpdateTarget(const TargetData& target_data) = 0;
+
+  /**
+   * Removes the cached entry for the given target data. The entry must already
+   * exist in the cache.
+   */
+  virtual void RemoveTarget(const TargetData& target_data) = 0;
+
+  /**
+   * Looks up a TargetData entry in the cache.
+   *
+   * @param target The target corresponding to the entry to look up.
+   * @return The cached TargetData entry, or nullopt if the cache has no entry
+   * for the target.
+   */
+  virtual absl::optional<TargetData> GetTarget(const core::Target& target) = 0;
+
+  /** Enumerates all sequence numbers in the TargetCache. */
+  virtual void EnumerateSequenceNumbers(
+      const SequenceNumberCallback& callback) = 0;
+
+  /**
+   * Removes all target by sequence number up to (and including) the given
+   * sequence number. Targets in `live_targets` are ignored.
+   *
+   * @param upper_bound The upper bound for last target's sequence number
+   *     (inclusive).
+   * @param live_targets Targets to ignore.
+   * @return The number of targets removed.
+   */
+  virtual size_t RemoveTargets(
+      model::ListenSequenceNumber upper_bound,
+      const std::unordered_map<model::TargetId, TargetData>& live_targets) = 0;
+
+  // Key-related methods
+  virtual void AddMatchingKeys(const model::DocumentKeySet& keys,
+                               model::TargetId target_id) = 0;
+
+  virtual void RemoveMatchingKeys(const model::DocumentKeySet& keys,
+                                  model::TargetId target_id) = 0;
+
+  /** Removes all document keys in the query results of the given target ID. */
+  virtual void RemoveMatchingKeysForTarget(model::TargetId target_id) = 0;
+
+  virtual model::DocumentKeySet GetMatchingKeys(model::TargetId target_id) = 0;
+
+  virtual bool Contains(const model::DocumentKey& key) = 0;
+
+  // Accessors
+
+  /** Returns the number of targets cached. */
+  virtual size_t size() const = 0;
+
+  /**
+   * Returns the highest listen sequence number of any target seen by the cache.
+   */
+  virtual model::ListenSequenceNumber highest_listen_sequence_number()
+      const = 0;
+
+  /**
+   * Returns the highest target ID of any target in the cache. Typically called
+   * during startup to seed a target ID generator and avoid collisions with
+   * existing queries. If there are no targets in the cache, returns zero.
+   */
+  virtual model::TargetId highest_target_id() const = 0;
+
+  /**
+   * A global snapshot version representing the last consistent snapshot we
+   * received from the backend. This is monotonically increasing and any
+   * snapshots received from the backend prior to this version (e.g. for targets
+   * resumed with a resume_token) should be suppressed (buffered) until the
+   * backend has caught up to this snapshot version again. This prevents our
+   * cache from ever going backwards in time.
+   *
+   * This is updated whenever our we get a TargetChange with a read_time and
+   * empty target_ids.
+   */
+  virtual const model::SnapshotVersion& GetLastRemoteSnapshotVersion()
+      const = 0;
+
+  /**
+   * Set the snapshot version representing the last consistent snapshot received
+   * from the backend. (see `GetLastRemoteSnapshotVersion()` for more details).
+   *
+   * @param version The new snapshot version.
+   */
+  virtual void SetLastRemoteSnapshotVersion(model::SnapshotVersion version) = 0;
+};
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_TARGET_CACHE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.cc
new file mode 100644
index 0000000..e5759d8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.cc	
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/local/target_data.h"
+
+#include <ostream>
+#include <sstream>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace local {
+namespace {
+
+using core::Target;
+using model::ListenSequenceNumber;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::ByteString;
+
+// MARK: - QueryPurpose
+
+const char* ToString(QueryPurpose purpose) {
+  switch (purpose) {
+    case QueryPurpose::Listen:
+      return "Listen";
+    case QueryPurpose::ExistenceFilterMismatch:
+      return "ExistenceFilterMismatch";
+    case QueryPurpose::LimboResolution:
+      return "LimboResolution";
+  }
+
+  UNREACHABLE();
+}
+
+}  // namespace
+
+std::ostream& operator<<(std::ostream& os, QueryPurpose purpose) {
+  return os << ToString(purpose);
+}
+
+// MARK: - TargetData
+
+TargetData::TargetData(Target target,
+                       TargetId target_id,
+                       ListenSequenceNumber sequence_number,
+                       QueryPurpose purpose,
+                       SnapshotVersion snapshot_version,
+                       SnapshotVersion last_limbo_free_snapshot_version,
+                       ByteString resume_token)
+    : target_(std::move(target)),
+      target_id_(target_id),
+      sequence_number_(sequence_number),
+      purpose_(purpose),
+      snapshot_version_(std::move(snapshot_version)),
+      last_limbo_free_snapshot_version_(
+          std::move(last_limbo_free_snapshot_version)),
+      resume_token_(std::move(resume_token)) {
+}
+
+TargetData::TargetData(Target target,
+                       int target_id,
+                       ListenSequenceNumber sequence_number,
+                       QueryPurpose purpose)
+    : TargetData(std::move(target),
+                 target_id,
+                 sequence_number,
+                 purpose,
+                 SnapshotVersion::None(),
+                 SnapshotVersion::None(),
+                 ByteString()) {
+}
+
+TargetData TargetData::Invalid() {
+  return TargetData({}, /*target_id=*/-1, /*sequence_number=*/-1,
+                    QueryPurpose::Listen,
+                    SnapshotVersion(SnapshotVersion::None()),
+                    SnapshotVersion(SnapshotVersion::None()), {});
+}
+
+TargetData TargetData::WithSequenceNumber(
+    ListenSequenceNumber sequence_number) const {
+  return TargetData(target_, target_id_, sequence_number, purpose_,
+                    snapshot_version_, last_limbo_free_snapshot_version_,
+                    resume_token_);
+}
+
+TargetData TargetData::WithResumeToken(ByteString resume_token,
+                                       SnapshotVersion snapshot_version) const {
+  return TargetData(target_, target_id_, sequence_number_, purpose_,
+                    std::move(snapshot_version),
+                    last_limbo_free_snapshot_version_, std::move(resume_token));
+}
+
+TargetData TargetData::WithLastLimboFreeSnapshotVersion(
+    SnapshotVersion last_limbo_free_snapshot_version) const {
+  return TargetData(target_, target_id_, sequence_number_, purpose_,
+                    snapshot_version_,
+                    std::move(last_limbo_free_snapshot_version), resume_token_);
+}
+
+bool operator==(const TargetData& lhs, const TargetData& rhs) {
+  return lhs.target() == rhs.target() && lhs.target_id() == rhs.target_id() &&
+         lhs.sequence_number() == rhs.sequence_number() &&
+         lhs.purpose() == rhs.purpose() &&
+         lhs.snapshot_version() == rhs.snapshot_version() &&
+         lhs.resume_token() == rhs.resume_token();
+}
+
+size_t TargetData::Hash() const {
+  return util::Hash(target_, target_id_, sequence_number_, purpose_,
+                    snapshot_version_, resume_token_);
+}
+
+std::string TargetData::ToString() const {
+  std::ostringstream ss;
+  ss << *this;
+  return ss.str();
+}
+
+std::ostream& operator<<(std::ostream& os, const TargetData& value) {
+  return os << "TargetData(target=" << value.target_
+            << ", target_id=" << value.target_id_
+            << ", purpose=" << value.purpose_
+            << ", version=" << value.snapshot_version_
+            << ", last_limbo_free_snapshot_version="
+            << value.last_limbo_free_snapshot_version_
+            << ", resume_token=" << value.resume_token_ << ")";
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.h
new file mode 100644
index 0000000..5206145
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/local/target_data.h	
@@ -0,0 +1,189 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_LOCAL_TARGET_DATA_H_
+#define FIRESTORE_CORE_SRC_LOCAL_TARGET_DATA_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/core/target.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/** An enumeration for the different purposes we have for queries. */
+enum class QueryPurpose {
+  /** A regular, normal query. */
+  Listen,
+
+  /**
+   * The query was used to refill a query after an existence filter mismatch.
+   */
+  ExistenceFilterMismatch,
+
+  /** The query was used to resolve a limbo document. */
+  LimboResolution,
+};
+
+std::ostream& operator<<(std::ostream& os, QueryPurpose purpose);
+
+/**
+ * An immutable set of metadata that the store will need to keep track of for
+ * each target.
+ */
+class TargetData {
+ public:
+  /**
+   * Creates a new TargetData with the given values.
+   *
+   * @param target The target being listened to.
+   * @param target_id The target to which the query corresponds, assigned by the
+   *     LocalStore for user queries or the SyncEngine for limbo queries.
+   * @param purpose The purpose of the query.
+   * @param snapshot_version The latest snapshot version seen for this target.
+   * @param last_limbo_free_snapshot_version The maximum snapshot version at
+   *     which the associated target view contained no limbo documents.
+   * @param resume_token An opaque, server-assigned token that allows watching a
+   *     target to be resumed after disconnecting without retransmitting all the
+   *     data that matches the query. The resume token essentially identifies a
+   *     point in time from which the server should resume sending results.
+   */
+  TargetData(core::Target target,
+             model::TargetId target_id,
+             model::ListenSequenceNumber sequence_number,
+             QueryPurpose purpose,
+             model::SnapshotVersion snapshot_version,
+             model::SnapshotVersion last_limbo_free_snapshot_version,
+             nanopb::ByteString resume_token);
+
+  /**
+   * Convenience constructor for use when creating a TargetData for the first
+   * time.
+   */
+  TargetData(const core::Target target,
+             int target_id,
+             model::ListenSequenceNumber sequence_number,
+             QueryPurpose purpose);
+
+  /**
+   * Creates an invalid TargetData. Prefer TargetData::Invalid() for
+   * readability.
+   */
+  TargetData() = default;
+
+  /**
+   * Constructs an invalid TargetData. Reading any properties of the returned
+   * value is undefined.
+   */
+  static TargetData Invalid();
+
+  /** The target being listened to. */
+  const core::Target& target() const {
+    return target_;
+  }
+
+  /**
+   * The TargetId to which the target corresponds, assigned by the LocalStore
+   * for user queries or the SyncEngine for limbo queries.
+   */
+  model::TargetId target_id() const {
+    return target_id_;
+  }
+
+  model::ListenSequenceNumber sequence_number() const {
+    return sequence_number_;
+  }
+
+  /** The purpose of the target. */
+  QueryPurpose purpose() const {
+    return purpose_;
+  }
+
+  /** The latest snapshot version seen for this target. */
+  const model::SnapshotVersion& snapshot_version() const {
+    return snapshot_version_;
+  }
+
+  /**
+   * Returns the last snapshot version for which the associated view contained
+   * no limbo documents.
+   */
+  const model::SnapshotVersion& last_limbo_free_snapshot_version() const {
+    return last_limbo_free_snapshot_version_;
+  }
+
+  /**
+   * An opaque, server-assigned token that allows watching a query to be resumed
+   * after disconnecting without retransmitting all the data that matches the
+   * query. The resume token essentially identifies a point in time from which
+   * the server should resume sending results.
+   */
+  const nanopb::ByteString& resume_token() const {
+    return resume_token_;
+  }
+
+  /** Creates a new target data instance with an updated sequence number. */
+  TargetData WithSequenceNumber(
+      model::ListenSequenceNumber sequence_number) const;
+
+  /**
+   * Creates a new target data instance with an updated resume token and
+   * snapshot version.
+   */
+  TargetData WithResumeToken(nanopb::ByteString resume_token,
+                             model::SnapshotVersion snapshot_version) const;
+
+  /**
+   * Creates a new target data instance with an updated last limbo free snapshot
+   * version.
+   */
+  TargetData WithLastLimboFreeSnapshotVersion(
+      model::SnapshotVersion last_limbo_free_snapshot_version) const;
+
+  friend bool operator==(const TargetData& lhs, const TargetData& rhs);
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os, const TargetData& value);
+
+ private:
+  core::Target target_;
+  model::TargetId target_id_ = 0;
+  model::ListenSequenceNumber sequence_number_ = 0;
+  QueryPurpose purpose_ = QueryPurpose::Listen;
+  model::SnapshotVersion snapshot_version_;
+  model::SnapshotVersion last_limbo_free_snapshot_version_;
+  nanopb::ByteString resume_token_;
+};
+
+inline bool operator!=(const TargetData& lhs, const TargetData& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_LOCAL_TARGET_DATA_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/base_path.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/base_path.h
new file mode 100644
index 0000000..3d604f6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/base_path.h	
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_BASE_PATH_H_
+#define FIRESTORE_CORE_SRC_MODEL_BASE_PATH_H_
+
+#include <algorithm>
+#include <cctype>
+#include <initializer_list>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+namespace impl {
+
+/**
+ * BasePath represents a path sequence in the Firestore database. It is composed
+ * of an ordered sequence of string segments.
+ *
+ * BasePath is reassignable and movable. Apart from those, all other mutating
+ * operations return new independent instances.
+ *
+ * ## Subclassing Notes
+ *
+ * BasePath is strictly meant as a base class for concrete implementations. It
+ * doesn't contain a single virtual method, can't be instantiated, and should
+ * never be used in any polymorphic way. BasePath is templated to allow static
+ * factory methods to return objects of the derived class (the expected
+ * inheritance would use CRTP: struct Derived : BasePath<Derived>).
+ */
+template <typename T>
+class BasePath {
+ protected:
+  using SegmentsT = std::vector<std::string>;
+
+ public:
+  using const_iterator = SegmentsT::const_iterator;
+
+  /** Returns i-th segment of the path. */
+  const std::string& operator[](const size_t i) const {
+    HARD_ASSERT(i < segments_.size(), "index %s out of range", i);
+    return segments_[i];
+  }
+
+  /** Returns the first segment of the path. */
+  const std::string& first_segment() const {
+    HARD_ASSERT(!empty(), "Cannot call first_segment on empty path");
+    return segments_[0];
+  }
+  /** Returns the last segment of the path. */
+  const std::string& last_segment() const {
+    HARD_ASSERT(!empty(), "Cannot call last_segment on empty path");
+    return segments_[size() - 1];
+  }
+
+  size_t size() const {
+    return segments_.size();
+  }
+  bool empty() const {
+    return segments_.empty();
+  }
+
+  const_iterator begin() const {
+    return segments_.begin();
+  }
+  const_iterator end() const {
+    return segments_.end();
+  }
+
+  /**
+   * Returns a new path which is the result of concatenating this path with an
+   * additional segment.
+   */
+  T Append(const std::string& segment) const {
+    auto appended = segments_;
+    appended.push_back(segment);
+    return T{std::move(appended)};
+  }
+  T Append(std::string&& segment) const {
+    auto appended = segments_;
+    appended.push_back(std::move(segment));
+    return T{std::move(appended)};
+  }
+
+  /**
+   * Returns a new path which is the result of concatenating this path with an
+   * another path.
+   */
+  T Append(const T& path) const {
+    auto appended = segments_;
+    appended.insert(appended.end(), path.begin(), path.end());
+    return T{std::move(appended)};
+  }
+
+  /**
+   * Returns a new path which is the result of omitting the first n segments of
+   * this path.
+   */
+  T PopFirst(const size_t n = 1) const {
+    HARD_ASSERT(n <= size(), "Cannot call PopFirst(%s) on path of length %s", n,
+                size());
+    return T{begin() + n, end()};
+  }
+
+  /**
+   * Returns a new path which is the result of omitting the last segment of
+   * this path.
+   */
+  T PopLast() const {
+    HARD_ASSERT(!empty(), "Cannot call PopLast() on empty path");
+    return T{begin(), end() - 1};
+  }
+
+  /**
+   * Returns true if this path is a prefix of the given path.
+   *
+   * Empty path is a prefix of any path. Any path is a prefix of itself.
+   */
+  bool IsPrefixOf(const T& rhs) const {
+    return size() <= rhs.size() && std::equal(begin(), end(), rhs.begin());
+  }
+
+  /**
+   * Returns true if the given argument is a direct child of this path.
+   *
+   * Empty path is a parent of any path that consists of a single segment.
+   */
+  bool IsImmediateParentOf(const T& potential_child) const {
+    return size() + 1 == potential_child.size() &&
+           std::equal(begin(), end(), potential_child.begin());
+  }
+
+  util::ComparisonResult CompareTo(const T& rhs) const {
+    return util::CompareContainer(segments_, rhs.segments_);
+  }
+
+  friend bool operator==(const BasePath& lhs, const BasePath& rhs) {
+    return lhs.segments_ == rhs.segments_;
+  }
+
+  size_t Hash() const {
+    return util::Hash(segments_);
+  }
+
+ protected:
+  BasePath() = default;
+  template <typename IterT>
+  BasePath(const IterT begin, const IterT end) : segments_{begin, end} {
+  }
+  BasePath(std::initializer_list<std::string> list) : segments_{list} {
+  }
+  explicit BasePath(SegmentsT&& segments) : segments_{std::move(segments)} {
+  }
+
+ private:
+  SegmentsT segments_;
+};
+
+}  // namespace impl
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_BASE_PATH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.cc
new file mode 100644
index 0000000..63022d5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.cc	
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/database_id.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+constexpr const char* DatabaseId::kDefault;
+
+DatabaseId::DatabaseId(std::string project_id, std::string database_id) {
+  HARD_ASSERT(!project_id.empty());
+  HARD_ASSERT(!database_id.empty());
+
+  rep_ = std::make_shared<Rep>(std::move(project_id), std::move(database_id));
+}
+
+DatabaseId DatabaseId::FromName(const std::string& name) {
+  auto resource_name = ResourcePath::FromString(name);
+  HARD_ASSERT(resource_name.size() > 3 && resource_name[0] == "projects" &&
+                  resource_name[2] == "databases",
+              "Tried to parse an invalid resource name: %s", name);
+  return DatabaseId{resource_name[1], resource_name[3]};
+}
+
+util::ComparisonResult DatabaseId::CompareTo(
+    const firebase::firestore::model::DatabaseId& rhs) const {
+  util::ComparisonResult cmp = util::Compare(project_id(), rhs.project_id());
+  if (!util::Same(cmp)) return cmp;
+
+  return util::Compare(database_id(), rhs.database_id());
+}
+
+std::string DatabaseId::ToString() const {
+  return absl::StrCat("DatabaseId(", project_id(), ":", database_id(), ")");
+}
+
+std::ostream& operator<<(std::ostream& out, const DatabaseId& database_id) {
+  return out << database_id.ToString();
+}
+
+size_t DatabaseId::Hash() const {
+  return util::Hash(project_id(), database_id());
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.h
new file mode 100644
index 0000000..2765117
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/database_id.h	
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DATABASE_ID_H_
+#define FIRESTORE_CORE_SRC_MODEL_DATABASE_ID_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/** A DatabaseId represents a particular database in the Firestore. */
+class DatabaseId : public util::Comparable<DatabaseId> {
+ public:
+  /** The default name for "unset" database ID in resource names. */
+  static constexpr const char* kDefault = "(default)";
+
+  // TODO(wilhuff): Remove this after FieldValue rewrite.
+  DatabaseId() = default;
+
+  /**
+   * Creates and returns a new DatabaseId.
+   *
+   * @param project_id The project for the database.
+   * @param database_id The database in the project to use.
+   */
+  explicit DatabaseId(std::string project_id,
+                      std::string database_id = kDefault);
+
+  /** Returns a DatabaseId from a fully qualified resource name. */
+  static DatabaseId FromName(const std::string& name);
+
+  const std::string& project_id() const {
+    return rep_->project_id;
+  }
+
+  const std::string& database_id() const {
+    return rep_->database_id;
+  }
+
+  /** Whether this is the default database of the project. */
+  bool IsDefaultDatabase() const {
+    return rep_->database_id == kDefault;
+  }
+
+  util::ComparisonResult CompareTo(const DatabaseId& rhs) const;
+
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& out,
+                                  const DatabaseId& database_id);
+
+  size_t Hash() const;
+
+ private:
+  // DocumentIds are copied into every ReferenceValue we create so hide the
+  // actual values behind a shared_ptr to make copying cheaper.
+  struct Rep {
+    Rep(std::string&& project_id, std::string&& database_id)
+        : project_id{std::move(project_id)},
+          database_id{std::move(database_id)} {
+    }
+    std::string project_id;
+    std::string database_id;
+  };
+
+  std::shared_ptr<const Rep> rep_;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DATABASE_ID_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.cc
new file mode 100644
index 0000000..6716ffb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.cc	
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/delete_mutation.h"
+
+#include <cstdlib>
+#include <utility>
+
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+static_assert(
+    sizeof(Mutation) == sizeof(DeleteMutation),
+    "DeleteMutation may not have additional members (everything goes in Rep)");
+
+DeleteMutation::DeleteMutation(DocumentKey key, Precondition precondition)
+    : Mutation(std::make_shared<Rep>(std::move(key), std::move(precondition))) {
+}
+
+DeleteMutation::DeleteMutation(const Mutation& mutation) : Mutation(mutation) {
+  HARD_ASSERT(type() == Type::Delete);
+}
+
+void DeleteMutation::Rep::ApplyToRemoteDocument(
+    MutableDocument& document, const MutationResult& mutation_result) const {
+  VerifyKeyMatches(document);
+
+  HARD_ASSERT(mutation_result.transform_results()->values_count == 0,
+              "Transform results received by DeleteMutation.");
+
+  // Unlike ApplyToLocalView, if we're applying a mutation to a remote document
+  // the server has accepted the mutation so the precondition must have held.
+
+  // We store the deleted document at the commit version of the delete. Any
+  // document version that the server sends us before the delete was applied is
+  // discarded.
+  document.ConvertToNoDocument(mutation_result.version())
+      .SetHasCommittedMutations();
+}
+
+void DeleteMutation::Rep::ApplyToLocalView(MutableDocument& document,
+                                           const Timestamp&) const {
+  VerifyKeyMatches(document);
+
+  if (precondition().IsValidFor(document)) {
+    document.ConvertToNoDocument(SnapshotVersion::None());
+  }
+}
+
+std::string DeleteMutation::Rep::ToString() const {
+  return absl::StrCat("DeleteMutation(key=", key().ToString(),
+                      ", precondition=", precondition().ToString(), ")");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.h
new file mode 100644
index 0000000..a4fc3b5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/delete_mutation.h	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DELETE_MUTATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_DELETE_MUTATION_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutation.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/** Represents a Delete operation. */
+class DeleteMutation : public Mutation {
+ public:
+  DeleteMutation(DocumentKey key, Precondition precondition);
+
+  /**
+   * Casts a Mutation to a DeleteMutation. This is a checked operation that will
+   * assert if the type of the Mutation isn't actually Type::Delete.
+   */
+  explicit DeleteMutation(const Mutation& mutation);
+
+  /** Creates an invalid DeleteMutation instance. */
+  DeleteMutation() = default;
+
+ private:
+  class Rep : public Mutation::Rep {
+   public:
+    using Mutation::Rep::Rep;
+
+    Type type() const override {
+      return Type::Delete;
+    }
+
+    void ApplyToRemoteDocument(
+        MutableDocument& document,
+        const MutationResult& mutation_result) const override;
+
+    void ApplyToLocalView(MutableDocument& document,
+                          const Timestamp&) const override;
+
+    // Does not override Equals or Hash; Mutation's versions are sufficient.
+
+    std::string ToString() const override;
+  };
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DELETE_MUTATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.cc
new file mode 100644
index 0000000..9f74aa5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.cc	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/document.h"
+
+#include <ostream>
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+std::ostream& operator<<(std::ostream& os, const Document& doc) {
+  return os << doc.ToString();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.h
new file mode 100644
index 0000000..ce4d12f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document.h	
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DOCUMENT_H_
+#define FIRESTORE_CORE_SRC_MODEL_DOCUMENT_H_
+
+#include <iosfwd>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/mutable_document.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/** Represents an immutable document in Firestore. */
+class Document {
+ public:
+  Document(MutableDocument document)  // NOLINT(runtime/explicit)
+      : document_{std::move(document)} {
+  }
+
+  Document() = default;
+
+  const MutableDocument& get() const {
+    return document_;
+  }
+
+  const MutableDocument* operator->() const {
+    return &document_;
+  }
+
+  size_t Hash() const {
+    return document_.Hash();
+  }
+
+  std::string ToString() const {
+    return document_.ToString();
+  }
+
+ private:
+  MutableDocument document_;
+};
+
+inline bool operator==(const Document& lhs, const Document& rhs) {
+  return lhs.get() == rhs.get();
+}
+
+inline bool operator!=(const Document& lhs, const Document& rhs) {
+  return !(lhs == rhs);
+}
+
+std::ostream& operator<<(std::ostream& os, const Document& doc);
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DOCUMENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.cc
new file mode 100644
index 0000000..a8da934
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.cc	
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/document_key.h"
+
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+namespace {
+
+void AssertValidPath(const ResourcePath& path) {
+  HARD_ASSERT(DocumentKey::IsDocumentKey(path), "invalid document key path: %s",
+              path.CanonicalString());
+}
+
+}  // namespace
+
+DocumentKey::DocumentKey() : path_{std::make_shared<ResourcePath>()} {
+}
+
+DocumentKey::DocumentKey(const ResourcePath& path)
+    : path_{std::make_shared<ResourcePath>(path)} {
+  AssertValidPath(*path_);
+}
+
+DocumentKey::DocumentKey(ResourcePath&& path)
+    : path_{std::make_shared<ResourcePath>(std::move(path))} {
+  AssertValidPath(*path_);
+}
+
+DocumentKey DocumentKey::FromPathString(const std::string& path) {
+  return DocumentKey{ResourcePath::FromString(path)};
+}
+
+DocumentKey DocumentKey::FromSegments(std::initializer_list<std::string> list) {
+  return DocumentKey{ResourcePath{list}};
+}
+
+DocumentKey DocumentKey::FromName(const std::string& name) {
+  auto resource_name = ResourcePath::FromString(name);
+  HARD_ASSERT(resource_name.size() > 4 && resource_name[0] == "projects" &&
+                  resource_name[2] == "databases" &&
+                  resource_name[4] == "documents",
+              "Tried to parse an invalid key: %s", name);
+  return DocumentKey{resource_name.PopFirst(5)};
+}
+
+const DocumentKey& DocumentKey::Empty() {
+  static const DocumentKey* empty = new DocumentKey();
+  return *empty;
+}
+
+bool DocumentKey::IsDocumentKey(const ResourcePath& path) {
+  return path.size() % 2 == 0;
+}
+
+util::ComparisonResult DocumentKey::CompareTo(const DocumentKey& other) const {
+  return path().CompareTo(other.path());
+}
+
+bool operator==(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return lhs.path() == rhs.path();
+}
+
+bool operator<(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return util::Ascending(lhs.CompareTo(rhs));
+}
+bool operator>(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return util::Descending(lhs.CompareTo(rhs));
+}
+
+size_t DocumentKey::Hash() const {
+  return util::Hash(ToString());
+}
+
+std::string DocumentKey::ToString() const {
+  return path().CanonicalString();
+}
+
+std::ostream& operator<<(std::ostream& os, const DocumentKey& key) {
+  return os << key.ToString();
+}
+
+const ResourcePath& DocumentKey::path() const {
+  return path_ ? *path_ : Empty().path();
+}
+
+/** Returns true if the document is in the specified collection_id. */
+bool DocumentKey::HasCollectionId(const std::string& collection_id) const {
+  size_t size = path().size();
+  return size >= 2 && path()[size - 2] == collection_id;
+}
+
+size_t DocumentKeyHash::operator()(const DocumentKey& key) const {
+  return util::Hash(key.path());
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.h
new file mode 100644
index 0000000..2b17cb7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key.h	
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_H_
+#define FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_H_
+
+#include <functional>
+#include <initializer_list>
+#include <iosfwd>
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace util {
+enum class ComparisonResult;
+}  // namespace util
+
+namespace model {
+
+class ResourcePath;
+
+/**
+ * DocumentKey represents the location of a document in the Firestore database.
+ */
+class DocumentKey {
+ public:
+  /** Creates a "blank" document key not associated with any document. */
+  DocumentKey();
+
+  /** Creates a new document key containing a copy of the given path. */
+  explicit DocumentKey(const ResourcePath& path);
+
+  /** Creates a new document key, taking ownership of the given path. */
+  explicit DocumentKey(ResourcePath&& path);
+
+  /**
+   * Creates and returns a new document key using '/' to split the string into
+   * segments.
+   */
+  static DocumentKey FromPathString(const std::string& path);
+
+  /** Creates and returns a new document key with the given segments. */
+  static DocumentKey FromSegments(std::initializer_list<std::string> list);
+
+  /** Returns a DocumentKey from a fully qualified resource name. */
+  static DocumentKey FromName(const std::string& name);
+
+  /** Returns a shared instance of an empty document key. */
+  static const DocumentKey& Empty();
+
+  /** Returns true iff the given path is a path to a document. */
+  static bool IsDocumentKey(const ResourcePath& path);
+
+  util::ComparisonResult CompareTo(const DocumentKey& other) const;
+
+  friend bool operator==(const DocumentKey& lhs, const DocumentKey& rhs);
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os, const DocumentKey& key);
+
+  /** The path to the document. */
+  const ResourcePath& path() const;
+
+  /** Returns true if the document is in the specified collection_id. */
+  bool HasCollectionId(const std::string& collection_id) const;
+
+ private:
+  // This is an optimization to make passing DocumentKey around cheaper (it's
+  // copied often).
+  std::shared_ptr<const ResourcePath> path_;
+};
+
+inline bool operator!=(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return !(lhs == rhs);
+}
+
+bool operator<(const DocumentKey& lhs, const DocumentKey& rhs);
+bool operator>(const DocumentKey& lhs, const DocumentKey& rhs);
+
+inline bool operator<=(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return !(rhs < lhs);
+}
+
+inline bool operator>=(const DocumentKey& lhs, const DocumentKey& rhs) {
+  return !(lhs < rhs);
+}
+
+struct DocumentKeyHash {
+  size_t operator()(const DocumentKey& key) const;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key_set.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key_set.h
new file mode 100644
index 0000000..ab07bb9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_key_set.h	
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_SET_H_
+#define FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_SET_H_
+
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/model/document_key.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/** Convenience type for a set of keys, since they are so common. */
+using DocumentKeySet = immutable::SortedSet<DocumentKey>;
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DOCUMENT_KEY_SET_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.cc
new file mode 100644
index 0000000..18c4d77
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.cc	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/document_set.h"
+
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/algorithm/container.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+namespace {
+
+inline absl::optional<Document> none() {
+  return absl::optional<Document>{};
+}
+
+}  // namespace
+
+DocumentComparator DocumentComparator::ByKey() {
+  return DocumentComparator([](const Document& lhs, const Document& rhs) {
+    return util::Compare(lhs->key(), rhs->key());
+  });
+}
+
+DocumentSet::DocumentSet(DocumentComparator&& comparator)
+    : index_{}, sorted_set_{std::move(comparator)} {
+}
+
+bool operator==(const DocumentSet& lhs, const DocumentSet& rhs) {
+  return absl::c_equal(lhs.sorted_set_, rhs.sorted_set_);
+}
+
+std::string DocumentSet::ToString() const {
+  return util::ToString(sorted_set_);
+}
+
+std::ostream& operator<<(std::ostream& os, const DocumentSet& set) {
+  return os << set.ToString();
+}
+
+size_t DocumentSet::Hash() const {
+  return util::Hash(sorted_set_);
+}
+
+bool DocumentSet::ContainsKey(const DocumentKey& key) const {
+  return index_.find(key) != index_.end();
+}
+
+absl::optional<Document> DocumentSet::GetDocument(
+    const DocumentKey& key) const {
+  auto found = index_.find(key);
+  return found != index_.end() ? Document(found->second) : none();
+}
+
+absl::optional<Document> DocumentSet::GetFirstDocument() const {
+  auto result = sorted_set_.min();
+  return result != sorted_set_.end() ? *result : none();
+}
+
+absl::optional<Document> DocumentSet::GetLastDocument() const {
+  auto result = sorted_set_.max();
+  return result != sorted_set_.end() ? *result : none();
+}
+
+size_t DocumentSet::IndexOf(const DocumentKey& key) const {
+  absl::optional<Document> doc = GetDocument(key);
+  return doc ? sorted_set_.find_index(*doc) : npos;
+}
+
+DocumentSet DocumentSet::insert(
+    const absl::optional<Document>& document) const {
+  // TODO(mcg): look into making document non-optional.
+  if (!document) {
+    return *this;
+  }
+
+  // Remove any prior mapping of the document's key before adding, preventing
+  // the sorted_set_ from accumulating values that aren't in the index.
+  const DocumentKey& key = (*document)->key();
+  DocumentSet removed = erase(key);
+
+  DocumentMap index = removed.index_.insert(key, *document);
+  SetType set = removed.sorted_set_.insert(*document);
+  return {std::move(index), std::move(set)};
+}
+
+DocumentSet DocumentSet::erase(const DocumentKey& key) const {
+  absl::optional<Document> doc = GetDocument(key);
+  if (!doc) {
+    return *this;
+  }
+
+  DocumentMap index = index_.erase(key);
+  SetType set = sorted_set_.erase(*doc);
+  return {std::move(index), std::move(set)};
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.h
new file mode 100644
index 0000000..ba204de
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/document_set.h	
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_DOCUMENT_SET_H_
+#define FIRESTORE_CORE_SRC_MODEL_DOCUMENT_SET_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/immutable/sorted_container.h"
+#include "Firestore/core/src/immutable/sorted_set.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/util/comparison.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class DocumentComparator : public util::FunctionComparator<Document> {
+ public:
+  using FunctionComparator<Document>::FunctionComparator;
+
+  static DocumentComparator ByKey();
+
+  // TODO(wilhuff): Remove this using statement
+  // This exists to put these two overloads on equal footing. Once the overload
+  // below is gone, this using statement can be removed as well.
+  using FunctionComparator<Document>::Compare;
+};
+
+/**
+ * DocumentSet is an immutable (copy-on-write) collection that holds documents
+ * in order specified by the provided comparator. We always add a document key
+ * comparator on top of what is provided to guarantee document equality based on
+ * the key.
+ */
+class DocumentSet : public immutable::SortedContainer {
+ public:
+  /**
+   * The type of the main collection of documents in an DocumentSet.
+   * @see sorted_set_.
+   */
+  using SetType = immutable::SortedSet<Document, DocumentComparator>;
+
+  // STL container types
+  using value_type = Document;
+  using const_iterator = SetType::const_iterator;
+
+  /**
+   * Creates a new, empty DocumentSet sorted by the given comparator, then by
+   * keys.
+   */
+  explicit DocumentSet(DocumentComparator&& comparator);
+
+  size_t size() const {
+    return index_.size();
+  }
+
+  /** Returns true if the dictionary contains no elements. */
+  bool empty() const {
+    return index_.empty();
+  }
+
+  /** Returns true if this set contains a document with the given key. */
+  bool ContainsKey(const DocumentKey& key) const;
+
+  const DocumentComparator& comparator() const {
+    return sorted_set_.comparator();
+  }
+
+  SetType::const_iterator begin() const {
+    return sorted_set_.begin();
+  }
+  SetType::const_iterator end() const {
+    return sorted_set_.end();
+  }
+
+  /**
+   * Returns the document from this set with the given key if it exists or nil
+   * if it doesn't.
+   */
+  absl::optional<Document> GetDocument(const DocumentKey& key) const;
+
+  /**
+   * Returns the first document in the set according to its built in ordering,
+   * or nil if the set is empty.
+   */
+  absl::optional<Document> GetFirstDocument() const;
+
+  /**
+   * Returns the last document in the set according to its built in ordering, or
+   * nil if the set is empty.
+   */
+  absl::optional<Document> GetLastDocument() const;
+
+  /**
+   * Returns the index of the document with the provided key in the document
+   * set. Returns `npos` if the key is not present.
+   */
+  size_t IndexOf(const DocumentKey& key) const;
+
+  /** Returns a new DocumentSet that contains the given document. */
+  DocumentSet insert(const absl::optional<Document>& document) const;
+
+  /**
+   * Returns a new DocumentSet that excludes any document associated with
+   * the given key.
+   */
+  DocumentSet erase(const DocumentKey& key) const;
+
+  friend bool operator==(const DocumentSet& lhs, const DocumentSet& rhs);
+
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& os, const DocumentSet& set);
+
+  size_t Hash() const;
+
+ private:
+  DocumentSet(DocumentMap&& index, SetType&& sorted_set)
+      : index_(std::move(index)), sorted_set_(std::move(sorted_set)) {
+  }
+
+  /**
+   * An index of the documents in the DocumentSet, indexed by document key.
+   * The index exists to guarantee the uniqueness of document keys in the set
+   * and to allow lookup and removal of documents by key.
+   */
+  DocumentMap index_;
+
+  /**
+   * The main collection of documents in the DocumentSet. The documents are
+   * ordered by a comparator supplied from a query. The SetType collection
+   * exists in addition to the index to allow ordered traversal of the
+   * DocumentSet.
+   */
+  SetType sorted_set_;
+};
+
+inline bool operator!=(const DocumentSet& lhs, const DocumentSet& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_DOCUMENT_SET_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.cc
new file mode 100644
index 0000000..f2a6df8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.cc	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/field_mask.h"
+
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+bool FieldMask::covers(const FieldPath& field_path) const {
+  for (const FieldPath& field_mask_path : fields_) {
+    if (field_mask_path.IsPrefixOf(field_path)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+std::string FieldMask::ToString() const {
+  // Ideally, one should use a string builder. Since this is only non-critical
+  // code for logging and debugging, the logic is kept simple here.
+  std::string result("{ ");
+  for (const FieldPath& field : fields_) {
+    result += field.CanonicalString() + " ";
+  }
+  return result + "}";
+}
+
+size_t FieldMask::Hash() const {
+  return util::Hash(fields_);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.h
new file mode 100644
index 0000000..f46db2b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_mask.h	
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_FIELD_MASK_H_
+#define FIRESTORE_CORE_SRC_MODEL_FIELD_MASK_H_
+
+#include <initializer_list>
+#include <set>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/field_path.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class ObjectValue;
+
+/**
+ * Provides a set of fields that can be used to partially patch a document.
+ * FieldMask is used in conjunction with FieldValue of Object type.
+ *
+ * Examples:
+ *   foo - Overwrites foo entirely with the provided value. If foo is not
+ *       present in the companion FieldValue, the field is deleted.
+ *   foo.bar - Overwrites only the field bar of the object foo. If foo is not an
+ *       object, foo is replaced with an object containing bar.
+ */
+class FieldMask {
+ public:
+  using const_iterator = std::set<FieldPath>::const_iterator;
+
+  FieldMask() = default;
+
+  FieldMask(std::initializer_list<FieldPath> list) : fields_{list} {
+  }
+
+  template <class InputIt>
+  FieldMask(InputIt first, InputIt last) : fields_{first, last} {
+  }
+
+  explicit FieldMask(std::set<FieldPath> fields) : fields_{std::move(fields)} {
+  }
+
+  const_iterator begin() const {
+    return fields_.begin();
+  }
+  const_iterator end() const {
+    return fields_.end();
+  }
+
+  size_t size() const {
+    return fields_.size();
+  }
+
+  /**
+   * Verifies that `field_path` is included by at least one field in this field
+   * mask.
+   *
+   * This is an O(n) operation, where `n` is the size of the field mask.
+   */
+  bool covers(const FieldPath& field_path) const;
+
+  std::string ToString() const;
+
+  size_t Hash() const;
+
+  friend bool operator==(const FieldMask& lhs, const FieldMask& rhs);
+
+ private:
+  std::set<FieldPath> fields_;
+};
+
+inline bool operator==(const FieldMask& lhs, const FieldMask& rhs) {
+  return lhs.fields_ == rhs.fields_;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_FIELD_MASK_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.cc
new file mode 100644
index 0000000..cdabb50
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.cc	
@@ -0,0 +1,234 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/field_path.h"
+
+#include <algorithm>
+#include <utility>
+
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/strings/str_join.h"
+#include "absl/strings/str_replace.h"
+#include "absl/strings/str_split.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+namespace {
+
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+using util::ThrowInvalidArgument;
+
+/**
+ * True if the string could be used as a segment in a field path without
+ * escaping. Valid identifies follow the regex [a-zA-Z_][a-zA-Z0-9_]*
+ */
+bool IsValidIdentifier(const std::string& segment) {
+  if (segment.empty()) {
+    return false;
+  }
+
+  // Note: strictly speaking, only digits are guaranteed by the Standard to
+  // be a contiguous range, while alphabetic characters may have gaps. Ignoring
+  // this peculiarity, because it doesn't affect the platforms that Firestore
+  // supports.
+  const unsigned char first = segment.front();
+  if (first != '_' && (first < 'a' || first > 'z') &&
+      (first < 'A' || first > 'Z')) {
+    return false;
+  }
+  for (size_t i = 1; i != segment.size(); ++i) {
+    const unsigned char c = segment[i];
+    if (c != '_' && (c < 'a' || c > 'z') && (c < 'A' || c > 'Z') &&
+        (c < '0' || c > '9')) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/** A custom formatter to be used with absl::StrJoin(). */
+struct JoinEscaped {
+  static std::string escaped_segment(const std::string& segment) {
+    auto escaped = absl::StrReplaceAll(segment, {{"\\", "\\\\"}, {"`", "\\`"}});
+    const bool needs_escaping = !IsValidIdentifier(escaped);
+    if (needs_escaping) {
+      escaped.insert(escaped.begin(), '`');
+      escaped.push_back('`');
+    }
+    return escaped;
+  }
+
+  template <typename T>
+  void operator()(T* out, const std::string& segment) {
+    out->append(escaped_segment(segment));
+  }
+};
+
+}  // namespace
+
+constexpr const char* FieldPath::kDocumentKeyPath;
+
+FieldPath FieldPath::FromDotSeparatedString(const std::string& path) {
+  return FromDotSeparatedStringView(path);
+}
+
+FieldPath FieldPath::FromDotSeparatedStringView(absl::string_view path) {
+  if (path.find_first_of("~*/[]") != absl::string_view::npos) {
+    ThrowInvalidArgument(
+        "Invalid field path (%s). Paths must not contain '~', '*', '/', '[', "
+        "or ']'",
+        path);
+  }
+
+  SegmentsT segments =
+      absl::StrSplit(path, '.', [path](absl::string_view segment) {
+        if (segment.empty()) {
+          ThrowInvalidArgument(
+              "Invalid field path (%s). Paths must not be empty, begin with "
+              "'.', end with '.', or contain '..'",
+              path);
+        }
+        return true;
+      });
+
+  return FieldPath(std::move(segments));
+}
+
+StatusOr<FieldPath> FieldPath::FromServerFormat(const std::string& path) {
+  return FromServerFormatView(path);
+}
+
+StatusOr<FieldPath> FieldPath::FromServerFormatView(absl::string_view path) {
+  SegmentsT segments;
+  std::string segment;
+  segment.reserve(path.size());
+
+  Status status;
+
+  const auto finish_segment = [&segments, &segment, &path] {
+    if (segment.empty()) {
+      return Status{
+          Error::kErrorInvalidArgument,
+          StringFormat(
+              "Invalid field path (%s). Paths must not be empty, begin with "
+              "'.', end with '.', or contain '..'",
+              path)};
+    }
+    // Move operation will clear segment, but capacity will remain the same
+    // (not, strictly speaking, required by the standard, but true in practice).
+    segments.push_back(std::move(segment));
+    return Status::OK();
+  };
+
+  // Inside backticks, dots are treated literally.
+  bool inside_backticks = false;
+  size_t i = 0;
+  while (i < path.size()) {
+    const char c = path[i];
+    // std::string (and string_view) may contain embedded nulls. For full
+    // compatibility with Objective C behavior, finish upon encountering the
+    // first terminating null.
+    if (c == '\0') {
+      break;
+    }
+
+    switch (c) {
+      case '.':
+        if (!inside_backticks) {
+          status = finish_segment();
+        } else {
+          segment += c;
+        }
+        break;
+
+      case '`':
+        inside_backticks = !inside_backticks;
+        break;
+
+      case '\\':
+        if (i + 1 == path.size()) {
+          status =
+              Status{Error::kErrorInvalidArgument,
+                     StringFormat(
+                         "Trailing escape characters not allowed in %s", path)};
+        } else {
+          ++i;
+          segment += path[i];
+        }
+        break;
+
+      default:
+        segment += c;
+        break;
+    }
+    ++i;
+
+    if (!status.ok()) return status;
+  }
+
+  status = finish_segment();
+  if (!status.ok()) return status;
+
+  if (inside_backticks) {
+    return Status{Error::kErrorInvalidArgument,
+                  StringFormat("Unterminated ` in path %s", path)};
+  }
+
+  return FieldPath{std::move(segments)};
+}
+
+const FieldPath& FieldPath::EmptyPath() {
+  static const FieldPath empty_path;
+  return empty_path;
+}
+
+const FieldPath& FieldPath::KeyFieldPath() {
+  static const FieldPath key_field_path{FieldPath::kDocumentKeyPath};
+  return key_field_path;
+}
+
+bool FieldPath::IsKeyFieldPath() const {
+  return size() == 1 && first_segment() == FieldPath::kDocumentKeyPath;
+}
+
+std::string FieldPath::CanonicalString() const {
+  return absl::StrJoin(begin(), end(), ".", JoinEscaped());
+}
+
+void FieldPath::ValidateSegments(const SegmentsT& segments) {
+  if (segments.empty()) {
+    ThrowInvalidArgument(
+        "Invalid field path. Provided names must not be empty.");
+  }
+
+  for (size_t i = 0; i < segments.size(); i++) {
+    if (segments[i].empty()) {
+      ThrowInvalidArgument(
+          "Invalid field name at index %s. Field names must not be empty.", i);
+    }
+  }
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.h
new file mode 100644
index 0000000..cd65a7b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_path.h	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_FIELD_PATH_H_
+#define FIRESTORE_CORE_SRC_MODEL_FIELD_PATH_H_
+
+#include <initializer_list>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/base_path.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace remote {
+class Serializer;
+}  // namespace remote
+
+namespace model {
+
+/**
+ * A dot-separated path for navigating sub-objects within a document.
+ *
+ * Immutable; all instances are fully independent.
+ */
+class FieldPath : public impl::BasePath<FieldPath>,
+                  public util::Comparable<FieldPath> {
+ public:
+  /** The field path string that represents the document's key. */
+  static constexpr const char* kDocumentKeyPath = "__name__";
+
+  // Note: Xcode 8.2 requires explicit specification of the constructor.
+  FieldPath() : impl::BasePath<FieldPath>() {
+  }
+
+  /** Constructs the path from segments. */
+  template <typename IterT>
+  FieldPath(const IterT begin, const IterT end) : BasePath{begin, end} {
+  }
+  FieldPath(std::initializer_list<std::string> list) : BasePath{list} {
+  }
+  explicit FieldPath(SegmentsT&& segments) : BasePath{std::move(segments)} {
+  }
+
+  /**
+   * Creates and returns a new path from a dot-separated field-path string,
+   * where path segments are separated by a dot ".".
+   *
+   * PORTING NOTE: We define this on the model class to avoid having a tiny
+   * api::FieldPath wrapper class.
+   */
+  static FieldPath FromDotSeparatedString(const std::string& path);
+
+ private:
+  // TODO(b/146372592): Make this public once we can use Abseil across
+  // iOS/public C++ library boundaries.
+  friend class remote::Serializer;
+
+  static FieldPath FromDotSeparatedStringView(absl::string_view path);
+
+ public:
+  /**
+   * Creates and returns a new path from a set of segments received from the
+   * public API.
+   */
+  static FieldPath FromSegments(SegmentsT&& segments) {
+    ValidateSegments(segments);
+    FieldPath path(std::move(segments));
+    return path;
+  }
+
+  /**
+   * Creates and returns a new path from the server formatted field-path string,
+   * where path segments are separated by a dot "." and optionally encoded using
+   * backticks.
+   */
+  static util::StatusOr<FieldPath> FromServerFormat(const std::string& path);
+
+ private:
+  // TODO(b/146372592): Make this public once we can use Abseil across
+  // iOS/public C++ library boundaries.
+  static util::StatusOr<FieldPath> FromServerFormatView(absl::string_view path);
+
+ public:
+  /** Returns a field path that represents an empty path. */
+  static const FieldPath& EmptyPath();
+  /** Returns a field path that represents a document key. */
+  static const FieldPath& KeyFieldPath();
+
+  /** True if this FieldPath represents a document key. */
+  bool IsKeyFieldPath() const;
+
+  /** Returns a standardized string representation of this path. */
+  std::string CanonicalString() const;
+
+ private:
+  static void ValidateSegments(const SegmentsT& segments);
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_FIELD_PATH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.cc
new file mode 100644
index 0000000..a71a29d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.cc	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/field_transform.h"
+
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/model/transform_operation.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+FieldTransform::FieldTransform(FieldPath path,
+                               TransformOperation transformation) noexcept
+    : path_{std::move(path)}, transformation_{std::move(transformation)} {
+}
+
+bool FieldTransform::operator==(const FieldTransform& other) const {
+  return path_ == other.path_ && transformation_ == other.transformation_;
+}
+
+size_t FieldTransform::Hash() const {
+  return util::Hash(path_, transformation_);
+}
+
+std::string FieldTransform::ToString() const {
+  return absl::StrCat("FieldTransform(path=", path_.CanonicalString(),
+                      "transformation=", transformation_.ToString(), ")");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.h
new file mode 100644
index 0000000..a58f16a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/field_transform.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_FIELD_TRANSFORM_H_
+#define FIRESTORE_CORE_SRC_MODEL_FIELD_TRANSFORM_H_
+
+#include <string>
+
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/transform_operation.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/** A field path and the TransformOperation to perform upon it. */
+class FieldTransform {
+ public:
+  FieldTransform(FieldPath path, TransformOperation transformation) noexcept;
+
+  const FieldPath& path() const {
+    return path_;
+  }
+
+  const TransformOperation& transformation() const {
+    return transformation_;
+  }
+
+  bool operator==(const FieldTransform& other) const;
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+ private:
+  FieldPath path_;
+  TransformOperation transformation_;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_FIELD_TRANSFORM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/model_fwd.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/model_fwd.h
new file mode 100644
index 0000000..c59713c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/model_fwd.h	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_MODEL_FWD_H_
+#define FIRESTORE_CORE_SRC_MODEL_MODEL_FWD_H_
+
+#include <cstdint>
+#include <map>
+#include <unordered_map>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+
+class Timestamp;
+
+namespace firestore {
+
+class GeoPoint;
+
+namespace util {
+
+template <typename T>
+struct Comparator;
+
+}  // namespace util
+
+namespace immutable {
+
+template <typename K, typename V, typename C>
+class SortedMap;
+
+template <typename K, typename C>
+class SortedSet;
+
+}  // namespace immutable
+
+namespace nanopb {
+
+template <typename T>
+class Message;
+
+}  // namespace nanopb
+
+namespace model {
+
+class DatabaseId;
+class DeleteMutation;
+class Document;
+class MutableDocument;
+class DocumentComparator;
+class DocumentKey;
+class DocumentSet;
+class FieldMask;
+class FieldPath;
+class FieldTransform;
+class MutableDocument;
+class Mutation;
+class MutationBatch;
+class MutationBatchResult;
+class MutationResult;
+class ObjectValue;
+class PatchMutation;
+class Precondition;
+class SetMutation;
+class SnapshotVersion;
+class TransformOperation;
+class VerifyMutation;
+
+enum class OnlineState;
+
+struct DocumentKeyHash;
+
+using BatchId = int32_t;
+using ListenSequenceNumber = int64_t;
+using TargetId = int32_t;
+
+using DocumentKeySet =
+    immutable::SortedSet<DocumentKey, util::Comparator<DocumentKey>>;
+
+using MutableDocumentMap = immutable::
+    SortedMap<DocumentKey, MutableDocument, util::Comparator<DocumentKey>>;
+
+using DocumentMap =
+    immutable::SortedMap<DocumentKey, Document, util::Comparator<DocumentKey>>;
+
+using DocumentVersionMap =
+    std::unordered_map<DocumentKey, SnapshotVersion, DocumentKeyHash>;
+
+using DocumentUpdateMap =
+    std::unordered_map<DocumentKey, MutableDocument, DocumentKeyHash>;
+
+// A map of FieldPaths to transforms. Sorted so it can be used in
+// ObjectValue::SetAll, which makes it more efficient as it processes field
+// maps one layer at a time.
+using TransformMap =
+    std::map<FieldPath,
+             absl::optional<nanopb::Message<google_firestore_v1_Value>>>;
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_MODEL_FWD_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.cc
new file mode 100644
index 0000000..7b1b905
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.cc	
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/mutable_document.h"
+
+#include <ostream>
+#include <sstream>
+
+#include "Firestore/core/src/model/value_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+MutableDocument MutableDocument::InvalidDocument(DocumentKey document_key) {
+  return {std::move(document_key), DocumentType::kInvalid,
+          SnapshotVersion::None(), std::make_shared<ObjectValue>(),
+          DocumentState::kSynced};
+}
+
+MutableDocument MutableDocument::FoundDocument(DocumentKey document_key,
+                                               const SnapshotVersion& version,
+                                               ObjectValue value) {
+  return std::move(InvalidDocument(std::move(document_key))
+                       .ConvertToFoundDocument(version, std::move(value)));
+}
+
+MutableDocument MutableDocument::NoDocument(DocumentKey document_key,
+                                            const SnapshotVersion& version) {
+  return std::move(
+      InvalidDocument(std::move(document_key)).ConvertToNoDocument(version));
+}
+
+MutableDocument MutableDocument::UnknownDocument(
+    const DocumentKey& document_key, const SnapshotVersion& version) {
+  return std::move(
+      InvalidDocument(document_key).ConvertToUnknownDocument(version));
+}
+
+MutableDocument& MutableDocument::ConvertToFoundDocument(
+    const SnapshotVersion& version, ObjectValue value) {
+  version_ = version;
+  document_type_ = DocumentType::kFoundDocument;
+  value_ = std::make_shared<ObjectValue>(std::move(value));
+  document_state_ = DocumentState::kSynced;
+  return *this;
+}
+
+MutableDocument& MutableDocument::ConvertToFoundDocument(
+    const SnapshotVersion& version) {
+  version_ = version;
+  document_type_ = DocumentType::kFoundDocument;
+  document_state_ = DocumentState::kSynced;
+  return *this;
+}
+
+MutableDocument& MutableDocument::ConvertToNoDocument(
+    const SnapshotVersion& version) {
+  version_ = version;
+  document_type_ = DocumentType::kNoDocument;
+  value_ = std::make_shared<ObjectValue>();
+  document_state_ = DocumentState::kSynced;
+  return *this;
+}
+
+MutableDocument& MutableDocument::ConvertToUnknownDocument(
+    const SnapshotVersion& version) {
+  version_ = version;
+  document_type_ = DocumentType::kUnknownDocument;
+  value_ = std::make_shared<ObjectValue>();
+  document_state_ = DocumentState::kHasCommittedMutations;
+  return *this;
+}
+
+MutableDocument& MutableDocument::SetHasCommittedMutations() {
+  document_state_ = DocumentState::kHasCommittedMutations;
+  return *this;
+}
+
+MutableDocument& MutableDocument::SetHasLocalMutations() {
+  document_state_ = DocumentState::kHasLocalMutations;
+  return *this;
+}
+
+MutableDocument MutableDocument::Clone() const {
+  return MutableDocument(
+      key_, document_type_, version_,
+      std::make_shared<ObjectValue>(DeepClone(value_->Get())), document_state_);
+}
+
+size_t MutableDocument::Hash() const {
+  return key_.Hash();
+}
+
+std::string MutableDocument::ToString() const {
+  std::stringstream stream;
+  stream << "MutableDocument(key=" << key_ << ", type=" << document_type_
+         << ", version=" << version_ << ", value=" << *value_
+         << ", state=" << document_state_;
+  return stream.str();
+}
+
+bool operator==(const MutableDocument& lhs, const MutableDocument& rhs) {
+  return lhs.key_ == rhs.key_ && lhs.document_type_ == rhs.document_type_ &&
+         lhs.version_ == rhs.version_ &&
+         lhs.document_state_ == rhs.document_state_ &&
+         *lhs.value_ == *rhs.value_;
+}
+
+std::ostream& operator<<(std::ostream& os, const MutableDocument& doc) {
+  return os << doc.ToString();
+}
+
+std::ostream& operator<<(std::ostream& os,
+                         MutableDocument::DocumentState state) {
+  switch (state) {
+    case MutableDocument::DocumentState::kHasCommittedMutations:
+      return os << "kHasCommittedMutations";
+    case MutableDocument::DocumentState::kHasLocalMutations:
+      return os << "kHasLocalMutations";
+    case MutableDocument::DocumentState::kSynced:
+      return os << "kSynced";
+  }
+
+  UNREACHABLE();
+}
+
+std::ostream& operator<<(std::ostream& os,
+                         MutableDocument::DocumentType state) {
+  switch (state) {
+    case MutableDocument::DocumentType::kInvalid:
+      return os << "kInvalid";
+    case MutableDocument::DocumentType::kFoundDocument:
+      return os << "kFoundDocument";
+    case MutableDocument::DocumentType::kNoDocument:
+      return os << "kNoDocument";
+    case MutableDocument::DocumentType::kUnknownDocument:
+      return os << "kUnknownDocument";
+  }
+
+  UNREACHABLE();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.h
new file mode 100644
index 0000000..f28f8d7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutable_document.h	
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_MUTABLE_DOCUMENT_H_
+#define FIRESTORE_CORE_SRC_MODEL_MUTABLE_DOCUMENT_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/**
+ * Represents a document in Firestore with a key, version, data and whether it
+ * has local mutations applied to it.
+ *
+ * Documents can transition between states via `ConvertToFoundDocument()`,
+ * `ConvertToNoDocument()` and `ConvertToUnknownDocument()`. If a document does
+ * not transition to one of these states even after all mutations have been
+ * applied, `is_valid_document()` returns false and the document should be
+ * removed from all views.
+ */
+class MutableDocument {
+ private:
+  enum class DocumentType {
+    /**
+     * Represents the initial state of a MutableDocument when only the document
+     * key is known. Invalid documents transition to other states as mutations
+     * are applied. If a document remains invalid after applying mutations, it
+     * should be discarded.
+     */
+    kInvalid,
+    /**
+     * Represents a document in Firestore with a key, version, data and whether
+     * the data has local mutations applied to it.
+     */
+    kFoundDocument,
+    /** Represents that no documents exists for the key at the given version. */
+    kNoDocument,
+    /**
+     * Represents an existing document whose data is unknown (e.g. a document
+     * that was updated without a known base document).
+     */
+    kUnknownDocument
+  };
+
+  /** Describes the `hasPendingWrites` state of a document. */
+  enum class DocumentState {
+    /**
+     * Local mutations applied via the mutation queue. Document is potentially
+     * inconsistent.
+     */
+    kHasLocalMutations,
+    /**
+     * Mutations applied based on a write acknowledgment. Document is
+     * potentially inconsistent.
+     */
+    kHasCommittedMutations,
+    /** No mutations applied. Document was sent to us by Watch. */
+    kSynced
+  };
+
+ public:
+  MutableDocument() = default;
+
+  /**
+   * Creates a document with no known version or data. This document can serve
+   * as a base document for mutations.
+   */
+  static MutableDocument InvalidDocument(DocumentKey document_key);
+
+  /**
+   * Creates a new document that is known to exist with the given data at the
+   * given version.
+   */
+  static MutableDocument FoundDocument(DocumentKey document_key,
+                                       const SnapshotVersion& version,
+                                       ObjectValue value);
+
+  /** Creates a new document that is known to not exisr at the given version. */
+  static MutableDocument NoDocument(DocumentKey document_key,
+                                    const SnapshotVersion& version);
+
+  /**
+   * Creates a new document that is known to exist at the given version but
+   * whose data is not known (e.g. a document that was updated without a known
+   * base document).
+   */
+  static MutableDocument UnknownDocument(const DocumentKey& document_key,
+                                         const SnapshotVersion& version);
+
+  /**
+   * Changes the document type to indicate that it exists and that its version
+   * and data are known.
+   */
+  MutableDocument& ConvertToFoundDocument(const SnapshotVersion& version,
+                                          ObjectValue value);
+
+  /**
+   * Changes the document type to indicate that it exists and that its version
+   * and data are known.
+   */
+  MutableDocument& ConvertToFoundDocument(const SnapshotVersion& version);
+
+  /**
+   * Changes the document type to indicate that it doesn't exist at the given
+   * version.
+   */
+  MutableDocument& ConvertToNoDocument(const SnapshotVersion& version);
+
+  /**
+   * Changes the document type to indicate that it exists at a given version but
+   * that its data is not known (e.g. a document that was updated without a
+   * known base document).
+   */
+  MutableDocument& ConvertToUnknownDocument(const SnapshotVersion& version);
+
+  MutableDocument& SetHasCommittedMutations();
+
+  MutableDocument& SetHasLocalMutations();
+
+  /** Creates a new document with a copy of the document's data and state. */
+  MutableDocument Clone() const;
+
+  const DocumentKey& key() const {
+    return key_;
+  }
+
+  const SnapshotVersion& version() const {
+    return version_;
+  }
+
+  bool has_local_mutations() const {
+    return document_state_ == DocumentState::kHasLocalMutations;
+  }
+
+  bool has_committed_mutations() const {
+    return document_state_ == DocumentState::kHasCommittedMutations;
+  }
+
+  bool has_pending_writes() const {
+    return has_local_mutations() || has_committed_mutations();
+  }
+
+  google_firestore_v1_Value value() const {
+    return value_->Get();
+  }
+
+  ObjectValue& data() const {
+    return *value_;
+  }
+
+  /**
+   * Returns the value at the given path or absl::nullopt. If the path is empty,
+   * an identical copy of the FieldValue is returned.
+   *
+   * @param field_path the path to search.
+   * @return The value at the path or absl::nullopt if it doesn't exist.
+   */
+  absl::optional<google_firestore_v1_Value> field(
+      const FieldPath& field_path) const {
+    return value_->Get(field_path);
+  }
+
+  bool is_valid_document() const {
+    return document_type_ != DocumentType ::kInvalid;
+  }
+
+  bool is_found_document() const {
+    return document_type_ == DocumentType ::kFoundDocument;
+  }
+
+  bool is_no_document() const {
+    return document_type_ == DocumentType ::kNoDocument;
+  }
+
+  bool is_unknown_document() const {
+    return document_type_ == DocumentType ::kUnknownDocument;
+  }
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+  friend bool operator==(const MutableDocument& lhs,
+                         const MutableDocument& rhs);
+
+  friend std::ostream& operator<<(std::ostream& os, DocumentState state);
+  friend std::ostream& operator<<(std::ostream& os, DocumentType type);
+
+ private:
+  MutableDocument(DocumentKey key,
+                  DocumentType document_type,
+                  SnapshotVersion version,
+                  std::shared_ptr<ObjectValue> value,
+                  DocumentState document_state)
+      : key_{std::move(key)},
+        document_type_{document_type},
+        version_{version},
+        value_{std::move(value)},
+        document_state_{document_state} {
+  }
+
+  DocumentKey key_;
+  DocumentType document_type_ = DocumentType::kInvalid;
+  SnapshotVersion version_;
+  // Using a shared pointer to ObjectValue makes MutableDocument copy-assignable
+  // without having to manually create a deep clone of its Protobuf contents.
+  std::shared_ptr<ObjectValue> value_ = std::make_shared<ObjectValue>();
+  DocumentState document_state_ = DocumentState::kSynced;
+};
+
+bool operator==(const MutableDocument& lhs, const MutableDocument& rhs);
+
+std::ostream& operator<<(std::ostream& os, const MutableDocument& doc);
+
+inline bool operator!=(const MutableDocument& lhs, const MutableDocument& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_MUTABLE_DOCUMENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.cc
new file mode 100644
index 0000000..5f8ff96
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.cc	
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/mutation.h"
+
+#include <cstdlib>
+#include <ostream>
+#include <sstream>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using nanopb::Message;
+
+std::string MutationResult::ToString() const {
+  return absl::StrCat(
+      "MutationResult(version=", version_.ToString(),
+      ", transform_results=", util::ToString(transform_results_), ")");
+}
+
+std::ostream& operator<<(std::ostream& os, const MutationResult& result) {
+  return os << result.ToString();
+}
+
+bool operator==(const MutationResult& lhs, const MutationResult& rhs) {
+  return lhs.version() == rhs.version() &&
+         *lhs.transform_results_ == *rhs.transform_results_;
+}
+
+void Mutation::ApplyToRemoteDocument(
+    MutableDocument& document, const MutationResult& mutation_result) const {
+  return rep().ApplyToRemoteDocument(document, mutation_result);
+}
+
+void Mutation::ApplyToLocalView(MutableDocument& document,
+                                const Timestamp& local_write_time) const {
+  return rep().ApplyToLocalView(document, local_write_time);
+}
+
+absl::optional<ObjectValue> Mutation::Rep::ExtractTransformBaseValue(
+    const Document& document) const {
+  absl::optional<ObjectValue> base_object;
+
+  for (const FieldTransform& transform : field_transforms_) {
+    auto existing_value = document->field(transform.path());
+    auto coerced_value =
+        transform.transformation().ComputeBaseValue(existing_value);
+    if (coerced_value) {
+      if (!base_object) {
+        base_object = ObjectValue{};
+      }
+      base_object->Set(transform.path(), std::move(*coerced_value));
+    }
+  }
+
+  return base_object;
+}
+
+Mutation::Rep::Rep(DocumentKey&& key, Precondition&& precondition)
+    : key_(std::move(key)),
+      precondition_(std::move(precondition)),
+      field_transforms_(std::vector<FieldTransform>()) {
+}
+
+Mutation::Rep::Rep(DocumentKey&& key,
+                   Precondition&& precondition,
+                   std::vector<FieldTransform>&& field_transforms)
+    : key_(std::move(key)),
+      precondition_(std::move(precondition)),
+      field_transforms_(std::move(field_transforms)) {
+}
+
+bool Mutation::Rep::Equals(const Mutation::Rep& other) const {
+  return type() == other.type() && key_ == other.key_ &&
+         precondition_ == other.precondition_ &&
+         field_transforms_ == other.field_transforms_;
+}
+
+void Mutation::Rep::VerifyKeyMatches(const MutableDocument& document) const {
+  HARD_ASSERT(document.key() == key(),
+              "Can only apply a mutation to a document with the same key");
+}
+
+SnapshotVersion Mutation::Rep::GetPostMutationVersion(
+    const MutableDocument& document) {
+  if (document.is_found_document()) {
+    return document.version();
+  } else {
+    return SnapshotVersion::None();
+  }
+}
+
+TransformMap Mutation::Rep::ServerTransformResults(
+    const ObjectValue& previous_data,
+    const Message<google_firestore_v1_ArrayValue>& server_transform_results)
+    const {
+  TransformMap transform_results;
+  HARD_ASSERT(
+      field_transforms_.size() == server_transform_results->values_count,
+      "server transform result size (%s) should match field transforms "
+      "size (%s)",
+      server_transform_results->values_count, field_transforms_.size());
+
+  for (size_t i = 0; i < server_transform_results->values_count; ++i) {
+    const FieldTransform& field_transform = field_transforms_[i];
+    const TransformOperation& transform = field_transform.transformation();
+    const auto& previous_value = previous_data.Get(field_transform.path());
+    Message<google_firestore_v1_Value> transformed_value =
+        transform.ApplyToRemoteDocument(
+            previous_value, DeepClone(server_transform_results->values[i]));
+    transform_results[field_transform.path()] = std::move(transformed_value);
+  }
+  return transform_results;
+}
+
+TransformMap Mutation::Rep::LocalTransformResults(
+    const ObjectValue& previous_data, const Timestamp& local_write_time) const {
+  TransformMap transform_results;
+  for (const FieldTransform& field_transform : field_transforms_) {
+    const TransformOperation& transform = field_transform.transformation();
+    const auto& previous_value = previous_data.Get(field_transform.path());
+    Message<google_firestore_v1_Value> transformed_value =
+        transform.ApplyToLocalView(previous_value, local_write_time);
+    transform_results[field_transform.path()] = std::move(transformed_value);
+  }
+  return transform_results;
+}
+
+bool operator==(const Mutation& lhs, const Mutation& rhs) {
+  return lhs.rep_ == nullptr
+             ? rhs.rep_ == nullptr
+             : (rhs.rep_ != nullptr && lhs.rep_->Equals(*rhs.rep_));
+}
+
+size_t Mutation::Rep::Hash() const {
+  return util::Hash(type(), key(), precondition(), field_transforms());
+}
+
+std::ostream& operator<<(std::ostream& os, const Mutation& mutation) {
+  return os << mutation.ToString();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.h
new file mode 100644
index 0000000..c644f8f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation.h	
@@ -0,0 +1,350 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_MUTATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_MUTATION_H_
+
+#include <iosfwd>
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/field_transform.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "Firestore/core/src/model/precondition.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class Document;
+class MutableDocument;
+
+/**
+ * The result of applying a mutation to the server. This is a model of the
+ * WriteResult proto message.
+ *
+ * Note that MutationResult does not name which document was mutated. The
+ * association is implied positionally: for each entry in the array of
+ * Mutations, there's a corresponding entry in the array of MutationResults.
+ */
+class MutationResult {
+ public:
+  /** Takes ownership of `transform_results`. */
+  MutationResult(
+      SnapshotVersion version,
+      nanopb::Message<google_firestore_v1_ArrayValue> transform_results)
+      : version_(version), transform_results_{std::move(transform_results)} {
+  }
+
+  MutationResult(MutationResult&& other) noexcept
+      : version_{other.version_},
+        transform_results_{std::move(other.transform_results_)} {
+  }
+
+  /**
+   * The version at which the mutation was committed.
+   *
+   * - For most operations, this is the update_time in the WriteResult.
+   * - For deletes, it is the commit_time of the WriteResponse (because
+   *   deletes are not stored and have no update_time).
+   *
+   * Note that these versions can be different: No-op writes will not change
+   * the update_time even though the commit_time advances.
+   */
+  const SnapshotVersion& version() const {
+    return version_;
+  }
+
+  /**
+   * The resulting fields returned from the backend after a TransformMutation
+   * has been committed. Contains one FieldValue for each FieldTransform that
+   * was in the mutation.
+   *
+   * Will be nullopt if the mutation was not a TransformMutation.
+   */
+  const nanopb::Message<google_firestore_v1_ArrayValue>& transform_results()
+      const {
+    return transform_results_;
+  }
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os,
+                                  const MutationResult& result);
+
+  friend bool operator==(const MutationResult& lhs, const MutationResult& rhs);
+
+ private:
+  SnapshotVersion version_;
+  nanopb::Message<google_firestore_v1_ArrayValue> transform_results_;
+};
+
+/**
+ * Represents a Mutation of a document. Different subclasses of Mutation will
+ * perform different kinds of changes to a base document. For example, a
+ * SetMutation replaces the value of a document and a DeleteMutation deletes a
+ * document.
+ *
+ * In addition to the value of the document mutations also operate on the
+ * version. For local mutations (mutations that haven't been committed yet), we
+ * preserve the existing version for Set and Patch mutations. For
+ * local deletes, we reset the version to 0.
+ *
+ * Here's the expected transition table.
+ *
+ * MUTATION           APPLIED TO      RESULTS IN
+ * SetMutation        Document(v3)    Document(v3)
+ * SetMutation        NoDocument(v3)  Document(v0)
+ * SetMutation        null            Document(v0)
+ * PatchMutation      Document(v3)    Document(v3)
+ * PatchMutation      NoDocument(v3)  NoDocument(v3)
+ * PatchMutation      null            null
+ * DeleteMutation     Document(v3)    NoDocument(v0)
+ * DeleteMutation     NoDocument(v3)  NoDocument(v0)
+ * DeleteMutation     null            NoDocument(v0)
+ *
+ * For acknowledged mutations, we use the update_time of the WriteResponse as
+ * the resulting version for Set and Patch mutations. As deletes have no
+ * explicit update time, we use the commit_time of the WriteResponse for
+ * acknowledged deletes.
+ *
+ * If a mutation is acknowledged by the backend but fails the precondition
+ * check locally, we return an `UnknownDocument` and rely on Watch to send us
+ * the updated version.
+ *
+ * Field transforms are used only with Patch and Set Mutations. We use the
+ * `updateTransforms` field to store transforms, rather than the `transforms`
+ * message.
+ *
+ * Note: Mutation and its subclasses are specially designed to avoid slicing.
+ * You can assign a subclass of Mutation to an instance of Mutation and the
+ * full value is preserved, unsliced. Each subclass declares an explicit
+ * constructor that can recover the derived type. This means that code like
+ * this will work:
+ *
+ *     SetMutation set(...);
+ *     Mutation mutation = set;
+ *     SetMutation recovered(mutation);
+ *
+ * The final line results in an explicit check that will fail if the type of
+ * the underlying data is not actually Type::Set.
+ */
+class Mutation {
+ public:
+  /**
+   * Represents the mutation type. This is used in place of dynamic_cast.
+   */
+  enum class Type { Set, Patch, Delete, Verify };
+
+  /** Creates an invalid mutation. */
+  Mutation() = default;
+
+  /**
+   * Returns true if the given mutation is a valid instance. Default constructed
+   * and moved-from Mutations are not valid.
+   */
+  bool is_valid() const {
+    return rep_ != nullptr;
+  }
+
+  /** The runtime type of this mutation. */
+  Type type() const {
+    return rep().type();
+  }
+
+  const DocumentKey& key() const {
+    return rep().key();
+  }
+  const Precondition& precondition() const {
+    return rep().precondition();
+  }
+
+  const std::vector<FieldTransform>& field_transforms() const {
+    return rep().field_transforms();
+  }
+
+  /**
+   * Applies this mutation to the given Document for the purposes of computing
+   * the committed state of the document after the server has acknowledged that
+   * this mutation has been successfully committed.
+   *
+   * If the input document doesn't match the expected state (e.g. it is invalid
+   * or outdated), the document state may transition to unknown.
+   *
+   * @param document The document to mutate.
+   * @param mutation_result The backend's response of successfully applying the
+   *     mutation.
+   */
+  void ApplyToRemoteDocument(MutableDocument& document,
+                             const MutationResult& mutation_result) const;
+
+  /**
+   * Estimates the latency compensated view of this mutation applied to the
+   * given MaybeDocument.
+   *
+   * Unlike ApplyToRemoteDocument, this method is used before the mutation has
+   * been committed and so it's possible that the mutation is operating on a
+   * locally non-existent document and may produce a non-existent document.
+   *
+   * @param document The document to mutate.
+   * @param local_write_time A timestamp indicating the local write time of the
+   *     batch this mutation is a part of.
+   */
+  void ApplyToLocalView(MutableDocument& document,
+                        const Timestamp& local_write_time) const;
+
+  /**
+   * If this mutation is not idempotent, returns the base value to persist with
+   * this mutation.  If a base value is returned, the mutation is always
+   * applied to this base value, even if document has already been updated.
+   *
+   * The base value is a sparse object that consists of only the document
+   * fields for which this mutation contains a non-idempotent transformation
+   * (e.g. a numeric increment). The provided value guarantees consistent
+   * behavior for non-idempotent transforms and allow us to return the same
+   * latency-compensated value even if the backend has already applied the
+   * mutation. The base value is empty for idempotent mutations, as they can be
+   * re-played even if the backend has already applied them.
+   *
+   * @return a base value to store along with the mutation, or empty for
+   *     idempotent mutations.
+   */
+  absl::optional<ObjectValue> ExtractTransformBaseValue(
+      const Document& document) const {
+    return rep_->ExtractTransformBaseValue(document);
+  }
+
+  friend bool operator==(const Mutation& lhs, const Mutation& rhs);
+
+  size_t Hash() const {
+    return rep().Hash();
+  }
+
+  std::string ToString() const {
+    return rep_ ? rep().ToString() : "(invalid)";
+  }
+
+  friend std::ostream& operator<<(std::ostream& os, const Mutation& mutation);
+
+ protected:
+  class Rep {
+   public:
+    Rep(DocumentKey&& key, Precondition&& precondition);
+
+    Rep(DocumentKey&& key,
+        Precondition&& precondition,
+        std::vector<FieldTransform>&& field_transforms);
+
+    virtual ~Rep() = default;
+
+    virtual Type type() const = 0;
+
+    const DocumentKey& key() const {
+      return key_;
+    }
+
+    const Precondition& precondition() const {
+      return precondition_;
+    }
+
+    const std::vector<FieldTransform>& field_transforms() const {
+      return field_transforms_;
+    }
+
+    virtual void ApplyToRemoteDocument(
+        MutableDocument& document,
+        const MutationResult& mutation_result) const = 0;
+
+    virtual void ApplyToLocalView(MutableDocument& document,
+                                  const Timestamp& local_write_time) const = 0;
+
+    virtual absl::optional<ObjectValue> ExtractTransformBaseValue(
+        const Document& document) const;
+
+    /**
+     * Creates a map of "transform results" (a transform result is a field
+     * value representing the result of applying a transform) for use after a
+     * mutation containing transforms has been acknowledged by the server.
+     *
+     * @param previous_data The state of the data before applying this mutation.
+     * @param server_transform_results The transform results received by the
+     * server.
+     * @return A map of fields to transform results.
+     */
+    TransformMap ServerTransformResults(
+        const ObjectValue& previous_data,
+        const nanopb::Message<google_firestore_v1_ArrayValue>&
+            server_transform_results) const;
+
+    /**
+     * Creates a map of "transform results" (a transform result is a field
+     * value representing the result of applying a transform) for use when
+     * applying a transform locally.
+     *
+     * @param previous_data The state of the data before applying this mutation.
+     * @param local_write_time The local time of the mutation (used to generate
+     * ServerTimestampValues).
+     * @return A map of fields to transform results.
+     */
+    TransformMap LocalTransformResults(const ObjectValue& previous_data,
+                                       const Timestamp& local_write_time) const;
+
+    virtual bool Equals(const Rep& other) const;
+
+    virtual size_t Hash() const;
+
+    virtual std::string ToString() const = 0;
+
+   protected:
+    void VerifyKeyMatches(const MutableDocument& document) const;
+
+    static SnapshotVersion GetPostMutationVersion(
+        const MutableDocument& document);
+
+   private:
+    DocumentKey key_;
+    Precondition precondition_;
+    std::vector<FieldTransform> field_transforms_;
+  };
+
+  explicit Mutation(std::shared_ptr<Rep>&& rep) : rep_(std::move(rep)) {
+  }
+
+  const Rep& rep() const {
+    return *NOT_NULL(rep_);
+  }
+
+ private:
+  std::shared_ptr<Rep> rep_;
+};
+
+inline bool operator!=(const Mutation& lhs, const Mutation& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_MUTATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.cc
new file mode 100644
index 0000000..fbf691f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.cc	
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/mutation_batch.h"
+
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/mutation_batch_result.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/to_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+MutationBatch::MutationBatch(int batch_id,
+                             Timestamp local_write_time,
+                             std::vector<Mutation> base_mutations,
+                             std::vector<Mutation> mutations)
+    : batch_id_(batch_id),
+      local_write_time_(std::move(local_write_time)),
+      base_mutations_(std::move(base_mutations)),
+      mutations_(std::move(mutations)) {
+  HARD_ASSERT(!mutations_.empty(), "Cannot create an empty mutation batch");
+}
+
+void MutationBatch::ApplyToRemoteDocument(
+    MutableDocument& document,
+    const MutationBatchResult& mutation_batch_result) const {
+  const auto& mutation_results = mutation_batch_result.mutation_results();
+  HARD_ASSERT(mutation_results.size() == mutations_.size(),
+              "Mismatch between mutations length (%s) and results length (%s)",
+              mutations_.size(), mutation_results.size());
+
+  for (size_t i = 0; i < mutations_.size(); i++) {
+    const Mutation& mutation = mutations_[i];
+    if (mutation.key() == document.key()) {
+      mutation.ApplyToRemoteDocument(document, mutation_results[i]);
+    }
+  }
+}
+
+void MutationBatch::ApplyToLocalDocument(MutableDocument& document) const {
+  // First, apply the base state. This allows us to apply non-idempotent
+  // transform against a consistent set of values.
+  for (const Mutation& mutation : base_mutations_) {
+    if (mutation.key() == document.key()) {
+      mutation.ApplyToLocalView(document, local_write_time_);
+    }
+  }
+
+  // Second, apply all user-provided mutations.
+  for (const Mutation& mutation : mutations_) {
+    if (mutation.key() == document.key()) {
+      mutation.ApplyToLocalView(document, local_write_time_);
+    }
+  }
+}
+
+void MutationBatch::ApplyToLocalDocumentSet(DocumentMap& document_map) const {
+  // TODO(mrschmidt): This implementation is O(n^2). If we iterate through the
+  // mutations first (as done in `applyToLocalDocument:documentKey:`), we can
+  // reduce the complexity to O(n).
+
+  for (const Mutation& mutation : mutations_) {
+    const DocumentKey& key = mutation.key();
+
+    auto it = document_map.find(key);
+    HARD_ASSERT(it != document_map.end(), "document for key %s not found",
+                key.ToString());
+    // TODO(mutabledocuments): This method should take a map of MutableDocuments
+    // and we should remove this cast.
+    auto& document = const_cast<MutableDocument&>(it->second.get());
+    ApplyToLocalDocument(document);
+    if (!document.is_valid_document()) {
+      document.ConvertToNoDocument(SnapshotVersion::None());
+    }
+  }
+}
+
+DocumentKeySet MutationBatch::keys() const {
+  DocumentKeySet set;
+  for (const Mutation& mutation : mutations_) {
+    set = set.insert(mutation.key());
+  }
+  return set;
+}
+
+bool operator==(const MutationBatch& lhs, const MutationBatch& rhs) {
+  return lhs.batch_id() == rhs.batch_id() &&
+         lhs.local_write_time() == rhs.local_write_time() &&
+         lhs.base_mutations() == rhs.base_mutations() &&
+         lhs.mutations() == rhs.mutations();
+}
+
+std::string MutationBatch::ToString() const {
+  return absl::StrCat("MutationBatch(id=", batch_id_,
+                      ", local_write_time=", local_write_time_.ToString(),
+                      ", mutations=", util::ToString(mutations_), ")");
+}
+
+std::ostream& operator<<(std::ostream& os, const MutationBatch& batch) {
+  return os << batch.ToString();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.h
new file mode 100644
index 0000000..f71879e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch.h	
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_H_
+#define FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/types.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class MutableDocument;
+
+/**
+ * A BatchID that was searched for and not found or a batch ID value known to
+ * be before all known batches.
+ *
+ * BatchId values from the local store are non-negative so this value is before
+ * all batches.
+ */
+constexpr BatchId kBatchIdUnknown = -1;
+
+/**
+ * A batch of mutations that will be sent as one unit to the backend. Batches
+ * can be marked as a tombstone if the mutation queue does not remove them
+ * immediately. When a batch is a tombstone it has no mutations.
+ */
+class MutationBatch {
+ public:
+  MutationBatch(int batch_id,
+                Timestamp local_write_time,
+                std::vector<Mutation> base_mutations,
+                std::vector<Mutation> mutations);
+
+  /** The unique ID of this mutation batch. */
+  int batch_id() const {
+    return batch_id_;
+  }
+
+  /**
+   * Returns the local time at which the mutation batch was created / written;
+   * used to assign local times to server timestamps, etc.
+   */
+  const Timestamp& local_write_time() const {
+    return local_write_time_;
+  }
+
+  /**
+   * Mutations that are used to populate the base values when this mutation is
+   * applied locally. This can be used to locally overwrite values that are
+   * persisted in the remote document cache. Base mutations are never sent to
+   * the backend.
+   */
+  const std::vector<Mutation>& base_mutations() const {
+    return base_mutations_;
+  }
+
+  /**
+   * The user-provided mutations in this mutation batch. User-provided
+   * mutations are applied both locally and remotely on the backend.
+   */
+  const std::vector<Mutation>& mutations() const {
+    return mutations_;
+  }
+
+  /**
+   * Applies all the mutations in this MutationBatch to the specified document
+   * to create a new remote document.
+   *
+   * @param document The document to which to apply mutations.
+   * @param mutation_batch_result The result of applying the MutationBatch to
+   *     the backend.
+   */
+  void ApplyToRemoteDocument(
+      MutableDocument& document,
+      const MutationBatchResult& mutation_batch_result) const;
+
+  /**
+   * Estimates the latency compensated view of all the mutations in this batch
+   * applied to the given MaybeDocument.
+   *
+   * Unlike ApplyToRemoteDocument, this method is used before the mutation has
+   * been committed and so it's possible that the mutation is operating on a
+   * locally non-existent document and may produce a non-existent document.
+   *
+   * @param document The document to which to apply mutations.
+   */
+  void ApplyToLocalDocument(MutableDocument& document) const;
+
+  /**
+   * Computes the local view for all provided documents given the mutations in
+   * this batch.
+   */
+  void ApplyToLocalDocumentSet(DocumentMap& document_map) const;
+
+  /**
+   * Returns the set of unique keys referenced by all mutations in the batch.
+   */
+  DocumentKeySet keys() const;
+
+  friend bool operator==(const MutationBatch& lhs, const MutationBatch& rhs);
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os, const MutationBatch& batch);
+
+ private:
+  int batch_id_;
+  Timestamp local_write_time_;
+  std::vector<Mutation> base_mutations_;
+  std::vector<Mutation> mutations_;
+};
+
+inline bool operator!=(const MutationBatch& lhs, const MutationBatch& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.cc
new file mode 100644
index 0000000..ef34dac
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.cc	
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/mutation_batch_result.h"
+
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+MutationBatchResult::MutationBatchResult(
+    MutationBatch batch,
+    model::SnapshotVersion commit_version,
+    std::vector<model::MutationResult> mutation_results,
+    nanopb::ByteString stream_token)
+    : batch_(std::move(batch)),
+      commit_version_(commit_version),
+      mutation_results_(std::move(mutation_results)),
+      stream_token_(std::move(stream_token)) {
+  HARD_ASSERT(batch_.mutations().size() == mutation_results_.size(),
+              "Number of mutations sent %s must equal results received %s",
+              batch_.mutations().size(), mutation_results_.size());
+
+  const auto& mutations = batch_.mutations();
+  for (size_t i = 0; i < mutations.size(); i++) {
+    absl::optional<SnapshotVersion> version = mutation_results_[i].version();
+    if (!version) {
+      // Deletes don't have a version, so we substitute the commit_version
+      // of the entire batch.
+      version = commit_version_;
+    }
+
+    const DocumentKey& key = mutations[i].key();
+    doc_versions_[key] = *version;
+  }
+}
+
+std::string MutationBatchResult::ToString() const {
+  return absl::StrCat("MutationBatchResult(batch=", batch_.ToString(),
+                      ", commit_version=", commit_version_.ToString(),
+                      ", mutation_results=", util::ToString(mutation_results_),
+                      ", stream_token=", util::ToString(stream_token_), ")");
+}
+
+std::ostream& operator<<(std::ostream& os, const MutationBatchResult& result) {
+  return os << result.ToString();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.h
new file mode 100644
index 0000000..2598e4f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/mutation_batch_result.h	
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_RESULT_H_
+#define FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_RESULT_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using DocumentVersionMap =
+    std::unordered_map<DocumentKey, SnapshotVersion, DocumentKeyHash>;
+
+/**
+ * The result of applying a mutation batch to the backend.
+ *
+ * Note that unlike most classes in firebase::firestore::model, this class is
+ * just a grouping of result values and is not optimized for copying.
+ */
+class MutationBatchResult {
+ public:
+  /**
+   * Creates a new MutationBatchResult for the given batch and results. There
+   * must be one result for each mutation in the batch. This constructor caches
+   * a document=>version mapping (as doc_versions()).
+   */
+  MutationBatchResult(MutationBatch batch,
+                      SnapshotVersion commit_version,
+                      std::vector<MutationResult> mutation_results,
+                      nanopb::ByteString stream_token);
+
+  const MutationBatch& batch() const {
+    return batch_;
+  }
+
+  const SnapshotVersion& commit_version() const {
+    return commit_version_;
+  }
+
+  const std::vector<MutationResult>& mutation_results() const {
+    return mutation_results_;
+  }
+
+  const nanopb::ByteString& stream_token() const {
+    return stream_token_;
+  }
+
+  const DocumentVersionMap& doc_versions() const {
+    return doc_versions_;
+  }
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os,
+                                  const MutationBatchResult& result);
+
+ private:
+  MutationBatch batch_;
+  SnapshotVersion commit_version_;
+  std::vector<MutationResult> mutation_results_;
+  nanopb::ByteString stream_token_;
+  DocumentVersionMap doc_versions_;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_MUTATION_BATCH_RESULT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.cc
new file mode 100644
index 0000000..479e0ee
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.cc	
@@ -0,0 +1,383 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/object_value.h"
+
+#include <algorithm>
+#include <map>
+#include <set>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/nanopb/fields_array.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/types/span.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+namespace {
+
+using nanopb::CheckedSize;
+using nanopb::FreeFieldsArray;
+using nanopb::FreeNanopbMessage;
+using nanopb::MakeArray;
+using nanopb::MakeBytesArray;
+using nanopb::MakeString;
+using nanopb::MakeStringView;
+using nanopb::Message;
+using nanopb::ReleaseFieldOwnership;
+using nanopb::SetRepeatedField;
+
+struct MapEntryKeyCompare {
+  bool operator()(const google_firestore_v1_MapValue_FieldsEntry& entry,
+                  absl::string_view segment) const {
+    return nanopb::MakeStringView(entry.key) < segment;
+  }
+  bool operator()(absl::string_view segment,
+                  const google_firestore_v1_MapValue_FieldsEntry& entry) const {
+    return segment < nanopb::MakeStringView(entry.key);
+  }
+};
+
+/**
+ * Finds an entry by key in the provided map value. Returns `nullptr` if the
+ * entry does not exist.
+ */
+google_firestore_v1_MapValue_FieldsEntry* FindEntry(
+    const google_firestore_v1_Value& value, absl::string_view segment) {
+  if (!IsMap(value)) {
+    return nullptr;
+  }
+  const google_firestore_v1_MapValue& map_value = value.map_value;
+
+  // MapValues in iOS are always stored in sorted order.
+  auto found = std::equal_range(map_value.fields,
+                                map_value.fields + map_value.fields_count,
+                                segment, MapEntryKeyCompare());
+
+  if (found.first == found.second) {
+    return nullptr;
+  }
+
+  return found.first;
+}
+
+size_t CalculateSizeOfUnion(
+    const google_firestore_v1_MapValue& map_value,
+    const std::map<std::string, Message<google_firestore_v1_Value>>& upserts,
+    const std::set<std::string>& deletes) {
+  // Compute the size of the map after applying all mutations. The final size is
+  // the number of existing entries, plus the number of new entries
+  // minus the number of deleted entries.
+  return upserts.size() +
+         std::count_if(
+             map_value.fields, map_value.fields + map_value.fields_count,
+             [&](const google_firestore_v1_MapValue_FieldsEntry& entry) {
+               std::string field = MakeString(entry.key);
+               // Don't count if entry is deleted or if it is a replacement
+               // rather than an insert.
+               return deletes.find(field) == deletes.end() &&
+                      upserts.find(field) == upserts.end();
+             });
+}
+
+/**
+ * Modifies `parent_map` by adding, replacing or deleting the specified
+ * entries.
+ */
+void ApplyChanges(
+    google_firestore_v1_MapValue* parent,
+    std::map<std::string, Message<google_firestore_v1_Value>> upserts,
+    std::set<std::string> deletes) {
+  // TODO(mrschmidt): Consider using `absl::btree_map` and `absl::btree_set` for
+  // potentially better performance.
+  auto source_count = parent->fields_count;
+  auto* source_fields = parent->fields;
+
+  size_t target_count = CalculateSizeOfUnion(*parent, upserts, deletes);
+  auto* target_fields = MakeArray<google_firestore_v1_MapValue_FieldsEntry>(
+      CheckedSize(target_count));
+
+  auto delete_it = deletes.begin();
+  auto upsert_it = upserts.begin();
+
+  // Merge the existing data with the deletes and updates
+  pb_size_t source_index = 0, target_index = 0;
+  while (target_index < target_count) {
+    auto& target_entry = target_fields[target_index];
+
+    if (source_index < source_count) {
+      auto& source_entry = source_fields[source_index];
+      std::string source_key = MakeString(source_entry.key);
+
+      // Check if the source key is deleted
+      if (delete_it != deletes.end() && *delete_it == source_key) {
+        FreeFieldsArray(&source_entry);
+
+        ++delete_it;
+        ++source_index;
+        continue;
+      }
+
+      // Check if the source key is updated by the next upsert
+      if (upsert_it != upserts.end() && upsert_it->first == source_key) {
+        FreeFieldsArray(&source_entry.value);
+
+        target_entry.key = source_entry.key;
+        target_entry.value = *(upsert_it->second.release());
+        SortFields(target_entry.value);
+
+        ++upsert_it;
+        ++source_index;
+        ++target_index;
+        continue;
+      }
+
+      // Check if the source key comes before the next upsert
+      if (upsert_it == upserts.end() || upsert_it->first > source_key) {
+        target_entry = source_entry;
+
+        ++source_index;
+        ++target_index;
+        continue;
+      }
+    }
+
+    // Otherwise, insert the next upsert.
+    target_entry.key = MakeBytesArray(upsert_it->first);
+    target_entry.value = *(upsert_it->second.release());
+    SortFields(target_entry.value);
+
+    ++upsert_it;
+    ++target_index;
+  }
+
+  // Delete any remaining fields in the original map. This only includes fields
+  // that were deleted.
+  for (; source_index < source_count; ++source_index) {
+    FreeFieldsArray(&source_fields[source_index]);
+  }
+
+  free(parent->fields);
+  parent->fields = target_fields;
+  parent->fields_count = CheckedSize(target_count);
+}
+
+}  // namespace
+
+ObjectValue::ObjectValue() {
+  value_->which_value_type = google_firestore_v1_Value_map_value_tag;
+  value_->map_value = {};
+}
+
+ObjectValue::ObjectValue(Message<google_firestore_v1_Value> value)
+    : value_(std::move(value)) {
+  HARD_ASSERT(value_ && IsMap(*value_),
+              "ObjectValues should be backed by a MapValue");
+  SortFields(*value_);
+}
+
+ObjectValue::ObjectValue(const ObjectValue& other)
+    : value_(DeepClone(*other.value_)) {
+}
+
+ObjectValue ObjectValue::FromMapValue(
+    Message<google_firestore_v1_MapValue> map_value) {
+  Message<google_firestore_v1_Value> value;
+  value->which_value_type = google_firestore_v1_Value_map_value_tag;
+  value->map_value = *map_value.release();
+  return ObjectValue{std::move(value)};
+}
+
+ObjectValue ObjectValue::FromFieldsEntry(
+    google_firestore_v1_Document_FieldsEntry* fields_entry, pb_size_t count) {
+  Message<google_firestore_v1_Value> value;
+  value->which_value_type = google_firestore_v1_Value_map_value_tag;
+  SetRepeatedField(
+      &value->map_value.fields, &value->map_value.fields_count,
+      absl::Span<google_firestore_v1_Document_FieldsEntry>(fields_entry, count),
+      [](const google_firestore_v1_Document_FieldsEntry& entry) {
+        return google_firestore_v1_MapValue_FieldsEntry{entry.key, entry.value};
+      });
+  // Prevent double-freeing of the document's fields. The fields are now owned
+  // by ObjectValue.
+  ReleaseFieldOwnership(fields_entry, count);
+  return ObjectValue{std::move(value)};
+}
+
+FieldMask ObjectValue::ToFieldMask() const {
+  return ExtractFieldMask(value_->map_value);
+}
+
+FieldMask ObjectValue::ExtractFieldMask(
+    const google_firestore_v1_MapValue& value) const {
+  std::set<FieldPath> fields;
+
+  for (size_t i = 0; i < value.fields_count; ++i) {
+    const google_firestore_v1_MapValue_FieldsEntry& entry = value.fields[i];
+    FieldPath current_path{MakeString(entry.key)};
+
+    if (!IsMap(entry.value)) {
+      fields.insert(std::move(current_path));
+      continue;
+    }
+
+    // Recursively extract the nested map
+    FieldMask nested_mask = ExtractFieldMask(entry.value.map_value);
+    if (nested_mask.begin() == nested_mask.end()) {
+      // Preserve the empty map by adding it to the FieldMask
+      fields.insert(std::move(current_path));
+    } else {
+      for (const FieldPath& nested_path : nested_mask) {
+        fields.insert(current_path.Append(nested_path));
+      }
+    }
+  }
+
+  return FieldMask(std::move(fields));
+}
+
+absl::optional<google_firestore_v1_Value> ObjectValue::Get(
+    const FieldPath& path) const {
+  if (path.empty()) {
+    return *value_;
+  }
+
+  google_firestore_v1_Value nested_value = *value_;
+  for (const std::string& segment : path) {
+    google_firestore_v1_MapValue_FieldsEntry* entry =
+        FindEntry(nested_value, segment);
+    if (!entry) return absl::nullopt;
+    nested_value = entry->value;
+  }
+  return nested_value;
+}
+
+google_firestore_v1_Value ObjectValue::Get() const {
+  return *value_;
+}
+
+void ObjectValue::Set(const FieldPath& path,
+                      Message<google_firestore_v1_Value> value) {
+  HARD_ASSERT(!path.empty(), "Cannot set field for empty path on ObjectValue");
+
+  google_firestore_v1_MapValue* parent_map = ParentMap(path.PopLast());
+
+  std::map<std::string, Message<google_firestore_v1_Value>> upserts;
+  upserts[path.last_segment()] = std::move(value);
+
+  ApplyChanges(parent_map, std::move(upserts), /*deletes=*/{});
+}
+
+void ObjectValue::SetAll(TransformMap data) {
+  FieldPath parent;
+
+  std::map<std::string, Message<google_firestore_v1_Value>> upserts;
+  std::set<std::string> deletes;
+
+  for (auto& it : data) {
+    const FieldPath& path = it.first;
+    absl::optional<Message<google_firestore_v1_Value>> value =
+        std::move(it.second);
+
+    if (!parent.IsImmediateParentOf(path)) {
+      // Insert the accumulated changes at this parent location
+      google_firestore_v1_MapValue* parent_map = ParentMap(parent);
+      ApplyChanges(parent_map, std::move(upserts), std::move(deletes));
+      upserts.clear();
+      deletes.clear();
+      parent = path.PopLast();
+    }
+
+    if (value) {
+      upserts[path.last_segment()] = std::move(*value);
+    } else {
+      deletes.insert(path.last_segment());
+    }
+  }
+
+  google_firestore_v1_MapValue* parent_map = ParentMap(parent);
+  ApplyChanges(parent_map, std::move(upserts), std::move(deletes));
+}
+
+void ObjectValue::Delete(const FieldPath& path) {
+  HARD_ASSERT(!path.empty(), "Cannot delete field with empty path");
+
+  google_firestore_v1_Value* nested_value = value_.get();
+  for (const std::string& segment : path.PopLast()) {
+    auto* entry = FindEntry(*nested_value, segment);
+    // If the entry is not found, exit early. There is nothing to delete.
+    if (!entry) return;
+    nested_value = &entry->value;
+  }
+
+  // We can only delete a leaf entry if its parent is a map.
+  if (IsMap(*nested_value)) {
+    std::set<std::string> deletes{path.last_segment()};
+    ApplyChanges(&nested_value->map_value, /*upserts=*/{}, deletes);
+  }
+}
+
+std::string ObjectValue::ToString() const {
+  return CanonicalId(*value_);
+}
+
+size_t ObjectValue::Hash() const {
+  return util::Hash(CanonicalId(*value_));
+}
+
+google_firestore_v1_MapValue* ObjectValue::ParentMap(const FieldPath& path) {
+  google_firestore_v1_Value* parent = value_.get();
+
+  // Find a or create a parent map entry for `path`.
+  for (const std::string& segment : path) {
+    google_firestore_v1_MapValue_FieldsEntry* entry =
+        FindEntry(*parent, segment);
+
+    if (entry) {
+      if (entry->value.which_value_type !=
+          google_firestore_v1_Value_map_value_tag) {
+        // Since the element is not a map value, free all existing data and
+        // change it to a map type.
+        FreeFieldsArray(&entry->value);
+        entry->value.which_value_type = google_firestore_v1_Value_map_value_tag;
+        entry->value.map_value = {};
+      }
+
+      parent = &entry->value;
+    } else {
+      // Create a new map value for the current segment.
+      Message<google_firestore_v1_Value> new_entry;
+      new_entry->which_value_type = google_firestore_v1_Value_map_value_tag;
+      new_entry->map_value = {};
+
+      std::map<std::string, Message<google_firestore_v1_Value>> upserts;
+      upserts[segment] = std::move(new_entry);
+      ApplyChanges(&parent->map_value, std::move(upserts), /*deletes=*/{});
+
+      parent = &(FindEntry(*parent, segment)->value);
+    }
+  }
+
+  return &parent->map_value;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.h
new file mode 100644
index 0000000..45f505a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/object_value.h	
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_OBJECT_VALUE_H_
+#define FIRESTORE_CORE_SRC_MODEL_OBJECT_VALUE_H_
+
+#include <map>
+#include <ostream>
+#include <set>
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/model/field_mask.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+
+/** A structured object value stored in Firestore. */
+class ObjectValue {
+ public:
+  ObjectValue();
+
+  /** Creates a new ObjectValue */
+  explicit ObjectValue(nanopb::Message<google_firestore_v1_Value> value);
+
+  ObjectValue(ObjectValue&& other) noexcept = default;
+  ObjectValue& operator=(ObjectValue&& other) noexcept = default;
+  ObjectValue(const ObjectValue& other);
+
+  ObjectValue& operator=(const ObjectValue&) = delete;
+
+  /**
+   * Creates a new ObjectValue that is backed by the given `map_value`.
+   * ObjectValue takes on ownership of the data.
+   */
+  static ObjectValue FromMapValue(
+      nanopb::Message<google_firestore_v1_MapValue> map_value);
+
+  /**
+   * Creates a new ObjectValue that is backed by the provided document fields.
+   * ObjectValue takes on ownership of the data and zeroes out the pointers in
+   * `fields_entry`. This allows the callsite to destruct the Document proto
+   * without affecting the fields data.
+   */
+  static ObjectValue FromFieldsEntry(
+      google_firestore_v1_Document_FieldsEntry* fields_entry, pb_size_t count);
+
+  /** Recursively extracts the FieldPaths that are set in this ObjectValue. */
+  FieldMask ToFieldMask() const;
+
+  /**
+   * Returns the value at the given path or null.
+   *
+   * @param path the path to search
+   * @return The value at the path or null if it doesn't exist.
+   */
+  absl::optional<google_firestore_v1_Value> Get(const FieldPath& path) const;
+
+  /**
+   * Returns the ObjectValue in its Protobuf representation.
+   */
+  google_firestore_v1_Value Get() const;
+
+  /**
+   * Sets the field to the provided value.
+   *
+   * @param path The field path to set. The path must not be empty.
+   * @param value The value to set.
+   */
+  void Set(const FieldPath& path,
+           nanopb::Message<google_firestore_v1_Value> value);
+
+  /**
+   * Sets the provided fields to the provided values. Fields set to `nullopt`
+   * are deleted.
+   *
+   * Takes ownership of data.
+   *
+   * @param data A map of fields to values (or nullopt for deletes)
+   */
+  void SetAll(TransformMap data);
+
+  /**
+   * Removes the field at the specified path. If there is no field at the
+   * specified path, nothing is changed.
+   *
+   * @param path The field path to remove. The path must not be empty.
+   */
+  void Delete(const FieldPath& path);
+
+  std::string ToString() const;
+
+  size_t Hash() const;
+
+  friend bool operator==(const ObjectValue& lhs, const ObjectValue& rhs);
+  friend std::ostream& operator<<(std::ostream& out,
+                                  const ObjectValue& object_value);
+
+ private:
+  /** Returns the field mask for the provided map value. */
+  FieldMask ExtractFieldMask(const google_firestore_v1_MapValue& value) const;
+
+  /**
+   * Returns the map that contains the leaf element of `path`. If the parent
+   * entry does not yet exist, or if it is not a map, a new map will be created.
+   */
+  google_firestore_v1_MapValue* ParentMap(const FieldPath& path);
+
+  nanopb::Message<google_firestore_v1_Value> value_;
+};
+
+inline bool operator==(const ObjectValue& lhs, const ObjectValue& rhs) {
+  return *lhs.value_ == *rhs.value_;
+}
+
+inline bool operator!=(const ObjectValue& lhs, const ObjectValue& rhs) {
+  return !(lhs == rhs);
+}
+
+inline std::ostream& operator<<(std::ostream& out,
+                                const ObjectValue& object_value) {
+  return out << "ObjectValue(" << *object_value.value_ << ")";
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_OBJECT_VALUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.cc
new file mode 100644
index 0000000..537367c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.cc	
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/patch_mutation.h"
+
+#include <cstdlib>
+#include <utility>
+
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/to_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using nanopb::Message;
+
+static_assert(
+    sizeof(Mutation) == sizeof(PatchMutation),
+    "PatchMutation may not have additional members (everything goes in Rep)");
+
+PatchMutation::PatchMutation(DocumentKey key,
+                             ObjectValue value,
+                             FieldMask mask,
+                             Precondition precondition,
+                             std::vector<FieldTransform> field_transforms)
+    : Mutation(std::make_shared<Rep>(std::move(key),
+                                     std::move(value),
+                                     std::move(mask),
+                                     std::move(precondition),
+                                     std::move(field_transforms))) {
+}
+
+PatchMutation::PatchMutation(const Mutation& mutation) : Mutation(mutation) {
+  HARD_ASSERT(type() == Type::Patch);
+}
+
+PatchMutation::PatchMutation(DocumentKey key,
+                             ObjectValue value,
+                             FieldMask mask,
+                             Precondition precondition)
+    : Mutation(std::make_shared<Rep>(std::move(key),
+                                     std::move(value),
+                                     std::move(mask),
+                                     std::move(precondition),
+                                     std::vector<FieldTransform>())) {
+}
+
+PatchMutation::Rep::Rep(DocumentKey&& key,
+                        ObjectValue&& value,
+                        FieldMask&& mask,
+                        Precondition&& precondition,
+                        std::vector<FieldTransform>&& field_transforms)
+    : Mutation::Rep(
+          std::move(key), std::move(precondition), std::move(field_transforms)),
+      value_(std::move(value)),
+      mask_(std::move(mask)) {
+}
+
+void PatchMutation::Rep::ApplyToRemoteDocument(
+    MutableDocument& document, const MutationResult& mutation_result) const {
+  VerifyKeyMatches(document);
+
+  if (!precondition().IsValidFor(document)) {
+    // Since the mutation was not rejected, we know that the precondition
+    // matched on the backend. We therefore must not have the expected version
+    // of the document in our cache and return an UnknownDocument with the known
+    // update_time.
+    document.ConvertToUnknownDocument(mutation_result.version());
+    return;
+  }
+
+  ObjectValue& data = document.data();
+  auto transform_results =
+      ServerTransformResults(data, mutation_result.transform_results());
+  data.SetAll(GetPatch());
+  data.SetAll(std::move(transform_results));
+  document.ConvertToFoundDocument(mutation_result.version())
+      .SetHasCommittedMutations();
+}
+
+void PatchMutation::Rep::ApplyToLocalView(
+    MutableDocument& document, const Timestamp& local_write_time) const {
+  VerifyKeyMatches(document);
+
+  if (!precondition().IsValidFor(document)) {
+    return;
+  }
+
+  ObjectValue& data = document.data();
+  auto transform_results = LocalTransformResults(data, local_write_time);
+  data.SetAll(GetPatch());
+  data.SetAll(std::move(transform_results));
+  document.ConvertToFoundDocument(GetPostMutationVersion(document))
+      .SetHasLocalMutations();
+}
+
+TransformMap PatchMutation::Rep::GetPatch() const {
+  TransformMap result;
+  for (const FieldPath& path : mask_) {
+    if (!path.empty()) {
+      auto value = value_.Get(path);
+      if (value) {
+        result[path] = DeepClone(*value);
+      } else {
+        result[path] = absl::nullopt;
+      }
+    }
+  }
+  return result;
+}
+
+bool PatchMutation::Rep::Equals(const Mutation::Rep& other) const {
+  if (!Mutation::Rep::Equals(other)) return false;
+
+  const auto& other_rep = static_cast<const PatchMutation::Rep&>(other);
+  return value_ == other_rep.value_ && mask_ == other_rep.mask_;
+}
+
+size_t PatchMutation::Rep::Hash() const {
+  return util::Hash(Mutation::Rep::Hash(), mask_, value_);
+}
+
+std::string PatchMutation::Rep::ToString() const {
+  return absl::StrCat("PatchMutation(key=", key().ToString(),
+                      ", precondition=", precondition().ToString(),
+                      ", value=", value().ToString(),
+                      ", mask=", mask().ToString(),
+                      ", transforms=", util::ToString(field_transforms()), ")");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.h
new file mode 100644
index 0000000..4b34cd2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/patch_mutation.h	
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_PATCH_MUTATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_PATCH_MUTATION_H_
+
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/field_mask.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutation.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/**
+ * A mutation that modifies fields of the document at the given key with the
+ * given values. The values are applied through a field mask:
+ *
+ * - When a field is in both the mask and the values, the corresponding field is
+ *   updated.
+ * - When a field is in neither the mask nor the values, the corresponding field
+ *   is unmodified.
+ * - When a field is in the mask but not in the values, the corresponding field
+ *   is deleted.
+ * - When a field is not in the mask but is in the values, the values map is
+ *   ignored.
+ */
+class PatchMutation : public Mutation {
+ public:
+  PatchMutation(DocumentKey key,
+                ObjectValue value,
+                FieldMask mask,
+                Precondition precondition);
+
+  PatchMutation(DocumentKey key,
+                ObjectValue value,
+                FieldMask mask,
+                Precondition precondition,
+                std::vector<FieldTransform> field_transforms);
+
+  /**
+   * Casts a Mutation to a PatchMutation. This is a checked operation that will
+   * assert if the type of the Mutation isn't actually Type::Patch.
+   */
+  explicit PatchMutation(const Mutation& mutation);
+
+  /** Creates an invalid PatchMutation instance. */
+  PatchMutation() = default;
+
+  /**
+   * Returns the fields and associated values to use when patching the document.
+   */
+  const ObjectValue& value() const {
+    return patch_rep().value();
+  }
+
+  /**
+   * Returns the mask to apply to value(), where only fields that are in both
+   * the field_mask and the value will be updated.
+   */
+  const FieldMask& mask() const {
+    return patch_rep().mask();
+  }
+
+ private:
+  class Rep : public Mutation::Rep {
+   public:
+    Rep(DocumentKey&& key,
+        ObjectValue&& value,
+        FieldMask&& mask,
+        Precondition&& precondition,
+        std::vector<FieldTransform>&& field_transforms);
+
+    Type type() const override {
+      return Type::Patch;
+    }
+
+    const ObjectValue& value() const {
+      return value_;
+    }
+
+    const FieldMask& mask() const {
+      return mask_;
+    }
+
+    /**
+     * Returns this patch mutation as a list of field paths to values (or
+     * nullopt for deletes).
+     */
+    TransformMap GetPatch() const;
+
+    void ApplyToRemoteDocument(
+        MutableDocument& document,
+        const MutationResult& mutation_result) const override;
+
+    void ApplyToLocalView(MutableDocument& document,
+                          const Timestamp& local_write_time) const override;
+
+    bool Equals(const Mutation::Rep& other) const override;
+
+    size_t Hash() const override;
+
+    std::string ToString() const override;
+
+   private:
+    ObjectValue value_;
+    FieldMask mask_;
+  };
+
+  const Rep& patch_rep() const {
+    return static_cast<const Rep&>(rep());
+  }
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_PATCH_MUTATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.cc
new file mode 100644
index 0000000..cacf788
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.cc	
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/precondition.h"
+
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+Precondition::Precondition(Type type, SnapshotVersion update_time, bool exists)
+    : type_(type), update_time_(std::move(update_time)), exists_(exists) {
+}
+
+/* static */
+Precondition Precondition::Exists(bool exists) {
+  return Precondition{Type::Exists, SnapshotVersion::None(), exists};
+}
+
+/* static */
+Precondition Precondition::UpdateTime(SnapshotVersion update_time) {
+  // update_time could be SnapshotVersion::None() in particular for locally
+  // deleted documents.
+  return Precondition{Type::UpdateTime, std::move(update_time), false};
+}
+
+/* static */
+Precondition Precondition::None() {
+  return Precondition{Type::None, SnapshotVersion::None(), false};
+}
+
+bool Precondition::IsValidFor(const MutableDocument& document) const {
+  switch (type_) {
+    case Type::UpdateTime:
+      return document.is_found_document() && document.version() == update_time_;
+    case Type::Exists:
+      return exists_ == document.is_found_document();
+    case Type::None:
+      return true;
+  }
+  UNREACHABLE();
+}
+
+size_t Precondition::Hash() const {
+  return util::Hash(update_time_, exists_, type_);
+}
+
+std::string Precondition::ToString() const {
+  switch (type_) {
+    case Type::None:
+      return "Precondition(<none>)";
+    case Type::Exists:
+      return absl::StrCat("Precondition(exists=", exists_, ")");
+    case Type::UpdateTime:
+      return absl::StrCat("Precondition(update_time=", update_time_.ToString(),
+                          ")");
+  }
+  UNREACHABLE();
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.h
new file mode 100644
index 0000000..0f58a89
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/precondition.h	
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_PRECONDITION_H_
+#define FIRESTORE_CORE_SRC_MODEL_PRECONDITION_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class MutableDocument;
+
+/**
+ * Encodes a precondition for a mutation. This follows the model that the
+ * backend accepts with the special case of an explicit "empty" precondition
+ * (meaning no precondition).
+ */
+class Precondition {
+ public:
+  enum class Type {
+    None,
+    Exists,
+    UpdateTime,
+  };
+
+  /** Creates a new Precondition with an exists flag. */
+  static Precondition Exists(bool exists);
+
+  /** Creates a new Precondition based on a time the document exists at. */
+  static Precondition UpdateTime(SnapshotVersion update_time);
+
+  /** Returns a precondition representing no precondition. */
+  static Precondition None();
+
+  /**
+   * Default constructor which is equivalent to Precondition::None(). Prefer
+   * calling Precondition::None for readability.
+   */
+  Precondition() = default;
+
+  /**
+   * Returns true if the precondition is valid for the given document (and the
+   * document is available).
+   */
+  bool IsValidFor(const MutableDocument& document) const;
+
+  Type type() const {
+    return type_;
+  }
+
+  /** Returns whether this Precondition represents no precondition. */
+  bool is_none() const {
+    return type_ == Type::None;
+  }
+
+  const SnapshotVersion& update_time() const {
+    return update_time_;
+  }
+
+  bool exists() const {
+    return exists_;
+  }
+
+  bool operator==(const Precondition& other) const {
+    return type_ == other.type_ && update_time_ == other.update_time_ &&
+           exists_ == other.exists_;
+  }
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+ private:
+  Precondition(Type type, SnapshotVersion update_time, bool exists);
+
+  // The actual time of this precondition.
+  Type type_ = Type::None;
+
+  // For UpdateTime type, preconditions a mutation based on the last
+  // update_time_.
+  SnapshotVersion update_time_;
+
+  // For Exists type, preconditions a mutation based on whether the document
+  // exists.
+  bool exists_ = false;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_PRECONDITION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.cc
new file mode 100644
index 0000000..a6549b7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.cc	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/resource_path.h"
+
+#include <algorithm>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/exception.h"
+#include "absl/strings/match.h"
+#include "absl/strings/str_join.h"
+#include "absl/strings/str_split.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+ResourcePath ResourcePath::FromString(const std::string& path) {
+  return FromStringView(path);
+}
+
+ResourcePath ResourcePath::FromStringView(absl::string_view path) {
+  // NOTE: The client is ignorant of any path segments containing escape
+  // sequences (e.g. __id123__) and just passes them through raw (they exist
+  // for legacy reasons and should not be used frequently).
+
+  if (absl::StrContains(path, "//")) {
+    util::ThrowInvalidArgument(
+        "Invalid path (%s). Paths must not contain // in them.", path);
+  }
+
+  // SkipEmpty because we may still have an empty segment at the beginning or
+  // end if they had a leading or trailing slash (which we allow).
+  std::vector<std::string> segments =
+      absl::StrSplit(path, '/', absl::SkipEmpty());
+  return ResourcePath{std::move(segments)};
+}
+
+std::string ResourcePath::CanonicalString() const {
+  // NOTE: The client is ignorant of any path segments containing escape
+  // sequences (e.g. __id123__) and just passes them through raw (they exist
+  // for legacy reasons and should not be used frequently).
+
+  return absl::StrJoin(begin(), end(), "/");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.h
new file mode 100644
index 0000000..ff098e8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/resource_path.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_RESOURCE_PATH_H_
+#define FIRESTORE_CORE_SRC_MODEL_RESOURCE_PATH_H_
+
+#include <initializer_list>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/base_path.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+class Serializer;
+}  // namespace remote
+
+namespace model {
+
+/**
+ * A slash-separated path for navigating resources (documents and collections)
+ * within Firestore. Immutable; all instances are fully independent.
+ */
+class ResourcePath : public impl::BasePath<ResourcePath>,
+                     public util::InequalityComparable<ResourcePath> {
+ public:
+  ResourcePath() = default;
+  /** Constructs the path from segments. */
+  template <typename IterT>
+  ResourcePath(const IterT begin, const IterT end) : BasePath{begin, end} {
+  }
+  ResourcePath(std::initializer_list<std::string> list) : BasePath{list} {
+  }
+  explicit ResourcePath(SegmentsT&& segments) : BasePath{std::move(segments)} {
+  }
+  /**
+   * Creates and returns a new path from the given resource-path string, where
+   * the path segments are separated by a slash "/".
+   */
+  static ResourcePath FromString(const std::string& path);
+
+ private:
+  // TODO(b/146372592): Make this public once we can use Abseil across
+  // iOS/public C++ library boundaries.
+  friend class DocumentKey;
+  friend class remote::Serializer;
+
+  static ResourcePath FromStringView(absl::string_view path);
+
+ public:
+  static ResourcePath Empty() {
+    return ResourcePath{};
+  }
+
+  /** Returns a standardized string representation of this path. */
+  std::string CanonicalString() const;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_RESOURCE_PATH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.cc
new file mode 100644
index 0000000..d723fcb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.cc	
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/server_timestamp_util.h"
+
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using nanopb::Message;
+
+const char kTypeKey[] = "__type__";
+const char kLocalWriteTimeKey[] = "__local_write_time__";
+const char kPreviousValueKey[] = "__previous_value__";
+const char kServerTimestampSentinel[] = "server_timestamp";
+
+Message<google_firestore_v1_Value> EncodeServerTimestamp(
+    const Timestamp& local_write_time,
+    absl::optional<google_firestore_v1_Value> previous_value) {
+  pb_size_t count = previous_value ? 3 : 2;
+
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_map_value_tag;
+  result->map_value.fields_count = count;
+  result->map_value.fields =
+      nanopb::MakeArray<google_firestore_v1_MapValue_FieldsEntry>(count);
+
+  auto* field = result->map_value.fields;
+  field->key = nanopb::MakeBytesArray(kTypeKey);
+  field->value.which_value_type = google_firestore_v1_Value_string_value_tag;
+  field->value.string_value = nanopb::MakeBytesArray(kServerTimestampSentinel);
+
+  ++field;
+  field->key = nanopb::MakeBytesArray(kLocalWriteTimeKey);
+  field->value.which_value_type = google_firestore_v1_Value_timestamp_value_tag;
+  field->value.timestamp_value.seconds = local_write_time.seconds();
+  field->value.timestamp_value.nanos = local_write_time.nanoseconds();
+
+  if (previous_value) {
+    ++field;
+    field->key = nanopb::MakeBytesArray(kPreviousValueKey);
+    field->value = *DeepClone(*previous_value).release();
+  }
+
+  return result;
+}
+
+bool IsServerTimestamp(const google_firestore_v1_Value& value) {
+  if (!IsMap(value)) {
+    return false;
+  }
+
+  if (value.map_value.fields_count > 3) {
+    return false;
+  }
+
+  for (size_t i = 0; i < value.map_value.fields_count; ++i) {
+    const auto& field = value.map_value.fields[i];
+    absl::string_view key = nanopb::MakeStringView(field.key);
+    if (key == kTypeKey) {
+      return field.value.which_value_type ==
+                 google_firestore_v1_Value_string_value_tag &&
+             nanopb::MakeStringView(field.value.string_value) ==
+                 kServerTimestampSentinel;
+    }
+  }
+
+  return false;
+}
+
+google_protobuf_Timestamp GetLocalWriteTime(
+    const firebase::firestore::google_firestore_v1_Value& value) {
+  for (size_t i = 0; i < value.map_value.fields_count; ++i) {
+    const auto& field = value.map_value.fields[i];
+    absl::string_view key = nanopb::MakeStringView(field.key);
+    if (key == kLocalWriteTimeKey &&
+        field.value.which_value_type ==
+            google_firestore_v1_Value_timestamp_value_tag) {
+      return field.value.timestamp_value;
+    }
+  }
+
+  HARD_FAIL("LocalWriteTime not found");
+}
+
+absl::optional<google_firestore_v1_Value> GetPreviousValue(
+    const google_firestore_v1_Value& value) {
+  for (size_t i = 0; i < value.map_value.fields_count; ++i) {
+    const auto& field = value.map_value.fields[i];
+    absl::string_view key = nanopb::MakeStringView(field.key);
+    if (key == kPreviousValueKey) {
+      if (IsServerTimestamp(field.value)) {
+        return GetPreviousValue(field.value);
+      } else {
+        return field.value;
+      }
+    }
+  }
+
+  return absl::nullopt;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.h
new file mode 100644
index 0000000..6fe8073
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/server_timestamp_util.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_SERVER_TIMESTAMP_UTIL_H_
+#define FIRESTORE_CORE_SRC_MODEL_SERVER_TIMESTAMP_UTIL_H_
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+// Utility methods to handle ServerTimestamps, which are stored using special
+// sentinel fields in MapValues.
+
+/** Encodes the backing data for a server timestamp in a Value proto. */
+nanopb::Message<google_firestore_v1_Value> EncodeServerTimestamp(
+    const Timestamp& local_write_time,
+    absl::optional<google_firestore_v1_Value> previous_value);
+/**
+ * Returns whether the provided value is a field map that contains the
+ * sentinel values of a ServerTimestamp.
+ */
+bool IsServerTimestamp(const google_firestore_v1_Value& value);
+
+/**
+ * Returns the local time at which the timestamp was written to the document.
+ */
+google_protobuf_Timestamp GetLocalWriteTime(
+    const google_firestore_v1_Value& value);
+
+/**
+ * Returns the value of the field before this ServerTimestamp was set.
+ *
+ * Preserving the previous values allows the user to display the last resolved
+ * value until the backend responds with the timestamp.
+ */
+absl::optional<google_firestore_v1_Value> GetPreviousValue(
+    const google_firestore_v1_Value& value);
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_SERVER_TIMESTAMP_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.cc
new file mode 100644
index 0000000..ba54681
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.cc	
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/set_mutation.h"
+
+#include <cstdlib>
+#include <utility>
+
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+static_assert(
+    sizeof(Mutation) == sizeof(SetMutation),
+    "SetMutation may not have additional members (everything goes in Rep)");
+
+SetMutation::SetMutation(DocumentKey key,
+                         ObjectValue value,
+                         Precondition precondition,
+                         std::vector<FieldTransform> field_transforms)
+    : Mutation(std::make_shared<Rep>(std::move(key),
+                                     std::move(value),
+                                     std::move(precondition),
+                                     std::move(field_transforms))) {
+}
+
+SetMutation::SetMutation(const Mutation& mutation) : Mutation(mutation) {
+  HARD_ASSERT(type() == Type::Set);
+}
+
+SetMutation::SetMutation(DocumentKey key,
+                         ObjectValue value,
+                         Precondition precondition)
+    : Mutation(std::make_shared<Rep>(std::move(key),
+                                     std::move(value),
+                                     std::move(precondition),
+                                     std::vector<FieldTransform>())) {
+}
+
+SetMutation::Rep::Rep(DocumentKey&& key,
+                      ObjectValue&& value,
+                      Precondition&& precondition,
+                      std::vector<FieldTransform>&& field_transforms)
+    : Mutation::Rep(
+          std::move(key), std::move(precondition), std::move(field_transforms)),
+      value_(std::move(value)) {
+}
+
+void SetMutation::Rep::ApplyToRemoteDocument(
+    MutableDocument& document, const MutationResult& mutation_result) const {
+  VerifyKeyMatches(document);
+
+  // Unlike ApplyToLocalView, if we're applying a mutation to a remote document
+  // the server has accepted the mutation so the precondition must have held.
+  auto transform_results = ServerTransformResults(
+      document.data(), mutation_result.transform_results());
+  ObjectValue new_data{DeepClone(value_.Get())};
+  new_data.SetAll(std::move(transform_results));
+  document
+      .ConvertToFoundDocument(mutation_result.version(), std::move(new_data))
+      .SetHasCommittedMutations();
+}
+
+void SetMutation::Rep::ApplyToLocalView(
+    MutableDocument& document, const Timestamp& local_write_time) const {
+  VerifyKeyMatches(document);
+
+  if (!precondition().IsValidFor(document)) {
+    return;
+  }
+
+  auto transform_results =
+      LocalTransformResults(document.data(), local_write_time);
+  ObjectValue new_data{DeepClone(value_.Get())};
+  new_data.SetAll(std::move(transform_results));
+  document
+      .ConvertToFoundDocument(GetPostMutationVersion(document),
+                              std::move(new_data))
+      .SetHasLocalMutations();
+}
+
+bool SetMutation::Rep::Equals(const Mutation::Rep& other) const {
+  if (!Mutation::Rep::Equals(other)) return false;
+
+  const auto& other_rep = static_cast<const SetMutation::Rep&>(other);
+  return value_ == other_rep.value_;
+}
+
+size_t SetMutation::Rep::Hash() const {
+  return util::Hash(Mutation::Rep::Hash(), value_);
+}
+
+std::string SetMutation::Rep::ToString() const {
+  return absl::StrCat("SetMutation(key=", key().ToString(),
+                      ", precondition=", precondition().ToString(),
+                      ", value=", value().ToString(),
+                      ", transforms=", util::ToString(field_transforms()), ")");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.h
new file mode 100644
index 0000000..b876f7b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/set_mutation.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_SET_MUTATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_SET_MUTATION_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/object_value.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/**
+ * A mutation that creates or replaces the document at the given key with the
+ * object value contents.
+ */
+class SetMutation : public Mutation {
+ public:
+  SetMutation(DocumentKey key, ObjectValue value, Precondition precondition);
+
+  SetMutation(DocumentKey key,
+              ObjectValue value,
+              Precondition precondition,
+              std::vector<FieldTransform> field_transforms);
+
+  /**
+   * Casts a Mutation to a SetMutation. This is a checked operation that will
+   * assert if the type of the Mutation isn't actually Type::Set.
+   */
+  explicit SetMutation(const Mutation& mutation);
+
+  /** Creates an invalid SetMutation instance. */
+  SetMutation() = default;
+
+  /** Returns the object value to use when setting the document. */
+  const ObjectValue& value() const {
+    return set_rep().value();
+  }
+
+ private:
+  class Rep : public Mutation::Rep {
+   public:
+    Rep(DocumentKey&& key,
+        ObjectValue&& value,
+        Precondition&& precondition,
+        std::vector<FieldTransform>&& field_transforms);
+
+    Type type() const override {
+      return Type::Set;
+    }
+
+    const ObjectValue& value() const {
+      return value_;
+    }
+
+    void ApplyToRemoteDocument(
+        MutableDocument& document,
+        const MutationResult& mutation_result) const override;
+
+    void ApplyToLocalView(MutableDocument& document,
+                          const Timestamp& local_write_time) const override;
+
+    bool Equals(const Mutation::Rep& other) const override;
+
+    size_t Hash() const override;
+
+    std::string ToString() const override;
+
+   private:
+    ObjectValue value_;
+  };
+
+  const Rep& set_rep() const {
+    return static_cast<const Rep&>(rep());
+  }
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_SET_MUTATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.cc
new file mode 100644
index 0000000..d7535f6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.cc	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/snapshot_version.h"
+
+#include <ostream>
+
+#include "Firestore/core/src/util/hashing.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+SnapshotVersion::SnapshotVersion(const Timestamp& timestamp)
+    : timestamp_(timestamp) {
+}
+
+const SnapshotVersion& SnapshotVersion::None() {
+  static const SnapshotVersion kNone(Timestamp{});
+  return kNone;
+}
+
+util::ComparisonResult SnapshotVersion::CompareTo(
+    const SnapshotVersion& rhs) const {
+  return util::Compare(timestamp(), rhs.timestamp());
+}
+
+size_t SnapshotVersion::Hash() const {
+  return util::Hash(timestamp_.seconds(), timestamp_.nanoseconds());
+}
+
+std::string SnapshotVersion::ToString() const {
+  return timestamp_.ToString();
+}
+
+std::ostream& operator<<(std::ostream& os, const SnapshotVersion& version) {
+  return os << version.timestamp_;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.h
new file mode 100644
index 0000000..0bf8892
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/snapshot_version.h	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_SNAPSHOT_VERSION_H_
+#define FIRESTORE_CORE_SRC_MODEL_SNAPSHOT_VERSION_H_
+
+#include <iosfwd>
+#include <string>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/util/comparison.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/**
+ * A version of a document in Firestore. This corresponds to the version
+ * timestamp, such as update_time or read_time.
+ */
+class SnapshotVersion : public util::Comparable<SnapshotVersion> {
+ public:
+  /**
+   * Creates a default SnapshotVersion equivalent to SnapshotVersion::None().
+   * Prefer SnapshotVersion::None() for readability.
+   */
+  SnapshotVersion() = default;
+
+  explicit SnapshotVersion(const Timestamp& timestamp);
+
+  const Timestamp& timestamp() const {
+    return timestamp_;
+  }
+
+  /** Creates a new version that is smaller than all other versions. */
+  static const SnapshotVersion& None();
+
+  util::ComparisonResult CompareTo(const SnapshotVersion& rhs) const;
+
+  size_t Hash() const;
+
+  std::string ToString() const;
+
+  friend std::ostream& operator<<(std::ostream& os,
+                                  const SnapshotVersion& version);
+
+ private:
+  Timestamp timestamp_;
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_SNAPSHOT_VERSION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.cc
new file mode 100644
index 0000000..1f016fc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.cc	
@@ -0,0 +1,438 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/transform_operation.h"
+
+#include <functional>
+#include <memory>
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/model/server_timestamp_util.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/algorithm/container.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using nanopb::Message;
+using Type = TransformOperation::Type;
+
+// MARK: - TransformOperation
+
+TransformOperation::TransformOperation(std::shared_ptr<const Rep> rep)
+    : rep_(std::move(rep)) {
+}
+
+/** Returns whether the two are equal. */
+bool operator==(const TransformOperation& lhs, const TransformOperation& rhs) {
+  return lhs.rep_ == nullptr
+             ? rhs.rep_ == nullptr
+             : (rhs.rep_ != nullptr && lhs.rep_->Equals(*rhs.rep_));
+}
+
+std::ostream& operator<<(std::ostream& os, const TransformOperation& op) {
+  return os << op.ToString();
+}
+
+// MARK: - ServerTimestampTransform
+
+static_assert(sizeof(TransformOperation) == sizeof(ServerTimestampTransform),
+              "No additional members allowed (everything must go in Rep)");
+
+class ServerTimestampTransform::Rep : public TransformOperation::Rep {
+ public:
+  Type type() const override {
+    return Type::ServerTimestamp;
+  }
+
+  Message<google_firestore_v1_Value> ApplyToLocalView(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      const Timestamp& local_write_time) const override {
+    return EncodeServerTimestamp(local_write_time, previous_value);
+  }
+
+  Message<google_firestore_v1_Value> ApplyToRemoteDocument(
+      const absl::optional<google_firestore_v1_Value>&,
+      Message<google_firestore_v1_Value> transform_result) const override {
+    return transform_result;
+  }
+
+  absl::optional<nanopb::Message<google_firestore_v1_Value>> ComputeBaseValue(
+      const absl::optional<google_firestore_v1_Value>&) const override {
+    // Server timestamps are idempotent and don't require a base value.
+    return absl::nullopt;
+  }
+
+  bool Equals(const TransformOperation::Rep& other) const override {
+    // All ServerTimestampTransform objects are equal.
+    return other.type() == Type::ServerTimestamp;
+  }
+
+  size_t Hash() const override {
+    // An arbitrary number, since all instances are equal.
+    return 37;
+  }
+
+  std::string ToString() const override {
+    return "ServerTimestamp";
+  }
+};
+
+ServerTimestampTransform::ServerTimestampTransform()
+    : TransformOperation(std::make_shared<const Rep>()) {
+}
+
+// MARK: - ArrayTransform
+
+static_assert(sizeof(TransformOperation) == sizeof(ArrayTransform),
+              "No additional members allowed (everything must go in Rep)");
+
+/**
+ * Transforms an array via a union or remove operation (for convenience, we use
+ * this class for both Type::ArrayUnion and Type::ArrayRemove).
+ */
+class ArrayTransform::Rep : public TransformOperation::Rep {
+ public:
+  Rep(Type type, Message<google_firestore_v1_ArrayValue> elements)
+      : type_(type), elements_{std::move(elements)} {
+  }
+
+  Type type() const override {
+    return type_;
+  }
+
+  Message<google_firestore_v1_Value> ApplyToLocalView(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      const Timestamp&) const override {
+    return Apply(previous_value);
+  }
+
+  Message<google_firestore_v1_Value> ApplyToRemoteDocument(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      Message<google_firestore_v1_Value>) const override {
+    // The server just sends null as the transform result for array operations,
+    // so we have to calculate a result the same as we do for local
+    // applications.
+    return Apply(previous_value);
+  }
+
+  absl::optional<nanopb::Message<google_firestore_v1_Value>> ComputeBaseValue(
+      const absl::optional<google_firestore_v1_Value>&) const override {
+    // Array transforms are idempotent and don't require a base value.
+    return absl::nullopt;
+  }
+
+  google_firestore_v1_ArrayValue elements() const {
+    return *elements_;
+  }
+
+  bool Equals(const TransformOperation::Rep& other) const override;
+
+  size_t Hash() const override;
+
+  std::string ToString() const override;
+
+ private:
+  friend class ArrayTransform;
+
+  /**
+   * Inspects the provided value, returning a copy of the internal array if it's
+   * of type Array and an empty array if it's nil or any other type of
+   * google_firestore_v1_Value.
+   */
+  Message<google_firestore_v1_ArrayValue> CoercedFieldValueArray(
+      const absl::optional<google_firestore_v1_Value>& value) const;
+
+  Message<google_firestore_v1_Value> Apply(
+      const absl::optional<google_firestore_v1_Value>& previous_value) const;
+
+  Type type_;
+  nanopb::Message<google_firestore_v1_ArrayValue> elements_;
+};
+
+namespace {
+
+constexpr bool IsArrayTransform(Type type) {
+  return type == Type::ArrayUnion || type == Type::ArrayRemove;
+}
+
+}  // namespace
+
+ArrayTransform::ArrayTransform(Type type,
+                               Message<google_firestore_v1_ArrayValue> elements)
+    : TransformOperation(
+          std::make_shared<const Rep>(type, std::move(elements))) {
+  HARD_ASSERT(IsArrayTransform(type), "Expected array transform type; got %s",
+              type);
+}
+
+ArrayTransform::ArrayTransform(const TransformOperation& op)
+    : TransformOperation(op) {
+  HARD_ASSERT(IsArrayTransform(op.type()),
+              "Expected array transform type; got %s", op.type());
+}
+
+google_firestore_v1_ArrayValue ArrayTransform::elements() const {
+  return *(array_rep().elements_);
+}
+
+const ArrayTransform::Rep& ArrayTransform::array_rep() const {
+  return static_cast<const ArrayTransform::Rep&>(rep());
+}
+
+bool ArrayTransform::Rep::Equals(const TransformOperation::Rep& other) const {
+  if (other.type() != type()) {
+    return false;
+  }
+  auto& other_rep = static_cast<const ArrayTransform::Rep&>(other);
+  if (other_rep.elements_->values_count != elements_->values_count) {
+    return false;
+  }
+  for (pb_size_t i = 0; i < elements_->values_count; i++) {
+    if (other_rep.elements_->values[i] != elements_->values[i]) {
+      return false;
+    }
+  }
+  return true;
+}
+
+size_t ArrayTransform::Rep::Hash() const {
+  size_t result = 37;
+  result = 31 * result + (type() == Type::ArrayUnion ? 1231 : 1237);
+  for (size_t i = 0; i < elements_->values_count; i++) {
+    result = 31 * result +
+             std::hash<std::string>()(CanonicalId(elements_->values[i]));
+  }
+  return result;
+}
+
+std::string ArrayTransform::Rep::ToString() const {
+  const char* name = type_ == Type::ArrayUnion ? "ArrayUnion" : "ArrayRemove";
+  return absl::StrCat(name, "(", CanonicalId(*elements_), ")");
+}
+
+Message<google_firestore_v1_ArrayValue>
+ArrayTransform::Rep::CoercedFieldValueArray(
+    const absl::optional<google_firestore_v1_Value>& value) const {
+  if (IsArray(value)) {
+    return DeepClone(value->array_value);
+  } else {
+    // coerce to empty array.
+    return {};
+  }
+}
+
+Message<google_firestore_v1_Value> ArrayTransform::Rep::Apply(
+    const absl::optional<google_firestore_v1_Value>& previous_value) const {
+  Message<google_firestore_v1_ArrayValue> array_value =
+      CoercedFieldValueArray(previous_value);
+  if (type_ == Type::ArrayUnion) {
+    // Gather the list of elements that have to be added.
+    std::vector<Message<google_firestore_v1_Value>> new_elements;
+    for (pb_size_t i = 0; i < elements_->values_count; ++i) {
+      const google_firestore_v1_Value& new_element = elements_->values[i];
+      if (!Contains(*array_value, new_element) &&
+          !std::any_of(new_elements.begin(), new_elements.end(),
+                       [&](const Message<google_firestore_v1_Value>& value) {
+                         return *value == new_element;
+                       })) {
+        new_elements.push_back(DeepClone(new_element));
+      }
+    }
+
+    // Append the elements to the end of the list
+    size_t new_size = array_value->values_count + new_elements.size();
+    array_value->values = nanopb::ResizeArray<google_firestore_v1_Value>(
+        array_value->values, new_size);
+    for (auto& element : new_elements) {
+      array_value->values[array_value->values_count] = *element.release();
+      ++array_value->values_count;
+    }
+  } else {
+    HARD_ASSERT(type_ == Type::ArrayRemove);
+    pb_size_t new_index = 0;
+    for (pb_size_t old_index = 0; old_index < array_value->values_count;
+         ++old_index) {
+      if (Contains(*elements_, array_value->values[old_index])) {
+        nanopb::FreeFieldsArray(&array_value->values[old_index]);
+      } else {
+        array_value->values[new_index] = array_value->values[old_index];
+        ++new_index;
+      }
+    }
+    array_value->values_count = new_index;
+  }
+
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_array_value_tag;
+  result->array_value = *array_value.release();
+  return result;
+}
+
+// MARK: - NumericIncrementTransform
+
+static_assert(sizeof(TransformOperation) == sizeof(NumericIncrementTransform),
+              "No additional members allowed (everything must go in Rep)");
+
+class NumericIncrementTransform::Rep : public TransformOperation::Rep {
+ public:
+  explicit Rep(Message<google_firestore_v1_Value> operand)
+      : operand_(std::move(operand)) {
+  }
+
+  Type type() const override {
+    return Type::Increment;
+  }
+
+  Message<google_firestore_v1_Value> ApplyToLocalView(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      const Timestamp& local_write_time) const override;
+
+  Message<google_firestore_v1_Value> ApplyToRemoteDocument(
+      const absl::optional<google_firestore_v1_Value>&,
+      Message<google_firestore_v1_Value> transform_result) const override {
+    return transform_result;
+  }
+
+  absl::optional<nanopb::Message<google_firestore_v1_Value>> ComputeBaseValue(
+      const absl::optional<google_firestore_v1_Value>& previous_value)
+      const override;
+
+  double OperandAsDouble() const;
+
+  bool Equals(const TransformOperation::Rep& other) const override;
+
+  size_t Hash() const override {
+    return std::hash<std::string>()(CanonicalId(*operand_));
+  }
+
+  std::string ToString() const override {
+    return absl::StrCat("NumericIncrement(", operand_->ToString(), ")");
+  }
+
+ private:
+  friend class NumericIncrementTransform;
+
+  Message<google_firestore_v1_Value> operand_{};
+};
+
+NumericIncrementTransform::NumericIncrementTransform(
+    Message<google_firestore_v1_Value> operand)
+    : TransformOperation(std::make_shared<Rep>(std::move(operand))) {
+  HARD_ASSERT(IsNumber(this->operand()));
+}
+
+NumericIncrementTransform::NumericIncrementTransform(
+    const TransformOperation& op)
+    : TransformOperation(op) {
+  HARD_ASSERT(op.type() == Type::Increment, "Expected increment type; got %s",
+              op.type());
+}
+
+const google_firestore_v1_Value& NumericIncrementTransform::operand() const {
+  return *static_cast<const Rep&>(rep()).operand_;
+}
+
+namespace {
+
+/**
+ * Implements saturating integer addition. Overflows are resolved to
+ * LONG_MAX/LONG_MIN.
+ */
+int64_t SafeIncrement(int64_t x, int64_t y) {
+  if (x > 0 && y > LONG_MAX - x) {
+    return LONG_MAX;
+  }
+
+  if (x < 0 && y < LONG_MIN - x) {
+    return LONG_MIN;
+  }
+
+  return x + y;
+}
+
+}  // namespace
+
+double NumericIncrementTransform::Rep::OperandAsDouble() const {
+  if (IsDouble(*operand_)) {
+    return operand_->double_value;
+  } else if (IsInteger(*operand_)) {
+    return static_cast<double>(operand_->integer_value);
+  } else {
+    HARD_FAIL("Expected 'operand' to be of numeric type, but was %s (type %s)",
+              CanonicalId(*operand_), GetTypeOrder(*operand_));
+  }
+}
+
+Message<google_firestore_v1_Value>
+NumericIncrementTransform::Rep::ApplyToLocalView(
+    const absl::optional<google_firestore_v1_Value>& previous_value,
+    const Timestamp& /* local_write_time */) const {
+  auto base_value = ComputeBaseValue(previous_value);
+  Message<google_firestore_v1_Value> result;
+
+  // Return an integer value only if the previous value and the operand is an
+  // integer.
+  if (IsInteger(**base_value) && IsInteger(*operand_)) {
+    result->which_value_type = google_firestore_v1_Value_integer_value_tag;
+    result->integer_value =
+        SafeIncrement((*base_value)->integer_value, operand_->integer_value);
+  } else if (IsInteger(**base_value)) {
+    result->which_value_type = google_firestore_v1_Value_double_value_tag;
+    result->double_value = (*base_value)->integer_value + OperandAsDouble();
+  } else {
+    HARD_ASSERT(IsDouble(**base_value), "'base_value' is not of numeric type");
+    result->which_value_type = google_firestore_v1_Value_double_value_tag;
+    result->double_value = (*base_value)->double_value + OperandAsDouble();
+  }
+
+  return result;
+}
+
+absl::optional<Message<google_firestore_v1_Value>>
+NumericIncrementTransform::Rep::ComputeBaseValue(
+    const absl::optional<google_firestore_v1_Value>& previous_value) const {
+  if (IsNumber(previous_value)) {
+    return DeepClone(*previous_value);
+  }
+
+  Message<google_firestore_v1_Value> zero_value;
+  zero_value->which_value_type = google_firestore_v1_Value_integer_value_tag;
+  zero_value->integer_value = 0;
+  return zero_value;
+}
+
+bool NumericIncrementTransform::Rep::Equals(
+    const TransformOperation::Rep& other) const {
+  if (other.type() != type()) {
+    return false;
+  }
+
+  return *operand_ ==
+         *static_cast<const NumericIncrementTransform::Rep&>(other).operand_;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.h
new file mode 100644
index 0000000..8041144
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/transform_operation.h	
@@ -0,0 +1,235 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_TRANSFORM_OPERATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_TRANSFORM_OPERATION_H_
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+
+class Timestamp;
+
+namespace firestore {
+namespace model {
+
+/**
+ * Represents a field transform on a mutation.
+ *
+ * Note: TransformOperation and its subclasses are specially designed to avoid
+ * slicing. You can assign a subclass of TransformOperation to an instance of
+ * TransformOperation and the full value is preserved, unsliced. Each subclass
+ * declares an explicit constructor that can recover the derived type. This
+ * means that code like this will work:
+ *
+ *     ArrayTransform array_transform(...);
+ *     TransformOperation transform = array_transform;
+ *     ArrayTransform recovered(transform);
+ *
+ * The final line results in an explicit check that will fail if the type of
+ * the underlying data is not actually an ArrayTransform.
+ */
+class TransformOperation {
+ public:
+  /** All the different kinds to TransformOperation. */
+  enum class Type {
+    ServerTimestamp,
+    ArrayUnion,
+    ArrayRemove,
+    Increment,
+  };
+
+  TransformOperation() = default;
+
+  /** Returns the actual type. */
+  Type type() const {
+    return rep().type();
+  }
+
+ private:
+  // TODO(b/146372592): Make this public once we can use Abseil across
+  // iOS/public C++ library boundaries.
+  friend class Mutation;
+
+  /**
+   * Computes the local transform result against the provided `previous_value`,
+   * optionally using the provided local_write_time.
+   */
+  nanopb::Message<google_firestore_v1_Value> ApplyToLocalView(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      const Timestamp& local_write_time) const {
+    return rep().ApplyToLocalView(previous_value, local_write_time);
+  }
+
+  /**
+   * Computes a final transform result after the transform has been acknowledged
+   * by the server, potentially using the server-provided transform_result.
+   */
+  nanopb::Message<google_firestore_v1_Value> ApplyToRemoteDocument(
+      const absl::optional<google_firestore_v1_Value>& previous_value,
+      nanopb::Message<google_firestore_v1_Value> transform_result) const {
+    return rep().ApplyToRemoteDocument(previous_value,
+                                       std::move(transform_result));
+  }
+
+  /**
+   * If this transform operation is not idempotent, returns the base value to
+   * persist for this transform operation. If a base value is returned, the
+   * transform operation is always applied to this base value, even if document
+   * has already been updated.
+   *
+   * Base values provide consistent behavior for non-idempotent transforms and
+   * allow us to return the same latency-compensated value even if the backend
+   * has already applied the transform operation. The base value is empty for
+   * idempotent transforms, as they can be re-played even if the backend has
+   * already applied them.
+   *
+   * @return a base value to store along with the mutation, or empty for
+   *     idempotent transforms.
+   */
+  absl::optional<nanopb::Message<google_firestore_v1_Value>> ComputeBaseValue(
+      const absl::optional<google_firestore_v1_Value>& previous_value) const {
+    return rep().ComputeBaseValue(previous_value);
+  }
+
+ public:
+  /** Returns whether the two are equal. */
+  friend bool operator==(const TransformOperation& lhs,
+                         const TransformOperation& rhs);
+
+  size_t Hash() const {
+    return rep().Hash();
+  }
+
+  std::string ToString() const {
+    return rep_ ? rep().ToString() : "(invalid)";
+  }
+
+  friend std::ostream& operator<<(std::ostream& os,
+                                  const TransformOperation& op);
+
+ protected:
+  class Rep {
+   public:
+    virtual ~Rep() = default;
+
+    virtual Type type() const = 0;
+
+    virtual nanopb::Message<google_firestore_v1_Value> ApplyToLocalView(
+        const absl::optional<google_firestore_v1_Value>& previous_value,
+        const Timestamp& local_write_time) const = 0;
+
+    virtual nanopb::Message<google_firestore_v1_Value> ApplyToRemoteDocument(
+        const absl::optional<google_firestore_v1_Value>& previous_value,
+        nanopb::Message<google_firestore_v1_Value> transform_result) const = 0;
+
+    virtual absl::optional<nanopb::Message<google_firestore_v1_Value>>
+    ComputeBaseValue(const absl::optional<google_firestore_v1_Value>&
+                         previous_value) const = 0;
+
+    virtual bool Equals(const TransformOperation::Rep& other) const = 0;
+
+    virtual size_t Hash() const = 0;
+
+    virtual std::string ToString() const = 0;
+  };
+
+  explicit TransformOperation(std::shared_ptr<const Rep> rep);
+
+  const Rep& rep() const {
+    return *NOT_NULL(rep_);
+  }
+
+ private:
+  std::shared_ptr<const Rep> rep_;
+};
+
+/** Transforms a value into a server-generated timestamp. */
+class ServerTimestampTransform : public TransformOperation {
+ public:
+  ServerTimestampTransform();
+
+ private:
+  class Rep;
+};
+
+/**
+ * Transforms an array via a union or remove operation (for convenience, we use
+ * this class for both `Type::ArrayUnion` and `Type::ArrayRemove`).
+ */
+class ArrayTransform : public TransformOperation {
+ public:
+  ArrayTransform(Type type,
+                 nanopb::Message<google_firestore_v1_ArrayValue> array_value);
+
+  /**
+   * Casts a TransformOperation to an ArrayTransform. This is a checked
+   * operation that will assert if the type of the TransformOperation isn't
+   * actually `Type::ArrayUnion` or `Type::ArrayRemove`.
+   */
+  explicit ArrayTransform(const TransformOperation& op);
+
+  google_firestore_v1_ArrayValue elements() const;
+
+ private:
+  class Rep;
+
+  const Rep& array_rep() const;
+};
+
+/**
+ * Implements the backend semantics for locally computed NUMERIC_ADD (increment)
+ * transforms. Converts all field values to longs or doubles and resolves
+ * overflows to LONG_MAX/LONG_MIN.
+ */
+class NumericIncrementTransform : public TransformOperation {
+ public:
+  explicit NumericIncrementTransform(
+      nanopb::Message<google_firestore_v1_Value> operand);
+
+  /**
+   * Casts a TransformOperation to a NumericIncrementTransform. This is a
+   * checked operation that will assert if the type of the TransformOperation
+   * isn't actually Type::Increment.
+   */
+  explicit NumericIncrementTransform(const TransformOperation& op);
+
+  const google_firestore_v1_Value& operand() const;
+
+ private:
+  class Rep;
+};
+
+/** Returns whether the two are not equal. */
+inline bool operator!=(const TransformOperation& lhs,
+                       const TransformOperation& rhs) {
+  return !(lhs == rhs);
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_TRANSFORM_OPERATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/types.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/types.h
new file mode 100644
index 0000000..5f70c9b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/types.h	
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_TYPES_H_
+#define FIRESTORE_CORE_SRC_MODEL_TYPES_H_
+
+#include <cstdint>
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+/**
+ * BatchId is a locally assigned identifier for a batch of mutations that have
+ * been applied by the user but have not yet been fully committed at the server.
+ */
+using BatchId = int32_t;
+
+/**
+ * A sequence number that's incremented on each "interesting" action in the
+ * local store that establishes the order in which items can be garbage
+ * collected.
+ */
+using ListenSequenceNumber = int64_t;
+
+/**
+ * TargetId is a stable numeric identifier assigned for a specific query
+ * applied.
+ */
+using TargetId = int32_t;
+
+/**
+ * Describes the online state of the Firestore client. Note that this does not
+ * indicate whether or not the remote store is trying to connect or not. This is
+ * primarily used by the View / EventManager code to change their behavior while
+ * offline (e.g. get() calls shouldn't wait for data from the server and
+ * snapshot events should set metadata.from_cache() to true).
+ */
+enum class OnlineState {
+  /**
+   * The Firestore client is in an unknown online state. This means the client
+   * is either not actively trying to establish a connection or it is currently
+   * trying to establish a connection, but it has not succeeded or failed yet.
+   * Higher-level components should not operate in offline mode.
+   */
+  Unknown,
+
+  /**
+   * The client is connected and the connections are healthy. This state is
+   * reached after a successful connection and there has been at least one
+   * successful message received from the backends.
+   */
+  Online,
+
+  /**
+   * The client is either trying to establish a connection but failing, or it
+   * has been explicitly marked offline via a call to `DisableNetwork`.
+   * Higher-level components should operate in offline mode.
+   */
+  Offline
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_TYPES_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.cc
new file mode 100644
index 0000000..70659b7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.cc	
@@ -0,0 +1,598 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/value_util.h"
+
+#include <algorithm>
+#include <cmath>
+#include <limits>
+#include <memory>
+#include <vector>
+
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/server_timestamp_util.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/comparison.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/str_format.h"
+#include "absl/strings/str_join.h"
+#include "absl/strings/str_split.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+using nanopb::Message;
+using util::ComparisonResult;
+
+TypeOrder GetTypeOrder(const google_firestore_v1_Value& value) {
+  switch (value.which_value_type) {
+    case google_firestore_v1_Value_null_value_tag:
+      return TypeOrder::kNull;
+
+    case google_firestore_v1_Value_boolean_value_tag:
+      return TypeOrder::kBoolean;
+
+    case google_firestore_v1_Value_integer_value_tag:
+    case google_firestore_v1_Value_double_value_tag:
+      return TypeOrder::kNumber;
+
+    case google_firestore_v1_Value_timestamp_value_tag:
+      return TypeOrder::kTimestamp;
+
+    case google_firestore_v1_Value_string_value_tag:
+      return TypeOrder::kString;
+
+    case google_firestore_v1_Value_bytes_value_tag:
+      return TypeOrder::kBlob;
+
+    case google_firestore_v1_Value_reference_value_tag:
+      return TypeOrder::kReference;
+
+    case google_firestore_v1_Value_geo_point_value_tag:
+      return TypeOrder::kGeoPoint;
+
+    case google_firestore_v1_Value_array_value_tag:
+      return TypeOrder::kArray;
+
+    case google_firestore_v1_Value_map_value_tag: {
+      if (IsServerTimestamp(value)) {
+        return TypeOrder::kServerTimestamp;
+      }
+      return TypeOrder::kMap;
+    }
+
+    default:
+      HARD_FAIL("Invalid type value: %s", value.which_value_type);
+  }
+}
+
+void SortFields(google_firestore_v1_ArrayValue& value) {
+  for (pb_size_t i = 0; i < value.values_count; ++i) {
+    SortFields(value.values[i]);
+  }
+}
+
+void SortFields(google_firestore_v1_Value& value) {
+  if (IsMap(value)) {
+    google_firestore_v1_MapValue& map_value = value.map_value;
+    std::sort(map_value.fields, map_value.fields + map_value.fields_count,
+              [](const google_firestore_v1_MapValue_FieldsEntry& lhs,
+                 const google_firestore_v1_MapValue_FieldsEntry& rhs) {
+                return nanopb::MakeStringView(lhs.key) <
+                       nanopb::MakeStringView(rhs.key);
+              });
+
+    for (pb_size_t i = 0; i < map_value.fields_count; ++i) {
+      SortFields(map_value.fields[i].value);
+    }
+  } else if (IsArray(value)) {
+    SortFields(value.array_value);
+  }
+}
+
+ComparisonResult CompareNumbers(const google_firestore_v1_Value& left,
+                                const google_firestore_v1_Value& right) {
+  if (left.which_value_type == google_firestore_v1_Value_double_value_tag) {
+    double left_double = left.double_value;
+    if (right.which_value_type == google_firestore_v1_Value_double_value_tag) {
+      return util::Compare(left_double, right.double_value);
+    } else {
+      return util::CompareMixedNumber(left_double, right.integer_value);
+    }
+  } else {
+    int64_t left_long = left.integer_value;
+    if (right.which_value_type == google_firestore_v1_Value_integer_value_tag) {
+      return util::Compare(left_long, right.integer_value);
+    } else {
+      return util::ReverseOrder(
+          util::CompareMixedNumber(right.double_value, left_long));
+    }
+  }
+}
+
+ComparisonResult CompareTimestamps(const google_protobuf_Timestamp& left,
+                                   const google_protobuf_Timestamp& right) {
+  ComparisonResult cmp = util::Compare(left.seconds, right.seconds);
+  if (cmp != ComparisonResult::Same) {
+    return cmp;
+  }
+  return util::Compare(left.nanos, right.nanos);
+}
+
+ComparisonResult CompareStrings(const google_firestore_v1_Value& left,
+                                const google_firestore_v1_Value& right) {
+  absl::string_view left_string = nanopb::MakeStringView(left.string_value);
+  absl::string_view right_string = nanopb::MakeStringView(right.string_value);
+  return util::Compare(left_string, right_string);
+}
+
+ComparisonResult CompareBlobs(const google_firestore_v1_Value& left,
+                              const google_firestore_v1_Value& right) {
+  if (left.bytes_value && right.bytes_value) {
+    size_t size = std::min(left.bytes_value->size, right.bytes_value->size);
+    int cmp =
+        std::memcmp(left.bytes_value->bytes, right.bytes_value->bytes, size);
+    return cmp != 0
+               ? util::ComparisonResultFromInt(cmp)
+               : util::Compare(left.bytes_value->size, right.bytes_value->size);
+  } else {
+    // An empty blob is represented by a nullptr (or an empty byte array)
+    return util::Compare(
+        !(left.bytes_value == nullptr || left.bytes_value->size == 0),
+        !(right.bytes_value == nullptr || right.bytes_value->size == 0));
+  }
+}
+
+ComparisonResult CompareReferences(const google_firestore_v1_Value& left,
+                                   const google_firestore_v1_Value& right) {
+  std::vector<std::string> left_segments = absl::StrSplit(
+      nanopb::MakeStringView(left.reference_value), '/', absl::SkipEmpty());
+  std::vector<std::string> right_segments = absl::StrSplit(
+      nanopb::MakeStringView(right.reference_value), '/', absl::SkipEmpty());
+
+  size_t min_length = std::min(left_segments.size(), right_segments.size());
+  for (size_t i = 0; i < min_length; ++i) {
+    ComparisonResult cmp = util::Compare(left_segments[i], right_segments[i]);
+    if (cmp != ComparisonResult::Same) {
+      return cmp;
+    }
+  }
+  return util::Compare(left_segments.size(), right_segments.size());
+}
+
+ComparisonResult CompareGeoPoints(const google_firestore_v1_Value& left,
+                                  const google_firestore_v1_Value& right) {
+  ComparisonResult cmp = util::Compare(left.geo_point_value.latitude,
+                                       right.geo_point_value.latitude);
+  if (cmp != ComparisonResult::Same) {
+    return cmp;
+  }
+  return util::Compare(left.geo_point_value.longitude,
+                       right.geo_point_value.longitude);
+}
+
+ComparisonResult CompareArrays(const google_firestore_v1_Value& left,
+                               const google_firestore_v1_Value& right) {
+  int min_length =
+      std::min(left.array_value.values_count, right.array_value.values_count);
+  for (int i = 0; i < min_length; ++i) {
+    ComparisonResult cmp =
+        Compare(left.array_value.values[i], right.array_value.values[i]);
+    if (cmp != ComparisonResult::Same) {
+      return cmp;
+    }
+  }
+  return util::Compare(left.array_value.values_count,
+                       right.array_value.values_count);
+}
+
+ComparisonResult CompareObjects(const google_firestore_v1_Value& left,
+                                const google_firestore_v1_Value& right) {
+  google_firestore_v1_MapValue left_map = left.map_value;
+  google_firestore_v1_MapValue right_map = right.map_value;
+
+  // Porting Note: MapValues in iOS are always kept in sorted order. We
+  // therefore do no need to sort them before comparing.
+  for (pb_size_t i = 0; i < left_map.fields_count && i < right_map.fields_count;
+       ++i) {
+    ComparisonResult key_cmp =
+        util::Compare(nanopb::MakeStringView(left_map.fields[i].key),
+                      nanopb::MakeStringView(right_map.fields[i].key));
+    if (key_cmp != ComparisonResult::Same) {
+      return key_cmp;
+    }
+
+    ComparisonResult value_cmp =
+        Compare(left_map.fields[i].value, right.map_value.fields[i].value);
+    if (value_cmp != ComparisonResult::Same) {
+      return value_cmp;
+    }
+  }
+
+  return util::Compare(left_map.fields_count, right_map.fields_count);
+}
+
+ComparisonResult Compare(const google_firestore_v1_Value& left,
+                         const google_firestore_v1_Value& right) {
+  TypeOrder left_type = GetTypeOrder(left);
+  TypeOrder right_type = GetTypeOrder(right);
+
+  if (left_type != right_type) {
+    return util::Compare(left_type, right_type);
+  }
+
+  switch (left_type) {
+    case TypeOrder::kNull:
+      return ComparisonResult::Same;
+
+    case TypeOrder::kBoolean:
+      return util::Compare(left.boolean_value, right.boolean_value);
+
+    case TypeOrder::kNumber:
+      return CompareNumbers(left, right);
+
+    case TypeOrder::kTimestamp:
+      return CompareTimestamps(left.timestamp_value, right.timestamp_value);
+
+    case TypeOrder::kServerTimestamp:
+      return CompareTimestamps(GetLocalWriteTime(left),
+                               GetLocalWriteTime(right));
+
+    case TypeOrder::kString:
+      return CompareStrings(left, right);
+
+    case TypeOrder::kBlob:
+      return CompareBlobs(left, right);
+
+    case TypeOrder::kReference:
+      return CompareReferences(left, right);
+
+    case TypeOrder::kGeoPoint:
+      return CompareGeoPoints(left, right);
+
+    case TypeOrder::kArray:
+      return CompareArrays(left, right);
+
+    case TypeOrder::kMap:
+      return CompareObjects(left, right);
+
+    default:
+      HARD_FAIL("Invalid type value: %s", left_type);
+  }
+}
+
+bool NumberEquals(const google_firestore_v1_Value& left,
+                  const google_firestore_v1_Value& right) {
+  if (left.which_value_type == google_firestore_v1_Value_integer_value_tag &&
+      right.which_value_type == google_firestore_v1_Value_integer_value_tag) {
+    return left.integer_value == right.integer_value;
+  } else if (left.which_value_type ==
+                 google_firestore_v1_Value_double_value_tag &&
+             right.which_value_type ==
+                 google_firestore_v1_Value_double_value_tag) {
+    return util::DoubleBitwiseEquals(left.double_value, right.double_value);
+  }
+  return false;
+}
+
+bool ArrayEquals(const google_firestore_v1_ArrayValue& left,
+                 const google_firestore_v1_ArrayValue& right) {
+  if (left.values_count != right.values_count) {
+    return false;
+  }
+
+  for (size_t i = 0; i < left.values_count; ++i) {
+    if (left.values[i] != right.values[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool ObjectEquals(const google_firestore_v1_MapValue& left,
+                  const google_firestore_v1_MapValue& right) {
+  if (left.fields_count != right.fields_count) {
+    return false;
+  }
+
+  // Porting Note: MapValues in iOS are always kept in sorted order. We
+  // therefore do no need to sort them before comparing.
+  for (size_t i = 0; i < right.fields_count; ++i) {
+    if (nanopb::MakeStringView(left.fields[i].key) !=
+        nanopb::MakeStringView(right.fields[i].key)) {
+      return false;
+    }
+
+    if (left.fields[i].value != right.fields[i].value) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool Equals(const google_firestore_v1_Value& lhs,
+            const google_firestore_v1_Value& rhs) {
+  TypeOrder left_type = GetTypeOrder(lhs);
+  TypeOrder right_type = GetTypeOrder(rhs);
+  if (left_type != right_type) {
+    return false;
+  }
+
+  switch (left_type) {
+    case TypeOrder::kNull:
+      return true;
+
+    case TypeOrder::kBoolean:
+      return lhs.boolean_value == rhs.boolean_value;
+
+    case TypeOrder::kNumber:
+      return NumberEquals(lhs, rhs);
+
+    case TypeOrder::kTimestamp:
+      return lhs.timestamp_value.seconds == rhs.timestamp_value.seconds &&
+             lhs.timestamp_value.nanos == rhs.timestamp_value.nanos;
+
+    case TypeOrder::kServerTimestamp: {
+      const auto& left_ts = GetLocalWriteTime(lhs);
+      const auto& right_ts = GetLocalWriteTime(rhs);
+      return left_ts.seconds == right_ts.seconds &&
+             left_ts.nanos == right_ts.nanos;
+    }
+
+    case TypeOrder::kString:
+      return nanopb::MakeStringView(lhs.string_value) ==
+             nanopb::MakeStringView(rhs.string_value);
+
+    case TypeOrder::kBlob:
+      return CompareBlobs(lhs, rhs) == ComparisonResult::Same;
+
+    case TypeOrder::kReference:
+      return nanopb::MakeStringView(lhs.reference_value) ==
+             nanopb::MakeStringView(rhs.reference_value);
+
+    case TypeOrder::kGeoPoint:
+      return lhs.geo_point_value.latitude == rhs.geo_point_value.latitude &&
+             lhs.geo_point_value.longitude == rhs.geo_point_value.longitude;
+
+    case TypeOrder::kArray:
+      return ArrayEquals(lhs.array_value, rhs.array_value);
+
+    case TypeOrder::kMap:
+      return ObjectEquals(lhs.map_value, rhs.map_value);
+
+    default:
+      HARD_FAIL("Invalid type value: %s", left_type);
+  }
+}
+
+bool Equals(const google_firestore_v1_ArrayValue& lhs,
+            const google_firestore_v1_ArrayValue& rhs) {
+  return ArrayEquals(lhs, rhs);
+}
+
+std::string CanonifyTimestamp(const google_firestore_v1_Value& value) {
+  return absl::StrFormat("time(%d,%d)", value.timestamp_value.seconds,
+                         value.timestamp_value.nanos);
+}
+
+std::string CanonifyBlob(const google_firestore_v1_Value& value) {
+  return absl::BytesToHexString(nanopb::MakeStringView(value.bytes_value));
+}
+
+std::string CanonifyReference(const google_firestore_v1_Value& value) {
+  std::vector<std::string> segments = absl::StrSplit(
+      nanopb::MakeStringView(value.reference_value), '/', absl::SkipEmpty());
+  HARD_ASSERT(segments.size() >= 5,
+              "Reference values should have at least 5 components");
+  return absl::StrJoin(segments.begin() + 5, segments.end(), "/");
+}
+
+std::string CanonifyGeoPoint(const google_firestore_v1_Value& value) {
+  return absl::StrFormat("geo(%.1f,%.1f)", value.geo_point_value.latitude,
+                         value.geo_point_value.longitude);
+}
+
+std::string CanonifyArray(const google_firestore_v1_ArrayValue& array_value) {
+  std::string result = "[";
+  for (size_t i = 0; i < array_value.values_count; ++i) {
+    absl::StrAppend(&result, CanonicalId(array_value.values[i]));
+    if (i != array_value.values_count - 1) {
+      absl::StrAppend(&result, ",");
+    }
+  }
+  result += "]";
+  return result;
+}
+
+std::string CanonifyObject(const google_firestore_v1_Value& value) {
+  pb_size_t fields_count = value.map_value.fields_count;
+  const auto& fields = value.map_value.fields;
+
+  // Porting Note: MapValues in iOS are always kept in sorted order. We
+  // therefore do no need to sort them before generating the canonical ID.
+  std::string result = "{";
+  for (pb_size_t i = 0; i < fields_count; ++i) {
+    absl::StrAppend(&result, nanopb::MakeStringView(fields[i].key), ":",
+                    CanonicalId(fields[i].value));
+    if (i != fields_count - 1) {
+      absl::StrAppend(&result, ",");
+    }
+  }
+  result += "}";
+
+  return result;
+}
+
+std::string CanonicalId(const google_firestore_v1_Value& value) {
+  switch (value.which_value_type) {
+    case google_firestore_v1_Value_null_value_tag:
+      return "null";
+
+    case google_firestore_v1_Value_boolean_value_tag:
+      return value.boolean_value ? "true" : "false";
+
+    case google_firestore_v1_Value_integer_value_tag:
+      return std::to_string(value.integer_value);
+
+    case google_firestore_v1_Value_double_value_tag:
+      return absl::StrFormat("%.1f", value.double_value);
+
+    case google_firestore_v1_Value_timestamp_value_tag:
+      return CanonifyTimestamp(value);
+
+    case google_firestore_v1_Value_string_value_tag:
+      return nanopb::MakeString(value.string_value);
+
+    case google_firestore_v1_Value_bytes_value_tag:
+      return CanonifyBlob(value);
+
+    case google_firestore_v1_Value_reference_value_tag:
+      return CanonifyReference(value);
+
+    case google_firestore_v1_Value_geo_point_value_tag:
+      return CanonifyGeoPoint(value);
+
+    case google_firestore_v1_Value_array_value_tag:
+      return CanonifyArray(value.array_value);
+
+    case google_firestore_v1_Value_map_value_tag: {
+      return CanonifyObject(value);
+    }
+
+    default:
+      HARD_FAIL("Invalid type value: %s", value.which_value_type);
+  }
+}
+
+std::string CanonicalId(const google_firestore_v1_ArrayValue& value) {
+  return CanonifyArray(value);
+}
+
+bool Contains(google_firestore_v1_ArrayValue haystack,
+              google_firestore_v1_Value needle) {
+  for (pb_size_t i = 0; i < haystack.values_count; ++i) {
+    if (Equals(haystack.values[i], needle)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+Message<google_firestore_v1_Value> NullValue() {
+  Message<google_firestore_v1_Value> null_value;
+  null_value->which_value_type = google_firestore_v1_Value_null_value_tag;
+  null_value->null_value = {};
+  return null_value;
+}
+
+bool IsNullValue(const google_firestore_v1_Value& value) {
+  return value.which_value_type == google_firestore_v1_Value_null_value_tag;
+}
+
+Message<google_firestore_v1_Value> NaNValue() {
+  Message<google_firestore_v1_Value> nan_value;
+  nan_value->which_value_type = google_firestore_v1_Value_double_value_tag;
+  nan_value->double_value = std::numeric_limits<double>::quiet_NaN();
+  return nan_value;
+}
+
+bool IsNaNValue(const google_firestore_v1_Value& value) {
+  return value.which_value_type == google_firestore_v1_Value_double_value_tag &&
+         std::isnan(value.double_value);
+}
+
+Message<google_firestore_v1_Value> RefValue(
+    const model::DatabaseId& database_id,
+    const model::DocumentKey& document_key) {
+  Message<google_firestore_v1_Value> result;
+  result->which_value_type = google_firestore_v1_Value_reference_value_tag;
+  result->string_value = nanopb::MakeBytesArray(util::StringFormat(
+      "projects/%s/databases/%s/documents/%s", database_id.project_id(),
+      database_id.database_id(), document_key.ToString()));
+  return result;
+}
+
+Message<google_firestore_v1_Value> DeepClone(
+    const google_firestore_v1_Value& source) {
+  Message<google_firestore_v1_Value> target{source};
+  switch (source.which_value_type) {
+    case google_firestore_v1_Value_string_value_tag:
+      target->string_value =
+          source.string_value
+              ? nanopb::MakeBytesArray(source.string_value->bytes,
+                                       source.string_value->size)
+              : nullptr;
+      break;
+
+    case google_firestore_v1_Value_reference_value_tag:
+      target->reference_value = nanopb::MakeBytesArray(
+          source.reference_value->bytes, source.reference_value->size);
+      break;
+
+    case google_firestore_v1_Value_bytes_value_tag:
+      target->bytes_value =
+          source.bytes_value ? nanopb::MakeBytesArray(source.bytes_value->bytes,
+                                                      source.bytes_value->size)
+                             : nullptr;
+      break;
+
+    case google_firestore_v1_Value_array_value_tag:
+      target->array_value.values_count = source.array_value.values_count;
+      target->array_value.values = nanopb::MakeArray<google_firestore_v1_Value>(
+          source.array_value.values_count);
+      for (pb_size_t i = 0; i < source.array_value.values_count; ++i) {
+        target->array_value.values[i] =
+            *DeepClone(source.array_value.values[i]).release();
+      }
+      break;
+
+    case google_firestore_v1_Value_map_value_tag:
+      target->map_value.fields_count = source.map_value.fields_count;
+      target->map_value.fields =
+          nanopb::MakeArray<google_firestore_v1_MapValue_FieldsEntry>(
+              source.map_value.fields_count);
+      for (pb_size_t i = 0; i < source.map_value.fields_count; ++i) {
+        target->map_value.fields[i].key =
+            nanopb::MakeBytesArray(source.map_value.fields[i].key->bytes,
+                                   source.map_value.fields[i].key->size);
+        target->map_value.fields[i].value =
+            *DeepClone(source.map_value.fields[i].value).release();
+      }
+      break;
+  }
+  return target;
+}
+
+Message<google_firestore_v1_ArrayValue> DeepClone(
+    const google_firestore_v1_ArrayValue& source) {
+  Message<google_firestore_v1_ArrayValue> target{source};
+  target->values_count = source.values_count;
+  target->values =
+      nanopb::MakeArray<google_firestore_v1_Value>(source.values_count);
+  for (pb_size_t i = 0; i < source.values_count; ++i) {
+    target->values[i] = *DeepClone(source.values[i]).release();
+  }
+  return target;
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.h
new file mode 100644
index 0000000..24328ab
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/value_util.h	
@@ -0,0 +1,175 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_VALUE_UTIL_H_
+#define FIRESTORE_CORE_SRC_MODEL_VALUE_UTIL_H_
+
+#include <ostream>
+#include <string>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace util {
+enum class ComparisonResult;
+}
+
+namespace model {
+
+class DocumentKey;
+class DatabaseId;
+
+/**
+ * The order of types in Firestore. This order is based on the backend's
+ * ordering, but modified to support server timestamps.
+ */
+enum class TypeOrder {
+  kNull = 0,
+  kBoolean = 1,
+  kNumber = 2,
+  kTimestamp = 3,
+  kServerTimestamp = 4,
+  kString = 5,
+  kBlob = 6,
+  kReference = 7,
+  kGeoPoint = 8,
+  kArray = 9,
+  kMap = 10
+};
+
+/** Returns the backend's type order of the given Value type. */
+TypeOrder GetTypeOrder(const google_firestore_v1_Value& value);
+
+/** Traverses a Value proto and sorts all MapValues by key. */
+void SortFields(google_firestore_v1_Value& value);
+
+/** Traverses an ArrayValue proto and sorts all MapValues by key. */
+void SortFields(google_firestore_v1_ArrayValue& value);
+
+util::ComparisonResult Compare(const google_firestore_v1_Value& left,
+                               const google_firestore_v1_Value& right);
+
+bool Equals(const google_firestore_v1_Value& left,
+            const google_firestore_v1_Value& right);
+
+bool Equals(const google_firestore_v1_ArrayValue& left,
+            const google_firestore_v1_ArrayValue& right);
+
+/**
+ * Generates the canonical ID for the provided field value (as used in Target
+ * serialization).
+ */
+std::string CanonicalId(const google_firestore_v1_Value& value);
+
+/**
+ * Generates the canonical ID for the provided array value (as used in Target
+ * serialization).
+ */
+std::string CanonicalId(const google_firestore_v1_ArrayValue& value);
+
+/** Returns true if the array value contains the specified element. */
+bool Contains(google_firestore_v1_ArrayValue haystack,
+              google_firestore_v1_Value needle);
+
+/** Returns a null Protobuf value. */
+nanopb::Message<google_firestore_v1_Value> NullValue();
+
+/** Returns `true` if `value` is null in its Protobuf representation. */
+bool IsNullValue(const google_firestore_v1_Value& value);
+
+/** Returns `NaN` in its Protobuf representation. */
+nanopb::Message<google_firestore_v1_Value> NaNValue();
+
+/** Returns `true` if `value` is `NaN` in its Protobuf representation. */
+bool IsNaNValue(const google_firestore_v1_Value& value);
+
+/** Returns a Protobuf reference value representing the given location. */
+nanopb::Message<google_firestore_v1_Value> RefValue(
+    const DatabaseId& database_id, const DocumentKey& document_key);
+
+/** Creates a copy of the contents of the Value proto. */
+nanopb::Message<google_firestore_v1_Value> DeepClone(
+    const google_firestore_v1_Value& source);
+
+/** Creates a copy of the contents of the ArrayValue proto. */
+nanopb::Message<google_firestore_v1_ArrayValue> DeepClone(
+    const google_firestore_v1_ArrayValue& source);
+
+/** Returns true if `value` is a INTEGER_VALUE. */
+inline bool IsInteger(const absl::optional<google_firestore_v1_Value>& value) {
+  return value &&
+         value->which_value_type == google_firestore_v1_Value_integer_value_tag;
+}
+
+/** Returns true if `value` is a DOUBLE_VALUE. */
+inline bool IsDouble(const absl::optional<google_firestore_v1_Value>& value) {
+  return value &&
+         value->which_value_type == google_firestore_v1_Value_double_value_tag;
+}
+
+/** Returns true if `value` is either a INTEGER_VALUE or a DOUBLE_VALUE. */
+inline bool IsNumber(const absl::optional<google_firestore_v1_Value>& value) {
+  return IsInteger(value) || IsDouble(value);
+}
+
+/** Returns true if `value` is an ARRAY_VALUE. */
+inline bool IsArray(const absl::optional<google_firestore_v1_Value>& value) {
+  return value &&
+         value->which_value_type == google_firestore_v1_Value_array_value_tag;
+}
+
+/** Returns true if `value` is a MAP_VALUE. */
+inline bool IsMap(const absl::optional<google_firestore_v1_Value>& value) {
+  return value &&
+         value->which_value_type == google_firestore_v1_Value_map_value_tag;
+}
+
+}  // namespace model
+
+inline bool operator==(const google_firestore_v1_Value& lhs,
+                       const google_firestore_v1_Value& rhs) {
+  return model::Equals(lhs, rhs);
+}
+
+inline bool operator!=(const google_firestore_v1_Value& lhs,
+                       const google_firestore_v1_Value& rhs) {
+  return !model::Equals(lhs, rhs);
+}
+
+inline bool operator==(const google_firestore_v1_ArrayValue& lhs,
+                       const google_firestore_v1_ArrayValue& rhs) {
+  return model::Equals(lhs, rhs);
+}
+
+inline bool operator!=(const google_firestore_v1_ArrayValue& lhs,
+                       const google_firestore_v1_ArrayValue& rhs) {
+  return !model::Equals(lhs, rhs);
+}
+
+inline std::ostream& operator<<(std::ostream& out,
+                                const google_firestore_v1_Value& value) {
+  return out << model::CanonicalId(value);
+}
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_VALUE_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.cc
new file mode 100644
index 0000000..456e606
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.cc	
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/model/verify_mutation.h"
+
+#include <utility>
+
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+static_assert(
+    sizeof(Mutation) == sizeof(VerifyMutation),
+    "VerifyMutation may not have additional members (everything goes in Rep)");
+
+VerifyMutation::VerifyMutation(DocumentKey key, Precondition precondition)
+    : Mutation(std::make_shared<Rep>(std::move(key), std::move(precondition))) {
+}
+
+VerifyMutation::VerifyMutation(const Mutation& mutation) : Mutation(mutation) {
+  HARD_ASSERT(type() == Type::Verify);
+}
+
+void VerifyMutation::Rep::ApplyToRemoteDocument(MutableDocument&,
+                                                const MutationResult&) const {
+  HARD_FAIL("VerifyMutation should only be used in Transactions.");
+}
+
+void VerifyMutation::Rep::ApplyToLocalView(MutableDocument&,
+                                           const Timestamp&) const {
+  HARD_FAIL("VerifyMutation should only be used in Transactions.");
+}
+
+std::string VerifyMutation::Rep::ToString() const {
+  return absl::StrCat("VerifyMutation(key=", key().ToString(),
+                      ", precondition=", precondition().ToString(), ")");
+}
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.h
new file mode 100644
index 0000000..778ba8f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/model/verify_mutation.h	
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_MODEL_VERIFY_MUTATION_H_
+#define FIRESTORE_CORE_SRC_MODEL_VERIFY_MUTATION_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/precondition.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace model {
+
+class MutableDocument;
+
+/**
+ * A mutation that verifies the existence of the document at the given key
+ * with the provided precondition.
+ *
+ * The `verify` operation is only used in Transactions, and this class serves
+ * primarily to facilitate serialization into protos.
+ */
+class VerifyMutation : public Mutation {
+ public:
+  VerifyMutation(DocumentKey key, Precondition precondition);
+
+  /**
+   * Casts a Mutation to a VerifyMutation. This is a checked operation that will
+   * assert if the type of the Mutation isn't actually Type::Verify.
+   */
+  explicit VerifyMutation(const Mutation& mutation);
+
+  /** Creates an invalid VerifyMutation instance. */
+  VerifyMutation() = default;
+
+ private:
+  class Rep : public Mutation::Rep {
+   public:
+    using Mutation::Rep::Rep;
+
+    Type type() const override {
+      return Type::Verify;
+    }
+
+    void ApplyToRemoteDocument(
+        MutableDocument& document,
+        const MutationResult& mutation_result) const override;
+
+    void ApplyToLocalView(MutableDocument& document,
+                          const Timestamp&) const override;
+
+    // Does not override Equals or Hash; Mutation's versions are sufficient.
+
+    std::string ToString() const override;
+  };
+};
+
+}  // namespace model
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_MODEL_VERIFY_MUTATION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.cc
new file mode 100644
index 0000000..2d4d967
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.cc	
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+
+#include <cctype>
+#include <cstdlib>
+#include <cstring>
+#include <iomanip>
+#include <ostream>
+#include <sstream>
+
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/range.h"
+#include "absl/strings/escaping.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+ByteString::ByteString(const pb_bytes_array_t* bytes) {
+  if (bytes != nullptr) {
+    bytes_ = MakeBytesArray(bytes->bytes, bytes->size);
+  }
+}
+
+ByteString::ByteString(const void* value, size_t size)
+    : bytes_(MakeBytesArray(value, size)) {
+}
+
+ByteString::ByteString(absl::string_view value)
+    : ByteString(value.data(), value.size()) {
+}
+
+ByteString::ByteString(std::initializer_list<uint8_t> value)
+    : ByteString(value.begin(), value.size()) {
+}
+
+ByteString::ByteString(const ByteString& other)
+    : ByteString(other.data(), other.size()) {
+}
+
+ByteString::ByteString(ByteString&& other) noexcept {
+  bytes_ = other.bytes_;
+  other.bytes_ = nullptr;
+}
+
+ByteString::~ByteString() {
+  std::free(bytes_);
+}
+
+ByteString& ByteString::operator=(const ByteString& other) {
+  if (bytes_ != other.bytes_) {
+    std::free(bytes_);
+    bytes_ = MakeBytesArray(other.data(), other.size());
+  }
+  return *this;
+}
+
+ByteString& ByteString::operator=(ByteString&& other) noexcept {
+  if (bytes_ != other.bytes_) {
+    std::free(bytes_);
+    bytes_ = other.bytes_;
+    other.bytes_ = nullptr;
+  }
+  return *this;
+}
+
+/* static */ ByteString ByteString::Take(pb_bytes_array_t* bytes) {
+  return ByteString{bytes, 0};
+}
+
+const uint8_t* ByteString::data() const {
+  static const uint8_t kEmpty[] = "";
+  return bytes_ ? bytes_->bytes : kEmpty;
+}
+
+pb_bytes_array_t* ByteString::release() {
+  pb_bytes_array_t* result = bytes_;
+  bytes_ = nullptr;
+  return result;
+}
+
+void swap(ByteString& lhs, ByteString& rhs) noexcept {
+  std::swap(lhs.bytes_, rhs.bytes_);
+}
+
+util::ComparisonResult ByteString::CompareTo(const ByteString& rhs) const {
+  return util::Compare(MakeStringView(*this), MakeStringView(rhs));
+}
+
+size_t ByteString::Hash() const {
+  return util::Hash(util::make_range(begin(), end()));
+}
+
+std::string ByteString::ToString() const {
+  return absl::CEscape(MakeStringView(*this));
+}
+
+std::ostream& operator<<(std::ostream& out, const ByteString& str) {
+  return out << str.ToString();
+}
+
+std::string ByteString::ToHexString() const {
+  std::string hex = absl::BytesToHexString(MakeStringView(*this));
+  return absl::StrCat("<", hex, ">");
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.h
new file mode 100644
index 0000000..a1f164d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/byte_string.h	
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_BYTE_STRING_H_
+#define FIRESTORE_CORE_SRC_NANOPB_BYTE_STRING_H_
+
+#include <pb.h>
+
+#include <cstdint>
+#include <initializer_list>
+#include <iosfwd>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/comparison.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * An immutable string-like object backed by a nanopb byte array. `ByteString`
+ * owns its memory, has deep copy semantics, and creates a copy of any input
+ * given to its constructors.
+ *
+ * `ByteString` is similar in spirit to `com.google.protobuf.ByteString`. It
+ * serves mostly the same purpose: it's a holder of a byte array that's
+ * compatible with the proto marshaling layer.
+ *
+ * Unlike protobuf's `ByteString`, nanopb doesn't supply this class so this
+ * class additionally makes it possible to cheaply translate to and from raw
+ * `pb_bytes_array_t*` values. `ByteString` allows taking values directly from
+ * nanopb messages and avoids copying while doing so.
+ */
+class ByteString : public util::Comparable<ByteString> {
+ public:
+  ByteString() = default;
+
+  /**
+   * Creates a new `ByteString` that copies the given bytes.
+   */
+  explicit ByteString(const pb_bytes_array_t* bytes);
+
+  /**
+   * Creates a new `ByteString` whose backing byte array is a copy of the given
+   * bytes.
+   */
+  ByteString(const void* value, size_t size);
+
+  /**
+   * Creates a new `ByteString` whose backing byte array is a copy of the given
+   * string_view.
+   */
+  explicit ByteString(absl::string_view value);
+
+  ByteString(std::initializer_list<uint8_t> value);
+
+  ByteString(const ByteString& other);
+
+  ByteString(ByteString&& other) noexcept;
+
+  ~ByteString();
+
+  ByteString& operator=(const ByteString& other);
+  ByteString& operator=(ByteString&& other) noexcept;
+
+  friend void swap(ByteString& lhs, ByteString& rhs) noexcept;
+
+  /**
+   * Creates a new `ByteString` that takes ownership of the given byte array. If
+   * taking from a nanopb-created message struct, the caller should null out
+   * the pointer there so that pb_release won't free the buffer that the
+   * returned `ByteString` now owns.
+   */
+  static ByteString Take(pb_bytes_array_t* bytes);
+
+  /**
+   * Returns a pointer to the character data backing this `ByteString`. The
+   * returned buffer is always non-null, even if the nanopb byte array is null.
+   */
+  const uint8_t* data() const;
+
+  size_t size() const {
+    return bytes_ ? bytes_->size : 0;
+  }
+
+  bool empty() const {
+    return bytes_ == nullptr || bytes_->size == 0;
+  }
+
+  const uint8_t* begin() const {
+    return data();
+  }
+
+  const uint8_t* end() const {
+    return data() + size();
+  }
+
+  /**
+   * Returns a const view of the raw underlying byte array pointer.
+   *
+   * This value may be null because nanopb (and protobuf generally) treat null
+   * and empty byte arrays as equivalent.
+   *
+   * For actually reading the data in the buffer, prefer `data()` and `size()`
+   * or `begin()` and `end()`, which handle this nullability for you.
+   */
+  const pb_bytes_array_t* get() const {
+    return bytes_;
+  }
+
+  /**
+   * Releases ownership of the backing byte array, and returns it to the caller.
+   * The backing byte array is set to null.
+   *
+   * This value may be null because nanopb (and protobuf generally) treat null
+   * and empty byte arrays as equivalent. Assigning a null value to a nanopb
+   * message field will be treated as empty.
+   */
+  pb_bytes_array_t* release();
+
+  /**
+   * Performs a lexicographical comparison between this and the other bytes.
+   */
+  util::ComparisonResult CompareTo(const ByteString& rhs) const;
+
+  size_t Hash() const;
+
+  // Interprets the value as an ASCII string; the way control characters are
+  // represented is implementation-defined.
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& out, const ByteString& str);
+
+  // Represents the value as hexadecimal values.
+  std::string ToHexString() const;
+
+ private:
+  /**
+   * Private constructor directly assigns to bytes_. The extra integer tag
+   * helps disambiguate this constructor from the public constructor that takes
+   * `const pb_bytes_array_t*`.
+   */
+  explicit ByteString(pb_bytes_array_t* bytes, int) : bytes_{bytes} {
+  }
+
+  pb_bytes_array_t* bytes_ = nullptr;
+};
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_BYTE_STRING_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/fields_array.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/fields_array.h
new file mode 100644
index 0000000..15849d4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/fields_array.h	
@@ -0,0 +1,191 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_FIELDS_ARRAY_H_
+#define FIRESTORE_CORE_SRC_NANOPB_FIELDS_ARRAY_H_
+
+#include "Firestore/Protos/nanopb/firestore/bundle.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/maybe_document.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h"
+#include "Firestore/Protos/nanopb/firestore/local/target.nanopb.h"
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h"
+#include "Firestore/Protos/nanopb/google/type/latlng.nanopb.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * Returns a pointer to the Nanopb-generated array that describes the fields
+ * of the Nanopb proto; the array is required to call most Nanopb functions.
+ *
+ * There is always a one-to-one correspondence between a Nanopb-generated
+ * message type and its fields descriptor; essentially, the fields descriptor is
+ * a property of the type.
+ */
+// The non-specialized version of this function is deleted to make sure that
+// forgetting to specialize it results in a compile-time-, not link-time error.
+// If you run into an error where compiler complains about the deleted function,
+// simply add the missing specialization.
+template <typename T>
+const pb_field_t* FieldsArray() = delete;
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_client_MaybeDocument>() {
+  return firestore_client_MaybeDocument_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_client_MutationQueue>() {
+  return firestore_client_MutationQueue_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_client_Target>() {
+  return firestore_client_Target_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_client_TargetGlobal>() {
+  return firestore_client_TargetGlobal_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_client_WriteBatch>() {
+  return firestore_client_WriteBatch_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_BatchGetDocumentsRequest>() {
+  return google_firestore_v1_BatchGetDocumentsRequest_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_BatchGetDocumentsResponse>() {
+  return google_firestore_v1_BatchGetDocumentsResponse_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_CommitRequest>() {
+  return google_firestore_v1_CommitRequest_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_CommitResponse>() {
+  return google_firestore_v1_CommitResponse_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_ListenRequest>() {
+  return google_firestore_v1_ListenRequest_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_ListenResponse>() {
+  return google_firestore_v1_ListenResponse_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_RunQueryRequest>() {
+  return google_firestore_v1_RunQueryRequest_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_StructuredQuery_Filter>() {
+  return google_firestore_v1_StructuredQuery_Filter_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_Target_DocumentsTarget>() {
+  return google_firestore_v1_Target_DocumentsTarget_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_TargetChange>() {
+  return google_firestore_v1_TargetChange_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_Target_QueryTarget>() {
+  return google_firestore_v1_Target_QueryTarget_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_Value>() {
+  return google_firestore_v1_Value_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_ArrayValue>() {
+  return google_firestore_v1_ArrayValue_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_MapValue>() {
+  return google_firestore_v1_MapValue_fields;
+}
+
+template <>
+inline const pb_field_t*
+FieldsArray<google_firestore_v1_MapValue_FieldsEntry>() {
+  return google_firestore_v1_MapValue_FieldsEntry_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_Write>() {
+  return google_firestore_v1_Write_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_WriteRequest>() {
+  return google_firestore_v1_WriteRequest_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_WriteResponse>() {
+  return google_firestore_v1_WriteResponse_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_firestore_v1_WriteResult>() {
+  return google_firestore_v1_WriteResult_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_BundleMetadata>() {
+  return firestore_BundleMetadata_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<firestore_NamedQuery>() {
+  return firestore_NamedQuery_fields;
+}
+
+template <>
+inline const pb_field_t* FieldsArray<google_protobuf_Empty>() {
+  return google_protobuf_Empty_fields;
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_FIELDS_ARRAY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.cc
new file mode 100644
index 0000000..aa9bd08
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.cc	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/message.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+void FreeNanopbMessage(const pb_field_t* fields, void* dest_struct) {
+  pb_release(fields, dest_struct);
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.h
new file mode 100644
index 0000000..24e7e42
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/message.h	
@@ -0,0 +1,312 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_MESSAGE_H_
+#define FIRESTORE_CORE_SRC_NANOPB_MESSAGE_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/fields_array.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * Free the dynamically-allocated memory within a Nanopb-generated message.
+ *
+ * This essentially wraps calls to Nanopb's `pb_release()` function.
+ */
+void FreeNanopbMessage(const pb_field_t* fields, void* dest_struct);
+
+template <typename T>
+class Message;
+
+/**
+ * A unique-ownership RAII wrapper for Nanopb-generated message types.
+ *
+ * Nanopb-generated message types (from now on, "Nanopb protos") are plain
+ * C structs that contain some dynamically-allocated memory and should be
+ * deallocated by calling `pb_release`; `Message` implements a simple RAII
+ * wrapper that does just that. For simplicity, `Message` implements unique
+ * ownership model. It provides a pointer-like access to the underlying Nanopb
+ * proto.
+ *
+ * Note that moving *isn't* a particularly cheap operation in the general case.
+ * Even without doing deep copies, Nanopb protos contain *a lot* of member
+ * variables (at the time of writing, the largest `sizeof` of a Nanopb proto was
+ * 248).
+ */
+template <typename T>
+class Message {
+ public:
+  /**
+   * Creates a valid `Message` that wraps a value-constructed ("zeroed out")
+   * Nanopb proto. The created object can then be filled by using the
+   * pointer-like access.
+   */
+  Message() = default;
+
+  /**
+   * Creates a `Message` object that wraps `proto`. Takes ownership of `proto`.
+   */
+  explicit Message(const T& proto) : owns_proto_(true), proto_(proto) {
+  }
+
+  /**
+   * Attempts to parse a Nanopb message from the given `reader`. If the reader
+   * contains ill-formed bytes, returns a default-constructed `Message`; check
+   * the status on `reader` to see whether parsing was successful.
+   */
+  static Message TryParse(Reader* reader);
+
+  ~Message() {
+    Free();
+  }
+
+  /** `Message` models unique ownership. */
+  Message(const Message&) = delete;
+  Message& operator=(const Message&) = delete;
+
+  /**
+   * A moved-from `Message` is in an invalid state that is *not* equivalent to
+   * its default-constructed state. Calling `get()` on a moved-from `Message`
+   * returns a null pointer; attempting to "dereference" a moved-from `Message`
+   * results in undefined behavior.
+   */
+  Message(Message&& other) noexcept
+      : owns_proto_{other.owns_proto_}, proto_{other.proto_} {
+    other.owns_proto_ = false;
+  }
+
+  Message& operator=(Message&& other) noexcept {
+    Free();
+
+    owns_proto_ = other.owns_proto_;
+    proto_ = other.proto_;
+    other.owns_proto_ = false;
+
+    return *this;
+  }
+
+  T* release() {
+    auto result = get();
+    owns_proto_ = false;
+    return result;
+  }
+
+  /**
+   * Returns a pointer to the underlying Nanopb proto or null if the `Message`
+   * is moved-from.
+   */
+  T* get() {
+    return owns_proto_ ? &proto_ : nullptr;
+  }
+
+  /**
+   * Returns a pointer to the underlying Nanopb proto or null if the `Message`
+   * is moved-from.
+   */
+  const T* get() const {
+    return owns_proto_ ? &proto_ : nullptr;
+  }
+
+  /**
+   * Returns a reference to the underlying Nanopb proto; if the `Message` is
+   * moved-from, the behavior is undefined.
+   *
+   * For performance reasons, prefer assigning to individual fields to
+   * reassigning the whole Nanopb proto.
+   */
+  T& operator*() {
+    return *get();
+  }
+
+  /**
+   * Returns a reference to the underlying Nanopb proto; if the `Message` is
+   * moved-from, the behavior is undefined.
+   */
+  const T& operator*() const {
+    return *get();
+  }
+
+  T* operator->() {
+    return get();
+  }
+
+  const T* operator->() const {
+    return get();
+  }
+
+  /**
+   * Returns a pointer to the Nanopb-generated array that describes the fields
+   * of the Nanopb proto; the array is required to call most Nanopb functions.
+   *
+   * Note that this is essentially a property of the type, but cannot be made
+   * a template parameter for various technical reasons.
+   */
+  static const pb_field_t* fields() {
+    return FieldsArray<T>();
+  }
+
+  /** Creates a pretty-printed description of the proto for debugging. */
+  std::string ToString() const {
+    return proto_.ToString();
+  }
+
+  /**
+   * Returns false if the Message is not associated with a valid proto (for
+   * example, if it has been moved from).
+   */
+  constexpr explicit operator bool() const noexcept {
+    return owns_proto_;
+  }
+
+ private:
+  // Important: this function does *not* modify `owns_proto_`.
+  void Free() {
+    if (owns_proto_) {
+      FreeNanopbMessage(fields(), &proto_);
+    }
+  }
+
+  bool owns_proto_ = true;
+  // The Nanopb-proto is value-initialized (zeroed out) to make sure that any
+  // member variables that aren't written to are in a valid state.
+  T proto_{};
+};
+
+template <typename T>
+Message<T> MakeMessage(const T& proto) {
+  return Message<T>(proto);
+}
+
+/**
+ * A wrapper of Message objects that facilitates shared ownership of Protobuf
+ * data.
+ */
+// TODO(mrschmidt): Add a template <typename const T> specialization
+template <typename T>
+class SharedMessage {
+ public:
+  /** Creates a `SharedMessage` object that wraps `proto`. */
+  SharedMessage(Message<T> message)  // NOLINT
+      : message_{std::make_shared<Message<T>>(*message.release())} {
+  }
+
+  /**
+   * Returns a pointer to the underlying Nanopb proto.
+   */
+  T* get() {
+    return message_->get();
+  }
+
+  /**
+   * Returns a pointer to the underlying Nanopb proto.
+   */
+  const T* get() const {
+    return message_->get();
+  }
+
+  /**
+   * Returns a reference to the underlying Nanopb proto.
+   */
+  T& operator*() {
+    return *get();
+  }
+
+  /**
+   * Returns a reference to the underlying Nanopb proto.
+   */
+  const T& operator*() const {
+    return *get();
+  }
+
+  T* operator->() {
+    return get();
+  }
+
+  const T* operator->() const {
+    return get();
+  }
+
+ private:
+  std::shared_ptr<Message<T>> message_;
+};
+
+template <typename T>
+SharedMessage<T> MakeSharedMessage(const T& proto) {
+  return SharedMessage<T>(Message<T>(proto));
+}
+
+template <typename T>
+Message<T> Message<T>::TryParse(Reader* reader) {
+  Message<T> result;
+  reader->Read(result.fields(), result.get());
+
+  if (!reader->ok()) {
+    // In the event reading a Nanopb proto fails, Nanopb calls `pb_release` on
+    // the partially-filled message; let go of ownership to make sure double
+    // deletion doesn't occur.
+    result.release();
+    // Guarantee that a partially-filled message is never returned.
+    return Message<T>{};
+  }
+
+  return result;
+}
+
+/**
+ * Serializes the given `message` into a `ByteString`.
+ *
+ * The lifetime of the return value is entirely independent of the `message`.
+ */
+template <typename T>
+ByteString MakeByteString(const Message<T>& message) {
+  ByteStringWriter writer;
+  writer.Write(message.fields(), message.get());
+  return writer.Release();
+}
+
+/**
+ * Serializes the given `message` into a `std::string`.
+ *
+ * The lifetime of the return value is entirely independent of the `message`.
+ */
+template <typename T>
+std::string MakeStdString(const Message<T>& message) {
+  StringWriter writer;
+  writer.Write(message.fields(), message.get());
+  return writer.Release();
+}
+
+/** Free the dynamically-allocated memory for the fields array of type T. */
+template <typename T>
+void FreeFieldsArray(T* message) {
+  FreeNanopbMessage(FieldsArray<T>(), message);
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_MESSAGE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.cc
new file mode 100644
index 0000000..ec7c48b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.cc	
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+
+#include <cstdlib>
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+pb_size_t CheckedSize(size_t size) {
+  HARD_ASSERT(size <= PB_SIZE_MAX,
+              "Size exceeds nanopb limits. Too many entries.");
+  return static_cast<pb_size_t>(size);
+}
+
+pb_bytes_array_t* _Nullable CopyBytesArray(
+    const pb_bytes_array_t* _Nullable buffer) {
+  if (buffer == nullptr) return nullptr;
+  return MakeBytesArray(buffer->bytes, buffer->size);
+}
+
+pb_bytes_array_t* _Nullable MakeBytesArray(const void* _Nullable data,
+                                           size_t size) {
+  if (size == 0) return nullptr;
+
+  pb_size_t pb_size = CheckedSize(size);
+
+  // Allocate one extra byte for the null terminator that's not necessarily
+  // there in a string_view. As long as we're making a copy, might as well
+  // make a copy that won't overrun when used as a regular C string. This is
+  // essentially just to make debugging easier--actual user data can have
+  // embedded nulls so we shouldn't be using this as a C string under normal
+  // circumstances.
+  auto result = static_cast<pb_bytes_array_t*>(
+      std::malloc(PB_BYTES_ARRAY_T_ALLOCSIZE(pb_size + 1)));
+  result->size = pb_size;
+  std::memcpy(result->bytes, data, pb_size);
+  result->bytes[pb_size] = '\0';
+
+  return result;
+}
+
+std::string MakeString(const pb_bytes_array_t* _Nullable str) {
+  if (str == nullptr) return "";
+
+  auto bytes = reinterpret_cast<const char*>(str->bytes);
+  auto size = static_cast<size_t>(str->size);
+  return std::string{bytes, size};
+}
+
+absl::string_view MakeStringView(const pb_bytes_array_t* _Nullable str) {
+  if (str == nullptr) return absl::string_view(nullptr, 0);
+
+  auto bytes = reinterpret_cast<const char*>(str->bytes);
+  auto size = static_cast<size_t>(str->size);
+  return absl::string_view{bytes, size};
+}
+
+absl::string_view MakeStringView(const ByteString& bytes) {
+  const char* str = reinterpret_cast<const char*>(bytes.data());
+  return absl::string_view{str, bytes.size()};
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.h
new file mode 100644
index 0000000..6c55173
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/nanopb_util.h	
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_NANOPB_UTIL_H_
+#define FIRESTORE_CORE_SRC_NANOPB_NANOPB_UTIL_H_
+
+#include <pb.h>
+
+#include <cstdlib>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/nullability.h"
+#include "absl/base/casts.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * Static casts the given size_t value down to a nanopb compatible size, after
+ * asserting that the value isn't out of range.
+ */
+pb_size_t CheckedSize(size_t size);
+
+/**
+ * Creates a new, null-terminated byte array that's a copy of the bytes in the
+ * given buffer. Returns a null instance if the given buffer is null or empty.
+ */
+pb_bytes_array_t* _Nullable CopyBytesArray(
+    const pb_bytes_array_t* _Nullable buffer);
+
+/**
+ * Creates a new, null-terminated byte array that's a copy of the given bytes.
+ * Returns a null instance if the given size is zero.
+ */
+pb_bytes_array_t* _Nullable MakeBytesArray(const void* _Nullable data,
+                                           size_t size);
+
+/**
+ * Creates a new, null-terminated byte array that's a copy of the given bytes.
+ * Returns a null instance if the size of the given vector is zero.
+ */
+inline pb_bytes_array_t* _Nullable MakeBytesArray(
+    const std::vector<uint8_t>& bytes) {
+  return MakeBytesArray(bytes.data(), bytes.size());
+}
+
+/**
+ * Creates a string_view of the given nanopb bytes.
+ */
+absl::string_view MakeStringView(const pb_bytes_array_t* _Nullable str);
+
+/**
+ * Creates a string_view of the given nanopb bytes.
+ */
+absl::string_view MakeStringView(const ByteString& bytes);
+
+inline pb_bytes_array_t* _Nullable MakeBytesArray(const std::string& str) {
+  return MakeBytesArray(str.data(), str.size());
+}
+
+std::string MakeString(const pb_bytes_array_t* _Nullable str);
+
+/**
+ * Copies the backing byte array into a new vector of bytes.
+ */
+inline std::vector<uint8_t> MakeVector(const ByteString& str) {
+  return {str.begin(), str.end()};
+}
+
+/**
+ * Due to the nanopb implementation, nanopb_boolean could be an integer
+ * other than 0 or 1, (such as 2). This leads to undefined behaviour when
+ * it's read as a boolean. eg. on at least gcc, the value is treated as
+ * both true *and* false. So we'll instead memcpy to an integer (via
+ * absl::bit_cast) and compare with 0.
+ *
+ * Note that it is necessary to pass-by-reference here to get the original
+ * value of `nanopb_boolean`.
+ */
+inline bool SafeReadBoolean(const bool& nanopb_boolean) {
+  return absl::bit_cast<int8_t>(nanopb_boolean) != 0;
+}
+
+template <typename T>
+T* _Nonnull MakeArray(pb_size_t count) {
+  return static_cast<T*>(calloc(count, sizeof(T)));
+}
+
+template <typename T>
+T* _Nonnull ResizeArray(void* _Nonnull ptr, size_t count) {
+  return static_cast<T*>(realloc(ptr, CheckedSize(count) * sizeof(T)));
+}
+
+/**
+ * Initializes a repeated field with a list of values. Applies `converter` to
+ * each value before assigning.
+ */
+template <typename T, typename Iterator, typename Func>
+void SetRepeatedField(T* _Nonnull* _Nonnull fields_array,
+                      pb_size_t* _Nonnull fields_count,
+                      Iterator first,
+                      Iterator last,
+                      const Func& converter) {
+  HARD_ASSERT(fields_array, "fields_array must be non-null");
+  HARD_ASSERT(fields_count, "fields_count must be non-null");
+  *fields_count = nanopb::CheckedSize(std::distance(first, last));
+  *fields_array = nanopb::MakeArray<T>(*fields_count);
+  auto* current = *fields_array;
+  while (first != last) {
+    *current = converter(*first);
+    ++current;
+    ++first;
+  }
+}
+
+/**
+ * Initializes a repeated field with a list of values. Applies `converter` to
+ * each value before assigning.
+ */
+template <typename T, typename Container, typename Func>
+void SetRepeatedField(T* _Nonnull* _Nonnull fields_array,
+                      pb_size_t* _Nonnull fields_count,
+                      const Container& fields,
+                      const Func& converter) {
+  return SetRepeatedField(fields_array, fields_count, fields.begin(),
+                          fields.end(), converter);
+}
+
+/** Initializes a repeated field with a list of values. */
+template <typename T, typename Container>
+void SetRepeatedField(T* _Nonnull* _Nonnull fields_array,
+                      pb_size_t* _Nonnull fields_count,
+                      const Container& fields) {
+  return SetRepeatedField(fields_array, fields_count, fields,
+                          [](const T& val) { return val; });
+}
+
+/**
+ * Zeroes out the memory of `fields`. This can be used if the contents of fields
+ * array were moved to another message that takes on ownership.
+ */
+template <typename T>
+void ReleaseFieldOwnership(T* _Nonnull fields, pb_size_t fields_count) {
+  for (pb_size_t i = 0; i < fields_count; ++i) {
+    fields[i] = {};
+  }
+}
+
+#if __OBJC__
+inline ByteString MakeByteString(NSData* _Nullable value) {
+  if (value == nil) return ByteString();
+
+  auto size = static_cast<size_t>(value.length);
+  return ByteString::Take(MakeBytesArray(value.bytes, size));
+}
+
+inline NSData* _Nonnull MakeNSData(const ByteString& str) {
+  return [[NSData alloc] initWithBytes:str.data() length:str.size()];
+}
+
+inline NSData* _Nonnull MakeNSData(const pb_bytes_array_t* _Nullable data) {
+  return [[NSData alloc] initWithBytes:data->bytes length:data->size];
+}
+
+inline NSData* _Nullable MakeNullableNSData(const ByteString& str) {
+  if (str.empty()) return nil;
+  return MakeNSData(str);
+}
+#endif
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_NANOPB_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.cc
new file mode 100644
index 0000000..accab46
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.cc	
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/pretty_printing.h"
+
+#include <sstream>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+namespace internal {
+
+std::string Indent(int level, int indent_width) {
+  return std::string(level * indent_width, ' ');
+}
+
+std::string ToString(pb_bytes_array_t* value) {
+  return absl::StrCat("\"", nanopb::ByteString(value).ToString(), "\"");
+}
+
+std::string ToString(bool value) {
+  return value ? std::string{"true"} : std::string{"false"};
+}
+
+// Overloads for float and double exist to minimize the use of `stringstream`,
+// which isn't necessary for other scalars.
+std::string ToString(float value) {
+  // `std::to_string` doesn't allow changing width and precision for floating
+  // point values, leading to output inconsistent with "official" proto
+  // libraries.
+  // TODO(varconst): raise the precision.
+  // The Objective-C protobuf library would use higher precision. E.g., it would
+  // output 1.79769313486232e+308 in case where this implementation would only
+  // output 1.79769e+308 (tested in XCode 11, iOS simulator).
+  std::ostringstream stream;
+  stream << value;
+  return stream.str();
+}
+
+std::string ToString(double value) {
+  // See comment on the `float` overload.
+  std::ostringstream stream;
+  stream << value;
+  return stream.str();
+}
+
+}  // namespace internal
+
+std::string PrintHeader(int indent_level,
+                        absl::string_view message_name,
+                        const void* message_ptr) {
+  if (indent_level == 0) {
+    auto p = absl::Hex{reinterpret_cast<uintptr_t>(message_ptr)};
+    return absl::StrCat("<", message_name, " 0x", p, ">: {\n");
+  } else {
+    return "{\n";
+  }
+}
+
+std::string PrintTail(int indent_level) {
+  return internal::Indent(indent_level) + '}';
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.h
new file mode 100644
index 0000000..43758d8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/pretty_printing.h	
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_PRETTY_PRINTING_H_
+#define FIRESTORE_CORE_SRC_NANOPB_PRETTY_PRINTING_H_
+
+#include <pb.h>
+
+#include <string>
+
+#include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+namespace internal {
+
+// Creates a string of spaces corresponding to the given indentation level.
+std::string Indent(int level, int indent_width = 2);
+
+std::string ToString(pb_bytes_array_t* value);
+std::string ToString(bool value);
+std::string ToString(float value);
+std::string ToString(double value);
+
+template <typename T>
+std::string ToString(const T& value) {
+  return std::to_string(value);
+}
+
+}  // namespace internal
+
+// Prints a nested message by delegating to its `ToString` member function.
+//
+// If the nested message is empty, then:
+// - if `always_print` is false, an empty string is returned.
+// - if `always_print` is true, a string containing field name and empty braces
+//   is returned.
+template <typename T>
+std::string PrintMessageField(absl::string_view name,
+                              const T& value,
+                              int indent_level,
+                              bool always_print) {
+  auto contents = value.ToString(indent_level);
+  if (contents.empty()) {
+    if (!always_print) {
+      return "";
+    } else {
+      return absl::StrCat(internal::Indent(indent_level), name, "{\n",
+                          internal::Indent(indent_level), "}\n");
+    }
+  }
+
+  return absl::StrCat(internal::Indent(indent_level), name, contents, "\n");
+}
+
+// Prints a primitive type field.
+//
+// If the field has its default value (e.g., zero), then:
+// - if `always_print` is false, an empty string is returned.
+// - if `always_print` is true, a string representing the default value is
+//   returned.
+template <typename T>
+std::string PrintPrimitiveField(absl::string_view name,
+                                T value,
+                                int indent_level,
+                                bool always_print) {
+  if (value == T{} && !always_print) {
+    return "";
+  }
+  return absl::StrCat(internal::Indent(indent_level), name,
+                      internal::ToString(value), "\n");
+}
+
+// Prints an enum type field by delegating to a `EnumToString` free function.
+//
+// If the enum has its default value, zero), then:
+// - if `always_print` is false, an empty string is returned.
+// - if `always_print` is true, a string representing the default value is
+//   returned.
+template <typename T>
+std::string PrintEnumField(absl::string_view name,
+                           T value,
+                           int indent_level,
+                           bool always_print) {
+  if (value == T{} && !always_print) {
+    return "";
+  }
+
+  return absl::StrCat(internal::Indent(indent_level), name, EnumToString(value),
+                      "\n");
+}
+
+// Begins output for a message.
+//
+// For a non-root message (determined by `indent_level`), this is just an
+// opening brace. For the root message, `message_name` and the address of the
+// object are additionally printed (e.g., "<Foo 0x12345678>: {").
+std::string PrintHeader(int indent_level,
+                        absl::string_view message_name,
+                        const void* message_ptr);
+
+// Ends output for a message.
+//
+// This just outputs a closing brace.
+std::string PrintTail(int indent_level);
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_PRETTY_PRINTING_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.cc
new file mode 100644
index 0000000..6cffd8f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.cc	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/reader.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+StringReader::StringReader(const ByteString& bytes)
+    : StringReader(bytes.data(), bytes.size()) {
+}
+
+StringReader::StringReader(const std::vector<uint8_t>& bytes)
+    : StringReader(bytes.data(), bytes.size()) {
+}
+
+StringReader::StringReader(const uint8_t* bytes, size_t size)
+    : stream_(pb_istream_from_buffer(bytes, size)) {
+}
+
+StringReader::StringReader(absl::string_view str)
+    : StringReader(reinterpret_cast<const uint8_t*>(str.data()), str.size()) {
+}
+
+void StringReader::Read(const pb_field_t fields[], void* dest_struct) {
+  if (!ok()) return;
+
+  if (!pb_decode(&stream_, fields, dest_struct)) {
+    Fail(PB_GET_ERROR(&stream_));
+  }
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.h
new file mode 100644
index 0000000..d82c5fd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/reader.h	
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_READER_H_
+#define FIRESTORE_CORE_SRC_NANOPB_READER_H_
+
+#include <pb.h>
+#include <pb_decode.h>
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/util/read_context.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * An interface that:
+ * - maintains a `ReadContext` across the reads;
+ * - can read byte representations from the associated stream into a given
+ *   Nanopb proto.
+ *
+ * Derived classes define what kinds of streams can be associated with the
+ * `Reader`.
+ */
+class Reader {
+ public:
+  virtual ~Reader() = default;
+
+  /**
+   * Reads a Nanopb proto from the stream associated with this `Reader`.
+   *
+   * This essentially wraps calls to Nanopb's `pb_decode()` method. This is the
+   * primary way of decoding messages.
+   *
+   * Note that this allocates memory. You must call
+   * `nanopb::FreeNanopbMessage()` (which essentially wraps `pb_release()`) on
+   * the `dest_struct` in order to avoid memory leaks. (This also implies code
+   * that uses this is not exception safe.)
+   */
+  // TODO(rsgowman): At the moment we rely on the caller to manually free
+  // dest_struct via nanopb::FreeNanopbMessage(). We might instead see if we can
+  // register allocated messages, track them, and free them ourselves. This may
+  // be especially relevant if we start to use nanopb messages as the underlying
+  // data within the model objects.
+  virtual void Read(const pb_field_t fields[], void* dest_struct) = 0;
+
+  bool ok() const {
+    return context_.ok();
+  }
+
+  const util::Status& status() const {
+    return context_.status();
+  }
+
+  void set_status(util::Status status) {
+    context_.set_status(std::move(status));
+  }
+
+  util::ReadContext* context() {
+    return &context_;
+  }
+
+  const util::ReadContext* context() const {
+    return &context_;
+  }
+
+  void Fail(std::string description) {
+    context_.Fail(std::move(description));
+  }
+
+ private:
+  util::ReadContext context_;
+};
+
+/**
+ * Docs TODO(rsgowman). But currently, this just wraps the underlying nanopb
+ * pb_istream_t.
+ */
+class StringReader : public Reader {
+ public:
+  /**
+   * Creates an instance that isn't associated with any bytes. It can be used
+   * for error propagation.
+   * TODO(varconst): only use `ReadContext` for error propagation.
+   */
+  StringReader() = default;
+
+  /**
+   * Creates an input stream that reads from the specified bytes. Note that
+   * this reference must remain valid for the lifetime of this `StringReader`.
+   *
+   * (This is roughly equivalent to the Nanopb function
+   * `pb_istream_from_buffer()`)
+   *
+   * @param bytes where the input should be deserialized from.
+   */
+  explicit StringReader(const nanopb::ByteString& bytes);
+  explicit StringReader(const std::vector<uint8_t>& bytes);
+  StringReader(const uint8_t* bytes, size_t size);
+
+  /**
+   * Creates an input stream from bytes backing the string_view. Note that
+   * the backing buffer must remain valid for the lifetime of this
+   * `StringReader`.
+   *
+   * (This is roughly equivalent to the Nanopb function
+   * `pb_istream_from_buffer()`)
+   */
+  explicit StringReader(absl::string_view);
+
+  void Read(const pb_field_t fields[], void* dest_struct) override;
+
+ private:
+  /**
+   * Takes that a shallow copy of the given `stream`. (Non-null pointers within
+   * this struct must remain valid for the lifetime of this `StringReader`.)
+   */
+  explicit StringReader(pb_istream_t stream) : stream_(stream) {
+  }
+
+  pb_istream_t stream_{};
+};
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_READER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.cc
new file mode 100644
index 0000000..0b26e9b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.cc	
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/nanopb/writer.h"
+
+#include <algorithm>
+#include <utility>
+
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+namespace {
+
+constexpr size_t kMinBufferSize = 4;
+
+bool AppendToBytesArray(pb_ostream_t* stream,
+                        const pb_byte_t* buf,
+                        size_t count) {
+  auto writer = static_cast<ByteStringWriter*>(stream->state);
+  writer->Append(buf, count);
+  return true;
+}
+
+}  // namespace
+
+void Writer::Write(const pb_field_t fields[], const void* src_struct) {
+  if (!pb_encode(&stream_, fields, src_struct)) {
+    HARD_FAIL(PB_GET_ERROR(&stream_));
+  }
+}
+
+ByteStringWriter::ByteStringWriter() {
+  stream_.callback = AppendToBytesArray;
+  stream_.state = this;
+  stream_.max_size = SIZE_MAX;
+}
+
+ByteStringWriter::~ByteStringWriter() {
+  std::free(buffer_);
+}
+
+void ByteStringWriter::Append(const void* data, size_t size) {
+  if (size == 0) return;
+
+  pb_size_t pb_size = CheckedSize(size);
+  size_t current_size = this->size();
+  size_t min_capacity = current_size + pb_size;
+  HARD_ASSERT(min_capacity >= current_size);  // Avoid overflow
+
+  Reserve(min_capacity);
+  uint8_t* pos = this->pos();
+  std::memcpy(pos, data, size);
+  buffer_->size += pb_size;
+}
+
+void ByteStringWriter::Reserve(size_t min_capacity) {
+  // Bump the min_capacity up so that an explicit Reserve will trigger an
+  // allocation, making pos() guaranteed to be valid.
+  min_capacity = std::max(min_capacity, kMinBufferSize);
+  if (min_capacity <= capacity_) return;
+
+  // If capacity * 2 overflows, min_capacity will be larger.
+  size_t desired = std::max(capacity_ * 2, min_capacity);
+
+  if (buffer_) {
+    buffer_ = static_cast<pb_bytes_array_t*>(
+        std::realloc(buffer_, PB_BYTES_ARRAY_T_ALLOCSIZE(desired)));
+  } else {
+    // initialize on the first allocation.
+    buffer_ = static_cast<pb_bytes_array_t*>(
+        std::calloc(1, PB_BYTES_ARRAY_T_ALLOCSIZE(desired)));
+  }
+
+  capacity_ = desired;
+}
+
+void ByteStringWriter::SetSize(size_t size) {
+  HARD_ASSERT(buffer_ != nullptr &&
+              size <= capacity_);  // Should have reserved.
+  buffer_->size = CheckedSize(size);
+}
+
+ByteString ByteStringWriter::Release() {
+  pb_bytes_array_t* pending = buffer_;
+  buffer_ = nullptr;
+  capacity_ = 0;
+  return ByteString::Take(pending);
+}
+
+namespace {
+
+bool AppendToString(pb_ostream_t* stream, const pb_byte_t* buf, size_t count) {
+  auto str = static_cast<std::string*>(stream->state);
+  str->insert(str->end(), buf, buf + count);
+  return true;
+}
+
+}  // namespace
+
+StringWriter::StringWriter() {
+  stream_.callback = AppendToString;
+  stream_.state = &buffer_;
+  stream_.max_size = SIZE_MAX;
+}
+
+std::string StringWriter::Release() {
+  return std::move(buffer_);
+}
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.h
new file mode 100644
index 0000000..bfa29ce
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/nanopb/writer.h	
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_NANOPB_WRITER_H_
+#define FIRESTORE_CORE_SRC_NANOPB_WRITER_H_
+
+#include <pb.h>
+#include <pb_encode.h>
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace nanopb {
+
+/**
+ * Docs TODO(rsgowman). But currently, this just wraps the underlying Nanopb
+ * `pb_ostream_t`. All errors are considered fatal.
+ */
+class Writer {
+ public:
+  /**
+   * Writes a Nanopb proto to the output stream.
+   *
+   * This essentially wraps calls to Nanopb's `pb_encode()` method.
+   */
+  void Write(const pb_field_t* fields, const void* src_struct);
+
+ protected:
+  /**
+   * Creates a `Writer` with a value-initialized `pb_ostream_t`.
+   */
+  Writer() = default;
+
+  pb_ostream_t stream_{};
+};
+
+/**
+ * A `Writer` that writes into a vector of bytes.
+ *
+ * This is roughly equivalent to the Nanopb function `pb_ostream_from_buffer()`,
+ * except that `ByteStringWriter` manages the buffer.
+ */
+class ByteStringWriter : public Writer {
+ public:
+  ByteStringWriter();
+  ~ByteStringWriter();
+
+  ByteStringWriter(const ByteStringWriter&) = delete;
+  ByteStringWriter& operator=(const ByteStringWriter&) = delete;
+
+  /**
+   * Appends the given data to the internal buffer, growing the capacity of the
+   * buffer to fit.
+   */
+  void Append(const void* data, size_t size);
+
+  /**
+   * Reserves the given number of bytes of total capacity. To reserve `n` more
+   * bytes in a writer `w`, call `w.Reserve(w.size() + n)`.
+   */
+  void Reserve(size_t capacity);
+
+  /**
+   * Sets the size of the buffer to some value less than the current capacity,
+   * presumably after writing into the buffer with `pos()`.
+   */
+  void SetSize(size_t size);
+
+  /**
+   * Returns a `ByteString` that takes ownership of the bytes backing this
+   * writer.
+   */
+  ByteString Release();
+
+  size_t size() const {
+    return buffer_ ? buffer_->size : 0;
+  }
+
+  size_t capacity() const {
+    return capacity_;
+  }
+
+  /**
+   * Returns the number of remaining bytes: the difference between capacity and
+   * size.
+   */
+  size_t remaining() const {
+    return capacity_ - size();
+  }
+
+  /**
+   * Returns the current writing position within this writer's internal buffer.
+   * This can only be used after calling `Reserve()`.
+   */
+  uint8_t* pos() {
+    return buffer_->bytes + buffer_->size;
+  }
+
+ private:
+  pb_bytes_array_t* buffer_ = nullptr;
+  size_t capacity_ = 0;
+};
+
+/**
+ * A `Writer` that writes into a `std::string`.
+ *
+ * This is roughly equivalent to the Nanopb function `pb_ostream_from_buffer()`,
+ * except that `StringWriter` manages the string.
+ */
+class StringWriter : public Writer {
+ public:
+  StringWriter();
+
+  /**
+   * Returns the string backing this `StringWriter`, taking ownership of its
+   * contents.
+   */
+  std::string Release();
+
+ private:
+  std::string buffer_;
+};
+
+}  // namespace nanopb
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_NANOPB_WRITER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/objc/objc_type_traits.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/objc/objc_type_traits.h
new file mode 100644
index 0000000..268f960
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/objc/objc_type_traits.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_OBJC_OBJC_TYPE_TRAITS_H_
+#define FIRESTORE_CORE_SRC_OBJC_OBJC_TYPE_TRAITS_H_
+
+#if __OBJC__
+
+#include <objc/objc.h>  // for id
+
+#include <type_traits>
+
+namespace firebase {
+namespace firestore {
+namespace objc {
+
+/**
+ * A type trait that identifies whether or not the given pointer points to an
+ * Objective-C object.
+ *
+ * is_objc_pointer<NSObject*>::value == true
+ * is_objc_pointer<NSArray<NSString*>*>::value == true
+ *
+ * // id is a dynamically typed pointer to an Objective-C object.
+ * is_objc_pointer<id>::value == true
+ *
+ * // pointers to C++ classes are not Objective-C pointers.
+ * is_objc_pointer<void*>::value == false
+ * is_objc_pointer<std::string*>::value == false
+ * is_objc_pointer<std::unique_ptr<int>>::value == false
+ */
+template <typename T>
+using is_objc_pointer = std::is_convertible<T, id>;
+
+}  // namespace objc
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // __OBJC__
+
+#endif  // FIRESTORE_CORE_SRC_OBJC_OBJC_TYPE_TRAITS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.cc
new file mode 100644
index 0000000..2f35f08
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.cc	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/connectivity_monitor.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+void ConnectivityMonitor::SetInitialStatus(NetworkStatus new_status) {
+  HARD_ASSERT(!status_.has_value(),
+              "SetInitialStatus should only be called once");
+  status_ = new_status;
+}
+
+void ConnectivityMonitor::MaybeInvokeCallbacks(NetworkStatus new_status) {
+  if (new_status == status_) {
+    return;
+  }
+
+  InvokeCallbacks(new_status);
+}
+
+void ConnectivityMonitor::InvokeCallbacks(NetworkStatus new_status) {
+  status_ = new_status;
+  for (auto& callback : callbacks_) {
+    callback(status_.value());
+  }
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.h
new file mode 100644
index 0000000..a77f105
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_CONNECTIVITY_MONITOR_H_
+#define FIRESTORE_CORE_SRC_REMOTE_CONNECTIVITY_MONITOR_H_
+
+#include <functional>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/async_queue.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * A base class for monitoring changes in network connectivity; it is expected
+ * that each platform will have its own system-dependent implementation.
+ */
+class ConnectivityMonitor {
+ public:
+  /**
+   * The set of network states is deliberately simplified -- we only care about
+   * states such that transition between them should break currently
+   * established connections.
+   */
+  enum class NetworkStatus {
+    Unavailable,
+    Available,
+    AvailableViaCellular,
+  };
+
+  using Callback = std::function<void(NetworkStatus)>;
+
+  /** Creates a platform-specific connectivity monitor. */
+  static std::unique_ptr<ConnectivityMonitor> Create(
+      const std::shared_ptr<util::AsyncQueue>& worker_queue);
+
+  explicit ConnectivityMonitor(
+      const std::shared_ptr<util::AsyncQueue>& worker_queue)
+      : worker_queue_{worker_queue} {
+  }
+
+  virtual ~ConnectivityMonitor() = default;
+
+  void AddCallback(Callback&& callback) {
+    callbacks_.push_back(std::move(callback));
+  }
+  // TODO(varconst): RemoveCallback.
+
+ protected:
+  // The status may be retrieved asynchronously.
+  void SetInitialStatus(NetworkStatus new_status);
+
+  // Invokes callbacks only if the status changed.
+  void MaybeInvokeCallbacks(NetworkStatus new_status);
+
+  // Invokes callbacks and sets net status to `new_status`.
+  void InvokeCallbacks(NetworkStatus new_status);
+
+  const std::shared_ptr<util::AsyncQueue>& queue() {
+    return worker_queue_;
+  }
+
+ private:
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  std::vector<Callback> callbacks_;
+  absl::optional<NetworkStatus> status_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_CONNECTIVITY_MONITOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor_apple.mm
new file mode 100644
index 0000000..33d6b7e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/connectivity_monitor_apple.mm	
@@ -0,0 +1,196 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/connectivity_monitor.h"
+
+#if defined(__APPLE__)
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+#endif
+
+#include <SystemConfiguration/SystemConfiguration.h>
+#include <dispatch/dispatch.h>
+#include <netinet/in.h>
+
+#include <memory>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+namespace {
+
+using NetworkStatus = ConnectivityMonitor::NetworkStatus;
+using util::AsyncQueue;
+
+NetworkStatus ToNetworkStatus(SCNetworkReachabilityFlags flags) {
+  if (!(flags & kSCNetworkReachabilityFlagsReachable)) {
+    return NetworkStatus::Unavailable;
+  }
+  if (flags & kSCNetworkReachabilityFlagsConnectionRequired) {
+    return NetworkStatus::Unavailable;
+  }
+
+#if TARGET_OS_IPHONE
+  if (flags & kSCNetworkReachabilityFlagsIsWWAN) {
+    return NetworkStatus::AvailableViaCellular;
+  }
+#endif
+  return NetworkStatus::Available;
+}
+
+SCNetworkReachabilityRef CreateReachability() {
+  // Pseudoaddress that monitors internet reachability in general.
+  sockaddr_in any_connection_addr{};
+  any_connection_addr.sin_len = sizeof(any_connection_addr);
+  any_connection_addr.sin_family = AF_INET;
+  return SCNetworkReachabilityCreateWithAddress(
+      nullptr, reinterpret_cast<sockaddr*>(&any_connection_addr));
+}
+
+void OnReachabilityChangedCallback(SCNetworkReachabilityRef /*unused*/,
+                                   SCNetworkReachabilityFlags flags,
+                                   void* raw_this);
+
+}  // namespace
+
+/**
+ * Implementation of `ConnectivityMonitor` based on `SCNetworkReachability`
+ * (iOS/MacOS).
+ */
+class ConnectivityMonitorApple : public ConnectivityMonitor {
+ public:
+  explicit ConnectivityMonitorApple(
+      const std::shared_ptr<AsyncQueue>& worker_queue)
+      : ConnectivityMonitor{worker_queue} {
+    reachability_ = CreateReachability();
+    if (!reachability_) {
+      LOG_DEBUG("Failed to create reachability monitor.");
+      return;
+    }
+
+    SCNetworkReachabilityFlags flags{};
+    if (SCNetworkReachabilityGetFlags(reachability_, &flags)) {
+      SetInitialStatus(ToNetworkStatus(flags));
+    }
+
+    SCNetworkReachabilityContext context{};
+    context.info = this;
+    bool success = SCNetworkReachabilitySetCallback(
+        reachability_, OnReachabilityChangedCallback, &context);
+    if (!success) {
+      LOG_DEBUG("Couldn't set reachability callback");
+      return;
+    }
+
+    // It's okay to use the main queue for reachability events because they are
+    // fairly infrequent, and there's no good way to get the underlying dispatch
+    // queue out of the worker queue. The callback itself is still executed on
+    // the worker queue.
+    success = SCNetworkReachabilitySetDispatchQueue(reachability_,
+                                                    dispatch_get_main_queue());
+    if (!success) {
+      LOG_DEBUG("Couldn't set reachability queue");
+      return;
+    }
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+    this->observer_ = [[NSNotificationCenter defaultCenter]
+        addObserverForName:UIApplicationWillEnterForegroundNotification
+                    object:nil
+                     queue:[NSOperationQueue mainQueue]
+                usingBlock:^(NSNotification* note) {
+                  this->OnEnteredForeground();
+                }];
+#endif
+  }
+
+  ~ConnectivityMonitorApple() {
+#if TARGET_OS_IOS || TARGET_OS_TV
+    [[NSNotificationCenter defaultCenter] removeObserver:this->observer_];
+#endif
+
+    if (reachability_) {
+      bool success =
+          SCNetworkReachabilitySetDispatchQueue(reachability_, nullptr);
+      if (!success) {
+        LOG_DEBUG("Couldn't unset reachability queue");
+      }
+
+      CFRelease(reachability_);
+    }
+  }
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+  void OnEnteredForeground() {
+    SCNetworkReachabilityFlags flags{};
+    if (!SCNetworkReachabilityGetFlags(reachability_, &flags)) return;
+
+    queue()->Enqueue([this, flags] {
+      auto status = ToNetworkStatus(flags);
+      if (status != NetworkStatus::Unavailable) {
+        // There may have been network changes while Firestore was in the
+        // background for which we did not get OnReachabilityChangedCallback
+        // notifications. If entering the foreground and we have a connection,
+        // reset the connection to ensure that RPCs don't have to wait for TCP
+        // timeouts.
+        this->InvokeCallbacks(status);
+      } else {
+        this->MaybeInvokeCallbacks(status);
+      }
+    });
+  }
+#endif
+
+  void OnReachabilityChanged(SCNetworkReachabilityFlags flags) {
+    queue()->Enqueue(
+        [this, flags] { MaybeInvokeCallbacks(ToNetworkStatus(flags)); });
+  }
+
+ private:
+  SCNetworkReachabilityRef reachability_ = nil;
+#if TARGET_OS_IOS || TARGET_OS_TV
+  id<NSObject> observer_ = nil;
+#endif
+};
+
+namespace {
+
+void OnReachabilityChangedCallback(SCNetworkReachabilityRef /*unused*/,
+                                   SCNetworkReachabilityFlags flags,
+                                   void* raw_this) {
+  HARD_ASSERT(raw_this, "Received a null pointer as context");
+  static_cast<ConnectivityMonitorApple*>(raw_this)->OnReachabilityChanged(
+      flags);
+}
+
+}  // namespace
+
+std::unique_ptr<ConnectivityMonitor> ConnectivityMonitor::Create(
+    const std::shared_ptr<AsyncQueue>& worker_queue) {
+  return absl::make_unique<ConnectivityMonitorApple>(worker_queue);
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(__APPLE__)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.cc
new file mode 100644
index 0000000..6b4f193
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.cc	
@@ -0,0 +1,354 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/datastore.h"
+
+#include <unordered_set>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/remote/connectivity_monitor.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/remote/grpc_completion.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/grpc_nanopb.h"
+#include "Firestore/core/src/remote/grpc_stream.h"
+#include "Firestore/core/src/remote/grpc_streaming_reader.h"
+#include "Firestore/core/src/remote/grpc_unary_call.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+using auth::CredentialsProvider;
+using auth::Token;
+using core::DatabaseInfo;
+using model::DocumentKey;
+using model::Mutation;
+using util::AsyncQueue;
+using util::Executor;
+using util::LogIsDebugEnabled;
+using util::Status;
+using util::StatusOr;
+
+const auto kRpcNameCommit = "/google.firestore.v1.Firestore/Commit";
+const auto kRpcNameLookup = "/google.firestore.v1.Firestore/BatchGetDocuments";
+
+std::unique_ptr<Executor> CreateExecutor() {
+  return Executor::CreateSerial("com.google.firebase.firestore.rpc");
+}
+
+std::string MakeString(grpc::string_ref grpc_str) {
+  return {grpc_str.begin(), grpc_str.size()};
+}
+
+absl::string_view MakeStringView(grpc::string_ref grpc_str) {
+  return {grpc_str.begin(), grpc_str.size()};
+}
+
+void LogGrpcCallFinished(absl::string_view rpc_name,
+                         GrpcCall* call,
+                         const Status& status) {
+  LOG_DEBUG("RPC %s completed. Error: %s: %s", rpc_name, status.code(),
+            status.error_message());
+  if (LogIsDebugEnabled()) {
+    auto headers =
+        Datastore::GetAllowlistedHeadersAsString(call->GetResponseHeaders());
+    LOG_DEBUG("RPC %s returned headers (allowlisted): %s", rpc_name, headers);
+  }
+}
+
+}  // namespace
+
+Datastore::Datastore(const DatabaseInfo& database_info,
+                     const std::shared_ptr<AsyncQueue>& worker_queue,
+                     std::shared_ptr<CredentialsProvider> credentials,
+                     ConnectivityMonitor* connectivity_monitor,
+                     FirebaseMetadataProvider* firebase_metadata_provider)
+    : worker_queue_{NOT_NULL(worker_queue)},
+      credentials_{std::move(credentials)},
+      rpc_executor_{CreateExecutor()},
+      connectivity_monitor_{connectivity_monitor},
+      grpc_connection_{database_info, worker_queue, &grpc_queue_,
+                       connectivity_monitor_, firebase_metadata_provider},
+      datastore_serializer_{database_info} {
+  if (!database_info.ssl_enabled()) {
+    GrpcConnection::UseInsecureChannel(database_info.host());
+  }
+}
+
+void Datastore::Start() {
+  rpc_executor_->Execute([this] { PollGrpcQueue(); });
+}
+
+void Datastore::Shutdown() {
+  is_shut_down_ = true;
+
+  // Order matters here: shutting down `grpc_connection_`, which will quickly
+  // finish any pending gRPC calls, must happen before shutting down the gRPC
+  // queue.
+  grpc_connection_.Shutdown();
+
+  // `grpc::CompletionQueue::Next` will only return `false` once `Shutdown` has
+  // been called and all submitted tags have been extracted. Without this call,
+  // `rpc_executor_` will never finish.
+  grpc_queue_.Shutdown();
+  // Drain the executor to make sure it extracted all the operations from gRPC
+  // completion queue.
+  rpc_executor_->ExecuteBlocking([] {});
+}
+
+void Datastore::PollGrpcQueue() {
+  HARD_ASSERT(rpc_executor_->IsCurrentExecutor(),
+              "PollGrpcQueue should only be called on the "
+              "dedicated Datastore executor");
+
+  void* tag = nullptr;
+  bool ok = false;
+  while (grpc_queue_.Next(&tag, &ok)) {
+    auto completion = static_cast<GrpcCompletion*>(tag);
+    // While it's valid in principle, we never deliberately pass a null pointer
+    // to gRPC completion queue and expect it back. This assertion might be
+    // relaxed if necessary.
+    HARD_ASSERT(tag, "gRPC queue returned a null tag");
+    completion->Complete(ok);
+  }
+}
+
+std::shared_ptr<WatchStream> Datastore::CreateWatchStream(
+    WatchStreamCallback* callback) {
+  return std::make_shared<WatchStream>(worker_queue_, credentials_,
+                                       datastore_serializer_.serializer(),
+                                       &grpc_connection_, callback);
+}
+
+std::shared_ptr<WriteStream> Datastore::CreateWriteStream(
+    WriteStreamCallback* callback) {
+  return std::make_shared<WriteStream>(worker_queue_, credentials_,
+                                       datastore_serializer_.serializer(),
+                                       &grpc_connection_, callback);
+}
+
+void Datastore::CommitMutations(const std::vector<Mutation>& mutations,
+                                CommitCallback&& callback) {
+  ResumeRpcWithCredentials(
+      // TODO(c++14): move into lambda.
+      [this, mutations,
+       callback](const StatusOr<Token>& maybe_credentials) mutable {
+        if (!maybe_credentials.ok()) {
+          callback(maybe_credentials.status());
+          return;
+        }
+        CommitMutationsWithCredentials(maybe_credentials.ValueOrDie(),
+                                       mutations, std::move(callback));
+      });
+}
+
+void Datastore::CommitMutationsWithCredentials(
+    const Token& token,
+    const std::vector<Mutation>& mutations,
+    CommitCallback&& callback) {
+  grpc::ByteBuffer message =
+      MakeByteBuffer(datastore_serializer_.EncodeCommitRequest(mutations));
+
+  std::unique_ptr<GrpcUnaryCall> call_owning = grpc_connection_.CreateUnaryCall(
+      kRpcNameCommit, token, std::move(message));
+  GrpcUnaryCall* call = call_owning.get();
+  active_calls_.push_back(std::move(call_owning));
+
+  call->Start(
+      // TODO(c++14): move into lambda.
+      [this, call, callback](const StatusOr<grpc::ByteBuffer>& result) {
+        LogGrpcCallFinished("CommitRequest", call, result.status());
+        HandleCallStatus(result.status());
+
+        // Response is deliberately ignored
+        callback(result.status());
+
+        RemoveGrpcCall(call);
+      });
+}
+
+void Datastore::LookupDocuments(const std::vector<DocumentKey>& keys,
+                                LookupCallback&& callback) {
+  ResumeRpcWithCredentials(
+      // TODO(c++14): move into lambda.
+      [this, keys, callback](const StatusOr<Token>& maybe_credentials) mutable {
+        if (!maybe_credentials.ok()) {
+          callback(maybe_credentials.status());
+          return;
+        }
+        LookupDocumentsWithCredentials(maybe_credentials.ValueOrDie(), keys,
+                                       std::move(callback));
+      });
+}
+
+void Datastore::LookupDocumentsWithCredentials(
+    const Token& token,
+    const std::vector<DocumentKey>& keys,
+    LookupCallback&& callback) {
+  grpc::ByteBuffer message =
+      MakeByteBuffer(datastore_serializer_.EncodeLookupRequest(keys));
+
+  std::unique_ptr<GrpcStreamingReader> call_owning =
+      grpc_connection_.CreateStreamingReader(kRpcNameLookup, token,
+                                             std::move(message));
+  GrpcStreamingReader* call = call_owning.get();
+  active_calls_.push_back(std::move(call_owning));
+
+  // TODO(c++14): move into lambda.
+  call->Start([this, call, callback](
+                  const StatusOr<std::vector<grpc::ByteBuffer>>& result) {
+    LogGrpcCallFinished("BatchGetDocuments", call, result.status());
+    HandleCallStatus(result.status());
+
+    OnLookupDocumentsResponse(result, callback);
+
+    RemoveGrpcCall(call);
+  });
+}
+
+void Datastore::OnLookupDocumentsResponse(
+    const StatusOr<std::vector<grpc::ByteBuffer>>& result,
+    const LookupCallback& callback) {
+  if (!result.ok()) {
+    callback(result.status());
+    return;
+  }
+
+  std::vector<grpc::ByteBuffer> responses = std::move(result).ValueOrDie();
+  callback(datastore_serializer_.MergeLookupResponses(responses));
+}
+
+void Datastore::ResumeRpcWithCredentials(const OnCredentials& on_credentials) {
+  // Auth may outlive Firestore
+  std::weak_ptr<Datastore> weak_this{shared_from_this()};
+
+  credentials_->GetToken(
+      [weak_this, on_credentials](const StatusOr<Token>& result) {
+        auto strong_this = weak_this.lock();
+        if (!strong_this) {
+          return;
+        }
+
+        strong_this->worker_queue_->EnqueueRelaxed(
+            [weak_this, result, on_credentials] {
+              auto strong_this = weak_this.lock();
+              if (!strong_this) {
+                return;
+              }
+              // In case Auth callback is invoked after Datastore has been shut
+              // down.
+              if (strong_this->is_shut_down_) {
+                return;
+              }
+
+              on_credentials(result);
+            });
+      });
+}
+
+void Datastore::HandleCallStatus(const Status& status) {
+  if (status.code() == Error::kErrorUnauthenticated) {
+    credentials_->InvalidateToken();
+  }
+}
+
+void Datastore::RemoveGrpcCall(GrpcCall* to_remove) {
+  auto found = std::find_if(active_calls_.begin(), active_calls_.end(),
+                            [to_remove](const std::unique_ptr<GrpcCall>& call) {
+                              return call.get() == to_remove;
+                            });
+  HARD_ASSERT(found != active_calls_.end(), "Missing gRPC call");
+  active_calls_.erase(found);
+}
+
+bool Datastore::IsAbortedError(const Status& error) {
+  return error.code() == Error::kErrorAborted;
+}
+
+bool Datastore::IsPermanentError(const Status& error) {
+  switch (error.code()) {
+    case Error::kErrorOk:
+      HARD_FAIL("Treated status OK as error");
+    case Error::kErrorCancelled:
+    case Error::kErrorUnknown:
+    case Error::kErrorDeadlineExceeded:
+    case Error::kErrorResourceExhausted:
+    case Error::kErrorInternal:
+    case Error::kErrorUnavailable:
+      // Unauthenticated means something went wrong with our token and we need
+      // to retry with new credentials which will happen automatically.
+    case Error::kErrorUnauthenticated:
+      return false;
+    case Error::kErrorInvalidArgument:
+    case Error::kErrorNotFound:
+    case Error::kErrorAlreadyExists:
+    case Error::kErrorPermissionDenied:
+    case Error::kErrorFailedPrecondition:
+    case Error::kErrorAborted:
+      // Aborted might be retried in some scenarios, but that is dependant on
+      // the context and should handled individually by the calling code.
+      // See https://cloud.google.com/apis/design/errors
+    case Error::kErrorOutOfRange:
+    case Error::kErrorUnimplemented:
+    case Error::kErrorDataLoss:
+      return true;
+  }
+
+  HARD_FAIL("Unknown status code: %s", error.code());
+}
+
+bool Datastore::IsPermanentWriteError(const Status& error) {
+  return IsPermanentError(error) && !IsAbortedError(error);
+}
+
+std::string Datastore::GetAllowlistedHeadersAsString(
+    const GrpcCall::Metadata& headers) {
+  static auto* allowlist = new std::unordered_set<std::string>{
+      "date", "x-google-backends", "x-google-netmon-label", "x-google-service",
+      "x-google-gfe-request-trace"};
+
+  std::string result;
+  auto end = allowlist->end();
+  for (const auto& kv : headers) {
+    if (allowlist->find(MakeString(kv.first)) != end) {
+      absl::StrAppend(&result, MakeStringView(kv.first), ": ",
+                      MakeStringView(kv.second), "\n");
+    }
+  }
+  return result;
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.h
new file mode 100644
index 0000000..a6860c8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/datastore.h	
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_DATASTORE_H_
+#define FIRESTORE_CORE_SRC_REMOTE_DATASTORE_H_
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/remote/grpc_call.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/remote_objc_bridge.h"
+#include "Firestore/core/src/remote/watch_stream.h"
+#include "Firestore/core/src/remote/write_stream.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+#include "grpcpp/completion_queue.h"
+#include "grpcpp/support/status.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace model {
+class Document;
+};  // namespace model
+
+namespace remote {
+
+class ConnectivityMonitor;
+class FirebaseMetadataProvider;
+
+/**
+ * `Datastore` represents a proxy for the remote server, hiding details of the
+ * RPC layer. It:
+ *
+ *   - Manages connections to the server
+ *   - Authenticates to the server
+ *   - Manages threading and keeps higher-level code running on the worker queue
+ *   - Serializes internal model objects to and from protocol buffers
+ *
+ * `Datastore` is generally not responsible for understanding the higher-level
+ * protocol involved in actually making changes or reading data, and aside from
+ * the connections it manages is otherwise stateless.
+ *
+ * This class is only intended to be inherited from by test mocks.
+ */
+class Datastore : public std::enable_shared_from_this<Datastore> {
+ public:
+  using LookupCallback =
+      std::function<void(const util::StatusOr<std::vector<model::Document>>&)>;
+  using CommitCallback = std::function<void(const util::Status&)>;
+
+  Datastore(const core::DatabaseInfo& database_info,
+            const std::shared_ptr<util::AsyncQueue>& worker_queue,
+            std::shared_ptr<auth::CredentialsProvider> credentials,
+            ConnectivityMonitor* connectivity_monitor,
+            FirebaseMetadataProvider* firebase_metadata_provider);
+
+  virtual ~Datastore() = default;
+
+  /** Starts polling the gRPC completion queue. */
+  void Start();
+  /** Cancels any pending gRPC calls and drains the gRPC completion queue. */
+  void Shutdown();
+
+  /**
+   * Creates a new `WatchStream` that is still unstarted but uses a common
+   * shared channel.
+   */
+  virtual std::shared_ptr<WatchStream> CreateWatchStream(
+      WatchStreamCallback* callback);
+  /**
+   * Creates a new `WriteStream` that is still unstarted but uses a common
+   * shared channel.
+   */
+  virtual std::shared_ptr<WriteStream> CreateWriteStream(
+      WriteStreamCallback* callback);
+
+  void CommitMutations(const std::vector<model::Mutation>& mutations,
+                       CommitCallback&& callback);
+  void LookupDocuments(const std::vector<model::DocumentKey>& keys,
+                       LookupCallback&& callback);
+
+  /** Returns true if the given error is a gRPC ABORTED error. */
+  static bool IsAbortedError(const util::Status& error);
+
+  /**
+   * Determines whether an error code represents a permanent error when received
+   * in response to a non-write operation.
+   *
+   * See `IsPermanentWriteError` for classifying write errors.
+   */
+  static bool IsPermanentError(const util::Status& error);
+
+  /**
+   * Determines whether an error code represents a permanent error when received
+   * in response to a write operation.
+   *
+   * Write operations must be handled specially because as of b/119437764,
+   * ABORTED errors on the write stream should be retried too (even though
+   * ABORTED errors are not generally retryable).
+   *
+   * Note that during the initial handshake on the write stream an ABORTED error
+   * signals that we should discard our stream token (i.e. it is permanent).
+   * This means a handshake error should be classified with `IsPermanentError`,
+   * above.
+   */
+  static bool IsPermanentWriteError(const util::Status& error);
+
+  static std::string GetAllowlistedHeadersAsString(
+      const GrpcCall::Metadata& headers);
+
+  Datastore(const Datastore& other) = delete;
+  Datastore(Datastore&& other) = delete;
+  Datastore& operator=(const Datastore& other) = delete;
+  Datastore& operator=(Datastore&& other) = delete;
+
+ protected:
+  /** Test-only method */
+  grpc::CompletionQueue* grpc_queue() {
+    return &grpc_queue_;
+  }
+  /** Test-only method */
+  GrpcCall* LastCall() {
+    return !active_calls_.empty() ? active_calls_.back().get() : nullptr;
+  }
+
+  /** Test-only getter for mocking */
+  GrpcConnection* grpc_connection() {
+    return &grpc_connection_;
+  }
+
+ private:
+  void PollGrpcQueue();
+
+  void CommitMutationsWithCredentials(
+      const auth::Token& token,
+      const std::vector<model::Mutation>& mutations,
+      CommitCallback&& callback);
+
+  void LookupDocumentsWithCredentials(
+      const auth::Token& token,
+      const std::vector<model::DocumentKey>& keys,
+      LookupCallback&& callback);
+  void OnLookupDocumentsResponse(
+      const util::StatusOr<std::vector<grpc::ByteBuffer>>& result,
+      const LookupCallback& callback);
+
+  using OnCredentials = std::function<void(const util::StatusOr<auth::Token>&)>;
+  void ResumeRpcWithCredentials(const OnCredentials& on_credentials);
+
+  void HandleCallStatus(const util::Status& status);
+
+  void RemoveGrpcCall(GrpcCall* to_remove);
+
+  // In case Auth tries to invoke a callback after `Datastore` has been shut
+  // down.
+  bool is_shut_down_ = false;
+
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  std::shared_ptr<auth::CredentialsProvider> credentials_;
+
+  // A separate executor dedicated to polling gRPC completion queue (which is
+  // shared for all spawned gRPC streams and calls).
+  std::unique_ptr<util::Executor> rpc_executor_;
+  grpc::CompletionQueue grpc_queue_;
+  ConnectivityMonitor* connectivity_monitor_ = nullptr;
+  GrpcConnection grpc_connection_;
+
+  std::vector<std::unique_ptr<GrpcCall>> active_calls_;
+  DatastoreSerializer datastore_serializer_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_DATASTORE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/existence_filter.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/existence_filter.h
new file mode 100644
index 0000000..3f4019c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/existence_filter.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_EXISTENCE_FILTER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_EXISTENCE_FILTER_H_
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class ExistenceFilter {
+ public:
+  ExistenceFilter() = default;
+  explicit ExistenceFilter(int count) : count_{count} {
+  }
+
+  int count() const {
+    return count_;
+  }
+
+ private:
+  int count_ = 0;
+};
+
+inline bool operator==(const ExistenceFilter& lhs, const ExistenceFilter& rhs) {
+  return lhs.count() == rhs.count();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_EXISTENCE_FILTER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.cc
new file mode 100644
index 0000000..bb78c9d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.cc	
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/exponential_backoff.h"
+
+#include <algorithm>
+#include <memory>
+#include <random>
+#include <utility>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+using firebase::firestore::util::AsyncQueue;
+using firebase::firestore::util::TimerId;
+using Milliseconds = util::AsyncQueue::Milliseconds;
+namespace chr = std::chrono;
+
+/**
+ * Initial backoff time in milliseconds after an error. Set to 1s according to
+ * https://cloud.google.com/apis/design/errors.
+ */
+constexpr Milliseconds kDefaultBackoffInitialDelay = Milliseconds(1000);
+
+constexpr double kDefaultBackoffFactor = 1.5;
+
+/** Maximum backoff time in milliseconds. */
+constexpr Milliseconds kDefaultBackoffMaxDelay = Milliseconds(60 * 1000);
+
+}  // namespace
+
+ExponentialBackoff::ExponentialBackoff(const std::shared_ptr<AsyncQueue>& queue,
+                                       TimerId timer_id,
+                                       double backoff_factor,
+                                       Milliseconds initial_delay,
+                                       Milliseconds max_delay)
+    : queue_{queue},
+      timer_id_{timer_id},
+      backoff_factor_{backoff_factor},
+      initial_delay_{initial_delay},
+      max_delay_{max_delay},
+      last_attempt_time_{chr::steady_clock::now()} {
+  HARD_ASSERT(queue, "Queue can't be null");
+
+  HARD_ASSERT(backoff_factor >= 1.0, "Backoff factor must be at least 1");
+
+  HARD_ASSERT(initial_delay.count() >= 0, "Delays must be non-negative");
+  HARD_ASSERT(max_delay.count() >= 0, "Delays must be non-negative");
+  HARD_ASSERT(initial_delay <= max_delay,
+              "Initial delay can't be greater than max delay");
+}
+
+ExponentialBackoff::ExponentialBackoff(const std::shared_ptr<AsyncQueue>& queue,
+                                       TimerId timer_id)
+    : ExponentialBackoff(queue,
+                         timer_id,
+                         kDefaultBackoffFactor,
+                         kDefaultBackoffInitialDelay,
+                         kDefaultBackoffMaxDelay) {
+}
+
+void ExponentialBackoff::BackoffAndRun(AsyncQueue::Operation&& operation) {
+  Cancel();
+
+  // First schedule the block using the current base (which may be 0 and should
+  // be honored as such).
+  Milliseconds desired_delay_with_jitter = current_base_ + GetDelayWithJitter();
+
+  Milliseconds delay_so_far = chr::duration_cast<Milliseconds>(
+      chr::steady_clock::now() - last_attempt_time_);
+
+  // Guard against the backoff delay already being past.
+  auto remaining_delay =
+      std::max(Milliseconds::zero(), desired_delay_with_jitter - delay_so_far);
+
+  if (current_base_.count() > 0) {
+    LOG_DEBUG(
+        "Backing off for %s ms "
+        "(base delay: %s ms, "
+        "delay with jitter: %s ms, "
+        "last attempt: %s ms ago)",
+        remaining_delay.count(), current_base_.count(),
+        desired_delay_with_jitter.count(), delay_so_far.count());
+  }
+
+  delayed_operation_ =
+      queue_->EnqueueAfterDelay(remaining_delay, timer_id_, [this, operation] {
+        last_attempt_time_ = chr::steady_clock::now();
+        operation();
+      });
+
+  // Apply backoff factor to determine next delay, but ensure it is within
+  // bounds.
+  current_base_ = ClampDelay(
+      chr::duration_cast<Milliseconds>(current_base_ * backoff_factor_));
+}
+
+Milliseconds ExponentialBackoff::GetDelayWithJitter() {
+  std::uniform_real_distribution<double> distribution;
+  double random_double = distribution(secure_random_);
+  return chr::duration_cast<Milliseconds>((random_double - 0.5) *
+                                          current_base_);
+}
+
+Milliseconds ExponentialBackoff::ClampDelay(Milliseconds delay) const {
+  if (delay < initial_delay_) {
+    return initial_delay_;
+  }
+  if (delay > max_delay_) {
+    return max_delay_;
+  }
+  return delay;
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.h
new file mode 100644
index 0000000..5f628f4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/exponential_backoff.h	
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_EXPONENTIAL_BACKOFF_H_
+#define FIRESTORE_CORE_SRC_REMOTE_EXPONENTIAL_BACKOFF_H_
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <memory>
+
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/secure_random.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ *
+ * A helper for running delayed operations following an exponential backoff
+ * curve between attempts.
+ *
+ * The first attempt will be done immediately. After that, each retry will
+ * have a delay that is made up of a "base" delay which follows the
+ * exponential backoff curve, and a +/- <=50% "jitter" that is calculated and
+ * added to the base delay. This prevents clients from accidentally
+ * synchronizing their delays causing spikes of load to the backend.
+ *
+ */
+class ExponentialBackoff {
+ public:
+  /**
+   * @param queue The queue to run operations on.
+   * @param timer_id The id to use when scheduling backoff operations on the
+   *     queue.
+   * @param backoff_factor The multiplier to use to determine the extended base
+   *     delay after each attempt.
+   * @param initial_delay The initial delay (used as the base delay on the first
+   *     retry attempt, that is, the second attempt). Note that jitter will
+   *     still be applied, so the actual delay could be as little as
+   *     `0.5*initial_delay`.
+   * @param max_delay The maximum base delay after which no further backoff is
+   *     performed. Note that jitter will still be applied, so the actual delay
+   *     could be as much as `1.5*max_delay`.
+   */
+  ExponentialBackoff(const std::shared_ptr<util::AsyncQueue>& queue,
+                     util::TimerId timer_id,
+                     double backoff_factor,
+                     util::AsyncQueue::Milliseconds initial_delay,
+                     util::AsyncQueue::Milliseconds max_delay);
+
+  /**
+   * Instantiates the exponential backoff with the default values.
+   */
+  ExponentialBackoff(const std::shared_ptr<util::AsyncQueue>& queue,
+                     util::TimerId timer_id);
+
+  /**
+   * Resets the backoff delay.
+   *
+   * The very next `BackoffAndRun` will have no delay. If it is called again
+   * (i.e. due to an error), `initial_delay` (plus jitter) will be used, and
+   * subsequent ones will increase according to the `backoff_factor`.
+   */
+  void Reset() {
+    current_base_ = Milliseconds{0};
+  }
+
+  /**
+   * Resets the backoff to the maximum delay (e.g. for use after
+   * a RESOURCE_EXHAUSTED error).
+   */
+  void ResetToMax() {
+    current_base_ = max_delay_;
+  }
+
+  /**
+   * Waits for `current_base` seconds (which may be zero), increases the delay
+   * and runs the specified operation. If there was a pending operation waiting
+   * to be run already, it will be canceled.
+   */
+  void BackoffAndRun(util::AsyncQueue::Operation&& operation);
+
+  /** Cancels any pending backoff operation scheduled via `BackoffAndRun`. */
+  void Cancel() {
+    delayed_operation_.Cancel();
+  }
+
+ private:
+  using Milliseconds = util::AsyncQueue::Milliseconds;
+  // Returns a random value in the range [-current_base_/2, current_base_/2].
+  Milliseconds GetDelayWithJitter();
+  Milliseconds ClampDelay(Milliseconds delay) const;
+
+  std::shared_ptr<util::AsyncQueue> queue_;
+  const util::TimerId timer_id_;
+  util::DelayedOperation delayed_operation_;
+
+  const double backoff_factor_;
+  Milliseconds current_base_{0};
+  const Milliseconds initial_delay_;
+  const Milliseconds max_delay_;
+  util::SecureRandom secure_random_;
+  std::chrono::steady_clock::time_point last_attempt_time_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_EXPONENTIAL_BACKOFF_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.cc
new file mode 100644
index 0000000..a2cc162
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.cc	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+const char FirebaseMetadataProvider::kXFirebaseClientHeader[] =
+    "x-firebase-client";
+const char FirebaseMetadataProvider::kXFirebaseClientLogTypeHeader[] =
+    "x-firebase-client-log-type";
+const char FirebaseMetadataProvider::kXFirebaseGmpIdHeader[] =
+    "x-firebase-gmpid";
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.h
new file mode 100644
index 0000000..25f145f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider.h	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_H_
+
+#include <string>
+
+#include "grpcpp/client_context.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * Wraps the platform-dependent functionality associated with Firebase platform
+ * logging.
+ */
+class FirebaseMetadataProvider {
+ public:
+  static const char kXFirebaseClientHeader[];
+  static const char kXFirebaseClientLogTypeHeader[];
+  static const char kXFirebaseGmpIdHeader[];
+
+  virtual ~FirebaseMetadataProvider() = default;
+
+  /**
+   * Updates the given `context` with Firebase platform logging headers which
+   * will be sent along with the default headers to the backend.
+   */
+  virtual void UpdateMetadata(grpc::ClientContext& context) = 0;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.h
new file mode 100644
index 0000000..fdd4895
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_APPLE_H_
+#define FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_APPLE_H_
+
+#if !defined(__OBJC__)
+#error "This header only supports Objective-C++."
+#endif  // !defined(__OBJC__)
+
+#import <Foundation/Foundation.h>
+
+#include <string>
+
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRApp;
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class FirebaseMetadataProviderApple : public FirebaseMetadataProvider {
+ public:
+  explicit FirebaseMetadataProviderApple(FIRApp* app);
+
+  void UpdateMetadata(grpc::ClientContext& context) override;
+
+ private:
+  FIRApp* app_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.mm
new file mode 100644
index 0000000..23d78e9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_apple.mm	
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/firebase_metadata_provider_apple.h"
+
+#import "FirebaseCore/Sources/Private/FIRAppInternal.h"
+#import "FirebaseCore/Sources/Private/FIRHeartbeatInfo.h"
+#import "FirebaseCore/Sources/Private/FIROptionsInternal.h"
+
+#include "Firestore/core/src/util/string_apple.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+using util::MakeString;
+
+std::string GetUserAgent() {
+  return MakeString([FIRApp firebaseUserAgent]);
+}
+
+FIRHeartbeatInfoCode GetHeartbeat() {
+  return [FIRHeartbeatInfo heartbeatCodeForTag:@"fire-fst"];
+}
+
+std::string GetGmpAppId(FIRApp* app) {
+  return MakeString(app.options.googleAppID);
+}
+
+}  // namespace
+
+FirebaseMetadataProviderApple::FirebaseMetadataProviderApple(FIRApp* app)
+    : app_(app) {
+}
+
+void FirebaseMetadataProviderApple::UpdateMetadata(
+    grpc::ClientContext& context) {
+  FIRHeartbeatInfoCode heartbeat = GetHeartbeat();
+  // TODO(varconst): don't send any headers if the heartbeat is "none". This
+  // should only be changed once it's possible to notify the heartbeat that the
+  // previous attempt to send it has failed.
+  if (heartbeat != FIRHeartbeatInfoCodeNone) {
+    context.AddMetadata(kXFirebaseClientLogTypeHeader,
+                        std::to_string(heartbeat));
+  }
+
+  context.AddMetadata(kXFirebaseClientHeader, GetUserAgent());
+
+  std::string gmp_app_id = GetGmpAppId(app_);
+  if (!gmp_app_id.empty()) {
+    context.AddMetadata(kXFirebaseGmpIdHeader, gmp_app_id);
+  }
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.cc
new file mode 100644
index 0000000..84ff1b2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.cc	
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/firebase_metadata_provider_noop.h"
+
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+std::unique_ptr<FirebaseMetadataProviderNoOp>
+CreateFirebaseMetadataProviderNoOp() {
+  return absl::make_unique<FirebaseMetadataProviderNoOp>();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.h
new file mode 100644
index 0000000..13bc06a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/firebase_metadata_provider_noop.h	
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_NOOP_H_
+#define FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_NOOP_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class FirebaseMetadataProviderNoOp : public FirebaseMetadataProvider {
+ public:
+  void UpdateMetadata(grpc::ClientContext&) override {
+  }
+};
+
+std::unique_ptr<FirebaseMetadataProviderNoOp>
+CreateFirebaseMetadataProviderNoOp();
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_FIREBASE_METADATA_PROVIDER_NOOP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_call.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_call.h
new file mode 100644
index 0000000..b802076
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_call.h	
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_CALL_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_CALL_H_
+
+#include <map>
+
+#include "Firestore/core/src/util/status_fwd.h"
+#include "grpcpp/client_context.h"
+#include "grpcpp/support/string_ref.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * Contains operations common to all wrappers over gRPC calls. A wrapper is
+ * presumed to:
+ * - wrap an asynchronous gRPC call/stream;
+ * - provide some notification mechanism (such as observers or callbacks).
+ */
+class GrpcCall {
+ public:
+  using Metadata = std::multimap<grpc::string_ref, grpc::string_ref>;
+
+  virtual ~GrpcCall() = default;
+
+  /**
+   * Returns the metadata received from the server.
+   *
+   * Can only be called after the first response has been received from the
+   * server.
+   */
+  virtual Metadata GetResponseHeaders() const = 0;
+
+  /**
+   * Finishes the call gracefully. Doesn't produce a notification to any
+   * callbacks or observers.
+   */
+  virtual void FinishImmediately() = 0;
+
+  /** Finishes the call with an error, notifying any callbacks and observers. */
+  virtual void FinishAndNotify(const util::Status& status) = 0;
+
+  /** For tests only */
+  virtual grpc::ClientContext* context() = 0;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_CALL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.cc
new file mode 100644
index 0000000..a945b9e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.cc	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_completion.h"
+
+#include <memory>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using util::AsyncQueue;
+
+std::shared_ptr<GrpcCompletion> GrpcCompletion::Create(
+    Type type,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    Callback&& callback) {
+  // Construct in two steps to use the private constructor.
+  GrpcCompletion partial(type, worker_queue, std::move(callback));
+  auto completion = std::make_shared<GrpcCompletion>(std::move(partial));
+
+  // Prepare the `GrpcCompletion` for submission to gRPC.
+  //
+  // Note: this is done in a separate step because `shared_from_this` cannot be
+  // called in a constructor.
+  completion->grpc_ownership_ = completion;
+
+  return completion;
+}
+
+GrpcCompletion::GrpcCompletion(
+    Type type,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    Callback&& callback)
+    : worker_queue_{worker_queue}, callback_{std::move(callback)}, type_{type} {
+}
+
+void GrpcCompletion::Cancel() {
+  worker_queue_->VerifyIsCurrentQueue();
+  callback_ = {};
+
+  // Does not release grpc_ownership_. If gRPC still holds this completion it
+  // must remain valid to avoid a use-after-free once Complete is actually
+  // called.
+}
+
+void GrpcCompletion::WaitUntilOffQueue() {
+  worker_queue_->VerifyIsCurrentQueue();
+
+  EnsureValidFuture();
+  off_queue_future_.wait();
+}
+
+std::future_status GrpcCompletion::WaitUntilOffQueue(
+    std::chrono::milliseconds timeout) {
+  worker_queue_->VerifyIsCurrentQueue();
+
+  EnsureValidFuture();
+  return off_queue_future_.wait_for(timeout);
+}
+
+void GrpcCompletion::EnsureValidFuture() {
+  if (!off_queue_future_.valid()) {
+    off_queue_future_ = off_queue_.get_future();
+  }
+}
+
+void GrpcCompletion::Complete(bool ok) {
+  // This mechanism allows `GrpcStream` to know when the completion is off the
+  // gRPC completion queue (and thus no longer requires the underlying gRPC
+  // objects to be valid).
+  off_queue_.set_value();
+
+  // The queued operation needs to also retain this completion. It's possible
+  // for Complete to fire, shutdown to start, and then have this queued
+  // operation run. If this weren't a retain that ordering would have the
+  // callback use after free.
+  auto shared_this = grpc_ownership_;
+  worker_queue_->Enqueue([shared_this, ok] {
+    if (shared_this->callback_) {
+      shared_this->callback_(ok, shared_this);
+    }
+  });
+
+  // Having called Complete, gRPC has released its ownership interest in this
+  // object. Once the queued operation completes the `GrpcCompletion` will be
+  // deleted.
+  grpc_ownership_.reset();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.h
new file mode 100644
index 0000000..e69d4ff
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_completion.h	
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_COMPLETION_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_COMPLETION_H_
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <functional>
+#include <future>  // NOLINT(build/c++11)
+#include <memory>
+#include <utility>
+
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * A completion for a gRPC asynchronous operation that runs an arbitrary
+ * callback.
+ *
+ * All created `GrpcCompletion`s are expected to be put on the gRPC completion
+ * queue (as "tags"). `GrpcCompletion` expects that once it's received back from
+ * the gRPC completion queue, `Complete` will be called on it. `Complete`
+ * doesn't run the given callback immediately when taken off the queue; rather,
+ * it schedules running the callback on the worker queue. If the callback is no
+ * longer relevant, calling `Cancel` on the `GrpcCompletion` will turn the
+ * callback into a no-op.
+ *
+ * `GrpcCompletion` owns the objects that are used by gRPC operations for output
+ * (a `ByteBuffer` for reading a new message and a `Status` for finish
+ * operation). The buffer and/or the status may be unused by the corresponding
+ * gRPC operation.
+ *
+ * `GrpcCompletion` has shared ownership. While it has been submitted as a tag
+ * to a gRPC operation, gRPC owns it. Callers also potentially own the
+ * `GrpcCompletion` if they retain it. Once all interested parties have released
+ * their shared_ptrs, the `GrpcCompletion` is deleted.
+ *
+ * `GrpcCompletion` expects all gRPC objects pertaining to the current stream to
+ * remain valid until the `GrpcCompletion` comes back from the gRPC completion
+ * queue.
+ */
+class GrpcCompletion : public std::enable_shared_from_this<GrpcCompletion> {
+ public:
+  /**
+   * This is only to aid debugging and testing; type allows easily
+   * distinguishing between pending completions of a gRPC call.
+   */
+  enum class Type { Start, Read, Write, Finish };
+
+  /**
+   * The boolean parameter is used to indicate whether the corresponding gRPC
+   * operation finished successfully or not.
+   *
+   * The `GrpcCompletion` pointer will always point to `this`.
+   */
+  using Callback =
+      std::function<void(bool, const std::shared_ptr<GrpcCompletion>&)>;
+
+  static std::shared_ptr<GrpcCompletion> Create(
+      Type type,
+      const std::shared_ptr<util::AsyncQueue>& worker_queue,
+      Callback&& callback);
+
+  /**
+   * Marks the `GrpcCompletion` as having come back from the gRPC completion
+   * queue and puts notifying the observing stream on the Firestore async queue.
+   * The given `ok` value indicates whether the corresponding gRPC operation
+   * completed successfully.
+   *
+   * This function deletes the `GrpcCompletion`.
+   *
+   * Must be called outside of Firestore async queue.
+   */
+  void Complete(bool ok);
+
+  void Cancel();
+
+  /**
+   * Blocks until the `GrpcCompletion` comes back from the gRPC completion
+   * queue. It is important to only call this function when the `GrpcCompletion`
+   * is sure to come back from the queue quickly.
+   */
+  void WaitUntilOffQueue();
+  std::future_status WaitUntilOffQueue(std::chrono::milliseconds timeout);
+
+  grpc::ByteBuffer* message() {
+    return &message_;
+  }
+  const grpc::ByteBuffer* message() const {
+    return &message_;
+  }
+  grpc::Status* status() {
+    return &status_;
+  }
+  const grpc::Status* status() const {
+    return &status_;
+  }
+
+  Type type() const {
+    return type_;
+  }
+
+ private:
+  GrpcCompletion(Type type,
+                 const std::shared_ptr<util::AsyncQueue>& worker_queue,
+                 Callback&& callback);
+
+  void EnsureValidFuture();
+
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  Callback callback_;
+
+  // Ownership of the GrpcCompletion is shared between the Firestore gRPC
+  // wrapper object that initiated the operation (e.g., a `GrpcStream`) and gRPC
+  // itself, for as long as the completion is on the gRPC completion queue.
+  // While most of the time a completion gets removed from the gRPC completion
+  // queue first and then destroyed by the wrapper, during shutdown the gRPC
+  // wrapper can be destroyed first so in that case the completion needs to
+  // delete itself.
+  //
+  // To handle these two cases, `GrpcCompletion` is held by shared_ptr, and one
+  // shared_ptr is held here, within the `GrpcCompletion` itself to model gRPC's
+  // ownership. This works around a limitation in the gRPC API where it only
+  // accepts raw pointers for tag objects. Once this completion is completed,
+  // the grpc_ownership_ shared_ptr is reset, which models gRPC releasing its
+  // interest in the completion.
+  std::shared_ptr<GrpcCompletion> grpc_ownership_;
+
+  // Note that even though `grpc::GenericClientAsyncReaderWriter::Write` takes
+  // the byte buffer by const reference, it expects the buffer's lifetime to
+  // extend beyond `Write` (the buffer must be valid until the completion queue
+  // returns the tag associated with the write, see
+  // https://github.com/grpc/grpc/issues/13019#issuecomment-336932929, #5).
+  grpc::ByteBuffer message_;
+  grpc::Status status_;
+
+  std::promise<void> off_queue_;
+  std::future<void> off_queue_future_;
+
+  Type type_{};
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_COMPLETION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.cc
new file mode 100644
index 0000000..945785b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.cc	
@@ -0,0 +1,407 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_connection.h"
+
+#include <cstdlib>
+
+#include <algorithm>
+#include <mutex>  // NOLINT(build/c++11)
+#include <string>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/include/firebase/firestore/firestore_version.h"
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/remote/firebase_metadata_provider.h"
+#include "Firestore/core/src/remote/grpc_root_certificate_finder.h"
+#include "Firestore/core/src/util/filesystem.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "Firestore/core/src/util/warnings.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/str_cat.h"
+
+SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+#include "grpcpp/create_channel.h"
+#include "grpcpp/grpcpp.h"
+SUPPRESS_END()
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+using auth::Token;
+using core::DatabaseInfo;
+using model::DatabaseId;
+using util::Filesystem;
+using util::Path;
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+
+const char* const kAuthorizationHeader = "authorization";
+const char* const kXGoogApiClientHeader = "x-goog-api-client";
+const char* const kGoogleCloudResourcePrefix = "google-cloud-resource-prefix";
+
+std::string MakeString(absl::string_view view) {
+  return view.data() ? std::string{view.data(), view.size()} : std::string{};
+}
+
+std::shared_ptr<grpc::ChannelCredentials> CreateSslCredentials(
+    const std::string& certificate) {
+  grpc::SslCredentialsOptions options;
+  options.pem_root_certs = certificate;
+  return grpc::SslCredentials(options);
+}
+
+class HostConfig {
+  using Guard = std::lock_guard<std::mutex>;
+
+ public:
+  void set_certificate_path(const Path& new_value) {
+    Guard guard(mutex_);
+    certificate_path_ = new_value;
+  }
+  Path certificate_path() const {
+    Guard guard(mutex_);
+    return certificate_path_;
+  }
+  void set_target_name(const std::string& new_value) {
+    Guard guard(mutex_);
+    target_name_ = new_value;
+  }
+  std::string target_name() const {
+    Guard guard(mutex_);
+    return target_name_;
+  }
+  void set_use_insecure_channel(bool new_value) {
+    Guard guard(mutex_);
+    use_insecure_channel_ = new_value;
+  }
+  bool use_insecure_channel() const {
+    Guard guard(mutex_);
+    return use_insecure_channel_;
+  }
+
+ private:
+  mutable std::mutex mutex_;
+  Path certificate_path_;
+  std::string target_name_;
+  bool use_insecure_channel_ = false;
+};
+
+class HostConfigMap {
+  using ConfigByHost = std::unordered_map<std::string, HostConfig>;
+  using Guard = std::lock_guard<std::mutex>;
+
+ public:
+  /**
+   * Returns a pointer to the HostConfig entry for the given host or `nullptr`
+   * if there's no entry.
+   */
+  const HostConfig* find(const std::string& host) const {
+    Guard guard{mutex_};
+    auto iter = map_.find(host);
+    if (iter == map_.end()) {
+      return nullptr;
+    } else {
+      return &(iter->second);
+    }
+  }
+
+  void UseTestCertificate(const std::string& host,
+                          const Path& certificate_path,
+                          const std::string& target_name) {
+    HARD_ASSERT(!host.empty(), "Empty host name");
+    HARD_ASSERT(!certificate_path.native_value().empty(),
+                "Empty path to test certificate");
+    HARD_ASSERT(!target_name.empty(), "Empty SSL target name");
+
+    Guard guard(mutex_);
+    HostConfig& host_config = map_[host];
+    host_config.set_certificate_path(certificate_path);
+    host_config.set_target_name(target_name);
+  }
+
+  void UseInsecureChannel(const std::string& host) {
+    HARD_ASSERT(!host.empty(), "Empty host name");
+
+    Guard guard(mutex_);
+    HostConfig& host_config = map_[host];
+    host_config.set_use_insecure_channel(true);
+  }
+
+ private:
+  ConfigByHost map_;
+  mutable std::mutex mutex_;
+};
+
+HostConfigMap& Config() {
+  static auto* config_by_host = new HostConfigMap();
+  return *config_by_host;
+}
+
+std::string GetCppLanguageToken() {
+  const char* cpp_version = [] {
+    switch (__cplusplus) {
+      case 199711L:
+        return "1998";
+      case 201103L:
+        return "2011";
+      case 201402L:
+        return "2014";
+      case 201703L:
+        return "2017";
+      case 202002L:
+        return "2020";
+      default:
+        return "";
+    }
+  }();
+
+  return StringFormat("gl-cpp/%s", cpp_version);
+}
+
+class ClientLanguageToken {
+  using Guard = std::lock_guard<std::mutex>;
+
+ public:
+  void Set(std::string value) {
+    Guard guard(mutex_);
+    value_ = std::move(value);
+  }
+
+  std::string Get() const {
+    Guard guard(mutex_);
+    return value_;
+  }
+
+ private:
+  std::string value_ = GetCppLanguageToken();
+  mutable std::mutex mutex_;
+};
+
+ClientLanguageToken& LanguageToken() {
+  static auto* token = new ClientLanguageToken();
+  return *token;
+}
+
+void AddCloudApiHeader(grpc::ClientContext& context) {
+  auto api_tokens = StringFormat("%s fire/%s grpc/%s", LanguageToken().Get(),
+                                 kFirestoreVersionString, grpc::Version());
+  context.AddMetadata(kXGoogApiClientHeader, api_tokens);
+}
+
+#if __APPLE__
+// Disable CFStream-based transport on Apple platforms due to b/133182964, where
+// CFStream will occasionally fail to raise a has-bytes-available events,
+// causing Firestore to appear to hang.
+//
+// Use a constructor of a globally scoped object to set the `grpc_cfstream`
+// environment variable before `main` is invoked. This should be early enough
+// that it precedes any call of gRPC APIs.
+class DisableGrpcCFStream {
+ public:
+  DisableGrpcCFStream() {
+    setenv("grpc_cfstream", "0", 1);
+  }
+} disable;
+#endif  // __APPLE__
+
+}  // namespace
+
+GrpcConnection::GrpcConnection(
+    const DatabaseInfo& database_info,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    grpc::CompletionQueue* grpc_queue,
+    ConnectivityMonitor* connectivity_monitor,
+    FirebaseMetadataProvider* firebase_metadata_provider)
+    : database_info_{&database_info},
+      worker_queue_{NOT_NULL(worker_queue)},
+      grpc_queue_{NOT_NULL(grpc_queue)},
+      connectivity_monitor_{NOT_NULL(connectivity_monitor)},
+      firebase_metadata_provider_{NOT_NULL(firebase_metadata_provider)} {
+  RegisterConnectivityMonitor();
+}
+
+void GrpcConnection::Shutdown() {
+  // Fast finish any pending calls. This will not trigger the observers.
+  // Calls may unregister themselves on finish, so make a protective copy.
+  auto active_calls = active_calls_;
+  for (GrpcCall* call : active_calls) {
+    call->FinishImmediately();
+  }
+}
+
+std::unique_ptr<grpc::ClientContext> GrpcConnection::CreateContext(
+    const Token& credential) const {
+  absl::string_view token = credential.user().is_authenticated()
+                                ? credential.token()
+                                : absl::string_view{};
+
+  auto context = absl::make_unique<grpc::ClientContext>();
+  if (token.data()) {
+    context->AddMetadata(kAuthorizationHeader, absl::StrCat("Bearer ", token));
+  }
+
+  AddCloudApiHeader(*context);
+  firebase_metadata_provider_->UpdateMetadata(*context);
+
+  // This header is used to improve routing and project isolation by the
+  // backend.
+  const DatabaseId& db_id = database_info_->database_id();
+  context->AddMetadata(kGoogleCloudResourcePrefix,
+                       StringFormat("projects/%s/databases/%s",
+                                    db_id.project_id(), db_id.database_id()));
+  return context;
+}
+
+void GrpcConnection::EnsureActiveStub() {
+  // TODO(varconst): find out in which cases a gRPC channel might shut down.
+  // This might be overkill.
+  if (!grpc_channel_ || grpc_channel_->GetState(/*try_to_connect=*/false) ==
+                            GRPC_CHANNEL_SHUTDOWN) {
+    LOG_DEBUG("Creating Firestore stub.");
+    grpc_channel_ = CreateChannel();
+    grpc_stub_ = absl::make_unique<grpc::GenericStub>(grpc_channel_);
+  }
+}
+
+std::shared_ptr<grpc::Channel> GrpcConnection::CreateChannel() const {
+  const std::string& host = database_info_->host();
+
+  grpc::ChannelArguments args;
+  // Ensure gRPC recovers from a dead connection. (Not typically necessary, as
+  // the OS will usually notify gRPC when a connection dies. But not always.
+  // This acts as a failsafe.)
+  args.SetInt(GRPC_ARG_KEEPALIVE_TIME_MS, 30 * 1000);
+
+  const HostConfig* host_config = Config().find(host);
+  if (!host_config) {
+    std::string root_certificate = LoadGrpcRootCertificate();
+    return grpc::CreateCustomChannel(
+        host, CreateSslCredentials(root_certificate), args);
+  }
+
+  // For the case when `Settings.set_ssl_enabled(false)`.
+  if (host_config->use_insecure_channel()) {
+    return grpc::CreateCustomChannel(host, grpc::InsecureChannelCredentials(),
+                                     args);
+  }
+
+  // For tests only
+  auto* fs = Filesystem::Default();
+  args.SetSslTargetNameOverride(host_config->target_name());
+  Path path = host_config->certificate_path();
+  StatusOr<std::string> test_certificate = fs->ReadFile(path);
+  HARD_ASSERT(test_certificate.ok(),
+              StringFormat("Unable to open root certificates at file path %s",
+                           path.ToUtf8String())
+                  .c_str());
+
+  return grpc::CreateCustomChannel(
+      host, CreateSslCredentials(test_certificate.ValueOrDie()), args);
+}
+
+std::unique_ptr<GrpcStream> GrpcConnection::CreateStream(
+    absl::string_view rpc_name,
+    const Token& token,
+    GrpcStreamObserver* observer) {
+  EnsureActiveStub();
+
+  auto context = CreateContext(token);
+  auto call =
+      grpc_stub_->PrepareCall(context.get(), MakeString(rpc_name), grpc_queue_);
+  return absl::make_unique<GrpcStream>(std::move(context), std::move(call),
+                                       worker_queue_, this, observer);
+}
+
+std::unique_ptr<GrpcUnaryCall> GrpcConnection::CreateUnaryCall(
+    absl::string_view rpc_name,
+    const Token& token,
+    const grpc::ByteBuffer& message) {
+  EnsureActiveStub();
+
+  auto context = CreateContext(token);
+  auto call = grpc_stub_->PrepareUnaryCall(context.get(), MakeString(rpc_name),
+                                           message, grpc_queue_);
+  return absl::make_unique<GrpcUnaryCall>(std::move(context), std::move(call),
+                                          worker_queue_, this, message);
+}
+
+std::unique_ptr<GrpcStreamingReader> GrpcConnection::CreateStreamingReader(
+    absl::string_view rpc_name,
+    const Token& token,
+    const grpc::ByteBuffer& message) {
+  EnsureActiveStub();
+
+  auto context = CreateContext(token);
+  auto call =
+      grpc_stub_->PrepareCall(context.get(), MakeString(rpc_name), grpc_queue_);
+  return absl::make_unique<GrpcStreamingReader>(
+      std::move(context), std::move(call), worker_queue_, this, message);
+}
+
+void GrpcConnection::RegisterConnectivityMonitor() {
+  connectivity_monitor_->AddCallback(
+      [this](ConnectivityMonitor::NetworkStatus /*ignored*/) {
+        // Calls may unregister themselves on finish, so make a protective copy.
+        auto calls = active_calls_;
+        for (GrpcCall* call : calls) {
+          // This will trigger the observers.
+          call->FinishAndNotify(
+              Status{Error::kErrorUnavailable, "Network connectivity changed"});
+        }
+        // The old channel may hang for a long time trying to reestablish
+        // connection before eventually failing. Note that gRPC Objective-C
+        // client does the same thing:
+        // https://github.com/grpc/grpc/blob/fe11db09575f2dfbe1f88cd44bd417acc168e354/src/objective-c/GRPCClient/private/GRPCHost.m#L309-L314
+        grpc_channel_.reset();
+      });
+}
+
+void GrpcConnection::Register(GrpcCall* call) {
+  active_calls_.push_back(call);
+}
+
+void GrpcConnection::Unregister(GrpcCall* call) {
+  auto found = std::find(active_calls_.begin(), active_calls_.end(), call);
+  HARD_ASSERT(found != active_calls_.end(), "Missing a gRPC call");
+  active_calls_.erase(found);
+}
+
+void GrpcConnection::SetClientLanguage(std::string language_token) {
+  LanguageToken().Set(std::move(language_token));
+}
+
+void GrpcConnection::UseInsecureChannel(const std::string& host) {
+  Config().UseInsecureChannel(host);
+}
+
+void GrpcConnection::UseTestCertificate(const std::string& host,
+                                        const Path& certificate_path,
+                                        const std::string& target_name) {
+  Config().UseTestCertificate(host, certificate_path, target_name);
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.h
new file mode 100644
index 0000000..1039331
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_connection.h	
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_CONNECTION_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_CONNECTION_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/remote/connectivity_monitor.h"
+#include "Firestore/core/src/remote/grpc_call.h"
+#include "Firestore/core/src/remote/grpc_stream.h"
+#include "Firestore/core/src/remote/grpc_stream_observer.h"
+#include "Firestore/core/src/remote/grpc_streaming_reader.h"
+#include "Firestore/core/src/remote/grpc_unary_call.h"
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/warnings.h"
+#include "absl/strings/string_view.h"
+#include "grpcpp/channel.h"
+#include "grpcpp/client_context.h"
+#include "grpcpp/completion_queue.h"
+
+SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+#include "grpcpp/generic/generic_stub.h"
+SUPPRESS_END()
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class FirebaseMetadataProvider;
+
+// PORTING NOTE: this class has limited resemblance to `GrpcConnection` in Web
+// client. However, unlike Web client, it's not meant to hide different
+// implementations of a `Connection` under a single interface.
+
+/**
+ * Creates and owns gRPC objects (channel and stub) necessary to produce a
+ * `GrpcStream`.
+ */
+class GrpcConnection {
+ public:
+  GrpcConnection(const core::DatabaseInfo& database_info,
+                 const std::shared_ptr<util::AsyncQueue>& worker_queue,
+                 grpc::CompletionQueue* grpc_queue,
+                 ConnectivityMonitor* connectivity_monitor,
+                 FirebaseMetadataProvider* firebase_metadata_provider);
+
+  void Shutdown();
+
+  /**
+   * Creates a stream to the given stream RPC endpoint. The resulting stream
+   * needs to be `Start`ed before it can be used.
+   */
+  // PORTING NOTE: unlike Web client, the created stream is not open and has to
+  // be started manually.
+  std::unique_ptr<GrpcStream> CreateStream(absl::string_view rpc_name,
+                                           const auth::Token& token,
+                                           GrpcStreamObserver* observer);
+
+  std::unique_ptr<GrpcUnaryCall> CreateUnaryCall(
+      absl::string_view rpc_name,
+      const auth::Token& token,
+      const grpc::ByteBuffer& message);
+
+  std::unique_ptr<GrpcStreamingReader> CreateStreamingReader(
+      absl::string_view rpc_name,
+      const auth::Token& token,
+      const grpc::ByteBuffer& message);
+
+  void Register(GrpcCall* call);
+  void Unregister(GrpcCall* call);
+
+  static void SetClientLanguage(std::string language_token);
+
+  /**
+   * Don't use SSL, send all traffic unencrypted. Call before creating any
+   * streams or calls.
+   */
+  static void UseInsecureChannel(const std::string& host);
+
+  /**
+   * For tests only: use a custom root certificate file and the given SSL
+   * target name for all connections. Call before creating any streams or calls.
+   */
+  static void UseTestCertificate(const std::string& host,
+                                 const util::Path& certificate_path,
+                                 const std::string& target_name);
+
+ private:
+  std::unique_ptr<grpc::ClientContext> CreateContext(
+      const auth::Token& credential) const;
+  std::shared_ptr<grpc::Channel> CreateChannel() const;
+  void EnsureActiveStub();
+
+  void RegisterConnectivityMonitor();
+
+  const core::DatabaseInfo* database_info_ = nullptr;
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  grpc::CompletionQueue* grpc_queue_ = nullptr;
+
+  std::shared_ptr<grpc::Channel> grpc_channel_;
+  std::unique_ptr<grpc::GenericStub> grpc_stub_;
+
+  ConnectivityMonitor* connectivity_monitor_ = nullptr;
+  std::vector<GrpcCall*> active_calls_;
+
+  FirebaseMetadataProvider* firebase_metadata_provider_ = nullptr;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_CONNECTION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.cc
new file mode 100644
index 0000000..1b3004e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.cc	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_nanopb.h"
+
+#include <vector>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "Firestore/core/src/remote/grpc_util.h"
+#include "Firestore/core/src/util/status.h"
+#include "grpcpp/support/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using nanopb::ByteString;
+using nanopb::ByteStringWriter;
+using util::Status;
+
+ByteBufferReader::ByteBufferReader(const grpc::ByteBuffer& buffer) {
+  std::vector<grpc::Slice> slices;
+  grpc::Status status = buffer.Dump(&slices);
+  // Conversion may fail if compression is used and gRPC tries to decompress an
+  // ill-formed buffer.
+  if (!status.ok()) {
+    Status error{Error::kErrorInternal,
+                 "Trying to convert an invalid grpc::ByteBuffer"};
+    error.CausedBy(ConvertStatus(status));
+    set_status(error);
+    return;
+  }
+
+  ByteStringWriter writer;
+  writer.Reserve(buffer.Length());
+  for (const auto& slice : slices) {
+    writer.Append(slice.begin(), slice.size());
+  }
+
+  bytes_ = writer.Release();
+  stream_ = pb_istream_from_buffer(bytes_.data(), bytes_.size());
+}
+
+void ByteBufferReader::Read(const pb_field_t* fields, void* dest_struct) {
+  if (!ok()) return;
+
+  if (!pb_decode(&stream_, fields, dest_struct)) {
+    Fail(PB_GET_ERROR(&stream_));
+  }
+}
+
+namespace {
+
+bool AppendToGrpcBuffer(pb_ostream_t* stream,
+                        const pb_byte_t* buf,
+                        size_t count) {
+  auto buffer = static_cast<std::vector<grpc::Slice>*>(stream->state);
+  buffer->emplace_back(buf, count);
+  return true;
+}
+
+}  // namespace
+
+ByteBufferWriter::ByteBufferWriter() {
+  stream_.callback = AppendToGrpcBuffer;
+  stream_.state = &buffer_;
+  stream_.max_size = SIZE_MAX;
+}
+
+grpc::ByteBuffer ByteBufferWriter::Release() {
+  grpc::ByteBuffer result{buffer_.data(), buffer_.size()};
+  buffer_.clear();
+  return result;
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.h
new file mode 100644
index 0000000..df9fae0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_nanopb.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_NANOPB_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_NANOPB_H_
+
+#include <pb.h>
+#include <pb_decode.h>
+
+#include <vector>
+
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/** A `Reader` that reads from the given `grpc::ByteBuffer`. */
+class ByteBufferReader : public nanopb::Reader {
+ public:
+  /**
+   * Copies the given `buffer` and associates the resulting stream with this
+   * `ByteBufferReader`.
+   */
+  // TODO(varconst): avoid copying the buffer.
+  explicit ByteBufferReader(const grpc::ByteBuffer& buffer);
+
+  void Read(const pb_field_t* fields, void* dest_struct) override;
+
+ private:
+  nanopb::ByteString bytes_;
+  pb_istream_t stream_{};
+};
+
+/** A `Writer` that writes into a `grpc::ByteBuffer`. */
+class ByteBufferWriter : public nanopb::Writer {
+ public:
+  ByteBufferWriter();
+
+  grpc::ByteBuffer Release();
+
+ private:
+  std::vector<grpc::Slice> buffer_;
+};
+
+/**
+ * Serializes the given `message` into a `grpc::ByteBuffer`.
+ *
+ * The lifetime of the return value is entirely independent of the `message`.
+ */
+template <typename T>
+grpc::ByteBuffer MakeByteBuffer(const nanopb::Message<T>& message) {
+  ByteBufferWriter writer;
+  writer.Write(message.fields(), message.get());
+  return writer.Release();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_NANOPB_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder.h
new file mode 100644
index 0000000..3cc7db1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATE_FINDER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATE_FINDER_H_
+
+#include <string>
+
+#include "Firestore/core/src/util/path.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * Finds the file containing gRPC root certificates (how it is stored differs by
+ * platform) and returns its contents as a string. Will trigger assertion
+ * failure if the file cannot be found or open.
+ */
+std::string LoadGrpcRootCertificate();
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATE_FINDER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder_generated.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder_generated.cc
new file mode 100644
index 0000000..1c10eea
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificate_finder_generated.cc	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * This implementation presumes that `roots.pem` has been embedded into the
+ * binary during the build and is accessible as a char array named
+ * `grpc_root_certificates`.
+ */
+
+#include "Firestore/core/src/remote/grpc_root_certificate_finder.h"
+
+#include "Firestore/core/src/remote/grpc_root_certificates_generated.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+std::string LoadGrpcRootCertificate() {
+  return {reinterpret_cast<const char*>(grpc_root_certificates_generated_data),
+          grpc_root_certificates_generated_size};
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.cc
new file mode 100644
index 0000000..cc73bd7
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.cc	
@@ -0,0 +1,23712 @@
+// Copyright 2019 Google Inc. All Rights Reserved.
+
+#include "Firestore/core/src/remote/grpc_root_certificates_generated.h"
+
+#include <cstdlib>
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+extern const size_t grpc_root_certificates_generated_size;
+extern const char roots_filename[];
+extern const unsigned char grpc_root_certificates_generated_data[];
+
+const unsigned char grpc_root_certificates_generated_data[] = {
+    0x23, 0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x53, 0x6f, 0x75, 0x72, 0x63,
+    0x65, 0x20, 0x43, 0x6f, 0x64, 0x65, 0x20, 0x46, 0x6f, 0x72, 0x6d, 0x20,
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+    0x6f, 0x20, 0x74, 0x68, 0x65, 0x20, 0x74, 0x65, 0x72, 0x6d, 0x73, 0x20,
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+    0x50, 0x4f, 0x72, 0x59, 0x73, 0x34, 0x51, 0x6a, 0x62, 0x52, 0x61, 0x5a,
+    0x49, 0x78, 0x6f, 0x77, 0x4c, 0x42, 0x79, 0x51, 0x7a, 0x54, 0x53, 0x0a,
+    0x47, 0x77, 0x76, 0x32, 0x4c, 0x46, 0x50, 0x53, 0x79, 0x70, 0x42, 0x4c,
+    0x68, 0x6d, 0x62, 0x38, 0x71, 0x6f, 0x4d, 0x69, 0x39, 0x49, 0x73, 0x61,
+    0x62, 0x79, 0x5a, 0x49, 0x72, 0x48, 0x5a, 0x33, 0x43, 0x4c, 0x2f, 0x46,
+    0x6d, 0x46, 0x7a, 0x30, 0x4a, 0x6f, 0x6d, 0x65, 0x65, 0x38, 0x4f, 0x35,
+    0x5a, 0x44, 0x49, 0x42, 0x66, 0x39, 0x50, 0x44, 0x33, 0x56, 0x68, 0x74,
+    0x37, 0x4c, 0x47, 0x72, 0x0a, 0x68, 0x46, 0x56, 0x30, 0x64, 0x34, 0x51,
+    0x45, 0x4a, 0x31, 0x4a, 0x72, 0x68, 0x6b, 0x7a, 0x4f, 0x33, 0x62, 0x6c,
+    0x6c, 0x2f, 0x39, 0x62, 0x47, 0x58, 0x70, 0x2b, 0x61, 0x45, 0x4a, 0x6c,
+    0x4c, 0x64, 0x57, 0x72, 0x2b, 0x61, 0x75, 0x6d, 0x58, 0x49, 0x4f, 0x54,
+    0x6b, 0x64, 0x6e, 0x72, 0x47, 0x30, 0x43, 0x53, 0x71, 0x6b, 0x4d, 0x30,
+    0x67, 0x6b, 0x4c, 0x70, 0x48, 0x5a, 0x50, 0x74, 0x2f, 0x0a, 0x42, 0x37,
+    0x4e, 0x54, 0x65, 0x4c, 0x55, 0x4b, 0x59, 0x76, 0x4a, 0x7a, 0x51, 0x38,
+    0x35, 0x42, 0x4b, 0x34, 0x46, 0x71, 0x4c, 0x6f, 0x55, 0x57, 0x6c, 0x46,
+    0x50, 0x55, 0x61, 0x31, 0x39, 0x79, 0x49, 0x71, 0x74, 0x52, 0x4c, 0x55,
+    0x4c, 0x56, 0x41, 0x4a, 0x79, 0x5a, 0x76, 0x39, 0x36, 0x37, 0x6c, 0x44,
+    0x74, 0x58, 0x2f, 0x5a, 0x72, 0x31, 0x68, 0x73, 0x74, 0x57, 0x4f, 0x31,
+    0x75, 0x49, 0x0a, 0x41, 0x65, 0x56, 0x38, 0x4b, 0x45, 0x73, 0x44, 0x2b,
+    0x55, 0x6d, 0x44, 0x66, 0x4c, 0x4a, 0x2f, 0x66, 0x4f, 0x50, 0x74, 0x6a,
+    0x71, 0x46, 0x2f, 0x59, 0x46, 0x4f, 0x4f, 0x56, 0x5a, 0x31, 0x51, 0x4e,
+    0x42, 0x49, 0x50, 0x74, 0x35, 0x64, 0x37, 0x62, 0x49, 0x64, 0x4b, 0x52,
+    0x4f, 0x66, 0x31, 0x62, 0x65, 0x79, 0x41, 0x4e, 0x2f, 0x42, 0x59, 0x47,
+    0x57, 0x35, 0x4b, 0x61, 0x48, 0x62, 0x77, 0x0a, 0x48, 0x35, 0x4c, 0x6b,
+    0x36, 0x72, 0x57, 0x53, 0x30, 0x32, 0x46, 0x52, 0x45, 0x41, 0x75, 0x74,
+    0x70, 0x39, 0x6c, 0x66, 0x78, 0x31, 0x2f, 0x63, 0x48, 0x36, 0x4e, 0x63,
+    0x6a, 0x4b, 0x46, 0x2b, 0x6d, 0x37, 0x65, 0x65, 0x30, 0x31, 0x5a, 0x76,
+    0x5a, 0x6c, 0x34, 0x48, 0x6c, 0x69, 0x44, 0x74, 0x43, 0x33, 0x54, 0x37,
+    0x5a, 0x6b, 0x36, 0x4c, 0x45, 0x52, 0x58, 0x70, 0x67, 0x55, 0x6c, 0x2b,
+    0x0a, 0x62, 0x37, 0x44, 0x55, 0x55, 0x48, 0x38, 0x69, 0x31, 0x31, 0x39,
+    0x6c, 0x41, 0x67, 0x32, 0x6d, 0x39, 0x49, 0x55, 0x65, 0x32, 0x4b, 0x34,
+    0x47, 0x53, 0x30, 0x71, 0x6e, 0x30, 0x6a, 0x46, 0x6d, 0x77, 0x76, 0x6a,
+    0x4f, 0x35, 0x51, 0x69, 0x6d, 0x70, 0x41, 0x4b, 0x57, 0x52, 0x47, 0x68,
+    0x58, 0x78, 0x4e, 0x55, 0x7a, 0x7a, 0x78, 0x6b, 0x76, 0x46, 0x4d, 0x53,
+    0x55, 0x48, 0x48, 0x75, 0x6b, 0x0a, 0x32, 0x66, 0x43, 0x66, 0x44, 0x72,
+    0x47, 0x41, 0x34, 0x74, 0x47, 0x65, 0x45, 0x57, 0x53, 0x70, 0x69, 0x42,
+    0x45, 0x36, 0x64, 0x6f, 0x4c, 0x6c, 0x59, 0x73, 0x4b, 0x41, 0x32, 0x4b,
+    0x53, 0x44, 0x37, 0x5a, 0x50, 0x76, 0x66, 0x43, 0x2b, 0x51, 0x73, 0x44,
+    0x4a, 0x4d, 0x6c, 0x68, 0x56, 0x6f, 0x53, 0x46, 0x4c, 0x55, 0x6d, 0x51,
+    0x6a, 0x41, 0x4a, 0x4f, 0x67, 0x63, 0x34, 0x37, 0x4f, 0x6c, 0x0a, 0x49,
+    0x51, 0x36, 0x53, 0x77, 0x4a, 0x41, 0x66, 0x7a, 0x79, 0x42, 0x66, 0x79,
+    0x6a, 0x73, 0x34, 0x78, 0x37, 0x64, 0x74, 0x4f, 0x76, 0x50, 0x6d, 0x52,
+    0x4c, 0x67, 0x4f, 0x4d, 0x57, 0x75, 0x49, 0x6a, 0x6e, 0x44, 0x72, 0x6e,
+    0x42, 0x64, 0x53, 0x71, 0x45, 0x47, 0x55, 0x4c, 0x6f, 0x65, 0x32, 0x35,
+    0x36, 0x59, 0x53, 0x78, 0x58, 0x58, 0x66, 0x57, 0x38, 0x41, 0x4b, 0x62,
+    0x6e, 0x75, 0x6b, 0x0a, 0x35, 0x46, 0x36, 0x47, 0x2b, 0x54, 0x61, 0x55,
+    0x33, 0x33, 0x66, 0x44, 0x36, 0x51, 0x33, 0x41, 0x4f, 0x66, 0x46, 0x35,
+    0x75, 0x30, 0x61, 0x4f, 0x71, 0x30, 0x4e, 0x5a, 0x4a, 0x37, 0x63, 0x67,
+    0x75, 0x79, 0x50, 0x70, 0x56, 0x6b, 0x41, 0x68, 0x37, 0x44, 0x45, 0x39,
+    0x5a, 0x61, 0x70, 0x44, 0x38, 0x6a, 0x33, 0x66, 0x63, 0x45, 0x54, 0x68,
+    0x75, 0x6b, 0x30, 0x6d, 0x45, 0x44, 0x75, 0x59, 0x0a, 0x6e, 0x2f, 0x50,
+    0x49, 0x6a, 0x68, 0x73, 0x34, 0x56, 0x69, 0x46, 0x71, 0x55, 0x5a, 0x50,
+    0x54, 0x6b, 0x63, 0x70, 0x47, 0x32, 0x6f, 0x6d, 0x33, 0x50, 0x56, 0x4f,
+    0x44, 0x4c, 0x41, 0x67, 0x66, 0x69, 0x34, 0x39, 0x54, 0x33, 0x66, 0x2b,
+    0x73, 0x48, 0x77, 0x3d, 0x3d, 0x0a, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x45,
+    0x4e, 0x44, 0x20, 0x43, 0x45, 0x52, 0x54, 0x49, 0x46, 0x49, 0x43, 0x41,
+    0x54, 0x45, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x0a,
+    0x00  // Extra \0 to make it a C string
+};
+
+const size_t grpc_root_certificates_generated_size =
+    sizeof(grpc_root_certificates_generated_data) - 1;
+
+const char roots_filename[] = "roots.pem";
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.h
new file mode 100644
index 0000000..29cf7e4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_root_certificates_generated.h	
@@ -0,0 +1,20 @@
+// Copyright 2019 Google Inc. All Rights Reserved.
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATES_GENERATED_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATES_GENERATED_H_
+
+#include <stddef.h>
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+extern const size_t grpc_root_certificates_generated_size;
+extern const unsigned char grpc_root_certificates_generated_data[];
+extern const char roots_filename[];
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_ROOT_CERTIFICATES_GENERATED_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.cc
new file mode 100644
index 0000000..638318b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.cc	
@@ -0,0 +1,362 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_stream.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <future>  // NOLINT(build/c++11)
+
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/grpc_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using util::AsyncQueue;
+using util::Status;
+using Type = GrpcCompletion::Type;
+
+// When invoking an async gRPC method, `GrpcStream` will create a new
+// `GrpcCompletion` and use it as a tag to put on the gRPC completion queue.
+// `GrpcStream` does not have a reference to the gRPC completion queue (this
+// allows using the same completion queue for all streams); it expects that some
+// different class (in practice, `RemoteStore`) will poll the gRPC completion
+// queue and `Complete` all `GrpcCompletion`s that come out of the queue.
+// `GrpcCompletion::Complete` will invoke the callback given to it by this
+// `GrpcStream`. In turn, `GrpcStream` will decide whether to notify its
+// observer.
+//
+// `GrpcStream` owns the gRPC objects (such as `grpc::ClientContext`) that must
+// be valid until all `GrpcCompletion`s issued by this stream come back from the
+// gRPC completion queue. `GrpcCompletion`s contain an `std::promise` that is
+// fulfilled once the completion is taken off the gRPC completion queue, and
+// `GrpcCompletion::WaitUntilOffQueue` allows blocking on this. `GrpcStream`
+// holds non-owning pointers to all the completions that it issued (and removes
+// pointers to completions once they ran). `GrpcStream::Finish` and
+// `GrpcStream::WriteAndFinish` block on `GrpcCompletion::WaitUntilOffQueue` for
+// all the currently-pending completions, thus ensuring that the stream can be
+// safely released (along with the gRPC objects the stream owns) after `Finish`
+// or `WriteAndFinish` have completed.
+
+namespace internal {
+
+absl::optional<BufferedWrite> BufferedWriter::EnqueueWrite(
+    grpc::ByteBuffer&& message, const grpc::WriteOptions& options) {
+  queue_.push({std::move(message), options});
+  return TryStartWrite();
+}
+
+absl::optional<BufferedWrite> BufferedWriter::TryStartWrite() {
+  if (queue_.empty() || has_active_write_) {
+    return absl::nullopt;
+  }
+
+  has_active_write_ = true;
+  BufferedWrite message = std::move(queue_.front());
+  queue_.pop();
+  return {std::move(message)};
+}
+
+absl::optional<BufferedWrite> BufferedWriter::DequeueNextWrite() {
+  has_active_write_ = false;
+  return TryStartWrite();
+}
+
+}  // namespace internal
+
+using internal::BufferedWrite;
+
+GrpcStream::GrpcStream(
+    std::unique_ptr<grpc::ClientContext> context,
+    std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    GrpcConnection* grpc_connection,
+    GrpcStreamObserver* observer)
+    : context_{std::move(NOT_NULL(context))},
+      call_{std::move(NOT_NULL(call))},
+      worker_queue_{NOT_NULL(worker_queue)},
+      grpc_connection_{NOT_NULL(grpc_connection)},
+      observer_{NOT_NULL(observer)} {
+  grpc_connection_->Register(this);
+}
+
+GrpcStream::~GrpcStream() {
+  LOG_DEBUG("GrpcStream('%s'): destroying stream", this);
+  HARD_ASSERT(completions_.empty(),
+              "GrpcStream is being destroyed without proper shutdown");
+  MaybeUnregister();
+}
+
+void GrpcStream::Start() {
+  // Make starting a quick operation that avoids a roundtrip to the server by
+  // skipping the wait for initial server metadata (instead, it will be
+  // automatically coalesced with the first write operation).
+  context_->set_initial_metadata_corked(true);
+  // It's generally okay to pass a null pointer as a tag; in this case in
+  // particular, the tag will never come back from the completion queue (by
+  // design).
+  call_->StartCall(nullptr);
+
+  if (observer_) {
+    // Start listening for new messages.
+    // Order is important here -- any call to observer can potentially end this
+    // stream's lifetime, so call `Read` before notifying.
+    Read();
+    observer_->OnStreamStart();
+  }
+}
+
+void GrpcStream::Read() {
+  if (!observer_) {
+    return;
+  }
+
+  auto completion = NewCompletion(
+      Type::Read, [this](const std::shared_ptr<GrpcCompletion>& completion) {
+        OnRead(*completion->message());
+      });
+  call_->Read(completion->message(), completion.get());
+}
+
+void GrpcStream::Write(grpc::ByteBuffer&& message) {
+  MaybeWrite(buffered_writer_.EnqueueWrite(std::move(message)));
+}
+
+void GrpcStream::WriteLast(grpc::ByteBuffer&& message) {
+  grpc::WriteOptions options;
+  options.set_last_message();
+  MaybeWrite(buffered_writer_.EnqueueWrite(std::move(message), options));
+}
+
+void GrpcStream::MaybeWrite(absl::optional<BufferedWrite> maybe_write) {
+  if (!maybe_write) {
+    return;
+  }
+
+  BufferedWrite write = std::move(maybe_write).value();
+  auto completion = NewCompletion(
+      Type::Write,
+      [this](const std::shared_ptr<GrpcCompletion>&) { OnWrite(); });
+  *completion->message() = write.message;
+
+  call_->Write(*completion->message(), write.options, completion.get());
+}
+
+void GrpcStream::FinishImmediately() {
+  LOG_DEBUG("GrpcStream('%s'): finishing without notifying observers", this);
+
+  Shutdown();
+  UnsetObserver();
+}
+
+void GrpcStream::FinishAndNotify(const Status& status) {
+  LOG_DEBUG("GrpcStream('%s'): finishing and notifying observers", this);
+
+  Shutdown();
+
+  if (observer_) {
+    // The call to observer could end this `GrpcStream`'s lifetime, so make
+    // a protective copy.
+    GrpcStreamObserver* observer = observer_;
+    UnsetObserver();
+    observer->OnStreamFinish(status);
+  }
+}
+
+void GrpcStream::Shutdown() {
+  LOG_DEBUG("GrpcStream('%s'): shutting down; completions: %s, is finished: %s",
+            this, completions_.size(), is_grpc_call_finished_);
+
+  MaybeUnregister();
+
+  // If completions are empty but the call hasn't been finished, it means this
+  // stream has never started. Calling `Finish` on the underlying gRPC call is
+  // invalid if it wasn't started previously.
+  if (!completions_.empty() && !is_grpc_call_finished_) {
+    // Important: during normal operation, the stream always has a pending read
+    // operation, so `Shutdown` would hang indefinitely if we didn't cancel the
+    // `context_`. However, if the stream has already failed, avoid cancelling
+    // the context to avoid overwriting the status captured during the
+    // `OnOperationFailed`.
+
+    context_->TryCancel();
+    FinishGrpcCall({});
+  }
+
+  // Drain the completions -- `Shutdown` guarantees to bring the stream into
+  // destructible state. Two possibilities here:
+  // - completions are empty -- nothing to block on;
+  // - the only completion is "finish" (whether enqueued by this function or
+  //   previously) -- "finish" is a very fast operation.
+  FastFinishCompletionsBlocking();
+}
+
+void GrpcStream::MaybeUnregister() {
+  if (grpc_connection_) {
+    grpc_connection_->Unregister(this);
+    grpc_connection_ = nullptr;
+  }
+}
+
+void GrpcStream::FinishGrpcCall(const OnSuccess& callback) {
+  LOG_DEBUG("GrpcStream('%s'): finishing the underlying call", this);
+
+  HARD_ASSERT(!is_grpc_call_finished_, "FinishGrpcCall called twice");
+  is_grpc_call_finished_ = true;
+
+  // All completions issued by this call must be taken off the queue before
+  // finish operation can be enqueued.
+  FastFinishCompletionsBlocking();
+  auto completion = NewCompletion(Type::Finish, callback);
+  call_->Finish(completion->status(), completion.get());
+}
+
+void GrpcStream::FastFinishCompletionsBlocking() {
+  LOG_DEBUG("GrpcStream('%s'): fast finishing %s completion(s)", this,
+            completions_.size());
+
+  // TODO(varconst): reset buffered_writer_? Should not be necessary, because it
+  // should never be called again after a call to Finish.
+
+  for (const auto& completion : completions_) {
+    // `GrpcStream` cannot actually remove any of the completions that already
+    // have been enqueued on the worker queue, so instead turn them into no-ops.
+    completion->Cancel();
+  }
+
+  for (const auto& completion : completions_) {
+    // This is blocking.
+    completion->WaitUntilOffQueue();
+  }
+
+  // This will release all the shared pointers to GrpcCompletion, leaving it
+  // up to gRPC to actually call Complete and trigger deletion.
+  completions_.clear();
+}
+
+bool GrpcStream::WriteAndFinish(grpc::ByteBuffer&& message) {
+  bool did_last_write = false;
+  if (!is_grpc_call_finished_) {
+    did_last_write = TryLastWrite(std::move(message));
+  }
+  FinishImmediately();
+  return did_last_write;
+}
+
+bool GrpcStream::TryLastWrite(grpc::ByteBuffer&& message) {
+  absl::optional<BufferedWrite> maybe_write =
+      buffered_writer_.EnqueueWrite(std::move(message));
+  // Only bother with the last write if there is no active write at the moment.
+  if (!maybe_write) {
+    return false;
+  }
+
+  BufferedWrite last_write = std::move(maybe_write).value();
+  auto completion = NewCompletion(Type::Write, {});
+  *completion->message() = last_write.message;
+  call_->WriteLast(*completion->message(), grpc::WriteOptions{},
+                   completion.get());
+
+  // Empirically, the write normally takes less than a millisecond to finish
+  // (both with and without network connection), and never more than several
+  // dozen milliseconds. Nevertheless, ensure `WriteAndFinish` doesn't hang if
+  // there happen to be circumstances under which the write may block
+  // indefinitely (in that case, rely on the fact that cancelling a gRPC call
+  // makes all pending operations come back from the queue quickly).
+
+  auto status = completion->WaitUntilOffQueue(std::chrono::milliseconds(500));
+  return status == std::future_status::ready;
+}
+
+GrpcStream::Metadata GrpcStream::GetResponseHeaders() const {
+  return context_->GetServerInitialMetadata();
+}
+
+// Callbacks
+
+void GrpcStream::OnRead(const grpc::ByteBuffer& message) {
+  if (observer_) {
+    // Continue waiting for new messages indefinitely as long as there is an
+    // interested observer.
+    // Order is important here -- any call to observer can potentially end this
+    // stream's lifetime, so call `Read` before notifying.
+    Read();
+    observer_->OnStreamRead(message);
+  }
+}
+
+void GrpcStream::OnWrite() {
+  if (observer_) {
+    MaybeWrite(buffered_writer_.DequeueNextWrite());
+    // Observer is not interested in this event.
+  }
+}
+
+void GrpcStream::OnOperationFailed() {
+  if (is_grpc_call_finished_) {
+    // If a finish operation has been enqueued already (possibly by a previous
+    // failed operation), there's nothing to do.
+    return;
+  }
+
+  FinishGrpcCall([this](const std::shared_ptr<GrpcCompletion>& completion) {
+    Status status = ConvertStatus(*completion->status());
+    FinishAndNotify(status);
+  });
+}
+
+void GrpcStream::RemoveCompletion(
+    const std::shared_ptr<GrpcCompletion>& to_remove) {
+  auto found = std::find(completions_.begin(), completions_.end(), to_remove);
+  HARD_ASSERT(found != completions_.end(), "Missing GrpcCompletion");
+  completions_.erase(found);
+}
+
+std::shared_ptr<GrpcCompletion> GrpcStream::NewCompletion(
+    Type tag, const OnSuccess& on_success) {
+  // Can't move into lambda until C++14.
+  GrpcCompletion::Callback decorated =
+      [this, on_success](bool ok,
+                         const std::shared_ptr<GrpcCompletion>& completion) {
+        RemoveCompletion(completion);
+
+        if (ok) {
+          if (on_success) {
+            on_success(completion);
+          }
+        } else {
+          // Use the same error-handling for all operations; all errors are
+          // unrecoverable.
+          LOG_DEBUG("GrpcStream('%s'): operation of type %s failed", this,
+                    completion->type());
+          OnOperationFailed();
+        }
+      };
+
+  // For lifetime details, see `GrpcCompletion` class comment.
+  auto completion =
+      GrpcCompletion::Create(tag, worker_queue_, std::move(decorated));
+  completions_.push_back(completion);
+  return completion;
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.h
new file mode 100644
index 0000000..dfc656e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream.h	
@@ -0,0 +1,248 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_H_
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <queue>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/remote/grpc_call.h"
+#include "Firestore/core/src/remote/grpc_completion.h"
+#include "Firestore/core/src/remote/grpc_stream_observer.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "Firestore/core/src/util/warnings.h"
+#include "absl/types/optional.h"
+#include "grpcpp/client_context.h"
+#include "grpcpp/support/byte_buffer.h"
+
+SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+#include "grpcpp/generic/generic_stub.h"
+SUPPRESS_END()
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class GrpcConnection;
+class GrpcStream;
+
+namespace internal {
+
+struct BufferedWrite {
+  grpc::ByteBuffer message;
+  grpc::WriteOptions options;
+};
+
+/**
+ * `BufferedWriter` accepts serialized protos ("writes") on its queue and
+ * writes them to the gRPC stream one by one. Only one write
+ * may be in progress ("active") at any given time.
+ *
+ * Writes are put on the queue using `EnqueueWrite`; if no other write is
+ * currently in progress, a write will be issued with the given proto
+ * immediately, otherwise, the proto will be "buffered" (put on the queue in
+ * this `BufferedWriter`). When a write becomes active, a `StreamWrite`
+ * operation is created with the proto and immediately executed; a write is
+ * active from the moment it is executed and until `DequeueNextWrite` is called
+ * on the `BufferedWriter`. `DequeueNextWrite` makes the next write active, if
+ * any.
+ *
+ * `BufferedWriter` does not store any of the operations it creates.
+ *
+ * This class exists to help Firestore streams adhere to the gRPC requirement
+ * that only one write operation may be active at any given time.
+ */
+class BufferedWriter {
+ public:
+  // Returns the newly-created write operation if the given `write` became
+  // active, null pointer otherwise.
+  absl::optional<BufferedWrite> EnqueueWrite(grpc::ByteBuffer&& message,
+                                             const grpc::WriteOptions& options);
+
+  absl::optional<BufferedWrite> EnqueueWrite(grpc::ByteBuffer&& write) {
+    return EnqueueWrite(std::move(write), grpc::WriteOptions{});
+  }
+
+  // Returns the newly-created write operation if there was a next write in the
+  // queue, or nullptr if the queue was empty.
+  absl::optional<BufferedWrite> DequeueNextWrite();
+
+ private:
+  absl::optional<BufferedWrite> TryStartWrite();
+
+  std::queue<BufferedWrite> queue_;
+  bool has_active_write_ = false;
+};
+
+}  // namespace internal
+
+/**
+ * A gRPC bidirectional stream that notifies the given `observer` about stream
+ * events.
+ *
+ * The stream has to be explicitly opened (via `Start`) before it can be used.
+ * The stream is always listening for new messages from the server. The stream
+ * can be used to send messages to the server (via `Write`); messages are queued
+ * and sent out one by one. Both sent and received messages are raw bytes;
+ * serialization and deserialization are left to the caller.
+ *
+ * The observer will be notified about the following events:
+ * - stream has been started;
+ * - stream has received a new message from the server;
+ * - stream has been interrupted with an error. All errors are unrecoverable.
+ *
+ * Note that the stream will _not_ notify the observer about finish if the
+ * finish was initiated by the client.
+ *
+ * The stream is disposable; once it finishes, it cannot be restarted.
+ *
+ * This class is essentially a wrapper over
+ * `grpc::GenericClientAsyncReaderWriter`. See the source file for comments on
+ * implementation details.
+ */
+class GrpcStream : public GrpcCall {
+ public:
+  GrpcStream(std::unique_ptr<grpc::ClientContext> context,
+             std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call,
+             const std::shared_ptr<util::AsyncQueue>& worker_queue,
+             GrpcConnection* grpc_connection,
+             GrpcStreamObserver* observer);
+  ~GrpcStream() override;
+
+  void Start();
+
+  // Can only be called once the stream has opened.
+  void Write(grpc::ByteBuffer&& message);
+
+  /**
+   * Writes the given message and indicates to the server that no more write
+   * operations will be sent using this stream. It is invalid to call `Write` or
+   * `WriteLast` after `WriteLast` was called.
+   */
+  void WriteLast(grpc::ByteBuffer&& message);
+
+  // Does not produce a notification. Once this method is called, the stream can
+  // no longer be used.
+  //
+  // This is a blocking operation; blocking time is expected to be in the order
+  // of tens of milliseconds.
+  //
+  // Can be called on a stream before it opens.
+  void FinishImmediately() override;
+
+  // Like `FinishImmediately`, but will notify the observer.
+  void FinishAndNotify(const util::Status& status) override;
+
+  /**
+   * Writes the given message and finishes the stream as soon as this final
+   * write succeeds. The final write is done on a best-effort basis; the return
+   * value indicates whether the final write went through.
+   *
+   * This is a blocking operation; blocking time is expected to be in the order
+   * of tens of milliseconds.
+   *
+   * Can only be called once the stream has opened.
+   */
+  bool WriteAndFinish(grpc::ByteBuffer&& message);
+
+  bool IsFinished() const {
+    return observer_ == nullptr;
+  }
+
+  /**
+   * Returns the metadata received from the server.
+   *
+   * Can only be called once the stream has opened.
+   */
+  Metadata GetResponseHeaders() const override;
+
+  /** For tests only */
+  grpc::ClientContext* context() override {
+    return context_.get();
+  }
+
+ private:
+  void Read();
+  void MaybeWrite(absl::optional<internal::BufferedWrite> maybe_write);
+  bool TryLastWrite(grpc::ByteBuffer&& message);
+
+  void Shutdown();
+  void UnsetObserver() {
+    observer_ = nullptr;
+  }
+  void MaybeUnregister();
+
+  void OnStart();
+  void OnRead(const grpc::ByteBuffer& message);
+  void OnWrite();
+  void OnOperationFailed();
+  void RemoveCompletion(const std::shared_ptr<GrpcCompletion>& to_remove);
+
+  using OnSuccess = std::function<void(const std::shared_ptr<GrpcCompletion>&)>;
+  std::shared_ptr<GrpcCompletion> NewCompletion(GrpcCompletion::Type tag,
+                                                const OnSuccess& on_success);
+  // Finishes the underlying gRPC call. Must always be invoked on any call that
+  // was started. Presumes that any pending completions will quickly come off
+  // the queue and will block until they do, so this must only be invoked when
+  // the current call either failed (`OnOperationFailed`) or canceled.
+  void FinishGrpcCall(const OnSuccess& callback);
+
+  // Blocks until all the completions issued by this stream come out from the
+  // gRPC completion queue. Once they do, it is safe to delete this `GrpcStream`
+  // (thus releasing `grpc::ClientContext`). This function should only be called
+  // during the stream finish.
+  //
+  // Important: before calling this function, the caller must be sure that any
+  // pending completions on the gRPC completion queue will come back quickly
+  // (either because the call has failed, or because the call has been
+  // canceled). Otherwise, this function will block indefinitely.
+  void FastFinishCompletionsBlocking();
+
+  // gRPC requires the `context_` and `call_` objects to be valid until the last
+  // gRPC operation associated with this stream finishes. Note that
+  // `grpc::ClientContext` is _not_ reference-counted.
+  //
+  // Important: `call_` has to be destroyed before `context_`, so declaration
+  // order matters here. Despite the unique pointer, `call_` is actually
+  // a non-owning handle, and the memory it refers to (part of a gRPC memory
+  // arena) will be released once `context_` (which is owning) is released.
+  std::unique_ptr<grpc::ClientContext> context_;
+  std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call_;
+
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  GrpcConnection* grpc_connection_ = nullptr;
+
+  GrpcStreamObserver* observer_ = nullptr;
+  internal::BufferedWriter buffered_writer_;
+
+  std::vector<std::shared_ptr<GrpcCompletion>> completions_;
+
+  // gRPC asserts that a call is finished exactly once.
+  bool is_grpc_call_finished_ = false;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream_observer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream_observer.h
new file mode 100644
index 0000000..b9283e1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_stream_observer.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_OBSERVER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_OBSERVER_H_
+
+#include "Firestore/core/src/util/status_fwd.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/** Observer that gets notified of events on a gRPC stream. */
+class GrpcStreamObserver {
+ public:
+  virtual ~GrpcStreamObserver() = default;
+
+  // Stream has been successfully established.
+  virtual void OnStreamStart() = 0;
+  // A message has been received from the server.
+  virtual void OnStreamRead(const grpc::ByteBuffer& message) = 0;
+  // Connection has been broken, perhaps by the server.
+  virtual void OnStreamFinish(const util::Status& status) = 0;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAM_OBSERVER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.cc
new file mode 100644
index 0000000..49bff94
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.cc	
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_streaming_reader.h"
+
+#include <utility>
+
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using util::AsyncQueue;
+using util::Status;
+
+GrpcStreamingReader::GrpcStreamingReader(
+    std::unique_ptr<grpc::ClientContext> context,
+    std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    GrpcConnection* grpc_connection,
+    const grpc::ByteBuffer& request)
+    : stream_{absl::make_unique<GrpcStream>(std::move(context),
+                                            std::move(call),
+                                            worker_queue,
+                                            grpc_connection,
+                                            this)},
+      request_{request} {
+}
+
+void GrpcStreamingReader::Start(Callback&& callback) {
+  callback_ = std::move(callback);
+  stream_->Start();
+}
+
+void GrpcStreamingReader::FinishImmediately() {
+  stream_->FinishImmediately();
+}
+
+void GrpcStreamingReader::FinishAndNotify(const Status& status) {
+  stream_->FinishAndNotify(status);
+}
+
+void GrpcStreamingReader::OnStreamStart() {
+  // It is important to indicate to the server that there will be no follow-up
+  // writes; otherwise, the call will never finish.
+  stream_->WriteLast(std::move(request_));
+}
+
+void GrpcStreamingReader::OnStreamRead(const grpc::ByteBuffer& message) {
+  // Accumulate responses
+  responses_.push_back(message);
+}
+
+void GrpcStreamingReader::OnStreamFinish(const util::Status& status) {
+  HARD_ASSERT(callback_,
+              "Received an event from stream after callback was unset");
+  // Invoking the callback may end this reader's lifetime.
+  auto callback = std::move(callback_);
+  if (status.ok()) {
+    callback(responses_);
+  } else {
+    callback(status);
+  }
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.h
new file mode 100644
index 0000000..f6774fd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_streaming_reader.h	
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAMING_READER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAMING_READER_H_
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include "Firestore/core/src/remote/grpc_stream.h"
+#include "Firestore/core/src/remote/grpc_stream_observer.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "Firestore/core/src/util/warnings.h"
+#include "grpcpp/client_context.h"
+#include "grpcpp/support/byte_buffer.h"
+
+SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+#include "grpcpp/generic/generic_stub.h"
+SUPPRESS_END()
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class GrpcConnection;
+
+/**
+ * Sends a single request to the server, reads one or more streaming server
+ * responses, and invokes the given callback with the accumulated responses.
+ */
+class GrpcStreamingReader : public GrpcCall, public GrpcStreamObserver {
+ public:
+  using ResponsesT = std::vector<grpc::ByteBuffer>;
+  using Callback = std::function<void(const util::StatusOr<ResponsesT>&)>;
+
+  GrpcStreamingReader(
+      std::unique_ptr<grpc::ClientContext> context,
+      std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call,
+      const std::shared_ptr<util::AsyncQueue>& worker_queue,
+      GrpcConnection* grpc_connection,
+      const grpc::ByteBuffer& request);
+
+  /**
+   * Starts the call; the given `callback` will be invoked with the accumulated
+   * results of the call. If the call fails, the `callback` will be invoked with
+   * a non-ok status.
+   */
+  void Start(Callback&& callback);
+
+  /**
+   * If the call is in progress, attempts to cancel the call; otherwise, it's
+   * a no-op. Cancellation is done on best-effort basis; however:
+   * - the call is guaranteed to be finished when this function returns;
+   * - this function is blocking but should finish very fast (order of
+   *   milliseconds).
+   *
+   * If this function succeeds in cancelling the call, the callback will not be
+   * invoked.
+   */
+  void FinishImmediately() override;
+
+  void FinishAndNotify(const util::Status& status) override;
+
+  /**
+   * Returns the metadata received from the server.
+   *
+   * Can only be called once the `GrpcStreamingReader` has received the first
+   * message from the server.
+   */
+  Metadata GetResponseHeaders() const override {
+    return stream_->GetResponseHeaders();
+  }
+
+  void OnStreamStart() override;
+  void OnStreamRead(const grpc::ByteBuffer& message) override;
+  void OnStreamFinish(const util::Status& status) override;
+
+  /** For tests only */
+  grpc::ClientContext* context() override {
+    return stream_->context();
+  }
+
+ private:
+  std::unique_ptr<GrpcStream> stream_;
+  grpc::ByteBuffer request_;
+
+  Callback callback_;
+  ResponsesT responses_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_STREAMING_READER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.cc
new file mode 100644
index 0000000..007211e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.cc	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_unary_call.h"
+
+#include <utility>
+
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/grpc_util.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using util::AsyncQueue;
+using util::Status;
+using Type = GrpcCompletion::Type;
+
+GrpcUnaryCall::GrpcUnaryCall(
+    std::unique_ptr<grpc::ClientContext> context,
+    std::unique_ptr<grpc::GenericClientAsyncResponseReader> call,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    GrpcConnection* grpc_connection,
+    const grpc::ByteBuffer& request)
+    : context_{std::move(context)},
+      call_{std::move(call)},
+      request_{request},
+      worker_queue_{worker_queue},
+      grpc_connection_{grpc_connection} {
+  grpc_connection_->Register(this);
+}
+
+GrpcUnaryCall::~GrpcUnaryCall() {
+  HARD_ASSERT(!finish_completion_,
+              "GrpcUnaryCall is being destroyed without proper shutdown");
+  MaybeUnregister();
+}
+
+void GrpcUnaryCall::Start(Callback&& callback) {
+  callback_ = std::move(callback);
+  call_->StartCall();
+
+  // For lifetime details, see `GrpcCompletion` class comment.
+  finish_completion_ = GrpcCompletion::Create(
+      Type::Finish, worker_queue_,
+      [this](bool /*ignored_ok*/,
+             const std::shared_ptr<GrpcCompletion>& completion) {
+        // Ignoring ok, status should contain all the relevant information.
+        finish_completion_.reset();
+        Shutdown();
+
+        auto callback = std::move(callback_);
+        if (completion->status()->ok()) {
+          callback(*completion->message());
+        } else {
+          callback(ConvertStatus(*completion->status()));
+        }
+        // This `GrpcUnaryCall`'s lifetime might have been ended by the
+        // callback.
+      });
+
+  call_->Finish(finish_completion_->message(), finish_completion_->status(),
+                finish_completion_.get());
+}
+
+void GrpcUnaryCall::FinishImmediately() {
+  Shutdown();
+}
+
+void GrpcUnaryCall::FinishAndNotify(const util::Status& status) {
+  Shutdown();
+
+  auto callback = std::move(callback_);
+  callback(status);
+}
+
+void GrpcUnaryCall::Shutdown() {
+  MaybeUnregister();
+  if (!finish_completion_) {
+    // Nothing to cancel.
+    return;
+  }
+
+  context_->TryCancel();
+
+  finish_completion_->Cancel();
+  // This function blocks.
+  finish_completion_->WaitUntilOffQueue();
+  finish_completion_.reset();
+}
+
+void GrpcUnaryCall::MaybeUnregister() {
+  if (grpc_connection_) {
+    grpc_connection_->Unregister(this);
+    grpc_connection_ = nullptr;
+  }
+}
+
+GrpcCall::Metadata GrpcUnaryCall::GetResponseHeaders() const {
+  return context_->GetServerInitialMetadata();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.h
new file mode 100644
index 0000000..b366935
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_unary_call.h	
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_UNARY_CALL_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_UNARY_CALL_H_
+
+#include <functional>
+#include <map>
+#include <memory>
+
+#include "Firestore/core/src/remote/grpc_call.h"
+#include "Firestore/core/src/remote/grpc_completion.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "Firestore/core/src/util/warnings.h"
+#include "grpcpp/client_context.h"
+#include "grpcpp/support/byte_buffer.h"
+
+SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+#include "grpcpp/generic/generic_stub.h"
+SUPPRESS_END()
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class GrpcConnection;
+
+/**
+ * Sends a single request to the server and invokes the given callback with the
+ * server response.
+ */
+class GrpcUnaryCall : public GrpcCall {
+ public:
+  using Callback = std::function<void(const util::StatusOr<grpc::ByteBuffer>&)>;
+
+  GrpcUnaryCall(std::unique_ptr<grpc::ClientContext> context,
+                std::unique_ptr<grpc::GenericClientAsyncResponseReader> call,
+                const std::shared_ptr<util::AsyncQueue>& worker_queue,
+                GrpcConnection* grpc_connection,
+                const grpc::ByteBuffer& request);
+  ~GrpcUnaryCall();
+
+  /**
+   * Starts the call; the given `callback` will be invoked with the result of
+   * the call. If the call fails, the `callback` will be invoked with a non-ok
+   * status.
+   */
+  void Start(Callback&& callback);
+
+  /**
+   * If the call is in progress, attempts to finish the call early, effectively
+   * cancelling it; otherwise, it's a no-op. Cancellation is done on best-effort
+   * basis; however:
+   * - the call is guaranteed to be finished when this function returns;
+   * - this function is blocking but should be done very fast (order of
+   *   milliseconds).
+   *
+   * If this function succeeds in cancelling the call, the callback will not be
+   * invoked.
+   */
+  void FinishImmediately() override;
+
+  /** Like `Finish`, but always invokes the callback with the given `status`. */
+  void FinishAndNotify(const util::Status& status) override;
+
+  /**
+   * Returns the metadata received from the server.
+   *
+   * Can only be called once the `GrpcUnaryCall` has finished.
+   */
+  Metadata GetResponseHeaders() const override;
+
+  /** For tests only */
+  grpc::ClientContext* context() override {
+    return context_.get();
+  }
+
+ private:
+  void Shutdown();
+  void MaybeUnregister();
+
+  // See comments in `GrpcStream` on lifetime issues for gRPC objects.
+  std::unique_ptr<grpc::ClientContext> context_;
+  std::unique_ptr<grpc::GenericClientAsyncResponseReader> call_;
+  // Stored to avoid lifetime issues with gRPC.
+  grpc::ByteBuffer request_;
+
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  GrpcConnection* grpc_connection_ = nullptr;
+
+  std::shared_ptr<GrpcCompletion> finish_completion_;
+  Callback callback_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_UNARY_CALL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.cc
new file mode 100644
index 0000000..61ce123
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.cc	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/grpc_util.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using util::Status;
+
+Status ConvertStatus(const grpc::Status& from) {
+  if (from.ok()) {
+    return Status::OK();
+  }
+
+  grpc::StatusCode error_code = from.error_code();
+  // Both `grpc::Status` and Firestore's `util::Status` use canonical error
+  // codes for Google APIs. The canonical codes define integer values, so this
+  // conversion should be safe.
+  // See
+  // https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto
+  HARD_ASSERT(error_code >= grpc::StatusCode::CANCELLED &&
+                  error_code <= grpc::StatusCode::UNAUTHENTICATED,
+              "Unknown gRPC error code: %s", error_code);
+
+  return {static_cast<Error>(error_code), from.error_message()};
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.h
new file mode 100644
index 0000000..0804361
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/grpc_util.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_GRPC_UTIL_H_
+#define FIRESTORE_CORE_SRC_REMOTE_GRPC_UTIL_H_
+
+#include "Firestore/core/src/util/status_fwd.h"
+#include "grpcpp/support/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+util::Status ConvertStatus(const grpc::Status& from);
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_GRPC_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.cc
new file mode 100644
index 0000000..ade2f0a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.cc	
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/online_state_tracker.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+
+#include "Firestore/core/src/util/executor.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+namespace chr = std::chrono;
+
+using model::OnlineState;
+using util::AsyncQueue;
+using util::Status;
+using util::StringFormat;
+using util::TimerId;
+
+// To deal with transient failures, we allow multiple stream attempts before
+// giving up and transitioning from OnlineState Unknown to Offline.
+// TODO(mikelehen): This used to be set to 2 as a mitigation for b/66228394.
+// @jdimond thinks that bug is sufficiently fixed so that we can set this back
+// to 1. If that works okay, we could potentially remove this logic entirely.
+const int kMaxWatchStreamFailures = 1;
+
+// To deal with stream attempts that don't succeed or fail in a timely manner,
+// we have a timeout for OnlineState to reach Online or Offline. If the timeout
+// is reached, we transition to Offline rather than waiting indefinitely.
+const AsyncQueue::Milliseconds kOnlineStateTimeout = chr::seconds(10);
+
+}  // namespace
+
+void OnlineStateTracker::HandleWatchStreamStart() {
+  if (watch_stream_failures_ != 0) {
+    return;
+  }
+
+  SetAndBroadcast(OnlineState::Unknown);
+
+  HARD_ASSERT(!online_state_timer_,
+              "online_state_timer_ shouldn't be started yet");
+  online_state_timer_ = worker_queue_->EnqueueAfterDelay(
+      kOnlineStateTimeout, TimerId::OnlineStateTimeout, [this] {
+        online_state_timer_ = {};
+
+        HARD_ASSERT(state_ == OnlineState::Unknown,
+                    "Timer should be canceled if we transitioned to a "
+                    "different state.");
+        LogClientOfflineWarningIfNecessary(StringFormat(
+            "Backend didn't respond within %s seconds.",
+            chr::duration_cast<chr::seconds>(kOnlineStateTimeout).count()));
+        SetAndBroadcast(OnlineState::Offline);
+
+        // NOTE: `HandleWatchStreamFailure` will continue to increment
+        // `watch_stream_failures_` even though we are already marked `Offline`
+        // but this is non-harmful.
+      });
+}
+
+void OnlineStateTracker::HandleWatchStreamFailure(const Status& error) {
+  if (state_ == OnlineState::Online) {
+    SetAndBroadcast(OnlineState::Unknown);
+
+    // To get to `OnlineState`::Online, `UpdateState` must have been called
+    // which would have reset our heuristics.
+    HARD_ASSERT(watch_stream_failures_ == 0,
+                "watch_stream_failures_ must be 0");
+    HARD_ASSERT(!online_state_timer_,
+                "online_state_timer_ must not be set yet");
+  } else {
+    ++watch_stream_failures_;
+
+    if (watch_stream_failures_ >= kMaxWatchStreamFailures) {
+      ClearOnlineStateTimer();
+
+      LogClientOfflineWarningIfNecessary(
+          StringFormat("Connection failed %s times. Most recent error: %s",
+                       kMaxWatchStreamFailures, error.error_message()));
+
+      SetAndBroadcast(OnlineState::Offline);
+    }
+  }
+}
+
+void OnlineStateTracker::UpdateState(OnlineState new_state) {
+  ClearOnlineStateTimer();
+  watch_stream_failures_ = 0;
+
+  if (new_state == OnlineState::Online) {
+    // We've connected to watch at least once. Don't warn the developer about
+    // being offline going forward.
+    should_warn_client_is_offline_ = false;
+  }
+
+  SetAndBroadcast(new_state);
+}
+
+void OnlineStateTracker::SetAndBroadcast(OnlineState new_state) {
+  if (new_state != state_) {
+    state_ = new_state;
+    online_state_handler_(new_state);
+  }
+}
+
+void OnlineStateTracker::LogClientOfflineWarningIfNecessary(
+    const std::string& reason) {
+  std::string message = StringFormat(
+      "Could not reach Cloud Firestore backend. %s\n This "
+      "typically indicates that your device does not have a "
+      "healthy Internet connection at the moment. The client will "
+      "operate in offline mode until it is able to successfully "
+      "connect to the backend.",
+      reason);
+
+  if (should_warn_client_is_offline_) {
+    LOG_WARN("%s", message);
+    should_warn_client_is_offline_ = false;
+  } else {
+    LOG_DEBUG("%s", message);
+  }
+}
+
+void OnlineStateTracker::ClearOnlineStateTimer() {
+  online_state_timer_.Cancel();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.h
new file mode 100644
index 0000000..297f0ea
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/online_state_tracker.h	
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_ONLINE_STATE_TRACKER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_ONLINE_STATE_TRACKER_H_
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * A component used by the `RemoteStore` to track the `OnlineState` (that is,
+ * whether or not the client as a whole should be considered to be online or
+ * offline), implementing the appropriate heuristics.
+ *
+ * In particular, when the client is trying to connect to the backend, we allow
+ * up to `kMaxWatchStreamFailures` within `kOnlineStateTimeout` for a connection
+ * to succeed. If we have too many failures or the timeout elapses, then we set
+ * the `OnlineState` to `Offline`, and the client will behave as if it is
+ * offline (`GetDocument()` calls will return cached data, etc.).
+ */
+class OnlineStateTracker {
+ public:
+  OnlineStateTracker() = default;
+
+  OnlineStateTracker(
+      const std::shared_ptr<util::AsyncQueue>& worker_queue,
+      std::function<void(model::OnlineState)> online_state_handler)
+      : worker_queue_{worker_queue},
+        online_state_handler_{online_state_handler} {
+  }
+
+  /**
+   * Called by `RemoteStore` when a watch stream is started (including on
+   * each backoff attempt).
+   *
+   * If this is the first attempt, it sets the `OnlineState` to `Unknown` and
+   * starts the `online_state_timer_`.
+   */
+  void HandleWatchStreamStart();
+
+  /**
+   * Called by `RemoteStore` when a watch stream fails.
+   *
+   * Updates our `OnlineState` as appropriate. The first failure moves us to
+   * `OnlineState::Unknown`. We then may allow multiple failures (based on
+   * `kMaxWatchStreamFailures`) before we actually transition to
+   * `OnlineState::Offline`.
+   */
+  void HandleWatchStreamFailure(const util::Status& error);
+
+  /**
+   * Explicitly sets the `OnlineState` to the specified state.
+   *
+   * Note that this resets the timers / failure counters, etc. used by our
+   * `Offline` heuristics, so it must not be used in place of
+   * `HandleWatchStreamStart` and `HandleWatchStreamFailure`.
+   */
+  void UpdateState(model::OnlineState new_state);
+
+ private:
+  void SetAndBroadcast(model::OnlineState new_state);
+  void LogClientOfflineWarningIfNecessary(const std::string& reason);
+  void ClearOnlineStateTimer();
+
+  /** The current `OnlineState`. */
+  model::OnlineState state_ = model::OnlineState::Unknown;
+
+  /**
+   * A count of consecutive failures to open the stream. If it reaches the
+   * maximum defined by `kMaxWatchStreamFailures`, we'll revert to
+   * `OnlineState::Offline`.
+   */
+  int watch_stream_failures_ = 0;
+
+  /**
+   * A timer that elapses after `kOnlineStateTimeout`, at which point we
+   * transition from `OnlineState` `Unknown` to `Offline` without waiting for
+   * the stream to actually fail (`kMaxWatchStreamFailures` times).
+   */
+  util::DelayedOperation online_state_timer_;
+
+  /**
+   * Whether the client should log a warning message if it fails to connect to
+   * the backend (initially true, cleared after a successful stream, or if we've
+   * logged the message already).
+   */
+  bool should_warn_client_is_offline_ = true;
+
+  /**
+   * The worker queue to use for running timers (and to call
+   * `online_state_handler_`).
+   */
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+
+  /** A callback to be notified on `OnlineState` changes. */
+  std::function<void(model::OnlineState)> online_state_handler_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_ONLINE_STATE_TRACKER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.cc
new file mode 100644
index 0000000..f6f5d86
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.cc	
@@ -0,0 +1,424 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/remote_event.h"
+
+#include <utility>
+
+#include "Firestore/core/src/local/target_data.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using core::DocumentViewChange;
+using core::Target;
+using local::QueryPurpose;
+using local::TargetData;
+using model::DocumentKey;
+using model::DocumentKeySet;
+using model::MutableDocument;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::ByteString;
+
+// TargetChange
+
+bool operator==(const TargetChange& lhs, const TargetChange& rhs) {
+  return lhs.resume_token() == rhs.resume_token() &&
+         lhs.current() == rhs.current() &&
+         lhs.added_documents() == rhs.added_documents() &&
+         lhs.modified_documents() == rhs.modified_documents() &&
+         lhs.removed_documents() == rhs.removed_documents();
+}
+
+// TargetState
+
+void TargetState::UpdateResumeToken(ByteString resume_token) {
+  if (!resume_token.empty()) {
+    has_pending_changes_ = true;
+    resume_token_ = std::move(resume_token);
+  }
+}
+
+TargetChange TargetState::ToTargetChange() const {
+  DocumentKeySet added_documents;
+  DocumentKeySet modified_documents;
+  DocumentKeySet removed_documents;
+
+  for (const auto& entry : document_changes_) {
+    const DocumentKey& document_key = entry.first;
+    DocumentViewChange::Type change_type = entry.second;
+
+    switch (change_type) {
+      case DocumentViewChange::Type::Added:
+        added_documents = added_documents.insert(document_key);
+        break;
+      case DocumentViewChange::Type::Modified:
+        modified_documents = modified_documents.insert(document_key);
+        break;
+      case DocumentViewChange::Type::Removed:
+        removed_documents = removed_documents.insert(document_key);
+        break;
+      default:
+        HARD_FAIL("Encountered invalid change type: %s", change_type);
+    }
+  }
+
+  return TargetChange{resume_token(), current(), std::move(added_documents),
+                      std::move(modified_documents),
+                      std::move(removed_documents)};
+}
+
+void TargetState::ClearPendingChanges() {
+  has_pending_changes_ = false;
+  document_changes_.clear();
+}
+
+void TargetState::RecordPendingTargetRequest() {
+  ++outstanding_responses_;
+}
+
+void TargetState::RecordTargetResponse() {
+  --outstanding_responses_;
+}
+
+void TargetState::MarkCurrent() {
+  has_pending_changes_ = true;
+  current_ = true;
+}
+
+void TargetState::AddDocumentChange(const DocumentKey& document_key,
+                                    DocumentViewChange::Type type) {
+  has_pending_changes_ = true;
+  document_changes_[document_key] = type;
+}
+
+void TargetState::RemoveDocumentChange(const DocumentKey& document_key) {
+  has_pending_changes_ = true;
+  document_changes_.erase(document_key);
+}
+
+// WatchChangeAggregator
+
+WatchChangeAggregator::WatchChangeAggregator(
+    TargetMetadataProvider* target_metadata_provider)
+    : target_metadata_provider_{NOT_NULL(target_metadata_provider)} {
+}
+
+void WatchChangeAggregator::HandleDocumentChange(
+    const DocumentWatchChange& document_change) {
+  for (TargetId target_id : document_change.updated_target_ids()) {
+    const auto& new_doc = document_change.new_document();
+    if (new_doc && new_doc->is_found_document()) {
+      AddDocumentToTarget(target_id, *new_doc);
+    } else if (new_doc && new_doc->is_no_document()) {
+      RemoveDocumentFromTarget(target_id, document_change.document_key(),
+                               document_change.new_document());
+    }
+  }
+
+  for (TargetId target_id : document_change.removed_target_ids()) {
+    RemoveDocumentFromTarget(target_id, document_change.document_key(),
+                             document_change.new_document());
+  }
+}
+
+void WatchChangeAggregator::HandleTargetChange(
+    const WatchTargetChange& target_change) {
+  for (TargetId target_id : GetTargetIds(target_change)) {
+    TargetState& target_state = EnsureTargetState(target_id);
+
+    switch (target_change.state()) {
+      case WatchTargetChangeState::NoChange:
+        if (IsActiveTarget(target_id)) {
+          target_state.UpdateResumeToken(target_change.resume_token());
+        }
+        continue;
+      case WatchTargetChangeState::Added:
+        // We need to decrement the number of pending acks needed from watch for
+        // this target_id.
+        target_state.RecordTargetResponse();
+        if (!target_state.IsPending()) {
+          // We have a freshly added target, so we need to reset any state that
+          // we had previously. This can happen e.g. when remove and add back a
+          // target for existence filter mismatches.
+          target_state.ClearPendingChanges();
+        }
+        target_state.UpdateResumeToken(target_change.resume_token());
+        continue;
+      case WatchTargetChangeState::Removed:
+        // We need to keep track of removed targets so we can post-filter and
+        // remove any target changes. We need to decrement the number of pending
+        // acks needed from watch for this target_id.
+        target_state.RecordTargetResponse();
+        if (!target_state.IsPending()) {
+          RemoveTarget(target_id);
+        }
+        HARD_ASSERT(target_change.cause().ok(),
+                    "WatchChangeAggregator does not handle errored targets");
+        continue;
+      case WatchTargetChangeState::Current:
+        if (IsActiveTarget(target_id)) {
+          target_state.MarkCurrent();
+          target_state.UpdateResumeToken(target_change.resume_token());
+        }
+        continue;
+      case WatchTargetChangeState::Reset:
+        if (IsActiveTarget(target_id)) {
+          // Reset the target and synthesizes removes for all existing
+          // documents. The backend will re-add any documents that still match
+          // the target before it sends the next global snapshot.
+          ResetTarget(target_id);
+          target_state.UpdateResumeToken(target_change.resume_token());
+        }
+        continue;
+    }
+    HARD_FAIL("Unknown target watch change state: %s", target_change.state());
+  }
+}
+
+std::vector<TargetId> WatchChangeAggregator::GetTargetIds(
+    const WatchTargetChange& target_change) const {
+  if (!target_change.target_ids().empty()) {
+    return target_change.target_ids();
+  }
+
+  std::vector<TargetId> result;
+  for (const auto& entry : target_states_) {
+    if (IsActiveTarget(entry.first)) {
+      result.push_back(entry.first);
+    }
+  }
+
+  return result;
+}
+
+void WatchChangeAggregator::HandleExistenceFilter(
+    const ExistenceFilterWatchChange& existence_filter) {
+  TargetId target_id = existence_filter.target_id();
+  int expected_count = existence_filter.filter().count();
+
+  absl::optional<TargetData> target_data = TargetDataForActiveTarget(target_id);
+  if (target_data) {
+    const Target& target = target_data->target();
+    if (target.IsDocumentQuery()) {
+      if (expected_count == 0) {
+        // The existence filter told us the document does not exist. We deduce
+        // that this document does not exist and apply a deleted document to our
+        // updates. Without applying this deleted document there might be
+        // another query that will raise this document as part of a snapshot
+        // until it is resolved, essentially exposing inconsistency between
+        // queries.
+        DocumentKey key{target.path()};
+        RemoveDocumentFromTarget(
+            target_id, key,
+            MutableDocument::NoDocument(key, SnapshotVersion::None()));
+      } else {
+        HARD_ASSERT(expected_count == 1,
+                    "Single document existence filter with count: %s",
+                    expected_count);
+      }
+    } else {
+      int current_size = GetCurrentDocumentCountForTarget(target_id);
+      if (current_size != expected_count) {
+        // Existence filter mismatch: We reset the mapping and raise a new
+        // snapshot with `isFromCache:true`.
+        ResetTarget(target_id);
+        pending_target_resets_.insert(target_id);
+      }
+    }
+  }
+}
+
+RemoteEvent WatchChangeAggregator::CreateRemoteEvent(
+    const SnapshotVersion& snapshot_version) {
+  std::unordered_map<TargetId, TargetChange> target_changes;
+
+  for (auto& entry : target_states_) {
+    TargetId target_id = entry.first;
+    TargetState& target_state = entry.second;
+
+    absl::optional<TargetData> target_data =
+        TargetDataForActiveTarget(target_id);
+    if (target_data) {
+      if (target_state.current() && target_data->target().IsDocumentQuery()) {
+        // Document queries for document that don't exist can produce an empty
+        // result set. To update our local cache, we synthesize a document
+        // delete if we have not previously received the document. This resolves
+        // the limbo state of the document, removing it from
+        // SyncEngine::limbo_document_refs_.
+        DocumentKey key{target_data->target().path()};
+        if (pending_document_updates_.find(key) ==
+                pending_document_updates_.end() &&
+            !TargetContainsDocument(target_id, key)) {
+          RemoveDocumentFromTarget(
+              target_id, key,
+              MutableDocument::NoDocument(key, snapshot_version));
+        }
+      }
+
+      if (target_state.HasPendingChanges()) {
+        target_changes[target_id] = target_state.ToTargetChange();
+        target_state.ClearPendingChanges();
+      }
+    }
+  }
+
+  DocumentKeySet resolved_limbo_documents;
+
+  // We extract the set of limbo-only document updates as the GC logic
+  // special-cases documents that do not appear in the target cache.
+  //
+  // TODO(gsoltis): Expand on this comment.
+  for (const auto& entry : pending_document_target_mappings_) {
+    bool is_only_limbo_target = true;
+
+    for (TargetId target_id : entry.second) {
+      absl::optional<TargetData> target_data =
+          TargetDataForActiveTarget(target_id);
+      if (target_data &&
+          target_data->purpose() != QueryPurpose::LimboResolution) {
+        is_only_limbo_target = false;
+        break;
+      }
+    }
+
+    if (is_only_limbo_target) {
+      resolved_limbo_documents = resolved_limbo_documents.insert(entry.first);
+    }
+  }
+
+  RemoteEvent remote_event{snapshot_version, std::move(target_changes),
+                           std::move(pending_target_resets_),
+                           std::move(pending_document_updates_),
+                           std::move(resolved_limbo_documents)};
+
+  // Re-initialize the current state to ensure that we do not modify the
+  // generated `RemoteEvent`.
+  pending_document_updates_.clear();
+  pending_document_target_mappings_.clear();
+  pending_target_resets_.clear();
+
+  return remote_event;
+}
+
+void WatchChangeAggregator::AddDocumentToTarget(
+    TargetId target_id, const MutableDocument& document) {
+  if (!IsActiveTarget(target_id)) {
+    return;
+  }
+
+  DocumentViewChange::Type change_type =
+      TargetContainsDocument(target_id, document.key())
+          ? DocumentViewChange::Type::Modified
+          : DocumentViewChange::Type::Added;
+
+  TargetState& target_state = EnsureTargetState(target_id);
+  target_state.AddDocumentChange(document.key(), change_type);
+
+  pending_document_updates_[document.key()] = document;
+  pending_document_target_mappings_[document.key()].insert(target_id);
+}
+
+void WatchChangeAggregator::RemoveDocumentFromTarget(
+    TargetId target_id,
+    const DocumentKey& key,
+    const absl::optional<MutableDocument>& updated_document) {
+  if (!IsActiveTarget(target_id)) {
+    return;
+  }
+
+  TargetState& target_state = EnsureTargetState(target_id);
+  if (TargetContainsDocument(target_id, key)) {
+    target_state.AddDocumentChange(key, DocumentViewChange::Type::Removed);
+  } else {
+    // The document may have entered and left the target before we raised a
+    // snapshot, so we can just ignore the change.
+    target_state.RemoveDocumentChange(key);
+  }
+  pending_document_target_mappings_[key].insert(target_id);
+
+  if (updated_document) {
+    pending_document_updates_[key] = *updated_document;
+  }
+}
+
+void WatchChangeAggregator::RemoveTarget(TargetId target_id) {
+  target_states_.erase(target_id);
+}
+
+int WatchChangeAggregator::GetCurrentDocumentCountForTarget(
+    TargetId target_id) {
+  TargetState& target_state = EnsureTargetState(target_id);
+  TargetChange target_change = target_state.ToTargetChange();
+  return target_metadata_provider_->GetRemoteKeysForTarget(target_id).size() +
+         target_change.added_documents().size() -
+         target_change.removed_documents().size();
+}
+
+void WatchChangeAggregator::RecordPendingTargetRequest(TargetId target_id) {
+  // For each request we get we need to record we need a response for it.
+  TargetState& target_state = EnsureTargetState(target_id);
+  target_state.RecordPendingTargetRequest();
+}
+
+TargetState& WatchChangeAggregator::EnsureTargetState(TargetId target_id) {
+  return target_states_[target_id];
+}
+
+bool WatchChangeAggregator::IsActiveTarget(TargetId target_id) const {
+  return TargetDataForActiveTarget(target_id) != absl::nullopt;
+}
+
+absl::optional<TargetData> WatchChangeAggregator::TargetDataForActiveTarget(
+    TargetId target_id) const {
+  auto target_state = target_states_.find(target_id);
+  return target_state != target_states_.end() &&
+                 target_state->second.IsPending()
+             ? absl::optional<TargetData>{}
+             : target_metadata_provider_->GetTargetDataForTarget(target_id);
+}
+
+void WatchChangeAggregator::ResetTarget(TargetId target_id) {
+  auto current_target_state = target_states_.find(target_id);
+  HARD_ASSERT(current_target_state != target_states_.end() &&
+                  !(current_target_state->second.IsPending()),
+              "Should only reset active targets");
+
+  target_states_[target_id] = {};
+
+  // Trigger removal for any documents currently mapped to this target. These
+  // removals will be part of the initial snapshot if Watch does not resend
+  // these documents.
+  DocumentKeySet existing_keys =
+      target_metadata_provider_->GetRemoteKeysForTarget(target_id);
+
+  for (const DocumentKey& key : existing_keys) {
+    RemoveDocumentFromTarget(target_id, key, absl::nullopt);
+  }
+}
+
+bool WatchChangeAggregator::TargetContainsDocument(TargetId target_id,
+                                                   const DocumentKey& key) {
+  const DocumentKeySet& existing_keys =
+      target_metadata_provider_->GetRemoteKeysForTarget(target_id);
+  return existing_keys.contains(key);
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.h
new file mode 100644
index 0000000..ef7943c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_event.h	
@@ -0,0 +1,437 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_REMOTE_EVENT_H_
+#define FIRESTORE_CORE_SRC_REMOTE_REMOTE_EVENT_H_
+
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/core/view_snapshot.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/document_key_set.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/remote/watch_change.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class TargetData;
+}  // namespace local
+
+namespace remote {
+
+/**
+ * Interface implemented by `RemoteStore` to expose target metadata to the
+ * `WatchChangeAggregator`.
+ */
+class TargetMetadataProvider {
+ public:
+  virtual ~TargetMetadataProvider() = default;
+
+  /**
+   * Returns the set of remote document keys for the given target ID as of the
+   * last raised snapshot.
+   */
+  virtual model::DocumentKeySet GetRemoteKeysForTarget(
+      model::TargetId target_id) const = 0;
+
+  /**
+   * Returns the TargetData for an active target ID or `nullopt` if this query
+   * has become inactive.
+   */
+  virtual absl::optional<local::TargetData> GetTargetDataForTarget(
+      model::TargetId target_id) const = 0;
+};
+
+/**
+ * A `TargetChange` specifies the set of changes for a specific target as part
+ * of an `RemoteEvent`. These changes track which documents are added,
+ * modified or removed, as well as the target's resume token and whether the
+ * target is marked CURRENT.
+ *
+ * The actual changes *to* documents are not part of the `TargetChange` since
+ * documents may be part of multiple targets.
+ */
+class TargetChange {
+ public:
+  static TargetChange CreateSynthesizedTargetChange(bool current) {
+    return TargetChange(current);
+  }
+
+  TargetChange() = default;
+
+  TargetChange(nanopb::ByteString resume_token,
+               bool current,
+               model::DocumentKeySet added_documents,
+               model::DocumentKeySet modified_documents,
+               model::DocumentKeySet removed_documents)
+      : resume_token_{std::move(resume_token)},
+        current_{current},
+        added_documents_{std::move(added_documents)},
+        modified_documents_{std::move(modified_documents)},
+        removed_documents_{std::move(removed_documents)} {
+  }
+
+  /**
+   * An opaque, server-assigned token that allows watching a target to be
+   * resumed after disconnecting without retransmitting all the data that
+   * matches the target. The resume token essentially identifies a point in time
+   * from which the server should resume sending results.
+   */
+  const nanopb::ByteString& resume_token() const {
+    return resume_token_;
+  }
+
+  /**
+   * The "current" (synced) status of this target. Note that "current" has
+   * special meaning in the RPC protocol that implies that a target is both
+   * up-to-date and consistent with the rest of the watch stream.
+   */
+  bool current() const {
+    return current_;
+  }
+
+  /**
+   * The set of documents that were newly assigned to this target as part of
+   * this remote event.
+   */
+  const model::DocumentKeySet& added_documents() const {
+    return added_documents_;
+  }
+
+  /**
+   * The set of documents that were already assigned to this target but received
+   * an update during this remote event.
+   */
+  const model::DocumentKeySet& modified_documents() const {
+    return modified_documents_;
+  }
+
+  /**
+   * The set of documents that were removed from this target as part of this
+   * remote event.
+   */
+  const model::DocumentKeySet& removed_documents() const {
+    return removed_documents_;
+  }
+
+ private:
+  explicit TargetChange(bool current) : current_{current} {
+  }
+
+  nanopb::ByteString resume_token_;
+  bool current_ = false;
+  model::DocumentKeySet added_documents_;
+  model::DocumentKeySet modified_documents_;
+  model::DocumentKeySet removed_documents_;
+};
+
+bool operator==(const TargetChange& lhs, const TargetChange& rhs);
+
+/** Tracks the internal state of a Watch target. */
+class TargetState {
+ public:
+  /**
+   * Whether this target has been marked 'current'.
+   *
+   * 'current' has special meaning in the RPC protocol: It implies that the
+   * Watch backend has sent us all changes up to the point at which the target
+   * was added and that the target is consistent with the rest of the watch
+   * stream.
+   */
+  bool current() const {
+    return current_;
+  }
+
+  /** The last resume token sent to us for this target. */
+  const nanopb::ByteString& resume_token() const {
+    return resume_token_;
+  }
+
+  /** Whether this target has pending target adds or target removes. */
+  bool IsPending() const {
+    return outstanding_responses_ != 0;
+  }
+
+  /** Whether we have modified any state that should trigger a snapshot. */
+  bool HasPendingChanges() const {
+    return has_pending_changes_;
+  }
+
+  /**
+   * Applies the resume token to the `TargetChange`, but only when it has a new
+   * value. Empty resume tokens are discarded.
+   */
+  void UpdateResumeToken(nanopb::ByteString resume_token);
+
+  /**
+   * Creates a target change from the current set of changes.
+   *
+   * To reset the document changes after raising this snapshot, call
+   * `ClearPendingChanges()`.
+   */
+  TargetChange ToTargetChange() const;
+
+  /** Resets the document changes and sets `HasPendingChanges` to false. */
+  void ClearPendingChanges();
+
+  void AddDocumentChange(const model::DocumentKey& document_key,
+                         core::DocumentViewChange::Type type);
+  void RemoveDocumentChange(const model::DocumentKey& document_key);
+  void RecordPendingTargetRequest();
+  void RecordTargetResponse();
+  void MarkCurrent();
+
+ private:
+  /**
+   * The number of outstanding responses (adds or removes) that we are waiting
+   * on. We only consider targets active that have no outstanding responses.
+   */
+  int outstanding_responses_ = 0;
+
+  /**
+   * Keeps track of the document changes since the last raised snapshot.
+   *
+   * These changes are continuously updated as we receive document updates and
+   * always reflect the current set of changes against the last issued snapshot.
+   */
+  std::unordered_map<model::DocumentKey,
+                     core::DocumentViewChange::Type,
+                     model::DocumentKeyHash>
+      document_changes_;
+
+  nanopb::ByteString resume_token_;
+
+  bool current_ = false;
+
+  /**
+   * Whether this target state should be included in the next snapshot. We
+   * initialize to true so that newly-added targets are included in the next
+   * RemoteEvent.
+   */
+  bool has_pending_changes_ = true;
+};
+
+/**
+ * An event from the RemoteStore. It is split into `TargetChanges` (changes to
+ * the state or the set of documents in our watched targets) and
+ * `DocumentUpdates` (changes to the actual documents).
+ */
+class RemoteEvent {
+ public:
+  using TargetChangeMap = std::unordered_map<model::TargetId, TargetChange>;
+  using TargetSet = std::unordered_set<model::TargetId>;
+
+  RemoteEvent(model::SnapshotVersion snapshot_version,
+              TargetChangeMap target_changes,
+              TargetSet target_mismatches,
+              model::DocumentUpdateMap document_updates,
+              model::DocumentKeySet limbo_document_changes)
+      : snapshot_version_{snapshot_version},
+        target_changes_{std::move(target_changes)},
+        target_mismatches_{std::move(target_mismatches)},
+        document_updates_{std::move(document_updates)},
+        limbo_document_changes_{std::move(limbo_document_changes)} {
+  }
+
+  /** The snapshot version this event brings us up to. */
+  const model::SnapshotVersion& snapshot_version() const {
+    return snapshot_version_;
+  }
+
+  /** A map from target to changes to the target. See `TargetChange`. */
+  const TargetChangeMap& target_changes() const {
+    return target_changes_;
+  }
+
+  /**
+   * A set of targets that is known to be inconsistent. Listens for these
+   * targets should be re-established without resume tokens.
+   */
+  const TargetSet& target_mismatches() const {
+    return target_mismatches_;
+  }
+
+  /**
+   * A set of which documents have changed or been deleted, along with the doc's
+   * new values (if not deleted).
+   */
+  const model::DocumentUpdateMap& document_updates() const {
+    return document_updates_;
+  }
+
+  /**
+   * A set of which document updates are due only to limbo resolution targets.
+   */
+  const model::DocumentKeySet& limbo_document_changes() const {
+    return limbo_document_changes_;
+  }
+
+ private:
+  model::SnapshotVersion snapshot_version_;
+  TargetChangeMap target_changes_;
+  TargetSet target_mismatches_;
+  model::DocumentUpdateMap document_updates_;
+  model::DocumentKeySet limbo_document_changes_;
+};
+
+/**
+ * A helper class to accumulate watch changes into a `RemoteEvent` and other
+ * target information.
+ */
+class WatchChangeAggregator {
+ public:
+  explicit WatchChangeAggregator(
+      TargetMetadataProvider* target_metadata_provider);
+
+  /**
+   * Processes and adds the `DocumentWatchChange` to the current set of changes.
+   */
+  void HandleDocumentChange(const DocumentWatchChange& document_change);
+
+  /**
+   * Processes and adds the `WatchTargetChange` to the current set of changes.
+   */
+  void HandleTargetChange(const WatchTargetChange& target_change);
+
+  /**
+   * Handles existence filters and synthesizes deletes for filter mismatches.
+   * Targets that are invalidated by filter mismatches are added to
+   * `pending_target_resets_`.
+   */
+  void HandleExistenceFilter(
+      const ExistenceFilterWatchChange& existence_filter);
+
+  /**
+   * Converts the current state into a remote event with the snapshot version
+   * taken from the initializer. Resets the accumulated changes before
+   * returning.
+   */
+  RemoteEvent CreateRemoteEvent(const model::SnapshotVersion& snapshot_version);
+
+  /** Removes the in-memory state for the provided target. */
+  void RemoveTarget(model::TargetId target_id);
+
+  /**
+   * Increment the number of acks needed from watch before we can consider the
+   * server to be 'in-sync' with the client's active targets.
+   */
+  void RecordPendingTargetRequest(model::TargetId target_id);
+
+ private:
+  /**
+   * Returns all `TargetId`s that the watch change applies to: either the
+   * `TargetId`s explicitly listed in the change or the `TargetId`s of all
+   * currently active targets.
+   */
+  std::vector<model::TargetId> GetTargetIds(
+      const WatchTargetChange& target_change) const;
+
+  /**
+   * Adds the provided document to the internal list of document updates and its
+   * document key to the given target's mapping.
+   */
+  void AddDocumentToTarget(model::TargetId target_id,
+                           const model::MutableDocument& document);
+
+  /**
+   * Removes the provided document from the target mapping. If the document no
+   * longer matches the target, but the document's state is still known (e.g. we
+   * know that the document was deleted or we received the change that caused
+   * the filter mismatch), the new document can be provided to update the remote
+   * document cache.
+   */
+  void RemoveDocumentFromTarget(
+      model::TargetId target_id,
+      const model::DocumentKey& key,
+      const absl::optional<model::MutableDocument>& updated_document);
+
+  /**
+   * Returns the current count of documents in the target. This includes both
+   * the number of documents that the LocalStore considers to be part of the
+   * target as well as any accumulated changes.
+   */
+  int GetCurrentDocumentCountForTarget(model::TargetId target_id);
+
+  // PORTING NOTE: this method exists only for consistency with other platforms;
+  // in C++, it's pretty much unnecessary.
+  TargetState& EnsureTargetState(model::TargetId target_id);
+
+  /**
+   * Returns true if the given `target_id` is active. Active targets are those
+   * for which there are no pending requests to add a listen and are in the
+   * current list of targets the client cares about.
+   *
+   * Clients can repeatedly listen and stop listening to targets, so this check
+   * is useful in preventing race conditions for a target where events arrive
+   * but the server hasn't yet acknowledged the intended change in state.
+   */
+  bool IsActiveTarget(model::TargetId target_id) const;
+
+  /**
+   * Returns the `TargetData` for an active target (i.e., a target that the user
+   * is still interested in that has no outstanding target change requests).
+   */
+  absl::optional<local::TargetData> TargetDataForActiveTarget(
+      model::TargetId target_id) const;
+
+  /**
+   * Resets the state of a Watch target to its initial state (e.g. sets
+   * 'current' to false, clears the resume token and removes its target mapping
+   * from all documents).
+   */
+  void ResetTarget(model::TargetId target_id);
+
+  /** Returns whether the local store considers the document to be part of the
+   * specified target. */
+  bool TargetContainsDocument(model::TargetId target_id,
+                              const model::DocumentKey& key);
+
+  /** The internal state of all tracked targets. */
+  std::unordered_map<model::TargetId, TargetState> target_states_;
+
+  /** Keeps track of the documents to update since the last raised snapshot. */
+  model::DocumentUpdateMap pending_document_updates_;
+
+  /** A mapping of document keys to their set of target IDs. */
+  std::unordered_map<model::DocumentKey,
+                     std::set<model::TargetId>,
+                     model::DocumentKeyHash>
+      pending_document_target_mappings_;
+
+  /**
+   * A list of targets with existence filter mismatches. These targets are known
+   * to be inconsistent and their listens needs to be re-established by
+   * `RemoteStore`.
+   */
+  RemoteEvent::TargetSet pending_target_resets_;
+
+  TargetMetadataProvider* target_metadata_provider_ = nullptr;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_REMOTE_EVENT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.cc
new file mode 100644
index 0000000..1ceba45
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.cc	
@@ -0,0 +1,269 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/remote_objc_bridge.h"
+
+#include <map>
+
+#include "Firestore/core/src/core/database_info.h"
+#include "Firestore/core/src/model/document.h"
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/model/snapshot_version.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "Firestore/core/src/remote/grpc_nanopb.h"
+#include "Firestore/core/src/remote/grpc_util.h"
+#include "Firestore/core/src/remote/watch_change.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "grpcpp/support/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using core::DatabaseInfo;
+using local::TargetData;
+using model::Document;
+using model::DocumentKey;
+using model::Mutation;
+using model::MutationResult;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::ByteString;
+using nanopb::MakeArray;
+using nanopb::Message;
+using nanopb::Reader;
+using remote::ByteBufferReader;
+using remote::Serializer;
+using util::StatusOr;
+
+// WatchStreamSerializer
+
+WatchStreamSerializer::WatchStreamSerializer(Serializer serializer)
+    : serializer_{std::move(serializer)} {
+}
+
+Message<google_firestore_v1_ListenRequest>
+WatchStreamSerializer::EncodeWatchRequest(const TargetData& query) const {
+  Message<google_firestore_v1_ListenRequest> result;
+
+  result->database = serializer_.EncodeDatabaseName();
+  result->which_target_change =
+      google_firestore_v1_ListenRequest_add_target_tag;
+  result->add_target = serializer_.EncodeTarget(query);
+
+  auto labels = serializer_.EncodeListenRequestLabels(query);
+  if (!labels.empty()) {
+    result->labels_count = nanopb::CheckedSize(labels.size());
+    result->labels = MakeArray<google_firestore_v1_ListenRequest_LabelsEntry>(
+        result->labels_count);
+
+    pb_size_t i = 0;
+    for (const auto& label : labels) {
+      result->labels[i] = label;
+      ++i;
+    }
+  }
+
+  return result;
+}
+
+Message<google_firestore_v1_ListenRequest>
+WatchStreamSerializer::EncodeUnwatchRequest(TargetId target_id) const {
+  Message<google_firestore_v1_ListenRequest> result;
+
+  result->database = serializer_.EncodeDatabaseName();
+  result->which_target_change =
+      google_firestore_v1_ListenRequest_remove_target_tag;
+  result->remove_target = target_id;
+
+  return result;
+}
+
+Message<google_firestore_v1_ListenResponse>
+WatchStreamSerializer::ParseResponse(Reader* reader) const {
+  return Message<google_firestore_v1_ListenResponse>::TryParse(reader);
+}
+
+std::unique_ptr<WatchChange> WatchStreamSerializer::DecodeWatchChange(
+    nanopb::Reader* reader,
+    google_firestore_v1_ListenResponse& response) const {
+  return serializer_.DecodeWatchChange(reader->context(), response);
+}
+
+SnapshotVersion WatchStreamSerializer::DecodeSnapshotVersion(
+    nanopb::Reader* reader,
+    const google_firestore_v1_ListenResponse& response) const {
+  return serializer_.DecodeVersionFromListenResponse(reader->context(),
+                                                     response);
+}
+
+// WriteStreamSerializer
+
+WriteStreamSerializer::WriteStreamSerializer(Serializer serializer)
+    : serializer_{std::move(serializer)} {
+}
+
+Message<google_firestore_v1_WriteRequest>
+WriteStreamSerializer::EncodeHandshake() const {
+  Message<google_firestore_v1_WriteRequest> result;
+
+  // The initial request cannot contain mutations, but must contain a project
+  // ID.
+  result->database = serializer_.EncodeDatabaseName();
+
+  return result;
+}
+
+Message<google_firestore_v1_WriteRequest>
+WriteStreamSerializer::EncodeWriteMutationsRequest(
+    const std::vector<Mutation>& mutations,
+    const ByteString& last_stream_token) const {
+  Message<google_firestore_v1_WriteRequest> result;
+
+  if (!mutations.empty()) {
+    result->writes_count = nanopb::CheckedSize(mutations.size());
+    result->writes = MakeArray<google_firestore_v1_Write>(result->writes_count);
+
+    for (pb_size_t i = 0; i != result->writes_count; ++i) {
+      result->writes[i] = serializer_.EncodeMutation(mutations[i]);
+    }
+  }
+
+  result->stream_token = nanopb::CopyBytesArray(last_stream_token.get());
+
+  return result;
+}
+
+Message<google_firestore_v1_WriteRequest>
+WriteStreamSerializer::EncodeEmptyMutationsList(
+    const ByteString& last_stream_token) const {
+  return EncodeWriteMutationsRequest({}, last_stream_token);
+}
+
+Message<google_firestore_v1_WriteResponse> WriteStreamSerializer::ParseResponse(
+    Reader* reader) const {
+  return Message<google_firestore_v1_WriteResponse>::TryParse(reader);
+}
+
+SnapshotVersion WriteStreamSerializer::DecodeCommitVersion(
+    nanopb::Reader* reader,
+    const google_firestore_v1_WriteResponse& proto) const {
+  return serializer_.DecodeVersion(reader->context(), proto.commit_time);
+}
+
+std::vector<MutationResult> WriteStreamSerializer::DecodeMutationResults(
+    nanopb::Reader* reader, google_firestore_v1_WriteResponse& proto) const {
+  SnapshotVersion commit_version = DecodeCommitVersion(reader, proto);
+  if (!reader->ok()) {
+    return {};
+  }
+
+  google_firestore_v1_WriteResult* writes = proto.write_results;
+  pb_size_t count = proto.write_results_count;
+  std::vector<MutationResult> results;
+  results.reserve(count);
+
+  for (pb_size_t i = 0; i != count; ++i) {
+    results.push_back(serializer_.DecodeMutationResult(
+        reader->context(), writes[i], commit_version));
+  }
+
+  return results;
+}
+
+// DatastoreSerializer
+
+DatastoreSerializer::DatastoreSerializer(const DatabaseInfo& database_info)
+    : serializer_{database_info.database_id()} {
+}
+
+Message<google_firestore_v1_CommitRequest>
+DatastoreSerializer::EncodeCommitRequest(
+    const std::vector<Mutation>& mutations) const {
+  Message<google_firestore_v1_CommitRequest> result;
+
+  result->database = serializer_.EncodeDatabaseName();
+
+  if (!mutations.empty()) {
+    result->writes_count = nanopb::CheckedSize(mutations.size());
+    result->writes = MakeArray<google_firestore_v1_Write>(result->writes_count);
+    pb_size_t i = 0;
+    for (const Mutation& mutation : mutations) {
+      result->writes[i] = serializer_.EncodeMutation(mutation);
+      ++i;
+    }
+  }
+
+  return result;
+}
+
+Message<google_firestore_v1_BatchGetDocumentsRequest>
+DatastoreSerializer::EncodeLookupRequest(
+    const std::vector<DocumentKey>& keys) const {
+  Message<google_firestore_v1_BatchGetDocumentsRequest> result;
+
+  result->database = serializer_.EncodeDatabaseName();
+  if (!keys.empty()) {
+    result->documents_count = nanopb::CheckedSize(keys.size());
+    result->documents = MakeArray<pb_bytes_array_t*>(result->documents_count);
+    pb_size_t i = 0;
+    for (const DocumentKey& key : keys) {
+      result->documents[i] = serializer_.EncodeKey(key);
+      ++i;
+    }
+  }
+
+  return result;
+}
+
+StatusOr<std::vector<model::Document>>
+DatastoreSerializer::MergeLookupResponses(
+    const std::vector<grpc::ByteBuffer>& responses) const {
+  // Sort by key.
+  std::map<DocumentKey, Document> results;
+
+  for (const auto& response : responses) {
+    ByteBufferReader reader{response};
+    auto message =
+        Message<google_firestore_v1_BatchGetDocumentsResponse>::TryParse(
+            &reader);
+
+    Document doc = serializer_.DecodeMaybeDocument(reader.context(), *message);
+    if (!reader.ok()) {
+      return reader.status();
+    }
+
+    results[doc->key()] = std::move(doc);
+  }
+
+  std::vector<Document> docs;
+  docs.reserve(results.size());
+  for (const auto& kv : results) {
+    docs.push_back(kv.second);
+  }
+
+  StatusOr<std::vector<Document>> result{std::move(docs)};
+  return result;
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.h
new file mode 100644
index 0000000..7d07480
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_objc_bridge.h	
@@ -0,0 +1,148 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_REMOTE_OBJC_BRIDGE_H_
+#define FIRESTORE_CORE_SRC_REMOTE_REMOTE_OBJC_BRIDGE_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/remote/serializer.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class TargetData;
+}  // namespace local
+
+namespace model {
+class DocumentKey;
+class SnapshotVersion;
+}  // namespace model
+
+namespace remote {
+
+class WatchChange;
+
+// TODO(varconst): remove this file?
+//
+// The original purpose of this file was to cleanly encapsulate the remaining
+// Objective-C dependencies of `remote/` folder. These dependencies no longer
+// exist, and this file makes C++ diverge from other platforms.
+//
+// On the other hand, stream classes are large, and having one easily
+// separatable aspect of their implementation (serialization) refactored out is
+// arguably a good thing. If this file were to stay (in some form, certainly
+// under a different name), other platforms would have to follow suit.
+//
+// Note: return value optimization should make returning Nanopb messages from
+// functions cheap (even though they may be large types that are relatively
+// expensive to copy).
+
+class WatchStreamSerializer {
+ public:
+  explicit WatchStreamSerializer(Serializer serializer);
+
+  nanopb::Message<google_firestore_v1_ListenRequest> EncodeWatchRequest(
+      const local::TargetData& query) const;
+  nanopb::Message<google_firestore_v1_ListenRequest> EncodeUnwatchRequest(
+      model::TargetId target_id) const;
+
+  nanopb::Message<google_firestore_v1_ListenResponse> ParseResponse(
+      nanopb::Reader* reader) const;
+  /**
+   * Decodes the listen response. Modifies the provided proto to release
+   * ownership of any Value messages.
+   */
+  std::unique_ptr<WatchChange> DecodeWatchChange(
+      nanopb::Reader* reader,
+      google_firestore_v1_ListenResponse& response) const;
+  model::SnapshotVersion DecodeSnapshotVersion(
+      nanopb::Reader* reader,
+      const google_firestore_v1_ListenResponse& response) const;
+
+ private:
+  Serializer serializer_;
+};
+
+class WriteStreamSerializer {
+ public:
+  explicit WriteStreamSerializer(Serializer serializer);
+
+  nanopb::Message<google_firestore_v1_WriteRequest> EncodeHandshake() const;
+  nanopb::Message<google_firestore_v1_WriteRequest> EncodeWriteMutationsRequest(
+      const std::vector<model::Mutation>& mutations,
+      const nanopb::ByteString& last_stream_token) const;
+  nanopb::Message<google_firestore_v1_WriteRequest> EncodeEmptyMutationsList(
+      const nanopb::ByteString& last_stream_token) const;
+
+  nanopb::Message<google_firestore_v1_WriteResponse> ParseResponse(
+      nanopb::Reader* reader) const;
+  model::SnapshotVersion DecodeCommitVersion(
+      nanopb::Reader* reader,
+      const google_firestore_v1_WriteResponse& proto) const;
+  /**
+   * Decodes the write response. Modifies the provided proto to release
+   * ownership of any Value messages.
+   */
+  std::vector<model::MutationResult> DecodeMutationResults(
+      nanopb::Reader* reader, google_firestore_v1_WriteResponse& proto) const;
+
+ private:
+  Serializer serializer_;
+};
+
+class DatastoreSerializer {
+ public:
+  explicit DatastoreSerializer(const core::DatabaseInfo& database_info);
+
+  nanopb::Message<google_firestore_v1_CommitRequest> EncodeCommitRequest(
+      const std::vector<model::Mutation>& mutations) const;
+
+  nanopb::Message<google_firestore_v1_BatchGetDocumentsRequest>
+  EncodeLookupRequest(const std::vector<model::DocumentKey>& keys) const;
+
+  /**
+   * Merges results of the streaming read together. The array is sorted by the
+   * document key.
+   */
+  util::StatusOr<std::vector<model::Document>> MergeLookupResponses(
+      const std::vector<grpc::ByteBuffer>& responses) const;
+
+  const Serializer& serializer() const {
+    return serializer_;
+  }
+
+ private:
+  Serializer serializer_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_REMOTE_OBJC_BRIDGE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.cc
new file mode 100644
index 0000000..f9658d2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.cc	
@@ -0,0 +1,571 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/remote_store.h"
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/local/local_store.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/mutation_batch_result.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/to_string.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using core::Transaction;
+using local::LocalStore;
+using local::QueryPurpose;
+using local::TargetData;
+using model::BatchId;
+using model::DocumentKeySet;
+using model::kBatchIdUnknown;
+using model::MutationBatch;
+using model::MutationBatchResult;
+using model::MutationResult;
+using model::OnlineState;
+using model::SnapshotVersion;
+using model::TargetId;
+using nanopb::ByteString;
+using util::AsyncQueue;
+using util::Status;
+
+/**
+ * The maximum number of pending writes to allow.
+ * TODO(b/35853402): Negotiate this value with the backend.
+ */
+constexpr int kMaxPendingWrites = 10;
+
+RemoteStore::RemoteStore(
+    LocalStore* local_store,
+    std::shared_ptr<Datastore> datastore,
+    const std::shared_ptr<util::AsyncQueue>& worker_queue,
+    ConnectivityMonitor* connectivity_monitor,
+    std::function<void(model::OnlineState)> online_state_handler)
+    : local_store_{local_store},
+      datastore_{std::move(datastore)},
+      online_state_tracker_{worker_queue, std::move(online_state_handler)},
+      connectivity_monitor_{NOT_NULL(connectivity_monitor)} {
+  datastore_->Start();
+
+  // Create streams (but note they're not started yet)
+  watch_stream_ = datastore_->CreateWatchStream(this);
+  write_stream_ = datastore_->CreateWriteStream(this);
+}
+
+void RemoteStore::Start() {
+  // For now, all setup is handled by `EnableNetwork`. We might expand on this
+  // in the future.
+  EnableNetwork();
+
+  connectivity_monitor_->AddCallback(
+      [this](ConnectivityMonitor::NetworkStatus network_status) {
+        if (network_status == ConnectivityMonitor::NetworkStatus::Unavailable) {
+          LOG_DEBUG(
+              "RemoteStore %s ignoring connectivity callback for unavailable "
+              "network",
+              this);
+          return;
+        }
+
+        if (CanUseNetwork()) {
+          LOG_DEBUG("RemoteStore %s restarting streams as connectivity changed",
+                    this);
+          RestartNetwork();
+        }
+      });
+}
+
+void RemoteStore::EnableNetwork() {
+  is_network_enabled_ = true;
+
+  if (CanUseNetwork()) {
+    // Load any saved stream token from persistent storage
+    write_stream_->set_last_stream_token(local_store_->GetLastStreamToken());
+
+    if (ShouldStartWatchStream()) {
+      StartWatchStream();
+    } else {
+      online_state_tracker_.UpdateState(OnlineState::Unknown);
+    }
+
+    // This will start the write stream if necessary.
+    FillWritePipeline();
+  }
+}
+
+void RemoteStore::DisableNetwork() {
+  is_network_enabled_ = false;
+  DisableNetworkInternal();
+
+  // Set the OnlineState to Offline so get()s return from cache, etc.
+  online_state_tracker_.UpdateState(OnlineState::Offline);
+}
+
+void RemoteStore::DisableNetworkInternal() {
+  watch_stream_->Stop();
+  write_stream_->Stop();
+
+  if (!write_pipeline_.empty()) {
+    LOG_DEBUG("Stopping write stream with %s pending writes",
+              write_pipeline_.size());
+    write_pipeline_.clear();
+  }
+
+  CleanUpWatchStreamState();
+}
+
+void RemoteStore::Shutdown() {
+  LOG_DEBUG("RemoteStore %s shutting down", this);
+  is_network_enabled_ = false;
+  DisableNetworkInternal();
+
+  // Set the `OnlineState` to `Unknown` (rather than `Offline`) to avoid
+  // potentially triggering spurious listener events with cached data, etc.
+  online_state_tracker_.UpdateState(OnlineState::Unknown);
+
+  datastore_->Shutdown();
+}
+
+// Watch Stream
+
+void RemoteStore::Listen(const TargetData& target_data) {
+  TargetId target_key = target_data.target_id();
+  if (listen_targets_.find(target_key) != listen_targets_.end()) {
+    return;
+  }
+
+  // Mark this as something the client is currently listening for.
+  listen_targets_[target_key] = target_data;
+
+  if (ShouldStartWatchStream()) {
+    // The listen will be sent in `OnWatchStreamOpen`
+    StartWatchStream();
+  } else if (watch_stream_->IsOpen()) {
+    SendWatchRequest(target_data);
+  }
+}
+
+void RemoteStore::StopListening(TargetId target_id) {
+  size_t num_erased = listen_targets_.erase(target_id);
+  HARD_ASSERT(num_erased == 1,
+              "StopListening: target not currently watched: %s", target_id);
+
+  // The watch stream might not be started if we're in a disconnected state
+  if (watch_stream_->IsOpen()) {
+    SendUnwatchRequest(target_id);
+  }
+  if (listen_targets_.empty()) {
+    if (watch_stream_->IsOpen()) {
+      watch_stream_->MarkIdle();
+    } else if (CanUseNetwork()) {
+      // Revert to `OnlineState::Unknown` if the watch stream is not open and we
+      // have no listeners, since without any listens to send we cannot confirm
+      // if the stream is healthy and upgrade to `OnlineState::Online`.
+      online_state_tracker_.UpdateState(OnlineState::Unknown);
+    }
+  }
+}
+
+void RemoteStore::SendWatchRequest(const TargetData& target_data) {
+  // We need to increment the the expected number of pending responses we're due
+  // from watch so we wait for the ack to process any messages from this target.
+  watch_change_aggregator_->RecordPendingTargetRequest(target_data.target_id());
+  watch_stream_->WatchQuery(target_data);
+}
+
+void RemoteStore::SendUnwatchRequest(TargetId target_id) {
+  // We need to increment the expected number of pending responses we're due
+  // from watch so we wait for the removal on the server before we process any
+  // messages from this target.
+  watch_change_aggregator_->RecordPendingTargetRequest(target_id);
+  watch_stream_->UnwatchTargetId(target_id);
+}
+
+bool RemoteStore::ShouldStartWatchStream() const {
+  return CanUseNetwork() && !watch_stream_->IsStarted() &&
+         !listen_targets_.empty();
+}
+
+void RemoteStore::StartWatchStream() {
+  HARD_ASSERT(ShouldStartWatchStream(),
+              "StartWatchStream called when ShouldStartWatchStream is false.");
+  watch_change_aggregator_ = absl::make_unique<WatchChangeAggregator>(this);
+  watch_stream_->Start();
+
+  online_state_tracker_.HandleWatchStreamStart();
+}
+
+void RemoteStore::CleanUpWatchStreamState() {
+  watch_change_aggregator_.reset();
+}
+
+void RemoteStore::OnWatchStreamOpen() {
+  // Restore any existing watches.
+  for (const auto& kv : listen_targets_) {
+    SendWatchRequest(kv.second);
+  }
+}
+
+void RemoteStore::OnWatchStreamClose(const Status& status) {
+  if (status.ok()) {
+    // Graceful stop (due to Stop() or idle timeout). Make sure that's
+    // desirable.
+    HARD_ASSERT(!ShouldStartWatchStream(),
+                "Watch stream was stopped gracefully while still needed.");
+  }
+
+  CleanUpWatchStreamState();
+
+  // If we still need the watch stream, retry the connection.
+  if (ShouldStartWatchStream()) {
+    online_state_tracker_.HandleWatchStreamFailure(status);
+
+    StartWatchStream();
+  } else {
+    // We don't need to restart the watch stream because there are no active
+    // targets. The online state is set to unknown because there is no active
+    // attempt at establishing a connection.
+    online_state_tracker_.UpdateState(OnlineState::Unknown);
+  }
+}
+
+void RemoteStore::OnWatchStreamChange(const WatchChange& change,
+                                      const SnapshotVersion& snapshot_version) {
+  // Mark the connection as Online because we got a message from the server.
+  online_state_tracker_.UpdateState(OnlineState::Online);
+
+  if (change.type() == WatchChange::Type::TargetChange) {
+    const WatchTargetChange& watch_target_change =
+        static_cast<const WatchTargetChange&>(change);
+    if (watch_target_change.state() == WatchTargetChangeState::Removed &&
+        !watch_target_change.cause().ok()) {
+      // There was an error on a target, don't wait for a consistent snapshot to
+      // raise events
+      return ProcessTargetError(watch_target_change);
+    } else {
+      watch_change_aggregator_->HandleTargetChange(watch_target_change);
+    }
+  } else if (change.type() == WatchChange::Type::Document) {
+    watch_change_aggregator_->HandleDocumentChange(
+        static_cast<const DocumentWatchChange&>(change));
+  } else {
+    HARD_ASSERT(
+        change.type() == WatchChange::Type::ExistenceFilter,
+        "Expected WatchChange to be an instance of ExistenceFilterWatchChange");
+    watch_change_aggregator_->HandleExistenceFilter(
+        static_cast<const ExistenceFilterWatchChange&>(change));
+  }
+
+  if (snapshot_version != SnapshotVersion::None() &&
+      snapshot_version >= local_store_->GetLastRemoteSnapshotVersion()) {
+    // We have received a target change with a global snapshot if the snapshot
+    // version is not equal to `SnapshotVersion::None()`.
+    RaiseWatchSnapshot(snapshot_version);
+  }
+}
+
+void RemoteStore::RaiseWatchSnapshot(const SnapshotVersion& snapshot_version) {
+  HARD_ASSERT(snapshot_version != SnapshotVersion::None(),
+              "Can't raise event for unknown SnapshotVersion");
+
+  RemoteEvent remote_event =
+      watch_change_aggregator_->CreateRemoteEvent(snapshot_version);
+
+  // Update in-memory resume tokens. `LocalStore` will update the persistent
+  // view of these when applying the completed `RemoteEvent`.
+  for (const auto& entry : remote_event.target_changes()) {
+    const TargetChange& target_change = entry.second;
+    const ByteString& resume_token = target_change.resume_token();
+
+    if (!resume_token.empty()) {
+      TargetId target_id = entry.first;
+      auto found = listen_targets_.find(target_id);
+      absl::optional<TargetData> target_data;
+      if (found != listen_targets_.end()) {
+        target_data = found->second;
+      }
+
+      // A watched target might have been removed already.
+      if (target_data) {
+        listen_targets_[target_id] =
+            target_data->WithResumeToken(resume_token, snapshot_version);
+      }
+    }
+  }
+
+  // Re-establish listens for the targets that have been invalidated by
+  // existence filter mismatches.
+  for (TargetId target_id : remote_event.target_mismatches()) {
+    auto found = listen_targets_.find(target_id);
+    if (found == listen_targets_.end()) {
+      // A watched target might have been removed already.
+      continue;
+    }
+    TargetData target_data = found->second;
+
+    // Clear the resume token for the query, since we're in a known mismatch
+    // state.
+    target_data =
+        TargetData(target_data.target(), target_id,
+                   target_data.sequence_number(), target_data.purpose());
+    listen_targets_[target_id] = target_data;
+
+    // Cause a hard reset by unwatching and rewatching immediately, but
+    // deliberately don't send a resume token so that we get a full update.
+    SendUnwatchRequest(target_id);
+
+    // Mark the query we send as being on behalf of an existence filter
+    // mismatch, but don't actually retain that in listen_targets_. This ensures
+    // that we flag the first re-listen this way without impacting future
+    // listens of this target (that might happen e.g. on reconnect).
+    TargetData request_target_data(target_data.target(), target_id,
+                                   target_data.sequence_number(),
+                                   QueryPurpose::ExistenceFilterMismatch);
+    SendWatchRequest(request_target_data);
+  }
+
+  // Finally handle remote event
+  sync_engine_->ApplyRemoteEvent(remote_event);
+}
+
+void RemoteStore::ProcessTargetError(const WatchTargetChange& change) {
+  HARD_ASSERT(!change.cause().ok(), "Handling target error without a cause");
+
+  // Ignore targets that have been removed already.
+  for (TargetId target_id : change.target_ids()) {
+    auto found = listen_targets_.find(target_id);
+    if (found != listen_targets_.end()) {
+      listen_targets_.erase(found);
+      watch_change_aggregator_->RemoveTarget(target_id);
+      sync_engine_->HandleRejectedListen(target_id, change.cause());
+    }
+  }
+}
+
+// Write Stream
+
+void RemoteStore::FillWritePipeline() {
+  BatchId last_batch_id_retrieved = write_pipeline_.empty()
+                                        ? kBatchIdUnknown
+                                        : write_pipeline_.back().batch_id();
+  while (CanAddToWritePipeline()) {
+    absl::optional<MutationBatch> batch =
+        local_store_->GetNextMutationBatch(last_batch_id_retrieved);
+    if (!batch) {
+      if (write_pipeline_.empty()) {
+        write_stream_->MarkIdle();
+      }
+      break;
+    }
+    AddToWritePipeline(*batch);
+    last_batch_id_retrieved = batch->batch_id();
+  }
+
+  if (ShouldStartWriteStream()) {
+    StartWriteStream();
+  }
+}
+
+bool RemoteStore::CanAddToWritePipeline() const {
+  return CanUseNetwork() && write_pipeline_.size() < kMaxPendingWrites;
+}
+
+void RemoteStore::AddToWritePipeline(const MutationBatch& batch) {
+  HARD_ASSERT(CanAddToWritePipeline(),
+              "AddToWritePipeline called when pipeline is full");
+
+  write_pipeline_.push_back(batch);
+
+  if (write_stream_->IsOpen() && write_stream_->handshake_complete()) {
+    write_stream_->WriteMutations(batch.mutations());
+  }
+}
+
+bool RemoteStore::ShouldStartWriteStream() const {
+  return CanUseNetwork() && !write_stream_->IsStarted() &&
+         !write_pipeline_.empty();
+}
+
+void RemoteStore::StartWriteStream() {
+  HARD_ASSERT(ShouldStartWriteStream(),
+              "StartWriteStream called when ShouldStartWriteStream is false.");
+  write_stream_->Start();
+}
+
+void RemoteStore::OnWriteStreamOpen() {
+  write_stream_->WriteHandshake();
+}
+
+void RemoteStore::OnWriteStreamHandshakeComplete() {
+  // Record the stream token.
+  local_store_->SetLastStreamToken(write_stream_->last_stream_token());
+
+  // Send the write pipeline now that the stream is established.
+  for (const MutationBatch& write : write_pipeline_) {
+    write_stream_->WriteMutations(write.mutations());
+  }
+}
+
+void RemoteStore::OnWriteStreamMutationResult(
+    SnapshotVersion commit_version,
+    std::vector<MutationResult> mutation_results) {
+  // This is a response to a write containing mutations and should be correlated
+  // to the first write in our write pipeline.
+  HARD_ASSERT(!write_pipeline_.empty(), "Got result for empty write pipeline");
+
+  MutationBatch batch = write_pipeline_.front();
+  write_pipeline_.erase(write_pipeline_.begin());
+
+  MutationBatchResult batch_result(std::move(batch), commit_version,
+                                   std::move(mutation_results),
+                                   write_stream_->last_stream_token());
+  sync_engine_->HandleSuccessfulWrite(std::move(batch_result));
+
+  // It's possible that with the completion of this mutation another slot has
+  // freed up.
+  FillWritePipeline();
+}
+
+void RemoteStore::OnWriteStreamClose(const Status& status) {
+  if (status.ok()) {
+    // Graceful stop (due to Stop() or idle timeout). Make sure that's
+    // desirable.
+    HARD_ASSERT(!ShouldStartWriteStream(),
+                "Write stream was stopped gracefully while still needed.");
+  }
+
+  // If the write stream closed due to an error, invoke the error callbacks if
+  // there are pending writes.
+  if (!status.ok() && !write_pipeline_.empty()) {
+    // TODO(varconst): handle UNAUTHENTICATED status, see
+    // go/firestore-client-errors
+    if (write_stream_->handshake_complete()) {
+      // This error affects the actual writes.
+      HandleWriteError(status);
+    } else {
+      // If there was an error before the handshake finished, it's possible that
+      // the server is unable to process the stream token we're sending.
+      // (Perhaps it's too old?)
+      HandleHandshakeError(status);
+    }
+  }
+
+  // The write stream might have been started by refilling the write pipeline
+  // for failed writes
+  if (ShouldStartWriteStream()) {
+    StartWriteStream();
+  }
+}
+
+void RemoteStore::HandleHandshakeError(const Status& status) {
+  HARD_ASSERT(!status.ok(), "Handling write error with status OK.");
+
+  // Reset the token if it's a permanent error, signaling the write stream is
+  // no longer valid. Note that the handshake does not count as a write: see
+  // comments on `Datastore::IsPermanentWriteError` for details.
+  if (Datastore::IsPermanentError(status)) {
+    std::string token = util::ToString(write_stream_->last_stream_token());
+    LOG_DEBUG(
+        "RemoteStore %s error before completed handshake; resetting "
+        "stream token %s: "
+        "error code: '%s', details: '%s'",
+        this, token, status.code(), status.error_message());
+    write_stream_->set_last_stream_token({});
+    local_store_->SetLastStreamToken({});
+  } else {
+    // Some other error, don't reset stream token. Our stream logic will just
+    // retry with exponential backoff.
+  }
+}
+
+void RemoteStore::HandleWriteError(const Status& status) {
+  HARD_ASSERT(!status.ok(), "Handling write error with status OK.");
+
+  // Only handle permanent errors here. If it's transient, just let the retry
+  // logic kick in.
+  if (!Datastore::IsPermanentWriteError(status)) {
+    return;
+  }
+
+  // If this was a permanent error, the request itself was the problem so it's
+  // not going to succeed if we resend it.
+  MutationBatch batch = write_pipeline_.front();
+  write_pipeline_.erase(write_pipeline_.begin());
+
+  // In this case it's also unlikely that the server itself is melting
+  // down--this was just a bad request so inhibit backoff on the next restart.
+  write_stream_->InhibitBackoff();
+
+  sync_engine_->HandleRejectedWrite(batch.batch_id(), status);
+
+  // It's possible that with the completion of this mutation another slot has
+  // freed up.
+  FillWritePipeline();
+}
+
+bool RemoteStore::CanUseNetwork() const {
+  // PORTING NOTE: This method exists mostly because web also has to take into
+  // account primary vs. secondary state.
+  return is_network_enabled_;
+}
+
+std::shared_ptr<Transaction> RemoteStore::CreateTransaction() {
+  return std::make_shared<Transaction>(datastore_.get());
+}
+
+DocumentKeySet RemoteStore::GetRemoteKeysForTarget(TargetId target_id) const {
+  return sync_engine_->GetRemoteKeys(target_id);
+}
+
+absl::optional<TargetData> RemoteStore::GetTargetDataForTarget(
+    TargetId target_id) const {
+  auto found = listen_targets_.find(target_id);
+  return found != listen_targets_.end() ? found->second
+                                        : absl::optional<TargetData>{};
+}
+
+void RemoteStore::RestartNetwork() {
+  is_network_enabled_ = false;
+  DisableNetworkInternal();
+  online_state_tracker_.UpdateState(OnlineState::Unknown);
+  write_stream_->InhibitBackoff();
+  watch_stream_->InhibitBackoff();
+  EnableNetwork();
+}
+
+void RemoteStore::HandleCredentialChange() {
+  if (CanUseNetwork()) {
+    // Tear down and re-create our network streams. This will ensure we get a
+    // fresh auth token for the new user and re-fill the write pipeline with new
+    // mutations from the `LocalStore` (since mutations are per-user).
+    LOG_DEBUG("RemoteStore %s restarting streams for new credential", this);
+    RestartNetwork();
+  }
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.h
new file mode 100644
index 0000000..56d5b2c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/remote_store.h	
@@ -0,0 +1,313 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_REMOTE_STORE_H_
+#define FIRESTORE_CORE_SRC_REMOTE_REMOTE_STORE_H_
+
+#include <memory>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/core/transaction.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/mutation_batch.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/remote/datastore.h"
+#include "Firestore/core/src/remote/online_state_tracker.h"
+#include "Firestore/core/src/remote/remote_event.h"
+#include "Firestore/core/src/remote/watch_change.h"
+#include "Firestore/core/src/remote/watch_stream.h"
+#include "Firestore/core/src/remote/write_stream.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class LocalStore;
+}  // namespace local
+
+namespace remote {
+
+class ConnectivityMonitor;
+
+/**
+ * A callback interface for events from remote store.
+ */
+class RemoteStoreCallback {
+ public:
+  virtual ~RemoteStoreCallback() = default;
+
+  /**
+   * Applies a remote event to the sync engine, notifying any views of the
+   * changes, and releasing any pending mutation batches that would become
+   * visible because of the snapshot version the remote event contains.
+   */
+  virtual void ApplyRemoteEvent(const RemoteEvent& remote_event) = 0;
+
+  /**
+   * Handles rejection of listen for the given target id. This can be triggered
+   * by the backend for any active target.
+   *
+   * @param target_id The target ID corresponding to a listen initiated via
+   * RemoteStore::Listen()
+   * @param error A description of the condition that has forced the rejection.
+   * Nearly always this will be an indication that the user is no longer
+   * authorized to see the data matching the target.
+   */
+  virtual void HandleRejectedListen(model::TargetId target_id,
+                                    util::Status error) = 0;
+
+  /**
+   * Applies the result of a successful write of a mutation batch to the sync
+   * engine, emitting snapshots in any views that the mutation applies to, and
+   * removing the batch from the mutation queue.
+   */
+  virtual void HandleSuccessfulWrite(
+      model::MutationBatchResult batch_result) = 0;
+
+  /**
+   * Rejects the batch, removing the batch from the mutation queue, recomputing
+   * the local view of any documents affected by the batch and then, emitting
+   * snapshots with the reverted value.
+   */
+  virtual void HandleRejectedWrite(model::BatchId batch_id,
+                                   util::Status error) = 0;
+
+  /**
+   * Applies an OnlineState change to the sync engine and notifies any views of
+   * the change.
+   */
+  virtual void HandleOnlineStateChange(model::OnlineState online_state) = 0;
+
+  /**
+   * Returns the set of remote document keys for the given target ID. This list
+   * includes the documents that were assigned to the target when we received
+   * the last snapshot.
+   */
+  virtual model::DocumentKeySet GetRemoteKeys(
+      model::TargetId target_id) const = 0;
+};
+
+class RemoteStore : public TargetMetadataProvider,
+                    public WatchStreamCallback,
+                    public WriteStreamCallback {
+ public:
+  RemoteStore(local::LocalStore* local_store,
+              std::shared_ptr<Datastore> datastore,
+              const std::shared_ptr<util::AsyncQueue>& worker_queue,
+              ConnectivityMonitor* connectivity_monitor,
+              std::function<void(model::OnlineState)> online_state_handler);
+
+  void set_sync_engine(RemoteStoreCallback* sync_engine) {
+    sync_engine_ = sync_engine;
+  }
+
+  /**
+   * Starts up the remote store, creating streams, restoring state from
+   * `LocalStore`, etc.
+   */
+  void Start();
+
+  /**
+   * Shuts down the remote store, tearing down connections and otherwise
+   * cleaning up.
+   */
+  void Shutdown();
+
+  /**
+   * Temporarily disables the network. The network can be re-enabled using
+   * 'EnableNetwork'.
+   */
+  void DisableNetwork();
+
+  /**
+   * Re-enables the network. Only to be called as the counterpart to
+   * 'DisableNetwork'.
+   */
+  void EnableNetwork();
+
+  bool CanUseNetwork() const;
+
+  /**
+   * Tells the `RemoteStore` that the currently authenticated user has changed.
+   *
+   * In response the remote store tears down streams and clears up any tracked
+   * operations that should not persist across users. Restarts the streams if
+   * appropriate.
+   */
+  void HandleCredentialChange();
+
+  /**
+   * Listens to the target identified by the given `TargetData`.
+   *
+   * It is a no-op if the target of the given target data is already being
+   * listened to.
+   */
+  void Listen(const local::TargetData& target_data);
+
+  /**
+   * Stops listening to the target with the given target ID.
+   *
+   * It is an error if the given target id is not being listened to.
+   */
+  void StopListening(model::TargetId target_id);
+
+  /**
+   * Attempts to fill our write pipeline with writes from the `LocalStore`.
+   *
+   * Called internally to bootstrap or refill the write pipeline and by
+   * `SyncEngine` whenever there are new mutations to process.
+   *
+   * Starts the write stream if necessary.
+   */
+  void FillWritePipeline();
+
+  /**
+   * Queues additional writes to be sent to the write stream, sending them
+   * immediately if the write stream is established.
+   */
+  void AddToWritePipeline(const model::MutationBatch& batch);
+
+  /** Returns a new transaction backed by this remote store. */
+  // TODO(c++14): return a plain value when it becomes possible to move
+  // `Transaction` into lambdas.
+  std::shared_ptr<core::Transaction> CreateTransaction();
+
+  model::DocumentKeySet GetRemoteKeysForTarget(
+      model::TargetId target_id) const override;
+  absl::optional<local::TargetData> GetTargetDataForTarget(
+      model::TargetId target_id) const override;
+
+  void OnWatchStreamOpen() override;
+  void OnWatchStreamChange(
+      const WatchChange& change,
+      const model::SnapshotVersion& snapshot_version) override;
+  void OnWatchStreamClose(const util::Status& status) override;
+
+  void OnWriteStreamOpen() override;
+  void OnWriteStreamHandshakeComplete() override;
+  void OnWriteStreamClose(const util::Status& status) override;
+  void OnWriteStreamMutationResult(
+      model::SnapshotVersion commit_version,
+      std::vector<model::MutationResult> mutation_results) override;
+
+ private:
+  void RestartNetwork();
+  void DisableNetworkInternal();
+
+  void SendWatchRequest(const local::TargetData& target_data);
+  void SendUnwatchRequest(model::TargetId target_id);
+
+  /**
+   * Takes a batch of changes from the `Datastore`, repackages them as a
+   * `RemoteEvent`, and passes that on to the `SyncEngine`.
+   */
+  void RaiseWatchSnapshot(const model::SnapshotVersion& snapshot_version);
+
+  /** Process a target error and passes the error along to `SyncEngine`. */
+  void ProcessTargetError(const WatchTargetChange& change);
+
+  /**
+   * Returns true if we can add to the write pipeline (i.e. it is not full and
+   * the network is enabled).
+   */
+  bool CanAddToWritePipeline() const;
+
+  void StartWriteStream();
+
+  /**
+   * Returns true if the network is enabled, the write stream has not yet been
+   * started and there are pending writes.
+   */
+  bool ShouldStartWriteStream() const;
+
+  void HandleHandshakeError(const util::Status& status);
+  void HandleWriteError(const util::Status& status);
+
+  void StartWatchStream();
+
+  /**
+   * Returns true if the network is enabled, the watch stream has not yet been
+   * started and there are active watch targets.
+   */
+  bool ShouldStartWatchStream() const;
+
+  void CleanUpWatchStreamState();
+
+  RemoteStoreCallback* sync_engine_ = nullptr;
+
+  /**
+   * The local store, used to fill the write pipeline with outbound mutations
+   * and resolve existence filter mismatches.
+   */
+  local::LocalStore* local_store_ = nullptr;
+
+  /** The client-side proxy for interacting with the backend. */
+  std::shared_ptr<Datastore> datastore_;
+
+  /**
+   * A mapping of watched targets that the client cares about tracking and the
+   * user has explicitly called a 'listen' for this target.
+   *
+   * These targets may or may not have been sent to or acknowledged by the
+   * server. On re-establishing the listen stream, these targets should be sent
+   * to the server. The targets removed with unlistens are removed eagerly
+   * without waiting for confirmation from the listen stream.
+   */
+  std::unordered_map<model::TargetId, local::TargetData> listen_targets_;
+
+  OnlineStateTracker online_state_tracker_;
+
+  ConnectivityMonitor* connectivity_monitor_ = nullptr;
+
+  /**
+   * Set to true by `EnableNetwork` and false by `DisableNetwork` and indicates
+   * the user-preferred network state.
+   */
+  bool is_network_enabled_ = false;
+
+  std::shared_ptr<WatchStream> watch_stream_;
+  std::shared_ptr<WriteStream> write_stream_;
+  std::unique_ptr<WatchChangeAggregator> watch_change_aggregator_;
+
+  /**
+   * A list of up to `kMaxPendingWrites` writes that we have fetched from the
+   * `LocalStore` via `FillWritePipeline` and have or will send to the write
+   * stream.
+   *
+   * Whenever `write_pipeline_` is not empty, the `RemoteStore` will attempt to
+   * start or restart the write stream. When the stream is established, the
+   * writes in the pipeline will be sent in order.
+   *
+   * Writes remain in `write_pipeline_` until they are acknowledged by the
+   * backend and thus will automatically be re-sent if the stream is interrupted
+   * / restarted before they're acknowledged.
+   *
+   * Write responses from the backend are linked to their originating request
+   * purely based on order, and so we can just remove writes from the front of
+   * the `write_pipeline_` as we receive responses.
+   */
+  std::vector<model::MutationBatch> write_pipeline_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_REMOTE_STORE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.cc
new file mode 100644
index 0000000..a232c05
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.cc	
@@ -0,0 +1,1401 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/serializer.h"
+
+#include <pb_decode.h>
+#include <pb_encode.h>
+
+#include <algorithm>
+#include <functional>
+#include <limits>
+#include <map>
+#include <set>
+#include <string>
+#include <utility>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h"
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/core/bound.h"
+#include "Firestore/core/src/core/field_filter.h"
+#include "Firestore/core/src/core/query.h"
+#include "Firestore/core/src/local/target_data.h"
+#include "Firestore/core/src/model/delete_mutation.h"
+#include "Firestore/core/src/model/field_path.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/patch_mutation.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/model/server_timestamp_util.h"
+#include "Firestore/core/src/model/set_mutation.h"
+#include "Firestore/core/src/model/value_util.h"
+#include "Firestore/core/src/model/verify_mutation.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/nanopb_util.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "Firestore/core/src/timestamp_internal.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/algorithm/container.h"
+#include "absl/types/span.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using core::Bound;
+using core::CollectionGroupId;
+using core::Direction;
+using core::FieldFilter;
+using core::Filter;
+using core::FilterList;
+using core::OrderBy;
+using core::OrderByList;
+using core::Query;
+using core::Target;
+using local::QueryPurpose;
+using local::TargetData;
+using model::ArrayTransform;
+using model::DatabaseId;
+using model::DeepClone;
+using model::DeleteMutation;
+using model::DocumentKey;
+using model::EncodeServerTimestamp;
+using model::FieldMask;
+using model::FieldPath;
+using model::FieldTransform;
+using model::IsNaNValue;
+using model::IsNullValue;
+using model::MutableDocument;
+using model::Mutation;
+using model::MutationResult;
+using model::NaNValue;
+using model::NullValue;
+using model::NumericIncrementTransform;
+using model::ObjectValue;
+using model::PatchMutation;
+using model::Precondition;
+using model::ResourcePath;
+using model::ServerTimestampTransform;
+using model::SetMutation;
+using model::SnapshotVersion;
+using model::TargetId;
+using model::TransformOperation;
+using model::VerifyMutation;
+using nanopb::ByteString;
+using nanopb::CheckedSize;
+using nanopb::MakeArray;
+using nanopb::MakeMessage;
+using nanopb::MakeSharedMessage;
+using nanopb::MakeStringView;
+using nanopb::Message;
+using nanopb::ReleaseFieldOwnership;
+using nanopb::SafeReadBoolean;
+using nanopb::SetRepeatedField;
+using nanopb::SharedMessage;
+using nanopb::Writer;
+using remote::WatchChange;
+using util::ReadContext;
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+
+pb_bytes_array_t* Serializer::EncodeString(const std::string& str) {
+  return nanopb::MakeBytesArray(str);
+}
+
+std::string Serializer::DecodeString(const pb_bytes_array_t* str) {
+  return nanopb::MakeString(str);
+}
+
+namespace {
+
+/**
+ * Creates the prefix for a fully qualified resource path, without a local path
+ * on the end.
+ */
+ResourcePath DatabaseName(const DatabaseId& database_id) {
+  return ResourcePath{"projects", database_id.project_id(), "databases",
+                      database_id.database_id()};
+}
+
+/**
+ * Validates that a path has a prefix that looks like a valid encoded
+ * database ID.
+ */
+bool IsValidResourceName(const ResourcePath& path) {
+  // Resource names have at least 4 components (project ID, database ID)
+  // and commonly the (root) resource type, e.g. documents
+  return path.size() >= 4 && path[0] == "projects" && path[2] == "databases";
+}
+
+/**
+ * Decodes a fully qualified resource name into a resource path and validates
+ * that there is a project and database encoded in the path along with a local
+ * path.
+ */
+ResourcePath ExtractLocalPathFromResourceName(
+    ReadContext* context, const ResourcePath& resource_name) {
+  if (resource_name.size() <= 4 || resource_name[4] != "documents") {
+    context->Fail(StringFormat("Tried to deserialize invalid key %s",
+                               resource_name.CanonicalString()));
+    return ResourcePath{};
+  }
+  return resource_name.PopFirst(5);
+}
+
+Filter InvalidFilter() {
+  // The exact value doesn't matter. Note that there's no way to create the base
+  // class `Filter`, so it has to be one of the derived classes.
+  return FieldFilter::Create({}, {},
+                             MakeSharedMessage(google_firestore_v1_Value{}));
+}
+
+FieldPath InvalidFieldPath() {
+  return FieldPath::EmptyPath();
+}
+
+}  // namespace
+
+Serializer::Serializer(DatabaseId database_id)
+    : database_id_(std::move(database_id)) {
+}
+
+pb_bytes_array_t* Serializer::EncodeDatabaseName() const {
+  return EncodeString(DatabaseName(database_id_).CanonicalString());
+}
+
+pb_bytes_array_t* Serializer::EncodeKey(const DocumentKey& key) const {
+  return EncodeResourceName(database_id_, key.path());
+}
+
+void Serializer::ValidateDocumentKeyPath(
+    ReadContext* context, const ResourcePath& resource_name) const {
+  if (resource_name.size() < 5) {
+    context->Fail(
+        StringFormat("Attempted to decode invalid key: '%s'. Should have at "
+                     "least 5 segments.",
+                     resource_name.CanonicalString()));
+  } else if (resource_name[1] != database_id_.project_id()) {
+    context->Fail(
+        StringFormat("Tried to deserialize key from different project. "
+                     "Expected: '%s'. Found: '%s'. (Full key: '%s')",
+                     database_id_.project_id(), resource_name[1],
+                     resource_name.CanonicalString()));
+  } else if (resource_name[3] != database_id_.database_id()) {
+    context->Fail(
+        StringFormat("Tried to deserialize key from different database. "
+                     "Expected: '%s'. Found: '%s'. (Full key: '%s')",
+                     database_id_.database_id(), resource_name[3],
+                     resource_name.CanonicalString()));
+  }
+}
+
+DocumentKey Serializer::DecodeKey(ReadContext* context,
+                                  const pb_bytes_array_t* name) const {
+  ResourcePath resource_name =
+      DecodeResourceName(context, MakeStringView(name));
+  ValidateDocumentKeyPath(context, resource_name);
+
+  return DecodeKey(context, resource_name);
+}
+
+DocumentKey Serializer::DecodeKey(ReadContext* context,
+                                  const ResourcePath& resource_name) const {
+  ResourcePath local_path =
+      ExtractLocalPathFromResourceName(context, resource_name);
+
+  if (!DocumentKey::IsDocumentKey(local_path)) {
+    context->Fail(StringFormat("Invalid document key path: %s",
+                               local_path.CanonicalString()));
+  }
+
+  // Avoid assertion failures in DocumentKey if local_path is invalid.
+  if (!context->status().ok()) return DocumentKey{};
+  return DocumentKey{std::move(local_path)};
+}
+
+pb_bytes_array_t* Serializer::EncodeQueryPath(const ResourcePath& path) const {
+  return EncodeResourceName(database_id_, path);
+}
+
+ResourcePath Serializer::DecodeQueryPath(ReadContext* context,
+                                         absl::string_view name) const {
+  ResourcePath resource = DecodeResourceName(context, name);
+  if (resource.size() == 4) {
+    // In v1beta1 queries for collections at the root did not have a trailing
+    // "/documents". In v1 all resource paths contain "/documents". Preserve the
+    // ability to read the v1beta1 form for compatibility with queries persisted
+    // in the local target cache.
+    return ResourcePath::Empty();
+  } else {
+    return ExtractLocalPathFromResourceName(context, resource);
+  }
+}
+
+pb_bytes_array_t* Serializer::EncodeResourceName(
+    const DatabaseId& database_id, const ResourcePath& path) const {
+  return Serializer::EncodeString(DatabaseName(database_id)
+                                      .Append("documents")
+                                      .Append(path)
+                                      .CanonicalString());
+}
+
+ResourcePath Serializer::DecodeResourceName(ReadContext* context,
+                                            absl::string_view encoded) const {
+  auto resource = ResourcePath::FromStringView(encoded);
+  if (!IsValidResourceName(resource)) {
+    context->Fail(StringFormat("Tried to deserialize an invalid key: %s",
+                               resource.CanonicalString()));
+  }
+  return resource;
+}
+
+google_firestore_v1_Document Serializer::EncodeDocument(
+    const DocumentKey& key, const ObjectValue& object_value) const {
+  google_firestore_v1_Document result{};
+
+  result.name = EncodeKey(key);
+
+  // Encode Document.fields (unless it's empty)
+  const google_firestore_v1_MapValue& map_value = object_value.Get().map_value;
+  SetRepeatedField(
+      &result.fields, &result.fields_count,
+      absl::Span<google_firestore_v1_MapValue_FieldsEntry>(
+          map_value.fields, map_value.fields_count),
+      [](const google_firestore_v1_MapValue_FieldsEntry& entry) {
+        // TODO(mrschmidt): Figure out how to remove this copy
+        return google_firestore_v1_Document_FieldsEntry{
+            nanopb::MakeBytesArray(entry.key->bytes, entry.key->size),
+            *DeepClone(entry.value).release()};
+      });
+
+  // Skip Document.create_time and Document.update_time, since they're
+  // output-only fields.
+
+  return result;
+}
+
+MutableDocument Serializer::DecodeMaybeDocument(
+    ReadContext* context,
+    google_firestore_v1_BatchGetDocumentsResponse& response) const {
+  switch (response.which_result) {
+    case google_firestore_v1_BatchGetDocumentsResponse_found_tag:
+      return DecodeFoundDocument(context, response);
+    case google_firestore_v1_BatchGetDocumentsResponse_missing_tag:
+      return DecodeMissingDocument(context, response);
+    default:
+      context->Fail(
+          StringFormat("Unknown result case: %s", response.which_result));
+      return MutableDocument::InvalidDocument({});
+  }
+
+  UNREACHABLE();
+}
+
+MutableDocument Serializer::DecodeFoundDocument(
+    ReadContext* context,
+    google_firestore_v1_BatchGetDocumentsResponse& response) const {
+  HARD_ASSERT(response.which_result ==
+                  google_firestore_v1_BatchGetDocumentsResponse_found_tag,
+              "Tried to deserialize a found document from a missing document.");
+
+  DocumentKey key = DecodeKey(context, response.found.name);
+  ObjectValue value = ObjectValue::FromFieldsEntry(response.found.fields,
+                                                   response.found.fields_count);
+  SnapshotVersion version = DecodeVersion(context, response.found.update_time);
+
+  if (version == SnapshotVersion::None()) {
+    context->Fail("Got a document response with no snapshot version");
+  }
+
+  return MutableDocument::FoundDocument(std::move(key), version,
+                                        std::move(value));
+}
+
+MutableDocument Serializer::DecodeMissingDocument(
+    ReadContext* context,
+    const google_firestore_v1_BatchGetDocumentsResponse& response) const {
+  HARD_ASSERT(response.which_result ==
+                  google_firestore_v1_BatchGetDocumentsResponse_missing_tag,
+              "Tried to deserialize a missing document from a found document.");
+
+  DocumentKey key = DecodeKey(context, response.missing);
+  SnapshotVersion version = DecodeVersion(context, response.read_time);
+
+  if (version == SnapshotVersion::None()) {
+    context->Fail("Got a no document response with no snapshot version");
+  }
+
+  return MutableDocument::NoDocument(std::move(key), version);
+}
+
+google_firestore_v1_Write Serializer::EncodeMutation(
+    const Mutation& mutation) const {
+  HARD_ASSERT(mutation.is_valid(), "Invalid mutation encountered.");
+  google_firestore_v1_Write result{};
+
+  if (!mutation.precondition().is_none()) {
+    result.has_current_document = true;
+    result.current_document = EncodePrecondition(mutation.precondition());
+  }
+
+  SetRepeatedField(&result.update_transforms, &result.update_transforms_count,
+                   mutation.field_transforms(), [&](const FieldTransform& t) {
+                     return EncodeFieldTransform(t);
+                   });
+
+  switch (mutation.type()) {
+    case Mutation::Type::Set: {
+      result.which_operation = google_firestore_v1_Write_update_tag;
+      result.update = EncodeDocument(
+          mutation.key(), static_cast<const SetMutation&>(mutation).value());
+      return result;
+    }
+
+    case Mutation::Type::Patch: {
+      result.which_operation = google_firestore_v1_Write_update_tag;
+      auto patch_mutation = static_cast<const PatchMutation&>(mutation);
+      result.update = EncodeDocument(mutation.key(), patch_mutation.value());
+      // Note: the fact that this field is set (even if the mask is empty) is
+      // what makes the backend treat this as a patch mutation, not a set
+      // mutation.
+      result.has_update_mask = true;
+      if (patch_mutation.mask().size() != 0) {
+        result.update_mask = EncodeFieldMask(patch_mutation.mask());
+      }
+      return result;
+    }
+
+    case Mutation::Type::Delete: {
+      result.which_operation = google_firestore_v1_Write_delete_tag;
+      result.delete_ = EncodeKey(mutation.key());
+      return result;
+    }
+
+    case Mutation::Type::Verify: {
+      result.which_operation = google_firestore_v1_Write_verify_tag;
+      result.verify = EncodeKey(mutation.key());
+      return result;
+    }
+  }
+
+  UNREACHABLE();
+}
+
+Mutation Serializer::DecodeMutation(ReadContext* context,
+                                    google_firestore_v1_Write& mutation) const {
+  auto precondition = Precondition::None();
+  if (mutation.has_current_document) {
+    precondition = DecodePrecondition(context, mutation.current_document);
+  }
+
+  std::vector<FieldTransform> field_transforms;
+  for (size_t i = 0; i < mutation.update_transforms_count; i++) {
+    field_transforms.push_back(
+        DecodeFieldTransform(context, mutation.update_transforms[i]));
+  }
+
+  switch (mutation.which_operation) {
+    case google_firestore_v1_Write_update_tag: {
+      DocumentKey key = DecodeKey(context, mutation.update.name);
+      ObjectValue value = ObjectValue::FromFieldsEntry(
+          mutation.update.fields, mutation.update.fields_count);
+      if (mutation.has_update_mask) {
+        FieldMask mask = DecodeFieldMask(context, mutation.update_mask);
+        return PatchMutation(std::move(key), std::move(value), std::move(mask),
+                             std::move(precondition),
+                             std::move(field_transforms));
+      } else {
+        return SetMutation(std::move(key), std::move(value),
+                           std::move(precondition),
+                           std::move(field_transforms));
+      }
+    }
+
+    case google_firestore_v1_Write_delete_tag:
+      return DeleteMutation(DecodeKey(context, mutation.delete_),
+                            std::move(precondition));
+
+    case google_firestore_v1_Write_verify_tag: {
+      return VerifyMutation(DecodeKey(context, mutation.verify),
+                            std::move(precondition));
+    }
+
+    default:
+      context->Fail(StringFormat("Unknown mutation operation: %s",
+                                 mutation.which_operation));
+      return {};
+  }
+
+  UNREACHABLE();
+}
+
+/* static */
+google_firestore_v1_Precondition Serializer::EncodePrecondition(
+    const Precondition& precondition) {
+  google_firestore_v1_Precondition result{};
+
+  switch (precondition.type()) {
+    case Precondition::Type::None:
+      HARD_FAIL("Can't serialize an empty precondition");
+
+    case Precondition::Type::UpdateTime:
+      result.which_condition_type =
+          google_firestore_v1_Precondition_update_time_tag;
+      result.update_time = EncodeVersion(precondition.update_time());
+      return result;
+
+    case Precondition::Type::Exists:
+      result.which_condition_type = google_firestore_v1_Precondition_exists_tag;
+      result.exists = precondition.exists();
+      return result;
+  }
+
+  UNREACHABLE();
+}
+
+/* static */
+Precondition Serializer::DecodePrecondition(
+    ReadContext* context,
+    const google_firestore_v1_Precondition& precondition) {
+  switch (precondition.which_condition_type) {
+    // 0 => type unset. nanopb doesn't provide a constant for this, so we use a
+    // raw integer.
+    case 0:
+      return Precondition::None();
+    case google_firestore_v1_Precondition_exists_tag: {
+      // TODO(rsgowman): Refactor with other instance of bit_cast.
+
+      // Due to the nanopb implementation, precondition.exists could be an
+      // integer other than 0 or 1, (such as 2). This leads to undefined
+      // behaviour when it's read as a boolean. eg. on at least gcc, the value
+      // is treated as both true *and* false. So we'll instead memcpy to an
+      // integer (via absl::bit_cast) and compare with 0.
+      int bool_as_int = absl::bit_cast<int8_t>(precondition.exists);
+      return Precondition::Exists(bool_as_int != 0);
+    }
+    case google_firestore_v1_Precondition_update_time_tag:
+      return Precondition::UpdateTime(
+          DecodeVersion(context, precondition.update_time));
+  }
+
+  context->Fail(StringFormat("Unknown Precondition type: %s",
+                             precondition.which_condition_type));
+  return Precondition::None();
+}
+
+/* static */
+google_firestore_v1_DocumentMask Serializer::EncodeFieldMask(
+    const FieldMask& mask) {
+  google_firestore_v1_DocumentMask result{};
+  SetRepeatedField(
+      &result.field_paths, &result.field_paths_count, mask,
+      [&](const FieldPath& path) { return EncodeFieldPath(path); });
+  return result;
+}
+
+/* static */
+FieldMask Serializer::DecodeFieldMask(
+    ReadContext* context, const google_firestore_v1_DocumentMask& mask) {
+  std::set<FieldPath> fields;
+  for (size_t i = 0; i < mask.field_paths_count; i++) {
+    fields.insert(DecodeFieldPath(context, mask.field_paths[i]));
+  }
+  return FieldMask(std::move(fields));
+}
+
+google_firestore_v1_DocumentTransform_FieldTransform
+Serializer::EncodeFieldTransform(const FieldTransform& field_transform) const {
+  using Type = TransformOperation::Type;
+
+  google_firestore_v1_DocumentTransform_FieldTransform proto{};
+  proto.field_path = EncodeFieldPath(field_transform.path());
+
+  switch (field_transform.transformation().type()) {
+    case Type::ServerTimestamp:
+      proto.which_transform_type =
+          google_firestore_v1_DocumentTransform_FieldTransform_set_to_server_value_tag;  // NOLINT
+      proto.set_to_server_value =
+          google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME;  // NOLINT
+      return proto;
+
+    case Type::ArrayUnion:
+      proto.which_transform_type =
+          google_firestore_v1_DocumentTransform_FieldTransform_append_missing_elements_tag;  // NOLINT
+      // TODO(mrschmidt): Figure out how to remove this copy
+      proto.append_missing_elements =
+          *DeepClone(
+               ArrayTransform(field_transform.transformation()).elements())
+               .release();
+      return proto;
+
+    case Type::ArrayRemove:
+      proto.which_transform_type =
+          google_firestore_v1_DocumentTransform_FieldTransform_remove_all_from_array_tag;  // NOLINT
+      // TODO(mrschmidt): Figure out how to remove this copy
+      proto.remove_all_from_array =
+          *DeepClone(
+               ArrayTransform(field_transform.transformation()).elements())
+               .release();
+      return proto;
+
+    case Type::Increment: {
+      proto.which_transform_type =
+          google_firestore_v1_DocumentTransform_FieldTransform_increment_tag;
+      const auto& increment = static_cast<const NumericIncrementTransform&>(
+          field_transform.transformation());
+      proto.increment = increment.operand();
+      return proto;
+    }
+  }
+
+  UNREACHABLE();
+}
+
+FieldTransform Serializer::DecodeFieldTransform(
+    ReadContext* context,
+    google_firestore_v1_DocumentTransform_FieldTransform& proto) const {
+  FieldPath field = DecodeFieldPath(context, proto.field_path);
+
+  switch (proto.which_transform_type) {
+    case google_firestore_v1_DocumentTransform_FieldTransform_set_to_server_value_tag: {  // NOLINT
+      HARD_ASSERT(
+          proto.set_to_server_value ==
+              google_firestore_v1_DocumentTransform_FieldTransform_ServerValue_REQUEST_TIME,  // NOLINT
+          "Unknown transform setToServerValue: %s", proto.set_to_server_value);
+
+      return FieldTransform(std::move(field), ServerTimestampTransform());
+    }
+
+    case google_firestore_v1_DocumentTransform_FieldTransform_append_missing_elements_tag: {  // NOLINT
+      FieldTransform field_transform(
+          std::move(field),
+          ArrayTransform(TransformOperation::Type::ArrayUnion,
+                         MakeMessage(proto.append_missing_elements)));
+      // Release field ownership to prevent double-freeing. The values are now
+      // owned by the FieldTransform.
+      proto.append_missing_elements = {};
+      return field_transform;
+    }
+
+    case google_firestore_v1_DocumentTransform_FieldTransform_remove_all_from_array_tag: {  // NOLINT
+      FieldTransform field_transform(
+          std::move(field),
+          ArrayTransform(TransformOperation::Type::ArrayRemove,
+                         MakeMessage(proto.remove_all_from_array)));
+      // Release field ownership to prevent double-freeing. The values are now
+      // owned by the FieldTransform.
+      proto.append_missing_elements = {};
+      return field_transform;
+    }
+
+    case google_firestore_v1_DocumentTransform_FieldTransform_increment_tag: {
+      return FieldTransform(
+          std::move(field),
+          NumericIncrementTransform(MakeMessage(proto.increment)));
+    }
+  }
+
+  UNREACHABLE();
+}
+
+google_firestore_v1_Target Serializer::EncodeTarget(
+    const TargetData& target_data) const {
+  google_firestore_v1_Target result{};
+  const Target& target = target_data.target();
+
+  if (target.IsDocumentQuery()) {
+    result.which_target_type = google_firestore_v1_Target_documents_tag;
+    result.target_type.documents = EncodeDocumentsTarget(target);
+  } else {
+    result.which_target_type = google_firestore_v1_Target_query_tag;
+    result.target_type.query = EncodeQueryTarget(target);
+  }
+
+  result.target_id = target_data.target_id();
+  if (!target_data.resume_token().empty()) {
+    result.which_resume_type = google_firestore_v1_Target_resume_token_tag;
+    result.resume_type.resume_token =
+        nanopb::CopyBytesArray(target_data.resume_token().get());
+  }
+
+  return result;
+}
+
+google_firestore_v1_Target_DocumentsTarget Serializer::EncodeDocumentsTarget(
+    const core::Target& target) const {
+  google_firestore_v1_Target_DocumentsTarget result{};
+
+  result.documents_count = 1;
+  result.documents = MakeArray<pb_bytes_array_t*>(result.documents_count);
+  result.documents[0] = EncodeQueryPath(target.path());
+
+  return result;
+}
+
+Target Serializer::DecodeDocumentsTarget(
+    ReadContext* context,
+    const google_firestore_v1_Target_DocumentsTarget& proto) const {
+  if (proto.documents_count != 1) {
+    context->Fail(
+        StringFormat("DocumentsTarget contained other than 1 document %s",
+                     proto.documents_count));
+    return {};
+  }
+
+  ResourcePath path =
+      DecodeQueryPath(context, DecodeString(proto.documents[0]));
+  return Query(std::move(path)).ToTarget();
+}
+
+google_firestore_v1_Target_QueryTarget Serializer::EncodeQueryTarget(
+    const core::Target& target) const {
+  google_firestore_v1_Target_QueryTarget result{};
+  result.which_query_type =
+      google_firestore_v1_Target_QueryTarget_structured_query_tag;
+
+  pb_size_t from_count = 1;
+  result.structured_query.from_count = from_count;
+  result.structured_query.from =
+      MakeArray<google_firestore_v1_StructuredQuery_CollectionSelector>(
+          from_count);
+  google_firestore_v1_StructuredQuery_CollectionSelector& from =
+      result.structured_query.from[0];
+
+  // Dissect the path into parent, collection_id and optional key filter.
+  const ResourcePath& path = target.path();
+  if (target.collection_group()) {
+    HARD_ASSERT(
+        path.size() % 2 == 0,
+        "Collection group queries should be within a document path or root.");
+    result.parent = EncodeQueryPath(path);
+
+    from.collection_id = EncodeString(*target.collection_group());
+    from.all_descendants = true;
+
+  } else {
+    HARD_ASSERT(path.size() % 2 != 0,
+                "Document queries with filters are not supported.");
+    result.parent = EncodeQueryPath(path.PopLast());
+    from.collection_id = EncodeString(path.last_segment());
+  }
+
+  // Encode the filters.
+  const auto& filters = target.filters();
+  if (!filters.empty()) {
+    result.structured_query.where = EncodeFilters(filters);
+  }
+
+  const auto& orders = target.order_bys();
+  if (!orders.empty()) {
+    result.structured_query.order_by_count = CheckedSize(orders.size());
+    result.structured_query.order_by = EncodeOrderBys(orders);
+  }
+
+  if (target.limit() != Target::kNoLimit) {
+    result.structured_query.has_limit = true;
+    result.structured_query.limit.value = target.limit();
+  }
+
+  if (target.start_at()) {
+    result.structured_query.start_at = EncodeBound(*target.start_at());
+  }
+
+  if (target.end_at()) {
+    result.structured_query.end_at = EncodeBound(*target.end_at());
+  }
+
+  return result;
+}
+
+Target Serializer::DecodeStructuredQuery(
+    ReadContext* context,
+    pb_bytes_array_t* parent,
+    google_firestore_v1_StructuredQuery& query) const {
+  ResourcePath path = DecodeQueryPath(context, DecodeString(parent));
+
+  CollectionGroupId collection_group;
+  size_t from_count = query.from_count;
+  if (from_count > 0) {
+    if (from_count != 1) {
+      context->Fail(
+          "StructuredQuery.from with more than one collection is not "
+          "supported.");
+      return {};
+    }
+
+    google_firestore_v1_StructuredQuery_CollectionSelector& from =
+        query.from[0];
+    auto collection_id = DecodeString(from.collection_id);
+    if (from.all_descendants) {
+      collection_group = std::make_shared<const std::string>(collection_id);
+    } else {
+      path = path.Append(collection_id);
+    }
+  }
+
+  FilterList filter_by;
+  if (query.where.which_filter_type != 0) {
+    filter_by = DecodeFilters(context, query.where);
+  }
+
+  OrderByList order_by;
+  if (query.order_by_count > 0) {
+    order_by = DecodeOrderBys(context, query.order_by, query.order_by_count);
+  }
+
+  int32_t limit = Target::kNoLimit;
+  if (query.has_limit) {
+    limit = query.limit.value;
+  }
+
+  absl::optional<Bound> start_at;
+  if (query.start_at.values_count > 0) {
+    start_at = DecodeBound(query.start_at);
+  }
+
+  absl::optional<Bound> end_at;
+  if (query.end_at.values_count > 0) {
+    end_at = DecodeBound(query.end_at);
+  }
+
+  return Target(std::move(path), std::move(collection_group),
+                std::move(filter_by), std::move(order_by), limit,
+                std::move(start_at), std::move(end_at));
+}
+
+Target Serializer::DecodeQueryTarget(
+    ReadContext* context, google_firestore_v1_Target_QueryTarget& query) const {
+  // The QueryTarget oneof only has a single valid value.
+  if (query.which_query_type !=
+      google_firestore_v1_Target_QueryTarget_structured_query_tag) {
+    context->Fail(
+        StringFormat("Unknown query_type: %s", query.which_query_type));
+    return {};
+  }
+
+  return DecodeStructuredQuery(context, query.parent, query.structured_query);
+}
+
+google_firestore_v1_StructuredQuery_Filter Serializer::EncodeFilters(
+    const FilterList& filters) const {
+  google_firestore_v1_StructuredQuery_Filter result{};
+
+  auto is_field_filter = [](const Filter& f) { return f.IsAFieldFilter(); };
+  size_t filters_count = absl::c_count_if(filters, is_field_filter);
+  if (filters_count == 1) {
+    auto first = absl::c_find_if(filters, is_field_filter);
+    // Special case: no existing filters and we only need to add one filter.
+    // This can be made the single root filter without a composite filter.
+    FieldFilter filter{*first};
+    return EncodeSingularFilter(filter);
+  }
+
+  result.which_filter_type =
+      google_firestore_v1_StructuredQuery_Filter_composite_filter_tag;
+  google_firestore_v1_StructuredQuery_CompositeFilter& composite =
+      result.composite_filter;
+  composite.op =
+      google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND;
+
+  SetRepeatedField(
+      &composite.filters, &composite.filters_count, filters,
+      [&](const Filter& f) { return EncodeSingularFilter(FieldFilter{f}); });
+
+  return result;
+}
+
+FilterList Serializer::DecodeFilters(
+    ReadContext* context,
+    google_firestore_v1_StructuredQuery_Filter& proto) const {
+  FilterList result;
+
+  switch (proto.which_filter_type) {
+    case google_firestore_v1_StructuredQuery_Filter_composite_filter_tag:
+      return DecodeCompositeFilter(context, proto.composite_filter);
+
+    case google_firestore_v1_StructuredQuery_Filter_unary_filter_tag:
+      return result.push_back(DecodeUnaryFilter(context, proto.unary_filter));
+
+    case google_firestore_v1_StructuredQuery_Filter_field_filter_tag:
+      return result.push_back(DecodeFieldFilter(context, proto.field_filter));
+
+    default:
+      context->Fail(StringFormat("Unrecognized Filter.which_filter_type %s",
+                                 proto.which_filter_type));
+      return result;
+  }
+}
+
+google_firestore_v1_StructuredQuery_Filter Serializer::EncodeSingularFilter(
+    const FieldFilter& filter) const {
+  google_firestore_v1_StructuredQuery_Filter result{};
+
+  bool is_unary = (filter.op() == Filter::Operator::Equal ||
+                   filter.op() == Filter::Operator::NotEqual) &&
+                  (IsNaNValue(filter.value()) || IsNullValue(filter.value()));
+  if (is_unary) {
+    result.which_filter_type =
+        google_firestore_v1_StructuredQuery_Filter_unary_filter_tag;
+    result.unary_filter.which_operand_type =
+        google_firestore_v1_StructuredQuery_UnaryFilter_field_tag;
+    result.unary_filter.field.field_path = EncodeFieldPath(filter.field());
+
+    bool is_equality = filter.op() == Filter::Operator::Equal;
+    if (IsNaNValue(filter.value())) {
+      result.unary_filter.op =
+          is_equality
+              ? google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NAN
+              : google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NAN;  // NOLINT
+
+    } else if (IsNullValue(filter.value())) {
+      result.unary_filter.op =
+          is_equality
+              ? google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NULL
+              : google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL;  // NOLINT
+
+    } else {
+      HARD_FAIL("Expected a unary filter");
+    }
+
+    return result;
+  }
+
+  result.which_filter_type =
+      google_firestore_v1_StructuredQuery_Filter_field_filter_tag;
+
+  result.field_filter.field.field_path = EncodeFieldPath(filter.field());
+  result.field_filter.op = EncodeFieldFilterOperator(filter.op());
+  // TODO(mrschmidt): Figure out how to remove this copy
+  result.field_filter.value = *DeepClone(filter.value()).release();
+
+  return result;
+}
+
+Filter Serializer::DecodeFieldFilter(
+    ReadContext* context,
+    google_firestore_v1_StructuredQuery_FieldFilter& field_filter) const {
+  FieldPath field_path =
+      DecodeFieldPath(context, field_filter.field.field_path);
+  Filter::Operator op = DecodeFieldFilterOperator(context, field_filter.op);
+  Filter result = FieldFilter::Create(std::move(field_path), op,
+                                      MakeSharedMessage(field_filter.value));
+  field_filter.value = {};  // Release field ownership
+  return result;
+}
+
+Filter Serializer::DecodeUnaryFilter(
+    ReadContext* context,
+    const google_firestore_v1_StructuredQuery_UnaryFilter& unary) const {
+  HARD_ASSERT(unary.which_operand_type ==
+                  google_firestore_v1_StructuredQuery_UnaryFilter_field_tag,
+              "Unexpected UnaryFilter.which_operand_type: %s",
+              unary.which_operand_type);
+
+  FieldPath field = DecodeFieldPath(context, unary.field.field_path);
+
+  switch (unary.op) {
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NULL:
+      return FieldFilter::Create(field, Filter::Operator::Equal, NullValue());
+
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NAN:
+      return FieldFilter::Create(field, Filter::Operator::Equal, NaNValue());
+
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NULL:
+      return FieldFilter::Create(field, Filter::Operator::NotEqual,
+                                 NullValue());
+
+    case google_firestore_v1_StructuredQuery_UnaryFilter_Operator_IS_NOT_NAN:
+      return FieldFilter::Create(field, Filter::Operator::NotEqual, NaNValue());
+
+    default:
+      context->Fail(StringFormat("Unrecognized UnaryFilter.op %s", unary.op));
+      return InvalidFilter();
+  }
+}
+
+FilterList Serializer::DecodeCompositeFilter(
+    ReadContext* context,
+    const google_firestore_v1_StructuredQuery_CompositeFilter& composite)
+    const {
+  if (composite.op !=
+      google_firestore_v1_StructuredQuery_CompositeFilter_Operator_AND) {
+    context->Fail(StringFormat(
+        "Only AND-type composite filters are supported, got %s", composite.op));
+    return FilterList{};
+  }
+
+  FilterList result;
+  result = result.reserve(composite.filters_count);
+
+  for (pb_size_t i = 0; i != composite.filters_count; ++i) {
+    auto& filter = composite.filters[i];
+    switch (filter.which_filter_type) {
+      case google_firestore_v1_StructuredQuery_Filter_composite_filter_tag:
+        context->Fail("Nested composite filters are not supported");
+        return FilterList{};
+
+      case google_firestore_v1_StructuredQuery_Filter_unary_filter_tag:
+        result =
+            result.push_back(DecodeUnaryFilter(context, filter.unary_filter));
+        break;
+
+      case google_firestore_v1_StructuredQuery_Filter_field_filter_tag:
+        result =
+            result.push_back(DecodeFieldFilter(context, filter.field_filter));
+        break;
+
+      default:
+        context->Fail(StringFormat("Unrecognized Filter.which_filter_type %s",
+                                   filter.which_filter_type));
+        return FilterList{};
+    }
+  }
+
+  return result;
+}
+
+google_firestore_v1_StructuredQuery_FieldFilter_Operator
+Serializer::EncodeFieldFilterOperator(Filter::Operator op) const {
+  switch (op) {
+    case Filter::Operator::LessThan:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN;
+
+    case Filter::Operator::LessThanOrEqual:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN_OR_EQUAL;  // NOLINT
+
+    case Filter::Operator::GreaterThan:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN;  // NOLINT
+
+    case Filter::Operator::GreaterThanOrEqual:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN_OR_EQUAL;  // NOLINT
+
+    case Filter::Operator::Equal:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_EQUAL;
+
+    case Filter::Operator::NotEqual:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_EQUAL;
+
+    case Filter::Operator::ArrayContains:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS;  // NOLINT
+
+    case Filter::Operator::In:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_IN;
+
+    case Filter::Operator::ArrayContainsAny:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS_ANY;  // NOLINT
+
+    case Filter::Operator::NotIn:
+      return google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN;  // NOLINT
+
+    default:
+      HARD_FAIL("Unhandled Filter::Operator: %s", op);
+  }
+}
+
+Filter::Operator Serializer::DecodeFieldFilterOperator(
+    ReadContext* context,
+    google_firestore_v1_StructuredQuery_FieldFilter_Operator op) const {
+  switch (op) {
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN:
+      return Filter::Operator::LessThan;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_LESS_THAN_OR_EQUAL:  // NOLINT
+      return Filter::Operator::LessThanOrEqual;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN:
+      return Filter::Operator::GreaterThan;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_GREATER_THAN_OR_EQUAL:  // NOLINT
+      return Filter::Operator::GreaterThanOrEqual;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_EQUAL:
+      return Filter::Operator::Equal;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_EQUAL:
+      return Filter::Operator::NotEqual;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS:  // NOLINT
+      return Filter::Operator::ArrayContains;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_IN:
+      return Filter::Operator::In;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_ARRAY_CONTAINS_ANY:  // NOLINT
+      return Filter::Operator::ArrayContainsAny;
+
+    case google_firestore_v1_StructuredQuery_FieldFilter_Operator_NOT_IN:  // NOLINT
+      return Filter::Operator::NotIn;
+
+    default:
+      context->Fail(StringFormat("Unhandled FieldFilter.op: %s", op));
+      return Filter::Operator{};
+  }
+}
+
+google_firestore_v1_StructuredQuery_Order* Serializer::EncodeOrderBys(
+    const OrderByList& orders) const {
+  auto* result = MakeArray<google_firestore_v1_StructuredQuery_Order>(
+      CheckedSize(orders.size()));
+
+  int i = 0;
+  for (const OrderBy& order : orders) {
+    auto& encoded_order = result[i];
+
+    encoded_order.field.field_path = EncodeFieldPath(order.field());
+    auto dir = order.ascending()
+                   ? google_firestore_v1_StructuredQuery_Direction_ASCENDING
+                   : google_firestore_v1_StructuredQuery_Direction_DESCENDING;
+    encoded_order.direction = dir;
+
+    ++i;
+  }
+
+  return result;
+}
+
+OrderByList Serializer::DecodeOrderBys(
+    ReadContext* context,
+    google_firestore_v1_StructuredQuery_Order* order_bys,
+    pb_size_t size) const {
+  OrderByList result;
+  result = result.reserve(size);
+
+  for (pb_size_t i = 0; i != size; ++i) {
+    result = result.push_back(DecodeOrderBy(context, order_bys[i]));
+  }
+
+  return result;
+}
+
+OrderBy Serializer::DecodeOrderBy(
+    ReadContext* context,
+    const google_firestore_v1_StructuredQuery_Order& order_by) const {
+  auto field_path = DecodeFieldPath(context, order_by.field.field_path);
+
+  Direction direction;
+  switch (order_by.direction) {
+    case google_firestore_v1_StructuredQuery_Direction_ASCENDING:
+      direction = Direction::Ascending;
+      break;
+
+    case google_firestore_v1_StructuredQuery_Direction_DESCENDING:
+      direction = Direction::Descending;
+      break;
+
+    default:
+      context->Fail(StringFormat(
+          "Unrecognized google_firestore_v1_StructuredQuery_Direction %s",
+          order_by.direction));
+      return OrderBy{};
+  }
+
+  return OrderBy(std::move(field_path), direction);
+}
+
+google_firestore_v1_Cursor Serializer::EncodeBound(const Bound& bound) const {
+  google_firestore_v1_Cursor result{};
+  result.before = bound.before();
+  SetRepeatedField(
+      &result.values, &result.values_count,
+      absl::Span<google_firestore_v1_Value>(bound.position()->values,
+                                            bound.position()->values_count),
+      [](const google_firestore_v1_Value& value) {
+        return *DeepClone(value).release();
+      });
+  return result;
+}
+
+Bound Serializer::DecodeBound(google_firestore_v1_Cursor& cursor) const {
+  SharedMessage<google_firestore_v1_ArrayValue> index_components{{}};
+  SetRepeatedField(&index_components->values, &index_components->values_count,
+                   absl::Span<google_firestore_v1_Value>(cursor.values,
+                                                         cursor.values_count));
+  // Prevent double-freeing of the cursors's fields. The fields are now owned by
+  // the bound.
+  ReleaseFieldOwnership(cursor.values, cursor.values_count);
+  return Bound::FromValue(std::move(index_components), cursor.before);
+}
+
+/* static */
+pb_bytes_array_t* Serializer::EncodeFieldPath(const FieldPath& field_path) {
+  return EncodeString(field_path.CanonicalString());
+}
+
+/* static */
+FieldPath Serializer::DecodeFieldPath(ReadContext* context,
+                                      const pb_bytes_array_t* field_path) {
+  absl::string_view str = MakeStringView(field_path);
+  StatusOr<FieldPath> decoded_path = FieldPath::FromServerFormatView(str);
+  if (!decoded_path.ok()) {
+    context->set_status(decoded_path.status());
+    return InvalidFieldPath();
+  }
+  return decoded_path.ConsumeValueOrDie();
+}
+
+google_protobuf_Timestamp Serializer::EncodeVersion(
+    const SnapshotVersion& version) {
+  return EncodeTimestamp(version.timestamp());
+}
+
+google_protobuf_Timestamp Serializer::EncodeTimestamp(
+    const Timestamp& timestamp_value) {
+  google_protobuf_Timestamp result{};
+  result.seconds = timestamp_value.seconds();
+  result.nanos = timestamp_value.nanoseconds();
+  return result;
+}
+
+SnapshotVersion Serializer::DecodeVersion(
+    ReadContext* context, const google_protobuf_Timestamp& proto) {
+  return SnapshotVersion{DecodeTimestamp(context, proto)};
+}
+
+Timestamp Serializer::DecodeTimestamp(
+    ReadContext* context, const google_protobuf_Timestamp& timestamp_proto) {
+  auto decoded = TimestampInternal::FromUntrustedSecondsAndNanos(
+      timestamp_proto.seconds, timestamp_proto.nanos);
+
+  if (!decoded.ok()) {
+    context->Fail(
+        "Failed to decode into valid protobuf Timestamp with error '%s'",
+        decoded.status().error_message());
+    return {};
+  }
+  return decoded.ConsumeValueOrDie();
+}
+
+MutationResult Serializer::DecodeMutationResult(
+    ReadContext* context,
+    google_firestore_v1_WriteResult& write_result,
+    const SnapshotVersion& commit_version) const {
+  // NOTE: Deletes don't have an update_time, use commit_version instead.
+  SnapshotVersion version =
+      write_result.has_update_time
+          ? DecodeVersion(context, write_result.update_time)
+          : commit_version;
+
+  Message<google_firestore_v1_ArrayValue> transform_results;
+  SetRepeatedField(&transform_results->values, &transform_results->values_count,
+                   absl::Span<google_firestore_v1_Value>(
+                       write_result.transform_results,
+                       write_result.transform_results_count));
+  // Prevent double-freeing of the transform result. The fields are now owned by
+  // the mutation result.
+  ReleaseFieldOwnership(write_result.transform_results,
+                        write_result.transform_results_count);
+  return MutationResult(version, std::move(transform_results));
+}
+
+std::vector<google_firestore_v1_ListenRequest_LabelsEntry>
+Serializer::EncodeListenRequestLabels(const TargetData& target_data) const {
+  std::vector<google_firestore_v1_ListenRequest_LabelsEntry> result;
+  auto value = EncodeLabel(target_data.purpose());
+  if (value.empty()) {
+    return result;
+  }
+
+  result.push_back({/* key */ EncodeString("goog-listen-tags"),
+                    /* value */ EncodeString(value)});
+
+  return result;
+}
+
+std::string Serializer::EncodeLabel(QueryPurpose purpose) const {
+  switch (purpose) {
+    case QueryPurpose::Listen:
+      return "";
+    case QueryPurpose::ExistenceFilterMismatch:
+      return "existence-filter-mismatch";
+    case QueryPurpose::LimboResolution:
+      return "limbo-document";
+  }
+  UNREACHABLE();
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeWatchChange(
+    ReadContext* context,
+    google_firestore_v1_ListenResponse& watch_change) const {
+  switch (watch_change.which_response_type) {
+    case google_firestore_v1_ListenResponse_target_change_tag:
+      return DecodeTargetChange(context, watch_change.target_change);
+
+    case google_firestore_v1_ListenResponse_document_change_tag:
+      return DecodeDocumentChange(context, watch_change.document_change);
+
+    case google_firestore_v1_ListenResponse_document_delete_tag:
+      return DecodeDocumentDelete(context, watch_change.document_delete);
+
+    case google_firestore_v1_ListenResponse_document_remove_tag:
+      return DecodeDocumentRemove(context, watch_change.document_remove);
+
+    case google_firestore_v1_ListenResponse_filter_tag:
+      return DecodeExistenceFilterWatchChange(context, watch_change.filter);
+  }
+
+  // Occasionally Watch will send response_type == 0 (which isn't a valid tag in
+  // the enumeration). This has only been observed in tests running against the
+  // emulator on Forge. Failing here causes the stream to restart with no ill
+  // effects.
+  context->Fail(StringFormat("Unknown WatchChange.response_type: %s",
+                             watch_change.which_response_type));
+  return {};
+}
+
+SnapshotVersion Serializer::DecodeVersionFromListenResponse(
+    ReadContext* context,
+    const google_firestore_v1_ListenResponse& listen_response) const {
+  // We have only reached a consistent snapshot for the entire stream if there
+  // is a read_time set and it applies to all targets (i.e. the list of targets
+  // is empty). The backend is guaranteed to send such responses.
+  if (listen_response.which_response_type !=
+      google_firestore_v1_ListenResponse_target_change_tag) {
+    return SnapshotVersion::None();
+  }
+  if (listen_response.target_change.target_ids_count != 0) {
+    return SnapshotVersion::None();
+  }
+
+  return DecodeVersion(context, listen_response.target_change.read_time);
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeTargetChange(
+    ReadContext* context,
+    const google_firestore_v1_TargetChange& change) const {
+  WatchTargetChangeState state =
+      DecodeTargetChangeState(context, change.target_change_type);
+  std::vector<TargetId> target_ids(change.target_ids,
+                                   change.target_ids + change.target_ids_count);
+  ByteString resume_token(change.resume_token);
+
+  util::Status cause;
+  if (change.has_cause) {
+    cause = util::Status{static_cast<Error>(change.cause.code),
+                         DecodeString(change.cause.message)};
+  }
+
+  return absl::make_unique<WatchTargetChange>(
+      state, std::move(target_ids), std::move(resume_token), std::move(cause));
+}
+
+WatchTargetChangeState Serializer::DecodeTargetChangeState(
+    ReadContext*,
+    const google_firestore_v1_TargetChange_TargetChangeType state) {
+  switch (state) {
+    case google_firestore_v1_TargetChange_TargetChangeType_NO_CHANGE:
+      return WatchTargetChangeState::NoChange;
+    case google_firestore_v1_TargetChange_TargetChangeType_ADD:
+      return WatchTargetChangeState::Added;
+    case google_firestore_v1_TargetChange_TargetChangeType_REMOVE:
+      return WatchTargetChangeState::Removed;
+    case google_firestore_v1_TargetChange_TargetChangeType_CURRENT:
+      return WatchTargetChangeState::Current;
+    case google_firestore_v1_TargetChange_TargetChangeType_RESET:
+      return WatchTargetChangeState::Reset;
+  }
+  UNREACHABLE();
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeDocumentChange(
+    ReadContext* context, google_firestore_v1_DocumentChange& change) const {
+  ObjectValue value = ObjectValue::FromFieldsEntry(
+      change.document.fields, change.document.fields_count);
+  DocumentKey key = DecodeKey(context, change.document.name);
+
+  HARD_ASSERT(change.document.has_update_time,
+              "Got a document change with no snapshot version");
+  SnapshotVersion version = DecodeVersion(context, change.document.update_time);
+
+  // TODO(b/142956770): other platforms memoize `change.document` inside the
+  // `Document`. This currently cannot be implemented efficiently because it
+  // would require a reference-counted ownership model for the proto (copying it
+  // would defeat the purpose). Note, however, that even without this
+  // optimization C++ implementation is on par with the preceding Objective-C
+  // implementation.
+  MutableDocument document =
+      MutableDocument::FoundDocument(key, version, std::move(value));
+
+  std::vector<TargetId> updated_target_ids(
+      change.target_ids, change.target_ids + change.target_ids_count);
+  std::vector<TargetId> removed_target_ids(
+      change.removed_target_ids,
+      change.removed_target_ids + change.removed_target_ids_count);
+
+  return absl::make_unique<DocumentWatchChange>(
+      std::move(updated_target_ids), std::move(removed_target_ids),
+      std::move(key), std::move(document));
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeDocumentDelete(
+    ReadContext* context,
+    const google_firestore_v1_DocumentDelete& change) const {
+  DocumentKey key = DecodeKey(context, change.document);
+  // Note that version might be unset in which case we use
+  // SnapshotVersion::None().
+  SnapshotVersion version = change.has_read_time
+                                ? DecodeVersion(context, change.read_time)
+                                : SnapshotVersion::None();
+  MutableDocument document = MutableDocument::NoDocument(key, version);
+
+  std::vector<TargetId> removed_target_ids(
+      change.removed_target_ids,
+      change.removed_target_ids + change.removed_target_ids_count);
+
+  return absl::make_unique<DocumentWatchChange>(
+      std::vector<TargetId>{}, std::move(removed_target_ids), std::move(key),
+      std::move(document));
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeDocumentRemove(
+    ReadContext* context,
+    const google_firestore_v1_DocumentRemove& change) const {
+  DocumentKey key = DecodeKey(context, change.document);
+  std::vector<TargetId> removed_target_ids(
+      change.removed_target_ids,
+      change.removed_target_ids + change.removed_target_ids_count);
+
+  return absl::make_unique<DocumentWatchChange>(std::vector<TargetId>{},
+                                                std::move(removed_target_ids),
+                                                std::move(key), absl::nullopt);
+}
+
+std::unique_ptr<WatchChange> Serializer::DecodeExistenceFilterWatchChange(
+    ReadContext*, const google_firestore_v1_ExistenceFilter& filter) const {
+  ExistenceFilter existence_filter{filter.count};
+  return absl::make_unique<ExistenceFilterWatchChange>(existence_filter,
+                                                       filter.target_id);
+}
+
+bool Serializer::IsLocalResourceName(const ResourcePath& path) const {
+  return IsValidResourceName(path) && path[1] == database_id_.project_id() &&
+         path[3] == database_id_.database_id();
+}
+
+bool Serializer::IsLocalDocumentKey(absl::string_view path) const {
+  auto resource = ResourcePath::FromStringView(path);
+  return IsLocalResourceName(resource) &&
+         DocumentKey::IsDocumentKey(resource.PopFirst(5));
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.h
new file mode 100644
index 0000000..5dd7350
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/serializer.h	
@@ -0,0 +1,329 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_SERIALIZER_H_
+#define FIRESTORE_CORE_SRC_REMOTE_SERIALIZER_H_
+
+#include <stddef.h>
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/Protos/nanopb/google/firestore/v1/document.nanopb.h"
+#include "Firestore/Protos/nanopb/google/firestore/v1/firestore.nanopb.h"
+#include "Firestore/Protos/nanopb/google/type/latlng.nanopb.h"
+#include "Firestore/core/src/core/core_fwd.h"
+#include "Firestore/core/src/core/filter.h"
+#include "Firestore/core/src/model/database_id.h"
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/model/resource_path.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/nanopb/writer.h"
+#include "Firestore/core/src/remote/watch_change.h"
+#include "Firestore/core/src/util/read_context.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/base/attributes.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class LocalSerializer;
+class TargetData;
+
+enum class QueryPurpose;
+}  // namespace local
+
+namespace remote {
+
+core::Target InvalidTarget();
+
+/**
+ * @brief Converts internal model objects to their equivalent protocol buffer
+ * form, and protocol buffer objects to their equivalent bytes.
+ *
+ * Methods starting with "Encode" convert from a model object to a nanopb
+ * protocol buffer, and methods starting with "Decode" convert from a nanopb
+ * protocol buffer to a model object.
+ *
+ * For encoded messages, `nanopb::FreeNanopbMessage()` must be called on the
+ * returned nanopb proto buffer or a memory leak will occur.
+ *
+ * All errors that occur during serialization are fatal.
+ *
+ * All deserialization methods (that can fail) take a nanopb::Reader parameter
+ * whose status will be set to failed upon an error. Callers must check this
+ * before using the returned value via `reader->status()`. A deserialization
+ * method might fail if a protocol buffer is missing a critical field or has a
+ * value we can't interpret. On error, the return value from a deserialization
+ * method is unspecified.
+ */
+class Serializer {
+ public:
+  /**
+   * @param database_id Must remain valid for the lifetime of this Serializer
+   * object.
+   */
+  explicit Serializer(model::DatabaseId database_id);
+
+  /**
+   * Encodes the string to nanopb bytes.
+   *
+   * This method allocates memory; the caller is responsible for freeing it.
+   * Typically, the returned value will be added to a pointer field within a
+   * nanopb proto struct. Calling pb_release() on the resulting struct will
+   * cause all proto fields to be freed.
+   */
+  static pb_bytes_array_t* EncodeString(const std::string& str);
+
+  /**
+   * Decodes the nanopb bytes to a std::string. If the input pointer is null,
+   * then this method will return an empty string.
+   */
+  static std::string DecodeString(const pb_bytes_array_t* str);
+
+  /**
+   * Returns the database ID, such as
+   * `projects/{project_id}/databases/{database_id}`.
+   */
+  pb_bytes_array_t* EncodeDatabaseName() const;
+
+  /**
+   * Encodes the given document key as a fully qualified name. This includes the
+   * DatabaseId associated with this Serializer and the key path.
+   */
+  pb_bytes_array_t* EncodeKey(
+      const firebase::firestore::model::DocumentKey& key) const;
+
+  /**
+   * Decodes the given document key from a fully qualified name.
+   */
+  firebase::firestore::model::DocumentKey DecodeKey(
+      util::ReadContext* context, const pb_bytes_array_t* name) const;
+
+  /**
+   * @brief Converts the Document (i.e. key/value) into bytes.
+   */
+  google_firestore_v1_Document EncodeDocument(
+      const model::DocumentKey& key, const model::ObjectValue& value) const;
+
+  /**
+   * @brief Converts from nanopb proto to the model Document format.
+   */
+  model::MutableDocument DecodeMaybeDocument(
+      util::ReadContext* context,
+      google_firestore_v1_BatchGetDocumentsResponse& response) const;
+
+  google_firestore_v1_Write EncodeMutation(
+      const model::Mutation& mutation) const;
+  model::Mutation DecodeMutation(util::ReadContext* context,
+                                 google_firestore_v1_Write& mutation) const;
+
+  static google_firestore_v1_Precondition EncodePrecondition(
+      const model::Precondition& precondition);
+  static model::Precondition DecodePrecondition(
+      util::ReadContext* context,
+      const google_firestore_v1_Precondition& precondition);
+
+  static google_firestore_v1_DocumentMask EncodeFieldMask(
+      const model::FieldMask& mask);
+  static model::FieldMask DecodeFieldMask(
+      util::ReadContext* context, const google_firestore_v1_DocumentMask& mask);
+
+  google_firestore_v1_DocumentTransform_FieldTransform EncodeFieldTransform(
+      const model::FieldTransform& field_transform) const;
+  model::FieldTransform DecodeFieldTransform(
+      util::ReadContext* context,
+      google_firestore_v1_DocumentTransform_FieldTransform& proto) const;
+
+  model::MutationResult DecodeMutationResult(
+      util::ReadContext* context,
+      google_firestore_v1_WriteResult& write_result,
+      const model::SnapshotVersion& commit_version) const;
+
+  std::vector<google_firestore_v1_ListenRequest_LabelsEntry>
+  EncodeListenRequestLabels(const local::TargetData& target_data) const;
+
+  static pb_bytes_array_t* EncodeFieldPath(const model::FieldPath& field_path);
+  static model::FieldPath DecodeFieldPath(util::ReadContext* context,
+                                          const pb_bytes_array_t* field_path);
+
+  static google_protobuf_Timestamp EncodeVersion(
+      const model::SnapshotVersion& version);
+
+  static google_protobuf_Timestamp EncodeTimestamp(
+      const Timestamp& timestamp_value);
+
+  static model::SnapshotVersion DecodeVersion(
+      util::ReadContext* context, const google_protobuf_Timestamp& proto);
+
+  static Timestamp DecodeTimestamp(
+      util::ReadContext* context,
+      const google_protobuf_Timestamp& timestamp_proto);
+
+  google_firestore_v1_Target EncodeTarget(
+      const local::TargetData& target_data) const;
+  google_firestore_v1_Target_DocumentsTarget EncodeDocumentsTarget(
+      const core::Target& target) const;
+  core::Target DecodeDocumentsTarget(
+      util::ReadContext* context,
+      const google_firestore_v1_Target_DocumentsTarget& proto) const;
+  google_firestore_v1_Target_QueryTarget EncodeQueryTarget(
+      const core::Target& target) const;
+
+  /**
+   * Decodes the query target. Modifies the provided proto to release ownership
+   * of any Value messages.
+   */
+  core::Target DecodeQueryTarget(
+      util::ReadContext* context,
+      google_firestore_v1_Target_QueryTarget& query) const;
+
+  core::Target DecodeStructuredQuery(
+      util::ReadContext* context,
+      pb_bytes_array_t* parent,
+      google_firestore_v1_StructuredQuery& query) const;
+
+  /**
+   * Decodes the watch change. Modifies the provided proto to release
+   * ownership of any Value messages.
+   */
+  std::unique_ptr<remote::WatchChange> DecodeWatchChange(
+      util::ReadContext* context,
+      google_firestore_v1_ListenResponse& watch_change) const;
+
+  model::SnapshotVersion DecodeVersionFromListenResponse(
+      util::ReadContext* context,
+      const google_firestore_v1_ListenResponse& listen_response) const;
+
+  // Public for the sake of tests.
+  google_firestore_v1_StructuredQuery_Filter EncodeFilters(
+      const core::FilterList& filters) const;
+
+  /**
+   * Decodes the structured query. Modifies the provided proto to release
+   * ownership of any Value messages.
+   */
+  core::FilterList DecodeFilters(
+      util::ReadContext* context,
+      google_firestore_v1_StructuredQuery_Filter& proto) const;
+
+  /**
+   * Encodes a database ID and resource path into the following form:
+   * /projects/$project_id/database/$database_id/documents/$path
+   *
+   * Does not verify that the database_id matches the current instance.
+   */
+  pb_bytes_array_t* EncodeResourceName(const model::DatabaseId& database_id,
+                                       const model::ResourcePath& path) const;
+
+  bool IsLocalResourceName(const model::ResourcePath& path) const;
+
+  bool IsLocalDocumentKey(absl::string_view path) const;
+
+ private:
+  model::MutableDocument DecodeFoundDocument(
+      util::ReadContext* context,
+      google_firestore_v1_BatchGetDocumentsResponse& response) const;
+  model::MutableDocument DecodeMissingDocument(
+      util::ReadContext* context,
+      const google_firestore_v1_BatchGetDocumentsResponse& response) const;
+
+  pb_bytes_array_t* EncodeQueryPath(const model::ResourcePath& path) const;
+  model::ResourcePath DecodeQueryPath(util::ReadContext* context,
+                                      absl::string_view name) const;
+
+  /**
+   * Decodes a fully qualified resource name into a resource path and validates
+   * that there is a project and database encoded in the path. There are no
+   * guarantees that a local path is also encoded in this resource name.
+   */
+  model::ResourcePath DecodeResourceName(util::ReadContext* context,
+                                         absl::string_view encoded) const;
+
+  void ValidateDocumentKeyPath(util::ReadContext* context,
+                               const model::ResourcePath& resource_name) const;
+  model::DocumentKey DecodeKey(util::ReadContext* context,
+                               const model::ResourcePath& resource_name) const;
+
+  std::string EncodeLabel(local::QueryPurpose purpose) const;
+
+  google_firestore_v1_StructuredQuery_Filter EncodeSingularFilter(
+      const core::FieldFilter& filter) const;
+  core::Filter DecodeFieldFilter(
+      util::ReadContext* context,
+      google_firestore_v1_StructuredQuery_FieldFilter& field_filter) const;
+  core::Filter DecodeUnaryFilter(
+      util::ReadContext* context,
+      const google_firestore_v1_StructuredQuery_UnaryFilter& unary) const;
+  core::FilterList DecodeCompositeFilter(
+      util::ReadContext* context,
+      const google_firestore_v1_StructuredQuery_CompositeFilter& composite)
+      const;
+
+  google_firestore_v1_StructuredQuery_FieldFilter_Operator
+  EncodeFieldFilterOperator(core::Filter::Operator op) const;
+  core::Filter::Operator DecodeFieldFilterOperator(
+      util::ReadContext* context,
+      google_firestore_v1_StructuredQuery_FieldFilter_Operator op) const;
+
+  google_firestore_v1_StructuredQuery_Order* EncodeOrderBys(
+      const core::OrderByList& orders) const;
+  core::OrderByList DecodeOrderBys(
+      util::ReadContext* context,
+      google_firestore_v1_StructuredQuery_Order* order_bys,
+      pb_size_t size) const;
+  core::OrderBy DecodeOrderBy(
+      util::ReadContext* context,
+      const google_firestore_v1_StructuredQuery_Order& order_by) const;
+
+  google_firestore_v1_Cursor EncodeBound(const core::Bound& bound) const;
+  core::Bound DecodeBound(google_firestore_v1_Cursor& cursor) const;
+
+  std::unique_ptr<remote::WatchChange> DecodeTargetChange(
+      util::ReadContext* context,
+      const google_firestore_v1_TargetChange& change) const;
+  static remote::WatchTargetChangeState DecodeTargetChangeState(
+      util::ReadContext* context,
+      const google_firestore_v1_TargetChange_TargetChangeType state);
+
+  std::unique_ptr<remote::WatchChange> DecodeDocumentChange(
+      util::ReadContext* context,
+      google_firestore_v1_DocumentChange& change) const;
+  std::unique_ptr<remote::WatchChange> DecodeDocumentDelete(
+      util::ReadContext* context,
+      const google_firestore_v1_DocumentDelete& change) const;
+  std::unique_ptr<remote::WatchChange> DecodeDocumentRemove(
+      util::ReadContext* context,
+      const google_firestore_v1_DocumentRemove& change) const;
+  std::unique_ptr<remote::WatchChange> DecodeExistenceFilterWatchChange(
+      util::ReadContext* context,
+      const google_firestore_v1_ExistenceFilter& filter) const;
+
+  model::DatabaseId database_id_;
+  // TODO(varconst): Android caches the result of calling `EncodeDatabaseName`
+  // as well, consider implementing that.
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_SERIALIZER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.cc
new file mode 100644
index 0000000..f171050
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.cc	
@@ -0,0 +1,329 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/stream.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/remote/datastore.h"
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+using auth::CredentialsProvider;
+using auth::Token;
+using util::AsyncQueue;
+using util::LogIsDebugEnabled;
+using util::Status;
+using util::StatusOr;
+using util::StringFormat;
+using util::TimerId;
+
+/**
+ * Initial backoff time after an error.
+ * Set to 1s according to https://cloud.google.com/apis/design/errors.
+ */
+const double kBackoffFactor = 1.5;
+const AsyncQueue::Milliseconds kBackoffInitialDelay{std::chrono::seconds(1)};
+const AsyncQueue::Milliseconds kBackoffMaxDelay{std::chrono::seconds(60)};
+/** The time a stream stays open after it is marked idle. */
+const AsyncQueue::Milliseconds kIdleTimeout{std::chrono::seconds(60)};
+
+}  // namespace
+
+Stream::Stream(const std::shared_ptr<AsyncQueue>& worker_queue,
+               std::shared_ptr<CredentialsProvider> credentials_provider,
+               GrpcConnection* grpc_connection,
+               TimerId backoff_timer_id,
+               TimerId idle_timer_id)
+    : backoff_{worker_queue, backoff_timer_id, kBackoffFactor,
+               kBackoffInitialDelay, kBackoffMaxDelay},
+      credentials_provider_{std::move(credentials_provider)},
+      worker_queue_{worker_queue},
+      grpc_connection_{grpc_connection},
+      idle_timer_id_{idle_timer_id} {
+}
+
+// Check state
+
+bool Stream::IsOpen() const {
+  EnsureOnQueue();
+  return state_ == State::Open;
+}
+
+bool Stream::IsStarted() const {
+  EnsureOnQueue();
+  return state_ == State::Starting || state_ == State::Backoff || IsOpen();
+}
+
+// Starting
+
+void Stream::Start() {
+  EnsureOnQueue();
+
+  if (state_ == State::Error) {
+    BackoffAndTryRestarting();
+    return;
+  }
+
+  LOG_DEBUG("%s start", GetDebugDescription());
+
+  HARD_ASSERT(state_ == State::Initial, "Already started");
+  state_ = State::Starting;
+
+  RequestCredentials();
+}
+
+void Stream::RequestCredentials() {
+  EnsureOnQueue();
+
+  // Auth may outlive the stream, so make sure it doesn't try to access a
+  // deleted object.
+  std::weak_ptr<Stream> weak_this{shared_from_this()};
+  int initial_close_count = close_count_;
+  credentials_provider_->GetToken([weak_this, initial_close_count](
+                                      const StatusOr<Token>& maybe_token) {
+    auto strong_this = weak_this.lock();
+    if (!strong_this) {
+      return;
+    }
+
+    strong_this->worker_queue_->EnqueueRelaxed([maybe_token, weak_this,
+                                                initial_close_count] {
+      auto strong_this = weak_this.lock();
+      // Streams can be stopped while waiting for authorization, so need
+      // to check the close count.
+      if (!strong_this || strong_this->close_count_ != initial_close_count) {
+        return;
+      }
+      strong_this->ResumeStartWithCredentials(maybe_token);
+    });
+  });
+}
+
+void Stream::ResumeStartWithCredentials(const StatusOr<Token>& maybe_token) {
+  EnsureOnQueue();
+
+  HARD_ASSERT(state_ == State::Starting,
+              "State should still be 'Starting' (was %s)", state_);
+
+  if (!maybe_token.ok()) {
+    OnStreamFinish(maybe_token.status());
+    return;
+  }
+
+  grpc_stream_ = CreateGrpcStream(grpc_connection_, maybe_token.ValueOrDie());
+  grpc_stream_->Start();
+}
+
+void Stream::OnStreamStart() {
+  EnsureOnQueue();
+
+  state_ = State::Open;
+  NotifyStreamOpen();
+}
+
+// Backoff
+
+void Stream::BackoffAndTryRestarting() {
+  EnsureOnQueue();
+
+  LOG_DEBUG("%s backoff", GetDebugDescription());
+
+  HARD_ASSERT(state_ == State::Error,
+              "Should only perform backoff in an error case");
+
+  state_ = State::Backoff;
+  backoff_.BackoffAndRun([this] {
+    HARD_ASSERT(state_ == State::Backoff,
+                "Backoff elapsed but state is now: %s", state_);
+
+    state_ = State::Initial;
+    Start();
+    HARD_ASSERT(IsStarted(), "Stream should have started.");
+  });
+}
+
+void Stream::InhibitBackoff() {
+  EnsureOnQueue();
+
+  HARD_ASSERT(!IsStarted(),
+              "Can only cancel backoff in a stopped state (was %s)", state_);
+
+  // Clear the error condition.
+  state_ = State::Initial;
+  backoff_.Reset();
+}
+
+// Idleness
+
+void Stream::MarkIdle() {
+  EnsureOnQueue();
+
+  if (IsOpen() && !idleness_timer_) {
+    idleness_timer_ = worker_queue_->EnqueueAfterDelay(
+        kIdleTimeout, idle_timer_id_, [this] { Stop(); });
+  }
+}
+
+void Stream::CancelIdleCheck() {
+  EnsureOnQueue();
+  idleness_timer_.Cancel();
+}
+
+// Read/write
+
+void Stream::OnStreamRead(const grpc::ByteBuffer& message) {
+  EnsureOnQueue();
+
+  HARD_ASSERT(IsStarted(), "OnStreamRead called for a stopped stream.");
+
+  if (LogIsDebugEnabled()) {
+    LOG_DEBUG("%s headers (allowlisted): %s", GetDebugDescription(),
+              Datastore::GetAllowlistedHeadersAsString(
+                  grpc_stream_->GetResponseHeaders()));
+  }
+
+  Status read_status = NotifyStreamResponse(message);
+  if (!read_status.ok()) {
+    grpc_stream_->FinishImmediately();
+    // Don't expect gRPC to produce status -- since the error happened on the
+    // client, we have all the information we need.
+    OnStreamFinish(read_status);
+    return;
+  }
+}
+
+// Stopping
+
+void Stream::Stop() {
+  EnsureOnQueue();
+  LOG_DEBUG("%s stop", GetDebugDescription());
+
+  Close(Status::OK());
+}
+
+void Stream::Close(const Status& status) {
+  // This function ensures that both graceful stop and stop due to error go
+  // through the same sequence of steps. While it leads to more conditional
+  // logic, the benefit is reducing the chance of divergence across the two
+  // cases.
+
+  EnsureOnQueue();
+  bool graceful_stop = status.ok();
+
+  // Step 1 (both): check current state.
+  if (graceful_stop && !IsStarted()) {
+    // Graceful stop is idempotent.
+    return;
+  }
+  HARD_ASSERT(IsStarted(), "Trying to close a non-started stream");
+
+  // Step 2 (both): cancel any outstanding timers (they're guaranteed not to
+  // execute).
+  CancelIdleCheck();
+  backoff_.Cancel();
+
+  // Step 3 (both): increment close count, which invalidates long-lived
+  // callbacks, guaranteeing they won't execute against a new instance of the
+  // stream or when the stream has been destroyed.
+  ++close_count_;
+
+  // Step 4 (both): make small adjustments (to backoff/etc.) based on the
+  // status.
+  if (graceful_stop) {
+    // If this is an intentional close, ensure we don't delay our next
+    // connection attempt.
+    backoff_.Reset();
+  } else {
+    HandleErrorStatus(status);
+  }
+
+  // Step 5 (graceful stop only): give subclasses a chance to send final
+  // messages.
+  if (graceful_stop && grpc_stream_) {
+    // If the stream is in the auth stage, gRPC stream might not have been
+    // created yet.
+    LOG_DEBUG("%s Finishing gRPC stream", GetDebugDescription());
+    TearDown(grpc_stream_.get());
+  }
+  // Step 6 (both): destroy the underlying stream.
+  grpc_stream_.reset();
+
+  // Step 7 (both): update the state machine and notify the listener.
+  // State must be updated before calling the delegate.
+  state_ = graceful_stop ? State::Initial : State::Error;
+  NotifyStreamClose(status);
+}
+
+void Stream::HandleErrorStatus(const Status& status) {
+  if (status.code() == Error::kErrorResourceExhausted) {
+    LOG_DEBUG(
+        "%s Using maximum backoff delay to prevent overloading the backend.",
+        GetDebugDescription());
+    backoff_.ResetToMax();
+  } else if (status.code() == Error::kErrorUnauthenticated) {
+    // "unauthenticated" error means the token was rejected. Try force
+    // refreshing it in case it just expired.
+    credentials_provider_->InvalidateToken();
+  }
+}
+
+void Stream::OnStreamFinish(const Status& status) {
+  EnsureOnQueue();
+
+  if (!status.ok()) {
+    LOG_WARN("%s Stream error: '%s'", GetDebugDescription(), status.ToString());
+  } else {
+    LOG_DEBUG("%s Stream closing: '%s'", GetDebugDescription(),
+              status.ToString());
+  }
+
+  Close(status);
+}
+
+// Protected helpers
+
+void Stream::EnsureOnQueue() const {
+  worker_queue_->VerifyIsCurrentQueue();
+}
+
+void Stream::Write(grpc::ByteBuffer&& message) {
+  EnsureOnQueue();
+
+  HARD_ASSERT(IsOpen(), "Cannot write when the stream is not open.");
+
+  CancelIdleCheck();
+  grpc_stream_->Write(std::move(message));
+}
+
+std::string Stream::GetDebugDescription() const {
+  EnsureOnQueue();
+  return StringFormat("%s (%s)", GetDebugName(), this);
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.h
new file mode 100644
index 0000000..0d1edbb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/stream.h	
@@ -0,0 +1,245 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_STREAM_H_
+#define FIRESTORE_CORE_SRC_REMOTE_STREAM_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/auth/credentials_provider.h"
+#include "Firestore/core/src/auth/token.h"
+#include "Firestore/core/src/remote/exponential_backoff.h"
+#include "Firestore/core/src/remote/grpc_completion.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/grpc_stream.h"
+#include "Firestore/core/src/remote/remote_objc_bridge.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * A `Stream` is an abstract base class that represents a bidirectional
+ * streaming connection to the Firestore backend. It's built on top of gRPC C++
+ * library and adds several critical features for our clients:
+ *
+ *   - Exponential backoff on failure (independent of the gRPC mechanism)
+ *   - Authentication via CredentialsProvider
+ *   - Dispatching all callbacks into the shared Firestore async queue
+ *   - Closing idle streams after 60 seconds of inactivity
+ *
+ * Subclasses of `Stream`:
+ *
+ *   - Implement serialization and deserialization of protocol buffers
+ *   - Notify their delegate about stream open/read/error events
+ *   - Create and finish the underlying gRPC streams.
+ *
+ * ## Starting and Stopping
+ *
+ * Streams are stateful and need to be `Start`ed before messages can
+ * be sent and received. A `Stream` can be started and stopped repeatedly.
+ *
+ * All public virtual methods exist only for the sake of tests; the methods that
+ * are expected to be implemented by "normal" derived classes are pure virtual
+ * and private.
+ */
+class Stream : public GrpcStreamObserver,
+               public std::enable_shared_from_this<Stream> {
+ public:
+  /**
+   * `Stream` can be in one of 5 states (each described in detail below)
+   * shown in the following state transition diagram:
+   *
+   *          Start() called             auth & connection succeeded
+   * INITIAL ----------------> STARTING -----------------------------> OPEN
+   *                             ^  |                                   |
+   *                             |  |                    error occurred |
+   *                             |  \-----------------------------v-----/
+   *                             |                                |
+   *                    backoff  |                                |
+   *                    elapsed  |              Start() called    |
+   *                             \--- BACKOFF <---------------- ERROR
+   *
+   * [any state] --------------------------> INITIAL
+   *               Stop() called or
+   *               idle timer expired
+   */
+  enum class State {
+    /**
+     * The stream is not yet running and there's no error condition.
+     * Calling `Start` will start the stream immediately without backoff.
+     * While in this state, `IsStarted` will return false.
+     */
+    Initial,
+
+    /**
+     * The stream is starting, either waiting for an auth token or for the
+     * stream to successfully open. While in this state, `IsStarted` will
+     * return true but `IsOpen` will return false.
+     */
+    Starting,
+
+    /**
+     * The stream is up and running. Requests and responses can flow
+     * freely. Both `IsStarted` and `IsOpen` will return true.
+     */
+    Open,
+
+    /**
+     * The stream encountered an error. The next start attempt will back off.
+     * While in this state, `IsStarted` will return false.
+     */
+    Error,
+
+    /**
+     * An in-between state after an error where the stream is waiting before
+     * re-starting. After waiting is complete, the stream will try to open.
+     * While in this state, `IsStarted` will return true but `IsOpen` will
+     * return false.
+     */
+    Backoff
+  };
+
+  Stream(const std::shared_ptr<util::AsyncQueue>& worker_queue,
+         std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+         GrpcConnection* grpc_connection,
+         util::TimerId backoff_timer_id,
+         util::TimerId idle_timer_id);
+
+  /**
+   * Starts the stream. Only allowed if `IsStarted` returns false. The stream is
+   * not immediately ready for use: `OnStreamStart` will be invoked when the
+   * stream is ready for outbound requests, at which point `IsOpen` will return
+   * true.
+   *
+   * When start returns, `IsStarted` will return true.
+   */
+  virtual void Start();
+
+  /**
+   * Stops the stream. This call is idempotent and allowed regardless of the
+   * current `IsStarted` state.
+   *
+   * When stop returns, `IsStarted` and `IsOpen` will both return false.
+   */
+  virtual void Stop();
+
+  /**
+   * Returns true if `Start` has been called and no error has occurred. True
+   * indicates the stream is open or in the process of opening (which
+   * encompasses respecting backoff, getting auth tokens, and starting the
+   * actual stream). Use `IsOpen` to determine if the stream is open and ready
+   * for outbound requests.
+   */
+  virtual bool IsStarted() const;
+
+  /**
+   * Returns true if the underlying stream is open (`OnStreamStart` has been
+   * called) and the stream is ready for outbound requests.
+   */
+  virtual bool IsOpen() const;
+
+  /**
+   * After an error, the stream will usually back off on the next attempt to
+   * start it. If the error warrants an immediate restart of the stream, the
+   * caller can use this to indicate that the stream should not back off.
+   *
+   * Each error will call `OnStreamClose`. That function can decide to
+   * cancel backoff if required.
+   */
+  void InhibitBackoff();
+
+  /**
+   * Marks this stream as idle. If no further actions are performed on the
+   * stream for one minute, the stream will automatically close itself and
+   * notify the stream's `OnClose` handler with Status::OK. The stream will then
+   * be in a non-started state, requiring the caller to start the stream again
+   * before further use.
+   *
+   * Only streams that are in state 'Open' can be marked idle, as all other
+   * states imply pending network operations.
+   */
+  void MarkIdle();
+
+  /**
+   * Marks the stream as active again, preventing auto-closing of the stream.
+   * Can be called from any state -- if the stream is not in state `Open`, this
+   * is a no-op.
+   */
+  void CancelIdleCheck();
+
+  // `GrpcStreamObserver` interface -- do not use.
+  void OnStreamStart() override;
+  void OnStreamRead(const grpc::ByteBuffer& message) override;
+  void OnStreamFinish(const util::Status& status) override;
+
+ protected:
+  // `Stream` expects all its methods to be called on the worker queue.
+  void EnsureOnQueue() const;
+  void Write(grpc::ByteBuffer&& message);
+  std::string GetDebugDescription() const;
+
+  ExponentialBackoff backoff_;
+
+ private:
+  // The interface for the derived classes.
+
+  virtual std::unique_ptr<GrpcStream> CreateGrpcStream(
+      GrpcConnection* grpc_connection, const auth::Token& token) = 0;
+  virtual void TearDown(GrpcStream* stream) = 0;
+  virtual void NotifyStreamOpen() = 0;
+  virtual util::Status NotifyStreamResponse(
+      const grpc::ByteBuffer& message) = 0;
+  virtual void NotifyStreamClose(const util::Status& status) = 0;
+  // PORTING NOTE: C++ cannot rely on RTTI, unlike other platforms.
+  virtual std::string GetDebugName() const = 0;
+
+  void Close(const util::Status& status);
+  void HandleErrorStatus(const util::Status& status);
+
+  void RequestCredentials();
+  void ResumeStartWithCredentials(
+      const util::StatusOr<auth::Token>& maybe_token);
+
+  void BackoffAndTryRestarting();
+  void StopDueToIdleness();
+
+  State state_ = State::Initial;
+
+  std::unique_ptr<GrpcStream> grpc_stream_;
+
+  std::shared_ptr<auth::CredentialsProvider> credentials_provider_;
+  std::shared_ptr<util::AsyncQueue> worker_queue_;
+  GrpcConnection* grpc_connection_ = nullptr;
+
+  util::TimerId idle_timer_id_{};
+  util::DelayedOperation idleness_timer_;
+
+  // Used to prevent auth if the stream happens to be restarted before token is
+  // received.
+  int close_count_ = 0;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_STREAM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.cc
new file mode 100644
index 0000000..90438c3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.cc	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/watch_change.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+namespace {
+
+template <typename T>
+bool Equals(const WatchChange& lhs, const WatchChange& rhs) {
+  return static_cast<const T&>(lhs) == static_cast<const T&>(rhs);
+}
+
+}  // namespace
+
+// Compares two `WatchChange`s taking into account their actual derived type.
+bool operator==(const WatchChange& lhs, const WatchChange& rhs) {
+  if (lhs.type() != rhs.type()) {
+    return false;
+  }
+
+  switch (lhs.type()) {
+    case WatchChange::Type::Document:
+      return Equals<DocumentWatchChange>(lhs, rhs);
+    case WatchChange::Type::ExistenceFilter:
+      return Equals<ExistenceFilterWatchChange>(lhs, rhs);
+    case WatchChange::Type::TargetChange:
+      return Equals<WatchTargetChange>(lhs, rhs);
+  }
+  UNREACHABLE();
+}
+
+bool operator==(const DocumentWatchChange& lhs,
+                const DocumentWatchChange& rhs) {
+  return lhs.updated_target_ids() == rhs.updated_target_ids() &&
+         lhs.removed_target_ids() == rhs.removed_target_ids() &&
+         lhs.document_key() == rhs.document_key() &&
+         lhs.new_document() == rhs.new_document();
+}
+
+bool operator==(const ExistenceFilterWatchChange& lhs,
+                const ExistenceFilterWatchChange& rhs) {
+  return lhs.filter() == rhs.filter() && lhs.target_id() == rhs.target_id();
+}
+
+bool operator==(const WatchTargetChange& lhs, const WatchTargetChange& rhs) {
+  return lhs.state() == rhs.state() && lhs.target_ids() == rhs.target_ids() &&
+         lhs.resume_token() == rhs.resume_token() && lhs.cause() == rhs.cause();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.h
new file mode 100644
index 0000000..ba2951c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_change.h	
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_WATCH_CHANGE_H_
+#define FIRESTORE_CORE_SRC_REMOTE_WATCH_CHANGE_H_
+
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/model/document_key.h"
+#include "Firestore/core/src/model/mutable_document.h"
+#include "Firestore/core/src/model/types.h"
+#include "Firestore/core/src/nanopb/byte_string.h"
+#include "Firestore/core/src/remote/existence_filter.h"
+#include "Firestore/core/src/util/status.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+/**
+ * `WatchChange` is the internal representation of the watcher API protocol
+ * buffers. This is an empty abstract class so that all the different kinds of
+ * changes can have a common base class.
+ */
+class WatchChange {
+ public:
+  // PORTING NOTE: `WatchChange` is expected to be downcast, but on C++ we can't
+  // rely on RTTI to be available.
+  enum class Type {
+    Document,
+    ExistenceFilter,
+    TargetChange,
+  };
+
+  virtual ~WatchChange() = default;
+
+  virtual Type type() const = 0;
+};
+
+bool operator==(const WatchChange& lhs, const WatchChange& rhs);
+
+/**
+ * `DocumentWatchChange` represents a changed document and a list of target ids
+ * to which this change applies.
+ *
+ * If document has been deleted, a `DeletedDocument` will be provided.
+ */
+class DocumentWatchChange : public WatchChange {
+ public:
+  DocumentWatchChange(std::vector<model::TargetId> updated_target_ids,
+                      std::vector<model::TargetId> removed_target_ids,
+                      model::DocumentKey document_key,
+                      absl::optional<model::MutableDocument> new_document)
+      : updated_target_ids_{std::move(updated_target_ids)},
+        removed_target_ids_{std::move(removed_target_ids)},
+        document_key_{std::move(document_key)},
+        new_document_{std::move(new_document)} {
+  }
+
+  Type type() const override {
+    return Type::Document;
+  }
+
+  /** The new document applies to all of these targets. */
+  const std::vector<model::TargetId>& updated_target_ids() const {
+    return updated_target_ids_;
+  }
+
+  /** The new document is removed from all of these targets. */
+  const std::vector<model::TargetId>& removed_target_ids() const {
+    return removed_target_ids_;
+  }
+
+  /**
+   * The new document, or `DeletedDocument` if it was deleted. Is null if the
+   * document went out of view without the server sending a new document.
+   */
+  const absl::optional<model::MutableDocument>& new_document() const {
+    return new_document_;
+  }
+
+  /** The key of the document for this change. */
+  const model::DocumentKey& document_key() const {
+    return document_key_;
+  }
+
+ private:
+  std::vector<model::TargetId> updated_target_ids_;
+  std::vector<model::TargetId> removed_target_ids_;
+  model::DocumentKey document_key_;
+  absl::optional<model::MutableDocument> new_document_;
+};
+
+bool operator==(const DocumentWatchChange& lhs, const DocumentWatchChange& rhs);
+
+/**
+ * An `ExistenceFilterWatchChange` applies to the targets and is required to
+ * verify the current client state against expected state sent from the server.
+ */
+class ExistenceFilterWatchChange : public WatchChange {
+ public:
+  ExistenceFilterWatchChange(ExistenceFilter filter, model::TargetId target_id)
+      : filter_{filter}, target_id_{target_id} {
+  }
+
+  Type type() const override {
+    return Type::ExistenceFilter;
+  }
+
+  const ExistenceFilter& filter() const {
+    return filter_;
+  }
+  model::TargetId target_id() const {
+    return target_id_;
+  }
+
+ private:
+  ExistenceFilter filter_;
+  model::TargetId target_id_;
+};
+
+bool operator==(const ExistenceFilterWatchChange& lhs,
+                const ExistenceFilterWatchChange& rhs);
+
+enum class WatchTargetChangeState { NoChange, Added, Removed, Current, Reset };
+
+class WatchTargetChange : public WatchChange {
+ public:
+  WatchTargetChange(WatchTargetChangeState state,
+                    std::vector<model::TargetId> target_ids)
+      : WatchTargetChange{state, std::move(target_ids), nanopb::ByteString(),
+                          util::Status::OK()} {
+  }
+
+  WatchTargetChange(WatchTargetChangeState state,
+                    std::vector<model::TargetId> target_ids,
+                    nanopb::ByteString resume_token)
+      : WatchTargetChange{state, std::move(target_ids), std::move(resume_token),
+                          util::Status::OK()} {
+  }
+
+  WatchTargetChange(WatchTargetChangeState state,
+                    std::vector<model::TargetId> target_ids,
+                    util::Status cause)
+      : WatchTargetChange{state, std::move(target_ids), nanopb::ByteString(),
+                          cause} {
+  }
+
+  WatchTargetChange(WatchTargetChangeState state,
+                    std::vector<model::TargetId> target_ids,
+                    nanopb::ByteString resume_token,
+                    util::Status cause)
+      : state_{state},
+        target_ids_{std::move(target_ids)},
+        resume_token_{std::move(resume_token)},
+        cause_{std::move(cause)} {
+  }
+
+  Type type() const override {
+    return Type::TargetChange;
+  }
+
+  /** What kind of change occurred to the watch target. */
+  WatchTargetChangeState state() const {
+    return state_;
+  }
+
+  /** The target IDs that were added/removed/set. */
+  const std::vector<model::TargetId>& target_ids() const {
+    return target_ids_;
+  }
+
+  /**
+   * An opaque, server-assigned token that allows watching a query to be
+   * resumed after disconnecting without retransmitting all the data that
+   * matches the query. The resume token essentially identifies a point in
+   * time from which the server should resume sending results.
+   */
+  const nanopb::ByteString& resume_token() const {
+    return resume_token_;
+  }
+
+  /**
+   * An RPC error indicating why the watch failed. Only valid if
+   * WatchChangeState == Removed.
+   */
+  const util::Status& cause() const {
+    return cause_;
+  }
+
+ private:
+  WatchTargetChangeState state_;
+  std::vector<model::TargetId> target_ids_;
+  nanopb::ByteString resume_token_;
+  util::Status cause_;
+};
+
+bool operator==(const WatchTargetChange& lhs, const WatchTargetChange& rhs);
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_WATCH_CHANGE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.cc
new file mode 100644
index 0000000..be46005
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.cc	
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/watch_stream.h"
+
+#include <utility>
+
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/remote/grpc_nanopb.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using auth::CredentialsProvider;
+using auth::Token;
+using local::TargetData;
+using model::TargetId;
+using remote::ByteBufferReader;
+using util::AsyncQueue;
+using util::Status;
+using util::TimerId;
+
+WatchStream::WatchStream(
+    const std::shared_ptr<AsyncQueue>& async_queue,
+    std::shared_ptr<CredentialsProvider> credentials_provider,
+    Serializer serializer,
+    GrpcConnection* grpc_connection,
+    WatchStreamCallback* callback)
+    : Stream{async_queue, std::move(credentials_provider), grpc_connection,
+             TimerId::ListenStreamConnectionBackoff, TimerId::ListenStreamIdle},
+      watch_serializer_{std::move(serializer)},
+      callback_{NOT_NULL(callback)} {
+}
+
+void WatchStream::WatchQuery(const TargetData& query) {
+  EnsureOnQueue();
+
+  auto request = watch_serializer_.EncodeWatchRequest(query);
+  LOG_DEBUG("%s watch: %s", GetDebugDescription(), request.ToString());
+  Write(MakeByteBuffer(request));
+}
+
+void WatchStream::UnwatchTargetId(TargetId target_id) {
+  EnsureOnQueue();
+
+  auto request = watch_serializer_.EncodeUnwatchRequest(target_id);
+
+  LOG_DEBUG("%s unwatch: %s", GetDebugDescription(), request.ToString());
+  Write(MakeByteBuffer(request));
+}
+
+std::unique_ptr<GrpcStream> WatchStream::CreateGrpcStream(
+    GrpcConnection* grpc_connection, const Token& token) {
+  return grpc_connection->CreateStream("/google.firestore.v1.Firestore/Listen",
+                                       token, this);
+}
+
+void WatchStream::TearDown(GrpcStream* grpc_stream) {
+  grpc_stream->FinishImmediately();
+}
+
+void WatchStream::NotifyStreamOpen() {
+  callback_->OnWatchStreamOpen();
+}
+
+Status WatchStream::NotifyStreamResponse(const grpc::ByteBuffer& message) {
+  ByteBufferReader reader{message};
+  auto response = watch_serializer_.ParseResponse(&reader);
+  if (!reader.ok()) {
+    return reader.status();
+  }
+
+  LOG_DEBUG("%s response: %s", GetDebugDescription(), response.ToString());
+
+  // A successful response means the stream is healthy.
+  backoff_.Reset();
+
+  auto watch_change = watch_serializer_.DecodeWatchChange(&reader, *response);
+  auto version = watch_serializer_.DecodeSnapshotVersion(&reader, *response);
+  if (!reader.ok()) {
+    return reader.status();
+  }
+
+  callback_->OnWatchStreamChange(*watch_change, version);
+
+  return Status::OK();
+}
+
+void WatchStream::NotifyStreamClose(const Status& status) {
+  callback_->OnWatchStreamClose(status);
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.h
new file mode 100644
index 0000000..c43fd06
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/watch_stream.h	
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_WATCH_STREAM_H_
+#define FIRESTORE_CORE_SRC_REMOTE_WATCH_STREAM_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/remote_objc_bridge.h"
+#include "Firestore/core/src/remote/stream.h"
+#include "Firestore/core/src/remote/watch_change.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+
+namespace local {
+class TargetData;
+}  // namespace local
+
+namespace remote {
+
+class Serializer;
+
+/**
+ * An interface defining the events that can be emitted by the `WatchStream`.
+ */
+class WatchStreamCallback {
+ public:
+  virtual ~WatchStreamCallback() = default;
+
+  /**
+   * Called by the `WatchStream` when it is ready to accept outbound request
+   * messages.
+   */
+  virtual void OnWatchStreamOpen() = 0;
+
+  /**
+   * Called by the `WatchStream` with changes and the snapshot versions
+   * included in in the `WatchChange` responses sent back by the server.
+   */
+  virtual void OnWatchStreamChange(
+      const WatchChange& change,
+      const model::SnapshotVersion& snapshot_version) = 0;
+
+  /**
+   * Called by the `WatchStream` when the underlying streaming RPC is
+   * interrupted for whatever reason, usually because of an error, but possibly
+   * due to an idle timeout. The status passed to this method may be ok, in
+   * which case the stream was closed without attributable fault.
+   *
+   * NOTE: This will not be called after `Stop` is called on the stream. See
+   * "Starting and Stopping" on `Stream` for details.
+   */
+  virtual void OnWatchStreamClose(const util::Status& status) = 0;
+};
+
+/**
+ * A `Stream` that implements the StreamingWatch RPC.
+ *
+ * Once the `WatchStream` has called the `OnWatchStreamOpen` method on the
+ * callback, any number of `WatchQuery` and `UnwatchTargetId` calls can be sent
+ * to control what changes will be sent from the server for WatchChanges.
+ */
+class WatchStream : public Stream {
+ public:
+  WatchStream(const std::shared_ptr<util::AsyncQueue>& async_queue,
+              std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+              Serializer serializer,
+              GrpcConnection* grpc_connection,
+              WatchStreamCallback* callback);
+
+  /**
+   * Registers interest in the results of the given query. If the query includes
+   * a resume token, it will be included in the request. Results that affect the
+   * query will be streamed back as WatchChange messages that reference the
+   * target ID included in `query`.
+   */
+  virtual /*virtual for tests only*/ void WatchQuery(
+      const local::TargetData& query);
+
+  /**
+   * Unregisters interest in the results of the query associated with the given
+   * `target_id`.
+   */
+  virtual /*virtual for tests only*/ void UnwatchTargetId(
+      model::TargetId target_id);
+
+ private:
+  std::unique_ptr<GrpcStream> CreateGrpcStream(
+      GrpcConnection* grpc_connection, const auth::Token& token) override;
+  void TearDown(GrpcStream* grpc_stream) override;
+
+  void NotifyStreamOpen() override;
+  util::Status NotifyStreamResponse(const grpc::ByteBuffer& message) override;
+  void NotifyStreamClose(const util::Status& status) override;
+
+  std::string GetDebugName() const override {
+    return "WatchStream";
+  }
+
+  WatchStreamSerializer watch_serializer_;
+  WatchStreamCallback* callback_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_WATCH_STREAM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.cc
new file mode 100644
index 0000000..3b87dde
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.cc	
@@ -0,0 +1,157 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/remote/write_stream.h"
+
+#include <utility>
+
+#include "Firestore/core/src/model/mutation.h"
+#include "Firestore/core/src/nanopb/message.h"
+#include "Firestore/core/src/nanopb/reader.h"
+#include "Firestore/core/src/remote/grpc_nanopb.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/status.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+using auth::CredentialsProvider;
+using auth::Token;
+using model::Mutation;
+using nanopb::ByteString;
+using nanopb::Message;
+using remote::ByteBufferReader;
+using util::AsyncQueue;
+using util::Status;
+using util::TimerId;
+
+WriteStream::WriteStream(
+    const std::shared_ptr<AsyncQueue>& async_queue,
+    std::shared_ptr<CredentialsProvider> credentials_provider,
+    Serializer serializer,
+    GrpcConnection* grpc_connection,
+    WriteStreamCallback* callback)
+    : Stream{async_queue, std::move(credentials_provider), grpc_connection,
+             TimerId::WriteStreamConnectionBackoff, TimerId::WriteStreamIdle},
+      write_serializer_{std::move(serializer)},
+      callback_{NOT_NULL(callback)} {
+}
+
+void WriteStream::set_last_stream_token(ByteString token) {
+  last_stream_token_ = std::move(token);
+}
+
+const ByteString& WriteStream::last_stream_token() const {
+  return last_stream_token_;
+}
+
+void WriteStream::WriteHandshake() {
+  EnsureOnQueue();
+  HARD_ASSERT(IsOpen(), "Writing handshake requires an opened stream");
+  HARD_ASSERT(!handshake_complete(), "Handshake already completed");
+
+  auto request = write_serializer_.EncodeHandshake();
+  LOG_DEBUG("%s initial request: %s", GetDebugDescription(),
+            request.ToString());
+  Write(MakeByteBuffer(request));
+
+  // TODO(dimond): Support stream resumption. We intentionally do not set the
+  // stream token on the handshake, ignoring any stream token we might have.
+}
+
+void WriteStream::WriteMutations(const std::vector<Mutation>& mutations) {
+  EnsureOnQueue();
+  HARD_ASSERT(IsOpen(), "Writing mutations requires an opened stream");
+  HARD_ASSERT(handshake_complete(),
+              "Handshake must be complete before writing mutations");
+
+  auto request = write_serializer_.EncodeWriteMutationsRequest(
+      mutations, last_stream_token());
+  LOG_DEBUG("%s write request: %s", GetDebugDescription(), request.ToString());
+  Write(MakeByteBuffer(request));
+}
+
+std::unique_ptr<GrpcStream> WriteStream::CreateGrpcStream(
+    GrpcConnection* grpc_connection, const Token& token) {
+  return grpc_connection->CreateStream("/google.firestore.v1.Firestore/Write",
+                                       token, this);
+}
+
+void WriteStream::TearDown(GrpcStream* grpc_stream) {
+  if (handshake_complete()) {
+    // Send an empty write request to the backend to indicate imminent stream
+    // closure. This isn't mandatory, but it allows the backend to clean up
+    // resources.
+    auto request =
+        write_serializer_.EncodeEmptyMutationsList(last_stream_token());
+    grpc_stream->WriteAndFinish(MakeByteBuffer(request));
+  } else {
+    grpc_stream->FinishImmediately();
+  }
+}
+
+void WriteStream::NotifyStreamOpen() {
+  callback_->OnWriteStreamOpen();
+}
+
+void WriteStream::NotifyStreamClose(const Status& status) {
+  callback_->OnWriteStreamClose(status);
+  // Delegate's logic might depend on whether handshake was completed, so only
+  // reset it after notifying.
+  handshake_complete_ = false;
+}
+
+Status WriteStream::NotifyStreamResponse(const grpc::ByteBuffer& message) {
+  ByteBufferReader reader{message};
+  Message<google_firestore_v1_WriteResponse> response =
+      write_serializer_.ParseResponse(&reader);
+  if (!reader.ok()) {
+    return reader.status();
+  }
+
+  LOG_DEBUG("%s response: %s", GetDebugDescription(), response.ToString());
+
+  // Always capture the last stream token.
+  set_last_stream_token(ByteString::Take(response->stream_token));
+  response->stream_token = nullptr;
+
+  if (!handshake_complete()) {
+    // The first response is the handshake response
+    handshake_complete_ = true;
+    callback_->OnWriteStreamHandshakeComplete();
+  } else {
+    // A successful first write response means the stream is healthy.
+    // Note that we could consider a successful handshake healthy, however, the
+    // write itself might be causing an error we want to back off from.
+    backoff_.Reset();
+
+    auto version = write_serializer_.DecodeCommitVersion(&reader, *response);
+    auto results = write_serializer_.DecodeMutationResults(&reader, *response);
+    if (!reader.ok()) {
+      return reader.status();
+    }
+
+    callback_->OnWriteStreamMutationResult(version, std::move(results));
+  }
+
+  return Status::OK();
+}
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.h
new file mode 100644
index 0000000..c06f435
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/remote/write_stream.h	
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_REMOTE_WRITE_STREAM_H_
+#define FIRESTORE_CORE_SRC_REMOTE_WRITE_STREAM_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/model/model_fwd.h"
+#include "Firestore/core/src/remote/grpc_connection.h"
+#include "Firestore/core/src/remote/remote_objc_bridge.h"
+#include "Firestore/core/src/remote/stream.h"
+#include "Firestore/core/src/util/async_queue.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+#include "grpcpp/support/byte_buffer.h"
+
+namespace firebase {
+namespace firestore {
+namespace remote {
+
+class Serializer;
+
+class WriteStreamCallback {
+ public:
+  virtual ~WriteStreamCallback() = default;
+
+  /**
+   * Called by the `WriteStream` when it is ready to accept outbound request
+   * messages.
+   */
+  virtual void OnWriteStreamOpen() = 0;
+
+  /**
+   * Called by the `WriteStream` upon a successful handshake response from the
+   * server, which is the receiver's cue to send any pending writes.
+   */
+  virtual void OnWriteStreamHandshakeComplete() = 0;
+
+  /**
+   * Called by the `WriteStream` upon receiving a StreamingWriteResponse from
+   * the server that contains mutation results.
+   */
+  virtual void OnWriteStreamMutationResult(
+      model::SnapshotVersion commit_version,
+      std::vector<model::MutationResult> results) = 0;
+
+  /**
+   * Called when the `WriteStream`'s underlying RPC is interrupted for whatever
+   * reason, usually because of an error, but possibly due to an idle timeout.
+   * The status passed to this method may be "ok", in which case the stream was
+   * closed without attributable fault.
+   *
+   * NOTE: This will not be called after `Stop` is called on the stream. See
+   * "Starting and Stopping" on `Stream` for details.
+   */
+  virtual void OnWriteStreamClose(const util::Status& status) = 0;
+};
+
+/**
+ * A Stream that implements the Write RPC.
+ *
+ * The Write RPC requires the caller to maintain special stream token
+ * state in-between calls, to help the server understand which responses the
+ * client has processed by the time the next request is made. Every response
+ * will contain a stream token; this value must be passed to the next
+ * request.
+ *
+ * After calling `Start` on this stream, the next request must be a handshake,
+ * containing whatever stream token is on hand. Once a response to this
+ * request is received, all pending mutations may be submitted. When
+ * submitting multiple batches of mutations at the same time, it's
+ * okay to use the same stream token for the calls to `WriteMutations`.
+ *
+ * This class is not intended as a base class; all virtual methods exist only
+ * for the sake of tests.
+ */
+class WriteStream : public Stream {
+ public:
+  WriteStream(const std::shared_ptr<util::AsyncQueue>& async_queue,
+              std::shared_ptr<auth::CredentialsProvider> credentials_provider,
+              Serializer serializer,
+              GrpcConnection* grpc_connection,
+              WriteStreamCallback* callback);
+
+  void set_last_stream_token(nanopb::ByteString token);
+  /**
+   * The last received stream token from the server, used to acknowledge which
+   * responses the client has processed. Stream tokens are opaque checkpoint
+   * markers whose only real value is their inclusion in the next request.
+   *
+   * `WriteStream` manages propagating this value from responses to the
+   * next request.
+   */
+  const nanopb::ByteString& last_stream_token() const;
+
+  /**
+   * Tracks whether or not a handshake has been successfully exchanged and
+   * the stream is ready to accept mutations.
+   */
+  bool handshake_complete() const {
+    return handshake_complete_;
+  }
+
+  /**
+   * Sends an initial stream token to the server, performing the handshake
+   * required to make the StreamingWrite RPC work.
+   */
+  virtual void WriteHandshake();
+
+  /** Sends a group of mutations to the Firestore backend to apply. */
+  virtual void WriteMutations(const std::vector<model::Mutation>& mutations);
+
+ protected:
+  // For tests only
+  void SetHandshakeComplete(bool value = true) {
+    handshake_complete_ = value;
+  }
+
+ private:
+  std::unique_ptr<GrpcStream> CreateGrpcStream(
+      GrpcConnection* grpc_connection, const auth::Token& token) override;
+  void TearDown(GrpcStream* grpc_stream) override;
+
+  void NotifyStreamOpen() override;
+  util::Status NotifyStreamResponse(const grpc::ByteBuffer& message) override;
+  void NotifyStreamClose(const util::Status& status) override;
+
+  std::string GetDebugName() const override {
+    return "WriteStream";
+  }
+
+  WriteStreamSerializer write_serializer_;
+  WriteStreamCallback* callback_ = nullptr;
+  bool handshake_complete_ = false;
+  nanopb::ByteString last_stream_token_;
+};
+
+}  // namespace remote
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_REMOTE_WRITE_STREAM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp.cc
new file mode 100644
index 0000000..1b60605
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp.cc	
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+
+#include <ostream>
+
+#if defined(__APPLE__)
+#import <CoreFoundation/CoreFoundation.h>
+#elif defined(_STLPORT_VERSION)
+#include <ctime>
+#endif
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace {
+
+constexpr int32_t kNanosPerSecond = 1000 * 1000 * 1000;
+
+/**
+ * Creates a `Timestamp` from the given non-normalized inputs.
+ *
+ * Timestamp protos require `Timestamp` to always has a positive number of
+ * nanoseconds that is counting forward. For negative time, we need to adjust
+ * representations with negative nanoseconds. That is, make (negative seconds s1
+ * + negative nanoseconds ns1) into (negative seconds s2 + positive nanoseconds
+ * ns2). Since nanosecond part is always less than 1 second in our
+ * representation, instead of starting at s1 and going back ns1 nanoseconds,
+ * start at (s1 minus one second) and go *forward* ns2 = (1 second + ns1, ns1 <
+ * 0) nanoseconds.
+ */
+Timestamp MakeNormalizedTimestamp(int64_t seconds, int64_t nanos) {
+  if (nanos < 0) {
+    // Note: if nanoseconds are negative, it must mean that seconds are
+    // non-positive, but the formula would still be valid, so no need to check.
+    seconds = seconds - 1;
+    nanos = kNanosPerSecond + nanos;
+  }
+
+  HARD_ASSERT(nanos < kNanosPerSecond);
+
+  return {seconds, static_cast<int32_t>(nanos)};
+}
+
+}  // namespace
+
+Timestamp::Timestamp(int64_t seconds, int32_t nanoseconds)
+    : seconds_(seconds), nanoseconds_(nanoseconds) {
+  ValidateBounds();
+}
+
+Timestamp Timestamp::Now() {
+#if defined(__APPLE__)
+  // Originally, FIRTimestamp used NSDate to get current time. This method
+  // preserves the lower accuracy of that method.
+  CFAbsoluteTime now =
+      CFAbsoluteTimeGetCurrent() + kCFAbsoluteTimeIntervalSince1970;
+  double seconds_double;
+  double fraction = modf(now, &seconds_double);
+  auto seconds = static_cast<int64_t>(seconds_double);
+  auto nanos = static_cast<int32_t>(fraction * kNanosPerSecond);
+  return MakeNormalizedTimestamp(seconds, nanos);
+
+#elif !defined(_STLPORT_VERSION)
+  // Use the standard <chrono> library from C++11 if possible.
+  return FromTimePoint(std::chrono::system_clock::now());
+#else
+  // If <chrono> is unavailable, use clock_gettime from POSIX, which supports
+  // up to nanosecond resolution. Note that it's a non-standard function
+  // contained in <time.h>.
+  //
+  // Note: it's possible to check for availability of POSIX clock_gettime using
+  // macros (see "Availability" at https://linux.die.net/man/3/clock_gettime).
+  // However, the only platform where <chrono> isn't available is Android with
+  // STLPort standard library, where clock_gettime is known to be available.
+  timespec now;
+  clock_gettime(CLOCK_REALTIME, &now);
+  return MakeNormalizedTimestamp(now.tv_sec, now.tv_nsec);
+#endif  // !defined(_STLPORT_VERSION)
+}
+
+Timestamp Timestamp::FromTimeT(const time_t seconds_since_unix_epoch) {
+  return {seconds_since_unix_epoch, 0};
+}
+
+#if !defined(_STLPORT_VERSION)
+Timestamp Timestamp::FromTimePoint(
+    const std::chrono::time_point<std::chrono::system_clock> time_point) {
+  namespace chr = std::chrono;
+  const auto epoch_time = time_point.time_since_epoch();
+  auto seconds = chr::duration_cast<chr::duration<int64_t>>(epoch_time);
+  auto nanos = chr::duration_cast<chr::nanoseconds>(epoch_time - seconds);
+
+  Timestamp result = MakeNormalizedTimestamp(seconds.count(), nanos.count());
+  result.ValidateBounds();
+  return result;
+}
+
+#endif  // !defined(_STLPORT_VERSION)
+
+std::string Timestamp::ToString() const {
+  return absl::StrCat("Timestamp(seconds=", seconds_,
+                      ", nanoseconds=", nanoseconds_, ")");
+}
+
+std::ostream& operator<<(std::ostream& out, const Timestamp& timestamp) {
+  return out << timestamp.ToString();
+}
+
+void Timestamp::ValidateBounds() const {
+  HARD_ASSERT(nanoseconds_ >= 0, "Timestamp nanoseconds out of range: %s",
+              nanoseconds_);
+  HARD_ASSERT(nanoseconds_ < kNanosPerSecond,
+              "Timestamp nanoseconds out of range: %s", nanoseconds_);
+  // Midnight at the beginning of 1/1/1 is the earliest timestamp Firestore
+  // supports.
+  HARD_ASSERT(seconds_ >= -62135596800L, "Timestamp seconds out of range: %s",
+              seconds_);
+  // This will break in the year 10,000.
+  HARD_ASSERT(seconds_ < 253402300800L, "Timestamp seconds out of range: %s",
+              seconds_);
+}
+
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.cc
new file mode 100644
index 0000000..7b3514e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.cc	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/timestamp_internal.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/hashing.h"
+#include "Firestore/core/src/util/statusor.h"
+
+namespace util = firebase::firestore::util;
+
+namespace firebase {
+
+util::StatusOr<Timestamp> TimestampInternal::FromUntrustedTime(
+    absl::Time time) {
+  // Note `ToUnixSeconds` rounds towards negative infinity, this makes the
+  // `nanos` calculated below always non-negative, meeting protobuf's
+  // requirement.
+  int64_t seconds = absl::ToUnixSeconds(time);
+  int32_t nanos = static_cast<int32_t>((time - absl::FromUnixSeconds(seconds)) /
+                                       absl::Nanoseconds(1));
+  return FromUntrustedSecondsAndNanos(seconds, nanos);
+}
+
+util::StatusOr<Timestamp> TimestampInternal::FromUntrustedSecondsAndNanos(
+    int64_t seconds, int32_t nanos) {
+  // The Timestamp ctor will assert if we provide values outside the valid
+  // range. However, since we're decoding, a single corrupt byte could cause
+  // this to occur, so we'll verify the ranges before passing them in since we'd
+  // rather not abort in these situations.
+  if (seconds < Min().seconds()) {
+    return util::Status(
+        firestore::Error::kErrorInvalidArgument,
+        "Invalid message: timestamp beyond the earliest supported date");
+  } else if (Max().seconds() < seconds) {
+    return util::Status(
+        firestore::Error::kErrorInvalidArgument,
+        "Invalid message: timestamp beyond the latest supported date");
+  } else if (nanos < 0 || nanos > 999999999) {
+    return util::Status(
+        firestore::Error::kErrorInvalidArgument,
+        "Invalid message: timestamp nanos must be between 0 and 999999999");
+  }
+
+  return Timestamp(seconds, nanos);
+}
+
+size_t TimestampInternal::Hash(const Timestamp& timestamp) {
+  return util::Hash(timestamp.seconds(), timestamp.nanoseconds());
+}
+
+Timestamp TimestampInternal::Truncate(const Timestamp& timestamp) {
+  int32_t truncated_nanos = timestamp.nanoseconds() / 1000 * 1000;
+  return Timestamp(timestamp.seconds(), truncated_nanos);
+}
+
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.h
new file mode 100644
index 0000000..ee50665
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/timestamp_internal.h	
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_TIMESTAMP_INTERNAL_H_
+#define FIRESTORE_CORE_SRC_TIMESTAMP_INTERNAL_H_
+
+#include "Firestore/core/include/firebase/firestore/timestamp.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/time/time.h"
+
+namespace firebase {
+
+/**
+ * Details about the Timestamp class which are useful internally, but we don't
+ * want to expose publicly.
+ */
+class TimestampInternal {
+ public:
+  /**
+   * Represents the maximum allowable time that the Timestamp class handles,
+   * specifically 9999-12-31T23:59:59.999999999Z.
+   */
+  static firebase::Timestamp Max() {
+    return {253402300800L - 1, 999999999};
+  }
+
+  /**
+   * Represents the minimum allowable time that the Timestamp class handles,
+   * specifically 0001-01-01T00:00:00Z.
+   */
+  static firebase::Timestamp Min() {
+    return {-62135596800L, 0};
+  }
+
+  static firestore::util::StatusOr<firebase::Timestamp> FromUntrustedTime(
+      absl::Time time);
+  static firestore::util::StatusOr<firebase::Timestamp>
+  FromUntrustedSecondsAndNanos(int64_t seconds, int32_t nanos);
+
+  static size_t Hash(const Timestamp& timestamp);
+
+  /**
+   * Truncates the input timestamp to microsecond precision to match backend
+   * behavior.
+   */
+  static Timestamp Truncate(const Timestamp& timestamp);
+};
+
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_TIMESTAMP_INTERNAL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.cc
new file mode 100644
index 0000000..275cf40
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.cc	
@@ -0,0 +1,198 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/async_queue.h"
+
+#include <utility>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/task.h"
+#include "absl/algorithm/container.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+std::shared_ptr<AsyncQueue> AsyncQueue::Create(
+    std::unique_ptr<Executor> executor) {
+  // Use new because make_shared cannot access a private constructor.
+  auto queue = new AsyncQueue(std::move(executor));
+  return std::shared_ptr<AsyncQueue>(queue);
+}
+
+AsyncQueue::AsyncQueue(std::unique_ptr<Executor> executor)
+    : executor_{std::move(executor)} {
+  is_operation_in_progress_ = false;
+}
+
+AsyncQueue::~AsyncQueue() {
+  Dispose();
+}
+
+void AsyncQueue::EnterRestrictedMode() {
+  std::lock_guard<std::mutex> lock(mutex_);
+  if (mode_ == Mode::kDisposed) return;
+
+  mode_ = Mode::kRestricted;
+}
+
+void AsyncQueue::Dispose() {
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    mode_ = Mode::kDisposed;
+  }
+
+  executor_->Dispose();
+}
+
+void AsyncQueue::VerifyIsCurrentExecutor() const {
+  HARD_ASSERT(
+      executor_->IsCurrentExecutor(),
+      "Expected to be called by the executor associated with this queue "
+      "(expected executor: '%s', actual executor: '%s')",
+      executor_->Name(), executor_->CurrentExecutorName());
+}
+
+void AsyncQueue::VerifyIsCurrentQueue() const {
+  VerifyIsCurrentExecutor();
+  HARD_ASSERT(is_operation_in_progress_,
+              "VerifyIsCurrentQueue called when no operation is executing "
+              "(expected executor: '%s', actual executor: '%s')",
+              executor_->Name(), executor_->CurrentExecutorName());
+}
+
+void AsyncQueue::ExecuteBlocking(const Operation& operation) {
+  // This is not guarded by `is_shutting_down_` because it is the execution
+  // of the operation, not scheduling. Checking `is_shutting_down_` here
+  // would mean *all* operations will not run after shutdown, which is not
+  // intended.
+  VerifyIsCurrentExecutor();
+  HARD_ASSERT(!is_operation_in_progress_,
+              "ExecuteBlocking may not be called "
+              "before the previous operation finishes executing");
+
+  is_operation_in_progress_ = true;
+  operation();
+  is_operation_in_progress_ = false;
+}
+
+bool AsyncQueue::Enqueue(const Operation& operation) {
+  VerifySequentialOrder();
+  return EnqueueRelaxed(operation);
+}
+
+bool AsyncQueue::EnqueueEvenWhileRestricted(const Operation& operation) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  if (mode_ == Mode::kDisposed) return false;
+
+  executor_->Execute(Wrap(operation));
+  return true;
+}
+
+bool AsyncQueue::is_running() const {
+  std::lock_guard<std::mutex> lock(mutex_);
+  return mode_ == Mode::kRunning;
+}
+
+bool AsyncQueue::EnqueueRelaxed(const Operation& operation) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  if (mode_ != Mode::kRunning) return false;
+
+  executor_->Execute(Wrap(operation));
+  return true;
+}
+
+DelayedOperation AsyncQueue::EnqueueAfterDelay(Milliseconds delay,
+                                               const TimerId timer_id,
+                                               const Operation& operation) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  VerifyIsCurrentExecutor();
+
+  if (mode_ != Mode::kRunning) {
+    return DelayedOperation();
+  }
+
+  // Skip delays for timer_ids that have been overridden
+  if (absl::c_linear_search(timer_ids_to_skip_, timer_id)) {
+    delay = Milliseconds(0);
+  }
+
+  auto tag = static_cast<Executor::Tag>(timer_id);
+  return executor_->Schedule(delay, tag, Wrap(operation));
+}
+
+AsyncQueue::Operation AsyncQueue::Wrap(const Operation& operation) {
+  // Decorator pattern: wrap `operation` into a call to `ExecuteBlocking` to
+  // ensure that it doesn't spawn any nested operations.
+
+  // The Executor guarantees that this operation will either execute before
+  // `Dispose` completes or not at all.
+  return [this, operation] { this->ExecuteBlocking(operation); };
+}
+
+void AsyncQueue::VerifySequentialOrder() const {
+  // This is the inverse of `VerifyIsCurrentQueue`.
+  HARD_ASSERT(!is_operation_in_progress_ || !executor_->IsCurrentExecutor(),
+              "Enqueue methods cannot be called when we are already running on "
+              "target executor "
+              "(this queue's executor: '%s', current executor: '%s')",
+              executor_->Name(), executor_->CurrentExecutorName());
+}
+
+// Test-only functions
+
+void AsyncQueue::EnqueueBlocking(const Operation& operation) {
+  VerifySequentialOrder();
+  executor_->ExecuteBlocking(Wrap(operation));
+}
+
+bool AsyncQueue::IsScheduled(const TimerId timer_id) const {
+  return executor_->IsTagScheduled(static_cast<int>(timer_id));
+}
+
+void AsyncQueue::RunScheduledOperationsUntil(const TimerId last_timer_id) {
+  HARD_ASSERT(!executor_->IsCurrentExecutor(),
+              "RunScheduledOperationsUntil must not be called on the queue");
+
+  executor_->ExecuteBlocking([this, last_timer_id] {
+    HARD_ASSERT(
+        last_timer_id == TimerId::All || IsScheduled(last_timer_id),
+        "Attempted to run scheduled operations until missing timer id: %s",
+        last_timer_id);
+
+    for (auto* next = executor_->PopFromSchedule(); next != nullptr;
+         next = executor_->PopFromSchedule()) {
+      // `ExecuteAndRelease` can delete the `Task` so read the tag first.
+      bool found_tag = next->tag() == static_cast<int>(last_timer_id);
+
+      next->ExecuteAndRelease();
+      if (found_tag) {
+        break;
+      }
+    }
+  });
+}
+
+void AsyncQueue::SkipDelaysForTimerId(TimerId timer_id) {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  timer_ids_to_skip_.push_back(timer_id);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.h
new file mode 100644
index 0000000..fd4dfa0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/async_queue.h	
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_ASYNC_QUEUE_H_
+#define FIRESTORE_CORE_SRC_UTIL_ASYNC_QUEUE_H_
+
+#include <atomic>
+#include <chrono>  // NOLINT(build/c++11)
+#include <functional>
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <vector>
+
+#include "Firestore/core/src/util/executor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Well-known "timer" ids used when scheduling delayed operations on the
+ * AsyncQueue. These ids can then be used from tests to check for the
+ * presence of delayed operations or to run them early.
+ */
+enum class TimerId {
+  /** All can be used with `RunScheduledOperationsUntil` to run all timers. */
+  All,
+
+  /**
+   * The following 4 timers are used in `Stream` for the listen and write
+   * streams. The "Idle" timer is used to close the stream due to inactivity.
+   * The "ConnectionBackoff" timer is used to restart a stream once the
+   * appropriate backoff delay has elapsed.
+   */
+  ListenStreamIdle,
+  ListenStreamConnectionBackoff,
+  WriteStreamIdle,
+  WriteStreamConnectionBackoff,
+
+  /**
+   * A timer used in `OnlineStateTracker` to transition from
+   * `OnlineStateUnknown` to `Offline` after a set timeout, rather than waiting
+   * indefinitely for success or failure.
+   */
+  OnlineStateTimeout,
+
+  /**
+   * A timer used to periodically attempt LRU Garbage collection
+   */
+  GarbageCollectionDelay,
+
+  /**
+   * A timer used to retry transactions. Since there can be multiple concurrent
+   * transactions, multiple of these may be in the queue at a given time.
+   */
+  RetryTransaction
+};
+
+// A serial queue that executes given operations asynchronously, one at a time.
+// Operations may be scheduled to be executed as soon as possible or in the
+// future. Operations scheduled for the same time are FIFO-ordered.
+//
+// `AsyncQueue` wraps a platform-specific executor, adding checks that enforce
+// sequential ordering of operations: an enqueued operation, while being run,
+// normally cannot enqueue other operations for immediate execution (but see
+// `EnqueueRelaxed`).
+//
+// `AsyncQueue` methods have particular expectations about whether they must be
+// invoked on the queue or not; check "preconditions" section in comments on
+// each method.
+//
+// A significant portion of `AsyncQueue` interface only exists for test purposes
+// and must *not* be used in regular code.
+class AsyncQueue : public std::enable_shared_from_this<AsyncQueue> {
+ public:
+  using Operation = Executor::Operation;
+  using Milliseconds = Executor::Milliseconds;
+
+  enum class Mode {
+    /**
+     * The default mode of an `AsyncQueue` after creation. All tasks are
+     * allowed.
+     */
+    kRunning,
+
+    /**
+     * The `AsyncQueue` enters `Mode::kRestricted` after the a user terminates
+     * an instance of Firestore. In this mode, most tasks are not allowed: only
+     * a limited set of special operations are still allowed to run.
+     */
+    kRestricted,
+
+    /**
+     * Finally, once the Firestore instance is in the process of being
+     * destroyed, the `AsyncQueue` stops accepting all tasks.
+     */
+    kDisposed,
+  };
+
+  static std::shared_ptr<AsyncQueue> Create(std::unique_ptr<Executor> executor);
+
+  ~AsyncQueue();
+
+  // Puts the `AsyncQueue` into restricted mode, where calling most Enqueue*
+  // methods becomes a no-op. The exception is `EnqueueEvenWhileRestricted`,
+  // which still enqueues operations even while in restricted mode.
+  void EnterRestrictedMode();
+
+  // Disposes of the `AsyncQueue` and synchronously waits for any currently
+  // executing tasks to complete. Queued operations that have not started
+  // executing and all scheduled operations are discarded. As soon as Dispose
+  // begins, all Enqueue* operations become no-ops without exception.
+  void Dispose();
+
+  // Asserts for the caller that it is being invoked as part of an operation on
+  // the `AsyncQueue`.
+  void VerifyIsCurrentQueue() const;
+
+  // Enqueue methods
+
+  // Puts the `operation` on the queue to be executed as soon as possible, while
+  // maintaining FIFO order.
+  //
+  // Precondition: `Enqueue` calls cannot be nested; that is, `Enqueue` may not
+  // be called by a previously enqueued operation when it is run (as a special
+  // case, destructors invoked when an enqueued operation has run and is being
+  // destroyed may invoke `Enqueue`).
+  //
+  // After the shutdown process has initiated (`is_running()` is false), calling
+  // `Enqueue` is a no-op.
+  //
+  // @return true if the operation was successfully enqueued or false if the
+  //     operation was not enqueued because the `AsyncQueue` has already entered
+  //     restricted mode or been disposed.
+  bool Enqueue(const Operation& operation);
+
+  // Like `Enqueue`, but it will proceed scheduling the requested operation
+  // regardless of whether the queue is in restricted mode or not.
+  //
+  // @return true if the operation was successfully enqueued or false if the
+  //     operation was not enqueued because the `AsyncQueue` has already been
+  //     disposed.
+  bool EnqueueEvenWhileRestricted(const Operation& operation);
+
+  // Like `Enqueue`, but without applying any prerequisite checks.
+  bool EnqueueRelaxed(const Operation& operation);
+
+  // Returns true if the queue is still in the main kRunning mode (i.e. not
+  // restricted or disposed).
+  bool is_running() const;
+
+  // Puts the `operation` on the queue to be executed `delay` milliseconds from
+  // now, and returns a handle that allows to cancel the operation (provided it
+  // hasn't run already).
+  //
+  // `operation` is tagged by a `timer_id` which allows to identify the caller.
+  // Only one operation tagged with any given `timer_id` may be on the queue at
+  // any time; an attempt to put another such operation will result in an
+  // assertion failure. In tests, these tags also allow to check for presence of
+  // certain operations and to run certain operations in advance.
+  //
+  // Precondition: `EnqueueAfterDelay` is being invoked asynchronously on the
+  // queue.
+  DelayedOperation EnqueueAfterDelay(Milliseconds delay,
+                                     TimerId timer_id,
+                                     const Operation& operation);
+
+  // Direct execution
+
+  // Immediately executes the `operation` on the queue.
+  //
+  // This is largely a workaround to allow other classes (GRPC) to directly
+  // access the underlying dispatch queue without getting `AsyncQueue` into an
+  // inconsistent state.
+  //
+  // Precondition: no other operation is being executed on the queue at the
+  // moment of the call (i.e., `ExecuteBlocking` cannot call `ExecuteBlocking`).
+  //
+  // Precondition: `ExecuteBlocking` is being invoked asynchronously on the
+  // queue.
+  void ExecuteBlocking(const Operation& operation);
+
+  // Returns the underlying platform-dependent executor.
+  Executor* executor() {
+    return executor_.get();
+  }
+
+  // Test-only interface follows
+  // TODO(varconst): move the test-only interface into a helper object that is
+  // a friend of AsyncQueue and delegates its public methods to private methods
+  // on AsyncQueue.
+
+  // Like `Enqueue`, but blocks until the `operation` is complete.
+  void EnqueueBlocking(const Operation& operation);
+
+  // Checks whether an operation tagged with `timer_id` is currently scheduled
+  // for execution in the future.
+  bool IsScheduled(TimerId timer_id) const;
+
+  // Force runs operations scheduled for future execution, in scheduled order,
+  // up to *and including* the operation tagged with `last_timer_id`.
+  //
+  // Precondition: `RunScheduledOperationsUntil` is *not* being invoked on the
+  // queue.
+  void RunScheduledOperationsUntil(TimerId last_timer_id);
+
+  // For tests: Skip all subsequent delays for a specific TimerId.
+  // NOTE: This does not work with TimerId::All.
+  void SkipDelaysForTimerId(TimerId timer_id);
+
+ private:
+  explicit AsyncQueue(std::unique_ptr<Executor> executor);
+
+  Operation Wrap(const Operation& operation);
+
+  // Asserts that the current invocation happens asynchronously on the queue.
+  void VerifyIsCurrentExecutor() const;
+  void VerifySequentialOrder() const;
+
+  std::atomic<bool> is_operation_in_progress_;
+  std::unique_ptr<Executor> executor_;
+
+  mutable std::mutex mutex_;
+  Mode mode_ = Mode::kRunning;
+
+  std::vector<TimerId> timer_ids_to_skip_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_ASYNC_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.cc
new file mode 100644
index 0000000..90948ab
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.cc	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/autoid.h"
+
+#include <random>
+#include <string>
+
+#include "Firestore/core/src/util/secure_random.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+const int kAutoIdLength = 20;
+const char kAutoIdAlphabet[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+SecureRandom& GetSharedRandom() {
+  static auto* shared_random = new SecureRandom();
+  return *shared_random;
+}
+
+}  // namespace
+
+std::string CreateAutoId() {
+  std::string auto_id;
+  auto_id.reserve(kAutoIdLength);
+
+  // -2 here because:
+  //   * sizeof(kAutoIdAlphabet) includes the trailing null terminator
+  //   * uniform_int_distribution is inclusive on both sizes
+  std::uniform_int_distribution<int> letters(0, sizeof(kAutoIdAlphabet) - 2);
+
+  SecureRandom& shared_random = GetSharedRandom();
+  for (int i = 0; i < kAutoIdLength; i++) {
+    int rand_index = letters(shared_random);
+    auto_id.append(1, kAutoIdAlphabet[rand_index]);
+  }
+  return auto_id;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.h
new file mode 100644
index 0000000..d7b63d2
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/autoid.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_AUTOID_H_
+#define FIRESTORE_CORE_SRC_UTIL_AUTOID_H_
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Generates a random ID suitable for use as a document ID.
+std::string CreateAutoId();
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_AUTOID_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.cc
new file mode 100644
index 0000000..d2b2bec
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.cc	
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/background_queue.h"
+
+#include "Firestore/core/src/util/executor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+BackgroundQueue::BackgroundQueue(Executor* executor) : executor_(executor) {
+}
+
+void BackgroundQueue::Execute(std::function<void()>&& operation) {
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    pending_tasks_ += 1;
+  }
+
+  executor_->Execute([this, operation]() {
+    operation();
+
+    std::lock_guard<std::mutex> lock(mutex_);
+    pending_tasks_ -= 1;
+    if (pending_tasks_ == 0) {
+      done_.notify_all();
+    }
+  });
+}
+
+void BackgroundQueue::AwaitAll() {
+  std::unique_lock<std::mutex> lock(mutex_);
+  done_.wait(lock, [this] { return pending_tasks_ == 0; });
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.h
new file mode 100644
index 0000000..1f26077
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/background_queue.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_BACKGROUND_QUEUE_H_
+#define FIRESTORE_CORE_SRC_UTIL_BACKGROUND_QUEUE_H_
+
+#include <condition_variable>  // NOLINT(build/c++11)
+#include <functional>
+#include <mutex>  // NOLINT(build/c++11)
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class Executor;
+
+/**
+ * A simple queue that executes tasks in parallel on an Executor and supports
+ * blocking on their completion.
+ *
+ * This class is thread-safe.
+ */
+class BackgroundQueue {
+ public:
+  explicit BackgroundQueue(Executor* executor);
+
+  /** Enqueue a task on the Executor. */
+  void Execute(std::function<void()>&& operation);
+
+  /** Wait for all currently scheduled tasks to complete. */
+  void AwaitAll();
+
+ private:
+  Executor* executor_ = nullptr;
+  int pending_tasks_ = 0;
+  std::mutex mutex_;
+  std::condition_variable done_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_BACKGROUND_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.cc
new file mode 100644
index 0000000..5c5e988
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.cc	
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/bits.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+int Bits::Log2Floor_Portable(uint32_t n) {
+  if (n == 0) return -1;
+  int log = 0;
+  uint32_t value = n;
+  for (int i = 4; i >= 0; --i) {
+    int shift = (1 << i);
+    uint32_t x = value >> shift;
+    if (x != 0) {
+      value = x;
+      log += shift;
+    }
+  }
+  HARD_ASSERT(value == 1);
+  return log;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.h
new file mode 100644
index 0000000..3346f62
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/bits.h	
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_BITS_H_
+#define FIRESTORE_CORE_SRC_UTIL_BITS_H_
+
+// Various bit-twiddling functions, all of which are static members of the Bits
+// class (making it effectively a namespace). Operands are unsigned integers.
+// Munging bits in _signed_ integers is fraught with peril! For example,
+// -5 << n has undefined behavior (for some values of n).
+
+#include <cstdint>
+
+#if _MSC_VER
+// The Microsoft implementation of iso646.h defines alternative operator names
+// as macros and this interferes with the inline assembly, below, which uses the
+// `and` and `xor` instructions. Defining these as macros is conforming behavior
+// for C but not C++, where these are keywords.
+//
+// Unfortunately, fixing this by undefining the macros can't be enabled
+// everywhere because other compilers (e.g. Clang) specifically prevent the use
+// of these keywords as macro names.
+#ifdef and
+#undef and
+#endif
+
+#ifdef xor
+#undef xor
+#endif
+#endif  // _MSC_VER
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class Bits_Port32_Test;
+class Bits_Port64_Test;
+
+class Bits {
+ public:
+  /** Return floor(log2(n)) for positive integer n.  Returns -1 iff n == 0. */
+  static int Log2Floor(uint32_t n);
+  static int Log2Floor64(uint64_t n);
+
+  /**
+   * Potentially faster version of Log2Floor() that returns an
+   * undefined value if n == 0.
+   */
+  static int Log2FloorNonZero(uint32_t n);
+  static int Log2FloorNonZero64(uint64_t n);
+
+ private:
+  // Portable implementations.
+  static int Log2Floor_Portable(uint32_t n);
+  static int Log2Floor64_Portable(uint64_t n);
+  static int Log2FloorNonZero_Portable(uint32_t n);
+  static int Log2FloorNonZero64_Portable(uint64_t n);
+
+  Bits(Bits const&) = delete;
+  void operator=(Bits const&) = delete;
+
+  // Allow tests to call _Portable variants directly.
+  friend class Bits_Port32_Test;
+  friend class Bits_Port64_Test;
+};
+
+// ------------------------------------------------------------------------
+// Implementation details follow
+// ------------------------------------------------------------------------
+
+#if defined(__GNUC__)
+
+inline int Bits::Log2Floor(uint32_t n) {
+  return n == 0 ? -1 : 31 ^ __builtin_clz(n);
+}
+
+inline int Bits::Log2FloorNonZero(uint32_t n) {
+  return 31 ^ __builtin_clz(n);
+}
+
+inline int Bits::Log2Floor64(uint64_t n) {
+  return n == 0 ? -1 : 63 ^ __builtin_clzll(n);
+}
+
+inline int Bits::Log2FloorNonZero64(uint64_t n) {
+  return 63 ^ __builtin_clzll(n);
+}
+
+#elif defined(_MSC_VER)
+
+inline int Bits::Log2FloorNonZero(uint32_t n) {
+#ifdef _M_IX86
+  _asm {
+    bsr ebx, n
+    mov n, ebx
+  }
+  return n;
+#else
+  return Bits::Log2FloorNonZero_Portable(n);
+#endif
+}
+
+inline int Bits::Log2Floor(uint32_t n) {
+#ifdef _M_IX86
+  _asm {
+    xor ebx, ebx
+    mov eax, n
+    and eax, eax
+    jz return_ebx
+    bsr ebx, eax
+  return_ebx:
+    mov n, ebx
+  }
+  return n;
+#else
+  return Bits::Log2Floor_Portable(n);
+#endif
+}
+
+inline int Bits::Log2Floor64(uint64_t n) {
+  return Bits::Log2Floor64_Portable(n);
+}
+
+inline int Bits::Log2FloorNonZero64(uint64_t n) {
+  return Bits::Log2FloorNonZero64_Portable(n);
+}
+
+#else  // !__GNUC__ && !_MSC_VER
+
+inline int Bits::Log2Floor64(uint64_t n) {
+  return Bits::Log2Floor64_Portable(n);
+}
+
+inline int Bits::Log2FloorNonZero64(uint64_t n) {
+  return Bits::Log2FloorNonZero64_Portable(n);
+}
+
+#endif
+
+inline int Bits::Log2FloorNonZero_Portable(uint32_t n) {
+  // Just use the common routine
+  return Log2Floor(n);
+}
+
+// Log2Floor64() is defined in terms of Log2Floor32(), Log2FloorNonZero32()
+inline int Bits::Log2Floor64_Portable(uint64_t n) {
+  const auto top_bits = static_cast<uint32_t>(n >> 32);
+  if (top_bits == 0) {
+    // Top bits are zero, so scan in bottom bits
+    return Log2Floor(static_cast<uint32_t>(n));
+  } else {
+    return 32 + Log2FloorNonZero(top_bits);
+  }
+}
+
+// Log2FloorNonZero64() is defined in terms of Log2FloorNonZero32()
+inline int Bits::Log2FloorNonZero64_Portable(uint64_t n) {
+  const auto top_bits = static_cast<uint32_t>(n >> 32);
+  if (top_bits == 0) {
+    // Top bits are zero, so scan in bottom bits
+    return Log2FloorNonZero(static_cast<uint32_t>(n));
+  } else {
+    return 32 + Log2FloorNonZero(top_bits);
+  }
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_BITS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream.h
new file mode 100644
index 0000000..5ed6ba6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream.h	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_H_
+#define FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_H_
+
+#include <cstddef>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Represents results from read operations on a `ByteStream`.
+ */
+class StreamReadResult {
+ public:
+  StreamReadResult(StatusOr<std::string> result, bool eof)
+      : result_(std::move(result)), eof_(eof) {
+  }
+
+  /** Returns whether the `ByteStream` instance has reached to the end. */
+  bool eof() const {
+    return eof_;
+  }
+
+  /** Whether the read operation is successful. */
+  bool ok() const {
+    return result_.ok();
+  }
+
+  const Status& status() const {
+    return result_.status();
+  }
+
+  const std::string& ValueOrDie() const& {
+    return result_.ValueOrDie();
+  }
+
+  std::string& ValueOrDie() & {
+    return result_.ValueOrDie();
+  }
+
+  const std::string&& ValueOrDie() const&& {
+    return std::move(result_).ValueOrDie();
+  }
+
+  std::string&& ValueOrDie() && {
+    return std::move(result_).ValueOrDie();
+  }
+
+ private:
+  StatusOr<std::string> result_;
+  bool eof_ = false;
+};
+
+/**
+ * A class representing byte streams, providing interfaces for stream reading
+ * on top of potentially different stream implementations: NSInputStream,
+ * istream, etc.
+ */
+class ByteStream {
+ public:
+  virtual ~ByteStream() = default;
+
+  /**
+   * Reads until either a specified (`delim`) character is encountered, or the
+   * `max_length` number of bytes has been read, or the end of stream has been
+   * reached.
+   *
+   * Note in the case when `delim` is encountered, the `delim` character is not
+   * read after this operation, and will be the first character for the next
+   * read operation.
+   */
+  virtual StreamReadResult ReadUntil(char delim, size_t max_length) = 0;
+
+  /**
+   * Reads until the `max_length` number of bytes has been read, or the end of
+   * stream has been reached.
+   */
+  virtual StreamReadResult Read(size_t max_length) = 0;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.h
new file mode 100644
index 0000000..04d734c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.h	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_APPLE_H_
+#define FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_APPLE_H_
+
+#if !defined(__OBJC__)
+#error "This header only supports Objective-C++."
+#endif  // !defined(__OBJC__)
+
+#import <Foundation/Foundation.h>
+
+#include <cstdint>
+#include <string>
+
+#include "Firestore/core/src/util/byte_stream.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class ByteStreamApple : public ByteStream {
+ public:
+  explicit ByteStreamApple(NSInputStream* input) : input_(input) {
+    if ([input_ streamStatus] == NSStreamStatusNotOpen) {
+      [input_ open];
+    }
+  }
+
+  StreamReadResult ReadUntil(char delim, size_t max_length) override;
+  StreamReadResult Read(size_t max_length) override;
+
+ private:
+  StreamReadResult ConsumeBuffer();
+  StreamReadResult ErrorResult();
+  bool eof() const;
+  int32_t ReadToBuffer(size_t max_length);
+
+  NSInputStream* input_ = nullptr;
+  std::string buffer_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.mm
new file mode 100644
index 0000000..71ad080
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_apple.mm	
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/byte_stream_apple.h"
+
+#include <algorithm>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/string_apple.h"
+#include "Firestore/core/src/util/string_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+StreamReadResult ByteStreamApple::ReadUntil(char delim, size_t max_length) {
+  size_t found_at = std::string::npos;
+  size_t last_pos = 0;
+  while (buffer_.size() < max_length) {
+    auto read = ReadToBuffer(max_length - buffer_.size());
+    if (read < 0) {
+      return ErrorResult();
+    }
+
+    found_at = buffer_.find(delim, last_pos);
+    last_pos = buffer_.size();
+    if (found_at != std::string::npos || read == 0) {
+      break;
+    }
+  }
+
+  // Still not found, or the buffer happens to be of the sized as requested.
+  // Either way, return the whole `buffer_` and clear it.
+  if (found_at == std::string::npos && buffer_.size() == max_length) {
+    return ConsumeBuffer();
+  }
+
+  // Either we found the delim, or the buffer is already larger then requested,
+  // the result will be a substring here.
+  auto end_pos = std::min(max_length, found_at);
+  std::string result = buffer_.substr(0, end_pos);
+  buffer_.erase(0, end_pos);
+  StreamReadResult read_result(std::move(result), eof());
+  return read_result;
+}
+
+StreamReadResult ByteStreamApple::Read(size_t max_length) {
+  // Serve from buffer_
+  if (buffer_.size() > max_length) {
+    std::string result = buffer_.substr(0, max_length);
+    buffer_.erase(0, max_length);
+    StreamReadResult read_result(std::move(result), eof());
+    return read_result;
+  }
+
+  auto read = ReadToBuffer(max_length - buffer_.size());
+  if (read < 0) {
+    return ErrorResult();
+  }
+
+  return ConsumeBuffer();
+}
+
+int32_t ByteStreamApple::ReadToBuffer(size_t max_length) {
+  std::string result(max_length + 1, '\0');
+  auto* data_ptr = reinterpret_cast<uint8_t*>(&result[0]);
+  NSInteger read = [input_ read:data_ptr maxLength:max_length];
+
+  if (read > 0) {
+    buffer_.append(result.substr(0, static_cast<unsigned long>(read)));
+  }
+
+  return static_cast<int32_t>(read);
+}
+
+StreamReadResult ByteStreamApple::ConsumeBuffer() {
+  // NSInputStream does not have consistent behavior with streamStatus, we
+  // perform a "peek" operation here to match with C++ istream implementation,
+  // and make the behavior deterministic.
+  char peek_result = '\0';
+  auto* data_ptr = reinterpret_cast<uint8_t*>(&peek_result);
+  NSInteger read = [input_ read:data_ptr maxLength:1];
+
+  bool is_eof = (read == 0);
+  StreamReadResult read_result(std::move(buffer_), is_eof);
+
+  buffer_.clear();
+  // If peek actually succeeds, append the read char.
+  if (read > 0) {
+    buffer_.push_back(peek_result);
+  }
+  return read_result;
+}
+
+StreamReadResult ByteStreamApple::ErrorResult() {
+  return StreamReadResult(
+      Status::FromNSError(input_.streamError),
+      input_.streamStatus == NSStreamStatus::NSStreamStatusAtEnd);
+}
+
+bool ByteStreamApple::eof() const {
+  return buffer_.empty() &&
+         input_.streamStatus == NSStreamStatus::NSStreamStatusAtEnd;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.cc
new file mode 100644
index 0000000..426a782
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.cc	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/byte_stream_cpp.h"
+
+#include <string>
+#include <vector>
+
+#include "Firestore/core/src/util/statusor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+StreamReadResult ByteStreamCpp::ReadUntil(char delim, size_t max_length) {
+  // Fill `result` until a `{` is found.
+  std::string result(max_length + 1, '\0');
+  input_->get(&result[0], max_length + 1, delim);
+
+  return ToReadResult(result);
+}
+
+StreamReadResult ByteStreamCpp::Read(size_t max_length) {
+  std::string result(max_length + 1, '\0');
+  input_->read(&result[0], max_length);
+
+  return ToReadResult(result);
+}
+
+StreamReadResult ByteStreamCpp::ToReadResult(const std::string& result) {
+  if (input_->bad()) {
+    return StreamReadResult(
+        Status(Error::kErrorDataLoss, "Reading input stream failed with error"),
+        input_->eof());
+  }
+
+  // if fail() returns true while bad() returns false, it means less than
+  // expected characters are read, we can still continue until eof() is hit,
+  // so clearing failbit here.
+  if (input_->fail() && !input_->eof()) {
+    input_->clear();
+  }
+
+  // Saving the read count from reading `result`, because we are doing another
+  // read (peek) to determine if it is EOF yet.
+  auto result_read_count = input_->gcount();
+  bool is_eof = input_->eof() || (input_->peek() == EOF);
+  return StreamReadResult(
+      StatusOr<std::string>(result.substr(0, result_read_count)), is_eof);
+}
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.h
new file mode 100644
index 0000000..f746f7c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/byte_stream_cpp.h	
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_CPP_H_
+#define FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_CPP_H_
+
+#include <istream>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/byte_stream.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class ByteStreamCpp : public ByteStream {
+ public:
+  explicit ByteStreamCpp(std::unique_ptr<std::istream> input)
+      : input_(std::move(input)) {
+  }
+
+  StreamReadResult ReadUntil(char delim, size_t max_length) override;
+  StreamReadResult Read(size_t max_length) override;
+
+ private:
+  /**
+   * Checks the states of `input_` and returns a `StreamReadResult` based on the
+   * states and the given `result` as the read result.
+   */
+  StreamReadResult ToReadResult(const std::string& result);
+
+  std::unique_ptr<std::istream> input_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_BYTE_STREAM_CPP_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.cc
new file mode 100644
index 0000000..296d5c4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.cc	
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/comparison.h"
+
+#include <algorithm>
+#include <cmath>
+#include <cstring>
+#include <limits>
+
+#include "absl/base/casts.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+using std::isnan;
+
+ComparisonResult Comparator<absl::string_view>::Compare(
+    absl::string_view left, absl::string_view right) const {
+  return ComparisonResultFromInt(left.compare(right));
+}
+
+ComparisonResult Comparator<std::string>::Compare(
+    const std::string& left, const std::string& right) const {
+  return ComparisonResultFromInt(left.compare(right));
+}
+
+ComparisonResult Comparator<double>::Compare(double left, double right) const {
+  // NaN sorts equal to itself and before any other number.
+  if (left < right) {
+    return ComparisonResult::Ascending;
+  } else if (left > right) {
+    return ComparisonResult::Descending;
+  } else if (left == right) {
+    return ComparisonResult::Same;
+  } else {
+    // One or both left and right is NaN.
+    if (!isnan(right)) {
+      // Only left is NaN.
+      return ComparisonResult::Ascending;
+    } else if (!isnan(left)) {
+      // Only right is NaN.
+      return ComparisonResult::Descending;
+    } else {
+      // Both are NaN.
+      return ComparisonResult::Same;
+    }
+  }
+}
+
+static constexpr double INT64_MIN_VALUE_AS_DOUBLE =
+    static_cast<double>(std::numeric_limits<int64_t>::min());
+
+static constexpr double INT64_MAX_VALUE_AS_DOUBLE =
+    static_cast<double>(std::numeric_limits<int64_t>::max());
+
+ComparisonResult CompareMixedNumber(double double_value, int64_t int64_value) {
+  // LLONG_MIN has an exact representation as double, so to check for a value
+  // outside the range representable by long, we have to check for strictly less
+  // than LLONG_MIN. Note that this also handles negative infinity.
+  if (double_value < INT64_MIN_VALUE_AS_DOUBLE) {
+    return ComparisonResult::Ascending;
+  }
+
+  // LLONG_MAX has no exact representation as double (casting as we've done
+  // makes 2^63, which is larger than LLONG_MAX), so consider any value greater
+  // than or equal to the threshold to be out of range. This also handles
+  // positive infinity.
+  if (double_value >= INT64_MAX_VALUE_AS_DOUBLE) {
+    return ComparisonResult::Descending;
+  }
+
+  // In Firestore NaN is defined to compare before all other numbers.
+  if (isnan(double_value)) {
+    return ComparisonResult::Ascending;
+  }
+
+  auto double_as_int64 = static_cast<int64_t>(double_value);
+  ComparisonResult cmp = Compare<int64_t>(double_as_int64, int64_value);
+  if (cmp != ComparisonResult::Same) {
+    return cmp;
+  }
+
+  // At this point the long representations are equal but this could be due to
+  // rounding.
+  auto int64_as_double = static_cast<double>(int64_value);
+  return Compare<double>(double_value, int64_as_double);
+}
+
+/** Helper to normalize a double and then return the raw bits as a uint64_t. */
+uint64_t DoubleBits(double d) {
+  if (isnan(d)) {
+    d = NAN;
+  }
+
+  return absl::bit_cast<uint64_t>(d);
+}
+
+bool DoubleBitwiseEquals(double left, double right) {
+  return DoubleBits(left) == DoubleBits(right);
+}
+
+size_t DoubleBitwiseHash(double d) {
+  uint64_t bits = DoubleBits(d);
+  // Note that x ^ (x >> 32) works fine for both 32 and 64 bit definitions of
+  // size_t
+  return static_cast<size_t>(bits) ^ static_cast<size_t>(bits >> 32);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.h
new file mode 100644
index 0000000..01092e5
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/comparison.h	
@@ -0,0 +1,386 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_COMPARISON_H_
+#define FIRESTORE_CORE_SRC_UTIL_COMPARISON_H_
+
+#if __OBJC__
+#import <Foundation/Foundation.h>
+#endif
+
+#include <sys/types.h>
+
+#include <cstdint>
+#include <functional>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/meta/type_traits.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * An enumeration describing the result of a three-way comparison among
+ * strongly-ordered values (i.e. where comparison between values always yields
+ * less-than, equal-to, or greater-than).
+ *
+ * This is equivalent to:
+ *
+ *   * NSComparisonResult from the iOS/macOS Foundation framework.
+ *   * std::strong_ordering from C++20
+ *
+ * The values of the constants are specifically chosen so as to make casting
+ * between this type and NSComparisonResult possible.
+ */
+enum class ComparisonResult {
+  /** The left hand side was less than the right. */
+  Ascending = -1,
+
+  /** The left hand side was equal to the right. */
+  Same = 0,
+
+  /** The left hand side was greater than the right. */
+  Descending = 1
+};
+
+constexpr bool Ascending(ComparisonResult result) noexcept {
+  return result == ComparisonResult::Ascending;
+}
+
+constexpr bool Same(ComparisonResult result) noexcept {
+  return result == ComparisonResult::Same;
+}
+
+constexpr bool Descending(ComparisonResult result) noexcept {
+  return result == ComparisonResult::Descending;
+}
+
+/**
+ * Creates a ComparisonResult from a typical integer return value, where
+ * 0 means "same", less than zero means "ascending", and greater than zero
+ * means "descending".
+ */
+constexpr ComparisonResult ComparisonResultFromInt(int value) {
+  // TODO(c++14): convert this to an if statement.
+  return value < 0 ? ComparisonResult::Ascending
+                   : (value > 0 ? ComparisonResult::Descending
+                                : ComparisonResult::Same);
+}
+
+/**
+ * Returns the reverse order (i.e. Ascending => Descending) etc.
+ */
+constexpr ComparisonResult ReverseOrder(ComparisonResult result) {
+  return static_cast<ComparisonResult>(-static_cast<int>(result));
+}
+
+#if __OBJC__
+/**
+ * Returns true if the given ComparisonResult and NSComparisonResult have the
+ * same integer values (at compile time).
+ */
+constexpr bool EqualValue(ComparisonResult lhs, NSComparisonResult rhs) {
+  return static_cast<int>(lhs) == static_cast<int>(rhs);
+}
+
+static_assert(EqualValue(ComparisonResult::Ascending, NSOrderedAscending),
+              "Ascending invalid");
+static_assert(EqualValue(ComparisonResult::Same, NSOrderedSame),
+              "Same invalid");
+static_assert(EqualValue(ComparisonResult::Descending, NSOrderedDescending),
+              "Descending invalid");
+
+/** Converts NSComparisonResult to ComparisonResult. */
+constexpr ComparisonResult MakeComparisonResult(NSComparisonResult value) {
+  return static_cast<ComparisonResult>(value);
+}
+
+/** Converts ComparisonResult to NSComparisonResult. */
+constexpr NSComparisonResult MakeNSComparisonResult(ComparisonResult value) {
+  return static_cast<NSComparisonResult>(value);
+}
+#endif  // __OBJC__
+
+/**
+ * A generalized comparator for types in Firestore, with ordering defined
+ * according to Firestore's semantics.
+ *
+ * How a given type is compared depends on the type itself:
+ *
+ *   - (Objective-C++-only) If T* is an Objective-C object pointer then
+ *     invokes the `-compare:` member. Note that if T does not actually define
+ *     `-compare:` this will fail. This is unconditional this way because no
+ *     other alternative is valid for pointer types.
+ *
+ *   - If T defines a `CompareTo(T) const` member function, then Compare will
+ *     invoke `lhs.CompareTo(rhs)`.
+ *
+ *   - Otherwise, invokes `DefaultCompare(lhs, rhs)`.
+ */
+template <typename T>
+struct Comparator;
+
+template <typename T>
+struct DefaultComparator {
+  ComparisonResult Compare(const T& left, const T& right) const {
+    if (left < right) {
+      return ComparisonResult::Ascending;
+    } else if (right < left) {
+      return ComparisonResult::Descending;
+    } else {
+      return ComparisonResult::Same;
+    }
+  }
+};
+
+/** Compares two strings. */
+template <>
+struct Comparator<absl::string_view> {
+  ComparisonResult Compare(absl::string_view left,
+                           absl::string_view right) const;
+};
+
+template <>
+struct Comparator<std::string> {
+  Comparator() = default;
+  // GCC 4.8.5 has trouble implicitly generating copy operations (`=default`
+  // doesn't work as well).
+  Comparator(const Comparator&) {
+  }
+  Comparator& operator=(const Comparator&) {
+    return *this;
+  }
+
+  ComparisonResult Compare(const std::string& left,
+                           const std::string& right) const;
+};
+
+/** Compares two bools: false < true. */
+template <>
+struct Comparator<bool> : public DefaultComparator<bool> {};
+
+/** Compares two int32_t. */
+template <>
+struct Comparator<int32_t> : public DefaultComparator<int32_t> {};
+
+/** Compares two int64_t. */
+template <>
+struct Comparator<int64_t> : public DefaultComparator<int64_t> {};
+
+/** Compares two doubles (using Firestore semantics for NaN). */
+template <>
+struct Comparator<double> {
+  ComparisonResult Compare(double left, double right) const;
+};
+
+/**
+ * Perform a three-way comparison between the left and right values using
+ * the appropriate Comparator for the values based on their type.
+ *
+ * Essentially a shortcut for Comparator<T>().Compare(left, right), where
+ * Comparator<T> is default constructible.
+ */
+template <typename T, typename C = Comparator<T>>
+ComparisonResult Compare(const T& left,
+                         const T& right,
+                         const C& comparator = C()) {
+  return comparator.Compare(left, right);
+}
+
+#if __OBJC__
+/**
+ * Performs a three-way comparison, identically to Compare, but converts the
+ * result to an NSComparisonResult.
+ *
+ * This function exists for interoperation with Objective-C++ and should
+ * eventually be removed.
+ */
+template <typename T>
+inline NSComparisonResult WrapCompare(const T& left, const T& right) {
+  return MakeNSComparisonResult(Compare<T>(left, right));
+}
+#endif  // __OBJC__
+
+namespace impl {
+
+/**
+ * Checks wither the type T has a `CompareTo` member.
+ */
+template <typename T, typename = absl::void_t<>>
+struct has_compare_to : public std::false_type {};
+
+template <typename T>
+struct has_compare_to<
+    T,
+    absl::void_t<decltype(std::declval<T>().CompareTo(std::declval<T>()))>>
+    : public std::true_type {};
+
+/**
+ * Implements ranked choice among overloads below.
+ */
+template <int I>
+struct CompareChoice : CompareChoice<I + 1> {};
+
+template <>
+struct CompareChoice<2> {};
+
+// Use a `CompareTo` member, if available
+template <typename T, typename = absl::enable_if_t<has_compare_to<T>::value>>
+ComparisonResult CompareImpl(const T& lhs, const T& rhs, CompareChoice<1>) {
+  return lhs.CompareTo(rhs);
+}
+
+// Otherwise, fall back on less than.
+template <typename T, typename = void>
+ComparisonResult CompareImpl(const T& lhs, const T& rhs, CompareChoice<2>) {
+  DefaultComparator<T> comparator;
+  return comparator.Compare(lhs, rhs);
+}
+
+}  // namespace impl
+
+template <typename T>
+struct Comparator {
+  ComparisonResult Compare(const T& lhs, const T& rhs) const {
+    return impl::CompareImpl(lhs, rhs, impl::CompareChoice<0>{});
+  }
+};
+
+/**
+ * A Comparator whose behavior is defined by a std::function.
+ */
+template <typename T>
+class FunctionComparator {
+ public:
+  using ComparisonFunction =
+      std::function<ComparisonResult(const T&, const T&)>;
+
+  explicit FunctionComparator(ComparisonFunction&& function)
+      : function_(std::move(function)) {
+  }
+
+  ComparisonResult Compare(const T& lhs, const T& rhs) const {
+    return function_(lhs, rhs);
+  }
+
+ private:
+  ComparisonFunction function_;
+};
+
+template <typename T>
+ComparisonResult CompareContainer(const T& lhs, const T& rhs) {
+  auto lhs_iter = lhs.begin();
+  auto lhs_end = lhs.end();
+  auto rhs_iter = rhs.begin();
+  auto rhs_end = rhs.end();
+
+  while (lhs_iter != lhs_end && rhs_iter != rhs_end) {
+    ComparisonResult cmp = Compare(*lhs_iter, *rhs_iter);
+    if (!Same(cmp)) return cmp;
+
+    ++lhs_iter;
+    ++rhs_iter;
+  }
+
+  if (rhs_iter != rhs_end) return ComparisonResult::Ascending;
+  if (lhs_iter != lhs_end) return ComparisonResult::Descending;
+  return ComparisonResult::Same;
+}
+
+/** Compares a double and an int64_t. */
+ComparisonResult CompareMixedNumber(double double_value, int64_t int64_value);
+
+/** Normalizes a double and then return the raw bits as a uint64_t. */
+uint64_t DoubleBits(double d);
+
+/**
+ * Compares the bitwise representation of two doubles, but normalizes NaN
+ * values. This is similar to what the backend and android clients do, including
+ * comparing -0.0 as not equal to 0.0.
+ */
+bool DoubleBitwiseEquals(double left, double right);
+
+/**
+ * Computes a bitwise hash of a double, but normalizes NaN values, suitable for
+ * use when using DoubleBitwiseEquals for equality.
+ */
+size_t DoubleBitwiseHash(double d);
+
+/**
+ * A mixin that defines all six relational operators for a type T in terms of a
+ * CompareTo() member.
+ *
+ * @tparam T The type that should get comparison operators.
+ */
+template <typename T>
+class Comparable {
+ public:
+  friend bool operator==(const T& lhs, const T& rhs) {
+    return Same(lhs.CompareTo(rhs));
+  }
+  friend bool operator!=(const T& lhs, const T& rhs) {
+    return !(lhs == rhs);
+  }
+  friend bool operator<(const T& lhs, const T& rhs) {
+    return Ascending(lhs.CompareTo(rhs));
+  }
+  friend bool operator>(const T& lhs, const T& rhs) {
+    return Descending(lhs.CompareTo(rhs));
+  }
+  friend bool operator<=(const T& lhs, const T& rhs) {
+    return !(rhs < lhs);
+  }
+  friend bool operator>=(const T& lhs, const T& rhs) {
+    return !(lhs < rhs);
+  }
+};
+
+/**
+ * Same as `Comparable`, but deliberately not defining `operator==`, which
+ * instead is left for the class inheriting from this mixin to implement. This
+ * is an optimization that avoids doing an extra comparison when comparing for
+ * equality (`Comparable` would have to check for both "less-than" and
+ * "greater-than" to determine whether two values are equal).
+ */
+template <typename T>
+class InequalityComparable {
+ public:
+  friend bool operator!=(const T& lhs, const T& rhs) {
+    return !(lhs == rhs);
+  }
+  friend bool operator<(const T& lhs, const T& rhs) {
+    return Ascending(lhs.CompareTo(rhs));
+  }
+  friend bool operator>(const T& lhs, const T& rhs) {
+    return Descending(lhs.CompareTo(rhs));
+  }
+  friend bool operator<=(const T& lhs, const T& rhs) {
+    return !(rhs < lhs);
+  }
+  friend bool operator>=(const T& lhs, const T& rhs) {
+    return !(lhs < rhs);
+  }
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_COMPARISON_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/compressed_member.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/compressed_member.h
new file mode 100644
index 0000000..20bdad3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/compressed_member.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_COMPRESSED_MEMBER_H_
+#define FIRESTORE_CORE_SRC_UTIL_COMPRESSED_MEMBER_H_
+
+#include <type_traits>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * A numbered member of some other class that implements the empty
+ * base optimization. This makes it possible to hold a value of an
+ * empty type without using any space.
+ *
+ * Use by inheriting privately from CompressedMember.
+ */
+template <typename T, int position = 0, bool = std::is_empty<T>::value>
+class CompressedMember : private T {
+ public:
+  CompressedMember() = default;
+  explicit CompressedMember(const T& t) : T(t) {
+  }
+  explicit CompressedMember(T&& t) : T(std::move(t)) {
+  }
+
+  T& get() noexcept {
+    return *this;
+  }
+  const T& get() const noexcept {
+    return *this;
+  }
+};
+
+/**
+ * Specialization of CompressedMember for the case where the type T
+ * is non-empty.
+ */
+template <typename T, int position>
+class CompressedMember<T, position, false> {
+ public:
+  CompressedMember() = default;
+  explicit CompressedMember(const T& t) : value_(t) {
+  }
+  explicit CompressedMember(T&& t) : value_(std::move(t)) {
+  }
+
+  T& get() noexcept {
+    return value_;
+  }
+  const T& get() const noexcept {
+    return value_;
+  }
+
+ private:
+  T value_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_COMPRESSED_MEMBER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/config.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/config.h
new file mode 100644
index 0000000..a03227b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/config.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_CONFIG_H_
+#define FIRESTORE_CORE_SRC_UTIL_CONFIG_H_
+
+// This header provides static definitions of platform configuration values for
+// build systems that cannot auto-detect their current configuration. This
+// includes both CocoaPods and Swift Package Manager.
+//
+// CMake builds are not handled here. See `config_detected.h.in` for the
+// template used by CMake when detecting the availability of platform features.
+
+#if defined(__has_include)
+#if __has_include("Firestore/core/src/util/config_detected.h")
+#define FIRESTORE_HAVE_CONFIG_DETECTED_H 1
+#endif
+#endif  // defined(__has_include)
+
+#if defined(FIRESTORE_HAVE_CONFIG_DETECTED_H)
+// If FIRESTORE_HAVE_CONFIG_DETECTED_H is defined, assume the configuration is
+// correct. You can define FIRESTORE_HAVE_CONFIG_DETECTED_H=0 to configure the
+// correct HAVE_ values via the compiler command-line.
+#if FIRESTORE_HAVE_CONFIG_DETECTED_H
+#include "Firestore/core/src/util/config_detected.h"
+#endif
+
+#elif __APPLE__ && (SWIFT_PACKAGE || COCOAPODS)
+// Swift Package Manager does not support configure-time feature testing and
+// does not support source transformations of any kind so we can't cheat by
+// running a sed command to generate config.h before building.
+//
+// Handle CocoaPods the same way since the settings are the same.
+#define HAVE_ARC4RANDOM 1
+#define HAVE_LIBDISPATCH 1
+
+#elif __linux__ && SWIFT_PACKAGE
+#define HAVE_OPENSSL_RAND_H 1
+
+#else
+#error "Unknown build configuration"
+#endif  // FIRESTORE_HAVE_CONFIG_DETECTED_H
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_CONFIG_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/defer.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/defer.h
new file mode 100644
index 0000000..8782548
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/defer.h	
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_DEFER_H_
+#define FIRESTORE_CORE_SRC_UTIL_DEFER_H_
+
+#include <functional>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Creates a deferred action object that will execute the given `action` when
+ * the `Defer` object is destroyed at the close of the lexical scope containing
+ * it. You must declare a local variable of type `Defer` for it to have any
+ * useful effect; otherwise the `Defer` is destroyed at the end of the
+ * statement, which is equivalent to just directly running the `action`.
+ *
+ * `Defer` is useful for performing ad-hoc RAII-style actions, without having
+ * to create the wrapper class. For example:
+ *
+ *     FILE* file = fopen(filename, "rb");
+ *     Defer cleanup([&] {
+ *       if (file) {
+ *         fclose(file);
+ *       }
+ *     });
+ */
+class Defer {
+  // TODO(C++17): Make Action a template argument and use CTAD in the callers.
+ public:
+  using Action = std::function<void()>;
+
+  /**
+   * Constructs a `Defer` object.
+   *
+   * @param action a callable object; usually a lambda. Even if exceptions are
+   *     enabled, when `action` is invoked it must not throw. This is similar
+   *     to the restriction that exists on destructors generally.
+   */
+  explicit Defer(Action&& action) : action_(std::move(action)) {
+  }
+
+  ~Defer() {
+    action_();
+  }
+
+  // Defer can be neither copied nor moved.
+  Defer(const Defer&) = delete;
+  Defer& operator=(const Defer&) = delete;
+
+ private:
+  Action action_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_DEFER_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/delayed_constructor.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/delayed_constructor.h
new file mode 100644
index 0000000..1a6240c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/delayed_constructor.h	
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_DELAYED_CONSTRUCTOR_H_
+#define FIRESTORE_CORE_SRC_UTIL_DELAYED_CONSTRUCTOR_H_
+
+#include <type_traits>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// DelayedConstructor<T> is a wrapper around an object of type T that
+//
+//   * stores the object of type T inline inside DelayedConstructor<T>;
+//   * initially does not call T's constructor, leaving storage uninitialized;
+//   * calls the constructor when you call Init();
+//   * provides access to the object of type T like a pointer via ->, *, and
+//     get(); and
+//   * calls T's destructor as usual.
+//
+// This is useful for embedding objects of type T inside Objective-C objects
+// when T has no default constructor.
+//
+// Objective-C separates allocation from initialization which is different from
+// the way C++ does it. A C++ object embedded in an Objective-C object is
+// normally default constructed then assigned a value later. This doesn't work
+// for classes that have no default constructor.
+//
+// DelayedConstructor does not count or otherwise check that Init is only
+// called once. For best results call Init() from the Objective-C class's
+// designated initializer.
+//
+// Note that DelayedConstructor makes no guarantees about the state of the
+// storage backing it before Init() is called. However, Objective-C objects are
+// zero filled during allocation, so as a member of an Objective-C object, the
+// default state will be zero-filled.
+//
+// Normally this doesn't matter, but DelayedConstructor unconditionally invokes
+// T's destructor, even if you don't call Init(). This may cause problems in
+// Objective-C classes where the initializer is designed to return an instance
+// other than self. It's best to avoid such instance switching techniques in
+// combination with DelayedConstructor, but it is possible: either ensure that
+// T's destructor handles the zero-filled case correctly, or call Init() before
+// switching instances.
+template <typename T>
+class DelayedConstructor {
+ public:
+  typedef T element_type;
+
+  DelayedConstructor() = default;
+
+  /**
+   * Forwards arguments to the T's constructor: calls T(args...).
+   *
+   * This overload is disabled when it might collide with copy/move.
+   */
+  template <typename... Ts,
+            typename std::enable_if<
+                !std::is_same<void(typename std::decay<Ts>::type...),
+                              void(DelayedConstructor)>::value,
+                int>::type = 0>
+  void Init(Ts&&... args) {
+    new (&space_.value) T(std::forward<Ts>(args)...);
+  }
+
+  /**
+   * Forwards copy and move construction for T.
+   */
+  void Init(const T& x) {
+    new (&space_.value) T(x);
+  }
+  void Init(T&& x) {
+    new (&space_.value) T(std::move(x));
+  }
+
+  // No copying.
+  DelayedConstructor(const DelayedConstructor&) = delete;
+  DelayedConstructor& operator=(const DelayedConstructor&) = delete;
+
+  // Pretend to be a smart pointer to T.
+  T& operator*() {
+    return *get();
+  }
+  T* operator->() {
+    return get();
+  }
+  T* get() {
+    return &space_.value;
+  }
+  const T& operator*() const {
+    return *get();
+  }
+  const T* operator->() const {
+    return get();
+  }
+  const T* get() const {
+    return &space_.value;
+  }
+
+ private:
+  union Space {
+    /** Default constructor does nothing. */
+    Space() {
+    }
+    ~Space() {
+      value.~T();
+    }
+    char empty;
+    T value;
+  } space_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_DELAYED_CONSTRUCTOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/empty.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/empty.h
new file mode 100644
index 0000000..825768c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/empty.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EMPTY_H_
+#define FIRESTORE_CORE_SRC_UTIL_EMPTY_H_
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Used to represent an empty value.
+ */
+struct Empty {
+  friend bool operator==(Empty /* left */, Empty /* right */) {
+    return true;
+  }
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EMPTY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/equality.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/equality.h
new file mode 100644
index 0000000..a068958
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/equality.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EQUALITY_H_
+#define FIRESTORE_CORE_SRC_UTIL_EQUALITY_H_
+
+#include <memory>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Checks if the values pointed to by two C++ pointers are equal. Two null
+ * pointers are also considered equal.
+ */
+template <typename T>
+bool Equals(const T& lhs, const T& rhs) {
+  return lhs == nullptr ? rhs == nullptr : rhs != nullptr && *lhs == *rhs;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EQUALITY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.h
new file mode 100644
index 0000000..82ccb0d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.h	
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_ERROR_APPLE_H_
+#define FIRESTORE_CORE_SRC_UTIL_ERROR_APPLE_H_
+
+// Everything in this header exists for compatibility with Objective-C.
+#if __OBJC__
+
+#import <Foundation/Foundation.h>
+
+#include <functional>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/strings/string_view.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+// The Cloud Firestore error domain. Keep in sync with FIRFirestoreErrors.h.
+// Exposed here to make it possible to build in CMake without bringing in the
+// sources under Firestore/Source.
+// clang-format off
+// clang-format12 merges the next two lines.
+FOUNDATION_EXPORT NSString* const FIRFirestoreErrorDomain
+    NS_SWIFT_NAME(FirestoreErrorDomain);
+// clang-format on
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Translates a set of error_code and error_msg to an NSError.
+NSError* MakeNSError(Error error_code,
+                     const absl::string_view error_msg,
+                     NSError* cause = nil);
+
+NSError* MakeNSError(const util::Status& status);
+
+Status MakeStatus(NSError* error);
+
+using VoidErrorBlock = void (^)(NSError* _Nullable error);
+
+util::StatusCallback MakeCallback(VoidErrorBlock _Nullable block);
+
+template <typename T>
+using VoidValueErrorBlock = void (^)(T _Nullable value,
+                                     NSError* _Nullable error);
+
+template <typename T>
+util::StatusOrCallback<T> MakeCallback(VoidValueErrorBlock<T> _Nullable block) {
+  if (block) {
+    return [block](StatusOr<T> maybe_value) {
+      if (maybe_value.ok()) {
+        block(std::move(maybe_value).ValueOrDie(), nil);
+      } else {
+        block(nil, MakeNSError(std::move(maybe_value).status()));
+      }
+    };
+  } else {
+    return [](StatusOr<T> maybe_value) { (void)maybe_value; };
+  }
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
+
+#endif  // __OBJC__
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_ERROR_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.mm
new file mode 100644
index 0000000..22aca38
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/error_apple.mm	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/error_apple.h"
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+// NB: This is also declared in
+// FirebaseFirestore/Firestore/Source/Public/FIRFirestoreErrors.h
+// NOLINTNEXTLINE: public constant
+FOUNDATION_EXPORT NSString* const FIRFirestoreErrorDomain =
+    @"FIRFirestoreErrorDomain";
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Translates a set of error_code and error_msg to an NSError.
+NSError* MakeNSError(Error error_code,
+                     absl::string_view error_msg,
+                     NSError* cause) {
+  if (error_code == Error::kErrorOk) {
+    return nil;
+  }
+
+  NSMutableDictionary<NSString*, id>* user_info =
+      [NSMutableDictionary dictionary];
+  user_info[NSLocalizedDescriptionKey] = MakeNSString(error_msg);
+  if (cause) {
+    user_info[NSUnderlyingErrorKey] = cause;
+  }
+
+  return [NSError errorWithDomain:FIRFirestoreErrorDomain
+                             code:static_cast<NSInteger>(error_code)
+                         userInfo:user_info];
+}
+
+NSError* MakeNSError(const util::Status& status) {
+  return status.ToNSError();
+}
+
+util::StatusCallback MakeCallback(VoidErrorBlock _Nullable block) {
+  if (block) {
+    return [block](Status status) { block(MakeNSError(status)); };
+  } else {
+    return [](Status status) { (void)status; };
+  }
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.cc
new file mode 100644
index 0000000..c6b39d0
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.cc	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/exception.h"
+
+#include <exception>
+#include <stdexcept>
+
+#include "Firestore/core/src/util/firestore_exceptions.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+const char* ExceptionName(ExceptionType exception) {
+  switch (exception) {
+    case ExceptionType::AssertionFailure:
+      return "FIRESTORE INTERNAL ASSERTION FAILED";
+    case ExceptionType::IllegalState:
+      return "Illegal state";
+    case ExceptionType::InvalidArgument:
+      return "Invalid argument";
+  }
+  UNREACHABLE();
+}
+
+ABSL_ATTRIBUTE_NORETURN void DefaultThrowHandler(ExceptionType type,
+                                                 const char* file,
+                                                 const char* func,
+                                                 int line,
+                                                 const std::string& message) {
+  std::string what = absl::StrCat(ExceptionName(type), ": ");
+  if (file && func) {
+    absl::StrAppend(&what, file, "(", line, ") ", func, ": ");
+  }
+  absl::StrAppend(&what, message);
+
+  // Always log the error -- it helps if there are any issues with the exception
+  // propagation mechanism and also makes sure the exception makes it into the
+  // log regardless of how it's handled.
+  LOG_ERROR("%s", what);
+
+#if ABSL_HAVE_EXCEPTIONS
+  switch (type) {
+    case ExceptionType::AssertionFailure:
+      throw FirestoreInternalError(what);
+    case ExceptionType::IllegalState:
+      // Omit descriptive text since the type already encodes the kind of error.
+      throw std::logic_error(message);
+    case ExceptionType::InvalidArgument:
+      // Omit descriptive text since the type already encodes the kind of error.
+      throw std::invalid_argument(message);
+  }
+#else
+  std::terminate();
+#endif
+
+  UNREACHABLE();
+}
+
+ThrowHandler throw_handler = DefaultThrowHandler;
+
+}  // namespace
+
+ThrowHandler SetThrowHandler(ThrowHandler handler) {
+  ThrowHandler previous = throw_handler;
+  throw_handler = handler;
+  return previous;
+}
+
+ABSL_ATTRIBUTE_NORETURN void Throw(ExceptionType exception,
+                                   const char* file,
+                                   const char* func,
+                                   int line,
+                                   const std::string& message) {
+  throw_handler(exception, file, func, line, message);
+
+  // It's expected that the throw handler above does not return. If it does,
+  // just terminate.
+  std::terminate();
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.h
new file mode 100644
index 0000000..70c1a08
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception.h	
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EXCEPTION_H_
+#define FIRESTORE_CORE_SRC_UTIL_EXCEPTION_H_
+
+// Routines in this file are used to throw an exception (or crash, depending on
+// platform) in response to API usage errors. Exceptions should only be used
+// for programmer errors made by consumers of the SDK, e.g. invalid method
+// arguments.
+//
+// These routines avoid conditional compilation in the caller and avoids lint
+// warnings around actually throwing exceptions in source. The implementation
+// chooses the best way to surface a logic error to the developer.
+//
+// For recoverable runtime errors, use util::Status, or in pure Objective-C
+// code use an NSError** out-parameter.
+//
+// For internal programming errors, including internal argument checking, use
+// HARD_ASSERT or HARD_FAIL().
+
+#include <stdexcept>
+#include <string>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * An enumeration of logical exception types mapping to common user visible
+ * exceptions we might throw in response do some invalid action in an
+ * interaction with the Firestore API.
+ */
+enum class ExceptionType {
+  AssertionFailure,
+  IllegalState,
+  InvalidArgument,
+};
+
+using ThrowHandler = void (*)(ExceptionType type,
+                              const char* file,
+                              const char* func,
+                              int line,
+                              const std::string& message);
+
+/**
+ * Overrides the default exception throw handler.
+ *
+ * The default essentially just calls std::terminate. While reasonable for C++
+ * with exceptions disabled, this isn't optimal for platforms that merely use
+ * the C++ core as their implementation and would otherwise be expected to throw
+ * a platform specific exception.
+ *
+ * @param handler A function that will handle the exception. This function is
+ *     expected not to return. (If it does, std::terminate() will be called
+ *     immediately after it does so.)
+ * @return A pointer to the previous failure handler.
+ */
+ThrowHandler SetThrowHandler(ThrowHandler handler);
+
+ABSL_ATTRIBUTE_NORETURN void Throw(ExceptionType type,
+                                   const char* file,
+                                   const char* func,
+                                   int line,
+                                   const std::string& message);
+
+/**
+ * Throws an exception indicating that the user passed an invalid argument.
+ *
+ * Invalid argument is interpreted pretty broadly and can mean that the user
+ * made an incompatible chained method call while building up a larger
+ * structure, like a query.
+ */
+template <typename... FA>
+ABSL_ATTRIBUTE_NORETURN void ThrowInvalidArgument(const char* format,
+                                                  const FA&... args) {
+  Throw(ExceptionType::InvalidArgument, nullptr, nullptr, 0,
+        StringFormat(format, args...));
+}
+
+/**
+ * Throws an exception that indicates the user has attempted to use an API
+ * that's in an illegal state, usually by violating a precondition of the API
+ * call.
+ *
+ * Good uses of these are things like using a write batch after committing or
+ * trying to use Firestore without initializing FIRApp. Builder-style APIs that
+ * haven't done anything yet should likely just stick to ThrowInvalidArgument.
+ */
+template <typename... FA>
+ABSL_ATTRIBUTE_NORETURN void ThrowIllegalState(const char* format,
+                                               const FA&... args) {
+  Throw(ExceptionType::IllegalState, nullptr, nullptr, 0,
+        StringFormat(format, args...));
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EXCEPTION_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.h
new file mode 100644
index 0000000..1967e0c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.h	
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EXCEPTION_APPLE_H_
+#define FIRESTORE_CORE_SRC_UTIL_EXCEPTION_APPLE_H_
+
+#include <string>
+
+#include "Firestore/core/src/util/exception.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Default throw handler for ObjC/Swift. Typically shouldn't be used directly.
+ */
+ABSL_ATTRIBUTE_NORETURN void ObjcThrowHandler(ExceptionType type,
+                                              const char* file,
+                                              const char* func,
+                                              int line,
+                                              const std::string& message);
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EXCEPTION_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.mm
new file mode 100644
index 0000000..1f80eaa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/exception_apple.mm	
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/exception_apple.h"
+
+#import <Foundation/Foundation.h>
+
+#include <exception>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/string_apple.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+NSString* ExceptionName(ExceptionType exception) {
+  switch (exception) {
+    case ExceptionType::AssertionFailure:
+      return @"FIRESTORE INTERNAL ASSERTION FAILED";
+    case ExceptionType::IllegalState:
+      return @"FIRIllegalStateException";
+    case ExceptionType::InvalidArgument:
+      return @"FIRInvalidArgumentException";
+  }
+  UNREACHABLE();
+}
+
+NSException* MakeException(ExceptionType type, const std::string& message) {
+  return [[NSException alloc] initWithName:ExceptionName(type)
+                                    reason:MakeNSString(message)
+                                  userInfo:nil];
+}
+
+}  // namespace
+
+ABSL_ATTRIBUTE_NORETURN void ObjcThrowHandler(ExceptionType type,
+                                              const char* file,
+                                              const char* func,
+                                              int line,
+                                              const std::string& message) {
+  if (type == ExceptionType::AssertionFailure) {
+    [[NSAssertionHandler currentHandler]
+        handleFailureInFunction:MakeNSString(func)
+                           file:MakeNSString(file)
+                     lineNumber:line
+                    description:@"%@: %@", ExceptionName(type),
+                                MakeNSString(message)];
+    std::terminate();
+  } else {
+    @throw MakeException(type, message);  // NOLINT
+  }
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor.h
new file mode 100644
index 0000000..9f58f63
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor.h	
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EXECUTOR_H_
+#define FIRESTORE_CORE_SRC_UTIL_EXECUTOR_H_
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <functional>
+#include <memory>
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class DelayedOperation;
+class Task;
+
+// An interface to a platform-specific executor of asynchronous operations
+// (called tasks on other platforms).
+//
+// Operations may be scheduled for immediate or delayed execution. Operations
+// delayed until the exact same time are scheduled in FIFO order.
+//
+// The operations are executed sequentially; only a single operation is executed
+// at any given time.
+//
+// Delayed operations may be cancelled if they have not already been run.
+class Executor {
+ public:
+  // An opaque name for a kind of operation. All operations of the same type
+  // should share a tag.
+  using Tag = int;
+  static constexpr Tag kNoTag = -1;
+
+  // An opaque, monotonically increasing identifier for each operation that does
+  // not depend on its address. Whereas the `Tag` identifies the kind of
+  // operation, the `Id` identifies the specific instance.
+  using Id = uint32_t;
+  using Operation = std::function<void()>;
+
+  using Milliseconds = std::chrono::milliseconds;
+  using Clock = std::chrono::steady_clock;
+  using TimePoint = std::chrono::time_point<Clock, Milliseconds>;
+
+  // Creates a new serial Executor of the platform-appropriate type, and gives
+  // it the given label, if the implementation supports it.
+  //
+  // Note that this method has multiple definitions, depending on the platform.
+  static std::unique_ptr<Executor> CreateSerial(const char* label);
+
+  // Creates a new concurrent Executor of the platform-appropriate type, with
+  // at least the given number of threads, and gives it the given label, if the
+  // implementation supports it.
+  //
+  // Note that this method has multiple definitions, depending on the platform.
+  static std::unique_ptr<Executor> CreateConcurrent(const char* label,
+                                                    int threads);
+
+  virtual ~Executor() = default;
+
+  // Explicitly destroy this Executor, canceling pending tasks, and waiting for
+  // any tasks that are currently running.
+  //
+  // Dispose exists as a separate step to facilitate a leaf-first destruction
+  // order. Normally the root-most object in a hierarchy runs its destructor and
+  // then the objects that make it up are destroyed. If tasks referring to the
+  // root were running while the Executor's destructor is running, there would
+  // be no way for it to prevent those tasks from referring to a partially
+  // destroyed root. By calling `Dispose` in its destructor, the root-most
+  // object prevents any tasks from running that could observe a partially
+  // destroyed object graph.
+  //
+  // Requirements for implementors:
+  //   * Dispose implementations must be idempotent.
+  //   * Dispose implementations must exclude concurrent execution of other
+  //     methods.
+  //   * Once Dispose has started, other Executor methods that accept new work
+  //     must silently reject that work.
+  //   * Destructors should call Dispose.
+  virtual void Dispose() = 0;
+
+  // Schedules the `operation` to be asynchronously executed as soon as
+  // possible, in FIFO order.
+  virtual void Execute(Operation&& operation) = 0;
+  // Like `Execute`, but blocks until the `operation` finishes, consequently
+  // draining immediate operations from the executor.
+  virtual void ExecuteBlocking(Operation&& operation) = 0;
+
+  // Scheduled the given `operation` to be executed after `delay` milliseconds
+  // from now, and returns a handle that allows to cancel the operation
+  // (provided it hasn't been run already).
+  //
+  // Operations scheduled for future execution have an opaque tag. The value of
+  // the tag is ignored by the executor but can be used to find operations with
+  // a given tag after they are scheduled.
+  //
+  // `delay` must be non-negative; use `Execute` to schedule operations for
+  // immediate execution.
+  virtual DelayedOperation Schedule(Milliseconds delay,
+                                    Tag tag,
+                                    Operation&& operation) = 0;
+
+  // Checks for the caller whether it is being invoked by this executor.
+  virtual bool IsCurrentExecutor() const = 0;
+  // Returns some sort of an identifier for the current execution context. The
+  // only guarantee is that it will return different values depending on whether
+  // this function is invoked by this executor or not.
+  virtual std::string CurrentExecutorName() const = 0;
+  // Like `CurrentExecutorName`, but returns an identifier for this executor,
+  // whether the caller code currently runs on this executor or not.
+  virtual std::string Name() const = 0;
+
+  // Checks whether an operation tagged with the given `tag` is currently
+  // scheduled for future execution.
+  virtual bool IsTagScheduled(Tag tag) const = 0;
+  virtual bool IsIdScheduled(Id id) const = 0;
+
+  // Removes the nearest due scheduled operation from the schedule and returns
+  // it to the caller.
+  //
+  // Only operations scheduled for delayed execution can be removed with this
+  // method; immediate operations don't count. If no such operations are
+  // currently scheduled, `nullptr` is returned.
+  //
+  // The caller is responsible for either executing or cancelling (and
+  // releasing) the returned Task.
+  virtual Task* PopFromSchedule() = 0;
+
+ private:
+  // Mark a task completed, removing it from any internal schedule or tracking.
+  // Called by Task once it has completed execution.
+  virtual void OnCompletion(Task* task) = 0;
+  friend class Task;
+
+  // If the operation hasn't yet been run, it will be removed from the queue.
+  // Otherwise, this function is a no-op.
+  //
+  // Called by `DelayedOperation` when its user calls `Cancel`. Implementations
+  // of `Cancel` should also `Dispose` the underlying `Task` to actually prevent
+  // execution.
+  virtual void Cancel(Id operation_id) = 0;
+  friend class DelayedOperation;
+};
+
+// A handle to an operation scheduled for future execution. The handle may
+// outlive the operation, but it *cannot* outlive the executor that created it.
+class DelayedOperation {
+ public:
+  // Creates an empty `DelayedOperation` not associated with any actual
+  // operation. Calling `Cancel` on it is a no-op.
+  DelayedOperation() = default;
+
+  // Returns whether this `DelayedOperation` is associated with an actual
+  // operation.
+  explicit operator bool() const {
+    return executor_ && executor_->IsIdScheduled(id_);
+  }
+
+  // If the operation has not been run yet, cancels the operation. Otherwise,
+  // this function is a no-op.
+  void Cancel() {
+    if (executor_) {
+      executor_->Cancel(id_);
+    }
+  }
+
+  // Internal use only.
+  explicit DelayedOperation(Executor* executor, Executor::Id id)
+      : executor_(executor), id_(id) {
+  }
+
+ private:
+  Executor* executor_ = nullptr;
+  Executor::Id id_ = 0;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EXECUTOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.h
new file mode 100644
index 0000000..1fe1dc9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.h	
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EXECUTOR_LIBDISPATCH_H_
+#define FIRESTORE_CORE_SRC_UTIL_EXECUTOR_LIBDISPATCH_H_
+
+#include <dispatch/dispatch.h>
+
+#include <chrono>              // NOLINT(build/c++11)
+#include <condition_variable>  // NOLINT(build/c++11)
+#include <functional>
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+
+#include "Firestore/core/src/util/executor.h"
+#include "absl/strings/string_view.h"
+
+#if !defined(__OBJC__)
+// `dispatch_queue_t` gets defined to different types when compiled in C++ or
+// Objective-C mode. Source files including this header should all be compiled
+// in the same mode to avoid linker errors.
+#error "This header only supports Objective-C++ (see comment for more info)."
+#endif  // !defined(__OBJC__)
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// A serial queue built on top of libdispatch. The operations are run on
+// a dedicated serial dispatch queue.
+class ExecutorLibdispatch : public Executor {
+ public:
+  explicit ExecutorLibdispatch(dispatch_queue_t dispatch_queue);
+  ~ExecutorLibdispatch() override;
+
+  void Dispose() override;
+
+  bool IsCurrentExecutor() const override;
+  std::string CurrentExecutorName() const override;
+  std::string Name() const override;
+
+  void Execute(Operation&& operation) override;
+  void ExecuteBlocking(Operation&& operation) override;
+  DelayedOperation Schedule(Milliseconds delay,
+                            Tag tag,
+                            Operation&& operation) override;
+
+  bool IsTagScheduled(Tag tag) const override;
+  bool IsIdScheduled(Id id) const override;
+  Task* PopFromSchedule() override;
+
+  dispatch_queue_t dispatch_queue() const {
+    return dispatch_queue_;
+  }
+
+ private:
+  using ScheduleMap = std::unordered_map<Id, Task*>;
+  using ScheduleEntry = ScheduleMap::value_type;
+
+  void OnCompletion(Task* task) override;
+  void Cancel(Id operation_id) override;
+
+  static void InvokeAsync(void* raw_task);
+  static void InvokeSync(void* raw_task);
+
+  Id NextIdLocked();
+
+  // A mutex controlling the executor's internal state. Avoid holding this
+  // while making calls into tasks, which could trigger callbacks into this
+  // executor, causing a deadlock.
+  mutable std::mutex mutex_;
+
+  dispatch_queue_t dispatch_queue_;
+
+  // A map of `Schedule`d tasks by their Id, allowing `Cancel` to be able to
+  // find tasks quickly.
+  ScheduleMap schedule_;
+
+  // The set of all tasks managed by this executor, including those from
+  // `Execute`, `ExecuteBlocking`, and `Schedule`.
+  //
+  // libdispatch doesn't provide a way to cancel a scheduled operation, so once
+  // a `Task` is created, it will always stay in the schedule until the time is
+  // past. `Task`s internally track their own state and the executor may cancel
+  // them instead. This means that by the time libdispatch attempts to execute a
+  // a particular operation, the `Task` may already have been executed or
+  // canceled (imagine getting to a meeting and finding out it's been
+  // cancelled).
+  //
+  // `Task`s are jointly owned by libdispatch and the executor.
+  //
+  // Invariant: if the `tasks_` set contains a pointer to a `Task`, it is a
+  // valid object. This is achieved because when libdispatch executes a task,
+  // the task will remove itself from the executor (via a call to
+  // `OnCompletion`) before deleting itself. The reverse is not true: a
+  // cancelled task is removed from the executor, but won't be destroyed until
+  // its original due time is past.
+  std::unordered_set<Task*> tasks_;
+
+  Id current_id_ = 0;
+
+  // Whether or not the executor has been disposed. Only operations that add
+  // new work need to observe this. Other operations that operate on `tasks_` or
+  // `schedule_` implicitly do so because those structures are cleared during
+  // `Dispose`.
+  bool disposed_ = false;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EXECUTOR_LIBDISPATCH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.mm
new file mode 100644
index 0000000..390cdba
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_libdispatch.mm	
@@ -0,0 +1,379 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/executor_libdispatch.h"
+
+#include <algorithm>
+#include <atomic>
+#include <vector>
+
+#include "Firestore/core/src/util/defer.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+#include "Firestore/core/src/util/task.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+absl::string_view StringViewFromDispatchLabel(const char* const label) {
+  // Make sure string_view's data is not null, because it's used for logging.
+  return label ? absl::string_view{label} : absl::string_view{""};
+}
+
+// GetLabel functions are guaranteed to never return a "null" string_view
+// (i.e. data() != nullptr).
+absl::string_view GetQueueLabel(const dispatch_queue_t queue) {
+  return StringViewFromDispatchLabel(dispatch_queue_get_label(queue));
+}
+absl::string_view GetCurrentQueueLabel() {
+  // Note: dispatch_queue_get_label may return nullptr if the queue wasn't
+  // initialized with a label.
+  return StringViewFromDispatchLabel(
+      dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL));
+}
+
+}  // namespace
+
+// MARK: - ExecutorLibdispatch
+
+ExecutorLibdispatch::ExecutorLibdispatch(const dispatch_queue_t dispatch_queue)
+    : dispatch_queue_{dispatch_queue} {
+}
+
+ExecutorLibdispatch::~ExecutorLibdispatch() {
+  Dispose();
+}
+
+void ExecutorLibdispatch::Dispose() {
+  TASK_TRACE("Executor::~Executor %s", this);
+
+  decltype(tasks_) local_tasks;
+  {
+    std::unique_lock<std::mutex> lock(mutex_);
+
+    disposed_ = true;
+
+    // Transfer ownership of tasks out of the executor members and into
+    // `local_tasks`. This prevents any concurrent execution of calls to
+    // `OnCompletion` or `Cancel` from finding tasks (and also from releasing
+    // them).
+    local_tasks.swap(tasks_);
+
+    // All scheduled operations are also registered in `tasks_` so they can be
+    // handled in a single loop below.
+    schedule_.clear();
+  }
+
+  for (Task* task : local_tasks) {
+    TASK_TRACE("Executor::~Executor %s cancelling %s", this, task);
+    task->Cancel();
+
+    // Release this method's ownership (obtained when `local_tasks` swapped with
+    // `tasks_`).
+    task->Release();
+  }
+}
+
+bool ExecutorLibdispatch::IsCurrentExecutor() const {
+  return GetCurrentQueueLabel() == GetQueueLabel(dispatch_queue());
+}
+std::string ExecutorLibdispatch::CurrentExecutorName() const {
+  return GetCurrentQueueLabel().data();
+}
+std::string ExecutorLibdispatch::Name() const {
+  return GetQueueLabel(dispatch_queue()).data();
+}
+
+void ExecutorLibdispatch::Execute(Operation&& operation) {
+  auto* task = Task::Create(this, std::move(operation));
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (disposed_) {
+      task->Release();
+      return;
+    }
+    tasks_.insert(task);
+  }
+
+  task->Retain();  // For libdispatch's ownership
+  dispatch_async_f(dispatch_queue_, task, InvokeAsync);
+}
+
+void ExecutorLibdispatch::ExecuteBlocking(Operation&& operation) {
+  HARD_ASSERT(
+      GetCurrentQueueLabel() != GetQueueLabel(dispatch_queue_),
+      "Calling ExecuteBlocking on the current queue will lead to a deadlock.");
+
+  auto* task = Task::Create(this, std::move(operation));
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (disposed_) {
+      task->Release();
+      return;
+    }
+    tasks_.insert(task);
+  }
+
+  task->Retain();  // For libdispatch's ownership
+  dispatch_sync_f(dispatch_queue_, task, InvokeSync);
+}
+
+DelayedOperation ExecutorLibdispatch::Schedule(Milliseconds delay,
+                                               Tag tag,
+                                               Operation&& operation) {
+  namespace chr = std::chrono;
+  const dispatch_time_t delay_ns = dispatch_time(
+      DISPATCH_TIME_NOW, chr::duration_cast<chr::nanoseconds>(delay).count());
+
+  // Ownership is shared with libdispatch because it's impossible to actually
+  // cancel work after it's been dispatched and libdispatch is guaranteed to
+  // outlive the executor, so it's possible for tasks to be executed by
+  // libdispatch after the executor is destroyed. While the Executor has a
+  // pointer to the Task it also has ownership.
+  Task* task = nullptr;
+  TimePoint target_time = MakeTargetTime(delay);
+  Id id = 0;
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (disposed_) {
+      return {};
+    }
+
+    id = NextIdLocked();
+    task = Task::Create(this, target_time, tag, id, std::move(operation));
+
+    tasks_.insert(task);
+    schedule_[id] = task;
+  }
+
+  task->Retain();  // For libdispatch's ownership
+  dispatch_after_f(delay_ns, dispatch_queue_, task, InvokeAsync);
+
+  return DelayedOperation(this, id);
+}
+
+void ExecutorLibdispatch::OnCompletion(Task* task) {
+  bool should_release = false;
+  {
+    TASK_TRACE("Executor::OnCompletion %s task %s", this, task);
+    std::lock_guard<std::mutex> lock(mutex_);
+    // No need to check `disposed_`: in that case `tasks_` would have been
+    // cleared.
+
+    auto found = tasks_.find(task);
+    if (found != tasks_.end()) {
+      should_release = true;
+      tasks_.erase(found);
+
+      // Only try to remove scheduled tasks here because non-scheduled tasks
+      // all have id 0, which overlaps with the first scheduled task.
+      if (!task->is_immediate()) {
+        schedule_.erase(task->id());
+      }
+    }
+  }
+
+  // Avoid calling potentially locking methods on the task while holding the
+  // executor's lock.
+  if (should_release) {
+    task->Release();
+  }
+}
+
+void ExecutorLibdispatch::Cancel(Id operation_id) {
+  Task* found_task = nullptr;
+  {
+    TASK_TRACE("Executor::Cancel %s task %s", this, task);
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    // The `Task` referenced by the given `operation_id` might have been
+    // destroyed by the time cancellation function runs, in which case it's
+    // guaranteed to have been removed from the `schedule_`. If the
+    // `operation_id` refers to a task that has been removed, the call to
+    // `Cancel` will be a no-op.
+    const auto found = schedule_.find(operation_id);
+
+    // It's possible for the operation to be missing if libdispatch gets to run
+    // it after it was force-run, for example.
+    if (found != schedule_.end()) {
+      found_task = found->second;
+
+      // Removing the Task from `tasks_` prevents `OnCompletion` from releasing
+      // the task. This effectively transfers ownership to this method--no
+      // additional retain is required.
+      tasks_.erase(found_task);
+      schedule_.erase(found);
+    }
+  }
+
+  // Avoid calling potentially locking methods on the task while holding the
+  // executor's lock.
+  if (found_task) {
+    found_task->Cancel();
+
+    // Release this method's ownership.
+    found_task->Release();
+  }
+}
+
+void ExecutorLibdispatch::InvokeAsync(void* raw_task) {
+  auto* task = static_cast<Task*>(raw_task);
+  task->ExecuteAndRelease();
+}
+
+void ExecutorLibdispatch::InvokeSync(void* raw_task) {
+  // Note: keep this implementation separate from `InvokeAsync` to make it
+  // clearer in stack traces exactly what's going on.
+  auto* task = static_cast<Task*>(raw_task);
+  task->ExecuteAndRelease();
+}
+
+// Test-only methods
+
+bool ExecutorLibdispatch::IsTagScheduled(Tag tag) const {
+  std::vector<Task*> matches;
+
+  {
+    std::unique_lock<std::mutex> lock(mutex_);
+
+    // There's a race inherent in making `IsTagScheduled` checks after a task
+    // has executed. The problem is that the task has to lock the Executor to
+    // report its completion, but `IsTagScheduled` needs that lock too. Absent
+    // any intervention, if `IsTagScheduled` won the race it could indicate
+    // that tasks that appear completed are still scheduled.
+    //
+    // Work around this by waiting for tasks that are currently executing to
+    // complete. That is, only tasks that are in the schedule and in the
+    // `kInitial` state are considered scheduled.
+    //
+    // Unfortunately, this has to be done with the Executor unlocked so that
+    // the task can report its completion without deadlocking. The executor
+    // can't be unlocked while iterating the `schedule_` though, so collect up
+    // potential matches in a separate collection.
+    for (const ScheduleEntry& entry : schedule_) {
+      Task* task = entry.second;
+      if (task->tag() == tag) {
+        matches.push_back(task);
+
+        // Retain local references to prevent the task from deleting itself
+        // before it can be examined outside the executor mutex.
+        task->Retain();
+      }
+    }
+  }
+
+  // Avoid calling potentially locking methods on the task while holding the
+  // executor's lock.
+  bool tag_scheduled = false;
+  for (Task* task : matches) {
+    // Do not break out of the loop early: every task must be released. Once
+    // we find a tag that's still scheduled we no longer need to wait for tasks.
+    if (!tag_scheduled) {
+      bool task_completed = task->AwaitIfRunning();
+      tag_scheduled = !task_completed;
+    }
+
+    // Release this method's ownership.
+    task->Release();
+  }
+
+  return tag_scheduled;
+}
+
+bool ExecutorLibdispatch::IsIdScheduled(Id id) const {
+  Task* found_task = nullptr;
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    auto iter = schedule_.find(id);
+    if (iter != schedule_.end()) {
+      found_task = iter->second;
+
+      // Retain local references to prevent the task from deleting itself before
+      // it can be examined outside the executor mutex.
+      found_task->Retain();
+    }
+  }
+
+  // Avoid calling potentially locking methods on the task while holding the
+  // executor's lock.
+  bool id_scheduled = false;
+  if (found_task) {
+    bool task_completed = found_task->AwaitIfRunning();
+    id_scheduled = !task_completed;
+
+    // Release this method's ownership
+    found_task->Release();
+  }
+
+  return id_scheduled;
+}
+
+Task* ExecutorLibdispatch::PopFromSchedule() {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  if (schedule_.empty()) {
+    return nullptr;
+  }
+
+  const auto nearest =
+      std::min_element(schedule_.begin(), schedule_.end(),
+                       [](const ScheduleEntry& lhs, const ScheduleEntry& rhs) {
+                         return *lhs.second < *rhs.second;
+                       });
+
+  Task* task = nearest->second;
+
+  // Removing the task from `tasks_` will prevent `OnCompletion` from finding
+  // it (or releasing it). This means the executor's ownership is transferred to
+  // the caller--no additional `Retain` is required here.
+  tasks_.erase(task);
+  schedule_.erase(nearest);
+  return task;
+}
+
+ExecutorLibdispatch::Id ExecutorLibdispatch::NextIdLocked() {
+  // The wrap around after ~4 billion operations is explicitly ignored. Even if
+  // an instance of `ExecutorLibdispatch` runs long enough to get `current_id_`
+  // to overflow, it's extremely unlikely that any object still holds a
+  // reference that is old enough to cause a conflict.
+  return current_id_++;
+}
+
+// MARK: - Executor
+
+std::unique_ptr<Executor> Executor::CreateSerial(const char* label) {
+  dispatch_queue_t queue = dispatch_queue_create(label, DISPATCH_QUEUE_SERIAL);
+  return absl::make_unique<ExecutorLibdispatch>(queue);
+}
+
+std::unique_ptr<Executor> Executor::CreateConcurrent(const char* label,
+                                                     int threads) {
+  HARD_ASSERT(threads > 1);
+
+  // Concurrent queues auto-create enough threads to avoid deadlock so there's
+  // no need to honor the threads argument.
+  dispatch_queue_t queue =
+      dispatch_queue_create(label, DISPATCH_QUEUE_CONCURRENT);
+  return absl::make_unique<ExecutorLibdispatch>(queue);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.cc
new file mode 100644
index 0000000..1c85e5d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.cc	
@@ -0,0 +1,259 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/executor_std.h"
+
+#include <future>  // NOLINT(build/c++11)
+#include <memory>
+#include <sstream>
+
+#include "Firestore/core/src/util/config.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/schedule.h"
+#include "Firestore/core/src/util/task.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+// As a convention, assign the epoch time to all operations scheduled for
+// immediate execution. Note that it means that an immediate operation is
+// always scheduled before any delayed operation, even in the corner case when
+// the immediate operation was scheduled after a delayed operation was due
+// (but hasn't yet run).
+Executor::TimePoint Immediate() {
+  return Executor::TimePoint{};
+}
+
+// The only guarantee is that different `thread_id`s will produce different
+// values.
+std::string ThreadIdToString(const std::thread::id thread_id) {
+  std::ostringstream stream;
+  stream << thread_id;
+  return stream.str();
+}
+
+}  // namespace
+
+class ExecutorStd::SharedState {
+ public:
+  // Operations scheduled for immediate execution are also put on the schedule
+  // (with due time set to `Immediate`).
+  class Schedule schedule_;
+};
+
+// MARK: - ExecutorStd
+
+ExecutorStd::ExecutorStd(int threads)
+    : state_(std::make_shared<SharedState>()) {
+  HARD_ASSERT(threads > 0);
+
+  for (int i = 0; i < threads; ++i) {
+    worker_thread_pool_.emplace_back(&ExecutorStd::PollingThread, state_);
+  }
+}
+
+ExecutorStd::~ExecutorStd() {
+  Dispose();
+}
+
+void ExecutorStd::Dispose() {
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    // Do nothing if already disposed.
+    if (state_ == nullptr) {
+      return;
+    }
+
+    state_->schedule_.Clear();
+
+    // Enqueue one Task with the kShutdownTag for each worker. Workers will
+    // finish whatever task they're currently working on, execute this task,
+    // and then quit.
+    //
+    // Note that this destructor may be running on a thread managed by this
+    // Executor. This means that these tasks cannot be Awaited, though we do so
+    // indirectly by joining threads if possible. On the thread currently
+    // running this destructor, the kShutdownTag Task will execute after the
+    // destructor completes.
+    for (size_t i = 0; i < worker_thread_pool_.size(); ++i) {
+      PushOnScheduleLocked(Immediate(), kShutdownTag, [] {});
+    }
+
+    state_ = nullptr;
+  }
+
+  // Now that `state_` has been released, join any threads while not holding
+  // the lock to avoid deadlocks where the thread tries to access the executor.
+  for (std::thread& thread : worker_thread_pool_) {
+    // If the current thread is running this destructor, we can't join the
+    // thread. Instead detach it and rely on PollingThread to exit cleanly.
+    if (std::this_thread::get_id() == thread.get_id()) {
+      thread.detach();
+    } else {
+      thread.join();
+    }
+  }
+}
+
+void ExecutorStd::Execute(Operation&& operation) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  if (!state_) return;
+
+  PushOnScheduleLocked(Immediate(), kNoTag, std::move(operation));
+}
+
+DelayedOperation ExecutorStd::Schedule(const Milliseconds delay,
+                                       Tag tag,
+                                       Operation&& operation) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  if (!state_) return {};
+
+  // While negative delay can be interpreted as a request for immediate
+  // execution, supporting it would provide a hacky way to modify FIFO ordering
+  // of immediate operations.
+  HARD_ASSERT(delay.count() >= 0, "Schedule: delay cannot be negative");
+
+  const auto target_time = MakeTargetTime(delay);
+  const auto id = PushOnScheduleLocked(target_time, tag, std::move(operation));
+  return DelayedOperation(this, id);
+}
+
+void ExecutorStd::OnCompletion(Task*) {
+  // No-op in this implementation
+}
+
+void ExecutorStd::Cancel(const Id operation_id) {
+  Task* removed = nullptr;
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (!state_) return;
+
+    removed = state_->schedule_.RemoveIf(
+        [operation_id](const Task& t) { return t.id() == operation_id; });
+  }
+
+  if (removed) {
+    // If we've managed to remove a task, it's guaranteed not to have started
+    // yet (currently executing tasks have been popped from the schedule and
+    // are held by a worker thread). Therefore all that's required is to
+    // release it since the task will never be executed.
+    //
+    // `Task::Cancel` is not required because once the task is removed from
+    // the schedule it can't be acquired by a worker thread.
+    removed->Release();
+  }
+}
+
+ExecutorStd::Id ExecutorStd::PushOnScheduleLocked(const TimePoint when,
+                                                  const Tag tag,
+                                                  Operation&& operation) {
+  // Note: operations scheduled for immediate execution don't actually need an
+  // id. This could be tweaked to reuse the same id for all such operations.
+  const auto id = NextIdLocked();
+  state_->schedule_.Push(
+      Task::Create(nullptr, when, tag, id, std::move(operation)));
+  return id;
+}
+
+void ExecutorStd::PollingThread(std::shared_ptr<SharedState> state) {
+  for (;;) {
+    Task* task = state->schedule_.PopBlocking();
+    bool shutdown_requested = task->tag() == kShutdownTag;
+
+    task->ExecuteAndRelease();
+    if (shutdown_requested) {
+      break;
+    }
+  }
+}
+
+ExecutorStd::Id ExecutorStd::NextIdLocked() {
+  // The wrap around after ~4 billion operations is explicitly ignored. Even if
+  // an instance of `ExecutorStd` runs long enough to get `current_id_` to
+  // overflow, it's extremely unlikely that any object still holds a reference
+  // that is old enough to cause a conflict.
+  return current_id_++;
+}
+
+bool ExecutorStd::IsCurrentExecutor() const {
+  auto current_id = std::this_thread::get_id();
+  for (const std::thread& thread : worker_thread_pool_) {
+    if (thread.get_id() == current_id) {
+      return true;
+    }
+  }
+  return false;
+}
+
+std::string ExecutorStd::CurrentExecutorName() const {
+  if (IsCurrentExecutor()) {
+    return Name();
+  } else {
+    return ThreadIdToString(std::this_thread::get_id());
+  }
+}
+
+std::string ExecutorStd::Name() const {
+  return ThreadIdToString(worker_thread_pool_.front().get_id());
+}
+
+void ExecutorStd::ExecuteBlocking(Operation&& operation) {
+  std::promise<void> signal_finished;
+  Execute([&] {
+    operation();
+    signal_finished.set_value();
+  });
+  signal_finished.get_future().wait();
+}
+
+bool ExecutorStd::IsTagScheduled(const Tag tag) const {
+  return state_->schedule_.Contains(
+      [&tag](const Task& t) { return t.tag() == tag; });
+}
+
+bool ExecutorStd::IsIdScheduled(const Id id) const {
+  return state_->schedule_.Contains(
+      [&id](const Task& t) { return t.id() == id; });
+}
+
+Task* ExecutorStd::PopFromSchedule() {
+  return state_->schedule_.RemoveIf(
+      [](const Task& t) { return !t.is_immediate(); });
+}
+
+// MARK: - Executor
+
+// Only defined on non-Apple platforms. On Apple platforms, see the alternative
+// definition in executor_libdispatch.mm.
+#if !HAVE_LIBDISPATCH
+
+std::unique_ptr<Executor> Executor::CreateSerial(const char*) {
+  return absl::make_unique<ExecutorStd>(/*threads=*/1);
+}
+
+std::unique_ptr<Executor> Executor::CreateConcurrent(const char*, int threads) {
+  return absl::make_unique<ExecutorStd>(threads);
+}
+
+#endif  // !HAVE_LIBDISPATCH
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.h
new file mode 100644
index 0000000..bd411c3
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/executor_std.h	
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_EXECUTOR_STD_H_
+#define FIRESTORE_CORE_SRC_UTIL_EXECUTOR_STD_H_
+
+#include <algorithm>
+#include <atomic>
+#include <condition_variable>  // NOLINT(build/c++11)
+#include <deque>
+#include <memory>
+#include <mutex>  // NOLINT(build/c++11)
+#include <string>
+#include <thread>  // NOLINT(build/c++11)
+#include <utility>
+#include <vector>
+
+#include "Firestore/core/src/util/executor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class Schedule;
+class Task;
+
+// A serial queue that executes provided operations on a dedicated background
+// thread, using C++11 standard library functionality.
+class ExecutorStd : public Executor {
+ public:
+  static constexpr Tag kShutdownTag = -2;
+
+  explicit ExecutorStd(int threads);
+  ~ExecutorStd();
+
+  void Dispose() override;
+
+  void Execute(Operation&& operation) override;
+  void ExecuteBlocking(Operation&& operation) override;
+
+  DelayedOperation Schedule(Milliseconds delay,
+                            Tag tag,
+                            Operation&& operation) override;
+
+  bool IsCurrentExecutor() const override;
+  std::string CurrentExecutorName() const override;
+  std::string Name() const override;
+
+  bool IsTagScheduled(Tag tag) const override;
+  bool IsIdScheduled(Id id) const override;
+  Task* PopFromSchedule() override;
+
+ private:
+  class SharedState;
+
+  Id PushOnScheduleLocked(TimePoint when, Tag tag, Operation&& operation);
+
+  void OnCompletion(Task* task) override;
+  void Cancel(Id operation_id) override;
+
+  static void PollingThread(std::shared_ptr<SharedState> state);
+  Id NextIdLocked();
+
+  // A mutex that provides mutual exclusion to users of the Executor interface.
+  // Worker threads do not acquire this mutex--they only operate on the
+  // SharedState.
+  std::mutex mutex_;
+
+  std::vector<std::thread> worker_thread_pool_;
+
+  Id current_id_ = 0;
+
+  // State shared with workers. Note that if the Executor's destructor is called
+  // from a worker thread, this state will outlive the nominally owning
+  // Executor. `mutex_` does not protect this state.
+  std::shared_ptr<SharedState> state_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_EXECUTOR_STD_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem.h
new file mode 100644
index 0000000..1a1e25f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem.h	
@@ -0,0 +1,264 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_FILESYSTEM_H_
+#define FIRESTORE_CORE_SRC_UTIL_FILESYSTEM_H_
+
+#include <memory>
+#include <string>
+
+#include "Firestore/core/src/util/status.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class Path;
+
+template <typename T>
+class StatusOr;
+
+/**
+ * A high-level interface describing filesystem operations.
+ */
+class Filesystem {
+ public:
+  virtual ~Filesystem() = default;
+
+  Filesystem(const Filesystem&) = delete;
+  Filesystem& operator=(const Filesystem&) = delete;
+
+  /**
+   * Returns a singleton default filesystem implementation for the current
+   * operating system.
+   */
+  static Filesystem* Default();
+
+  /**
+   * Returns a system-defined best directory in which to create application
+   * data. Values vary wildly across platforms. They include:
+   *
+   *   * iOS: $container/Library/Application Support/$app_name
+   *   * Linux: $HOME/.local/share/$app_name
+   *   * macOS: $container/Library/Application Support/$app_name
+   *   * Other UNIX: $HOME/.$app_name
+   *   * tvOS: $container/Library/Caches/$app_name
+   *   * Windows: %USERPROFILE%/AppData/Local
+   *
+   * On iOS, tvOS, and macOS (when running sandboxed), these locations are
+   * relative to the data container for the current application. On macOS when
+   * the application is not sandboxed, the returned value will be relative to
+   * $HOME instead. See "About the iOS File System" in the Apple "File System
+   * Programming Guide" at https://apple.co/2Nn7Bsb.
+   *
+   * Note: the returned path is just where the system thinks the application
+   * data should be stored, but AppDataDir does not actually guarantee that this
+   * path exists.
+   *
+   * @param app_name The name of the application.
+   */
+  virtual StatusOr<Path> AppDataDir(absl::string_view app_name);
+
+  /**
+   * Returns the Documents directory in which Firestore used to store
+   * application data. Values vary wildly across platforms. They include:
+   *
+   *   * iOS: $container/Documents/$app_name
+   *   * macOS: $HOME/.$app_name
+   *
+   * On iOS, the Documents folder is relative to the data container for the
+   * current application. See "About the iOS File System" in the Apple "File
+   * System Programming Guide" at https://apple.co/2Nn7Bsb.
+   *
+   * Note: the returned path is just where the system thinks the documents
+   * directory should be stored, but LegacyDocumentsDir does not actually
+   * guarantee that this path exists.
+   *
+   * @param app_name The name of the application.
+   *
+   * @returns The documents directory path or a status with
+   * Error::kErrorUnimplemented if the current platform does not have a legacy
+   * documents directory.
+   */
+  virtual StatusOr<Path> LegacyDocumentsDir(absl::string_view app_name);
+
+  /**
+   * Returns system-defined best directory in which to create temporary files.
+   * Typical return values are like `/tmp` on UNIX systems. Clients should
+   * create randomly named directories or files within this location to avoid
+   * collisions. Absent any changes that might affect the underlying calls, the
+   * value returned from TempDir will be stable over time.
+   *
+   * Note: the returned path is just where the system thinks temporary files
+   * should be stored, but TempDir does not actually guarantee that this path
+   * exists.
+   */
+  virtual Path TempDir();
+
+  /**
+   * Answers the question "is this path a directory? The path is not required to
+   * have a trailing slash.
+   *
+   * Typical return codes include:
+   *   * Ok - The path exists and is a directory.
+   *   * FailedPrecondition - Some component of the path is not a directory.
+   * This does not necessarily imply that the path exists and is a file.
+   *   * NotFound - The path does not exist
+   *   * PermissionDenied - Insufficient permissions to access the path.
+   */
+  virtual Status IsDirectory(const Path& path);
+
+  /**
+   * On success, returns the size in bytes of the file specified by
+   * `path`.
+   */
+  virtual StatusOr<int64_t> FileSize(const Path& path);
+
+  /**
+   * Recursively creates all the directories in the path name if they don't
+   * exist.
+   *
+   * @return Ok if the directory was created or already existed.
+   */
+  virtual Status RecursivelyCreateDir(const Path& path);
+
+  /**
+   * Recursively deletes the contents of the given pathname. If the pathname is
+   * a file, deletes just that file. The the pathname is a directory, deletes
+   * everything within the directory.
+   *
+   * @return Ok if the directory was deleted or did not exist.
+   */
+  virtual Status RecursivelyRemove(const Path& path);
+
+  /**
+   * Creates the given directory. The immediate parent directory must already
+   * exist and not already be a file.
+   *
+   * @return Ok if the directory was created or already existed. On some systems
+   *     this may also return Ok if a regular file exists at the given path.
+   */
+  virtual Status CreateDir(const Path& path);
+
+  /**
+   * Deletes the given directory if it exists.
+   *
+   * @return Ok if the directory was deleted or did not exist. Returns a
+   *     system-defined error if the path is not a directory or the directory is
+   *     non-empty.
+   */
+  virtual Status RemoveDir(const Path& path);
+
+  /**
+   * Deletes the given file if it exists.
+   *
+   * @return Ok if the file was deleted or did not exist. Returns a
+   * system-defined error if the path exists but is not a regular file.
+   */
+  virtual Status RemoveFile(const Path& path);
+
+  /**
+   * Recursively deletes the contents of the given pathname that is known to be
+   * a directory.
+   *
+   * @return Ok if the directory was deleted or did not exist. Returns a
+   *     system-defined error if the path exists but is not a directory.
+   *
+   */
+  virtual Status RecursivelyRemoveDir(const Path& path);
+
+  virtual Status Rename(const Path& from_path, const Path& to_path);
+
+  /**
+   * Marks the given directory as excluded from platform-specific backup schemes
+   * like iCloud backup.
+   */
+  virtual Status ExcludeFromBackups(const Path& dir);
+
+  /**
+   * On success, opens the file at the given `path` and returns its contents as
+   * a string.
+   */
+  virtual StatusOr<std::string> ReadFile(const Path& path);
+
+ protected:
+  Filesystem() = default;
+};
+
+/**
+ * Returns true if the path is an accessible directory and is empty.
+ */
+bool IsEmptyDir(const Path& path);
+
+/**
+ * Implements an iterator over the contents of a directory. Initializes to the
+ * first entry in the directory.
+ */
+class DirectoryIterator {
+ public:
+  /**
+   * Creates a new platform-specific directory iterator.
+   *
+   * @param path The path over which to iterate (must outlive the
+   *     DirectoryIterator).
+   */
+  static std::unique_ptr<DirectoryIterator> Create(const Path& path);
+
+  virtual ~DirectoryIterator() = default;
+
+  /**
+   * Advances the iterator.
+   */
+  virtual void Next() = 0;
+
+  /**
+   * Returns true if `Next()` and `file()` can be called on the iterator.
+   * If `Valid() == false && status().ok()`, then iteration has finished.
+   */
+  virtual bool Valid() const = 0;
+
+  /**
+   * Return the full path of the current entry pointed to by the iterator.
+   */
+  virtual Path file() const = 0;
+
+  /**
+   * Returns the last error encountered by the iterator, or OK.
+   */
+  Status status() const {
+    return status_;
+  }
+
+ protected:
+  /**
+   * `path` should outlive the iterator.
+   */
+  explicit DirectoryIterator(const Path& path) : parent_{path} {
+  }
+
+  DirectoryIterator(const DirectoryIterator& other) = delete;
+  DirectoryIterator& operator=(const DirectoryIterator& other) = delete;
+
+  Status status_;
+  const Path& parent_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_FILESYSTEM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_apple.mm
new file mode 100644
index 0000000..5a6fdea
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_apple.mm	
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/filesystem.h"
+
+#if __APPLE__
+
+#import <Foundation/Foundation.h>
+
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "absl/strings/str_cat.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+Status Filesystem::ExcludeFromBackups(const Path& dir) {
+  NSURL* dir_url = [NSURL fileURLWithPath:dir.ToNSString()];
+  NSError* error = nil;
+  if (![dir_url setResourceValue:@YES
+                          forKey:NSURLIsExcludedFromBackupKey
+                           error:&error]) {
+    return Status{
+        Error::kErrorInternal,
+        "Failed to mark persistence directory as excluded from backups"}
+        .CausedBy(Status::FromNSError(error));
+  }
+
+  return Status::OK();
+}
+
+StatusOr<Path> Filesystem::AppDataDir(absl::string_view app_name) {
+#if TARGET_OS_IOS || TARGET_OS_OSX
+  NSArray<NSString*>* directories = NSSearchPathForDirectoriesInDomains(
+      NSApplicationSupportDirectory, NSUserDomainMask, YES);
+  return Path::FromNSString(directories[0]).AppendUtf8(app_name);
+
+#elif TARGET_OS_TV
+  NSArray<NSString*>* directories = NSSearchPathForDirectoriesInDomains(
+      NSCachesDirectory, NSUserDomainMask, YES);
+  return Path::FromNSString(directories[0]).AppendUtf8(app_name);
+
+#else
+#error "Don't know where to store documents on this platform."
+#endif
+}
+
+StatusOr<Path> Filesystem::LegacyDocumentsDir(absl::string_view app_name) {
+#if TARGET_OS_IOS
+  NSArray<NSString*>* directories = NSSearchPathForDirectoriesInDomains(
+      NSDocumentDirectory, NSUserDomainMask, YES);
+  return Path::FromNSString(directories[0]).AppendUtf8(app_name);
+
+#elif TARGET_OS_OSX
+  std::string dot_prefixed = absl::StrCat(".", app_name);
+  return Path::FromNSString(NSHomeDirectory()).AppendUtf8(dot_prefixed);
+
+#else
+  return Status(Error::kErrorUnimplemented,
+                "No legacy storage on this platform.");
+#endif
+}
+
+Path Filesystem::TempDir() {
+  const char* env_tmpdir = getenv("TMPDIR");
+  if (env_tmpdir) {
+    return Path::FromUtf8(env_tmpdir);
+  }
+
+  NSString* ns_tmpdir = NSTemporaryDirectory();
+  if (ns_tmpdir) {
+    return Path::FromNSString(ns_tmpdir);
+  }
+
+  return Path::FromUtf8("/tmp");
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // __APPLE__
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_common.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_common.cc
new file mode 100644
index 0000000..2b24bae
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_common.cc	
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fstream>
+#include <sstream>
+
+#include "Firestore/core/src/util/filesystem.h"
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+Filesystem* Filesystem::Default() {
+  static auto* filesystem = new Filesystem();
+  return filesystem;
+}
+
+Status Filesystem::RecursivelyCreateDir(const Path& path) {
+  Status result = CreateDir(path);
+  if (result.ok() || result.code() != Error::kErrorNotFound) {
+    // Successfully created the directory, it already existed, or some other
+    // unrecoverable error.
+    return result;
+  }
+
+  // Missing parent
+  Path parent = path.Dirname();
+  result = RecursivelyCreateDir(parent);
+  if (!result.ok()) {
+    return result;
+  }
+
+  // Successfully created the parent so try again.
+  return CreateDir(path);
+}
+
+Status Filesystem::RecursivelyRemove(const Path& path) {
+  Status status = IsDirectory(path);
+  switch (status.code()) {
+    case Error::kErrorOk:
+      return RecursivelyRemoveDir(path);
+
+    case Error::kErrorFailedPrecondition:
+      // Could be a file or something else. Attempt to delete it as a file
+      // but otherwise allow that to fail if it's not a file.
+      return RemoveFile(path);
+
+    case Error::kErrorNotFound:
+      return Status::OK();
+
+    default:
+      return status;
+  }
+}
+
+Status Filesystem::RecursivelyRemoveDir(const Path& path) {
+  std::unique_ptr<DirectoryIterator> iter = DirectoryIterator::Create(path);
+  for (; iter->Valid(); iter->Next()) {
+    Status status = RecursivelyRemove(iter->file());
+    if (!status.ok()) {
+      return status;
+    }
+  }
+
+  if (!iter->status().ok()) {
+    if (iter->status().code() == Error::kErrorNotFound) {
+      return Status::OK();
+    }
+    return iter->status();
+  }
+  return RemoveDir(path);
+}
+
+#if !__APPLE__
+Status Filesystem::ExcludeFromBackups(const Path&) {
+  // Non-Apple platforms don't yet implement exclusion from backups.
+  return Status::OK();
+}
+#endif  // !__APPLE__
+
+StatusOr<std::string> Filesystem::ReadFile(const Path& path) {
+  std::ifstream file{path.native_value()};
+  if (!file) {
+    // TODO(varconst): more error details. This will require platform-specific
+    // code, because `<iostream>` may not update `errno`.
+    return Status{Error::kErrorUnknown,
+                  StringFormat("File at path '%s' cannot be opened",
+                               path.ToUtf8String())};
+  }
+
+  std::stringstream buffer;
+  buffer << file.rdbuf();
+  return buffer.str();
+}
+
+bool IsEmptyDir(const Path& path) {
+  // If the DirectoryIterator is valid there's at least one entry.
+  auto iter = DirectoryIterator::Create(path);
+  return iter->status().ok() && !iter->Valid();
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_posix.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_posix.cc
new file mode 100644
index 0000000..cb6ed42
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/filesystem_posix.cc	
@@ -0,0 +1,300 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/filesystem.h"
+
+#include <dirent.h>
+#include <pwd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <cerrno>
+#include <cstdio>
+#include <deque>
+#include <string>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/path.h"
+#include "Firestore/core/src/util/statusor.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+#if !__APPLE__ && !_WIN32
+// See filesystem_apple.mm and filesystem_win.cc for other implementations.
+
+namespace {
+
+StatusOr<Path> HomeDir() {
+  const char* home_dir = getenv("HOME");
+  if (home_dir) return Path::FromUtf8(home_dir);
+
+  passwd pwd;
+  passwd* result;
+  auto buffer_size = static_cast<size_t>(sysconf(_SC_GETPW_R_SIZE_MAX));
+  std::string buffer(buffer_size, '\0');
+  uid_t uid = getuid();
+  int rc;
+  do {
+    rc = getpwuid_r(uid, &pwd, &buffer[0], buffer_size, &result);
+  } while (rc == EINTR);
+
+  if (rc != 0) {
+    return Status::FromErrno(
+        rc, "Failed to find the home directory for the current user");
+  }
+
+  return Path::FromUtf8(pwd.pw_dir);
+}
+
+#if __linux__ && !__ANDROID__
+StatusOr<Path> XdgDataHomeDir() {
+  const char* data_home = getenv("XDG_DATA_HOME");
+  if (data_home) return Path::FromUtf8(data_home);
+
+  StatusOr<Path> maybe_home_dir = HomeDir();
+  if (!maybe_home_dir.ok()) return maybe_home_dir;
+
+  const Path& home_dir = maybe_home_dir.ValueOrDie();
+  return home_dir.AppendUtf8(".local/share");
+}
+#endif  // __linux__ && !__ANDROID__
+
+}  // namespace
+
+StatusOr<Path> Filesystem::AppDataDir(absl::string_view app_name) {
+#if __linux__ && !__ANDROID__
+  // On Linux, use XDG data home, usually $HOME/.local/share/$app_name
+  StatusOr<Path> maybe_data_home = XdgDataHomeDir();
+  if (!maybe_data_home.ok()) return maybe_data_home;
+
+  return maybe_data_home.ValueOrDie().AppendUtf8(app_name);
+
+#elif !__ANDROID__
+  // On any other UNIX, use an old school dotted directory in $HOME.
+  StatusOr<Path> maybe_home = HomeDir();
+  if (!maybe_home.ok()) return maybe_home;
+
+  std::string dot_prefixed = absl::StrCat(".", app_name);
+  return maybe_home.ValueOrDie().AppendUtf8(dot_prefixed);
+
+#else
+  // TODO(wilhuff): On Android, use internal storage
+#error "Don't know where to store documents on this platform."
+
+#endif  // __linux__ && !__ANDROID__
+}
+
+StatusOr<Path> Filesystem::LegacyDocumentsDir(absl::string_view) {
+  return Status(Error::kErrorUnimplemented,
+                "No legacy storage on this platform.");
+}
+
+Path Filesystem::TempDir() {
+  const char* env_tmpdir = getenv("TMPDIR");
+  if (env_tmpdir) {
+    return Path::FromUtf8(env_tmpdir);
+  }
+
+#if __ANDROID__
+  // The /tmp directory doesn't exist as a fallback; each application is
+  // supposed to keep its own temporary files. Previously /data/local/tmp may
+  // have been reasonable, but current lore points to this being unreliable for
+  // writing at higher API levels or certain phone models because default
+  // permissions on this directory no longer permit writing.
+  //
+  // TODO(wilhuff): Validate on recent Android.
+#error "Not yet sure about temporary file locations on Android."
+  return Path::FromUtf8("/data/local/tmp");
+
+#else
+  return Path::FromUtf8("/tmp");
+#endif  // __ANDROID__
+}
+#endif  // !__APPLE__ && !_WIN32
+
+Status Filesystem::IsDirectory(const Path& path) {
+  struct stat buffer {};
+  if (::stat(path.c_str(), &buffer)) {
+    if (errno == ENOENT) {
+      // Expected common error case.
+      return Status{Error::kErrorNotFound, path.ToUtf8String()};
+
+    } else if (errno == ENOTDIR) {
+      // This is a case where POSIX and Windows differ in behavior in a way
+      // that's hard to reconcile from Windows. Under POSIX, ENOTDIR indicates
+      // that not only does the path not exist, but that some parent of the
+      // path also isn't a directory.
+      //
+      // Windows, OTOH, returns ERROR_FILE_NOT_FOUND if the file doesn't exist,
+      // its immediate parent exists, and the parent is a directory. Otherwise
+      // Windows returns ERROR_PATH_NOT_FOUND. To emulate POSIX behavior you
+      // have to find the leaf-most existing parent and figure out if it's not a
+      // directory.
+      //
+      // Since we really don't care about this distinction it's easier to
+      // resolve this by returning NotFound here.
+      return Status{Error::kErrorNotFound, path.ToUtf8String()};
+    } else {
+      return Status::FromErrno(errno, path.ToUtf8String());
+    }
+  }
+
+  if (!S_ISDIR(buffer.st_mode)) {
+    return Status{Error::kErrorFailedPrecondition,
+                  StringFormat("Path %s exists but is not a directory",
+                               path.ToUtf8String())};
+  }
+
+  return Status::OK();
+}
+
+StatusOr<int64_t> Filesystem::FileSize(const Path& path) {
+  struct stat st {};
+  if (::stat(path.c_str(), &st) == 0) {
+    return st.st_size;
+  } else {
+    return Status::FromErrno(
+        errno, StringFormat("Failed to stat file: %s", path.ToUtf8String()));
+  }
+}
+
+Status Filesystem::CreateDir(const Path& path) {
+  if (::mkdir(path.c_str(), 0777)) {
+    if (errno != EEXIST) {
+      return Status::FromErrno(
+          errno,
+          StringFormat("Could not create directory %s", path.ToUtf8String()));
+    }
+  }
+
+  return Status::OK();
+}
+
+Status Filesystem::RemoveDir(const Path& path) {
+  if (::rmdir(path.c_str())) {
+    if (errno != ENOENT) {
+      return Status::FromErrno(
+          errno,
+          StringFormat("Could not delete directory %s", path.ToUtf8String()));
+    }
+  }
+  return Status::OK();
+}
+
+Status Filesystem::RemoveFile(const Path& path) {
+  if (::unlink(path.c_str())) {
+    if (errno != ENOENT) {
+      return Status::FromErrno(
+          errno, StringFormat("Could not delete file %s", path.ToUtf8String()));
+    }
+  }
+  return Status::OK();
+}
+
+Status Filesystem::Rename(const Path& from_path, const Path& to_path) {
+  if (::rename(from_path.ToUtf8String().c_str(),
+               to_path.ToUtf8String().c_str())) {
+    return Status::FromErrno(errno, from_path.ToUtf8String());
+  }
+
+  return Status::OK();
+}
+
+namespace {
+
+class PosixDirectoryIterator : public DirectoryIterator {
+ public:
+  explicit PosixDirectoryIterator(const util::Path& path);
+  virtual ~PosixDirectoryIterator();
+
+  void Next() override;
+  bool Valid() const override;
+  Path file() const override;
+
+ private:
+  void Advance();
+
+  DIR* dir_ = nullptr;
+  struct dirent* entry_ = nullptr;
+};
+
+PosixDirectoryIterator::PosixDirectoryIterator(const util::Path& path)
+    : DirectoryIterator{path} {
+  dir_ = ::opendir(parent_.c_str());
+  if (!dir_) {
+    status_ = Status::FromErrno(
+        errno,
+        StringFormat("Could not open directory %s", parent_.ToUtf8String()));
+    return;
+  }
+  Advance();
+}
+
+PosixDirectoryIterator::~PosixDirectoryIterator() {
+  if (dir_) {
+    if (::closedir(dir_) != 0) {
+      HARD_FAIL("Could not close directory %s", parent_.ToUtf8String());
+    }
+  }
+}
+
+void PosixDirectoryIterator::Advance() {
+  HARD_ASSERT(status_.ok(), "Advancing an errored iterator");
+  errno = 0;
+  entry_ = ::readdir(dir_);
+  if (!entry_) {
+    if (errno != 0) {
+      status_ = Status::FromErrno(
+          errno, StringFormat("Could not read %s", parent_.ToUtf8String()));
+    }
+  } else if (status_.ok()) {
+    // Skip self- and parent-pointer
+    if (::strcmp(".", entry_->d_name) == 0 ||
+        ::strcmp("..", entry_->d_name) == 0) {
+      Advance();
+    }
+  }
+}
+
+void PosixDirectoryIterator::Next() {
+  HARD_ASSERT(Valid(), "Next() called on invalid iterator");
+  Advance();
+}
+
+bool PosixDirectoryIterator::Valid() const {
+  return status_.ok() && entry_ != nullptr;
+}
+
+Path PosixDirectoryIterator::file() const {
+  HARD_ASSERT(Valid(), "file() called on invalid iterator");
+  return parent_.AppendUtf8(entry_->d_name, strlen(entry_->d_name));
+}
+
+}  // namespace
+
+std::unique_ptr<DirectoryIterator> DirectoryIterator::Create(
+    const util::Path& path) {
+  return absl::make_unique<PosixDirectoryIterator>(path);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/firestore_exceptions.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/firestore_exceptions.h
new file mode 100644
index 0000000..dc70229
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/firestore_exceptions.h	
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_FIRESTORE_EXCEPTIONS_H_
+#define FIRESTORE_CORE_SRC_UTIL_FIRESTORE_EXCEPTIONS_H_
+
+// Common C++ exception declarations across iOS and Android. These aren't a
+// public API surface.
+//
+// See exception.h for how to throw exceptions in a platform-agnostic way.
+
+#include <exception>
+#include <string>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+
+#if defined(__ANDROID__)
+// Abseil does not support STLPort, so avoid their config.h here.
+//
+// TODO(b/163140650): Remove once the Firebase support floor moves to NDK R18.
+//
+// Meanwhile, NDK R16b (the current minimum) includes Clang 5.0.3 and GCC 4.9.
+// While Clang supports `__cpp_exceptions` at that version, GCC does not. Both
+// support `__EXCEPTIONS`.
+#if __EXCEPTIONS
+#define FIRESTORE_HAVE_EXCEPTIONS 1
+#endif
+
+#else  // !defined(__ANDROID__)
+// On any other supported platform, just take Abseil's word for it.
+#include "absl/base/config.h"
+
+#if ABSL_HAVE_EXCEPTIONS
+#define FIRESTORE_HAVE_EXCEPTIONS 1
+#endif
+#endif  // defined(__ANDROID__)
+
+namespace firebase {
+namespace firestore {
+
+#if FIRESTORE_HAVE_EXCEPTIONS
+
+/**
+ * An exception thrown if Firestore encounters an unhandled error.
+ */
+class FirestoreException : public std::exception {
+ public:
+  FirestoreException(const std::string& message, Error code)
+      : message_(message), code_(code) {
+  }
+
+  const char* what() const noexcept override {
+    return message_.c_str();
+  }
+
+  Error code() const {
+    return code_;
+  }
+
+ private:
+  std::string message_;
+  Error code_;
+};
+
+/**
+ * An exception thrown if Firestore encounters an internal, unrecoverable error.
+ */
+class FirestoreInternalError : public FirestoreException {
+ public:
+  FirestoreInternalError(const std::string& message,
+                         Error code = Error::kErrorInternal)
+      : FirestoreException(message, code) {
+  }
+};
+
+#endif  // FIRESTORE_HAVE_EXCEPTIONS
+
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_FIRESTORE_EXCEPTIONS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.cc
new file mode 100644
index 0000000..4e28a55
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.cc	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+#include <cstdarg>
+#include <stdexcept>
+#include <string>
+
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/base/config.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace internal {
+
+void FailAssertion(const char* file,
+                   const char* func,
+                   const int line,
+                   const std::string& message) {
+  Throw(ExceptionType::AssertionFailure, file, func, line, message);
+}
+
+void FailAssertion(const char* file,
+                   const char* func,
+                   const int line,
+                   const std::string& message,
+                   const char* condition) {
+  std::string failure;
+  if (message.empty()) {
+    failure = condition;
+  } else {
+    failure = StringFormat("%s (expected %s)", message, condition);
+  }
+  FailAssertion(file, func, line, failure);
+}
+
+}  // namespace internal
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.h
new file mode 100644
index 0000000..26941cd
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hard_assert.h	
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_HARD_ASSERT_H_
+#define FIRESTORE_CORE_SRC_UTIL_HARD_ASSERT_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/exception.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/base/optimization.h"
+
+#if defined(_MSC_VER)
+#define FIRESTORE_FUNCTION_NAME __FUNCSIG__
+#else
+#define FIRESTORE_FUNCTION_NAME __PRETTY_FUNCTION__
+#endif
+
+/**
+ * Invokes the internal Fail function below with all the required contextual
+ * information and passes additional arguments.
+ *
+ * @param message The failure message.
+ * @param condition The string form of the expression that failed (optional)
+ */
+#define INVOKE_INTERNAL_FAIL(...)                     \
+  firebase::firestore::util::internal::FailAssertion( \
+      __FILE__, FIRESTORE_FUNCTION_NAME, __LINE__, __VA_ARGS__)
+
+/**
+ * Fails the current function if the given condition is false.
+ *
+ * Unlike assert(3) or NSAssert, this macro is never compiled out.
+ *
+ * @param condition The condition to test.
+ * @param format (optional) A format string suitable for util::StringFormat.
+ * @param ... format arguments to pass to util::StringFormat.
+ */
+#define HARD_ASSERT(condition, ...)                             \
+  do {                                                          \
+    if (!ABSL_PREDICT_TRUE(condition)) {                        \
+      std::string _message =                                    \
+          firebase::firestore::util::StringFormat(__VA_ARGS__); \
+      INVOKE_INTERNAL_FAIL(_message, #condition);               \
+    }                                                           \
+  } while (0)
+
+/**
+ * Unconditionally fails the current function.
+ *
+ * Unlike assert(3) or NSAssert, this macro is never compiled out.
+ *
+ * @param format A format string suitable for util::StringFormat.
+ * @param ... format arguments to pass to util::StringFormat.
+ */
+#define HARD_FAIL(...)                                        \
+  do {                                                        \
+    std::string _failure =                                    \
+        firebase::firestore::util::StringFormat(__VA_ARGS__); \
+    INVOKE_INTERNAL_FAIL(_failure);                           \
+  } while (0)
+
+/**
+ * Indicates an area of the code that cannot be reached (except possibly due to
+ * undefined behaviour or other similar badness). The only reasonable thing to
+ * do in these cases is to immediately abort.
+ */
+#define UNREACHABLE() abort()
+
+/**
+ * Returns the given `ptr` if it is non-null; otherwise, results in a failed
+ * assertion, similar to `HARD_ASSERT`. This macro deliberately expands to an
+ * expression, so that it can be used in initialization and assignment:
+ *
+ *   my_ptr_ = NOT_NULL(suspicious_ptr);
+ *   my_smart_ptr_ = std::move(NOT_NULL(suspicious_smart_ptr));
+ *
+ *   MyClass() : my_ptr_{NOT_NULL(suspicious_ptr)} {}
+ *
+ * @param ptr The pointer to check and return. Can be a smart pointer.
+ */
+#define NOT_NULL(ptr)                                                      \
+  (static_cast<void>(ABSL_PREDICT_FALSE((ptr) == nullptr)                  \
+                         ? INVOKE_INTERNAL_FAIL("Expected non-null " #ptr) \
+                         : static_cast<void>(0)),                          \
+   (ptr))  // NOLINT(whitespace/indent)
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace internal {
+
+// A no-return helper function. To raise an assertion, use Macro instead.
+ABSL_ATTRIBUTE_NORETURN void FailAssertion(const char* file,
+                                           const char* func,
+                                           int line,
+                                           const std::string& message);
+
+ABSL_ATTRIBUTE_NORETURN void FailAssertion(const char* file,
+                                           const char* func,
+                                           int line,
+                                           const std::string& message,
+                                           const char* condition);
+
+}  // namespace internal
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_HARD_ASSERT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hashing.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hashing.h
new file mode 100644
index 0000000..36bd69f
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/hashing.h	
@@ -0,0 +1,228 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_HASHING_H_
+#define FIRESTORE_CORE_SRC_UTIL_HASHING_H_
+
+#include <functional>
+#include <iterator>
+#include <string>
+#include <type_traits>
+
+#include "Firestore/core/src/objc/objc_type_traits.h"
+#include "Firestore/core/src/util/type_traits.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// This is a pretty terrible hash implementation for lack of a better one being
+// readily available. It exists as a portability crutch between our existing
+// Objective-C code where overriding `-isEqual:` also requires `-hash` and C++
+// where `operator==()` can be defined without defining a hash code.
+//
+// It's based on the recommendation in Effective Java, Item 9, wherein you
+// implement composite hashes like so:
+//
+//     size_t result = first_;
+//     result = 31 * result + second_;
+//     result = 31 * result + third_;
+//     // ...
+//     return result;
+//
+// This is the basis of this implementation because that's what the existing
+// Objective-C code mostly does by hand. Using this implementation gets the
+// same result by calling
+//
+//     return util::Hash(first_, second_, /* ..., */ third_);
+//
+// TODO(wilhuff): Replace this with whatever Abseil releases.
+
+namespace impl {
+
+/**
+ * A type trait that identifies whether or not std::hash is available for a
+ * given type.
+ *
+ * This type should not be necessary since specialization failure on an
+ * expression like `decltype(std::hash<K>{}(value)` should be enough to disable
+ * overloads that require `std::hash` to be defined but unfortunately some
+ * standard libraries ship with std::hash defined for all types that only
+ * fail later (e.g. via static_assert). One such implementation is the libc++
+ * that ships with Xcode 8.3.3, which is a supported platform.
+ */
+template <typename T>
+struct has_std_hash {
+  // There may be other types for which std::hash is defined but they don't
+  // matter for our purposes.
+  enum {
+    value = std::is_arithmetic<T>{} || std::is_pointer<T>{} ||
+            std::is_same<T, std::string>{}
+  };
+
+  constexpr operator bool() const {
+    return value;
+  }
+};
+
+/**
+ * A type that's equivalent to size_t if std::hash<T> is defined or a compile
+ * error otherwise.
+ *
+ * This is effectively just a safe implementation of
+ * `decltype(std::hash<T>{}(std::declval<T>()))`.
+ */
+template <typename T>
+using std_hash_type =
+    typename absl::enable_if_t<has_std_hash<T>::value, size_t>;
+
+/**
+ * Combines a hash_value with whatever accumulated state there is so far.
+ */
+constexpr size_t Combine(size_t state, size_t hash_value) {
+  return 31 * state + hash_value;
+}
+
+/**
+ * Explicit ordering of hashers, allowing SFINAE without all the enable_if
+ * cruft.
+ *
+ * In order we try:
+ *   * A Hash() member, if defined and the return type is an integral type
+ *   * A `-hash` method, if dealing with an Objective-C class
+ *   * A std::hash specialization, if available
+ *   * A range-based specialization, valid if either of the above hold on the
+ *     members of the range.
+ *
+ * Explicit ordering resolves the ambiguity of the case where a std::hash
+ * specialization is available, but the type is also a range for whose members
+ * std::hash is also available, e.g. with std::string.
+ *
+ * HashChoice is a recursive type, defined such that HashChoice<0> is the most
+ * specific type with HashChoice<1> and beyond being progressively less
+ * specific. This causes the compiler to prioritize the overloads with
+ * lower-numbered HashChoice types, allowing compilation to succeed even if
+ * multiple specializations match.
+ */
+template <int I>
+struct HashChoice : HashChoice<I + 1> {};
+
+template <>
+struct HashChoice<5> {};
+
+template <typename K>
+size_t InvokeHash(const K& value);
+
+/**
+ * Hashes the given value if it defines a Hash() member.
+ *
+ * @return The result of `value.Hash()`.
+ */
+template <typename K>
+auto RankedInvokeHash(const K& value, HashChoice<0>) -> decltype(value.Hash()) {
+  return value.Hash();
+}
+
+#if __OBJC__
+
+/**
+ * Hashes the given value if it's of an Objective-C class (and thus defines
+ * `-hash`.
+ *
+ * @return The result of `[value hash]`, converted to `size_t`.
+ */
+template <typename K,
+          typename = absl::enable_if_t<objc::is_objc_pointer<K>::value>>
+size_t RankedInvokeHash(const K& value, HashChoice<1>) {
+  return static_cast<size_t>([value hash]);
+}
+
+#endif
+
+/**
+ * Hashes the given value if it has a specialization of std::hash.
+ *
+ * @return The result of `std::hash<K>{}(value)`
+ */
+template <typename K>
+std_hash_type<K> RankedInvokeHash(const K& value, HashChoice<2>) {
+  return std::hash<K>{}(value);
+}
+
+/**
+ * Hashes the contents of the given range of values if the value_type of the
+ * range can be hashed.
+ */
+template <typename Range>
+auto RankedInvokeHash(const Range& range, HashChoice<3>)
+    -> decltype(InvokeHash(*std::begin(range))) {
+  size_t result = 0;
+  size_t size = 0;
+  for (auto&& element : range) {
+    ++size;
+    size_t piece = InvokeHash(element);
+    result = Combine(result, piece);
+  }
+  size_t size_hash = InvokeHash(size);
+  result = Combine(result, size_hash);
+  return result;
+}
+
+/**
+ * Hashes the contents of the given optional value, only if the underlying
+ * value can itself be hashed.
+ */
+template <typename K>
+auto RankedInvokeHash(const absl::optional<K>& option, HashChoice<4>)
+    -> decltype(InvokeHash(*option)) {
+  return option ? InvokeHash(*option) : -1171;
+}
+
+template <typename K, typename = absl::enable_if_t<std::is_enum<K>::value>>
+size_t RankedInvokeHash(K value, HashChoice<5>) {
+  auto underlying = static_cast<typename std::underlying_type<K>::type>(value);
+  return InvokeHash(underlying);
+}
+
+template <typename K>
+size_t InvokeHash(const K& value) {
+  return RankedInvokeHash(value, HashChoice<0>{});
+}
+
+inline size_t HashInternal(size_t state) {
+  return state;
+}
+
+template <typename T, typename... Ts>
+size_t HashInternal(size_t state, const T& value, const Ts&... rest) {
+  state = Combine(state, InvokeHash(value));
+  return HashInternal(state, rest...);
+}
+
+}  // namespace impl
+
+template <typename... Ts>
+size_t Hash(const Ts&... values) {
+  return impl::HashInternal(0u, values...);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_HASHING_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/iterator_adaptors.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/iterator_adaptors.h
new file mode 100644
index 0000000..16a0224
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/iterator_adaptors.h	
@@ -0,0 +1,812 @@
+/*
+ * Copyright 2005, 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Provides some iterator adaptors and views.
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_ITERATOR_ADAPTORS_H_
+#define FIRESTORE_CORE_SRC_UTIL_ITERATOR_ADAPTORS_H_
+
+#include <iterator>
+#include <memory>
+#include <type_traits>
+
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+namespace internal {
+
+// value == true if Iter prohibits modification of its pointees.
+template <typename Iter>
+struct IsConstIter
+    : std::is_const<typename std::remove_reference<
+          typename std::iterator_traits<Iter>::reference>::type> {};
+
+template <bool Cond, typename T>
+struct AddConstIf : std::conditional<Cond, const T, T> {};
+
+// SynthIterTraits propagates the constness of the 'BaseIter' iterator
+// type to its own exported 'pointer' and 'reference' typedefs.
+template <typename BaseIter, typename Val>
+struct SynthIterTraits : std::iterator_traits<BaseIter> {
+ private:
+  static constexpr bool kIterConst = IsConstIter<BaseIter>::value;
+
+ public:
+  using value_type = typename std::remove_cv<Val>::type;
+  using pointer = typename AddConstIf<kIterConst, Val>::type*;
+  using reference = typename AddConstIf<kIterConst, Val>::type&;
+};
+
+// PointeeSynthIterTraits is similar to SynthIterTraits, but the 'Ptr'
+// parameter is a pointer-like type, and value_type is the pointee.
+template <typename BaseIter, typename Ptr>
+struct PointeeSynthIterTraits : std::iterator_traits<BaseIter> {
+ private:
+  static constexpr bool kIterConst = IsConstIter<BaseIter>::value;
+
+ public:
+  using value_type = typename std::pointer_traits<Ptr>::element_type;
+  using pointer = typename AddConstIf<kIterConst, value_type>::type*;
+  using reference = typename AddConstIf<kIterConst, value_type>::type&;
+};
+
+// CRTP base class for generating iterator adaptors.
+// 'Sub' is the derived type, and 'Policy' encodes
+// all of the behavior for the adaptor.
+// Policy requirements:
+//   - type 'underlying_iterator': the underlying iterator type.
+//   - type 'adapted_traits': the traits of the adaptor.
+//   - static 'Extract(underlying_iterator)': convert iterator to reference.
+//
+template <typename Sub, typename Policy>
+class IteratorAdaptorBase {
+ private:
+  // Everything needed from the Policy type is expressed in this section.
+  using Iterator = typename Policy::underlying_iterator;
+  using OutTraits = typename Policy::adapted_traits;
+  static typename OutTraits::reference Extract(const Iterator& it) {
+    return Policy::Extract(it);
+  }
+
+ public:
+  using iterator_category = typename OutTraits::iterator_category;
+  using value_type = typename OutTraits::value_type;
+  using pointer = typename OutTraits::pointer;
+  using reference = typename OutTraits::reference;
+  using difference_type = typename OutTraits::difference_type;
+
+  IteratorAdaptorBase() : it_() {
+  }
+  // NOLINTNEXTLINE(runtime/explicit)
+  IteratorAdaptorBase(Iterator it) : it_(it) {
+  }
+
+  Sub& sub() {
+    return static_cast<Sub&>(*this);
+  }
+  const Sub& sub() const {
+    return static_cast<const Sub&>(*this);
+  }
+
+  const Iterator& base() const {
+    return it_;
+  }
+
+  reference get() const {
+    return Extract(base());
+  }
+  reference operator*() const {
+    return get();
+  }
+  pointer operator->() const {
+    return &get();
+  }
+  reference operator[](difference_type d) const {
+    return *(sub() + d);
+  }
+
+  Sub& operator++() {
+    ++it_;
+    return sub();
+  }
+  Sub& operator--() {
+    --it_;
+    return sub();
+  }
+  Sub operator++(int /*unused*/) {
+    return it_++;
+  }
+  Sub operator--(int /*unused*/) {
+    return it_--;
+  }
+
+  Sub& operator+=(difference_type d) {
+    it_ += d;
+    return sub();
+  }
+  Sub& operator-=(difference_type d) {
+    it_ -= d;
+    return sub();
+  }
+
+  bool operator==(Sub b) const {
+    return base() == b.base();
+  }
+  bool operator!=(Sub b) const {
+    return base() != b.base();
+  }
+  // These shouldn't be necessary, as implicit conversion from 'Iterator'
+  // should be enough to make such comparisons work.
+  bool operator==(Iterator b) const {
+    return *this == Sub(b);
+  }
+  bool operator!=(Iterator b) const {
+    return *this != Sub(b);
+  }
+
+  friend Sub operator+(Sub it, difference_type d) {
+    return it.base() + d;
+  }
+  friend Sub operator+(difference_type d, Sub it) {
+    return it + d;
+  }
+  friend Sub operator-(Sub it, difference_type d) {
+    return it.base() - d;
+  }
+  friend difference_type operator-(Sub a, Sub b) {
+    return a.base() - b.base();
+  }
+
+  friend bool operator<(Sub a, Sub b) {
+    return a.base() < b.base();
+  }
+  friend bool operator>(Sub a, Sub b) {
+    return a.base() > b.base();
+  }
+  friend bool operator<=(Sub a, Sub b) {
+    return a.base() <= b.base();
+  }
+  friend bool operator>=(Sub a, Sub b) {
+    return a.base() >= b.base();
+  }
+
+ private:
+  Iterator it_;
+};
+
+template <typename It>
+struct FirstPolicy {
+  using underlying_iterator = It;
+  using adapted_traits =
+      SynthIterTraits<underlying_iterator,
+                      typename std::iterator_traits<
+                          underlying_iterator>::value_type::first_type>;
+  static typename adapted_traits::reference Extract(
+      const underlying_iterator& it) {
+    return it->first;
+  }
+};
+
+template <typename It>
+struct SecondPolicy {
+  using underlying_iterator = It;
+  using adapted_traits =
+      SynthIterTraits<underlying_iterator,
+                      typename std::iterator_traits<
+                          underlying_iterator>::value_type::second_type>;
+  static typename adapted_traits::reference Extract(
+      const underlying_iterator& it) {
+    return it->second;
+  }
+};
+
+template <typename It>
+struct SecondPtrPolicy {
+  using underlying_iterator = It;
+  using adapted_traits =
+      PointeeSynthIterTraits<underlying_iterator,
+                             typename std::iterator_traits<
+                                 underlying_iterator>::value_type::second_type>;
+  static typename adapted_traits::reference Extract(
+      const underlying_iterator& it) {
+    return *it->second;
+  }
+};
+
+template <typename It>
+struct PtrPolicy {
+  using underlying_iterator = It;
+  using adapted_traits = PointeeSynthIterTraits<
+      underlying_iterator,
+      typename std::iterator_traits<underlying_iterator>::value_type>;
+  static typename adapted_traits::reference Extract(
+      const underlying_iterator& it) {
+    return **it;
+  }
+};
+
+}  // namespace internal
+
+// In both iterator adaptors, iterator_first<> and iterator_second<>,
+// we build a new iterator based on a parameterized iterator type, "It".
+// The value type, "Val" is determined by "It::value_type::first" or
+// "It::value_type::second", respectively.
+
+// iterator_first<> adapts an iterator to return the first value of a pair.
+// It is equivalent to calling it->first on every value.
+// Example:
+//
+// hash_map<string, int> values;
+// values["foo"] = 1;
+// values["bar"] = 2;
+// for (iterator_first<hash_map<string, int>::iterator> x = values.begin();
+//      x != values.end(); ++x) {
+//   printf("%s", x->c_str());
+// }
+template <typename It>
+struct iterator_first
+    : internal::IteratorAdaptorBase<iterator_first<It>,
+                                    internal::FirstPolicy<It>> {
+  using Base = internal::IteratorAdaptorBase<iterator_first<It>,
+                                             internal::FirstPolicy<It>>;
+  iterator_first() {
+  }
+  iterator_first(It it)  // NOLINT(runtime/explicit)
+      : Base(it) {
+  }
+  template <typename It2>
+  iterator_first(iterator_first<It2> o)  // NOLINT(runtime/explicit)
+      : Base(o.base()) {
+  }
+};
+
+template <typename It>
+iterator_first<It> make_iterator_first(It it) {
+  return iterator_first<It>(it);
+}
+
+// iterator_second<> adapts an iterator to return the second value of a pair.
+// It is equivalent to calling it->second on every value.
+// Example:
+//
+// hash_map<string, int> values;
+// values["foo"] = 1;
+// values["bar"] = 2;
+// for (iterator_second<hash_map<string, int>::iterator> x = values.begin();
+//      x != values.end(); ++x) {
+//   int v = *x;
+//   printf("%d", v);
+// }
+template <typename It>
+struct iterator_second
+    : internal::IteratorAdaptorBase<iterator_second<It>,
+                                    internal::SecondPolicy<It>> {
+  using Base = internal::IteratorAdaptorBase<iterator_second<It>,
+                                             internal::SecondPolicy<It>>;
+  iterator_second() {
+  }
+  iterator_second(It it)  // NOLINT(runtime/explicit)
+      : Base(it) {
+  }
+  template <typename It2>
+  iterator_second(iterator_second<It2> o)  // NOLINT(runtime/explicit)
+      : Base(o.base()) {
+  }
+};
+
+template <typename It>
+iterator_second<It> make_iterator_second(It it) {
+  return iterator_second<It>(it);
+}
+
+// iterator_second_ptr<> adapts an iterator to return the dereferenced second
+// value of a pair.
+// It is equivalent to calling *it->second on every value.
+// The same result can be achieved by composition
+// iterator_ptr<iterator_second<> >
+// Can be used with maps where values are regular pointers or pointers wrapped
+// into linked_ptr. This iterator adaptor can be used by classes to give their
+// clients access to some of their internal data without exposing too much of
+// it.
+//
+// Example:
+// class MyClass {
+//  public:
+//   MyClass(const string& s);
+//   string DebugString() const;
+// };
+// typedef hash_map<string, linked_ptr<MyClass> > MyMap;
+// typedef iterator_second_ptr<MyMap::iterator> MyMapValuesIterator;
+// MyMap values;
+// values["foo"].reset(new MyClass("foo"));
+// values["bar"].reset(new MyClass("bar"));
+// for (MyMapValuesIterator it = values.begin(); it != values.end(); ++it) {
+//   printf("%s", it->DebugString().c_str());
+// }
+template <typename It>
+struct iterator_second_ptr
+    : internal::IteratorAdaptorBase<iterator_second_ptr<It>,
+                                    internal::SecondPtrPolicy<It>> {
+  using Base = internal::IteratorAdaptorBase<iterator_second_ptr<It>,
+                                             internal::SecondPtrPolicy<It>>;
+  iterator_second_ptr() {
+  }
+  iterator_second_ptr(It it)  // NOLINT(runtime/explicit)
+      : Base(it) {
+  }
+  template <typename It2>
+  iterator_second_ptr(iterator_second_ptr<It2> o)  // NOLINT(runtime/explicit)
+      : Base(o.base()) {
+  }
+};
+
+template <typename It>
+iterator_second_ptr<It> make_iterator_second_ptr(It it) {
+  return iterator_second_ptr<It>(it);
+}
+
+// iterator_ptr<> adapts an iterator to return the dereferenced value.
+// With this adaptor you can write *it instead of **it, or it->something instead
+// of (*it)->something.
+// Can be used with vectors and lists where values are regular pointers
+// or pointers wrapped into linked_ptr. This iterator adaptor can be used by
+// classes to give their clients access to some of their internal data without
+// exposing too much of it.
+//
+// Example:
+// class MyClass {
+//  public:
+//   MyClass(const string& s);
+//   string DebugString() const;
+// };
+// typedef vector<linked_ptr<MyClass> > MyVector;
+// typedef iterator_ptr<MyVector::iterator> DereferencingIterator;
+// MyVector values;
+// values.push_back(make_linked_ptr(new MyClass("foo")));
+// values.push_back(make_linked_ptr(new MyClass("bar")));
+// for (DereferencingIterator it = values.begin(); it != values.end(); ++it) {
+//   printf("%s", it->DebugString().c_str());
+// }
+//
+// Without iterator_ptr you would have to do (*it)->DebugString()
+template <typename It, typename Ptr /* ignored */ = void>
+struct iterator_ptr : internal::IteratorAdaptorBase<iterator_ptr<It, Ptr>,
+                                                    internal::PtrPolicy<It>> {
+  using Base = internal::IteratorAdaptorBase<iterator_ptr<It, Ptr>,
+                                             internal::PtrPolicy<It>>;
+  iterator_ptr() {
+  }
+  iterator_ptr(It it)  // NOLINT(runtime/explicit)
+      : Base(it) {
+  }
+  template <typename It2>
+  iterator_ptr(iterator_ptr<It2> o)  // NOLINT(runtime/explicit)
+      : Base(o.base()) {
+  }
+};
+
+template <typename It>
+iterator_ptr<It> make_iterator_ptr(It it) {
+  return iterator_ptr<It>(it);
+}
+
+namespace internal {
+
+// Template that uses SFINAE to inspect Container abilities:
+// . Set has_size_type true, iff T::size_type is defined
+// . Define size_type as T::size_type if defined, or size_t otherwise
+template <typename C>
+struct container_traits {
+ private:
+  // Test for availability of C::size_type.
+  template <typename U, typename = void>
+  struct test_size_type : std::false_type {};
+  template <typename U>
+  struct test_size_type<U, absl::void_t<typename U::size_type>>
+      : std::true_type {};
+
+  // Conditional provisioning of a size_type which defaults to size_t.
+  template <bool Cond, typename U = void>
+  struct size_type_def {
+    using type = typename U::size_type;
+  };
+  template <typename U>
+  struct size_type_def<false, U> {
+    using type = size_t;
+  };
+
+ public:
+  // Determine whether C::size_type is available.
+  static const bool has_size_type = test_size_type<C>::value;
+
+  // Provide size_type as either C::size_type if available, or as size_t.
+  using size_type = typename size_type_def<has_size_type, C>::type;
+};
+
+template <typename C>
+struct IterGenerator {
+  using container_type = C;
+  using iterator = typename C::iterator;
+  using const_iterator = typename C::const_iterator;
+
+  static iterator begin(container_type& c) {  // NOLINT(runtime/references)
+    return c.begin();
+  }
+  static iterator end(container_type& c) {  // NOLINT(runtime/references)
+    return c.end();
+  }
+  static const_iterator begin(const container_type& c) {
+    return c.begin();
+  }
+  static const_iterator end(const container_type& c) {
+    return c.end();
+  }
+};
+
+template <typename SubIterGenerator>
+struct ReversingIterGeneratorAdaptor {
+  using container_type = typename SubIterGenerator::container_type;
+  using iterator = std::reverse_iterator<typename SubIterGenerator::iterator>;
+  using const_iterator =
+      std::reverse_iterator<typename SubIterGenerator::const_iterator>;
+
+  static iterator begin(container_type& c) {  // NOLINT(runtime/references)
+    return iterator(SubIterGenerator::end(c));
+  }
+  static iterator end(container_type& c) {  // NOLINT(runtime/references)
+    return iterator(SubIterGenerator::begin(c));
+  }
+  static const_iterator begin(const container_type& c) {
+    return const_iterator(SubIterGenerator::end(c));
+  }
+  static const_iterator end(const container_type& c) {
+    return const_iterator(SubIterGenerator::begin(c));
+  }
+};
+
+// C:             the container type
+// Iter:          the type of mutable iterator to generate
+// ConstIter:     the type of constant iterator to generate
+// IterGenerator: a policy type that returns native iterators from a C
+template <typename C,
+          typename Iter,
+          typename ConstIter,
+          typename IterGenerator = internal::IterGenerator<C>>
+class iterator_view_helper {
+ public:
+  using container_type = C;
+  using iterator = Iter;
+  using const_iterator = ConstIter;
+  using value_type = typename std::iterator_traits<iterator>::value_type;
+  using size_type = typename internal::container_traits<C>::size_type;
+
+  explicit iterator_view_helper(
+      container_type& c)  // NOLINT(runtime/references)
+      : c_(&c) {
+  }
+
+  iterator begin() {
+    return iterator(IterGenerator::begin(container()));
+  }
+  iterator end() {
+    return iterator(IterGenerator::end(container()));
+  }
+  const_iterator begin() const {
+    return const_iterator(IterGenerator::begin(container()));
+  }
+  const_iterator end() const {
+    return const_iterator(IterGenerator::end(container()));
+  }
+  const_iterator cbegin() const {
+    return begin();
+  }
+  const_iterator cend() const {
+    return end();
+  }
+  const container_type& container() const {
+    return *c_;
+  }
+  container_type& container() {
+    return *c_;
+  }
+
+  bool empty() const {
+    return begin() == end();
+  }
+  size_type size() const {
+    return c_->size();
+  }
+
+ private:
+  container_type* c_;
+};
+
+template <typename C,
+          typename ConstIter,
+          typename IterGenerator = internal::IterGenerator<C>>
+class const_iterator_view_helper {
+ public:
+  using container_type = C;
+  using const_iterator = ConstIter;
+  using value_type = typename std::iterator_traits<const_iterator>::value_type;
+  using size_type = typename internal::container_traits<C>::size_type;
+
+  explicit const_iterator_view_helper(const container_type& c) : c_(&c) {
+  }
+
+  // Allow implicit conversion from the corresponding iterator_view_helper.
+  // Erring on the side of constness should be allowed. E.g.:
+  //    MyMap m;
+  //    key_view_type<MyMap>::type keys = key_view(m);  // ok
+  //    key_view_type<const MyMap>::type const_keys = key_view(m);  // ok
+  template <typename Iter>
+  const_iterator_view_helper(const iterator_view_helper<container_type,
+                                                        Iter,
+                                                        const_iterator,
+                                                        IterGenerator>& v)
+      : c_(&v.container()) {
+  }
+
+  const_iterator begin() const {
+    return const_iterator(IterGenerator::begin(container()));
+  }
+  const_iterator end() const {
+    return const_iterator(IterGenerator::end(container()));
+  }
+  const_iterator cbegin() const {
+    return begin();
+  }
+  const_iterator cend() const {
+    return end();
+  }
+  const container_type& container() const {
+    return *c_;
+  }
+
+  bool empty() const {
+    return begin() == end();
+  }
+  size_type size() const {
+    return c_->size();
+  }
+
+ private:
+  const container_type* c_;
+};
+
+}  // namespace internal
+
+// Note: The views like value_view, key_view should be in gtl namespace.
+// Currently there are lot of callers that reference the methods in the global
+// namespace.
+//
+// Traits to provide a typedef abstraction for the return value
+// of the key_view() and value_view() functions, such that
+// they can be declared as:
+//
+//    template <typename C> key_view_t<C> key_view(C& c);
+//    template <typename C> value_view_t<C> value_view(C& c);
+//
+// This abstraction allows callers of these functions to use readable
+// type names, and allows the maintainers of iterator_adaptors.h to
+// change the return types if needed without updating callers.
+
+template <typename C>
+struct key_view_type {
+  using type = internal::iterator_view_helper<
+      C,
+      iterator_first<typename C::iterator>,
+      iterator_first<typename C::const_iterator>>;
+};
+
+template <typename C>
+struct key_view_type<const C> {
+  using type = internal::
+      const_iterator_view_helper<C, iterator_first<typename C::const_iterator>>;
+};
+
+template <typename C>
+struct value_view_type {
+  using type = internal::iterator_view_helper<
+      C,
+      iterator_second<typename C::iterator>,
+      iterator_second<typename C::const_iterator>>;
+};
+
+template <typename C>
+struct value_view_type<const C> {
+  using type = internal::const_iterator_view_helper<
+      C,
+      iterator_second<typename C::const_iterator>>;
+};
+
+// The key_view and value_view functions provide pretty ways to iterate either
+// the keys or the values of a map using range based for loops.
+//
+// Example:
+//    hash_map<int, string> my_map;
+//    ...
+//    for (string val : value_view(my_map)) {
+//      ...
+//    }
+//
+// Note: If you pass a temporary container to key_view or value_view, be careful
+// that the temporary container outlives the wrapper view to avoid dangling
+// references.
+// This is fine:  PublishAll(value_view(Make());
+// This is not:   for (const auto& v : value_view(Make())) Publish(v);
+
+template <typename C>
+typename key_view_type<C>::type key_view(
+    C& map) {  // NOLINT(runtime/references)
+  return typename key_view_type<C>::type(map);
+}
+
+template <typename C>
+typename key_view_type<const C>::type key_view(const C& map) {
+  return typename key_view_type<const C>::type(map);
+}
+
+template <typename C>
+typename value_view_type<C>::type value_view(
+    C& map) {  // NOLINT(runtime/references)
+  return typename value_view_type<C>::type(map);
+}
+
+template <typename C>
+typename value_view_type<const C>::type value_view(const C& map) {
+  return typename value_view_type<const C>::type(map);
+}
+
+// Abstract container view that dereferences the pointer-like .second member
+// of a container's std::pair elements, such as the elements of std::map<K,V*>
+// or of std::vector<std::pair<K,V*>>.
+//
+// Example:
+//   map<int, string*> elements;
+//   for (const string& element : deref_second_view(elements)) {
+//     ...
+//   }
+//
+// Note: If you pass a temporary container to deref_second_view, be careful that
+// the temporary container outlives the deref_second_view to avoid dangling
+// references.
+// This is fine:  PublishAll(deref_second_view(Make());
+// This is not:   for (const auto& v : deref_second_view(Make())) {
+//                  Publish(v);
+//                }
+
+template <typename C>
+struct deref_second_view_type {
+  using type = internal::iterator_view_helper<
+      C,
+      iterator_second_ptr<typename C::iterator>,
+      iterator_second_ptr<typename C::const_iterator>>;
+};
+
+template <typename C>
+struct deref_second_view_type<const C> {
+  using type = internal::const_iterator_view_helper<
+      C,
+      iterator_second_ptr<typename C::const_iterator>>;
+};
+
+template <typename C>
+typename deref_second_view_type<C>::type deref_second_view(
+    C& map) {  // NOLINT(runtime/references)
+  return typename deref_second_view_type<C>::type(map);
+}
+
+template <typename C>
+typename deref_second_view_type<const C>::type deref_second_view(const C& map) {
+  return typename deref_second_view_type<const C>::type(map);
+}
+
+// Abstract container view that dereferences pointer elements.
+//
+// Example:
+//   vector<string*> elements;
+//   for (const string& element : deref_view(elements)) {
+//     ...
+//   }
+//
+// Note: If you pass a temporary container to deref_view, be careful that the
+// temporary container outlives the deref_view to avoid dangling references.
+// This is fine:  PublishAll(deref_view(Make());
+// This is not:   for (const auto& v : deref_view(Make())) { Publish(v); }
+
+template <typename C>
+struct deref_view_type {
+  using type =
+      internal::iterator_view_helper<C,
+                                     iterator_ptr<typename C::iterator>,
+                                     iterator_ptr<typename C::const_iterator>>;
+};
+
+template <typename C>
+struct deref_view_type<const C> {
+  using type = internal::
+      const_iterator_view_helper<C, iterator_ptr<typename C::const_iterator>>;
+};
+
+template <typename C>
+typename deref_view_type<C>::type deref_view(
+    C& c) {  // NOLINT(runtime/references)
+  return typename deref_view_type<C>::type(c);
+}
+
+template <typename C>
+typename deref_view_type<const C>::type deref_view(const C& c) {
+  return typename deref_view_type<const C>::type(c);
+}
+
+// Abstract container view that iterates backwards.
+//
+// Example:
+//   vector<string> elements;
+//   for (const string& element : reversed_view(elements)) {
+//     ...
+//   }
+//
+// Note: If you pass a temporary container to reversed_view_type, be careful
+// that the temporary container outlives the reversed_view to avoid dangling
+// references. This is fine:  PublishAll(reversed_view(Make());
+// This is not:   for (const auto& v : reversed_view(Make())) { Publish(v); }
+
+template <typename C>
+struct reversed_view_type {
+ private:
+  using policy =
+      internal::ReversingIterGeneratorAdaptor<internal::IterGenerator<C>>;
+
+ public:
+  using type = internal::iterator_view_helper<C,
+                                              typename policy::iterator,
+                                              typename policy::const_iterator,
+                                              policy>;
+};
+
+template <typename C>
+struct reversed_view_type<const C> {
+ private:
+  using policy =
+      internal::ReversingIterGeneratorAdaptor<internal::IterGenerator<C>>;
+
+ public:
+  using type = internal::
+      const_iterator_view_helper<C, typename policy::const_iterator, policy>;
+};
+
+template <typename C>
+typename reversed_view_type<C>::type reversed_view(
+    C& c) {  // NOLINT(runtime/references)
+  return typename reversed_view_type<C>::type(c);
+}
+
+template <typename C>
+typename reversed_view_type<const C>::type reversed_view(const C& c) {
+  return typename reversed_view_type<const C>::type(c);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_ITERATOR_ADAPTORS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log.h
new file mode 100644
index 0000000..0681eaf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log.h	
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_LOG_H_
+#define FIRESTORE_CORE_SRC_UTIL_LOG_H_
+
+#include <string>
+
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Levels used when logging messages.
+enum LogLevel {
+  // Debug Log Level
+  kLogLevelDebug,
+  // Notice Log Level
+  kLogLevelNotice,
+  // Warning Log Level
+  kLogLevelWarning,
+  // Error Log Level
+  kLogLevelError,
+};
+
+// Log a message if kLogLevelDebug is enabled. Arguments are not evaluated if
+// logging is disabled.
+//
+// @param format A format string suitable for use with `util::StringFormat`
+// @param ... C++ variadic arguments that match the format string. Not C
+//     varargs.
+#define LOG_DEBUG(...)                                         \
+  do {                                                         \
+    namespace _util = firebase::firestore::util;               \
+    if (_util::LogIsLoggable(_util::kLogLevelDebug)) {         \
+      std::string _message = _util::StringFormat(__VA_ARGS__); \
+      _util::LogMessage(_util::kLogLevelDebug, _message);      \
+    }                                                          \
+  } while (0)
+
+// Log a message if kLogLevelWarn is enabled (it is by default). Arguments are
+// not evaluated if logging is disabled.
+//
+// @param format A format string suitable for use with `util::StringFormat`
+// @param ... C++ variadic arguments that match the format string. Not C
+//     varargs.
+#define LOG_WARN(...)                                          \
+  do {                                                         \
+    namespace _util = firebase::firestore::util;               \
+    if (_util::LogIsLoggable(_util::kLogLevelWarning)) {       \
+      std::string _message = _util::StringFormat(__VA_ARGS__); \
+      _util::LogMessage(_util::kLogLevelWarning, _message);    \
+    }                                                          \
+  } while (0)
+
+// Log a message if kLogLevelError is enabled (it is by default). Arguments are
+// not evaluated if logging is disabled.
+//
+// @param format A format string suitable for use with `util::StringFormat`
+// @param ... C++ variadic arguments that match the format string. Not C
+//     varargs.
+#define LOG_ERROR(...)                                         \
+  do {                                                         \
+    namespace _util = firebase::firestore::util;               \
+    if (_util::LogIsLoggable(_util::kLogLevelError)) {         \
+      std::string _message = _util::StringFormat(__VA_ARGS__); \
+      _util::LogMessage(_util::kLogLevelError, _message);      \
+    }                                                          \
+  } while (0)
+
+// Tests to see if the given log level is loggable.
+bool LogIsLoggable(LogLevel level);
+
+// Is debug logging enabled?
+inline bool LogIsDebugEnabled() {
+  return LogIsLoggable(kLogLevelDebug);
+}
+
+// All messages at or above the specified log level value are displayed.
+void LogSetLevel(LogLevel level);
+
+// Log a message at the given level.
+void LogMessage(LogLevel log_level, const std::string& message);
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_LOG_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log_apple.mm
new file mode 100644
index 0000000..006fabc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/log_apple.mm	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/log.h"
+
+#if defined(__APPLE__)
+
+#import <Foundation/Foundation.h>
+
+#include <cstdarg>
+#include <string>
+
+#import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
+
+#include "Firestore/core/src/util/string_apple.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+namespace {
+
+const FIRLoggerService kFIRLoggerFirestore = @"[Firebase/Firestore]";
+
+// Translates a C++ LogLevel to the equivalent Objective-C FIRLoggerLevel
+FIRLoggerLevel ToFIRLoggerLevel(LogLevel level) {
+  switch (level) {
+    case kLogLevelDebug:
+      return FIRLoggerLevelDebug;
+    case kLogLevelNotice:
+      return FIRLoggerLevelNotice;
+    case kLogLevelWarning:
+      return FIRLoggerLevelWarning;
+    case kLogLevelError:
+      return FIRLoggerLevelError;
+    default:
+      // Unsupported log level. FIRSetLoggerLevel will deal with it.
+      return static_cast<FIRLoggerLevel>(-1);
+  }
+}
+
+// Actually logs a message via FIRLogger. This must be a C varargs function
+// so that we can call FIRLogBasic which takes a `va_list`.
+void LogMessageV(LogLevel level, NSString* format, ...) {
+  va_list list;
+  va_start(list, format);
+
+  FIRLogBasic(ToFIRLoggerLevel(level), kFIRLoggerFirestore, @"I-FST000001",
+              format, list);
+
+  va_end(list);
+}
+
+}  // namespace
+
+void LogSetLevel(LogLevel level) {
+  FIRSetLoggerLevel(ToFIRLoggerLevel(level));
+}
+
+// Note that FIRLogger's default level can be changed by persisting a
+// debug_mode setting in user defaults. Check for defaults getting in your way
+// with:
+//
+//   defaults read firestore_util_test
+//
+// You can change it with:
+//
+//   defaults write firestore_util_test /google/firebase/debug_mode NO
+
+bool LogIsLoggable(LogLevel level) {
+  return FIRIsLoggableLevel(ToFIRLoggerLevel(level), false);
+}
+
+void LogMessage(LogLevel level, const std::string& message) {
+  LogMessageV(level, @"%@", MakeNSString(message));
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(__APPLE__)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/nullability.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/nullability.h
new file mode 100644
index 0000000..20ea9d8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/nullability.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_NULLABILITY_H_
+#define FIRESTORE_CORE_SRC_UTIL_NULLABILITY_H_
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Define NS_ASSUME_NONNULL_BEGIN for straight C++ so that everything gets the
+// correct nullability specifier.
+#if !defined(NS_ASSUME_NONNULL_BEGIN)
+#if __clang__
+#define NS_ASSUME_NONNULL_BEGIN _Pragma("clang assume_nonnull begin")
+#define NS_ASSUME_NONNULL_END _Pragma("clang assume_nonnull end")
+
+#else  // !__clang__
+#define NS_ASSUME_NONNULL_BEGIN
+#define NS_ASSUME_NONNULL_END
+#define _Nonnull
+#define _Nullable
+
+#endif  // __clang__
+#endif  // !defined(NS_ASSUME_NONNULL_BEGIN)
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_NULLABILITY_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.cc
new file mode 100644
index 0000000..81a3f50
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.cc	
@@ -0,0 +1,624 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/ordered_code.h"
+
+#include "Firestore/core/src/util/bits.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/base/internal/endian.h"
+#include "absl/base/internal/unaligned_access.h"
+#include "absl/base/port.h"
+
+#if !defined(ABSL_IS_LITTLE_ENDIAN) && !defined(ABSL_IS_BIG_ENDIAN)
+#error \
+    "Unsupported byte order: Either ABSL_IS_BIG_ENDIAN or " \
+       "ABSL_IS_LITTLE_ENDIAN must be defined"
+#endif
+
+#define UNALIGNED_LOAD32 ABSL_INTERNAL_UNALIGNED_LOAD32
+#define UNALIGNED_LOAD64 ABSL_INTERNAL_UNALIGNED_LOAD64
+#define UNALIGNED_STORE32 ABSL_INTERNAL_UNALIGNED_STORE32
+#define UNALIGNED_STORE64 ABSL_INTERNAL_UNALIGNED_STORE64
+
+// We encode a string in different ways depending on whether the item
+// should be in lexicographically increasing or decreasing order.
+//
+//
+// Lexicographically increasing order
+//
+// We want a string-to-string mapping F(x) such that for any two strings
+//
+//      x < y   =>   F(x) < F(y)
+//
+// In addition to the normal characters '\x00' through '\xff', we want to
+// encode a few extra symbols in strings:
+//
+//      <sep>           Separator between items
+//      <infinity>      Infinite string
+//
+// Therefore we need an alphabet with at least 258 symbols.  Each
+// character '\1' through '\xfe' is mapped to itself.  The other four are
+// encoded into two-letter sequences starting with '\0' and '\xff':
+//
+//      <sep>           encoded as =>           \0\1
+//      \0              encoded as =>           \0\xff
+//      \xff            encoded as =>           \xff\x00
+//      <infinity>      encoded as =>           \xff\xff
+//
+// The remaining two-letter sequences starting with '\0' and '\xff' are
+// currently unused.
+//
+// F(<infinity>) is defined above.  For any finite string x, F(x) is the
+// the encodings of x's characters followed by the encoding for <sep>.  The
+// ordering of two finite strings is the same as the ordering of the
+// respective characters at the first position where they differ, which in
+// turn is the same as the ordering of the encodings of those two
+// characters.  Moreover, for every finite string x, F(x) < F(<infinity>).
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+static const char kEscape1 = '\000';
+static const char kNullCharacter = '\xff';  // Combined with kEscape1
+static const char kSeparator = '\001';      // Combined with kEscape1
+
+static const char kEscape2 = '\xff';
+static const char kInfinity = '\xff';     // Combined with kEscape2
+static const char kFFCharacter = '\000';  // Combined with kEscape2
+
+static const char kEscape1_Separator[2] = {kEscape1, kSeparator};
+
+/** Append to "*dest" the "len" bytes starting from "*src". */
+inline static void AppendBytes(std::string* dest, const char* src, size_t len) {
+  dest->append(src, len);
+}
+
+inline static bool IsSpecialByte(char c) {
+  return ((unsigned char)(c + 1)) < 2;
+}
+
+/**
+ * Returns 0 if one or more of the bytes in the specified uint32 value
+ * are the special values 0 or 255, and returns 4 otherwise.  The
+ * result of this routine can be added to "p" to either advance past
+ * the next 4 bytes if they do not contain a special byte, or to
+ * remain on this set of four bytes if they contain the next special
+ * byte occurrence.
+ *
+ * REQUIRES: v_32 is the value of loading the next 4 bytes from "*p" (we
+ * pass in v_32 rather than loading it because in some cases, the client
+ * may already have the value in a register: "p" is just used for
+ * assertion checking).
+ */
+inline static int AdvanceIfNoSpecialBytes(uint32_t v_32, const char* p) {
+  HARD_ASSERT(UNALIGNED_LOAD32(p) == v_32);
+  // See comments in SkipToNextSpecialByte if you wish to
+  // understand this expression (which checks for the occurrence
+  // of the special byte values 0 or 255 in any of the bytes of v_32).
+  if ((v_32 - 0x01010101u) & ~(v_32 + 0x01010101u) & 0x80808080u) {
+    // Special byte is in p[0..3]
+    HARD_ASSERT(IsSpecialByte(p[0]) || IsSpecialByte(p[1]) ||
+                IsSpecialByte(p[2]) || IsSpecialByte(p[3]));
+    return 0;
+  } else {
+    HARD_ASSERT(!IsSpecialByte(p[0]));
+    HARD_ASSERT(!IsSpecialByte(p[1]));
+    HARD_ASSERT(!IsSpecialByte(p[2]));
+    HARD_ASSERT(!IsSpecialByte(p[3]));
+    return 4;
+  }
+}
+
+/**
+ * Return a pointer to the first byte in the range "[start..limit)"
+ * whose value is 0 or 255 (kEscape1 or kEscape2).  If no such byte
+ * exists in the range, returns "limit".
+ */
+inline static const char* SkipToNextSpecialByte(const char* start,
+                                                const char* limit) {
+  // If these constants were ever changed, this routine needs to change
+  static_assert(kEscape1 == 0, "bit fiddling needs readjusting");
+  static_assert((kEscape2 & 0xff) == 255, "bit fiddling needs readjusting");
+  const char* p = start;
+  while (p + 8 <= limit) {
+    // Find out if any of the next 8 bytes are either 0 or 255 (our
+    // two characters that require special handling).  We do this using
+    // the technique described in:
+    //
+    //    http://graphics.stanford.edu/~seander/bithacks.html#HasLessInWord
+    //
+    // We use the test (x + 1) < 2 to check x = 0 or -1(255)
+    //
+    // If x is a byte value (0x00..0xff):
+    // (x - 0x01) & 0x80 is true only when x = 0x81..0xff, 0x00
+    // ~(x + 0x01) & 0x80 is true only when x = 0x00..0x7e, 0xff
+    // The intersection of the above two sets is x = 0x00 or 0xff.
+    // We can ignore carry between bytes because only x = 0x00 or 0xff
+    // can cause carry in the expression -- and such x already makes the
+    // result value non-zero.
+    uint64_t v = UNALIGNED_LOAD64(p);
+    bool hasZeroOr255Byte = (v - 0x0101010101010101ull) &
+                            ~(v + 0x0101010101010101ull) &
+                            0x8080808080808080ull;
+    if (!hasZeroOr255Byte) {
+      // No special values in the next 8 bytes
+      p += 8;
+    } else {
+// We know the next 8 bytes have a special byte: find it
+#ifdef ABSL_IS_LITTLE_ENDIAN
+      uint32_t v_32 = static_cast<uint32_t>(v);  // Low 32 bits of v
+#else
+      uint32_t v_32 = UNALIGNED_LOAD32(p);
+#endif
+      // Test 32 bits at once to see if special byte is in next 4 bytes
+      // or the following 4 bytes
+      p += AdvanceIfNoSpecialBytes(v_32, p);
+      if (IsSpecialByte(p[0])) return p;
+      if (IsSpecialByte(p[1])) return p + 1;
+      if (IsSpecialByte(p[2])) return p + 2;
+      HARD_ASSERT(IsSpecialByte(p[3]));  // Last byte must be the special one
+      return p + 3;
+    }
+  }
+  if (p + 4 <= limit) {
+    uint32_t v_32 = UNALIGNED_LOAD32(p);
+    p += AdvanceIfNoSpecialBytes(v_32, p);
+  }
+  while (p < limit && !IsSpecialByte(*p)) {
+    p++;
+  }
+  return p;
+}
+
+// Expose SkipToNextSpecialByte for testing purposes
+const char* OrderedCode::TEST_SkipToNextSpecialByte(const char* start,
+                                                    const char* limit) {
+  return SkipToNextSpecialByte(start, limit);
+}
+
+/**
+ * Helper routine to encode "s" and append to "*dest", escaping special
+ * characters.
+ */
+inline static void EncodeStringFragment(std::string* dest,
+                                        absl::string_view s) {
+  const char* p = s.data();
+  const char* limit = p + s.size();
+  const char* copy_start = p;
+  while (true) {
+    p = SkipToNextSpecialByte(p, limit);
+    if (p >= limit) break;  // No more special characters that need escaping
+    char c = *(p++);
+    HARD_ASSERT(IsSpecialByte(c));
+    if (c == kEscape1) {
+      AppendBytes(dest, copy_start, static_cast<size_t>(p - copy_start) - 1);
+      dest->push_back(kEscape1);
+      dest->push_back(kNullCharacter);
+      copy_start = p;
+    } else {
+      HARD_ASSERT(c == kEscape2);
+      AppendBytes(dest, copy_start, static_cast<size_t>(p - copy_start) - 1);
+      dest->push_back(kEscape2);
+      dest->push_back(kFFCharacter);
+      copy_start = p;
+    }
+  }
+  if (p > copy_start) {
+    AppendBytes(dest, copy_start, static_cast<size_t>(p - copy_start));
+  }
+}
+
+void OrderedCode::WriteString(std::string* dest, absl::string_view s) {
+  EncodeStringFragment(dest, s);
+  AppendBytes(dest, kEscape1_Separator, 2);
+}
+
+/**
+ * Return number of bytes needed to encode the non-length portion
+ * of val in ordered coding.  Returns number in range [0,8].
+ */
+static inline unsigned int OrderedNumLength(uint64_t val) {
+  const int lg = Bits::Log2Floor64(val);  // -1 if val==0
+  return static_cast<unsigned int>(lg + 1 + 7) / 8;
+}
+
+/**
+ * Append n bytes from src to *dst.
+ * REQUIRES: n <= 9
+ * REQUIRES: src[0..8] are readable bytes (even if n is smaller)
+ *
+ * If we use string::append() instead of this routine, it increases the
+ * runtime of WriteNumIncreasing from ~9ns to ~13ns.
+ */
+static inline void AppendUpto9(std::string* dst,
+                               const char* src,
+                               unsigned int n) {
+  dst->append(src, 9);         // Fixed-length append
+  const size_t extra = 9 - n;  // How many extra bytes we added
+  dst->erase(dst->size() - extra, extra);
+}
+
+void OrderedCode::WriteNumIncreasing(std::string* dest, uint64_t val) {
+  // Values are encoded with a single byte length prefix, followed
+  // by the actual value in big-endian format with leading 0 bytes
+  // dropped.
+
+  // 8 bytes for value plus one byte for length.  In addition, we have
+  // 8 extra bytes at the end so that we can have a fixed-length append
+  // call on *dest.
+  char buf[17];
+
+  UNALIGNED_STORE64(buf + 1,
+                    absl::ghtonll(val));  // buf[0] may be needed for length
+  const unsigned int length = OrderedNumLength(val);
+  char* start = buf + 9 - length - 1;
+  *start = static_cast<char>(length);
+  AppendUpto9(dest, start, length + 1);
+}
+
+inline static void WriteInfinityInternal(std::string* dest) {
+  // Make an array so that we can just do one string operation for performance
+  static const char buf[2] = {kEscape2, kInfinity};
+  dest->append(buf, 2);
+}
+
+void OrderedCode::WriteInfinity(std::string* dest) {
+  WriteInfinityInternal(dest);
+}
+
+void OrderedCode::WriteTrailingString(std::string* dest,
+                                      absl::string_view str) {
+  dest->append(str.data(), str.size());
+}
+
+/**
+ * Parse the encoding of a string previously encoded with or without
+ * inversion.  If parse succeeds, return true, consume encoding from
+ * "*src", and if result != NULL append the decoded string to "*result".
+ * Otherwise, return false and leave both undefined.
+ */
+inline static bool ReadStringInternal(absl::string_view* src,
+                                      std::string* result) {
+  const char* start = src->data();
+  const char* string_limit = src->data() + src->size();
+
+  // We only scan up to "limit-2" since a valid string must end with
+  // a two character terminator: 'kEscape1 kSeparator'
+  const char* limit = string_limit - 1;
+  const char* copy_start = start;
+  while (true) {
+    start = SkipToNextSpecialByte(start, limit);
+    if (start >= limit) break;  // No terminator sequence found
+    const char c = *(start++);
+    // If inversion is required, instead of inverting 'c', we invert the
+    // character constants to which 'c' is compared.  We get the same
+    // behavior but save the runtime cost of inverting 'c'.
+    HARD_ASSERT(IsSpecialByte(c));
+    if (c == kEscape1) {
+      if (result) {
+        AppendBytes(result, copy_start,
+                    static_cast<size_t>(start - copy_start) - 1);
+      }
+      // kEscape1 kSeparator ends component
+      // kEscape1 kNullCharacter represents '\0'
+      const char next = *(start++);
+      if (next == kSeparator) {
+        src->remove_prefix(static_cast<size_t>(start - src->data()));
+        return true;
+      } else if (next == kNullCharacter) {
+        if (result) {
+          *result += '\0';
+        }
+      } else {
+        return false;
+      }
+      copy_start = start;
+    } else {
+      HARD_ASSERT(c == kEscape2);
+      if (result) {
+        AppendBytes(result, copy_start,
+                    static_cast<size_t>(start - copy_start) - 1);
+      }
+      // kEscape2 kFFCharacter represents '\xff'
+      // kEscape2 kInfinity is an error
+      const char next = *(start++);
+      if (next == kFFCharacter) {
+        if (result) {
+          *result += '\xff';
+        }
+      } else {
+        return false;
+      }
+      copy_start = start;
+    }
+  }
+  return false;
+}
+
+bool OrderedCode::ReadString(absl::string_view* src, std::string* result) {
+  return ReadStringInternal(src, result);
+}
+
+bool OrderedCode::ReadNumIncreasing(absl::string_view* src, uint64_t* result) {
+  if (src->empty()) {
+    return false;  // Not enough bytes
+  }
+
+  // Decode length byte
+  const size_t len = static_cast<size_t>((*src)[0]);
+
+  // If len > 0 and src is longer than 1, the first byte of "payload"
+  // must be non-zero (otherwise the encoding is not minimal).
+  // In opt mode, we don't enforce that encodings must be minimal.
+  HARD_ASSERT(0 == len || src->size() == 1 || (*src)[1] != '\0');
+
+  if (len + 1 > src->size() || len > 8) {
+    return false;  // Not enough bytes or too many bytes
+  }
+
+  if (result) {
+    uint64_t tmp = 0;
+    for (size_t i = 0; i < len; i++) {
+      tmp <<= 8;
+      tmp |= static_cast<unsigned char>((*src)[1 + i]);
+    }
+    *result = tmp;
+  }
+  src->remove_prefix(len + 1);
+  return true;
+}
+
+inline static bool ReadInfinityInternal(absl::string_view* src) {
+  if (src->size() >= 2 && ((*src)[0] == kEscape2) && ((*src)[1] == kInfinity)) {
+    src->remove_prefix(2);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+bool OrderedCode::ReadInfinity(absl::string_view* src) {
+  return ReadInfinityInternal(src);
+}
+
+inline static bool ReadStringOrInfinityInternal(absl::string_view* src,
+                                                std::string* result,
+                                                bool* inf) {
+  if (ReadInfinityInternal(src)) {
+    if (inf) *inf = true;
+    return true;
+  }
+
+  // We don't use ReadStringInternal here because that would inline
+  // the whole encoded string parsing code here.  Depending on INVERT, only
+  // one of the following two calls will be generated at compile time.
+  bool success = OrderedCode::ReadString(src, result);
+  if (success) {
+    if (inf) *inf = false;
+    return true;
+  } else {
+    return false;
+  }
+}
+
+bool OrderedCode::ReadStringOrInfinity(absl::string_view* src,
+                                       std::string* result,
+                                       bool* inf) {
+  return ReadStringOrInfinityInternal(src, result, inf);
+}
+
+bool OrderedCode::ReadTrailingString(absl::string_view* src,
+                                     std::string* result) {
+  if (result) result->assign(src->data(), src->size());
+  src->remove_prefix(src->size());
+  return true;
+}
+
+void OrderedCode::TEST_Corrupt(std::string* str, int k) {
+  int seen_seps = 0;
+  for (size_t i = 0; i < str->size() - 1; i++) {
+    if ((*str)[i] == kEscape1 && (*str)[i + 1] == kSeparator) {
+      seen_seps++;
+      if (seen_seps == k) {
+        (*str)[i + 1] = kSeparator + 1;
+        return;
+      }
+    }
+  }
+}
+
+// Signed number encoding/decoding /////////////////////////////////////
+//
+// The format is as follows:
+//
+// The first bit (the most significant bit of the first byte)
+// represents the sign, 0 if the number is negative and
+// 1 if the number is >= 0.
+//
+// Any unbroken sequence of successive bits with the same value as the sign
+// bit, up to 9 (the 8th and 9th are the most significant bits of the next
+// byte), are size bits that count the number of bytes after the first byte.
+// That is, the total length is between 1 and 10 bytes.
+//
+// The value occupies the bits after the sign bit and the "size bits"
+// till the end of the string, in network byte order.  If the number
+// is negative, the bits are in 2-complement.
+//
+//
+// Example 1: number 0x424242 -> 4 byte big-endian hex string 0xf0424242:
+//
+// +---------------+---------------+---------------+---------------+
+//  1 1 1 1 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0
+// +---------------+---------------+---------------+---------------+
+//  ^ ^ ^ ^   ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
+//  | | | |   | | | | | | | | | | | | | | | | | | | | | | | | | | |
+//  | | | |   payload: the remaining bits after the sign and size bits
+//  | | | |            and the delimiter bit, the value is 0x424242
+//  | | | |
+//  | size bits: 3 successive bits with the same value as the sign bit
+//  |            (followed by a delimiter bit with the opposite value)
+//  |            mean that there are 3 bytes after the first byte, 4 total
+//  |
+//  sign bit: 1 means that the number is non-negative
+//
+// Example 2: negative number -0x800 -> 2 byte big-endian hex string 0x3800:
+//
+// +---------------+---------------+
+//  0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0
+// +---------------+---------------+
+//  ^ ^   ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
+//  | |   | | | | | | | | | | | | | | | | | | | | | | | | | | |
+//  | |   payload: the remaining bits after the sign and size bits and the
+//  | |            delimiter bit, 2-complement because of the negative sign,
+//  | |            value is ~0x7ff, represents the value -0x800
+//  | |
+//  | size bits: 1 bit with the same value as the sign bit
+//  |            (followed by a delimiter bit with the opposite value)
+//  |            means that there is 1 byte after the first byte, 2 total
+//  |
+//  sign bit: 0 means that the number is negative
+//
+//
+// Compared with the simpler unsigned format used for uint64_t numbers,
+// this format is more compact for small numbers, namely one byte encodes
+// numbers in the range [-64,64), two bytes cover the range [-2^13,2^13), etc.
+// In general, n bytes encode numbers in the range [-2^(n*7-1),2^(n*7-1)).
+// (The cross-over point for compactness of representation is 8 bytes,
+// where this format only covers the range [-2^55,2^55),
+// whereas an encoding with sign bit and length in the first byte and
+// payload in all following bytes would cover [-2^56,2^56).)
+
+static const int kMaxSigned64Length = 10;
+
+// This array maps encoding length to header bits in the first two bytes.
+static const char kLengthToHeaderBits[1 + kMaxSigned64Length][2] = {
+    {0, 0},      {'\x80', 0},      {'\xc0', 0},     {'\xe0', 0},
+    {'\xf0', 0}, {'\xf8', 0},      {'\xfc', 0},     {'\xfe', 0},
+    {'\xff', 0}, {'\xff', '\x80'}, {'\xff', '\xc0'}};
+
+// This array maps encoding lengths to the header bits that overlap with
+// the payload and need fixing when reading.
+static const uint64_t kLengthToMask[1 + kMaxSigned64Length] = {
+    0ULL,
+    0x80ULL,
+    0xc000ULL,
+    0xe00000ULL,
+    0xf0000000ULL,
+    0xf800000000ULL,
+    0xfc0000000000ULL,
+    0xfe000000000000ULL,
+    0xff00000000000000ULL,
+    0x8000000000000000ULL,
+    0ULL};
+
+// This array maps the number of bits in a number to the encoding
+// length produced by WriteSignedNumIncreasing.
+// For positive numbers, the number of bits is 1 plus the most significant
+// bit position (the highest bit position in a positive int64_t is 63).
+// For a negative number n, we count the bits in ~n.
+// That is, length = kBitsToLength[Bits::Log2Floor64(n < 0 ? ~n : n) + 1].
+static const int8_t kBitsToLength[1 + 63] = {
+    1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4,
+    4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7,
+    7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10};
+
+/** Calculates the encoding length in bytes of the signed number n. */
+static inline int SignedEncodingLength(int64_t n) {
+  return kBitsToLength[Bits::Log2Floor64(
+                           static_cast<uint64_t>(n < 0 ? ~n : n)) +
+                       1];
+}
+
+/** Slightly faster version for n > 0. */
+static inline int SignedEncodingLengthPositive(int64_t n) {
+  return kBitsToLength[Bits::Log2FloorNonZero64(static_cast<uint64_t>(n)) + 1];
+}
+
+void OrderedCode::WriteSignedNumIncreasing(std::string* dest, int64_t val) {
+  const int64_t x = val < 0 ? ~val : val;
+  if (x < 64) {  // fast path for encoding length == 1
+    *dest += static_cast<char>(kLengthToHeaderBits[1][0] ^ val);
+    return;
+  }
+  // buf = val in network byte order, sign extended to 10 bytes
+  const char sign_byte = val < 0 ? '\xff' : '\0';
+  char buf[10] = {
+      sign_byte,
+      sign_byte,
+  };
+  UNALIGNED_STORE64(buf + 2, absl::ghtonll(static_cast<uint64_t>(val)));
+
+  HARD_ASSERT(sizeof(buf) == kMaxSigned64Length, "max length size mismatch");
+  const size_t len = static_cast<size_t>(SignedEncodingLengthPositive(x));
+  HARD_ASSERT(len >= 2);
+  char* const begin = buf + sizeof(buf) - len;
+  begin[0] ^= kLengthToHeaderBits[len][0];
+  begin[1] ^= kLengthToHeaderBits[len][1];  // ok because len >= 2
+  dest->append(begin, len);
+}
+
+bool OrderedCode::ReadSignedNumIncreasing(absl::string_view* src,
+                                          int64_t* result) {
+  if (src->empty()) return false;
+  const uint64_t xor_mask = (!((*src)[0] & 0x80)) ? ~0ULL : 0ULL;
+  const unsigned char first_byte = static_cast<unsigned char>(
+      static_cast<uint64_t>((*src)[0]) ^ (xor_mask & 0xff));
+
+  // now calculate and test length, and set x to raw (unmasked) result
+  size_t len;
+  uint64_t x;
+  if (first_byte != 0xff) {
+    len = static_cast<size_t>(7 - Bits::Log2FloorNonZero(first_byte ^ 0xff));
+    if (src->size() < len) return false;
+    x = xor_mask;  // sign extend using xor_mask
+    for (size_t i = 0; i < len; ++i)
+      x = (x << 8) | static_cast<unsigned char>((*src)[i]);
+  } else {
+    len = 8;
+    if (src->size() < len) return false;
+    const unsigned char second_byte = static_cast<unsigned char>(
+        static_cast<uint64_t>((*src)[1]) ^ (xor_mask & 0xff));
+    if (second_byte >= 0x80) {
+      if (second_byte < 0xc0) {
+        len = 9;
+      } else {
+        const unsigned char third_byte = static_cast<unsigned char>(
+            static_cast<uint64_t>((*src)[2]) ^ (xor_mask & 0xff));
+        if (second_byte == 0xc0 && third_byte < 0x80) {
+          len = 10;
+        } else {
+          return false;  // either len > 10 or len == 10 and #bits > 63
+        }
+      }
+      if (src->size() < len) return false;
+    }
+    x = absl::gntohll(UNALIGNED_LOAD64(src->data() + len - 8));
+  }
+
+  x ^= kLengthToMask[len];  // remove spurious header bits
+
+  HARD_ASSERT(len == static_cast<size_t>(
+                         SignedEncodingLength(static_cast<int64_t>(x))));
+
+  if (result) *result = static_cast<int64_t>(x);
+  src->remove_prefix(static_cast<size_t>(len));
+  return true;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.h
new file mode 100644
index 0000000..edadea8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/ordered_code.h	
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// This module provides routines for encoding a sequence of typed
+// entities into a string.  The resulting strings can be
+// lexicographically compared to yield the same comparison value that
+// would have been generated if the encoded items had been compared
+// one by one according to their type.
+//
+// More precisely, suppose:
+//  1. string A is generated by encoding the sequence of items [A_1..A_n]
+//  2. string B is generated by encoding the sequence of items [B_1..B_n]
+//  3. The types match; i.e., for all i: A_i was encoded using
+//     the same routine as B_i
+// Then:
+//    Comparing A vs. B lexicographically is the same as comparing
+//    the vectors [A_1..A_n] and [B_1..B_n] lexicographically.
+//
+// Furthermore, if n < m, the encoding of [A_1..A_n] is a strict prefix of
+// [A_1..A_m] (unless m = n+1 and A_m is the empty string encoded with
+// WriteTrailingString, in which case the encodings are equal).
+//
+// This module is often useful when generating multi-part sstable
+// keys that have to be ordered in a particular fashion.
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_ORDERED_CODE_H_
+#define FIRESTORE_CORE_SRC_UTIL_ORDERED_CODE_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class OrderedCode {
+ public:
+  // -------------------------------------------------------------------
+  // Encoding routines: each one of the following routines append
+  // one item to "*dest".  The Write(Signed)NumIncreasing() and
+  // Write(Signed)NumDecreasing() routines differ in whether the resulting
+  // encoding is ordered by increasing number or decreasing number.
+  // Similarly, WriteString() and WriteStringDecreasing() differ in whether
+  // the resulting encoding is ordered by the original string in
+  // lexicographically increasing or decreasing order.  WriteString()
+  // is not called WriteStringIncreasing() for convenience and backward
+  // compatibility.
+
+  static void WriteString(std::string* dest, absl::string_view str);
+  static void WriteNumIncreasing(std::string* dest, uint64_t val);
+  static void WriteSignedNumIncreasing(std::string* dest, int64_t val);
+
+  /**
+   * Creates an encoding for the "infinite string", a value considered to
+   * be lexicographically after any real string.  Note that in the case of
+   * WriteInfinityDecreasing(), this would come before any real string as
+   * the ordering puts lexicographically greater values first.
+   */
+  static void WriteInfinity(std::string* dest);
+
+  /**
+   * Special string append that can only be used at the tail end of
+   * an encoded string -- blindly appends "str" to "*dest".
+   */
+  static void WriteTrailingString(std::string* dest, absl::string_view str);
+
+  // -------------------------------------------------------------------
+  // Decoding routines: these extract an item earlier encoded using
+  // the corresponding WriteXXX() routines above.  The item is read
+  // from "*src"; "*src" is modified to point past the decoded item;
+  // and if "result" is non-NULL, "*result" is modified to contain the
+  // result.  In case of string result, the decoded string is appended to
+  // "*result".  Returns true if the next item was read successfully, false
+  // otherwise.
+
+  static bool ReadString(absl::string_view* src, std::string* result);
+  static bool ReadNumIncreasing(absl::string_view* src, uint64_t* result);
+  static bool ReadSignedNumIncreasing(absl::string_view* src, int64_t* result);
+
+  static bool ReadInfinity(absl::string_view* src);
+  static bool ReadTrailingString(absl::string_view* src, std::string* result);
+
+  /** REQUIRES: next item was encoded by WriteInfinity() or WriteString(). */
+  static bool ReadStringOrInfinity(absl::string_view* src,
+                                   std::string* result,
+                                   bool* inf);
+
+  /**
+   * Helper for testing: corrupt "*str" by changing the kth item separator
+   * in the string.
+   */
+  static void TEST_Corrupt(std::string* str, int k);
+
+  /**
+   * Helper for testing.
+   * SkipToNextSpecialByte is an internal routine defined in the .cc file
+   * with the following semantics. Return a pointer to the first byte
+   * in the range "[start..limit)" whose value is 0 or 255.  If no such
+   * byte exists in the range, returns "limit".
+   */
+  static const char* TEST_SkipToNextSpecialByte(const char* start,
+                                                const char* limit);
+
+  // Not an instantiable class, but the class exists to make it easy to
+  // use with a single using statement.
+  OrderedCode() = delete;
+  OrderedCode(const OrderedCode&) = delete;
+  OrderedCode& operator=(const OrderedCode&) = delete;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_ORDERED_CODE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.cc
new file mode 100644
index 0000000..6affbe1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.cc	
@@ -0,0 +1,249 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/path.h"
+
+#include <algorithm>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/string_win.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+#if defined(_WIN32)
+constexpr Path::char_type kPreferredSeparator = L'\\';
+#else
+constexpr Path::char_type kPreferredSeparator = '/';
+#endif
+
+/**
+ * Returns the offset within the given path that skips the leading drive letter.
+ * If there is no drive letter, returns zero.
+ */
+size_t OffsetAfterDriveLetter(const Path::char_type* path, size_t size) {
+#if defined(_WIN32)
+  if (size >= 2 && path[1] == L':') {
+    wchar_t drive_letter = path[0];
+    if (drive_letter <= 0xFF &&
+        absl::ascii_isalpha(static_cast<unsigned char>(drive_letter))) {
+      return 2;
+    }
+  }
+  return 0;
+
+#else
+  (void)path;
+  (void)size;
+  return 0;
+#endif  // defined(_WIN32)
+}
+
+/** Returns true if the given character is a pathname separator. */
+inline bool IsSeparator(Path::char_type c) {
+#if defined(_WIN32)
+  return c == L'/' || c == L'\\';
+#else
+  return c == '/';
+#endif  // defined(_WIN32)
+}
+
+bool IsAbsolute(const Path::char_type* path, size_t size) {
+  size_t offset = OffsetAfterDriveLetter(path, size);
+  return size >= offset && IsSeparator(path[offset]);
+}
+
+size_t LastNonSeparator(const Path::char_type* path, size_t size) {
+  if (size == 0) return Path::npos;
+
+  for (size_t i = size; i-- > 0;) {
+    if (!IsSeparator(path[i])) {
+      return i;
+    }
+  }
+  return Path::npos;
+}
+
+size_t LastSeparator(const Path::char_type* path, size_t size) {
+  if (size == 0) return Path::npos;
+
+  for (size_t i = size; i-- > 0;) {
+    if (IsSeparator(path[i])) {
+      return i;
+    }
+  }
+  return Path::npos;
+}
+
+#if defined(_WIN32)
+Path::string_type CanonicalPath(const Path::string_type& path) {
+  if (path.empty()) {
+    return path;
+  }
+
+  // Remove trailing separators, but take care not to remove the trailing slash
+  // in a root path name (which can have a drive letter).
+  std::wstring copy{path};
+  size_t rel_path_begin = OffsetAfterDriveLetter(copy.c_str(), copy.size());
+  if (rel_path_begin < copy.size() && IsSeparator(copy[rel_path_begin])) {
+    rel_path_begin += 1;
+  }
+
+  size_t non_slash = LastNonSeparator(copy.c_str(), copy.size());
+  if (non_slash != Path::npos) {
+    size_t last_slash = std::max(non_slash + 1, rel_path_begin);
+    copy.resize(last_slash);
+  }
+
+  // Convert separators to canonical separators.
+  std::replace(copy.begin(), copy.end(), L'/', kPreferredSeparator);
+
+  // Convert to lowercase. This relies on C++11 semantics of std::basic_string,
+  // namely that:
+  //   * s.c_str(), s.data(), and &s[0] are all aliases for each other;
+  //   * strings are always contiguous and null terminated; and
+  //   * Accessing s[s.size()] is valid and is the null terminator.
+  errno_t error = _wcslwr_s(&copy[0], copy.size() + 1);
+  HARD_ASSERT(error == 0);
+
+  return copy;
+}
+
+#else
+absl::string_view CanonicalPath(const Path::string_type& path) {
+  size_t non_slash = LastNonSeparator(path.c_str(), path.size());
+  if (non_slash == Path::npos) {
+    return path;
+  }
+
+  return absl::string_view{path.c_str(), non_slash + 1};
+}
+#endif  // defined(_WIN32)
+
+}  // namespace
+
+constexpr size_t Path::npos;
+
+Path Path::FromUtf8(absl::string_view utf8_pathname) {
+#if defined(_WIN32)
+  return Path{Utf8ToNative(utf8_pathname)};
+
+#else
+  return Path{std::string{utf8_pathname}};
+#endif  // defined(_WIN32)
+}
+
+#if defined(_WIN32)
+Path Path::FromUtf16(const wchar_t* path, size_t size) {
+  return Path{string_type{path, size}};
+}
+#endif
+
+#if defined(_WIN32)
+std::string Path::ToUtf8String() const {
+  return NativeToUtf8(pathname_);
+}
+#else
+const std::string& Path::ToUtf8String() const {
+  return pathname_;
+}
+#endif  // defined(_WIN32)
+
+Path Path::Basename() const {
+  size_t slash = LastSeparator(c_str(), size());
+  if (slash == npos) {
+    // No path separator found => the whole string.
+    return *this;
+  }
+
+  // Otherwise everything after the slash is the basename (even if empty string)
+  size_t start = slash + 1;
+  return Path{pathname_.substr(start)};
+}
+
+Path Path::Dirname() const {
+  size_t last_slash = LastSeparator(c_str(), size());
+  if (last_slash == npos) {
+    // No path separator found => empty string. Conformance with POSIX would
+    // have us return "." here.
+    return {};
+  }
+
+  // Collapse runs of slashes.
+  size_t non_slash = LastNonSeparator(c_str(), last_slash);
+  if (non_slash == npos) {
+    // All characters preceding the last path separator are slashes
+    return Path{pathname_.substr(0, 1)};
+  }
+
+  // Otherwise everything up to the slash is the parent directory
+  last_slash = non_slash + 1;
+  return Path{pathname_.substr(0, last_slash)};
+}
+
+bool Path::IsAbsolute() const {
+  return util::IsAbsolute(c_str(), size());
+}
+
+bool Path::HasExtension(const Path& ext) const {
+  return pathname_.size() >= ext.size() &&
+         pathname_.compare(pathname_.size() - ext.size(), ext.size(),
+                           ext.native_value()) == 0;
+}
+
+Path Path::AppendUtf8(absl::string_view path) const {
+  Path result{*this};
+  result.MutableAppendUtf8(path);
+  return result;
+}
+
+void Path::MutableAppendSegment(const char_type* path, size_t size) {
+  if (util::IsAbsolute(path, size)) {
+    pathname_.assign(path, size);
+
+  } else {
+    size_t non_slash = LastNonSeparator(pathname_.c_str(), pathname_.size());
+    if (non_slash != npos) {
+      pathname_.resize(non_slash + 1);
+      pathname_.push_back(kPreferredSeparator);
+    }
+
+    // If path started with a slash we'd treat it as absolute above
+    pathname_.append(path, size);
+  }
+}
+
+void Path::MutableAppendUtf8Segment(absl::string_view path) {
+#if defined(_WIN32)
+  Path segment = Path::FromUtf8(path);
+  MutableAppendSegment(segment.c_str(), segment.size());
+
+#else
+  MutableAppendSegment(path.data(), path.size());
+#endif
+}
+
+bool operator==(const Path& lhs, const Path& rhs) {
+  return CanonicalPath(lhs.pathname_) == CanonicalPath(rhs.pathname_);
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.h
new file mode 100644
index 0000000..27fe690
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/path.h	
@@ -0,0 +1,227 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_PATH_H_
+#define FIRESTORE_CORE_SRC_UTIL_PATH_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/string_apple.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * An immutable native pathname string. Paths can be absolute or relative. Paths
+ * internally maintain their filesystem-native encoding.
+ *
+ * The intent of the API is that high-level code generally just uses UTF-8-
+ * encoded string-literals or strings for the segments and constructs a
+ * filesystem-native Path using APIs like Path::JoinUtf8.
+ *
+ * Lower level code may need to construct derived Paths from values obtained
+ * from the filesystem that already are in the right encoding.
+ */
+class Path {
+ public:
+#if defined(_WIN32)
+  using char_type = wchar_t;
+#else
+  using char_type = char;
+#endif
+
+  using string_type = std::basic_string<char_type>;
+
+  static constexpr size_t npos = static_cast<size_t>(-1);
+
+  /**
+   * Creates a new Path from a UTF-8-encoded pathname.
+   */
+  static Path FromUtf8(absl::string_view utf8_pathname);
+
+#if defined(_WIN32)
+  /**
+   * Creates a new Path from a UTF-16-encoded pathname.
+   */
+  // absl::wstring_view does not exist :-(.
+  static Path FromUtf16(const wchar_t* begin, size_t size);
+#endif
+
+#if defined(__OBJC__)
+  /**
+   * Creates a new Path from the given NSString pathname.
+   */
+  static Path FromNSString(NSString* path) {
+    return FromUtf8(MakeString(path));
+  }
+#endif
+
+  Path() = default;
+
+  const string_type& native_value() const {
+    return pathname_;
+  }
+
+  const char_type* c_str() const {
+    return pathname_.c_str();
+  }
+
+  bool empty() const {
+    return pathname_.empty();
+  }
+
+  size_t size() const {
+    return pathname_.size();
+  }
+
+#if defined(_WIN32)
+  std::string ToUtf8String() const;
+#else
+  const std::string& ToUtf8String() const;
+#endif  // defined(_WIN32)
+
+#if defined(__OBJC__)
+  NSString* ToNSString() const {
+    return MakeNSString(native_value());
+  }
+#endif
+
+  /**
+   * Returns a new Path containing the unqualified trailing part of this path,
+   * e.g. "c" for "/a/b/c".
+   */
+  Path Basename() const;
+
+  /**
+   * Returns a new Path containing the parent directory of this path, e.g.
+   * "/a/b" for "/a/b/c".
+   *
+   * Note:
+   *   * Trailing slashes are treated as a separator between an empty path
+   *     segment and the dirname, so the Dirname of "/a/b/c/" is "/a/b/c".
+   *   * Runs of more than one slash are treated as a single separator, so
+   *     the Dirname of "/a/b//c" is "/a/b".
+   *   * Paths are not canonicalized, so the Dirname of "/a//b//c" is "/a//b".
+   */
+  Path Dirname() const;
+
+  /**
+   * Returns true if this Path is an absolute path.
+   */
+  bool IsAbsolute() const;
+
+  /**
+   * Returns true if this pathname's last component has the given file
+   * extension.
+   *
+   * @param ext The file extension (including leading dot).
+   */
+  bool HasExtension(const Path& ext) const;
+
+  /**
+   * Returns a new Path with the given UTF-8 encoded path segment appended,
+   * as if by calling `Append(Path::FromUtf8(path))`.
+   */
+  Path AppendUtf8(absl::string_view path) const;
+  Path AppendUtf8(const char* path, size_t size) const {
+    return AppendUtf8(absl::string_view{path, size});
+  }
+
+#if defined(_WIN32)
+  Path AppendUtf16(const wchar_t* path, size_t size) const {
+    Path result{*this};
+    result.MutableAppendSegment(path, size);
+    return result;
+  }
+#endif
+
+  /**
+   * Returns the paths separated by path separators.
+   *
+   * @param base If base is of type std::string&& the result is moved from this
+   *     value. Otherwise the first argument is copied.
+   * @param paths The rest of the path segments.
+   */
+  template <typename P1, typename... PA>
+  static Path JoinUtf8(P1&& base, const PA&... paths) {
+    Path result = Path::FromUtf8(base);
+    result.MutableAppendUtf8(paths...);
+    return result;
+  }
+
+  friend bool operator==(const Path& lhs, const Path& rhs);
+  friend bool operator!=(const Path& lhs, const Path& rhs) {
+    return !(lhs == rhs);
+  }
+
+ private:
+  explicit Path(string_type&& native_pathname)
+      : pathname_{std::move(native_pathname)} {
+  }
+
+  /**
+   * If `path` is relative, appends it to `*this`. If `path` is absolute,
+   * replaces `*this`.
+   */
+  template <typename... P>
+  void MutableAppend(const Path& path, const P&... rest) {
+    MutableAppendSegment(path.c_str(), path.size());
+    MutableAppend(rest...);
+  }
+  void MutableAppend() {
+    // Recursive base case; nothing to do.
+  }
+  void MutableAppendSegment(const char_type* path, size_t size);
+
+  /**
+   * If `path` is relative, appends it to `*this`. If `path` is absolute,
+   * replaces `*this`.
+   */
+  template <typename P1, typename... P>
+  void MutableAppendUtf8(const P1& path, const P&... rest) {
+    MutableAppendUtf8Segment(path);
+    MutableAppendUtf8(rest...);
+  }
+  void MutableAppendUtf8Segment(absl::string_view path);
+  void MutableAppendUtf8Segment(const Path& path) {
+    // Allow existing Paths to be passed to Path::JoinUtf8.
+    MutableAppendSegment(path.c_str(), path.size());
+  }
+  void MutableAppendUtf8() {
+    // Recursive base case; nothing to do.
+  }
+
+  /**
+   * Returns a copy of the given path.
+   *
+   * This non-public variant of FromUtf8 allows JoinUtf8 to take a Path as its
+   * first argument.
+   */
+  static Path FromUtf8(const Path& path) {
+    return path;
+  }
+
+  string_type pathname_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_PATH_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/random_access_queue.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/random_access_queue.h
new file mode 100644
index 0000000..4ce5766
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/random_access_queue.h	
@@ -0,0 +1,270 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_RANDOM_ACCESS_QUEUE_H_
+#define FIRESTORE_CORE_SRC_UTIL_RANDOM_ACCESS_QUEUE_H_
+
+#include <deque>
+#include <unordered_map>
+#include <vector>
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * A queue that provides efficient removal of arbitrary elements.
+ *
+ * Another way to think of this class is an `unordered_set` that preserves
+ * insertion order and provides efficient access to the "front" element and
+ * removal of arbitrary elements.
+ *
+ * This class is implemented by maintaining two data structures: a queue that
+ * keeps track of insertion order and a set that provides efficient lookup.
+ * As a result, this class consumes roughly twice as much memory as a plain old
+ * queue and each mutating operation is roughly twice as slow as a plain old
+ * queue since each mutation must be performed on two data structures. However,
+ * these costs come at the benefit of being able to test for queue membership in
+ * constant time and remove queue elements in amortized constant time.
+ *
+ * The template argument `T` is the type of the elements to store in the queue.
+ * The remaining variadic template arguments are passed as the template
+ * arguments to `unordered_map`, allowing custom hashing and comparison
+ * functions to be specified.
+ */
+template <typename T, typename... UnorderedMapArgs>
+class RandomAccessQueue {
+ public:
+  RandomAccessQueue() = default;
+
+  RandomAccessQueue(const RandomAccessQueue& other) {
+    PushBackAll(other);
+  }
+
+  RandomAccessQueue(RandomAccessQueue&& other) = default;
+
+  RandomAccessQueue& operator=(const RandomAccessQueue& other) {
+    queue_.clear();
+    queue_entries_by_element_.clear();
+    PushBackAll(other);
+    return *this;
+  }
+
+  RandomAccessQueue& operator=(RandomAccessQueue&& other) = default;
+
+  /**
+   * Adds an element to the back of this queue, if it is not already present.
+   *
+   * Returns `true` if the given element was *not* already present in this
+   * queue, and therefore was added to the back, or `false` if the given element
+   * *was* already present in this queue, and therefore no changes were made to
+   * this object.
+   *
+   * This method has average constant-time complexity.
+   */
+  bool push_back(const T& element) {
+    // Put the element into the map if it is not already present. The `nullptr`
+    // will be replaced by a pointer to the object added to the queue when it is
+    // added below.
+    auto map_emplace_result =
+        queue_entries_by_element_.emplace(element, nullptr);
+
+    // Return `false` and do nothing if the given element was already present.
+    if (!map_emplace_result.second) {
+      return false;
+    }
+
+    // Add the element to the queue and update the pointer in the map.
+    queue_.emplace_back(element);
+    map_emplace_result.first->second = &queue_.back();
+
+    // Return `true` to indicate that the element was added to the queue.
+    return true;
+  }
+
+  /**
+   * Returns the element at the front of the queue.
+   *
+   * The behavior of this method is undefined if the queue is empty.
+   *
+   * This method has constant-time complexity.
+   */
+  const T& front() const {
+    const QueueEntry& entry = queue_.front();
+    HARD_ASSERT(
+        !entry.removed(),
+        "The front element in the queue should not be marked as \"removed\"");
+    return entry.element();
+  }
+
+  /**
+   * Removes the element at the front of the queue.
+   *
+   * The behavior of this method is undefined if the queue is empty.
+   *
+   * This method has average constant-time complexity; however, it is O(n) in
+   * the worst case, where `n` is the number of previously-removed elements.
+   */
+  void pop_front() {
+    const T& front_element = queue_.front().element();
+    queue_entries_by_element_.erase(front_element);
+    queue_.pop_front();
+    PruneLeadingQueueEntries();
+  }
+
+  /**
+   * Removes the given element from the queue, if it is present.
+   *
+   * Returns `true` if the given element was found in the queue and removed, or
+   * `false` if the given element was *not* found in the queue and therefore no
+   * changes were made to this object.
+   *
+   * This method has average constant-time complexity; however, it is O(n) in
+   * the worst case, where the front element is removed and `n` is the number of
+   * previously-removed elements.
+   */
+  bool remove(const T& element) {
+    auto it = queue_entries_by_element_.find(element);
+    if (it == queue_entries_by_element_.end()) {
+      return false;
+    }
+    it->second->set_removed();
+    queue_entries_by_element_.erase(it);
+    PruneLeadingQueueEntries();
+    return true;
+  }
+
+  /**
+   * Returns whether or not this queue is empty.
+   *
+   * This method has constant-time complexity.
+   */
+  bool empty() const {
+    return queue_.empty();
+  }
+
+  /**
+   * Returns whether or not this queue contains the given element.
+   *
+   * This method has average constant-time complexity.
+   */
+  bool contains(const T& element) const {
+    return queue_entries_by_element_.find(element) !=
+           queue_entries_by_element_.end();
+  }
+
+  /**
+   * Returns the elements in the queue.
+   *
+   * The order of the elements in the returned `vector` is the insertion order
+   * of those elements in this queue.
+   */
+  std::vector<T> elements() const {
+    std::vector<T> elements;
+    for (const QueueEntry& entry : queue_) {
+      if (!entry.removed()) {
+        elements.push_back(entry.element());
+      }
+    }
+    return elements;
+  }
+
+ private:
+  class QueueEntry {
+   public:
+    explicit QueueEntry(const T& element) : element_(element) {
+    }
+    const T& element() const {
+      return element_;
+    }
+    bool removed() const {
+      return removed_;
+    }
+    void set_removed() {
+      removed_ = true;
+    }
+
+   private:
+    T element_;
+    bool removed_ = false;
+  };
+
+  /**
+   * Removes all "removed" queue entries from the front of the queue.
+   *
+   * This method is useful to maintain the invariant that the front of the queue
+   * *must* be an element whose `removed()` method returns `false`.
+   */
+  void PruneLeadingQueueEntries() {
+    while (!queue_.empty() && queue_.front().removed()) {
+      queue_entries_by_element_.erase(queue_.front().element());
+      queue_.pop_front();
+    }
+  }
+
+  /**
+   * Effectively calls `push_back()` on this object for each element in the
+   * given queue (but more efficiently than *actually* calling push_back() for
+   * each element).
+   */
+  void PushBackAll(const RandomAccessQueue& other) {
+    for (const QueueEntry& entry : other.queue_) {
+      if (!entry.removed()) {
+        queue_.emplace_back(entry.element());
+        queue_entries_by_element_.emplace(entry.element(), &queue_.back());
+      }
+    }
+  }
+
+  /**
+   * The queued elements.
+   *
+   * When an element is "removed" from a `RandomAccessQueue`, instead of
+   * actually removing it from this `deque`, which is an O(n) operation, the
+   * "removed" flag of the corresponding queue entry is set to `true`; when that
+   * entry eventually makes its way to the front of the queue, it will be
+   * discarded and ignored.
+   *
+   * The front entry of this `deque` *must* always be one whose `removed` flag
+   * is `false`. This allows the `front()` method to be implemented as a mere
+   * pass-through to the `front()` method of this object.
+   */
+  std::deque<QueueEntry> queue_;
+
+  /**
+   * Maps the elements to their queue entry in `queue_`.
+   *
+   * When an element is "removed" from a `RandomAccessQueue`, its entry in the
+   * queue is looked up in this `unordered_map` and its `set_removed()` method
+   * is called; then, the entry is removed from the `unordered_map`. This allows
+   * presence in this `RandomAccessQueue` to be implemented by testing for
+   * presence in this `unordered_map`.
+   *
+   * Note: Since `std::deque` preserves pointer stability, the values in this
+   * map are pointers directly into `queue_`; therefore, care must be taken to
+   * not use the values after they have been removed from `queue_`.
+   */
+  std::unordered_map<T, QueueEntry*, UnorderedMapArgs...>
+      queue_entries_by_element_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_RANDOM_ACCESS_QUEUE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/range.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/range.h
new file mode 100644
index 0000000..87db48a
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/range.h	
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_RANGE_H_
+#define FIRESTORE_CORE_SRC_UTIL_RANGE_H_
+
+#include <iterator>
+#include <utility>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Adapts a pair of iterators into a range suitable for use with range-based
+ * for loops.
+ */
+template <typename Iterator>
+class range {
+ public:
+  using value_type = typename std::iterator_traits<Iterator>::value_type;
+  using iterator = Iterator;
+  using const_iterator = Iterator;
+
+  /**
+   * Default range which constructs default begin and end pointers. For most
+   * implementations where the end pointer is a null pointer or some other
+   * default value, this ends up constructing the empty range.
+   */
+  range() : begin_{}, end_{} {
+  }
+
+  /**
+   * Creates a half-open range starting from begin up to, but not including end.
+   */
+  range(iterator&& begin, iterator&& end)
+      : begin_{std::move(begin)}, end_{std::move(end)} {
+  }
+
+  iterator begin() const {
+    return begin_;
+  }
+
+  iterator end() const {
+    return end_;
+  }
+
+ private:
+  Iterator begin_;
+  Iterator end_;
+};
+
+/**
+ * Creates ranges with type deduction.
+ */
+template <typename Iterator>
+range<Iterator> make_range(Iterator begin, Iterator end) {
+  return range<Iterator>{std::move(begin), std::move(end)};
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_RANGE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/read_context.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/read_context.h
new file mode 100644
index 0000000..6fa0059
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/read_context.h	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef FIRESTORE_CORE_SRC_UTIL_READ_CONTEXT_H_
+#define FIRESTORE_CORE_SRC_UTIL_READ_CONTEXT_H_
+
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Maintains whether any errors occurred between single reads within a larger
+ * read chain. The pattern is to pass the `ReadContext` as the first argument to
+ * any `Read` function that might fail, and for the function to exit early if
+ * the given context is failed already.
+ */
+class ReadContext {
+ public:
+  bool ok() const {
+    return status_.ok();
+  }
+
+  const util::Status& status() const {
+    return status_;
+  }
+
+  void set_status(util::Status status) {
+    status_ = std::move(status);
+  }
+
+  /**
+   * Ensures this `ReadContext`'s status is `!ok()`.
+   *
+   * If this `ReadContext`'s status is already `!ok()`, then this may augment
+   * the description, but will otherwise leave it alone. Otherwise, this
+   * `ReadContext`'s status will be set to `Error::kErrorDataLoss` with the
+   * specified description.
+   */
+  void Fail(std::string description) {
+    status_.Update(util::Status(Error::kErrorDataLoss, std::move(description)));
+  }
+
+  template <typename... FA>
+  void Fail(const char* format, const FA&... args) {
+    Fail(StringFormat(format, args...));
+  }
+
+ private:
+  util::Status status_ = util::Status::OK();
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_READ_CONTEXT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/sanitizers.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/sanitizers.h
new file mode 100644
index 0000000..215fafc
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/sanitizers.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_SANITIZERS_H_
+#define FIRESTORE_CORE_SRC_UTIL_SANITIZERS_H_
+
+// Clang feature detection compiler extension
+#if defined(__has_feature)
+#define HAS_FEATURE(FEATURE) __has_feature(FEATURE)
+#else
+#define HAS_FEATURE(FEATURE) 0
+#endif
+
+// Auto-detect the presence of sanitizers. Abseil does not do this yet, and
+// instead relies on users to pass e.g. -DADDRESS_SANITIZER on the command-line.
+
+// Clang and GCC 4.8
+#if !defined(ADDRESS_SANITIZER)
+#if HAS_FEATURE(address_sanitizer) || \
+    (defined(__GNUC__) && defined(__SANITIZE_ADDRESS__))
+#define ADDRESS_SANITIZER 1
+#endif
+#endif  // !defined(ADDRESS_SANITIZER)
+
+// Clang-only
+#if !defined(MEMORY_SANITIZER)
+#if HAS_FEATURE(memory_sanitizer)
+#define MEMORY_SANITIZER 1
+#endif
+#endif  // !defined(MEMORY_SANITIZER)
+
+// Clang and GCC 4.8+
+#if !defined(THREAD_SANITIZER)
+#if HAS_FEATURE(thread_sanitizer) || \
+    (defined(__GNUC__) && defined(__SANITIZE_THREAD__))
+#define THREAD_SANITIZER 1
+#endif
+#endif  // !defined(THREAD_SANITIZER)
+
+// There doesn't appear to be a __has_feature check for ubsan.
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_SANITIZERS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.cc
new file mode 100644
index 0000000..2a7a9bb
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.cc	
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/schedule.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/task.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+Schedule::~Schedule() {
+  Clear();
+}
+
+void Schedule::Clear() {
+  std::unique_lock<std::mutex> lock{mutex_};
+
+  for (Task* task : scheduled_) {
+    task->Release();
+  }
+
+  scheduled_.clear();
+}
+
+void Schedule::Push(Task* task) {
+  InsertPreservingOrder(task);
+}
+
+Task* Schedule::PopIfDue() {
+  std::lock_guard<std::mutex> lock{mutex_};
+
+  if (HasDueLocked()) {
+    return ExtractLocked(scheduled_.begin());
+  }
+  return nullptr;
+}
+
+Task* Schedule::PopBlocking() {
+  std::unique_lock<std::mutex> lock{mutex_};
+
+  while (true) {
+    cv_.wait(lock, [this] { return !scheduled_.empty(); });
+
+    // To minimize busy waiting, sleep until either the nearest entry in the
+    // future either changes, or else becomes due.
+
+    // Workaround for Visual Studio 2015: cast to a time point with resolution
+    // that's at least as fine-grained as the clock on which `wait_until` is
+    // parametrized.
+    const auto until = std::chrono::time_point_cast<Clock::duration>(
+        scheduled_.front()->target_time());
+    cv_.wait_until(lock, until, [this, until] {
+      return scheduled_.empty() || scheduled_.front()->target_time() != until;
+    });
+
+    // There are 3 possibilities why `wait_until` has returned:
+    // - `wait_until` has timed out, in which case the current time is at
+    //   least `until`, so there must be an overdue entry;
+    // - a new entry has been added which comes before `until`. It must be
+    //   either overdue (in which case `HasDueLocked` will break the cycle),
+    //   or else `until` must be reevaluated (on the next iteration of the
+    //   loop);
+    // - `until` entry has been removed (including the case where the queue
+    //   has become empty). This means `until` has to be reevaluated, similar
+    //   to #2.
+
+    if (HasDueLocked()) {
+      return ExtractLocked(scheduled_.begin());
+    }
+  }
+}
+
+bool Schedule::empty() const {
+  std::lock_guard<std::mutex> lock{mutex_};
+  return scheduled_.empty();
+}
+
+size_t Schedule::size() const {
+  std::lock_guard<std::mutex> lock{mutex_};
+  return scheduled_.size();
+}
+
+void Schedule::InsertPreservingOrder(Task* new_entry) {
+  std::lock_guard<std::mutex> lock{mutex_};
+
+  const auto insertion_point =
+      std::upper_bound(scheduled_.begin(), scheduled_.end(), new_entry,
+                       [](Task* lhs, Task* rhs) {
+                         return lhs->target_time() < rhs->target_time();
+                       });
+  scheduled_.insert(insertion_point, new_entry);
+
+  cv_.notify_one();
+}
+
+// This function expects the mutex to be already locked.
+bool Schedule::HasDueLocked() const {
+  namespace chr = std::chrono;
+  const auto now = chr::time_point_cast<Duration>(Clock::now());
+  return !scheduled_.empty() && now >= scheduled_.front()->target_time();
+}
+
+// This function expects the mutex to be already locked.
+Task* Schedule::ExtractLocked(const Iterator where) {
+  HARD_ASSERT(!scheduled_.empty(),
+              "Trying to pop an entry from an empty queue.");
+
+  Task* result = *where;
+  scheduled_.erase(where);
+  cv_.notify_one();
+
+  return result;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.h
new file mode 100644
index 0000000..2d9700b
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/schedule.h	
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_SCHEDULE_H_
+#define FIRESTORE_CORE_SRC_UTIL_SCHEDULE_H_
+
+#include <algorithm>
+#include <condition_variable>  // NOLINT(build/c++11)
+#include <deque>
+#include <mutex>  // NOLINT(build/c++11)
+#include <vector>
+
+#include "Firestore/core/src/util/executor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class Task;
+
+// A thread-safe class similar to a priority queue where the entries are
+// prioritized by the time for which they're scheduled. Entries scheduled for
+// the exact same time are prioritized in FIFO order.
+//
+// The main function of `Schedule` is `PopBlocking`, which sleeps until an entry
+// becomes available. It correctly handles entries being asynchronously added or
+// removed from the schedule.
+//
+// The details of time management are completely concealed within the class.
+// Once an entry is scheduled, there is no way to reschedule or even retrieve
+// the time.
+class Schedule {
+  // Internal invariants:
+  // - entries are always in sorted order, leftmost entry is always the most
+  //   due;
+  // - each operation modifying the queue notifies the condition variable `cv_`.
+ public:
+  using Duration = Executor::Milliseconds;
+  using Clock = Executor::Clock;
+  // Entries are scheduled using absolute time.
+  using TimePoint = Executor::TimePoint;
+
+  ~Schedule();
+
+  void Clear();
+
+  // Schedules a task for it's specified target time.
+  void Push(Task* task);
+
+  // If the queue contains at least one entry for which the scheduled time is
+  // due now (according to the system clock), removes the entry which is the
+  // most overdue from the queue and returns it. If no entry is due, returns
+  // `nullptr`.
+  Task* PopIfDue();
+
+  // Blocks until at least one entry is available for which the scheduled time
+  // is due now (according to the system clock), removes the entry which is the
+  // most overdue from the queue and returns it. The function will attempt to
+  // minimize both the waiting time and busy waiting.
+  Task* PopBlocking();
+
+  bool empty() const;
+
+  size_t size() const;
+
+  // Removes the first entry satisfying predicate from the queue and returns it.
+  // If no such entry exists, returns `nullptr`. The predicate is applied to
+  // entries in order according to their scheduled time.
+  //
+  // Note that this function doesn't take into account whether the removed entry
+  // is past its due time.
+  template <typename Pred>
+  Task* RemoveIf(const Pred pred) {
+    std::lock_guard<std::mutex> lock{mutex_};
+
+    for (auto iter = scheduled_.begin(), end = scheduled_.end(); iter != end;
+         ++iter) {
+      Task* task = *iter;
+      if (pred(*task)) {
+        return ExtractLocked(iter);
+      }
+    }
+    return nullptr;
+  }
+
+  // Checks whether the queue contains an entry satisfying the given predicate.
+  template <typename Pred>
+  bool Contains(const Pred pred) const {
+    std::lock_guard<std::mutex> lock{mutex_};
+    return std::any_of(scheduled_.begin(), scheduled_.end(),
+                       [&pred](Task* t) { return pred(*t); });
+  }
+
+ private:
+  // All removals are on the front, but most insertions are expected to be on
+  // the back.
+  using Container = std::deque<Task*>;
+  using Iterator = typename Container::iterator;
+
+  void InsertPreservingOrder(Task* new_entry);
+
+  // This function expects the mutex to be already locked.
+  bool HasDueLocked() const;
+
+  // This function expects the mutex to be already locked.
+  Task* ExtractLocked(const Iterator where);
+
+  mutable std::mutex mutex_;
+  std::condition_variable cv_;
+  Container scheduled_;
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_SCHEDULE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random.h
new file mode 100644
index 0000000..9bb4d00
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random.h	
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_SECURE_RANDOM_H_
+#define FIRESTORE_CORE_SRC_UTIL_SECURE_RANDOM_H_
+
+#include <cstdint>
+#include <limits>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// A "secure" pseudorandom number generator, suitable for generating
+// unguessable identifiers. This exists because
+//
+//   * std::mt19937 is blazing fast but its outputs can be guessed once enough
+//     previous outputs have been observed.
+//   * std::random_device isn't guaranteed to come from a secure PRNG or be
+//     fast.
+//
+// The implementation satisfies the C++11 UniformRandomBitGenerator concept and
+// delegates to an implementation that generates high quality random values
+// quickly with periodic reseeding.
+class SecureRandom {
+ public:
+  // C++11 UniformRandomBitGenerator interface
+  using result_type = uint32_t;
+
+  static constexpr result_type min() {
+    return std::numeric_limits<result_type>::min();
+  }
+
+  static constexpr result_type max() {
+    return std::numeric_limits<result_type>::max();
+  }
+
+  result_type operator()();
+
+  /** Returns a uniformly distributed pseudorandom integer in [0, n). */
+  inline result_type Uniform(result_type n) {
+    // Divides the range into buckets of size n plus leftovers.
+    const result_type rem = (max() - min()) % n + min() + 1;
+    result_type rnd;
+    // Generates random number until the number falls into a bucket.
+    do {
+      rnd = (*this)();
+    } while (rnd < rem);
+    return rnd % n;
+  }
+
+  inline bool OneIn(result_type n) {
+    return Uniform(n) == 0;
+  }
+};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_SECURE_RANDOM_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random_arc4random.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random_arc4random.cc
new file mode 100644
index 0000000..e8d2dc1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/secure_random_arc4random.cc	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/secure_random.h"
+
+#include "Firestore/core/src/util/config.h"
+
+#if HAVE_ARC4RANDOM
+
+#include <stdlib.h>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+SecureRandom::result_type SecureRandom::operator()() {
+  return arc4random();
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // HAVE_ARC4RANDOM
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.cc
new file mode 100644
index 0000000..6048706
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.cc	
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2015, 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/status.h"
+
+#include <ostream>
+#include <utility>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+Status::Status(Error code, std::string msg) {
+  HARD_ASSERT(code != Error::kErrorOk);
+  state_ = State::MakePtr(code, std::move(msg));
+}
+
+Status Status::FromCause(std::string message, const Status& cause) {
+  if (cause.ok()) {
+    return cause;
+  }
+
+  return Status(cause.code(), std::move(message)).CausedBy(cause);
+}
+
+void Status::Update(const Status& new_status) {
+  if (ok()) {
+    *this = new_status;
+  }
+}
+
+Status& Status::CausedBy(const Status& cause) {
+  if (cause.ok() || this == &cause || cause.IsMovedFrom()) {
+    return *this;
+  }
+
+  if (ok() || IsMovedFrom()) {
+    *this = cause;
+    return *this;
+  }
+
+  std::string new_message = error_message();
+  absl::StrAppend(&state_->msg, ": ", cause.error_message());
+
+  // If this Status has no accompanying PlatformError but the cause does, create
+  // a PlatformError for this Status ahead of time to preserve the causal chain
+  // that Status doesn't otherwise support.
+  if (state_->platform_error == nullptr &&
+      cause.state_->platform_error != nullptr) {
+    state_->platform_error =
+        cause.state_->platform_error->WrapWith(code(), error_message());
+  }
+
+  return *this;
+}
+
+Status& Status::WithPlatformError(std::unique_ptr<PlatformError> error) {
+  HARD_ASSERT(!ok(), "Platform errors should not be applied to Status::OK()");
+  if (IsMovedFrom()) {
+    std::string message = moved_from_message();
+    state_ = State::MakePtr(Error::kErrorInternal, std::move(message));
+  }
+  state_->platform_error = std::move(error);
+  return *this;
+}
+
+void Status::State::Deleter::operator()(const State* ptr) const {
+  if (ptr != State::MovedFromIndicator()) {
+    delete ptr;
+  }
+}
+
+void Status::SetMovedFrom() {
+  // Set pointer value to `0x1` as the pointer is no longer useful.
+  state_ = State::StatePtr{State::MovedFromIndicator()};
+}
+
+void Status::SlowCopyFrom(const State* src) {
+  if (src == nullptr) {
+    state_ = nullptr;
+  } else {
+    state_ = State::MakePtr(*src);
+  }
+}
+
+const std::string& Status::empty_string() {
+  static std::string* empty = new std::string;
+  return *empty;
+}
+
+const std::string& Status::moved_from_message() {
+  static std::string* message = new std::string("Status accessed after move.");
+  return *message;
+}
+
+std::string Status::ToString() const {
+  if (state_ == nullptr) {
+    return "OK";
+  } else {
+    std::string result;
+    switch (code()) {
+      case Error::kErrorCancelled:
+        result = "Cancelled";
+        break;
+      case Error::kErrorUnknown:
+        result = "Unknown";
+        break;
+      case Error::kErrorInvalidArgument:
+        result = "Invalid argument";
+        break;
+      case Error::kErrorDeadlineExceeded:
+        result = "Deadline exceeded";
+        break;
+      case Error::kErrorNotFound:
+        result = "Not found";
+        break;
+      case Error::kErrorAlreadyExists:
+        result = "Already exists";
+        break;
+      case Error::kErrorPermissionDenied:
+        result = "Permission denied";
+        break;
+      case Error::kErrorUnauthenticated:
+        result = "Unauthenticated";
+        break;
+      case Error::kErrorResourceExhausted:
+        result = "Resource exhausted";
+        break;
+      case Error::kErrorFailedPrecondition:
+        result = "Failed precondition";
+        break;
+      case Error::kErrorAborted:
+        result = "Aborted";
+        break;
+      case Error::kErrorOutOfRange:
+        result = "Out of range";
+        break;
+      case Error::kErrorUnimplemented:
+        result = "Unimplemented";
+        break;
+      case Error::kErrorInternal:
+        result = "Internal";
+        break;
+      case Error::kErrorUnavailable:
+        result = "Unavailable";
+        break;
+      case Error::kErrorDataLoss:
+        result = "Data loss";
+        break;
+      default:
+        result = StringFormat("Unknown code(%s)", code());
+        break;
+    }
+    result += ": ";
+    result += IsMovedFrom() ? moved_from_message() : state_->msg;
+    return result;
+  }
+}
+
+std::ostream& operator<<(std::ostream& out, const Status& status) {
+  out << status.ToString();
+  return out;
+}
+
+void Status::IgnoreError() const {
+  // no-op
+}
+
+std::string StatusCheckOpHelperOutOfLine(const Status& v, const char* msg) {
+  HARD_ASSERT(!v.ok());
+  std::string r("Non-OK-status: ");
+  r += msg;
+  r += " status: ";
+  r += v.ToString();
+  return r;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.h
new file mode 100644
index 0000000..c07a4ad
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status.h	
@@ -0,0 +1,250 @@
+/*
+ * Copyright 2015, 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STATUS_H_
+#define FIRESTORE_CORE_SRC_UTIL_STATUS_H_
+
+#if _WIN32
+#include <windows.h>
+#endif
+
+#include <functional>
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/status_fwd.h"
+#include "absl/base/attributes.h"
+#include "absl/strings/string_view.h"
+
+#if __OBJC__
+@class NSError;
+#endif
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class PlatformError;
+
+/// Denotes success or failure of a call.
+class ABSL_MUST_USE_RESULT Status {
+ public:
+  /// Create a success status.
+  Status() = default;
+
+  /// \brief Create a status with the specified error code and msg as a
+  /// human-readable string containing more detailed information.
+  Status(Error code, std::string msg);
+
+  /// Copy the specified status.
+  Status(const Status& s);
+  Status& operator=(const Status& s);
+
+  /// Move the specified status.
+  Status(Status&& s) noexcept;
+  Status& operator=(Status&& s) noexcept;
+
+  static Status OK() {
+    return Status();
+  }
+
+  /// Creates a status object from the given errno error code and message.
+  static Status FromErrno(int errno_code, absl::string_view msg);
+
+#if defined(_WIN32)
+  static Status FromLastError(DWORD error, absl::string_view message);
+#endif  // defined(_WIN32)
+
+#if defined(__OBJC__)
+  static Status FromNSError(NSError* error);
+
+  NSError* ToNSError() const;
+#endif  // defined(__OBJC__)
+
+  /// Creates a status object with the given cause's code, and a message
+  /// combining the given error message with the cause's error message.
+  static Status FromCause(std::string message, const Status& cause);
+
+  /// Returns true iff the status indicates success.
+  bool ok() const {
+    return state_ == nullptr;
+  }
+
+  Error code() const {
+    return ok() ? Error::kErrorOk
+                : (IsMovedFrom() ? Error::kErrorInternal : state_->code);
+  }
+
+  const std::string& error_message() const {
+    return ok() ? empty_string()
+                : (IsMovedFrom() ? moved_from_message() : state_->msg);
+  }
+
+  bool operator==(const Status& x) const;
+  bool operator!=(const Status& x) const;
+
+  /// \brief If `ok()`, stores `new_status` into `*this`.  If `!ok()`,
+  /// preserves the current status, but may augment with additional
+  /// information about `new_status`.
+  ///
+  /// Convenient way of keeping track of the first error encountered.
+  /// Instead of:
+  ///   `if (overall_status.ok()) overall_status = new_status`
+  /// Use:
+  ///   `overall_status.Update(new_status);`
+  void Update(const Status& new_status);
+
+  /// \brief Adds the message in the given cause to this Status.
+  ///
+  /// \return *this
+  Status& CausedBy(const Status& cause);
+
+  Status& WithPlatformError(std::unique_ptr<PlatformError> error);
+
+  /// \brief Return a string representation of this status suitable for
+  /// printing. Returns the string `"OK"` for success.
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& out, const Status& status);
+
+  // Ignores any errors. This method does nothing except potentially suppress
+  // complaints from any tools that are checking that errors are not dropped on
+  // the floor.
+  void IgnoreError() const;
+
+ private:
+  static const std::string& empty_string();
+  static const std::string& moved_from_message();
+
+  struct State {
+    State() = default;
+    State(const State& other);
+    State(Error code, std::string&& msg);
+
+    struct Deleter {
+      void operator()(const State* ptr) const;
+    };
+    // A `unique_ptr` with a custom deleter. If the pointer's value has been set
+    // to a special value (0x01) to indicate it is moved, invoking the custom
+    // deleter will be a no-op.
+    using StatePtr = std::unique_ptr<State, Deleter>;
+
+    static State* MovedFromIndicator() {
+      return reinterpret_cast<State*>(0x01);
+    }
+
+    template <typename... Args>
+    static StatePtr MakePtr(Args&&... args) {
+      return StatePtr(new State(std::forward<Args>(args)...));
+    }
+
+    Error code;
+    std::string msg;
+
+    // An additional platform-specific error representation that was used to
+    // generate this Status. The PlatformError does not meaningfully contribute
+    // to the identity of this Status: it exists to allow tunneling e.g.
+    // NSError* to Status and back to NSError* losslessly.
+    std::unique_ptr<PlatformError> platform_error;
+  };
+
+  // Asserts if `state_` is a valid pointer, should be used at all places where
+  // it is used as a pointer, instead of using `state_`.
+  bool IsMovedFrom() const {
+    return state_.get() == State::MovedFromIndicator();
+  }
+
+  // OK status has a `nullptr` `state_`. If this instance is moved, state_ has
+  // the value of `State::MovedFromIndicator()`. Otherwise `state_` points to
+  // a `State` structure containing the error code and message(s).
+  State::StatePtr state_;
+
+  // Tags this instance as `moved-from`.
+  void SetMovedFrom();
+
+  void SlowCopyFrom(const State* src);
+};
+
+class PlatformError {
+ public:
+  virtual ~PlatformError() = default;
+
+  virtual std::unique_ptr<PlatformError> Copy() = 0;
+
+  /**
+   * Creates a new PlatformError with the given code and message, whose cause is
+   * this PlatformError.
+   */
+  virtual std::unique_ptr<PlatformError> WrapWith(Error code,
+                                                  std::string message) = 0;
+};
+
+inline Status::Status(const Status& s)
+    : state_{s.state_ == nullptr ? State::StatePtr{}
+                                 : State::MakePtr(*s.state_)} {
+}
+
+inline Status::State::State(const State& other)
+    : code(other.code),
+      msg(other.msg),
+      platform_error((other.platform_error == nullptr)
+                         ? nullptr
+                         : other.platform_error->Copy()) {
+}
+
+inline Status::State::State(Error code, std::string&& msg)
+    : code(code), msg(std::move(msg)) {
+}
+
+inline Status& Status::operator=(const Status& s) {
+  // The following condition catches both aliasing (when this == &s),
+  // and the common case where both s and *this are ok.
+  if (state_ != s.state_) {
+    SlowCopyFrom(s.state_.get());
+  }
+  return *this;
+}
+
+inline Status::Status(Status&& s) noexcept : state_(std::move(s.state_)) {
+  s.SetMovedFrom();
+}
+
+inline Status& Status::operator=(Status&& s) noexcept {
+  // Moving into self is a no-op.
+  if (this != &s) {
+    state_ = std::move(s.state_);
+    s.SetMovedFrom();
+  }
+  return *this;
+}
+
+inline bool Status::operator==(const Status& x) const {
+  return (this->state_ == x.state_) || (ToString() == x.ToString());
+}
+
+inline bool Status::operator!=(const Status& x) const {
+  return !(*this == x);
+}
+
+typedef std::function<void(Status)> StatusCallback;
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STATUS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_apple.mm b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_apple.mm
new file mode 100644
index 0000000..2fb9ef6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_apple.mm	
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/status.h"
+
+#if defined(__APPLE__)
+
+#include "Firestore/core/src/util/error_apple.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "absl/memory/memory.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+class UnderlyingNSError : public PlatformError {
+ public:
+  explicit UnderlyingNSError(NSError* error) : error_(error) {
+  }
+
+  static std::unique_ptr<UnderlyingNSError> Create(NSError* error) {
+    return absl::make_unique<UnderlyingNSError>(error);
+  }
+
+  static NSError* Recover(
+      const std::unique_ptr<PlatformError>& platform_error) {
+    if (platform_error == nullptr) {
+      return nil;
+    }
+
+    return static_cast<UnderlyingNSError*>(platform_error.get())->error();
+  }
+
+  std::unique_ptr<PlatformError> Copy() override {
+    return absl::make_unique<UnderlyingNSError>(error_);
+  }
+
+  std::unique_ptr<PlatformError> WrapWith(Error code,
+                                          std::string message) override {
+    NSError* chain = MakeNSError(code, message, error_);
+    return Create(chain);
+  }
+
+  NSError* error() const {
+    return error_;
+  }
+
+ private:
+  NSError* error_;
+};
+
+namespace {
+
+/**
+ * Converts a Firestore-generated NSError to the equivalent status.
+ */
+Status FromFirestoreNSError(NSError* error) {
+  auto error_code = static_cast<int>(error.code);
+  HARD_ASSERT(error_code >= Error::kErrorCancelled &&
+                  error_code <= Error::kErrorUnauthenticated,
+              "Unknown error code");
+
+  auto original = UnderlyingNSError::Create(error);
+
+  return Status(static_cast<Error>(error_code),
+                MakeString(error.localizedDescription))
+      .WithPlatformError(std::move(original));
+}
+
+}  // namespace
+
+Status Status::FromNSError(NSError* error) {
+  if (!error) {
+    return Status::OK();
+  }
+
+  if ([error.domain isEqual:FIRFirestoreErrorDomain]) {
+    return FromFirestoreNSError(error);
+  }
+
+  auto original = UnderlyingNSError::Create(error);
+
+  while (error) {
+    if ([error.domain isEqualToString:NSPOSIXErrorDomain]) {
+      auto error_code = static_cast<int>(error.code);
+      auto description = MakeString(original->error().localizedDescription);
+      return FromErrno(error_code, description)
+          .WithPlatformError(std::move(original));
+    }
+
+    error = error.userInfo[NSUnderlyingErrorKey];
+  }
+
+  auto description = StringFormat("Unknown error: %s", original->error());
+  return Status{Error::kErrorUnknown, description}.WithPlatformError(
+      std::move(original));
+}
+
+NSError* Status::ToNSError() const {
+  if (ok()) return nil;
+  // Early exit because `state_` is moved.
+  if (IsMovedFrom()) return MakeNSError(code(), error_message());
+
+  NSError* error = UnderlyingNSError::Recover(state_->platform_error);
+  if (error) return error;
+
+  return MakeNSError(code(), error_message());
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(__APPLE__)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_errno.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_errno.cc
new file mode 100644
index 0000000..21f15aa
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_errno.cc	
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/status.h"
+
+#include <cerrno>
+
+#include "Firestore/core/src/util/strerror.h"
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/// Returns the Canonical error code for the given errno value.
+static Error CodeForErrno(int errno_code) {
+  switch (errno_code) {
+    case 0:
+      return Error::kErrorOk;
+
+      // Internal canonical mappings call these failed preconditions, but for
+      // our purposes these must indicate an internal error in file handling.
+    case EBADF:  // Invalid file descriptor
+#if defined(EBADFD)
+    case EBADFD:  // File descriptor in bad state
+#endif
+      return Error::kErrorInternal;
+
+    case EINVAL:        // Invalid argument
+    case ENAMETOOLONG:  // Filename too long
+    case E2BIG:         // Argument list too long
+    case EDESTADDRREQ:  // Destination address required
+    case EDOM:          // Mathematics argument out of domain of function
+    case EFAULT:        // Bad address
+    case EILSEQ:        // Illegal byte sequence
+    case ENOPROTOOPT:   // Protocol not available
+    case ENOSTR:        // Not a STREAM
+    case ENOTSOCK:      // Not a socket
+    case ENOTTY:        // Inappropriate I/O control operation
+    case EPROTOTYPE:    // Protocol wrong type for socket
+    case ESPIPE:        // Invalid seek
+      return Error::kErrorInvalidArgument;
+
+    case ETIMEDOUT:  // Connection timed out
+    case ETIME:      // Timer expired
+      return Error::kErrorDeadlineExceeded;
+
+    case ENODEV:  // No such device
+    case ENOENT:  // No such file or directory
+#if defined(ENOMEDIUM)
+    case ENOMEDIUM:  // No medium found
+#endif
+    case ENXIO:  // No such device or address
+    case ESRCH:  // No such process
+      return Error::kErrorNotFound;
+
+    case EEXIST:         // File exists
+    case EADDRNOTAVAIL:  // Address not available
+    case EALREADY:       // Connection already in progress
+#if defined(ENOTUNIQ)
+    case ENOTUNIQ:  // Name not unique on network
+#endif
+      return Error::kErrorAlreadyExists;
+
+    case EPERM:   // Operation not permitted
+    case EACCES:  // Permission denied
+#if defined(ENOKEY)
+    case ENOKEY:  // Required key not available
+#endif
+    case EROFS:  // Read only file system
+      return Error::kErrorPermissionDenied;
+
+    case ENOTEMPTY:   // Directory not empty
+    case EISDIR:      // Is a directory
+    case ENOTDIR:     // Not a directory
+    case EADDRINUSE:  // Address already in use
+    case EBUSY:       // Device or resource busy
+    case ECHILD:      // No child processes
+    case EISCONN:     // Socket is connected
+#if defined(EISNAM)
+    case EISNAM:  // Is a named type file
+#endif
+#if defined(ENOTBLK)
+    case ENOTBLK:  // Block device required
+#endif
+    case ENOTCONN:  // The socket is not connected
+    case EPIPE:     // Broken pipe
+#if defined(ESHUTDOWN)
+    case ESHUTDOWN:  // Cannot send after transport endpoint shutdown
+#endif
+    case ETXTBSY:  // Text file busy
+#if defined(EUNATCH)
+    case EUNATCH:  // Protocol driver not attached
+#endif
+      return Error::kErrorFailedPrecondition;
+
+    case ENOSPC:  // No space left on device
+#if defined(EDQUOT)
+    case EDQUOT:  // Disk quota exceeded
+#endif
+    case EMFILE:   // Too many open files
+    case EMLINK:   // Too many links
+    case ENFILE:   // Too many open files in system
+    case ENOBUFS:  // No buffer space available
+    case ENODATA:  // No message is available on the STREAM read queue
+    case ENOMEM:   // Not enough space
+    case ENOSR:    // No STREAM resources
+#if defined(EUSERS)
+    case EUSERS:  // Too many users
+#endif
+      return Error::kErrorResourceExhausted;
+
+#if defined(ECHRNG)
+    case ECHRNG:  // Channel number out of range
+#endif
+    case EFBIG:      // File too large
+    case EOVERFLOW:  // Value too large to be stored in data type
+    case ERANGE:     // Result too large
+      return Error::kErrorOutOfRange;
+
+#if defined(ENOPKG)
+    case ENOPKG:  // Package not installed
+#endif
+    case ENOSYS:        // Function not implemented
+    case ENOTSUP:       // Operation not supported
+    case EAFNOSUPPORT:  // Address family not supported
+#if defined(EPFNOSUPPORT)
+    case EPFNOSUPPORT:  // Protocol family not supported
+#endif
+    case EPROTONOSUPPORT:  // Protocol not supported
+#if defined(ESOCKTNOSUPPORT)
+    case ESOCKTNOSUPPORT:  // Socket type not supported
+#endif
+    case EXDEV:  // Improper link
+      return Error::kErrorUnimplemented;
+
+    case EAGAIN:  // Resource temporarily unavailable
+#if defined(ECOMM)
+    case ECOMM:  // Communication error on send
+#endif
+    case ECONNREFUSED:  // Connection refused
+    case ECONNABORTED:  // Connection aborted
+    case ECONNRESET:    // Connection reset
+    case EINTR:         // Interrupted function call
+#if defined(EHOSTDOWN)
+    case EHOSTDOWN:  // Host is down
+#endif
+    case EHOSTUNREACH:  // Host is unreachable
+    case ENETDOWN:      // Network is down
+    case ENETRESET:     // Connection aborted by network
+    case ENETUNREACH:   // Network unreachable
+    case ENOLCK:        // No locks available
+    case ENOLINK:       // Link has been severed
+#if defined(ENONET)
+    case ENONET:  // Machine is not on the network
+#endif
+      return Error::kErrorUnavailable;
+
+    case EDEADLK:  // Resource deadlock avoided
+#if defined(ESTALE)
+    case ESTALE:  // Stale file handle
+#endif
+      return Error::kErrorAborted;
+
+    case ECANCELED:  // Operation cancelled
+      return Error::kErrorCancelled;
+
+    default:
+      return Error::kErrorUnknown;
+  }
+}
+
+Status Status::FromErrno(int errno_code, absl::string_view msg) {
+  if (errno_code == 0) {
+    return Status::OK();
+  }
+
+  Error canonical_code = CodeForErrno(errno_code);
+  return Status{canonical_code,
+                util::StringFormat("%s (errno %s: %s)", msg, errno_code,
+                                   StrError(errno_code))};
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_fwd.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_fwd.h
new file mode 100644
index 0000000..3c9b38c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_fwd.h	
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STATUS_FWD_H_
+#define FIRESTORE_CORE_SRC_UTIL_STATUS_FWD_H_
+
+#include <functional>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// Forward declarations for Status classes.
+
+class Status;
+
+using StatusCallback = std::function<void(Status)>;
+
+template <typename T>
+class StatusOr;
+
+template <typename T>
+using StatusOrCallback = std::function<void(util::StatusOr<T>)>;
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STATUS_FWD_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_win.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_win.cc
new file mode 100644
index 0000000..175bbcf
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/status_win.cc	
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/status.h"
+
+#if defined(_WIN32)
+
+#include "Firestore/core/src/util/string_format.h"
+#include "Firestore/core/src/util/string_win.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Returns the Canonical error code for the given Windows API error code as
+ * obtained from GetLastError().
+ */
+static Error CodeForLastError(DWORD error) {
+  switch (error) {
+    case ERROR_SUCCESS:
+      return Error::kErrorOk;
+
+      // return Error::kErrorInternal;
+
+    case ERROR_INVALID_FUNCTION:
+    case ERROR_INVALID_HANDLE:
+    case ERROR_INVALID_NAME:
+      return Error::kErrorInvalidArgument;
+
+      // return Error::kErrorDeadlineExceeded;
+
+    case ERROR_FILE_NOT_FOUND:
+    case ERROR_PATH_NOT_FOUND:
+    case ERROR_INVALID_DRIVE:
+    case ERROR_BAD_NETPATH:
+    case ERROR_DEV_NOT_EXIST:
+      return Error::kErrorNotFound;
+
+    case ERROR_FILE_EXISTS:
+    case ERROR_ALREADY_EXISTS:
+      return Error::kErrorAlreadyExists;
+
+    case ERROR_ACCESS_DENIED:
+    case ERROR_INVALID_ACCESS:
+    case ERROR_SHARING_VIOLATION:
+    case ERROR_WRITE_PROTECT:
+    case ERROR_LOCK_VIOLATION:
+      return Error::kErrorPermissionDenied;
+
+      // return Error::kErrorFailedPrecondition;
+
+    case ERROR_TOO_MANY_OPEN_FILES:
+    case ERROR_NOT_ENOUGH_MEMORY:
+    case ERROR_OUTOFMEMORY:
+    case ERROR_NO_MORE_FILES:
+    case ERROR_DISK_FULL:
+    case ERROR_HANDLE_DISK_FULL:
+      return Error::kErrorResourceExhausted;
+
+      // return Error::kErrorOutOfRange;
+
+    case ERROR_CALL_NOT_IMPLEMENTED:
+      return Error::kErrorUnimplemented;
+
+    case ERROR_NOT_READY:
+      return Error::kErrorUnavailable;
+
+      // return Error::kErrorAborted;
+
+      // return Error::kErrorCancelled;
+
+    default:
+      return Error::kErrorUnknown;
+  }
+}
+
+Status Status::FromLastError(DWORD error, absl::string_view msg) {
+  if (error == ERROR_SUCCESS) {
+    return Status::OK();
+  }
+
+  Error canonical_code = CodeForLastError(error);
+  std::string error_text = LastErrorMessage(error);
+  return Status{canonical_code, util::StringFormat("%s (error %s: %s)", msg,
+                                                   error, error_text)};
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(_WIN32)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.cc
new file mode 100644
index 0000000..6b4f2da
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.cc	
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2017, 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/statusor.h"
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace internal_statusor {
+
+void Helper::HandleInvalidStatusCtorArg(Status* status) {
+  const char* kMessage =
+      "An OK status is not a valid constructor argument to StatusOr<T>";
+  HARD_FAIL("%s", kMessage);
+  // Fall back to Internal for non-debug builds
+  *status = Status(Error::kErrorInternal, kMessage);
+}
+
+void Helper::Crash(const Status& status) {
+  HARD_FAIL("Attempting to fetch value instead of handling error %s",
+            status.ToString());
+}
+
+}  // namespace internal_statusor
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.h
new file mode 100644
index 0000000..daf0627
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor.h	
@@ -0,0 +1,323 @@
+/*
+ * Copyright 2017, 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// StatusOr<T> is the union of a Status object and a T
+// object. StatusOr models the concept of an object that is either a
+// usable value, or an error Status explaining why such a value is
+// not present. To this end, StatusOr<T> does not allow its Status
+// value to be Status::OK. Furthermore, the value of a StatusOr<T*>
+// must not be null. This is enforced by a debug check in most cases,
+// but even when it is not, clients must not set the value to null.
+//
+// The primary use-case for StatusOr<T> is as the return value of a
+// function which may fail.
+//
+// Example client usage for a StatusOr<T>, where T is not a pointer:
+//
+//  StatusOr<float> result = DoBigCalculationThatCouldFail();
+//  if (result.ok()) {
+//    float answer = result.ValueOrDie();
+//    printf("Big calculation yielded: %f", answer);
+//  } else {
+//    LOG(ERROR) << result.status();
+//  }
+//
+// Example client usage for a StatusOr<T*>:
+//
+//  StatusOr<Foo*> result = FooFactory::MakeNewFoo(arg);
+//  if (result.ok()) {
+//    std::unique_ptr<Foo> foo(result.ValueOrDie());
+//    foo->DoSomethingCool();
+//  } else {
+//    LOG(ERROR) << result.status();
+//  }
+//
+// Example client usage for a StatusOr<std::unique_ptr<T>>:
+//
+//  StatusOr<std::unique_ptr<Foo>> result = FooFactory::MakeNewFoo(arg);
+//  if (result.ok()) {
+//    std::unique_ptr<Foo> foo = std::move(result.ValueOrDie());
+//    foo->DoSomethingCool();
+//  } else {
+//    LOG(ERROR) << result.status();
+//  }
+//
+// Example factory implementation returning StatusOr<T*>:
+//
+//  StatusOr<Foo*> FooFactory::MakeNewFoo(int arg) {
+//    if (arg <= 0) {
+//      return Status(Error::kErrorInvalidArgument,
+//                    "Arg must be positive");
+//    } else {
+//      return new Foo(arg);
+//    }
+//  }
+//
+// Note that the assignment operators require that destroying the currently
+// stored value cannot invalidate the argument; in other words, the argument
+// cannot be an alias for the current value, or anything owned by the current
+// value.
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STATUSOR_H_
+#define FIRESTORE_CORE_SRC_UTIL_STATUSOR_H_
+
+#include <utility>
+
+#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
+#include "Firestore/core/src/util/status.h"
+#include "Firestore/core/src/util/statusor_internals.h"
+#include "absl/base/attributes.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+template <typename T>
+class ABSL_MUST_USE_RESULT StatusOr
+    : private internal_statusor::StatusOrData<T>,
+      private internal_statusor::TraitsBase<
+          std::is_copy_constructible<T>::value,
+          std::is_move_constructible<T>::value> {
+  template <typename U>
+  friend class StatusOr;
+
+  typedef internal_statusor::StatusOrData<T> Base;
+
+ public:
+  typedef T element_type;
+
+  // Constructs a new StatusOr with FirebaseErrorCode::Unknown status.  This is
+  // marked 'explicit' to try to catch cases like 'return {};', where people
+  // think StatusOr<std::vector<int>> will be initialized with an empty vector,
+  // instead of a FirebaseErrorCode::Unknown status.
+  explicit StatusOr();  // NOLINT: allow explicit zero-parameter ctor
+
+  // StatusOr<T> will be copy constructible/assignable if T is copy
+  // constructible.
+  StatusOr(const StatusOr&) = default;
+  StatusOr& operator=(const StatusOr&) = default;
+
+  // StatusOr<T> will be move constructible/assignable if T is move
+  // constructible.
+  StatusOr(StatusOr&&) = default;
+  StatusOr& operator=(StatusOr&&) = default;
+
+  // Conversion copy/move constructor, T must be convertible from U.
+  // TODO(b/62186717): These should not participate in overload resolution if U
+  // is not convertible to T.
+  template <typename U>
+  StatusOr(const StatusOr<U>& other);
+  template <typename U>
+  StatusOr(StatusOr<U>&& other);
+
+  // Conversion copy/move assignment operator, T must be convertible from U.
+  template <typename U>
+  StatusOr& operator=(const StatusOr<U>& other);
+  template <typename U>
+  StatusOr& operator=(StatusOr<U>&& other);
+
+  // Constructs a new StatusOr with the given value. After calling this
+  // constructor, calls to ValueOrDie() will succeed, and calls to status() will
+  // return OK.
+  //
+  // NOTE: Not explicit - we want to use StatusOr<T> as a return type
+  // so it is convenient and sensible to be able to do 'return T()'
+  // when the return type is StatusOr<T>.
+  //
+  // REQUIRES: T is copy constructible.
+  StatusOr(const T& value);  // NOLINT: allow non-explicit 1-param ctor
+
+  // Constructs a new StatusOr with the given non-ok status. After calling
+  // this constructor, calls to ValueOrDie() will CHECK-fail.
+  //
+  // NOTE: Not explicit - we want to use StatusOr<T> as a return
+  // value, so it is convenient and sensible to be able to do 'return
+  // Status()' when the return type is StatusOr<T>.
+  //
+  // REQUIRES: !status.ok(). This requirement is DCHECKed.
+  // In optimized builds, passing Status::OK() here will have the effect
+  // of passing Error::kErrorInternal as a fallback.
+  StatusOr(const Status& status);  // NOLINT: allow non-explicit 1-param ctor
+  StatusOr& operator=(const Status& status);
+
+  // TODO(b/62186997): Add operator=(T) overloads.
+
+  // Similar to the `const T&` overload.
+  //
+  // REQUIRES: T is move constructible.
+  StatusOr(T&& value);  // NOLINT: allow non-explicit 1-param ctor
+
+  // RValue versions of the operations declared above.
+  StatusOr(Status&& status);  // NOLINT: allow non-explicit 1-param ctor
+  StatusOr& operator=(Status&& status);
+
+  // Returns this->status().ok()
+  bool ok() const {
+    return this->status_.ok();
+  }
+
+  // Returns a reference to our status. If this contains a T, then
+  // returns Status::OK().
+  const Status& status() const&;
+  Status status() &&;
+
+  // Returns a reference to our current value, or CHECK-fails if !this->ok().
+  //
+  // Note: for value types that are cheap to copy, prefer simple code:
+  //
+  //   T value = statusor.ValueOrDie();
+  //
+  // Otherwise, if the value type is expensive to copy, but can be left
+  // in the StatusOr, simply assign to a reference:
+  //
+  //   T& value = statusor.ValueOrDie();  // or `const T&`
+  //
+  // Otherwise, if the value type supports an efficient move, it can be
+  // used as follows:
+  //
+  //   T value = std::move(statusor).ValueOrDie();
+  //
+  // The std::move on statusor instead of on the whole expression enables
+  // warnings about possible uses of the statusor object after the move.
+  // C++ style guide waiver for ref-qualified overloads granted in cl/143176389
+  // See go/ref-qualifiers for more details on such overloads.
+  const T& ValueOrDie() const&;
+  T& ValueOrDie() &;
+  const T&& ValueOrDie() const&&;
+  T&& ValueOrDie() &&;
+
+  T ConsumeValueOrDie() {
+    return std::move(ValueOrDie());
+  }
+
+  // Ignores any errors. This method does nothing except potentially suppress
+  // complaints from any tools that are checking that errors are not dropped on
+  // the floor.
+  void IgnoreError() const;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation details for StatusOr<T>
+
+template <typename T>
+StatusOr<T>::StatusOr() : Base(Status(Error::kErrorUnknown, "")) {
+}
+
+template <typename T>
+StatusOr<T>::StatusOr(const T& value) : Base(value) {
+}
+
+template <typename T>
+StatusOr<T>::StatusOr(const Status& status) : Base(status) {
+}
+
+template <typename T>
+StatusOr<T>& StatusOr<T>::operator=(const Status& status) {
+  this->Assign(status);
+  return *this;
+}
+
+template <typename T>
+StatusOr<T>::StatusOr(T&& value) : Base(std::move(value)) {
+}
+
+template <typename T>
+StatusOr<T>::StatusOr(Status&& status) : Base(std::move(status)) {
+}
+
+template <typename T>
+StatusOr<T>& StatusOr<T>::operator=(Status&& status) {
+  this->Assign(std::move(status));
+  return *this;
+}
+
+template <typename T>
+template <typename U>
+inline StatusOr<T>::StatusOr(const StatusOr<U>& other)
+    : Base(static_cast<const typename StatusOr<U>::Base&>(other)) {
+}
+
+template <typename T>
+template <typename U>
+inline StatusOr<T>& StatusOr<T>::operator=(const StatusOr<U>& other) {
+  if (other.ok())
+    this->Assign(other.ValueOrDie());
+  else
+    this->Assign(other.status());
+  return *this;
+}
+
+template <typename T>
+template <typename U>
+inline StatusOr<T>::StatusOr(StatusOr<U>&& other)
+    : Base(static_cast<typename StatusOr<U>::Base&&>(other)) {
+}
+
+template <typename T>
+template <typename U>
+inline StatusOr<T>& StatusOr<T>::operator=(StatusOr<U>&& other) {
+  if (other.ok()) {
+    this->Assign(std::move(other).ValueOrDie());
+  } else {
+    this->Assign(std::move(other).status());
+  }
+  return *this;
+}
+
+template <typename T>
+const Status& StatusOr<T>::status() const& {
+  return this->status_;
+}
+template <typename T>
+Status StatusOr<T>::status() && {
+  return ok() ? Status::OK() : std::move(this->status_);
+}
+
+template <typename T>
+const T& StatusOr<T>::ValueOrDie() const& {
+  this->EnsureOk();
+  return this->data_;
+}
+
+template <typename T>
+T& StatusOr<T>::ValueOrDie() & {
+  this->EnsureOk();
+  return this->data_;
+}
+
+template <typename T>
+const T&& StatusOr<T>::ValueOrDie() const&& {
+  this->EnsureOk();
+  return std::move(this->data_);
+}
+
+template <typename T>
+T&& StatusOr<T>::ValueOrDie() && {
+  this->EnsureOk();
+  return std::move(this->data_);
+}
+
+template <typename T>
+void StatusOr<T>::IgnoreError() const {
+  // no-op
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STATUSOR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor_internals.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor_internals.h
new file mode 100644
index 0000000..e7c6fe6
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/statusor_internals.h	
@@ -0,0 +1,258 @@
+/*
+ * Copyright 2017, 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STATUSOR_INTERNALS_H_
+#define FIRESTORE_CORE_SRC_UTIL_STATUSOR_INTERNALS_H_
+
+#include <utility>
+
+#include "Firestore/core/src/util/status.h"
+#include "absl/base/attributes.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace internal_statusor {
+
+class Helper {
+ public:
+  // Move type-agnostic error handling to the .cc.
+  static void HandleInvalidStatusCtorArg(Status*);
+  ABSL_ATTRIBUTE_NORETURN static void Crash(const Status& status);
+};
+
+// Construct an instance of T in `p` through placement new, passing Args... to
+// the constructor.
+// This abstraction is here mostly for the gcc performance fix.
+template <typename T, typename... Args>
+void PlacementNew(void* p, Args&&... args) {
+#if defined(__GNUC__) && !defined(__clang__)
+  // Teach gcc that 'p' cannot be null, fixing code size issues.
+  if (p == nullptr) __builtin_unreachable();
+#endif
+  new (p) T(std::forward<Args>(args)...);
+}
+
+// Helper base class to hold the data and all operations.
+// We move all this to a base class to allow mixing with the appropriate
+// TraitsBase specialization.
+template <typename T>
+class StatusOrData {
+  template <typename U>
+  friend class StatusOrData;
+
+ public:
+  StatusOrData() = delete;
+
+  StatusOrData(const StatusOrData& other) {
+    if (other.ok()) {
+      MakeValue(other.data_);
+      MakeStatus();
+    } else {
+      MakeStatus(other.status_);
+    }
+  }
+
+  StatusOrData(StatusOrData&& other) noexcept {
+    if (other.ok()) {
+      MakeValue(std::move(other.data_));
+      MakeStatus();
+    } else {
+      MakeStatus(std::move(other.status_));
+    }
+  }
+
+  template <typename U>
+  StatusOrData(const StatusOrData<U>& other) {
+    if (other.ok()) {
+      MakeValue(other.data_);
+      MakeStatus();
+    } else {
+      MakeStatus(other.status_);
+    }
+  }
+
+  template <typename U>
+  StatusOrData(StatusOrData<U>&& other) {
+    if (other.ok()) {
+      MakeValue(std::move(other.data_));
+      MakeStatus();
+    } else {
+      MakeStatus(std::move(other.status_));
+    }
+  }
+
+  explicit StatusOrData(const T& value) : data_(value) {
+    MakeStatus();
+  }
+  explicit StatusOrData(T&& value) : data_(std::move(value)) {
+    MakeStatus();
+  }
+
+  explicit StatusOrData(const Status& status) : status_(status) {
+    EnsureNotOk();
+  }
+  explicit StatusOrData(Status&& status) : status_(std::move(status)) {
+    EnsureNotOk();
+  }
+
+  StatusOrData& operator=(const StatusOrData& other) {
+    if (this == &other) return *this;
+    if (other.ok())
+      Assign(other.data_);
+    else
+      Assign(other.status_);
+    return *this;
+  }
+
+  StatusOrData& operator=(StatusOrData&& other) noexcept {
+    if (this == &other) return *this;
+    if (other.ok())
+      Assign(std::move(other.data_));
+    else
+      Assign(std::move(other.status_));
+    return *this;
+  }
+
+  ~StatusOrData() {
+    if (ok()) {
+      status_.~Status();
+      data_.~T();
+    } else {
+      status_.~Status();
+    }
+  }
+
+  void Assign(const T& value) {
+    if (ok()) {
+      data_.~T();
+      MakeValue(value);
+    } else {
+      MakeValue(value);
+      status_ = Status::OK();
+    }
+  }
+
+  void Assign(T&& value) {
+    if (ok()) {
+      data_.~T();
+      MakeValue(std::move(value));
+    } else {
+      MakeValue(std::move(value));
+      status_ = Status::OK();
+    }
+  }
+
+  void Assign(const Status& status) {
+    Clear();
+    status_ = status;
+    EnsureNotOk();
+  }
+
+  void Assign(Status&& status) {
+    Clear();
+    status_ = std::move(status);
+    EnsureNotOk();
+  }
+
+  bool ok() const {
+    return status_.ok();
+  }
+
+ protected:
+  // status_ will always be active after the constructor.
+  // We make it a union to be able to initialize exactly how we need without
+  // waste.
+  // Eg. in the copy constructor we use the default constructor of Status in
+  // the ok() path to avoid an extra Ref call.
+  union {
+    Status status_;
+  };
+
+  // data_ is active iff status_.ok()==true
+  struct Dummy {};
+  union {
+    // When T is const, we need some non-const object we can cast to void* for
+    // the placement new. dummy_ is that object.
+    Dummy dummy_;
+    T data_;
+  };
+
+  void Clear() {
+    if (ok()) data_.~T();
+  }
+
+  void EnsureOk() const {
+    if (!ok()) Helper::Crash(status_);
+  }
+
+  void EnsureNotOk() {
+    if (ok()) Helper::HandleInvalidStatusCtorArg(&status_);
+  }
+
+  // Construct the value (ie. data_) through placement new with the passed
+  // argument.
+  template <typename Arg>
+  void MakeValue(Arg&& arg) {
+    internal_statusor::PlacementNew<T>(&dummy_, std::forward<Arg>(arg));
+  }
+
+  // Construct the status (ie. status_) through placement new with the passed
+  // argument.
+  template <typename... Args>
+  void MakeStatus(Args&&... args) {
+    internal_statusor::PlacementNew<Status>(&status_,
+                                            std::forward<Args>(args)...);
+  }
+};
+
+// Helper base class to allow implicitly deleted constructors and assignment
+// operations in StatusOr.
+// TraitsBase will explicitly delete what it can't support and StatusOr will
+// inherit that behavior implicitly.
+template <bool Copy, bool Move>
+struct TraitsBase {
+  TraitsBase() = default;
+  TraitsBase(const TraitsBase&) = default;
+  TraitsBase(TraitsBase&&) = default;
+  TraitsBase& operator=(const TraitsBase&) = default;
+  TraitsBase& operator=(TraitsBase&&) = default;
+};
+
+template <>
+struct TraitsBase<false, true> {
+  TraitsBase() = default;
+  TraitsBase(const TraitsBase&) = delete;
+  TraitsBase(TraitsBase&&) = default;
+  TraitsBase& operator=(const TraitsBase&) = delete;
+  TraitsBase& operator=(TraitsBase&&) = default;
+};
+
+template <>
+struct TraitsBase<false, false> {
+  TraitsBase() = default;
+  TraitsBase(const TraitsBase&) = delete;
+  TraitsBase(TraitsBase&&) = delete;
+  TraitsBase& operator=(const TraitsBase&) = delete;
+  TraitsBase& operator=(TraitsBase&&) = delete;
+};
+
+}  // namespace internal_statusor
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STATUSOR_INTERNALS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.cc
new file mode 100644
index 0000000..e17a490
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.cc	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Implementation note:
+//
+// This is ported from //base/strerror.cc, with several local modifications:
+//
+//   * Removed non-portable optimization around to use sys_errlist where
+//     available without warnings.
+//   * Added __attribute__((unused)) to compile with -Wno-unused-functions.
+//   * Conformed to style/lint rules.
+
+#include "Firestore/core/src/util/strerror.h"
+
+#include <cerrno>
+#include <cstring>
+
+#if defined(_WIN32)
+#define HAVE_STRERROR_S 1
+
+#elif defined(__GLIBC__)
+#if (_POSIX_C_SOURCE >= 200112L) && !_GNU_SOURCE
+#define HAVE_POSIX_STRERROR_R 1
+#else
+#define HAVE_GNU_STRERROR_R 1
+#endif
+
+#else
+#define HAVE_POSIX_STRERROR_R 1
+
+#endif
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace {
+
+inline const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) {
+#if HAVE_STRERROR_S
+  int rc = strerror_s(buf, buflen, errnum);
+  buf[buflen - 1] = '\0';  // guarantee NUL termination
+
+  if (rc == 0 && strcmp(buf, "Unknown error") == 0) {
+    *buf = '\0';
+  }
+  return buf;
+
+#elif HAVE_POSIX_STRERROR_R
+  if (strerror_r(errnum, buf, buflen)) {
+    *buf = '\0';
+  }
+  return buf;
+
+#elif HAVE_GNU_STRERROR_R
+  return strerror_r(errnum, buf, buflen);
+
+#endif  // HAVE_STRERROR_S
+}
+
+}  // namespace
+
+std::string StrError(int errnum) {
+  const int saved_errno = errno;
+
+  char buf[100];
+  const char* str = StrErrorAdaptor(errnum, buf, sizeof buf);
+  if (*str == '\0') {
+    snprintf(buf, sizeof buf, "Unknown error %d", errnum);
+    str = buf;
+  }
+
+  errno = saved_errno;
+  return str;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.h
new file mode 100644
index 0000000..2e832e1
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/strerror.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STRERROR_H_
+#define FIRESTORE_CORE_SRC_UTIL_STRERROR_H_
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// A portable and thread-safe alternative to strerror().
+// Returns a human-readable string describing the given POSIX error
+// code. If the error code is not translatable, the string will be
+// "Unknown error nnn". errno will not be modified by this call.
+std::string StrError(int errnum);
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STRERROR_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.cc
new file mode 100644
index 0000000..b55d9c4
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.cc	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/string_apple.h"
+
+#if defined(__APPLE__)
+
+#include <string>
+
+#include "Firestore/core/src/util/hard_assert.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+std::string MakeString(CFStringRef str) {
+  CFIndex num_chars = CFStringGetLength(str);
+  if (num_chars == 0) {
+    return {};
+  }
+
+  // In the first pass figure the size required. The size does not include the
+  // null terminator.
+  CFRange range{0, num_chars};
+  CFIndex num_bytes = 0;
+  CFIndex converted = CFStringGetBytes(str, range, kCFStringEncodingUTF8, 0u,
+                                       false, nullptr, 0, &num_bytes);
+  HARD_ASSERT(converted == num_chars);
+
+  std::string result(static_cast<size_t>(num_bytes), '\0');
+  auto buffer = reinterpret_cast<UInt8*>(&result[0]);
+  converted = CFStringGetBytes(str, range, kCFStringEncodingUTF8, 0u, false,
+                               buffer, num_bytes, nullptr);
+  HARD_ASSERT(converted == num_chars);
+
+  return result;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(__APPLE__)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.h
new file mode 100644
index 0000000..11b8a9e
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_apple.h	
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STRING_APPLE_H_
+#define FIRESTORE_CORE_SRC_UTIL_STRING_APPLE_H_
+
+#if defined(__APPLE__)
+#import <CoreFoundation/CoreFoundation.h>
+
+#if defined(__OBJC__)
+#import <Foundation/Foundation.h>
+#endif
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+CF_ASSUME_NONNULL_BEGIN
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Returns a copy of the given CFString (or NSString) encoded in UTF-8.
+ */
+std::string MakeString(CFStringRef str);
+
+inline CFStringRef MakeCFString(absl::string_view contents) {
+  auto bytes = reinterpret_cast<const UInt8*>(contents.data());
+  return CFStringCreateWithBytes(kCFAllocatorDefault, bytes, contents.size(),
+                                 kCFStringEncodingUTF8, false);
+}
+
+/**
+ * CFRelease that safely ignores null values.
+ */
+inline void SafeCFRelease(CFTypeRef cf) {
+  if (cf) {
+    CFRelease(cf);
+  }
+}
+
+#if defined(__OBJC__)
+
+// Translates a string_view string to the equivalent NSString by making a copy.
+inline NSString* MakeNSString(absl::string_view str) {
+  return [[NSString alloc]
+      initWithBytes:const_cast<void*>(static_cast<const void*>(str.data()))
+             length:str.length()
+           encoding:NSUTF8StringEncoding];
+}
+
+// Translates a nullable pointer to string to the equivalent NSString by making
+// a copy.
+inline NSString* _Nullable MakeNSString(
+    const std::shared_ptr<const std::string>& str) {
+  return str ? MakeNSString(*str) : nil;
+}
+
+// Creates an absl::string_view wrapper for the contents of the given
+// NSString.
+inline absl::string_view MakeStringView(NSString* str) {
+  return absl::string_view(
+      [str UTF8String], [str lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
+}
+
+// Creates a std::string wrapper for the contents of the given NSString.
+inline std::string MakeString(NSString* str) {
+  CFStringRef cf_str = (__bridge CFStringRef)str;
+  return MakeString(cf_str);
+}
+
+// Creates a nullable shared_ptr pointing to a string for the contents of the
+// given NSString, or nullptr if it's nil.
+inline std::shared_ptr<const std::string> MakeStringPtr(
+    NSString* _Nullable str) {
+  if (!str) return nullptr;
+  return std::make_shared<const std::string>(MakeString(str));
+}
+
+#endif  // defined(__OBJC__)
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+CF_ASSUME_NONNULL_END
+
+#endif  // defined(__APPLE__)
+#endif  // FIRESTORE_CORE_SRC_UTIL_STRING_APPLE_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.cc
new file mode 100644
index 0000000..8eced03
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.cc	
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/string_format.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+namespace internal {
+
+static const char* kMissing = "<missing>";
+static const char* kInvalid = "<invalid>";
+
+std::string StringFormatPieces(
+    const char* format, std::initializer_list<absl::string_view> pieces) {
+  std::string result;
+
+  const char* format_iter = format;
+  const char* format_end = format + strlen(format);
+
+  auto pieces_iter = pieces.begin();
+  auto pieces_end = pieces.end();
+  auto append_next_piece = [&](std::string* dest) {
+    if (pieces_iter == pieces_end) {
+      dest->append(kMissing);
+    } else {
+      // Pass a piece through
+      dest->append(pieces_iter->data(), pieces_iter->size());
+      ++pieces_iter;
+    }
+  };
+
+  auto append_specifier = [&](char spec) {
+    switch (spec) {
+      case '%':
+        // Pass through literal %.
+        result.push_back('%');
+        break;
+
+      case 's': {
+        append_next_piece(&result);
+        break;
+      }
+
+      default:
+        result.append(kInvalid);
+        break;
+    }
+  };
+
+  // Iterate through the format string, advancing `format_iter` as we go.
+  while (true) {
+    const char* percent_ptr = std::find(format_iter, format_end, '%');
+
+    // percent either points to the next format specifier or the end of the
+    // format string. Either is safe to append here:
+    result.append(format_iter, percent_ptr);
+    if (percent_ptr == format_end) {
+      // No further pieces to format
+      break;
+    }
+
+    // Examine the specifier:
+    const char* spec_ptr = percent_ptr + 1;
+    if (spec_ptr == format_end) {
+      // Incomplete specifier, treat as a literal "%" and be done.
+      append_specifier('%');
+      break;
+    }
+    append_specifier(*spec_ptr);
+
+    format_iter = spec_ptr + 1;
+  }
+
+  return result;
+}
+
+}  // namespace internal
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.h
new file mode 100644
index 0000000..e00857c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_format.h	
@@ -0,0 +1,172 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STRING_FORMAT_H_
+#define FIRESTORE_CORE_SRC_UTIL_STRING_FORMAT_H_
+
+#include <initializer_list>
+#include <string>
+#include <utility>
+
+#include "Firestore/core/src/objc/objc_type_traits.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "Firestore/core/src/util/type_traits.h"
+#include "absl/base/attributes.h"
+#include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+namespace internal {
+
+std::string StringFormatPieces(const char* format,
+                               std::initializer_list<absl::string_view> pieces);
+
+/**
+ * Explicit ranking for formatting choices. Only useful as an implementation
+ * detail of `FormatArg`.
+ */
+template <int I>
+struct FormatChoice : FormatChoice<I + 1> {};
+
+template <>
+struct FormatChoice<5> {};
+
+}  // namespace internal
+
+/**
+ * Acts as the main value parameter to StringFormat and related functions.
+ *
+ * Chooses a conversion to a text form in this order:
+ *   * If the value is exactly of `bool` type (without implicit conversions)
+ *     the text will be "true" or "false".
+ *   * If the value is of type `const char*`, the text will be the value
+ *     interpreted as a C string. To show the address of a single char or to
+ *     show the `const char*` as an address, cast to `void*`.
+ *   * If the value is any other pointer type, the text will be the hexadecimal
+ *     formatting of the value as an unsigned integer.
+ *   * Otherwise the value is interpreted as anything absl::AlphaNum accepts.
+ */
+class FormatArg : public absl::AlphaNum {
+ public:
+  template <typename T>
+  FormatArg(T&& value)  // NOLINT(runtime/explicit)
+      : FormatArg{std::forward<T>(value), internal::FormatChoice<0>{}} {
+  }
+
+ private:
+  /**
+   * Creates a FormatArg from a boolean value, representing the string
+   * "true" or "false".
+   *
+   * This overload only applies if the type of the argument is exactly `bool`.
+   * No implicit conversions to bool are accepted.
+   */
+  template <typename T,
+            typename = typename std::enable_if<std::is_same<bool, T>{}>::type>
+  FormatArg(T bool_value, internal::FormatChoice<0>)
+      : AlphaNum{bool_value ? "true" : "false"} {
+  }
+
+#if __OBJC__
+  /**
+   * Creates a FormatArg from any pointer to an object derived from NSObject.
+   */
+  template <
+      typename T,
+      typename = typename std::enable_if<objc::is_objc_pointer<T>{}>::type>
+  FormatArg(T object, internal::FormatChoice<1>)
+      : AlphaNum{MakeStringView([object description])} {
+  }
+
+  /**
+   * Creates a FormatArg from any Objective-C Class type. Objective-C Class
+   * types are a special struct that aren't of a type derived from NSObject.
+   */
+  FormatArg(Class object, internal::FormatChoice<1>)
+      : AlphaNum{MakeStringView(NSStringFromClass(object))} {
+  }
+#endif
+
+  /**
+   * Creates a FormatArg from a character string literal. This is
+   * handled specially to avoid ambiguity with generic pointers, which are
+   * handled differently.
+   */
+  FormatArg(std::nullptr_t, internal::FormatChoice<2>) : AlphaNum{"null"} {
+  }
+
+  /**
+   * Creates a FormatArg from a character string literal. This is
+   * handled specially to avoid ambiguity with generic pointers, which are
+   * handled differently.
+   */
+  FormatArg(const char* string_value, internal::FormatChoice<3>)
+      : AlphaNum{string_value == nullptr ? "null" : string_value} {
+  }
+
+  /**
+   * Creates a FormatArg from an arbitrary pointer, represented as a
+   * hexadecimal integer literal.
+   */
+  template <typename T>
+  FormatArg(T* pointer_value, internal::FormatChoice<4>)
+      : AlphaNum{absl::Hex{reinterpret_cast<uintptr_t>(pointer_value)}} {
+  }
+
+  /**
+   * As a final fallback, creates a FormatArg from any type of value that
+   * absl::AlphaNum accepts.
+   */
+  template <typename T>
+  FormatArg(T&& value, internal::FormatChoice<5>)
+      : AlphaNum{std::forward<T>(value)} {
+  }
+};
+
+/**
+ * Formats a string using a simplified printf-like formatting mechanism that
+ * does not rely on C varargs.
+ *
+ * The following format specifiers are recognized:
+ *   * "%%" - A literal "%"
+ *   * "%s" - The next parameter is copied through
+ *
+ * Note:
+ *   * If you pass fewer arguments than the format requires, StringFormat will
+ *     insert "<missing>".
+ *   * If you pass more arguments than the format requires, any excess arguments
+ *     are ignored.
+ *   * If you use an invalid format specifier, StringFormat will insert
+ *     <invalid>.
+ */
+template <typename... FA>
+std::string StringFormat(const char* format, const FA&... args) {
+  return internal::StringFormatPieces(
+      format, {static_cast<const FormatArg&>(args).Piece()...});
+}
+
+inline std::string StringFormat() {
+  return {};
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STRING_FORMAT_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.cc
new file mode 100644
index 0000000..4440d81
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.cc	
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/string_util.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+std::string PrefixSuccessor(absl::string_view prefix) {
+  // We can increment the last character in the string and be done
+  // unless that character is 255 (0xff), in which case we have to erase the
+  // last character and increment the previous character, unless that
+  // is 255, etc. If the string is empty or consists entirely of
+  // 255's, we just return the empty string.
+  std::string limit(prefix);
+  while (!limit.empty()) {
+    size_t index = limit.length() - 1;
+    if (limit[index] == '\xff') {  // char literal avoids signed/unsigned.
+      limit.erase(index);
+    } else {
+      limit[index]++;
+      break;
+    }
+  }
+  return limit;
+}
+
+std::string ImmediateSuccessor(absl::string_view s) {
+  // Return the input string, with an additional NUL byte appended.
+  std::string out;
+  out.reserve(s.size() + 1);
+  out.append(s.data(), s.size());
+  out.push_back('\0');
+  return out;
+}
+
+const std::string& EmptyString() {
+  static auto* empty = new std::string;
+  return *empty;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.h
new file mode 100644
index 0000000..9646570
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_util.h	
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Useful string functions and so forth.  This is a grab-bag file.
+//
+// These functions work fine for UTF-8 strings as long as you can
+// consider them to be just byte strings.  For example, due to the
+// design of UTF-8 you do not need to worry about accidental matches,
+// as long as all your inputs are valid UTF-8 (use \uHHHH, not \xHH or \oOOO).
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STRING_UTIL_H_
+#define FIRESTORE_CORE_SRC_UTIL_STRING_UTIL_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Returns the smallest lexicographically larger string of equal or smaller
+ * length. Returns an empty string if there is no such successor (if the input
+ * is empty or consists entirely of 0xff bytes).
+ * Useful for calculating the smallest lexicographically larger string
+ * that will not be prefixed by the input string.
+ *
+ * Examples:
+ * "a" -> "b", "aaa" -> "aab", "aa\xff" -> "ab", "\xff" -> "", "" -> ""
+ */
+std::string PrefixSuccessor(absl::string_view prefix);
+
+/**
+ * Returns the immediate lexicographically-following string. This is useful to
+ * turn an inclusive range into something that can be used with Bigtable's
+ * SetLimitRow():
+ *
+ *     // Inclusive range [min_element, max_element].
+ *     string min_element = ...;
+ *     string max_element = ...;
+ *
+ *     // Equivalent range [range_start, range_end).
+ *     string range_start = min_element;
+ *     string range_end = ImmediateSuccessor(max_element);
+ *
+ * WARNING: Returns the input string with a '\0' appended; if you call c_str()
+ * on the result, it will compare equal to s.
+ *
+ * WARNING: Transforms "" -> "\0"; this doesn't account for Bigtable's special
+ * treatment of "" as infinity.
+ */
+std::string ImmediateSuccessor(absl::string_view s);
+
+/**
+ * Returns an reference to a static empty string.
+ */
+const std::string& EmptyString();
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_STRING_UTIL_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.cc
new file mode 100644
index 0000000..d5d9b03
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.cc	
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/string_win.h"
+
+#if defined(_WIN32)
+#include <windows.h>
+
+#include "Firestore/core/src/util/hard_assert.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/match.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+std::wstring Utf8ToNative(absl::string_view input) {
+  int input_len = static_cast<int>(input.size());
+
+  // MultiByteToWideChar considers a zero length to be an error, so special case
+  // the empty string.
+  if (input_len == 0) {
+    return L"";
+  }
+
+  // The input string_view may contain embedded nulls and isn't necessarily null
+  // terminated so we must pass an explicit length to MultiByteToWideChar. This
+  // means the result is the number of wchar_t required to hold the result,
+  // excluding the null terminator.
+  int output_len =
+      ::MultiByteToWideChar(CP_UTF8, 0, input.data(), input_len, nullptr, 0);
+  if (output_len == 0) {
+    DWORD error = ::GetLastError();
+    HARD_FAIL("Utf8ToNative failed with code %s: %s", error,
+              LastErrorMessage(error));
+  }
+  HARD_ASSERT(output_len > 0);
+
+  int output_terminated_len = output_len + 1;
+  std::wstring output(output_terminated_len, L'\0');
+  int result = ::MultiByteToWideChar(CP_UTF8, 0, input.data(), input_len,
+                                     &output[0], output_len);
+  HARD_ASSERT(result > 0 && result < output_terminated_len &&
+              output[output_len] == '\0');
+
+  output.resize(result);
+  return output;
+}
+
+std::string NativeToUtf8(const std::wstring& input) {
+  return NativeToUtf8(input.c_str(), input.size());
+}
+
+std::string NativeToUtf8(const wchar_t* input, size_t input_size) {
+  int input_len = static_cast<int>(input_size);
+  if (input_len == 0) {
+    return "";
+  }
+
+  // The input buffer may contain embedded nulls and isn't necessarily null
+  // terminated so we must pass an explicit length to WideCharToMultiByte. This
+  // means the result is the number of char required to hold the result,
+  // excluding the null terminator.
+  int output_len = ::WideCharToMultiByte(CP_UTF8, 0, input, input_len, nullptr,
+                                         0, nullptr, nullptr);
+  if (output_len == 0) {
+    DWORD error = ::GetLastError();
+    HARD_FAIL("NativeToUtf8 failed with code %s: %s", error,
+              LastErrorMessage(error));
+  }
+  HARD_ASSERT(output_len > 0);
+
+  int output_terminated_len = output_len + 1;
+  std::string output(output_terminated_len, '\0');
+  int result = ::WideCharToMultiByte(CP_UTF8, 0, input, input_len, &output[0],
+                                     output_len, nullptr, nullptr);
+  HARD_ASSERT(result > 0 && result < output_terminated_len &&
+              output[output_len] == '\0');
+
+  output.resize(result);
+  return output;
+}
+
+std::string LastErrorMessage(DWORD last_error) {
+  // Preallocate a buffer sufficiently large to receive any message. Since we're
+  // not asking for inserts this is already way too big.
+  size_t size = 16 * 1024;
+  auto error_text = absl::make_unique<wchar_t[]>(size);
+
+  // output_len excludes the trailing null.
+  DWORD output_len = ::FormatMessageW(
+      FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr,
+      last_error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_text.get(),
+      static_cast<DWORD>(size), nullptr);
+  if (output_len == 0) {
+    DWORD format_error = ::GetLastError();
+    return util::StringFormat(
+        "error %s; unknown error %s while getting error text", last_error,
+        format_error);
+  }
+
+  std::string formatted = NativeToUtf8(error_text.get(), output_len);
+  if (absl::EndsWith(formatted, "\r\n")) {
+    formatted.resize(formatted.size() - 2);
+  }
+  return formatted;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(_WIN32)
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.h
new file mode 100644
index 0000000..fa697ab
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/string_win.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_STRING_WIN_H_
+#define FIRESTORE_CORE_SRC_UTIL_STRING_WIN_H_
+
+#if defined(_WIN32)
+#include <windows.h>
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Converts a UTF-8-encoded string to the equivalent wide character form,
+ * suitable for use with Windows path-related functions.
+ */
+std::wstring Utf8ToNative(absl::string_view input);
+
+/**
+ * Converts a UTF-16-encoded filename to the equivalent in UTF-8, suitable for
+ * use in log messages or other non-path-related functions.
+ */
+std::string NativeToUtf8(const std::wstring& input);
+std::string NativeToUtf8(const wchar_t* input, size_t length);
+
+/**
+ * Formats the given system error code from GetLastError() to a UTF-8 encoded
+ * string.
+ */
+std::string LastErrorMessage(DWORD last_error);
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // defined(_WIN32)
+#endif  // FIRESTORE_CORE_SRC_UTIL_STRING_WIN_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.cc b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.cc
new file mode 100644
index 0000000..66232d9
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.cc	
@@ -0,0 +1,222 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/util/task.h"
+
+#include <chrono>  // NOLINT(build/c++11)
+#include <cstdint>
+#include <utility>
+
+#include "Firestore/core/src/util/defer.h"
+#include "Firestore/core/src/util/hard_assert.h"
+#include "Firestore/core/src/util/log.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+Task* Task::Create(Executor* executor, Executor::Operation&& operation) {
+  return new Task(executor, Executor::TimePoint(), Executor::kNoTag, 0u,
+                  std::move(operation));
+}
+
+Task* Task::Create(Executor* executor,
+                   Executor::TimePoint target_time,
+                   Executor::Tag tag,
+                   Executor::Id id,
+                   Executor::Operation&& operation) {
+  return new Task(executor, target_time, tag, id, std::move(operation));
+}
+
+Task::Task(Executor* executor,
+           Executor::TimePoint target_time,
+           Executor::Tag tag,
+           Executor::Id id,
+           Executor::Operation&& operation)
+    : executor_(executor),
+      target_time_(target_time),
+      tag_(tag),
+      id_(id),
+      operation_(std::move(operation)) {
+  // Initialization is not atomic; assignment is.
+  ref_count_ = 1;
+
+  TASK_TRACE("Task::Task %s (%s)", this,
+             (tag_ == Executor::kNoTag ? "immediate" : "scheduled"));
+}
+
+Task::~Task() {
+  TASK_TRACE("Task::~Task %s", this);
+}
+
+void Task::Retain() {
+  TASK_TRACE("Task::Retain %s (ref_count=%s)", this,
+             ref_count_.load(std::memory_order_relaxed));
+  ref_count_.fetch_add(1, std::memory_order_relaxed);
+}
+
+void Task::Release() {
+  // TODO(wilhuff): assert the old ref count is >= 1
+  // This isn't safe in the current implementation because HARD_ASSERT can throw
+  // and `Release` is likely to be called in a destructor.
+  int old_count = ref_count_.fetch_sub(1, std::memory_order_acq_rel);
+  if (old_count == 1) {
+    TASK_TRACE("Task::Release %s (deleting)", this);
+    delete this;
+  } else {
+    HARD_ASSERT(
+        old_count > 1,
+        "Test::Release called on an already deleted task %s (old_count=%s)",
+        this, old_count);
+    TASK_TRACE("Task::Release %s (ref_count=%s)", this, old_count);
+  }
+}
+
+void Task::ExecuteAndRelease() {
+  {
+    std::unique_lock<std::mutex> lock(mutex_);
+    TASK_TRACE("Task::Execute %s", this);
+
+    if (state_ == State::kInitial) {
+      state_ = State::kRunning;
+      executing_thread_ = std::this_thread::get_id();
+
+      {
+        // Invoke the operation without holding mutex_ to avoid deadlocks where
+        // the current task can trigger its own cancellation.
+        lock.unlock();
+        Defer relock([&] { lock.lock(); });
+        operation_();
+
+        // Clear the operation while not holding the lock to avoid the
+        // possibility that the destructor of something in the closure might
+        // try to reference this task.
+        operation_ = {};
+
+        TASK_TRACE("Task::Execute %s (completing)", this);
+      }
+
+      state_ = State::kDone;
+
+      // The callback to the executor must be performed after the operation
+      // completes, otherwise the executor's destructor cannot reliably block
+      // until all currently running tasks have completed.
+      //
+      // Also, the callback should only be performed if the executor has not
+      // canceled the task. If `operation_` destroys the executor, notifying
+      // the executor after `operation_` returns would result in a use after
+      // free.
+      //
+      // Whether or not the task has been canceled has to be evaluated within
+      // the lock to avoid a data race with `Cancel`.
+      if (executor_) {
+        executor_->OnCompletion(this);
+      }
+    }
+
+    is_complete_.notify_all();
+  }
+
+  Release();
+}
+
+void Task::Await() {
+  std::unique_lock<std::mutex> lock(mutex_);
+  AwaitLocked(lock);
+}
+
+bool Task::AwaitIfRunning() {
+  std::unique_lock<std::mutex> lock(mutex_);
+  if (state_ == State::kInitial) {
+    return false;
+  }
+
+  if (state_ == State::kRunning) {
+    auto this_thread = std::this_thread::get_id();
+    // The return value indicates whether or not the task has completed, but
+    // if the task itself attempts to await its completion it would deadlock.
+    // Instead define a task running on the current thread as no longer being
+    // scheduled.
+    if (this_thread != executing_thread_) {
+      AwaitLocked(lock);
+    }
+  }
+  return true;
+}
+
+void Task::AwaitLocked(std::unique_lock<std::mutex>& lock) {
+  TASK_TRACE("Task::Await %s", this);
+  is_complete_.wait(lock, [this] {
+    return state_ == State::kCancelled || state_ == State::kDone;
+  });
+}
+
+void Task::Cancel() {
+  std::unique_lock<std::mutex> lock(mutex_);
+  TASK_TRACE("Task::Cancel %s", this);
+
+  if (state_ == State::kInitial) {
+    // Do not clear the `operation_` here because that might indirectly trigger
+    // an interaction with this task through its destructor.
+    state_ = State::kCancelled;
+    executor_ = nullptr;
+
+    // Clear the operation while not holding the lock to avoid the
+    // possibility that the destructor of something in the closure might
+    // try to reference this task.
+    lock.unlock();
+    operation_ = {};
+
+    is_complete_.notify_all();
+
+  } else if (state_ == State::kRunning) {
+    // Cancelled tasks cannot notify the executor because the Executor's
+    // destructor may be running as a task. Once that task completes, a
+    // notification would be a use-after-free.
+    executor_ = nullptr;
+
+    // Avoid deadlocking if the current Task is triggering its own cancellation.
+    auto this_thread = std::this_thread::get_id();
+    if (this_thread != executing_thread_) {
+      AwaitLocked(lock);
+    }
+
+  } else {
+    // no-op; already kCancelled or kDone.
+  }
+}
+
+bool Task::operator<(const Task& rhs) const {
+  // target_time_ and id_ are immutable after assignment; no lock required.
+  if (target_time_ < rhs.target_time_) {
+    return true;
+  }
+  if (target_time_ > rhs.target_time_) {
+    return false;
+  }
+
+  return id_ < rhs.id_;
+}
+
+Executor::TimePoint MakeTargetTime(Executor::Milliseconds delay) {
+  return std::chrono::time_point_cast<Executor::Milliseconds>(
+             Executor::Clock::now()) +
+         delay;
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.h
new file mode 100644
index 0000000..ef86f29
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/task.h	
@@ -0,0 +1,229 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_TASK_H_
+#define FIRESTORE_CORE_SRC_UTIL_TASK_H_
+
+#include <atomic>
+#include <condition_variable>  // NOLINT(build/c++11)
+#include <memory>
+#include <mutex>   // NOLINT(build/c++11)
+#include <thread>  // NOLINT(build/c++11)
+
+#include "Firestore/core/src/util/executor.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * A task for an Executor to execute, either synchronously or asynchronously,
+ * either immediately or after some delay.
+ *
+ * Tasks are referenced counted, always live on the heap, must be allocated with
+ * `Task::Create`, and `delete` themselves when their reference count goes to
+ * zero. Use `Retain` and `Release` to manipulate the internal reference count.
+ *
+ * Nominally Tasks are owned by an Executor, but Tasks are intended to be able
+ * to outlive their owner in some special cases:
+ *
+ *   * If the Executor implementation delegates to a system scheduling facility
+ *     that does not support cancellation, the Executor can `Cancel` the task
+ *     and release its ownership. When the system gets around to executing the
+ *     Task, it will be a no-op.
+ *   * If the Executor is being destroyed from a Task owned by the Executor, the
+ *     Task naturally has to outlive the Executor.
+ */
+class Task {
+ public:
+  /**
+   * Constructs a new Task for immediate execution.
+   */
+  static Task* Create(Executor* executor, Executor::Operation&& operation);
+
+  /**
+   * Constructs a new Task for delayed execution.
+   */
+  static Task* Create(Executor* executor,
+                      Executor::TimePoint target_time,
+                      Executor::Tag tag,
+                      Executor::Id id,
+                      Executor::Operation&& operation);
+
+  // Tasks cannot be copied or moved.
+  Task(const Task& other) = delete;
+  Task& operator=(const Task& other) = delete;
+
+  /**
+   * Executes the operation if the Task has not already been executed or
+   * cancelled. Regardless of whether or not the operation runs, releases the
+   * task's ownership of itself.
+   */
+  void ExecuteAndRelease();
+
+  /**
+   * Increases the task's reference count.
+   */
+  void Retain();
+
+  /**
+   * Decreases the task's reference count, and when that reaches zero, `Release`
+   * will delete the task.
+   */
+  void Release();
+
+  /**
+   * Waits until the task has completed execution or cancellation.
+   */
+  void Await();
+
+  /**
+   * Waits until the task has completed execution or cancellation, but only if
+   * the task is currently running.
+   *
+   * @return true if the task is completed, false if it is still unscheduled.
+   */
+  bool AwaitIfRunning();
+
+  /**
+   * Cancels the task. Tasks that have not yet started running will be prevented
+   * from running.
+   *
+   * If the task is currently executing while it is invoked, `Cancel` will await
+   * the completion of the Task. This makes `Cancel` safe to call in the
+   * destructor of an Executor: any currently executing tasks will effectively
+   * extend the lifetime of the Executor.
+   *
+   * However, if the current task is triggering its own cancellation, `Cancel`
+   * will *not* wait because this would cause a deadlock. This makes it possible
+   * for a Task to destroy the Executor that owns it and is compatible with
+   * expectations that Task might have: after destroying the Executor it
+   * obviously cannot be referenced again.
+   *
+   * Task guarantees that by the time `Cancel` has returned, the task will make
+   * no callbacks to the owning executor. This ensures that Tasks that survive
+   * past the end of the executor's life do not use after free.
+   *
+   * Taken together, these properties make it such that the Executor can
+   * `Cancel` all pending tasks in its destructor and the right thing will
+   * happen:
+   *
+   *   * Tasks that haven't started yet won't run.
+   *   * Tasks that are currently running will extend the lifetime of the
+   *     Executor.
+   *   * Tasks that are destroying the Executor won't deadlock.
+   */
+  void Cancel();
+
+  /**
+   * Returns true if the Task is suitable for immediate execution (that is, it
+   * was created without a target time).
+   */
+  bool is_immediate() const {
+    // tag_ is immutable; no locking required
+    return tag_ == Executor::kNoTag;
+  }
+
+  /**
+   * Returns the target time for execution of the Task. If the task is immediate
+   * this will be a zero value in the past.
+   */
+  Executor::TimePoint target_time() const {
+    // target_time_ is immutable; no locking required.
+    return target_time_;
+  }
+
+  /**
+   * Returns the tag supplied in the constructor or `Executor::kNoTag`.
+   */
+  Executor::Tag tag() const {
+    // tag_ is immutable; no locking required.
+    return tag_;
+  }
+
+  Executor::Id id() const {
+    // id_ is immutable; no locking required.
+    return id_;
+  }
+
+  /**
+   * Orders tasks by target time, then by the order in which entries were
+   * created.
+   */
+  bool operator<(const Task& rhs) const;
+
+ private:
+  enum class State {
+    kInitial,    // Waiting to run (or be cancelled)
+    kCancelled,  // Has not run and has been cancelled
+    kRunning,    // Now running and can no longer be cancelled
+    kDone,       // Has run and has finished running; cannot be cancelled
+  };
+
+  Task(Executor* executor,
+       Executor::TimePoint target_time,
+       Executor::Tag tag,
+       Executor::Id id,
+       Executor::Operation&& operation);
+
+  // Tasks must always be allocated on the heap and they delete themselves when
+  // their reference count goes to zero.
+  //
+  // Virtual for testing.
+  virtual ~Task();
+
+  // Subclasses allowed for testing.
+  friend class TrackingTask;
+
+  void AwaitLocked(std::unique_lock<std::mutex>& lock);
+
+  std::mutex mutex_;
+  std::condition_variable is_complete_;
+  State state_ = State::kInitial;
+
+  std::atomic<int> ref_count_;
+
+  Executor* executor_ = nullptr;
+  Executor::TimePoint target_time_;
+  Executor::Tag tag_ = 0;
+  Executor::Id id_ = 0;
+
+  std::thread::id executing_thread_;
+
+  // The operation to run, supplied by the caller. Make this the last member
+  // just in case it refers to this task during its own destruction.
+  Executor::Operation operation_;
+};
+
+/**
+ * Converts a delay into an absolute `TimePoint` representing the current time
+ * plus the delay.
+ */
+Executor::TimePoint MakeTargetTime(Executor::Milliseconds delay);
+
+// Trace details of task execution. Unfortunately, this is all too useful when
+// diagnosing crashes in tests. Callers must include util/log.h for themselves.
+#if FIRESTORE_TRACE_TASKS
+#define TASK_TRACE(...) LOG_WARN(__VA_ARGS__)
+#else
+#define TASK_TRACE(...)
+#endif
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_TASK_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/to_string.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/to_string.h
new file mode 100644
index 0000000..9ec456d
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/to_string.h	
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_TO_STRING_H_
+#define FIRESTORE_CORE_SRC_UTIL_TO_STRING_H_
+
+#include <algorithm>
+#include <numeric>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "Firestore/core/src/objc/objc_type_traits.h"
+#include "Firestore/core/src/util/string_apple.h"
+#include "Firestore/core/src/util/string_format.h"
+#include "Firestore/core/src/util/type_traits.h"
+#include "absl/meta/type_traits.h"
+#include "absl/strings/str_join.h"
+#include "absl/types/optional.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+/**
+ * Creates a human-readable description of the given `value`. The representation
+ * is loosely inspired by Python.
+ *
+ * The general idea is to create the description by using the most specific
+ * available function that creates a string representation of the class; for
+ * containers, do this recursively, adding some minimal container formatting to
+ * the output.
+ *
+ * Example:
+ *
+ * std::vector<DocumentKey> v{
+ *     DocumentKey({"foo/bar"}),
+ *     DocumentKey({"this/that"})
+ * };
+ * assert(ToString(v) == "[foo/bar, this/that]");
+ *
+ * std::map<int, std::string> m{
+       {1, "foo"},
+       {2, "bar"}
+ * };
+ * assert(ToString(m) == "{1: foo, 2: bar}");
+ *
+ * The following algorithm is used:
+ *
+ *  - if `value` defines a member function called `ToString`, the description is
+ *    created by invoking the function;
+ *
+ *  - (in Objective-C++ only) otherwise, if `value` is an Objective-C object,
+ *    the description is created by calling `[value description]`and converting
+ *    the result to an `std::string`;
+ *
+ *  - otherwise, if `value` is an `std::string`, it's used as is;
+ *
+ * - otherwise, if `value` is an associative container (`std::map`,
+ *   `std::unordered_map`, `f:f:immutable::SortedMap`, etc.), the description is
+ *   of the form:
+ *
+ *     {key1: value1, key2: value2}
+ *
+ *    where the description of each key and value is created by running
+ *    `ToString` recursively;
+ *
+ *  - otherwise, if `value` is a container, the description is of the form:
+ *
+ *      [element1, element2]
+ *
+ *    where the description of each element is created by running `ToString`
+ *    recursively;
+ *
+ * - otherwise, `std::to_string` is used as a fallback. If `std::to_string` is
+ *   not defined for the class, a compilation error will be produced.
+ *
+ * Implementation notes: to rank different choices and avoid clashes (e.g.,
+ * a type that is an associative container is also a (simple) container), tag
+ * dispatch is used. Each function in the chain either is tagged by
+ * `std::true_type` and can process the value, or is tagged by `std::false_type`
+ * and passes the value to the next function by the rank. When passing to the
+ * next function, some trait corresponding to the function is given in place of
+ * the tag; for example, `StringToString`, which can handle `std::string`s, is
+ * invoked with `std::is_same<T, std::string>` as the tag.
+ */
+template <typename T>
+std::string ToString(const T& value);
+
+namespace impl {
+
+// Checks whether the given type `T` defines a member function `ToString`
+
+template <typename T, typename = absl::void_t<>>
+struct has_to_string : std::false_type {};
+
+template <typename T>
+struct has_to_string<T, absl::void_t<decltype(std::declval<T>().ToString())>>
+    : std::true_type {};
+
+template <int I>
+struct ToStringChoice : ToStringChoice<I + 1> {};
+
+template <>
+struct ToStringChoice<6> {};
+
+#if __OBJC__
+
+// Objective-C class
+template <typename T,
+          typename = absl::enable_if_t<objc::is_objc_pointer<T>::value>>
+std::string ToStringImpl(T value, ToStringChoice<0>) {
+  return MakeString([value description]);
+}
+
+#endif  // __OBJC__
+
+// Has `ToString` member function
+template <typename T, typename = absl::enable_if_t<has_to_string<T>::value>>
+std::string ToStringImpl(const T& value, ToStringChoice<1>) {
+  return value.ToString();
+}
+
+// `std::string`
+template <typename T,
+          typename = absl::enable_if_t<std::is_same<std::string, T>::value>>
+std::string ToStringImpl(const T& value, ToStringChoice<2>) {
+  return value;
+}
+
+// `absl::optional`
+template <typename T,
+          typename = absl::enable_if_t<
+              std::is_same<absl::optional<typename T::value_type>, T>::value>>
+std::string ToStringImpl(const T& maybe_value, ToStringChoice<3>) {
+  return maybe_value.has_value() ? ToString(maybe_value.value())
+                                 : std::string{"nullopt"};
+}
+
+// Associative container
+template <typename T,
+          typename = absl::enable_if_t<is_associative_container<T>::value>>
+std::string ToStringImpl(const T& value, ToStringChoice<4>) {
+  std::string contents = absl::StrJoin(
+      value, ", ", [](std::string* out, const typename T::value_type& kv) {
+        out->append(ToString(kv.first));
+        out->append(": ");
+        out->append(ToString(kv.second));
+      });
+  return std::string{"{"} + contents + "}";  // NOLINT(whitespace/braces)
+}
+
+// Container
+template <typename T, typename = absl::enable_if_t<is_iterable<T>::value>>
+std::string ToStringImpl(const T& value, ToStringChoice<5>) {
+  std::string contents = absl::StrJoin(
+      value, ", ", [](std::string* out, const typename T::value_type& element) {
+        out->append(ToString(element));
+      });
+  return std::string{"["} + contents + "]";  // NOLINT(whitespace/braces)
+}
+
+// Fallback
+template <typename T>
+std::string ToStringImpl(const T& value, ToStringChoice<6>) {
+  FormatArg arg{value};
+  return std::string{arg.data(), arg.data() + arg.size()};
+}
+
+}  // namespace impl
+
+template <typename T>
+std::string ToString(const T& value) {
+  return impl::ToStringImpl(value, impl::ToStringChoice<0>{});
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_TO_STRING_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/type_traits.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/type_traits.h
new file mode 100644
index 0000000..131256c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/type_traits.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_TYPE_TRAITS_H_
+#define FIRESTORE_CORE_SRC_UTIL_TYPE_TRAITS_H_
+
+#include <type_traits>
+#include <utility>
+
+#include "absl/meta/type_traits.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// is_iterable
+
+template <typename T, typename = absl::void_t<>>
+struct is_iterable : std::false_type {};
+
+template <typename T>
+struct is_iterable<
+    T,
+    absl::void_t<decltype(std::declval<T>().begin(), std::declval<T>().end())>>
+    : std::true_type {};
+
+// is_associative_container
+
+template <typename T, typename = absl::void_t<>>
+struct is_associative_container : std::false_type {};
+
+template <typename T>
+struct is_associative_container<
+    T,
+    absl::void_t<decltype(std::declval<typename T::mapped_type>())>>
+    : std::true_type {};
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_TYPE_TRAITS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/warnings.h b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/warnings.h
new file mode 100644
index 0000000..beb1def
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/core/src/util/warnings.h	
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_UTIL_WARNINGS_H_
+#define FIRESTORE_CORE_SRC_UTIL_WARNINGS_H_
+
+/**
+ * Macros for suppressing various warnings. Use like this:
+ *
+ * SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+ * #include "header/that/has/warnings.h"
+ * SUPPRESS_END()
+ *
+ * SUPPRESS_DEPRECATED_DECLARATIONS_BEGIN()
+ * #include "header/that/uses/deprecated/stuff.h"
+ * SUPPRESS_END()
+ *
+ * SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN()
+ * SUPPRESS_DEPRECATED_DECLARATIONS_BEGIN()
+ * #include "something/awful.h"
+ * SUPPRESS_END()
+ * SUPPRESS_END()
+ */
+
+// Define some primitives used by the 'public' macros below.
+
+#if defined(__clang__) || defined(__GNUC__)
+#define SUPPRESS_BEGIN_UNIMPLEMENTED_() _Pragma("GCC diagnostic push")
+
+#define SUPPRESS_BEGIN_(name) _Pragma("GCC diagnostic push") _Pragma(name)
+
+#define SUPPRESS_END() _Pragma("GCC diagnostic pop")
+
+#elif defined(_MSC_VER)
+#define SUPPRESS_BEGIN_UNIMPLEMENTED_() __pragma(warning(push))
+
+#define SUPPRESS_BEGIN_(name) \
+  __pragma(warning(push)) __pragma(warning(disable : name))
+
+#define SUPPRESS_END() __pragma(warning(pop))
+
+#else
+#define SUPPRESS_BEGIN_UNIMPLEMENTED_()
+#define SUPPRESS_END()
+#endif
+
+// 'Public' macros.
+
+// Ignore -Wcomma warnings in Clang
+#if defined(__clang__)
+#define SUPPRESS_COMMA_WARNINGS_BEGIN() \
+  SUPPRESS_BEGIN_("GCC diagnostic ignored \"-Wcomma\"")
+#else
+#define SUPPRESS_COMMA_WARNINGS_BEGIN() SUPPRESS_BEGIN_UNIMPLEMENTED_()
+#endif
+
+// Ignore -Wdocumentation warnings in Clang
+#if defined(__clang__)
+#define SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN() \
+  SUPPRESS_BEGIN_("GCC diagnostic ignored \"-Wdocumentation\"")
+#else
+#define SUPPRESS_DOCUMENTATION_WARNINGS_BEGIN() SUPPRESS_BEGIN_UNIMPLEMENTED_()
+#endif
+
+// Ignore the use of deprecated declarations.
+#if defined(__clang__) || defined(__GNUC__)
+#define SUPPRESS_DEPRECATED_DECLARATIONS_BEGIN() \
+  SUPPRESS_BEGIN_("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif defined(_MSC_VER)
+// MSVC compiler warnings can be found here: (Look at the navbar on the left
+// and select the appropriate range):
+// https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warnings-by-compiler-version?view=vs-2017
+#define SUPPRESS_DEPRECATED_DECLARATIONS_BEGIN() SUPPRESS_BEGIN_(4995)
+#else
+#define SUPPRESS_DEPRECATED_DECLARATIONS_BEGIN() SUPPRESS_BEGIN_UNIMPLEMENTED_()
+#endif
+
+#endif  // FIRESTORE_CORE_SRC_UTIL_WARNINGS_H_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Firestore/third_party/nlohmann_json/json.hpp b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/third_party/nlohmann_json/json.hpp
new file mode 100644
index 0000000..a70aaf8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Firestore/third_party/nlohmann_json/json.hpp	
@@ -0,0 +1,25447 @@
+/*
+    __ _____ _____ _____
+ __|  |   __|     |   | |  JSON for Modern C++
+|  |  |__   |  |  | | | |  version 3.9.1
+|_____|_____|_____|_|___|  https://github.com/nlohmann/json
+
+Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+SPDX-License-Identifier: MIT
+Copyright (c) 2013-2019 Niels Lohmann <http://nlohmann.me>.
+
+Permission is hereby  granted, free of charge, to any  person obtaining a copy
+of this software and associated  documentation files (the "Software"), to deal
+in the Software  without restriction, including without  limitation the rights
+to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
+copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
+IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
+FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
+AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
+LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef INCLUDE_NLOHMANN_JSON_HPP_
+#define INCLUDE_NLOHMANN_JSON_HPP_
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3
+#define NLOHMANN_JSON_VERSION_MINOR 9
+#define NLOHMANN_JSON_VERSION_PATCH 1
+
+#include <algorithm> // all_of, find, for_each
+#include <cstddef> // nullptr_t, ptrdiff_t, size_t
+#include <functional> // hash, less
+#include <initializer_list> // initializer_list
+#include <iosfwd> // istream, ostream
+#include <iterator> // random_access_iterator_tag
+#include <memory> // unique_ptr
+#include <numeric> // accumulate
+#include <string> // string, stoi, to_string
+#include <utility> // declval, forward, move, pair, swap
+#include <vector> // vector
+
+// #include <nlohmann/adl_serializer.hpp>
+
+
+#include <utility>
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+
+#include <algorithm> // transform
+#include <array> // array
+#include <forward_list> // forward_list
+#include <iterator> // inserter, front_inserter, end
+#include <map> // map
+#include <string> // string
+#include <tuple> // tuple, make_tuple
+#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
+#include <unordered_map> // unordered_map
+#include <utility> // pair, declval
+#include <valarray> // valarray
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+
+#include <exception> // exception
+#include <stdexcept> // runtime_error
+#include <string> // to_string
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+
+#include <cstddef> // size_t
+
+namespace nlohmann
+{
+namespace detail
+{
+/// struct to capture the start position of the current token
+struct position_t
+{
+    /// the total number of characters read
+    std::size_t chars_read_total = 0;
+    /// the number of characters read in the current line
+    std::size_t chars_read_current_line = 0;
+    /// the number of lines read
+    std::size_t lines_read = 0;
+
+    /// conversion to size_t to preserve SAX interface
+    constexpr operator size_t() const
+    {
+        return chars_read_total;
+    }
+};
+
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+#include <utility> // pair
+// #include <nlohmann/thirdparty/hedley/hedley.hpp>
+/* Hedley - https://nemequ.github.io/hedley
+ * Created by Evan Nemerson <evan@nemerson.com>
+ *
+ * To the extent possible under law, the author(s) have dedicated all
+ * copyright and related and neighboring rights to this software to
+ * the public domain worldwide. This software is distributed without
+ * any warranty.
+ *
+ * For details, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ * SPDX-License-Identifier: CC0-1.0
+ */
+
+#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 13)
+#if defined(JSON_HEDLEY_VERSION)
+    #undef JSON_HEDLEY_VERSION
+#endif
+#define JSON_HEDLEY_VERSION 13
+
+#if defined(JSON_HEDLEY_STRINGIFY_EX)
+    #undef JSON_HEDLEY_STRINGIFY_EX
+#endif
+#define JSON_HEDLEY_STRINGIFY_EX(x) #x
+
+#if defined(JSON_HEDLEY_STRINGIFY)
+    #undef JSON_HEDLEY_STRINGIFY
+#endif
+#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
+
+#if defined(JSON_HEDLEY_CONCAT_EX)
+    #undef JSON_HEDLEY_CONCAT_EX
+#endif
+#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
+
+#if defined(JSON_HEDLEY_CONCAT)
+    #undef JSON_HEDLEY_CONCAT
+#endif
+#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
+
+#if defined(JSON_HEDLEY_CONCAT3_EX)
+    #undef JSON_HEDLEY_CONCAT3_EX
+#endif
+#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
+
+#if defined(JSON_HEDLEY_CONCAT3)
+    #undef JSON_HEDLEY_CONCAT3
+#endif
+#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
+
+#if defined(JSON_HEDLEY_VERSION_ENCODE)
+    #undef JSON_HEDLEY_VERSION_ENCODE
+#endif
+#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
+    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
+
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #undef JSON_HEDLEY_GNUC_VERSION
+#endif
+#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#elif defined(__GNUC__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION)
+    #undef JSON_HEDLEY_MSVC_VERSION
+#endif
+#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
+#elif defined(_MSC_FULL_VER)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
+#elif defined(_MSC_VER)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#endif
+#if !defined(_MSC_VER)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
+#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
+#else
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #undef JSON_HEDLEY_INTEL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
+#elif defined(__INTEL_COMPILER)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #undef JSON_HEDLEY_PGI_VERSION
+#endif
+#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
+    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
+    #undef JSON_HEDLEY_PGI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #undef JSON_HEDLEY_SUNPRO_VERSION
+#endif
+#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
+#elif defined(__SUNPRO_C)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
+#elif defined(__SUNPRO_CC)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
+    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#endif
+#if defined(__EMSCRIPTEN__)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #undef JSON_HEDLEY_ARM_VERSION
+#endif
+#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
+#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
+    #undef JSON_HEDLEY_ARM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #undef JSON_HEDLEY_IBM_VERSION
+#endif
+#if defined(__ibmxl__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
+#elif defined(__xlC__) && defined(__xlC_ver__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
+#elif defined(__xlC__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
+    #undef JSON_HEDLEY_IBM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #undef JSON_HEDLEY_TI_VERSION
+#endif
+#if \
+    defined(__TI_COMPILER_VERSION__) && \
+    ( \
+      defined(__TMS470__) || defined(__TI_ARM__) || \
+      defined(__MSP430__) || \
+      defined(__TMS320C2000__) \
+    )
+#if (__TI_COMPILER_VERSION__ >= 16000000)
+    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
+    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #undef JSON_HEDLEY_TI_CL430_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
+    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
+    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
+    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
+    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #undef JSON_HEDLEY_CRAY_VERSION
+#endif
+#if defined(_CRAYC)
+    #if defined(_RELEASE_PATCHLEVEL)
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
+    #else
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
+    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #undef JSON_HEDLEY_IAR_VERSION
+#endif
+#if defined(__IAR_SYSTEMS_ICC__)
+    #if __VER__ > 1000
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
+    #else
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(VER / 100, __VER__ % 100, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
+    #undef JSON_HEDLEY_IAR_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #undef JSON_HEDLEY_TINYC_VERSION
+#endif
+#if defined(__TINYC__)
+    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
+    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #undef JSON_HEDLEY_DMC_VERSION
+#endif
+#if defined(__DMC__)
+    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
+    #undef JSON_HEDLEY_DMC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #undef JSON_HEDLEY_COMPCERT_VERSION
+#endif
+#if defined(__COMPCERT_VERSION__)
+    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
+    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #undef JSON_HEDLEY_PELLES_VERSION
+#endif
+#if defined(__POCC__)
+    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
+    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #undef JSON_HEDLEY_GCC_VERSION
+#endif
+#if \
+    defined(JSON_HEDLEY_GNUC_VERSION) && \
+    !defined(__clang__) && \
+    !defined(JSON_HEDLEY_INTEL_VERSION) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_ARM_VERSION) && \
+    !defined(JSON_HEDLEY_TI_VERSION) && \
+    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
+    !defined(__COMPCERT__)
+    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) __has_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) __has_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#endif
+#if \
+    defined(__has_cpp_attribute) && \
+    defined(__cplusplus) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#endif
+#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#elif \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_IAR_VERSION) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
+    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_BUILTIN)
+    #undef JSON_HEDLEY_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_FEATURE)
+    #undef JSON_HEDLEY_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GCC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_EXTENSION)
+    #undef JSON_HEDLEY_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_WARNING)
+    #undef JSON_HEDLEY_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
+    #undef JSON_HEDLEY_GNUC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
+    #undef JSON_HEDLEY_GCC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
+#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    else
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    endif
+#  endif
+#endif
+#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
+#endif
+
+#if defined(JSON_HEDLEY_CONST_CAST)
+    #undef JSON_HEDLEY_CONST_CAST
+#endif
+#if defined(__cplusplus)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
+#elif \
+  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_REINTERPRET_CAST)
+    #undef JSON_HEDLEY_REINTERPRET_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_CAST)
+    #undef JSON_HEDLEY_STATIC_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_CPP_CAST)
+    #undef JSON_HEDLEY_CPP_CAST
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
+    ((T) (expr)) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("diag_suppress=Pe137") \
+    JSON_HEDLEY_DIAGNOSTIC_POP \
+#  else
+#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
+#  endif
+#else
+#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
+#endif
+
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
+    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
+    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
+#else
+    #define JSON_HEDLEY_PRAGMA(value)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
+    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#endif
+#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
+    #undef JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
+    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
+#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
+    #define JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+
+#if defined(JSON_HEDLEY_DEPRECATED)
+    #undef JSON_HEDLEY_DEPRECATED
+#endif
+#if defined(JSON_HEDLEY_DEPRECATED_FOR)
+    #undef JSON_HEDLEY_DEPRECATED_FOR
+#endif
+#if JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
+#elif defined(__cplusplus) && (__cplusplus >= 201402L)
+    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
+#elif \
+    JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
+#else
+    #define JSON_HEDLEY_DEPRECATED(since)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
+#endif
+
+#if defined(JSON_HEDLEY_UNAVAILABLE)
+    #undef JSON_HEDLEY_UNAVAILABLE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
+#else
+    #define JSON_HEDLEY_UNAVAILABLE(available_since)
+#endif
+
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#endif
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#endif
+#if (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
+#elif defined(_Check_return_) /* SAL */
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
+#else
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
+#endif
+
+#if defined(JSON_HEDLEY_SENTINEL)
+    #undef JSON_HEDLEY_SENTINEL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0)
+    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
+#else
+    #define JSON_HEDLEY_SENTINEL(position)
+#endif
+
+#if defined(JSON_HEDLEY_NO_RETURN)
+    #undef JSON_HEDLEY_NO_RETURN
+#endif
+#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NO_RETURN __noreturn
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #define JSON_HEDLEY_NO_RETURN _Noreturn
+#elif defined(__cplusplus) && (__cplusplus >= 201103L)
+    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#else
+    #define JSON_HEDLEY_NO_RETURN
+#endif
+
+#if defined(JSON_HEDLEY_NO_ESCAPE)
+    #undef JSON_HEDLEY_NO_ESCAPE
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
+    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
+#else
+    #define JSON_HEDLEY_NO_ESCAPE
+#endif
+
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #undef JSON_HEDLEY_UNREACHABLE
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
+    #undef JSON_HEDLEY_UNREACHABLE_RETURN
+#endif
+#if defined(JSON_HEDLEY_ASSUME)
+    #undef JSON_HEDLEY_ASSUME
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
+#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
+    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
+#elif \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+    #if defined(__cplusplus)
+        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
+    #endif
+#endif
+#if \
+    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5)
+    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
+#elif defined(JSON_HEDLEY_ASSUME)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+#if !defined(JSON_HEDLEY_ASSUME)
+    #if defined(JSON_HEDLEY_UNREACHABLE)
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
+    #endif
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #if  \
+        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
+    #else
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
+    #endif
+#else
+    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
+#endif
+#if !defined(JSON_HEDLEY_UNREACHABLE)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+
+JSON_HEDLEY_DIAGNOSTIC_PUSH
+#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
+    #pragma clang diagnostic ignored "-Wpedantic"
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
+    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
+#endif
+#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
+    #if defined(__clang__)
+        #pragma clang diagnostic ignored "-Wvariadic-macros"
+    #elif defined(JSON_HEDLEY_GCC_VERSION)
+        #pragma GCC diagnostic ignored "-Wvariadic-macros"
+    #endif
+#endif
+#if defined(JSON_HEDLEY_NON_NULL)
+    #undef JSON_HEDLEY_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#else
+    #define JSON_HEDLEY_NON_NULL(...)
+#endif
+JSON_HEDLEY_DIAGNOSTIC_POP
+
+#if defined(JSON_HEDLEY_PRINTF_FORMAT)
+    #undef JSON_HEDLEY_PRINTF_FORMAT
+#endif
+#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
+#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
+#else
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
+#endif
+
+#if defined(JSON_HEDLEY_CONSTEXPR)
+    #undef JSON_HEDLEY_CONSTEXPR
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
+    #endif
+#endif
+#if !defined(JSON_HEDLEY_CONSTEXPR)
+    #define JSON_HEDLEY_CONSTEXPR
+#endif
+
+#if defined(JSON_HEDLEY_PREDICT)
+    #undef JSON_HEDLEY_PREDICT
+#endif
+#if defined(JSON_HEDLEY_LIKELY)
+    #undef JSON_HEDLEY_LIKELY
+#endif
+#if defined(JSON_HEDLEY_UNLIKELY)
+    #undef JSON_HEDLEY_UNLIKELY
+#endif
+#if defined(JSON_HEDLEY_UNPREDICTABLE)
+    #undef JSON_HEDLEY_UNPREDICTABLE
+#endif
+#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
+#endif
+#if \
+  JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0)
+#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
+#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
+#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
+#elif \
+  JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
+  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0)
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
+    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
+#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
+#else
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
+#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
+#endif
+#if !defined(JSON_HEDLEY_UNPREDICTABLE)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
+#endif
+
+#if defined(JSON_HEDLEY_MALLOC)
+    #undef JSON_HEDLEY_MALLOC
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(14, 0, 0)
+    #define JSON_HEDLEY_MALLOC __declspec(restrict)
+#else
+    #define JSON_HEDLEY_MALLOC
+#endif
+
+#if defined(JSON_HEDLEY_PURE)
+    #undef JSON_HEDLEY_PURE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+#  define JSON_HEDLEY_PURE __attribute__((__pure__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
+    )
+#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
+#else
+#  define JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_CONST)
+    #undef JSON_HEDLEY_CONST
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_CONST __attribute__((__const__))
+#elif \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
+#else
+    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_RESTRICT)
+    #undef JSON_HEDLEY_RESTRICT
+#endif
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT restrict
+#elif \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    defined(__clang__)
+    #define JSON_HEDLEY_RESTRICT __restrict
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT _Restrict
+#else
+    #define JSON_HEDLEY_RESTRICT
+#endif
+
+#if defined(JSON_HEDLEY_INLINE)
+    #undef JSON_HEDLEY_INLINE
+#endif
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    (defined(__cplusplus) && (__cplusplus >= 199711L))
+    #define JSON_HEDLEY_INLINE inline
+#elif \
+    defined(JSON_HEDLEY_GCC_VERSION) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
+    #define JSON_HEDLEY_INLINE __inline__
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_INLINE __inline
+#else
+    #define JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_ALWAYS_INLINE)
+    #undef JSON_HEDLEY_ALWAYS_INLINE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
+    )
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
+#else
+#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_NEVER_INLINE)
+    #undef JSON_HEDLEY_NEVER_INLINE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#else
+    #define JSON_HEDLEY_NEVER_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_PRIVATE)
+    #undef JSON_HEDLEY_PRIVATE
+#endif
+#if defined(JSON_HEDLEY_PUBLIC)
+    #undef JSON_HEDLEY_PUBLIC
+#endif
+#if defined(JSON_HEDLEY_IMPORT)
+    #undef JSON_HEDLEY_IMPORT
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+#  define JSON_HEDLEY_PRIVATE
+#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
+#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
+#else
+#  if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    ( \
+      defined(__TI_EABI__) && \
+      ( \
+        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
+      ) \
+    )
+#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
+#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
+#  else
+#    define JSON_HEDLEY_PRIVATE
+#    define JSON_HEDLEY_PUBLIC
+#  endif
+#  define JSON_HEDLEY_IMPORT    extern
+#endif
+
+#if defined(JSON_HEDLEY_NO_THROW)
+    #undef JSON_HEDLEY_NO_THROW
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
+#else
+    #define JSON_HEDLEY_NO_THROW
+#endif
+
+#if defined(JSON_HEDLEY_FALL_THROUGH)
+    #undef JSON_HEDLEY_FALL_THROUGH
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0)
+    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
+#elif defined(__fallthrough) /* SAL */
+    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
+#else
+    #define JSON_HEDLEY_FALL_THROUGH
+#endif
+
+#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
+    #undef JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
+#elif defined(_Ret_notnull_) /* SAL */
+    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
+#else
+    #define JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+
+#if defined(JSON_HEDLEY_ARRAY_PARAM)
+    #undef JSON_HEDLEY_ARRAY_PARAM
+#endif
+#if \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
+    !defined(__STDC_NO_VLA__) && \
+    !defined(__cplusplus) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
+#else
+    #define JSON_HEDLEY_ARRAY_PARAM(name)
+#endif
+
+#if defined(JSON_HEDLEY_IS_CONSTANT)
+    #undef JSON_HEDLEY_IS_CONSTANT
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
+    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#endif
+/* JSON_HEDLEY_IS_CONSTEXPR_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #undef JSON_HEDLEY_IS_CONSTEXPR_
+#endif
+#if \
+    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0)
+    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
+#endif
+#if !defined(__cplusplus)
+#  if \
+       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
+#endif
+#  elif \
+       ( \
+          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
+          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
+          !defined(JSON_HEDLEY_PGI_VERSION) && \
+          !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
+#endif
+#  elif \
+       defined(JSON_HEDLEY_GCC_VERSION) || \
+       defined(JSON_HEDLEY_INTEL_VERSION) || \
+       defined(JSON_HEDLEY_TINYC_VERSION) || \
+       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
+       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
+       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
+       defined(__clang__)
+#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
+        sizeof(void) != \
+        sizeof(*( \
+                  1 ? \
+                  ((void*) ((expr) * 0L) ) : \
+((struct { char v[sizeof(void) * 2]; } *) 1) \
+                ) \
+              ) \
+                                            )
+#  endif
+#endif
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
+#else
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
+    #undef JSON_HEDLEY_BEGIN_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_END_C_DECLS)
+    #undef JSON_HEDLEY_END_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_C_DECL)
+    #undef JSON_HEDLEY_C_DECL
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
+    #define JSON_HEDLEY_END_C_DECLS }
+    #define JSON_HEDLEY_C_DECL extern "C"
+#else
+    #define JSON_HEDLEY_BEGIN_C_DECLS
+    #define JSON_HEDLEY_END_C_DECLS
+    #define JSON_HEDLEY_C_DECL
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_ASSERT)
+    #undef JSON_HEDLEY_STATIC_ASSERT
+#endif
+#if \
+  !defined(__cplusplus) && ( \
+      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
+      JSON_HEDLEY_HAS_FEATURE(c_static_assert) || \
+      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
+      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+      defined(_Static_assert) \
+    )
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
+#elif \
+  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0)
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
+#else
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
+#endif
+
+#if defined(JSON_HEDLEY_NULL)
+    #undef JSON_HEDLEY_NULL
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
+    #elif defined(NULL)
+        #define JSON_HEDLEY_NULL NULL
+    #else
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
+    #endif
+#elif defined(NULL)
+    #define JSON_HEDLEY_NULL NULL
+#else
+    #define JSON_HEDLEY_NULL ((void*) 0)
+#endif
+
+#if defined(JSON_HEDLEY_MESSAGE)
+    #undef JSON_HEDLEY_MESSAGE
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_MESSAGE(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(message msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
+#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_WARNING)
+    #undef JSON_HEDLEY_WARNING
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_WARNING(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(clang warning msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_REQUIRE)
+    #undef JSON_HEDLEY_REQUIRE
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_MSG)
+    #undef JSON_HEDLEY_REQUIRE_MSG
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
+#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
+#    define JSON_HEDLEY_REQUIRE(expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), msg, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
+#  endif
+#else
+#  define JSON_HEDLEY_REQUIRE(expr)
+#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS)
+    #undef JSON_HEDLEY_FLAGS
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum)
+    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS_CAST)
+    #undef JSON_HEDLEY_FLAGS_CAST
+#endif
+#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        _Pragma("warning(disable:188)") \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
+#endif
+
+#if defined(JSON_HEDLEY_EMPTY_BASES)
+    #undef JSON_HEDLEY_EMPTY_BASES
+#endif
+#if JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)
+    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
+#else
+    #define JSON_HEDLEY_EMPTY_BASES
+#endif
+
+/* Remaining macros are deprecated. */
+
+#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
+#else
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
+    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#endif
+#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
+    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
+    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#endif
+#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
+    #undef JSON_HEDLEY_CLANG_HAS_WARNING
+#endif
+#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
+
+#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
+
+
+// This file contains all internal macro definitions
+// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
+
+// exclude unsupported compilers
+#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
+    #if defined(__clang__)
+        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
+            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
+        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
+            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #endif
+#endif
+
+// C++ language standard detection
+#if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+    #define JSON_HAS_CPP_20
+    #define JSON_HAS_CPP_17
+    #define JSON_HAS_CPP_14
+#elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+    #define JSON_HAS_CPP_17
+    #define JSON_HAS_CPP_14
+#elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+    #define JSON_HAS_CPP_14
+#endif
+
+// disable float-equal warnings on GCC/clang
+#if defined(__clang__) || defined(__GNUC__) || defined(__GNUG__)
+    #pragma GCC diagnostic push
+    #pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+
+// disable documentation warnings on clang
+#if defined(__clang__)
+    #pragma GCC diagnostic push
+    #pragma GCC diagnostic ignored "-Wdocumentation"
+#endif
+
+// allow to disable exceptions
+#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
+    #define JSON_THROW(exception) throw exception
+    #define JSON_TRY try
+    #define JSON_CATCH(exception) catch(exception)
+    #define JSON_INTERNAL_CATCH(exception) catch(exception)
+#else
+    #include <cstdlib>
+    #define JSON_THROW(exception) std::abort()
+    #define JSON_TRY if(true)
+    #define JSON_CATCH(exception) if(false)
+    #define JSON_INTERNAL_CATCH(exception) if(false)
+#endif
+
+// override exception macros
+#if defined(JSON_THROW_USER)
+    #undef JSON_THROW
+    #define JSON_THROW JSON_THROW_USER
+#endif
+#if defined(JSON_TRY_USER)
+    #undef JSON_TRY
+    #define JSON_TRY JSON_TRY_USER
+#endif
+#if defined(JSON_CATCH_USER)
+    #undef JSON_CATCH
+    #define JSON_CATCH JSON_CATCH_USER
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
+#endif
+#if defined(JSON_INTERNAL_CATCH_USER)
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
+#endif
+
+// allow to override assert
+#if !defined(JSON_ASSERT)
+    #include <cassert> // assert
+    #define JSON_ASSERT(x) assert(x)
+#endif
+
+/*!
+@brief macro to briefly define a mapping between an enum and JSON
+@def NLOHMANN_JSON_SERIALIZE_ENUM
+@since version 3.4.0
+*/
+#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
+    template<typename BasicJsonType>                                                            \
+    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
+        {                                                                                       \
+            return ej_pair.first == e;                                                          \
+        });                                                                                     \
+        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
+    }                                                                                           \
+    template<typename BasicJsonType>                                                            \
+    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
+        {                                                                                       \
+            return ej_pair.second == j;                                                         \
+        });                                                                                     \
+        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
+    }
+
+// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
+// may be removed in the future once the class is split.
+
+#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
+    template<template<typename, typename, typename...> class ObjectType,   \
+             template<typename, typename...> class ArrayType,              \
+             class StringType, class BooleanType, class NumberIntegerType, \
+             class NumberUnsignedType, class NumberFloatType,              \
+             template<typename> class AllocatorType,                       \
+             template<typename, typename = void> class JSONSerializer,     \
+             class BinaryType>
+
+#define NLOHMANN_BASIC_JSON_TPL                                            \
+    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
+    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
+    AllocatorType, JSONSerializer, BinaryType>
+
+// Macros to simplify conversion from/to types
+
+#define NLOHMANN_JSON_EXPAND( x ) x
+#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
+#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
+        NLOHMANN_JSON_PASTE64, \
+        NLOHMANN_JSON_PASTE63, \
+        NLOHMANN_JSON_PASTE62, \
+        NLOHMANN_JSON_PASTE61, \
+        NLOHMANN_JSON_PASTE60, \
+        NLOHMANN_JSON_PASTE59, \
+        NLOHMANN_JSON_PASTE58, \
+        NLOHMANN_JSON_PASTE57, \
+        NLOHMANN_JSON_PASTE56, \
+        NLOHMANN_JSON_PASTE55, \
+        NLOHMANN_JSON_PASTE54, \
+        NLOHMANN_JSON_PASTE53, \
+        NLOHMANN_JSON_PASTE52, \
+        NLOHMANN_JSON_PASTE51, \
+        NLOHMANN_JSON_PASTE50, \
+        NLOHMANN_JSON_PASTE49, \
+        NLOHMANN_JSON_PASTE48, \
+        NLOHMANN_JSON_PASTE47, \
+        NLOHMANN_JSON_PASTE46, \
+        NLOHMANN_JSON_PASTE45, \
+        NLOHMANN_JSON_PASTE44, \
+        NLOHMANN_JSON_PASTE43, \
+        NLOHMANN_JSON_PASTE42, \
+        NLOHMANN_JSON_PASTE41, \
+        NLOHMANN_JSON_PASTE40, \
+        NLOHMANN_JSON_PASTE39, \
+        NLOHMANN_JSON_PASTE38, \
+        NLOHMANN_JSON_PASTE37, \
+        NLOHMANN_JSON_PASTE36, \
+        NLOHMANN_JSON_PASTE35, \
+        NLOHMANN_JSON_PASTE34, \
+        NLOHMANN_JSON_PASTE33, \
+        NLOHMANN_JSON_PASTE32, \
+        NLOHMANN_JSON_PASTE31, \
+        NLOHMANN_JSON_PASTE30, \
+        NLOHMANN_JSON_PASTE29, \
+        NLOHMANN_JSON_PASTE28, \
+        NLOHMANN_JSON_PASTE27, \
+        NLOHMANN_JSON_PASTE26, \
+        NLOHMANN_JSON_PASTE25, \
+        NLOHMANN_JSON_PASTE24, \
+        NLOHMANN_JSON_PASTE23, \
+        NLOHMANN_JSON_PASTE22, \
+        NLOHMANN_JSON_PASTE21, \
+        NLOHMANN_JSON_PASTE20, \
+        NLOHMANN_JSON_PASTE19, \
+        NLOHMANN_JSON_PASTE18, \
+        NLOHMANN_JSON_PASTE17, \
+        NLOHMANN_JSON_PASTE16, \
+        NLOHMANN_JSON_PASTE15, \
+        NLOHMANN_JSON_PASTE14, \
+        NLOHMANN_JSON_PASTE13, \
+        NLOHMANN_JSON_PASTE12, \
+        NLOHMANN_JSON_PASTE11, \
+        NLOHMANN_JSON_PASTE10, \
+        NLOHMANN_JSON_PASTE9, \
+        NLOHMANN_JSON_PASTE8, \
+        NLOHMANN_JSON_PASTE7, \
+        NLOHMANN_JSON_PASTE6, \
+        NLOHMANN_JSON_PASTE5, \
+        NLOHMANN_JSON_PASTE4, \
+        NLOHMANN_JSON_PASTE3, \
+        NLOHMANN_JSON_PASTE2, \
+        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
+#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
+#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
+#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
+#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
+#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
+#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
+#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
+#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
+#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
+#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
+#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
+#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
+#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
+#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
+#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
+#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
+#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
+#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
+#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
+#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
+#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
+#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
+#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
+#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
+#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
+#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
+#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
+#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
+#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
+#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
+#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
+#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
+#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
+#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
+#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
+#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
+#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
+#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
+#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
+#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
+#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
+#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
+#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
+#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
+#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
+#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
+#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
+#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
+#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
+#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
+
+#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
+#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_USE_IMPLICIT_CONVERSIONS 1
+#endif
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_EXPLICIT
+#else
+    #define JSON_EXPLICIT explicit
+#endif
+
+
+namespace nlohmann
+{
+namespace detail
+{
+////////////////
+// exceptions //
+////////////////
+
+/*!
+@brief general exception of the @ref basic_json class
+
+This class is an extension of `std::exception` objects with a member @a id for
+exception ids. It is used as the base class for all exceptions thrown by the
+@ref basic_json class. This class can hence be used as "wildcard" to catch
+exceptions.
+
+Subclasses:
+- @ref parse_error for exceptions indicating a parse error
+- @ref invalid_iterator for exceptions indicating errors with iterators
+- @ref type_error for exceptions indicating executing a member function with
+                  a wrong type
+- @ref out_of_range for exceptions indicating access out of the defined range
+- @ref other_error for exceptions indicating other library errors
+
+@internal
+@note To have nothrow-copy-constructible exceptions, we internally use
+      `std::runtime_error` which can cope with arbitrary-length error messages.
+      Intermediate strings are built with static functions and then passed to
+      the actual constructor.
+@endinternal
+
+@liveexample{The following code shows how arbitrary library exceptions can be
+caught.,exception}
+
+@since version 3.0.0
+*/
+class exception : public std::exception
+{
+  public:
+    /// returns the explanatory string
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* what() const noexcept override
+    {
+        return m.what();
+    }
+
+    /// the id of the exception
+    const int id;
+
+  protected:
+    JSON_HEDLEY_NON_NULL(3)
+    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {}
+
+    static std::string name(const std::string& ename, int id_)
+    {
+        return "[json.exception." + ename + "." + std::to_string(id_) + "] ";
+    }
+
+  private:
+    /// an exception object as storage for error messages
+    std::runtime_error m;
+};
+
+/*!
+@brief exception indicating a parse error
+
+This exception is thrown by the library when a parse error occurs. Parse errors
+can occur during the deserialization of JSON text, CBOR, MessagePack, as well
+as when using JSON Patch.
+
+Member @a byte holds the byte index of the last read character in the input
+file.
+
+Exceptions have ids 1xx.
+
+name / id                      | example message | description
+------------------------------ | --------------- | -------------------------
+json.exception.parse_error.101 | parse error at 2: unexpected end of input; expected string literal | This error indicates a syntax error while deserializing a JSON text. The error message describes that an unexpected token (character) was encountered, and the member @a byte indicates the error position.
+json.exception.parse_error.102 | parse error at 14: missing or wrong low surrogate | JSON uses the `\uxxxx` format to describe Unicode characters. Code points above above 0xFFFF are split into two `\uxxxx` entries ("surrogate pairs"). This error indicates that the surrogate pair is incomplete or contains an invalid code point.
+json.exception.parse_error.103 | parse error: code points above 0x10FFFF are invalid | Unicode supports code points up to 0x10FFFF. Code points above 0x10FFFF are invalid.
+json.exception.parse_error.104 | parse error: JSON patch must be an array of objects | [RFC 6902](https://tools.ietf.org/html/rfc6902) requires a JSON Patch document to be a JSON document that represents an array of objects.
+json.exception.parse_error.105 | parse error: operation must have string member 'op' | An operation of a JSON Patch document must contain exactly one "op" member, whose value indicates the operation to perform. Its value must be one of "add", "remove", "replace", "move", "copy", or "test"; other values are errors.
+json.exception.parse_error.106 | parse error: array index '01' must not begin with '0' | An array index in a JSON Pointer ([RFC 6901](https://tools.ietf.org/html/rfc6901)) may be `0` or any number without a leading `0`.
+json.exception.parse_error.107 | parse error: JSON pointer must be empty or begin with '/' - was: 'foo' | A JSON Pointer must be a Unicode string containing a sequence of zero or more reference tokens, each prefixed by a `/` character.
+json.exception.parse_error.108 | parse error: escape character '~' must be followed with '0' or '1' | In a JSON Pointer, only `~0` and `~1` are valid escape sequences.
+json.exception.parse_error.109 | parse error: array index 'one' is not a number | A JSON Pointer array index must be a number.
+json.exception.parse_error.110 | parse error at 1: cannot read 2 bytes from vector | When parsing CBOR or MessagePack, the byte vector ends before the complete value has been read.
+json.exception.parse_error.112 | parse error at 1: error reading CBOR; last byte: 0xF8 | Not all types of CBOR or MessagePack are supported. This exception occurs if an unsupported byte was read.
+json.exception.parse_error.113 | parse error at 2: expected a CBOR string; last byte: 0x98 | While parsing a map key, a value that is not a string has been read.
+json.exception.parse_error.114 | parse error: Unsupported BSON record type 0x0F | The parsing of the corresponding BSON record type is not implemented (yet).
+json.exception.parse_error.115 | parse error at byte 5: syntax error while parsing UBJSON high-precision number: invalid number text: 1A | A UBJSON high-precision number could not be parsed.
+
+@note For an input with n bytes, 1 is the index of the first character and n+1
+      is the index of the terminating null byte or the end of file. This also
+      holds true when reading a byte vector (CBOR or MessagePack).
+
+@liveexample{The following code shows how a `parse_error` exception can be
+caught.,parse_error}
+
+@sa - @ref exception for the base class of the library exceptions
+@sa - @ref invalid_iterator for exceptions indicating errors with iterators
+@sa - @ref type_error for exceptions indicating executing a member function with
+                    a wrong type
+@sa - @ref out_of_range for exceptions indicating access out of the defined range
+@sa - @ref other_error for exceptions indicating other library errors
+
+@since version 3.0.0
+*/
+class parse_error : public exception
+{
+  public:
+    /*!
+    @brief create a parse error exception
+    @param[in] id_       the id of the exception
+    @param[in] pos       the position where the error occurred (or with
+                         chars_read_total=0 if the position cannot be
+                         determined)
+    @param[in] what_arg  the explanatory string
+    @return parse_error object
+    */
+    static parse_error create(int id_, const position_t& pos, const std::string& what_arg)
+    {
+        std::string w = exception::name("parse_error", id_) + "parse error" +
+                        position_string(pos) + ": " + what_arg;
+        return parse_error(id_, pos.chars_read_total, w.c_str());
+    }
+
+    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg)
+    {
+        std::string w = exception::name("parse_error", id_) + "parse error" +
+                        (byte_ != 0 ? (" at byte " + std::to_string(byte_)) : "") +
+                        ": " + what_arg;
+        return parse_error(id_, byte_, w.c_str());
+    }
+
+    /*!
+    @brief byte index of the parse error
+
+    The byte index of the last read character in the input file.
+
+    @note For an input with n bytes, 1 is the index of the first character and
+          n+1 is the index of the terminating null byte or the end of file.
+          This also holds true when reading a byte vector (CBOR or MessagePack).
+    */
+    const std::size_t byte;
+
+  private:
+    parse_error(int id_, std::size_t byte_, const char* what_arg)
+        : exception(id_, what_arg), byte(byte_) {}
+
+    static std::string position_string(const position_t& pos)
+    {
+        return " at line " + std::to_string(pos.lines_read + 1) +
+               ", column " + std::to_string(pos.chars_read_current_line);
+    }
+};
+
+/*!
+@brief exception indicating errors with iterators
+
+This exception is thrown if iterators passed to a library function do not match
+the expected semantics.
+
+Exceptions have ids 2xx.
+
+name / id                           | example message | description
+----------------------------------- | --------------- | -------------------------
+json.exception.invalid_iterator.201 | iterators are not compatible | The iterators passed to constructor @ref basic_json(InputIT first, InputIT last) are not compatible, meaning they do not belong to the same container. Therefore, the range (@a first, @a last) is invalid.
+json.exception.invalid_iterator.202 | iterator does not fit current value | In an erase or insert function, the passed iterator @a pos does not belong to the JSON value for which the function was called. It hence does not define a valid position for the deletion/insertion.
+json.exception.invalid_iterator.203 | iterators do not fit current value | Either iterator passed to function @ref erase(IteratorType first, IteratorType last) does not belong to the JSON value from which values shall be erased. It hence does not define a valid range to delete values from.
+json.exception.invalid_iterator.204 | iterators out of range | When an iterator range for a primitive type (number, boolean, or string) is passed to a constructor or an erase function, this range has to be exactly (@ref begin(), @ref end()), because this is the only way the single stored value is expressed. All other ranges are invalid.
+json.exception.invalid_iterator.205 | iterator out of range | When an iterator for a primitive type (number, boolean, or string) is passed to an erase function, the iterator has to be the @ref begin() iterator, because it is the only way to address the stored value. All other iterators are invalid.
+json.exception.invalid_iterator.206 | cannot construct with iterators from null | The iterators passed to constructor @ref basic_json(InputIT first, InputIT last) belong to a JSON null value and hence to not define a valid range.
+json.exception.invalid_iterator.207 | cannot use key() for non-object iterators | The key() member function can only be used on iterators belonging to a JSON object, because other types do not have a concept of a key.
+json.exception.invalid_iterator.208 | cannot use operator[] for object iterators | The operator[] to specify a concrete offset cannot be used on iterators belonging to a JSON object, because JSON objects are unordered.
+json.exception.invalid_iterator.209 | cannot use offsets with object iterators | The offset operators (+, -, +=, -=) cannot be used on iterators belonging to a JSON object, because JSON objects are unordered.
+json.exception.invalid_iterator.210 | iterators do not fit | The iterator range passed to the insert function are not compatible, meaning they do not belong to the same container. Therefore, the range (@a first, @a last) is invalid.
+json.exception.invalid_iterator.211 | passed iterators may not belong to container | The iterator range passed to the insert function must not be a subrange of the container to insert to.
+json.exception.invalid_iterator.212 | cannot compare iterators of different containers | When two iterators are compared, they must belong to the same container.
+json.exception.invalid_iterator.213 | cannot compare order of object iterators | The order of object iterators cannot be compared, because JSON objects are unordered.
+json.exception.invalid_iterator.214 | cannot get value | Cannot get value for iterator: Either the iterator belongs to a null value or it is an iterator to a primitive type (number, boolean, or string), but the iterator is different to @ref begin().
+
+@liveexample{The following code shows how an `invalid_iterator` exception can be
+caught.,invalid_iterator}
+
+@sa - @ref exception for the base class of the library exceptions
+@sa - @ref parse_error for exceptions indicating a parse error
+@sa - @ref type_error for exceptions indicating executing a member function with
+                    a wrong type
+@sa - @ref out_of_range for exceptions indicating access out of the defined range
+@sa - @ref other_error for exceptions indicating other library errors
+
+@since version 3.0.0
+*/
+class invalid_iterator : public exception
+{
+  public:
+    static invalid_iterator create(int id_, const std::string& what_arg)
+    {
+        std::string w = exception::name("invalid_iterator", id_) + what_arg;
+        return invalid_iterator(id_, w.c_str());
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    invalid_iterator(int id_, const char* what_arg)
+        : exception(id_, what_arg) {}
+};
+
+/*!
+@brief exception indicating executing a member function with a wrong type
+
+This exception is thrown in case of a type error; that is, a library function is
+executed on a JSON value whose type does not match the expected semantics.
+
+Exceptions have ids 3xx.
+
+name / id                     | example message | description
+----------------------------- | --------------- | -------------------------
+json.exception.type_error.301 | cannot create object from initializer list | To create an object from an initializer list, the initializer list must consist only of a list of pairs whose first element is a string. When this constraint is violated, an array is created instead.
+json.exception.type_error.302 | type must be object, but is array | During implicit or explicit value conversion, the JSON type must be compatible to the target type. For instance, a JSON string can only be converted into string types, but not into numbers or boolean types.
+json.exception.type_error.303 | incompatible ReferenceType for get_ref, actual type is object | To retrieve a reference to a value stored in a @ref basic_json object with @ref get_ref, the type of the reference must match the value type. For instance, for a JSON array, the @a ReferenceType must be @ref array_t &.
+json.exception.type_error.304 | cannot use at() with string | The @ref at() member functions can only be executed for certain JSON types.
+json.exception.type_error.305 | cannot use operator[] with string | The @ref operator[] member functions can only be executed for certain JSON types.
+json.exception.type_error.306 | cannot use value() with string | The @ref value() member functions can only be executed for certain JSON types.
+json.exception.type_error.307 | cannot use erase() with string | The @ref erase() member functions can only be executed for certain JSON types.
+json.exception.type_error.308 | cannot use push_back() with string | The @ref push_back() and @ref operator+= member functions can only be executed for certain JSON types.
+json.exception.type_error.309 | cannot use insert() with | The @ref insert() member functions can only be executed for certain JSON types.
+json.exception.type_error.310 | cannot use swap() with number | The @ref swap() member functions can only be executed for certain JSON types.
+json.exception.type_error.311 | cannot use emplace_back() with string | The @ref emplace_back() member function can only be executed for certain JSON types.
+json.exception.type_error.312 | cannot use update() with string | The @ref update() member functions can only be executed for certain JSON types.
+json.exception.type_error.313 | invalid value to unflatten | The @ref unflatten function converts an object whose keys are JSON Pointers back into an arbitrary nested JSON value. The JSON Pointers must not overlap, because then the resulting value would not be well defined.
+json.exception.type_error.314 | only objects can be unflattened | The @ref unflatten function only works for an object whose keys are JSON Pointers.
+json.exception.type_error.315 | values in object must be primitive | The @ref unflatten function only works for an object whose keys are JSON Pointers and whose values are primitive.
+json.exception.type_error.316 | invalid UTF-8 byte at index 10: 0x7E | The @ref dump function only works with UTF-8 encoded strings; that is, if you assign a `std::string` to a JSON value, make sure it is UTF-8 encoded. |
+json.exception.type_error.317 | JSON value cannot be serialized to requested format | The dynamic type of the object cannot be represented in the requested serialization format (e.g. a raw `true` or `null` JSON object cannot be serialized to BSON) |
+
+@liveexample{The following code shows how a `type_error` exception can be
+caught.,type_error}
+
+@sa - @ref exception for the base class of the library exceptions
+@sa - @ref parse_error for exceptions indicating a parse error
+@sa - @ref invalid_iterator for exceptions indicating errors with iterators
+@sa - @ref out_of_range for exceptions indicating access out of the defined range
+@sa - @ref other_error for exceptions indicating other library errors
+
+@since version 3.0.0
+*/
+class type_error : public exception
+{
+  public:
+    static type_error create(int id_, const std::string& what_arg)
+    {
+        std::string w = exception::name("type_error", id_) + what_arg;
+        return type_error(id_, w.c_str());
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/*!
+@brief exception indicating access out of the defined range
+
+This exception is thrown in case a library function is called on an input
+parameter that exceeds the expected range, for instance in case of array
+indices or nonexisting object keys.
+
+Exceptions have ids 4xx.
+
+name / id                       | example message | description
+------------------------------- | --------------- | -------------------------
+json.exception.out_of_range.401 | array index 3 is out of range | The provided array index @a i is larger than @a size-1.
+json.exception.out_of_range.402 | array index '-' (3) is out of range | The special array index `-` in a JSON Pointer never describes a valid element of the array, but the index past the end. That is, it can only be used to add elements at this position, but not to read it.
+json.exception.out_of_range.403 | key 'foo' not found | The provided key was not found in the JSON object.
+json.exception.out_of_range.404 | unresolved reference token 'foo' | A reference token in a JSON Pointer could not be resolved.
+json.exception.out_of_range.405 | JSON pointer has no parent | The JSON Patch operations 'remove' and 'add' can not be applied to the root element of the JSON value.
+json.exception.out_of_range.406 | number overflow parsing '10E1000' | A parsed number could not be stored as without changing it to NaN or INF.
+json.exception.out_of_range.407 | number overflow serializing '9223372036854775808' | UBJSON and BSON only support integer numbers up to 9223372036854775807. (until version 3.8.0) |
+json.exception.out_of_range.408 | excessive array size: 8658170730974374167 | The size (following `#`) of an UBJSON array or object exceeds the maximal capacity. |
+json.exception.out_of_range.409 | BSON key cannot contain code point U+0000 (at byte 2) | Key identifiers to be serialized to BSON cannot contain code point U+0000, since the key is stored as zero-terminated c-string |
+
+@liveexample{The following code shows how an `out_of_range` exception can be
+caught.,out_of_range}
+
+@sa - @ref exception for the base class of the library exceptions
+@sa - @ref parse_error for exceptions indicating a parse error
+@sa - @ref invalid_iterator for exceptions indicating errors with iterators
+@sa - @ref type_error for exceptions indicating executing a member function with
+                    a wrong type
+@sa - @ref other_error for exceptions indicating other library errors
+
+@since version 3.0.0
+*/
+class out_of_range : public exception
+{
+  public:
+    static out_of_range create(int id_, const std::string& what_arg)
+    {
+        std::string w = exception::name("out_of_range", id_) + what_arg;
+        return out_of_range(id_, w.c_str());
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/*!
+@brief exception indicating other library errors
+
+This exception is thrown in case of errors that cannot be classified with the
+other exception types.
+
+Exceptions have ids 5xx.
+
+name / id                      | example message | description
+------------------------------ | --------------- | -------------------------
+json.exception.other_error.501 | unsuccessful: {"op":"test","path":"/baz", "value":"bar"} | A JSON Patch operation 'test' failed. The unsuccessful operation is also printed.
+
+@sa - @ref exception for the base class of the library exceptions
+@sa - @ref parse_error for exceptions indicating a parse error
+@sa - @ref invalid_iterator for exceptions indicating errors with iterators
+@sa - @ref type_error for exceptions indicating executing a member function with
+                    a wrong type
+@sa - @ref out_of_range for exceptions indicating access out of the defined range
+
+@liveexample{The following code shows how an `other_error` exception can be
+caught.,other_error}
+
+@since version 3.0.0
+*/
+class other_error : public exception
+{
+  public:
+    static other_error create(int id_, const std::string& what_arg)
+    {
+        std::string w = exception::name("other_error", id_) + what_arg;
+        return other_error(id_, w.c_str());
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+#include <cstddef> // size_t
+#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
+
+namespace nlohmann
+{
+namespace detail
+{
+// alias templates to reduce boilerplate
+template<bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+template<typename T>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+// implementation of C++14 index_sequence and affiliates
+// source: https://stackoverflow.com/a/32223343
+template<std::size_t... Ints>
+struct index_sequence
+{
+    using type = index_sequence;
+    using value_type = std::size_t;
+    static constexpr std::size_t size() noexcept
+    {
+        return sizeof...(Ints);
+    }
+};
+
+template<class Sequence1, class Sequence2>
+struct merge_and_renumber;
+
+template<std::size_t... I1, std::size_t... I2>
+struct merge_and_renumber<index_sequence<I1...>, index_sequence<I2...>>
+        : index_sequence < I1..., (sizeof...(I1) + I2)... > {};
+
+template<std::size_t N>
+struct make_index_sequence
+    : merge_and_renumber < typename make_index_sequence < N / 2 >::type,
+      typename make_index_sequence < N - N / 2 >::type > {};
+
+template<> struct make_index_sequence<0> : index_sequence<> {};
+template<> struct make_index_sequence<1> : index_sequence<0> {};
+
+template<typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+// dispatch utility (taken from ranges-v3)
+template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<> struct priority_tag<0> {};
+
+// taken from ranges-v3
+template<typename T>
+struct static_const
+{
+    static constexpr T value{};
+};
+
+template<typename T>
+constexpr T static_const<T>::value;
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+#include <limits> // numeric_limits
+#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
+#include <utility> // declval
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+
+#include <iterator> // random_access_iterator_tag
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename ...Ts> struct make_void
+{
+    using type = void;
+};
+template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+} // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename It, typename = void>
+struct iterator_types {};
+
+template<typename It>
+struct iterator_types <
+    It,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    typename It::reference, typename It::iterator_category >>
+{
+    using difference_type = typename It::difference_type;
+    using value_type = typename It::value_type;
+    using pointer = typename It::pointer;
+    using reference = typename It::reference;
+    using iterator_category = typename It::iterator_category;
+};
+
+// This is required as some compilers implement std::iterator_traits in a way that
+// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
+template<typename T, typename = void>
+struct iterator_traits
+{
+};
+
+template<typename T>
+struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+            : iterator_types<T>
+{
+};
+
+template<typename T>
+struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
+{
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = T;
+    using difference_type = ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+};
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+
+#include <type_traits>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+
+// https://en.cppreference.com/w/cpp/experimental/is_detected
+namespace nlohmann
+{
+namespace detail
+{
+struct nonesuch
+{
+    nonesuch() = delete;
+    ~nonesuch() = delete;
+    nonesuch(nonesuch const&) = delete;
+    nonesuch(nonesuch const&&) = delete;
+    void operator=(nonesuch const&) = delete;
+    void operator=(nonesuch&&) = delete;
+};
+
+template<class Default,
+         class AlwaysVoid,
+         template<class...> class Op,
+         class... Args>
+struct detector
+{
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template<class Default, template<class...> class Op, class... Args>
+struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+{
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template<template<class...> class Op, class... Args>
+using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
+
+template<template<class...> class Op, class... Args>
+using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or = detector<Default, void, Op, Args...>;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or_t = typename detected_or<Default, Op, Args...>::type;
+
+template<class Expected, template<class...> class Op, class... Args>
+using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
+
+template<class To, template<class...> class Op, class... Args>
+using is_detected_convertible =
+    std::is_convertible<detected_t<Op, Args...>, To>;
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/json_fwd.hpp>
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+#define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+#include <cstdint> // int64_t, uint64_t
+#include <map> // map
+#include <memory> // allocator
+#include <string> // string
+#include <vector> // vector
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+namespace nlohmann
+{
+/*!
+@brief default JSONSerializer template argument
+
+This serializer ignores the template arguments and uses ADL
+([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+for serialization.
+*/
+template<typename T = void, typename SFINAE = void>
+struct adl_serializer;
+
+template<template<typename U, typename V, typename... Args> class ObjectType =
+         std::map,
+         template<typename U, typename... Args> class ArrayType = std::vector,
+         class StringType = std::string, class BooleanType = bool,
+         class NumberIntegerType = std::int64_t,
+         class NumberUnsignedType = std::uint64_t,
+         class NumberFloatType = double,
+         template<typename U> class AllocatorType = std::allocator,
+         template<typename T, typename SFINAE = void> class JSONSerializer =
+         adl_serializer,
+         class BinaryType = std::vector<std::uint8_t>>
+class basic_json;
+
+/*!
+@brief JSON Pointer
+
+A JSON pointer defines a string syntax for identifying a specific value
+within a JSON document. It can be used with functions `at` and
+`operator[]`. Furthermore, JSON pointers are the base for JSON patches.
+
+@sa [RFC 6901](https://tools.ietf.org/html/rfc6901)
+
+@since version 2.0.0
+*/
+template<typename BasicJsonType>
+class json_pointer;
+
+/*!
+@brief default JSON class
+
+This type is the default specialization of the @ref basic_json class which
+uses the standard template types.
+
+@since version 1.0.0
+*/
+using json = basic_json<>;
+
+template<class Key, class T, class IgnoredLess, class Allocator>
+struct ordered_map;
+
+/*!
+@brief ordered JSON class
+
+This type preserves the insertion order of object keys.
+
+@since version 3.9.0
+*/
+using ordered_json = basic_json<nlohmann::ordered_map>;
+
+}  // namespace nlohmann
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+
+namespace nlohmann
+{
+/*!
+@brief detail namespace with internal helper functions
+
+This namespace collects functions that should not be exposed,
+implementations of some @ref basic_json methods, and meta-programming helpers.
+
+@since version 2.1.0
+*/
+namespace detail
+{
+/////////////
+// helpers //
+/////////////
+
+// Note to maintainers:
+//
+// Every trait in this file expects a non CV-qualified type.
+// The only exceptions are in the 'aliases for detected' section
+// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
+//
+// In this case, T has to be properly CV-qualified to constraint the function arguments
+// (e.g. to_json(BasicJsonType&, const T&))
+
+template<typename> struct is_basic_json : std::false_type {};
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+
+//////////////////////
+// json_ref helpers //
+//////////////////////
+
+template<typename>
+class json_ref;
+
+template<typename>
+struct is_json_ref : std::false_type {};
+
+template<typename T>
+struct is_json_ref<json_ref<T>> : std::true_type {};
+
+//////////////////////////
+// aliases for detected //
+//////////////////////////
+
+template<typename T>
+using mapped_type_t = typename T::mapped_type;
+
+template<typename T>
+using key_type_t = typename T::key_type;
+
+template<typename T>
+using value_type_t = typename T::value_type;
+
+template<typename T>
+using difference_type_t = typename T::difference_type;
+
+template<typename T>
+using pointer_t = typename T::pointer;
+
+template<typename T>
+using reference_t = typename T::reference;
+
+template<typename T>
+using iterator_category_t = typename T::iterator_category;
+
+template<typename T>
+using iterator_t = typename T::iterator;
+
+template<typename T, typename... Args>
+using to_json_function = decltype(T::to_json(std::declval<Args>()...));
+
+template<typename T, typename... Args>
+using from_json_function = decltype(T::from_json(std::declval<Args>()...));
+
+template<typename T, typename U>
+using get_template_function = decltype(std::declval<T>().template get<U>());
+
+// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
+template<typename BasicJsonType, typename T, typename = void>
+struct has_from_json : std::false_type {};
+
+// trait checking if j.get<T> is valid
+// use this trait instead of std::is_constructible or std::is_convertible,
+// both rely on, or make use of implicit conversions, and thus fail when T
+// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
+template <typename BasicJsonType, typename T>
+struct is_getable
+{
+    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
+};
+
+template<typename BasicJsonType, typename T>
+struct has_from_json < BasicJsonType, T,
+           enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, from_json_function, serializer,
+        const BasicJsonType&, T&>::value;
+};
+
+// This trait checks if JSONSerializer<T>::from_json(json const&) exists
+// this overload is used for non-default-constructible user-defined-types
+template<typename BasicJsonType, typename T, typename = void>
+struct has_non_default_from_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<T, from_json_function, serializer,
+        const BasicJsonType&>::value;
+};
+
+// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
+// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
+template<typename BasicJsonType, typename T, typename = void>
+struct has_to_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
+        T>::value;
+};
+
+
+///////////////////
+// is_ functions //
+///////////////////
+
+template<typename T, typename = void>
+struct is_iterator_traits : std::false_type {};
+
+template<typename T>
+struct is_iterator_traits<iterator_traits<T>>
+{
+  private:
+    using traits = iterator_traits<T>;
+
+  public:
+    static constexpr auto value =
+        is_detected<value_type_t, traits>::value &&
+        is_detected<difference_type_t, traits>::value &&
+        is_detected<pointer_t, traits>::value &&
+        is_detected<iterator_category_t, traits>::value &&
+        is_detected<reference_t, traits>::value;
+};
+
+// source: https://stackoverflow.com/a/37193089/4116453
+
+template<typename T, typename = void>
+struct is_complete_type : std::false_type {};
+
+template<typename T>
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType,
+         typename = void>
+struct is_compatible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type_impl <
+    BasicJsonType, CompatibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    is_detected<key_type_t, CompatibleObjectType>::value >>
+{
+
+    using object_t = typename BasicJsonType::object_t;
+
+    // macOS's is_constructible does not play well with nonesuch...
+    static constexpr bool value =
+        std::is_constructible<typename object_t::key_type,
+        typename CompatibleObjectType::key_type>::value &&
+        std::is_constructible<typename object_t::mapped_type,
+        typename CompatibleObjectType::mapped_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type
+    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         typename = void>
+struct is_constructible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type_impl <
+    BasicJsonType, ConstructibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    is_detected<key_type_t, ConstructibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    static constexpr bool value =
+        (std::is_default_constructible<ConstructibleObjectType>::value &&
+         (std::is_move_assignable<ConstructibleObjectType>::value ||
+          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+         (std::is_constructible<typename ConstructibleObjectType::key_type,
+          typename object_t::key_type>::value &&
+          std::is_same <
+          typename object_t::mapped_type,
+          typename ConstructibleObjectType::mapped_type >::value)) ||
+        (has_from_json<BasicJsonType,
+         typename ConstructibleObjectType::mapped_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType,
+         typename ConstructibleObjectType::mapped_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type
+    : is_constructible_object_type_impl<BasicJsonType,
+      ConstructibleObjectType> {};
+
+template<typename BasicJsonType, typename CompatibleStringType,
+         typename = void>
+struct is_compatible_string_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleStringType>
+struct is_compatible_string_type_impl <
+    BasicJsonType, CompatibleStringType,
+    enable_if_t<is_detected_exact<typename BasicJsonType::string_t::value_type,
+    value_type_t, CompatibleStringType>::value >>
+{
+    static constexpr auto value =
+        std::is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_compatible_string_type
+    : is_compatible_string_type_impl<BasicJsonType, ConstructibleStringType> {};
+
+template<typename BasicJsonType, typename ConstructibleStringType,
+         typename = void>
+struct is_constructible_string_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type_impl <
+    BasicJsonType, ConstructibleStringType,
+    enable_if_t<is_detected_exact<typename BasicJsonType::string_t::value_type,
+    value_type_t, ConstructibleStringType>::value >>
+{
+    static constexpr auto value =
+        std::is_constructible<ConstructibleStringType,
+        typename BasicJsonType::string_t>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type
+    : is_constructible_string_type_impl<BasicJsonType, ConstructibleStringType> {};
+
+template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
+struct is_compatible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type_impl <
+    BasicJsonType, CompatibleArrayType,
+    enable_if_t < is_detected<value_type_t, CompatibleArrayType>::value&&
+    is_detected<iterator_t, CompatibleArrayType>::value&&
+// This is needed because json_reverse_iterator has a ::iterator type...
+// Therefore it is detected as a CompatibleArrayType.
+// The real fix would be to have an Iterable concept.
+    !is_iterator_traits <
+    iterator_traits<CompatibleArrayType >>::value >>
+{
+    static constexpr bool value =
+        std::is_constructible<BasicJsonType,
+        typename CompatibleArrayType::value_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type
+    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
+struct is_constructible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t<std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value >>
+            : std::true_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t < !std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value&&
+    std::is_default_constructible<ConstructibleArrayType>::value&&
+(std::is_move_assignable<ConstructibleArrayType>::value ||
+ std::is_copy_assignable<ConstructibleArrayType>::value)&&
+is_detected<value_type_t, ConstructibleArrayType>::value&&
+is_detected<iterator_t, ConstructibleArrayType>::value&&
+is_complete_type <
+detected_t<value_type_t, ConstructibleArrayType >>::value >>
+{
+    static constexpr bool value =
+        // This is needed because json_reverse_iterator has a ::iterator type,
+        // furthermore, std::back_insert_iterator (and other iterators) have a
+        // base class `iterator`... Therefore it is detected as a
+        // ConstructibleArrayType. The real fix would be to have an Iterable
+        // concept.
+        !is_iterator_traits<iterator_traits<ConstructibleArrayType>>::value &&
+
+        (std::is_same<typename ConstructibleArrayType::value_type,
+         typename BasicJsonType::array_t::value_type>::value ||
+         has_from_json<BasicJsonType,
+         typename ConstructibleArrayType::value_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType, typename ConstructibleArrayType::value_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type
+    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+         typename = void>
+struct is_compatible_integer_type_impl : std::false_type {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type_impl <
+    RealIntegerType, CompatibleNumberIntegerType,
+    enable_if_t < std::is_integral<RealIntegerType>::value&&
+    std::is_integral<CompatibleNumberIntegerType>::value&&
+    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
+{
+    // is there an assert somewhere on overflows?
+    using RealLimits = std::numeric_limits<RealIntegerType>;
+    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
+
+    static constexpr auto value =
+        std::is_constructible<RealIntegerType,
+        CompatibleNumberIntegerType>::value &&
+        CompatibleLimits::is_integer &&
+        RealLimits::is_signed == CompatibleLimits::is_signed;
+};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type
+    : is_compatible_integer_type_impl<RealIntegerType,
+      CompatibleNumberIntegerType> {};
+
+template<typename BasicJsonType, typename CompatibleType, typename = void>
+struct is_compatible_type_impl: std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type_impl <
+    BasicJsonType, CompatibleType,
+    enable_if_t<is_complete_type<CompatibleType>::value >>
+{
+    static constexpr bool value =
+        has_to_json<BasicJsonType, CompatibleType>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type
+    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+
+// https://en.cppreference.com/w/cpp/types/conjunction
+template<class...> struct conjunction : std::true_type { };
+template<class B1> struct conjunction<B1> : B1 { };
+template<class B1, class... Bn>
+struct conjunction<B1, Bn...>
+: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
+
+template<typename T1, typename T2>
+struct is_constructible_tuple : std::false_type {};
+
+template<typename T1, typename... Args>
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<std::is_constructible<T1, Args>...> {};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t
+#include <string> // string
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////////////
+// JSON type enumeration //
+///////////////////////////
+
+/*!
+@brief the JSON type enumeration
+
+This enumeration collects the different JSON types. It is internally used to
+distinguish the stored values, and the functions @ref basic_json::is_null(),
+@ref basic_json::is_object(), @ref basic_json::is_array(),
+@ref basic_json::is_string(), @ref basic_json::is_boolean(),
+@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
+@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
+@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
+@ref basic_json::is_structured() rely on it.
+
+@note There are three enumeration entries (number_integer, number_unsigned, and
+number_float), because the library distinguishes these three types for numbers:
+@ref basic_json::number_unsigned_t is used for unsigned integers,
+@ref basic_json::number_integer_t is used for signed integers, and
+@ref basic_json::number_float_t is used for floating-point numbers or to
+approximate integers which do not fit in the limits of their respective type.
+
+@sa @ref basic_json::basic_json(const value_t value_type) -- create a JSON
+value with the default value for a given type
+
+@since version 1.0.0
+*/
+enum class value_t : std::uint8_t
+{
+    null,             ///< null value
+    object,           ///< object (unordered set of name/value pairs)
+    array,            ///< array (ordered collection of values)
+    string,           ///< string value
+    boolean,          ///< boolean value
+    number_integer,   ///< number value (signed integer)
+    number_unsigned,  ///< number value (unsigned integer)
+    number_float,     ///< number value (floating-point)
+    binary,           ///< binary array (ordered collection of bytes)
+    discarded         ///< discarded by the parser callback function
+};
+
+/*!
+@brief comparison operator for JSON types
+
+Returns an ordering that is similar to Python:
+- order: null < boolean < number < object < array < string < binary
+- furthermore, each type is not smaller than itself
+- discarded values are not comparable
+- binary is represented as a b"" string in python and directly comparable to a
+  string; however, making a binary array directly comparable with a string would
+  be surprising behavior in a JSON file.
+
+@since version 1.0.0
+*/
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+{
+    static constexpr std::array<std::uint8_t, 9> order = {{
+            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+            6 /* binary */
+        }
+    };
+
+    const auto l_index = static_cast<std::size_t>(lhs);
+    const auto r_index = static_cast<std::size_t>(rhs);
+    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
+}
+}  // namespace detail
+}  // namespace nlohmann
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
+    {
+        JSON_THROW(type_error::create(302, "type must be null, but is " + std::string(j.type_name())));
+    }
+    n = nullptr;
+}
+
+// overloads for basic_json template parameters
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+                         int > = 0 >
+void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+
+        default:
+            JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name())));
+    }
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
+    {
+        JSON_THROW(type_error::create(302, "type must be boolean, but is " + std::string(j.type_name())));
+    }
+    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name())));
+    }
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template <
+    typename BasicJsonType, typename ConstructibleStringType,
+    enable_if_t <
+        is_constructible_string_type<BasicJsonType, ConstructibleStringType>::value&&
+        !std::is_same<typename BasicJsonType::string_t,
+                      ConstructibleStringType>::value,
+        int > = 0 >
+void from_json(const BasicJsonType& j, ConstructibleStringType& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name())));
+    }
+
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+void from_json(const BasicJsonType& j, EnumType& e)
+{
+    typename std::underlying_type<EnumType>::type val;
+    get_arithmetic_value(j, val);
+    e = static_cast<EnumType>(val);
+}
+
+// forward_list doesn't have an insert method
+template<typename BasicJsonType, typename T, typename Allocator,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name())));
+    }
+    l.clear();
+    std::transform(j.rbegin(), j.rend(),
+                   std::front_inserter(l), [](const BasicJsonType & i)
+    {
+        return i.template get<T>();
+    });
+}
+
+// valarray doesn't have an insert method
+template<typename BasicJsonType, typename T,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+void from_json(const BasicJsonType& j, std::valarray<T>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name())));
+    }
+    l.resize(j.size());
+    std::transform(j.begin(), j.end(), std::begin(l),
+                   [](const BasicJsonType & elem)
+    {
+        return elem.template get<T>();
+    });
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json(const BasicJsonType& j, T (&arr)[N])
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType>
+void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
+{
+    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+                          priority_tag<2> /*unused*/)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
+-> decltype(
+    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
+    j.template get<typename ConstructibleArrayType::value_type>(),
+    void())
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    ret.reserve(j.size());
+    std::transform(j.begin(), j.end(),
+                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
+                          priority_tag<0> /*unused*/)
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    std::transform(
+        j.begin(), j.end(), std::inserter(ret, end(ret)),
+        [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template < typename BasicJsonType, typename ConstructibleArrayType,
+           enable_if_t <
+               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+               !is_basic_json<ConstructibleArrayType>::value,
+               int > = 0 >
+auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
+-> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+j.template get<typename ConstructibleArrayType::value_type>(),
+void())
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " +
+                                      std::string(j.type_name())));
+    }
+
+    from_json_array_impl(j, arr, priority_tag<3> {});
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
+    {
+        JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(j.type_name())));
+    }
+
+    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
+}
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
+void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+    {
+        JSON_THROW(type_error::create(302, "type must be object, but is " + std::string(j.type_name())));
+    }
+
+    ConstructibleObjectType ret;
+    auto inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
+    using value_type = typename ConstructibleObjectType::value_type;
+    std::transform(
+        inner_object->begin(), inner_object->end(),
+        std::inserter(ret, ret.begin()),
+        [](typename BasicJsonType::object_t::value_type const & p)
+    {
+        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
+    });
+    obj = std::move(ret);
+}
+
+// overload for arithmetic types, not chosen for basic_json template arguments
+// (BooleanType, etc..); note: Is it really necessary to provide explicit
+// overloads for boolean_t etc. in case of a custom BooleanType which is not
+// an arithmetic type?
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t <
+               std::is_arithmetic<ArithmeticType>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+               int > = 0 >
+void from_json(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+        case value_t::boolean:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
+            break;
+        }
+
+        default:
+            JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name())));
+    }
+}
+
+template<typename BasicJsonType, typename A1, typename A2>
+void from_json(const BasicJsonType& j, std::pair<A1, A2>& p)
+{
+    p = {j.at(0).template get<A1>(), j.at(1).template get<A2>()};
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+void from_json_tuple_impl(const BasicJsonType& j, Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    t = std::make_tuple(j.at(Idx).template get<typename std::tuple_element<Idx, Tuple>::type>()...);
+}
+
+template<typename BasicJsonType, typename... Args>
+void from_json(const BasicJsonType& j, std::tuple<Args...>& t)
+{
+    from_json_tuple_impl(j, t, index_sequence_for<Args...> {});
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name())));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(p.type_name())));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name())));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(p.type_name())));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+struct from_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(const BasicJsonType& j, T& val) const
+    noexcept(noexcept(from_json(j, val)))
+    -> decltype(from_json(j, val), void())
+    {
+        return from_json(j, val);
+    }
+};
+}  // namespace detail
+
+/// namespace to hold default `from_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace
+{
+constexpr const auto& from_json = detail::static_const<detail::from_json_fn>::value;
+} // namespace
+} // namespace nlohmann
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+
+#include <algorithm> // copy
+#include <iterator> // begin, end
+#include <string> // string
+#include <tuple> // tuple, get
+#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
+#include <utility> // move, forward, declval, pair
+#include <valarray> // valarray
+#include <vector> // vector
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+
+#include <cstddef> // size_t
+#include <iterator> // input_iterator_tag
+#include <string> // string, to_string
+#include <tuple> // tuple_size, get, tuple_element
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename string_type>
+void int_to_string( string_type& target, std::size_t value )
+{
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
+}
+template<typename IteratorType> class iteration_proxy_value
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    using value_type = iteration_proxy_value;
+    using pointer = value_type * ;
+    using reference = value_type & ;
+    using iterator_category = std::input_iterator_tag;
+    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+
+  private:
+    /// the iterator
+    IteratorType anchor;
+    /// an index for arrays (used to create key names)
+    std::size_t array_index = 0;
+    /// last stringified array index
+    mutable std::size_t array_index_last = 0;
+    /// a string representation of the array index
+    mutable string_type array_index_str = "0";
+    /// an empty string (to return a reference for primitive values)
+    const string_type empty_str = "";
+
+  public:
+    explicit iteration_proxy_value(IteratorType it) noexcept : anchor(it) {}
+
+    /// dereference operator (needed for range-based for)
+    iteration_proxy_value& operator*()
+    {
+        return *this;
+    }
+
+    /// increment operator (needed for range-based for)
+    iteration_proxy_value& operator++()
+    {
+        ++anchor;
+        ++array_index;
+
+        return *this;
+    }
+
+    /// equality operator (needed for InputIterator)
+    bool operator==(const iteration_proxy_value& o) const
+    {
+        return anchor == o.anchor;
+    }
+
+    /// inequality operator (needed for range-based for)
+    bool operator!=(const iteration_proxy_value& o) const
+    {
+        return anchor != o.anchor;
+    }
+
+    /// return key of the iterator
+    const string_type& key() const
+    {
+        JSON_ASSERT(anchor.m_object != nullptr);
+
+        switch (anchor.m_object->type())
+        {
+            // use integer array index as key
+            case value_t::array:
+            {
+                if (array_index != array_index_last)
+                {
+                    int_to_string( array_index_str, array_index );
+                    array_index_last = array_index;
+                }
+                return array_index_str;
+            }
+
+            // use key from the object
+            case value_t::object:
+                return anchor.key();
+
+            // use an empty key for all primitive types
+            default:
+                return empty_str;
+        }
+    }
+
+    /// return value of the iterator
+    typename IteratorType::reference value() const
+    {
+        return anchor.value();
+    }
+};
+
+/// proxy class for the items() function
+template<typename IteratorType> class iteration_proxy
+{
+  private:
+    /// the container to iterate
+    typename IteratorType::reference container;
+
+  public:
+    /// construct iteration proxy from a container
+    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
+        : container(cont) {}
+
+    /// return iterator begin (needed for range-based for)
+    iteration_proxy_value<IteratorType> begin() noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container.begin());
+    }
+
+    /// return iterator end (needed for range-based for)
+    iteration_proxy_value<IteratorType> end() noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container.end());
+    }
+};
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
+{
+    return i.key();
+}
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
+{
+    return i.value();
+}
+}  // namespace detail
+}  // namespace nlohmann
+
+// The Addition to the STD Namespace is required to add
+// Structured Bindings Support to the iteration_proxy_value class
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+namespace std
+{
+#if defined(__clang__)
+    // Fix: https://github.com/nlohmann/json/issues/1401
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+template<typename IteratorType>
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>>
+            : public std::integral_constant<std::size_t, 2> {};
+
+template<std::size_t N, typename IteratorType>
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >>
+{
+  public:
+    using type = decltype(
+                     get<N>(std::declval <
+                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
+};
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+} // namespace std
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+//////////////////
+// constructors //
+//////////////////
+
+template<value_t> struct external_constructor;
+
+template<>
+struct external_constructor<value_t::boolean>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
+    {
+        j.m_type = value_t::boolean;
+        j.m_value = b;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::string>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
+    {
+        j.m_type = value_t::string;
+        j.m_value = s;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+    {
+        j.m_type = value_t::string;
+        j.m_value = std::move(s);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleStringType,
+               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_type = value_t::string;
+        j.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::binary>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
+    {
+        j.m_type = value_t::binary;
+        typename BasicJsonType::binary_t value{b};
+        j.m_value = value;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
+    {
+        j.m_type = value_t::binary;
+        typename BasicJsonType::binary_t value{std::move(b)};
+        j.m_value = value;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_float>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
+    {
+        j.m_type = value_t::number_float;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_unsigned>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
+    {
+        j.m_type = value_t::number_unsigned;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_integer>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
+    {
+        j.m_type = value_t::number_integer;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::array>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
+    {
+        j.m_type = value_t::array;
+        j.m_value = arr;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+    {
+        j.m_type = value_t::array;
+        j.m_value = std::move(arr);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleArrayType,
+               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
+    {
+        using std::begin;
+        using std::end;
+        j.m_type = value_t::array;
+        j.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
+    {
+        j.m_type = value_t::array;
+        j.m_value = value_t::array;
+        j.m_value.array->reserve(arr.size());
+        for (const bool x : arr)
+        {
+            j.m_value.array->push_back(x);
+        }
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType, typename T,
+             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
+    {
+        j.m_type = value_t::array;
+        j.m_value = value_t::array;
+        j.m_value.array->resize(arr.size());
+        if (arr.size() > 0)
+        {
+            std::copy(std::begin(arr), std::end(arr), j.m_value.array->begin());
+        }
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::object>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
+    {
+        j.m_type = value_t::object;
+        j.m_value = obj;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+    {
+        j.m_type = value_t::object;
+        j.m_value = std::move(obj);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleObjectType,
+               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_type = value_t::object;
+        j.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
+        j.assert_invariant();
+    }
+};
+
+/////////////
+// to_json //
+/////////////
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
+void to_json(BasicJsonType& j, T b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, b);
+}
+
+template<typename BasicJsonType, typename CompatibleString,
+         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
+void to_json(BasicJsonType& j, const CompatibleString& s)
+{
+    external_constructor<value_t::string>::construct(j, s);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+{
+    external_constructor<value_t::string>::construct(j, std::move(s));
+}
+
+template<typename BasicJsonType, typename FloatType,
+         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
+void to_json(BasicJsonType& j, FloatType val) noexcept
+{
+    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
+void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
+{
+    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
+void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
+{
+    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
+}
+
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+void to_json(BasicJsonType& j, EnumType e) noexcept
+{
+    using underlying_type = typename std::underlying_type<EnumType>::type;
+    external_constructor<value_t::number_integer>::construct(j, static_cast<underlying_type>(e));
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, const std::vector<bool>& e)
+{
+    external_constructor<value_t::array>::construct(j, e);
+}
+
+template < typename BasicJsonType, typename CompatibleArrayType,
+           enable_if_t < is_compatible_array_type<BasicJsonType,
+                         CompatibleArrayType>::value&&
+                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                         !is_basic_json<CompatibleArrayType>::value,
+                         int > = 0 >
+void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
+{
+    external_constructor<value_t::binary>::construct(j, bin);
+}
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+void to_json(BasicJsonType& j, const std::valarray<T>& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template < typename BasicJsonType, typename CompatibleObjectType,
+           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
+{
+    external_constructor<value_t::object>::construct(j, obj);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+{
+    external_constructor<value_t::object>::construct(j, std::move(obj));
+}
+
+template <
+    typename BasicJsonType, typename T, std::size_t N,
+    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+                  const T(&)[N]>::value,
+                  int > = 0 >
+void to_json(BasicJsonType& j, const T(&arr)[N])
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
+{
+    j = { p.first, p.second };
+}
+
+// for https://github.com/nlohmann/json/pull/1134
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
+void to_json(BasicJsonType& j, const T& b)
+{
+    j = { {b.key(), b.value()} };
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    j = { std::get<Idx>(t)... };
+}
+
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+void to_json(BasicJsonType& j, const T& t)
+{
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+}
+
+struct to_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    -> decltype(to_json(j, std::forward<T>(val)), void())
+    {
+        return to_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+/// namespace to hold default `to_json` function
+namespace
+{
+constexpr const auto& to_json = detail::static_const<detail::to_json_fn>::value;
+} // namespace
+} // namespace nlohmann
+
+
+namespace nlohmann
+{
+
+template<typename, typename>
+struct adl_serializer
+{
+    /*!
+    @brief convert a JSON value to any value type
+
+    This function is usually called by the `get()` function of the
+    @ref basic_json class (either explicit or via conversion operators).
+
+    @param[in] j        JSON value to read from
+    @param[in,out] val  value to write to
+    */
+    template<typename BasicJsonType, typename ValueType>
+    static auto from_json(BasicJsonType&& j, ValueType& val) noexcept(
+        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+    {
+        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
+    }
+
+    /*!
+    @brief convert any value type to a JSON value
+
+    This function is usually called by the constructors of the @ref basic_json
+    class.
+
+    @param[in,out] j  JSON value to write to
+    @param[in] val    value to read from
+    */
+    template<typename BasicJsonType, typename ValueType>
+    static auto to_json(BasicJsonType& j, ValueType&& val) noexcept(
+        noexcept(::nlohmann::to_json(j, std::forward<ValueType>(val))))
+    -> decltype(::nlohmann::to_json(j, std::forward<ValueType>(val)), void())
+    {
+        ::nlohmann::to_json(j, std::forward<ValueType>(val));
+    }
+};
+
+}  // namespace nlohmann
+
+// #include <nlohmann/byte_container_with_subtype.hpp>
+
+
+#include <cstdint> // uint8_t
+#include <tuple> // tie
+#include <utility> // move
+
+namespace nlohmann
+{
+
+/*!
+@brief an internal type for a backed binary type
+
+This type extends the template parameter @a BinaryType provided to `basic_json`
+with a subtype used by BSON and MessagePack. This type exists so that the user
+does not have to specify a type themselves with a specific naming scheme in
+order to override the binary type.
+
+@tparam BinaryType container to store bytes (`std::vector<std::uint8_t>` by
+                   default)
+
+@since version 3.8.0
+*/
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType
+{
+  public:
+    /// the type of the underlying container
+    using container_type = BinaryType;
+
+    byte_container_with_subtype() noexcept(noexcept(container_type()))
+        : container_type()
+    {}
+
+    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+    {}
+
+    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+    {}
+
+    byte_container_with_subtype(const container_type& b, std::uint8_t subtype) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+        , m_subtype(subtype)
+        , m_has_subtype(true)
+    {}
+
+    byte_container_with_subtype(container_type&& b, std::uint8_t subtype) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+        , m_subtype(subtype)
+        , m_has_subtype(true)
+    {}
+
+    bool operator==(const byte_container_with_subtype& rhs) const
+    {
+        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
+               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
+    }
+
+    bool operator!=(const byte_container_with_subtype& rhs) const
+    {
+        return !(rhs == *this);
+    }
+
+    /*!
+    @brief sets the binary subtype
+
+    Sets the binary subtype of the value, also flags a binary JSON value as
+    having a subtype, which has implications for serialization.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @sa @ref subtype() -- return the binary subtype
+    @sa @ref clear_subtype() -- clears the binary subtype
+    @sa @ref has_subtype() -- returns whether or not the binary value has a
+    subtype
+
+    @since version 3.8.0
+    */
+    void set_subtype(std::uint8_t subtype) noexcept
+    {
+        m_subtype = subtype;
+        m_has_subtype = true;
+    }
+
+    /*!
+    @brief return the binary subtype
+
+    Returns the numerical subtype of the value if it has a subtype. If it does
+    not have a subtype, this function will return size_t(-1) as a sentinel
+    value.
+
+    @return the numerical subtype of the binary value
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @sa @ref set_subtype() -- sets the binary subtype
+    @sa @ref clear_subtype() -- clears the binary subtype
+    @sa @ref has_subtype() -- returns whether or not the binary value has a
+    subtype
+
+    @since version 3.8.0
+    */
+    constexpr std::uint8_t subtype() const noexcept
+    {
+        return m_subtype;
+    }
+
+    /*!
+    @brief return whether the value has a subtype
+
+    @return whether the value has a subtype
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @sa @ref subtype() -- return the binary subtype
+    @sa @ref set_subtype() -- sets the binary subtype
+    @sa @ref clear_subtype() -- clears the binary subtype
+
+    @since version 3.8.0
+    */
+    constexpr bool has_subtype() const noexcept
+    {
+        return m_has_subtype;
+    }
+
+    /*!
+    @brief clears the binary subtype
+
+    Clears the binary subtype and flags the value as not having a subtype, which
+    has implications for serialization; for instance MessagePack will prefer the
+    bin family over the ext family.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @sa @ref subtype() -- return the binary subtype
+    @sa @ref set_subtype() -- sets the binary subtype
+    @sa @ref has_subtype() -- returns whether or not the binary value has a
+    subtype
+
+    @since version 3.8.0
+    */
+    void clear_subtype() noexcept
+    {
+        m_subtype = 0;
+        m_has_subtype = false;
+    }
+
+  private:
+    std::uint8_t m_subtype = 0;
+    bool m_has_subtype = false;
+};
+
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/hash.hpp>
+
+
+#include <cstddef> // size_t, uint8_t
+#include <functional> // hash
+
+namespace nlohmann
+{
+namespace detail
+{
+
+// boost::hash_combine
+inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
+{
+    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
+    return seed;
+}
+
+/*!
+@brief hash a JSON value
+
+The hash function tries to rely on std::hash where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for
+null, 0, 0U, and false, etc.
+
+@tparam BasicJsonType basic_json specialization
+@param j JSON value to hash
+@return hash value of j
+*/
+template<typename BasicJsonType>
+std::size_t hash(const BasicJsonType& j)
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+    const auto type = static_cast<std::size_t>(j.type());
+    switch (j.type())
+    {
+        case BasicJsonType::value_t::null:
+        case BasicJsonType::value_t::discarded:
+        {
+            return combine(type, 0);
+        }
+
+        case BasicJsonType::value_t::object:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j.items())
+            {
+                const auto h = std::hash<string_t> {}(element.key());
+                seed = combine(seed, h);
+                seed = combine(seed, hash(element.value()));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::array:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j)
+            {
+                seed = combine(seed, hash(element));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::string:
+        {
+            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::boolean:
+        {
+            const auto h = std::hash<bool> {}(j.template get<bool>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_integer:
+        {
+            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            return combine(type, h);
+        }
+
+        case nlohmann::detail::value_t::number_unsigned:
+        {
+            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            return combine(type, h);
+        }
+
+        case nlohmann::detail::value_t::number_float:
+        {
+            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            return combine(type, h);
+        }
+
+        case nlohmann::detail::value_t::binary:
+        {
+            auto seed = combine(type, j.get_binary().size());
+            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            seed = combine(seed, h);
+            seed = combine(seed, j.get_binary().subtype());
+            for (const auto byte : j.get_binary())
+            {
+                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+            }
+            return seed;
+        }
+
+        default: // LCOV_EXCL_LINE
+            JSON_ASSERT(false); // LCOV_EXCL_LINE
+    }
+}
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+
+#include <algorithm> // generate_n
+#include <array> // array
+#include <cmath> // ldexp
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstdio> // snprintf
+#include <cstring> // memcpy
+#include <iterator> // back_inserter
+#include <limits> // numeric_limits
+#include <string> // char_traits, string
+#include <utility> // make_pair, move
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdio> //FILE *
+#include <cstring> // strlen
+#include <istream> // istream
+#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
+#include <memory> // shared_ptr, make_shared, addressof
+#include <numeric> // accumulate
+#include <string> // string, char_traits
+#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
+#include <utility> // pair, declval
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/// the supported input formats
+enum class input_format_t { json, cbor, msgpack, ubjson, bson };
+
+////////////////////
+// input adapters //
+////////////////////
+
+/*!
+Input adapter for stdio file access. This adapter read only 1 byte and do not use any
+ buffer. This adapter is a very low level adapter.
+*/
+class file_input_adapter
+{
+  public:
+    using char_type = char;
+
+    JSON_HEDLEY_NON_NULL(2)
+    explicit file_input_adapter(std::FILE* f) noexcept
+        : m_file(f)
+    {}
+
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) = delete;
+
+    std::char_traits<char>::int_type get_character() noexcept
+    {
+        return std::fgetc(m_file);
+    }
+
+  private:
+    /// the file pointer to read from
+    std::FILE* m_file;
+};
+
+
+/*!
+Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
+beginning of input. Does not support changing the underlying std::streambuf
+in mid-input. Maintains underlying std::istream and std::streambuf to support
+subsequent use of standard std::istream operations to process any input
+characters following those used in parsing the JSON input.  Clears the
+std::istream flags; any input errors (e.g., EOF) will be detected by the first
+subsequent call for input from the std::istream.
+*/
+class input_stream_adapter
+{
+  public:
+    using char_type = char;
+
+    ~input_stream_adapter()
+    {
+        // clear stream flags; we use underlying streambuf I/O, do not
+        // maintain ifstream flags, except eof
+        if (is != nullptr)
+        {
+            is->clear(is->rdstate() & std::ios::eofbit);
+        }
+    }
+
+    explicit input_stream_adapter(std::istream& i)
+        : is(&i), sb(i.rdbuf())
+    {}
+
+    // delete because of pointer members
+    input_stream_adapter(const input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&& rhs) = delete;
+
+    input_stream_adapter(input_stream_adapter&& rhs) noexcept : is(rhs.is), sb(rhs.sb)
+    {
+        rhs.is = nullptr;
+        rhs.sb = nullptr;
+    }
+
+    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
+    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
+    // end up as the same value, eg. 0xFFFFFFFF.
+    std::char_traits<char>::int_type get_character()
+    {
+        auto res = sb->sbumpc();
+        // set eof manually, as we don't use the istream interface.
+        if (JSON_HEDLEY_UNLIKELY(res == EOF))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+  private:
+    /// the associated input stream
+    std::istream* is = nullptr;
+    std::streambuf* sb = nullptr;
+};
+
+// General-purpose iterator-based adapter. It might not be as fast as
+// theoretically possible for some containers, but it is extremely versatile.
+template<typename IteratorType>
+class iterator_input_adapter
+{
+  public:
+    using char_type = typename std::iterator_traits<IteratorType>::value_type;
+
+    iterator_input_adapter(IteratorType first, IteratorType last)
+        : current(std::move(first)), end(std::move(last)) {}
+
+    typename std::char_traits<char_type>::int_type get_character()
+    {
+        if (JSON_HEDLEY_LIKELY(current != end))
+        {
+            auto result = std::char_traits<char_type>::to_int_type(*current);
+            std::advance(current, 1);
+            return result;
+        }
+        else
+        {
+            return std::char_traits<char_type>::eof();
+        }
+    }
+
+  private:
+    IteratorType current;
+    IteratorType end;
+
+    template<typename BaseInputAdapter, size_t T>
+    friend struct wide_string_input_helper;
+
+    bool empty() const
+    {
+        return current == end;
+    }
+
+};
+
+
+template<typename BaseInputAdapter, size_t T>
+struct wide_string_input_helper;
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 4>
+{
+    // UTF-32
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-32 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (wc <= 0xFFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else if (wc <= 0x10FFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 4;
+            }
+            else
+            {
+                // unknown character
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+        }
+    }
+};
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 2>
+{
+    // UTF-16
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-16 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (0xD800 > wc || wc >= 0xE000)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else
+            {
+                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
+                {
+                    const auto wc2 = static_cast<unsigned int>(input.get_character());
+                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
+                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
+                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
+                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
+                    utf8_bytes_filled = 4;
+                }
+                else
+                {
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                    utf8_bytes_filled = 1;
+                }
+            }
+        }
+    }
+};
+
+// Wraps another input apdater to convert wide character types into individual bytes.
+template<typename BaseInputAdapter, typename WideCharType>
+class wide_string_input_adapter
+{
+  public:
+    using char_type = char;
+
+    wide_string_input_adapter(BaseInputAdapter base)
+        : base_adapter(base) {}
+
+    typename std::char_traits<char>::int_type get_character() noexcept
+    {
+        // check if buffer needs to be filled
+        if (utf8_bytes_index == utf8_bytes_filled)
+        {
+            fill_buffer<sizeof(WideCharType)>();
+
+            JSON_ASSERT(utf8_bytes_filled > 0);
+            JSON_ASSERT(utf8_bytes_index == 0);
+        }
+
+        // use buffer
+        JSON_ASSERT(utf8_bytes_filled > 0);
+        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
+        return utf8_bytes[utf8_bytes_index++];
+    }
+
+  private:
+    BaseInputAdapter base_adapter;
+
+    template<size_t T>
+    void fill_buffer()
+    {
+        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
+    }
+
+    /// a buffer for UTF-8 bytes
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+
+    /// index to the utf8_codes array for the next valid byte
+    std::size_t utf8_bytes_index = 0;
+    /// number of valid bytes in the utf8_codes array
+    std::size_t utf8_bytes_filled = 0;
+};
+
+
+template<typename IteratorType, typename Enable = void>
+struct iterator_input_adapter_factory
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using adapter_type = iterator_input_adapter<iterator_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(std::move(first), std::move(last));
+    }
+};
+
+template<typename T>
+struct is_iterator_of_multibyte
+{
+    using value_type = typename std::iterator_traits<T>::value_type;
+    enum
+    {
+        value = sizeof(value_type) > 1
+    };
+};
+
+template<typename IteratorType>
+struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using base_adapter_type = iterator_input_adapter<iterator_type>;
+    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
+    }
+};
+
+// General purpose iterator-based input
+template<typename IteratorType>
+typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
+{
+    using factory_type = iterator_input_adapter_factory<IteratorType>;
+    return factory_type::create(first, last);
+}
+
+// Convenience shorthand from container to iterator
+template<typename ContainerType>
+auto input_adapter(const ContainerType& container) -> decltype(input_adapter(begin(container), end(container)))
+{
+    // Enable ADL
+    using std::begin;
+    using std::end;
+
+    return input_adapter(begin(container), end(container));
+}
+
+// Special cases with fast paths
+inline file_input_adapter input_adapter(std::FILE* file)
+{
+    return file_input_adapter(file);
+}
+
+inline input_stream_adapter input_adapter(std::istream& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+inline input_stream_adapter input_adapter(std::istream&& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
+
+// Null-delimited strings, and the like.
+template < typename CharT,
+           typename std::enable_if <
+               std::is_pointer<CharT>::value&&
+               !std::is_array<CharT>::value&&
+               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+               sizeof(typename std::remove_pointer<CharT>::type) == 1,
+               int >::type = 0 >
+contiguous_bytes_input_adapter input_adapter(CharT b)
+{
+    auto length = std::strlen(reinterpret_cast<const char*>(b));
+    const auto* ptr = reinterpret_cast<const char*>(b);
+    return input_adapter(ptr, ptr + length);
+}
+
+template<typename T, std::size_t N>
+auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N))
+{
+    return input_adapter(array, array + N);
+}
+
+// This class only handles inputs of input_buffer_adapter type.
+// It's required so that expressions like {ptr, len} can be implicitely casted
+// to the correct adapter.
+class span_input_adapter
+{
+  public:
+    template < typename CharT,
+               typename std::enable_if <
+                   std::is_pointer<CharT>::value&&
+                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
+                   int >::type = 0 >
+    span_input_adapter(CharT b, std::size_t l)
+        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
+
+    template<class IteratorType,
+             typename std::enable_if<
+                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
+                 int>::type = 0>
+    span_input_adapter(IteratorType first, IteratorType last)
+        : ia(input_adapter(first, last)) {}
+
+    contiguous_bytes_input_adapter&& get()
+    {
+        return std::move(ia);
+    }
+
+  private:
+    contiguous_bytes_input_adapter ia;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+
+#include <cstddef>
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+
+/*!
+@brief SAX interface
+
+This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
+Each function is called in different situations while the input is parsed. The
+boolean return value informs the parser whether to continue processing the
+input.
+*/
+template<typename BasicJsonType>
+struct json_sax
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @brief a null value was read
+    @return whether parsing should proceed
+    */
+    virtual bool null() = 0;
+
+    /*!
+    @brief a boolean value was read
+    @param[in] val  boolean value
+    @return whether parsing should proceed
+    */
+    virtual bool boolean(bool val) = 0;
+
+    /*!
+    @brief an integer number was read
+    @param[in] val  integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_integer(number_integer_t val) = 0;
+
+    /*!
+    @brief an unsigned integer number was read
+    @param[in] val  unsigned integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_unsigned(number_unsigned_t val) = 0;
+
+    /*!
+    @brief an floating-point number was read
+    @param[in] val  floating-point value
+    @param[in] s    raw token value
+    @return whether parsing should proceed
+    */
+    virtual bool number_float(number_float_t val, const string_t& s) = 0;
+
+    /*!
+    @brief a string was read
+    @param[in] val  string value
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool string(string_t& val) = 0;
+
+    /*!
+    @brief a binary string was read
+    @param[in] val  binary value
+    @return whether parsing should proceed
+    @note It is safe to move the passed binary.
+    */
+    virtual bool binary(binary_t& val) = 0;
+
+    /*!
+    @brief the beginning of an object was read
+    @param[in] elements  number of object elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_object(std::size_t elements) = 0;
+
+    /*!
+    @brief an object key was read
+    @param[in] val  object key
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool key(string_t& val) = 0;
+
+    /*!
+    @brief the end of an object was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_object() = 0;
+
+    /*!
+    @brief the beginning of an array was read
+    @param[in] elements  number of array elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_array(std::size_t elements) = 0;
+
+    /*!
+    @brief the end of an array was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_array() = 0;
+
+    /*!
+    @brief a parse error occurred
+    @param[in] position    the position in the input where the error occurs
+    @param[in] last_token  the last read token
+    @param[in] ex          an exception object describing the error
+    @return whether parsing should proceed (must return false)
+    */
+    virtual bool parse_error(std::size_t position,
+                             const std::string& last_token,
+                             const detail::exception& ex) = 0;
+
+    virtual ~json_sax() = default;
+};
+
+
+namespace detail
+{
+/*!
+@brief SAX implementation to create a JSON value from SAX events
+
+This class implements the @ref json_sax interface and processes the SAX events
+to create a JSON value which makes it basically a DOM parser. The structure or
+hierarchy of the JSON value is managed by the stack `ref_stack` which contains
+a pointer to the respective array or object for each recursion depth.
+
+After successful parsing, the value that is passed by reference to the
+constructor contains the parsed value.
+
+@tparam BasicJsonType  the JSON type
+*/
+template<typename BasicJsonType>
+class json_sax_dom_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @param[in, out] r  reference to a JSON value that is manipulated while
+                       parsing
+    @param[in] allow_exceptions_  whether parse errors yield exceptions
+    */
+    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true)
+        : root(r), allow_exceptions(allow_exceptions_)
+    {}
+
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) = default;
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default;
+    ~json_sax_dom_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
+
+        if (JSON_HEDLEY_UNLIKELY(len != std::size_t(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408,
+                                            "excessive object size: " + std::to_string(len)));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        // add null at given key and store the reference for later
+        object_element = &(ref_stack.back()->m_value.object->operator[](val));
+        return true;
+    }
+
+    bool end_object()
+    {
+        ref_stack.pop_back();
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
+
+        if (JSON_HEDLEY_UNLIKELY(len != std::size_t(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408,
+                                            "excessive array size: " + std::to_string(len)));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        ref_stack.pop_back();
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+    */
+    template<typename Value>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    BasicJsonType* handle_value(Value&& v)
+    {
+        if (ref_stack.empty())
+        {
+            root = BasicJsonType(std::forward<Value>(v));
+            return &root;
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->emplace_back(std::forward<Value>(v));
+            return &(ref_stack.back()->m_value.array->back());
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_object());
+        JSON_ASSERT(object_element);
+        *object_element = BasicJsonType(std::forward<Value>(v));
+        return object_element;
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+template<typename BasicJsonType>
+class json_sax_dom_callback_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using parser_callback_t = typename BasicJsonType::parser_callback_t;
+    using parse_event_t = typename BasicJsonType::parse_event_t;
+
+    json_sax_dom_callback_parser(BasicJsonType& r,
+                                 const parser_callback_t cb,
+                                 const bool allow_exceptions_ = true)
+        : root(r), callback(cb), allow_exceptions(allow_exceptions_)
+    {
+        keep_stack.push_back(true);
+    }
+
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default;
+    ~json_sax_dom_callback_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        // check callback for object start
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::object, true);
+        ref_stack.push_back(val.second);
+
+        // check object limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != std::size_t(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive object size: " + std::to_string(len)));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        BasicJsonType k = BasicJsonType(val);
+
+        // check callback for key
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
+        key_keep_stack.push_back(keep);
+
+        // add discarded value at given key and store the reference for later
+        if (keep && ref_stack.back())
+        {
+            object_element = &(ref_stack.back()->m_value.object->operator[](val) = discarded);
+        }
+
+        return true;
+    }
+
+    bool end_object()
+    {
+        if (ref_stack.back() && !callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
+        {
+            // discard object
+            *ref_stack.back() = discarded;
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        {
+            // remove discarded value
+            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
+            {
+                if (it->is_discarded())
+                {
+                    ref_stack.back()->erase(it);
+                    break;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::array, true);
+        ref_stack.push_back(val.second);
+
+        // check array limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != std::size_t(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive array size: " + std::to_string(len)));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        bool keep = true;
+
+        if (ref_stack.back())
+        {
+            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
+            if (!keep)
+            {
+                // discard array
+                *ref_stack.back() = discarded;
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        // remove discarded value
+        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->pop_back();
+        }
+
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @param[in] v  value to add to the JSON value we build during parsing
+    @param[in] skip_callback  whether we should skip calling the callback
+               function; this is required after start_array() and
+               start_object() SAX events, because otherwise we would call the
+               callback function with an empty array or object, respectively.
+
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+
+    @return pair of boolean (whether value should be kept) and pointer (to the
+            passed value in the ref_stack hierarchy; nullptr if not kept)
+    */
+    template<typename Value>
+    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
+    {
+        JSON_ASSERT(!keep_stack.empty());
+
+        // do not handle this value if we know it would be added to a discarded
+        // container
+        if (!keep_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // create value
+        auto value = BasicJsonType(std::forward<Value>(v));
+
+        // check callback
+        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
+
+        // do not handle this value if we just learnt it shall be discarded
+        if (!keep)
+        {
+            return {false, nullptr};
+        }
+
+        if (ref_stack.empty())
+        {
+            root = std::move(value);
+            return {true, &root};
+        }
+
+        // skip this value if we already decided to skip the parent
+        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
+        if (!ref_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // we now only expect arrays and objects
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        // array
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->push_back(std::move(value));
+            return {true, &(ref_stack.back()->m_value.array->back())};
+        }
+
+        // object
+        JSON_ASSERT(ref_stack.back()->is_object());
+        // check if we should store an element for the current key
+        JSON_ASSERT(!key_keep_stack.empty());
+        const bool store_element = key_keep_stack.back();
+        key_keep_stack.pop_back();
+
+        if (!store_element)
+        {
+            return {false, nullptr};
+        }
+
+        JSON_ASSERT(object_element);
+        *object_element = std::move(value);
+        return {true, object_element};
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// stack to manage which values to keep
+    std::vector<bool> keep_stack {};
+    /// stack to manage which object keys to keep
+    std::vector<bool> key_keep_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// callback function
+    const parser_callback_t callback = nullptr;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// a discarded value for the callback
+    BasicJsonType discarded = BasicJsonType::value_t::discarded;
+};
+
+template<typename BasicJsonType>
+class json_sax_acceptor
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    bool null()
+    {
+        return true;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_integer(number_integer_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool string(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool binary(binary_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool start_object(std::size_t /*unused*/ = std::size_t(-1))
+    {
+        return true;
+    }
+
+    bool key(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool end_object()
+    {
+        return true;
+    }
+
+    bool start_array(std::size_t /*unused*/ = std::size_t(-1))
+    {
+        return true;
+    }
+
+    bool end_array()
+    {
+        return true;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
+    {
+        return false;
+    }
+};
+}  // namespace detail
+
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+
+#include <array> // array
+#include <clocale> // localeconv
+#include <cstddef> // size_t
+#include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
+#include <initializer_list> // initializer_list
+#include <string> // char_traits, string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////
+// lexer //
+///////////
+
+template<typename BasicJsonType>
+class lexer_base
+{
+  public:
+    /// token types for the parser
+    enum class token_type
+    {
+        uninitialized,    ///< indicating the scanner is uninitialized
+        literal_true,     ///< the `true` literal
+        literal_false,    ///< the `false` literal
+        literal_null,     ///< the `null` literal
+        value_string,     ///< a string -- use get_string() for actual value
+        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
+        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
+        value_float,      ///< an floating point number -- use get_number_float() for actual value
+        begin_array,      ///< the character for array begin `[`
+        begin_object,     ///< the character for object begin `{`
+        end_array,        ///< the character for array end `]`
+        end_object,       ///< the character for object end `}`
+        name_separator,   ///< the name separator `:`
+        value_separator,  ///< the value separator `,`
+        parse_error,      ///< indicating a parse error
+        end_of_input,     ///< indicating the end of the input buffer
+        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
+    };
+
+    /// return name of values of type token_type (only used for errors)
+    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_CONST
+    static const char* token_type_name(const token_type t) noexcept
+    {
+        switch (t)
+        {
+            case token_type::uninitialized:
+                return "<uninitialized>";
+            case token_type::literal_true:
+                return "true literal";
+            case token_type::literal_false:
+                return "false literal";
+            case token_type::literal_null:
+                return "null literal";
+            case token_type::value_string:
+                return "string literal";
+            case token_type::value_unsigned:
+            case token_type::value_integer:
+            case token_type::value_float:
+                return "number literal";
+            case token_type::begin_array:
+                return "'['";
+            case token_type::begin_object:
+                return "'{'";
+            case token_type::end_array:
+                return "']'";
+            case token_type::end_object:
+                return "'}'";
+            case token_type::name_separator:
+                return "':'";
+            case token_type::value_separator:
+                return "','";
+            case token_type::parse_error:
+                return "<parse error>";
+            case token_type::end_of_input:
+                return "end of input";
+            case token_type::literal_or_value:
+                return "'[', '{', or a literal";
+            // LCOV_EXCL_START
+            default: // catch non-enum values
+                return "unknown token";
+                // LCOV_EXCL_STOP
+        }
+    }
+};
+/*!
+@brief lexical analysis
+
+This class organizes the lexical analysis during JSON deserialization.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class lexer : public lexer_base<BasicJsonType>
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    using token_type = typename lexer_base<BasicJsonType>::token_type;
+
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false)
+        : ia(std::move(adapter))
+        , ignore_comments(ignore_comments_)
+        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
+    {}
+
+    // delete because of pointer members
+    lexer(const lexer&) = delete;
+    lexer(lexer&&) = default;
+    lexer& operator=(lexer&) = delete;
+    lexer& operator=(lexer&&) = default;
+    ~lexer() = default;
+
+  private:
+    /////////////////////
+    // locales
+    /////////////////////
+
+    /// return the locale-dependent decimal point
+    JSON_HEDLEY_PURE
+    static char get_decimal_point() noexcept
+    {
+        const auto* loc = localeconv();
+        JSON_ASSERT(loc != nullptr);
+        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
+    }
+
+    /////////////////////
+    // scan functions
+    /////////////////////
+
+    /*!
+    @brief get codepoint from 4 hex characters following `\u`
+
+    For input "\u c1 c2 c3 c4" the codepoint is:
+      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
+    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
+
+    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
+    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
+    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
+    between the ASCII value of the character and the desired integer value.
+
+    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
+            non-hex character)
+    */
+    int get_codepoint()
+    {
+        // this function only makes sense after reading `\u`
+        JSON_ASSERT(current == 'u');
+        int codepoint = 0;
+
+        const auto factors = { 12u, 8u, 4u, 0u };
+        for (const auto factor : factors)
+        {
+            get();
+
+            if (current >= '0' && current <= '9')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
+            }
+            else if (current >= 'A' && current <= 'F')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
+            }
+            else if (current >= 'a' && current <= 'f')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
+            }
+            else
+            {
+                return -1;
+            }
+        }
+
+        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
+        return codepoint;
+    }
+
+    /*!
+    @brief check if the next byte(s) are inside a given range
+
+    Adds the current byte and, for each passed range, reads a new byte and
+    checks if it is inside the range. If a violation was detected, set up an
+    error message and return false. Otherwise, return true.
+
+    @param[in] ranges  list of integers; interpreted as list of pairs of
+                       inclusive lower and upper bound, respectively
+
+    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
+         1, 2, or 3 pairs. This precondition is enforced by an assertion.
+
+    @return true if and only if no range violation was detected
+    */
+    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    {
+        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
+        add(current);
+
+        for (auto range = ranges.begin(); range != ranges.end(); ++range)
+        {
+            get();
+            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range)))
+            {
+                add(current);
+            }
+            else
+            {
+                error_message = "invalid string: ill-formed UTF-8 byte";
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief scan a string literal
+
+    This function scans a string according to Sect. 7 of RFC 7159. While
+    scanning, bytes are escaped and copied into buffer token_buffer. Then the
+    function returns successfully, token_buffer is *not* null-terminated (as it
+    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
+    string.
+
+    @return token_type::value_string if string could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note In case of errors, variable error_message contains a textual
+          description.
+    */
+    token_type scan_string()
+    {
+        // reset token_buffer (ignore opening quote)
+        reset();
+
+        // we entered the function by reading an open quote
+        JSON_ASSERT(current == '\"');
+
+        while (true)
+        {
+            // get next character
+            switch (get())
+            {
+                // end of file while parsing string
+                case std::char_traits<char_type>::eof():
+                {
+                    error_message = "invalid string: missing closing quote";
+                    return token_type::parse_error;
+                }
+
+                // closing quote
+                case '\"':
+                {
+                    return token_type::value_string;
+                }
+
+                // escapes
+                case '\\':
+                {
+                    switch (get())
+                    {
+                        // quotation mark
+                        case '\"':
+                            add('\"');
+                            break;
+                        // reverse solidus
+                        case '\\':
+                            add('\\');
+                            break;
+                        // solidus
+                        case '/':
+                            add('/');
+                            break;
+                        // backspace
+                        case 'b':
+                            add('\b');
+                            break;
+                        // form feed
+                        case 'f':
+                            add('\f');
+                            break;
+                        // line feed
+                        case 'n':
+                            add('\n');
+                            break;
+                        // carriage return
+                        case 'r':
+                            add('\r');
+                            break;
+                        // tab
+                        case 't':
+                            add('\t');
+                            break;
+
+                        // unicode escapes
+                        case 'u':
+                        {
+                            const int codepoint1 = get_codepoint();
+                            int codepoint = codepoint1; // start with codepoint1
+
+                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
+                            {
+                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                return token_type::parse_error;
+                            }
+
+                            // check if code point is a high surrogate
+                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
+                            {
+                                // expect next \uxxxx entry
+                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
+                                {
+                                    const int codepoint2 = get_codepoint();
+
+                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
+                                    {
+                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                        return token_type::parse_error;
+                                    }
+
+                                    // check if codepoint2 is a low surrogate
+                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
+                                    {
+                                        // overwrite codepoint
+                                        codepoint = static_cast<int>(
+                                                        // high surrogate occupies the most significant 22 bits
+                                                        (static_cast<unsigned int>(codepoint1) << 10u)
+                                                        // low surrogate occupies the least significant 15 bits
+                                                        + static_cast<unsigned int>(codepoint2)
+                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
+                                                        // in the result so we have to subtract with:
+                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
+                                                        - 0x35FDC00u);
+                                    }
+                                    else
+                                    {
+                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                        return token_type::parse_error;
+                                    }
+                                }
+                                else
+                                {
+                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+                            else
+                            {
+                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
+                                {
+                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+
+                            // result of the above calculation yields a proper codepoint
+                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
+
+                            // translate codepoint into bytes
+                            if (codepoint < 0x80)
+                            {
+                                // 1-byte characters: 0xxxxxxx (ASCII)
+                                add(static_cast<char_int_type>(codepoint));
+                            }
+                            else if (codepoint <= 0x7FF)
+                            {
+                                // 2-byte characters: 110xxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else if (codepoint <= 0xFFFF)
+                            {
+                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else
+                            {
+                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+
+                            break;
+                        }
+
+                        // other characters after escape
+                        default:
+                            error_message = "invalid string: forbidden character after backslash";
+                            return token_type::parse_error;
+                    }
+
+                    break;
+                }
+
+                // invalid control characters
+                case 0x00:
+                {
+                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
+                    return token_type::parse_error;
+                }
+
+                case 0x01:
+                {
+                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
+                    return token_type::parse_error;
+                }
+
+                case 0x02:
+                {
+                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
+                    return token_type::parse_error;
+                }
+
+                case 0x03:
+                {
+                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
+                    return token_type::parse_error;
+                }
+
+                case 0x04:
+                {
+                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
+                    return token_type::parse_error;
+                }
+
+                case 0x05:
+                {
+                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
+                    return token_type::parse_error;
+                }
+
+                case 0x06:
+                {
+                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
+                    return token_type::parse_error;
+                }
+
+                case 0x07:
+                {
+                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
+                    return token_type::parse_error;
+                }
+
+                case 0x08:
+                {
+                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
+                    return token_type::parse_error;
+                }
+
+                case 0x09:
+                {
+                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
+                    return token_type::parse_error;
+                }
+
+                case 0x0A:
+                {
+                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
+                    return token_type::parse_error;
+                }
+
+                case 0x0B:
+                {
+                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
+                    return token_type::parse_error;
+                }
+
+                case 0x0C:
+                {
+                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
+                    return token_type::parse_error;
+                }
+
+                case 0x0D:
+                {
+                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
+                    return token_type::parse_error;
+                }
+
+                case 0x0E:
+                {
+                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
+                    return token_type::parse_error;
+                }
+
+                case 0x0F:
+                {
+                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
+                    return token_type::parse_error;
+                }
+
+                case 0x10:
+                {
+                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
+                    return token_type::parse_error;
+                }
+
+                case 0x11:
+                {
+                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
+                    return token_type::parse_error;
+                }
+
+                case 0x12:
+                {
+                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
+                    return token_type::parse_error;
+                }
+
+                case 0x13:
+                {
+                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
+                    return token_type::parse_error;
+                }
+
+                case 0x14:
+                {
+                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
+                    return token_type::parse_error;
+                }
+
+                case 0x15:
+                {
+                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
+                    return token_type::parse_error;
+                }
+
+                case 0x16:
+                {
+                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
+                    return token_type::parse_error;
+                }
+
+                case 0x17:
+                {
+                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
+                    return token_type::parse_error;
+                }
+
+                case 0x18:
+                {
+                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
+                    return token_type::parse_error;
+                }
+
+                case 0x19:
+                {
+                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
+                    return token_type::parse_error;
+                }
+
+                case 0x1A:
+                {
+                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
+                    return token_type::parse_error;
+                }
+
+                case 0x1B:
+                {
+                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
+                    return token_type::parse_error;
+                }
+
+                case 0x1C:
+                {
+                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
+                    return token_type::parse_error;
+                }
+
+                case 0x1D:
+                {
+                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
+                    return token_type::parse_error;
+                }
+
+                case 0x1E:
+                {
+                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
+                    return token_type::parse_error;
+                }
+
+                case 0x1F:
+                {
+                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
+                    return token_type::parse_error;
+                }
+
+                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
+                case 0x20:
+                case 0x21:
+                case 0x23:
+                case 0x24:
+                case 0x25:
+                case 0x26:
+                case 0x27:
+                case 0x28:
+                case 0x29:
+                case 0x2A:
+                case 0x2B:
+                case 0x2C:
+                case 0x2D:
+                case 0x2E:
+                case 0x2F:
+                case 0x30:
+                case 0x31:
+                case 0x32:
+                case 0x33:
+                case 0x34:
+                case 0x35:
+                case 0x36:
+                case 0x37:
+                case 0x38:
+                case 0x39:
+                case 0x3A:
+                case 0x3B:
+                case 0x3C:
+                case 0x3D:
+                case 0x3E:
+                case 0x3F:
+                case 0x40:
+                case 0x41:
+                case 0x42:
+                case 0x43:
+                case 0x44:
+                case 0x45:
+                case 0x46:
+                case 0x47:
+                case 0x48:
+                case 0x49:
+                case 0x4A:
+                case 0x4B:
+                case 0x4C:
+                case 0x4D:
+                case 0x4E:
+                case 0x4F:
+                case 0x50:
+                case 0x51:
+                case 0x52:
+                case 0x53:
+                case 0x54:
+                case 0x55:
+                case 0x56:
+                case 0x57:
+                case 0x58:
+                case 0x59:
+                case 0x5A:
+                case 0x5B:
+                case 0x5D:
+                case 0x5E:
+                case 0x5F:
+                case 0x60:
+                case 0x61:
+                case 0x62:
+                case 0x63:
+                case 0x64:
+                case 0x65:
+                case 0x66:
+                case 0x67:
+                case 0x68:
+                case 0x69:
+                case 0x6A:
+                case 0x6B:
+                case 0x6C:
+                case 0x6D:
+                case 0x6E:
+                case 0x6F:
+                case 0x70:
+                case 0x71:
+                case 0x72:
+                case 0x73:
+                case 0x74:
+                case 0x75:
+                case 0x76:
+                case 0x77:
+                case 0x78:
+                case 0x79:
+                case 0x7A:
+                case 0x7B:
+                case 0x7C:
+                case 0x7D:
+                case 0x7E:
+                case 0x7F:
+                {
+                    add(current);
+                    break;
+                }
+
+                // U+0080..U+07FF: bytes C2..DF 80..BF
+                case 0xC2:
+                case 0xC3:
+                case 0xC4:
+                case 0xC5:
+                case 0xC6:
+                case 0xC7:
+                case 0xC8:
+                case 0xC9:
+                case 0xCA:
+                case 0xCB:
+                case 0xCC:
+                case 0xCD:
+                case 0xCE:
+                case 0xCF:
+                case 0xD0:
+                case 0xD1:
+                case 0xD2:
+                case 0xD3:
+                case 0xD4:
+                case 0xD5:
+                case 0xD6:
+                case 0xD7:
+                case 0xD8:
+                case 0xD9:
+                case 0xDA:
+                case 0xDB:
+                case 0xDC:
+                case 0xDD:
+                case 0xDE:
+                case 0xDF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
+                case 0xE0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
+                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
+                case 0xE1:
+                case 0xE2:
+                case 0xE3:
+                case 0xE4:
+                case 0xE5:
+                case 0xE6:
+                case 0xE7:
+                case 0xE8:
+                case 0xE9:
+                case 0xEA:
+                case 0xEB:
+                case 0xEC:
+                case 0xEE:
+                case 0xEF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
+                case 0xED:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+                case 0xF0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+                case 0xF1:
+                case 0xF2:
+                case 0xF3:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+                case 0xF4:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // remaining bytes (80..C1 and F5..FF) are ill-formed
+                default:
+                {
+                    error_message = "invalid string: ill-formed UTF-8 byte";
+                    return token_type::parse_error;
+                }
+            }
+        }
+    }
+
+    /*!
+     * @brief scan a comment
+     * @return whether comment could be scanned successfully
+     */
+    bool scan_comment()
+    {
+        switch (get())
+        {
+            // single-line comments skip input until a newline or EOF is read
+            case '/':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case '\n':
+                        case '\r':
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                            return true;
+
+                        default:
+                            break;
+                    }
+                }
+            }
+
+            // multi-line comments skip input until */ is read
+            case '*':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                        {
+                            error_message = "invalid comment; missing closing '*/'";
+                            return false;
+                        }
+
+                        case '*':
+                        {
+                            switch (get())
+                            {
+                                case '/':
+                                    return true;
+
+                                default:
+                                {
+                                    unget();
+                                    continue;
+                                }
+                            }
+                        }
+
+                        default:
+                            continue;
+                    }
+                }
+            }
+
+            // unexpected character after reading '/'
+            default:
+            {
+                error_message = "invalid comment; expecting '/' or '*' after '/'";
+                return false;
+            }
+        }
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(float& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtof(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtod(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(long double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtold(str, endptr);
+    }
+
+    /*!
+    @brief scan a number literal
+
+    This function scans a string according to Sect. 6 of RFC 7159.
+
+    The function is realized with a deterministic finite state machine derived
+    from the grammar described in RFC 7159. Starting in state "init", the
+    input is read and used to determined the next state. Only state "done"
+    accepts the number. State "error" is a trap state to model errors. In the
+    table below, "anything" means any character but the ones listed before.
+
+    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
+    ---------|----------|----------|----------|---------|---------|----------|-----------
+    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
+    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
+    zero     | done     | done     | exponent | done    | done    | decimal1 | done
+    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
+    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
+    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
+    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
+    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
+    any2     | any2     | any2     | done     | done    | done    | done     | done
+
+    The state machine is realized with one label per state (prefixed with
+    "scan_number_") and `goto` statements between them. The state machine
+    contains cycles, but any cycle can be left when EOF is read. Therefore,
+    the function is guaranteed to terminate.
+
+    During scanning, the read bytes are stored in token_buffer. This string is
+    then converted to a signed integer, an unsigned integer, or a
+    floating-point number.
+
+    @return token_type::value_unsigned, token_type::value_integer, or
+            token_type::value_float if number could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note The scanner is independent of the current locale. Internally, the
+          locale's decimal point is used instead of `.` to work with the
+          locale-dependent converters.
+    */
+    token_type scan_number()  // lgtm [cpp/use-of-goto]
+    {
+        // reset token_buffer to store the number's bytes
+        reset();
+
+        // the type of the parsed number; initially set to unsigned; will be
+        // changed if minus sign, decimal point or exponent is read
+        token_type number_type = token_type::value_unsigned;
+
+        // state (init): we just found out we need to scan a number
+        switch (current)
+        {
+            case '-':
+            {
+                add(current);
+                goto scan_number_minus;
+            }
+
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            // all other characters are rejected outside scan_number()
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false);  // LCOV_EXCL_LINE
+        }
+
+scan_number_minus:
+        // state: we just parsed a leading minus sign
+        number_type = token_type::value_integer;
+        switch (get())
+        {
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '-'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_zero:
+        // state: we just parse a zero (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_any1:
+        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_decimal1:
+        // state: we just parsed a decimal point
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '.'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_decimal2:
+        // we just parsed at least one number after a decimal point
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_exponent:
+        // we just parsed an exponent
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '+':
+            case '-':
+            {
+                add(current);
+                goto scan_number_sign;
+            }
+
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message =
+                    "invalid number; expected '+', '-', or digit after exponent";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_sign:
+        // we just parsed an exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after exponent sign";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_any2:
+        // we just parsed a number after the exponent or exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_done:
+        // unget the character after the number (we only read it to know that
+        // we are done scanning a number)
+        unget();
+
+        char* endptr = nullptr;
+        errno = 0;
+
+        // try to parse integers first and fall back to floats
+        if (number_type == token_type::value_unsigned)
+        {
+            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_unsigned = static_cast<number_unsigned_t>(x);
+                if (value_unsigned == x)
+                {
+                    return token_type::value_unsigned;
+                }
+            }
+        }
+        else if (number_type == token_type::value_integer)
+        {
+            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_integer = static_cast<number_integer_t>(x);
+                if (value_integer == x)
+                {
+                    return token_type::value_integer;
+                }
+            }
+        }
+
+        // this code is reached if we parse a floating-point number or if an
+        // integer conversion above failed
+        strtof(value_float, token_buffer.data(), &endptr);
+
+        // we checked the number format before
+        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+        return token_type::value_float;
+    }
+
+    /*!
+    @param[in] literal_text  the literal text to expect
+    @param[in] length        the length of the passed literal text
+    @param[in] return_type   the token type to return on success
+    */
+    JSON_HEDLEY_NON_NULL(2)
+    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+                            token_type return_type)
+    {
+        JSON_ASSERT(std::char_traits<char_type>::to_char_type(current) == literal_text[0]);
+        for (std::size_t i = 1; i < length; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(std::char_traits<char_type>::to_char_type(get()) != literal_text[i]))
+            {
+                error_message = "invalid literal";
+                return token_type::parse_error;
+            }
+        }
+        return return_type;
+    }
+
+    /////////////////////
+    // input management
+    /////////////////////
+
+    /// reset token_buffer; current character is beginning of token
+    void reset() noexcept
+    {
+        token_buffer.clear();
+        token_string.clear();
+        token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+    }
+
+    /*
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a
+    `std::char_traits<char>::eof()` in that case.  Stores the scanned characters
+    for use in error messages.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++position.chars_read_total;
+        ++position.chars_read_current_line;
+
+        if (next_unget)
+        {
+            // just reset the next_unget variable and work with current
+            next_unget = false;
+        }
+        else
+        {
+            current = ia.get_character();
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+        }
+
+        if (current == '\n')
+        {
+            ++position.lines_read;
+            position.chars_read_current_line = 0;
+        }
+
+        return current;
+    }
+
+    /*!
+    @brief unget current character (read it again on next get)
+
+    We implement unget by setting variable next_unget to true. The input is not
+    changed - we just simulate ungetting by modifying chars_read_total,
+    chars_read_current_line, and token_string. The next call to get() will
+    behave as if the unget character is read again.
+    */
+    void unget()
+    {
+        next_unget = true;
+
+        --position.chars_read_total;
+
+        // in case we "unget" a newline, we have to also decrement the lines_read
+        if (position.chars_read_current_line == 0)
+        {
+            if (position.lines_read > 0)
+            {
+                --position.lines_read;
+            }
+        }
+        else
+        {
+            --position.chars_read_current_line;
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            JSON_ASSERT(!token_string.empty());
+            token_string.pop_back();
+        }
+    }
+
+    /// add a character to token_buffer
+    void add(char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+  public:
+    /////////////////////
+    // value getters
+    /////////////////////
+
+    /// return integer value
+    constexpr number_integer_t get_number_integer() const noexcept
+    {
+        return value_integer;
+    }
+
+    /// return unsigned integer value
+    constexpr number_unsigned_t get_number_unsigned() const noexcept
+    {
+        return value_unsigned;
+    }
+
+    /// return floating-point value
+    constexpr number_float_t get_number_float() const noexcept
+    {
+        return value_float;
+    }
+
+    /// return current string value (implicitly resets the token; useful only once)
+    string_t& get_string()
+    {
+        return token_buffer;
+    }
+
+    /////////////////////
+    // diagnostics
+    /////////////////////
+
+    /// return position of last read token
+    constexpr position_t get_position() const noexcept
+    {
+        return position;
+    }
+
+    /// return the last read token (for errors only).  Will never contain EOF
+    /// (an arbitrary value that is not a valid char value, often -1), because
+    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
+    std::string get_token_string() const
+    {
+        // escape control characters
+        std::string result;
+        for (const auto c : token_string)
+        {
+            if (static_cast<unsigned char>(c) <= '\x1F')
+            {
+                // escape control characters
+                std::array<char, 9> cs{{}};
+                (std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c));
+                result += cs.data();
+            }
+            else
+            {
+                // add character as is
+                result.push_back(static_cast<std::string::value_type>(c));
+            }
+        }
+
+        return result;
+    }
+
+    /// return syntax error message
+    JSON_HEDLEY_RETURNS_NON_NULL
+    constexpr const char* get_error_message() const noexcept
+    {
+        return error_message;
+    }
+
+    /////////////////////
+    // actual scanner
+    /////////////////////
+
+    /*!
+    @brief skip the UTF-8 byte order mark
+    @return true iff there is no BOM or the correct BOM has been skipped
+    */
+    bool skip_bom()
+    {
+        if (get() == 0xEF)
+        {
+            // check if we completely parse the BOM
+            return get() == 0xBB && get() == 0xBF;
+        }
+
+        // the first character is not the beginning of the BOM; unget it to
+        // process is later
+        unget();
+        return true;
+    }
+
+    void skip_whitespace()
+    {
+        do
+        {
+            get();
+        }
+        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
+    }
+
+    token_type scan()
+    {
+        // initially, skip the BOM
+        if (position.chars_read_total == 0 && !skip_bom())
+        {
+            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
+            return token_type::parse_error;
+        }
+
+        // read next character and ignore whitespace
+        skip_whitespace();
+
+        // ignore comments
+        while (ignore_comments && current == '/')
+        {
+            if (!scan_comment())
+            {
+                return token_type::parse_error;
+            }
+
+            // skip following whitespace
+            skip_whitespace();
+        }
+
+        switch (current)
+        {
+            // structural characters
+            case '[':
+                return token_type::begin_array;
+            case ']':
+                return token_type::end_array;
+            case '{':
+                return token_type::begin_object;
+            case '}':
+                return token_type::end_object;
+            case ':':
+                return token_type::name_separator;
+            case ',':
+                return token_type::value_separator;
+
+            // literals
+            case 't':
+            {
+                std::array<char_type, 4> true_literal = {{'t', 'r', 'u', 'e'}};
+                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
+            }
+            case 'f':
+            {
+                std::array<char_type, 5> false_literal = {{'f', 'a', 'l', 's', 'e'}};
+                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
+            }
+            case 'n':
+            {
+                std::array<char_type, 4> null_literal = {{'n', 'u', 'l', 'l'}};
+                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
+            }
+
+            // string
+            case '\"':
+                return scan_string();
+
+            // number
+            case '-':
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                return scan_number();
+
+            // end of input (the null byte is needed when parsing from
+            // string literals)
+            case '\0':
+            case std::char_traits<char_type>::eof():
+                return token_type::end_of_input;
+
+            // error
+            default:
+                error_message = "invalid literal";
+                return token_type::parse_error;
+        }
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// whether comments should be ignored (true) or signaled as errors (false)
+    const bool ignore_comments = false;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// whether the next get() call should just return current
+    bool next_unget = false;
+
+    /// the start position of the current token
+    position_t position {};
+
+    /// raw input token string (for error messages)
+    std::vector<char_type> token_string {};
+
+    /// buffer for variable-length tokens (numbers, strings)
+    string_t token_buffer {};
+
+    /// a description of occurred lexer errors
+    const char* error_message = "";
+
+    // number values
+    number_integer_t value_integer = 0;
+    number_unsigned_t value_unsigned = 0;
+    number_float_t value_float = 0;
+
+    /// the decimal point
+    const char_int_type decimal_point_char = '.';
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+
+#include <cstdint> // size_t
+#include <utility> // declval
+#include <string> // string
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename T>
+using null_function_t = decltype(std::declval<T&>().null());
+
+template<typename T>
+using boolean_function_t =
+    decltype(std::declval<T&>().boolean(std::declval<bool>()));
+
+template<typename T, typename Integer>
+using number_integer_function_t =
+    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
+
+template<typename T, typename Unsigned>
+using number_unsigned_function_t =
+    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
+
+template<typename T, typename Float, typename String>
+using number_float_function_t = decltype(std::declval<T&>().number_float(
+                                    std::declval<Float>(), std::declval<const String&>()));
+
+template<typename T, typename String>
+using string_function_t =
+    decltype(std::declval<T&>().string(std::declval<String&>()));
+
+template<typename T, typename Binary>
+using binary_function_t =
+    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
+
+template<typename T>
+using start_object_function_t =
+    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
+
+template<typename T, typename String>
+using key_function_t =
+    decltype(std::declval<T&>().key(std::declval<String&>()));
+
+template<typename T>
+using end_object_function_t = decltype(std::declval<T&>().end_object());
+
+template<typename T>
+using start_array_function_t =
+    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
+
+template<typename T>
+using end_array_function_t = decltype(std::declval<T&>().end_array());
+
+template<typename T, typename Exception>
+using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+        std::declval<std::size_t>(), std::declval<const std::string&>(),
+        std::declval<const Exception&>()));
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static constexpr bool value =
+        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, boolean_function_t, SAX>::value &&
+        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
+        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
+        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value &&
+        is_detected_exact<bool, start_array_function_t, SAX>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value &&
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
+};
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax_static_asserts
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(
+        is_detected_exact<bool, number_integer_function_t, SAX,
+        number_integer_t>::value,
+        "Missing/invalid function: bool number_integer(number_integer_t)");
+    static_assert(
+        is_detected_exact<bool, number_unsigned_function_t, SAX,
+        number_unsigned_t>::value,
+        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+                  number_float_t, string_t>::value,
+                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
+    static_assert(
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+        "Missing/invalid function: bool string(string_t&)");
+    static_assert(
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
+                  "Missing/invalid function: bool key(string_t&)");
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_object()");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_array(std::size_t)");
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_array()");
+    static_assert(
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
+        "Missing/invalid function: bool parse_error(std::size_t, const "
+        "std::string&, const exception&)");
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+/// how to treat CBOR tags
+enum class cbor_tag_handler_t
+{
+    error,  ///< throw a parse_error exception in case of a tag
+    ignore   ///< ignore tags
+};
+
+/*!
+@brief determine system byte order
+
+@return true if and only if system's byte order is little endian
+
+@note from https://stackoverflow.com/a/1001328/266378
+*/
+static inline bool little_endianess(int num = 1) noexcept
+{
+    return *reinterpret_cast<char*>(&num) == 1;
+}
+
+
+///////////////////
+// binary reader //
+///////////////////
+
+/*!
+@brief deserialization of CBOR, MessagePack, and UBJSON values
+*/
+template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType>>
+class binary_reader
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using json_sax_t = SAX;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    /*!
+    @brief create a binary reader
+
+    @param[in] adapter  input adapter to read from
+    */
+    explicit binary_reader(InputAdapterType&& adapter) : ia(std::move(adapter))
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+    }
+
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) = default;
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) = default;
+    ~binary_reader() = default;
+
+    /*!
+    @param[in] format  the binary format to parse
+    @param[in] sax_    a SAX event processor
+    @param[in] strict  whether to expect the input to be consumed completed
+    @param[in] tag_handler  how to treat CBOR tags
+
+    @return
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool sax_parse(const input_format_t format,
+                   json_sax_t* sax_,
+                   const bool strict = true,
+                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        sax = sax_;
+        bool result = false;
+
+        switch (format)
+        {
+            case input_format_t::bson:
+                result = parse_bson_internal();
+                break;
+
+            case input_format_t::cbor:
+                result = parse_cbor_internal(true, tag_handler);
+                break;
+
+            case input_format_t::msgpack:
+                result = parse_msgpack_internal();
+                break;
+
+            case input_format_t::ubjson:
+                result = parse_ubjson_internal();
+                break;
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false);  // LCOV_EXCL_LINE
+        }
+
+        // strict mode: next byte must be EOF
+        if (result && strict)
+        {
+            if (format == input_format_t::ubjson)
+            {
+                get_ignore_noop();
+            }
+            else
+            {
+                get();
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(current != std::char_traits<char_type>::eof()))
+            {
+                return sax->parse_error(chars_read, get_token_string(),
+                                        parse_error::create(110, chars_read, exception_message(format, "expected end of input; last byte: 0x" + get_token_string(), "value")));
+            }
+        }
+
+        return result;
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @brief Reads in a BSON-object and passes it to the SAX-parser.
+    @return whether a valid BSON-value was passed to the SAX parser
+    */
+    bool parse_bson_internal()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(std::size_t(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        {
+            return false;
+        }
+
+        return sax->end_object();
+    }
+
+    /*!
+    @brief Parses a C-style string from the BSON input.
+    @param[in, out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @return `true` if the \x00-byte indicating the end of the string was
+             encountered before the EOF; false` indicates an unexpected EOF.
+    */
+    bool get_bson_cstr(string_t& result)
+    {
+        auto out = std::back_inserter(result);
+        while (true)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
+            {
+                return false;
+            }
+            if (current == 0x00)
+            {
+                return true;
+            }
+            *out++ = static_cast<typename string_t::value_type>(current);
+        }
+    }
+
+    /*!
+    @brief Parses a zero-terminated string of length @a len from the BSON
+           input.
+    @param[in] len  The length (including the zero-byte at the end) of the
+                    string to be read.
+    @param[in, out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 1
+    @return `true` if the string was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_string(const NumberType len, string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 1))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::bson, "string length must be at least 1, is " + std::to_string(len), "string")));
+        }
+
+        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != std::char_traits<char_type>::eof();
+    }
+
+    /*!
+    @brief Parses a byte array input of length @a len from the BSON input.
+    @param[in] len  The length of the byte array to be read.
+    @param[in, out] result  A reference to the binary variable where the read
+                            array is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 0
+    @return `true` if the byte array was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_binary(const NumberType len, binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 0))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::bson, "byte array length cannot be negative, is " + std::to_string(len), "binary")));
+        }
+
+        // All BSON binary values have a subtype
+        std::uint8_t subtype{};
+        get_number<std::uint8_t>(input_format_t::bson, subtype);
+        result.set_subtype(subtype);
+
+        return get_binary(input_format_t::bson, len, result);
+    }
+
+    /*!
+    @brief Read a BSON document element of the given @a element_type.
+    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
+    @param[in] element_type_parse_position The position in the input stream,
+               where the `element_type` was read.
+    @warning Not all BSON element types are supported yet. An unsupported
+             @a element_type will give rise to a parse_error.114:
+             Unsupported BSON record type 0x...
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_internal(const char_int_type element_type,
+                                     const std::size_t element_type_parse_position)
+    {
+        switch (element_type)
+        {
+            case 0x01: // double
+            {
+                double number{};
+                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0x02: // string
+            {
+                std::int32_t len{};
+                string_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
+            }
+
+            case 0x03: // object
+            {
+                return parse_bson_internal();
+            }
+
+            case 0x04: // array
+            {
+                return parse_bson_array();
+            }
+
+            case 0x05: // binary
+            {
+                std::int32_t len{};
+                binary_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
+            }
+
+            case 0x08: // boolean
+            {
+                return sax->boolean(get() != 0);
+            }
+
+            case 0x0A: // null
+            {
+                return sax->null();
+            }
+
+            case 0x10: // int32
+            {
+                std::int32_t value{};
+                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            case 0x12: // int64
+            {
+                std::int64_t value{};
+                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            default: // anything else not supported (yet)
+            {
+                std::array<char, 3> cr{{}};
+                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type));
+                return sax->parse_error(element_type_parse_position, std::string(cr.data()), parse_error::create(114, element_type_parse_position, "Unsupported BSON record type 0x" + std::string(cr.data())));
+            }
+        }
+    }
+
+    /*!
+    @brief Read a BSON element list (as specified in the BSON-spec)
+
+    The same binary layout is used for objects and arrays, hence it must be
+    indicated with the argument @a is_array which one is expected
+    (true --> array, false --> object).
+
+    @param[in] is_array Determines if the element list being read is to be
+                        treated as an object (@a is_array == false), or as an
+                        array (@a is_array == true).
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_list(const bool is_array)
+    {
+        string_t key;
+
+        while (auto element_type = get())
+        {
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
+            {
+                return false;
+            }
+
+            const std::size_t element_type_parse_position = chars_read;
+            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            {
+                return false;
+            }
+
+            if (!is_array && !sax->key(key))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
+            {
+                return false;
+            }
+
+            // get_bson_cstr only appends
+            key.clear();
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief Reads an array from the BSON input and passes it to the SAX-parser.
+    @return whether a valid BSON-array was passed to the SAX parser
+    */
+    bool parse_bson_array()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(std::size_t(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        {
+            return false;
+        }
+
+        return sax->end_array();
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true) or whether the last read character should
+                         be considered instead (false)
+    @param[in] tag_handler how CBOR tags should be treated
+
+    @return whether a valid CBOR value was passed to the SAX parser
+    */
+    bool parse_cbor_internal(const bool get_char,
+                             const cbor_tag_handler_t tag_handler)
+    {
+        switch (get_char ? get() : current)
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::cbor, "value");
+
+            // Integer 0x00..0x17 (0..23)
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            case 0x18: // Unsigned integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x19: // Unsigned integer (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            // Negative integer -1-0x00..-1-0x17 (-1..-24)
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
+
+            case 0x38: // Negative integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                        - static_cast<number_integer_t>(number));
+            }
+
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            case 0x5F: // Binary data (indefinite length)
+            {
+                binary_t b;
+                return get_cbor_binary(b) && sax->binary(b);
+            }
+
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                string_t s;
+                return get_cbor_string(s) && sax->string(s);
+            }
+
+            // array (0x00..0x17 data items follow)
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+                return get_cbor_array(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0x98: // array (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x99: // array (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9A: // array (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9B: // array (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9F: // array (indefinite length)
+                return get_cbor_array(std::size_t(-1), tag_handler);
+
+            // map (0x00..0x17 pairs of data items follow)
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+                return get_cbor_object(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0xB8: // map (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xB9: // map (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBA: // map (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBB: // map (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBF: // map (indefinite length)
+                return get_cbor_object(std::size_t(-1), tag_handler);
+
+            case 0xC6: // tagged item
+            case 0xC7:
+            case 0xC8:
+            case 0xC9:
+            case 0xCA:
+            case 0xCB:
+            case 0xCC:
+            case 0xCD:
+            case 0xCE:
+            case 0xCF:
+            case 0xD0:
+            case 0xD1:
+            case 0xD2:
+            case 0xD3:
+            case 0xD4:
+            case 0xD8: // tagged item (1 bytes follow)
+            case 0xD9: // tagged item (2 bytes follow)
+            case 0xDA: // tagged item (4 bytes follow)
+            case 0xDB: // tagged item (8 bytes follow)
+            {
+                switch (tag_handler)
+                {
+                    case cbor_tag_handler_t::error:
+                    {
+                        auto last_token = get_token_string();
+                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::cbor, "invalid byte: 0x" + last_token, "value")));
+                    }
+
+                    case cbor_tag_handler_t::ignore:
+                    {
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t len{};
+                                get_number(input_format_t::cbor, len);
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t len{};
+                                get_number(input_format_t::cbor, len);
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t len{};
+                                get_number(input_format_t::cbor, len);
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t len{};
+                                get_number(input_format_t::cbor, len);
+                                break;
+                            }
+                            default:
+                                break;
+                        }
+                        return parse_cbor_internal(true, tag_handler);
+                    }
+
+                    default:            // LCOV_EXCL_LINE
+                        JSON_ASSERT(false);  // LCOV_EXCL_LINE
+                }
+            }
+
+            case 0xF4: // false
+                return sax->boolean(false);
+
+            case 0xF5: // true
+                return sax->boolean(true);
+
+            case 0xF6: // null
+                return sax->null();
+
+            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
+            {
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
+            {
+                float number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
+            {
+                double number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            default: // anything else (0xFF is handled inside the other types)
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::cbor, "invalid byte: 0x" + last_token, "value")));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+    Additionally, CBOR's strings with indefinite lengths are supported.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_cbor_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            {
+                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    string_t chunk;
+                    if (!get_cbor_string(chunk))
+                    {
+                        return false;
+                    }
+                    result.append(chunk);
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::cbor, "expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x" + last_token, "string")));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into the byte array.
+    Additionally, CBOR's byte arrays with indefinite lengths are supported.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_cbor_binary(binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            {
+                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5F: // Binary data (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    binary_t chunk;
+                    if (!get_cbor_binary(chunk))
+                    {
+                        return false;
+                    }
+                    result.insert(result.end(), chunk.begin(), chunk.end());
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::cbor, "expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x" + last_token, "binary")));
+            }
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array or std::size_t(-1) for an
+                    array of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether array creation completed
+    */
+    bool get_cbor_array(const std::size_t len,
+                        const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        if (len != std::size_t(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object or std::size_t(-1) for an
+                    object of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether object creation completed
+    */
+    bool get_cbor_object(const std::size_t len,
+                         const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        if (len != std::size_t(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                {
+                    return false;
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+                key.clear();
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                {
+                    return false;
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    /*!
+    @return whether a valid MessagePack value was passed to the SAX parser
+    */
+    bool parse_msgpack_internal()
+    {
+        switch (get())
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::msgpack, "value");
+
+            // positive fixint
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+            case 0x18:
+            case 0x19:
+            case 0x1A:
+            case 0x1B:
+            case 0x1C:
+            case 0x1D:
+            case 0x1E:
+            case 0x1F:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3A:
+            case 0x3B:
+            case 0x3C:
+            case 0x3D:
+            case 0x3E:
+            case 0x3F:
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58:
+            case 0x59:
+            case 0x5A:
+            case 0x5B:
+            case 0x5C:
+            case 0x5D:
+            case 0x5E:
+            case 0x5F:
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78:
+            case 0x79:
+            case 0x7A:
+            case 0x7B:
+            case 0x7C:
+            case 0x7D:
+            case 0x7E:
+            case 0x7F:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            // fixmap
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+                return get_msgpack_object(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixarray
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+            case 0x98:
+            case 0x99:
+            case 0x9A:
+            case 0x9B:
+            case 0x9C:
+            case 0x9D:
+            case 0x9E:
+            case 0x9F:
+                return get_msgpack_array(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            case 0xD9: // str 8
+            case 0xDA: // str 16
+            case 0xDB: // str 32
+            {
+                string_t s;
+                return get_msgpack_string(s) && sax->string(s);
+            }
+
+            case 0xC0: // nil
+                return sax->null();
+
+            case 0xC2: // false
+                return sax->boolean(false);
+
+            case 0xC3: // true
+                return sax->boolean(true);
+
+            case 0xC4: // bin 8
+            case 0xC5: // bin 16
+            case 0xC6: // bin 32
+            case 0xC7: // ext 8
+            case 0xC8: // ext 16
+            case 0xC9: // ext 32
+            case 0xD4: // fixext 1
+            case 0xD5: // fixext 2
+            case 0xD6: // fixext 4
+            case 0xD7: // fixext 8
+            case 0xD8: // fixext 16
+            {
+                binary_t b;
+                return get_msgpack_binary(b) && sax->binary(b);
+            }
+
+            case 0xCA: // float 32
+            {
+                float number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCB: // float 64
+            {
+                double number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCC: // uint 8
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCD: // uint 16
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCE: // uint 32
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCF: // uint 64
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xD0: // int 8
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD1: // int 16
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD2: // int 32
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD3: // int 64
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xDC: // array 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDD: // array 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDE: // map 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            case 0xDF: // map 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            // negative fixint
+            case 0xE0:
+            case 0xE1:
+            case 0xE2:
+            case 0xE3:
+            case 0xE4:
+            case 0xE5:
+            case 0xE6:
+            case 0xE7:
+            case 0xE8:
+            case 0xE9:
+            case 0xEA:
+            case 0xEB:
+            case 0xEC:
+            case 0xED:
+            case 0xEE:
+            case 0xEF:
+            case 0xF0:
+            case 0xF1:
+            case 0xF2:
+            case 0xF3:
+            case 0xF4:
+            case 0xF5:
+            case 0xF6:
+            case 0xF7:
+            case 0xF8:
+            case 0xF9:
+            case 0xFA:
+            case 0xFB:
+            case 0xFC:
+            case 0xFD:
+            case 0xFE:
+            case 0xFF:
+                return sax->number_integer(static_cast<std::int8_t>(current));
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::msgpack, "invalid byte: 0x" + last_token, "value")));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_msgpack_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            {
+                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0xD9: // str 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDA: // str 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDB: // str 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::msgpack, "expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x" + last_token, "string")));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into a byte array.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_msgpack_binary(binary_t& result)
+    {
+        // helper function to set the subtype
+        auto assign_and_return_true = [&result](std::int8_t subtype)
+        {
+            result.set_subtype(static_cast<std::uint8_t>(subtype));
+            return true;
+        };
+
+        switch (current)
+        {
+            case 0xC4: // bin 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC5: // bin 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC6: // bin 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC7: // ext 8
+            {
+                std::uint8_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC8: // ext 16
+            {
+                std::uint16_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC9: // ext 32
+            {
+                std::uint32_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD4: // fixext 1
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 1, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD5: // fixext 2
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 2, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD6: // fixext 4
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 4, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD7: // fixext 8
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 8, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD8: // fixext 16
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 16, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            default:           // LCOV_EXCL_LINE
+                return false;  // LCOV_EXCL_LINE
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array
+    @return whether array creation completed
+    */
+    bool get_msgpack_array(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object
+    @return whether object creation completed
+    */
+    bool get_msgpack_object(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+            key.clear();
+        }
+
+        return sax->end_object();
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether a valid UBJSON value was passed to the SAX parser
+    */
+    bool parse_ubjson_internal(const bool get_char = true)
+    {
+        return get_ubjson_value(get_char ? get_ignore_noop() : current);
+    }
+
+    /*!
+    @brief reads a UBJSON string
+
+    This function is either called after reading the 'S' byte explicitly
+    indicating a string, or in case of an object key where the 'S' byte can be
+    left out.
+
+    @param[out] result   created string
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether string creation completed
+    */
+    bool get_ubjson_string(string_t& result, const bool get_char = true)
+    {
+        if (get_char)
+        {
+            get();  // TODO(niels): may we ignore N here?
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "value")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            case 'U':
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'i':
+            {
+                std::int8_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'I':
+            {
+                std::int16_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'l':
+            {
+                std::int32_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'L':
+            {
+                std::int64_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            default:
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token, "string")));
+        }
+    }
+
+    /*!
+    @param[out] result  determined size
+    @return whether size determination completed
+    */
+    bool get_ubjson_size_value(std::size_t& result)
+    {
+        switch (get_ignore_noop())
+        {
+            case 'U':
+            {
+                std::uint8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token, "size")));
+            }
+        }
+    }
+
+    /*!
+    @brief determine the type and size for a container
+
+    In the optimized UBJSON format, a type and a size can be provided to allow
+    for a more compact representation.
+
+    @param[out] result  pair of the size and the type
+
+    @return whether pair creation completed
+    */
+    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result)
+    {
+        result.first = string_t::npos; // size
+        result.second = 0; // type
+
+        get_ignore_noop();
+
+        if (current == '$')
+        {
+            result.second = get();  // must not ignore 'N', because 'N' maybe the type
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "type")))
+            {
+                return false;
+            }
+
+            get_ignore_noop();
+            if (JSON_HEDLEY_UNLIKELY(current != '#'))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "value")))
+                {
+                    return false;
+                }
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::ubjson, "expected '#' after type information; last byte: 0x" + last_token, "size")));
+            }
+
+            return get_ubjson_size_value(result.first);
+        }
+
+        if (current == '#')
+        {
+            return get_ubjson_size_value(result.first);
+        }
+
+        return true;
+    }
+
+    /*!
+    @param prefix  the previously read or set type prefix
+    @return whether value creation completed
+    */
+    bool get_ubjson_value(const char_int_type prefix)
+    {
+        switch (prefix)
+        {
+            case std::char_traits<char_type>::eof():  // EOF
+                return unexpect_eof(input_format_t::ubjson, "value");
+
+            case 'T':  // true
+                return sax->boolean(true);
+            case 'F':  // false
+                return sax->boolean(false);
+
+            case 'Z':  // null
+                return sax->null();
+
+            case 'U':
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_unsigned(number);
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'd':
+            {
+                float number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'D':
+            {
+                double number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'H':
+            {
+                return get_ubjson_high_precision_number();
+            }
+
+            case 'C':  // char
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "char")))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(current > 127))
+                {
+                    auto last_token = get_token_string();
+                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "byte after 'C' must be in range 0x00..0x7F; last byte: 0x" + last_token, "char")));
+                }
+                string_t s(1, static_cast<typename string_t::value_type>(current));
+                return sax->string(s);
+            }
+
+            case 'S':  // string
+            {
+                string_t s;
+                return get_ubjson_string(s) && sax->string(s);
+            }
+
+            case '[':  // array
+                return get_ubjson_array();
+
+            case '{':  // object
+                return get_ubjson_object();
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::ubjson, "invalid byte: 0x" + last_token, "value")));
+            }
+        }
+    }
+
+    /*!
+    @return whether array creation completed
+    */
+    bool get_ubjson_array()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        if (size_and_type.first != string_t::npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                        {
+                            return false;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(std::size_t(-1))))
+            {
+                return false;
+            }
+
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @return whether object creation completed
+    */
+    bool get_ubjson_object()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        string_t key;
+        if (size_and_type.first != string_t::npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(std::size_t(-1))))
+            {
+                return false;
+            }
+
+            while (current != '}')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    // Note, no reader for UBJSON binary types is implemented because they do
+    // not exist
+
+    bool get_ubjson_high_precision_number()
+    {
+        // get size of following number string
+        std::size_t size{};
+        auto res = get_ubjson_size_value(size);
+        if (JSON_HEDLEY_UNLIKELY(!res))
+        {
+            return res;
+        }
+
+        // get number string
+        std::vector<char> number_vector;
+        for (std::size_t i = 0; i < size; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "number")))
+            {
+                return false;
+            }
+            number_vector.push_back(static_cast<char>(current));
+        }
+
+        // parse number string
+        auto number_ia = detail::input_adapter(std::forward<decltype(number_vector)>(number_vector));
+        auto number_lexer = detail::lexer<BasicJsonType, decltype(number_ia)>(std::move(number_ia), false);
+        const auto result_number = number_lexer.scan();
+        const auto number_string = number_lexer.get_token_string();
+        const auto result_remainder = number_lexer.scan();
+
+        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
+
+        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
+        {
+            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read, exception_message(input_format_t::ubjson, "invalid number text: " + number_lexer.get_token_string(), "high-precision number")));
+        }
+
+        switch (result_number)
+        {
+            case token_type::value_integer:
+                return sax->number_integer(number_lexer.get_number_integer());
+            case token_type::value_unsigned:
+                return sax->number_unsigned(number_lexer.get_number_unsigned());
+            case token_type::value_float:
+                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
+            default:
+                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read, exception_message(input_format_t::ubjson, "invalid number text: " + number_lexer.get_token_string(), "high-precision number")));
+        }
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*!
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a -'ve valued
+    `std::char_traits<char_type>::eof()` in that case.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++chars_read;
+        return current = ia.get_character();
+    }
+
+    /*!
+    @return character read from the input after ignoring all 'N' entries
+    */
+    char_int_type get_ignore_noop()
+    {
+        do
+        {
+            get();
+        }
+        while (current == 'N');
+
+        return current;
+    }
+
+    /*
+    @brief read a number from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format   the current format (for diagnostics)
+    @param[out] result  number of type @a NumberType
+
+    @return whether conversion completed
+
+    @note This function needs to respect the system's endianess, because
+          bytes in CBOR, MessagePack, and UBJSON are stored in network order
+          (big endian) and therefore need reordering on little endian systems.
+    */
+    template<typename NumberType, bool InputIsLittleEndian = false>
+    bool get_number(const input_format_t format, NumberType& result)
+    {
+        // step 1: read input into array with system's byte order
+        std::array<std::uint8_t, sizeof(NumberType)> vec;
+        for (std::size_t i = 0; i < sizeof(NumberType); ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "number")))
+            {
+                return false;
+            }
+
+            // reverse byte order prior to conversion if necessary
+            if (is_little_endian != InputIsLittleEndian)
+            {
+                vec[sizeof(NumberType) - i - 1] = static_cast<std::uint8_t>(current);
+            }
+            else
+            {
+                vec[i] = static_cast<std::uint8_t>(current); // LCOV_EXCL_LINE
+            }
+        }
+
+        // step 2: convert array into number of type T and return
+        std::memcpy(&result, vec.data(), sizeof(NumberType));
+        return true;
+    }
+
+    /*!
+    @brief create a string by reading characters from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of characters to read
+    @param[out] result string created by reading @a len bytes
+
+    @return whether string creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of string memory.
+    */
+    template<typename NumberType>
+    bool get_string(const input_format_t format,
+                    const NumberType len,
+                    string_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<typename string_t::value_type>(current));
+        };
+        return success;
+    }
+
+    /*!
+    @brief create a byte array by reading bytes from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of bytes to read
+    @param[out] result byte array created by reading @a len bytes
+
+    @return whether byte array creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of memory.
+    */
+    template<typename NumberType>
+    bool get_binary(const input_format_t format,
+                    const NumberType len,
+                    binary_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<std::uint8_t>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @param[in] format   the current format (for diagnostics)
+    @param[in] context  further context information (for diagnostics)
+    @return whether the last read character is not EOF
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool unexpect_eof(const input_format_t format, const char* context) const
+    {
+        if (JSON_HEDLEY_UNLIKELY(current == std::char_traits<char_type>::eof()))
+        {
+            return sax->parse_error(chars_read, "<end of file>",
+                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context)));
+        }
+        return true;
+    }
+
+    /*!
+    @return a string representation of the last read byte
+    */
+    std::string get_token_string() const
+    {
+        std::array<char, 3> cr{{}};
+        (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current));
+        return std::string{cr.data()};
+    }
+
+    /*!
+    @param[in] format   the current format
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return a message string to use in the parse_error exceptions
+    */
+    std::string exception_message(const input_format_t format,
+                                  const std::string& detail,
+                                  const std::string& context) const
+    {
+        std::string error_msg = "syntax error while parsing ";
+
+        switch (format)
+        {
+            case input_format_t::cbor:
+                error_msg += "CBOR";
+                break;
+
+            case input_format_t::msgpack:
+                error_msg += "MessagePack";
+                break;
+
+            case input_format_t::ubjson:
+                error_msg += "UBJSON";
+                break;
+
+            case input_format_t::bson:
+                error_msg += "BSON";
+                break;
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false);  // LCOV_EXCL_LINE
+        }
+
+        return error_msg + " " + context + ": " + detail;
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// the number of characters read
+    std::size_t chars_read = 0;
+
+    /// whether we can assume little endianess
+    const bool is_little_endian = little_endianess();
+
+    /// the SAX parser
+    json_sax_t* sax = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/input/parser.hpp>
+
+
+#include <cmath> // isfinite
+#include <cstdint> // uint8_t
+#include <functional> // function
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+////////////
+// parser //
+////////////
+
+enum class parse_event_t : uint8_t
+{
+    /// the parser read `{` and started to process a JSON object
+    object_start,
+    /// the parser read `}` and finished processing a JSON object
+    object_end,
+    /// the parser read `[` and started to process a JSON array
+    array_start,
+    /// the parser read `]` and finished processing a JSON array
+    array_end,
+    /// the parser read a key of a value in an object
+    key,
+    /// the parser finished reading a JSON value
+    value
+};
+
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int depth, parse_event_t event, BasicJsonType& parsed)>;
+
+/*!
+@brief syntax analysis
+
+This class implements a recursive descent parser.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class parser
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using token_type = typename lexer_t::token_type;
+
+  public:
+    /// a parser reading from an input adapter
+    explicit parser(InputAdapterType&& adapter,
+                    const parser_callback_t<BasicJsonType> cb = nullptr,
+                    const bool allow_exceptions_ = true,
+                    const bool skip_comments = false)
+        : callback(cb)
+        , m_lexer(std::move(adapter), skip_comments)
+        , allow_exceptions(allow_exceptions_)
+    {
+        // read first token
+        get_token();
+    }
+
+    /*!
+    @brief public parser interface
+
+    @param[in] strict      whether to expect the last token to be EOF
+    @param[in,out] result  parsed JSON value
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    void parse(const bool strict, BasicJsonType& result)
+    {
+        if (callback)
+        {
+            json_sax_dom_callback_parser<BasicJsonType> sdp(result, callback, allow_exceptions);
+            sax_parse_internal(&sdp);
+            result.assert_invariant();
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value")));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+
+            // set top-level value to null if it was discarded by the callback
+            // function
+            if (result.is_discarded())
+            {
+                result = nullptr;
+            }
+        }
+        else
+        {
+            json_sax_dom_parser<BasicJsonType> sdp(result, allow_exceptions);
+            sax_parse_internal(&sdp);
+            result.assert_invariant();
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value")));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+        }
+    }
+
+    /*!
+    @brief public accept interface
+
+    @param[in] strict  whether to expect the last token to be EOF
+    @return whether the input is a proper JSON text
+    */
+    bool accept(const bool strict = true)
+    {
+        json_sax_acceptor<BasicJsonType> sax_acceptor;
+        return sax_parse(&sax_acceptor, strict);
+    }
+
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse(SAX* sax, const bool strict = true)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        const bool result = sax_parse_internal(sax);
+
+        // strict mode: next byte must be EOF
+        if (result && strict && (get_token() != token_type::end_of_input))
+        {
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(),
+                                            exception_message(token_type::end_of_input, "value")));
+        }
+
+        return result;
+    }
+
+  private:
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse_internal(SAX* sax)
+    {
+        // stack to remember the hierarchy of structured values we are parsing
+        // true = array; false = object
+        std::vector<bool> states;
+        // value to avoid a goto (see comment where set to true)
+        bool skip_to_state_evaluation = false;
+
+        while (true)
+        {
+            if (!skip_to_state_evaluation)
+            {
+                // invariant: get_token() was called before each iteration
+                switch (last_token)
+                {
+                    case token_type::begin_object:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(std::size_t(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing } -> we are done
+                        if (get_token() == token_type::end_object)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // parse key
+                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(),
+                                                            exception_message(token_type::value_string, "object key")));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        // parse separator (:)
+                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(),
+                                                            exception_message(token_type::name_separator, "object separator")));
+                        }
+
+                        // remember we are now inside an object
+                        states.push_back(false);
+
+                        // parse values
+                        get_token();
+                        continue;
+                    }
+
+                    case token_type::begin_array:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(std::size_t(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing ] -> we are done
+                        if (get_token() == token_type::end_array)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // remember we are now inside an array
+                        states.push_back(true);
+
+                        // parse values (no need to call get_token)
+                        continue;
+                    }
+
+                    case token_type::value_float:
+                    {
+                        const auto res = m_lexer.get_number_float();
+
+                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    out_of_range::create(406, "number overflow parsing '" + m_lexer.get_token_string() + "'"));
+                        }
+
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        break;
+                    }
+
+                    case token_type::literal_false:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_null:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_true:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_integer:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_string:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_unsigned:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::parse_error:
+                    {
+                        // using "uninitialized" to avoid "expected" message
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(),
+                                                        exception_message(token_type::uninitialized, "value")));
+                    }
+
+                    default: // the last token was unexpected
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(),
+                                                        exception_message(token_type::literal_or_value, "value")));
+                    }
+                }
+            }
+            else
+            {
+                skip_to_state_evaluation = false;
+            }
+
+            // we reached this line after we successfully parsed a value
+            if (states.empty())
+            {
+                // empty stack: we reached the end of the hierarchy: done
+                return true;
+            }
+
+            if (states.back())  // array
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse a new value
+                    get_token();
+                    continue;
+                }
+
+                // closing ]
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this array. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(),
+                                                exception_message(token_type::end_array, "array")));
+            }
+            else  // object
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse key
+                    if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(),
+                                                        exception_message(token_type::value_string, "object key")));
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                    {
+                        return false;
+                    }
+
+                    // parse separator (:)
+                    if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(),
+                                                        exception_message(token_type::name_separator, "object separator")));
+                    }
+
+                    // parse values
+                    get_token();
+                    continue;
+                }
+
+                // closing }
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this object. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(),
+                                                exception_message(token_type::end_object, "object")));
+            }
+        }
+    }
+
+    /// get next token from lexer
+    token_type get_token()
+    {
+        return last_token = m_lexer.scan();
+    }
+
+    std::string exception_message(const token_type expected, const std::string& context)
+    {
+        std::string error_msg = "syntax error ";
+
+        if (!context.empty())
+        {
+            error_msg += "while parsing " + context + " ";
+        }
+
+        error_msg += "- ";
+
+        if (last_token == token_type::parse_error)
+        {
+            error_msg += std::string(m_lexer.get_error_message()) + "; last read: '" +
+                         m_lexer.get_token_string() + "'";
+        }
+        else
+        {
+            error_msg += "unexpected " + std::string(lexer_t::token_type_name(last_token));
+        }
+
+        if (expected != token_type::uninitialized)
+        {
+            error_msg += "; expected " + std::string(lexer_t::token_type_name(expected));
+        }
+
+        return error_msg;
+    }
+
+  private:
+    /// callback function
+    const parser_callback_t<BasicJsonType> callback = nullptr;
+    /// the type of the last read token
+    token_type last_token = token_type::uninitialized;
+    /// the lexer
+    lexer_t m_lexer;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+
+#include <cstddef> // ptrdiff_t
+#include <limits>  // numeric_limits
+
+namespace nlohmann
+{
+namespace detail
+{
+/*
+@brief an iterator for primitive JSON types
+
+This class models an iterator for primitive JSON types (boolean, number,
+string). It's only purpose is to allow the iterator/const_iterator classes
+to "iterate" over primitive values. Internally, the iterator is modeled by
+a `difference_type` variable. Value begin_value (`0`) models the begin,
+end_value (`1`) models past the end.
+*/
+class primitive_iterator_t
+{
+  private:
+    using difference_type = std::ptrdiff_t;
+    static constexpr difference_type begin_value = 0;
+    static constexpr difference_type end_value = begin_value + 1;
+
+    /// iterator as signed integer type
+    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
+
+  public:
+    constexpr difference_type get_value() const noexcept
+    {
+        return m_it;
+    }
+
+    /// set iterator to a defined beginning
+    void set_begin() noexcept
+    {
+        m_it = begin_value;
+    }
+
+    /// set iterator to a defined past the end
+    void set_end() noexcept
+    {
+        m_it = end_value;
+    }
+
+    /// return whether the iterator can be dereferenced
+    constexpr bool is_begin() const noexcept
+    {
+        return m_it == begin_value;
+    }
+
+    /// return whether the iterator is at end
+    constexpr bool is_end() const noexcept
+    {
+        return m_it == end_value;
+    }
+
+    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it == rhs.m_it;
+    }
+
+    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it < rhs.m_it;
+    }
+
+    primitive_iterator_t operator+(difference_type n) noexcept
+    {
+        auto result = *this;
+        result += n;
+        return result;
+    }
+
+    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it - rhs.m_it;
+    }
+
+    primitive_iterator_t& operator++() noexcept
+    {
+        ++m_it;
+        return *this;
+    }
+
+    primitive_iterator_t const operator++(int) noexcept
+    {
+        auto result = *this;
+        ++m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator--() noexcept
+    {
+        --m_it;
+        return *this;
+    }
+
+    primitive_iterator_t const operator--(int) noexcept
+    {
+        auto result = *this;
+        --m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator+=(difference_type n) noexcept
+    {
+        m_it += n;
+        return *this;
+    }
+
+    primitive_iterator_t& operator-=(difference_type n) noexcept
+    {
+        m_it -= n;
+        return *this;
+    }
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/iter_impl.hpp>
+
+
+#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
+#include <type_traits> // conditional, is_const, remove_const
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+// forward declare, to be able to friend it later on
+template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType> class iteration_proxy_value;
+
+/*!
+@brief a template for a bidirectional iterator for the @ref basic_json class
+This class implements a both iterators (iterator and const_iterator) for the
+@ref basic_json class.
+@note An iterator is called *initialized* when a pointer to a JSON value has
+      been set (e.g., by a constructor or a copy assignment). If the iterator is
+      default-constructed, it is *uninitialized* and most methods are undefined.
+      **The library uses assertions to detect calls on uninitialized iterators.**
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
+       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
+*/
+template<typename BasicJsonType>
+class iter_impl
+{
+    /// allow basic_json to access private members
+    friend iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    friend BasicJsonType;
+    friend iteration_proxy<iter_impl>;
+    friend iteration_proxy_value<iter_impl>;
+
+    using object_t = typename BasicJsonType::object_t;
+    using array_t = typename BasicJsonType::array_t;
+    // make sure BasicJsonType is basic_json or const basic_json
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+                  "iter_impl only accepts (const) basic_json");
+
+  public:
+
+    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
+    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
+    /// A user-defined iterator should provide publicly accessible typedefs named
+    /// iterator_category, value_type, difference_type, pointer, and reference.
+    /// Note that value_type is required to be non-const, even for constant iterators.
+    using iterator_category = std::bidirectional_iterator_tag;
+
+    /// the type of the values when the iterator is dereferenced
+    using value_type = typename BasicJsonType::value_type;
+    /// a type to represent differences between iterators
+    using difference_type = typename BasicJsonType::difference_type;
+    /// defines a pointer to the type iterated over (value_type)
+    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+          typename BasicJsonType::const_pointer,
+          typename BasicJsonType::pointer>::type;
+    /// defines a reference to the type iterated over (value_type)
+    using reference =
+        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename BasicJsonType::const_reference,
+        typename BasicJsonType::reference>::type;
+
+    /// default constructor
+    iter_impl() = default;
+
+    /*!
+    @brief constructor for a given JSON instance
+    @param[in] object  pointer to a JSON object for this iterator
+    @pre object != nullptr
+    @post The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    explicit iter_impl(pointer object) noexcept : m_object(object)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = typename object_t::iterator();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = typename array_t::iterator();
+                break;
+            }
+
+            default:
+            {
+                m_it.primitive_iterator = primitive_iterator_t();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @note The conventional copy constructor and copy assignment are implicitly
+          defined. Combined with the following converting constructor and
+          assignment, they support: (1) copy from iterator to iterator, (2)
+          copy from const iterator to const iterator, and (3) conversion from
+          iterator to const iterator. However conversion from const iterator
+          to iterator is not defined.
+    */
+
+    /*!
+    @brief const copy constructor
+    @param[in] other const iterator to copy from
+    @note This copy constructor had to be defined explicitly to circumvent a bug
+          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
+          information refer to: https://github.com/nlohmann/json/issues/1608
+    */
+    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+    /*!
+    @brief converting constructor
+    @param[in] other  non-const iterator to copy from
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other  non-const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+  private:
+    /*!
+    @brief set the iterator to the first value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_begin() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_value.object->begin();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_value.array->begin();
+                break;
+            }
+
+            case value_t::null:
+            {
+                // set to end so begin()==end() is true: null is empty
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+
+            default:
+            {
+                m_it.primitive_iterator.set_begin();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @brief set the iterator past the last value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_end() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_value.object->end();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_value.array->end();
+                break;
+            }
+
+            default:
+            {
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+        }
+    }
+
+  public:
+    /*!
+    @brief return a reference to the value pointed to by the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator*() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_value.object->end());
+                return m_it.object_iterator->second;
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_value.array->end());
+                return *m_it.array_iterator;
+            }
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value"));
+
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value"));
+            }
+        }
+    }
+
+    /*!
+    @brief dereference the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    pointer operator->() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_value.object->end());
+                return &(m_it.object_iterator->second);
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_value.array->end());
+                return &*m_it.array_iterator;
+            }
+
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value"));
+            }
+        }
+    }
+
+    /*!
+    @brief post-increment (it++)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl const operator++(int)
+    {
+        auto result = *this;
+        ++(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-increment (++it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator++()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, 1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, 1);
+                break;
+            }
+
+            default:
+            {
+                ++m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief post-decrement (it--)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl const operator--(int)
+    {
+        auto result = *this;
+        --(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-decrement (--it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator--()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, -1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, -1);
+                break;
+            }
+
+            default:
+            {
+                --m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief  comparison: equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator==(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers"));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                return (m_it.object_iterator == other.m_it.object_iterator);
+
+            case value_t::array:
+                return (m_it.array_iterator == other.m_it.array_iterator);
+
+            default:
+                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief  comparison: not equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator!=(const iter_impl& other) const
+    {
+        return !operator==(other);
+    }
+
+    /*!
+    @brief  comparison: smaller
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers"));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators"));
+
+            case value_t::array:
+                return (m_it.array_iterator < other.m_it.array_iterator);
+
+            default:
+                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief  comparison: less than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<=(const iter_impl& other) const
+    {
+        return !other.operator < (*this);
+    }
+
+    /*!
+    @brief  comparison: greater than
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>(const iter_impl& other) const
+    {
+        return !operator<=(other);
+    }
+
+    /*!
+    @brief  comparison: greater than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>=(const iter_impl& other) const
+    {
+        return !operator<(other);
+    }
+
+    /*!
+    @brief  add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator+=(difference_type i)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators"));
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, i);
+                break;
+            }
+
+            default:
+            {
+                m_it.primitive_iterator += i;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief  subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator-=(difference_type i)
+    {
+        return operator+=(-i);
+    }
+
+    /*!
+    @brief  add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator+(difference_type i) const
+    {
+        auto result = *this;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief  addition of distance and iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    friend iter_impl operator+(difference_type i, const iter_impl& it)
+    {
+        auto result = it;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief  subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator-(difference_type i) const
+    {
+        auto result = *this;
+        result -= i;
+        return result;
+    }
+
+    /*!
+    @brief  return difference
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    difference_type operator-(const iter_impl& other) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators"));
+
+            case value_t::array:
+                return m_it.array_iterator - other.m_it.array_iterator;
+
+            default:
+                return m_it.primitive_iterator - other.m_it.primitive_iterator;
+        }
+    }
+
+    /*!
+    @brief  access to successor
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator[](difference_type n) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators"));
+
+            case value_t::array:
+                return *std::next(m_it.array_iterator, n);
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value"));
+
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value"));
+            }
+        }
+    }
+
+    /*!
+    @brief  return the key of an object iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    const typename object_t::key_type& key() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
+        {
+            return m_it.object_iterator->first;
+        }
+
+        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators"));
+    }
+
+    /*!
+    @brief  return the value of an iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference value() const
+    {
+        return operator*();
+    }
+
+  private:
+    /// associated JSON instance
+    pointer m_object = nullptr;
+    /// the actual iterator of the associated instance
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+};
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
+
+
+#include <cstddef> // ptrdiff_t
+#include <iterator> // reverse_iterator
+#include <utility> // declval
+
+namespace nlohmann
+{
+namespace detail
+{
+//////////////////////
+// reverse_iterator //
+//////////////////////
+
+/*!
+@brief a template for a reverse iterator class
+
+@tparam Base the base iterator type to reverse. Valid types are @ref
+iterator (to create @ref reverse_iterator) and @ref const_iterator (to
+create @ref const_reverse_iterator).
+
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
+  It is possible to write to the pointed-to element (only if @a Base is
+  @ref iterator).
+
+@since version 1.0.0
+*/
+template<typename Base>
+class json_reverse_iterator : public std::reverse_iterator<Base>
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    /// shortcut to the reverse iterator adapter
+    using base_iterator = std::reverse_iterator<Base>;
+    /// the reference type for the pointed-to element
+    using reference = typename Base::reference;
+
+    /// create reverse iterator from iterator
+    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
+        : base_iterator(it) {}
+
+    /// create reverse iterator from base class
+    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+
+    /// post-increment (it++)
+    json_reverse_iterator const operator++(int)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
+    }
+
+    /// pre-increment (++it)
+    json_reverse_iterator& operator++()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
+    }
+
+    /// post-decrement (it--)
+    json_reverse_iterator const operator--(int)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
+    }
+
+    /// pre-decrement (--it)
+    json_reverse_iterator& operator--()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
+    }
+
+    /// add to iterator
+    json_reverse_iterator& operator+=(difference_type i)
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
+    }
+
+    /// add to iterator
+    json_reverse_iterator operator+(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
+    }
+
+    /// subtract from iterator
+    json_reverse_iterator operator-(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
+    }
+
+    /// return difference
+    difference_type operator-(const json_reverse_iterator& other) const
+    {
+        return base_iterator(*this) - base_iterator(other);
+    }
+
+    /// access to successor
+    reference operator[](difference_type n) const
+    {
+        return *(this->operator+(n));
+    }
+
+    /// return the key of an object iterator
+    auto key() const -> decltype(std::declval<Base>().key())
+    {
+        auto it = --this->base();
+        return it.key();
+    }
+
+    /// return the value of an iterator
+    reference value() const
+    {
+        auto it = --this->base();
+        return it.operator * ();
+    }
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/json_pointer.hpp>
+
+
+#include <algorithm> // all_of
+#include <cctype> // isdigit
+#include <limits> // max
+#include <numeric> // accumulate
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+template<typename BasicJsonType>
+class json_pointer
+{
+    // allow basic_json to access private members
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    friend class basic_json;
+
+  public:
+    /*!
+    @brief create JSON pointer
+
+    Create a JSON pointer according to the syntax described in
+    [Section 3 of RFC6901](https://tools.ietf.org/html/rfc6901#section-3).
+
+    @param[in] s  string representing the JSON pointer; if omitted, the empty
+                  string is assumed which references the whole JSON value
+
+    @throw parse_error.107 if the given JSON pointer @a s is nonempty and does
+                           not begin with a slash (`/`); see example below
+
+    @throw parse_error.108 if a tilde (`~`) in the given JSON pointer @a s is
+    not followed by `0` (representing `~`) or `1` (representing `/`); see
+    example below
+
+    @liveexample{The example shows the construction several valid JSON pointers
+    as well as the exceptional behavior.,json_pointer}
+
+    @since version 2.0.0
+    */
+    explicit json_pointer(const std::string& s = "")
+        : reference_tokens(split(s))
+    {}
+
+    /*!
+    @brief return a string representation of the JSON pointer
+
+    @invariant For each JSON pointer `ptr`, it holds:
+    @code {.cpp}
+    ptr == json_pointer(ptr.to_string());
+    @endcode
+
+    @return a string representation of the JSON pointer
+
+    @liveexample{The example shows the result of `to_string`.,json_pointer__to_string}
+
+    @since version 2.0.0
+    */
+    std::string to_string() const
+    {
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+                               std::string{},
+                               [](const std::string & a, const std::string & b)
+        {
+            return a + "/" + escape(b);
+        });
+    }
+
+    /// @copydoc to_string()
+    operator std::string() const
+    {
+        return to_string();
+    }
+
+    /*!
+    @brief append another JSON pointer at the end of this JSON pointer
+
+    @param[in] ptr  JSON pointer to append
+    @return JSON pointer with @a ptr appended
+
+    @liveexample{The example shows the usage of `operator/=`.,json_pointer__operator_add}
+
+    @complexity Linear in the length of @a ptr.
+
+    @sa @ref operator/=(std::string) to append a reference token
+    @sa @ref operator/=(std::size_t) to append an array index
+    @sa @ref operator/(const json_pointer&, const json_pointer&) for a binary operator
+
+    @since version 3.6.0
+    */
+    json_pointer& operator/=(const json_pointer& ptr)
+    {
+        reference_tokens.insert(reference_tokens.end(),
+                                ptr.reference_tokens.begin(),
+                                ptr.reference_tokens.end());
+        return *this;
+    }
+
+    /*!
+    @brief append an unescaped reference token at the end of this JSON pointer
+
+    @param[in] token  reference token to append
+    @return JSON pointer with @a token appended without escaping @a token
+
+    @liveexample{The example shows the usage of `operator/=`.,json_pointer__operator_add}
+
+    @complexity Amortized constant.
+
+    @sa @ref operator/=(const json_pointer&) to append a JSON pointer
+    @sa @ref operator/=(std::size_t) to append an array index
+    @sa @ref operator/(const json_pointer&, std::size_t) for a binary operator
+
+    @since version 3.6.0
+    */
+    json_pointer& operator/=(std::string token)
+    {
+        push_back(std::move(token));
+        return *this;
+    }
+
+    /*!
+    @brief append an array index at the end of this JSON pointer
+
+    @param[in] array_idx  array index to append
+    @return JSON pointer with @a array_idx appended
+
+    @liveexample{The example shows the usage of `operator/=`.,json_pointer__operator_add}
+
+    @complexity Amortized constant.
+
+    @sa @ref operator/=(const json_pointer&) to append a JSON pointer
+    @sa @ref operator/=(std::string) to append a reference token
+    @sa @ref operator/(const json_pointer&, std::string) for a binary operator
+
+    @since version 3.6.0
+    */
+    json_pointer& operator/=(std::size_t array_idx)
+    {
+        return *this /= std::to_string(array_idx);
+    }
+
+    /*!
+    @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+
+    @param[in] lhs  JSON pointer
+    @param[in] rhs  JSON pointer
+    @return a new JSON pointer with @a rhs appended to @a lhs
+
+    @liveexample{The example shows the usage of `operator/`.,json_pointer__operator_add_binary}
+
+    @complexity Linear in the length of @a lhs and @a rhs.
+
+    @sa @ref operator/=(const json_pointer&) to append a JSON pointer
+
+    @since version 3.6.0
+    */
+    friend json_pointer operator/(const json_pointer& lhs,
+                                  const json_pointer& rhs)
+    {
+        return json_pointer(lhs) /= rhs;
+    }
+
+    /*!
+    @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+
+    @param[in] ptr  JSON pointer
+    @param[in] token  reference token
+    @return a new JSON pointer with unescaped @a token appended to @a ptr
+
+    @liveexample{The example shows the usage of `operator/`.,json_pointer__operator_add_binary}
+
+    @complexity Linear in the length of @a ptr.
+
+    @sa @ref operator/=(std::string) to append a reference token
+
+    @since version 3.6.0
+    */
+    friend json_pointer operator/(const json_pointer& ptr, std::string token)
+    {
+        return json_pointer(ptr) /= std::move(token);
+    }
+
+    /*!
+    @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+
+    @param[in] ptr  JSON pointer
+    @param[in] array_idx  array index
+    @return a new JSON pointer with @a array_idx appended to @a ptr
+
+    @liveexample{The example shows the usage of `operator/`.,json_pointer__operator_add_binary}
+
+    @complexity Linear in the length of @a ptr.
+
+    @sa @ref operator/=(std::size_t) to append an array index
+
+    @since version 3.6.0
+    */
+    friend json_pointer operator/(const json_pointer& ptr, std::size_t array_idx)
+    {
+        return json_pointer(ptr) /= array_idx;
+    }
+
+    /*!
+    @brief returns the parent of this JSON pointer
+
+    @return parent of this JSON pointer; in case this JSON pointer is the root,
+            the root itself is returned
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @liveexample{The example shows the result of `parent_pointer` for different
+    JSON Pointers.,json_pointer__parent_pointer}
+
+    @since version 3.6.0
+    */
+    json_pointer parent_pointer() const
+    {
+        if (empty())
+        {
+            return *this;
+        }
+
+        json_pointer res = *this;
+        res.pop_back();
+        return res;
+    }
+
+    /*!
+    @brief remove last reference token
+
+    @pre not `empty()`
+
+    @liveexample{The example shows the usage of `pop_back`.,json_pointer__pop_back}
+
+    @complexity Constant.
+
+    @throw out_of_range.405 if JSON pointer has no parent
+
+    @since version 3.6.0
+    */
+    void pop_back()
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent"));
+        }
+
+        reference_tokens.pop_back();
+    }
+
+    /*!
+    @brief return last reference token
+
+    @pre not `empty()`
+    @return last reference token
+
+    @liveexample{The example shows the usage of `back`.,json_pointer__back}
+
+    @complexity Constant.
+
+    @throw out_of_range.405 if JSON pointer has no parent
+
+    @since version 3.6.0
+    */
+    const std::string& back() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent"));
+        }
+
+        return reference_tokens.back();
+    }
+
+    /*!
+    @brief append an unescaped token at the end of the reference pointer
+
+    @param[in] token  token to add
+
+    @complexity Amortized constant.
+
+    @liveexample{The example shows the result of `push_back` for different
+    JSON Pointers.,json_pointer__push_back}
+
+    @since version 3.6.0
+    */
+    void push_back(const std::string& token)
+    {
+        reference_tokens.push_back(token);
+    }
+
+    /// @copydoc push_back(const std::string&)
+    void push_back(std::string&& token)
+    {
+        reference_tokens.push_back(std::move(token));
+    }
+
+    /*!
+    @brief return whether pointer points to the root document
+
+    @return true iff the JSON pointer points to the root document
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example shows the result of `empty` for different JSON
+    Pointers.,json_pointer__empty}
+
+    @since version 3.6.0
+    */
+    bool empty() const noexcept
+    {
+        return reference_tokens.empty();
+    }
+
+  private:
+    /*!
+    @param[in] s  reference token to be converted into an array index
+
+    @return integer representation of @a s
+
+    @throw parse_error.106  if an array index begins with '0'
+    @throw parse_error.109  if an array index begins not with a digit
+    @throw out_of_range.404 if string @a s could not be converted to an integer
+    @throw out_of_range.410 if an array index exceeds size_type
+    */
+    static typename BasicJsonType::size_type array_index(const std::string& s)
+    {
+        using size_type = typename BasicJsonType::size_type;
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
+        {
+            JSON_THROW(detail::parse_error::create(106, 0,
+                                                   "array index '" + s +
+                                                   "' must not begin with '0'"));
+        }
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
+        {
+            JSON_THROW(detail::parse_error::create(109, 0, "array index '" + s + "' is not a number"));
+        }
+
+        std::size_t processed_chars = 0;
+        unsigned long long res = 0;
+        JSON_TRY
+        {
+            res = std::stoull(s, &processed_chars);
+        }
+        JSON_CATCH(std::out_of_range&)
+        {
+            JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + s + "'"));
+        }
+
+        // check if the string was completely read
+        if (JSON_HEDLEY_UNLIKELY(processed_chars != s.size()))
+        {
+            JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + s + "'"));
+        }
+
+        // only triggered on special platforms (like 32bit), see also
+        // https://github.com/nlohmann/json/pull/2203
+        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))
+        {
+            JSON_THROW(detail::out_of_range::create(410, "array index " + s + " exceeds size_type")); // LCOV_EXCL_LINE
+        }
+
+        return static_cast<size_type>(res);
+    }
+
+    json_pointer top() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent"));
+        }
+
+        json_pointer result = *this;
+        result.reference_tokens = {reference_tokens[0]};
+        return result;
+    }
+
+    /*!
+    @brief create and return a reference to the pointed to value
+
+    @complexity Linear in the number of reference tokens.
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.313 if value cannot be unflattened
+    */
+    BasicJsonType& get_and_create(BasicJsonType& j) const
+    {
+        auto result = &j;
+
+        // in case no reference tokens exist, return a reference to the JSON value
+        // j which will be overwritten by a primitive value
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (result->type())
+            {
+                case detail::value_t::null:
+                {
+                    if (reference_token == "0")
+                    {
+                        // start a new array if reference token is 0
+                        result = &result->operator[](0);
+                    }
+                    else
+                    {
+                        // start a new object otherwise
+                        result = &result->operator[](reference_token);
+                    }
+                    break;
+                }
+
+                case detail::value_t::object:
+                {
+                    // create an entry in the object
+                    result = &result->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    // create an entry in the array
+                    result = &result->operator[](array_index(reference_token));
+                    break;
+                }
+
+                /*
+                The following code is only reached if there exists a reference
+                token _and_ the current value is primitive. In this case, we have
+                an error situation, because primitive values may only occur as
+                single value; that is, with an empty list of reference tokens.
+                */
+                default:
+                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten"));
+            }
+        }
+
+        return *result;
+    }
+
+    /*!
+    @brief return a reference to the pointed to value
+
+    @note This version does not throw if a value is not present, but tries to
+          create nested values instead. For instance, calling this function
+          with pointer `"/this/that"` on a null value is equivalent to calling
+          `operator[]("this").operator[]("that")` on that value, effectively
+          changing the null value to an object.
+
+    @param[in] ptr  a JSON value
+
+    @return reference to the JSON value pointed to by the JSON pointer
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            // convert null values to arrays or objects before continuing
+            if (ptr->is_null())
+            {
+                // check if reference token is a number
+                const bool nums =
+                    std::all_of(reference_token.begin(), reference_token.end(),
+                                [](const unsigned char x)
+                {
+                    return std::isdigit(x);
+                });
+
+                // change value to array for numbers or "-" or to object otherwise
+                *ptr = (nums || reference_token == "-")
+                       ? detail::value_t::array
+                       : detail::value_t::object;
+            }
+
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (reference_token == "-")
+                    {
+                        // explicitly treat "-" as index beyond the end
+                        ptr = &ptr->operator[](ptr->m_value.array->size());
+                    }
+                    else
+                    {
+                        // convert array index to number; unchecked access
+                        ptr = &ptr->operator[](array_index(reference_token));
+                    }
+                    break;
+                }
+
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'"));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    BasicJsonType& get_checked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402,
+                                                                "array index '-' (" + std::to_string(ptr->m_value.array->size()) +
+                                                                ") is out of range"));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index(reference_token));
+                    break;
+                }
+
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'"));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @brief return a const reference to the pointed to value
+
+    @param[in] ptr  a JSON value
+
+    @return const reference to the JSON value pointed to by the JSON
+    pointer
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" cannot be used for const access
+                        JSON_THROW(detail::out_of_range::create(402,
+                                                                "array index '-' (" + std::to_string(ptr->m_value.array->size()) +
+                                                                ") is out of range"));
+                    }
+
+                    // use unchecked array access
+                    ptr = &ptr->operator[](array_index(reference_token));
+                    break;
+                }
+
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'"));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402,
+                                                                "array index '-' (" + std::to_string(ptr->m_value.array->size()) +
+                                                                ") is out of range"));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index(reference_token));
+                    break;
+                }
+
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'"));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    */
+    bool contains(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    if (!ptr->contains(reference_token))
+                    {
+                        // we did not find the key in the object
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
+                    {
+                        // invalid char
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
+                        {
+                            // first char should be between '1' and '9'
+                            return false;
+                        }
+                        for (std::size_t i = 1; i < reference_token.size(); i++)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
+                            {
+                                // other char should be between '0' and '9'
+                                return false;
+                            }
+                        }
+                    }
+
+                    const auto idx = array_index(reference_token);
+                    if (idx >= ptr->size())
+                    {
+                        // index out of range
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](idx);
+                    break;
+                }
+
+                default:
+                {
+                    // we do not expect primitive values if there is still a
+                    // reference token to process
+                    return false;
+                }
+            }
+        }
+
+        // no reference token left means we found a primitive value
+        return true;
+    }
+
+    /*!
+    @brief split the string input to reference tokens
+
+    @note This function is only called by the json_pointer constructor.
+          All exceptions below are documented there.
+
+    @throw parse_error.107  if the pointer is not empty or begins with '/'
+    @throw parse_error.108  if character '~' is not followed by '0' or '1'
+    */
+    static std::vector<std::string> split(const std::string& reference_string)
+    {
+        std::vector<std::string> result;
+
+        // special case: empty reference string -> no reference tokens
+        if (reference_string.empty())
+        {
+            return result;
+        }
+
+        // check if nonempty reference string begins with slash
+        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
+        {
+            JSON_THROW(detail::parse_error::create(107, 1,
+                                                   "JSON pointer must be empty or begin with '/' - was: '" +
+                                                   reference_string + "'"));
+        }
+
+        // extract the reference tokens:
+        // - slash: position of the last read slash (or end of string)
+        // - start: position after the previous slash
+        for (
+            // search for the first slash after the first character
+            std::size_t slash = reference_string.find_first_of('/', 1),
+            // set the beginning of the first reference token
+            start = 1;
+            // we can stop if start == 0 (if slash == std::string::npos)
+            start != 0;
+            // set the beginning of the next reference token
+            // (will eventually be 0 if slash == std::string::npos)
+            start = (slash == std::string::npos) ? 0 : slash + 1,
+            // find next slash
+            slash = reference_string.find_first_of('/', start))
+        {
+            // use the text between the beginning of the reference token
+            // (start) and the last slash (slash).
+            auto reference_token = reference_string.substr(start, slash - start);
+
+            // check reference tokens are properly escaped
+            for (std::size_t pos = reference_token.find_first_of('~');
+                    pos != std::string::npos;
+                    pos = reference_token.find_first_of('~', pos + 1))
+            {
+                JSON_ASSERT(reference_token[pos] == '~');
+
+                // ~ must be followed by 0 or 1
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                                         (reference_token[pos + 1] != '0' &&
+                                          reference_token[pos + 1] != '1')))
+                {
+                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'"));
+                }
+            }
+
+            // finally, store the reference token
+            unescape(reference_token);
+            result.push_back(reference_token);
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief replace all occurrences of a substring by another string
+
+    @param[in,out] s  the string to manipulate; changed so that all
+                   occurrences of @a f are replaced with @a t
+    @param[in]     f  the substring to replace with @a t
+    @param[in]     t  the string to replace @a f
+
+    @pre The search string @a f must not be empty. **This precondition is
+    enforced with an assertion.**
+
+    @since version 2.0.0
+    */
+    static void replace_substring(std::string& s, const std::string& f,
+                                  const std::string& t)
+    {
+        JSON_ASSERT(!f.empty());
+        for (auto pos = s.find(f);                // find first occurrence of f
+                pos != std::string::npos;         // make sure f was found
+                s.replace(pos, f.size(), t),      // replace with t, and
+                pos = s.find(f, pos + t.size()))  // find next occurrence of f
+        {}
+    }
+
+    /// escape "~" to "~0" and "/" to "~1"
+    static std::string escape(std::string s)
+    {
+        replace_substring(s, "~", "~0");
+        replace_substring(s, "/", "~1");
+        return s;
+    }
+
+    /// unescape "~1" to tilde and "~0" to slash (order is important!)
+    static void unescape(std::string& s)
+    {
+        replace_substring(s, "~1", "/");
+        replace_substring(s, "~0", "~");
+    }
+
+    /*!
+    @param[in] reference_string  the reference string to the current value
+    @param[in] value             the value to consider
+    @param[in,out] result        the result object to insert values to
+
+    @note Empty objects or arrays are flattened to `null`.
+    */
+    static void flatten(const std::string& reference_string,
+                        const BasicJsonType& value,
+                        BasicJsonType& result)
+    {
+        switch (value.type())
+        {
+            case detail::value_t::array:
+            {
+                if (value.m_value.array->empty())
+                {
+                    // flatten empty array as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate array and use index as reference string
+                    for (std::size_t i = 0; i < value.m_value.array->size(); ++i)
+                    {
+                        flatten(reference_string + "/" + std::to_string(i),
+                                value.m_value.array->operator[](i), result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::object:
+            {
+                if (value.m_value.object->empty())
+                {
+                    // flatten empty object as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate object and use keys as reference string
+                    for (const auto& element : *value.m_value.object)
+                    {
+                        flatten(reference_string + "/" + escape(element.first), element.second, result);
+                    }
+                }
+                break;
+            }
+
+            default:
+            {
+                // add primitive value with its reference string
+                result[reference_string] = value;
+                break;
+            }
+        }
+    }
+
+    /*!
+    @param[in] value  flattened JSON
+
+    @return unflattened JSON
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+    @throw type_error.313  if value cannot be unflattened
+    */
+    static BasicJsonType
+    unflatten(const BasicJsonType& value)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
+        {
+            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened"));
+        }
+
+        BasicJsonType result;
+
+        // iterate the JSON object values
+        for (const auto& element : *value.m_value.object)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
+            {
+                JSON_THROW(detail::type_error::create(315, "values in object must be primitive"));
+            }
+
+            // assign value to reference pointed to by JSON pointer; Note that if
+            // the JSON pointer is "" (i.e., points to the whole value), function
+            // get_and_create returns a reference to result itself. An assignment
+            // will then create a primitive value.
+            json_pointer(element.first).get_and_create(result) = element.second;
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief compares two JSON pointers for equality
+
+    @param[in] lhs  JSON pointer to compare
+    @param[in] rhs  JSON pointer to compare
+    @return whether @a lhs is equal to @a rhs
+
+    @complexity Linear in the length of the JSON pointer
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+    */
+    friend bool operator==(json_pointer const& lhs,
+                           json_pointer const& rhs) noexcept
+    {
+        return lhs.reference_tokens == rhs.reference_tokens;
+    }
+
+    /*!
+    @brief compares two JSON pointers for inequality
+
+    @param[in] lhs  JSON pointer to compare
+    @param[in] rhs  JSON pointer to compare
+    @return whether @a lhs is not equal @a rhs
+
+    @complexity Linear in the length of the JSON pointer
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+    */
+    friend bool operator!=(json_pointer const& lhs,
+                           json_pointer const& rhs) noexcept
+    {
+        return !(lhs == rhs);
+    }
+
+    /// the reference tokens
+    std::vector<std::string> reference_tokens;
+};
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/json_ref.hpp>
+
+
+#include <initializer_list>
+#include <utility>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename BasicJsonType>
+class json_ref
+{
+  public:
+    using value_type = BasicJsonType;
+
+    json_ref(value_type&& value)
+        : owned_value(std::move(value))
+        , value_ref(&owned_value)
+        , is_rvalue(true)
+    {}
+
+    json_ref(const value_type& value)
+        : value_ref(const_cast<value_type*>(&value))
+        , is_rvalue(false)
+    {}
+
+    json_ref(std::initializer_list<json_ref> init)
+        : owned_value(init)
+        , value_ref(&owned_value)
+        , is_rvalue(true)
+    {}
+
+    template <
+        class... Args,
+        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
+    json_ref(Args && ... args)
+        : owned_value(std::forward<Args>(args)...)
+        , value_ref(&owned_value)
+        , is_rvalue(true)
+    {}
+
+    // class should be movable only
+    json_ref(json_ref&&) = default;
+    json_ref(const json_ref&) = delete;
+    json_ref& operator=(const json_ref&) = delete;
+    json_ref& operator=(json_ref&&) = delete;
+    ~json_ref() = default;
+
+    value_type moved_or_copied() const
+    {
+        if (is_rvalue)
+        {
+            return std::move(*value_ref);
+        }
+        return *value_ref;
+    }
+
+    value_type const& operator*() const
+    {
+        return *static_cast<value_type const*>(value_ref);
+    }
+
+    value_type const* operator->() const
+    {
+        return static_cast<value_type const*>(value_ref);
+    }
+
+  private:
+    mutable value_type owned_value = nullptr;
+    value_type* value_ref = nullptr;
+    const bool is_rvalue = true;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+
+#include <algorithm> // reverse
+#include <array> // array
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstring> // memcpy
+#include <limits> // numeric_limits
+#include <string> // string
+#include <cmath> // isnan, isinf
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+
+#include <algorithm> // copy
+#include <cstddef> // size_t
+#include <ios> // streamsize
+#include <iterator> // back_inserter
+#include <memory> // shared_ptr, make_shared
+#include <ostream> // basic_ostream
+#include <string> // basic_string
+#include <vector> // vector
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/// abstract output adapter interface
+template<typename CharType> struct output_adapter_protocol
+{
+    virtual void write_character(CharType c) = 0;
+    virtual void write_characters(const CharType* s, std::size_t length) = 0;
+    virtual ~output_adapter_protocol() = default;
+};
+
+/// a type to simplify interfaces
+template<typename CharType>
+using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
+
+/// output adapter for byte vectors
+template<typename CharType>
+class output_vector_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_vector_adapter(std::vector<CharType>& vec) noexcept
+        : v(vec)
+    {}
+
+    void write_character(CharType c) override
+    {
+        v.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        std::copy(s, s + length, std::back_inserter(v));
+    }
+
+  private:
+    std::vector<CharType>& v;
+};
+
+/// output adapter for output streams
+template<typename CharType>
+class output_stream_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
+        : stream(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        stream.put(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        stream.write(s, static_cast<std::streamsize>(length));
+    }
+
+  private:
+    std::basic_ostream<CharType>& stream;
+};
+
+/// output adapter for basic_string
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_string_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_string_adapter(StringType& s) noexcept
+        : str(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        str.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        str.append(s, length);
+    }
+
+  private:
+    StringType& str;
+};
+
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_adapter
+{
+  public:
+    output_adapter(std::vector<CharType>& vec)
+        : oa(std::make_shared<output_vector_adapter<CharType>>(vec)) {}
+
+    output_adapter(std::basic_ostream<CharType>& s)
+        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+
+    output_adapter(StringType& s)
+        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+
+    operator output_adapter_t<CharType>()
+    {
+        return oa;
+    }
+
+  private:
+    output_adapter_t<CharType> oa = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////
+// binary writer //
+///////////////////
+
+/*!
+@brief serialization to CBOR and MessagePack values
+*/
+template<typename BasicJsonType, typename CharType>
+class binary_writer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+  public:
+    /*!
+    @brief create a binary writer
+
+    @param[in] adapter  output adapter to write to
+    */
+    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(adapter)
+    {
+        JSON_ASSERT(oa);
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+            {
+                write_bson_object(*j.m_value.object);
+                break;
+            }
+
+            default:
+            {
+                JSON_THROW(type_error::create(317, "to serialize to BSON, top-level type must be object, but is " + std::string(j.type_name())));
+            }
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_cbor(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                oa->write_character(to_char_type(0xF6));
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                oa->write_character(j.m_value.boolean
+                                    ? to_char_type(0xF5)
+                                    : to_char_type(0xF4));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_value.number_integer >= 0)
+                {
+                    // CBOR does not differentiate between positive signed
+                    // integers and unsigned integers. Therefore, we used the
+                    // code from the value_t::number_unsigned case here.
+                    if (j.m_value.number_integer <= 0x17)
+                    {
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x18));
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x19));
+                        write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x1A));
+                        write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x1B));
+                        write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    // The conversions below encode the sign in the first
+                    // byte, and the value is converted to a positive number.
+                    const auto positive_number = -1 - j.m_value.number_integer;
+                    if (j.m_value.number_integer >= -24)
+                    {
+                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x38));
+                        write_number(static_cast<std::uint8_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x39));
+                        write_number(static_cast<std::uint16_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x3A));
+                        write_number(static_cast<std::uint32_t>(positive_number));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x3B));
+                        write_number(static_cast<std::uint64_t>(positive_number));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x18));
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x19));
+                    write_number(static_cast<std::uint16_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x1A));
+                    write_number(static_cast<std::uint32_t>(j.m_value.number_unsigned));
+                }
+                else
+                {
+                    oa->write_character(to_char_type(0x1B));
+                    write_number(static_cast<std::uint64_t>(j.m_value.number_unsigned));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                if (std::isnan(j.m_value.number_float))
+                {
+                    // NaN is 0xf97e00 in CBOR
+                    oa->write_character(to_char_type(0xF9));
+                    oa->write_character(to_char_type(0x7E));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else if (std::isinf(j.m_value.number_float))
+                {
+                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
+                    oa->write_character(to_char_type(0xf9));
+                    oa->write_character(j.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else
+                {
+                    write_compact_float(j.m_value.number_float, detail::input_format_t::cbor);
+                }
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_value.string->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x60 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x78));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x79));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_value.array->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x80 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x98));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x99));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_cbor(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (j.m_value.binary->has_subtype())
+                {
+                    write_number(static_cast<std::uint8_t>(0xd8));
+                    write_number(j.m_value.binary->subtype());
+                }
+
+                // step 1: write control byte and the binary array size
+                const auto N = j.m_value.binary->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x40 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x58));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x59));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_value.object->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0xA0 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB8));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB9));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBA));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBB));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_cbor(el.first);
+                    write_cbor(el.second);
+                }
+                break;
+            }
+
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_msgpack(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null: // nil
+            {
+                oa->write_character(to_char_type(0xC0));
+                break;
+            }
+
+            case value_t::boolean: // true and false
+            {
+                oa->write_character(j.m_value.boolean
+                                    ? to_char_type(0xC3)
+                                    : to_char_type(0xC2));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_value.number_integer >= 0)
+                {
+                    // MessagePack does not differentiate between positive
+                    // signed integers and unsigned integers. Therefore, we used
+                    // the code from the value_t::number_unsigned case here.
+                    if (j.m_value.number_unsigned < 128)
+                    {
+                        // positive fixnum
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        // uint 8
+                        oa->write_character(to_char_type(0xCC));
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        // uint 16
+                        oa->write_character(to_char_type(0xCD));
+                        write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        // uint 32
+                        oa->write_character(to_char_type(0xCE));
+                        write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        // uint 64
+                        oa->write_character(to_char_type(0xCF));
+                        write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    if (j.m_value.number_integer >= -32)
+                    {
+                        // negative fixnum
+                        write_number(static_cast<std::int8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                    {
+                        // int 8
+                        oa->write_character(to_char_type(0xD0));
+                        write_number(static_cast<std::int8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                    {
+                        // int 16
+                        oa->write_character(to_char_type(0xD1));
+                        write_number(static_cast<std::int16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                    {
+                        // int 32
+                        oa->write_character(to_char_type(0xD2));
+                        write_number(static_cast<std::int32_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                    {
+                        // int 64
+                        oa->write_character(to_char_type(0xD3));
+                        write_number(static_cast<std::int64_t>(j.m_value.number_integer));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned < 128)
+                {
+                    // positive fixnum
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // uint 8
+                    oa->write_character(to_char_type(0xCC));
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // uint 16
+                    oa->write_character(to_char_type(0xCD));
+                    write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // uint 32
+                    oa->write_character(to_char_type(0xCE));
+                    write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    // uint 64
+                    oa->write_character(to_char_type(0xCF));
+                    write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_compact_float(j.m_value.number_float, detail::input_format_t::msgpack);
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_value.string->size();
+                if (N <= 31)
+                {
+                    // fixstr
+                    write_number(static_cast<std::uint8_t>(0xA0 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // str 8
+                    oa->write_character(to_char_type(0xD9));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // str 16
+                    oa->write_character(to_char_type(0xDA));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // str 32
+                    oa->write_character(to_char_type(0xDB));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_value.array->size();
+                if (N <= 15)
+                {
+                    // fixarray
+                    write_number(static_cast<std::uint8_t>(0x90 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // array 16
+                    oa->write_character(to_char_type(0xDC));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // array 32
+                    oa->write_character(to_char_type(0xDD));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_msgpack(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                // step 0: determine if the binary type has a set subtype to
+                // determine whether or not to use the ext or fixext types
+                const bool use_ext = j.m_value.binary->has_subtype();
+
+                // step 1: write control byte and the byte string length
+                const auto N = j.m_value.binary->size();
+                if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    std::uint8_t output_type{};
+                    bool fixed = true;
+                    if (use_ext)
+                    {
+                        switch (N)
+                        {
+                            case 1:
+                                output_type = 0xD4; // fixext 1
+                                break;
+                            case 2:
+                                output_type = 0xD5; // fixext 2
+                                break;
+                            case 4:
+                                output_type = 0xD6; // fixext 4
+                                break;
+                            case 8:
+                                output_type = 0xD7; // fixext 8
+                                break;
+                            case 16:
+                                output_type = 0xD8; // fixext 16
+                                break;
+                            default:
+                                output_type = 0xC7; // ext 8
+                                fixed = false;
+                                break;
+                        }
+
+                    }
+                    else
+                    {
+                        output_type = 0xC4; // bin 8
+                        fixed = false;
+                    }
+
+                    oa->write_character(to_char_type(output_type));
+                    if (!fixed)
+                    {
+                        write_number(static_cast<std::uint8_t>(N));
+                    }
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    std::uint8_t output_type = use_ext
+                                               ? 0xC8 // ext 16
+                                               : 0xC5; // bin 16
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    std::uint8_t output_type = use_ext
+                                               ? 0xC9 // ext 32
+                                               : 0xC6; // bin 32
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 1.5: if this is an ext type, write the subtype
+                if (use_ext)
+                {
+                    write_number(static_cast<std::int8_t>(j.m_value.binary->subtype()));
+                }
+
+                // step 2: write the byte string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_value.object->size();
+                if (N <= 15)
+                {
+                    // fixmap
+                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // map 16
+                    oa->write_character(to_char_type(0xDE));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // map 32
+                    oa->write_character(to_char_type(0xDF));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_msgpack(el.first);
+                    write_msgpack(el.second);
+                }
+                break;
+            }
+
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @param[in] use_count   whether to use '#' prefixes (optimized format)
+    @param[in] use_type    whether to use '$' prefixes (optimized format)
+    @param[in] add_prefix  whether prefixes need to be used for this value
+    */
+    void write_ubjson(const BasicJsonType& j, const bool use_count,
+                      const bool use_type, const bool add_prefix = true)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('Z'));
+                }
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(j.m_value.boolean
+                                        ? to_char_type('T')
+                                        : to_char_type('F'));
+                }
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_integer, add_prefix);
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_unsigned, add_prefix);
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_float, add_prefix);
+                break;
+            }
+
+            case value_t::string:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('S'));
+                }
+                write_number_with_ubjson_prefix(j.m_value.string->size(), true);
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_value.array->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front());
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                                                         [this, first_prefix](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v) == first_prefix;
+                    });
+
+                    if (same_prefix)
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.array->size(), true);
+                }
+
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_ubjson(el, use_count, use_type, prefix_required);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                if (use_type && !j.m_value.binary->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    oa->write_character(to_char_type('$'));
+                    oa->write_character('U');
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.binary->size(), true);
+                }
+
+                if (use_type)
+                {
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                        j.m_value.binary->size());
+                }
+                else
+                {
+                    for (size_t i = 0; i < j.m_value.binary->size(); ++i)
+                    {
+                        oa->write_character(to_char_type('U'));
+                        oa->write_character(j.m_value.binary->data()[i]);
+                    }
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('{'));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_value.object->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front());
+                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                                                         [this, first_prefix](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v) == first_prefix;
+                    });
+
+                    if (same_prefix)
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.object->size(), true);
+                }
+
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_number_with_ubjson_prefix(el.first.size(), true);
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(el.first.c_str()),
+                        el.first.size());
+                    write_ubjson(el.second, use_count, use_type, prefix_required);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type('}'));
+                }
+
+                break;
+            }
+
+            default:
+                break;
+        }
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @return The size of a BSON document entry header, including the id marker
+            and the entry name size (and its null-terminator).
+    */
+    static std::size_t calc_bson_entry_header_size(const string_t& name)
+    {
+        const auto it = name.find(static_cast<typename string_t::value_type>(0));
+        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
+        {
+            JSON_THROW(out_of_range::create(409,
+                                            "BSON key cannot contain code point U+0000 (at byte " + std::to_string(it) + ")"));
+        }
+
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+    }
+
+    /*!
+    @brief Writes the given @a element_type and @a name to the output adapter
+    */
+    void write_bson_entry_header(const string_t& name,
+                                 const std::uint8_t element_type)
+    {
+        oa->write_character(to_char_type(element_type)); // boolean
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(name.c_str()),
+            name.size() + 1u);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and boolean value @a value
+    */
+    void write_bson_boolean(const string_t& name,
+                            const bool value)
+    {
+        write_bson_entry_header(name, 0x08);
+        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and double value @a value
+    */
+    void write_bson_double(const string_t& name,
+                           const double value)
+    {
+        write_bson_entry_header(name, 0x01);
+        write_number<double, true>(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded string in @a value
+    */
+    static std::size_t calc_bson_string_size(const string_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and string value @a value
+    */
+    void write_bson_string(const string_t& name,
+                           const string_t& value)
+    {
+        write_bson_entry_header(name, 0x02);
+
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(value.size() + 1ul));
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(value.c_str()),
+            value.size() + 1);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and null value
+    */
+    void write_bson_null(const string_t& name)
+    {
+        write_bson_entry_header(name, 0x0A);
+    }
+
+    /*!
+    @return The size of the BSON-encoded integer @a value
+    */
+    static std::size_t calc_bson_integer_size(const std::int64_t value)
+    {
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and integer @a value
+    */
+    void write_bson_integer(const string_t& name,
+                            const std::int64_t value)
+    {
+        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            write_bson_entry_header(name, 0x10); // int32
+            write_number<std::int32_t, true>(static_cast<std::int32_t>(value));
+        }
+        else
+        {
+            write_bson_entry_header(name, 0x12); // int64
+            write_number<std::int64_t, true>(static_cast<std::int64_t>(value));
+        }
+    }
+
+    /*!
+    @return The size of the BSON-encoded unsigned integer in @a j
+    */
+    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
+    {
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and unsigned @a value
+    */
+    void write_bson_unsigned(const string_t& name,
+                             const std::uint64_t value)
+    {
+        if (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x10 /* int32 */);
+            write_number<std::int32_t, true>(static_cast<std::int32_t>(value));
+        }
+        else if (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x12 /* int64 */);
+            write_number<std::int64_t, true>(static_cast<std::int64_t>(value));
+        }
+        else
+        {
+            JSON_THROW(out_of_range::create(407, "integer number " + std::to_string(value) + " cannot be represented by BSON as it does not fit int64"));
+        }
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and object @a value
+    */
+    void write_bson_object_entry(const string_t& name,
+                                 const typename BasicJsonType::object_t& value)
+    {
+        write_bson_entry_header(name, 0x03); // object
+        write_bson_object(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded array @a value
+    */
+    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
+    {
+        std::size_t array_index = 0ul;
+
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), std::size_t(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        {
+            return result + calc_bson_element_size(std::to_string(array_index++), el);
+        });
+
+        return sizeof(std::int32_t) + embedded_document_size + 1ul;
+    }
+
+    /*!
+    @return The size of the BSON-encoded binary array @a value
+    */
+    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and array @a value
+    */
+    void write_bson_array(const string_t& name,
+                          const typename BasicJsonType::array_t& value)
+    {
+        write_bson_entry_header(name, 0x04); // array
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_array_size(value)));
+
+        std::size_t array_index = 0ul;
+
+        for (const auto& el : value)
+        {
+            write_bson_element(std::to_string(array_index++), el);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and binary value @a value
+    */
+    void write_bson_binary(const string_t& name,
+                           const binary_t& value)
+    {
+        write_bson_entry_header(name, 0x05);
+
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(value.size()));
+        write_number(value.has_subtype() ? value.subtype() : std::uint8_t(0x00));
+
+        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
+    }
+
+    /*!
+    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
+    @return The calculated size for the BSON document entry for @a j with the given @a name.
+    */
+    static std::size_t calc_bson_element_size(const string_t& name,
+            const BasicJsonType& j)
+    {
+        const auto header_size = calc_bson_entry_header_size(name);
+        switch (j.type())
+        {
+            case value_t::object:
+                return header_size + calc_bson_object_size(*j.m_value.object);
+
+            case value_t::array:
+                return header_size + calc_bson_array_size(*j.m_value.array);
+
+            case value_t::binary:
+                return header_size + calc_bson_binary_size(*j.m_value.binary);
+
+            case value_t::boolean:
+                return header_size + 1ul;
+
+            case value_t::number_float:
+                return header_size + 8ul;
+
+            case value_t::number_integer:
+                return header_size + calc_bson_integer_size(j.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return header_size + calc_bson_unsigned_size(j.m_value.number_unsigned);
+
+            case value_t::string:
+                return header_size + calc_bson_string_size(*j.m_value.string);
+
+            case value_t::null:
+                return header_size + 0ul;
+
+            // LCOV_EXCL_START
+            default:
+                JSON_ASSERT(false);
+                return 0ul;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Serializes the JSON value @a j to BSON and associates it with the
+           key @a name.
+    @param name The name to associate with the JSON entity @a j within the
+                current BSON document
+    @return The size of the BSON entry
+    */
+    void write_bson_element(const string_t& name,
+                            const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+                return write_bson_object_entry(name, *j.m_value.object);
+
+            case value_t::array:
+                return write_bson_array(name, *j.m_value.array);
+
+            case value_t::binary:
+                return write_bson_binary(name, *j.m_value.binary);
+
+            case value_t::boolean:
+                return write_bson_boolean(name, j.m_value.boolean);
+
+            case value_t::number_float:
+                return write_bson_double(name, j.m_value.number_float);
+
+            case value_t::number_integer:
+                return write_bson_integer(name, j.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return write_bson_unsigned(name, j.m_value.number_unsigned);
+
+            case value_t::string:
+                return write_bson_string(name, *j.m_value.string);
+
+            case value_t::null:
+                return write_bson_null(name);
+
+            // LCOV_EXCL_START
+            default:
+                JSON_ASSERT(false);
+                return;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Calculates the size of the BSON serialization of the given
+           JSON-object @a j.
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
+    {
+        std::size_t document_size = std::accumulate(value.begin(), value.end(), std::size_t(0),
+                                    [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+        {
+            return result += calc_bson_element_size(el.first, el.second);
+        });
+
+        return sizeof(std::int32_t) + document_size + 1ul;
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson_object(const typename BasicJsonType::object_t& value)
+    {
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_object_size(value)));
+
+        for (const auto& el : value)
+        {
+            write_bson_element(el.first, el.second);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xFA);  // Single-Precision Float
+    }
+
+    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xFB);  // Double-Precision Float
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xCA);  // float 32
+    }
+
+    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xCB);  // float 64
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    // UBJSON: write number (floating point)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if (add_prefix)
+        {
+            oa->write_character(get_ubjson_float_prefix(n));
+        }
+        write_number(n);
+    }
+
+    // UBJSON: write number (unsigned integer)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n));
+        }
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+    }
+
+    // UBJSON: write number (signed integer)
+    template < typename NumberType, typename std::enable_if <
+                   std::is_signed<NumberType>::value&&
+                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::int8_t>(n));
+        }
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n));
+        }
+        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n));
+        }
+        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n));
+        }
+        // LCOV_EXCL_START
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+        // LCOV_EXCL_STOP
+    }
+
+    /*!
+    @brief determine the type prefix of container values
+    */
+    CharType ubjson_prefix(const BasicJsonType& j) const noexcept
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+                return 'Z';
+
+            case value_t::boolean:
+                return j.m_value.boolean ? 'T' : 'F';
+
+            case value_t::number_integer:
+            {
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                {
+                    return 'i';
+                }
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    return 'U';
+                }
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                {
+                    return 'I';
+                }
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                {
+                    return 'l';
+                }
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+                {
+                    return 'i';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
+                {
+                    return 'U';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+                {
+                    return 'I';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+                {
+                    return 'l';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_float:
+                return get_ubjson_float_prefix(j.m_value.number_float);
+
+            case value_t::string:
+                return 'S';
+
+            case value_t::array: // fallthrough
+            case value_t::binary:
+                return '[';
+
+            case value_t::object:
+                return '{';
+
+            default:  // discarded values
+                return 'N';
+        }
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
+    {
+        return 'd';  // float 32
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
+    {
+        return 'D';  // float 64
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*
+    @brief write a number to output input
+    @param[in] n number of type @a NumberType
+    @tparam NumberType the type of the number
+    @tparam OutputIsLittleEndian Set to true if output data is
+                                 required to be little endian
+
+    @note This function needs to respect the system's endianess, because bytes
+          in CBOR, MessagePack, and UBJSON are stored in network order (big
+          endian) and therefore need reordering on little endian systems.
+    */
+    template<typename NumberType, bool OutputIsLittleEndian = false>
+    void write_number(const NumberType n)
+    {
+        // step 1: write number to array of length NumberType
+        std::array<CharType, sizeof(NumberType)> vec;
+        std::memcpy(vec.data(), &n, sizeof(NumberType));
+
+        // step 2: write array to output (with possible reordering)
+        if (is_little_endian != OutputIsLittleEndian)
+        {
+            // reverse byte order prior to conversion if necessary
+            std::reverse(vec.begin(), vec.end());
+        }
+
+        oa->write_characters(vec.data(), sizeof(NumberType));
+    }
+
+    void write_compact_float(const number_float_t n, detail::input_format_t format)
+    {
+        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(static_cast<float>(n))
+                                : get_msgpack_float_prefix(static_cast<float>(n)));
+            write_number(static_cast<float>(n));
+        }
+        else
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(n)
+                                : get_msgpack_float_prefix(n));
+            write_number(n);
+        }
+    }
+
+  public:
+    // The following to_char_type functions are implement the conversion
+    // between uint8_t and CharType. In case CharType is not unsigned,
+    // such a conversion is required to allow values greater than 128.
+    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return *reinterpret_cast<char*>(&x);
+    }
+
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
+    static CharType to_char_type(std::uint8_t x) noexcept
+    {
+        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
+        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
+        CharType result;
+        std::memcpy(&result, &x, sizeof(x));
+        return result;
+    }
+
+    template<typename C = CharType,
+             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return x;
+    }
+
+    template < typename InputCharType, typename C = CharType,
+               enable_if_t <
+                   std::is_signed<C>::value &&
+                   std::is_signed<char>::value &&
+                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
+                   > * = nullptr >
+    static constexpr CharType to_char_type(InputCharType x) noexcept
+    {
+        return x;
+    }
+
+  private:
+    /// whether we can assume little endianess
+    const bool is_little_endian = little_endianess();
+
+    /// the output
+    output_adapter_t<CharType> oa = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/output/serializer.hpp>
+
+
+#include <algorithm> // reverse, remove, fill, find, none_of
+#include <array> // array
+#include <clocale> // localeconv, lconv
+#include <cmath> // labs, isfinite, isnan, signbit
+#include <cstddef> // size_t, ptrdiff_t
+#include <cstdint> // uint8_t
+#include <cstdio> // snprintf
+#include <limits> // numeric_limits
+#include <string> // string, char_traits
+#include <type_traits> // is_same
+#include <utility> // move
+
+// #include <nlohmann/detail/conversions/to_chars.hpp>
+
+
+#include <array> // array
+#include <cmath>   // signbit, isfinite
+#include <cstdint> // intN_t, uintN_t
+#include <cstring> // memcpy, memmove
+#include <limits> // numeric_limits
+#include <type_traits> // conditional
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+/*!
+@brief implements the Grisu2 algorithm for binary to decimal floating-point
+conversion.
+
+This implementation is a slightly modified version of the reference
+implementation which may be obtained from
+http://florian.loitsch.com/publications (bench.tar.gz).
+
+The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
+
+For a detailed description of the algorithm see:
+
+[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
+    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
+    Language Design and Implementation, PLDI 2010
+[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
+    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
+    Design and Implementation, PLDI 1996
+*/
+namespace dtoa_impl
+{
+
+template<typename Target, typename Source>
+Target reinterpret_bits(const Source source)
+{
+    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
+
+    Target target;
+    std::memcpy(&target, &source, sizeof(Source));
+    return target;
+}
+
+struct diyfp // f * 2^e
+{
+    static constexpr int kPrecision = 64; // = q
+
+    std::uint64_t f = 0;
+    int e = 0;
+
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+
+    /*!
+    @brief returns x - y
+    @pre x.e == y.e and x.f >= y.f
+    */
+    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
+    {
+        JSON_ASSERT(x.e == y.e);
+        JSON_ASSERT(x.f >= y.f);
+
+        return {x.f - y.f, x.e};
+    }
+
+    /*!
+    @brief returns x * y
+    @note The result is rounded. (Only the upper q bits are returned.)
+    */
+    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
+    {
+        static_assert(kPrecision == 64, "internal error");
+
+        // Computes:
+        //  f = round((x.f * y.f) / 2^q)
+        //  e = x.e + y.e + q
+
+        // Emulate the 64-bit * 64-bit multiplication:
+        //
+        // p = u * v
+        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
+        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
+        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
+        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
+        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
+        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
+        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
+        //
+        // (Since Q might be larger than 2^32 - 1)
+        //
+        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
+        //
+        // (Q_hi + H does not overflow a 64-bit int)
+        //
+        //   = p_lo + 2^64 p_hi
+
+        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
+        const std::uint64_t u_hi = x.f >> 32u;
+        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
+        const std::uint64_t v_hi = y.f >> 32u;
+
+        const std::uint64_t p0 = u_lo * v_lo;
+        const std::uint64_t p1 = u_lo * v_hi;
+        const std::uint64_t p2 = u_hi * v_lo;
+        const std::uint64_t p3 = u_hi * v_hi;
+
+        const std::uint64_t p0_hi = p0 >> 32u;
+        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
+        const std::uint64_t p1_hi = p1 >> 32u;
+        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
+        const std::uint64_t p2_hi = p2 >> 32u;
+
+        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
+
+        // The full product might now be computed as
+        //
+        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
+        // p_lo = p0_lo + (Q << 32)
+        //
+        // But in this particular case here, the full p_lo is not required.
+        // Effectively we only need to add the highest bit in p_lo to p_hi (and
+        // Q_hi + 1 does not overflow).
+
+        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+
+        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
+
+        return {h, x.e + y.e + 64};
+    }
+
+    /*!
+    @brief normalize x such that the significand is >= 2^(q-1)
+    @pre x.f != 0
+    */
+    static diyfp normalize(diyfp x) noexcept
+    {
+        JSON_ASSERT(x.f != 0);
+
+        while ((x.f >> 63u) == 0)
+        {
+            x.f <<= 1u;
+            x.e--;
+        }
+
+        return x;
+    }
+
+    /*!
+    @brief normalize x such that the result has the exponent E
+    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
+    */
+    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
+    {
+        const int delta = x.e - target_exponent;
+
+        JSON_ASSERT(delta >= 0);
+        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
+
+        return {x.f << delta, target_exponent};
+    }
+};
+
+struct boundaries
+{
+    diyfp w;
+    diyfp minus;
+    diyfp plus;
+};
+
+/*!
+Compute the (normalized) diyfp representing the input number 'value' and its
+boundaries.
+
+@pre value must be finite and positive
+*/
+template<typename FloatType>
+boundaries compute_boundaries(FloatType value)
+{
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // Convert the IEEE representation into a diyfp.
+    //
+    // If v is denormal:
+    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
+    // If v is normalized:
+    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
+
+    static_assert(std::numeric_limits<FloatType>::is_iec559,
+                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
+
+    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
+    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
+    constexpr int      kMinExp    = 1 - kBias;
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+
+    const std::uint64_t bits = reinterpret_bits<bits_type>(value);
+    const std::uint64_t E = bits >> (kPrecision - 1);
+    const std::uint64_t F = bits & (kHiddenBit - 1);
+
+    const bool is_denormal = E == 0;
+    const diyfp v = is_denormal
+                    ? diyfp(F, kMinExp)
+                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
+
+    // Compute the boundaries m- and m+ of the floating-point value
+    // v = f * 2^e.
+    //
+    // Determine v- and v+, the floating-point predecessor and successor if v,
+    // respectively.
+    //
+    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
+    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
+    //
+    //      v+ = v + 2^e
+    //
+    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
+    // between m- and m+ round to v, regardless of how the input rounding
+    // algorithm breaks ties.
+    //
+    //      ---+-------------+-------------+-------------+-------------+---  (A)
+    //         v-            m-            v             m+            v+
+    //
+    //      -----------------+------+------+-------------+-------------+---  (B)
+    //                       v-     m-     v             m+            v+
+
+    const bool lower_boundary_is_closer = F == 0 && E > 1;
+    const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
+    const diyfp m_minus = lower_boundary_is_closer
+                          ? diyfp(4 * v.f - 1, v.e - 2)  // (B)
+                          : diyfp(2 * v.f - 1, v.e - 1); // (A)
+
+    // Determine the normalized w+ = m+.
+    const diyfp w_plus = diyfp::normalize(m_plus);
+
+    // Determine w- = m- such that e_(w-) = e_(w+).
+    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
+
+    return {diyfp::normalize(v), w_minus, w_plus};
+}
+
+// Given normalized diyfp w, Grisu needs to find a (normalized) cached
+// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
+// within a certain range [alpha, gamma] (Definition 3.2 from [1])
+//
+//      alpha <= e = e_c + e_w + q <= gamma
+//
+// or
+//
+//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
+//                          <= f_c * f_w * 2^gamma
+//
+// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
+//
+//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
+//
+// or
+//
+//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
+//
+// The choice of (alpha,gamma) determines the size of the table and the form of
+// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
+// in practice:
+//
+// The idea is to cut the number c * w = f * 2^e into two parts, which can be
+// processed independently: An integral part p1, and a fractional part p2:
+//
+//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
+//              = (f div 2^-e) + (f mod 2^-e) * 2^e
+//              = p1 + p2 * 2^e
+//
+// The conversion of p1 into decimal form requires a series of divisions and
+// modulos by (a power of) 10. These operations are faster for 32-bit than for
+// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
+// achieved by choosing
+//
+//      -e >= 32   or   e <= -32 := gamma
+//
+// In order to convert the fractional part
+//
+//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
+//
+// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
+// d[-i] are extracted in order:
+//
+//      (10 * p2) div 2^-e = d[-1]
+//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
+//
+// The multiplication by 10 must not overflow. It is sufficient to choose
+//
+//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
+//
+// Since p2 = f mod 2^-e < 2^-e,
+//
+//      -e <= 60   or   e >= -60 := alpha
+
+constexpr int kAlpha = -60;
+constexpr int kGamma = -32;
+
+struct cached_power // c = f * 2^e ~= 10^k
+{
+    std::uint64_t f;
+    int e;
+    int k;
+};
+
+/*!
+For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
+power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
+satisfies (Definition 3.2 from [1])
+
+     alpha <= e_c + e + q <= gamma.
+*/
+inline cached_power get_cached_power_for_binary_exponent(int e)
+{
+    // Now
+    //
+    //      alpha <= e_c + e + q <= gamma                                    (1)
+    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
+    //
+    // and since the c's are normalized, 2^(q-1) <= f_c,
+    //
+    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
+    //      ==> 2^(alpha - e - 1) <= c
+    //
+    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
+    //
+    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
+    //        = ceil( (alpha - e - 1) * log_10(2) )
+    //
+    // From the paper:
+    // "In theory the result of the procedure could be wrong since c is rounded,
+    //  and the computation itself is approximated [...]. In practice, however,
+    //  this simple function is sufficient."
+    //
+    // For IEEE double precision floating-point numbers converted into
+    // normalized diyfp's w = f * 2^e, with q = 64,
+    //
+    //      e >= -1022      (min IEEE exponent)
+    //           -52        (p - 1)
+    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
+    //           -11        (normalize the diyfp)
+    //         = -1137
+    //
+    // and
+    //
+    //      e <= +1023      (max IEEE exponent)
+    //           -52        (p - 1)
+    //           -11        (normalize the diyfp)
+    //         = 960
+    //
+    // This binary exponent range [-1137,960] results in a decimal exponent
+    // range [-307,324]. One does not need to store a cached power for each
+    // k in this range. For each such k it suffices to find a cached power
+    // such that the exponent of the product lies in [alpha,gamma].
+    // This implies that the difference of the decimal exponents of adjacent
+    // table entries must be less than or equal to
+    //
+    //      floor( (gamma - alpha) * log_10(2) ) = 8.
+    //
+    // (A smaller distance gamma-alpha would require a larger table.)
+
+    // NB:
+    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
+
+    constexpr int kCachedPowersMinDecExp = -300;
+    constexpr int kCachedPowersDecStep = 8;
+
+    static constexpr std::array<cached_power, 79> kCachedPowers =
+    {
+        {
+            { 0xAB70FE17C79AC6CA, -1060, -300 },
+            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+            { 0xBE5691EF416BD60C, -1007, -284 },
+            { 0x8DD01FAD907FFC3C,  -980, -276 },
+            { 0xD3515C2831559A83,  -954, -268 },
+            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+            { 0xEA9C227723EE8BCB,  -901, -252 },
+            { 0xAECC49914078536D,  -874, -244 },
+            { 0x823C12795DB6CE57,  -847, -236 },
+            { 0xC21094364DFB5637,  -821, -228 },
+            { 0x9096EA6F3848984F,  -794, -220 },
+            { 0xD77485CB25823AC7,  -768, -212 },
+            { 0xA086CFCD97BF97F4,  -741, -204 },
+            { 0xEF340A98172AACE5,  -715, -196 },
+            { 0xB23867FB2A35B28E,  -688, -188 },
+            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+            { 0xC5DD44271AD3CDBA,  -635, -172 },
+            { 0x936B9FCEBB25C996,  -608, -164 },
+            { 0xDBAC6C247D62A584,  -582, -156 },
+            { 0xA3AB66580D5FDAF6,  -555, -148 },
+            { 0xF3E2F893DEC3F126,  -529, -140 },
+            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
+            { 0x87625F056C7C4A8B,  -475, -124 },
+            { 0xC9BCFF6034C13053,  -449, -116 },
+            { 0x964E858C91BA2655,  -422, -108 },
+            { 0xDFF9772470297EBD,  -396, -100 },
+            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
+            { 0xF8A95FCF88747D94,  -343,  -84 },
+            { 0xB94470938FA89BCF,  -316,  -76 },
+            { 0x8A08F0F8BF0F156B,  -289,  -68 },
+            { 0xCDB02555653131B6,  -263,  -60 },
+            { 0x993FE2C6D07B7FAC,  -236,  -52 },
+            { 0xE45C10C42A2B3B06,  -210,  -44 },
+            { 0xAA242499697392D3,  -183,  -36 },
+            { 0xFD87B5F28300CA0E,  -157,  -28 },
+            { 0xBCE5086492111AEB,  -130,  -20 },
+            { 0x8CBCCC096F5088CC,  -103,  -12 },
+            { 0xD1B71758E219652C,   -77,   -4 },
+            { 0x9C40000000000000,   -50,    4 },
+            { 0xE8D4A51000000000,   -24,   12 },
+            { 0xAD78EBC5AC620000,     3,   20 },
+            { 0x813F3978F8940984,    30,   28 },
+            { 0xC097CE7BC90715B3,    56,   36 },
+            { 0x8F7E32CE7BEA5C70,    83,   44 },
+            { 0xD5D238A4ABE98068,   109,   52 },
+            { 0x9F4F2726179A2245,   136,   60 },
+            { 0xED63A231D4C4FB27,   162,   68 },
+            { 0xB0DE65388CC8ADA8,   189,   76 },
+            { 0x83C7088E1AAB65DB,   216,   84 },
+            { 0xC45D1DF942711D9A,   242,   92 },
+            { 0x924D692CA61BE758,   269,  100 },
+            { 0xDA01EE641A708DEA,   295,  108 },
+            { 0xA26DA3999AEF774A,   322,  116 },
+            { 0xF209787BB47D6B85,   348,  124 },
+            { 0xB454E4A179DD1877,   375,  132 },
+            { 0x865B86925B9BC5C2,   402,  140 },
+            { 0xC83553C5C8965D3D,   428,  148 },
+            { 0x952AB45CFA97A0B3,   455,  156 },
+            { 0xDE469FBD99A05FE3,   481,  164 },
+            { 0xA59BC234DB398C25,   508,  172 },
+            { 0xF6C69A72A3989F5C,   534,  180 },
+            { 0xB7DCBF5354E9BECE,   561,  188 },
+            { 0x88FCF317F22241E2,   588,  196 },
+            { 0xCC20CE9BD35C78A5,   614,  204 },
+            { 0x98165AF37B2153DF,   641,  212 },
+            { 0xE2A0B5DC971F303A,   667,  220 },
+            { 0xA8D9D1535CE3B396,   694,  228 },
+            { 0xFB9B7CD9A4A7443C,   720,  236 },
+            { 0xBB764C4CA7A44410,   747,  244 },
+            { 0x8BAB8EEFB6409C1A,   774,  252 },
+            { 0xD01FEF10A657842C,   800,  260 },
+            { 0x9B10A4E5E9913129,   827,  268 },
+            { 0xE7109BFBA19C0C9D,   853,  276 },
+            { 0xAC2820D9623BF429,   880,  284 },
+            { 0x80444B5E7AA7CF85,   907,  292 },
+            { 0xBF21E44003ACDD2D,   933,  300 },
+            { 0x8E679C2F5E44FF8F,   960,  308 },
+            { 0xD433179D9C8CB841,   986,  316 },
+            { 0x9E19DB92B4E31BA9,  1013,  324 },
+        }
+    };
+
+    // This computation gives exactly the same results for k as
+    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
+    // for |e| <= 1500, but doesn't require floating-point operations.
+    // NB: log_10(2) ~= 78913 / 2^18
+    JSON_ASSERT(e >= -1500);
+    JSON_ASSERT(e <=  1500);
+    const int f = kAlpha - e - 1;
+    const int k = (f * 78913) / (1 << 18) + static_cast<int>(f > 0);
+
+    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
+    JSON_ASSERT(index >= 0);
+    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
+
+    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
+    JSON_ASSERT(kAlpha <= cached.e + e + 64);
+    JSON_ASSERT(kGamma >= cached.e + e + 64);
+
+    return cached;
+}
+
+/*!
+For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
+For n == 0, returns 1 and sets pow10 := 1.
+*/
+inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
+{
+    // LCOV_EXCL_START
+    if (n >= 1000000000)
+    {
+        pow10 = 1000000000;
+        return 10;
+    }
+    // LCOV_EXCL_STOP
+    else if (n >= 100000000)
+    {
+        pow10 = 100000000;
+        return  9;
+    }
+    else if (n >= 10000000)
+    {
+        pow10 = 10000000;
+        return  8;
+    }
+    else if (n >= 1000000)
+    {
+        pow10 = 1000000;
+        return  7;
+    }
+    else if (n >= 100000)
+    {
+        pow10 = 100000;
+        return  6;
+    }
+    else if (n >= 10000)
+    {
+        pow10 = 10000;
+        return  5;
+    }
+    else if (n >= 1000)
+    {
+        pow10 = 1000;
+        return  4;
+    }
+    else if (n >= 100)
+    {
+        pow10 = 100;
+        return  3;
+    }
+    else if (n >= 10)
+    {
+        pow10 = 10;
+        return  2;
+    }
+    else
+    {
+        pow10 = 1;
+        return 1;
+    }
+}
+
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+                         std::uint64_t rest, std::uint64_t ten_k)
+{
+    JSON_ASSERT(len >= 1);
+    JSON_ASSERT(dist <= delta);
+    JSON_ASSERT(rest <= delta);
+    JSON_ASSERT(ten_k > 0);
+
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    //                                  ten_k
+    //                                <------>
+    //                                       <---- rest ---->
+    // --------------[------------------+----+--------------]--------------
+    //                                  w    V
+    //                                       = buf * 10^k
+    //
+    // ten_k represents a unit-in-the-last-place in the decimal representation
+    // stored in buf.
+    // Decrement buf by ten_k while this takes buf closer to w.
+
+    // The tests are written in this order to avoid overflow in unsigned
+    // integer arithmetic.
+
+    while (rest < dist
+            && delta - rest >= ten_k
+            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
+    {
+        JSON_ASSERT(buf[len - 1] != '0');
+        buf[len - 1]--;
+        rest += ten_k;
+    }
+}
+
+/*!
+Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
+M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
+*/
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+                             diyfp M_minus, diyfp w, diyfp M_plus)
+{
+    static_assert(kAlpha >= -60, "internal error");
+    static_assert(kGamma <= -32, "internal error");
+
+    // Generates the digits (and the exponent) of a decimal floating-point
+    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
+    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
+    //
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    // Grisu2 generates the digits of M+ from left to right and stops as soon as
+    // V is in [M-,M+].
+
+    JSON_ASSERT(M_plus.e >= kAlpha);
+    JSON_ASSERT(M_plus.e <= kGamma);
+
+    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
+    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+
+    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
+    //
+    //      M+ = f * 2^e
+    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
+    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
+    //         = p1 + p2 * 2^e
+
+    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+
+    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
+    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
+
+    // 1)
+    //
+    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
+
+    JSON_ASSERT(p1 > 0);
+
+    std::uint32_t pow10;
+    const int k = find_largest_pow10(p1, pow10);
+
+    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
+    //
+    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
+    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
+    //
+    //      M+ = p1                                             + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
+    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
+    //
+    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
+    //
+    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
+    //
+    // but stop as soon as
+    //
+    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
+
+    int n = k;
+    while (n > 0)
+    {
+        // Invariants:
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        //
+        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
+        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
+        //
+        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
+        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
+        //
+        p1 = r;
+        n--;
+        //
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
+        //      pow10 = 10^n
+        //
+
+        // Now check if enough digits have been generated.
+        // Compute
+        //
+        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
+        //
+        // Note:
+        // Since rest and delta share the same exponent e, it suffices to
+        // compare the significands.
+        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        if (rest <= delta)
+        {
+            // V = buffer * 10^n, with M- <= V <= M+.
+
+            decimal_exponent += n;
+
+            // We may now just stop. But instead look if the buffer could be
+            // decremented to bring V closer to w.
+            //
+            // pow10 = 10^n is now 1 ulp in the decimal representation V.
+            // The rounding procedure works with diyfp's with an implicit
+            // exponent of e.
+            //
+            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
+            //
+            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            grisu2_round(buffer, length, dist, delta, rest, ten_n);
+
+            return;
+        }
+
+        pow10 /= 10;
+        //
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        // Invariants restored.
+    }
+
+    // 2)
+    //
+    // The digits of the integral part have been generated:
+    //
+    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
+    //         = buffer            + p2 * 2^e
+    //
+    // Now generate the digits of the fractional part p2 * 2^e.
+    //
+    // Note:
+    // No decimal point is generated: the exponent is adjusted instead.
+    //
+    // p2 actually represents the fraction
+    //
+    //      p2 * 2^e
+    //          = p2 / 2^-e
+    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
+    //
+    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
+    //
+    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
+    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
+    //
+    // using
+    //
+    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
+    //                = (                   d) * 2^-e + (                   r)
+    //
+    // or
+    //      10^m * p2 * 2^e = d + r * 2^e
+    //
+    // i.e.
+    //
+    //      M+ = buffer + p2 * 2^e
+    //         = buffer + 10^-m * (d + r * 2^e)
+    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
+    //
+    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
+
+    JSON_ASSERT(p2 > delta);
+
+    int m = 0;
+    for (;;)
+    {
+        // Invariant:
+        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
+        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
+        //
+        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
+        p2 *= 10;
+        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
+        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
+        //
+        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
+        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        p2 = r;
+        m++;
+        //
+        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
+        // Invariant restored.
+
+        // Check if enough digits have been generated.
+        //
+        //      10^-m * p2 * 2^e <= delta * 2^e
+        //              p2 * 2^e <= 10^m * delta * 2^e
+        //                    p2 <= 10^m * delta
+        delta *= 10;
+        dist  *= 10;
+        if (p2 <= delta)
+        {
+            break;
+        }
+    }
+
+    // V = buffer * 10^-m, with M- <= V <= M+.
+
+    decimal_exponent -= m;
+
+    // 1 ulp in the decimal representation is now 10^-m.
+    // Since delta and dist are now scaled by 10^m, we need to do the
+    // same with ulp in order to keep the units in sync.
+    //
+    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
+    //
+    const std::uint64_t ten_m = one.f;
+    grisu2_round(buffer, length, dist, delta, p2, ten_m);
+
+    // By construction this algorithm generates the shortest possible decimal
+    // number (Loitsch, Theorem 6.2) which rounds back to w.
+    // For an input number of precision p, at least
+    //
+    //      N = 1 + ceil(p * log_10(2))
+    //
+    // decimal digits are sufficient to identify all binary floating-point
+    // numbers (Matula, "In-and-Out conversions").
+    // This implies that the algorithm does not produce more than N decimal
+    // digits.
+    //
+    //      N = 17 for p = 53 (IEEE double precision)
+    //      N = 9  for p = 24 (IEEE single precision)
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline void grisu2(char* buf, int& len, int& decimal_exponent,
+                   diyfp m_minus, diyfp v, diyfp m_plus)
+{
+    JSON_ASSERT(m_plus.e == m_minus.e);
+    JSON_ASSERT(m_plus.e == v.e);
+
+    //  --------(-----------------------+-----------------------)--------    (A)
+    //          m-                      v                       m+
+    //
+    //  --------------------(-----------+-----------------------)--------    (B)
+    //                      m-          v                       m+
+    //
+    // First scale v (and m- and m+) such that the exponent is in the range
+    // [alpha, gamma].
+
+    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
+
+    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
+
+    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
+    const diyfp w       = diyfp::mul(v,       c_minus_k);
+    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
+    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
+
+    //  ----(---+---)---------------(---+---)---------------(---+---)----
+    //          w-                      w                       w+
+    //          = c*m-                  = c*v                   = c*m+
+    //
+    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
+    // w+ are now off by a small amount.
+    // In fact:
+    //
+    //      w - v * 10^k < 1 ulp
+    //
+    // To account for this inaccuracy, add resp. subtract 1 ulp.
+    //
+    //  --------+---[---------------(---+---)---------------]---+--------
+    //          w-  M-                  w                   M+  w+
+    //
+    // Now any number in [M-, M+] (bounds included) will round to w when input,
+    // regardless of how the input rounding algorithm breaks ties.
+    //
+    // And digit_gen generates the shortest possible such number in [M-, M+].
+    // Note that this does not mean that Grisu2 always generates the shortest
+    // possible number in the interval (m-, m+).
+    const diyfp M_minus(w_minus.f + 1, w_minus.e);
+    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+
+    decimal_exponent = -cached.k; // = -(-k) = k
+
+    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1)
+void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
+{
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+                  "internal error: not enough precision");
+
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
+    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
+    // decimal representations are not exactly "short".
+    //
+    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
+    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
+    // and since sprintf promotes float's to double's, I think this is exactly what 'std::to_chars'
+    // does.
+    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
+    // representation using the corresponding std::from_chars function recovers value exactly". That
+    // indicates that single precision floating-point numbers should be recovered using
+    // 'std::strtof'.
+    //
+    // NB: If the neighbors are computed for single-precision numbers, there is a single float
+    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
+    //     value is off by 1 ulp.
+#if 0
+    const boundaries w = compute_boundaries(static_cast<double>(value));
+#else
+    const boundaries w = compute_boundaries(value);
+#endif
+
+    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
+}
+
+/*!
+@brief appends a decimal representation of e to buf
+@return a pointer to the element following the exponent.
+@pre -1000 < e < 1000
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* append_exponent(char* buf, int e)
+{
+    JSON_ASSERT(e > -1000);
+    JSON_ASSERT(e <  1000);
+
+    if (e < 0)
+    {
+        e = -e;
+        *buf++ = '-';
+    }
+    else
+    {
+        *buf++ = '+';
+    }
+
+    auto k = static_cast<std::uint32_t>(e);
+    if (k < 10)
+    {
+        // Always print at least two digits in the exponent.
+        // This is for compatibility with printf("%g").
+        *buf++ = '0';
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else if (k < 100)
+    {
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else
+    {
+        *buf++ = static_cast<char>('0' + k / 100);
+        k %= 100;
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+
+    return buf;
+}
+
+/*!
+@brief prettify v = buf * 10^decimal_exponent
+
+If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
+notation. Otherwise it will be printed in exponential notation.
+
+@pre min_exp < 0
+@pre max_exp > 0
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* format_buffer(char* buf, int len, int decimal_exponent,
+                           int min_exp, int max_exp)
+{
+    JSON_ASSERT(min_exp < 0);
+    JSON_ASSERT(max_exp > 0);
+
+    const int k = len;
+    const int n = len + decimal_exponent;
+
+    // v = buf * 10^(n-k)
+    // k is the length of the buffer (number of decimal digits)
+    // n is the position of the decimal point relative to the start of the buffer.
+
+    if (k <= n && n <= max_exp)
+    {
+        // digits[000]
+        // len <= max_exp + 2
+
+        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
+        // Make it look like a floating-point number (#362, #378)
+        buf[n + 0] = '.';
+        buf[n + 1] = '0';
+        return buf + (static_cast<size_t>(n) + 2);
+    }
+
+    if (0 < n && n <= max_exp)
+    {
+        // dig.its
+        // len <= max_digits10 + 1
+
+        JSON_ASSERT(k > n);
+
+        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
+        buf[n] = '.';
+        return buf + (static_cast<size_t>(k) + 1U);
+    }
+
+    if (min_exp < n && n <= 0)
+    {
+        // 0.[000]digits
+        // len <= 2 + (-min_exp - 1) + max_digits10
+
+        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
+        buf[0] = '0';
+        buf[1] = '.';
+        std::memset(buf + 2, '0', static_cast<size_t>(-n));
+        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
+    }
+
+    if (k == 1)
+    {
+        // dE+123
+        // len <= 1 + 5
+
+        buf += 1;
+    }
+    else
+    {
+        // d.igitsE+123
+        // len <= max_digits10 + 1 + 5
+
+        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
+        buf[1] = '.';
+        buf += 1 + static_cast<size_t>(k);
+    }
+
+    *buf++ = 'e';
+    return append_exponent(buf, n - 1);
+}
+
+} // namespace dtoa_impl
+
+/*!
+@brief generates a decimal representation of the floating-point number value in [first, last).
+
+The format of the resulting decimal representation is similar to printf's %g
+format. Returns an iterator pointing past-the-end of the decimal representation.
+
+@note The input number must be finite, i.e. NaN's and Inf's are not supported.
+@note The buffer must be large enough.
+@note The result is NOT null-terminated.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* to_chars(char* first, const char* last, FloatType value)
+{
+    static_cast<void>(last); // maybe unused - fix warning
+    JSON_ASSERT(std::isfinite(value));
+
+    // Use signbit(value) instead of (value < 0) since signbit works for -0.
+    if (std::signbit(value))
+    {
+        value = -value;
+        *first++ = '-';
+    }
+
+    if (value == 0) // +-0
+    {
+        *first++ = '0';
+        // Make it look like a floating-point number (#362, #378)
+        *first++ = '.';
+        *first++ = '0';
+        return first;
+    }
+
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e. the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    dtoa_impl::grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////
+// serialization //
+///////////////////
+
+/// how to treat decoding errors
+enum class error_handler_t
+{
+    strict,  ///< throw a type_error exception in case of invalid UTF-8
+    replace, ///< replace invalid UTF-8 sequences with U+FFFD
+    ignore   ///< ignore invalid UTF-8 sequences
+};
+
+template<typename BasicJsonType>
+class serializer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using binary_char_t = typename BasicJsonType::binary_t::value_type;
+    static constexpr std::uint8_t UTF8_ACCEPT = 0;
+    static constexpr std::uint8_t UTF8_REJECT = 1;
+
+  public:
+    /*!
+    @param[in] s  output stream to serialize to
+    @param[in] ichar  indentation character to use
+    @param[in] error_handler_  how to react on decoding errors
+    */
+    serializer(output_adapter_t<char> s, const char ichar,
+               error_handler_t error_handler_ = error_handler_t::strict)
+        : o(std::move(s))
+        , loc(std::localeconv())
+        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+        , indent_char(ichar)
+        , indent_string(512, indent_char)
+        , error_handler(error_handler_)
+    {}
+
+    // delete because of pointer members
+    serializer(const serializer&) = delete;
+    serializer& operator=(const serializer&) = delete;
+    serializer(serializer&&) = delete;
+    serializer& operator=(serializer&&) = delete;
+    ~serializer() = default;
+
+    /*!
+    @brief internal implementation of the serialization function
+
+    This function is called by the public member function dump and organizes
+    the serialization internally. The indentation level is propagated as
+    additional parameter. In case of arrays and objects, the function is
+    called recursively.
+
+    - strings and object keys are escaped using `escape_string()`
+    - integer numbers are converted implicitly via `operator<<`
+    - floating-point numbers are converted to a string using `"%g"` format
+    - binary values are serialized as objects containing the subtype and the
+      byte array
+
+    @param[in] val               value to serialize
+    @param[in] pretty_print      whether the output shall be pretty-printed
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] indent_step       the indent level
+    @param[in] current_indent    the current indent level (only used internally)
+    */
+    void dump(const BasicJsonType& val,
+              const bool pretty_print,
+              const bool ensure_ascii,
+              const unsigned int indent_step,
+              const unsigned int current_indent = 0)
+    {
+        switch (val.m_type)
+        {
+            case value_t::object:
+            {
+                if (val.m_value.object->empty())
+                {
+                    o->write_characters("{}", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    auto i = val.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\": ", 3);
+                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_value.object->cend());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\": ", 3);
+                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_character('{');
+
+                    // first n-1 elements
+                    auto i = val.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\":", 2);
+                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_value.object->cend());
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\":", 2);
+                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character('}');
+                }
+
+                return;
+            }
+
+            case value_t::array:
+            {
+                if (val.m_value.array->empty())
+                {
+                    o->write_characters("[]", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("[\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    for (auto i = val.m_value.array->cbegin();
+                            i != val.m_value.array->cend() - 1; ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        dump(*i, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_value.array->empty());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    dump(val.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character(']');
+                }
+                else
+                {
+                    o->write_character('[');
+
+                    // first n-1 elements
+                    for (auto i = val.m_value.array->cbegin();
+                            i != val.m_value.array->cend() - 1; ++i)
+                    {
+                        dump(*i, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_value.array->empty());
+                    dump(val.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character(']');
+                }
+
+                return;
+            }
+
+            case value_t::string:
+            {
+                o->write_character('\"');
+                dump_escaped(*val.m_value.string, ensure_ascii);
+                o->write_character('\"');
+                return;
+            }
+
+            case value_t::binary:
+            {
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"bytes\": [", 10);
+
+                    if (!val.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_value.binary->cbegin();
+                                i != val.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_characters(", ", 2);
+                        }
+                        dump_integer(val.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\n", 3);
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"subtype\": ", 11);
+                    if (val.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_value.binary->subtype());
+                    }
+                    else
+                    {
+                        o->write_characters("null", 4);
+                    }
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_characters("{\"bytes\":[", 10);
+
+                    if (!val.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_value.binary->cbegin();
+                                i != val.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_character(',');
+                        }
+                        dump_integer(val.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\"subtype\":", 12);
+                    if (val.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_value.binary->subtype());
+                        o->write_character('}');
+                    }
+                    else
+                    {
+                        o->write_characters("null}", 5);
+                    }
+                }
+                return;
+            }
+
+            case value_t::boolean:
+            {
+                if (val.m_value.boolean)
+                {
+                    o->write_characters("true", 4);
+                }
+                else
+                {
+                    o->write_characters("false", 5);
+                }
+                return;
+            }
+
+            case value_t::number_integer:
+            {
+                dump_integer(val.m_value.number_integer);
+                return;
+            }
+
+            case value_t::number_unsigned:
+            {
+                dump_integer(val.m_value.number_unsigned);
+                return;
+            }
+
+            case value_t::number_float:
+            {
+                dump_float(val.m_value.number_float);
+                return;
+            }
+
+            case value_t::discarded:
+            {
+                o->write_characters("<discarded>", 11);
+                return;
+            }
+
+            case value_t::null:
+            {
+                o->write_characters("null", 4);
+                return;
+            }
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false);  // LCOV_EXCL_LINE
+        }
+    }
+
+  private:
+    /*!
+    @brief dump escaped string
+
+    Escape a string by replacing certain special characters by a sequence of an
+    escape character (backslash) and another character and other control
+    characters by a sequence of "\u" followed by a four-digit hex
+    representation. The escaped string is written to output stream @a o.
+
+    @param[in] s  the string to escape
+    @param[in] ensure_ascii  whether to escape non-ASCII characters with
+                             \uXXXX sequences
+
+    @complexity Linear in the length of string @a s.
+    */
+    void dump_escaped(const string_t& s, const bool ensure_ascii)
+    {
+        std::uint32_t codepoint;
+        std::uint8_t state = UTF8_ACCEPT;
+        std::size_t bytes = 0;  // number of bytes written to string_buffer
+
+        // number of bytes written at the point of the last valid byte
+        std::size_t bytes_after_last_accept = 0;
+        std::size_t undumped_chars = 0;
+
+        for (std::size_t i = 0; i < s.size(); ++i)
+        {
+            const auto byte = static_cast<uint8_t>(s[i]);
+
+            switch (decode(state, codepoint, byte))
+            {
+                case UTF8_ACCEPT:  // decode found a new code point
+                {
+                    switch (codepoint)
+                    {
+                        case 0x08: // backspace
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'b';
+                            break;
+                        }
+
+                        case 0x09: // horizontal tab
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 't';
+                            break;
+                        }
+
+                        case 0x0A: // newline
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'n';
+                            break;
+                        }
+
+                        case 0x0C: // formfeed
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'f';
+                            break;
+                        }
+
+                        case 0x0D: // carriage return
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'r';
+                            break;
+                        }
+
+                        case 0x22: // quotation mark
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\"';
+                            break;
+                        }
+
+                        case 0x5C: // reverse solidus
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\\';
+                            break;
+                        }
+
+                        default:
+                        {
+                            // escape control characters (0x00..0x1F) or, if
+                            // ensure_ascii parameter is used, non-ASCII characters
+                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
+                            {
+                                if (codepoint <= 0xFFFF)
+                                {
+                                    (std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                                    static_cast<std::uint16_t>(codepoint));
+                                    bytes += 6;
+                                }
+                                else
+                                {
+                                    (std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                                    static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
+                                                    static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu)));
+                                    bytes += 12;
+                                }
+                            }
+                            else
+                            {
+                                // copy byte to buffer (all previous bytes
+                                // been copied have in default case above)
+                                string_buffer[bytes++] = s[i];
+                            }
+                            break;
+                        }
+                    }
+
+                    // write buffer and reset index; there must be 13 bytes
+                    // left, as this is the maximal number of bytes to be
+                    // written ("\uxxxx\uxxxx\0") for one code point
+                    if (string_buffer.size() - bytes < 13)
+                    {
+                        o->write_characters(string_buffer.data(), bytes);
+                        bytes = 0;
+                    }
+
+                    // remember the byte position of this accept
+                    bytes_after_last_accept = bytes;
+                    undumped_chars = 0;
+                    break;
+                }
+
+                case UTF8_REJECT:  // decode found invalid UTF-8 byte
+                {
+                    switch (error_handler)
+                    {
+                        case error_handler_t::strict:
+                        {
+                            std::string sn(3, '\0');
+                            (std::snprintf)(&sn[0], sn.size(), "%.2X", byte);
+                            JSON_THROW(type_error::create(316, "invalid UTF-8 byte at index " + std::to_string(i) + ": 0x" + sn));
+                        }
+
+                        case error_handler_t::ignore:
+                        case error_handler_t::replace:
+                        {
+                            // in case we saw this character the first time, we
+                            // would like to read it again, because the byte
+                            // may be OK for itself, but just not OK for the
+                            // previous sequence
+                            if (undumped_chars > 0)
+                            {
+                                --i;
+                            }
+
+                            // reset length buffer to the last accepted index;
+                            // thus removing/ignoring the invalid characters
+                            bytes = bytes_after_last_accept;
+
+                            if (error_handler == error_handler_t::replace)
+                            {
+                                // add a replacement character
+                                if (ensure_ascii)
+                                {
+                                    string_buffer[bytes++] = '\\';
+                                    string_buffer[bytes++] = 'u';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'd';
+                                }
+                                else
+                                {
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
+                                }
+
+                                // write buffer and reset index; there must be 13 bytes
+                                // left, as this is the maximal number of bytes to be
+                                // written ("\uxxxx\uxxxx\0") for one code point
+                                if (string_buffer.size() - bytes < 13)
+                                {
+                                    o->write_characters(string_buffer.data(), bytes);
+                                    bytes = 0;
+                                }
+
+                                bytes_after_last_accept = bytes;
+                            }
+
+                            undumped_chars = 0;
+
+                            // continue processing the string
+                            state = UTF8_ACCEPT;
+                            break;
+                        }
+
+                        default:            // LCOV_EXCL_LINE
+                            JSON_ASSERT(false);  // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+
+                default:  // decode found yet incomplete multi-byte code point
+                {
+                    if (!ensure_ascii)
+                    {
+                        // code point will not be escaped - copy byte to buffer
+                        string_buffer[bytes++] = s[i];
+                    }
+                    ++undumped_chars;
+                    break;
+                }
+            }
+        }
+
+        // we finished processing the string
+        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
+        {
+            // write buffer
+            if (bytes > 0)
+            {
+                o->write_characters(string_buffer.data(), bytes);
+            }
+        }
+        else
+        {
+            // we finish reading, but do not accept: string was incomplete
+            switch (error_handler)
+            {
+                case error_handler_t::strict:
+                {
+                    std::string sn(3, '\0');
+                    (std::snprintf)(&sn[0], sn.size(), "%.2X", static_cast<std::uint8_t>(s.back()));
+                    JSON_THROW(type_error::create(316, "incomplete UTF-8 string; last byte: 0x" + sn));
+                }
+
+                case error_handler_t::ignore:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    break;
+                }
+
+                case error_handler_t::replace:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    // add a replacement character
+                    if (ensure_ascii)
+                    {
+                        o->write_characters("\\ufffd", 6);
+                    }
+                    else
+                    {
+                        o->write_characters("\xEF\xBF\xBD", 3);
+                    }
+                    break;
+                }
+
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false);  // LCOV_EXCL_LINE
+            }
+        }
+    }
+
+    /*!
+    @brief count digits
+
+    Count the number of decimal (base 10) digits for an input unsigned integer.
+
+    @param[in] x  unsigned integer number to count its digits
+    @return    number of decimal digits
+    */
+    inline unsigned int count_digits(number_unsigned_t x) noexcept
+    {
+        unsigned int n_digits = 1;
+        for (;;)
+        {
+            if (x < 10)
+            {
+                return n_digits;
+            }
+            if (x < 100)
+            {
+                return n_digits + 1;
+            }
+            if (x < 1000)
+            {
+                return n_digits + 2;
+            }
+            if (x < 10000)
+            {
+                return n_digits + 3;
+            }
+            x = x / 10000u;
+            n_digits += 4;
+        }
+    }
+
+    /*!
+    @brief dump an integer
+
+    Dump a given integer to output stream @a o. Works internally with
+    @a number_buffer.
+
+    @param[in] x  integer number (signed or unsigned) to dump
+    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
+    */
+    template < typename NumberType, detail::enable_if_t <
+                   std::is_same<NumberType, number_unsigned_t>::value ||
+                   std::is_same<NumberType, number_integer_t>::value ||
+                   std::is_same<NumberType, binary_char_t>::value,
+                   int > = 0 >
+    void dump_integer(NumberType x)
+    {
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        {
+            {
+                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            }
+        };
+
+        // special case for "0"
+        if (x == 0)
+        {
+            o->write_character('0');
+            return;
+        }
+
+        // use a pointer to fill the buffer
+        auto buffer_ptr = number_buffer.begin();
+
+        const bool is_negative = std::is_same<NumberType, number_integer_t>::value && !(x >= 0); // see issue #755
+        number_unsigned_t abs_value;
+
+        unsigned int n_chars;
+
+        if (is_negative)
+        {
+            *buffer_ptr = '-';
+            abs_value = remove_sign(static_cast<number_integer_t>(x));
+
+            // account one more byte for the minus sign
+            n_chars = 1 + count_digits(abs_value);
+        }
+        else
+        {
+            abs_value = static_cast<number_unsigned_t>(x);
+            n_chars = count_digits(abs_value);
+        }
+
+        // spare 1 byte for '\0'
+        JSON_ASSERT(n_chars < number_buffer.size() - 1);
+
+        // jump to the end to generate the string from backward
+        // so we later avoid reversing the result
+        buffer_ptr += n_chars;
+
+        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
+        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
+        while (abs_value >= 100)
+        {
+            const auto digits_index = static_cast<unsigned>((abs_value % 100));
+            abs_value /= 100;
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+
+        if (abs_value >= 10)
+        {
+            const auto digits_index = static_cast<unsigned>(abs_value);
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+        else
+        {
+            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
+        }
+
+        o->write_characters(number_buffer.data(), n_chars);
+    }
+
+    /*!
+    @brief dump a floating-point number
+
+    Dump a given floating-point number to output stream @a o. Works internally
+    with @a number_buffer.
+
+    @param[in] x  floating-point number to dump
+    */
+    void dump_float(number_float_t x)
+    {
+        // NaN / inf
+        if (!std::isfinite(x))
+        {
+            o->write_characters("null", 4);
+            return;
+        }
+
+        // If number_float_t is an IEEE-754 single or double precision number,
+        // use the Grisu2 algorithm to produce short numbers which are
+        // guaranteed to round-trip, using strtof and strtod, resp.
+        //
+        // NB: The test below works if <long double> == <double>.
+        static constexpr bool is_ieee_single_or_double
+            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+
+        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
+    }
+
+    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
+    {
+        char* begin = number_buffer.data();
+        char* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
+
+        o->write_characters(begin, static_cast<size_t>(end - begin));
+    }
+
+    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
+    {
+        // get number of digits for a float -> text -> float round-trip
+        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
+
+        // the actual conversion
+        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
+
+        // negative value indicates an error
+        JSON_ASSERT(len > 0);
+        // check if buffer was large enough
+        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
+
+        // erase thousands separator
+        if (thousands_sep != '\0')
+        {
+            const auto end = std::remove(number_buffer.begin(),
+                                         number_buffer.begin() + len, thousands_sep);
+            std::fill(end, number_buffer.end(), '\0');
+            JSON_ASSERT((end - number_buffer.begin()) <= len);
+            len = (end - number_buffer.begin());
+        }
+
+        // convert decimal point to '.'
+        if (decimal_point != '\0' && decimal_point != '.')
+        {
+            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            if (dec_pos != number_buffer.end())
+            {
+                *dec_pos = '.';
+            }
+        }
+
+        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
+
+        // determine if need to append ".0"
+        const bool value_is_int_like =
+            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
+                         [](char c)
+        {
+            return c == '.' || c == 'e';
+        });
+
+        if (value_is_int_like)
+        {
+            o->write_characters(".0", 2);
+        }
+    }
+
+    /*!
+    @brief check whether a string is UTF-8 encoded
+
+    The function checks each byte of a string whether it is UTF-8 encoded. The
+    result of the check is stored in the @a state parameter. The function must
+    be called initially with state 0 (accept). State 1 means the string must
+    be rejected, because the current byte is not allowed. If the string is
+    completely processed, but the state is non-zero, the string ended
+    prematurely; that is, the last byte indicated more bytes should have
+    followed.
+
+    @param[in,out] state  the state of the decoding
+    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
+    @param[in] byte       next byte to decode
+    @return               new state
+
+    @note The function has been edited: a std::array is used.
+
+    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+    */
+    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
+    {
+        static const std::array<std::uint8_t, 400> utf8d =
+        {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            }
+        };
+
+        const std::uint8_t type = utf8d[byte];
+
+        codep = (state != UTF8_ACCEPT)
+                ? (byte & 0x3fu) | (codep << 6u)
+                : (0xFFu >> type) & (byte);
+
+        std::size_t index = 256u + static_cast<size_t>(state) * 16u + static_cast<size_t>(type);
+        JSON_ASSERT(index < 400);
+        state = utf8d[index];
+        return state;
+    }
+
+    /*
+     * Overload to make the compiler happy while it is instantiating
+     * dump_integer for number_unsigned_t.
+     * Must never be called.
+     */
+    number_unsigned_t remove_sign(number_unsigned_t x)
+    {
+        JSON_ASSERT(false); // LCOV_EXCL_LINE
+        return x; // LCOV_EXCL_LINE
+    }
+
+    /*
+     * Helper function for dump_integer
+     *
+     * This function takes a negative signed integer and returns its absolute
+     * value as unsigned integer. The plus/minus shuffling is necessary as we can
+     * not directly remove the sign of an arbitrary signed integer as the
+     * absolute values of INT_MIN and INT_MAX are usually not the same. See
+     * #1708 for details.
+     */
+    inline number_unsigned_t remove_sign(number_integer_t x) noexcept
+    {
+        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)());
+        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
+    }
+
+  private:
+    /// the output of the serializer
+    output_adapter_t<char> o = nullptr;
+
+    /// a (hopefully) large enough character buffer
+    std::array<char, 64> number_buffer{{}};
+
+    /// the locale
+    const std::lconv* loc = nullptr;
+    /// the locale's thousand separator character
+    const char thousands_sep = '\0';
+    /// the locale's decimal point character
+    const char decimal_point = '\0';
+
+    /// string buffer
+    std::array<char, 512> string_buffer{{}};
+
+    /// the indentation character
+    const char indent_char;
+    /// the indentation string
+    string_t indent_string;
+
+    /// error_handler how to react on decoding errors
+    const error_handler_t error_handler;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/value_t.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+
+// #include <nlohmann/ordered_map.hpp>
+
+
+#include <functional> // less
+#include <memory> // allocator
+#include <utility> // pair
+#include <vector> // vector
+
+namespace nlohmann
+{
+
+/// ordered_map: a minimal map-like container that preserves insertion order
+/// for use within nlohmann::basic_json<ordered_map>
+template <class Key, class T, class IgnoredLess = std::less<Key>,
+          class Allocator = std::allocator<std::pair<const Key, T>>>
+                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
+{
+    using key_type = Key;
+    using mapped_type = T;
+    using Container = std::vector<std::pair<const Key, T>, Allocator>;
+    using typename Container::iterator;
+    using typename Container::const_iterator;
+    using typename Container::size_type;
+    using typename Container::value_type;
+
+    // Explicit constructors instead of `using Container::Container`
+    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
+    ordered_map(const Allocator& alloc = Allocator()) : Container{alloc} {}
+    template <class It>
+    ordered_map(It first, It last, const Allocator& alloc = Allocator())
+        : Container{first, last, alloc} {}
+    ordered_map(std::initializer_list<T> init, const Allocator& alloc = Allocator() )
+        : Container{init, alloc} {}
+
+    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(key, t);
+        return {--this->end(), true};
+    }
+
+    T& operator[](const Key& key)
+    {
+        return emplace(key, T{}).first->second;
+    }
+
+    const T& operator[](const Key& key) const
+    {
+        return at(key);
+    }
+
+    T& at(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it->second;
+            }
+        }
+
+        throw std::out_of_range("key not found");
+    }
+
+    const T& at(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it->second;
+            }
+        }
+
+        throw std::out_of_range("key not found");
+    }
+
+    size_type erase(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator erase(iterator pos)
+    {
+        auto it = pos;
+
+        // Since we cannot move const Keys, re-construct them in place
+        for (auto next = it; ++next != this->end(); ++it)
+        {
+            it->~value_type(); // Destroy but keep allocation
+            new (&*it) value_type{std::move(*next)};
+        }
+        Container::pop_back();
+        return pos;
+    }
+
+    size_type count(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator find(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    const_iterator find(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    std::pair<iterator, bool> insert( value_type&& value )
+    {
+        return emplace(value.first, std::move(value.second));
+    }
+
+    std::pair<iterator, bool> insert( const value_type& value )
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == value.first)
+            {
+                return {it, false};
+            }
+        }
+        Container::push_back(value);
+        return {--this->end(), true};
+    }
+};
+
+}  // namespace nlohmann
+
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+namespace nlohmann
+{
+
+/*!
+@brief a class to store JSON values
+
+@tparam ObjectType type for JSON objects (`std::map` by default; will be used
+in @ref object_t)
+@tparam ArrayType type for JSON arrays (`std::vector` by default; will be used
+in @ref array_t)
+@tparam StringType type for JSON strings and object keys (`std::string` by
+default; will be used in @ref string_t)
+@tparam BooleanType type for JSON booleans (`bool` by default; will be used
+in @ref boolean_t)
+@tparam NumberIntegerType type for JSON integer numbers (`int64_t` by
+default; will be used in @ref number_integer_t)
+@tparam NumberUnsignedType type for JSON unsigned integer numbers (@c
+`uint64_t` by default; will be used in @ref number_unsigned_t)
+@tparam NumberFloatType type for JSON floating-point numbers (`double` by
+default; will be used in @ref number_float_t)
+@tparam BinaryType type for packed binary data for compatibility with binary
+serialization formats (`std::vector<std::uint8_t>` by default; will be used in
+@ref binary_t)
+@tparam AllocatorType type of the allocator to use (`std::allocator` by
+default)
+@tparam JSONSerializer the serializer to resolve internal calls to `to_json()`
+and `from_json()` (@ref adl_serializer by default)
+
+@requirement The class satisfies the following concept requirements:
+- Basic
+ - [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible):
+   JSON values can be default constructed. The result will be a JSON null
+   value.
+ - [MoveConstructible](https://en.cppreference.com/w/cpp/named_req/MoveConstructible):
+   A JSON value can be constructed from an rvalue argument.
+ - [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible):
+   A JSON value can be copy-constructed from an lvalue expression.
+ - [MoveAssignable](https://en.cppreference.com/w/cpp/named_req/MoveAssignable):
+   A JSON value van be assigned from an rvalue argument.
+ - [CopyAssignable](https://en.cppreference.com/w/cpp/named_req/CopyAssignable):
+   A JSON value can be copy-assigned from an lvalue expression.
+ - [Destructible](https://en.cppreference.com/w/cpp/named_req/Destructible):
+   JSON values can be destructed.
+- Layout
+ - [StandardLayoutType](https://en.cppreference.com/w/cpp/named_req/StandardLayoutType):
+   JSON values have
+   [standard layout](https://en.cppreference.com/w/cpp/language/data_members#Standard_layout):
+   All non-static data members are private and standard layout types, the
+   class has no virtual functions or (virtual) base classes.
+- Library-wide
+ - [EqualityComparable](https://en.cppreference.com/w/cpp/named_req/EqualityComparable):
+   JSON values can be compared with `==`, see @ref
+   operator==(const_reference,const_reference).
+ - [LessThanComparable](https://en.cppreference.com/w/cpp/named_req/LessThanComparable):
+   JSON values can be compared with `<`, see @ref
+   operator<(const_reference,const_reference).
+ - [Swappable](https://en.cppreference.com/w/cpp/named_req/Swappable):
+   Any JSON lvalue or rvalue of can be swapped with any lvalue or rvalue of
+   other compatible types, using unqualified function call @ref swap().
+ - [NullablePointer](https://en.cppreference.com/w/cpp/named_req/NullablePointer):
+   JSON values can be compared against `std::nullptr_t` objects which are used
+   to model the `null` value.
+- Container
+ - [Container](https://en.cppreference.com/w/cpp/named_req/Container):
+   JSON values can be used like STL containers and provide iterator access.
+ - [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer);
+   JSON values can be used like STL containers and provide reverse iterator
+   access.
+
+@invariant The member variables @a m_value and @a m_type have the following
+relationship:
+- If `m_type == value_t::object`, then `m_value.object != nullptr`.
+- If `m_type == value_t::array`, then `m_value.array != nullptr`.
+- If `m_type == value_t::string`, then `m_value.string != nullptr`.
+The invariants are checked by member function assert_invariant().
+
+@internal
+@note ObjectType trick from https://stackoverflow.com/a/9860911
+@endinternal
+
+@see [RFC 7159: The JavaScript Object Notation (JSON) Data Interchange
+Format](http://rfc7159.net/rfc7159)
+
+@since version 1.0.0
+
+@nosubgrouping
+*/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+class basic_json
+{
+  private:
+    template<detail::value_t> friend struct detail::external_constructor;
+    friend ::nlohmann::json_pointer<basic_json>;
+
+    template<typename BasicJsonType, typename InputType>
+    friend class ::nlohmann::detail::parser;
+    friend ::nlohmann::detail::serializer<basic_json>;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::iter_impl;
+    template<typename BasicJsonType, typename CharType>
+    friend class ::nlohmann::detail::binary_writer;
+    template<typename BasicJsonType, typename InputType, typename SAX>
+    friend class ::nlohmann::detail::binary_reader;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_parser;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
+
+    /// workaround type for MSVC
+    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
+
+    // convenience aliases for types residing in namespace detail;
+    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
+
+    template<typename InputAdapterType>
+    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
+        InputAdapterType adapter,
+        detail::parser_callback_t<basic_json>cb = nullptr,
+        const bool allow_exceptions = true,
+        const bool ignore_comments = false
+                                 )
+    {
+        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
+                std::move(cb), allow_exceptions, ignore_comments);
+    }
+
+    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
+    template<typename BasicJsonType>
+    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
+    template<typename BasicJsonType>
+    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
+    template<typename Iterator>
+    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
+    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
+
+    template<typename CharType>
+    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
+
+    template<typename InputType>
+    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
+    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
+
+    using serializer = ::nlohmann::detail::serializer<basic_json>;
+
+  public:
+    using value_t = detail::value_t;
+    /// JSON Pointer, see @ref nlohmann::json_pointer
+    using json_pointer = ::nlohmann::json_pointer<basic_json>;
+    template<typename T, typename SFINAE>
+    using json_serializer = JSONSerializer<T, SFINAE>;
+    /// how to treat decoding errors
+    using error_handler_t = detail::error_handler_t;
+    /// how to treat CBOR tags
+    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
+    /// helper type for initializer lists of basic_json values
+    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
+
+    using input_format_t = detail::input_format_t;
+    /// SAX interface type, see @ref nlohmann::json_sax
+    using json_sax_t = json_sax<basic_json>;
+
+    ////////////////
+    // exceptions //
+    ////////////////
+
+    /// @name exceptions
+    /// Classes to implement user-defined exceptions.
+    /// @{
+
+    /// @copydoc detail::exception
+    using exception = detail::exception;
+    /// @copydoc detail::parse_error
+    using parse_error = detail::parse_error;
+    /// @copydoc detail::invalid_iterator
+    using invalid_iterator = detail::invalid_iterator;
+    /// @copydoc detail::type_error
+    using type_error = detail::type_error;
+    /// @copydoc detail::out_of_range
+    using out_of_range = detail::out_of_range;
+    /// @copydoc detail::other_error
+    using other_error = detail::other_error;
+
+    /// @}
+
+
+    /////////////////////
+    // container types //
+    /////////////////////
+
+    /// @name container types
+    /// The canonic container types to use @ref basic_json like any other STL
+    /// container.
+    /// @{
+
+    /// the type of elements in a basic_json container
+    using value_type = basic_json;
+
+    /// the type of an element reference
+    using reference = value_type&;
+    /// the type of an element const reference
+    using const_reference = const value_type&;
+
+    /// a type to represent differences between iterators
+    using difference_type = std::ptrdiff_t;
+    /// a type to represent container sizes
+    using size_type = std::size_t;
+
+    /// the allocator type
+    using allocator_type = AllocatorType<basic_json>;
+
+    /// the type of an element pointer
+    using pointer = typename std::allocator_traits<allocator_type>::pointer;
+    /// the type of an element const pointer
+    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
+
+    /// an iterator for a basic_json container
+    using iterator = iter_impl<basic_json>;
+    /// a const iterator for a basic_json container
+    using const_iterator = iter_impl<const basic_json>;
+    /// a reverse iterator for a basic_json container
+    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
+    /// a const reverse iterator for a basic_json container
+    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
+
+    /// @}
+
+
+    /*!
+    @brief returns the allocator associated with the container
+    */
+    static allocator_type get_allocator()
+    {
+        return allocator_type();
+    }
+
+    /*!
+    @brief returns version information on the library
+
+    This function returns a JSON object with information about the library,
+    including the version number and information on the platform and compiler.
+
+    @return JSON object holding version information
+    key         | description
+    ----------- | ---------------
+    `compiler`  | Information on the used compiler. It is an object with the following keys: `c++` (the used C++ standard), `family` (the compiler family; possible values are `clang`, `icc`, `gcc`, `ilecpp`, `msvc`, `pgcpp`, `sunpro`, and `unknown`), and `version` (the compiler version).
+    `copyright` | The copyright line for the library as string.
+    `name`      | The name of the library as string.
+    `platform`  | The used platform as string. Possible values are `win32`, `linux`, `apple`, `unix`, and `unknown`.
+    `url`       | The URL of the project as string.
+    `version`   | The version of the library. It is an object with the following keys: `major`, `minor`, and `patch` as defined by [Semantic Versioning](http://semver.org), and `string` (the version string).
+
+    @liveexample{The following code shows an example output of the `meta()`
+    function.,meta}
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @complexity Constant.
+
+    @since 2.1.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json meta()
+    {
+        basic_json result;
+
+        result["copyright"] = "(C) 2013-2020 Niels Lohmann";
+        result["name"] = "JSON for Modern C++";
+        result["url"] = "https://github.com/nlohmann/json";
+        result["version"]["string"] =
+            std::to_string(NLOHMANN_JSON_VERSION_MAJOR) + "." +
+            std::to_string(NLOHMANN_JSON_VERSION_MINOR) + "." +
+            std::to_string(NLOHMANN_JSON_VERSION_PATCH);
+        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
+        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
+        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
+
+#ifdef _WIN32
+        result["platform"] = "win32";
+#elif defined __linux__
+        result["platform"] = "linux";
+#elif defined __APPLE__
+        result["platform"] = "apple";
+#elif defined __unix__
+        result["platform"] = "unix";
+#else
+        result["platform"] = "unknown";
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER)
+        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
+#elif defined(__clang__)
+        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
+#elif defined(__GNUC__) || defined(__GNUG__)
+        result["compiler"] = {{"family", "gcc"}, {"version", std::to_string(__GNUC__) + "." + std::to_string(__GNUC_MINOR__) + "." + std::to_string(__GNUC_PATCHLEVEL__)}};
+#elif defined(__HP_cc) || defined(__HP_aCC)
+        result["compiler"] = "hp"
+#elif defined(__IBMCPP__)
+        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
+#elif defined(_MSC_VER)
+        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
+#elif defined(__PGI)
+        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
+#elif defined(__SUNPRO_CC)
+        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
+#else
+        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
+#endif
+
+#ifdef __cplusplus
+        result["compiler"]["c++"] = std::to_string(__cplusplus);
+#else
+        result["compiler"]["c++"] = "unknown";
+#endif
+        return result;
+    }
+
+
+    ///////////////////////////
+    // JSON value data types //
+    ///////////////////////////
+
+    /// @name JSON value data types
+    /// The data types to store a JSON value. These types are derived from
+    /// the template arguments passed to class @ref basic_json.
+    /// @{
+
+#if defined(JSON_HAS_CPP_14)
+    // Use transparent comparator if possible, combined with perfect forwarding
+    // on find() and count() calls prevents unnecessary string construction.
+    using object_comparator_t = std::less<>;
+#else
+    using object_comparator_t = std::less<StringType>;
+#endif
+
+    /*!
+    @brief a type for an object
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes JSON objects as follows:
+    > An object is an unordered collection of zero or more name/value pairs,
+    > where a name is a string and a value is a string, number, boolean, null,
+    > object, or array.
+
+    To store objects in C++, a type is defined by the template parameters
+    described below.
+
+    @tparam ObjectType  the container to store objects (e.g., `std::map` or
+    `std::unordered_map`)
+    @tparam StringType the type of the keys or names (e.g., `std::string`).
+    The comparison function `std::less<StringType>` is used to order elements
+    inside the container.
+    @tparam AllocatorType the allocator to use for objects (e.g.,
+    `std::allocator`)
+
+    #### Default type
+
+    With the default values for @a ObjectType (`std::map`), @a StringType
+    (`std::string`), and @a AllocatorType (`std::allocator`), the default
+    value for @a object_t is:
+
+    @code {.cpp}
+    std::map<
+      std::string, // key_type
+      basic_json, // value_type
+      std::less<std::string>, // key_compare
+      std::allocator<std::pair<const std::string, basic_json>> // allocator_type
+    >
+    @endcode
+
+    #### Behavior
+
+    The choice of @a object_t influences the behavior of the JSON class. With
+    the default type, objects have the following behavior:
+
+    - When all names are unique, objects will be interoperable in the sense
+      that all software implementations receiving that object will agree on
+      the name-value mappings.
+    - When the names within an object are not unique, it is unspecified which
+      one of the values for a given key will be chosen. For instance,
+      `{"key": 2, "key": 1}` could be equal to either `{"key": 1}` or
+      `{"key": 2}`.
+    - Internally, name/value pairs are stored in lexicographical order of the
+      names. Objects will also be serialized (see @ref dump) in this order.
+      For instance, `{"b": 1, "a": 2}` and `{"a": 2, "b": 1}` will be stored
+      and serialized as `{"a": 2, "b": 1}`.
+    - When comparing objects, the order of the name/value pairs is irrelevant.
+      This makes objects interoperable in the sense that they will not be
+      affected by these differences. For instance, `{"b": 1, "a": 2}` and
+      `{"a": 2, "b": 1}` will be treated as equal.
+
+    #### Limits
+
+    [RFC 7159](http://rfc7159.net/rfc7159) specifies:
+    > An implementation may set limits on the maximum depth of nesting.
+
+    In this class, the object's limit of nesting is not explicitly constrained.
+    However, a maximum depth of nesting may be introduced by the compiler or
+    runtime environment. A theoretical limit can be queried by calling the
+    @ref max_size function of a JSON object.
+
+    #### Storage
+
+    Objects are stored as pointers in a @ref basic_json type. That is, for any
+    access to object values, a pointer of type `object_t*` must be
+    dereferenced.
+
+    @sa @ref array_t -- type for an array value
+
+    @since version 1.0.0
+
+    @note The order name/value pairs are added to the object is *not*
+    preserved by the library. Therefore, iterating an object may return
+    name/value pairs in a different order than they were originally stored. In
+    fact, keys will be traversed in alphabetical order as `std::map` with
+    `std::less` is used by default. Please note this behavior conforms to [RFC
+    7159](http://rfc7159.net/rfc7159), because any order implements the
+    specified "unordered" nature of JSON objects.
+    */
+    using object_t = ObjectType<StringType,
+          basic_json,
+          object_comparator_t,
+          AllocatorType<std::pair<const StringType,
+          basic_json>>>;
+
+    /*!
+    @brief a type for an array
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes JSON arrays as follows:
+    > An array is an ordered sequence of zero or more values.
+
+    To store objects in C++, a type is defined by the template parameters
+    explained below.
+
+    @tparam ArrayType  container type to store arrays (e.g., `std::vector` or
+    `std::list`)
+    @tparam AllocatorType allocator to use for arrays (e.g., `std::allocator`)
+
+    #### Default type
+
+    With the default values for @a ArrayType (`std::vector`) and @a
+    AllocatorType (`std::allocator`), the default value for @a array_t is:
+
+    @code {.cpp}
+    std::vector<
+      basic_json, // value_type
+      std::allocator<basic_json> // allocator_type
+    >
+    @endcode
+
+    #### Limits
+
+    [RFC 7159](http://rfc7159.net/rfc7159) specifies:
+    > An implementation may set limits on the maximum depth of nesting.
+
+    In this class, the array's limit of nesting is not explicitly constrained.
+    However, a maximum depth of nesting may be introduced by the compiler or
+    runtime environment. A theoretical limit can be queried by calling the
+    @ref max_size function of a JSON array.
+
+    #### Storage
+
+    Arrays are stored as pointers in a @ref basic_json type. That is, for any
+    access to array values, a pointer of type `array_t*` must be dereferenced.
+
+    @sa @ref object_t -- type for an object value
+
+    @since version 1.0.0
+    */
+    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+    /*!
+    @brief a type for a string
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes JSON strings as follows:
+    > A string is a sequence of zero or more Unicode characters.
+
+    To store objects in C++, a type is defined by the template parameter
+    described below. Unicode values are split by the JSON class into
+    byte-sized characters during deserialization.
+
+    @tparam StringType  the container to store strings (e.g., `std::string`).
+    Note this container is used for keys/names in objects, see @ref object_t.
+
+    #### Default type
+
+    With the default values for @a StringType (`std::string`), the default
+    value for @a string_t is:
+
+    @code {.cpp}
+    std::string
+    @endcode
+
+    #### Encoding
+
+    Strings are stored in UTF-8 encoding. Therefore, functions like
+    `std::string::size()` or `std::string::length()` return the number of
+    bytes in the string rather than the number of characters or glyphs.
+
+    #### String comparison
+
+    [RFC 7159](http://rfc7159.net/rfc7159) states:
+    > Software implementations are typically required to test names of object
+    > members for equality. Implementations that transform the textual
+    > representation into sequences of Unicode code units and then perform the
+    > comparison numerically, code unit by code unit, are interoperable in the
+    > sense that implementations will agree in all cases on equality or
+    > inequality of two strings. For example, implementations that compare
+    > strings with escaped characters unconverted may incorrectly find that
+    > `"a\\b"` and `"a\u005Cb"` are not equal.
+
+    This implementation is interoperable as it does compare strings code unit
+    by code unit.
+
+    #### Storage
+
+    String values are stored as pointers in a @ref basic_json type. That is,
+    for any access to string values, a pointer of type `string_t*` must be
+    dereferenced.
+
+    @since version 1.0.0
+    */
+    using string_t = StringType;
+
+    /*!
+    @brief a type for a boolean
+
+    [RFC 7159](http://rfc7159.net/rfc7159) implicitly describes a boolean as a
+    type which differentiates the two literals `true` and `false`.
+
+    To store objects in C++, a type is defined by the template parameter @a
+    BooleanType which chooses the type to use.
+
+    #### Default type
+
+    With the default values for @a BooleanType (`bool`), the default value for
+    @a boolean_t is:
+
+    @code {.cpp}
+    bool
+    @endcode
+
+    #### Storage
+
+    Boolean values are stored directly inside a @ref basic_json type.
+
+    @since version 1.0.0
+    */
+    using boolean_t = BooleanType;
+
+    /*!
+    @brief a type for a number (integer)
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes numbers as follows:
+    > The representation of numbers is similar to that used in most
+    > programming languages. A number is represented in base 10 using decimal
+    > digits. It contains an integer component that may be prefixed with an
+    > optional minus sign, which may be followed by a fraction part and/or an
+    > exponent part. Leading zeros are not allowed. (...) Numeric values that
+    > cannot be represented in the grammar below (such as Infinity and NaN)
+    > are not permitted.
+
+    This description includes both integer and floating-point numbers.
+    However, C++ allows more precise storage if it is known whether the number
+    is a signed integer, an unsigned integer or a floating-point number.
+    Therefore, three different types, @ref number_integer_t, @ref
+    number_unsigned_t and @ref number_float_t are used.
+
+    To store integer numbers in C++, a type is defined by the template
+    parameter @a NumberIntegerType which chooses the type to use.
+
+    #### Default type
+
+    With the default values for @a NumberIntegerType (`int64_t`), the default
+    value for @a number_integer_t is:
+
+    @code {.cpp}
+    int64_t
+    @endcode
+
+    #### Default behavior
+
+    - The restrictions about leading zeros is not enforced in C++. Instead,
+      leading zeros in integer literals lead to an interpretation as octal
+      number. Internally, the value will be stored as decimal number. For
+      instance, the C++ integer literal `010` will be serialized to `8`.
+      During deserialization, leading zeros yield an error.
+    - Not-a-number (NaN) values will be serialized to `null`.
+
+    #### Limits
+
+    [RFC 7159](http://rfc7159.net/rfc7159) specifies:
+    > An implementation may set limits on the range and precision of numbers.
+
+    When the default type is used, the maximal integer number that can be
+    stored is `9223372036854775807` (INT64_MAX) and the minimal integer number
+    that can be stored is `-9223372036854775808` (INT64_MIN). Integer numbers
+    that are out of range will yield over/underflow when used in a
+    constructor. During deserialization, too large or small integer numbers
+    will be automatically be stored as @ref number_unsigned_t or @ref
+    number_float_t.
+
+    [RFC 7159](http://rfc7159.net/rfc7159) further states:
+    > Note that when such software is used, numbers that are integers and are
+    > in the range \f$[-2^{53}+1, 2^{53}-1]\f$ are interoperable in the sense
+    > that implementations will agree exactly on their numeric values.
+
+    As this range is a subrange of the exactly supported range [INT64_MIN,
+    INT64_MAX], this class's integer type is interoperable.
+
+    #### Storage
+
+    Integer number values are stored directly inside a @ref basic_json type.
+
+    @sa @ref number_float_t -- type for number values (floating-point)
+
+    @sa @ref number_unsigned_t -- type for number values (unsigned integer)
+
+    @since version 1.0.0
+    */
+    using number_integer_t = NumberIntegerType;
+
+    /*!
+    @brief a type for a number (unsigned)
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes numbers as follows:
+    > The representation of numbers is similar to that used in most
+    > programming languages. A number is represented in base 10 using decimal
+    > digits. It contains an integer component that may be prefixed with an
+    > optional minus sign, which may be followed by a fraction part and/or an
+    > exponent part. Leading zeros are not allowed. (...) Numeric values that
+    > cannot be represented in the grammar below (such as Infinity and NaN)
+    > are not permitted.
+
+    This description includes both integer and floating-point numbers.
+    However, C++ allows more precise storage if it is known whether the number
+    is a signed integer, an unsigned integer or a floating-point number.
+    Therefore, three different types, @ref number_integer_t, @ref
+    number_unsigned_t and @ref number_float_t are used.
+
+    To store unsigned integer numbers in C++, a type is defined by the
+    template parameter @a NumberUnsignedType which chooses the type to use.
+
+    #### Default type
+
+    With the default values for @a NumberUnsignedType (`uint64_t`), the
+    default value for @a number_unsigned_t is:
+
+    @code {.cpp}
+    uint64_t
+    @endcode
+
+    #### Default behavior
+
+    - The restrictions about leading zeros is not enforced in C++. Instead,
+      leading zeros in integer literals lead to an interpretation as octal
+      number. Internally, the value will be stored as decimal number. For
+      instance, the C++ integer literal `010` will be serialized to `8`.
+      During deserialization, leading zeros yield an error.
+    - Not-a-number (NaN) values will be serialized to `null`.
+
+    #### Limits
+
+    [RFC 7159](http://rfc7159.net/rfc7159) specifies:
+    > An implementation may set limits on the range and precision of numbers.
+
+    When the default type is used, the maximal integer number that can be
+    stored is `18446744073709551615` (UINT64_MAX) and the minimal integer
+    number that can be stored is `0`. Integer numbers that are out of range
+    will yield over/underflow when used in a constructor. During
+    deserialization, too large or small integer numbers will be automatically
+    be stored as @ref number_integer_t or @ref number_float_t.
+
+    [RFC 7159](http://rfc7159.net/rfc7159) further states:
+    > Note that when such software is used, numbers that are integers and are
+    > in the range \f$[-2^{53}+1, 2^{53}-1]\f$ are interoperable in the sense
+    > that implementations will agree exactly on their numeric values.
+
+    As this range is a subrange (when considered in conjunction with the
+    number_integer_t type) of the exactly supported range [0, UINT64_MAX],
+    this class's integer type is interoperable.
+
+    #### Storage
+
+    Integer number values are stored directly inside a @ref basic_json type.
+
+    @sa @ref number_float_t -- type for number values (floating-point)
+    @sa @ref number_integer_t -- type for number values (integer)
+
+    @since version 2.0.0
+    */
+    using number_unsigned_t = NumberUnsignedType;
+
+    /*!
+    @brief a type for a number (floating-point)
+
+    [RFC 7159](http://rfc7159.net/rfc7159) describes numbers as follows:
+    > The representation of numbers is similar to that used in most
+    > programming languages. A number is represented in base 10 using decimal
+    > digits. It contains an integer component that may be prefixed with an
+    > optional minus sign, which may be followed by a fraction part and/or an
+    > exponent part. Leading zeros are not allowed. (...) Numeric values that
+    > cannot be represented in the grammar below (such as Infinity and NaN)
+    > are not permitted.
+
+    This description includes both integer and floating-point numbers.
+    However, C++ allows more precise storage if it is known whether the number
+    is a signed integer, an unsigned integer or a floating-point number.
+    Therefore, three different types, @ref number_integer_t, @ref
+    number_unsigned_t and @ref number_float_t are used.
+
+    To store floating-point numbers in C++, a type is defined by the template
+    parameter @a NumberFloatType which chooses the type to use.
+
+    #### Default type
+
+    With the default values for @a NumberFloatType (`double`), the default
+    value for @a number_float_t is:
+
+    @code {.cpp}
+    double
+    @endcode
+
+    #### Default behavior
+
+    - The restrictions about leading zeros is not enforced in C++. Instead,
+      leading zeros in floating-point literals will be ignored. Internally,
+      the value will be stored as decimal number. For instance, the C++
+      floating-point literal `01.2` will be serialized to `1.2`. During
+      deserialization, leading zeros yield an error.
+    - Not-a-number (NaN) values will be serialized to `null`.
+
+    #### Limits
+
+    [RFC 7159](http://rfc7159.net/rfc7159) states:
+    > This specification allows implementations to set limits on the range and
+    > precision of numbers accepted. Since software that implements IEEE
+    > 754-2008 binary64 (double precision) numbers is generally available and
+    > widely used, good interoperability can be achieved by implementations
+    > that expect no more precision or range than these provide, in the sense
+    > that implementations will approximate JSON numbers within the expected
+    > precision.
+
+    This implementation does exactly follow this approach, as it uses double
+    precision floating-point numbers. Note values smaller than
+    `-1.79769313486232e+308` and values greater than `1.79769313486232e+308`
+    will be stored as NaN internally and be serialized to `null`.
+
+    #### Storage
+
+    Floating-point number values are stored directly inside a @ref basic_json
+    type.
+
+    @sa @ref number_integer_t -- type for number values (integer)
+
+    @sa @ref number_unsigned_t -- type for number values (unsigned integer)
+
+    @since version 1.0.0
+    */
+    using number_float_t = NumberFloatType;
+
+    /*!
+    @brief a type for a packed binary type
+
+    This type is a type designed to carry binary data that appears in various
+    serialized formats, such as CBOR's Major Type 2, MessagePack's bin, and
+    BSON's generic binary subtype. This type is NOT a part of standard JSON and
+    exists solely for compatibility with these binary types. As such, it is
+    simply defined as an ordered sequence of zero or more byte values.
+
+    Additionally, as an implementation detail, the subtype of the binary data is
+    carried around as a `std::uint8_t`, which is compatible with both of the
+    binary data formats that use binary subtyping, (though the specific
+    numbering is incompatible with each other, and it is up to the user to
+    translate between them).
+
+    [CBOR's RFC 7049](https://tools.ietf.org/html/rfc7049) describes this type
+    as:
+    > Major type 2: a byte string. The string's length in bytes is represented
+    > following the rules for positive integers (major type 0).
+
+    [MessagePack's documentation on the bin type
+    family](https://github.com/msgpack/msgpack/blob/master/spec.md#bin-format-family)
+    describes this type as:
+    > Bin format family stores an byte array in 2, 3, or 5 bytes of extra bytes
+    > in addition to the size of the byte array.
+
+    [BSON's specifications](http://bsonspec.org/spec.html) describe several
+    binary types; however, this type is intended to represent the generic binary
+    type which has the description:
+    > Generic binary subtype - This is the most commonly used binary subtype and
+    > should be the 'default' for drivers and tools.
+
+    None of these impose any limitations on the internal representation other
+    than the basic unit of storage be some type of array whose parts are
+    decomposable into bytes.
+
+    The default representation of this binary format is a
+    `std::vector<std::uint8_t>`, which is a very common way to represent a byte
+    array in modern C++.
+
+    #### Default type
+
+    The default values for @a BinaryType is `std::vector<std::uint8_t>`
+
+    #### Storage
+
+    Binary Arrays are stored as pointers in a @ref basic_json type. That is,
+    for any access to array values, a pointer of the type `binary_t*` must be
+    dereferenced.
+
+    #### Notes on subtypes
+
+    - CBOR
+       - Binary values are represented as byte strings. No subtypes are
+         supported and will be ignored when CBOR is written.
+    - MessagePack
+       - If a subtype is given and the binary array contains exactly 1, 2, 4, 8,
+         or 16 elements, the fixext family (fixext1, fixext2, fixext4, fixext8)
+         is used. For other sizes, the ext family (ext8, ext16, ext32) is used.
+         The subtype is then added as singed 8-bit integer.
+       - If no subtype is given, the bin family (bin8, bin16, bin32) is used.
+    - BSON
+       - If a subtype is given, it is used and added as unsigned 8-bit integer.
+       - If no subtype is given, the generic binary subtype 0x00 is used.
+
+    @sa @ref binary -- create a binary array
+
+    @since version 3.8.0
+    */
+    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+    /// @}
+
+  private:
+
+    /// helper for exception-safe object creation
+    template<typename T, typename... Args>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    static T* create(Args&& ... args)
+    {
+        AllocatorType<T> alloc;
+        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
+
+        auto deleter = [&](T * object)
+        {
+            AllocatorTraits::deallocate(alloc, object, 1);
+        };
+        std::unique_ptr<T, decltype(deleter)> object(AllocatorTraits::allocate(alloc, 1), deleter);
+        AllocatorTraits::construct(alloc, object.get(), std::forward<Args>(args)...);
+        JSON_ASSERT(object != nullptr);
+        return object.release();
+    }
+
+    ////////////////////////
+    // JSON value storage //
+    ////////////////////////
+
+    /*!
+    @brief a JSON value
+
+    The actual storage for a JSON value of the @ref basic_json class. This
+    union combines the different storage types for the JSON value types
+    defined in @ref value_t.
+
+    JSON type | value_t type    | used type
+    --------- | --------------- | ------------------------
+    object    | object          | pointer to @ref object_t
+    array     | array           | pointer to @ref array_t
+    string    | string          | pointer to @ref string_t
+    boolean   | boolean         | @ref boolean_t
+    number    | number_integer  | @ref number_integer_t
+    number    | number_unsigned | @ref number_unsigned_t
+    number    | number_float    | @ref number_float_t
+    binary    | binary          | pointer to @ref binary_t
+    null      | null            | *no value is stored*
+
+    @note Variable-length types (objects, arrays, and strings) are stored as
+    pointers. The size of the union should not exceed 64 bits if the default
+    value types are used.
+
+    @since version 1.0.0
+    */
+    union json_value
+    {
+        /// object (stored with pointer to save storage)
+        object_t* object;
+        /// array (stored with pointer to save storage)
+        array_t* array;
+        /// string (stored with pointer to save storage)
+        string_t* string;
+        /// binary (stored with pointer to save storage)
+        binary_t* binary;
+        /// boolean
+        boolean_t boolean;
+        /// number (integer)
+        number_integer_t number_integer;
+        /// number (unsigned integer)
+        number_unsigned_t number_unsigned;
+        /// number (floating-point)
+        number_float_t number_float;
+
+        /// default constructor (for null values)
+        json_value() = default;
+        /// constructor for booleans
+        json_value(boolean_t v) noexcept : boolean(v) {}
+        /// constructor for numbers (integer)
+        json_value(number_integer_t v) noexcept : number_integer(v) {}
+        /// constructor for numbers (unsigned)
+        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
+        /// constructor for numbers (floating-point)
+        json_value(number_float_t v) noexcept : number_float(v) {}
+        /// constructor for empty values of a given type
+        json_value(value_t t)
+        {
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    object = create<object_t>();
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    array = create<array_t>();
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    string = create<string_t>("");
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    binary = create<binary_t>();
+                    break;
+                }
+
+                case value_t::boolean:
+                {
+                    boolean = boolean_t(false);
+                    break;
+                }
+
+                case value_t::number_integer:
+                {
+                    number_integer = number_integer_t(0);
+                    break;
+                }
+
+                case value_t::number_unsigned:
+                {
+                    number_unsigned = number_unsigned_t(0);
+                    break;
+                }
+
+                case value_t::number_float:
+                {
+                    number_float = number_float_t(0.0);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    break;
+                }
+
+                default:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
+                    {
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.9.1")); // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+            }
+        }
+
+        /// constructor for strings
+        json_value(const string_t& value)
+        {
+            string = create<string_t>(value);
+        }
+
+        /// constructor for rvalue strings
+        json_value(string_t&& value)
+        {
+            string = create<string_t>(std::move(value));
+        }
+
+        /// constructor for objects
+        json_value(const object_t& value)
+        {
+            object = create<object_t>(value);
+        }
+
+        /// constructor for rvalue objects
+        json_value(object_t&& value)
+        {
+            object = create<object_t>(std::move(value));
+        }
+
+        /// constructor for arrays
+        json_value(const array_t& value)
+        {
+            array = create<array_t>(value);
+        }
+
+        /// constructor for rvalue arrays
+        json_value(array_t&& value)
+        {
+            array = create<array_t>(std::move(value));
+        }
+
+        /// constructor for binary arrays
+        json_value(const typename binary_t::container_type& value)
+        {
+            binary = create<binary_t>(value);
+        }
+
+        /// constructor for rvalue binary arrays
+        json_value(typename binary_t::container_type&& value)
+        {
+            binary = create<binary_t>(std::move(value));
+        }
+
+        /// constructor for binary arrays (internal type)
+        json_value(const binary_t& value)
+        {
+            binary = create<binary_t>(value);
+        }
+
+        /// constructor for rvalue binary arrays (internal type)
+        json_value(binary_t&& value)
+        {
+            binary = create<binary_t>(std::move(value));
+        }
+
+        void destroy(value_t t) noexcept
+        {
+            // flatten the current json_value to a heap-allocated stack
+            std::vector<basic_json> stack;
+
+            // move the top-level items to stack
+            if (t == value_t::array)
+            {
+                stack.reserve(array->size());
+                std::move(array->begin(), array->end(), std::back_inserter(stack));
+            }
+            else if (t == value_t::object)
+            {
+                stack.reserve(object->size());
+                for (auto&& it : *object)
+                {
+                    stack.push_back(std::move(it.second));
+                }
+            }
+
+            while (!stack.empty())
+            {
+                // move the last item to local variable to be processed
+                basic_json current_item(std::move(stack.back()));
+                stack.pop_back();
+
+                // if current_item is array/object, move
+                // its children to the stack to be processed later
+                if (current_item.is_array())
+                {
+                    std::move(current_item.m_value.array->begin(), current_item.m_value.array->end(),
+                              std::back_inserter(stack));
+
+                    current_item.m_value.array->clear();
+                }
+                else if (current_item.is_object())
+                {
+                    for (auto&& it : *current_item.m_value.object)
+                    {
+                        stack.push_back(std::move(it.second));
+                    }
+
+                    current_item.m_value.object->clear();
+                }
+
+                // it's now safe that current_item get destructed
+                // since it doesn't have any children
+            }
+
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    AllocatorType<object_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    AllocatorType<array_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
+                    break;
+                }
+
+                default:
+                {
+                    break;
+                }
+            }
+        }
+    };
+
+    /*!
+    @brief checks the class invariants
+
+    This function asserts the class invariants. It needs to be called at the
+    end of every constructor to make sure that created objects respect the
+    invariant. Furthermore, it has to be called each time the type of a JSON
+    value is changed, because the invariant expresses a relationship between
+    @a m_type and @a m_value.
+    */
+    void assert_invariant() const noexcept
+    {
+        JSON_ASSERT(m_type != value_t::object || m_value.object != nullptr);
+        JSON_ASSERT(m_type != value_t::array || m_value.array != nullptr);
+        JSON_ASSERT(m_type != value_t::string || m_value.string != nullptr);
+        JSON_ASSERT(m_type != value_t::binary || m_value.binary != nullptr);
+    }
+
+  public:
+    //////////////////////////
+    // JSON parser callback //
+    //////////////////////////
+
+    /*!
+    @brief parser event types
+
+    The parser callback distinguishes the following events:
+    - `object_start`: the parser read `{` and started to process a JSON object
+    - `key`: the parser read a key of a value in an object
+    - `object_end`: the parser read `}` and finished processing a JSON object
+    - `array_start`: the parser read `[` and started to process a JSON array
+    - `array_end`: the parser read `]` and finished processing a JSON array
+    - `value`: the parser finished reading a JSON value
+
+    @image html callback_events.png "Example when certain parse events are triggered"
+
+    @sa @ref parser_callback_t for more information and examples
+    */
+    using parse_event_t = detail::parse_event_t;
+
+    /*!
+    @brief per-element parser callback type
+
+    With a parser callback function, the result of parsing a JSON text can be
+    influenced. When passed to @ref parse, it is called on certain events
+    (passed as @ref parse_event_t via parameter @a event) with a set recursion
+    depth @a depth and context JSON value @a parsed. The return value of the
+    callback function is a boolean indicating whether the element that emitted
+    the callback shall be kept or not.
+
+    We distinguish six scenarios (determined by the event type) in which the
+    callback function can be called. The following table describes the values
+    of the parameters @a depth, @a event, and @a parsed.
+
+    parameter @a event | description | parameter @a depth | parameter @a parsed
+    ------------------ | ----------- | ------------------ | -------------------
+    parse_event_t::object_start | the parser read `{` and started to process a JSON object | depth of the parent of the JSON object | a JSON value with type discarded
+    parse_event_t::key | the parser read a key of a value in an object | depth of the currently parsed JSON object | a JSON string containing the key
+    parse_event_t::object_end | the parser read `}` and finished processing a JSON object | depth of the parent of the JSON object | the parsed JSON object
+    parse_event_t::array_start | the parser read `[` and started to process a JSON array | depth of the parent of the JSON array | a JSON value with type discarded
+    parse_event_t::array_end | the parser read `]` and finished processing a JSON array | depth of the parent of the JSON array | the parsed JSON array
+    parse_event_t::value | the parser finished reading a JSON value | depth of the value | the parsed JSON value
+
+    @image html callback_events.png "Example when certain parse events are triggered"
+
+    Discarding a value (i.e., returning `false`) has different effects
+    depending on the context in which function was called:
+
+    - Discarded values in structured types are skipped. That is, the parser
+      will behave as if the discarded value was never read.
+    - In case a value outside a structured type is skipped, it is replaced
+      with `null`. This case happens if the top-level element is skipped.
+
+    @param[in] depth  the depth of the recursion during parsing
+
+    @param[in] event  an event of type parse_event_t indicating the context in
+    the callback function has been called
+
+    @param[in,out] parsed  the current intermediate parse result; note that
+    writing to this value has no effect for parse_event_t::key events
+
+    @return Whether the JSON value which called the function during parsing
+    should be kept (`true`) or not (`false`). In the latter case, it is either
+    skipped completely or replaced by an empty discarded object.
+
+    @sa @ref parse for examples
+
+    @since version 1.0.0
+    */
+    using parser_callback_t = detail::parser_callback_t<basic_json>;
+
+    //////////////////
+    // constructors //
+    //////////////////
+
+    /// @name constructors and destructors
+    /// Constructors of class @ref basic_json, copy/move constructor, copy
+    /// assignment, static functions creating objects, and the destructor.
+    /// @{
+
+    /*!
+    @brief create an empty value with a given type
+
+    Create an empty JSON value with a given type. The value will be default
+    initialized with an empty value which depends on the type:
+
+    Value type  | initial value
+    ----------- | -------------
+    null        | `null`
+    boolean     | `false`
+    string      | `""`
+    number      | `0`
+    object      | `{}`
+    array       | `[]`
+    binary      | empty array
+
+    @param[in] v  the type of the value to create
+
+    @complexity Constant.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The following code shows the constructor for different @ref
+    value_t values,basic_json__value_t}
+
+    @sa @ref clear() -- restores the postcondition of this constructor
+
+    @since version 1.0.0
+    */
+    basic_json(const value_t v)
+        : m_type(v), m_value(v)
+    {
+        assert_invariant();
+    }
+
+    /*!
+    @brief create a null object
+
+    Create a `null` JSON value. It either takes a null pointer as parameter
+    (explicitly creating `null`) or no parameter (implicitly creating `null`).
+    The passed null pointer itself is not read -- it is only used to choose
+    the right constructor.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this constructor never throws
+    exceptions.
+
+    @liveexample{The following code shows the constructor with and without a
+    null pointer parameter.,basic_json__nullptr_t}
+
+    @since version 1.0.0
+    */
+    basic_json(std::nullptr_t = nullptr) noexcept
+        : basic_json(value_t::null)
+    {
+        assert_invariant();
+    }
+
+    /*!
+    @brief create a JSON value
+
+    This is a "catch all" constructor for all compatible JSON types; that is,
+    types for which a `to_json()` method exists. The constructor forwards the
+    parameter @a val to that method (to `json_serializer<U>::to_json` method
+    with `U = uncvref_t<CompatibleType>`, to be exact).
+
+    Template type @a CompatibleType includes, but is not limited to, the
+    following types:
+    - **arrays**: @ref array_t and all kinds of compatible containers such as
+      `std::vector`, `std::deque`, `std::list`, `std::forward_list`,
+      `std::array`, `std::valarray`, `std::set`, `std::unordered_set`,
+      `std::multiset`, and `std::unordered_multiset` with a `value_type` from
+      which a @ref basic_json value can be constructed.
+    - **objects**: @ref object_t and all kinds of compatible associative
+      containers such as `std::map`, `std::unordered_map`, `std::multimap`,
+      and `std::unordered_multimap` with a `key_type` compatible to
+      @ref string_t and a `value_type` from which a @ref basic_json value can
+      be constructed.
+    - **strings**: @ref string_t, string literals, and all compatible string
+      containers can be used.
+    - **numbers**: @ref number_integer_t, @ref number_unsigned_t,
+      @ref number_float_t, and all convertible number types such as `int`,
+      `size_t`, `int64_t`, `float` or `double` can be used.
+    - **boolean**: @ref boolean_t / `bool` can be used.
+    - **binary**: @ref binary_t / `std::vector<uint8_t>` may be used,
+      unfortunately because string literals cannot be distinguished from binary
+      character arrays by the C++ type system, all types compatible with `const
+      char*` will be directed to the string constructor instead.  This is both
+      for backwards compatibility, and due to the fact that a binary type is not
+      a standard JSON type.
+
+    See the examples below.
+
+    @tparam CompatibleType a type such that:
+    - @a CompatibleType is not derived from `std::istream`,
+    - @a CompatibleType is not @ref basic_json (to avoid hijacking copy/move
+         constructors),
+    - @a CompatibleType is not a different @ref basic_json type (i.e. with different template arguments)
+    - @a CompatibleType is not a @ref basic_json nested type (e.g.,
+         @ref json_pointer, @ref iterator, etc ...)
+    - @ref @ref json_serializer<U> has a
+         `to_json(basic_json_t&, CompatibleType&&)` method
+
+    @tparam U = `uncvref_t<CompatibleType>`
+
+    @param[in] val the value to be forwarded to the respective constructor
+
+    @complexity Usually linear in the size of the passed @a val, also
+                depending on the implementation of the called `to_json()`
+                method.
+
+    @exceptionsafety Depends on the called constructor. For types directly
+    supported by the library (i.e., all types for which no `to_json()` function
+    was provided), strong guarantee holds: if an exception is thrown, there are
+    no changes to any JSON value.
+
+    @liveexample{The following code shows the constructor with several
+    compatible types.,basic_json__CompatibleType}
+
+    @since version 2.1.0
+    */
+    template < typename CompatibleType,
+               typename U = detail::uncvref_t<CompatibleType>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
+    basic_json(CompatibleType && val) noexcept(noexcept(
+                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                           std::forward<CompatibleType>(val))))
+    {
+        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
+        assert_invariant();
+    }
+
+    /*!
+    @brief create a JSON value from an existing one
+
+    This is a constructor for existing @ref basic_json types.
+    It does not hijack copy/move constructors, since the parameter has different
+    template arguments than the current ones.
+
+    The constructor tries to convert the internal @ref m_value of the parameter.
+
+    @tparam BasicJsonType a type such that:
+    - @a BasicJsonType is a @ref basic_json type.
+    - @a BasicJsonType has different template arguments than @ref basic_json_t.
+
+    @param[in] val the @ref basic_json value to be converted.
+
+    @complexity Usually linear in the size of the passed @a val, also
+                depending on the implementation of the called `to_json()`
+                method.
+
+    @exceptionsafety Depends on the called constructor. For types directly
+    supported by the library (i.e., all types for which no `to_json()` function
+    was provided), strong guarantee holds: if an exception is thrown, there are
+    no changes to any JSON value.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
+    basic_json(const BasicJsonType& val)
+    {
+        using other_boolean_t = typename BasicJsonType::boolean_t;
+        using other_number_float_t = typename BasicJsonType::number_float_t;
+        using other_number_integer_t = typename BasicJsonType::number_integer_t;
+        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+        using other_string_t = typename BasicJsonType::string_t;
+        using other_object_t = typename BasicJsonType::object_t;
+        using other_array_t = typename BasicJsonType::array_t;
+        using other_binary_t = typename BasicJsonType::binary_t;
+
+        switch (val.type())
+        {
+            case value_t::boolean:
+                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
+                break;
+            case value_t::number_float:
+                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
+                break;
+            case value_t::number_integer:
+                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
+                break;
+            case value_t::number_unsigned:
+                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
+                break;
+            case value_t::string:
+                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
+                break;
+            case value_t::object:
+                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
+                break;
+            case value_t::array:
+                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
+                break;
+            case value_t::binary:
+                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
+                break;
+            case value_t::null:
+                *this = nullptr;
+                break;
+            case value_t::discarded:
+                m_type = value_t::discarded;
+                break;
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false);  // LCOV_EXCL_LINE
+        }
+        assert_invariant();
+    }
+
+    /*!
+    @brief create a container (array or object) from an initializer list
+
+    Creates a JSON value of type array or object from the passed initializer
+    list @a init. In case @a type_deduction is `true` (default), the type of
+    the JSON value to be created is deducted from the initializer list @a init
+    according to the following rules:
+
+    1. If the list is empty, an empty JSON object value `{}` is created.
+    2. If the list consists of pairs whose first element is a string, a JSON
+       object value is created where the first elements of the pairs are
+       treated as keys and the second elements are as values.
+    3. In all other cases, an array is created.
+
+    The rules aim to create the best fit between a C++ initializer list and
+    JSON values. The rationale is as follows:
+
+    1. The empty initializer list is written as `{}` which is exactly an empty
+       JSON object.
+    2. C++ has no way of describing mapped types other than to list a list of
+       pairs. As JSON requires that keys must be of type string, rule 2 is the
+       weakest constraint one can pose on initializer lists to interpret them
+       as an object.
+    3. In all other cases, the initializer list could not be interpreted as
+       JSON object type, so interpreting it as JSON array type is safe.
+
+    With the rules described above, the following JSON values cannot be
+    expressed by an initializer list:
+
+    - the empty array (`[]`): use @ref array(initializer_list_t)
+      with an empty initializer list in this case
+    - arrays whose elements satisfy rule 2: use @ref
+      array(initializer_list_t) with the same initializer list
+      in this case
+
+    @note When used without parentheses around an empty initializer list, @ref
+    basic_json() is called instead of this function, yielding the JSON null
+    value.
+
+    @param[in] init  initializer list with JSON values
+
+    @param[in] type_deduction internal parameter; when set to `true`, the type
+    of the JSON value is deducted from the initializer list @a init; when set
+    to `false`, the type provided via @a manual_type is forced. This mode is
+    used by the functions @ref array(initializer_list_t) and
+    @ref object(initializer_list_t).
+
+    @param[in] manual_type internal parameter; when @a type_deduction is set
+    to `false`, the created JSON value will use the provided type (only @ref
+    value_t::array and @ref value_t::object are valid); when @a type_deduction
+    is set to `true`, this parameter has no effect
+
+    @throw type_error.301 if @a type_deduction is `false`, @a manual_type is
+    `value_t::object`, but @a init contains an element which is not a pair
+    whose first element is a string. In this case, the constructor could not
+    create an object. If @a type_deduction would have be `true`, an array
+    would have been created. See @ref object(initializer_list_t)
+    for an example.
+
+    @complexity Linear in the size of the initializer list @a init.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The example below shows how JSON values are created from
+    initializer lists.,basic_json__list_init_t}
+
+    @sa @ref array(initializer_list_t) -- create a JSON array
+    value from an initializer list
+    @sa @ref object(initializer_list_t) -- create a JSON object
+    value from an initializer list
+
+    @since version 1.0.0
+    */
+    basic_json(initializer_list_t init,
+               bool type_deduction = true,
+               value_t manual_type = value_t::array)
+    {
+        // check if each element is an array with two elements whose first
+        // element is a string
+        bool is_an_object = std::all_of(init.begin(), init.end(),
+                                        [](const detail::json_ref<basic_json>& element_ref)
+        {
+            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[0].is_string();
+        });
+
+        // adjust type if type deduction is not wanted
+        if (!type_deduction)
+        {
+            // if array is wanted, do not create an object though possible
+            if (manual_type == value_t::array)
+            {
+                is_an_object = false;
+            }
+
+            // if object is wanted but impossible, throw an exception
+            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
+            {
+                JSON_THROW(type_error::create(301, "cannot create object from initializer list"));
+            }
+        }
+
+        if (is_an_object)
+        {
+            // the initializer list is a list of pairs -> create object
+            m_type = value_t::object;
+            m_value = value_t::object;
+
+            std::for_each(init.begin(), init.end(), [this](const detail::json_ref<basic_json>& element_ref)
+            {
+                auto element = element_ref.moved_or_copied();
+                m_value.object->emplace(
+                    std::move(*((*element.m_value.array)[0].m_value.string)),
+                    std::move((*element.m_value.array)[1]));
+            });
+        }
+        else
+        {
+            // the initializer list describes an array -> create array
+            m_type = value_t::array;
+            m_value.array = create<array_t>(init.begin(), init.end());
+        }
+
+        assert_invariant();
+    }
+
+    /*!
+    @brief explicitly create a binary array (without subtype)
+
+    Creates a JSON binary array value from a given binary container. Binary
+    values are part of various binary formats, such as CBOR, MessagePack, and
+    BSON. This constructor is used to create a value for serialization to those
+    formats.
+
+    @note Note, this function exists because of the difficulty in correctly
+    specifying the correct template overload in the standard value ctor, as both
+    JSON arrays and JSON binary arrays are backed with some form of a
+    `std::vector`. Because JSON binary arrays are a non-standard extension it
+    was decided that it would be best to prevent automatic initialization of a
+    binary array type, for backwards compatibility and so it does not happen on
+    accident.
+
+    @param[in] init container containing bytes to use as binary type
+
+    @return JSON binary array value
+
+    @complexity Linear in the size of @a init.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @since version 3.8.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = init;
+        return res;
+    }
+
+    /*!
+    @brief explicitly create a binary array (with subtype)
+
+    Creates a JSON binary array value from a given binary container. Binary
+    values are part of various binary formats, such as CBOR, MessagePack, and
+    BSON. This constructor is used to create a value for serialization to those
+    formats.
+
+    @note Note, this function exists because of the difficulty in correctly
+    specifying the correct template overload in the standard value ctor, as both
+    JSON arrays and JSON binary arrays are backed with some form of a
+    `std::vector`. Because JSON binary arrays are a non-standard extension it
+    was decided that it would be best to prevent automatic initialization of a
+    binary array type, for backwards compatibility and so it does not happen on
+    accident.
+
+    @param[in] init container containing bytes to use as binary type
+    @param[in] subtype subtype to use in MessagePack and BSON
+
+    @return JSON binary array value
+
+    @complexity Linear in the size of @a init.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @since version 3.8.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init, std::uint8_t subtype)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = binary_t(init, subtype);
+        return res;
+    }
+
+    /// @copydoc binary(const typename binary_t::container_type&)
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = std::move(init);
+        return res;
+    }
+
+    /// @copydoc binary(const typename binary_t::container_type&, std::uint8_t)
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init, std::uint8_t subtype)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = binary_t(std::move(init), subtype);
+        return res;
+    }
+
+    /*!
+    @brief explicitly create an array from an initializer list
+
+    Creates a JSON array value from a given initializer list. That is, given a
+    list of values `a, b, c`, creates the JSON value `[a, b, c]`. If the
+    initializer list is empty, the empty array `[]` is created.
+
+    @note This function is only needed to express two edge cases that cannot
+    be realized with the initializer list constructor (@ref
+    basic_json(initializer_list_t, bool, value_t)). These cases
+    are:
+    1. creating an array whose elements are all pairs whose first element is a
+    string -- in this case, the initializer list constructor would create an
+    object, taking the first elements as keys
+    2. creating an empty array -- passing the empty initializer list to the
+    initializer list constructor yields an empty object
+
+    @param[in] init  initializer list with JSON values to create an array from
+    (optional)
+
+    @return JSON array value
+
+    @complexity Linear in the size of @a init.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The following code shows an example for the `array`
+    function.,array}
+
+    @sa @ref basic_json(initializer_list_t, bool, value_t) --
+    create a JSON value from an initializer list
+    @sa @ref object(initializer_list_t) -- create a JSON object
+    value from an initializer list
+
+    @since version 1.0.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json array(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::array);
+    }
+
+    /*!
+    @brief explicitly create an object from an initializer list
+
+    Creates a JSON object value from a given initializer list. The initializer
+    lists elements must be pairs, and their first elements must be strings. If
+    the initializer list is empty, the empty object `{}` is created.
+
+    @note This function is only added for symmetry reasons. In contrast to the
+    related function @ref array(initializer_list_t), there are
+    no cases which can only be expressed by this function. That is, any
+    initializer list @a init can also be passed to the initializer list
+    constructor @ref basic_json(initializer_list_t, bool, value_t).
+
+    @param[in] init  initializer list to create an object from (optional)
+
+    @return JSON object value
+
+    @throw type_error.301 if @a init is not a list of pairs whose first
+    elements are strings. In this case, no object can be created. When such a
+    value is passed to @ref basic_json(initializer_list_t, bool, value_t),
+    an array would have been created from the passed initializer list @a init.
+    See example below.
+
+    @complexity Linear in the size of @a init.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The following code shows an example for the `object`
+    function.,object}
+
+    @sa @ref basic_json(initializer_list_t, bool, value_t) --
+    create a JSON value from an initializer list
+    @sa @ref array(initializer_list_t) -- create a JSON array
+    value from an initializer list
+
+    @since version 1.0.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json object(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::object);
+    }
+
+    /*!
+    @brief construct an array with count copies of given value
+
+    Constructs a JSON array value by creating @a cnt copies of a passed value.
+    In case @a cnt is `0`, an empty array is created.
+
+    @param[in] cnt  the number of JSON copies of @a val to create
+    @param[in] val  the JSON value to copy
+
+    @post `std::distance(begin(),end()) == cnt` holds.
+
+    @complexity Linear in @a cnt.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The following code shows examples for the @ref
+    basic_json(size_type\, const basic_json&)
+    constructor.,basic_json__size_type_basic_json}
+
+    @since version 1.0.0
+    */
+    basic_json(size_type cnt, const basic_json& val)
+        : m_type(value_t::array)
+    {
+        m_value.array = create<array_t>(cnt, val);
+        assert_invariant();
+    }
+
+    /*!
+    @brief construct a JSON container given an iterator range
+
+    Constructs the JSON value with the contents of the range `[first, last)`.
+    The semantics depends on the different types a JSON value can have:
+    - In case of a null type, invalid_iterator.206 is thrown.
+    - In case of other primitive types (number, boolean, or string), @a first
+      must be `begin()` and @a last must be `end()`. In this case, the value is
+      copied. Otherwise, invalid_iterator.204 is thrown.
+    - In case of structured types (array, object), the constructor behaves as
+      similar versions for `std::vector` or `std::map`; that is, a JSON array
+      or object is constructed from the values in the range.
+
+    @tparam InputIT an input iterator type (@ref iterator or @ref
+    const_iterator)
+
+    @param[in] first begin of the range to copy from (included)
+    @param[in] last end of the range to copy from (excluded)
+
+    @pre Iterators @a first and @a last must be initialized. **This
+         precondition is enforced with an assertion (see warning).** If
+         assertions are switched off, a violation of this precondition yields
+         undefined behavior.
+
+    @pre Range `[first, last)` is valid. Usually, this precondition cannot be
+         checked efficiently. Only certain edge cases are detected; see the
+         description of the exceptions below. A violation of this precondition
+         yields undefined behavior.
+
+    @warning A precondition is enforced with a runtime assertion that will
+             result in calling `std::abort` if this precondition is not met.
+             Assertions can be disabled by defining `NDEBUG` at compile time.
+             See https://en.cppreference.com/w/cpp/error/assert for more
+             information.
+
+    @throw invalid_iterator.201 if iterators @a first and @a last are not
+    compatible (i.e., do not belong to the same JSON value). In this case,
+    the range `[first, last)` is undefined.
+    @throw invalid_iterator.204 if iterators @a first and @a last belong to a
+    primitive type (number, boolean, or string), but @a first does not point
+    to the first element any more. In this case, the range `[first, last)` is
+    undefined. See example code below.
+    @throw invalid_iterator.206 if iterators @a first and @a last belong to a
+    null value. In this case, the range `[first, last)` is undefined.
+
+    @complexity Linear in distance between @a first and @a last.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @liveexample{The example below shows several ways to create JSON values by
+    specifying a subrange with iterators.,basic_json__InputIt_InputIt}
+
+    @since version 1.0.0
+    */
+    template < class InputIT, typename std::enable_if <
+                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
+                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
+    basic_json(InputIT first, InputIT last)
+    {
+        JSON_ASSERT(first.m_object != nullptr);
+        JSON_ASSERT(last.m_object != nullptr);
+
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible"));
+        }
+
+        // copy type from first iterator
+        m_type = first.m_object->m_type;
+
+        // check if iterator range is complete for primitive values
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
+                                         || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range"));
+                }
+                break;
+            }
+
+            default:
+                break;
+        }
+
+        switch (m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_value.number_integer = first.m_object->m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value.number_unsigned = first.m_object->m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value.number_float = first.m_object->m_value.number_float;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value.boolean = first.m_object->m_value.boolean;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value = *first.m_object->m_value.string;
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_value.object = create<object_t>(first.m_it.object_iterator,
+                                                  last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value.array = create<array_t>(first.m_it.array_iterator,
+                                                last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value = *first.m_object->m_value.binary;
+                break;
+            }
+
+            default:
+                JSON_THROW(invalid_iterator::create(206, "cannot construct with iterators from " +
+                                                    std::string(first.m_object->type_name())));
+        }
+
+        assert_invariant();
+    }
+
+
+    ///////////////////////////////////////
+    // other constructors and destructor //
+    ///////////////////////////////////////
+
+    template<typename JsonRef,
+             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
+                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
+    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
+
+    /*!
+    @brief copy constructor
+
+    Creates a copy of a given JSON value.
+
+    @param[in] other  the JSON value to copy
+
+    @post `*this == other`
+
+    @complexity Linear in the size of @a other.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes to any JSON value.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is linear.
+    - As postcondition, it holds: `other == basic_json(other)`.
+
+    @liveexample{The following code shows an example for the copy
+    constructor.,basic_json__basic_json}
+
+    @since version 1.0.0
+    */
+    basic_json(const basic_json& other)
+        : m_type(other.m_type)
+    {
+        // check of passed value is valid
+        other.assert_invariant();
+
+        switch (m_type)
+        {
+            case value_t::object:
+            {
+                m_value = *other.m_value.object;
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value = *other.m_value.array;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value = *other.m_value.string;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value = other.m_value.boolean;
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                m_value = other.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value = other.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value = other.m_value.number_float;
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value = *other.m_value.binary;
+                break;
+            }
+
+            default:
+                break;
+        }
+
+        assert_invariant();
+    }
+
+    /*!
+    @brief move constructor
+
+    Move constructor. Constructs a JSON value with the contents of the given
+    value @a other using move semantics. It "steals" the resources from @a
+    other and leaves it as JSON null value.
+
+    @param[in,out] other  value to move to this object
+
+    @post `*this` has the same value as @a other before the call.
+    @post @a other is a JSON null value.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this constructor never throws
+    exceptions.
+
+    @requirement This function helps `basic_json` satisfying the
+    [MoveConstructible](https://en.cppreference.com/w/cpp/named_req/MoveConstructible)
+    requirements.
+
+    @liveexample{The code below shows the move constructor explicitly called
+    via std::move.,basic_json__moveconstructor}
+
+    @since version 1.0.0
+    */
+    basic_json(basic_json&& other) noexcept
+        : m_type(std::move(other.m_type)),
+          m_value(std::move(other.m_value))
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        // invalidate payload
+        other.m_type = value_t::null;
+        other.m_value = {};
+
+        assert_invariant();
+    }
+
+    /*!
+    @brief copy assignment
+
+    Copy assignment operator. Copies a JSON value via the "copy and swap"
+    strategy: It is expressed in terms of the copy constructor, destructor,
+    and the `swap()` member function.
+
+    @param[in] other  value to copy from
+
+    @complexity Linear.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is linear.
+
+    @liveexample{The code below shows and example for the copy assignment. It
+    creates a copy of value `a` which is then swapped with `b`. Finally\, the
+    copy of `a` (which is the null value after the swap) is
+    destroyed.,basic_json__copyassignment}
+
+    @since version 1.0.0
+    */
+    basic_json& operator=(basic_json other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        using std::swap;
+        swap(m_type, other.m_type);
+        swap(m_value, other.m_value);
+
+        assert_invariant();
+        return *this;
+    }
+
+    /*!
+    @brief destructor
+
+    Destroys the JSON value and frees all allocated memory.
+
+    @complexity Linear.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is linear.
+    - All stored elements are destroyed and all memory is freed.
+
+    @since version 1.0.0
+    */
+    ~basic_json() noexcept
+    {
+        assert_invariant();
+        m_value.destroy(m_type);
+    }
+
+    /// @}
+
+  public:
+    ///////////////////////
+    // object inspection //
+    ///////////////////////
+
+    /// @name object inspection
+    /// Functions to inspect the type of a JSON value.
+    /// @{
+
+    /*!
+    @brief serialization
+
+    Serialization function for JSON values. The function tries to mimic
+    Python's `json.dumps()` function, and currently supports its @a indent
+    and @a ensure_ascii parameters.
+
+    @param[in] indent If indent is nonnegative, then array elements and object
+    members will be pretty-printed with that indent level. An indent level of
+    `0` will only insert newlines. `-1` (the default) selects the most compact
+    representation.
+    @param[in] indent_char The character to use for indentation if @a indent is
+    greater than `0`. The default is ` ` (space).
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] error_handler  how to react on decoding errors; there are three
+    possible values: `strict` (throws and exception in case a decoding error
+    occurs; default), `replace` (replace invalid UTF-8 sequences with U+FFFD),
+    and `ignore` (ignore invalid UTF-8 sequences during serialization; all
+    bytes are copied to the output unchanged).
+
+    @return string containing the serialization of the JSON value
+
+    @throw type_error.316 if a string stored inside the JSON value is not
+                          UTF-8 encoded and @a error_handler is set to strict
+
+    @note Binary values are serialized as object containing two keys:
+      - "bytes": an array of bytes as integers
+      - "subtype": the subtype as integer or "null" if the binary has no subtype
+
+    @complexity Linear.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @liveexample{The following example shows the effect of different @a indent\,
+    @a indent_char\, and @a ensure_ascii parameters to the result of the
+    serialization.,dump}
+
+    @see https://docs.python.org/2/library/json.html#json.dump
+
+    @since version 1.0.0; indentation character @a indent_char, option
+           @a ensure_ascii and exceptions added in version 3.0.0; error
+           handlers added in version 3.4.0; serialization of binary values added
+           in version 3.8.0.
+    */
+    string_t dump(const int indent = -1,
+                  const char indent_char = ' ',
+                  const bool ensure_ascii = false,
+                  const error_handler_t error_handler = error_handler_t::strict) const
+    {
+        string_t result;
+        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
+
+        if (indent >= 0)
+        {
+            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
+        }
+        else
+        {
+            s.dump(*this, false, ensure_ascii, 0);
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief return the type of the JSON value (explicit)
+
+    Return the type of the JSON value as a value from the @ref value_t
+    enumeration.
+
+    @return the type of the JSON value
+            Value type                | return value
+            ------------------------- | -------------------------
+            null                      | value_t::null
+            boolean                   | value_t::boolean
+            string                    | value_t::string
+            number (integer)          | value_t::number_integer
+            number (unsigned integer) | value_t::number_unsigned
+            number (floating-point)   | value_t::number_float
+            object                    | value_t::object
+            array                     | value_t::array
+            binary                    | value_t::binary
+            discarded                 | value_t::discarded
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `type()` for all JSON
+    types.,type}
+
+    @sa @ref operator value_t() -- return the type of the JSON value (implicit)
+    @sa @ref type_name() -- return the type as string
+
+    @since version 1.0.0
+    */
+    constexpr value_t type() const noexcept
+    {
+        return m_type;
+    }
+
+    /*!
+    @brief return whether type is primitive
+
+    This function returns true if and only if the JSON type is primitive
+    (string, number, boolean, or null).
+
+    @return `true` if type is primitive (string, number, boolean, or null),
+    `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_primitive()` for all JSON
+    types.,is_primitive}
+
+    @sa @ref is_structured() -- returns whether JSON value is structured
+    @sa @ref is_null() -- returns whether JSON value is `null`
+    @sa @ref is_string() -- returns whether JSON value is a string
+    @sa @ref is_boolean() -- returns whether JSON value is a boolean
+    @sa @ref is_number() -- returns whether JSON value is a number
+    @sa @ref is_binary() -- returns whether JSON value is a binary array
+
+    @since version 1.0.0
+    */
+    constexpr bool is_primitive() const noexcept
+    {
+        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+    }
+
+    /*!
+    @brief return whether type is structured
+
+    This function returns true if and only if the JSON type is structured
+    (array or object).
+
+    @return `true` if type is structured (array or object), `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_structured()` for all JSON
+    types.,is_structured}
+
+    @sa @ref is_primitive() -- returns whether value is primitive
+    @sa @ref is_array() -- returns whether value is an array
+    @sa @ref is_object() -- returns whether value is an object
+
+    @since version 1.0.0
+    */
+    constexpr bool is_structured() const noexcept
+    {
+        return is_array() || is_object();
+    }
+
+    /*!
+    @brief return whether value is null
+
+    This function returns true if and only if the JSON value is null.
+
+    @return `true` if type is null, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_null()` for all JSON
+    types.,is_null}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_null() const noexcept
+    {
+        return m_type == value_t::null;
+    }
+
+    /*!
+    @brief return whether value is a boolean
+
+    This function returns true if and only if the JSON value is a boolean.
+
+    @return `true` if type is boolean, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_boolean()` for all JSON
+    types.,is_boolean}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_boolean() const noexcept
+    {
+        return m_type == value_t::boolean;
+    }
+
+    /*!
+    @brief return whether value is a number
+
+    This function returns true if and only if the JSON value is a number. This
+    includes both integer (signed and unsigned) and floating-point values.
+
+    @return `true` if type is number (regardless whether integer, unsigned
+    integer or floating-type), `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_number()` for all JSON
+    types.,is_number}
+
+    @sa @ref is_number_integer() -- check if value is an integer or unsigned
+    integer number
+    @sa @ref is_number_unsigned() -- check if value is an unsigned integer
+    number
+    @sa @ref is_number_float() -- check if value is a floating-point number
+
+    @since version 1.0.0
+    */
+    constexpr bool is_number() const noexcept
+    {
+        return is_number_integer() || is_number_float();
+    }
+
+    /*!
+    @brief return whether value is an integer number
+
+    This function returns true if and only if the JSON value is a signed or
+    unsigned integer number. This excludes floating-point values.
+
+    @return `true` if type is an integer or unsigned integer number, `false`
+    otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_number_integer()` for all
+    JSON types.,is_number_integer}
+
+    @sa @ref is_number() -- check if value is a number
+    @sa @ref is_number_unsigned() -- check if value is an unsigned integer
+    number
+    @sa @ref is_number_float() -- check if value is a floating-point number
+
+    @since version 1.0.0
+    */
+    constexpr bool is_number_integer() const noexcept
+    {
+        return m_type == value_t::number_integer || m_type == value_t::number_unsigned;
+    }
+
+    /*!
+    @brief return whether value is an unsigned integer number
+
+    This function returns true if and only if the JSON value is an unsigned
+    integer number. This excludes floating-point and signed integer values.
+
+    @return `true` if type is an unsigned integer number, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_number_unsigned()` for all
+    JSON types.,is_number_unsigned}
+
+    @sa @ref is_number() -- check if value is a number
+    @sa @ref is_number_integer() -- check if value is an integer or unsigned
+    integer number
+    @sa @ref is_number_float() -- check if value is a floating-point number
+
+    @since version 2.0.0
+    */
+    constexpr bool is_number_unsigned() const noexcept
+    {
+        return m_type == value_t::number_unsigned;
+    }
+
+    /*!
+    @brief return whether value is a floating-point number
+
+    This function returns true if and only if the JSON value is a
+    floating-point number. This excludes signed and unsigned integer values.
+
+    @return `true` if type is a floating-point number, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_number_float()` for all
+    JSON types.,is_number_float}
+
+    @sa @ref is_number() -- check if value is number
+    @sa @ref is_number_integer() -- check if value is an integer number
+    @sa @ref is_number_unsigned() -- check if value is an unsigned integer
+    number
+
+    @since version 1.0.0
+    */
+    constexpr bool is_number_float() const noexcept
+    {
+        return m_type == value_t::number_float;
+    }
+
+    /*!
+    @brief return whether value is an object
+
+    This function returns true if and only if the JSON value is an object.
+
+    @return `true` if type is object, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_object()` for all JSON
+    types.,is_object}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_object() const noexcept
+    {
+        return m_type == value_t::object;
+    }
+
+    /*!
+    @brief return whether value is an array
+
+    This function returns true if and only if the JSON value is an array.
+
+    @return `true` if type is array, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_array()` for all JSON
+    types.,is_array}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_array() const noexcept
+    {
+        return m_type == value_t::array;
+    }
+
+    /*!
+    @brief return whether value is a string
+
+    This function returns true if and only if the JSON value is a string.
+
+    @return `true` if type is string, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_string()` for all JSON
+    types.,is_string}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_string() const noexcept
+    {
+        return m_type == value_t::string;
+    }
+
+    /*!
+    @brief return whether value is a binary array
+
+    This function returns true if and only if the JSON value is a binary array.
+
+    @return `true` if type is binary array, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_binary()` for all JSON
+    types.,is_binary}
+
+    @since version 3.8.0
+    */
+    constexpr bool is_binary() const noexcept
+    {
+        return m_type == value_t::binary;
+    }
+
+    /*!
+    @brief return whether value is discarded
+
+    This function returns true if and only if the JSON value was discarded
+    during parsing with a callback function (see @ref parser_callback_t).
+
+    @note This function will always be `false` for JSON values after parsing.
+    That is, discarded values can only occur during parsing, but will be
+    removed when inside a structured value or replaced by null in other cases.
+
+    @return `true` if type is discarded, `false` otherwise.
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies `is_discarded()` for all JSON
+    types.,is_discarded}
+
+    @since version 1.0.0
+    */
+    constexpr bool is_discarded() const noexcept
+    {
+        return m_type == value_t::discarded;
+    }
+
+    /*!
+    @brief return the type of the JSON value (implicit)
+
+    Implicitly return the type of the JSON value as a value from the @ref
+    value_t enumeration.
+
+    @return the type of the JSON value
+
+    @complexity Constant.
+
+    @exceptionsafety No-throw guarantee: this member function never throws
+    exceptions.
+
+    @liveexample{The following code exemplifies the @ref value_t operator for
+    all JSON types.,operator__value_t}
+
+    @sa @ref type() -- return the type of the JSON value (explicit)
+    @sa @ref type_name() -- return the type as string
+
+    @since version 1.0.0
+    */
+    constexpr operator value_t() const noexcept
+    {
+        return m_type;
+    }
+
+    /// @}
+
+  private:
+    //////////////////
+    // value access //
+    //////////////////
+
+    /// get a boolean (explicit)
+    boolean_t get_impl(boolean_t* /*unused*/) const
+    {
+        if (JSON_HEDLEY_LIKELY(is_boolean()))
+        {
+            return m_value.boolean;
+        }
+
+        JSON_THROW(type_error::create(302, "type must be boolean, but is " + std::string(type_name())));
+    }
+
+    /// get a pointer to the value (object)
+    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
+    {
+        return is_object() ? m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (object)
+    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
+    {
+        return is_object() ? m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
+    {
+        return is_array() ? m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
+    {
+        return is_array() ? m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
+    {
+        return is_string() ? m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
+    {
+        return is_string() ? m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
+    {
+        return is_boolean() ? &m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
+    {
+        return is_boolean() ? &m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
+    {
+        return is_number_integer() ? &m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
+    {
+        return is_number_integer() ? &m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
+    {
+        return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
+    {
+        return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
+    {
+        return is_number_float() ? &m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
+    {
+        return is_number_float() ? &m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
+    {
+        return is_binary() ? m_value.binary : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
+    {
+        return is_binary() ? m_value.binary : nullptr;
+    }
+
+    /*!
+    @brief helper function to implement get_ref()
+
+    This function helps to implement get_ref() without code duplication for
+    const and non-const overloads
+
+    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
+
+    @throw type_error.303 if ReferenceType does not match underlying value
+    type of the current JSON
+    */
+    template<typename ReferenceType, typename ThisType>
+    static ReferenceType get_ref_impl(ThisType& obj)
+    {
+        // delegate the call to get_ptr<>()
+        auto ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
+
+        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
+        {
+            return *ptr;
+        }
+
+        JSON_THROW(type_error::create(303, "incompatible ReferenceType for get_ref, actual type is " + std::string(obj.type_name())));
+    }
+
+  public:
+    /// @name value access
+    /// Direct access to the stored value of a JSON value.
+    /// @{
+
+    /*!
+    @brief get special-case overload
+
+    This overloads avoids a lot of template boilerplate, it can be seen as the
+    identity method
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this
+
+    @complexity Constant.
+
+    @since version 2.1.0
+    */
+    template<typename BasicJsonType, detail::enable_if_t<
+                 std::is_same<typename std::remove_const<BasicJsonType>::type, basic_json_t>::value,
+                 int> = 0>
+    basic_json get() const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads converts the current @ref basic_json in a different
+    @ref basic_json type
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this, converted into @tparam BasicJsonType
+
+    @complexity Depending on the implementation of the called `from_json()`
+                method.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType, detail::enable_if_t <
+                   !std::is_same<BasicJsonType, basic_json>::value&&
+                   detail::is_basic_json<BasicJsonType>::value, int > = 0 >
+    BasicJsonType get() const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - @ref json_serializer<ValueType> does not have a `from_json()` method of
+      the form `ValueType from_json(const basic_json&)`
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get__ValueType_const}
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value &&
+                   detail::has_from_json<basic_json_t, ValueType>::value &&
+                   !detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get() const noexcept(noexcept(
+                                       JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
+    {
+        // we cannot static_assert on ValueTypeCV being non-const, because
+        // there is support for get<const basic_json_t>(), which is why we
+        // still need the uncvref
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        static_assert(std::is_default_constructible<ValueType>::value,
+                      "types must be DefaultConstructible when used with get()");
+
+        ValueType ret;
+        JSONSerializer<ValueType>::from_json(*this, ret);
+        return ret;
+    }
+
+    /*!
+    @brief get a value (explicit); special case
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    return JSONSerializer<ValueTypeCV>::from_json(*this);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json and
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    @note If @ref json_serializer<ValueType> has both overloads of
+    `from_json()`, this one is chosen.
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>,
+               detail::enable_if_t < !std::is_same<basic_json_t, ValueType>::value &&
+                                     detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                                     int > = 0 >
+    ValueType get() const noexcept(noexcept(
+                                       JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
+    {
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        return JSONSerializer<ValueType>::from_json(*this);
+    }
+
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value.
+    The value is filled into the input parameter by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType v;
+    JSONSerializer<ValueType>::from_json(*this, v);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+
+    @tparam ValueType the input parameter type.
+
+    @return the input parameter, allowing chaining calls.
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get_to}
+
+    @since version 3.3.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType & get_to(ValueType& v) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<ValueType>::from_json(*this, v);
+        return v;
+    }
+
+    // specialization to allow to call get_to with a basic_json value
+    // see https://github.com/nlohmann/json/issues/2175
+    template<typename ValueType,
+             detail::enable_if_t <
+                 detail::is_basic_json<ValueType>::value,
+                 int> = 0>
+    ValueType & get_to(ValueType& v) const
+    {
+        v = *this;
+        return v;
+    }
+
+    template <
+        typename T, std::size_t N,
+        typename Array = T (&)[N],
+        detail::enable_if_t <
+            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
+    Array get_to(T (&v)[N]) const
+    noexcept(noexcept(JSONSerializer<Array>::from_json(
+                          std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<Array>::from_json(*this, v);
+        return v;
+    }
+
+
+    /*!
+    @brief get a pointer value (implicit)
+
+    Implicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning Writing data to the pointee of the result yields an undefined
+    state.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t. Enforced by a static
+    assertion.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get_ptr}
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>()
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /*!
+    @brief get a pointer value (implicit)
+    @copydoc get_ptr()
+    */
+    template < typename PointerType, typename std::enable_if <
+                   std::is_pointer<PointerType>::value&&
+                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
+    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>() const
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+
+    Explicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning The pointer becomes invalid if the underlying JSON object
+    changes.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get__PointerType}
+
+    @sa @ref get_ptr() for explicit pointer-member access
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+    @copydoc get()
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    constexpr auto get() const noexcept -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /*!
+    @brief get a reference value (implicit)
+
+    Implicit reference access to the internally stored JSON value. No copies
+    are made.
+
+    @warning Writing data to the referee of the result yields an undefined
+    state.
+
+    @tparam ReferenceType reference type; must be a reference to @ref array_t,
+    @ref object_t, @ref string_t, @ref boolean_t, @ref number_integer_t, or
+    @ref number_float_t. Enforced by static assertion.
+
+    @return reference to the internally stored JSON value if the requested
+    reference type @a ReferenceType fits to the JSON value; throws
+    type_error.303 otherwise
+
+    @throw type_error.303 in case passed type @a ReferenceType is incompatible
+    with the stored JSON value; see example below
+
+    @complexity Constant.
+
+    @liveexample{The example shows several calls to `get_ref()`.,get_ref}
+
+    @since version 1.1.0
+    */
+    template<typename ReferenceType, typename std::enable_if<
+                 std::is_reference<ReferenceType>::value, int>::type = 0>
+    ReferenceType get_ref()
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a reference value (implicit)
+    @copydoc get_ref()
+    */
+    template < typename ReferenceType, typename std::enable_if <
+                   std::is_reference<ReferenceType>::value&&
+                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
+    ReferenceType get_ref() const
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a value (implicit)
+
+    Implicit type conversion between the JSON value and a compatible value.
+    The call is realized by calling @ref get() const.
+
+    @tparam ValueType non-pointer type compatible to the JSON value, for
+    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
+    `std::vector` types for JSON arrays. The character type of @ref string_t
+    as well as an initializer list of this type is excluded to avoid
+    ambiguities as these types implicitly convert to `std::string`.
+
+    @return copy of the JSON value, converted to type @a ValueType
+
+    @throw type_error.302 in case passed type @a ValueType is incompatible
+    to the JSON value type (e.g., the JSON value is of type boolean, but a
+    string is requested); see example below
+
+    @complexity Linear in the size of the JSON value.
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,operator__ValueType}
+
+    @since version 1.0.0
+    */
+    template < typename ValueType, typename std::enable_if <
+                   !std::is_pointer<ValueType>::value&&
+                   !std::is_same<ValueType, detail::json_ref<basic_json>>::value&&
+                   !std::is_same<ValueType, typename string_t::value_type>::value&&
+                   !detail::is_basic_json<ValueType>::value
+                   && !std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
+#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
+                   && !std::is_same<ValueType, typename std::string_view>::value
+#endif
+                   && detail::is_detected<detail::get_template_function, const basic_json_t&, ValueType>::value
+                   , int >::type = 0 >
+    JSON_EXPLICIT operator ValueType() const
+    {
+        // delegate the call to get<>() const
+        return get<ValueType>();
+    }
+
+    /*!
+    @return reference to the binary value
+
+    @throw type_error.302 if the value is not binary
+
+    @sa @ref is_binary() to check if the value is binary
+
+    @since version 3.8.0
+    */
+    binary_t& get_binary()
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(type_name())));
+        }
+
+        return *get_ptr<binary_t*>();
+    }
+
+    /// @copydoc get_binary()
+    const binary_t& get_binary() const
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(type_name())));
+        }
+
+        return *get_ptr<const binary_t*>();
+    }
+
+    /// @}
+
+
+    ////////////////////
+    // element access //
+    ////////////////////
+
+    /// @name element access
+    /// Access to the JSON value.
+    /// @{
+
+    /*!
+    @brief access specified array element with bounds checking
+
+    Returns a reference to the element at specified location @a idx, with
+    bounds checking.
+
+    @param[in] idx  index of the element to access
+
+    @return reference to the element at index @a idx
+
+    @throw type_error.304 if the JSON value is not an array; in this case,
+    calling `at` with an index makes no sense. See example below.
+    @throw out_of_range.401 if the index @a idx is out of range of the array;
+    that is, `idx >= size()`. See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @since version 1.0.0
+
+    @liveexample{The example below shows how array elements can be read and
+    written using `at()`. It also demonstrates the different exceptions that
+    can be thrown.,at__size_type}
+    */
+    reference at(size_type idx)
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief access specified array element with bounds checking
+
+    Returns a const reference to the element at specified location @a idx,
+    with bounds checking.
+
+    @param[in] idx  index of the element to access
+
+    @return const reference to the element at index @a idx
+
+    @throw type_error.304 if the JSON value is not an array; in this case,
+    calling `at` with an index makes no sense. See example below.
+    @throw out_of_range.401 if the index @a idx is out of range of the array;
+    that is, `idx >= size()`. See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @since version 1.0.0
+
+    @liveexample{The example below shows how array elements can be read using
+    `at()`. It also demonstrates the different exceptions that can be thrown.,
+    at__size_type_const}
+    */
+    const_reference at(size_type idx) const
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief access specified object element with bounds checking
+
+    Returns a reference to the element at with specified key @a key, with
+    bounds checking.
+
+    @param[in] key  key of the element to access
+
+    @return reference to the element at key @a key
+
+    @throw type_error.304 if the JSON value is not an object; in this case,
+    calling `at` with a key makes no sense. See example below.
+    @throw out_of_range.403 if the key @a key is is not stored in the object;
+    that is, `find(key) == end()`. See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Logarithmic in the size of the container.
+
+    @sa @ref operator[](const typename object_t::key_type&) for unchecked
+    access by reference
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.0.0
+
+    @liveexample{The example below shows how object elements can be read and
+    written using `at()`. It also demonstrates the different exceptions that
+    can be thrown.,at__object_t_key_type}
+    */
+    reference at(const typename object_t::key_type& key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_TRY
+            {
+                return m_value.object->at(key);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(403, "key '" + key + "' not found"));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief access specified object element with bounds checking
+
+    Returns a const reference to the element at with specified key @a key,
+    with bounds checking.
+
+    @param[in] key  key of the element to access
+
+    @return const reference to the element at key @a key
+
+    @throw type_error.304 if the JSON value is not an object; in this case,
+    calling `at` with a key makes no sense. See example below.
+    @throw out_of_range.403 if the key @a key is is not stored in the object;
+    that is, `find(key) == end()`. See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Logarithmic in the size of the container.
+
+    @sa @ref operator[](const typename object_t::key_type&) for unchecked
+    access by reference
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.0.0
+
+    @liveexample{The example below shows how object elements can be read using
+    `at()`. It also demonstrates the different exceptions that can be thrown.,
+    at__object_t_key_type_const}
+    */
+    const_reference at(const typename object_t::key_type& key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_TRY
+            {
+                return m_value.object->at(key);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(403, "key '" + key + "' not found"));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief access specified array element
+
+    Returns a reference to the element at specified location @a idx.
+
+    @note If @a idx is beyond the range of the array (i.e., `idx >= size()`),
+    then the array is silently filled up with `null` values to make `idx` a
+    valid reference to the last stored element.
+
+    @param[in] idx  index of the element to access
+
+    @return reference to the element at index @a idx
+
+    @throw type_error.305 if the JSON value is not an array or null; in that
+    cases, using the [] operator with an index makes no sense.
+
+    @complexity Constant if @a idx is in the range of the array. Otherwise
+    linear in `idx - size()`.
+
+    @liveexample{The example below shows how array elements can be read and
+    written using `[]` operator. Note the addition of `null`
+    values.,operatorarray__size_type}
+
+    @since version 1.0.0
+    */
+    reference operator[](size_type idx)
+    {
+        // implicitly convert null value to an empty array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value.array = create<array_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // fill up array with null values if given idx is outside range
+            if (idx >= m_value.array->size())
+            {
+                m_value.array->insert(m_value.array->end(),
+                                      idx - m_value.array->size() + 1,
+                                      basic_json());
+            }
+
+            return m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief access specified array element
+
+    Returns a const reference to the element at specified location @a idx.
+
+    @param[in] idx  index of the element to access
+
+    @return const reference to the element at index @a idx
+
+    @throw type_error.305 if the JSON value is not an array; in that case,
+    using the [] operator with an index makes no sense.
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how array elements can be read using
+    the `[]` operator.,operatorarray__size_type_const}
+
+    @since version 1.0.0
+    */
+    const_reference operator[](size_type idx) const
+    {
+        // const operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            return m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief access specified object element
+
+    Returns a reference to the element at with specified key @a key.
+
+    @note If @a key is not found in the object, then it is silently added to
+    the object and filled with a `null` value to make `key` a valid reference.
+    In case the value was `null` before, it is converted to an object.
+
+    @param[in] key  key of the element to access
+
+    @return reference to the element at key @a key
+
+    @throw type_error.305 if the JSON value is not an object or null; in that
+    cases, using the [] operator with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be read and
+    written using the `[]` operator.,operatorarray__key_type}
+
+    @sa @ref at(const typename object_t::key_type&) for access by reference
+    with range checking
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.0.0
+    */
+    reference operator[](const typename object_t::key_type& key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return m_value.object->operator[](key);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief read-only access specified object element
+
+    Returns a const reference to the element at with specified key @a key. No
+    bounds checking is performed.
+
+    @warning If the element with key @a key does not exist, the behavior is
+    undefined.
+
+    @param[in] key  key of the element to access
+
+    @return const reference to the element at key @a key
+
+    @pre The element with key @a key must exist. **This precondition is
+         enforced with an assertion.**
+
+    @throw type_error.305 if the JSON value is not an object; in that case,
+    using the [] operator with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be read using
+    the `[]` operator.,operatorarray__key_type_const}
+
+    @sa @ref at(const typename object_t::key_type&) for access by reference
+    with range checking
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.0.0
+    */
+    const_reference operator[](const typename object_t::key_type& key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_ASSERT(m_value.object->find(key) != m_value.object->end());
+            return m_value.object->find(key)->second;
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief access specified object element
+
+    Returns a reference to the element at with specified key @a key.
+
+    @note If @a key is not found in the object, then it is silently added to
+    the object and filled with a `null` value to make `key` a valid reference.
+    In case the value was `null` before, it is converted to an object.
+
+    @param[in] key  key of the element to access
+
+    @return reference to the element at key @a key
+
+    @throw type_error.305 if the JSON value is not an object or null; in that
+    cases, using the [] operator with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be read and
+    written using the `[]` operator.,operatorarray__key_type}
+
+    @sa @ref at(const typename object_t::key_type&) for access by reference
+    with range checking
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.1.0
+    */
+    template<typename T>
+    JSON_HEDLEY_NON_NULL(2)
+    reference operator[](T* key)
+    {
+        // implicitly convert null to object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return m_value.object->operator[](key);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief read-only access specified object element
+
+    Returns a const reference to the element at with specified key @a key. No
+    bounds checking is performed.
+
+    @warning If the element with key @a key does not exist, the behavior is
+    undefined.
+
+    @param[in] key  key of the element to access
+
+    @return const reference to the element at key @a key
+
+    @pre The element with key @a key must exist. **This precondition is
+         enforced with an assertion.**
+
+    @throw type_error.305 if the JSON value is not an object; in that case,
+    using the [] operator with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be read using
+    the `[]` operator.,operatorarray__key_type_const}
+
+    @sa @ref at(const typename object_t::key_type&) for access by reference
+    with range checking
+    @sa @ref value() for access by value with a default value
+
+    @since version 1.1.0
+    */
+    template<typename T>
+    JSON_HEDLEY_NON_NULL(2)
+    const_reference operator[](T* key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_ASSERT(m_value.object->find(key) != m_value.object->end());
+            return m_value.object->find(key)->second;
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief access specified object element with default value
+
+    Returns either a copy of an object's element at the specified key @a key
+    or a given default value if no element with key @a key exists.
+
+    The function is basically equivalent to executing
+    @code {.cpp}
+    try {
+        return at(key);
+    } catch(out_of_range) {
+        return default_value;
+    }
+    @endcode
+
+    @note Unlike @ref at(const typename object_t::key_type&), this function
+    does not throw if the given key @a key was not found.
+
+    @note Unlike @ref operator[](const typename object_t::key_type& key), this
+    function does not implicitly add an element to the position defined by @a
+    key. This function is furthermore also applicable to const objects.
+
+    @param[in] key  key of the element to access
+    @param[in] default_value  the value to return if @a key is not found
+
+    @tparam ValueType type compatible to JSON values, for instance `int` for
+    JSON integer numbers, `bool` for JSON booleans, or `std::vector` types for
+    JSON arrays. Note the type of the expected value at @a key and the default
+    value @a default_value must be compatible.
+
+    @return copy of the element at key @a key or @a default_value if @a key
+    is not found
+
+    @throw type_error.302 if @a default_value does not match the type of the
+    value at @a key
+    @throw type_error.306 if the JSON value is not an object; in that case,
+    using `value()` with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be queried
+    with a default value.,basic_json__value}
+
+    @sa @ref at(const typename object_t::key_type&) for access by reference
+    with range checking
+    @sa @ref operator[](const typename object_t::key_type&) for unchecked
+    access by reference
+
+    @since version 1.0.0
+    */
+    // using std::is_convertible in a std::enable_if will fail when using explicit conversions
+    template < class ValueType, typename std::enable_if <
+                   detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, ValueType>::value, int >::type = 0 >
+    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief overload for a default value of type const char*
+    @copydoc basic_json::value(const typename object_t::key_type&, const ValueType&) const
+    */
+    string_t value(const typename object_t::key_type& key, const char* default_value) const
+    {
+        return value(key, string_t(default_value));
+    }
+
+    /*!
+    @brief access specified object element via JSON Pointer with default value
+
+    Returns either a copy of an object's element at the specified key @a key
+    or a given default value if no element with key @a key exists.
+
+    The function is basically equivalent to executing
+    @code {.cpp}
+    try {
+        return at(ptr);
+    } catch(out_of_range) {
+        return default_value;
+    }
+    @endcode
+
+    @note Unlike @ref at(const json_pointer&), this function does not throw
+    if the given key @a key was not found.
+
+    @param[in] ptr  a JSON pointer to the element to access
+    @param[in] default_value  the value to return if @a ptr found no value
+
+    @tparam ValueType type compatible to JSON values, for instance `int` for
+    JSON integer numbers, `bool` for JSON booleans, or `std::vector` types for
+    JSON arrays. Note the type of the expected value at @a key and the default
+    value @a default_value must be compatible.
+
+    @return copy of the element at key @a key or @a default_value if @a key
+    is not found
+
+    @throw type_error.302 if @a default_value does not match the type of the
+    value at @a ptr
+    @throw type_error.306 if the JSON value is not an object; in that case,
+    using `value()` with a key makes no sense.
+
+    @complexity Logarithmic in the size of the container.
+
+    @liveexample{The example below shows how object elements can be queried
+    with a default value.,basic_json__value_ptr}
+
+    @sa @ref operator[](const json_pointer&) for unchecked access by reference
+
+    @since version 2.0.2
+    */
+    template<class ValueType, typename std::enable_if<
+                 detail::is_getable<basic_json_t, ValueType>::value, int>::type = 0>
+    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ValueType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return default_value;
+            }
+        }
+
+        JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief overload for a default value of type const char*
+    @copydoc basic_json::value(const json_pointer&, ValueType) const
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    string_t value(const json_pointer& ptr, const char* default_value) const
+    {
+        return value(ptr, string_t(default_value));
+    }
+
+    /*!
+    @brief access the first element
+
+    Returns a reference to the first element in the container. For a JSON
+    container `c`, the expression `c.front()` is equivalent to `*c.begin()`.
+
+    @return In case of a structured type (array or object), a reference to the
+    first element is returned. In case of number, string, boolean, or binary
+    values, a reference to the value is returned.
+
+    @complexity Constant.
+
+    @pre The JSON value must not be `null` (would throw `std::out_of_range`)
+    or an empty array or object (undefined behavior, **guarded by
+    assertions**).
+    @post The JSON value remains unchanged.
+
+    @throw invalid_iterator.214 when called on `null` value
+
+    @liveexample{The following code shows an example for `front()`.,front}
+
+    @sa @ref back() -- access the last element
+
+    @since version 1.0.0
+    */
+    reference front()
+    {
+        return *begin();
+    }
+
+    /*!
+    @copydoc basic_json::front()
+    */
+    const_reference front() const
+    {
+        return *cbegin();
+    }
+
+    /*!
+    @brief access the last element
+
+    Returns a reference to the last element in the container. For a JSON
+    container `c`, the expression `c.back()` is equivalent to
+    @code {.cpp}
+    auto tmp = c.end();
+    --tmp;
+    return *tmp;
+    @endcode
+
+    @return In case of a structured type (array or object), a reference to the
+    last element is returned. In case of number, string, boolean, or binary
+    values, a reference to the value is returned.
+
+    @complexity Constant.
+
+    @pre The JSON value must not be `null` (would throw `std::out_of_range`)
+    or an empty array or object (undefined behavior, **guarded by
+    assertions**).
+    @post The JSON value remains unchanged.
+
+    @throw invalid_iterator.214 when called on a `null` value. See example
+    below.
+
+    @liveexample{The following code shows an example for `back()`.,back}
+
+    @sa @ref front() -- access the first element
+
+    @since version 1.0.0
+    */
+    reference back()
+    {
+        auto tmp = end();
+        --tmp;
+        return *tmp;
+    }
+
+    /*!
+    @copydoc basic_json::back()
+    */
+    const_reference back() const
+    {
+        auto tmp = cend();
+        --tmp;
+        return *tmp;
+    }
+
+    /*!
+    @brief remove element given an iterator
+
+    Removes the element specified by iterator @a pos. The iterator @a pos must
+    be valid and dereferenceable. Thus the `end()` iterator (which is valid,
+    but is not dereferenceable) cannot be used as a value for @a pos.
+
+    If called on a primitive type other than `null`, the resulting JSON value
+    will be `null`.
+
+    @param[in] pos iterator to the element to remove
+    @return Iterator following the last removed element. If the iterator @a
+    pos refers to the last element, the `end()` iterator is returned.
+
+    @tparam IteratorType an @ref iterator or @ref const_iterator
+
+    @post Invalidates iterators and references at or after the point of the
+    erase, including the `end()` iterator.
+
+    @throw type_error.307 if called on a `null` value; example: `"cannot use
+    erase() with null"`
+    @throw invalid_iterator.202 if called on an iterator which does not belong
+    to the current JSON value; example: `"iterator does not fit current
+    value"`
+    @throw invalid_iterator.205 if called on a primitive type with invalid
+    iterator (i.e., any iterator which is not `begin()`); example: `"iterator
+    out of range"`
+
+    @complexity The complexity depends on the type:
+    - objects: amortized constant
+    - arrays: linear in distance between @a pos and the end of the container
+    - strings and binary: linear in the length of the member
+    - other types: constant
+
+    @liveexample{The example shows the result of `erase()` for different JSON
+    types.,erase__IteratorType}
+
+    @sa @ref erase(IteratorType, IteratorType) -- removes the elements in
+    the given range
+    @sa @ref erase(const typename object_t::key_type&) -- removes the element
+    from an object at the given key
+    @sa @ref erase(const size_type) -- removes the element from an array at
+    the given index
+
+    @since version 1.0.0
+    */
+    template < class IteratorType, typename std::enable_if <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int >::type
+               = 0 >
+    IteratorType erase(IteratorType pos)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
+        }
+
+        IteratorType result = end();
+
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
+                {
+                    JSON_THROW(invalid_iterator::create(205, "iterator out of range"));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
+                    m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.binary, 1);
+                    m_value.binary = nullptr;
+                }
+
+                m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_value.object->erase(pos.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_value.array->erase(pos.m_it.array_iterator);
+                break;
+            }
+
+            default:
+                JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name())));
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief remove elements given an iterator range
+
+    Removes the element specified by the range `[first; last)`. The iterator
+    @a first does not need to be dereferenceable if `first == last`: erasing
+    an empty range is a no-op.
+
+    If called on a primitive type other than `null`, the resulting JSON value
+    will be `null`.
+
+    @param[in] first iterator to the beginning of the range to remove
+    @param[in] last iterator past the end of the range to remove
+    @return Iterator following the last removed element. If the iterator @a
+    second refers to the last element, the `end()` iterator is returned.
+
+    @tparam IteratorType an @ref iterator or @ref const_iterator
+
+    @post Invalidates iterators and references at or after the point of the
+    erase, including the `end()` iterator.
+
+    @throw type_error.307 if called on a `null` value; example: `"cannot use
+    erase() with null"`
+    @throw invalid_iterator.203 if called on iterators which does not belong
+    to the current JSON value; example: `"iterators do not fit current value"`
+    @throw invalid_iterator.204 if called on a primitive type with invalid
+    iterators (i.e., if `first != begin()` and `last != end()`); example:
+    `"iterators out of range"`
+
+    @complexity The complexity depends on the type:
+    - objects: `log(size()) + std::distance(first, last)`
+    - arrays: linear in the distance between @a first and @a last, plus linear
+      in the distance between @a last and end of the container
+    - strings and binary: linear in the length of the member
+    - other types: constant
+
+    @liveexample{The example shows the result of `erase()` for different JSON
+    types.,erase__IteratorType_IteratorType}
+
+    @sa @ref erase(IteratorType) -- removes the element at a given position
+    @sa @ref erase(const typename object_t::key_type&) -- removes the element
+    from an object at the given key
+    @sa @ref erase(const size_type) -- removes the element from an array at
+    the given index
+
+    @since version 1.0.0
+    */
+    template < class IteratorType, typename std::enable_if <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int >::type
+               = 0 >
+    IteratorType erase(IteratorType first, IteratorType last)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value"));
+        }
+
+        IteratorType result = end();
+
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
+                                       || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range"));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
+                    m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.binary, 1);
+                    m_value.binary = nullptr;
+                }
+
+                m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_value.object->erase(first.m_it.object_iterator,
+                                              last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_value.array->erase(first.m_it.array_iterator,
+                                             last.m_it.array_iterator);
+                break;
+            }
+
+            default:
+                JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name())));
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief remove element from a JSON object given a key
+
+    Removes elements from a JSON object with the key value @a key.
+
+    @param[in] key value of the elements to remove
+
+    @return Number of elements removed. If @a ObjectType is the default
+    `std::map` type, the return value will always be `0` (@a key was not
+    found) or `1` (@a key was found).
+
+    @post References and iterators to the erased elements are invalidated.
+    Other references and iterators are not affected.
+
+    @throw type_error.307 when called on a type other than JSON object;
+    example: `"cannot use erase() with null"`
+
+    @complexity `log(size()) + count(key)`
+
+    @liveexample{The example shows the effect of `erase()`.,erase__key_type}
+
+    @sa @ref erase(IteratorType) -- removes the element at a given position
+    @sa @ref erase(IteratorType, IteratorType) -- removes the elements in
+    the given range
+    @sa @ref erase(const size_type) -- removes the element from an array at
+    the given index
+
+    @since version 1.0.0
+    */
+    size_type erase(const typename object_t::key_type& key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return m_value.object->erase(key);
+        }
+
+        JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief remove element from a JSON array given an index
+
+    Removes element from a JSON array at the index @a idx.
+
+    @param[in] idx index of the element to remove
+
+    @throw type_error.307 when called on a type other than JSON object;
+    example: `"cannot use erase() with null"`
+    @throw out_of_range.401 when `idx >= size()`; example: `"array index 17
+    is out of range"`
+
+    @complexity Linear in distance between @a idx and the end of the container.
+
+    @liveexample{The example shows the effect of `erase()`.,erase__size_type}
+
+    @sa @ref erase(IteratorType) -- removes the element at a given position
+    @sa @ref erase(IteratorType, IteratorType) -- removes the elements in
+    the given range
+    @sa @ref erase(const typename object_t::key_type&) -- removes the element
+    from an object at the given key
+
+    @since version 1.0.0
+    */
+    void erase(const size_type idx)
+    {
+        // this erase only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
+            {
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
+            }
+
+            m_value.array->erase(m_value.array->begin() + static_cast<difference_type>(idx));
+        }
+        else
+        {
+            JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name())));
+        }
+    }
+
+    /// @}
+
+
+    ////////////
+    // lookup //
+    ////////////
+
+    /// @name lookup
+    /// @{
+
+    /*!
+    @brief find an element in a JSON object
+
+    Finds an element in a JSON object with key equivalent to @a key. If the
+    element is not found or the JSON value is not an object, end() is
+    returned.
+
+    @note This method always returns @ref end() when executed on a JSON type
+          that is not an object.
+
+    @param[in] key key value of the element to search for.
+
+    @return Iterator to an element with key equivalent to @a key. If no such
+    element is found or the JSON value is not an object, past-the-end (see
+    @ref end()) iterator is returned.
+
+    @complexity Logarithmic in the size of the JSON object.
+
+    @liveexample{The example shows how `find()` is used.,find__key_type}
+
+    @sa @ref contains(KeyT&&) const -- checks whether a key exists
+
+    @since version 1.0.0
+    */
+    template<typename KeyT>
+    iterator find(KeyT&& key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_value.object->find(std::forward<KeyT>(key));
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief find an element in a JSON object
+    @copydoc find(KeyT&&)
+    */
+    template<typename KeyT>
+    const_iterator find(KeyT&& key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_value.object->find(std::forward<KeyT>(key));
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief returns the number of occurrences of a key in a JSON object
+
+    Returns the number of elements with key @a key. If ObjectType is the
+    default `std::map` type, the return value will always be `0` (@a key was
+    not found) or `1` (@a key was found).
+
+    @note This method always returns `0` when executed on a JSON type that is
+          not an object.
+
+    @param[in] key key value of the element to count
+
+    @return Number of elements with key @a key. If the JSON value is not an
+    object, the return value will be `0`.
+
+    @complexity Logarithmic in the size of the JSON object.
+
+    @liveexample{The example shows how `count()` is used.,count}
+
+    @since version 1.0.0
+    */
+    template<typename KeyT>
+    size_type count(KeyT&& key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_value.object->count(std::forward<KeyT>(key)) : 0;
+    }
+
+    /*!
+    @brief check the existence of an element in a JSON object
+
+    Check whether an element exists in a JSON object with key equivalent to
+    @a key. If the element is not found or the JSON value is not an object,
+    false is returned.
+
+    @note This method always returns false when executed on a JSON type
+          that is not an object.
+
+    @param[in] key key value to check its existence.
+
+    @return true if an element with specified @a key exists. If no such
+    element with such key is found or the JSON value is not an object,
+    false is returned.
+
+    @complexity Logarithmic in the size of the JSON object.
+
+    @liveexample{The following code shows an example for `contains()`.,contains}
+
+    @sa @ref find(KeyT&&) -- returns an iterator to an object element
+    @sa @ref contains(const json_pointer&) const -- checks the existence for a JSON pointer
+
+    @since version 3.6.0
+    */
+    template < typename KeyT, typename std::enable_if <
+                   !std::is_same<typename std::decay<KeyT>::type, json_pointer>::value, int >::type = 0 >
+    bool contains(KeyT && key) const
+    {
+        return is_object() && m_value.object->find(std::forward<KeyT>(key)) != m_value.object->end();
+    }
+
+    /*!
+    @brief check the existence of an element in a JSON object given a JSON pointer
+
+    Check whether the given JSON pointer @a ptr can be resolved in the current
+    JSON value.
+
+    @note This method can be executed on any JSON value type.
+
+    @param[in] ptr JSON pointer to check its existence.
+
+    @return true if the JSON pointer can be resolved to a stored value, false
+    otherwise.
+
+    @post If `j.contains(ptr)` returns true, it is safe to call `j[ptr]`.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+
+    @complexity Logarithmic in the size of the JSON object.
+
+    @liveexample{The following code shows an example for `contains()`.,contains_json_pointer}
+
+    @sa @ref contains(KeyT &&) const -- checks the existence of a key
+
+    @since version 3.7.0
+    */
+    bool contains(const json_pointer& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    /// @}
+
+
+    ///////////////
+    // iterators //
+    ///////////////
+
+    /// @name iterators
+    /// @{
+
+    /*!
+    @brief returns an iterator to the first element
+
+    Returns an iterator to the first element.
+
+    @image html range-begin-end.svg "Illustration from cppreference.com"
+
+    @return iterator to the first element
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+
+    @liveexample{The following code shows an example for `begin()`.,begin}
+
+    @sa @ref cbegin() -- returns a const iterator to the beginning
+    @sa @ref end() -- returns an iterator to the end
+    @sa @ref cend() -- returns a const iterator to the end
+
+    @since version 1.0.0
+    */
+    iterator begin() noexcept
+    {
+        iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /*!
+    @copydoc basic_json::cbegin()
+    */
+    const_iterator begin() const noexcept
+    {
+        return cbegin();
+    }
+
+    /*!
+    @brief returns a const iterator to the first element
+
+    Returns a const iterator to the first element.
+
+    @image html range-begin-end.svg "Illustration from cppreference.com"
+
+    @return const iterator to the first element
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `const_cast<const basic_json&>(*this).begin()`.
+
+    @liveexample{The following code shows an example for `cbegin()`.,cbegin}
+
+    @sa @ref begin() -- returns an iterator to the beginning
+    @sa @ref end() -- returns an iterator to the end
+    @sa @ref cend() -- returns a const iterator to the end
+
+    @since version 1.0.0
+    */
+    const_iterator cbegin() const noexcept
+    {
+        const_iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /*!
+    @brief returns an iterator to one past the last element
+
+    Returns an iterator to one past the last element.
+
+    @image html range-begin-end.svg "Illustration from cppreference.com"
+
+    @return iterator one past the last element
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+
+    @liveexample{The following code shows an example for `end()`.,end}
+
+    @sa @ref cend() -- returns a const iterator to the end
+    @sa @ref begin() -- returns an iterator to the beginning
+    @sa @ref cbegin() -- returns a const iterator to the beginning
+
+    @since version 1.0.0
+    */
+    iterator end() noexcept
+    {
+        iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /*!
+    @copydoc basic_json::cend()
+    */
+    const_iterator end() const noexcept
+    {
+        return cend();
+    }
+
+    /*!
+    @brief returns a const iterator to one past the last element
+
+    Returns a const iterator to one past the last element.
+
+    @image html range-begin-end.svg "Illustration from cppreference.com"
+
+    @return const iterator one past the last element
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `const_cast<const basic_json&>(*this).end()`.
+
+    @liveexample{The following code shows an example for `cend()`.,cend}
+
+    @sa @ref end() -- returns an iterator to the end
+    @sa @ref begin() -- returns an iterator to the beginning
+    @sa @ref cbegin() -- returns a const iterator to the beginning
+
+    @since version 1.0.0
+    */
+    const_iterator cend() const noexcept
+    {
+        const_iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /*!
+    @brief returns an iterator to the reverse-beginning
+
+    Returns an iterator to the reverse-beginning; that is, the last element.
+
+    @image html range-rbegin-rend.svg "Illustration from cppreference.com"
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `reverse_iterator(end())`.
+
+    @liveexample{The following code shows an example for `rbegin()`.,rbegin}
+
+    @sa @ref crbegin() -- returns a const reverse iterator to the beginning
+    @sa @ref rend() -- returns a reverse iterator to the end
+    @sa @ref crend() -- returns a const reverse iterator to the end
+
+    @since version 1.0.0
+    */
+    reverse_iterator rbegin() noexcept
+    {
+        return reverse_iterator(end());
+    }
+
+    /*!
+    @copydoc basic_json::crbegin()
+    */
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return crbegin();
+    }
+
+    /*!
+    @brief returns an iterator to the reverse-end
+
+    Returns an iterator to the reverse-end; that is, one before the first
+    element.
+
+    @image html range-rbegin-rend.svg "Illustration from cppreference.com"
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `reverse_iterator(begin())`.
+
+    @liveexample{The following code shows an example for `rend()`.,rend}
+
+    @sa @ref crend() -- returns a const reverse iterator to the end
+    @sa @ref rbegin() -- returns a reverse iterator to the beginning
+    @sa @ref crbegin() -- returns a const reverse iterator to the beginning
+
+    @since version 1.0.0
+    */
+    reverse_iterator rend() noexcept
+    {
+        return reverse_iterator(begin());
+    }
+
+    /*!
+    @copydoc basic_json::crend()
+    */
+    const_reverse_iterator rend() const noexcept
+    {
+        return crend();
+    }
+
+    /*!
+    @brief returns a const reverse iterator to the last element
+
+    Returns a const iterator to the reverse-beginning; that is, the last
+    element.
+
+    @image html range-rbegin-rend.svg "Illustration from cppreference.com"
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `const_cast<const basic_json&>(*this).rbegin()`.
+
+    @liveexample{The following code shows an example for `crbegin()`.,crbegin}
+
+    @sa @ref rbegin() -- returns a reverse iterator to the beginning
+    @sa @ref rend() -- returns a reverse iterator to the end
+    @sa @ref crend() -- returns a const reverse iterator to the end
+
+    @since version 1.0.0
+    */
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return const_reverse_iterator(cend());
+    }
+
+    /*!
+    @brief returns a const reverse iterator to one before the first
+
+    Returns a const reverse iterator to the reverse-end; that is, one before
+    the first element.
+
+    @image html range-rbegin-rend.svg "Illustration from cppreference.com"
+
+    @complexity Constant.
+
+    @requirement This function helps `basic_json` satisfying the
+    [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `const_cast<const basic_json&>(*this).rend()`.
+
+    @liveexample{The following code shows an example for `crend()`.,crend}
+
+    @sa @ref rend() -- returns a reverse iterator to the end
+    @sa @ref rbegin() -- returns a reverse iterator to the beginning
+    @sa @ref crbegin() -- returns a const reverse iterator to the beginning
+
+    @since version 1.0.0
+    */
+    const_reverse_iterator crend() const noexcept
+    {
+        return const_reverse_iterator(cbegin());
+    }
+
+  public:
+    /*!
+    @brief wrapper to access iterator member functions in range-based for
+
+    This function allows to access @ref iterator::key() and @ref
+    iterator::value() during range-based for loops. In these loops, a
+    reference to the JSON values is returned, so there is no access to the
+    underlying iterator.
+
+    For loop without iterator_wrapper:
+
+    @code{cpp}
+    for (auto it = j_object.begin(); it != j_object.end(); ++it)
+    {
+        std::cout << "key: " << it.key() << ", value:" << it.value() << '\n';
+    }
+    @endcode
+
+    Range-based for loop without iterator proxy:
+
+    @code{cpp}
+    for (auto it : j_object)
+    {
+        // "it" is of type json::reference and has no key() member
+        std::cout << "value: " << it << '\n';
+    }
+    @endcode
+
+    Range-based for loop with iterator proxy:
+
+    @code{cpp}
+    for (auto it : json::iterator_wrapper(j_object))
+    {
+        std::cout << "key: " << it.key() << ", value:" << it.value() << '\n';
+    }
+    @endcode
+
+    @note When iterating over an array, `key()` will return the index of the
+          element as string (see example).
+
+    @param[in] ref  reference to a JSON value
+    @return iteration proxy object wrapping @a ref with an interface to use in
+            range-based for loops
+
+    @liveexample{The following code shows how the wrapper is used,iterator_wrapper}
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @note The name of this function is not yet final and may change in the
+    future.
+
+    @deprecated This stream operator is deprecated and will be removed in
+                future 4.0.0 of the library. Please use @ref items() instead;
+                that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    */
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /*!
+    @copydoc iterator_wrapper(reference)
+    */
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /*!
+    @brief helper to access iterator member functions in range-based for
+
+    This function allows to access @ref iterator::key() and @ref
+    iterator::value() during range-based for loops. In these loops, a
+    reference to the JSON values is returned, so there is no access to the
+    underlying iterator.
+
+    For loop without `items()` function:
+
+    @code{cpp}
+    for (auto it = j_object.begin(); it != j_object.end(); ++it)
+    {
+        std::cout << "key: " << it.key() << ", value:" << it.value() << '\n';
+    }
+    @endcode
+
+    Range-based for loop without `items()` function:
+
+    @code{cpp}
+    for (auto it : j_object)
+    {
+        // "it" is of type json::reference and has no key() member
+        std::cout << "value: " << it << '\n';
+    }
+    @endcode
+
+    Range-based for loop with `items()` function:
+
+    @code{cpp}
+    for (auto& el : j_object.items())
+    {
+        std::cout << "key: " << el.key() << ", value:" << el.value() << '\n';
+    }
+    @endcode
+
+    The `items()` function also allows to use
+    [structured bindings](https://en.cppreference.com/w/cpp/language/structured_binding)
+    (C++17):
+
+    @code{cpp}
+    for (auto& [key, val] : j_object.items())
+    {
+        std::cout << "key: " << key << ", value:" << val << '\n';
+    }
+    @endcode
+
+    @note When iterating over an array, `key()` will return the index of the
+          element as string (see example). For primitive types (e.g., numbers),
+          `key()` returns an empty string.
+
+    @warning Using `items()` on temporary objects is dangerous. Make sure the
+             object's lifetime exeeds the iteration. See
+             <https://github.com/nlohmann/json/issues/2040> for more
+             information.
+
+    @return iteration proxy object wrapping @a ref with an interface to use in
+            range-based for loops
+
+    @liveexample{The following code shows how the function is used.,items}
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @since version 3.1.0, structured bindings support since 3.5.0.
+    */
+    iteration_proxy<iterator> items() noexcept
+    {
+        return iteration_proxy<iterator>(*this);
+    }
+
+    /*!
+    @copydoc items()
+    */
+    iteration_proxy<const_iterator> items() const noexcept
+    {
+        return iteration_proxy<const_iterator>(*this);
+    }
+
+    /// @}
+
+
+    //////////////
+    // capacity //
+    //////////////
+
+    /// @name capacity
+    /// @{
+
+    /*!
+    @brief checks whether the container is empty.
+
+    Checks if a JSON value has no elements (i.e. whether its @ref size is `0`).
+
+    @return The return value depends on the different types and is
+            defined as follows:
+            Value type  | return value
+            ----------- | -------------
+            null        | `true`
+            boolean     | `false`
+            string      | `false`
+            number      | `false`
+            binary      | `false`
+            object      | result of function `object_t::empty()`
+            array       | result of function `array_t::empty()`
+
+    @liveexample{The following code uses `empty()` to check if a JSON
+    object contains any elements.,empty}
+
+    @complexity Constant, as long as @ref array_t and @ref object_t satisfy
+    the Container concept; that is, their `empty()` functions have constant
+    complexity.
+
+    @iterators No changes.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @note This function does not return whether a string stored as JSON value
+    is empty - it returns whether the JSON container itself is empty which is
+    false in the case of a string.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `begin() == end()`.
+
+    @sa @ref size() -- returns the number of elements
+
+    @since version 1.0.0
+    */
+    bool empty() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return true;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::empty()
+                return m_value.array->empty();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::empty()
+                return m_value.object->empty();
+            }
+
+            default:
+            {
+                // all other types are nonempty
+                return false;
+            }
+        }
+    }
+
+    /*!
+    @brief returns the number of elements
+
+    Returns the number of elements in a JSON value.
+
+    @return The return value depends on the different types and is
+            defined as follows:
+            Value type  | return value
+            ----------- | -------------
+            null        | `0`
+            boolean     | `1`
+            string      | `1`
+            number      | `1`
+            binary      | `1`
+            object      | result of function object_t::size()
+            array       | result of function array_t::size()
+
+    @liveexample{The following code calls `size()` on the different value
+    types.,size}
+
+    @complexity Constant, as long as @ref array_t and @ref object_t satisfy
+    the Container concept; that is, their size() functions have constant
+    complexity.
+
+    @iterators No changes.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @note This function does not return the length of a string stored as JSON
+    value - it returns the number of elements in the JSON value which is 1 in
+    the case of a string.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of `std::distance(begin(), end())`.
+
+    @sa @ref empty() -- checks whether the container is empty
+    @sa @ref max_size() -- returns the maximal number of elements
+
+    @since version 1.0.0
+    */
+    size_type size() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return 0;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::size()
+                return m_value.array->size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::size()
+                return m_value.object->size();
+            }
+
+            default:
+            {
+                // all other types have size 1
+                return 1;
+            }
+        }
+    }
+
+    /*!
+    @brief returns the maximum possible number of elements
+
+    Returns the maximum number of elements a JSON value is able to hold due to
+    system or library implementation limitations, i.e. `std::distance(begin(),
+    end())` for the JSON value.
+
+    @return The return value depends on the different types and is
+            defined as follows:
+            Value type  | return value
+            ----------- | -------------
+            null        | `0` (same as `size()`)
+            boolean     | `1` (same as `size()`)
+            string      | `1` (same as `size()`)
+            number      | `1` (same as `size()`)
+            binary      | `1` (same as `size()`)
+            object      | result of function `object_t::max_size()`
+            array       | result of function `array_t::max_size()`
+
+    @liveexample{The following code calls `max_size()` on the different value
+    types. Note the output is implementation specific.,max_size}
+
+    @complexity Constant, as long as @ref array_t and @ref object_t satisfy
+    the Container concept; that is, their `max_size()` functions have constant
+    complexity.
+
+    @iterators No changes.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @requirement This function helps `basic_json` satisfying the
+    [Container](https://en.cppreference.com/w/cpp/named_req/Container)
+    requirements:
+    - The complexity is constant.
+    - Has the semantics of returning `b.size()` where `b` is the largest
+      possible JSON value.
+
+    @sa @ref size() -- returns the number of elements
+
+    @since version 1.0.0
+    */
+    size_type max_size() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::array:
+            {
+                // delegate call to array_t::max_size()
+                return m_value.array->max_size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::max_size()
+                return m_value.object->max_size();
+            }
+
+            default:
+            {
+                // all other types have max_size() == size()
+                return size();
+            }
+        }
+    }
+
+    /// @}
+
+
+    ///////////////
+    // modifiers //
+    ///////////////
+
+    /// @name modifiers
+    /// @{
+
+    /*!
+    @brief clears the contents
+
+    Clears the content of a JSON value and resets it to the default value as
+    if @ref basic_json(value_t) would have been called with the current value
+    type from @ref type():
+
+    Value type  | initial value
+    ----------- | -------------
+    null        | `null`
+    boolean     | `false`
+    string      | `""`
+    number      | `0`
+    binary      | An empty byte vector
+    object      | `{}`
+    array       | `[]`
+
+    @post Has the same effect as calling
+    @code {.cpp}
+    *this = basic_json(type());
+    @endcode
+
+    @liveexample{The example below shows the effect of `clear()` to different
+    JSON types.,clear}
+
+    @complexity Linear in the size of the JSON value.
+
+    @iterators All iterators, pointers and references related to this container
+               are invalidated.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @sa @ref basic_json(value_t) -- constructor that creates an object with the
+        same value than calling `clear()`
+
+    @since version 1.0.0
+    */
+    void clear() noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_value.number_integer = 0;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value.number_unsigned = 0;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value.number_float = 0.0;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value.boolean = false;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value.string->clear();
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value.binary->clear();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value.array->clear();
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_value.object->clear();
+                break;
+            }
+
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @brief add an object to an array
+
+    Appends the given element @a val to the end of the JSON value. If the
+    function is called on a JSON null value, an empty array is created before
+    appending @a val.
+
+    @param[in] val the value to add to the JSON array
+
+    @throw type_error.308 when called on a type other than JSON array or
+    null; example: `"cannot use push_back() with number"`
+
+    @complexity Amortized constant.
+
+    @liveexample{The example shows how `push_back()` and `+=` can be used to
+    add elements to a JSON array. Note how the `null` value was silently
+    converted to a JSON array.,push_back}
+
+    @since version 1.0.0
+    */
+    void push_back(basic_json&& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name())));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (move semantics)
+        m_value.array->push_back(std::move(val));
+        // if val is moved from, basic_json move constructor marks it null so we do not call the destructor
+    }
+
+    /*!
+    @brief add an object to an array
+    @copydoc push_back(basic_json&&)
+    */
+    reference operator+=(basic_json&& val)
+    {
+        push_back(std::move(val));
+        return *this;
+    }
+
+    /*!
+    @brief add an object to an array
+    @copydoc push_back(basic_json&&)
+    */
+    void push_back(const basic_json& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name())));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array
+        m_value.array->push_back(val);
+    }
+
+    /*!
+    @brief add an object to an array
+    @copydoc push_back(basic_json&&)
+    */
+    reference operator+=(const basic_json& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /*!
+    @brief add an object to an object
+
+    Inserts the given element @a val to the JSON object. If the function is
+    called on a JSON null value, an empty object is created before inserting
+    @a val.
+
+    @param[in] val the value to add to the JSON object
+
+    @throw type_error.308 when called on a type other than JSON object or
+    null; example: `"cannot use push_back() with number"`
+
+    @complexity Logarithmic in the size of the container, O(log(`size()`)).
+
+    @liveexample{The example shows how `push_back()` and `+=` can be used to
+    add elements to a JSON object. Note how the `null` value was silently
+    converted to a JSON object.,push_back__object_t__value}
+
+    @since version 1.0.0
+    */
+    void push_back(const typename object_t::value_type& val)
+    {
+        // push_back only works for null objects or objects
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name())));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array
+        m_value.object->insert(val);
+    }
+
+    /*!
+    @brief add an object to an object
+    @copydoc push_back(const typename object_t::value_type&)
+    */
+    reference operator+=(const typename object_t::value_type& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /*!
+    @brief add an object to an object
+
+    This function allows to use `push_back` with an initializer list. In case
+
+    1. the current value is an object,
+    2. the initializer list @a init contains only two elements, and
+    3. the first element of @a init is a string,
+
+    @a init is converted into an object element and added using
+    @ref push_back(const typename object_t::value_type&). Otherwise, @a init
+    is converted to a JSON value and added using @ref push_back(basic_json&&).
+
+    @param[in] init  an initializer list
+
+    @complexity Linear in the size of the initializer list @a init.
+
+    @note This function is required to resolve an ambiguous overload error,
+          because pairs like `{"key", "value"}` can be both interpreted as
+          `object_t::value_type` or `std::initializer_list<basic_json>`, see
+          https://github.com/nlohmann/json/issues/235 for more information.
+
+    @liveexample{The example shows how initializer lists are treated as
+    objects when possible.,push_back__initializer_list}
+    */
+    void push_back(initializer_list_t init)
+    {
+        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
+        {
+            basic_json&& key = init.begin()->moved_or_copied();
+            push_back(typename object_t::value_type(
+                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
+        }
+        else
+        {
+            push_back(basic_json(init));
+        }
+    }
+
+    /*!
+    @brief add an object to an object
+    @copydoc push_back(initializer_list_t)
+    */
+    reference operator+=(initializer_list_t init)
+    {
+        push_back(init);
+        return *this;
+    }
+
+    /*!
+    @brief add an object to an array
+
+    Creates a JSON value from the passed parameters @a args to the end of the
+    JSON value. If the function is called on a JSON null value, an empty array
+    is created before appending the value created from @a args.
+
+    @param[in] args arguments to forward to a constructor of @ref basic_json
+    @tparam Args compatible types to create a @ref basic_json object
+
+    @return reference to the inserted element
+
+    @throw type_error.311 when called on a type other than JSON array or
+    null; example: `"cannot use emplace_back() with number"`
+
+    @complexity Amortized constant.
+
+    @liveexample{The example shows how `push_back()` can be used to add
+    elements to a JSON array. Note how the `null` value was silently converted
+    to a JSON array.,emplace_back}
+
+    @since version 2.0.8, returns reference since 3.7.0
+    */
+    template<class... Args>
+    reference emplace_back(Args&& ... args)
+    {
+        // emplace_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(311, "cannot use emplace_back() with " + std::string(type_name())));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+#ifdef JSON_HAS_CPP_17
+        return m_value.array->emplace_back(std::forward<Args>(args)...);
+#else
+        m_value.array->emplace_back(std::forward<Args>(args)...);
+        return m_value.array->back();
+#endif
+    }
+
+    /*!
+    @brief add an object to an object if key does not exist
+
+    Inserts a new element into a JSON object constructed in-place with the
+    given @a args if there is no element with the key in the container. If the
+    function is called on a JSON null value, an empty object is created before
+    appending the value created from @a args.
+
+    @param[in] args arguments to forward to a constructor of @ref basic_json
+    @tparam Args compatible types to create a @ref basic_json object
+
+    @return a pair consisting of an iterator to the inserted element, or the
+            already-existing element if no insertion happened, and a bool
+            denoting whether the insertion took place.
+
+    @throw type_error.311 when called on a type other than JSON object or
+    null; example: `"cannot use emplace() with number"`
+
+    @complexity Logarithmic in the size of the container, O(log(`size()`)).
+
+    @liveexample{The example shows how `emplace()` can be used to add elements
+    to a JSON object. Note how the `null` value was silently converted to a
+    JSON object. Further note how no value is added if there was already one
+    value stored with the same key.,emplace}
+
+    @since version 2.0.8
+    */
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        // emplace only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(311, "cannot use emplace() with " + std::string(type_name())));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        auto res = m_value.object->emplace(std::forward<Args>(args)...);
+        // create result iterator and set iterator to the result of emplace
+        auto it = begin();
+        it.m_it.object_iterator = res.first;
+
+        // return pair of iterator and boolean
+        return {it, res.second};
+    }
+
+    /// Helper for insertion of an iterator
+    /// @note: This uses std::distance to support GCC 4.8,
+    ///        see https://github.com/nlohmann/json/pull/1257
+    template<typename... Args>
+    iterator insert_iterator(const_iterator pos, Args&& ... args)
+    {
+        iterator result(this);
+        JSON_ASSERT(m_value.array != nullptr);
+
+        auto insert_pos = std::distance(m_value.array->begin(), pos.m_it.array_iterator);
+        m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
+        result.m_it.array_iterator = m_value.array->begin() + insert_pos;
+
+        // This could have been written as:
+        // result.m_it.array_iterator = m_value.array->insert(pos.m_it.array_iterator, cnt, val);
+        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
+
+        return result;
+    }
+
+    /*!
+    @brief inserts element
+
+    Inserts element @a val before iterator @a pos.
+
+    @param[in] pos iterator before which the content will be inserted; may be
+    the end() iterator
+    @param[in] val element to insert
+    @return iterator pointing to the inserted @a val.
+
+    @throw type_error.309 if called on JSON values other than arrays;
+    example: `"cannot use insert() with string"`
+    @throw invalid_iterator.202 if @a pos is not an iterator of *this;
+    example: `"iterator does not fit current value"`
+
+    @complexity Constant plus linear in the distance between @a pos and end of
+    the container.
+
+    @liveexample{The example shows how `insert()` is used.,insert}
+
+    @since version 1.0.0
+    */
+    iterator insert(const_iterator pos, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, val);
+        }
+
+        JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief inserts element
+    @copydoc insert(const_iterator, const basic_json&)
+    */
+    iterator insert(const_iterator pos, basic_json&& val)
+    {
+        return insert(pos, val);
+    }
+
+    /*!
+    @brief inserts elements
+
+    Inserts @a cnt copies of @a val before iterator @a pos.
+
+    @param[in] pos iterator before which the content will be inserted; may be
+    the end() iterator
+    @param[in] cnt number of copies of @a val to insert
+    @param[in] val element to insert
+    @return iterator pointing to the first element inserted, or @a pos if
+    `cnt==0`
+
+    @throw type_error.309 if called on JSON values other than arrays; example:
+    `"cannot use insert() with string"`
+    @throw invalid_iterator.202 if @a pos is not an iterator of *this;
+    example: `"iterator does not fit current value"`
+
+    @complexity Linear in @a cnt plus linear in the distance between @a pos
+    and end of the container.
+
+    @liveexample{The example shows how `insert()` is used.,insert__count}
+
+    @since version 1.0.0
+    */
+    iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, cnt, val);
+        }
+
+        JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
+    }
+
+    /*!
+    @brief inserts elements
+
+    Inserts elements from range `[first, last)` before iterator @a pos.
+
+    @param[in] pos iterator before which the content will be inserted; may be
+    the end() iterator
+    @param[in] first begin of the range of elements to insert
+    @param[in] last end of the range of elements to insert
+
+    @throw type_error.309 if called on JSON values other than arrays; example:
+    `"cannot use insert() with string"`
+    @throw invalid_iterator.202 if @a pos is not an iterator of *this;
+    example: `"iterator does not fit current value"`
+    @throw invalid_iterator.210 if @a first and @a last do not belong to the
+    same JSON value; example: `"iterators do not fit"`
+    @throw invalid_iterator.211 if @a first or @a last are iterators into
+    container for which insert is called; example: `"passed iterators may not
+    belong to container"`
+
+    @return iterator pointing to the first element inserted, or @a pos if
+    `first==last`
+
+    @complexity Linear in `std::distance(first, last)` plus linear in the
+    distance between @a pos and end of the container.
+
+    @liveexample{The example shows how `insert()` is used.,insert__range}
+
+    @since version 1.0.0
+    */
+    iterator insert(const_iterator pos, const_iterator first, const_iterator last)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit"));
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
+        {
+            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container"));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
+    }
+
+    /*!
+    @brief inserts elements
+
+    Inserts elements from initializer list @a ilist before iterator @a pos.
+
+    @param[in] pos iterator before which the content will be inserted; may be
+    the end() iterator
+    @param[in] ilist initializer list to insert the values from
+
+    @throw type_error.309 if called on JSON values other than arrays; example:
+    `"cannot use insert() with string"`
+    @throw invalid_iterator.202 if @a pos is not an iterator of *this;
+    example: `"iterator does not fit current value"`
+
+    @return iterator pointing to the first element inserted, or @a pos if
+    `ilist` is empty
+
+    @complexity Linear in `ilist.size()` plus linear in the distance between
+    @a pos and end of the container.
+
+    @liveexample{The example shows how `insert()` is used.,insert__ilist}
+
+    @since version 1.0.0
+    */
+    iterator insert(const_iterator pos, initializer_list_t ilist)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, ilist.begin(), ilist.end());
+    }
+
+    /*!
+    @brief inserts elements
+
+    Inserts elements from range `[first, last)`.
+
+    @param[in] first begin of the range of elements to insert
+    @param[in] last end of the range of elements to insert
+
+    @throw type_error.309 if called on JSON values other than objects; example:
+    `"cannot use insert() with string"`
+    @throw invalid_iterator.202 if iterator @a first or @a last does does not
+    point to an object; example: `"iterators first and last must point to
+    objects"`
+    @throw invalid_iterator.210 if @a first and @a last do not belong to the
+    same JSON value; example: `"iterators do not fit"`
+
+    @complexity Logarithmic: `O(N*log(size() + N))`, where `N` is the number
+    of elements to insert.
+
+    @liveexample{The example shows how `insert()` is used.,insert__range_object}
+
+    @since version 3.0.0
+    */
+    void insert(const_iterator first, const_iterator last)
+    {
+        // insert only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit"));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects"));
+        }
+
+        m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
+    }
+
+    /*!
+    @brief updates a JSON object from another object, overwriting existing keys
+
+    Inserts all values from JSON object @a j and overwrites existing keys.
+
+    @param[in] j  JSON object to read values from
+
+    @throw type_error.312 if called on JSON values other than objects; example:
+    `"cannot use update() with string"`
+
+    @complexity O(N*log(size() + N)), where N is the number of elements to
+                insert.
+
+    @liveexample{The example shows how `update()` is used.,update}
+
+    @sa https://docs.python.org/3.6/library/stdtypes.html#dict.update
+
+    @since version 3.0.0
+    */
+    void update(const_reference j)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(type_name())));
+        }
+        if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+        {
+            JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(j.type_name())));
+        }
+
+        for (auto it = j.cbegin(); it != j.cend(); ++it)
+        {
+            m_value.object->operator[](it.key()) = it.value();
+        }
+    }
+
+    /*!
+    @brief updates a JSON object from another object, overwriting existing keys
+
+    Inserts all values from from range `[first, last)` and overwrites existing
+    keys.
+
+    @param[in] first begin of the range of elements to insert
+    @param[in] last end of the range of elements to insert
+
+    @throw type_error.312 if called on JSON values other than objects; example:
+    `"cannot use update() with string"`
+    @throw invalid_iterator.202 if iterator @a first or @a last does does not
+    point to an object; example: `"iterators first and last must point to
+    objects"`
+    @throw invalid_iterator.210 if @a first and @a last do not belong to the
+    same JSON value; example: `"iterators do not fit"`
+
+    @complexity O(N*log(size() + N)), where N is the number of elements to
+                insert.
+
+    @liveexample{The example shows how `update()` is used__range.,update}
+
+    @sa https://docs.python.org/3.6/library/stdtypes.html#dict.update
+
+    @since version 3.0.0
+    */
+    void update(const_iterator first, const_iterator last)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(type_name())));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit"));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()
+                                 || !last.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects"));
+        }
+
+        for (auto it = first; it != last; ++it)
+        {
+            m_value.object->operator[](it.key()) = it.value();
+        }
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of the JSON value with those of @a other. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated.
+
+    @param[in,out] other JSON value to exchange the contents with
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how JSON values can be swapped with
+    `swap()`.,swap__reference}
+
+    @since version 1.0.0
+    */
+    void swap(reference other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        std::swap(m_type, other.m_type);
+        std::swap(m_value, other.m_value);
+        assert_invariant();
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of the JSON value from @a left with those of @a right. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated. implemented as a friend function callable via ADL.
+
+    @param[in,out] left JSON value to exchange the contents with
+    @param[in,out] right JSON value to exchange the contents with
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how JSON values can be swapped with
+    `swap()`.,swap__reference}
+
+    @since version 1.0.0
+    */
+    friend void swap(reference left, reference right) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        left.swap(right);
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of a JSON array with those of @a other. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated.
+
+    @param[in,out] other array to exchange the contents with
+
+    @throw type_error.310 when JSON value is not an array; example: `"cannot
+    use swap() with string"`
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how arrays can be swapped with
+    `swap()`.,swap__array_t}
+
+    @since version 1.0.0
+    */
+    void swap(array_t& other)
+    {
+        // swap only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            std::swap(*(m_value.array), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of a JSON object with those of @a other. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated.
+
+    @param[in,out] other object to exchange the contents with
+
+    @throw type_error.310 when JSON value is not an object; example:
+    `"cannot use swap() with string"`
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how objects can be swapped with
+    `swap()`.,swap__object_t}
+
+    @since version 1.0.0
+    */
+    void swap(object_t& other)
+    {
+        // swap only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            std::swap(*(m_value.object), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of a JSON string with those of @a other. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated.
+
+    @param[in,out] other string to exchange the contents with
+
+    @throw type_error.310 when JSON value is not a string; example: `"cannot
+    use swap() with boolean"`
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how strings can be swapped with
+    `swap()`.,swap__string_t}
+
+    @since version 1.0.0
+    */
+    void swap(string_t& other)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_string()))
+        {
+            std::swap(*(m_value.string), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
+        }
+    }
+
+    /*!
+    @brief exchanges the values
+
+    Exchanges the contents of a JSON string with those of @a other. Does not
+    invoke any move, copy, or swap operations on individual elements. All
+    iterators and references remain valid. The past-the-end iterator is
+    invalidated.
+
+    @param[in,out] other binary to exchange the contents with
+
+    @throw type_error.310 when JSON value is not a string; example: `"cannot
+    use swap() with boolean"`
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how strings can be swapped with
+    `swap()`.,swap__binary_t}
+
+    @since version 3.8.0
+    */
+    void swap(binary_t& other)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            std::swap(*(m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
+        }
+    }
+
+    /// @copydoc swap(binary_t)
+    void swap(typename binary_t::container_type& other)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            std::swap(*(m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
+        }
+    }
+
+    /// @}
+
+  public:
+    //////////////////////////////////////////
+    // lexicographical comparison operators //
+    //////////////////////////////////////////
+
+    /// @name lexicographical comparison operators
+    /// @{
+
+    /*!
+    @brief comparison: equal
+
+    Compares two JSON values for equality according to the following rules:
+    - Two JSON values are equal if (1) they are from the same type and (2)
+      their stored values are the same according to their respective
+      `operator==`.
+    - Integer and floating-point numbers are automatically converted before
+      comparison. Note that two NaN values are always treated as unequal.
+    - Two JSON null values are equal.
+
+    @note Floating-point inside JSON values numbers are compared with
+    `json::number_float_t::operator==` which is `double::operator==` by
+    default. To compare floating-point while respecting an epsilon, an alternative
+    [comparison function](https://github.com/mariokonrad/marnav/blob/master/include/marnav/math/floatingpoint.hpp#L34-#L39)
+    could be used, for instance
+    @code {.cpp}
+    template<typename T, typename = typename std::enable_if<std::is_floating_point<T>::value, T>::type>
+    inline bool is_same(T a, T b, T epsilon = std::numeric_limits<T>::epsilon()) noexcept
+    {
+        return std::abs(a - b) <= epsilon;
+    }
+    @endcode
+    Or you can self-defined operator equal function like this:
+    @code {.cpp}
+    bool my_equal(const_reference lhs, const_reference rhs) {
+    const auto lhs_type lhs.type();
+    const auto rhs_type rhs.type();
+    if (lhs_type == rhs_type) {
+        switch(lhs_type)
+            // self_defined case
+            case value_t::number_float:
+                return std::abs(lhs - rhs) <= std::numeric_limits<float>::epsilon();
+            // other cases remain the same with the original
+            ...
+    }
+    ...
+    }
+    @endcode
+
+    @note NaN values never compare equal to themselves or to other NaN values.
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether the values @a lhs and @a rhs are equal
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @complexity Linear.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__equal}
+
+    @since version 1.0.0
+    */
+    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
+    {
+        const auto lhs_type = lhs.type();
+        const auto rhs_type = rhs.type();
+
+        if (lhs_type == rhs_type)
+        {
+            switch (lhs_type)
+            {
+                case value_t::array:
+                    return *lhs.m_value.array == *rhs.m_value.array;
+
+                case value_t::object:
+                    return *lhs.m_value.object == *rhs.m_value.object;
+
+                case value_t::null:
+                    return true;
+
+                case value_t::string:
+                    return *lhs.m_value.string == *rhs.m_value.string;
+
+                case value_t::boolean:
+                    return lhs.m_value.boolean == rhs.m_value.boolean;
+
+                case value_t::number_integer:
+                    return lhs.m_value.number_integer == rhs.m_value.number_integer;
+
+                case value_t::number_unsigned:
+                    return lhs.m_value.number_unsigned == rhs.m_value.number_unsigned;
+
+                case value_t::number_float:
+                    return lhs.m_value.number_float == rhs.m_value.number_float;
+
+                case value_t::binary:
+                    return *lhs.m_value.binary == *rhs.m_value.binary;
+
+                default:
+                    return false;
+            }
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_integer) == rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)
+        {
+            return lhs.m_value.number_float == static_cast<number_float_t>(rhs.m_value.number_integer);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_unsigned) == rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_float == static_cast<number_float_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)
+        {
+            return static_cast<number_integer_t>(lhs.m_value.number_unsigned) == rhs.m_value.number_integer;
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_integer == static_cast<number_integer_t>(rhs.m_value.number_unsigned);
+        }
+
+        return false;
+    }
+
+    /*!
+    @brief comparison: equal
+    @copydoc operator==(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs == basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: equal
+    @copydoc operator==(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) == rhs;
+    }
+
+    /*!
+    @brief comparison: not equal
+
+    Compares two JSON values for inequality by calculating `not (lhs == rhs)`.
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether the values @a lhs and @a rhs are not equal
+
+    @complexity Linear.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__notequal}
+
+    @since version 1.0.0
+    */
+    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs == rhs);
+    }
+
+    /*!
+    @brief comparison: not equal
+    @copydoc operator!=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs != basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: not equal
+    @copydoc operator!=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) != rhs;
+    }
+
+    /*!
+    @brief comparison: less than
+
+    Compares whether one JSON value @a lhs is less than another JSON value @a
+    rhs according to the following rules:
+    - If @a lhs and @a rhs have the same type, the values are compared using
+      the default `<` operator.
+    - Integer and floating-point numbers are automatically converted before
+      comparison
+    - In case @a lhs and @a rhs have different types, the values are ignored
+      and the order of the types is considered, see
+      @ref operator<(const value_t, const value_t).
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether @a lhs is less than @a rhs
+
+    @complexity Linear.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__less}
+
+    @since version 1.0.0
+    */
+    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
+    {
+        const auto lhs_type = lhs.type();
+        const auto rhs_type = rhs.type();
+
+        if (lhs_type == rhs_type)
+        {
+            switch (lhs_type)
+            {
+                case value_t::array:
+                    // note parentheses are necessary, see
+                    // https://github.com/nlohmann/json/issues/1530
+                    return (*lhs.m_value.array) < (*rhs.m_value.array);
+
+                case value_t::object:
+                    return (*lhs.m_value.object) < (*rhs.m_value.object);
+
+                case value_t::null:
+                    return false;
+
+                case value_t::string:
+                    return (*lhs.m_value.string) < (*rhs.m_value.string);
+
+                case value_t::boolean:
+                    return (lhs.m_value.boolean) < (rhs.m_value.boolean);
+
+                case value_t::number_integer:
+                    return (lhs.m_value.number_integer) < (rhs.m_value.number_integer);
+
+                case value_t::number_unsigned:
+                    return (lhs.m_value.number_unsigned) < (rhs.m_value.number_unsigned);
+
+                case value_t::number_float:
+                    return (lhs.m_value.number_float) < (rhs.m_value.number_float);
+
+                case value_t::binary:
+                    return (*lhs.m_value.binary) < (*rhs.m_value.binary);
+
+                default:
+                    return false;
+            }
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_integer) < rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)
+        {
+            return lhs.m_value.number_float < static_cast<number_float_t>(rhs.m_value.number_integer);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_unsigned) < rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_float < static_cast<number_float_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_integer < static_cast<number_integer_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)
+        {
+            return static_cast<number_integer_t>(lhs.m_value.number_unsigned) < rhs.m_value.number_integer;
+        }
+
+        // We only reach this line if we cannot compare values. In that case,
+        // we compare types. Note we have to call the operator explicitly,
+        // because MSVC has problems otherwise.
+        return operator<(lhs_type, rhs_type);
+    }
+
+    /*!
+    @brief comparison: less than
+    @copydoc operator<(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs < basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: less than
+    @copydoc operator<(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) < rhs;
+    }
+
+    /*!
+    @brief comparison: less than or equal
+
+    Compares whether one JSON value @a lhs is less than or equal to another
+    JSON value by calculating `not (rhs < lhs)`.
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether @a lhs is less than or equal to @a rhs
+
+    @complexity Linear.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__greater}
+
+    @since version 1.0.0
+    */
+    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(rhs < lhs);
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @copydoc operator<=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs <= basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @copydoc operator<=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) <= rhs;
+    }
+
+    /*!
+    @brief comparison: greater than
+
+    Compares whether one JSON value @a lhs is greater than another
+    JSON value by calculating `not (lhs <= rhs)`.
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether @a lhs is greater than to @a rhs
+
+    @complexity Linear.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__lessequal}
+
+    @since version 1.0.0
+    */
+    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs <= rhs);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @copydoc operator>(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs > basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @copydoc operator>(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) > rhs;
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+
+    Compares whether one JSON value @a lhs is greater than or equal to another
+    JSON value by calculating `not (lhs < rhs)`.
+
+    @param[in] lhs  first JSON value to consider
+    @param[in] rhs  second JSON value to consider
+    @return whether @a lhs is greater than or equal to @a rhs
+
+    @complexity Linear.
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @liveexample{The example demonstrates comparing several JSON
+    types.,operator__greaterequal}
+
+    @since version 1.0.0
+    */
+    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs < rhs);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @copydoc operator>=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const_reference lhs, const ScalarType rhs) noexcept
+    {
+        return lhs >= basic_json(rhs);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @copydoc operator>=(const_reference, const_reference)
+    */
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) >= rhs;
+    }
+
+    /// @}
+
+    ///////////////////
+    // serialization //
+    ///////////////////
+
+    /// @name serialization
+    /// @{
+
+    /*!
+    @brief serialize to stream
+
+    Serialize the given JSON value @a j to the output stream @a o. The JSON
+    value will be serialized using the @ref dump member function.
+
+    - The indentation of the output can be controlled with the member variable
+      `width` of the output stream @a o. For instance, using the manipulator
+      `std::setw(4)` on @a o sets the indentation level to `4` and the
+      serialization result is the same as calling `dump(4)`.
+
+    - The indentation character can be controlled with the member variable
+      `fill` of the output stream @a o. For instance, the manipulator
+      `std::setfill('\\t')` sets indentation to use a tab character rather than
+      the default space character.
+
+    @param[in,out] o  stream to serialize to
+    @param[in] j  JSON value to serialize
+
+    @return the stream @a o
+
+    @throw type_error.316 if a string stored inside the JSON value is not
+                          UTF-8 encoded
+
+    @complexity Linear.
+
+    @liveexample{The example below shows the serialization with different
+    parameters to `width` to adjust the indentation level.,operator_serialize}
+
+    @since version 1.0.0; indentation character added in version 3.0.0
+    */
+    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
+    {
+        // read width member and use it as indentation parameter if nonzero
+        const bool pretty_print = o.width() > 0;
+        const auto indentation = pretty_print ? o.width() : 0;
+
+        // reset width to 0 for subsequent calls to this stream
+        o.width(0);
+
+        // do the actual serialization
+        serializer s(detail::output_adapter<char>(o), o.fill());
+        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
+        return o;
+    }
+
+    /*!
+    @brief serialize to stream
+    @deprecated This stream operator is deprecated and will be removed in
+                future 4.0.0 of the library. Please use
+                @ref operator<<(std::ostream&, const basic_json&)
+                instead; that is, replace calls like `j >> o;` with `o << j;`.
+    @since version 1.0.0; deprecated since version 3.0.0
+    */
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
+    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
+    {
+        return o << j;
+    }
+
+    /// @}
+
+
+    /////////////////////
+    // deserialization //
+    /////////////////////
+
+    /// @name deserialization
+    /// @{
+
+    /*!
+    @brief deserialize from a compatible input
+
+    @tparam InputType A compatible input, for instance
+    - an std::istream object
+    - a FILE pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object obj for which begin(obj) and end(obj) produces a valid pair of
+      iterators.
+
+    @param[in] i  input to read from
+    @param[in] cb  a parser callback function of type @ref parser_callback_t
+    which is used to control the deserialization by filtering unwanted values
+    (optional)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+    @param[in] ignore_comments  whether comments should be ignored and treated
+    like whitespace (true) or yield a parse error (true); (optional, false by
+    default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.101 if a parse error occurs; example: `""unexpected end
+    of input; expected string literal""`
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+
+    @complexity Linear in the length of the input. The parser is a predictive
+    LL(1) parser. The complexity can be higher if the parser callback function
+    @a cb or reading from the input @a i has a super-linear complexity.
+
+    @note A UTF-8 byte order mark is silently ignored.
+
+    @liveexample{The example below demonstrates the `parse()` function reading
+    from an array.,parse__array__parser_callback_t}
+
+    @liveexample{The example below demonstrates the `parse()` function with
+    and without callback function.,parse__string__parser_callback_t}
+
+    @liveexample{The example below demonstrates the `parse()` function with
+    and without callback function.,parse__istream__parser_callback_t}
+
+    @liveexample{The example below demonstrates the `parse()` function reading
+    from a contiguous container.,parse__contiguouscontainer__parser_callback_t}
+
+    @since version 2.0.3 (contiguous containers); version 3.9.0 allowed to
+    ignore comments.
+    */
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(InputType&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::forward<InputType>(i)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /*!
+    @brief deserialize from a pair of character iterators
+
+    The value_type of the iterator must be a integral type with size of 1, 2 or
+    4 bytes, which will be interpreted respectively as UTF-8, UTF-16 and UTF-32.
+
+    @param[in] first iterator to start of character range
+    @param[in] last  iterator to end of character range
+    @param[in] cb  a parser callback function of type @ref parser_callback_t
+    which is used to control the deserialization by filtering unwanted values
+    (optional)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+    @param[in] ignore_comments  whether comments should be ignored and treated
+    like whitespace (true) or yield a parse error (true); (optional, false by
+    default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.101 if a parse error occurs; example: `""unexpected end
+    of input; expected string literal""`
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(IteratorType first,
+                            IteratorType last,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::move(first), std::move(last)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
+    static basic_json parse(detail::span_input_adapter&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(i.get(), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /*!
+    @brief check if the input is valid JSON
+
+    Unlike the @ref parse(InputType&&, const parser_callback_t,const bool)
+    function, this function neither throws an exception in case of invalid JSON
+    input (i.e., a parse error) nor creates diagnostic information.
+
+    @tparam InputType A compatible input, for instance
+    - an std::istream object
+    - a FILE pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object obj for which begin(obj) and end(obj) produces a valid pair of
+      iterators.
+
+    @param[in] i input to read from
+    @param[in] ignore_comments  whether comments should be ignored and treated
+    like whitespace (true) or yield a parse error (true); (optional, false by
+    default)
+
+    @return Whether the input read from @a i is valid JSON.
+
+    @complexity Linear in the length of the input. The parser is a predictive
+    LL(1) parser.
+
+    @note A UTF-8 byte order mark is silently ignored.
+
+    @liveexample{The example below demonstrates the `accept()` function reading
+    from a string.,accept__string}
+    */
+    template<typename InputType>
+    static bool accept(InputType&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    template<typename IteratorType>
+    static bool accept(IteratorType first, IteratorType last,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
+    static bool accept(detail::span_input_adapter&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /*!
+    @brief generate SAX events
+
+    The SAX event lister must follow the interface of @ref json_sax.
+
+    This function reads from a compatible input. Examples are:
+    - an std::istream object
+    - a FILE pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object obj for which begin(obj) and end(obj) produces a valid pair of
+      iterators.
+
+    @param[in] i  input to read from
+    @param[in,out] sax  SAX event listener
+    @param[in] format  the format to parse (JSON, CBOR, MessagePack, or UBJSON)
+    @param[in] strict  whether the input has to be consumed completely
+    @param[in] ignore_comments  whether comments should be ignored and treated
+    like whitespace (true) or yield a parse error (true); (optional, false by
+    default); only applies to the JSON file format.
+
+    @return return value of the last processed SAX event
+
+    @throw parse_error.101 if a parse error occurs; example: `""unexpected end
+    of input; expected string literal""`
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+
+    @complexity Linear in the length of the input. The parser is a predictive
+    LL(1) parser. The complexity can be higher if the SAX consumer @a sax has
+    a super-linear complexity.
+
+    @note A UTF-8 byte order mark is silently ignored.
+
+    @liveexample{The example below demonstrates the `sax_parse()` function
+    reading from string and processing the events with a user-defined SAX
+    event consumer.,sax_parse}
+
+    @since version 3.2.0
+    */
+    template <typename InputType, typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(InputType&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+
+    template<class IteratorType, class SAX>
+    JSON_HEDLEY_NON_NULL(3)
+    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+
+    template <typename SAX>
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = i.get();
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+
+    /*!
+    @brief deserialize from stream
+    @deprecated This stream operator is deprecated and will be removed in
+                version 4.0.0 of the library. Please use
+                @ref operator>>(std::istream&, basic_json&)
+                instead; that is, replace calls like `j << i;` with `i >> j;`.
+    @since version 1.0.0; deprecated since version 3.0.0
+    */
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
+    friend std::istream& operator<<(basic_json& j, std::istream& i)
+    {
+        return operator>>(i, j);
+    }
+
+    /*!
+    @brief deserialize from stream
+
+    Deserializes an input stream to a JSON value.
+
+    @param[in,out] i  input stream to read a serialized JSON value from
+    @param[in,out] j  JSON value to write the deserialized input to
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+
+    @complexity Linear in the length of the input. The parser is a predictive
+    LL(1) parser.
+
+    @note A UTF-8 byte order mark is silently ignored.
+
+    @liveexample{The example below shows how a JSON value is constructed by
+    reading a serialization from a stream.,operator_deserialize}
+
+    @sa parse(std::istream&, const parser_callback_t) for a variant with a
+    parser callback function to filter values while parsing
+
+    @since version 1.0.0
+    */
+    friend std::istream& operator>>(std::istream& i, basic_json& j)
+    {
+        parser(detail::input_adapter(i)).parse(false, j);
+        return i;
+    }
+
+    /// @}
+
+    ///////////////////////////
+    // convenience functions //
+    ///////////////////////////
+
+    /*!
+    @brief return the type as string
+
+    Returns the type name as string to be used in error messages - usually to
+    indicate that a function was called on a wrong JSON type.
+
+    @return a string representation of a the @a m_type member:
+            Value type  | return value
+            ----------- | -------------
+            null        | `"null"`
+            boolean     | `"boolean"`
+            string      | `"string"`
+            number      | `"number"` (for all number types)
+            object      | `"object"`
+            array       | `"array"`
+            binary      | `"binary"`
+            discarded   | `"discarded"`
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+
+    @complexity Constant.
+
+    @liveexample{The following code exemplifies `type_name()` for all JSON
+    types.,type_name}
+
+    @sa @ref type() -- return the type of the JSON value
+    @sa @ref operator value_t() -- return the type of the JSON value (implicit)
+
+    @since version 1.0.0, public since 2.1.0, `const char*` and `noexcept`
+    since 3.0.0
+    */
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* type_name() const noexcept
+    {
+        {
+            switch (m_type)
+            {
+                case value_t::null:
+                    return "null";
+                case value_t::object:
+                    return "object";
+                case value_t::array:
+                    return "array";
+                case value_t::string:
+                    return "string";
+                case value_t::boolean:
+                    return "boolean";
+                case value_t::binary:
+                    return "binary";
+                case value_t::discarded:
+                    return "discarded";
+                default:
+                    return "number";
+            }
+        }
+    }
+
+
+  private:
+    //////////////////////
+    // member variables //
+    //////////////////////
+
+    /// the type of the current element
+    value_t m_type = value_t::null;
+
+    /// the value of the current element
+    json_value m_value = {};
+
+    //////////////////////////////////////////
+    // binary serialization/deserialization //
+    //////////////////////////////////////////
+
+    /// @name binary serialization/deserialization support
+    /// @{
+
+  public:
+    /*!
+    @brief create a CBOR serialization of a given JSON value
+
+    Serializes a given JSON value @a j to a byte vector using the CBOR (Concise
+    Binary Object Representation) serialization format. CBOR is a binary
+    serialization format which aims to be more compact than JSON itself, yet
+    more efficient to parse.
+
+    The library uses the following mapping from JSON values types to
+    CBOR types according to the CBOR specification (RFC 7049):
+
+    JSON value type | value/range                                | CBOR type                          | first byte
+    --------------- | ------------------------------------------ | ---------------------------------- | ---------------
+    null            | `null`                                     | Null                               | 0xF6
+    boolean         | `true`                                     | True                               | 0xF5
+    boolean         | `false`                                    | False                              | 0xF4
+    number_integer  | -9223372036854775808..-2147483649          | Negative integer (8 bytes follow)  | 0x3B
+    number_integer  | -2147483648..-32769                        | Negative integer (4 bytes follow)  | 0x3A
+    number_integer  | -32768..-129                               | Negative integer (2 bytes follow)  | 0x39
+    number_integer  | -128..-25                                  | Negative integer (1 byte follow)   | 0x38
+    number_integer  | -24..-1                                    | Negative integer                   | 0x20..0x37
+    number_integer  | 0..23                                      | Integer                            | 0x00..0x17
+    number_integer  | 24..255                                    | Unsigned integer (1 byte follow)   | 0x18
+    number_integer  | 256..65535                                 | Unsigned integer (2 bytes follow)  | 0x19
+    number_integer  | 65536..4294967295                          | Unsigned integer (4 bytes follow)  | 0x1A
+    number_integer  | 4294967296..18446744073709551615           | Unsigned integer (8 bytes follow)  | 0x1B
+    number_unsigned | 0..23                                      | Integer                            | 0x00..0x17
+    number_unsigned | 24..255                                    | Unsigned integer (1 byte follow)   | 0x18
+    number_unsigned | 256..65535                                 | Unsigned integer (2 bytes follow)  | 0x19
+    number_unsigned | 65536..4294967295                          | Unsigned integer (4 bytes follow)  | 0x1A
+    number_unsigned | 4294967296..18446744073709551615           | Unsigned integer (8 bytes follow)  | 0x1B
+    number_float    | *any value representable by a float*       | Single-Precision Float             | 0xFA
+    number_float    | *any value NOT representable by a float*   | Double-Precision Float             | 0xFB
+    string          | *length*: 0..23                            | UTF-8 string                       | 0x60..0x77
+    string          | *length*: 23..255                          | UTF-8 string (1 byte follow)       | 0x78
+    string          | *length*: 256..65535                       | UTF-8 string (2 bytes follow)      | 0x79
+    string          | *length*: 65536..4294967295                | UTF-8 string (4 bytes follow)      | 0x7A
+    string          | *length*: 4294967296..18446744073709551615 | UTF-8 string (8 bytes follow)      | 0x7B
+    array           | *size*: 0..23                              | array                              | 0x80..0x97
+    array           | *size*: 23..255                            | array (1 byte follow)              | 0x98
+    array           | *size*: 256..65535                         | array (2 bytes follow)             | 0x99
+    array           | *size*: 65536..4294967295                  | array (4 bytes follow)             | 0x9A
+    array           | *size*: 4294967296..18446744073709551615   | array (8 bytes follow)             | 0x9B
+    object          | *size*: 0..23                              | map                                | 0xA0..0xB7
+    object          | *size*: 23..255                            | map (1 byte follow)                | 0xB8
+    object          | *size*: 256..65535                         | map (2 bytes follow)               | 0xB9
+    object          | *size*: 65536..4294967295                  | map (4 bytes follow)               | 0xBA
+    object          | *size*: 4294967296..18446744073709551615   | map (8 bytes follow)               | 0xBB
+    binary          | *size*: 0..23                              | byte string                        | 0x40..0x57
+    binary          | *size*: 23..255                            | byte string (1 byte follow)        | 0x58
+    binary          | *size*: 256..65535                         | byte string (2 bytes follow)       | 0x59
+    binary          | *size*: 65536..4294967295                  | byte string (4 bytes follow)       | 0x5A
+    binary          | *size*: 4294967296..18446744073709551615   | byte string (8 bytes follow)       | 0x5B
+
+    @note The mapping is **complete** in the sense that any JSON value type
+          can be converted to a CBOR value.
+
+    @note If NaN or Infinity are stored inside a JSON number, they are
+          serialized properly. This behavior differs from the @ref dump()
+          function which serializes NaN or Infinity to `null`.
+
+    @note The following CBOR types are not used in the conversion:
+          - UTF-8 strings terminated by "break" (0x7F)
+          - arrays terminated by "break" (0x9F)
+          - maps terminated by "break" (0xBF)
+          - byte strings terminated by "break" (0x5F)
+          - date/time (0xC0..0xC1)
+          - bignum (0xC2..0xC3)
+          - decimal fraction (0xC4)
+          - bigfloat (0xC5)
+          - expected conversions (0xD5..0xD7)
+          - simple values (0xE0..0xF3, 0xF8)
+          - undefined (0xF7)
+          - half-precision floats (0xF9)
+          - break (0xFF)
+
+    @param[in] j  JSON value to serialize
+    @return CBOR serialization as byte vector
+
+    @complexity Linear in the size of the JSON value @a j.
+
+    @liveexample{The example shows the serialization of a JSON value to a byte
+    vector in CBOR format.,to_cbor}
+
+    @sa http://cbor.io
+    @sa @ref from_cbor(detail::input_adapter&&, const bool, const bool, const cbor_tag_handler_t) for the
+        analogous deserialization
+    @sa @ref to_msgpack(const basic_json&) for the related MessagePack format
+    @sa @ref to_ubjson(const basic_json&, const bool, const bool) for the
+             related UBJSON format
+
+    @since version 2.0.9; compact representation of floating-point numbers
+           since version 3.8.0
+    */
+    static std::vector<uint8_t> to_cbor(const basic_json& j)
+    {
+        std::vector<uint8_t> result;
+        to_cbor(j, result);
+        return result;
+    }
+
+    static void to_cbor(const basic_json& j, detail::output_adapter<uint8_t> o)
+    {
+        binary_writer<uint8_t>(o).write_cbor(j);
+    }
+
+    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_cbor(j);
+    }
+
+    /*!
+    @brief create a MessagePack serialization of a given JSON value
+
+    Serializes a given JSON value @a j to a byte vector using the MessagePack
+    serialization format. MessagePack is a binary serialization format which
+    aims to be more compact than JSON itself, yet more efficient to parse.
+
+    The library uses the following mapping from JSON values types to
+    MessagePack types according to the MessagePack specification:
+
+    JSON value type | value/range                       | MessagePack type | first byte
+    --------------- | --------------------------------- | ---------------- | ----------
+    null            | `null`                            | nil              | 0xC0
+    boolean         | `true`                            | true             | 0xC3
+    boolean         | `false`                           | false            | 0xC2
+    number_integer  | -9223372036854775808..-2147483649 | int64            | 0xD3
+    number_integer  | -2147483648..-32769               | int32            | 0xD2
+    number_integer  | -32768..-129                      | int16            | 0xD1
+    number_integer  | -128..-33                         | int8             | 0xD0
+    number_integer  | -32..-1                           | negative fixint  | 0xE0..0xFF
+    number_integer  | 0..127                            | positive fixint  | 0x00..0x7F
+    number_integer  | 128..255                          | uint 8           | 0xCC
+    number_integer  | 256..65535                        | uint 16          | 0xCD
+    number_integer  | 65536..4294967295                 | uint 32          | 0xCE
+    number_integer  | 4294967296..18446744073709551615  | uint 64          | 0xCF
+    number_unsigned | 0..127                            | positive fixint  | 0x00..0x7F
+    number_unsigned | 128..255                          | uint 8           | 0xCC
+    number_unsigned | 256..65535                        | uint 16          | 0xCD
+    number_unsigned | 65536..4294967295                 | uint 32          | 0xCE
+    number_unsigned | 4294967296..18446744073709551615  | uint 64          | 0xCF
+    number_float    | *any value representable by a float*     | float 32 | 0xCA
+    number_float    | *any value NOT representable by a float* | float 64 | 0xCB
+    string          | *length*: 0..31                   | fixstr           | 0xA0..0xBF
+    string          | *length*: 32..255                 | str 8            | 0xD9
+    string          | *length*: 256..65535              | str 16           | 0xDA
+    string          | *length*: 65536..4294967295       | str 32           | 0xDB
+    array           | *size*: 0..15                     | fixarray         | 0x90..0x9F
+    array           | *size*: 16..65535                 | array 16         | 0xDC
+    array           | *size*: 65536..4294967295         | array 32         | 0xDD
+    object          | *size*: 0..15                     | fix map          | 0x80..0x8F
+    object          | *size*: 16..65535                 | map 16           | 0xDE
+    object          | *size*: 65536..4294967295         | map 32           | 0xDF
+    binary          | *size*: 0..255                    | bin 8            | 0xC4
+    binary          | *size*: 256..65535                | bin 16           | 0xC5
+    binary          | *size*: 65536..4294967295         | bin 32           | 0xC6
+
+    @note The mapping is **complete** in the sense that any JSON value type
+          can be converted to a MessagePack value.
+
+    @note The following values can **not** be converted to a MessagePack value:
+          - strings with more than 4294967295 bytes
+          - byte strings with more than 4294967295 bytes
+          - arrays with more than 4294967295 elements
+          - objects with more than 4294967295 elements
+
+    @note Any MessagePack output created @ref to_msgpack can be successfully
+          parsed by @ref from_msgpack.
+
+    @note If NaN or Infinity are stored inside a JSON number, they are
+          serialized properly. This behavior differs from the @ref dump()
+          function which serializes NaN or Infinity to `null`.
+
+    @param[in] j  JSON value to serialize
+    @return MessagePack serialization as byte vector
+
+    @complexity Linear in the size of the JSON value @a j.
+
+    @liveexample{The example shows the serialization of a JSON value to a byte
+    vector in MessagePack format.,to_msgpack}
+
+    @sa http://msgpack.org
+    @sa @ref from_msgpack for the analogous deserialization
+    @sa @ref to_cbor(const basic_json& for the related CBOR format
+    @sa @ref to_ubjson(const basic_json&, const bool, const bool) for the
+             related UBJSON format
+
+    @since version 2.0.9
+    */
+    static std::vector<uint8_t> to_msgpack(const basic_json& j)
+    {
+        std::vector<uint8_t> result;
+        to_msgpack(j, result);
+        return result;
+    }
+
+    static void to_msgpack(const basic_json& j, detail::output_adapter<uint8_t> o)
+    {
+        binary_writer<uint8_t>(o).write_msgpack(j);
+    }
+
+    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_msgpack(j);
+    }
+
+    /*!
+    @brief create a UBJSON serialization of a given JSON value
+
+    Serializes a given JSON value @a j to a byte vector using the UBJSON
+    (Universal Binary JSON) serialization format. UBJSON aims to be more compact
+    than JSON itself, yet more efficient to parse.
+
+    The library uses the following mapping from JSON values types to
+    UBJSON types according to the UBJSON specification:
+
+    JSON value type | value/range                       | UBJSON type | marker
+    --------------- | --------------------------------- | ----------- | ------
+    null            | `null`                            | null        | `Z`
+    boolean         | `true`                            | true        | `T`
+    boolean         | `false`                           | false       | `F`
+    number_integer  | -9223372036854775808..-2147483649 | int64       | `L`
+    number_integer  | -2147483648..-32769               | int32       | `l`
+    number_integer  | -32768..-129                      | int16       | `I`
+    number_integer  | -128..127                         | int8        | `i`
+    number_integer  | 128..255                          | uint8       | `U`
+    number_integer  | 256..32767                        | int16       | `I`
+    number_integer  | 32768..2147483647                 | int32       | `l`
+    number_integer  | 2147483648..9223372036854775807   | int64       | `L`
+    number_unsigned | 0..127                            | int8        | `i`
+    number_unsigned | 128..255                          | uint8       | `U`
+    number_unsigned | 256..32767                        | int16       | `I`
+    number_unsigned | 32768..2147483647                 | int32       | `l`
+    number_unsigned | 2147483648..9223372036854775807   | int64       | `L`
+    number_unsigned | 2147483649..18446744073709551615  | high-precision | `H`
+    number_float    | *any value*                       | float64     | `D`
+    string          | *with shortest length indicator*  | string      | `S`
+    array           | *see notes on optimized format*   | array       | `[`
+    object          | *see notes on optimized format*   | map         | `{`
+
+    @note The mapping is **complete** in the sense that any JSON value type
+          can be converted to a UBJSON value.
+
+    @note The following values can **not** be converted to a UBJSON value:
+          - strings with more than 9223372036854775807 bytes (theoretical)
+
+    @note The following markers are not used in the conversion:
+          - `Z`: no-op values are not created.
+          - `C`: single-byte strings are serialized with `S` markers.
+
+    @note Any UBJSON output created @ref to_ubjson can be successfully parsed
+          by @ref from_ubjson.
+
+    @note If NaN or Infinity are stored inside a JSON number, they are
+          serialized properly. This behavior differs from the @ref dump()
+          function which serializes NaN or Infinity to `null`.
+
+    @note The optimized formats for containers are supported: Parameter
+          @a use_size adds size information to the beginning of a container and
+          removes the closing marker. Parameter @a use_type further checks
+          whether all elements of a container have the same type and adds the
+          type marker to the beginning of the container. The @a use_type
+          parameter must only be used together with @a use_size = true. Note
+          that @a use_size = true alone may result in larger representations -
+          the benefit of this parameter is that the receiving side is
+          immediately informed on the number of elements of the container.
+
+    @note If the JSON data contains the binary type, the value stored is a list
+          of integers, as suggested by the UBJSON documentation.  In particular,
+          this means that serialization and the deserialization of a JSON
+          containing binary values into UBJSON and back will result in a
+          different JSON object.
+
+    @param[in] j  JSON value to serialize
+    @param[in] use_size  whether to add size annotations to container types
+    @param[in] use_type  whether to add type annotations to container types
+                         (must be combined with @a use_size = true)
+    @return UBJSON serialization as byte vector
+
+    @complexity Linear in the size of the JSON value @a j.
+
+    @liveexample{The example shows the serialization of a JSON value to a byte
+    vector in UBJSON format.,to_ubjson}
+
+    @sa http://ubjson.org
+    @sa @ref from_ubjson(detail::input_adapter&&, const bool, const bool) for the
+        analogous deserialization
+    @sa @ref to_cbor(const basic_json& for the related CBOR format
+    @sa @ref to_msgpack(const basic_json&) for the related MessagePack format
+
+    @since version 3.1.0
+    */
+    static std::vector<uint8_t> to_ubjson(const basic_json& j,
+                                          const bool use_size = false,
+                                          const bool use_type = false)
+    {
+        std::vector<uint8_t> result;
+        to_ubjson(j, result, use_size, use_type);
+        return result;
+    }
+
+    static void to_ubjson(const basic_json& j, detail::output_adapter<uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<uint8_t>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
+    }
+
+
+    /*!
+    @brief Serializes the given JSON object `j` to BSON and returns a vector
+           containing the corresponding BSON-representation.
+
+    BSON (Binary JSON) is a binary format in which zero or more ordered key/value pairs are
+    stored as a single entity (a so-called document).
+
+    The library uses the following mapping from JSON values types to BSON types:
+
+    JSON value type | value/range                       | BSON type   | marker
+    --------------- | --------------------------------- | ----------- | ------
+    null            | `null`                            | null        | 0x0A
+    boolean         | `true`, `false`                   | boolean     | 0x08
+    number_integer  | -9223372036854775808..-2147483649 | int64       | 0x12
+    number_integer  | -2147483648..2147483647           | int32       | 0x10
+    number_integer  | 2147483648..9223372036854775807   | int64       | 0x12
+    number_unsigned | 0..2147483647                     | int32       | 0x10
+    number_unsigned | 2147483648..9223372036854775807   | int64       | 0x12
+    number_unsigned | 9223372036854775808..18446744073709551615| --   | --
+    number_float    | *any value*                       | double      | 0x01
+    string          | *any value*                       | string      | 0x02
+    array           | *any value*                       | document    | 0x04
+    object          | *any value*                       | document    | 0x03
+    binary          | *any value*                       | binary      | 0x05
+
+    @warning The mapping is **incomplete**, since only JSON-objects (and things
+    contained therein) can be serialized to BSON.
+    Also, integers larger than 9223372036854775807 cannot be serialized to BSON,
+    and the keys may not contain U+0000, since they are serialized a
+    zero-terminated c-strings.
+
+    @throw out_of_range.407  if `j.is_number_unsigned() && j.get<std::uint64_t>() > 9223372036854775807`
+    @throw out_of_range.409  if a key in `j` contains a NULL (U+0000)
+    @throw type_error.317    if `!j.is_object()`
+
+    @pre The input `j` is required to be an object: `j.is_object() == true`.
+
+    @note Any BSON output created via @ref to_bson can be successfully parsed
+          by @ref from_bson.
+
+    @param[in] j  JSON value to serialize
+    @return BSON serialization as byte vector
+
+    @complexity Linear in the size of the JSON value @a j.
+
+    @liveexample{The example shows the serialization of a JSON value to a byte
+    vector in BSON format.,to_bson}
+
+    @sa http://bsonspec.org/spec.html
+    @sa @ref from_bson(detail::input_adapter&&, const bool strict) for the
+        analogous deserialization
+    @sa @ref to_ubjson(const basic_json&, const bool, const bool) for the
+             related UBJSON format
+    @sa @ref to_cbor(const basic_json&) for the related CBOR format
+    @sa @ref to_msgpack(const basic_json&) for the related MessagePack format
+    */
+    static std::vector<uint8_t> to_bson(const basic_json& j)
+    {
+        std::vector<uint8_t> result;
+        to_bson(j, result);
+        return result;
+    }
+
+    /*!
+    @brief Serializes the given JSON object `j` to BSON and forwards the
+           corresponding BSON-representation to the given output_adapter `o`.
+    @param j The JSON object to convert to BSON.
+    @param o The output adapter that receives the binary BSON representation.
+    @pre The input `j` shall be an object: `j.is_object() == true`
+    @sa @ref to_bson(const basic_json&)
+    */
+    static void to_bson(const basic_json& j, detail::output_adapter<uint8_t> o)
+    {
+        binary_writer<uint8_t>(o).write_bson(j);
+    }
+
+    /*!
+    @copydoc to_bson(const basic_json&, detail::output_adapter<uint8_t>)
+    */
+    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_bson(j);
+    }
+
+
+    /*!
+    @brief create a JSON value from an input in CBOR format
+
+    Deserializes a given input @a i to a JSON value using the CBOR (Concise
+    Binary Object Representation) serialization format.
+
+    The library maps CBOR types to JSON value types as follows:
+
+    CBOR type              | JSON value type | first byte
+    ---------------------- | --------------- | ----------
+    Integer                | number_unsigned | 0x00..0x17
+    Unsigned integer       | number_unsigned | 0x18
+    Unsigned integer       | number_unsigned | 0x19
+    Unsigned integer       | number_unsigned | 0x1A
+    Unsigned integer       | number_unsigned | 0x1B
+    Negative integer       | number_integer  | 0x20..0x37
+    Negative integer       | number_integer  | 0x38
+    Negative integer       | number_integer  | 0x39
+    Negative integer       | number_integer  | 0x3A
+    Negative integer       | number_integer  | 0x3B
+    Byte string            | binary          | 0x40..0x57
+    Byte string            | binary          | 0x58
+    Byte string            | binary          | 0x59
+    Byte string            | binary          | 0x5A
+    Byte string            | binary          | 0x5B
+    UTF-8 string           | string          | 0x60..0x77
+    UTF-8 string           | string          | 0x78
+    UTF-8 string           | string          | 0x79
+    UTF-8 string           | string          | 0x7A
+    UTF-8 string           | string          | 0x7B
+    UTF-8 string           | string          | 0x7F
+    array                  | array           | 0x80..0x97
+    array                  | array           | 0x98
+    array                  | array           | 0x99
+    array                  | array           | 0x9A
+    array                  | array           | 0x9B
+    array                  | array           | 0x9F
+    map                    | object          | 0xA0..0xB7
+    map                    | object          | 0xB8
+    map                    | object          | 0xB9
+    map                    | object          | 0xBA
+    map                    | object          | 0xBB
+    map                    | object          | 0xBF
+    False                  | `false`         | 0xF4
+    True                   | `true`          | 0xF5
+    Null                   | `null`          | 0xF6
+    Half-Precision Float   | number_float    | 0xF9
+    Single-Precision Float | number_float    | 0xFA
+    Double-Precision Float | number_float    | 0xFB
+
+    @warning The mapping is **incomplete** in the sense that not all CBOR
+             types can be converted to a JSON value. The following CBOR types
+             are not supported and will yield parse errors (parse_error.112):
+             - date/time (0xC0..0xC1)
+             - bignum (0xC2..0xC3)
+             - decimal fraction (0xC4)
+             - bigfloat (0xC5)
+             - expected conversions (0xD5..0xD7)
+             - simple values (0xE0..0xF3, 0xF8)
+             - undefined (0xF7)
+
+    @warning CBOR allows map keys of any type, whereas JSON only allows
+             strings as keys in object values. Therefore, CBOR maps with keys
+             other than UTF-8 strings are rejected (parse_error.113).
+
+    @note Any CBOR output created @ref to_cbor can be successfully parsed by
+          @ref from_cbor.
+
+    @param[in] i  an input in CBOR format convertible to an input adapter
+    @param[in] strict  whether to expect the input to be consumed until EOF
+                       (true by default)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+    @param[in] tag_handler how to treat CBOR tags (optional, error by default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.110 if the given input ends prematurely or the end of
+    file was not reached when @a strict was set to true
+    @throw parse_error.112 if unsupported features from CBOR were
+    used in the given input @a v or if the input is not valid CBOR
+    @throw parse_error.113 if a string was expected as map key, but not found
+
+    @complexity Linear in the size of the input @a i.
+
+    @liveexample{The example shows the deserialization of a byte vector in CBOR
+    format to a JSON value.,from_cbor}
+
+    @sa http://cbor.io
+    @sa @ref to_cbor(const basic_json&) for the analogous serialization
+    @sa @ref from_msgpack(detail::input_adapter&&, const bool, const bool) for the
+        related MessagePack format
+    @sa @ref from_ubjson(detail::input_adapter&&, const bool, const bool) for the
+        related UBJSON format
+
+    @since version 2.0.9; parameter @a start_index since 2.1.1; changed to
+           consume input adapters, removed start_index parameter, and added
+           @a strict parameter since 3.0.0; added @a allow_exceptions parameter
+           since 3.2.0; added @a tag_handler parameter since 3.9.0.
+    */
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /*!
+    @copydoc from_cbor(detail::input_adapter&&, const bool, const bool, const cbor_tag_handler_t)
+    */
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
+    }
+
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /*!
+    @brief create a JSON value from an input in MessagePack format
+
+    Deserializes a given input @a i to a JSON value using the MessagePack
+    serialization format.
+
+    The library maps MessagePack types to JSON value types as follows:
+
+    MessagePack type | JSON value type | first byte
+    ---------------- | --------------- | ----------
+    positive fixint  | number_unsigned | 0x00..0x7F
+    fixmap           | object          | 0x80..0x8F
+    fixarray         | array           | 0x90..0x9F
+    fixstr           | string          | 0xA0..0xBF
+    nil              | `null`          | 0xC0
+    false            | `false`         | 0xC2
+    true             | `true`          | 0xC3
+    float 32         | number_float    | 0xCA
+    float 64         | number_float    | 0xCB
+    uint 8           | number_unsigned | 0xCC
+    uint 16          | number_unsigned | 0xCD
+    uint 32          | number_unsigned | 0xCE
+    uint 64          | number_unsigned | 0xCF
+    int 8            | number_integer  | 0xD0
+    int 16           | number_integer  | 0xD1
+    int 32           | number_integer  | 0xD2
+    int 64           | number_integer  | 0xD3
+    str 8            | string          | 0xD9
+    str 16           | string          | 0xDA
+    str 32           | string          | 0xDB
+    array 16         | array           | 0xDC
+    array 32         | array           | 0xDD
+    map 16           | object          | 0xDE
+    map 32           | object          | 0xDF
+    bin 8            | binary          | 0xC4
+    bin 16           | binary          | 0xC5
+    bin 32           | binary          | 0xC6
+    ext 8            | binary          | 0xC7
+    ext 16           | binary          | 0xC8
+    ext 32           | binary          | 0xC9
+    fixext 1         | binary          | 0xD4
+    fixext 2         | binary          | 0xD5
+    fixext 4         | binary          | 0xD6
+    fixext 8         | binary          | 0xD7
+    fixext 16        | binary          | 0xD8
+    negative fixint  | number_integer  | 0xE0-0xFF
+
+    @note Any MessagePack output created @ref to_msgpack can be successfully
+          parsed by @ref from_msgpack.
+
+    @param[in] i  an input in MessagePack format convertible to an input
+                  adapter
+    @param[in] strict  whether to expect the input to be consumed until EOF
+                       (true by default)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.110 if the given input ends prematurely or the end of
+    file was not reached when @a strict was set to true
+    @throw parse_error.112 if unsupported features from MessagePack were
+    used in the given input @a i or if the input is not valid MessagePack
+    @throw parse_error.113 if a string was expected as map key, but not found
+
+    @complexity Linear in the size of the input @a i.
+
+    @liveexample{The example shows the deserialization of a byte vector in
+    MessagePack format to a JSON value.,from_msgpack}
+
+    @sa http://msgpack.org
+    @sa @ref to_msgpack(const basic_json&) for the analogous serialization
+    @sa @ref from_cbor(detail::input_adapter&&, const bool, const bool, const cbor_tag_handler_t) for the
+        related CBOR format
+    @sa @ref from_ubjson(detail::input_adapter&&, const bool, const bool) for
+        the related UBJSON format
+    @sa @ref from_bson(detail::input_adapter&&, const bool, const bool) for
+        the related BSON format
+
+    @since version 2.0.9; parameter @a start_index since 2.1.1; changed to
+           consume input adapters, removed start_index parameter, and added
+           @a strict parameter since 3.0.0; added @a allow_exceptions parameter
+           since 3.2.0
+    */
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(InputType&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /*!
+    @copydoc from_msgpack(detail::input_adapter&&, const bool, const bool)
+    */
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(IteratorType first, IteratorType last,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(const T* ptr, std::size_t len,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(detail::span_input_adapter&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+
+    /*!
+    @brief create a JSON value from an input in UBJSON format
+
+    Deserializes a given input @a i to a JSON value using the UBJSON (Universal
+    Binary JSON) serialization format.
+
+    The library maps UBJSON types to JSON value types as follows:
+
+    UBJSON type | JSON value type                         | marker
+    ----------- | --------------------------------------- | ------
+    no-op       | *no value, next value is read*          | `N`
+    null        | `null`                                  | `Z`
+    false       | `false`                                 | `F`
+    true        | `true`                                  | `T`
+    float32     | number_float                            | `d`
+    float64     | number_float                            | `D`
+    uint8       | number_unsigned                         | `U`
+    int8        | number_integer                          | `i`
+    int16       | number_integer                          | `I`
+    int32       | number_integer                          | `l`
+    int64       | number_integer                          | `L`
+    high-precision number | number_integer, number_unsigned, or number_float - depends on number string | 'H'
+    string      | string                                  | `S`
+    char        | string                                  | `C`
+    array       | array (optimized values are supported)  | `[`
+    object      | object (optimized values are supported) | `{`
+
+    @note The mapping is **complete** in the sense that any UBJSON value can
+          be converted to a JSON value.
+
+    @param[in] i  an input in UBJSON format convertible to an input adapter
+    @param[in] strict  whether to expect the input to be consumed until EOF
+                       (true by default)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.110 if the given input ends prematurely or the end of
+    file was not reached when @a strict was set to true
+    @throw parse_error.112 if a parse error occurs
+    @throw parse_error.113 if a string could not be parsed successfully
+
+    @complexity Linear in the size of the input @a i.
+
+    @liveexample{The example shows the deserialization of a byte vector in
+    UBJSON format to a JSON value.,from_ubjson}
+
+    @sa http://ubjson.org
+    @sa @ref to_ubjson(const basic_json&, const bool, const bool) for the
+             analogous serialization
+    @sa @ref from_cbor(detail::input_adapter&&, const bool, const bool, const cbor_tag_handler_t) for the
+        related CBOR format
+    @sa @ref from_msgpack(detail::input_adapter&&, const bool, const bool) for
+        the related MessagePack format
+    @sa @ref from_bson(detail::input_adapter&&, const bool, const bool) for
+        the related BSON format
+
+    @since version 3.1.0; added @a allow_exceptions parameter since 3.2.0
+    */
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /*!
+    @copydoc from_ubjson(detail::input_adapter&&, const bool, const bool)
+    */
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(const T* ptr, std::size_t len,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(detail::span_input_adapter&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+
+    /*!
+    @brief Create a JSON value from an input in BSON format
+
+    Deserializes a given input @a i to a JSON value using the BSON (Binary JSON)
+    serialization format.
+
+    The library maps BSON record types to JSON value types as follows:
+
+    BSON type       | BSON marker byte | JSON value type
+    --------------- | ---------------- | ---------------------------
+    double          | 0x01             | number_float
+    string          | 0x02             | string
+    document        | 0x03             | object
+    array           | 0x04             | array
+    binary          | 0x05             | still unsupported
+    undefined       | 0x06             | still unsupported
+    ObjectId        | 0x07             | still unsupported
+    boolean         | 0x08             | boolean
+    UTC Date-Time   | 0x09             | still unsupported
+    null            | 0x0A             | null
+    Regular Expr.   | 0x0B             | still unsupported
+    DB Pointer      | 0x0C             | still unsupported
+    JavaScript Code | 0x0D             | still unsupported
+    Symbol          | 0x0E             | still unsupported
+    JavaScript Code | 0x0F             | still unsupported
+    int32           | 0x10             | number_integer
+    Timestamp       | 0x11             | still unsupported
+    128-bit decimal float | 0x13       | still unsupported
+    Max Key         | 0x7F             | still unsupported
+    Min Key         | 0xFF             | still unsupported
+
+    @warning The mapping is **incomplete**. The unsupported mappings
+             are indicated in the table above.
+
+    @param[in] i  an input in BSON format convertible to an input adapter
+    @param[in] strict  whether to expect the input to be consumed until EOF
+                       (true by default)
+    @param[in] allow_exceptions  whether to throw exceptions in case of a
+    parse error (optional, true by default)
+
+    @return deserialized JSON value; in case of a parse error and
+            @a allow_exceptions set to `false`, the return value will be
+            value_t::discarded.
+
+    @throw parse_error.114 if an unsupported BSON record type is encountered
+
+    @complexity Linear in the size of the input @a i.
+
+    @liveexample{The example shows the deserialization of a byte vector in
+    BSON format to a JSON value.,from_bson}
+
+    @sa http://bsonspec.org/spec.html
+    @sa @ref to_bson(const basic_json&) for the analogous serialization
+    @sa @ref from_cbor(detail::input_adapter&&, const bool, const bool, const cbor_tag_handler_t) for the
+        related CBOR format
+    @sa @ref from_msgpack(detail::input_adapter&&, const bool, const bool) for
+        the related MessagePack format
+    @sa @ref from_ubjson(detail::input_adapter&&, const bool, const bool) for the
+        related UBJSON format
+    */
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /*!
+    @copydoc from_bson(detail::input_adapter&&, const bool, const bool)
+    */
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        return from_bson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+    /// @}
+
+    //////////////////////////
+    // JSON Pointer support //
+    //////////////////////////
+
+    /// @name JSON Pointer functions
+    /// @{
+
+    /*!
+    @brief access specified element via JSON Pointer
+
+    Uses a JSON pointer to retrieve a reference to the respective JSON value.
+    No bound checking is performed. Similar to @ref operator[](const typename
+    object_t::key_type&), `null` values are created in arrays and objects if
+    necessary.
+
+    In particular:
+    - If the JSON pointer points to an object key that does not exist, it
+      is created an filled with a `null` value before a reference to it
+      is returned.
+    - If the JSON pointer points to an array index that does not exist, it
+      is created an filled with a `null` value before a reference to it
+      is returned. All indices between the current maximum and the given
+      index are also filled with `null`.
+    - The special value `-` is treated as a synonym for the index past the
+      end.
+
+    @param[in] ptr  a JSON pointer
+
+    @return reference to the element pointed to by @a ptr
+
+    @complexity Constant.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+
+    @liveexample{The behavior is shown in the example.,operatorjson_pointer}
+
+    @since version 2.0.0
+    */
+    reference operator[](const json_pointer& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /*!
+    @brief access specified element via JSON Pointer
+
+    Uses a JSON pointer to retrieve a reference to the respective JSON value.
+    No bound checking is performed. The function does not change the JSON
+    value; no `null` values are created. In particular, the special value
+    `-` yields an exception.
+
+    @param[in] ptr  JSON pointer to the desired element
+
+    @return const reference to the element pointed to by @a ptr
+
+    @complexity Constant.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+
+    @liveexample{The behavior is shown in the example.,operatorjson_pointer_const}
+
+    @since version 2.0.0
+    */
+    const_reference operator[](const json_pointer& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /*!
+    @brief access specified element via JSON Pointer
+
+    Returns a reference to the element at with specified JSON pointer @a ptr,
+    with bounds checking.
+
+    @param[in] ptr  JSON pointer to the desired element
+
+    @return reference to the element pointed to by @a ptr
+
+    @throw parse_error.106 if an array index in the passed JSON pointer @a ptr
+    begins with '0'. See example below.
+
+    @throw parse_error.109 if an array index in the passed JSON pointer @a ptr
+    is not a number. See example below.
+
+    @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr
+    is out of range. See example below.
+
+    @throw out_of_range.402 if the array index '-' is used in the passed JSON
+    pointer @a ptr. As `at` provides checked access (and no elements are
+    implicitly inserted), the index '-' is always invalid. See example below.
+
+    @throw out_of_range.403 if the JSON pointer describes a key of an object
+    which cannot be found. See example below.
+
+    @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved.
+    See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @since version 2.0.0
+
+    @liveexample{The behavior is shown in the example.,at_json_pointer}
+    */
+    reference at(const json_pointer& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    /*!
+    @brief access specified element via JSON Pointer
+
+    Returns a const reference to the element at with specified JSON pointer @a
+    ptr, with bounds checking.
+
+    @param[in] ptr  JSON pointer to the desired element
+
+    @return reference to the element pointed to by @a ptr
+
+    @throw parse_error.106 if an array index in the passed JSON pointer @a ptr
+    begins with '0'. See example below.
+
+    @throw parse_error.109 if an array index in the passed JSON pointer @a ptr
+    is not a number. See example below.
+
+    @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr
+    is out of range. See example below.
+
+    @throw out_of_range.402 if the array index '-' is used in the passed JSON
+    pointer @a ptr. As `at` provides checked access (and no elements are
+    implicitly inserted), the index '-' is always invalid. See example below.
+
+    @throw out_of_range.403 if the JSON pointer describes a key of an object
+    which cannot be found. See example below.
+
+    @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved.
+    See example below.
+
+    @exceptionsafety Strong guarantee: if an exception is thrown, there are no
+    changes in the JSON value.
+
+    @complexity Constant.
+
+    @since version 2.0.0
+
+    @liveexample{The behavior is shown in the example.,at_json_pointer_const}
+    */
+    const_reference at(const json_pointer& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    /*!
+    @brief return flattened JSON value
+
+    The function creates a JSON object whose keys are JSON pointers (see [RFC
+    6901](https://tools.ietf.org/html/rfc6901)) and whose values are all
+    primitive. The original JSON value can be restored using the @ref
+    unflatten() function.
+
+    @return an object that maps JSON pointers to primitive values
+
+    @note Empty objects and arrays are flattened to `null` and will not be
+          reconstructed correctly by the @ref unflatten() function.
+
+    @complexity Linear in the size the JSON value.
+
+    @liveexample{The following code shows how a JSON object is flattened to an
+    object whose keys consist of JSON pointers.,flatten}
+
+    @sa @ref unflatten() for the reverse function
+
+    @since version 2.0.0
+    */
+    basic_json flatten() const
+    {
+        basic_json result(value_t::object);
+        json_pointer::flatten("", *this, result);
+        return result;
+    }
+
+    /*!
+    @brief unflatten a previously flattened JSON value
+
+    The function restores the arbitrary nesting of a JSON value that has been
+    flattened before using the @ref flatten() function. The JSON value must
+    meet certain constraints:
+    1. The value must be an object.
+    2. The keys must be JSON pointers (see
+       [RFC 6901](https://tools.ietf.org/html/rfc6901))
+    3. The mapped values must be primitive JSON types.
+
+    @return the original JSON from a flattened version
+
+    @note Empty objects and arrays are flattened by @ref flatten() to `null`
+          values and can not unflattened to their original type. Apart from
+          this example, for a JSON value `j`, the following is always true:
+          `j == j.flatten().unflatten()`.
+
+    @complexity Linear in the size the JSON value.
+
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+
+    @liveexample{The following code shows how a flattened JSON object is
+    unflattened into the original nested JSON object.,unflatten}
+
+    @sa @ref flatten() for the reverse function
+
+    @since version 2.0.0
+    */
+    basic_json unflatten() const
+    {
+        return json_pointer::unflatten(*this);
+    }
+
+    /// @}
+
+    //////////////////////////
+    // JSON Patch functions //
+    //////////////////////////
+
+    /// @name JSON Patch functions
+    /// @{
+
+    /*!
+    @brief applies a JSON patch
+
+    [JSON Patch](http://jsonpatch.com) defines a JSON document structure for
+    expressing a sequence of operations to apply to a JSON) document. With
+    this function, a JSON Patch is applied to the current JSON value by
+    executing all operations from the patch.
+
+    @param[in] json_patch  JSON patch document
+    @return patched document
+
+    @note The application of a patch is atomic: Either all operations succeed
+          and the patched document is returned or an exception is thrown. In
+          any case, the original value is not changed: the patch is applied
+          to a copy of the value.
+
+    @throw parse_error.104 if the JSON patch does not consist of an array of
+    objects
+
+    @throw parse_error.105 if the JSON patch is malformed (e.g., mandatory
+    attributes are missing); example: `"operation add must have member path"`
+
+    @throw out_of_range.401 if an array index is out of range.
+
+    @throw out_of_range.403 if a JSON pointer inside the patch could not be
+    resolved successfully in the current JSON value; example: `"key baz not
+    found"`
+
+    @throw out_of_range.405 if JSON pointer has no parent ("add", "remove",
+    "move")
+
+    @throw other_error.501 if "test" operation was unsuccessful
+
+    @complexity Linear in the size of the JSON value and the length of the
+    JSON patch. As usually only a fraction of the JSON value is affected by
+    the patch, the complexity can usually be neglected.
+
+    @liveexample{The following code shows how a JSON patch is applied to a
+    value.,patch}
+
+    @sa @ref diff -- create a JSON patch by comparing two JSON values
+
+    @sa [RFC 6902 (JSON Patch)](https://tools.ietf.org/html/rfc6902)
+    @sa [RFC 6901 (JSON Pointer)](https://tools.ietf.org/html/rfc6901)
+
+    @since version 2.0.0
+    */
+    basic_json patch(const basic_json& json_patch) const
+    {
+        // make a working copy to apply the patch to
+        basic_json result = *this;
+
+        // the valid JSON Patch operations
+        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
+
+        const auto get_op = [](const std::string & op)
+        {
+            if (op == "add")
+            {
+                return patch_operations::add;
+            }
+            if (op == "remove")
+            {
+                return patch_operations::remove;
+            }
+            if (op == "replace")
+            {
+                return patch_operations::replace;
+            }
+            if (op == "move")
+            {
+                return patch_operations::move;
+            }
+            if (op == "copy")
+            {
+                return patch_operations::copy;
+            }
+            if (op == "test")
+            {
+                return patch_operations::test;
+            }
+
+            return patch_operations::invalid;
+        };
+
+        // wrapper for "add" operation; add value at ptr
+        const auto operation_add = [&result](json_pointer & ptr, basic_json val)
+        {
+            // adding to the root of the target document means replacing it
+            if (ptr.empty())
+            {
+                result = val;
+                return;
+            }
+
+            // make sure the top element of the pointer exists
+            json_pointer top_pointer = ptr.top();
+            if (top_pointer != ptr)
+            {
+                result.at(top_pointer);
+            }
+
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result[ptr];
+
+            switch (parent.m_type)
+            {
+                case value_t::null:
+                case value_t::object:
+                {
+                    // use operator[] to add value
+                    parent[last_path] = val;
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    if (last_path == "-")
+                    {
+                        // special case: append to back
+                        parent.push_back(val);
+                    }
+                    else
+                    {
+                        const auto idx = json_pointer::array_index(last_path);
+                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
+                        {
+                            // avoid undefined behavior
+                            JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
+                        }
+
+                        // default case: insert add offset
+                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
+                    }
+                    break;
+                }
+
+                // if there exists a parent it cannot be primitive
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false);  // LCOV_EXCL_LINE
+            }
+        };
+
+        // wrapper for "remove" operation; remove value at ptr
+        const auto operation_remove = [&result](json_pointer & ptr)
+        {
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result.at(ptr);
+
+            // remove child
+            if (parent.is_object())
+            {
+                // perform range check
+                auto it = parent.find(last_path);
+                if (JSON_HEDLEY_LIKELY(it != parent.end()))
+                {
+                    parent.erase(it);
+                }
+                else
+                {
+                    JSON_THROW(out_of_range::create(403, "key '" + last_path + "' not found"));
+                }
+            }
+            else if (parent.is_array())
+            {
+                // note erase performs range check
+                parent.erase(json_pointer::array_index(last_path));
+            }
+        };
+
+        // type check: top level value must be an array
+        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
+        {
+            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects"));
+        }
+
+        // iterate and apply the operations
+        for (const auto& val : json_patch)
+        {
+            // wrapper to get a value for an operation
+            const auto get_value = [&val](const std::string & op,
+                                          const std::string & member,
+                                          bool string_type) -> basic_json &
+            {
+                // find value
+                auto it = val.m_value.object->find(member);
+
+                // context-sensitive error message
+                const auto error_msg = (op == "op") ? "operation" : "operation '" + op + "'";
+
+                // check if desired value is present
+                if (JSON_HEDLEY_UNLIKELY(it == val.m_value.object->end()))
+                {
+                    JSON_THROW(parse_error::create(105, 0, error_msg + " must have member '" + member + "'"));
+                }
+
+                // check if result is of type string
+                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
+                {
+                    JSON_THROW(parse_error::create(105, 0, error_msg + " must have string member '" + member + "'"));
+                }
+
+                // no error: return value
+                return it->second;
+            };
+
+            // type check: every element of the array must be an object
+            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
+            {
+                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects"));
+            }
+
+            // collect mandatory members
+            const auto op = get_value("op", "op", true).template get<std::string>();
+            const auto path = get_value(op, "path", true).template get<std::string>();
+            json_pointer ptr(path);
+
+            switch (get_op(op))
+            {
+                case patch_operations::add:
+                {
+                    operation_add(ptr, get_value("add", "value", false));
+                    break;
+                }
+
+                case patch_operations::remove:
+                {
+                    operation_remove(ptr);
+                    break;
+                }
+
+                case patch_operations::replace:
+                {
+                    // the "path" location must exist - use at()
+                    result.at(ptr) = get_value("replace", "value", false);
+                    break;
+                }
+
+                case patch_operations::move:
+                {
+                    const auto from_path = get_value("move", "from", true).template get<std::string>();
+                    json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json v = result.at(from_ptr);
+
+                    // The move operation is functionally identical to a
+                    // "remove" operation on the "from" location, followed
+                    // immediately by an "add" operation at the target
+                    // location with the value that was just removed.
+                    operation_remove(from_ptr);
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::copy:
+                {
+                    const auto from_path = get_value("copy", "from", true).template get<std::string>();
+                    const json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json v = result.at(from_ptr);
+
+                    // The copy is functionally identical to an "add"
+                    // operation at the target location using the value
+                    // specified in the "from" member.
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::test:
+                {
+                    bool success = false;
+                    JSON_TRY
+                    {
+                        // check if "value" matches the one at "path"
+                        // the "path" location must exist - use at()
+                        success = (result.at(ptr) == get_value("test", "value", false));
+                    }
+                    JSON_INTERNAL_CATCH (out_of_range&)
+                    {
+                        // ignore out of range errors: success remains false
+                    }
+
+                    // throw an exception if test fails
+                    if (JSON_HEDLEY_UNLIKELY(!success))
+                    {
+                        JSON_THROW(other_error::create(501, "unsuccessful: " + val.dump()));
+                    }
+
+                    break;
+                }
+
+                default:
+                {
+                    // op must be "add", "remove", "replace", "move", "copy", or
+                    // "test"
+                    JSON_THROW(parse_error::create(105, 0, "operation value '" + op + "' is invalid"));
+                }
+            }
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief creates a diff as a JSON patch
+
+    Creates a [JSON Patch](http://jsonpatch.com) so that value @a source can
+    be changed into the value @a target by calling @ref patch function.
+
+    @invariant For two JSON values @a source and @a target, the following code
+    yields always `true`:
+    @code {.cpp}
+    source.patch(diff(source, target)) == target;
+    @endcode
+
+    @note Currently, only `remove`, `add`, and `replace` operations are
+          generated.
+
+    @param[in] source  JSON value to compare from
+    @param[in] target  JSON value to compare against
+    @param[in] path    helper value to create JSON pointers
+
+    @return a JSON patch to convert the @a source to @a target
+
+    @complexity Linear in the lengths of @a source and @a target.
+
+    @liveexample{The following code shows how a JSON patch is created as a
+    diff for two JSON values.,diff}
+
+    @sa @ref patch -- apply a JSON patch
+    @sa @ref merge_patch -- apply a JSON Merge Patch
+
+    @sa [RFC 6902 (JSON Patch)](https://tools.ietf.org/html/rfc6902)
+
+    @since version 2.0.0
+    */
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json diff(const basic_json& source, const basic_json& target,
+                           const std::string& path = "")
+    {
+        // the patch
+        basic_json result(value_t::array);
+
+        // if the values are the same, return empty patch
+        if (source == target)
+        {
+            return result;
+        }
+
+        if (source.type() != target.type())
+        {
+            // different types: replace value
+            result.push_back(
+            {
+                {"op", "replace"}, {"path", path}, {"value", target}
+            });
+            return result;
+        }
+
+        switch (source.type())
+        {
+            case value_t::array:
+            {
+                // first pass: traverse common elements
+                std::size_t i = 0;
+                while (i < source.size() && i < target.size())
+                {
+                    // recursive call to compare array values at index i
+                    auto temp_diff = diff(source[i], target[i], path + "/" + std::to_string(i));
+                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    ++i;
+                }
+
+                // i now reached the end of at least one array
+                // in a second pass, traverse the remaining elements
+
+                // remove my remaining elements
+                const auto end_index = static_cast<difference_type>(result.size());
+                while (i < source.size())
+                {
+                    // add operations in reverse order to avoid invalid
+                    // indices
+                    result.insert(result.begin() + end_index, object(
+                    {
+                        {"op", "remove"},
+                        {"path", path + "/" + std::to_string(i)}
+                    }));
+                    ++i;
+                }
+
+                // add other remaining elements
+                while (i < target.size())
+                {
+                    result.push_back(
+                    {
+                        {"op", "add"},
+                        {"path", path + "/-"},
+                        {"value", target[i]}
+                    });
+                    ++i;
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // first pass: traverse this object's elements
+                for (auto it = source.cbegin(); it != source.cend(); ++it)
+                {
+                    // escape the key name to be used in a JSON patch
+                    const auto key = json_pointer::escape(it.key());
+
+                    if (target.find(it.key()) != target.end())
+                    {
+                        // recursive call to compare object values at key it
+                        auto temp_diff = diff(it.value(), target[it.key()], path + "/" + key);
+                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    }
+                    else
+                    {
+                        // found a key that is not in o -> remove it
+                        result.push_back(object(
+                        {
+                            {"op", "remove"}, {"path", path + "/" + key}
+                        }));
+                    }
+                }
+
+                // second pass: traverse other object's elements
+                for (auto it = target.cbegin(); it != target.cend(); ++it)
+                {
+                    if (source.find(it.key()) == source.end())
+                    {
+                        // found a key that is not in this -> add it
+                        const auto key = json_pointer::escape(it.key());
+                        result.push_back(
+                        {
+                            {"op", "add"}, {"path", path + "/" + key},
+                            {"value", it.value()}
+                        });
+                    }
+                }
+
+                break;
+            }
+
+            default:
+            {
+                // both primitive type: replace value
+                result.push_back(
+                {
+                    {"op", "replace"}, {"path", path}, {"value", target}
+                });
+                break;
+            }
+        }
+
+        return result;
+    }
+
+    /// @}
+
+    ////////////////////////////////
+    // JSON Merge Patch functions //
+    ////////////////////////////////
+
+    /// @name JSON Merge Patch functions
+    /// @{
+
+    /*!
+    @brief applies a JSON Merge Patch
+
+    The merge patch format is primarily intended for use with the HTTP PATCH
+    method as a means of describing a set of modifications to a target
+    resource's content. This function applies a merge patch to the current
+    JSON value.
+
+    The function implements the following algorithm from Section 2 of
+    [RFC 7396 (JSON Merge Patch)](https://tools.ietf.org/html/rfc7396):
+
+    ```
+    define MergePatch(Target, Patch):
+      if Patch is an Object:
+        if Target is not an Object:
+          Target = {} // Ignore the contents and set it to an empty Object
+        for each Name/Value pair in Patch:
+          if Value is null:
+            if Name exists in Target:
+              remove the Name/Value pair from Target
+          else:
+            Target[Name] = MergePatch(Target[Name], Value)
+        return Target
+      else:
+        return Patch
+    ```
+
+    Thereby, `Target` is the current object; that is, the patch is applied to
+    the current value.
+
+    @param[in] apply_patch  the patch to apply
+
+    @complexity Linear in the lengths of @a patch.
+
+    @liveexample{The following code shows how a JSON Merge Patch is applied to
+    a JSON document.,merge_patch}
+
+    @sa @ref patch -- apply a JSON patch
+    @sa [RFC 7396 (JSON Merge Patch)](https://tools.ietf.org/html/rfc7396)
+
+    @since version 3.0.0
+    */
+    void merge_patch(const basic_json& apply_patch)
+    {
+        if (apply_patch.is_object())
+        {
+            if (!is_object())
+            {
+                *this = object();
+            }
+            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
+            {
+                if (it.value().is_null())
+                {
+                    erase(it.key());
+                }
+                else
+                {
+                    operator[](it.key()).merge_patch(it.value());
+                }
+            }
+        }
+        else
+        {
+            *this = apply_patch;
+        }
+    }
+
+    /// @}
+};
+
+/*!
+@brief user-defined to_string function for JSON values
+
+This function implements a user-defined to_string  for JSON objects.
+
+@param[in] j  a JSON object
+@return a std::string object
+*/
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
+{
+    return j.dump();
+}
+} // namespace nlohmann
+
+///////////////////////
+// nonmember support //
+///////////////////////
+
+// specialization of std::swap, and std::hash
+namespace std
+{
+
+/// hash value for JSON objects
+template<>
+struct hash<nlohmann::json>
+{
+    /*!
+    @brief return a hash value for a JSON object
+
+    @since version 1.0.0
+    */
+    std::size_t operator()(const nlohmann::json& j) const
+    {
+        return nlohmann::detail::hash(j);
+    }
+};
+
+/// specialization for std::less<value_t>
+/// @note: do not remove the space after '<',
+///        see https://github.com/nlohmann/json/pull/679
+template<>
+struct less<::nlohmann::detail::value_t>
+{
+    /*!
+    @brief compare two value_t enum values
+    @since version 3.0.0
+    */
+    bool operator()(nlohmann::detail::value_t lhs,
+                    nlohmann::detail::value_t rhs) const noexcept
+    {
+        return nlohmann::detail::operator<(lhs, rhs);
+    }
+};
+
+// C++20 prohibit function specialization in the std namespace.
+#ifndef JSON_HAS_CPP_20
+
+/*!
+@brief exchanges the values of two JSON objects
+
+@since version 1.0.0
+*/
+template<>
+inline void swap<nlohmann::json>(nlohmann::json& j1, nlohmann::json& j2) noexcept(
+    is_nothrow_move_constructible<nlohmann::json>::value&&
+    is_nothrow_move_assignable<nlohmann::json>::value
+                              )
+{
+    j1.swap(j2);
+}
+
+#endif
+
+} // namespace std
+
+/*!
+@brief user-defined string literal for JSON values
+
+This operator implements a user-defined string literal for JSON objects. It
+can be used by adding `"_json"` to a string literal and returns a JSON object
+if no parse error occurred.
+
+@param[in] s  a string representation of a JSON object
+@param[in] n  the length of string @a s
+@return a JSON object
+
+@since version 1.0.0
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json operator "" _json(const char* s, std::size_t n)
+{
+    return nlohmann::json::parse(s, s + n);
+}
+
+/*!
+@brief user-defined string literal for JSON pointer
+
+This operator implements a user-defined string literal for JSON Pointers. It
+can be used by adding `"_json_pointer"` to a string literal and returns a JSON pointer
+object if no parse error occurred.
+
+@param[in] s  a string representation of a JSON Pointer
+@param[in] n  the length of string @a s
+@return a JSON pointer object
+
+@since version 2.0.0
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
+{
+    return nlohmann::json::json_pointer(std::string(s, n));
+}
+
+// #include <nlohmann/detail/macro_unscope.hpp>
+
+
+// restore GCC/clang diagnostic settings
+#if defined(__clang__) || defined(__GNUC__) || defined(__GNUG__)
+    #pragma GCC diagnostic pop
+#endif
+#if defined(__clang__)
+    #pragma GCC diagnostic pop
+#endif
+
+// clean up
+#undef JSON_ASSERT
+#undef JSON_INTERNAL_CATCH
+#undef JSON_CATCH
+#undef JSON_THROW
+#undef JSON_TRY
+#undef JSON_HAS_CPP_14
+#undef JSON_HAS_CPP_17
+#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
+#undef NLOHMANN_BASIC_JSON_TPL
+#undef JSON_EXPLICIT
+
+// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
+#undef JSON_HEDLEY_ALWAYS_INLINE
+#undef JSON_HEDLEY_ARM_VERSION
+#undef JSON_HEDLEY_ARM_VERSION_CHECK
+#undef JSON_HEDLEY_ARRAY_PARAM
+#undef JSON_HEDLEY_ASSUME
+#undef JSON_HEDLEY_BEGIN_C_DECLS
+#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#undef JSON_HEDLEY_CLANG_HAS_WARNING
+#undef JSON_HEDLEY_COMPCERT_VERSION
+#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#undef JSON_HEDLEY_CONCAT
+#undef JSON_HEDLEY_CONCAT3
+#undef JSON_HEDLEY_CONCAT3_EX
+#undef JSON_HEDLEY_CONCAT_EX
+#undef JSON_HEDLEY_CONST
+#undef JSON_HEDLEY_CONSTEXPR
+#undef JSON_HEDLEY_CONST_CAST
+#undef JSON_HEDLEY_CPP_CAST
+#undef JSON_HEDLEY_CRAY_VERSION
+#undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#undef JSON_HEDLEY_C_DECL
+#undef JSON_HEDLEY_DEPRECATED
+#undef JSON_HEDLEY_DEPRECATED_FOR
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#undef JSON_HEDLEY_DIAGNOSTIC_POP
+#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#undef JSON_HEDLEY_DMC_VERSION
+#undef JSON_HEDLEY_DMC_VERSION_CHECK
+#undef JSON_HEDLEY_EMPTY_BASES
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#undef JSON_HEDLEY_END_C_DECLS
+#undef JSON_HEDLEY_FLAGS
+#undef JSON_HEDLEY_FLAGS_CAST
+#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#undef JSON_HEDLEY_GCC_HAS_FEATURE
+#undef JSON_HEDLEY_GCC_HAS_WARNING
+#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#undef JSON_HEDLEY_GCC_VERSION
+#undef JSON_HEDLEY_GCC_VERSION_CHECK
+#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#undef JSON_HEDLEY_GNUC_HAS_WARNING
+#undef JSON_HEDLEY_GNUC_VERSION
+#undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#undef JSON_HEDLEY_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_BUILTIN
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_EXTENSION
+#undef JSON_HEDLEY_HAS_FEATURE
+#undef JSON_HEDLEY_HAS_WARNING
+#undef JSON_HEDLEY_IAR_VERSION
+#undef JSON_HEDLEY_IAR_VERSION_CHECK
+#undef JSON_HEDLEY_IBM_VERSION
+#undef JSON_HEDLEY_IBM_VERSION_CHECK
+#undef JSON_HEDLEY_IMPORT
+#undef JSON_HEDLEY_INLINE
+#undef JSON_HEDLEY_INTEL_VERSION
+#undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#undef JSON_HEDLEY_IS_CONSTANT
+#undef JSON_HEDLEY_IS_CONSTEXPR_
+#undef JSON_HEDLEY_LIKELY
+#undef JSON_HEDLEY_MALLOC
+#undef JSON_HEDLEY_MESSAGE
+#undef JSON_HEDLEY_MSVC_VERSION
+#undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#undef JSON_HEDLEY_NEVER_INLINE
+#undef JSON_HEDLEY_NON_NULL
+#undef JSON_HEDLEY_NO_ESCAPE
+#undef JSON_HEDLEY_NO_RETURN
+#undef JSON_HEDLEY_NO_THROW
+#undef JSON_HEDLEY_NULL
+#undef JSON_HEDLEY_PELLES_VERSION
+#undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#undef JSON_HEDLEY_PGI_VERSION
+#undef JSON_HEDLEY_PGI_VERSION_CHECK
+#undef JSON_HEDLEY_PREDICT
+#undef JSON_HEDLEY_PRINTF_FORMAT
+#undef JSON_HEDLEY_PRIVATE
+#undef JSON_HEDLEY_PUBLIC
+#undef JSON_HEDLEY_PURE
+#undef JSON_HEDLEY_REINTERPRET_CAST
+#undef JSON_HEDLEY_REQUIRE
+#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#undef JSON_HEDLEY_REQUIRE_MSG
+#undef JSON_HEDLEY_RESTRICT
+#undef JSON_HEDLEY_RETURNS_NON_NULL
+#undef JSON_HEDLEY_SENTINEL
+#undef JSON_HEDLEY_STATIC_ASSERT
+#undef JSON_HEDLEY_STATIC_CAST
+#undef JSON_HEDLEY_STRINGIFY
+#undef JSON_HEDLEY_STRINGIFY_EX
+#undef JSON_HEDLEY_SUNPRO_VERSION
+#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#undef JSON_HEDLEY_TINYC_VERSION
+#undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#undef JSON_HEDLEY_TI_ARMCL_VERSION
+#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL2000_VERSION
+#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL430_VERSION
+#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL6X_VERSION
+#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL7X_VERSION
+#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CLPRU_VERSION
+#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#undef JSON_HEDLEY_TI_VERSION
+#undef JSON_HEDLEY_TI_VERSION_CHECK
+#undef JSON_HEDLEY_UNAVAILABLE
+#undef JSON_HEDLEY_UNLIKELY
+#undef JSON_HEDLEY_UNPREDICTABLE
+#undef JSON_HEDLEY_UNREACHABLE
+#undef JSON_HEDLEY_UNREACHABLE_RETURN
+#undef JSON_HEDLEY_VERSION
+#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#undef JSON_HEDLEY_VERSION_ENCODE
+#undef JSON_HEDLEY_WARNING
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#undef JSON_HEDLEY_FALL_THROUGH
+
+
+
+#endif  // INCLUDE_NLOHMANN_JSON_HPP_
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/Interop/Auth/Public/FIRAuthInterop.h b/ChattingApp 000/Pods/FirebaseFirestore/Interop/Auth/Public/FIRAuthInterop.h
new file mode 100644
index 0000000..a33da7c
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/Interop/Auth/Public/FIRAuthInterop.h	
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRAuthInterop_h
+#define FIRAuthInterop_h
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** @typedef FIRTokenCallback
+ @brief The type of block which gets called when a token is ready.
+ */
+typedef void (^FIRTokenCallback)(NSString *_Nullable token, NSError *_Nullable error)
+    NS_SWIFT_NAME(TokenCallback);
+
+/// Common methods for Auth interoperability.
+NS_SWIFT_NAME(AuthInterop)
+@protocol FIRAuthInterop
+
+/// Retrieves the Firebase authentication token, possibly refreshing it if it has expired.
+- (void)getTokenForcingRefresh:(BOOL)forceRefresh withCallback:(FIRTokenCallback)callback;
+
+/// Get the current Auth user's UID. Returns nil if there is no user signed in.
+- (nullable NSString *)getUserID;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif /* FIRAuthInterop_h */
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/LICENSE b/ChattingApp 000/Pods/FirebaseFirestore/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
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+      institute patent litigation against any entity (including a
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+      or contributory patent infringement, then any patent licenses
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+
+   4. Redistribution. You may reproduce and distribute copies of the
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+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
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+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
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+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      appropriateness of using or redistributing the Work and assume any
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+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
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+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
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+      file or class name and description of purpose be included on the
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/ChattingApp 000/Pods/FirebaseFirestore/README.md b/ChattingApp 000/Pods/FirebaseFirestore/README.md
new file mode 100644
index 0000000..335fbb8
--- /dev/null
+++ b/ChattingApp 000/Pods/FirebaseFirestore/README.md	
@@ -0,0 +1,333 @@
+[![Version](https://img.shields.io/cocoapods/v/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![License](https://img.shields.io/cocoapods/l/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+[![Platform](https://img.shields.io/cocoapods/p/Firebase.svg?style=flat)](https://cocoapods.org/pods/Firebase)
+
+[![Actions Status][gh-abtesting-badge]][gh-actions]
+[![Actions Status][gh-appcheck-badge]][gh-actions]
+[![Actions Status][gh-appdistribution-badge]][gh-actions]
+[![Actions Status][gh-auth-badge]][gh-actions]
+[![Actions Status][gh-cocoapods-integration-badge]][gh-actions]
+[![Actions Status][gh-core-badge]][gh-actions]
+[![Actions Status][gh-core-diagnostics-badge]][gh-actions]
+[![Actions Status][gh-crashlytics-badge]][gh-actions]
+[![Actions Status][gh-database-badge]][gh-actions]
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+[![Actions Status][gh-dynamiclinks-badge]][gh-actions]
+[![Actions Status][gh-firebasepod-badge]][gh-actions]
+[![Actions Status][gh-firestore-badge]][gh-actions]
+[![Actions Status][gh-functions-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+[![Actions Status][gh-google-utilities-components-badge]][gh-actions]
+[![Actions Status][gh-inappmessaging-badge]][gh-actions]
+[![Actions Status][gh-interop-badge]][gh-actions]
+[![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-mlmodeldownloader-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
+[![Actions Status][gh-remoteconfig-badge]][gh-actions]
+[![Actions Status][gh-storage-badge]][gh-actions]
+[![Actions Status][gh-symbolcollision-badge]][gh-actions]
+[![Actions Status][gh-zip-badge]][gh-actions]
+
+# Firebase Apple Open Source Development
+
+This repository contains all Apple platform Firebase SDK source except FirebaseAnalytics
+and FirebaseML.
+
+Firebase is an app development platform with tools to help you build, grow and
+monetize your app. More information about Firebase can be found on the
+[official Firebase website](https://firebase.google.com).
+
+**Note** _FirebaseCombineSwift_ contains support for Apple's Combine framework. This module is currently under development, and not yet supported for use in production environments. Fore more details, please refer to the [docs](FirebaseCombineSwift/README.md).
+
+## Installation
+
+See the subsections below for details about the different installation methods.
+1. [Standard pod install](README.md#standard-pod-install)
+1. [Swift Package Manager](SwiftPackageManager.md)
+1. [Installing from the GitHub repo](README.md#installing-from-github)
+1. [Experimental Carthage](README.md#carthage-ios-only)
+
+### Standard pod install
+
+Go to
+[https://firebase.google.com/docs/ios/setup](https://firebase.google.com/docs/ios/setup).
+
+### Swift Package Manager
+
+Instructions for [Swift Package Manager](https://swift.org/package-manager/) support can be
+found at [SwiftPackageManager.md](SwiftPackageManager.md).
+
+### Installing from GitHub
+
+These instructions can be used to access the Firebase repo at other branches,
+tags, or commits.
+
+#### Background
+
+See
+[the Podfile Syntax Reference](https://guides.cocoapods.org/syntax/podfile.html#pod)
+for instructions and options about overriding pod source locations.
+
+#### Accessing Firebase Source Snapshots
+
+All of the official releases are tagged in this repo and available via CocoaPods. To access a local
+source snapshot or unreleased branch, use Podfile directives like the following:
+
+To access FirebaseFirestore via a branch:
+```ruby
+pod 'FirebaseCore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+pod 'FirebaseFirestore', :git => 'https://github.com/firebase/firebase-ios-sdk.git', :branch => 'master'
+```
+
+To access FirebaseMessaging via a checked out version of the firebase-ios-sdk repo do:
+
+```ruby
+pod 'FirebaseCore', :path => '/path/to/firebase-ios-sdk'
+pod 'FirebaseMessaging', :path => '/path/to/firebase-ios-sdk'
+```
+
+### Carthage (iOS only)
+
+Instructions for the experimental Carthage distribution are at
+[Carthage](Carthage.md).
+
+### Using Firebase from a Framework or a library
+
+[Using Firebase from a Framework or a library](docs/firebase_in_libraries.md)
+
+## Development
+
+To develop Firebase software in this repository, ensure that you have at least
+the following software:
+
+  * Xcode 12.2 (or later)
+
+CocoaPods is still the canonical way to develop, but much of the repo now supports
+development with Swift Package Manager.
+
+### CocoaPods
+
+Install
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+```ruby
+pod gen Firebase{name here}.podspec --local-sources=./ --auto-open --platforms=ios
+```
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+Firestore has a self contained Xcode project. See
+[Firestore/README.md](Firestore/README.md).
+
+#### Development for Catalyst
+* `pod gen {name here}.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Swift Package Manager
+* To enable test schemes: `./scripts/setup_spm_tests.sh`
+* `open Package.swift` or double click `Package.swift` in Finder.
+* Xcode will open the project
+  * Choose a scheme for a library to build or test suite to run
+  * Choose a target platform by selecting the run destination along with the scheme
+
+### Adding a New Firebase Pod
+
+See [AddNewPod.md](AddNewPod.md).
+
+### Managing Headers and Imports
+
+See [HeadersImports.md](HeadersImports.md).
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@12
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+### Running Sample Apps
+In order to run the sample apps and integration tests, you'll need a valid
+`GoogleService-Info.plist` file. The Firebase Xcode project contains dummy plist
+files without real values, but can be replaced with real plist files. To get your own
+`GoogleService-Info.plist` files:
+
+1. Go to the [Firebase Console](https://console.firebase.google.com/)
+2. Create a new Firebase project, if you don't already have one
+3. For each sample app you want to test, create a new Firebase app with the sample app's bundle
+identifier (e.g. `com.google.Database-Example`)
+4. Download the resulting `GoogleService-Info.plist` and add it to the Xcode project.
+
+### Coverage Report Generation
+
+See [scripts/code_coverage_report/README.md](scripts/code_coverage_report/README.md).
+
+## Specific Component Instructions
+See the sections below for any special instructions for those components.
+
+### Firebase Auth
+
+If you're doing specific Firebase Auth development, see
+[the Auth Sample README](FirebaseAuth/Tests/Sample/README.md) for instructions about
+building and running the FirebaseAuth pod along with various samples and tests.
+
+### Firebase Database
+
+The Firebase Database Integration tests can be run against a locally running Database Emulator
+or against a production instance.
+
+To run against a local emulator instance, invoke `./scripts/run_database_emulator.sh start` before
+running the integration test.
+
+To run against a production instance, provide a valid GoogleServices-Info.plist and copy it to
+`FirebaseDatabase/Tests/Resources/GoogleService-Info.plist`. Your Security Rule must be set to
+[public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
+running.
+
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
+### Firebase Storage
+
+To run the Storage Integration tests, follow the instructions in
+[FIRStorageIntegrationTests.m](FirebaseStorage/Tests/Integration/FIRStorageIntegrationTests.m).
+
+#### Push Notifications
+
+Push notifications can only be delivered to specially provisioned App IDs in the developer portal.
+In order to actually test receiving push notifications, you will need to:
+
+1. Change the bundle identifier of the sample app to something you own in your Apple Developer
+account, and enable that App ID for push notifications.
+2. You'll also need to
+[upload your APNs Provider Authentication Key or certificate to the
+Firebase Console](https://firebase.google.com/docs/cloud-messaging/ios/certs)
+at **Project Settings > Cloud Messaging > [Your Firebase App]**.
+3. Ensure your iOS device is added to your Apple Developer portal as a test device.
+
+#### iOS Simulator
+
+The iOS Simulator cannot register for remote notifications, and will not receive push notifications.
+In order to receive push notifications, you'll have to follow the steps above and run the app on a
+physical device.
+
+## Building with Firebase on Apple platforms
+
+At this time, not all of Firebase's products are available across all Apple platforms. However,
+Firebase is constantly evolving and community supported efforts have helped expand Firebase's support.
+To keep up with the latest info regarding Firebase's support across Apple platforms, refer to
+[this chart](https://firebase.google.com/docs/ios/learn-more#firebase_library_support_by_platform)
+in Firebase's documentation.
+
+### Community Supported Efforts
+
+We've seen an amazing amount of interest and contributions to improve the Firebase SDKs, and we are
+very grateful!  We'd like to empower as many developers as we can to be able to use Firebase and
+participate in the Firebase community.
+
+#### tvOS, macOS, watchOS and Catalyst
+Thanks to contributions from the community, many of Firebase SDKs now compile, run unit tests, and
+work on tvOS, macOS, watchOS and Catalyst.
+
+For tvOS, see the [Sample](Example/tvOSSample).
+For watchOS, currently only Messaging, Storage and Crashlytics (and their dependencies) have limited
+support. See the [Independent Watch App Sample](Example/watchOSSample).
+
+Keep in mind that macOS, tvOS, watchOS and Catalyst are not officially supported by Firebase, and
+this repository is actively developed primarily for iOS. While we can catch basic unit test issues
+with GitHub Actions, there may be some changes where the SDK no longer works as expected on macOS,
+tvOS or watchOS. If you encounter this, please
+[file an issue](https://github.com/firebase/firebase-ios-sdk/issues).
+
+During app setup in the console, you may get to a step that mentions something like "Checking if the
+app has communicated with our servers". This relies on Analytics and will not work on
+macOS/tvOS/watchOS/Catalyst.
+**It's safe to ignore the message and continue**, the rest of the SDKs will work as expected.
+
+#### Additional MacOS and Catalyst Notes
+
+* FirebaseAuth and FirebaseMessaging require adding `Keychain Sharing Capability`
+to Build Settings.
+* For Catalyst, FirebaseFirestore requires signing the
+[gRPC Resource target](https://github.com/firebase/firebase-ios-sdk/issues/3500#issuecomment-518741681).
+
+#### Additional Crashlytics Notes
+* watchOS has limited support. Due to watchOS restrictions, mach exceptions and signal crashes are
+not recorded. (Crashes in SwiftUI are generated as mach exceptions, so will not be recorded)
+
+## Roadmap
+
+See [Roadmap](ROADMAP.md) for more about the Firebase iOS SDK Open Source
+plans and directions.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository are licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+Your use of Firebase is governed by the
+[Terms of Service for Firebase Services](https://firebase.google.com/terms/).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-abtesting-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/abtesting/badge.svg
+[gh-appcheck-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/app_check/badge.svg
+[gh-appdistribution-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/appdistribution/badge.svg
+[gh-auth-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/auth/badge.svg
+[gh-cocoapods-integration-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/cocoapods-integration/badge.svg
+[gh-core-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core/badge.svg
+[gh-core-diagnostics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/core-diagnostics/badge.svg
+[gh-crashlytics-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/crashlytics/badge.svg
+[gh-database-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/database/badge.svg
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
+[gh-dynamiclinks-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/dynamiclinks/badge.svg
+[gh-firebasepod-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firebasepod/badge.svg
+[gh-firestore-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/firestore/badge.svg
+[gh-functions-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/functions/badge.svg
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
+[gh-google-utilities-components-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities-components/badge.svg
+[gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
+[gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
+[gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-mlmodeldownloader-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/mlmodeldownloader/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
+[gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
+[gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
+[gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg
+[gh-zip-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/zip/badge.svg
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/LICENSE b/ChattingApp 000/Pods/GTMSessionFetcher/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      "License" shall mean the terms and conditions for use, reproduction,
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diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/README.md b/ChattingApp 000/Pods/GTMSessionFetcher/README.md
new file mode 100644
index 0000000..ae8ff04
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/README.md	
@@ -0,0 +1,23 @@
+# Google Toolbox for Mac - Session Fetcher #
+
+**Project site** <https://github.com/google/gtm-session-fetcher><br>
+**Discussion group** <http://groups.google.com/group/google-toolbox-for-mac>
+
+[![Build Status](https://github.com/google/gtm-session-fetcher/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/google/gtm-session-fetcher/actions/workflows/main.yml)
+
+`GTMSessionFetcher` makes it easy for Cocoa applications to perform http
+operations. The fetcher is implemented as a wrapper on `NSURLSession`, so its
+behavior is asynchronous and uses operating-system settings on iOS and Mac OS X.
+
+Features include:
+- Simple to build; only one source/header file pair is required
+- Simple to use: takes just two lines of code to fetch a request
+- Supports upload and download sessions
+- Flexible cookie storage
+- Automatic retry on errors, with exponential backoff
+- Support for generating multipart MIME upload streams
+- Easy, convenient logging of http requests and responses
+- Supports plug-in authentication such as with GTMAppAuth
+- Easily testable; self-mocking
+- Automatic rate limiting when created by the `GTMSessionFetcherService` factory class
+- Fully independent of other projects
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.h b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.h
new file mode 100644
index 0000000..1dee658
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.h	
@@ -0,0 +1,1386 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// GTMSessionFetcher is a wrapper around NSURLSession for http operations.
+//
+// What does this offer on top of of NSURLSession?
+//
+// - Block-style callbacks for useful functionality like progress rather
+//   than delegate methods.
+// - Out-of-process uploads and downloads using NSURLSession, including
+//   management of fetches after relaunch.
+// - Integration with GTMAppAuth for invisible management and refresh of
+//   authorization tokens.
+// - Pretty-printed http logging.
+// - Cookies handling that does not interfere with or get interfered with
+//   by WebKit cookies or on Mac by Safari and other apps.
+// - Credentials handling for the http operation.
+// - Rate-limiting and cookie grouping when fetchers are created with
+//   GTMSessionFetcherService.
+//
+// If the bodyData or bodyFileURL property is set, then a POST request is assumed.
+//
+// Each fetcher is assumed to be for a one-shot fetch request; don't reuse the object
+// for a second fetch.
+//
+// The fetcher will be self-retained as long as a connection is pending.
+//
+// To keep user activity private, URLs must have an https scheme (unless the property
+// allowedInsecureSchemes is set to permit the scheme.)
+//
+// Callbacks will be released when the fetch completes or is stopped, so there is no need
+// to use weak self references in the callback blocks.
+//
+// Sample usage:
+//
+//  _fetcherService = [[GTMSessionFetcherService alloc] init];
+//
+//  GTMSessionFetcher *myFetcher = [_fetcherService fetcherWithURLString:myURLString];
+//  myFetcher.retryEnabled = YES;
+//  myFetcher.comment = @"First profile image";
+//
+//  // Optionally specify a file URL or NSData for the request body to upload.
+//  myFetcher.bodyData = [postString dataUsingEncoding:NSUTF8StringEncoding];
+//
+//  [myFetcher beginFetchWithCompletionHandler:^(NSData *data, NSError *error) {
+//    if (error != nil) {
+//      // Server status code or network error.
+//      //
+//      // If the domain is kGTMSessionFetcherStatusDomain then the error code
+//      // is a failure status from the server.
+//    } else {
+//      // Fetch succeeded.
+//    }
+//  }];
+//
+// There is also a beginFetch call that takes a pointer and selector for the completion handler;
+// a pointer and selector is a better style when the callback is a substantial, separate method.
+//
+// NOTE:  Fetches may retrieve data from the server even though the server
+//        returned an error, so the criteria for success is a non-nil error.
+//        The completion handler is called when the server status is >= 300 with an NSError
+//        having domain kGTMSessionFetcherStatusDomain and code set to the server status.
+//
+//        Status codes are at <http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html>
+//
+//
+// Background session support:
+//
+// Out-of-process uploads and downloads may be created by setting the fetcher's
+// useBackgroundSession property. Data to be uploaded should be provided via
+// the uploadFileURL property; the download destination should be specified with
+// the destinationFileURL.  NOTE: Background upload files should be in a location
+// that will be valid even after the device is restarted, so the file should not
+// be uploaded from a system temporary or cache directory.
+//
+// Background session transfers are slower, and should typically be used only
+// for very large downloads or uploads (hundreds of megabytes).
+//
+// When background sessions are used in iOS apps, the application delegate must
+// pass through the parameters from UIApplicationDelegate's
+// application:handleEventsForBackgroundURLSession:completionHandler: to the
+// fetcher class.
+//
+// When the application has been relaunched, it may also create a new fetcher
+// instance to handle completion of the transfers.
+//
+//  - (void)application:(UIApplication *)application
+//      handleEventsForBackgroundURLSession:(NSString *)identifier
+//                        completionHandler:(void (^)())completionHandler {
+//    // Application was re-launched on completing an out-of-process download.
+//
+//    // Pass the URLSession info related to this re-launch to the fetcher class.
+//    [GTMSessionFetcher application:application
+//        handleEventsForBackgroundURLSession:identifier
+//                          completionHandler:completionHandler];
+//
+//    // Get a fetcher related to this re-launch and re-hook up a completionHandler to it.
+//    GTMSessionFetcher *fetcher = [GTMSessionFetcher fetcherWithSessionIdentifier:identifier];
+//    NSURL *destinationFileURL = fetcher.destinationFileURL;
+//    fetcher.completionHandler = ^(NSData *data, NSError *error) {
+//      [self downloadCompletedToFile:destinationFileURL error:error];
+//    };
+//  }
+//
+//
+// Threading and queue support:
+//
+// Networking always happens on a background thread; there is no advantage to
+// changing thread or queue to create or start a fetcher.
+//
+// Callbacks are run on the main thread; alternatively, the app may set the
+// fetcher's callbackQueue to a dispatch queue.
+//
+// Once the fetcher's beginFetch method has been called, the fetcher's methods and
+// properties may be accessed from any thread.
+//
+// Downloading to disk:
+//
+// To have downloaded data saved directly to disk, specify a file URL for the
+// destinationFileURL property.
+//
+// HTTP methods and headers:
+//
+// Alternative HTTP methods, like PUT, and custom headers can be specified by
+// creating the fetcher with an appropriate NSMutableURLRequest.
+//
+// Custom headers can also be provided per-request via an instance of `GTMFetcherDecoratorProtocol`
+// passed to `-[GTMSessionFetcherService addDecorator:]`.
+//
+// Caching:
+//
+// The fetcher avoids caching. That is best for API requests, but may hurt
+// repeat fetches of static data. Apps may enable a persistent disk cache by
+// customizing the config:
+//
+//  fetcher.configurationBlock = ^(GTMSessionFetcher *configFetcher,
+//                                 NSURLSessionConfiguration *config) {
+//    config.URLCache = [NSURLCache sharedURLCache];
+//  };
+//
+// Or use the standard system config to share cookie storage with web views
+// and to enable disk caching:
+//
+//  fetcher.configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+//
+//
+// Cookies:
+//
+// There are three supported mechanisms for remembering cookies between fetches.
+//
+// By default, a standalone GTMSessionFetcher uses a mutable array held
+// statically to track cookies for all instantiated fetchers.  This avoids
+// cookies being set by servers for the application from interfering with
+// Safari and WebKit cookie settings, and vice versa.
+// The fetcher cookies are lost when the application quits.
+//
+// To rely instead on WebKit's global NSHTTPCookieStorage, set the fetcher's
+// cookieStorage property:
+//   myFetcher.cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
+//
+// To share cookies with other apps, use the method introduced in iOS 9/OS X 10.11:
+//   myFetcher.cookieStorage =
+//     [NSHTTPCookieStorage sharedCookieStorageForGroupContainerIdentifier:kMyCompanyContainedID];
+//
+// To ignore existing cookies and only have cookies related to the single fetch
+// be applied, make a temporary cookie storage object:
+//   myFetcher.cookieStorage = [[GTMSessionCookieStorage alloc] init];
+//
+// Note: cookies set while following redirects will be sent to the server, as
+// the redirects are followed by the fetcher.
+//
+// To completely disable cookies, adjust the session configuration appropriately
+// in the fetcher or fetcher service:
+//  fetcher.configurationBlock = ^(GTMSessionFetcher *configFetcher,
+//                                 NSURLSessionConfiguration *config) {
+//    config.HTTPCookieAcceptPolicy = NSHTTPCookieAcceptPolicyNever;
+//    config.HTTPShouldSetCookies = NO;
+//  };
+//
+// If the fetcher is created from a GTMSessionFetcherService object
+// then the cookie storage mechanism is set to use the cookie storage in the
+// service object rather than the static storage. Disabling cookies in the
+// session configuration set on a service object will disable cookies for all
+// fetchers created from that GTMSessionFetcherService object, since the session
+// configuration is propagated to the fetcher.
+//
+//
+// Monitoring data transfers.
+//
+// The fetcher supports a variety of properties for progress monitoring
+// progress with callback blocks.
+//  GTMSessionFetcherSendProgressBlock sendProgressBlock
+//  GTMSessionFetcherReceivedProgressBlock receivedProgressBlock
+//  GTMSessionFetcherDownloadProgressBlock downloadProgressBlock
+//
+// If supplied by the server, the anticipated total download size is available
+// as [[myFetcher response] expectedContentLength] (and may be -1 for unknown
+// download sizes.)
+//
+//
+// Automatic retrying of fetches
+//
+// The fetcher can optionally create a timer and reattempt certain kinds of
+// fetch failures (status codes 408, request timeout; 502, gateway failure;
+// 503, service unavailable; 504, gateway timeout; networking errors
+// NSURLErrorTimedOut and NSURLErrorNetworkConnectionLost.)  The user may
+// set a retry selector to customize the type of errors which will be retried.
+//
+// Retries are done in an exponential-backoff fashion (that is, after 1 second,
+// 2, 4, 8, and so on.)
+//
+// Enabling automatic retries looks like this:
+//  myFetcher.retryEnabled = YES;
+//
+// With retries enabled, the completion callbacks are called only
+// when no more retries will be attempted. Calling the fetcher's stopFetching
+// method will terminate the retry timer, without the finished or failure
+// selectors being invoked.
+//
+// Optionally, the client may set the maximum retry interval:
+//  myFetcher.maxRetryInterval = 60.0; // in seconds; default is 60 seconds
+//                                     // for downloads, 600 for uploads
+//
+// Servers should never send a 400 or 500 status for errors that are retryable
+// by clients, as those values indicate permanent failures. In nearly all
+// cases, the default standard retry behavior is correct for clients, and no
+// custom client retry behavior is needed or appropriate. Servers that send
+// non-retryable status codes and expect the client to retry the request are
+// faulty.
+//
+// Still, the client may provide a block to determine if a status code or other
+// error should be retried. The block returns YES to set the retry timer or NO
+// to fail without additional fetch attempts.
+//
+// The retry method may return the |suggestedWillRetry| argument to get the
+// default retry behavior.  Server status codes are present in the
+// error argument, and have the domain kGTMSessionFetcherStatusDomain. The
+// user's method may look something like this:
+//
+//  myFetcher.retryBlock = ^(BOOL suggestedWillRetry, NSError *error,
+//                           GTMSessionFetcherRetryResponse response) {
+//    // Perhaps examine error.domain and error.code, or fetcher.retryCount
+//    //
+//    // Respond with YES to start the retry timer, NO to proceed to the failure
+//    // callback, or suggestedWillRetry to get default behavior for the
+//    // current error domain and code values.
+//    response(suggestedWillRetry);
+//  };
+
+#import <Foundation/Foundation.h>
+
+#if TARGET_OS_IPHONE
+#import <UIKit/UIKit.h>
+#endif
+#if TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif
+
+// By default it is stripped from non DEBUG builds. Developers can override
+// this in their project settings.
+#ifndef STRIP_GTM_FETCH_LOGGING
+#if !DEBUG
+#define STRIP_GTM_FETCH_LOGGING 1
+#else
+#define STRIP_GTM_FETCH_LOGGING 0
+#endif
+#endif
+
+// Logs in debug builds.
+#ifndef GTMSESSION_LOG_DEBUG
+#if DEBUG
+#define GTMSESSION_LOG_DEBUG(...) NSLog(__VA_ARGS__)
+#else
+#define GTMSESSION_LOG_DEBUG(...) \
+  do {                            \
+  } while (0)
+#endif
+#endif
+
+// Asserts in debug builds (or logs in debug builds if GTMSESSION_ASSERT_AS_LOG
+// or NS_BLOCK_ASSERTIONS are defined.)
+#ifndef GTMSESSION_ASSERT_DEBUG
+#if DEBUG && !defined(NS_BLOCK_ASSERTIONS) && !GTMSESSION_ASSERT_AS_LOG
+#undef GTMSESSION_ASSERT_AS_LOG
+#define GTMSESSION_ASSERT_AS_LOG 1
+#endif
+
+#if DEBUG && !GTMSESSION_ASSERT_AS_LOG
+#define GTMSESSION_ASSERT_DEBUG(...) NSAssert(__VA_ARGS__)
+#elif DEBUG
+#define GTMSESSION_ASSERT_DEBUG(pred, ...) \
+  if (!(pred)) {                           \
+    NSLog(__VA_ARGS__);                    \
+  }
+#else
+#define GTMSESSION_ASSERT_DEBUG(pred, ...) \
+  do {                                     \
+  } while (0)
+#endif
+#endif
+
+// Asserts in debug builds, logs in release builds (or logs in debug builds if
+// GTMSESSION_ASSERT_AS_LOG is defined.)
+#ifndef GTMSESSION_ASSERT_DEBUG_OR_LOG
+#if DEBUG && !GTMSESSION_ASSERT_AS_LOG
+#define GTMSESSION_ASSERT_DEBUG_OR_LOG(...) NSAssert(__VA_ARGS__)
+#else
+#define GTMSESSION_ASSERT_DEBUG_OR_LOG(pred, ...) \
+  if (!(pred)) {                                  \
+    NSLog(__VA_ARGS__);                           \
+  }
+#endif
+#endif
+
+// Macro useful for examining messages from NSURLSession during debugging.
+#if 0
+#define GTM_LOG_SESSION_DELEGATE(...) GTMSESSION_LOG_DEBUG(__VA_ARGS__)
+#else
+#define GTM_LOG_SESSION_DELEGATE(...)
+#endif
+
+// These will be removed in the near future, folks should move off of them.
+#ifndef GTM_NULLABLE
+#if __has_feature(nullability)  // Available starting in Xcode 6.3
+#define GTM_NULLABLE_TYPE __nullable
+#define GTM_NONNULL_TYPE __nonnull
+#define GTM_NULLABLE nullable
+#define GTM_NONNULL_DECL nonnull  // GTM_NONNULL is used by GTMDefines.h
+#define GTM_NULL_RESETTABLE null_resettable
+#define GTM_ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_BEGIN
+#define GTM_ASSUME_NONNULL_END NS_ASSUME_NONNULL_END
+#else
+#define GTM_NULLABLE_TYPE
+#define GTM_NONNULL_TYPE
+#define GTM_NULLABLE
+#define GTM_NONNULL_DECL
+#define GTM_NULL_RESETTABLE
+#define GTM_ASSUME_NONNULL_BEGIN
+#define GTM_ASSUME_NONNULL_END
+#endif  // __has_feature(nullability)
+#endif  // GTM_NULLABLE
+#ifndef GTM_DECLARE_GENERICS
+#if __has_feature(objc_generics)
+#define GTM_DECLARE_GENERICS 1
+#else
+#define GTM_DECLARE_GENERICS 0
+#endif
+#endif
+#ifndef GTM_NSArrayOf
+#if GTM_DECLARE_GENERICS
+#define GTM_NSArrayOf(value) NSArray<value>
+#define GTM_NSDictionaryOf(key, value) NSDictionary<key, value>
+#else
+#define GTM_NSArrayOf(value) NSArray
+#define GTM_NSDictionaryOf(key, value) NSDictionary
+#endif  // __has_feature(objc_generics)
+#endif  // GTM_NSArrayOf
+
+// For iOS, the fetcher can declare itself a background task to allow fetches
+// to finish when the app leaves the foreground.
+//
+// (This is unrelated to providing a background configuration, which allows
+// out-of-process uploads and downloads.)
+//
+// To disallow use of background tasks during fetches, the target should define
+// GTM_BACKGROUND_TASK_FETCHING to 0, or alternatively may set the
+// skipBackgroundTask property to YES.
+#if !defined(GTM_BACKGROUND_TASK_FETCHING) && \
+    (TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_MACCATALYST)
+#define GTM_BACKGROUND_TASK_FETCHING 1
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(GTMBridgeFetcher)
+// The bridge macros are deprecated, and should be replaced; GTMHTTPFetcher is no longer
+// supported and all code should switch to use GTMSessionFetcher types directly.
+#define GTMBridgeFetcher GTMSessionFetcher
+#define GTMBridgeFetcherService GTMSessionFetcherService
+#define GTMBridgeFetcherServiceProtocol GTMSessionFetcherServiceProtocol
+#define GTMBridgeAssertValidSelector GTMSessionFetcherAssertValidSelector
+#define GTMBridgeCookieStorage GTMSessionCookieStorage
+#define GTMBridgeCleanedUserAgentString GTMFetcherCleanedUserAgentString
+#define GTMBridgeSystemVersionString GTMFetcherSystemVersionString
+#define GTMBridgeApplicationIdentifier GTMFetcherApplicationIdentifier
+#define kGTMBridgeFetcherStatusDomain kGTMSessionFetcherStatusDomain
+#define kGTMBridgeFetcherStatusBadRequest GTMSessionFetcherStatusBadRequest
+#endif
+
+// When creating background sessions to perform out-of-process uploads and
+// downloads, on app launch any background sessions must be reconnected in
+// order to receive events that occurred while the app was not running.
+//
+// The fetcher will automatically attempt to recreate the sessions on app
+// start, but doing so reads from NSUserDefaults. This may have launch-time
+// performance impacts.
+//
+// To avoid launch performance impacts, on iPhone/iPad with iOS 13+ the
+// GTMSessionFetcher class will register for the app launch notification and
+// perform the reconnect then.
+//
+// Apps targeting Mac or older iOS SDKs can opt into the new behavior by defining
+// GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH=1.
+//
+// Apps targeting new SDKs can force the old behavior by defining
+// GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH = 0.
+#ifndef GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH
+// Default to the on-launch behavior for iOS 13+.
+#if TARGET_OS_IOS && defined(__IPHONE_13_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0
+#define GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH 1
+#else
+#define GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH 0
+#endif
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+// Notifications
+//
+// Fetch started and stopped, and fetch retry delay started and stopped.
+extern NSString *const kGTMSessionFetcherStartedNotification;
+extern NSString *const kGTMSessionFetcherStoppedNotification;
+extern NSString *const kGTMSessionFetcherRetryDelayStartedNotification;
+extern NSString *const kGTMSessionFetcherRetryDelayStoppedNotification;
+
+// Completion handler notification. This is intended for use by code capturing
+// and replaying fetch requests and results for testing. For fetches where
+// destinationFileURL or accumulateDataBlock is set for the fetcher, the data
+// will be nil for successful fetches.
+//
+// This notification is posted on the main thread.
+extern NSString *const kGTMSessionFetcherCompletionInvokedNotification;
+extern NSString *const kGTMSessionFetcherCompletionDataKey;
+extern NSString *const kGTMSessionFetcherCompletionErrorKey;
+
+// Constants for NSErrors created by the fetcher (excluding server status errors,
+// and error objects originating in the OS.)
+extern NSString *const kGTMSessionFetcherErrorDomain;
+
+// The fetcher turns server error status values (3XX, 4XX, 5XX) into NSErrors
+// with domain kGTMSessionFetcherStatusDomain.
+//
+// Any server response body data accompanying the status error is added to the
+// userInfo dictionary with key kGTMSessionFetcherStatusDataKey.
+extern NSString *const kGTMSessionFetcherStatusDomain;
+extern NSString *const kGTMSessionFetcherStatusDataKey;
+extern NSString *const kGTMSessionFetcherStatusDataContentTypeKey;
+
+// When a fetch fails with an error, these keys are included in the error userInfo
+// dictionary if retries were attempted.
+extern NSString *const kGTMSessionFetcherNumberOfRetriesDoneKey;
+extern NSString *const kGTMSessionFetcherElapsedIntervalWithRetriesKey;
+
+// Background session support requires access to NSUserDefaults.
+// If [NSUserDefaults standardUserDefaults] doesn't yield the correct NSUserDefaults for your usage,
+// ie for an App Extension, then implement this class/method to return the correct NSUserDefaults.
+// https://developer.apple.com/library/ios/documentation/General/Conceptual/ExtensibilityPG/ExtensionScenarios.html#//apple_ref/doc/uid/TP40014214-CH21-SW6
+@interface GTMSessionFetcherUserDefaultsFactory : NSObject
+
++ (NSUserDefaults *)fetcherUserDefaults;
+
+@end
+
+#ifdef __cplusplus
+}
+#endif
+
+typedef NS_ENUM(NSInteger, GTMSessionFetcherError) {
+  GTMSessionFetcherErrorDownloadFailed = -1,
+  GTMSessionFetcherErrorUploadChunkUnavailable = -2,
+  GTMSessionFetcherErrorBackgroundExpiration = -3,
+  GTMSessionFetcherErrorBackgroundFetchFailed = -4,
+  GTMSessionFetcherErrorInsecureRequest = -5,
+  GTMSessionFetcherErrorTaskCreationFailed = -6,
+};
+
+typedef NS_ENUM(NSInteger, GTMSessionFetcherStatus) {
+  // Standard http status codes.
+  GTMSessionFetcherStatusNotModified = 304,
+  GTMSessionFetcherStatusBadRequest = 400,
+  GTMSessionFetcherStatusUnauthorized = 401,
+  GTMSessionFetcherStatusForbidden = 403,
+  GTMSessionFetcherStatusPreconditionFailed = 412
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+@class GTMSessionCookieStorage;
+@class GTMSessionFetcher;
+
+// The configuration block is for modifying the NSURLSessionConfiguration only.
+// DO NOT change any fetcher properties in the configuration block.
+typedef void (^GTMSessionFetcherConfigurationBlock)(GTMSessionFetcher *fetcher,
+                                                    NSURLSessionConfiguration *configuration);
+typedef void (^GTMSessionFetcherSystemCompletionHandler)(void);
+typedef void (^GTMSessionFetcherCompletionHandler)(NSData *_Nullable data,
+                                                   NSError *_Nullable error);
+typedef void (^GTMSessionFetcherBodyStreamProviderResponse)(NSInputStream *bodyStream);
+typedef void (^GTMSessionFetcherBodyStreamProvider)(
+    GTMSessionFetcherBodyStreamProviderResponse response);
+typedef void (^GTMSessionFetcherDidReceiveResponseDispositionBlock)(
+    NSURLSessionResponseDisposition disposition);
+typedef void (^GTMSessionFetcherDidReceiveResponseBlock)(
+    NSURLResponse *response, GTMSessionFetcherDidReceiveResponseDispositionBlock dispositionBlock);
+typedef void (^GTMSessionFetcherChallengeDispositionBlock)(
+    NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *_Nullable credential);
+typedef void (^GTMSessionFetcherChallengeBlock)(
+    GTMSessionFetcher *fetcher, NSURLAuthenticationChallenge *challenge,
+    GTMSessionFetcherChallengeDispositionBlock dispositionBlock);
+typedef void (^GTMSessionFetcherWillRedirectResponse)(NSURLRequest *_Nullable redirectedRequest);
+typedef void (^GTMSessionFetcherWillRedirectBlock)(NSHTTPURLResponse *redirectResponse,
+                                                   NSURLRequest *redirectRequest,
+                                                   GTMSessionFetcherWillRedirectResponse response);
+typedef void (^GTMSessionFetcherAccumulateDataBlock)(NSData *_Nullable buffer);
+typedef void (^GTMSessionFetcherSimulateByteTransferBlock)(NSData *_Nullable buffer,
+                                                           int64_t bytesWritten,
+                                                           int64_t totalBytesWritten,
+                                                           int64_t totalBytesExpectedToWrite);
+typedef void (^GTMSessionFetcherReceivedProgressBlock)(int64_t bytesWritten,
+                                                       int64_t totalBytesWritten);
+typedef void (^GTMSessionFetcherDownloadProgressBlock)(int64_t bytesWritten,
+                                                       int64_t totalBytesWritten,
+                                                       int64_t totalBytesExpectedToWrite);
+typedef void (^GTMSessionFetcherSendProgressBlock)(int64_t bytesSent, int64_t totalBytesSent,
+                                                   int64_t totalBytesExpectedToSend);
+typedef void (^GTMSessionFetcherWillCacheURLResponseResponse)(
+    NSCachedURLResponse *_Nullable cachedResponse);
+typedef void (^GTMSessionFetcherWillCacheURLResponseBlock)(
+    NSCachedURLResponse *proposedResponse,
+    GTMSessionFetcherWillCacheURLResponseResponse responseBlock);
+typedef void (^GTMSessionFetcherRetryResponse)(BOOL shouldRetry);
+typedef void (^GTMSessionFetcherRetryBlock)(BOOL suggestedWillRetry, NSError *_Nullable error,
+                                            GTMSessionFetcherRetryResponse response);
+
+API_AVAILABLE(ios(10.0), macosx(10.12), tvos(10.0), watchos(6.0))
+typedef void (^GTMSessionFetcherMetricsCollectionBlock)(NSURLSessionTaskMetrics *metrics);
+
+typedef void (^GTMSessionFetcherTestResponse)(NSHTTPURLResponse *_Nullable response,
+                                              NSData *_Nullable data, NSError *_Nullable error);
+typedef void (^GTMSessionFetcherTestBlock)(GTMSessionFetcher *fetcherToTest,
+                                           GTMSessionFetcherTestResponse testResponse);
+
+void GTMSessionFetcherAssertValidSelector(id _Nullable obj, SEL _Nullable sel, ...);
+
+// Utility functions for applications self-identifying to servers via a
+// user-agent header
+
+// The "standard" user agent includes the application identifier, taken from the bundle,
+// followed by a space and the system version string. Pass nil to use +mainBundle as the source
+// of the bundle identifier.
+//
+// Applications may use this as a starting point for their own user agent strings, perhaps
+// with additional sections appended.  Use GTMFetcherCleanedUserAgentString() below to
+// clean up any string being added to the user agent.
+NSString *GTMFetcherStandardUserAgentString(NSBundle *_Nullable bundle);
+
+// Make a generic name and version for the current application, like
+// com.example.MyApp/1.2.3 relying on the bundle identifier and the
+// CFBundleShortVersionString or CFBundleVersion.
+//
+// The bundle ID may be overridden as the base identifier string by
+// adding to the bundle's Info.plist a "GTMUserAgentID" key.
+//
+// The application version may be overridden by adding to the bundle's
+// Info.plist a "GTMUserAgentVersion" key.
+//
+// If no bundle ID or override is available, the process name preceded
+// by "proc_" is used.
+NSString *GTMFetcherApplicationIdentifier(NSBundle *_Nullable bundle);
+
+// Make an identifier like "MacOSX/10.7.1" or "iPod_Touch/4.1 hw/iPod1_1"
+NSString *GTMFetcherSystemVersionString(void);
+
+// Make a parseable user-agent identifier from the given string, replacing whitespace
+// and commas with underscores, and removing other characters that may interfere
+// with parsing of the full user-agent string.
+//
+// For example, @"[My App]" would become @"My_App"
+NSString *GTMFetcherCleanedUserAgentString(NSString *str);
+
+// Grab the data from an input stream. Since streams cannot be assumed to be rewindable,
+// this may be destructive; the caller can try to rewind the stream (by setting the
+// NSStreamFileCurrentOffsetKey property) or can just use the NSData to make a new
+// NSInputStream. This function is intended to facilitate testing rather than be used in
+// production.
+//
+// This function operates synchronously on the current thread. Depending on how the
+// input stream is implemented, it may be appropriate to dispatch to a different
+// queue before calling this function.
+//
+// Failure is indicated by a returned data value of nil.
+NSData *_Nullable GTMDataFromInputStream(NSInputStream *inputStream, NSError **outError);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+// Completion handler passed to -[GTMFetcherDecoratorProtocol fetcherWillStart:completionHandler:].
+typedef void (^GTMFetcherDecoratorFetcherWillStartCompletionHandler)(NSURLRequest *_Nullable,
+                                                                     NSError *_Nullable);
+
+// Allows intercepting a request and optionally modifying it before the request (or a retry)
+// is sent. See `-[GTMSessionFetcherService addDecorator:]` and `-[GTMSessionFetcherService
+// removeDecorator:]`.
+//
+// Decorator methods must be thread-safe, as they might be invoked on any queue.
+@protocol GTMFetcherDecoratorProtocol <NSObject>
+
+// Invoked just before a fetcher's request starts.
+//
+// After the decorator's work is complete, the decorator must invoke `handler(request, error)`
+// either synchronously or asynchronously (on any queue).
+//
+// If no changes are to be made, pass `nil` for both `request` and `error`.
+//
+// Otherwise, if `error` is non-nil, then the fetcher is stopped with the given error, and any
+// further decorators' `-fetcherWillStart:completionHandler:` methods are not invoked.
+//
+// Otherwise, the decorator may use `[fetcher.request mutableCopy]`, make changes to the mutable
+// copy of the request, and pass the result to the handler via the `request` parameter.
+//
+// To distinguish the initial fetch from retries, the decorator can look at `fetcher.retryCount`.
+//
+// This method must not block the caller (e.g., performing synchronous I/O). Perform any blocking
+// work or I/O on a different queue, then invoke `handler` with the results after the blocking work
+// completes.
+- (void)fetcherWillStart:(GTMSessionFetcher *)fetcher
+       completionHandler:(GTMFetcherDecoratorFetcherWillStartCompletionHandler)handler;
+
+// Invoked just after a fetcher's request finishes (either on success or on failure).
+//
+// After the decorator's work is complete, the decorator must invoke `handler()` either
+// synchronously or asynchronously (on any queue).
+//
+// To access the result of the fetch, the decorator can look at `fetcher.response`.
+//
+// This method must not block the caller (e.g., performing synchronous I/O). Perform any blocking
+// work or I/O on a different queue, then invoke `handler` with the results after the blocking work
+// completes.
+- (void)fetcherDidFinish:(GTMSessionFetcher *)fetcher
+                withData:(nullable NSData *)data
+                   error:(nullable NSError *)error
+       completionHandler:(void (^)(void))handler;
+
+@end
+
+// This protocol allows abstract references to the fetcher service, primarily for
+// fetchers (which may be compiled without the fetcher service class present.)
+//
+// Apps should not need to use this protocol.
+@protocol GTMSessionFetcherServiceProtocol <NSObject>
+// This protocol allows us to call into the service without requiring
+// GTMSessionFetcherService sources in this project
+
+@property(atomic, strong) dispatch_queue_t callbackQueue;
+
+- (BOOL)fetcherShouldBeginFetching:(GTMSessionFetcher *)fetcher;
+- (void)fetcherDidCreateSession:(GTMSessionFetcher *)fetcher;
+- (void)fetcherDidBeginFetching:(GTMSessionFetcher *)fetcher;
+- (void)fetcherDidStop:(GTMSessionFetcher *)fetcher;
+
+- (GTMSessionFetcher *)fetcherWithRequest:(NSURLRequest *)request;
+- (BOOL)isDelayingFetcher:(GTMSessionFetcher *)fetcher;
+
+@property(atomic, assign) BOOL reuseSession;
+- (nullable NSURLSession *)session;
+- (nullable NSURLSession *)sessionForFetcherCreation;
+- (nullable id<NSURLSessionDelegate>)sessionDelegate;
+- (nullable NSDate *)stoppedAllFetchersDate;
+
+@property(atomic, readonly, strong, nullable) NSOperationQueue *delegateQueue;
+
+@optional
+// This property is optional, for now, to enable releasing the feature without breaking existing
+// code that fakes the service but doesn't implement this.
+@property(atomic, readonly, strong, nullable) NSArray<id<GTMFetcherDecoratorProtocol>> *decorators;
+
+@end  // @protocol GTMSessionFetcherServiceProtocol
+
+#ifndef GTM_FETCHER_AUTHORIZATION_PROTOCOL
+#define GTM_FETCHER_AUTHORIZATION_PROTOCOL 1
+@protocol GTMFetcherAuthorizationProtocol <NSObject>
+@required
+// This protocol allows us to call the authorizer without requiring its sources
+// in this project.
+- (void)authorizeRequest:(nullable NSMutableURLRequest *)request
+                delegate:(id)delegate
+       didFinishSelector:(SEL)sel;
+
+- (void)stopAuthorization;
+
+- (void)stopAuthorizationForRequest:(NSURLRequest *)request;
+
+- (BOOL)isAuthorizingRequest:(NSURLRequest *)request;
+
+- (BOOL)isAuthorizedRequest:(NSURLRequest *)request;
+
+@property(atomic, strong, readonly, nullable) NSString *userEmail;
+
+@optional
+
+// Indicate if authorization may be attempted. Even if this succeeds,
+// authorization may fail if the user's permissions have been revoked.
+@property(atomic, readonly) BOOL canAuthorize;
+
+// For development only, allow authorization of non-SSL requests, allowing
+// transmission of the bearer token unencrypted.
+@property(atomic, assign) BOOL shouldAuthorizeAllRequests;
+
+- (void)authorizeRequest:(nullable NSMutableURLRequest *)request
+       completionHandler:(void (^)(NSError *_Nullable error))handler;
+
+@property(atomic, weak, nullable) id<GTMSessionFetcherServiceProtocol> fetcherService;
+
+- (BOOL)primeForRefresh;
+
+@end
+#endif  // GTM_FETCHER_AUTHORIZATION_PROTOCOL
+
+#if GTM_BACKGROUND_TASK_FETCHING
+// A protocol for an alternative target for messages from GTMSessionFetcher to UIApplication.
+// Set the target using +[GTMSessionFetcher setSubstituteUIApplication:]
+@protocol GTMUIApplicationProtocol <NSObject>
+- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithName:(nullable NSString *)taskName
+                                        expirationHandler:(void (^__nullable)(void))handler;
+- (void)endBackgroundTask:(UIBackgroundTaskIdentifier)identifier;
+@end
+#endif
+
+#pragma mark -
+
+// GTMSessionFetcher objects are used for async retrieval of an http get or post
+//
+// See additional comments at the beginning of this file
+@interface GTMSessionFetcher : NSObject <NSURLSessionDelegate>
+
+// Create a fetcher
+//
+// fetcherWithRequest will return an autoreleased fetcher, but if
+// the connection is successfully created, the connection should retain the
+// fetcher for the life of the connection as well. So the caller doesn't have
+// to retain the fetcher explicitly unless they want to be able to cancel it.
++ (instancetype)fetcherWithRequest:(nullable NSURLRequest *)request;
+
+// Convenience methods that make a request, like +fetcherWithRequest
++ (instancetype)fetcherWithURL:(NSURL *)requestURL;
++ (instancetype)fetcherWithURLString:(NSString *)requestURLString;
+
+// Methods for creating fetchers to continue previous fetches.
++ (instancetype)fetcherWithDownloadResumeData:(NSData *)resumeData;
++ (nullable instancetype)fetcherWithSessionIdentifier:(NSString *)sessionIdentifier;
+
+// Returns an array of currently active fetchers for background sessions,
+// both restarted and newly created ones.
++ (NSArray<GTMSessionFetcher *> *)fetchersForBackgroundSessions;
+
+// Designated initializer.
+//
+// Applications should create fetchers with a "fetcherWith..." method on a fetcher
+// service or a class method, not with this initializer.
+//
+// The configuration should typically be nil. Applications needing to customize
+// the configuration may do so by setting the configurationBlock property.
+- (instancetype)initWithRequest:(nullable NSURLRequest *)request
+                  configuration:(nullable NSURLSessionConfiguration *)configuration;
+
+// The fetcher's request.  This may not be set after beginFetch has been invoked. The request
+// may change due to redirects.
+@property(atomic, strong, nullable) NSURLRequest *request;
+
+// Set a header field value on the request. Header field value changes will not
+// affect a fetch after the fetch has begun.
+- (void)setRequestValue:(nullable NSString *)value forHTTPHeaderField:(NSString *)field;
+
+// Data used for resuming a download task.
+@property(atomic, readonly, nullable) NSData *downloadResumeData;
+
+// The configuration; this must be set before the fetch begins. If no configuration is
+// set or inherited from the fetcher service, then the fetcher uses an ephemeral config.
+//
+// NOTE: This property should typically be nil. Applications needing to customize
+// the configuration should do so by setting the configurationBlock property.
+// That allows the fetcher to pick an appropriate base configuration, with the
+// application setting only the configuration properties it needs to customize.
+@property(atomic, strong, nullable) NSURLSessionConfiguration *configuration;
+
+// A block the client may use to customize the configuration used to create the session.
+//
+// This is called synchronously, either on the thread that begins the fetch or, during a retry,
+// on the main thread. The configuration block may be called repeatedly if multiple fetchers are
+// created.
+//
+// The configuration block is for modifying the NSURLSessionConfiguration only.
+// DO NOT change any fetcher properties in the configuration block. Fetcher properties
+// may be set in the fetcher service prior to fetcher creation, or on the fetcher prior
+// to invoking beginFetch.
+@property(atomic, copy, nullable) GTMSessionFetcherConfigurationBlock configurationBlock;
+
+// A session is created as needed by the fetcher.  A fetcher service object
+// may maintain sessions for multiple fetches to the same host.
+@property(atomic, strong, nullable) NSURLSession *session;
+
+// The task in flight.
+@property(atomic, readonly, nullable) NSURLSessionTask *sessionTask;
+
+// The background session identifier.
+@property(atomic, readonly, nullable) NSString *sessionIdentifier;
+
+// Indicates a fetcher created to finish a background session task.
+@property(atomic, readonly) BOOL wasCreatedFromBackgroundSession;
+
+// Indicates the client has committed to reconnecting this background session when
+// the app restarts. If this value is YES, the session fetcher will not automatically
+// call beginFetchWithCompletionHandler: on the restored fetcher on app start, and
+// the session will not handle system events until the client explicitly does.
+@property(atomic, assign) BOOL clientWillReconnectBackgroundSession;
+
+// Additional user-supplied data to encode into the session identifier. Since session identifier
+// length limits are unspecified, this should be kept small. Key names beginning with an underscore
+// are reserved for use by the fetcher.
+@property(atomic, strong, nullable) NSDictionary<NSString *, NSString *> *sessionUserInfo;
+
+// The human-readable description to be assigned to the task.
+@property(atomic, copy, nullable) NSString *taskDescription;
+
+// The priority assigned to the task, if any.  Use NSURLSessionTaskPriorityLow,
+// NSURLSessionTaskPriorityDefault, or NSURLSessionTaskPriorityHigh.
+@property(atomic, assign) float taskPriority;
+
+// The fetcher encodes information used to resume a session in the session identifier.
+// This method, intended for internal use returns the encoded information.  The sessionUserInfo
+// dictionary is stored as identifier metadata.
+- (nullable NSDictionary<NSString *, NSString *> *)sessionIdentifierMetadata;
+
+#if TARGET_OS_IPHONE && !TARGET_OS_WATCH
+// The app should pass to this method the completion handler passed in the app delegate method
+// application:handleEventsForBackgroundURLSession:completionHandler:
++ (void)application:(UIApplication *)application
+    handleEventsForBackgroundURLSession:(NSString *)identifier
+                      completionHandler:(GTMSessionFetcherSystemCompletionHandler)completionHandler;
+#endif
+
+// Indicate that a newly created session should be a background session.
+// A new session identifier will be created by the fetcher.
+//
+// Warning:  The only thing background sessions are for is rare download
+// of huge, batched files of data. And even just for those, there's a lot
+// of pain and hackery needed to get transfers to actually happen reliably
+// with background sessions.
+//
+// Don't try to upload or download in many background sessions, since the system
+// will impose an exponentially increasing time penalty to prevent the app from
+// getting too much background execution time.
+//
+// References:
+//
+//   "Moving to Fewer, Larger Transfers"
+//   https://forums.developer.apple.com/thread/14853
+//
+//   "NSURLSession’s Resume Rate Limiter"
+//   https://forums.developer.apple.com/thread/14854
+//
+//   "Background Session Task state persistence"
+//   https://forums.developer.apple.com/thread/11554
+//
+@property(atomic, assign) BOOL useBackgroundSession;
+
+// Indicates if the fetcher was started using a background session.
+@property(atomic, readonly, getter=isUsingBackgroundSession) BOOL usingBackgroundSession;
+
+// Indicates if uploads should use an upload task.  This is always set for file or stream-provider
+// bodies, but may be set explicitly for NSData bodies.
+@property(atomic, assign) BOOL useUploadTask;
+
+// Indicates that the fetcher is using a session that may be shared with other fetchers.
+@property(atomic, readonly) BOOL canShareSession;
+
+// By default, the fetcher allows only secure (https) schemes unless this
+// property is set, or the GTM_ALLOW_INSECURE_REQUESTS build flag is set.
+//
+// For example, during debugging when fetching from a development server that lacks SSL support,
+// this may be set to @[ @"http" ], or when the fetcher is used to retrieve local files,
+// this may be set to @[ @"file" ].
+//
+// This should be left as nil for release builds to avoid creating the opportunity for
+// leaking private user behavior and data.  If a server is providing insecure URLs
+// for fetching by the client app, report the problem as server security & privacy bug.
+//
+// For builds with the iOS 9/OS X 10.11 and later SDKs, this property is required only when
+// the app specifies NSAppTransportSecurity/NSAllowsArbitraryLoads in the main bundle's Info.plist.
+@property(atomic, copy, nullable) NSArray<NSString *> *allowedInsecureSchemes;
+
+// By default, the fetcher prohibits localhost requests unless this property is set,
+// or the GTM_ALLOW_INSECURE_REQUESTS build flag is set.
+//
+// For localhost requests, the URL scheme is not checked  when this property is set.
+//
+// For builds with the iOS 9/OS X 10.11 and later SDKs, this property is required only when
+// the app specifies NSAppTransportSecurity/NSAllowsArbitraryLoads in the main bundle's Info.plist.
+@property(atomic, assign) BOOL allowLocalhostRequest;
+
+// By default, the fetcher requires valid server certs.  This may be bypassed
+// temporarily for development against a test server with an invalid cert.
+@property(atomic, assign) BOOL allowInvalidServerCertificates;
+
+// Cookie storage object for this fetcher. If nil, the fetcher will use a static cookie
+// storage instance shared among fetchers. If this fetcher was created by a fetcher service
+// object, it will be set to use the service object's cookie storage. See Cookies section above for
+// the full discussion.
+//
+// Because as of Jan 2014 standalone instances of NSHTTPCookieStorage do not actually
+// store any cookies (Radar 15735276) we use our own subclass, GTMSessionCookieStorage,
+// to hold cookies in memory.
+@property(atomic, strong, nullable) NSHTTPCookieStorage *cookieStorage;
+
+// Setting the credential is optional; it is used if the connection receives
+// an authentication challenge.
+@property(atomic, strong, nullable) NSURLCredential *credential;
+
+// Setting the proxy credential is optional; it is used if the connection
+// receives an authentication challenge from a proxy.
+@property(atomic, strong, nullable) NSURLCredential *proxyCredential;
+
+// If body data, body file URL, or body stream provider is not set, then a GET request
+// method is assumed.
+@property(atomic, strong, nullable) NSData *bodyData;
+
+// File to use as the request body. This forces use of an upload task.
+@property(atomic, strong, nullable) NSURL *bodyFileURL;
+
+// Length of body to send, expected or actual.
+@property(atomic, readonly) int64_t bodyLength;
+
+// The body stream provider may be called repeatedly to provide a body.
+// Setting a body stream provider forces use of an upload task.
+@property(atomic, copy, nullable) GTMSessionFetcherBodyStreamProvider bodyStreamProvider;
+
+// Object to add authorization to the request, if needed.
+//
+// This may not be changed once beginFetch has been invoked.
+@property(atomic, strong, nullable) id<GTMFetcherAuthorizationProtocol> authorizer;
+
+// The service object that created and monitors this fetcher, if any.
+@property(atomic, strong) id<GTMSessionFetcherServiceProtocol> service;
+
+// The host, if any, used to classify this fetcher in the fetcher service.
+@property(atomic, copy, nullable) NSString *serviceHost;
+
+// The priority, if any, used for starting fetchers in the fetcher service.
+//
+// Lower values are higher priority; the default is 0, and values may
+// be negative or positive. This priority affects only the start order of
+// fetchers that are being delayed by a fetcher service when the running fetchers
+// exceeds the service's maxRunningFetchersPerHost.  A priority of NSIntegerMin will
+// exempt this fetcher from delay.
+@property(atomic, assign) NSInteger servicePriority;
+
+// The delegate's optional didReceiveResponse block may be used to inspect or alter
+// the session task response.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherDidReceiveResponseBlock didReceiveResponseBlock;
+
+// The delegate's optional challenge block may be used to inspect or alter
+// the session task challenge.
+//
+// If this block is not set, the fetcher's default behavior for the NSURLSessionTask
+// didReceiveChallenge: delegate method is to use the fetcher's respondToChallenge: method
+// which relies on the fetcher's credential and proxyCredential properties.
+//
+// Warning: This may be called repeatedly if the challenge fails. Check
+// challenge.previousFailureCount to identify repeated invocations.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherChallengeBlock challengeBlock;
+
+// The delegate's optional willRedirect block may be used to inspect or alter
+// the redirection.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherWillRedirectBlock willRedirectBlock;
+
+// The optional send progress block reports body bytes uploaded.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherSendProgressBlock sendProgressBlock;
+
+// The optional accumulate block may be set by clients wishing to accumulate data
+// themselves rather than let the fetcher append each buffer to an NSData.
+//
+// When this is called with nil data (such as on redirect) the client
+// should empty its accumulation buffer.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherAccumulateDataBlock accumulateDataBlock;
+
+// The optional received progress block may be used to monitor data
+// received from a data task.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherReceivedProgressBlock receivedProgressBlock;
+
+// The delegate's optional downloadProgress block may be used to monitor download
+// progress in writing to disk.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable) GTMSessionFetcherDownloadProgressBlock downloadProgressBlock;
+
+// The delegate's optional willCacheURLResponse block may be used to alter the cached
+// NSURLResponse. The user may prevent caching by passing nil to the block's response.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable)
+    GTMSessionFetcherWillCacheURLResponseBlock willCacheURLResponseBlock;
+
+// Enable retrying; see comments at the top of this file.  Setting
+// retryEnabled=YES resets the min and max retry intervals.
+@property(atomic, assign, getter=isRetryEnabled) BOOL retryEnabled;
+
+// Retry block is optional for retries.
+//
+// If present, this block should call the response block with YES to cause a retry or NO to end the
+// fetch.
+// See comments at the top of this file.
+@property(atomic, copy, nullable) GTMSessionFetcherRetryBlock retryBlock;
+
+// The optional block for collecting the metrics of the present session.
+//
+// This is called on the callback queue.
+@property(atomic, copy, nullable)
+    GTMSessionFetcherMetricsCollectionBlock metricsCollectionBlock API_AVAILABLE(
+        ios(10.0), macosx(10.12), tvos(10.0), watchos(6.0));
+
+// Retry intervals must be strictly less than maxRetryInterval, else
+// they will be limited to maxRetryInterval and no further retries will
+// be attempted.  Setting maxRetryInterval to 0.0 will reset it to the
+// default value, 60 seconds for downloads and 600 seconds for uploads.
+@property(atomic, assign) NSTimeInterval maxRetryInterval;
+
+// Starting retry interval.  Setting minRetryInterval to 0.0 will reset it
+// to a random value between 1.0 and 2.0 seconds.  Clients should normally not
+// set this except for unit testing.
+@property(atomic, assign) NSTimeInterval minRetryInterval;
+
+// Multiplier used to increase the interval between retries, typically 2.0.
+// Clients should not need to set this.
+@property(atomic, assign) double retryFactor;
+
+// Number of retries attempted.
+@property(atomic, readonly) NSUInteger retryCount;
+
+// Interval delay to precede next retry.
+@property(atomic, readonly) NSTimeInterval nextRetryInterval;
+
+#if GTM_BACKGROUND_TASK_FETCHING
+// Skip use of a UIBackgroundTask, thus requiring fetches to complete when the app is in the
+// foreground.
+//
+// Targets should define GTM_BACKGROUND_TASK_FETCHING to 0 to avoid use of a UIBackgroundTask
+// on iOS to allow fetches to complete in the background.  This property is available when
+// it's not practical to set the preprocessor define.
+@property(atomic, assign) BOOL skipBackgroundTask;
+#endif  // GTM_BACKGROUND_TASK_FETCHING
+
+// Begin fetching the request
+//
+// The delegate may optionally implement the callback or pass nil for the selector or handler.
+//
+// The delegate and all callback blocks are retained between the beginFetch call until after the
+// finish callback, or until the fetch is stopped.
+//
+// An error is passed to the callback for server statuses 300 or
+// higher, with the status stored as the error object's code.
+//
+// finishedSEL has a signature like:
+//   - (void)fetcher:(GTMSessionFetcher *)fetcher
+//  finishedWithData:(NSData *)data
+//             error:(NSError *)error;
+//
+// If the application has specified a destinationFileURL or an accumulateDataBlock
+// for the fetcher, the data parameter passed to the callback will be nil.
+
+- (void)beginFetchWithDelegate:(nullable id)delegate didFinishSelector:(nullable SEL)finishedSEL;
+
+- (void)beginFetchWithCompletionHandler:(nullable GTMSessionFetcherCompletionHandler)handler;
+
+// Returns YES if this fetcher is in the process of fetching a URL.
+@property(atomic, readonly, getter=isFetching) BOOL fetching;
+
+// Cancel the fetch of the request that's currently in progress.  The completion handler
+// will not be called.
+- (void)stopFetching;
+
+// A block to be called when the fetch completes.
+@property(atomic, copy, nullable) GTMSessionFetcherCompletionHandler completionHandler;
+
+// A block to be called if download resume data becomes available.
+@property(atomic, strong, nullable) void (^resumeDataBlock)(NSData *);
+
+// Return the status code from the server response.
+@property(atomic, readonly) NSInteger statusCode;
+
+// Return the http headers from the response.
+@property(atomic, strong, readonly, nullable) NSDictionary<NSString *, NSString *> *responseHeaders;
+
+// The response, once it's been received.
+@property(atomic, strong, readonly, nullable) NSURLResponse *response;
+
+// Bytes downloaded so far.
+@property(atomic, readonly) int64_t downloadedLength;
+
+// Buffer of currently-downloaded data, if available.
+@property(atomic, readonly, strong, nullable) NSData *downloadedData;
+
+// Local path to which the downloaded file will be moved.
+//
+// If a file already exists at the path, it will be overwritten.
+// Will create the enclosing folders if they are not present.
+@property(atomic, strong, nullable) NSURL *destinationFileURL;
+
+// The time this fetcher originally began fetching. This is useful as a time
+// barrier for ignoring irrelevant fetch notifications or callbacks.
+@property(atomic, strong, readonly, nullable) NSDate *initialBeginFetchDate;
+
+// userData is retained solely for the convenience of the client.
+@property(atomic, strong, nullable) id userData;
+
+// Stored property values are retained solely for the convenience of the client.
+@property(atomic, copy, nullable) NSDictionary<NSString *, id> *properties;
+
+- (void)setProperty:(nullable id)obj
+             forKey:(NSString *)key;  // Pass nil for obj to remove the property.
+- (nullable id)propertyForKey:(NSString *)key;
+
+- (void)addPropertiesFromDictionary:(NSDictionary<NSString *, id> *)dict;
+
+// Comments are useful for logging, so are strongly recommended for each fetcher.
+@property(atomic, copy, nullable) NSString *comment;
+
+- (void)setCommentWithFormat:(NSString *)format, ... NS_FORMAT_FUNCTION(1, 2);
+
+// Log of request and response, if logging is enabled
+@property(atomic, copy, nullable) NSString *log;
+
+// Callbacks are run on this queue. If none is supplied, the main queue is used.
+//
+// CAUTION: This block MUST be a serial queue. Setting a concurrent queue can result in callbacks
+// being dispatched concurrently, leading events to appear out-of-order.
+@property(atomic, strong, null_resettable) dispatch_queue_t callbackQueue;
+
+// The queue used internally by the session to invoke its delegate methods in the fetcher.
+//
+// Application callbacks are always called by the fetcher on the callbackQueue above,
+// not on this queue. Apps should generally not change this queue.
+//
+// The default delegate queue is the main queue.
+//
+// This value is ignored after the session has been created, so this
+// property should be set in the fetcher service rather in the fetcher as it applies
+// to a shared session.
+@property(atomic, strong, null_resettable) NSOperationQueue *sessionDelegateQueue;
+
+// DEPRECATED: Callers should use XCTestExpectation instead.
+//
+// Spin the run loop or sleep the thread, discarding events, until the fetch has completed.
+//
+// This is only for use in testing or in tools without a user interface.
+//
+// Note:  Synchronous fetches should never be used by shipping apps; they are
+// sufficient reason for rejection from the app store.
+//
+// Returns NO if timed out.
+- (BOOL)waitForCompletionWithTimeout:(NSTimeInterval)timeoutInSeconds
+    __deprecated_msg("Use XCTestExpectation instead");
+
+// Test block is optional for testing.
+//
+// If present, this block will cause the fetcher to skip starting the session, and instead
+// use the test block response values when calling the completion handler and delegate code.
+//
+// Test code can set this on the fetcher or on the fetcher service.  For testing libraries
+// that use a fetcher without exposing either the fetcher or the fetcher service, the global
+// method setGlobalTestBlock: will set the block for all fetchers that do not have a test
+// block set.
+//
+// The test code can pass nil for all response parameters to indicate that the fetch
+// should proceed.
+//
+// Applications can exclude test block support by setting GTM_DISABLE_FETCHER_TEST_BLOCK.
+@property(atomic, copy, nullable) GTMSessionFetcherTestBlock testBlock;
+
++ (void)setGlobalTestBlock:(nullable GTMSessionFetcherTestBlock)block;
+
+// When using the testBlock, |testBlockAccumulateDataChunkCount| is the desired number of chunks to
+// divide the response data into if the client has streaming enabled. The data will be divided up to
+// |testBlockAccumulateDataChunkCount| chunks; however, the exact amount may vary depending on the
+// size of the response data (e.g. a 1-byte response can only be divided into one chunk).
+@property(atomic, readwrite) NSUInteger testBlockAccumulateDataChunkCount;
+
+#if GTM_BACKGROUND_TASK_FETCHING
+// For testing or to override UIApplication invocations, apps may specify an alternative
+// target for messages to UIApplication.
++ (void)setSubstituteUIApplication:(nullable id<GTMUIApplicationProtocol>)substituteUIApplication;
++ (nullable id<GTMUIApplicationProtocol>)substituteUIApplication;
+#endif  // GTM_BACKGROUND_TASK_FETCHING
+
+// Exposed for testing.
++ (GTMSessionCookieStorage *)staticCookieStorage;
++ (BOOL)appAllowsInsecureRequests;
+
+#if STRIP_GTM_FETCH_LOGGING
+// If logging is stripped, provide a stub for the main method
+// for controlling logging.
++ (void)setLoggingEnabled:(BOOL)flag;
++ (BOOL)isLoggingEnabled;
+
+#else
+
+// These methods let an application log specific body text, such as the text description of a binary
+// request or response. The application should set the fetcher to defer response body logging until
+// the response has been received and the log response body has been set by the app. For example:
+//
+//   fetcher.logRequestBody = [binaryObject stringDescription];
+//   fetcher.deferResponseBodyLogging = YES;
+//   [fetcher beginFetchWithCompletionHandler:^(NSData *data, NSError *error) {
+//      if (error == nil) {
+//        fetcher.logResponseBody = [[[MyThing alloc] initWithData:data] stringDescription];
+//      }
+//      fetcher.deferResponseBodyLogging = NO;
+//   }];
+
+@property(atomic, copy, nullable) NSString *logRequestBody;
+@property(atomic, assign) BOOL deferResponseBodyLogging;
+@property(atomic, copy, nullable) NSString *logResponseBody;
+
+// Internal logging support.
+@property(atomic, readonly) NSData *loggedStreamData;
+@property(atomic, assign) BOOL hasLoggedError;
+@property(atomic, strong, nullable) NSURL *redirectedFromURL;
+- (void)appendLoggedStreamData:(NSData *)dataToAdd;
+- (void)clearLoggedStreamData;
+
+#endif  // STRIP_GTM_FETCH_LOGGING
+
+@end
+
+@interface GTMSessionFetcher (BackwardsCompatibilityOnly)
+// Clients using GTMSessionFetcher should set the cookie storage explicitly themselves;
+// this method is deprecated and will be removed soon.
+- (void)setCookieStorageMethod:(NSInteger)method
+    __deprecated_msg("Create an NSHTTPCookieStorage and set .cookieStorage directly.");
+@end
+
+// Until we can just instantiate NSHTTPCookieStorage for local use, we'll
+// implement all the public methods ourselves.  This stores cookies only in
+// memory.  Additional methods are provided for testing.
+//
+// iOS 9/OS X 10.11 added +[NSHTTPCookieStorage sharedCookieStorageForGroupContainerIdentifier:]
+// which may also be used to create cookie storage.
+@interface GTMSessionCookieStorage : NSHTTPCookieStorage
+
+// Add the array off cookies to the storage, replacing duplicates.
+// Also removes expired cookies from the storage.
+- (void)setCookies:(nullable NSArray<NSHTTPCookie *> *)cookies;
+
+- (void)removeAllCookies;
+
+@end
+
+// Macros to monitor synchronization blocks in debug builds.
+// These report problems using GTMSessionCheckDebug.
+//
+// GTMSessionMonitorSynchronized           Start monitoring a top-level-only
+//                                         @sync scope.
+// GTMSessionMonitorRecursiveSynchronized  Start monitoring a top-level or
+//                                         recursive @sync scope.
+// GTMSessionCheckSynchronized             Verify that the current execution
+//                                         is inside a @sync scope.
+// GTMSessionCheckNotSynchronized          Verify that the current execution
+//                                         is not inside a @sync scope.
+//
+// Example usage:
+//
+// - (void)myExternalMethod {
+//   @synchronized(self) {
+//     GTMSessionMonitorSynchronized(self)
+//
+// - (void)myInternalMethod {
+//   GTMSessionCheckSynchronized(self);
+//
+// - (void)callMyCallbacks {
+//   GTMSessionCheckNotSynchronized(self);
+//
+// GTMSessionCheckNotSynchronized is available for verifying the code isn't
+// in a deadlockable @sync state when posting notifications and invoking
+// callbacks. Don't use GTMSessionCheckNotSynchronized immediately before a
+// @sync scope; the normal recursiveness check of GTMSessionMonitorSynchronized
+// can catch those.
+
+#ifdef __OBJC__
+// If asserts are entirely no-ops, the synchronization monitor is just a bunch
+// of counting code that doesn't report exceptional circumstances in any way.
+// Only build the synchronization monitor code if NS_BLOCK_ASSERTIONS is not
+// defined or asserts are being logged instead.
+#if DEBUG && (!defined(NS_BLOCK_ASSERTIONS) || GTMSESSION_ASSERT_AS_LOG)
+#define __GTMSessionMonitorSynchronizedVariableInner(varname, counter) varname##counter
+#define __GTMSessionMonitorSynchronizedVariable(varname, counter) \
+  __GTMSessionMonitorSynchronizedVariableInner(varname, counter)
+
+#define GTMSessionMonitorSynchronized(obj)                                                         \
+  NS_VALID_UNTIL_END_OF_SCOPE id __GTMSessionMonitorSynchronizedVariable(__monitor, __COUNTER__) = \
+      [[GTMSessionSyncMonitorInternal alloc] initWithSynchronizationObject:obj                     \
+                                                            allowRecursive:NO                      \
+                                                              functionName:__func__]
+
+#define GTMSessionMonitorRecursiveSynchronized(obj)                                                \
+  NS_VALID_UNTIL_END_OF_SCOPE id __GTMSessionMonitorSynchronizedVariable(__monitor, __COUNTER__) = \
+      [[GTMSessionSyncMonitorInternal alloc] initWithSynchronizationObject:obj                     \
+                                                            allowRecursive:YES                     \
+                                                              functionName:__func__]
+
+#define GTMSessionCheckSynchronized(obj)                                             \
+  {                                                                                  \
+    GTMSESSION_ASSERT_DEBUG(                                                         \
+        [GTMSessionSyncMonitorInternal functionsHoldingSynchronizationOnObject:obj], \
+        @"GTMSessionCheckSynchronized(" #obj ") failed: not sync'd"                  \
+        @" on " #obj " in %s. Call stack:\n%@",                                      \
+        __func__, [NSThread callStackSymbols]);                                      \
+  }
+
+#define GTMSessionCheckNotSynchronized(obj)                                                    \
+  {                                                                                            \
+    GTMSESSION_ASSERT_DEBUG(                                                                   \
+        ![GTMSessionSyncMonitorInternal functionsHoldingSynchronizationOnObject:obj],          \
+        @"GTMSessionCheckNotSynchronized(" #obj ") failed: was sync'd"                         \
+        @" on " #obj " in %s by %@. Call stack:\n%@",                                          \
+        __func__, [GTMSessionSyncMonitorInternal functionsHoldingSynchronizationOnObject:obj], \
+        [NSThread callStackSymbols]);                                                          \
+  }
+
+// GTMSessionSyncMonitorInternal is a private class that keeps track of the
+// beginning and end of synchronized scopes.
+//
+// This class should not be used directly, but only via the
+// GTMSessionMonitorSynchronized macro.
+@interface GTMSessionSyncMonitorInternal : NSObject
+- (instancetype)initWithSynchronizationObject:(id)object
+                               allowRecursive:(BOOL)allowRecursive
+                                 functionName:(const char *)functionName;
+// Return the names of the functions that hold sync on the object, or nil if none.
++ (nullable NSArray *)functionsHoldingSynchronizationOnObject:(id)object;
+@end
+
+#else
+#define GTMSessionMonitorSynchronized(obj) \
+  do {                                     \
+  } while (0)
+#define GTMSessionMonitorRecursiveSynchronized(obj) \
+  do {                                              \
+  } while (0)
+#define GTMSessionCheckSynchronized(obj) \
+  do {                                   \
+  } while (0)
+#define GTMSessionCheckNotSynchronized(obj) \
+  do {                                      \
+  } while (0)
+#endif  // !DEBUG
+#endif  // __OBJC__
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.m b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.m
new file mode 100644
index 0000000..08d2a69
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcher.m	
@@ -0,0 +1,4758 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#import "GTMSessionFetcher.h"
+#if TARGET_OS_OSX && GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH
+// To reconnect background sessions on Mac outside +load requires importing and linking
+// AppKit to access the NSApplicationDidFinishLaunching symbol.
+#import <AppKit/AppKit.h>
+#endif
+
+#import <sys/utsname.h>
+
+#ifndef STRIP_GTM_FETCH_LOGGING
+#error GTMSessionFetcher headers should have defaulted this if it wasn't already defined.
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+NSString *const kGTMSessionFetcherStartedNotification = @"kGTMSessionFetcherStartedNotification";
+NSString *const kGTMSessionFetcherStoppedNotification = @"kGTMSessionFetcherStoppedNotification";
+NSString *const kGTMSessionFetcherRetryDelayStartedNotification =
+    @"kGTMSessionFetcherRetryDelayStartedNotification";
+NSString *const kGTMSessionFetcherRetryDelayStoppedNotification =
+    @"kGTMSessionFetcherRetryDelayStoppedNotification";
+
+NSString *const kGTMSessionFetcherCompletionInvokedNotification =
+    @"kGTMSessionFetcherCompletionInvokedNotification";
+NSString *const kGTMSessionFetcherCompletionDataKey = @"data";
+NSString *const kGTMSessionFetcherCompletionErrorKey = @"error";
+
+NSString *const kGTMSessionFetcherErrorDomain = @"com.google.GTMSessionFetcher";
+NSString *const kGTMSessionFetcherStatusDomain = @"com.google.HTTPStatus";
+NSString *const kGTMSessionFetcherStatusDataKey =
+    @"data";  // data returned with a kGTMSessionFetcherStatusDomain error
+NSString *const kGTMSessionFetcherStatusDataContentTypeKey = @"data_content_type";
+
+NSString *const kGTMSessionFetcherNumberOfRetriesDoneKey =
+    @"kGTMSessionFetcherNumberOfRetriesDoneKey";
+NSString *const kGTMSessionFetcherElapsedIntervalWithRetriesKey =
+    @"kGTMSessionFetcherElapsedIntervalWithRetriesKey";
+
+static NSString *const kGTMSessionIdentifierPrefix = @"com.google.GTMSessionFetcher";
+static NSString *const kGTMSessionIdentifierDestinationFileURLMetadataKey = @"_destURL";
+static NSString *const kGTMSessionIdentifierBodyFileURLMetadataKey = @"_bodyURL";
+static NSString *const kGTMSessionIdentifierClientReconnectMetadataKey = @"_clientWillReconnect";
+
+// The default max retry interview is 10 minutes for uploads (POST/PUT/PATCH),
+// 1 minute for downloads.
+static const NSTimeInterval kUnsetMaxRetryInterval = -1.0;
+static const NSTimeInterval kDefaultMaxDownloadRetryInterval = 60.0;
+static const NSTimeInterval kDefaultMaxUploadRetryInterval = 60.0 * 10.;
+
+// The maximum data length that can be loaded to the error userInfo
+static const int64_t kMaximumDownloadErrorDataLength = 20000;
+
+#ifdef GTMSESSION_PERSISTED_DESTINATION_KEY
+// Projects using unique class names should also define a unique persisted destination key.
+static NSString *const kGTMSessionFetcherPersistedDestinationKey =
+    GTMSESSION_PERSISTED_DESTINATION_KEY;
+#else
+static NSString *const kGTMSessionFetcherPersistedDestinationKey =
+    @"com.google.GTMSessionFetcher.downloads";
+#endif
+
+NS_ASSUME_NONNULL_END
+
+//
+// GTMSessionFetcher
+//
+
+#if 0
+#define GTM_LOG_BACKGROUND_SESSION(...) GTMSESSION_LOG_DEBUG(__VA_ARGS__)
+#else
+#define GTM_LOG_BACKGROUND_SESSION(...)
+#endif
+
+#ifndef GTM_TARGET_SUPPORTS_APP_TRANSPORT_SECURITY
+#define GTM_TARGET_SUPPORTS_APP_TRANSPORT_SECURITY 1
+#endif
+
+#if ((defined(TARGET_OS_MACCATALYST) && TARGET_OS_MACCATALYST) ||                                 \
+     (TARGET_OS_OSX && defined(__MAC_10_15) && __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_15) || \
+     (TARGET_OS_IOS && defined(__IPHONE_13_0) &&                                                  \
+      __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_13_0) ||                                       \
+     (TARGET_OS_WATCH && defined(__WATCHOS_6_0) &&                                                \
+      __WATCH_OS_VERSION_MIN_REQUIRED >= __WATCHOS_6_0) ||                                         \
+     (TARGET_OS_TV && defined(__TVOS_13_0) && __TVOS_VERSION_MIN_REQUIRED >= __TVOS_13_0))
+#define GTM_SDK_REQUIRES_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 1
+#define GTM_SDK_SUPPORTS_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 1
+#elif ((TARGET_OS_OSX && defined(__MAC_10_15) && __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_15) || \
+       (TARGET_OS_IOS && defined(__IPHONE_13_0) &&                                                 \
+        __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0) ||                                       \
+       (TARGET_OS_WATCH && defined(__WATCHOS_6_0) &&                                               \
+        __WATCH_OS_VERSION_MAX_ALLOWED >= __WATCHOS_6_0) ||                                         \
+       (TARGET_OS_TV && defined(__TVOS_13_0) && __TVOS_VERSION_MAX_ALLOWED >= __TVOS_13_0))
+#define GTM_SDK_REQUIRES_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 0
+#define GTM_SDK_SUPPORTS_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 1
+#else
+#define GTM_SDK_REQUIRES_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 0
+#define GTM_SDK_SUPPORTS_TLSMINIMUMSUPPORTEDPROTOCOLVERSION 0
+#endif
+
+#if ((defined(TARGET_OS_MACCATALYST) && TARGET_OS_MACCATALYST) ||                                 \
+     (TARGET_OS_OSX && defined(__MAC_10_15) && __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_15) || \
+     (TARGET_OS_IOS && defined(__IPHONE_13_0) &&                                                  \
+      __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_13_0) ||                                       \
+     (TARGET_OS_WATCH && defined(__WATCHOS_6_0) &&                                                \
+      __WATCH_OS_VERSION_MIN_REQUIRED >= __WATCHOS_6_0) ||                                         \
+     (TARGET_OS_TV && defined(__TVOS_13_0) && __TVOS_VERSION_MIN_REQUIRED >= __TVOS_13_0))
+#define GTM_SDK_REQUIRES_SECTRUSTEVALUATEWITHERROR 1
+#else
+#define GTM_SDK_REQUIRES_SECTRUSTEVALUATEWITHERROR 0
+#endif
+
+#if __has_attribute(swift_async)
+// Once Clang 13/Xcode 13 can be assumed, can switch to NS_SWIFT_DISABLE_ASYNC.
+#define GTM_SWIFT_DISABLE_ASYNC __attribute__((swift_async(none)))
+#else
+#define GTM_SWIFT_DISABLE_ASYNC
+#endif
+
+@interface GTMSessionFetcher ()
+
+@property(atomic, strong, readwrite, nullable) NSData *downloadedData;
+@property(atomic, strong, readwrite, nullable) NSData *downloadResumeData;
+
+#if GTM_BACKGROUND_TASK_FETCHING
+// Should always be accessed within an @synchronized(self).
+@property(assign, nonatomic) UIBackgroundTaskIdentifier backgroundTaskIdentifier;
+#endif
+
+@property(atomic, readwrite, getter=isUsingBackgroundSession) BOOL usingBackgroundSession;
+
+@end
+
+#if !GTMSESSION_BUILD_COMBINED_SOURCES
+@interface GTMSessionFetcher (GTMSessionFetcherLoggingInternal)
+- (void)logFetchWithError:(NSError *)error;
+- (void)logNowWithError:(nullable NSError *)error;
+- (NSInputStream *)loggedInputStreamForInputStream:(NSInputStream *)inputStream;
+- (GTMSessionFetcherBodyStreamProvider)loggedStreamProviderForStreamProvider:
+    (GTMSessionFetcherBodyStreamProvider)streamProvider;
+@end
+#endif  // !GTMSESSION_BUILD_COMBINED_SOURCES
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSTimeInterval InitialMinRetryInterval(void) {
+  return 1.0 + ((double)(arc4random_uniform(0x0FFFF)) / (double)0x0FFFF);
+}
+
+static BOOL IsLocalhost(NSString *_Nullable host) {
+  // We check if there's host, and then make the comparisons.
+  if (host == nil) return NO;
+  return ([host caseInsensitiveCompare:@"localhost"] == NSOrderedSame || [host isEqual:@"::1"] ||
+          [host isEqual:@"127.0.0.1"]);
+}
+
+static NSDictionary *_Nullable GTMErrorUserInfoForData(NSData *_Nullable data,
+                                                       NSDictionary *_Nullable responseHeaders) {
+  NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+
+  if (data.length > 0) {
+    userInfo[kGTMSessionFetcherStatusDataKey] = data;
+
+    NSString *contentType = responseHeaders[@"Content-Type"];
+    if (contentType) {
+      userInfo[kGTMSessionFetcherStatusDataContentTypeKey] = contentType;
+    }
+  }
+
+  return userInfo.count > 0 ? userInfo : nil;
+}
+
+static GTMSessionFetcherTestBlock _Nullable gGlobalTestBlock;
+
+@implementation GTMSessionFetcher {
+  NSMutableURLRequest *_request;  // after beginFetch, changed only in delegate callbacks
+  BOOL _useUploadTask;            // immutable after beginFetch
+  NSURL *_bodyFileURL;            // immutable after beginFetch
+  GTMSessionFetcherBodyStreamProvider _bodyStreamProvider;  // immutable after beginFetch
+  NSURLSession *_session;
+  BOOL _shouldInvalidateSession;  // immutable after beginFetch
+  NSURLSession *_sessionNeedingInvalidation;
+  NSURLSessionConfiguration *_configuration;
+  NSURLSessionTask *_sessionTask;
+  NSString *_taskDescription;
+  float _taskPriority;
+  NSURLResponse *_response;
+  NSString *_sessionIdentifier;
+  BOOL _wasCreatedFromBackgroundSession;
+  BOOL _clientWillReconnectBackgroundSession;
+  BOOL _didCreateSessionIdentifier;
+  NSString *_sessionIdentifierUUID;
+  BOOL _userRequestedBackgroundSession;
+  BOOL _usingBackgroundSession;
+  NSMutableData *_Nullable _downloadedData;
+  NSError *_downloadFinishedError;
+  NSData *_downloadResumeData;               // immutable after construction
+  NSData *_Nullable _downloadTaskErrorData;  // Data for when download task fails
+  NSURL *_destinationFileURL;
+  int64_t _downloadedLength;
+  NSURLCredential *_credential;       // username & password
+  NSURLCredential *_proxyCredential;  // credential supplied to proxy servers
+  BOOL _isStopNotificationNeeded;     // set when start notification has been sent
+  BOOL _isUsingTestBlock;  // set when a test block was provided (remains set when the block is
+                           // released)
+  id _userData;            // retained, if set by caller
+  NSMutableDictionary *_properties;  // more data retained for caller
+  dispatch_queue_t _callbackQueue;
+  dispatch_group_t _callbackGroup;   // read-only after creation
+  NSOperationQueue *_delegateQueue;  // immutable after beginFetch
+
+  id<GTMFetcherAuthorizationProtocol> _authorizer;  // immutable after beginFetch
+
+  // The service object that created and monitors this fetcher, if any.
+  id<GTMSessionFetcherServiceProtocol>
+      _service;  // immutable; set by the fetcher service upon creation
+  NSString *_serviceHost;
+  NSInteger _servicePriority;  // immutable after beginFetch
+  BOOL _hasStoppedFetching;    // counterpart to _initialBeginFetchDate
+  BOOL _userStoppedFetching;
+
+  BOOL _isRetryEnabled;  // user wants auto-retry
+  NSTimer *_retryTimer;
+  NSUInteger _retryCount;
+  NSTimeInterval _maxRetryInterval;  // default 60 (download) or 600 (upload) seconds
+  NSTimeInterval _minRetryInterval;  // random between 1 and 2 seconds
+  NSTimeInterval _retryFactor;       // default interval multiplier is 2
+  NSTimeInterval _lastRetryInterval;
+  NSDate *_initialBeginFetchDate;  // date that beginFetch was first invoked; immutable after
+                                   // initial beginFetch
+  NSDate *_initialRequestDate;     // date of first request to the target server (ignoring auth)
+  BOOL _hasAttemptedAuthRefresh;   // accessed only in shouldRetryNowForStatus:
+
+  NSString *_comment;  // comment for log
+  NSString *_log;
+#if !STRIP_GTM_FETCH_LOGGING
+  NSMutableData *_loggedStreamData;
+  NSURL *_redirectedFromURL;
+  NSString *_logRequestBody;
+  NSString *_logResponseBody;
+  BOOL _hasLoggedError;
+  BOOL _deferResponseBodyLogging;
+#endif
+}
+
+#if !GTMSESSION_UNIT_TESTING
++ (void)load {
+#if GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH && TARGET_OS_IPHONE
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc addObserver:self
+         selector:@selector(reconnectFetchersForBackgroundSessionsOnAppLaunch:)
+             name:UIApplicationDidFinishLaunchingNotification
+           object:nil];
+#elif GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH && TARGET_OS_OSX
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc addObserver:self
+         selector:@selector(reconnectFetchersForBackgroundSessionsOnAppLaunch:)
+             name:NSApplicationDidFinishLaunchingNotification
+           object:nil];
+#else
+  [self fetchersForBackgroundSessions];
+#endif
+}
+
++ (void)reconnectFetchersForBackgroundSessionsOnAppLaunch:(NSNotification *)notification {
+  // Give all other app-did-launch handlers a chance to complete before
+  // reconnecting the fetchers. Not doing this may lead to reconnecting
+  // before the app delegate has a chance to run.
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [self fetchersForBackgroundSessions];
+  });
+}
+#endif  // !GTMSESSION_UNIT_TESTING
+
++ (instancetype)fetcherWithRequest:(nullable NSURLRequest *)request {
+  return [[self alloc] initWithRequest:request configuration:nil];
+}
+
++ (instancetype)fetcherWithURL:(NSURL *)requestURL {
+  return [self fetcherWithRequest:[NSURLRequest requestWithURL:requestURL]];
+}
+
++ (instancetype)fetcherWithURLString:(NSString *)requestURLString {
+  return [self fetcherWithURL:(NSURL *)[NSURL URLWithString:requestURLString]];
+}
+
++ (instancetype)fetcherWithDownloadResumeData:(NSData *)resumeData {
+  GTMSessionFetcher *fetcher = [self fetcherWithRequest:nil];
+  fetcher.comment = @"Resuming download";
+  fetcher.downloadResumeData = resumeData;
+  return fetcher;
+}
+
++ (nullable instancetype)fetcherWithSessionIdentifier:(NSString *)sessionIdentifier {
+  GTMSESSION_ASSERT_DEBUG(sessionIdentifier != nil, @"Invalid session identifier");
+  NSMapTable *sessionIdentifierToFetcherMap = [self sessionIdentifierToFetcherMap];
+  GTMSessionFetcher *fetcher = [sessionIdentifierToFetcherMap objectForKey:sessionIdentifier];
+  if (!fetcher && [sessionIdentifier hasPrefix:kGTMSessionIdentifierPrefix]) {
+    fetcher = [self fetcherWithRequest:nil];
+    [fetcher setSessionIdentifier:sessionIdentifier];
+    [sessionIdentifierToFetcherMap setObject:fetcher forKey:sessionIdentifier];
+    fetcher->_wasCreatedFromBackgroundSession = YES;
+    [fetcher setCommentWithFormat:@"Resuming %@", fetcher && fetcher->_sessionIdentifierUUID
+                                                      ? fetcher->_sessionIdentifierUUID
+                                                      : @"?"];
+  }
+  return fetcher;
+}
+
++ (NSMapTable *)sessionIdentifierToFetcherMap {
+  // TODO: What if a service is involved in creating the fetcher? Currently, when re-creating
+  // fetchers, if a service was involved, it is not re-created. Should the service maintain a map?
+  static NSMapTable *gSessionIdentifierToFetcherMap = nil;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    gSessionIdentifierToFetcherMap = [NSMapTable strongToWeakObjectsMapTable];
+  });
+  return gSessionIdentifierToFetcherMap;
+}
+
+#if !GTM_ALLOW_INSECURE_REQUESTS
++ (BOOL)appAllowsInsecureRequests {
+  // If the main bundle Info.plist key NSAppTransportSecurity is present, and it specifies
+  // NSAllowsArbitraryLoads, then we need to explicitly enforce secure schemes.
+#if GTM_TARGET_SUPPORTS_APP_TRANSPORT_SECURITY
+  static BOOL allowsInsecureRequests;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSBundle *mainBundle = [NSBundle mainBundle];
+    NSDictionary *appTransportSecurity =
+        [mainBundle objectForInfoDictionaryKey:@"NSAppTransportSecurity"];
+    allowsInsecureRequests =
+        [[appTransportSecurity objectForKey:@"NSAllowsArbitraryLoads"] boolValue];
+  });
+  return allowsInsecureRequests;
+#else
+  // For builds targeting iOS 8 or 10.10 and earlier, we want to require fetcher
+  // security checks.
+  return YES;
+#endif  // GTM_TARGET_SUPPORTS_APP_TRANSPORT_SECURITY
+}
+#else   // GTM_ALLOW_INSECURE_REQUESTS
++ (BOOL)appAllowsInsecureRequests {
+  return YES;
+}
+#endif  // !GTM_ALLOW_INSECURE_REQUESTS
+
+- (instancetype)init {
+  return [self initWithRequest:nil configuration:nil];
+}
+
+- (instancetype)initWithRequest:(NSURLRequest *)request {
+  return [self initWithRequest:request configuration:nil];
+}
+
+- (instancetype)initWithRequest:(nullable NSURLRequest *)request
+                  configuration:(nullable NSURLSessionConfiguration *)configuration {
+  self = [super init];
+  if (self) {
+#if GTM_BACKGROUND_TASK_FETCHING
+    _backgroundTaskIdentifier = UIBackgroundTaskInvalid;
+#endif
+    _request = [request mutableCopy];
+    _configuration = configuration;
+
+    NSData *bodyData = request.HTTPBody;
+    if (bodyData) {
+      _bodyLength = (int64_t)bodyData.length;
+    } else {
+      _bodyLength = NSURLSessionTransferSizeUnknown;
+    }
+
+    _callbackQueue = dispatch_get_main_queue();
+    _callbackGroup = dispatch_group_create();
+    _delegateQueue = [NSOperationQueue mainQueue];
+
+    _minRetryInterval = InitialMinRetryInterval();
+    _maxRetryInterval = kUnsetMaxRetryInterval;
+
+    _taskPriority = -1.0f;  // Valid values if set are 0.0...1.0.
+
+    _testBlockAccumulateDataChunkCount = 1;
+
+#if !STRIP_GTM_FETCH_LOGGING
+    // Encourage developers to set the comment property or use
+    // setCommentWithFormat: by providing a default string.
+    _comment = @"(No fetcher comment set)";
+#endif
+  }
+  return self;
+}
+
+- (id)copyWithZone:(NSZone *)zone {
+  // disallow use of fetchers in a copy property
+  [self doesNotRecognizeSelector:_cmd];
+  return nil;
+}
+
+- (NSString *)description {
+  NSString *requestStr = self.request.URL.description;
+  if (requestStr.length == 0) {
+    if (self.downloadResumeData.length > 0) {
+      requestStr = @"<download resume data>";
+    } else if (_wasCreatedFromBackgroundSession) {
+      requestStr = @"<from bg session>";
+    } else {
+      requestStr = @"<no request>";
+    }
+  }
+  return [NSString stringWithFormat:@"%@ %p (%@)", [self class], self, requestStr];
+}
+
+- (void)dealloc {
+  GTMSESSION_ASSERT_DEBUG(!_isStopNotificationNeeded, @"unbalanced fetcher notification for %@",
+                          _request.URL);
+  [self forgetSessionIdentifierForFetcherWithoutSyncCheck];
+
+  // Note: if a session task or a retry timer was pending, then this instance
+  // would be retained by those so it wouldn't be getting dealloc'd,
+  // hence we don't need to stopFetch here
+}
+
+#pragma mark -
+
+// Begin fetching the URL (or begin a retry fetch).  The delegate is retained
+// for the duration of the fetch connection.
+
+- (void)beginFetchWithCompletionHandler:(nullable GTMSessionFetcherCompletionHandler)handler {
+  GTMSessionCheckNotSynchronized(self);
+  _completionHandler = [handler copy];
+
+  // The user may have called setDelegate: earlier if they want to use other
+  // delegate-style callbacks during the fetch; otherwise, the delegate is nil,
+  // which is fine.
+  [self beginFetchMayDelay:YES mayAuthorize:YES mayDecorate:YES];
+}
+
+// Begin fetching the URL for a retry fetch. The delegate and completion handler
+// are already provided, and do not need to be copied.
+- (void)beginFetchForRetry {
+  GTMSessionCheckNotSynchronized(self);
+  [self beginFetchMayDelay:YES mayAuthorize:YES mayDecorate:YES];
+}
+
+- (GTMSessionFetcherCompletionHandler)completionHandlerWithTarget:(nullable id)target
+                                                didFinishSelector:(nullable SEL)finishedSelector {
+  GTMSessionFetcherAssertValidSelector(target, finishedSelector, @encode(GTMSessionFetcher *),
+                                       @encode(NSData *), @encode(NSError *), 0);
+  GTMSessionFetcherCompletionHandler completionHandler = ^(NSData *data, NSError *error) {
+    if (target && finishedSelector) {
+      id selfArg = self;  // Placate ARC.
+      NSMethodSignature *sig = [target methodSignatureForSelector:finishedSelector];
+      NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:sig];
+      [invocation setSelector:(SEL)finishedSelector];
+      [invocation setTarget:target];
+      [invocation setArgument:&selfArg atIndex:2];
+      [invocation setArgument:&data atIndex:3];
+      [invocation setArgument:&error atIndex:4];
+      [invocation invoke];
+    }
+  };
+  return completionHandler;
+}
+
+- (void)beginFetchWithDelegate:(nullable id)target
+             didFinishSelector:(nullable SEL)finishedSelector {
+  GTMSessionCheckNotSynchronized(self);
+
+  GTMSessionFetcherCompletionHandler handler = [self completionHandlerWithTarget:target
+                                                               didFinishSelector:finishedSelector];
+  [self beginFetchWithCompletionHandler:handler];
+}
+
+- (void)beginFetchMayDelay:(BOOL)mayDelay
+              mayAuthorize:(BOOL)mayAuthorize
+               mayDecorate:(BOOL)mayDecorate {
+  // This is the internal entry point for re-starting fetches.
+  GTMSessionCheckNotSynchronized(self);
+
+  NSMutableURLRequest *fetchRequest =
+      _request;  // The request property is now externally immutable.
+  NSURL *fetchRequestURL = fetchRequest.URL;
+  NSString *priorSessionIdentifier = self.sessionIdentifier;
+
+  // A utility block for creating error objects when we fail to start the fetch.
+  NSError * (^beginFailureError)(NSInteger) = ^(NSInteger code) {
+    NSString *urlString = fetchRequestURL.absoluteString;
+    NSDictionary *userInfo =
+        @{NSURLErrorFailingURLStringErrorKey : (urlString ? urlString : @"(missing URL)")};
+    return [NSError errorWithDomain:kGTMSessionFetcherErrorDomain code:code userInfo:userInfo];
+  };
+
+  // Catch delegate queue maxConcurrentOperationCount values other than 1, particularly
+  // NSOperationQueueDefaultMaxConcurrentOperationCount (-1), to avoid the additional complexity
+  // of simultaneous or out-of-order delegate callbacks.
+  GTMSESSION_ASSERT_DEBUG(_delegateQueue.maxConcurrentOperationCount == 1,
+                          @"delegate queue %@ should support one concurrent operation, not %ld",
+                          _delegateQueue.name, (long)_delegateQueue.maxConcurrentOperationCount);
+
+  if (!_initialBeginFetchDate) {
+    // This ivar is set only here on the initial beginFetch so need not be synchronized.
+    _initialBeginFetchDate = [[NSDate alloc] init];
+  }
+
+  if (self.sessionTask != nil) {
+    // If cached fetcher returned through fetcherWithSessionIdentifier:, then it's
+    // already begun, but don't consider this a failure, since the user need not know this.
+    if (self.sessionIdentifier != nil) {
+      return;
+    }
+    GTMSESSION_ASSERT_DEBUG(NO, @"Fetch object %@ being reused; this should never happen", self);
+    [self failToBeginFetchWithError:beginFailureError(GTMSessionFetcherErrorDownloadFailed)];
+    return;
+  }
+
+  if (fetchRequestURL == nil && !_downloadResumeData && !priorSessionIdentifier) {
+    GTMSESSION_ASSERT_DEBUG(NO, @"Beginning a fetch requires a request with a URL");
+    [self failToBeginFetchWithError:beginFailureError(GTMSessionFetcherErrorDownloadFailed)];
+    return;
+  }
+
+  // We'll respect the user's request for a background session (unless this is
+  // an upload fetcher, which does its initial request foreground.)
+  self.usingBackgroundSession = self.useBackgroundSession && [self canFetchWithBackgroundSession];
+
+  NSURL *bodyFileURL = self.bodyFileURL;
+  if (bodyFileURL) {
+    NSError *fileCheckError;
+    if (![bodyFileURL checkResourceIsReachableAndReturnError:&fileCheckError]) {
+      // This assert fires when the file being uploaded no longer exists once
+      // the fetcher is ready to start the upload.
+      GTMSESSION_ASSERT_DEBUG_OR_LOG(0, @"Body file is unreachable: %@\n  %@", bodyFileURL.path,
+                                     fileCheckError);
+      [self failToBeginFetchWithError:fileCheckError];
+      return;
+    }
+  }
+
+  NSString *requestScheme = fetchRequestURL.scheme;
+  BOOL isDataRequest = [requestScheme isEqual:@"data"];
+  if (isDataRequest) {
+    // NSURLSession does not support data URLs in background sessions.
+#if DEBUG
+    if (priorSessionIdentifier || self.sessionIdentifier) {
+      GTMSESSION_LOG_DEBUG(@"Converting background to foreground session for %@", fetchRequest);
+    }
+#endif
+    // If priorSessionIdentifier is allowed to stay non-nil, a background session can
+    // still be created.
+    priorSessionIdentifier = nil;
+    [self setSessionIdentifierInternal:nil];
+    self.usingBackgroundSession = NO;
+  }
+
+#if GTM_ALLOW_INSECURE_REQUESTS
+  BOOL shouldCheckSecurity = NO;
+#else
+  BOOL shouldCheckSecurity =
+      (fetchRequestURL != nil && !isDataRequest && [[self class] appAllowsInsecureRequests]);
+#endif
+
+  if (shouldCheckSecurity) {
+    // Allow https only for requests, unless overridden by the client.
+    //
+    // Non-https requests may too easily be snooped, so we disallow them by default.
+    //
+    // file: and data: schemes are usually safe if they are hardcoded in the client or provided
+    // by a trusted source, but since it's fairly rare to need them, it's safest to make clients
+    // explicitly allow them.
+    BOOL isSecure =
+        requestScheme != nil && [requestScheme caseInsensitiveCompare:@"https"] == NSOrderedSame;
+    if (!isSecure) {
+      BOOL allowRequest = NO;
+      NSString *host = fetchRequestURL.host;
+
+      // Check schemes first.  A file scheme request may be allowed here, or as a localhost request.
+      for (NSString *allowedScheme in _allowedInsecureSchemes) {
+        if (requestScheme != nil &&
+            [requestScheme caseInsensitiveCompare:allowedScheme] == NSOrderedSame) {
+          allowRequest = YES;
+          break;
+        }
+      }
+      if (!allowRequest) {
+        // Check for localhost requests.  Security checks only occur for non-https requests, so
+        // this check won't happen for an https request to localhost.
+        BOOL isLocalhostRequest =
+            (host.length == 0 && [fetchRequestURL isFileURL]) || IsLocalhost(host);
+        if (isLocalhostRequest) {
+          if (self.allowLocalhostRequest) {
+            allowRequest = YES;
+          } else {
+            GTMSESSION_ASSERT_DEBUG(NO,
+                                    @"Fetch request for localhost but fetcher"
+                                    @" allowLocalhostRequest is not set: %@",
+                                    fetchRequestURL);
+          }
+        } else {
+          GTMSESSION_ASSERT_DEBUG(NO,
+                                  @"Insecure fetch request has a scheme (%@)"
+                                  @" not found in fetcher allowedInsecureSchemes (%@): %@",
+                                  requestScheme, _allowedInsecureSchemes ?: @" @[] ",
+                                  fetchRequestURL);
+        }
+      }
+
+      if (!allowRequest) {
+#if !DEBUG
+        NSLog(@"Insecure fetch disallowed for %@",
+              fetchRequestURL.description ?: @"nil request URL");
+#endif
+        [self failToBeginFetchWithError:beginFailureError(GTMSessionFetcherErrorInsecureRequest)];
+        return;
+      }
+    }  // !isSecure
+  }    // (requestURL != nil) && !isDataRequest
+
+  if (self.cookieStorage == nil) {
+    self.cookieStorage = [[self class] staticCookieStorage];
+  }
+
+  BOOL isRecreatingSession = (self.sessionIdentifier != nil) && (fetchRequest == nil);
+
+  self.canShareSession = (_service != nil) && !isRecreatingSession && !self.usingBackgroundSession;
+
+  if (!self.session && self.canShareSession) {
+    self.session = [_service sessionForFetcherCreation];
+    // If _session is nil, then the service's session creation semaphore will block
+    // until this fetcher invokes fetcherDidCreateSession: below, so this *must* invoke
+    // that method, even if the session fails to be created.
+  }
+
+  if (!self.session) {
+    // Create a session.
+    if (!_configuration) {
+      if (priorSessionIdentifier || self.usingBackgroundSession) {
+        NSString *sessionIdentifier = priorSessionIdentifier;
+        if (!sessionIdentifier) {
+          sessionIdentifier = [self createSessionIdentifierWithMetadata:nil];
+        }
+        NSMapTable *sessionIdentifierToFetcherMap = [[self class] sessionIdentifierToFetcherMap];
+        [sessionIdentifierToFetcherMap setObject:self forKey:self.sessionIdentifier];
+
+        _configuration = [NSURLSessionConfiguration
+            backgroundSessionConfigurationWithIdentifier:sessionIdentifier];
+        self.usingBackgroundSession = YES;
+        self.canShareSession = NO;
+      } else {
+        _configuration = [NSURLSessionConfiguration ephemeralSessionConfiguration];
+      }
+#if !GTM_ALLOW_INSECURE_REQUESTS
+#if GTM_SDK_REQUIRES_TLSMINIMUMSUPPORTEDPROTOCOLVERSION
+      _configuration.TLSMinimumSupportedProtocolVersion = tls_protocol_version_TLSv12;
+#elif GTM_SDK_SUPPORTS_TLSMINIMUMSUPPORTEDPROTOCOLVERSION
+      if (@available(iOS 13, tvOS 13, watchOS 6, macOS 10.15, *)) {
+        _configuration.TLSMinimumSupportedProtocolVersion = tls_protocol_version_TLSv12;
+      } else {
+        _configuration.TLSMinimumSupportedProtocol = kTLSProtocol12;
+      }
+#else
+      _configuration.TLSMinimumSupportedProtocol = kTLSProtocol12;
+#endif  // GTM_SDK_REQUIRES_TLSMINIMUMSUPPORTEDPROTOCOLVERSION
+#endif
+    }  // !_configuration
+    _configuration.HTTPCookieStorage = self.cookieStorage;
+
+    if (_configurationBlock) {
+      _configurationBlock(self, _configuration);
+    }
+
+    id<NSURLSessionDelegate> delegate = [_service sessionDelegate];
+    if (!delegate || !self.canShareSession) {
+      delegate = self;
+    }
+    self.session = [NSURLSession sessionWithConfiguration:_configuration
+                                                 delegate:delegate
+                                            delegateQueue:self.sessionDelegateQueue];
+    GTMSESSION_ASSERT_DEBUG(self.session, @"Couldn't create session");
+
+    // Tell the service about the session created by this fetcher.  This also signals the
+    // service's semaphore to allow other fetchers to request this session.
+    [_service fetcherDidCreateSession:self];
+
+    // If this assertion fires, the client probably tried to use a session identifier that was
+    // already used. The solution is to make the client use a unique identifier (or better yet let
+    // the session fetcher assign the identifier).
+    GTMSESSION_ASSERT_DEBUG(self.session.delegate == delegate, @"Couldn't assign delegate.");
+
+    if (self.session) {
+      BOOL isUsingSharedDelegate = (delegate != self);
+      if (!isUsingSharedDelegate) {
+        _shouldInvalidateSession = YES;
+      }
+    }
+  }
+
+  if (isRecreatingSession) {
+    _shouldInvalidateSession = YES;
+
+    // Let's make sure there are tasks still running or if not that we get a callback from a
+    // completed one; otherwise, we assume the tasks failed.
+    // This is the observed behavior perhaps 25% of the time within the Simulator running 7.0.3 on
+    // exiting the app after starting an upload and relaunching the app if we manage to relaunch
+    // after the task has completed, but before the system relaunches us in the background.
+    [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks,
+                                                  NSArray *downloadTasks) {
+      if (dataTasks.count == 0 && uploadTasks.count == 0 && downloadTasks.count == 0) {
+        double const kDelayInSeconds = 1.0;  // We should get progress indication or completion soon
+        dispatch_time_t checkForFeedbackDelay =
+            dispatch_time(DISPATCH_TIME_NOW, (int64_t)(kDelayInSeconds * NSEC_PER_SEC));
+        dispatch_after(checkForFeedbackDelay, dispatch_get_main_queue(), ^{
+          if (!self.sessionTask && !fetchRequest) {
+            // If our task and/or request haven't been restored, then we assume task feedback lost.
+            [self removePersistedBackgroundSessionFromDefaults];
+            NSError *sessionError =
+                [NSError errorWithDomain:kGTMSessionFetcherErrorDomain
+                                    code:GTMSessionFetcherErrorBackgroundFetchFailed
+                                userInfo:nil];
+            [self failToBeginFetchWithError:sessionError];
+          }
+        });
+      }
+    }];
+    return;
+  }
+
+  self.downloadedData = nil;
+  self.downloadedLength = 0;
+
+  if (_servicePriority == NSIntegerMin) {
+    mayDelay = NO;
+  }
+  if (mayDelay && _service) {
+    BOOL shouldFetchNow = [_service fetcherShouldBeginFetching:self];
+    if (!shouldFetchNow) {
+      // The fetch is deferred, but will happen later.
+      //
+      // If this session is held by the fetcher service, clear the session now so that we don't
+      // assume it's still valid after the fetcher is restarted.
+      if (self.canShareSession) {
+        self.session = nil;
+      }
+      return;
+    }
+  }
+
+  NSString *effectiveHTTPMethod = [fetchRequest valueForHTTPHeaderField:@"X-HTTP-Method-Override"];
+  if (effectiveHTTPMethod == nil) {
+    effectiveHTTPMethod = fetchRequest.HTTPMethod;
+  }
+  BOOL isEffectiveHTTPGet = (effectiveHTTPMethod == nil || [effectiveHTTPMethod isEqual:@"GET"]);
+
+  BOOL needsUploadTask = (self.useUploadTask || self.bodyFileURL || self.bodyStreamProvider);
+  if (_bodyData || self.bodyStreamProvider || fetchRequest.HTTPBodyStream) {
+    if (isEffectiveHTTPGet) {
+      fetchRequest.HTTPMethod = @"POST";
+      isEffectiveHTTPGet = NO;
+    }
+
+    if (_bodyData) {
+      if (!needsUploadTask) {
+        fetchRequest.HTTPBody = _bodyData;
+      }
+#if !STRIP_GTM_FETCH_LOGGING
+    } else if (fetchRequest.HTTPBodyStream) {
+      if ([self respondsToSelector:@selector(loggedInputStreamForInputStream:)]) {
+        fetchRequest.HTTPBodyStream =
+            [self performSelector:@selector(loggedInputStreamForInputStream:)
+                       withObject:fetchRequest.HTTPBodyStream];
+      }
+#endif
+    }
+  }
+
+  // We authorize after setting up the http method and body in the request
+  // because OAuth 1 may need to sign the request body
+  if (mayAuthorize && _authorizer && !isDataRequest) {
+    BOOL isAuthorized = [_authorizer isAuthorizedRequest:fetchRequest];
+    if (!isAuthorized) {
+      // Authorization needed.
+      //
+      // If this session is held by the fetcher service, clear the session now so that we don't
+      // assume it's still valid after authorization completes.
+      if (self.canShareSession) {
+        self.session = nil;
+      }
+
+      // Authorizing the request will recursively call this beginFetch:mayDelay:
+      // or failToBeginFetchWithError:.
+      [self authorizeRequest];
+      return;
+    }
+  }
+
+  if (mayDecorate && [_service respondsToSelector:@selector(decorators)]) {
+    NSArray<id<GTMFetcherDecoratorProtocol>> *decorators = _service.decorators;
+    if (decorators.count) {
+      // If this session is held by the fetcher service, clear the session now so that we don't
+      // assume it's still valid after decoration completes.
+      //
+      // The service will still hold on to the session, so as long as decoration doesn't take more
+      // than 30 seconds since the last request, the service's session will be re-used when the
+      // fetch actually starts.
+      if (self.canShareSession) {
+        self.session = nil;
+      }
+      [self applyDecoratorsAtRequestWillStart:decorators startingAtIndex:0];
+      return;
+    }
+  }
+
+  // set the default upload or download retry interval, if necessary
+  if ([self isRetryEnabled] && self.maxRetryInterval <= 0) {
+    if (isEffectiveHTTPGet || [effectiveHTTPMethod isEqual:@"HEAD"]) {
+      [self setMaxRetryInterval:kDefaultMaxDownloadRetryInterval];
+    } else {
+      [self setMaxRetryInterval:kDefaultMaxUploadRetryInterval];
+    }
+  }
+
+  // finally, start the connection
+  NSURLSessionTask *newSessionTask;
+  BOOL needsDataAccumulator = NO;
+  if (_downloadResumeData) {
+    newSessionTask = [_session downloadTaskWithResumeData:_downloadResumeData];
+    GTMSESSION_ASSERT_DEBUG_OR_LOG(
+        newSessionTask, @"Failed downloadTaskWithResumeData for %@, resume data %lu bytes",
+        _session, (unsigned long)_downloadResumeData.length);
+  } else if (_destinationFileURL && !isDataRequest) {
+    newSessionTask = [_session downloadTaskWithRequest:fetchRequest];
+    GTMSESSION_ASSERT_DEBUG_OR_LOG(newSessionTask, @"Failed downloadTaskWithRequest for %@, %@",
+                                   _session, fetchRequest);
+  } else if (needsUploadTask) {
+    if (bodyFileURL) {
+      newSessionTask = [_session uploadTaskWithRequest:fetchRequest fromFile:bodyFileURL];
+      GTMSESSION_ASSERT_DEBUG_OR_LOG(newSessionTask,
+                                     @"Failed uploadTaskWithRequest for %@, %@, file %@", _session,
+                                     fetchRequest, bodyFileURL.path);
+    } else if (self.bodyStreamProvider) {
+      newSessionTask = [_session uploadTaskWithStreamedRequest:fetchRequest];
+      GTMSESSION_ASSERT_DEBUG_OR_LOG(newSessionTask,
+                                     @"Failed uploadTaskWithStreamedRequest for %@, %@", _session,
+                                     fetchRequest);
+    } else {
+      GTMSESSION_ASSERT_DEBUG_OR_LOG(_bodyData != nil, @"Upload task needs body data, %@",
+                                     fetchRequest);
+      newSessionTask = [_session uploadTaskWithRequest:fetchRequest
+                                              fromData:(NSData *_Nonnull)_bodyData];
+      GTMSESSION_ASSERT_DEBUG_OR_LOG(
+          newSessionTask, @"Failed uploadTaskWithRequest for %@, %@, body data %lu bytes", _session,
+          fetchRequest, (unsigned long)_bodyData.length);
+    }
+    needsDataAccumulator = YES;
+  } else {
+    newSessionTask = [_session dataTaskWithRequest:fetchRequest];
+    needsDataAccumulator = YES;
+    GTMSESSION_ASSERT_DEBUG_OR_LOG(newSessionTask, @"Failed dataTaskWithRequest for %@, %@",
+                                   _session, fetchRequest);
+  }
+  self.sessionTask = newSessionTask;
+
+  if (!newSessionTask) {
+    // We shouldn't get here; if we're here, an earlier assertion should have fired to explain
+    // which session task creation failed.
+    [self failToBeginFetchWithError:beginFailureError(GTMSessionFetcherErrorTaskCreationFailed)];
+    return;
+  }
+
+  if (needsDataAccumulator && _accumulateDataBlock == nil) {
+    self.downloadedData = [NSMutableData data];
+  }
+  if (_taskDescription) {
+    newSessionTask.taskDescription = _taskDescription;
+  }
+  if (_taskPriority >= 0) {
+    newSessionTask.priority = _taskPriority;
+  }
+
+#if GTM_DISABLE_FETCHER_TEST_BLOCK
+  GTMSESSION_ASSERT_DEBUG(_testBlock == nil && gGlobalTestBlock == nil, @"test blocks disabled");
+  _testBlock = nil;
+#else
+  if (!_testBlock) {
+    if (gGlobalTestBlock) {
+      // Note that the test block may pass nil for all of its response parameters,
+      // indicating that the fetch should actually proceed. This is useful when the
+      // global test block has been set, and the app is only testing a specific
+      // fetcher.  The block simulation code will then resume the task.
+      _testBlock = gGlobalTestBlock;
+    }
+  }
+  _isUsingTestBlock = (_testBlock != nil);
+#endif  // GTM_DISABLE_FETCHER_TEST_BLOCK
+
+#if GTM_BACKGROUND_TASK_FETCHING
+  id<GTMUIApplicationProtocol> app = [[self class] fetcherUIApplication];
+  // Background tasks seem to interfere with out-of-process uploads and downloads.
+  if (app && !self.skipBackgroundTask && !self.usingBackgroundSession) {
+    // Tell UIApplication that we want to continue even when the app is in the
+    // background.
+#if DEBUG
+    NSString *bgTaskName =
+        [NSString stringWithFormat:@"%@-%@", [self class], fetchRequest.URL.host];
+#else
+    NSString *bgTaskName = @"GTMSessionFetcher";
+#endif
+    // Since a request can be started from any thread, we also have to ensure the
+    // variable for accessing it is safe across the initial thread and the handler
+    // (incase it gets failed immediately from the app already heading into the
+    // background).
+    __block UIBackgroundTaskIdentifier guardedTaskID = UIBackgroundTaskInvalid;
+    UIBackgroundTaskIdentifier returnedTaskID =
+        [app beginBackgroundTaskWithName:bgTaskName
+                       expirationHandler:^{
+                         // Background task expiration callback - this block is always invoked by
+                         // UIApplication on the main thread.
+                         UIBackgroundTaskIdentifier localTaskID;
+                         @synchronized(self) {
+                           localTaskID = guardedTaskID;
+                         }
+                         if (localTaskID != UIBackgroundTaskInvalid) {
+                           @synchronized(self) {
+                             if (localTaskID == self.backgroundTaskIdentifier) {
+                               self.backgroundTaskIdentifier = UIBackgroundTaskInvalid;
+                             }
+                           }
+                           [app endBackgroundTask:localTaskID];
+                         }
+                       }];
+    @synchronized(self) {
+      guardedTaskID = returnedTaskID;
+      self.backgroundTaskIdentifier = returnedTaskID;
+    }
+  }
+#endif
+
+  if (!_initialRequestDate) {
+    _initialRequestDate = [[NSDate alloc] init];
+  }
+
+  // We don't expect to reach here even on retry or auth until a stop notification has been sent
+  // for the previous task, but we should ensure that we don't unbalance that.
+  GTMSESSION_ASSERT_DEBUG(!_isStopNotificationNeeded, @"Start notification without a prior stop");
+  [self sendStopNotificationIfNeeded];
+
+  [self addPersistedBackgroundSessionToDefaults];
+
+  [self setStopNotificationNeeded:YES];
+
+  [self postNotificationOnMainThreadWithName:kGTMSessionFetcherStartedNotification
+                                    userInfo:nil
+                                requireAsync:NO];
+
+  // The service needs to know our task if it is serving as NSURLSession delegate.
+  [_service fetcherDidBeginFetching:self];
+
+  if (_testBlock) {
+#if !GTM_DISABLE_FETCHER_TEST_BLOCK
+    [self simulateFetchForTestBlock];
+#endif
+  } else {
+    // We resume the session task after posting the notification since the
+    // delegate callbacks may happen immediately if the fetch is started off
+    // the main thread or the session delegate queue is on a background thread,
+    // and we don't want to post a start notification after a premature finish
+    // of the session task.
+    [newSessionTask resume];
+  }
+}
+
+NSData *_Nullable GTMDataFromInputStream(NSInputStream *inputStream, NSError **outError) {
+  NSMutableData *data = [NSMutableData data];
+
+  [inputStream open];
+  NSInteger numberOfBytesRead = 0;
+  while ([inputStream hasBytesAvailable]) {
+    uint8_t buffer[512];
+    numberOfBytesRead = [inputStream read:buffer maxLength:sizeof(buffer)];
+    if (numberOfBytesRead > 0) {
+      [data appendBytes:buffer length:(NSUInteger)numberOfBytesRead];
+    } else {
+      break;
+    }
+  }
+  [inputStream close];
+  NSError *streamError = inputStream.streamError;
+
+  if (streamError) {
+    data = nil;
+  }
+  if (outError) {
+    *outError = streamError;
+  }
+  return data;
+}
+
+#if !GTM_DISABLE_FETCHER_TEST_BLOCK
+
+- (void)simulateFetchForTestBlock {
+  // This is invoked on the same thread as the beginFetch method was.
+  //
+  // Callbacks will all occur on the callback queue.
+  _testBlock(self, ^(NSURLResponse *response, NSData *responseData, NSError *error) {
+    // Callback from test block.
+    if (response == nil && responseData == nil && error == nil) {
+      // Assume the fetcher should execute rather than be tested.
+      self->_testBlock = nil;
+      self->_isUsingTestBlock = NO;
+      [self->_sessionTask resume];
+      return;
+    }
+
+    GTMSessionFetcherBodyStreamProvider bodyStreamProvider = self.bodyStreamProvider;
+    if (bodyStreamProvider) {
+      bodyStreamProvider(^(NSInputStream *bodyStream) {
+        // Read from the input stream into an NSData buffer.  We'll drain the stream
+        // explicitly on a background queue.
+        [self
+            invokeOnCallbackQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0)
+                 afterUserStopped:NO
+                            block:^{
+                              NSError *streamError;
+                              NSData *streamedData =
+                                  GTMDataFromInputStream(bodyStream, &streamError);
+
+                              dispatch_async(dispatch_get_main_queue(), ^{
+                                // Continue callbacks on the main thread, since serial behavior
+                                // is more reliable for tests.
+                                [self
+                                    simulateDataCallbacksForTestBlockWithBodyData:streamedData
+                                                                         response:response
+                                                                     responseData:responseData
+                                                                            error:
+                                                                                (error
+                                                                                     ?: streamError)];
+                              });
+                            }];
+      });
+    } else {
+      // No input stream; use the supplied data or file URL.
+      NSURL *bodyFileURL = self.bodyFileURL;
+      if (bodyFileURL) {
+        NSError *readError;
+        self->_bodyData = [NSData dataWithContentsOfURL:bodyFileURL
+                                                options:NSDataReadingMappedIfSafe
+                                                  error:&readError];
+        error = readError;
+      }
+
+      // No stream provider.
+
+      // In real fetches, nothing happens until the run loop spins, so apps have leeway to
+      // set callbacks after they call beginFetch. We'll mirror that fetcher behavior by
+      // delaying callbacks here at least to the next spin of the run loop.  That keeps
+      // immediate, synchronous setting of callback blocks after beginFetch working in tests.
+      dispatch_async(dispatch_get_main_queue(), ^{
+        [self simulateDataCallbacksForTestBlockWithBodyData:self->_bodyData
+                                                   response:response
+                                               responseData:responseData
+                                                      error:error];
+      });
+    }
+  });
+}
+
+- (void)simulateByteTransferReportWithDataLength:(int64_t)totalDataLength
+                                           block:(GTMSessionFetcherSendProgressBlock)block {
+  // This utility method simulates transfer progress with up to three callbacks.
+  // It is used to call back to any of the progress blocks.
+  int64_t sendReportSize = totalDataLength / 3 + 1;
+  int64_t totalSent = 0;
+  while (totalSent < totalDataLength) {
+    int64_t bytesRemaining = totalDataLength - totalSent;
+    sendReportSize = MIN(sendReportSize, bytesRemaining);
+    totalSent += sendReportSize;
+    [self invokeOnCallbackQueueUnlessStopped:^{
+      block(sendReportSize, totalSent, totalDataLength);
+    }];
+  }
+}
+
+- (void)simulateDataCallbacksForTestBlockWithBodyData:(nullable NSData *)bodyData
+                                             response:(NSURLResponse *)response
+                                         responseData:(NSData *)suppliedData
+                                                error:(NSError *)suppliedError {
+  __block NSData *responseData = suppliedData;
+  __block NSError *responseError = suppliedError;
+
+  // This method does the test simulation of callbacks once the upload
+  // and download data are known.
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Get copies of ivars we'll access in async invocations.  This simulation assumes
+    // they won't change during fetcher execution.
+    NSURL *destinationFileURL = _destinationFileURL;
+    GTMSessionFetcherWillRedirectBlock willRedirectBlock = _willRedirectBlock;
+    GTMSessionFetcherDidReceiveResponseBlock didReceiveResponseBlock = _didReceiveResponseBlock;
+    GTMSessionFetcherSendProgressBlock sendProgressBlock = _sendProgressBlock;
+    GTMSessionFetcherDownloadProgressBlock downloadProgressBlock = _downloadProgressBlock;
+    GTMSessionFetcherAccumulateDataBlock accumulateDataBlock = _accumulateDataBlock;
+    GTMSessionFetcherReceivedProgressBlock receivedProgressBlock = _receivedProgressBlock;
+    GTMSessionFetcherWillCacheURLResponseBlock willCacheURLResponseBlock =
+        _willCacheURLResponseBlock;
+    GTMSessionFetcherChallengeBlock challengeBlock = _challengeBlock;
+
+    // Simulate receipt of redirection.
+    if (willRedirectBlock) {
+      __auto_type block = ^{
+        willRedirectBlock((NSHTTPURLResponse *)response, self->_request,
+                          ^(NSURLRequest *redirectRequest){
+                              // For simulation, we'll assume
+                              // the app will just continue.
+                          });
+      };
+      [self invokeOnCallbackUnsynchronizedQueueAfterUserStopped:YES block:block];
+    }
+
+    // If the fetcher has a challenge block, simulate a challenge.
+    //
+    // It might be nice to eventually let the user determine which testBlock
+    // fetches get challenged rather than always executing the supplied
+    // challenge block.
+    if (challengeBlock) {
+      __auto_type block = ^{
+        NSURL *requestURL = self->_request.URL;
+        NSString *host = requestURL.host;
+        NSURLProtectionSpace *pspace =
+            [[NSURLProtectionSpace alloc] initWithHost:host
+                                                  port:requestURL.port.integerValue
+                                              protocol:requestURL.scheme
+                                                 realm:nil
+                                  authenticationMethod:NSURLAuthenticationMethodHTTPBasic];
+        id<NSURLAuthenticationChallengeSender> unusedSender =
+            (id<NSURLAuthenticationChallengeSender>)[NSNull null];
+        NSURLAuthenticationChallenge *challenge =
+            [[NSURLAuthenticationChallenge alloc] initWithProtectionSpace:pspace
+                                                       proposedCredential:nil
+                                                     previousFailureCount:0
+                                                          failureResponse:nil
+                                                                    error:nil
+                                                                   sender:unusedSender];
+        challengeBlock(self, challenge,
+                       ^(NSURLSessionAuthChallengeDisposition disposition,
+                         NSURLCredential *_Nullable credential){
+                           // We could change the
+                           // responseData and responseError
+                           // based on the disposition,
+                           // but it's easier for apps to
+                           // just supply the expected data
+                           // and error
+                           // directly to the test block. So
+                           // this simulation ignores the
+                           // disposition.
+                       });
+      };
+      [self invokeOnCallbackUnsynchronizedQueueAfterUserStopped:YES block:block];
+    }
+
+    // Simulate receipt of an initial response.
+    if (response && didReceiveResponseBlock) {
+      __auto_type block = ^{
+        didReceiveResponseBlock(response, ^(NSURLSessionResponseDisposition desiredDisposition){
+                                    // For simulation, we'll assume
+                                    // the disposition is to continue.
+                                });
+      };
+      [self invokeOnCallbackUnsynchronizedQueueAfterUserStopped:YES block:block];
+    }
+
+    // Simulate reporting send progress.
+    if (sendProgressBlock) {
+      __auto_type block =
+          ^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
+            // This is invoked on the callback queue unless
+            // stopped.
+            sendProgressBlock(bytesSent, totalBytesSent, totalBytesExpectedToSend);
+          };
+      [self simulateByteTransferReportWithDataLength:(int64_t)bodyData.length block:block];
+    }
+
+    if (destinationFileURL) {
+      // Simulate download to file progress.
+      if (downloadProgressBlock) {
+        __auto_type block = ^(int64_t bytesDownloaded, int64_t totalBytesDownloaded,
+                              int64_t totalBytesExpectedToDownload) {
+          // This is invoked on the callback queue unless
+          // stopped.
+          downloadProgressBlock(bytesDownloaded, totalBytesDownloaded,
+                                totalBytesExpectedToDownload);
+        };
+        [self simulateByteTransferReportWithDataLength:(int64_t)responseData.length block:block];
+      }
+
+      NSError *writeError;
+      [responseData writeToURL:destinationFileURL options:NSDataWritingAtomic error:&writeError];
+      if (writeError) {
+        // Tell the test code that writing failed.
+        responseError = writeError;
+      }
+    } else {
+      // Simulate download to NSData progress.
+      if ((accumulateDataBlock || receivedProgressBlock) && responseData) {
+        __auto_type block = ^(NSData *data, int64_t bytesReceived, int64_t totalBytesReceived,
+                              int64_t totalBytesExpectedToReceive) {
+          // This is invoked on the callback queue unless stopped.
+          if (accumulateDataBlock) {
+            accumulateDataBlock(data);
+          }
+
+          if (receivedProgressBlock) {
+            receivedProgressBlock(bytesReceived, totalBytesReceived);
+          }
+        };
+        [self simulateByteTransferWithData:responseData block:block];
+      }
+
+      if (!accumulateDataBlock) {
+        _downloadedData = [responseData mutableCopy];
+      }
+
+      if (willCacheURLResponseBlock) {
+        // Simulate letting the client inspect and alter the cached response.
+        NSData *cachedData = responseData ?: [[NSData alloc] init];  // Always have non-nil data.
+        NSCachedURLResponse *cachedResponse =
+            [[NSCachedURLResponse alloc] initWithResponse:response data:cachedData];
+        __auto_type block = ^{
+          willCacheURLResponseBlock(cachedResponse, ^(NSCachedURLResponse *responseToCache){
+                                        // The app may provide an
+                                        // alternative response, or
+                                        // nil to defeat caching.
+                                    });
+        };
+        [self invokeOnCallbackUnsynchronizedQueueAfterUserStopped:YES block:block];
+      }
+    }
+    _response = response;
+  }  // @synchronized(self)
+
+  NSOperationQueue *queue = self.sessionDelegateQueue;
+  [queue addOperationWithBlock:^{
+    // Rather than invoke failToBeginFetchWithError: we want to simulate completion of
+    // a connection that started and ended, so we'll call down to finishWithError:
+    NSInteger status = responseError ? responseError.code : 200;
+    if (status >= 200 && status <= 399) {
+      [self finishWithError:nil shouldRetry:NO];
+    } else {
+      [self shouldRetryNowForStatus:status
+                              error:responseError
+                   forceAssumeRetry:NO
+                           response:^(BOOL shouldRetry) {
+                             [self finishWithError:responseError shouldRetry:shouldRetry];
+                           }];
+    }
+  }];
+}
+
+- (void)simulateByteTransferWithData:(NSData *)responseData
+                               block:(GTMSessionFetcherSimulateByteTransferBlock)transferBlock {
+  // This utility method simulates transfering data to the client. It divides the data into at most
+  // "chunkCount" chunks and then passes each chunk along with a progress update to transferBlock.
+  // This function can be used with accumulateDataBlock or receivedProgressBlock.
+
+  NSUInteger chunkCount = MAX(self.testBlockAccumulateDataChunkCount, (NSUInteger)1);
+  NSUInteger totalDataLength = responseData.length;
+  NSUInteger sendDataSize = totalDataLength / chunkCount + 1;
+  NSUInteger totalSent = 0;
+  while (totalSent < totalDataLength) {
+    NSUInteger bytesRemaining = totalDataLength - totalSent;
+    sendDataSize = MIN(sendDataSize, bytesRemaining);
+    NSData *chunkData = [responseData subdataWithRange:NSMakeRange(totalSent, sendDataSize)];
+    totalSent += sendDataSize;
+    [self invokeOnCallbackQueueUnlessStopped:^{
+      transferBlock(chunkData, (int64_t)sendDataSize, (int64_t)totalSent, (int64_t)totalDataLength);
+    }];
+  }
+}
+
+#endif  // !GTM_DISABLE_FETCHER_TEST_BLOCK
+
+- (void)setSessionTask:(NSURLSessionTask *)sessionTask {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_sessionTask != sessionTask) {
+      _sessionTask = sessionTask;
+      if (_sessionTask) {
+        // Request could be nil on restoring this fetcher from a background session.
+        if (!_request) {
+          _request = [_sessionTask.originalRequest mutableCopy];
+        }
+      }
+    }
+  }  // @synchronized(self)
+}
+
+- (nullable NSURLSessionTask *)sessionTask {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _sessionTask;
+  }  // @synchronized(self)
+}
+
++ (NSUserDefaults *)fetcherUserDefaults {
+  static NSUserDefaults *gFetcherUserDefaults = nil;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    Class fetcherUserDefaultsClass = NSClassFromString(@"GTMSessionFetcherUserDefaultsFactory");
+    if (fetcherUserDefaultsClass) {
+      gFetcherUserDefaults = [fetcherUserDefaultsClass fetcherUserDefaults];
+    } else {
+      gFetcherUserDefaults = [NSUserDefaults standardUserDefaults];
+    }
+  });
+  return gFetcherUserDefaults;
+}
+
+- (void)addPersistedBackgroundSessionToDefaults {
+  NSString *sessionIdentifier = self.sessionIdentifier;
+  if (!sessionIdentifier) {
+    return;
+  }
+  NSArray *oldBackgroundSessions = [[self class] activePersistedBackgroundSessions];
+  if ([oldBackgroundSessions containsObject:_sessionIdentifier]) {
+    return;
+  }
+  NSMutableArray *newBackgroundSessions = [NSMutableArray arrayWithArray:oldBackgroundSessions];
+  [newBackgroundSessions addObject:sessionIdentifier];
+  GTM_LOG_BACKGROUND_SESSION(@"Add to background sessions: %@", newBackgroundSessions);
+
+  NSUserDefaults *userDefaults = [[self class] fetcherUserDefaults];
+  [userDefaults setObject:newBackgroundSessions forKey:kGTMSessionFetcherPersistedDestinationKey];
+  [userDefaults synchronize];
+}
+
+- (void)removePersistedBackgroundSessionFromDefaults {
+  NSString *sessionIdentifier = self.sessionIdentifier;
+  if (!sessionIdentifier) return;
+
+  NSArray *oldBackgroundSessions = [[self class] activePersistedBackgroundSessions];
+  if (!oldBackgroundSessions) {
+    return;
+  }
+  NSMutableArray *newBackgroundSessions = [NSMutableArray arrayWithArray:oldBackgroundSessions];
+  NSUInteger sessionIndex = [newBackgroundSessions indexOfObject:sessionIdentifier];
+  if (sessionIndex == NSNotFound) {
+    return;
+  }
+  [newBackgroundSessions removeObjectAtIndex:sessionIndex];
+  GTM_LOG_BACKGROUND_SESSION(@"Remove from background sessions: %@", newBackgroundSessions);
+
+  NSUserDefaults *userDefaults = [[self class] fetcherUserDefaults];
+  if (newBackgroundSessions.count == 0) {
+    [userDefaults removeObjectForKey:kGTMSessionFetcherPersistedDestinationKey];
+  } else {
+    [userDefaults setObject:newBackgroundSessions forKey:kGTMSessionFetcherPersistedDestinationKey];
+  }
+  [userDefaults synchronize];
+}
+
++ (nullable NSArray *)activePersistedBackgroundSessions {
+  NSUserDefaults *userDefaults = [[self class] fetcherUserDefaults];
+  NSArray *oldBackgroundSessions =
+      [userDefaults arrayForKey:kGTMSessionFetcherPersistedDestinationKey];
+  if (oldBackgroundSessions.count == 0) {
+    return nil;
+  }
+  NSMutableArray *activeBackgroundSessions = nil;
+  NSMapTable *sessionIdentifierToFetcherMap = [self sessionIdentifierToFetcherMap];
+  for (NSString *sessionIdentifier in oldBackgroundSessions) {
+    GTMSessionFetcher *fetcher = [sessionIdentifierToFetcherMap objectForKey:sessionIdentifier];
+    if (fetcher) {
+      if (!activeBackgroundSessions) {
+        activeBackgroundSessions = [[NSMutableArray alloc] init];
+      }
+      [activeBackgroundSessions addObject:sessionIdentifier];
+    }
+  }
+  return activeBackgroundSessions;
+}
+
++ (NSArray *)fetchersForBackgroundSessions {
+  NSUserDefaults *userDefaults = [[self class] fetcherUserDefaults];
+  NSArray *backgroundSessions =
+      [userDefaults arrayForKey:kGTMSessionFetcherPersistedDestinationKey];
+  NSMapTable *sessionIdentifierToFetcherMap = [self sessionIdentifierToFetcherMap];
+  NSMutableArray *fetchers = [NSMutableArray array];
+  for (NSString *sessionIdentifier in backgroundSessions) {
+    GTMSessionFetcher *fetcher = [sessionIdentifierToFetcherMap objectForKey:sessionIdentifier];
+    if (!fetcher) {
+      fetcher = [self fetcherWithSessionIdentifier:sessionIdentifier];
+      GTMSESSION_ASSERT_DEBUG(fetcher != nil, @"Unexpected invalid session identifier: %@",
+                              sessionIdentifier);
+      if (!fetcher.clientWillReconnectBackgroundSession) {
+        [fetcher beginFetchWithCompletionHandler:nil];
+      }
+    }
+    GTM_LOG_BACKGROUND_SESSION(@"%@ restoring session %@ by creating fetcher %@ %p", [self class],
+                               sessionIdentifier, fetcher, fetcher);
+    if (fetcher != nil) {
+      [fetchers addObject:fetcher];
+    }
+  }
+  return fetchers;
+}
+
+#if TARGET_OS_IPHONE && !TARGET_OS_WATCH
++ (void)application:(UIApplication *)application
+    handleEventsForBackgroundURLSession:(NSString *)identifier
+                      completionHandler:(GTMSessionFetcherSystemCompletionHandler)completionHandler
+    GTM_SWIFT_DISABLE_ASYNC {
+  GTMSessionFetcher *fetcher = [self fetcherWithSessionIdentifier:identifier];
+  if (fetcher != nil) {
+    fetcher.systemCompletionHandler = completionHandler;
+  } else {
+    GTM_LOG_BACKGROUND_SESSION(@"%@ did not create background session identifier: %@", [self class],
+                               identifier);
+  }
+}
+#endif
+
+- (nullable NSString *)sessionIdentifier {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _sessionIdentifier;
+  }  // @synchronized(self)
+}
+
+- (void)setSessionIdentifier:(NSString *)sessionIdentifier {
+  GTMSESSION_ASSERT_DEBUG(sessionIdentifier != nil, @"Invalid session identifier");
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSESSION_ASSERT_DEBUG(!_session, @"Unable to set session identifier after session created");
+    _sessionIdentifier = [sessionIdentifier copy];
+    _usingBackgroundSession = YES;
+    _canShareSession = NO;
+    [self restoreDefaultStateForSessionIdentifierMetadata];
+  }  // @synchronized(self)
+}
+
+- (void)setSessionIdentifierInternal:(nullable NSString *)sessionIdentifier {
+  // This internal method only does a synchronized set of the session identifier.
+  // It does not have side effects on the background session, shared session, or
+  // session identifier metadata.
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _sessionIdentifier = [sessionIdentifier copy];
+  }  // @synchronized(self)
+}
+
+- (nullable NSDictionary *)sessionUserInfo {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_sessionUserInfo == nil) {
+      // We'll return the metadata dictionary with internal keys removed. This avoids the user
+      // re-using the userInfo dictionary later and accidentally including the internal keys.
+      NSMutableDictionary *metadata = [[self sessionIdentifierMetadataUnsynchronized] mutableCopy];
+      NSSet *keysToRemove = [metadata keysOfEntriesPassingTest:^BOOL(id key, id obj, BOOL *stop) {
+        return [key hasPrefix:@"_"];
+      }];
+      [metadata removeObjectsForKeys:[keysToRemove allObjects]];
+      if (metadata.count > 0) {
+        _sessionUserInfo = metadata;
+      }
+    }
+    return _sessionUserInfo;
+  }  // @synchronized(self)
+}
+
+- (void)setSessionUserInfo:(nullable NSDictionary *)dictionary {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSESSION_ASSERT_DEBUG(_sessionIdentifier == nil, @"Too late to assign userInfo");
+    _sessionUserInfo = dictionary;
+  }  // @synchronized(self)
+}
+
+- (nullable NSDictionary *)sessionIdentifierDefaultMetadata {
+  GTMSessionCheckSynchronized(self);
+
+  NSMutableDictionary *defaultUserInfo = [[NSMutableDictionary alloc] init];
+  if (_destinationFileURL) {
+    defaultUserInfo[kGTMSessionIdentifierDestinationFileURLMetadataKey] =
+        [_destinationFileURL absoluteString];
+  }
+  if (_bodyFileURL) {
+    defaultUserInfo[kGTMSessionIdentifierBodyFileURLMetadataKey] = [_bodyFileURL absoluteString];
+  }
+  if (_clientWillReconnectBackgroundSession) {
+    defaultUserInfo[kGTMSessionIdentifierClientReconnectMetadataKey] = @"YES";
+  }
+  return (defaultUserInfo.count > 0) ? defaultUserInfo : nil;
+}
+
+- (void)restoreDefaultStateForSessionIdentifierMetadata {
+  GTMSessionCheckSynchronized(self);
+
+  NSDictionary *metadata = [self sessionIdentifierMetadataUnsynchronized];
+  NSString *destinationFileURLString = metadata[kGTMSessionIdentifierDestinationFileURLMetadataKey];
+  if (destinationFileURLString) {
+    _destinationFileURL = [NSURL URLWithString:destinationFileURLString];
+    GTM_LOG_BACKGROUND_SESSION(@"Restoring destination file URL: %@", _destinationFileURL);
+  }
+  NSString *bodyFileURLString = metadata[kGTMSessionIdentifierBodyFileURLMetadataKey];
+  if (bodyFileURLString) {
+    _bodyFileURL = [NSURL URLWithString:bodyFileURLString];
+    GTM_LOG_BACKGROUND_SESSION(@"Restoring body file URL: %@", _bodyFileURL);
+  }
+  NSString *clientReconnectString = metadata[kGTMSessionIdentifierClientReconnectMetadataKey];
+  if (clientReconnectString) {
+    _clientWillReconnectBackgroundSession = [clientReconnectString boolValue];
+    GTM_LOG_BACKGROUND_SESSION(@"Restoring clientWillReconnectBackgroundSession: %@",
+                               (_clientWillReconnectBackgroundSession ? @"YES" : @"NO"));
+  }
+}
+
+- (nullable NSDictionary *)sessionIdentifierMetadata {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [self sessionIdentifierMetadataUnsynchronized];
+  }
+}
+
+- (nullable NSDictionary *)sessionIdentifierMetadataUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  // Session Identifier format: "com.google.<ClassName>_<UUID>_<Metadata in JSON format>
+  if (!_sessionIdentifier) {
+    return nil;
+  }
+  NSScanner *metadataScanner = [NSScanner scannerWithString:_sessionIdentifier];
+  [metadataScanner setCharactersToBeSkipped:nil];
+  NSString *metadataString;
+  NSString *uuid;
+  if ([metadataScanner scanUpToString:@"_" intoString:NULL] &&
+      [metadataScanner scanString:@"_" intoString:NULL] &&
+      [metadataScanner scanUpToString:@"_" intoString:&uuid] &&
+      [metadataScanner scanString:@"_" intoString:NULL] &&
+      [metadataScanner scanUpToString:@"\n" intoString:&metadataString]) {
+    _sessionIdentifierUUID = uuid;
+    NSData *metadataData = [metadataString dataUsingEncoding:NSUTF8StringEncoding];
+    NSError *error;
+    NSDictionary *metadataDict = [NSJSONSerialization JSONObjectWithData:metadataData
+                                                                 options:0
+                                                                   error:&error];
+    GTM_LOG_BACKGROUND_SESSION(@"User Info from session identifier: %@ %@", metadataDict,
+                               error ? error : @"");
+    return metadataDict;
+  }
+  return nil;
+}
+
+- (NSString *)createSessionIdentifierWithMetadata:(nullable NSDictionary *)metadataToInclude {
+  NSString *result;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Session Identifier format: "com.google.<ClassName>_<UUID>_<Metadata in JSON format>
+    GTMSESSION_ASSERT_DEBUG(!_sessionIdentifier, @"Session identifier already created");
+    _sessionIdentifierUUID = [[NSUUID UUID] UUIDString];
+    _sessionIdentifier =
+        [NSString stringWithFormat:@"%@_%@", kGTMSessionIdentifierPrefix, _sessionIdentifierUUID];
+    // Start with user-supplied keys so they cannot accidentally override the fetcher's keys.
+    NSMutableDictionary *metadataDict =
+        [NSMutableDictionary dictionaryWithDictionary:(NSDictionary *_Nonnull)_sessionUserInfo];
+
+    if (metadataToInclude) {
+      [metadataDict addEntriesFromDictionary:(NSDictionary *)metadataToInclude];
+    }
+    NSDictionary *defaultMetadataDict = [self sessionIdentifierDefaultMetadata];
+    if (defaultMetadataDict) {
+      [metadataDict addEntriesFromDictionary:defaultMetadataDict];
+    }
+    if (metadataDict.count > 0) {
+      NSData *metadataData = [NSJSONSerialization dataWithJSONObject:metadataDict
+                                                             options:0
+                                                               error:NULL];
+      GTMSESSION_ASSERT_DEBUG(metadataData != nil,
+                              @"Session identifier user info failed to convert to JSON");
+      if (metadataData.length > 0) {
+        NSString *metadataString = [[NSString alloc] initWithData:metadataData
+                                                         encoding:NSUTF8StringEncoding];
+        _sessionIdentifier = [_sessionIdentifier stringByAppendingFormat:@"_%@", metadataString];
+      }
+    }
+    _didCreateSessionIdentifier = YES;
+    result = _sessionIdentifier;
+  }  // @synchronized(self)
+  return result;
+}
+
+- (void)failToBeginFetchWithError:(NSError *)error {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _hasStoppedFetching = YES;
+  }
+
+  if (error == nil) {
+    error = [NSError errorWithDomain:kGTMSessionFetcherErrorDomain
+                                code:GTMSessionFetcherErrorDownloadFailed
+                            userInfo:nil];
+  }
+
+  [self invokeFetchCallbacksOnCallbackQueueWithData:nil
+                                              error:error
+                                        mayDecorate:YES
+                             shouldReleaseCallbacks:YES];
+
+  [_service fetcherDidStop:self];
+
+  self.authorizer = nil;
+}
+
++ (GTMSessionCookieStorage *)staticCookieStorage {
+  static GTMSessionCookieStorage *gCookieStorage = nil;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    gCookieStorage = [[GTMSessionCookieStorage alloc] init];
+  });
+  return gCookieStorage;
+}
+
+#if GTM_BACKGROUND_TASK_FETCHING
+
+- (void)endBackgroundTask {
+  // Whenever the connection stops or background execution expires,
+  // we need to tell UIApplication we're done.
+  UIBackgroundTaskIdentifier bgTaskID;
+  @synchronized(self) {
+    bgTaskID = self.backgroundTaskIdentifier;
+    if (bgTaskID != UIBackgroundTaskInvalid) {
+      self.backgroundTaskIdentifier = UIBackgroundTaskInvalid;
+    }
+  }
+
+  if (bgTaskID != UIBackgroundTaskInvalid) {
+    id<GTMUIApplicationProtocol> app = [[self class] fetcherUIApplication];
+    [app endBackgroundTask:bgTaskID];
+  }
+}
+
+#endif  // GTM_BACKGROUND_TASK_FETCHING
+
+- (void)authorizeRequest {
+  GTMSessionCheckNotSynchronized(self);
+
+  id authorizer = self.authorizer;
+  SEL asyncAuthSel = @selector(authorizeRequest:delegate:didFinishSelector:);
+  if ([authorizer respondsToSelector:asyncAuthSel]) {
+    SEL callbackSel = @selector(authorizer:request:finishedWithError:);
+    NSMutableURLRequest *mutableRequest = [self.request mutableCopy];
+    [authorizer authorizeRequest:mutableRequest delegate:self didFinishSelector:callbackSel];
+  } else {
+    GTMSESSION_ASSERT_DEBUG(authorizer == nil, @"invalid authorizer for fetch");
+
+    // No authorizing possible, and authorizing happens only after any delay;
+    // just begin fetching
+    [self beginFetchMayDelay:NO mayAuthorize:NO mayDecorate:YES];
+  }
+}
+
+- (void)authorizer:(id<GTMFetcherAuthorizationProtocol>)auth
+              request:(NSMutableURLRequest *)authorizedRequest
+    finishedWithError:(NSError *)error {
+  GTMSessionCheckNotSynchronized(self);
+
+  if (error != nil) {
+    // We can't fetch without authorization
+    [self failToBeginFetchWithError:error];
+  } else {
+    @synchronized(self) {
+      _request = authorizedRequest;
+    }
+    [self beginFetchMayDelay:NO mayAuthorize:NO mayDecorate:YES];
+  }
+}
+
+- (void)applyDecoratorsAtRequestWillStart:(NSArray<id<GTMFetcherDecoratorProtocol>> *)decorators
+                          startingAtIndex:(NSUInteger)index {
+  GTMSessionCheckNotSynchronized(self);
+  if (index >= decorators.count) {
+    GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher decorate requestWillStart %zu decorators complete",
+                         decorators.count);
+    [self beginFetchMayDelay:NO mayAuthorize:NO mayDecorate:NO];
+    return;
+  }
+
+  __weak __typeof__(self) weakSelf = self;
+  id<GTMFetcherDecoratorProtocol> decorator = decorators[index];
+  GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher decorate requestWillStart %zu decorators, index %zu, "
+                       @"retry count %zu, decorator %@",
+                       decorators.count, index, self.retryCount, decorator);
+  [decorator fetcherWillStart:self
+            completionHandler:^(NSURLRequest *_Nullable newRequest, NSError *_Nullable error) {
+              GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher decorator requestWillStart index %zu "
+                                   @"complete, newRequest %@, error %@",
+                                   index, newRequest, error);
+              __strong __typeof__(self) strongSelf = weakSelf;
+              if (!strongSelf) {
+                GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher destroyed before requestWillStart "
+                                     @"decorators completed, ignoring.");
+                return;
+              }
+              if (error) {
+                [self failToBeginFetchWithError:(NSError *_Nonnull)error];
+                return;
+              }
+              if (newRequest) {
+                // Copying `NSURLRequest` should be cheap, but in case profiling shows this
+                // operation is prohibitively expensive, this API might need to be changed to allow
+                // clients to manipulate `self.request` directly.
+                [strongSelf updateMutableRequest:[newRequest mutableCopy]];
+              }
+              [strongSelf applyDecoratorsAtRequestWillStart:decorators startingAtIndex:index + 1];
+            }];
+}
+
+- (void)applyDecoratorsAtRequestDidFinish:(NSArray<id<GTMFetcherDecoratorProtocol>> *)decorators
+                                 withData:(nullable NSData *)data
+                                    error:(nullable NSError *)error
+                          startingAtIndex:(NSUInteger)index
+                   shouldReleaseCallbacks:(BOOL)shouldReleaseCallbacks {
+  GTMSessionCheckNotSynchronized(self);
+  if (index >= decorators.count) {
+    GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher decorate requestDidFinish %zu decorators complete",
+                         decorators.count);
+    [self invokeFetchCallbacksOnCallbackQueueWithData:data
+                                                error:error
+                                          mayDecorate:NO
+                               shouldReleaseCallbacks:shouldReleaseCallbacks];
+    return;
+  }
+
+  __weak __typeof__(self) weakSelf = self;
+  id<GTMFetcherDecoratorProtocol> decorator = decorators[index];
+  GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher decorate requestDidFinish %zu decorators, index %zu, "
+                       @"retry count %zu, decorator %@",
+                       decorators.count, index, self.retryCount, decorator);
+  [decorator fetcherDidFinish:self
+                     withData:data
+                        error:error
+            completionHandler:^{
+              GTMSESSION_LOG_DEBUG(
+                  @"GTMSessionFetcher decorator requestDidFinish index %zu complete", index);
+              __strong __typeof__(self) strongSelf = weakSelf;
+              if (!strongSelf) {
+                GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher destroyed before requestDidFinish "
+                                     @"decorators completed, ignoring.");
+                return;
+              }
+              [strongSelf applyDecoratorsAtRequestDidFinish:decorators
+                                                   withData:data
+                                                      error:error
+                                            startingAtIndex:index + 1
+                                     shouldReleaseCallbacks:shouldReleaseCallbacks];
+            }];
+}
+
+- (BOOL)canFetchWithBackgroundSession {
+  // Subclasses may override.
+  return YES;
+}
+
+// Returns YES if the fetcher has been started and has not yet stopped.
+//
+// Fetching includes waiting for authorization or for retry, waiting to be allowed by the
+// service object to start the request, and actually fetching the request.
+- (BOOL)isFetching {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [self isFetchingUnsynchronized];
+  }
+}
+
+- (BOOL)isFetchingUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  BOOL hasBegun = (_initialBeginFetchDate != nil);
+  return hasBegun && !_hasStoppedFetching;
+}
+
+- (nullable NSURLResponse *)response {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSURLResponse *response = [self responseUnsynchronized];
+    return response;
+  }  // @synchronized(self)
+}
+
+- (nullable NSURLResponse *)responseUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  NSURLResponse *response = _sessionTask.response;
+  if (!response) response = _response;
+  return response;
+}
+
+- (NSInteger)statusCode {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSInteger statusCode = [self statusCodeUnsynchronized];
+    return statusCode;
+  }  // @synchronized(self)
+}
+
+- (NSInteger)statusCodeUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  NSURLResponse *response = [self responseUnsynchronized];
+  NSInteger statusCode;
+
+  if ([response respondsToSelector:@selector(statusCode)]) {
+    statusCode = [(NSHTTPURLResponse *)response statusCode];
+  } else {
+    //  Default to zero, in hopes of hinting "Unknown" (we can't be
+    //  sure that things are OK enough to use 200).
+    statusCode = 0;
+  }
+  return statusCode;
+}
+
+- (nullable NSDictionary *)responseHeaders {
+  GTMSessionCheckNotSynchronized(self);
+
+  NSURLResponse *response = self.response;
+  if ([response respondsToSelector:@selector(allHeaderFields)]) {
+    NSDictionary *headers = [(NSHTTPURLResponse *)response allHeaderFields];
+    return headers;
+  }
+  return nil;
+}
+
+- (nullable NSDictionary *)responseHeadersUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  NSURLResponse *response = [self responseUnsynchronized];
+  if ([response respondsToSelector:@selector(allHeaderFields)]) {
+    NSDictionary *headers = [(NSHTTPURLResponse *)response allHeaderFields];
+    return headers;
+  }
+  return nil;
+}
+
+- (void)releaseCallbacks {
+  // Avoid releasing blocks in the sync section since objects dealloc'd by
+  // the blocks being released may call back into the fetcher or fetcher
+  // service.
+  dispatch_queue_t NS_VALID_UNTIL_END_OF_SCOPE holdCallbackQueue;
+  GTMSessionFetcherCompletionHandler NS_VALID_UNTIL_END_OF_SCOPE holdCompletionHandler;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    holdCallbackQueue = _callbackQueue;
+    holdCompletionHandler = _completionHandler;
+
+    _callbackQueue = nil;
+    _completionHandler = nil;  // Setter overridden in upload. Setter assumed to be used externally.
+  }
+
+  // Set local callback pointers to nil here rather than let them release at the end of the scope
+  // to make any problems due to the blocks being released be a bit more obvious in a stack trace.
+  holdCallbackQueue = nil;
+  holdCompletionHandler = nil;
+
+  self.configurationBlock = nil;
+  self.didReceiveResponseBlock = nil;
+  self.challengeBlock = nil;
+  self.willRedirectBlock = nil;
+  self.sendProgressBlock = nil;
+  self.receivedProgressBlock = nil;
+  self.downloadProgressBlock = nil;
+  self.accumulateDataBlock = nil;
+  self.willCacheURLResponseBlock = nil;
+  self.retryBlock = nil;
+  self.testBlock = nil;
+  self.resumeDataBlock = nil;
+  if (@available(iOS 10.0, *)) {
+    self.metricsCollectionBlock = nil;
+  }
+}
+
+- (void)forgetSessionIdentifierForFetcher {
+  GTMSessionCheckSynchronized(self);
+  [self forgetSessionIdentifierForFetcherWithoutSyncCheck];
+}
+
+- (void)forgetSessionIdentifierForFetcherWithoutSyncCheck {
+  // This should be called inside a @synchronized block (except during dealloc.)
+  if (_sessionIdentifier) {
+    NSMapTable *sessionIdentifierToFetcherMap = [[self class] sessionIdentifierToFetcherMap];
+    [sessionIdentifierToFetcherMap removeObjectForKey:_sessionIdentifier];
+    _sessionIdentifier = nil;
+    _didCreateSessionIdentifier = NO;
+  }
+}
+
+// External stop method
+- (void)stopFetching {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Prevent enqueued callbacks from executing.
+    _userStoppedFetching = YES;
+  }  // @synchronized(self)
+  [self stopFetchReleasingCallbacks:YES];
+}
+
+// Cancel the fetch of the URL that's currently in progress.
+//
+// If shouldReleaseCallbacks is NO then the fetch will be retried so the callbacks
+// need to still be retained.
+- (void)stopFetchReleasingCallbacks:(BOOL)shouldReleaseCallbacks {
+  [self removePersistedBackgroundSessionFromDefaults];
+
+  id<GTMSessionFetcherServiceProtocol> service;
+  NSMutableURLRequest *request;
+
+  // If the task or the retry timer is all that's retaining the fetcher,
+  // we want to be sure this instance survives stopping at least long enough for
+  // the stack to unwind.
+  __autoreleasing GTMSessionFetcher *holdSelf = self;
+
+  BOOL hasCanceledTask = NO;
+
+  [holdSelf destroyRetryTimer];
+
+  BOOL sendStopNotification = YES;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _hasStoppedFetching = YES;
+
+    service = _service;
+    request = _request;
+
+    if (_sessionTask) {
+      // In case cancelling the task or session calls this recursively, we want
+      // to ensure that we'll only release the task and delegate once,
+      // so first set _sessionTask to nil
+      //
+      // This may be called in a callback from the task, so use autorelease to avoid
+      // releasing the task in its own callback.
+      __autoreleasing NSURLSessionTask *oldTask = _sessionTask;
+      if (!_isUsingTestBlock) {
+        _response = _sessionTask.response;
+      }
+      _sessionTask = nil;
+
+      if ([oldTask state] != NSURLSessionTaskStateCompleted) {
+        // For download tasks, when the fetch is stopped, we may provide resume data that can
+        // be used to create a new session.
+        BOOL mayResume = (_resumeDataBlock &&
+                          [oldTask respondsToSelector:@selector(cancelByProducingResumeData:)]);
+        if (!mayResume) {
+          [oldTask cancel];
+          // A side effect of stopping the task is that URLSession:task:didCompleteWithError:
+          // will be invoked asynchronously on the delegate queue.
+        } else {
+          void (^resumeBlock)(NSData *) = _resumeDataBlock;
+          _resumeDataBlock = nil;
+
+          // Save callbackQueue since releaseCallbacks clears it.
+          dispatch_queue_t callbackQueue = _callbackQueue;
+          dispatch_group_enter(_callbackGroup);
+          [(NSURLSessionDownloadTask *)oldTask cancelByProducingResumeData:^(NSData *resumeData) {
+            [self invokeOnCallbackQueue:callbackQueue
+                       afterUserStopped:YES
+                                  block:^{
+                                    resumeBlock(resumeData);
+                                    dispatch_group_leave(self->_callbackGroup);
+                                  }];
+          }];
+        }
+        hasCanceledTask = YES;
+      }
+    }
+
+    // If the task was canceled, wait until the URLSession:task:didCompleteWithError: to call
+    // finishTasksAndInvalidate, since calling it immediately tends to crash, see radar 18471901.
+    if (_session) {
+      BOOL shouldInvalidate = _shouldInvalidateSession;
+#if TARGET_OS_IPHONE
+      // Don't invalidate if we've got a systemCompletionHandler, since
+      // URLSessionDidFinishEventsForBackgroundURLSession: won't be called if invalidated.
+      shouldInvalidate = shouldInvalidate && !self.systemCompletionHandler;
+#endif
+      if (shouldInvalidate) {
+        __autoreleasing NSURLSession *oldSession = _session;
+        _session = nil;
+
+        if (!hasCanceledTask) {
+          [oldSession finishTasksAndInvalidate];
+        } else {
+          sendStopNotification = NO;
+          _sessionNeedingInvalidation = oldSession;
+        }
+      }
+    }
+  }  // @synchronized(self)
+
+  // If the NSURLSession needs to be invalidated, but needs to wait until the delegate method
+  // URLSession:task:didCompleteWithError: is called, delay sending the fetch stopped notification
+  // until then; otherwise send it now.
+  if (sendStopNotification) {
+    [self sendStopNotificationIfNeeded];
+  }
+
+  [_authorizer stopAuthorizationForRequest:request];
+
+  if (shouldReleaseCallbacks) {
+    [self releaseCallbacks];
+
+    self.authorizer = nil;
+  }
+
+  [service fetcherDidStop:self];
+
+#if GTM_BACKGROUND_TASK_FETCHING
+  [self endBackgroundTask];
+#endif
+}
+
+- (void)setStopNotificationNeeded:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _isStopNotificationNeeded = flag;
+  }  // @synchronized(self)
+}
+
+- (void)sendStopNotificationIfNeeded {
+  BOOL sendNow = NO;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_isStopNotificationNeeded) {
+      _isStopNotificationNeeded = NO;
+      sendNow = YES;
+    }
+  }  // @synchronized(self)
+
+  if (sendNow) {
+    [self postNotificationOnMainThreadWithName:kGTMSessionFetcherStoppedNotification
+                                      userInfo:nil
+                                  requireAsync:NO];
+  }
+}
+
+- (void)retryFetch {
+  [self stopFetchReleasingCallbacks:NO];
+
+  // A retry will need a configuration with a fresh session identifier.
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_sessionIdentifier && _didCreateSessionIdentifier) {
+      [self forgetSessionIdentifierForFetcher];
+      _configuration = nil;
+    }
+
+    if (_canShareSession) {
+      // Force a grab of the current session from the fetcher service in case
+      // the service's old one has become invalid.
+      _session = nil;
+    }
+  }  // @synchronized(self)
+
+  [self beginFetchForRetry];
+}
+
+- (BOOL)waitForCompletionWithTimeout:(NSTimeInterval)timeoutInSeconds {
+  // Uncovered in upload fetcher testing, because the chunk fetcher is being waited on, and gets
+  // released by the upload code. The uploader just holds onto it with an ivar, and that gets
+  // nilled in the chunk fetcher callback.
+  // Used once in while loop just to avoid unused variable compiler warning.
+  __autoreleasing GTMSessionFetcher *holdSelf = self;
+
+  NSDate *giveUpDate = [NSDate dateWithTimeIntervalSinceNow:timeoutInSeconds];
+
+  BOOL shouldSpinRunLoop =
+      ([NSThread isMainThread] &&
+       (!self.callbackQueue || self.callbackQueue == dispatch_get_main_queue()));
+  BOOL expired = NO;
+
+  // Loop until the callbacks have been called and released, and until
+  // the connection is no longer pending, until there are no callback dispatches
+  // in flight, or until the timeout has expired.
+  int64_t delta = (int64_t)(100 * NSEC_PER_MSEC);  // 100 ms
+  while (1) {
+    BOOL isTaskInProgress =
+        (holdSelf->_sessionTask && [_sessionTask state] != NSURLSessionTaskStateCompleted);
+    BOOL needsToCallCompletion = (_completionHandler != nil);
+    BOOL isCallbackInProgress =
+        (_callbackGroup &&
+         dispatch_group_wait(_callbackGroup, dispatch_time(DISPATCH_TIME_NOW, delta)));
+
+    if (!isTaskInProgress && !needsToCallCompletion && !isCallbackInProgress) break;
+
+    expired = ([giveUpDate timeIntervalSinceNow] < 0);
+    if (expired) {
+      GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher waitForCompletionWithTimeout:%0.1f expired -- "
+                           @"%@%@%@",
+                           timeoutInSeconds, isTaskInProgress ? @"taskInProgress " : @"",
+                           needsToCallCompletion ? @"needsToCallCompletion " : @"",
+                           isCallbackInProgress ? @"isCallbackInProgress" : @"");
+      break;
+    }
+
+    // Run the current run loop 1/1000 of a second to give the networking
+    // code a chance to work
+    const NSTimeInterval kSpinInterval = 0.001;
+    if (shouldSpinRunLoop) {
+      NSDate *stopDate = [NSDate dateWithTimeIntervalSinceNow:kSpinInterval];
+      [[NSRunLoop currentRunLoop] runUntilDate:stopDate];
+    } else {
+      [NSThread sleepForTimeInterval:kSpinInterval];
+    }
+  }
+  return !expired;
+}
+
++ (void)setGlobalTestBlock:(nullable GTMSessionFetcherTestBlock)block {
+#if GTM_DISABLE_FETCHER_TEST_BLOCK
+  GTMSESSION_ASSERT_DEBUG(block == nil, @"test blocks disabled");
+#endif
+  gGlobalTestBlock = [block copy];
+}
+
+#if GTM_BACKGROUND_TASK_FETCHING
+
+static _Nullable id<GTMUIApplicationProtocol> gSubstituteUIApp;
+
++ (void)setSubstituteUIApplication:(nullable id<GTMUIApplicationProtocol>)app {
+  gSubstituteUIApp = app;
+}
+
++ (nullable id<GTMUIApplicationProtocol>)substituteUIApplication {
+  return gSubstituteUIApp;
+}
+
++ (nullable id<GTMUIApplicationProtocol>)fetcherUIApplication {
+  id<GTMUIApplicationProtocol> app = gSubstituteUIApp;
+  if (app) return app;
+
+  // iOS App extensions should not call [UIApplication sharedApplication], even
+  // if UIApplication responds to it.
+
+  static Class applicationClass = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    BOOL isAppExtension = [[[NSBundle mainBundle] bundlePath] hasSuffix:@".appex"];
+    if (!isAppExtension) {
+      Class cls = NSClassFromString(@"UIApplication");
+      if (cls && [cls respondsToSelector:NSSelectorFromString(@"sharedApplication")]) {
+        applicationClass = cls;
+      }
+    }
+  });
+
+  if (applicationClass) {
+    app = (id<GTMUIApplicationProtocol>)[applicationClass sharedApplication];
+  }
+  return app;
+}
+#endif  //  GTM_BACKGROUND_TASK_FETCHING
+
+#pragma mark NSURLSession Delegate Methods
+
+// NSURLSession documentation indicates that redirectRequest can be passed to the handler
+// but empirically redirectRequest lacks the HTTP body, so passing it will break POSTs.
+// Instead, we construct a new request, a copy of the original, with overrides from the
+// redirect.
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    willPerformHTTPRedirection:(NSHTTPURLResponse *)redirectResponse
+                    newRequest:(NSURLRequest *)redirectRequest
+             completionHandler:(void (^)(NSURLRequest *_Nullable))handler {
+  [self setSessionTask:task];
+  GTM_LOG_SESSION_DELEGATE(
+      @"%@ %p URLSession:%@ task:%@ willPerformHTTPRedirection:%@ newRequest:%@", [self class],
+      self, session, task, redirectResponse, redirectRequest);
+
+  if ([self userStoppedFetching]) {
+    handler(nil);
+    return;
+  }
+  if (redirectRequest && redirectResponse) {
+    // Copy the original request, including the body.
+    NSURLRequest *originalRequest = self.request;
+    NSMutableURLRequest *newRequest = [originalRequest mutableCopy];
+
+    // The new requests's URL overrides the original's URL.
+    [newRequest setURL:[GTMSessionFetcher redirectURLWithOriginalRequestURL:originalRequest.URL
+                                                         redirectRequestURL:redirectRequest.URL]];
+
+    // Any headers in the redirect override headers in the original.
+    NSDictionary *redirectHeaders = redirectRequest.allHTTPHeaderFields;
+    for (NSString *key in redirectHeaders) {
+      NSString *value = [redirectHeaders objectForKey:key];
+      [newRequest setValue:value forHTTPHeaderField:key];
+    }
+
+    redirectRequest = newRequest;
+
+    // Log the response we just received
+    [self setResponse:redirectResponse];
+    [self logNowWithError:nil];
+
+    GTMSessionFetcherWillRedirectBlock willRedirectBlock = self.willRedirectBlock;
+    if (willRedirectBlock) {
+      @synchronized(self) {
+        GTMSessionMonitorSynchronized(self);
+        __auto_type block = ^{
+          willRedirectBlock(redirectResponse, redirectRequest, ^(NSURLRequest *clientRequest) {
+            // Update the request for future logging.
+            [self updateMutableRequest:[clientRequest mutableCopy]];
+
+            handler(clientRequest);
+          });
+        };
+        [self invokeOnCallbackQueueAfterUserStopped:YES block:block];
+      }  // @synchronized(self)
+      return;
+    }
+    // Continues here if the client did not provide a redirect block.
+
+    // Update the request for future logging.
+    [self updateMutableRequest:[redirectRequest mutableCopy]];
+  }
+  handler(redirectRequest);
+}
+
+- (void)URLSession:(NSURLSession *)session
+              dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveResponse:(NSURLResponse *)response
+     completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))handler {
+  [self setSessionTask:dataTask];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ dataTask:%@ didReceiveResponse:%@", [self class],
+                           self, session, dataTask, response);
+  __auto_type accumulateAndFinish = ^(NSURLSessionResponseDisposition dispositionValue) {
+    // This method is called when the server has determined that it
+    // has enough information to create the NSURLResponse
+    // it can be called multiple times, for example in the case of a
+    // redirect, so each time we reset the data.
+    @synchronized(self) {
+      GTMSessionMonitorSynchronized(self);
+
+      BOOL hadPreviousData = self->_downloadedLength > 0;
+
+      [self->_downloadedData setLength:0];
+      self->_downloadedLength = 0;
+
+      if (hadPreviousData && (dispositionValue != NSURLSessionResponseCancel)) {
+        // Tell the accumulate block to discard prior data.
+        GTMSessionFetcherAccumulateDataBlock accumulateBlock = self->_accumulateDataBlock;
+        if (accumulateBlock) {
+          [self invokeOnCallbackQueueUnlessStopped:^{
+            accumulateBlock(nil);
+          }];
+        }
+      }
+    }  // @synchronized(self)
+    handler(dispositionValue);
+  };
+
+  GTMSessionFetcherDidReceiveResponseBlock receivedResponseBlock;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    receivedResponseBlock = _didReceiveResponseBlock;
+    if (receivedResponseBlock) {
+      // We will ultimately need to call back to NSURLSession's handler with the disposition value
+      // for this delegate method even if the user has stopped the fetcher.
+      __auto_type block = ^{
+        receivedResponseBlock(response, ^(NSURLSessionResponseDisposition desiredDisposition) {
+          accumulateAndFinish(desiredDisposition);
+        });
+      };
+      [self invokeOnCallbackQueueAfterUserStopped:YES block:block];
+    }
+  }  // @synchronized(self)
+
+  if (receivedResponseBlock == nil) {
+    accumulateAndFinish(NSURLSessionResponseAllow);
+  }
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 dataTask:(NSURLSessionDataTask *)dataTask
+    didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ dataTask:%@ didBecomeDownloadTask:%@",
+                           [self class], self, session, dataTask, downloadTask);
+  [self setSessionTask:downloadTask];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                   task:(NSURLSessionTask *)task
+    didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+      completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition,
+                                  NSURLCredential *_Nullable credential))handler {
+  [self setSessionTask:task];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ task:%@ didReceiveChallenge:%@", [self class],
+                           self, session, task, challenge);
+
+  GTMSessionFetcherChallengeBlock challengeBlock = self.challengeBlock;
+  if (challengeBlock) {
+    // The fetcher user has provided custom challenge handling.
+    //
+    // We will ultimately need to call back to NSURLSession's handler with the disposition value
+    // for this delegate method even if the user has stopped the fetcher.
+    @synchronized(self) {
+      GTMSessionMonitorSynchronized(self);
+
+      [self invokeOnCallbackQueueAfterUserStopped:YES
+                                            block:^{
+                                              challengeBlock(self, challenge, handler);
+                                            }];
+    }
+  } else {
+    // No challenge block was provided by the client.
+    [self respondToChallenge:challenge completionHandler:handler];
+  }
+}
+
+- (void)respondToChallenge:(NSURLAuthenticationChallenge *)challenge
+         completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition,
+                                     NSURLCredential *_Nullable credential))handler {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSInteger previousFailureCount = [challenge previousFailureCount];
+    if (previousFailureCount <= 2) {
+      NSURLProtectionSpace *protectionSpace = [challenge protectionSpace];
+      NSString *authenticationMethod = [protectionSpace authenticationMethod];
+      if ([authenticationMethod isEqual:NSURLAuthenticationMethodServerTrust]) {
+        // SSL.
+        //
+        // Background sessions seem to require an explicit check of the server trust object
+        // rather than default handling.
+        SecTrustRef serverTrust = challenge.protectionSpace.serverTrust;
+        if (serverTrust == NULL) {
+          // No server trust information is available.
+          handler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+        } else {
+          // Server trust information is available.
+          __auto_type callback = ^(SecTrustRef trustRef, BOOL allow) {
+            if (allow) {
+              NSURLCredential *trustCredential = [NSURLCredential credentialForTrust:trustRef];
+              handler(NSURLSessionAuthChallengeUseCredential, trustCredential);
+            } else {
+              GTMSESSION_LOG_DEBUG(@"Cancelling authentication challenge for %@",
+                                   self->_request.URL);
+              handler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
+            }
+          };
+          if (_allowInvalidServerCertificates) {
+            callback(serverTrust, YES);
+          } else {
+            [[self class] evaluateServerTrust:serverTrust
+                                   forRequest:_request
+                            completionHandler:callback];
+          }
+        }
+        return;
+      }
+
+      NSURLCredential *credential = _credential;
+
+      if ([[challenge protectionSpace] isProxy] && _proxyCredential != nil) {
+        credential = _proxyCredential;
+      }
+
+      if (credential) {
+        handler(NSURLSessionAuthChallengeUseCredential, credential);
+      } else {
+        // The credential is still nil; tell the OS to use the default handling. This is needed
+        // for things that can come out of the keychain (proxies, client certificates, etc.).
+        //
+        // Note: Looking up a credential with NSURLCredentialStorage's
+        // defaultCredentialForProtectionSpace: is *not* the same invoking the handler with
+        // NSURLSessionAuthChallengePerformDefaultHandling. In the case of
+        // NSURLAuthenticationMethodClientCertificate, you can get nil back from
+        // NSURLCredentialStorage, while using this code path instead works.
+        handler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+      }
+
+    } else {
+      // We've failed auth 3 times.  The completion handler will be called with code
+      // NSURLErrorCancelled.
+      handler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
+    }
+  }  // @synchronized(self)
+}
+
+// Return redirect URL based on the original request URL and redirect request URL.
+//
+// Method disallows any scheme changes between the original request URL and redirect request URL
+// aside from "http" to "https". If a change in scheme is detected the redirect URL inherits the
+// scheme from the original request URL.
++ (nullable NSURL *)redirectURLWithOriginalRequestURL:(nullable NSURL *)originalRequestURL
+                                   redirectRequestURL:(nullable NSURL *)redirectRequestURL {
+  // In the case of an NSURLSession redirect, neither URL should ever be nil; as a sanity check
+  // if either is nil return the other URL.
+  if (!redirectRequestURL) return originalRequestURL;
+  if (!originalRequestURL) return redirectRequestURL;
+
+  NSString *originalScheme = originalRequestURL.scheme;
+  NSString *redirectScheme = redirectRequestURL.scheme;
+  BOOL insecureToSecureRedirect =
+      (originalScheme != nil && [originalScheme caseInsensitiveCompare:@"http"] == NSOrderedSame &&
+       redirectScheme != nil && [redirectScheme caseInsensitiveCompare:@"https"] == NSOrderedSame);
+
+  // This can't really be nil for the inputs, but to keep the analyzer happy
+  // for the -caseInsensitiveCompare: call below, give it a value if it were.
+  if (!originalScheme) originalScheme = @"https";
+
+  // Check for changes to the scheme and disallow any changes except for http to https.
+  if (!insecureToSecureRedirect &&
+      (redirectScheme.length != originalScheme.length ||
+       [redirectScheme caseInsensitiveCompare:originalScheme] != NSOrderedSame)) {
+    NSURLComponents *components =
+        [NSURLComponents componentsWithURL:(NSURL *_Nonnull)redirectRequestURL
+                   resolvingAgainstBaseURL:NO];
+    components.scheme = originalScheme;
+    return components.URL;
+  }
+
+  return redirectRequestURL;
+}
+
+// Validate the certificate chain.
+//
+// This may become a public method if it appears to be useful to users.
++ (void)evaluateServerTrust:(SecTrustRef)serverTrust
+                 forRequest:(NSURLRequest *)request
+          completionHandler:(void (^)(SecTrustRef trustRef, BOOL allow))handler {
+  // Retain the trust object to avoid a SecTrustEvaluate() crash on iOS 7.
+  CFRetain(serverTrust);
+
+  // Evaluate the certificate chain.
+  //
+  // The delegate queue may be the main thread. Trust evaluation could cause some
+  // blocking network activity, so we must evaluate async, as documented at
+  // https://developer.apple.com/library/ios/technotes/tn2232/
+  //
+  // We must also avoid multiple uses of the trust object, per docs:
+  // "It is not safe to call this function concurrently with any other function that uses
+  // the same trust management object, or to re-enter this function for the same trust
+  // management object."
+  //
+  // SecTrustEvaluateAsync both does sync execution of Evaluate and calls back on the
+  // queue passed to it, according to at sources in
+  // http://www.opensource.apple.com/source/libsecurity_keychain/libsecurity_keychain-55050.9/lib/SecTrust.cpp
+  // It would require a global serial queue to ensure the evaluate happens only on a
+  // single thread at a time, so we'll stick with using SecTrustEvaluate on a background
+  // thread.
+  dispatch_queue_t evaluateBackgroundQueue =
+      dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+  dispatch_async(evaluateBackgroundQueue, ^{
+    // It looks like the implementation of SecTrustEvaluate() on Mac grabs a global lock,
+    // so it may be redundant for us to also lock, but it's easy to synchronize here
+    // anyway.
+    BOOL shouldAllow;
+#if GTM_SDK_REQUIRES_SECTRUSTEVALUATEWITHERROR
+    CFErrorRef errorRef = NULL;
+    @synchronized([GTMSessionFetcher class]) {
+      GTMSessionMonitorSynchronized([GTMSessionFetcher class]);
+
+      // SecTrustEvaluateWithError handles both the "proceed" and "unspecified" cases,
+      // so it is not necessary to check the trust result the evaluation returns true.
+      shouldAllow = SecTrustEvaluateWithError(serverTrust, &errorRef);
+    }
+
+    if (errorRef) {
+      GTMSESSION_LOG_DEBUG(@"Error %d evaluating trust for %@", (int)CFErrorGetCode(errorRef),
+                           request);
+      CFRelease(errorRef);
+    }
+#else
+    SecTrustResultType trustEval = kSecTrustResultInvalid;
+    OSStatus trustError;
+    @synchronized([GTMSessionFetcher class]) {
+      GTMSessionMonitorSynchronized([GTMSessionFetcher class]);
+
+      trustError = SecTrustEvaluate(serverTrust, &trustEval);
+    }
+    if (trustError != errSecSuccess) {
+      GTMSESSION_LOG_DEBUG(@"Error %d evaluating trust for %@",
+                           (int)trustError, request);
+      shouldAllow = NO;
+    } else {
+      // Having a trust level "unspecified" by the user is the usual result, described at
+      //   https://developer.apple.com/library/mac/qa/qa1360
+      if (trustEval == kSecTrustResultUnspecified
+          || trustEval == kSecTrustResultProceed) {
+        shouldAllow = YES;
+      } else {
+        shouldAllow = NO;
+        GTMSESSION_LOG_DEBUG(@"Challenge SecTrustResultType %u for %@, properties: %@",
+                             trustEval, request.URL.host,
+                             CFBridgingRelease(SecTrustCopyProperties(serverTrust)));
+      }
+    }
+#endif  // GTM_SDK_REQUIRES_SECTRUSTEVALUATEWITHERROR
+    handler(serverTrust, shouldAllow);
+
+    CFRelease(serverTrust);
+  });
+}
+
+- (void)invokeOnCallbackQueueUnlessStopped:(void (^)(void))block {
+  [self invokeOnCallbackQueueAfterUserStopped:NO block:block];
+}
+
+- (void)invokeOnCallbackQueueAfterUserStopped:(BOOL)afterStopped block:(void (^)(void))block {
+  GTMSessionCheckSynchronized(self);
+
+  [self invokeOnCallbackUnsynchronizedQueueAfterUserStopped:afterStopped block:block];
+}
+
+- (void)invokeOnCallbackUnsynchronizedQueueAfterUserStopped:(BOOL)afterStopped
+                                                      block:(void (^)(void))block {
+  // testBlock simulation code may not be synchronizing when this is invoked.
+  [self invokeOnCallbackQueue:_callbackQueue afterUserStopped:afterStopped block:block];
+}
+
+- (void)invokeOnCallbackQueue:(dispatch_queue_t)callbackQueue
+             afterUserStopped:(BOOL)afterStopped
+                        block:(void (^)(void))block {
+  if (callbackQueue) {
+    dispatch_group_async(_callbackGroup, callbackQueue, ^{
+      if (!afterStopped) {
+        NSDate *serviceStoppedAllDate = [self->_service stoppedAllFetchersDate];
+
+        @synchronized(self) {
+          GTMSessionMonitorSynchronized(self);
+
+          // Avoid a race between stopFetching and the callback.
+          if (self->_userStoppedFetching) {
+            return;
+          }
+
+          // Also avoid calling back if the service has stopped all fetchers
+          // since this one was created. The fetcher may have stopped before
+          // stopAllFetchers was invoked, so _userStoppedFetching wasn't set,
+          // but the app still won't expect the callback to fire after
+          // the service's stopAllFetchers was invoked.
+          if (serviceStoppedAllDate &&
+              [self->_initialBeginFetchDate compare:serviceStoppedAllDate] != NSOrderedDescending) {
+            // stopAllFetchers was called after this fetcher began.
+            return;
+          }
+        }  // @synchronized(self)
+      }
+      block();
+    });
+  }
+}
+
+- (void)invokeFetchCallbacksOnCallbackQueueWithData:(nullable NSData *)data
+                                              error:(nullable NSError *)error
+                                        mayDecorate:(BOOL)mayDecorate
+                             shouldReleaseCallbacks:(BOOL)shouldReleaseCallbacks {
+  if (mayDecorate && [_service respondsToSelector:@selector(decorators)]) {
+    NSArray<id<GTMFetcherDecoratorProtocol>> *decorators = _service.decorators;
+    if (decorators.count) {
+      [self applyDecoratorsAtRequestDidFinish:decorators
+                                     withData:data
+                                        error:error
+                              startingAtIndex:0
+                       shouldReleaseCallbacks:shouldReleaseCallbacks];
+      return;
+    }
+  }
+
+  GTMSESSION_LOG_DEBUG(@"GTMSessionFetcher invoking fetch callbacks, data %@, error %@", data,
+                       error);
+
+  // Callbacks will be released in the method stopFetchReleasingCallbacks:
+  GTMSessionFetcherCompletionHandler handler;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    handler = _completionHandler;
+
+    if (handler) {
+      [self invokeOnCallbackQueueUnlessStopped:^{
+        handler(data, error);
+
+        // Post a notification, primarily to allow code to collect responses for
+        // testing.
+        //
+        // The observing code is not likely on the fetcher's callback
+        // queue, so this posts explicitly to the main queue.
+        NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+        if (data) {
+          userInfo[kGTMSessionFetcherCompletionDataKey] = data;
+        }
+        if (error) {
+          userInfo[kGTMSessionFetcherCompletionErrorKey] = error;
+        }
+        [self postNotificationOnMainThreadWithName:kGTMSessionFetcherCompletionInvokedNotification
+                                          userInfo:userInfo
+                                      requireAsync:NO];
+      }];
+    }
+  }  // @synchronized(self)
+
+  if (shouldReleaseCallbacks) {
+    [self releaseCallbacks];
+  }
+}
+
+- (void)postNotificationOnMainThreadWithName:(NSString *)noteName
+                                    userInfo:(nullable NSDictionary *)userInfo
+                                requireAsync:(BOOL)requireAsync {
+  dispatch_block_t postBlock = ^{
+    [[NSNotificationCenter defaultCenter] postNotificationName:noteName
+                                                        object:self
+                                                      userInfo:userInfo];
+  };
+
+  if ([NSThread isMainThread] && !requireAsync) {
+    // Post synchronously for compatibility with older code using the fetcher.
+
+    // Avoid calling out to other code from inside a sync block to avoid risk
+    // of a deadlock or of recursive sync.
+    GTMSessionCheckNotSynchronized(self);
+
+    postBlock();
+  } else {
+    dispatch_async(dispatch_get_main_queue(), postBlock);
+  }
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 task:(NSURLSessionTask *)uploadTask
+    needNewBodyStream:(void (^)(NSInputStream *_Nullable bodyStream))completionHandler {
+  [self setSessionTask:uploadTask];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ task:%@ needNewBodyStream:", [self class], self,
+                           session, uploadTask);
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSessionFetcherBodyStreamProvider provider = _bodyStreamProvider;
+#if !STRIP_GTM_FETCH_LOGGING
+    if ([self respondsToSelector:@selector(loggedStreamProviderForStreamProvider:)]) {
+      provider = [self performSelector:@selector(loggedStreamProviderForStreamProvider:)
+                            withObject:provider];
+    }
+#endif
+    if (provider) {
+      [self invokeOnCallbackQueueUnlessStopped:^{
+        provider(completionHandler);
+      }];
+    } else {
+      GTMSESSION_ASSERT_DEBUG(NO, @"NSURLSession expects a stream provider");
+
+      completionHandler(nil);
+    }
+  }  // @synchronized(self)
+}
+
+- (void)URLSession:(NSURLSession *)session
+                        task:(NSURLSessionTask *)task
+             didSendBodyData:(int64_t)bytesSent
+              totalBytesSent:(int64_t)totalBytesSent
+    totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend {
+  [self setSessionTask:task];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ task:%@ didSendBodyData:%lld"
+                           @" totalBytesSent:%lld totalBytesExpectedToSend:%lld",
+                           [self class], self, session, task, bytesSent, totalBytesSent,
+                           totalBytesExpectedToSend);
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (!_sendProgressBlock) {
+      return;
+    }
+    // We won't hold on to send progress block; it's ok to not send it if the upload finishes.
+    [self invokeOnCallbackQueueUnlessStopped:^{
+      GTMSessionFetcherSendProgressBlock progressBlock;
+      @synchronized(self) {
+        GTMSessionMonitorSynchronized(self);
+
+        progressBlock = self->_sendProgressBlock;
+      }
+      if (progressBlock) {
+        progressBlock(bytesSent, totalBytesSent, totalBytesExpectedToSend);
+      }
+    }];
+  }  // @synchronized(self)
+}
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveData:(NSData *)data {
+  [self setSessionTask:dataTask];
+  NSUInteger bufferLength = data.length;
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ dataTask:%@ didReceiveData:%p (%llu bytes)",
+                           [self class], self, session, dataTask, data,
+                           (unsigned long long)bufferLength);
+  if (bufferLength == 0) {
+    // Observed on completing an out-of-process upload.
+    return;
+  }
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSessionFetcherAccumulateDataBlock accumulateBlock = _accumulateDataBlock;
+    if (accumulateBlock) {
+      // Let the client accumulate the data.
+      _downloadedLength += bufferLength;
+      [self invokeOnCallbackQueueUnlessStopped:^{
+        accumulateBlock(data);
+      }];
+    } else if (!_userStoppedFetching) {
+      // Append to the mutable data buffer unless the fetch has been cancelled.
+
+      // Resumed upload tasks may not yet have a data buffer.
+      if (_downloadedData == nil) {
+        // Using NSClassFromString for iOS 6 compatibility.
+        GTMSESSION_ASSERT_DEBUG(
+            ![dataTask isKindOfClass:NSClassFromString(@"NSURLSessionDownloadTask")],
+            @"Resumed download tasks should not receive data bytes");
+        _downloadedData = [[NSMutableData alloc] init];
+      }
+
+      [_downloadedData appendData:data];
+      _downloadedLength = (int64_t)_downloadedData.length;
+
+      // We won't hold on to receivedProgressBlock here; it's ok to not send
+      // it if the transfer finishes.
+      if (_receivedProgressBlock) {
+        [self invokeOnCallbackQueueUnlessStopped:^{
+          GTMSessionFetcherReceivedProgressBlock progressBlock;
+          @synchronized(self) {
+            GTMSessionMonitorSynchronized(self);
+
+            progressBlock = self->_receivedProgressBlock;
+          }
+          if (progressBlock) {
+            progressBlock((int64_t)bufferLength, self->_downloadedLength);
+          }
+        }];
+      }
+    }
+  }  // @synchronized(self)
+}
+
+- (void)URLSession:(NSURLSession *)session
+             dataTask:(NSURLSessionDataTask *)dataTask
+    willCacheResponse:(NSCachedURLResponse *)proposedResponse
+    completionHandler:(void (^)(NSCachedURLResponse *cachedResponse))completionHandler
+    GTM_SWIFT_DISABLE_ASYNC {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ dataTask:%@ willCacheResponse:%@ %@", [self class],
+                           self, session, dataTask, proposedResponse, proposedResponse.response);
+  GTMSessionFetcherWillCacheURLResponseBlock callback;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    callback = _willCacheURLResponseBlock;
+
+    if (callback) {
+      [self invokeOnCallbackQueueAfterUserStopped:YES
+                                            block:^{
+                                              callback(proposedResponse, completionHandler);
+                                            }];
+    }
+  }  // @synchronized(self)
+  if (!callback) {
+    completionHandler(proposedResponse);
+  }
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 downloadTask:(NSURLSessionDownloadTask *)downloadTask
+                 didWriteData:(int64_t)bytesWritten
+            totalBytesWritten:(int64_t)totalBytesWritten
+    totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ downloadTask:%@ didWriteData:%lld"
+                           @" bytesWritten:%lld totalBytesExpectedToWrite:%lld",
+                           [self class], self, session, downloadTask, bytesWritten,
+                           totalBytesWritten, totalBytesExpectedToWrite);
+  [self setSessionTask:downloadTask];
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if ((totalBytesExpectedToWrite != NSURLSessionTransferSizeUnknown) &&
+        (totalBytesExpectedToWrite < totalBytesWritten)) {
+      // Have observed cases were bytesWritten == totalBytesExpectedToWrite,
+      // but totalBytesWritten > totalBytesExpectedToWrite, so setting to unkown in these cases.
+      totalBytesExpectedToWrite = NSURLSessionTransferSizeUnknown;
+    }
+
+    GTMSessionFetcherDownloadProgressBlock progressBlock;
+    progressBlock = self->_downloadProgressBlock;
+    if (progressBlock) {
+      [self invokeOnCallbackQueueUnlessStopped:^{
+        progressBlock(bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
+      }];
+    }
+  }  // @synchronized(self)
+}
+
+- (void)URLSession:(NSURLSession *)session
+          downloadTask:(NSURLSessionDownloadTask *)downloadTask
+     didResumeAtOffset:(int64_t)fileOffset
+    expectedTotalBytes:(int64_t)expectedTotalBytes {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ downloadTask:%@ didResumeAtOffset:%lld"
+                           @" expectedTotalBytes:%lld",
+                           [self class], self, session, downloadTask, fileOffset,
+                           expectedTotalBytes);
+  [self setSessionTask:downloadTask];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 downloadTask:(NSURLSessionDownloadTask *)downloadTask
+    didFinishDownloadingToURL:(NSURL *)downloadLocationURL {
+  // Download may have relaunched app, so update _sessionTask.
+  [self setSessionTask:downloadTask];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ downloadTask:%@ didFinishDownloadingToURL:%@",
+                           [self class], self, session, downloadTask, downloadLocationURL);
+  NSNumber *fileSizeNum;
+  [downloadLocationURL getResourceValue:&fileSizeNum forKey:NSURLFileSizeKey error:NULL];
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSURL *destinationURL = _destinationFileURL;
+
+    _downloadedLength = fileSizeNum.longLongValue;
+
+    // Overwrite any previous file at the destination URL.
+    NSFileManager *fileMgr = [NSFileManager defaultManager];
+    NSError *removeError;
+    if (![fileMgr removeItemAtURL:destinationURL error:&removeError] &&
+        removeError.code != NSFileNoSuchFileError) {
+      GTMSESSION_LOG_DEBUG(@"Could not remove previous file at %@ due to %@",
+                           downloadLocationURL.path, removeError);
+    }
+
+    NSInteger statusCode = [self statusCodeUnsynchronized];
+    if (statusCode < 200 || statusCode > 399) {
+      // In OS X 10.11, the response body is written to a file even on a server
+      // status error.  For convenience of the fetcher client, we'll skip saving the
+      // downloaded body to the destination URL so that clients do not need to know
+      // to delete the file following fetch errors.
+      GTMSESSION_LOG_DEBUG(@"Abandoning download due to status %ld, file %@", (long)statusCode,
+                           downloadLocationURL.path);
+
+      // On error code, add the contents of the temporary file to _downloadTaskErrorData
+      // This way fetcher clients have access to error details possibly passed by the server.
+      if (_downloadedLength > 0 && _downloadedLength <= kMaximumDownloadErrorDataLength) {
+        _downloadTaskErrorData = [NSData dataWithContentsOfURL:downloadLocationURL];
+      } else if (_downloadedLength > kMaximumDownloadErrorDataLength) {
+        GTMSESSION_LOG_DEBUG(@"Download error data for file %@ not passed to userInfo due to size "
+                             @"%lld",
+                             downloadLocationURL.path, _downloadedLength);
+      }
+    } else {
+      NSError *moveError;
+      NSURL *destinationFolderURL = [destinationURL URLByDeletingLastPathComponent];
+      BOOL didMoveDownload = NO;
+      if ([fileMgr createDirectoryAtURL:destinationFolderURL
+              withIntermediateDirectories:YES
+                               attributes:nil
+                                    error:&moveError]) {
+        didMoveDownload = [fileMgr moveItemAtURL:downloadLocationURL
+                                           toURL:destinationURL
+                                           error:&moveError];
+      }
+      if (!didMoveDownload) {
+        _downloadFinishedError = moveError;
+      }
+      GTM_LOG_BACKGROUND_SESSION(@"%@ %p Moved download from \"%@\" to \"%@\"  %@", [self class],
+                                 self, downloadLocationURL.path, destinationURL.path,
+                                 error ? error : @"");
+    }
+  }  // @synchronized(self)
+}
+
+/* Sent as the last message related to a specific task.  Error may be
+ * nil, which implies that no error occurred and this task is complete.
+ */
+- (void)URLSession:(NSURLSession *)session
+                    task:(NSURLSessionTask *)task
+    didCompleteWithError:(NSError *)error {
+  [self setSessionTask:task];
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ task:%@ didCompleteWithError:%@", [self class],
+                           self, session, task, error);
+
+  NSInteger status = self.statusCode;
+  BOOL forceAssumeRetry = NO;
+  BOOL succeeded = NO;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+#if !GTM_DISABLE_FETCHER_TEST_BLOCK
+    // The task is never resumed when a testBlock is used. When the session is destroyed,
+    // we should ignore the callback, since the testBlock support code itself invokes
+    // shouldRetryNowForStatus: and finishWithError:shouldRetry:
+    if (_isUsingTestBlock) return;
+#endif
+
+    if (error == nil) {
+      error = _downloadFinishedError;
+    }
+    succeeded = (error == nil && status >= 0 && status < 300);
+    if (succeeded) {
+      // Succeeded.
+      _bodyLength = task.countOfBytesSent;
+    }
+  }  // @synchronized(self)
+
+  if (succeeded) {
+    [self finishWithError:nil shouldRetry:NO];
+    return;
+  }
+  // For background redirects, no delegate method is called, so we cannot restore a stripped
+  // Authorization header, so if a 403 ("Forbidden") was generated due to a missing OAuth 2 header,
+  // set the current request's URL to the redirected URL, so we in effect restore the Authorization
+  // header.
+  if ((status == 403) && self.usingBackgroundSession) {
+    NSURL *redirectURL = self.response.URL;
+    NSURLRequest *request = self.request;
+    if (![request.URL isEqual:redirectURL]) {
+      NSString *authorizationHeader = [request.allHTTPHeaderFields objectForKey:@"Authorization"];
+      if (authorizationHeader != nil) {
+        NSMutableURLRequest *mutableRequest = [request mutableCopy];
+        mutableRequest.URL = redirectURL;
+        [self updateMutableRequest:mutableRequest];
+        // Avoid assuming the session is still valid.
+        self.session = nil;
+        forceAssumeRetry = YES;
+      }
+    }
+  }
+
+  // If invalidating the session was deferred in stopFetchReleasingCallbacks: then do it now.
+  NSURLSession *oldSession = self.sessionNeedingInvalidation;
+  if (oldSession) {
+    [self setSessionNeedingInvalidation:NULL];
+    [oldSession finishTasksAndInvalidate];
+  }
+
+  // Failed.
+  [self shouldRetryNowForStatus:status
+                          error:error
+               forceAssumeRetry:forceAssumeRetry
+                       response:^(BOOL shouldRetry) {
+                         [self finishWithError:error shouldRetry:shouldRetry];
+                       }];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics
+    API_AVAILABLE(ios(10.0), macosx(10.12), tvos(10.0), watchos(6.0)) {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+    GTMSessionFetcherMetricsCollectionBlock metricsCollectionBlock = _metricsCollectionBlock;
+    if (metricsCollectionBlock) {
+      [self invokeOnCallbackQueueUnlessStopped:^{
+        metricsCollectionBlock(metrics);
+      }];
+    }
+  }
+}
+
+#if TARGET_OS_IPHONE
+- (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSessionDidFinishEventsForBackgroundURLSession:%@",
+                           [self class], self, session);
+  [self removePersistedBackgroundSessionFromDefaults];
+
+  GTMSessionFetcherSystemCompletionHandler handler;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    handler = self.systemCompletionHandler;
+    self.systemCompletionHandler = nil;
+  }  // @synchronized(self)
+  if (handler) {
+    GTM_LOG_BACKGROUND_SESSION(@"%@ %p Calling system completionHandler", [self class], self);
+    handler();
+
+    @synchronized(self) {
+      GTMSessionMonitorSynchronized(self);
+
+      NSURLSession *oldSession = _session;
+      _session = nil;
+      if (_shouldInvalidateSession) {
+        [oldSession finishTasksAndInvalidate];
+      }
+    }  // @synchronized(self)
+  }
+}
+#endif
+
+- (void)URLSession:(NSURLSession *)session didBecomeInvalidWithError:(nullable NSError *)error {
+  // This may happen repeatedly for retries.  On authentication callbacks, the retry
+  // may begin before the prior session sends the didBecomeInvalid delegate message.
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ didBecomeInvalidWithError:%@", [self class], self,
+                           session, error);
+  if (session == (NSURLSession *)self.session) {
+    GTM_LOG_SESSION_DELEGATE(@"  Unexpected retained invalid session: %@", session);
+    self.session = nil;
+  }
+}
+
+- (void)finishWithError:(nullable NSError *)error shouldRetry:(BOOL)shouldRetry {
+  [self removePersistedBackgroundSessionFromDefaults];
+
+  BOOL shouldStopFetching = YES;
+  NSData *downloadedData = nil;
+#if !STRIP_GTM_FETCH_LOGGING
+  BOOL shouldDeferLogging = NO;
+#endif
+  BOOL shouldBeginRetryTimer = NO;
+  NSInteger status = [self statusCode];
+  NSURL *destinationURL = self.destinationFileURL;
+
+  BOOL fetchSucceeded = (error == nil && status >= 0 && status < 300);
+
+#if !STRIP_GTM_FETCH_LOGGING
+  if (!fetchSucceeded) {
+    if (!shouldDeferLogging && !self.hasLoggedError) {
+      [self logNowWithError:error];
+      self.hasLoggedError = YES;
+    }
+  }
+#endif  // !STRIP_GTM_FETCH_LOGGING
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+#if !STRIP_GTM_FETCH_LOGGING
+    shouldDeferLogging = _deferResponseBodyLogging;
+#endif
+    if (fetchSucceeded) {
+      // Success
+      if ((_downloadedData.length > 0) && (destinationURL != nil)) {
+        // Overwrite any previous file at the destination URL.
+        NSFileManager *fileMgr = [NSFileManager defaultManager];
+        [fileMgr removeItemAtURL:destinationURL error:NULL];
+        NSURL *destinationFolderURL = [destinationURL URLByDeletingLastPathComponent];
+        BOOL didMoveDownload = NO;
+        if ([fileMgr createDirectoryAtURL:destinationFolderURL
+                withIntermediateDirectories:YES
+                                 attributes:nil
+                                      error:&error]) {
+          didMoveDownload = [_downloadedData writeToURL:destinationURL
+                                                options:NSDataWritingAtomic
+                                                  error:&error];
+        }
+        if (didMoveDownload) {
+          _downloadedData = nil;
+        } else {
+          _downloadFinishedError = error;
+        }
+      }
+      downloadedData = _downloadedData;
+    } else {
+      // Unsuccessful with error or status over 300. Retry or notify the delegate of failure
+      if (shouldRetry) {
+        // Retrying.
+        shouldBeginRetryTimer = YES;
+        shouldStopFetching = NO;
+      } else {
+        if (error == nil) {
+          // Create an error.
+          NSDictionary *userInfo = GTMErrorUserInfoForData(
+              _downloadedData.length > 0 ? _downloadedData : _downloadTaskErrorData,
+              [self responseHeadersUnsynchronized]);
+
+          error = [NSError errorWithDomain:kGTMSessionFetcherStatusDomain
+                                      code:status
+                                  userInfo:userInfo];
+        } else {
+          // If the error had resume data, and the client supplied a resume block, pass the
+          // data to the client.
+          void (^resumeBlock)(NSData *) = _resumeDataBlock;
+          _resumeDataBlock = nil;
+          if (resumeBlock) {
+            NSData *resumeData = [error.userInfo objectForKey:NSURLSessionDownloadTaskResumeData];
+            if (resumeData) {
+              [self invokeOnCallbackQueueAfterUserStopped:YES
+                                                    block:^{
+                                                      resumeBlock(resumeData);
+                                                    }];
+            }
+          }
+        }
+        if (_downloadedData.length > 0) {
+          downloadedData = _downloadedData;
+        }
+        // If the error occurred after retries, report the number and duration of the
+        // retries. This provides a clue to a developer looking at the error description
+        // that the fetcher did retry before failing with this error.
+        if (_retryCount > 0) {
+          NSMutableDictionary *userInfoWithRetries =
+              [NSMutableDictionary dictionaryWithDictionary:(NSDictionary *)error.userInfo];
+          NSTimeInterval timeSinceInitialRequest = -[_initialRequestDate timeIntervalSinceNow];
+          [userInfoWithRetries setObject:@(timeSinceInitialRequest)
+                                  forKey:kGTMSessionFetcherElapsedIntervalWithRetriesKey];
+          [userInfoWithRetries setObject:@(_retryCount)
+                                  forKey:kGTMSessionFetcherNumberOfRetriesDoneKey];
+          error = [NSError errorWithDomain:(NSString *)error.domain
+                                      code:error.code
+                                  userInfo:userInfoWithRetries];
+        }
+      }
+    }
+  }  // @synchronized(self)
+
+  if (shouldBeginRetryTimer) {
+    [self beginRetryTimer];
+  }
+
+  // We want to send the stop notification before calling the delegate's
+  // callback selector, since the callback selector may release all of
+  // the fetcher properties that the client is using to track the fetches.
+  //
+  // We'll also stop now so that, to any observers watching the notifications,
+  // it doesn't look like our wait for a retry (which may be long,
+  // 30 seconds or more) is part of the network activity.
+  [self sendStopNotificationIfNeeded];
+
+  if (shouldStopFetching) {
+    // The upload subclass doesn't want to release callbacks until upload chunks have completed.
+    BOOL shouldRelease = [self shouldReleaseCallbacksUponCompletion];
+    [self invokeFetchCallbacksOnCallbackQueueWithData:downloadedData
+                                                error:error
+                                          mayDecorate:YES
+                               shouldReleaseCallbacks:shouldRelease];
+    [self stopFetchReleasingCallbacks:NO];
+  }
+
+#if !STRIP_GTM_FETCH_LOGGING
+  // _hasLoggedError is only set by this method
+  if (!shouldDeferLogging && !_hasLoggedError) {
+    [self logNowWithError:error];
+  }
+#endif
+}
+
+- (BOOL)shouldReleaseCallbacksUponCompletion {
+  // A subclass can override this to keep callbacks around after the
+  // connection has finished successfully
+  return YES;
+}
+
+- (void)logNowWithError:(nullable NSError *)error {
+  GTMSessionCheckNotSynchronized(self);
+
+  // If the logging category is available, then log the current request,
+  // response, data, and error
+  if ([self respondsToSelector:@selector(logFetchWithError:)]) {
+    [self performSelector:@selector(logFetchWithError:) withObject:error];
+  }
+}
+
+#pragma mark Retries
+
+- (BOOL)isRetryError:(NSError *)error {
+  struct RetryRecord {
+    __unsafe_unretained NSString *const domain;
+    NSInteger code;
+  };
+
+  struct RetryRecord retries[] = {
+      {kGTMSessionFetcherStatusDomain, 408},  // request timeout
+      {kGTMSessionFetcherStatusDomain, 502},  // failure gatewaying to another server
+      {kGTMSessionFetcherStatusDomain, 503},  // service unavailable
+      {kGTMSessionFetcherStatusDomain, 504},  // request timeout
+      {NSURLErrorDomain, NSURLErrorTimedOut},
+      {NSURLErrorDomain, NSURLErrorNetworkConnectionLost},
+      {nil, 0}};
+
+  // NSError's isEqual always returns false for equal but distinct instances
+  // of NSError, so we have to compare the domain and code values explicitly
+  NSString *domain = error.domain;
+  NSInteger code = error.code;
+  for (int idx = 0; retries[idx].domain != nil; idx++) {
+    if (code == retries[idx].code && [domain isEqual:retries[idx].domain]) {
+      return YES;
+    }
+  }
+  return NO;
+}
+
+// shouldRetryNowForStatus:error: responds with YES if the user has enabled retries
+// and the status or error is one that is suitable for retrying.  "Suitable"
+// means either the isRetryError:'s list contains the status or error, or the
+// user's retry block is present and returns YES when called, or the
+// authorizer may be able to fix.
+- (void)shouldRetryNowForStatus:(NSInteger)status
+                          error:(NSError *)error
+               forceAssumeRetry:(BOOL)forceAssumeRetry
+                       response:(GTMSessionFetcherRetryResponse)response {
+  // Determine if a refreshed authorizer may avoid an authorization error
+  BOOL willRetry = NO;
+
+  // We assume _authorizer is immutable after beginFetch, and _hasAttemptedAuthRefresh is modified
+  // only in this method, and this method is invoked on the serial delegate queue.
+  //
+  // We want to avoid calling the authorizer from inside a sync block.
+  BOOL isFirstAuthError = (_authorizer != nil && !_hasAttemptedAuthRefresh &&
+                           status == GTMSessionFetcherStatusUnauthorized);  // 401
+
+  BOOL hasPrimed = NO;
+  if (isFirstAuthError) {
+    if ([_authorizer respondsToSelector:@selector(primeForRefresh)]) {
+      hasPrimed = [_authorizer primeForRefresh];
+    }
+  }
+
+  BOOL shouldRetryForAuthRefresh = NO;
+  if (hasPrimed) {
+    shouldRetryForAuthRefresh = YES;
+    _hasAttemptedAuthRefresh = YES;
+    [self updateRequestValue:nil forHTTPHeaderField:@"Authorization"];
+  }
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    BOOL shouldDoRetry = [self isRetryEnabledUnsynchronized];
+    if (shouldDoRetry && ![self hasRetryAfterInterval]) {
+      // Determine if we're doing exponential backoff retries
+      shouldDoRetry = [self nextRetryIntervalUnsynchronized] < _maxRetryInterval;
+
+      if (shouldDoRetry) {
+        // If an explicit max retry interval was set, we expect repeated backoffs to take
+        // up to roughly twice that for repeated fast failures.  If the initial attempt is
+        // already more than 3 times the max retry interval, then failures have taken a long time
+        // (such as from network timeouts) so don't retry again to avoid the app becoming
+        // unexpectedly unresponsive.
+        if (_maxRetryInterval > 0) {
+          NSTimeInterval maxAllowedIntervalBeforeRetry = _maxRetryInterval * 3;
+          NSTimeInterval timeSinceInitialRequest = -[_initialRequestDate timeIntervalSinceNow];
+          if (timeSinceInitialRequest > maxAllowedIntervalBeforeRetry) {
+            shouldDoRetry = NO;
+          }
+        }
+      }
+    }
+    BOOL canRetry = shouldRetryForAuthRefresh || forceAssumeRetry || shouldDoRetry;
+    if (canRetry) {
+      NSDictionary *userInfo =
+          GTMErrorUserInfoForData(_downloadedData, [self responseHeadersUnsynchronized]);
+      NSError *statusError = [NSError errorWithDomain:kGTMSessionFetcherStatusDomain
+                                                 code:status
+                                             userInfo:userInfo];
+      if (error == nil) {
+        error = statusError;
+      }
+      willRetry = shouldRetryForAuthRefresh || forceAssumeRetry || [self isRetryError:error] ||
+                  ((error != statusError) && [self isRetryError:statusError]);
+
+      // If the user has installed a retry callback, consult that.
+      GTMSessionFetcherRetryBlock retryBlock = _retryBlock;
+      if (retryBlock) {
+        [self invokeOnCallbackQueueUnlessStopped:^{
+          retryBlock(willRetry, error, response);
+        }];
+        return;
+      }
+    }
+  }  // @synchronized(self)
+  response(willRetry);
+}
+
+- (BOOL)hasRetryAfterInterval {
+  GTMSessionCheckSynchronized(self);
+
+  NSDictionary *responseHeaders = [self responseHeadersUnsynchronized];
+  NSString *retryAfterValue = [responseHeaders valueForKey:@"Retry-After"];
+  return (retryAfterValue != nil);
+}
+
+- (NSTimeInterval)retryAfterInterval {
+  GTMSessionCheckSynchronized(self);
+
+  NSDictionary *responseHeaders = [self responseHeadersUnsynchronized];
+  NSString *retryAfterValue = [responseHeaders valueForKey:@"Retry-After"];
+  if (retryAfterValue == nil) {
+    return 0;
+  }
+  // Retry-After formatted as HTTP-date | delta-seconds
+  // Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+  NSDateFormatter *rfc1123DateFormatter = [[NSDateFormatter alloc] init];
+  rfc1123DateFormatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
+  rfc1123DateFormatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
+  rfc1123DateFormatter.dateFormat = @"EEE',' dd MMM yyyy HH':'mm':'ss z";
+  NSDate *retryAfterDate = [rfc1123DateFormatter dateFromString:retryAfterValue];
+  NSTimeInterval retryAfterInterval =
+      (retryAfterDate != nil) ? retryAfterDate.timeIntervalSinceNow : retryAfterValue.intValue;
+  retryAfterInterval = MAX(0, retryAfterInterval);
+  return retryAfterInterval;
+}
+
+- (void)beginRetryTimer {
+  if (![NSThread isMainThread]) {
+    // Defer creating and starting the timer until we're on the main thread to ensure it has
+    // a run loop.
+    dispatch_group_async(_callbackGroup, dispatch_get_main_queue(), ^{
+      [self beginRetryTimer];
+    });
+    return;
+  }
+
+  [self destroyRetryTimer];
+
+#if GTM_BACKGROUND_TASK_FETCHING
+  // Don't keep a background task active while awaiting retry, which can lead to the
+  // app exceeding the allotted time for keeping the background task open, causing the
+  // system to terminate the app. When the retry starts, a new background task will
+  // be created.
+  [self endBackgroundTask];
+#endif  // GTM_BACKGROUND_TASK_FETCHING
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSTimeInterval nextInterval = [self nextRetryIntervalUnsynchronized];
+    NSTimeInterval maxInterval = _maxRetryInterval;
+    NSTimeInterval newInterval = MIN(nextInterval, (maxInterval > 0 ? maxInterval : DBL_MAX));
+    NSTimeInterval newIntervalTolerance = (newInterval / 10) > 1.0 ?: 1.0;
+
+    _lastRetryInterval = newInterval;
+
+    _retryTimer = [NSTimer timerWithTimeInterval:newInterval
+                                          target:self
+                                        selector:@selector(retryTimerFired:)
+                                        userInfo:nil
+                                         repeats:NO];
+    _retryTimer.tolerance = newIntervalTolerance;
+    [[NSRunLoop mainRunLoop] addTimer:_retryTimer forMode:NSDefaultRunLoopMode];
+  }  // @synchronized(self)
+
+  [self postNotificationOnMainThreadWithName:kGTMSessionFetcherRetryDelayStartedNotification
+                                    userInfo:nil
+                                requireAsync:NO];
+}
+
+- (void)retryTimerFired:(NSTimer *)timer {
+  [self destroyRetryTimer];
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _retryCount++;
+  }  // @synchronized(self)
+
+  NSOperationQueue *queue = self.sessionDelegateQueue;
+  [queue addOperationWithBlock:^{
+    [self retryFetch];
+  }];
+}
+
+- (void)destroyRetryTimer {
+  BOOL shouldNotify = NO;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_retryTimer) {
+      [_retryTimer invalidate];
+      _retryTimer = nil;
+      shouldNotify = YES;
+    }
+  }
+
+  if (shouldNotify) {
+    [self postNotificationOnMainThreadWithName:kGTMSessionFetcherRetryDelayStoppedNotification
+                                      userInfo:nil
+                                  requireAsync:NO];
+  }
+}
+
+- (NSUInteger)retryCount {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _retryCount;
+  }  // @synchronized(self)
+}
+
+- (NSTimeInterval)nextRetryInterval {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSTimeInterval interval = [self nextRetryIntervalUnsynchronized];
+    return interval;
+  }  // @synchronized(self)
+}
+
+- (NSTimeInterval)nextRetryIntervalUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  NSInteger statusCode = [self statusCodeUnsynchronized];
+  if ((statusCode == 503) && [self hasRetryAfterInterval]) {
+    NSTimeInterval secs = [self retryAfterInterval];
+    return secs;
+  }
+  // The next wait interval is the factor (2.0) times the last interval,
+  // but never less than the minimum interval.
+  NSTimeInterval secs = _lastRetryInterval * _retryFactor;
+  if (_maxRetryInterval > 0) {
+    secs = MIN(secs, _maxRetryInterval);
+  }
+  secs = MAX(secs, _minRetryInterval);
+
+  return secs;
+}
+
+- (NSTimer *)retryTimer {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _retryTimer;
+  }  // @synchronized(self)
+}
+
+- (BOOL)isRetryEnabled {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _isRetryEnabled;
+  }  // @synchronized(self)
+}
+
+- (BOOL)isRetryEnabledUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  return _isRetryEnabled;
+}
+
+- (void)setRetryEnabled:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (flag && !_isRetryEnabled) {
+      // We defer initializing these until the user calls setRetryEnabled
+      // to avoid using the random number generator if it's not needed.
+      // However, this means min and max intervals for this fetcher are reset
+      // as a side effect of calling setRetryEnabled.
+      //
+      // Make an initial retry interval random between 1.0 and 2.0 seconds
+      _minRetryInterval = InitialMinRetryInterval();
+      _maxRetryInterval = kUnsetMaxRetryInterval;
+      _retryFactor = 2.0;
+      _lastRetryInterval = 0.0;
+    }
+    _isRetryEnabled = flag;
+  }  // @synchronized(self)
+};
+
+- (NSTimeInterval)maxRetryInterval {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _maxRetryInterval;
+  }  // @synchronized(self)
+}
+
+- (void)setMaxRetryInterval:(NSTimeInterval)secs {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (secs > 0) {
+      _maxRetryInterval = secs;
+    } else {
+      _maxRetryInterval = kUnsetMaxRetryInterval;
+    }
+  }  // @synchronized(self)
+}
+
+- (double)minRetryInterval {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _minRetryInterval;
+  }  // @synchronized(self)
+}
+
+- (void)setMinRetryInterval:(NSTimeInterval)secs {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (secs > 0) {
+      _minRetryInterval = secs;
+    } else {
+      // Set min interval to a random value between 1.0 and 2.0 seconds
+      // so that if multiple clients start retrying at the same time, they'll
+      // repeat at different times and avoid overloading the server
+      _minRetryInterval = InitialMinRetryInterval();
+    }
+  }  // @synchronized(self)
+}
+
+#pragma mark iOS System Completion Handlers
+
+#if TARGET_OS_IPHONE
+static NSMutableDictionary *gSystemCompletionHandlers = nil;
+
+- (nullable GTMSessionFetcherSystemCompletionHandler)systemCompletionHandler {
+  return [[self class] systemCompletionHandlerForSessionIdentifier:_sessionIdentifier];
+}
+
+- (void)setSystemCompletionHandler:
+    (nullable GTMSessionFetcherSystemCompletionHandler)systemCompletionHandler {
+  [[self class] setSystemCompletionHandler:systemCompletionHandler
+                      forSessionIdentifier:_sessionIdentifier];
+}
+
++ (void)setSystemCompletionHandler:
+            (nullable GTMSessionFetcherSystemCompletionHandler)systemCompletionHandler
+              forSessionIdentifier:(NSString *)sessionIdentifier {
+  if (!sessionIdentifier) {
+    NSLog(@"%s with nil identifier", __PRETTY_FUNCTION__);
+    return;
+  }
+
+  @synchronized([GTMSessionFetcher class]) {
+    if (gSystemCompletionHandlers == nil && systemCompletionHandler != nil) {
+      gSystemCompletionHandlers = [[NSMutableDictionary alloc] init];
+    }
+    // Use setValue: to remove the object if completionHandler is nil.
+    [gSystemCompletionHandlers setValue:systemCompletionHandler forKey:sessionIdentifier];
+  }
+}
+
++ (nullable GTMSessionFetcherSystemCompletionHandler)systemCompletionHandlerForSessionIdentifier:
+    (NSString *)sessionIdentifier {
+  if (!sessionIdentifier) {
+    return nil;
+  }
+  @synchronized([GTMSessionFetcher class]) {
+    return [gSystemCompletionHandlers objectForKey:sessionIdentifier];
+  }
+}
+#endif  // TARGET_OS_IPHONE
+
+#pragma mark Getters and Setters
+
+// clang-format off
+// Don't re-format the @synthesize blocks:
+@synthesize downloadResumeData = _downloadResumeData,
+            configuration = _configuration,
+            configurationBlock = _configurationBlock,
+            sessionTask = _sessionTask,
+            wasCreatedFromBackgroundSession = _wasCreatedFromBackgroundSession,
+            clientWillReconnectBackgroundSession = _clientWillReconnectBackgroundSession,
+            sessionUserInfo = _sessionUserInfo,
+            taskDescription = _taskDescription,
+            taskPriority = _taskPriority,
+            usingBackgroundSession = _usingBackgroundSession,
+            canShareSession = _canShareSession,
+            completionHandler = _completionHandler,
+            credential = _credential,
+            proxyCredential = _proxyCredential,
+            bodyData = _bodyData,
+            bodyLength = _bodyLength,
+            service = _service,
+            serviceHost = _serviceHost,
+            accumulateDataBlock = _accumulateDataBlock,
+            receivedProgressBlock = _receivedProgressBlock,
+            downloadProgressBlock = _downloadProgressBlock,
+            resumeDataBlock = _resumeDataBlock,
+            didReceiveResponseBlock = _didReceiveResponseBlock,
+            challengeBlock = _challengeBlock,
+            willRedirectBlock = _willRedirectBlock,
+            sendProgressBlock = _sendProgressBlock,
+            willCacheURLResponseBlock = _willCacheURLResponseBlock,
+            retryBlock = _retryBlock,
+            metricsCollectionBlock = _metricsCollectionBlock,
+            retryFactor = _retryFactor,
+            allowedInsecureSchemes = _allowedInsecureSchemes,
+            allowLocalhostRequest = _allowLocalhostRequest,
+            allowInvalidServerCertificates = _allowInvalidServerCertificates,
+            cookieStorage = _cookieStorage,
+            callbackQueue = _callbackQueue,
+            initialBeginFetchDate = _initialBeginFetchDate,
+            testBlock = _testBlock,
+            testBlockAccumulateDataChunkCount = _testBlockAccumulateDataChunkCount,
+            comment = _comment,
+            log = _log;
+
+#if !STRIP_GTM_FETCH_LOGGING
+@synthesize redirectedFromURL = _redirectedFromURL,
+            logRequestBody = _logRequestBody,
+            logResponseBody = _logResponseBody,
+            hasLoggedError = _hasLoggedError;
+#endif
+
+#if GTM_BACKGROUND_TASK_FETCHING
+@synthesize backgroundTaskIdentifier = _backgroundTaskIdentifier,
+            skipBackgroundTask = _skipBackgroundTask;
+#endif
+// clang-format on
+
+- (nullable NSURLRequest *)request {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_request copy];
+  }  // @synchronized(self)
+}
+
+- (void)setRequest:(nullable NSURLRequest *)request {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (![self isFetchingUnsynchronized]) {
+      _request = [request mutableCopy];
+    } else {
+      GTMSESSION_ASSERT_DEBUG(0, @"request may not be set after beginFetch has been invoked");
+    }
+  }  // @synchronized(self)
+}
+
+- (nullable NSMutableURLRequest *)mutableRequestForTesting {
+  // Allow tests only to modify the request, useful during retries.
+  return _request;
+}
+
+// Internal method for updating the request property such as on redirects.
+- (void)updateMutableRequest:(nullable NSMutableURLRequest *)request {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _request = request;
+  }  // @synchronized(self)
+}
+
+// Set a header field value on the request. Header field value changes will not
+// affect a fetch after the fetch has begun.
+- (void)setRequestValue:(nullable NSString *)value forHTTPHeaderField:(NSString *)field {
+  if (![self isFetching]) {
+    [self updateRequestValue:value forHTTPHeaderField:field];
+  } else {
+    GTMSESSION_ASSERT_DEBUG(0, @"request may not be set after beginFetch has been invoked");
+  }
+}
+
+// Internal method for updating request headers.
+- (void)updateRequestValue:(nullable NSString *)value forHTTPHeaderField:(NSString *)field {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [_request setValue:value forHTTPHeaderField:field];
+  }  // @synchronized(self)
+}
+
+- (void)setResponse:(nullable NSURLResponse *)response {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _response = response;
+  }  // @synchronized(self)
+}
+
+- (int64_t)bodyLength {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_bodyLength == NSURLSessionTransferSizeUnknown) {
+      if (_bodyData) {
+        _bodyLength = (int64_t)_bodyData.length;
+      } else if (_bodyFileURL) {
+        NSNumber *fileSizeNum = nil;
+        NSError *fileSizeError = nil;
+        if ([_bodyFileURL getResourceValue:&fileSizeNum
+                                    forKey:NSURLFileSizeKey
+                                     error:&fileSizeError]) {
+          _bodyLength = [fileSizeNum longLongValue];
+        }
+      }
+    }
+    return _bodyLength;
+  }  // @synchronized(self)
+}
+
+- (BOOL)useUploadTask {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _useUploadTask;
+  }  // @synchronized(self)
+}
+
+- (void)setUseUploadTask:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (flag != _useUploadTask) {
+      GTMSESSION_ASSERT_DEBUG(![self isFetchingUnsynchronized],
+                              @"useUploadTask should not change after beginFetch has been invoked");
+      _useUploadTask = flag;
+    }
+  }  // @synchronized(self)
+}
+
+- (nullable NSURL *)bodyFileURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _bodyFileURL;
+  }  // @synchronized(self)
+}
+
+- (void)setBodyFileURL:(nullable NSURL *)fileURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // The comparison here is a trivial optimization and forgiveness for any client that
+    // repeatedly sets the property, so it just uses pointer comparison rather than isEqual:.
+    if (fileURL != _bodyFileURL) {
+      GTMSESSION_ASSERT_DEBUG(![self isFetchingUnsynchronized],
+                              @"fileURL should not change after beginFetch has been invoked");
+
+      _bodyFileURL = fileURL;
+    }
+  }  // @synchronized(self)
+}
+
+- (nullable GTMSessionFetcherBodyStreamProvider)bodyStreamProvider {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _bodyStreamProvider;
+  }  // @synchronized(self)
+}
+
+- (void)setBodyStreamProvider:(nullable GTMSessionFetcherBodyStreamProvider)block {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSESSION_ASSERT_DEBUG(![self isFetchingUnsynchronized],
+                            @"stream provider should not change after beginFetch has been invoked");
+
+    _bodyStreamProvider = [block copy];
+  }  // @synchronized(self)
+}
+
+- (nullable id<GTMFetcherAuthorizationProtocol>)authorizer {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _authorizer;
+  }  // @synchronized(self)
+}
+
+- (void)setAuthorizer:(nullable id<GTMFetcherAuthorizationProtocol>)authorizer {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (authorizer != _authorizer) {
+      if ([self isFetchingUnsynchronized]) {
+        GTMSESSION_ASSERT_DEBUG(0,
+                                @"authorizer should not change after beginFetch has been invoked");
+      } else {
+        _authorizer = authorizer;
+      }
+    }
+  }  // @synchronized(self)
+}
+
+- (nullable NSData *)downloadedData {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _downloadedData;
+  }  // @synchronized(self)
+}
+
+- (void)setDownloadedData:(nullable NSData *)data {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _downloadedData = [data mutableCopy];
+  }  // @synchronized(self)
+}
+
+- (int64_t)downloadedLength {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _downloadedLength;
+  }  // @synchronized(self)
+}
+
+- (void)setDownloadedLength:(int64_t)length {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _downloadedLength = length;
+  }  // @synchronized(self)
+}
+
+- (nonnull dispatch_queue_t)callbackQueue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _callbackQueue;
+  }  // @synchronized(self)
+}
+
+- (void)setCallbackQueue:(nullable dispatch_queue_t)queue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _callbackQueue = queue ?: dispatch_get_main_queue();
+  }  // @synchronized(self)
+}
+
+- (nullable NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _session;
+  }  // @synchronized(self)
+}
+
+- (NSInteger)servicePriority {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _servicePriority;
+  }  // @synchronized(self)
+}
+
+- (void)setServicePriority:(NSInteger)value {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (value != _servicePriority) {
+      GTMSESSION_ASSERT_DEBUG(
+          ![self isFetchingUnsynchronized],
+          @"servicePriority should not change after beginFetch has been invoked");
+
+      _servicePriority = value;
+    }
+  }  // @synchronized(self)
+}
+
+- (void)setSession:(nullable NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _session = session;
+  }  // @synchronized(self)
+}
+
+- (BOOL)canShareSession {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _canShareSession;
+  }  // @synchronized(self)
+}
+
+- (void)setCanShareSession:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _canShareSession = flag;
+  }  // @synchronized(self)
+}
+
+- (BOOL)useBackgroundSession {
+  // This reflects if the user requested a background session, not necessarily
+  // if one was created. That is tracked with _usingBackgroundSession.
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _userRequestedBackgroundSession;
+  }  // @synchronized(self)
+}
+
+- (void)setUseBackgroundSession:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (flag != _userRequestedBackgroundSession) {
+      GTMSESSION_ASSERT_DEBUG(
+          ![self isFetchingUnsynchronized],
+          @"useBackgroundSession should not change after beginFetch has been invoked");
+
+      _userRequestedBackgroundSession = flag;
+    }
+  }  // @synchronized(self)
+}
+
+- (BOOL)isUsingBackgroundSession {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _usingBackgroundSession;
+  }  // @synchronized(self)
+}
+
+- (void)setUsingBackgroundSession:(BOOL)flag {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _usingBackgroundSession = flag;
+  }  // @synchronized(self)
+}
+
+- (nullable NSURLSession *)sessionNeedingInvalidation {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _sessionNeedingInvalidation;
+  }  // @synchronized(self)
+}
+
+- (void)setSessionNeedingInvalidation:(nullable NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _sessionNeedingInvalidation = session;
+  }  // @synchronized(self)
+}
+
+- (nonnull NSOperationQueue *)sessionDelegateQueue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _delegateQueue;
+  }  // @synchronized(self)
+}
+
+- (void)setSessionDelegateQueue:(nullable NSOperationQueue *)queue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (queue != _delegateQueue) {
+      if ([self isFetchingUnsynchronized]) {
+        GTMSESSION_ASSERT_DEBUG(0, @"sessionDelegateQueue should not change after fetch begins");
+      } else {
+        _delegateQueue = queue ?: [NSOperationQueue mainQueue];
+      }
+    }
+  }  // @synchronized(self)
+}
+
+- (BOOL)userStoppedFetching {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _userStoppedFetching;
+  }  // @synchronized(self)
+}
+
+- (nullable id)userData {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _userData;
+  }  // @synchronized(self)
+}
+
+- (void)setUserData:(nullable id)theObj {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _userData = theObj;
+  }  // @synchronized(self)
+}
+
+- (nullable NSURL *)destinationFileURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _destinationFileURL;
+  }  // @synchronized(self)
+}
+
+- (void)setDestinationFileURL:(nullable NSURL *)destinationFileURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (((_destinationFileURL == nil) && (destinationFileURL == nil)) ||
+        [_destinationFileURL isEqual:destinationFileURL]) {
+      return;
+    }
+    if (_sessionIdentifier) {
+      // This is something we don't expect to happen in production.
+      // However if it ever happen, leave a system log.
+      NSLog(@"%@: Destination File URL changed from (%@) to (%@) after session identifier has "
+            @"been created.",
+            [self class], _destinationFileURL, destinationFileURL);
+#if DEBUG
+      // On both the simulator and devices, the path can change to the download file, but the name
+      // shouldn't change. Technically, this isn't supported in the fetcher, but the change of
+      // URL is expected to happen only across development runs through Xcode.
+      NSString *oldFilename = [_destinationFileURL lastPathComponent];
+      NSString *newFilename = [destinationFileURL lastPathComponent];
+#pragma unused(oldFilename)
+#pragma unused(newFilename)
+      GTMSESSION_ASSERT_DEBUG(
+          [oldFilename isEqualToString:newFilename],
+          @"Destination File URL cannot be changed after session identifier has been created");
+#endif
+    }
+    _destinationFileURL = destinationFileURL;
+  }  // @synchronized(self)
+}
+
+- (void)setProperties:(nullable NSDictionary *)dict {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _properties = [dict mutableCopy];
+  }  // @synchronized(self)
+}
+
+- (nullable NSDictionary *)properties {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _properties;
+  }  // @synchronized(self)
+}
+
+- (void)setProperty:(nullable id)obj forKey:(NSString *)key {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_properties == nil && obj != nil) {
+      _properties = [[NSMutableDictionary alloc] init];
+    }
+    [_properties setValue:obj forKey:key];
+  }  // @synchronized(self)
+}
+
+- (nullable id)propertyForKey:(NSString *)key {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_properties objectForKey:key];
+  }  // @synchronized(self)
+}
+
+- (void)addPropertiesFromDictionary:(NSDictionary *)dict {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_properties == nil && dict != nil) {
+      [self setProperties:[dict mutableCopy]];
+    } else {
+      [_properties addEntriesFromDictionary:dict];
+    }
+  }  // @synchronized(self)
+}
+
+- (void)setCommentWithFormat:(id)format, ... {
+#if !STRIP_GTM_FETCH_LOGGING
+  NSString *result = format;
+  if (format) {
+    va_list argList;
+    va_start(argList, format);
+
+    result = [[NSString alloc] initWithFormat:format arguments:argList];
+    va_end(argList);
+  }
+  [self setComment:result];
+#endif
+}
+
+#if !STRIP_GTM_FETCH_LOGGING
+- (NSData *)loggedStreamData {
+  return _loggedStreamData;
+}
+
+- (void)appendLoggedStreamData:dataToAdd {
+  if (!_loggedStreamData) {
+    _loggedStreamData = [NSMutableData data];
+  }
+  [_loggedStreamData appendData:dataToAdd];
+}
+
+- (void)clearLoggedStreamData {
+  _loggedStreamData = nil;
+}
+
+- (void)setDeferResponseBodyLogging:(BOOL)deferResponseBodyLogging {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (deferResponseBodyLogging != _deferResponseBodyLogging) {
+      _deferResponseBodyLogging = deferResponseBodyLogging;
+      if (!deferResponseBodyLogging && !self.hasLoggedError) {
+        [_delegateQueue addOperationWithBlock:^{
+          [self logNowWithError:nil];
+        }];
+      }
+    }
+  }  // @synchronized(self)
+}
+
+- (BOOL)deferResponseBodyLogging {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _deferResponseBodyLogging;
+  }  // @synchronized(self)
+}
+
+#else
++ (void)setLoggingEnabled:(BOOL)flag {
+}
+
++ (BOOL)isLoggingEnabled {
+  return NO;
+}
+#endif  // STRIP_GTM_FETCH_LOGGING
+
+@end
+
+@implementation GTMSessionFetcher (BackwardsCompatibilityOnly)
+
+- (void)setCookieStorageMethod:(NSInteger)method {
+  // For backwards compatibility with the old fetcher, we'll support the old constants.
+  //
+  // Clients using the GTMSessionFetcher class should set the cookie storage explicitly
+  // themselves.
+  NSHTTPCookieStorage *storage = nil;
+  switch (method) {
+    case 0:  // kGTMHTTPFetcherCookieStorageMethodStatic
+             // nil storage will use [[self class] staticCookieStorage] when the fetch begins.
+      break;
+    case 1:  // kGTMHTTPFetcherCookieStorageMethodFetchHistory
+             // Do nothing; use whatever was set by the fetcher service.
+      return;
+    case 2:  // kGTMHTTPFetcherCookieStorageMethodSystemDefault
+      storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
+      break;
+    case 3:  // kGTMHTTPFetcherCookieStorageMethodNone
+             // Create temporary storage for this fetcher only.
+      storage = [[GTMSessionCookieStorage alloc] init];
+      break;
+    default:
+      GTMSESSION_ASSERT_DEBUG(0, @"Invalid cookie storage method: %d", (int)method);
+  }
+  self.cookieStorage = storage;
+}
+
+@end
+
+@implementation GTMSessionCookieStorage {
+  NSMutableArray *_cookies;
+  NSHTTPCookieAcceptPolicy _policy;
+}
+
+- (id)init {
+  self = [super init];
+  if (self != nil) {
+    _cookies = [[NSMutableArray alloc] init];
+  }
+  return self;
+}
+
+- (nullable NSArray *)cookies {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_cookies copy];
+  }  // @synchronized(self)
+}
+
+- (void)setCookie:(NSHTTPCookie *)cookie {
+  if (!cookie) return;
+  if (_policy == NSHTTPCookieAcceptPolicyNever) return;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [self internalSetCookie:cookie];
+  }  // @synchronized(self)
+}
+
+// Note: this should only be called from inside a @synchronized(self) block.
+- (void)internalSetCookie:(NSHTTPCookie *)newCookie {
+  GTMSessionCheckSynchronized(self);
+
+  if (_policy == NSHTTPCookieAcceptPolicyNever) return;
+
+  BOOL isValidCookie =
+      (newCookie.name.length > 0 && newCookie.domain.length > 0 && newCookie.path.length > 0);
+  GTMSESSION_ASSERT_DEBUG(isValidCookie, @"invalid cookie: %@", newCookie);
+
+  if (isValidCookie) {
+    // Remove the cookie if it's currently in the array.
+    NSHTTPCookie *oldCookie = [self cookieMatchingCookie:newCookie];
+    if (oldCookie) {
+      [_cookies removeObjectIdenticalTo:oldCookie];
+    }
+
+    if (![[self class] hasCookieExpired:newCookie]) {
+      [_cookies addObject:newCookie];
+    }
+  }
+}
+
+// Add all cookies in the new cookie array to the storage,
+// replacing stored cookies as appropriate.
+//
+// Side effect: removes expired cookies from the storage array.
+- (void)setCookies:(nullable NSArray *)newCookies {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [self removeExpiredCookies];
+
+    for (NSHTTPCookie *newCookie in newCookies) {
+      [self internalSetCookie:newCookie];
+    }
+  }  // @synchronized(self)
+}
+
+- (void)setCookies:(NSArray *)cookies
+             forURL:(nullable NSURL *)URL
+    mainDocumentURL:(nullable NSURL *)mainDocumentURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_policy == NSHTTPCookieAcceptPolicyNever) {
+      return;
+    }
+
+    if (_policy == NSHTTPCookieAcceptPolicyOnlyFromMainDocumentDomain) {
+      NSString *mainHost = mainDocumentURL.host;
+      NSString *associatedHost = URL.host;
+      if (!mainHost || ![associatedHost hasSuffix:mainHost]) {
+        return;
+      }
+    }
+  }  // @synchronized(self)
+  [self setCookies:cookies];
+}
+
+- (void)deleteCookie:(NSHTTPCookie *)cookie {
+  if (!cookie) return;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSHTTPCookie *foundCookie = [self cookieMatchingCookie:cookie];
+    if (foundCookie) {
+      [_cookies removeObjectIdenticalTo:foundCookie];
+    }
+  }  // @synchronized(self)
+}
+
+// Retrieve all cookies appropriate for the given URL, considering
+// domain, path, cookie name, expiration, security setting.
+// Side effect: removed expired cookies from the storage array.
+- (nullable NSArray *)cookiesForURL:(NSURL *)theURL {
+  NSMutableArray *foundCookies = nil;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [self removeExpiredCookies];
+
+    // We'll prepend "." to the desired domain, since we want the
+    // actual domain "nytimes.com" to still match the cookie domain
+    // ".nytimes.com" when we check it below with hasSuffix.
+    NSString *host = theURL.host.lowercaseString;
+    NSString *path = theURL.path;
+    NSString *scheme = [theURL scheme];
+
+    NSString *requestingDomain = nil;
+    BOOL isLocalhostRetrieval = NO;
+
+    if (IsLocalhost(host)) {
+      isLocalhostRetrieval = YES;
+    } else {
+      if (host.length > 0) {
+        requestingDomain = [@"." stringByAppendingString:host];
+      }
+    }
+
+    for (NSHTTPCookie *storedCookie in _cookies) {
+      NSString *cookieDomain = storedCookie.domain.lowercaseString;
+      NSString *cookiePath = storedCookie.path;
+      BOOL cookieIsSecure = [storedCookie isSecure];
+
+      BOOL isDomainOK;
+
+      if (isLocalhostRetrieval) {
+        // Prior to 10.5.6, the domain stored into NSHTTPCookies for localhost
+        // is "localhost.local"
+        isDomainOK = (IsLocalhost(cookieDomain) || [cookieDomain isEqual:@"localhost.local"]);
+      } else {
+        // Ensure we're matching exact domain names. We prepended a dot to the
+        // requesting domain, so we can also prepend one here if needed before
+        // checking if the request contains the cookie domain.
+        if (![cookieDomain hasPrefix:@"."]) {
+          cookieDomain = [@"." stringByAppendingString:cookieDomain];
+        }
+        isDomainOK = [requestingDomain hasSuffix:cookieDomain];
+      }
+
+      BOOL isPathOK = [cookiePath isEqual:@"/"] || [path hasPrefix:cookiePath];
+      BOOL isSecureOK =
+          (!cookieIsSecure || [scheme caseInsensitiveCompare:@"https"] == NSOrderedSame);
+
+      if (isDomainOK && isPathOK && isSecureOK) {
+        if (foundCookies == nil) {
+          foundCookies = [NSMutableArray array];
+        }
+        [foundCookies addObject:storedCookie];
+      }
+    }
+  }  // @synchronized(self)
+  return foundCookies;
+}
+
+// Override methods from the NSHTTPCookieStorage (NSURLSessionTaskAdditions) category.
+- (void)storeCookies:(NSArray *)cookies forTask:(NSURLSessionTask *)task {
+  NSURLRequest *currentRequest = task.currentRequest;
+  [self setCookies:cookies forURL:currentRequest.URL mainDocumentURL:nil];
+}
+
+- (void)getCookiesForTask:(NSURLSessionTask *)task
+        completionHandler:(void (^)(NSArray<NSHTTPCookie *> *))completionHandler {
+  if (completionHandler) {
+    NSURLRequest *currentRequest = task.currentRequest;
+    NSURL *currentRequestURL = currentRequest.URL;
+    NSArray *cookies = [self cookiesForURL:currentRequestURL];
+    completionHandler(cookies);
+  }
+}
+
+// Return a cookie from the array with the same name, domain, and path as the
+// given cookie, or else return nil if none found.
+//
+// Both the cookie being tested and all cookies in the storage array should
+// be valid (non-nil name, domains, paths).
+//
+// Note: this should only be called from inside a @synchronized(self) block
+- (nullable NSHTTPCookie *)cookieMatchingCookie:(NSHTTPCookie *)cookie {
+  GTMSessionCheckSynchronized(self);
+
+  NSString *name = cookie.name;
+  NSString *domain = cookie.domain;
+  NSString *path = cookie.path;
+
+  GTMSESSION_ASSERT_DEBUG(name && domain && path,
+                          @"Invalid stored cookie (name:%@ domain:%@ path:%@)", name, domain, path);
+
+  for (NSHTTPCookie *storedCookie in _cookies) {
+    if ([storedCookie.name isEqual:name] && [storedCookie.domain isEqual:domain] &&
+        [storedCookie.path isEqual:path]) {
+      return storedCookie;
+    }
+  }
+  return nil;
+}
+
+// Internal routine to remove any expired cookies from the array, excluding
+// cookies with nil expirations.
+//
+// Note: this should only be called from inside a @synchronized(self) block
+- (void)removeExpiredCookies {
+  GTMSessionCheckSynchronized(self);
+
+  // Count backwards since we're deleting items from the array
+  for (NSInteger idx = (NSInteger)_cookies.count - 1; idx >= 0; idx--) {
+    NSHTTPCookie *storedCookie = [_cookies objectAtIndex:(NSUInteger)idx];
+    if ([[self class] hasCookieExpired:storedCookie]) {
+      [_cookies removeObjectAtIndex:(NSUInteger)idx];
+    }
+  }
+}
+
++ (BOOL)hasCookieExpired:(NSHTTPCookie *)cookie {
+  NSDate *expiresDate = [cookie expiresDate];
+  if (expiresDate == nil) {
+    // Cookies seem to have a Expires property even when the expiresDate method returns nil.
+    id expiresVal = [[cookie properties] objectForKey:NSHTTPCookieExpires];
+    if ([expiresVal isKindOfClass:[NSDate class]]) {
+      expiresDate = expiresVal;
+    }
+  }
+  BOOL hasExpired = (expiresDate != nil && [expiresDate timeIntervalSinceNow] < 0);
+  return hasExpired;
+}
+
+- (void)removeAllCookies {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [_cookies removeAllObjects];
+  }  // @synchronized(self)
+}
+
+- (NSHTTPCookieAcceptPolicy)cookieAcceptPolicy {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _policy;
+  }  // @synchronized(self)
+}
+
+- (void)setCookieAcceptPolicy:(NSHTTPCookieAcceptPolicy)cookieAcceptPolicy {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _policy = cookieAcceptPolicy;
+  }  // @synchronized(self)
+}
+
+@end
+
+void GTMSessionFetcherAssertValidSelector(id _Nullable obj, SEL _Nullable sel, ...) {
+  // Verify that the object's selector is implemented with the proper
+  // number and type of arguments
+#if DEBUG
+  va_list argList;
+  va_start(argList, sel);
+
+  if (obj && sel) {
+    // Check that the selector is implemented
+    if (![obj respondsToSelector:sel]) {
+      NSLog(@"\"%@\" selector \"%@\" is unimplemented or misnamed",
+            NSStringFromClass([(id)obj class]), NSStringFromSelector((SEL)sel));
+      NSCAssert(0, @"callback selector unimplemented or misnamed");
+    } else {
+      const char *expectedArgType;
+      unsigned int argCount = 2;  // skip self and _cmd
+      NSMethodSignature *sig = [obj methodSignatureForSelector:sel];
+
+      // Check that each expected argument is present and of the correct type
+      while ((expectedArgType = va_arg(argList, const char *)) != 0) {
+        if ([sig numberOfArguments] > argCount) {
+          const char *foundArgType = [sig getArgumentTypeAtIndex:argCount];
+
+          if (0 != strncmp(foundArgType, expectedArgType, strlen(expectedArgType))) {
+            NSLog(@"\"%@\" selector \"%@\" argument %d should be type %s",
+                  NSStringFromClass([(id)obj class]), NSStringFromSelector((SEL)sel),
+                  (argCount - 2), expectedArgType);
+            NSCAssert(0, @"callback selector argument type mistake");
+          }
+        }
+        argCount++;
+      }
+
+      // Check that the proper number of arguments are present in the selector
+      if (argCount != [sig numberOfArguments]) {
+        NSLog(@"\"%@\" selector \"%@\" should have %d arguments",
+              NSStringFromClass([(id)obj class]), NSStringFromSelector((SEL)sel), (argCount - 2));
+        NSCAssert(0, @"callback selector arguments incorrect");
+      }
+    }
+  }
+
+  va_end(argList);
+#endif
+}
+
+NSString *GTMFetcherCleanedUserAgentString(NSString *str) {
+  // Reference http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html
+  // and http://www-archive.mozilla.org/build/user-agent-strings.html
+
+  if (str == nil) return @"";
+
+  NSMutableString *result = [NSMutableString stringWithString:str];
+
+  // Replace spaces and commas with underscores
+  [result replaceOccurrencesOfString:@" "
+                          withString:@"_"
+                             options:0
+                               range:NSMakeRange(0, result.length)];
+  [result replaceOccurrencesOfString:@","
+                          withString:@"_"
+                             options:0
+                               range:NSMakeRange(0, result.length)];
+
+  // Delete http token separators and remaining whitespace
+  static NSCharacterSet *charsToDelete = nil;
+  if (charsToDelete == nil) {
+    // Make a set of unwanted characters
+    NSString *const kSeparators = @"()<>@;:\\\"/[]?={}";
+
+    NSMutableCharacterSet *mutableChars =
+        [[NSCharacterSet whitespaceAndNewlineCharacterSet] mutableCopy];
+    [mutableChars addCharactersInString:kSeparators];
+    charsToDelete = [mutableChars copy];  // hang on to an immutable copy
+  }
+
+  while (1) {
+    NSRange separatorRange = [result rangeOfCharacterFromSet:charsToDelete];
+    if (separatorRange.location == NSNotFound) break;
+
+    [result deleteCharactersInRange:separatorRange];
+  };
+
+  return result;
+}
+
+NSString *GTMFetcherSystemVersionString(void) {
+  static NSString *sSavedSystemString;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+#if TARGET_OS_WATCH
+    // watchOS - WKInterfaceDevice
+
+    WKInterfaceDevice *currentDevice = [WKInterfaceDevice currentDevice];
+
+    NSString *rawModel = [currentDevice model];
+    NSString *model = GTMFetcherCleanedUserAgentString(rawModel);
+
+    NSString *systemVersion = [currentDevice systemVersion];
+
+#if TARGET_OS_SIMULATOR
+    NSString *hardwareModel = @"sim";
+#else
+    NSString *hardwareModel;
+    struct utsname unameRecord;
+    if (uname(&unameRecord) == 0) {
+      NSString *machineName = @(unameRecord.machine);
+      hardwareModel = GTMFetcherCleanedUserAgentString(machineName);
+    }
+    if (hardwareModel.length == 0) {
+      hardwareModel = @"unk";
+    }
+#endif
+
+    sSavedSystemString =
+        [[NSString alloc] initWithFormat:@"%@/%@ hw/%@", model, systemVersion, hardwareModel];
+    // Example:  Apple_Watch/3.0 hw/Watch1_2
+#elif TARGET_OS_TV || TARGET_OS_IOS
+    // iOS and tvOS have UIDevice, use that.
+    UIDevice *currentDevice = [UIDevice currentDevice];
+
+    NSString *rawModel = [currentDevice model];
+    NSString *model = GTMFetcherCleanedUserAgentString(rawModel);
+
+    NSString *systemVersion = [currentDevice systemVersion];
+
+#if TARGET_OS_SIMULATOR
+    NSString *hardwareModel = @"sim";
+#else
+    NSString *hardwareModel;
+    struct utsname unameRecord;
+    if (uname(&unameRecord) == 0) {
+      NSString *machineName = @(unameRecord.machine);
+      hardwareModel = GTMFetcherCleanedUserAgentString(machineName);
+    }
+    if (hardwareModel.length == 0) {
+      hardwareModel = @"unk";
+    }
+#endif
+
+    sSavedSystemString = [[NSString alloc] initWithFormat:@"%@/%@ hw/%@",
+                          model, systemVersion, hardwareModel];
+    // Example:  iPod_Touch/2.2 hw/iPod1_1
+    // Example:  Apple_TV/9.2 hw/AppleTV5,3
+#elif TARGET_OS_OSX
+    // Mac build
+    NSProcessInfo *procInfo = [NSProcessInfo processInfo];
+    NSString *versString;
+    NSOperatingSystemVersion version = procInfo.operatingSystemVersion;
+    versString = [NSString stringWithFormat:@"%ld.%ld.%ld", (long)version.majorVersion,
+                                            (long)version.minorVersion, (long)version.patchVersion];
+
+    sSavedSystemString = [[NSString alloc] initWithFormat:@"MacOSX/%@", versString];
+#elif defined(_SYS_UTSNAME_H)
+    // Foundation-only build
+    struct utsname unameRecord;
+    uname(&unameRecord);
+
+    sSavedSystemString = [NSString stringWithFormat:@"%s/%s",
+                          unameRecord.sysname, unameRecord.release]; // "Darwin/8.11.1"
+#else
+#error No branch taken for a default user agent
+#endif
+  });
+  return sSavedSystemString;
+}
+
+NSString *GTMFetcherStandardUserAgentString(NSBundle *_Nullable bundle) {
+  NSString *result = [NSString stringWithFormat:@"%@ %@", GTMFetcherApplicationIdentifier(bundle),
+                                                GTMFetcherSystemVersionString()];
+  return result;
+}
+
+NSString *GTMFetcherApplicationIdentifier(NSBundle *_Nullable bundle) {
+  @synchronized([GTMSessionFetcher class]) {
+    static NSMutableDictionary *sAppIDMap = nil;
+
+    // If there's a bundle ID, use that; otherwise, use the process name
+    if (bundle == nil) {
+      bundle = [NSBundle mainBundle];
+    }
+    NSString *bundleID = [bundle bundleIdentifier];
+    if (bundleID == nil) {
+      bundleID = @"";
+    }
+
+    NSString *identifier = [sAppIDMap objectForKey:bundleID];
+    if (identifier) return identifier;
+
+    // Apps may add a string to the info.plist to uniquely identify different builds.
+    identifier = [bundle objectForInfoDictionaryKey:@"GTMUserAgentID"];
+    if (identifier.length == 0) {
+      if (bundleID.length > 0) {
+        identifier = bundleID;
+      } else {
+        // Fall back on the procname, prefixed by "proc" to flag that it's
+        // autogenerated and perhaps unreliable
+        NSString *procName = [[NSProcessInfo processInfo] processName];
+        identifier = [NSString stringWithFormat:@"proc_%@", procName];
+      }
+    }
+
+    // Clean up whitespace and special characters
+    identifier = GTMFetcherCleanedUserAgentString(identifier);
+
+    // If there's a version number, append that
+    NSString *version = [bundle objectForInfoDictionaryKey:@"GTMUserAgentVersion"];
+    if (version.length == 0) {
+      version = [bundle objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
+      if (version.length == 0) {
+        version = [bundle objectForInfoDictionaryKey:@"CFBundleVersion"];
+      }
+    }
+
+    // Clean up whitespace and special characters
+    version = GTMFetcherCleanedUserAgentString(version);
+
+    // Glue the two together (cleanup done above or else cleanup would strip the
+    // slash)
+    if (version.length > 0) {
+      identifier = [identifier stringByAppendingFormat:@"/%@", version];
+    }
+
+    if (sAppIDMap == nil) {
+      sAppIDMap = [[NSMutableDictionary alloc] init];
+    }
+    [sAppIDMap setObject:identifier forKey:bundleID];
+    return identifier;
+  }
+}
+
+#if DEBUG && (!defined(NS_BLOCK_ASSERTIONS) || GTMSESSION_ASSERT_AS_LOG)
+@implementation GTMSessionSyncMonitorInternal {
+  NSValue *_objectKey;        // The synchronize target object.
+  const char *_functionName;  // The function containing the monitored sync block.
+}
+
+- (instancetype)initWithSynchronizationObject:(id)object
+                               allowRecursive:(BOOL)allowRecursive
+                                 functionName:(const char *)functionName {
+  self = [super init];
+  if (self) {
+    Class threadKey = [GTMSessionSyncMonitorInternal class];
+    _objectKey = [NSValue valueWithNonretainedObject:object];
+    _functionName = functionName;
+
+    NSMutableDictionary *threadDict = [NSThread currentThread].threadDictionary;
+    NSMutableDictionary *counters = threadDict[threadKey];
+    if (counters == nil) {
+      counters = [NSMutableDictionary dictionary];
+      threadDict[(id)threadKey] = counters;
+    }
+    NSCountedSet *functionNamesCounter = counters[_objectKey];
+    NSUInteger numberOfSyncingFunctions = functionNamesCounter.count;
+
+    if (!allowRecursive) {
+      BOOL isTopLevelSyncScope = (numberOfSyncingFunctions == 0);
+      NSArray *stack = [NSThread callStackSymbols];
+      GTMSESSION_ASSERT_DEBUG(isTopLevelSyncScope,
+                              @"*** Recursive sync on %@ at %s; previous sync at %@\n%@",
+                              [object class], functionName, functionNamesCounter.allObjects,
+                              [stack subarrayWithRange:NSMakeRange(1, stack.count - 1)]);
+    }
+
+    if (!functionNamesCounter) {
+      functionNamesCounter = [NSCountedSet set];
+      counters[_objectKey] = functionNamesCounter;
+    }
+    [functionNamesCounter addObject:(id _Nonnull) @(functionName)];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  Class threadKey = [GTMSessionSyncMonitorInternal class];
+
+  NSMutableDictionary *threadDict = [NSThread currentThread].threadDictionary;
+  NSMutableDictionary *counters = threadDict[threadKey];
+  NSCountedSet *functionNamesCounter = counters[_objectKey];
+  NSString *functionNameStr = @(_functionName);
+  NSUInteger numberOfSyncsByThisFunction = [functionNamesCounter countForObject:functionNameStr];
+  NSArray *stack = [NSThread callStackSymbols];
+  GTMSESSION_ASSERT_DEBUG(numberOfSyncsByThisFunction > 0, @"Sync not found on %@ at %s\n%@",
+                          [_objectKey.nonretainedObjectValue class], _functionName,
+                          [stack subarrayWithRange:NSMakeRange(1, stack.count - 1)]);
+  [functionNamesCounter removeObject:functionNameStr];
+  if (functionNamesCounter.count == 0) {
+    [counters removeObjectForKey:_objectKey];
+  }
+}
+
++ (nullable NSArray *)functionsHoldingSynchronizationOnObject:(id)object {
+  Class threadKey = [GTMSessionSyncMonitorInternal class];
+  NSValue *localObjectKey = [NSValue valueWithNonretainedObject:object];
+
+  NSMutableDictionary *threadDict = [NSThread currentThread].threadDictionary;
+  NSMutableDictionary *counters = threadDict[threadKey];
+  NSCountedSet *functionNamesCounter = counters[localObjectKey];
+  return functionNamesCounter.count > 0 ? functionNamesCounter.allObjects : nil;
+}
+@end
+#endif  // DEBUG && (!defined(NS_BLOCK_ASSERTIONS) || GTMSESSION_ASSERT_AS_LOG)
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.h b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.h
new file mode 100644
index 0000000..b3c1b43
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.h	
@@ -0,0 +1,111 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GTMSessionFetcher.h"
+
+// GTM HTTP Logging
+//
+// All traffic using GTMSessionFetcher can be easily logged.  Call
+//
+//   [GTMSessionFetcher setLoggingEnabled:YES];
+//
+// to begin generating log files.
+//
+// Unless explicitly set by the application using +setLoggingDirectory:,
+// logs are put into a default directory, located at:
+//   * macOS: ~/Desktop/GTMHTTPDebugLogs
+//   * iOS simulator: ~/GTMHTTPDebugLogs (in application sandbox)
+//   * iOS device: ~/Documents/GTMHTTPDebugLogs (in application sandbox)
+//
+// Tip: use the Finder's "Sort By Date" to find the most recent logs.
+//
+// Each run of an application gets a separate set of log files.  An html
+// file is generated to simplify browsing the run's http transactions.
+// The html file includes javascript links for inline viewing of uploaded
+// and downloaded data.
+//
+// A symlink is created in the logs folder to simplify finding the html file
+// for the latest run of the application; the symlink is called
+//
+//   AppName_http_log_newest.html
+//
+// For better viewing of XML logs, use Camino or Firefox rather than Safari.
+//
+// Each fetcher may be given a comment to be inserted as a label in the logs,
+// such as
+//   [fetcher setCommentWithFormat:@"retrieve item %@", itemName];
+//
+// Projects may define STRIP_GTM_FETCH_LOGGING to remove logging code.
+
+#if !STRIP_GTM_FETCH_LOGGING
+
+@interface GTMSessionFetcher (GTMSessionFetcherLogging)
+
+// Note: on macOS the default logs directory is ~/Desktop/GTMHTTPDebugLogs; on
+// iOS simulators it will be the ~/GTMHTTPDebugLogs (in the app sandbox); on
+// iOS devices it will be in ~/Documents/GTMHTTPDebugLogs (in the app sandbox).
+// These directories will be created as needed, and are excluded from backups
+// to iCloud and iTunes.
+//
+// If a custom directory is set, the directory should already exist. It is
+// the application's responsibility to exclude any custom directory from
+// backups, if desired.
++ (void)setLoggingDirectory:(NSString *)path;
++ (NSString *)loggingDirectory;
+
+// client apps can turn logging on and off
++ (void)setLoggingEnabled:(BOOL)isLoggingEnabled;
++ (BOOL)isLoggingEnabled;
+
+// client apps can turn off logging to a file if they want to only check
+// the fetcher's log property
++ (void)setLoggingToFileEnabled:(BOOL)isLoggingToFileEnabled;
++ (BOOL)isLoggingToFileEnabled;
+
+// client apps can optionally specify process name and date string used in
+// log file names
++ (void)setLoggingProcessName:(NSString *)processName;
++ (NSString *)loggingProcessName;
+
++ (void)setLoggingDateStamp:(NSString *)dateStamp;
++ (NSString *)loggingDateStamp;
+
+// client apps can specify the directory for the log for this specific run:
+//
+//   [GTMSessionFetcher setLogDirectoryForCurrentRun:logDirectoryPath];
+//
+// Setting this overrides the logging directory, process name, and date stamp when writing
+// the log file.
++ (void)setLogDirectoryForCurrentRun:(NSString *)logDirectoryForCurrentRun;
++ (NSString *)logDirectoryForCurrentRun;
+
+// Prunes old log directories that have not been modified since the provided date.
+// This will not delete the current run's log directory.
++ (void)deleteLogDirectoriesOlderThanDate:(NSDate *)date;
+
+// internal; called by fetcher
+- (void)logFetchWithError:(NSError *)error;
+- (NSInputStream *)loggedInputStreamForInputStream:(NSInputStream *)inputStream;
+- (GTMSessionFetcherBodyStreamProvider)loggedStreamProviderForStreamProvider:
+    (GTMSessionFetcherBodyStreamProvider)streamProvider;
+
+// internal; accessors useful for viewing logs
++ (NSString *)processNameLogPrefix;
++ (NSString *)symlinkNameSuffix;
++ (NSString *)htmlFileName;
+
+@end
+
+#endif  // !STRIP_GTM_FETCH_LOGGING
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.m b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.m
new file mode 100644
index 0000000..c728820
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherLogging.m	
@@ -0,0 +1,965 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#include <sys/stat.h>
+#include <unistd.h>
+
+#import "GTMSessionFetcherLogging.h"
+
+#ifndef STRIP_GTM_FETCH_LOGGING
+#error GTMSessionFetcher headers should have defaulted this if it wasn't already defined.
+#endif
+
+#if !STRIP_GTM_FETCH_LOGGING
+
+// Sensitive credential strings are replaced in logs with _snip_
+//
+// Apps that must see the contents of sensitive tokens can set this to 1
+#ifndef SKIP_GTM_FETCH_LOGGING_SNIPPING
+#define SKIP_GTM_FETCH_LOGGING_SNIPPING 0
+#endif
+
+// If GTMReadMonitorInputStream is available, it can be used for
+// capturing uploaded streams of data
+//
+// We locally declare methods of GTMReadMonitorInputStream so we
+// do not need to import the header, as some projects may not have it available
+#if !GTMSESSION_BUILD_COMBINED_SOURCES
+@interface GTMReadMonitorInputStream : NSInputStream
+
++ (instancetype)inputStreamWithStream:(NSInputStream *)input;
+
+@property(assign) id readDelegate;
+@property(assign) SEL readSelector;
+
+@end
+#else
+@class GTMReadMonitorInputStream;
+#endif  // !GTMSESSION_BUILD_COMBINED_SOURCES
+
+@interface GTMSessionFetcher (GTMSessionFetcherLoggingUtilities)
+
++ (NSString *)headersStringForDictionary:(NSDictionary *)dict;
++ (NSString *)snipSubstringOfString:(NSString *)originalStr
+                 betweenStartString:(NSString *)startStr
+                          endString:(NSString *)endStr;
+- (void)inputStream:(GTMReadMonitorInputStream *)stream
+     readIntoBuffer:(void *)buffer
+             length:(int64_t)length;
+
+@end
+
+@implementation GTMSessionFetcher (GTMSessionFetcherLogging)
+
+// fetchers come and fetchers go, but statics are forever
+static BOOL gIsLoggingEnabled = NO;
+static BOOL gIsLoggingToFile = YES;
+static NSString *gLoggingDirectoryPath = nil;
+static NSString *gLogDirectoryForCurrentRun = nil;
+static NSString *gLoggingDateStamp = nil;
+static NSString *gLoggingProcessName = nil;
+
++ (void)setLoggingDirectory:(NSString *)path {
+  gLoggingDirectoryPath = [path copy];
+}
+
++ (NSString *)loggingDirectory {
+  if (!gLoggingDirectoryPath) {
+    NSArray *paths = nil;
+#if TARGET_IPHONE_SIMULATOR
+    // default to a directory called GTMHTTPDebugLogs into a sandbox-safe
+    // directory that a developer can find easily, the application home
+    paths = @[ NSHomeDirectory() ];
+#elif TARGET_OS_IPHONE
+    // Neither ~/Desktop nor ~/Home is writable on an actual iOS, watchOS, or tvOS device.
+    // Put it in ~/Documents.
+    paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+#else
+    // default to a directory called GTMHTTPDebugLogs in the desktop folder
+    paths = NSSearchPathForDirectoriesInDomains(NSDesktopDirectory, NSUserDomainMask, YES);
+#endif
+
+    NSString *desktopPath = paths.firstObject;
+    if (desktopPath) {
+      NSString *const kGTMLogFolderName = @"GTMHTTPDebugLogs";
+      NSString *logsFolderPath = [desktopPath stringByAppendingPathComponent:kGTMLogFolderName];
+
+      NSFileManager *fileMgr = [NSFileManager defaultManager];
+      BOOL isDir;
+      BOOL doesFolderExist = [fileMgr fileExistsAtPath:logsFolderPath isDirectory:&isDir];
+      if (!doesFolderExist) {
+        // make the directory
+        doesFolderExist = [fileMgr createDirectoryAtPath:logsFolderPath
+                             withIntermediateDirectories:YES
+                                              attributes:nil
+                                                   error:NULL];
+        if (doesFolderExist) {
+          // The directory has been created. Exclude it from backups.
+          NSURL *pathURL = [NSURL fileURLWithPath:logsFolderPath isDirectory:YES];
+          [pathURL setResourceValue:@YES forKey:NSURLIsExcludedFromBackupKey error:NULL];
+        }
+      }
+
+      if (doesFolderExist) {
+        // it's there; store it in the global
+        gLoggingDirectoryPath = [logsFolderPath copy];
+      }
+    }
+  }
+  return gLoggingDirectoryPath;
+}
+
++ (void)setLogDirectoryForCurrentRun:(NSString *)logDirectoryForCurrentRun {
+  // Set the path for this run's logs.
+  gLogDirectoryForCurrentRun = [logDirectoryForCurrentRun copy];
+}
+
++ (NSString *)logDirectoryForCurrentRun {
+  // make a directory for this run's logs, like SyncProto_logs_10-16_01-56-58PM
+  if (gLogDirectoryForCurrentRun) return gLogDirectoryForCurrentRun;
+
+  NSString *parentDir = [self loggingDirectory];
+  NSString *logNamePrefix = [self processNameLogPrefix];
+  NSString *dateStamp = [self loggingDateStamp];
+  NSString *dirName = [NSString stringWithFormat:@"%@%@", logNamePrefix, dateStamp];
+  NSString *logDirectory = [parentDir stringByAppendingPathComponent:dirName];
+
+  if (gIsLoggingToFile) {
+    NSFileManager *fileMgr = [NSFileManager defaultManager];
+    // Be sure that the first time this app runs, it's not writing to a preexisting folder
+    static BOOL gShouldReuseFolder = NO;
+    if (!gShouldReuseFolder) {
+      gShouldReuseFolder = YES;
+      NSString *origLogDir = logDirectory;
+      for (int ctr = 2; ctr < 20; ++ctr) {
+        if (![fileMgr fileExistsAtPath:logDirectory]) break;
+
+        // append a digit
+        logDirectory = [origLogDir stringByAppendingFormat:@"_%d", ctr];
+      }
+    }
+    if (![fileMgr createDirectoryAtPath:logDirectory
+            withIntermediateDirectories:YES
+                             attributes:nil
+                                  error:NULL])
+      return nil;
+  }
+  gLogDirectoryForCurrentRun = logDirectory;
+
+  return gLogDirectoryForCurrentRun;
+}
+
++ (void)setLoggingEnabled:(BOOL)isLoggingEnabled {
+  gIsLoggingEnabled = isLoggingEnabled;
+}
+
++ (BOOL)isLoggingEnabled {
+  return gIsLoggingEnabled;
+}
+
++ (void)setLoggingToFileEnabled:(BOOL)isLoggingToFileEnabled {
+  gIsLoggingToFile = isLoggingToFileEnabled;
+}
+
++ (BOOL)isLoggingToFileEnabled {
+  return gIsLoggingToFile;
+}
+
++ (void)setLoggingProcessName:(NSString *)processName {
+  gLoggingProcessName = [processName copy];
+}
+
++ (NSString *)loggingProcessName {
+  // get the process name (once per run) replacing spaces with underscores
+  if (!gLoggingProcessName) {
+    NSString *procName = [[NSProcessInfo processInfo] processName];
+    gLoggingProcessName = [procName stringByReplacingOccurrencesOfString:@" " withString:@"_"];
+  }
+  return gLoggingProcessName;
+}
+
++ (void)setLoggingDateStamp:(NSString *)dateStamp {
+  gLoggingDateStamp = [dateStamp copy];
+}
+
++ (NSString *)loggingDateStamp {
+  // We'll pick one date stamp per run, so a run that starts at a later second
+  // will get a unique results html file
+  if (!gLoggingDateStamp) {
+    // produce a string like 08-21_01-41-23PM
+
+    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
+    [formatter setFormatterBehavior:NSDateFormatterBehavior10_4];
+    [formatter setDateFormat:@"M-dd_hh-mm-ssa"];
+
+    gLoggingDateStamp = [formatter stringFromDate:[NSDate date]];
+  }
+  return gLoggingDateStamp;
+}
+
++ (NSString *)processNameLogPrefix {
+  static NSString *gPrefix = nil;
+  if (!gPrefix) {
+    NSString *processName = [self loggingProcessName];
+    gPrefix = [[NSString alloc] initWithFormat:@"%@_log_", processName];
+  }
+  return gPrefix;
+}
+
++ (NSString *)symlinkNameSuffix {
+  return @"_log_newest.html";
+}
+
++ (NSString *)htmlFileName {
+  return @"aperçu_http_log.html";
+}
+
++ (void)deleteLogDirectoriesOlderThanDate:(NSDate *)cutoffDate {
+  NSFileManager *fileMgr = [NSFileManager defaultManager];
+  NSURL *parentDir = [NSURL fileURLWithPath:[[self class] loggingDirectory]];
+  NSURL *logDirectoryForCurrentRun =
+      [NSURL fileURLWithPath:[[self class] logDirectoryForCurrentRun]];
+  NSError *error;
+  NSArray *contents = [fileMgr contentsOfDirectoryAtURL:parentDir
+                             includingPropertiesForKeys:@[ NSURLContentModificationDateKey ]
+                                                options:0
+                                                  error:&error];
+  for (NSURL *itemURL in contents) {
+    if ([itemURL isEqual:logDirectoryForCurrentRun]) continue;
+
+    NSDate *modDate;
+    if ([itemURL getResourceValue:&modDate forKey:NSURLContentModificationDateKey error:&error]) {
+      if ([modDate compare:cutoffDate] == NSOrderedAscending) {
+        if (![fileMgr removeItemAtURL:itemURL error:&error]) {
+          NSLog(@"deleteLogDirectoriesOlderThanDate failed to delete %@: %@", itemURL.path, error);
+        }
+      }
+    } else {
+      NSLog(@"deleteLogDirectoriesOlderThanDate failed to get mod date of %@: %@", itemURL.path,
+            error);
+    }
+  }
+}
+
+// formattedStringFromData returns a prettyprinted string for XML or JSON input,
+// and a plain string for other input data
+- (NSString *)formattedStringFromData:(NSData *)inputData
+                          contentType:(NSString *)contentType
+                                 JSON:(NSDictionary **)outJSON {
+  if (!inputData) return nil;
+
+  // if the content type is JSON and we have the parsing class available, use that
+  if ([contentType hasPrefix:@"application/json"] && inputData.length > 5) {
+    // convert from JSON string to NSObjects and back to a formatted string
+    NSMutableDictionary *obj =
+        [NSJSONSerialization JSONObjectWithData:inputData
+                                        options:NSJSONReadingMutableContainers
+                                          error:NULL];
+    if (obj) {
+      if (outJSON) *outJSON = obj;
+      if ([obj isKindOfClass:[NSMutableDictionary class]]) {
+        // for security and privacy, omit OAuth 2 response access and refresh tokens
+        if ([obj valueForKey:@"refresh_token"] != nil) {
+          [obj setObject:@"_snip_" forKey:@"refresh_token"];
+        }
+        if ([obj valueForKey:@"access_token"] != nil) {
+          [obj setObject:@"_snip_" forKey:@"access_token"];
+        }
+      }
+      NSData *data = [NSJSONSerialization dataWithJSONObject:obj
+                                                     options:NSJSONWritingPrettyPrinted
+                                                       error:NULL];
+      if (data) {
+        NSString *jsonStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+        return jsonStr;
+      }
+    }
+  }
+
+#if !TARGET_OS_IPHONE && !GTM_SKIP_LOG_XMLFORMAT
+  // verify that this data starts with the bytes indicating XML
+
+  NSString *const kXMLLintPath = @"/usr/bin/xmllint";
+  static BOOL gHasCheckedAvailability = NO;
+  static BOOL gIsXMLLintAvailable = NO;
+
+  if (!gHasCheckedAvailability) {
+    gIsXMLLintAvailable = [[NSFileManager defaultManager] fileExistsAtPath:kXMLLintPath];
+    gHasCheckedAvailability = YES;
+  }
+  if (gIsXMLLintAvailable && inputData.length > 5 && strncmp(inputData.bytes, "<?xml", 5) == 0) {
+    // call xmllint to format the data
+    NSTask *task = [[NSTask alloc] init];
+    [task setLaunchPath:kXMLLintPath];
+
+    // use the dash argument to specify stdin as the source file
+    [task setArguments:@[ @"--format", @"-" ]];
+    [task setEnvironment:@{}];
+
+    NSPipe *inputPipe = [NSPipe pipe];
+    NSPipe *outputPipe = [NSPipe pipe];
+    [task setStandardInput:inputPipe];
+    [task setStandardOutput:outputPipe];
+
+    [task launch];
+
+    [[inputPipe fileHandleForWriting] writeData:inputData];
+    [[inputPipe fileHandleForWriting] closeFile];
+
+    // drain the stdout before waiting for the task to exit
+    NSData *formattedData = [[outputPipe fileHandleForReading] readDataToEndOfFile];
+
+    [task waitUntilExit];
+
+    int status = [task terminationStatus];
+    if (status == 0 && formattedData.length > 0) {
+      // success
+      inputData = formattedData;
+    }
+  }
+#else
+  // we can't call external tasks on the iPhone; leave the XML unformatted
+#endif
+
+  NSString *dataStr = [[NSString alloc] initWithData:inputData encoding:NSUTF8StringEncoding];
+  return dataStr;
+}
+
+// stringFromStreamData creates a string given the supplied data
+//
+// If NSString can create a UTF-8 string from the data, then that is returned.
+//
+// Otherwise, this routine tries to find a MIME boundary at the beginning of the data block, and
+// uses that to break up the data into parts. Each part will be used to try to make a UTF-8 string.
+// For parts that fail, a replacement string showing the part header and <<n bytes>> is supplied
+// in place of the binary data.
+
+- (NSString *)stringFromStreamData:(NSData *)data contentType:(NSString *)contentType {
+  if (!data) return nil;
+
+  // optimistically, see if the whole data block is UTF-8
+  NSString *streamDataStr = [self formattedStringFromData:data contentType:contentType JSON:NULL];
+  if (streamDataStr) return streamDataStr;
+
+  // Munge a buffer by replacing non-ASCII bytes with underscores, and turn that munged buffer an
+  // NSString.  That gives us a string we can use with NSScanner.
+  NSMutableData *mutableData = [NSMutableData dataWithData:data];
+  unsigned char *bytes = (unsigned char *)mutableData.mutableBytes;
+
+  for (unsigned int idx = 0; idx < mutableData.length; ++idx) {
+    if (bytes[idx] > 0x7F || bytes[idx] == 0) {
+      bytes[idx] = '_';
+    }
+  }
+
+  NSString *mungedStr = [[NSString alloc] initWithData:mutableData encoding:NSUTF8StringEncoding];
+  if (mungedStr) {
+    // scan for the boundary string
+    NSString *boundary = nil;
+    NSScanner *scanner = [NSScanner scannerWithString:mungedStr];
+
+    if ([scanner scanUpToString:@"\r\n" intoString:&boundary] && [boundary hasPrefix:@"--"]) {
+      // we found a boundary string; use it to divide the string into parts
+      NSArray *mungedParts = [mungedStr componentsSeparatedByString:boundary];
+
+      // look at each munged part in the original string, and try to convert those into UTF-8
+      NSMutableArray *origParts = [NSMutableArray array];
+      NSUInteger offset = 0;
+      for (NSString *mungedPart in mungedParts) {
+        NSUInteger partSize = mungedPart.length;
+        NSData *origPartData = [data subdataWithRange:NSMakeRange(offset, partSize)];
+        NSString *origPartStr = [[NSString alloc] initWithData:origPartData
+                                                      encoding:NSUTF8StringEncoding];
+        if (origPartStr) {
+          // we could make this original part into UTF-8; use the string
+          [origParts addObject:origPartStr];
+        } else {
+          // this part can't be made into UTF-8; scan the header, if we can
+          NSString *header = nil;
+          NSScanner *headerScanner = [NSScanner scannerWithString:mungedPart];
+          if (![headerScanner scanUpToString:@"\r\n\r\n" intoString:&header]) {
+            // we couldn't find a header
+            header = @"";
+          }
+          // make a part string with the header and <<n bytes>>
+          NSString *binStr = [NSString
+              stringWithFormat:@"\r%@\r<<%lu bytes>>\r", header, (long)(partSize - header.length)];
+          [origParts addObject:binStr];
+        }
+        offset += partSize + boundary.length;
+      }
+      // rejoin the original parts
+      streamDataStr = [origParts componentsJoinedByString:boundary];
+    }
+  }
+  if (!streamDataStr) {
+    // give up; just make a string showing the uploaded bytes
+    streamDataStr = [NSString stringWithFormat:@"<<%u bytes>>", (unsigned int)data.length];
+  }
+  return streamDataStr;
+}
+
+// logFetchWithError is called following a successful or failed fetch attempt
+//
+// This method does all the work for appending to and creating log files
+
+- (void)logFetchWithError:(NSError *)error {
+  if (![[self class] isLoggingEnabled]) return;
+  NSString *logDirectory = [[self class] logDirectoryForCurrentRun];
+  if (!logDirectory) return;
+  NSString *processName = [[self class] loggingProcessName];
+
+  // TODO: add Javascript to display response data formatted in hex
+
+  // each response's NSData goes into its own xml or txt file, though all responses for this run of
+  // the app share a main html file. This counter tracks all fetch responses for this app run.
+  //
+  // we'll use a local variable since this routine may be reentered while waiting for XML formatting
+  // to be completed by an external task
+  static int gResponseCounter = 0;
+  int responseCounter = ++gResponseCounter;
+
+  NSURLResponse *response = [self response];
+  NSDictionary *responseHeaders = [self responseHeaders];
+  NSString *responseDataStr = nil;
+  NSDictionary *responseJSON = nil;
+
+  // if there's response data, decide what kind of file to put it in based on the first bytes of the
+  // file or on the mime type supplied by the server
+  NSString *responseMIMEType = [response MIMEType];
+  BOOL isResponseImage = NO;
+
+  // file name for an image data file
+  NSString *responseDataFileName = nil;
+
+  int64_t responseDataLength = self.downloadedLength;
+  if (responseDataLength > 0) {
+    NSData *downloadedData = self.downloadedData;
+    if (downloadedData == nil && responseDataLength > 0 && responseDataLength < 20000 &&
+        self.destinationFileURL) {
+      // There's a download file that's not too big, so get the data to display from the downloaded
+      // file.
+      NSURL *destinationURL = self.destinationFileURL;
+      downloadedData = [NSData dataWithContentsOfURL:destinationURL];
+    }
+    NSString *responseType = [responseHeaders valueForKey:@"Content-Type"];
+    responseDataStr = [self formattedStringFromData:downloadedData
+                                        contentType:responseType
+                                               JSON:&responseJSON];
+    NSString *responseDataExtn = nil;
+    NSData *dataToWrite = nil;
+    if (responseDataStr) {
+      // we were able to make a UTF-8 string from the response data
+      if ([responseMIMEType isEqual:@"application/atom+xml"] ||
+          [responseMIMEType hasSuffix:@"/xml"]) {
+        responseDataExtn = @"xml";
+        dataToWrite = [responseDataStr dataUsingEncoding:NSUTF8StringEncoding];
+      }
+    } else if ([responseMIMEType isEqual:@"image/jpeg"]) {
+      responseDataExtn = @"jpg";
+      dataToWrite = downloadedData;
+      isResponseImage = YES;
+    } else if ([responseMIMEType isEqual:@"image/gif"]) {
+      responseDataExtn = @"gif";
+      dataToWrite = downloadedData;
+      isResponseImage = YES;
+    } else if ([responseMIMEType isEqual:@"image/png"]) {
+      responseDataExtn = @"png";
+      dataToWrite = downloadedData;
+      isResponseImage = YES;
+    } else {
+      // add more non-text types here
+    }
+    // if we have an extension, save the raw data in a file with that extension
+    if (responseDataExtn && dataToWrite) {
+      // generate a response file base name like
+      NSString *responseBaseName =
+          [NSString stringWithFormat:@"fetch_%d_response", responseCounter];
+      responseDataFileName = [responseBaseName stringByAppendingPathExtension:responseDataExtn];
+      NSString *responseDataFilePath =
+          [logDirectory stringByAppendingPathComponent:responseDataFileName];
+
+      NSError *downloadedError = nil;
+      if (gIsLoggingToFile && ![dataToWrite writeToFile:responseDataFilePath
+                                                options:0
+                                                  error:&downloadedError]) {
+        NSLog(@"%@ logging write error:%@ (%@)", [self class], downloadedError,
+              responseDataFileName);
+      }
+    }
+  }
+  // we'll have one main html file per run of the app
+  NSString *htmlName = [[self class] htmlFileName];
+  NSString *htmlPath = [logDirectory stringByAppendingPathComponent:htmlName];
+
+  // if the html file exists (from logging previous fetches) we don't need
+  // to re-write the header or the scripts
+  NSFileManager *fileMgr = [NSFileManager defaultManager];
+  BOOL didFileExist = [fileMgr fileExistsAtPath:htmlPath];
+
+  NSMutableString *outputHTML = [NSMutableString string];
+
+  // we need a header to say we'll have UTF-8 text
+  if (!didFileExist) {
+    [outputHTML
+        appendFormat:@"<html><head><meta http-equiv=\"content-type\" "
+                      "content=\"text/html; charset=UTF-8\"><title>%@ HTTP fetch log %@</title>",
+                     processName, [[self class] loggingDateStamp]];
+  }
+  // now write the visible html elements
+  NSString *copyableFileName = [NSString stringWithFormat:@"fetch_%d.txt", responseCounter];
+
+  NSDate *now = [NSDate date];
+  // write the date & time, the comment, and the link to the plain-text (copyable) log
+  [outputHTML appendFormat:@"<b>%@ &nbsp;&nbsp;&nbsp;&nbsp; ", now];
+
+  NSString *comment = [self comment];
+  if (comment.length > 0) {
+    [outputHTML appendFormat:@"%@ &nbsp;&nbsp;&nbsp;&nbsp; ", comment];
+  }
+  [outputHTML
+      appendFormat:@"</b><a href='%@'><i>request/response log</i></a><br>", copyableFileName];
+  NSTimeInterval elapsed = -self.initialBeginFetchDate.timeIntervalSinceNow;
+  [outputHTML appendFormat:@"elapsed: %5.3fsec<br>", elapsed];
+
+  // write the request URL
+  NSURLRequest *request = self.request;
+  NSString *requestMethod = request.HTTPMethod;
+  NSURL *requestURL = request.URL;
+
+  // Save the request URL for next time in case this redirects.
+  NSString *redirectedFromURLString = [self.redirectedFromURL absoluteString];
+  self.redirectedFromURL = [requestURL copy];
+  if (redirectedFromURLString) {
+    [outputHTML appendFormat:@"<FONT COLOR='#990066'><i>redirected from %@</i></FONT><br>",
+                             redirectedFromURLString];
+  }
+  [outputHTML appendFormat:@"<b>request:</b> %@ <code>%@</code><br>\n", requestMethod, requestURL];
+
+  // write the request headers
+  NSDictionary *requestHeaders = request.allHTTPHeaderFields;
+  NSUInteger numberOfRequestHeaders = requestHeaders.count;
+  if (numberOfRequestHeaders > 0) {
+    // Indicate if the request is authorized; warn if the request is authorized but non-SSL
+    NSString *auth = [requestHeaders objectForKey:@"Authorization"];
+    NSString *headerDetails = @"";
+    if (auth) {
+      BOOL isInsecure = [[requestURL scheme] isEqual:@"http"];
+      if (isInsecure) {
+        // 26A0 = ⚠
+        headerDetails =
+            @"&nbsp;&nbsp;&nbsp;<i>authorized, non-SSL</i><FONT COLOR='#FF00FF'> &#x26A0;</FONT> ";
+      } else {
+        headerDetails = @"&nbsp;&nbsp;&nbsp;<i>authorized</i>";
+      }
+    }
+    NSString *cookiesHdr = [requestHeaders objectForKey:@"Cookie"];
+    if (cookiesHdr) {
+      headerDetails = [headerDetails stringByAppendingString:@"&nbsp;&nbsp;&nbsp;<i>cookies</i>"];
+    }
+    NSString *matchHdr = [requestHeaders objectForKey:@"If-Match"];
+    if (matchHdr) {
+      headerDetails = [headerDetails stringByAppendingString:@"&nbsp;&nbsp;&nbsp;<i>if-match</i>"];
+    }
+    matchHdr = [requestHeaders objectForKey:@"If-None-Match"];
+    if (matchHdr) {
+      headerDetails =
+          [headerDetails stringByAppendingString:@"&nbsp;&nbsp;&nbsp;<i>if-none-match</i>"];
+    }
+    [outputHTML appendFormat:@"&nbsp;&nbsp; headers: %d  %@<br>", (int)numberOfRequestHeaders,
+                             headerDetails];
+  } else {
+    [outputHTML appendFormat:@"&nbsp;&nbsp; headers: none<br>"];
+  }
+  // write the request post data
+  NSData *bodyData = nil;
+  NSData *loggedStreamData = self.loggedStreamData;
+  if (loggedStreamData) {
+    bodyData = loggedStreamData;
+  } else {
+    bodyData = self.bodyData;
+    if (bodyData == nil) {
+      bodyData = self.request.HTTPBody;
+    }
+  }
+  uint64_t bodyDataLength = bodyData.length;
+
+  if (bodyData.length == 0) {
+    // If the data is in a body upload file URL, read that in if it's not huge.
+    NSURL *bodyFileURL = self.bodyFileURL;
+    if (bodyFileURL) {
+      NSNumber *fileSizeNum = nil;
+      NSError *fileSizeError = nil;
+      if ([bodyFileURL getResourceValue:&fileSizeNum
+                                 forKey:NSURLFileSizeKey
+                                  error:&fileSizeError]) {
+        bodyDataLength = [fileSizeNum unsignedLongLongValue];
+        if (bodyDataLength > 0 && bodyDataLength < 50000) {
+          bodyData = [NSData dataWithContentsOfURL:bodyFileURL
+                                           options:NSDataReadingUncached
+                                             error:&fileSizeError];
+        }
+      }
+    }
+  }
+  NSString *bodyDataStr = nil;
+  NSString *postType = [requestHeaders valueForKey:@"Content-Type"];
+
+  if (bodyDataLength > 0) {
+    [outputHTML appendFormat:@"&nbsp;&nbsp; data: %llu bytes, <code>%@</code><br>\n",
+                             bodyDataLength, postType ? postType : @"(no type)"];
+    NSString *logRequestBody = self.logRequestBody;
+    if (logRequestBody) {
+      bodyDataStr = [logRequestBody copy];
+      self.logRequestBody = nil;
+    } else {
+      bodyDataStr = [self stringFromStreamData:bodyData contentType:postType];
+      if (bodyDataStr) {
+        // remove OAuth 2 client secret and refresh token
+        bodyDataStr = [[self class] snipSubstringOfString:bodyDataStr
+                                       betweenStartString:@"client_secret="
+                                                endString:@"&"];
+        bodyDataStr = [[self class] snipSubstringOfString:bodyDataStr
+                                       betweenStartString:@"refresh_token="
+                                                endString:@"&"];
+        // remove ClientLogin password
+        bodyDataStr = [[self class] snipSubstringOfString:bodyDataStr
+                                       betweenStartString:@"&Passwd="
+                                                endString:@"&"];
+      }
+    }
+  } else {
+    // no post data
+  }
+  // write the response status, MIME type, URL
+  NSInteger status = [self statusCode];
+  if (response) {
+    NSString *statusString = @"";
+    if (status != 0) {
+      if (status == 200 || status == 201) {
+        statusString = [NSString stringWithFormat:@"%ld", (long)status];
+
+        // report any JSON-RPC error
+        if ([responseJSON isKindOfClass:[NSDictionary class]]) {
+          NSDictionary *jsonError = [responseJSON objectForKey:@"error"];
+          if ([jsonError isKindOfClass:[NSDictionary class]]) {
+            NSString *jsonCode = [[jsonError valueForKey:@"code"] description];
+            NSString *jsonMessage = [jsonError valueForKey:@"message"];
+            if (jsonCode || jsonMessage) {
+              // 2691 = ⚑
+              NSString *const jsonErrFmt = @"&nbsp;&nbsp;&nbsp;<i>JSON error:</i> <FONT "
+                                           @"COLOR='#FF00FF'>%@ %@ &nbsp;&#x2691;</FONT>";
+              statusString =
+                  [statusString stringByAppendingFormat:jsonErrFmt, jsonCode ? jsonCode : @"",
+                                                        jsonMessage ? jsonMessage : @""];
+            }
+          }
+        }
+      } else {
+        // purple for anything other than 200 or 201
+        NSString *flag = status >= 400 ? @"&nbsp;&#x2691;" : @"";  // 2691 = ⚑
+        NSString *explanation = [NSHTTPURLResponse localizedStringForStatusCode:status];
+        NSString *const statusFormat = @"<FONT COLOR='#FF00FF'>%ld %@ %@</FONT>";
+        statusString = [NSString stringWithFormat:statusFormat, (long)status, explanation, flag];
+      }
+    }
+    // show the response URL only if it's different from the request URL
+    NSString *responseURLStr = @"";
+    NSURL *responseURL = response.URL;
+
+    if (responseURL && ![responseURL isEqual:request.URL]) {
+      NSString *const responseURLFormat =
+          @"<FONT COLOR='#FF00FF'>response URL:</FONT> <code>%@</code><br>\n";
+      responseURLStr = [NSString stringWithFormat:responseURLFormat, [responseURL absoluteString]];
+    }
+    [outputHTML appendFormat:@"<b>response:</b>&nbsp;&nbsp;status %@<br>\n%@", statusString,
+                             responseURLStr];
+    // Write the response headers
+    NSUInteger numberOfResponseHeaders = responseHeaders.count;
+    if (numberOfResponseHeaders > 0) {
+      // Indicate if the server is setting cookies
+      NSString *cookiesSet = [responseHeaders valueForKey:@"Set-Cookie"];
+      NSString *cookiesStr =
+          cookiesSet ? @"&nbsp;&nbsp;<FONT COLOR='#990066'><i>sets cookies</i></FONT>" : @"";
+      // Indicate if the server is redirecting
+      NSString *location = [responseHeaders valueForKey:@"Location"];
+      BOOL isRedirect = status >= 300 && status <= 399 && location != nil;
+      NSString *redirectsStr =
+          isRedirect ? @"&nbsp;&nbsp;<FONT COLOR='#990066'><i>redirects</i></FONT>" : @"";
+      [outputHTML appendFormat:@"&nbsp;&nbsp; headers: %d  %@ %@<br>\n",
+                               (int)numberOfResponseHeaders, cookiesStr, redirectsStr];
+    } else {
+      [outputHTML appendString:@"&nbsp;&nbsp; headers: none<br>\n"];
+    }
+  }
+  // error
+  if (error) {
+    [outputHTML appendFormat:@"<b>Error:</b> %@ <br>\n", error.description];
+  }
+  // Write the response data
+  if (responseDataFileName) {
+    if (isResponseImage) {
+      // Make a small inline image that links to the full image file
+      [outputHTML appendFormat:@"&nbsp;&nbsp; data: %lld bytes, <code>%@</code><br>",
+                               responseDataLength, responseMIMEType];
+      NSString *const fmt = @"<a href=\"%@\"><img src='%@' alt='image' style='border:solid "
+                            @"thin;max-height:32'></a>\n";
+      [outputHTML appendFormat:fmt, responseDataFileName, responseDataFileName];
+    } else {
+      // The response data was XML; link to the xml file
+      NSString *const fmt = @"&nbsp;&nbsp; data: %lld bytes, "
+                            @"<code>%@</code>&nbsp;&nbsp;&nbsp;<i><a href=\"%@\">%@</a></i>\n";
+      [outputHTML appendFormat:fmt, responseDataLength, responseMIMEType, responseDataFileName,
+                               [responseDataFileName pathExtension]];
+    }
+  } else {
+    // The response data was not an image; just show the length and MIME type
+    [outputHTML appendFormat:@"&nbsp;&nbsp; data: %lld bytes, <code>%@</code>\n",
+                             responseDataLength,
+                             responseMIMEType ? responseMIMEType : @"(no response type)"];
+  }
+  // Make a single string of the request and response, suitable for copying
+  // to the clipboard and pasting into a bug report
+  NSMutableString *copyable = [NSMutableString string];
+  if (comment) {
+    [copyable appendFormat:@"%@\n\n", comment];
+  }
+  [copyable appendFormat:@"%@  elapsed: %5.3fsec\n", now, elapsed];
+  if (redirectedFromURLString) {
+    [copyable appendFormat:@"Redirected from %@\n", redirectedFromURLString];
+  }
+  [copyable appendFormat:@"Request: %@ %@\n", requestMethod, requestURL];
+  if (requestHeaders.count > 0) {
+    [copyable appendFormat:@"Request headers:\n%@\n",
+                           [[self class] headersStringForDictionary:requestHeaders]];
+  }
+  if (bodyDataLength > 0) {
+    [copyable appendFormat:@"Request body: (%llu bytes)\n", bodyDataLength];
+    if (bodyDataStr) {
+      [copyable appendFormat:@"%@\n", bodyDataStr];
+    }
+    [copyable appendString:@"\n"];
+  }
+  if (response) {
+    [copyable appendFormat:@"Response: status %d\n", (int)status];
+    [copyable appendFormat:@"Response headers:\n%@\n",
+                           [[self class] headersStringForDictionary:responseHeaders]];
+    [copyable appendFormat:@"Response body: (%lld bytes)\n", responseDataLength];
+    if (responseDataLength > 0) {
+      NSString *logResponseBody = self.logResponseBody;
+      if (logResponseBody) {
+        // The user has provided the response body text.
+        responseDataStr = [logResponseBody copy];
+        self.logResponseBody = nil;
+      }
+      if (responseDataStr != nil) {
+        [copyable appendFormat:@"%@\n", responseDataStr];
+      } else {
+        // Even though it's redundant, we'll put in text to indicate that all the bytes are binary.
+        if (self.destinationFileURL) {
+          [copyable appendFormat:@"<<%lld bytes>>  to file %@\n", responseDataLength,
+                                 self.destinationFileURL.path];
+        } else {
+          [copyable appendFormat:@"<<%lld bytes>>\n", responseDataLength];
+        }
+      }
+    }
+  }
+  if (error) {
+    [copyable appendFormat:@"Error: %@\n", error];
+  }
+  // Save to log property before adding the separator
+  self.log = copyable;
+
+  [copyable appendString:@"-----------------------------------------------------------\n"];
+
+  // Write the copyable version to another file (linked to at the top of the html file, above)
+  //
+  // Ideally, something to just copy this to the clipboard like
+  //   <span onCopy='window.event.clipboardData.setData(\"Text\",
+  //   \"copyable stuff\");return false;'>Copy here.</span>"
+  // would work everywhere, but it only works in Safari as of 8/2010
+  if (gIsLoggingToFile) {
+    NSString *parentDir = [[self class] loggingDirectory];
+    NSString *copyablePath = [logDirectory stringByAppendingPathComponent:copyableFileName];
+    NSError *copyableError = nil;
+    if (![copyable writeToFile:copyablePath
+                    atomically:NO
+                      encoding:NSUTF8StringEncoding
+                         error:&copyableError]) {
+      // Error writing to file
+      NSLog(@"%@ logging write error:%@ (%@)", [self class], copyableError, copyablePath);
+    }
+    [outputHTML appendString:@"<br><hr><p>"];
+
+    // Append the HTML to the main output file
+    const char *htmlBytes = outputHTML.UTF8String;
+    NSOutputStream *stream = [NSOutputStream outputStreamToFileAtPath:htmlPath append:YES];
+    [stream open];
+    [stream write:(const uint8_t *)htmlBytes maxLength:strlen(htmlBytes)];
+    [stream close];
+
+    // Make a symlink to the latest html
+    NSString *const symlinkNameSuffix = [[self class] symlinkNameSuffix];
+    NSString *symlinkName = [processName stringByAppendingString:symlinkNameSuffix];
+    NSString *symlinkPath = [parentDir stringByAppendingPathComponent:symlinkName];
+
+    [fileMgr removeItemAtPath:symlinkPath error:NULL];
+    [fileMgr createSymbolicLinkAtPath:symlinkPath withDestinationPath:htmlPath error:NULL];
+#if TARGET_OS_IPHONE
+    static BOOL gReportedLoggingPath = NO;
+    if (!gReportedLoggingPath) {
+      gReportedLoggingPath = YES;
+      NSLog(@"GTMSessionFetcher logging to \"%@\"", parentDir);
+    }
+#endif
+  }
+}
+
+- (NSInputStream *)loggedInputStreamForInputStream:(NSInputStream *)inputStream {
+  if (!inputStream) return nil;
+  if (![GTMSessionFetcher isLoggingEnabled]) return inputStream;
+
+  [self clearLoggedStreamData];  // Clear any previous data.
+  Class monitorClass = NSClassFromString(@"GTMReadMonitorInputStream");
+  if (!monitorClass) {
+    NSString const *str = @"<<Uploaded stream log unavailable without GTMReadMonitorInputStream>>";
+    NSData *stringData = [str dataUsingEncoding:NSUTF8StringEncoding];
+    [self appendLoggedStreamData:stringData];
+    return inputStream;
+  }
+  inputStream = [monitorClass inputStreamWithStream:inputStream];
+
+  GTMReadMonitorInputStream *readMonitorInputStream = (GTMReadMonitorInputStream *)inputStream;
+  [readMonitorInputStream setReadDelegate:self];
+  SEL readSel = @selector(inputStream:readIntoBuffer:length:);
+  [readMonitorInputStream setReadSelector:readSel];
+
+  return inputStream;
+}
+
+- (GTMSessionFetcherBodyStreamProvider)loggedStreamProviderForStreamProvider:
+    (GTMSessionFetcherBodyStreamProvider)streamProvider {
+  if (!streamProvider) return nil;
+  if (![GTMSessionFetcher isLoggingEnabled]) return streamProvider;
+
+  [self clearLoggedStreamData];  // Clear any previous data.
+  Class monitorClass = NSClassFromString(@"GTMReadMonitorInputStream");
+  if (!monitorClass) {
+    NSString const *str = @"<<Uploaded stream log unavailable without GTMReadMonitorInputStream>>";
+    NSData *stringData = [str dataUsingEncoding:NSUTF8StringEncoding];
+    [self appendLoggedStreamData:stringData];
+    return streamProvider;
+  }
+  GTMSessionFetcherBodyStreamProvider loggedStreamProvider =
+      ^(GTMSessionFetcherBodyStreamProviderResponse response) {
+        streamProvider(^(NSInputStream *bodyStream) {
+          bodyStream = [self loggedInputStreamForInputStream:bodyStream];
+          response(bodyStream);
+        });
+      };
+  return loggedStreamProvider;
+}
+
+@end
+
+@implementation GTMSessionFetcher (GTMSessionFetcherLoggingUtilities)
+
+- (void)inputStream:(GTMReadMonitorInputStream *)stream
+     readIntoBuffer:(void *)buffer
+             length:(int64_t)length {
+  // append the captured data
+  NSData *data = [NSData dataWithBytesNoCopy:buffer length:(NSUInteger)length freeWhenDone:NO];
+  [self appendLoggedStreamData:data];
+}
+
+#pragma mark Fomatting Utilities
+
++ (NSString *)snipSubstringOfString:(NSString *)originalStr
+                 betweenStartString:(NSString *)startStr
+                          endString:(NSString *)endStr {
+#if SKIP_GTM_FETCH_LOGGING_SNIPPING
+  return originalStr;
+#else
+  if (!originalStr) return nil;
+
+  // Find the start string, and replace everything between it
+  // and the end string (or the end of the original string) with "_snip_"
+  NSRange startRange = [originalStr rangeOfString:startStr];
+  if (startRange.location == NSNotFound) return originalStr;
+
+  // We found the start string
+  NSUInteger originalLength = originalStr.length;
+  NSUInteger startOfTarget = NSMaxRange(startRange);
+  NSRange targetAndRest = NSMakeRange(startOfTarget, originalLength - startOfTarget);
+  NSRange endRange = [originalStr rangeOfString:endStr options:0 range:targetAndRest];
+  NSRange replaceRange;
+  if (endRange.location == NSNotFound) {
+    // Found no end marker so replace to end of string
+    replaceRange = targetAndRest;
+  } else {
+    // Replace up to the endStr
+    replaceRange = NSMakeRange(startOfTarget, endRange.location - startOfTarget);
+  }
+  NSString *result = [originalStr stringByReplacingCharactersInRange:replaceRange
+                                                          withString:@"_snip_"];
+  return result;
+#endif  // SKIP_GTM_FETCH_LOGGING_SNIPPING
+}
+
++ (NSString *)headersStringForDictionary:(NSDictionary *)dict {
+  // Format the dictionary in http header style, like
+  //   Accept:        application/json
+  //   Cache-Control: no-cache
+  //   Content-Type:  application/json; charset=utf-8
+  //
+  // Pad the key names, but not beyond 16 chars, since long custom header
+  // keys just create too much whitespace
+  NSArray *keys = [dict.allKeys sortedArrayUsingSelector:@selector(compare:)];
+
+  NSMutableString *str = [NSMutableString string];
+  for (NSString *key in keys) {
+    NSString *value = [dict valueForKey:key];
+    if ([key isEqual:@"Authorization"]) {
+      // Remove OAuth 1 token
+      value = [[self class] snipSubstringOfString:value
+                               betweenStartString:@"oauth_token=\""
+                                        endString:@"\""];
+
+      // Remove OAuth 2 bearer token (draft 16, and older form)
+      value = [[self class] snipSubstringOfString:value
+                               betweenStartString:@"Bearer "
+                                        endString:@"\n"];
+      value = [[self class] snipSubstringOfString:value
+                               betweenStartString:@"OAuth "
+                                        endString:@"\n"];
+
+      // Remove Google ClientLogin
+      value = [[self class] snipSubstringOfString:value
+                               betweenStartString:@"GoogleLogin auth="
+                                        endString:@"\n"];
+    }
+    [str appendFormat:@"  %@: %@\n", key, value];
+  }
+  return str;
+}
+
+@end
+
+#endif  // !STRIP_GTM_FETCH_LOGGING
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.h b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.h
new file mode 100644
index 0000000..68f3ac5
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.h	
@@ -0,0 +1,210 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// For best performance and convenient usage, fetchers should be generated by a common
+// GTMSessionFetcherService instance, like
+//
+//   _fetcherService = [[GTMSessionFetcherService alloc] init];
+//   GTMSessionFetcher* myFirstFetcher = [_fetcherService fetcherWithRequest:request1];
+//   GTMSessionFetcher* mySecondFetcher = [_fetcherService fetcherWithRequest:request2];
+
+#import "GTMSessionFetcher.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+// Notifications.
+
+// This notification indicates a reusable session has become invalid. It is intended mainly for the
+// service's unit tests.
+//
+// The notification object is the fetcher service.
+// The invalid session is provided via the userInfo kGTMSessionFetcherServiceSessionKey key.
+extern NSString *const kGTMSessionFetcherServiceSessionBecameInvalidNotification;
+extern NSString *const kGTMSessionFetcherServiceSessionKey;
+
+@interface GTMSessionFetcherService : NSObject <GTMSessionFetcherServiceProtocol>
+
+// Queues of delayed and running fetchers. Each dictionary contains arrays
+// of GTMSessionFetcher *fetchers, keyed by NSString *host
+@property(atomic, strong, readonly, nullable)
+    NSDictionary<NSString *, NSArray *> *delayedFetchersByHost;
+@property(atomic, strong, readonly, nullable)
+    NSDictionary<NSString *, NSArray *> *runningFetchersByHost;
+
+// A max value of 0 means no fetchers should be delayed.
+// The default limit is 10 simultaneous fetchers targeting each host.
+// This does not apply to fetchers whose useBackgroundSession property is YES. Since services are
+// not resurrected on an app relaunch, delayed fetchers would effectively be abandoned.
+@property(atomic, assign) NSUInteger maxRunningFetchersPerHost;
+
+// Properties to be applied to each fetcher; see GTMSessionFetcher.h for descriptions
+@property(atomic, strong, nullable) NSURLSessionConfiguration *configuration;
+@property(atomic, copy, nullable) GTMSessionFetcherConfigurationBlock configurationBlock;
+@property(atomic, strong, nullable) NSHTTPCookieStorage *cookieStorage;
+@property(atomic, strong, null_resettable) dispatch_queue_t callbackQueue;
+@property(atomic, copy, nullable) GTMSessionFetcherChallengeBlock challengeBlock;
+@property(atomic, strong, nullable) NSURLCredential *credential;
+@property(atomic, strong) NSURLCredential *proxyCredential;
+@property(atomic, copy, nullable) NSArray<NSString *> *allowedInsecureSchemes;
+@property(atomic, assign) BOOL allowLocalhostRequest;
+@property(atomic, assign) BOOL allowInvalidServerCertificates;
+@property(atomic, assign, getter=isRetryEnabled) BOOL retryEnabled;
+@property(atomic, copy, nullable) GTMSessionFetcherRetryBlock retryBlock;
+@property(atomic, assign) NSTimeInterval maxRetryInterval;
+@property(atomic, assign) NSTimeInterval minRetryInterval;
+@property(atomic, copy, nullable) NSDictionary<NSString *, id> *properties;
+@property(atomic, copy, nullable)
+    GTMSessionFetcherMetricsCollectionBlock metricsCollectionBlock API_AVAILABLE(
+        ios(10.0), macosx(10.12), tvos(10.0), watchos(6.0));
+
+#if GTM_BACKGROUND_TASK_FETCHING
+@property(atomic, assign) BOOL skipBackgroundTask;
+#endif
+
+// A default useragent of GTMFetcherStandardUserAgentString(nil) will be given to each fetcher
+// created by this service unless the request already has a user-agent header set.
+// This default will be added starting with builds with the SDKs for OS X 10.11 and iOS 9.
+//
+// To use the configuration's default user agent, set this property to nil.
+@property(atomic, copy, nullable) NSString *userAgent;
+
+// The authorizer to attach to the created fetchers. If a specific fetcher should
+// not authorize its requests, the fetcher's authorizer property may be set to nil
+// before the fetch begins.
+@property(atomic, strong, nullable) id<GTMFetcherAuthorizationProtocol> authorizer;
+
+// Delegate queue used by the session when calling back to the fetcher.  The default
+// is the main queue.  Changing this does not affect the queue used to call back to the
+// application; that is specified by the callbackQueue property above.
+@property(atomic, strong, null_resettable) NSOperationQueue *sessionDelegateQueue;
+
+// When enabled, indicates the same session should be used by subsequent fetchers.
+//
+// This is enabled by default.
+@property(atomic, assign) BOOL reuseSession;
+
+// Sets the delay until an unused session is invalidated.
+// The default interval is 60 seconds.
+//
+// If the interval is set to 0, then any reused session is not invalidated except by
+// explicitly invoking -resetSession.  Be aware that setting the interval to 0 thus
+// causes the session's delegate to be retained until the session is explicitly reset.
+@property(atomic, assign) NSTimeInterval unusedSessionTimeout;
+
+// If shouldReuseSession is enabled, this will force creation of a new session when future
+// fetchers begin.
+- (void)resetSession;
+
+// Create a fetcher
+//
+// These methods will return a fetcher. If successfully created, the connection
+// will hold a strong reference to it for the life of the connection as well.
+// So the caller doesn't have to hold onto the fetcher explicitly unless they
+// want to be able to monitor or cancel it.
+- (GTMSessionFetcher *)fetcherWithRequest:(NSURLRequest *)request;
+- (GTMSessionFetcher *)fetcherWithURL:(NSURL *)requestURL;
+- (GTMSessionFetcher *)fetcherWithURLString:(NSString *)requestURLString;
+
+// Common method for fetcher creation.
+//
+// -fetcherWithRequest:fetcherClass: may be overridden to customize creation of
+// fetchers.  This is the ONLY method in the GTMSessionFetcher library intended to
+// be overridden.
+- (id)fetcherWithRequest:(NSURLRequest *)request fetcherClass:(Class)fetcherClass;
+
+- (BOOL)isDelayingFetcher:(GTMSessionFetcher *)fetcher;
+
+- (NSUInteger)numberOfFetchers;  // running + delayed fetchers
+- (NSUInteger)numberOfRunningFetchers;
+- (NSUInteger)numberOfDelayedFetchers;
+
+// Return a list of all running or delayed fetchers. This includes fetchers created
+// by the service which have been started and have not yet stopped.
+//
+// Returns an array of fetcher objects, or nil if none.
+- (nullable NSArray<GTMSessionFetcher *> *)issuedFetchers;
+
+// Search for running or delayed fetchers with the specified URL.
+//
+// Returns an array of fetcher objects found, or nil if none found.
+- (nullable NSArray<GTMSessionFetcher *> *)issuedFetchersWithRequestURL:(NSURL *)requestURL;
+
+- (void)stopAllFetchers;
+
+// Holds a weak reference to `decorator`. When creating a fetcher via
+// `-fetcherWithRequest:fetcherClass:`, each registered `decorator` can inspect and potentially
+// change the fetcher's request before it starts. Decorators are invoked in the order in which
+// they are passed to this method.
+- (void)addDecorator:(id<GTMFetcherDecoratorProtocol>)decorator;
+
+// Removes a `decorator` previously passed to `-removeDecorator:`.
+- (void)removeDecorator:(id<GTMFetcherDecoratorProtocol>)decorator;
+
+// Methods for use by the fetcher class only.
+- (nullable NSURLSession *)session;
+- (nullable NSURLSession *)sessionForFetcherCreation;
+- (nullable id<NSURLSessionDelegate>)sessionDelegate;
+- (nullable NSDate *)stoppedAllFetchersDate;
+
+// The testBlock can inspect its fetcher parameter's request property to
+// determine which fetcher is being faked.
+@property(atomic, copy, nullable) GTMSessionFetcherTestBlock testBlock;
+
+@end
+
+@interface GTMSessionFetcherService (TestingSupport)
+
+// Convenience methods to create a fetcher service for testing.
+//
+// Fetchers generated by this mock fetcher service will not perform any
+// network operation, but will invoke callbacks and provide the supplied data
+// or error to the completion handler.
+//
+// You can make more customized mocks by setting the test block property of the service
+// or fetcher; the test block can inspect the fetcher's request or other properties.
+//
+// See the description of the testBlock property below.
++ (instancetype)mockFetcherServiceWithFakedData:(nullable NSData *)fakedDataOrNil
+                                     fakedError:(nullable NSError *)fakedErrorOrNil;
++ (instancetype)mockFetcherServiceWithFakedData:(nullable NSData *)fakedDataOrNil
+                                  fakedResponse:(NSHTTPURLResponse *)fakedResponse
+                                     fakedError:(nullable NSError *)fakedErrorOrNil;
+
+// DEPRECATED: Callers should use XCTestExpectation instead.
+//
+// Spin the run loop and discard events (or, if not on the main thread, just sleep the thread)
+// until all running and delayed fetchers have completed.
+//
+// This is only for use in testing or in tools without a user interface.
+//
+// Synchronous fetches should never be done by shipping apps; they are
+// sufficient reason for rejection from the app store.
+//
+// Returns NO if timed out.
+- (BOOL)waitForCompletionOfAllFetchersWithTimeout:(NSTimeInterval)timeoutInSeconds
+    __deprecated_msg("Use XCTestExpectation instead");
+
+@end
+
+@interface GTMSessionFetcherService (BackwardsCompatibilityOnly)
+
+// Clients using GTMSessionFetcher should set the cookie storage explicitly themselves;
+// this property is deprecated and will be removed soon.
+@property(atomic, assign) NSInteger cookieStorageMethod __deprecated_msg(
+    "Create an NSHTTPCookieStorage and set .cookieStorage directly.");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.m b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.m
new file mode 100644
index 0000000..e920328
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionFetcherService.m	
@@ -0,0 +1,1383 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#import "GTMSessionFetcherService.h"
+
+NSString *const kGTMSessionFetcherServiceSessionBecameInvalidNotification =
+    @"kGTMSessionFetcherServiceSessionBecameInvalidNotification";
+NSString *const kGTMSessionFetcherServiceSessionKey = @"kGTMSessionFetcherServiceSessionKey";
+
+#if !GTMSESSION_BUILD_COMBINED_SOURCES
+@interface GTMSessionFetcher (ServiceMethods)
+- (BOOL)beginFetchMayDelay:(BOOL)mayDelay
+              mayAuthorize:(BOOL)mayAuthorize
+               mayDecorate:(BOOL)mayDecorate;
+@end
+#endif  // !GTMSESSION_BUILD_COMBINED_SOURCES
+
+@interface GTMSessionFetcherService ()
+
+@property(atomic, strong, readwrite) NSDictionary *delayedFetchersByHost;
+@property(atomic, strong, readwrite) NSDictionary *runningFetchersByHost;
+
+// Ordered collection of id<GTMFetcherDecoratorProtocol>, held weakly.
+@property(atomic, strong, readonly) NSPointerArray *decoratorsPointerArray;
+
+@end
+
+// Since NSURLSession doesn't support a separate delegate per task (!), instances of this
+// class serve as a session delegate trampoline.
+//
+// This class maps a session's tasks to fetchers, and resends delegate messages to the task's
+// fetcher.
+@interface GTMSessionFetcherSessionDelegateDispatcher : NSObject <NSURLSessionDelegate>
+
+// The session for the tasks in this dispatcher's task-to-fetcher map.
+@property(atomic) NSURLSession *session;
+
+// The timer interval for invalidating a session that has no active tasks.
+@property(atomic) NSTimeInterval discardInterval;
+
+// The current discard timer.
+@property(atomic, readonly) NSTimer *discardTimer;
+
+- (instancetype)initWithParentService:(GTMSessionFetcherService *)parentService
+               sessionDiscardInterval:(NSTimeInterval)discardInterval;
+
+- (void)setFetcher:(GTMSessionFetcher *)fetcher forTask:(NSURLSessionTask *)task;
+- (void)removeFetcher:(GTMSessionFetcher *)fetcher;
+
+// Before using a session, tells the delegate dispatcher to stop the discard timer.
+- (void)startSessionUsage;
+
+// When abandoning a delegate dispatcher, we want to avoid the session retaining
+// the delegate after tasks complete.
+- (void)abandon;
+
+@end
+
+@implementation GTMSessionFetcherService {
+  NSMutableDictionary *_delayedFetchersByHost;
+  NSMutableDictionary *_runningFetchersByHost;
+  NSUInteger _maxRunningFetchersPerHost;
+
+  // When this ivar is nil, the service will not reuse sessions.
+  GTMSessionFetcherSessionDelegateDispatcher *_delegateDispatcher;
+
+  // Fetchers will wait on this if another fetcher is creating the shared NSURLSession.
+  dispatch_semaphore_t _sessionCreationSemaphore;
+
+  dispatch_queue_t _callbackQueue;
+  NSOperationQueue *_delegateQueue;
+  NSHTTPCookieStorage *_cookieStorage;
+  NSString *_userAgent;
+  NSTimeInterval _timeout;
+
+  NSURLCredential *_credential;       // Username & password.
+  NSURLCredential *_proxyCredential;  // Credential supplied to proxy servers.
+
+  NSInteger _cookieStorageMethod;
+
+  id<GTMFetcherAuthorizationProtocol> _authorizer;
+
+  // For waitForCompletionOfAllFetchersWithTimeout: we need to wait on stopped fetchers since
+  // they've not yet finished invoking their queued callbacks. This array is nil except when
+  // waiting on fetchers.
+  NSMutableArray *_stoppedFetchersToWaitFor;
+
+  // For fetchers that enqueued their callbacks before stopAllFetchers was called on the service,
+  // set a barrier so the callbacks know to bail out.
+  NSDate *_stoppedAllFetchersDate;
+}
+
+// Clang-format likes to cram all @synthesize items onto the fewest lines, rather than one-per.
+// clang-format off
+@synthesize maxRunningFetchersPerHost = _maxRunningFetchersPerHost,
+            configuration = _configuration,
+            configurationBlock = _configurationBlock,
+            cookieStorage = _cookieStorage,
+            userAgent = _userAgent,
+            challengeBlock = _challengeBlock,
+            credential = _credential,
+            proxyCredential = _proxyCredential,
+            allowedInsecureSchemes = _allowedInsecureSchemes,
+            allowLocalhostRequest = _allowLocalhostRequest,
+            allowInvalidServerCertificates = _allowInvalidServerCertificates,
+            retryEnabled = _retryEnabled,
+            retryBlock = _retryBlock,
+            maxRetryInterval = _maxRetryInterval,
+            minRetryInterval = _minRetryInterval,
+            metricsCollectionBlock = _metricsCollectionBlock,
+            properties = _properties,
+            unusedSessionTimeout = _unusedSessionTimeout,
+            decoratorsPointerArray = _decoratorsPointerArray,
+            testBlock = _testBlock;
+// clang-format on
+
+#if GTM_BACKGROUND_TASK_FETCHING
+@synthesize skipBackgroundTask = _skipBackgroundTask;
+#endif
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _delayedFetchersByHost = [[NSMutableDictionary alloc] init];
+    _runningFetchersByHost = [[NSMutableDictionary alloc] init];
+    _maxRunningFetchersPerHost = 10;
+    _cookieStorageMethod = -1;
+    _unusedSessionTimeout = 60.0;
+    _delegateDispatcher = [[GTMSessionFetcherSessionDelegateDispatcher alloc]
+         initWithParentService:self
+        sessionDiscardInterval:_unusedSessionTimeout];
+    _callbackQueue = dispatch_get_main_queue();
+
+    _delegateQueue = [[NSOperationQueue alloc] init];
+    _delegateQueue.maxConcurrentOperationCount = 1;
+    _delegateQueue.name = @"com.google.GTMSessionFetcher.NSURLSessionDelegateQueue";
+
+    _sessionCreationSemaphore = dispatch_semaphore_create(1);
+
+    // Starting with the SDKs for OS X 10.11/iOS 9, the service has a default useragent.
+    // Apps can remove this and get the default system "CFNetwork" useragent by setting the
+    // fetcher service's userAgent property to nil.
+    _userAgent = GTMFetcherStandardUserAgentString(nil);
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [self detachAuthorizer];
+  [_delegateDispatcher abandon];
+}
+
+#pragma mark Generate a new fetcher
+
+// Clients may override this method. Clients should not override any other library methods.
+- (id)fetcherWithRequest:(NSURLRequest *)request fetcherClass:(Class)fetcherClass {
+  GTMSessionFetcher *fetcher = [[fetcherClass alloc] initWithRequest:request
+                                                       configuration:self.configuration];
+  fetcher.callbackQueue = self.callbackQueue;
+  fetcher.sessionDelegateQueue = self.sessionDelegateQueue;
+  fetcher.challengeBlock = self.challengeBlock;
+  fetcher.credential = self.credential;
+  fetcher.proxyCredential = self.proxyCredential;
+  fetcher.authorizer = self.authorizer;
+  fetcher.cookieStorage = self.cookieStorage;
+  fetcher.allowedInsecureSchemes = self.allowedInsecureSchemes;
+  fetcher.allowLocalhostRequest = self.allowLocalhostRequest;
+  fetcher.allowInvalidServerCertificates = self.allowInvalidServerCertificates;
+  fetcher.configurationBlock = self.configurationBlock;
+  fetcher.retryEnabled = self.retryEnabled;
+  fetcher.retryBlock = self.retryBlock;
+  fetcher.maxRetryInterval = self.maxRetryInterval;
+  fetcher.minRetryInterval = self.minRetryInterval;
+  if (@available(iOS 10.0, *)) {
+    fetcher.metricsCollectionBlock = self.metricsCollectionBlock;
+  }
+  fetcher.properties = self.properties;
+  fetcher.service = self;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  if (self.cookieStorageMethod >= 0) {
+    [fetcher setCookieStorageMethod:self.cookieStorageMethod];
+  }
+#pragma clang diagnostic pop
+
+#if GTM_BACKGROUND_TASK_FETCHING
+  fetcher.skipBackgroundTask = self.skipBackgroundTask;
+#endif
+
+  NSString *userAgent = self.userAgent;
+  if (userAgent.length > 0 && [request valueForHTTPHeaderField:@"User-Agent"] == nil) {
+    [fetcher setRequestValue:userAgent forHTTPHeaderField:@"User-Agent"];
+  }
+  fetcher.testBlock = self.testBlock;
+
+  return fetcher;
+}
+
+- (GTMSessionFetcher *)fetcherWithRequest:(NSURLRequest *)request {
+  return [self fetcherWithRequest:request fetcherClass:[GTMSessionFetcher class]];
+}
+
+- (GTMSessionFetcher *)fetcherWithURL:(NSURL *)requestURL {
+  return [self fetcherWithRequest:[NSURLRequest requestWithURL:requestURL]];
+}
+
+- (GTMSessionFetcher *)fetcherWithURLString:(NSString *)requestURLString {
+  NSURL *url = [NSURL URLWithString:requestURLString];
+  return [self fetcherWithURL:url];
+}
+
+- (void)addDecorator:(id<GTMFetcherDecoratorProtocol>)decorator {
+  @synchronized(self) {
+    if (!_decoratorsPointerArray) {
+      _decoratorsPointerArray = [NSPointerArray weakObjectsPointerArray];
+    }
+    [_decoratorsPointerArray addPointer:(__bridge void *)decorator];
+  }
+}
+
+- (nullable NSArray<id<GTMFetcherDecoratorProtocol>> *)decorators {
+  @synchronized(self) {
+    return _decoratorsPointerArray.allObjects;
+  }
+}
+
+- (void)removeDecorator:(id<GTMFetcherDecoratorProtocol>)decorator {
+  @synchronized(self) {
+    NSUInteger i = 0;
+    for (id<GTMFetcherDecoratorProtocol> decoratorCandidate in _decoratorsPointerArray) {
+      if (decoratorCandidate == decorator) {
+        break;
+      }
+      ++i;
+    }
+    GTMSESSION_ASSERT_DEBUG(i < _decoratorsPointerArray.count,
+                            @"decorator %@ must be passed to -addDecorator: before removing",
+                            decorator);
+    if (i < _decoratorsPointerArray.count) {
+      [_decoratorsPointerArray removePointerAtIndex:i];
+    }
+  }
+}
+
+// Returns a session for the fetcher's host, or nil.
+- (NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSURLSession *session = _delegateDispatcher.session;
+    return session;
+  }
+}
+
+// Returns a session for the fetcher's host, or nil.  For shared sessions, this
+// waits on a semaphore, blocking other fetchers while the caller creates the
+// session if needed.
+- (NSURLSession *)sessionForFetcherCreation {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+    if (!_delegateDispatcher) {
+      // This fetcher is creating a non-shared session, so skip the semaphore usage.
+      return nil;
+    }
+  }
+
+  // Wait if another fetcher is currently creating a session; avoid waiting
+  // inside the @synchronized block, as that can deadlock.
+  dispatch_semaphore_wait(_sessionCreationSemaphore, DISPATCH_TIME_FOREVER);
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Before getting the NSURLSession for task creation, it is
+    // important to invalidate and nil out the session discard timer; otherwise
+    // the session can be invalidated between when it is returned to the
+    // fetcher, and when the fetcher attempts to create its NSURLSessionTask.
+    [_delegateDispatcher startSessionUsage];
+
+    NSURLSession *session = _delegateDispatcher.session;
+    if (session) {
+      // The calling fetcher will receive a preexisting session, so
+      // we can allow other fetchers to create a session.
+      dispatch_semaphore_signal(_sessionCreationSemaphore);
+    } else {
+      // No existing session was obtained, so the calling fetcher will create the session;
+      // it *must* invoke fetcherDidCreateSession: to signal the dispatcher's semaphore after
+      // the session has been created (or fails to be created) to avoid a hang.
+    }
+    return session;
+  }
+}
+
+- (id<NSURLSessionDelegate>)sessionDelegate {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _delegateDispatcher;
+  }
+}
+
+#pragma mark Queue Management
+
+- (void)addRunningFetcher:(GTMSessionFetcher *)fetcher forHost:(NSString *)host {
+  // Add to the array of running fetchers for this host, creating the array if needed.
+  NSMutableArray *runningForHost = [_runningFetchersByHost objectForKey:host];
+  if (runningForHost == nil) {
+    runningForHost = [NSMutableArray arrayWithObject:fetcher];
+    [_runningFetchersByHost setObject:runningForHost forKey:host];
+  } else {
+    [runningForHost addObject:fetcher];
+  }
+}
+
+- (void)addDelayedFetcher:(GTMSessionFetcher *)fetcher forHost:(NSString *)host {
+  // Add to the array of delayed fetchers for this host, creating the array if needed.
+  NSMutableArray *delayedForHost = [_delayedFetchersByHost objectForKey:host];
+  if (delayedForHost == nil) {
+    delayedForHost = [NSMutableArray arrayWithObject:fetcher];
+    [_delayedFetchersByHost setObject:delayedForHost forKey:host];
+  } else {
+    [delayedForHost addObject:fetcher];
+  }
+}
+
+- (BOOL)isDelayingFetcher:(GTMSessionFetcher *)fetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSString *host = fetcher.request.URL.host;
+    if (host == nil) {
+      return NO;
+    }
+    NSArray *delayedForHost = [_delayedFetchersByHost objectForKey:host];
+    NSUInteger idx = [delayedForHost indexOfObjectIdenticalTo:fetcher];
+    BOOL isDelayed = (delayedForHost != nil) && (idx != NSNotFound);
+    return isDelayed;
+  }
+}
+
+- (BOOL)fetcherShouldBeginFetching:(GTMSessionFetcher *)fetcher {
+  // Entry point from the fetcher
+  NSURL *requestURL = fetcher.request.URL;
+  NSString *host = requestURL.host;
+
+  // Addresses "file:///path" case where localhost is the implicit host.
+  if (host.length == 0 && [requestURL isFileURL]) {
+    host = @"localhost";
+  }
+
+  if (host.length == 0) {
+    // Data URIs legitimately have no host, reject other hostless URLs.
+    GTMSESSION_ASSERT_DEBUG([[requestURL scheme] isEqual:@"data"], @"%@ lacks host", fetcher);
+    return YES;
+  }
+
+  BOOL shouldBeginResult;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSMutableArray *runningForHost = [_runningFetchersByHost objectForKey:host];
+    if (runningForHost != nil && [runningForHost indexOfObjectIdenticalTo:fetcher] != NSNotFound) {
+      GTMSESSION_ASSERT_DEBUG(NO, @"%@ was already running", fetcher);
+      return YES;
+    }
+
+    BOOL shouldRunNow = (fetcher.usingBackgroundSession || _maxRunningFetchersPerHost == 0 ||
+                         _maxRunningFetchersPerHost >
+                             [[self class] numberOfNonBackgroundSessionFetchers:runningForHost]);
+    if (shouldRunNow) {
+      [self addRunningFetcher:fetcher forHost:host];
+      shouldBeginResult = YES;
+    } else {
+      [self addDelayedFetcher:fetcher forHost:host];
+      shouldBeginResult = NO;
+    }
+  }  // @synchronized(self)
+
+  // We'll save the host that serves as the key for this fetcher's array
+  // to avoid any chance of the underlying request changing, stranding
+  // the fetcher in the wrong array
+  fetcher.serviceHost = host;
+
+  return shouldBeginResult;
+}
+
+- (void)startFetcher:(GTMSessionFetcher *)fetcher {
+  [fetcher beginFetchMayDelay:NO mayAuthorize:YES mayDecorate:YES];
+}
+
+// Internal utility. Returns a fetcher's delegate if it's a dispatcher, or nil if the fetcher
+// is its own delegate (possibly via proxy) and has no dispatcher.
+- (GTMSessionFetcherSessionDelegateDispatcher *)delegateDispatcherForFetcher:
+    (GTMSessionFetcher *)fetcher {
+  GTMSessionCheckNotSynchronized(self);
+
+  NSURLSession *fetcherSession = fetcher.session;
+  if (fetcherSession) {
+    id<NSURLSessionDelegate> fetcherDelegate = fetcherSession.delegate;
+    // If the delegate is non-nil and claims to be a GTMSessionFetcher, there is no dispatcher;
+    // assume the fetcher is the delegate or has been proxied (some third-party frameworks
+    // are known to swizzle NSURLSession to proxy its delegate).
+    BOOL hasDispatcher =
+        (fetcherDelegate != nil && ![fetcherDelegate isKindOfClass:[GTMSessionFetcher class]]);
+    if (hasDispatcher) {
+      GTMSESSION_ASSERT_DEBUG(
+          [fetcherDelegate isKindOfClass:[GTMSessionFetcherSessionDelegateDispatcher class]],
+          @"Fetcher delegate class: %@", [fetcherDelegate class]);
+      return (GTMSessionFetcherSessionDelegateDispatcher *)fetcherDelegate;
+    }
+  }
+  return nil;
+}
+
+- (void)fetcherDidCreateSession:(GTMSessionFetcher *)fetcher {
+  if (fetcher.canShareSession) {
+    NSURLSession *fetcherSession = fetcher.session;
+    GTMSESSION_ASSERT_DEBUG(fetcherSession != nil, @"Fetcher missing its session: %@", fetcher);
+
+    GTMSessionFetcherSessionDelegateDispatcher *delegateDispatcher =
+        [self delegateDispatcherForFetcher:fetcher];
+    if (delegateDispatcher) {
+      GTMSESSION_ASSERT_DEBUG(delegateDispatcher.session == nil,
+                              @"Fetcher made an extra session: %@", fetcher);
+
+      // Save this fetcher's session.
+      delegateDispatcher.session = fetcherSession;
+
+      // Allow other fetchers to request this session now.
+      dispatch_semaphore_signal(_sessionCreationSemaphore);
+    }
+  }
+}
+
+- (void)fetcherDidBeginFetching:(GTMSessionFetcher *)fetcher {
+  // If this fetcher has a separate delegate with a shared session, then
+  // this fetcher should be added to the delegate's map of tasks to fetchers.
+  GTMSessionFetcherSessionDelegateDispatcher *delegateDispatcher =
+      [self delegateDispatcherForFetcher:fetcher];
+  if (delegateDispatcher) {
+    GTMSESSION_ASSERT_DEBUG(fetcher.canShareSession, @"Inappropriate shared session: %@", fetcher);
+
+    // There should already be a session, from this or a previous fetcher.
+    //
+    // Sanity check that the fetcher's session is the delegate's shared session.
+    NSURLSession *sharedSession = delegateDispatcher.session;
+    NSURLSession *fetcherSession = fetcher.session;
+    GTMSESSION_ASSERT_DEBUG(sharedSession != nil, @"Missing delegate session: %@", fetcher);
+    GTMSESSION_ASSERT_DEBUG(fetcherSession == sharedSession,
+                            @"Inconsistent session: %@ %@ (shared: %@)", fetcher, fetcherSession,
+                            sharedSession);
+
+    if (sharedSession != nil && fetcherSession == sharedSession) {
+      NSURLSessionTask *task = fetcher.sessionTask;
+      GTMSESSION_ASSERT_DEBUG(task != nil, @"Missing session task: %@", fetcher);
+
+      if (task) {
+        [delegateDispatcher setFetcher:fetcher forTask:task];
+      }
+    }
+  }
+}
+
+- (void)stopFetcher:(GTMSessionFetcher *)fetcher {
+  [fetcher stopFetching];
+}
+
+- (void)fetcherDidStop:(GTMSessionFetcher *)fetcher {
+  // Entry point from the fetcher
+  NSString *host = fetcher.serviceHost;
+  if (!host) {
+    // fetcher has been stopped previously
+    return;
+  }
+
+  // This removeFetcher: invocation is a fallback; typically, fetchers are removed from the task
+  // map when the task completes.
+  GTMSessionFetcherSessionDelegateDispatcher *delegateDispatcher =
+      [self delegateDispatcherForFetcher:fetcher];
+  [delegateDispatcher removeFetcher:fetcher];
+
+  NSMutableArray *fetchersToStart;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // If a test is waiting for all fetchers to stop, it needs to wait for this one
+    // to invoke its callbacks on the callback queue.
+    [_stoppedFetchersToWaitFor addObject:fetcher];
+
+    NSMutableArray *runningForHost = [_runningFetchersByHost objectForKey:host];
+    [runningForHost removeObject:fetcher];
+
+    NSMutableArray *delayedForHost = [_delayedFetchersByHost objectForKey:host];
+    [delayedForHost removeObject:fetcher];
+
+    while (delayedForHost.count > 0 &&
+           [[self class] numberOfNonBackgroundSessionFetchers:runningForHost] <
+               _maxRunningFetchersPerHost) {
+      // Start another delayed fetcher running, scanning for the minimum
+      // priority value, defaulting to FIFO for equal priorities
+      GTMSessionFetcher *nextFetcher = nil;
+      for (GTMSessionFetcher *delayedFetcher in delayedForHost) {
+        if (nextFetcher == nil || delayedFetcher.servicePriority < nextFetcher.servicePriority) {
+          nextFetcher = delayedFetcher;
+        }
+      }
+
+      if (nextFetcher) {
+        [self addRunningFetcher:nextFetcher forHost:host];
+        runningForHost = [_runningFetchersByHost objectForKey:host];
+
+        [delayedForHost removeObjectIdenticalTo:nextFetcher];
+
+        if (!fetchersToStart) {
+          fetchersToStart = [NSMutableArray array];
+        }
+        [fetchersToStart addObject:nextFetcher];
+      }
+    }
+
+    if (runningForHost.count == 0) {
+      // None left; remove the empty array
+      [_runningFetchersByHost removeObjectForKey:host];
+    }
+
+    if (delayedForHost.count == 0) {
+      [_delayedFetchersByHost removeObjectForKey:host];
+    }
+  }  // @synchronized(self)
+
+  // Start fetchers outside of the synchronized block to avoid a deadlock.
+  for (GTMSessionFetcher *nextFetcher in fetchersToStart) {
+    [self startFetcher:nextFetcher];
+  }
+
+  // The fetcher is no longer in the running or the delayed array,
+  // so remove its host and thread properties
+  fetcher.serviceHost = nil;
+}
+
+- (NSUInteger)numberOfFetchers {
+  NSUInteger running = [self numberOfRunningFetchers];
+  NSUInteger delayed = [self numberOfDelayedFetchers];
+  return running + delayed;
+}
+
+- (NSUInteger)numberOfRunningFetchers {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSUInteger sum = 0;
+    for (NSString *host in _runningFetchersByHost) {
+      NSArray *fetchers = [_runningFetchersByHost objectForKey:host];
+      sum += fetchers.count;
+    }
+    return sum;
+  }
+}
+
+- (NSUInteger)numberOfDelayedFetchers {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSUInteger sum = 0;
+    for (NSString *host in _delayedFetchersByHost) {
+      NSArray *fetchers = [_delayedFetchersByHost objectForKey:host];
+      sum += fetchers.count;
+    }
+    return sum;
+  }
+}
+
+- (NSArray *)issuedFetchers {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSMutableArray *allFetchers = [NSMutableArray array];
+    void (^accumulateFetchers)(id, id, BOOL *) =
+        ^(NSString *host, NSArray *fetchersForHost, BOOL *stop) {
+          [allFetchers addObjectsFromArray:fetchersForHost];
+        };
+    [_runningFetchersByHost enumerateKeysAndObjectsUsingBlock:accumulateFetchers];
+    [_delayedFetchersByHost enumerateKeysAndObjectsUsingBlock:accumulateFetchers];
+
+    GTMSESSION_ASSERT_DEBUG(allFetchers.count == [NSSet setWithArray:allFetchers].count,
+                            @"Fetcher appears multiple times\n running: %@\n delayed: %@",
+                            _runningFetchersByHost, _delayedFetchersByHost);
+
+    return allFetchers.count > 0 ? allFetchers : nil;
+  }
+}
+
+- (NSArray *)issuedFetchersWithRequestURL:(NSURL *)requestURL {
+  NSString *host = requestURL.host;
+  if (host.length == 0) return nil;
+
+  NSURL *targetURL = [requestURL absoluteURL];
+
+  NSArray *allFetchers = [self issuedFetchers];
+  NSIndexSet *indexes = [allFetchers
+      indexesOfObjectsPassingTest:^BOOL(GTMSessionFetcher *fetcher, NSUInteger idx, BOOL *stop) {
+        NSURL *fetcherURL = [fetcher.request.URL absoluteURL];
+        return [fetcherURL isEqual:targetURL];
+      }];
+
+  NSArray *result = nil;
+  if (indexes.count > 0) {
+    result = [allFetchers objectsAtIndexes:indexes];
+  }
+  return result;
+}
+
+- (void)stopAllFetchers {
+  NSArray *delayedFetchersByHost;
+  NSArray *runningFetchersByHost;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Set the time barrier so fetchers know not to call back even if
+    // the stop calls below occur after the fetchers naturally
+    // stopped and so were removed from _runningFetchersByHost,
+    // but while the callbacks were already enqueued before stopAllFetchers
+    // was invoked.
+    _stoppedAllFetchersDate = [[NSDate alloc] init];
+
+    // Remove fetchers from the delayed list to avoid fetcherDidStop: from
+    // starting more fetchers running as a side effect of stopping one
+    delayedFetchersByHost = _delayedFetchersByHost.allValues;
+    [_delayedFetchersByHost removeAllObjects];
+
+    runningFetchersByHost = _runningFetchersByHost.allValues;
+    [_runningFetchersByHost removeAllObjects];
+  }
+
+  for (NSArray *delayedForHost in delayedFetchersByHost) {
+    for (GTMSessionFetcher *fetcher in delayedForHost) {
+      [self stopFetcher:fetcher];
+    }
+  }
+
+  for (NSArray *runningForHost in runningFetchersByHost) {
+    for (GTMSessionFetcher *fetcher in runningForHost) {
+      [self stopFetcher:fetcher];
+    }
+  }
+}
+
+- (NSDate *)stoppedAllFetchersDate {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _stoppedAllFetchersDate;
+  }
+}
+
+#pragma mark Accessors
+
+- (BOOL)reuseSession {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _delegateDispatcher != nil;
+  }
+}
+
+- (void)setReuseSession:(BOOL)shouldReuse {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    BOOL wasReusing = (_delegateDispatcher != nil);
+    if (shouldReuse != wasReusing) {
+      [self abandonDispatcher];
+      if (shouldReuse) {
+        _delegateDispatcher = [[GTMSessionFetcherSessionDelegateDispatcher alloc]
+             initWithParentService:self
+            sessionDiscardInterval:_unusedSessionTimeout];
+      } else {
+        _delegateDispatcher = nil;
+      }
+    }
+  }
+}
+
+- (void)resetSession {
+  GTMSessionCheckNotSynchronized(self);
+  dispatch_semaphore_wait(_sessionCreationSemaphore, DISPATCH_TIME_FOREVER);
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+    [self resetSessionInternal];
+  }
+
+  dispatch_semaphore_signal(_sessionCreationSemaphore);
+}
+
+- (void)resetSessionInternal {
+  GTMSessionCheckSynchronized(self);
+
+  // The old dispatchers may be retained as delegates of any ongoing sessions by those sessions.
+  if (_delegateDispatcher) {
+    [self abandonDispatcher];
+    _delegateDispatcher = [[GTMSessionFetcherSessionDelegateDispatcher alloc]
+         initWithParentService:self
+        sessionDiscardInterval:_unusedSessionTimeout];
+  }
+}
+
+- (void)resetSessionForDispatcherDiscardTimer:(NSTimer *)timer {
+  GTMSessionCheckNotSynchronized(self);
+
+  dispatch_semaphore_wait(_sessionCreationSemaphore, DISPATCH_TIME_FOREVER);
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_delegateDispatcher.discardTimer == timer) {
+      // If the delegate dispatcher's current discardTimer is the same object as the timer
+      // that fired, no fetcher has recently attempted to start using the session by calling
+      // startSessionUsage, which invalidates and nils out the timer.
+      [self resetSessionInternal];
+    } else {
+      // A fetcher has invalidated the timer between its triggering and now, potentially
+      // meaning a fetcher has requested access to the NSURLSession, and may be in the process
+      // of starting a new task. The dispatcher should not be abandoned, as this can lead
+      // to a race condition between calling -finishTasksAndInvalidate on the NSURLSession
+      // and the fetcher attempting to create a new task.
+    }
+  }
+
+  dispatch_semaphore_signal(_sessionCreationSemaphore);
+}
+
+- (NSTimeInterval)unusedSessionTimeout {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _unusedSessionTimeout;
+  }
+}
+
+- (void)setUnusedSessionTimeout:(NSTimeInterval)timeout {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _unusedSessionTimeout = timeout;
+    _delegateDispatcher.discardInterval = timeout;
+  }
+}
+
+// This method should be called inside of @synchronized(self)
+- (void)abandonDispatcher {
+  GTMSessionCheckSynchronized(self);
+  [_delegateDispatcher abandon];
+}
+
+- (NSDictionary *)runningFetchersByHost {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_runningFetchersByHost copy];
+  }
+}
+
+- (void)setRunningFetchersByHost:(NSDictionary *)dict {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _runningFetchersByHost = [dict mutableCopy];
+  }
+}
+
+- (NSDictionary *)delayedFetchersByHost {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_delayedFetchersByHost copy];
+  }
+}
+
+- (void)setDelayedFetchersByHost:(NSDictionary *)dict {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _delayedFetchersByHost = [dict mutableCopy];
+  }
+}
+
+- (id<GTMFetcherAuthorizationProtocol>)authorizer {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _authorizer;
+  }
+}
+
+- (void)setAuthorizer:(id<GTMFetcherAuthorizationProtocol>)obj {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (obj != _authorizer) {
+      [self detachAuthorizer];
+    }
+
+    _authorizer = obj;
+  }
+
+  // Use the fetcher service for the authorization fetches if the auth
+  // object supports fetcher services
+  if ([obj respondsToSelector:@selector(setFetcherService:)]) {
+    [obj setFetcherService:self];
+  }
+}
+
+// This should be called inside a @synchronized(self) block except during dealloc.
+- (void)detachAuthorizer {
+  // This method is called by the fetcher service's dealloc and setAuthorizer:
+  // methods; do not override.
+  //
+  // The fetcher service retains the authorizer, and the authorizer has a
+  // weak pointer to the fetcher service (a non-zeroing pointer for
+  // compatibility with iOS 4 and Mac OS X 10.5/10.6.)
+  //
+  // When this fetcher service no longer uses the authorizer, we want to remove
+  // the authorizer's dependence on the fetcher service.  Authorizers can still
+  // function without a fetcher service.
+  if ([_authorizer respondsToSelector:@selector(fetcherService)]) {
+    id authFetcherService = [_authorizer fetcherService];
+    if (authFetcherService == self) {
+      [_authorizer setFetcherService:nil];
+    }
+  }
+}
+
+- (nonnull dispatch_queue_t)callbackQueue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _callbackQueue;
+  }  // @synchronized(self)
+}
+
+- (void)setCallbackQueue:(dispatch_queue_t)queue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _callbackQueue = queue ?: dispatch_get_main_queue();
+  }  // @synchronized(self)
+}
+
+- (NSOperationQueue *)sessionDelegateQueue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _delegateQueue;
+  }  // @synchronized(self)
+}
+
+- (void)setSessionDelegateQueue:(NSOperationQueue *)queue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _delegateQueue = queue ?: [NSOperationQueue mainQueue];
+  }  // @synchronized(self)
+}
+
+- (NSOperationQueue *)delegateQueue {
+  // Provided for compatibility with the old fetcher service.  The gtm-oauth2 code respects
+  // any custom delegate queue for calling the app.
+  return nil;
+}
+
++ (NSUInteger)numberOfNonBackgroundSessionFetchers:(NSArray *)fetchers {
+  NSUInteger sum = 0;
+  for (GTMSessionFetcher *fetcher in fetchers) {
+    if (!fetcher.usingBackgroundSession) {
+      ++sum;
+    }
+  }
+  return sum;
+}
+
+@end
+
+@implementation GTMSessionFetcherService (TestingSupport)
+
++ (instancetype)mockFetcherServiceWithFakedData:(NSData *)fakedDataOrNil
+                                     fakedError:(NSError *)fakedErrorOrNil {
+#if !GTM_DISABLE_FETCHER_TEST_BLOCK
+  NSURL *url = [NSURL URLWithString:@"http://example.invalid"];
+  NSHTTPURLResponse *fakedResponse =
+      [[NSHTTPURLResponse alloc] initWithURL:url
+                                  statusCode:(fakedErrorOrNil ? 500 : 200)HTTPVersion:@"HTTP/1.1"
+                                headerFields:nil];
+  return [self mockFetcherServiceWithFakedData:fakedDataOrNil
+                                 fakedResponse:fakedResponse
+                                    fakedError:fakedErrorOrNil];
+#else
+  GTMSESSION_ASSERT_DEBUG(0, @"Test blocks disabled");
+  return nil;
+#endif  // GTM_DISABLE_FETCHER_TEST_BLOCK
+}
+
++ (instancetype)mockFetcherServiceWithFakedData:(NSData *)fakedDataOrNil
+                                  fakedResponse:(NSHTTPURLResponse *)fakedResponse
+                                     fakedError:(NSError *)fakedErrorOrNil {
+#if !GTM_DISABLE_FETCHER_TEST_BLOCK
+  GTMSessionFetcherService *service = [[self alloc] init];
+  service.allowedInsecureSchemes = @[ @"http" ];
+  service.testBlock =
+      ^(GTMSessionFetcher *fetcherToTest, GTMSessionFetcherTestResponse testResponse) {
+        testResponse(fakedResponse, fakedDataOrNil, fakedErrorOrNil);
+      };
+  return service;
+#else
+  GTMSESSION_ASSERT_DEBUG(0, @"Test blocks disabled");
+  return nil;
+#endif  // GTM_DISABLE_FETCHER_TEST_BLOCK
+}
+
+#pragma mark Synchronous Wait for Unit Testing
+
+- (BOOL)waitForCompletionOfAllFetchersWithTimeout:(NSTimeInterval)timeoutInSeconds {
+  NSDate *giveUpDate = [NSDate dateWithTimeIntervalSinceNow:timeoutInSeconds];
+  _stoppedFetchersToWaitFor = [NSMutableArray array];
+
+  BOOL shouldSpinRunLoop = [NSThread isMainThread];
+  const NSTimeInterval kSpinInterval = 0.001;
+  BOOL didTimeOut = NO;
+  while (([self numberOfFetchers] > 0 || _stoppedFetchersToWaitFor.count > 0)) {
+    didTimeOut = [giveUpDate timeIntervalSinceNow] < 0;
+    if (didTimeOut) break;
+
+    GTMSessionFetcher *stoppedFetcher = _stoppedFetchersToWaitFor.firstObject;
+    if (stoppedFetcher) {
+      [_stoppedFetchersToWaitFor removeObject:stoppedFetcher];
+      [stoppedFetcher waitForCompletionWithTimeout:10.0 * kSpinInterval];
+    }
+
+    if (shouldSpinRunLoop) {
+      NSDate *stopDate = [NSDate dateWithTimeIntervalSinceNow:kSpinInterval];
+      [[NSRunLoop currentRunLoop] runUntilDate:stopDate];
+    } else {
+      [NSThread sleepForTimeInterval:kSpinInterval];
+    }
+  }
+  _stoppedFetchersToWaitFor = nil;
+
+  return !didTimeOut;
+}
+
+@end
+
+@implementation GTMSessionFetcherService (BackwardsCompatibilityOnly)
+
+- (NSInteger)cookieStorageMethod {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _cookieStorageMethod;
+  }
+}
+
+- (void)setCookieStorageMethod:(NSInteger)cookieStorageMethod {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _cookieStorageMethod = cookieStorageMethod;
+  }
+}
+
+@end
+
+@implementation GTMSessionFetcherSessionDelegateDispatcher {
+  __weak GTMSessionFetcherService *_parentService;
+  NSURLSession *_session;
+
+  // The task map maps NSURLSessionTasks to GTMSessionFetchers
+  NSMutableDictionary *_taskToFetcherMap;
+  // The discard timer will invalidate sessions after the session's last task completes.
+  NSTimer *_discardTimer;
+  NSTimeInterval _discardInterval;
+}
+
+@synthesize discardInterval = _discardInterval, session = _session;
+
+- (instancetype)init {
+  [self doesNotRecognizeSelector:_cmd];
+  return nil;
+}
+
+- (instancetype)initWithParentService:(GTMSessionFetcherService *)parentService
+               sessionDiscardInterval:(NSTimeInterval)discardInterval {
+  self = [super init];
+  if (self) {
+    _discardInterval = discardInterval;
+    _parentService = parentService;
+  }
+  return self;
+}
+
+- (NSString *)description {
+  return
+      [NSString stringWithFormat:@"%@ %p %@ %@", [self class], self, _session ?: @"<no session>",
+                                 _taskToFetcherMap.count > 0 ? _taskToFetcherMap : @"<no tasks>"];
+}
+
+- (NSTimer *)discardTimer {
+  GTMSessionCheckNotSynchronized(self);
+  @synchronized(self) {
+    return _discardTimer;
+  }
+}
+
+// This method should be called inside of a @synchronized(self) block.
+- (void)startDiscardTimer {
+  GTMSessionCheckSynchronized(self);
+  [_discardTimer invalidate];
+  _discardTimer = nil;
+  if (_discardInterval > 0) {
+    _discardTimer = [NSTimer timerWithTimeInterval:_discardInterval
+                                            target:self
+                                          selector:@selector(discardTimerFired:)
+                                          userInfo:nil
+                                           repeats:NO];
+    [_discardTimer setTolerance:(_discardInterval / 10)];
+    [[NSRunLoop mainRunLoop] addTimer:_discardTimer forMode:NSRunLoopCommonModes];
+  }
+}
+
+// This method should be called inside of a @synchronized(self) block.
+- (void)destroyDiscardTimer {
+  GTMSessionCheckSynchronized(self);
+  [_discardTimer invalidate];
+  _discardTimer = nil;
+}
+
+- (void)discardTimerFired:(NSTimer *)timer {
+  GTMSessionFetcherService *service;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    NSUInteger numberOfTasks = _taskToFetcherMap.count;
+    if (numberOfTasks == 0) {
+      service = _parentService;
+    }
+  }
+
+  // Inform the service that the discard timer has fired, and should check whether the
+  // service can abandon us. -resetSession cannot be called directly, as there is a
+  // race condition that must be guarded against with the NSURLSession being returned
+  // from sessionForFetcherCreation outside other locks. The service can take steps
+  // to prevent resetting the session if that has occurred.
+  //
+  // The service must be called from outside the @synchronized block.
+  [service resetSessionForDispatcherDiscardTimer:timer];
+}
+
+- (void)abandon {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [self destroySessionAndTimer];
+  }
+}
+
+- (void)startSessionUsage {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [self destroyDiscardTimer];
+  }
+}
+
+// This method should be called inside of a @synchronized(self) block.
+- (void)destroySessionAndTimer {
+  GTMSessionCheckSynchronized(self);
+  [self destroyDiscardTimer];
+
+  // Break any retain cycle from the session holding the delegate.
+  [_session finishTasksAndInvalidate];
+
+  // Immediately clear the session so no new task may be issued with it.
+  //
+  // The _taskToFetcherMap needs to stay valid until the outstanding tasks finish.
+  _session = nil;
+}
+
+- (void)setFetcher:(GTMSessionFetcher *)fetcher forTask:(NSURLSessionTask *)task {
+  GTMSESSION_ASSERT_DEBUG(fetcher != nil, @"missing fetcher");
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_taskToFetcherMap == nil) {
+      _taskToFetcherMap = [[NSMutableDictionary alloc] init];
+    }
+
+    if (fetcher) {
+      [_taskToFetcherMap setObject:fetcher forKey:task];
+      [self destroyDiscardTimer];
+    }
+  }
+}
+
+- (void)removeFetcher:(GTMSessionFetcher *)fetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    // Typically, a fetcher should be removed when its task invokes
+    // URLSession:task:didCompleteWithError:.
+    //
+    // When fetching with a testBlock, though, the task completed delegate
+    // method may not be invoked, requiring cleanup here.
+    NSArray *tasks = [_taskToFetcherMap allKeysForObject:fetcher];
+    GTMSESSION_ASSERT_DEBUG(tasks.count <= 1, @"fetcher task not unmapped: %@", tasks);
+    [_taskToFetcherMap removeObjectsForKeys:tasks];
+
+    if (_taskToFetcherMap.count == 0) {
+      [self startDiscardTimer];
+    }
+  }
+}
+
+// This helper method provides synchronized access to the task map for the delegate
+// methods below.
+- (id)fetcherForTask:(NSURLSessionTask *)task {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return [_taskToFetcherMap objectForKey:task];
+  }
+}
+
+- (void)removeTaskFromMap:(NSURLSessionTask *)task {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    [_taskToFetcherMap removeObjectForKey:task];
+  }
+}
+
+- (void)setSession:(NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _session = session;
+  }
+}
+
+- (NSURLSession *)session {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _session;
+  }
+}
+
+- (NSTimeInterval)discardInterval {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _discardInterval;
+  }
+}
+
+- (void)setDiscardInterval:(NSTimeInterval)interval {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _discardInterval = interval;
+  }
+}
+
+// NSURLSessionDelegate protocol methods.
+
+// - (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session;
+//
+// TODO(seh): How do we route this to an appropriate fetcher?
+
+- (void)URLSession:(NSURLSession *)session didBecomeInvalidWithError:(NSError *)error {
+  GTM_LOG_SESSION_DELEGATE(@"%@ %p URLSession:%@ didBecomeInvalidWithError:%@", [self class], self,
+                           session, error);
+  NSDictionary *localTaskToFetcherMap;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _session = nil;
+
+    localTaskToFetcherMap = [_taskToFetcherMap copy];
+  }
+
+  // Any "suspended" tasks may not have received callbacks from NSURLSession when the session
+  // completes; we'll call them now.
+  [localTaskToFetcherMap enumerateKeysAndObjectsUsingBlock:^(
+                             NSURLSessionTask *task, GTMSessionFetcher *fetcher, BOOL *stop) {
+    if (fetcher.session == session) {
+      // Our delegate method URLSession:task:didCompleteWithError: will rely on
+      // _taskToFetcherMap so that should still contain this fetcher.
+      NSError *canceledError = [NSError errorWithDomain:NSURLErrorDomain
+                                                   code:NSURLErrorCancelled
+                                               userInfo:nil];
+      [self URLSession:session task:task didCompleteWithError:canceledError];
+    } else {
+      GTMSESSION_ASSERT_DEBUG(0, @"Unexpected session in fetcher: %@ has %@ (expected %@)", fetcher,
+                              fetcher.session, session);
+    }
+  }];
+
+  // Our tests rely on this notification to know the session discard timer fired.
+  NSDictionary *userInfo = @{kGTMSessionFetcherServiceSessionKey : session};
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc postNotificationName:kGTMSessionFetcherServiceSessionBecameInvalidNotification
+                    object:_parentService
+                  userInfo:userInfo];
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+// NSURLSessionTaskDelegate protocol methods.
+//
+// We won't test here if the fetcher responds to these since we only want this
+// class to implement the same delegate methods the fetcher does (so NSURLSession's
+// tests for respondsToSelector: will have the same result whether the session
+// delegate is the fetcher or this dispatcher.)
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+                    newRequest:(NSURLRequest *)request
+             completionHandler:(void (^)(NSURLRequest *))completionHandler {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+  [fetcher URLSession:session
+                            task:task
+      willPerformHTTPRedirection:response
+                      newRequest:request
+               completionHandler:completionHandler];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                   task:(NSURLSessionTask *)task
+    didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+      completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential *))handler {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+  [fetcher URLSession:session task:task didReceiveChallenge:challenge completionHandler:handler];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 task:(NSURLSessionTask *)task
+    needNewBodyStream:(void (^)(NSInputStream *bodyStream))handler {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+  [fetcher URLSession:session task:task needNewBodyStream:handler];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                        task:(NSURLSessionTask *)task
+             didSendBodyData:(int64_t)bytesSent
+              totalBytesSent:(int64_t)totalBytesSent
+    totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+  [fetcher URLSession:session
+                          task:task
+               didSendBodyData:bytesSent
+                totalBytesSent:totalBytesSent
+      totalBytesExpectedToSend:totalBytesExpectedToSend];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                    task:(NSURLSessionTask *)task
+    didCompleteWithError:(NSError *)error {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+
+  // This is the usual way tasks are removed from the task map.
+  [self removeTaskFromMap:task];
+
+  [fetcher URLSession:session task:task didCompleteWithError:error];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics
+    API_AVAILABLE(ios(10.0), macosx(10.12), tvos(10.0), watchos(6.0)) {
+  id<NSURLSessionTaskDelegate> fetcher = [self fetcherForTask:task];
+  [fetcher URLSession:session task:task didFinishCollectingMetrics:metrics];
+}
+
+// NSURLSessionDataDelegate protocol methods.
+
+- (void)URLSession:(NSURLSession *)session
+              dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveResponse:(NSURLResponse *)response
+     completionHandler:(void (^)(NSURLSessionResponseDisposition))handler {
+  id<NSURLSessionDataDelegate> fetcher = [self fetcherForTask:dataTask];
+  [fetcher URLSession:session
+                dataTask:dataTask
+      didReceiveResponse:response
+       completionHandler:handler];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 dataTask:(NSURLSessionDataTask *)dataTask
+    didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask {
+  id<NSURLSessionDataDelegate> fetcher = [self fetcherForTask:dataTask];
+  GTMSESSION_ASSERT_DEBUG(fetcher != nil, @"Missing fetcher for %@", dataTask);
+  [self removeTaskFromMap:dataTask];
+  if (fetcher) {
+    GTMSESSION_ASSERT_DEBUG([fetcher isKindOfClass:[GTMSessionFetcher class]],
+                            @"Expecting GTMSessionFetcher");
+    [self setFetcher:(GTMSessionFetcher *)fetcher forTask:downloadTask];
+  }
+
+  [fetcher URLSession:session dataTask:dataTask didBecomeDownloadTask:downloadTask];
+}
+
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveData:(NSData *)data {
+  id<NSURLSessionDataDelegate> fetcher = [self fetcherForTask:dataTask];
+  [fetcher URLSession:session dataTask:dataTask didReceiveData:data];
+}
+
+- (void)URLSession:(NSURLSession *)session
+             dataTask:(NSURLSessionDataTask *)dataTask
+    willCacheResponse:(NSCachedURLResponse *)proposedResponse
+    completionHandler:(void (^)(NSCachedURLResponse *))handler {
+  id<NSURLSessionDataDelegate> fetcher = [self fetcherForTask:dataTask];
+  [fetcher URLSession:session
+               dataTask:dataTask
+      willCacheResponse:proposedResponse
+      completionHandler:handler];
+}
+
+// NSURLSessionDownloadDelegate protocol methods.
+
+- (void)URLSession:(NSURLSession *)session
+                 downloadTask:(NSURLSessionDownloadTask *)downloadTask
+    didFinishDownloadingToURL:(NSURL *)location {
+  id<NSURLSessionDownloadDelegate> fetcher = [self fetcherForTask:downloadTask];
+  [fetcher URLSession:session downloadTask:downloadTask didFinishDownloadingToURL:location];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                 downloadTask:(NSURLSessionDownloadTask *)downloadTask
+                 didWriteData:(int64_t)bytesWritten
+            totalBytesWritten:(int64_t)totalWritten
+    totalBytesExpectedToWrite:(int64_t)totalExpected {
+  id<NSURLSessionDownloadDelegate> fetcher = [self fetcherForTask:downloadTask];
+  [fetcher URLSession:session
+                   downloadTask:downloadTask
+                   didWriteData:bytesWritten
+              totalBytesWritten:totalWritten
+      totalBytesExpectedToWrite:totalExpected];
+}
+
+- (void)URLSession:(NSURLSession *)session
+          downloadTask:(NSURLSessionDownloadTask *)downloadTask
+     didResumeAtOffset:(int64_t)fileOffset
+    expectedTotalBytes:(int64_t)expectedTotalBytes {
+  id<NSURLSessionDownloadDelegate> fetcher = [self fetcherForTask:downloadTask];
+  [fetcher URLSession:session
+            downloadTask:downloadTask
+       didResumeAtOffset:fileOffset
+      expectedTotalBytes:expectedTotalBytes];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.h b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.h
new file mode 100644
index 0000000..ddfddf2
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.h	
@@ -0,0 +1,173 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// GTMSessionUploadFetcher implements Google's resumable upload protocol.
+
+//
+// This subclass of GTMSessionFetcher simulates the series of fetches
+// needed for chunked upload as a single fetch operation.
+//
+// Protocol document:  TBD
+//
+// To the client, the only fetcher that exists is this class; the subsidiary
+// fetchers needed for uploading chunks are not visible (though the most recent
+// chunk fetcher may be accessed via the -activeFetcher or -chunkFetcher methods, and
+// -responseHeaders and -statusCode reflect results from the most recent chunk
+// fetcher.)
+//
+// Chunk fetchers are discarded as soon as they have completed.
+//
+// The protocol also allows for a cancellation notification request to be sent to the
+// server to allow discarding of the currently uploaded data and this will be sent
+// automatically upon calling stopFetching if the upload has already started.
+//
+// Note: Unlike the fetcher superclass, the methods of GTMSessionUploadFetcher should
+// only be used from the main thread until further work is done to make this subclass
+// thread-safe.
+
+#import "GTMSessionFetcher.h"
+#import "GTMSessionFetcherService.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+// The value to use for file size parameters when the file size is not yet known.
+extern int64_t const kGTMSessionUploadFetcherUnknownFileSize;
+
+// Unless an application knows it needs a smaller chunk size, it should use the standard
+// chunk size, which sends the entire file as a single chunk to minimize upload overhead.
+// Setting an explicit chunk size that comfortably fits in memory is advisable for large
+// uploads.
+extern int64_t const kGTMSessionUploadFetcherStandardChunkSize;
+
+// When uploading requires data buffer allocations (such as uploading from an NSData or
+// an NSFileHandle) this is the maximum buffer size that will be created by the fetcher.
+extern int64_t const kGTMSessionUploadFetcherMaximumDemandBufferSize;
+
+// Notification that the upload location URL was provided by the server.
+extern NSString *const kGTMSessionFetcherUploadLocationObtainedNotification;
+
+// Block to provide data during uploads.
+//
+// Response data may be allocated with dataWithBytesNoCopy:length:freeWhenDone: for efficiency,
+// and released after the response block returns.
+//
+// If the length of the file being uploaded is unknown or already set, send
+// kGTMSessionUploadFetcherUnknownFileSize for |fullUploadLength|. Otherwise, set |fullUploadLength|
+// to its proper value.
+//
+// Pass nil as the data (and optionally an NSError) for a failure.
+typedef void (^GTMSessionUploadFetcherDataProviderResponse)(NSData *_Nullable data,
+                                                            int64_t fullUploadLength,
+                                                            NSError *_Nullable error);
+// Do not call the response with an NSData object with less data than the requested length unless
+// you are passing the fullUploadLength to the fetcher for the first time and it is the last chunk
+// of data in the file being uploaded.
+typedef void (^GTMSessionUploadFetcherDataProvider)(
+    int64_t offset, int64_t length, GTMSessionUploadFetcherDataProviderResponse response);
+
+// Block to be notified about the final status of the cancellation request started in stopFetching.
+//
+// |fetcher| will be the cancel request that was sent to the server, or nil if stopFetching is not
+// going to send a cancel request. If |fetcher| is provided, the other parameters correspond to the
+// completion handler of the cancellation request fetcher.
+typedef void (^GTMSessionUploadFetcherCancellationHandler)(GTMSessionFetcher *_Nullable fetcher,
+                                                           NSData *_Nullable data,
+                                                           NSError *_Nullable error);
+
+@interface GTMSessionUploadFetcher : GTMSessionFetcher
+
+// Create an upload fetcher specifying either the request or the resume location URL,
+// then set an upload data source using one of these:
+//
+//   setUploadFileURL:
+//   setUploadDataLength:provider:
+//   setUploadFileHandle:
+//   setUploadData:
+
++ (instancetype)uploadFetcherWithRequest:(NSURLRequest *)request
+                          uploadMIMEType:(NSString *)uploadMIMEType
+                               chunkSize:(int64_t)chunkSize
+                          fetcherService:(nullable GTMSessionFetcherService *)fetcherServiceOrNil;
+
+// Allows cellular access.
++ (instancetype)uploadFetcherWithLocation:(nullable NSURL *)uploadLocationURL
+                           uploadMIMEType:(NSString *)uploadMIMEType
+                                chunkSize:(int64_t)chunkSize
+                           fetcherService:(nullable GTMSessionFetcherService *)fetcherServiceOrNil;
+
++ (instancetype)uploadFetcherWithLocation:(nullable NSURL *)uploadLocationURL
+                           uploadMIMEType:(NSString *)uploadMIMEType
+                                chunkSize:(int64_t)chunkSize
+                     allowsCellularAccess:(BOOL)allowsCellularAccess
+                           fetcherService:(nullable GTMSessionFetcherService *)fetcherServiceOrNil;
+
+// Allows dataProviders for files of unknown length. Pass kGTMSessionUploadFetcherUnknownFileSize as
+// |fullLength| if the length is unknown.
+- (void)setUploadDataLength:(int64_t)fullLength
+                   provider:(nullable GTMSessionUploadFetcherDataProvider)block;
+
++ (NSArray *)uploadFetchersForBackgroundSessions;
++ (nullable instancetype)uploadFetcherForSessionIdentifier:(NSString *)sessionIdentifier;
+
+- (void)pauseFetching;
+- (void)resumeFetching;
+- (BOOL)isPaused;
+
+@property(atomic, strong, nullable) NSURL *uploadLocationURL;
+@property(atomic, strong, nullable) NSData *uploadData;
+@property(atomic, strong, nullable) NSURL *uploadFileURL;
+@property(atomic, strong, nullable) NSFileHandle *uploadFileHandle;
+@property(atomic, copy, readonly, nullable) GTMSessionUploadFetcherDataProvider uploadDataProvider;
+@property(atomic, copy) NSString *uploadMIMEType;
+@property(atomic, readonly, assign) int64_t chunkSize;
+@property(atomic, readonly, assign) int64_t currentOffset;
+// Reflects the original NSURLRequest's @c allowCellularAccess property.
+@property(atomic, readonly, assign) BOOL allowsCellularAccess;
+
+// The fetcher for the current data chunk, if any
+@property(atomic, strong, nullable) GTMSessionFetcher *chunkFetcher;
+
+// The active fetcher is the current chunk fetcher, or the upload fetcher itself
+// if no chunk fetcher has yet been created.
+@property(atomic, readonly) GTMSessionFetcher *activeFetcher;
+
+// The last request made by an active fetcher.  Useful for testing.
+@property(atomic, readonly, nullable) NSURLRequest *lastChunkRequest;
+
+// The status code from the most recently-completed fetch.
+@property(atomic, assign) NSInteger statusCode;
+
+// Invoked as part of the stop fetching process. Invoked immediately if there is no upload in
+// progress, otherwise invoked with the results of the attempt to notify the server that the
+// upload will not continue.
+//
+// Unlike other callbacks, since this is related specifically to the stopFetching flow it is not
+// cleared by stopFetching. It will instead clear itself after it is invoked or if the completion
+// has occured before stopFetching is called.
+@property(atomic, copy, nullable) GTMSessionUploadFetcherCancellationHandler cancellationHandler;
+
+// Exposed for testing only.
+@property(atomic, readonly, nullable) dispatch_queue_t delegateCallbackQueue;
+@property(atomic, readonly, nullable) GTMSessionFetcherCompletionHandler delegateCompletionHandler;
+
+@end
+
+@interface GTMSessionFetcher (GTMSessionUploadFetcherMethods)
+
+@property(readonly, nullable) GTMSessionUploadFetcher *parentUploadFetcher;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.m b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.m
new file mode 100644
index 0000000..8da9796
--- /dev/null
+++ b/ChattingApp 000/Pods/GTMSessionFetcher/Source/GTMSessionUploadFetcher.m	
@@ -0,0 +1,2001 @@
+/* Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#import "GTMSessionUploadFetcher.h"
+
+#if TARGET_OS_OSX && GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH
+// To reconnect background sessions on Mac outside +load requires importing and linking
+// AppKit to access the NSApplicationDidFinishLaunching symbol.
+#import <AppKit/AppKit.h>
+#endif
+
+static NSString *const kGTMSessionIdentifierIsUploadChunkFetcherMetadataKey = @"_upChunk";
+static NSString *const kGTMSessionIdentifierUploadFileURLMetadataKey = @"_upFileURL";
+static NSString *const kGTMSessionIdentifierUploadFileLengthMetadataKey = @"_upFileLen";
+static NSString *const kGTMSessionIdentifierUploadLocationURLMetadataKey = @"_upLocURL";
+static NSString *const kGTMSessionIdentifierUploadMIMETypeMetadataKey = @"_uploadMIME";
+static NSString *const kGTMSessionIdentifierUploadChunkSizeMetadataKey = @"_upChSize";
+static NSString *const kGTMSessionIdentifierUploadCurrentOffsetMetadataKey = @"_upOffset";
+static NSString *const kGTMSessionIdentifierUploadAllowsCellularAccess = @"_upAllowsCellularAccess";
+
+static NSString *const kGTMSessionHeaderXGoogUploadChunkGranularity =
+    @"X-Goog-Upload-Chunk-Granularity";
+static NSString *const kGTMSessionHeaderXGoogUploadCommand = @"X-Goog-Upload-Command";
+static NSString *const kGTMSessionHeaderXGoogUploadContentLength = @"X-Goog-Upload-Content-Length";
+static NSString *const kGTMSessionHeaderXGoogUploadContentType = @"X-Goog-Upload-Content-Type";
+static NSString *const kGTMSessionHeaderXGoogUploadOffset = @"X-Goog-Upload-Offset";
+static NSString *const kGTMSessionHeaderXGoogUploadProtocol = @"X-Goog-Upload-Protocol";
+static NSString *const kGTMSessionXGoogUploadProtocolResumable = @"resumable";
+static NSString *const kGTMSessionHeaderXGoogUploadSizeReceived = @"X-Goog-Upload-Size-Received";
+static NSString *const kGTMSessionHeaderXGoogUploadStatus = @"X-Goog-Upload-Status";
+static NSString *const kGTMSessionHeaderXGoogUploadURL = @"X-Goog-Upload-URL";
+
+// Property of chunk fetchers identifying the parent upload fetcher.  Non-retained NSValue.
+static NSString *const kGTMSessionUploadFetcherChunkParentKey = @"_uploadFetcherChunkParent";
+
+int64_t const kGTMSessionUploadFetcherUnknownFileSize = -1;
+
+int64_t const kGTMSessionUploadFetcherStandardChunkSize = (int64_t)LLONG_MAX;
+
+#if TARGET_OS_IPHONE
+int64_t const kGTMSessionUploadFetcherMaximumDemandBufferSize =
+    10 * 1024 * 1024;  // 10 MB for iOS, watchOS, tvOS
+#else
+int64_t const kGTMSessionUploadFetcherMaximumDemandBufferSize =
+    100 * 1024 * 1024;  // 100 MB for macOS
+#endif
+
+typedef NS_ENUM(NSUInteger, GTMSessionUploadFetcherStatus) {
+  kStatusUnknown,
+  kStatusActive,
+  kStatusFinal,
+  kStatusCancelled,
+};
+
+NSString *const kGTMSessionFetcherUploadLocationObtainedNotification =
+    @"kGTMSessionFetcherUploadLocationObtainedNotification";
+
+#if !GTMSESSION_BUILD_COMBINED_SOURCES
+@interface GTMSessionFetcher (ProtectedMethods)
+
+// Access to non-public method on the parent fetcher class.
+- (void)stopFetchReleasingCallbacks:(BOOL)shouldReleaseCallbacks;
+- (void)createSessionIdentifierWithMetadata:(NSDictionary *)metadata;
+- (GTMSessionFetcherCompletionHandler)completionHandlerWithTarget:(id)target
+                                                didFinishSelector:(SEL)finishedSelector;
+- (void)invokeOnCallbackQueue:(dispatch_queue_t)callbackQueue
+             afterUserStopped:(BOOL)afterStopped
+                        block:(void (^)(void))block;
+- (NSTimer *)retryTimer;
+- (void)beginFetchForRetry;
+
+@property(readwrite, strong) NSData *downloadedData;
+- (void)releaseCallbacks;
+
+- (NSInteger)statusCodeUnsynchronized;
+
+- (BOOL)userStoppedFetching;
+
+@end
+#endif  // !GTMSESSION_BUILD_COMBINED_SOURCES
+
+@interface GTMSessionUploadFetcher ()
+
+// Changing readonly to readwrite.
+@property(atomic, strong, readwrite) NSURLRequest *lastChunkRequest;
+@property(atomic, readwrite, assign) int64_t currentOffset;
+
+// Internal properties.
+@property(strong, atomic, nullable) GTMSessionFetcher *fetcherInFlight;  // Synchronized on self.
+
+@property(assign, atomic, getter=isSubdataGenerating) BOOL subdataGenerating;
+@property(assign, atomic) BOOL shouldInitiateOffsetQuery;
+@property(assign, atomic) int64_t uploadGranularity;
+@property(assign, atomic) BOOL allowsCellularAccess;
+
+@end
+
+@implementation GTMSessionUploadFetcher {
+  GTMSessionFetcher *_chunkFetcher;
+
+  // We'll call through to the delegate's completion handler.
+  GTMSessionFetcherCompletionHandler _delegateCompletionHandler;
+  dispatch_queue_t _delegateCallbackQueue;
+
+  // The initial fetch's body length and bytes actually sent are
+  // needed for calculating progress during subsequent chunk uploads
+  int64_t _initialBodyLength;
+  int64_t _initialBodySent;
+
+  // The upload server address for the chunks of this upload session.
+  NSURL *_uploadLocationURL;
+
+  // _uploadData, _uploadDataProvider, or _uploadFileHandle may be set, but only one.
+  NSData *_uploadData;
+  NSFileHandle *_uploadFileHandle;
+  GTMSessionUploadFetcherDataProvider _uploadDataProvider;
+  NSURL *_uploadFileURL;
+  int64_t _uploadFileLength;
+  NSString *_uploadMIMEType;
+  int64_t _chunkSize;
+  int64_t _uploadGranularity;
+  BOOL _isPaused;
+  BOOL _isRestartedUpload;
+  BOOL _shouldInitiateOffsetQuery;
+
+  // Tied to useBackgroundSession property, since this property is applicable to chunk fetchers.
+  BOOL _useBackgroundSessionOnChunkFetchers;
+
+  // We keep the latest offset into the upload data just for progress reporting.
+  int64_t _currentOffset;
+
+  NSDictionary *_recentChunkReponseHeaders;
+  NSInteger _recentChunkStatusCode;
+
+  // For waiting, we need to know the fetcher in flight, if any, and if subdata generation
+  // is in progress.
+  GTMSessionFetcher *_fetcherInFlight;
+  BOOL _isSubdataGenerating;
+  BOOL _isCancelInFlight;
+
+  GTMSessionUploadFetcherCancellationHandler _cancellationHandler;
+}
+
++ (void)load {
+#if GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH && TARGET_OS_IPHONE
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc addObserver:self
+         selector:@selector(reconnectFetchersForBackgroundSessionsOnAppLaunch:)
+             name:UIApplicationDidFinishLaunchingNotification
+           object:nil];
+#elif GTMSESSION_RECONNECT_BACKGROUND_SESSIONS_ON_LAUNCH && TARGET_OS_OSX
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc addObserver:self
+         selector:@selector(reconnectFetchersForBackgroundSessionsOnAppLaunch:)
+             name:NSApplicationDidFinishLaunchingNotification
+           object:nil];
+#else
+  [self uploadFetchersForBackgroundSessions];
+#endif
+}
+
++ (void)reconnectFetchersForBackgroundSessionsOnAppLaunch:(NSNotification *)notification {
+  // Give all other app-did-launch handlers a chance to complete before
+  // reconnecting the fetchers. Not doing this may lead to reconnecting
+  // before the app delegate has a chance to run.
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [self uploadFetchersForBackgroundSessions];
+  });
+}
+
++ (instancetype)uploadFetcherWithRequest:(NSURLRequest *)request
+                          uploadMIMEType:(NSString *)uploadMIMEType
+                               chunkSize:(int64_t)chunkSize
+                          fetcherService:(GTMSessionFetcherService *)fetcherService {
+  GTMSessionUploadFetcher *fetcher = [self uploadFetcherWithRequest:request
+                                                     fetcherService:fetcherService];
+  [fetcher setLocationURL:nil
+            uploadMIMEType:uploadMIMEType
+                 chunkSize:chunkSize
+      allowsCellularAccess:request.allowsCellularAccess];
+  return fetcher;
+}
+
++ (instancetype)uploadFetcherWithLocation:(nullable NSURL *)uploadLocationURL
+                           uploadMIMEType:(NSString *)uploadMIMEType
+                                chunkSize:(int64_t)chunkSize
+                           fetcherService:(nullable GTMSessionFetcherService *)fetcherServiceOrNil {
+  return [self uploadFetcherWithLocation:uploadLocationURL
+                          uploadMIMEType:uploadMIMEType
+                               chunkSize:chunkSize
+                    allowsCellularAccess:YES
+                          fetcherService:fetcherServiceOrNil];
+}
+
++ (instancetype)uploadFetcherWithLocation:(nullable NSURL *)uploadLocationURL
+                           uploadMIMEType:(NSString *)uploadMIMEType
+                                chunkSize:(int64_t)chunkSize
+                     allowsCellularAccess:(BOOL)allowsCellularAccess
+                           fetcherService:(GTMSessionFetcherService *)fetcherService {
+  GTMSessionUploadFetcher *fetcher = [self uploadFetcherWithRequest:nil
+                                                     fetcherService:fetcherService];
+  [fetcher setLocationURL:uploadLocationURL
+            uploadMIMEType:uploadMIMEType
+                 chunkSize:chunkSize
+      allowsCellularAccess:allowsCellularAccess];
+  return fetcher;
+}
+
++ (instancetype)uploadFetcherForSessionIdentifierMetadata:(NSDictionary *)metadata {
+  GTMSESSION_ASSERT_DEBUG(
+      [metadata[kGTMSessionIdentifierIsUploadChunkFetcherMetadataKey] boolValue],
+      @"Session identifier metadata is not for an upload fetcher: %@", metadata);
+
+  NSNumber *uploadFileLengthNum = metadata[kGTMSessionIdentifierUploadFileLengthMetadataKey];
+  GTMSESSION_ASSERT_DEBUG(uploadFileLengthNum != nil,
+                          @"Session metadata missing an UploadFileSize");
+  if (uploadFileLengthNum == nil) return nil;
+
+  int64_t uploadFileLength = [uploadFileLengthNum longLongValue];
+  GTMSESSION_ASSERT_DEBUG(uploadFileLength >= 0, @"Session metadata UploadFileSize is unknown");
+
+  NSString *uploadFileURLString = metadata[kGTMSessionIdentifierUploadFileURLMetadataKey];
+  GTMSESSION_ASSERT_DEBUG(uploadFileURLString, @"Session metadata missing an UploadFileURL");
+  if (uploadFileURLString == nil) return nil;
+
+  NSURL *uploadFileURL = [NSURL URLWithString:uploadFileURLString];
+  // There used to be a call here to NSURL checkResourceIsReachableAndReturnError: to check for the
+  // existence of the file (also tried NSFileManager fileExistsAtPath:). We've determined
+  // empirically that the check can fail at startup even when the upload file does in fact exist.
+  // For now, we'll go ahead and restore the background upload fetcher. If the file doesn't exist,
+  // it will fail later.
+
+  NSString *uploadLocationURLString = metadata[kGTMSessionIdentifierUploadLocationURLMetadataKey];
+  NSURL *uploadLocationURL =
+      uploadLocationURLString ? [NSURL URLWithString:uploadLocationURLString] : nil;
+
+  NSString *uploadMIMEType = metadata[kGTMSessionIdentifierUploadMIMETypeMetadataKey];
+  int64_t uploadChunkSize =
+      [metadata[kGTMSessionIdentifierUploadChunkSizeMetadataKey] longLongValue];
+  if (uploadChunkSize <= 0) {
+    uploadChunkSize = kGTMSessionUploadFetcherStandardChunkSize;
+  }
+  int64_t currentOffset =
+      [metadata[kGTMSessionIdentifierUploadCurrentOffsetMetadataKey] longLongValue];
+
+  BOOL allowsCellularAccess = YES;
+  if (metadata[kGTMSessionIdentifierUploadAllowsCellularAccess]) {
+    allowsCellularAccess = [metadata[kGTMSessionIdentifierUploadAllowsCellularAccess] boolValue];
+  }
+
+  GTMSESSION_ASSERT_DEBUG(currentOffset <= uploadFileLength,
+                          @"CurrentOffset (%lld) exceeds UploadFileSize (%lld)", currentOffset,
+                          uploadFileLength);
+  if (currentOffset > uploadFileLength) return nil;
+
+  GTMSessionUploadFetcher *uploadFetcher = [self uploadFetcherWithLocation:uploadLocationURL
+                                                            uploadMIMEType:uploadMIMEType
+                                                                 chunkSize:uploadChunkSize
+                                                      allowsCellularAccess:allowsCellularAccess
+                                                            fetcherService:nil];
+  // Set the upload file length before setting the upload file URL tries to determine the length.
+  [uploadFetcher setUploadFileLength:uploadFileLength];
+
+  uploadFetcher.uploadFileURL = uploadFileURL;
+  uploadFetcher.sessionUserInfo = metadata;
+  uploadFetcher.useBackgroundSession = YES;
+  uploadFetcher.currentOffset = currentOffset;
+  uploadFetcher.delegateCallbackQueue = uploadFetcher.callbackQueue;
+  uploadFetcher.allowedInsecureSchemes = @[ @"http" ];  // Allowed on restored upload fetcher.
+  return uploadFetcher;
+}
+
++ (instancetype)uploadFetcherWithRequest:(NSURLRequest *)request
+                          fetcherService:(GTMSessionFetcherService *)fetcherService {
+  // Internal utility method for instantiating fetchers
+  GTMSessionUploadFetcher *fetcher;
+  if ([fetcherService isKindOfClass:[GTMSessionFetcherService class]]) {
+    fetcher = [fetcherService fetcherWithRequest:request fetcherClass:self];
+  } else {
+    fetcher = [self fetcherWithRequest:request];
+  }
+  fetcher.useBackgroundSession = YES;
+  return fetcher;
+}
+
++ (NSPointerArray *)uploadFetcherPointerArrayForBackgroundSessions {
+  static NSPointerArray *gUploadFetcherPointerArrayForBackgroundSessions = nil;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    gUploadFetcherPointerArrayForBackgroundSessions = [NSPointerArray weakObjectsPointerArray];
+  });
+  return gUploadFetcherPointerArrayForBackgroundSessions;
+}
+
++ (instancetype)uploadFetcherForSessionIdentifier:(NSString *)sessionIdentifier {
+  GTMSESSION_ASSERT_DEBUG(sessionIdentifier != nil, @"Invalid session identifier");
+  NSArray *uploadFetchersForBackgroundSessions = [self uploadFetchersForBackgroundSessions];
+  for (GTMSessionUploadFetcher *uploadFetcher in uploadFetchersForBackgroundSessions) {
+    if ([uploadFetcher.chunkFetcher.sessionIdentifier isEqual:sessionIdentifier]) {
+      return uploadFetcher;
+    }
+  }
+  return nil;
+}
+
++ (NSArray *)uploadFetchersForBackgroundSessions {
+  NSMutableSet *restoredSessionIdentifiers = [[NSMutableSet alloc] init];
+  NSMutableArray *uploadFetchers = [[NSMutableArray alloc] init];
+  NSPointerArray *uploadFetcherPointerArray = [self uploadFetcherPointerArrayForBackgroundSessions];
+
+  // Collect the background session upload fetchers that are still in memory.
+  @synchronized(uploadFetcherPointerArray) {
+    [uploadFetcherPointerArray compact];
+    for (GTMSessionUploadFetcher *uploadFetcher in uploadFetcherPointerArray) {
+      NSString *sessionIdentifier = uploadFetcher.chunkFetcher.sessionIdentifier;
+      if (sessionIdentifier) {
+        [restoredSessionIdentifiers addObject:sessionIdentifier];
+        [uploadFetchers addObject:uploadFetcher];
+      }
+    }
+  }  // @synchronized(uploadFetcherPointerArray)
+
+  // The system may have other ongoing background upload sessions. Restore upload fetchers for those
+  // too.
+  NSArray *fetchers = [GTMSessionFetcher fetchersForBackgroundSessions];
+  for (GTMSessionFetcher *fetcher in fetchers) {
+    NSString *sessionIdentifier = fetcher.sessionIdentifier;
+    if (!sessionIdentifier || [restoredSessionIdentifiers containsObject:sessionIdentifier]) {
+      continue;
+    }
+    NSDictionary *sessionIdentifierMetadata = [fetcher sessionIdentifierMetadata];
+    if (sessionIdentifierMetadata == nil) {
+      continue;
+    }
+    if (![sessionIdentifierMetadata[kGTMSessionIdentifierIsUploadChunkFetcherMetadataKey]
+            boolValue]) {
+      continue;
+    }
+    GTMSessionUploadFetcher *uploadFetcher =
+        [self uploadFetcherForSessionIdentifierMetadata:sessionIdentifierMetadata];
+    if (uploadFetcher == nil) {
+      // Something went wrong with this upload fetcher, so kill the restored chunk fetcher.
+      [fetcher stopFetching];
+      continue;
+    }
+    [uploadFetchers addObject:uploadFetcher];
+    uploadFetcher->_chunkFetcher = fetcher;
+    uploadFetcher->_fetcherInFlight = fetcher;
+    [uploadFetcher attachSendProgressBlockToChunkFetcher:fetcher];
+    fetcher.completionHandler =
+        [fetcher completionHandlerWithTarget:uploadFetcher
+                           didFinishSelector:@selector(chunkFetcher:finishedWithData:error:)];
+
+    GTMSESSION_LOG_DEBUG(@"%@ restoring upload fetcher %@ for chunk fetcher %@", [self class],
+                         uploadFetcher, fetcher);
+  }
+  return uploadFetchers;
+}
+
+- (void)setUploadData:(NSData *)data {
+  BOOL changed = NO;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_uploadData != data) {
+      _uploadData = data;
+      changed = YES;
+    }
+  }
+  if (changed) {
+    [self setupRequestHeaders];
+  }
+}
+
+- (NSData *)uploadData {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadData;
+  }
+}
+
+- (void)setUploadFileHandle:(NSFileHandle *)fh {
+  BOOL changed = NO;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_uploadFileHandle != fh) {
+      _uploadFileHandle = fh;
+      changed = YES;
+    }
+  }
+  if (changed) {
+    [self setupRequestHeaders];
+  }
+}
+
+- (NSFileHandle *)uploadFileHandle {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadFileHandle;
+  }
+}
+
+- (void)setUploadFileURL:(NSURL *)uploadURL {
+  BOOL changed = NO;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_uploadFileURL != uploadURL) {
+      _uploadFileURL = uploadURL;
+      changed = YES;
+    }
+  }
+  if (changed) {
+    [self setupRequestHeaders];
+  }
+}
+
+- (NSURL *)uploadFileURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadFileURL;
+  }
+}
+
+- (void)setUploadFileLength:(int64_t)fullLength {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_uploadFileLength == kGTMSessionUploadFetcherUnknownFileSize &&
+        fullLength != kGTMSessionUploadFetcherUnknownFileSize) {
+      _uploadFileLength = fullLength;
+    }
+  }
+}
+
+- (void)setUploadDataLength:(int64_t)fullLength
+                   provider:(GTMSessionUploadFetcherDataProvider)block {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _uploadDataProvider = [block copy];
+    _uploadFileLength = fullLength;
+  }
+  [self setupRequestHeaders];
+}
+
+- (GTMSessionUploadFetcherDataProvider)uploadDataProvider {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadDataProvider;
+  }
+}
+
+- (void)setUploadMIMEType:(NSString *)uploadMIMEType {
+  GTMSESSION_ASSERT_DEBUG(0, @"TODO: disallow setUploadMIMEType by making declaration readonly");
+  // (and uploadMIMEType, chunksize, currentOffset)
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _uploadMIMEType = uploadMIMEType;
+  }
+}
+
+- (NSString *)uploadMIMEType {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadMIMEType;
+  }
+}
+
+- (int64_t)chunkSize {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _chunkSize;
+  }
+}
+
+- (void)setupRequestHeaders {
+  GTMSessionCheckNotSynchronized(self);
+
+#if DEBUG
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    int hasData = (_uploadData != nil) ? 1 : 0;
+    int hasFileHandle = (_uploadFileHandle != nil) ? 1 : 0;
+    int hasFileURL = (_uploadFileURL != nil) ? 1 : 0;
+    int hasUploadDataProvider = (_uploadDataProvider != nil) ? 1 : 0;
+    int numberOfSources = hasData + hasFileHandle + hasFileURL + hasUploadDataProvider;
+#pragma unused(numberOfSources)
+    GTMSESSION_ASSERT_DEBUG(numberOfSources == 1, @"Need just one upload source (%d)",
+                            numberOfSources);
+  }  // @synchronized(self)
+#endif
+
+  // Add our custom headers to the initial request indicating the data
+  // type and total size to be delivered later in the chunk requests.
+  NSMutableURLRequest *mutableRequest = [self.request mutableCopy];
+
+  GTMSESSION_ASSERT_DEBUG((mutableRequest == nil) != (_uploadLocationURL == nil),
+                          @"Request and location are mutually exclusive");
+  if (!mutableRequest) return;
+
+  [mutableRequest setValue:kGTMSessionXGoogUploadProtocolResumable
+        forHTTPHeaderField:kGTMSessionHeaderXGoogUploadProtocol];
+  [mutableRequest setValue:@"start" forHTTPHeaderField:kGTMSessionHeaderXGoogUploadCommand];
+  [mutableRequest setValue:_uploadMIMEType
+        forHTTPHeaderField:kGTMSessionHeaderXGoogUploadContentType];
+  [mutableRequest setValue:@([self fullUploadLength]).stringValue
+        forHTTPHeaderField:kGTMSessionHeaderXGoogUploadContentLength];
+
+  NSString *method = mutableRequest.HTTPMethod;
+  if (method == nil || [method caseInsensitiveCompare:@"GET"] == NSOrderedSame) {
+    [mutableRequest setHTTPMethod:@"POST"];
+  }
+
+  // Ensure the user agent header identifies this to the upload server as a
+  // GTMSessionUploadFetcher client.  The /1 can be incremented in the unlikely circumstance
+  // we need to make a bug fix in the client that the server can recognize.
+  NSString *const kUserAgentStub = @"(GTMSUF/1)";
+  NSString *userAgent = [mutableRequest valueForHTTPHeaderField:@"User-Agent"];
+  if (userAgent == nil || [userAgent rangeOfString:kUserAgentStub].location == NSNotFound) {
+    if (userAgent.length == 0) {
+      userAgent = GTMFetcherStandardUserAgentString(nil);
+    }
+    userAgent = [userAgent stringByAppendingFormat:@" %@", kUserAgentStub];
+    [mutableRequest setValue:userAgent forHTTPHeaderField:@"User-Agent"];
+  }
+  [self setRequest:mutableRequest];
+}
+
+- (void)setLocationURL:(nullable NSURL *)location
+          uploadMIMEType:(NSString *)uploadMIMEType
+               chunkSize:(int64_t)chunkSize
+    allowsCellularAccess:(BOOL)allowsCellularAccess {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    GTMSESSION_ASSERT_DEBUG(chunkSize > 0, @"chunk size is zero");
+
+    _allowsCellularAccess = allowsCellularAccess;
+
+    // When resuming an upload, set the known upload target URL.
+    _uploadLocationURL = location;
+
+    _uploadMIMEType = uploadMIMEType;
+    _chunkSize = chunkSize;
+
+    // Indicate that we've not yet determined the file handle's length
+    _uploadFileLength = kGTMSessionUploadFetcherUnknownFileSize;
+
+    // Indicate that we've not yet determined the upload fetcher status
+    _recentChunkStatusCode = -1;
+
+    // If this is restarting an upload begun by another fetcher,
+    // the location is specified but the request is nil
+    _isRestartedUpload = (location != nil);
+  }  // @synchronized(self)
+}
+
+- (int64_t)fullUploadLength {
+  int64_t result;
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_uploadData) {
+      result = (int64_t)_uploadData.length;
+    } else {
+      if (_uploadFileLength == kGTMSessionUploadFetcherUnknownFileSize) {
+        if (_uploadFileHandle) {
+          // First time through, seek to end to determine file length
+          _uploadFileLength = (int64_t)[_uploadFileHandle seekToEndOfFile];
+        } else if (_uploadDataProvider) {
+          // _uploadFileLength is set when the _uploadDataProvider is set.
+          GTMSESSION_ASSERT_DEBUG(_uploadFileLength >= 0, @"No uploadDataProvider length set");
+        } else {
+          NSNumber *filesizeNum;
+          NSError *valueError;
+          if ([_uploadFileURL getResourceValue:&filesizeNum
+                                        forKey:NSURLFileSizeKey
+                                         error:&valueError]) {
+            _uploadFileLength = filesizeNum.longLongValue;
+          } else {
+            GTMSESSION_ASSERT_DEBUG(NO, @"Cannot get file size: %@\n  %@", valueError,
+                                    _uploadFileURL.path);
+            _uploadFileLength = 0;
+          }
+        }
+      }
+      result = _uploadFileLength;
+    }
+  }  // @synchronized(self)
+  return result;
+}
+
+// Make a subdata of the upload data.
+- (void)generateChunkSubdataWithOffset:(int64_t)offset
+                                length:(int64_t)length
+                              response:(GTMSessionUploadFetcherDataProviderResponse)response {
+  GTMSessionUploadFetcherDataProvider uploadDataProvider = self.uploadDataProvider;
+  if (uploadDataProvider) {
+    uploadDataProvider(offset, length, response);
+    return;
+  }
+
+  NSData *uploadData = self.uploadData;
+  if (uploadData) {
+    // NSData provided.
+    NSData *resultData;
+    if (offset == 0 && length == (int64_t)uploadData.length) {
+      resultData = uploadData;
+    } else {
+      int64_t dataLength = (int64_t)uploadData.length;
+      // Ensure our range is valid.  b/18007814
+      if (offset + length > dataLength) {
+        NSString *errorMessage = [NSString
+            stringWithFormat:
+                @"Range invalid for upload data.  offset: %lld\tlength: %lld\tdataLength: %lld",
+                offset, length, dataLength];
+        GTMSESSION_ASSERT_DEBUG(NO, @"%@", errorMessage);
+        response(nil, kGTMSessionUploadFetcherUnknownFileSize,
+                 [self uploadChunkUnavailableErrorWithDescription:errorMessage]);
+        return;
+      }
+      NSRange range = NSMakeRange((NSUInteger)offset, (NSUInteger)length);
+
+      @try {
+        resultData = [uploadData subdataWithRange:range];
+      } @catch (NSException *exception) {
+        NSString *errorMessage = exception.description;
+        GTMSESSION_ASSERT_DEBUG(NO, @"%@", errorMessage);
+        response(nil, kGTMSessionUploadFetcherUnknownFileSize,
+                 [self uploadChunkUnavailableErrorWithDescription:errorMessage]);
+        return;
+      }
+    }
+    response(resultData, kGTMSessionUploadFetcherUnknownFileSize, nil);
+    return;
+  }
+  NSURL *uploadFileURL = self.uploadFileURL;
+  if (uploadFileURL) {
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+      [self generateChunkSubdataFromFileURL:uploadFileURL
+                                     offset:offset
+                                     length:length
+                                   response:response];
+    });
+    return;
+  }
+  GTMSESSION_ASSERT_DEBUG(_uploadFileHandle, @"Unexpectedly missing upload data package");
+  NSFileHandle *uploadFileHandle = self.uploadFileHandle;
+  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+    [self generateChunkSubdataFromFileHandle:uploadFileHandle
+                                      offset:offset
+                                      length:length
+                                    response:response];
+  });
+}
+
+- (void)generateChunkSubdataFromFileHandle:(NSFileHandle *)fileHandle
+                                    offset:(int64_t)offset
+                                    length:(int64_t)length
+                                  response:(GTMSessionUploadFetcherDataProviderResponse)response {
+  NSData *resultData;
+  NSError *error;
+  @try {
+    [fileHandle seekToFileOffset:(unsigned long long)offset];
+    resultData = [fileHandle readDataOfLength:(NSUInteger)length];
+  } @catch (NSException *exception) {
+    GTMSESSION_ASSERT_DEBUG(NO, @"uploadFileHandle failed to read, %@", exception);
+    error = [self uploadChunkUnavailableErrorWithDescription:exception.description];
+  }
+  // The response always re-dispatches to the main thread, so we skip doing that here.
+  response(resultData, kGTMSessionUploadFetcherUnknownFileSize, error);
+}
+
+- (void)generateChunkSubdataFromFileURL:(NSURL *)fileURL
+                                 offset:(int64_t)offset
+                                 length:(int64_t)length
+                               response:(GTMSessionUploadFetcherDataProviderResponse)response {
+  GTMSessionCheckNotSynchronized(self);
+
+  NSData *resultData;
+  NSError *error;
+  int64_t fullUploadLength = [self fullUploadLength];
+  NSData *mappedData =
+      [NSData dataWithContentsOfURL:fileURL
+                            options:NSDataReadingMappedAlways + NSDataReadingUncached
+                              error:&error];
+  if (!mappedData) {
+    // We could not create an NSData by memory-mapping the file.
+#if TARGET_IPHONE_SIMULATOR
+    // NSTemporaryDirectory() can differ in the simulator between app restarts,
+    // yet the contents for the new path remains unchanged, so try the latest temp path.
+    if ([error.domain isEqual:NSCocoaErrorDomain] && (error.code == NSFileReadNoSuchFileError)) {
+      NSString *filename = [fileURL lastPathComponent];
+      NSString *filePath = [NSTemporaryDirectory() stringByAppendingPathComponent:filename];
+      NSURL *newFileURL = [NSURL fileURLWithPath:filePath];
+      if (![newFileURL isEqual:fileURL]) {
+        [self generateChunkSubdataFromFileURL:newFileURL
+                                       offset:offset
+                                       length:length
+                                     response:response];
+        return;
+      }
+    }
+#endif
+
+    // If the file is just too large to create an NSData for, or if for some other reason we can't
+    // map it, create an NSFileHandle instead to read a subset into an NSData.
+#if DEBUG
+    NSNumber *fileSizeNum;
+    BOOL hasFileSize = [fileURL getResourceValue:&fileSizeNum forKey:NSURLFileSizeKey error:NULL];
+    GTMSESSION_LOG_DEBUG(@"Note: uploadFileURL is falling back to creating upload chunks by reading"
+                         @" an NSFileHandle since uploadFileURL failed to map the upload file,"
+                         @" file size %@, %@",
+                         hasFileSize ? fileSizeNum : @"unknown", error);
+#endif
+
+    NSFileHandle *fileHandle = [NSFileHandle fileHandleForReadingFromURL:fileURL error:&error];
+    if (fileHandle != nil) {
+      [self generateChunkSubdataFromFileHandle:fileHandle
+                                        offset:offset
+                                        length:length
+                                      response:response];
+      return;
+    }
+    GTMSESSION_ASSERT_DEBUG(NO, @"uploadFileURL failed to read, %@", error);
+    // Fall through with the error.
+  } else {
+    // Successfully created an NSData by memory-mapping the file.
+    if ((NSUInteger)(offset + length) > mappedData.length) {
+      NSString *errorMessage = [NSString
+          stringWithFormat:@"Range invalid for upload data.  offset: %lld\tlength: "
+                           @"%lld\tdataLength: %lld\texpected UploadLength: %lld",
+                           offset, length, (long long)mappedData.length, fullUploadLength];
+      GTMSESSION_ASSERT_DEBUG(NO, @"%@", errorMessage);
+      response(nil, kGTMSessionUploadFetcherUnknownFileSize,
+               [self uploadChunkUnavailableErrorWithDescription:errorMessage]);
+      return;
+    }
+    if (offset > 0 || length < fullUploadLength) {
+      NSRange range = NSMakeRange((NSUInteger)offset, (NSUInteger)length);
+      resultData = [mappedData subdataWithRange:range];
+    } else {
+      resultData = mappedData;
+    }
+  }
+  // The response always re-dispatches to the main thread, so we skip re-dispatching here.
+  response(resultData, kGTMSessionUploadFetcherUnknownFileSize, error);
+}
+
+- (NSError *)uploadChunkUnavailableErrorWithDescription:(NSString *)description {
+  // The description in the userInfo is intended as a clue to programmers, not
+  // for client code to examine or rely on.
+  NSDictionary *userInfo = @{@"description" : description};
+  return [NSError errorWithDomain:kGTMSessionFetcherErrorDomain
+                             code:GTMSessionFetcherErrorUploadChunkUnavailable
+                         userInfo:userInfo];
+}
+
+- (NSError *)prematureFailureErrorWithUserInfo:(NSDictionary *)userInfo {
+  // An error for if we get an unexpected status from the upload server or
+  // otherwise cannot continue.  This is an issue beyond the upload protocol;
+  // there's no way the client can do anything useful except give up.
+  NSError *error = [NSError errorWithDomain:kGTMSessionFetcherStatusDomain
+                                       code:501  // Not implemented
+                                   userInfo:userInfo];
+  return error;
+}
+
++ (GTMSessionUploadFetcherStatus)uploadStatusFromResponseHeaders:(NSDictionary *)responseHeaders {
+  NSString *statusString = [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadStatus];
+  if ([statusString isEqual:@"active"]) {
+    return kStatusActive;
+  }
+  if ([statusString isEqual:@"final"]) {
+    return kStatusFinal;
+  }
+  if ([statusString isEqual:@"cancelled"]) {
+    return kStatusCancelled;
+  }
+  return kStatusUnknown;
+}
+
+#pragma mark Method overrides affecting the initial fetch only
+
+- (void)setCompletionHandler:(GTMSessionFetcherCompletionHandler)handler {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _delegateCompletionHandler = handler;
+  }
+}
+
+- (void)setDelegateCallbackQueue:(nullable dispatch_queue_t)queue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _delegateCallbackQueue = queue;
+  }
+}
+
+- (nullable dispatch_queue_t)delegateCallbackQueue {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _delegateCallbackQueue;
+  }
+}
+
+- (BOOL)isRestartedUpload {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _isRestartedUpload;
+  }
+}
+
+- (nullable GTMSessionFetcher *)chunkFetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _chunkFetcher;
+  }
+}
+
+- (void)setChunkFetcher:(nullable GTMSessionFetcher *)fetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _chunkFetcher = fetcher;
+  }
+}
+
+- (void)setFetcherInFlight:(nullable GTMSessionFetcher *)fetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _fetcherInFlight = fetcher;
+  }
+}
+
+- (nullable GTMSessionFetcher *)fetcherInFlight {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _fetcherInFlight;
+  }
+}
+
+- (void)setCancellationHandler:
+    (nullable GTMSessionUploadFetcherCancellationHandler)cancellationHandler {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _cancellationHandler = cancellationHandler;
+  }
+}
+
+- (nullable GTMSessionUploadFetcherCancellationHandler)cancellationHandler {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _cancellationHandler;
+  }
+}
+
+- (void)beginFetchForRetry {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Override the superclass to reset the initial body length and fetcher-in-flight,
+  // then call the superclass implementation.
+  [self setInitialBodyLength:[self bodyLength]];
+
+  GTMSESSION_ASSERT_DEBUG(self.fetcherInFlight == nil, @"unexpected fetcher in flight: %@",
+                          self.fetcherInFlight);
+  self.fetcherInFlight = self;
+  [super beginFetchForRetry];
+}
+
+- (void)beginFetchWithCompletionHandler:(GTMSessionFetcherCompletionHandler)handler {
+  GTMSessionCheckNotSynchronized(self);
+
+  [self setInitialBodyLength:[self bodyLength]];
+
+  // We'll hold onto the superclass's callback queue so we can invoke the handler
+  // even after the superclass has released the queue and its callback handler, as
+  // happens during auth failure.
+  [self setDelegateCallbackQueue:self.callbackQueue];
+  self.completionHandler = handler;
+
+  if ([self isRestartedUpload]) {
+    // When restarting an upload, we know the destination location for chunk fetches,
+    // but we need to query to find the initial offset.
+    if (![self isPaused]) {
+      [self sendQueryForUploadOffsetWithFetcherProperties:self.properties];
+    }
+    return;
+  }
+  // We don't want to call into the client's completion block immediately
+  // after the finish of the initial connection (the delegate is called only
+  // when uploading finishes), so we substitute our own completion block to be
+  // called when the initial connection finishes
+  GTMSESSION_ASSERT_DEBUG(self.fetcherInFlight == nil, @"unexpected fetcher in flight: %@",
+                          self.fetcherInFlight);
+
+  self.fetcherInFlight = self;
+  [super beginFetchWithCompletionHandler:^(NSData *data, NSError *error) {
+    self.fetcherInFlight = nil;
+    // callback
+
+    BOOL hasTestBlock = (self.testBlock != nil);
+    if (![self isRestartedUpload] && !hasTestBlock) {
+      if (error == nil) {
+        [self beginChunkFetches];
+      } else {
+        if ([self retryTimer] == nil) {
+          [self invokeFinalCallbackWithData:nil error:error shouldInvalidateLocation:YES];
+        }
+      }
+    } else {
+      // If there was no initial request, then this fetch is resuming some
+      // other uploadFetcher's initial request, and the superclass's connection
+      // is never used, so at this point we call the user's actual completion
+      // block.
+      if (!hasTestBlock) {
+        [self invokeFinalCallbackWithData:data error:error shouldInvalidateLocation:YES];
+      } else {
+        // There was a test block, so we won't do chunk fetches, but we simulate obtaining
+        // the data to be uploaded from the upload data provider block or the file handle,
+        // and then call back.
+        [self generateChunkSubdataWithOffset:0
+                                      length:[self fullUploadLength]
+                                    response:^(NSData *generateData, int64_t fullUploadLength,
+                                               NSError *generateError) {
+                                      [self invokeFinalCallbackWithData:data
+                                                                  error:error
+                                               shouldInvalidateLocation:YES];
+                                    }];
+      }
+    }
+  }];
+}
+
+- (void)beginChunkFetches {
+  GTMSessionCheckNotSynchronized(self);
+
+#if DEBUG
+  // The initial response of the resumable upload protocol should have an
+  // empty body
+  //
+  // This assert typically happens because the upload create/edit link URL was
+  // not supplied with the request, and the server is thus expecting a non-
+  // resumable request/response.
+  if (self.downloadedData.length > 0) {
+    NSData *downloadedData = self.downloadedData;
+    NSString *str = [[NSString alloc] initWithData:downloadedData encoding:NSUTF8StringEncoding];
+#pragma unused(str)
+    GTMSESSION_ASSERT_DEBUG(NO, @"unexpected response data (uploading to the wrong URL?)\n%@", str);
+  }
+#endif
+
+  // We need to get the upload URL from the location header to continue.
+  NSDictionary *responseHeaders = [self responseHeaders];
+
+  [self retrieveUploadChunkGranularityFromResponseHeaders:responseHeaders];
+
+  GTMSessionUploadFetcherStatus uploadStatus =
+      [[self class] uploadStatusFromResponseHeaders:responseHeaders];
+  GTMSESSION_ASSERT_DEBUG(uploadStatus != kStatusUnknown,
+                          @"beginChunkFetches has unexpected upload status for headers %@",
+                          responseHeaders);
+
+  BOOL isPrematureStop = (uploadStatus == kStatusFinal) || (uploadStatus == kStatusCancelled);
+
+  NSString *uploadLocationURLStr = [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadURL];
+  BOOL hasUploadLocation = (uploadLocationURLStr.length > 0);
+
+  if (isPrematureStop || !hasUploadLocation) {
+    GTMSESSION_ASSERT_DEBUG(NO, @"Premature failure: upload-status:\"%@\"  location:%@",
+                            [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadStatus],
+                            uploadLocationURLStr);
+    // We cannot continue since we do not know the location to use
+    // as our upload destination.
+    NSDictionary *userInfo = nil;
+    NSData *downloadedData = self.downloadedData;
+    if (downloadedData.length > 0) {
+      userInfo = @{kGTMSessionFetcherStatusDataKey : downloadedData};
+    }
+    NSError *failureError = [self prematureFailureErrorWithUserInfo:userInfo];
+    [self invokeFinalCallbackWithData:nil error:failureError shouldInvalidateLocation:YES];
+    return;
+  }
+
+  self.uploadLocationURL = [NSURL URLWithString:uploadLocationURLStr];
+
+  NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  [nc postNotificationName:kGTMSessionFetcherUploadLocationObtainedNotification object:self];
+
+  // we've now sent all of the initial post body data, so we need to include
+  // its size in future progress indicator callbacks
+  [self setInitialBodySent:[self initialBodyLength]];
+
+  // just in case the user paused us during the initial fetch...
+  if (![self isPaused]) {
+    [self uploadNextChunkWithOffset:0];
+  }
+}
+
+- (void)URLSession:(NSURLSession *)session
+                        task:(NSURLSessionTask *)task
+             didSendBodyData:(int64_t)bytesSent
+              totalBytesSent:(int64_t)totalBytesSent
+    totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend {
+  // Overrides the superclass.
+  [self invokeDelegateWithDidSendBytes:bytesSent
+                        totalBytesSent:totalBytesSent
+              totalBytesExpectedToSend:totalBytesExpectedToSend + [self fullUploadLength]];
+}
+
+- (BOOL)shouldReleaseCallbacksUponCompletion {
+  // Overrides the superclass.
+
+  // We don't want the superclass to release the delegate and callback
+  // blocks once the initial fetch has finished
+  //
+  // This is invoked for only successful completion of the connection;
+  // an error always will invoke and release the callbacks
+  return NO;
+}
+
+- (void)invokeFinalCallbackWithData:(NSData *)data
+                              error:(NSError *)error
+           shouldInvalidateLocation:(BOOL)shouldInvalidateLocation {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (shouldInvalidateLocation) {
+      _uploadLocationURL = nil;
+    }
+
+    dispatch_queue_t queue = _delegateCallbackQueue;
+    GTMSessionFetcherCompletionHandler handler = _delegateCompletionHandler;
+    if (queue && handler) {
+      [self invokeOnCallbackQueue:queue
+                 afterUserStopped:NO
+                            block:^{
+                              handler(data, error);
+                            }];
+    }
+  }  // @synchronized(self)
+
+  [self releaseUploadAndBaseCallbacks:!self.userStoppedFetching];
+}
+
+- (void)releaseUploadAndBaseCallbacks:(BOOL)shouldReleaseCancellation {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _delegateCallbackQueue = nil;
+    _delegateCompletionHandler = nil;
+    _uploadDataProvider = nil;
+    if (shouldReleaseCancellation) {
+      _cancellationHandler = nil;
+    }
+  }
+
+  // Release the base class's callbacks, too, if needed.
+  [self releaseCallbacks];
+}
+
+- (void)stopFetchReleasingCallbacks:(BOOL)shouldReleaseCallbacks {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Clear _fetcherInFlight when stopped. Moved from stopFetching, since that's a public method,
+  // where this method does the work. Fixes issue clearing value when retryBlock included.
+  GTMSessionFetcher *fetcherInFlight = self.fetcherInFlight;
+  if (fetcherInFlight == self) {
+    self.fetcherInFlight = nil;
+  }
+
+  [super stopFetchReleasingCallbacks:shouldReleaseCallbacks];
+
+  if (shouldReleaseCallbacks) {
+    [self releaseUploadAndBaseCallbacks:NO];
+  }
+}
+
+#pragma mark Chunk fetching methods
+
+- (void)uploadNextChunkWithOffset:(int64_t)offset {
+  // use the properties in each chunk fetcher
+  NSDictionary *props = [self properties];
+
+  [self uploadNextChunkWithOffset:offset fetcherProperties:props];
+}
+
+- (void)sendQueryForUploadOffsetWithFetcherProperties:(NSDictionary *)props {
+  GTMSessionFetcher *queryFetcher = [self uploadFetcherWithProperties:props isQueryFetch:YES];
+  queryFetcher.bodyData = [NSData data];
+
+  NSString *originalComment = self.comment;
+  [queryFetcher
+      setCommentWithFormat:@"%@ (query offset)", originalComment ? originalComment : @"upload"];
+
+  [queryFetcher setRequestValue:@"query" forHTTPHeaderField:kGTMSessionHeaderXGoogUploadCommand];
+
+  self.fetcherInFlight = queryFetcher;
+  [queryFetcher beginFetchWithDelegate:self
+                     didFinishSelector:@selector(queryFetcher:finishedWithData:error:)];
+}
+
+- (void)queryFetcher:(GTMSessionFetcher *)queryFetcher
+    finishedWithData:(NSData *)data
+               error:(NSError *)error {
+  self.fetcherInFlight = nil;
+
+  NSDictionary *responseHeaders = [queryFetcher responseHeaders];
+  NSString *sizeReceivedHeader;
+
+  GTMSessionUploadFetcherStatus uploadStatus =
+      [[self class] uploadStatusFromResponseHeaders:responseHeaders];
+  GTMSESSION_ASSERT_DEBUG(uploadStatus != kStatusUnknown || error != nil,
+                          @"query fetcher completion has unexpected upload status for headers %@",
+                          responseHeaders);
+
+  if (error == nil) {
+    sizeReceivedHeader = [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadSizeReceived];
+
+    if (uploadStatus == kStatusCancelled ||
+        (uploadStatus == kStatusActive && sizeReceivedHeader == nil)) {
+      NSDictionary *userInfo = nil;
+      if (data.length > 0) {
+        userInfo = @{kGTMSessionFetcherStatusDataKey : data};
+      }
+      error = [self prematureFailureErrorWithUserInfo:userInfo];
+    }
+  }
+
+  if (error == nil) {
+    int64_t offset = [sizeReceivedHeader longLongValue];
+    int64_t fullUploadLength = [self fullUploadLength];
+    if (uploadStatus == kStatusFinal ||
+        (offset >= fullUploadLength &&
+         fullUploadLength != kGTMSessionUploadFetcherUnknownFileSize)) {
+      // Handle we're done
+      [self chunkFetcher:queryFetcher finishedWithData:data error:nil];
+    } else {
+      [self retrieveUploadChunkGranularityFromResponseHeaders:responseHeaders];
+      [self uploadNextChunkWithOffset:offset];
+    }
+  } else {
+    // Handle query error
+    [self chunkFetcher:queryFetcher finishedWithData:data error:error];
+  }
+}
+
+- (void)sendCancelUploadWithFetcherProperties:(NSDictionary *)props {
+  @synchronized(self) {
+    _isCancelInFlight = YES;
+  }
+  GTMSessionFetcher *cancelFetcher = [self uploadFetcherWithProperties:props isQueryFetch:YES];
+  cancelFetcher.bodyData = [NSData data];
+
+  NSString *originalComment = self.comment;
+  [cancelFetcher
+      setCommentWithFormat:@"%@ (cancel)", originalComment ? originalComment : @"upload"];
+
+  [cancelFetcher setRequestValue:@"cancel" forHTTPHeaderField:kGTMSessionHeaderXGoogUploadCommand];
+
+  self.fetcherInFlight = cancelFetcher;
+  [cancelFetcher beginFetchWithCompletionHandler:^(NSData *data, NSError *error) {
+    self.fetcherInFlight = nil;
+    if (![self triggerCancellationHandlerForFetch:cancelFetcher data:data error:error]) {
+      if (error) {
+        GTMSESSION_LOG_DEBUG(@"cancelFetcher %@", error);
+      }
+    }
+    @synchronized(self) {
+      self->_isCancelInFlight = NO;
+    }
+  }];
+}
+
+- (void)uploadNextChunkWithOffset:(int64_t)offset fetcherProperties:(NSDictionary *)props {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Example chunk headers:
+  //  X-Goog-Upload-Command: upload, finalize
+  //  X-Goog-Upload-Offset: 0
+  //  Content-Length: 2000000
+  //  Content-Type: image/jpeg
+  //
+  //  {bytes 0-1999999}
+
+  // The chunk upload URL requires no authentication header.
+  GTMSessionFetcher *chunkFetcher = [self uploadFetcherWithProperties:props isQueryFetch:NO];
+  [self attachSendProgressBlockToChunkFetcher:chunkFetcher];
+  int64_t chunkSize = [self updateChunkFetcher:chunkFetcher forChunkAtOffset:offset];
+  BOOL isUploadingFileURL = (self.uploadFileURL != nil);
+  int64_t fullUploadLength = [self fullUploadLength];
+
+  // The chunk size may have changed, so determine again if we're uploading the full file.
+  BOOL isUploadingFullFile =
+      (offset == 0 && fullUploadLength != kGTMSessionUploadFetcherUnknownFileSize &&
+       chunkSize >= fullUploadLength);
+  if (isUploadingFullFile && isUploadingFileURL) {
+    // The data is the full upload file URL.
+    chunkFetcher.bodyFileURL = self.uploadFileURL;
+    [self beginChunkFetcher:chunkFetcher offset:offset];
+  } else {
+    // Make an NSData for the subset for this upload chunk.
+    self.subdataGenerating = YES;
+    [self generateChunkSubdataWithOffset:offset
+                                  length:chunkSize
+                                response:^(NSData *chunkData, int64_t uploadFileLength,
+                                           NSError *chunkError) {
+                                  // The subdata methods may leave us on a background thread.
+                                  dispatch_async(dispatch_get_main_queue(), ^{
+                                    self.subdataGenerating = NO;
+
+                                    // dont allow the updating of fileLength for uploads not using a
+                                    // data provider as they should know the file length before the
+                                    // upload starts.
+                                    if (self->_uploadDataProvider != nil && uploadFileLength > 0) {
+                                      [self setUploadFileLength:uploadFileLength];
+                                      // Update the command and content-length headers if this is
+                                      // the last chunk to be sent.
+                                      if (offset + chunkSize >= uploadFileLength) {
+                                        int64_t updatedChunkSize =
+                                            [self updateChunkFetcher:chunkFetcher
+                                                    forChunkAtOffset:offset];
+                                        if (updatedChunkSize == 0) {
+                                          // Calling beginChunkFetcher early when there is no more
+                                          // data to send allows us to properly handle nil chunkData
+                                          // below without having to account for the case where we
+                                          // are just finalizing the file.
+                                          chunkFetcher.bodyData = [[NSData alloc] init];
+                                          [self beginChunkFetcher:chunkFetcher offset:offset];
+                                          return;
+                                        }
+                                      }
+                                    }
+
+                                    if (chunkData == nil) {
+                                      NSError *responseError = chunkError;
+                                      if (!responseError) {
+                                        responseError =
+                                            [self uploadChunkUnavailableErrorWithDescription:
+                                                      @"chunkData is nil"];
+                                      }
+                                      [self invokeFinalCallbackWithData:nil
+                                                                  error:responseError
+                                               shouldInvalidateLocation:YES];
+                                      return;
+                                    }
+
+                                    BOOL didWriteFile = NO;
+                                    if (isUploadingFileURL) {
+                                      // Make a temporary file with the data subset.
+                                      NSString *tempName =
+                                          [NSString stringWithFormat:@"GTMUpload_temp_%@",
+                                                                     [[NSUUID UUID] UUIDString]];
+                                      NSString *tempPath = [NSTemporaryDirectory()
+                                          stringByAppendingPathComponent:tempName];
+                                      NSError *writeError;
+                                      didWriteFile = [chunkData writeToFile:tempPath
+                                                                    options:NSDataWritingAtomic
+                                                                      error:&writeError];
+                                      if (didWriteFile) {
+                                        chunkFetcher.bodyFileURL = [NSURL fileURLWithPath:tempPath];
+                                      } else {
+                                        GTMSESSION_LOG_DEBUG(@"writeToFile failed: %@\n%@",
+                                                             writeError, tempPath);
+                                      }
+                                    }
+                                    if (!didWriteFile) {
+                                      chunkFetcher.bodyData = [chunkData copy];
+                                    }
+                                    [self beginChunkFetcher:chunkFetcher offset:offset];
+                                  });
+                                }];
+  }
+}
+
+- (void)beginChunkFetcher:(GTMSessionFetcher *)chunkFetcher offset:(int64_t)offset {
+  // Track the current offset for progress reporting
+  self.currentOffset = offset;
+
+  // Hang on to the fetcher in case we need to cancel it.  We set these before beginning the
+  // chunk fetch so the observers notified of chunk fetches can inspect the upload fetcher to
+  // match to the chunk.
+  self.chunkFetcher = chunkFetcher;
+  self.fetcherInFlight = chunkFetcher;
+
+  // Update the last chunk request, including any request headers.
+  self.lastChunkRequest = chunkFetcher.request;
+
+  [chunkFetcher beginFetchWithDelegate:self
+                     didFinishSelector:@selector(chunkFetcher:finishedWithData:error:)];
+}
+
+- (void)attachSendProgressBlockToChunkFetcher:(GTMSessionFetcher *)chunkFetcher {
+  chunkFetcher.sendProgressBlock =
+      ^(int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
+        // The total bytes expected include the initial body and the full chunked
+        // data, independent of how big this fetcher's chunk is.
+        int64_t initialBodySent = [self bodyLength];  // TODO(grobbins) use [self initialBodySent]
+        int64_t totalSent = initialBodySent + self.currentOffset + totalBytesSent;
+        int64_t totalExpected = initialBodySent + [self fullUploadLength];
+
+        [self invokeDelegateWithDidSendBytes:bytesSent
+                              totalBytesSent:totalSent
+                    totalBytesExpectedToSend:totalExpected];
+      };
+}
+
+- (NSDictionary *)uploadSessionIdentifierMetadata {
+  NSMutableDictionary *metadata = [NSMutableDictionary dictionary];
+  metadata[kGTMSessionIdentifierIsUploadChunkFetcherMetadataKey] = @YES;
+  GTMSESSION_ASSERT_DEBUG(self.uploadFileURL,
+                          @"Invalid upload fetcher to create session identifier for metadata");
+  metadata[kGTMSessionIdentifierUploadFileURLMetadataKey] = [self.uploadFileURL absoluteString];
+  metadata[kGTMSessionIdentifierUploadFileLengthMetadataKey] = @([self fullUploadLength]);
+
+  if (self.uploadLocationURL) {
+    metadata[kGTMSessionIdentifierUploadLocationURLMetadataKey] =
+        [self.uploadLocationURL absoluteString];
+  }
+  if (self.uploadMIMEType) {
+    metadata[kGTMSessionIdentifierUploadMIMETypeMetadataKey] = self.uploadMIMEType;
+  }
+  metadata[kGTMSessionIdentifierUploadChunkSizeMetadataKey] = @(self.chunkSize);
+  metadata[kGTMSessionIdentifierUploadCurrentOffsetMetadataKey] = @(self.currentOffset);
+  metadata[kGTMSessionIdentifierUploadAllowsCellularAccess] = @(self.request.allowsCellularAccess);
+
+  return metadata;
+}
+
+- (GTMSessionFetcher *)uploadFetcherWithProperties:(NSDictionary *)properties
+                                      isQueryFetch:(BOOL)isQueryFetch {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Common code to make a request for a query command or for a chunk upload.
+  NSURL *uploadLocationURL = self.uploadLocationURL;
+  NSMutableURLRequest *chunkRequest = [NSMutableURLRequest requestWithURL:uploadLocationURL];
+  [chunkRequest setHTTPMethod:@"PUT"];
+
+  // copy the user-agent from the original connection
+  // n.b. that self.request is nil for upload fetchers created with an existing upload location
+  // URL.
+  NSURLRequest *origRequest = self.request;
+
+  chunkRequest.allowsCellularAccess = origRequest.allowsCellularAccess;
+  if (!origRequest) {
+    chunkRequest.allowsCellularAccess = _allowsCellularAccess;
+  }
+  NSString *userAgent = [origRequest valueForHTTPHeaderField:@"User-Agent"];
+  if (userAgent.length > 0) {
+    [chunkRequest setValue:userAgent forHTTPHeaderField:@"User-Agent"];
+  }
+
+  [chunkRequest setValue:kGTMSessionXGoogUploadProtocolResumable
+      forHTTPHeaderField:kGTMSessionHeaderXGoogUploadProtocol];
+
+  // To avoid timeouts when debugging, copy the timeout of the initial fetcher.
+  NSTimeInterval origTimeout = [origRequest timeoutInterval];
+  [chunkRequest setTimeoutInterval:origTimeout];
+
+  //
+  // Make a new chunk fetcher.
+  //
+  GTMSessionFetcher *chunkFetcher = [GTMSessionFetcher fetcherWithRequest:chunkRequest];
+  chunkFetcher.callbackQueue = self.callbackQueue;
+  chunkFetcher.sessionUserInfo = self.sessionUserInfo;
+  chunkFetcher.configurationBlock = self.configurationBlock;
+  chunkFetcher.allowedInsecureSchemes = self.allowedInsecureSchemes;
+  chunkFetcher.allowLocalhostRequest = self.allowLocalhostRequest;
+  chunkFetcher.allowInvalidServerCertificates = self.allowInvalidServerCertificates;
+  chunkFetcher.useUploadTask = !isQueryFetch;
+
+  if (self.uploadFileURL && !isQueryFetch && self.useBackgroundSession) {
+    [chunkFetcher createSessionIdentifierWithMetadata:[self uploadSessionIdentifierMetadata]];
+  }
+
+  // Give the chunk fetcher the same properties as the previous chunk fetcher
+  chunkFetcher.properties = [properties mutableCopy];
+  [chunkFetcher setProperty:[NSValue valueWithNonretainedObject:self]
+                     forKey:kGTMSessionUploadFetcherChunkParentKey];
+
+  // copy other fetcher settings to the new fetcher
+  chunkFetcher.retryEnabled = self.retryEnabled;
+  chunkFetcher.maxRetryInterval = self.maxRetryInterval;
+
+  if ([self isRetryEnabled]) {
+    // We interpose our own retry method both so we can change the request to ask the server to
+    // tell us where to resume the chunk.
+    chunkFetcher.retryBlock =
+        ^(BOOL suggestedWillRetry, NSError *chunkError, GTMSessionFetcherRetryResponse response) {
+          void (^finish)(BOOL) = ^(BOOL shouldRetry) {
+            // We'll retry by sending an offset query.
+            if (shouldRetry) {
+              self.shouldInitiateOffsetQuery = !isQueryFetch;
+
+              // We don't know what our actual offset is anymore, but the server will tell us.
+              self.currentOffset = 0;
+            }
+            // We don't actually want to retry this specific fetcher.
+            response(NO);
+          };
+
+          GTMSessionFetcherRetryBlock retryBlock = self.retryBlock;
+          if (retryBlock) {
+            // Ask the client, then call the finish block above.
+            retryBlock(suggestedWillRetry, chunkError, finish);
+          } else {
+            finish(suggestedWillRetry);
+          }
+        };
+  }
+
+  return chunkFetcher;
+}
+
+- (void)chunkFetcher:(GTMSessionFetcher *)chunkFetcher
+    finishedWithData:(NSData *)data
+               error:(NSError *)error {
+  BOOL hasDestroyedOldChunkFetcher = NO;
+  self.fetcherInFlight = nil;
+
+  NSDictionary *responseHeaders = [chunkFetcher responseHeaders];
+  GTMSessionUploadFetcherStatus uploadStatus =
+      [[self class] uploadStatusFromResponseHeaders:responseHeaders];
+  GTMSESSION_ASSERT_DEBUG(
+      uploadStatus != kStatusUnknown || error != nil || self.wasCreatedFromBackgroundSession,
+      @"chunk fetcher completion has kStatusUnknown upload status for headers %@ fetcher %@",
+      responseHeaders, self);
+  BOOL isUploadStatusStopped = (uploadStatus == kStatusFinal || uploadStatus == kStatusCancelled);
+
+  // Check if the fetcher was actually querying. If it failed, do not retry,
+  // as it would enter an infinite retry loop.
+  NSString *uploadCommand =
+      chunkFetcher.request.allHTTPHeaderFields[kGTMSessionHeaderXGoogUploadCommand];
+  BOOL isQueryFetch = [uploadCommand isEqual:@"query"];
+
+  // TODO
+  // Maybe here we can check to see if the request had x goog content length set. (the file length
+  // one).
+  NSString *previousContentLengthValue =
+      [chunkFetcher.request valueForHTTPHeaderField:@"Content-Length"];
+  // The Content-Length header may not be present if the chunk fetcher was recreated from
+  // a background session.
+  BOOL hasKnownChunkSize = (previousContentLengthValue != nil);
+  int64_t previousContentLength = [previousContentLengthValue longLongValue];
+
+  BOOL needsQuery = (!hasKnownChunkSize && !isUploadStatusStopped);
+
+  if (error || (needsQuery && !isQueryFetch)) {
+    NSInteger status = error.code;
+
+    // Status 4xx indicates a bad offset in the Google upload protocol. However, do not retry status
+    // 404 per spec, nor if the upload size appears to have been zero (since the server will just
+    // keep asking us to retry.)
+    if (self.shouldInitiateOffsetQuery || (needsQuery && !isQueryFetch) ||
+        ([error.domain isEqual:kGTMSessionFetcherStatusDomain] && status >= 400 && status <= 499 &&
+         status != 404 && uploadStatus == kStatusActive && previousContentLength > 0)) {
+      self.shouldInitiateOffsetQuery = NO;
+      [self destroyChunkFetcher];
+      hasDestroyedOldChunkFetcher = YES;
+      [self sendQueryForUploadOffsetWithFetcherProperties:chunkFetcher.properties];
+    } else {
+      // Some unexpected status has occurred; handle it as we would a regular
+      // object fetcher failure.
+      [self invokeFinalCallbackWithData:data error:error shouldInvalidateLocation:NO];
+    }
+  } else {
+    // The chunk has uploaded successfully.
+    int64_t newOffset = self.currentOffset + previousContentLength;
+#if DEBUG
+    // Verify that if we think all of the uploading data has been sent, the server responded with
+    // the "final" upload status.
+    BOOL hasUploadAllData = (newOffset == [self fullUploadLength]);
+    BOOL isFinalStatus = (uploadStatus == kStatusFinal);
+#pragma unused(hasUploadAllData, isFinalStatus)
+    GTMSESSION_ASSERT_DEBUG(hasUploadAllData == isFinalStatus || !hasKnownChunkSize,
+                            @"uploadStatus:%@  newOffset:%lld (%lld + %lld)  fullUploadLength:%lld"
+                            @" chunkFetcher:%@ requestHeaders:%@ responseHeaders:%@",
+                            [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadStatus],
+                            newOffset, self.currentOffset, previousContentLength,
+                            [self fullUploadLength], chunkFetcher,
+                            chunkFetcher.request.allHTTPHeaderFields, responseHeaders);
+#endif
+    if (isUploadStatusStopped || (!_uploadData && _uploadFileLength == 0) ||
+        (_currentOffset > _uploadFileLength && _uploadFileLength > 0)) {
+      // This was the last chunk.
+      if (error == nil && uploadStatus == kStatusCancelled) {
+        // Report cancelled status as an error.
+        NSDictionary *userInfo = nil;
+        if (data.length > 0) {
+          userInfo = @{kGTMSessionFetcherStatusDataKey : data};
+        }
+        data = nil;
+        error = [self prematureFailureErrorWithUserInfo:userInfo];
+      } else {
+        // The upload is in final status.
+        //
+        // Take the chunk fetcher's data as the superclass data.
+        self.downloadedData = data;
+        self.statusCode = chunkFetcher.statusCode;
+      }
+
+      // we're done
+      [self invokeFinalCallbackWithData:data error:error shouldInvalidateLocation:YES];
+    } else {
+      // Start the next chunk.
+      self.currentOffset = newOffset;
+
+      // We want to destroy this chunk fetcher before creating the next one, but
+      // we want to pass on its properties
+      NSDictionary *props = [chunkFetcher properties];
+
+      // We no longer need to be able to cancel this chunkFetcher.  Destroy it
+      // before we create a new chunk fetcher.
+      [self destroyChunkFetcher];
+      hasDestroyedOldChunkFetcher = YES;
+
+      [self uploadNextChunkWithOffset:newOffset fetcherProperties:props];
+    }
+  }
+  if (!hasDestroyedOldChunkFetcher) {
+    [self destroyChunkFetcher];
+  }
+}
+
+- (void)destroyChunkFetcher {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_fetcherInFlight == _chunkFetcher) {
+      _fetcherInFlight = nil;
+    }
+
+    [_chunkFetcher stopFetching];
+
+    NSURL *chunkFileURL = _chunkFetcher.bodyFileURL;
+    BOOL wasTemporaryUploadFile = ![chunkFileURL isEqual:_uploadFileURL];
+    if (wasTemporaryUploadFile) {
+      NSError *error;
+      [[NSFileManager defaultManager] removeItemAtURL:chunkFileURL error:&error];
+      if (error) {
+        GTMSESSION_LOG_DEBUG(@"removingItemAtURL failed: %@\n%@", error, chunkFileURL);
+      }
+    }
+
+    _recentChunkReponseHeaders = _chunkFetcher.responseHeaders;
+
+    // To avoid retain cycles, remove all properties except the parent identifier.
+    _chunkFetcher.properties =
+        @{kGTMSessionUploadFetcherChunkParentKey : [NSValue valueWithNonretainedObject:self]};
+
+    _chunkFetcher.retryBlock = nil;
+    _chunkFetcher.sendProgressBlock = nil;
+    _chunkFetcher = nil;
+  }  // @synchronized(self)
+}
+
+// This method calculates the proper values to pass to the client's send progress block.
+//
+// The actual total bytes sent include the initial body sent, plus the
+// offset into the batched data prior to the current chunk fetcher
+
+- (void)invokeDelegateWithDidSendBytes:(int64_t)bytesSent
+                        totalBytesSent:(int64_t)totalBytesSent
+              totalBytesExpectedToSend:(int64_t)totalBytesExpected {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Ensure the chunk fetcher survives the callback in case the user pauses the upload process.
+  __block GTMSessionFetcher *holdFetcher = self.chunkFetcher;
+
+  [self invokeOnCallbackQueue:self.delegateCallbackQueue
+             afterUserStopped:NO
+                        block:^{
+                          GTMSessionFetcherSendProgressBlock sendProgressBlock =
+                              self.sendProgressBlock;
+                          if (sendProgressBlock) {
+                            sendProgressBlock(bytesSent, totalBytesSent, totalBytesExpected);
+                          }
+                          holdFetcher = nil;
+                        }];
+}
+
+- (void)retrieveUploadChunkGranularityFromResponseHeaders:(NSDictionary *)responseHeaders {
+  GTMSessionCheckNotSynchronized(self);
+
+  // Standard granularity for Google uploads is 256K.
+  NSString *chunkGranularityHeader =
+      [responseHeaders objectForKey:kGTMSessionHeaderXGoogUploadChunkGranularity];
+  self.uploadGranularity = chunkGranularityHeader.longLongValue;
+}
+
+#pragma mark -
+
+- (BOOL)isPaused {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _isPaused;
+  }  // @synchronized(self)
+}
+
+- (void)pauseFetching {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _isPaused = YES;
+  }  // @synchronized(self)
+
+  // Pausing just means stopping the current chunk from uploading;
+  // when we resume, we will send a query request to the server to
+  // figure out what bytes to resume sending.
+  //
+  // We won't try to cancel the initial data upload, but rather will check
+  // for being paused in beginChunkFetches.
+  [self destroyChunkFetcher];
+}
+
+- (void)resumeFetching {
+  BOOL wasPaused;
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    wasPaused = _isPaused;
+    _isPaused = NO;
+  }  // @synchronized(self)
+
+  if (wasPaused) {
+    [self sendQueryForUploadOffsetWithFetcherProperties:self.properties];
+  }
+}
+
+- (void)stopFetching {
+  // Overrides the superclass
+  [self destroyChunkFetcher];
+
+  // If we think the server is waiting for more data, then tell it there won't be more.
+  if (self.uploadLocationURL) {
+    [self sendCancelUploadWithFetcherProperties:[self properties]];
+    self.uploadLocationURL = nil;
+  } else {
+    [self invokeOnCallbackQueue:self.callbackQueue
+               afterUserStopped:YES
+                          block:^{
+                            // Repeated calls to stopFetching may cause this path to be reached
+                            // despite having sent a real cancel request, check here to ensure that
+                            // the cancellation handler invocation which fires will definitely be
+                            // for the real request sent previously.
+                            @synchronized(self) {
+                              if (self->_isCancelInFlight) {
+                                return;
+                              }
+                            }
+                            [self triggerCancellationHandlerForFetch:nil data:nil error:nil];
+                          }];
+  }
+
+  [super stopFetching];
+}
+
+// Fires the cancellation handler, returning whether there was a handler to be fired.
+- (BOOL)triggerCancellationHandlerForFetch:(GTMSessionFetcher *)fetcher
+                                      data:(NSData *)data
+                                     error:(NSError *)error {
+  GTMSessionUploadFetcherCancellationHandler handler = self.cancellationHandler;
+  if (handler) {
+    handler(fetcher, data, error);
+    self.cancellationHandler = nil;
+    return YES;
+  }
+  return NO;
+}
+
+#pragma mark -
+
+- (int64_t)updateChunkFetcher:(GTMSessionFetcher *)chunkFetcher forChunkAtOffset:(int64_t)offset {
+  BOOL isUploadingFileURL = (self.uploadFileURL != nil);
+
+  // Upload another chunk, meeting server-required granularity.
+  int64_t chunkSize = self.chunkSize;
+
+  int64_t fullUploadLength = [self fullUploadLength];
+  BOOL isFileLengthKnown = fullUploadLength >= 0;
+
+  BOOL isUploadingFullFile = (offset == 0 && isFileLengthKnown && chunkSize >= fullUploadLength);
+  if (!isUploadingFileURL || !isUploadingFullFile) {
+    // We're not uploading the entire file and given the file URL.  Since we'll be
+    // allocating a subdata block for a chunk, we need to bound it to something that
+    // won't blow the process's memory.
+    if (chunkSize > kGTMSessionUploadFetcherMaximumDemandBufferSize) {
+      chunkSize = kGTMSessionUploadFetcherMaximumDemandBufferSize;
+    }
+  }
+
+  int64_t granularity = self.uploadGranularity;
+  if (granularity > 0) {
+    if (chunkSize < granularity) {
+      chunkSize = granularity;
+    } else {
+      chunkSize = chunkSize - (chunkSize % granularity);
+    }
+  }
+
+  GTMSESSION_ASSERT_DEBUG(offset < fullUploadLength || fullUploadLength == 0,
+                          @"offset %lld exceeds data length %lld", offset, fullUploadLength);
+
+  if (granularity > 0) {
+    offset = offset - (offset % granularity);
+  }
+
+  // If the chunk size is bigger than the remaining data, or else
+  // it's close enough in size to the remaining data that we'd rather
+  // avoid having a whole extra http fetch for the leftover bit, then make
+  // this chunk size exactly match the remaining data size
+  NSString *command;
+  int64_t thisChunkSize = chunkSize;
+
+  BOOL isChunkTooBig = (thisChunkSize >= (fullUploadLength - offset));
+  BOOL isChunkAlmostBigEnough = (fullUploadLength - offset - 2500 < thisChunkSize);
+  BOOL isFinalChunk = (isChunkTooBig || isChunkAlmostBigEnough) && isFileLengthKnown;
+  if (isFinalChunk) {
+    thisChunkSize = fullUploadLength - offset;
+    if (thisChunkSize > 0) {
+      command = @"upload, finalize";
+    } else {
+      command = @"finalize";
+    }
+  } else {
+    command = @"upload";
+  }
+  NSString *lengthStr = @(thisChunkSize).stringValue;
+  NSString *offsetStr = @(offset).stringValue;
+
+  [chunkFetcher setRequestValue:command forHTTPHeaderField:kGTMSessionHeaderXGoogUploadCommand];
+  [chunkFetcher setRequestValue:lengthStr forHTTPHeaderField:@"Content-Length"];
+  [chunkFetcher setRequestValue:offsetStr forHTTPHeaderField:kGTMSessionHeaderXGoogUploadOffset];
+  if (_uploadFileLength != kGTMSessionUploadFetcherUnknownFileSize) {
+    [chunkFetcher setRequestValue:@([self fullUploadLength]).stringValue
+               forHTTPHeaderField:kGTMSessionHeaderXGoogUploadContentLength];
+  }
+
+  // Append the range of bytes in this chunk to the fetcher comment.
+  NSString *baseComment = self.comment;
+  [chunkFetcher setCommentWithFormat:@"%@ (%lld-%lld)", baseComment ? baseComment : @"upload",
+                                     offset, MAX(0, offset + thisChunkSize - 1)];
+
+  return thisChunkSize;
+}
+
+// Public properties.
+// clang-format off
+@synthesize currentOffset = _currentOffset,
+            allowsCellularAccess = _allowsCellularAccess,
+            delegateCompletionHandler = _delegateCompletionHandler,
+            chunkFetcher = _chunkFetcher,
+            lastChunkRequest = _lastChunkRequest,
+            subdataGenerating = _subdataGenerating,
+            shouldInitiateOffsetQuery = _shouldInitiateOffsetQuery,
+            uploadGranularity = _uploadGranularity;
+// clang-format on
+
+// Internal properties.
+@dynamic fetcherInFlight;
+@dynamic activeFetcher;
+@dynamic statusCode;
+@dynamic delegateCallbackQueue;
+
++ (void)removePointer:(void *)pointer fromPointerArray:(NSPointerArray *)pointerArray {
+  for (NSUInteger index = 0, count = pointerArray.count; index < count; ++index) {
+    void *pointerAtIndex = [pointerArray pointerAtIndex:index];
+    if (pointerAtIndex == pointer) {
+      [pointerArray removePointerAtIndex:index];
+      return;
+    }
+  }
+}
+
+- (BOOL)useBackgroundSession {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _useBackgroundSessionOnChunkFetchers;
+  }  // @synchronized(self
+}
+
+- (void)setUseBackgroundSession:(BOOL)useBackgroundSession {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_useBackgroundSessionOnChunkFetchers != useBackgroundSession) {
+      _useBackgroundSessionOnChunkFetchers = useBackgroundSession;
+      NSPointerArray *uploadFetcherPointerArrayForBackgroundSessions =
+          [[self class] uploadFetcherPointerArrayForBackgroundSessions];
+      @synchronized(uploadFetcherPointerArrayForBackgroundSessions) {
+        if (_useBackgroundSessionOnChunkFetchers) {
+          [uploadFetcherPointerArrayForBackgroundSessions addPointer:(__bridge void *)self];
+        } else {
+          [[self class] removePointer:(__bridge void *)self
+                     fromPointerArray:uploadFetcherPointerArrayForBackgroundSessions];
+        }
+      }  // @synchronized(uploadFetcherPointerArrayForBackgroundSessions)
+    }
+  }  // @synchronized(self)
+}
+
+- (BOOL)canFetchWithBackgroundSession {
+  // The initial upload fetcher is always a foreground session; the
+  // useBackgroundSession property will apply only to chunk fetchers,
+  // not to queries.
+  return NO;
+}
+
+- (NSDictionary *)responseHeaders {
+  GTMSessionCheckNotSynchronized(self);
+  // Overrides the superclass
+
+  // If asked for the fetcher's response, use the most recent chunk fetcher's response,
+  // since the original request's response lacks useful information like the actual
+  // Content-Type.
+  NSDictionary *dict = self.chunkFetcher.responseHeaders;
+  if (dict) {
+    return dict;
+  }
+
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    if (_recentChunkReponseHeaders) {
+      return _recentChunkReponseHeaders;
+    }
+  }  // @synchronized(self
+
+  // No chunk fetcher yet completed, so return whatever we have from the initial fetch.
+  return [super responseHeaders];
+}
+
+- (NSInteger)statusCodeUnsynchronized {
+  GTMSessionCheckSynchronized(self);
+
+  if (_recentChunkStatusCode != -1) {
+    // Overrides the superclass to indicate status appropriate to the initial
+    // or latest chunk fetch
+    return _recentChunkStatusCode;
+  } else {
+    return [super statusCodeUnsynchronized];
+  }
+}
+
+- (void)setStatusCode:(NSInteger)val {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _recentChunkStatusCode = val;
+  }
+}
+
+- (int64_t)initialBodyLength {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _initialBodyLength;
+  }
+}
+
+- (void)setInitialBodyLength:(int64_t)length {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _initialBodyLength = length;
+  }
+}
+
+- (int64_t)initialBodySent {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _initialBodySent;
+  }
+}
+
+- (void)setInitialBodySent:(int64_t)length {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _initialBodySent = length;
+  }
+}
+
+- (NSURL *)uploadLocationURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    return _uploadLocationURL;
+  }
+}
+
+- (void)setUploadLocationURL:(NSURL *)locationURL {
+  @synchronized(self) {
+    GTMSessionMonitorSynchronized(self);
+
+    _uploadLocationURL = locationURL;
+  }
+}
+
+- (GTMSessionFetcher *)activeFetcher {
+  GTMSessionFetcher *result = self.fetcherInFlight;
+  if (result) return result;
+
+  return self;
+}
+
+- (BOOL)isFetching {
+  // If there is an active chunk fetcher, then the upload fetcher is considered
+  // to still be fetching.
+  if (self.fetcherInFlight != nil) return YES;
+
+  return [super isFetching];
+}
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
+- (BOOL)waitForCompletionWithTimeout:(NSTimeInterval)timeoutInSeconds {
+  NSDate *timeoutDate = [NSDate dateWithTimeIntervalSinceNow:timeoutInSeconds];
+
+  while (self.fetcherInFlight || self.subdataGenerating) {
+    if ([timeoutDate timeIntervalSinceNow] < 0) return NO;
+
+    if (self.subdataGenerating) {
+      // Allow time for subdata generation.
+      NSDate *stopDate = [NSDate dateWithTimeIntervalSinceNow:0.001];
+      [[NSRunLoop currentRunLoop] runUntilDate:stopDate];
+    } else {
+      // Wait for any chunk or query fetchers that still have pending callbacks or
+      // notifications.
+      BOOL timedOut;
+
+      if (self.fetcherInFlight == self) {
+        timedOut = ![super waitForCompletionWithTimeout:timeoutInSeconds];
+      } else {
+        timedOut = ![self.fetcherInFlight waitForCompletionWithTimeout:timeoutInSeconds];
+      }
+      if (timedOut) return NO;
+    }
+  }
+  return YES;
+}
+#pragma clang diagnostic pop
+
+@end
+
+@implementation GTMSessionFetcher (GTMSessionUploadFetcherMethods)
+
+- (GTMSessionUploadFetcher *)parentUploadFetcher {
+  NSValue *property = [self propertyForKey:kGTMSessionUploadFetcherChunkParentKey];
+  if (!property) return nil;
+
+  GTMSessionUploadFetcher *uploadFetcher = property.nonretainedObjectValue;
+
+  GTMSESSION_ASSERT_DEBUG([uploadFetcher isKindOfClass:[GTMSessionUploadFetcher class]],
+                          @"Unexpected parent upload fetcher class: %@", [uploadFetcher class]);
+  return uploadFetcher;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTCompressionHelper.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTCompressionHelper.m
new file mode 100644
index 0000000..11d849e
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTCompressionHelper.m	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTCompressionHelper.h"
+
+#import <zlib.h>
+
+@implementation GDTCCTCompressionHelper
+
++ (nullable NSData *)gzippedData:(NSData *)data {
+#if defined(__LP64__) && __LP64__
+  // Don't support > 32bit length for 64 bit, see note in header.
+  if (data.length > UINT_MAX) {
+    return nil;
+  }
+#endif
+
+  enum { kChunkSize = 1024 };
+
+  const void *bytes = [data bytes];
+  NSUInteger length = [data length];
+
+  int level = Z_DEFAULT_COMPRESSION;
+  if (!bytes || !length) {
+    return nil;
+  }
+
+  z_stream strm;
+  bzero(&strm, sizeof(z_stream));
+
+  int memLevel = 8;          // Default.
+  int windowBits = 15 + 16;  // Enable gzip header instead of zlib header.
+
+  int retCode;
+  if (deflateInit2(&strm, level, Z_DEFLATED, windowBits, memLevel, Z_DEFAULT_STRATEGY) != Z_OK) {
+    return nil;
+  }
+
+  // Hint the size at 1/4 the input size.
+  NSMutableData *result = [NSMutableData dataWithCapacity:(length / 4)];
+  unsigned char output[kChunkSize];
+
+  // Setup the input.
+  strm.avail_in = (unsigned int)length;
+  strm.next_in = (unsigned char *)bytes;
+
+  // Collect the data.
+  do {
+    // update what we're passing in
+    strm.avail_out = kChunkSize;
+    strm.next_out = output;
+    retCode = deflate(&strm, Z_FINISH);
+    if ((retCode != Z_OK) && (retCode != Z_STREAM_END)) {
+      deflateEnd(&strm);
+      return nil;
+    }
+    // Collect what we got.
+    unsigned gotBack = kChunkSize - strm.avail_out;
+    if (gotBack > 0) {
+      [result appendBytes:output length:gotBack];
+    }
+
+  } while (retCode == Z_OK);
+
+  // If the loop exits, it used all input and the stream ended.
+  NSAssert(strm.avail_in == 0,
+           @"Should have finished deflating without using all input, %u bytes left", strm.avail_in);
+  NSAssert(retCode == Z_STREAM_END,
+           @"thought we finished deflate w/o getting a result of stream end, code %d", retCode);
+
+  // Clean up.
+  deflateEnd(&strm);
+
+  return result;
+}
+
++ (BOOL)isGzipped:(NSData *)data {
+  const UInt8 *bytes = (const UInt8 *)data.bytes;
+  return (data.length >= 2 && bytes[0] == 0x1f && bytes[1] == 0x8b);
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTNanopbHelpers.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTNanopbHelpers.m
new file mode 100644
index 0000000..ece3bae
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTNanopbHelpers.m	
@@ -0,0 +1,270 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h"
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_OSX
+#import <AppKit/AppKit.h>
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import <nanopb/pb.h>
+#import <nanopb/pb_decode.h>
+#import <nanopb/pb_encode.h>
+
+#import "GoogleDataTransport/GDTCCTLibrary/Public/GDTCOREvent+GDTCCTSupport.h"
+
+#pragma mark - General purpose encoders
+
+pb_bytes_array_t *GDTCCTEncodeString(NSString *string) {
+  NSData *stringBytes = [string dataUsingEncoding:NSUTF8StringEncoding];
+  return GDTCCTEncodeData(stringBytes);
+}
+
+pb_bytes_array_t *GDTCCTEncodeData(NSData *data) {
+  pb_bytes_array_t *pbBytesArray = calloc(1, PB_BYTES_ARRAY_T_ALLOCSIZE(data.length));
+  if (pbBytesArray != NULL) {
+    [data getBytes:pbBytesArray->bytes length:data.length];
+    pbBytesArray->size = (pb_size_t)data.length;
+  }
+  return pbBytesArray;
+}
+
+#pragma mark - CCT object constructors
+
+NSData *_Nullable GDTCCTEncodeBatchedLogRequest(gdt_cct_BatchedLogRequest *batchedLogRequest) {
+  pb_ostream_t sizestream = PB_OSTREAM_SIZING;
+  // Encode 1 time to determine the size.
+  if (!pb_encode(&sizestream, gdt_cct_BatchedLogRequest_fields, batchedLogRequest)) {
+    GDTCORLogError(GDTCORMCEGeneralError, @"Error in nanopb encoding for size: %s",
+                   PB_GET_ERROR(&sizestream));
+  }
+
+  // Encode a 2nd time to actually get the bytes from it.
+  size_t bufferSize = sizestream.bytes_written;
+  CFMutableDataRef dataRef = CFDataCreateMutable(CFAllocatorGetDefault(), bufferSize);
+  CFDataSetLength(dataRef, bufferSize);
+  pb_ostream_t ostream = pb_ostream_from_buffer((void *)CFDataGetBytePtr(dataRef), bufferSize);
+  if (!pb_encode(&ostream, gdt_cct_BatchedLogRequest_fields, batchedLogRequest)) {
+    GDTCORLogError(GDTCORMCEGeneralError, @"Error in nanopb encoding for bytes: %s",
+                   PB_GET_ERROR(&ostream));
+  }
+
+  return CFBridgingRelease(dataRef);
+}
+
+gdt_cct_BatchedLogRequest GDTCCTConstructBatchedLogRequest(
+    NSDictionary<NSString *, NSSet<GDTCOREvent *> *> *logMappingIDToLogSet) {
+  gdt_cct_BatchedLogRequest batchedLogRequest = gdt_cct_BatchedLogRequest_init_default;
+  NSUInteger numberOfLogRequests = logMappingIDToLogSet.count;
+  gdt_cct_LogRequest *logRequests = calloc(numberOfLogRequests, sizeof(gdt_cct_LogRequest));
+  if (logRequests == NULL) {
+    return batchedLogRequest;
+  }
+
+  __block int i = 0;
+  [logMappingIDToLogSet enumerateKeysAndObjectsUsingBlock:^(NSString *_Nonnull logMappingID,
+                                                            NSSet<GDTCOREvent *> *_Nonnull logSet,
+                                                            BOOL *_Nonnull stop) {
+    int32_t logSource = [logMappingID intValue];
+    gdt_cct_LogRequest logRequest = GDTCCTConstructLogRequest(logSource, logSet);
+    logRequests[i] = logRequest;
+    i++;
+  }];
+
+  batchedLogRequest.log_request = logRequests;
+  batchedLogRequest.log_request_count = (pb_size_t)numberOfLogRequests;
+  return batchedLogRequest;
+}
+
+gdt_cct_LogRequest GDTCCTConstructLogRequest(int32_t logSource,
+                                             NSSet<GDTCOREvent *> *_Nonnull logSet) {
+  if (logSet.count == 0) {
+    GDTCORLogError(GDTCORMCEGeneralError, @"%@",
+                   @"An empty event set can't be serialized to proto.");
+    gdt_cct_LogRequest logRequest = gdt_cct_LogRequest_init_default;
+    return logRequest;
+  }
+  gdt_cct_LogRequest logRequest = gdt_cct_LogRequest_init_default;
+  logRequest.log_source = logSource;
+  logRequest.has_log_source = 1;
+  logRequest.client_info = GDTCCTConstructClientInfo();
+  logRequest.has_client_info = 1;
+  logRequest.log_event = calloc(logSet.count, sizeof(gdt_cct_LogEvent));
+  if (logRequest.log_event == NULL) {
+    return logRequest;
+  }
+  int i = 0;
+  for (GDTCOREvent *log in logSet) {
+    gdt_cct_LogEvent logEvent = GDTCCTConstructLogEvent(log);
+    logRequest.log_event[i] = logEvent;
+    i++;
+  }
+  logRequest.log_event_count = (pb_size_t)logSet.count;
+
+  GDTCORClock *currentTime = [GDTCORClock snapshot];
+  logRequest.request_time_ms = currentTime.timeMillis;
+  logRequest.has_request_time_ms = 1;
+  logRequest.request_uptime_ms = [currentTime uptimeMilliseconds];
+  logRequest.has_request_uptime_ms = 1;
+
+  return logRequest;
+}
+
+gdt_cct_LogEvent GDTCCTConstructLogEvent(GDTCOREvent *event) {
+  gdt_cct_LogEvent logEvent = gdt_cct_LogEvent_init_default;
+  logEvent.event_time_ms = event.clockSnapshot.timeMillis;
+  logEvent.has_event_time_ms = 1;
+  logEvent.event_uptime_ms = [event.clockSnapshot uptimeMilliseconds];
+  logEvent.has_event_uptime_ms = 1;
+  logEvent.timezone_offset_seconds = event.clockSnapshot.timezoneOffsetSeconds;
+  logEvent.has_timezone_offset_seconds = 1;
+  if (event.customBytes) {
+    NSData *networkConnectionInfoData = event.networkConnectionInfoData;
+    if (networkConnectionInfoData) {
+      [networkConnectionInfoData getBytes:&logEvent.network_connection_info
+                                   length:networkConnectionInfoData.length];
+      logEvent.has_network_connection_info = 1;
+    }
+    NSNumber *eventCode = event.eventCode;
+    if (eventCode != nil) {
+      logEvent.has_event_code = 1;
+      logEvent.event_code = [eventCode intValue];
+    }
+  }
+  NSError *error;
+  NSData *extensionBytes;
+  extensionBytes = event.serializedDataObjectBytes;
+  if (error) {
+    GDTCORLogWarning(GDTCORMCWFileReadError,
+                     @"There was an error reading extension bytes from disk: %@", error);
+    return logEvent;
+  }
+  logEvent.source_extension = GDTCCTEncodeData(extensionBytes);  // read bytes from the file.
+  return logEvent;
+}
+
+gdt_cct_ClientInfo GDTCCTConstructClientInfo() {
+  gdt_cct_ClientInfo clientInfo = gdt_cct_ClientInfo_init_default;
+  clientInfo.client_type = gdt_cct_ClientInfo_ClientType_IOS_FIREBASE;
+  clientInfo.has_client_type = 1;
+#if TARGET_OS_IOS || TARGET_OS_TV
+  clientInfo.ios_client_info = GDTCCTConstructiOSClientInfo();
+  clientInfo.has_ios_client_info = 1;
+#elif TARGET_OS_OSX
+  // TODO(mikehaney24): Expand the proto to include macOS client info.
+#endif
+  return clientInfo;
+}
+
+gdt_cct_IosClientInfo GDTCCTConstructiOSClientInfo() {
+  gdt_cct_IosClientInfo iOSClientInfo = gdt_cct_IosClientInfo_init_default;
+#if TARGET_OS_IOS || TARGET_OS_TV
+  UIDevice *device = [UIDevice currentDevice];
+  NSBundle *bundle = [NSBundle mainBundle];
+  NSLocale *locale = [NSLocale currentLocale];
+  iOSClientInfo.os_full_version = GDTCCTEncodeString(device.systemVersion);
+  NSArray *versionComponents = [device.systemVersion componentsSeparatedByString:@"."];
+  iOSClientInfo.os_major_version = GDTCCTEncodeString(versionComponents[0]);
+  NSString *version = [bundle objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
+  if (version) {
+    iOSClientInfo.application_build = GDTCCTEncodeString(version);
+  }
+  NSString *countryCode = [locale objectForKey:NSLocaleCountryCode];
+  if (countryCode) {
+    iOSClientInfo.country = GDTCCTEncodeString([locale objectForKey:NSLocaleCountryCode]);
+  }
+  iOSClientInfo.model = GDTCCTEncodeString(GDTCORDeviceModel());
+  NSString *languageCode = bundle.preferredLocalizations.firstObject;
+  iOSClientInfo.language_code =
+      languageCode ? GDTCCTEncodeString(languageCode) : GDTCCTEncodeString(@"en");
+  iOSClientInfo.application_bundle_id = GDTCCTEncodeString(bundle.bundleIdentifier);
+#endif
+  return iOSClientInfo;
+}
+
+NSData *GDTCCTConstructNetworkConnectionInfoData() {
+  gdt_cct_NetworkConnectionInfo networkConnectionInfo = gdt_cct_NetworkConnectionInfo_init_default;
+  NSInteger currentNetworkType = GDTCORNetworkTypeMessage();
+  if (currentNetworkType) {
+    networkConnectionInfo.has_network_type = 1;
+    if (currentNetworkType == GDTCORNetworkTypeMobile) {
+      networkConnectionInfo.network_type = gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE;
+      networkConnectionInfo.mobile_subtype = GDTCCTNetworkConnectionInfoNetworkMobileSubtype();
+      if (networkConnectionInfo.mobile_subtype !=
+          gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE) {
+        networkConnectionInfo.has_mobile_subtype = 1;
+      }
+    } else {
+      networkConnectionInfo.network_type = gdt_cct_NetworkConnectionInfo_NetworkType_WIFI;
+    }
+  }
+  NSData *networkConnectionInfoData = [NSData dataWithBytes:&networkConnectionInfo
+                                                     length:sizeof(networkConnectionInfo)];
+  return networkConnectionInfoData;
+}
+
+gdt_cct_NetworkConnectionInfo_MobileSubtype GDTCCTNetworkConnectionInfoNetworkMobileSubtype() {
+  NSNumber *networkMobileSubtypeMessage = @(GDTCORNetworkMobileSubTypeMessage());
+  if (!networkMobileSubtypeMessage.intValue) {
+    return gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE;
+  }
+  static NSDictionary<NSNumber *, NSNumber *> *MessageToNetworkSubTypeMessage;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    MessageToNetworkSubTypeMessage = @{
+      @(GDTCORNetworkMobileSubtypeGPRS) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_GPRS),
+      @(GDTCORNetworkMobileSubtypeEdge) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_EDGE),
+      @(GDTCORNetworkMobileSubtypeWCDMA) :
+          @(gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE),
+      @(GDTCORNetworkMobileSubtypeHSDPA) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_HSDPA),
+      @(GDTCORNetworkMobileSubtypeHSUPA) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_HSUPA),
+      @(GDTCORNetworkMobileSubtypeCDMA1x) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_CDMA),
+      @(GDTCORNetworkMobileSubtypeCDMAEVDORev0) :
+          @(gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_0),
+      @(GDTCORNetworkMobileSubtypeCDMAEVDORevA) :
+          @(gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_A),
+      @(GDTCORNetworkMobileSubtypeCDMAEVDORevB) :
+          @(gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_B),
+      @(GDTCORNetworkMobileSubtypeHRPD) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_EHRPD),
+      @(GDTCORNetworkMobileSubtypeLTE) : @(gdt_cct_NetworkConnectionInfo_MobileSubtype_LTE),
+    };
+  });
+  NSNumber *networkMobileSubtype = MessageToNetworkSubTypeMessage[networkMobileSubtypeMessage];
+  return networkMobileSubtype.intValue;
+}
+
+#pragma mark - CCT Object decoders
+
+gdt_cct_LogResponse GDTCCTDecodeLogResponse(NSData *data, NSError **error) {
+  gdt_cct_LogResponse response = gdt_cct_LogResponse_init_default;
+  pb_istream_t istream = pb_istream_from_buffer([data bytes], [data length]);
+  if (!pb_decode(&istream, gdt_cct_LogResponse_fields, &response)) {
+    NSString *nanopb_error = [NSString stringWithFormat:@"%s", PB_GET_ERROR(&istream)];
+    NSDictionary *userInfo = @{@"nanopb error:" : nanopb_error};
+    if (error != NULL) {
+      *error = [NSError errorWithDomain:NSURLErrorDomain code:-1 userInfo:userInfo];
+    }
+    response = (gdt_cct_LogResponse)gdt_cct_LogResponse_init_default;
+  }
+  return response;
+}
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploadOperation.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploadOperation.m
new file mode 100644
index 0000000..f3887df
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploadOperation.m	
@@ -0,0 +1,573 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploadOperation.h"
+
+#if __has_include(<FBLPromises/FBLPromises.h>)
+#import <FBLPromises/FBLPromises.h>
+#else
+#import "FBLPromises.h"
+#endif
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import <nanopb/pb.h>
+#import <nanopb/pb_decode.h>
+#import <nanopb/pb_encode.h>
+
+#import <GoogleUtilities/GULURLSessionDataResponse.h>
+#import <GoogleUtilities/NSURLSession+GULPromises.h>
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTCompressionHelper.h"
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h"
+
+#import "GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+#ifdef GDTCOR_VERSION
+#define STR(x) STR_EXPAND(x)
+#define STR_EXPAND(x) #x
+static NSString *const kGDTCCTSupportSDKVersion = @STR(GDTCOR_VERSION);
+#else
+static NSString *const kGDTCCTSupportSDKVersion = @"UNKNOWN";
+#endif  // GDTCOR_VERSION
+
+typedef void (^GDTCCTUploaderURLTaskCompletion)(NSNumber *batchID,
+                                                NSSet<GDTCOREvent *> *_Nullable events,
+                                                NSData *_Nullable data,
+                                                NSURLResponse *_Nullable response,
+                                                NSError *_Nullable error);
+
+typedef void (^GDTCCTUploaderEventBatchBlock)(NSNumber *_Nullable batchID,
+                                              NSSet<GDTCOREvent *> *_Nullable events);
+
+@interface GDTCCTUploadOperation () <NSURLSessionDelegate>
+
+/// The properties to store parameters passed in the initializer. See the initialized docs for
+/// details.
+@property(nonatomic, readonly) GDTCORTarget target;
+@property(nonatomic, readonly) GDTCORUploadConditions conditions;
+@property(nonatomic, readonly) NSURL *uploadURL;
+@property(nonatomic, readonly) id<GDTCORStoragePromiseProtocol> storage;
+@property(nonatomic, readonly) id<GDTCCTUploadMetadataProvider> metadataProvider;
+
+/** The URL session that will attempt upload. */
+@property(nonatomic) NSURLSession *uploaderSession;
+
+/// NSOperation state properties implementation.
+@property(nonatomic, readwrite, getter=isExecuting) BOOL executing;
+@property(nonatomic, readwrite, getter=isFinished) BOOL finished;
+
+@property(nonatomic, readwrite) BOOL uploadAttempted;
+
+@end
+
+@implementation GDTCCTUploadOperation
+
+- (instancetype)initWithTarget:(GDTCORTarget)target
+                    conditions:(GDTCORUploadConditions)conditions
+                     uploadURL:(NSURL *)uploadURL
+                         queue:(dispatch_queue_t)queue
+                       storage:(id<GDTCORStoragePromiseProtocol>)storage
+              metadataProvider:(id<GDTCCTUploadMetadataProvider>)metadataProvider {
+  self = [super init];
+  if (self) {
+    _uploaderQueue = queue;
+    _target = target;
+    _conditions = conditions;
+    _uploadURL = uploadURL;
+    _storage = storage;
+    _metadataProvider = metadataProvider;
+  }
+  return self;
+}
+
+- (NSURLSession *)uploaderSessionCreateIfNeeded {
+  if (_uploaderSession == nil) {
+    NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
+    _uploaderSession = [NSURLSession sessionWithConfiguration:config
+                                                     delegate:self
+                                                delegateQueue:nil];
+  }
+  return _uploaderSession;
+}
+
+- (void)uploadTarget:(GDTCORTarget)target withConditions:(GDTCORUploadConditions)conditions {
+  __block GDTCORBackgroundIdentifier backgroundTaskID = GDTCORBackgroundIdentifierInvalid;
+
+  dispatch_block_t backgroundTaskCompletion = ^{
+    // End the background task if there was one.
+    if (backgroundTaskID != GDTCORBackgroundIdentifierInvalid) {
+      [[GDTCORApplication sharedApplication] endBackgroundTask:backgroundTaskID];
+      backgroundTaskID = GDTCORBackgroundIdentifierInvalid;
+    }
+  };
+
+  backgroundTaskID = [[GDTCORApplication sharedApplication]
+      beginBackgroundTaskWithName:@"GDTCCTUploader-upload"
+                expirationHandler:^{
+                  if (backgroundTaskID != GDTCORBackgroundIdentifierInvalid) {
+                    // Cancel the upload and complete delivery.
+                    [self.currentTask cancel];
+
+                    // End the background task.
+                    backgroundTaskCompletion();
+                  }
+                }];
+
+  id<GDTCORStoragePromiseProtocol> storage = self.storage;
+
+  // 1. Check if the conditions for the target are suitable.
+  [self isReadyToUploadTarget:target conditions:conditions]
+      .thenOn(self.uploaderQueue,
+              ^id(id result) {
+                // 2. Remove previously attempted batches
+                return [storage removeAllBatchesForTarget:target deleteEvents:NO];
+              })
+      .thenOn(self.uploaderQueue,
+              ^FBLPromise<NSNumber *> *(id result) {
+                // There may be a big amount of events stored, so creating a batch may be an
+                // expensive operation.
+
+                // 3. Do a lightweight check if there are any events for the target first to
+                // finish early if there are no.
+                return [storage hasEventsForTarget:target];
+              })
+      .validateOn(self.uploaderQueue,
+                  ^BOOL(NSNumber *hasEvents) {
+                    // Stop operation if there are no events to upload.
+                    return hasEvents.boolValue;
+                  })
+      .thenOn(self.uploaderQueue,
+              ^FBLPromise<GDTCORUploadBatch *> *(id result) {
+                if (self.isCancelled) {
+                  return nil;
+                }
+
+                // 4. Fetch events to upload.
+                GDTCORStorageEventSelector *eventSelector = [self eventSelectorTarget:target
+                                                                       withConditions:conditions];
+                return [storage batchWithEventSelector:eventSelector
+                                       batchExpiration:[NSDate dateWithTimeIntervalSinceNow:600]];
+              })
+      .validateOn(self.uploaderQueue,
+                  ^BOOL(GDTCORUploadBatch *batch) {
+                    // 5. Validate batch.
+                    return batch.batchID != nil && batch.events.count > 0;
+                  })
+      .thenOn(self.uploaderQueue,
+              ^FBLPromise *(GDTCORUploadBatch *batch) {
+                // A non-empty batch has been created, consider it as an upload attempt.
+                self.uploadAttempted = YES;
+
+                // 6. Perform upload URL request.
+                return [self sendURLRequestWithBatch:batch target:target storage:storage];
+              })
+      .thenOn(self.uploaderQueue,
+              ^id(id result) {
+                // 7. Finish operation.
+                [self finishOperation];
+                backgroundTaskCompletion();
+                return nil;
+              })
+      .catchOn(self.uploaderQueue, ^(NSError *error) {
+        // TODO: Maybe report the error to the client.
+        [self finishOperation];
+        backgroundTaskCompletion();
+      });
+}
+
+#pragma mark - Upload implementation details
+
+/** Sends URL request to upload the provided batch and handle the response. */
+- (FBLPromise<NSNull *> *)sendURLRequestWithBatch:(GDTCORUploadBatch *)batch
+                                           target:(GDTCORTarget)target
+                                          storage:(id<GDTCORStoragePromiseProtocol>)storage {
+  NSNumber *batchID = batch.batchID;
+
+  // 1. Send URL request.
+  return [self sendURLRequestWithBatch:batch target:target]
+      .thenOn(
+          self.uploaderQueue,
+          ^FBLPromise<NSNull *> *(GULURLSessionDataResponse *response) {
+            // 2. Parse response and update the next upload time if can.
+            [self updateNextUploadTimeWithResponse:response forTarget:target];
+
+            // 3. Cleanup batch.
+
+            // Only retry if one of these codes is returned:
+            // 429 - Too many requests;
+            // 5xx - Server errors.
+            NSInteger statusCode = response.HTTPResponse.statusCode;
+            if (statusCode == 429 || (statusCode >= 500 && statusCode < 600)) {
+              // Move the events back to the main storage to be uploaded on the next attempt.
+              return [storage removeBatchWithID:batchID deleteEvents:NO];
+            } else {
+              if (statusCode >= 200 && statusCode <= 300) {
+                GDTCORLogDebug(@"CCT: batch %@ delivered", batchID);
+              } else {
+                GDTCORLogDebug(
+                    @"CCT: batch %@ was rejected by the server and will be deleted with all events",
+                    batchID);
+              }
+
+              // The events are either delivered or unrecoverable broken, so remove the batch with
+              // events.
+              return [storage removeBatchWithID:batch.batchID deleteEvents:YES];
+            }
+          })
+      .recoverOn(self.uploaderQueue, ^id(NSError *error) {
+        // In the case of a network error move the events back to the main storage to be uploaded on
+        // the next attempt.
+        return [storage removeBatchWithID:batchID deleteEvents:NO];
+      });
+}
+
+/** Composes and sends URL request. */
+- (FBLPromise<GULURLSessionDataResponse *> *)sendURLRequestWithBatch:(GDTCORUploadBatch *)batch
+                                                              target:(GDTCORTarget)target {
+  return [FBLPromise
+             onQueue:self.uploaderQueue
+                  do:^NSURLRequest * {
+                    // 1. Prepare URL request.
+                    NSData *requestProtoData = [self constructRequestProtoWithEvents:batch.events];
+                    NSData *gzippedData = [GDTCCTCompressionHelper gzippedData:requestProtoData];
+                    BOOL usingGzipData =
+                        gzippedData != nil && gzippedData.length < requestProtoData.length;
+                    NSData *dataToSend = usingGzipData ? gzippedData : requestProtoData;
+                    NSURLRequest *request = [self constructRequestWithURL:self.uploadURL
+                                                                forTarget:target
+                                                                     data:dataToSend];
+                    GDTCORLogDebug(@"CTT: request containing %lu events for batch: %@ for target: "
+                                   @"%ld created: %@",
+                                   (unsigned long)batch.events.count, batch.batchID, (long)target,
+                                   request);
+                    return request;
+                  }]
+      .thenOn(self.uploaderQueue,
+              ^FBLPromise<GULURLSessionDataResponse *> *(NSURLRequest *request) {
+                // 2. Send URL request.
+                return
+                    [[self uploaderSessionCreateIfNeeded] gul_dataTaskPromiseWithRequest:request];
+              })
+      .thenOn(self.uploaderQueue,
+              ^GULURLSessionDataResponse *(GULURLSessionDataResponse *response) {
+                // Invalidate session to release the delegate (which is `self`) to break the retain
+                // cycle.
+                [self.uploaderSession finishTasksAndInvalidate];
+                return response;
+              })
+      .recoverOn(self.uploaderQueue, ^id(NSError *error) {
+        // Invalidate session to release the delegate (which is `self`) to break the retain cycle.
+        [self.uploaderSession finishTasksAndInvalidate];
+        // Re-throw the error.
+        return error;
+      });
+}
+
+/** Parses server response and update next upload time for the specified target based on it. */
+- (void)updateNextUploadTimeWithResponse:(GULURLSessionDataResponse *)response
+                               forTarget:(GDTCORTarget)target {
+  GDTCORClock *futureUploadTime;
+  if (response.HTTPBody) {
+    NSError *decodingError;
+    gdt_cct_LogResponse logResponse = GDTCCTDecodeLogResponse(response.HTTPBody, &decodingError);
+    if (!decodingError && logResponse.has_next_request_wait_millis) {
+      GDTCORLogDebug(@"CCT: The backend responded asking to not upload for %lld millis from now.",
+                     logResponse.next_request_wait_millis);
+      futureUploadTime =
+          [GDTCORClock clockSnapshotInTheFuture:logResponse.next_request_wait_millis];
+    } else if (decodingError) {
+      GDTCORLogDebug(@"There was a response decoding error: %@", decodingError);
+    }
+    pb_release(gdt_cct_LogResponse_fields, &logResponse);
+  }
+
+  // If no futureUploadTime was parsed from the response body, then check
+  // [Retry-After](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After) header.
+  if (!futureUploadTime) {
+    NSString *retryAfterHeader = response.HTTPResponse.allHeaderFields[@"Retry-After"];
+    if (retryAfterHeader.length > 0) {
+      NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
+      formatter.numberStyle = NSNumberFormatterDecimalStyle;
+      NSNumber *retryAfterSeconds = [formatter numberFromString:retryAfterHeader];
+      if (retryAfterSeconds != nil) {
+        uint64_t retryAfterMillis = retryAfterSeconds.unsignedIntegerValue * 1000u;
+        futureUploadTime = [GDTCORClock clockSnapshotInTheFuture:retryAfterMillis];
+      }
+    }
+  }
+
+  if (!futureUploadTime) {
+    GDTCORLogDebug(@"%@", @"CCT: The backend response failed to parse, so the next request "
+                          @"won't occur until 15 minutes from now");
+    // 15 minutes from now.
+    futureUploadTime = [GDTCORClock clockSnapshotInTheFuture:15 * 60 * 1000];
+  }
+
+  [self.metadataProvider setNextUploadTime:futureUploadTime forTarget:target];
+}
+
+#pragma mark - Private helper methods
+
+/** @return A resolved promise if is ready and a rejected promise if not. */
+- (FBLPromise<NSNull *> *)isReadyToUploadTarget:(GDTCORTarget)target
+                                     conditions:(GDTCORUploadConditions)conditions {
+  FBLPromise<NSNull *> *promise = [FBLPromise pendingPromise];
+  if ([self readyToUploadTarget:target conditions:conditions]) {
+    [promise fulfill:[NSNull null]];
+  } else {
+    NSString *reason =
+        [NSString stringWithFormat:@"Target %ld is not ready to upload with condition: %ld",
+                                   (long)target, (long)conditions];
+    [promise reject:[self genericRejectedPromiseErrorWithReason:reason]];
+  }
+  return promise;
+}
+
+// TODO: Move to a separate class/extension/file when needed in other files.
+/** Returns an error object with the specified failure reason. */
+- (NSError *)genericRejectedPromiseErrorWithReason:(NSString *)reason {
+  return [NSError errorWithDomain:@"GDTCCTUploader"
+                             code:-1
+                         userInfo:@{NSLocalizedFailureReasonErrorKey : reason}];
+}
+
+/** Returns if the specified target is ready to be uploaded based on the specified conditions. */
+- (BOOL)readyToUploadTarget:(GDTCORTarget)target conditions:(GDTCORUploadConditions)conditions {
+  // Not ready to upload with no network connection.
+  // TODO: Reconsider using reachability to prevent an upload attempt.
+  // See https://developer.apple.com/videos/play/wwdc2019/712/ (49:40) for more details.
+  if (conditions & GDTCORUploadConditionNoNetwork) {
+    GDTCORLogDebug(@"%@", @"CCT: Not ready to upload without a network connection.");
+    return NO;
+  }
+
+  // Upload events with no additional conditions if high priority.
+  if ((conditions & GDTCORUploadConditionHighPriority) == GDTCORUploadConditionHighPriority) {
+    GDTCORLogDebug(@"%@", @"CCT: a high priority event is allowing an upload");
+    return YES;
+  }
+
+  // Check next upload time for the target.
+  BOOL isAfterNextUploadTime = YES;
+  GDTCORClock *nextUploadTime = [self.metadataProvider nextUploadTimeForTarget:target];
+  if (nextUploadTime) {
+    isAfterNextUploadTime = [[GDTCORClock snapshot] isAfter:nextUploadTime];
+  }
+
+  if (isAfterNextUploadTime) {
+    GDTCORLogDebug(@"CCT: can upload to target %ld because the request wait time has transpired",
+                   (long)target);
+  } else {
+    GDTCORLogDebug(@"CCT: can't upload to target %ld because the backend asked to wait",
+                   (long)target);
+  }
+
+  return isAfterNextUploadTime;
+}
+
+/** Constructs data given an upload package.
+ *
+ * @param events The events used to construct the request proto bytes.
+ * @return Proto bytes representing a gdt_cct_LogRequest object.
+ */
+- (nonnull NSData *)constructRequestProtoWithEvents:(NSSet<GDTCOREvent *> *)events {
+  // Segment the log events by log type.
+  NSMutableDictionary<NSString *, NSMutableSet<GDTCOREvent *> *> *logMappingIDToLogSet =
+      [[NSMutableDictionary alloc] init];
+  [events enumerateObjectsUsingBlock:^(GDTCOREvent *_Nonnull event, BOOL *_Nonnull stop) {
+    NSMutableSet *logSet = logMappingIDToLogSet[event.mappingID];
+    logSet = logSet ? logSet : [[NSMutableSet alloc] init];
+    [logSet addObject:event];
+    logMappingIDToLogSet[event.mappingID] = logSet;
+  }];
+
+  gdt_cct_BatchedLogRequest batchedLogRequest =
+      GDTCCTConstructBatchedLogRequest(logMappingIDToLogSet);
+
+  NSData *data = GDTCCTEncodeBatchedLogRequest(&batchedLogRequest);
+  pb_release(gdt_cct_BatchedLogRequest_fields, &batchedLogRequest);
+  return data ? data : [[NSData alloc] init];
+}
+
+/** Constructs a request to the given URL and target with the specified request body data.
+ *
+ * @param target The target backend to send the request to.
+ * @param data The request body data.
+ * @return A new NSURLRequest ready to be sent to FLL.
+ */
+- (nullable NSURLRequest *)constructRequestWithURL:(NSURL *)URL
+                                         forTarget:(GDTCORTarget)target
+                                              data:(NSData *)data {
+  if (data == nil || data.length == 0) {
+    GDTCORLogDebug(@"There was no data to construct a request for target %ld.", (long)target);
+    return nil;
+  }
+
+  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
+  NSString *targetString;
+  switch (target) {
+    case kGDTCORTargetCCT:
+      targetString = @"cct";
+      break;
+
+    case kGDTCORTargetFLL:
+      targetString = @"fll";
+      break;
+
+    case kGDTCORTargetCSH:
+      targetString = @"csh";
+      break;
+    case kGDTCORTargetINT:
+      targetString = @"int";
+      break;
+
+    default:
+      targetString = @"unknown";
+      break;
+  }
+  NSString *userAgent =
+      [NSString stringWithFormat:@"datatransport/%@ %@support/%@ apple/", kGDTCORVersion,
+                                 targetString, kGDTCCTSupportSDKVersion];
+
+  [request setValue:[self.metadataProvider APIKeyForTarget:target]
+      forHTTPHeaderField:@"X-Goog-Api-Key"];
+
+  if ([GDTCCTCompressionHelper isGzipped:data]) {
+    [request setValue:@"gzip" forHTTPHeaderField:@"Content-Encoding"];
+  }
+  [request setValue:@"application/x-protobuf" forHTTPHeaderField:@"Content-Type"];
+  [request setValue:@"gzip" forHTTPHeaderField:@"Accept-Encoding"];
+  [request setValue:userAgent forHTTPHeaderField:@"User-Agent"];
+  request.HTTPMethod = @"POST";
+  [request setHTTPBody:data];
+  return request;
+}
+
+/** Creates and returns a storage event selector for the specified target and conditions. */
+- (GDTCORStorageEventSelector *)eventSelectorTarget:(GDTCORTarget)target
+                                     withConditions:(GDTCORUploadConditions)conditions {
+  if ((conditions & GDTCORUploadConditionHighPriority) == GDTCORUploadConditionHighPriority) {
+    return [GDTCORStorageEventSelector eventSelectorForTarget:target];
+  }
+  NSMutableSet<NSNumber *> *qosTiers = [[NSMutableSet alloc] init];
+  if (conditions & GDTCORUploadConditionWifiData) {
+    [qosTiers addObjectsFromArray:@[
+      @(GDTCOREventQoSFast), @(GDTCOREventQoSWifiOnly), @(GDTCOREventQosDefault),
+      @(GDTCOREventQoSTelemetry), @(GDTCOREventQoSUnknown)
+    ]];
+  }
+  if (conditions & GDTCORUploadConditionMobileData) {
+    [qosTiers addObjectsFromArray:@[ @(GDTCOREventQoSFast), @(GDTCOREventQosDefault) ]];
+  }
+
+  return [[GDTCORStorageEventSelector alloc] initWithTarget:target
+                                                   eventIDs:nil
+                                                 mappingIDs:nil
+                                                   qosTiers:qosTiers];
+}
+
+#pragma mark - NSURLSessionDelegate
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+                    newRequest:(NSURLRequest *)request
+             completionHandler:(void (^)(NSURLRequest *_Nullable))completionHandler {
+  if (!completionHandler) {
+    return;
+  }
+  if (response.statusCode == 302 || response.statusCode == 301) {
+    NSURLRequest *newRequest = [self constructRequestWithURL:request.URL
+                                                   forTarget:kGDTCORTargetCCT
+                                                        data:task.originalRequest.HTTPBody];
+    completionHandler(newRequest);
+  } else {
+    completionHandler(request);
+  }
+}
+
+#pragma mark - NSOperation methods
+
+@synthesize executing = _executing;
+@synthesize finished = _finished;
+
+- (BOOL)isFinished {
+  @synchronized(self) {
+    return _finished;
+  }
+}
+
+- (BOOL)isExecuting {
+  @synchronized(self) {
+    return _executing;
+  }
+}
+
+- (BOOL)isAsynchronous {
+  return YES;
+}
+
+- (void)startOperation {
+  @synchronized(self) {
+    [self willChangeValueForKey:@"isExecuting"];
+    [self willChangeValueForKey:@"isFinished"];
+    self->_executing = YES;
+    self->_finished = NO;
+    [self didChangeValueForKey:@"isExecuting"];
+    [self didChangeValueForKey:@"isFinished"];
+  }
+}
+
+- (void)finishOperation {
+  @synchronized(self) {
+    [self willChangeValueForKey:@"isExecuting"];
+    [self willChangeValueForKey:@"isFinished"];
+    self->_executing = NO;
+    self->_finished = YES;
+    [self didChangeValueForKey:@"isExecuting"];
+    [self didChangeValueForKey:@"isFinished"];
+  }
+}
+
+- (void)start {
+  [self startOperation];
+
+  GDTCORLogDebug(@"Upload operation started: %@", self);
+  [self uploadTarget:self.target withConditions:self.conditions];
+}
+
+- (void)cancel {
+  @synchronized(self) {
+    [super cancel];
+
+    // If the operation hasn't been started we can set `isFinished = YES` straight away.
+    if (!_executing) {
+      _executing = NO;
+      _finished = YES;
+    }
+  }
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploader.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploader.m
new file mode 100644
index 0000000..d25dc54
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCCTUploader.m	
@@ -0,0 +1,210 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploader.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploadOperation.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GDTCCTUploader () <NSURLSessionDelegate, GDTCCTUploadMetadataProvider>
+
+@property(nonatomic, readonly) NSOperationQueue *uploadOperationQueue;
+@property(nonatomic, readonly) dispatch_queue_t uploadQueue;
+
+@property(nonatomic, readonly)
+    NSMutableDictionary<NSNumber * /*GDTCORTarget*/, GDTCORClock *> *nextUploadTimeByTarget;
+
+@end
+
+@implementation GDTCCTUploader
+
+static NSURL *_testServerURL = nil;
+
++ (void)load {
+  GDTCCTUploader *uploader = [GDTCCTUploader sharedInstance];
+  [[GDTCORRegistrar sharedInstance] registerUploader:uploader target:kGDTCORTargetCCT];
+  [[GDTCORRegistrar sharedInstance] registerUploader:uploader target:kGDTCORTargetFLL];
+  [[GDTCORRegistrar sharedInstance] registerUploader:uploader target:kGDTCORTargetCSH];
+  [[GDTCORRegistrar sharedInstance] registerUploader:uploader target:kGDTCORTargetINT];
+}
+
++ (instancetype)sharedInstance {
+  static GDTCCTUploader *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[GDTCCTUploader alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _uploadQueue = dispatch_queue_create("com.google.GDTCCTUploader", DISPATCH_QUEUE_SERIAL);
+    _uploadOperationQueue = [[NSOperationQueue alloc] init];
+    _uploadOperationQueue.maxConcurrentOperationCount = 1;
+    _nextUploadTimeByTarget = [[NSMutableDictionary alloc] init];
+  }
+  return self;
+}
+
+- (void)uploadTarget:(GDTCORTarget)target withConditions:(GDTCORUploadConditions)conditions {
+  // Current GDTCCTUploader expected behaviour:
+  // 1. Accept multiple upload request
+  // 2. Verify if there are events eligible for upload and start upload for the first suitable
+  // target
+  // 3. Ignore other requests while an upload is in-progress.
+
+  // TODO: Revisit expected behaviour.
+  // Potentially better option:
+  // 1. Accept and enqueue all upload requests
+  // 2. Notify the client of upload stages
+  // 3. Allow the client cancelling upload requests as needed.
+
+  id<GDTCORStoragePromiseProtocol> storage = GDTCORStoragePromiseInstanceForTarget(target);
+  if (storage == nil) {
+    GDTCORLogError(GDTCORMCEGeneralError,
+                   @"Failed to upload target: %ld - could not find corresponding storage instance.",
+                   (long)target);
+    return;
+  }
+
+  GDTCCTUploadOperation *uploadOperation =
+      [[GDTCCTUploadOperation alloc] initWithTarget:target
+                                         conditions:conditions
+                                          uploadURL:[[self class] serverURLForTarget:target]
+                                              queue:self.uploadQueue
+                                            storage:storage
+                                   metadataProvider:self];
+
+  GDTCORLogDebug(@"Upload operation created: %@, target: %@", uploadOperation, @(target));
+
+  __weak __auto_type weakSelf = self;
+  __weak GDTCCTUploadOperation *weakOperation = uploadOperation;
+  uploadOperation.completionBlock = ^{
+    __auto_type strongSelf = weakSelf;
+    GDTCCTUploadOperation *strongOperation = weakOperation;
+    if (strongSelf == nil || strongOperation == nil) {
+      GDTCORLogDebug(@"Internal inconsistency: GDTCCTUploader was deallocated during upload.", nil);
+      return;
+    }
+
+    GDTCORLogDebug(@"Upload operation finished: %@, uploadAttempted: %@", strongOperation,
+                   @(strongOperation.uploadAttempted));
+
+    if (strongOperation.uploadAttempted) {
+      // Ignore all upload requests received when the upload was in progress.
+      [strongSelf.uploadOperationQueue cancelAllOperations];
+    }
+  };
+
+  [self.uploadOperationQueue addOperation:uploadOperation];
+  GDTCORLogDebug(@"Upload operation scheduled: %@, operation count: %@", uploadOperation,
+                 @(self.uploadOperationQueue.operationCount));
+}
+
+#pragma mark - URLs
+
++ (void)setTestServerURL:(NSURL *_Nullable)serverURL {
+  _testServerURL = serverURL;
+}
+
++ (NSURL *_Nullable)testServerURL {
+  return _testServerURL;
+}
+
++ (nullable NSURL *)serverURLForTarget:(GDTCORTarget)target {
+#if !NDEBUG
+  if (_testServerURL) {
+    return _testServerURL;
+  }
+#endif  // !NDEBUG
+
+  return [GDTCOREndpoints uploadURLForTarget:target];
+}
+
+- (NSString *)FLLAndCSHAndINTAPIKey {
+  static NSString *defaultServerKey;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    // These strings should be interleaved to construct the real key.
+    const char *p1 = "AzSBG0honD6A-PxV5nBc";
+    const char *p2 = "Iay44Iwtu2vV0AOrz1C";
+    const char defaultKey[40] = {p1[0],  p2[0],  p1[1],  p2[1],  p1[2],  p2[2],  p1[3],  p2[3],
+                                 p1[4],  p2[4],  p1[5],  p2[5],  p1[6],  p2[6],  p1[7],  p2[7],
+                                 p1[8],  p2[8],  p1[9],  p2[9],  p1[10], p2[10], p1[11], p2[11],
+                                 p1[12], p2[12], p1[13], p2[13], p1[14], p2[14], p1[15], p2[15],
+                                 p1[16], p2[16], p1[17], p2[17], p1[18], p2[18], p1[19], '\0'};
+    defaultServerKey = [NSString stringWithUTF8String:defaultKey];
+  });
+  return defaultServerKey;
+}
+
+#pragma mark - GDTCCTUploadMetadataProvider
+
+- (nullable GDTCORClock *)nextUploadTimeForTarget:(GDTCORTarget)target {
+  @synchronized(self.nextUploadTimeByTarget) {
+    return self.nextUploadTimeByTarget[@(target)];
+  }
+}
+
+- (void)setNextUploadTime:(nullable GDTCORClock *)time forTarget:(GDTCORTarget)target {
+  @synchronized(self.nextUploadTimeByTarget) {
+    self.nextUploadTimeByTarget[@(target)] = time;
+  }
+}
+
+- (nullable NSString *)APIKeyForTarget:(GDTCORTarget)target {
+  if (target == kGDTCORTargetFLL || target == kGDTCORTargetCSH) {
+    return [self FLLAndCSHAndINTAPIKey];
+  }
+
+  if (target == kGDTCORTargetINT) {
+    return [self FLLAndCSHAndINTAPIKey];
+  }
+
+  return nil;
+}
+
+#if !NDEBUG
+
+- (BOOL)waitForUploadFinishedWithTimeout:(NSTimeInterval)timeout {
+  NSDate *expirationDate = [NSDate dateWithTimeIntervalSinceNow:timeout];
+  while ([expirationDate compare:[NSDate date]] == NSOrderedDescending) {
+    if (self.uploadOperationQueue.operationCount == 0) {
+      return YES;
+    } else {
+      [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.1]];
+    }
+  }
+
+  GDTCORLogDebug(@"Uploader wait for finish timeout exceeded. Operations still in queue: %@",
+                 self.uploadOperationQueue.operations);
+  return NO;
+}
+
+#endif  // !NDEBUG
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCOREvent+GDTCCTSupport.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCOREvent+GDTCCTSupport.m
new file mode 100644
index 0000000..1c77b4c
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/GDTCOREvent+GDTCCTSupport.m	
@@ -0,0 +1,240 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCCTLibrary/Public/GDTCOREvent+GDTCCTSupport.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+NSString *const GDTCCTNeedsNetworkConnectionInfo = @"needs_network_connection_info";
+
+NSString *const GDTCCTNetworkConnectionInfo = @"network_connection_info";
+
+NSString *const GDTCCTEventCodeInfo = @"event_code_info";
+
+@implementation GDTCOREvent (GDTCCTSupport)
+
+- (void)setNeedsNetworkConnectionInfoPopulated:(BOOL)needsNetworkConnectionInfoPopulated {
+  if (!needsNetworkConnectionInfoPopulated) {
+    if (!self.customBytes) {
+      return;
+    }
+
+    // Make sure we don't destroy the eventCode data, if any is present.
+    @try {
+      NSError *error;
+      NSMutableDictionary *bytesDict =
+          [[NSJSONSerialization JSONObjectWithData:self.customBytes options:0
+                                             error:&error] mutableCopy];
+      if (error) {
+        GDTCORLogDebug(@"Error when setting an event's event_code: %@", error);
+        return;
+      }
+      NSNumber *eventCode = bytesDict[GDTCCTEventCodeInfo];
+      if (eventCode != nil) {
+        self.customBytes =
+            [NSJSONSerialization dataWithJSONObject:@{GDTCCTEventCodeInfo : eventCode}
+                                            options:0
+                                              error:&error];
+      }
+    } @catch (NSException *exception) {
+      GDTCORLogDebug(@"Error when setting the event for needs_network_connection_info: %@",
+                     exception);
+    }
+  } else {
+    @try {
+      NSError *error;
+      NSMutableDictionary *bytesDict;
+      if (self.customBytes) {
+        bytesDict = [[NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                     options:0
+                                                       error:&error] mutableCopy];
+        if (error) {
+          GDTCORLogDebug(@"Error when setting an even'ts event_code: %@", error);
+          return;
+        }
+      } else {
+        bytesDict = [[NSMutableDictionary alloc] init];
+      }
+      [bytesDict setObject:@YES forKey:GDTCCTNeedsNetworkConnectionInfo];
+      self.customBytes = [NSJSONSerialization dataWithJSONObject:bytesDict options:0 error:&error];
+    } @catch (NSException *exception) {
+      GDTCORLogDebug(@"Error when setting the event for needs_network_connection_info: %@",
+                     exception);
+    }
+  }
+}
+
+- (BOOL)needsNetworkConnectionInfoPopulated {
+  if (self.customBytes) {
+    @try {
+      NSError *error;
+      NSDictionary *bytesDict = [NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                                options:0
+                                                                  error:&error];
+      return bytesDict && !error && [bytesDict[GDTCCTNeedsNetworkConnectionInfo] boolValue];
+    } @catch (NSException *exception) {
+      GDTCORLogDebug(@"Error when checking the event for needs_network_connection_info: %@",
+                     exception);
+    }
+  }
+  return NO;
+}
+
+- (void)setNetworkConnectionInfoData:(NSData *)networkConnectionInfoData {
+  @try {
+    NSError *error;
+    NSString *dataString = [networkConnectionInfoData base64EncodedStringWithOptions:0];
+    if (dataString != nil) {
+      NSMutableDictionary *bytesDict;
+      if (self.customBytes) {
+        bytesDict = [[NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                     options:0
+                                                       error:&error] mutableCopy];
+        if (error) {
+          GDTCORLogDebug(@"Error when setting an even'ts event_code: %@", error);
+          return;
+        }
+      } else {
+        bytesDict = [[NSMutableDictionary alloc] init];
+      }
+      [bytesDict setObject:dataString forKey:GDTCCTNetworkConnectionInfo];
+      self.customBytes = [NSJSONSerialization dataWithJSONObject:bytesDict options:0 error:&error];
+      if (error) {
+        self.customBytes = nil;
+        GDTCORLogDebug(@"Error when setting an event's network_connection_info: %@", error);
+      }
+    }
+  } @catch (NSException *exception) {
+    GDTCORLogDebug(@"Error when setting an event's network_connection_info: %@", exception);
+  }
+}
+
+- (nullable NSData *)networkConnectionInfoData {
+  if (self.customBytes) {
+    @try {
+      NSError *error;
+      NSDictionary *bytesDict = [NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                                options:0
+                                                                  error:&error];
+      NSString *base64Data = bytesDict[GDTCCTNetworkConnectionInfo];
+      if (base64Data == nil) {
+        return nil;
+      }
+
+      NSData *networkConnectionInfoData = [[NSData alloc] initWithBase64EncodedString:base64Data
+                                                                              options:0];
+      if (error) {
+        GDTCORLogDebug(@"Error when getting an event's network_connection_info: %@", error);
+        return nil;
+      } else {
+        return networkConnectionInfoData;
+      }
+    } @catch (NSException *exception) {
+      GDTCORLogDebug(@"Error when getting an event's network_connection_info: %@", exception);
+    }
+  }
+  return nil;
+}
+
+- (NSNumber *)eventCode {
+  if (self.customBytes) {
+    @try {
+      NSError *error;
+      NSDictionary *bytesDict = [NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                                options:0
+                                                                  error:&error];
+      NSString *eventCodeString = bytesDict[GDTCCTEventCodeInfo];
+
+      if (!eventCodeString) {
+        return nil;
+      }
+
+      NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
+      formatter.numberStyle = NSNumberFormatterDecimalStyle;
+      NSNumber *eventCode = [formatter numberFromString:eventCodeString];
+
+      if (error) {
+        GDTCORLogDebug(@"Error when getting an event's network_connection_info: %@", error);
+        return nil;
+      } else {
+        return eventCode;
+      }
+    } @catch (NSException *exception) {
+      GDTCORLogDebug(@"Error when getting an event's event_code: %@", exception);
+    }
+  }
+  return nil;
+}
+
+- (void)setEventCode:(NSNumber *)eventCode {
+  if (eventCode == nil) {
+    if (!self.customBytes) {
+      return;
+    }
+
+    NSError *error;
+    NSMutableDictionary *bytesDict = [[NSJSONSerialization JSONObjectWithData:self.customBytes
+                                                                      options:0
+                                                                        error:&error] mutableCopy];
+    if (error) {
+      GDTCORLogDebug(@"Error when setting an event's event_code: %@", error);
+      return;
+    }
+
+    [bytesDict removeObjectForKey:GDTCCTEventCodeInfo];
+    self.customBytes = [NSJSONSerialization dataWithJSONObject:bytesDict options:0 error:&error];
+    if (error) {
+      self.customBytes = nil;
+      GDTCORLogDebug(@"Error when setting an event's event_code: %@", error);
+      return;
+    }
+    return;
+  }
+
+  @try {
+    NSMutableDictionary *bytesDict;
+    NSError *error;
+    if (self.customBytes) {
+      bytesDict = [[NSJSONSerialization JSONObjectWithData:self.customBytes options:0
+                                                     error:&error] mutableCopy];
+      if (error) {
+        GDTCORLogDebug(@"Error when setting an event's event_code: %@", error);
+        return;
+      }
+    } else {
+      bytesDict = [[NSMutableDictionary alloc] init];
+    }
+
+    NSString *eventCodeString = [eventCode stringValue];
+    if (eventCodeString == nil) {
+      return;
+    }
+
+    [bytesDict setObject:eventCodeString forKey:GDTCCTEventCodeInfo];
+
+    self.customBytes = [NSJSONSerialization dataWithJSONObject:bytesDict options:0 error:&error];
+    if (error) {
+      self.customBytes = nil;
+      GDTCORLogDebug(@"Error when setting an event's network_connection_info: %@", error);
+      return;
+    }
+
+  } @catch (NSException *exception) {
+    GDTCORLogDebug(@"Error when getting an event's network_connection_info: %@", exception);
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTCompressionHelper.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTCompressionHelper.h
new file mode 100644
index 0000000..b53dd5f
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTCompressionHelper.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A class with methods to help with gzipped data. */
+@interface GDTCCTCompressionHelper : NSObject
+
+/** Compresses the given data and returns a new data object.
+ *
+ * @note Reduced version from GULNSData+zlib.m of GoogleUtilities.
+ * @return Compressed data, or nil if there was an error.
+ */
++ (nullable NSData *)gzippedData:(NSData *)data;
+
+/** Returns YES if the data looks like it was gzip compressed by checking for the gzip magic number.
+ *
+ * @note: From https://en.wikipedia.org/wiki/Gzip, gzip's magic number is 1f 8b.
+ * @return YES if the data appears gzipped, NO otherwise.
+ */
++ (BOOL)isGzipped:(NSData *)data;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h
new file mode 100644
index 0000000..8372cf9
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h	
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - General purpose encoders
+
+/** Converts an NSString* to a pb_bytes_array_t*.
+ *
+ * @note calloc is called in this method. Ensure that pb_release is called on this or the parent.
+ *
+ * @param string The string to convert.
+ * @return A newly allocated array of bytes representing the UTF8 encoding of the string.
+ */
+pb_bytes_array_t *GDTCCTEncodeString(NSString *string);
+
+/** Converts an NSData to a pb_bytes_array_t*.
+ *
+ * @note calloc is called in this method. Ensure that pb_release is called on this or the parent.
+ *
+ * @param data The data to convert.
+ * @return A newly allocated array of bytes with [data bytes] copied into it.
+ */
+pb_bytes_array_t *GDTCCTEncodeData(NSData *data);
+
+#pragma mark - CCT object constructors
+
+/** Encodes a batched log request.
+ *
+ * @note Ensure that pb_release is called on the batchedLogRequest param.
+ *
+ * @param batchedLogRequest A pointer to the log batch to encode to bytes.
+ * @return An NSData object representing the bytes of the log request batch.
+ */
+FOUNDATION_EXPORT
+NSData *GDTCCTEncodeBatchedLogRequest(gdt_cct_BatchedLogRequest *batchedLogRequest);
+
+/** Constructs a gdt_cct_BatchedLogRequest given sets of events segemented by mapping ID.
+ *
+ * @note calloc is called in this method. Ensure that pb_release is called on this or the parent.
+ *
+ * @param logMappingIDToLogSet A map of mapping IDs to sets of events to convert into a batch.
+ * @return A newly created gdt_cct_BatchedLogRequest.
+ */
+FOUNDATION_EXPORT
+gdt_cct_BatchedLogRequest GDTCCTConstructBatchedLogRequest(
+    NSDictionary<NSString *, NSSet<GDTCOREvent *> *> *logMappingIDToLogSet);
+
+/** Constructs a log request given a log source and a set of events.
+ *
+ * @note calloc is called in this method. Ensure that pb_release is called on this or the parent.
+ * @param logSource The CCT log source to put into the log request.
+ * @param logSet The set of events to send in this log request.
+ */
+FOUNDATION_EXPORT
+gdt_cct_LogRequest GDTCCTConstructLogRequest(int32_t logSource, NSSet<GDTCOREvent *> *logSet);
+
+/** Constructs a gdt_cct_LogEvent given a GDTCOREvent*.
+ *
+ * @param event The GDTCOREvent to convert.
+ * @return The new gdt_cct_LogEvent object.
+ */
+FOUNDATION_EXPORT
+gdt_cct_LogEvent GDTCCTConstructLogEvent(GDTCOREvent *event);
+
+/** Constructs a gdt_cct_ClientInfo representing the client device.
+ *
+ * @return The new gdt_cct_ClientInfo object.
+ */
+FOUNDATION_EXPORT
+gdt_cct_ClientInfo GDTCCTConstructClientInfo(void);
+
+/** Constructs a gdt_cct_IosClientInfo representing the client device.
+ *
+ * @return The new gdt_cct_IosClientInfo object.
+ */
+FOUNDATION_EXPORT
+gdt_cct_IosClientInfo GDTCCTConstructiOSClientInfo(void);
+
+/** Constructs the data of a gdt_cct_NetworkConnectionInfo representing the client nework connection
+ * information.
+ *
+ * @return The data of a gdt_cct_NetworkConnectionInfo object.
+ */
+FOUNDATION_EXPORT
+NSData *GDTCCTConstructNetworkConnectionInfoData(void);
+
+/** Return a gdt_cct_NetworkConnectionInfo_MobileSubtype representing the client
+ *
+ * @return The gdt_cct_NetworkConnectionInfo_MobileSubtype.
+ */
+FOUNDATION_EXPORT
+gdt_cct_NetworkConnectionInfo_MobileSubtype GDTCCTNetworkConnectionInfoNetworkMobileSubtype(void);
+
+#pragma mark - CCT object decoders
+
+/** Decodes a gdt_cct_LogResponse given proto bytes.
+ *
+ * @note calloc is called in this method. Ensure that pb_release is called on the return value.
+ *
+ * @param data The proto bytes of the gdt_cct_LogResponse.
+ * @param error An error that will be populated if something went wrong during decoding.
+ * @return A newly allocated gdt_cct_LogResponse from the data, if the bytes decoded properly.
+ */
+FOUNDATION_EXPORT
+gdt_cct_LogResponse GDTCCTDecodeLogResponse(NSData *data, NSError **error);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploadOperation.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploadOperation.h
new file mode 100644
index 0000000..3f63644
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploadOperation.h	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h"
+
+@protocol GDTCORStoragePromiseProtocol;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// The protocol defines methods to retrieve/update data shared between different upload operations.
+@protocol GDTCCTUploadMetadataProvider <NSObject>
+
+/** Returns a GDTCORClock object representing time after which a next upload attempt is allowed for
+ * the specified target. Upload is allowed now if `nil`. */
+- (nullable GDTCORClock *)nextUploadTimeForTarget:(GDTCORTarget)target;
+
+/** Stores or resets time after which  a next upload attempt is allowed for the specified target. */
+- (void)setNextUploadTime:(nullable GDTCORClock *)time forTarget:(GDTCORTarget)target;
+
+/** Returns an API key for the specified target. */
+- (nullable NSString *)APIKeyForTarget:(GDTCORTarget)target;
+
+@end
+
+/** Class capable of uploading events to the CCT backend. */
+@interface GDTCCTUploadOperation : NSOperation
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/** The designated initializer.
+ *  @param target The events target to upload.
+ *  @param conditions A set of upload conditions. The conditions affect the set of events to be
+ * uploaded, e.g. events with some QoS are not uploaded on a cellular network, etc.
+ *  @param uploadURL The backend URL to upload the events.
+ *  @param queue A queue to dispatch async upload steps.
+ *  @param storage A storage object to fetch events for upload.
+ *  @param metadataProvider An object to retrieve/update data shared between different upload
+ * operations.
+ *  @return An instance of GDTCCTUploadOperation ready to be added to an NSOperationQueue.
+ */
+- (instancetype)initWithTarget:(GDTCORTarget)target
+                    conditions:(GDTCORUploadConditions)conditions
+                     uploadURL:(NSURL *)uploadURL
+                         queue:(dispatch_queue_t)queue
+                       storage:(id<GDTCORStoragePromiseProtocol>)storage
+              metadataProvider:(id<GDTCCTUploadMetadataProvider>)metadataProvider
+    NS_DESIGNATED_INITIALIZER;
+
+/** YES if a batch upload attempt was performed. NO otherwise. If NO for the finished operation,
+ * then  there were no events suitable for upload. */
+@property(nonatomic, readonly) BOOL uploadAttempted;
+
+/** The queue on which all CCT uploading will occur. */
+@property(nonatomic, readonly) dispatch_queue_t uploaderQueue;
+
+/** The current upload task. */
+@property(nullable, nonatomic, readonly) NSURLSessionUploadTask *currentTask;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploader.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploader.h
new file mode 100644
index 0000000..876fbe1
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Private/GDTCCTUploader.h	
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Class capable of uploading events to the CCT backend. */
+@interface GDTCCTUploader : NSObject <GDTCORUploader>
+
+/** Creates and/or returns the singleton instance of this class.
+ *
+ * @return The singleton instance of this class.
+ */
++ (instancetype)sharedInstance;
+
+#if !NDEBUG
+/** An upload URL used across all targets. For testing only. */
+@property(class, nullable, nonatomic) NSURL *testServerURL;
+
+/** Spins runloop until upload finishes or timeout.
+ *  @return YES if upload finishes, NO in the case of timeout.
+ */
+- (BOOL)waitForUploadFinishedWithTimeout:(NSTimeInterval)timeout;
+
+#endif  // !NDEBUG
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.c b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.c
new file mode 100644
index 0000000..2f5327e
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.c	
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.3.9.7 */
+
+#include "GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h"
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+const gdt_cct_NetworkConnectionInfo_NetworkType gdt_cct_NetworkConnectionInfo_network_type_default = gdt_cct_NetworkConnectionInfo_NetworkType_NONE;
+const gdt_cct_NetworkConnectionInfo_MobileSubtype gdt_cct_NetworkConnectionInfo_mobile_subtype_default = gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE;
+const gdt_cct_QosTierConfiguration_QosTier gdt_cct_LogRequest_qos_tier_default = gdt_cct_QosTierConfiguration_QosTier_DEFAULT;
+const int32_t gdt_cct_QosTierConfiguration_log_source_default = 0;
+
+
+const pb_field_t gdt_cct_LogEvent_fields[7] = {
+    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, gdt_cct_LogEvent, event_time_ms, event_time_ms, 0),
+    PB_FIELD(  6, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_LogEvent, source_extension, event_time_ms, 0),
+    PB_FIELD( 11, INT32   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogEvent, event_code, source_extension, 0),
+    PB_FIELD( 15, SINT64  , OPTIONAL, STATIC  , OTHER, gdt_cct_LogEvent, timezone_offset_seconds, event_code, 0),
+    PB_FIELD( 17, INT64   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogEvent, event_uptime_ms, timezone_offset_seconds, 0),
+    PB_FIELD( 23, MESSAGE , OPTIONAL, STATIC  , OTHER, gdt_cct_LogEvent, network_connection_info, event_uptime_ms, &gdt_cct_NetworkConnectionInfo_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_NetworkConnectionInfo_fields[3] = {
+    PB_FIELD(  1, ENUM    , OPTIONAL, STATIC  , FIRST, gdt_cct_NetworkConnectionInfo, network_type, network_type, &gdt_cct_NetworkConnectionInfo_network_type_default),
+    PB_FIELD(  2, UENUM   , OPTIONAL, STATIC  , OTHER, gdt_cct_NetworkConnectionInfo, mobile_subtype, network_type, &gdt_cct_NetworkConnectionInfo_mobile_subtype_default),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_IosClientInfo_fields[8] = {
+    PB_FIELD(  3, BYTES   , OPTIONAL, POINTER , FIRST, gdt_cct_IosClientInfo, os_major_version, os_major_version, 0),
+    PB_FIELD(  4, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, os_full_version, os_major_version, 0),
+    PB_FIELD(  5, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, application_build, os_full_version, 0),
+    PB_FIELD(  6, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, country, application_build, 0),
+    PB_FIELD(  7, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, model, country, 0),
+    PB_FIELD(  8, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, language_code, model, 0),
+    PB_FIELD( 11, BYTES   , OPTIONAL, POINTER , OTHER, gdt_cct_IosClientInfo, application_bundle_id, language_code, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_ClientInfo_fields[3] = {
+    PB_FIELD(  1, UENUM   , OPTIONAL, STATIC  , FIRST, gdt_cct_ClientInfo, client_type, client_type, 0),
+    PB_FIELD(  4, MESSAGE , OPTIONAL, STATIC  , OTHER, gdt_cct_ClientInfo, ios_client_info, client_type, &gdt_cct_IosClientInfo_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_BatchedLogRequest_fields[2] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, gdt_cct_BatchedLogRequest, log_request, log_request, &gdt_cct_LogRequest_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_LogRequest_fields[7] = {
+    PB_FIELD(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, gdt_cct_LogRequest, client_info, client_info, &gdt_cct_ClientInfo_fields),
+    PB_FIELD(  2, INT32   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogRequest, log_source, client_info, 0),
+    PB_FIELD(  3, MESSAGE , REPEATED, POINTER , OTHER, gdt_cct_LogRequest, log_event, log_source, &gdt_cct_LogEvent_fields),
+    PB_FIELD(  4, INT64   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogRequest, request_time_ms, log_event, 0),
+    PB_FIELD(  8, INT64   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogRequest, request_uptime_ms, request_time_ms, 0),
+    PB_FIELD(  9, UENUM   , OPTIONAL, STATIC  , OTHER, gdt_cct_LogRequest, qos_tier, request_uptime_ms, &gdt_cct_LogRequest_qos_tier_default),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_QosTierConfiguration_fields[3] = {
+    PB_FIELD(  2, UENUM   , OPTIONAL, STATIC  , FIRST, gdt_cct_QosTierConfiguration, qos_tier, qos_tier, 0),
+    PB_FIELD(  3, INT32   , OPTIONAL, STATIC  , OTHER, gdt_cct_QosTierConfiguration, log_source, qos_tier, &gdt_cct_QosTierConfiguration_log_source_default),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_QosTiersOverride_fields[3] = {
+    PB_FIELD(  1, MESSAGE , REPEATED, POINTER , FIRST, gdt_cct_QosTiersOverride, qos_tier_configuration, qos_tier_configuration, &gdt_cct_QosTierConfiguration_fields),
+    PB_FIELD(  2, INT64   , OPTIONAL, STATIC  , OTHER, gdt_cct_QosTiersOverride, qos_tier_fingerprint, qos_tier_configuration, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t gdt_cct_LogResponse_fields[3] = {
+    PB_FIELD(  1, INT64   , OPTIONAL, STATIC  , FIRST, gdt_cct_LogResponse, next_request_wait_millis, next_request_wait_millis, 0),
+    PB_FIELD(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, gdt_cct_LogResponse, qos_tier, next_request_wait_millis, &gdt_cct_QosTiersOverride_fields),
+    PB_LAST_FIELD
+};
+
+
+
+
+
+
+/* Check that field information fits in pb_field_t */
+#if !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_32BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ * 
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in 8 or 16 bit
+ * field descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(gdt_cct_LogEvent, network_connection_info) < 65536 && pb_membersize(gdt_cct_ClientInfo, ios_client_info) < 65536 && pb_membersize(gdt_cct_LogRequest, client_info) < 65536 && pb_membersize(gdt_cct_LogResponse, qos_tier) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_gdt_cct_LogEvent_gdt_cct_NetworkConnectionInfo_gdt_cct_IosClientInfo_gdt_cct_ClientInfo_gdt_cct_BatchedLogRequest_gdt_cct_LogRequest_gdt_cct_QosTierConfiguration_gdt_cct_QosTiersOverride_gdt_cct_LogResponse)
+#endif
+
+#if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
+/* If you get an error here, it means that you need to define PB_FIELD_16BIT
+ * compile-time option. You can do that in pb.h or on compiler command line.
+ * 
+ * The reason you need to do this is that some of your messages contain tag
+ * numbers or field sizes that are larger than what can fit in the default
+ * 8 bit descriptors.
+ */
+PB_STATIC_ASSERT((pb_membersize(gdt_cct_LogEvent, network_connection_info) < 256 && pb_membersize(gdt_cct_ClientInfo, ios_client_info) < 256 && pb_membersize(gdt_cct_LogRequest, client_info) < 256 && pb_membersize(gdt_cct_LogResponse, qos_tier) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_gdt_cct_LogEvent_gdt_cct_NetworkConnectionInfo_gdt_cct_IosClientInfo_gdt_cct_ClientInfo_gdt_cct_BatchedLogRequest_gdt_cct_LogRequest_gdt_cct_QosTierConfiguration_gdt_cct_QosTiersOverride_gdt_cct_LogResponse)
+#endif
+
+
+/* @@protoc_insertion_point(eof) */
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h
new file mode 100644
index 0000000..05bdf58
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Protogen/nanopb/cct.nanopb.h	
@@ -0,0 +1,281 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.3.9.7 */
+
+#ifndef PB_GDT_CCT_CCT_NANOPB_H_INCLUDED
+#define PB_GDT_CCT_CCT_NANOPB_H_INCLUDED
+#include <nanopb/pb.h>
+
+/* @@protoc_insertion_point(includes) */
+#if PB_PROTO_HEADER_VERSION != 30
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+
+/* Enum definitions */
+typedef enum _gdt_cct_NetworkConnectionInfo_NetworkType {
+    gdt_cct_NetworkConnectionInfo_NetworkType_NONE = -1,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE = 0,
+    gdt_cct_NetworkConnectionInfo_NetworkType_WIFI = 1,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_MMS = 2,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_SUPL = 3,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_DUN = 4,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_HIPRI = 5,
+    gdt_cct_NetworkConnectionInfo_NetworkType_WIMAX = 6,
+    gdt_cct_NetworkConnectionInfo_NetworkType_BLUETOOTH = 7,
+    gdt_cct_NetworkConnectionInfo_NetworkType_DUMMY = 8,
+    gdt_cct_NetworkConnectionInfo_NetworkType_ETHERNET = 9,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_FOTA = 10,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_IMS = 11,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_CBS = 12,
+    gdt_cct_NetworkConnectionInfo_NetworkType_WIFI_P2P = 13,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_IA = 14,
+    gdt_cct_NetworkConnectionInfo_NetworkType_MOBILE_EMERGENCY = 15,
+    gdt_cct_NetworkConnectionInfo_NetworkType_PROXY = 16,
+    gdt_cct_NetworkConnectionInfo_NetworkType_VPN = 17
+} gdt_cct_NetworkConnectionInfo_NetworkType;
+#define _gdt_cct_NetworkConnectionInfo_NetworkType_MIN gdt_cct_NetworkConnectionInfo_NetworkType_NONE
+#define _gdt_cct_NetworkConnectionInfo_NetworkType_MAX gdt_cct_NetworkConnectionInfo_NetworkType_VPN
+#define _gdt_cct_NetworkConnectionInfo_NetworkType_ARRAYSIZE ((gdt_cct_NetworkConnectionInfo_NetworkType)(gdt_cct_NetworkConnectionInfo_NetworkType_VPN+1))
+
+typedef enum _gdt_cct_NetworkConnectionInfo_MobileSubtype {
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE = 0,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_GPRS = 1,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_EDGE = 2,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_UMTS = 3,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_CDMA = 4,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_0 = 5,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_A = 6,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_RTT = 7,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_HSDPA = 8,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_HSUPA = 9,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_HSPA = 10,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_IDEN = 11,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_EVDO_B = 12,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_LTE = 13,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_EHRPD = 14,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_HSPAP = 15,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_GSM = 16,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_TD_SCDMA = 17,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_IWLAN = 18,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_LTE_CA = 19,
+    gdt_cct_NetworkConnectionInfo_MobileSubtype_COMBINED = 100
+} gdt_cct_NetworkConnectionInfo_MobileSubtype;
+#define _gdt_cct_NetworkConnectionInfo_MobileSubtype_MIN gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE
+#define _gdt_cct_NetworkConnectionInfo_MobileSubtype_MAX gdt_cct_NetworkConnectionInfo_MobileSubtype_COMBINED
+#define _gdt_cct_NetworkConnectionInfo_MobileSubtype_ARRAYSIZE ((gdt_cct_NetworkConnectionInfo_MobileSubtype)(gdt_cct_NetworkConnectionInfo_MobileSubtype_COMBINED+1))
+
+typedef enum _gdt_cct_ClientInfo_ClientType {
+    gdt_cct_ClientInfo_ClientType_CLIENT_UNKNOWN = 0,
+    gdt_cct_ClientInfo_ClientType_IOS_FIREBASE = 15
+} gdt_cct_ClientInfo_ClientType;
+#define _gdt_cct_ClientInfo_ClientType_MIN gdt_cct_ClientInfo_ClientType_CLIENT_UNKNOWN
+#define _gdt_cct_ClientInfo_ClientType_MAX gdt_cct_ClientInfo_ClientType_IOS_FIREBASE
+#define _gdt_cct_ClientInfo_ClientType_ARRAYSIZE ((gdt_cct_ClientInfo_ClientType)(gdt_cct_ClientInfo_ClientType_IOS_FIREBASE+1))
+
+typedef enum _gdt_cct_QosTierConfiguration_QosTier {
+    gdt_cct_QosTierConfiguration_QosTier_DEFAULT = 0,
+    gdt_cct_QosTierConfiguration_QosTier_UNMETERED_ONLY = 1,
+    gdt_cct_QosTierConfiguration_QosTier_UNMETERED_OR_DAILY = 2,
+    gdt_cct_QosTierConfiguration_QosTier_FAST_IF_RADIO_AWAKE = 3,
+    gdt_cct_QosTierConfiguration_QosTier_NEVER = 4
+} gdt_cct_QosTierConfiguration_QosTier;
+#define _gdt_cct_QosTierConfiguration_QosTier_MIN gdt_cct_QosTierConfiguration_QosTier_DEFAULT
+#define _gdt_cct_QosTierConfiguration_QosTier_MAX gdt_cct_QosTierConfiguration_QosTier_NEVER
+#define _gdt_cct_QosTierConfiguration_QosTier_ARRAYSIZE ((gdt_cct_QosTierConfiguration_QosTier)(gdt_cct_QosTierConfiguration_QosTier_NEVER+1))
+
+/* Struct definitions */
+typedef struct _gdt_cct_BatchedLogRequest {
+    pb_size_t log_request_count;
+    struct _gdt_cct_LogRequest *log_request;
+/* @@protoc_insertion_point(struct:gdt_cct_BatchedLogRequest) */
+} gdt_cct_BatchedLogRequest;
+
+typedef struct _gdt_cct_IosClientInfo {
+    pb_bytes_array_t *os_major_version;
+    pb_bytes_array_t *os_full_version;
+    pb_bytes_array_t *application_build;
+    pb_bytes_array_t *country;
+    pb_bytes_array_t *model;
+    pb_bytes_array_t *language_code;
+    pb_bytes_array_t *application_bundle_id;
+/* @@protoc_insertion_point(struct:gdt_cct_IosClientInfo) */
+} gdt_cct_IosClientInfo;
+
+typedef struct _gdt_cct_ClientInfo {
+    bool has_client_type;
+    gdt_cct_ClientInfo_ClientType client_type;
+    bool has_ios_client_info;
+    gdt_cct_IosClientInfo ios_client_info;
+/* @@protoc_insertion_point(struct:gdt_cct_ClientInfo) */
+} gdt_cct_ClientInfo;
+
+typedef struct _gdt_cct_NetworkConnectionInfo {
+    bool has_network_type;
+    gdt_cct_NetworkConnectionInfo_NetworkType network_type;
+    bool has_mobile_subtype;
+    gdt_cct_NetworkConnectionInfo_MobileSubtype mobile_subtype;
+/* @@protoc_insertion_point(struct:gdt_cct_NetworkConnectionInfo) */
+} gdt_cct_NetworkConnectionInfo;
+
+typedef struct _gdt_cct_QosTierConfiguration {
+    bool has_qos_tier;
+    gdt_cct_QosTierConfiguration_QosTier qos_tier;
+    bool has_log_source;
+    int32_t log_source;
+/* @@protoc_insertion_point(struct:gdt_cct_QosTierConfiguration) */
+} gdt_cct_QosTierConfiguration;
+
+typedef struct _gdt_cct_QosTiersOverride {
+    pb_size_t qos_tier_configuration_count;
+    struct _gdt_cct_QosTierConfiguration *qos_tier_configuration;
+    bool has_qos_tier_fingerprint;
+    int64_t qos_tier_fingerprint;
+/* @@protoc_insertion_point(struct:gdt_cct_QosTiersOverride) */
+} gdt_cct_QosTiersOverride;
+
+typedef struct _gdt_cct_LogEvent {
+    bool has_event_time_ms;
+    int64_t event_time_ms;
+    pb_bytes_array_t *source_extension;
+    bool has_event_code;
+    int32_t event_code;
+    bool has_timezone_offset_seconds;
+    int64_t timezone_offset_seconds;
+    bool has_event_uptime_ms;
+    int64_t event_uptime_ms;
+    bool has_network_connection_info;
+    gdt_cct_NetworkConnectionInfo network_connection_info;
+/* @@protoc_insertion_point(struct:gdt_cct_LogEvent) */
+} gdt_cct_LogEvent;
+
+typedef struct _gdt_cct_LogRequest {
+    bool has_client_info;
+    gdt_cct_ClientInfo client_info;
+    bool has_log_source;
+    int32_t log_source;
+    pb_size_t log_event_count;
+    struct _gdt_cct_LogEvent *log_event;
+    bool has_request_time_ms;
+    int64_t request_time_ms;
+    bool has_request_uptime_ms;
+    int64_t request_uptime_ms;
+    bool has_qos_tier;
+    gdt_cct_QosTierConfiguration_QosTier qos_tier;
+/* @@protoc_insertion_point(struct:gdt_cct_LogRequest) */
+} gdt_cct_LogRequest;
+
+typedef struct _gdt_cct_LogResponse {
+    bool has_next_request_wait_millis;
+    int64_t next_request_wait_millis;
+    bool has_qos_tier;
+    gdt_cct_QosTiersOverride qos_tier;
+/* @@protoc_insertion_point(struct:gdt_cct_LogResponse) */
+} gdt_cct_LogResponse;
+
+/* Default values for struct fields */
+extern const gdt_cct_NetworkConnectionInfo_NetworkType gdt_cct_NetworkConnectionInfo_network_type_default;
+extern const gdt_cct_NetworkConnectionInfo_MobileSubtype gdt_cct_NetworkConnectionInfo_mobile_subtype_default;
+extern const gdt_cct_QosTierConfiguration_QosTier gdt_cct_LogRequest_qos_tier_default;
+extern const int32_t gdt_cct_QosTierConfiguration_log_source_default;
+
+/* Initializer values for message structs */
+#define gdt_cct_LogEvent_init_default            {false, 0, NULL, false, 0, false, 0, false, 0, false, gdt_cct_NetworkConnectionInfo_init_default}
+#define gdt_cct_NetworkConnectionInfo_init_default {false, gdt_cct_NetworkConnectionInfo_NetworkType_NONE, false, gdt_cct_NetworkConnectionInfo_MobileSubtype_UNKNOWN_MOBILE_SUBTYPE}
+#define gdt_cct_IosClientInfo_init_default       {NULL, NULL, NULL, NULL, NULL, NULL, NULL}
+#define gdt_cct_ClientInfo_init_default          {false, _gdt_cct_ClientInfo_ClientType_MIN, false, gdt_cct_IosClientInfo_init_default}
+#define gdt_cct_BatchedLogRequest_init_default   {0, NULL}
+#define gdt_cct_LogRequest_init_default          {false, gdt_cct_ClientInfo_init_default, false, 0, 0, NULL, false, 0, false, 0, false, gdt_cct_QosTierConfiguration_QosTier_DEFAULT}
+#define gdt_cct_QosTierConfiguration_init_default {false, _gdt_cct_QosTierConfiguration_QosTier_MIN, false, 0}
+#define gdt_cct_QosTiersOverride_init_default    {0, NULL, false, 0}
+#define gdt_cct_LogResponse_init_default         {false, 0, false, gdt_cct_QosTiersOverride_init_default}
+#define gdt_cct_LogEvent_init_zero               {false, 0, NULL, false, 0, false, 0, false, 0, false, gdt_cct_NetworkConnectionInfo_init_zero}
+#define gdt_cct_NetworkConnectionInfo_init_zero  {false, _gdt_cct_NetworkConnectionInfo_NetworkType_MIN, false, _gdt_cct_NetworkConnectionInfo_MobileSubtype_MIN}
+#define gdt_cct_IosClientInfo_init_zero          {NULL, NULL, NULL, NULL, NULL, NULL, NULL}
+#define gdt_cct_ClientInfo_init_zero             {false, _gdt_cct_ClientInfo_ClientType_MIN, false, gdt_cct_IosClientInfo_init_zero}
+#define gdt_cct_BatchedLogRequest_init_zero      {0, NULL}
+#define gdt_cct_LogRequest_init_zero             {false, gdt_cct_ClientInfo_init_zero, false, 0, 0, NULL, false, 0, false, 0, false, _gdt_cct_QosTierConfiguration_QosTier_MIN}
+#define gdt_cct_QosTierConfiguration_init_zero   {false, _gdt_cct_QosTierConfiguration_QosTier_MIN, false, 0}
+#define gdt_cct_QosTiersOverride_init_zero       {0, NULL, false, 0}
+#define gdt_cct_LogResponse_init_zero            {false, 0, false, gdt_cct_QosTiersOverride_init_zero}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define gdt_cct_BatchedLogRequest_log_request_tag 1
+#define gdt_cct_IosClientInfo_os_major_version_tag 3
+#define gdt_cct_IosClientInfo_os_full_version_tag 4
+#define gdt_cct_IosClientInfo_application_build_tag 5
+#define gdt_cct_IosClientInfo_country_tag        6
+#define gdt_cct_IosClientInfo_model_tag          7
+#define gdt_cct_IosClientInfo_language_code_tag  8
+#define gdt_cct_IosClientInfo_application_bundle_id_tag 11
+#define gdt_cct_ClientInfo_client_type_tag       1
+#define gdt_cct_ClientInfo_ios_client_info_tag   4
+#define gdt_cct_NetworkConnectionInfo_network_type_tag 1
+#define gdt_cct_NetworkConnectionInfo_mobile_subtype_tag 2
+#define gdt_cct_QosTierConfiguration_qos_tier_tag 2
+#define gdt_cct_QosTierConfiguration_log_source_tag 3
+#define gdt_cct_QosTiersOverride_qos_tier_configuration_tag 1
+#define gdt_cct_QosTiersOverride_qos_tier_fingerprint_tag 2
+#define gdt_cct_LogEvent_event_time_ms_tag       1
+#define gdt_cct_LogEvent_event_code_tag          11
+#define gdt_cct_LogEvent_event_uptime_ms_tag     17
+#define gdt_cct_LogEvent_source_extension_tag    6
+#define gdt_cct_LogEvent_timezone_offset_seconds_tag 15
+#define gdt_cct_LogEvent_network_connection_info_tag 23
+#define gdt_cct_LogRequest_request_time_ms_tag   4
+#define gdt_cct_LogRequest_request_uptime_ms_tag 8
+#define gdt_cct_LogRequest_client_info_tag       1
+#define gdt_cct_LogRequest_log_source_tag        2
+#define gdt_cct_LogRequest_log_event_tag         3
+#define gdt_cct_LogRequest_qos_tier_tag          9
+#define gdt_cct_LogResponse_next_request_wait_millis_tag 1
+#define gdt_cct_LogResponse_qos_tier_tag         3
+
+/* Struct field encoding specification for nanopb */
+extern const pb_field_t gdt_cct_LogEvent_fields[7];
+extern const pb_field_t gdt_cct_NetworkConnectionInfo_fields[3];
+extern const pb_field_t gdt_cct_IosClientInfo_fields[8];
+extern const pb_field_t gdt_cct_ClientInfo_fields[3];
+extern const pb_field_t gdt_cct_BatchedLogRequest_fields[2];
+extern const pb_field_t gdt_cct_LogRequest_fields[7];
+extern const pb_field_t gdt_cct_QosTierConfiguration_fields[3];
+extern const pb_field_t gdt_cct_QosTiersOverride_fields[3];
+extern const pb_field_t gdt_cct_LogResponse_fields[3];
+
+/* Maximum encoded size of messages (where known) */
+/* gdt_cct_LogEvent_size depends on runtime parameters */
+#define gdt_cct_NetworkConnectionInfo_size       13
+/* gdt_cct_IosClientInfo_size depends on runtime parameters */
+/* gdt_cct_ClientInfo_size depends on runtime parameters */
+/* gdt_cct_BatchedLogRequest_size depends on runtime parameters */
+/* gdt_cct_LogRequest_size depends on runtime parameters */
+#define gdt_cct_QosTierConfiguration_size        13
+/* gdt_cct_QosTiersOverride_size depends on runtime parameters */
+/* gdt_cct_LogResponse_size depends on runtime parameters */
+
+/* Message IDs (where set with "msgid" option) */
+#ifdef PB_MSGID
+
+#define CCT_MESSAGES \
+
+
+#endif
+
+/* @@protoc_insertion_point(eof) */
+
+#endif
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Public/GDTCOREvent+GDTCCTSupport.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Public/GDTCOREvent+GDTCCTSupport.h
new file mode 100644
index 0000000..295e6f8
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCCTLibrary/Public/GDTCOREvent+GDTCCTSupport.h	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A string sets in customBytes as a key paired to @YES if current event needs to
+ * populate network connection info data, @NO otherwise.
+ */
+FOUNDATION_EXPORT NSString *const GDTCCTNeedsNetworkConnectionInfo;
+
+/** A string sets in customBytes as a key paired to the network connection info data
+ * of current event.
+ */
+FOUNDATION_EXPORT NSString *const GDTCCTNetworkConnectionInfo;
+
+/** A category that uses the customBytes property of a GDTCOREvent to store network connection info.
+ */
+@interface GDTCOREvent (GDTCCTSupport)
+
+/** If YES, needs the network connection info field set during prioritization.
+ * @note Uses the GDTCOREvent customBytes property.
+ */
+@property(nonatomic) BOOL needsNetworkConnectionInfoPopulated;
+
+/** The network connection info as collected at the time of the event.
+ * @note Uses the GDTCOREvent customBytes property.
+ */
+@property(nullable, nonatomic) NSData *networkConnectionInfoData;
+
+/** Code that identifies the event to be sent to the CCT backend.
+ */
+@property(nullable, nonatomic) NSNumber *eventCode;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORAssert.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORAssert.m
new file mode 100644
index 0000000..14462ae
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORAssert.m	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+
+GDTCORAssertionBlock GDTCORAssertionBlockToRunInstead(void) {
+  // This class is only compiled in by unit tests, and this should fail quickly in optimized builds.
+  Class GDTCORAssertClass = NSClassFromString(@"GDTCORAssertHelper");
+  if (__builtin_expect(!!GDTCORAssertClass, 0)) {
+    SEL assertionBlockSEL = NSSelectorFromString(@"assertionBlock");
+    if (assertionBlockSEL) {
+      IMP assertionBlockIMP = [GDTCORAssertClass methodForSelector:assertionBlockSEL];
+      if (assertionBlockIMP) {
+        GDTCORAssertionBlock assertionBlock = ((GDTCORAssertionBlock(*)(id, SEL))assertionBlockIMP)(
+            GDTCORAssertClass, assertionBlockSEL);
+        if (assertionBlock) {
+          return assertionBlock;
+        }
+      }
+    }
+  }
+  return NULL;
+}
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORClock.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORClock.m
new file mode 100644
index 0000000..85afeba
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORClock.m	
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+
+#import <sys/sysctl.h>
+
+// Using a monotonic clock is necessary because CFAbsoluteTimeGetCurrent(), NSDate, and related all
+// are subject to drift. That it to say, multiple consecutive calls do not always result in a
+// time that is in the future. Clocks may be adjusted by the user, NTP, or any number of external
+// factors. This class attempts to determine the wall-clock time at the time of the event by
+// capturing the kernel start and time since boot to determine a wallclock time in UTC.
+//
+// Timezone offsets at the time of a snapshot are also captured in order to provide local-time
+// details. Other classes in this library depend on comparing times at some time in the future to
+// a time captured in the past, and this class needs to provide a mechanism to do that.
+//
+// TL;DR: This class attempts to accomplish two things: 1. Provide accurate event times. 2. Provide
+// a monotonic clock mechanism to accurately check if some clock snapshot was before or after
+// by using a shared reference point (kernel boot time).
+//
+// Note: Much of the mach time stuff doesn't work properly in the simulator. So this class can be
+// difficult to unit test.
+
+/** Returns the kernel boottime property from sysctl.
+ *
+ * Inspired by https://stackoverflow.com/a/40497811
+ *
+ * @return The KERN_BOOTTIME property from sysctl, in nanoseconds.
+ */
+static int64_t KernelBootTimeInNanoseconds() {
+  // Caching the result is not possible because clock drift would not be accounted for.
+  struct timeval boottime;
+  int mib[2] = {CTL_KERN, KERN_BOOTTIME};
+  size_t size = sizeof(boottime);
+  int rc = sysctl(mib, 2, &boottime, &size, NULL, 0);
+  if (rc != 0) {
+    return 0;
+  }
+  return (int64_t)boottime.tv_sec * NSEC_PER_SEC + (int64_t)boottime.tv_usec * NSEC_PER_USEC;
+}
+
+/** Returns value of gettimeofday, in nanoseconds.
+ *
+ * Inspired by https://stackoverflow.com/a/40497811
+ *
+ * @return The value of gettimeofday, in nanoseconds.
+ */
+static int64_t UptimeInNanoseconds() {
+  int64_t before_now_nsec;
+  int64_t after_now_nsec;
+  struct timeval now;
+
+  before_now_nsec = KernelBootTimeInNanoseconds();
+  // Addresses a race condition in which the system time has updated, but the boottime has not.
+  do {
+    gettimeofday(&now, NULL);
+    after_now_nsec = KernelBootTimeInNanoseconds();
+  } while (after_now_nsec != before_now_nsec);
+  return (int64_t)now.tv_sec * NSEC_PER_SEC + (int64_t)now.tv_usec * NSEC_PER_USEC -
+         before_now_nsec;
+}
+
+// TODO: Consider adding a 'trustedTime' property that can be populated by the response from a BE.
+@implementation GDTCORClock
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _kernelBootTimeNanoseconds = KernelBootTimeInNanoseconds();
+    _uptimeNanoseconds = UptimeInNanoseconds();
+    _timeMillis =
+        (int64_t)((CFAbsoluteTimeGetCurrent() + kCFAbsoluteTimeIntervalSince1970) * NSEC_PER_USEC);
+    _timezoneOffsetSeconds = [[NSTimeZone systemTimeZone] secondsFromGMT];
+  }
+  return self;
+}
+
++ (GDTCORClock *)snapshot {
+  return [[GDTCORClock alloc] init];
+}
+
++ (instancetype)clockSnapshotInTheFuture:(uint64_t)millisInTheFuture {
+  GDTCORClock *snapshot = [self snapshot];
+  snapshot->_timeMillis += millisInTheFuture;
+  return snapshot;
+}
+
+- (BOOL)isAfter:(GDTCORClock *)otherClock {
+  // These clocks are trivially comparable when they share a kernel boot time.
+  if (_kernelBootTimeNanoseconds == otherClock->_kernelBootTimeNanoseconds) {
+    int64_t timeDiff = (_timeMillis + _timezoneOffsetSeconds) -
+                       (otherClock->_timeMillis + otherClock->_timezoneOffsetSeconds);
+    return timeDiff > 0;
+  } else {
+    int64_t kernelBootTimeDiff =
+        otherClock->_kernelBootTimeNanoseconds - _kernelBootTimeNanoseconds;
+    // This isn't a great solution, but essentially, if the other clock's boot time is 'later', NO
+    // is returned. This can be altered by changing the system time and rebooting.
+    return kernelBootTimeDiff < 0 ? YES : NO;
+  }
+}
+
+- (int64_t)uptimeMilliseconds {
+  return self.uptimeNanoseconds / NSEC_PER_MSEC;
+}
+
+- (NSUInteger)hash {
+  return [@(_kernelBootTimeNanoseconds) hash] ^ [@(_uptimeNanoseconds) hash] ^
+         [@(_timeMillis) hash] ^ [@(_timezoneOffsetSeconds) hash];
+}
+
+- (BOOL)isEqual:(id)object {
+  return [self hash] == [object hash];
+}
+
+#pragma mark - NSSecureCoding
+
+/** NSKeyedCoder key for timeMillis property. */
+static NSString *const kGDTCORClockTimeMillisKey = @"GDTCORClockTimeMillis";
+
+/** NSKeyedCoder key for timezoneOffsetMillis property. */
+static NSString *const kGDTCORClockTimezoneOffsetSeconds = @"GDTCORClockTimezoneOffsetSeconds";
+
+/** NSKeyedCoder key for _kernelBootTime ivar. */
+static NSString *const kGDTCORClockKernelBootTime = @"GDTCORClockKernelBootTime";
+
+/** NSKeyedCoder key for _uptimeNanoseconds ivar. */
+static NSString *const kGDTCORClockUptime = @"GDTCORClockUptime";
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)aDecoder {
+  self = [super init];
+  if (self) {
+    // TODO: If the kernelBootTimeNanoseconds is more recent, we need to change the kernel boot time
+    // and uptimeMillis ivars
+    _timeMillis = [aDecoder decodeInt64ForKey:kGDTCORClockTimeMillisKey];
+    _timezoneOffsetSeconds = [aDecoder decodeInt64ForKey:kGDTCORClockTimezoneOffsetSeconds];
+    _kernelBootTimeNanoseconds = [aDecoder decodeInt64ForKey:kGDTCORClockKernelBootTime];
+    _uptimeNanoseconds = [aDecoder decodeInt64ForKey:kGDTCORClockUptime];
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeInt64:_timeMillis forKey:kGDTCORClockTimeMillisKey];
+  [aCoder encodeInt64:_timezoneOffsetSeconds forKey:kGDTCORClockTimezoneOffsetSeconds];
+  [aCoder encodeInt64:_kernelBootTimeNanoseconds forKey:kGDTCORClockKernelBootTime];
+  [aCoder encodeInt64:_uptimeNanoseconds forKey:kGDTCORClockUptime];
+}
+
+#pragma mark - Deprecated properties
+
+- (int64_t)kernelBootTime {
+  return self.kernelBootTimeNanoseconds;
+}
+
+- (int64_t)uptime {
+  return self.uptimeNanoseconds;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORConsoleLogger.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORConsoleLogger.m
new file mode 100644
index 0000000..5eaee92
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORConsoleLogger.m	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+volatile NSInteger GDTCORConsoleLoggerLoggingLevel = GDTCORLoggingLevelErrors;
+
+/** The console logger prefix. */
+static NSString *kGDTCORConsoleLogger = @"[GoogleDataTransport]";
+
+NSString *GDTCORMessageCodeEnumToString(GDTCORMessageCode code) {
+  return [[NSString alloc] initWithFormat:@"I-GDTCOR%06ld", (long)code];
+}
+
+void GDTCORLog(GDTCORMessageCode code, GDTCORLoggingLevel logLevel, NSString *format, ...) {
+// Don't log anything in not debug builds.
+#if !NDEBUG
+  if (logLevel >= GDTCORConsoleLoggerLoggingLevel) {
+    NSString *logFormat = [NSString stringWithFormat:@"%@[%@] %@", kGDTCORConsoleLogger,
+                                                     GDTCORMessageCodeEnumToString(code), format];
+    va_list args;
+    va_start(args, format);
+    NSLogv(logFormat, args);
+    va_end(args);
+  }
+#endif  // !NDEBUG
+}
+
+void GDTCORLogAssert(
+    BOOL wasFatal, NSString *_Nonnull file, NSInteger line, NSString *_Nullable format, ...) {
+// Don't log anything in not debug builds.
+#if !NDEBUG
+  GDTCORMessageCode code = wasFatal ? GDTCORMCEFatalAssertion : GDTCORMCEGeneralError;
+  NSString *logFormat =
+      [NSString stringWithFormat:@"%@[%@] (%@:%ld) : %@", kGDTCORConsoleLogger,
+                                 GDTCORMessageCodeEnumToString(code), file, (long)line, format];
+  va_list args;
+  va_start(args, format);
+  NSLogv(logFormat, args);
+  va_end(args);
+#endif  // !NDEBUG
+}
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORDirectorySizeTracker.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORDirectorySizeTracker.m
new file mode 100644
index 0000000..0bc8515
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORDirectorySizeTracker.m	
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORDirectorySizeTracker.h"
+
+@interface GDTCORDirectorySizeTracker ()
+
+/** The observed directory path. */
+@property(nonatomic, readonly) NSString *directoryPath;
+
+/** The cached content size of the observed directory. */
+@property(nonatomic, nullable) NSNumber *cachedSizeBytes;
+
+@end
+
+@implementation GDTCORDirectorySizeTracker
+
+- (instancetype)initWithDirectoryPath:(NSString *)path {
+  self = [super init];
+  if (self) {
+    _directoryPath = path;
+  }
+  return self;
+}
+
+- (GDTCORStorageSizeBytes)directoryContentSize {
+  if (self.cachedSizeBytes == nil) {
+    self.cachedSizeBytes = @([self calculateDirectoryContentSize]);
+  }
+
+  return self.cachedSizeBytes.unsignedLongLongValue;
+}
+
+- (void)fileWasAddedAtPath:(NSString *)path withSize:(GDTCORStorageSizeBytes)fileSize {
+  if (![path hasPrefix:self.directoryPath]) {
+    // Ignore because the file is not inside the directory.
+    return;
+  }
+
+  self.cachedSizeBytes = @([self directoryContentSize] + fileSize);
+}
+
+- (void)fileWasRemovedAtPath:(NSString *)path withSize:(GDTCORStorageSizeBytes)fileSize {
+  if (![path hasPrefix:self.directoryPath]) {
+    // Ignore because the file is not inside the directory.
+    return;
+  }
+
+  self.cachedSizeBytes = @([self directoryContentSize] - fileSize);
+}
+
+- (void)resetCachedSize {
+  self.cachedSizeBytes = nil;
+}
+
+- (GDTCORStorageSizeBytes)calculateDirectoryContentSize {
+  NSArray *prefetchedProperties = @[ NSURLIsRegularFileKey, NSURLFileSizeKey ];
+  uint64_t totalBytes = 0;
+  NSURL *directoryURL = [NSURL fileURLWithPath:self.directoryPath];
+
+  NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager]
+                 enumeratorAtURL:directoryURL
+      includingPropertiesForKeys:prefetchedProperties
+                         options:NSDirectoryEnumerationSkipsHiddenFiles
+                    errorHandler:^BOOL(NSURL *_Nonnull url, NSError *_Nonnull error) {
+                      return YES;
+                    }];
+
+  for (NSURL *fileURL in enumerator) {
+    @autoreleasepool {
+      NSNumber *isRegularFile;
+      [fileURL getResourceValue:&isRegularFile forKey:NSURLIsRegularFileKey error:nil];
+      if (isRegularFile.boolValue) {
+        totalBytes += [self fileSizeAtURL:fileURL];
+      }
+    }
+  }
+
+  return totalBytes;
+}
+
+- (GDTCORStorageSizeBytes)fileSizeAtURL:(NSURL *)fileURL {
+  NSNumber *fileSize;
+  [fileURL getResourceValue:&fileSize forKey:NSURLFileSizeKey error:nil];
+  return fileSize.unsignedLongLongValue;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREndpoints.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREndpoints.m
new file mode 100644
index 0000000..eacc7b4
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREndpoints.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h"
+
+static NSString *const kINTServerURL =
+    @"https://dummyapiverylong-dummy.dummy.com/dummy/api/very/long";
+
+@implementation GDTCOREndpoints
+
++ (NSDictionary<NSNumber *, NSURL *> *)uploadURLs {
+  // These strings should be interleaved to construct the real URL. This is just to (hopefully)
+  // fool github URL scanning bots.
+  static NSURL *CCTServerURL;
+  static dispatch_once_t CCTOnceToken;
+  dispatch_once(&CCTOnceToken, ^{
+    const char *p1 = "hts/frbslgiggolai.o/0clgbth";
+    const char *p2 = "tp:/ieaeogn.ogepscmvc/o/ac";
+    const char URL[54] = {p1[0],  p2[0],  p1[1],  p2[1],  p1[2],  p2[2],  p1[3],  p2[3],  p1[4],
+                          p2[4],  p1[5],  p2[5],  p1[6],  p2[6],  p1[7],  p2[7],  p1[8],  p2[8],
+                          p1[9],  p2[9],  p1[10], p2[10], p1[11], p2[11], p1[12], p2[12], p1[13],
+                          p2[13], p1[14], p2[14], p1[15], p2[15], p1[16], p2[16], p1[17], p2[17],
+                          p1[18], p2[18], p1[19], p2[19], p1[20], p2[20], p1[21], p2[21], p1[22],
+                          p2[22], p1[23], p2[23], p1[24], p2[24], p1[25], p2[25], p1[26], '\0'};
+    CCTServerURL = [NSURL URLWithString:[NSString stringWithUTF8String:URL]];
+  });
+
+  static NSURL *FLLServerURL;
+  static dispatch_once_t FLLOnceToken;
+  dispatch_once(&FLLOnceToken, ^{
+    const char *p1 = "hts/frbslgigp.ogepscmv/ieo/eaybtho";
+    const char *p2 = "tp:/ieaeogn-agolai.o/1frlglgc/aclg";
+    const char URL[69] = {p1[0],  p2[0],  p1[1],  p2[1],  p1[2],  p2[2],  p1[3],  p2[3],  p1[4],
+                          p2[4],  p1[5],  p2[5],  p1[6],  p2[6],  p1[7],  p2[7],  p1[8],  p2[8],
+                          p1[9],  p2[9],  p1[10], p2[10], p1[11], p2[11], p1[12], p2[12], p1[13],
+                          p2[13], p1[14], p2[14], p1[15], p2[15], p1[16], p2[16], p1[17], p2[17],
+                          p1[18], p2[18], p1[19], p2[19], p1[20], p2[20], p1[21], p2[21], p1[22],
+                          p2[22], p1[23], p2[23], p1[24], p2[24], p1[25], p2[25], p1[26], p2[26],
+                          p1[27], p2[27], p1[28], p2[28], p1[29], p2[29], p1[30], p2[30], p1[31],
+                          p2[31], p1[32], p2[32], p1[33], p2[33], '\0'};
+    FLLServerURL = [NSURL URLWithString:[NSString stringWithUTF8String:URL]];
+  });
+
+  static NSURL *CSHServerURL;
+  static dispatch_once_t CSHOnceToken;
+  dispatch_once(&CSHOnceToken, ^{
+    // These strings should be interleaved to construct the real URL. This is just to (hopefully)
+    // fool github URL scanning bots.
+    const char *p1 = "hts/cahyiseot-agolai.o/1frlglgc/aclg";
+    const char *p2 = "tp:/rsltcrprsp.ogepscmv/ieo/eaybtho";
+    const char URL[72] = {p1[0],  p2[0],  p1[1],  p2[1],  p1[2],  p2[2],  p1[3],  p2[3],  p1[4],
+                          p2[4],  p1[5],  p2[5],  p1[6],  p2[6],  p1[7],  p2[7],  p1[8],  p2[8],
+                          p1[9],  p2[9],  p1[10], p2[10], p1[11], p2[11], p1[12], p2[12], p1[13],
+                          p2[13], p1[14], p2[14], p1[15], p2[15], p1[16], p2[16], p1[17], p2[17],
+                          p1[18], p2[18], p1[19], p2[19], p1[20], p2[20], p1[21], p2[21], p1[22],
+                          p2[22], p1[23], p2[23], p1[24], p2[24], p1[25], p2[25], p1[26], p2[26],
+                          p1[27], p2[27], p1[28], p2[28], p1[29], p2[29], p1[30], p2[30], p1[31],
+                          p2[31], p1[32], p2[32], p1[33], p2[33], p1[34], p2[34], p1[35], '\0'};
+    CSHServerURL = [NSURL URLWithString:[NSString stringWithUTF8String:URL]];
+  });
+  static NSDictionary<NSNumber *, NSURL *> *uploadURLs;
+  static dispatch_once_t URLOnceToken;
+  dispatch_once(&URLOnceToken, ^{
+    uploadURLs = @{
+      @(kGDTCORTargetCCT) : CCTServerURL,
+      @(kGDTCORTargetFLL) : FLLServerURL,
+      @(kGDTCORTargetCSH) : CSHServerURL,
+      @(kGDTCORTargetINT) : [NSURL URLWithString:kINTServerURL]
+    };
+  });
+  return uploadURLs;
+}
+
++ (nullable NSURL *)uploadURLForTarget:(GDTCORTarget)target {
+  NSDictionary<NSNumber *, NSURL *> *URLs = [self uploadURLs];
+  return [URLs objectForKey:@(target)];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREvent.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREvent.m
new file mode 100644
index 0000000..5a8d324
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCOREvent.m	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h"
+
+@implementation GDTCOREvent
+
++ (NSString *)nextEventID {
+  // Replace special non-alphanumeric characters to avoid potential conflicts with storage logic.
+  return [[NSUUID UUID].UUIDString stringByReplacingOccurrencesOfString:@"-" withString:@""];
+}
+
+- (nullable instancetype)initWithMappingID:(NSString *)mappingID target:(GDTCORTarget)target {
+  GDTCORAssert(mappingID.length > 0, @"Please give a valid mapping ID");
+  GDTCORAssert(target > 0, @"A target cannot be negative or 0");
+  if (mappingID.length == 0 || target <= 0) {
+    return nil;
+  }
+  self = [super init];
+  if (self) {
+    _eventID = [GDTCOREvent nextEventID];
+    _mappingID = mappingID;
+    _target = target;
+    _qosTier = GDTCOREventQosDefault;
+    _expirationDate = [NSDate dateWithTimeIntervalSinceNow:604800];  // 7 days.
+
+    GDTCORLogDebug(@"Event %@ created. ID:%@ mappingID: %@ target:%ld", self, _eventID, mappingID,
+                   (long)target);
+  }
+
+  return self;
+}
+
+- (instancetype)copy {
+  GDTCOREvent *copy = [[GDTCOREvent alloc] initWithMappingID:_mappingID target:_target];
+  copy->_eventID = _eventID;
+  copy.dataObject = _dataObject;
+  copy.qosTier = _qosTier;
+  copy.clockSnapshot = _clockSnapshot;
+  copy.customBytes = _customBytes;
+  GDTCORLogDebug(@"Copying event %@ to event %@", self, copy);
+  return copy;
+}
+
+- (NSUInteger)hash {
+  // This loses some precision, but it's probably fine.
+  NSUInteger eventIDHash = [_eventID hash];
+  NSUInteger mappingIDHash = [_mappingID hash];
+  NSUInteger timeHash = [_clockSnapshot hash];
+  NSInteger serializedBytesHash = [_serializedDataObjectBytes hash];
+
+  return eventIDHash ^ mappingIDHash ^ _target ^ _qosTier ^ timeHash ^ serializedBytesHash;
+}
+
+- (BOOL)isEqual:(id)object {
+  return [self hash] == [object hash];
+}
+
+#pragma mark - Property overrides
+
+- (void)setDataObject:(id<GDTCOREventDataObject>)dataObject {
+  // If you're looking here because of a performance issue in -transportBytes slowing the assignment
+  // of -dataObject, one way to address this is to add a queue to this class,
+  // dispatch_(barrier_ if concurrent)async here, and implement the getter with a dispatch_sync.
+  if (dataObject != _dataObject) {
+    _dataObject = dataObject;
+  }
+  self->_serializedDataObjectBytes = [dataObject transportBytes];
+}
+
+#pragma mark - NSSecureCoding and NSCoding Protocols
+
+/** NSCoding key for eventID property. */
+static NSString *kEventIDKey = @"GDTCOREventEventIDKey";
+
+/** NSCoding key for mappingID property. */
+static NSString *kMappingIDKey = @"GDTCOREventMappingIDKey";
+
+/** NSCoding key for target property. */
+static NSString *kTargetKey = @"GDTCOREventTargetKey";
+
+/** NSCoding key for qosTier property. */
+static NSString *kQoSTierKey = @"GDTCOREventQoSTierKey";
+
+/** NSCoding key for clockSnapshot property. */
+static NSString *kClockSnapshotKey = @"GDTCOREventClockSnapshotKey";
+
+/** NSCoding key for expirationDate property. */
+static NSString *kExpirationDateKey = @"GDTCOREventExpirationDateKey";
+
+/** NSCoding key for serializedDataObjectBytes property. */
+static NSString *kSerializedDataObjectBytes = @"GDTCOREventSerializedDataObjectBytesKey";
+
+/** NSCoding key for customData property. */
+static NSString *kCustomDataKey = @"GDTCOREventCustomDataKey";
+
++ (BOOL)supportsSecureCoding {
+  return YES;
+}
+
+- (id)initWithCoder:(NSCoder *)aDecoder {
+  self = [self init];
+  if (self) {
+    _mappingID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kMappingIDKey];
+    _target = [aDecoder decodeIntegerForKey:kTargetKey];
+    _eventID = [aDecoder decodeObjectOfClass:[NSString class] forKey:kEventIDKey]
+                   ?: [GDTCOREvent nextEventID];
+    _qosTier = [aDecoder decodeIntegerForKey:kQoSTierKey];
+    _clockSnapshot = [aDecoder decodeObjectOfClass:[GDTCORClock class] forKey:kClockSnapshotKey];
+    _customBytes = [aDecoder decodeObjectOfClass:[NSData class] forKey:kCustomDataKey];
+    _expirationDate = [aDecoder decodeObjectOfClass:[NSDate class] forKey:kExpirationDateKey];
+    _serializedDataObjectBytes = [aDecoder decodeObjectOfClass:[NSData class]
+                                                        forKey:kSerializedDataObjectBytes];
+    if (!_serializedDataObjectBytes) {
+      return nil;
+    }
+  }
+  return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)aCoder {
+  [aCoder encodeObject:_eventID forKey:kEventIDKey];
+  [aCoder encodeObject:_mappingID forKey:kMappingIDKey];
+  [aCoder encodeInteger:_target forKey:kTargetKey];
+  [aCoder encodeInteger:_qosTier forKey:kQoSTierKey];
+  [aCoder encodeObject:_clockSnapshot forKey:kClockSnapshotKey];
+  [aCoder encodeObject:_customBytes forKey:kCustomDataKey];
+  [aCoder encodeObject:_expirationDate forKey:kExpirationDateKey];
+  [aCoder encodeObject:self.serializedDataObjectBytes forKey:kSerializedDataObjectBytes];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage+Promises.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage+Promises.m
new file mode 100644
index 0000000..c3a22a8
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage+Promises.m	
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage+Promises.h"
+
+#if __has_include(<FBLPromises/FBLPromises.h>)
+#import <FBLPromises/FBLPromises.h>
+#else
+#import "FBLPromises.h"
+#endif
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h"
+
+@implementation GDTCORFlatFileStorage (Promises)
+
+- (FBLPromise<NSSet<NSNumber *> *> *)batchIDsForTarget:(GDTCORTarget)target {
+  return [FBLPromise onQueue:self.storageQueue
+        wrapObjectCompletion:^(FBLPromiseObjectCompletion _Nonnull handler) {
+          [self batchIDsForTarget:target onComplete:handler];
+        }];
+}
+
+- (FBLPromise<NSNull *> *)removeBatchWithID:(NSNumber *)batchID deleteEvents:(BOOL)deleteEvents {
+  return [FBLPromise onQueue:self.storageQueue
+              wrapCompletion:^(FBLPromiseCompletion _Nonnull handler) {
+                [self removeBatchWithID:batchID deleteEvents:deleteEvents onComplete:handler];
+              }];
+}
+
+- (FBLPromise<NSNull *> *)removeBatchesWithIDs:(NSSet<NSNumber *> *)batchIDs
+                                  deleteEvents:(BOOL)deleteEvents {
+  NSMutableArray<FBLPromise *> *removeBatchPromises =
+      [NSMutableArray arrayWithCapacity:batchIDs.count];
+  for (NSNumber *batchID in batchIDs) {
+    [removeBatchPromises addObject:[self removeBatchWithID:batchID deleteEvents:deleteEvents]];
+  }
+
+  return [FBLPromise onQueue:self.storageQueue all:[removeBatchPromises copy]].thenOn(
+      self.storageQueue, ^id(id result) {
+        return [FBLPromise resolvedWith:[NSNull null]];
+      });
+}
+
+- (FBLPromise<NSNull *> *)removeAllBatchesForTarget:(GDTCORTarget)target
+                                       deleteEvents:(BOOL)deleteEvents {
+  return
+      [self batchIDsForTarget:target].thenOn(self.storageQueue, ^id(NSSet<NSNumber *> *batchIDs) {
+        if (batchIDs.count == 0) {
+          return [FBLPromise resolvedWith:[NSNull null]];
+        } else {
+          return [self removeBatchesWithIDs:batchIDs deleteEvents:NO];
+        }
+      });
+}
+
+- (FBLPromise<NSNumber *> *)hasEventsForTarget:(GDTCORTarget)target {
+  return [FBLPromise onQueue:self.storageQueue
+          wrapBoolCompletion:^(FBLPromiseBoolCompletion _Nonnull handler) {
+            [self hasEventsForTarget:target onComplete:handler];
+          }];
+}
+
+- (FBLPromise<GDTCORUploadBatch *> *)batchWithEventSelector:
+                                         (GDTCORStorageEventSelector *)eventSelector
+                                            batchExpiration:(NSDate *)expiration {
+  return [FBLPromise
+      onQueue:self.storageQueue
+        async:^(FBLPromiseFulfillBlock _Nonnull fulfill, FBLPromiseRejectBlock _Nonnull reject) {
+          [self batchWithEventSelector:eventSelector
+                       batchExpiration:expiration
+                            onComplete:^(NSNumber *_Nullable newBatchID,
+                                         NSSet<GDTCOREvent *> *_Nullable batchEvents) {
+                              if (newBatchID == nil || batchEvents == nil) {
+                                reject([self genericRejectedPromiseErrorWithReason:
+                                                 @"There are no events for the selector."]);
+                              } else {
+                                fulfill([[GDTCORUploadBatch alloc] initWithBatchID:newBatchID
+                                                                            events:batchEvents]);
+                              }
+                            }];
+        }];
+}
+
+// TODO: Move to a separate class/extension when needed in more places.
+- (NSError *)genericRejectedPromiseErrorWithReason:(NSString *)reason {
+  return [NSError errorWithDomain:@"GDTCORFlatFileStorage"
+                             code:-1
+                         userInfo:@{NSLocalizedFailureReasonErrorKey : reason}];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage.m
new file mode 100644
index 0000000..6e326d8
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage.m	
@@ -0,0 +1,826 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORDirectorySizeTracker.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A library data key this class uses to track batchIDs. */
+static NSString *const gBatchIDCounterKey = @"GDTCORFlatFileStorageBatchIDCounter";
+
+/** The separator used between metadata elements in filenames. */
+static NSString *const kMetadataSeparator = @"-";
+
+NSString *const kGDTCOREventComponentsEventIDKey = @"GDTCOREventComponentsEventIDKey";
+
+NSString *const kGDTCOREventComponentsQoSTierKey = @"GDTCOREventComponentsQoSTierKey";
+
+NSString *const kGDTCOREventComponentsMappingIDKey = @"GDTCOREventComponentsMappingIDKey";
+
+NSString *const kGDTCOREventComponentsExpirationKey = @"GDTCOREventComponentsExpirationKey";
+
+NSString *const kGDTCORBatchComponentsTargetKey = @"GDTCORBatchComponentsTargetKey";
+
+NSString *const kGDTCORBatchComponentsBatchIDKey = @"GDTCORBatchComponentsBatchIDKey";
+
+NSString *const kGDTCORBatchComponentsExpirationKey = @"GDTCORBatchComponentsExpirationKey";
+
+NSString *const GDTCORFlatFileStorageErrorDomain = @"GDTCORFlatFileStorage";
+
+const uint64_t kGDTCORFlatFileStorageSizeLimit = 20 * 1000 * 1000;  // 20 MB.
+
+@interface GDTCORFlatFileStorage ()
+
+/** An instance of the size tracker to keep track of the disk space consumed by the storage. */
+@property(nonatomic, readonly) GDTCORDirectorySizeTracker *sizeTracker;
+
+@end
+
+@implementation GDTCORFlatFileStorage
+
+@synthesize sizeTracker = _sizeTracker;
+
++ (void)load {
+#if !NDEBUG
+  [[GDTCORRegistrar sharedInstance] registerStorage:[self sharedInstance] target:kGDTCORTargetTest];
+#endif  // !NDEBUG
+  [[GDTCORRegistrar sharedInstance] registerStorage:[self sharedInstance] target:kGDTCORTargetCCT];
+  [[GDTCORRegistrar sharedInstance] registerStorage:[self sharedInstance] target:kGDTCORTargetFLL];
+  [[GDTCORRegistrar sharedInstance] registerStorage:[self sharedInstance] target:kGDTCORTargetCSH];
+  [[GDTCORRegistrar sharedInstance] registerStorage:[self sharedInstance] target:kGDTCORTargetINT];
+}
+
++ (instancetype)sharedInstance {
+  static GDTCORFlatFileStorage *sharedStorage;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedStorage = [[GDTCORFlatFileStorage alloc] init];
+  });
+  return sharedStorage;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _storageQueue =
+        dispatch_queue_create("com.google.GDTCORFlatFileStorage", DISPATCH_QUEUE_SERIAL);
+    _uploadCoordinator = [GDTCORUploadCoordinator sharedInstance];
+  }
+  return self;
+}
+
+- (GDTCORDirectorySizeTracker *)sizeTracker {
+  if (_sizeTracker == nil) {
+    _sizeTracker =
+        [[GDTCORDirectorySizeTracker alloc] initWithDirectoryPath:GDTCORRootDirectory().path];
+  }
+  return _sizeTracker;
+}
+
+#pragma mark - GDTCORStorageProtocol
+
+- (void)storeEvent:(GDTCOREvent *)event
+        onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion {
+  GDTCORLogDebug(@"Saving event: %@", event);
+  if (event == nil || event.serializedDataObjectBytes == nil) {
+    GDTCORLogDebug(@"%@", @"The event was nil, so it was not saved.");
+    if (completion) {
+      completion(NO, [NSError errorWithDomain:NSInternalInconsistencyException
+                                         code:-1
+                                     userInfo:nil]);
+    }
+    return;
+  }
+  if (!completion) {
+    completion = ^(BOOL wasWritten, NSError *_Nullable error) {
+      GDTCORLogDebug(@"event %@ stored. success:%@ error:%@", event, wasWritten ? @"YES" : @"NO",
+                     error);
+    };
+  }
+
+  __block GDTCORBackgroundIdentifier bgID = GDTCORBackgroundIdentifierInvalid;
+  bgID = [[GDTCORApplication sharedApplication]
+      beginBackgroundTaskWithName:@"GDTStorage"
+                expirationHandler:^{
+                  // End the background task if it's still valid.
+                  [[GDTCORApplication sharedApplication] endBackgroundTask:bgID];
+                  bgID = GDTCORBackgroundIdentifierInvalid;
+                }];
+
+  dispatch_async(_storageQueue, ^{
+    // Check that a backend implementation is available for this target.
+    GDTCORTarget target = event.target;
+    NSString *filePath = [GDTCORFlatFileStorage pathForTarget:target
+                                                      eventID:event.eventID
+                                                      qosTier:@(event.qosTier)
+                                               expirationDate:event.expirationDate
+                                                    mappingID:event.mappingID];
+    NSError *error;
+    NSData *encodedEvent = GDTCOREncodeArchive(event, nil, &error);
+    if (error) {
+      completion(NO, error);
+      return;
+    }
+
+    // Check storage size limit before storing the event.
+    uint64_t resultingStorageSize = self.sizeTracker.directoryContentSize + encodedEvent.length;
+    if (resultingStorageSize > kGDTCORFlatFileStorageSizeLimit) {
+      NSError *error = [NSError
+          errorWithDomain:GDTCORFlatFileStorageErrorDomain
+                     code:GDTCORFlatFileStorageErrorSizeLimitReached
+                 userInfo:@{
+                   NSLocalizedFailureReasonErrorKey : @"Storage size limit has been reached."
+                 }];
+      completion(NO, error);
+      return;
+    }
+
+    // Write the encoded event to the file.
+    BOOL writeResult = GDTCORWriteDataToFile(encodedEvent, filePath, &error);
+    if (writeResult == NO || error) {
+      GDTCORLogDebug(@"Attempt to write archive failed: path:%@ error:%@", filePath, error);
+      completion(NO, error);
+      return;
+    } else {
+      GDTCORLogDebug(@"Writing archive succeeded: %@", filePath);
+      completion(YES, nil);
+    }
+
+    // Notify size tracker.
+    [self.sizeTracker fileWasAddedAtPath:filePath withSize:encodedEvent.length];
+
+    // Check the QoS, if it's high priority, notify the target that it has a high priority event.
+    if (event.qosTier == GDTCOREventQoSFast) {
+      // TODO: Remove a direct dependency on the upload coordinator.
+      [self.uploadCoordinator forceUploadForTarget:target];
+    }
+
+    // Cancel or end the associated background task if it's still valid.
+    [[GDTCORApplication sharedApplication] endBackgroundTask:bgID];
+    bgID = GDTCORBackgroundIdentifierInvalid;
+  });
+}
+
+- (void)batchWithEventSelector:(nonnull GDTCORStorageEventSelector *)eventSelector
+               batchExpiration:(nonnull NSDate *)expiration
+                    onComplete:
+                        (nonnull void (^)(NSNumber *_Nullable batchID,
+                                          NSSet<GDTCOREvent *> *_Nullable events))onComplete {
+  dispatch_queue_t queue = _storageQueue;
+  void (^onPathsForTargetComplete)(NSNumber *, NSSet<NSString *> *_Nonnull) = ^(
+      NSNumber *batchID, NSSet<NSString *> *_Nonnull paths) {
+    dispatch_async(queue, ^{
+      NSMutableSet<GDTCOREvent *> *events = [[NSMutableSet alloc] init];
+      for (NSString *eventPath in paths) {
+        NSError *error;
+        GDTCOREvent *event =
+            (GDTCOREvent *)GDTCORDecodeArchive([GDTCOREvent class], eventPath, nil, &error);
+        if (event == nil || error) {
+          GDTCORLogDebug(@"Error deserializing event: %@", error);
+          [[NSFileManager defaultManager] removeItemAtPath:eventPath error:nil];
+          continue;
+        } else {
+          NSString *fileName = [eventPath lastPathComponent];
+          NSString *batchPath =
+              [GDTCORFlatFileStorage batchPathForTarget:eventSelector.selectedTarget
+                                                batchID:batchID
+                                         expirationDate:expiration];
+          [[NSFileManager defaultManager] createDirectoryAtPath:batchPath
+                                    withIntermediateDirectories:YES
+                                                     attributes:nil
+                                                          error:nil];
+          NSString *destinationPath = [batchPath stringByAppendingPathComponent:fileName];
+          error = nil;
+          [[NSFileManager defaultManager] moveItemAtPath:eventPath
+                                                  toPath:destinationPath
+                                                   error:&error];
+          if (error) {
+            GDTCORLogDebug(@"An event file wasn't moveable into the batch directory: %@", error);
+          }
+          [events addObject:event];
+        }
+      }
+      if (onComplete) {
+        if (events.count == 0) {
+          onComplete(nil, nil);
+        } else {
+          onComplete(batchID, events);
+        }
+      }
+    });
+  };
+
+  void (^onBatchIDFetchComplete)(NSNumber *) = ^(NSNumber *batchID) {
+    dispatch_async(queue, ^{
+      if (batchID == nil) {
+        if (onComplete) {
+          onComplete(nil, nil);
+          return;
+        }
+      }
+      [self pathsForTarget:eventSelector.selectedTarget
+                  eventIDs:eventSelector.selectedEventIDs
+                  qosTiers:eventSelector.selectedQosTiers
+                mappingIDs:eventSelector.selectedMappingIDs
+                onComplete:^(NSSet<NSString *> *_Nonnull paths) {
+                  onPathsForTargetComplete(batchID, paths);
+                }];
+    });
+  };
+
+  [self nextBatchID:^(NSNumber *_Nullable batchID) {
+    if (batchID == nil) {
+      if (onComplete) {
+        onComplete(nil, nil);
+      }
+    } else {
+      onBatchIDFetchComplete(batchID);
+    }
+  }];
+}
+
+- (void)removeBatchWithID:(nonnull NSNumber *)batchID
+             deleteEvents:(BOOL)deleteEvents
+               onComplete:(void (^_Nullable)(void))onComplete {
+  dispatch_async(_storageQueue, ^{
+    [self syncThreadUnsafeRemoveBatchWithID:batchID deleteEvents:deleteEvents];
+
+    if (onComplete) {
+      onComplete();
+    }
+  });
+}
+
+- (void)batchIDsForTarget:(GDTCORTarget)target
+               onComplete:(nonnull void (^)(NSSet<NSNumber *> *_Nullable))onComplete {
+  dispatch_async(_storageQueue, ^{
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    NSError *error;
+    NSArray<NSString *> *batchPaths =
+        [fileManager contentsOfDirectoryAtPath:[GDTCORFlatFileStorage batchDataStoragePath]
+                                         error:&error];
+    if (error || batchPaths.count == 0) {
+      if (onComplete) {
+        onComplete(nil);
+      }
+      return;
+    }
+    NSMutableSet<NSNumber *> *batchIDs = [[NSMutableSet alloc] init];
+    for (NSString *path in batchPaths) {
+      NSDictionary<NSString *, id> *components = [self batchComponentsFromFilename:path];
+      NSNumber *targetNumber = components[kGDTCORBatchComponentsTargetKey];
+      NSNumber *batchID = components[kGDTCORBatchComponentsBatchIDKey];
+      if (batchID != nil && targetNumber.intValue == target) {
+        [batchIDs addObject:batchID];
+      }
+    }
+    if (onComplete) {
+      onComplete(batchIDs);
+    }
+  });
+}
+
+- (void)libraryDataForKey:(nonnull NSString *)key
+          onFetchComplete:(nonnull void (^)(NSData *_Nullable, NSError *_Nullable))onFetchComplete
+              setNewValue:(NSData *_Nullable (^_Nullable)(void))setValueBlock {
+  dispatch_async(_storageQueue, ^{
+    NSString *dataPath = [[[self class] libraryDataStoragePath] stringByAppendingPathComponent:key];
+    NSError *error;
+    NSData *data = [NSData dataWithContentsOfFile:dataPath options:0 error:&error];
+    if (onFetchComplete) {
+      onFetchComplete(data, error);
+    }
+    if (setValueBlock) {
+      NSData *newValue = setValueBlock();
+      // The -isKindOfClass check is necessary because without an explicit 'return nil' in the block
+      // the implicit return value will be the block itself. The compiler doesn't detect this.
+      if (newValue != nil && [newValue isKindOfClass:[NSData class]] && newValue.length) {
+        NSError *newValueError;
+        if ([newValue writeToFile:dataPath options:NSDataWritingAtomic error:&newValueError]) {
+          // Update storage size.
+          [self.sizeTracker fileWasRemovedAtPath:dataPath withSize:data.length];
+          [self.sizeTracker fileWasAddedAtPath:dataPath withSize:newValue.length];
+        } else {
+          GDTCORLogDebug(@"Error writing new value in libraryDataForKey: %@", newValueError);
+        }
+      }
+    }
+  });
+}
+
+- (void)storeLibraryData:(NSData *)data
+                  forKey:(nonnull NSString *)key
+              onComplete:(nullable void (^)(NSError *_Nullable error))onComplete {
+  if (!data || data.length <= 0) {
+    if (onComplete) {
+      onComplete([NSError errorWithDomain:NSInternalInconsistencyException code:-1 userInfo:nil]);
+    }
+    return;
+  }
+  dispatch_async(_storageQueue, ^{
+    NSError *error;
+    NSString *dataPath = [[[self class] libraryDataStoragePath] stringByAppendingPathComponent:key];
+    if ([data writeToFile:dataPath options:NSDataWritingAtomic error:&error]) {
+      [self.sizeTracker fileWasAddedAtPath:dataPath withSize:data.length];
+    }
+    if (onComplete) {
+      onComplete(error);
+    }
+  });
+}
+
+- (void)removeLibraryDataForKey:(nonnull NSString *)key
+                     onComplete:(nonnull void (^)(NSError *_Nullable error))onComplete {
+  dispatch_async(_storageQueue, ^{
+    NSError *error;
+    NSString *dataPath = [[[self class] libraryDataStoragePath] stringByAppendingPathComponent:key];
+    GDTCORStorageSizeBytes fileSize =
+        [self.sizeTracker fileSizeAtURL:[NSURL fileURLWithPath:dataPath]];
+
+    if ([[NSFileManager defaultManager] fileExistsAtPath:dataPath]) {
+      if ([[NSFileManager defaultManager] removeItemAtPath:dataPath error:&error]) {
+        [self.sizeTracker fileWasRemovedAtPath:dataPath withSize:fileSize];
+      }
+      if (onComplete) {
+        onComplete(error);
+      }
+    }
+  });
+}
+
+- (void)hasEventsForTarget:(GDTCORTarget)target onComplete:(void (^)(BOOL hasEvents))onComplete {
+  dispatch_async(_storageQueue, ^{
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    NSString *targetPath = [NSString
+        stringWithFormat:@"%@/%ld", [GDTCORFlatFileStorage eventDataStoragePath], (long)target];
+    [fileManager createDirectoryAtPath:targetPath
+           withIntermediateDirectories:YES
+                            attributes:nil
+                                 error:nil];
+    NSDirectoryEnumerator *enumerator = [fileManager enumeratorAtPath:targetPath];
+    BOOL hasEventAtLeastOneEvent = [enumerator nextObject] != nil;
+    if (onComplete) {
+      onComplete(hasEventAtLeastOneEvent);
+    }
+  });
+}
+
+- (void)checkForExpirations {
+  dispatch_async(_storageQueue, ^{
+    GDTCORLogDebug(@"%@", @"Checking for expired events and batches");
+    NSTimeInterval now = [NSDate date].timeIntervalSince1970;
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+
+    // TODO: Storage may not have enough context to remove batches because a batch may be being
+    // uploaded but the storage has not context of it.
+
+    // Find expired batches and move their events back to the main storage.
+    // If a batch contains expired events they are expected to be removed further in the method
+    // together with other expired events in the main storage.
+    NSString *batchDataPath = [GDTCORFlatFileStorage batchDataStoragePath];
+    NSArray<NSString *> *batchDataPaths = [fileManager contentsOfDirectoryAtPath:batchDataPath
+                                                                           error:nil];
+    for (NSString *path in batchDataPaths) {
+      @autoreleasepool {
+        NSString *fileName = [path lastPathComponent];
+        NSDictionary<NSString *, id> *batchComponents = [self batchComponentsFromFilename:fileName];
+        NSDate *expirationDate = batchComponents[kGDTCORBatchComponentsExpirationKey];
+        NSNumber *batchID = batchComponents[kGDTCORBatchComponentsBatchIDKey];
+        if (expirationDate != nil && expirationDate.timeIntervalSince1970 < now && batchID != nil) {
+          NSNumber *batchID = batchComponents[kGDTCORBatchComponentsBatchIDKey];
+          // Move all events from the expired batch back to the main storage.
+          [self syncThreadUnsafeRemoveBatchWithID:batchID deleteEvents:NO];
+        }
+      }
+    }
+
+    // Find expired events and remove them from the storage.
+    NSString *eventDataPath = [GDTCORFlatFileStorage eventDataStoragePath];
+    NSDirectoryEnumerator *enumerator = [fileManager enumeratorAtPath:eventDataPath];
+    NSString *path;
+
+    while (YES) {
+      @autoreleasepool {
+        // Call `[enumerator nextObject]` under autorelease pool to make sure all autoreleased
+        // objects created under the hood are released on each iteration end to avoid unnecessary
+        // memory growth.
+        path = [enumerator nextObject];
+        if (path == nil) {
+          break;
+        }
+
+        NSString *fileName = [path lastPathComponent];
+        NSDictionary<NSString *, id> *eventComponents = [self eventComponentsFromFilename:fileName];
+        NSDate *expirationDate = eventComponents[kGDTCOREventComponentsExpirationKey];
+        if (expirationDate != nil && expirationDate.timeIntervalSince1970 < now) {
+          NSString *pathToDelete = [eventDataPath stringByAppendingPathComponent:path];
+          NSError *error;
+          [fileManager removeItemAtPath:pathToDelete error:&error];
+          if (error != nil) {
+            GDTCORLogDebug(@"There was an error deleting an expired item: %@", error);
+          } else {
+            GDTCORLogDebug(@"Item deleted because it expired: %@", pathToDelete);
+          }
+        }
+      }
+    }
+
+    [self.sizeTracker resetCachedSize];
+  });
+}
+
+- (void)storageSizeWithCallback:(void (^)(uint64_t storageSize))onComplete {
+  if (!onComplete) {
+    return;
+  }
+
+  dispatch_async(_storageQueue, ^{
+    onComplete([self.sizeTracker directoryContentSize]);
+  });
+}
+
+#pragma mark - Private not thread safe methods
+/** Looks for directory paths containing events for a batch with the specified ID.
+ * @param batchID A batch ID.
+ * @param outError A pointer to `NSError *` to assign as possible error to.
+ * @return An array of an array of paths to directories for event batches with a specified batch ID
+ * or `nil` in the case of an error. Usually returns a single path but potentially return more in
+ * cases when the app is terminated while uploading a batch.
+ */
+- (nullable NSArray<NSString *> *)batchDirPathsForBatchID:(NSNumber *)batchID
+                                                    error:(NSError **_Nonnull)outError {
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+  NSError *error;
+  NSArray<NSString *> *batches =
+      [fileManager contentsOfDirectoryAtPath:[GDTCORFlatFileStorage batchDataStoragePath]
+                                       error:&error];
+  if (batches == nil) {
+    *outError = error;
+    GDTCORLogDebug(@"Failed to find event file paths for batchID: %@, error: %@", batchID, error);
+    return nil;
+  }
+
+  NSMutableArray<NSString *> *batchDirPaths = [NSMutableArray array];
+  for (NSString *path in batches) {
+    NSDictionary<NSString *, id> *components = [self batchComponentsFromFilename:path];
+    NSNumber *pathBatchID = components[kGDTCORBatchComponentsBatchIDKey];
+    if ([pathBatchID isEqual:batchID]) {
+      NSString *batchDirPath =
+          [[GDTCORFlatFileStorage batchDataStoragePath] stringByAppendingPathComponent:path];
+      [batchDirPaths addObject:batchDirPath];
+    }
+  }
+
+  return [batchDirPaths copy];
+}
+
+/** Makes a copy of the contents of a directory to a directory at the specified path.*/
+- (BOOL)moveContentsOfDirectoryAtPath:(NSString *)sourcePath
+                                   to:(NSString *)destinationPath
+                                error:(NSError **_Nonnull)outError {
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+
+  NSError *error;
+  NSArray<NSString *> *contentsPaths = [fileManager contentsOfDirectoryAtPath:sourcePath
+                                                                        error:&error];
+  if (contentsPaths == nil) {
+    *outError = error;
+    return NO;
+  }
+
+  NSMutableArray<NSError *> *errors = [NSMutableArray array];
+  for (NSString *path in contentsPaths) {
+    NSString *contentDestinationPath = [destinationPath stringByAppendingPathComponent:path];
+    NSString *contentSourcePath = [sourcePath stringByAppendingPathComponent:path];
+
+    NSError *moveError;
+    if (![fileManager moveItemAtPath:contentSourcePath
+                              toPath:contentDestinationPath
+                               error:&moveError] &&
+        moveError) {
+      [errors addObject:moveError];
+    }
+  }
+
+  if (errors.count == 0) {
+    return YES;
+  } else {
+    NSError *combinedError = [NSError errorWithDomain:@"GDTCORFlatFileStorage"
+                                                 code:-1
+                                             userInfo:@{NSUnderlyingErrorKey : errors}];
+    *outError = combinedError;
+    return NO;
+  }
+}
+
+- (void)syncThreadUnsafeRemoveBatchWithID:(nonnull NSNumber *)batchID
+                             deleteEvents:(BOOL)deleteEvents {
+  NSError *error;
+  NSArray<NSString *> *batchDirPaths = [self batchDirPathsForBatchID:batchID error:&error];
+
+  if (batchDirPaths == nil) {
+    return;
+  }
+
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+
+  void (^removeBatchDir)(NSString *batchDirPath) = ^(NSString *batchDirPath) {
+    NSError *error;
+    if ([fileManager removeItemAtPath:batchDirPath error:&error]) {
+      GDTCORLogDebug(@"Batch removed at path: %@", batchDirPath);
+    } else {
+      GDTCORLogDebug(@"Failed to remove batch at path: %@", batchDirPath);
+    }
+  };
+
+  for (NSString *batchDirPath in batchDirPaths) {
+    @autoreleasepool {
+      if (deleteEvents) {
+        removeBatchDir(batchDirPath);
+      } else {
+        NSString *batchDirName = [batchDirPath lastPathComponent];
+        NSDictionary<NSString *, id> *components = [self batchComponentsFromFilename:batchDirName];
+        NSString *targetValue = [components[kGDTCORBatchComponentsTargetKey] stringValue];
+        NSString *destinationPath;
+        if (targetValue) {
+          destinationPath = [[GDTCORFlatFileStorage eventDataStoragePath]
+              stringByAppendingPathComponent:targetValue];
+        }
+
+        // `- [NSFileManager moveItemAtPath:toPath:error:]` method fails if an item by the
+        // destination path already exists (which usually is the case for the current method). Move
+        // the events one by one instead.
+        if (destinationPath && [self moveContentsOfDirectoryAtPath:batchDirPath
+                                                                to:destinationPath
+                                                             error:&error]) {
+          GDTCORLogDebug(@"Batched events at path: %@ moved back to the storage: %@", batchDirPath,
+                         destinationPath);
+        } else {
+          GDTCORLogDebug(@"Error encountered whilst moving events back: %@", error);
+        }
+
+        // Even if not all events where moved back to the storage, there is not much can be done at
+        // this point, so cleanup batch directory now to avoid cluttering.
+        removeBatchDir(batchDirPath);
+      }
+    }
+  }
+
+  [self.sizeTracker resetCachedSize];
+}
+
+#pragma mark - Private helper methods
+
++ (NSString *)eventDataStoragePath {
+  static NSString *eventDataPath;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    eventDataPath = [NSString stringWithFormat:@"%@/%@/gdt_event_data", GDTCORRootDirectory().path,
+                                               NSStringFromClass([self class])];
+  });
+  NSError *error;
+  [[NSFileManager defaultManager] createDirectoryAtPath:eventDataPath
+                            withIntermediateDirectories:YES
+                                             attributes:0
+                                                  error:&error];
+  GDTCORAssert(error == nil, @"Creating the library data path failed: %@", error);
+  return eventDataPath;
+}
+
++ (NSString *)batchDataStoragePath {
+  static NSString *batchDataPath;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    batchDataPath = [NSString stringWithFormat:@"%@/%@/gdt_batch_data", GDTCORRootDirectory().path,
+                                               NSStringFromClass([self class])];
+  });
+  NSError *error;
+  [[NSFileManager defaultManager] createDirectoryAtPath:batchDataPath
+                            withIntermediateDirectories:YES
+                                             attributes:0
+                                                  error:&error];
+  GDTCORAssert(error == nil, @"Creating the batch data path failed: %@", error);
+  return batchDataPath;
+}
+
++ (NSString *)libraryDataStoragePath {
+  static NSString *libraryDataPath;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    libraryDataPath =
+        [NSString stringWithFormat:@"%@/%@/gdt_library_data", GDTCORRootDirectory().path,
+                                   NSStringFromClass([self class])];
+  });
+  NSError *error;
+  [[NSFileManager defaultManager] createDirectoryAtPath:libraryDataPath
+                            withIntermediateDirectories:YES
+                                             attributes:0
+                                                  error:&error];
+  GDTCORAssert(error == nil, @"Creating the library data path failed: %@", error);
+  return libraryDataPath;
+}
+
++ (NSString *)batchPathForTarget:(GDTCORTarget)target
+                         batchID:(NSNumber *)batchID
+                  expirationDate:(NSDate *)expirationDate {
+  return
+      [NSString stringWithFormat:@"%@/%ld%@%@%@%llu", [GDTCORFlatFileStorage batchDataStoragePath],
+                                 (long)target, kMetadataSeparator, batchID, kMetadataSeparator,
+                                 ((uint64_t)expirationDate.timeIntervalSince1970)];
+}
+
++ (NSString *)pathForTarget:(GDTCORTarget)target
+                    eventID:(NSString *)eventID
+                    qosTier:(NSNumber *)qosTier
+             expirationDate:(NSDate *)expirationDate
+                  mappingID:(NSString *)mappingID {
+  NSMutableCharacterSet *allowedChars = [[NSCharacterSet alphanumericCharacterSet] mutableCopy];
+  [allowedChars addCharactersInString:kMetadataSeparator];
+  mappingID = [mappingID stringByAddingPercentEncodingWithAllowedCharacters:allowedChars];
+  return [NSString stringWithFormat:@"%@/%ld/%@%@%@%@%llu%@%@",
+                                    [GDTCORFlatFileStorage eventDataStoragePath], (long)target,
+                                    eventID, kMetadataSeparator, qosTier, kMetadataSeparator,
+                                    ((uint64_t)expirationDate.timeIntervalSince1970),
+                                    kMetadataSeparator, mappingID];
+}
+
+- (void)pathsForTarget:(GDTCORTarget)target
+              eventIDs:(nullable NSSet<NSString *> *)eventIDs
+              qosTiers:(nullable NSSet<NSNumber *> *)qosTiers
+            mappingIDs:(nullable NSSet<NSString *> *)mappingIDs
+            onComplete:(void (^)(NSSet<NSString *> *paths))onComplete {
+  void (^completion)(NSSet<NSString *> *) = onComplete == nil ? ^(NSSet<NSString *> *paths){} : onComplete;
+  dispatch_async(_storageQueue, ^{
+    NSMutableSet<NSString *> *paths = [[NSMutableSet alloc] init];
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    NSString *targetPath = [NSString
+        stringWithFormat:@"%@/%ld", [GDTCORFlatFileStorage eventDataStoragePath], (long)target];
+    [fileManager createDirectoryAtPath:targetPath
+           withIntermediateDirectories:YES
+                            attributes:nil
+                                 error:nil];
+    NSError *error;
+    NSArray<NSString *> *dirPaths = [fileManager contentsOfDirectoryAtPath:targetPath error:&error];
+    if (error) {
+      GDTCORLogDebug(@"There was an error reading the contents of the target path: %@", error);
+      completion(paths);
+      return;
+    }
+    BOOL checkingIDs = eventIDs.count > 0;
+    BOOL checkingQosTiers = qosTiers.count > 0;
+    BOOL checkingMappingIDs = mappingIDs.count > 0;
+    BOOL checkingAnything = checkingIDs == NO && checkingQosTiers == NO && checkingMappingIDs == NO;
+    for (NSString *path in dirPaths) {
+      // Skip hidden files that are created as part of atomic file creation.
+      if ([path hasPrefix:@"."]) {
+        continue;
+      }
+      NSString *filePath = [targetPath stringByAppendingPathComponent:path];
+      if (checkingAnything) {
+        [paths addObject:filePath];
+        continue;
+      }
+      NSString *filename = [path lastPathComponent];
+      NSDictionary<NSString *, id> *eventComponents = [self eventComponentsFromFilename:filename];
+      if (!eventComponents) {
+        GDTCORLogDebug(@"There was an error reading the filename components: %@", eventComponents);
+        continue;
+      }
+      NSString *eventID = eventComponents[kGDTCOREventComponentsEventIDKey];
+      NSNumber *qosTier = eventComponents[kGDTCOREventComponentsQoSTierKey];
+      NSString *mappingID = eventComponents[kGDTCOREventComponentsMappingIDKey];
+
+      NSNumber *eventIDMatch = checkingIDs ? @([eventIDs containsObject:eventID]) : nil;
+      NSNumber *qosTierMatch = checkingQosTiers ? @([qosTiers containsObject:qosTier]) : nil;
+      NSNumber *mappingIDMatch =
+          checkingMappingIDs
+              ? @([mappingIDs containsObject:[mappingID stringByRemovingPercentEncoding]])
+              : nil;
+      if ((eventIDMatch == nil || eventIDMatch.boolValue) &&
+          (qosTierMatch == nil || qosTierMatch.boolValue) &&
+          (mappingIDMatch == nil || mappingIDMatch.boolValue)) {
+        [paths addObject:filePath];
+      }
+    }
+    completion(paths);
+  });
+}
+
+- (void)nextBatchID:(void (^)(NSNumber *_Nullable batchID))nextBatchID {
+  __block int32_t lastBatchID = -1;
+  [self libraryDataForKey:gBatchIDCounterKey
+      onFetchComplete:^(NSData *_Nullable data, NSError *_Nullable getValueError) {
+        if (!getValueError) {
+          [data getBytes:(void *)&lastBatchID length:sizeof(int32_t)];
+        }
+        if (data == nil) {
+          lastBatchID = 0;
+        }
+        if (nextBatchID) {
+          nextBatchID(@(lastBatchID));
+        }
+      }
+      setNewValue:^NSData *_Nullable(void) {
+        if (lastBatchID != -1) {
+          int32_t incrementedValue = lastBatchID + 1;
+          return [NSData dataWithBytes:&incrementedValue length:sizeof(int32_t)];
+        }
+        return nil;
+      }];
+}
+
+- (nullable NSDictionary<NSString *, id> *)eventComponentsFromFilename:(NSString *)fileName {
+  NSArray<NSString *> *components = [fileName componentsSeparatedByString:kMetadataSeparator];
+  if (components.count >= 4) {
+    NSString *eventID = components[0];
+    NSNumber *qosTier = @(components[1].integerValue);
+    NSDate *expirationDate = [NSDate dateWithTimeIntervalSince1970:components[2].longLongValue];
+    NSString *mappingID = [[components subarrayWithRange:NSMakeRange(3, components.count - 3)]
+        componentsJoinedByString:kMetadataSeparator];
+    if (eventID == nil || qosTier == nil || mappingID == nil || expirationDate == nil) {
+      GDTCORLogDebug(@"There was an error parsing the event filename components: %@", components);
+      return nil;
+    }
+    return @{
+      kGDTCOREventComponentsEventIDKey : eventID,
+      kGDTCOREventComponentsQoSTierKey : qosTier,
+      kGDTCOREventComponentsExpirationKey : expirationDate,
+      kGDTCOREventComponentsMappingIDKey : mappingID
+    };
+  }
+  GDTCORLogDebug(@"The event filename could not be split: %@", fileName);
+  return nil;
+}
+
+- (nullable NSDictionary<NSString *, id> *)batchComponentsFromFilename:(NSString *)fileName {
+  NSArray<NSString *> *components = [fileName componentsSeparatedByString:kMetadataSeparator];
+  if (components.count == 3) {
+    NSNumber *target = @(components[0].integerValue);
+    NSNumber *batchID = @(components[1].integerValue);
+    NSDate *expirationDate = [NSDate dateWithTimeIntervalSince1970:components[2].doubleValue];
+    if (target == nil || batchID == nil || expirationDate == nil) {
+      GDTCORLogDebug(@"There was an error parsing the batch filename components: %@", components);
+      return nil;
+    }
+    return @{
+      kGDTCORBatchComponentsTargetKey : target,
+      kGDTCORBatchComponentsBatchIDKey : batchID,
+      kGDTCORBatchComponentsExpirationKey : expirationDate
+    };
+  }
+  GDTCORLogDebug(@"The batch filename could not be split: %@", fileName);
+  return nil;
+}
+
+#pragma mark - GDTCORLifecycleProtocol
+
+- (void)appWillBackground:(GDTCORApplication *)app {
+  dispatch_async(_storageQueue, ^{
+    // Immediately request a background task to run until the end of the current queue of work,
+    // and cancel it once the work is done.
+    __block GDTCORBackgroundIdentifier bgID =
+        [app beginBackgroundTaskWithName:@"GDTStorage"
+                       expirationHandler:^{
+                         [app endBackgroundTask:bgID];
+                         bgID = GDTCORBackgroundIdentifierInvalid;
+                       }];
+    // End the background task if it's still valid.
+    [app endBackgroundTask:bgID];
+    bgID = GDTCORBackgroundIdentifierInvalid;
+  });
+}
+
+- (void)appWillTerminate:(GDTCORApplication *)application {
+  dispatch_sync(_storageQueue, ^{
+                });
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORLifecycle.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORLifecycle.m
new file mode 100644
index 0000000..89da75d
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORLifecycle.m	
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer_Private.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h"
+
+@implementation GDTCORLifecycle
+
++ (void)load {
+  [self sharedInstance];
+}
+
+/** Creates/returns the singleton instance of this class.
+ *
+ * @return The singleton instance of this class.
+ */
++ (instancetype)sharedInstance {
+  static GDTCORLifecycle *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[GDTCORLifecycle alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    [notificationCenter addObserver:self
+                           selector:@selector(applicationDidEnterBackground:)
+                               name:kGDTCORApplicationDidEnterBackgroundNotification
+                             object:nil];
+    [notificationCenter addObserver:self
+                           selector:@selector(applicationWillEnterForeground:)
+                               name:kGDTCORApplicationWillEnterForegroundNotification
+                             object:nil];
+
+    NSString *name = kGDTCORApplicationWillTerminateNotification;
+    [notificationCenter addObserver:self
+                           selector:@selector(applicationWillTerminate:)
+                               name:name
+                             object:nil];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+- (void)applicationDidEnterBackground:(NSNotification *)notification {
+  GDTCORApplication *application = [GDTCORApplication sharedApplication];
+  if ([[GDTCORTransformer sharedInstance] respondsToSelector:@selector(appWillBackground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORTransformer that the app is backgrounding.");
+    [[GDTCORTransformer sharedInstance] appWillBackground:application];
+  }
+  if ([[GDTCORUploadCoordinator sharedInstance] respondsToSelector:@selector(appWillBackground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORUploadCoordinator that the app is backgrounding.");
+    [[GDTCORUploadCoordinator sharedInstance] appWillBackground:application];
+  }
+  if ([[GDTCORRegistrar sharedInstance] respondsToSelector:@selector(appWillBackground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORRegistrar that the app is backgrounding.");
+    [[GDTCORRegistrar sharedInstance] appWillBackground:application];
+  }
+}
+
+- (void)applicationWillEnterForeground:(NSNotification *)notification {
+  GDTCORApplication *application = [GDTCORApplication sharedApplication];
+  if ([[GDTCORTransformer sharedInstance] respondsToSelector:@selector(appWillForeground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORTransformer that the app is foregrounding.");
+    [[GDTCORTransformer sharedInstance] appWillForeground:application];
+  }
+  if ([[GDTCORUploadCoordinator sharedInstance] respondsToSelector:@selector(appWillForeground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORUploadCoordinator that the app is foregrounding.");
+    [[GDTCORUploadCoordinator sharedInstance] appWillForeground:application];
+  }
+  if ([[GDTCORRegistrar sharedInstance] respondsToSelector:@selector(appWillForeground:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORRegistrar that the app is foregrounding.");
+    [[GDTCORRegistrar sharedInstance] appWillForeground:application];
+  }
+}
+
+- (void)applicationWillTerminate:(NSNotification *)notification {
+  GDTCORApplication *application = [GDTCORApplication sharedApplication];
+  if ([[GDTCORTransformer sharedInstance] respondsToSelector:@selector(appWillTerminate:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORTransformer that the app is terminating.");
+    [[GDTCORTransformer sharedInstance] appWillTerminate:application];
+  }
+  if ([[GDTCORUploadCoordinator sharedInstance] respondsToSelector:@selector(appWillTerminate:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORUploadCoordinator that the app is terminating.");
+    [[GDTCORUploadCoordinator sharedInstance] appWillTerminate:application];
+  }
+  if ([[GDTCORRegistrar sharedInstance] respondsToSelector:@selector(appWillTerminate:)]) {
+    GDTCORLogDebug(@"%@", @"Signaling GDTCORRegistrar that the app is terminating.");
+    [[GDTCORRegistrar sharedInstance] appWillTerminate:application];
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORPlatform.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORPlatform.m
new file mode 100644
index 0000000..a6207ec
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORPlatform.m	
@@ -0,0 +1,604 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+
+#import <sys/sysctl.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+
+#ifdef GDTCOR_VERSION
+#define STR(x) STR_EXPAND(x)
+#define STR_EXPAND(x) #x
+NSString *const kGDTCORVersion = @STR(GDTCOR_VERSION);
+#else
+NSString *const kGDTCORVersion = @"Unknown";
+#endif  // GDTCOR_VERSION
+
+const GDTCORBackgroundIdentifier GDTCORBackgroundIdentifierInvalid = 0;
+
+NSString *const kGDTCORApplicationDidEnterBackgroundNotification =
+    @"GDTCORApplicationDidEnterBackgroundNotification";
+
+NSString *const kGDTCORApplicationWillEnterForegroundNotification =
+    @"GDTCORApplicationWillEnterForegroundNotification";
+
+NSString *const kGDTCORApplicationWillTerminateNotification =
+    @"GDTCORApplicationWillTerminateNotification";
+
+NSURL *GDTCORRootDirectory(void) {
+  static NSURL *GDTPath;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSString *cachePath =
+        NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
+    GDTPath =
+        [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/google-sdks-events", cachePath]];
+    GDTCORLogDebug(@"GDT's state will be saved to: %@", GDTPath);
+  });
+  NSError *error;
+  [[NSFileManager defaultManager] createDirectoryAtPath:GDTPath.path
+                            withIntermediateDirectories:YES
+                                             attributes:nil
+                                                  error:&error];
+  GDTCORAssert(error == nil, @"There was an error creating GDT's path");
+  return GDTPath;
+}
+
+BOOL GDTCORReachabilityFlagsReachable(GDTCORNetworkReachabilityFlags flags) {
+#if !TARGET_OS_WATCH
+  BOOL reachable =
+      (flags & kSCNetworkReachabilityFlagsReachable) == kSCNetworkReachabilityFlagsReachable;
+  BOOL connectionRequired = (flags & kSCNetworkReachabilityFlagsConnectionRequired) ==
+                            kSCNetworkReachabilityFlagsConnectionRequired;
+  return reachable && !connectionRequired;
+#else
+  return (flags & kGDTCORNetworkReachabilityFlagsReachable) ==
+         kGDTCORNetworkReachabilityFlagsReachable;
+#endif
+}
+
+BOOL GDTCORReachabilityFlagsContainWWAN(GDTCORNetworkReachabilityFlags flags) {
+#if TARGET_OS_IOS
+  return (flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN;
+#else
+  // Assume network connection not WWAN on macOS, tvOS, watchOS.
+  return NO;
+#endif  // TARGET_OS_IOS
+}
+
+GDTCORNetworkType GDTCORNetworkTypeMessage() {
+#if !TARGET_OS_WATCH
+  SCNetworkReachabilityFlags reachabilityFlags = [GDTCORReachability currentFlags];
+  if ((reachabilityFlags & kSCNetworkReachabilityFlagsReachable) ==
+      kSCNetworkReachabilityFlagsReachable) {
+    if (GDTCORReachabilityFlagsContainWWAN(reachabilityFlags)) {
+      return GDTCORNetworkTypeMobile;
+    } else {
+      return GDTCORNetworkTypeWIFI;
+    }
+  }
+#endif
+  return GDTCORNetworkTypeUNKNOWN;
+}
+
+GDTCORNetworkMobileSubtype GDTCORNetworkMobileSubTypeMessage() {
+#if TARGET_OS_IOS
+  static NSDictionary<NSString *, NSNumber *> *CTRadioAccessTechnologyToNetworkSubTypeMessage;
+  static CTTelephonyNetworkInfo *networkInfo;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    CTRadioAccessTechnologyToNetworkSubTypeMessage = @{
+      CTRadioAccessTechnologyGPRS : @(GDTCORNetworkMobileSubtypeGPRS),
+      CTRadioAccessTechnologyEdge : @(GDTCORNetworkMobileSubtypeEdge),
+      CTRadioAccessTechnologyWCDMA : @(GDTCORNetworkMobileSubtypeWCDMA),
+      CTRadioAccessTechnologyHSDPA : @(GDTCORNetworkMobileSubtypeHSDPA),
+      CTRadioAccessTechnologyHSUPA : @(GDTCORNetworkMobileSubtypeHSUPA),
+      CTRadioAccessTechnologyCDMA1x : @(GDTCORNetworkMobileSubtypeCDMA1x),
+      CTRadioAccessTechnologyCDMAEVDORev0 : @(GDTCORNetworkMobileSubtypeCDMAEVDORev0),
+      CTRadioAccessTechnologyCDMAEVDORevA : @(GDTCORNetworkMobileSubtypeCDMAEVDORevA),
+      CTRadioAccessTechnologyCDMAEVDORevB : @(GDTCORNetworkMobileSubtypeCDMAEVDORevB),
+      CTRadioAccessTechnologyeHRPD : @(GDTCORNetworkMobileSubtypeHRPD),
+      CTRadioAccessTechnologyLTE : @(GDTCORNetworkMobileSubtypeLTE),
+    };
+    networkInfo = [[CTTelephonyNetworkInfo alloc] init];
+  });
+  NSString *networkCurrentRadioAccessTechnology;
+#if TARGET_OS_MACCATALYST
+  NSDictionary<NSString *, NSString *> *networkCurrentRadioAccessTechnologyDict =
+      networkInfo.serviceCurrentRadioAccessTechnology;
+  if (networkCurrentRadioAccessTechnologyDict.count) {
+    networkCurrentRadioAccessTechnology = networkCurrentRadioAccessTechnologyDict.allValues[0];
+  }
+#else  // TARGET_OS_MACCATALYST
+  if (@available(iOS 12.0, *)) {
+    NSDictionary<NSString *, NSString *> *networkCurrentRadioAccessTechnologyDict =
+        networkInfo.serviceCurrentRadioAccessTechnology;
+    if (networkCurrentRadioAccessTechnologyDict.count) {
+      // In iOS 12, multiple radio technologies can be captured. We prefer not particular radio
+      // tech to another, so we'll just return the first value in the dictionary.
+      networkCurrentRadioAccessTechnology = networkCurrentRadioAccessTechnologyDict.allValues[0];
+    }
+  } else {
+#if TARGET_OS_IOS && __IPHONE_OS_VERSION_MIN_REQUIRED < 120000
+    networkCurrentRadioAccessTechnology = networkInfo.currentRadioAccessTechnology;
+#endif  // TARGET_OS_IOS && __IPHONE_OS_VERSION_MIN_REQUIRED < 120000
+  }
+#endif  // TARGET_OS_MACCATALYST
+  if (networkCurrentRadioAccessTechnology) {
+    NSNumber *networkMobileSubtype =
+        CTRadioAccessTechnologyToNetworkSubTypeMessage[networkCurrentRadioAccessTechnology];
+    return networkMobileSubtype.intValue;
+  } else {
+    return GDTCORNetworkMobileSubtypeUNKNOWN;
+  }
+#else   // TARGET_OS_IOS
+  return GDTCORNetworkMobileSubtypeUNKNOWN;
+#endif  // TARGET_OS_IOS
+}
+
+NSString *_Nonnull GDTCORDeviceModel() {
+  static NSString *deviceModel = @"Unknown";
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    size_t size;
+    char *keyToExtract = "hw.machine";
+    sysctlbyname(keyToExtract, NULL, &size, NULL, 0);
+    if (size > 0) {
+      char *machine = calloc(1, size);
+      sysctlbyname(keyToExtract, machine, &size, NULL, 0);
+      deviceModel = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];
+      free(machine);
+    } else {
+      deviceModel = [UIDevice currentDevice].model;
+    }
+  });
+#endif
+
+  return deviceModel;
+}
+
+NSData *_Nullable GDTCOREncodeArchive(id<NSSecureCoding> obj,
+                                      NSString *filePath,
+                                      NSError *_Nullable *error) {
+  BOOL result = NO;
+  if (filePath.length > 0) {
+    result = [[NSFileManager defaultManager]
+              createDirectoryAtPath:[filePath stringByDeletingLastPathComponent]
+        withIntermediateDirectories:YES
+                         attributes:nil
+                              error:error];
+    if (result == NO || *error) {
+      GDTCORLogDebug(@"Attempt to create directory failed: path:%@ error:%@", filePath, *error);
+      return nil;
+    }
+  }
+  NSData *resultData;
+  if (@available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4, *)) {
+    resultData = [NSKeyedArchiver archivedDataWithRootObject:obj
+                                       requiringSecureCoding:YES
+                                                       error:error];
+    if (resultData == nil || (error != NULL && *error != nil)) {
+      GDTCORLogDebug(@"Encoding an object failed: %@", *error);
+      return nil;
+    }
+    if (filePath.length > 0) {
+      result = [resultData writeToFile:filePath options:NSDataWritingAtomic error:error];
+      if (result == NO || *error) {
+        GDTCORLogDebug(@"Attempt to write archive failed: path:%@ error:%@", filePath, *error);
+      } else {
+        GDTCORLogDebug(@"Writing archive succeeded: %@", filePath);
+      }
+    }
+  } else {
+    @try {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      resultData = [NSKeyedArchiver archivedDataWithRootObject:obj];
+#pragma clang diagnostic pop
+      if (filePath.length > 0) {
+        result = [resultData writeToFile:filePath options:NSDataWritingAtomic error:error];
+        if (result == NO || *error) {
+          GDTCORLogDebug(@"Attempt to write archive failed: URL:%@ error:%@", filePath, *error);
+        } else {
+          GDTCORLogDebug(@"Writing archive succeeded: %@", filePath);
+        }
+      }
+    } @catch (NSException *exception) {
+      NSString *errorString =
+          [NSString stringWithFormat:@"An exception was thrown during encoding: %@", exception];
+      *error = [NSError errorWithDomain:NSCocoaErrorDomain
+                                   code:-1
+                               userInfo:@{NSLocalizedFailureReasonErrorKey : errorString}];
+    }
+    if (filePath.length > 0) {
+      GDTCORLogDebug(@"Attempt to write archive. successful:%@ URL:%@ error:%@",
+                     result ? @"YES" : @"NO", filePath, *error);
+    }
+  }
+  return resultData;
+}
+
+id<NSSecureCoding> _Nullable GDTCORDecodeArchive(Class archiveClass,
+                                                 NSString *_Nullable archivePath,
+                                                 NSData *_Nullable archiveData,
+                                                 NSError *_Nullable *error) {
+  id<NSSecureCoding> unarchivedObject = nil;
+  if (@available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4, *)) {
+    NSData *data = archiveData ? archiveData : [NSData dataWithContentsOfFile:archivePath];
+    if (data) {
+      unarchivedObject = [NSKeyedUnarchiver unarchivedObjectOfClass:archiveClass
+                                                           fromData:data
+                                                              error:error];
+    }
+  } else {
+    @try {
+      NSData *archivedData =
+          archiveData ? archiveData : [NSData dataWithContentsOfFile:archivePath];
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      unarchivedObject = [NSKeyedUnarchiver unarchiveObjectWithData:archivedData];
+#pragma clang diagnostic pop
+    } @catch (NSException *exception) {
+      NSString *errorString =
+          [NSString stringWithFormat:@"An exception was thrown during encoding: %@", exception];
+      *error = [NSError errorWithDomain:NSCocoaErrorDomain
+                                   code:-1
+                               userInfo:@{NSLocalizedFailureReasonErrorKey : errorString}];
+    }
+  }
+  return unarchivedObject;
+}
+
+BOOL GDTCORWriteDataToFile(NSData *data, NSString *filePath, NSError *_Nullable *outError) {
+  BOOL result = NO;
+  if (filePath.length > 0) {
+    result = [[NSFileManager defaultManager]
+              createDirectoryAtPath:[filePath stringByDeletingLastPathComponent]
+        withIntermediateDirectories:YES
+                         attributes:nil
+                              error:outError];
+    if (result == NO || *outError) {
+      GDTCORLogDebug(@"Attempt to create directory failed: path:%@ error:%@", filePath, *outError);
+      return result;
+    }
+  }
+
+  if (filePath.length > 0) {
+    result = [data writeToFile:filePath options:NSDataWritingAtomic error:outError];
+    if (result == NO || *outError) {
+      GDTCORLogDebug(@"Attempt to write archive failed: path:%@ error:%@", filePath, *outError);
+    } else {
+      GDTCORLogDebug(@"Writing archive succeeded: %@", filePath);
+    }
+  }
+
+  return result;
+}
+
+@interface GDTCORApplication ()
+/**
+ Private flag to match the existing `readonly` public flag. This will be accurate for all platforms,
+ since we handle each platform's lifecycle notifications separately.
+ */
+@property(atomic, readwrite) BOOL isRunningInBackground;
+
+@end
+
+@implementation GDTCORApplication
+
+#if TARGET_OS_WATCH
+/** A dispatch queue on which all task semaphores will populate and remove from
+ * gBackgroundIdentifierToSemaphoreMap.
+ */
+static dispatch_queue_t gSemaphoreQueue;
+
+/** For mapping backgroundIdentifier to task semaphore. */
+static NSMutableDictionary<NSNumber *, dispatch_semaphore_t> *gBackgroundIdentifierToSemaphoreMap;
+#endif
+
++ (void)load {
+  GDTCORLogDebug(
+      @"%@", @"GDT is initializing. Please note that if you quit the app via the "
+              "debugger and not through a lifecycle event, event data will remain on disk but "
+              "storage won't have a reference to them since the singleton wasn't saved to disk.");
+#if TARGET_OS_IOS || TARGET_OS_TV
+  // If this asserts, please file a bug at https://github.com/firebase/firebase-ios-sdk/issues.
+  GDTCORFatalAssert(
+      GDTCORBackgroundIdentifierInvalid == UIBackgroundTaskInvalid,
+      @"GDTCORBackgroundIdentifierInvalid and UIBackgroundTaskInvalid should be the same.");
+#endif
+  [self sharedApplication];
+}
+
++ (void)initialize {
+#if TARGET_OS_WATCH
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    gSemaphoreQueue = dispatch_queue_create("com.google.GDTCORApplication", DISPATCH_QUEUE_SERIAL);
+    GDTCORLogDebug(
+        @"%@",
+        @"GDTCORApplication is initializing on watchOS, gSemaphoreQueue has been initialized.");
+    gBackgroundIdentifierToSemaphoreMap = [[NSMutableDictionary alloc] init];
+    GDTCORLogDebug(@"%@", @"GDTCORApplication is initializing on watchOS, "
+                          @"gBackgroundIdentifierToSemaphoreMap has been initialized.");
+  });
+#endif
+}
+
++ (nullable GDTCORApplication *)sharedApplication {
+  static GDTCORApplication *application;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    application = [[GDTCORApplication alloc] init];
+  });
+  return application;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    // This class will be instantiated in the foreground.
+    _isRunningInBackground = NO;
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationDidEnterBackground:)
+                               name:UIApplicationDidEnterBackgroundNotification
+                             object:nil];
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationWillEnterForeground:)
+                               name:UIApplicationWillEnterForegroundNotification
+                             object:nil];
+
+    NSString *name = UIApplicationWillTerminateNotification;
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationWillTerminate:)
+                               name:name
+                             object:nil];
+
+#if defined(__IPHONE_13_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+    if (@available(iOS 13, tvOS 13.0, *)) {
+      [notificationCenter addObserver:self
+                             selector:@selector(iOSApplicationWillEnterForeground:)
+                                 name:UISceneWillEnterForegroundNotification
+                               object:nil];
+      [notificationCenter addObserver:self
+                             selector:@selector(iOSApplicationDidEnterBackground:)
+                                 name:UISceneWillDeactivateNotification
+                               object:nil];
+    }
+#endif  // defined(__IPHONE_13_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000
+
+#elif TARGET_OS_OSX
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    [notificationCenter addObserver:self
+                           selector:@selector(macOSApplicationWillTerminate:)
+                               name:NSApplicationWillTerminateNotification
+                             object:nil];
+
+#elif TARGET_OS_WATCH
+    // TODO: Notification on watchOS platform is currently posted by strings which are frangible.
+    // TODO: Needs improvements here.
+    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationDidEnterBackground:)
+                               name:@"UIApplicationDidEnterBackgroundNotification"
+                             object:nil];
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationWillEnterForeground:)
+                               name:@"UIApplicationWillEnterForegroundNotification"
+                             object:nil];
+
+    // Adds observers for app extension on watchOS platform
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationDidEnterBackground:)
+                               name:NSExtensionHostDidEnterBackgroundNotification
+                             object:nil];
+    [notificationCenter addObserver:self
+                           selector:@selector(iOSApplicationWillEnterForeground:)
+                               name:NSExtensionHostWillEnterForegroundNotification
+                             object:nil];
+#endif
+  }
+  return self;
+}
+
+#if TARGET_OS_WATCH
+/** Generates and maps a unique background identifier to the given semaphore.
+ *
+ * @param semaphore The semaphore to map.
+ * @return A unique GDTCORBackgroundIdentifier mapped to the given semaphore.
+ */
++ (GDTCORBackgroundIdentifier)createAndMapBackgroundIdentifierToSemaphore:
+    (dispatch_semaphore_t)semaphore {
+  __block GDTCORBackgroundIdentifier bgID = GDTCORBackgroundIdentifierInvalid;
+  dispatch_queue_t queue = gSemaphoreQueue;
+  NSMutableDictionary<NSNumber *, dispatch_semaphore_t> *map = gBackgroundIdentifierToSemaphoreMap;
+  if (queue && map) {
+    dispatch_sync(queue, ^{
+      bgID = arc4random();
+      NSNumber *bgIDNumber = @(bgID);
+      while (bgID == GDTCORBackgroundIdentifierInvalid || map[bgIDNumber]) {
+        bgID = arc4random();
+        bgIDNumber = @(bgID);
+      }
+      map[bgIDNumber] = semaphore;
+    });
+  }
+  return bgID;
+}
+
+/** Returns the semaphore mapped to given bgID and removes the value from the map.
+ *
+ * @param bgID The unique NSUInteger as GDTCORBackgroundIdentifier.
+ * @return The semaphore mapped by given bgID.
+ */
++ (dispatch_semaphore_t)semaphoreForBackgroundIdentifier:(GDTCORBackgroundIdentifier)bgID {
+  __block dispatch_semaphore_t semaphore;
+  dispatch_queue_t queue = gSemaphoreQueue;
+  NSMutableDictionary<NSNumber *, dispatch_semaphore_t> *map = gBackgroundIdentifierToSemaphoreMap;
+  NSNumber *bgIDNumber = @(bgID);
+  if (queue && map) {
+    dispatch_sync(queue, ^{
+      semaphore = map[bgIDNumber];
+      [map removeObjectForKey:bgIDNumber];
+    });
+  }
+  return semaphore;
+}
+#endif
+
+- (GDTCORBackgroundIdentifier)beginBackgroundTaskWithName:(NSString *)name
+                                        expirationHandler:(void (^)(void))handler {
+  __block GDTCORBackgroundIdentifier bgID = GDTCORBackgroundIdentifierInvalid;
+#if !TARGET_OS_WATCH
+  bgID = [[self sharedApplicationForBackgroundTask] beginBackgroundTaskWithName:name
+                                                              expirationHandler:handler];
+#if !NDEBUG
+  if (bgID != GDTCORBackgroundIdentifierInvalid) {
+    GDTCORLogDebug(@"Creating background task with name:%@ bgID:%ld", name, (long)bgID);
+  }
+#endif  // !NDEBUG
+#elif TARGET_OS_WATCH
+  dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+  bgID = [GDTCORApplication createAndMapBackgroundIdentifierToSemaphore:semaphore];
+  if (bgID != GDTCORBackgroundIdentifierInvalid) {
+    GDTCORLogDebug(@"Creating activity with name:%@ bgID:%ld on watchOS.", name, (long)bgID);
+  }
+  [[self sharedNSProcessInfoForBackgroundTask]
+      performExpiringActivityWithReason:name
+                             usingBlock:^(BOOL expired) {
+                               if (expired) {
+                                 if (handler) {
+                                   handler();
+                                 }
+                                 dispatch_semaphore_signal(semaphore);
+                                 GDTCORLogDebug(
+                                     @"Activity with name:%@ bgID:%ld on watchOS is expiring.",
+                                     name, (long)bgID);
+                               } else {
+                                 dispatch_semaphore_wait(
+                                     semaphore,
+                                     dispatch_time(DISPATCH_TIME_NOW, 30 * NSEC_PER_SEC));
+                               }
+                             }];
+#endif
+  return bgID;
+}
+
+- (void)endBackgroundTask:(GDTCORBackgroundIdentifier)bgID {
+#if !TARGET_OS_WATCH
+  if (bgID != GDTCORBackgroundIdentifierInvalid) {
+    GDTCORLogDebug(@"Ending background task with ID:%ld was successful", (long)bgID);
+    [[self sharedApplicationForBackgroundTask] endBackgroundTask:bgID];
+    return;
+  }
+#elif TARGET_OS_WATCH
+  if (bgID != GDTCORBackgroundIdentifierInvalid) {
+    dispatch_semaphore_t semaphore = [GDTCORApplication semaphoreForBackgroundIdentifier:bgID];
+    GDTCORLogDebug(@"Ending activity with bgID:%ld on watchOS.", (long)bgID);
+    if (semaphore) {
+      dispatch_semaphore_signal(semaphore);
+      GDTCORLogDebug(@"Signaling semaphore with bgID:%ld on watchOS.", (long)bgID);
+    } else {
+      GDTCORLogDebug(@"Semaphore with bgID:%ld is nil on watchOS.", (long)bgID);
+    }
+  }
+#endif  // !TARGET_OS_WATCH
+}
+
+#pragma mark - App environment helpers
+
+- (BOOL)isAppExtension {
+  BOOL appExtension = [[[NSBundle mainBundle] bundlePath] hasSuffix:@".appex"];
+  return appExtension;
+}
+
+/** Returns a UIApplication or NSProcessInfo instance if on the appropriate platform.
+ *
+ * @return The shared UIApplication or NSProcessInfo if on the appropriate platform.
+ */
+#if TARGET_OS_IOS || TARGET_OS_TV
+- (nullable UIApplication *)sharedApplicationForBackgroundTask {
+#elif TARGET_OS_WATCH
+- (nullable NSProcessInfo *)sharedNSProcessInfoForBackgroundTask {
+#else
+- (nullable id)sharedApplicationForBackgroundTask {
+#endif
+  id sharedInstance = nil;
+#if TARGET_OS_IOS || TARGET_OS_TV
+  if (![self isAppExtension]) {
+    Class uiApplicationClass = NSClassFromString(@"UIApplication");
+    if (uiApplicationClass &&
+        [uiApplicationClass respondsToSelector:(NSSelectorFromString(@"sharedApplication"))]) {
+      sharedInstance = [uiApplicationClass sharedApplication];
+    }
+  }
+#elif TARGET_OS_WATCH
+  sharedInstance = [NSProcessInfo processInfo];
+#endif
+  return sharedInstance;
+}
+
+#pragma mark - UIApplicationDelegate and WKExtensionDelegate
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+- (void)iOSApplicationDidEnterBackground:(NSNotification *)notif {
+  _isRunningInBackground = YES;
+
+  NSNotificationCenter *notifCenter = [NSNotificationCenter defaultCenter];
+  GDTCORLogDebug(@"%@", @"GDTCORPlatform is sending a notif that the app is backgrounding.");
+  [notifCenter postNotificationName:kGDTCORApplicationDidEnterBackgroundNotification object:nil];
+}
+
+- (void)iOSApplicationWillEnterForeground:(NSNotification *)notif {
+  _isRunningInBackground = NO;
+
+  NSNotificationCenter *notifCenter = [NSNotificationCenter defaultCenter];
+  GDTCORLogDebug(@"%@", @"GDTCORPlatform is sending a notif that the app is foregrounding.");
+  [notifCenter postNotificationName:kGDTCORApplicationWillEnterForegroundNotification object:nil];
+}
+#endif  // TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+
+#pragma mark - UIApplicationDelegate
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+- (void)iOSApplicationWillTerminate:(NSNotification *)notif {
+  NSNotificationCenter *notifCenter = [NSNotificationCenter defaultCenter];
+  GDTCORLogDebug(@"%@", @"GDTCORPlatform is sending a notif that the app is terminating.");
+  [notifCenter postNotificationName:kGDTCORApplicationWillTerminateNotification object:nil];
+}
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#pragma mark - NSApplicationDelegate
+
+#if TARGET_OS_OSX
+- (void)macOSApplicationWillTerminate:(NSNotification *)notif {
+  NSNotificationCenter *notifCenter = [NSNotificationCenter defaultCenter];
+  GDTCORLogDebug(@"%@", @"GDTCORPlatform is sending a notif that the app is terminating.");
+  [notifCenter postNotificationName:kGDTCORApplicationWillTerminateNotification object:nil];
+}
+#endif  // TARGET_OS_OSX
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORReachability.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORReachability.m
new file mode 100644
index 0000000..43811e6
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORReachability.m	
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORReachability_Private.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+#import <netinet/in.h>
+
+/** Sets the _callbackFlag ivar whenever the network changes.
+ *
+ * @param reachability The reachability object calling back.
+ * @param flags The new flag values.
+ * @param info Any data that might be passed in by the callback.
+ */
+static void GDTCORReachabilityCallback(GDTCORNetworkReachabilityRef reachability,
+                                       GDTCORNetworkReachabilityFlags flags,
+                                       void *info);
+
+@implementation GDTCORReachability {
+  /** The reachability object. */
+  GDTCORNetworkReachabilityRef _reachabilityRef;
+
+  /** The queue on which callbacks and all work will occur. */
+  dispatch_queue_t _reachabilityQueue;
+
+  /** Flags specified by reachability callbacks. */
+  GDTCORNetworkReachabilityFlags _callbackFlags;
+}
+
++ (void)initialize {
+  [self sharedInstance];
+}
+
++ (instancetype)sharedInstance {
+  static GDTCORReachability *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[GDTCORReachability alloc] init];
+  });
+  return sharedInstance;
+}
+
++ (GDTCORNetworkReachabilityFlags)currentFlags {
+  __block GDTCORNetworkReachabilityFlags currentFlags;
+#if !TARGET_OS_WATCH
+  dispatch_sync([GDTCORReachability sharedInstance] -> _reachabilityQueue, ^{
+    GDTCORReachability *reachability = [GDTCORReachability sharedInstance];
+    currentFlags =
+        reachability->_callbackFlags ? reachability->_callbackFlags : reachability->_flags;
+    GDTCORLogDebug(@"Initial reachability flags determined: %d", currentFlags);
+  });
+#else
+  currentFlags = kGDTCORNetworkReachabilityFlagsReachable;
+#endif
+  return currentFlags;
+}
+
+- (instancetype)init {
+  self = [super init];
+#if !TARGET_OS_WATCH
+  if (self) {
+    struct sockaddr_in zeroAddress;
+    bzero(&zeroAddress, sizeof(zeroAddress));
+    zeroAddress.sin_len = sizeof(zeroAddress);
+    zeroAddress.sin_family = AF_INET;
+
+    _reachabilityQueue =
+        dispatch_queue_create("com.google.GDTCORReachability", DISPATCH_QUEUE_SERIAL);
+    _reachabilityRef = SCNetworkReachabilityCreateWithAddress(
+        kCFAllocatorDefault, (const struct sockaddr *)&zeroAddress);
+    Boolean success = SCNetworkReachabilitySetDispatchQueue(_reachabilityRef, _reachabilityQueue);
+    if (!success) {
+      GDTCORLogWarning(GDTCORMCWReachabilityFailed, @"%@", @"The reachability queue wasn't set.");
+    }
+    success = SCNetworkReachabilitySetCallback(_reachabilityRef, GDTCORReachabilityCallback, NULL);
+    if (!success) {
+      GDTCORLogWarning(GDTCORMCWReachabilityFailed, @"%@",
+                       @"The reachability callback wasn't set.");
+    }
+
+    // Get the initial set of flags.
+    dispatch_async(_reachabilityQueue, ^{
+      Boolean valid = SCNetworkReachabilityGetFlags(self->_reachabilityRef, &self->_flags);
+      if (!valid) {
+        GDTCORLogDebug(@"%@", @"Determining reachability failed.");
+        self->_flags = 0;
+      }
+    });
+  }
+#endif
+  return self;
+}
+
+- (void)setCallbackFlags:(GDTCORNetworkReachabilityFlags)flags {
+  if (_callbackFlags != flags) {
+    self->_callbackFlags = flags;
+  }
+}
+
+@end
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-function"
+static void GDTCORReachabilityCallback(GDTCORNetworkReachabilityRef reachability,
+                                       GDTCORNetworkReachabilityFlags flags,
+                                       void *info) {
+#pragma clang diagnostic pop
+  GDTCORLogDebug(@"Reachability changed, new flags: %d", flags);
+  [[GDTCORReachability sharedInstance] setCallbackFlags:flags];
+}
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORRegistrar.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORRegistrar.m
new file mode 100644
index 0000000..d7e9b09
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORRegistrar.m	
@@ -0,0 +1,157 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+id<GDTCORStorageProtocol> _Nullable GDTCORStorageInstanceForTarget(GDTCORTarget target) {
+  return [GDTCORRegistrar sharedInstance].targetToStorage[@(target)];
+}
+
+FOUNDATION_EXPORT
+id<GDTCORStoragePromiseProtocol> _Nullable GDTCORStoragePromiseInstanceForTarget(
+    GDTCORTarget target) {
+  id storage = [GDTCORRegistrar sharedInstance].targetToStorage[@(target)];
+  if ([storage conformsToProtocol:@protocol(GDTCORStoragePromiseProtocol)]) {
+    return storage;
+  } else {
+    return nil;
+  }
+}
+
+@implementation GDTCORRegistrar {
+  /** Backing ivar for targetToUploader property. */
+  NSMutableDictionary<NSNumber *, id<GDTCORUploader>> *_targetToUploader;
+
+  /** Backing ivar for targetToStorage property. */
+  NSMutableDictionary<NSNumber *, id<GDTCORStorageProtocol>> *_targetToStorage;
+}
+
++ (instancetype)sharedInstance {
+  static GDTCORRegistrar *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [[GDTCORRegistrar alloc] init];
+  });
+  return sharedInstance;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _registrarQueue = dispatch_queue_create("com.google.GDTCORRegistrar", DISPATCH_QUEUE_SERIAL);
+    _targetToUploader = [[NSMutableDictionary alloc] init];
+    _targetToStorage = [[NSMutableDictionary alloc] init];
+  }
+  return self;
+}
+
+- (void)registerUploader:(id<GDTCORUploader>)backend target:(GDTCORTarget)target {
+  __weak GDTCORRegistrar *weakSelf = self;
+  dispatch_async(_registrarQueue, ^{
+    GDTCORRegistrar *strongSelf = weakSelf;
+    if (strongSelf) {
+      GDTCORLogDebug(@"Registered an uploader: %@ for target:%ld", backend, (long)target);
+      strongSelf->_targetToUploader[@(target)] = backend;
+    }
+  });
+}
+
+- (void)registerStorage:(id<GDTCORStorageProtocol>)storage target:(GDTCORTarget)target {
+  __weak GDTCORRegistrar *weakSelf = self;
+  dispatch_async(_registrarQueue, ^{
+    GDTCORRegistrar *strongSelf = weakSelf;
+    if (strongSelf) {
+      GDTCORLogDebug(@"Registered storage: %@ for target:%ld", storage, (long)target);
+      strongSelf->_targetToStorage[@(target)] = storage;
+    }
+  });
+}
+
+- (NSMutableDictionary<NSNumber *, id<GDTCORUploader>> *)targetToUploader {
+  __block NSMutableDictionary<NSNumber *, id<GDTCORUploader>> *targetToUploader;
+  __weak GDTCORRegistrar *weakSelf = self;
+  dispatch_sync(_registrarQueue, ^{
+    GDTCORRegistrar *strongSelf = weakSelf;
+    if (strongSelf) {
+      targetToUploader = strongSelf->_targetToUploader;
+    }
+  });
+  return targetToUploader;
+}
+
+- (NSMutableDictionary<NSNumber *, id<GDTCORStorageProtocol>> *)targetToStorage {
+  __block NSMutableDictionary<NSNumber *, id<GDTCORStorageProtocol>> *targetToStorage;
+  __weak GDTCORRegistrar *weakSelf = self;
+  dispatch_sync(_registrarQueue, ^{
+    GDTCORRegistrar *strongSelf = weakSelf;
+    if (strongSelf) {
+      targetToStorage = strongSelf->_targetToStorage;
+    }
+  });
+  return targetToStorage;
+}
+
+#pragma mark - GDTCORLifecycleProtocol
+
+- (void)appWillBackground:(nonnull GDTCORApplication *)app {
+  NSArray<id<GDTCORUploader>> *uploaders = [self.targetToUploader allValues];
+  for (id<GDTCORUploader> uploader in uploaders) {
+    if ([uploader respondsToSelector:@selector(appWillBackground:)]) {
+      [uploader appWillBackground:app];
+    }
+  }
+  NSArray<id<GDTCORStorageProtocol>> *storages = [self.targetToStorage allValues];
+  for (id<GDTCORStorageProtocol> storage in storages) {
+    if ([storage respondsToSelector:@selector(appWillBackground:)]) {
+      [storage appWillBackground:app];
+    }
+  }
+}
+
+- (void)appWillForeground:(nonnull GDTCORApplication *)app {
+  NSArray<id<GDTCORUploader>> *uploaders = [self.targetToUploader allValues];
+  for (id<GDTCORUploader> uploader in uploaders) {
+    if ([uploader respondsToSelector:@selector(appWillForeground:)]) {
+      [uploader appWillForeground:app];
+    }
+  }
+  NSArray<id<GDTCORStorageProtocol>> *storages = [self.targetToStorage allValues];
+  for (id<GDTCORStorageProtocol> storage in storages) {
+    if ([storage respondsToSelector:@selector(appWillForeground:)]) {
+      [storage appWillForeground:app];
+    }
+  }
+}
+
+- (void)appWillTerminate:(nonnull GDTCORApplication *)app {
+  NSArray<id<GDTCORUploader>> *uploaders = [self.targetToUploader allValues];
+  for (id<GDTCORUploader> uploader in uploaders) {
+    if ([uploader respondsToSelector:@selector(appWillTerminate:)]) {
+      [uploader appWillTerminate:app];
+    }
+  }
+  NSArray<id<GDTCORStorageProtocol>> *storages = [self.targetToStorage allValues];
+  for (id<GDTCORStorageProtocol> storage in storages) {
+    if ([storage respondsToSelector:@selector(appWillTerminate:)]) {
+      [storage appWillTerminate:app];
+    }
+  }
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORStorageEventSelector.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORStorageEventSelector.m
new file mode 100644
index 0000000..30915da
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORStorageEventSelector.m	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h"
+
+@implementation GDTCORStorageEventSelector
+
++ (instancetype)eventSelectorForTarget:(GDTCORTarget)target {
+  return [[self alloc] initWithTarget:target eventIDs:nil mappingIDs:nil qosTiers:nil];
+}
+
+- (instancetype)initWithTarget:(GDTCORTarget)target
+                      eventIDs:(nullable NSSet<NSString *> *)eventIDs
+                    mappingIDs:(nullable NSSet<NSString *> *)mappingIDs
+                      qosTiers:(nullable NSSet<NSNumber *> *)qosTiers {
+  self = [super init];
+  if (self) {
+    _selectedTarget = target;
+    _selectedEventIDs = eventIDs;
+    _selectedMappingIDs = mappingIDs;
+    _selectedQosTiers = qosTiers;
+  }
+  return self;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransformer.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransformer.m
new file mode 100644
index 0000000..b6d0249
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransformer.m	
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer_Private.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventTransformer.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+
+@implementation GDTCORTransformer
+
++ (instancetype)sharedInstance {
+  static GDTCORTransformer *eventTransformer;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    eventTransformer = [[self alloc] init];
+  });
+  return eventTransformer;
+}
+
+- (instancetype)init {
+  return [self initWithApplication:[GDTCORApplication sharedApplication]];
+}
+
+- (instancetype)initWithApplication:(id<GDTCORApplicationProtocol>)application {
+  self = [super init];
+  if (self) {
+    _eventWritingQueue =
+        dispatch_queue_create("com.google.GDTCORTransformer", DISPATCH_QUEUE_SERIAL);
+    _application = application;
+  }
+  return self;
+}
+
+- (void)transformEvent:(GDTCOREvent *)event
+      withTransformers:(NSArray<id<GDTCOREventTransformer>> *)transformers
+            onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion {
+  GDTCORAssert(event, @"You can't write a nil event");
+
+  __block GDTCORBackgroundIdentifier bgID = GDTCORBackgroundIdentifierInvalid;
+  __auto_type __weak weakApplication = self.application;
+  bgID = [self.application beginBackgroundTaskWithName:@"GDTTransformer"
+                                     expirationHandler:^{
+                                       [weakApplication endBackgroundTask:bgID];
+                                       bgID = GDTCORBackgroundIdentifierInvalid;
+                                     }];
+
+  __auto_type completionWrapper = ^(BOOL wasWritten, NSError *_Nullable error) {
+    if (completion) {
+      completion(wasWritten, error);
+    }
+
+    // The work is done, cancel the background task if it's valid.
+    [weakApplication endBackgroundTask:bgID];
+    bgID = GDTCORBackgroundIdentifierInvalid;
+  };
+
+  dispatch_async(_eventWritingQueue, ^{
+    GDTCOREvent *transformedEvent = event;
+    for (id<GDTCOREventTransformer> transformer in transformers) {
+      if ([transformer respondsToSelector:@selector(transformGDTEvent:)]) {
+        GDTCORLogDebug(@"Applying a transformer to event %@", event);
+        transformedEvent = [transformer transformGDTEvent:event];
+        if (!transformedEvent) {
+          completionWrapper(NO, nil);
+          return;
+        }
+      } else {
+        GDTCORLogError(GDTCORMCETransformerDoesntImplementTransform,
+                       @"Transformer doesn't implement transformGDTEvent: %@", transformer);
+        completionWrapper(NO, nil);
+        return;
+      }
+    }
+
+    id<GDTCORStorageProtocol> storage =
+        [GDTCORRegistrar sharedInstance].targetToStorage[@(event.target)];
+
+    [storage storeEvent:transformedEvent onComplete:completionWrapper];
+  });
+}
+
+#pragma mark - GDTCORLifecycleProtocol
+
+- (void)appWillTerminate:(GDTCORApplication *)application {
+  // Flush the queue immediately.
+  dispatch_sync(_eventWritingQueue, ^{
+                });
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransport.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransport.m
new file mode 100644
index 0000000..1db4d52
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORTransport.m	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTransport.h"
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransport_Private.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h"
+
+@implementation GDTCORTransport
+
+- (nullable instancetype)initWithMappingID:(NSString *)mappingID
+                              transformers:
+                                  (nullable NSArray<id<GDTCOREventTransformer>> *)transformers
+                                    target:(GDTCORTarget)target {
+  GDTCORAssert(mappingID.length > 0, @"A mapping ID cannot be nil or empty");
+  GDTCORAssert(target > 0, @"A target cannot be negative or 0");
+  if (mappingID == nil || mappingID.length == 0 || target <= 0) {
+    return nil;
+  }
+  self = [super init];
+  if (self) {
+    _mappingID = mappingID;
+    _transformers = transformers;
+    _target = target;
+    _transformerInstance = [GDTCORTransformer sharedInstance];
+  }
+  GDTCORLogDebug(@"Transport object created. mappingID:%@ transformers:%@ target:%ld", mappingID,
+                 transformers, (long)target);
+  return self;
+}
+
+- (void)sendTelemetryEvent:(GDTCOREvent *)event
+                onComplete:
+                    (void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion {
+  event.qosTier = GDTCOREventQoSTelemetry;
+  [self sendEvent:event onComplete:completion];
+}
+
+- (void)sendDataEvent:(GDTCOREvent *)event
+           onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion {
+  GDTCORAssert(event.qosTier != GDTCOREventQoSTelemetry, @"Use -sendTelemetryEvent, please.");
+  [self sendEvent:event onComplete:completion];
+}
+
+- (void)sendTelemetryEvent:(GDTCOREvent *)event {
+  [self sendTelemetryEvent:event onComplete:nil];
+}
+
+- (void)sendDataEvent:(GDTCOREvent *)event {
+  [self sendDataEvent:event onComplete:nil];
+}
+
+- (GDTCOREvent *)eventForTransport {
+  return [[GDTCOREvent alloc] initWithMappingID:_mappingID target:_target];
+}
+
+#pragma mark - Private helper methods
+
+/** Sends the given event through the transport pipeline.
+ *
+ * @param event The event to send.
+ * @param completion A block that will be called when the event has been written or dropped.
+ */
+- (void)sendEvent:(GDTCOREvent *)event
+       onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion {
+  // TODO: Determine if sending an event before registration is allowed.
+  GDTCORAssert(event, @"You can't send a nil event");
+  GDTCOREvent *copiedEvent = [event copy];
+  copiedEvent.clockSnapshot = [GDTCORClock snapshot];
+  [self.transformerInstance transformEvent:copiedEvent
+                          withTransformers:_transformers
+                                onComplete:completion];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadBatch.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadBatch.m
new file mode 100644
index 0000000..7d2abe2
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadBatch.m	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h"
+
+@implementation GDTCORUploadBatch
+
+- (instancetype)initWithBatchID:(NSNumber *)batchID events:(NSSet<GDTCOREvent *> *)events {
+  self = [super init];
+  if (self) {
+    _batchID = batchID;
+    _events = events;
+  }
+  return self;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadCoordinator.m b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadCoordinator.m
new file mode 100644
index 0000000..3357fbe
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/GDTCORUploadCoordinator.m	
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h"
+
+@implementation GDTCORUploadCoordinator
+
++ (instancetype)sharedInstance {
+  static GDTCORUploadCoordinator *sharedUploader;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedUploader = [[GDTCORUploadCoordinator alloc] init];
+    [sharedUploader startTimer];
+  });
+  return sharedUploader;
+}
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _coordinationQueue =
+        dispatch_queue_create("com.google.GDTCORUploadCoordinator", DISPATCH_QUEUE_SERIAL);
+    _registrar = [GDTCORRegistrar sharedInstance];
+    _timerInterval = 30 * NSEC_PER_SEC;
+    _timerLeeway = 5 * NSEC_PER_SEC;
+  }
+  return self;
+}
+
+- (void)forceUploadForTarget:(GDTCORTarget)target {
+  dispatch_async(_coordinationQueue, ^{
+    GDTCORLogDebug(@"Forcing an upload of target %ld", (long)target);
+    GDTCORUploadConditions conditions = [self uploadConditions];
+    conditions |= GDTCORUploadConditionHighPriority;
+    [self uploadTargets:@[ @(target) ] conditions:conditions];
+  });
+}
+
+#pragma mark - Private helper methods
+
+/** Starts a timer that checks whether or not events can be uploaded at regular intervals. It will
+ * check the next-upload clocks of all targets to determine if an upload attempt can be made.
+ */
+- (void)startTimer {
+  dispatch_async(_coordinationQueue, ^{
+    if (self->_timer) {
+      // The timer has been already started.
+      return;
+    }
+
+    // Delay the timer slightly so it doesn't run while +load calls are still running.
+    dispatch_time_t deadline = dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC / 2);
+
+    self->_timer =
+        dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, self->_coordinationQueue);
+    dispatch_source_set_timer(self->_timer, deadline, self->_timerInterval, self->_timerLeeway);
+
+    dispatch_source_set_event_handler(self->_timer, ^{
+      if (![[GDTCORApplication sharedApplication] isRunningInBackground]) {
+        GDTCORUploadConditions conditions = [self uploadConditions];
+        GDTCORLogDebug(@"%@", @"Upload timer fired");
+        [self uploadTargets:[self.registrar.targetToUploader allKeys] conditions:conditions];
+      }
+    });
+    GDTCORLogDebug(@"%@", @"Upload timer started");
+    dispatch_resume(self->_timer);
+  });
+}
+
+/** Stops the currently running timer. */
+- (void)stopTimer {
+  if (_timer) {
+    dispatch_source_cancel(_timer);
+    _timer = nil;
+  }
+}
+
+/** Triggers the uploader implementations for the given targets to upload.
+ *
+ * @param targets An array of targets to trigger.
+ * @param conditions The set of upload conditions.
+ */
+- (void)uploadTargets:(NSArray<NSNumber *> *)targets conditions:(GDTCORUploadConditions)conditions {
+  dispatch_async(_coordinationQueue, ^{
+    // TODO: The reachability signal may be not reliable enough to prevent an upload attempt.
+    // See https://developer.apple.com/videos/play/wwdc2019/712/ (49:40) for more details.
+    if ((conditions & GDTCORUploadConditionNoNetwork) == GDTCORUploadConditionNoNetwork) {
+      return;
+    }
+    for (NSNumber *target in targets) {
+      id<GDTCORUploader> uploader = self->_registrar.targetToUploader[target];
+      [uploader uploadTarget:target.intValue withConditions:conditions];
+    }
+  });
+}
+
+- (void)signalToStoragesToCheckExpirations {
+  // The same storage may be associated with several targets. Make sure to check for expirations
+  // only once per storage.
+  NSSet<id<GDTCORStorageProtocol>> *storages =
+      [NSSet setWithArray:[_registrar.targetToStorage allValues]];
+  for (id<GDTCORStorageProtocol> storage in storages) {
+    [storage checkForExpirations];
+  }
+}
+
+/** Returns the registered storage for the given NSNumber wrapped GDTCORTarget.
+ *
+ * @param target The NSNumber wrapping of a GDTCORTarget to find the storage instance of.
+ * @return The storage instance for the given target.
+ */
+- (nullable id<GDTCORStorageProtocol>)storageForTarget:(NSNumber *)target {
+  id<GDTCORStorageProtocol> storage = [GDTCORRegistrar sharedInstance].targetToStorage[target];
+  GDTCORAssert(storage, @"A storage must be registered for target %@", target);
+  return storage;
+}
+
+/** Returns the current upload conditions after making determinations about the network connection.
+ *
+ * @return The current upload conditions.
+ */
+- (GDTCORUploadConditions)uploadConditions {
+  GDTCORNetworkReachabilityFlags currentFlags = [GDTCORReachability currentFlags];
+  BOOL networkConnected = GDTCORReachabilityFlagsReachable(currentFlags);
+  if (!networkConnected) {
+    return GDTCORUploadConditionNoNetwork;
+  }
+  BOOL isWWAN = GDTCORReachabilityFlagsContainWWAN(currentFlags);
+  if (isWWAN) {
+    return GDTCORUploadConditionMobileData;
+  } else {
+    return GDTCORUploadConditionWifiData;
+  }
+}
+
+#pragma mark - GDTCORLifecycleProtocol
+
+- (void)appWillForeground:(GDTCORApplication *)app {
+  // -startTimer is thread-safe.
+  [self startTimer];
+  [self signalToStoragesToCheckExpirations];
+}
+
+- (void)appWillBackground:(GDTCORApplication *)app {
+  dispatch_async(_coordinationQueue, ^{
+    [self stopTimer];
+  });
+}
+
+- (void)appWillTerminate:(GDTCORApplication *)application {
+  dispatch_sync(_coordinationQueue, ^{
+    [self stopTimer];
+  });
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h
new file mode 100644
index 0000000..e158a5a
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORAssert.h	
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A block type that could be run instead of normal assertion logging. No return type, no params.
+ */
+typedef void (^GDTCORAssertionBlock)(void);
+
+/** Returns the result of executing a soft-linked method present in unit tests that allows a block
+ * to be run instead of normal assertion logging. This helps ameliorate issues with catching
+ * exceptions that occur on a dispatch_queue.
+ *
+ * @return A block that can be run instead of normal assert printing.
+ */
+FOUNDATION_EXPORT GDTCORAssertionBlock _Nullable GDTCORAssertionBlockToRunInstead(void);
+
+#if defined(NS_BLOCK_ASSERTIONS)
+
+#define GDTCORAssert(condition, ...) \
+  do {                               \
+  } while (0);
+
+#define GDTCORFatalAssert(condition, ...) \
+  do {                                    \
+  } while (0);
+
+#else  // defined(NS_BLOCK_ASSERTIONS)
+
+/** Asserts using a console log, unless a block was specified to be run instead.
+ *
+ * @param condition The condition you'd expect to be YES.
+ */
+#define GDTCORAssert(condition, format, ...)                                     \
+  do {                                                                           \
+    __PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS                                          \
+    if (__builtin_expect(!(condition), 0)) {                                     \
+      GDTCORAssertionBlock assertionBlock = GDTCORAssertionBlockToRunInstead();  \
+      if (assertionBlock) {                                                      \
+        assertionBlock();                                                        \
+      } else {                                                                   \
+        NSString *__assert_file__ = [NSString stringWithUTF8String:__FILE__];    \
+        __assert_file__ = __assert_file__ ? __assert_file__ : @"<Unknown File>"; \
+        GDTCORLogAssert(NO, __assert_file__, __LINE__, format, ##__VA_ARGS__);   \
+        __PRAGMA_POP_NO_EXTRA_ARG_WARNINGS                                       \
+      }                                                                          \
+    }                                                                            \
+  } while (0);
+
+/** Asserts by logging to the console and throwing an exception if NS_BLOCK_ASSERTIONS is not
+ * defined.
+ *
+ * @param condition The condition you'd expect to be YES.
+ */
+#define GDTCORFatalAssert(condition, format, ...)                                          \
+  do {                                                                                     \
+    __PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS                                                    \
+    if (__builtin_expect(!(condition), 0)) {                                               \
+      GDTCORAssertionBlock assertionBlock = GDTCORAssertionBlockToRunInstead();            \
+      if (assertionBlock) {                                                                \
+        assertionBlock();                                                                  \
+      } else {                                                                             \
+        NSString *__assert_file__ = [NSString stringWithUTF8String:__FILE__];              \
+        __assert_file__ = __assert_file__ ? __assert_file__ : @"<Unknown File>";           \
+        GDTCORLogAssert(YES, __assert_file__, __LINE__, format, ##__VA_ARGS__);            \
+        [[NSAssertionHandler currentHandler] handleFailureInMethod:_cmd                    \
+                                                            object:self                    \
+                                                              file:__assert_file__         \
+                                                        lineNumber:__LINE__                \
+                                                       description:format, ##__VA_ARGS__]; \
+        __PRAGMA_POP_NO_EXTRA_ARG_WARNINGS                                                 \
+      }                                                                                    \
+    }                                                                                      \
+  } while (0);
+
+#endif  // defined(NS_BLOCK_ASSERTIONS)
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORDirectorySizeTracker.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORDirectorySizeTracker.h
new file mode 100644
index 0000000..a6fa8a3
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORDirectorySizeTracker.h	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The class calculates and caches the specified directory content size and uses add/remove signals
+ *  from client the client to keep the size up to date without accessing file system.
+ *  This is an internal class designed to be used by `GDTCORFlatFileStorage`.
+ *  NOTE: The class is not thread-safe. The client must take care of synchronization.
+ */
+@interface GDTCORDirectorySizeTracker : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/** Initializes the object with a directory path.
+ * @param path The directory path to track content size.
+ */
+- (instancetype)initWithDirectoryPath:(NSString *)path;
+
+/** Returns a cached or calculates (if there is no cached) directory content size.
+ * @return The directory content size in bytes calculated based on `NSURLFileSizeKey`.
+ */
+- (GDTCORStorageSizeBytes)directoryContentSize;
+
+/** The client must call this method or `resetCachedSize` method each time a file or directory is
+ * added to the tracked directory.
+ *  @param path The path to the added file. If the path is outside the tracked directory then the
+ *  @param fileSize The size of the added file.
+ * method is no-op.
+ */
+- (void)fileWasAddedAtPath:(NSString *)path withSize:(GDTCORStorageSizeBytes)fileSize;
+
+/** The client must call this method or `resetCachedSize` method each time a file or directory is
+ * removed from the tracked directory.
+ *  @param path The path to the removed file. If the path is outside the tracked directory then the
+ *  @param fileSize The size of the removed file.
+ * method is no-op.
+ */
+- (void)fileWasRemovedAtPath:(NSString *)path withSize:(GDTCORStorageSizeBytes)fileSize;
+
+/** Invalidates cached directory size. */
+- (void)resetCachedSize;
+
+/** Returns URL resource value for `NSURLFileSizeKey` key for the specified URL. */
+- (GDTCORStorageSizeBytes)fileSizeAtURL:(NSURL *)fileURL;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h
new file mode 100644
index 0000000..3d77970
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h	
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+
+@class GDTCOREvent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** A protocol defining the lifecycle events objects in the library must respond to immediately. */
+@protocol GDTCORLifecycleProtocol <NSObject>
+
+@optional
+
+/** Indicates an imminent app termination in the rare occurrence when -applicationWillTerminate: has
+ * been called.
+ *
+ * @param app The GDTCORApplication instance.
+ */
+- (void)appWillTerminate:(GDTCORApplication *)app;
+
+/** Indicates that the app is moving to background and eventual suspension or the current UIScene is
+ * deactivating.
+ *
+ * @param app The GDTCORApplication instance.
+ */
+- (void)appWillBackground:(GDTCORApplication *)app;
+
+/** Indicates that the app is resuming operation or a UIScene is activating.
+ *
+ * @param app The GDTCORApplication instance.
+ */
+- (void)appWillForeground:(GDTCORApplication *)app;
+
+@end
+
+/** This class manages the library's response to app lifecycle events.
+ *
+ * When backgrounding, the library doesn't stop processing events, it's just that several background
+ * tasks will end up being created for every event that's sent, and the stateful objects of the
+ * library (GDTCORStorage and GDTCORUploadCoordinator instances) will deserialize themselves from
+ * and to disk before and after every operation, respectively.
+ */
+@interface GDTCORLifecycle : NSObject <GDTCORApplicationDelegate>
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h
new file mode 100644
index 0000000..44252ab
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h	
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+#endif
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_OSX
+#import <AppKit/AppKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#if TARGET_OS_IOS
+#import <CoreTelephony/CTTelephonyNetworkInfo.h>
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The GoogleDataTransport library version. */
+FOUNDATION_EXPORT NSString *const kGDTCORVersion;
+
+/** A notification sent out if the app is backgrounding. */
+FOUNDATION_EXPORT NSString *const kGDTCORApplicationDidEnterBackgroundNotification;
+
+/** A notification sent out if the app is foregrounding. */
+FOUNDATION_EXPORT NSString *const kGDTCORApplicationWillEnterForegroundNotification;
+
+/** A notification sent out if the app is terminating. */
+FOUNDATION_EXPORT NSString *const kGDTCORApplicationWillTerminateNotification;
+
+/** The different possible network connection type. */
+typedef NS_ENUM(NSInteger, GDTCORNetworkType) {
+  GDTCORNetworkTypeUNKNOWN = 0,
+  GDTCORNetworkTypeWIFI = 1,
+  GDTCORNetworkTypeMobile = 2,
+};
+
+/** The different possible network connection mobile subtype. */
+typedef NS_ENUM(NSInteger, GDTCORNetworkMobileSubtype) {
+  GDTCORNetworkMobileSubtypeUNKNOWN = 0,
+  GDTCORNetworkMobileSubtypeGPRS = 1,
+  GDTCORNetworkMobileSubtypeEdge = 2,
+  GDTCORNetworkMobileSubtypeWCDMA = 3,
+  GDTCORNetworkMobileSubtypeHSDPA = 4,
+  GDTCORNetworkMobileSubtypeHSUPA = 5,
+  GDTCORNetworkMobileSubtypeCDMA1x = 6,
+  GDTCORNetworkMobileSubtypeCDMAEVDORev0 = 7,
+  GDTCORNetworkMobileSubtypeCDMAEVDORevA = 8,
+  GDTCORNetworkMobileSubtypeCDMAEVDORevB = 9,
+  GDTCORNetworkMobileSubtypeHRPD = 10,
+  GDTCORNetworkMobileSubtypeLTE = 11,
+};
+
+#if !TARGET_OS_WATCH
+/** Define SCNetworkReachabilityFlags as GDTCORNetworkReachabilityFlags on non-watchOS. */
+typedef SCNetworkReachabilityFlags GDTCORNetworkReachabilityFlags;
+
+/** Define SCNetworkReachabilityRef as GDTCORNetworkReachabilityRef on non-watchOS. */
+typedef SCNetworkReachabilityRef GDTCORNetworkReachabilityRef;
+
+#else
+/** The different possible reachabilityFlags option on watchOS. */
+typedef NS_OPTIONS(uint32_t, GDTCORNetworkReachabilityFlags) {
+  kGDTCORNetworkReachabilityFlagsReachable = 1 << 1,
+  // TODO(doudounan): Add more options on watchOS if watchOS network connection information relative
+  // APIs available in the future.
+};
+
+/** Define a struct as GDTCORNetworkReachabilityRef on watchOS to store network connection
+ * information. */
+typedef struct {
+  // TODO(doudounan): Store network connection information on watchOS if watchOS network connection
+  // information relative APIs available in the future.
+} GDTCORNetworkReachabilityRef;
+#endif
+
+/** Returns a URL to the root directory under which all GDT-associated data must be saved.
+ *
+ * @return A URL to the root directory under which all GDT-associated data must be saved.
+ */
+NSURL *GDTCORRootDirectory(void);
+
+/** Compares flags with the reachable flag (on non-watchos with both reachable and
+ * connectionRequired flags), if available, and returns YES if network reachable.
+ *
+ * @param flags The set of reachability flags.
+ * @return YES if the network is reachable, NO otherwise.
+ */
+BOOL GDTCORReachabilityFlagsReachable(GDTCORNetworkReachabilityFlags flags);
+
+/** Compares flags with the WWAN reachability flag, if available, and returns YES if present.
+ *
+ * @param flags The set of reachability flags.
+ * @return YES if the WWAN flag is set, NO otherwise.
+ */
+BOOL GDTCORReachabilityFlagsContainWWAN(GDTCORNetworkReachabilityFlags flags);
+
+/** Generates an enum message GDTCORNetworkType representing network connection type.
+ *
+ * @return A GDTCORNetworkType representing network connection type.
+ */
+GDTCORNetworkType GDTCORNetworkTypeMessage(void);
+
+/** Generates an enum message GDTCORNetworkMobileSubtype representing network connection mobile
+ * subtype.
+ *
+ * @return A GDTCORNetworkMobileSubtype representing network connection mobile subtype.
+ */
+GDTCORNetworkMobileSubtype GDTCORNetworkMobileSubTypeMessage(void);
+
+/** Identifies the model of the device on which the library is currently working on.
+ *
+ * @return A NSString representing the device model.
+ */
+NSString *_Nonnull GDTCORDeviceModel(void);
+
+/** Writes the given object to the given fileURL and populates the given error if it fails.
+ *
+ * @param obj The object to encode.
+ * @param filePath The path to write the object to. Can be nil if you just need the data.
+ * @param error The error to populate if something goes wrong.
+ * @return The data of the archive. If error is nil, it's been written to disk.
+ */
+NSData *_Nullable GDTCOREncodeArchive(id<NSSecureCoding> obj,
+                                      NSString *_Nullable filePath,
+                                      NSError *_Nullable *error);
+
+/** Decodes an object of the given class from the given archive path or data and populates the given
+ * error if it fails.
+ *
+ * @param archiveClass The class of the archive's root object.
+ * @param archivePath The path to the archived data. Don't use with the archiveData param.
+ * @param archiveData The data to decode. Don't use with the archivePath param.
+ * @param error The error to populate if something goes wrong.
+ */
+id<NSSecureCoding> _Nullable GDTCORDecodeArchive(Class archiveClass,
+                                                 NSString *_Nullable archivePath,
+                                                 NSData *_Nullable archiveData,
+                                                 NSError *_Nullable *error);
+
+/** Writes the provided data to a file at the provided  path. Intermediate directories will be
+ * created as needed.
+ *  @param data The file content.
+ *  @param filePath The path to the file to write the provided data.
+ *  @param outError The error to populate if something goes wrong.
+ *  @return `YES` in the case of success, `NO` otherwise.
+ */
+BOOL GDTCORWriteDataToFile(NSData *data, NSString *filePath, NSError *_Nullable *outError);
+
+/** A typedef identify background identifiers. */
+typedef volatile NSUInteger GDTCORBackgroundIdentifier;
+
+/** A background task's invalid sentinel value. */
+FOUNDATION_EXPORT const GDTCORBackgroundIdentifier GDTCORBackgroundIdentifierInvalid;
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+/** A protocol that wraps UIApplicationDelegate, WKExtensionDelegate or NSObject protocol, depending
+ * on the platform.
+ */
+@protocol GDTCORApplicationDelegate <UIApplicationDelegate>
+#elif TARGET_OS_OSX
+@protocol GDTCORApplicationDelegate <NSApplicationDelegate>
+#elif TARGET_OS_WATCH
+@protocol GDTCORApplicationDelegate <WKExtensionDelegate>
+#else
+@protocol GDTCORApplicationDelegate <NSObject>
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+@end
+
+@protocol GDTCORApplicationProtocol <NSObject>
+
+@required
+
+/** Flag to determine if the application is running in the background. */
+@property(atomic, readonly) BOOL isRunningInBackground;
+
+/** Creates a background task with the returned identifier if on a suitable platform.
+ *
+ * @name name The name of the task, useful for debugging which background tasks are running.
+ * @param handler The handler block that is called if the background task expires.
+ * @return An identifier for the background task, or GDTCORBackgroundIdentifierInvalid if one
+ * couldn't be created.
+ */
+- (GDTCORBackgroundIdentifier)beginBackgroundTaskWithName:(NSString *)name
+                                        expirationHandler:(void (^__nullable)(void))handler;
+
+/** Ends the background task if the identifier is valid.
+ *
+ * @param bgID The background task to end.
+ */
+- (void)endBackgroundTask:(GDTCORBackgroundIdentifier)bgID;
+
+@end
+
+/** A cross-platform application class. */
+@interface GDTCORApplication : NSObject <GDTCORApplicationProtocol, GDTCORApplicationDelegate>
+
+/** Creates and/or returns the shared application instance.
+ *
+ * @return The shared application instance.
+ */
++ (nullable GDTCORApplication *)sharedApplication;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h
new file mode 100644
index 0000000..eb89832
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORPlatform.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This class helps determine upload conditions by determining connectivity. */
+@interface GDTCORReachability : NSObject
+
+/** The current set flags indicating network conditions */
++ (GDTCORNetworkReachabilityFlags)currentFlags;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h
new file mode 100644
index 0000000..3ea521b
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Manages the registration of targets with the transport SDK. */
+@interface GDTCORRegistrar : NSObject <GDTCORLifecycleProtocol>
+
+/** Creates and/or returns the singleton instance.
+ *
+ * @return The singleton instance of this class.
+ */
++ (instancetype)sharedInstance;
+
+/** Registers a backend implementation with the GoogleDataTransport infrastructure.
+ *
+ * @param backend The backend object to register.
+ * @param target The target this backend object will be responsible for.
+ */
+- (void)registerUploader:(id<GDTCORUploader>)backend target:(GDTCORTarget)target;
+
+/** Registers a storage implementation with the GoogleDataTransport infrastructure.
+ *
+ * @param storage The storage instance to be associated with this uploader and target.
+ * @param target The target this backend object will be responsible for.
+ */
+- (void)registerStorage:(id<GDTCORStorageProtocol>)storage target:(GDTCORTarget)target;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h
new file mode 100644
index 0000000..7662d8b
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This class enables the finding of events by matching events with the properties of this class.
+ */
+@interface GDTCORStorageEventSelector : NSObject
+
+/** The target to find events for. Required. */
+@property(readonly, nonatomic) GDTCORTarget selectedTarget;
+
+/** Finds a specific event. */
+@property(nullable, readonly, nonatomic) NSSet<NSString *> *selectedEventIDs;
+
+/** Finds all events of a mappingID. */
+@property(nullable, readonly, nonatomic) NSSet<NSString *> *selectedMappingIDs;
+
+/** Finds all events matching the qosTiers in this list. */
+@property(nullable, readonly, nonatomic) NSSet<NSNumber *> *selectedQosTiers;
+
+/** Initializes an event selector that will find all events for the given target.
+ *
+ * @param target The selected target.
+ * @return An immutable event selector instance.
+ */
++ (instancetype)eventSelectorForTarget:(GDTCORTarget)target;
+
+/** Instantiates an event selector.
+ *
+ * @param target The selected target.
+ * @param eventIDs Optional param to find an event matching this eventID.
+ * @param mappingIDs Optional param to find events matching this mappingID.
+ * @param qosTiers Optional param to find events matching the given QoS tiers.
+ * @return An immutable event selector instance.
+ */
+- (instancetype)initWithTarget:(GDTCORTarget)target
+                      eventIDs:(nullable NSSet<NSString *> *)eventIDs
+                    mappingIDs:(nullable NSSet<NSString *> *)mappingIDs
+                      qosTiers:(nullable NSSet<NSNumber *> *)qosTiers;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h
new file mode 100644
index 0000000..ffccfdb
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h	
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h"
+
+@class GDTCOREvent;
+@class GDTCORClock;
+@class GDTCORUploadBatch;
+
+@class FBLPromise<ValueType>;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The data type to represent storage size. */
+typedef uint64_t GDTCORStorageSizeBytes;
+
+typedef void (^GDTCORStorageBatchBlock)(NSNumber *_Nullable newBatchID,
+                                        NSSet<GDTCOREvent *> *_Nullable batchEvents);
+
+/** Defines the interface a storage subsystem is expected to implement. */
+@protocol GDTCORStorageProtocol <NSObject, GDTCORLifecycleProtocol>
+
+@required
+
+/** Stores an event and calls onComplete with a non-nil error if anything went wrong.
+ *
+ * @param event The event to store
+ * @param completion The completion block to call after an attempt to store the event has been made.
+ */
+- (void)storeEvent:(GDTCOREvent *)event
+        onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion;
+
+/** Returns YES if some events have been stored for the given target, NO otherwise.
+ *
+ * @param onComplete The completion block to invoke when determining if there are events is done.
+ */
+- (void)hasEventsForTarget:(GDTCORTarget)target onComplete:(void (^)(BOOL hasEvents))onComplete;
+
+/** Constructs an event batch with the given event selector. Events in this batch will not be
+ * returned in any queries or other batches until the batch is removed.
+ *
+ * @param eventSelector The event selector used to find the events.
+ * @param expiration The expiration time of the batch. If removeBatchWithID:deleteEvents:onComplete:
+ * is not called within this time frame, the batch will be removed with its events deleted.
+ * @param onComplete The completion handler to be called when the events have been fetched.
+ */
+- (void)batchWithEventSelector:(nonnull GDTCORStorageEventSelector *)eventSelector
+               batchExpiration:(nonnull NSDate *)expiration
+                    onComplete:(nonnull GDTCORStorageBatchBlock)onComplete;
+
+/** Removes the event batch.
+ *
+ * @param batchID The batchID to remove.
+ * @param deleteEvents If YES, the events in this batch are deleted.
+ * @param onComplete The completion handler to call when the batch removal process has completed.
+ */
+- (void)removeBatchWithID:(NSNumber *)batchID
+             deleteEvents:(BOOL)deleteEvents
+               onComplete:(void (^_Nullable)(void))onComplete;
+
+/** Finds the batchIDs for the given target and calls the callback block.
+ *
+ * @param target The target.
+ * @param onComplete The block to invoke with the set of current batchIDs.
+ */
+- (void)batchIDsForTarget:(GDTCORTarget)target
+               onComplete:(void (^)(NSSet<NSNumber *> *_Nullable batchIDs))onComplete;
+
+/** Checks the storage for expired events and batches, deletes them if they're expired. */
+- (void)checkForExpirations;
+
+/** Persists the given data with the given key.
+ *
+ * @param data The data to store.
+ * @param key The unique key to store it to.
+ * @param onComplete An block to be run when storage of the data is complete.
+ */
+- (void)storeLibraryData:(NSData *)data
+                  forKey:(NSString *)key
+              onComplete:(nullable void (^)(NSError *_Nullable error))onComplete;
+
+/** Retrieves the stored data for the given key and optionally sets a new value.
+ *
+ * @param key The key corresponding to the desired data.
+ * @param onFetchComplete The callback to invoke with the data once it's retrieved.
+ * @param setValueBlock This optional block can provide a new value to set.
+ */
+- (void)libraryDataForKey:(nonnull NSString *)key
+          onFetchComplete:(nonnull void (^)(NSData *_Nullable data,
+                                            NSError *_Nullable error))onFetchComplete
+              setNewValue:(NSData *_Nullable (^_Nullable)(void))setValueBlock;
+
+/** Removes data from storage and calls the callback when complete.
+ *
+ * @param key The key of the data to remove.
+ * @param onComplete The callback that will be invoked when removing the data is complete.
+ */
+- (void)removeLibraryDataForKey:(NSString *)key
+                     onComplete:(void (^)(NSError *_Nullable error))onComplete;
+
+/** Calculates and returns the total disk size that this storage consumes.
+ *
+ * @param onComplete The callback that will be invoked once storage size calculation is complete.
+ */
+- (void)storageSizeWithCallback:(void (^)(GDTCORStorageSizeBytes storageSize))onComplete;
+
+@end
+
+// TODO: Consider complete replacing block based API by promise API.
+
+/** Promise based version of API defined in GDTCORStorageProtocol. See API docs for corresponding
+ * methods in GDTCORStorageProtocol. */
+@protocol GDTCORStoragePromiseProtocol <GDTCORStorageProtocol>
+
+- (FBLPromise<NSSet<NSNumber *> *> *)batchIDsForTarget:(GDTCORTarget)target;
+
+- (FBLPromise<NSNull *> *)removeBatchWithID:(NSNumber *)batchID deleteEvents:(BOOL)deleteEvents;
+
+- (FBLPromise<NSNull *> *)removeBatchesWithIDs:(NSSet<NSNumber *> *)batchIDs
+                                  deleteEvents:(BOOL)deleteEvents;
+
+- (FBLPromise<NSNull *> *)removeAllBatchesForTarget:(GDTCORTarget)target
+                                       deleteEvents:(BOOL)deleteEvents;
+
+/** See `hasEventsForTarget:onComplete:`.
+ *  @return A promise object that is resolved with @YES if there are events for the specified target
+ * and @NO otherwise.
+ */
+- (FBLPromise<NSNumber *> *)hasEventsForTarget:(GDTCORTarget)target;
+
+/** See `batchWithEventSelector:batchExpiration:onComplete:`
+ *  The promise is rejected when there are no events for the specified selector.
+ */
+- (FBLPromise<GDTCORUploadBatch *> *)batchWithEventSelector:
+                                         (GDTCORStorageEventSelector *)eventSelector
+                                            batchExpiration:(NSDate *)expiration;
+
+@end
+
+/** Retrieves the storage instance for the given target.
+ *
+ * @param target The target.
+ * * @return The storage instance registered for the target, or nil if there is none.
+ */
+FOUNDATION_EXPORT
+id<GDTCORStorageProtocol> _Nullable GDTCORStorageInstanceForTarget(GDTCORTarget target);
+
+// TODO: Ideally we should remove completion-based API and use promise-based one. Need to double
+// check if it's ok.
+FOUNDATION_EXPORT
+id<GDTCORStoragePromiseProtocol> _Nullable GDTCORStoragePromiseInstanceForTarget(
+    GDTCORTarget target);
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h
new file mode 100644
index 0000000..9b5343d
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Internal/GDTCORUploader.h	
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Options that define a set of upload conditions. This is used to help minimize end user data
+ * consumption impact.
+ */
+typedef NS_OPTIONS(NSInteger, GDTCORUploadConditions) {
+
+  /** An upload shouldn't be attempted, because there's no network. */
+  GDTCORUploadConditionNoNetwork = 1 << 0,
+
+  /** An upload would likely use mobile data. */
+  GDTCORUploadConditionMobileData = 1 << 1,
+
+  /** An upload would likely use wifi data. */
+  GDTCORUploadConditionWifiData = 1 << 2,
+
+  /** An upload uses some sort of network connection, but it's unclear which. */
+  GDTCORUploadConditionUnclearConnection = 1 << 3,
+
+  /** A high priority event has occurred. */
+  GDTCORUploadConditionHighPriority = 1 << 4,
+};
+
+/** This protocol defines the common interface for uploader implementations. */
+@protocol GDTCORUploader <NSObject, GDTCORLifecycleProtocol>
+
+@required
+
+/** Uploads events to the backend using this specific backend's chosen format.
+ *
+ * @param conditions The conditions that the upload attempt is likely to occur under.
+ */
+- (void)uploadTarget:(GDTCORTarget)target withConditions:(GDTCORUploadConditions)conditions;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREndpoints_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREndpoints_Private.h
new file mode 100644
index 0000000..4b1a903
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREndpoints_Private.h	
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h"
+
+@interface GDTCOREndpoints ()
+
+/** Returns the list of all the upload URLs used by the transport library.
+ *
+ *  @return Map of the transport target and the URL used for uploading the events for that target.
+ */
++ (NSDictionary<NSNumber *, NSURL *> *)uploadURLs;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h
new file mode 100644
index 0000000..e97eb31
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCOREvent_Private.h	
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h"
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GDTCOREvent ()
+
+/** The unique ID of the event. This property is for testing only. */
+@property(nonatomic, readwrite) NSString *eventID;
+
+/** Generates a unique event ID. */
++ (NSString *)nextEventID;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage+Promises.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage+Promises.h
new file mode 100644
index 0000000..66ea857
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage+Promises.h	
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage.h"
+
+@class FBLPromise<ValueType>;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// The category extends `GDTCORFlatFileStorage` API with `GDTCORStoragePromiseProtocol` methods.
+@interface GDTCORFlatFileStorage (Promises) <GDTCORStoragePromiseProtocol>
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage.h
new file mode 100644
index 0000000..09f1dae
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORFlatFileStorage.h	
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageEventSelector.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORStorageProtocol.h"
+
+@class GDTCOREvent;
+@class GDTCORUploadCoordinator;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The event components eventID dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCOREventComponentsEventIDKey;
+
+/** The event components qosTier dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCOREventComponentsQoSTierKey;
+
+/** The event components mappingID dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCOREventComponentsMappingIDKey;
+
+/** The event components expirationDate dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCOREventComponentsExpirationKey;
+
+/** The batch components target dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCORBatchComponentsTargetKey;
+
+/** The batch components batchID dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCORBatchComponentsBatchIDKey;
+
+/** The batch components expiration dictionary key. */
+FOUNDATION_EXPORT NSString *const kGDTCORBatchComponentsExpirationKey;
+
+/** The maximum allowed disk space taken by the stored data. */
+FOUNDATION_EXPORT const uint64_t kGDTCORFlatFileStorageSizeLimit;
+
+FOUNDATION_EXPORT NSString *const GDTCORFlatFileStorageErrorDomain;
+
+typedef NS_ENUM(NSInteger, GDTCORFlatFileStorageError) {
+  GDTCORFlatFileStorageErrorSizeLimitReached = 0
+};
+
+/** Manages the storage of events. This class is thread-safe.
+ *
+ * Event files will be stored as follows:
+ * <app cache>/google-sdk-events/<classname>/gdt_event_data/<target>/<eventID>.<qosTier>.<mappingID>
+ *
+ * Library data will be stored as follows:
+ * <app cache>/google-sdk-events/<classname>/gdt_library_data/<libraryDataKey>
+ *
+ * Batch data will be stored as follows:
+ * <app
+ * cache>/google-sdk-events/<classname>/gdt_batch_data/<target>.<batchID>/<eventID>.<qosTier>.<mappingID>
+ */
+@interface GDTCORFlatFileStorage : NSObject <GDTCORStorageProtocol, GDTCORLifecycleProtocol>
+
+/** The queue on which all storage work will occur. */
+@property(nonatomic) dispatch_queue_t storageQueue;
+
+/** The upload coordinator instance used by this storage instance. */
+@property(nonatomic) GDTCORUploadCoordinator *uploadCoordinator;
+
+/** Creates and/or returns the storage singleton.
+ *
+ * @return The storage singleton.
+ */
++ (instancetype)sharedInstance;
+
+/** Returns the base directory under which all events will be stored.
+ *
+ * @return The base directory under which all events will be stored.
+ */
++ (NSString *)eventDataStoragePath;
+
+/** Returns the base directory under which all library data will be stored.
+ *
+ * @return The base directory under which all library data will be stored.
+ */
++ (NSString *)libraryDataStoragePath;
+
+/** Returns the base directory under which all batch data will be stored.
+ *
+ * @return The base directory under which all batch data will be stored.
+ */
++ (NSString *)batchDataStoragePath;
+
+/** */
++ (NSString *)batchPathForTarget:(GDTCORTarget)target
+                         batchID:(NSNumber *)batchID
+                  expirationDate:(NSDate *)expirationDate;
+
+/** Returns a constructed storage path based on the given values. This path may not exist.
+ *
+ * @param target The target, which is necessary to be given a path.
+ * @param eventID The eventID.
+ * @param qosTier The qosTier.
+ * @param expirationDate The expirationDate as a 1970-relative time interval.
+ * @param mappingID The mappingID.
+ * @return The path representing the combination of the given parameters.
+ */
++ (NSString *)pathForTarget:(GDTCORTarget)target
+                    eventID:(NSString *)eventID
+                    qosTier:(NSNumber *)qosTier
+             expirationDate:(NSDate *)expirationDate
+                  mappingID:(NSString *)mappingID;
+
+/** Returns extant paths that match all of the given parameters.
+ *
+ * @param eventIDs The list of eventIDs to look for, or nil for any.
+ * @param qosTiers The list of qosTiers to look for, or nil for any.
+ * @param mappingIDs The list of mappingIDs to look for, or nil for any.
+ * @param onComplete The completion to call once the paths have been discovered.
+ */
+- (void)pathsForTarget:(GDTCORTarget)target
+              eventIDs:(nullable NSSet<NSString *> *)eventIDs
+              qosTiers:(nullable NSSet<NSNumber *> *)qosTiers
+            mappingIDs:(nullable NSSet<NSString *> *)mappingIDs
+            onComplete:(void (^)(NSSet<NSString *> *paths))onComplete;
+
+/** Fetches the current batchID counter value from library storage, increments it, and sets the new
+ * value. Returns nil if a batchID was not able to be created for some reason.
+ *
+ * @param onComplete A block to execute when creating the next batchID is complete.
+ */
+- (void)nextBatchID:(void (^)(NSNumber *_Nullable batchID))onComplete;
+
+/** Constructs a dictionary of event filename components.
+ *
+ * @param fileName The event filename to split.
+ * @return The dictionary of event component keys to their values.
+ */
+- (nullable NSDictionary<NSString *, id> *)eventComponentsFromFilename:(NSString *)fileName;
+
+/** Constructs a dictionary of batch filename components.
+ *
+ * @param fileName The batch folder name to split.
+ * @return The dictionary of batch component keys to their values.
+ */
+- (nullable NSDictionary<NSString *, id> *)batchComponentsFromFilename:(NSString *)fileName;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORReachability_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORReachability_Private.h
new file mode 100644
index 0000000..06b1f67
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORReachability_Private.h	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORReachability.h"
+
+@interface GDTCORReachability ()
+
+/** Allows manually setting the flags for testing purposes. */
+@property(nonatomic, readwrite) GDTCORNetworkReachabilityFlags flags;
+
+/** Creates/returns the singleton instance of this class.
+ *
+ * @return The singleton instance of this class.
+ */
++ (instancetype)sharedInstance;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h
new file mode 100644
index 0000000..2679611
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h	
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h"
+
+@interface GDTCORRegistrar ()
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The concurrent queue on which all registration occurs. */
+@property(nonatomic, readonly) dispatch_queue_t registrarQueue;
+
+/** A map of targets to backend implementations. */
+@property(atomic, readonly) NSMutableDictionary<NSNumber *, id<GDTCORUploader>> *targetToUploader;
+
+/** A map of targets to storage instances. */
+@property(atomic, readonly)
+    NSMutableDictionary<NSNumber *, id<GDTCORStorageProtocol>> *targetToStorage;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h
new file mode 100644
index 0000000..ccca628
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h	
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+
+@class GDTCOREvent;
+
+@protocol GDTCOREventTransformer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Manages the transforming of events. It's desirable for this to be its own class
+ * because running all events through a single instance ensures that transformers are thread-safe.
+ * Having a per-transport queue to run on isn't sufficient because transformer objects could
+ * maintain state (or at least, there's nothing to stop them from doing that) and the same instances
+ * may be used across multiple instances.
+ */
+@interface GDTCORTransformer : NSObject <GDTCORLifecycleProtocol>
+
+/** Instantiates or returns the event transformer singleton.
+ *
+ * @return The singleton instance of the event transformer.
+ */
++ (instancetype)sharedInstance;
+
+/** Writes the result of applying the given transformers' `transformGDTEvent:` method on the given
+ * event.
+ *
+ * @note If the app is suspended, a background task will be created to complete work in-progress,
+ * but this method will not send any further events until the app is resumed.
+ *
+ * @param event The event to apply transformers on.
+ * @param transformers The list of transformers to apply.
+ * @param completion A block to run when an event was written to disk or dropped.
+ */
+- (void)transformEvent:(GDTCOREvent *)event
+      withTransformers:(nullable NSArray<id<GDTCOREventTransformer>> *)transformers
+            onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer_Private.h
new file mode 100644
index 0000000..bb86407
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer_Private.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransformer.h"
+
+@protocol GDTCORApplicationProtocol;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GDTCORTransformer ()
+
+/** The queue on which all work will occur. */
+@property(nonatomic) dispatch_queue_t eventWritingQueue;
+
+/** The application instance that is used to begin/end background tasks.  */
+@property(nonatomic, readonly) id<GDTCORApplicationProtocol> application;
+
+/** The internal initializer. Should be used in tests only to create an instance with a
+ * particular(fake) application instance. */
+- (instancetype)initWithApplication:(id<GDTCORApplicationProtocol>)application;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransport_Private.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransport_Private.h
new file mode 100644
index 0000000..41a1224
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORTransport_Private.h	
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTransport.h"
+
+@class GDTCORTransformer;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GDTCORTransport ()
+
+/** The mapping identifier that the target backend will use to map the transport bytes to proto. */
+@property(nonatomic) NSString *mappingID;
+
+/** The transformers that will operate on events sent by this transport. */
+@property(nonatomic) NSArray<id<GDTCOREventTransformer>> *transformers;
+
+/** The target backend of this transport. */
+@property(nonatomic) NSInteger target;
+
+/** The transformer instance to used to transform events. Allows injecting a fake during testing. */
+@property(nonatomic) GDTCORTransformer *transformerInstance;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h
new file mode 100644
index 0000000..8d1fd11
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadBatch.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class GDTCOREvent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A data object representing a batch of events scheduled for upload.
+@interface GDTCORUploadBatch : NSObject
+
+/// An ID used to identify the batch in the storage.
+@property(nonatomic, readonly) NSNumber *batchID;
+
+/// The collection of the events in the batch.
+@property(nonatomic, readonly) NSSet<GDTCOREvent *> *events;
+
+/// The default initializer. See also docs for the corresponding properties.
+- (instancetype)initWithBatchID:(NSNumber *)batchID events:(NSSet<GDTCOREvent *> *)events;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h
new file mode 100644
index 0000000..bdac3f3
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Private/GDTCORUploadCoordinator.h	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORLifecycle.h"
+#import "GoogleDataTransport/GDTCORLibrary/Internal/GDTCORRegistrar.h"
+
+@class GDTCORClock;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This class connects storage and uploader implementations, providing events to an uploader
+ * and informing the storage what events were successfully uploaded or not.
+ */
+@interface GDTCORUploadCoordinator : NSObject <GDTCORLifecycleProtocol>
+
+/** The queue on which all upload coordination will occur. Also used by a dispatch timer. */
+/** Creates and/or returrns the singleton.
+ *
+ * @return The singleton instance of this class.
+ */
++ (instancetype)sharedInstance;
+
+/** The queue on which all upload coordination will occur. */
+@property(nonatomic, readonly) dispatch_queue_t coordinationQueue;
+
+/** A timer that will causes regular checks for events to upload. */
+@property(nonatomic, readonly, nullable) dispatch_source_t timer;
+
+/** The interval the timer will fire. */
+@property(nonatomic, readonly) uint64_t timerInterval;
+
+/** Some leeway given to libdispatch for the timer interval event. */
+@property(nonatomic, readonly) uint64_t timerLeeway;
+
+/** The registrar object the coordinator will use. Generally used for testing. */
+@property(nonatomic) GDTCORRegistrar *registrar;
+
+/** Forces the backend specified by the target to upload the provided set of events. This should
+ * only ever happen when the QoS tier of an event requires it.
+ *
+ * @param target The target that should force an upload.
+ */
+- (void)forceUploadForTarget:(GDTCORTarget)target;
+
+/** Starts the upload timer. */
+- (void)startTimer;
+
+/** Stops the upload timer from running. */
+- (void)stopTimer;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h
new file mode 100644
index 0000000..8c75b50
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORClock.h	
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This class manages the device clock and produces snapshots of the current time. */
+@interface GDTCORClock : NSObject <NSSecureCoding>
+
+/** The wallclock time, UTC, in milliseconds. */
+@property(nonatomic, readonly) int64_t timeMillis;
+
+/** The offset from UTC in seconds. */
+@property(nonatomic, readonly) int64_t timezoneOffsetSeconds;
+
+/** The kernel boot time when this clock was created in nanoseconds. */
+@property(nonatomic, readonly) int64_t kernelBootTimeNanoseconds;
+
+/** The device uptime when this clock was created in nanoseconds. */
+@property(nonatomic, readonly) int64_t uptimeNanoseconds;
+
+@property(nonatomic, readonly) int64_t kernelBootTime DEPRECATED_MSG_ATTRIBUTE(
+    "Please use `kernelBootTimeNanoseconds` instead");
+
+@property(nonatomic, readonly)
+    int64_t uptime DEPRECATED_MSG_ATTRIBUTE("Please use `uptimeNanoseconds` instead");
+
+/** Creates a GDTCORClock object using the current time and offsets.
+ *
+ * @return A new GDTCORClock object representing the current time state.
+ */
++ (instancetype)snapshot;
+
+/** Creates a GDTCORClock object representing a time in the future, relative to now.
+ *
+ * @param millisInTheFuture The millis in the future from now this clock should represent.
+ * @return An instance representing a future time.
+ */
++ (instancetype)clockSnapshotInTheFuture:(uint64_t)millisInTheFuture;
+
+/** Compares one clock with another, returns YES if the caller is after the parameter.
+ *
+ * @return YES if the calling clock's time is after the given clock's time.
+ */
+- (BOOL)isAfter:(GDTCORClock *)otherClock;
+
+/** Returns value of `uptime` property in milliseconds. */
+- (int64_t)uptimeMilliseconds;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h
new file mode 100644
index 0000000..1fdf732
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORConsoleLogger.h	
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/** The current logging level. This value and higher will be printed. Declared as volatile to make
+ * getting and setting atomic.
+ */
+FOUNDATION_EXPORT volatile NSInteger GDTCORConsoleLoggerLoggingLevel;
+
+/** A  list of logging levels that GDT supports. */
+typedef NS_ENUM(NSInteger, GDTCORLoggingLevel) {
+
+  /** Causes all logs to be printed. */
+  GDTCORLoggingLevelDebug = 1,
+
+  /** Causes all non-debug logs to be printed. */
+  GDTCORLoggingLevelVerbose = 2,
+
+  /** Causes warnings and errors to be printed. */
+  GDTCORLoggingLevelWarnings = 3,
+
+  /** Causes errors to be printed. This is the default value. */
+  GDTCORLoggingLevelErrors = 4
+};
+
+/** A list of message codes to print in the logger that help to correspond printed messages with
+ * code locations.
+ *
+ * Prefixes:
+ * - MCD => MessageCodeDebug
+ * - MCW => MessageCodeWarning
+ * - MCE => MessageCodeError
+ */
+typedef NS_ENUM(NSInteger, GDTCORMessageCode) {
+
+  /** For debug logs. */
+  GDTCORMCDDebugLog = 0,
+
+  /** For warning messages concerning transportBytes: not being implemented by a data object. */
+  GDTCORMCWDataObjectMissingBytesImpl = 1,
+
+  /** For warning messages concerning a failed event upload. */
+  GDTCORMCWUploadFailed = 2,
+
+  /** For warning messages concerning a forced event upload. */
+  GDTCORMCWForcedUpload = 3,
+
+  /** For warning messages concerning a failed reachability call. */
+  GDTCORMCWReachabilityFailed = 4,
+
+  /** For warning messages concerning a database warning. */
+  GDTCORMCWDatabaseWarning = 5,
+
+  /** For warning messages concerning the reading of a event file. */
+  GDTCORMCWFileReadError = 6,
+
+  /** For error messages concerning transformGDTEvent: not being implemented by an event
+     transformer. */
+  GDTCORMCETransformerDoesntImplementTransform = 1000,
+
+  /** For error messages concerning the creation of a directory failing. */
+  GDTCORMCEDirectoryCreationError = 1001,
+
+  /** For error messages concerning the writing of a event file. */
+  GDTCORMCEFileWriteError = 1002,
+
+  /** For error messages concerning the lack of a prioritizer for a given backend. */
+  GDTCORMCEPrioritizerError = 1003,
+
+  /** For error messages concerning a package delivery API violation. */
+  GDTCORMCEDeliverTwice = 1004,
+
+  /** For error messages concerning an error in an implementation of -transportBytes. */
+  GDTCORMCETransportBytesError = 1005,
+
+  /** For general purpose error messages in a dependency. */
+  GDTCORMCEGeneralError = 1006,
+
+  /** For fatal errors. Please go to https://github.com/firebase/firebase-ios-sdk/issues and open
+   * an issue if you encounter an error with this code.
+   */
+  GDTCORMCEFatalAssertion = 1007,
+
+  /** For error messages concerning the reading of a event file. */
+  GDTCORMCEFileReadError = 1008,
+
+  /** For errors related to running sqlite. */
+  GDTCORMCEDatabaseError = 1009,
+};
+
+/** Prints the given code and format string to the console.
+ *
+ * @param code The message code describing the nature of the log.
+ * @param logLevel The log level of this log.
+ * @param format The format string.
+ */
+FOUNDATION_EXPORT
+void GDTCORLog(GDTCORMessageCode code, GDTCORLoggingLevel logLevel, NSString *_Nonnull format, ...)
+    NS_FORMAT_FUNCTION(3, 4);
+
+/** Prints an assert log to the console.
+ *
+ * @param wasFatal Send YES if the assertion should be fatal, NO otherwise.
+ * @param file The file in which the failure occurred.
+ * @param line The line number of the failure.
+ * @param format The format string.
+ */
+FOUNDATION_EXPORT void GDTCORLogAssert(BOOL wasFatal,
+                                       NSString *_Nonnull file,
+                                       NSInteger line,
+                                       NSString *_Nullable format,
+                                       ...) NS_FORMAT_FUNCTION(4, 5);
+
+/** Returns the string that represents some message code.
+ *
+ * @param code The code to convert to a string.
+ * @return The string representing the message code.
+ */
+FOUNDATION_EXPORT NSString *_Nonnull GDTCORMessageCodeEnumToString(GDTCORMessageCode code);
+
+#define GDTCORLogDebug(MESSAGE_FORMAT, ...) \
+  GDTCORLog(GDTCORMCDDebugLog, GDTCORLoggingLevelDebug, MESSAGE_FORMAT, __VA_ARGS__);
+
+// A define to wrap GULLogWarning with slightly more convenient usage.
+#define GDTCORLogWarning(MESSAGE_CODE, MESSAGE_FORMAT, ...) \
+  GDTCORLog(MESSAGE_CODE, GDTCORLoggingLevelWarnings, MESSAGE_FORMAT, __VA_ARGS__);
+
+// A define to wrap GULLogError with slightly more convenient usage and a failing assert.
+#define GDTCORLogError(MESSAGE_CODE, MESSAGE_FORMAT, ...) \
+  GDTCORLog(MESSAGE_CODE, GDTCORLoggingLevelErrors, MESSAGE_FORMAT, __VA_ARGS__);
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h
new file mode 100644
index 0000000..836a454
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREndpoints.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "GDTCORTargets.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/* Class that manages the endpoints used by Google data transport library. */
+@interface GDTCOREndpoints : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/** Returns the upload URL for a target specified. If the target is not available, returns nil.
+ *
+ *  @param target GoogleDataTransport target for which the upload URL is being looked up for.
+ *  @return URL that will be used for uploading the events for the provided target.
+ */
++ (nullable NSURL *)uploadURLForTarget:(GDTCORTarget)target;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h
new file mode 100644
index 0000000..52c2384
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREvent.h	
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GDTCOREventDataObject.h"
+#import "GDTCORTargets.h"
+
+@class GDTCORClock;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The different possible quality of service specifiers. High values indicate high priority. */
+typedef NS_ENUM(NSInteger, GDTCOREventQoS) {
+  /** The QoS tier wasn't set, and won't ever be sent. */
+  GDTCOREventQoSUnknown = 0,
+
+  /** This event is internal telemetry data that should not be sent on its own if possible. */
+  GDTCOREventQoSTelemetry = 1,
+
+  /** This event should be sent, but in a batch only roughly once per day. */
+  GDTCOREventQoSDaily = 2,
+
+  /** This event should be sent when requested by the uploader. */
+  GDTCOREventQosDefault = 3,
+
+  /** This event should be sent immediately along with any other data that can be batched. */
+  GDTCOREventQoSFast = 4,
+
+  /** This event should only be uploaded on wifi. */
+  GDTCOREventQoSWifiOnly = 5,
+};
+
+@interface GDTCOREvent : NSObject <NSSecureCoding>
+
+/** The unique ID of the event. */
+@property(readonly, nonatomic) NSString *eventID;
+
+/** The mapping identifier, to allow backends to map the transport bytes to a proto. */
+@property(nullable, readonly, nonatomic) NSString *mappingID;
+
+/** The identifier for the backend this event will eventually be sent to. */
+@property(readonly, nonatomic) GDTCORTarget target;
+
+/** The data object encapsulated in the transport of your choice, as long as it implements
+ * the GDTCOREventDataObject protocol. */
+@property(nullable, nonatomic) id<GDTCOREventDataObject> dataObject;
+
+/** The serialized bytes from calling [dataObject transportBytes]. */
+@property(nullable, readonly, nonatomic) NSData *serializedDataObjectBytes;
+
+/** The quality of service tier this event belongs to. */
+@property(nonatomic) GDTCOREventQoS qosTier;
+
+/** The clock snapshot at the time of the event. */
+@property(nonatomic) GDTCORClock *clockSnapshot;
+
+/** The expiration date of the event. Default is 604800 seconds (7 days) from creation. */
+@property(nonatomic) NSDate *expirationDate;
+
+/** Bytes that can be used by an uploader later on. */
+@property(nullable, nonatomic) NSData *customBytes;
+
+/** Initializes an instance using the given mappingID.
+ *
+ * @param mappingID The mapping identifier.
+ * @param target The event's target identifier.
+ * @return An instance of this class.
+ */
+- (nullable instancetype)initWithMappingID:(NSString *)mappingID target:(GDTCORTarget)target;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventDataObject.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventDataObject.h
new file mode 100644
index 0000000..34ef624
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventDataObject.h	
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** This protocol defines the common interface that event protos should implement regardless of the
+ * underlying transport technology (protobuf, nanopb, etc).
+ */
+@protocol GDTCOREventDataObject <NSObject>
+
+@required
+
+/** Returns the serialized proto bytes of the implementing event proto.
+ *
+ * @return the serialized proto bytes of the implementing event proto.
+ */
+- (NSData *)transportBytes;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventTransformer.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventTransformer.h
new file mode 100644
index 0000000..80dee7d
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCOREventTransformer.h	
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class GDTCOREvent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Defines the API that event transformers must adopt. */
+@protocol GDTCOREventTransformer <NSObject>
+
+@required
+
+/** Transforms an event by applying some logic to it. Events returned can be nil, for example, in
+ *  instances where the event should be sampled.
+ *
+ * @param event The event to transform.
+ * @return A transformed event, or nil if the transformation dropped the event.
+ */
+- (nullable GDTCOREvent *)transformGDTEvent:(GDTCOREvent *)event;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h
new file mode 100644
index 0000000..0b83ab9
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTargets.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/** The list of targets supported by the shared transport infrastructure. If adding a new target,
+ * please use the previous value +1.
+ */
+typedef NS_ENUM(NSInteger, GDTCORTarget) {
+
+  /** A target only used in testing. */
+  kGDTCORTargetTest = 999,
+
+  /** The CCT target. */
+  kGDTCORTargetCCT = 1000,
+
+  /** The FLL target. */
+  kGDTCORTargetFLL = 1001,
+
+  /** The CSH target. The CSH target is a special-purpose backend. Please do not use it without
+   * permission.
+   */
+  kGDTCORTargetCSH = 1002,
+
+  /** The INT target. */
+  kGDTCORTargetINT = 1003,
+};
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTransport.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTransport.h
new file mode 100644
index 0000000..e58248d
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GDTCORTransport.h	
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GDTCOREventTransformer.h"
+#import "GDTCORTargets.h"
+
+@class GDTCOREvent;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GDTCORTransport : NSObject
+
+// Please use the designated initializer.
+- (instancetype)init NS_UNAVAILABLE;
+
+/** Initializes a new transport that will send events to the given target backend.
+ *
+ * @param mappingID The mapping identifier used by the backend to map the data object transport
+ * bytes to a proto.
+ * @param transformers A list of transformers to be applied to events that are sent.
+ * @param target The target backend of this transport.
+ * @return A transport that will send events.
+ */
+- (nullable instancetype)initWithMappingID:(NSString *)mappingID
+                              transformers:
+                                  (nullable NSArray<id<GDTCOREventTransformer>> *)transformers
+                                    target:(GDTCORTarget)target NS_DESIGNATED_INITIALIZER;
+
+/** Copies and sends an internal telemetry event. Events sent using this API are lower in priority,
+ * and sometimes won't be sent on their own.
+ *
+ * @note This will convert the event's data object to data and release the original event.
+ *
+ * @param event The event to send.
+ * @param completion A block that will be called when the event has been written or dropped.
+ */
+- (void)sendTelemetryEvent:(GDTCOREvent *)event
+                onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion;
+
+/** Copies and sends an internal telemetry event. Events sent using this API are lower in priority,
+ * and sometimes won't be sent on their own.
+ *
+ * @note This will convert the event's data object to data and release the original event.
+ *
+ * @param event The event to send.
+ */
+- (void)sendTelemetryEvent:(GDTCOREvent *)event;
+
+/** Copies and sends an SDK service data event. Events send using this API are higher in priority,
+ * and will cause a network request at some point in the relative near future.
+ *
+ * @note This will convert the event's data object to data and release the original event.
+ *
+ * @param event The event to send.
+ * @param completion A block that will be called when the event has been written or dropped.
+ */
+- (void)sendDataEvent:(GDTCOREvent *)event
+           onComplete:(void (^_Nullable)(BOOL wasWritten, NSError *_Nullable error))completion;
+
+/** Copies and sends an SDK service data event. Events send using this API are higher in priority,
+ * and will cause a network request at some point in the relative near future.
+ *
+ * @note This will convert the event's data object to data and release the original event.
+ *
+ * @param event The event to send.
+ */
+- (void)sendDataEvent:(GDTCOREvent *)event;
+
+/** Creates an event for use by this transport.
+ *
+ * @return An event that is suited for use by this transport.
+ */
+- (GDTCOREvent *)eventForTransport;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GoogleDataTransport.h b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GoogleDataTransport.h
new file mode 100644
index 0000000..0bd39dc
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/GoogleDataTransport/GDTCORLibrary/Public/GoogleDataTransport/GoogleDataTransport.h	
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GDTCORClock.h"
+#import "GDTCORConsoleLogger.h"
+#import "GDTCOREndpoints.h"
+#import "GDTCOREvent.h"
+#import "GDTCOREventDataObject.h"
+#import "GDTCOREventTransformer.h"
+#import "GDTCORTargets.h"
+#import "GDTCORTransport.h"
diff --git a/ChattingApp 000/Pods/GoogleDataTransport/LICENSE b/ChattingApp 000/Pods/GoogleDataTransport/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/LICENSE	
@@ -0,0 +1,202 @@
+
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diff --git a/ChattingApp 000/Pods/GoogleDataTransport/README.md b/ChattingApp 000/Pods/GoogleDataTransport/README.md
new file mode 100644
index 0000000..2633a79
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleDataTransport/README.md	
@@ -0,0 +1,231 @@
+[![Version](https://img.shields.io/cocoapods/v/GoogleDataTransport.svg?style=flat)](https://cocoapods.org/pods/GoogleDataTransport)
+[![License](https://img.shields.io/cocoapods/l/GoogleDataTransport.svg?style=flat)](https://cocoapods.org/pods/GoogleDataTransport)
+[![Platform](https://img.shields.io/cocoapods/p/GoogleDataTransport.svg?style=flat)](https://cocoapods.org/pods/GoogleDataTransport)
+
+[![Actions Status][gh-datatransport-badge]][gh-actions]
+
+# GoogleDataTransport
+
+This library is for internal Google use only. It allows the logging of data and
+telemetry from Google SDKs.
+
+## Integration Testing
+These instructions apply to minor and patch version updates. Major versions need
+a customized adaptation.
+
+After the CI is green:
+* Determine the next version for release by checking the
+  [tagged releases](https://github.com/google/GoogleDataTransport/tags).
+  Ensure that the next release version keeps the Swift PM and CocoaPods versions in sync.
+* Verify that the releasing version is the latest entry in the [CHANGELOG.md](CHANGELOG.md),
+  updating it if necessary.
+* Update the version in the podspec to match the latest entry in the [CHANGELOG.md](CHANGELOG.md)
+* Checkout the `main` branch and ensure it is up to date.
+  ```console
+  git checkout main
+  git pull
+  ```
+* Add the CocoaPods tag (`{version}` will be the latest version in the [podspec](GoogleDataTransport.podspec#L3))
+  ```console
+  git tag CocoaPods-{version}
+  git push origin CocoaPods-{version}
+  ```
+* Push the podspec to the designated repo
+  * If this version of GDT is intended to launch **before or with** the next Firebase release:
+    <details>
+    <summary>Push to <b>SpecsStaging</b></summary>
+
+    ```console
+    pod repo push --skip-tests staging GoogleDataTransport.podspec
+    ```
+
+    If the command fails with `Unable to find the 'staging' repo.`, add the staging repo with:
+    ```console
+    pod repo add staging git@github.com:firebase/SpecsStaging.git
+    ```
+    </details>
+  * Otherwise:
+    <details>
+    <summary>Push to <b>SpecsDev</b></summary>
+
+    ```console
+    pod repo push --skip-tests dev GoogleDataTransport.podspec
+    ```
+
+    If the command fails with `Unable to find the 'dev' repo.`, add the dev repo with:
+    ```console
+    pod repo add dev git@github.com:firebase/SpecsDev.git
+    ```
+    </details>
+* Run Firebase CI by waiting until next nightly or adding a PR that touches `Gemfile`.
+* On google3, create a workspace and new CL. Then copybara and run a global TAP.
+  <pre>
+  /google/data/ro/teams/copybara/copybara third_party/firebase/ios/Releases/GoogleDataTransport/copy.bara.sky \
+  --piper-description-behavior=OVERWRITE \
+  --destination-cl=<b>YOUR_CL</b> gdt
+  </pre>
+
+## Publishing
+The release process is as follows:
+1. [Tag and release for Swift PM](#swift-package-manager)
+2. [Publish to CocoaPods](#cocoapods)
+3. [Create GitHub Release](#create-github-release)
+4. [Perform post release cleanup](#post-release-cleanup)
+
+### Swift Package Manager
+  By creating and [pushing a tag](https://github.com/google/GoogleDataTransport/tags)
+  for Swift PM, the newly tagged version will be immediately released for public use.
+  Given this, please verify the intended time of release for Swift PM.
+  * Add a version tag for Swift PM
+  ```console
+  git tag {version}
+  git push origin {version}
+  ```
+  *Note: Ensure that any inflight PRs that depend on the new `GoogleDataTransport` version are updated to point to the
+  newly tagged version rather than a checksum.*
+
+### CocoaPods
+* Publish the newly versioned pod to CocoaPods
+
+  It's recommended to point to the `GoogleDataTransport.podspec` in `staging` to make sure the correct spec is being published.
+  ```console
+  pod trunk push ~/.cocoapods/repos/staging/GoogleDataTransport/{version}/GoogleDataTransport.podspec --skip-tests
+  ```
+
+  The pod push was successful if the above command logs: `🚀  GoogleDataTransport ({version}) successfully published`.
+  In addition, a new commit that publishes the new version (co-authored by [CocoaPodsAtGoogle](https://github.com/CocoaPodsAtGoogle))
+  should appear in the [CocoaPods specs repo](https://github.com/CocoaPods/Specs). Last, the latest version should be displayed
+  on [GoogleDataTransport's CocoaPods page](https://cocoapods.org/pods/GoogleDataTransport).
+
+### [Create GitHub Release](https://github.com/google/GoogleDataTransport/releases/new/)
+  Update the [release template](https://github.com/google/GoogleDataTransport/releases/new/)'s **Tag version** and **Release title**
+  fields with the latest version. In addition, reference the [Release Notes](./CHANGELOG.md) in the release's description.
+
+  See [this release](https://github.com/google/GoogleDataTransport/releases/edit/9.0.1) for an example.
+
+  *Don't forget to perform the [post release cleanup](#post-release-cleanup)!*
+
+### Post Release Cleanup
+  <details>
+  <summary>Clean up <b>SpecsStaging</b></summary>
+
+  ```console
+  pwd=$(pwd)
+  mkdir -p /tmp/release-cleanup && cd $_
+  git clone git@github.com:firebase/SpecsStaging.git
+  cd SpecsStaging/
+  git rm -rf GoogleDataTransport/
+  git commit -m "Post publish cleanup"
+  git push origin master
+  rm -rf /tmp/release-cleanup
+  cd $pwd
+  ```
+  </details>
+
+## Set logging level
+
+### Swift
+
+- Import `GoogleDataTransport` module:
+    ```swift
+    import GoogleDataTransport
+    ```
+- Set logging level global variable to the desired value before calling `FirebaseApp.configure()`:
+    ```swift
+    GDTCORConsoleLoggerLoggingLevel = GDTCORLoggingLevel.debug.rawValue
+    ```
+### Objective-C
+
+- Import `GoogleDataTransport`:
+    ```objective-c
+    #import <GoogleDataTransport/GoogleDataTransport.h>
+    ```
+- Set logging level global variable to the desired value before calling `-[FIRApp configure]`:
+    ```objective-c
+    GDTCORConsoleLoggerLoggingLevel = GDTCORLoggingLevelDebug;
+    ```
+
+## Prereqs
+
+- `gem install --user cocoapods cocoapods-generate`
+- `brew install protobuf nanopb-generator`
+- `easy_install --user protobuf`
+
+## To develop
+
+- Run `./GoogleDataTransport/generate_project.sh` after installing the prereqs
+
+## When adding new logging endpoint
+
+- Use commands similar to:
+    - `python -c "line='https://www.firebase.com'; print line[0::2]" `
+    - `python -c "line='https://www.firebase.com'; print line[1::2]" `
+
+## When adding internal code that shouldn't be easily usable on github
+
+- Consider using go/copybara-library/scrubbing#cc_scrub
+
+## Development
+
+Ensure that you have at least the following software:
+
+  * Xcode 12.0 (or later)
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+`pod gen GoogleDataTransport.podspec --local-sources=./ --auto-open --platforms=ios`
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+### Development for Catalyst
+* `pod gen GoogleDataTransport.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@13
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md) for more information on contributing to the Firebase
+iOS SDK.
+
+## License
+
+The contents of this repository is licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-datatransport-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/datatransport/badge.svg
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULAppDelegateSwizzler.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULAppDelegateSwizzler.m
new file mode 100644
index 0000000..88ea069
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULAppDelegateSwizzler.m	
@@ -0,0 +1,1070 @@
+// Copyright 2018 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <TargetConditionals.h>
+
+#import "GoogleUtilities/AppDelegateSwizzler/Internal/GULAppDelegateSwizzler_Private.h"
+#import "GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h"
+#import "GoogleUtilities/Common/GULLoggerCodes.h"
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h"
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+
+#import <dispatch/group.h>
+#import <objc/runtime.h>
+
+// Implementations need to be typed before calling the implementation directly to cast the
+// arguments and the return types correctly. Otherwise, it will crash the app.
+typedef BOOL (*GULRealOpenURLSourceApplicationAnnotationIMP)(
+    id, SEL, GULApplication *, NSURL *, NSString *, id);
+
+typedef BOOL (*GULRealOpenURLOptionsIMP)(
+    id, SEL, GULApplication *, NSURL *, NSDictionary<NSString *, id> *);
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wstrict-prototypes"
+typedef void (*GULRealHandleEventsForBackgroundURLSessionIMP)(
+    id, SEL, GULApplication *, NSString *, void (^)());
+#pragma clang diagnostic pop
+
+typedef BOOL (*GULRealContinueUserActivityIMP)(
+    id, SEL, GULApplication *, NSUserActivity *, void (^)(NSArray *restorableObjects));
+
+typedef void (*GULRealDidRegisterForRemoteNotificationsIMP)(id, SEL, GULApplication *, NSData *);
+
+typedef void (*GULRealDidFailToRegisterForRemoteNotificationsIMP)(id,
+                                                                  SEL,
+                                                                  GULApplication *,
+                                                                  NSError *);
+
+typedef void (*GULRealDidReceiveRemoteNotificationIMP)(id, SEL, GULApplication *, NSDictionary *);
+
+#if !TARGET_OS_WATCH && !TARGET_OS_OSX
+typedef void (*GULRealDidReceiveRemoteNotificationWithCompletionIMP)(
+    id, SEL, GULApplication *, NSDictionary *, void (^)(UIBackgroundFetchResult));
+#endif  // !TARGET_OS_WATCH && !TARGET_OS_OSX
+
+typedef void (^GULAppDelegateInterceptorCallback)(id<GULApplicationDelegate>);
+
+// The strings below are the keys for associated objects.
+static char const *const kGULRealIMPBySelectorKey = "GUL_realIMPBySelector";
+static char const *const kGULRealClassKey = "GUL_realClass";
+
+static NSString *const kGULAppDelegateKeyPath = @"delegate";
+
+static GULLoggerService kGULLoggerSwizzler = @"[GoogleUtilities/AppDelegateSwizzler]";
+
+// Since Firebase SDKs also use this for app delegate proxying, in order to not be a breaking change
+// we disable App Delegate proxying when either of these two flags are set to NO.
+
+/** Plist key that allows Firebase developers to disable App and Scene Delegate Proxying. */
+static NSString *const kGULFirebaseAppDelegateProxyEnabledPlistKey =
+    @"FirebaseAppDelegateProxyEnabled";
+
+/** Plist key that allows developers not using Firebase to disable App and Scene Delegate Proxying.
+ */
+static NSString *const kGULGoogleUtilitiesAppDelegateProxyEnabledPlistKey =
+    @"GoogleUtilitiesAppDelegateProxyEnabled";
+
+/** The prefix of the App Delegate. */
+static NSString *const kGULAppDelegatePrefix = @"GUL_";
+
+/** The original instance of App Delegate. */
+static id<GULApplicationDelegate> gOriginalAppDelegate;
+
+/** The original App Delegate class */
+static Class gOriginalAppDelegateClass;
+
+/** The subclass of the original App Delegate. */
+static Class gAppDelegateSubclass;
+
+/** Remote notification methods selectors
+ *
+ *  We have to opt out of referencing APNS related App Delegate methods directly to prevent
+ *  an Apple review warning email about missing Push Notification Entitlement
+ *  (like here: https://github.com/firebase/firebase-ios-sdk/issues/2807). From our experience, the
+ *  warning is triggered when any of the symbols is present in the application sent to review, even
+ *  if the code is never executed. Because GULAppDelegateSwizzler may be used by applications that
+ *  are not using APNS we have to refer to the methods indirectly using selector constructed from
+ *  string.
+ *
+ *  NOTE: None of the methods is proxied unless it is explicitly requested by calling the method
+ *  +[GULAppDelegateSwizzler proxyOriginalDelegateIncludingAPNSMethods]
+ */
+static NSString *const kGULDidRegisterForRemoteNotificationsSEL =
+    @"application:didRegisterForRemoteNotificationsWithDeviceToken:";
+static NSString *const kGULDidFailToRegisterForRemoteNotificationsSEL =
+    @"application:didFailToRegisterForRemoteNotificationsWithError:";
+static NSString *const kGULDidReceiveRemoteNotificationSEL =
+    @"application:didReceiveRemoteNotification:";
+static NSString *const kGULDidReceiveRemoteNotificationWithCompletionSEL =
+    @"application:didReceiveRemoteNotification:fetchCompletionHandler:";
+
+/**
+ * This class is necessary to store the delegates in an NSArray without retaining them.
+ * [NSValue valueWithNonRetainedObject] also provides this functionality, but does not provide a
+ * zeroing pointer. This will cause EXC_BAD_ACCESS when trying to access the object after it is
+ * dealloced. Instead, this container stores a weak, zeroing reference to the object, which
+ * automatically is set to nil by the runtime when the object is dealloced.
+ */
+@interface GULZeroingWeakContainer : NSObject
+
+/** Stores a weak object. */
+@property(nonatomic, weak) id object;
+
+@end
+
+@implementation GULZeroingWeakContainer
+@end
+
+@interface GULAppDelegateObserver : NSObject
+@end
+
+@implementation GULAppDelegateObserver {
+  BOOL _isObserving;
+}
+
++ (GULAppDelegateObserver *)sharedInstance {
+  static GULAppDelegateObserver *instance;
+  static dispatch_once_t once;
+  dispatch_once(&once, ^{
+    instance = [[GULAppDelegateObserver alloc] init];
+  });
+  return instance;
+}
+
+- (void)observeUIApplication {
+  if (_isObserving) {
+    return;
+  }
+  [[GULAppDelegateSwizzler sharedApplication]
+      addObserver:self
+       forKeyPath:kGULAppDelegateKeyPath
+          options:NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld
+          context:nil];
+  _isObserving = YES;
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath
+                      ofObject:(id)object
+                        change:(NSDictionary *)change
+                       context:(void *)context {
+  if ([keyPath isEqual:kGULAppDelegateKeyPath]) {
+    id newValue = change[NSKeyValueChangeNewKey];
+    id oldValue = change[NSKeyValueChangeOldKey];
+    if ([newValue isEqual:oldValue]) {
+      return;
+    }
+    // Free the stored app delegate instance because it has been changed to a different instance to
+    // avoid keeping it alive forever.
+    if ([oldValue isEqual:gOriginalAppDelegate]) {
+      gOriginalAppDelegate = nil;
+      // Remove the observer. Parse it to NSObject to avoid warning.
+      [[GULAppDelegateSwizzler sharedApplication] removeObserver:self
+                                                      forKeyPath:kGULAppDelegateKeyPath];
+      _isObserving = NO;
+    }
+  }
+}
+
+@end
+
+@implementation GULAppDelegateSwizzler
+
+static dispatch_once_t sProxyAppDelegateOnceToken;
+static dispatch_once_t sProxyAppDelegateRemoteNotificationOnceToken;
+
+#pragma mark - Public methods
+
++ (BOOL)isAppDelegateProxyEnabled {
+  NSDictionary *infoDictionary = [NSBundle mainBundle].infoDictionary;
+
+  id isFirebaseProxyEnabledPlistValue = infoDictionary[kGULFirebaseAppDelegateProxyEnabledPlistKey];
+  id isGoogleProxyEnabledPlistValue =
+      infoDictionary[kGULGoogleUtilitiesAppDelegateProxyEnabledPlistKey];
+
+  // Enabled by default.
+  BOOL isFirebaseAppDelegateProxyEnabled = YES;
+  BOOL isGoogleUtilitiesAppDelegateProxyEnabled = YES;
+
+  if ([isFirebaseProxyEnabledPlistValue isKindOfClass:[NSNumber class]]) {
+    isFirebaseAppDelegateProxyEnabled = [isFirebaseProxyEnabledPlistValue boolValue];
+  }
+
+  if ([isGoogleProxyEnabledPlistValue isKindOfClass:[NSNumber class]]) {
+    isGoogleUtilitiesAppDelegateProxyEnabled = [isGoogleProxyEnabledPlistValue boolValue];
+  }
+
+  // Only deactivate the proxy if it is explicitly disabled by app developers using either one of
+  // the plist flags.
+  return isFirebaseAppDelegateProxyEnabled && isGoogleUtilitiesAppDelegateProxyEnabled;
+}
+
++ (GULAppDelegateInterceptorID)registerAppDelegateInterceptor:
+    (id<GULApplicationDelegate>)interceptor {
+  NSAssert(interceptor, @"AppDelegateProxy cannot add nil interceptor");
+  NSAssert([interceptor conformsToProtocol:@protocol(GULApplicationDelegate)],
+           @"AppDelegateProxy interceptor does not conform to UIApplicationDelegate");
+
+  if (!interceptor) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling000],
+                @"AppDelegateProxy cannot add nil interceptor.");
+    return nil;
+  }
+  if (![interceptor conformsToProtocol:@protocol(GULApplicationDelegate)]) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling001],
+                @"AppDelegateProxy interceptor does not conform to UIApplicationDelegate");
+    return nil;
+  }
+
+  // The ID should be the same given the same interceptor object.
+  NSString *interceptorID = [NSString stringWithFormat:@"%@%p", kGULAppDelegatePrefix, interceptor];
+  if (!interceptorID.length) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling002],
+                @"AppDelegateProxy cannot create Interceptor ID.");
+    return nil;
+  }
+  GULZeroingWeakContainer *weakObject = [[GULZeroingWeakContainer alloc] init];
+  weakObject.object = interceptor;
+  [GULAppDelegateSwizzler interceptors][interceptorID] = weakObject;
+  return interceptorID;
+}
+
++ (void)unregisterAppDelegateInterceptorWithID:(GULAppDelegateInterceptorID)interceptorID {
+  NSAssert(interceptorID, @"AppDelegateProxy cannot unregister nil interceptor ID.");
+  NSAssert(((NSString *)interceptorID).length != 0,
+           @"AppDelegateProxy cannot unregister empty interceptor ID.");
+
+  if (!interceptorID) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling003],
+                @"AppDelegateProxy cannot unregister empty interceptor ID.");
+    return;
+  }
+
+  GULZeroingWeakContainer *weakContainer = [GULAppDelegateSwizzler interceptors][interceptorID];
+  if (!weakContainer.object) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling004],
+                @"AppDelegateProxy cannot unregister interceptor that was not registered. "
+                 "Interceptor ID %@",
+                interceptorID);
+    return;
+  }
+
+  [[GULAppDelegateSwizzler interceptors] removeObjectForKey:interceptorID];
+}
+
++ (void)proxyOriginalDelegate {
+  if ([GULAppEnvironmentUtil isAppExtension]) {
+    return;
+  }
+
+  dispatch_once(&sProxyAppDelegateOnceToken, ^{
+    id<GULApplicationDelegate> originalDelegate =
+        [GULAppDelegateSwizzler sharedApplication].delegate;
+    [GULAppDelegateSwizzler proxyAppDelegate:originalDelegate];
+  });
+}
+
++ (void)proxyOriginalDelegateIncludingAPNSMethods {
+  if ([GULAppEnvironmentUtil isAppExtension]) {
+    return;
+  }
+
+  [self proxyOriginalDelegate];
+
+  dispatch_once(&sProxyAppDelegateRemoteNotificationOnceToken, ^{
+    id<GULApplicationDelegate> appDelegate = [GULAppDelegateSwizzler sharedApplication].delegate;
+
+    NSMutableDictionary *realImplementationsBySelector =
+        [objc_getAssociatedObject(appDelegate, &kGULRealIMPBySelectorKey) mutableCopy];
+
+    [self proxyRemoteNotificationsMethodsWithAppDelegateSubClass:gAppDelegateSubclass
+                                                       realClass:gOriginalAppDelegateClass
+                                                     appDelegate:appDelegate
+                                   realImplementationsBySelector:realImplementationsBySelector];
+
+    objc_setAssociatedObject(appDelegate, &kGULRealIMPBySelectorKey,
+                             [realImplementationsBySelector copy], OBJC_ASSOCIATION_RETAIN);
+    [self reassignAppDelegate];
+  });
+}
+
+#pragma mark - Create proxy
+
++ (GULApplication *)sharedApplication {
+  if ([GULAppEnvironmentUtil isAppExtension]) {
+    return nil;
+  }
+  id sharedApplication = nil;
+  Class uiApplicationClass = NSClassFromString(kGULApplicationClassName);
+  if (uiApplicationClass &&
+      [uiApplicationClass respondsToSelector:(NSSelectorFromString(@"sharedApplication"))]) {
+    sharedApplication = [uiApplicationClass sharedApplication];
+  }
+  return sharedApplication;
+}
+
+#pragma mark - Override default methods
+
+/** Creates a new subclass of the class of the given object and sets the isa value of the given
+ *  object to the new subclass. Additionally this copies methods to that new subclass that allow us
+ *  to intercept UIApplicationDelegate methods. This is better known as isa swizzling.
+ *
+ *  @param appDelegate The object to which you want to isa swizzle. This has to conform to the
+ *      UIApplicationDelegate subclass.
+ *  @return Returns the new subclass.
+ */
++ (nullable Class)createSubclassWithObject:(id<GULApplicationDelegate>)appDelegate {
+  Class realClass = [appDelegate class];
+
+  // Create GUL_<RealAppDelegate>_<UUID>
+  NSString *classNameWithPrefix =
+      [kGULAppDelegatePrefix stringByAppendingString:NSStringFromClass(realClass)];
+  NSString *newClassName =
+      [NSString stringWithFormat:@"%@-%@", classNameWithPrefix, [NSUUID UUID].UUIDString];
+
+  if (NSClassFromString(newClassName)) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling005],
+                @"Cannot create a proxy for App Delegate. Subclass already exists. Original Class: "
+                @"%@, subclass: %@",
+                NSStringFromClass(realClass), newClassName);
+    return nil;
+  }
+
+  // Register the new class as subclass of the real one. Do not allocate more than the real class
+  // size.
+  Class appDelegateSubClass = objc_allocateClassPair(realClass, newClassName.UTF8String, 0);
+  if (appDelegateSubClass == Nil) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling006],
+                @"Cannot create a proxy for App Delegate. Subclass already exists. Original Class: "
+                @"%@, subclass: Nil",
+                NSStringFromClass(realClass));
+    return nil;
+  }
+
+  NSMutableDictionary<NSString *, NSValue *> *realImplementationsBySelector =
+      [[NSMutableDictionary alloc] init];
+
+  // For application:continueUserActivity:restorationHandler:
+  SEL continueUserActivitySEL = @selector(application:continueUserActivity:restorationHandler:);
+  [self proxyDestinationSelector:continueUserActivitySEL
+      implementationsFromSourceSelector:continueUserActivitySEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+  // Add the following methods from GULAppDelegate class, and store the real implementation so it
+  // can forward to the real one.
+  // For application:openURL:options:
+  SEL applicationOpenURLOptionsSEL = @selector(application:openURL:options:);
+  if ([appDelegate respondsToSelector:applicationOpenURLOptionsSEL]) {
+    // Only add the application:openURL:options: method if the original AppDelegate implements it.
+    // This fixes a bug if an app only implements application:openURL:sourceApplication:annotation:
+    // (if we add the `options` method, iOS sees that one exists and does not call the
+    // `sourceApplication` method, which in this case is the only one the app implements).
+
+    [self proxyDestinationSelector:applicationOpenURLOptionsSEL
+        implementationsFromSourceSelector:applicationOpenURLOptionsSEL
+                                fromClass:[GULAppDelegateSwizzler class]
+                                  toClass:appDelegateSubClass
+                                realClass:realClass
+         storeDestinationImplementationTo:realImplementationsBySelector];
+  }
+
+  // For application:handleEventsForBackgroundURLSession:completionHandler:
+  SEL handleEventsForBackgroundURLSessionSEL = @selector(application:
+                                 handleEventsForBackgroundURLSession:completionHandler:);
+  [self proxyDestinationSelector:handleEventsForBackgroundURLSessionSEL
+      implementationsFromSourceSelector:handleEventsForBackgroundURLSessionSEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#if TARGET_OS_IOS
+  // For application:openURL:sourceApplication:annotation:
+  SEL openURLSourceApplicationAnnotationSEL = @selector(application:
+                                                            openURL:sourceApplication:annotation:);
+
+  [self proxyDestinationSelector:openURLSourceApplicationAnnotationSEL
+      implementationsFromSourceSelector:openURLSourceApplicationAnnotationSEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+#endif  // TARGET_OS_IOS
+
+  // Override the description too so the custom class name will not show up.
+  [GULAppDelegateSwizzler addInstanceMethodWithDestinationSelector:@selector(description)
+                              withImplementationFromSourceSelector:@selector(fakeDescription)
+                                                         fromClass:[self class]
+                                                           toClass:appDelegateSubClass];
+
+  // Store original implementations to a fake property of the original delegate.
+  objc_setAssociatedObject(appDelegate, &kGULRealIMPBySelectorKey,
+                           [realImplementationsBySelector copy], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+  objc_setAssociatedObject(appDelegate, &kGULRealClassKey, realClass,
+                           OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+
+  // The subclass size has to be exactly the same size with the original class size. The subclass
+  // cannot have more ivars/properties than its superclass since it will cause an offset in memory
+  // that can lead to overwriting the isa of an object in the next frame.
+  if (class_getInstanceSize(realClass) != class_getInstanceSize(appDelegateSubClass)) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling007],
+                @"Cannot create subclass of App Delegate, because the created subclass is not the "
+                @"same size. %@",
+                NSStringFromClass(realClass));
+    NSAssert(NO, @"Classes must be the same size to swizzle isa");
+    return nil;
+  }
+
+  // Make the newly created class to be the subclass of the real App Delegate class.
+  objc_registerClassPair(appDelegateSubClass);
+  if (object_setClass(appDelegate, appDelegateSubClass)) {
+    GULLogDebug(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling008],
+                @"Successfully created App Delegate Proxy automatically. To disable the "
+                @"proxy, set the flag %@ to NO (Boolean) in the Info.plist",
+                [GULAppDelegateSwizzler correctAppDelegateProxyKey]);
+  }
+
+  return appDelegateSubClass;
+}
+
++ (void)proxyRemoteNotificationsMethodsWithAppDelegateSubClass:(Class)appDelegateSubClass
+                                                     realClass:(Class)realClass
+                                                   appDelegate:(id)appDelegate
+                                 realImplementationsBySelector:
+                                     (NSMutableDictionary *)realImplementationsBySelector {
+  if (realClass == nil || appDelegateSubClass == nil || appDelegate == nil ||
+      realImplementationsBySelector == nil) {
+    // The App Delegate has not been swizzled.
+    return;
+  }
+
+  // For application:didRegisterForRemoteNotificationsWithDeviceToken:
+  SEL didRegisterForRemoteNotificationsSEL =
+      NSSelectorFromString(kGULDidRegisterForRemoteNotificationsSEL);
+  SEL didRegisterForRemoteNotificationsDonorSEL = @selector(application:
+                 donor_didRegisterForRemoteNotificationsWithDeviceToken:);
+
+  [self proxyDestinationSelector:didRegisterForRemoteNotificationsSEL
+      implementationsFromSourceSelector:didRegisterForRemoteNotificationsDonorSEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+
+  // For application:didFailToRegisterForRemoteNotificationsWithError:
+  SEL didFailToRegisterForRemoteNotificationsSEL =
+      NSSelectorFromString(kGULDidFailToRegisterForRemoteNotificationsSEL);
+  SEL didFailToRegisterForRemoteNotificationsDonorSEL = @selector(application:
+                       donor_didFailToRegisterForRemoteNotificationsWithError:);
+
+  [self proxyDestinationSelector:didFailToRegisterForRemoteNotificationsSEL
+      implementationsFromSourceSelector:didFailToRegisterForRemoteNotificationsDonorSEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+
+  // For application:didReceiveRemoteNotification:
+  SEL didReceiveRemoteNotificationSEL = NSSelectorFromString(kGULDidReceiveRemoteNotificationSEL);
+  SEL didReceiveRemoteNotificationDonotSEL = @selector(application:
+                                donor_didReceiveRemoteNotification:);
+
+  [self proxyDestinationSelector:didReceiveRemoteNotificationSEL
+      implementationsFromSourceSelector:didReceiveRemoteNotificationDonotSEL
+                              fromClass:[GULAppDelegateSwizzler class]
+                                toClass:appDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+
+  // For application:didReceiveRemoteNotification:fetchCompletionHandler:
+#if !TARGET_OS_WATCH && !TARGET_OS_OSX
+  SEL didReceiveRemoteNotificationWithCompletionSEL =
+      NSSelectorFromString(kGULDidReceiveRemoteNotificationWithCompletionSEL);
+  SEL didReceiveRemoteNotificationWithCompletionDonorSEL =
+      @selector(application:donor_didReceiveRemoteNotification:fetchCompletionHandler:);
+  if ([appDelegate respondsToSelector:didReceiveRemoteNotificationWithCompletionSEL]) {
+    // Only add the application:didReceiveRemoteNotification:fetchCompletionHandler: method if
+    // the original AppDelegate implements it.
+    // This fixes a bug if an app only implements application:didReceiveRemoteNotification:
+    // (if we add the method with completion, iOS sees that one exists and does not call
+    // the method without the completion, which in this case is the only one the app implements).
+
+    [self proxyDestinationSelector:didReceiveRemoteNotificationWithCompletionSEL
+        implementationsFromSourceSelector:didReceiveRemoteNotificationWithCompletionDonorSEL
+                                fromClass:[GULAppDelegateSwizzler class]
+                                  toClass:appDelegateSubClass
+                                realClass:realClass
+         storeDestinationImplementationTo:realImplementationsBySelector];
+  }
+#endif  // !TARGET_OS_WATCH && !TARGET_OS_OSX
+}
+
+/// We have to do this to invalidate the cache that caches the original respondsToSelector of
+/// openURL handlers. Without this, it won't call the default implementations because the system
+/// checks and caches them.
+/// Register KVO only once. Otherwise, the observing method will be called as many times as
+/// being registered.
++ (void)reassignAppDelegate {
+#if !TARGET_OS_WATCH
+  id<GULApplicationDelegate> delegate = [self sharedApplication].delegate;
+  [self sharedApplication].delegate = nil;
+  [self sharedApplication].delegate = delegate;
+  gOriginalAppDelegate = delegate;
+  [[GULAppDelegateObserver sharedInstance] observeUIApplication];
+#endif
+}
+
+#pragma mark - Helper methods
+
++ (GULMutableDictionary *)interceptors {
+  static dispatch_once_t onceToken;
+  static GULMutableDictionary *sInterceptors;
+  dispatch_once(&onceToken, ^{
+    sInterceptors = [[GULMutableDictionary alloc] init];
+  });
+  return sInterceptors;
+}
+
++ (nullable NSValue *)originalImplementationForSelector:(SEL)selector object:(id)object {
+  NSDictionary *realImplementationBySelector =
+      objc_getAssociatedObject(object, &kGULRealIMPBySelectorKey);
+  return realImplementationBySelector[NSStringFromSelector(selector)];
+}
+
++ (void)proxyDestinationSelector:(SEL)destinationSelector
+    implementationsFromSourceSelector:(SEL)sourceSelector
+                            fromClass:(Class)sourceClass
+                              toClass:(Class)destinationClass
+                            realClass:(Class)realClass
+     storeDestinationImplementationTo:
+         (NSMutableDictionary<NSString *, NSValue *> *)destinationImplementationsBySelector {
+  [self addInstanceMethodWithDestinationSelector:destinationSelector
+            withImplementationFromSourceSelector:sourceSelector
+                                       fromClass:sourceClass
+                                         toClass:destinationClass];
+  IMP sourceImplementation =
+      [GULAppDelegateSwizzler implementationOfMethodSelector:destinationSelector
+                                                   fromClass:realClass];
+  NSValue *sourceImplementationPointer = [NSValue valueWithPointer:sourceImplementation];
+
+  NSString *destinationSelectorString = NSStringFromSelector(destinationSelector);
+  destinationImplementationsBySelector[destinationSelectorString] = sourceImplementationPointer;
+}
+
+/** Copies a method identified by the methodSelector from one class to the other. After this method
+ *  is called, performing [toClassInstance methodSelector] will be similar to calling
+ *  [fromClassInstance methodSelector]. This method does nothing if toClass already has a method
+ *  identified by methodSelector.
+ *
+ *  @param methodSelector The SEL that identifies both the method on the fromClass as well as the
+ *      one on the toClass.
+ *  @param fromClass The class from which a method is sourced.
+ *  @param toClass The class to which the method is added. If the class already has a method with
+ *      the same selector, this has no effect.
+ */
++ (void)addInstanceMethodWithSelector:(SEL)methodSelector
+                            fromClass:(Class)fromClass
+                              toClass:(Class)toClass {
+  [self addInstanceMethodWithDestinationSelector:methodSelector
+            withImplementationFromSourceSelector:methodSelector
+                                       fromClass:fromClass
+                                         toClass:toClass];
+}
+
+/** Copies a method identified by the sourceSelector from the fromClass as a method for the
+ *  destinationSelector on the toClass. After this method is called, performing
+ *  [toClassInstance destinationSelector] will be similar to calling
+ *  [fromClassInstance sourceSelector]. This method does nothing if toClass already has a method
+ *  identified by destinationSelector.
+ *
+ *  @param destinationSelector The SEL that identifies the method on the toClass.
+ *  @param sourceSelector The SEL that identifies the method on the fromClass.
+ *  @param fromClass The class from which a method is sourced.
+ *  @param toClass The class to which the method is added. If the class already has a method with
+ *      the same selector, this has no effect.
+ */
++ (void)addInstanceMethodWithDestinationSelector:(SEL)destinationSelector
+            withImplementationFromSourceSelector:(SEL)sourceSelector
+                                       fromClass:(Class)fromClass
+                                         toClass:(Class)toClass {
+  Method method = class_getInstanceMethod(fromClass, sourceSelector);
+  IMP methodIMP = method_getImplementation(method);
+  const char *types = method_getTypeEncoding(method);
+  if (!class_addMethod(toClass, destinationSelector, methodIMP, types)) {
+    GULLogWarning(kGULLoggerSwizzler, NO,
+                  [NSString stringWithFormat:@"I-SWZ%06ld",
+                                             (long)kGULSwizzlerMessageCodeAppDelegateSwizzling009],
+                  @"Cannot copy method to destination selector %@ as it already exists",
+                  NSStringFromSelector(destinationSelector));
+  }
+}
+
+/** Gets the IMP of the instance method on the class identified by the selector.
+ *
+ *  @param selector The selector of which the IMP is to be fetched.
+ *  @param aClass The class from which the IMP is to be fetched.
+ *  @return The IMP of the instance method identified by selector and aClass.
+ */
++ (IMP)implementationOfMethodSelector:(SEL)selector fromClass:(Class)aClass {
+  Method aMethod = class_getInstanceMethod(aClass, selector);
+  return method_getImplementation(aMethod);
+}
+
+/** Enumerates through all the interceptors and if they respond to a given selector, executes a
+ *  GULAppDelegateInterceptorCallback with the interceptor.
+ *
+ *  @param methodSelector The SEL to check if an interceptor responds to.
+ *  @param callback the GULAppDelegateInterceptorCallback.
+ */
++ (void)notifyInterceptorsWithMethodSelector:(SEL)methodSelector
+                                    callback:(GULAppDelegateInterceptorCallback)callback {
+  if (!callback) {
+    return;
+  }
+
+  NSDictionary *interceptors = [GULAppDelegateSwizzler interceptors].dictionary;
+  [interceptors enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+    GULZeroingWeakContainer *interceptorContainer = obj;
+    id interceptor = interceptorContainer.object;
+    if (!interceptor) {
+      GULLogWarning(
+          kGULLoggerSwizzler, NO,
+          [NSString
+              stringWithFormat:@"I-SWZ%06ld", (long)kGULSwizzlerMessageCodeAppDelegateSwizzling010],
+          @"AppDelegateProxy cannot find interceptor with ID %@. Removing the interceptor.", key);
+      [[GULAppDelegateSwizzler interceptors] removeObjectForKey:key];
+      return;
+    }
+    if ([interceptor respondsToSelector:methodSelector]) {
+      callback(interceptor);
+    }
+  }];
+}
+
+// The methods below are donor methods which are added to the dynamic subclass of the App Delegate.
+// They are called within the scope of the real App Delegate so |self| does not refer to the
+// GULAppDelegateSwizzler instance but the real App Delegate instance.
+
+#pragma mark - [Donor Methods] Overridden instance description method
+
+- (NSString *)fakeDescription {
+  Class realClass = objc_getAssociatedObject(self, &kGULRealClassKey);
+  return [NSString stringWithFormat:@"<%@: %p>", realClass, self];
+}
+
+#pragma mark - [Donor Methods] URL overridden handler methods
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+- (BOOL)application:(GULApplication *)application
+            openURL:(NSURL *)url
+            options:(NSDictionary<NSString *, id> *)options {
+  SEL methodSelector = @selector(application:openURL:options:);
+  // Call the real implementation if the real App Delegate has any.
+  NSValue *openURLIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealOpenURLOptionsIMP openURLOptionsIMP = [openURLIMPPointer pointerValue];
+
+  __block BOOL returnedValue = NO;
+
+// This is needed to for the library to be warning free on iOS versions < 9.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    returnedValue |= [interceptor application:application
+                                                                      openURL:url
+                                                                      options:options];
+                                  }];
+#pragma clang diagnostic pop
+  if (openURLOptionsIMP) {
+    returnedValue |= openURLOptionsIMP(self, methodSelector, application, url, options);
+  }
+  return returnedValue;
+}
+
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#if TARGET_OS_IOS
+
+- (BOOL)application:(GULApplication *)application
+              openURL:(NSURL *)url
+    sourceApplication:(NSString *)sourceApplication
+           annotation:(id)annotation {
+  SEL methodSelector = @selector(application:openURL:sourceApplication:annotation:);
+
+  // Call the real implementation if the real App Delegate has any.
+  NSValue *openURLSourceAppAnnotationIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealOpenURLSourceApplicationAnnotationIMP openURLSourceApplicationAnnotationIMP =
+      [openURLSourceAppAnnotationIMPPointer pointerValue];
+
+  __block BOOL returnedValue = NO;
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+                                    returnedValue |= [interceptor application:application
+                                                                      openURL:url
+                                                            sourceApplication:sourceApplication
+                                                                   annotation:annotation];
+#pragma clang diagnostic pop
+                                  }];
+  if (openURLSourceApplicationAnnotationIMP) {
+    returnedValue |= openURLSourceApplicationAnnotationIMP(self, methodSelector, application, url,
+                                                           sourceApplication, annotation);
+  }
+  return returnedValue;
+}
+
+#endif  // TARGET_OS_IOS
+
+#pragma mark - [Donor Methods] Network overridden handler methods
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wstrict-prototypes"
+- (void)application:(GULApplication *)application
+    handleEventsForBackgroundURLSession:(NSString *)identifier
+                      completionHandler:(void (^)())completionHandler API_AVAILABLE(ios(7.0)) {
+#pragma clang diagnostic pop
+  SEL methodSelector = @selector(application:
+         handleEventsForBackgroundURLSession:completionHandler:);
+  NSValue *handleBackgroundSessionPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealHandleEventsForBackgroundURLSessionIMP handleBackgroundSessionIMP =
+      [handleBackgroundSessionPointer pointerValue];
+
+  // Notify interceptors.
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    [interceptor application:application
+                                        handleEventsForBackgroundURLSession:identifier
+                                                          completionHandler:completionHandler];
+                                  }];
+  // Call the real implementation if the real App Delegate has any.
+  if (handleBackgroundSessionIMP) {
+    handleBackgroundSessionIMP(self, methodSelector, application, identifier, completionHandler);
+  }
+}
+
+#endif  // TARGET_OS_IOS || TARGET_OS_TV
+
+#pragma mark - [Donor Methods] User Activities overridden handler methods
+
+- (BOOL)application:(GULApplication *)application
+    continueUserActivity:(NSUserActivity *)userActivity
+      restorationHandler:(void (^)(NSArray *restorableObjects))restorationHandler {
+  SEL methodSelector = @selector(application:continueUserActivity:restorationHandler:);
+  NSValue *continueUserActivityIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealContinueUserActivityIMP continueUserActivityIMP =
+      continueUserActivityIMPPointer.pointerValue;
+
+  __block BOOL returnedValue = NO;
+#if !TARGET_OS_WATCH
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    returnedValue |= [interceptor application:application
+                                                         continueUserActivity:userActivity
+                                                           restorationHandler:restorationHandler];
+                                  }];
+#endif
+  // Call the real implementation if the real App Delegate has any.
+  if (continueUserActivityIMP) {
+    returnedValue |= continueUserActivityIMP(self, methodSelector, application, userActivity,
+                                             restorationHandler);
+  }
+  return returnedValue;
+}
+
+#pragma mark - [Donor Methods] Remote Notifications
+
+- (void)application:(GULApplication *)application
+    donor_didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
+  SEL methodSelector = NSSelectorFromString(kGULDidRegisterForRemoteNotificationsSEL);
+
+  NSValue *didRegisterForRemoteNotificationsIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealDidRegisterForRemoteNotificationsIMP didRegisterForRemoteNotificationsIMP =
+      [didRegisterForRemoteNotificationsIMPPointer pointerValue];
+
+  // Notify interceptors.
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    NSInvocation *invocation = [GULAppDelegateSwizzler
+                                        appDelegateInvocationForSelector:methodSelector];
+                                    [invocation setTarget:interceptor];
+                                    [invocation setSelector:methodSelector];
+                                    [invocation setArgument:(void *)(&application) atIndex:2];
+                                    [invocation setArgument:(void *)(&deviceToken) atIndex:3];
+                                    [invocation invoke];
+                                  }];
+  // Call the real implementation if the real App Delegate has any.
+  if (didRegisterForRemoteNotificationsIMP) {
+    didRegisterForRemoteNotificationsIMP(self, methodSelector, application, deviceToken);
+  }
+}
+
+- (void)application:(GULApplication *)application
+    donor_didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
+  SEL methodSelector = NSSelectorFromString(kGULDidFailToRegisterForRemoteNotificationsSEL);
+  NSValue *didFailToRegisterForRemoteNotificationsIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealDidFailToRegisterForRemoteNotificationsIMP didFailToRegisterForRemoteNotificationsIMP =
+      [didFailToRegisterForRemoteNotificationsIMPPointer pointerValue];
+
+  // Notify interceptors.
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    NSInvocation *invocation = [GULAppDelegateSwizzler
+                                        appDelegateInvocationForSelector:methodSelector];
+                                    [invocation setTarget:interceptor];
+                                    [invocation setSelector:methodSelector];
+                                    [invocation setArgument:(void *)(&application) atIndex:2];
+                                    [invocation setArgument:(void *)(&error) atIndex:3];
+                                    [invocation invoke];
+                                  }];
+  // Call the real implementation if the real App Delegate has any.
+  if (didFailToRegisterForRemoteNotificationsIMP) {
+    didFailToRegisterForRemoteNotificationsIMP(self, methodSelector, application, error);
+  }
+}
+
+#if !TARGET_OS_WATCH && !TARGET_OS_OSX
+- (void)application:(GULApplication *)application
+    donor_didReceiveRemoteNotification:(NSDictionary *)userInfo
+                fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
+  SEL methodSelector = NSSelectorFromString(kGULDidReceiveRemoteNotificationWithCompletionSEL);
+  NSValue *didReceiveRemoteNotificationWithCompletionIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealDidReceiveRemoteNotificationWithCompletionIMP
+      didReceiveRemoteNotificationWithCompletionIMP =
+          [didReceiveRemoteNotificationWithCompletionIMPPointer pointerValue];
+
+  dispatch_group_t __block callbackGroup = dispatch_group_create();
+  NSMutableArray<NSNumber *> *__block fetchResults = [NSMutableArray array];
+
+  void (^localCompletionHandler)(UIBackgroundFetchResult) =
+      ^void(UIBackgroundFetchResult fetchResult) {
+        [fetchResults addObject:[NSNumber numberWithInt:(int)fetchResult]];
+        dispatch_group_leave(callbackGroup);
+      };
+
+  // Notify interceptors.
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    dispatch_group_enter(callbackGroup);
+
+                                    NSInvocation *invocation = [GULAppDelegateSwizzler
+                                        appDelegateInvocationForSelector:methodSelector];
+                                    [invocation setTarget:interceptor];
+                                    [invocation setSelector:methodSelector];
+                                    [invocation setArgument:(void *)(&application) atIndex:2];
+                                    [invocation setArgument:(void *)(&userInfo) atIndex:3];
+                                    [invocation setArgument:(void *)(&localCompletionHandler)
+                                                    atIndex:4];
+                                    [invocation invoke];
+                                  }];
+  // Call the real implementation if the real App Delegate has any.
+  if (didReceiveRemoteNotificationWithCompletionIMP) {
+    dispatch_group_enter(callbackGroup);
+
+    didReceiveRemoteNotificationWithCompletionIMP(self, methodSelector, application, userInfo,
+                                                  localCompletionHandler);
+  }
+
+  dispatch_group_notify(callbackGroup, dispatch_get_main_queue(), ^() {
+    BOOL allFetchesFailed = YES;
+    BOOL anyFetchHasNewData = NO;
+
+    for (NSNumber *oneResult in fetchResults) {
+      UIBackgroundFetchResult result = oneResult.intValue;
+
+      switch (result) {
+        case UIBackgroundFetchResultNoData:
+          allFetchesFailed = NO;
+          break;
+        case UIBackgroundFetchResultNewData:
+          allFetchesFailed = NO;
+          anyFetchHasNewData = YES;
+          break;
+        case UIBackgroundFetchResultFailed:
+
+          break;
+      }
+    }
+
+    UIBackgroundFetchResult finalFetchResult = UIBackgroundFetchResultNoData;
+
+    if (allFetchesFailed) {
+      finalFetchResult = UIBackgroundFetchResultFailed;
+    } else if (anyFetchHasNewData) {
+      finalFetchResult = UIBackgroundFetchResultNewData;
+    } else {
+      finalFetchResult = UIBackgroundFetchResultNoData;
+    }
+
+    completionHandler(finalFetchResult);
+  });
+}
+#endif  // !TARGET_OS_WATCH && !TARGET_OS_OSX
+
+- (void)application:(GULApplication *)application
+    donor_didReceiveRemoteNotification:(NSDictionary *)userInfo {
+  SEL methodSelector = NSSelectorFromString(kGULDidReceiveRemoteNotificationSEL);
+  NSValue *didReceiveRemoteNotificationIMPPointer =
+      [GULAppDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+  GULRealDidReceiveRemoteNotificationIMP didReceiveRemoteNotificationIMP =
+      [didReceiveRemoteNotificationIMPPointer pointerValue];
+
+  // Notify interceptors.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+  [GULAppDelegateSwizzler
+      notifyInterceptorsWithMethodSelector:methodSelector
+                                  callback:^(id<GULApplicationDelegate> interceptor) {
+                                    NSInvocation *invocation = [GULAppDelegateSwizzler
+                                        appDelegateInvocationForSelector:methodSelector];
+                                    [invocation setTarget:interceptor];
+                                    [invocation setSelector:methodSelector];
+                                    [invocation setArgument:(void *)(&application) atIndex:2];
+                                    [invocation setArgument:(void *)(&userInfo) atIndex:3];
+                                    [invocation invoke];
+                                  }];
+#pragma clang diagnostic pop
+  // Call the real implementation if the real App Delegate has any.
+  if (didReceiveRemoteNotificationIMP) {
+    didReceiveRemoteNotificationIMP(self, methodSelector, application, userInfo);
+  }
+}
+
++ (nullable NSInvocation *)appDelegateInvocationForSelector:(SEL)selector {
+  struct objc_method_description methodDescription =
+      protocol_getMethodDescription(@protocol(GULApplicationDelegate), selector, NO, YES);
+  if (methodDescription.types == NULL) {
+    return nil;
+  }
+
+  NSMethodSignature *signature = [NSMethodSignature signatureWithObjCTypes:methodDescription.types];
+  return [NSInvocation invocationWithMethodSignature:signature];
+}
+
++ (void)proxyAppDelegate:(id<GULApplicationDelegate>)appDelegate {
+  if (![appDelegate conformsToProtocol:@protocol(GULApplicationDelegate)]) {
+    GULLogNotice(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld",
+                             (long)kGULSwizzlerMessageCodeAppDelegateSwizzlingInvalidAppDelegate],
+        @"App Delegate does not conform to UIApplicationDelegate protocol. %@",
+        [GULAppDelegateSwizzler correctAlternativeWhenAppDelegateProxyNotCreated]);
+    return;
+  }
+
+  id<GULApplicationDelegate> originalDelegate = appDelegate;
+  // Do not create a subclass if it is not enabled.
+  if (![GULAppDelegateSwizzler isAppDelegateProxyEnabled]) {
+    GULLogNotice(kGULLoggerSwizzler, NO,
+                 [NSString stringWithFormat:@"I-SWZ%06ld",
+                                            (long)kGULSwizzlerMessageCodeAppDelegateSwizzling011],
+                 @"App Delegate Proxy is disabled. %@",
+                 [GULAppDelegateSwizzler correctAlternativeWhenAppDelegateProxyNotCreated]);
+    return;
+  }
+  // Do not accept nil delegate.
+  if (!originalDelegate) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling012],
+                @"Cannot create App Delegate Proxy because App Delegate instance is nil. %@",
+                [GULAppDelegateSwizzler correctAlternativeWhenAppDelegateProxyNotCreated]);
+    return;
+  }
+
+  @try {
+    gOriginalAppDelegateClass = [originalDelegate class];
+    gAppDelegateSubclass = [self createSubclassWithObject:originalDelegate];
+    [self reassignAppDelegate];
+  } @catch (NSException *exception) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeAppDelegateSwizzling013],
+                @"Cannot create App Delegate Proxy. %@",
+                [GULAppDelegateSwizzler correctAlternativeWhenAppDelegateProxyNotCreated]);
+    return;
+  }
+}
+
+#pragma mark - Methods to print correct debug logs
+
++ (NSString *)correctAppDelegateProxyKey {
+  return NSClassFromString(@"FIRCore") ? kGULFirebaseAppDelegateProxyEnabledPlistKey
+                                       : kGULGoogleUtilitiesAppDelegateProxyEnabledPlistKey;
+}
+
++ (NSString *)correctAlternativeWhenAppDelegateProxyNotCreated {
+  return NSClassFromString(@"FIRCore")
+             ? @"To log deep link campaigns manually, call the methods in "
+               @"FIRAnalytics+AppDelegate.h."
+             : @"";
+}
+
+#pragma mark - Private Methods for Testing
+
++ (void)clearInterceptors {
+  [[self interceptors] removeAllObjects];
+}
+
++ (void)resetProxyOriginalDelegateOnceToken {
+  sProxyAppDelegateOnceToken = 0;
+  sProxyAppDelegateRemoteNotificationOnceToken = 0;
+}
+
++ (id<GULApplicationDelegate>)originalDelegate {
+  return gOriginalAppDelegate;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULSceneDelegateSwizzler.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULSceneDelegateSwizzler.m
new file mode 100644
index 0000000..36ba1ca
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/GULSceneDelegateSwizzler.m	
@@ -0,0 +1,439 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <TargetConditionals.h>
+
+#import "GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULSceneDelegateSwizzler.h"
+
+#import "GoogleUtilities/AppDelegateSwizzler/Internal/GULSceneDelegateSwizzler_Private.h"
+#import "GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h"
+#import "GoogleUtilities/Common/GULLoggerCodes.h"
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h"
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+
+#import <objc/runtime.h>
+
+#if UISCENE_SUPPORTED
+API_AVAILABLE(ios(13.0), tvos(13.0))
+typedef void (*GULOpenURLContextsIMP)(id, SEL, UIScene *, NSSet<UIOpenURLContext *> *);
+
+API_AVAILABLE(ios(13.0), tvos(13.0))
+typedef void (^GULSceneDelegateInterceptorCallback)(id<UISceneDelegate>);
+
+// The strings below are the keys for associated objects.
+static char const *const kGULRealIMPBySelectorKey = "GUL_realIMPBySelector";
+static char const *const kGULRealClassKey = "GUL_realClass";
+#endif  // UISCENE_SUPPORTED
+
+static GULLoggerService kGULLoggerSwizzler = @"[GoogleUtilities/SceneDelegateSwizzler]";
+
+// Since Firebase SDKs also use this for app delegate proxying, in order to not be a breaking change
+// we disable App Delegate proxying when either of these two flags are set to NO.
+
+/** Plist key that allows Firebase developers to disable App and Scene Delegate Proxying. */
+static NSString *const kGULFirebaseSceneDelegateProxyEnabledPlistKey =
+    @"FirebaseAppDelegateProxyEnabled";
+
+/** Plist key that allows developers not using Firebase to disable App and Scene Delegate Proxying.
+ */
+static NSString *const kGULGoogleUtilitiesSceneDelegateProxyEnabledPlistKey =
+    @"GoogleUtilitiesAppDelegateProxyEnabled";
+
+/** The prefix of the Scene Delegate. */
+static NSString *const kGULSceneDelegatePrefix = @"GUL_";
+
+/**
+ * This class is necessary to store the delegates in an NSArray without retaining them.
+ * [NSValue valueWithNonRetainedObject] also provides this functionality, but does not provide a
+ * zeroing pointer. This will cause EXC_BAD_ACCESS when trying to access the object after it is
+ * dealloced. Instead, this container stores a weak, zeroing reference to the object, which
+ * automatically is set to nil by the runtime when the object is dealloced.
+ */
+@interface GULSceneZeroingWeakContainer : NSObject
+
+/** Stores a weak object. */
+@property(nonatomic, weak) id object;
+
+@end
+
+@implementation GULSceneZeroingWeakContainer
+@end
+
+@implementation GULSceneDelegateSwizzler
+
+#pragma mark - Public methods
+
++ (BOOL)isSceneDelegateProxyEnabled {
+  return [GULAppDelegateSwizzler isAppDelegateProxyEnabled];
+}
+
++ (void)proxyOriginalSceneDelegate {
+#if UISCENE_SUPPORTED
+  if ([GULAppEnvironmentUtil isAppExtension]) {
+    return;
+  }
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    if (@available(iOS 13.0, tvOS 13.0, *)) {
+      if (![GULSceneDelegateSwizzler isSceneDelegateProxyEnabled]) {
+        return;
+      }
+      [[NSNotificationCenter defaultCenter]
+          addObserver:self
+             selector:@selector(handleSceneWillConnectToNotification:)
+                 name:UISceneWillConnectNotification
+               object:nil];
+    }
+  });
+#endif  // UISCENE_SUPPORTED
+}
+
+#if UISCENE_SUPPORTED
++ (GULSceneDelegateInterceptorID)registerSceneDelegateInterceptor:(id<UISceneDelegate>)interceptor {
+  NSAssert(interceptor, @"SceneDelegateProxy cannot add nil interceptor");
+  NSAssert([interceptor conformsToProtocol:@protocol(UISceneDelegate)],
+           @"SceneDelegateProxy interceptor does not conform to UIApplicationDelegate");
+
+  if (!interceptor) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling000],
+                @"SceneDelegateProxy cannot add nil interceptor.");
+    return nil;
+  }
+  if (![interceptor conformsToProtocol:@protocol(UISceneDelegate)]) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling001],
+                @"SceneDelegateProxy interceptor does not conform to UIApplicationDelegate");
+    return nil;
+  }
+
+  // The ID should be the same given the same interceptor object.
+  NSString *interceptorID =
+      [NSString stringWithFormat:@"%@%p", kGULSceneDelegatePrefix, interceptor];
+  if (!interceptorID.length) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling002],
+                @"SceneDelegateProxy cannot create Interceptor ID.");
+    return nil;
+  }
+  GULSceneZeroingWeakContainer *weakObject = [[GULSceneZeroingWeakContainer alloc] init];
+  weakObject.object = interceptor;
+  [GULSceneDelegateSwizzler interceptors][interceptorID] = weakObject;
+  return interceptorID;
+}
+
++ (void)unregisterSceneDelegateInterceptorWithID:(GULSceneDelegateInterceptorID)interceptorID {
+  NSAssert(interceptorID, @"SceneDelegateProxy cannot unregister nil interceptor ID.");
+  NSAssert(((NSString *)interceptorID).length != 0,
+           @"SceneDelegateProxy cannot unregister empty interceptor ID.");
+
+  if (!interceptorID) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling003],
+                @"SceneDelegateProxy cannot unregister empty interceptor ID.");
+    return;
+  }
+
+  GULSceneZeroingWeakContainer *weakContainer =
+      [GULSceneDelegateSwizzler interceptors][interceptorID];
+  if (!weakContainer.object) {
+    GULLogError(kGULLoggerSwizzler, NO,
+                [NSString stringWithFormat:@"I-SWZ%06ld",
+                                           (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling004],
+                @"SceneDelegateProxy cannot unregister interceptor that was not registered. "
+                 "Interceptor ID %@",
+                interceptorID);
+    return;
+  }
+
+  [[GULSceneDelegateSwizzler interceptors] removeObjectForKey:interceptorID];
+}
+
+#pragma mark - Helper methods
+
++ (GULMutableDictionary *)interceptors {
+  static dispatch_once_t onceToken;
+  static GULMutableDictionary *sInterceptors;
+  dispatch_once(&onceToken, ^{
+    sInterceptors = [[GULMutableDictionary alloc] init];
+  });
+  return sInterceptors;
+}
+
++ (void)clearInterceptors {
+  [[self interceptors] removeAllObjects];
+}
+
++ (nullable NSValue *)originalImplementationForSelector:(SEL)selector object:(id)object {
+  NSDictionary *realImplementationBySelector =
+      objc_getAssociatedObject(object, &kGULRealIMPBySelectorKey);
+  return realImplementationBySelector[NSStringFromSelector(selector)];
+}
+
++ (void)proxyDestinationSelector:(SEL)destinationSelector
+    implementationsFromSourceSelector:(SEL)sourceSelector
+                            fromClass:(Class)sourceClass
+                              toClass:(Class)destinationClass
+                            realClass:(Class)realClass
+     storeDestinationImplementationTo:
+         (NSMutableDictionary<NSString *, NSValue *> *)destinationImplementationsBySelector {
+  [self addInstanceMethodWithDestinationSelector:destinationSelector
+            withImplementationFromSourceSelector:sourceSelector
+                                       fromClass:sourceClass
+                                         toClass:destinationClass];
+  IMP sourceImplementation =
+      [GULSceneDelegateSwizzler implementationOfMethodSelector:destinationSelector
+                                                     fromClass:realClass];
+  NSValue *sourceImplementationPointer = [NSValue valueWithPointer:sourceImplementation];
+
+  NSString *destinationSelectorString = NSStringFromSelector(destinationSelector);
+  destinationImplementationsBySelector[destinationSelectorString] = sourceImplementationPointer;
+}
+
+/** Copies a method identified by the methodSelector from one class to the other. After this method
+ *  is called, performing [toClassInstance methodSelector] will be similar to calling
+ *  [fromClassInstance methodSelector]. This method does nothing if toClass already has a method
+ *  identified by methodSelector.
+ *
+ *  @param methodSelector The SEL that identifies both the method on the fromClass as well as the
+ *      one on the toClass.
+ *  @param fromClass The class from which a method is sourced.
+ *  @param toClass The class to which the method is added. If the class already has a method with
+ *      the same selector, this has no effect.
+ */
++ (void)addInstanceMethodWithSelector:(SEL)methodSelector
+                            fromClass:(Class)fromClass
+                              toClass:(Class)toClass {
+  [self addInstanceMethodWithDestinationSelector:methodSelector
+            withImplementationFromSourceSelector:methodSelector
+                                       fromClass:fromClass
+                                         toClass:toClass];
+}
+
+/** Copies a method identified by the sourceSelector from the fromClass as a method for the
+ *  destinationSelector on the toClass. After this method is called, performing
+ *  [toClassInstance destinationSelector] will be similar to calling
+ *  [fromClassInstance sourceSelector]. This method does nothing if toClass already has a method
+ *  identified by destinationSelector.
+ *
+ *  @param destinationSelector The SEL that identifies the method on the toClass.
+ *  @param sourceSelector The SEL that identifies the method on the fromClass.
+ *  @param fromClass The class from which a method is sourced.
+ *  @param toClass The class to which the method is added. If the class already has a method with
+ *      the same selector, this has no effect.
+ */
++ (void)addInstanceMethodWithDestinationSelector:(SEL)destinationSelector
+            withImplementationFromSourceSelector:(SEL)sourceSelector
+                                       fromClass:(Class)fromClass
+                                         toClass:(Class)toClass {
+  Method method = class_getInstanceMethod(fromClass, sourceSelector);
+  IMP methodIMP = method_getImplementation(method);
+  const char *types = method_getTypeEncoding(method);
+  if (!class_addMethod(toClass, destinationSelector, methodIMP, types)) {
+    GULLogWarning(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld", (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling009],
+        @"Cannot copy method to destination selector %@ as it already exists",
+        NSStringFromSelector(destinationSelector));
+  }
+}
+
+/** Gets the IMP of the instance method on the class identified by the selector.
+ *
+ *  @param selector The selector of which the IMP is to be fetched.
+ *  @param aClass The class from which the IMP is to be fetched.
+ *  @return The IMP of the instance method identified by selector and aClass.
+ */
++ (IMP)implementationOfMethodSelector:(SEL)selector fromClass:(Class)aClass {
+  Method aMethod = class_getInstanceMethod(aClass, selector);
+  return method_getImplementation(aMethod);
+}
+
+/** Enumerates through all the interceptors and if they respond to a given selector, executes a
+ *  GULSceneDelegateInterceptorCallback with the interceptor.
+ *
+ *  @param methodSelector The SEL to check if an interceptor responds to.
+ *  @param callback the GULSceneDelegateInterceptorCallback.
+ */
++ (void)notifyInterceptorsWithMethodSelector:(SEL)methodSelector
+                                    callback:(GULSceneDelegateInterceptorCallback)callback
+    API_AVAILABLE(ios(13.0)) {
+  if (!callback) {
+    return;
+  }
+
+  NSDictionary *interceptors = [GULSceneDelegateSwizzler interceptors].dictionary;
+  [interceptors enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+    GULSceneZeroingWeakContainer *interceptorContainer = obj;
+    id interceptor = interceptorContainer.object;
+    if (!interceptor) {
+      GULLogWarning(
+          kGULLoggerSwizzler, NO,
+          [NSString stringWithFormat:@"I-SWZ%06ld",
+                                     (long)kGULSwizzlerMessageCodeSceneDelegateSwizzling010],
+          @"SceneDelegateProxy cannot find interceptor with ID %@. Removing the interceptor.", key);
+      [[GULSceneDelegateSwizzler interceptors] removeObjectForKey:key];
+      return;
+    }
+    if ([interceptor respondsToSelector:methodSelector]) {
+      callback(interceptor);
+    }
+  }];
+}
+
++ (void)handleSceneWillConnectToNotification:(NSNotification *)notification {
+  if (@available(iOS 13.0, tvOS 13.0, *)) {
+    if ([notification.object isKindOfClass:[UIScene class]]) {
+      UIScene *scene = (UIScene *)notification.object;
+      [GULSceneDelegateSwizzler proxySceneDelegateIfNeeded:scene];
+    }
+  }
+}
+
+#pragma mark - [Donor Methods] UISceneDelegate URL handler
+
+- (void)scene:(UIScene *)scene
+    openURLContexts:(NSSet<UIOpenURLContext *> *)URLContexts API_AVAILABLE(ios(13.0), tvos(13.0)) {
+  if (@available(iOS 13.0, tvOS 13.0, *)) {
+    SEL methodSelector = @selector(scene:openURLContexts:);
+    // Call the real implementation if the real Scene Delegate has any.
+    NSValue *openURLContextsIMPPointer =
+        [GULSceneDelegateSwizzler originalImplementationForSelector:methodSelector object:self];
+    GULOpenURLContextsIMP openURLContextsIMP = [openURLContextsIMPPointer pointerValue];
+
+    [GULSceneDelegateSwizzler
+        notifyInterceptorsWithMethodSelector:methodSelector
+                                    callback:^(id<UISceneDelegate> interceptor) {
+                                      if ([interceptor
+                                              conformsToProtocol:@protocol(UISceneDelegate)]) {
+                                        id<UISceneDelegate> sceneInterceptor =
+                                            (id<UISceneDelegate>)interceptor;
+                                        [sceneInterceptor scene:scene openURLContexts:URLContexts];
+                                      }
+                                    }];
+
+    if (openURLContextsIMP) {
+      openURLContextsIMP(self, methodSelector, scene, URLContexts);
+    }
+  }
+}
+
++ (void)proxySceneDelegateIfNeeded:(UIScene *)scene {
+  Class realClass = [scene.delegate class];
+  NSString *className = NSStringFromClass(realClass);
+
+  // Skip proxying if failed to get the delegate class name for some reason (e.g. `delegate == nil`)
+  // or the class has a prefix of kGULAppDelegatePrefix, which means it has been proxied before.
+  if (className == nil || [className hasPrefix:kGULSceneDelegatePrefix]) {
+    return;
+  }
+
+  NSString *classNameWithPrefix = [kGULSceneDelegatePrefix stringByAppendingString:className];
+  NSString *newClassName =
+      [NSString stringWithFormat:@"%@-%@", classNameWithPrefix, [NSUUID UUID].UUIDString];
+
+  if (NSClassFromString(newClassName)) {
+    GULLogError(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld",
+                             (long)
+                                 kGULSwizzlerMessageCodeSceneDelegateSwizzlingInvalidSceneDelegate],
+        @"Cannot create a proxy for Scene Delegate. Subclass already exists. Original Class"
+        @": %@, subclass: %@",
+        className, newClassName);
+    return;
+  }
+
+  // Register the new class as subclass of the real one. Do not allocate more than the real class
+  // size.
+  Class sceneDelegateSubClass = objc_allocateClassPair(realClass, newClassName.UTF8String, 0);
+  if (sceneDelegateSubClass == Nil) {
+    GULLogError(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld",
+                             (long)
+                                 kGULSwizzlerMessageCodeSceneDelegateSwizzlingInvalidSceneDelegate],
+        @"Cannot create a proxy for Scene Delegate. Subclass already exists. Original Class"
+        @": %@, subclass: Nil",
+        className);
+    return;
+  }
+
+  NSMutableDictionary<NSString *, NSValue *> *realImplementationsBySelector =
+      [[NSMutableDictionary alloc] init];
+
+  // For scene:openURLContexts:
+  SEL openURLContextsSEL = @selector(scene:openURLContexts:);
+  [self proxyDestinationSelector:openURLContextsSEL
+      implementationsFromSourceSelector:openURLContextsSEL
+                              fromClass:[GULSceneDelegateSwizzler class]
+                                toClass:sceneDelegateSubClass
+                              realClass:realClass
+       storeDestinationImplementationTo:realImplementationsBySelector];
+
+  // Store original implementations to a fake property of the original delegate.
+  objc_setAssociatedObject(scene.delegate, &kGULRealIMPBySelectorKey,
+                           [realImplementationsBySelector copy], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+  objc_setAssociatedObject(scene.delegate, &kGULRealClassKey, realClass,
+                           OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+
+  // The subclass size has to be exactly the same size with the original class size. The subclass
+  // cannot have more ivars/properties than its superclass since it will cause an offset in memory
+  // that can lead to overwriting the isa of an object in the next frame.
+  if (class_getInstanceSize(realClass) != class_getInstanceSize(sceneDelegateSubClass)) {
+    GULLogError(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld",
+                             (long)
+                                 kGULSwizzlerMessageCodeSceneDelegateSwizzlingInvalidSceneDelegate],
+        @"Cannot create subclass of Scene Delegate, because the created subclass is not the "
+        @"same size. %@",
+        className);
+    NSAssert(NO, @"Classes must be the same size to swizzle isa");
+    return;
+  }
+
+  // Make the newly created class to be the subclass of the real Scene Delegate class.
+  objc_registerClassPair(sceneDelegateSubClass);
+  if (object_setClass(scene.delegate, sceneDelegateSubClass)) {
+    GULLogDebug(
+        kGULLoggerSwizzler, NO,
+        [NSString
+            stringWithFormat:@"I-SWZ%06ld",
+                             (long)
+                                 kGULSwizzlerMessageCodeSceneDelegateSwizzlingInvalidSceneDelegate],
+        @"Successfully created Scene Delegate Proxy automatically. To disable the "
+        @"proxy, set the flag %@ to NO (Boolean) in the Info.plist",
+        [GULSceneDelegateSwizzler correctSceneDelegateProxyKey]);
+  }
+}
+
++ (NSString *)correctSceneDelegateProxyKey {
+  return NSClassFromString(@"FIRCore") ? kGULFirebaseSceneDelegateProxyEnabledPlistKey
+                                       : kGULGoogleUtilitiesSceneDelegateProxyEnabledPlistKey;
+}
+
+#endif  // UISCENE_SUPPORTED
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULAppDelegateSwizzler_Private.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULAppDelegateSwizzler_Private.h
new file mode 100644
index 0000000..38e9315
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULAppDelegateSwizzler_Private.h	
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+
+@class GULApplication;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GULAppDelegateSwizzler ()
+
+/** ISA Swizzles the given appDelegate as the original app delegate would be.
+ *
+ *  @param appDelegate The object that needs to be isa swizzled. This should conform to the
+ *      application delegate protocol.
+ */
++ (void)proxyAppDelegate:(id<GULApplicationDelegate>)appDelegate;
+
+/** Returns a dictionary containing interceptor IDs mapped to a GULZeroingWeakContainer.
+ *
+ *  @return A dictionary of the form {NSString : GULZeroingWeakContainer}, where the NSString is
+ *      the interceptorID.
+ */
++ (GULMutableDictionary *)interceptors;
+
+/** Deletes all the registered interceptors. */
++ (void)clearInterceptors;
+
+/** Resets the token that prevents the app delegate proxy from being isa swizzled multiple times. */
++ (void)resetProxyOriginalDelegateOnceToken;
+
+/** Returns the original app delegate that was proxied.
+ *
+ *  @return The original app delegate instance that was proxied.
+ */
++ (id<GULApplicationDelegate>)originalDelegate;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULSceneDelegateSwizzler_Private.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULSceneDelegateSwizzler_Private.h
new file mode 100644
index 0000000..89896f7
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Internal/GULSceneDelegateSwizzler_Private.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULSceneDelegateSwizzler.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GULSceneDelegateSwizzler ()
+
+#if UISCENE_SUPPORTED
+
+/** Returns a dictionary containing interceptor IDs mapped to a GULZeroingWeakContainer.
+ *
+ *  @return A dictionary of the form {NSString : GULZeroingWeakContainer}, where the NSString is
+ *      the interceptorID.
+ */
++ (GULMutableDictionary *)interceptors;
+
+/** Deletes all the registered interceptors. */
++ (void)clearInterceptors;
+
+/** ISA Swizzles the given appDelegate as the original app delegate would be.
+ *
+ *  @param scene The scene whose delegate needs to be isa swizzled. This should conform to the
+ *      scene delegate protocol.
+ */
++ (void)proxySceneDelegateIfNeeded:(UIScene *)scene API_AVAILABLE(ios(13.0), tvos(13.0));
+
+#endif  // UISCENE_SUPPORTED
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h
new file mode 100644
index 0000000..58dec49
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULAppDelegateSwizzler.h	
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULApplication.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NSString *const GULAppDelegateInterceptorID;
+
+/** This class contains methods that isa swizzle the app delegate. */
+@interface GULAppDelegateSwizzler : NSProxy
+
+/** Registers an app delegate interceptor whose methods will be invoked as they're invoked on the
+ *  original app delegate.
+ *
+ *  @param interceptor An instance of a class that conforms to the application delegate protocol.
+ *      The interceptor is NOT retained.
+ *  @return A unique GULAppDelegateInterceptorID if interceptor was successfully registered; nil
+ *      if it fails.
+ */
++ (nullable GULAppDelegateInterceptorID)registerAppDelegateInterceptor:
+    (id<GULApplicationDelegate>)interceptor;
+
+/** Unregisters an interceptor with the given ID if it exists.
+ *
+ *  @param interceptorID The object that was generated when the interceptor was registered.
+ */
++ (void)unregisterAppDelegateInterceptorWithID:(GULAppDelegateInterceptorID)interceptorID;
+
+/** This method ensures that the original app delegate has been proxied. Call this before
+ *  registering your interceptor. This method is safe to call multiple times (but it only proxies
+ *  the app delegate once).
+ *
+ *  This method doesn't proxy APNS related methods:
+ *  @code
+ *    - application:didRegisterForRemoteNotificationsWithDeviceToken:
+ *    - application:didFailToRegisterForRemoteNotificationsWithError:
+ *    - application:didReceiveRemoteNotification:fetchCompletionHandler:
+ *    - application:didReceiveRemoteNotification:
+ *  @endcode
+ *
+ *  To proxy these methods use +[GULAppDelegateSwizzler
+ *  proxyOriginalDelegateIncludingAPNSMethods]. The methods have to be proxied separately to
+ *  avoid potential warnings from Apple review about missing Push Notification Entitlement (e.g.
+ *  https://github.com/firebase/firebase-ios-sdk/issues/2807)
+ *
+ *  The method has no effect for extensions.
+ *
+ *  @see proxyOriginalDelegateIncludingAPNSMethods
+ */
++ (void)proxyOriginalDelegate;
+
+/** This method ensures that the original app delegate has been proxied including APNS related
+ *  methods. Call this before registering your interceptor. This method is safe to call multiple
+ *  times (but it only proxies the app delegate once) or
+ *  after +[GULAppDelegateSwizzler proxyOriginalDelegate]
+ *
+ *  This method calls +[GULAppDelegateSwizzler proxyOriginalDelegate] under the hood.
+ *  After calling this method the following App Delegate methods will be proxied in addition to
+ *  the methods proxied by proxyOriginalDelegate:
+ *  @code
+ *    - application:didRegisterForRemoteNotificationsWithDeviceToken:
+ *    - application:didFailToRegisterForRemoteNotificationsWithError:
+ *    - application:didReceiveRemoteNotification:fetchCompletionHandler:
+ *    - application:didReceiveRemoteNotification:
+ *  @endcode
+ *
+ *  The method has no effect for extensions.
+ *
+ *  @see proxyOriginalDelegate
+ */
++ (void)proxyOriginalDelegateIncludingAPNSMethods;
+
+/** Indicates whether app delegate proxy is explicitly disabled or enabled. Enabled by default.
+ *
+ *  @return YES if AppDelegateProxy is Enabled, NO otherwise.
+ */
++ (BOOL)isAppDelegateProxyEnabled;
+
+/** Returns the current sharedApplication.
+ *
+ *  @return the current application instance if in an app, or nil if in extension or if it doesn't
+ * exist.
+ */
++ (nullable GULApplication *)sharedApplication;
+
+/** Do not initialize this class. */
+- (instancetype)init NS_UNAVAILABLE;
+
+NS_ASSUME_NONNULL_END
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULApplication.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULApplication.h
new file mode 100644
index 0000000..8067212
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULApplication.h	
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+#define GULApplication UIApplication
+#define GULApplicationDelegate UIApplicationDelegate
+#define GULUserActivityRestoring UIUserActivityRestoring
+
+static NSString *const kGULApplicationClassName = @"UIApplication";
+
+#elif TARGET_OS_OSX
+
+#import <AppKit/AppKit.h>
+
+#define GULApplication NSApplication
+#define GULApplicationDelegate NSApplicationDelegate
+#define GULUserActivityRestoring NSUserActivityRestoring
+
+static NSString *const kGULApplicationClassName = @"NSApplication";
+
+#elif TARGET_OS_WATCH
+
+#import <WatchKit/WatchKit.h>
+
+// We match the according watchOS API but swizzling should not work in watch
+#define GULApplication WKExtension
+#define GULApplicationDelegate WKExtensionDelegate
+#define GULUserActivityRestoring NSUserActivityRestoring
+
+static NSString *const kGULApplicationClassName = @"WKExtension";
+
+#endif
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULSceneDelegateSwizzler.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULSceneDelegateSwizzler.h
new file mode 100644
index 0000000..ed080a3
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/AppDelegateSwizzler/Public/GoogleUtilities/GULSceneDelegateSwizzler.h	
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import <TargetConditionals.h>
+
+#if !TARGET_OS_OSX
+#import <UIKit/UIKit.h>
+#endif  // !TARGET_OS_OSX
+
+#if ((TARGET_OS_IOS || TARGET_OS_TV) && (__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000))
+#define UISCENE_SUPPORTED 1
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NSString *const GULSceneDelegateInterceptorID;
+
+/** This class contains methods that isa swizzle the scene delegate. */
+@interface GULSceneDelegateSwizzler : NSProxy
+
+#if UISCENE_SUPPORTED
+
+/** Registers a scene delegate interceptor whose methods will be invoked as they're invoked on the
+ *  original scene delegate.
+ *
+ *  @param interceptor An instance of a class that conforms to the application delegate protocol.
+ *      The interceptor is NOT retained.
+ *  @return A unique GULSceneDelegateInterceptorID if interceptor was successfully registered; nil
+ *      if it fails.
+ */
++ (nullable GULSceneDelegateInterceptorID)registerSceneDelegateInterceptor:
+    (id<UISceneDelegate>)interceptor API_AVAILABLE(ios(13.0), tvos(13.0));
+
+/** Unregisters an interceptor with the given ID if it exists.
+ *
+ *  @param interceptorID The object that was generated when the interceptor was registered.
+ */
++ (void)unregisterSceneDelegateInterceptorWithID:(GULSceneDelegateInterceptorID)interceptorID
+    API_AVAILABLE(ios(13.0), tvos(13.0));
+
+/** Do not initialize this class. */
+- (instancetype)init NS_UNAVAILABLE;
+
+#endif  // UISCENE_SUPPORTED
+
+/** This method ensures that the original scene delegate has been proxied. Call this before
+ *  registering your interceptor. This method is safe to call multiple times (but it only proxies
+ *  the scene delegate once).
+ *
+ *  The method has no effect for extensions.
+ */
++ (void)proxyOriginalSceneDelegate;
+
+/** Indicates whether scene delegate proxy is explicitly disabled or enabled. Enabled by default.
+ *
+ *  @return YES if SceneDelegateProxy is Enabled, NO otherwise.
+ */
++ (BOOL)isSceneDelegateProxyEnabled;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Common/GULLoggerCodes.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Common/GULLoggerCodes.h
new file mode 100644
index 0000000..053ce84
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Common/GULLoggerCodes.h	
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+typedef NS_ENUM(NSInteger, GULSwizzlerMessageCode) {
+  // App Delegate Swizzling.
+  kGULSwizzlerMessageCodeAppDelegateSwizzling000 = 1000,                 // I-SWZ001000
+  kGULSwizzlerMessageCodeAppDelegateSwizzling001 = 1001,                 // I-SWZ001001
+  kGULSwizzlerMessageCodeAppDelegateSwizzling002 = 1002,                 // I-SWZ001002
+  kGULSwizzlerMessageCodeAppDelegateSwizzling003 = 1003,                 // I-SWZ001003
+  kGULSwizzlerMessageCodeAppDelegateSwizzling004 = 1004,                 // I-SWZ001004
+  kGULSwizzlerMessageCodeAppDelegateSwizzling005 = 1005,                 // I-SWZ001005
+  kGULSwizzlerMessageCodeAppDelegateSwizzling006 = 1006,                 // I-SWZ001006
+  kGULSwizzlerMessageCodeAppDelegateSwizzling007 = 1007,                 // I-SWZ001007
+  kGULSwizzlerMessageCodeAppDelegateSwizzling008 = 1008,                 // I-SWZ001008
+  kGULSwizzlerMessageCodeAppDelegateSwizzling009 = 1009,                 // I-SWZ001009
+  kGULSwizzlerMessageCodeAppDelegateSwizzling010 = 1010,                 // I-SWZ001010
+  kGULSwizzlerMessageCodeAppDelegateSwizzling011 = 1011,                 // I-SWZ001011
+  kGULSwizzlerMessageCodeAppDelegateSwizzling012 = 1012,                 // I-SWZ001012
+  kGULSwizzlerMessageCodeAppDelegateSwizzling013 = 1013,                 // I-SWZ001013
+  kGULSwizzlerMessageCodeAppDelegateSwizzlingInvalidAppDelegate = 1014,  // I-SWZ001014
+
+  // Scene Delegate Swizzling.
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling000 = 1100,                   // I-SWZ001100
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling001 = 1101,                   // I-SWZ001101
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling002 = 1102,                   // I-SWZ001102
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling003 = 1103,                   // I-SWZ001103
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling004 = 1104,                   // I-SWZ001104
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling005 = 1105,                   // I-SWZ001105
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling006 = 1106,                   // I-SWZ001106
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling007 = 1107,                   // I-SWZ001107
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling008 = 1108,                   // I-SWZ001108
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling009 = 1109,                   // I-SWZ001109
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling010 = 1110,                   // I-SWZ001110
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling011 = 1111,                   // I-SWZ001111
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling012 = 1112,                   // I-SWZ001112
+  kGULSwizzlerMessageCodeSceneDelegateSwizzling013 = 1113,                   // I-SWZ001113
+  kGULSwizzlerMessageCodeSceneDelegateSwizzlingInvalidSceneDelegate = 1114,  // I-SWZ001114
+
+  // Method Swizzling.
+  kGULSwizzlerMessageCodeMethodSwizzling000 = 2000,  // I-SWZ002000
+};
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorage.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorage.m
new file mode 100644
index 0000000..f1d8ddc
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorage.m	
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorage.h"
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h"
+
+NSString *const kGULHeartbeatStorageDirectory = @"Google/FIRApp";
+
+@interface GULHeartbeatDateStorage ()
+
+/** The name of the file that stores heartbeat information. */
+@property(nonatomic, readonly) NSString *fileName;
+@end
+
+@implementation GULHeartbeatDateStorage
+
+@synthesize fileURL = _fileURL;
+
+- (instancetype)initWithFileName:(NSString *)fileName {
+  if (fileName == nil) return nil;
+
+  self = [super init];
+  if (self) {
+    _fileName = fileName;
+  }
+  return self;
+}
+
+/** Lazy getter for fileURL.
+ * @return fileURL where heartbeat information is stored.
+ */
+- (NSURL *)fileURL {
+  if (!_fileURL) {
+    NSURL *directoryURL = [self directoryPathURL];
+    [self checkAndCreateDirectory:directoryURL];
+    _fileURL = [directoryURL URLByAppendingPathComponent:_fileName];
+  }
+  return _fileURL;
+}
+
+/** Returns the URL path of the directory for heartbeat storage data.
+ * @return the URL path of the directory for heartbeat storage data.
+ */
+- (NSURL *)directoryPathURL {
+  NSArray<NSString *> *paths;
+#if TARGET_OS_TV
+  paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
+#else
+  paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
+#endif  // TARGET_OS_TV
+  NSString *rootPath = [paths lastObject];
+  NSURL *rootURL = [NSURL fileURLWithPath:rootPath];
+  NSURL *directoryURL = [rootURL URLByAppendingPathComponent:kGULHeartbeatStorageDirectory];
+  return directoryURL;
+}
+
+/** Check for the existence of the directory specified by the URL, and create it if it does not
+ * exist.
+ * @param directoryPathURL The path to the directory that needs to exist.
+ */
+- (void)checkAndCreateDirectory:(NSURL *)directoryPathURL {
+  NSError *error;
+  if (![directoryPathURL checkResourceIsReachableAndReturnError:&error]) {
+    NSError *error;
+    [[NSFileManager defaultManager] createDirectoryAtURL:directoryPathURL
+                             withIntermediateDirectories:YES
+                                              attributes:nil
+                                                   error:&error];
+  }
+}
+
+- (nullable NSDate *)heartbeatDateForTag:(NSString *)tag {
+  @synchronized(self.class) {
+    NSDictionary *heartbeatDictionary = [self heartbeatDictionaryWithFileURL:self.fileURL];
+    NSDate *heartbeatDate = heartbeatDictionary[tag];
+
+    // Validate the value type. If the storage file was corrupted or updated with a different format
+    // by a newer SDK version the value type may be different.
+    if (![heartbeatDate isKindOfClass:[NSDate class]]) {
+      heartbeatDate = nil;
+    }
+
+    return heartbeatDate;
+  }
+}
+
+- (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag {
+  // Synchronize on the class to ensure that the different instances of the class will not access
+  // the same file concurrently.
+  // TODO: Consider a different synchronization strategy here and in `-heartbeatDateForTag:` method.
+  // Currently no heartbeats can be read/written concurrently even if they are in different files.
+  @synchronized(self.class) {
+    NSMutableDictionary *heartbeatDictionary =
+        [[self heartbeatDictionaryWithFileURL:self.fileURL] mutableCopy];
+    heartbeatDictionary[tag] = date;
+    NSError *error;
+    BOOL isSuccess = [self writeDictionary:[heartbeatDictionary copy]
+                             forWritingURL:self.fileURL
+                                     error:&error];
+    return isSuccess;
+  }
+}
+
+- (NSDictionary *)heartbeatDictionaryWithFileURL:(NSURL *)readingFileURL {
+  NSDictionary *heartbeatDictionary;
+
+  NSError *error;
+  NSData *objectData = [NSData dataWithContentsOfURL:readingFileURL options:0 error:&error];
+
+  if (objectData.length > 0 && error == nil) {
+    NSSet<Class> *objectClasses =
+        [NSSet setWithArray:@[ NSDictionary.class, NSDate.class, NSString.class ]];
+    heartbeatDictionary = [GULSecureCoding unarchivedObjectOfClasses:objectClasses
+                                                            fromData:objectData
+                                                               error:&error];
+  }
+
+  if (heartbeatDictionary.count == 0 || error != nil) {
+    heartbeatDictionary = [NSDictionary dictionary];
+  }
+
+  return heartbeatDictionary;
+}
+
+- (BOOL)writeDictionary:(NSDictionary *)dictionary
+          forWritingURL:(NSURL *)writingFileURL
+                  error:(NSError **)outError {
+  // Archive a mutable copy `dictionary` for writing to disk. This is done for
+  // backwards compatibility. See Google Utilities issue #36 for more context.
+  // TODO: Remove usage of mutable copy in a future version of Google Utilities.
+  NSData *data = [GULSecureCoding archivedDataWithRootObject:[dictionary mutableCopy]
+                                                       error:outError];
+  if (data.length == 0) {
+    return NO;
+  }
+
+  return [data writeToURL:writingFileURL atomically:YES];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorageUserDefaults.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorageUserDefaults.m
new file mode 100644
index 0000000..f8f1159
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULHeartbeatDateStorageUserDefaults.m	
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorageUserDefaults.h"
+
+@interface GULHeartbeatDateStorageUserDefaults ()
+
+/** The storage to store the date of the last sent heartbeat. */
+@property(nonatomic, readonly) NSUserDefaults *userDefaults;
+
+/** The key for user defaults to store heartbeat information. */
+@property(nonatomic, readonly) NSString *key;
+
+@end
+
+@implementation GULHeartbeatDateStorageUserDefaults
+
+- (instancetype)initWithDefaults:(NSUserDefaults *)defaults key:(NSString *)key {
+  self = [super init];
+  if (self) {
+    _userDefaults = defaults;
+    _key = key;
+  }
+  return self;
+}
+
+- (NSMutableDictionary *)heartbeatDictionaryFromDefaults {
+  NSDictionary *heartbeatDict = [self.userDefaults objectForKey:self.key];
+  if (heartbeatDict != nil) {
+    return [heartbeatDict mutableCopy];
+  } else {
+    return [NSMutableDictionary dictionary];
+  }
+}
+
+- (nullable NSDate *)heartbeatDateForTag:(NSString *)tag {
+  NSDate *date = nil;
+  @synchronized(self.userDefaults) {
+    NSMutableDictionary *dict = [self heartbeatDictionaryFromDefaults];
+    date = dict[tag];
+  }
+
+  return date;
+}
+
+- (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag {
+  @synchronized(self.userDefaults) {
+    NSMutableDictionary *dict = [self heartbeatDictionaryFromDefaults];
+    dict[tag] = date;
+    [self.userDefaults setObject:dict forKey:self.key];
+  }
+  return true;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULSecureCoding.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULSecureCoding.m
new file mode 100644
index 0000000..21d5c2a
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/GULSecureCoding.m	
@@ -0,0 +1,103 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h"
+
+NSString *const kGULSecureCodingError = @"GULSecureCodingError";
+
+@implementation GULSecureCoding
+
++ (nullable id)unarchivedObjectOfClasses:(NSSet<Class> *)classes
+                                fromData:(NSData *)data
+                                   error:(NSError **)outError {
+  id object;
+#if __has_builtin(__builtin_available)
+  if (@available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)) {
+    object = [NSKeyedUnarchiver unarchivedObjectOfClasses:classes fromData:data error:outError];
+  } else
+#endif  // __has_builtin(__builtin_available)
+  {
+    @try {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
+#pragma clang diagnostic pop
+      unarchiver.requiresSecureCoding = YES;
+
+      object = [unarchiver decodeObjectOfClasses:classes forKey:NSKeyedArchiveRootObjectKey];
+    } @catch (NSException *exception) {
+      if (outError) {
+        *outError = [self archivingErrorWithException:exception];
+      }
+    }
+
+    if (object == nil && outError && *outError == nil) {
+      NSString *failureReason = @"NSKeyedUnarchiver failed to unarchive data.";
+      *outError = [NSError errorWithDomain:kGULSecureCodingError
+                                      code:-1
+                                  userInfo:@{NSLocalizedFailureReasonErrorKey : failureReason}];
+    }
+  }
+
+  return object;
+}
+
++ (nullable id)unarchivedObjectOfClass:(Class)class
+                              fromData:(NSData *)data
+                                 error:(NSError **)outError {
+  return [self unarchivedObjectOfClasses:[NSSet setWithObject:class] fromData:data error:outError];
+}
+
++ (nullable NSData *)archivedDataWithRootObject:(id<NSCoding>)object error:(NSError **)outError {
+  NSData *archiveData;
+#if __has_builtin(__builtin_available)
+  if (@available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)) {
+    archiveData = [NSKeyedArchiver archivedDataWithRootObject:object
+                                        requiringSecureCoding:YES
+                                                        error:outError];
+  } else
+#endif  // __has_builtin(__builtin_available)
+  {
+    @try {
+      NSMutableData *data = [NSMutableData data];
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+      NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
+#pragma clang diagnostic pop
+      archiver.requiresSecureCoding = YES;
+
+      [archiver encodeObject:object forKey:NSKeyedArchiveRootObjectKey];
+      [archiver finishEncoding];
+
+      archiveData = [data copy];
+    } @catch (NSException *exception) {
+      if (outError) {
+        *outError = [self archivingErrorWithException:exception];
+      }
+    }
+  }
+
+  return archiveData;
+}
+
++ (NSError *)archivingErrorWithException:(NSException *)exception {
+  NSString *failureReason = [NSString
+      stringWithFormat:@"NSKeyedArchiver exception with name: %@, reason: %@, userInfo: %@",
+                       exception.name, exception.reason, exception.userInfo];
+  NSDictionary *errorUserInfo = @{NSLocalizedFailureReasonErrorKey : failureReason};
+
+  return [NSError errorWithDomain:kGULSecureCodingError code:-1 userInfo:errorUserInfo];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h
new file mode 100644
index 0000000..72c46c2
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface GULAppEnvironmentUtil : NSObject
+
+/// Indicates whether the app is from Apple Store or not. Returns NO if the app is on simulator,
+/// development environment or sideloaded.
++ (BOOL)isFromAppStore;
+
+/// Indicates whether the app is a Testflight app. Returns YES if the app has sandbox receipt.
+/// Returns NO otherwise.
++ (BOOL)isAppStoreReceiptSandbox;
+
+/// Indicates whether the app is on simulator or not at runtime depending on the device
+/// architecture.
++ (BOOL)isSimulator;
+
+/// The current device model. Returns an empty string if device model cannot be retrieved.
++ (nullable NSString *)deviceModel;
+
+/// The current operating system version. Returns an empty string if the system version cannot be
+/// retrieved.
++ (NSString *)systemVersion;
+
+/// Indicates whether it is running inside an extension or an app.
++ (BOOL)isAppExtension;
+
+/// @return Returns @YES when is run on iOS version greater or equal to 7.0
++ (BOOL)isIOS7OrHigher DEPRECATED_MSG_ATTRIBUTE(
+    "Always `YES` because only iOS 8 and higher supported. The method will be removed.");
+
+/// @return YES if Swift runtime detected in the app.
++ (BOOL)hasSwiftRuntime __deprecated;
+
+/// @return An Apple platform. Possible values "ios", "tvos", "macos", "watchos", "maccatalyst".
++ (NSString *)applePlatform;
+
+/// @return The way the library was added to the app, e.g. "swiftpm", "cocoapods", etc.
++ (NSString *)deploymentType;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorable.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorable.h
new file mode 100644
index 0000000..43d3740
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorable.h	
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Describes an object that can store and fetch heartbeat dates for given tags.
+ */
+@protocol GULHeartbeatDateStorable <NSObject>
+
+/**
+ * Reads the date from the specified file for the given tag.
+ * @return Returns date if exists, otherwise `nil`.
+ */
+- (nullable NSDate *)heartbeatDateForTag:(NSString *)tag;
+
+/**
+ * Saves the date for the specified tag in the specified file.
+ * @return YES on success, NO otherwise.
+ */
+- (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorage.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorage.h
new file mode 100644
index 0000000..245b1a2
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorage.h	
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULHeartbeatDateStorable.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// The name of the directory where the heartbeat data is stored.
+extern NSString *const kGULHeartbeatStorageDirectory;
+
+/// Stores either a date or a dictionary to a specified file.
+@interface GULHeartbeatDateStorage : NSObject <GULHeartbeatDateStorable>
+
+- (instancetype)init NS_UNAVAILABLE;
+
+@property(nonatomic, readonly) NSURL *fileURL;
+
+/**
+ * Default initializer.
+ * @param fileName The name of the file to store the date information.
+ * exist, it will be created if needed.
+ */
+- (instancetype)initWithFileName:(NSString *)fileName;
+
+/**
+ * Reads the date from the specified file for the given tag.
+ * @return Returns date if exists, otherwise `nil`.
+ */
+- (nullable NSDate *)heartbeatDateForTag:(NSString *)tag;
+
+/**
+ * Saves the date for the specified tag in the specified file.
+ * @return YES on success, NO otherwise.
+ */
+- (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorageUserDefaults.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorageUserDefaults.h
new file mode 100644
index 0000000..e6c7dda
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULHeartbeatDateStorageUserDefaults.h	
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULHeartbeatDateStorable.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Stores either a date or a dictionary to a specified file.
+@interface GULHeartbeatDateStorageUserDefaults : NSObject <GULHeartbeatDateStorable>
+
+/**
+ * Default initializer. tvOS can only write to the cache directory and
+ * there are no guarantees that the directory will persist. User defaults will
+ * be retained, so that should be used instead.
+ * @param defaults User defaults instance to store the heartbeat information.
+ * @param key The key to be used with the user defaults instance.
+ */
+- (instancetype)initWithDefaults:(NSUserDefaults *)defaults key:(NSString *)key;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ * Reads the date from the specified file for the given tag.
+ * @return Returns date if exists, otherwise `nil`.
+ */
+- (nullable NSDate *)heartbeatDateForTag:(NSString *)tag;
+
+/**
+ * Saves the date for the specified tag in the specified file.
+ * @return YES on success, NO otherwise.
+ */
+- (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainStorage.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainStorage.h
new file mode 100644
index 0000000..dc01a83
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainStorage.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FBLPromise<ValueType>;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// The class provides a convenient abstraction on top of the iOS Keychain API to save data.
+@interface GULKeychainStorage : NSObject
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/** Initializes the keychain storage with Keychain Service name.
+ *  @param service A Keychain Service name that will be used to store and retrieve objects. See also
+ * `kSecAttrService`.
+ */
+- (instancetype)initWithService:(NSString *)service;
+
+/**
+ * Get an object by key.
+ * @param key The key.
+ * @param objectClass The expected object class required by `NSSecureCoding`.
+ * @param accessGroup The Keychain Access Group.
+ *
+ * @return Returns a promise. It is resolved with an object stored by key if exists. It is resolved
+ * with `nil` when the object not found. It fails on a Keychain error.
+ */
+- (FBLPromise<id<NSSecureCoding>> *)getObjectForKey:(NSString *)key
+                                        objectClass:(Class)objectClass
+                                        accessGroup:(nullable NSString *)accessGroup;
+
+/**
+ * Saves the given object by the given key.
+ * @param object The object to store.
+ * @param key The key to store the object. If there is an existing object by the key, it will be
+ * overridden.
+ * @param accessGroup The Keychain Access Group.
+ *
+ * @return Returns which is resolved with `[NSNull null]` on success.
+ */
+- (FBLPromise<NSNull *> *)setObject:(id<NSSecureCoding>)object
+                             forKey:(NSString *)key
+                        accessGroup:(nullable NSString *)accessGroup;
+
+/**
+ * Removes the object by the given key.
+ * @param key The key to store the object. If there is an existing object by the key, it will be
+ * overridden.
+ * @param accessGroup The Keychain Access Group.
+ *
+ * @return Returns which is resolved with `[NSNull null]` on success.
+ */
+- (FBLPromise<NSNull *> *)removeObjectForKey:(NSString *)key
+                                 accessGroup:(nullable NSString *)accessGroup;
+
+#if TARGET_OS_OSX
+/// If not `nil`, then only this keychain will be used to save and read data (see
+/// `kSecMatchSearchList` and `kSecUseKeychain`. It is mostly intended to be used by unit tests.
+@property(nonatomic, nullable) SecKeychainRef keychainRef;
+#endif  // TARGET_OSX
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainUtils.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainUtils.h
new file mode 100644
index 0000000..de4bef2
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainUtils.h	
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+FOUNDATION_EXPORT NSString *const kGULKeychainUtilsErrorDomain;
+
+/// Helper functions to access Keychain.
+@interface GULKeychainUtils : NSObject
+
+/** Fetches a keychain item data matching to the provided query.
+ *  @param query A dictionary with Keychain query parameters. See docs for `SecItemCopyMatching` for
+ * details.
+ *  @param outError A pointer to `NSError` instance or `NULL`. The instance at `outError` will be
+ * assigned with an error if there is.
+ *  @returns Data for the first Keychain Item matching the provided query or `nil` if there is not
+ * such an item (`outError` will be `nil` in this case) or an error occurred.
+ */
++ (nullable NSData *)getItemWithQuery:(NSDictionary *)query
+                                error:(NSError *_Nullable *_Nullable)outError;
+
+/** Stores data to a Keychain Item matching to the provided query. An existing Keychain Item
+ * matching the query parameters will be updated or a new will be created.
+ *  @param item A Keychain Item data to store.
+ *  @param query A dictionary with Keychain query parameters. See docs for `SecItemAdd` and
+ * `SecItemUpdate` for details.
+ *  @param outError A pointer to `NSError` instance or `NULL`. The instance at `outError` will be
+ * assigned with an error if there is.
+ *  @returns `YES` when data was successfully stored, `NO` otherwise.
+ */
++ (BOOL)setItem:(NSData *)item
+      withQuery:(NSDictionary *)query
+          error:(NSError *_Nullable *_Nullable)outError;
+
+/** Removes a Keychain Item matching to the provided query.
+ *  @param query A dictionary with Keychain query parameters. See docs for `SecItemDelete` for
+ * details.
+ *  @param outError A pointer to `NSError` instance or `NULL`. The instance at `outError` will be
+ * assigned with an error if there is.
+ *  @returns `YES` if the item was removed successfully or doesn't exist, `NO` otherwise.
+ */
++ (BOOL)removeItemWithQuery:(NSDictionary *)query error:(NSError *_Nullable *_Nullable)outError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h
new file mode 100644
index 0000000..8484b39
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h	
@@ -0,0 +1,36 @@
+// Copyright 2019 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The class wraps `NSKeyedArchiver` and `NSKeyedUnarchiver` API to provide a unified secure coding
+ *  methods for iOS versions before and after 11.
+ */
+@interface GULSecureCoding : NSObject
+
++ (nullable id)unarchivedObjectOfClasses:(NSSet<Class> *)classes
+                                fromData:(NSData *)data
+                                   error:(NSError **)outError;
+
++ (nullable id)unarchivedObjectOfClass:(Class)class
+                              fromData:(NSData *)data
+                                 error:(NSError **)outError;
+
++ (nullable NSData *)archivedDataWithRootObject:(id<NSCoding>)object error:(NSError **)outError;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULURLSessionDataResponse.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULURLSessionDataResponse.h
new file mode 100644
index 0000000..e88eb67
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/GULURLSessionDataResponse.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The class represents HTTP response received from `NSURLSession`. */
+@interface GULURLSessionDataResponse : NSObject
+
+@property(nonatomic, readonly) NSHTTPURLResponse *HTTPResponse;
+@property(nonatomic, nullable, readonly) NSData *HTTPBody;
+
+- (instancetype)initWithResponse:(NSHTTPURLResponse *)response HTTPBody:(nullable NSData *)body;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/NSURLSession+GULPromises.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/NSURLSession+GULPromises.h
new file mode 100644
index 0000000..7bed005
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/Public/GoogleUtilities/NSURLSession+GULPromises.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FBLPromise<Value>;
+@class GULURLSessionDataResponse;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** Promise based API for `NSURLSession`. */
+@interface NSURLSession (GULPromises)
+
+/** Creates a promise wrapping `-[NSURLSession dataTaskWithRequest:completionHandler:]` method.
+ * @param URLRequest The request to create a data task with.
+ * @return A promise that is fulfilled when an HTTP response is received (with any response code),
+ * or is rejected with the error passed to the task completion.
+ */
+- (FBLPromise<GULURLSessionDataResponse *> *)gul_dataTaskPromiseWithRequest:
+    (NSURLRequest *)URLRequest;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainStorage.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainStorage.m
new file mode 100644
index 0000000..3b4a2d9
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainStorage.m	
@@ -0,0 +1,192 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainStorage.h"
+#import <Security/Security.h>
+
+#if __has_include(<FBLPromises/FBLPromises.h>)
+#import <FBLPromises/FBLPromises.h>
+#else
+#import "FBLPromises.h"
+#endif
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainUtils.h"
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULSecureCoding.h"
+
+@interface GULKeychainStorage ()
+@property(nonatomic, readonly) dispatch_queue_t keychainQueue;
+@property(nonatomic, readonly) dispatch_queue_t inMemoryCacheQueue;
+@property(nonatomic, readonly) NSString *service;
+@property(nonatomic, readonly) NSCache<NSString *, id<NSSecureCoding>> *inMemoryCache;
+@end
+
+@implementation GULKeychainStorage
+
+- (instancetype)initWithService:(NSString *)service {
+  NSCache *cache = [[NSCache alloc] init];
+  // Cache up to 5 installations.
+  cache.countLimit = 5;
+  return [self initWithService:service cache:cache];
+}
+
+- (instancetype)initWithService:(NSString *)service cache:(NSCache *)cache {
+  self = [super init];
+  if (self) {
+    _keychainQueue =
+        dispatch_queue_create("com.gul.KeychainStorage.Keychain", DISPATCH_QUEUE_SERIAL);
+    _inMemoryCacheQueue =
+        dispatch_queue_create("com.gul.KeychainStorage.InMemoryCache", DISPATCH_QUEUE_SERIAL);
+    _service = [service copy];
+    _inMemoryCache = cache;
+  }
+  return self;
+}
+
+#pragma mark - Public
+
+- (FBLPromise<id<NSSecureCoding>> *)getObjectForKey:(NSString *)key
+                                        objectClass:(Class)objectClass
+                                        accessGroup:(nullable NSString *)accessGroup {
+  return [FBLPromise onQueue:self.inMemoryCacheQueue
+                          do:^id _Nullable {
+                            // Return cached object or fail otherwise.
+                            id object = [self.inMemoryCache objectForKey:key];
+                            return object
+                                       ?: [[NSError alloc]
+                                              initWithDomain:FBLPromiseErrorDomain
+                                                        code:FBLPromiseErrorCodeValidationFailure
+                                                    userInfo:nil];
+                          }]
+      .recover(^id _Nullable(NSError *error) {
+        // Look for the object in the keychain.
+        return [self getObjectFromKeychainForKey:key
+                                     objectClass:objectClass
+                                     accessGroup:accessGroup];
+      });
+}
+
+- (FBLPromise<NSNull *> *)setObject:(id<NSSecureCoding>)object
+                             forKey:(NSString *)key
+                        accessGroup:(nullable NSString *)accessGroup {
+  return [FBLPromise onQueue:self.inMemoryCacheQueue
+                          do:^id _Nullable {
+                            // Save to the in-memory cache first.
+                            [self.inMemoryCache setObject:object forKey:[key copy]];
+                            return [NSNull null];
+                          }]
+      .thenOn(self.keychainQueue, ^id(id result) {
+        // Then store the object to the keychain.
+        NSDictionary *query = [self keychainQueryWithKey:key accessGroup:accessGroup];
+        NSError *error;
+        NSData *encodedObject = [GULSecureCoding archivedDataWithRootObject:object error:&error];
+        if (!encodedObject) {
+          return error;
+        }
+
+        if (![GULKeychainUtils setItem:encodedObject withQuery:query error:&error]) {
+          return error;
+        }
+
+        return [NSNull null];
+      });
+}
+
+- (FBLPromise<NSNull *> *)removeObjectForKey:(NSString *)key
+                                 accessGroup:(nullable NSString *)accessGroup {
+  return [FBLPromise onQueue:self.inMemoryCacheQueue
+                          do:^id _Nullable {
+                            [self.inMemoryCache removeObjectForKey:key];
+                            return nil;
+                          }]
+      .thenOn(self.keychainQueue, ^id(id result) {
+        NSDictionary *query = [self keychainQueryWithKey:key accessGroup:accessGroup];
+
+        NSError *error;
+        if (![GULKeychainUtils removeItemWithQuery:query error:&error]) {
+          return error;
+        }
+
+        return [NSNull null];
+      });
+}
+
+#pragma mark - Private
+
+- (FBLPromise<id<NSSecureCoding>> *)getObjectFromKeychainForKey:(NSString *)key
+                                                    objectClass:(Class)objectClass
+                                                    accessGroup:(nullable NSString *)accessGroup {
+  // Look for the object in the keychain.
+  return [FBLPromise
+             onQueue:self.keychainQueue
+                  do:^id {
+                    NSDictionary *query = [self keychainQueryWithKey:key accessGroup:accessGroup];
+                    NSError *error;
+                    NSData *encodedObject = [GULKeychainUtils getItemWithQuery:query error:&error];
+
+                    if (error) {
+                      return error;
+                    }
+                    if (!encodedObject) {
+                      return nil;
+                    }
+                    id object = [GULSecureCoding unarchivedObjectOfClass:objectClass
+                                                                fromData:encodedObject
+                                                                   error:&error];
+                    if (error) {
+                      return error;
+                    }
+
+                    return object;
+                  }]
+      .thenOn(self.inMemoryCacheQueue,
+              ^id<NSSecureCoding> _Nullable(id<NSSecureCoding> _Nullable object) {
+                // Save object to the in-memory cache if exists and return the object.
+                if (object) {
+                  [self.inMemoryCache setObject:object forKey:[key copy]];
+                }
+                return object;
+              });
+}
+
+- (void)resetInMemoryCache {
+  [self.inMemoryCache removeAllObjects];
+}
+
+#pragma mark - Keychain
+
+- (NSMutableDictionary<NSString *, id> *)keychainQueryWithKey:(NSString *)key
+                                                  accessGroup:(nullable NSString *)accessGroup {
+  NSMutableDictionary<NSString *, id> *query = [NSMutableDictionary dictionary];
+
+  query[(__bridge NSString *)kSecClass] = (__bridge NSString *)kSecClassGenericPassword;
+  query[(__bridge NSString *)kSecAttrService] = self.service;
+  query[(__bridge NSString *)kSecAttrAccount] = key;
+
+  if (accessGroup) {
+    query[(__bridge NSString *)kSecAttrAccessGroup] = accessGroup;
+  }
+
+#if TARGET_OS_OSX
+  if (self.keychainRef) {
+    query[(__bridge NSString *)kSecUseKeychain] = (__bridge id)(self.keychainRef);
+    query[(__bridge NSString *)kSecMatchSearchList] = @[ (__bridge id)(self.keychainRef) ];
+  }
+#endif  // TARGET_OSX
+
+  return query;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainUtils.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainUtils.m
new file mode 100644
index 0000000..687e6a7
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/SecureStorage/GULKeychainUtils.m	
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2019 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULKeychainUtils.h"
+
+NSString *const kGULKeychainUtilsErrorDomain = @"com.gul.keychain.ErrorDomain";
+
+@implementation GULKeychainUtils
+
++ (nullable NSData *)getItemWithQuery:(NSDictionary *)query
+                                error:(NSError *_Nullable *_Nullable)outError {
+  NSMutableDictionary *mutableQuery = [query mutableCopy];
+
+  mutableQuery[(__bridge id)kSecReturnData] = @YES;
+  mutableQuery[(__bridge id)kSecMatchLimit] = (__bridge id)kSecMatchLimitOne;
+
+  CFDataRef result = NULL;
+  OSStatus status =
+      SecItemCopyMatching((__bridge CFDictionaryRef)mutableQuery, (CFTypeRef *)&result);
+
+  if (status == errSecSuccess && result != NULL) {
+    if (outError) {
+      *outError = nil;
+    }
+
+    return (__bridge_transfer NSData *)result;
+  }
+
+  if (status == errSecItemNotFound) {
+    if (outError) {
+      *outError = nil;
+    }
+  } else {
+    if (outError) {
+      *outError = [self keychainErrorWithFunction:@"SecItemCopyMatching" status:status];
+    }
+  }
+  return nil;
+}
+
++ (BOOL)setItem:(NSData *)item
+      withQuery:(NSDictionary *)query
+          error:(NSError *_Nullable *_Nullable)outError {
+  NSData *existingItem = [self getItemWithQuery:query error:outError];
+  if (outError && *outError) {
+    return NO;
+  }
+
+  NSMutableDictionary *mutableQuery = [query mutableCopy];
+  mutableQuery[(__bridge id)kSecAttrAccessible] =
+      (__bridge id)kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly;
+
+  OSStatus status;
+  if (!existingItem) {
+    mutableQuery[(__bridge id)kSecValueData] = item;
+    status = SecItemAdd((__bridge CFDictionaryRef)mutableQuery, NULL);
+  } else {
+    NSDictionary *attributes = @{(__bridge id)kSecValueData : item};
+    status = SecItemUpdate((__bridge CFDictionaryRef)query, (__bridge CFDictionaryRef)attributes);
+  }
+
+  if (status == noErr) {
+    if (outError) {
+      *outError = nil;
+    }
+    return YES;
+  }
+
+  NSString *function = existingItem ? @"SecItemUpdate" : @"SecItemAdd";
+  if (outError) {
+    *outError = [self keychainErrorWithFunction:function status:status];
+  }
+  return NO;
+}
+
++ (BOOL)removeItemWithQuery:(NSDictionary *)query error:(NSError *_Nullable *_Nullable)outError {
+  OSStatus status = SecItemDelete((__bridge CFDictionaryRef)query);
+
+  if (status == noErr || status == errSecItemNotFound) {
+    if (outError) {
+      *outError = nil;
+    }
+    return YES;
+  }
+
+  if (outError) {
+    *outError = [self keychainErrorWithFunction:@"SecItemDelete" status:status];
+  }
+  return NO;
+}
+
+#pragma mark - Errors
+
++ (NSError *)keychainErrorWithFunction:(NSString *)keychainFunction status:(OSStatus)status {
+  NSString *failureReason = [NSString stringWithFormat:@"%@ (%li)", keychainFunction, (long)status];
+  NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey : failureReason};
+  return [NSError errorWithDomain:kGULKeychainUtilsErrorDomain code:0 userInfo:userInfo];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/GULURLSessionDataResponse.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/GULURLSessionDataResponse.m
new file mode 100644
index 0000000..559875a
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/GULURLSessionDataResponse.m	
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULURLSessionDataResponse.h"
+
+@implementation GULURLSessionDataResponse
+
+- (instancetype)initWithResponse:(NSHTTPURLResponse *)response HTTPBody:(NSData *)body {
+  self = [super init];
+  if (self) {
+    _HTTPResponse = response;
+    _HTTPBody = body;
+  }
+  return self;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/NSURLSession+GULPromises.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/NSURLSession+GULPromises.m
new file mode 100644
index 0000000..6c70310
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/URLSessionPromiseWrapper/NSURLSession+GULPromises.m	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/NSURLSession+GULPromises.h"
+
+#if __has_include(<FBLPromises/FBLPromises.h>)
+#import <FBLPromises/FBLPromises.h>
+#else
+#import "FBLPromises.h"
+#endif
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULURLSessionDataResponse.h"
+
+@implementation NSURLSession (GULPromises)
+
+- (FBLPromise<GULURLSessionDataResponse *> *)gul_dataTaskPromiseWithRequest:
+    (NSURLRequest *)URLRequest {
+  return [FBLPromise async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+    [[self dataTaskWithRequest:URLRequest
+             completionHandler:^(NSData *_Nullable data, NSURLResponse *_Nullable response,
+                                 NSError *_Nullable error) {
+               if (error) {
+                 reject(error);
+               } else {
+                 fulfill([[GULURLSessionDataResponse alloc]
+                     initWithResponse:(NSHTTPURLResponse *)response
+                             HTTPBody:data]);
+               }
+             }] resume];
+  }];
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/third_party/GULAppEnvironmentUtil.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/third_party/GULAppEnvironmentUtil.m
new file mode 100644
index 0000000..0dca899
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Environment/third_party/GULAppEnvironmentUtil.m	
@@ -0,0 +1,333 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h"
+
+#import <Foundation/Foundation.h>
+#import <dlfcn.h>
+#import <mach-o/dyld.h>
+#import <sys/sysctl.h>
+#import <sys/utsname.h>
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#endif
+
+/// The encryption info struct and constants are missing from the iPhoneSimulator SDK, but not from
+/// the iPhoneOS or Mac OS X SDKs. Since one doesn't ever ship a Simulator binary, we'll just
+/// provide the definitions here.
+#if TARGET_OS_SIMULATOR && !defined(LC_ENCRYPTION_INFO)
+#define LC_ENCRYPTION_INFO 0x21
+struct encryption_info_command {
+  uint32_t cmd;
+  uint32_t cmdsize;
+  uint32_t cryptoff;
+  uint32_t cryptsize;
+  uint32_t cryptid;
+};
+#endif
+
+@implementation GULAppEnvironmentUtil
+
+/// A key for the Info.plist to enable or disable checking if the App Store is running in a sandbox.
+/// This will affect your data integrity when using Firebase Analytics, as it will disable some
+/// necessary checks.
+static NSString *const kFIRAppStoreReceiptURLCheckEnabledKey =
+    @"FirebaseAppStoreReceiptURLCheckEnabled";
+
+/// The file name of the sandbox receipt. This is available on iOS >= 8.0
+static NSString *const kFIRAIdentitySandboxReceiptFileName = @"sandboxReceipt";
+
+/// The following copyright from Landon J. Fuller applies to the isAppEncrypted function.
+///
+/// Copyright (c) 2017 Landon J. Fuller <landon@landonf.org>
+/// All rights reserved.
+///
+/// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+/// and associated documentation files (the "Software"), to deal in the Software without
+/// restriction, including without limitation the rights to use, copy, modify, merge, publish,
+/// distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+/// Software is furnished to do so, subject to the following conditions:
+///
+/// The above copyright notice and this permission notice shall be included in all copies or
+/// substantial portions of the Software.
+///
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+/// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+/// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+/// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+///
+/// Comment from <a href="http://iphonedevwiki.net/index.php/Crack_prevention">iPhone Dev Wiki
+/// Crack Prevention</a>:
+/// App Store binaries are signed by both their developer and Apple. This encrypts the binary so
+/// that decryption keys are needed in order to make the binary readable. When iOS executes the
+/// binary, the decryption keys are used to decrypt the binary into a readable state where it is
+/// then loaded into memory and executed. iOS can tell the encryption status of a binary via the
+/// cryptid structure member of LC_ENCRYPTION_INFO MachO load command. If cryptid is a non-zero
+/// value then the binary is encrypted.
+///
+/// 'Cracking' works by letting the kernel decrypt the binary then siphoning the decrypted data into
+/// a new binary file, resigning, and repackaging. This will only work on jailbroken devices as
+/// codesignature validation has been removed. Resigning takes place because while the codesignature
+/// doesn't have to be valid thanks to the jailbreak, it does have to be in place unless you have
+/// AppSync or similar to disable codesignature checks.
+///
+/// More information at <a href="http://landonf.org/2009/02/index.html">Landon Fuller's blog</a>
+static BOOL IsAppEncrypted() {
+  const struct mach_header *executableHeader = NULL;
+  for (uint32_t i = 0; i < _dyld_image_count(); i++) {
+    const struct mach_header *header = _dyld_get_image_header(i);
+    if (header && header->filetype == MH_EXECUTE) {
+      executableHeader = header;
+      break;
+    }
+  }
+
+  if (!executableHeader) {
+    return NO;
+  }
+
+  BOOL is64bit = (executableHeader->magic == MH_MAGIC_64);
+  uintptr_t cursor = (uintptr_t)executableHeader +
+                     (is64bit ? sizeof(struct mach_header_64) : sizeof(struct mach_header));
+  const struct segment_command *segmentCommand = NULL;
+  uint32_t i = 0;
+
+  while (i++ < executableHeader->ncmds) {
+    segmentCommand = (struct segment_command *)cursor;
+
+    if (!segmentCommand) {
+      continue;
+    }
+
+    if ((!is64bit && segmentCommand->cmd == LC_ENCRYPTION_INFO) ||
+        (is64bit && segmentCommand->cmd == LC_ENCRYPTION_INFO_64)) {
+      if (is64bit) {
+        struct encryption_info_command_64 *cryptCmd =
+            (struct encryption_info_command_64 *)segmentCommand;
+        return cryptCmd && cryptCmd->cryptid != 0;
+      } else {
+        struct encryption_info_command *cryptCmd = (struct encryption_info_command *)segmentCommand;
+        return cryptCmd && cryptCmd->cryptid != 0;
+      }
+    }
+    cursor += segmentCommand->cmdsize;
+  }
+
+  return NO;
+}
+
+static BOOL HasSCInfoFolder() {
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+  NSString *bundlePath = [NSBundle mainBundle].bundlePath;
+  NSString *scInfoPath = [bundlePath stringByAppendingPathComponent:@"SC_Info"];
+  return [[NSFileManager defaultManager] fileExistsAtPath:scInfoPath];
+#elif TARGET_OS_OSX
+  return NO;
+#endif
+}
+
+static BOOL HasEmbeddedMobileProvision() {
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+  return [[NSBundle mainBundle] pathForResource:@"embedded" ofType:@"mobileprovision"].length > 0;
+#elif TARGET_OS_OSX
+  return NO;
+#endif
+}
+
++ (BOOL)isFromAppStore {
+  static dispatch_once_t isEncryptedOnce;
+  static BOOL isEncrypted = NO;
+
+  dispatch_once(&isEncryptedOnce, ^{
+    isEncrypted = IsAppEncrypted();
+  });
+
+  if ([GULAppEnvironmentUtil isSimulator]) {
+    return NO;
+  }
+
+  // If an app contain the sandboxReceipt file, it means its coming from TestFlight
+  // This must be checked before the SCInfo Folder check below since TestFlight apps may
+  // also have an SCInfo folder.
+  if ([GULAppEnvironmentUtil isAppStoreReceiptSandbox]) {
+    return NO;
+  }
+
+  if (HasSCInfoFolder()) {
+    // When iTunes downloads a .ipa, it also gets a customized .sinf file which is added to the
+    // main SC_Info directory.
+    return YES;
+  }
+
+  // For iOS >= 8.0, iTunesMetadata.plist is moved outside of the sandbox. Any attempt to read
+  // the iTunesMetadata.plist outside of the sandbox will be rejected by Apple.
+  // If the app does not contain the embedded.mobileprovision which is stripped out by Apple when
+  // the app is submitted to store, then it is highly likely that it is from Apple Store.
+  return isEncrypted && !HasEmbeddedMobileProvision();
+}
+
++ (BOOL)isAppStoreReceiptSandbox {
+  // Since checking the App Store's receipt URL can be memory intensive, check the option in the
+  // Info.plist if developers opted out of this check.
+  id enableSandboxCheck =
+      [[NSBundle mainBundle] objectForInfoDictionaryKey:kFIRAppStoreReceiptURLCheckEnabledKey];
+  if (enableSandboxCheck && [enableSandboxCheck isKindOfClass:[NSNumber class]] &&
+      ![enableSandboxCheck boolValue]) {
+    return NO;
+  }
+
+  NSURL *appStoreReceiptURL = [NSBundle mainBundle].appStoreReceiptURL;
+  NSString *appStoreReceiptFileName = appStoreReceiptURL.lastPathComponent;
+  return [appStoreReceiptFileName isEqualToString:kFIRAIdentitySandboxReceiptFileName];
+}
+
++ (BOOL)isSimulator {
+#if TARGET_OS_SIMULATOR
+  return YES;
+#elif TARGET_OS_MACCATALYST
+  return NO;
+#elif TARGET_OS_IOS || TARGET_OS_TV
+  NSString *platform = [GULAppEnvironmentUtil deviceModel];
+  return [platform isEqual:@"x86_64"] || [platform isEqual:@"i386"];
+#elif TARGET_OS_OSX
+  return NO;
+#endif
+  return NO;
+}
+
++ (NSString *)deviceModel {
+  static dispatch_once_t once;
+  static NSString *deviceModel;
+
+#if TARGET_OS_OSX || TARGET_OS_MACCATALYST
+  dispatch_once(&once, ^{
+    // The `uname` function only returns x86_64 for Macs. Use `sysctlbyname` instead, but fall back
+    // to the `uname` function if it fails.
+    size_t size;
+    sysctlbyname("hw.model", NULL, &size, NULL, 0);
+    if (size > 0) {
+      char *machine = malloc(size);
+      sysctlbyname("hw.model", machine, &size, NULL, 0);
+      deviceModel = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];
+      free(machine);
+    } else {
+      struct utsname systemInfo;
+      if (uname(&systemInfo) == 0) {
+        deviceModel = [NSString stringWithUTF8String:systemInfo.machine];
+      }
+    }
+  });
+#else
+  dispatch_once(&once, ^{
+    struct utsname systemInfo;
+    if (uname(&systemInfo) == 0) {
+      deviceModel = [NSString stringWithUTF8String:systemInfo.machine];
+    }
+  });
+#endif  // TARGET_OS_OSX || TARGET_OS_MACCATALYST
+  return deviceModel;
+}
+
++ (NSString *)systemVersion {
+#if TARGET_OS_IOS
+  return [UIDevice currentDevice].systemVersion;
+#elif TARGET_OS_OSX || TARGET_OS_TV || TARGET_OS_WATCH
+  // Assemble the systemVersion, excluding the patch version if it's 0.
+  NSOperatingSystemVersion osVersion = [NSProcessInfo processInfo].operatingSystemVersion;
+  NSMutableString *versionString = [[NSMutableString alloc]
+      initWithFormat:@"%ld.%ld", (long)osVersion.majorVersion, (long)osVersion.minorVersion];
+  if (osVersion.patchVersion != 0) {
+    [versionString appendFormat:@".%ld", (long)osVersion.patchVersion];
+  }
+  return versionString;
+#endif
+}
+
++ (BOOL)isAppExtension {
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+  // Documented by <a href="https://goo.gl/RRB2Up">Apple</a>
+  BOOL appExtension = [[[NSBundle mainBundle] bundlePath] hasSuffix:@".appex"];
+  return appExtension;
+#elif TARGET_OS_OSX
+  return NO;
+#endif
+}
+
++ (BOOL)isIOS7OrHigher {
+  return YES;
+}
+
++ (BOOL)hasSwiftRuntime {
+  // The class
+  // [Swift._SwiftObject](https://github.com/apple/swift/blob/5eac3e2818eb340b11232aff83edfbd1c307fa03/stdlib/public/runtime/SwiftObject.h#L35)
+  // is a part of Swift runtime, so it should be present if Swift runtime is available.
+
+  BOOL hasSwiftRuntime =
+      objc_lookUpClass("Swift._SwiftObject") != nil ||
+      // Swift object class name before
+      // https://github.com/apple/swift/commit/9637b4a6e11ddca72f5f6dbe528efc7c92f14d01
+      objc_getClass("_TtCs12_SwiftObject") != nil;
+
+  return hasSwiftRuntime;
+}
+
++ (NSString *)applePlatform {
+  NSString *applePlatform = @"unknown";
+
+  // When a Catalyst app is run on macOS then both `TARGET_OS_MACCATALYST` and `TARGET_OS_IOS` are
+  // `true`, which means the condition list is order-sensitive.
+#if TARGET_OS_MACCATALYST
+  applePlatform = @"maccatalyst";
+#elif TARGET_OS_IOS
+#if defined(__IPHONE_14_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
+  if (@available(iOS 14.0, *)) {
+    // Early iOS 14 betas do not include isiOSAppOnMac (#6969)
+    applePlatform = ([[NSProcessInfo processInfo] respondsToSelector:@selector(isiOSAppOnMac)] &&
+                      [NSProcessInfo processInfo].isiOSAppOnMac) ? @"ios_on_mac" : @"ios";
+  } else {
+    applePlatform = @"ios";
+  }
+#else // defined(__IPHONE_14_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
+  applePlatform = @"ios";
+#endif // defined(__IPHONE_14_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
+
+#elif TARGET_OS_TV
+  applePlatform = @"tvos";
+#elif TARGET_OS_OSX
+  applePlatform = @"macos";
+#elif TARGET_OS_WATCH
+  applePlatform = @"watchos";
+#endif // TARGET_OS_MACCATALYST
+
+  return applePlatform;
+}
+
++ (NSString *)deploymentType {
+#if SWIFT_PACKAGE
+  NSString *deploymentType = @"swiftpm";
+#elif FIREBASE_BUILD_CARTHAGE
+  NSString *deploymentType = @"carthage";
+#elif FIREBASE_BUILD_ZIP_FILE
+  NSString *deploymentType = @"zip";
+#else
+  NSString *deploymentType = @"cocoapods";
+#endif
+
+  return deploymentType;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/GULLogger.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/GULLogger.m
new file mode 100644
index 0000000..c5f6f1d
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/GULLogger.m	
@@ -0,0 +1,215 @@
+// Copyright 2018 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+
+#include <asl.h>
+
+#import "GoogleUtilities/Environment/Public/GoogleUtilities/GULAppEnvironmentUtil.h"
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLoggerLevel.h"
+
+/// ASL client facility name used by GULLogger.
+const char *kGULLoggerASLClientFacilityName = "com.google.utilities.logger";
+
+static dispatch_once_t sGULLoggerOnceToken;
+
+static aslclient sGULLoggerClient;
+
+static dispatch_queue_t sGULClientQueue;
+
+static BOOL sGULLoggerDebugMode;
+
+static GULLoggerLevel sGULLoggerMaximumLevel;
+
+// Allow clients to register a version to include in the log.
+static NSString *sVersion = @"";
+
+static GULLoggerService kGULLoggerLogger = @"[GULLogger]";
+
+#ifdef DEBUG
+/// The regex pattern for the message code.
+static NSString *const kMessageCodePattern = @"^I-[A-Z]{3}[0-9]{6}$";
+static NSRegularExpression *sMessageCodeRegex;
+#endif
+
+void GULLoggerInitializeASL(void) {
+  dispatch_once(&sGULLoggerOnceToken, ^{
+    NSInteger majorOSVersion = [[GULAppEnvironmentUtil systemVersion] integerValue];
+    uint32_t aslOptions = ASL_OPT_STDERR;
+#if TARGET_OS_SIMULATOR
+    // The iOS 11 simulator doesn't need the ASL_OPT_STDERR flag.
+    if (majorOSVersion >= 11) {
+      aslOptions = 0;
+    }
+#else
+    // Devices running iOS 10 or higher don't need the ASL_OPT_STDERR flag.
+    if (majorOSVersion >= 10) {
+      aslOptions = 0;
+    }
+#endif  // TARGET_OS_SIMULATOR
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"  // asl is deprecated
+    // Initialize the ASL client handle.
+    sGULLoggerClient = asl_open(NULL, kGULLoggerASLClientFacilityName, aslOptions);
+    sGULLoggerMaximumLevel = GULLoggerLevelNotice;
+
+    // Set the filter used by system/device log. Initialize in default mode.
+    asl_set_filter(sGULLoggerClient, ASL_FILTER_MASK_UPTO(ASL_LEVEL_NOTICE));
+
+    sGULClientQueue = dispatch_queue_create("GULLoggingClientQueue", DISPATCH_QUEUE_SERIAL);
+    dispatch_set_target_queue(sGULClientQueue,
+                              dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0));
+#ifdef DEBUG
+    sMessageCodeRegex = [NSRegularExpression regularExpressionWithPattern:kMessageCodePattern
+                                                                  options:0
+                                                                    error:NULL];
+#endif
+  });
+}
+
+void GULLoggerEnableSTDERR(void) {
+  asl_add_log_file(sGULLoggerClient, STDERR_FILENO);
+}
+
+void GULLoggerForceDebug(void) {
+  // We should enable debug mode if we're not running from App Store.
+  if (![GULAppEnvironmentUtil isFromAppStore]) {
+    sGULLoggerDebugMode = YES;
+    GULSetLoggerLevel(GULLoggerLevelDebug);
+  }
+}
+
+__attribute__((no_sanitize("thread"))) void GULSetLoggerLevel(GULLoggerLevel loggerLevel) {
+  if (loggerLevel < GULLoggerLevelMin || loggerLevel > GULLoggerLevelMax) {
+    GULLogError(kGULLoggerLogger, NO, @"I-COR000023", @"Invalid logger level, %ld",
+                (long)loggerLevel);
+    return;
+  }
+  GULLoggerInitializeASL();
+  // We should not raise the logger level if we are running from App Store.
+  if (loggerLevel >= GULLoggerLevelNotice && [GULAppEnvironmentUtil isFromAppStore]) {
+    return;
+  }
+
+  sGULLoggerMaximumLevel = loggerLevel;
+  dispatch_async(sGULClientQueue, ^{
+    asl_set_filter(sGULLoggerClient, ASL_FILTER_MASK_UPTO(loggerLevel));
+  });
+}
+
+/**
+ * Check if the level is high enough to be loggable.
+ */
+__attribute__((no_sanitize("thread"))) BOOL GULIsLoggableLevel(GULLoggerLevel loggerLevel) {
+  GULLoggerInitializeASL();
+  if (sGULLoggerDebugMode) {
+    return YES;
+  }
+  return (BOOL)(loggerLevel <= sGULLoggerMaximumLevel);
+}
+
+#ifdef DEBUG
+void GULResetLogger(void) {
+  sGULLoggerOnceToken = 0;
+  sGULLoggerDebugMode = NO;
+}
+
+aslclient getGULLoggerClient(void) {
+  return sGULLoggerClient;
+}
+
+dispatch_queue_t getGULClientQueue(void) {
+  return sGULClientQueue;
+}
+
+BOOL getGULLoggerDebugMode(void) {
+  return sGULLoggerDebugMode;
+}
+#endif
+
+void GULLoggerRegisterVersion(NSString *version) {
+  sVersion = version;
+}
+
+void GULLogBasic(GULLoggerLevel level,
+                 GULLoggerService service,
+                 BOOL forceLog,
+                 NSString *messageCode,
+                 NSString *message,
+                 va_list args_ptr) {
+  GULLoggerInitializeASL();
+  if (!(level <= sGULLoggerMaximumLevel || sGULLoggerDebugMode || forceLog)) {
+    return;
+  }
+
+#ifdef DEBUG
+  NSCAssert(messageCode.length == 11, @"Incorrect message code length.");
+  NSRange messageCodeRange = NSMakeRange(0, messageCode.length);
+  NSUInteger numberOfMatches = [sMessageCodeRegex numberOfMatchesInString:messageCode
+                                                                  options:0
+                                                                    range:messageCodeRange];
+  NSCAssert(numberOfMatches == 1, @"Incorrect message code format.");
+#endif
+  NSString *logMsg;
+  if (args_ptr == NULL) {
+    logMsg = message;
+  } else {
+    logMsg = [[NSString alloc] initWithFormat:message arguments:args_ptr];
+  }
+  logMsg = [NSString stringWithFormat:@"%@ - %@[%@] %@", sVersion, service, messageCode, logMsg];
+  dispatch_async(sGULClientQueue, ^{
+    asl_log(sGULLoggerClient, NULL, (int)level, "%s", logMsg.UTF8String);
+  });
+}
+#pragma clang diagnostic pop
+
+/**
+ * Generates the logging functions using macros.
+ *
+ * Calling GULLogError({service}, @"I-XYZ000001", @"Configure %@ failed.", @"blah") shows:
+ * yyyy-mm-dd hh:mm:ss.SSS sender[PID] <Error> [{service}][I-XYZ000001] Configure blah failed.
+ * Calling GULLogDebug({service}, @"I-XYZ000001", @"Configure succeed.") shows:
+ * yyyy-mm-dd hh:mm:ss.SSS sender[PID] <Debug> [{service}][I-XYZ000001] Configure succeed.
+ */
+#define GUL_LOGGING_FUNCTION(level)                                                     \
+  void GULLog##level(GULLoggerService service, BOOL force, NSString *messageCode,       \
+                     NSString *message, ...) {                                          \
+    va_list args_ptr;                                                                   \
+    va_start(args_ptr, message);                                                        \
+    GULLogBasic(GULLoggerLevel##level, service, force, messageCode, message, args_ptr); \
+    va_end(args_ptr);                                                                   \
+  }
+
+GUL_LOGGING_FUNCTION(Error)
+GUL_LOGGING_FUNCTION(Warning)
+GUL_LOGGING_FUNCTION(Notice)
+GUL_LOGGING_FUNCTION(Info)
+GUL_LOGGING_FUNCTION(Debug)
+
+#undef GUL_MAKE_LOGGER
+
+#pragma mark - GULLoggerWrapper
+
+@implementation GULLoggerWrapper
+
++ (void)logWithLevel:(GULLoggerLevel)level
+         withService:(GULLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args {
+  GULLogBasic(level, service, NO, messageCode, message, args);
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h
new file mode 100644
index 0000000..6797399
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h	
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULLoggerLevel.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * The services used in the logger.
+ */
+typedef NSString *const GULLoggerService;
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+/**
+ * Initialize GULLogger.
+ */
+extern void GULLoggerInitializeASL(void);
+
+/**
+ * Override log level to Debug.
+ */
+void GULLoggerForceDebug(void);
+
+/**
+ * Turn on logging to STDERR.
+ */
+extern void GULLoggerEnableSTDERR(void);
+
+/**
+ * Changes the default logging level of GULLoggerLevelNotice to a user-specified level.
+ * The default level cannot be set above GULLoggerLevelNotice if the app is running from App Store.
+ * (required) log level (one of the GULLoggerLevel enum values).
+ */
+extern void GULSetLoggerLevel(GULLoggerLevel loggerLevel);
+
+/**
+ * Checks if the specified logger level is loggable given the current settings.
+ * (required) log level (one of the GULLoggerLevel enum values).
+ */
+extern BOOL GULIsLoggableLevel(GULLoggerLevel loggerLevel);
+
+/**
+ * Register version to include in logs.
+ * (required) version
+ */
+extern void GULLoggerRegisterVersion(NSString *version);
+
+/**
+ * Logs a message to the Xcode console and the device log. If running from AppStore, will
+ * not log any messages with a level higher than GULLoggerLevelNotice to avoid log spamming.
+ * (required) log level (one of the GULLoggerLevel enum values).
+ * (required) service name of type GULLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+extern void GULLogBasic(GULLoggerLevel level,
+                        GULLoggerService service,
+                        BOOL forceLog,
+                        NSString *messageCode,
+                        NSString *message,
+// On 64-bit simulators, va_list is not a pointer, so cannot be marked nullable
+// See: http://stackoverflow.com/q/29095469
+#if __LP64__ && TARGET_OS_SIMULATOR || TARGET_OS_OSX
+                        va_list args_ptr
+#else
+                        va_list _Nullable args_ptr
+#endif
+);
+
+/**
+ * The following functions accept the following parameters in order:
+ * (required) service name of type GULLoggerService.
+ * (required) message code starting from "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ *            See go/firebase-log-proposal for details.
+ * (required) message string which can be a format string.
+ * (optional) the list of arguments to substitute into the format string.
+ * Example usage:
+ * GULLogError(kGULLoggerCore, @"I-COR000001", @"Configuration of %@ failed.", app.name);
+ */
+extern void GULLogError(GULLoggerService service,
+                        BOOL force,
+                        NSString *messageCode,
+                        NSString *message,
+                        ...) NS_FORMAT_FUNCTION(4, 5);
+extern void GULLogWarning(GULLoggerService service,
+                          BOOL force,
+                          NSString *messageCode,
+                          NSString *message,
+                          ...) NS_FORMAT_FUNCTION(4, 5);
+extern void GULLogNotice(GULLoggerService service,
+                         BOOL force,
+                         NSString *messageCode,
+                         NSString *message,
+                         ...) NS_FORMAT_FUNCTION(4, 5);
+extern void GULLogInfo(GULLoggerService service,
+                       BOOL force,
+                       NSString *messageCode,
+                       NSString *message,
+                       ...) NS_FORMAT_FUNCTION(4, 5);
+extern void GULLogDebug(GULLoggerService service,
+                        BOOL force,
+                        NSString *messageCode,
+                        NSString *message,
+                        ...) NS_FORMAT_FUNCTION(4, 5);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+@interface GULLoggerWrapper : NSObject
+
+/**
+ * Objective-C wrapper for GULLogBasic to allow weak linking to GULLogger
+ * (required) log level (one of the GULLoggerLevel enum values).
+ * (required) service name of type GULLoggerService.
+ * (required) message code starting with "I-" which means iOS, followed by a capitalized
+ *            three-character service identifier and a six digit integer message ID that is unique
+ *            within the service.
+ *            An example of the message code is @"I-COR000001".
+ * (required) message string which can be a format string.
+ * (optional) variable arguments list obtained from calling va_start, used when message is a format
+ *            string.
+ */
+
++ (void)logWithLevel:(GULLoggerLevel)level
+         withService:(GULLoggerService)service
+            withCode:(NSString *)messageCode
+         withMessage:(NSString *)message
+            withArgs:(va_list)args;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLoggerLevel.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLoggerLevel.h
new file mode 100644
index 0000000..f0ee435
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Logger/Public/GoogleUtilities/GULLoggerLevel.h	
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/**
+ * The log levels used by internal logging.
+ */
+typedef NS_ENUM(NSInteger, GULLoggerLevel) {
+  /** Error level, matches ASL_LEVEL_ERR. */
+  GULLoggerLevelError = 3,
+  /** Warning level, matches ASL_LEVEL_WARNING. */
+  GULLoggerLevelWarning = 4,
+  /** Notice level, matches ASL_LEVEL_NOTICE. */
+  GULLoggerLevelNotice = 5,
+  /** Info level, matches ASL_LEVEL_INFO. */
+  GULLoggerLevelInfo = 6,
+  /** Debug level, matches ASL_LEVEL_DEBUG. */
+  GULLoggerLevelDebug = 7,
+  /** Minimum log level. */
+  GULLoggerLevelMin = GULLoggerLevelError,
+  /** Maximum log level. */
+  GULLoggerLevelMax = GULLoggerLevelDebug
+} NS_SWIFT_NAME(GoogleLoggerLevel);
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/GULNSData+zlib.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/GULNSData+zlib.m
new file mode 100644
index 0000000..e441e36
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/GULNSData+zlib.m	
@@ -0,0 +1,207 @@
+// Copyright 2018 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/NSData+zlib/Public/GoogleUtilities/GULNSData+zlib.h"
+
+#import <zlib.h>
+
+#define kChunkSize 1024
+#define Z_DEFAULT_COMPRESSION (-1)
+
+NSString *const GULNSDataZlibErrorDomain = @"com.google.GULNSDataZlibErrorDomain";
+NSString *const GULNSDataZlibErrorKey = @"GULNSDataZlibErrorKey";
+NSString *const GULNSDataZlibRemainingBytesKey = @"GULNSDataZlibRemainingBytesKey";
+
+@implementation NSData (GULGzip)
+
++ (NSData *)gul_dataByInflatingGzippedData:(NSData *)data error:(NSError **)error {
+  const void *bytes = [data bytes];
+  NSUInteger length = [data length];
+  if (!bytes || !length) {
+    return nil;
+  }
+
+#if defined(__LP64__) && __LP64__
+  // Don't support > 32bit length for 64 bit, see note in header.
+  if (length > UINT_MAX) {
+    return nil;
+  }
+#endif
+
+  z_stream strm;
+  bzero(&strm, sizeof(z_stream));
+
+  // Setup the input.
+  strm.avail_in = (unsigned int)length;
+  strm.next_in = (unsigned char *)bytes;
+
+  int windowBits = 15;  // 15 to enable any window size
+  windowBits += 32;     // and +32 to enable zlib or gzip header detection.
+
+  int retCode;
+  if ((retCode = inflateInit2(&strm, windowBits)) != Z_OK) {
+    if (error) {
+      NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
+                                                           forKey:GULNSDataZlibErrorKey];
+      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                   code:GULNSDataZlibErrorInternal
+                               userInfo:userInfo];
+    }
+    return nil;
+  }
+
+  // Hint the size at 4x the input size.
+  NSMutableData *result = [NSMutableData dataWithCapacity:(length * 4)];
+  unsigned char output[kChunkSize];
+
+  // Loop to collect the data.
+  do {
+    // Update what we're passing in.
+    strm.avail_out = kChunkSize;
+    strm.next_out = output;
+    retCode = inflate(&strm, Z_NO_FLUSH);
+    if ((retCode != Z_OK) && (retCode != Z_STREAM_END)) {
+      if (error) {
+        NSMutableDictionary *userInfo =
+            [NSMutableDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
+                                               forKey:GULNSDataZlibErrorKey];
+        if (strm.msg) {
+          NSString *message = [NSString stringWithUTF8String:strm.msg];
+          if (message) {
+            [userInfo setObject:message forKey:NSLocalizedDescriptionKey];
+          }
+        }
+        *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                     code:GULNSDataZlibErrorInternal
+                                 userInfo:userInfo];
+      }
+      inflateEnd(&strm);
+      return nil;
+    }
+    // Collect what we got.
+    unsigned gotBack = kChunkSize - strm.avail_out;
+    if (gotBack > 0) {
+      [result appendBytes:output length:gotBack];
+    }
+
+  } while (retCode == Z_OK);
+
+  // Make sure there wasn't more data tacked onto the end of a valid compressed stream.
+  if (strm.avail_in != 0) {
+    if (error) {
+      NSDictionary *userInfo =
+          [NSDictionary dictionaryWithObject:[NSNumber numberWithUnsignedInt:strm.avail_in]
+                                      forKey:GULNSDataZlibRemainingBytesKey];
+      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                   code:GULNSDataZlibErrorDataRemaining
+                               userInfo:userInfo];
+    }
+    result = nil;
+  }
+  // The only way out of the loop was by hitting the end of the stream.
+  NSAssert(retCode == Z_STREAM_END,
+           @"Thought we finished inflate w/o getting a result of stream end, code %d", retCode);
+
+  // Clean up.
+  inflateEnd(&strm);
+
+  return result;
+}
+
++ (NSData *)gul_dataByGzippingData:(NSData *)data error:(NSError **)error {
+  const void *bytes = [data bytes];
+  NSUInteger length = [data length];
+
+  int level = Z_DEFAULT_COMPRESSION;
+  if (!bytes || !length) {
+    return nil;
+  }
+
+#if defined(__LP64__) && __LP64__
+  // Don't support > 32bit length for 64 bit, see note in header.
+  if (length > UINT_MAX) {
+    if (error) {
+      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                   code:GULNSDataZlibErrorGreaterThan32BitsToCompress
+                               userInfo:nil];
+    }
+    return nil;
+  }
+#endif
+
+  z_stream strm;
+  bzero(&strm, sizeof(z_stream));
+
+  int memLevel = 8;          // Default.
+  int windowBits = 15 + 16;  // Enable gzip header instead of zlib header.
+
+  int retCode;
+  if ((retCode = deflateInit2(&strm, level, Z_DEFLATED, windowBits, memLevel,
+                              Z_DEFAULT_STRATEGY)) != Z_OK) {
+    if (error) {
+      NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
+                                                           forKey:GULNSDataZlibErrorKey];
+      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                   code:GULNSDataZlibErrorInternal
+                               userInfo:userInfo];
+    }
+    return nil;
+  }
+
+  // Hint the size at 1/4 the input size.
+  NSMutableData *result = [NSMutableData dataWithCapacity:(length / 4)];
+  unsigned char output[kChunkSize];
+
+  // Setup the input.
+  strm.avail_in = (unsigned int)length;
+  strm.next_in = (unsigned char *)bytes;
+
+  // Collect the data.
+  do {
+    // update what we're passing in
+    strm.avail_out = kChunkSize;
+    strm.next_out = output;
+    retCode = deflate(&strm, Z_FINISH);
+    if ((retCode != Z_OK) && (retCode != Z_STREAM_END)) {
+      if (error) {
+        NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
+                                                             forKey:GULNSDataZlibErrorKey];
+        *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
+                                     code:GULNSDataZlibErrorInternal
+                                 userInfo:userInfo];
+      }
+      deflateEnd(&strm);
+      return nil;
+    }
+    // Collect what we got.
+    unsigned gotBack = kChunkSize - strm.avail_out;
+    if (gotBack > 0) {
+      [result appendBytes:output length:gotBack];
+    }
+
+  } while (retCode == Z_OK);
+
+  // If the loop exits, it used all input and the stream ended.
+  NSAssert(strm.avail_in == 0,
+           @"Should have finished deflating without using all input, %u bytes left", strm.avail_in);
+  NSAssert(retCode == Z_STREAM_END,
+           @"thought we finished deflate w/o getting a result of stream end, code %d", retCode);
+
+  // Clean up.
+  deflateEnd(&strm);
+
+  return result;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/Public/GoogleUtilities/GULNSData+zlib.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/Public/GoogleUtilities/GULNSData+zlib.h
new file mode 100644
index 0000000..36f94a7
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/NSData+zlib/Public/GoogleUtilities/GULNSData+zlib.h	
@@ -0,0 +1,49 @@
+// Copyright 2018 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+/// This is a copy of Google Toolbox for Mac library to avoid creating an extra framework.
+
+// NOTE: For 64bit, none of these apis handle input sizes >32bits, they will return nil when given
+// such data. To handle data of that size you really should be streaming it rather then doing it all
+// in memory.
+
+@interface NSData (GULGzip)
+
+/// Returns an data as the result of decompressing the payload of |data|.The data to decompress must
+/// be a gzipped payloads.
++ (NSData *)gul_dataByInflatingGzippedData:(NSData *)data error:(NSError **)error;
+
+/// Returns an compressed data with the result of gzipping the payload of |data|. Uses the default
+/// compression level.
++ (NSData *)gul_dataByGzippingData:(NSData *)data error:(NSError **)error;
+
+FOUNDATION_EXPORT NSString *const GULNSDataZlibErrorDomain;
+FOUNDATION_EXPORT NSString *const GULNSDataZlibErrorKey;           // NSNumber
+FOUNDATION_EXPORT NSString *const GULNSDataZlibRemainingBytesKey;  // NSNumber
+
+typedef NS_ENUM(NSInteger, GULNSDataZlibError) {
+  GULNSDataZlibErrorGreaterThan32BitsToCompress = 1024,
+  // An internal zlib error.
+  // GULNSDataZlibErrorKey will contain the error value.
+  // NSLocalizedDescriptionKey may contain an error string from zlib.
+  // Look in zlib.h for list of errors.
+  GULNSDataZlibErrorInternal,
+  // There was left over data in the buffer that was not used.
+  // GULNSDataZlibRemainingBytesKey will contain number of remaining bytes.
+  GULNSDataZlibErrorDataRemaining
+};
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULMutableDictionary.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULMutableDictionary.m
new file mode 100644
index 0000000..7726d15
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULMutableDictionary.m	
@@ -0,0 +1,101 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+
+@implementation GULMutableDictionary {
+  /// The mutable dictionary.
+  NSMutableDictionary *_objects;
+
+  /// Serial synchronization queue. All reads should use dispatch_sync, while writes use
+  /// dispatch_async.
+  dispatch_queue_t _queue;
+}
+
+- (instancetype)init {
+  self = [super init];
+
+  if (self) {
+    _objects = [[NSMutableDictionary alloc] init];
+    _queue = dispatch_queue_create("GULMutableDictionary", DISPATCH_QUEUE_SERIAL);
+  }
+
+  return self;
+}
+
+- (NSString *)description {
+  __block NSString *description;
+  dispatch_sync(_queue, ^{
+    description = self->_objects.description;
+  });
+  return description;
+}
+
+- (id)objectForKey:(id)key {
+  __block id object;
+  dispatch_sync(_queue, ^{
+    object = [self->_objects objectForKey:key];
+  });
+  return object;
+}
+
+- (void)setObject:(id)object forKey:(id<NSCopying>)key {
+  dispatch_async(_queue, ^{
+    [self->_objects setObject:object forKey:key];
+  });
+}
+
+- (void)removeObjectForKey:(id)key {
+  dispatch_async(_queue, ^{
+    [self->_objects removeObjectForKey:key];
+  });
+}
+
+- (void)removeAllObjects {
+  dispatch_async(_queue, ^{
+    [self->_objects removeAllObjects];
+  });
+}
+
+- (NSUInteger)count {
+  __block NSUInteger count;
+  dispatch_sync(_queue, ^{
+    count = self->_objects.count;
+  });
+  return count;
+}
+
+- (id)objectForKeyedSubscript:(id<NSCopying>)key {
+  __block id object;
+  dispatch_sync(_queue, ^{
+    object = self->_objects[key];
+  });
+  return object;
+}
+
+- (void)setObject:(id)obj forKeyedSubscript:(id<NSCopying>)key {
+  dispatch_async(_queue, ^{
+    self->_objects[key] = obj;
+  });
+}
+
+- (NSDictionary *)dictionary {
+  __block NSDictionary *dictionary;
+  dispatch_sync(_queue, ^{
+    dictionary = [self->_objects copy];
+  });
+  return dictionary;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetwork.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetwork.m
new file mode 100644
index 0000000..ca697a3
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetwork.m	
@@ -0,0 +1,390 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetwork.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkMessageCode.h"
+
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+#import "GoogleUtilities/NSData+zlib/Public/GoogleUtilities/GULNSData+zlib.h"
+#import "GoogleUtilities/Network/GULNetworkInternal.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h"
+#import "GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h"
+
+/// Constant string for request header Content-Encoding.
+static NSString *const kGULNetworkContentCompressionKey = @"Content-Encoding";
+
+/// Constant string for request header Content-Encoding value.
+static NSString *const kGULNetworkContentCompressionValue = @"gzip";
+
+/// Constant string for request header Content-Length.
+static NSString *const kGULNetworkContentLengthKey = @"Content-Length";
+
+/// Constant string for request header Content-Type.
+static NSString *const kGULNetworkContentTypeKey = @"Content-Type";
+
+/// Constant string for request header Content-Type value.
+static NSString *const kGULNetworkContentTypeValue = @"application/x-www-form-urlencoded";
+
+/// Constant string for GET request method.
+static NSString *const kGULNetworkGETRequestMethod = @"GET";
+
+/// Constant string for POST request method.
+static NSString *const kGULNetworkPOSTRequestMethod = @"POST";
+
+/// Default constant string as a prefix for network logger.
+static NSString *const kGULNetworkLogTag = @"Google/Utilities/Network";
+
+@interface GULNetwork () <GULReachabilityDelegate, GULNetworkLoggerDelegate>
+@end
+
+@implementation GULNetwork {
+  /// Network reachability.
+  GULReachabilityChecker *_reachability;
+
+  /// The dictionary of requests by session IDs { NSString : id }.
+  GULMutableDictionary *_requests;
+}
+
+- (instancetype)init {
+  return [self initWithReachabilityHost:kGULNetworkReachabilityHost];
+}
+
+- (instancetype)initWithReachabilityHost:(NSString *)reachabilityHost {
+  self = [super init];
+  if (self) {
+    // Setup reachability.
+    _reachability = [[GULReachabilityChecker alloc] initWithReachabilityDelegate:self
+                                                                        withHost:reachabilityHost];
+    if (![_reachability start]) {
+      return nil;
+    }
+
+    _requests = [[GULMutableDictionary alloc] init];
+    _timeoutInterval = kGULNetworkTimeOutInterval;
+  }
+  return self;
+}
+
+- (void)dealloc {
+  _reachability.reachabilityDelegate = nil;
+  [_reachability stop];
+}
+
+#pragma mark - External Methods
+
++ (void)handleEventsForBackgroundURLSessionID:(NSString *)sessionID
+                            completionHandler:(GULNetworkSystemCompletionHandler)completionHandler {
+  [GULNetworkURLSession handleEventsForBackgroundURLSessionID:sessionID
+                                            completionHandler:completionHandler];
+}
+
+- (NSString *)postURL:(NSURL *)url
+                   payload:(NSData *)payload
+                     queue:(dispatch_queue_t)queue
+    usingBackgroundSession:(BOOL)usingBackgroundSession
+         completionHandler:(GULNetworkCompletionHandler)handler {
+  if (!url.absoluteString.length) {
+    [self handleErrorWithCode:GULErrorCodeNetworkInvalidURL queue:queue withHandler:handler];
+    return nil;
+  }
+
+  NSTimeInterval timeOutInterval = _timeoutInterval ?: kGULNetworkTimeOutInterval;
+
+  NSMutableURLRequest *request =
+      [[NSMutableURLRequest alloc] initWithURL:url
+                                   cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
+                               timeoutInterval:timeOutInterval];
+
+  if (!request) {
+    [self handleErrorWithCode:GULErrorCodeNetworkSessionTaskCreation
+                        queue:queue
+                  withHandler:handler];
+    return nil;
+  }
+
+  NSError *compressError = nil;
+  NSData *compressedData = [NSData gul_dataByGzippingData:payload error:&compressError];
+  if (!compressedData || compressError) {
+    if (compressError || payload.length > 0) {
+      // If the payload is not empty but it fails to compress the payload, something has been wrong.
+      [self handleErrorWithCode:GULErrorCodeNetworkPayloadCompression
+                          queue:queue
+                    withHandler:handler];
+      return nil;
+    }
+    compressedData = [[NSData alloc] init];
+  }
+
+  NSString *postLength = @(compressedData.length).stringValue;
+
+  // Set up the request with the compressed data.
+  [request setValue:postLength forHTTPHeaderField:kGULNetworkContentLengthKey];
+  request.HTTPBody = compressedData;
+  request.HTTPMethod = kGULNetworkPOSTRequestMethod;
+  [request setValue:kGULNetworkContentTypeValue forHTTPHeaderField:kGULNetworkContentTypeKey];
+  [request setValue:kGULNetworkContentCompressionValue
+      forHTTPHeaderField:kGULNetworkContentCompressionKey];
+
+  GULNetworkURLSession *fetcher = [[GULNetworkURLSession alloc] initWithNetworkLoggerDelegate:self];
+  fetcher.backgroundNetworkEnabled = usingBackgroundSession;
+
+  __weak GULNetwork *weakSelf = self;
+  NSString *requestID = [fetcher
+      sessionIDFromAsyncPOSTRequest:request
+                  completionHandler:^(NSHTTPURLResponse *response, NSData *data,
+                                      NSString *sessionID, NSError *error) {
+                    GULNetwork *strongSelf = weakSelf;
+                    if (!strongSelf) {
+                      return;
+                    }
+                    dispatch_queue_t queueToDispatch = queue ? queue : dispatch_get_main_queue();
+                    dispatch_async(queueToDispatch, ^{
+                      if (sessionID.length) {
+                        [strongSelf->_requests removeObjectForKey:sessionID];
+                      }
+                      if (handler) {
+                        handler(response, data, error);
+                      }
+                    });
+                  }];
+  if (!requestID) {
+    [self handleErrorWithCode:GULErrorCodeNetworkSessionTaskCreation
+                        queue:queue
+                  withHandler:handler];
+    return nil;
+  }
+
+  [self GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                    messageCode:kGULNetworkMessageCodeNetwork000
+                        message:@"Uploading data. Host"
+                        context:url];
+  _requests[requestID] = fetcher;
+  return requestID;
+}
+
+- (NSString *)getURL:(NSURL *)url
+                   headers:(NSDictionary *)headers
+                     queue:(dispatch_queue_t)queue
+    usingBackgroundSession:(BOOL)usingBackgroundSession
+         completionHandler:(GULNetworkCompletionHandler)handler {
+  if (!url.absoluteString.length) {
+    [self handleErrorWithCode:GULErrorCodeNetworkInvalidURL queue:queue withHandler:handler];
+    return nil;
+  }
+
+  NSTimeInterval timeOutInterval = _timeoutInterval ?: kGULNetworkTimeOutInterval;
+  NSMutableURLRequest *request =
+      [[NSMutableURLRequest alloc] initWithURL:url
+                                   cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
+                               timeoutInterval:timeOutInterval];
+
+  if (!request) {
+    [self handleErrorWithCode:GULErrorCodeNetworkSessionTaskCreation
+                        queue:queue
+                  withHandler:handler];
+    return nil;
+  }
+
+  request.HTTPMethod = kGULNetworkGETRequestMethod;
+  request.allHTTPHeaderFields = headers;
+
+  GULNetworkURLSession *fetcher = [[GULNetworkURLSession alloc] initWithNetworkLoggerDelegate:self];
+  fetcher.backgroundNetworkEnabled = usingBackgroundSession;
+
+  __weak GULNetwork *weakSelf = self;
+  NSString *requestID = [fetcher
+      sessionIDFromAsyncGETRequest:request
+                 completionHandler:^(NSHTTPURLResponse *response, NSData *data, NSString *sessionID,
+                                     NSError *error) {
+                   GULNetwork *strongSelf = weakSelf;
+                   if (!strongSelf) {
+                     return;
+                   }
+                   dispatch_queue_t queueToDispatch = queue ? queue : dispatch_get_main_queue();
+                   dispatch_async(queueToDispatch, ^{
+                     if (sessionID.length) {
+                       [strongSelf->_requests removeObjectForKey:sessionID];
+                     }
+                     if (handler) {
+                       handler(response, data, error);
+                     }
+                   });
+                 }];
+
+  if (!requestID) {
+    [self handleErrorWithCode:GULErrorCodeNetworkSessionTaskCreation
+                        queue:queue
+                  withHandler:handler];
+    return nil;
+  }
+
+  [self GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                    messageCode:kGULNetworkMessageCodeNetwork001
+                        message:@"Downloading data. Host"
+                        context:url];
+  _requests[requestID] = fetcher;
+  return requestID;
+}
+
+- (BOOL)hasUploadInProgress {
+  return _requests.count > 0;
+}
+
+#pragma mark - Network Reachability
+
+/// Tells reachability delegate to call reachabilityDidChangeToStatus: to notify the network
+/// reachability has changed.
+- (void)reachability:(GULReachabilityChecker *)reachability
+       statusChanged:(GULReachabilityStatus)status {
+  _networkConnected = (status == kGULReachabilityViaCellular || status == kGULReachabilityViaWifi);
+  [_reachabilityDelegate reachabilityDidChange];
+}
+
+#pragma mark - Network logger delegate
+
+- (void)setLoggerDelegate:(id<GULNetworkLoggerDelegate>)loggerDelegate {
+  // Explicitly check whether the delegate responds to the methods because conformsToProtocol does
+  // not work correctly even though the delegate does respond to the methods.
+  if (!loggerDelegate ||
+      ![loggerDelegate respondsToSelector:@selector(GULNetwork_logWithLevel:
+                                                                messageCode:message:contexts:)] ||
+      ![loggerDelegate respondsToSelector:@selector(GULNetwork_logWithLevel:
+                                                                messageCode:message:context:)] ||
+      ![loggerDelegate respondsToSelector:@selector(GULNetwork_logWithLevel:
+                                                                messageCode:message:)]) {
+    GULLogError(kGULLoggerNetwork, NO,
+                [NSString stringWithFormat:@"I-NET%06ld", (long)kGULNetworkMessageCodeNetwork002],
+                @"Cannot set the network logger delegate: delegate does not conform to the network "
+                 "logger protocol.");
+    return;
+  }
+  _loggerDelegate = loggerDelegate;
+}
+
+#pragma mark - Private methods
+
+/// Handles network error and calls completion handler with the error.
+- (void)handleErrorWithCode:(NSInteger)code
+                      queue:(dispatch_queue_t)queue
+                withHandler:(GULNetworkCompletionHandler)handler {
+  NSDictionary *userInfo = @{kGULNetworkErrorContext : @"Failed to create network request"};
+  NSError *error = [[NSError alloc] initWithDomain:kGULNetworkErrorDomain
+                                              code:code
+                                          userInfo:userInfo];
+  [self GULNetwork_logWithLevel:kGULNetworkLogLevelWarning
+                    messageCode:kGULNetworkMessageCodeNetwork002
+                        message:@"Failed to create network request. Code, error"
+                       contexts:@[ @(code), error ]];
+  if (handler) {
+    dispatch_queue_t queueToDispatch = queue ? queue : dispatch_get_main_queue();
+    dispatch_async(queueToDispatch, ^{
+      handler(nil, nil, error);
+    });
+  }
+}
+
+#pragma mark - Network logger
+
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message
+                       contexts:(NSArray *)contexts {
+  // Let the delegate log the message if there is a valid logger delegate. Otherwise, just log
+  // errors/warnings/info messages to the console log.
+  if (_loggerDelegate) {
+    [_loggerDelegate GULNetwork_logWithLevel:logLevel
+                                 messageCode:messageCode
+                                     message:message
+                                    contexts:contexts];
+    return;
+  }
+  if (_isDebugModeEnabled || logLevel == kGULNetworkLogLevelError ||
+      logLevel == kGULNetworkLogLevelWarning || logLevel == kGULNetworkLogLevelInfo) {
+    NSString *formattedMessage = GULStringWithLogMessage(message, logLevel, contexts);
+    NSLog(@"%@", formattedMessage);
+    GULLogBasic((GULLoggerLevel)logLevel, kGULLoggerNetwork, NO,
+                [NSString stringWithFormat:@"I-NET%06ld", (long)messageCode], formattedMessage,
+                NULL);
+  }
+}
+
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message
+                        context:(id)context {
+  if (_loggerDelegate) {
+    [_loggerDelegate GULNetwork_logWithLevel:logLevel
+                                 messageCode:messageCode
+                                     message:message
+                                     context:context];
+    return;
+  }
+  NSArray *contexts = context ? @[ context ] : @[];
+  [self GULNetwork_logWithLevel:logLevel messageCode:messageCode message:message contexts:contexts];
+}
+
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message {
+  if (_loggerDelegate) {
+    [_loggerDelegate GULNetwork_logWithLevel:logLevel messageCode:messageCode message:message];
+    return;
+  }
+  [self GULNetwork_logWithLevel:logLevel messageCode:messageCode message:message contexts:@[]];
+}
+
+/// Returns a string for the given log level (e.g. kGULNetworkLogLevelError -> @"ERROR").
+static NSString *GULLogLevelDescriptionFromLogLevel(GULNetworkLogLevel logLevel) {
+  static NSDictionary *levelNames = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    levelNames = @{
+      @(kGULNetworkLogLevelError) : @"ERROR",
+      @(kGULNetworkLogLevelWarning) : @"WARNING",
+      @(kGULNetworkLogLevelInfo) : @"INFO",
+      @(kGULNetworkLogLevelDebug) : @"DEBUG"
+    };
+  });
+  return levelNames[@(logLevel)];
+}
+
+/// Returns a formatted string to be used for console logging.
+static NSString *GULStringWithLogMessage(NSString *message,
+                                         GULNetworkLogLevel logLevel,
+                                         NSArray *contexts) {
+  if (!message) {
+    message = @"(Message was nil)";
+  } else if (!message.length) {
+    message = @"(Message was empty)";
+  }
+  NSMutableString *result = [[NSMutableString alloc]
+      initWithFormat:@"<%@/%@> %@", kGULNetworkLogTag, GULLogLevelDescriptionFromLogLevel(logLevel),
+                     message];
+
+  if (!contexts.count) {
+    return result;
+  }
+
+  NSMutableArray *formattedContexts = [[NSMutableArray alloc] init];
+  for (id item in contexts) {
+    [formattedContexts addObject:(item != [NSNull null] ? item : @"(nil)")];
+  }
+
+  [result appendString:@": "];
+  [result appendString:[formattedContexts componentsJoinedByString:@", "]];
+  return result;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkConstants.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkConstants.m
new file mode 100644
index 0000000..e4b8469
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkConstants.m	
@@ -0,0 +1,41 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h"
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+
+#import <Foundation/Foundation.h>
+
+NSString *const kGULNetworkBackgroundSessionConfigIDPrefix = @"com.gul.network.background-upload";
+NSString *const kGULNetworkApplicationSupportSubdirectory = @"GUL/Network";
+NSString *const kGULNetworkTempDirectoryName = @"GULNetworkTemporaryDirectory";
+const NSTimeInterval kGULNetworkTempFolderExpireTime = 60 * 60;  // 1 hour
+const NSTimeInterval kGULNetworkTimeOutInterval = 60;            // 1 minute.
+NSString *const kGULNetworkReachabilityHost = @"app-measurement.com";
+NSString *const kGULNetworkErrorContext = @"Context";
+
+const int kGULNetworkHTTPStatusOK = 200;
+const int kGULNetworkHTTPStatusNoContent = 204;
+const int kGULNetworkHTTPStatusCodeMultipleChoices = 300;
+const int kGULNetworkHTTPStatusCodeMovedPermanently = 301;
+const int kGULNetworkHTTPStatusCodeFound = 302;
+const int kGULNetworkHTTPStatusCodeNotModified = 304;
+const int kGULNetworkHTTPStatusCodeMovedTemporarily = 307;
+const int kGULNetworkHTTPStatusCodeNotFound = 404;
+const int kGULNetworkHTTPStatusCodeCannotAcceptTraffic = 429;
+const int kGULNetworkHTTPStatusCodeUnavailable = 503;
+
+NSString *const kGULNetworkErrorDomain = @"com.gul.network.ErrorDomain";
+
+GULLoggerService kGULLoggerNetwork = @"[GULNetwork]";
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkInternal.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkInternal.h
new file mode 100644
index 0000000..5aca9fd
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkInternal.h	
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+
+extern NSString *const kGULNetworkErrorDomain;
+
+/// The logger service for GULNetwork.
+extern GULLoggerService kGULLoggerNetwork;
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkURLSession.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkURLSession.m
new file mode 100644
index 0000000..f78bdc1
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/GULNetworkURLSession.m	
@@ -0,0 +1,766 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkURLSession.h"
+
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+#import "GoogleUtilities/Network/GULNetworkInternal.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h"
+#import "GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkMessageCode.h"
+
+@interface GULNetworkURLSession () <NSURLSessionDelegate,
+                                    NSURLSessionDataDelegate,
+                                    NSURLSessionDownloadDelegate,
+                                    NSURLSessionTaskDelegate>
+@end
+
+@implementation GULNetworkURLSession {
+  /// The handler to be called when the request completes or error has occurs.
+  GULNetworkURLSessionCompletionHandler _completionHandler;
+
+  /// Session ID generated randomly with a fixed prefix.
+  NSString *_sessionID;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
+  /// The session configuration. NSURLSessionConfiguration' is only available on iOS 7.0 or newer.
+  NSURLSessionConfiguration *_sessionConfig;
+
+  /// The current NSURLSession.
+  NSURLSession *__weak _Nullable _URLSession;
+#pragma clang diagnostic pop
+
+  /// The path to the directory where all temporary files are stored before uploading.
+  NSURL *_networkDirectoryURL;
+
+  /// The downloaded data from fetching.
+  NSData *_downloadedData;
+
+  /// The path to the temporary file which stores the uploading data.
+  NSURL *_uploadingFileURL;
+
+  /// The current request.
+  NSURLRequest *_request;
+}
+
+#pragma mark - Init
+
+- (instancetype)initWithNetworkLoggerDelegate:(id<GULNetworkLoggerDelegate>)networkLoggerDelegate {
+  self = [super init];
+  if (self) {
+    // Create URL to the directory where all temporary files to upload have to be stored.
+#if TARGET_OS_TV
+    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
+#else
+    NSArray *paths =
+        NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES);
+#endif
+    NSString *storageDirectory = paths.firstObject;
+    NSArray *tempPathComponents = @[
+      storageDirectory, kGULNetworkApplicationSupportSubdirectory, kGULNetworkTempDirectoryName
+    ];
+    _networkDirectoryURL = [NSURL fileURLWithPathComponents:tempPathComponents];
+    _sessionID = [NSString stringWithFormat:@"%@-%@", kGULNetworkBackgroundSessionConfigIDPrefix,
+                                            [[NSUUID UUID] UUIDString]];
+    _loggerDelegate = networkLoggerDelegate;
+  }
+  return self;
+}
+
+#pragma mark - External Methods
+
+#pragma mark - To be called from AppDelegate
+
++ (void)handleEventsForBackgroundURLSessionID:(NSString *)sessionID
+                            completionHandler:
+                                (GULNetworkSystemCompletionHandler)systemCompletionHandler {
+  // The session may not be Analytics background. Ignore those that do not have the prefix.
+  if (![sessionID hasPrefix:kGULNetworkBackgroundSessionConfigIDPrefix]) {
+    return;
+  }
+  GULNetworkURLSession *fetcher = [self fetcherWithSessionIdentifier:sessionID];
+  if (fetcher != nil) {
+    [fetcher addSystemCompletionHandler:systemCompletionHandler forSession:sessionID];
+  } else {
+    GULLogError(kGULLoggerNetwork, NO,
+                [NSString stringWithFormat:@"I-NET%06ld", (long)kGULNetworkMessageCodeNetwork003],
+                @"Failed to retrieve background session with ID %@ after app is relaunched.",
+                sessionID);
+  }
+}
+
+#pragma mark - External Methods
+
+/// Sends an async POST request using NSURLSession for iOS >= 7.0, and returns an ID of the
+/// connection.
+- (nullable NSString *)sessionIDFromAsyncPOSTRequest:(NSURLRequest *)request
+                                   completionHandler:(GULNetworkURLSessionCompletionHandler)handler
+    API_AVAILABLE(ios(7.0)) {
+  // NSURLSessionUploadTask does not work with NSData in the background.
+  // To avoid this issue, write the data to a temporary file to upload it.
+  // Make a temporary file with the data subset.
+  _uploadingFileURL = [self temporaryFilePathWithSessionID:_sessionID];
+  NSError *writeError;
+  NSURLSessionUploadTask *postRequestTask;
+  NSURLSession *session;
+  BOOL didWriteFile = NO;
+
+  // Clean up the entire temp folder to avoid temp files that remain in case the previous session
+  // crashed and did not clean up.
+  [self maybeRemoveTempFilesAtURL:_networkDirectoryURL
+                     expiringTime:kGULNetworkTempFolderExpireTime];
+
+  // If there is no background network enabled, no need to write to file. This will allow default
+  // network session which runs on the foreground.
+  if (_backgroundNetworkEnabled && [self ensureTemporaryDirectoryExists]) {
+    didWriteFile = [request.HTTPBody writeToFile:_uploadingFileURL.path
+                                         options:NSDataWritingAtomic
+                                           error:&writeError];
+
+    if (writeError) {
+      [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                   messageCode:kGULNetworkMessageCodeURLSession000
+                                       message:@"Failed to write request data to file"
+                                       context:writeError];
+    }
+  }
+
+  if (didWriteFile) {
+    // Exclude this file from backing up to iTunes. There are conflicting reports that excluding
+    // directory from backing up does not exclude files of that directory from backing up.
+    [self excludeFromBackupForURL:_uploadingFileURL];
+
+    _sessionConfig = [self backgroundSessionConfigWithSessionID:_sessionID];
+    [self populateSessionConfig:_sessionConfig withRequest:request];
+    session = [NSURLSession sessionWithConfiguration:_sessionConfig
+                                            delegate:self
+                                       delegateQueue:[NSOperationQueue mainQueue]];
+    postRequestTask = [session uploadTaskWithRequest:request fromFile:_uploadingFileURL];
+  } else {
+    // If we cannot write to file, just send it in the foreground.
+    _sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
+    [self populateSessionConfig:_sessionConfig withRequest:request];
+    session = [NSURLSession sessionWithConfiguration:_sessionConfig
+                                            delegate:self
+                                       delegateQueue:[NSOperationQueue mainQueue]];
+    postRequestTask = [session uploadTaskWithRequest:request fromData:request.HTTPBody];
+  }
+
+  if (!session || !postRequestTask) {
+    NSError *error = [[NSError alloc]
+        initWithDomain:kGULNetworkErrorDomain
+                  code:GULErrorCodeNetworkRequestCreation
+              userInfo:@{kGULNetworkErrorContext : @"Cannot create network session"}];
+    [self callCompletionHandler:handler withResponse:nil data:nil error:error];
+    return nil;
+  }
+
+  _URLSession = session;
+
+  // Save the session into memory.
+  [[self class] setSessionInFetcherMap:self forSessionID:_sessionID];
+
+  _request = [request copy];
+
+  // Store completion handler because background session does not accept handler block but custom
+  // delegate.
+  _completionHandler = [handler copy];
+  [postRequestTask resume];
+
+  return _sessionID;
+}
+
+/// Sends an async GET request using NSURLSession for iOS >= 7.0, and returns an ID of the session.
+- (nullable NSString *)sessionIDFromAsyncGETRequest:(NSURLRequest *)request
+                                  completionHandler:(GULNetworkURLSessionCompletionHandler)handler
+    API_AVAILABLE(ios(7.0)) {
+  if (_backgroundNetworkEnabled) {
+    _sessionConfig = [self backgroundSessionConfigWithSessionID:_sessionID];
+  } else {
+    _sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
+  }
+
+  [self populateSessionConfig:_sessionConfig withRequest:request];
+
+  // Do not cache the GET request.
+  _sessionConfig.URLCache = nil;
+
+  NSURLSession *session = [NSURLSession sessionWithConfiguration:_sessionConfig
+                                                        delegate:self
+                                                   delegateQueue:[NSOperationQueue mainQueue]];
+  NSURLSessionDownloadTask *downloadTask = [session downloadTaskWithRequest:request];
+
+  if (!session || !downloadTask) {
+    NSError *error = [[NSError alloc]
+        initWithDomain:kGULNetworkErrorDomain
+                  code:GULErrorCodeNetworkRequestCreation
+              userInfo:@{kGULNetworkErrorContext : @"Cannot create network session"}];
+    [self callCompletionHandler:handler withResponse:nil data:nil error:error];
+    return nil;
+  }
+
+  _URLSession = session;
+
+  // Save the session into memory.
+  [[self class] setSessionInFetcherMap:self forSessionID:_sessionID];
+
+  _request = [request copy];
+
+  _completionHandler = [handler copy];
+  [downloadTask resume];
+
+  return _sessionID;
+}
+
+#pragma mark - NSURLSessionDataDelegate
+
+/// Called by the NSURLSession when the data task has received some of the expected data.
+/// Once the session is completed, URLSession:task:didCompleteWithError will be called and the
+/// completion handler will be called with the downloaded data.
+- (void)URLSession:(NSURLSession *)session
+          dataTask:(NSURLSessionDataTask *)dataTask
+    didReceiveData:(NSData *)data {
+  @synchronized(self) {
+    NSMutableData *mutableData = [[NSMutableData alloc] init];
+    if (_downloadedData) {
+      mutableData = _downloadedData.mutableCopy;
+    }
+    [mutableData appendData:data];
+    _downloadedData = mutableData;
+  }
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+/// Called by the NSURLSession once the download task is completed. The file is saved in the
+/// provided URL so we need to read the data and store into _downloadedData. Once the session is
+/// completed, URLSession:task:didCompleteWithError will be called and the completion handler will
+/// be called with the downloaded data.
+- (void)URLSession:(NSURLSession *)session
+                 downloadTask:(NSURLSessionDownloadTask *)task
+    didFinishDownloadingToURL:(NSURL *)url API_AVAILABLE(ios(7.0)) {
+  if (!url.path) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                    messageCode:kGULNetworkMessageCodeURLSession001
+                        message:@"Unable to read downloaded data from empty temp path"];
+    _downloadedData = nil;
+    return;
+  }
+
+  NSError *error;
+  _downloadedData = [NSData dataWithContentsOfFile:url.path options:0 error:&error];
+
+  if (error) {
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                 messageCode:kGULNetworkMessageCodeURLSession002
+                                     message:@"Cannot read the content of downloaded data"
+                                     context:error];
+    _downloadedData = nil;
+  }
+}
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+- (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session
+    API_AVAILABLE(ios(7.0)) {
+  [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                               messageCode:kGULNetworkMessageCodeURLSession003
+                                   message:@"Background session finished"
+                                   context:session.configuration.identifier];
+  [self callSystemCompletionHandler:session.configuration.identifier];
+}
+#endif
+
+- (void)URLSession:(NSURLSession *)session
+                    task:(NSURLSessionTask *)task
+    didCompleteWithError:(NSError *)error API_AVAILABLE(ios(7.0)) {
+  // Avoid any chance of recursive behavior leading to it being used repeatedly.
+  GULNetworkURLSessionCompletionHandler handler = _completionHandler;
+  _completionHandler = nil;
+
+  if (task.response) {
+    // The following assertion should always be true for HTTP requests, see https://goo.gl/gVLxT7.
+    NSAssert([task.response isKindOfClass:[NSHTTPURLResponse class]], @"URL response must be HTTP");
+
+    // The server responded so ignore the error created by the system.
+    error = nil;
+  } else if (!error) {
+    error = [[NSError alloc]
+        initWithDomain:kGULNetworkErrorDomain
+                  code:GULErrorCodeNetworkInvalidResponse
+              userInfo:@{kGULNetworkErrorContext : @"Network Error: Empty network response"}];
+  }
+
+  [self callCompletionHandler:handler
+                 withResponse:(NSHTTPURLResponse *)task.response
+                         data:_downloadedData
+                        error:error];
+
+  // Remove the temp file to avoid trashing devices with lots of temp files.
+  [self removeTempItemAtURL:_uploadingFileURL];
+
+  // Try to clean up stale files again.
+  [self maybeRemoveTempFilesAtURL:_networkDirectoryURL
+                     expiringTime:kGULNetworkTempFolderExpireTime];
+
+  // This is called without checking the sessionID here since non-background sessions
+  // won't have an ID.
+  [session finishTasksAndInvalidate];
+
+  // Explicitly remove the session so it won't be reused. The weak map table should
+  // remove the session on deallocation, but dealloc may not happen immediately after
+  // calling `finishTasksAndInvalidate`.
+  NSString *sessionID = session.configuration.identifier;
+  [[self class] setSessionInFetcherMap:nil forSessionID:sessionID];
+}
+
+- (void)URLSession:(NSURLSession *)session
+                   task:(NSURLSessionTask *)task
+    didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+      completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition,
+                                  NSURLCredential *credential))completionHandler
+    API_AVAILABLE(ios(7.0)) {
+  // The handling is modeled after GTMSessionFetcher.
+  if ([challenge.protectionSpace.authenticationMethod
+          isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+    SecTrustRef serverTrust = challenge.protectionSpace.serverTrust;
+    if (serverTrust == NULL) {
+      [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                                   messageCode:kGULNetworkMessageCodeURLSession004
+                                       message:@"Received empty server trust for host. Host"
+                                       context:_request.URL];
+      completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+      return;
+    }
+    NSURLCredential *credential = [NSURLCredential credentialForTrust:serverTrust];
+    if (!credential) {
+      [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelWarning
+                                   messageCode:kGULNetworkMessageCodeURLSession005
+                                       message:@"Unable to verify server identity. Host"
+                                       context:_request.URL];
+      completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
+      return;
+    }
+
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                                 messageCode:kGULNetworkMessageCodeURLSession006
+                                     message:@"Received SSL challenge for host. Host"
+                                     context:_request.URL];
+
+    void (^callback)(BOOL) = ^(BOOL allow) {
+      if (allow) {
+        completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
+      } else {
+        [self->_loggerDelegate
+            GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                        messageCode:kGULNetworkMessageCodeURLSession007
+                            message:@"Cancelling authentication challenge for host. Host"
+                            context:self->_request.URL];
+        completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
+      }
+    };
+
+    // Retain the trust object to avoid a SecTrustEvaluate() crash on iOS 7.
+    CFRetain(serverTrust);
+
+    // Evaluate the certificate chain.
+    //
+    // The delegate queue may be the main thread. Trust evaluation could cause some
+    // blocking network activity, so we must evaluate async, as documented at
+    // https://developer.apple.com/library/ios/technotes/tn2232/
+    dispatch_queue_t evaluateBackgroundQueue =
+        dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+
+    dispatch_async(evaluateBackgroundQueue, ^{
+      SecTrustResultType trustEval = kSecTrustResultInvalid;
+      BOOL shouldAllow;
+      OSStatus trustError;
+
+      @synchronized([GULNetworkURLSession class]) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+        trustError = SecTrustEvaluate(serverTrust, &trustEval);
+#pragma clang dianostic pop
+      }
+
+      if (trustError != errSecSuccess) {
+        [self->_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                           messageCode:kGULNetworkMessageCodeURLSession008
+                                               message:@"Cannot evaluate server trust. Error, host"
+                                              contexts:@[ @(trustError), self->_request.URL ]];
+        shouldAllow = NO;
+      } else {
+        // Having a trust level "unspecified" by the user is the usual result, described at
+        // https://developer.apple.com/library/mac/qa/qa1360
+        shouldAllow =
+            (trustEval == kSecTrustResultUnspecified || trustEval == kSecTrustResultProceed);
+      }
+
+      // Call the call back with the permission.
+      callback(shouldAllow);
+
+      CFRelease(serverTrust);
+    });
+    return;
+  }
+
+  // Default handling for other Auth Challenges.
+  completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
+}
+
+#pragma mark - Internal Methods
+
+/// Stores system completion handler with session ID as key.
+- (void)addSystemCompletionHandler:(GULNetworkSystemCompletionHandler)handler
+                        forSession:(NSString *)identifier {
+  if (!handler) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                    messageCode:kGULNetworkMessageCodeURLSession009
+                        message:@"Cannot store nil system completion handler in network"];
+    return;
+  }
+
+  if (!identifier.length) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                    messageCode:kGULNetworkMessageCodeURLSession010
+                        message:@"Cannot store system completion handler with empty network "
+                                 "session identifier"];
+    return;
+  }
+
+  GULMutableDictionary *systemCompletionHandlers =
+      [[self class] sessionIDToSystemCompletionHandlerDictionary];
+  if (systemCompletionHandlers[identifier]) {
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelWarning
+                                 messageCode:kGULNetworkMessageCodeURLSession011
+                                     message:@"Got multiple system handlers for a single session ID"
+                                     context:identifier];
+  }
+
+  systemCompletionHandlers[identifier] = handler;
+}
+
+/// Calls the system provided completion handler with the session ID stored in the dictionary.
+/// The handler will be removed from the dictionary after being called.
+- (void)callSystemCompletionHandler:(NSString *)identifier {
+  GULMutableDictionary *systemCompletionHandlers =
+      [[self class] sessionIDToSystemCompletionHandlerDictionary];
+  GULNetworkSystemCompletionHandler handler = [systemCompletionHandlers objectForKey:identifier];
+
+  if (handler) {
+    [systemCompletionHandlers removeObjectForKey:identifier];
+
+    dispatch_async(dispatch_get_main_queue(), ^{
+      handler();
+    });
+  }
+}
+
+/// Sets or updates the session ID of this session.
+- (void)setSessionID:(NSString *)sessionID {
+  _sessionID = [sessionID copy];
+}
+
+/// Creates a background session configuration with the session ID using the supported method.
+- (NSURLSessionConfiguration *)backgroundSessionConfigWithSessionID:(NSString *)sessionID
+    API_AVAILABLE(ios(7.0)) {
+#if (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&         \
+     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_10) || \
+    TARGET_OS_TV ||                                              \
+    (TARGET_OS_IOS && defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_8_0)
+
+  // iOS 8/10.10 builds require the new backgroundSessionConfiguration method name.
+  return [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:sessionID];
+
+#elif (TARGET_OS_OSX && defined(MAC_OS_X_VERSION_10_10) &&        \
+       MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10) || \
+    (TARGET_OS_IOS && defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0)
+
+  // Do a runtime check to avoid a deprecation warning about using
+  // +backgroundSessionConfiguration: on iOS 8.
+  if ([NSURLSessionConfiguration
+          respondsToSelector:@selector(backgroundSessionConfigurationWithIdentifier:)]) {
+    // Running on iOS 8+/OS X 10.10+.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
+    return [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:sessionID];
+#pragma clang diagnostic pop
+  } else {
+    // Running on iOS 7/OS X 10.9.
+    return [NSURLSessionConfiguration backgroundSessionConfiguration:sessionID];
+  }
+
+#else
+  // Building with an SDK earlier than iOS 8/OS X 10.10.
+  return [NSURLSessionConfiguration backgroundSessionConfiguration:sessionID];
+#endif
+}
+
+- (void)maybeRemoveTempFilesAtURL:(NSURL *)folderURL expiringTime:(NSTimeInterval)staleTime {
+  if (!folderURL.absoluteString.length) {
+    return;
+  }
+
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+  NSError *error = nil;
+
+  NSArray *properties = @[ NSURLCreationDateKey ];
+  NSArray *directoryContent =
+      [fileManager contentsOfDirectoryAtURL:folderURL
+                 includingPropertiesForKeys:properties
+                                    options:NSDirectoryEnumerationSkipsSubdirectoryDescendants
+                                      error:&error];
+  if (error && error.code != NSFileReadNoSuchFileError) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelDebug
+                    messageCode:kGULNetworkMessageCodeURLSession012
+                        message:@"Cannot get files from the temporary network folder. Error"
+                        context:error];
+    return;
+  }
+
+  if (!directoryContent.count) {
+    return;
+  }
+
+  NSTimeInterval now = [NSDate date].timeIntervalSince1970;
+  for (NSURL *tempFile in directoryContent) {
+    NSDate *creationDate;
+    BOOL getCreationDate = [tempFile getResourceValue:&creationDate
+                                               forKey:NSURLCreationDateKey
+                                                error:NULL];
+    if (!getCreationDate) {
+      continue;
+    }
+    NSTimeInterval creationTimeInterval = creationDate.timeIntervalSince1970;
+    if (fabs(now - creationTimeInterval) > staleTime) {
+      [self removeTempItemAtURL:tempFile];
+    }
+  }
+}
+
+/// Removes the temporary file written to disk for sending the request. It has to be cleaned up
+/// after the session is done.
+- (void)removeTempItemAtURL:(NSURL *)fileURL {
+  if (!fileURL.absoluteString.length) {
+    return;
+  }
+
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+  NSError *error = nil;
+
+  if (![fileManager removeItemAtURL:fileURL error:&error] && error.code != NSFileNoSuchFileError) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                    messageCode:kGULNetworkMessageCodeURLSession013
+                        message:@"Failed to remove temporary uploading data file. Error"
+                        context:error.localizedDescription];
+  }
+}
+
+/// Gets the fetcher with the session ID.
++ (instancetype)fetcherWithSessionIdentifier:(NSString *)sessionIdentifier {
+  GULNetworkURLSession *session = [self sessionFromFetcherMapForSessionID:sessionIdentifier];
+  if (!session && [sessionIdentifier hasPrefix:kGULNetworkBackgroundSessionConfigIDPrefix]) {
+    session = [[GULNetworkURLSession alloc] initWithNetworkLoggerDelegate:nil];
+    [session setSessionID:sessionIdentifier];
+    [self setSessionInFetcherMap:session forSessionID:sessionIdentifier];
+  }
+  return session;
+}
+
+/// Returns a map of the fetcher by session ID. Creates a map if it is not created.
+/// When reading and writing from/to the session map, don't use this method directly.
+/// To avoid thread safety issues, use one of the helper methods at the bottom of the
+/// file: setSessionInFetcherMap:forSessionID:, sessionFromFetcherMapForSessionID:
++ (NSMapTable<NSString *, GULNetworkURLSession *> *)sessionIDToFetcherMap {
+  static NSMapTable *sessionIDToFetcherMap;
+
+  static dispatch_once_t sessionMapOnceToken;
+  dispatch_once(&sessionMapOnceToken, ^{
+    sessionIDToFetcherMap = [NSMapTable strongToWeakObjectsMapTable];
+  });
+  return sessionIDToFetcherMap;
+}
+
++ (NSLock *)sessionIDToFetcherMapReadWriteLock {
+  static NSLock *lock;
+
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    lock = [[NSLock alloc] init];
+  });
+  return lock;
+}
+
+/// Returns a map of system provided completion handler by session ID. Creates a map if it is not
+/// created.
++ (GULMutableDictionary *)sessionIDToSystemCompletionHandlerDictionary {
+  static GULMutableDictionary *systemCompletionHandlers;
+
+  static dispatch_once_t systemCompletionHandlerOnceToken;
+  dispatch_once(&systemCompletionHandlerOnceToken, ^{
+    systemCompletionHandlers = [[GULMutableDictionary alloc] init];
+  });
+  return systemCompletionHandlers;
+}
+
+- (NSURL *)temporaryFilePathWithSessionID:(NSString *)sessionID {
+  NSString *tempName = [NSString stringWithFormat:@"GULUpload_temp_%@", sessionID];
+  return [_networkDirectoryURL URLByAppendingPathComponent:tempName];
+}
+
+/// Makes sure that the directory to store temp files exists. If not, tries to create it and returns
+/// YES. If there is anything wrong, returns NO.
+- (BOOL)ensureTemporaryDirectoryExists {
+  NSFileManager *fileManager = [NSFileManager defaultManager];
+  NSError *error = nil;
+
+  // Create a temporary directory if it does not exist or was deleted.
+  if ([_networkDirectoryURL checkResourceIsReachableAndReturnError:&error]) {
+    return YES;
+  }
+
+  if (error && error.code != NSFileReadNoSuchFileError) {
+    [_loggerDelegate
+        GULNetwork_logWithLevel:kGULNetworkLogLevelWarning
+                    messageCode:kGULNetworkMessageCodeURLSession014
+                        message:@"Error while trying to access Network temp folder. Error"
+                        context:error];
+  }
+
+  NSError *writeError = nil;
+
+  [fileManager createDirectoryAtURL:_networkDirectoryURL
+        withIntermediateDirectories:YES
+                         attributes:nil
+                              error:&writeError];
+  if (writeError) {
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                 messageCode:kGULNetworkMessageCodeURLSession015
+                                     message:@"Cannot create temporary directory. Error"
+                                     context:writeError];
+    return NO;
+  }
+
+  // Set the iCloud exclusion attribute on the Documents URL.
+  [self excludeFromBackupForURL:_networkDirectoryURL];
+
+  return YES;
+}
+
+- (void)excludeFromBackupForURL:(NSURL *)url {
+  if (!url.path) {
+    return;
+  }
+
+  // Set the iCloud exclusion attribute on the Documents URL.
+  NSError *preventBackupError = nil;
+  [url setResourceValue:@YES forKey:NSURLIsExcludedFromBackupKey error:&preventBackupError];
+  if (preventBackupError) {
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                 messageCode:kGULNetworkMessageCodeURLSession016
+                                     message:@"Cannot exclude temporary folder from iTunes backup"];
+  }
+}
+
+- (void)URLSession:(NSURLSession *)session
+                          task:(NSURLSessionTask *)task
+    willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+                    newRequest:(NSURLRequest *)request
+             completionHandler:(void (^)(NSURLRequest *))completionHandler API_AVAILABLE(ios(7.0)) {
+  NSArray *nonAllowedRedirectionCodes = @[
+    @(kGULNetworkHTTPStatusCodeFound), @(kGULNetworkHTTPStatusCodeMovedPermanently),
+    @(kGULNetworkHTTPStatusCodeMovedTemporarily), @(kGULNetworkHTTPStatusCodeMultipleChoices)
+  ];
+
+  // Allow those not in the non allowed list to be followed.
+  if (![nonAllowedRedirectionCodes containsObject:@(response.statusCode)]) {
+    completionHandler(request);
+    return;
+  }
+
+  // Do not allow redirection if the response code is in the non-allowed list.
+  NSURLRequest *newRequest = request;
+
+  if (response) {
+    newRequest = nil;
+  }
+
+  completionHandler(newRequest);
+}
+
+#pragma mark - Helper Methods
+
++ (void)setSessionInFetcherMap:(GULNetworkURLSession *)session forSessionID:(NSString *)sessionID {
+  [[self sessionIDToFetcherMapReadWriteLock] lock];
+  GULNetworkURLSession *existingSession =
+      [[[self class] sessionIDToFetcherMap] objectForKey:sessionID];
+  if (existingSession) {
+    if (session) {
+      NSString *message = [NSString stringWithFormat:@"Discarding session: %@", existingSession];
+      [existingSession->_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelInfo
+                                                    messageCode:kGULNetworkMessageCodeURLSession019
+                                                        message:message];
+    }
+    [existingSession->_URLSession finishTasksAndInvalidate];
+  }
+  if (session) {
+    [[[self class] sessionIDToFetcherMap] setObject:session forKey:sessionID];
+  } else {
+    [[[self class] sessionIDToFetcherMap] removeObjectForKey:sessionID];
+  }
+  [[self sessionIDToFetcherMapReadWriteLock] unlock];
+}
+
++ (nullable GULNetworkURLSession *)sessionFromFetcherMapForSessionID:(NSString *)sessionID {
+  [[self sessionIDToFetcherMapReadWriteLock] lock];
+  GULNetworkURLSession *session = [[[self class] sessionIDToFetcherMap] objectForKey:sessionID];
+  [[self sessionIDToFetcherMapReadWriteLock] unlock];
+  return session;
+}
+
+- (void)callCompletionHandler:(GULNetworkURLSessionCompletionHandler)handler
+                 withResponse:(NSHTTPURLResponse *)response
+                         data:(NSData *)data
+                        error:(NSError *)error {
+  if (error) {
+    [_loggerDelegate GULNetwork_logWithLevel:kGULNetworkLogLevelError
+                                 messageCode:kGULNetworkMessageCodeURLSession017
+                                     message:@"Encounter network error. Code, error"
+                                    contexts:@[ @(error.code), error ]];
+  }
+
+  if (handler) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      handler(response, data, self->_sessionID, error);
+    });
+  }
+}
+
+// Always use the request parameters even if the default session configuration is more restrictive.
+- (void)populateSessionConfig:(NSURLSessionConfiguration *)sessionConfig
+                  withRequest:(NSURLRequest *)request API_AVAILABLE(ios(7.0)) {
+  sessionConfig.HTTPAdditionalHeaders = request.allHTTPHeaderFields;
+  sessionConfig.timeoutIntervalForRequest = request.timeoutInterval;
+  sessionConfig.timeoutIntervalForResource = request.timeoutInterval;
+  sessionConfig.requestCachePolicy = request.cachePolicy;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h
new file mode 100644
index 0000000..a8cc45b
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULMutableDictionary.h	
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/// A mutable dictionary that provides atomic accessor and mutators.
+@interface GULMutableDictionary : NSObject
+
+/// Returns an object given a key in the dictionary or nil if not found.
+- (id)objectForKey:(id)key;
+
+/// Updates the object given its key or adds it to the dictionary if it is not in the dictionary.
+- (void)setObject:(id)object forKey:(id<NSCopying>)key;
+
+/// Removes the object given its session ID from the dictionary.
+- (void)removeObjectForKey:(id)key;
+
+/// Removes all objects.
+- (void)removeAllObjects;
+
+/// Returns the number of current objects in the dictionary.
+- (NSUInteger)count;
+
+/// Returns an object given a key in the dictionary or nil if not found.
+- (id)objectForKeyedSubscript:(id<NSCopying>)key;
+
+/// Updates the object given its key or adds it to the dictionary if it is not in the dictionary.
+- (void)setObject:(id)obj forKeyedSubscript:(id<NSCopying>)key;
+
+/// Returns the immutable dictionary.
+- (NSDictionary *)dictionary;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetwork.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetwork.h
new file mode 100644
index 0000000..0e75ae5
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetwork.h	
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULNetworkConstants.h"
+#import "GULNetworkLoggerProtocol.h"
+#import "GULNetworkURLSession.h"
+
+/// Delegate protocol for GULNetwork events.
+@protocol GULNetworkReachabilityDelegate
+
+/// Tells the delegate to handle events when the network reachability changes to connected or not
+/// connected.
+- (void)reachabilityDidChange;
+
+@end
+
+/// The Network component that provides network status and handles network requests and responses.
+/// This is not thread safe.
+///
+/// NOTE:
+/// User must add FIRAnalytics handleEventsForBackgroundURLSessionID:completionHandler to the
+/// AppDelegate application:handleEventsForBackgroundURLSession:completionHandler:
+@interface GULNetwork : NSObject
+
+/// Indicates if network connectivity is available.
+@property(nonatomic, readonly, getter=isNetworkConnected) BOOL networkConnected;
+
+/// Indicates if there are any uploads in progress.
+@property(nonatomic, readonly, getter=hasUploadInProgress) BOOL uploadInProgress;
+
+/// An optional delegate that can be used in the event when network reachability changes.
+@property(nonatomic, weak) id<GULNetworkReachabilityDelegate> reachabilityDelegate;
+
+/// An optional delegate that can be used to log messages, warnings or errors that occur in the
+/// network operations.
+@property(nonatomic, weak) id<GULNetworkLoggerDelegate> loggerDelegate;
+
+/// Indicates whether the logger should display debug messages.
+@property(nonatomic, assign) BOOL isDebugModeEnabled;
+
+/// The time interval in seconds for the network request to timeout.
+@property(nonatomic, assign) NSTimeInterval timeoutInterval;
+
+/// Initializes with the default reachability host.
+- (instancetype)init;
+
+/// Initializes with a custom reachability host.
+- (instancetype)initWithReachabilityHost:(NSString *)reachabilityHost;
+
+/// Handles events when background session with the given ID has finished.
++ (void)handleEventsForBackgroundURLSessionID:(NSString *)sessionID
+                            completionHandler:(GULNetworkSystemCompletionHandler)completionHandler;
+
+/// Compresses and sends a POST request with the provided data to the URL. The session will be
+/// background session if usingBackgroundSession is YES. Otherwise, the POST session is default
+/// session. Returns a session ID or nil if an error occurs.
+- (NSString *)postURL:(NSURL *)url
+                   payload:(NSData *)payload
+                     queue:(dispatch_queue_t)queue
+    usingBackgroundSession:(BOOL)usingBackgroundSession
+         completionHandler:(GULNetworkCompletionHandler)handler;
+
+/// Sends a GET request with the provided data to the URL. The session will be background session
+/// if usingBackgroundSession is YES. Otherwise, the GET session is default session. Returns a
+/// session ID or nil if an error occurs.
+- (NSString *)getURL:(NSURL *)url
+                   headers:(NSDictionary *)headers
+                     queue:(dispatch_queue_t)queue
+    usingBackgroundSession:(BOOL)usingBackgroundSession
+         completionHandler:(GULNetworkCompletionHandler)handler;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h
new file mode 100644
index 0000000..1cbedd1
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkConstants.h	
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/// Error codes in Firebase Network error domain.
+/// Note: these error codes should never change. It would make it harder to decode the errors if
+/// we inadvertently altered any of these codes in a future SDK version.
+typedef NS_ENUM(NSInteger, GULNetworkErrorCode) {
+  /// Unknown error.
+  GULNetworkErrorCodeUnknown = 0,
+  /// Error occurs when the request URL is invalid.
+  GULErrorCodeNetworkInvalidURL = 1,
+  /// Error occurs when request cannot be constructed.
+  GULErrorCodeNetworkRequestCreation = 2,
+  /// Error occurs when payload cannot be compressed.
+  GULErrorCodeNetworkPayloadCompression = 3,
+  /// Error occurs when session task cannot be created.
+  GULErrorCodeNetworkSessionTaskCreation = 4,
+  /// Error occurs when there is no response.
+  GULErrorCodeNetworkInvalidResponse = 5
+};
+
+#pragma mark - Network constants
+
+/// The prefix of the ID of the background session.
+extern NSString *const kGULNetworkBackgroundSessionConfigIDPrefix;
+
+/// The sub directory to store the files of data that is being uploaded in the background.
+extern NSString *const kGULNetworkApplicationSupportSubdirectory;
+
+/// Name of the temporary directory that stores files for background uploading.
+extern NSString *const kGULNetworkTempDirectoryName;
+
+/// The period when the temporary uploading file can stay.
+extern const NSTimeInterval kGULNetworkTempFolderExpireTime;
+
+/// The default network request timeout interval.
+extern const NSTimeInterval kGULNetworkTimeOutInterval;
+
+/// The host to check the reachability of the network.
+extern NSString *const kGULNetworkReachabilityHost;
+
+/// The key to get the error context of the UserInfo.
+extern NSString *const kGULNetworkErrorContext;
+
+#pragma mark - Network Status Code
+
+extern const int kGULNetworkHTTPStatusOK;
+extern const int kGULNetworkHTTPStatusNoContent;
+extern const int kGULNetworkHTTPStatusCodeMultipleChoices;
+extern const int kGULNetworkHTTPStatusCodeMovedPermanently;
+extern const int kGULNetworkHTTPStatusCodeFound;
+extern const int kGULNetworkHTTPStatusCodeNotModified;
+extern const int kGULNetworkHTTPStatusCodeMovedTemporarily;
+extern const int kGULNetworkHTTPStatusCodeNotFound;
+extern const int kGULNetworkHTTPStatusCodeCannotAcceptTraffic;
+extern const int kGULNetworkHTTPStatusCodeUnavailable;
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkLoggerProtocol.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkLoggerProtocol.h
new file mode 100644
index 0000000..425c073
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkLoggerProtocol.h	
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULNetworkMessageCode.h"
+
+/// The log levels used by GULNetworkLogger.
+typedef NS_ENUM(NSInteger, GULNetworkLogLevel) {
+  kGULNetworkLogLevelError = 3,
+  kGULNetworkLogLevelWarning = 4,
+  kGULNetworkLogLevelInfo = 6,
+  kGULNetworkLogLevelDebug = 7,
+};
+
+@protocol GULNetworkLoggerDelegate <NSObject>
+
+@required
+/// Tells the delegate to log a message with an array of contexts and the log level.
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message
+                       contexts:(NSArray *)contexts;
+
+/// Tells the delegate to log a message with a context and the log level.
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message
+                        context:(id)context;
+
+/// Tells the delegate to log a message with the log level.
+- (void)GULNetwork_logWithLevel:(GULNetworkLogLevel)logLevel
+                    messageCode:(GULNetworkMessageCode)messageCode
+                        message:(NSString *)message;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkMessageCode.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkMessageCode.h
new file mode 100644
index 0000000..507bc5a
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkMessageCode.h	
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+// Make sure these codes do not overlap with any contained in the FIRAMessageCode enum.
+typedef NS_ENUM(NSInteger, GULNetworkMessageCode) {
+  // GULNetwork.m
+  kGULNetworkMessageCodeNetwork000 = 900000,  // I-NET900000
+  kGULNetworkMessageCodeNetwork001 = 900001,  // I-NET900001
+  kGULNetworkMessageCodeNetwork002 = 900002,  // I-NET900002
+  kGULNetworkMessageCodeNetwork003 = 900003,  // I-NET900003
+  // GULNetworkURLSession.m
+  kGULNetworkMessageCodeURLSession000 = 901000,  // I-NET901000
+  kGULNetworkMessageCodeURLSession001 = 901001,  // I-NET901001
+  kGULNetworkMessageCodeURLSession002 = 901002,  // I-NET901002
+  kGULNetworkMessageCodeURLSession003 = 901003,  // I-NET901003
+  kGULNetworkMessageCodeURLSession004 = 901004,  // I-NET901004
+  kGULNetworkMessageCodeURLSession005 = 901005,  // I-NET901005
+  kGULNetworkMessageCodeURLSession006 = 901006,  // I-NET901006
+  kGULNetworkMessageCodeURLSession007 = 901007,  // I-NET901007
+  kGULNetworkMessageCodeURLSession008 = 901008,  // I-NET901008
+  kGULNetworkMessageCodeURLSession009 = 901009,  // I-NET901009
+  kGULNetworkMessageCodeURLSession010 = 901010,  // I-NET901010
+  kGULNetworkMessageCodeURLSession011 = 901011,  // I-NET901011
+  kGULNetworkMessageCodeURLSession012 = 901012,  // I-NET901012
+  kGULNetworkMessageCodeURLSession013 = 901013,  // I-NET901013
+  kGULNetworkMessageCodeURLSession014 = 901014,  // I-NET901014
+  kGULNetworkMessageCodeURLSession015 = 901015,  // I-NET901015
+  kGULNetworkMessageCodeURLSession016 = 901016,  // I-NET901016
+  kGULNetworkMessageCodeURLSession017 = 901017,  // I-NET901017
+  kGULNetworkMessageCodeURLSession018 = 901018,  // I-NET901018
+  kGULNetworkMessageCodeURLSession019 = 901019,  // I-NET901019
+};
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkURLSession.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkURLSession.h
new file mode 100644
index 0000000..3f9f7f9
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Network/Public/GoogleUtilities/GULNetworkURLSession.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GULNetworkLoggerProtocol.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef void (^GULNetworkCompletionHandler)(NSHTTPURLResponse *_Nullable response,
+                                            NSData *_Nullable data,
+                                            NSError *_Nullable error);
+typedef void (^GULNetworkURLSessionCompletionHandler)(NSHTTPURLResponse *_Nullable response,
+                                                      NSData *_Nullable data,
+                                                      NSString *sessionID,
+                                                      NSError *_Nullable error);
+typedef void (^GULNetworkSystemCompletionHandler)(void);
+
+/// The protocol that uses NSURLSession for iOS >= 7.0 to handle requests and responses.
+@interface GULNetworkURLSession : NSObject
+
+/// Indicates whether the background network is enabled. Default value is NO.
+@property(nonatomic, getter=isBackgroundNetworkEnabled) BOOL backgroundNetworkEnabled;
+
+/// The logger delegate to log message, errors or warnings that occur during the network operations.
+@property(nonatomic, weak, nullable) id<GULNetworkLoggerDelegate> loggerDelegate;
+
+/// Calls the system provided completion handler after the background session is finished.
++ (void)handleEventsForBackgroundURLSessionID:(NSString *)sessionID
+                            completionHandler:(GULNetworkSystemCompletionHandler)completionHandler;
+
+/// Initializes with logger delegate.
+- (instancetype)initWithNetworkLoggerDelegate:
+    (nullable id<GULNetworkLoggerDelegate>)networkLoggerDelegate NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/// Sends an asynchronous POST request and calls the provided completion handler when the request
+/// completes or when errors occur, and returns an ID of the session/connection.
+- (nullable NSString *)sessionIDFromAsyncPOSTRequest:(NSURLRequest *)request
+                                   completionHandler:(GULNetworkURLSessionCompletionHandler)handler;
+
+/// Sends an asynchronous GET request and calls the provided completion handler when the request
+/// completes or when errors occur, and returns an ID of the session.
+- (nullable NSString *)sessionIDFromAsyncGETRequest:(NSURLRequest *)request
+                                  completionHandler:(GULNetworkURLSessionCompletionHandler)handler;
+
+NS_ASSUME_NONNULL_END
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker+Internal.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker+Internal.h
new file mode 100644
index 0000000..103ed3b
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker+Internal.h	
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h"
+
+#if !TARGET_OS_WATCH
+typedef SCNetworkReachabilityRef (*GULReachabilityCreateWithNameFn)(CFAllocatorRef allocator,
+                                                                    const char *host);
+
+typedef Boolean (*GULReachabilitySetCallbackFn)(SCNetworkReachabilityRef target,
+                                                SCNetworkReachabilityCallBack callback,
+                                                SCNetworkReachabilityContext *context);
+typedef Boolean (*GULReachabilityScheduleWithRunLoopFn)(SCNetworkReachabilityRef target,
+                                                        CFRunLoopRef runLoop,
+                                                        CFStringRef runLoopMode);
+typedef Boolean (*GULReachabilityUnscheduleFromRunLoopFn)(SCNetworkReachabilityRef target,
+                                                          CFRunLoopRef runLoop,
+                                                          CFStringRef runLoopMode);
+
+typedef void (*GULReachabilityReleaseFn)(CFTypeRef cf);
+
+struct GULReachabilityApi {
+  GULReachabilityCreateWithNameFn createWithNameFn;
+  GULReachabilitySetCallbackFn setCallbackFn;
+  GULReachabilityScheduleWithRunLoopFn scheduleWithRunLoopFn;
+  GULReachabilityUnscheduleFromRunLoopFn unscheduleFromRunLoopFn;
+  GULReachabilityReleaseFn releaseFn;
+};
+#endif
+@interface GULReachabilityChecker (Internal)
+
+- (const struct GULReachabilityApi *)reachabilityApi;
+- (void)setReachabilityApi:(const struct GULReachabilityApi *)reachabilityApi;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker.m b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker.m
new file mode 100644
index 0000000..f0d1235
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityChecker.m	
@@ -0,0 +1,263 @@
+// Copyright 2017 Google
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import "GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h"
+
+#import "GoogleUtilities/Reachability/GULReachabilityChecker+Internal.h"
+#import "GoogleUtilities/Reachability/GULReachabilityMessageCode.h"
+
+#import "GoogleUtilities/Logger/Public/GoogleUtilities/GULLogger.h"
+
+static GULLoggerService kGULLoggerReachability = @"[GULReachability]";
+#if !TARGET_OS_WATCH
+static void ReachabilityCallback(SCNetworkReachabilityRef reachability,
+                                 SCNetworkReachabilityFlags flags,
+                                 void *info);
+
+static const struct GULReachabilityApi kGULDefaultReachabilityApi = {
+    SCNetworkReachabilityCreateWithName,
+    SCNetworkReachabilitySetCallback,
+    SCNetworkReachabilityScheduleWithRunLoop,
+    SCNetworkReachabilityUnscheduleFromRunLoop,
+    CFRelease,
+};
+
+static NSString *const kGULReachabilityUnknownStatus = @"Unknown";
+static NSString *const kGULReachabilityConnectedStatus = @"Connected";
+static NSString *const kGULReachabilityDisconnectedStatus = @"Disconnected";
+#endif
+@interface GULReachabilityChecker ()
+
+@property(nonatomic, assign) const struct GULReachabilityApi *reachabilityApi;
+@property(nonatomic, assign) GULReachabilityStatus reachabilityStatus;
+@property(nonatomic, copy) NSString *host;
+#if !TARGET_OS_WATCH
+@property(nonatomic, assign) SCNetworkReachabilityRef reachability;
+#endif
+
+@end
+
+@implementation GULReachabilityChecker
+
+@synthesize reachabilityApi = reachabilityApi_;
+#if !TARGET_OS_WATCH
+@synthesize reachability = reachability_;
+#endif
+
+- (const struct GULReachabilityApi *)reachabilityApi {
+  return reachabilityApi_;
+}
+
+- (void)setReachabilityApi:(const struct GULReachabilityApi *)reachabilityApi {
+#if !TARGET_OS_WATCH
+  if (reachability_) {
+    GULLogError(kGULLoggerReachability, NO,
+                [NSString stringWithFormat:@"I-REA%06ld", (long)kGULReachabilityMessageCode000],
+                @"Cannot change reachability API while reachability is running. "
+                @"Call stop first.");
+    return;
+  }
+  reachabilityApi_ = reachabilityApi;
+#endif
+}
+
+@synthesize reachabilityStatus = reachabilityStatus_;
+@synthesize host = host_;
+@synthesize reachabilityDelegate = reachabilityDelegate_;
+
+- (BOOL)isActive {
+#if !TARGET_OS_WATCH
+  return reachability_ != nil;
+#else
+  return NO;
+#endif
+}
+
+- (void)setReachabilityDelegate:(id<GULReachabilityDelegate>)reachabilityDelegate {
+  if (reachabilityDelegate &&
+      (![(NSObject *)reachabilityDelegate conformsToProtocol:@protocol(GULReachabilityDelegate)])) {
+    GULLogError(kGULLoggerReachability, NO,
+                [NSString stringWithFormat:@"I-NET%06ld", (long)kGULReachabilityMessageCode005],
+                @"Reachability delegate doesn't conform to Reachability protocol.");
+    return;
+  }
+  reachabilityDelegate_ = reachabilityDelegate;
+}
+
+- (instancetype)initWithReachabilityDelegate:(id<GULReachabilityDelegate>)reachabilityDelegate
+                                    withHost:(NSString *)host {
+  self = [super init];
+
+  if (!host || !host.length) {
+    GULLogError(kGULLoggerReachability, NO,
+                [NSString stringWithFormat:@"I-REA%06ld", (long)kGULReachabilityMessageCode001],
+                @"Invalid host specified");
+    return nil;
+  }
+  if (self) {
+#if !TARGET_OS_WATCH
+    [self setReachabilityDelegate:reachabilityDelegate];
+    reachabilityApi_ = &kGULDefaultReachabilityApi;
+    reachabilityStatus_ = kGULReachabilityUnknown;
+    host_ = [host copy];
+    reachability_ = nil;
+#endif
+  }
+  return self;
+}
+
+- (void)dealloc {
+  reachabilityDelegate_ = nil;
+  [self stop];
+}
+
+- (BOOL)start {
+#if TARGET_OS_WATCH
+  return NO;
+#else
+
+  if (!reachability_) {
+    reachability_ = reachabilityApi_->createWithNameFn(kCFAllocatorDefault, [host_ UTF8String]);
+    if (!reachability_) {
+      return NO;
+    }
+    SCNetworkReachabilityContext context = {
+        0,                       /* version */
+        (__bridge void *)(self), /* info (passed as last parameter to reachability callback) */
+        NULL,                    /* retain */
+        NULL,                    /* release */
+        NULL                     /* copyDescription */
+    };
+    if (!reachabilityApi_->setCallbackFn(reachability_, ReachabilityCallback, &context) ||
+        !reachabilityApi_->scheduleWithRunLoopFn(reachability_, CFRunLoopGetMain(),
+                                                 kCFRunLoopCommonModes)) {
+      reachabilityApi_->releaseFn(reachability_);
+      reachability_ = nil;
+
+      GULLogError(kGULLoggerReachability, NO,
+                  [NSString stringWithFormat:@"I-REA%06ld", (long)kGULReachabilityMessageCode002],
+                  @"Failed to start reachability handle");
+      return NO;
+    }
+  }
+  GULLogDebug(kGULLoggerReachability, NO,
+              [NSString stringWithFormat:@"I-REA%06ld", (long)kGULReachabilityMessageCode003],
+              @"Monitoring the network status");
+  return YES;
+#endif
+}
+
+- (void)stop {
+#if !TARGET_OS_WATCH
+  if (reachability_) {
+    reachabilityStatus_ = kGULReachabilityUnknown;
+    reachabilityApi_->unscheduleFromRunLoopFn(reachability_, CFRunLoopGetMain(),
+                                              kCFRunLoopCommonModes);
+    reachabilityApi_->releaseFn(reachability_);
+    reachability_ = nil;
+  }
+#endif
+}
+
+#if !TARGET_OS_WATCH
+- (GULReachabilityStatus)statusForFlags:(SCNetworkReachabilityFlags)flags {
+  GULReachabilityStatus status = kGULReachabilityNotReachable;
+  // If the Reachable flag is not set, we definitely don't have connectivity.
+  if (flags & kSCNetworkReachabilityFlagsReachable) {
+    // Reachable flag is set. Check further flags.
+    if (!(flags & kSCNetworkReachabilityFlagsConnectionRequired)) {
+// Connection required flag is not set, so we have connectivity.
+#if TARGET_OS_IOS || TARGET_OS_TV
+      status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kGULReachabilityViaCellular
+                                                           : kGULReachabilityViaWifi;
+#elif TARGET_OS_OSX
+      status = kGULReachabilityViaWifi;
+#endif
+    } else if ((flags & (kSCNetworkReachabilityFlagsConnectionOnDemand |
+                         kSCNetworkReachabilityFlagsConnectionOnTraffic)) &&
+               !(flags & kSCNetworkReachabilityFlagsInterventionRequired)) {
+// If the connection on demand or connection on traffic flag is set, and user intervention
+// is not required, we have connectivity.
+#if TARGET_OS_IOS || TARGET_OS_TV
+      status = (flags & kSCNetworkReachabilityFlagsIsWWAN) ? kGULReachabilityViaCellular
+                                                           : kGULReachabilityViaWifi;
+#elif TARGET_OS_OSX
+      status = kGULReachabilityViaWifi;
+#endif
+    }
+  }
+  return status;
+}
+
+- (void)reachabilityFlagsChanged:(SCNetworkReachabilityFlags)flags {
+  GULReachabilityStatus status = [self statusForFlags:flags];
+  if (reachabilityStatus_ != status) {
+    NSString *reachabilityStatusString;
+    if (status == kGULReachabilityUnknown) {
+      reachabilityStatusString = kGULReachabilityUnknownStatus;
+    } else {
+      reachabilityStatusString = (status == kGULReachabilityNotReachable)
+                                     ? kGULReachabilityDisconnectedStatus
+                                     : kGULReachabilityConnectedStatus;
+    }
+
+    GULLogDebug(kGULLoggerReachability, NO,
+                [NSString stringWithFormat:@"I-REA%06ld", (long)kGULReachabilityMessageCode004],
+                @"Network status has changed. Code:%@, status:%@", @(status),
+                reachabilityStatusString);
+    reachabilityStatus_ = status;
+    [reachabilityDelegate_ reachability:self statusChanged:reachabilityStatus_];
+  }
+}
+
+#endif
+@end
+
+#if !TARGET_OS_WATCH
+static void ReachabilityCallback(SCNetworkReachabilityRef reachability,
+                                 SCNetworkReachabilityFlags flags,
+                                 void *info) {
+  GULReachabilityChecker *checker = (__bridge GULReachabilityChecker *)info;
+  [checker reachabilityFlagsChanged:flags];
+}
+#endif
+
+// This function used to be at the top of the file, but it was moved here
+// as a workaround for a suspected compiler bug. When compiled in Release mode
+// and run on an iOS device with WiFi disabled, the reachability code crashed
+// when calling SCNetworkReachabilityScheduleWithRunLoop, or shortly thereafter.
+// After unsuccessfully trying to diagnose the cause of the crash, it was
+// discovered that moving this function to the end of the file magically fixed
+// the crash. If you are going to edit this file, exercise caution and make sure
+// to test thoroughly with an iOS device under various network conditions.
+const NSString *GULReachabilityStatusString(GULReachabilityStatus status) {
+  switch (status) {
+    case kGULReachabilityUnknown:
+      return @"Reachability Unknown";
+
+    case kGULReachabilityNotReachable:
+      return @"Not reachable";
+
+    case kGULReachabilityViaWifi:
+      return @"Reachable via Wifi";
+
+    case kGULReachabilityViaCellular:
+      return @"Reachable via Cellular Data";
+
+    default:
+      return [NSString stringWithFormat:@"Invalid reachability status %d", (int)status];
+  }
+}
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityMessageCode.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityMessageCode.h
new file mode 100644
index 0000000..373e0af
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/GULReachabilityMessageCode.h	
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+// Make sure these codes do not overlap with any contained in the FIRAMessageCode enum.
+typedef NS_ENUM(NSInteger, GULReachabilityMessageCode) {
+  // GULReachabilityChecker.m
+  kGULReachabilityMessageCode000 = 902000,  // I-NET902000
+  kGULReachabilityMessageCode001 = 902001,  // I-NET902001
+  kGULReachabilityMessageCode002 = 902002,  // I-NET902002
+  kGULReachabilityMessageCode003 = 902003,  // I-NET902003
+  kGULReachabilityMessageCode004 = 902004,  // I-NET902004
+  kGULReachabilityMessageCode005 = 902005,  // I-NET902005
+  kGULReachabilityMessageCode006 = 902006,  // I-NET902006
+};
diff --git a/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h
new file mode 100644
index 0000000..0c70c05
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/GoogleUtilities/Reachability/Public/GoogleUtilities/GULReachabilityChecker.h	
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+#endif
+
+/// Reachability Status
+typedef enum {
+  kGULReachabilityUnknown,  ///< Have not yet checked or been notified whether host is reachable.
+  kGULReachabilityNotReachable,  ///< Host is not reachable.
+  kGULReachabilityViaWifi,       ///< Host is reachable via Wifi.
+  kGULReachabilityViaCellular,   ///< Host is reachable via cellular.
+} GULReachabilityStatus;
+
+const NSString *GULReachabilityStatusString(GULReachabilityStatus status);
+
+@class GULReachabilityChecker;
+
+/// Google Analytics iOS Reachability Checker.
+@protocol GULReachabilityDelegate
+@required
+/// Called when network status has changed.
+- (void)reachability:(GULReachabilityChecker *)reachability
+       statusChanged:(GULReachabilityStatus)status;
+@end
+
+/// Google Analytics iOS Network Status Checker.
+@interface GULReachabilityChecker : NSObject
+
+/// The last known reachability status, or GULReachabilityStatusUnknown if the
+/// checker is not active.
+@property(nonatomic, readonly) GULReachabilityStatus reachabilityStatus;
+/// The host to which reachability status is to be checked.
+@property(nonatomic, copy, readonly) NSString *host;
+/// The delegate to be notified of reachability status changes.
+@property(nonatomic, weak) id<GULReachabilityDelegate> reachabilityDelegate;
+/// `YES` if the reachability checker is active, `NO` otherwise.
+@property(nonatomic, readonly) BOOL isActive;
+
+/// Initialize the reachability checker. Note that you must call start to begin checking for and
+/// receiving notifications about network status changes.
+///
+/// @param reachabilityDelegate The delegate to be notified when reachability status to host
+/// changes.
+///
+/// @param host The name of the host.
+///
+- (instancetype)initWithReachabilityDelegate:(id<GULReachabilityDelegate>)reachabilityDelegate
+                                    withHost:(NSString *)host;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+/// Start checking for reachability to the specified host. This has no effect if the status
+/// checker is already checking for connectivity.
+///
+/// @return `YES` if initiating status checking was successful or the status checking has already
+/// been initiated, `NO` otherwise.
+- (BOOL)start;
+
+/// Stop checking for reachability to the specified host. This has no effect if the status
+/// checker is not checking for connectivity.
+- (void)stop;
+
+@end
diff --git a/ChattingApp 000/Pods/GoogleUtilities/LICENSE b/ChattingApp 000/Pods/GoogleUtilities/LICENSE
new file mode 100644
index 0000000..30a8f72
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/LICENSE	
@@ -0,0 +1,247 @@
+
+                                 Apache License
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+   Licensed under the Apache License, Version 2.0 (the "License");
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+================================================================================
+
+The following copyright from Landon J. Fuller applies to the isAppEncrypted
+function in Environment/third_party/GULAppEnvironmentUtil.m.
+
+Copyright (c) 2017 Landon J. Fuller <landon@landonf.org>
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Comment from
+<a href="http://iphonedevwiki.net/index.php/Crack_prevention">iPhone Dev Wiki
+Crack Prevention</a>: App Store binaries are signed by both their developer
+and Apple. This encrypts the binary so that decryption keys are needed in order
+to make the binary readable. When iOS executes the binary, the decryption keys
+are used to decrypt the binary into a readable state where it is then loaded
+into memory and executed. iOS can tell the encryption status of a binary via the
+cryptid structure member of LC_ENCRYPTION_INFO MachO load command. If cryptid is
+a non-zero value then the binary is encrypted.
+
+'Cracking' works by letting the kernel decrypt the binary then siphoning the
+decrypted data into a new binary file, resigning, and repackaging. This will
+only work on jailbroken devices as codesignature validation has been removed.
+Resigning takes place because while the codesignature doesn't have to be valid
+thanks to the jailbreak, it does have to be in place unless you have AppSync or
+similar to disable codesignature checks.
+
+More information at <a href="http://landonf.org/2009/02/index.html">Landon
+Fuller's blog</a>
diff --git a/ChattingApp 000/Pods/GoogleUtilities/README.md b/ChattingApp 000/Pods/GoogleUtilities/README.md
new file mode 100644
index 0000000..ff9fe1a
--- /dev/null
+++ b/ChattingApp 000/Pods/GoogleUtilities/README.md	
@@ -0,0 +1,189 @@
+[![Version](https://img.shields.io/cocoapods/v/GoogleUtilities.svg?style=flat)](https://cocoapods.org/pods/GoogleUtilities)
+[![License](https://img.shields.io/cocoapods/l/GoogleUtilities.svg?style=flat)](https://cocoapods.org/pods/GoogleUtilities)
+[![Platform](https://img.shields.io/cocoapods/p/GoogleUtilities.svg?style=flat)](https://cocoapods.org/pods/GoogleUtilities)
+
+[![Actions Status][gh-google-utilities-badge]][gh-actions]
+
+# GoogleUtilities
+
+GoogleUtilities provides a set of utilities for Firebase and other Google SDKs for Apple platform
+development.
+
+The utilities are not directly supported for non-Google library usage.
+
+## Integration Testing
+These instructions apply to minor and patch version updates. Major versions need
+a customized adaptation.
+
+After the CI is green:
+* Determine the next version for release by checking the
+  [tagged releases](https://github.com/google/GoogleUtilities/tags).
+  Ensure that the next release version keeps the Swift PM and CocoaPods versions in sync.
+* Verify that the releasing version is the latest entry in the [CHANGELOG.md](CHANGELOG.md),
+  updating it if necessary.
+* Update the version in the podspec to match the latest entry in the [CHANGELOG.md](CHANGELOG.md)
+* Checkout the `main` branch and ensure it is up to date
+  ```console
+  git checkout main
+  git pull
+  ```
+* Add the CocoaPods tag (`{version}` will be the latest version in the [podspec](GoogleUtilities.podspec#L3))
+  ```console
+  git tag CocoaPods-{version}
+  git push origin CocoaPods-{version}
+  ```
+* Push the podspec to the designated repo
+  * If this version of GoogleUtilities is intended to launch **before or with** the next Firebase release:
+    <details>
+    <summary>Push to <b>SpecsStaging</b></summary>
+
+    ```console
+    pod repo push --skip-tests staging GoogleUtilities.podspec
+    ```
+
+    If the command fails with `Unable to find the 'staging' repo.`, add the staging repo with:
+    ```console
+    pod repo add staging git@github.com:firebase/SpecsStaging.git
+    ```
+    </details>
+  * Otherwise:
+    <details>
+    <summary>Push to <b>SpecsDev</b></summary>
+
+    ```console
+    pod repo push --skip-tests dev GoogleUtilities.podspec
+    ```
+
+    If the command fails with `Unable to find the 'dev' repo.`, add the dev repo with:
+    ```console
+    pod repo add dev git@github.com:firebase/SpecsDev.git
+    ```
+    </details>
+* Run Firebase CI by waiting until next nightly or adding a PR that touches `Gemfile`.
+* On google3, run copybara using the command below. Then, start a global TAP on the generated CL. Deflake as needed.
+  ```console
+  third_party/firebase/ios/Releases/run_copy_bara.py --directory GoogleUtilities --branch main
+  ```
+
+## Publishing
+The release process is as follows:
+1. [Tag and release for Swift PM](#swift-package-manager)
+2. [Publish to CocoaPods](#cocoapods)
+3. [Create GitHub Release](#create-github-release)
+4. [Perform post release cleanup](#post-release-cleanup)
+
+### Swift Package Manager
+  By creating and [pushing a tag](https://github.com/google/GoogleUtilities/tags)
+  for Swift PM, the newly tagged version will be immediately released for public use.
+  Given this, please verify the intended time of release for Swift PM.
+  * Add a version tag for Swift PM
+  ```console
+  git tag {version}
+  git push origin {version}
+  ```
+  *Note: Ensure that any inflight PRs that depend on the new `GoogleUtilities` version are updated to point to the
+  newly tagged version rather than a checksum.*
+
+### CocoaPods
+* Publish the newly versioned pod to CocoaPods
+
+  It's recommended to point to the `GoogleUtilities.podspec` in `staging` to make sure the correct spec is being published.
+  ```console
+  pod trunk push ~/.cocoapods/repos/staging/GoogleUtilities/{version}/GoogleUtilities.podspec
+  ```
+  *Note: In some cases, it may be acceptable to `pod trunk push` with the `--skip-tests` flag. Please double check with
+  the maintainers before doing so.*
+
+  The pod push was successful if the above command logs: `🚀  GoogleUtilities ({version}) successfully published`.
+  In addition, a new commit that publishes the new version (co-authored by [CocoaPodsAtGoogle](https://github.com/CocoaPodsAtGoogle))
+  should appear in the [CocoaPods specs repo](https://github.com/CocoaPods/Specs). Last, the latest version should be displayed
+  on [GoogleUtilities's CocoaPods page](https://cocoapods.org/pods/GoogleUtilities).
+
+### [Create GitHub Release](https://github.com/google/GoogleUtilities/releases/new/)
+  Update the [release template](https://github.com/google/GoogleUtilities/releases/new/)'s **Tag version** and **Release title**
+  fields with the latest version. In addition, reference the [Release Notes](./CHANGELOG.md) in the release's description.
+
+  See [this release](https://github.com/google/GoogleUtilities/releases/edit/9.0.1) for an example.
+
+  *Don't forget to perform the [post release cleanup](#post-release-cleanup)!*
+
+### Post Release Cleanup
+  <details>
+  <summary>Clean up <b>SpecsStaging</b></summary>
+
+  ```console
+  pwd=$(pwd)
+  mkdir -p /tmp/release-cleanup && cd $_
+  git clone git@github.com:firebase/SpecsStaging.git
+  cd SpecsStaging/
+  git rm -rf GoogleUtilities/
+  git commit -m "Post publish cleanup"
+  git push origin master
+  rm -rf /tmp/release-cleanup
+  cd $pwd
+  ```
+  </details>
+
+## Development
+
+To develop in this repository, ensure that you have at least the following software:
+
+  * Xcode 12.0 (or later)
+  * CocoaPods 1.10.0 (or later)
+  * [CocoaPods generate](https://github.com/square/cocoapods-generate)
+
+For the pod that you want to develop:
+
+`pod gen GoogleUtilities.podspec --local-sources=./ --auto-open --platforms=ios`
+
+Note: If the CocoaPods cache is out of date, you may need to run
+`pod repo update` before the `pod gen` command.
+
+Note: Set the `--platforms` option to `macos` or `tvos` to develop/test for
+those platforms. Since 10.2, Xcode does not properly handle multi-platform
+CocoaPods workspaces.
+
+### Development for Catalyst
+* `pod gen GoogleUtilities.podspec --local-sources=./ --auto-open --platforms=ios`
+* Check the Mac box in the App-iOS Build Settings
+* Sign the App in the Settings Signing & Capabilities tab
+* Click Pods in the Project Manager
+* Add Signing to the iOS host app and unit test targets
+* Select the Unit-unit scheme
+* Run it to build and test
+
+Alternatively disable signing in each target:
+* Go to Build Settings tab
+* Click `+`
+* Select `Add User-Defined Setting`
+* Add `CODE_SIGNING_REQUIRED` setting with a value of `NO`
+
+### Code Formatting
+
+To ensure that the code is formatted consistently, run the script
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
+before creating a PR.
+
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
+
+```console
+brew install clang-format@13
+brew install mint
+```
+
+### Running Unit Tests
+
+Select a scheme and press Command-u to build a component and run its unit tests.
+
+## Contributing
+
+See [Contributing](CONTRIBUTING.md).
+
+## License
+
+The contents of this repository is licensed under the
+[Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0).
+
+[gh-actions]: https://github.com/firebase/firebase-ios-sdk/actions
+[gh-google-utilities-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/google-utilities/badge.svg
diff --git a/ChattingApp 000/Pods/Headers/Private/Firebase/Firebase.h b/ChattingApp 000/Pods/Headers/Private/Firebase/Firebase.h
new file mode 120000
index 0000000..07ac6eb
--- /dev/null
+++ b/ChattingApp 000/Pods/Headers/Private/Firebase/Firebase.h	
@@ -0,0 +1 @@
+../../../Firebase/CoreOnly/Sources/Firebase.h
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Headers/Public/Firebase/Firebase.h b/ChattingApp 000/Pods/Headers/Public/Firebase/Firebase.h
new file mode 120000
index 0000000..07ac6eb
--- /dev/null
+++ b/ChattingApp 000/Pods/Headers/Public/Firebase/Firebase.h	
@@ -0,0 +1 @@
+../../../Firebase/CoreOnly/Sources/Firebase.h
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Manifest.lock b/ChattingApp 000/Pods/Manifest.lock
new file mode 100644
index 0000000..617fb9d
--- /dev/null
+++ b/ChattingApp 000/Pods/Manifest.lock	
@@ -0,0 +1,475 @@
+PODS:
+  - abseil/algorithm (0.20200225.0):
+    - abseil/algorithm/algorithm (= 0.20200225.0)
+    - abseil/algorithm/container (= 0.20200225.0)
+  - abseil/algorithm/algorithm (0.20200225.0):
+    - abseil/base/config
+  - abseil/algorithm/container (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/base (0.20200225.0):
+    - abseil/base/atomic_hook (= 0.20200225.0)
+    - abseil/base/base (= 0.20200225.0)
+    - abseil/base/base_internal (= 0.20200225.0)
+    - abseil/base/bits (= 0.20200225.0)
+    - abseil/base/config (= 0.20200225.0)
+    - abseil/base/core_headers (= 0.20200225.0)
+    - abseil/base/dynamic_annotations (= 0.20200225.0)
+    - abseil/base/endian (= 0.20200225.0)
+    - abseil/base/errno_saver (= 0.20200225.0)
+    - abseil/base/exponential_biased (= 0.20200225.0)
+    - abseil/base/log_severity (= 0.20200225.0)
+    - abseil/base/malloc_internal (= 0.20200225.0)
+    - abseil/base/periodic_sampler (= 0.20200225.0)
+    - abseil/base/pretty_function (= 0.20200225.0)
+    - abseil/base/raw_logging_internal (= 0.20200225.0)
+    - abseil/base/spinlock_wait (= 0.20200225.0)
+    - abseil/base/throw_delegate (= 0.20200225.0)
+  - abseil/base/atomic_hook (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/base (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/log_severity
+    - abseil/base/raw_logging_internal
+    - abseil/base/spinlock_wait
+    - abseil/meta/type_traits
+  - abseil/base/base_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/meta/type_traits
+  - abseil/base/bits (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/config (0.20200225.0)
+  - abseil/base/core_headers (0.20200225.0):
+    - abseil/base/config
+  - abseil/base/dynamic_annotations (0.20200225.0)
+  - abseil/base/endian (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/errno_saver (0.20200225.0):
+    - abseil/base/config
+  - abseil/base/exponential_biased (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/log_severity (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/base/malloc_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/raw_logging_internal
+  - abseil/base/periodic_sampler (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/exponential_biased
+  - abseil/base/pretty_function (0.20200225.0)
+  - abseil/base/raw_logging_internal (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/log_severity
+  - abseil/base/spinlock_wait (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/core_headers
+    - abseil/base/errno_saver
+  - abseil/base/throw_delegate (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/container/common (0.20200225.0):
+    - abseil/meta/type_traits
+    - abseil/types/optional
+  - abseil/container/compressed_tuple (0.20200225.0):
+    - abseil/utility/utility
+  - abseil/container/container_memory (0.20200225.0):
+    - abseil/memory/memory
+    - abseil/utility/utility
+  - abseil/container/fixed_array (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/throw_delegate
+    - abseil/container/compressed_tuple
+    - abseil/memory/memory
+  - abseil/container/flat_hash_map (0.20200225.0):
+    - abseil/algorithm/container
+    - abseil/container/container_memory
+    - abseil/container/hash_function_defaults
+    - abseil/container/raw_hash_map
+    - abseil/memory/memory
+  - abseil/container/hash_function_defaults (0.20200225.0):
+    - abseil/base/config
+    - abseil/hash/hash
+    - abseil/strings/strings
+  - abseil/container/hash_policy_traits (0.20200225.0):
+    - abseil/meta/type_traits
+  - abseil/container/hashtable_debug_hooks (0.20200225.0):
+    - abseil/base/config
+  - abseil/container/hashtablez_sampler (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/core_headers
+    - abseil/base/exponential_biased
+    - abseil/container/have_sse
+    - abseil/debugging/stacktrace
+    - abseil/memory/memory
+    - abseil/synchronization/synchronization
+    - abseil/utility/utility
+  - abseil/container/have_sse (0.20200225.0)
+  - abseil/container/inlined_vector (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/throw_delegate
+    - abseil/container/inlined_vector_internal
+    - abseil/memory/memory
+  - abseil/container/inlined_vector_internal (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/container/compressed_tuple
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/types/span
+  - abseil/container/layout (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/strings/strings
+    - abseil/types/span
+    - abseil/utility/utility
+  - abseil/container/raw_hash_map (0.20200225.0):
+    - abseil/base/throw_delegate
+    - abseil/container/container_memory
+    - abseil/container/raw_hash_set
+  - abseil/container/raw_hash_set (0.20200225.0):
+    - abseil/base/bits
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/container/common
+    - abseil/container/compressed_tuple
+    - abseil/container/container_memory
+    - abseil/container/hash_policy_traits
+    - abseil/container/hashtable_debug_hooks
+    - abseil/container/hashtablez_sampler
+    - abseil/container/have_sse
+    - abseil/container/layout
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/utility/utility
+  - abseil/debugging/debugging_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/errno_saver
+    - abseil/base/raw_logging_internal
+  - abseil/debugging/demangle_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/debugging/stacktrace (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/debugging/debugging_internal
+  - abseil/debugging/symbolize (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+    - abseil/debugging/debugging_internal
+    - abseil/debugging/demangle_internal
+  - abseil/hash/city (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+  - abseil/hash/hash (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/container/fixed_array
+    - abseil/hash/city
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/types/optional
+    - abseil/types/variant
+    - abseil/utility/utility
+  - abseil/memory (0.20200225.0):
+    - abseil/memory/memory (= 0.20200225.0)
+  - abseil/memory/memory (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/meta (0.20200225.0):
+    - abseil/meta/type_traits (= 0.20200225.0)
+  - abseil/meta/type_traits (0.20200225.0):
+    - abseil/base/config
+  - abseil/numeric/int128 (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+  - abseil/strings/internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/base/raw_logging_internal
+    - abseil/meta/type_traits
+  - abseil/strings/str_format (0.20200225.0):
+    - abseil/strings/str_format_internal
+  - abseil/strings/str_format_internal (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/types/span
+  - abseil/strings/strings (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/bits
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/endian
+    - abseil/base/raw_logging_internal
+    - abseil/base/throw_delegate
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/numeric/int128
+    - abseil/strings/internal
+  - abseil/synchronization/graphcycles_internal (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+  - abseil/synchronization/kernel_timeout_internal (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/base/raw_logging_internal
+    - abseil/time/time
+  - abseil/synchronization/synchronization (0.20200225.0):
+    - abseil/base/atomic_hook
+    - abseil/base/base
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/base/dynamic_annotations
+    - abseil/base/malloc_internal
+    - abseil/base/raw_logging_internal
+    - abseil/debugging/stacktrace
+    - abseil/debugging/symbolize
+    - abseil/synchronization/graphcycles_internal
+    - abseil/synchronization/kernel_timeout_internal
+    - abseil/time/time
+  - abseil/time (0.20200225.0):
+    - abseil/time/internal (= 0.20200225.0)
+    - abseil/time/time (= 0.20200225.0)
+  - abseil/time/internal (0.20200225.0):
+    - abseil/time/internal/cctz (= 0.20200225.0)
+  - abseil/time/internal/cctz (0.20200225.0):
+    - abseil/time/internal/cctz/civil_time (= 0.20200225.0)
+    - abseil/time/internal/cctz/time_zone (= 0.20200225.0)
+  - abseil/time/internal/cctz/civil_time (0.20200225.0):
+    - abseil/base/config
+  - abseil/time/internal/cctz/time_zone (0.20200225.0):
+    - abseil/base/config
+    - abseil/time/internal/cctz/civil_time
+  - abseil/time/time (0.20200225.0):
+    - abseil/base/base
+    - abseil/base/core_headers
+    - abseil/base/raw_logging_internal
+    - abseil/numeric/int128
+    - abseil/strings/strings
+    - abseil/time/internal/cctz/civil_time
+    - abseil/time/internal/cctz/time_zone
+  - abseil/types (0.20200225.0):
+    - abseil/types/any (= 0.20200225.0)
+    - abseil/types/bad_any_cast (= 0.20200225.0)
+    - abseil/types/bad_any_cast_impl (= 0.20200225.0)
+    - abseil/types/bad_optional_access (= 0.20200225.0)
+    - abseil/types/bad_variant_access (= 0.20200225.0)
+    - abseil/types/compare (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - abseil/types/span (= 0.20200225.0)
+    - abseil/types/variant (= 0.20200225.0)
+  - abseil/types/any (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/types/bad_any_cast
+    - abseil/utility/utility
+  - abseil/types/bad_any_cast (0.20200225.0):
+    - abseil/base/config
+    - abseil/types/bad_any_cast_impl
+  - abseil/types/bad_any_cast_impl (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/bad_optional_access (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/bad_variant_access (0.20200225.0):
+    - abseil/base/config
+    - abseil/base/raw_logging_internal
+  - abseil/types/compare (0.20200225.0):
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+  - abseil/types/optional (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/memory/memory
+    - abseil/meta/type_traits
+    - abseil/types/bad_optional_access
+    - abseil/utility/utility
+  - abseil/types/span (0.20200225.0):
+    - abseil/algorithm/algorithm
+    - abseil/base/core_headers
+    - abseil/base/throw_delegate
+    - abseil/meta/type_traits
+  - abseil/types/variant (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/base/core_headers
+    - abseil/meta/type_traits
+    - abseil/types/bad_variant_access
+    - abseil/utility/utility
+  - abseil/utility/utility (0.20200225.0):
+    - abseil/base/base_internal
+    - abseil/base/config
+    - abseil/meta/type_traits
+  - BoringSSL-GRPC (0.0.7):
+    - BoringSSL-GRPC/Implementation (= 0.0.7)
+    - BoringSSL-GRPC/Interface (= 0.0.7)
+  - BoringSSL-GRPC/Implementation (0.0.7):
+    - BoringSSL-GRPC/Interface (= 0.0.7)
+  - BoringSSL-GRPC/Interface (0.0.7)
+  - Firebase/Auth (8.8.0):
+    - Firebase/CoreOnly
+    - FirebaseAuth (~> 8.8.0)
+  - Firebase/CoreOnly (8.8.0):
+    - FirebaseCore (= 8.8.0)
+  - Firebase/Firestore (8.8.0):
+    - Firebase/CoreOnly
+    - FirebaseFirestore (~> 8.8.0)
+  - FirebaseAuth (8.8.0):
+    - FirebaseCore (~> 8.0)
+    - GoogleUtilities/AppDelegateSwizzler (~> 7.4)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GTMSessionFetcher/Core (~> 1.5)
+  - FirebaseCore (8.8.0):
+    - FirebaseCoreDiagnostics (~> 8.0)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GoogleUtilities/Logger (~> 7.4)
+  - FirebaseCoreDiagnostics (8.8.0):
+    - GoogleDataTransport (~> 9.0)
+    - GoogleUtilities/Environment (~> 7.4)
+    - GoogleUtilities/Logger (~> 7.4)
+    - nanopb (~> 2.30908.0)
+  - FirebaseFirestore (8.8.0):
+    - abseil/algorithm (= 0.20200225.0)
+    - abseil/base (= 0.20200225.0)
+    - abseil/container/flat_hash_map (= 0.20200225.0)
+    - abseil/memory (= 0.20200225.0)
+    - abseil/meta (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/time (= 0.20200225.0)
+    - abseil/types (= 0.20200225.0)
+    - FirebaseCore (~> 8.0)
+    - "gRPC-C++ (~> 1.28.0)"
+    - leveldb-library (~> 1.22)
+    - nanopb (~> 2.30908.0)
+  - GoogleDataTransport (9.1.2):
+    - GoogleUtilities/Environment (~> 7.2)
+    - nanopb (~> 2.30908.0)
+    - PromisesObjC (< 3.0, >= 1.2)
+  - GoogleUtilities/AppDelegateSwizzler (7.6.0):
+    - GoogleUtilities/Environment
+    - GoogleUtilities/Logger
+    - GoogleUtilities/Network
+  - GoogleUtilities/Environment (7.6.0):
+    - PromisesObjC (< 3.0, >= 1.2)
+  - GoogleUtilities/Logger (7.6.0):
+    - GoogleUtilities/Environment
+  - GoogleUtilities/Network (7.6.0):
+    - GoogleUtilities/Logger
+    - "GoogleUtilities/NSData+zlib"
+    - GoogleUtilities/Reachability
+  - "GoogleUtilities/NSData+zlib (7.6.0)"
+  - GoogleUtilities/Reachability (7.6.0):
+    - GoogleUtilities/Logger
+  - "gRPC-C++ (1.28.2)":
+    - "gRPC-C++/Implementation (= 1.28.2)"
+    - "gRPC-C++/Interface (= 1.28.2)"
+  - "gRPC-C++/Implementation (1.28.2)":
+    - abseil/container/inlined_vector (= 0.20200225.0)
+    - abseil/memory/memory (= 0.20200225.0)
+    - abseil/strings/str_format (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - "gRPC-C++/Interface (= 1.28.2)"
+    - gRPC-Core (= 1.28.2)
+  - "gRPC-C++/Interface (1.28.2)"
+  - gRPC-Core (1.28.2):
+    - gRPC-Core/Implementation (= 1.28.2)
+    - gRPC-Core/Interface (= 1.28.2)
+  - gRPC-Core/Implementation (1.28.2):
+    - abseil/container/inlined_vector (= 0.20200225.0)
+    - abseil/memory/memory (= 0.20200225.0)
+    - abseil/strings/str_format (= 0.20200225.0)
+    - abseil/strings/strings (= 0.20200225.0)
+    - abseil/types/optional (= 0.20200225.0)
+    - BoringSSL-GRPC (= 0.0.7)
+    - gRPC-Core/Interface (= 1.28.2)
+  - gRPC-Core/Interface (1.28.2)
+  - GTMSessionFetcher/Core (1.7.0)
+  - leveldb-library (1.22.1)
+  - nanopb (2.30908.0):
+    - nanopb/decode (= 2.30908.0)
+    - nanopb/encode (= 2.30908.0)
+  - nanopb/decode (2.30908.0)
+  - nanopb/encode (2.30908.0)
+  - PromisesObjC (2.0.0)
+
+DEPENDENCIES:
+  - Firebase/Auth
+  - Firebase/Firestore
+
+SPEC REPOS:
+  trunk:
+    - abseil
+    - BoringSSL-GRPC
+    - Firebase
+    - FirebaseAuth
+    - FirebaseCore
+    - FirebaseCoreDiagnostics
+    - FirebaseFirestore
+    - GoogleDataTransport
+    - GoogleUtilities
+    - "gRPC-C++"
+    - gRPC-Core
+    - GTMSessionFetcher
+    - leveldb-library
+    - nanopb
+    - PromisesObjC
+
+SPEC CHECKSUMS:
+  abseil: 6c8eb7892aefa08d929b39f9bb108e5367e3228f
+  BoringSSL-GRPC: 8edf627ee524575e2f8d19d56f068b448eea3879
+  Firebase: 629510f1a9ddb235f3a7c5c8ceb23ba887f0f814
+  FirebaseAuth: bcf0adeff88bda5dcb3beeabe5760f1226ab7b2f
+  FirebaseCore: 98b29e3828f0a53651c363937a7f7d92a19f1ba2
+  FirebaseCoreDiagnostics: fe77f42da6329d6d83d21fd9d621a6b704413bfc
+  FirebaseFirestore: 29baf05d5e7e0d5003eb34e5805d92b9858b36d4
+  GoogleDataTransport: 629c20a4d363167143f30ea78320d5a7eb8bd940
+  GoogleUtilities: 684ee790a24f73ebb2d1d966e9711c203f2a4237
+  "gRPC-C++": 13d8ccef97d5c3c441b7e3c529ef28ebee86fad2
+  gRPC-Core: 4afa11bfbedf7cdecd04de535a9e046893404ed5
+  GTMSessionFetcher: 43748f93435c2aa068b1cbe39655aaf600652e91
+  leveldb-library: 50c7b45cbd7bf543c81a468fe557a16ae3db8729
+  nanopb: a0ba3315591a9ae0a16a309ee504766e90db0c96
+  PromisesObjC: 68159ce6952d93e17b2dfe273b8c40907db5ba58
+
+PODFILE CHECKSUM: 884119ce57b2c4c5e652372014e8c643889a117f
+
+COCOAPODS: 1.11.2
diff --git a/ChattingApp 000/Pods/Pods.xcodeproj/project.pbxproj b/ChattingApp 000/Pods/Pods.xcodeproj/project.pbxproj
new file mode 100644
index 0000000..e757ebf
--- /dev/null
+++ b/ChattingApp 000/Pods/Pods.xcodeproj/project.pbxproj	
@@ -0,0 +1,21554 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 55;
+	objects = {
+
+/* Begin PBXAggregateTarget section */
+		072CEA044D2EF26F03496D5996BBF59F /* Firebase */ = {
+			isa = PBXAggregateTarget;
+			buildConfigurationList = B0D9AA15D3016C98FFD7A2309A2E06B8 /* Build configuration list for PBXAggregateTarget "Firebase" */;
+			buildPhases = (
+			);
+			dependencies = (
+				3BA74B6E99A3C0030BEAFB749A7DBBC0 /* PBXTargetDependency */,
+				FF990825FC238265A87558350BBB6745 /* PBXTargetDependency */,
+				20D8A8BF676A80C03E393EB314270793 /* PBXTargetDependency */,
+			);
+			name = Firebase;
+			productName = Firebase;
+		};
+/* End PBXAggregateTarget section */
+
+/* Begin PBXBuildFile section */
+		0009DDE2C259439A839000F6ED42284D /* load_balancer.upb.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA12AFA420D4C8B84280C47AD27F4F5 /* load_balancer.upb.h */; };
+		002C2591B0D129B4AD6149524F388890 /* route_components.upb.c in Sources */ = {isa = PBXBuildFile; fileRef = 8EA89410173D360C4E1D0F3A43759D7C /* route_components.upb.c */; settings = {COMPILER_FLAGS = "-DGRPC_ARES=0 -Wno-comma -DGRPC_SHADOW_BORINGSSL_SYMBOLS -fno-objc-arc"; }; };
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+				3AF3C9C15D4C75314409A3DBAAF78433 /* lb_policy.h */,
+				038A4EBAA88FDAFDF688F98C7057E7D0 /* lb_policy_factory.h */,
+				A8EA8A0D9B6E1425FA924D5A8BC4F2F6 /* lb_policy_registry.h */,
+				E07C407B1027908B2074466F5A0CCFDD /* lds.upb.h */,
+				9F51956A88AADDC93FF65FE69ACD9574 /* listener.upb.h */,
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+				71C1EF5A72F5B09D517E78C24F49C12C /* listener_components.upb.h */,
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+				68D3F83F5724337E54806F917E814DF6 /* load_balancer_api.h */,
+				DC7A3138FB87589191707D16D4BF34E6 /* load_file.h */,
+				41BFBFC76CD005307B4EDC67D40DBA4C /* load_report.upb.h */,
+				02E9DB6964EAC92EF3A8937CC3909B7F /* load_system_roots.h */,
+				4A5C0D4817EC744EB2B740AB7144617F /* load_system_roots_linux.h */,
+				94408BFD524801C017BDB23F205A8CBF /* local_credentials.h */,
+				D00FCB626CC18A9EE877A8165230BE1B /* local_security_connector.h */,
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+				6FFC9DAFF8C3A94F65EE46688E587B96 /* local_transport_security.h */,
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+				AB5D3C800FF246031449BD52264F2170 /* lrs.upb.h */,
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+				31DABA3C799F44DAA5D77CB9341E4E79 /* max_age_filter.h */,
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+				DD5DA1F2C4F4C7806178A842F788F840 /* message_compress.h */,
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+				B3800E23F05158C1EF0C512E5381F34A /* murmur_hash.h */,
+				4554ABAA38BE7B8C36E1075E41773D7C /* nameser.h */,
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+				6CFA5946F255684949CF746F6FFB2B24 /* orphanable.h */,
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+				A29157C1CCA0BFB58A93FC34E002ED3F /* pid_controller.h */,
+				4CBE497FBECEE753263249E26A6D58BD /* plugin_credentials.h */,
+				EAC66FB56C5C0D5D8D02C1A0FFA469CA /* polling_entity.h */,
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+				E31E7E6123859D6D0A7ACE24829E4F27 /* pollset_set_windows.h */,
+				8CED8F5D4DE5C89324AC5472AA3A2144 /* pollset_windows.h */,
+				2AC30F6E962CCC33E27D5D992C2CC04B /* port.h */,
+				51F220F42A603F13142944AE3CC8B1CC /* port_def.inc */,
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+				785DC74B352446FEB697A418D60FC2E6 /* proxy_mapper.h */,
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+				4889819855CF55BA7FF9926FA8ACEB34 /* rds.upb.h */,
+				9DE2CC2BADBC177C8FDF07DEB47A25EA /* ref_counted.h */,
+				49282B04254B68567D13D1CC4A44FFBC /* ref_counted_ptr.h */,
+				F2CAD358AF4EE3671E900A7C6BA8E6AB /* regex.upb.h */,
+				D4452B478F200CCBB9CAA3964831D0A5 /* resolve_address.h */,
+				51B1D5F650EBD14E1AE50A30D192068C /* resolve_address_custom.h */,
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+				E4BD8C169122DFFF90D631D51F8AA71F /* resource.upb.h */,
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+				56BAAB6CB62A043B0483F581C8941EED /* scoped_route.upb.h */,
+				D42A3534BADDEC8068D72E01414AD045 /* secure_auth_context.cc */,
+				85799FC1D62555D528DE78DF9D430801 /* secure_auth_context.h */,
+				73C275D4406645CB65FFD52E98C89B2E /* secure_channel_arguments.cc */,
+				8C818D43EDBF949D92D9C95C2D48384C /* secure_create_auth_context.cc */,
+				E11408565DB845E08271F9AFF68F14EB /* secure_credentials.cc */,
+				41F97F1CB9C71A93633A6A4FBA993730 /* secure_credentials.h */,
+				AE7A2F24FFF8A36B2A9BF3DCFCE714D6 /* secure_endpoint.h */,
+				D3DED2F49FA88B9FF166A27CB4E7874E /* secure_server_credentials.cc */,
+				28CE1048A3A3B4928D69DDDAF7EF4144 /* secure_server_credentials.h */,
+				652EB757CDDE4918C6FC74F0113D8A8D /* security_connector.h */,
+				BCFDAC46A9071A192DFC0AAC5276CE7B /* security_context.h */,
+				233C525460DCF2A7AAE7AF0D292E81D1 /* security_handshaker.h */,
+				78C9D4140A35CC21F78889801D3D0C87 /* semantic_version.upb.h */,
+				4CDF6DD2FC23E43A7C1EF5869700CB91 /* sensitive.upb.h */,
+				EBF043DEF6CD83E425EDF92C89338AD8 /* server.h */,
+				72BDED7F1B11077F4E7378615DB4D0D7 /* server_address.h */,
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+				BE60EEEE59BCB5757534B7BC259CBC5E /* slice_hash_table.h */,
+				3B4DDE2152BCFA58A079185B0C4006FC /* slice_internal.h */,
+				E771624C2535F92E569824D6AE082438 /* slice_string_helpers.h */,
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+				32FD5810D97FB3B28611933CFAAC9CB1 /* slice_weak_hash_table.h */,
+				6A049855D3A954DD84E70BFA33A6FBEF /* sockaddr.h */,
+				BB075E8F88B0FD6BE062C429735BED3B /* sockaddr_custom.h */,
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+				E426336688A611D3CE85D384DA2B2109 /* sockaddr_utils.h */,
+				D21FB1DE6CD4F26459A97F2E969018A1 /* sockaddr_windows.h */,
+				D438B9A0A1326D704E76203CC7C2D2A3 /* socket_factory_posix.h */,
+				5BF7EF4A74E3F14AA7B4D5959F28C093 /* socket_mutator.h */,
+				385A3F924B2BC20387D48F73E0105ED0 /* socket_utils.h */,
+				5FE53985C389AFFF80CFE0315C7ABB9F /* socket_utils_posix.h */,
+				BBFDFB1713D8434BFA776BB87E57D366 /* socket_windows.h */,
+				9DEA6536445CBD52D71F8703948BF718 /* spinlock.h */,
+				9F36B80F59CF9EB610AC1EBFF2065FEE /* srds.upb.h */,
+				9339423B35B221544A44E96F96A99167 /* ssl_credentials.h */,
+				6CD02D12DAA7785FED1655DBA4554784 /* ssl_security_connector.h */,
+				F52FF039A27CA970C4279E56659748AB /* ssl_session.h */,
+				CE80209F4E2F6D6160BF474BB87C3F9C /* ssl_session_cache.h */,
+				2BC7AE5BEC35638E17D8C1A0EC6718C8 /* ssl_transport_security.h */,
+				2F07E2336578572E33712271B149F278 /* ssl_types.h */,
+				1E6338D13B1A59D3C7661F7A743A2BD9 /* ssl_utils.h */,
+				383C42D306BA7FEECDD83058B83B916D /* ssl_utils_config.h */,
+				D01DE82837AFE4C261272A03FF8EC43A /* static_metadata.h */,
+				7D3268A64D36D1DE9949AB8A7B5DA895 /* stats.h */,
+				D90FF7F23635ECA0917B2DF8307A39F9 /* stats_data.h */,
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+				D8DBCD8A52EA17FFA7E0E5543DEA111E /* status_util.h */,
+				CDCD37ECD1B4784AE5EAABECD1628496 /* stream_compression.h */,
+				74BF5F91D55A283428EBC9576EE7A26D /* stream_compression_gzip.h */,
+				668FDF89ED6C1E57818581587BBFDC63 /* stream_compression_identity.h */,
+				1E2C39B97EF15A61E76329033EEC9406 /* stream_map.h */,
+				9F0EFFB53C14D85578B3935FEDA4518D /* string.h */,
+				04EEC8FBC39DA2FC1BC36A0350EECC05 /* string.upb.h */,
+				3D3C824DE4B2F1B47A223149EA50CEEC /* string_ref.cc */,
+				E7974EF174D074C0ADA87DB6CF5C0587 /* string_view.h */,
+				072A62331A2EB568BBED8D8BE9FD58B5 /* string_windows.h */,
+				C5C998B2CA1B33ED00F1C0D3A1C21DB6 /* struct.upb.h */,
+				3CF955CBFCE1BC3DAC4E3306C7819EA1 /* subchannel.h */,
+				19F76E3745B22030869ACAFF67F5333B /* subchannel_interface.h */,
+				A2FCE1C68218D6FA6381156109324F4B /* subchannel_list.h */,
+				217EB7A64ED661B85836024A4889FFFD /* subchannel_pool_interface.h */,
+				26F31EFD566411873DC42A016139AA85 /* sync.h */,
+				316E6733F7130494197420BB9A4DF942 /* sys_epoll_wrapper.h */,
+				0E208942A29B5DEF23BB7A123090618F /* table.int.h */,
+				C2796DE075E12EF66DAD3985783283A8 /* target_authority_table.h */,
+				5EECDA4FDDE66325A373D290C2EB4960 /* tcp_client.h */,
+				AE50B2FF01362F1EAC7F60323A53B626 /* tcp_client_posix.h */,
+				7C321B5D3BC7DBF293E0CD370BBCAC68 /* tcp_custom.h */,
+				76E181E71FAD9A74A8147264508FFA10 /* tcp_posix.h */,
+				E0CB203AD5860CDA46EE411881CAEFC0 /* tcp_server.h */,
+				32B920A9A8906F831D887358E6DEF6BD /* tcp_server_utils_posix.h */,
+				AC5DB67ECD899D14397195C3BB8990F6 /* tcp_windows.h */,
+				A7EC459D960CF33D3322A87C7B97EE57 /* thd.h */,
+				0C54E33F2F715058CB07B614EDA8C32E /* thread_manager.cc */,
+				FE791ABACE45D78A4E33499A62580AC0 /* thread_manager.h */,
+				21D1A91CA70B1059D0018DAF1F14F2F6 /* thread_pool_interface.h */,
+				43FDF8F38D6CBE0CAD11675C105EBE7F /* threadpool.h */,
+				683203952E7EA2874F9EB7D5D715DA41 /* time_averaged_stats.h */,
+				5943301654FEEEF2949CA74A12DE9A94 /* time_cc.cc */,
+				E2EA80AC936FE524E25CAC6E61D083A2 /* time_precise.h */,
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+				DEE1FC8CFCE5B0DD96CF6B4EE68EC51D /* timer.h */,
+				0DB67CEEFE63316344B75D230BF4715D /* timer_custom.h */,
+				D27535C1AFD0DCD6628F3C3687945B07 /* timer_heap.h */,
+				618939970C371F4065D0ECB18AB33FA3 /* timer_manager.h */,
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+				E5A6A8112703E4E5CE0FDA0477E80484 /* timestamp.upb.h */,
+				B488C43D73A23D4BA1B84E2F4E7CA493 /* tls.h */,
+				DD1BDBC677BF0A8D90580DF89826D0C8 /* tls_credentials.h */,
+				EB76C86B4D9F8F6666942562E5E010B2 /* tls_credentials_options.cc */,
+				8DE028AC6F4B27894C8318B2269182CE /* tls_credentials_options_util.cc */,
+				8FEDFD204542C94CC511F59733B944F2 /* tls_credentials_options_util.h */,
+				38310535806D90A8F67C0896879363A2 /* tls_gcc.h */,
+				1ECE25BB0085226447266B5EE23E856C /* tls_msvc.h */,
+				919BBD2CACEF18DC86E8E6613D707527 /* tls_pthread.h */,
+				E77EB541374AA39F73B4816564ADF7B2 /* tls_security_connector.h */,
+				2D2DAAC37A15C9873F121DCC2C83C46E /* tmpfile.h */,
+				5B8CDF3A3322DCC42E6CA1F34DCC82E4 /* trace.h */,
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+				64DB770C358F5ADBEBE304AEA8689406 /* transport_impl.h */,
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+				5B4E9081D2293CAE8F71662A47889968 /* transport_security_interface.h */,
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+				954F41FB551BC0906BCF100CC56CAFE8 /* udp_listener_config.upb.h */,
+				D2586DBCA986F3A634B8BB0281B596F2 /* udp_server.h */,
+				722C1A63CE8C0686D34773C61D7CC48B /* unix_sockets_posix.h */,
+				886AF200D62AD78BCA8E5FC926C43217 /* upb.h */,
+				A29E15E4E9331AA94037FF459BD2A056 /* uri_parser.h */,
+				67ECB02D57BE9DCD3A4D11679B0FA7EE /* useful.h */,
+				68619EA3F93498065654D87E4DC2E30C /* validate.upb.h */,
+				71F862E938C540D174B5241C7B910498 /* validate_metadata.h */,
+				93BC5F697AEFC0C35798859EF7924378 /* validate_service_config.cc */,
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+				FF3990E26FFF5FB123BE6C39899E4E52 /* wakeup_fd_pipe.h */,
+				54FF3071BA9D8D71C5C0A7F90E8B7108 /* wakeup_fd_posix.h */,
+				C1A4ECD733A59EBC476F5CC851D3B49E /* work_serializer.h */,
+				66AB3E04AC27EC7D4D765CBEE2251447 /* workaround_cronet_compression_filter.h */,
+				59641AE33281353258019FA82D98856C /* workaround_utils.h */,
+				183195E5E75E55E38FA24D2FB91A9E63 /* wrappers.upb.h */,
+				B7CBAB82B59CCA1D13B0DE13D563CB07 /* xds.h */,
+				114A93071EA211D8FAF71C7638181D07 /* xds_api.h */,
+				CF1D44D0A49A3FF2B7B9ED946EAD8C77 /* xds_bootstrap.h */,
+				0A9B23C59DC3D9B767F17B2388B2285C /* xds_channel.h */,
+				898FCC75EC21E95E4D4773875D829AE5 /* xds_channel_args.h */,
+				5A51708EB3AF928EEC0F313A7FC3BD99 /* xds_client.h */,
+				171C0297118FFDEFEEFACD17D1120C81 /* xds_client_stats.h */,
+			);
+			name = Implementation;
+			sourceTree = "<group>";
+		};
+		F26090E1438D79369AE5DB393DD89880 /* inlined_vector_internal */ = {
+			isa = PBXGroup;
+			children = (
+				F77619F9FE557FE51EEEDCB5F738B456 /* inlined_vector.h */,
+			);
+			name = inlined_vector_internal;
+			sourceTree = "<group>";
+		};
+		F2C86018C14F45B79F80917764CE7D1E /* meta */ = {
+			isa = PBXGroup;
+			children = (
+				8A504986CDACA5D02A1CAB3B4ED26D74 /* type_traits */,
+			);
+			name = meta;
+			sourceTree = "<group>";
+		};
+		F2EA629DD9F3C31FAD3A3D37C8CDFF2C /* types */ = {
+			isa = PBXGroup;
+			children = (
+				9B68BFA8E92D59B618B884F8ABB27FCD /* any */,
+				927917C2D56FB983683B57E7B4C56C41 /* bad_any_cast */,
+				FFF1EC90F15E28748F0B07AE5CC40816 /* bad_any_cast_impl */,
+				8CD9AAB0F7C9C6AA2082E387B9BF7A24 /* bad_optional_access */,
+				B9FC8A045A4EEB358D91DE9FEF82589D /* bad_variant_access */,
+				6740845D2F4384D7F20709B6720EB139 /* compare */,
+				F5D434CF4D539C100312428E967B707D /* optional */,
+				47E62B319A2922E8546618A1CF46A4F6 /* span */,
+				765360FD354840A75A2237363F67ACD6 /* variant */,
+			);
+			name = types;
+			sourceTree = "<group>";
+		};
+		F5D434CF4D539C100312428E967B707D /* optional */ = {
+			isa = PBXGroup;
+			children = (
+				9ED9B1BE73C9E9F1EA371DD2E97108FD /* optional.h */,
+				3F526133CE94BE2E31583073A056810D /* optional.h */,
+			);
+			name = optional;
+			sourceTree = "<group>";
+		};
+		F9C138E5546C0AB9EF908A33C639EE9E /* Core */ = {
+			isa = PBXGroup;
+			children = (
+				51FDDABB331CFCF95C1E6B2575DEE27B /* GTMSessionFetcher.h */,
+				27C292AC4762AF725B75176D0D1E71E7 /* GTMSessionFetcher.m */,
+				ACFC7FDD041F6D85E0B32642A76851E7 /* GTMSessionFetcherLogging.h */,
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diff --git a/ChattingApp 000/Pods/PromisesObjC/LICENSE b/ChattingApp 000/Pods/PromisesObjC/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
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+
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+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
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+
+   Unless required by applicable law or agreed to in writing, software
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diff --git a/ChattingApp 000/Pods/PromisesObjC/README.md b/ChattingApp 000/Pods/PromisesObjC/README.md
new file mode 100644
index 0000000..e0e65b7
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/README.md	
@@ -0,0 +1,60 @@
+[![Apache
+License](https://img.shields.io/github/license/google/promises.svg)](LICENSE)
+[![Travis](https://api.travis-ci.org/google/promises.svg?branch=master)](https://travis-ci.org/google/promises)
+[![Gitter Chat](https://badges.gitter.im/google/promises.svg)](https://gitter.im/google/promises)
+
+![Platforms](https://img.shields.io/badge/platforms-macOS%20%7C%20iOS%20%7C%20tvOS%20%7C%20watchOS-blue.svg?longCache=true&style=flat)
+![Languages](https://img.shields.io/badge/languages-Swift%20%7C%20ObjC-orange.svg?longCache=true&style=flat)
+![Package Managers](https://img.shields.io/badge/supports-Bazel%20%7C%20SwiftPM%20%7C%20CocoaPods%20%7C%20Carthage-yellow.svg?longCache=true&style=flat)
+
+# Promises
+
+Promises is a modern framework that provides a synchronization construct for
+Objective-C and Swift to facilitate writing asynchronous code.
+
+*   [Introduction](g3doc/index.md)
+    *   [The problem with async
+        code](g3doc/index.md#the-problem-with-async-code)
+    *   [Promises to the rescue](g3doc/index.md#promises-to-the-rescue)
+    *   [What is a promise?](g3doc/index.md#what-is-a-promise)
+*   [Framework](g3doc/index.md#framework)
+    *   [Features](g3doc/index.md#features)
+    *   [Benchmark](g3doc/index.md#benchmark)
+*   [Getting started](g3doc/index.md#getting-started)
+    *   [Add dependency](g3doc/index.md#add-dependency)
+    *   [Import](g3doc/index.md#import)
+    *   [Adopt](g3doc/index.md#adopt)
+*   [Basics](g3doc/index.md#basics)
+    *   [Creating promises](g3doc/index.md#creating-promises)
+        *   [Async](g3doc/index.md#async)
+        *   [Do](g3doc/index.md#do)
+        *   [Pending](g3doc/index.md#pending)
+        *   [Resolved](g3doc/index.md#create-a-resolved-promise)
+    *   [Observing fulfillment](g3doc/index.md#observing-fulfillment)
+        *   [Then](g3doc/index.md#then)
+    *   [Observing rejection](g3doc/index.md#observing-rejection)
+        *   [Catch](g3doc/index.md#catch)
+*   [Extensions](g3doc/index.md#extensions)
+    *   [All](g3doc/index.md#all)
+    *   [Always](g3doc/index.md#always)
+    *   [Any](g3doc/index.md#any)
+    *   [AwaitPromise](g3doc/index.md#awaitpromise)
+    *   [Delay](g3doc/index.md#delay)
+    *   [Race](g3doc/index.md#race)
+    *   [Recover](g3doc/index.md#recover)
+    *   [Reduce](g3doc/index.md#reduce)
+    *   [Retry](g3doc/index.md#retry)
+    *   [Timeout](g3doc/index.md#timeout)
+    *   [Validate](g3doc/index.md#validate)
+    *   [Wrap](g3doc/index.md#wrap)
+*   [Advanced topics](g3doc/index.md#advanced-topics)
+    *   [Default dispatch queue](g3doc/index.md#default-dispatch-queue)
+    *   [Ownership and retain
+        cycles](g3doc/index.md#ownership-and-retain-cycles)
+    *   [Testing](g3doc/index.md#testing)
+    *   [Objective-C <-> Swift
+        interoperability](g3doc/index.md#objective-c---swift-interoperability)
+    *   [Dot-syntax in Objective-C](g3doc/index.md#dot-syntax-in-objective-c)
+*   [Anti-patterns](g3doc/index.md#anti-patterns)
+    *   [Broken chain](g3doc/index.md#broken-chain)
+    *   [Nested promises](g3doc/index.md#nested-promises)
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+All.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+All.m
new file mode 100644
index 0000000..c21f30e
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+All.m	
@@ -0,0 +1,86 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+All.h"
+
+#import "FBLPromise+Async.h"
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (AllAdditions)
+
++ (FBLPromise<NSArray *> *)all:(NSArray *)promises {
+  return [self onQueue:self.defaultDispatchQueue all:promises];
+}
+
++ (FBLPromise<NSArray *> *)onQueue:(dispatch_queue_t)queue all:(NSArray *)allPromises {
+  NSParameterAssert(queue);
+  NSParameterAssert(allPromises);
+
+  if (allPromises.count == 0) {
+    return [[FBLPromise alloc] initWithResolution:@[]];
+  }
+  NSMutableArray *promises = [allPromises mutableCopy];
+  return [FBLPromise
+      onQueue:queue
+        async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+          for (NSUInteger i = 0; i < promises.count; ++i) {
+            id promise = promises[i];
+            if ([promise isKindOfClass:self]) {
+              continue;
+            } else if ([promise isKindOfClass:[NSError class]]) {
+              reject(promise);
+              return;
+            } else {
+              [promises replaceObjectAtIndex:i
+                                  withObject:[[FBLPromise alloc] initWithResolution:promise]];
+            }
+          }
+          for (FBLPromise *promise in promises) {
+            [promise observeOnQueue:queue
+                fulfill:^(id __unused _) {
+                  // Wait until all are fulfilled.
+                  for (FBLPromise *promise in promises) {
+                    if (!promise.isFulfilled) {
+                      return;
+                    }
+                  }
+                  // If called multiple times, only the first one affects the result.
+                  fulfill([promises valueForKey:NSStringFromSelector(@selector(value))]);
+                }
+                reject:^(NSError *error) {
+                  reject(error);
+                }];
+          }
+        }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_AllAdditions)
+
++ (FBLPromise<NSArray *> * (^)(NSArray *))all {
+  return ^(NSArray<FBLPromise *> *promises) {
+    return [self all:promises];
+  };
+}
+
++ (FBLPromise<NSArray *> * (^)(dispatch_queue_t, NSArray *))allOn {
+  return ^(dispatch_queue_t queue, NSArray<FBLPromise *> *promises) {
+    return [self onQueue:queue all:promises];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Always.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Always.m
new file mode 100644
index 0000000..6927442
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Always.m	
@@ -0,0 +1,58 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Always.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (AlwaysAdditions)
+
+- (FBLPromise *)always:(FBLPromiseAlwaysWorkBlock)work {
+  return [self onQueue:FBLPromise.defaultDispatchQueue always:work];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue always:(FBLPromiseAlwaysWorkBlock)work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self chainOnQueue:queue
+      chainedFulfill:^id(id value) {
+        work();
+        return value;
+      }
+      chainedReject:^id(NSError *error) {
+        work();
+        return error;
+      }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_AlwaysAdditions)
+
+- (FBLPromise * (^)(FBLPromiseAlwaysWorkBlock))always {
+  return ^(FBLPromiseAlwaysWorkBlock work) {
+    return [self always:work];
+  };
+}
+
+- (FBLPromise * (^)(dispatch_queue_t, FBLPromiseAlwaysWorkBlock))alwaysOn {
+  return ^(dispatch_queue_t queue, FBLPromiseAlwaysWorkBlock work) {
+    return [self onQueue:queue always:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Any.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Any.m
new file mode 100644
index 0000000..e101c98
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Any.m	
@@ -0,0 +1,112 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Any.h"
+
+#import "FBLPromise+Async.h"
+#import "FBLPromisePrivate.h"
+
+static NSArray *FBLPromiseCombineValuesAndErrors(NSArray<FBLPromise *> *promises) {
+  NSMutableArray *combinedValuesAndErrors = [[NSMutableArray alloc] init];
+  for (FBLPromise *promise in promises) {
+    if (promise.isFulfilled) {
+      [combinedValuesAndErrors addObject:promise.value ?: [NSNull null]];
+      continue;
+    }
+    if (promise.isRejected) {
+      [combinedValuesAndErrors addObject:promise.error];
+      continue;
+    }
+    assert(!promise.isPending);
+  };
+  return combinedValuesAndErrors;
+}
+
+@implementation FBLPromise (AnyAdditions)
+
++ (FBLPromise<NSArray *> *)any:(NSArray *)promises {
+  return [self onQueue:FBLPromise.defaultDispatchQueue any:promises];
+}
+
++ (FBLPromise<NSArray *> *)onQueue:(dispatch_queue_t)queue any:(NSArray *)anyPromises {
+  NSParameterAssert(queue);
+  NSParameterAssert(anyPromises);
+
+  if (anyPromises.count == 0) {
+    return [[FBLPromise alloc] initWithResolution:@[]];
+  }
+  NSMutableArray *promises = [anyPromises mutableCopy];
+  return [FBLPromise
+      onQueue:queue
+        async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+          for (NSUInteger i = 0; i < promises.count; ++i) {
+            id promise = promises[i];
+            if ([promise isKindOfClass:self]) {
+              continue;
+            } else {
+              [promises replaceObjectAtIndex:i
+                                  withObject:[[FBLPromise alloc] initWithResolution:promise]];
+            }
+          }
+          for (FBLPromise *promise in promises) {
+            [promise observeOnQueue:queue
+                fulfill:^(id __unused _) {
+                  // Wait until all are resolved.
+                  for (FBLPromise *promise in promises) {
+                    if (promise.isPending) {
+                      return;
+                    }
+                  }
+                  // If called multiple times, only the first one affects the result.
+                  fulfill(FBLPromiseCombineValuesAndErrors(promises));
+                }
+                reject:^(NSError *error) {
+                  BOOL atLeastOneIsFulfilled = NO;
+                  for (FBLPromise *promise in promises) {
+                    if (promise.isPending) {
+                      return;
+                    }
+                    if (promise.isFulfilled) {
+                      atLeastOneIsFulfilled = YES;
+                    }
+                  }
+                  if (atLeastOneIsFulfilled) {
+                    fulfill(FBLPromiseCombineValuesAndErrors(promises));
+                  } else {
+                    reject(error);
+                  }
+                }];
+          }
+        }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_AnyAdditions)
+
++ (FBLPromise<NSArray *> * (^)(NSArray *))any {
+  return ^(NSArray *promises) {
+    return [self any:promises];
+  };
+}
+
++ (FBLPromise<NSArray *> * (^)(dispatch_queue_t, NSArray *))anyOn {
+  return ^(dispatch_queue_t queue, NSArray *promises) {
+    return [self onQueue:queue any:promises];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Async.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Async.m
new file mode 100644
index 0000000..249158c
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Async.m	
@@ -0,0 +1,70 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Async.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (AsyncAdditions)
+
++ (instancetype)async:(FBLPromiseAsyncWorkBlock)work {
+  return [self onQueue:self.defaultDispatchQueue async:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue async:(FBLPromiseAsyncWorkBlock)work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  dispatch_group_async(FBLPromise.dispatchGroup, queue, ^{
+    work(
+        ^(id __nullable value) {
+          if ([value isKindOfClass:[FBLPromise class]]) {
+            [(FBLPromise *)value observeOnQueue:queue
+                fulfill:^(id __nullable value) {
+                  [promise fulfill:value];
+                }
+                reject:^(NSError *error) {
+                  [promise reject:error];
+                }];
+          } else {
+            [promise fulfill:value];
+          }
+        },
+        ^(NSError *error) {
+          [promise reject:error];
+        });
+  });
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_AsyncAdditions)
+
++ (FBLPromise* (^)(FBLPromiseAsyncWorkBlock))async {
+  return ^(FBLPromiseAsyncWorkBlock work) {
+    return [self async:work];
+  };
+}
+
++ (FBLPromise* (^)(dispatch_queue_t, FBLPromiseAsyncWorkBlock))asyncOn {
+  return ^(dispatch_queue_t queue, FBLPromiseAsyncWorkBlock work) {
+    return [self onQueue:queue async:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Await.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Await.m
new file mode 100644
index 0000000..ea3b87a
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Await.m	
@@ -0,0 +1,48 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Await.h"
+
+#import "FBLPromisePrivate.h"
+
+id __nullable FBLPromiseAwait(FBLPromise *promise, NSError **outError) {
+  assert(promise);
+
+  static dispatch_once_t onceToken;
+  static dispatch_queue_t queue;
+  dispatch_once(&onceToken, ^{
+    queue = dispatch_queue_create("com.google.FBLPromises.Await", DISPATCH_QUEUE_CONCURRENT);
+  });
+  dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+  id __block resolution;
+  NSError __block *blockError;
+  [promise chainOnQueue:queue
+      chainedFulfill:^id(id value) {
+        resolution = value;
+        dispatch_semaphore_signal(semaphore);
+        return value;
+      }
+      chainedReject:^id(NSError *error) {
+        blockError = error;
+        dispatch_semaphore_signal(semaphore);
+        return error;
+      }];
+  dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+  if (outError) {
+    *outError = blockError;
+  }
+  return resolution;
+}
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Catch.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Catch.m
new file mode 100644
index 0000000..25e8ce6
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Catch.m	
@@ -0,0 +1,55 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Catch.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (CatchAdditions)
+
+- (FBLPromise *)catch:(FBLPromiseCatchWorkBlock)reject {
+  return [self onQueue:FBLPromise.defaultDispatchQueue catch:reject];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue catch:(FBLPromiseCatchWorkBlock)reject {
+  NSParameterAssert(queue);
+  NSParameterAssert(reject);
+
+  return [self chainOnQueue:queue
+             chainedFulfill:nil
+              chainedReject:^id(NSError *error) {
+                reject(error);
+                return error;
+              }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_CatchAdditions)
+
+- (FBLPromise* (^)(FBLPromiseCatchWorkBlock))catch {
+  return ^(FBLPromiseCatchWorkBlock catch) {
+    return [self catch:catch];
+  };
+}
+
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseCatchWorkBlock))catchOn {
+  return ^(dispatch_queue_t queue, FBLPromiseCatchWorkBlock catch) {
+    return [self onQueue:queue catch:catch];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Delay.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Delay.m
new file mode 100644
index 0000000..ce94c33
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Delay.m	
@@ -0,0 +1,59 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Delay.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (DelayAdditions)
+
+- (FBLPromise *)delay:(NSTimeInterval)interval {
+  return [self onQueue:FBLPromise.defaultDispatchQueue delay:interval];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue delay:(NSTimeInterval)interval {
+  NSParameterAssert(queue);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  [self observeOnQueue:queue
+      fulfill:^(id __nullable value) {
+        dispatch_after(dispatch_time(0, (int64_t)(interval * NSEC_PER_SEC)), queue, ^{
+          [promise fulfill:value];
+        });
+      }
+      reject:^(NSError *error) {
+        [promise reject:error];
+      }];
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_DelayAdditions)
+
+- (FBLPromise * (^)(NSTimeInterval))delay {
+  return ^(NSTimeInterval interval) {
+    return [self delay:interval];
+  };
+}
+
+- (FBLPromise * (^)(dispatch_queue_t, NSTimeInterval))delayOn {
+  return ^(dispatch_queue_t queue, NSTimeInterval interval) {
+    return [self onQueue:queue delay:interval];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Do.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Do.m
new file mode 100644
index 0000000..eb7e10d
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Do.m	
@@ -0,0 +1,59 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Do.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (DoAdditions)
+
++ (instancetype)do:(FBLPromiseDoWorkBlock)work {
+  return [self onQueue:self.defaultDispatchQueue do:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue do:(FBLPromiseDoWorkBlock)work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  dispatch_group_async(FBLPromise.dispatchGroup, queue, ^{
+    id value = work();
+    if ([value isKindOfClass:[FBLPromise class]]) {
+      [(FBLPromise *)value observeOnQueue:queue
+          fulfill:^(id __nullable value) {
+            [promise fulfill:value];
+          }
+          reject:^(NSError *error) {
+            [promise reject:error];
+          }];
+    } else {
+      [promise fulfill:value];
+    }
+  });
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_DoAdditions)
+
++ (FBLPromise* (^)(dispatch_queue_t, FBLPromiseDoWorkBlock))doOn {
+  return ^(dispatch_queue_t queue, FBLPromiseDoWorkBlock work) {
+    return [self onQueue:queue do:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Race.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Race.m
new file mode 100644
index 0000000..b5bd9f1
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Race.m	
@@ -0,0 +1,65 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Race.h"
+
+#import "FBLPromise+Async.h"
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (RaceAdditions)
+
++ (instancetype)race:(NSArray *)promises {
+  return [self onQueue:self.defaultDispatchQueue race:promises];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue race:(NSArray *)racePromises {
+  NSParameterAssert(queue);
+  NSAssert(racePromises.count > 0, @"No promises to observe");
+
+  NSArray *promises = [racePromises copy];
+  return [FBLPromise onQueue:queue
+                       async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                         for (id promise in promises) {
+                           if (![promise isKindOfClass:self]) {
+                             fulfill(promise);
+                             return;
+                           }
+                         }
+                         // Subscribe all, but only the first one to resolve will change
+                         // the resulting promise's state.
+                         for (FBLPromise *promise in promises) {
+                           [promise observeOnQueue:queue fulfill:fulfill reject:reject];
+                         }
+                       }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_RaceAdditions)
+
++ (FBLPromise * (^)(NSArray *))race {
+  return ^(NSArray *promises) {
+    return [self race:promises];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, NSArray *))raceOn {
+  return ^(dispatch_queue_t queue, NSArray *promises) {
+    return [self onQueue:queue race:promises];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Recover.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Recover.m
new file mode 100644
index 0000000..0c9326a
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Recover.m	
@@ -0,0 +1,54 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Recover.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (RecoverAdditions)
+
+- (FBLPromise *)recover:(FBLPromiseRecoverWorkBlock)recovery {
+  return [self onQueue:FBLPromise.defaultDispatchQueue recover:recovery];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue recover:(FBLPromiseRecoverWorkBlock)recovery {
+  NSParameterAssert(queue);
+  NSParameterAssert(recovery);
+
+  return [self chainOnQueue:queue
+             chainedFulfill:nil
+              chainedReject:^id(NSError *error) {
+                return recovery(error);
+              }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_RecoverAdditions)
+
+- (FBLPromise * (^)(FBLPromiseRecoverWorkBlock))recover {
+  return ^(FBLPromiseRecoverWorkBlock recovery) {
+    return [self recover:recovery];
+  };
+}
+
+- (FBLPromise * (^)(dispatch_queue_t, FBLPromiseRecoverWorkBlock))recoverOn {
+  return ^(dispatch_queue_t queue, FBLPromiseRecoverWorkBlock recovery) {
+    return [self onQueue:queue recover:recovery];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Reduce.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Reduce.m
new file mode 100644
index 0000000..1f3fc50
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Reduce.m	
@@ -0,0 +1,61 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Reduce.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (ReduceAdditions)
+
+- (FBLPromise *)reduce:(NSArray *)items combine:(FBLPromiseReducerBlock)reducer {
+  return [self onQueue:FBLPromise.defaultDispatchQueue reduce:items combine:reducer];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                 reduce:(NSArray *)items
+                combine:(FBLPromiseReducerBlock)reducer {
+  NSParameterAssert(queue);
+  NSParameterAssert(items);
+  NSParameterAssert(reducer);
+
+  FBLPromise *promise = self;
+  for (id item in items) {
+    promise = [promise chainOnQueue:queue
+                     chainedFulfill:^id(id value) {
+                       return reducer(value, item);
+                     }
+                      chainedReject:nil];
+  }
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_ReduceAdditions)
+
+- (FBLPromise * (^)(NSArray *, FBLPromiseReducerBlock))reduce {
+  return ^(NSArray *items, FBLPromiseReducerBlock reducer) {
+    return [self reduce:items combine:reducer];
+  };
+}
+
+- (FBLPromise * (^)(dispatch_queue_t, NSArray *, FBLPromiseReducerBlock))reduceOn {
+  return ^(dispatch_queue_t queue, NSArray *items, FBLPromiseReducerBlock reducer) {
+    return [self onQueue:queue reduce:items combine:reducer];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Retry.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Retry.m
new file mode 100644
index 0000000..37c5576
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Retry.m	
@@ -0,0 +1,128 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Retry.h"
+
+#import "FBLPromisePrivate.h"
+
+NSInteger const FBLPromiseRetryDefaultAttemptsCount = 1;
+NSTimeInterval const FBLPromiseRetryDefaultDelayInterval = 1.0;
+
+static void FBLPromiseRetryAttempt(FBLPromise *promise, dispatch_queue_t queue, NSInteger count,
+                                   NSTimeInterval interval, FBLPromiseRetryPredicateBlock predicate,
+                                   FBLPromiseRetryWorkBlock work) {
+  __auto_type retrier = ^(id __nullable value) {
+    if ([value isKindOfClass:[NSError class]]) {
+      if (count <= 0 || (predicate && !predicate(count, value))) {
+        [promise reject:value];
+      } else {
+        dispatch_after(dispatch_time(0, (int64_t)(interval * NSEC_PER_SEC)), queue, ^{
+          FBLPromiseRetryAttempt(promise, queue, count - 1, interval, predicate, work);
+        });
+      }
+    } else {
+      [promise fulfill:value];
+    }
+  };
+  id value = work();
+  if ([value isKindOfClass:[FBLPromise class]]) {
+    [(FBLPromise *)value observeOnQueue:queue fulfill:retrier reject:retrier];
+  } else  {
+    retrier(value);
+  }
+}
+
+@implementation FBLPromise (RetryAdditions)
+
++ (FBLPromise *)retry:(FBLPromiseRetryWorkBlock)work {
+  return [self onQueue:FBLPromise.defaultDispatchQueue retry:work];
+}
+
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue retry:(FBLPromiseRetryWorkBlock)work {
+  return [self onQueue:queue attempts:FBLPromiseRetryDefaultAttemptsCount retry:work];
+}
+
++ (FBLPromise *)attempts:(NSInteger)count retry:(FBLPromiseRetryWorkBlock)work {
+  return [self onQueue:FBLPromise.defaultDispatchQueue attempts:count retry:work];
+}
+
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue
+               attempts:(NSInteger)count
+                  retry:(FBLPromiseRetryWorkBlock)work {
+  return [self onQueue:queue
+              attempts:count
+                 delay:FBLPromiseRetryDefaultDelayInterval
+             condition:nil
+                 retry:work];
+}
+
++ (FBLPromise *)attempts:(NSInteger)count
+                   delay:(NSTimeInterval)interval
+               condition:(nullable FBLPromiseRetryPredicateBlock)predicate
+                   retry:(FBLPromiseRetryWorkBlock)work {
+  return [self onQueue:FBLPromise.defaultDispatchQueue
+              attempts:count
+                 delay:interval
+             condition:predicate
+                 retry:work];
+}
+
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue
+               attempts:(NSInteger)count
+                  delay:(NSTimeInterval)interval
+              condition:(nullable FBLPromiseRetryPredicateBlock)predicate
+                  retry:(FBLPromiseRetryWorkBlock)work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  FBLPromiseRetryAttempt(promise, queue, count, interval, predicate, work);
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_RetryAdditions)
+
++ (FBLPromise * (^)(FBLPromiseRetryWorkBlock))retry {
+  return ^id(FBLPromiseRetryWorkBlock work) {
+    return [self retry:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, FBLPromiseRetryWorkBlock))retryOn {
+  return ^id(dispatch_queue_t queue, FBLPromiseRetryWorkBlock work) {
+    return [self onQueue:queue retry:work];
+  };
+}
+
++ (FBLPromise * (^)(NSInteger, NSTimeInterval, FBLPromiseRetryPredicateBlock,
+                    FBLPromiseRetryWorkBlock))retryAgain {
+  return ^id(NSInteger count, NSTimeInterval interval, FBLPromiseRetryPredicateBlock predicate,
+             FBLPromiseRetryWorkBlock work) {
+    return [self attempts:count delay:interval condition:predicate retry:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, NSInteger, NSTimeInterval, FBLPromiseRetryPredicateBlock,
+                    FBLPromiseRetryWorkBlock))retryAgainOn {
+  return ^id(dispatch_queue_t queue, NSInteger count, NSTimeInterval interval,
+             FBLPromiseRetryPredicateBlock predicate, FBLPromiseRetryWorkBlock work) {
+    return [self onQueue:queue attempts:count delay:interval condition:predicate retry:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Testing.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Testing.m
new file mode 100644
index 0000000..33d3536
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Testing.m	
@@ -0,0 +1,55 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Testing.h"
+
+BOOL FBLWaitForPromisesWithTimeout(NSTimeInterval timeout) {
+  BOOL isTimedOut = NO;
+  NSDate *timeoutDate = [NSDate dateWithTimeIntervalSinceNow:timeout];
+  static NSTimeInterval const minimalTimeout = 0.01;
+  static int64_t const minimalTimeToWait = (int64_t)(minimalTimeout * NSEC_PER_SEC);
+  dispatch_time_t waitTime = dispatch_time(DISPATCH_TIME_NOW, minimalTimeToWait);
+  dispatch_group_t dispatchGroup = FBLPromise.dispatchGroup;
+  NSRunLoop *runLoop = NSRunLoop.currentRunLoop;
+  while (dispatch_group_wait(dispatchGroup, waitTime)) {
+    isTimedOut = timeoutDate.timeIntervalSinceNow < 0.0;
+    if (isTimedOut) {
+      break;
+    }
+    [runLoop runUntilDate:[NSDate dateWithTimeIntervalSinceNow:minimalTimeout]];
+  }
+  return !isTimedOut;
+}
+
+@implementation FBLPromise (TestingAdditions)
+
+// These properties are implemented in the FBLPromise class itself.
+@dynamic isPending;
+@dynamic isFulfilled;
+@dynamic isRejected;
+@dynamic value;
+@dynamic error;
+
++ (dispatch_group_t)dispatchGroup {
+  static dispatch_group_t gDispatchGroup;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    gDispatchGroup = dispatch_group_create();
+  });
+  return gDispatchGroup;
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Then.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Then.m
new file mode 100644
index 0000000..ab03bd1
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Then.m	
@@ -0,0 +1,50 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Then.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (ThenAdditions)
+
+- (FBLPromise *)then:(FBLPromiseThenWorkBlock)work {
+  return [self onQueue:FBLPromise.defaultDispatchQueue then:work];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue then:(FBLPromiseThenWorkBlock)work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self chainOnQueue:queue chainedFulfill:work chainedReject:nil];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_ThenAdditions)
+
+- (FBLPromise* (^)(FBLPromiseThenWorkBlock))then {
+  return ^(FBLPromiseThenWorkBlock work) {
+    return [self then:work];
+  };
+}
+
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseThenWorkBlock))thenOn {
+  return ^(dispatch_queue_t queue, FBLPromiseThenWorkBlock work) {
+    return [self onQueue:queue then:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Timeout.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Timeout.m
new file mode 100644
index 0000000..a2252e6
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Timeout.m	
@@ -0,0 +1,64 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Timeout.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (TimeoutAdditions)
+
+- (FBLPromise *)timeout:(NSTimeInterval)interval {
+  return [self onQueue:FBLPromise.defaultDispatchQueue timeout:interval];
+}
+
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue timeout:(NSTimeInterval)interval {
+  NSParameterAssert(queue);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  [self observeOnQueue:queue
+      fulfill:^(id __nullable value) {
+        [promise fulfill:value];
+      }
+      reject:^(NSError *error) {
+        [promise reject:error];
+      }];
+  typeof(self) __weak weakPromise = promise;
+  dispatch_after(dispatch_time(0, (int64_t)(interval * NSEC_PER_SEC)), queue, ^{
+    NSError *timedOutError = [[NSError alloc] initWithDomain:FBLPromiseErrorDomain
+                                                        code:FBLPromiseErrorCodeTimedOut
+                                                    userInfo:nil];
+    [weakPromise reject:timedOutError];
+  });
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_TimeoutAdditions)
+
+- (FBLPromise* (^)(NSTimeInterval))timeout {
+  return ^(NSTimeInterval interval) {
+    return [self timeout:interval];
+  };
+}
+
+- (FBLPromise* (^)(dispatch_queue_t, NSTimeInterval))timeoutOn {
+  return ^(dispatch_queue_t queue, NSTimeInterval interval) {
+    return [self onQueue:queue timeout:interval];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Validate.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Validate.m
new file mode 100644
index 0000000..1e21e81
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Validate.m	
@@ -0,0 +1,56 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Validate.h"
+
+#import "FBLPromisePrivate.h"
+
+@implementation FBLPromise (ValidateAdditions)
+
+- (FBLPromise*)validate:(FBLPromiseValidateWorkBlock)predicate {
+  return [self onQueue:FBLPromise.defaultDispatchQueue validate:predicate];
+}
+
+- (FBLPromise*)onQueue:(dispatch_queue_t)queue validate:(FBLPromiseValidateWorkBlock)predicate {
+  NSParameterAssert(queue);
+  NSParameterAssert(predicate);
+
+  FBLPromiseChainedFulfillBlock chainedFulfill = ^id(id value) {
+    return predicate(value) ? value :
+                              [[NSError alloc] initWithDomain:FBLPromiseErrorDomain
+                                                         code:FBLPromiseErrorCodeValidationFailure
+                                                     userInfo:nil];
+  };
+  return [self chainOnQueue:queue chainedFulfill:chainedFulfill chainedReject:nil];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_ValidateAdditions)
+
+- (FBLPromise* (^)(FBLPromiseValidateWorkBlock))validate {
+  return ^(FBLPromiseValidateWorkBlock predicate) {
+    return [self validate:predicate];
+  };
+}
+
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseValidateWorkBlock))validateOn {
+  return ^(dispatch_queue_t queue, FBLPromiseValidateWorkBlock predicate) {
+    return [self onQueue:queue validate:predicate];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Wrap.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Wrap.m
new file mode 100644
index 0000000..ee10951
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise+Wrap.m	
@@ -0,0 +1,420 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Wrap.h"
+
+#import "FBLPromise+Async.h"
+
+@implementation FBLPromise (WrapAdditions)
+
++ (instancetype)wrapCompletion:(void (^)(FBLPromiseCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapCompletion:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue
+         wrapCompletion:(void (^)(FBLPromiseCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock __unused _) {
+                   work(^{
+                     fulfill(nil);
+                   });
+                 }];
+}
+
++ (instancetype)wrapObjectCompletion:(void (^)(FBLPromiseObjectCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapObjectCompletion:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapObjectCompletion:(void (^)(FBLPromiseObjectCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock __unused _) {
+                   work(^(id __nullable value) {
+                     fulfill(value);
+                   });
+                 }];
+}
+
++ (instancetype)wrapErrorCompletion:(void (^)(FBLPromiseErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapErrorCompletion:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapErrorCompletion:(void (^)(FBLPromiseErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(nil);
+                     }
+                   });
+                 }];
+}
+
++ (instancetype)wrapObjectOrErrorCompletion:(void (^)(FBLPromiseObjectOrErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapObjectOrErrorCompletion:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapObjectOrErrorCompletion:(void (^)(FBLPromiseObjectOrErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(id __nullable value, NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(value);
+                     }
+                   });
+                 }];
+}
+
++ (instancetype)wrapErrorOrObjectCompletion:(void (^)(FBLPromiseErrorOrObjectCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapErrorOrObjectCompletion:work];
+}
+
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapErrorOrObjectCompletion:(void (^)(FBLPromiseErrorOrObjectCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(NSError *__nullable error, id __nullable value) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(value);
+                     }
+                   });
+                 }];
+}
+
++ (FBLPromise<NSArray *> *)wrap2ObjectsOrErrorCompletion:
+    (void (^)(FBLPromise2ObjectsOrErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrap2ObjectsOrErrorCompletion:work];
+}
+
++ (FBLPromise<NSArray *> *)onQueue:(dispatch_queue_t)queue
+     wrap2ObjectsOrErrorCompletion:(void (^)(FBLPromise2ObjectsOrErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(id __nullable value1, id __nullable value2, NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(@[ value1 ?: [NSNull null], value2 ?: [NSNull null] ]);
+                     }
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapBoolCompletion:(void (^)(FBLPromiseBoolCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapBoolCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+                 wrapBoolCompletion:(void (^)(FBLPromiseBoolCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock __unused _) {
+                   work(^(BOOL value) {
+                     fulfill(@(value));
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapBoolOrErrorCompletion:
+    (void (^)(FBLPromiseBoolOrErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapBoolOrErrorCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+          wrapBoolOrErrorCompletion:(void (^)(FBLPromiseBoolOrErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(BOOL value, NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(@(value));
+                     }
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapIntegerCompletion:(void (^)(FBLPromiseIntegerCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapIntegerCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+              wrapIntegerCompletion:(void (^)(FBLPromiseIntegerCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock __unused _) {
+                   work(^(NSInteger value) {
+                     fulfill(@(value));
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapIntegerOrErrorCompletion:
+    (void (^)(FBLPromiseIntegerOrErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapIntegerOrErrorCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+       wrapIntegerOrErrorCompletion:(void (^)(FBLPromiseIntegerOrErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(NSInteger value, NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(@(value));
+                     }
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapDoubleCompletion:(void (^)(FBLPromiseDoubleCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapDoubleCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+               wrapDoubleCompletion:(void (^)(FBLPromiseDoubleCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:(dispatch_queue_t)queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock __unused _) {
+                   work(^(double value) {
+                     fulfill(@(value));
+                   });
+                 }];
+}
+
++ (FBLPromise<NSNumber *> *)wrapDoubleOrErrorCompletion:
+    (void (^)(FBLPromiseDoubleOrErrorCompletion))work {
+  return [self onQueue:self.defaultDispatchQueue wrapDoubleOrErrorCompletion:work];
+}
+
++ (FBLPromise<NSNumber *> *)onQueue:(dispatch_queue_t)queue
+        wrapDoubleOrErrorCompletion:(void (^)(FBLPromiseDoubleOrErrorCompletion))work {
+  NSParameterAssert(queue);
+  NSParameterAssert(work);
+
+  return [self onQueue:queue
+                 async:^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) {
+                   work(^(double value, NSError *__nullable error) {
+                     if (error) {
+                       reject(error);
+                     } else {
+                       fulfill(@(value));
+                     }
+                   });
+                 }];
+}
+
+@end
+
+@implementation FBLPromise (DotSyntax_WrapAdditions)
+
++ (FBLPromise * (^)(void (^)(FBLPromiseCompletion)))wrapCompletion {
+  return ^(void (^work)(FBLPromiseCompletion)) {
+    return [self wrapCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, void (^)(FBLPromiseCompletion)))wrapCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseCompletion)) {
+    return [self onQueue:queue wrapCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(void (^)(FBLPromiseObjectCompletion)))wrapObjectCompletion {
+  return ^(void (^work)(FBLPromiseObjectCompletion)) {
+    return [self wrapObjectCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, void (^)(FBLPromiseObjectCompletion)))wrapObjectCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseObjectCompletion)) {
+    return [self onQueue:queue wrapObjectCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(void (^)(FBLPromiseErrorCompletion)))wrapErrorCompletion {
+  return ^(void (^work)(FBLPromiseErrorCompletion)) {
+    return [self wrapErrorCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t, void (^)(FBLPromiseErrorCompletion)))wrapErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseErrorCompletion)) {
+    return [self onQueue:queue wrapErrorCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(void (^)(FBLPromiseObjectOrErrorCompletion)))wrapObjectOrErrorCompletion {
+  return ^(void (^work)(FBLPromiseObjectOrErrorCompletion)) {
+    return [self wrapObjectOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t,
+                    void (^)(FBLPromiseObjectOrErrorCompletion)))wrapObjectOrErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseObjectOrErrorCompletion)) {
+    return [self onQueue:queue wrapObjectOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(void (^)(FBLPromiseErrorOrObjectCompletion)))wrapErrorOrObjectCompletion {
+  return ^(void (^work)(FBLPromiseErrorOrObjectCompletion)) {
+    return [self wrapErrorOrObjectCompletion:work];
+  };
+}
+
++ (FBLPromise * (^)(dispatch_queue_t,
+                    void (^)(FBLPromiseErrorOrObjectCompletion)))wrapErrorOrObjectCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseErrorOrObjectCompletion)) {
+    return [self onQueue:queue wrapErrorOrObjectCompletion:work];
+  };
+}
+
++ (FBLPromise<NSArray *> * (^)(void (^)(FBLPromise2ObjectsOrErrorCompletion)))
+    wrap2ObjectsOrErrorCompletion {
+  return ^(void (^work)(FBLPromise2ObjectsOrErrorCompletion)) {
+    return [self wrap2ObjectsOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSArray *> * (^)(dispatch_queue_t, void (^)(FBLPromise2ObjectsOrErrorCompletion)))
+    wrap2ObjectsOrErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromise2ObjectsOrErrorCompletion)) {
+    return [self onQueue:queue wrap2ObjectsOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseBoolCompletion)))wrapBoolCompletion {
+  return ^(void (^work)(FBLPromiseBoolCompletion)) {
+    return [self wrapBoolCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t,
+                                void (^)(FBLPromiseBoolCompletion)))wrapBoolCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseBoolCompletion)) {
+    return [self onQueue:queue wrapBoolCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseBoolOrErrorCompletion)))
+    wrapBoolOrErrorCompletion {
+  return ^(void (^work)(FBLPromiseBoolOrErrorCompletion)) {
+    return [self wrapBoolOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t, void (^)(FBLPromiseBoolOrErrorCompletion)))
+    wrapBoolOrErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseBoolOrErrorCompletion)) {
+    return [self onQueue:queue wrapBoolOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseIntegerCompletion)))wrapIntegerCompletion {
+  return ^(void (^work)(FBLPromiseIntegerCompletion)) {
+    return [self wrapIntegerCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t,
+                                void (^)(FBLPromiseIntegerCompletion)))wrapIntegerCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseIntegerCompletion)) {
+    return [self onQueue:queue wrapIntegerCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseIntegerOrErrorCompletion)))
+    wrapIntegerOrErrorCompletion {
+  return ^(void (^work)(FBLPromiseIntegerOrErrorCompletion)) {
+    return [self wrapIntegerOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t, void (^)(FBLPromiseIntegerOrErrorCompletion)))
+    wrapIntegerOrErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseIntegerOrErrorCompletion)) {
+    return [self onQueue:queue wrapIntegerOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseDoubleCompletion)))wrapDoubleCompletion {
+  return ^(void (^work)(FBLPromiseDoubleCompletion)) {
+    return [self wrapDoubleCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t,
+                                void (^)(FBLPromiseDoubleCompletion)))wrapDoubleCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseDoubleCompletion)) {
+    return [self onQueue:queue wrapDoubleCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(void (^)(FBLPromiseDoubleOrErrorCompletion)))
+    wrapDoubleOrErrorCompletion {
+  return ^(void (^work)(FBLPromiseDoubleOrErrorCompletion)) {
+    return [self wrapDoubleOrErrorCompletion:work];
+  };
+}
+
++ (FBLPromise<NSNumber *> * (^)(dispatch_queue_t, void (^)(FBLPromiseDoubleOrErrorCompletion)))
+    wrapDoubleOrErrorCompletionOn {
+  return ^(dispatch_queue_t queue, void (^work)(FBLPromiseDoubleOrErrorCompletion)) {
+    return [self onQueue:queue wrapDoubleOrErrorCompletion:work];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise.m
new file mode 100644
index 0000000..c12ad32
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromise.m	
@@ -0,0 +1,299 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromisePrivate.h"
+
+/** All states a promise can be in. */
+typedef NS_ENUM(NSInteger, FBLPromiseState) {
+  FBLPromiseStatePending = 0,
+  FBLPromiseStateFulfilled,
+  FBLPromiseStateRejected,
+};
+
+typedef void (^FBLPromiseObserver)(FBLPromiseState state, id __nullable resolution);
+
+static dispatch_queue_t gFBLPromiseDefaultDispatchQueue;
+
+@implementation FBLPromise {
+  /** Current state of the promise. */
+  FBLPromiseState _state;
+  /**
+   Set of arbitrary objects to keep strongly while the promise is pending.
+   Becomes nil after the promise has been resolved.
+   */
+  NSMutableSet *__nullable _pendingObjects;
+  /**
+   Value to fulfill the promise with.
+   Can be nil if the promise is still pending, was resolved with nil or after it has been rejected.
+   */
+  id __nullable _value;
+  /**
+   Error to reject the promise with.
+   Can be nil if the promise is still pending or after it has been fulfilled.
+   */
+  NSError *__nullable _error;
+  /** List of observers to notify when the promise gets resolved. */
+  NSMutableArray<FBLPromiseObserver> *_observers;
+}
+
++ (void)initialize {
+  if (self == [FBLPromise class]) {
+    gFBLPromiseDefaultDispatchQueue = dispatch_get_main_queue();
+  }
+}
+
++ (dispatch_queue_t)defaultDispatchQueue {
+  @synchronized(self) {
+    return gFBLPromiseDefaultDispatchQueue;
+  }
+}
+
++ (void)setDefaultDispatchQueue:(dispatch_queue_t)queue {
+  NSParameterAssert(queue);
+
+  @synchronized(self) {
+    gFBLPromiseDefaultDispatchQueue = queue;
+  }
+}
+
++ (instancetype)pendingPromise {
+  return [[self alloc] initPending];
+}
+
++ (instancetype)resolvedWith:(nullable id)resolution {
+  return [[self alloc] initWithResolution:resolution];
+}
+
+- (void)fulfill:(nullable id)value {
+  if ([value isKindOfClass:[NSError class]]) {
+    [self reject:(NSError *)value];
+  } else {
+    @synchronized(self) {
+      if (_state == FBLPromiseStatePending) {
+        _state = FBLPromiseStateFulfilled;
+        _value = value;
+        _pendingObjects = nil;
+        for (FBLPromiseObserver observer in _observers) {
+          observer(_state, _value);
+        }
+        _observers = nil;
+        dispatch_group_leave(FBLPromise.dispatchGroup);
+      }
+    }
+  }
+}
+
+- (void)reject:(NSError *)error {
+  NSAssert([error isKindOfClass:[NSError class]], @"Invalid error type.");
+
+  if (![error isKindOfClass:[NSError class]]) {
+    // Give up on invalid error type in Release mode.
+    @throw error;  // NOLINT
+  }
+  @synchronized(self) {
+    if (_state == FBLPromiseStatePending) {
+      _state = FBLPromiseStateRejected;
+      _error = error;
+      _pendingObjects = nil;
+      for (FBLPromiseObserver observer in _observers) {
+        observer(_state, _error);
+      }
+      _observers = nil;
+      dispatch_group_leave(FBLPromise.dispatchGroup);
+    }
+  }
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+  if (self.isFulfilled) {
+    return [NSString stringWithFormat:@"<%@ %p> Fulfilled: %@", NSStringFromClass([self class]),
+                                      self, self.value];
+  }
+  if (self.isRejected) {
+    return [NSString stringWithFormat:@"<%@ %p> Rejected: %@", NSStringFromClass([self class]),
+                                      self, self.error];
+  }
+  return [NSString stringWithFormat:@"<%@ %p> Pending", NSStringFromClass([self class]), self];
+}
+
+#pragma mark - Private
+
+- (instancetype)initPending {
+  self = [super init];
+  if (self) {
+    dispatch_group_enter(FBLPromise.dispatchGroup);
+  }
+  return self;
+}
+
+- (instancetype)initWithResolution:(nullable id)resolution {
+  self = [super init];
+  if (self) {
+    if ([resolution isKindOfClass:[NSError class]]) {
+      _state = FBLPromiseStateRejected;
+      _error = (NSError *)resolution;
+    } else {
+      _state = FBLPromiseStateFulfilled;
+      _value = resolution;
+    }
+  }
+  return self;
+}
+
+- (void)dealloc {
+  if (_state == FBLPromiseStatePending) {
+    dispatch_group_leave(FBLPromise.dispatchGroup);
+  }
+}
+
+- (BOOL)isPending {
+  @synchronized(self) {
+    return _state == FBLPromiseStatePending;
+  }
+}
+
+- (BOOL)isFulfilled {
+  @synchronized(self) {
+    return _state == FBLPromiseStateFulfilled;
+  }
+}
+
+- (BOOL)isRejected {
+  @synchronized(self) {
+    return _state == FBLPromiseStateRejected;
+  }
+}
+
+- (nullable id)value {
+  @synchronized(self) {
+    return _value;
+  }
+}
+
+- (NSError *__nullable)error {
+  @synchronized(self) {
+    return _error;
+  }
+}
+
+- (void)addPendingObject:(id)object {
+  NSParameterAssert(object);
+  
+  @synchronized(self) {
+    if (_state == FBLPromiseStatePending) {
+      if (!_pendingObjects) {
+        _pendingObjects = [[NSMutableSet alloc] init];
+      }
+      [_pendingObjects addObject:object];
+    }
+  }
+}
+
+- (void)observeOnQueue:(dispatch_queue_t)queue
+               fulfill:(FBLPromiseOnFulfillBlock)onFulfill
+                reject:(FBLPromiseOnRejectBlock)onReject {
+  NSParameterAssert(queue);
+  NSParameterAssert(onFulfill);
+  NSParameterAssert(onReject);
+
+  @synchronized(self) {
+    switch (_state) {
+      case FBLPromiseStatePending: {
+        if (!_observers) {
+          _observers = [[NSMutableArray alloc] init];
+        }
+        [_observers addObject:^(FBLPromiseState state, id __nullable resolution) {
+          dispatch_group_async(FBLPromise.dispatchGroup, queue, ^{
+            switch (state) {
+              case FBLPromiseStatePending:
+                break;
+              case FBLPromiseStateFulfilled:
+                onFulfill(resolution);
+                break;
+              case FBLPromiseStateRejected:
+                onReject(resolution);
+                break;
+            }
+          });
+        }];
+        break;
+      }
+      case FBLPromiseStateFulfilled: {
+        dispatch_group_async(FBLPromise.dispatchGroup, queue, ^{
+          onFulfill(self->_value);
+        });
+        break;
+      }
+      case FBLPromiseStateRejected: {
+        dispatch_group_async(FBLPromise.dispatchGroup, queue, ^{
+          onReject(self->_error);
+        });
+        break;
+      }
+    }
+  }
+}
+
+- (FBLPromise *)chainOnQueue:(dispatch_queue_t)queue
+              chainedFulfill:(FBLPromiseChainedFulfillBlock)chainedFulfill
+               chainedReject:(FBLPromiseChainedRejectBlock)chainedReject {
+  NSParameterAssert(queue);
+
+  FBLPromise *promise = [[FBLPromise alloc] initPending];
+  __auto_type resolver = ^(id __nullable value) {
+    if ([value isKindOfClass:[FBLPromise class]]) {
+      [(FBLPromise *)value observeOnQueue:queue
+          fulfill:^(id __nullable value) {
+            [promise fulfill:value];
+          }
+          reject:^(NSError *error) {
+            [promise reject:error];
+          }];
+    } else {
+      [promise fulfill:value];
+    }
+  };
+  [self observeOnQueue:queue
+      fulfill:^(id __nullable value) {
+        value = chainedFulfill ? chainedFulfill(value) : value;
+        resolver(value);
+      }
+      reject:^(NSError *error) {
+        id value = chainedReject ? chainedReject(error) : error;
+        resolver(value);
+      }];
+  return promise;
+}
+
+@end
+
+@implementation FBLPromise (DotSyntaxAdditions)
+
++ (instancetype (^)(void))pending {
+  return ^(void) {
+    return [self pendingPromise];
+  };
+}
+
++ (instancetype (^)(id __nullable))resolved {
+  return ^(id resolution) {
+    return [self resolvedWith:resolution];
+  };
+}
+
+@end
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromiseError.m b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromiseError.m
new file mode 100644
index 0000000..1cc181a
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/FBLPromiseError.m	
@@ -0,0 +1,19 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromiseError.h"
+
+NSErrorDomain const FBLPromiseErrorDomain = @"com.google.FBLPromises.Error";
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+All.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+All.h
new file mode 100644
index 0000000..9c0090e
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+All.h	
@@ -0,0 +1,63 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(AllAdditions)
+
+/**
+ Wait until all of the given promises are fulfilled.
+ If one of the given promises is rejected, then the returned promise is rejected with same error.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected `FBLPromise` correspondingly.
+ Promises resolved with `nil` become `NSNull` instances in the resulting array.
+
+ @param promises Promises to wait for.
+ @return Promise of an array containing the values of input promises in the same order.
+ */
++ (FBLPromise<NSArray *> *)all:(NSArray *)promises NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Wait until all of the given promises are fulfilled.
+ If one of the given promises is rejected, then the returned promise is rejected with same error.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected FBLPromise correspondingly.
+ Promises resolved with `nil` become `NSNull` instances in the resulting array.
+
+ @param queue A queue to dispatch on.
+ @param promises Promises to wait for.
+ @return Promise of an array containing the values of input promises in the same order.
+ */
++ (FBLPromise<NSArray *> *)onQueue:(dispatch_queue_t)queue
+                               all:(NSArray *)promises NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `all` operators.
+ Usage: FBLPromise.all(@[ ... ])
+ */
+@interface FBLPromise<Value>(DotSyntax_AllAdditions)
+
++ (FBLPromise<NSArray *> * (^)(NSArray *))all FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSArray *> * (^)(dispatch_queue_t, NSArray *))allOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Always.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Always.h
new file mode 100644
index 0000000..13000f5
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Always.h	
@@ -0,0 +1,54 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(AlwaysAdditions)
+
+typedef void (^FBLPromiseAlwaysWorkBlock)(void) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block that always executes, no matter if the receiver is rejected or fulfilled.
+ @return A new pending promise to be resolved with same resolution as the receiver.
+ */
+- (FBLPromise *)always:(FBLPromiseAlwaysWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to dispatch on.
+ @param work A block that always executes, no matter if the receiver is rejected or fulfilled.
+ @return A new pending promise to be resolved with same resolution as the receiver.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                 always:(FBLPromiseAlwaysWorkBlock)work NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `always` operators.
+ Usage: promise.always(^{...})
+ */
+@interface FBLPromise<Value>(DotSyntax_AlwaysAdditions)
+
+- (FBLPromise* (^)(FBLPromiseAlwaysWorkBlock))always FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseAlwaysWorkBlock))alwaysOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Any.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Any.h
new file mode 100644
index 0000000..82875bf
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Any.h	
@@ -0,0 +1,69 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(AnyAdditions)
+
+/**
+ Waits until all of the given promises are either fulfilled or rejected.
+ If all promises are rejected, then the returned promise is rejected with same error
+ as the last one rejected.
+ If at least one of the promises is fulfilled, the resulting promise is fulfilled with an array of
+ values or `NSErrors`, matching the original order of fulfilled or rejected promises respectively.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected `FBLPromise` correspondingly.
+ Promises resolved with `nil` become `NSNull` instances in the resulting array.
+
+ @param promises Promises to wait for.
+ @return Promise of array containing the values or `NSError`s of input promises in the same order.
+ */
++ (FBLPromise<NSArray *> *)any:(NSArray *)promises NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Waits until all of the given promises are either fulfilled or rejected.
+ If all promises are rejected, then the returned promise is rejected with same error
+ as the last one rejected.
+ If at least one of the promises is fulfilled, the resulting promise is fulfilled with an array of
+ values or `NSError`s, matching the original order of fulfilled or rejected promises respectively.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected `FBLPromise` correspondingly.
+ Promises resolved with `nil` become `NSNull` instances in the resulting array.
+
+ @param queue A queue to dispatch on.
+ @param promises Promises to wait for.
+ @return Promise of array containing the values or `NSError`s of input promises in the same order.
+ */
++ (FBLPromise<NSArray *> *)onQueue:(dispatch_queue_t)queue
+                               any:(NSArray *)promises NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `any` operators.
+ Usage: FBLPromise.any(@[ ... ])
+ */
+@interface FBLPromise<Value>(DotSyntax_AnyAdditions)
+
++ (FBLPromise<NSArray *> * (^)(NSArray *))any FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSArray *> * (^)(dispatch_queue_t, NSArray *))anyOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Async.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Async.h
new file mode 100644
index 0000000..0588a9e
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Async.h	
@@ -0,0 +1,60 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(AsyncAdditions)
+
+typedef void (^FBLPromiseFulfillBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseRejectBlock)(NSError *error) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseAsyncWorkBlock)(FBLPromiseFulfillBlock fulfill,
+                                         FBLPromiseRejectBlock reject) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise and executes `work` block asynchronously.
+
+ @param work A block to perform any operations needed to resolve the promise.
+ @return A new pending promise.
+ */
++ (instancetype)async:(FBLPromiseAsyncWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise and executes `work` block asynchronously on the given queue.
+
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @return A new pending promise.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+                  async:(FBLPromiseAsyncWorkBlock)work NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `async` operators.
+ Usage: FBLPromise.async(^(FBLPromiseFulfillBlock fulfill, FBLPromiseRejectBlock reject) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_AsyncAdditions)
+
++ (FBLPromise* (^)(FBLPromiseAsyncWorkBlock))async FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t, FBLPromiseAsyncWorkBlock))asyncOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Await.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Await.h
new file mode 100644
index 0000000..c97a1ba
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Await.h	
@@ -0,0 +1,32 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ Waits for promise resolution. The current thread blocks until the promise is resolved.
+
+ @param promise Promise to wait for.
+ @param error Error the promise was rejected with, or `nil` if the promise was fulfilled.
+ @return Value the promise was fulfilled with. If the promise was rejected, the return value
+         is always `nil`, but the error out arg is not.
+ */
+FOUNDATION_EXTERN id __nullable FBLPromiseAwait(FBLPromise *promise,
+                                                NSError **error) NS_REFINED_FOR_SWIFT;
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Catch.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Catch.h
new file mode 100644
index 0000000..a9ff170
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Catch.h	
@@ -0,0 +1,59 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(CatchAdditions)
+
+typedef void (^FBLPromiseCatchWorkBlock)(NSError *error) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise which eventually gets resolved with same resolution as the receiver.
+ If receiver is rejected, then `reject` block is executed asynchronously.
+
+ @param reject A block to handle the error that receiver was rejected with.
+ @return A new pending promise.
+ */
+- (FBLPromise *)catch:(FBLPromiseCatchWorkBlock)reject NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise which eventually gets resolved with same resolution as the receiver.
+ If receiver is rejected, then `reject` block is executed asynchronously on the given queue.
+
+ @param queue A queue to invoke the `reject` block on.
+ @param reject A block to handle the error that receiver was rejected with.
+ @return A new pending promise.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                  catch:(FBLPromiseCatchWorkBlock)reject NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `catch` operators.
+ Usage: promise.catch(^(NSError *error) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_CatchAdditions)
+
+- (FBLPromise* (^)(FBLPromiseCatchWorkBlock))catch FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseCatchWorkBlock))catchOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Delay.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Delay.h
new file mode 100644
index 0000000..557df48
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Delay.h	
@@ -0,0 +1,59 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(DelayAdditions)
+
+/**
+ Creates a new pending promise that fulfills with the same value as `self` after the `delay`, or
+ rejects with the same error immediately.
+
+ @param interval Time to wait in seconds.
+ @return A new pending promise that fulfills at least `delay` seconds later than `self`, or rejects
+         with the same error immediately.
+ */
+- (FBLPromise *)delay:(NSTimeInterval)interval NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a new pending promise that fulfills with the same value as `self` after the `delay`, or
+ rejects with the same error immediately.
+
+ @param queue A queue to dispatch on.
+ @param interval Time to wait in seconds.
+ @return A new pending promise that fulfills at least `delay` seconds later than `self`, or rejects
+         with the same error immediately.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                  delay:(NSTimeInterval)interval NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `delay` operators.
+ Usage: promise.delay(...)
+ */
+@interface FBLPromise<Value>(DotSyntax_DelayAdditions)
+
+- (FBLPromise * (^)(NSTimeInterval))delay FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise * (^)(dispatch_queue_t, NSTimeInterval))delayOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Do.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Do.h
new file mode 100644
index 0000000..6838e0a
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Do.h	
@@ -0,0 +1,55 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(DoAdditions)
+
+typedef id __nullable (^FBLPromiseDoWorkBlock)(void) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise and executes `work` block asynchronously.
+
+ @param work A block that returns a value or an error used to resolve the promise.
+ @return A new pending promise.
+ */
++ (instancetype)do:(FBLPromiseDoWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise and executes `work` block asynchronously on the given queue.
+
+ @param queue A queue to invoke the `work` block on.
+ @param work A block that returns a value or an error used to resolve the promise.
+ @return A new pending promise.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue do:(FBLPromiseDoWorkBlock)work NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `do` operators.
+ Usage: FBLPromise.doOn(queue, ^(NSError *error) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_DoAdditions)
+
++ (FBLPromise * (^)(dispatch_queue_t, FBLPromiseDoWorkBlock))doOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Race.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Race.h
new file mode 100644
index 0000000..2f67258
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Race.h	
@@ -0,0 +1,62 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(RaceAdditions)
+
+/**
+ Wait until any of the given promises are fulfilled.
+ If one of the promises is rejected, then the returned promise is rejected with same error.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected `FBLPromise` correspondingly.
+
+ @param promises Promises to wait for.
+ @return A new pending promise to be resolved with the same resolution as the first promise, among
+         the given ones, which was resolved.
+ */
++ (instancetype)race:(NSArray *)promises NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Wait until any of the given promises are fulfilled.
+ If one of the promises is rejected, then the returned promise is rejected with same error.
+ If any other arbitrary value or `NSError` appears in the array instead of `FBLPromise`,
+ it's implicitly considered a pre-fulfilled or pre-rejected `FBLPromise` correspondingly.
+
+ @param queue A queue to dispatch on.
+ @param promises Promises to wait for.
+ @return A new pending promise to be resolved with the same resolution as the first promise, among
+         the given ones, which was resolved.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue race:(NSArray *)promises NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `race` operators.
+ Usage: FBLPromise.race(@[ ... ])
+ */
+@interface FBLPromise<Value>(DotSyntax_RaceAdditions)
+
++ (FBLPromise * (^)(NSArray *))race FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise * (^)(dispatch_queue_t, NSArray *))raceOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Recover.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Recover.h
new file mode 100644
index 0000000..bb7df7e
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Recover.h	
@@ -0,0 +1,60 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(RecoverAdditions)
+
+typedef id __nullable (^FBLPromiseRecoverWorkBlock)(NSError *error) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Provides a new promise to recover in case the receiver gets rejected.
+
+ @param recovery A block to handle the error that the receiver was rejected with.
+ @return A new pending promise to use instead of the rejected one that gets resolved with resolution
+         returned from `recovery` block.
+ */
+- (FBLPromise *)recover:(FBLPromiseRecoverWorkBlock)recovery NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Provides a new promise to recover in case the receiver gets rejected.
+
+ @param queue A queue to dispatch on.
+ @param recovery A block to handle the error that the receiver was rejected with.
+ @return A new pending promise to use instead of the rejected one that gets resolved with resolution
+         returned from `recovery` block.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                recover:(FBLPromiseRecoverWorkBlock)recovery NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `recover` operators.
+ Usage: promise.recover(^id(NSError *error) {...})
+ */
+@interface FBLPromise<Value>(DotSyntax_RecoverAdditions)
+
+- (FBLPromise * (^)(FBLPromiseRecoverWorkBlock))recover FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise * (^)(dispatch_queue_t, FBLPromiseRecoverWorkBlock))recoverOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Reduce.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Reduce.h
new file mode 100644
index 0000000..5bb1eee
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Reduce.h	
@@ -0,0 +1,71 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(ReduceAdditions)
+
+typedef id __nullable (^FBLPromiseReducerBlock)(Value __nullable partial, id next)
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Sequentially reduces a collection of values to a single promise using a given combining block
+ and the value `self` resolves with as initial value.
+
+ @param items An array of values to process in order.
+ @param reducer A block to combine an accumulating value and an element of the sequence into
+                the new accumulating value or a promise resolved with it, to be used in the next
+                call of the `reducer` or returned to the caller.
+ @return A new pending promise returned from the last `reducer` invocation.
+         Or `self` if `items` is empty.
+ */
+- (FBLPromise *)reduce:(NSArray *)items
+               combine:(FBLPromiseReducerBlock)reducer NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Sequentially reduces a collection of values to a single promise using a given combining block
+ and the value `self` resolves with as initial value.
+
+ @param queue A queue to dispatch on.
+ @param items An array of values to process in order.
+ @param reducer A block to combine an accumulating value and an element of the sequence into
+                the new accumulating value or a promise resolved with it, to be used in the next
+                call of the `reducer` or returned to the caller.
+ @return A new pending promise returned from the last `reducer` invocation.
+         Or `self` if `items` is empty.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                 reduce:(NSArray *)items
+                combine:(FBLPromiseReducerBlock)reducer NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `reduce` operators.
+ Usage: promise.reduce(values, ^id(id partial, id next) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_ReduceAdditions)
+
+- (FBLPromise * (^)(NSArray *, FBLPromiseReducerBlock))reduce FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise * (^)(dispatch_queue_t, NSArray *, FBLPromiseReducerBlock))reduceOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Retry.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Retry.h
new file mode 100644
index 0000000..98ef558
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Retry.h	
@@ -0,0 +1,165 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/** The default number of retry attempts is 1. */
+FOUNDATION_EXTERN NSInteger const FBLPromiseRetryDefaultAttemptsCount NS_REFINED_FOR_SWIFT;
+
+/** The default delay interval before making a retry attempt is 1.0 second. */
+FOUNDATION_EXTERN NSTimeInterval const FBLPromiseRetryDefaultDelayInterval NS_REFINED_FOR_SWIFT;
+
+@interface FBLPromise<Value>(RetryAdditions)
+
+typedef id __nullable (^FBLPromiseRetryWorkBlock)(void) NS_SWIFT_UNAVAILABLE("");
+typedef BOOL (^FBLPromiseRetryPredicateBlock)(NSInteger, NSError *) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously, or rejects with the same error after all retry attempts have
+ been exhausted. Defaults to `FBLPromiseRetryDefaultAttemptsCount` attempt(s) on rejection where the
+ `work` block is retried after a delay of `FBLPromiseRetryDefaultDelayInterval` second(s).
+
+ @param work A block that executes asynchronously on the default queue and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted.
+ */
++ (FBLPromise *)retry:(FBLPromiseRetryWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously on the given `queue`, or rejects with the same error after all
+ retry attempts have been exhausted. Defaults to `FBLPromiseRetryDefaultAttemptsCount` attempt(s) on
+ rejection where the `work` block is retried on the given `queue` after a delay of
+ `FBLPromiseRetryDefaultDelayInterval` second(s).
+
+ @param queue A queue to invoke the `work` block on.
+ @param work A block that executes asynchronously on the given `queue` and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted.
+ */
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                  retry:(FBLPromiseRetryWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously, or rejects with the same error after all retry attempts have
+ been exhausted.
+
+ @param count Max number of retry attempts. The `work` block will be executed once if the specified
+              count is less than or equal to zero.
+ @param work A block that executes asynchronously on the default queue and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted.
+ */
++ (FBLPromise *)attempts:(NSInteger)count
+                   retry:(FBLPromiseRetryWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously on the given `queue`, or rejects with the same error after all
+ retry attempts have been exhausted.
+
+ @param queue A queue to invoke the `work` block on.
+ @param count Max number of retry attempts. The `work` block will be executed once if the specified
+              count is less than or equal to zero.
+ @param work A block that executes asynchronously on the given `queue` and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted.
+ */
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue
+               attempts:(NSInteger)count
+                  retry:(FBLPromiseRetryWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously, or rejects with the same error after all retry attempts have
+ been exhausted. On rejection, the `work` block is retried after the given delay `interval` and will
+ continue to retry until the number of specified attempts have been exhausted or will bail early if
+ the given condition is not met.
+
+ @param count Max number of retry attempts. The `work` block will be executed once if the specified
+              count is less than or equal to zero.
+ @param interval Time to wait before the next retry attempt.
+ @param predicate Condition to check before the next retry attempt. The predicate block provides the
+                  the number of remaining retry attempts and the error that the promise was rejected
+                  with.
+ @param work A block that executes asynchronously on the default queue and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted or if
+         the given condition is not met.
+ */
++ (FBLPromise *)attempts:(NSInteger)count
+                   delay:(NSTimeInterval)interval
+               condition:(nullable FBLPromiseRetryPredicateBlock)predicate
+                   retry:(FBLPromiseRetryWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise that fulfills with the same value as the promise returned from `work`
+ block, which executes asynchronously on the given `queue`, or rejects with the same error after all
+ retry attempts have been exhausted. On rejection, the `work` block is retried after the given
+ delay `interval` and will continue to retry until the number of specified attempts have been
+ exhausted or will bail early if the given condition is not met.
+
+ @param queue A queue to invoke the `work` block on.
+ @param count Max number of retry attempts. The `work` block will be executed once if the specified
+              count is less than or equal to zero.
+ @param interval Time to wait before the next retry attempt.
+ @param predicate Condition to check before the next retry attempt. The predicate block provides the
+                  the number of remaining retry attempts and the error that the promise was rejected
+                  with.
+ @param work A block that executes asynchronously on the given `queue` and returns a value or an
+             error used to resolve the promise.
+ @return A new pending promise that fulfills with the same value as the promise returned from `work`
+         block, or rejects with the same error after all retry attempts have been exhausted or if
+         the given condition is not met.
+ */
++ (FBLPromise *)onQueue:(dispatch_queue_t)queue
+               attempts:(NSInteger)count
+                  delay:(NSTimeInterval)interval
+              condition:(nullable FBLPromiseRetryPredicateBlock)predicate
+                  retry:(FBLPromiseRetryWorkBlock)work NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise+Retry` operators.
+ Usage: FBLPromise.retry(^id { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_RetryAdditions)
+
++ (FBLPromise * (^)(FBLPromiseRetryWorkBlock))retry FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise * (^)(dispatch_queue_t, FBLPromiseRetryWorkBlock))retryOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise * (^)(NSInteger, NSTimeInterval, FBLPromiseRetryPredicateBlock __nullable,
+                    FBLPromiseRetryWorkBlock))retryAgain FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise * (^)(dispatch_queue_t, NSInteger, NSTimeInterval,
+                    FBLPromiseRetryPredicateBlock __nullable,
+                    FBLPromiseRetryWorkBlock))retryAgainOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Testing.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Testing.h
new file mode 100644
index 0000000..8478ae2
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Testing.h	
@@ -0,0 +1,57 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ Waits for all scheduled promises blocks.
+
+ @param timeout Maximum time to wait.
+ @return YES if all promises blocks have completed before the timeout and NO otherwise.
+ */
+FOUNDATION_EXTERN BOOL FBLWaitForPromisesWithTimeout(NSTimeInterval timeout) NS_REFINED_FOR_SWIFT;
+
+@interface FBLPromise<Value>(TestingAdditions)
+
+/**
+ Dispatch group for promises that is typically used to wait for all scheduled blocks.
+ */
+@property(class, nonatomic, readonly) dispatch_group_t dispatchGroup NS_REFINED_FOR_SWIFT;
+
+/**
+ Properties to get the current state of the promise.
+ */
+@property(nonatomic, readonly) BOOL isPending NS_REFINED_FOR_SWIFT;
+@property(nonatomic, readonly) BOOL isFulfilled NS_REFINED_FOR_SWIFT;
+@property(nonatomic, readonly) BOOL isRejected NS_REFINED_FOR_SWIFT;
+
+/**
+ Value the promise was fulfilled with.
+ Can be nil if the promise is still pending, was resolved with nil or after it has been rejected.
+ */
+@property(nonatomic, readonly, nullable) Value value NS_REFINED_FOR_SWIFT;
+
+/**
+ Error the promise was rejected with.
+ Can be nil if the promise is still pending or after it has been fulfilled.
+ */
+@property(nonatomic, readonly, nullable) NSError *error NS_REFINED_FOR_SWIFT;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Then.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Then.h
new file mode 100644
index 0000000..32027e6
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Then.h	
@@ -0,0 +1,63 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(ThenAdditions)
+
+typedef id __nullable (^FBLPromiseThenWorkBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise which eventually gets resolved with resolution returned from `work`
+ block: either value, error or another promise. The `work` block is executed asynchronously only
+ when the receiver is fulfilled. If receiver is rejected, the returned promise is also rejected with
+ the same error.
+
+ @param work A block to handle the value that receiver was fulfilled with.
+ @return A new pending promise to be resolved with resolution returned from the `work` block.
+ */
+- (FBLPromise *)then:(FBLPromiseThenWorkBlock)work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise which eventually gets resolved with resolution returned from `work`
+ block: either value, error or another promise. The `work` block is executed asynchronously when the
+ receiver is fulfilled. If receiver is rejected, the returned promise is also rejected with the same
+ error.
+
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to handle the value that receiver was fulfilled with.
+ @return A new pending promise to be resolved with resolution returned from the `work` block.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                   then:(FBLPromiseThenWorkBlock)work NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `then` operators.
+ Usage: promise.then(^id(id value) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_ThenAdditions)
+
+- (FBLPromise* (^)(FBLPromiseThenWorkBlock))then FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise* (^)(dispatch_queue_t, FBLPromiseThenWorkBlock))thenOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Timeout.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Timeout.h
new file mode 100644
index 0000000..184ba16
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Timeout.h	
@@ -0,0 +1,57 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(TimeoutAdditions)
+
+/**
+ Waits for a promise with the specified `timeout`.
+
+ @param interval Time to wait in seconds.
+ @return A new pending promise that gets either resolved with same resolution as the receiver or
+         rejected with `FBLPromiseErrorCodeTimedOut` error code in `FBLPromiseErrorDomain`.
+ */
+- (FBLPromise *)timeout:(NSTimeInterval)interval NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Waits for a promise with the specified `timeout`.
+
+ @param queue A queue to dispatch on.
+ @param interval Time to wait in seconds.
+ @return A new pending promise that gets either resolved with same resolution as the receiver or
+         rejected with `FBLPromiseErrorCodeTimedOut` error code in `FBLPromiseErrorDomain`.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+                timeout:(NSTimeInterval)interval NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `timeout` operators.
+ Usage: promise.timeout(...)
+ */
+@interface FBLPromise<Value>(DotSyntax_TimeoutAdditions)
+
+- (FBLPromise* (^)(NSTimeInterval))timeout FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise* (^)(dispatch_queue_t, NSTimeInterval))timeoutOn FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Validate.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Validate.h
new file mode 100644
index 0000000..9dfa2f1
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Validate.h	
@@ -0,0 +1,60 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FBLPromise<Value>(ValidateAdditions)
+
+typedef BOOL (^FBLPromiseValidateWorkBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Validates a fulfilled value or rejects the value if it can not be validated.
+
+ @param predicate An expression to validate.
+ @return A new pending promise that gets either resolved with same resolution as the receiver or
+         rejected with `FBLPromiseErrorCodeValidationFailure` error code in `FBLPromiseErrorDomain`.
+ */
+- (FBLPromise *)validate:(FBLPromiseValidateWorkBlock)predicate NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Validates a fulfilled value or rejects the value if it can not be validated.
+
+ @param queue A queue to dispatch on.
+ @param predicate An expression to validate.
+ @return A new pending promise that gets either resolved with same resolution as the receiver or
+         rejected with `FBLPromiseErrorCodeValidationFailure` error code in `FBLPromiseErrorDomain`.
+ */
+- (FBLPromise *)onQueue:(dispatch_queue_t)queue
+               validate:(FBLPromiseValidateWorkBlock)predicate NS_REFINED_FOR_SWIFT;
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `validate` operators.
+ Usage: promise.validate(^BOOL(id value) { ... })
+ */
+@interface FBLPromise<Value>(DotSyntax_ValidateAdditions)
+
+- (FBLPromise * (^)(FBLPromiseValidateWorkBlock))validate FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
+- (FBLPromise * (^)(dispatch_queue_t, FBLPromiseValidateWorkBlock))validateOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Wrap.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Wrap.h
new file mode 100644
index 0000000..664e1bb
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise+Wrap.h	
@@ -0,0 +1,316 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ Different types of completion handlers available to be wrapped with promise.
+ */
+typedef void (^FBLPromiseCompletion)(void) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseObjectCompletion)(id __nullable) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseErrorCompletion)(NSError* __nullable) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseObjectOrErrorCompletion)(id __nullable, NSError* __nullable)
+    NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseErrorOrObjectCompletion)(NSError* __nullable, id __nullable)
+    NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromise2ObjectsOrErrorCompletion)(id __nullable, id __nullable,
+                                                    NSError* __nullable) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseBoolCompletion)(BOOL) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseBoolOrErrorCompletion)(BOOL, NSError* __nullable) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseIntegerCompletion)(NSInteger) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseIntegerOrErrorCompletion)(NSInteger, NSError* __nullable)
+    NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseDoubleCompletion)(double) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseDoubleOrErrorCompletion)(double, NSError* __nullable)
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Provides an easy way to convert methods that use common callback patterns into promises.
+ */
+@interface FBLPromise<Value>(WrapAdditions)
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with `nil` when completion handler is invoked.
+ */
++ (instancetype)wrapCompletion:(void (^)(FBLPromiseCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with `nil` when completion handler is invoked.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+         wrapCompletion:(void (^)(FBLPromiseCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an object provided by completion handler.
+ */
++ (instancetype)wrapObjectCompletion:(void (^)(FBLPromiseObjectCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an object provided by completion handler.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapObjectCompletion:(void (^)(FBLPromiseObjectCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an error provided by completion handler.
+ If error is `nil`, fulfills with `nil`, otherwise rejects with the error.
+ */
++ (instancetype)wrapErrorCompletion:(void (^)(FBLPromiseErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an error provided by completion handler.
+ If error is `nil`, fulfills with `nil`, otherwise rejects with the error.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapErrorCompletion:(void (^)(FBLPromiseErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an object provided by completion handler if error is `nil`.
+ Otherwise, rejects with the error.
+ */
++ (instancetype)wrapObjectOrErrorCompletion:
+    (void (^)(FBLPromiseObjectOrErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an object provided by completion handler if error is `nil`.
+ Otherwise, rejects with the error.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapObjectOrErrorCompletion:(void (^)(FBLPromiseObjectOrErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an error or object provided by completion handler. If error
+ is not `nil`, rejects with the error.
+ */
++ (instancetype)wrapErrorOrObjectCompletion:
+    (void (^)(FBLPromiseErrorOrObjectCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an error or object provided by completion handler. If error
+ is not `nil`, rejects with the error.
+ */
++ (instancetype)onQueue:(dispatch_queue_t)queue
+    wrapErrorOrObjectCompletion:(void (^)(FBLPromiseErrorOrObjectCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an array of objects provided by completion handler in order
+ if error is `nil`. Otherwise, rejects with the error.
+ */
++ (FBLPromise<NSArray*>*)wrap2ObjectsOrErrorCompletion:
+    (void (^)(FBLPromise2ObjectsOrErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an array of objects provided by completion handler in order
+ if error is `nil`. Otherwise, rejects with the error.
+ */
++ (FBLPromise<NSArray*>*)onQueue:(dispatch_queue_t)queue
+    wrap2ObjectsOrErrorCompletion:(void (^)(FBLPromise2ObjectsOrErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping YES/NO.
+ */
++ (FBLPromise<NSNumber*>*)wrapBoolCompletion:(void (^)(FBLPromiseBoolCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping YES/NO.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+               wrapBoolCompletion:(void (^)(FBLPromiseBoolCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping YES/NO when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)wrapBoolOrErrorCompletion:
+    (void (^)(FBLPromiseBoolOrErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping YES/NO when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+        wrapBoolOrErrorCompletion:(void (^)(FBLPromiseBoolOrErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping an integer.
+ */
++ (FBLPromise<NSNumber*>*)wrapIntegerCompletion:(void (^)(FBLPromiseIntegerCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping an integer.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+            wrapIntegerCompletion:(void (^)(FBLPromiseIntegerCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping an integer when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)wrapIntegerOrErrorCompletion:
+    (void (^)(FBLPromiseIntegerOrErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping an integer when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+     wrapIntegerOrErrorCompletion:(void (^)(FBLPromiseIntegerOrErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping a double.
+ */
++ (FBLPromise<NSNumber*>*)wrapDoubleCompletion:(void (^)(FBLPromiseDoubleCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping a double.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+             wrapDoubleCompletion:(void (^)(FBLPromiseDoubleCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping a double when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)wrapDoubleOrErrorCompletion:
+    (void (^)(FBLPromiseDoubleOrErrorCompletion handler))work NS_SWIFT_UNAVAILABLE("");
+
+/**
+ @param queue A queue to invoke the `work` block on.
+ @param work A block to perform any operations needed to resolve the promise.
+ @returns A promise that resolves with an `NSNumber` wrapping a double when error is `nil`.
+ Otherwise rejects with the error.
+ */
++ (FBLPromise<NSNumber*>*)onQueue:(dispatch_queue_t)queue
+      wrapDoubleOrErrorCompletion:(void (^)(FBLPromiseDoubleOrErrorCompletion handler))work
+    NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+/**
+ Convenience dot-syntax wrappers for `FBLPromise` `wrap` operators.
+ Usage: FBLPromise.wrapCompletion(^(FBLPromiseCompletion handler) {...})
+ */
+@interface FBLPromise<Value>(DotSyntax_WrapAdditions)
+
++ (FBLPromise* (^)(void (^)(FBLPromiseCompletion)))wrapCompletion FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t, void (^)(FBLPromiseCompletion)))wrapCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(void (^)(FBLPromiseObjectCompletion)))wrapObjectCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t, void (^)(FBLPromiseObjectCompletion)))wrapObjectCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(void (^)(FBLPromiseErrorCompletion)))wrapErrorCompletion FBL_PROMISES_DOT_SYNTAX
+    NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t, void (^)(FBLPromiseErrorCompletion)))wrapErrorCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(void (^)(FBLPromiseObjectOrErrorCompletion)))wrapObjectOrErrorCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t,
+                   void (^)(FBLPromiseObjectOrErrorCompletion)))wrapObjectOrErrorCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(void (^)(FBLPromiseErrorOrObjectCompletion)))wrapErrorOrObjectCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise* (^)(dispatch_queue_t,
+                   void (^)(FBLPromiseErrorOrObjectCompletion)))wrapErrorOrObjectCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSArray*>* (^)(void (^)(FBLPromise2ObjectsOrErrorCompletion)))
+    wrap2ObjectsOrErrorCompletion FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSArray*>* (^)(dispatch_queue_t, void (^)(FBLPromise2ObjectsOrErrorCompletion)))
+    wrap2ObjectsOrErrorCompletionOn FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseBoolCompletion)))wrapBoolCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t,
+                              void (^)(FBLPromiseBoolCompletion)))wrapBoolCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseBoolOrErrorCompletion)))wrapBoolOrErrorCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t,
+                              void (^)(FBLPromiseBoolOrErrorCompletion)))wrapBoolOrErrorCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseIntegerCompletion)))wrapIntegerCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t,
+                              void (^)(FBLPromiseIntegerCompletion)))wrapIntegerCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseIntegerOrErrorCompletion)))
+    wrapIntegerOrErrorCompletion FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t, void (^)(FBLPromiseIntegerOrErrorCompletion)))
+    wrapIntegerOrErrorCompletionOn FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseDoubleCompletion)))wrapDoubleCompletion
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t,
+                              void (^)(FBLPromiseDoubleCompletion)))wrapDoubleCompletionOn
+    FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(void (^)(FBLPromiseDoubleOrErrorCompletion)))
+    wrapDoubleOrErrorCompletion FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (FBLPromise<NSNumber*>* (^)(dispatch_queue_t, void (^)(FBLPromiseDoubleOrErrorCompletion)))
+    wrapDoubleOrErrorCompletionOn FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise.h
new file mode 100644
index 0000000..b1380dc
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromise.h	
@@ -0,0 +1,93 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromiseError.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ Promises synchronization construct in Objective-C.
+ */
+@interface FBLPromise<__covariant Value> : NSObject
+
+/**
+ Default dispatch queue used for `FBLPromise`, which is `main` if a queue is not specified.
+ */
+@property(class) dispatch_queue_t defaultDispatchQueue NS_REFINED_FOR_SWIFT;
+
+/**
+ Creates a pending promise.
+ */
++ (instancetype)pendingPromise NS_REFINED_FOR_SWIFT;
+
+/**
+ Creates a resolved promise.
+
+ @param resolution An object to resolve the promise with: either a value or an error.
+ @return A new resolved promise.
+ */
++ (instancetype)resolvedWith:(nullable id)resolution NS_REFINED_FOR_SWIFT;
+
+/**
+ Synchronously fulfills the promise with a value.
+
+ @param value An arbitrary value to fulfill the promise with, including `nil`.
+ */
+- (void)fulfill:(nullable Value)value NS_REFINED_FOR_SWIFT;
+
+/**
+ Synchronously rejects the promise with an error.
+
+ @param error An error to reject the promise with.
+ */
+- (void)reject:(NSError *)error NS_REFINED_FOR_SWIFT;
+
++ (instancetype)new NS_UNAVAILABLE;
+- (instancetype)init NS_UNAVAILABLE;
+@end
+
+@interface FBLPromise<Value>()
+
+/**
+ Adds an object to the set of pending objects to keep strongly while the promise is pending.
+ Used by the Swift wrappers to keep them alive until the underlying ObjC promise is resolved.
+
+ @param object An object to add.
+ */
+- (void)addPendingObject:(id)object NS_REFINED_FOR_SWIFT;
+
+@end
+
+#ifdef FBL_PROMISES_DOT_SYNTAX_IS_DEPRECATED
+#define FBL_PROMISES_DOT_SYNTAX __attribute__((deprecated))
+#else
+#define FBL_PROMISES_DOT_SYNTAX
+#endif
+
+@interface FBLPromise<Value>(DotSyntaxAdditions)
+
+/**
+ Convenience dot-syntax wrappers for FBLPromise.
+ Usage: FBLPromise.pending()
+        FBLPromise.resolved(value)
+
+ */
++ (instancetype (^)(void))pending FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
++ (instancetype (^)(id __nullable))resolved FBL_PROMISES_DOT_SYNTAX NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromiseError.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromiseError.h
new file mode 100644
index 0000000..d37af53
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromiseError.h	
@@ -0,0 +1,43 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+FOUNDATION_EXTERN NSErrorDomain const FBLPromiseErrorDomain NS_REFINED_FOR_SWIFT;
+
+/**
+ Possible error codes in `FBLPromiseErrorDomain`.
+ */
+typedef NS_ENUM(NSInteger, FBLPromiseErrorCode) {
+  /** Promise failed to resolve in time. */
+  FBLPromiseErrorCodeTimedOut = 1,
+  /** Validation predicate returned false. */
+  FBLPromiseErrorCodeValidationFailure = 2,
+} NS_REFINED_FOR_SWIFT;
+
+NS_INLINE BOOL FBLPromiseErrorIsTimedOut(NSError *error) NS_SWIFT_UNAVAILABLE("") {
+  return error.domain == FBLPromiseErrorDomain &&
+         error.code == FBLPromiseErrorCodeTimedOut;
+}
+
+NS_INLINE BOOL FBLPromiseErrorIsValidationFailure(NSError *error) NS_SWIFT_UNAVAILABLE("") {
+  return error.domain == FBLPromiseErrorDomain &&
+         error.code == FBLPromiseErrorCodeValidationFailure;
+}
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromisePrivate.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromisePrivate.h
new file mode 100644
index 0000000..7a132f2
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromisePrivate.h	
@@ -0,0 +1,66 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+Testing.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ Miscellaneous low-level private interfaces available to extend standard FBLPromise functionality.
+ */
+@interface FBLPromise<Value>()
+
+typedef void (^FBLPromiseOnFulfillBlock)(Value __nullable value) NS_SWIFT_UNAVAILABLE("");
+typedef void (^FBLPromiseOnRejectBlock)(NSError *error) NS_SWIFT_UNAVAILABLE("");
+typedef id __nullable (^__nullable FBLPromiseChainedFulfillBlock)(Value __nullable value)
+    NS_SWIFT_UNAVAILABLE("");
+typedef id __nullable (^__nullable FBLPromiseChainedRejectBlock)(NSError *error)
+    NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a pending promise.
+ */
+- (instancetype)initPending NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Creates a resolved promise.
+
+ @param resolution An object to resolve the promise with: either a value or an error.
+ @return A new resolved promise.
+ */
+- (instancetype)initWithResolution:(nullable id)resolution NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Invokes `fulfill` and `reject` blocks on `queue` when the receiver gets either fulfilled or
+ rejected respectively.
+ */
+- (void)observeOnQueue:(dispatch_queue_t)queue
+               fulfill:(FBLPromiseOnFulfillBlock)onFulfill
+                reject:(FBLPromiseOnRejectBlock)onReject NS_SWIFT_UNAVAILABLE("");
+
+/**
+ Returns a new promise which gets resolved with the return value of `chainedFulfill` or
+ `chainedReject` blocks respectively. The blocks are invoked when the receiver gets either
+ fulfilled or rejected. If `nil` is passed to either block arg, the returned promise is resolved
+ with the same resolution as the receiver.
+ */
+- (FBLPromise *)chainOnQueue:(dispatch_queue_t)queue
+              chainedFulfill:(FBLPromiseChainedFulfillBlock)chainedFulfill
+               chainedReject:(FBLPromiseChainedRejectBlock)chainedReject NS_SWIFT_UNAVAILABLE("");
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromises.h b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromises.h
new file mode 100644
index 0000000..2d90bad
--- /dev/null
+++ b/ChattingApp 000/Pods/PromisesObjC/Sources/FBLPromises/include/FBLPromises.h	
@@ -0,0 +1,32 @@
+/**
+ Copyright 2018 Google Inc. All rights reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "FBLPromise+All.h"
+#import "FBLPromise+Always.h"
+#import "FBLPromise+Any.h"
+#import "FBLPromise+Async.h"
+#import "FBLPromise+Await.h"
+#import "FBLPromise+Catch.h"
+#import "FBLPromise+Delay.h"
+#import "FBLPromise+Do.h"
+#import "FBLPromise+Race.h"
+#import "FBLPromise+Recover.h"
+#import "FBLPromise+Reduce.h"
+#import "FBLPromise+Retry.h"
+#import "FBLPromise+Then.h"
+#import "FBLPromise+Timeout.h"
+#import "FBLPromise+Validate.h"
+#import "FBLPromise+Wrap.h"
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-Info.plist b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-Info.plist
new file mode 100644
index 0000000..294cbb9
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>0.0.7</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-dummy.m b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-dummy.m
new file mode 100644
index 0000000..162155d
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_BoringSSL_GRPC : NSObject
+@end
+@implementation PodsDummy_BoringSSL_GRPC
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-prefix.pch b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-prefix.pch
new file mode 100644
index 0000000..1098316
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC-prefix.pch	
@@ -0,0 +1,3289 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#define a2i_GENERAL_NAME GRPC_SHADOW_a2i_GENERAL_NAME
+#define a2i_ipadd GRPC_SHADOW_a2i_ipadd
+#define a2i_IPADDRESS GRPC_SHADOW_a2i_IPADDRESS
+#define a2i_IPADDRESS_NC GRPC_SHADOW_a2i_IPADDRESS_NC
+#define abi_test_bad_unwind_temporary GRPC_SHADOW_abi_test_bad_unwind_temporary
+#define abi_test_bad_unwind_wrong_register GRPC_SHADOW_abi_test_bad_unwind_wrong_register
+#define abi_test_clobber_r10 GRPC_SHADOW_abi_test_clobber_r10
+#define abi_test_clobber_r11 GRPC_SHADOW_abi_test_clobber_r11
+#define abi_test_clobber_r12 GRPC_SHADOW_abi_test_clobber_r12
+#define abi_test_clobber_r13 GRPC_SHADOW_abi_test_clobber_r13
+#define abi_test_clobber_r14 GRPC_SHADOW_abi_test_clobber_r14
+#define abi_test_clobber_r15 GRPC_SHADOW_abi_test_clobber_r15
+#define abi_test_clobber_r8 GRPC_SHADOW_abi_test_clobber_r8
+#define abi_test_clobber_r9 GRPC_SHADOW_abi_test_clobber_r9
+#define abi_test_clobber_rax GRPC_SHADOW_abi_test_clobber_rax
+#define abi_test_clobber_rbp GRPC_SHADOW_abi_test_clobber_rbp
+#define abi_test_clobber_rbx GRPC_SHADOW_abi_test_clobber_rbx
+#define abi_test_clobber_rcx GRPC_SHADOW_abi_test_clobber_rcx
+#define abi_test_clobber_rdi GRPC_SHADOW_abi_test_clobber_rdi
+#define abi_test_clobber_rdx GRPC_SHADOW_abi_test_clobber_rdx
+#define abi_test_clobber_rsi GRPC_SHADOW_abi_test_clobber_rsi
+#define abi_test_clobber_xmm0 GRPC_SHADOW_abi_test_clobber_xmm0
+#define abi_test_clobber_xmm1 GRPC_SHADOW_abi_test_clobber_xmm1
+#define abi_test_clobber_xmm10 GRPC_SHADOW_abi_test_clobber_xmm10
+#define abi_test_clobber_xmm11 GRPC_SHADOW_abi_test_clobber_xmm11
+#define abi_test_clobber_xmm12 GRPC_SHADOW_abi_test_clobber_xmm12
+#define abi_test_clobber_xmm13 GRPC_SHADOW_abi_test_clobber_xmm13
+#define abi_test_clobber_xmm14 GRPC_SHADOW_abi_test_clobber_xmm14
+#define abi_test_clobber_xmm15 GRPC_SHADOW_abi_test_clobber_xmm15
+#define abi_test_clobber_xmm2 GRPC_SHADOW_abi_test_clobber_xmm2
+#define abi_test_clobber_xmm3 GRPC_SHADOW_abi_test_clobber_xmm3
+#define abi_test_clobber_xmm4 GRPC_SHADOW_abi_test_clobber_xmm4
+#define abi_test_clobber_xmm5 GRPC_SHADOW_abi_test_clobber_xmm5
+#define abi_test_clobber_xmm6 GRPC_SHADOW_abi_test_clobber_xmm6
+#define abi_test_clobber_xmm7 GRPC_SHADOW_abi_test_clobber_xmm7
+#define abi_test_clobber_xmm8 GRPC_SHADOW_abi_test_clobber_xmm8
+#define abi_test_clobber_xmm9 GRPC_SHADOW_abi_test_clobber_xmm9
+#define abi_test_get_and_clear_direction_flag GRPC_SHADOW_abi_test_get_and_clear_direction_flag
+#define abi_test_set_direction_flag GRPC_SHADOW_abi_test_set_direction_flag
+#define abi_test_trampoline GRPC_SHADOW_abi_test_trampoline
+#define abi_test_unwind_return GRPC_SHADOW_abi_test_unwind_return
+#define abi_test_unwind_start GRPC_SHADOW_abi_test_unwind_start
+#define abi_test_unwind_stop GRPC_SHADOW_abi_test_unwind_stop
+#define ACCESS_DESCRIPTION_free GRPC_SHADOW_ACCESS_DESCRIPTION_free
+#define ACCESS_DESCRIPTION_it GRPC_SHADOW_ACCESS_DESCRIPTION_it
+#define ACCESS_DESCRIPTION_new GRPC_SHADOW_ACCESS_DESCRIPTION_new
+#define aes128gcmsiv_aes_ks GRPC_SHADOW_aes128gcmsiv_aes_ks
+#define aes128gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes128gcmsiv_aes_ks_enc_x1
+#define aes128gcmsiv_dec GRPC_SHADOW_aes128gcmsiv_dec
+#define aes128gcmsiv_ecb_enc_block GRPC_SHADOW_aes128gcmsiv_ecb_enc_block
+#define aes128gcmsiv_enc_msg_x4 GRPC_SHADOW_aes128gcmsiv_enc_msg_x4
+#define aes128gcmsiv_enc_msg_x8 GRPC_SHADOW_aes128gcmsiv_enc_msg_x8
+#define aes128gcmsiv_kdf GRPC_SHADOW_aes128gcmsiv_kdf
+#define aes256gcmsiv_aes_ks GRPC_SHADOW_aes256gcmsiv_aes_ks
+#define aes256gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes256gcmsiv_aes_ks_enc_x1
+#define aes256gcmsiv_dec GRPC_SHADOW_aes256gcmsiv_dec
+#define aes256gcmsiv_ecb_enc_block GRPC_SHADOW_aes256gcmsiv_ecb_enc_block
+#define aes256gcmsiv_enc_msg_x4 GRPC_SHADOW_aes256gcmsiv_enc_msg_x4
+#define aes256gcmsiv_enc_msg_x8 GRPC_SHADOW_aes256gcmsiv_enc_msg_x8
+#define aes256gcmsiv_kdf GRPC_SHADOW_aes256gcmsiv_kdf
+#define AES_cbc_encrypt GRPC_SHADOW_AES_cbc_encrypt
+#define AES_cfb128_encrypt GRPC_SHADOW_AES_cfb128_encrypt
+#define AES_CMAC GRPC_SHADOW_AES_CMAC
+#define AES_ctr128_encrypt GRPC_SHADOW_AES_ctr128_encrypt
+#define aes_ctr_set_key GRPC_SHADOW_aes_ctr_set_key
+#define AES_decrypt GRPC_SHADOW_AES_decrypt
+#define AES_ecb_encrypt GRPC_SHADOW_AES_ecb_encrypt
+#define AES_encrypt GRPC_SHADOW_AES_encrypt
+#define aesgcmsiv_htable6_init GRPC_SHADOW_aesgcmsiv_htable6_init
+#define aesgcmsiv_htable_init GRPC_SHADOW_aesgcmsiv_htable_init
+#define aesgcmsiv_htable_polyval GRPC_SHADOW_aesgcmsiv_htable_polyval
+#define aesgcmsiv_polyval_horner GRPC_SHADOW_aesgcmsiv_polyval_horner
+#define aes_hw_cbc_encrypt GRPC_SHADOW_aes_hw_cbc_encrypt
+#define aes_hw_ctr32_encrypt_blocks GRPC_SHADOW_aes_hw_ctr32_encrypt_blocks
+#define aes_hw_decrypt GRPC_SHADOW_aes_hw_decrypt
+#define aes_hw_ecb_encrypt GRPC_SHADOW_aes_hw_ecb_encrypt
+#define aes_hw_encrypt GRPC_SHADOW_aes_hw_encrypt
+#define aes_hw_set_decrypt_key GRPC_SHADOW_aes_hw_set_decrypt_key
+#define aes_hw_set_encrypt_key GRPC_SHADOW_aes_hw_set_encrypt_key
+#define aesni_gcm_decrypt GRPC_SHADOW_aesni_gcm_decrypt
+#define aesni_gcm_encrypt GRPC_SHADOW_aesni_gcm_encrypt
+#define aes_nohw_cbc_encrypt GRPC_SHADOW_aes_nohw_cbc_encrypt
+#define aes_nohw_ctr32_encrypt_blocks GRPC_SHADOW_aes_nohw_ctr32_encrypt_blocks
+#define aes_nohw_decrypt GRPC_SHADOW_aes_nohw_decrypt
+#define aes_nohw_encrypt GRPC_SHADOW_aes_nohw_encrypt
+#define aes_nohw_set_decrypt_key GRPC_SHADOW_aes_nohw_set_decrypt_key
+#define aes_nohw_set_encrypt_key GRPC_SHADOW_aes_nohw_set_encrypt_key
+#define AES_ofb128_encrypt GRPC_SHADOW_AES_ofb128_encrypt
+#define AES_set_decrypt_key GRPC_SHADOW_AES_set_decrypt_key
+#define AES_set_encrypt_key GRPC_SHADOW_AES_set_encrypt_key
+#define AES_unwrap_key GRPC_SHADOW_AES_unwrap_key
+#define AES_unwrap_key_padded GRPC_SHADOW_AES_unwrap_key_padded
+#define AES_wrap_key GRPC_SHADOW_AES_wrap_key
+#define AES_wrap_key_padded GRPC_SHADOW_AES_wrap_key_padded
+#define ASN1_ANY_it GRPC_SHADOW_ASN1_ANY_it
+#define ASN1_BIT_STRING_check GRPC_SHADOW_ASN1_BIT_STRING_check
+#define ASN1_BIT_STRING_free GRPC_SHADOW_ASN1_BIT_STRING_free
+#define ASN1_BIT_STRING_get_bit GRPC_SHADOW_ASN1_BIT_STRING_get_bit
+#define ASN1_BIT_STRING_it GRPC_SHADOW_ASN1_BIT_STRING_it
+#define ASN1_BIT_STRING_new GRPC_SHADOW_ASN1_BIT_STRING_new
+#define ASN1_BIT_STRING_set GRPC_SHADOW_ASN1_BIT_STRING_set
+#define ASN1_BIT_STRING_set_bit GRPC_SHADOW_ASN1_BIT_STRING_set_bit
+#define ASN1_BMPSTRING_free GRPC_SHADOW_ASN1_BMPSTRING_free
+#define ASN1_BMPSTRING_it GRPC_SHADOW_ASN1_BMPSTRING_it
+#define ASN1_BMPSTRING_new GRPC_SHADOW_ASN1_BMPSTRING_new
+#define ASN1_BOOLEAN_it GRPC_SHADOW_ASN1_BOOLEAN_it
+#define ASN1_digest GRPC_SHADOW_ASN1_digest
+#define asn1_do_adb GRPC_SHADOW_asn1_do_adb
+#define asn1_enc_free GRPC_SHADOW_asn1_enc_free
+#define asn1_enc_init GRPC_SHADOW_asn1_enc_init
+#define asn1_enc_restore GRPC_SHADOW_asn1_enc_restore
+#define asn1_enc_save GRPC_SHADOW_asn1_enc_save
+#define ASN1_ENUMERATED_free GRPC_SHADOW_ASN1_ENUMERATED_free
+#define ASN1_ENUMERATED_get GRPC_SHADOW_ASN1_ENUMERATED_get
+#define ASN1_ENUMERATED_it GRPC_SHADOW_ASN1_ENUMERATED_it
+#define ASN1_ENUMERATED_new GRPC_SHADOW_ASN1_ENUMERATED_new
+#define ASN1_ENUMERATED_set GRPC_SHADOW_ASN1_ENUMERATED_set
+#define ASN1_ENUMERATED_to_BN GRPC_SHADOW_ASN1_ENUMERATED_to_BN
+#define asn1_ex_c2i GRPC_SHADOW_asn1_ex_c2i
+#define asn1_ex_i2c GRPC_SHADOW_asn1_ex_i2c
+#define ASN1_FBOOLEAN_it GRPC_SHADOW_ASN1_FBOOLEAN_it
+#define ASN1_GENERALIZEDTIME_adj GRPC_SHADOW_ASN1_GENERALIZEDTIME_adj
+#define ASN1_GENERALIZEDTIME_check GRPC_SHADOW_ASN1_GENERALIZEDTIME_check
+#define ASN1_GENERALIZEDTIME_free GRPC_SHADOW_ASN1_GENERALIZEDTIME_free
+#define ASN1_GENERALIZEDTIME_it GRPC_SHADOW_ASN1_GENERALIZEDTIME_it
+#define ASN1_GENERALIZEDTIME_new GRPC_SHADOW_ASN1_GENERALIZEDTIME_new
+#define ASN1_GENERALIZEDTIME_print GRPC_SHADOW_ASN1_GENERALIZEDTIME_print
+#define ASN1_GENERALIZEDTIME_set GRPC_SHADOW_ASN1_GENERALIZEDTIME_set
+#define ASN1_GENERALIZEDTIME_set_string GRPC_SHADOW_ASN1_GENERALIZEDTIME_set_string
+#define asn1_generalizedtime_to_tm GRPC_SHADOW_asn1_generalizedtime_to_tm
+#define ASN1_GENERALSTRING_free GRPC_SHADOW_ASN1_GENERALSTRING_free
+#define ASN1_GENERALSTRING_it GRPC_SHADOW_ASN1_GENERALSTRING_it
+#define ASN1_GENERALSTRING_new GRPC_SHADOW_ASN1_GENERALSTRING_new
+#define ASN1_generate_nconf GRPC_SHADOW_ASN1_generate_nconf
+#define ASN1_generate_v3 GRPC_SHADOW_ASN1_generate_v3
+#define asn1_get_choice_selector GRPC_SHADOW_asn1_get_choice_selector
+#define asn1_get_field_ptr GRPC_SHADOW_asn1_get_field_ptr
+#define ASN1_get_object GRPC_SHADOW_ASN1_get_object
+#define ASN1_IA5STRING_free GRPC_SHADOW_ASN1_IA5STRING_free
+#define ASN1_IA5STRING_it GRPC_SHADOW_ASN1_IA5STRING_it
+#define ASN1_IA5STRING_new GRPC_SHADOW_ASN1_IA5STRING_new
+#define ASN1_INTEGER_cmp GRPC_SHADOW_ASN1_INTEGER_cmp
+#define ASN1_INTEGER_dup GRPC_SHADOW_ASN1_INTEGER_dup
+#define ASN1_INTEGER_free GRPC_SHADOW_ASN1_INTEGER_free
+#define ASN1_INTEGER_get GRPC_SHADOW_ASN1_INTEGER_get
+#define ASN1_INTEGER_it GRPC_SHADOW_ASN1_INTEGER_it
+#define ASN1_INTEGER_new GRPC_SHADOW_ASN1_INTEGER_new
+#define ASN1_INTEGER_set GRPC_SHADOW_ASN1_INTEGER_set
+#define ASN1_INTEGER_set_uint64 GRPC_SHADOW_ASN1_INTEGER_set_uint64
+#define ASN1_INTEGER_to_BN GRPC_SHADOW_ASN1_INTEGER_to_BN
+#define asn1_item_combine_free GRPC_SHADOW_asn1_item_combine_free
+#define ASN1_item_d2i GRPC_SHADOW_ASN1_item_d2i
+#define ASN1_item_d2i_bio GRPC_SHADOW_ASN1_item_d2i_bio
+#define ASN1_item_d2i_fp GRPC_SHADOW_ASN1_item_d2i_fp
+#define ASN1_item_digest GRPC_SHADOW_ASN1_item_digest
+#define ASN1_item_dup GRPC_SHADOW_ASN1_item_dup
+#define ASN1_item_ex_d2i GRPC_SHADOW_ASN1_item_ex_d2i
+#define ASN1_item_ex_free GRPC_SHADOW_ASN1_item_ex_free
+#define ASN1_item_ex_i2d GRPC_SHADOW_ASN1_item_ex_i2d
+#define ASN1_item_ex_new GRPC_SHADOW_ASN1_item_ex_new
+#define ASN1_item_free GRPC_SHADOW_ASN1_item_free
+#define ASN1_item_i2d GRPC_SHADOW_ASN1_item_i2d
+#define ASN1_item_i2d_bio GRPC_SHADOW_ASN1_item_i2d_bio
+#define ASN1_item_i2d_fp GRPC_SHADOW_ASN1_item_i2d_fp
+#define ASN1_item_ndef_i2d GRPC_SHADOW_ASN1_item_ndef_i2d
+#define ASN1_item_new GRPC_SHADOW_ASN1_item_new
+#define ASN1_item_pack GRPC_SHADOW_ASN1_item_pack
+#define ASN1_item_sign GRPC_SHADOW_ASN1_item_sign
+#define ASN1_item_sign_ctx GRPC_SHADOW_ASN1_item_sign_ctx
+#define ASN1_item_unpack GRPC_SHADOW_ASN1_item_unpack
+#define ASN1_item_verify GRPC_SHADOW_ASN1_item_verify
+#define ASN1_mbstring_copy GRPC_SHADOW_ASN1_mbstring_copy
+#define ASN1_mbstring_ncopy GRPC_SHADOW_ASN1_mbstring_ncopy
+#define ASN1_NULL_free GRPC_SHADOW_ASN1_NULL_free
+#define ASN1_NULL_it GRPC_SHADOW_ASN1_NULL_it
+#define ASN1_NULL_new GRPC_SHADOW_ASN1_NULL_new
+#define ASN1_OBJECT_create GRPC_SHADOW_ASN1_OBJECT_create
+#define ASN1_OBJECT_free GRPC_SHADOW_ASN1_OBJECT_free
+#define ASN1_OBJECT_it GRPC_SHADOW_ASN1_OBJECT_it
+#define ASN1_OBJECT_new GRPC_SHADOW_ASN1_OBJECT_new
+#define ASN1_object_size GRPC_SHADOW_ASN1_object_size
+#define ASN1_OCTET_STRING_cmp GRPC_SHADOW_ASN1_OCTET_STRING_cmp
+#define ASN1_OCTET_STRING_dup GRPC_SHADOW_ASN1_OCTET_STRING_dup
+#define ASN1_OCTET_STRING_free GRPC_SHADOW_ASN1_OCTET_STRING_free
+#define ASN1_OCTET_STRING_it GRPC_SHADOW_ASN1_OCTET_STRING_it
+#define ASN1_OCTET_STRING_NDEF_it GRPC_SHADOW_ASN1_OCTET_STRING_NDEF_it
+#define ASN1_OCTET_STRING_new GRPC_SHADOW_ASN1_OCTET_STRING_new
+#define ASN1_OCTET_STRING_set GRPC_SHADOW_ASN1_OCTET_STRING_set
+#define ASN1_primitive_free GRPC_SHADOW_ASN1_primitive_free
+#define ASN1_primitive_new GRPC_SHADOW_ASN1_primitive_new
+#define ASN1_PRINTABLE_free GRPC_SHADOW_ASN1_PRINTABLE_free
+#define ASN1_PRINTABLE_it GRPC_SHADOW_ASN1_PRINTABLE_it
+#define ASN1_PRINTABLE_new GRPC_SHADOW_ASN1_PRINTABLE_new
+#define ASN1_PRINTABLESTRING_free GRPC_SHADOW_ASN1_PRINTABLESTRING_free
+#define ASN1_PRINTABLESTRING_it GRPC_SHADOW_ASN1_PRINTABLESTRING_it
+#define ASN1_PRINTABLESTRING_new GRPC_SHADOW_ASN1_PRINTABLESTRING_new
+#define ASN1_PRINTABLE_type GRPC_SHADOW_ASN1_PRINTABLE_type
+#define ASN1_put_eoc GRPC_SHADOW_ASN1_put_eoc
+#define ASN1_put_object GRPC_SHADOW_ASN1_put_object
+#define asn1_refcount_dec_and_test_zero GRPC_SHADOW_asn1_refcount_dec_and_test_zero
+#define asn1_refcount_set_one GRPC_SHADOW_asn1_refcount_set_one
+#define ASN1_SEQUENCE_ANY_it GRPC_SHADOW_ASN1_SEQUENCE_ANY_it
+#define ASN1_SEQUENCE_it GRPC_SHADOW_ASN1_SEQUENCE_it
+#define ASN1_SET_ANY_it GRPC_SHADOW_ASN1_SET_ANY_it
+#define asn1_set_choice_selector GRPC_SHADOW_asn1_set_choice_selector
+#define ASN1_STRING_cmp GRPC_SHADOW_ASN1_STRING_cmp
+#define ASN1_STRING_copy GRPC_SHADOW_ASN1_STRING_copy
+#define ASN1_STRING_data GRPC_SHADOW_ASN1_STRING_data
+#define ASN1_STRING_dup GRPC_SHADOW_ASN1_STRING_dup
+#define ASN1_STRING_free GRPC_SHADOW_ASN1_STRING_free
+#define ASN1_STRING_get0_data GRPC_SHADOW_ASN1_STRING_get0_data
+#define ASN1_STRING_get_default_mask GRPC_SHADOW_ASN1_STRING_get_default_mask
+#define ASN1_STRING_length GRPC_SHADOW_ASN1_STRING_length
+#define ASN1_STRING_length_set GRPC_SHADOW_ASN1_STRING_length_set
+#define ASN1_STRING_new GRPC_SHADOW_ASN1_STRING_new
+#define ASN1_STRING_print GRPC_SHADOW_ASN1_STRING_print
+#define ASN1_STRING_print_ex GRPC_SHADOW_ASN1_STRING_print_ex
+#define ASN1_STRING_print_ex_fp GRPC_SHADOW_ASN1_STRING_print_ex_fp
+#define ASN1_STRING_set GRPC_SHADOW_ASN1_STRING_set
+#define ASN1_STRING_set0 GRPC_SHADOW_ASN1_STRING_set0
+#define ASN1_STRING_set_by_NID GRPC_SHADOW_ASN1_STRING_set_by_NID
+#define ASN1_STRING_set_default_mask GRPC_SHADOW_ASN1_STRING_set_default_mask
+#define ASN1_STRING_set_default_mask_asc GRPC_SHADOW_ASN1_STRING_set_default_mask_asc
+#define ASN1_STRING_TABLE_add GRPC_SHADOW_ASN1_STRING_TABLE_add
+#define ASN1_STRING_TABLE_cleanup GRPC_SHADOW_ASN1_STRING_TABLE_cleanup
+#define ASN1_STRING_TABLE_get GRPC_SHADOW_ASN1_STRING_TABLE_get
+#define ASN1_STRING_to_UTF8 GRPC_SHADOW_ASN1_STRING_to_UTF8
+#define ASN1_STRING_type GRPC_SHADOW_ASN1_STRING_type
+#define ASN1_STRING_type_new GRPC_SHADOW_ASN1_STRING_type_new
+#define ASN1_T61STRING_free GRPC_SHADOW_ASN1_T61STRING_free
+#define ASN1_T61STRING_it GRPC_SHADOW_ASN1_T61STRING_it
+#define ASN1_T61STRING_new GRPC_SHADOW_ASN1_T61STRING_new
+#define ASN1_tag2bit GRPC_SHADOW_ASN1_tag2bit
+#define ASN1_tag2str GRPC_SHADOW_ASN1_tag2str
+#define ASN1_TBOOLEAN_it GRPC_SHADOW_ASN1_TBOOLEAN_it
+#define ASN1_template_free GRPC_SHADOW_ASN1_template_free
+#define ASN1_template_new GRPC_SHADOW_ASN1_template_new
+#define ASN1_TIME_adj GRPC_SHADOW_ASN1_TIME_adj
+#define ASN1_TIME_check GRPC_SHADOW_ASN1_TIME_check
+#define ASN1_TIME_diff GRPC_SHADOW_ASN1_TIME_diff
+#define ASN1_TIME_free GRPC_SHADOW_ASN1_TIME_free
+#define ASN1_TIME_it GRPC_SHADOW_ASN1_TIME_it
+#define ASN1_TIME_new GRPC_SHADOW_ASN1_TIME_new
+#define ASN1_TIME_print GRPC_SHADOW_ASN1_TIME_print
+#define ASN1_TIME_set GRPC_SHADOW_ASN1_TIME_set
+#define ASN1_TIME_set_string GRPC_SHADOW_ASN1_TIME_set_string
+#define ASN1_TIME_to_generalizedtime GRPC_SHADOW_ASN1_TIME_to_generalizedtime
+#define ASN1_TYPE_cmp GRPC_SHADOW_ASN1_TYPE_cmp
+#define ASN1_TYPE_free GRPC_SHADOW_ASN1_TYPE_free
+#define ASN1_TYPE_get GRPC_SHADOW_ASN1_TYPE_get
+#define ASN1_TYPE_new GRPC_SHADOW_ASN1_TYPE_new
+#define ASN1_TYPE_set GRPC_SHADOW_ASN1_TYPE_set
+#define ASN1_TYPE_set1 GRPC_SHADOW_ASN1_TYPE_set1
+#define ASN1_UNIVERSALSTRING_free GRPC_SHADOW_ASN1_UNIVERSALSTRING_free
+#define ASN1_UNIVERSALSTRING_it GRPC_SHADOW_ASN1_UNIVERSALSTRING_it
+#define ASN1_UNIVERSALSTRING_new GRPC_SHADOW_ASN1_UNIVERSALSTRING_new
+#define ASN1_UTCTIME_adj GRPC_SHADOW_ASN1_UTCTIME_adj
+#define ASN1_UTCTIME_check GRPC_SHADOW_ASN1_UTCTIME_check
+#define ASN1_UTCTIME_cmp_time_t GRPC_SHADOW_ASN1_UTCTIME_cmp_time_t
+#define ASN1_UTCTIME_free GRPC_SHADOW_ASN1_UTCTIME_free
+#define ASN1_UTCTIME_it GRPC_SHADOW_ASN1_UTCTIME_it
+#define ASN1_UTCTIME_new GRPC_SHADOW_ASN1_UTCTIME_new
+#define ASN1_UTCTIME_print GRPC_SHADOW_ASN1_UTCTIME_print
+#define ASN1_UTCTIME_set GRPC_SHADOW_ASN1_UTCTIME_set
+#define ASN1_UTCTIME_set_string GRPC_SHADOW_ASN1_UTCTIME_set_string
+#define asn1_utctime_to_tm GRPC_SHADOW_asn1_utctime_to_tm
+#define ASN1_UTF8STRING_free GRPC_SHADOW_ASN1_UTF8STRING_free
+#define ASN1_UTF8STRING_it GRPC_SHADOW_ASN1_UTF8STRING_it
+#define ASN1_UTF8STRING_new GRPC_SHADOW_ASN1_UTF8STRING_new
+#define ASN1_VISIBLESTRING_free GRPC_SHADOW_ASN1_VISIBLESTRING_free
+#define ASN1_VISIBLESTRING_it GRPC_SHADOW_ASN1_VISIBLESTRING_it
+#define ASN1_VISIBLESTRING_new GRPC_SHADOW_ASN1_VISIBLESTRING_new
+#define AUTHORITY_INFO_ACCESS_free GRPC_SHADOW_AUTHORITY_INFO_ACCESS_free
+#define AUTHORITY_INFO_ACCESS_it GRPC_SHADOW_AUTHORITY_INFO_ACCESS_it
+#define AUTHORITY_INFO_ACCESS_new GRPC_SHADOW_AUTHORITY_INFO_ACCESS_new
+#define AUTHORITY_KEYID_free GRPC_SHADOW_AUTHORITY_KEYID_free
+#define AUTHORITY_KEYID_it GRPC_SHADOW_AUTHORITY_KEYID_it
+#define AUTHORITY_KEYID_new GRPC_SHADOW_AUTHORITY_KEYID_new
+#define BASIC_CONSTRAINTS_free GRPC_SHADOW_BASIC_CONSTRAINTS_free
+#define BASIC_CONSTRAINTS_it GRPC_SHADOW_BASIC_CONSTRAINTS_it
+#define BASIC_CONSTRAINTS_new GRPC_SHADOW_BASIC_CONSTRAINTS_new
+#define beeu_mod_inverse_vartime GRPC_SHADOW_beeu_mod_inverse_vartime
+#define BIO_append_filename GRPC_SHADOW_BIO_append_filename
+#define BIO_callback_ctrl GRPC_SHADOW_BIO_callback_ctrl
+#define BIO_clear_flags GRPC_SHADOW_BIO_clear_flags
+#define BIO_clear_retry_flags GRPC_SHADOW_BIO_clear_retry_flags
+#define bio_clear_socket_error GRPC_SHADOW_bio_clear_socket_error
+#define BIO_copy_next_retry GRPC_SHADOW_BIO_copy_next_retry
+#define BIO_ctrl GRPC_SHADOW_BIO_ctrl
+#define BIO_ctrl_get_read_request GRPC_SHADOW_BIO_ctrl_get_read_request
+#define BIO_ctrl_get_write_guarantee GRPC_SHADOW_BIO_ctrl_get_write_guarantee
+#define BIO_ctrl_pending GRPC_SHADOW_BIO_ctrl_pending
+#define BIO_do_connect GRPC_SHADOW_BIO_do_connect
+#define BIO_eof GRPC_SHADOW_BIO_eof
+#define bio_fd_should_retry GRPC_SHADOW_bio_fd_should_retry
+#define BIO_find_type GRPC_SHADOW_BIO_find_type
+#define BIO_flush GRPC_SHADOW_BIO_flush
+#define BIO_free GRPC_SHADOW_BIO_free
+#define BIO_free_all GRPC_SHADOW_BIO_free_all
+#define BIO_f_ssl GRPC_SHADOW_BIO_f_ssl
+#define BIO_get_data GRPC_SHADOW_BIO_get_data
+#define BIO_get_fd GRPC_SHADOW_BIO_get_fd
+#define BIO_get_fp GRPC_SHADOW_BIO_get_fp
+#define BIO_get_init GRPC_SHADOW_BIO_get_init
+#define BIO_get_mem_data GRPC_SHADOW_BIO_get_mem_data
+#define BIO_get_mem_ptr GRPC_SHADOW_BIO_get_mem_ptr
+#define BIO_get_new_index GRPC_SHADOW_BIO_get_new_index
+#define BIO_get_retry_flags GRPC_SHADOW_BIO_get_retry_flags
+#define BIO_get_retry_reason GRPC_SHADOW_BIO_get_retry_reason
+#define BIO_gets GRPC_SHADOW_BIO_gets
+#define BIO_get_shutdown GRPC_SHADOW_BIO_get_shutdown
+#define BIO_hexdump GRPC_SHADOW_BIO_hexdump
+#define BIO_indent GRPC_SHADOW_BIO_indent
+#define BIO_int_ctrl GRPC_SHADOW_BIO_int_ctrl
+#define bio_ip_and_port_to_socket_and_addr GRPC_SHADOW_bio_ip_and_port_to_socket_and_addr
+#define BIO_mem_contents GRPC_SHADOW_BIO_mem_contents
+#define BIO_meth_free GRPC_SHADOW_BIO_meth_free
+#define BIO_meth_new GRPC_SHADOW_BIO_meth_new
+#define BIO_method_type GRPC_SHADOW_BIO_method_type
+#define BIO_meth_set_create GRPC_SHADOW_BIO_meth_set_create
+#define BIO_meth_set_ctrl GRPC_SHADOW_BIO_meth_set_ctrl
+#define BIO_meth_set_destroy GRPC_SHADOW_BIO_meth_set_destroy
+#define BIO_meth_set_gets GRPC_SHADOW_BIO_meth_set_gets
+#define BIO_meth_set_puts GRPC_SHADOW_BIO_meth_set_puts
+#define BIO_meth_set_read GRPC_SHADOW_BIO_meth_set_read
+#define BIO_meth_set_write GRPC_SHADOW_BIO_meth_set_write
+#define BIO_new GRPC_SHADOW_BIO_new
+#define BIO_new_bio_pair GRPC_SHADOW_BIO_new_bio_pair
+#define BIO_new_connect GRPC_SHADOW_BIO_new_connect
+#define BIO_new_fd GRPC_SHADOW_BIO_new_fd
+#define BIO_new_file GRPC_SHADOW_BIO_new_file
+#define BIO_new_fp GRPC_SHADOW_BIO_new_fp
+#define BIO_new_mem_buf GRPC_SHADOW_BIO_new_mem_buf
+#define BIO_new_socket GRPC_SHADOW_BIO_new_socket
+#define BIO_next GRPC_SHADOW_BIO_next
+#define BIO_number_read GRPC_SHADOW_BIO_number_read
+#define BIO_number_written GRPC_SHADOW_BIO_number_written
+#define BIO_pending GRPC_SHADOW_BIO_pending
+#define BIO_pop GRPC_SHADOW_BIO_pop
+#define BIO_printf GRPC_SHADOW_BIO_printf
+#define BIO_ptr_ctrl GRPC_SHADOW_BIO_ptr_ctrl
+#define BIO_push GRPC_SHADOW_BIO_push
+#define BIO_puts GRPC_SHADOW_BIO_puts
+#define BIO_read GRPC_SHADOW_BIO_read
+#define BIO_read_asn1 GRPC_SHADOW_BIO_read_asn1
+#define BIO_read_filename GRPC_SHADOW_BIO_read_filename
+#define BIO_reset GRPC_SHADOW_BIO_reset
+#define BIO_rw_filename GRPC_SHADOW_BIO_rw_filename
+#define BIO_s_connect GRPC_SHADOW_BIO_s_connect
+#define BIO_set_close GRPC_SHADOW_BIO_set_close
+#define BIO_set_conn_hostname GRPC_SHADOW_BIO_set_conn_hostname
+#define BIO_set_conn_int_port GRPC_SHADOW_BIO_set_conn_int_port
+#define BIO_set_conn_port GRPC_SHADOW_BIO_set_conn_port
+#define BIO_set_data GRPC_SHADOW_BIO_set_data
+#define BIO_set_fd GRPC_SHADOW_BIO_set_fd
+#define BIO_set_flags GRPC_SHADOW_BIO_set_flags
+#define BIO_set_fp GRPC_SHADOW_BIO_set_fp
+#define BIO_set_init GRPC_SHADOW_BIO_set_init
+#define BIO_set_mem_buf GRPC_SHADOW_BIO_set_mem_buf
+#define BIO_set_mem_eof_return GRPC_SHADOW_BIO_set_mem_eof_return
+#define BIO_set_nbio GRPC_SHADOW_BIO_set_nbio
+#define BIO_set_retry_read GRPC_SHADOW_BIO_set_retry_read
+#define BIO_set_retry_special GRPC_SHADOW_BIO_set_retry_special
+#define BIO_set_retry_write GRPC_SHADOW_BIO_set_retry_write
+#define BIO_set_shutdown GRPC_SHADOW_BIO_set_shutdown
+#define BIO_set_ssl GRPC_SHADOW_BIO_set_ssl
+#define BIO_set_write_buffer_size GRPC_SHADOW_BIO_set_write_buffer_size
+#define BIO_s_fd GRPC_SHADOW_BIO_s_fd
+#define BIO_s_file GRPC_SHADOW_BIO_s_file
+#define BIO_should_io_special GRPC_SHADOW_BIO_should_io_special
+#define BIO_should_read GRPC_SHADOW_BIO_should_read
+#define BIO_should_retry GRPC_SHADOW_BIO_should_retry
+#define BIO_should_write GRPC_SHADOW_BIO_should_write
+#define BIO_shutdown_wr GRPC_SHADOW_BIO_shutdown_wr
+#define BIO_s_mem GRPC_SHADOW_BIO_s_mem
+#define BIO_snprintf GRPC_SHADOW_BIO_snprintf
+#define bio_sock_error GRPC_SHADOW_bio_sock_error
+#define bio_socket_nbio GRPC_SHADOW_bio_socket_nbio
+#define BIO_s_socket GRPC_SHADOW_BIO_s_socket
+#define BIO_test_flags GRPC_SHADOW_BIO_test_flags
+#define BIO_up_ref GRPC_SHADOW_BIO_up_ref
+#define BIO_vfree GRPC_SHADOW_BIO_vfree
+#define BIO_vsnprintf GRPC_SHADOW_BIO_vsnprintf
+#define BIO_wpending GRPC_SHADOW_BIO_wpending
+#define BIO_write GRPC_SHADOW_BIO_write
+#define BIO_write_all GRPC_SHADOW_BIO_write_all
+#define BIO_write_filename GRPC_SHADOW_BIO_write_filename
+#define BN_abs_is_word GRPC_SHADOW_BN_abs_is_word
+#define bn_abs_sub_consttime GRPC_SHADOW_bn_abs_sub_consttime
+#define BN_add GRPC_SHADOW_BN_add
+#define BN_add_word GRPC_SHADOW_BN_add_word
+#define bn_add_words GRPC_SHADOW_bn_add_words
+#define BN_asc2bn GRPC_SHADOW_BN_asc2bn
+#define BN_bin2bn GRPC_SHADOW_BN_bin2bn
+#define BN_BLINDING_convert GRPC_SHADOW_BN_BLINDING_convert
+#define BN_BLINDING_free GRPC_SHADOW_BN_BLINDING_free
+#define BN_BLINDING_invert GRPC_SHADOW_BN_BLINDING_invert
+#define BN_BLINDING_new GRPC_SHADOW_BN_BLINDING_new
+#define BN_bn2bin GRPC_SHADOW_BN_bn2bin
+#define BN_bn2binpad GRPC_SHADOW_BN_bn2binpad
+#define BN_bn2bin_padded GRPC_SHADOW_BN_bn2bin_padded
+#define BN_bn2cbb_padded GRPC_SHADOW_BN_bn2cbb_padded
+#define BN_bn2dec GRPC_SHADOW_BN_bn2dec
+#define BN_bn2hex GRPC_SHADOW_BN_bn2hex
+#define BN_bn2le_padded GRPC_SHADOW_BN_bn2le_padded
+#define BN_bn2mpi GRPC_SHADOW_BN_bn2mpi
+#define BN_clear GRPC_SHADOW_BN_clear
+#define BN_clear_bit GRPC_SHADOW_BN_clear_bit
+#define BN_clear_free GRPC_SHADOW_BN_clear_free
+#define BN_cmp GRPC_SHADOW_BN_cmp
+#define BN_cmp_word GRPC_SHADOW_BN_cmp_word
+#define BN_copy GRPC_SHADOW_BN_copy
+#define bn_copy_words GRPC_SHADOW_bn_copy_words
+#define BN_count_low_zero_bits GRPC_SHADOW_BN_count_low_zero_bits
+#define BN_CTX_end GRPC_SHADOW_BN_CTX_end
+#define BN_CTX_free GRPC_SHADOW_BN_CTX_free
+#define BN_CTX_get GRPC_SHADOW_BN_CTX_get
+#define BN_CTX_new GRPC_SHADOW_BN_CTX_new
+#define BN_CTX_start GRPC_SHADOW_BN_CTX_start
+#define BN_dec2bn GRPC_SHADOW_BN_dec2bn
+#define BN_div GRPC_SHADOW_BN_div
+#define bn_div_consttime GRPC_SHADOW_bn_div_consttime
+#define BN_div_word GRPC_SHADOW_BN_div_word
+#define BN_dup GRPC_SHADOW_BN_dup
+#define BN_enhanced_miller_rabin_primality_test GRPC_SHADOW_BN_enhanced_miller_rabin_primality_test
+#define BN_equal_consttime GRPC_SHADOW_BN_equal_consttime
+#define BN_exp GRPC_SHADOW_BN_exp
+#define bn_expand GRPC_SHADOW_bn_expand
+#define bn_fits_in_words GRPC_SHADOW_bn_fits_in_words
+#define BN_free GRPC_SHADOW_BN_free
+#define bn_from_montgomery GRPC_SHADOW_bn_from_montgomery
+#define BN_from_montgomery GRPC_SHADOW_BN_from_montgomery
+#define bn_from_montgomery_small GRPC_SHADOW_bn_from_montgomery_small
+#define bn_gather5 GRPC_SHADOW_bn_gather5
+#define BN_gcd GRPC_SHADOW_BN_gcd
+#define BN_GENCB_call GRPC_SHADOW_BN_GENCB_call
+#define BN_GENCB_set GRPC_SHADOW_BN_GENCB_set
+#define BN_generate_prime_ex GRPC_SHADOW_BN_generate_prime_ex
+#define BN_get_rfc3526_prime_1536 GRPC_SHADOW_BN_get_rfc3526_prime_1536
+#define BN_get_u64 GRPC_SHADOW_BN_get_u64
+#define BN_get_word GRPC_SHADOW_BN_get_word
+#define BN_hex2bn GRPC_SHADOW_BN_hex2bn
+#define BN_init GRPC_SHADOW_BN_init
+#define bn_in_range_words GRPC_SHADOW_bn_in_range_words
+#define BN_is_bit_set GRPC_SHADOW_BN_is_bit_set
+#define bn_is_bit_set_words GRPC_SHADOW_bn_is_bit_set_words
+#define BN_is_negative GRPC_SHADOW_BN_is_negative
+#define BN_is_odd GRPC_SHADOW_BN_is_odd
+#define BN_is_one GRPC_SHADOW_BN_is_one
+#define BN_is_pow2 GRPC_SHADOW_BN_is_pow2
+#define BN_is_prime_ex GRPC_SHADOW_BN_is_prime_ex
+#define BN_is_prime_fasttest_ex GRPC_SHADOW_BN_is_prime_fasttest_ex
+#define bn_is_relatively_prime GRPC_SHADOW_bn_is_relatively_prime
+#define BN_is_word GRPC_SHADOW_BN_is_word
+#define BN_is_zero GRPC_SHADOW_BN_is_zero
+#define bn_jacobi GRPC_SHADOW_bn_jacobi
+#define bn_lcm_consttime GRPC_SHADOW_bn_lcm_consttime
+#define BN_le2bn GRPC_SHADOW_BN_le2bn
+#define bn_less_than_montgomery_R GRPC_SHADOW_bn_less_than_montgomery_R
+#define bn_less_than_words GRPC_SHADOW_bn_less_than_words
+#define BN_lshift GRPC_SHADOW_BN_lshift
+#define BN_lshift1 GRPC_SHADOW_BN_lshift1
+#define BN_marshal_asn1 GRPC_SHADOW_BN_marshal_asn1
+#define BN_mask_bits GRPC_SHADOW_BN_mask_bits
+#define bn_miller_rabin_init GRPC_SHADOW_bn_miller_rabin_init
+#define bn_miller_rabin_iteration GRPC_SHADOW_bn_miller_rabin_iteration
+#define bn_minimal_width GRPC_SHADOW_bn_minimal_width
+#define BN_mod_add GRPC_SHADOW_BN_mod_add
+#define bn_mod_add_consttime GRPC_SHADOW_bn_mod_add_consttime
+#define BN_mod_add_quick GRPC_SHADOW_BN_mod_add_quick
+#define bn_mod_add_words GRPC_SHADOW_bn_mod_add_words
+#define BN_mod_exp GRPC_SHADOW_BN_mod_exp
+#define BN_mod_exp2_mont GRPC_SHADOW_BN_mod_exp2_mont
+#define bn_mod_exp_base_2_consttime GRPC_SHADOW_bn_mod_exp_base_2_consttime
+#define BN_mod_exp_mont GRPC_SHADOW_BN_mod_exp_mont
+#define BN_mod_exp_mont_consttime GRPC_SHADOW_BN_mod_exp_mont_consttime
+#define bn_mod_exp_mont_small GRPC_SHADOW_bn_mod_exp_mont_small
+#define BN_mod_exp_mont_word GRPC_SHADOW_BN_mod_exp_mont_word
+#define BN_mod_inverse GRPC_SHADOW_BN_mod_inverse
+#define BN_mod_inverse_blinded GRPC_SHADOW_BN_mod_inverse_blinded
+#define bn_mod_inverse_consttime GRPC_SHADOW_bn_mod_inverse_consttime
+#define BN_mod_inverse_odd GRPC_SHADOW_BN_mod_inverse_odd
+#define bn_mod_inverse_prime GRPC_SHADOW_bn_mod_inverse_prime
+#define bn_mod_inverse_prime_mont_small GRPC_SHADOW_bn_mod_inverse_prime_mont_small
+#define bn_mod_inverse_secret_prime GRPC_SHADOW_bn_mod_inverse_secret_prime
+#define BN_mod_lshift GRPC_SHADOW_BN_mod_lshift
+#define BN_mod_lshift1 GRPC_SHADOW_BN_mod_lshift1
+#define bn_mod_lshift1_consttime GRPC_SHADOW_bn_mod_lshift1_consttime
+#define BN_mod_lshift1_quick GRPC_SHADOW_BN_mod_lshift1_quick
+#define bn_mod_lshift_consttime GRPC_SHADOW_bn_mod_lshift_consttime
+#define BN_mod_lshift_quick GRPC_SHADOW_BN_mod_lshift_quick
+#define BN_mod_mul GRPC_SHADOW_BN_mod_mul
+#define BN_mod_mul_montgomery GRPC_SHADOW_BN_mod_mul_montgomery
+#define bn_mod_mul_montgomery_small GRPC_SHADOW_bn_mod_mul_montgomery_small
+#define BN_mod_pow2 GRPC_SHADOW_BN_mod_pow2
+#define BN_mod_sqr GRPC_SHADOW_BN_mod_sqr
+#define BN_mod_sqrt GRPC_SHADOW_BN_mod_sqrt
+#define BN_mod_sub GRPC_SHADOW_BN_mod_sub
+#define bn_mod_sub_consttime GRPC_SHADOW_bn_mod_sub_consttime
+#define BN_mod_sub_quick GRPC_SHADOW_BN_mod_sub_quick
+#define bn_mod_sub_words GRPC_SHADOW_bn_mod_sub_words
+#define bn_mod_u16_consttime GRPC_SHADOW_bn_mod_u16_consttime
+#define BN_mod_word GRPC_SHADOW_BN_mod_word
+#define BN_MONT_CTX_copy GRPC_SHADOW_BN_MONT_CTX_copy
+#define BN_MONT_CTX_free GRPC_SHADOW_BN_MONT_CTX_free
+#define BN_MONT_CTX_new GRPC_SHADOW_BN_MONT_CTX_new
+#define BN_MONT_CTX_new_consttime GRPC_SHADOW_BN_MONT_CTX_new_consttime
+#define BN_MONT_CTX_new_for_modulus GRPC_SHADOW_BN_MONT_CTX_new_for_modulus
+#define BN_MONT_CTX_set GRPC_SHADOW_BN_MONT_CTX_set
+#define BN_MONT_CTX_set_locked GRPC_SHADOW_BN_MONT_CTX_set_locked
+#define bn_mont_n0 GRPC_SHADOW_bn_mont_n0
+#define BN_mpi2bn GRPC_SHADOW_BN_mpi2bn
+#define BN_mul GRPC_SHADOW_BN_mul
+#define bn_mul_add_words GRPC_SHADOW_bn_mul_add_words
+#define bn_mul_comba4 GRPC_SHADOW_bn_mul_comba4
+#define bn_mul_comba8 GRPC_SHADOW_bn_mul_comba8
+#define bn_mul_consttime GRPC_SHADOW_bn_mul_consttime
+#define bn_mul_mont GRPC_SHADOW_bn_mul_mont
+#define bn_mul_mont_gather5 GRPC_SHADOW_bn_mul_mont_gather5
+#define bn_mul_small GRPC_SHADOW_bn_mul_small
+#define BN_mul_word GRPC_SHADOW_BN_mul_word
+#define bn_mul_words GRPC_SHADOW_bn_mul_words
+#define BN_new GRPC_SHADOW_BN_new
+#define BN_nnmod GRPC_SHADOW_BN_nnmod
+#define BN_nnmod_pow2 GRPC_SHADOW_BN_nnmod_pow2
+#define BN_num_bits GRPC_SHADOW_BN_num_bits
+#define BN_num_bits_word GRPC_SHADOW_BN_num_bits_word
+#define BN_num_bytes GRPC_SHADOW_BN_num_bytes
+#define bn_odd_number_is_obviously_composite GRPC_SHADOW_bn_odd_number_is_obviously_composite
+#define BN_one GRPC_SHADOW_BN_one
+#define bn_one_to_montgomery GRPC_SHADOW_bn_one_to_montgomery
+#define BN_parse_asn1_unsigned GRPC_SHADOW_BN_parse_asn1_unsigned
+#define bn_power5 GRPC_SHADOW_bn_power5
+#define BN_primality_test GRPC_SHADOW_BN_primality_test
+#define BN_print GRPC_SHADOW_BN_print
+#define BN_print_fp GRPC_SHADOW_BN_print_fp
+#define BN_pseudo_rand GRPC_SHADOW_BN_pseudo_rand
+#define BN_pseudo_rand_range GRPC_SHADOW_BN_pseudo_rand_range
+#define BN_rand GRPC_SHADOW_BN_rand
+#define BN_rand_range GRPC_SHADOW_BN_rand_range
+#define BN_rand_range_ex GRPC_SHADOW_BN_rand_range_ex
+#define bn_rand_range_words GRPC_SHADOW_bn_rand_range_words
+#define bn_rand_secret_range GRPC_SHADOW_bn_rand_secret_range
+#define bn_reduce_once GRPC_SHADOW_bn_reduce_once
+#define bn_reduce_once_in_place GRPC_SHADOW_bn_reduce_once_in_place
+#define bn_resize_words GRPC_SHADOW_bn_resize_words
+#define BN_rshift GRPC_SHADOW_BN_rshift
+#define BN_rshift1 GRPC_SHADOW_BN_rshift1
+#define bn_rshift1_words GRPC_SHADOW_bn_rshift1_words
+#define bn_rshift_secret_shift GRPC_SHADOW_bn_rshift_secret_shift
+#define bn_rshift_words GRPC_SHADOW_bn_rshift_words
+#define bn_scatter5 GRPC_SHADOW_bn_scatter5
+#define bn_select_words GRPC_SHADOW_bn_select_words
+#define BN_set_bit GRPC_SHADOW_BN_set_bit
+#define bn_set_minimal_width GRPC_SHADOW_bn_set_minimal_width
+#define BN_set_negative GRPC_SHADOW_BN_set_negative
+#define BN_set_u64 GRPC_SHADOW_BN_set_u64
+#define BN_set_word GRPC_SHADOW_BN_set_word
+#define bn_set_words GRPC_SHADOW_bn_set_words
+#define BN_sqr GRPC_SHADOW_BN_sqr
+#define bn_sqr8x_internal GRPC_SHADOW_bn_sqr8x_internal
+#define bn_sqr_comba4 GRPC_SHADOW_bn_sqr_comba4
+#define bn_sqr_comba8 GRPC_SHADOW_bn_sqr_comba8
+#define bn_sqr_consttime GRPC_SHADOW_bn_sqr_consttime
+#define bn_sqr_small GRPC_SHADOW_bn_sqr_small
+#define BN_sqrt GRPC_SHADOW_BN_sqrt
+#define bn_sqr_words GRPC_SHADOW_bn_sqr_words
+#define bn_sqrx8x_internal GRPC_SHADOW_bn_sqrx8x_internal
+#define BN_sub GRPC_SHADOW_BN_sub
+#define BN_sub_word GRPC_SHADOW_BN_sub_word
+#define bn_sub_words GRPC_SHADOW_bn_sub_words
+#define BN_to_ASN1_ENUMERATED GRPC_SHADOW_BN_to_ASN1_ENUMERATED
+#define BN_to_ASN1_INTEGER GRPC_SHADOW_BN_to_ASN1_INTEGER
+#define BN_to_montgomery GRPC_SHADOW_BN_to_montgomery
+#define bn_to_montgomery_small GRPC_SHADOW_bn_to_montgomery_small
+#define BN_uadd GRPC_SHADOW_BN_uadd
+#define bn_uadd_consttime GRPC_SHADOW_bn_uadd_consttime
+#define BN_ucmp GRPC_SHADOW_BN_ucmp
+#define BN_usub GRPC_SHADOW_BN_usub
+#define bn_usub_consttime GRPC_SHADOW_bn_usub_consttime
+#define BN_value_one GRPC_SHADOW_BN_value_one
+#define bn_wexpand GRPC_SHADOW_bn_wexpand
+#define BN_zero GRPC_SHADOW_BN_zero
+#define boringssl_fips_self_test GRPC_SHADOW_boringssl_fips_self_test
+#define BORINGSSL_self_test GRPC_SHADOW_BORINGSSL_self_test
+#define BUF_MEM_append GRPC_SHADOW_BUF_MEM_append
+#define BUF_memdup GRPC_SHADOW_BUF_memdup
+#define BUF_MEM_free GRPC_SHADOW_BUF_MEM_free
+#define BUF_MEM_grow GRPC_SHADOW_BUF_MEM_grow
+#define BUF_MEM_grow_clean GRPC_SHADOW_BUF_MEM_grow_clean
+#define BUF_MEM_new GRPC_SHADOW_BUF_MEM_new
+#define BUF_MEM_reserve GRPC_SHADOW_BUF_MEM_reserve
+#define BUF_strdup GRPC_SHADOW_BUF_strdup
+#define BUF_strlcat GRPC_SHADOW_BUF_strlcat
+#define BUF_strlcpy GRPC_SHADOW_BUF_strlcpy
+#define BUF_strndup GRPC_SHADOW_BUF_strndup
+#define BUF_strnlen GRPC_SHADOW_BUF_strnlen
+#define c2i_ASN1_BIT_STRING GRPC_SHADOW_c2i_ASN1_BIT_STRING
+#define c2i_ASN1_INTEGER GRPC_SHADOW_c2i_ASN1_INTEGER
+#define c2i_ASN1_OBJECT GRPC_SHADOW_c2i_ASN1_OBJECT
+#define CBB_add_asn1 GRPC_SHADOW_CBB_add_asn1
+#define CBB_add_asn1_bool GRPC_SHADOW_CBB_add_asn1_bool
+#define CBB_add_asn1_int64 GRPC_SHADOW_CBB_add_asn1_int64
+#define CBB_add_asn1_octet_string GRPC_SHADOW_CBB_add_asn1_octet_string
+#define CBB_add_asn1_oid_from_text GRPC_SHADOW_CBB_add_asn1_oid_from_text
+#define CBB_add_asn1_uint64 GRPC_SHADOW_CBB_add_asn1_uint64
+#define CBB_add_bytes GRPC_SHADOW_CBB_add_bytes
+#define cbb_add_latin1 GRPC_SHADOW_cbb_add_latin1
+#define CBB_add_space GRPC_SHADOW_CBB_add_space
+#define CBB_add_u16 GRPC_SHADOW_CBB_add_u16
+#define CBB_add_u16le GRPC_SHADOW_CBB_add_u16le
+#define CBB_add_u16_length_prefixed GRPC_SHADOW_CBB_add_u16_length_prefixed
+#define CBB_add_u24 GRPC_SHADOW_CBB_add_u24
+#define CBB_add_u24_length_prefixed GRPC_SHADOW_CBB_add_u24_length_prefixed
+#define CBB_add_u32 GRPC_SHADOW_CBB_add_u32
+#define CBB_add_u32le GRPC_SHADOW_CBB_add_u32le
+#define CBB_add_u64 GRPC_SHADOW_CBB_add_u64
+#define CBB_add_u64le GRPC_SHADOW_CBB_add_u64le
+#define CBB_add_u8 GRPC_SHADOW_CBB_add_u8
+#define CBB_add_u8_length_prefixed GRPC_SHADOW_CBB_add_u8_length_prefixed
+#define cbb_add_ucs2_be GRPC_SHADOW_cbb_add_ucs2_be
+#define cbb_add_utf32_be GRPC_SHADOW_cbb_add_utf32_be
+#define cbb_add_utf8 GRPC_SHADOW_cbb_add_utf8
+#define CBB_cleanup GRPC_SHADOW_CBB_cleanup
+#define CBB_data GRPC_SHADOW_CBB_data
+#define CBB_did_write GRPC_SHADOW_CBB_did_write
+#define CBB_discard_child GRPC_SHADOW_CBB_discard_child
+#define CBB_finish GRPC_SHADOW_CBB_finish
+#define CBB_finish_i2d GRPC_SHADOW_CBB_finish_i2d
+#define CBB_flush GRPC_SHADOW_CBB_flush
+#define CBB_flush_asn1_set_of GRPC_SHADOW_CBB_flush_asn1_set_of
+#define cbb_get_utf8_len GRPC_SHADOW_cbb_get_utf8_len
+#define CBB_init GRPC_SHADOW_CBB_init
+#define CBB_init_fixed GRPC_SHADOW_CBB_init_fixed
+#define CBB_len GRPC_SHADOW_CBB_len
+#define CBB_reserve GRPC_SHADOW_CBB_reserve
+#define CBB_zero GRPC_SHADOW_CBB_zero
+#define CBS_asn1_ber_to_der GRPC_SHADOW_CBS_asn1_ber_to_der
+#define CBS_asn1_bitstring_has_bit GRPC_SHADOW_CBS_asn1_bitstring_has_bit
+#define CBS_asn1_oid_to_text GRPC_SHADOW_CBS_asn1_oid_to_text
+#define CBS_contains_zero_byte GRPC_SHADOW_CBS_contains_zero_byte
+#define CBS_copy_bytes GRPC_SHADOW_CBS_copy_bytes
+#define CBS_data GRPC_SHADOW_CBS_data
+#define CBS_get_any_asn1 GRPC_SHADOW_CBS_get_any_asn1
+#define CBS_get_any_asn1_element GRPC_SHADOW_CBS_get_any_asn1_element
+#define CBS_get_any_ber_asn1_element GRPC_SHADOW_CBS_get_any_ber_asn1_element
+#define CBS_get_asn1 GRPC_SHADOW_CBS_get_asn1
+#define CBS_get_asn1_bool GRPC_SHADOW_CBS_get_asn1_bool
+#define CBS_get_asn1_element GRPC_SHADOW_CBS_get_asn1_element
+#define CBS_get_asn1_implicit_string GRPC_SHADOW_CBS_get_asn1_implicit_string
+#define CBS_get_asn1_int64 GRPC_SHADOW_CBS_get_asn1_int64
+#define CBS_get_asn1_uint64 GRPC_SHADOW_CBS_get_asn1_uint64
+#define CBS_get_bytes GRPC_SHADOW_CBS_get_bytes
+#define CBS_get_last_u8 GRPC_SHADOW_CBS_get_last_u8
+#define cbs_get_latin1 GRPC_SHADOW_cbs_get_latin1
+#define CBS_get_optional_asn1 GRPC_SHADOW_CBS_get_optional_asn1
+#define CBS_get_optional_asn1_bool GRPC_SHADOW_CBS_get_optional_asn1_bool
+#define CBS_get_optional_asn1_octet_string GRPC_SHADOW_CBS_get_optional_asn1_octet_string
+#define CBS_get_optional_asn1_uint64 GRPC_SHADOW_CBS_get_optional_asn1_uint64
+#define CBS_get_u16 GRPC_SHADOW_CBS_get_u16
+#define CBS_get_u16le GRPC_SHADOW_CBS_get_u16le
+#define CBS_get_u16_length_prefixed GRPC_SHADOW_CBS_get_u16_length_prefixed
+#define CBS_get_u24 GRPC_SHADOW_CBS_get_u24
+#define CBS_get_u24_length_prefixed GRPC_SHADOW_CBS_get_u24_length_prefixed
+#define CBS_get_u32 GRPC_SHADOW_CBS_get_u32
+#define CBS_get_u32le GRPC_SHADOW_CBS_get_u32le
+#define CBS_get_u64 GRPC_SHADOW_CBS_get_u64
+#define CBS_get_u64le GRPC_SHADOW_CBS_get_u64le
+#define CBS_get_u8 GRPC_SHADOW_CBS_get_u8
+#define CBS_get_u8_length_prefixed GRPC_SHADOW_CBS_get_u8_length_prefixed
+#define cbs_get_ucs2_be GRPC_SHADOW_cbs_get_ucs2_be
+#define cbs_get_utf32_be GRPC_SHADOW_cbs_get_utf32_be
+#define cbs_get_utf8 GRPC_SHADOW_cbs_get_utf8
+#define CBS_init GRPC_SHADOW_CBS_init
+#define CBS_is_valid_asn1_bitstring GRPC_SHADOW_CBS_is_valid_asn1_bitstring
+#define CBS_len GRPC_SHADOW_CBS_len
+#define CBS_mem_equal GRPC_SHADOW_CBS_mem_equal
+#define CBS_peek_asn1_tag GRPC_SHADOW_CBS_peek_asn1_tag
+#define CBS_skip GRPC_SHADOW_CBS_skip
+#define CBS_stow GRPC_SHADOW_CBS_stow
+#define CBS_strdup GRPC_SHADOW_CBS_strdup
+#define CERTIFICATEPOLICIES_free GRPC_SHADOW_CERTIFICATEPOLICIES_free
+#define CERTIFICATEPOLICIES_it GRPC_SHADOW_CERTIFICATEPOLICIES_it
+#define CERTIFICATEPOLICIES_new GRPC_SHADOW_CERTIFICATEPOLICIES_new
+#define ChaCha20_ctr32 GRPC_SHADOW_ChaCha20_ctr32
+#define chacha20_poly1305_open GRPC_SHADOW_chacha20_poly1305_open
+#define chacha20_poly1305_seal GRPC_SHADOW_chacha20_poly1305_seal
+#define CMAC_CTX_copy GRPC_SHADOW_CMAC_CTX_copy
+#define CMAC_CTX_free GRPC_SHADOW_CMAC_CTX_free
+#define CMAC_CTX_new GRPC_SHADOW_CMAC_CTX_new
+#define CMAC_Final GRPC_SHADOW_CMAC_Final
+#define CMAC_Init GRPC_SHADOW_CMAC_Init
+#define CMAC_Reset GRPC_SHADOW_CMAC_Reset
+#define CMAC_Update GRPC_SHADOW_CMAC_Update
+#define CONF_modules_free GRPC_SHADOW_CONF_modules_free
+#define CONF_modules_load_file GRPC_SHADOW_CONF_modules_load_file
+#define CONF_parse_list GRPC_SHADOW_CONF_parse_list
+#define CONF_VALUE_new GRPC_SHADOW_CONF_VALUE_new
+#define CRL_DIST_POINTS_free GRPC_SHADOW_CRL_DIST_POINTS_free
+#define CRL_DIST_POINTS_it GRPC_SHADOW_CRL_DIST_POINTS_it
+#define CRL_DIST_POINTS_new GRPC_SHADOW_CRL_DIST_POINTS_new
+#define CRYPTO_BUFFER_alloc GRPC_SHADOW_CRYPTO_BUFFER_alloc
+#define CRYPTO_BUFFER_data GRPC_SHADOW_CRYPTO_BUFFER_data
+#define CRYPTO_BUFFER_free GRPC_SHADOW_CRYPTO_BUFFER_free
+#define CRYPTO_BUFFER_init_CBS GRPC_SHADOW_CRYPTO_BUFFER_init_CBS
+#define CRYPTO_BUFFER_len GRPC_SHADOW_CRYPTO_BUFFER_len
+#define CRYPTO_BUFFER_new GRPC_SHADOW_CRYPTO_BUFFER_new
+#define CRYPTO_BUFFER_new_from_CBS GRPC_SHADOW_CRYPTO_BUFFER_new_from_CBS
+#define CRYPTO_BUFFER_POOL_free GRPC_SHADOW_CRYPTO_BUFFER_POOL_free
+#define CRYPTO_BUFFER_POOL_new GRPC_SHADOW_CRYPTO_BUFFER_POOL_new
+#define CRYPTO_BUFFER_up_ref GRPC_SHADOW_CRYPTO_BUFFER_up_ref
+#define CRYPTO_cbc128_decrypt GRPC_SHADOW_CRYPTO_cbc128_decrypt
+#define CRYPTO_cbc128_encrypt GRPC_SHADOW_CRYPTO_cbc128_encrypt
+#define CRYPTO_cfb128_1_encrypt GRPC_SHADOW_CRYPTO_cfb128_1_encrypt
+#define CRYPTO_cfb128_8_encrypt GRPC_SHADOW_CRYPTO_cfb128_8_encrypt
+#define CRYPTO_cfb128_encrypt GRPC_SHADOW_CRYPTO_cfb128_encrypt
+#define CRYPTO_chacha_20 GRPC_SHADOW_CRYPTO_chacha_20
+#define CRYPTO_cleanup_all_ex_data GRPC_SHADOW_CRYPTO_cleanup_all_ex_data
+#define CRYPTO_ctr128_encrypt GRPC_SHADOW_CRYPTO_ctr128_encrypt
+#define CRYPTO_ctr128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_ctr128_encrypt_ctr32
+#define CRYPTO_free_ex_data GRPC_SHADOW_CRYPTO_free_ex_data
+#define CRYPTO_gcm128_aad GRPC_SHADOW_CRYPTO_gcm128_aad
+#define CRYPTO_gcm128_decrypt GRPC_SHADOW_CRYPTO_gcm128_decrypt
+#define CRYPTO_gcm128_decrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_decrypt_ctr32
+#define CRYPTO_gcm128_encrypt GRPC_SHADOW_CRYPTO_gcm128_encrypt
+#define CRYPTO_gcm128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_encrypt_ctr32
+#define CRYPTO_gcm128_finish GRPC_SHADOW_CRYPTO_gcm128_finish
+#define CRYPTO_gcm128_init_key GRPC_SHADOW_CRYPTO_gcm128_init_key
+#define CRYPTO_gcm128_setiv GRPC_SHADOW_CRYPTO_gcm128_setiv
+#define CRYPTO_gcm128_tag GRPC_SHADOW_CRYPTO_gcm128_tag
+#define crypto_gcm_clmul_enabled GRPC_SHADOW_crypto_gcm_clmul_enabled
+#define CRYPTO_get_dynlock_create_callback GRPC_SHADOW_CRYPTO_get_dynlock_create_callback
+#define CRYPTO_get_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_get_dynlock_destroy_callback
+#define CRYPTO_get_dynlock_lock_callback GRPC_SHADOW_CRYPTO_get_dynlock_lock_callback
+#define CRYPTO_get_ex_data GRPC_SHADOW_CRYPTO_get_ex_data
+#define CRYPTO_get_ex_new_index GRPC_SHADOW_CRYPTO_get_ex_new_index
+#define CRYPTO_get_locking_callback GRPC_SHADOW_CRYPTO_get_locking_callback
+#define CRYPTO_get_lock_name GRPC_SHADOW_CRYPTO_get_lock_name
+#define CRYPTO_get_thread_local GRPC_SHADOW_CRYPTO_get_thread_local
+#define CRYPTO_ghash_init GRPC_SHADOW_CRYPTO_ghash_init
+#define CRYPTO_has_asm GRPC_SHADOW_CRYPTO_has_asm
+#define CRYPTO_hchacha20 GRPC_SHADOW_CRYPTO_hchacha20
+#define CRYPTO_is_confidential_build GRPC_SHADOW_CRYPTO_is_confidential_build
+#define CRYPTO_library_init GRPC_SHADOW_CRYPTO_library_init
+#define CRYPTO_malloc_init GRPC_SHADOW_CRYPTO_malloc_init
+#define CRYPTO_memcmp GRPC_SHADOW_CRYPTO_memcmp
+#define CRYPTO_MUTEX_cleanup GRPC_SHADOW_CRYPTO_MUTEX_cleanup
+#define CRYPTO_MUTEX_init GRPC_SHADOW_CRYPTO_MUTEX_init
+#define CRYPTO_MUTEX_lock_read GRPC_SHADOW_CRYPTO_MUTEX_lock_read
+#define CRYPTO_MUTEX_lock_write GRPC_SHADOW_CRYPTO_MUTEX_lock_write
+#define CRYPTO_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_MUTEX_unlock_read
+#define CRYPTO_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_MUTEX_unlock_write
+#define CRYPTO_new_ex_data GRPC_SHADOW_CRYPTO_new_ex_data
+#define CRYPTO_num_locks GRPC_SHADOW_CRYPTO_num_locks
+#define CRYPTO_ofb128_encrypt GRPC_SHADOW_CRYPTO_ofb128_encrypt
+#define CRYPTO_once GRPC_SHADOW_CRYPTO_once
+#define CRYPTO_poly1305_finish GRPC_SHADOW_CRYPTO_poly1305_finish
+#define CRYPTO_poly1305_init GRPC_SHADOW_CRYPTO_poly1305_init
+#define CRYPTO_poly1305_update GRPC_SHADOW_CRYPTO_poly1305_update
+#define CRYPTO_POLYVAL_finish GRPC_SHADOW_CRYPTO_POLYVAL_finish
+#define CRYPTO_POLYVAL_init GRPC_SHADOW_CRYPTO_POLYVAL_init
+#define CRYPTO_POLYVAL_update_blocks GRPC_SHADOW_CRYPTO_POLYVAL_update_blocks
+#define CRYPTO_rdrand GRPC_SHADOW_CRYPTO_rdrand
+#define CRYPTO_rdrand_multiple8_buf GRPC_SHADOW_CRYPTO_rdrand_multiple8_buf
+#define CRYPTO_refcount_dec_and_test_zero GRPC_SHADOW_CRYPTO_refcount_dec_and_test_zero
+#define CRYPTO_refcount_inc GRPC_SHADOW_CRYPTO_refcount_inc
+#define CRYPTO_set_add_lock_callback GRPC_SHADOW_CRYPTO_set_add_lock_callback
+#define CRYPTO_set_dynlock_create_callback GRPC_SHADOW_CRYPTO_set_dynlock_create_callback
+#define CRYPTO_set_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_set_dynlock_destroy_callback
+#define CRYPTO_set_dynlock_lock_callback GRPC_SHADOW_CRYPTO_set_dynlock_lock_callback
+#define CRYPTO_set_ex_data GRPC_SHADOW_CRYPTO_set_ex_data
+#define CRYPTO_set_id_callback GRPC_SHADOW_CRYPTO_set_id_callback
+#define CRYPTO_set_locking_callback GRPC_SHADOW_CRYPTO_set_locking_callback
+#define CRYPTO_set_thread_local GRPC_SHADOW_CRYPTO_set_thread_local
+#define CRYPTO_STATIC_MUTEX_lock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_read
+#define CRYPTO_STATIC_MUTEX_lock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_write
+#define CRYPTO_STATIC_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_read
+#define CRYPTO_STATIC_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_write
+#define CRYPTO_sysrand GRPC_SHADOW_CRYPTO_sysrand
+#define CRYPTO_THREADID_current GRPC_SHADOW_CRYPTO_THREADID_current
+#define CRYPTO_THREADID_set_callback GRPC_SHADOW_CRYPTO_THREADID_set_callback
+#define CRYPTO_THREADID_set_numeric GRPC_SHADOW_CRYPTO_THREADID_set_numeric
+#define CRYPTO_THREADID_set_pointer GRPC_SHADOW_CRYPTO_THREADID_set_pointer
+#define CRYPTO_tls1_prf GRPC_SHADOW_CRYPTO_tls1_prf
+#define CTR_DRBG_clear GRPC_SHADOW_CTR_DRBG_clear
+#define CTR_DRBG_generate GRPC_SHADOW_CTR_DRBG_generate
+#define CTR_DRBG_init GRPC_SHADOW_CTR_DRBG_init
+#define CTR_DRBG_reseed GRPC_SHADOW_CTR_DRBG_reseed
+#define d2i_ACCESS_DESCRIPTION GRPC_SHADOW_d2i_ACCESS_DESCRIPTION
+#define d2i_ASN1_BIT_STRING GRPC_SHADOW_d2i_ASN1_BIT_STRING
+#define d2i_ASN1_BMPSTRING GRPC_SHADOW_d2i_ASN1_BMPSTRING
+#define d2i_ASN1_BOOLEAN GRPC_SHADOW_d2i_ASN1_BOOLEAN
+#define d2i_ASN1_ENUMERATED GRPC_SHADOW_d2i_ASN1_ENUMERATED
+#define d2i_ASN1_GENERALIZEDTIME GRPC_SHADOW_d2i_ASN1_GENERALIZEDTIME
+#define d2i_ASN1_GENERALSTRING GRPC_SHADOW_d2i_ASN1_GENERALSTRING
+#define d2i_ASN1_IA5STRING GRPC_SHADOW_d2i_ASN1_IA5STRING
+#define d2i_ASN1_INTEGER GRPC_SHADOW_d2i_ASN1_INTEGER
+#define d2i_ASN1_NULL GRPC_SHADOW_d2i_ASN1_NULL
+#define d2i_ASN1_OBJECT GRPC_SHADOW_d2i_ASN1_OBJECT
+#define d2i_ASN1_OCTET_STRING GRPC_SHADOW_d2i_ASN1_OCTET_STRING
+#define d2i_ASN1_PRINTABLE GRPC_SHADOW_d2i_ASN1_PRINTABLE
+#define d2i_ASN1_PRINTABLESTRING GRPC_SHADOW_d2i_ASN1_PRINTABLESTRING
+#define d2i_ASN1_SEQUENCE_ANY GRPC_SHADOW_d2i_ASN1_SEQUENCE_ANY
+#define d2i_ASN1_SET_ANY GRPC_SHADOW_d2i_ASN1_SET_ANY
+#define d2i_ASN1_T61STRING GRPC_SHADOW_d2i_ASN1_T61STRING
+#define d2i_ASN1_TIME GRPC_SHADOW_d2i_ASN1_TIME
+#define d2i_ASN1_TYPE GRPC_SHADOW_d2i_ASN1_TYPE
+#define d2i_ASN1_UNIVERSALSTRING GRPC_SHADOW_d2i_ASN1_UNIVERSALSTRING
+#define d2i_ASN1_UTCTIME GRPC_SHADOW_d2i_ASN1_UTCTIME
+#define d2i_ASN1_UTF8STRING GRPC_SHADOW_d2i_ASN1_UTF8STRING
+#define d2i_ASN1_VISIBLESTRING GRPC_SHADOW_d2i_ASN1_VISIBLESTRING
+#define d2i_AUTHORITY_INFO_ACCESS GRPC_SHADOW_d2i_AUTHORITY_INFO_ACCESS
+#define d2i_AUTHORITY_KEYID GRPC_SHADOW_d2i_AUTHORITY_KEYID
+#define d2i_AutoPrivateKey GRPC_SHADOW_d2i_AutoPrivateKey
+#define d2i_BASIC_CONSTRAINTS GRPC_SHADOW_d2i_BASIC_CONSTRAINTS
+#define d2i_CERTIFICATEPOLICIES GRPC_SHADOW_d2i_CERTIFICATEPOLICIES
+#define d2i_CRL_DIST_POINTS GRPC_SHADOW_d2i_CRL_DIST_POINTS
+#define d2i_DHparams GRPC_SHADOW_d2i_DHparams
+#define d2i_DHparams_bio GRPC_SHADOW_d2i_DHparams_bio
+#define d2i_DIRECTORYSTRING GRPC_SHADOW_d2i_DIRECTORYSTRING
+#define d2i_DISPLAYTEXT GRPC_SHADOW_d2i_DISPLAYTEXT
+#define d2i_DIST_POINT GRPC_SHADOW_d2i_DIST_POINT
+#define d2i_DIST_POINT_NAME GRPC_SHADOW_d2i_DIST_POINT_NAME
+#define d2i_DSAparams GRPC_SHADOW_d2i_DSAparams
+#define d2i_DSAPrivateKey GRPC_SHADOW_d2i_DSAPrivateKey
+#define d2i_DSAPrivateKey_bio GRPC_SHADOW_d2i_DSAPrivateKey_bio
+#define d2i_DSAPrivateKey_fp GRPC_SHADOW_d2i_DSAPrivateKey_fp
+#define d2i_DSA_PUBKEY GRPC_SHADOW_d2i_DSA_PUBKEY
+#define d2i_DSA_PUBKEY_bio GRPC_SHADOW_d2i_DSA_PUBKEY_bio
+#define d2i_DSA_PUBKEY_fp GRPC_SHADOW_d2i_DSA_PUBKEY_fp
+#define d2i_DSAPublicKey GRPC_SHADOW_d2i_DSAPublicKey
+#define d2i_DSA_SIG GRPC_SHADOW_d2i_DSA_SIG
+#define d2i_ECDSA_SIG GRPC_SHADOW_d2i_ECDSA_SIG
+#define d2i_ECParameters GRPC_SHADOW_d2i_ECParameters
+#define d2i_ECPrivateKey GRPC_SHADOW_d2i_ECPrivateKey
+#define d2i_ECPrivateKey_bio GRPC_SHADOW_d2i_ECPrivateKey_bio
+#define d2i_ECPrivateKey_fp GRPC_SHADOW_d2i_ECPrivateKey_fp
+#define d2i_EC_PUBKEY GRPC_SHADOW_d2i_EC_PUBKEY
+#define d2i_EC_PUBKEY_bio GRPC_SHADOW_d2i_EC_PUBKEY_bio
+#define d2i_EC_PUBKEY_fp GRPC_SHADOW_d2i_EC_PUBKEY_fp
+#define d2i_EDIPARTYNAME GRPC_SHADOW_d2i_EDIPARTYNAME
+#define d2i_EXTENDED_KEY_USAGE GRPC_SHADOW_d2i_EXTENDED_KEY_USAGE
+#define d2i_GENERAL_NAME GRPC_SHADOW_d2i_GENERAL_NAME
+#define d2i_GENERAL_NAMES GRPC_SHADOW_d2i_GENERAL_NAMES
+#define d2i_ISSUING_DIST_POINT GRPC_SHADOW_d2i_ISSUING_DIST_POINT
+#define d2i_NETSCAPE_SPKAC GRPC_SHADOW_d2i_NETSCAPE_SPKAC
+#define d2i_NETSCAPE_SPKI GRPC_SHADOW_d2i_NETSCAPE_SPKI
+#define d2i_NOTICEREF GRPC_SHADOW_d2i_NOTICEREF
+#define d2i_OTHERNAME GRPC_SHADOW_d2i_OTHERNAME
+#define d2i_PKCS12 GRPC_SHADOW_d2i_PKCS12
+#define d2i_PKCS12_bio GRPC_SHADOW_d2i_PKCS12_bio
+#define d2i_PKCS12_fp GRPC_SHADOW_d2i_PKCS12_fp
+#define d2i_PKCS7 GRPC_SHADOW_d2i_PKCS7
+#define d2i_PKCS7_bio GRPC_SHADOW_d2i_PKCS7_bio
+#define d2i_PKCS8_bio GRPC_SHADOW_d2i_PKCS8_bio
+#define d2i_PKCS8_fp GRPC_SHADOW_d2i_PKCS8_fp
+#define d2i_PKCS8PrivateKey_bio GRPC_SHADOW_d2i_PKCS8PrivateKey_bio
+#define d2i_PKCS8PrivateKey_fp GRPC_SHADOW_d2i_PKCS8PrivateKey_fp
+#define d2i_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO
+#define d2i_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_bio
+#define d2i_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_fp
+#define d2i_PKEY_USAGE_PERIOD GRPC_SHADOW_d2i_PKEY_USAGE_PERIOD
+#define d2i_POLICYINFO GRPC_SHADOW_d2i_POLICYINFO
+#define d2i_POLICYQUALINFO GRPC_SHADOW_d2i_POLICYQUALINFO
+#define d2i_PrivateKey GRPC_SHADOW_d2i_PrivateKey
+#define d2i_PrivateKey_bio GRPC_SHADOW_d2i_PrivateKey_bio
+#define d2i_PrivateKey_fp GRPC_SHADOW_d2i_PrivateKey_fp
+#define d2i_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_d2i_PROXY_CERT_INFO_EXTENSION
+#define d2i_PROXY_POLICY GRPC_SHADOW_d2i_PROXY_POLICY
+#define d2i_PUBKEY GRPC_SHADOW_d2i_PUBKEY
+#define d2i_PUBKEY_bio GRPC_SHADOW_d2i_PUBKEY_bio
+#define d2i_PUBKEY_fp GRPC_SHADOW_d2i_PUBKEY_fp
+#define d2i_PublicKey GRPC_SHADOW_d2i_PublicKey
+#define d2i_RSAPrivateKey GRPC_SHADOW_d2i_RSAPrivateKey
+#define d2i_RSAPrivateKey_bio GRPC_SHADOW_d2i_RSAPrivateKey_bio
+#define d2i_RSAPrivateKey_fp GRPC_SHADOW_d2i_RSAPrivateKey_fp
+#define d2i_RSA_PSS_PARAMS GRPC_SHADOW_d2i_RSA_PSS_PARAMS
+#define d2i_RSA_PUBKEY GRPC_SHADOW_d2i_RSA_PUBKEY
+#define d2i_RSA_PUBKEY_bio GRPC_SHADOW_d2i_RSA_PUBKEY_bio
+#define d2i_RSA_PUBKEY_fp GRPC_SHADOW_d2i_RSA_PUBKEY_fp
+#define d2i_RSAPublicKey GRPC_SHADOW_d2i_RSAPublicKey
+#define d2i_RSAPublicKey_bio GRPC_SHADOW_d2i_RSAPublicKey_bio
+#define d2i_RSAPublicKey_fp GRPC_SHADOW_d2i_RSAPublicKey_fp
+#define d2i_SSL_SESSION GRPC_SHADOW_d2i_SSL_SESSION
+#define d2i_SSL_SESSION_bio GRPC_SHADOW_d2i_SSL_SESSION_bio
+#define d2i_SXNET GRPC_SHADOW_d2i_SXNET
+#define d2i_SXNETID GRPC_SHADOW_d2i_SXNETID
+#define d2i_USERNOTICE GRPC_SHADOW_d2i_USERNOTICE
+#define d2i_X509 GRPC_SHADOW_d2i_X509
+#define d2i_X509_ALGOR GRPC_SHADOW_d2i_X509_ALGOR
+#define d2i_X509_ALGORS GRPC_SHADOW_d2i_X509_ALGORS
+#define d2i_X509_ATTRIBUTE GRPC_SHADOW_d2i_X509_ATTRIBUTE
+#define d2i_X509_AUX GRPC_SHADOW_d2i_X509_AUX
+#define d2i_X509_bio GRPC_SHADOW_d2i_X509_bio
+#define d2i_X509_CERT_AUX GRPC_SHADOW_d2i_X509_CERT_AUX
+#define d2i_X509_CINF GRPC_SHADOW_d2i_X509_CINF
+#define d2i_X509_CRL GRPC_SHADOW_d2i_X509_CRL
+#define d2i_X509_CRL_bio GRPC_SHADOW_d2i_X509_CRL_bio
+#define d2i_X509_CRL_fp GRPC_SHADOW_d2i_X509_CRL_fp
+#define d2i_X509_CRL_INFO GRPC_SHADOW_d2i_X509_CRL_INFO
+#define d2i_X509_EXTENSION GRPC_SHADOW_d2i_X509_EXTENSION
+#define d2i_X509_EXTENSIONS GRPC_SHADOW_d2i_X509_EXTENSIONS
+#define d2i_X509_fp GRPC_SHADOW_d2i_X509_fp
+#define d2i_X509_NAME GRPC_SHADOW_d2i_X509_NAME
+#define d2i_X509_NAME_ENTRY GRPC_SHADOW_d2i_X509_NAME_ENTRY
+#define d2i_X509_PUBKEY GRPC_SHADOW_d2i_X509_PUBKEY
+#define d2i_X509_REQ GRPC_SHADOW_d2i_X509_REQ
+#define d2i_X509_REQ_bio GRPC_SHADOW_d2i_X509_REQ_bio
+#define d2i_X509_REQ_fp GRPC_SHADOW_d2i_X509_REQ_fp
+#define d2i_X509_REQ_INFO GRPC_SHADOW_d2i_X509_REQ_INFO
+#define d2i_X509_REVOKED GRPC_SHADOW_d2i_X509_REVOKED
+#define d2i_X509_SIG GRPC_SHADOW_d2i_X509_SIG
+#define d2i_X509_VAL GRPC_SHADOW_d2i_X509_VAL
+#define DES_decrypt3 GRPC_SHADOW_DES_decrypt3
+#define DES_ecb3_encrypt GRPC_SHADOW_DES_ecb3_encrypt
+#define DES_ecb_encrypt GRPC_SHADOW_DES_ecb_encrypt
+#define DES_ede2_cbc_encrypt GRPC_SHADOW_DES_ede2_cbc_encrypt
+#define DES_ede3_cbc_encrypt GRPC_SHADOW_DES_ede3_cbc_encrypt
+#define DES_encrypt3 GRPC_SHADOW_DES_encrypt3
+#define DES_ncbc_encrypt GRPC_SHADOW_DES_ncbc_encrypt
+#define DES_set_key GRPC_SHADOW_DES_set_key
+#define DES_set_key_unchecked GRPC_SHADOW_DES_set_key_unchecked
+#define DES_set_odd_parity GRPC_SHADOW_DES_set_odd_parity
+#define DH_check GRPC_SHADOW_DH_check
+#define DH_check_pub_key GRPC_SHADOW_DH_check_pub_key
+#define DH_compute_key GRPC_SHADOW_DH_compute_key
+#define DH_free GRPC_SHADOW_DH_free
+#define DH_generate_key GRPC_SHADOW_DH_generate_key
+#define DH_generate_parameters_ex GRPC_SHADOW_DH_generate_parameters_ex
+#define DH_get0_key GRPC_SHADOW_DH_get0_key
+#define DH_get0_pqg GRPC_SHADOW_DH_get0_pqg
+#define DH_get_ex_data GRPC_SHADOW_DH_get_ex_data
+#define DH_get_ex_new_index GRPC_SHADOW_DH_get_ex_new_index
+#define DH_marshal_parameters GRPC_SHADOW_DH_marshal_parameters
+#define DH_new GRPC_SHADOW_DH_new
+#define DH_num_bits GRPC_SHADOW_DH_num_bits
+#define DHparams_dup GRPC_SHADOW_DHparams_dup
+#define DH_parse_parameters GRPC_SHADOW_DH_parse_parameters
+#define DH_set0_key GRPC_SHADOW_DH_set0_key
+#define DH_set0_pqg GRPC_SHADOW_DH_set0_pqg
+#define DH_set_ex_data GRPC_SHADOW_DH_set_ex_data
+#define DH_size GRPC_SHADOW_DH_size
+#define DH_up_ref GRPC_SHADOW_DH_up_ref
+#define DIRECTORYSTRING_free GRPC_SHADOW_DIRECTORYSTRING_free
+#define DIRECTORYSTRING_it GRPC_SHADOW_DIRECTORYSTRING_it
+#define DIRECTORYSTRING_new GRPC_SHADOW_DIRECTORYSTRING_new
+#define DISPLAYTEXT_free GRPC_SHADOW_DISPLAYTEXT_free
+#define DISPLAYTEXT_it GRPC_SHADOW_DISPLAYTEXT_it
+#define DISPLAYTEXT_new GRPC_SHADOW_DISPLAYTEXT_new
+#define DIST_POINT_free GRPC_SHADOW_DIST_POINT_free
+#define DIST_POINT_it GRPC_SHADOW_DIST_POINT_it
+#define DIST_POINT_NAME_free GRPC_SHADOW_DIST_POINT_NAME_free
+#define DIST_POINT_NAME_it GRPC_SHADOW_DIST_POINT_NAME_it
+#define DIST_POINT_NAME_new GRPC_SHADOW_DIST_POINT_NAME_new
+#define DIST_POINT_new GRPC_SHADOW_DIST_POINT_new
+#define DIST_POINT_set_dpname GRPC_SHADOW_DIST_POINT_set_dpname
+#define dsa_asn1_meth GRPC_SHADOW_dsa_asn1_meth
+#define DSA_check_signature GRPC_SHADOW_DSA_check_signature
+#define DSA_do_check_signature GRPC_SHADOW_DSA_do_check_signature
+#define DSA_do_sign GRPC_SHADOW_DSA_do_sign
+#define DSA_do_verify GRPC_SHADOW_DSA_do_verify
+#define DSA_dup_DH GRPC_SHADOW_DSA_dup_DH
+#define DSA_free GRPC_SHADOW_DSA_free
+#define DSA_generate_key GRPC_SHADOW_DSA_generate_key
+#define DSA_generate_parameters_ex GRPC_SHADOW_DSA_generate_parameters_ex
+#define DSA_get0_key GRPC_SHADOW_DSA_get0_key
+#define DSA_get0_pqg GRPC_SHADOW_DSA_get0_pqg
+#define DSA_get_ex_data GRPC_SHADOW_DSA_get_ex_data
+#define DSA_get_ex_new_index GRPC_SHADOW_DSA_get_ex_new_index
+#define DSA_marshal_parameters GRPC_SHADOW_DSA_marshal_parameters
+#define DSA_marshal_private_key GRPC_SHADOW_DSA_marshal_private_key
+#define DSA_marshal_public_key GRPC_SHADOW_DSA_marshal_public_key
+#define DSA_new GRPC_SHADOW_DSA_new
+#define DSAparams_dup GRPC_SHADOW_DSAparams_dup
+#define DSA_parse_parameters GRPC_SHADOW_DSA_parse_parameters
+#define DSA_parse_private_key GRPC_SHADOW_DSA_parse_private_key
+#define DSA_parse_public_key GRPC_SHADOW_DSA_parse_public_key
+#define DSA_set0_key GRPC_SHADOW_DSA_set0_key
+#define DSA_set0_pqg GRPC_SHADOW_DSA_set0_pqg
+#define DSA_set_ex_data GRPC_SHADOW_DSA_set_ex_data
+#define DSA_SIG_free GRPC_SHADOW_DSA_SIG_free
+#define DSA_SIG_marshal GRPC_SHADOW_DSA_SIG_marshal
+#define DSA_sign GRPC_SHADOW_DSA_sign
+#define DSA_SIG_new GRPC_SHADOW_DSA_SIG_new
+#define DSA_SIG_parse GRPC_SHADOW_DSA_SIG_parse
+#define DSA_size GRPC_SHADOW_DSA_size
+#define DSA_up_ref GRPC_SHADOW_DSA_up_ref
+#define DSA_verify GRPC_SHADOW_DSA_verify
+#define DTLS_client_method GRPC_SHADOW_DTLS_client_method
+#define DTLS_method GRPC_SHADOW_DTLS_method
+#define DTLS_server_method GRPC_SHADOW_DTLS_server_method
+#define DTLSv1_2_client_method GRPC_SHADOW_DTLSv1_2_client_method
+#define DTLSv1_2_method GRPC_SHADOW_DTLSv1_2_method
+#define DTLSv1_2_server_method GRPC_SHADOW_DTLSv1_2_server_method
+#define DTLSv1_client_method GRPC_SHADOW_DTLSv1_client_method
+#define DTLSv1_get_timeout GRPC_SHADOW_DTLSv1_get_timeout
+#define DTLSv1_handle_timeout GRPC_SHADOW_DTLSv1_handle_timeout
+#define DTLSv1_method GRPC_SHADOW_DTLSv1_method
+#define DTLSv1_server_method GRPC_SHADOW_DTLSv1_server_method
+#define DTLSv1_set_initial_timeout_duration GRPC_SHADOW_DTLSv1_set_initial_timeout_duration
+#define DTLS_with_buffers_method GRPC_SHADOW_DTLS_with_buffers_method
+#define ec_asn1_meth GRPC_SHADOW_ec_asn1_meth
+#define ec_bignum_to_felem GRPC_SHADOW_ec_bignum_to_felem
+#define ec_bignum_to_scalar GRPC_SHADOW_ec_bignum_to_scalar
+#define ec_cmp_x_coordinate GRPC_SHADOW_ec_cmp_x_coordinate
+#define ec_compute_wNAF GRPC_SHADOW_ec_compute_wNAF
+#define EC_curve_nid2nist GRPC_SHADOW_EC_curve_nid2nist
+#define EC_curve_nist2nid GRPC_SHADOW_EC_curve_nist2nid
+#define ECDH_compute_key GRPC_SHADOW_ECDH_compute_key
+#define ECDH_compute_key_fips GRPC_SHADOW_ECDH_compute_key_fips
+#define ECDSA_do_sign GRPC_SHADOW_ECDSA_do_sign
+#define ECDSA_do_verify GRPC_SHADOW_ECDSA_do_verify
+#define ECDSA_SIG_free GRPC_SHADOW_ECDSA_SIG_free
+#define ECDSA_SIG_from_bytes GRPC_SHADOW_ECDSA_SIG_from_bytes
+#define ECDSA_SIG_get0 GRPC_SHADOW_ECDSA_SIG_get0
+#define ECDSA_SIG_marshal GRPC_SHADOW_ECDSA_SIG_marshal
+#define ECDSA_SIG_max_len GRPC_SHADOW_ECDSA_SIG_max_len
+#define ECDSA_sign GRPC_SHADOW_ECDSA_sign
+#define ECDSA_SIG_new GRPC_SHADOW_ECDSA_SIG_new
+#define ECDSA_SIG_parse GRPC_SHADOW_ECDSA_SIG_parse
+#define ECDSA_SIG_set0 GRPC_SHADOW_ECDSA_SIG_set0
+#define ECDSA_SIG_to_bytes GRPC_SHADOW_ECDSA_SIG_to_bytes
+#define ECDSA_size GRPC_SHADOW_ECDSA_size
+#define ECDSA_verify GRPC_SHADOW_ECDSA_verify
+#define ec_felem_add GRPC_SHADOW_ec_felem_add
+#define ec_felem_equal GRPC_SHADOW_ec_felem_equal
+#define ec_felem_neg GRPC_SHADOW_ec_felem_neg
+#define ec_felem_non_zero_mask GRPC_SHADOW_ec_felem_non_zero_mask
+#define ec_felem_select GRPC_SHADOW_ec_felem_select
+#define ec_felem_sub GRPC_SHADOW_ec_felem_sub
+#define ec_felem_to_bignum GRPC_SHADOW_ec_felem_to_bignum
+#define EC_get_builtin_curves GRPC_SHADOW_EC_get_builtin_curves
+#define ec_get_x_coordinate_as_scalar GRPC_SHADOW_ec_get_x_coordinate_as_scalar
+#define ec_GFp_mont_add GRPC_SHADOW_ec_GFp_mont_add
+#define ec_GFp_mont_bignum_to_felem GRPC_SHADOW_ec_GFp_mont_bignum_to_felem
+#define ec_GFp_mont_dbl GRPC_SHADOW_ec_GFp_mont_dbl
+#define ec_GFp_mont_felem_mul GRPC_SHADOW_ec_GFp_mont_felem_mul
+#define ec_GFp_mont_felem_sqr GRPC_SHADOW_ec_GFp_mont_felem_sqr
+#define ec_GFp_mont_felem_to_bignum GRPC_SHADOW_ec_GFp_mont_felem_to_bignum
+#define ec_GFp_mont_group_finish GRPC_SHADOW_ec_GFp_mont_group_finish
+#define ec_GFp_mont_group_init GRPC_SHADOW_ec_GFp_mont_group_init
+#define ec_GFp_mont_group_set_curve GRPC_SHADOW_ec_GFp_mont_group_set_curve
+#define EC_GFp_mont_method GRPC_SHADOW_EC_GFp_mont_method
+#define ec_GFp_mont_mul GRPC_SHADOW_ec_GFp_mont_mul
+#define ec_GFp_mont_mul_base GRPC_SHADOW_ec_GFp_mont_mul_base
+#define ec_GFp_mont_mul_public GRPC_SHADOW_ec_GFp_mont_mul_public
+#define EC_GFp_nistp224_method GRPC_SHADOW_EC_GFp_nistp224_method
+#define EC_GFp_nistp256_method GRPC_SHADOW_EC_GFp_nistp256_method
+#define ec_GFp_nistp_recode_scalar_bits GRPC_SHADOW_ec_GFp_nistp_recode_scalar_bits
+#define EC_GFp_nistz256_method GRPC_SHADOW_EC_GFp_nistz256_method
+#define ec_GFp_simple_cmp GRPC_SHADOW_ec_GFp_simple_cmp
+#define ec_GFp_simple_cmp_x_coordinate GRPC_SHADOW_ec_GFp_simple_cmp_x_coordinate
+#define ec_GFp_simple_group_finish GRPC_SHADOW_ec_GFp_simple_group_finish
+#define ec_GFp_simple_group_get_curve GRPC_SHADOW_ec_GFp_simple_group_get_curve
+#define ec_GFp_simple_group_init GRPC_SHADOW_ec_GFp_simple_group_init
+#define ec_GFp_simple_group_set_curve GRPC_SHADOW_ec_GFp_simple_group_set_curve
+#define ec_GFp_simple_invert GRPC_SHADOW_ec_GFp_simple_invert
+#define ec_GFp_simple_is_at_infinity GRPC_SHADOW_ec_GFp_simple_is_at_infinity
+#define ec_GFp_simple_is_on_curve GRPC_SHADOW_ec_GFp_simple_is_on_curve
+#define ec_GFp_simple_mont_inv_mod_ord_vartime GRPC_SHADOW_ec_GFp_simple_mont_inv_mod_ord_vartime
+#define ec_GFp_simple_point_copy GRPC_SHADOW_ec_GFp_simple_point_copy
+#define ec_GFp_simple_point_init GRPC_SHADOW_ec_GFp_simple_point_init
+#define ec_GFp_simple_point_set_affine_coordinates GRPC_SHADOW_ec_GFp_simple_point_set_affine_coordinates
+#define ec_GFp_simple_point_set_to_infinity GRPC_SHADOW_ec_GFp_simple_point_set_to_infinity
+#define EC_GROUP_cmp GRPC_SHADOW_EC_GROUP_cmp
+#define EC_GROUP_dup GRPC_SHADOW_EC_GROUP_dup
+#define EC_GROUP_free GRPC_SHADOW_EC_GROUP_free
+#define EC_GROUP_get0_generator GRPC_SHADOW_EC_GROUP_get0_generator
+#define EC_GROUP_get0_order GRPC_SHADOW_EC_GROUP_get0_order
+#define EC_GROUP_get_cofactor GRPC_SHADOW_EC_GROUP_get_cofactor
+#define EC_GROUP_get_curve_GFp GRPC_SHADOW_EC_GROUP_get_curve_GFp
+#define EC_GROUP_get_curve_name GRPC_SHADOW_EC_GROUP_get_curve_name
+#define EC_GROUP_get_degree GRPC_SHADOW_EC_GROUP_get_degree
+#define EC_GROUP_get_order GRPC_SHADOW_EC_GROUP_get_order
+#define EC_GROUP_method_of GRPC_SHADOW_EC_GROUP_method_of
+#define ec_group_new GRPC_SHADOW_ec_group_new
+#define EC_GROUP_new_by_curve_name GRPC_SHADOW_EC_GROUP_new_by_curve_name
+#define EC_GROUP_new_curve_GFp GRPC_SHADOW_EC_GROUP_new_curve_GFp
+#define EC_GROUP_order_bits GRPC_SHADOW_EC_GROUP_order_bits
+#define EC_GROUP_set_asn1_flag GRPC_SHADOW_EC_GROUP_set_asn1_flag
+#define EC_GROUP_set_generator GRPC_SHADOW_EC_GROUP_set_generator
+#define EC_GROUP_set_point_conversion_form GRPC_SHADOW_EC_GROUP_set_point_conversion_form
+#define EC_KEY_check_fips GRPC_SHADOW_EC_KEY_check_fips
+#define EC_KEY_check_key GRPC_SHADOW_EC_KEY_check_key
+#define EC_KEY_derive_from_secret GRPC_SHADOW_EC_KEY_derive_from_secret
+#define EC_KEY_dup GRPC_SHADOW_EC_KEY_dup
+#define EC_KEY_free GRPC_SHADOW_EC_KEY_free
+#define EC_KEY_generate_key GRPC_SHADOW_EC_KEY_generate_key
+#define EC_KEY_generate_key_fips GRPC_SHADOW_EC_KEY_generate_key_fips
+#define EC_KEY_get0_group GRPC_SHADOW_EC_KEY_get0_group
+#define EC_KEY_get0_private_key GRPC_SHADOW_EC_KEY_get0_private_key
+#define EC_KEY_get0_public_key GRPC_SHADOW_EC_KEY_get0_public_key
+#define EC_KEY_get_conv_form GRPC_SHADOW_EC_KEY_get_conv_form
+#define EC_KEY_get_enc_flags GRPC_SHADOW_EC_KEY_get_enc_flags
+#define EC_KEY_get_ex_data GRPC_SHADOW_EC_KEY_get_ex_data
+#define EC_KEY_get_ex_new_index GRPC_SHADOW_EC_KEY_get_ex_new_index
+#define EC_KEY_is_opaque GRPC_SHADOW_EC_KEY_is_opaque
+#define EC_KEY_key2buf GRPC_SHADOW_EC_KEY_key2buf
+#define EC_KEY_marshal_curve_name GRPC_SHADOW_EC_KEY_marshal_curve_name
+#define EC_KEY_marshal_private_key GRPC_SHADOW_EC_KEY_marshal_private_key
+#define EC_KEY_new GRPC_SHADOW_EC_KEY_new
+#define EC_KEY_new_by_curve_name GRPC_SHADOW_EC_KEY_new_by_curve_name
+#define EC_KEY_new_method GRPC_SHADOW_EC_KEY_new_method
+#define EC_KEY_parse_curve_name GRPC_SHADOW_EC_KEY_parse_curve_name
+#define EC_KEY_parse_parameters GRPC_SHADOW_EC_KEY_parse_parameters
+#define EC_KEY_parse_private_key GRPC_SHADOW_EC_KEY_parse_private_key
+#define EC_KEY_set_asn1_flag GRPC_SHADOW_EC_KEY_set_asn1_flag
+#define EC_KEY_set_conv_form GRPC_SHADOW_EC_KEY_set_conv_form
+#define EC_KEY_set_enc_flags GRPC_SHADOW_EC_KEY_set_enc_flags
+#define EC_KEY_set_ex_data GRPC_SHADOW_EC_KEY_set_ex_data
+#define EC_KEY_set_group GRPC_SHADOW_EC_KEY_set_group
+#define EC_KEY_set_private_key GRPC_SHADOW_EC_KEY_set_private_key
+#define EC_KEY_set_public_key GRPC_SHADOW_EC_KEY_set_public_key
+#define EC_KEY_set_public_key_affine_coordinates GRPC_SHADOW_EC_KEY_set_public_key_affine_coordinates
+#define EC_KEY_up_ref GRPC_SHADOW_EC_KEY_up_ref
+#define EC_METHOD_get_field_type GRPC_SHADOW_EC_METHOD_get_field_type
+#define ec_pkey_meth GRPC_SHADOW_ec_pkey_meth
+#define ecp_nistz256_avx2_select_w7 GRPC_SHADOW_ecp_nistz256_avx2_select_w7
+#define ecp_nistz256_mul_mont GRPC_SHADOW_ecp_nistz256_mul_mont
+#define ecp_nistz256_neg GRPC_SHADOW_ecp_nistz256_neg
+#define ecp_nistz256_ord_mul_mont GRPC_SHADOW_ecp_nistz256_ord_mul_mont
+#define ecp_nistz256_ord_sqr_mont GRPC_SHADOW_ecp_nistz256_ord_sqr_mont
+#define ecp_nistz256_point_add GRPC_SHADOW_ecp_nistz256_point_add
+#define ecp_nistz256_point_add_affine GRPC_SHADOW_ecp_nistz256_point_add_affine
+#define ecp_nistz256_point_double GRPC_SHADOW_ecp_nistz256_point_double
+#define ecp_nistz256_select_w5 GRPC_SHADOW_ecp_nistz256_select_w5
+#define ecp_nistz256_select_w7 GRPC_SHADOW_ecp_nistz256_select_w7
+#define ecp_nistz256_sqr_mont GRPC_SHADOW_ecp_nistz256_sqr_mont
+#define EC_POINT_add GRPC_SHADOW_EC_POINT_add
+#define EC_POINT_clear_free GRPC_SHADOW_EC_POINT_clear_free
+#define EC_POINT_cmp GRPC_SHADOW_EC_POINT_cmp
+#define EC_POINT_copy GRPC_SHADOW_EC_POINT_copy
+#define EC_POINT_dbl GRPC_SHADOW_EC_POINT_dbl
+#define EC_POINT_dup GRPC_SHADOW_EC_POINT_dup
+#define EC_POINT_free GRPC_SHADOW_EC_POINT_free
+#define ec_point_get_affine_coordinate_bytes GRPC_SHADOW_ec_point_get_affine_coordinate_bytes
+#define EC_POINT_get_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_get_affine_coordinates_GFp
+#define EC_POINT_invert GRPC_SHADOW_EC_POINT_invert
+#define EC_POINT_is_at_infinity GRPC_SHADOW_EC_POINT_is_at_infinity
+#define EC_POINT_is_on_curve GRPC_SHADOW_EC_POINT_is_on_curve
+#define EC_POINT_mul GRPC_SHADOW_EC_POINT_mul
+#define ec_point_mul_scalar GRPC_SHADOW_ec_point_mul_scalar
+#define ec_point_mul_scalar_base GRPC_SHADOW_ec_point_mul_scalar_base
+#define ec_point_mul_scalar_public GRPC_SHADOW_ec_point_mul_scalar_public
+#define EC_POINT_new GRPC_SHADOW_EC_POINT_new
+#define EC_POINT_oct2point GRPC_SHADOW_EC_POINT_oct2point
+#define EC_POINT_point2cbb GRPC_SHADOW_EC_POINT_point2cbb
+#define EC_POINT_point2oct GRPC_SHADOW_EC_POINT_point2oct
+#define EC_POINT_set_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_set_affine_coordinates_GFp
+#define EC_POINT_set_compressed_coordinates_GFp GRPC_SHADOW_EC_POINT_set_compressed_coordinates_GFp
+#define EC_POINT_set_to_infinity GRPC_SHADOW_EC_POINT_set_to_infinity
+#define ec_random_nonzero_scalar GRPC_SHADOW_ec_random_nonzero_scalar
+#define ec_scalar_add GRPC_SHADOW_ec_scalar_add
+#define ec_scalar_equal_vartime GRPC_SHADOW_ec_scalar_equal_vartime
+#define ec_scalar_from_montgomery GRPC_SHADOW_ec_scalar_from_montgomery
+#define ec_scalar_inv_montgomery GRPC_SHADOW_ec_scalar_inv_montgomery
+#define ec_scalar_inv_montgomery_vartime GRPC_SHADOW_ec_scalar_inv_montgomery_vartime
+#define ec_scalar_is_zero GRPC_SHADOW_ec_scalar_is_zero
+#define ec_scalar_mul_montgomery GRPC_SHADOW_ec_scalar_mul_montgomery
+#define ec_scalar_to_montgomery GRPC_SHADOW_ec_scalar_to_montgomery
+#define ec_simple_scalar_inv_montgomery GRPC_SHADOW_ec_simple_scalar_inv_montgomery
+#define ed25519_asn1_meth GRPC_SHADOW_ed25519_asn1_meth
+#define ED25519_keypair GRPC_SHADOW_ED25519_keypair
+#define ED25519_keypair_from_seed GRPC_SHADOW_ED25519_keypair_from_seed
+#define ed25519_pkey_meth GRPC_SHADOW_ed25519_pkey_meth
+#define ED25519_sign GRPC_SHADOW_ED25519_sign
+#define ED25519_verify GRPC_SHADOW_ED25519_verify
+#define EDIPARTYNAME_free GRPC_SHADOW_EDIPARTYNAME_free
+#define EDIPARTYNAME_it GRPC_SHADOW_EDIPARTYNAME_it
+#define EDIPARTYNAME_new GRPC_SHADOW_EDIPARTYNAME_new
+#define ENGINE_free GRPC_SHADOW_ENGINE_free
+#define ENGINE_get_ECDSA_method GRPC_SHADOW_ENGINE_get_ECDSA_method
+#define ENGINE_get_RSA_method GRPC_SHADOW_ENGINE_get_RSA_method
+#define ENGINE_load_builtin_engines GRPC_SHADOW_ENGINE_load_builtin_engines
+#define ENGINE_new GRPC_SHADOW_ENGINE_new
+#define ENGINE_register_all_complete GRPC_SHADOW_ENGINE_register_all_complete
+#define ENGINE_set_ECDSA_method GRPC_SHADOW_ENGINE_set_ECDSA_method
+#define ENGINE_set_RSA_method GRPC_SHADOW_ENGINE_set_RSA_method
+#define ERR_add_error_data GRPC_SHADOW_ERR_add_error_data
+#define ERR_add_error_dataf GRPC_SHADOW_ERR_add_error_dataf
+#define ERR_clear_error GRPC_SHADOW_ERR_clear_error
+#define ERR_clear_system_error GRPC_SHADOW_ERR_clear_system_error
+#define ERR_error_string GRPC_SHADOW_ERR_error_string
+#define ERR_error_string_n GRPC_SHADOW_ERR_error_string_n
+#define ERR_free_strings GRPC_SHADOW_ERR_free_strings
+#define ERR_func_error_string GRPC_SHADOW_ERR_func_error_string
+#define ERR_get_error GRPC_SHADOW_ERR_get_error
+#define ERR_get_error_line GRPC_SHADOW_ERR_get_error_line
+#define ERR_get_error_line_data GRPC_SHADOW_ERR_get_error_line_data
+#define ERR_get_next_error_library GRPC_SHADOW_ERR_get_next_error_library
+#define ERR_lib_error_string GRPC_SHADOW_ERR_lib_error_string
+#define ERR_load_BIO_strings GRPC_SHADOW_ERR_load_BIO_strings
+#define ERR_load_crypto_strings GRPC_SHADOW_ERR_load_crypto_strings
+#define ERR_load_ERR_strings GRPC_SHADOW_ERR_load_ERR_strings
+#define ERR_load_RAND_strings GRPC_SHADOW_ERR_load_RAND_strings
+#define ERR_load_SSL_strings GRPC_SHADOW_ERR_load_SSL_strings
+#define ERR_peek_error GRPC_SHADOW_ERR_peek_error
+#define ERR_peek_error_line GRPC_SHADOW_ERR_peek_error_line
+#define ERR_peek_error_line_data GRPC_SHADOW_ERR_peek_error_line_data
+#define ERR_peek_last_error GRPC_SHADOW_ERR_peek_last_error
+#define ERR_peek_last_error_line GRPC_SHADOW_ERR_peek_last_error_line
+#define ERR_peek_last_error_line_data GRPC_SHADOW_ERR_peek_last_error_line_data
+#define ERR_pop_to_mark GRPC_SHADOW_ERR_pop_to_mark
+#define ERR_print_errors GRPC_SHADOW_ERR_print_errors
+#define ERR_print_errors_cb GRPC_SHADOW_ERR_print_errors_cb
+#define ERR_print_errors_fp GRPC_SHADOW_ERR_print_errors_fp
+#define ERR_put_error GRPC_SHADOW_ERR_put_error
+#define ERR_reason_error_string GRPC_SHADOW_ERR_reason_error_string
+#define ERR_remove_state GRPC_SHADOW_ERR_remove_state
+#define ERR_remove_thread_state GRPC_SHADOW_ERR_remove_thread_state
+#define ERR_restore_state GRPC_SHADOW_ERR_restore_state
+#define ERR_save_state GRPC_SHADOW_ERR_save_state
+#define ERR_SAVE_STATE_free GRPC_SHADOW_ERR_SAVE_STATE_free
+#define ERR_set_mark GRPC_SHADOW_ERR_set_mark
+#define EVP_add_cipher_alias GRPC_SHADOW_EVP_add_cipher_alias
+#define EVP_add_digest GRPC_SHADOW_EVP_add_digest
+#define EVP_aead_aes_128_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls
+#define EVP_aead_aes_128_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_128_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha256_tls
+#define EVP_aead_aes_128_ccm_bluetooth GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth
+#define EVP_aead_aes_128_ccm_bluetooth_8 GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth_8
+#define EVP_aead_aes_128_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_128_ctr_hmac_sha256
+#define EVP_aead_aes_128_gcm GRPC_SHADOW_EVP_aead_aes_128_gcm
+#define EVP_aead_aes_128_gcm_siv GRPC_SHADOW_EVP_aead_aes_128_gcm_siv
+#define EVP_aead_aes_128_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls12
+#define EVP_aead_aes_128_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls13
+#define EVP_aead_aes_192_gcm GRPC_SHADOW_EVP_aead_aes_192_gcm
+#define EVP_aead_aes_256_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls
+#define EVP_aead_aes_256_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_256_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha256_tls
+#define EVP_aead_aes_256_cbc_sha384_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha384_tls
+#define EVP_aead_aes_256_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_256_ctr_hmac_sha256
+#define EVP_aead_aes_256_gcm GRPC_SHADOW_EVP_aead_aes_256_gcm
+#define EVP_aead_aes_256_gcm_siv GRPC_SHADOW_EVP_aead_aes_256_gcm_siv
+#define EVP_aead_aes_256_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls12
+#define EVP_aead_aes_256_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls13
+#define EVP_aead_chacha20_poly1305 GRPC_SHADOW_EVP_aead_chacha20_poly1305
+#define EVP_AEAD_CTX_aead GRPC_SHADOW_EVP_AEAD_CTX_aead
+#define EVP_AEAD_CTX_cleanup GRPC_SHADOW_EVP_AEAD_CTX_cleanup
+#define EVP_AEAD_CTX_free GRPC_SHADOW_EVP_AEAD_CTX_free
+#define EVP_AEAD_CTX_get_iv GRPC_SHADOW_EVP_AEAD_CTX_get_iv
+#define EVP_AEAD_CTX_init GRPC_SHADOW_EVP_AEAD_CTX_init
+#define EVP_AEAD_CTX_init_with_direction GRPC_SHADOW_EVP_AEAD_CTX_init_with_direction
+#define EVP_AEAD_CTX_new GRPC_SHADOW_EVP_AEAD_CTX_new
+#define EVP_AEAD_CTX_open GRPC_SHADOW_EVP_AEAD_CTX_open
+#define EVP_AEAD_CTX_open_gather GRPC_SHADOW_EVP_AEAD_CTX_open_gather
+#define EVP_AEAD_CTX_seal GRPC_SHADOW_EVP_AEAD_CTX_seal
+#define EVP_AEAD_CTX_seal_scatter GRPC_SHADOW_EVP_AEAD_CTX_seal_scatter
+#define EVP_AEAD_CTX_tag_len GRPC_SHADOW_EVP_AEAD_CTX_tag_len
+#define EVP_AEAD_CTX_zero GRPC_SHADOW_EVP_AEAD_CTX_zero
+#define EVP_aead_des_ede3_cbc_sha1_tls GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls
+#define EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv
+#define EVP_AEAD_key_length GRPC_SHADOW_EVP_AEAD_key_length
+#define EVP_AEAD_max_overhead GRPC_SHADOW_EVP_AEAD_max_overhead
+#define EVP_AEAD_max_tag_len GRPC_SHADOW_EVP_AEAD_max_tag_len
+#define EVP_AEAD_nonce_length GRPC_SHADOW_EVP_AEAD_nonce_length
+#define EVP_aead_null_sha1_tls GRPC_SHADOW_EVP_aead_null_sha1_tls
+#define EVP_aead_xchacha20_poly1305 GRPC_SHADOW_EVP_aead_xchacha20_poly1305
+#define EVP_aes_128_cbc GRPC_SHADOW_EVP_aes_128_cbc
+#define EVP_aes_128_ctr GRPC_SHADOW_EVP_aes_128_ctr
+#define EVP_aes_128_ecb GRPC_SHADOW_EVP_aes_128_ecb
+#define EVP_aes_128_gcm GRPC_SHADOW_EVP_aes_128_gcm
+#define EVP_aes_128_ofb GRPC_SHADOW_EVP_aes_128_ofb
+#define EVP_aes_192_cbc GRPC_SHADOW_EVP_aes_192_cbc
+#define EVP_aes_192_ctr GRPC_SHADOW_EVP_aes_192_ctr
+#define EVP_aes_192_ecb GRPC_SHADOW_EVP_aes_192_ecb
+#define EVP_aes_192_gcm GRPC_SHADOW_EVP_aes_192_gcm
+#define EVP_aes_192_ofb GRPC_SHADOW_EVP_aes_192_ofb
+#define EVP_aes_256_cbc GRPC_SHADOW_EVP_aes_256_cbc
+#define EVP_aes_256_ctr GRPC_SHADOW_EVP_aes_256_ctr
+#define EVP_aes_256_ecb GRPC_SHADOW_EVP_aes_256_ecb
+#define EVP_aes_256_gcm GRPC_SHADOW_EVP_aes_256_gcm
+#define EVP_aes_256_ofb GRPC_SHADOW_EVP_aes_256_ofb
+#define EVP_BytesToKey GRPC_SHADOW_EVP_BytesToKey
+#define EVP_Cipher GRPC_SHADOW_EVP_Cipher
+#define EVP_CIPHER_block_size GRPC_SHADOW_EVP_CIPHER_block_size
+#define EVP_CIPHER_CTX_block_size GRPC_SHADOW_EVP_CIPHER_CTX_block_size
+#define EVP_CIPHER_CTX_cipher GRPC_SHADOW_EVP_CIPHER_CTX_cipher
+#define EVP_CIPHER_CTX_cleanup GRPC_SHADOW_EVP_CIPHER_CTX_cleanup
+#define EVP_CIPHER_CTX_copy GRPC_SHADOW_EVP_CIPHER_CTX_copy
+#define EVP_CIPHER_CTX_ctrl GRPC_SHADOW_EVP_CIPHER_CTX_ctrl
+#define EVP_CIPHER_CTX_encrypting GRPC_SHADOW_EVP_CIPHER_CTX_encrypting
+#define EVP_CIPHER_CTX_flags GRPC_SHADOW_EVP_CIPHER_CTX_flags
+#define EVP_CIPHER_CTX_free GRPC_SHADOW_EVP_CIPHER_CTX_free
+#define EVP_CIPHER_CTX_get_app_data GRPC_SHADOW_EVP_CIPHER_CTX_get_app_data
+#define EVP_CIPHER_CTX_init GRPC_SHADOW_EVP_CIPHER_CTX_init
+#define EVP_CIPHER_CTX_iv_length GRPC_SHADOW_EVP_CIPHER_CTX_iv_length
+#define EVP_CIPHER_CTX_key_length GRPC_SHADOW_EVP_CIPHER_CTX_key_length
+#define EVP_CIPHER_CTX_mode GRPC_SHADOW_EVP_CIPHER_CTX_mode
+#define EVP_CIPHER_CTX_new GRPC_SHADOW_EVP_CIPHER_CTX_new
+#define EVP_CIPHER_CTX_nid GRPC_SHADOW_EVP_CIPHER_CTX_nid
+#define EVP_CIPHER_CTX_reset GRPC_SHADOW_EVP_CIPHER_CTX_reset
+#define EVP_CIPHER_CTX_set_app_data GRPC_SHADOW_EVP_CIPHER_CTX_set_app_data
+#define EVP_CIPHER_CTX_set_flags GRPC_SHADOW_EVP_CIPHER_CTX_set_flags
+#define EVP_CIPHER_CTX_set_key_length GRPC_SHADOW_EVP_CIPHER_CTX_set_key_length
+#define EVP_CIPHER_CTX_set_padding GRPC_SHADOW_EVP_CIPHER_CTX_set_padding
+#define EVP_CipherFinal_ex GRPC_SHADOW_EVP_CipherFinal_ex
+#define EVP_CIPHER_flags GRPC_SHADOW_EVP_CIPHER_flags
+#define EVP_CipherInit GRPC_SHADOW_EVP_CipherInit
+#define EVP_CipherInit_ex GRPC_SHADOW_EVP_CipherInit_ex
+#define EVP_CIPHER_iv_length GRPC_SHADOW_EVP_CIPHER_iv_length
+#define EVP_CIPHER_key_length GRPC_SHADOW_EVP_CIPHER_key_length
+#define EVP_CIPHER_mode GRPC_SHADOW_EVP_CIPHER_mode
+#define EVP_CIPHER_nid GRPC_SHADOW_EVP_CIPHER_nid
+#define EVP_CipherUpdate GRPC_SHADOW_EVP_CipherUpdate
+#define EVP_cleanup GRPC_SHADOW_EVP_cleanup
+#define EVP_DecodeBase64 GRPC_SHADOW_EVP_DecodeBase64
+#define EVP_DecodeBlock GRPC_SHADOW_EVP_DecodeBlock
+#define EVP_DecodedLength GRPC_SHADOW_EVP_DecodedLength
+#define EVP_DecodeFinal GRPC_SHADOW_EVP_DecodeFinal
+#define EVP_DecodeInit GRPC_SHADOW_EVP_DecodeInit
+#define EVP_DecodeUpdate GRPC_SHADOW_EVP_DecodeUpdate
+#define EVP_DecryptFinal_ex GRPC_SHADOW_EVP_DecryptFinal_ex
+#define EVP_DecryptInit GRPC_SHADOW_EVP_DecryptInit
+#define EVP_DecryptInit_ex GRPC_SHADOW_EVP_DecryptInit_ex
+#define EVP_DecryptUpdate GRPC_SHADOW_EVP_DecryptUpdate
+#define EVP_des_cbc GRPC_SHADOW_EVP_des_cbc
+#define EVP_des_ecb GRPC_SHADOW_EVP_des_ecb
+#define EVP_des_ede GRPC_SHADOW_EVP_des_ede
+#define EVP_des_ede3 GRPC_SHADOW_EVP_des_ede3
+#define EVP_des_ede3_cbc GRPC_SHADOW_EVP_des_ede3_cbc
+#define EVP_des_ede3_ecb GRPC_SHADOW_EVP_des_ede3_ecb
+#define EVP_des_ede_cbc GRPC_SHADOW_EVP_des_ede_cbc
+#define EVP_Digest GRPC_SHADOW_EVP_Digest
+#define EVP_DigestFinal GRPC_SHADOW_EVP_DigestFinal
+#define EVP_DigestFinal_ex GRPC_SHADOW_EVP_DigestFinal_ex
+#define EVP_DigestFinalXOF GRPC_SHADOW_EVP_DigestFinalXOF
+#define EVP_DigestInit GRPC_SHADOW_EVP_DigestInit
+#define EVP_DigestInit_ex GRPC_SHADOW_EVP_DigestInit_ex
+#define EVP_DigestSign GRPC_SHADOW_EVP_DigestSign
+#define EVP_DigestSignFinal GRPC_SHADOW_EVP_DigestSignFinal
+#define EVP_DigestSignInit GRPC_SHADOW_EVP_DigestSignInit
+#define EVP_DigestSignUpdate GRPC_SHADOW_EVP_DigestSignUpdate
+#define EVP_DigestUpdate GRPC_SHADOW_EVP_DigestUpdate
+#define EVP_DigestVerify GRPC_SHADOW_EVP_DigestVerify
+#define EVP_DigestVerifyFinal GRPC_SHADOW_EVP_DigestVerifyFinal
+#define EVP_DigestVerifyInit GRPC_SHADOW_EVP_DigestVerifyInit
+#define EVP_DigestVerifyUpdate GRPC_SHADOW_EVP_DigestVerifyUpdate
+#define EVP_enc_null GRPC_SHADOW_EVP_enc_null
+#define EVP_EncodeBlock GRPC_SHADOW_EVP_EncodeBlock
+#define EVP_EncodedLength GRPC_SHADOW_EVP_EncodedLength
+#define EVP_EncodeFinal GRPC_SHADOW_EVP_EncodeFinal
+#define EVP_EncodeInit GRPC_SHADOW_EVP_EncodeInit
+#define EVP_EncodeUpdate GRPC_SHADOW_EVP_EncodeUpdate
+#define EVP_EncryptFinal_ex GRPC_SHADOW_EVP_EncryptFinal_ex
+#define EVP_EncryptInit GRPC_SHADOW_EVP_EncryptInit
+#define EVP_EncryptInit_ex GRPC_SHADOW_EVP_EncryptInit_ex
+#define EVP_EncryptUpdate GRPC_SHADOW_EVP_EncryptUpdate
+#define EVP_get_cipherbyname GRPC_SHADOW_EVP_get_cipherbyname
+#define EVP_get_cipherbynid GRPC_SHADOW_EVP_get_cipherbynid
+#define EVP_get_digestbyname GRPC_SHADOW_EVP_get_digestbyname
+#define EVP_get_digestbynid GRPC_SHADOW_EVP_get_digestbynid
+#define EVP_get_digestbyobj GRPC_SHADOW_EVP_get_digestbyobj
+#define EVP_has_aes_hardware GRPC_SHADOW_EVP_has_aes_hardware
+#define EVP_marshal_digest_algorithm GRPC_SHADOW_EVP_marshal_digest_algorithm
+#define EVP_marshal_private_key GRPC_SHADOW_EVP_marshal_private_key
+#define EVP_marshal_public_key GRPC_SHADOW_EVP_marshal_public_key
+#define EVP_md4 GRPC_SHADOW_EVP_md4
+#define EVP_md5 GRPC_SHADOW_EVP_md5
+#define EVP_md5_sha1 GRPC_SHADOW_EVP_md5_sha1
+#define EVP_MD_block_size GRPC_SHADOW_EVP_MD_block_size
+#define EVP_MD_CTX_block_size GRPC_SHADOW_EVP_MD_CTX_block_size
+#define EVP_MD_CTX_cleanup GRPC_SHADOW_EVP_MD_CTX_cleanup
+#define EVP_MD_CTX_copy GRPC_SHADOW_EVP_MD_CTX_copy
+#define EVP_MD_CTX_copy_ex GRPC_SHADOW_EVP_MD_CTX_copy_ex
+#define EVP_MD_CTX_create GRPC_SHADOW_EVP_MD_CTX_create
+#define EVP_MD_CTX_destroy GRPC_SHADOW_EVP_MD_CTX_destroy
+#define EVP_MD_CTX_free GRPC_SHADOW_EVP_MD_CTX_free
+#define EVP_MD_CTX_init GRPC_SHADOW_EVP_MD_CTX_init
+#define EVP_MD_CTX_md GRPC_SHADOW_EVP_MD_CTX_md
+#define EVP_MD_CTX_new GRPC_SHADOW_EVP_MD_CTX_new
+#define EVP_MD_CTX_reset GRPC_SHADOW_EVP_MD_CTX_reset
+#define EVP_MD_CTX_size GRPC_SHADOW_EVP_MD_CTX_size
+#define EVP_MD_CTX_type GRPC_SHADOW_EVP_MD_CTX_type
+#define EVP_MD_flags GRPC_SHADOW_EVP_MD_flags
+#define EVP_MD_meth_get_flags GRPC_SHADOW_EVP_MD_meth_get_flags
+#define EVP_MD_size GRPC_SHADOW_EVP_MD_size
+#define EVP_MD_type GRPC_SHADOW_EVP_MD_type
+#define EVP_parse_digest_algorithm GRPC_SHADOW_EVP_parse_digest_algorithm
+#define EVP_parse_private_key GRPC_SHADOW_EVP_parse_private_key
+#define EVP_parse_public_key GRPC_SHADOW_EVP_parse_public_key
+#define EVP_PBE_scrypt GRPC_SHADOW_EVP_PBE_scrypt
+#define EVP_PKCS82PKEY GRPC_SHADOW_EVP_PKCS82PKEY
+#define EVP_PKEY2PKCS8 GRPC_SHADOW_EVP_PKEY2PKCS8
+#define EVP_PKEY_assign GRPC_SHADOW_EVP_PKEY_assign
+#define EVP_PKEY_assign_DSA GRPC_SHADOW_EVP_PKEY_assign_DSA
+#define EVP_PKEY_assign_EC_KEY GRPC_SHADOW_EVP_PKEY_assign_EC_KEY
+#define EVP_PKEY_assign_RSA GRPC_SHADOW_EVP_PKEY_assign_RSA
+#define EVP_PKEY_base_id GRPC_SHADOW_EVP_PKEY_base_id
+#define EVP_PKEY_bits GRPC_SHADOW_EVP_PKEY_bits
+#define EVP_PKEY_cmp GRPC_SHADOW_EVP_PKEY_cmp
+#define EVP_PKEY_cmp_parameters GRPC_SHADOW_EVP_PKEY_cmp_parameters
+#define EVP_PKEY_copy_parameters GRPC_SHADOW_EVP_PKEY_copy_parameters
+#define EVP_PKEY_CTX_ctrl GRPC_SHADOW_EVP_PKEY_CTX_ctrl
+#define EVP_PKEY_CTX_dup GRPC_SHADOW_EVP_PKEY_CTX_dup
+#define EVP_PKEY_CTX_free GRPC_SHADOW_EVP_PKEY_CTX_free
+#define EVP_PKEY_CTX_get0_pkey GRPC_SHADOW_EVP_PKEY_CTX_get0_pkey
+#define EVP_PKEY_CTX_get0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_get0_rsa_oaep_label
+#define EVP_PKEY_CTX_get_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_mgf1_md
+#define EVP_PKEY_CTX_get_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_oaep_md
+#define EVP_PKEY_CTX_get_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_padding
+#define EVP_PKEY_CTX_get_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_pss_saltlen
+#define EVP_PKEY_CTX_get_signature_md GRPC_SHADOW_EVP_PKEY_CTX_get_signature_md
+#define EVP_PKEY_CTX_new GRPC_SHADOW_EVP_PKEY_CTX_new
+#define EVP_PKEY_CTX_new_id GRPC_SHADOW_EVP_PKEY_CTX_new_id
+#define EVP_PKEY_CTX_set0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_set0_rsa_oaep_label
+#define EVP_PKEY_CTX_set_ec_param_enc GRPC_SHADOW_EVP_PKEY_CTX_set_ec_param_enc
+#define EVP_PKEY_CTX_set_ec_paramgen_curve_nid GRPC_SHADOW_EVP_PKEY_CTX_set_ec_paramgen_curve_nid
+#define EVP_PKEY_CTX_set_rsa_keygen_bits GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_bits
+#define EVP_PKEY_CTX_set_rsa_keygen_pubexp GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_pubexp
+#define EVP_PKEY_CTX_set_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_oaep_md
+#define EVP_PKEY_CTX_set_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_padding
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen
+#define EVP_PKEY_CTX_set_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_saltlen
+#define EVP_PKEY_CTX_set_signature_md GRPC_SHADOW_EVP_PKEY_CTX_set_signature_md
+#define EVP_PKEY_decrypt GRPC_SHADOW_EVP_PKEY_decrypt
+#define EVP_PKEY_decrypt_init GRPC_SHADOW_EVP_PKEY_decrypt_init
+#define EVP_PKEY_derive GRPC_SHADOW_EVP_PKEY_derive
+#define EVP_PKEY_derive_init GRPC_SHADOW_EVP_PKEY_derive_init
+#define EVP_PKEY_derive_set_peer GRPC_SHADOW_EVP_PKEY_derive_set_peer
+#define EVP_PKEY_encrypt GRPC_SHADOW_EVP_PKEY_encrypt
+#define EVP_PKEY_encrypt_init GRPC_SHADOW_EVP_PKEY_encrypt_init
+#define EVP_PKEY_free GRPC_SHADOW_EVP_PKEY_free
+#define EVP_PKEY_get0_DH GRPC_SHADOW_EVP_PKEY_get0_DH
+#define EVP_PKEY_get0_DSA GRPC_SHADOW_EVP_PKEY_get0_DSA
+#define EVP_PKEY_get0_EC_KEY GRPC_SHADOW_EVP_PKEY_get0_EC_KEY
+#define EVP_PKEY_get0_RSA GRPC_SHADOW_EVP_PKEY_get0_RSA
+#define EVP_PKEY_get1_DH GRPC_SHADOW_EVP_PKEY_get1_DH
+#define EVP_PKEY_get1_DSA GRPC_SHADOW_EVP_PKEY_get1_DSA
+#define EVP_PKEY_get1_EC_KEY GRPC_SHADOW_EVP_PKEY_get1_EC_KEY
+#define EVP_PKEY_get1_RSA GRPC_SHADOW_EVP_PKEY_get1_RSA
+#define EVP_PKEY_get1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_get1_tls_encodedpoint
+#define EVP_PKEY_get_raw_private_key GRPC_SHADOW_EVP_PKEY_get_raw_private_key
+#define EVP_PKEY_get_raw_public_key GRPC_SHADOW_EVP_PKEY_get_raw_public_key
+#define EVP_PKEY_id GRPC_SHADOW_EVP_PKEY_id
+#define EVP_PKEY_is_opaque GRPC_SHADOW_EVP_PKEY_is_opaque
+#define EVP_PKEY_keygen GRPC_SHADOW_EVP_PKEY_keygen
+#define EVP_PKEY_keygen_init GRPC_SHADOW_EVP_PKEY_keygen_init
+#define EVP_PKEY_missing_parameters GRPC_SHADOW_EVP_PKEY_missing_parameters
+#define EVP_PKEY_new GRPC_SHADOW_EVP_PKEY_new
+#define EVP_PKEY_new_raw_private_key GRPC_SHADOW_EVP_PKEY_new_raw_private_key
+#define EVP_PKEY_new_raw_public_key GRPC_SHADOW_EVP_PKEY_new_raw_public_key
+#define EVP_PKEY_paramgen GRPC_SHADOW_EVP_PKEY_paramgen
+#define EVP_PKEY_paramgen_init GRPC_SHADOW_EVP_PKEY_paramgen_init
+#define EVP_PKEY_print_params GRPC_SHADOW_EVP_PKEY_print_params
+#define EVP_PKEY_print_private GRPC_SHADOW_EVP_PKEY_print_private
+#define EVP_PKEY_print_public GRPC_SHADOW_EVP_PKEY_print_public
+#define EVP_PKEY_set1_DSA GRPC_SHADOW_EVP_PKEY_set1_DSA
+#define EVP_PKEY_set1_EC_KEY GRPC_SHADOW_EVP_PKEY_set1_EC_KEY
+#define EVP_PKEY_set1_RSA GRPC_SHADOW_EVP_PKEY_set1_RSA
+#define EVP_PKEY_set1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_set1_tls_encodedpoint
+#define EVP_PKEY_set_type GRPC_SHADOW_EVP_PKEY_set_type
+#define EVP_PKEY_sign GRPC_SHADOW_EVP_PKEY_sign
+#define EVP_PKEY_sign_init GRPC_SHADOW_EVP_PKEY_sign_init
+#define EVP_PKEY_size GRPC_SHADOW_EVP_PKEY_size
+#define EVP_PKEY_type GRPC_SHADOW_EVP_PKEY_type
+#define EVP_PKEY_up_ref GRPC_SHADOW_EVP_PKEY_up_ref
+#define EVP_PKEY_verify GRPC_SHADOW_EVP_PKEY_verify
+#define EVP_PKEY_verify_init GRPC_SHADOW_EVP_PKEY_verify_init
+#define EVP_PKEY_verify_recover GRPC_SHADOW_EVP_PKEY_verify_recover
+#define EVP_PKEY_verify_recover_init GRPC_SHADOW_EVP_PKEY_verify_recover_init
+#define EVP_rc2_40_cbc GRPC_SHADOW_EVP_rc2_40_cbc
+#define EVP_rc2_cbc GRPC_SHADOW_EVP_rc2_cbc
+#define EVP_rc4 GRPC_SHADOW_EVP_rc4
+#define EVP_sha1 GRPC_SHADOW_EVP_sha1
+#define EVP_sha224 GRPC_SHADOW_EVP_sha224
+#define EVP_sha256 GRPC_SHADOW_EVP_sha256
+#define EVP_sha384 GRPC_SHADOW_EVP_sha384
+#define EVP_sha512 GRPC_SHADOW_EVP_sha512
+#define EVP_SignFinal GRPC_SHADOW_EVP_SignFinal
+#define EVP_SignInit GRPC_SHADOW_EVP_SignInit
+#define EVP_SignInit_ex GRPC_SHADOW_EVP_SignInit_ex
+#define EVP_SignUpdate GRPC_SHADOW_EVP_SignUpdate
+#define EVP_tls_cbc_copy_mac GRPC_SHADOW_EVP_tls_cbc_copy_mac
+#define EVP_tls_cbc_digest_record GRPC_SHADOW_EVP_tls_cbc_digest_record
+#define EVP_tls_cbc_record_digest_supported GRPC_SHADOW_EVP_tls_cbc_record_digest_supported
+#define EVP_tls_cbc_remove_padding GRPC_SHADOW_EVP_tls_cbc_remove_padding
+#define EVP_VerifyFinal GRPC_SHADOW_EVP_VerifyFinal
+#define EVP_VerifyInit GRPC_SHADOW_EVP_VerifyInit
+#define EVP_VerifyInit_ex GRPC_SHADOW_EVP_VerifyInit_ex
+#define EVP_VerifyUpdate GRPC_SHADOW_EVP_VerifyUpdate
+#define EXTENDED_KEY_USAGE_free GRPC_SHADOW_EXTENDED_KEY_USAGE_free
+#define EXTENDED_KEY_USAGE_it GRPC_SHADOW_EXTENDED_KEY_USAGE_it
+#define EXTENDED_KEY_USAGE_new GRPC_SHADOW_EXTENDED_KEY_USAGE_new
+#define FIPS_mode GRPC_SHADOW_FIPS_mode
+#define FIPS_mode_set GRPC_SHADOW_FIPS_mode_set
+#define gcm_ghash_avx GRPC_SHADOW_gcm_ghash_avx
+#define gcm_ghash_clmul GRPC_SHADOW_gcm_ghash_clmul
+#define gcm_ghash_nohw GRPC_SHADOW_gcm_ghash_nohw
+#define gcm_ghash_ssse3 GRPC_SHADOW_gcm_ghash_ssse3
+#define gcm_gmult_avx GRPC_SHADOW_gcm_gmult_avx
+#define gcm_gmult_clmul GRPC_SHADOW_gcm_gmult_clmul
+#define gcm_gmult_nohw GRPC_SHADOW_gcm_gmult_nohw
+#define gcm_gmult_ssse3 GRPC_SHADOW_gcm_gmult_ssse3
+#define gcm_init_avx GRPC_SHADOW_gcm_init_avx
+#define gcm_init_clmul GRPC_SHADOW_gcm_init_clmul
+#define gcm_init_nohw GRPC_SHADOW_gcm_init_nohw
+#define gcm_init_ssse3 GRPC_SHADOW_gcm_init_ssse3
+#define GENERAL_NAME_cmp GRPC_SHADOW_GENERAL_NAME_cmp
+#define GENERAL_NAME_dup GRPC_SHADOW_GENERAL_NAME_dup
+#define GENERAL_NAME_free GRPC_SHADOW_GENERAL_NAME_free
+#define GENERAL_NAME_get0_otherName GRPC_SHADOW_GENERAL_NAME_get0_otherName
+#define GENERAL_NAME_get0_value GRPC_SHADOW_GENERAL_NAME_get0_value
+#define GENERAL_NAME_it GRPC_SHADOW_GENERAL_NAME_it
+#define GENERAL_NAME_new GRPC_SHADOW_GENERAL_NAME_new
+#define GENERAL_NAME_print GRPC_SHADOW_GENERAL_NAME_print
+#define GENERAL_NAME_set0_othername GRPC_SHADOW_GENERAL_NAME_set0_othername
+#define GENERAL_NAME_set0_value GRPC_SHADOW_GENERAL_NAME_set0_value
+#define GENERAL_NAMES_free GRPC_SHADOW_GENERAL_NAMES_free
+#define GENERAL_NAMES_it GRPC_SHADOW_GENERAL_NAMES_it
+#define GENERAL_NAMES_new GRPC_SHADOW_GENERAL_NAMES_new
+#define GENERAL_SUBTREE_free GRPC_SHADOW_GENERAL_SUBTREE_free
+#define GENERAL_SUBTREE_it GRPC_SHADOW_GENERAL_SUBTREE_it
+#define GENERAL_SUBTREE_new GRPC_SHADOW_GENERAL_SUBTREE_new
+#define HKDF GRPC_SHADOW_HKDF
+#define HKDF_expand GRPC_SHADOW_HKDF_expand
+#define HKDF_extract GRPC_SHADOW_HKDF_extract
+#define HMAC GRPC_SHADOW_HMAC
+#define HMAC_CTX_cleanup GRPC_SHADOW_HMAC_CTX_cleanup
+#define HMAC_CTX_copy GRPC_SHADOW_HMAC_CTX_copy
+#define HMAC_CTX_copy_ex GRPC_SHADOW_HMAC_CTX_copy_ex
+#define HMAC_CTX_free GRPC_SHADOW_HMAC_CTX_free
+#define HMAC_CTX_init GRPC_SHADOW_HMAC_CTX_init
+#define HMAC_CTX_new GRPC_SHADOW_HMAC_CTX_new
+#define HMAC_CTX_reset GRPC_SHADOW_HMAC_CTX_reset
+#define HMAC_Final GRPC_SHADOW_HMAC_Final
+#define HMAC_Init GRPC_SHADOW_HMAC_Init
+#define HMAC_Init_ex GRPC_SHADOW_HMAC_Init_ex
+#define HMAC_size GRPC_SHADOW_HMAC_size
+#define HMAC_Update GRPC_SHADOW_HMAC_Update
+#define HRSS_decap GRPC_SHADOW_HRSS_decap
+#define HRSS_encap GRPC_SHADOW_HRSS_encap
+#define HRSS_generate_key GRPC_SHADOW_HRSS_generate_key
+#define HRSS_marshal_public_key GRPC_SHADOW_HRSS_marshal_public_key
+#define HRSS_parse_public_key GRPC_SHADOW_HRSS_parse_public_key
+#define HRSS_poly3_invert GRPC_SHADOW_HRSS_poly3_invert
+#define HRSS_poly3_mul GRPC_SHADOW_HRSS_poly3_mul
+#define i2a_ACCESS_DESCRIPTION GRPC_SHADOW_i2a_ACCESS_DESCRIPTION
+#define i2a_ASN1_ENUMERATED GRPC_SHADOW_i2a_ASN1_ENUMERATED
+#define i2a_ASN1_INTEGER GRPC_SHADOW_i2a_ASN1_INTEGER
+#define i2a_ASN1_OBJECT GRPC_SHADOW_i2a_ASN1_OBJECT
+#define i2a_ASN1_STRING GRPC_SHADOW_i2a_ASN1_STRING
+#define i2c_ASN1_BIT_STRING GRPC_SHADOW_i2c_ASN1_BIT_STRING
+#define i2c_ASN1_INTEGER GRPC_SHADOW_i2c_ASN1_INTEGER
+#define i2d_ACCESS_DESCRIPTION GRPC_SHADOW_i2d_ACCESS_DESCRIPTION
+#define i2d_ASN1_BIT_STRING GRPC_SHADOW_i2d_ASN1_BIT_STRING
+#define i2d_ASN1_BMPSTRING GRPC_SHADOW_i2d_ASN1_BMPSTRING
+#define i2d_ASN1_BOOLEAN GRPC_SHADOW_i2d_ASN1_BOOLEAN
+#define i2d_ASN1_ENUMERATED GRPC_SHADOW_i2d_ASN1_ENUMERATED
+#define i2d_ASN1_GENERALIZEDTIME GRPC_SHADOW_i2d_ASN1_GENERALIZEDTIME
+#define i2d_ASN1_GENERALSTRING GRPC_SHADOW_i2d_ASN1_GENERALSTRING
+#define i2d_ASN1_IA5STRING GRPC_SHADOW_i2d_ASN1_IA5STRING
+#define i2d_ASN1_INTEGER GRPC_SHADOW_i2d_ASN1_INTEGER
+#define i2d_ASN1_NULL GRPC_SHADOW_i2d_ASN1_NULL
+#define i2d_ASN1_OBJECT GRPC_SHADOW_i2d_ASN1_OBJECT
+#define i2d_ASN1_OCTET_STRING GRPC_SHADOW_i2d_ASN1_OCTET_STRING
+#define i2d_ASN1_PRINTABLE GRPC_SHADOW_i2d_ASN1_PRINTABLE
+#define i2d_ASN1_PRINTABLESTRING GRPC_SHADOW_i2d_ASN1_PRINTABLESTRING
+#define i2d_ASN1_SEQUENCE_ANY GRPC_SHADOW_i2d_ASN1_SEQUENCE_ANY
+#define i2d_ASN1_SET_ANY GRPC_SHADOW_i2d_ASN1_SET_ANY
+#define i2d_ASN1_T61STRING GRPC_SHADOW_i2d_ASN1_T61STRING
+#define i2d_ASN1_TIME GRPC_SHADOW_i2d_ASN1_TIME
+#define i2d_ASN1_TYPE GRPC_SHADOW_i2d_ASN1_TYPE
+#define i2d_ASN1_UNIVERSALSTRING GRPC_SHADOW_i2d_ASN1_UNIVERSALSTRING
+#define i2d_ASN1_UTCTIME GRPC_SHADOW_i2d_ASN1_UTCTIME
+#define i2d_ASN1_UTF8STRING GRPC_SHADOW_i2d_ASN1_UTF8STRING
+#define i2d_ASN1_VISIBLESTRING GRPC_SHADOW_i2d_ASN1_VISIBLESTRING
+#define i2d_AUTHORITY_INFO_ACCESS GRPC_SHADOW_i2d_AUTHORITY_INFO_ACCESS
+#define i2d_AUTHORITY_KEYID GRPC_SHADOW_i2d_AUTHORITY_KEYID
+#define i2d_BASIC_CONSTRAINTS GRPC_SHADOW_i2d_BASIC_CONSTRAINTS
+#define i2d_CERTIFICATEPOLICIES GRPC_SHADOW_i2d_CERTIFICATEPOLICIES
+#define i2d_CRL_DIST_POINTS GRPC_SHADOW_i2d_CRL_DIST_POINTS
+#define i2d_DHparams GRPC_SHADOW_i2d_DHparams
+#define i2d_DHparams_bio GRPC_SHADOW_i2d_DHparams_bio
+#define i2d_DIRECTORYSTRING GRPC_SHADOW_i2d_DIRECTORYSTRING
+#define i2d_DISPLAYTEXT GRPC_SHADOW_i2d_DISPLAYTEXT
+#define i2d_DIST_POINT GRPC_SHADOW_i2d_DIST_POINT
+#define i2d_DIST_POINT_NAME GRPC_SHADOW_i2d_DIST_POINT_NAME
+#define i2d_DSAparams GRPC_SHADOW_i2d_DSAparams
+#define i2d_DSAPrivateKey GRPC_SHADOW_i2d_DSAPrivateKey
+#define i2d_DSAPrivateKey_bio GRPC_SHADOW_i2d_DSAPrivateKey_bio
+#define i2d_DSAPrivateKey_fp GRPC_SHADOW_i2d_DSAPrivateKey_fp
+#define i2d_DSA_PUBKEY GRPC_SHADOW_i2d_DSA_PUBKEY
+#define i2d_DSA_PUBKEY_bio GRPC_SHADOW_i2d_DSA_PUBKEY_bio
+#define i2d_DSA_PUBKEY_fp GRPC_SHADOW_i2d_DSA_PUBKEY_fp
+#define i2d_DSAPublicKey GRPC_SHADOW_i2d_DSAPublicKey
+#define i2d_DSA_SIG GRPC_SHADOW_i2d_DSA_SIG
+#define i2d_ECDSA_SIG GRPC_SHADOW_i2d_ECDSA_SIG
+#define i2d_ECParameters GRPC_SHADOW_i2d_ECParameters
+#define i2d_ECPrivateKey GRPC_SHADOW_i2d_ECPrivateKey
+#define i2d_ECPrivateKey_bio GRPC_SHADOW_i2d_ECPrivateKey_bio
+#define i2d_ECPrivateKey_fp GRPC_SHADOW_i2d_ECPrivateKey_fp
+#define i2d_EC_PUBKEY GRPC_SHADOW_i2d_EC_PUBKEY
+#define i2d_EC_PUBKEY_bio GRPC_SHADOW_i2d_EC_PUBKEY_bio
+#define i2d_EC_PUBKEY_fp GRPC_SHADOW_i2d_EC_PUBKEY_fp
+#define i2d_EDIPARTYNAME GRPC_SHADOW_i2d_EDIPARTYNAME
+#define i2d_EXTENDED_KEY_USAGE GRPC_SHADOW_i2d_EXTENDED_KEY_USAGE
+#define i2d_GENERAL_NAME GRPC_SHADOW_i2d_GENERAL_NAME
+#define i2d_GENERAL_NAMES GRPC_SHADOW_i2d_GENERAL_NAMES
+#define i2d_ISSUING_DIST_POINT GRPC_SHADOW_i2d_ISSUING_DIST_POINT
+#define i2d_NETSCAPE_SPKAC GRPC_SHADOW_i2d_NETSCAPE_SPKAC
+#define i2d_NETSCAPE_SPKI GRPC_SHADOW_i2d_NETSCAPE_SPKI
+#define i2d_NOTICEREF GRPC_SHADOW_i2d_NOTICEREF
+#define i2d_OTHERNAME GRPC_SHADOW_i2d_OTHERNAME
+#define i2d_PKCS12 GRPC_SHADOW_i2d_PKCS12
+#define i2d_PKCS12_bio GRPC_SHADOW_i2d_PKCS12_bio
+#define i2d_PKCS12_fp GRPC_SHADOW_i2d_PKCS12_fp
+#define i2d_PKCS7 GRPC_SHADOW_i2d_PKCS7
+#define i2d_PKCS7_bio GRPC_SHADOW_i2d_PKCS7_bio
+#define i2d_PKCS8_bio GRPC_SHADOW_i2d_PKCS8_bio
+#define i2d_PKCS8_fp GRPC_SHADOW_i2d_PKCS8_fp
+#define i2d_PKCS8PrivateKey_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_bio
+#define i2d_PKCS8PrivateKey_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_fp
+#define i2d_PKCS8PrivateKeyInfo_bio GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_bio
+#define i2d_PKCS8PrivateKeyInfo_fp GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_fp
+#define i2d_PKCS8PrivateKey_nid_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_bio
+#define i2d_PKCS8PrivateKey_nid_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_fp
+#define i2d_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO
+#define i2d_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_bio
+#define i2d_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_fp
+#define i2d_PKEY_USAGE_PERIOD GRPC_SHADOW_i2d_PKEY_USAGE_PERIOD
+#define i2d_POLICYINFO GRPC_SHADOW_i2d_POLICYINFO
+#define i2d_POLICYQUALINFO GRPC_SHADOW_i2d_POLICYQUALINFO
+#define i2d_PrivateKey GRPC_SHADOW_i2d_PrivateKey
+#define i2d_PrivateKey_bio GRPC_SHADOW_i2d_PrivateKey_bio
+#define i2d_PrivateKey_fp GRPC_SHADOW_i2d_PrivateKey_fp
+#define i2d_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_i2d_PROXY_CERT_INFO_EXTENSION
+#define i2d_PROXY_POLICY GRPC_SHADOW_i2d_PROXY_POLICY
+#define i2d_PUBKEY GRPC_SHADOW_i2d_PUBKEY
+#define i2d_PUBKEY_bio GRPC_SHADOW_i2d_PUBKEY_bio
+#define i2d_PUBKEY_fp GRPC_SHADOW_i2d_PUBKEY_fp
+#define i2d_PublicKey GRPC_SHADOW_i2d_PublicKey
+#define i2d_re_X509_CRL_tbs GRPC_SHADOW_i2d_re_X509_CRL_tbs
+#define i2d_re_X509_REQ_tbs GRPC_SHADOW_i2d_re_X509_REQ_tbs
+#define i2d_re_X509_tbs GRPC_SHADOW_i2d_re_X509_tbs
+#define i2d_RSAPrivateKey GRPC_SHADOW_i2d_RSAPrivateKey
+#define i2d_RSAPrivateKey_bio GRPC_SHADOW_i2d_RSAPrivateKey_bio
+#define i2d_RSAPrivateKey_fp GRPC_SHADOW_i2d_RSAPrivateKey_fp
+#define i2d_RSA_PSS_PARAMS GRPC_SHADOW_i2d_RSA_PSS_PARAMS
+#define i2d_RSA_PUBKEY GRPC_SHADOW_i2d_RSA_PUBKEY
+#define i2d_RSA_PUBKEY_bio GRPC_SHADOW_i2d_RSA_PUBKEY_bio
+#define i2d_RSA_PUBKEY_fp GRPC_SHADOW_i2d_RSA_PUBKEY_fp
+#define i2d_RSAPublicKey GRPC_SHADOW_i2d_RSAPublicKey
+#define i2d_RSAPublicKey_bio GRPC_SHADOW_i2d_RSAPublicKey_bio
+#define i2d_RSAPublicKey_fp GRPC_SHADOW_i2d_RSAPublicKey_fp
+#define i2d_SSL_SESSION GRPC_SHADOW_i2d_SSL_SESSION
+#define i2d_SSL_SESSION_bio GRPC_SHADOW_i2d_SSL_SESSION_bio
+#define i2d_SXNET GRPC_SHADOW_i2d_SXNET
+#define i2d_SXNETID GRPC_SHADOW_i2d_SXNETID
+#define i2d_USERNOTICE GRPC_SHADOW_i2d_USERNOTICE
+#define i2d_X509 GRPC_SHADOW_i2d_X509
+#define i2d_X509_ALGOR GRPC_SHADOW_i2d_X509_ALGOR
+#define i2d_X509_ALGORS GRPC_SHADOW_i2d_X509_ALGORS
+#define i2d_X509_ATTRIBUTE GRPC_SHADOW_i2d_X509_ATTRIBUTE
+#define i2d_X509_AUX GRPC_SHADOW_i2d_X509_AUX
+#define i2d_X509_bio GRPC_SHADOW_i2d_X509_bio
+#define i2d_X509_CERT_AUX GRPC_SHADOW_i2d_X509_CERT_AUX
+#define i2d_X509_CINF GRPC_SHADOW_i2d_X509_CINF
+#define i2d_X509_CRL GRPC_SHADOW_i2d_X509_CRL
+#define i2d_X509_CRL_bio GRPC_SHADOW_i2d_X509_CRL_bio
+#define i2d_X509_CRL_fp GRPC_SHADOW_i2d_X509_CRL_fp
+#define i2d_X509_CRL_INFO GRPC_SHADOW_i2d_X509_CRL_INFO
+#define i2d_X509_EXTENSION GRPC_SHADOW_i2d_X509_EXTENSION
+#define i2d_X509_EXTENSIONS GRPC_SHADOW_i2d_X509_EXTENSIONS
+#define i2d_X509_fp GRPC_SHADOW_i2d_X509_fp
+#define i2d_X509_NAME GRPC_SHADOW_i2d_X509_NAME
+#define i2d_X509_NAME_ENTRY GRPC_SHADOW_i2d_X509_NAME_ENTRY
+#define i2d_X509_PUBKEY GRPC_SHADOW_i2d_X509_PUBKEY
+#define i2d_X509_REQ GRPC_SHADOW_i2d_X509_REQ
+#define i2d_X509_REQ_bio GRPC_SHADOW_i2d_X509_REQ_bio
+#define i2d_X509_REQ_fp GRPC_SHADOW_i2d_X509_REQ_fp
+#define i2d_X509_REQ_INFO GRPC_SHADOW_i2d_X509_REQ_INFO
+#define i2d_X509_REVOKED GRPC_SHADOW_i2d_X509_REVOKED
+#define i2d_X509_SIG GRPC_SHADOW_i2d_X509_SIG
+#define i2d_X509_VAL GRPC_SHADOW_i2d_X509_VAL
+#define i2o_ECPublicKey GRPC_SHADOW_i2o_ECPublicKey
+#define i2s_ASN1_ENUMERATED GRPC_SHADOW_i2s_ASN1_ENUMERATED
+#define i2s_ASN1_ENUMERATED_TABLE GRPC_SHADOW_i2s_ASN1_ENUMERATED_TABLE
+#define i2s_ASN1_INTEGER GRPC_SHADOW_i2s_ASN1_INTEGER
+#define i2s_ASN1_OCTET_STRING GRPC_SHADOW_i2s_ASN1_OCTET_STRING
+#define i2t_ASN1_OBJECT GRPC_SHADOW_i2t_ASN1_OBJECT
+#define i2v_ASN1_BIT_STRING GRPC_SHADOW_i2v_ASN1_BIT_STRING
+#define i2v_GENERAL_NAME GRPC_SHADOW_i2v_GENERAL_NAME
+#define i2v_GENERAL_NAMES GRPC_SHADOW_i2v_GENERAL_NAMES
+#define ISSUING_DIST_POINT_free GRPC_SHADOW_ISSUING_DIST_POINT_free
+#define ISSUING_DIST_POINT_it GRPC_SHADOW_ISSUING_DIST_POINT_it
+#define ISSUING_DIST_POINT_new GRPC_SHADOW_ISSUING_DIST_POINT_new
+#define kBoringSSLRSASqrtTwo GRPC_SHADOW_kBoringSSLRSASqrtTwo
+#define kBoringSSLRSASqrtTwoLen GRPC_SHADOW_kBoringSSLRSASqrtTwoLen
+#define kOpenSSLReasonStringData GRPC_SHADOW_kOpenSSLReasonStringData
+#define kOpenSSLReasonValues GRPC_SHADOW_kOpenSSLReasonValues
+#define kOpenSSLReasonValuesLen GRPC_SHADOW_kOpenSSLReasonValuesLen
+#define level_add_node GRPC_SHADOW_level_add_node
+#define level_find_node GRPC_SHADOW_level_find_node
+#define lh_delete GRPC_SHADOW_lh_delete
+#define lh_doall_arg GRPC_SHADOW_lh_doall_arg
+#define lh_free GRPC_SHADOW_lh_free
+#define lh_insert GRPC_SHADOW_lh_insert
+#define lh_new GRPC_SHADOW_lh_new
+#define lh_num_items GRPC_SHADOW_lh_num_items
+#define lh_retrieve GRPC_SHADOW_lh_retrieve
+#define lh_retrieve_key GRPC_SHADOW_lh_retrieve_key
+#define lh_strhash GRPC_SHADOW_lh_strhash
+#define MD4 GRPC_SHADOW_MD4
+#define md4_block_data_order GRPC_SHADOW_md4_block_data_order
+#define MD4_Final GRPC_SHADOW_MD4_Final
+#define MD4_Init GRPC_SHADOW_MD4_Init
+#define MD4_Transform GRPC_SHADOW_MD4_Transform
+#define MD4_Update GRPC_SHADOW_MD4_Update
+#define MD5 GRPC_SHADOW_MD5
+#define md5_block_asm_data_order GRPC_SHADOW_md5_block_asm_data_order
+#define MD5_Final GRPC_SHADOW_MD5_Final
+#define MD5_Init GRPC_SHADOW_MD5_Init
+#define MD5_Transform GRPC_SHADOW_MD5_Transform
+#define MD5_Update GRPC_SHADOW_MD5_Update
+#define METHOD_ref GRPC_SHADOW_METHOD_ref
+#define METHOD_unref GRPC_SHADOW_METHOD_unref
+#define NAME_CONSTRAINTS_check GRPC_SHADOW_NAME_CONSTRAINTS_check
+#define NAME_CONSTRAINTS_free GRPC_SHADOW_NAME_CONSTRAINTS_free
+#define NAME_CONSTRAINTS_it GRPC_SHADOW_NAME_CONSTRAINTS_it
+#define NAME_CONSTRAINTS_new GRPC_SHADOW_NAME_CONSTRAINTS_new
+#define NCONF_free GRPC_SHADOW_NCONF_free
+#define NCONF_get_section GRPC_SHADOW_NCONF_get_section
+#define NCONF_get_string GRPC_SHADOW_NCONF_get_string
+#define NCONF_load GRPC_SHADOW_NCONF_load
+#define NCONF_load_bio GRPC_SHADOW_NCONF_load_bio
+#define NCONF_new GRPC_SHADOW_NCONF_new
+#define NETSCAPE_SPKAC_free GRPC_SHADOW_NETSCAPE_SPKAC_free
+#define NETSCAPE_SPKAC_it GRPC_SHADOW_NETSCAPE_SPKAC_it
+#define NETSCAPE_SPKAC_new GRPC_SHADOW_NETSCAPE_SPKAC_new
+#define NETSCAPE_SPKI_b64_decode GRPC_SHADOW_NETSCAPE_SPKI_b64_decode
+#define NETSCAPE_SPKI_b64_encode GRPC_SHADOW_NETSCAPE_SPKI_b64_encode
+#define NETSCAPE_SPKI_free GRPC_SHADOW_NETSCAPE_SPKI_free
+#define NETSCAPE_SPKI_get_pubkey GRPC_SHADOW_NETSCAPE_SPKI_get_pubkey
+#define NETSCAPE_SPKI_it GRPC_SHADOW_NETSCAPE_SPKI_it
+#define NETSCAPE_SPKI_new GRPC_SHADOW_NETSCAPE_SPKI_new
+#define NETSCAPE_SPKI_set_pubkey GRPC_SHADOW_NETSCAPE_SPKI_set_pubkey
+#define NETSCAPE_SPKI_sign GRPC_SHADOW_NETSCAPE_SPKI_sign
+#define NETSCAPE_SPKI_verify GRPC_SHADOW_NETSCAPE_SPKI_verify
+#define NOTICEREF_free GRPC_SHADOW_NOTICEREF_free
+#define NOTICEREF_it GRPC_SHADOW_NOTICEREF_it
+#define NOTICEREF_new GRPC_SHADOW_NOTICEREF_new
+#define o2i_ECPublicKey GRPC_SHADOW_o2i_ECPublicKey
+#define OBJ_cbs2nid GRPC_SHADOW_OBJ_cbs2nid
+#define OBJ_cleanup GRPC_SHADOW_OBJ_cleanup
+#define OBJ_cmp GRPC_SHADOW_OBJ_cmp
+#define OBJ_create GRPC_SHADOW_OBJ_create
+#define OBJ_dup GRPC_SHADOW_OBJ_dup
+#define OBJ_find_sigid_algs GRPC_SHADOW_OBJ_find_sigid_algs
+#define OBJ_find_sigid_by_algs GRPC_SHADOW_OBJ_find_sigid_by_algs
+#define OBJ_get0_data GRPC_SHADOW_OBJ_get0_data
+#define OBJ_length GRPC_SHADOW_OBJ_length
+#define OBJ_ln2nid GRPC_SHADOW_OBJ_ln2nid
+#define OBJ_nid2cbb GRPC_SHADOW_OBJ_nid2cbb
+#define OBJ_nid2ln GRPC_SHADOW_OBJ_nid2ln
+#define OBJ_nid2obj GRPC_SHADOW_OBJ_nid2obj
+#define OBJ_nid2sn GRPC_SHADOW_OBJ_nid2sn
+#define OBJ_obj2nid GRPC_SHADOW_OBJ_obj2nid
+#define OBJ_obj2txt GRPC_SHADOW_OBJ_obj2txt
+#define OBJ_sn2nid GRPC_SHADOW_OBJ_sn2nid
+#define OBJ_txt2nid GRPC_SHADOW_OBJ_txt2nid
+#define OBJ_txt2obj GRPC_SHADOW_OBJ_txt2obj
+#define OpenSSL_add_all_algorithms GRPC_SHADOW_OpenSSL_add_all_algorithms
+#define OPENSSL_add_all_algorithms_conf GRPC_SHADOW_OPENSSL_add_all_algorithms_conf
+#define OpenSSL_add_all_ciphers GRPC_SHADOW_OpenSSL_add_all_ciphers
+#define OpenSSL_add_all_digests GRPC_SHADOW_OpenSSL_add_all_digests
+#define OPENSSL_built_in_curves GRPC_SHADOW_OPENSSL_built_in_curves
+#define OPENSSL_cleanse GRPC_SHADOW_OPENSSL_cleanse
+#define OPENSSL_cleanup GRPC_SHADOW_OPENSSL_cleanup
+#define OPENSSL_clear_free GRPC_SHADOW_OPENSSL_clear_free
+#define OPENSSL_config GRPC_SHADOW_OPENSSL_config
+#define OPENSSL_cpuid_setup GRPC_SHADOW_OPENSSL_cpuid_setup
+#define OPENSSL_free GRPC_SHADOW_OPENSSL_free
+#define OPENSSL_gmtime GRPC_SHADOW_OPENSSL_gmtime
+#define OPENSSL_gmtime_adj GRPC_SHADOW_OPENSSL_gmtime_adj
+#define OPENSSL_gmtime_diff GRPC_SHADOW_OPENSSL_gmtime_diff
+#define OPENSSL_hash32 GRPC_SHADOW_OPENSSL_hash32
+#define OPENSSL_ia32cap_P GRPC_SHADOW_OPENSSL_ia32cap_P
+#define OPENSSL_init_crypto GRPC_SHADOW_OPENSSL_init_crypto
+#define OPENSSL_init_ssl GRPC_SHADOW_OPENSSL_init_ssl
+#define OPENSSL_load_builtin_modules GRPC_SHADOW_OPENSSL_load_builtin_modules
+#define OPENSSL_malloc GRPC_SHADOW_OPENSSL_malloc
+#define OPENSSL_malloc_init GRPC_SHADOW_OPENSSL_malloc_init
+#define OPENSSL_memdup GRPC_SHADOW_OPENSSL_memdup
+#define OPENSSL_no_config GRPC_SHADOW_OPENSSL_no_config
+#define OPENSSL_realloc GRPC_SHADOW_OPENSSL_realloc
+#define OPENSSL_strcasecmp GRPC_SHADOW_OPENSSL_strcasecmp
+#define OPENSSL_strdup GRPC_SHADOW_OPENSSL_strdup
+#define OPENSSL_strlcat GRPC_SHADOW_OPENSSL_strlcat
+#define OPENSSL_strlcpy GRPC_SHADOW_OPENSSL_strlcpy
+#define OPENSSL_strncasecmp GRPC_SHADOW_OPENSSL_strncasecmp
+#define OPENSSL_strndup GRPC_SHADOW_OPENSSL_strndup
+#define OPENSSL_strnlen GRPC_SHADOW_OPENSSL_strnlen
+#define OPENSSL_tolower GRPC_SHADOW_OPENSSL_tolower
+#define OpenSSL_version GRPC_SHADOW_OpenSSL_version
+#define OpenSSL_version_num GRPC_SHADOW_OpenSSL_version_num
+#define OTHERNAME_cmp GRPC_SHADOW_OTHERNAME_cmp
+#define OTHERNAME_free GRPC_SHADOW_OTHERNAME_free
+#define OTHERNAME_it GRPC_SHADOW_OTHERNAME_it
+#define OTHERNAME_new GRPC_SHADOW_OTHERNAME_new
+#define PEM_ASN1_read GRPC_SHADOW_PEM_ASN1_read
+#define PEM_ASN1_read_bio GRPC_SHADOW_PEM_ASN1_read_bio
+#define PEM_ASN1_write GRPC_SHADOW_PEM_ASN1_write
+#define PEM_ASN1_write_bio GRPC_SHADOW_PEM_ASN1_write_bio
+#define PEM_bytes_read_bio GRPC_SHADOW_PEM_bytes_read_bio
+#define PEM_def_callback GRPC_SHADOW_PEM_def_callback
+#define PEM_dek_info GRPC_SHADOW_PEM_dek_info
+#define PEM_do_header GRPC_SHADOW_PEM_do_header
+#define PEM_get_EVP_CIPHER_INFO GRPC_SHADOW_PEM_get_EVP_CIPHER_INFO
+#define PEM_proc_type GRPC_SHADOW_PEM_proc_type
+#define PEM_read GRPC_SHADOW_PEM_read
+#define PEM_read_bio GRPC_SHADOW_PEM_read_bio
+#define PEM_read_bio_DHparams GRPC_SHADOW_PEM_read_bio_DHparams
+#define PEM_read_bio_DSAparams GRPC_SHADOW_PEM_read_bio_DSAparams
+#define PEM_read_bio_DSAPrivateKey GRPC_SHADOW_PEM_read_bio_DSAPrivateKey
+#define PEM_read_bio_DSA_PUBKEY GRPC_SHADOW_PEM_read_bio_DSA_PUBKEY
+#define PEM_read_bio_ECPrivateKey GRPC_SHADOW_PEM_read_bio_ECPrivateKey
+#define PEM_read_bio_EC_PUBKEY GRPC_SHADOW_PEM_read_bio_EC_PUBKEY
+#define PEM_read_bio_PKCS7 GRPC_SHADOW_PEM_read_bio_PKCS7
+#define PEM_read_bio_PKCS8 GRPC_SHADOW_PEM_read_bio_PKCS8
+#define PEM_read_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_read_bio_PrivateKey GRPC_SHADOW_PEM_read_bio_PrivateKey
+#define PEM_read_bio_PUBKEY GRPC_SHADOW_PEM_read_bio_PUBKEY
+#define PEM_read_bio_RSAPrivateKey GRPC_SHADOW_PEM_read_bio_RSAPrivateKey
+#define PEM_read_bio_RSA_PUBKEY GRPC_SHADOW_PEM_read_bio_RSA_PUBKEY
+#define PEM_read_bio_RSAPublicKey GRPC_SHADOW_PEM_read_bio_RSAPublicKey
+#define PEM_read_bio_SSL_SESSION GRPC_SHADOW_PEM_read_bio_SSL_SESSION
+#define PEM_read_bio_X509 GRPC_SHADOW_PEM_read_bio_X509
+#define PEM_read_bio_X509_AUX GRPC_SHADOW_PEM_read_bio_X509_AUX
+#define PEM_read_bio_X509_CRL GRPC_SHADOW_PEM_read_bio_X509_CRL
+#define PEM_read_bio_X509_REQ GRPC_SHADOW_PEM_read_bio_X509_REQ
+#define PEM_read_DHparams GRPC_SHADOW_PEM_read_DHparams
+#define PEM_read_DSAparams GRPC_SHADOW_PEM_read_DSAparams
+#define PEM_read_DSAPrivateKey GRPC_SHADOW_PEM_read_DSAPrivateKey
+#define PEM_read_DSA_PUBKEY GRPC_SHADOW_PEM_read_DSA_PUBKEY
+#define PEM_read_ECPrivateKey GRPC_SHADOW_PEM_read_ECPrivateKey
+#define PEM_read_EC_PUBKEY GRPC_SHADOW_PEM_read_EC_PUBKEY
+#define PEM_read_PKCS7 GRPC_SHADOW_PEM_read_PKCS7
+#define PEM_read_PKCS8 GRPC_SHADOW_PEM_read_PKCS8
+#define PEM_read_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_PKCS8_PRIV_KEY_INFO
+#define PEM_read_PrivateKey GRPC_SHADOW_PEM_read_PrivateKey
+#define PEM_read_PUBKEY GRPC_SHADOW_PEM_read_PUBKEY
+#define PEM_read_RSAPrivateKey GRPC_SHADOW_PEM_read_RSAPrivateKey
+#define PEM_read_RSA_PUBKEY GRPC_SHADOW_PEM_read_RSA_PUBKEY
+#define PEM_read_RSAPublicKey GRPC_SHADOW_PEM_read_RSAPublicKey
+#define PEM_read_SSL_SESSION GRPC_SHADOW_PEM_read_SSL_SESSION
+#define PEM_read_X509 GRPC_SHADOW_PEM_read_X509
+#define PEM_read_X509_AUX GRPC_SHADOW_PEM_read_X509_AUX
+#define PEM_read_X509_CRL GRPC_SHADOW_PEM_read_X509_CRL
+#define PEM_read_X509_REQ GRPC_SHADOW_PEM_read_X509_REQ
+#define PEM_write GRPC_SHADOW_PEM_write
+#define PEM_write_bio GRPC_SHADOW_PEM_write_bio
+#define PEM_write_bio_DHparams GRPC_SHADOW_PEM_write_bio_DHparams
+#define PEM_write_bio_DSAparams GRPC_SHADOW_PEM_write_bio_DSAparams
+#define PEM_write_bio_DSAPrivateKey GRPC_SHADOW_PEM_write_bio_DSAPrivateKey
+#define PEM_write_bio_DSA_PUBKEY GRPC_SHADOW_PEM_write_bio_DSA_PUBKEY
+#define PEM_write_bio_ECPrivateKey GRPC_SHADOW_PEM_write_bio_ECPrivateKey
+#define PEM_write_bio_EC_PUBKEY GRPC_SHADOW_PEM_write_bio_EC_PUBKEY
+#define PEM_write_bio_PKCS7 GRPC_SHADOW_PEM_write_bio_PKCS7
+#define PEM_write_bio_PKCS8 GRPC_SHADOW_PEM_write_bio_PKCS8
+#define PEM_write_bio_PKCS8PrivateKey GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey
+#define PEM_write_bio_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey_nid
+#define PEM_write_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_write_bio_PrivateKey GRPC_SHADOW_PEM_write_bio_PrivateKey
+#define PEM_write_bio_PUBKEY GRPC_SHADOW_PEM_write_bio_PUBKEY
+#define PEM_write_bio_RSAPrivateKey GRPC_SHADOW_PEM_write_bio_RSAPrivateKey
+#define PEM_write_bio_RSA_PUBKEY GRPC_SHADOW_PEM_write_bio_RSA_PUBKEY
+#define PEM_write_bio_RSAPublicKey GRPC_SHADOW_PEM_write_bio_RSAPublicKey
+#define PEM_write_bio_SSL_SESSION GRPC_SHADOW_PEM_write_bio_SSL_SESSION
+#define PEM_write_bio_X509 GRPC_SHADOW_PEM_write_bio_X509
+#define PEM_write_bio_X509_AUX GRPC_SHADOW_PEM_write_bio_X509_AUX
+#define PEM_write_bio_X509_CRL GRPC_SHADOW_PEM_write_bio_X509_CRL
+#define PEM_write_bio_X509_REQ GRPC_SHADOW_PEM_write_bio_X509_REQ
+#define PEM_write_bio_X509_REQ_NEW GRPC_SHADOW_PEM_write_bio_X509_REQ_NEW
+#define PEM_write_DHparams GRPC_SHADOW_PEM_write_DHparams
+#define PEM_write_DSAparams GRPC_SHADOW_PEM_write_DSAparams
+#define PEM_write_DSAPrivateKey GRPC_SHADOW_PEM_write_DSAPrivateKey
+#define PEM_write_DSA_PUBKEY GRPC_SHADOW_PEM_write_DSA_PUBKEY
+#define PEM_write_ECPrivateKey GRPC_SHADOW_PEM_write_ECPrivateKey
+#define PEM_write_EC_PUBKEY GRPC_SHADOW_PEM_write_EC_PUBKEY
+#define PEM_write_PKCS7 GRPC_SHADOW_PEM_write_PKCS7
+#define PEM_write_PKCS8 GRPC_SHADOW_PEM_write_PKCS8
+#define PEM_write_PKCS8PrivateKey GRPC_SHADOW_PEM_write_PKCS8PrivateKey
+#define PEM_write_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_PKCS8PrivateKey_nid
+#define PEM_write_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_PKCS8_PRIV_KEY_INFO
+#define PEM_write_PrivateKey GRPC_SHADOW_PEM_write_PrivateKey
+#define PEM_write_PUBKEY GRPC_SHADOW_PEM_write_PUBKEY
+#define PEM_write_RSAPrivateKey GRPC_SHADOW_PEM_write_RSAPrivateKey
+#define PEM_write_RSA_PUBKEY GRPC_SHADOW_PEM_write_RSA_PUBKEY
+#define PEM_write_RSAPublicKey GRPC_SHADOW_PEM_write_RSAPublicKey
+#define PEM_write_SSL_SESSION GRPC_SHADOW_PEM_write_SSL_SESSION
+#define PEM_write_X509 GRPC_SHADOW_PEM_write_X509
+#define PEM_write_X509_AUX GRPC_SHADOW_PEM_write_X509_AUX
+#define PEM_write_X509_CRL GRPC_SHADOW_PEM_write_X509_CRL
+#define PEM_write_X509_REQ GRPC_SHADOW_PEM_write_X509_REQ
+#define PEM_write_X509_REQ_NEW GRPC_SHADOW_PEM_write_X509_REQ_NEW
+#define PEM_X509_INFO_read GRPC_SHADOW_PEM_X509_INFO_read
+#define PEM_X509_INFO_read_bio GRPC_SHADOW_PEM_X509_INFO_read_bio
+#define PEM_X509_INFO_write_bio GRPC_SHADOW_PEM_X509_INFO_write_bio
+#define PKCS12_create GRPC_SHADOW_PKCS12_create
+#define PKCS12_free GRPC_SHADOW_PKCS12_free
+#define PKCS12_get_key_and_certs GRPC_SHADOW_PKCS12_get_key_and_certs
+#define pkcs12_iterations_acceptable GRPC_SHADOW_pkcs12_iterations_acceptable
+#define pkcs12_key_gen GRPC_SHADOW_pkcs12_key_gen
+#define PKCS12_parse GRPC_SHADOW_PKCS12_parse
+#define PKCS12_PBE_add GRPC_SHADOW_PKCS12_PBE_add
+#define pkcs12_pbe_encrypt_init GRPC_SHADOW_pkcs12_pbe_encrypt_init
+#define PKCS12_verify_mac GRPC_SHADOW_PKCS12_verify_mac
+#define PKCS5_pbe2_decrypt_init GRPC_SHADOW_PKCS5_pbe2_decrypt_init
+#define PKCS5_pbe2_encrypt_init GRPC_SHADOW_PKCS5_pbe2_encrypt_init
+#define PKCS5_PBKDF2_HMAC GRPC_SHADOW_PKCS5_PBKDF2_HMAC
+#define PKCS5_PBKDF2_HMAC_SHA1 GRPC_SHADOW_PKCS5_PBKDF2_HMAC_SHA1
+#define pkcs7_bundle GRPC_SHADOW_pkcs7_bundle
+#define PKCS7_bundle_certificates GRPC_SHADOW_PKCS7_bundle_certificates
+#define PKCS7_bundle_CRLs GRPC_SHADOW_PKCS7_bundle_CRLs
+#define PKCS7_free GRPC_SHADOW_PKCS7_free
+#define PKCS7_get_certificates GRPC_SHADOW_PKCS7_get_certificates
+#define PKCS7_get_CRLs GRPC_SHADOW_PKCS7_get_CRLs
+#define PKCS7_get_PEM_certificates GRPC_SHADOW_PKCS7_get_PEM_certificates
+#define PKCS7_get_PEM_CRLs GRPC_SHADOW_PKCS7_get_PEM_CRLs
+#define PKCS7_get_raw_certificates GRPC_SHADOW_PKCS7_get_raw_certificates
+#define pkcs7_parse_header GRPC_SHADOW_pkcs7_parse_header
+#define PKCS7_sign GRPC_SHADOW_PKCS7_sign
+#define PKCS7_type_is_data GRPC_SHADOW_PKCS7_type_is_data
+#define PKCS7_type_is_digest GRPC_SHADOW_PKCS7_type_is_digest
+#define PKCS7_type_is_encrypted GRPC_SHADOW_PKCS7_type_is_encrypted
+#define PKCS7_type_is_enveloped GRPC_SHADOW_PKCS7_type_is_enveloped
+#define PKCS7_type_is_signed GRPC_SHADOW_PKCS7_type_is_signed
+#define PKCS7_type_is_signedAndEnveloped GRPC_SHADOW_PKCS7_type_is_signedAndEnveloped
+#define PKCS8_decrypt GRPC_SHADOW_PKCS8_decrypt
+#define PKCS8_encrypt GRPC_SHADOW_PKCS8_encrypt
+#define PKCS8_marshal_encrypted_private_key GRPC_SHADOW_PKCS8_marshal_encrypted_private_key
+#define PKCS8_parse_encrypted_private_key GRPC_SHADOW_PKCS8_parse_encrypted_private_key
+#define pkcs8_pbe_decrypt GRPC_SHADOW_pkcs8_pbe_decrypt
+#define PKCS8_pkey_get0 GRPC_SHADOW_PKCS8_pkey_get0
+#define PKCS8_pkey_set0 GRPC_SHADOW_PKCS8_pkey_set0
+#define PKCS8_PRIV_KEY_INFO_free GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_free
+#define PKCS8_PRIV_KEY_INFO_it GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_it
+#define PKCS8_PRIV_KEY_INFO_new GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_new
+#define PKEY_USAGE_PERIOD_free GRPC_SHADOW_PKEY_USAGE_PERIOD_free
+#define PKEY_USAGE_PERIOD_it GRPC_SHADOW_PKEY_USAGE_PERIOD_it
+#define PKEY_USAGE_PERIOD_new GRPC_SHADOW_PKEY_USAGE_PERIOD_new
+#define policy_cache_find_data GRPC_SHADOW_policy_cache_find_data
+#define policy_cache_free GRPC_SHADOW_policy_cache_free
+#define policy_cache_set GRPC_SHADOW_policy_cache_set
+#define policy_cache_set_mapping GRPC_SHADOW_policy_cache_set_mapping
+#define POLICY_CONSTRAINTS_free GRPC_SHADOW_POLICY_CONSTRAINTS_free
+#define POLICY_CONSTRAINTS_it GRPC_SHADOW_POLICY_CONSTRAINTS_it
+#define POLICY_CONSTRAINTS_new GRPC_SHADOW_POLICY_CONSTRAINTS_new
+#define policy_data_free GRPC_SHADOW_policy_data_free
+#define policy_data_new GRPC_SHADOW_policy_data_new
+#define POLICYINFO_free GRPC_SHADOW_POLICYINFO_free
+#define POLICYINFO_it GRPC_SHADOW_POLICYINFO_it
+#define POLICYINFO_new GRPC_SHADOW_POLICYINFO_new
+#define POLICY_MAPPING_free GRPC_SHADOW_POLICY_MAPPING_free
+#define POLICY_MAPPING_it GRPC_SHADOW_POLICY_MAPPING_it
+#define POLICY_MAPPING_new GRPC_SHADOW_POLICY_MAPPING_new
+#define POLICY_MAPPINGS_it GRPC_SHADOW_POLICY_MAPPINGS_it
+#define policy_node_cmp_new GRPC_SHADOW_policy_node_cmp_new
+#define policy_node_free GRPC_SHADOW_policy_node_free
+#define policy_node_match GRPC_SHADOW_policy_node_match
+#define POLICYQUALINFO_free GRPC_SHADOW_POLICYQUALINFO_free
+#define POLICYQUALINFO_it GRPC_SHADOW_POLICYQUALINFO_it
+#define POLICYQUALINFO_new GRPC_SHADOW_POLICYQUALINFO_new
+#define poly_Rq_mul GRPC_SHADOW_poly_Rq_mul
+#define PROXY_CERT_INFO_EXTENSION_free GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_free
+#define PROXY_CERT_INFO_EXTENSION_it GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_it
+#define PROXY_CERT_INFO_EXTENSION_new GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_new
+#define PROXY_POLICY_free GRPC_SHADOW_PROXY_POLICY_free
+#define PROXY_POLICY_it GRPC_SHADOW_PROXY_POLICY_it
+#define PROXY_POLICY_new GRPC_SHADOW_PROXY_POLICY_new
+#define RAND_add GRPC_SHADOW_RAND_add
+#define RAND_bytes GRPC_SHADOW_RAND_bytes
+#define RAND_bytes_with_additional_data GRPC_SHADOW_RAND_bytes_with_additional_data
+#define RAND_cleanup GRPC_SHADOW_RAND_cleanup
+#define RAND_egd GRPC_SHADOW_RAND_egd
+#define RAND_enable_fork_unsafe_buffering GRPC_SHADOW_RAND_enable_fork_unsafe_buffering
+#define RAND_file_name GRPC_SHADOW_RAND_file_name
+#define rand_fork_unsafe_buffering_enabled GRPC_SHADOW_rand_fork_unsafe_buffering_enabled
+#define RAND_get_rand_method GRPC_SHADOW_RAND_get_rand_method
+#define RAND_load_file GRPC_SHADOW_RAND_load_file
+#define RAND_poll GRPC_SHADOW_RAND_poll
+#define RAND_pseudo_bytes GRPC_SHADOW_RAND_pseudo_bytes
+#define RAND_seed GRPC_SHADOW_RAND_seed
+#define RAND_set_rand_method GRPC_SHADOW_RAND_set_rand_method
+#define RAND_set_urandom_fd GRPC_SHADOW_RAND_set_urandom_fd
+#define RAND_SSLeay GRPC_SHADOW_RAND_SSLeay
+#define RAND_status GRPC_SHADOW_RAND_status
+#define RC4 GRPC_SHADOW_RC4
+#define RC4_set_key GRPC_SHADOW_RC4_set_key
+#define RSA_add_pkcs1_prefix GRPC_SHADOW_RSA_add_pkcs1_prefix
+#define rsa_asn1_meth GRPC_SHADOW_rsa_asn1_meth
+#define RSA_bits GRPC_SHADOW_RSA_bits
+#define RSA_blinding_on GRPC_SHADOW_RSA_blinding_on
+#define RSA_check_fips GRPC_SHADOW_RSA_check_fips
+#define RSA_check_key GRPC_SHADOW_RSA_check_key
+#define RSA_decrypt GRPC_SHADOW_RSA_decrypt
+#define rsa_default_decrypt GRPC_SHADOW_rsa_default_decrypt
+#define RSA_default_method GRPC_SHADOW_RSA_default_method
+#define rsa_default_private_transform GRPC_SHADOW_rsa_default_private_transform
+#define rsa_default_sign_raw GRPC_SHADOW_rsa_default_sign_raw
+#define rsa_default_size GRPC_SHADOW_rsa_default_size
+#define RSA_encrypt GRPC_SHADOW_RSA_encrypt
+#define RSA_flags GRPC_SHADOW_RSA_flags
+#define RSA_free GRPC_SHADOW_RSA_free
+#define RSA_generate_key_ex GRPC_SHADOW_RSA_generate_key_ex
+#define RSA_generate_key_fips GRPC_SHADOW_RSA_generate_key_fips
+#define RSA_get0_crt_params GRPC_SHADOW_RSA_get0_crt_params
+#define RSA_get0_factors GRPC_SHADOW_RSA_get0_factors
+#define RSA_get0_key GRPC_SHADOW_RSA_get0_key
+#define RSA_get_ex_data GRPC_SHADOW_RSA_get_ex_data
+#define RSA_get_ex_new_index GRPC_SHADOW_RSA_get_ex_new_index
+#define RSA_is_opaque GRPC_SHADOW_RSA_is_opaque
+#define RSA_marshal_private_key GRPC_SHADOW_RSA_marshal_private_key
+#define RSA_marshal_public_key GRPC_SHADOW_RSA_marshal_public_key
+#define RSA_new GRPC_SHADOW_RSA_new
+#define RSA_new_method GRPC_SHADOW_RSA_new_method
+#define RSA_padding_add_none GRPC_SHADOW_RSA_padding_add_none
+#define RSA_padding_add_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_OAEP_mgf1
+#define RSA_padding_add_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_PSS_mgf1
+#define RSA_padding_add_PKCS1_type_1 GRPC_SHADOW_RSA_padding_add_PKCS1_type_1
+#define RSA_padding_add_PKCS1_type_2 GRPC_SHADOW_RSA_padding_add_PKCS1_type_2
+#define RSA_padding_check_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_check_PKCS1_OAEP_mgf1
+#define RSA_padding_check_PKCS1_type_1 GRPC_SHADOW_RSA_padding_check_PKCS1_type_1
+#define RSA_padding_check_PKCS1_type_2 GRPC_SHADOW_RSA_padding_check_PKCS1_type_2
+#define RSA_parse_private_key GRPC_SHADOW_RSA_parse_private_key
+#define RSA_parse_public_key GRPC_SHADOW_RSA_parse_public_key
+#define rsa_pkey_meth GRPC_SHADOW_rsa_pkey_meth
+#define RSA_print GRPC_SHADOW_RSA_print
+#define RSA_private_decrypt GRPC_SHADOW_RSA_private_decrypt
+#define RSA_private_encrypt GRPC_SHADOW_RSA_private_encrypt
+#define RSAPrivateKey_dup GRPC_SHADOW_RSAPrivateKey_dup
+#define RSA_private_key_from_bytes GRPC_SHADOW_RSA_private_key_from_bytes
+#define RSA_private_key_to_bytes GRPC_SHADOW_RSA_private_key_to_bytes
+#define RSA_private_transform GRPC_SHADOW_RSA_private_transform
+#define RSA_PSS_PARAMS_free GRPC_SHADOW_RSA_PSS_PARAMS_free
+#define RSA_PSS_PARAMS_it GRPC_SHADOW_RSA_PSS_PARAMS_it
+#define RSA_PSS_PARAMS_new GRPC_SHADOW_RSA_PSS_PARAMS_new
+#define RSA_public_decrypt GRPC_SHADOW_RSA_public_decrypt
+#define RSA_public_encrypt GRPC_SHADOW_RSA_public_encrypt
+#define RSAPublicKey_dup GRPC_SHADOW_RSAPublicKey_dup
+#define RSA_public_key_from_bytes GRPC_SHADOW_RSA_public_key_from_bytes
+#define RSA_public_key_to_bytes GRPC_SHADOW_RSA_public_key_to_bytes
+#define RSA_set0_crt_params GRPC_SHADOW_RSA_set0_crt_params
+#define RSA_set0_factors GRPC_SHADOW_RSA_set0_factors
+#define RSA_set0_key GRPC_SHADOW_RSA_set0_key
+#define RSA_set_ex_data GRPC_SHADOW_RSA_set_ex_data
+#define RSA_sign GRPC_SHADOW_RSA_sign
+#define RSA_sign_pss_mgf1 GRPC_SHADOW_RSA_sign_pss_mgf1
+#define RSA_sign_raw GRPC_SHADOW_RSA_sign_raw
+#define RSA_size GRPC_SHADOW_RSA_size
+#define RSA_up_ref GRPC_SHADOW_RSA_up_ref
+#define RSA_verify GRPC_SHADOW_RSA_verify
+#define RSA_verify_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_verify_PKCS1_PSS_mgf1
+#define RSA_verify_pss_mgf1 GRPC_SHADOW_RSA_verify_pss_mgf1
+#define RSA_verify_raw GRPC_SHADOW_RSA_verify_raw
+#define rsaz_1024_gather5_avx2 GRPC_SHADOW_rsaz_1024_gather5_avx2
+#define RSAZ_1024_mod_exp_avx2 GRPC_SHADOW_RSAZ_1024_mod_exp_avx2
+#define rsaz_1024_mul_avx2 GRPC_SHADOW_rsaz_1024_mul_avx2
+#define rsaz_1024_norm2red_avx2 GRPC_SHADOW_rsaz_1024_norm2red_avx2
+#define rsaz_1024_red2norm_avx2 GRPC_SHADOW_rsaz_1024_red2norm_avx2
+#define rsaz_1024_scatter5_avx2 GRPC_SHADOW_rsaz_1024_scatter5_avx2
+#define rsaz_1024_sqr_avx2 GRPC_SHADOW_rsaz_1024_sqr_avx2
+#define s2i_ASN1_INTEGER GRPC_SHADOW_s2i_ASN1_INTEGER
+#define s2i_ASN1_OCTET_STRING GRPC_SHADOW_s2i_ASN1_OCTET_STRING
+#define sdallocx GRPC_SHADOW_sdallocx
+#define SHA1 GRPC_SHADOW_SHA1
+#define sha1_block_data_order GRPC_SHADOW_sha1_block_data_order
+#define SHA1_Final GRPC_SHADOW_SHA1_Final
+#define SHA1_Init GRPC_SHADOW_SHA1_Init
+#define SHA1_Transform GRPC_SHADOW_SHA1_Transform
+#define SHA1_Update GRPC_SHADOW_SHA1_Update
+#define SHA224 GRPC_SHADOW_SHA224
+#define SHA224_Final GRPC_SHADOW_SHA224_Final
+#define SHA224_Init GRPC_SHADOW_SHA224_Init
+#define SHA224_Update GRPC_SHADOW_SHA224_Update
+#define SHA256 GRPC_SHADOW_SHA256
+#define sha256_block_data_order GRPC_SHADOW_sha256_block_data_order
+#define SHA256_Final GRPC_SHADOW_SHA256_Final
+#define SHA256_Init GRPC_SHADOW_SHA256_Init
+#define SHA256_Transform GRPC_SHADOW_SHA256_Transform
+#define SHA256_TransformBlocks GRPC_SHADOW_SHA256_TransformBlocks
+#define SHA256_Update GRPC_SHADOW_SHA256_Update
+#define SHA384 GRPC_SHADOW_SHA384
+#define SHA384_Final GRPC_SHADOW_SHA384_Final
+#define SHA384_Init GRPC_SHADOW_SHA384_Init
+#define SHA384_Update GRPC_SHADOW_SHA384_Update
+#define SHA512 GRPC_SHADOW_SHA512
+#define sha512_block_data_order GRPC_SHADOW_sha512_block_data_order
+#define SHA512_Final GRPC_SHADOW_SHA512_Final
+#define SHA512_Init GRPC_SHADOW_SHA512_Init
+#define SHA512_Transform GRPC_SHADOW_SHA512_Transform
+#define SHA512_Update GRPC_SHADOW_SHA512_Update
+#define SIPHASH_24 GRPC_SHADOW_SIPHASH_24
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_push GRPC_SHADOW_sk_CRYPTO_BUFFER_push
+#define sk_CRYPTO_BUFFER_set GRPC_SHADOW_sk_CRYPTO_BUFFER_set
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_deep_copy GRPC_SHADOW_sk_deep_copy
+#define sk_delete GRPC_SHADOW_sk_delete
+#define sk_delete_ptr GRPC_SHADOW_sk_delete_ptr
+#define sk_dup GRPC_SHADOW_sk_dup
+#define sk_find GRPC_SHADOW_sk_find
+#define sk_free GRPC_SHADOW_sk_free
+#define sk_insert GRPC_SHADOW_sk_insert
+#define sk_is_sorted GRPC_SHADOW_sk_is_sorted
+#define sk_new GRPC_SHADOW_sk_new
+#define sk_new_null GRPC_SHADOW_sk_new_null
+#define sk_num GRPC_SHADOW_sk_num
+#define sk_pop GRPC_SHADOW_sk_pop
+#define sk_pop_free GRPC_SHADOW_sk_pop_free
+#define sk_pop_free_ex GRPC_SHADOW_sk_pop_free_ex
+#define sk_push GRPC_SHADOW_sk_push
+#define sk_set GRPC_SHADOW_sk_set
+#define sk_set_cmp_func GRPC_SHADOW_sk_set_cmp_func
+#define sk_shift GRPC_SHADOW_sk_shift
+#define sk_sort GRPC_SHADOW_sk_sort
+#define sk_SRTP_PROTECTION_PROFILE_new_null GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_new_null
+#define sk_SRTP_PROTECTION_PROFILE_num GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_num
+#define sk_SRTP_PROTECTION_PROFILE_push GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_push
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_delete GRPC_SHADOW_sk_SSL_CIPHER_delete
+#define sk_SSL_CIPHER_dup GRPC_SHADOW_sk_SSL_CIPHER_dup
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_value GRPC_SHADOW_sk_value
+#define sk_X509_call_free_func GRPC_SHADOW_sk_X509_call_free_func
+#define sk_X509_NAME_call_cmp_func GRPC_SHADOW_sk_X509_NAME_call_cmp_func
+#define sk_X509_NAME_call_copy_func GRPC_SHADOW_sk_X509_NAME_call_copy_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_deep_copy GRPC_SHADOW_sk_X509_NAME_deep_copy
+#define sk_X509_NAME_find GRPC_SHADOW_sk_X509_NAME_find
+#define sk_X509_NAME_free GRPC_SHADOW_sk_X509_NAME_free
+#define sk_X509_NAME_new GRPC_SHADOW_sk_X509_NAME_new
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_push GRPC_SHADOW_sk_X509_NAME_push
+#define sk_X509_NAME_set_cmp_func GRPC_SHADOW_sk_X509_NAME_set_cmp_func
+#define sk_X509_NAME_sort GRPC_SHADOW_sk_X509_NAME_sort
+#define sk_X509_new_null GRPC_SHADOW_sk_X509_new_null
+#define sk_X509_num GRPC_SHADOW_sk_X509_num
+#define sk_X509_pop_free GRPC_SHADOW_sk_X509_pop_free
+#define sk_X509_shift GRPC_SHADOW_sk_X509_shift
+#define sk_X509_value GRPC_SHADOW_sk_X509_value
+#define sk_zero GRPC_SHADOW_sk_zero
+#define SPAKE2_CTX_free GRPC_SHADOW_SPAKE2_CTX_free
+#define SPAKE2_CTX_new GRPC_SHADOW_SPAKE2_CTX_new
+#define SPAKE2_generate_msg GRPC_SHADOW_SPAKE2_generate_msg
+#define SPAKE2_process_msg GRPC_SHADOW_SPAKE2_process_msg
+#define SSL_accept GRPC_SHADOW_SSL_accept
+#define SSL_add0_chain_cert GRPC_SHADOW_SSL_add0_chain_cert
+#define SSL_add1_chain_cert GRPC_SHADOW_SSL_add1_chain_cert
+#define SSL_add_client_CA GRPC_SHADOW_SSL_add_client_CA
+#define SSL_add_file_cert_subjects_to_stack GRPC_SHADOW_SSL_add_file_cert_subjects_to_stack
+#define SSL_alert_desc_string GRPC_SHADOW_SSL_alert_desc_string
+#define SSL_alert_desc_string_long GRPC_SHADOW_SSL_alert_desc_string_long
+#define SSL_alert_from_verify_result GRPC_SHADOW_SSL_alert_from_verify_result
+#define SSL_alert_type_string GRPC_SHADOW_SSL_alert_type_string
+#define SSL_alert_type_string_long GRPC_SHADOW_SSL_alert_type_string_long
+#define SSL_cache_hit GRPC_SHADOW_SSL_cache_hit
+#define SSL_certs_clear GRPC_SHADOW_SSL_certs_clear
+#define SSL_check_private_key GRPC_SHADOW_SSL_check_private_key
+#define SSL_CIPHER_description GRPC_SHADOW_SSL_CIPHER_description
+#define SSL_CIPHER_get_auth_nid GRPC_SHADOW_SSL_CIPHER_get_auth_nid
+#define SSL_CIPHER_get_bits GRPC_SHADOW_SSL_CIPHER_get_bits
+#define SSL_CIPHER_get_cipher_nid GRPC_SHADOW_SSL_CIPHER_get_cipher_nid
+#define SSL_CIPHER_get_digest_nid GRPC_SHADOW_SSL_CIPHER_get_digest_nid
+#define SSL_CIPHER_get_id GRPC_SHADOW_SSL_CIPHER_get_id
+#define SSL_CIPHER_get_kx_name GRPC_SHADOW_SSL_CIPHER_get_kx_name
+#define SSL_CIPHER_get_kx_nid GRPC_SHADOW_SSL_CIPHER_get_kx_nid
+#define SSL_CIPHER_get_max_version GRPC_SHADOW_SSL_CIPHER_get_max_version
+#define SSL_CIPHER_get_min_version GRPC_SHADOW_SSL_CIPHER_get_min_version
+#define SSL_CIPHER_get_name GRPC_SHADOW_SSL_CIPHER_get_name
+#define SSL_CIPHER_get_prf_nid GRPC_SHADOW_SSL_CIPHER_get_prf_nid
+#define SSL_CIPHER_get_rfc_name GRPC_SHADOW_SSL_CIPHER_get_rfc_name
+#define SSL_CIPHER_get_value GRPC_SHADOW_SSL_CIPHER_get_value
+#define SSL_CIPHER_get_version GRPC_SHADOW_SSL_CIPHER_get_version
+#define SSL_CIPHER_is_aead GRPC_SHADOW_SSL_CIPHER_is_aead
+#define SSL_CIPHER_is_block_cipher GRPC_SHADOW_SSL_CIPHER_is_block_cipher
+#define SSL_CIPHER_standard_name GRPC_SHADOW_SSL_CIPHER_standard_name
+#define SSL_clear GRPC_SHADOW_SSL_clear
+#define SSL_clear_chain_certs GRPC_SHADOW_SSL_clear_chain_certs
+#define SSL_clear_mode GRPC_SHADOW_SSL_clear_mode
+#define SSL_clear_options GRPC_SHADOW_SSL_clear_options
+#define SSL_COMP_add_compression_method GRPC_SHADOW_SSL_COMP_add_compression_method
+#define SSL_COMP_free_compression_methods GRPC_SHADOW_SSL_COMP_free_compression_methods
+#define SSL_COMP_get0_name GRPC_SHADOW_SSL_COMP_get0_name
+#define SSL_COMP_get_compression_methods GRPC_SHADOW_SSL_COMP_get_compression_methods
+#define SSL_COMP_get_id GRPC_SHADOW_SSL_COMP_get_id
+#define SSL_COMP_get_name GRPC_SHADOW_SSL_COMP_get_name
+#define SSL_connect GRPC_SHADOW_SSL_connect
+#define SSL_CTX_add0_chain_cert GRPC_SHADOW_SSL_CTX_add0_chain_cert
+#define SSL_CTX_add1_chain_cert GRPC_SHADOW_SSL_CTX_add1_chain_cert
+#define SSL_CTX_add_cert_compression_alg GRPC_SHADOW_SSL_CTX_add_cert_compression_alg
+#define SSL_CTX_add_client_CA GRPC_SHADOW_SSL_CTX_add_client_CA
+#define SSL_CTX_add_extra_chain_cert GRPC_SHADOW_SSL_CTX_add_extra_chain_cert
+#define SSL_CTX_add_session GRPC_SHADOW_SSL_CTX_add_session
+#define SSL_CTX_check_private_key GRPC_SHADOW_SSL_CTX_check_private_key
+#define SSL_CTX_cipher_in_group GRPC_SHADOW_SSL_CTX_cipher_in_group
+#define SSL_CTX_clear_chain_certs GRPC_SHADOW_SSL_CTX_clear_chain_certs
+#define SSL_CTX_clear_extra_chain_certs GRPC_SHADOW_SSL_CTX_clear_extra_chain_certs
+#define SSL_CTX_clear_mode GRPC_SHADOW_SSL_CTX_clear_mode
+#define SSL_CTX_clear_options GRPC_SHADOW_SSL_CTX_clear_options
+#define SSL_CTX_enable_ocsp_stapling GRPC_SHADOW_SSL_CTX_enable_ocsp_stapling
+#define SSL_CTX_enable_signed_cert_timestamps GRPC_SHADOW_SSL_CTX_enable_signed_cert_timestamps
+#define SSL_CTX_enable_tls_channel_id GRPC_SHADOW_SSL_CTX_enable_tls_channel_id
+#define SSL_CTX_flush_sessions GRPC_SHADOW_SSL_CTX_flush_sessions
+#define SSL_CTX_free GRPC_SHADOW_SSL_CTX_free
+#define SSL_CTX_get0_certificate GRPC_SHADOW_SSL_CTX_get0_certificate
+#define SSL_CTX_get0_chain_certs GRPC_SHADOW_SSL_CTX_get0_chain_certs
+#define SSL_CTX_get0_param GRPC_SHADOW_SSL_CTX_get0_param
+#define SSL_CTX_get0_privatekey GRPC_SHADOW_SSL_CTX_get0_privatekey
+#define SSL_CTX_get_cert_store GRPC_SHADOW_SSL_CTX_get_cert_store
+#define SSL_CTX_get_channel_id_cb GRPC_SHADOW_SSL_CTX_get_channel_id_cb
+#define SSL_CTX_get_ciphers GRPC_SHADOW_SSL_CTX_get_ciphers
+#define SSL_CTX_get_client_CA_list GRPC_SHADOW_SSL_CTX_get_client_CA_list
+#define SSL_CTX_get_default_passwd_cb GRPC_SHADOW_SSL_CTX_get_default_passwd_cb
+#define SSL_CTX_get_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_get_default_passwd_cb_userdata
+#define SSL_CTX_get_ex_data GRPC_SHADOW_SSL_CTX_get_ex_data
+#define SSL_CTX_get_ex_new_index GRPC_SHADOW_SSL_CTX_get_ex_new_index
+#define SSL_CTX_get_extra_chain_certs GRPC_SHADOW_SSL_CTX_get_extra_chain_certs
+#define SSL_CTX_get_info_callback GRPC_SHADOW_SSL_CTX_get_info_callback
+#define SSL_CTX_get_keylog_callback GRPC_SHADOW_SSL_CTX_get_keylog_callback
+#define SSL_CTX_get_max_cert_list GRPC_SHADOW_SSL_CTX_get_max_cert_list
+#define SSL_CTX_get_max_proto_version GRPC_SHADOW_SSL_CTX_get_max_proto_version
+#define SSL_CTX_get_min_proto_version GRPC_SHADOW_SSL_CTX_get_min_proto_version
+#define SSL_CTX_get_mode GRPC_SHADOW_SSL_CTX_get_mode
+#define SSL_CTX_get_options GRPC_SHADOW_SSL_CTX_get_options
+#define SSL_CTX_get_quiet_shutdown GRPC_SHADOW_SSL_CTX_get_quiet_shutdown
+#define SSL_CTX_get_read_ahead GRPC_SHADOW_SSL_CTX_get_read_ahead
+#define SSL_CTX_get_session_cache_mode GRPC_SHADOW_SSL_CTX_get_session_cache_mode
+#define SSL_CTX_get_timeout GRPC_SHADOW_SSL_CTX_get_timeout
+#define SSL_CTX_get_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_get_tlsext_ticket_keys
+#define SSL_CTX_get_verify_callback GRPC_SHADOW_SSL_CTX_get_verify_callback
+#define SSL_CTX_get_verify_depth GRPC_SHADOW_SSL_CTX_get_verify_depth
+#define SSL_CTX_get_verify_mode GRPC_SHADOW_SSL_CTX_get_verify_mode
+#define SSL_CTX_load_verify_locations GRPC_SHADOW_SSL_CTX_load_verify_locations
+#define SSL_CTX_need_tmp_RSA GRPC_SHADOW_SSL_CTX_need_tmp_RSA
+#define SSL_CTX_new GRPC_SHADOW_SSL_CTX_new
+#define SSL_CTX_remove_session GRPC_SHADOW_SSL_CTX_remove_session
+#define SSL_CTX_sess_accept GRPC_SHADOW_SSL_CTX_sess_accept
+#define SSL_CTX_sess_accept_good GRPC_SHADOW_SSL_CTX_sess_accept_good
+#define SSL_CTX_sess_accept_renegotiate GRPC_SHADOW_SSL_CTX_sess_accept_renegotiate
+#define SSL_CTX_sess_cache_full GRPC_SHADOW_SSL_CTX_sess_cache_full
+#define SSL_CTX_sess_cb_hits GRPC_SHADOW_SSL_CTX_sess_cb_hits
+#define SSL_CTX_sess_connect GRPC_SHADOW_SSL_CTX_sess_connect
+#define SSL_CTX_sess_connect_good GRPC_SHADOW_SSL_CTX_sess_connect_good
+#define SSL_CTX_sess_connect_renegotiate GRPC_SHADOW_SSL_CTX_sess_connect_renegotiate
+#define SSL_CTX_sess_get_cache_size GRPC_SHADOW_SSL_CTX_sess_get_cache_size
+#define SSL_CTX_sess_get_get_cb GRPC_SHADOW_SSL_CTX_sess_get_get_cb
+#define SSL_CTX_sess_get_new_cb GRPC_SHADOW_SSL_CTX_sess_get_new_cb
+#define SSL_CTX_sess_get_remove_cb GRPC_SHADOW_SSL_CTX_sess_get_remove_cb
+#define SSL_CTX_sess_hits GRPC_SHADOW_SSL_CTX_sess_hits
+#define SSL_CTX_sess_misses GRPC_SHADOW_SSL_CTX_sess_misses
+#define SSL_CTX_sess_number GRPC_SHADOW_SSL_CTX_sess_number
+#define SSL_CTX_sess_set_cache_size GRPC_SHADOW_SSL_CTX_sess_set_cache_size
+#define SSL_CTX_sess_set_get_cb GRPC_SHADOW_SSL_CTX_sess_set_get_cb
+#define SSL_CTX_sess_set_new_cb GRPC_SHADOW_SSL_CTX_sess_set_new_cb
+#define SSL_CTX_sess_set_remove_cb GRPC_SHADOW_SSL_CTX_sess_set_remove_cb
+#define SSL_CTX_sess_timeouts GRPC_SHADOW_SSL_CTX_sess_timeouts
+#define SSL_CTX_set0_buffer_pool GRPC_SHADOW_SSL_CTX_set0_buffer_pool
+#define SSL_CTX_set0_chain GRPC_SHADOW_SSL_CTX_set0_chain
+#define SSL_CTX_set0_client_CAs GRPC_SHADOW_SSL_CTX_set0_client_CAs
+#define SSL_CTX_set0_verify_cert_store GRPC_SHADOW_SSL_CTX_set0_verify_cert_store
+#define SSL_CTX_set1_chain GRPC_SHADOW_SSL_CTX_set1_chain
+#define SSL_CTX_set1_curves GRPC_SHADOW_SSL_CTX_set1_curves
+#define SSL_CTX_set1_curves_list GRPC_SHADOW_SSL_CTX_set1_curves_list
+#define SSL_CTX_set1_param GRPC_SHADOW_SSL_CTX_set1_param
+#define SSL_CTX_set1_sigalgs GRPC_SHADOW_SSL_CTX_set1_sigalgs
+#define SSL_CTX_set1_sigalgs_list GRPC_SHADOW_SSL_CTX_set1_sigalgs_list
+#define SSL_CTX_set1_tls_channel_id GRPC_SHADOW_SSL_CTX_set1_tls_channel_id
+#define SSL_CTX_set1_verify_cert_store GRPC_SHADOW_SSL_CTX_set1_verify_cert_store
+#define SSL_CTX_set_allow_unknown_alpn_protos GRPC_SHADOW_SSL_CTX_set_allow_unknown_alpn_protos
+#define SSL_CTX_set_alpn_protos GRPC_SHADOW_SSL_CTX_set_alpn_protos
+#define SSL_CTX_set_alpn_select_cb GRPC_SHADOW_SSL_CTX_set_alpn_select_cb
+#define SSL_CTX_set_cert_cb GRPC_SHADOW_SSL_CTX_set_cert_cb
+#define SSL_CTX_set_cert_store GRPC_SHADOW_SSL_CTX_set_cert_store
+#define SSL_CTX_set_cert_verify_callback GRPC_SHADOW_SSL_CTX_set_cert_verify_callback
+#define SSL_CTX_set_chain_and_key GRPC_SHADOW_SSL_CTX_set_chain_and_key
+#define SSL_CTX_set_channel_id_cb GRPC_SHADOW_SSL_CTX_set_channel_id_cb
+#define SSL_CTX_set_cipher_list GRPC_SHADOW_SSL_CTX_set_cipher_list
+#define SSL_CTX_set_client_CA_list GRPC_SHADOW_SSL_CTX_set_client_CA_list
+#define SSL_CTX_set_client_cert_cb GRPC_SHADOW_SSL_CTX_set_client_cert_cb
+#define SSL_CTX_set_current_time_cb GRPC_SHADOW_SSL_CTX_set_current_time_cb
+#define SSL_CTX_set_custom_verify GRPC_SHADOW_SSL_CTX_set_custom_verify
+#define SSL_CTX_set_default_passwd_cb GRPC_SHADOW_SSL_CTX_set_default_passwd_cb
+#define SSL_CTX_set_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_set_default_passwd_cb_userdata
+#define SSL_CTX_set_default_verify_paths GRPC_SHADOW_SSL_CTX_set_default_verify_paths
+#define SSL_CTX_set_dos_protection_cb GRPC_SHADOW_SSL_CTX_set_dos_protection_cb
+#define SSL_CTX_set_early_data_enabled GRPC_SHADOW_SSL_CTX_set_early_data_enabled
+#define SSL_CTX_set_ed25519_enabled GRPC_SHADOW_SSL_CTX_set_ed25519_enabled
+#define SSL_CTX_set_ex_data GRPC_SHADOW_SSL_CTX_set_ex_data
+#define SSL_CTX_set_false_start_allowed_without_alpn GRPC_SHADOW_SSL_CTX_set_false_start_allowed_without_alpn
+#define SSL_CTX_set_grease_enabled GRPC_SHADOW_SSL_CTX_set_grease_enabled
+#define SSL_CTX_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_CTX_set_ignore_tls13_downgrade
+#define SSL_CTX_set_info_callback GRPC_SHADOW_SSL_CTX_set_info_callback
+#define SSL_CTX_set_keylog_callback GRPC_SHADOW_SSL_CTX_set_keylog_callback
+#define SSL_CTX_set_max_cert_list GRPC_SHADOW_SSL_CTX_set_max_cert_list
+#define SSL_CTX_set_max_proto_version GRPC_SHADOW_SSL_CTX_set_max_proto_version
+#define SSL_CTX_set_max_send_fragment GRPC_SHADOW_SSL_CTX_set_max_send_fragment
+#define SSL_CTX_set_min_proto_version GRPC_SHADOW_SSL_CTX_set_min_proto_version
+#define SSL_CTX_set_mode GRPC_SHADOW_SSL_CTX_set_mode
+#define SSL_CTX_set_msg_callback GRPC_SHADOW_SSL_CTX_set_msg_callback
+#define SSL_CTX_set_msg_callback_arg GRPC_SHADOW_SSL_CTX_set_msg_callback_arg
+#define SSL_CTX_set_next_protos_advertised_cb GRPC_SHADOW_SSL_CTX_set_next_protos_advertised_cb
+#define SSL_CTX_set_next_proto_select_cb GRPC_SHADOW_SSL_CTX_set_next_proto_select_cb
+#define SSL_CTX_set_ocsp_response GRPC_SHADOW_SSL_CTX_set_ocsp_response
+#define SSL_CTX_set_options GRPC_SHADOW_SSL_CTX_set_options
+#define SSL_CTX_set_private_key_method GRPC_SHADOW_SSL_CTX_set_private_key_method
+#define SSL_CTX_set_psk_client_callback GRPC_SHADOW_SSL_CTX_set_psk_client_callback
+#define SSL_CTX_set_psk_server_callback GRPC_SHADOW_SSL_CTX_set_psk_server_callback
+#define SSL_CTX_set_purpose GRPC_SHADOW_SSL_CTX_set_purpose
+#define SSL_CTX_set_quic_method GRPC_SHADOW_SSL_CTX_set_quic_method
+#define SSL_CTX_set_quiet_shutdown GRPC_SHADOW_SSL_CTX_set_quiet_shutdown
+#define SSL_CTX_set_read_ahead GRPC_SHADOW_SSL_CTX_set_read_ahead
+#define SSL_CTX_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_CTX_set_retain_only_sha256_of_client_certs
+#define SSL_CTX_set_reverify_on_resume GRPC_SHADOW_SSL_CTX_set_reverify_on_resume
+#define SSL_CTX_set_select_certificate_cb GRPC_SHADOW_SSL_CTX_set_select_certificate_cb
+#define SSL_CTX_set_session_cache_mode GRPC_SHADOW_SSL_CTX_set_session_cache_mode
+#define SSL_CTX_set_session_id_context GRPC_SHADOW_SSL_CTX_set_session_id_context
+#define SSL_CTX_set_session_psk_dhe_timeout GRPC_SHADOW_SSL_CTX_set_session_psk_dhe_timeout
+#define SSL_CTX_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_CTX_set_signed_cert_timestamp_list
+#define SSL_CTX_set_signing_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_signing_algorithm_prefs
+#define SSL_CTX_set_srtp_profiles GRPC_SHADOW_SSL_CTX_set_srtp_profiles
+#define SSL_CTX_set_strict_cipher_list GRPC_SHADOW_SSL_CTX_set_strict_cipher_list
+#define SSL_CTX_set_ticket_aead_method GRPC_SHADOW_SSL_CTX_set_ticket_aead_method
+#define SSL_CTX_set_timeout GRPC_SHADOW_SSL_CTX_set_timeout
+#define SSL_CTX_set_tls_channel_id_enabled GRPC_SHADOW_SSL_CTX_set_tls_channel_id_enabled
+#define SSL_CTX_set_tlsext_servername_arg GRPC_SHADOW_SSL_CTX_set_tlsext_servername_arg
+#define SSL_CTX_set_tlsext_servername_callback GRPC_SHADOW_SSL_CTX_set_tlsext_servername_callback
+#define SSL_CTX_set_tlsext_status_arg GRPC_SHADOW_SSL_CTX_set_tlsext_status_arg
+#define SSL_CTX_set_tlsext_status_cb GRPC_SHADOW_SSL_CTX_set_tlsext_status_cb
+#define SSL_CTX_set_tlsext_ticket_key_cb GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_key_cb
+#define SSL_CTX_set_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_keys
+#define SSL_CTX_set_tlsext_use_srtp GRPC_SHADOW_SSL_CTX_set_tlsext_use_srtp
+#define SSL_CTX_set_tmp_dh GRPC_SHADOW_SSL_CTX_set_tmp_dh
+#define SSL_CTX_set_tmp_dh_callback GRPC_SHADOW_SSL_CTX_set_tmp_dh_callback
+#define SSL_CTX_set_tmp_ecdh GRPC_SHADOW_SSL_CTX_set_tmp_ecdh
+#define SSL_CTX_set_tmp_rsa GRPC_SHADOW_SSL_CTX_set_tmp_rsa
+#define SSL_CTX_set_tmp_rsa_callback GRPC_SHADOW_SSL_CTX_set_tmp_rsa_callback
+#define SSL_CTX_set_trust GRPC_SHADOW_SSL_CTX_set_trust
+#define SSL_CTX_set_verify GRPC_SHADOW_SSL_CTX_set_verify
+#define SSL_CTX_set_verify_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_verify_algorithm_prefs
+#define SSL_CTX_set_verify_depth GRPC_SHADOW_SSL_CTX_set_verify_depth
+#define SSL_CTX_up_ref GRPC_SHADOW_SSL_CTX_up_ref
+#define SSL_CTX_use_certificate GRPC_SHADOW_SSL_CTX_use_certificate
+#define SSL_CTX_use_certificate_ASN1 GRPC_SHADOW_SSL_CTX_use_certificate_ASN1
+#define SSL_CTX_use_certificate_chain_file GRPC_SHADOW_SSL_CTX_use_certificate_chain_file
+#define SSL_CTX_use_certificate_file GRPC_SHADOW_SSL_CTX_use_certificate_file
+#define SSL_CTX_use_PrivateKey GRPC_SHADOW_SSL_CTX_use_PrivateKey
+#define SSL_CTX_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_PrivateKey_ASN1
+#define SSL_CTX_use_PrivateKey_file GRPC_SHADOW_SSL_CTX_use_PrivateKey_file
+#define SSL_CTX_use_psk_identity_hint GRPC_SHADOW_SSL_CTX_use_psk_identity_hint
+#define SSL_CTX_use_RSAPrivateKey GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey
+#define SSL_CTX_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_ASN1
+#define SSL_CTX_use_RSAPrivateKey_file GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_file
+#define SSL_cutthrough_complete GRPC_SHADOW_SSL_cutthrough_complete
+#define SSL_delegated_credential_used GRPC_SHADOW_SSL_delegated_credential_used
+#define SSL_do_handshake GRPC_SHADOW_SSL_do_handshake
+#define SSL_dup_CA_list GRPC_SHADOW_SSL_dup_CA_list
+#define SSL_early_callback_ctx_extension_get GRPC_SHADOW_SSL_early_callback_ctx_extension_get
+#define SSL_early_data_accepted GRPC_SHADOW_SSL_early_data_accepted
+#define SSLeay GRPC_SHADOW_SSLeay
+#define SSLeay_version GRPC_SHADOW_SSLeay_version
+#define SSL_enable_ocsp_stapling GRPC_SHADOW_SSL_enable_ocsp_stapling
+#define SSL_enable_signed_cert_timestamps GRPC_SHADOW_SSL_enable_signed_cert_timestamps
+#define SSL_enable_tls_channel_id GRPC_SHADOW_SSL_enable_tls_channel_id
+#define SSL_error_description GRPC_SHADOW_SSL_error_description
+#define SSL_export_keying_material GRPC_SHADOW_SSL_export_keying_material
+#define SSL_free GRPC_SHADOW_SSL_free
+#define SSL_generate_key_block GRPC_SHADOW_SSL_generate_key_block
+#define SSL_get0_alpn_selected GRPC_SHADOW_SSL_get0_alpn_selected
+#define SSL_get0_certificate_types GRPC_SHADOW_SSL_get0_certificate_types
+#define SSL_get0_chain_certs GRPC_SHADOW_SSL_get0_chain_certs
+#define SSL_get0_next_proto_negotiated GRPC_SHADOW_SSL_get0_next_proto_negotiated
+#define SSL_get0_ocsp_response GRPC_SHADOW_SSL_get0_ocsp_response
+#define SSL_get0_param GRPC_SHADOW_SSL_get0_param
+#define SSL_get0_peer_certificates GRPC_SHADOW_SSL_get0_peer_certificates
+#define SSL_get0_peer_verify_algorithms GRPC_SHADOW_SSL_get0_peer_verify_algorithms
+#define SSL_get0_server_requested_CAs GRPC_SHADOW_SSL_get0_server_requested_CAs
+#define SSL_get0_session_id_context GRPC_SHADOW_SSL_get0_session_id_context
+#define SSL_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_get0_signed_cert_timestamp_list
+#define SSL_get1_session GRPC_SHADOW_SSL_get1_session
+#define SSL_get_certificate GRPC_SHADOW_SSL_get_certificate
+#define SSL_get_cipher_by_value GRPC_SHADOW_SSL_get_cipher_by_value
+#define SSL_get_cipher_list GRPC_SHADOW_SSL_get_cipher_list
+#define SSL_get_ciphers GRPC_SHADOW_SSL_get_ciphers
+#define SSL_get_client_CA_list GRPC_SHADOW_SSL_get_client_CA_list
+#define SSL_get_client_random GRPC_SHADOW_SSL_get_client_random
+#define SSL_get_current_cipher GRPC_SHADOW_SSL_get_current_cipher
+#define SSL_get_current_compression GRPC_SHADOW_SSL_get_current_compression
+#define SSL_get_current_expansion GRPC_SHADOW_SSL_get_current_expansion
+#define SSL_get_curve_id GRPC_SHADOW_SSL_get_curve_id
+#define SSL_get_curve_name GRPC_SHADOW_SSL_get_curve_name
+#define SSL_get_default_timeout GRPC_SHADOW_SSL_get_default_timeout
+#define SSL_get_early_data_reason GRPC_SHADOW_SSL_get_early_data_reason
+#define SSL_get_error GRPC_SHADOW_SSL_get_error
+#define SSL_get_ex_data GRPC_SHADOW_SSL_get_ex_data
+#define SSL_get_ex_data_X509_STORE_CTX_idx GRPC_SHADOW_SSL_get_ex_data_X509_STORE_CTX_idx
+#define SSL_get_ex_new_index GRPC_SHADOW_SSL_get_ex_new_index
+#define SSL_get_extms_support GRPC_SHADOW_SSL_get_extms_support
+#define SSL_get_fd GRPC_SHADOW_SSL_get_fd
+#define SSL_get_finished GRPC_SHADOW_SSL_get_finished
+#define SSL_get_info_callback GRPC_SHADOW_SSL_get_info_callback
+#define SSL_get_ivs GRPC_SHADOW_SSL_get_ivs
+#define SSL_get_key_block_len GRPC_SHADOW_SSL_get_key_block_len
+#define SSL_get_max_cert_list GRPC_SHADOW_SSL_get_max_cert_list
+#define SSL_get_max_proto_version GRPC_SHADOW_SSL_get_max_proto_version
+#define SSL_get_min_proto_version GRPC_SHADOW_SSL_get_min_proto_version
+#define SSL_get_mode GRPC_SHADOW_SSL_get_mode
+#define SSL_get_negotiated_token_binding_param GRPC_SHADOW_SSL_get_negotiated_token_binding_param
+#define SSL_get_options GRPC_SHADOW_SSL_get_options
+#define SSL_get_peer_cert_chain GRPC_SHADOW_SSL_get_peer_cert_chain
+#define SSL_get_peer_certificate GRPC_SHADOW_SSL_get_peer_certificate
+#define SSL_get_peer_finished GRPC_SHADOW_SSL_get_peer_finished
+#define SSL_get_peer_full_cert_chain GRPC_SHADOW_SSL_get_peer_full_cert_chain
+#define SSL_get_peer_quic_transport_params GRPC_SHADOW_SSL_get_peer_quic_transport_params
+#define SSL_get_peer_signature_algorithm GRPC_SHADOW_SSL_get_peer_signature_algorithm
+#define SSL_get_pending_cipher GRPC_SHADOW_SSL_get_pending_cipher
+#define SSL_get_privatekey GRPC_SHADOW_SSL_get_privatekey
+#define SSL_get_psk_identity GRPC_SHADOW_SSL_get_psk_identity
+#define SSL_get_psk_identity_hint GRPC_SHADOW_SSL_get_psk_identity_hint
+#define SSL_get_quiet_shutdown GRPC_SHADOW_SSL_get_quiet_shutdown
+#define SSL_get_rbio GRPC_SHADOW_SSL_get_rbio
+#define SSL_get_read_ahead GRPC_SHADOW_SSL_get_read_ahead
+#define SSL_get_read_sequence GRPC_SHADOW_SSL_get_read_sequence
+#define SSL_get_rfd GRPC_SHADOW_SSL_get_rfd
+#define SSL_get_secure_renegotiation_support GRPC_SHADOW_SSL_get_secure_renegotiation_support
+#define SSL_get_selected_srtp_profile GRPC_SHADOW_SSL_get_selected_srtp_profile
+#define SSL_get_servername GRPC_SHADOW_SSL_get_servername
+#define SSL_get_servername_type GRPC_SHADOW_SSL_get_servername_type
+#define SSL_get_server_random GRPC_SHADOW_SSL_get_server_random
+#define SSL_get_server_tmp_key GRPC_SHADOW_SSL_get_server_tmp_key
+#define SSL_get_session GRPC_SHADOW_SSL_get_session
+#define SSL_get_shared_ciphers GRPC_SHADOW_SSL_get_shared_ciphers
+#define SSL_get_shared_sigalgs GRPC_SHADOW_SSL_get_shared_sigalgs
+#define SSL_get_shutdown GRPC_SHADOW_SSL_get_shutdown
+#define SSL_get_signature_algorithm_digest GRPC_SHADOW_SSL_get_signature_algorithm_digest
+#define SSL_get_signature_algorithm_key_type GRPC_SHADOW_SSL_get_signature_algorithm_key_type
+#define SSL_get_signature_algorithm_name GRPC_SHADOW_SSL_get_signature_algorithm_name
+#define SSL_get_srtp_profiles GRPC_SHADOW_SSL_get_srtp_profiles
+#define SSL_get_SSL_CTX GRPC_SHADOW_SSL_get_SSL_CTX
+#define SSL_get_ticket_age_skew GRPC_SHADOW_SSL_get_ticket_age_skew
+#define SSL_get_tls_channel_id GRPC_SHADOW_SSL_get_tls_channel_id
+#define SSL_get_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_get_tlsext_status_ocsp_resp
+#define SSL_get_tlsext_status_type GRPC_SHADOW_SSL_get_tlsext_status_type
+#define SSL_get_tls_unique GRPC_SHADOW_SSL_get_tls_unique
+#define SSL_get_verify_callback GRPC_SHADOW_SSL_get_verify_callback
+#define SSL_get_verify_depth GRPC_SHADOW_SSL_get_verify_depth
+#define SSL_get_verify_mode GRPC_SHADOW_SSL_get_verify_mode
+#define SSL_get_verify_result GRPC_SHADOW_SSL_get_verify_result
+#define SSL_get_version GRPC_SHADOW_SSL_get_version
+#define SSL_get_wbio GRPC_SHADOW_SSL_get_wbio
+#define SSL_get_wfd GRPC_SHADOW_SSL_get_wfd
+#define SSL_get_write_sequence GRPC_SHADOW_SSL_get_write_sequence
+#define SSL_in_early_data GRPC_SHADOW_SSL_in_early_data
+#define SSL_in_false_start GRPC_SHADOW_SSL_in_false_start
+#define SSL_in_init GRPC_SHADOW_SSL_in_init
+#define SSL_is_dtls GRPC_SHADOW_SSL_is_dtls
+#define SSL_is_init_finished GRPC_SHADOW_SSL_is_init_finished
+#define SSL_is_server GRPC_SHADOW_SSL_is_server
+#define SSL_is_signature_algorithm_rsa_pss GRPC_SHADOW_SSL_is_signature_algorithm_rsa_pss
+#define SSL_is_tls13_downgrade GRPC_SHADOW_SSL_is_tls13_downgrade
+#define SSL_is_token_binding_negotiated GRPC_SHADOW_SSL_is_token_binding_negotiated
+#define SSL_key_update GRPC_SHADOW_SSL_key_update
+#define SSL_library_init GRPC_SHADOW_SSL_library_init
+#define SSL_load_client_CA_file GRPC_SHADOW_SSL_load_client_CA_file
+#define SSL_load_error_strings GRPC_SHADOW_SSL_load_error_strings
+#define SSL_magic_pending_session_ptr GRPC_SHADOW_SSL_magic_pending_session_ptr
+#define SSL_max_seal_overhead GRPC_SHADOW_SSL_max_seal_overhead
+#define SSL_need_tmp_RSA GRPC_SHADOW_SSL_need_tmp_RSA
+#define SSL_new GRPC_SHADOW_SSL_new
+#define SSL_num_renegotiations GRPC_SHADOW_SSL_num_renegotiations
+#define SSL_peek GRPC_SHADOW_SSL_peek
+#define SSL_pending GRPC_SHADOW_SSL_pending
+#define SSL_process_quic_post_handshake GRPC_SHADOW_SSL_process_quic_post_handshake
+#define SSL_provide_quic_data GRPC_SHADOW_SSL_provide_quic_data
+#define SSL_quic_max_handshake_flight_len GRPC_SHADOW_SSL_quic_max_handshake_flight_len
+#define SSL_quic_read_level GRPC_SHADOW_SSL_quic_read_level
+#define SSL_quic_write_level GRPC_SHADOW_SSL_quic_write_level
+#define SSL_read GRPC_SHADOW_SSL_read
+#define SSL_renegotiate GRPC_SHADOW_SSL_renegotiate
+#define SSL_renegotiate_pending GRPC_SHADOW_SSL_renegotiate_pending
+#define SSL_reset_early_data_reject GRPC_SHADOW_SSL_reset_early_data_reject
+#define SSL_select_next_proto GRPC_SHADOW_SSL_select_next_proto
+#define SSL_send_fatal_alert GRPC_SHADOW_SSL_send_fatal_alert
+#define SSL_SESSION_early_data_capable GRPC_SHADOW_SSL_SESSION_early_data_capable
+#define SSL_SESSION_free GRPC_SHADOW_SSL_SESSION_free
+#define SSL_SESSION_from_bytes GRPC_SHADOW_SSL_SESSION_from_bytes
+#define SSL_SESSION_get0_cipher GRPC_SHADOW_SSL_SESSION_get0_cipher
+#define SSL_SESSION_get0_id_context GRPC_SHADOW_SSL_SESSION_get0_id_context
+#define SSL_SESSION_get0_ocsp_response GRPC_SHADOW_SSL_SESSION_get0_ocsp_response
+#define SSL_SESSION_get0_peer GRPC_SHADOW_SSL_SESSION_get0_peer
+#define SSL_SESSION_get0_peer_certificates GRPC_SHADOW_SSL_SESSION_get0_peer_certificates
+#define SSL_SESSION_get0_peer_sha256 GRPC_SHADOW_SSL_SESSION_get0_peer_sha256
+#define SSL_SESSION_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_SESSION_get0_signed_cert_timestamp_list
+#define SSL_SESSION_get0_ticket GRPC_SHADOW_SSL_SESSION_get0_ticket
+#define SSL_SESSION_get_ex_data GRPC_SHADOW_SSL_SESSION_get_ex_data
+#define SSL_SESSION_get_ex_new_index GRPC_SHADOW_SSL_SESSION_get_ex_new_index
+#define SSL_SESSION_get_id GRPC_SHADOW_SSL_SESSION_get_id
+#define SSL_SESSION_get_master_key GRPC_SHADOW_SSL_SESSION_get_master_key
+#define SSL_SESSION_get_protocol_version GRPC_SHADOW_SSL_SESSION_get_protocol_version
+#define SSL_SESSION_get_ticket_lifetime_hint GRPC_SHADOW_SSL_SESSION_get_ticket_lifetime_hint
+#define SSL_SESSION_get_time GRPC_SHADOW_SSL_SESSION_get_time
+#define SSL_SESSION_get_timeout GRPC_SHADOW_SSL_SESSION_get_timeout
+#define SSL_SESSION_get_version GRPC_SHADOW_SSL_SESSION_get_version
+#define SSL_SESSION_has_peer_sha256 GRPC_SHADOW_SSL_SESSION_has_peer_sha256
+#define SSL_SESSION_has_ticket GRPC_SHADOW_SSL_SESSION_has_ticket
+#define SSL_SESSION_is_resumable GRPC_SHADOW_SSL_SESSION_is_resumable
+#define SSL_SESSION_new GRPC_SHADOW_SSL_SESSION_new
+#define SSL_session_reused GRPC_SHADOW_SSL_session_reused
+#define SSL_SESSION_set1_id GRPC_SHADOW_SSL_SESSION_set1_id
+#define SSL_SESSION_set1_id_context GRPC_SHADOW_SSL_SESSION_set1_id_context
+#define SSL_SESSION_set_ex_data GRPC_SHADOW_SSL_SESSION_set_ex_data
+#define SSL_SESSION_set_protocol_version GRPC_SHADOW_SSL_SESSION_set_protocol_version
+#define SSL_SESSION_set_ticket GRPC_SHADOW_SSL_SESSION_set_ticket
+#define SSL_SESSION_set_time GRPC_SHADOW_SSL_SESSION_set_time
+#define SSL_SESSION_set_timeout GRPC_SHADOW_SSL_SESSION_set_timeout
+#define SSL_SESSION_should_be_single_use GRPC_SHADOW_SSL_SESSION_should_be_single_use
+#define SSL_SESSION_to_bytes GRPC_SHADOW_SSL_SESSION_to_bytes
+#define SSL_SESSION_to_bytes_for_ticket GRPC_SHADOW_SSL_SESSION_to_bytes_for_ticket
+#define SSL_SESSION_up_ref GRPC_SHADOW_SSL_SESSION_up_ref
+#define SSL_set0_chain GRPC_SHADOW_SSL_set0_chain
+#define SSL_set0_client_CAs GRPC_SHADOW_SSL_set0_client_CAs
+#define SSL_set0_rbio GRPC_SHADOW_SSL_set0_rbio
+#define SSL_set0_verify_cert_store GRPC_SHADOW_SSL_set0_verify_cert_store
+#define SSL_set0_wbio GRPC_SHADOW_SSL_set0_wbio
+#define SSL_set1_chain GRPC_SHADOW_SSL_set1_chain
+#define SSL_set1_curves GRPC_SHADOW_SSL_set1_curves
+#define SSL_set1_curves_list GRPC_SHADOW_SSL_set1_curves_list
+#define SSL_set1_delegated_credential GRPC_SHADOW_SSL_set1_delegated_credential
+#define SSL_set1_param GRPC_SHADOW_SSL_set1_param
+#define SSL_set1_sigalgs GRPC_SHADOW_SSL_set1_sigalgs
+#define SSL_set1_sigalgs_list GRPC_SHADOW_SSL_set1_sigalgs_list
+#define SSL_set1_tls_channel_id GRPC_SHADOW_SSL_set1_tls_channel_id
+#define SSL_set1_verify_cert_store GRPC_SHADOW_SSL_set1_verify_cert_store
+#define SSL_set_accept_state GRPC_SHADOW_SSL_set_accept_state
+#define SSL_set_alpn_protos GRPC_SHADOW_SSL_set_alpn_protos
+#define SSL_set_bio GRPC_SHADOW_SSL_set_bio
+#define SSL_set_cert_cb GRPC_SHADOW_SSL_set_cert_cb
+#define SSL_set_chain_and_key GRPC_SHADOW_SSL_set_chain_and_key
+#define SSL_set_cipher_list GRPC_SHADOW_SSL_set_cipher_list
+#define SSL_set_client_CA_list GRPC_SHADOW_SSL_set_client_CA_list
+#define SSL_set_connect_state GRPC_SHADOW_SSL_set_connect_state
+#define SSL_set_custom_verify GRPC_SHADOW_SSL_set_custom_verify
+#define SSL_set_early_data_enabled GRPC_SHADOW_SSL_set_early_data_enabled
+#define SSL_set_enforce_rsa_key_usage GRPC_SHADOW_SSL_set_enforce_rsa_key_usage
+#define SSL_set_ex_data GRPC_SHADOW_SSL_set_ex_data
+#define SSL_set_fd GRPC_SHADOW_SSL_set_fd
+#define SSL_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_set_ignore_tls13_downgrade
+#define SSL_set_info_callback GRPC_SHADOW_SSL_set_info_callback
+#define SSL_set_jdk11_workaround GRPC_SHADOW_SSL_set_jdk11_workaround
+#define SSL_set_max_cert_list GRPC_SHADOW_SSL_set_max_cert_list
+#define SSL_set_max_proto_version GRPC_SHADOW_SSL_set_max_proto_version
+#define SSL_set_max_send_fragment GRPC_SHADOW_SSL_set_max_send_fragment
+#define SSL_set_min_proto_version GRPC_SHADOW_SSL_set_min_proto_version
+#define SSL_set_mode GRPC_SHADOW_SSL_set_mode
+#define SSL_set_msg_callback GRPC_SHADOW_SSL_set_msg_callback
+#define SSL_set_msg_callback_arg GRPC_SHADOW_SSL_set_msg_callback_arg
+#define SSL_set_mtu GRPC_SHADOW_SSL_set_mtu
+#define SSL_set_ocsp_response GRPC_SHADOW_SSL_set_ocsp_response
+#define SSL_set_options GRPC_SHADOW_SSL_set_options
+#define SSL_set_private_key_method GRPC_SHADOW_SSL_set_private_key_method
+#define SSL_set_psk_client_callback GRPC_SHADOW_SSL_set_psk_client_callback
+#define SSL_set_psk_server_callback GRPC_SHADOW_SSL_set_psk_server_callback
+#define SSL_set_purpose GRPC_SHADOW_SSL_set_purpose
+#define SSL_set_quic_method GRPC_SHADOW_SSL_set_quic_method
+#define SSL_set_quic_transport_params GRPC_SHADOW_SSL_set_quic_transport_params
+#define SSL_set_quiet_shutdown GRPC_SHADOW_SSL_set_quiet_shutdown
+#define SSL_set_read_ahead GRPC_SHADOW_SSL_set_read_ahead
+#define SSL_set_renegotiate_mode GRPC_SHADOW_SSL_set_renegotiate_mode
+#define SSL_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_set_retain_only_sha256_of_client_certs
+#define SSL_set_rfd GRPC_SHADOW_SSL_set_rfd
+#define SSL_set_session GRPC_SHADOW_SSL_set_session
+#define SSL_set_session_id_context GRPC_SHADOW_SSL_set_session_id_context
+#define SSL_set_shed_handshake_config GRPC_SHADOW_SSL_set_shed_handshake_config
+#define SSL_set_shutdown GRPC_SHADOW_SSL_set_shutdown
+#define SSL_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_set_signed_cert_timestamp_list
+#define SSL_set_signing_algorithm_prefs GRPC_SHADOW_SSL_set_signing_algorithm_prefs
+#define SSL_set_srtp_profiles GRPC_SHADOW_SSL_set_srtp_profiles
+#define SSL_set_SSL_CTX GRPC_SHADOW_SSL_set_SSL_CTX
+#define SSL_set_state GRPC_SHADOW_SSL_set_state
+#define SSL_set_strict_cipher_list GRPC_SHADOW_SSL_set_strict_cipher_list
+#define SSL_set_tls_channel_id_enabled GRPC_SHADOW_SSL_set_tls_channel_id_enabled
+#define SSL_set_tlsext_host_name GRPC_SHADOW_SSL_set_tlsext_host_name
+#define SSL_set_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_set_tlsext_status_ocsp_resp
+#define SSL_set_tlsext_status_type GRPC_SHADOW_SSL_set_tlsext_status_type
+#define SSL_set_tlsext_use_srtp GRPC_SHADOW_SSL_set_tlsext_use_srtp
+#define SSL_set_tmp_dh GRPC_SHADOW_SSL_set_tmp_dh
+#define SSL_set_tmp_dh_callback GRPC_SHADOW_SSL_set_tmp_dh_callback
+#define SSL_set_tmp_ecdh GRPC_SHADOW_SSL_set_tmp_ecdh
+#define SSL_set_tmp_rsa GRPC_SHADOW_SSL_set_tmp_rsa
+#define SSL_set_tmp_rsa_callback GRPC_SHADOW_SSL_set_tmp_rsa_callback
+#define SSL_set_token_binding_params GRPC_SHADOW_SSL_set_token_binding_params
+#define SSL_set_trust GRPC_SHADOW_SSL_set_trust
+#define SSL_set_verify GRPC_SHADOW_SSL_set_verify
+#define SSL_set_verify_depth GRPC_SHADOW_SSL_set_verify_depth
+#define SSL_set_verify_result GRPC_SHADOW_SSL_set_verify_result
+#define SSL_set_wfd GRPC_SHADOW_SSL_set_wfd
+#define SSL_shutdown GRPC_SHADOW_SSL_shutdown
+#define SSL_state GRPC_SHADOW_SSL_state
+#define SSL_state_string GRPC_SHADOW_SSL_state_string
+#define SSL_state_string_long GRPC_SHADOW_SSL_state_string_long
+#define SSL_total_renegotiations GRPC_SHADOW_SSL_total_renegotiations
+#define SSL_use_certificate GRPC_SHADOW_SSL_use_certificate
+#define SSL_use_certificate_ASN1 GRPC_SHADOW_SSL_use_certificate_ASN1
+#define SSL_use_certificate_file GRPC_SHADOW_SSL_use_certificate_file
+#define SSL_used_hello_retry_request GRPC_SHADOW_SSL_used_hello_retry_request
+#define SSL_use_PrivateKey GRPC_SHADOW_SSL_use_PrivateKey
+#define SSL_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_use_PrivateKey_ASN1
+#define SSL_use_PrivateKey_file GRPC_SHADOW_SSL_use_PrivateKey_file
+#define SSL_use_psk_identity_hint GRPC_SHADOW_SSL_use_psk_identity_hint
+#define SSL_use_RSAPrivateKey GRPC_SHADOW_SSL_use_RSAPrivateKey
+#define SSL_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_use_RSAPrivateKey_ASN1
+#define SSL_use_RSAPrivateKey_file GRPC_SHADOW_SSL_use_RSAPrivateKey_file
+#define SSLv23_client_method GRPC_SHADOW_SSLv23_client_method
+#define SSLv23_method GRPC_SHADOW_SSLv23_method
+#define SSLv23_server_method GRPC_SHADOW_SSLv23_server_method
+#define SSL_version GRPC_SHADOW_SSL_version
+#define SSL_want GRPC_SHADOW_SSL_want
+#define SSL_write GRPC_SHADOW_SSL_write
+#define SXNET_add_id_asc GRPC_SHADOW_SXNET_add_id_asc
+#define SXNET_add_id_INTEGER GRPC_SHADOW_SXNET_add_id_INTEGER
+#define SXNET_add_id_ulong GRPC_SHADOW_SXNET_add_id_ulong
+#define SXNET_free GRPC_SHADOW_SXNET_free
+#define SXNET_get_id_asc GRPC_SHADOW_SXNET_get_id_asc
+#define SXNET_get_id_INTEGER GRPC_SHADOW_SXNET_get_id_INTEGER
+#define SXNET_get_id_ulong GRPC_SHADOW_SXNET_get_id_ulong
+#define SXNETID_free GRPC_SHADOW_SXNETID_free
+#define SXNETID_it GRPC_SHADOW_SXNETID_it
+#define SXNETID_new GRPC_SHADOW_SXNETID_new
+#define SXNET_it GRPC_SHADOW_SXNET_it
+#define SXNET_new GRPC_SHADOW_SXNET_new
+#define TLS_client_method GRPC_SHADOW_TLS_client_method
+#define TLS_method GRPC_SHADOW_TLS_method
+#define TLS_server_method GRPC_SHADOW_TLS_server_method
+#define TLSv1_1_client_method GRPC_SHADOW_TLSv1_1_client_method
+#define TLSv1_1_method GRPC_SHADOW_TLSv1_1_method
+#define TLSv1_1_server_method GRPC_SHADOW_TLSv1_1_server_method
+#define TLSv1_2_client_method GRPC_SHADOW_TLSv1_2_client_method
+#define TLSv1_2_method GRPC_SHADOW_TLSv1_2_method
+#define TLSv1_2_server_method GRPC_SHADOW_TLSv1_2_server_method
+#define TLSv1_client_method GRPC_SHADOW_TLSv1_client_method
+#define TLSv1_method GRPC_SHADOW_TLSv1_method
+#define TLSv1_server_method GRPC_SHADOW_TLSv1_server_method
+#define TLS_with_buffers_method GRPC_SHADOW_TLS_with_buffers_method
+#define tree_find_sk GRPC_SHADOW_tree_find_sk
+#define USERNOTICE_free GRPC_SHADOW_USERNOTICE_free
+#define USERNOTICE_it GRPC_SHADOW_USERNOTICE_it
+#define USERNOTICE_new GRPC_SHADOW_USERNOTICE_new
+#define UTF8_getc GRPC_SHADOW_UTF8_getc
+#define UTF8_putc GRPC_SHADOW_UTF8_putc
+#define v2i_ASN1_BIT_STRING GRPC_SHADOW_v2i_ASN1_BIT_STRING
+#define v2i_GENERAL_NAME GRPC_SHADOW_v2i_GENERAL_NAME
+#define v2i_GENERAL_NAME_ex GRPC_SHADOW_v2i_GENERAL_NAME_ex
+#define v2i_GENERAL_NAMES GRPC_SHADOW_v2i_GENERAL_NAMES
+#define v3_akey_id GRPC_SHADOW_v3_akey_id
+#define v3_alt GRPC_SHADOW_v3_alt
+#define v3_bcons GRPC_SHADOW_v3_bcons
+#define v3_cpols GRPC_SHADOW_v3_cpols
+#define v3_crld GRPC_SHADOW_v3_crld
+#define v3_crl_invdate GRPC_SHADOW_v3_crl_invdate
+#define v3_crl_num GRPC_SHADOW_v3_crl_num
+#define v3_crl_reason GRPC_SHADOW_v3_crl_reason
+#define v3_delta_crl GRPC_SHADOW_v3_delta_crl
+#define v3_ext_ku GRPC_SHADOW_v3_ext_ku
+#define v3_freshest_crl GRPC_SHADOW_v3_freshest_crl
+#define v3_idp GRPC_SHADOW_v3_idp
+#define v3_info GRPC_SHADOW_v3_info
+#define v3_inhibit_anyp GRPC_SHADOW_v3_inhibit_anyp
+#define v3_key_usage GRPC_SHADOW_v3_key_usage
+#define v3_name_constraints GRPC_SHADOW_v3_name_constraints
+#define v3_nscert GRPC_SHADOW_v3_nscert
+#define v3_ns_ia5_list GRPC_SHADOW_v3_ns_ia5_list
+#define v3_ocsp_accresp GRPC_SHADOW_v3_ocsp_accresp
+#define v3_ocsp_nocheck GRPC_SHADOW_v3_ocsp_nocheck
+#define v3_pci GRPC_SHADOW_v3_pci
+#define v3_pkey_usage_period GRPC_SHADOW_v3_pkey_usage_period
+#define v3_policy_constraints GRPC_SHADOW_v3_policy_constraints
+#define v3_policy_mappings GRPC_SHADOW_v3_policy_mappings
+#define v3_sinfo GRPC_SHADOW_v3_sinfo
+#define v3_skey_id GRPC_SHADOW_v3_skey_id
+#define v3_sxnet GRPC_SHADOW_v3_sxnet
+#define vpaes_cbc_encrypt GRPC_SHADOW_vpaes_cbc_encrypt
+#define vpaes_ctr32_encrypt_blocks GRPC_SHADOW_vpaes_ctr32_encrypt_blocks
+#define vpaes_decrypt GRPC_SHADOW_vpaes_decrypt
+#define vpaes_encrypt GRPC_SHADOW_vpaes_encrypt
+#define vpaes_set_decrypt_key GRPC_SHADOW_vpaes_set_decrypt_key
+#define vpaes_set_encrypt_key GRPC_SHADOW_vpaes_set_encrypt_key
+#define X25519 GRPC_SHADOW_X25519
+#define x25519_asn1_meth GRPC_SHADOW_x25519_asn1_meth
+#define x25519_ge_add GRPC_SHADOW_x25519_ge_add
+#define x25519_ge_frombytes_vartime GRPC_SHADOW_x25519_ge_frombytes_vartime
+#define x25519_ge_p1p1_to_p2 GRPC_SHADOW_x25519_ge_p1p1_to_p2
+#define x25519_ge_p1p1_to_p3 GRPC_SHADOW_x25519_ge_p1p1_to_p3
+#define x25519_ge_p3_to_cached GRPC_SHADOW_x25519_ge_p3_to_cached
+#define x25519_ge_scalarmult GRPC_SHADOW_x25519_ge_scalarmult
+#define x25519_ge_scalarmult_base GRPC_SHADOW_x25519_ge_scalarmult_base
+#define x25519_ge_scalarmult_small_precomp GRPC_SHADOW_x25519_ge_scalarmult_small_precomp
+#define x25519_ge_sub GRPC_SHADOW_x25519_ge_sub
+#define x25519_ge_tobytes GRPC_SHADOW_x25519_ge_tobytes
+#define X25519_keypair GRPC_SHADOW_X25519_keypair
+#define x25519_pkey_meth GRPC_SHADOW_x25519_pkey_meth
+#define X25519_public_from_private GRPC_SHADOW_X25519_public_from_private
+#define x25519_sc_reduce GRPC_SHADOW_x25519_sc_reduce
+#define X509_add1_ext_i2d GRPC_SHADOW_X509_add1_ext_i2d
+#define X509_add1_reject_object GRPC_SHADOW_X509_add1_reject_object
+#define X509_add1_trust_object GRPC_SHADOW_X509_add1_trust_object
+#define X509_add_ext GRPC_SHADOW_X509_add_ext
+#define X509_ALGOR_cmp GRPC_SHADOW_X509_ALGOR_cmp
+#define X509_ALGOR_dup GRPC_SHADOW_X509_ALGOR_dup
+#define X509_ALGOR_free GRPC_SHADOW_X509_ALGOR_free
+#define X509_ALGOR_get0 GRPC_SHADOW_X509_ALGOR_get0
+#define X509_ALGOR_it GRPC_SHADOW_X509_ALGOR_it
+#define X509_ALGOR_new GRPC_SHADOW_X509_ALGOR_new
+#define X509_ALGOR_set0 GRPC_SHADOW_X509_ALGOR_set0
+#define X509_ALGOR_set_md GRPC_SHADOW_X509_ALGOR_set_md
+#define X509_ALGORS_it GRPC_SHADOW_X509_ALGORS_it
+#define X509_alias_get0 GRPC_SHADOW_X509_alias_get0
+#define X509_alias_set1 GRPC_SHADOW_X509_alias_set1
+#define X509at_add1_attr GRPC_SHADOW_X509at_add1_attr
+#define X509at_add1_attr_by_NID GRPC_SHADOW_X509at_add1_attr_by_NID
+#define X509at_add1_attr_by_OBJ GRPC_SHADOW_X509at_add1_attr_by_OBJ
+#define X509at_add1_attr_by_txt GRPC_SHADOW_X509at_add1_attr_by_txt
+#define X509at_delete_attr GRPC_SHADOW_X509at_delete_attr
+#define X509at_get0_data_by_OBJ GRPC_SHADOW_X509at_get0_data_by_OBJ
+#define X509at_get_attr GRPC_SHADOW_X509at_get_attr
+#define X509at_get_attr_by_NID GRPC_SHADOW_X509at_get_attr_by_NID
+#define X509at_get_attr_by_OBJ GRPC_SHADOW_X509at_get_attr_by_OBJ
+#define X509at_get_attr_count GRPC_SHADOW_X509at_get_attr_count
+#define X509_ATTRIBUTE_count GRPC_SHADOW_X509_ATTRIBUTE_count
+#define X509_ATTRIBUTE_create GRPC_SHADOW_X509_ATTRIBUTE_create
+#define X509_ATTRIBUTE_create_by_NID GRPC_SHADOW_X509_ATTRIBUTE_create_by_NID
+#define X509_ATTRIBUTE_create_by_OBJ GRPC_SHADOW_X509_ATTRIBUTE_create_by_OBJ
+#define X509_ATTRIBUTE_create_by_txt GRPC_SHADOW_X509_ATTRIBUTE_create_by_txt
+#define X509_ATTRIBUTE_dup GRPC_SHADOW_X509_ATTRIBUTE_dup
+#define X509_ATTRIBUTE_free GRPC_SHADOW_X509_ATTRIBUTE_free
+#define X509_ATTRIBUTE_get0_data GRPC_SHADOW_X509_ATTRIBUTE_get0_data
+#define X509_ATTRIBUTE_get0_object GRPC_SHADOW_X509_ATTRIBUTE_get0_object
+#define X509_ATTRIBUTE_get0_type GRPC_SHADOW_X509_ATTRIBUTE_get0_type
+#define X509_ATTRIBUTE_it GRPC_SHADOW_X509_ATTRIBUTE_it
+#define X509_ATTRIBUTE_new GRPC_SHADOW_X509_ATTRIBUTE_new
+#define X509_ATTRIBUTE_set1_data GRPC_SHADOW_X509_ATTRIBUTE_set1_data
+#define X509_ATTRIBUTE_set1_object GRPC_SHADOW_X509_ATTRIBUTE_set1_object
+#define X509_ATTRIBUTE_SET_it GRPC_SHADOW_X509_ATTRIBUTE_SET_it
+#define X509_CERT_AUX_free GRPC_SHADOW_X509_CERT_AUX_free
+#define X509_CERT_AUX_it GRPC_SHADOW_X509_CERT_AUX_it
+#define X509_CERT_AUX_new GRPC_SHADOW_X509_CERT_AUX_new
+#define X509_CERT_AUX_print GRPC_SHADOW_X509_CERT_AUX_print
+#define X509_chain_check_suiteb GRPC_SHADOW_X509_chain_check_suiteb
+#define X509_chain_up_ref GRPC_SHADOW_X509_chain_up_ref
+#define X509_check_akid GRPC_SHADOW_X509_check_akid
+#define X509_check_ca GRPC_SHADOW_X509_check_ca
+#define X509_check_email GRPC_SHADOW_X509_check_email
+#define X509_check_host GRPC_SHADOW_X509_check_host
+#define X509_check_ip GRPC_SHADOW_X509_check_ip
+#define X509_check_ip_asc GRPC_SHADOW_X509_check_ip_asc
+#define X509_check_issued GRPC_SHADOW_X509_check_issued
+#define X509_check_private_key GRPC_SHADOW_X509_check_private_key
+#define X509_check_purpose GRPC_SHADOW_X509_check_purpose
+#define X509_check_trust GRPC_SHADOW_X509_check_trust
+#define X509_CINF_free GRPC_SHADOW_X509_CINF_free
+#define X509_CINF_it GRPC_SHADOW_X509_CINF_it
+#define X509_CINF_new GRPC_SHADOW_X509_CINF_new
+#define X509_cmp GRPC_SHADOW_X509_cmp
+#define X509_cmp_current_time GRPC_SHADOW_X509_cmp_current_time
+#define X509_cmp_time GRPC_SHADOW_X509_cmp_time
+#define X509_CRL_add0_revoked GRPC_SHADOW_X509_CRL_add0_revoked
+#define X509_CRL_add1_ext_i2d GRPC_SHADOW_X509_CRL_add1_ext_i2d
+#define X509_CRL_add_ext GRPC_SHADOW_X509_CRL_add_ext
+#define X509_CRL_check_suiteb GRPC_SHADOW_X509_CRL_check_suiteb
+#define X509_CRL_cmp GRPC_SHADOW_X509_CRL_cmp
+#define X509_CRL_delete_ext GRPC_SHADOW_X509_CRL_delete_ext
+#define X509_CRL_diff GRPC_SHADOW_X509_CRL_diff
+#define X509_CRL_digest GRPC_SHADOW_X509_CRL_digest
+#define X509_CRL_dup GRPC_SHADOW_X509_CRL_dup
+#define X509_CRL_free GRPC_SHADOW_X509_CRL_free
+#define X509_CRL_get0_by_cert GRPC_SHADOW_X509_CRL_get0_by_cert
+#define X509_CRL_get0_by_serial GRPC_SHADOW_X509_CRL_get0_by_serial
+#define X509_CRL_get0_lastUpdate GRPC_SHADOW_X509_CRL_get0_lastUpdate
+#define X509_CRL_get0_nextUpdate GRPC_SHADOW_X509_CRL_get0_nextUpdate
+#define X509_CRL_get0_signature GRPC_SHADOW_X509_CRL_get0_signature
+#define X509_CRL_get_ext GRPC_SHADOW_X509_CRL_get_ext
+#define X509_CRL_get_ext_by_critical GRPC_SHADOW_X509_CRL_get_ext_by_critical
+#define X509_CRL_get_ext_by_NID GRPC_SHADOW_X509_CRL_get_ext_by_NID
+#define X509_CRL_get_ext_by_OBJ GRPC_SHADOW_X509_CRL_get_ext_by_OBJ
+#define X509_CRL_get_ext_count GRPC_SHADOW_X509_CRL_get_ext_count
+#define X509_CRL_get_ext_d2i GRPC_SHADOW_X509_CRL_get_ext_d2i
+#define X509_CRL_get_meth_data GRPC_SHADOW_X509_CRL_get_meth_data
+#define X509_CRL_get_signature_nid GRPC_SHADOW_X509_CRL_get_signature_nid
+#define X509_CRL_INFO_free GRPC_SHADOW_X509_CRL_INFO_free
+#define X509_CRL_INFO_it GRPC_SHADOW_X509_CRL_INFO_it
+#define X509_CRL_INFO_new GRPC_SHADOW_X509_CRL_INFO_new
+#define X509_CRL_it GRPC_SHADOW_X509_CRL_it
+#define X509_CRL_match GRPC_SHADOW_X509_CRL_match
+#define X509_CRL_METHOD_free GRPC_SHADOW_X509_CRL_METHOD_free
+#define X509_CRL_METHOD_new GRPC_SHADOW_X509_CRL_METHOD_new
+#define X509_CRL_new GRPC_SHADOW_X509_CRL_new
+#define X509_CRL_print GRPC_SHADOW_X509_CRL_print
+#define X509_CRL_print_fp GRPC_SHADOW_X509_CRL_print_fp
+#define X509_CRL_set_default_method GRPC_SHADOW_X509_CRL_set_default_method
+#define X509_CRL_set_issuer_name GRPC_SHADOW_X509_CRL_set_issuer_name
+#define X509_CRL_set_lastUpdate GRPC_SHADOW_X509_CRL_set_lastUpdate
+#define X509_CRL_set_meth_data GRPC_SHADOW_X509_CRL_set_meth_data
+#define X509_CRL_set_nextUpdate GRPC_SHADOW_X509_CRL_set_nextUpdate
+#define X509_CRL_set_version GRPC_SHADOW_X509_CRL_set_version
+#define X509_CRL_sign GRPC_SHADOW_X509_CRL_sign
+#define X509_CRL_sign_ctx GRPC_SHADOW_X509_CRL_sign_ctx
+#define X509_CRL_sort GRPC_SHADOW_X509_CRL_sort
+#define X509_CRL_up_ref GRPC_SHADOW_X509_CRL_up_ref
+#define X509_CRL_verify GRPC_SHADOW_X509_CRL_verify
+#define X509_delete_ext GRPC_SHADOW_X509_delete_ext
+#define X509_digest GRPC_SHADOW_X509_digest
+#define x509_digest_sign_algorithm GRPC_SHADOW_x509_digest_sign_algorithm
+#define x509_digest_verify_init GRPC_SHADOW_x509_digest_verify_init
+#define X509_dup GRPC_SHADOW_X509_dup
+#define X509_email_free GRPC_SHADOW_X509_email_free
+#define X509_EXTENSION_create_by_NID GRPC_SHADOW_X509_EXTENSION_create_by_NID
+#define X509_EXTENSION_create_by_OBJ GRPC_SHADOW_X509_EXTENSION_create_by_OBJ
+#define X509_EXTENSION_dup GRPC_SHADOW_X509_EXTENSION_dup
+#define X509_EXTENSION_free GRPC_SHADOW_X509_EXTENSION_free
+#define X509_EXTENSION_get_critical GRPC_SHADOW_X509_EXTENSION_get_critical
+#define X509_EXTENSION_get_data GRPC_SHADOW_X509_EXTENSION_get_data
+#define X509_EXTENSION_get_object GRPC_SHADOW_X509_EXTENSION_get_object
+#define X509_EXTENSION_it GRPC_SHADOW_X509_EXTENSION_it
+#define X509_EXTENSION_new GRPC_SHADOW_X509_EXTENSION_new
+#define X509_EXTENSION_set_critical GRPC_SHADOW_X509_EXTENSION_set_critical
+#define X509_EXTENSION_set_data GRPC_SHADOW_X509_EXTENSION_set_data
+#define X509_EXTENSION_set_object GRPC_SHADOW_X509_EXTENSION_set_object
+#define X509_EXTENSIONS_it GRPC_SHADOW_X509_EXTENSIONS_it
+#define X509_find_by_issuer_and_serial GRPC_SHADOW_X509_find_by_issuer_and_serial
+#define X509_find_by_subject GRPC_SHADOW_X509_find_by_subject
+#define X509_free GRPC_SHADOW_X509_free
+#define X509_get0_extensions GRPC_SHADOW_X509_get0_extensions
+#define X509_get0_notAfter GRPC_SHADOW_X509_get0_notAfter
+#define X509_get0_notBefore GRPC_SHADOW_X509_get0_notBefore
+#define X509_get0_pubkey_bitstr GRPC_SHADOW_X509_get0_pubkey_bitstr
+#define X509_get0_signature GRPC_SHADOW_X509_get0_signature
+#define X509_get0_tbs_sigalg GRPC_SHADOW_X509_get0_tbs_sigalg
+#define X509_get1_email GRPC_SHADOW_X509_get1_email
+#define X509_get1_ocsp GRPC_SHADOW_X509_get1_ocsp
+#define X509_get_default_cert_area GRPC_SHADOW_X509_get_default_cert_area
+#define X509_get_default_cert_dir GRPC_SHADOW_X509_get_default_cert_dir
+#define X509_get_default_cert_dir_env GRPC_SHADOW_X509_get_default_cert_dir_env
+#define X509_get_default_cert_file GRPC_SHADOW_X509_get_default_cert_file
+#define X509_get_default_cert_file_env GRPC_SHADOW_X509_get_default_cert_file_env
+#define X509_get_default_private_dir GRPC_SHADOW_X509_get_default_private_dir
+#define X509_get_ex_data GRPC_SHADOW_X509_get_ex_data
+#define X509_get_ex_new_index GRPC_SHADOW_X509_get_ex_new_index
+#define X509_get_ext GRPC_SHADOW_X509_get_ext
+#define X509_get_ext_by_critical GRPC_SHADOW_X509_get_ext_by_critical
+#define X509_get_ext_by_NID GRPC_SHADOW_X509_get_ext_by_NID
+#define X509_get_ext_by_OBJ GRPC_SHADOW_X509_get_ext_by_OBJ
+#define X509_get_ext_count GRPC_SHADOW_X509_get_ext_count
+#define X509_get_ext_d2i GRPC_SHADOW_X509_get_ext_d2i
+#define X509_get_extended_key_usage GRPC_SHADOW_X509_get_extended_key_usage
+#define X509_get_extension_flags GRPC_SHADOW_X509_get_extension_flags
+#define X509_get_issuer_name GRPC_SHADOW_X509_get_issuer_name
+#define X509_get_key_usage GRPC_SHADOW_X509_get_key_usage
+#define X509_get_pubkey GRPC_SHADOW_X509_get_pubkey
+#define X509_get_serialNumber GRPC_SHADOW_X509_get_serialNumber
+#define X509_get_signature_nid GRPC_SHADOW_X509_get_signature_nid
+#define X509_get_subject_name GRPC_SHADOW_X509_get_subject_name
+#define X509_gmtime_adj GRPC_SHADOW_X509_gmtime_adj
+#define X509_INFO_free GRPC_SHADOW_X509_INFO_free
+#define X509_INFO_new GRPC_SHADOW_X509_INFO_new
+#define X509_issuer_and_serial_cmp GRPC_SHADOW_X509_issuer_and_serial_cmp
+#define X509_issuer_and_serial_hash GRPC_SHADOW_X509_issuer_and_serial_hash
+#define X509_issuer_name_cmp GRPC_SHADOW_X509_issuer_name_cmp
+#define X509_issuer_name_hash GRPC_SHADOW_X509_issuer_name_hash
+#define X509_issuer_name_hash_old GRPC_SHADOW_X509_issuer_name_hash_old
+#define X509_it GRPC_SHADOW_X509_it
+#define X509_keyid_get0 GRPC_SHADOW_X509_keyid_get0
+#define X509_keyid_set1 GRPC_SHADOW_X509_keyid_set1
+#define X509_load_cert_crl_file GRPC_SHADOW_X509_load_cert_crl_file
+#define X509_load_cert_file GRPC_SHADOW_X509_load_cert_file
+#define X509_load_crl_file GRPC_SHADOW_X509_load_crl_file
+#define X509_LOOKUP_by_alias GRPC_SHADOW_X509_LOOKUP_by_alias
+#define X509_LOOKUP_by_fingerprint GRPC_SHADOW_X509_LOOKUP_by_fingerprint
+#define X509_LOOKUP_by_issuer_serial GRPC_SHADOW_X509_LOOKUP_by_issuer_serial
+#define X509_LOOKUP_by_subject GRPC_SHADOW_X509_LOOKUP_by_subject
+#define X509_LOOKUP_ctrl GRPC_SHADOW_X509_LOOKUP_ctrl
+#define X509_LOOKUP_file GRPC_SHADOW_X509_LOOKUP_file
+#define X509_LOOKUP_free GRPC_SHADOW_X509_LOOKUP_free
+#define X509_LOOKUP_hash_dir GRPC_SHADOW_X509_LOOKUP_hash_dir
+#define X509_LOOKUP_init GRPC_SHADOW_X509_LOOKUP_init
+#define X509_LOOKUP_new GRPC_SHADOW_X509_LOOKUP_new
+#define X509_LOOKUP_shutdown GRPC_SHADOW_X509_LOOKUP_shutdown
+#define X509_NAME_add_entry GRPC_SHADOW_X509_NAME_add_entry
+#define X509_NAME_add_entry_by_NID GRPC_SHADOW_X509_NAME_add_entry_by_NID
+#define X509_NAME_add_entry_by_OBJ GRPC_SHADOW_X509_NAME_add_entry_by_OBJ
+#define X509_NAME_add_entry_by_txt GRPC_SHADOW_X509_NAME_add_entry_by_txt
+#define X509_NAME_cmp GRPC_SHADOW_X509_NAME_cmp
+#define X509_NAME_delete_entry GRPC_SHADOW_X509_NAME_delete_entry
+#define X509_NAME_digest GRPC_SHADOW_X509_NAME_digest
+#define X509_NAME_dup GRPC_SHADOW_X509_NAME_dup
+#define X509_NAME_ENTRIES_it GRPC_SHADOW_X509_NAME_ENTRIES_it
+#define X509_NAME_entry_count GRPC_SHADOW_X509_NAME_entry_count
+#define X509_NAME_ENTRY_create_by_NID GRPC_SHADOW_X509_NAME_ENTRY_create_by_NID
+#define X509_NAME_ENTRY_create_by_OBJ GRPC_SHADOW_X509_NAME_ENTRY_create_by_OBJ
+#define X509_NAME_ENTRY_create_by_txt GRPC_SHADOW_X509_NAME_ENTRY_create_by_txt
+#define X509_NAME_ENTRY_dup GRPC_SHADOW_X509_NAME_ENTRY_dup
+#define X509_NAME_ENTRY_free GRPC_SHADOW_X509_NAME_ENTRY_free
+#define X509_NAME_ENTRY_get_data GRPC_SHADOW_X509_NAME_ENTRY_get_data
+#define X509_NAME_ENTRY_get_object GRPC_SHADOW_X509_NAME_ENTRY_get_object
+#define X509_NAME_ENTRY_it GRPC_SHADOW_X509_NAME_ENTRY_it
+#define X509_NAME_ENTRY_new GRPC_SHADOW_X509_NAME_ENTRY_new
+#define X509_NAME_ENTRY_set GRPC_SHADOW_X509_NAME_ENTRY_set
+#define X509_NAME_ENTRY_set_data GRPC_SHADOW_X509_NAME_ENTRY_set_data
+#define X509_NAME_ENTRY_set_object GRPC_SHADOW_X509_NAME_ENTRY_set_object
+#define X509_NAME_free GRPC_SHADOW_X509_NAME_free
+#define X509_NAME_get0_der GRPC_SHADOW_X509_NAME_get0_der
+#define X509_NAME_get_entry GRPC_SHADOW_X509_NAME_get_entry
+#define X509_NAME_get_index_by_NID GRPC_SHADOW_X509_NAME_get_index_by_NID
+#define X509_NAME_get_index_by_OBJ GRPC_SHADOW_X509_NAME_get_index_by_OBJ
+#define X509_NAME_get_text_by_NID GRPC_SHADOW_X509_NAME_get_text_by_NID
+#define X509_NAME_get_text_by_OBJ GRPC_SHADOW_X509_NAME_get_text_by_OBJ
+#define X509_NAME_hash GRPC_SHADOW_X509_NAME_hash
+#define X509_NAME_hash_old GRPC_SHADOW_X509_NAME_hash_old
+#define X509_NAME_INTERNAL_it GRPC_SHADOW_X509_NAME_INTERNAL_it
+#define X509_NAME_it GRPC_SHADOW_X509_NAME_it
+#define X509_NAME_new GRPC_SHADOW_X509_NAME_new
+#define X509_NAME_oneline GRPC_SHADOW_X509_NAME_oneline
+#define X509_NAME_print GRPC_SHADOW_X509_NAME_print
+#define X509_NAME_print_ex GRPC_SHADOW_X509_NAME_print_ex
+#define X509_NAME_print_ex_fp GRPC_SHADOW_X509_NAME_print_ex_fp
+#define X509_NAME_set GRPC_SHADOW_X509_NAME_set
+#define X509_new GRPC_SHADOW_X509_new
+#define X509_OBJECT_free_contents GRPC_SHADOW_X509_OBJECT_free_contents
+#define X509_OBJECT_get0_X509 GRPC_SHADOW_X509_OBJECT_get0_X509
+#define X509_OBJECT_get_type GRPC_SHADOW_X509_OBJECT_get_type
+#define X509_OBJECT_idx_by_subject GRPC_SHADOW_X509_OBJECT_idx_by_subject
+#define X509_OBJECT_retrieve_by_subject GRPC_SHADOW_X509_OBJECT_retrieve_by_subject
+#define X509_OBJECT_retrieve_match GRPC_SHADOW_X509_OBJECT_retrieve_match
+#define X509_OBJECT_up_ref_count GRPC_SHADOW_X509_OBJECT_up_ref_count
+#define X509_ocspid_print GRPC_SHADOW_X509_ocspid_print
+#define X509_parse_from_buffer GRPC_SHADOW_X509_parse_from_buffer
+#define X509_PKEY_free GRPC_SHADOW_X509_PKEY_free
+#define X509_PKEY_new GRPC_SHADOW_X509_PKEY_new
+#define X509_policy_check GRPC_SHADOW_X509_policy_check
+#define X509_policy_level_get0_node GRPC_SHADOW_X509_policy_level_get0_node
+#define X509_policy_level_node_count GRPC_SHADOW_X509_policy_level_node_count
+#define X509_policy_node_get0_parent GRPC_SHADOW_X509_policy_node_get0_parent
+#define X509_policy_node_get0_policy GRPC_SHADOW_X509_policy_node_get0_policy
+#define X509_policy_node_get0_qualifiers GRPC_SHADOW_X509_policy_node_get0_qualifiers
+#define X509_POLICY_NODE_print GRPC_SHADOW_X509_POLICY_NODE_print
+#define X509_policy_tree_free GRPC_SHADOW_X509_policy_tree_free
+#define X509_policy_tree_get0_level GRPC_SHADOW_X509_policy_tree_get0_level
+#define X509_policy_tree_get0_policies GRPC_SHADOW_X509_policy_tree_get0_policies
+#define X509_policy_tree_get0_user_policies GRPC_SHADOW_X509_policy_tree_get0_user_policies
+#define X509_policy_tree_level_count GRPC_SHADOW_X509_policy_tree_level_count
+#define X509_print GRPC_SHADOW_X509_print
+#define X509_print_ex GRPC_SHADOW_X509_print_ex
+#define X509_print_ex_fp GRPC_SHADOW_X509_print_ex_fp
+#define X509_print_fp GRPC_SHADOW_X509_print_fp
+#define x509_print_rsa_pss_params GRPC_SHADOW_x509_print_rsa_pss_params
+#define X509_pubkey_digest GRPC_SHADOW_X509_pubkey_digest
+#define X509_PUBKEY_free GRPC_SHADOW_X509_PUBKEY_free
+#define X509_PUBKEY_get GRPC_SHADOW_X509_PUBKEY_get
+#define X509_PUBKEY_get0_param GRPC_SHADOW_X509_PUBKEY_get0_param
+#define X509_PUBKEY_it GRPC_SHADOW_X509_PUBKEY_it
+#define X509_PUBKEY_new GRPC_SHADOW_X509_PUBKEY_new
+#define X509_PUBKEY_set GRPC_SHADOW_X509_PUBKEY_set
+#define X509_PUBKEY_set0_param GRPC_SHADOW_X509_PUBKEY_set0_param
+#define X509_PURPOSE_add GRPC_SHADOW_X509_PURPOSE_add
+#define X509_PURPOSE_cleanup GRPC_SHADOW_X509_PURPOSE_cleanup
+#define X509_PURPOSE_get0 GRPC_SHADOW_X509_PURPOSE_get0
+#define X509_PURPOSE_get0_name GRPC_SHADOW_X509_PURPOSE_get0_name
+#define X509_PURPOSE_get0_sname GRPC_SHADOW_X509_PURPOSE_get0_sname
+#define X509_PURPOSE_get_by_id GRPC_SHADOW_X509_PURPOSE_get_by_id
+#define X509_PURPOSE_get_by_sname GRPC_SHADOW_X509_PURPOSE_get_by_sname
+#define X509_PURPOSE_get_count GRPC_SHADOW_X509_PURPOSE_get_count
+#define X509_PURPOSE_get_id GRPC_SHADOW_X509_PURPOSE_get_id
+#define X509_PURPOSE_get_trust GRPC_SHADOW_X509_PURPOSE_get_trust
+#define X509_PURPOSE_set GRPC_SHADOW_X509_PURPOSE_set
+#define X509_reject_clear GRPC_SHADOW_X509_reject_clear
+#define X509_REQ_add1_attr GRPC_SHADOW_X509_REQ_add1_attr
+#define X509_REQ_add1_attr_by_NID GRPC_SHADOW_X509_REQ_add1_attr_by_NID
+#define X509_REQ_add1_attr_by_OBJ GRPC_SHADOW_X509_REQ_add1_attr_by_OBJ
+#define X509_REQ_add1_attr_by_txt GRPC_SHADOW_X509_REQ_add1_attr_by_txt
+#define X509_REQ_add_extensions GRPC_SHADOW_X509_REQ_add_extensions
+#define X509_REQ_add_extensions_nid GRPC_SHADOW_X509_REQ_add_extensions_nid
+#define X509_REQ_check_private_key GRPC_SHADOW_X509_REQ_check_private_key
+#define X509_REQ_delete_attr GRPC_SHADOW_X509_REQ_delete_attr
+#define X509_REQ_digest GRPC_SHADOW_X509_REQ_digest
+#define X509_REQ_dup GRPC_SHADOW_X509_REQ_dup
+#define X509_REQ_extension_nid GRPC_SHADOW_X509_REQ_extension_nid
+#define X509_REQ_free GRPC_SHADOW_X509_REQ_free
+#define X509_REQ_get0_signature GRPC_SHADOW_X509_REQ_get0_signature
+#define X509_REQ_get1_email GRPC_SHADOW_X509_REQ_get1_email
+#define X509_REQ_get_attr GRPC_SHADOW_X509_REQ_get_attr
+#define X509_REQ_get_attr_by_NID GRPC_SHADOW_X509_REQ_get_attr_by_NID
+#define X509_REQ_get_attr_by_OBJ GRPC_SHADOW_X509_REQ_get_attr_by_OBJ
+#define X509_REQ_get_attr_count GRPC_SHADOW_X509_REQ_get_attr_count
+#define X509_REQ_get_extension_nids GRPC_SHADOW_X509_REQ_get_extension_nids
+#define X509_REQ_get_extensions GRPC_SHADOW_X509_REQ_get_extensions
+#define X509_REQ_get_pubkey GRPC_SHADOW_X509_REQ_get_pubkey
+#define X509_REQ_get_signature_nid GRPC_SHADOW_X509_REQ_get_signature_nid
+#define X509_REQ_INFO_free GRPC_SHADOW_X509_REQ_INFO_free
+#define X509_REQ_INFO_it GRPC_SHADOW_X509_REQ_INFO_it
+#define X509_REQ_INFO_new GRPC_SHADOW_X509_REQ_INFO_new
+#define X509_REQ_it GRPC_SHADOW_X509_REQ_it
+#define X509_REQ_new GRPC_SHADOW_X509_REQ_new
+#define X509_REQ_print GRPC_SHADOW_X509_REQ_print
+#define X509_REQ_print_ex GRPC_SHADOW_X509_REQ_print_ex
+#define X509_REQ_print_fp GRPC_SHADOW_X509_REQ_print_fp
+#define X509_REQ_set_extension_nids GRPC_SHADOW_X509_REQ_set_extension_nids
+#define X509_REQ_set_pubkey GRPC_SHADOW_X509_REQ_set_pubkey
+#define X509_REQ_set_subject_name GRPC_SHADOW_X509_REQ_set_subject_name
+#define X509_REQ_set_version GRPC_SHADOW_X509_REQ_set_version
+#define X509_REQ_sign GRPC_SHADOW_X509_REQ_sign
+#define X509_REQ_sign_ctx GRPC_SHADOW_X509_REQ_sign_ctx
+#define X509_REQ_to_X509 GRPC_SHADOW_X509_REQ_to_X509
+#define X509_REQ_verify GRPC_SHADOW_X509_REQ_verify
+#define X509_REVOKED_add1_ext_i2d GRPC_SHADOW_X509_REVOKED_add1_ext_i2d
+#define X509_REVOKED_add_ext GRPC_SHADOW_X509_REVOKED_add_ext
+#define X509_REVOKED_delete_ext GRPC_SHADOW_X509_REVOKED_delete_ext
+#define X509_REVOKED_dup GRPC_SHADOW_X509_REVOKED_dup
+#define X509_REVOKED_free GRPC_SHADOW_X509_REVOKED_free
+#define X509_REVOKED_get0_revocationDate GRPC_SHADOW_X509_REVOKED_get0_revocationDate
+#define X509_REVOKED_get0_serialNumber GRPC_SHADOW_X509_REVOKED_get0_serialNumber
+#define X509_REVOKED_get_ext GRPC_SHADOW_X509_REVOKED_get_ext
+#define X509_REVOKED_get_ext_by_critical GRPC_SHADOW_X509_REVOKED_get_ext_by_critical
+#define X509_REVOKED_get_ext_by_NID GRPC_SHADOW_X509_REVOKED_get_ext_by_NID
+#define X509_REVOKED_get_ext_by_OBJ GRPC_SHADOW_X509_REVOKED_get_ext_by_OBJ
+#define X509_REVOKED_get_ext_count GRPC_SHADOW_X509_REVOKED_get_ext_count
+#define X509_REVOKED_get_ext_d2i GRPC_SHADOW_X509_REVOKED_get_ext_d2i
+#define X509_REVOKED_it GRPC_SHADOW_X509_REVOKED_it
+#define X509_REVOKED_new GRPC_SHADOW_X509_REVOKED_new
+#define X509_REVOKED_set_revocationDate GRPC_SHADOW_X509_REVOKED_set_revocationDate
+#define X509_REVOKED_set_serialNumber GRPC_SHADOW_X509_REVOKED_set_serialNumber
+#define x509_rsa_ctx_to_pss GRPC_SHADOW_x509_rsa_ctx_to_pss
+#define x509_rsa_pss_to_ctx GRPC_SHADOW_x509_rsa_pss_to_ctx
+#define X509_set_ex_data GRPC_SHADOW_X509_set_ex_data
+#define X509_set_issuer_name GRPC_SHADOW_X509_set_issuer_name
+#define X509_set_notAfter GRPC_SHADOW_X509_set_notAfter
+#define X509_set_notBefore GRPC_SHADOW_X509_set_notBefore
+#define X509_set_pubkey GRPC_SHADOW_X509_set_pubkey
+#define X509_set_serialNumber GRPC_SHADOW_X509_set_serialNumber
+#define X509_set_subject_name GRPC_SHADOW_X509_set_subject_name
+#define X509_set_version GRPC_SHADOW_X509_set_version
+#define X509_SIG_free GRPC_SHADOW_X509_SIG_free
+#define X509_SIG_it GRPC_SHADOW_X509_SIG_it
+#define X509_sign GRPC_SHADOW_X509_sign
+#define X509_signature_dump GRPC_SHADOW_X509_signature_dump
+#define X509_signature_print GRPC_SHADOW_X509_signature_print
+#define X509_sign_ctx GRPC_SHADOW_X509_sign_ctx
+#define X509_SIG_new GRPC_SHADOW_X509_SIG_new
+#define X509_STORE_add_cert GRPC_SHADOW_X509_STORE_add_cert
+#define X509_STORE_add_crl GRPC_SHADOW_X509_STORE_add_crl
+#define X509_STORE_add_lookup GRPC_SHADOW_X509_STORE_add_lookup
+#define X509_STORE_CTX_cleanup GRPC_SHADOW_X509_STORE_CTX_cleanup
+#define X509_STORE_CTX_free GRPC_SHADOW_X509_STORE_CTX_free
+#define X509_STORE_CTX_get0_cert GRPC_SHADOW_X509_STORE_CTX_get0_cert
+#define X509_STORE_CTX_get0_current_crl GRPC_SHADOW_X509_STORE_CTX_get0_current_crl
+#define X509_STORE_CTX_get0_current_issuer GRPC_SHADOW_X509_STORE_CTX_get0_current_issuer
+#define X509_STORE_CTX_get0_param GRPC_SHADOW_X509_STORE_CTX_get0_param
+#define X509_STORE_CTX_get0_parent_ctx GRPC_SHADOW_X509_STORE_CTX_get0_parent_ctx
+#define X509_STORE_CTX_get0_policy_tree GRPC_SHADOW_X509_STORE_CTX_get0_policy_tree
+#define X509_STORE_CTX_get0_store GRPC_SHADOW_X509_STORE_CTX_get0_store
+#define X509_STORE_CTX_get0_untrusted GRPC_SHADOW_X509_STORE_CTX_get0_untrusted
+#define X509_STORE_CTX_get1_chain GRPC_SHADOW_X509_STORE_CTX_get1_chain
+#define X509_STORE_CTX_get1_issuer GRPC_SHADOW_X509_STORE_CTX_get1_issuer
+#define X509_STORE_CTX_get_chain GRPC_SHADOW_X509_STORE_CTX_get_chain
+#define X509_STORE_CTX_get_current_cert GRPC_SHADOW_X509_STORE_CTX_get_current_cert
+#define X509_STORE_CTX_get_error GRPC_SHADOW_X509_STORE_CTX_get_error
+#define X509_STORE_CTX_get_error_depth GRPC_SHADOW_X509_STORE_CTX_get_error_depth
+#define X509_STORE_CTX_get_ex_data GRPC_SHADOW_X509_STORE_CTX_get_ex_data
+#define X509_STORE_CTX_get_ex_new_index GRPC_SHADOW_X509_STORE_CTX_get_ex_new_index
+#define X509_STORE_CTX_get_explicit_policy GRPC_SHADOW_X509_STORE_CTX_get_explicit_policy
+#define X509_STORE_CTX_init GRPC_SHADOW_X509_STORE_CTX_init
+#define X509_STORE_CTX_new GRPC_SHADOW_X509_STORE_CTX_new
+#define X509_STORE_CTX_purpose_inherit GRPC_SHADOW_X509_STORE_CTX_purpose_inherit
+#define X509_STORE_CTX_set0_crls GRPC_SHADOW_X509_STORE_CTX_set0_crls
+#define X509_STORE_CTX_set0_param GRPC_SHADOW_X509_STORE_CTX_set0_param
+#define X509_STORE_CTX_set_cert GRPC_SHADOW_X509_STORE_CTX_set_cert
+#define X509_STORE_CTX_set_chain GRPC_SHADOW_X509_STORE_CTX_set_chain
+#define X509_STORE_CTX_set_default GRPC_SHADOW_X509_STORE_CTX_set_default
+#define X509_STORE_CTX_set_depth GRPC_SHADOW_X509_STORE_CTX_set_depth
+#define X509_STORE_CTX_set_error GRPC_SHADOW_X509_STORE_CTX_set_error
+#define X509_STORE_CTX_set_ex_data GRPC_SHADOW_X509_STORE_CTX_set_ex_data
+#define X509_STORE_CTX_set_flags GRPC_SHADOW_X509_STORE_CTX_set_flags
+#define X509_STORE_CTX_set_purpose GRPC_SHADOW_X509_STORE_CTX_set_purpose
+#define X509_STORE_CTX_set_time GRPC_SHADOW_X509_STORE_CTX_set_time
+#define X509_STORE_CTX_set_trust GRPC_SHADOW_X509_STORE_CTX_set_trust
+#define X509_STORE_CTX_set_verify_cb GRPC_SHADOW_X509_STORE_CTX_set_verify_cb
+#define X509_STORE_CTX_trusted_stack GRPC_SHADOW_X509_STORE_CTX_trusted_stack
+#define X509_STORE_CTX_zero GRPC_SHADOW_X509_STORE_CTX_zero
+#define X509_STORE_free GRPC_SHADOW_X509_STORE_free
+#define X509_STORE_get0_objects GRPC_SHADOW_X509_STORE_get0_objects
+#define X509_STORE_get0_param GRPC_SHADOW_X509_STORE_get0_param
+#define X509_STORE_get1_certs GRPC_SHADOW_X509_STORE_get1_certs
+#define X509_STORE_get1_crls GRPC_SHADOW_X509_STORE_get1_crls
+#define X509_STORE_get_by_subject GRPC_SHADOW_X509_STORE_get_by_subject
+#define X509_STORE_get_cert_crl GRPC_SHADOW_X509_STORE_get_cert_crl
+#define X509_STORE_get_check_crl GRPC_SHADOW_X509_STORE_get_check_crl
+#define X509_STORE_get_check_issued GRPC_SHADOW_X509_STORE_get_check_issued
+#define X509_STORE_get_check_revocation GRPC_SHADOW_X509_STORE_get_check_revocation
+#define X509_STORE_get_cleanup GRPC_SHADOW_X509_STORE_get_cleanup
+#define X509_STORE_get_get_crl GRPC_SHADOW_X509_STORE_get_get_crl
+#define X509_STORE_get_get_issuer GRPC_SHADOW_X509_STORE_get_get_issuer
+#define X509_STORE_get_lookup_certs GRPC_SHADOW_X509_STORE_get_lookup_certs
+#define X509_STORE_get_lookup_crls GRPC_SHADOW_X509_STORE_get_lookup_crls
+#define X509_STORE_get_verify GRPC_SHADOW_X509_STORE_get_verify
+#define X509_STORE_get_verify_cb GRPC_SHADOW_X509_STORE_get_verify_cb
+#define X509_STORE_load_locations GRPC_SHADOW_X509_STORE_load_locations
+#define X509_STORE_new GRPC_SHADOW_X509_STORE_new
+#define X509_STORE_set0_additional_untrusted GRPC_SHADOW_X509_STORE_set0_additional_untrusted
+#define X509_STORE_set1_param GRPC_SHADOW_X509_STORE_set1_param
+#define X509_STORE_set_cert_crl GRPC_SHADOW_X509_STORE_set_cert_crl
+#define X509_STORE_set_check_crl GRPC_SHADOW_X509_STORE_set_check_crl
+#define X509_STORE_set_check_issued GRPC_SHADOW_X509_STORE_set_check_issued
+#define X509_STORE_set_check_revocation GRPC_SHADOW_X509_STORE_set_check_revocation
+#define X509_STORE_set_cleanup GRPC_SHADOW_X509_STORE_set_cleanup
+#define X509_STORE_set_default_paths GRPC_SHADOW_X509_STORE_set_default_paths
+#define X509_STORE_set_depth GRPC_SHADOW_X509_STORE_set_depth
+#define X509_STORE_set_flags GRPC_SHADOW_X509_STORE_set_flags
+#define X509_STORE_set_get_crl GRPC_SHADOW_X509_STORE_set_get_crl
+#define X509_STORE_set_get_issuer GRPC_SHADOW_X509_STORE_set_get_issuer
+#define X509_STORE_set_lookup_certs GRPC_SHADOW_X509_STORE_set_lookup_certs
+#define X509_STORE_set_lookup_crls GRPC_SHADOW_X509_STORE_set_lookup_crls
+#define X509_STORE_set_purpose GRPC_SHADOW_X509_STORE_set_purpose
+#define X509_STORE_set_trust GRPC_SHADOW_X509_STORE_set_trust
+#define X509_STORE_set_verify GRPC_SHADOW_X509_STORE_set_verify
+#define X509_STORE_set_verify_cb GRPC_SHADOW_X509_STORE_set_verify_cb
+#define X509_STORE_up_ref GRPC_SHADOW_X509_STORE_up_ref
+#define X509_subject_name_cmp GRPC_SHADOW_X509_subject_name_cmp
+#define X509_subject_name_hash GRPC_SHADOW_X509_subject_name_hash
+#define X509_subject_name_hash_old GRPC_SHADOW_X509_subject_name_hash_old
+#define X509_supported_extension GRPC_SHADOW_X509_supported_extension
+#define X509_time_adj GRPC_SHADOW_X509_time_adj
+#define X509_time_adj_ex GRPC_SHADOW_X509_time_adj_ex
+#define X509_to_X509_REQ GRPC_SHADOW_X509_to_X509_REQ
+#define X509_TRUST_add GRPC_SHADOW_X509_TRUST_add
+#define X509_TRUST_cleanup GRPC_SHADOW_X509_TRUST_cleanup
+#define X509_trust_clear GRPC_SHADOW_X509_trust_clear
+#define X509_TRUST_get0 GRPC_SHADOW_X509_TRUST_get0
+#define X509_TRUST_get0_name GRPC_SHADOW_X509_TRUST_get0_name
+#define X509_TRUST_get_by_id GRPC_SHADOW_X509_TRUST_get_by_id
+#define X509_TRUST_get_count GRPC_SHADOW_X509_TRUST_get_count
+#define X509_TRUST_get_flags GRPC_SHADOW_X509_TRUST_get_flags
+#define X509_TRUST_get_trust GRPC_SHADOW_X509_TRUST_get_trust
+#define X509_TRUST_set GRPC_SHADOW_X509_TRUST_set
+#define X509_TRUST_set_default GRPC_SHADOW_X509_TRUST_set_default
+#define X509_up_ref GRPC_SHADOW_X509_up_ref
+#define X509V3_add1_i2d GRPC_SHADOW_X509V3_add1_i2d
+#define X509v3_add_ext GRPC_SHADOW_X509v3_add_ext
+#define X509V3_add_standard_extensions GRPC_SHADOW_X509V3_add_standard_extensions
+#define X509V3_add_value GRPC_SHADOW_X509V3_add_value
+#define X509V3_add_value_bool GRPC_SHADOW_X509V3_add_value_bool
+#define X509V3_add_value_bool_nf GRPC_SHADOW_X509V3_add_value_bool_nf
+#define X509V3_add_value_int GRPC_SHADOW_X509V3_add_value_int
+#define X509V3_add_value_uchar GRPC_SHADOW_X509V3_add_value_uchar
+#define x509v3_bytes_to_hex GRPC_SHADOW_x509v3_bytes_to_hex
+#define X509V3_conf_free GRPC_SHADOW_X509V3_conf_free
+#define X509v3_delete_ext GRPC_SHADOW_X509v3_delete_ext
+#define X509V3_EXT_add GRPC_SHADOW_X509V3_EXT_add
+#define X509V3_EXT_add_alias GRPC_SHADOW_X509V3_EXT_add_alias
+#define X509V3_EXT_add_list GRPC_SHADOW_X509V3_EXT_add_list
+#define X509V3_EXT_add_nconf GRPC_SHADOW_X509V3_EXT_add_nconf
+#define X509V3_EXT_add_nconf_sk GRPC_SHADOW_X509V3_EXT_add_nconf_sk
+#define X509V3_EXT_cleanup GRPC_SHADOW_X509V3_EXT_cleanup
+#define X509V3_EXT_CRL_add_nconf GRPC_SHADOW_X509V3_EXT_CRL_add_nconf
+#define X509V3_EXT_d2i GRPC_SHADOW_X509V3_EXT_d2i
+#define X509V3_extensions_print GRPC_SHADOW_X509V3_extensions_print
+#define X509V3_EXT_free GRPC_SHADOW_X509V3_EXT_free
+#define X509V3_EXT_get GRPC_SHADOW_X509V3_EXT_get
+#define X509V3_EXT_get_nid GRPC_SHADOW_X509V3_EXT_get_nid
+#define X509V3_EXT_i2d GRPC_SHADOW_X509V3_EXT_i2d
+#define X509V3_EXT_nconf GRPC_SHADOW_X509V3_EXT_nconf
+#define X509V3_EXT_nconf_nid GRPC_SHADOW_X509V3_EXT_nconf_nid
+#define X509V3_EXT_print GRPC_SHADOW_X509V3_EXT_print
+#define X509V3_EXT_print_fp GRPC_SHADOW_X509V3_EXT_print_fp
+#define X509V3_EXT_REQ_add_nconf GRPC_SHADOW_X509V3_EXT_REQ_add_nconf
+#define X509V3_EXT_val_prn GRPC_SHADOW_X509V3_EXT_val_prn
+#define X509V3_get_d2i GRPC_SHADOW_X509V3_get_d2i
+#define X509v3_get_ext GRPC_SHADOW_X509v3_get_ext
+#define X509v3_get_ext_by_critical GRPC_SHADOW_X509v3_get_ext_by_critical
+#define X509v3_get_ext_by_NID GRPC_SHADOW_X509v3_get_ext_by_NID
+#define X509v3_get_ext_by_OBJ GRPC_SHADOW_X509v3_get_ext_by_OBJ
+#define X509v3_get_ext_count GRPC_SHADOW_X509v3_get_ext_count
+#define X509V3_get_section GRPC_SHADOW_X509V3_get_section
+#define X509V3_get_string GRPC_SHADOW_X509V3_get_string
+#define X509V3_get_value_bool GRPC_SHADOW_X509V3_get_value_bool
+#define X509V3_get_value_int GRPC_SHADOW_X509V3_get_value_int
+#define x509v3_hex_to_bytes GRPC_SHADOW_x509v3_hex_to_bytes
+#define x509v3_looks_like_dns_name GRPC_SHADOW_x509v3_looks_like_dns_name
+#define x509v3_name_cmp GRPC_SHADOW_x509v3_name_cmp
+#define X509V3_NAME_from_section GRPC_SHADOW_X509V3_NAME_from_section
+#define X509V3_parse_list GRPC_SHADOW_X509V3_parse_list
+#define X509V3_section_free GRPC_SHADOW_X509V3_section_free
+#define X509V3_set_ctx GRPC_SHADOW_X509V3_set_ctx
+#define X509V3_set_nconf GRPC_SHADOW_X509V3_set_nconf
+#define X509V3_string_free GRPC_SHADOW_X509V3_string_free
+#define X509_VAL_free GRPC_SHADOW_X509_VAL_free
+#define X509_VAL_it GRPC_SHADOW_X509_VAL_it
+#define X509_VAL_new GRPC_SHADOW_X509_VAL_new
+#define X509_verify GRPC_SHADOW_X509_verify
+#define X509_verify_cert GRPC_SHADOW_X509_verify_cert
+#define X509_verify_cert_error_string GRPC_SHADOW_X509_verify_cert_error_string
+#define X509_VERIFY_PARAM_add0_policy GRPC_SHADOW_X509_VERIFY_PARAM_add0_policy
+#define X509_VERIFY_PARAM_add0_table GRPC_SHADOW_X509_VERIFY_PARAM_add0_table
+#define X509_VERIFY_PARAM_add1_host GRPC_SHADOW_X509_VERIFY_PARAM_add1_host
+#define X509_VERIFY_PARAM_clear_flags GRPC_SHADOW_X509_VERIFY_PARAM_clear_flags
+#define X509_VERIFY_PARAM_free GRPC_SHADOW_X509_VERIFY_PARAM_free
+#define X509_VERIFY_PARAM_get0 GRPC_SHADOW_X509_VERIFY_PARAM_get0
+#define X509_VERIFY_PARAM_get0_name GRPC_SHADOW_X509_VERIFY_PARAM_get0_name
+#define X509_VERIFY_PARAM_get0_peername GRPC_SHADOW_X509_VERIFY_PARAM_get0_peername
+#define X509_VERIFY_PARAM_get_count GRPC_SHADOW_X509_VERIFY_PARAM_get_count
+#define X509_VERIFY_PARAM_get_depth GRPC_SHADOW_X509_VERIFY_PARAM_get_depth
+#define X509_VERIFY_PARAM_get_flags GRPC_SHADOW_X509_VERIFY_PARAM_get_flags
+#define X509_VERIFY_PARAM_inherit GRPC_SHADOW_X509_VERIFY_PARAM_inherit
+#define X509_VERIFY_PARAM_lookup GRPC_SHADOW_X509_VERIFY_PARAM_lookup
+#define X509_VERIFY_PARAM_new GRPC_SHADOW_X509_VERIFY_PARAM_new
+#define X509_VERIFY_PARAM_set1 GRPC_SHADOW_X509_VERIFY_PARAM_set1
+#define X509_VERIFY_PARAM_set1_email GRPC_SHADOW_X509_VERIFY_PARAM_set1_email
+#define X509_VERIFY_PARAM_set1_host GRPC_SHADOW_X509_VERIFY_PARAM_set1_host
+#define X509_VERIFY_PARAM_set1_ip GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip
+#define X509_VERIFY_PARAM_set1_ip_asc GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip_asc
+#define X509_VERIFY_PARAM_set1_name GRPC_SHADOW_X509_VERIFY_PARAM_set1_name
+#define X509_VERIFY_PARAM_set1_policies GRPC_SHADOW_X509_VERIFY_PARAM_set1_policies
+#define X509_VERIFY_PARAM_set_depth GRPC_SHADOW_X509_VERIFY_PARAM_set_depth
+#define X509_VERIFY_PARAM_set_flags GRPC_SHADOW_X509_VERIFY_PARAM_set_flags
+#define X509_VERIFY_PARAM_set_hostflags GRPC_SHADOW_X509_VERIFY_PARAM_set_hostflags
+#define X509_VERIFY_PARAM_set_purpose GRPC_SHADOW_X509_VERIFY_PARAM_set_purpose
+#define X509_VERIFY_PARAM_set_time GRPC_SHADOW_X509_VERIFY_PARAM_set_time
+#define X509_VERIFY_PARAM_set_trust GRPC_SHADOW_X509_VERIFY_PARAM_set_trust
+#define X509_VERIFY_PARAM_table_cleanup GRPC_SHADOW_X509_VERIFY_PARAM_table_cleanup
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.debug.xcconfig
new file mode 100644
index 0000000..31117a2
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.debug.xcconfig	
@@ -0,0 +1,11 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/BoringSSL-GRPC
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.modulemap b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.modulemap
new file mode 100644
index 0000000..283008b
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.modulemap	
@@ -0,0 +1,6 @@
+  framework module openssl {
+    umbrella header "umbrella.h"
+    textual header "arm_arch.h"
+    export *
+    module * { export * }
+  }
diff --git a/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.release.xcconfig
new file mode 100644
index 0000000..31117a2
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/BoringSSL-GRPC/BoringSSL-GRPC.release.xcconfig	
@@ -0,0 +1,11 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/BoringSSL-GRPC
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.debug.xcconfig
new file mode 100644
index 0000000..8337d43
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.debug.xcconfig	
@@ -0,0 +1,13 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/Firebase
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/Firebase" "${PODS_ROOT}/Headers/Public"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/Firebase
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.release.xcconfig
new file mode 100644
index 0000000..8337d43
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Firebase/Firebase.release.xcconfig	
@@ -0,0 +1,13 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/Firebase
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/Firebase" "${PODS_ROOT}/Headers/Public"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/Firebase
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-Info.plist b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-Info.plist
new file mode 100644
index 0000000..d3f65aa
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>8.8.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-dummy.m b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-dummy.m
new file mode 100644
index 0000000..63dc459
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_FirebaseAuth : NSObject
+@end
+@implementation PodsDummy_FirebaseAuth
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-umbrella.h b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-umbrella.h
new file mode 100644
index 0000000..6a6a150
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth-umbrella.h	
@@ -0,0 +1,49 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "FIRActionCodeSettings.h"
+#import "FIRAdditionalUserInfo.h"
+#import "FIRAuth.h"
+#import "FIRAuthAPNSTokenType.h"
+#import "FIRAuthCredential.h"
+#import "FIRAuthDataResult.h"
+#import "FIRAuthErrors.h"
+#import "FIRAuthSettings.h"
+#import "FIRAuthTokenResult.h"
+#import "FIRAuthUIDelegate.h"
+#import "FirebaseAuth.h"
+#import "FIREmailAuthProvider.h"
+#import "FIRFacebookAuthProvider.h"
+#import "FIRFederatedAuthProvider.h"
+#import "FIRGameCenterAuthProvider.h"
+#import "FIRGitHubAuthProvider.h"
+#import "FIRGoogleAuthProvider.h"
+#import "FIRMultiFactor.h"
+#import "FIRMultiFactorAssertion.h"
+#import "FIRMultiFactorInfo.h"
+#import "FIRMultiFactorResolver.h"
+#import "FIRMultiFactorSession.h"
+#import "FIROAuthCredential.h"
+#import "FIROAuthProvider.h"
+#import "FIRPhoneAuthCredential.h"
+#import "FIRPhoneAuthProvider.h"
+#import "FIRPhoneMultiFactorAssertion.h"
+#import "FIRPhoneMultiFactorGenerator.h"
+#import "FIRPhoneMultiFactorInfo.h"
+#import "FIRTwitterAuthProvider.h"
+#import "FIRUser.h"
+#import "FIRUserInfo.h"
+#import "FIRUserMetadata.h"
+
+FOUNDATION_EXPORT double FirebaseAuthVersionNumber;
+FOUNDATION_EXPORT const unsigned char FirebaseAuthVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.debug.xcconfig
new file mode 100644
index 0000000..3a9bf6d
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.debug.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -framework "FirebaseCore" -framework "Foundation" -framework "GTMSessionFetcher" -framework "GoogleUtilities" -framework "SafariServices" -framework "Security" -framework "SystemConfiguration" -framework "UIKit"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseAuth
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.modulemap b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.modulemap
new file mode 100644
index 0000000..7ee6c70
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.modulemap	
@@ -0,0 +1,6 @@
+framework module FirebaseAuth {
+  umbrella header "FirebaseAuth-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.release.xcconfig
new file mode 100644
index 0000000..3a9bf6d
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseAuth/FirebaseAuth.release.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -framework "FirebaseCore" -framework "Foundation" -framework "GTMSessionFetcher" -framework "GoogleUtilities" -framework "SafariServices" -framework "Security" -framework "SystemConfiguration" -framework "UIKit"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseAuth
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-Info.plist b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-Info.plist
new file mode 100644
index 0000000..d3f65aa
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>8.8.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-dummy.m b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-dummy.m
new file mode 100644
index 0000000..4f1eb27
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_FirebaseCore : NSObject
+@end
+@implementation PodsDummy_FirebaseCore
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-umbrella.h b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-umbrella.h
new file mode 100644
index 0000000..0f96d94
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore-umbrella.h	
@@ -0,0 +1,22 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "FIRApp.h"
+#import "FIRConfiguration.h"
+#import "FirebaseCore.h"
+#import "FIRLoggerLevel.h"
+#import "FIROptions.h"
+#import "FIRVersion.h"
+
+FOUNDATION_EXPORT double FirebaseCoreVersionNumber;
+FOUNDATION_EXPORT const unsigned char FirebaseCoreVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.debug.xcconfig
new file mode 100644
index 0000000..8aaf0a0
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.debug.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 Firebase_VERSION=8.8.0
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_CFLAGS = $(inherited) -fno-autolink
+OTHER_LDFLAGS = $(inherited) -framework "FirebaseCoreDiagnostics" -framework "Foundation" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "UIKit"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseCore
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.modulemap b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.modulemap
new file mode 100644
index 0000000..4c38b87
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.modulemap	
@@ -0,0 +1,6 @@
+framework module FirebaseCore {
+  umbrella header "FirebaseCore-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.release.xcconfig
new file mode 100644
index 0000000..8aaf0a0
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCore/FirebaseCore.release.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 Firebase_VERSION=8.8.0
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_CFLAGS = $(inherited) -fno-autolink
+OTHER_LDFLAGS = $(inherited) -framework "FirebaseCoreDiagnostics" -framework "Foundation" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "UIKit"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseCore
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-Info.plist b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-Info.plist
new file mode 100644
index 0000000..d3f65aa
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>8.8.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-dummy.m b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-dummy.m
new file mode 100644
index 0000000..224d263
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_FirebaseCoreDiagnostics : NSObject
+@end
+@implementation PodsDummy_FirebaseCoreDiagnostics
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-umbrella.h b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-umbrella.h
new file mode 100644
index 0000000..a27569f
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics-umbrella.h	
@@ -0,0 +1,17 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "FIRCoreDiagnostics.h"
+
+FOUNDATION_EXPORT double FirebaseCoreDiagnosticsVersionNumber;
+FOUNDATION_EXPORT const unsigned char FirebaseCoreDiagnosticsVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.debug.xcconfig
new file mode 100644
index 0000000..e5b1e9a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.debug.xcconfig	
@@ -0,0 +1,17 @@
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+GCC_TREAT_WARNINGS_AS_ERRORS = YES
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -framework "CoreTelephony" -framework "Foundation" -framework "GoogleDataTransport" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseCoreDiagnostics
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.modulemap b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.modulemap
new file mode 100644
index 0000000..d9cad8b
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.modulemap	
@@ -0,0 +1,6 @@
+framework module FirebaseCoreDiagnostics {
+  umbrella header "FirebaseCoreDiagnostics-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.release.xcconfig
new file mode 100644
index 0000000..e5b1e9a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.release.xcconfig	
@@ -0,0 +1,17 @@
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+GCC_TREAT_WARNINGS_AS_ERRORS = YES
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -framework "CoreTelephony" -framework "Foundation" -framework "GoogleDataTransport" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseCoreDiagnostics
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-Info.plist b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-Info.plist
new file mode 100644
index 0000000..d3f65aa
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>8.8.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-dummy.m b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-dummy.m
new file mode 100644
index 0000000..42df0f9
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_FirebaseFirestore : NSObject
+@end
+@implementation PodsDummy_FirebaseFirestore
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-umbrella.h b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-umbrella.h
new file mode 100644
index 0000000..65da55b
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore-umbrella.h	
@@ -0,0 +1,36 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "FIRCollectionReference.h"
+#import "FIRDocumentChange.h"
+#import "FIRDocumentReference.h"
+#import "FIRDocumentSnapshot.h"
+#import "FirebaseFirestore.h"
+#import "FIRFieldPath.h"
+#import "FIRFieldValue.h"
+#import "FIRFirestore.h"
+#import "FIRFirestoreErrors.h"
+#import "FIRFirestoreSettings.h"
+#import "FIRFirestoreSource.h"
+#import "FIRGeoPoint.h"
+#import "FIRListenerRegistration.h"
+#import "FIRLoadBundleTask.h"
+#import "FIRQuery.h"
+#import "FIRQuerySnapshot.h"
+#import "FIRSnapshotMetadata.h"
+#import "FIRTimestamp.h"
+#import "FIRTransaction.h"
+#import "FIRWriteBatch.h"
+
+FOUNDATION_EXPORT double FirebaseFirestoreVersionNumber;
+FOUNDATION_EXPORT const unsigned char FirebaseFirestoreVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.debug.xcconfig
new file mode 100644
index 0000000..4aca175
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.debug.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_CXX_LANGUAGE_STANDARD = c++0x
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 FIRFirestore_VERSION=8.8.0 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}" "${PODS_TARGET_SRCROOT}/Firestore/Source/Public/FirebaseFirestore" "${PODS_ROOT}/nanopb" "${PODS_TARGET_SRCROOT}/Firestore/Protos/nanopb"
+OTHER_LDFLAGS = $(inherited) -l"c++" -framework "FirebaseCore" -framework "Foundation" -framework "SystemConfiguration" -framework "UIKit" -framework "absl" -framework "grpcpp" -framework "leveldb" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseFirestore
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.modulemap b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.modulemap
new file mode 100644
index 0000000..1713ae3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.modulemap	
@@ -0,0 +1,6 @@
+framework module FirebaseFirestore {
+  umbrella header "FirebaseFirestore-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.release.xcconfig
new file mode 100644
index 0000000..4aca175
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/FirebaseFirestore/FirebaseFirestore.release.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_CXX_LANGUAGE_STANDARD = c++0x
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 FIRFirestore_VERSION=8.8.0 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}" "${PODS_TARGET_SRCROOT}/Firestore/Source/Public/FirebaseFirestore" "${PODS_ROOT}/nanopb" "${PODS_TARGET_SRCROOT}/Firestore/Protos/nanopb"
+OTHER_LDFLAGS = $(inherited) -l"c++" -framework "FirebaseCore" -framework "Foundation" -framework "SystemConfiguration" -framework "UIKit" -framework "absl" -framework "grpcpp" -framework "leveldb" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseFirestore
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-Info.plist b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-Info.plist
new file mode 100644
index 0000000..fcedd03
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.7.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-dummy.m b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-dummy.m
new file mode 100644
index 0000000..13d68b3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_GTMSessionFetcher : NSObject
+@end
+@implementation PodsDummy_GTMSessionFetcher
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-prefix.pch b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-umbrella.h b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-umbrella.h
new file mode 100644
index 0000000..1c0b7b8
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher-umbrella.h	
@@ -0,0 +1,20 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "GTMSessionFetcher.h"
+#import "GTMSessionFetcherLogging.h"
+#import "GTMSessionFetcherService.h"
+#import "GTMSessionUploadFetcher.h"
+
+FOUNDATION_EXPORT double GTMSessionFetcherVersionNumber;
+FOUNDATION_EXPORT const unsigned char GTMSessionFetcherVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.debug.xcconfig
new file mode 100644
index 0000000..b1f7629
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.debug.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_LDFLAGS = $(inherited) -framework "Security"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GTMSessionFetcher
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.modulemap b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.modulemap
new file mode 100644
index 0000000..5121a4d
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.modulemap	
@@ -0,0 +1,6 @@
+framework module GTMSessionFetcher {
+  umbrella header "GTMSessionFetcher-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.release.xcconfig
new file mode 100644
index 0000000..b1f7629
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GTMSessionFetcher/GTMSessionFetcher.release.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_LDFLAGS = $(inherited) -framework "Security"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GTMSessionFetcher
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-Info.plist b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-Info.plist
new file mode 100644
index 0000000..4be429b
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>9.1.2</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-dummy.m b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-dummy.m
new file mode 100644
index 0000000..9a08ec3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_GoogleDataTransport : NSObject
+@end
+@implementation PodsDummy_GoogleDataTransport
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-umbrella.h b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-umbrella.h
new file mode 100644
index 0000000..53d9138
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport-umbrella.h	
@@ -0,0 +1,25 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "GDTCORClock.h"
+#import "GDTCORConsoleLogger.h"
+#import "GDTCOREndpoints.h"
+#import "GDTCOREvent.h"
+#import "GDTCOREventDataObject.h"
+#import "GDTCOREventTransformer.h"
+#import "GDTCORTargets.h"
+#import "GDTCORTransport.h"
+#import "GoogleDataTransport.h"
+
+FOUNDATION_EXPORT double GoogleDataTransportVersionNumber;
+FOUNDATION_EXPORT const unsigned char GoogleDataTransportVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.debug.xcconfig
new file mode 100644
index 0000000..656e7c2
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.debug.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1 GDTCOR_VERSION=9.1.2
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}/"
+OTHER_LDFLAGS = $(inherited) -l"z" -framework "CoreTelephony" -framework "FBLPromises" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GoogleDataTransport
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.modulemap b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.modulemap
new file mode 100644
index 0000000..8a67414
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.modulemap	
@@ -0,0 +1,6 @@
+framework module GoogleDataTransport {
+  umbrella header "GoogleDataTransport-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.release.xcconfig
new file mode 100644
index 0000000..656e7c2
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleDataTransport/GoogleDataTransport.release.xcconfig	
@@ -0,0 +1,16 @@
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1 GDTCOR_VERSION=9.1.2
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}/"
+OTHER_LDFLAGS = $(inherited) -l"z" -framework "CoreTelephony" -framework "FBLPromises" -framework "GoogleUtilities" -framework "Security" -framework "SystemConfiguration" -framework "nanopb"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GoogleDataTransport
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-Info.plist b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-Info.plist
new file mode 100644
index 0000000..98e56b3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>7.6.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-dummy.m b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-dummy.m
new file mode 100644
index 0000000..98ac4e9
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_GoogleUtilities : NSObject
+@end
+@implementation PodsDummy_GoogleUtilities
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-umbrella.h b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-umbrella.h
new file mode 100644
index 0000000..465644a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities-umbrella.h	
@@ -0,0 +1,38 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "GULAppDelegateSwizzler.h"
+#import "GULApplication.h"
+#import "GULSceneDelegateSwizzler.h"
+#import "GULAppEnvironmentUtil.h"
+#import "GULHeartbeatDateStorable.h"
+#import "GULHeartbeatDateStorage.h"
+#import "GULHeartbeatDateStorageUserDefaults.h"
+#import "GULKeychainStorage.h"
+#import "GULKeychainUtils.h"
+#import "GULSecureCoding.h"
+#import "GULURLSessionDataResponse.h"
+#import "NSURLSession+GULPromises.h"
+#import "GULLogger.h"
+#import "GULLoggerLevel.h"
+#import "GULNSData+zlib.h"
+#import "GULMutableDictionary.h"
+#import "GULNetwork.h"
+#import "GULNetworkConstants.h"
+#import "GULNetworkLoggerProtocol.h"
+#import "GULNetworkMessageCode.h"
+#import "GULNetworkURLSession.h"
+#import "GULReachabilityChecker.h"
+
+FOUNDATION_EXPORT double GoogleUtilitiesVersionNumber;
+FOUNDATION_EXPORT const unsigned char GoogleUtilitiesVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.debug.xcconfig
new file mode 100644
index 0000000..1136499
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.debug.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -l"z" -framework "FBLPromises" -framework "Security" -framework "SystemConfiguration"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GoogleUtilities
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.modulemap b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.modulemap
new file mode 100644
index 0000000..491dd0a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.modulemap	
@@ -0,0 +1,6 @@
+framework module GoogleUtilities {
+  umbrella header "GoogleUtilities-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.release.xcconfig
new file mode 100644
index 0000000..1136499
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/GoogleUtilities/GoogleUtilities.release.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC"
+GCC_C_LANGUAGE_STANDARD = c99
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}"
+OTHER_LDFLAGS = $(inherited) -l"z" -framework "FBLPromises" -framework "Security" -framework "SystemConfiguration"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/GoogleUtilities
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-Info.plist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-Info.plist
new file mode 100644
index 0000000..2243fe6
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.markdown b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.markdown
new file mode 100644
index 0000000..5d11b5a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.markdown	
@@ -0,0 +1,2831 @@
+# Acknowledgements
+This application makes use of the following third party libraries:
+
+## BoringSSL-GRPC
+
+BoringSSL is a fork of OpenSSL. As such, large parts of it fall under OpenSSL
+licensing. Files that are completely new have a Google copyright and an ISC
+license. This license is reproduced at the bottom of this file.
+
+Contributors to BoringSSL are required to follow the CLA rules for Chromium:
+https://cla.developers.google.com/clas
+
+Files in third_party/ have their own licenses, as described therein. The MIT
+license, for third_party/fiat, which, unlike other third_party directories, is
+compiled into non-test libraries, is included below.
+
+The OpenSSL toolkit stays under a dual license, i.e. both the conditions of the
+OpenSSL License and the original SSLeay license apply to the toolkit. See below
+for the actual license texts. Actually both licenses are BSD-style Open Source
+licenses. In case of any license issues related to OpenSSL please contact
+openssl-core@openssl.org.
+
+The following are Google-internal bug numbers where explicit permission from
+some authors is recorded for use of their work. (This is purely for our own
+record keeping.)
+  27287199
+  27287880
+  27287883
+
+  OpenSSL License
+  ---------------
+
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+ Original SSLeay License
+ -----------------------
+
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+
+ISC license used for completely new code in BoringSSL:
+
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+
+The code in third_party/fiat carries the MIT license:
+
+Copyright (c) 2015-2016 the fiat-crypto authors (see
+https://github.com/mit-plv/fiat-crypto/blob/master/AUTHORS).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+
+Licenses for support code
+-------------------------
+
+Parts of the TLS test suite are under the Go license. This code is not included
+in BoringSSL (i.e. libcrypto and libssl) when compiled, however, so
+distributing code linked against BoringSSL does not trigger this license:
+
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+BoringSSL uses the Chromium test infrastructure to run a continuous build,
+trybots etc. The scripts which manage this, and the script for generating build
+metadata, are under the Chromium license. Distributing code linked against
+BoringSSL does not trigger this license.
+
+Copyright 2015 The Chromium Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+## Firebase
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## FirebaseAuth
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## FirebaseCore
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## FirebaseCoreDiagnostics
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## FirebaseFirestore
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## GTMSessionFetcher
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## GoogleDataTransport
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## GoogleUtilities
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+================================================================================
+
+The following copyright from Landon J. Fuller applies to the isAppEncrypted
+function in Environment/third_party/GULAppEnvironmentUtil.m.
+
+Copyright (c) 2017 Landon J. Fuller <landon@landonf.org>
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Comment from
+<a href="http://iphonedevwiki.net/index.php/Crack_prevention">iPhone Dev Wiki
+Crack Prevention</a>: App Store binaries are signed by both their developer
+and Apple. This encrypts the binary so that decryption keys are needed in order
+to make the binary readable. When iOS executes the binary, the decryption keys
+are used to decrypt the binary into a readable state where it is then loaded
+into memory and executed. iOS can tell the encryption status of a binary via the
+cryptid structure member of LC_ENCRYPTION_INFO MachO load command. If cryptid is
+a non-zero value then the binary is encrypted.
+
+'Cracking' works by letting the kernel decrypt the binary then siphoning the
+decrypted data into a new binary file, resigning, and repackaging. This will
+only work on jailbroken devices as codesignature validation has been removed.
+Resigning takes place because while the codesignature doesn't have to be valid
+thanks to the jailbreak, it does have to be in place unless you have AppSync or
+similar to disable codesignature checks.
+
+More information at <a href="http://landonf.org/2009/02/index.html">Landon
+Fuller's blog</a>
+
+
+## PromisesObjC
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## abseil
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+
+## gRPC-C++
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+## gRPC-Core
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
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+   Unless required by applicable law or agreed to in writing, software
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+   See the License for the specific language governing permissions and
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+
+
+## leveldb-library
+
+Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+## nanopb
+
+Copyright (c) 2011 Petteri Aimonen <jpa at nanopb.mail.kapsi.fi>
+
+This software is provided 'as-is', without any express or 
+implied warranty. In no event will the authors be held liable 
+for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any 
+purpose, including commercial applications, and to alter it and 
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you 
+   must not claim that you wrote the original software. If you use 
+   this software in a product, an acknowledgment in the product 
+   documentation would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and 
+   must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source 
+   distribution.
+
+Generated by CocoaPods - https://cocoapods.org
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.plist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.plist
new file mode 100644
index 0000000..02315f5
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-acknowledgements.plist	
@@ -0,0 +1,2947 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreferenceSpecifiers</key>
+	<array>
+		<dict>
+			<key>FooterText</key>
+			<string>This application makes use of the following third party libraries:</string>
+			<key>Title</key>
+			<string>Acknowledgements</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>BoringSSL is a fork of OpenSSL. As such, large parts of it fall under OpenSSL
+licensing. Files that are completely new have a Google copyright and an ISC
+license. This license is reproduced at the bottom of this file.
+
+Contributors to BoringSSL are required to follow the CLA rules for Chromium:
+https://cla.developers.google.com/clas
+
+Files in third_party/ have their own licenses, as described therein. The MIT
+license, for third_party/fiat, which, unlike other third_party directories, is
+compiled into non-test libraries, is included below.
+
+The OpenSSL toolkit stays under a dual license, i.e. both the conditions of the
+OpenSSL License and the original SSLeay license apply to the toolkit. See below
+for the actual license texts. Actually both licenses are BSD-style Open Source
+licenses. In case of any license issues related to OpenSSL please contact
+openssl-core@openssl.org.
+
+The following are Google-internal bug numbers where explicit permission from
+some authors is recorded for use of their work. (This is purely for our own
+record keeping.)
+  27287199
+  27287880
+  27287883
+
+  OpenSSL License
+  ---------------
+
+/* ====================================================================
+ * Copyright (c) 1998-2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+ Original SSLeay License
+ -----------------------
+
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+
+ISC license used for completely new code in BoringSSL:
+
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+
+The code in third_party/fiat carries the MIT license:
+
+Copyright (c) 2015-2016 the fiat-crypto authors (see
+https://github.com/mit-plv/fiat-crypto/blob/master/AUTHORS).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+
+Licenses for support code
+-------------------------
+
+Parts of the TLS test suite are under the Go license. This code is not included
+in BoringSSL (i.e. libcrypto and libssl) when compiled, however, so
+distributing code linked against BoringSSL does not trigger this license:
+
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+BoringSSL uses the Chromium test infrastructure to run a continuous build,
+trybots etc. The scripts which manage this, and the script for generating build
+metadata, are under the Chromium license. Distributing code linked against
+BoringSSL does not trigger this license.
+
+Copyright 2015 The Chromium Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+</string>
+			<key>License</key>
+			<string>Mixed</string>
+			<key>Title</key>
+			<string>BoringSSL-GRPC</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>Firebase</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>FirebaseAuth</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>FirebaseCore</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>FirebaseCoreDiagnostics</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>FirebaseFirestore</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>GTMSessionFetcher</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>GoogleDataTransport</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+================================================================================
+
+The following copyright from Landon J. Fuller applies to the isAppEncrypted
+function in Environment/third_party/GULAppEnvironmentUtil.m.
+
+Copyright (c) 2017 Landon J. Fuller &lt;landon@landonf.org&gt;
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Comment from
+&lt;a href="http://iphonedevwiki.net/index.php/Crack_prevention"&gt;iPhone Dev Wiki
+Crack Prevention&lt;/a&gt;: App Store binaries are signed by both their developer
+and Apple. This encrypts the binary so that decryption keys are needed in order
+to make the binary readable. When iOS executes the binary, the decryption keys
+are used to decrypt the binary into a readable state where it is then loaded
+into memory and executed. iOS can tell the encryption status of a binary via the
+cryptid structure member of LC_ENCRYPTION_INFO MachO load command. If cryptid is
+a non-zero value then the binary is encrypted.
+
+'Cracking' works by letting the kernel decrypt the binary then siphoning the
+decrypted data into a new binary file, resigning, and repackaging. This will
+only work on jailbroken devices as codesignature validation has been removed.
+Resigning takes place because while the codesignature doesn't have to be valid
+thanks to the jailbreak, it does have to be in place unless you have AppSync or
+similar to disable codesignature checks.
+
+More information at &lt;a href="http://landonf.org/2009/02/index.html"&gt;Landon
+Fuller's blog&lt;/a&gt;
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>GoogleUtilities</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache</string>
+			<key>Title</key>
+			<string>PromisesObjC</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+</string>
+			<key>License</key>
+			<string>Apache License, Version 2.0</string>
+			<key>Title</key>
+			<string>abseil</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache License, Version 2.0</string>
+			<key>Title</key>
+			<string>gRPC-C++</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
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+      form, that is based on (or derived from) the Work and for which the
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+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
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+      communication on electronic mailing lists, source code control systems,
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+      Work (including but not limited to damages for loss of goodwill,
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+   9. Accepting Warranty or Additional Liability. While redistributing
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+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+</string>
+			<key>License</key>
+			<string>Apache License, Version 2.0</string>
+			<key>Title</key>
+			<string>gRPC-Core</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+</string>
+			<key>License</key>
+			<string>New BSD</string>
+			<key>Title</key>
+			<string>leveldb-library</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2011 Petteri Aimonen &lt;jpa at nanopb.mail.kapsi.fi&gt;
+
+This software is provided 'as-is', without any express or 
+implied warranty. In no event will the authors be held liable 
+for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any 
+purpose, including commercial applications, and to alter it and 
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you 
+   must not claim that you wrote the original software. If you use 
+   this software in a product, an acknowledgment in the product 
+   documentation would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and 
+   must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source 
+   distribution.
+</string>
+			<key>License</key>
+			<string>zlib</string>
+			<key>Title</key>
+			<string>nanopb</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Generated by CocoaPods - https://cocoapods.org</string>
+			<key>Title</key>
+			<string></string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+	</array>
+	<key>StringsTable</key>
+	<string>Acknowledgements</string>
+	<key>Title</key>
+	<string>Acknowledgements</string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-dummy.m b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-dummy.m
new file mode 100644
index 0000000..cbfcc8a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_Pods_ChattingApp : NSObject
+@end
+@implementation PodsDummy_Pods_ChattingApp
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-input-files.xcfilelist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-input-files.xcfilelist
new file mode 100644
index 0000000..442f284
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-input-files.xcfilelist	
@@ -0,0 +1,15 @@
+${PODS_ROOT}/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks.sh
+${BUILT_PRODUCTS_DIR}/BoringSSL-GRPC/openssl_grpc.framework
+${BUILT_PRODUCTS_DIR}/FirebaseAuth/FirebaseAuth.framework
+${BUILT_PRODUCTS_DIR}/FirebaseCore/FirebaseCore.framework
+${BUILT_PRODUCTS_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework
+${BUILT_PRODUCTS_DIR}/FirebaseFirestore/FirebaseFirestore.framework
+${BUILT_PRODUCTS_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework
+${BUILT_PRODUCTS_DIR}/GoogleDataTransport/GoogleDataTransport.framework
+${BUILT_PRODUCTS_DIR}/GoogleUtilities/GoogleUtilities.framework
+${BUILT_PRODUCTS_DIR}/PromisesObjC/FBLPromises.framework
+${BUILT_PRODUCTS_DIR}/abseil/absl.framework
+${BUILT_PRODUCTS_DIR}/gRPC-C++/grpcpp.framework
+${BUILT_PRODUCTS_DIR}/gRPC-Core/grpc.framework
+${BUILT_PRODUCTS_DIR}/leveldb-library/leveldb.framework
+${BUILT_PRODUCTS_DIR}/nanopb/nanopb.framework
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-output-files.xcfilelist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-output-files.xcfilelist
new file mode 100644
index 0000000..4ed3709
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Debug-output-files.xcfilelist	
@@ -0,0 +1,14 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/openssl_grpc.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseAuth.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseCore.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseCoreDiagnostics.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseFirestore.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GTMSessionFetcher.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GoogleDataTransport.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GoogleUtilities.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FBLPromises.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/absl.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/grpcpp.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/grpc.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/leveldb.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/nanopb.framework
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-input-files.xcfilelist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-input-files.xcfilelist
new file mode 100644
index 0000000..442f284
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-input-files.xcfilelist	
@@ -0,0 +1,15 @@
+${PODS_ROOT}/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks.sh
+${BUILT_PRODUCTS_DIR}/BoringSSL-GRPC/openssl_grpc.framework
+${BUILT_PRODUCTS_DIR}/FirebaseAuth/FirebaseAuth.framework
+${BUILT_PRODUCTS_DIR}/FirebaseCore/FirebaseCore.framework
+${BUILT_PRODUCTS_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework
+${BUILT_PRODUCTS_DIR}/FirebaseFirestore/FirebaseFirestore.framework
+${BUILT_PRODUCTS_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework
+${BUILT_PRODUCTS_DIR}/GoogleDataTransport/GoogleDataTransport.framework
+${BUILT_PRODUCTS_DIR}/GoogleUtilities/GoogleUtilities.framework
+${BUILT_PRODUCTS_DIR}/PromisesObjC/FBLPromises.framework
+${BUILT_PRODUCTS_DIR}/abseil/absl.framework
+${BUILT_PRODUCTS_DIR}/gRPC-C++/grpcpp.framework
+${BUILT_PRODUCTS_DIR}/gRPC-Core/grpc.framework
+${BUILT_PRODUCTS_DIR}/leveldb-library/leveldb.framework
+${BUILT_PRODUCTS_DIR}/nanopb/nanopb.framework
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-output-files.xcfilelist b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-output-files.xcfilelist
new file mode 100644
index 0000000..4ed3709
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks-Release-output-files.xcfilelist	
@@ -0,0 +1,14 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/openssl_grpc.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseAuth.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseCore.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseCoreDiagnostics.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FirebaseFirestore.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GTMSessionFetcher.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GoogleDataTransport.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GoogleUtilities.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FBLPromises.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/absl.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/grpcpp.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/grpc.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/leveldb.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/nanopb.framework
\ No newline at end of file
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks.sh b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks.sh
new file mode 100755
index 0000000..8e12368
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-frameworks.sh	
@@ -0,0 +1,212 @@
+#!/bin/sh
+set -e
+set -u
+set -o pipefail
+
+function on_error {
+  echo "$(realpath -mq "${0}"):$1: error: Unexpected failure"
+}
+trap 'on_error $LINENO' ERR
+
+if [ -z ${FRAMEWORKS_FOLDER_PATH+x} ]; then
+  # If FRAMEWORKS_FOLDER_PATH is not set, then there's nowhere for us to copy
+  # frameworks to, so exit 0 (signalling the script phase was successful).
+  exit 0
+fi
+
+echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+COCOAPODS_PARALLEL_CODE_SIGN="${COCOAPODS_PARALLEL_CODE_SIGN:-false}"
+SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"
+BCSYMBOLMAP_DIR="BCSymbolMaps"
+
+
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+# Copies and strips a vendored framework
+install_framework()
+{
+  if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$1"
+  elif [ -r "${BUILT_PRODUCTS_DIR}/$(basename "$1")" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$(basename "$1")"
+  elif [ -r "$1" ]; then
+    local source="$1"
+  fi
+
+  local destination="${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+  if [ -L "${source}" ]; then
+    echo "Symlinked..."
+    source="$(readlink "${source}")"
+  fi
+
+  if [ -d "${source}/${BCSYMBOLMAP_DIR}" ]; then
+    # Locate and install any .bcsymbolmaps if present, and remove them from the .framework before the framework is copied
+    find "${source}/${BCSYMBOLMAP_DIR}" -name "*.bcsymbolmap"|while read f; do
+      echo "Installing $f"
+      install_bcsymbolmap "$f" "$destination"
+      rm "$f"
+    done
+    rmdir "${source}/${BCSYMBOLMAP_DIR}"
+  fi
+
+  # Use filter instead of exclude so missing patterns don't throw errors.
+  echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --links --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
+  rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --links --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+
+  local basename
+  basename="$(basename -s .framework "$1")"
+  binary="${destination}/${basename}.framework/${basename}"
+
+  if ! [ -r "$binary" ]; then
+    binary="${destination}/${basename}"
+  elif [ -L "${binary}" ]; then
+    echo "Destination binary is symlinked..."
+    dirname="$(dirname "${binary}")"
+    binary="${dirname}/$(readlink "${binary}")"
+  fi
+
+  # Strip invalid architectures so "fat" simulator / device frameworks work on device
+  if [[ "$(file "$binary")" == *"dynamically linked shared library"* ]]; then
+    strip_invalid_archs "$binary"
+  fi
+
+  # Resign the code if required by the build settings to avoid unstable apps
+  code_sign_if_enabled "${destination}/$(basename "$1")"
+
+  # Embed linked Swift runtime libraries. No longer necessary as of Xcode 7.
+  if [ "${XCODE_VERSION_MAJOR}" -lt 7 ]; then
+    local swift_runtime_libs
+    swift_runtime_libs=$(xcrun otool -LX "$binary" | grep --color=never @rpath/libswift | sed -E s/@rpath\\/\(.+dylib\).*/\\1/g | uniq -u)
+    for lib in $swift_runtime_libs; do
+      echo "rsync -auv \"${SWIFT_STDLIB_PATH}/${lib}\" \"${destination}\""
+      rsync -auv "${SWIFT_STDLIB_PATH}/${lib}" "${destination}"
+      code_sign_if_enabled "${destination}/${lib}"
+    done
+  fi
+}
+# Copies and strips a vendored dSYM
+install_dsym() {
+  local source="$1"
+  warn_missing_arch=${2:-true}
+  if [ -r "$source" ]; then
+    # Copy the dSYM into the targets temp dir.
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${DERIVED_FILES_DIR}\""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DERIVED_FILES_DIR}"
+
+    local basename
+    basename="$(basename -s .dSYM "$source")"
+    binary_name="$(ls "$source/Contents/Resources/DWARF")"
+    binary="${DERIVED_FILES_DIR}/${basename}.dSYM/Contents/Resources/DWARF/${binary_name}"
+
+    # Strip invalid architectures from the dSYM.
+    if [[ "$(file "$binary")" == *"Mach-O "*"dSYM companion"* ]]; then
+      strip_invalid_archs "$binary" "$warn_missing_arch"
+    fi
+    if [[ $STRIP_BINARY_RETVAL == 0 ]]; then
+      # Move the stripped file into its final destination.
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --links --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${DERIVED_FILES_DIR}/${basename}.framework.dSYM\" \"${DWARF_DSYM_FOLDER_PATH}\""
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --links --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${DERIVED_FILES_DIR}/${basename}.dSYM" "${DWARF_DSYM_FOLDER_PATH}"
+    else
+      # The dSYM was not stripped at all, in this case touch a fake folder so the input/output paths from Xcode do not reexecute this script because the file is missing.
+      mkdir -p "${DWARF_DSYM_FOLDER_PATH}"
+      touch "${DWARF_DSYM_FOLDER_PATH}/${basename}.dSYM"
+    fi
+  fi
+}
+
+# Used as a return value for each invocation of `strip_invalid_archs` function.
+STRIP_BINARY_RETVAL=0
+
+# Strip invalid architectures
+strip_invalid_archs() {
+  binary="$1"
+  warn_missing_arch=${2:-true}
+  # Get architectures for current target binary
+  binary_archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | awk '{$1=$1;print}' | rev)"
+  # Intersect them with the architectures we are building for
+  intersected_archs="$(echo ${ARCHS[@]} ${binary_archs[@]} | tr ' ' '\n' | sort | uniq -d)"
+  # If there are no archs supported by this binary then warn the user
+  if [[ -z "$intersected_archs" ]]; then
+    if [[ "$warn_missing_arch" == "true" ]]; then
+      echo "warning: [CP] Vendored binary '$binary' contains architectures ($binary_archs) none of which match the current build architectures ($ARCHS)."
+    fi
+    STRIP_BINARY_RETVAL=1
+    return
+  fi
+  stripped=""
+  for arch in $binary_archs; do
+    if ! [[ "${ARCHS}" == *"$arch"* ]]; then
+      # Strip non-valid architectures in-place
+      lipo -remove "$arch" -output "$binary" "$binary"
+      stripped="$stripped $arch"
+    fi
+  done
+  if [[ "$stripped" ]]; then
+    echo "Stripped $binary of architectures:$stripped"
+  fi
+  STRIP_BINARY_RETVAL=0
+}
+
+# Copies the bcsymbolmap files of a vendored framework
+install_bcsymbolmap() {
+    local bcsymbolmap_path="$1"
+    local destination="${BUILT_PRODUCTS_DIR}"
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}"
+}
+
+# Signs a framework with the provided identity
+code_sign_if_enabled() {
+  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY:-}" -a "${CODE_SIGNING_REQUIRED:-}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
+    # Use the current code_sign_identity
+    echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
+    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements '$1'"
+
+    if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+      code_sign_cmd="$code_sign_cmd &"
+    fi
+    echo "$code_sign_cmd"
+    eval "$code_sign_cmd"
+  fi
+}
+
+if [[ "$CONFIGURATION" == "Debug" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/BoringSSL-GRPC/openssl_grpc.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseAuth/FirebaseAuth.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseCore/FirebaseCore.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseFirestore/FirebaseFirestore.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GoogleDataTransport/GoogleDataTransport.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GoogleUtilities/GoogleUtilities.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/PromisesObjC/FBLPromises.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/abseil/absl.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/gRPC-C++/grpcpp.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/gRPC-Core/grpc.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/leveldb-library/leveldb.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/nanopb/nanopb.framework"
+fi
+if [[ "$CONFIGURATION" == "Release" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/BoringSSL-GRPC/openssl_grpc.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseAuth/FirebaseAuth.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseCore/FirebaseCore.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/FirebaseFirestore/FirebaseFirestore.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GoogleDataTransport/GoogleDataTransport.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/GoogleUtilities/GoogleUtilities.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/PromisesObjC/FBLPromises.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/abseil/absl.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/gRPC-C++/grpcpp.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/gRPC-Core/grpc.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/leveldb-library/leveldb.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/nanopb/nanopb.framework"
+fi
+if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+  wait
+fi
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-umbrella.h b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-umbrella.h
new file mode 100644
index 0000000..7a8a67e
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp-umbrella.h	
@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double Pods_ChattingAppVersionNumber;
+FOUNDATION_EXPORT const unsigned char Pods_ChattingAppVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.debug.xcconfig
new file mode 100644
index 0000000..daace26
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.debug.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 $(inherited) PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC/openssl_grpc.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth/FirebaseAuth.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore/FirebaseCore.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore/FirebaseFirestore.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport/GoogleDataTransport.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities/GoogleUtilities.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC/FBLPromises.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/abseil/absl.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++/grpcpp.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core/grpc.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library/leveldb.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb/nanopb.framework/Headers" "${PODS_ROOT}/Headers/Public" "${PODS_ROOT}/Headers/Public/Firebase" $(inherited) ${PODS_ROOT}/Firebase/CoreOnly/Sources "${PODS_TARGET_SRCROOT}/Sources/FBLPromises/include"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -l"c++" -l"z" -framework "CoreTelephony" -framework "FBLPromises" -framework "FirebaseAuth" -framework "FirebaseCore" -framework "FirebaseCoreDiagnostics" -framework "FirebaseFirestore" -framework "Foundation" -framework "GTMSessionFetcher" -framework "GoogleDataTransport" -framework "GoogleUtilities" -framework "SafariServices" -framework "Security" -framework "SystemConfiguration" -framework "UIKit" -framework "absl" -framework "grpc" -framework "grpcpp" -framework "leveldb" -framework "nanopb" -framework "openssl_grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.modulemap b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.modulemap
new file mode 100644
index 0000000..b136f79
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.modulemap	
@@ -0,0 +1,6 @@
+framework module Pods_ChattingApp {
+  umbrella header "Pods-ChattingApp-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.release.xcconfig
new file mode 100644
index 0000000..daace26
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/Pods-ChattingApp/Pods-ChattingApp.release.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 $(inherited) PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC/openssl_grpc.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAuth/FirebaseAuth.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore/FirebaseCore.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics/FirebaseCoreDiagnostics.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseFirestore/FirebaseFirestore.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GTMSessionFetcher/GTMSessionFetcher.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport/GoogleDataTransport.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities/GoogleUtilities.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC/FBLPromises.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/abseil/absl.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++/grpcpp.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core/grpc.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library/leveldb.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb/nanopb.framework/Headers" "${PODS_ROOT}/Headers/Public" "${PODS_ROOT}/Headers/Public/Firebase" $(inherited) ${PODS_ROOT}/Firebase/CoreOnly/Sources "${PODS_TARGET_SRCROOT}/Sources/FBLPromises/include"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -l"c++" -l"z" -framework "CoreTelephony" -framework "FBLPromises" -framework "FirebaseAuth" -framework "FirebaseCore" -framework "FirebaseCoreDiagnostics" -framework "FirebaseFirestore" -framework "Foundation" -framework "GTMSessionFetcher" -framework "GoogleDataTransport" -framework "GoogleUtilities" -framework "SafariServices" -framework "Security" -framework "SystemConfiguration" -framework "UIKit" -framework "absl" -framework "grpc" -framework "grpcpp" -framework "leveldb" -framework "nanopb" -framework "openssl_grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-Info.plist b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-Info.plist
new file mode 100644
index 0000000..0a12077
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>2.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-dummy.m b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-dummy.m
new file mode 100644
index 0000000..ab1f210
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_PromisesObjC : NSObject
+@end
+@implementation PodsDummy_PromisesObjC
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-umbrella.h b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-umbrella.h
new file mode 100644
index 0000000..5b014a8
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC-umbrella.h	
@@ -0,0 +1,36 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "FBLPromise+All.h"
+#import "FBLPromise+Always.h"
+#import "FBLPromise+Any.h"
+#import "FBLPromise+Async.h"
+#import "FBLPromise+Await.h"
+#import "FBLPromise+Catch.h"
+#import "FBLPromise+Delay.h"
+#import "FBLPromise+Do.h"
+#import "FBLPromise+Race.h"
+#import "FBLPromise+Recover.h"
+#import "FBLPromise+Reduce.h"
+#import "FBLPromise+Retry.h"
+#import "FBLPromise+Testing.h"
+#import "FBLPromise+Then.h"
+#import "FBLPromise+Timeout.h"
+#import "FBLPromise+Validate.h"
+#import "FBLPromise+Wrap.h"
+#import "FBLPromise.h"
+#import "FBLPromiseError.h"
+#import "FBLPromises.h"
+
+FOUNDATION_EXPORT double FBLPromisesVersionNumber;
+FOUNDATION_EXPORT const unsigned char FBLPromisesVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.debug.xcconfig
new file mode 100644
index 0000000..1f5ad57
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.debug.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}/Sources/FBLPromises/include"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/PromisesObjC
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.modulemap b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.modulemap
new file mode 100644
index 0000000..7d485cd
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.modulemap	
@@ -0,0 +1,6 @@
+framework module FBLPromises {
+  umbrella header "PromisesObjC-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.release.xcconfig
new file mode 100644
index 0000000..1f5ad57
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/PromisesObjC/PromisesObjC.release.xcconfig	
@@ -0,0 +1,12 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_TARGET_SRCROOT}/Sources/FBLPromises/include"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/PromisesObjC
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil-Info.plist b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-Info.plist
new file mode 100644
index 0000000..19dc877
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>0.20200225.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil-dummy.m b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-dummy.m
new file mode 100644
index 0000000..91c97c1
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_abseil : NSObject
+@end
+@implementation PodsDummy_abseil
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil-prefix.pch b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil-umbrella.h b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-umbrella.h
new file mode 100644
index 0000000..06dc0b3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil-umbrella.h	
@@ -0,0 +1,173 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "algorithm/algorithm.h"
+#import "algorithm/container.h"
+#import "base/internal/atomic_hook.h"
+#import "base/call_once.h"
+#import "base/casts.h"
+#import "base/internal/cycleclock.h"
+#import "base/internal/low_level_scheduling.h"
+#import "base/internal/per_thread_tls.h"
+#import "base/internal/spinlock.h"
+#import "base/internal/sysinfo.h"
+#import "base/internal/thread_identity.h"
+#import "base/internal/tsan_mutex_interface.h"
+#import "base/internal/unscaledcycleclock.h"
+#import "base/internal/hide_ptr.h"
+#import "base/internal/identity.h"
+#import "base/internal/inline_variable.h"
+#import "base/internal/invoke.h"
+#import "base/internal/scheduling_mode.h"
+#import "base/internal/bits.h"
+#import "base/config.h"
+#import "base/options.h"
+#import "base/policy_checks.h"
+#import "base/attributes.h"
+#import "base/const_init.h"
+#import "base/internal/thread_annotations.h"
+#import "base/macros.h"
+#import "base/optimization.h"
+#import "base/port.h"
+#import "base/thread_annotations.h"
+#import "base/dynamic_annotations.h"
+#import "base/internal/endian.h"
+#import "base/internal/unaligned_access.h"
+#import "base/internal/errno_saver.h"
+#import "base/internal/exponential_biased.h"
+#import "base/log_severity.h"
+#import "base/internal/direct_mmap.h"
+#import "base/internal/low_level_alloc.h"
+#import "base/internal/periodic_sampler.h"
+#import "base/internal/pretty_function.h"
+#import "base/internal/raw_logging.h"
+#import "base/internal/spinlock_akaros.inc"
+#import "base/internal/spinlock_linux.inc"
+#import "base/internal/spinlock_posix.inc"
+#import "base/internal/spinlock_wait.h"
+#import "base/internal/spinlock_win32.inc"
+#import "base/internal/throw_delegate.h"
+#import "container/internal/common.h"
+#import "container/internal/compressed_tuple.h"
+#import "container/internal/container_memory.h"
+#import "container/fixed_array.h"
+#import "container/flat_hash_map.h"
+#import "container/internal/hash_function_defaults.h"
+#import "container/internal/hash_policy_traits.h"
+#import "container/internal/hashtable_debug_hooks.h"
+#import "container/internal/hashtablez_sampler.h"
+#import "container/internal/have_sse.h"
+#import "container/inlined_vector.h"
+#import "container/internal/inlined_vector.h"
+#import "container/internal/layout.h"
+#import "container/internal/raw_hash_map.h"
+#import "container/internal/raw_hash_set.h"
+#import "debugging/internal/address_is_readable.h"
+#import "debugging/internal/elf_mem_image.h"
+#import "debugging/internal/vdso_support.h"
+#import "debugging/internal/demangle.h"
+#import "debugging/internal/stacktrace_aarch64-inl.inc"
+#import "debugging/internal/stacktrace_arm-inl.inc"
+#import "debugging/internal/stacktrace_config.h"
+#import "debugging/internal/stacktrace_generic-inl.inc"
+#import "debugging/internal/stacktrace_powerpc-inl.inc"
+#import "debugging/internal/stacktrace_unimplemented-inl.inc"
+#import "debugging/internal/stacktrace_win32-inl.inc"
+#import "debugging/internal/stacktrace_x86-inl.inc"
+#import "debugging/stacktrace.h"
+#import "debugging/internal/symbolize.h"
+#import "debugging/symbolize.h"
+#import "debugging/symbolize_elf.inc"
+#import "debugging/symbolize_unimplemented.inc"
+#import "debugging/symbolize_win32.inc"
+#import "hash/internal/city.h"
+#import "hash/hash.h"
+#import "hash/internal/hash.h"
+#import "memory/memory.h"
+#import "meta/type_traits.h"
+#import "numeric/int128.h"
+#import "numeric/int128_have_intrinsic.inc"
+#import "numeric/int128_no_intrinsic.inc"
+#import "strings/internal/char_map.h"
+#import "strings/internal/escaping.h"
+#import "strings/internal/ostringstream.h"
+#import "strings/internal/resize_uninitialized.h"
+#import "strings/internal/utf8.h"
+#import "strings/str_format.h"
+#import "strings/internal/str_format/arg.h"
+#import "strings/internal/str_format/bind.h"
+#import "strings/internal/str_format/checker.h"
+#import "strings/internal/str_format/extension.h"
+#import "strings/internal/str_format/float_conversion.h"
+#import "strings/internal/str_format/output.h"
+#import "strings/internal/str_format/parser.h"
+#import "strings/ascii.h"
+#import "strings/charconv.h"
+#import "strings/escaping.h"
+#import "strings/internal/charconv_bigint.h"
+#import "strings/internal/charconv_parse.h"
+#import "strings/internal/memutil.h"
+#import "strings/internal/stl_type_traits.h"
+#import "strings/internal/str_join_internal.h"
+#import "strings/internal/str_split_internal.h"
+#import "strings/match.h"
+#import "strings/numbers.h"
+#import "strings/str_cat.h"
+#import "strings/str_join.h"
+#import "strings/str_replace.h"
+#import "strings/str_split.h"
+#import "strings/string_view.h"
+#import "strings/strip.h"
+#import "strings/substitute.h"
+#import "synchronization/internal/graphcycles.h"
+#import "synchronization/internal/kernel_timeout.h"
+#import "synchronization/barrier.h"
+#import "synchronization/blocking_counter.h"
+#import "synchronization/internal/create_thread_identity.h"
+#import "synchronization/internal/mutex_nonprod.inc"
+#import "synchronization/internal/per_thread_sem.h"
+#import "synchronization/internal/waiter.h"
+#import "synchronization/mutex.h"
+#import "synchronization/notification.h"
+#import "time/internal/cctz/include/cctz/civil_time.h"
+#import "time/internal/cctz/include/cctz/civil_time_detail.h"
+#import "time/internal/cctz/include/cctz/time_zone.h"
+#import "time/internal/cctz/include/cctz/zone_info_source.h"
+#import "time/internal/cctz/src/time_zone_fixed.h"
+#import "time/internal/cctz/src/time_zone_if.h"
+#import "time/internal/cctz/src/time_zone_impl.h"
+#import "time/internal/cctz/src/time_zone_info.h"
+#import "time/internal/cctz/src/time_zone_libc.h"
+#import "time/internal/cctz/src/time_zone_posix.h"
+#import "time/internal/cctz/src/tzfile.h"
+#import "time/civil_time.h"
+#import "time/clock.h"
+#import "time/internal/get_current_time_chrono.inc"
+#import "time/internal/get_current_time_posix.inc"
+#import "time/time.h"
+#import "types/any.h"
+#import "types/bad_any_cast.h"
+#import "types/bad_any_cast.h"
+#import "types/bad_optional_access.h"
+#import "types/bad_variant_access.h"
+#import "types/compare.h"
+#import "types/internal/optional.h"
+#import "types/optional.h"
+#import "types/internal/span.h"
+#import "types/span.h"
+#import "types/internal/variant.h"
+#import "types/variant.h"
+#import "utility/utility.h"
+
+FOUNDATION_EXPORT double abslVersionNumber;
+FOUNDATION_EXPORT const unsigned char abslVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.debug.xcconfig
new file mode 100644
index 0000000..4bb3336
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.debug.xcconfig	
@@ -0,0 +1,15 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/abseil
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_LDFLAGS = $(inherited) -l"c++"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/abseil
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = $(inherited) "$(PODS_TARGET_SRCROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil.modulemap b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.modulemap
new file mode 100644
index 0000000..a3eea8d
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.modulemap	
@@ -0,0 +1,6 @@
+framework module absl {
+  umbrella header "abseil-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/abseil/abseil.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.release.xcconfig
new file mode 100644
index 0000000..4bb3336
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/abseil/abseil.release.xcconfig	
@@ -0,0 +1,15 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/abseil
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_LDFLAGS = $(inherited) -l"c++"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/abseil
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = $(inherited) "$(PODS_TARGET_SRCROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/ResourceBundle-gRPCCertificates-Cpp-gRPC-C++-Info.plist b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/ResourceBundle-gRPCCertificates-Cpp-gRPC-C++-Info.plist
new file mode 100644
index 0000000..05bce5e
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/ResourceBundle-gRPCCertificates-Cpp-gRPC-C++-Info.plist	
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>BNDL</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.28.2</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-Info.plist b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-Info.plist
new file mode 100644
index 0000000..eb452bd
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.28.2</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-dummy.m b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-dummy.m
new file mode 100644
index 0000000..b8cbe56
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_gRPC_C__ : NSObject
+@end
+@implementation PodsDummy_gRPC_C__
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-prefix.pch b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-umbrella.h b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-umbrella.h
new file mode 100644
index 0000000..21eb034
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++-umbrella.h	
@@ -0,0 +1,147 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "alarm.h"
+#import "alarm_impl.h"
+#import "channel.h"
+#import "channel_impl.h"
+#import "client_context.h"
+#import "completion_queue.h"
+#import "completion_queue_impl.h"
+#import "create_channel.h"
+#import "create_channel_impl.h"
+#import "create_channel_posix.h"
+#import "create_channel_posix_impl.h"
+#import "ext/health_check_service_server_builder_option.h"
+#import "generic/async_generic_service.h"
+#import "generic/generic_stub.h"
+#import "generic/generic_stub_impl.h"
+#import "grpcpp.h"
+#import "health_check_service_interface.h"
+#import "health_check_service_interface_impl.h"
+#import "impl/call.h"
+#import "impl/channel_argument_option.h"
+#import "impl/client_unary_call.h"
+#import "impl/codegen/async_generic_service.h"
+#import "impl/codegen/async_stream.h"
+#import "impl/codegen/async_stream_impl.h"
+#import "impl/codegen/async_unary_call.h"
+#import "impl/codegen/async_unary_call_impl.h"
+#import "impl/codegen/byte_buffer.h"
+#import "impl/codegen/call.h"
+#import "impl/codegen/call_hook.h"
+#import "impl/codegen/call_op_set.h"
+#import "impl/codegen/call_op_set_interface.h"
+#import "impl/codegen/callback_common.h"
+#import "impl/codegen/channel_interface.h"
+#import "impl/codegen/client_callback.h"
+#import "impl/codegen/client_callback_impl.h"
+#import "impl/codegen/client_context.h"
+#import "impl/codegen/client_context_impl.h"
+#import "impl/codegen/client_interceptor.h"
+#import "impl/codegen/client_unary_call.h"
+#import "impl/codegen/completion_queue.h"
+#import "impl/codegen/completion_queue_impl.h"
+#import "impl/codegen/completion_queue_tag.h"
+#import "impl/codegen/config.h"
+#import "impl/codegen/core_codegen.h"
+#import "impl/codegen/core_codegen_interface.h"
+#import "impl/codegen/create_auth_context.h"
+#import "impl/codegen/delegating_channel.h"
+#import "impl/codegen/grpc_library.h"
+#import "impl/codegen/intercepted_channel.h"
+#import "impl/codegen/interceptor.h"
+#import "impl/codegen/interceptor_common.h"
+#import "impl/codegen/message_allocator.h"
+#import "impl/codegen/metadata_map.h"
+#import "impl/codegen/method_handler.h"
+#import "impl/codegen/method_handler_impl.h"
+#import "impl/codegen/rpc_method.h"
+#import "impl/codegen/rpc_service_method.h"
+#import "impl/codegen/security/auth_context.h"
+#import "impl/codegen/serialization_traits.h"
+#import "impl/codegen/server_callback.h"
+#import "impl/codegen/server_callback_handlers.h"
+#import "impl/codegen/server_callback_impl.h"
+#import "impl/codegen/server_context.h"
+#import "impl/codegen/server_context_impl.h"
+#import "impl/codegen/server_interceptor.h"
+#import "impl/codegen/server_interface.h"
+#import "impl/codegen/service_type.h"
+#import "impl/codegen/slice.h"
+#import "impl/codegen/status.h"
+#import "impl/codegen/status_code_enum.h"
+#import "impl/codegen/string_ref.h"
+#import "impl/codegen/stub_options.h"
+#import "impl/codegen/sync.h"
+#import "impl/codegen/sync_stream.h"
+#import "impl/codegen/sync_stream_impl.h"
+#import "impl/codegen/time.h"
+#import "impl/grpc_library.h"
+#import "impl/method_handler_impl.h"
+#import "impl/rpc_method.h"
+#import "impl/rpc_service_method.h"
+#import "impl/serialization_traits.h"
+#import "impl/server_builder_option.h"
+#import "impl/server_builder_option_impl.h"
+#import "impl/server_builder_plugin.h"
+#import "impl/server_initializer.h"
+#import "impl/server_initializer_impl.h"
+#import "impl/service_type.h"
+#import "resource_quota.h"
+#import "resource_quota_impl.h"
+#import "security/auth_context.h"
+#import "security/auth_metadata_processor.h"
+#import "security/auth_metadata_processor_impl.h"
+#import "security/credentials.h"
+#import "security/credentials_impl.h"
+#import "security/server_credentials.h"
+#import "security/server_credentials_impl.h"
+#import "security/tls_credentials_options.h"
+#import "server.h"
+#import "server_builder.h"
+#import "server_builder_impl.h"
+#import "server_context.h"
+#import "server_impl.h"
+#import "server_posix.h"
+#import "server_posix_impl.h"
+#import "support/async_stream.h"
+#import "support/async_stream_impl.h"
+#import "support/async_unary_call.h"
+#import "support/async_unary_call_impl.h"
+#import "support/byte_buffer.h"
+#import "support/channel_arguments.h"
+#import "support/channel_arguments_impl.h"
+#import "support/client_callback.h"
+#import "support/client_callback_impl.h"
+#import "support/client_interceptor.h"
+#import "support/config.h"
+#import "support/interceptor.h"
+#import "support/message_allocator.h"
+#import "support/proto_buffer_reader.h"
+#import "support/proto_buffer_writer.h"
+#import "support/server_callback.h"
+#import "support/server_callback_impl.h"
+#import "support/server_interceptor.h"
+#import "support/slice.h"
+#import "support/status.h"
+#import "support/status_code_enum.h"
+#import "support/string_ref.h"
+#import "support/stub_options.h"
+#import "support/sync_stream.h"
+#import "support/sync_stream_impl.h"
+#import "support/time.h"
+#import "support/validate_service_config.h"
+
+FOUNDATION_EXPORT double grpcppVersionNumber;
+FOUNDATION_EXPORT const unsigned char grpcppVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.debug.xcconfig
new file mode 100644
index 0000000..870da7a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.debug.xcconfig	
@@ -0,0 +1,19 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_DOCUMENTATION_COMMENTS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CLANG_WARN_STRICT_PROTOTYPES = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = "$(inherited)" "$(PODS_TARGET_SRCROOT)/include"
+OTHER_LDFLAGS = $(inherited) -l"c++" -framework "absl" -framework "grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/gRPC-C++
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = "$(PODS_TARGET_SRCROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.modulemap b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.modulemap
new file mode 100644
index 0000000..9e4c2cc
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.modulemap	
@@ -0,0 +1,6 @@
+framework module grpcpp {
+  umbrella header "gRPC-C++-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.release.xcconfig
new file mode 100644
index 0000000..870da7a
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-C++/gRPC-C++.release.xcconfig	
@@ -0,0 +1,19 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_DOCUMENTATION_COMMENTS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CLANG_WARN_STRICT_PROTOTYPES = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/gRPC-C++
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil" "${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = "$(inherited)" "$(PODS_TARGET_SRCROOT)/include"
+OTHER_LDFLAGS = $(inherited) -l"c++" -framework "absl" -framework "grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/gRPC-C++
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = "$(PODS_TARGET_SRCROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-Info.plist b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-Info.plist
new file mode 100644
index 0000000..eb452bd
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.28.2</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-dummy.m b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-dummy.m
new file mode 100644
index 0000000..5e59998
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_gRPC_Core : NSObject
+@end
+@implementation PodsDummy_gRPC_Core
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-prefix.pch b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.debug.xcconfig
new file mode 100644
index 0000000..5fd0948
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.debug.xcconfig	
@@ -0,0 +1,19 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CLANG_WARN_STRICT_PROTOTYPES = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+GRPC_SRC_ROOT = $(PODS_ROOT)/gRPC-Core
+HEADER_SEARCH_PATHS = "$(inherited)" "$(GRPC_SRC_ROOT)/include"
+OTHER_LDFLAGS = $(inherited) -l"c++" -l"z" -framework "absl" -framework "openssl_grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/gRPC-Core
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = "$(GRPC_SRC_ROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.modulemap b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.modulemap
new file mode 100644
index 0000000..5e3b97e
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.modulemap	
@@ -0,0 +1,79 @@
+
+framework module grpc {
+  umbrella header "grpc.h"
+
+  header "support/alloc.h"
+  header "support/atm.h"
+  header "support/cpu.h"
+  header "support/log.h"
+  header "support/log_windows.h"
+  header "support/port_platform.h"
+  header "support/string_util.h"
+  header "support/sync.h"
+  header "support/sync_abseil.h"
+  header "support/sync_generic.h"
+  header "support/thd_id.h"
+  header "support/time.h"
+  header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
+  header "impl/codegen/gpr_slice.h"
+  header "impl/codegen/gpr_types.h"
+  header "impl/codegen/log.h"
+  header "impl/codegen/port_platform.h"
+  header "impl/codegen/sync.h"
+  header "impl/codegen/sync_abseil.h"
+  header "impl/codegen/sync_generic.h"
+  header "impl/codegen/byte_buffer.h"
+  header "impl/codegen/byte_buffer_reader.h"
+  header "impl/codegen/compression_types.h"
+  header "impl/codegen/connectivity_state.h"
+  header "impl/codegen/grpc_types.h"
+  header "impl/codegen/propagation_bits.h"
+  header "impl/codegen/slice.h"
+  header "impl/codegen/status.h"
+  header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
+  header "impl/codegen/gpr_slice.h"
+  header "impl/codegen/gpr_types.h"
+  header "impl/codegen/log.h"
+  header "impl/codegen/port_platform.h"
+  header "impl/codegen/sync.h"
+  header "impl/codegen/sync_abseil.h"
+  header "impl/codegen/sync_generic.h"
+  header "grpc_security.h"
+  header "byte_buffer.h"
+  header "byte_buffer_reader.h"
+  header "compression.h"
+  header "fork.h"
+  header "grpc.h"
+  header "grpc_posix.h"
+  header "grpc_security_constants.h"
+  header "load_reporting.h"
+  header "slice.h"
+  header "slice_buffer.h"
+  header "status.h"
+  header "support/workaround_list.h"
+  header "census.h"
+
+  textual header "support/atm_gcc_atomic.h"
+  textual header "support/atm_gcc_sync.h"
+  textual header "support/atm_windows.h"
+  textual header "support/sync_custom.h"
+  textual header "support/sync_posix.h"
+  textual header "support/sync_windows.h"
+  textual header "impl/codegen/atm_gcc_atomic.h"
+  textual header "impl/codegen/atm_gcc_sync.h"
+  textual header "impl/codegen/atm_windows.h"
+  textual header "impl/codegen/sync_custom.h"
+  textual header "impl/codegen/sync_posix.h"
+  textual header "impl/codegen/sync_windows.h"
+  textual header "impl/codegen/atm_gcc_atomic.h"
+  textual header "impl/codegen/atm_gcc_sync.h"
+  textual header "impl/codegen/atm_windows.h"
+  textual header "impl/codegen/sync_custom.h"
+  textual header "impl/codegen/sync_posix.h"
+  textual header "impl/codegen/sync_windows.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.release.xcconfig
new file mode 100644
index 0000000..5fd0948
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/gRPC-Core/gRPC-Core.release.xcconfig	
@@ -0,0 +1,19 @@
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CLANG_WARN_STRICT_PROTOTYPES = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/gRPC-Core
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/BoringSSL-GRPC" "${PODS_CONFIGURATION_BUILD_DIR}/abseil"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+GRPC_SRC_ROOT = $(PODS_ROOT)/gRPC-Core
+HEADER_SEARCH_PATHS = "$(inherited)" "$(GRPC_SRC_ROOT)/include"
+OTHER_LDFLAGS = $(inherited) -l"c++" -l"z" -framework "absl" -framework "openssl_grpc"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/gRPC-Core
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USER_HEADER_SEARCH_PATHS = "$(GRPC_SRC_ROOT)"
+USE_HEADERMAP = NO
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-Info.plist b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-Info.plist
new file mode 100644
index 0000000..0f6eb4f
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.22.1</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-dummy.m b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-dummy.m
new file mode 100644
index 0000000..dba1492
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_leveldb_library : NSObject
+@end
+@implementation PodsDummy_leveldb_library
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-prefix.pch b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-umbrella.h b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-umbrella.h
new file mode 100644
index 0000000..6a45902
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library-umbrella.h	
@@ -0,0 +1,31 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "c.h"
+#import "cache.h"
+#import "comparator.h"
+#import "db.h"
+#import "dumpfile.h"
+#import "env.h"
+#import "export.h"
+#import "filter_policy.h"
+#import "iterator.h"
+#import "options.h"
+#import "slice.h"
+#import "status.h"
+#import "table.h"
+#import "table_builder.h"
+#import "write_batch.h"
+
+FOUNDATION_EXPORT double leveldbVersionNumber;
+FOUNDATION_EXPORT const unsigned char leveldbVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.debug.xcconfig
new file mode 100644
index 0000000..ea1c640
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.debug.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 LEVELDB_IS_BIG_ENDIAN=0 LEVELDB_PLATFORM_POSIX HAVE_FULLFSYNC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_ROOT}/leveldb-library" "${PODS_ROOT}/leveldb-library/include"
+OTHER_LDFLAGS = $(inherited) -l"c++"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/leveldb-library
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_HEADERMAP = No
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
+WARNING_CFLAGS = -Wno-shorten-64-to-32 -Wno-comma -Wno-unreachable-code -Wno-conditional-uninitialized -Wno-deprecated-declarations
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.modulemap b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.modulemap
new file mode 100644
index 0000000..fd77435
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.modulemap	
@@ -0,0 +1,6 @@
+framework module leveldb {
+  umbrella header "leveldb-library-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.release.xcconfig
new file mode 100644
index 0000000..ea1c640
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/leveldb-library/leveldb-library.release.xcconfig	
@@ -0,0 +1,15 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/leveldb-library
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 LEVELDB_IS_BIG_ENDIAN=0 LEVELDB_PLATFORM_POSIX HAVE_FULLFSYNC=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_ROOT}/leveldb-library" "${PODS_ROOT}/leveldb-library/include"
+OTHER_LDFLAGS = $(inherited) -l"c++"
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/leveldb-library
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_HEADERMAP = No
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
+WARNING_CFLAGS = -Wno-shorten-64-to-32 -Wno-comma -Wno-unreachable-code -Wno-conditional-uninitialized -Wno-deprecated-declarations
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-Info.plist b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-Info.plist
new file mode 100644
index 0000000..658a7bf
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-Info.plist	
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>2.30908.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-dummy.m b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-dummy.m
new file mode 100644
index 0000000..b3fa595
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-dummy.m	
@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_nanopb : NSObject
+@end
+@implementation PodsDummy_nanopb
+@end
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-prefix.pch b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-prefix.pch
new file mode 100644
index 0000000..beb2a24
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-prefix.pch	
@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-umbrella.h b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-umbrella.h
new file mode 100644
index 0000000..07e77b3
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb-umbrella.h	
@@ -0,0 +1,26 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+#import "pb.h"
+#import "pb_common.h"
+#import "pb_decode.h"
+#import "pb_encode.h"
+#import "pb.h"
+#import "pb_decode.h"
+#import "pb_common.h"
+#import "pb.h"
+#import "pb_encode.h"
+#import "pb_common.h"
+
+FOUNDATION_EXPORT double nanopbVersionNumber;
+FOUNDATION_EXPORT const unsigned char nanopbVersionString[];
+
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.debug.xcconfig b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.debug.xcconfig
new file mode 100644
index 0000000..7156998
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.debug.xcconfig	
@@ -0,0 +1,11 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/nanopb
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 $(inherited) PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/nanopb
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.modulemap b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.modulemap
new file mode 100644
index 0000000..e8d4b53
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.modulemap	
@@ -0,0 +1,6 @@
+framework module nanopb {
+  umbrella header "nanopb-umbrella.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.release.xcconfig b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.release.xcconfig
new file mode 100644
index 0000000..7156998
--- /dev/null
+++ b/ChattingApp 000/Pods/Target Support Files/nanopb/nanopb.release.xcconfig	
@@ -0,0 +1,11 @@
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/nanopb
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 $(inherited) PB_FIELD_32BIT=1 PB_NO_PACKED_STRUCTS=1 PB_ENABLE_MALLOC=1
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/nanopb
+PODS_XCFRAMEWORKS_BUILD_DIR = $(PODS_CONFIGURATION_BUILD_DIR)/XCFrameworkIntermediates
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
diff --git a/ChattingApp 000/Pods/abseil/LICENSE b/ChattingApp 000/Pods/abseil/LICENSE
new file mode 100644
index 0000000..ccd61dc
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/LICENSE	
@@ -0,0 +1,203 @@
+
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diff --git a/ChattingApp 000/Pods/abseil/README.md b/ChattingApp 000/Pods/abseil/README.md
new file mode 100644
index 0000000..85de569
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/README.md	
@@ -0,0 +1,114 @@
+# Abseil - C++ Common Libraries
+
+The repository contains the Abseil C++ library code. Abseil is an open-source
+collection of C++ code (compliant to C++11) designed to augment the C++
+standard library.
+
+## Table of Contents
+
+- [About Abseil](#about)
+- [Quickstart](#quickstart)
+- [Building Abseil](#build)
+- [Codemap](#codemap)
+- [License](#license)
+- [Links](#links)
+
+<a name="about"></a>
+## About Abseil
+
+Abseil is an open-source collection of C++ library code designed to augment
+the C++ standard library. The Abseil library code is collected from Google's
+own C++ code base, has been extensively tested and used in production, and
+is the same code we depend on in our daily coding lives.
+
+In some cases, Abseil provides pieces missing from the C++ standard; in
+others, Abseil provides alternatives to the standard for special needs
+we've found through usage in the Google code base. We denote those cases
+clearly within the library code we provide you.
+
+Abseil is not meant to be a competitor to the standard library; we've
+just found that many of these utilities serve a purpose within our code
+base, and we now want to provide those resources to the C++ community as
+a whole.
+
+<a name="quickstart"></a>
+## Quickstart
+
+If you want to just get started, make sure you at least run through the
+[Abseil Quickstart](https://abseil.io/docs/cpp/quickstart). The Quickstart
+contains information about setting up your development environment, downloading
+the Abseil code, running tests, and getting a simple binary working.
+
+<a name="build"></a>
+## Building Abseil
+
+[Bazel](https://bazel.build) is the official build system for Abseil,
+which is supported on most major platforms (Linux, Windows, macOS, for example)
+and compilers. See the [quickstart](https://abseil.io/docs/cpp/quickstart) for
+more information on building Abseil using the Bazel build system.
+
+<a name="cmake"></a>
+If you require CMake support, please check the
+[CMake build instructions](CMake/README.md).
+
+## Codemap
+
+Abseil contains the following C++ library components:
+
+* [`base`](absl/base/) Abseil Fundamentals
+  <br /> The `base` library contains initialization code and other code which
+  all other Abseil code depends on. Code within `base` may not depend on any
+  other code (other than the C++ standard library).
+* [`algorithm`](absl/algorithm/)
+  <br /> The `algorithm` library contains additions to the C++ `<algorithm>`
+  library and container-based versions of such algorithms.
+* [`container`](absl/container/)
+  <br /> The `container` library contains additional STL-style containers,
+  including Abseil's unordered "Swiss table" containers.
+* [`debugging`](absl/debugging/)
+  <br /> The `debugging` library contains code useful for enabling leak
+  checks, and stacktrace and symbolization utilities.
+* [`hash`](absl/hash/)
+  <br /> The `hash` library contains the hashing framework and default hash
+  functor implementations for hashable types in Abseil.
+* [`memory`](absl/memory/)
+  <br /> The `memory` library contains C++11-compatible versions of
+  `std::make_unique()` and related memory management facilities.
+* [`meta`](absl/meta/)
+  <br /> The `meta` library contains C++11-compatible versions of type checks
+  available within C++14 and C++17 versions of the C++ `<type_traits>` library.
+* [`numeric`](absl/numeric/)
+  <br /> The `numeric` library contains C++11-compatible 128-bit integers.
+* [`strings`](absl/strings/)
+  <br /> The `strings` library contains a variety of strings routines and
+  utilities, including a C++11-compatible version of the C++17
+  `std::string_view` type.
+* [`synchronization`](absl/synchronization/)
+  <br /> The `synchronization` library contains concurrency primitives (Abseil's
+  `absl::Mutex` class, an alternative to `std::mutex`) and a variety of
+  synchronization abstractions.
+* [`time`](absl/time/)
+  <br /> The `time` library contains abstractions for computing with absolute
+  points in time, durations of time, and formatting and parsing time within
+  time zones.
+* [`types`](absl/types/)
+  <br /> The `types` library contains non-container utility types, like a
+  C++11-compatible version of the C++17 `std::optional` type.
+* [`utility`](absl/utility/)
+  <br /> The `utility` library contains utility and helper code.
+
+## License
+
+The Abseil C++ library is licensed under the terms of the Apache
+license. See [LICENSE](LICENSE) for more information.
+
+## Links
+
+For more information about Abseil:
+
+* Consult our [Abseil Introduction](https://abseil.io/about/intro)
+* Read [Why Adopt Abseil](https://abseil.io/about/philosophy) to understand our
+  design philosophy.
+* Peruse our
+  [Abseil Compatibility Guarantees](https://abseil.io/about/compatibility) to
+  understand both what we promise to you, and what we expect of you in return.
diff --git a/ChattingApp 000/Pods/abseil/absl/algorithm/algorithm.h b/ChattingApp 000/Pods/abseil/absl/algorithm/algorithm.h
new file mode 100644
index 0000000..e9b4733
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/algorithm/algorithm.h	
@@ -0,0 +1,159 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: algorithm.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains Google extensions to the standard <algorithm> C++
+// header.
+
+#ifndef ABSL_ALGORITHM_ALGORITHM_H_
+#define ABSL_ALGORITHM_ALGORITHM_H_
+
+#include <algorithm>
+#include <iterator>
+#include <type_traits>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace algorithm_internal {
+
+// Performs comparisons with operator==, similar to C++14's `std::equal_to<>`.
+struct EqualTo {
+  template <typename T, typename U>
+  bool operator()(const T& a, const U& b) const {
+    return a == b;
+  }
+};
+
+template <typename InputIter1, typename InputIter2, typename Pred>
+bool EqualImpl(InputIter1 first1, InputIter1 last1, InputIter2 first2,
+               InputIter2 last2, Pred pred, std::input_iterator_tag,
+               std::input_iterator_tag) {
+  while (true) {
+    if (first1 == last1) return first2 == last2;
+    if (first2 == last2) return false;
+    if (!pred(*first1, *first2)) return false;
+    ++first1;
+    ++first2;
+  }
+}
+
+template <typename InputIter1, typename InputIter2, typename Pred>
+bool EqualImpl(InputIter1 first1, InputIter1 last1, InputIter2 first2,
+               InputIter2 last2, Pred&& pred, std::random_access_iterator_tag,
+               std::random_access_iterator_tag) {
+  return (last1 - first1 == last2 - first2) &&
+         std::equal(first1, last1, first2, std::forward<Pred>(pred));
+}
+
+// When we are using our own internal predicate that just applies operator==, we
+// forward to the non-predicate form of std::equal. This enables an optimization
+// in libstdc++ that can result in std::memcmp being used for integer types.
+template <typename InputIter1, typename InputIter2>
+bool EqualImpl(InputIter1 first1, InputIter1 last1, InputIter2 first2,
+               InputIter2 last2, algorithm_internal::EqualTo /* unused */,
+               std::random_access_iterator_tag,
+               std::random_access_iterator_tag) {
+  return (last1 - first1 == last2 - first2) &&
+         std::equal(first1, last1, first2);
+}
+
+template <typename It>
+It RotateImpl(It first, It middle, It last, std::true_type) {
+  return std::rotate(first, middle, last);
+}
+
+template <typename It>
+It RotateImpl(It first, It middle, It last, std::false_type) {
+  std::rotate(first, middle, last);
+  return std::next(first, std::distance(middle, last));
+}
+
+}  // namespace algorithm_internal
+
+// equal()
+//
+// Compares the equality of two ranges specified by pairs of iterators, using
+// the given predicate, returning true iff for each corresponding iterator i1
+// and i2 in the first and second range respectively, pred(*i1, *i2) == true
+//
+// This comparison takes at most min(`last1` - `first1`, `last2` - `first2`)
+// invocations of the predicate. Additionally, if InputIter1 and InputIter2 are
+// both random-access iterators, and `last1` - `first1` != `last2` - `first2`,
+// then the predicate is never invoked and the function returns false.
+//
+// This is a C++11-compatible implementation of C++14 `std::equal`.  See
+// https://en.cppreference.com/w/cpp/algorithm/equal for more information.
+template <typename InputIter1, typename InputIter2, typename Pred>
+bool equal(InputIter1 first1, InputIter1 last1, InputIter2 first2,
+           InputIter2 last2, Pred&& pred) {
+  return algorithm_internal::EqualImpl(
+      first1, last1, first2, last2, std::forward<Pred>(pred),
+      typename std::iterator_traits<InputIter1>::iterator_category{},
+      typename std::iterator_traits<InputIter2>::iterator_category{});
+}
+
+// Overload of equal() that performs comparison of two ranges specified by pairs
+// of iterators using operator==.
+template <typename InputIter1, typename InputIter2>
+bool equal(InputIter1 first1, InputIter1 last1, InputIter2 first2,
+           InputIter2 last2) {
+  return absl::equal(first1, last1, first2, last2,
+                     algorithm_internal::EqualTo{});
+}
+
+// linear_search()
+//
+// Performs a linear search for `value` using the iterator `first` up to
+// but not including `last`, returning true if [`first`, `last`) contains an
+// element equal to `value`.
+//
+// A linear search is of O(n) complexity which is guaranteed to make at most
+// n = (`last` - `first`) comparisons. A linear search over short containers
+// may be faster than a binary search, even when the container is sorted.
+template <typename InputIterator, typename EqualityComparable>
+bool linear_search(InputIterator first, InputIterator last,
+                   const EqualityComparable& value) {
+  return std::find(first, last, value) != last;
+}
+
+// rotate()
+//
+// Performs a left rotation on a range of elements (`first`, `last`) such that
+// `middle` is now the first element. `rotate()` returns an iterator pointing to
+// the first element before rotation. This function is exactly the same as
+// `std::rotate`, but fixes a bug in gcc
+// <= 4.9 where `std::rotate` returns `void` instead of an iterator.
+//
+// The complexity of this algorithm is the same as that of `std::rotate`, but if
+// `ForwardIterator` is not a random-access iterator, then `absl::rotate`
+// performs an additional pass over the range to construct the return value.
+template <typename ForwardIterator>
+ForwardIterator rotate(ForwardIterator first, ForwardIterator middle,
+                       ForwardIterator last) {
+  return algorithm_internal::RotateImpl(
+      first, middle, last,
+      std::is_same<decltype(std::rotate(first, middle, last)),
+                   ForwardIterator>());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_ALGORITHM_ALGORITHM_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/algorithm/container.h b/ChattingApp 000/Pods/abseil/absl/algorithm/container.h
new file mode 100644
index 0000000..d72532d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/algorithm/container.h	
@@ -0,0 +1,1727 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: container.h
+// -----------------------------------------------------------------------------
+//
+// This header file provides Container-based versions of algorithmic functions
+// within the C++ standard library. The following standard library sets of
+// functions are covered within this file:
+//
+//   * Algorithmic <iterator> functions
+//   * Algorithmic <numeric> functions
+//   * <algorithm> functions
+//
+// The standard library functions operate on iterator ranges; the functions
+// within this API operate on containers, though many return iterator ranges.
+//
+// All functions within this API are named with a `c_` prefix. Calls such as
+// `absl::c_xx(container, ...) are equivalent to std:: functions such as
+// `std::xx(std::begin(cont), std::end(cont), ...)`. Functions that act on
+// iterators but not conceptually on iterator ranges (e.g. `std::iter_swap`)
+// have no equivalent here.
+//
+// For template parameter and variable naming, `C` indicates the container type
+// to which the function is applied, `Pred` indicates the predicate object type
+// to be used by the function and `T` indicates the applicable element type.
+
+#ifndef ABSL_ALGORITHM_CONTAINER_H_
+#define ABSL_ALGORITHM_CONTAINER_H_
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <numeric>
+#include <type_traits>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include "absl/algorithm/algorithm.h"
+#include "absl/base/macros.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_algorithm_internal {
+
+// NOTE: it is important to defer to ADL lookup for building with C++ modules,
+// especially for headers like <valarray> which are not visible from this file
+// but specialize std::begin and std::end.
+using std::begin;
+using std::end;
+
+// The type of the iterator given by begin(c) (possibly std::begin(c)).
+// ContainerIter<const vector<T>> gives vector<T>::const_iterator,
+// while ContainerIter<vector<T>> gives vector<T>::iterator.
+template <typename C>
+using ContainerIter = decltype(begin(std::declval<C&>()));
+
+// An MSVC bug involving template parameter substitution requires us to use
+// decltype() here instead of just std::pair.
+template <typename C1, typename C2>
+using ContainerIterPairType =
+    decltype(std::make_pair(ContainerIter<C1>(), ContainerIter<C2>()));
+
+template <typename C>
+using ContainerDifferenceType =
+    decltype(std::distance(std::declval<ContainerIter<C>>(),
+                           std::declval<ContainerIter<C>>()));
+
+template <typename C>
+using ContainerPointerType =
+    typename std::iterator_traits<ContainerIter<C>>::pointer;
+
+// container_algorithm_internal::c_begin and
+// container_algorithm_internal::c_end are abbreviations for proper ADL
+// lookup of std::begin and std::end, i.e.
+//   using std::begin;
+//   using std::end;
+//   std::foo(begin(c), end(c);
+// becomes
+//   std::foo(container_algorithm_internal::begin(c),
+//   container_algorithm_internal::end(c));
+// These are meant for internal use only.
+
+template <typename C>
+ContainerIter<C> c_begin(C& c) { return begin(c); }
+
+template <typename C>
+ContainerIter<C> c_end(C& c) { return end(c); }
+
+template <typename T>
+struct IsUnorderedContainer : std::false_type {};
+
+template <class Key, class T, class Hash, class KeyEqual, class Allocator>
+struct IsUnorderedContainer<
+    std::unordered_map<Key, T, Hash, KeyEqual, Allocator>> : std::true_type {};
+
+template <class Key, class Hash, class KeyEqual, class Allocator>
+struct IsUnorderedContainer<std::unordered_set<Key, Hash, KeyEqual, Allocator>>
+    : std::true_type {};
+
+// container_algorithm_internal::c_size. It is meant for internal use only.
+
+template <class C>
+auto c_size(C& c) -> decltype(c.size()) {
+  return c.size();
+}
+
+template <class T, std::size_t N>
+constexpr std::size_t c_size(T (&)[N]) {
+  return N;
+}
+
+}  // namespace container_algorithm_internal
+
+// PUBLIC API
+
+//------------------------------------------------------------------------------
+// Abseil algorithm.h functions
+//------------------------------------------------------------------------------
+
+// c_linear_search()
+//
+// Container-based version of absl::linear_search() for performing a linear
+// search within a container.
+template <typename C, typename EqualityComparable>
+bool c_linear_search(const C& c, EqualityComparable&& value) {
+  return linear_search(container_algorithm_internal::c_begin(c),
+                       container_algorithm_internal::c_end(c),
+                       std::forward<EqualityComparable>(value));
+}
+
+//------------------------------------------------------------------------------
+// <iterator> algorithms
+//------------------------------------------------------------------------------
+
+// c_distance()
+//
+// Container-based version of the <iterator> `std::distance()` function to
+// return the number of elements within a container.
+template <typename C>
+container_algorithm_internal::ContainerDifferenceType<const C> c_distance(
+    const C& c) {
+  return std::distance(container_algorithm_internal::c_begin(c),
+                       container_algorithm_internal::c_end(c));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Non-modifying sequence operations
+//------------------------------------------------------------------------------
+
+// c_all_of()
+//
+// Container-based version of the <algorithm> `std::all_of()` function to
+// test a condition on all elements within a container.
+template <typename C, typename Pred>
+bool c_all_of(const C& c, Pred&& pred) {
+  return std::all_of(container_algorithm_internal::c_begin(c),
+                     container_algorithm_internal::c_end(c),
+                     std::forward<Pred>(pred));
+}
+
+// c_any_of()
+//
+// Container-based version of the <algorithm> `std::any_of()` function to
+// test if any element in a container fulfills a condition.
+template <typename C, typename Pred>
+bool c_any_of(const C& c, Pred&& pred) {
+  return std::any_of(container_algorithm_internal::c_begin(c),
+                     container_algorithm_internal::c_end(c),
+                     std::forward<Pred>(pred));
+}
+
+// c_none_of()
+//
+// Container-based version of the <algorithm> `std::none_of()` function to
+// test if no elements in a container fulfil a condition.
+template <typename C, typename Pred>
+bool c_none_of(const C& c, Pred&& pred) {
+  return std::none_of(container_algorithm_internal::c_begin(c),
+                      container_algorithm_internal::c_end(c),
+                      std::forward<Pred>(pred));
+}
+
+// c_for_each()
+//
+// Container-based version of the <algorithm> `std::for_each()` function to
+// apply a function to a container's elements.
+template <typename C, typename Function>
+decay_t<Function> c_for_each(C&& c, Function&& f) {
+  return std::for_each(container_algorithm_internal::c_begin(c),
+                       container_algorithm_internal::c_end(c),
+                       std::forward<Function>(f));
+}
+
+// c_find()
+//
+// Container-based version of the <algorithm> `std::find()` function to find
+// the first element containing the passed value within a container value.
+template <typename C, typename T>
+container_algorithm_internal::ContainerIter<C> c_find(C& c, T&& value) {
+  return std::find(container_algorithm_internal::c_begin(c),
+                   container_algorithm_internal::c_end(c),
+                   std::forward<T>(value));
+}
+
+// c_find_if()
+//
+// Container-based version of the <algorithm> `std::find_if()` function to find
+// the first element in a container matching the given condition.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerIter<C> c_find_if(C& c, Pred&& pred) {
+  return std::find_if(container_algorithm_internal::c_begin(c),
+                      container_algorithm_internal::c_end(c),
+                      std::forward<Pred>(pred));
+}
+
+// c_find_if_not()
+//
+// Container-based version of the <algorithm> `std::find_if_not()` function to
+// find the first element in a container not matching the given condition.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerIter<C> c_find_if_not(C& c,
+                                                             Pred&& pred) {
+  return std::find_if_not(container_algorithm_internal::c_begin(c),
+                          container_algorithm_internal::c_end(c),
+                          std::forward<Pred>(pred));
+}
+
+// c_find_end()
+//
+// Container-based version of the <algorithm> `std::find_end()` function to
+// find the last subsequence within a container.
+template <typename Sequence1, typename Sequence2>
+container_algorithm_internal::ContainerIter<Sequence1> c_find_end(
+    Sequence1& sequence, Sequence2& subsequence) {
+  return std::find_end(container_algorithm_internal::c_begin(sequence),
+                       container_algorithm_internal::c_end(sequence),
+                       container_algorithm_internal::c_begin(subsequence),
+                       container_algorithm_internal::c_end(subsequence));
+}
+
+// Overload of c_find_end() for using a predicate evaluation other than `==` as
+// the function's test condition.
+template <typename Sequence1, typename Sequence2, typename BinaryPredicate>
+container_algorithm_internal::ContainerIter<Sequence1> c_find_end(
+    Sequence1& sequence, Sequence2& subsequence, BinaryPredicate&& pred) {
+  return std::find_end(container_algorithm_internal::c_begin(sequence),
+                       container_algorithm_internal::c_end(sequence),
+                       container_algorithm_internal::c_begin(subsequence),
+                       container_algorithm_internal::c_end(subsequence),
+                       std::forward<BinaryPredicate>(pred));
+}
+
+// c_find_first_of()
+//
+// Container-based version of the <algorithm> `std::find_first_of()` function to
+// find the first element within the container that is also within the options
+// container.
+template <typename C1, typename C2>
+container_algorithm_internal::ContainerIter<C1> c_find_first_of(C1& container,
+                                                                C2& options) {
+  return std::find_first_of(container_algorithm_internal::c_begin(container),
+                            container_algorithm_internal::c_end(container),
+                            container_algorithm_internal::c_begin(options),
+                            container_algorithm_internal::c_end(options));
+}
+
+// Overload of c_find_first_of() for using a predicate evaluation other than
+// `==` as the function's test condition.
+template <typename C1, typename C2, typename BinaryPredicate>
+container_algorithm_internal::ContainerIter<C1> c_find_first_of(
+    C1& container, C2& options, BinaryPredicate&& pred) {
+  return std::find_first_of(container_algorithm_internal::c_begin(container),
+                            container_algorithm_internal::c_end(container),
+                            container_algorithm_internal::c_begin(options),
+                            container_algorithm_internal::c_end(options),
+                            std::forward<BinaryPredicate>(pred));
+}
+
+// c_adjacent_find()
+//
+// Container-based version of the <algorithm> `std::adjacent_find()` function to
+// find equal adjacent elements within a container.
+template <typename Sequence>
+container_algorithm_internal::ContainerIter<Sequence> c_adjacent_find(
+    Sequence& sequence) {
+  return std::adjacent_find(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_adjacent_find() for using a predicate evaluation other than
+// `==` as the function's test condition.
+template <typename Sequence, typename BinaryPredicate>
+container_algorithm_internal::ContainerIter<Sequence> c_adjacent_find(
+    Sequence& sequence, BinaryPredicate&& pred) {
+  return std::adjacent_find(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence),
+                            std::forward<BinaryPredicate>(pred));
+}
+
+// c_count()
+//
+// Container-based version of the <algorithm> `std::count()` function to count
+// values that match within a container.
+template <typename C, typename T>
+container_algorithm_internal::ContainerDifferenceType<const C> c_count(
+    const C& c, T&& value) {
+  return std::count(container_algorithm_internal::c_begin(c),
+                    container_algorithm_internal::c_end(c),
+                    std::forward<T>(value));
+}
+
+// c_count_if()
+//
+// Container-based version of the <algorithm> `std::count_if()` function to
+// count values matching a condition within a container.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerDifferenceType<const C> c_count_if(
+    const C& c, Pred&& pred) {
+  return std::count_if(container_algorithm_internal::c_begin(c),
+                       container_algorithm_internal::c_end(c),
+                       std::forward<Pred>(pred));
+}
+
+// c_mismatch()
+//
+// Container-based version of the <algorithm> `std::mismatch()` function to
+// return the first element where two ordered containers differ.
+template <typename C1, typename C2>
+container_algorithm_internal::ContainerIterPairType<C1, C2>
+c_mismatch(C1& c1, C2& c2) {
+  return std::mismatch(container_algorithm_internal::c_begin(c1),
+                       container_algorithm_internal::c_end(c1),
+                       container_algorithm_internal::c_begin(c2));
+}
+
+// Overload of c_mismatch() for using a predicate evaluation other than `==` as
+// the function's test condition.
+template <typename C1, typename C2, typename BinaryPredicate>
+container_algorithm_internal::ContainerIterPairType<C1, C2>
+c_mismatch(C1& c1, C2& c2, BinaryPredicate&& pred) {
+  return std::mismatch(container_algorithm_internal::c_begin(c1),
+                       container_algorithm_internal::c_end(c1),
+                       container_algorithm_internal::c_begin(c2),
+                       std::forward<BinaryPredicate>(pred));
+}
+
+// c_equal()
+//
+// Container-based version of the <algorithm> `std::equal()` function to
+// test whether two containers are equal.
+//
+// NOTE: the semantics of c_equal() are slightly different than those of
+// equal(): while the latter iterates over the second container only up to the
+// size of the first container, c_equal() also checks whether the container
+// sizes are equal.  This better matches expectations about c_equal() based on
+// its signature.
+//
+// Example:
+//   vector v1 = <1, 2, 3>;
+//   vector v2 = <1, 2, 3, 4>;
+//   equal(std::begin(v1), std::end(v1), std::begin(v2)) returns true
+//   c_equal(v1, v2) returns false
+
+template <typename C1, typename C2>
+bool c_equal(const C1& c1, const C2& c2) {
+  return ((container_algorithm_internal::c_size(c1) ==
+           container_algorithm_internal::c_size(c2)) &&
+          std::equal(container_algorithm_internal::c_begin(c1),
+                     container_algorithm_internal::c_end(c1),
+                     container_algorithm_internal::c_begin(c2)));
+}
+
+// Overload of c_equal() for using a predicate evaluation other than `==` as
+// the function's test condition.
+template <typename C1, typename C2, typename BinaryPredicate>
+bool c_equal(const C1& c1, const C2& c2, BinaryPredicate&& pred) {
+  return ((container_algorithm_internal::c_size(c1) ==
+           container_algorithm_internal::c_size(c2)) &&
+          std::equal(container_algorithm_internal::c_begin(c1),
+                     container_algorithm_internal::c_end(c1),
+                     container_algorithm_internal::c_begin(c2),
+                     std::forward<BinaryPredicate>(pred)));
+}
+
+// c_is_permutation()
+//
+// Container-based version of the <algorithm> `std::is_permutation()` function
+// to test whether a container is a permutation of another.
+template <typename C1, typename C2>
+bool c_is_permutation(const C1& c1, const C2& c2) {
+  using std::begin;
+  using std::end;
+  return c1.size() == c2.size() &&
+         std::is_permutation(begin(c1), end(c1), begin(c2));
+}
+
+// Overload of c_is_permutation() for using a predicate evaluation other than
+// `==` as the function's test condition.
+template <typename C1, typename C2, typename BinaryPredicate>
+bool c_is_permutation(const C1& c1, const C2& c2, BinaryPredicate&& pred) {
+  using std::begin;
+  using std::end;
+  return c1.size() == c2.size() &&
+         std::is_permutation(begin(c1), end(c1), begin(c2),
+                             std::forward<BinaryPredicate>(pred));
+}
+
+// c_search()
+//
+// Container-based version of the <algorithm> `std::search()` function to search
+// a container for a subsequence.
+template <typename Sequence1, typename Sequence2>
+container_algorithm_internal::ContainerIter<Sequence1> c_search(
+    Sequence1& sequence, Sequence2& subsequence) {
+  return std::search(container_algorithm_internal::c_begin(sequence),
+                     container_algorithm_internal::c_end(sequence),
+                     container_algorithm_internal::c_begin(subsequence),
+                     container_algorithm_internal::c_end(subsequence));
+}
+
+// Overload of c_search() for using a predicate evaluation other than
+// `==` as the function's test condition.
+template <typename Sequence1, typename Sequence2, typename BinaryPredicate>
+container_algorithm_internal::ContainerIter<Sequence1> c_search(
+    Sequence1& sequence, Sequence2& subsequence, BinaryPredicate&& pred) {
+  return std::search(container_algorithm_internal::c_begin(sequence),
+                     container_algorithm_internal::c_end(sequence),
+                     container_algorithm_internal::c_begin(subsequence),
+                     container_algorithm_internal::c_end(subsequence),
+                     std::forward<BinaryPredicate>(pred));
+}
+
+// c_search_n()
+//
+// Container-based version of the <algorithm> `std::search_n()` function to
+// search a container for the first sequence of N elements.
+template <typename Sequence, typename Size, typename T>
+container_algorithm_internal::ContainerIter<Sequence> c_search_n(
+    Sequence& sequence, Size count, T&& value) {
+  return std::search_n(container_algorithm_internal::c_begin(sequence),
+                       container_algorithm_internal::c_end(sequence), count,
+                       std::forward<T>(value));
+}
+
+// Overload of c_search_n() for using a predicate evaluation other than
+// `==` as the function's test condition.
+template <typename Sequence, typename Size, typename T,
+          typename BinaryPredicate>
+container_algorithm_internal::ContainerIter<Sequence> c_search_n(
+    Sequence& sequence, Size count, T&& value, BinaryPredicate&& pred) {
+  return std::search_n(container_algorithm_internal::c_begin(sequence),
+                       container_algorithm_internal::c_end(sequence), count,
+                       std::forward<T>(value),
+                       std::forward<BinaryPredicate>(pred));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Modifying sequence operations
+//------------------------------------------------------------------------------
+
+// c_copy()
+//
+// Container-based version of the <algorithm> `std::copy()` function to copy a
+// container's elements into an iterator.
+template <typename InputSequence, typename OutputIterator>
+OutputIterator c_copy(const InputSequence& input, OutputIterator output) {
+  return std::copy(container_algorithm_internal::c_begin(input),
+                   container_algorithm_internal::c_end(input), output);
+}
+
+// c_copy_n()
+//
+// Container-based version of the <algorithm> `std::copy_n()` function to copy a
+// container's first N elements into an iterator.
+template <typename C, typename Size, typename OutputIterator>
+OutputIterator c_copy_n(const C& input, Size n, OutputIterator output) {
+  return std::copy_n(container_algorithm_internal::c_begin(input), n, output);
+}
+
+// c_copy_if()
+//
+// Container-based version of the <algorithm> `std::copy_if()` function to copy
+// a container's elements satisfying some condition into an iterator.
+template <typename InputSequence, typename OutputIterator, typename Pred>
+OutputIterator c_copy_if(const InputSequence& input, OutputIterator output,
+                         Pred&& pred) {
+  return std::copy_if(container_algorithm_internal::c_begin(input),
+                      container_algorithm_internal::c_end(input), output,
+                      std::forward<Pred>(pred));
+}
+
+// c_copy_backward()
+//
+// Container-based version of the <algorithm> `std::copy_backward()` function to
+// copy a container's elements in reverse order into an iterator.
+template <typename C, typename BidirectionalIterator>
+BidirectionalIterator c_copy_backward(const C& src,
+                                      BidirectionalIterator dest) {
+  return std::copy_backward(container_algorithm_internal::c_begin(src),
+                            container_algorithm_internal::c_end(src), dest);
+}
+
+// c_move()
+//
+// Container-based version of the <algorithm> `std::move()` function to move
+// a container's elements into an iterator.
+template <typename C, typename OutputIterator>
+OutputIterator c_move(C&& src, OutputIterator dest) {
+  return std::move(container_algorithm_internal::c_begin(src),
+                   container_algorithm_internal::c_end(src), dest);
+}
+
+// c_move_backward()
+//
+// Container-based version of the <algorithm> `std::move_backward()` function to
+// move a container's elements into an iterator in reverse order.
+template <typename C, typename BidirectionalIterator>
+BidirectionalIterator c_move_backward(C&& src, BidirectionalIterator dest) {
+  return std::move_backward(container_algorithm_internal::c_begin(src),
+                            container_algorithm_internal::c_end(src), dest);
+}
+
+// c_swap_ranges()
+//
+// Container-based version of the <algorithm> `std::swap_ranges()` function to
+// swap a container's elements with another container's elements.
+template <typename C1, typename C2>
+container_algorithm_internal::ContainerIter<C2> c_swap_ranges(C1& c1, C2& c2) {
+  return std::swap_ranges(container_algorithm_internal::c_begin(c1),
+                          container_algorithm_internal::c_end(c1),
+                          container_algorithm_internal::c_begin(c2));
+}
+
+// c_transform()
+//
+// Container-based version of the <algorithm> `std::transform()` function to
+// transform a container's elements using the unary operation, storing the
+// result in an iterator pointing to the last transformed element in the output
+// range.
+template <typename InputSequence, typename OutputIterator, typename UnaryOp>
+OutputIterator c_transform(const InputSequence& input, OutputIterator output,
+                           UnaryOp&& unary_op) {
+  return std::transform(container_algorithm_internal::c_begin(input),
+                        container_algorithm_internal::c_end(input), output,
+                        std::forward<UnaryOp>(unary_op));
+}
+
+// Overload of c_transform() for performing a transformation using a binary
+// predicate.
+template <typename InputSequence1, typename InputSequence2,
+          typename OutputIterator, typename BinaryOp>
+OutputIterator c_transform(const InputSequence1& input1,
+                           const InputSequence2& input2, OutputIterator output,
+                           BinaryOp&& binary_op) {
+  return std::transform(container_algorithm_internal::c_begin(input1),
+                        container_algorithm_internal::c_end(input1),
+                        container_algorithm_internal::c_begin(input2), output,
+                        std::forward<BinaryOp>(binary_op));
+}
+
+// c_replace()
+//
+// Container-based version of the <algorithm> `std::replace()` function to
+// replace a container's elements of some value with a new value. The container
+// is modified in place.
+template <typename Sequence, typename T>
+void c_replace(Sequence& sequence, const T& old_value, const T& new_value) {
+  std::replace(container_algorithm_internal::c_begin(sequence),
+               container_algorithm_internal::c_end(sequence), old_value,
+               new_value);
+}
+
+// c_replace_if()
+//
+// Container-based version of the <algorithm> `std::replace_if()` function to
+// replace a container's elements of some value with a new value based on some
+// condition. The container is modified in place.
+template <typename C, typename Pred, typename T>
+void c_replace_if(C& c, Pred&& pred, T&& new_value) {
+  std::replace_if(container_algorithm_internal::c_begin(c),
+                  container_algorithm_internal::c_end(c),
+                  std::forward<Pred>(pred), std::forward<T>(new_value));
+}
+
+// c_replace_copy()
+//
+// Container-based version of the <algorithm> `std::replace_copy()` function to
+// replace a container's elements of some value with a new value  and return the
+// results within an iterator.
+template <typename C, typename OutputIterator, typename T>
+OutputIterator c_replace_copy(const C& c, OutputIterator result, T&& old_value,
+                              T&& new_value) {
+  return std::replace_copy(container_algorithm_internal::c_begin(c),
+                           container_algorithm_internal::c_end(c), result,
+                           std::forward<T>(old_value),
+                           std::forward<T>(new_value));
+}
+
+// c_replace_copy_if()
+//
+// Container-based version of the <algorithm> `std::replace_copy_if()` function
+// to replace a container's elements of some value with a new value based on
+// some condition, and return the results within an iterator.
+template <typename C, typename OutputIterator, typename Pred, typename T>
+OutputIterator c_replace_copy_if(const C& c, OutputIterator result, Pred&& pred,
+                                 T&& new_value) {
+  return std::replace_copy_if(container_algorithm_internal::c_begin(c),
+                              container_algorithm_internal::c_end(c), result,
+                              std::forward<Pred>(pred),
+                              std::forward<T>(new_value));
+}
+
+// c_fill()
+//
+// Container-based version of the <algorithm> `std::fill()` function to fill a
+// container with some value.
+template <typename C, typename T>
+void c_fill(C& c, T&& value) {
+  std::fill(container_algorithm_internal::c_begin(c),
+            container_algorithm_internal::c_end(c), std::forward<T>(value));
+}
+
+// c_fill_n()
+//
+// Container-based version of the <algorithm> `std::fill_n()` function to fill
+// the first N elements in a container with some value.
+template <typename C, typename Size, typename T>
+void c_fill_n(C& c, Size n, T&& value) {
+  std::fill_n(container_algorithm_internal::c_begin(c), n,
+              std::forward<T>(value));
+}
+
+// c_generate()
+//
+// Container-based version of the <algorithm> `std::generate()` function to
+// assign a container's elements to the values provided by the given generator.
+template <typename C, typename Generator>
+void c_generate(C& c, Generator&& gen) {
+  std::generate(container_algorithm_internal::c_begin(c),
+                container_algorithm_internal::c_end(c),
+                std::forward<Generator>(gen));
+}
+
+// c_generate_n()
+//
+// Container-based version of the <algorithm> `std::generate_n()` function to
+// assign a container's first N elements to the values provided by the given
+// generator.
+template <typename C, typename Size, typename Generator>
+container_algorithm_internal::ContainerIter<C> c_generate_n(C& c, Size n,
+                                                            Generator&& gen) {
+  return std::generate_n(container_algorithm_internal::c_begin(c), n,
+                         std::forward<Generator>(gen));
+}
+
+// Note: `c_xx()` <algorithm> container versions for `remove()`, `remove_if()`,
+// and `unique()` are omitted, because it's not clear whether or not such
+// functions should call erase on their supplied sequences afterwards. Either
+// behavior would be surprising for a different set of users.
+
+// c_remove_copy()
+//
+// Container-based version of the <algorithm> `std::remove_copy()` function to
+// copy a container's elements while removing any elements matching the given
+// `value`.
+template <typename C, typename OutputIterator, typename T>
+OutputIterator c_remove_copy(const C& c, OutputIterator result, T&& value) {
+  return std::remove_copy(container_algorithm_internal::c_begin(c),
+                          container_algorithm_internal::c_end(c), result,
+                          std::forward<T>(value));
+}
+
+// c_remove_copy_if()
+//
+// Container-based version of the <algorithm> `std::remove_copy_if()` function
+// to copy a container's elements while removing any elements matching the given
+// condition.
+template <typename C, typename OutputIterator, typename Pred>
+OutputIterator c_remove_copy_if(const C& c, OutputIterator result,
+                                Pred&& pred) {
+  return std::remove_copy_if(container_algorithm_internal::c_begin(c),
+                             container_algorithm_internal::c_end(c), result,
+                             std::forward<Pred>(pred));
+}
+
+// c_unique_copy()
+//
+// Container-based version of the <algorithm> `std::unique_copy()` function to
+// copy a container's elements while removing any elements containing duplicate
+// values.
+template <typename C, typename OutputIterator>
+OutputIterator c_unique_copy(const C& c, OutputIterator result) {
+  return std::unique_copy(container_algorithm_internal::c_begin(c),
+                          container_algorithm_internal::c_end(c), result);
+}
+
+// Overload of c_unique_copy() for using a predicate evaluation other than
+// `==` for comparing uniqueness of the element values.
+template <typename C, typename OutputIterator, typename BinaryPredicate>
+OutputIterator c_unique_copy(const C& c, OutputIterator result,
+                             BinaryPredicate&& pred) {
+  return std::unique_copy(container_algorithm_internal::c_begin(c),
+                          container_algorithm_internal::c_end(c), result,
+                          std::forward<BinaryPredicate>(pred));
+}
+
+// c_reverse()
+//
+// Container-based version of the <algorithm> `std::reverse()` function to
+// reverse a container's elements.
+template <typename Sequence>
+void c_reverse(Sequence& sequence) {
+  std::reverse(container_algorithm_internal::c_begin(sequence),
+               container_algorithm_internal::c_end(sequence));
+}
+
+// c_reverse_copy()
+//
+// Container-based version of the <algorithm> `std::reverse()` function to
+// reverse a container's elements and write them to an iterator range.
+template <typename C, typename OutputIterator>
+OutputIterator c_reverse_copy(const C& sequence, OutputIterator result) {
+  return std::reverse_copy(container_algorithm_internal::c_begin(sequence),
+                           container_algorithm_internal::c_end(sequence),
+                           result);
+}
+
+// c_rotate()
+//
+// Container-based version of the <algorithm> `std::rotate()` function to
+// shift a container's elements leftward such that the `middle` element becomes
+// the first element in the container.
+template <typename C,
+          typename Iterator = container_algorithm_internal::ContainerIter<C>>
+Iterator c_rotate(C& sequence, Iterator middle) {
+  return absl::rotate(container_algorithm_internal::c_begin(sequence), middle,
+                      container_algorithm_internal::c_end(sequence));
+}
+
+// c_rotate_copy()
+//
+// Container-based version of the <algorithm> `std::rotate_copy()` function to
+// shift a container's elements leftward such that the `middle` element becomes
+// the first element in a new iterator range.
+template <typename C, typename OutputIterator>
+OutputIterator c_rotate_copy(
+    const C& sequence,
+    container_algorithm_internal::ContainerIter<const C> middle,
+    OutputIterator result) {
+  return std::rotate_copy(container_algorithm_internal::c_begin(sequence),
+                          middle, container_algorithm_internal::c_end(sequence),
+                          result);
+}
+
+// c_shuffle()
+//
+// Container-based version of the <algorithm> `std::shuffle()` function to
+// randomly shuffle elements within the container using a `gen()` uniform random
+// number generator.
+template <typename RandomAccessContainer, typename UniformRandomBitGenerator>
+void c_shuffle(RandomAccessContainer& c, UniformRandomBitGenerator&& gen) {
+  std::shuffle(container_algorithm_internal::c_begin(c),
+               container_algorithm_internal::c_end(c),
+               std::forward<UniformRandomBitGenerator>(gen));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Partition functions
+//------------------------------------------------------------------------------
+
+// c_is_partitioned()
+//
+// Container-based version of the <algorithm> `std::is_partitioned()` function
+// to test whether all elements in the container for which `pred` returns `true`
+// precede those for which `pred` is `false`.
+template <typename C, typename Pred>
+bool c_is_partitioned(const C& c, Pred&& pred) {
+  return std::is_partitioned(container_algorithm_internal::c_begin(c),
+                             container_algorithm_internal::c_end(c),
+                             std::forward<Pred>(pred));
+}
+
+// c_partition()
+//
+// Container-based version of the <algorithm> `std::partition()` function
+// to rearrange all elements in a container in such a way that all elements for
+// which `pred` returns `true` precede all those for which it returns `false`,
+// returning an iterator to the first element of the second group.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerIter<C> c_partition(C& c, Pred&& pred) {
+  return std::partition(container_algorithm_internal::c_begin(c),
+                        container_algorithm_internal::c_end(c),
+                        std::forward<Pred>(pred));
+}
+
+// c_stable_partition()
+//
+// Container-based version of the <algorithm> `std::stable_partition()` function
+// to rearrange all elements in a container in such a way that all elements for
+// which `pred` returns `true` precede all those for which it returns `false`,
+// preserving the relative ordering between the two groups. The function returns
+// an iterator to the first element of the second group.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerIter<C> c_stable_partition(C& c,
+                                                                  Pred&& pred) {
+  return std::stable_partition(container_algorithm_internal::c_begin(c),
+                               container_algorithm_internal::c_end(c),
+                               std::forward<Pred>(pred));
+}
+
+// c_partition_copy()
+//
+// Container-based version of the <algorithm> `std::partition_copy()` function
+// to partition a container's elements and return them into two iterators: one
+// for which `pred` returns `true`, and one for which `pred` returns `false.`
+
+template <typename C, typename OutputIterator1, typename OutputIterator2,
+          typename Pred>
+std::pair<OutputIterator1, OutputIterator2> c_partition_copy(
+    const C& c, OutputIterator1 out_true, OutputIterator2 out_false,
+    Pred&& pred) {
+  return std::partition_copy(container_algorithm_internal::c_begin(c),
+                             container_algorithm_internal::c_end(c), out_true,
+                             out_false, std::forward<Pred>(pred));
+}
+
+// c_partition_point()
+//
+// Container-based version of the <algorithm> `std::partition_point()` function
+// to return the first element of an already partitioned container for which
+// the given `pred` is not `true`.
+template <typename C, typename Pred>
+container_algorithm_internal::ContainerIter<C> c_partition_point(C& c,
+                                                                 Pred&& pred) {
+  return std::partition_point(container_algorithm_internal::c_begin(c),
+                              container_algorithm_internal::c_end(c),
+                              std::forward<Pred>(pred));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Sorting functions
+//------------------------------------------------------------------------------
+
+// c_sort()
+//
+// Container-based version of the <algorithm> `std::sort()` function
+// to sort elements in ascending order of their values.
+template <typename C>
+void c_sort(C& c) {
+  std::sort(container_algorithm_internal::c_begin(c),
+            container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_sort() for performing a `comp` comparison other than the
+// default `operator<`.
+template <typename C, typename Compare>
+void c_sort(C& c, Compare&& comp) {
+  std::sort(container_algorithm_internal::c_begin(c),
+            container_algorithm_internal::c_end(c),
+            std::forward<Compare>(comp));
+}
+
+// c_stable_sort()
+//
+// Container-based version of the <algorithm> `std::stable_sort()` function
+// to sort elements in ascending order of their values, preserving the order
+// of equivalents.
+template <typename C>
+void c_stable_sort(C& c) {
+  std::stable_sort(container_algorithm_internal::c_begin(c),
+                   container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_stable_sort() for performing a `comp` comparison other than the
+// default `operator<`.
+template <typename C, typename Compare>
+void c_stable_sort(C& c, Compare&& comp) {
+  std::stable_sort(container_algorithm_internal::c_begin(c),
+                   container_algorithm_internal::c_end(c),
+                   std::forward<Compare>(comp));
+}
+
+// c_is_sorted()
+//
+// Container-based version of the <algorithm> `std::is_sorted()` function
+// to evaluate whether the given container is sorted in ascending order.
+template <typename C>
+bool c_is_sorted(const C& c) {
+  return std::is_sorted(container_algorithm_internal::c_begin(c),
+                        container_algorithm_internal::c_end(c));
+}
+
+// c_is_sorted() overload for performing a `comp` comparison other than the
+// default `operator<`.
+template <typename C, typename Compare>
+bool c_is_sorted(const C& c, Compare&& comp) {
+  return std::is_sorted(container_algorithm_internal::c_begin(c),
+                        container_algorithm_internal::c_end(c),
+                        std::forward<Compare>(comp));
+}
+
+// c_partial_sort()
+//
+// Container-based version of the <algorithm> `std::partial_sort()` function
+// to rearrange elements within a container such that elements before `middle`
+// are sorted in ascending order.
+template <typename RandomAccessContainer>
+void c_partial_sort(
+    RandomAccessContainer& sequence,
+    container_algorithm_internal::ContainerIter<RandomAccessContainer> middle) {
+  std::partial_sort(container_algorithm_internal::c_begin(sequence), middle,
+                    container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_partial_sort() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename RandomAccessContainer, typename Compare>
+void c_partial_sort(
+    RandomAccessContainer& sequence,
+    container_algorithm_internal::ContainerIter<RandomAccessContainer> middle,
+    Compare&& comp) {
+  std::partial_sort(container_algorithm_internal::c_begin(sequence), middle,
+                    container_algorithm_internal::c_end(sequence),
+                    std::forward<Compare>(comp));
+}
+
+// c_partial_sort_copy()
+//
+// Container-based version of the <algorithm> `std::partial_sort_copy()`
+// function to sort elements within a container such that elements before
+// `middle` are sorted in ascending order, and return the result within an
+// iterator.
+template <typename C, typename RandomAccessContainer>
+container_algorithm_internal::ContainerIter<RandomAccessContainer>
+c_partial_sort_copy(const C& sequence, RandomAccessContainer& result) {
+  return std::partial_sort_copy(container_algorithm_internal::c_begin(sequence),
+                                container_algorithm_internal::c_end(sequence),
+                                container_algorithm_internal::c_begin(result),
+                                container_algorithm_internal::c_end(result));
+}
+
+// Overload of c_partial_sort_copy() for performing a `comp` comparison other
+// than the default `operator<`.
+template <typename C, typename RandomAccessContainer, typename Compare>
+container_algorithm_internal::ContainerIter<RandomAccessContainer>
+c_partial_sort_copy(const C& sequence, RandomAccessContainer& result,
+                    Compare&& comp) {
+  return std::partial_sort_copy(container_algorithm_internal::c_begin(sequence),
+                                container_algorithm_internal::c_end(sequence),
+                                container_algorithm_internal::c_begin(result),
+                                container_algorithm_internal::c_end(result),
+                                std::forward<Compare>(comp));
+}
+
+// c_is_sorted_until()
+//
+// Container-based version of the <algorithm> `std::is_sorted_until()` function
+// to return the first element within a container that is not sorted in
+// ascending order as an iterator.
+template <typename C>
+container_algorithm_internal::ContainerIter<C> c_is_sorted_until(C& c) {
+  return std::is_sorted_until(container_algorithm_internal::c_begin(c),
+                              container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_is_sorted_until() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename C, typename Compare>
+container_algorithm_internal::ContainerIter<C> c_is_sorted_until(
+    C& c, Compare&& comp) {
+  return std::is_sorted_until(container_algorithm_internal::c_begin(c),
+                              container_algorithm_internal::c_end(c),
+                              std::forward<Compare>(comp));
+}
+
+// c_nth_element()
+//
+// Container-based version of the <algorithm> `std::nth_element()` function
+// to rearrange the elements within a container such that the `nth` element
+// would be in that position in an ordered sequence; other elements may be in
+// any order, except that all preceding `nth` will be less than that element,
+// and all following `nth` will be greater than that element.
+template <typename RandomAccessContainer>
+void c_nth_element(
+    RandomAccessContainer& sequence,
+    container_algorithm_internal::ContainerIter<RandomAccessContainer> nth) {
+  std::nth_element(container_algorithm_internal::c_begin(sequence), nth,
+                   container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_nth_element() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename RandomAccessContainer, typename Compare>
+void c_nth_element(
+    RandomAccessContainer& sequence,
+    container_algorithm_internal::ContainerIter<RandomAccessContainer> nth,
+    Compare&& comp) {
+  std::nth_element(container_algorithm_internal::c_begin(sequence), nth,
+                   container_algorithm_internal::c_end(sequence),
+                   std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Binary Search
+//------------------------------------------------------------------------------
+
+// c_lower_bound()
+//
+// Container-based version of the <algorithm> `std::lower_bound()` function
+// to return an iterator pointing to the first element in a sorted container
+// which does not compare less than `value`.
+template <typename Sequence, typename T>
+container_algorithm_internal::ContainerIter<Sequence> c_lower_bound(
+    Sequence& sequence, T&& value) {
+  return std::lower_bound(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value));
+}
+
+// Overload of c_lower_bound() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename Sequence, typename T, typename Compare>
+container_algorithm_internal::ContainerIter<Sequence> c_lower_bound(
+    Sequence& sequence, T&& value, Compare&& comp) {
+  return std::lower_bound(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value), std::forward<Compare>(comp));
+}
+
+// c_upper_bound()
+//
+// Container-based version of the <algorithm> `std::upper_bound()` function
+// to return an iterator pointing to the first element in a sorted container
+// which is greater than `value`.
+template <typename Sequence, typename T>
+container_algorithm_internal::ContainerIter<Sequence> c_upper_bound(
+    Sequence& sequence, T&& value) {
+  return std::upper_bound(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value));
+}
+
+// Overload of c_upper_bound() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename Sequence, typename T, typename Compare>
+container_algorithm_internal::ContainerIter<Sequence> c_upper_bound(
+    Sequence& sequence, T&& value, Compare&& comp) {
+  return std::upper_bound(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value), std::forward<Compare>(comp));
+}
+
+// c_equal_range()
+//
+// Container-based version of the <algorithm> `std::equal_range()` function
+// to return an iterator pair pointing to the first and last elements in a
+// sorted container which compare equal to `value`.
+template <typename Sequence, typename T>
+container_algorithm_internal::ContainerIterPairType<Sequence, Sequence>
+c_equal_range(Sequence& sequence, T&& value) {
+  return std::equal_range(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value));
+}
+
+// Overload of c_equal_range() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename Sequence, typename T, typename Compare>
+container_algorithm_internal::ContainerIterPairType<Sequence, Sequence>
+c_equal_range(Sequence& sequence, T&& value, Compare&& comp) {
+  return std::equal_range(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<T>(value), std::forward<Compare>(comp));
+}
+
+// c_binary_search()
+//
+// Container-based version of the <algorithm> `std::binary_search()` function
+// to test if any element in the sorted container contains a value equivalent to
+// 'value'.
+template <typename Sequence, typename T>
+bool c_binary_search(Sequence&& sequence, T&& value) {
+  return std::binary_search(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence),
+                            std::forward<T>(value));
+}
+
+// Overload of c_binary_search() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename Sequence, typename T, typename Compare>
+bool c_binary_search(Sequence&& sequence, T&& value, Compare&& comp) {
+  return std::binary_search(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence),
+                            std::forward<T>(value),
+                            std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Merge functions
+//------------------------------------------------------------------------------
+
+// c_merge()
+//
+// Container-based version of the <algorithm> `std::merge()` function
+// to merge two sorted containers into a single sorted iterator.
+template <typename C1, typename C2, typename OutputIterator>
+OutputIterator c_merge(const C1& c1, const C2& c2, OutputIterator result) {
+  return std::merge(container_algorithm_internal::c_begin(c1),
+                    container_algorithm_internal::c_end(c1),
+                    container_algorithm_internal::c_begin(c2),
+                    container_algorithm_internal::c_end(c2), result);
+}
+
+// Overload of c_merge() for performing a `comp` comparison other than
+// the default `operator<`.
+template <typename C1, typename C2, typename OutputIterator, typename Compare>
+OutputIterator c_merge(const C1& c1, const C2& c2, OutputIterator result,
+                       Compare&& comp) {
+  return std::merge(container_algorithm_internal::c_begin(c1),
+                    container_algorithm_internal::c_end(c1),
+                    container_algorithm_internal::c_begin(c2),
+                    container_algorithm_internal::c_end(c2), result,
+                    std::forward<Compare>(comp));
+}
+
+// c_inplace_merge()
+//
+// Container-based version of the <algorithm> `std::inplace_merge()` function
+// to merge a supplied iterator `middle` into a container.
+template <typename C>
+void c_inplace_merge(C& c,
+                     container_algorithm_internal::ContainerIter<C> middle) {
+  std::inplace_merge(container_algorithm_internal::c_begin(c), middle,
+                     container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_inplace_merge() for performing a merge using a `comp` other
+// than `operator<`.
+template <typename C, typename Compare>
+void c_inplace_merge(C& c,
+                     container_algorithm_internal::ContainerIter<C> middle,
+                     Compare&& comp) {
+  std::inplace_merge(container_algorithm_internal::c_begin(c), middle,
+                     container_algorithm_internal::c_end(c),
+                     std::forward<Compare>(comp));
+}
+
+// c_includes()
+//
+// Container-based version of the <algorithm> `std::includes()` function
+// to test whether a sorted container `c1` entirely contains another sorted
+// container `c2`.
+template <typename C1, typename C2>
+bool c_includes(const C1& c1, const C2& c2) {
+  return std::includes(container_algorithm_internal::c_begin(c1),
+                       container_algorithm_internal::c_end(c1),
+                       container_algorithm_internal::c_begin(c2),
+                       container_algorithm_internal::c_end(c2));
+}
+
+// Overload of c_includes() for performing a merge using a `comp` other than
+// `operator<`.
+template <typename C1, typename C2, typename Compare>
+bool c_includes(const C1& c1, const C2& c2, Compare&& comp) {
+  return std::includes(container_algorithm_internal::c_begin(c1),
+                       container_algorithm_internal::c_end(c1),
+                       container_algorithm_internal::c_begin(c2),
+                       container_algorithm_internal::c_end(c2),
+                       std::forward<Compare>(comp));
+}
+
+// c_set_union()
+//
+// Container-based version of the <algorithm> `std::set_union()` function
+// to return an iterator containing the union of two containers; duplicate
+// values are not copied into the output.
+template <typename C1, typename C2, typename OutputIterator,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_union(const C1& c1, const C2& c2, OutputIterator output) {
+  return std::set_union(container_algorithm_internal::c_begin(c1),
+                        container_algorithm_internal::c_end(c1),
+                        container_algorithm_internal::c_begin(c2),
+                        container_algorithm_internal::c_end(c2), output);
+}
+
+// Overload of c_set_union() for performing a merge using a `comp` other than
+// `operator<`.
+template <typename C1, typename C2, typename OutputIterator, typename Compare,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_union(const C1& c1, const C2& c2, OutputIterator output,
+                           Compare&& comp) {
+  return std::set_union(container_algorithm_internal::c_begin(c1),
+                        container_algorithm_internal::c_end(c1),
+                        container_algorithm_internal::c_begin(c2),
+                        container_algorithm_internal::c_end(c2), output,
+                        std::forward<Compare>(comp));
+}
+
+// c_set_intersection()
+//
+// Container-based version of the <algorithm> `std::set_intersection()` function
+// to return an iterator containing the intersection of two containers.
+template <typename C1, typename C2, typename OutputIterator,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_intersection(const C1& c1, const C2& c2,
+                                  OutputIterator output) {
+  return std::set_intersection(container_algorithm_internal::c_begin(c1),
+                               container_algorithm_internal::c_end(c1),
+                               container_algorithm_internal::c_begin(c2),
+                               container_algorithm_internal::c_end(c2), output);
+}
+
+// Overload of c_set_intersection() for performing a merge using a `comp` other
+// than `operator<`.
+template <typename C1, typename C2, typename OutputIterator, typename Compare,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_intersection(const C1& c1, const C2& c2,
+                                  OutputIterator output, Compare&& comp) {
+  return std::set_intersection(container_algorithm_internal::c_begin(c1),
+                               container_algorithm_internal::c_end(c1),
+                               container_algorithm_internal::c_begin(c2),
+                               container_algorithm_internal::c_end(c2), output,
+                               std::forward<Compare>(comp));
+}
+
+// c_set_difference()
+//
+// Container-based version of the <algorithm> `std::set_difference()` function
+// to return an iterator containing elements present in the first container but
+// not in the second.
+template <typename C1, typename C2, typename OutputIterator,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_difference(const C1& c1, const C2& c2,
+                                OutputIterator output) {
+  return std::set_difference(container_algorithm_internal::c_begin(c1),
+                             container_algorithm_internal::c_end(c1),
+                             container_algorithm_internal::c_begin(c2),
+                             container_algorithm_internal::c_end(c2), output);
+}
+
+// Overload of c_set_difference() for performing a merge using a `comp` other
+// than `operator<`.
+template <typename C1, typename C2, typename OutputIterator, typename Compare,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_difference(const C1& c1, const C2& c2,
+                                OutputIterator output, Compare&& comp) {
+  return std::set_difference(container_algorithm_internal::c_begin(c1),
+                             container_algorithm_internal::c_end(c1),
+                             container_algorithm_internal::c_begin(c2),
+                             container_algorithm_internal::c_end(c2), output,
+                             std::forward<Compare>(comp));
+}
+
+// c_set_symmetric_difference()
+//
+// Container-based version of the <algorithm> `std::set_symmetric_difference()`
+// function to return an iterator containing elements present in either one
+// container or the other, but not both.
+template <typename C1, typename C2, typename OutputIterator,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_symmetric_difference(const C1& c1, const C2& c2,
+                                          OutputIterator output) {
+  return std::set_symmetric_difference(
+      container_algorithm_internal::c_begin(c1),
+      container_algorithm_internal::c_end(c1),
+      container_algorithm_internal::c_begin(c2),
+      container_algorithm_internal::c_end(c2), output);
+}
+
+// Overload of c_set_symmetric_difference() for performing a merge using a
+// `comp` other than `operator<`.
+template <typename C1, typename C2, typename OutputIterator, typename Compare,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C1>::value,
+              void>::type,
+          typename = typename std::enable_if<
+              !container_algorithm_internal::IsUnorderedContainer<C2>::value,
+              void>::type>
+OutputIterator c_set_symmetric_difference(const C1& c1, const C2& c2,
+                                          OutputIterator output,
+                                          Compare&& comp) {
+  return std::set_symmetric_difference(
+      container_algorithm_internal::c_begin(c1),
+      container_algorithm_internal::c_end(c1),
+      container_algorithm_internal::c_begin(c2),
+      container_algorithm_internal::c_end(c2), output,
+      std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+// <algorithm> Heap functions
+//------------------------------------------------------------------------------
+
+// c_push_heap()
+//
+// Container-based version of the <algorithm> `std::push_heap()` function
+// to push a value onto a container heap.
+template <typename RandomAccessContainer>
+void c_push_heap(RandomAccessContainer& sequence) {
+  std::push_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_push_heap() for performing a push operation on a heap using a
+// `comp` other than `operator<`.
+template <typename RandomAccessContainer, typename Compare>
+void c_push_heap(RandomAccessContainer& sequence, Compare&& comp) {
+  std::push_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence),
+                 std::forward<Compare>(comp));
+}
+
+// c_pop_heap()
+//
+// Container-based version of the <algorithm> `std::pop_heap()` function
+// to pop a value from a heap container.
+template <typename RandomAccessContainer>
+void c_pop_heap(RandomAccessContainer& sequence) {
+  std::pop_heap(container_algorithm_internal::c_begin(sequence),
+                container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_pop_heap() for performing a pop operation on a heap using a
+// `comp` other than `operator<`.
+template <typename RandomAccessContainer, typename Compare>
+void c_pop_heap(RandomAccessContainer& sequence, Compare&& comp) {
+  std::pop_heap(container_algorithm_internal::c_begin(sequence),
+                container_algorithm_internal::c_end(sequence),
+                std::forward<Compare>(comp));
+}
+
+// c_make_heap()
+//
+// Container-based version of the <algorithm> `std::make_heap()` function
+// to make a container a heap.
+template <typename RandomAccessContainer>
+void c_make_heap(RandomAccessContainer& sequence) {
+  std::make_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_make_heap() for performing heap comparisons using a
+// `comp` other than `operator<`
+template <typename RandomAccessContainer, typename Compare>
+void c_make_heap(RandomAccessContainer& sequence, Compare&& comp) {
+  std::make_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence),
+                 std::forward<Compare>(comp));
+}
+
+// c_sort_heap()
+//
+// Container-based version of the <algorithm> `std::sort_heap()` function
+// to sort a heap into ascending order (after which it is no longer a heap).
+template <typename RandomAccessContainer>
+void c_sort_heap(RandomAccessContainer& sequence) {
+  std::sort_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_sort_heap() for performing heap comparisons using a
+// `comp` other than `operator<`
+template <typename RandomAccessContainer, typename Compare>
+void c_sort_heap(RandomAccessContainer& sequence, Compare&& comp) {
+  std::sort_heap(container_algorithm_internal::c_begin(sequence),
+                 container_algorithm_internal::c_end(sequence),
+                 std::forward<Compare>(comp));
+}
+
+// c_is_heap()
+//
+// Container-based version of the <algorithm> `std::is_heap()` function
+// to check whether the given container is a heap.
+template <typename RandomAccessContainer>
+bool c_is_heap(const RandomAccessContainer& sequence) {
+  return std::is_heap(container_algorithm_internal::c_begin(sequence),
+                      container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_is_heap() for performing heap comparisons using a
+// `comp` other than `operator<`
+template <typename RandomAccessContainer, typename Compare>
+bool c_is_heap(const RandomAccessContainer& sequence, Compare&& comp) {
+  return std::is_heap(container_algorithm_internal::c_begin(sequence),
+                      container_algorithm_internal::c_end(sequence),
+                      std::forward<Compare>(comp));
+}
+
+// c_is_heap_until()
+//
+// Container-based version of the <algorithm> `std::is_heap_until()` function
+// to find the first element in a given container which is not in heap order.
+template <typename RandomAccessContainer>
+container_algorithm_internal::ContainerIter<RandomAccessContainer>
+c_is_heap_until(RandomAccessContainer& sequence) {
+  return std::is_heap_until(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_is_heap_until() for performing heap comparisons using a
+// `comp` other than `operator<`
+template <typename RandomAccessContainer, typename Compare>
+container_algorithm_internal::ContainerIter<RandomAccessContainer>
+c_is_heap_until(RandomAccessContainer& sequence, Compare&& comp) {
+  return std::is_heap_until(container_algorithm_internal::c_begin(sequence),
+                            container_algorithm_internal::c_end(sequence),
+                            std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+//  <algorithm> Min/max
+//------------------------------------------------------------------------------
+
+// c_min_element()
+//
+// Container-based version of the <algorithm> `std::min_element()` function
+// to return an iterator pointing to the element with the smallest value, using
+// `operator<` to make the comparisons.
+template <typename Sequence>
+container_algorithm_internal::ContainerIter<Sequence> c_min_element(
+    Sequence& sequence) {
+  return std::min_element(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_min_element() for performing a `comp` comparison other than
+// `operator<`.
+template <typename Sequence, typename Compare>
+container_algorithm_internal::ContainerIter<Sequence> c_min_element(
+    Sequence& sequence, Compare&& comp) {
+  return std::min_element(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<Compare>(comp));
+}
+
+// c_max_element()
+//
+// Container-based version of the <algorithm> `std::max_element()` function
+// to return an iterator pointing to the element with the largest value, using
+// `operator<` to make the comparisons.
+template <typename Sequence>
+container_algorithm_internal::ContainerIter<Sequence> c_max_element(
+    Sequence& sequence) {
+  return std::max_element(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence));
+}
+
+// Overload of c_max_element() for performing a `comp` comparison other than
+// `operator<`.
+template <typename Sequence, typename Compare>
+container_algorithm_internal::ContainerIter<Sequence> c_max_element(
+    Sequence& sequence, Compare&& comp) {
+  return std::max_element(container_algorithm_internal::c_begin(sequence),
+                          container_algorithm_internal::c_end(sequence),
+                          std::forward<Compare>(comp));
+}
+
+// c_minmax_element()
+//
+// Container-based version of the <algorithm> `std::minmax_element()` function
+// to return a pair of iterators pointing to the elements containing the
+// smallest and largest values, respectively, using `operator<` to make the
+// comparisons.
+template <typename C>
+container_algorithm_internal::ContainerIterPairType<C, C>
+c_minmax_element(C& c) {
+  return std::minmax_element(container_algorithm_internal::c_begin(c),
+                             container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_minmax_element() for performing `comp` comparisons other than
+// `operator<`.
+template <typename C, typename Compare>
+container_algorithm_internal::ContainerIterPairType<C, C>
+c_minmax_element(C& c, Compare&& comp) {
+  return std::minmax_element(container_algorithm_internal::c_begin(c),
+                             container_algorithm_internal::c_end(c),
+                             std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+//  <algorithm> Lexicographical Comparisons
+//------------------------------------------------------------------------------
+
+// c_lexicographical_compare()
+//
+// Container-based version of the <algorithm> `std::lexicographical_compare()`
+// function to lexicographically compare (e.g. sort words alphabetically) two
+// container sequences. The comparison is performed using `operator<`. Note
+// that capital letters ("A-Z") have ASCII values less than lowercase letters
+// ("a-z").
+template <typename Sequence1, typename Sequence2>
+bool c_lexicographical_compare(Sequence1&& sequence1, Sequence2&& sequence2) {
+  return std::lexicographical_compare(
+      container_algorithm_internal::c_begin(sequence1),
+      container_algorithm_internal::c_end(sequence1),
+      container_algorithm_internal::c_begin(sequence2),
+      container_algorithm_internal::c_end(sequence2));
+}
+
+// Overload of c_lexicographical_compare() for performing a lexicographical
+// comparison using a `comp` operator instead of `operator<`.
+template <typename Sequence1, typename Sequence2, typename Compare>
+bool c_lexicographical_compare(Sequence1&& sequence1, Sequence2&& sequence2,
+                               Compare&& comp) {
+  return std::lexicographical_compare(
+      container_algorithm_internal::c_begin(sequence1),
+      container_algorithm_internal::c_end(sequence1),
+      container_algorithm_internal::c_begin(sequence2),
+      container_algorithm_internal::c_end(sequence2),
+      std::forward<Compare>(comp));
+}
+
+// c_next_permutation()
+//
+// Container-based version of the <algorithm> `std::next_permutation()` function
+// to rearrange a container's elements into the next lexicographically greater
+// permutation.
+template <typename C>
+bool c_next_permutation(C& c) {
+  return std::next_permutation(container_algorithm_internal::c_begin(c),
+                               container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_next_permutation() for performing a lexicographical
+// comparison using a `comp` operator instead of `operator<`.
+template <typename C, typename Compare>
+bool c_next_permutation(C& c, Compare&& comp) {
+  return std::next_permutation(container_algorithm_internal::c_begin(c),
+                               container_algorithm_internal::c_end(c),
+                               std::forward<Compare>(comp));
+}
+
+// c_prev_permutation()
+//
+// Container-based version of the <algorithm> `std::prev_permutation()` function
+// to rearrange a container's elements into the next lexicographically lesser
+// permutation.
+template <typename C>
+bool c_prev_permutation(C& c) {
+  return std::prev_permutation(container_algorithm_internal::c_begin(c),
+                               container_algorithm_internal::c_end(c));
+}
+
+// Overload of c_prev_permutation() for performing a lexicographical
+// comparison using a `comp` operator instead of `operator<`.
+template <typename C, typename Compare>
+bool c_prev_permutation(C& c, Compare&& comp) {
+  return std::prev_permutation(container_algorithm_internal::c_begin(c),
+                               container_algorithm_internal::c_end(c),
+                               std::forward<Compare>(comp));
+}
+
+//------------------------------------------------------------------------------
+// <numeric> algorithms
+//------------------------------------------------------------------------------
+
+// c_iota()
+//
+// Container-based version of the <algorithm> `std::iota()` function
+// to compute successive values of `value`, as if incremented with `++value`
+// after each element is written. and write them to the container.
+template <typename Sequence, typename T>
+void c_iota(Sequence& sequence, T&& value) {
+  std::iota(container_algorithm_internal::c_begin(sequence),
+            container_algorithm_internal::c_end(sequence),
+            std::forward<T>(value));
+}
+// c_accumulate()
+//
+// Container-based version of the <algorithm> `std::accumulate()` function
+// to accumulate the element values of a container to `init` and return that
+// accumulation by value.
+//
+// Note: Due to a language technicality this function has return type
+// absl::decay_t<T>. As a user of this function you can casually read
+// this as "returns T by value" and assume it does the right thing.
+template <typename Sequence, typename T>
+decay_t<T> c_accumulate(const Sequence& sequence, T&& init) {
+  return std::accumulate(container_algorithm_internal::c_begin(sequence),
+                         container_algorithm_internal::c_end(sequence),
+                         std::forward<T>(init));
+}
+
+// Overload of c_accumulate() for using a binary operations other than
+// addition for computing the accumulation.
+template <typename Sequence, typename T, typename BinaryOp>
+decay_t<T> c_accumulate(const Sequence& sequence, T&& init,
+                        BinaryOp&& binary_op) {
+  return std::accumulate(container_algorithm_internal::c_begin(sequence),
+                         container_algorithm_internal::c_end(sequence),
+                         std::forward<T>(init),
+                         std::forward<BinaryOp>(binary_op));
+}
+
+// c_inner_product()
+//
+// Container-based version of the <algorithm> `std::inner_product()` function
+// to compute the cumulative inner product of container element pairs.
+//
+// Note: Due to a language technicality this function has return type
+// absl::decay_t<T>. As a user of this function you can casually read
+// this as "returns T by value" and assume it does the right thing.
+template <typename Sequence1, typename Sequence2, typename T>
+decay_t<T> c_inner_product(const Sequence1& factors1, const Sequence2& factors2,
+                           T&& sum) {
+  return std::inner_product(container_algorithm_internal::c_begin(factors1),
+                            container_algorithm_internal::c_end(factors1),
+                            container_algorithm_internal::c_begin(factors2),
+                            std::forward<T>(sum));
+}
+
+// Overload of c_inner_product() for using binary operations other than
+// `operator+` (for computing the accumulation) and `operator*` (for computing
+// the product between the two container's element pair).
+template <typename Sequence1, typename Sequence2, typename T,
+          typename BinaryOp1, typename BinaryOp2>
+decay_t<T> c_inner_product(const Sequence1& factors1, const Sequence2& factors2,
+                           T&& sum, BinaryOp1&& op1, BinaryOp2&& op2) {
+  return std::inner_product(container_algorithm_internal::c_begin(factors1),
+                            container_algorithm_internal::c_end(factors1),
+                            container_algorithm_internal::c_begin(factors2),
+                            std::forward<T>(sum), std::forward<BinaryOp1>(op1),
+                            std::forward<BinaryOp2>(op2));
+}
+
+// c_adjacent_difference()
+//
+// Container-based version of the <algorithm> `std::adjacent_difference()`
+// function to compute the difference between each element and the one preceding
+// it and write it to an iterator.
+template <typename InputSequence, typename OutputIt>
+OutputIt c_adjacent_difference(const InputSequence& input,
+                               OutputIt output_first) {
+  return std::adjacent_difference(container_algorithm_internal::c_begin(input),
+                                  container_algorithm_internal::c_end(input),
+                                  output_first);
+}
+
+// Overload of c_adjacent_difference() for using a binary operation other than
+// subtraction to compute the adjacent difference.
+template <typename InputSequence, typename OutputIt, typename BinaryOp>
+OutputIt c_adjacent_difference(const InputSequence& input,
+                               OutputIt output_first, BinaryOp&& op) {
+  return std::adjacent_difference(container_algorithm_internal::c_begin(input),
+                                  container_algorithm_internal::c_end(input),
+                                  output_first, std::forward<BinaryOp>(op));
+}
+
+// c_partial_sum()
+//
+// Container-based version of the <algorithm> `std::partial_sum()` function
+// to compute the partial sum of the elements in a sequence and write them
+// to an iterator. The partial sum is the sum of all element values so far in
+// the sequence.
+template <typename InputSequence, typename OutputIt>
+OutputIt c_partial_sum(const InputSequence& input, OutputIt output_first) {
+  return std::partial_sum(container_algorithm_internal::c_begin(input),
+                          container_algorithm_internal::c_end(input),
+                          output_first);
+}
+
+// Overload of c_partial_sum() for using a binary operation other than addition
+// to compute the "partial sum".
+template <typename InputSequence, typename OutputIt, typename BinaryOp>
+OutputIt c_partial_sum(const InputSequence& input, OutputIt output_first,
+                       BinaryOp&& op) {
+  return std::partial_sum(container_algorithm_internal::c_begin(input),
+                          container_algorithm_internal::c_end(input),
+                          output_first, std::forward<BinaryOp>(op));
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_ALGORITHM_CONTAINER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/attributes.h b/ChattingApp 000/Pods/abseil/absl/base/attributes.h
new file mode 100644
index 0000000..ff13862
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/attributes.h	
@@ -0,0 +1,621 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This header file defines macros for declaring attributes for functions,
+// types, and variables.
+//
+// These macros are used within Abseil and allow the compiler to optimize, where
+// applicable, certain function calls.
+//
+// This file is used for both C and C++!
+//
+// Most macros here are exposing GCC or Clang features, and are stubbed out for
+// other compilers.
+//
+// GCC attributes documentation:
+//   https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Function-Attributes.html
+//   https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Variable-Attributes.html
+//   https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Type-Attributes.html
+//
+// Most attributes in this file are already supported by GCC 4.7. However, some
+// of them are not supported in older version of Clang. Thus, we check
+// `__has_attribute()` first. If the check fails, we check if we are on GCC and
+// assume the attribute exists on GCC (which is verified on GCC 4.7).
+//
+// -----------------------------------------------------------------------------
+// Sanitizer Attributes
+// -----------------------------------------------------------------------------
+//
+// Sanitizer-related attributes are not "defined" in this file (and indeed
+// are not defined as such in any file). To utilize the following
+// sanitizer-related attributes within your builds, define the following macros
+// within your build using a `-D` flag, along with the given value for
+// `-fsanitize`:
+//
+//   * `ADDRESS_SANITIZER` + `-fsanitize=address` (Clang, GCC 4.8)
+//   * `MEMORY_SANITIZER` + `-fsanitize=memory` (Clang-only)
+//   * `THREAD_SANITIZER + `-fsanitize=thread` (Clang, GCC 4.8+)
+//   * `UNDEFINED_BEHAVIOR_SANITIZER` + `-fsanitize=undefined` (Clang, GCC 4.9+)
+//   * `CONTROL_FLOW_INTEGRITY` + -fsanitize=cfi (Clang-only)
+//
+// Example:
+//
+//   // Enable branches in the Abseil code that are tagged for ASan:
+//   $ bazel build --copt=-DADDRESS_SANITIZER --copt=-fsanitize=address
+//     --linkopt=-fsanitize=address *target*
+//
+// Since these macro names are only supported by GCC and Clang, we only check
+// for `__GNUC__` (GCC or Clang) and the above macros.
+#ifndef ABSL_BASE_ATTRIBUTES_H_
+#define ABSL_BASE_ATTRIBUTES_H_
+
+// ABSL_HAVE_ATTRIBUTE
+//
+// A function-like feature checking macro that is a wrapper around
+// `__has_attribute`, which is defined by GCC 5+ and Clang and evaluates to a
+// nonzero constant integer if the attribute is supported or 0 if not.
+//
+// It evaluates to zero if `__has_attribute` is not defined by the compiler.
+//
+// GCC: https://gcc.gnu.org/gcc-5/changes.html
+// Clang: https://clang.llvm.org/docs/LanguageExtensions.html
+#ifdef __has_attribute
+#define ABSL_HAVE_ATTRIBUTE(x) __has_attribute(x)
+#else
+#define ABSL_HAVE_ATTRIBUTE(x) 0
+#endif
+
+// ABSL_HAVE_CPP_ATTRIBUTE
+//
+// A function-like feature checking macro that accepts C++11 style attributes.
+// It's a wrapper around `__has_cpp_attribute`, defined by ISO C++ SD-6
+// (https://en.cppreference.com/w/cpp/experimental/feature_test). If we don't
+// find `__has_cpp_attribute`, will evaluate to 0.
+#if defined(__cplusplus) && defined(__has_cpp_attribute)
+// NOTE: requiring __cplusplus above should not be necessary, but
+// works around https://bugs.llvm.org/show_bug.cgi?id=23435.
+#define ABSL_HAVE_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
+#else
+#define ABSL_HAVE_CPP_ATTRIBUTE(x) 0
+#endif
+
+// -----------------------------------------------------------------------------
+// Function Attributes
+// -----------------------------------------------------------------------------
+//
+// GCC: https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
+// Clang: https://clang.llvm.org/docs/AttributeReference.html
+
+// ABSL_PRINTF_ATTRIBUTE
+// ABSL_SCANF_ATTRIBUTE
+//
+// Tells the compiler to perform `printf` format string checking if the
+// compiler supports it; see the 'format' attribute in
+// <https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Function-Attributes.html>.
+//
+// Note: As the GCC manual states, "[s]ince non-static C++ methods
+// have an implicit 'this' argument, the arguments of such methods
+// should be counted from two, not one."
+#if ABSL_HAVE_ATTRIBUTE(format) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_PRINTF_ATTRIBUTE(string_index, first_to_check) \
+  __attribute__((__format__(__printf__, string_index, first_to_check)))
+#define ABSL_SCANF_ATTRIBUTE(string_index, first_to_check) \
+  __attribute__((__format__(__scanf__, string_index, first_to_check)))
+#else
+#define ABSL_PRINTF_ATTRIBUTE(string_index, first_to_check)
+#define ABSL_SCANF_ATTRIBUTE(string_index, first_to_check)
+#endif
+
+// ABSL_ATTRIBUTE_ALWAYS_INLINE
+// ABSL_ATTRIBUTE_NOINLINE
+//
+// Forces functions to either inline or not inline. Introduced in gcc 3.1.
+#if ABSL_HAVE_ATTRIBUTE(always_inline) || \
+    (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_ALWAYS_INLINE __attribute__((always_inline))
+#define ABSL_HAVE_ATTRIBUTE_ALWAYS_INLINE 1
+#else
+#define ABSL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+#if ABSL_HAVE_ATTRIBUTE(noinline) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_NOINLINE __attribute__((noinline))
+#define ABSL_HAVE_ATTRIBUTE_NOINLINE 1
+#else
+#define ABSL_ATTRIBUTE_NOINLINE
+#endif
+
+// ABSL_ATTRIBUTE_NO_TAIL_CALL
+//
+// Prevents the compiler from optimizing away stack frames for functions which
+// end in a call to another function.
+#if ABSL_HAVE_ATTRIBUTE(disable_tail_calls)
+#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 1
+#define ABSL_ATTRIBUTE_NO_TAIL_CALL __attribute__((disable_tail_calls))
+#elif defined(__GNUC__) && !defined(__clang__)
+#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 1
+#define ABSL_ATTRIBUTE_NO_TAIL_CALL \
+  __attribute__((optimize("no-optimize-sibling-calls")))
+#else
+#define ABSL_ATTRIBUTE_NO_TAIL_CALL
+#define ABSL_HAVE_ATTRIBUTE_NO_TAIL_CALL 0
+#endif
+
+// ABSL_ATTRIBUTE_WEAK
+//
+// Tags a function as weak for the purposes of compilation and linking.
+// Weak attributes currently do not work properly in LLVM's Windows backend,
+// so disable them there. See https://bugs.llvm.org/show_bug.cgi?id=37598
+// for further information.
+// The MinGW compiler doesn't complain about the weak attribute until the link
+// step, presumably because Windows doesn't use ELF binaries.
+#if (ABSL_HAVE_ATTRIBUTE(weak) ||                   \
+     (defined(__GNUC__) && !defined(__clang__))) && \
+    !(defined(__llvm__) && defined(_WIN32)) && !defined(__MINGW32__)
+#undef ABSL_ATTRIBUTE_WEAK
+#define ABSL_ATTRIBUTE_WEAK __attribute__((weak))
+#define ABSL_HAVE_ATTRIBUTE_WEAK 1
+#else
+#define ABSL_ATTRIBUTE_WEAK
+#define ABSL_HAVE_ATTRIBUTE_WEAK 0
+#endif
+
+// ABSL_ATTRIBUTE_NONNULL
+//
+// Tells the compiler either (a) that a particular function parameter
+// should be a non-null pointer, or (b) that all pointer arguments should
+// be non-null.
+//
+// Note: As the GCC manual states, "[s]ince non-static C++ methods
+// have an implicit 'this' argument, the arguments of such methods
+// should be counted from two, not one."
+//
+// Args are indexed starting at 1.
+//
+// For non-static class member functions, the implicit `this` argument
+// is arg 1, and the first explicit argument is arg 2. For static class member
+// functions, there is no implicit `this`, and the first explicit argument is
+// arg 1.
+//
+// Example:
+//
+//   /* arg_a cannot be null, but arg_b can */
+//   void Function(void* arg_a, void* arg_b) ABSL_ATTRIBUTE_NONNULL(1);
+//
+//   class C {
+//     /* arg_a cannot be null, but arg_b can */
+//     void Method(void* arg_a, void* arg_b) ABSL_ATTRIBUTE_NONNULL(2);
+//
+//     /* arg_a cannot be null, but arg_b can */
+//     static void StaticMethod(void* arg_a, void* arg_b)
+//     ABSL_ATTRIBUTE_NONNULL(1);
+//   };
+//
+// If no arguments are provided, then all pointer arguments should be non-null.
+//
+//  /* No pointer arguments may be null. */
+//  void Function(void* arg_a, void* arg_b, int arg_c) ABSL_ATTRIBUTE_NONNULL();
+//
+// NOTE: The GCC nonnull attribute actually accepts a list of arguments, but
+// ABSL_ATTRIBUTE_NONNULL does not.
+#if ABSL_HAVE_ATTRIBUTE(nonnull) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_NONNULL(arg_index) __attribute__((nonnull(arg_index)))
+#else
+#define ABSL_ATTRIBUTE_NONNULL(...)
+#endif
+
+// ABSL_ATTRIBUTE_NORETURN
+//
+// Tells the compiler that a given function never returns.
+#if ABSL_HAVE_ATTRIBUTE(noreturn) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_NORETURN __attribute__((noreturn))
+#elif defined(_MSC_VER)
+#define ABSL_ATTRIBUTE_NORETURN __declspec(noreturn)
+#else
+#define ABSL_ATTRIBUTE_NORETURN
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS
+//
+// Tells the AddressSanitizer (or other memory testing tools) to ignore a given
+// function. Useful for cases when a function reads random locations on stack,
+// calls _exit from a cloned subprocess, deliberately accesses buffer
+// out of bounds or does other scary things with memory.
+// NOTE: GCC supports AddressSanitizer(asan) since 4.8.
+// https://gcc.gnu.org/gcc-4.8/changes.html
+#if defined(__GNUC__)
+#define ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY
+//
+// Tells the  MemorySanitizer to relax the handling of a given function. All
+// "Use of uninitialized value" warnings from such functions will be suppressed,
+// and all values loaded from memory will be considered fully initialized.
+// This attribute is similar to the ADDRESS_SANITIZER attribute above, but deals
+// with initialized-ness rather than addressability issues.
+// NOTE: MemorySanitizer(msan) is supported by Clang but not GCC.
+#if defined(__clang__)
+#define ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize_memory))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_THREAD
+//
+// Tells the ThreadSanitizer to not instrument a given function.
+// NOTE: GCC supports ThreadSanitizer(tsan) since 4.8.
+// https://gcc.gnu.org/gcc-4.8/changes.html
+#if defined(__GNUC__)
+#define ABSL_ATTRIBUTE_NO_SANITIZE_THREAD __attribute__((no_sanitize_thread))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_THREAD
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED
+//
+// Tells the UndefinedSanitizer to ignore a given function. Useful for cases
+// where certain behavior (eg. division by zero) is being used intentionally.
+// NOTE: GCC supports UndefinedBehaviorSanitizer(ubsan) since 4.9.
+// https://gcc.gnu.org/gcc-4.9/changes.html
+#if defined(__GNUC__) && \
+    (defined(UNDEFINED_BEHAVIOR_SANITIZER) || defined(ADDRESS_SANITIZER))
+#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED \
+  __attribute__((no_sanitize("undefined")))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_UNDEFINED
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_CFI
+//
+// Tells the ControlFlowIntegrity sanitizer to not instrument a given function.
+// See https://clang.llvm.org/docs/ControlFlowIntegrity.html for details.
+#if defined(__GNUC__) && defined(CONTROL_FLOW_INTEGRITY)
+#define ABSL_ATTRIBUTE_NO_SANITIZE_CFI __attribute__((no_sanitize("cfi")))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_CFI
+#endif
+
+// ABSL_ATTRIBUTE_NO_SANITIZE_SAFESTACK
+//
+// Tells the SafeStack to not instrument a given function.
+// See https://clang.llvm.org/docs/SafeStack.html for details.
+#if defined(__GNUC__) && defined(SAFESTACK_SANITIZER)
+#define ABSL_ATTRIBUTE_NO_SANITIZE_SAFESTACK \
+  __attribute__((no_sanitize("safe-stack")))
+#else
+#define ABSL_ATTRIBUTE_NO_SANITIZE_SAFESTACK
+#endif
+
+// ABSL_ATTRIBUTE_RETURNS_NONNULL
+//
+// Tells the compiler that a particular function never returns a null pointer.
+#if ABSL_HAVE_ATTRIBUTE(returns_nonnull) || \
+    (defined(__GNUC__) && \
+     (__GNUC__ > 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)) && \
+     !defined(__clang__))
+#define ABSL_ATTRIBUTE_RETURNS_NONNULL __attribute__((returns_nonnull))
+#else
+#define ABSL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+// ABSL_HAVE_ATTRIBUTE_SECTION
+//
+// Indicates whether labeled sections are supported. Weak symbol support is
+// a prerequisite. Labeled sections are not supported on Darwin/iOS.
+#ifdef ABSL_HAVE_ATTRIBUTE_SECTION
+#error ABSL_HAVE_ATTRIBUTE_SECTION cannot be directly set
+#elif (ABSL_HAVE_ATTRIBUTE(section) ||                \
+       (defined(__GNUC__) && !defined(__clang__))) && \
+    !defined(__APPLE__) && ABSL_HAVE_ATTRIBUTE_WEAK
+#define ABSL_HAVE_ATTRIBUTE_SECTION 1
+
+// ABSL_ATTRIBUTE_SECTION
+//
+// Tells the compiler/linker to put a given function into a section and define
+// `__start_ ## name` and `__stop_ ## name` symbols to bracket the section.
+// This functionality is supported by GNU linker.  Any function annotated with
+// `ABSL_ATTRIBUTE_SECTION` must not be inlined, or it will be placed into
+// whatever section its caller is placed into.
+//
+#ifndef ABSL_ATTRIBUTE_SECTION
+#define ABSL_ATTRIBUTE_SECTION(name) \
+  __attribute__((section(#name))) __attribute__((noinline))
+#endif
+
+
+// ABSL_ATTRIBUTE_SECTION_VARIABLE
+//
+// Tells the compiler/linker to put a given variable into a section and define
+// `__start_ ## name` and `__stop_ ## name` symbols to bracket the section.
+// This functionality is supported by GNU linker.
+#ifndef ABSL_ATTRIBUTE_SECTION_VARIABLE
+#define ABSL_ATTRIBUTE_SECTION_VARIABLE(name) __attribute__((section(#name)))
+#endif
+
+// ABSL_DECLARE_ATTRIBUTE_SECTION_VARS
+//
+// A weak section declaration to be used as a global declaration
+// for ABSL_ATTRIBUTE_SECTION_START|STOP(name) to compile and link
+// even without functions with ABSL_ATTRIBUTE_SECTION(name).
+// ABSL_DEFINE_ATTRIBUTE_SECTION should be in the exactly one file; it's
+// a no-op on ELF but not on Mach-O.
+//
+#ifndef ABSL_DECLARE_ATTRIBUTE_SECTION_VARS
+#define ABSL_DECLARE_ATTRIBUTE_SECTION_VARS(name) \
+  extern char __start_##name[] ABSL_ATTRIBUTE_WEAK;    \
+  extern char __stop_##name[] ABSL_ATTRIBUTE_WEAK
+#endif
+#ifndef ABSL_DEFINE_ATTRIBUTE_SECTION_VARS
+#define ABSL_INIT_ATTRIBUTE_SECTION_VARS(name)
+#define ABSL_DEFINE_ATTRIBUTE_SECTION_VARS(name)
+#endif
+
+// ABSL_ATTRIBUTE_SECTION_START
+//
+// Returns `void*` pointers to start/end of a section of code with
+// functions having ABSL_ATTRIBUTE_SECTION(name).
+// Returns 0 if no such functions exist.
+// One must ABSL_DECLARE_ATTRIBUTE_SECTION_VARS(name) for this to compile and
+// link.
+//
+#define ABSL_ATTRIBUTE_SECTION_START(name) \
+  (reinterpret_cast<void *>(__start_##name))
+#define ABSL_ATTRIBUTE_SECTION_STOP(name) \
+  (reinterpret_cast<void *>(__stop_##name))
+
+#else  // !ABSL_HAVE_ATTRIBUTE_SECTION
+
+#define ABSL_HAVE_ATTRIBUTE_SECTION 0
+
+// provide dummy definitions
+#define ABSL_ATTRIBUTE_SECTION(name)
+#define ABSL_ATTRIBUTE_SECTION_VARIABLE(name)
+#define ABSL_INIT_ATTRIBUTE_SECTION_VARS(name)
+#define ABSL_DEFINE_ATTRIBUTE_SECTION_VARS(name)
+#define ABSL_DECLARE_ATTRIBUTE_SECTION_VARS(name)
+#define ABSL_ATTRIBUTE_SECTION_START(name) (reinterpret_cast<void *>(0))
+#define ABSL_ATTRIBUTE_SECTION_STOP(name) (reinterpret_cast<void *>(0))
+
+#endif  // ABSL_ATTRIBUTE_SECTION
+
+// ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC
+//
+// Support for aligning the stack on 32-bit x86.
+#if ABSL_HAVE_ATTRIBUTE(force_align_arg_pointer) || \
+    (defined(__GNUC__) && !defined(__clang__))
+#if defined(__i386__)
+#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC \
+  __attribute__((force_align_arg_pointer))
+#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0)
+#elif defined(__x86_64__)
+#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (1)
+#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC
+#else  // !__i386__ && !__x86_64
+#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0)
+#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC
+#endif  // __i386__
+#else
+#define ABSL_ATTRIBUTE_STACK_ALIGN_FOR_OLD_LIBC
+#define ABSL_REQUIRE_STACK_ALIGN_TRAMPOLINE (0)
+#endif
+
+// ABSL_MUST_USE_RESULT
+//
+// Tells the compiler to warn about unused results.
+//
+// When annotating a function, it must appear as the first part of the
+// declaration or definition. The compiler will warn if the return value from
+// such a function is unused:
+//
+//   ABSL_MUST_USE_RESULT Sprocket* AllocateSprocket();
+//   AllocateSprocket();  // Triggers a warning.
+//
+// When annotating a class, it is equivalent to annotating every function which
+// returns an instance.
+//
+//   class ABSL_MUST_USE_RESULT Sprocket {};
+//   Sprocket();  // Triggers a warning.
+//
+//   Sprocket MakeSprocket();
+//   MakeSprocket();  // Triggers a warning.
+//
+// Note that references and pointers are not instances:
+//
+//   Sprocket* SprocketPointer();
+//   SprocketPointer();  // Does *not* trigger a warning.
+//
+// ABSL_MUST_USE_RESULT allows using cast-to-void to suppress the unused result
+// warning. For that, warn_unused_result is used only for clang but not for gcc.
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425
+//
+// Note: past advice was to place the macro after the argument list.
+#if ABSL_HAVE_ATTRIBUTE(nodiscard)
+#define ABSL_MUST_USE_RESULT [[nodiscard]]
+#elif defined(__clang__) && ABSL_HAVE_ATTRIBUTE(warn_unused_result)
+#define ABSL_MUST_USE_RESULT __attribute__((warn_unused_result))
+#else
+#define ABSL_MUST_USE_RESULT
+#endif
+
+// ABSL_ATTRIBUTE_HOT, ABSL_ATTRIBUTE_COLD
+//
+// Tells GCC that a function is hot or cold. GCC can use this information to
+// improve static analysis, i.e. a conditional branch to a cold function
+// is likely to be not-taken.
+// This annotation is used for function declarations.
+//
+// Example:
+//
+//   int foo() ABSL_ATTRIBUTE_HOT;
+#if ABSL_HAVE_ATTRIBUTE(hot) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_HOT __attribute__((hot))
+#else
+#define ABSL_ATTRIBUTE_HOT
+#endif
+
+#if ABSL_HAVE_ATTRIBUTE(cold) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_COLD __attribute__((cold))
+#else
+#define ABSL_ATTRIBUTE_COLD
+#endif
+
+// ABSL_XRAY_ALWAYS_INSTRUMENT, ABSL_XRAY_NEVER_INSTRUMENT, ABSL_XRAY_LOG_ARGS
+//
+// We define the ABSL_XRAY_ALWAYS_INSTRUMENT and ABSL_XRAY_NEVER_INSTRUMENT
+// macro used as an attribute to mark functions that must always or never be
+// instrumented by XRay. Currently, this is only supported in Clang/LLVM.
+//
+// For reference on the LLVM XRay instrumentation, see
+// http://llvm.org/docs/XRay.html.
+//
+// A function with the XRAY_ALWAYS_INSTRUMENT macro attribute in its declaration
+// will always get the XRay instrumentation sleds. These sleds may introduce
+// some binary size and runtime overhead and must be used sparingly.
+//
+// These attributes only take effect when the following conditions are met:
+//
+//   * The file/target is built in at least C++11 mode, with a Clang compiler
+//     that supports XRay attributes.
+//   * The file/target is built with the -fxray-instrument flag set for the
+//     Clang/LLVM compiler.
+//   * The function is defined in the translation unit (the compiler honors the
+//     attribute in either the definition or the declaration, and must match).
+//
+// There are cases when, even when building with XRay instrumentation, users
+// might want to control specifically which functions are instrumented for a
+// particular build using special-case lists provided to the compiler. These
+// special case lists are provided to Clang via the
+// -fxray-always-instrument=... and -fxray-never-instrument=... flags. The
+// attributes in source take precedence over these special-case lists.
+//
+// To disable the XRay attributes at build-time, users may define
+// ABSL_NO_XRAY_ATTRIBUTES. Do NOT define ABSL_NO_XRAY_ATTRIBUTES on specific
+// packages/targets, as this may lead to conflicting definitions of functions at
+// link-time.
+//
+#if ABSL_HAVE_CPP_ATTRIBUTE(clang::xray_always_instrument) && \
+    !defined(ABSL_NO_XRAY_ATTRIBUTES)
+#define ABSL_XRAY_ALWAYS_INSTRUMENT [[clang::xray_always_instrument]]
+#define ABSL_XRAY_NEVER_INSTRUMENT [[clang::xray_never_instrument]]
+#if ABSL_HAVE_CPP_ATTRIBUTE(clang::xray_log_args)
+#define ABSL_XRAY_LOG_ARGS(N) \
+    [[clang::xray_always_instrument, clang::xray_log_args(N)]]
+#else
+#define ABSL_XRAY_LOG_ARGS(N) [[clang::xray_always_instrument]]
+#endif
+#else
+#define ABSL_XRAY_ALWAYS_INSTRUMENT
+#define ABSL_XRAY_NEVER_INSTRUMENT
+#define ABSL_XRAY_LOG_ARGS(N)
+#endif
+
+// ABSL_ATTRIBUTE_REINITIALIZES
+//
+// Indicates that a member function reinitializes the entire object to a known
+// state, independent of the previous state of the object.
+//
+// The clang-tidy check bugprone-use-after-move allows member functions marked
+// with this attribute to be called on objects that have been moved from;
+// without the attribute, this would result in a use-after-move warning.
+#if ABSL_HAVE_CPP_ATTRIBUTE(clang::reinitializes)
+#define ABSL_ATTRIBUTE_REINITIALIZES [[clang::reinitializes]]
+#else
+#define ABSL_ATTRIBUTE_REINITIALIZES
+#endif
+
+// -----------------------------------------------------------------------------
+// Variable Attributes
+// -----------------------------------------------------------------------------
+
+// ABSL_ATTRIBUTE_UNUSED
+//
+// Prevents the compiler from complaining about variables that appear unused.
+#if ABSL_HAVE_ATTRIBUTE(unused) || (defined(__GNUC__) && !defined(__clang__))
+#undef ABSL_ATTRIBUTE_UNUSED
+#define ABSL_ATTRIBUTE_UNUSED __attribute__((__unused__))
+#else
+#define ABSL_ATTRIBUTE_UNUSED
+#endif
+
+// ABSL_ATTRIBUTE_INITIAL_EXEC
+//
+// Tells the compiler to use "initial-exec" mode for a thread-local variable.
+// See http://people.redhat.com/drepper/tls.pdf for the gory details.
+#if ABSL_HAVE_ATTRIBUTE(tls_model) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_INITIAL_EXEC __attribute__((tls_model("initial-exec")))
+#else
+#define ABSL_ATTRIBUTE_INITIAL_EXEC
+#endif
+
+// ABSL_ATTRIBUTE_PACKED
+//
+// Instructs the compiler not to use natural alignment for a tagged data
+// structure, but instead to reduce its alignment to 1. This attribute can
+// either be applied to members of a structure or to a structure in its
+// entirety. Applying this attribute (judiciously) to a structure in its
+// entirety to optimize the memory footprint of very commonly-used structs is
+// fine. Do not apply this attribute to a structure in its entirety if the
+// purpose is to control the offsets of the members in the structure. Instead,
+// apply this attribute only to structure members that need it.
+//
+// When applying ABSL_ATTRIBUTE_PACKED only to specific structure members the
+// natural alignment of structure members not annotated is preserved. Aligned
+// member accesses are faster than non-aligned member accesses even if the
+// targeted microprocessor supports non-aligned accesses.
+#if ABSL_HAVE_ATTRIBUTE(packed) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_PACKED __attribute__((__packed__))
+#else
+#define ABSL_ATTRIBUTE_PACKED
+#endif
+
+// ABSL_ATTRIBUTE_FUNC_ALIGN
+//
+// Tells the compiler to align the function start at least to certain
+// alignment boundary
+#if ABSL_HAVE_ATTRIBUTE(aligned) || (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_ATTRIBUTE_FUNC_ALIGN(bytes) __attribute__((aligned(bytes)))
+#else
+#define ABSL_ATTRIBUTE_FUNC_ALIGN(bytes)
+#endif
+
+// ABSL_CONST_INIT
+//
+// A variable declaration annotated with the `ABSL_CONST_INIT` attribute will
+// not compile (on supported platforms) unless the variable has a constant
+// initializer. This is useful for variables with static and thread storage
+// duration, because it guarantees that they will not suffer from the so-called
+// "static init order fiasco".  Prefer to put this attribute on the most visible
+// declaration of the variable, if there's more than one, because code that
+// accesses the variable can then use the attribute for optimization.
+//
+// Example:
+//
+//   class MyClass {
+//    public:
+//     ABSL_CONST_INIT static MyType my_var;
+//   };
+//
+//   MyType MyClass::my_var = MakeMyType(...);
+//
+// Note that this attribute is redundant if the variable is declared constexpr.
+#if ABSL_HAVE_CPP_ATTRIBUTE(clang::require_constant_initialization)
+#define ABSL_CONST_INIT [[clang::require_constant_initialization]]
+#else
+#define ABSL_CONST_INIT
+#endif  // ABSL_HAVE_CPP_ATTRIBUTE(clang::require_constant_initialization)
+
+#endif  // ABSL_BASE_ATTRIBUTES_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/call_once.h b/ChattingApp 000/Pods/abseil/absl/base/call_once.h
new file mode 100644
index 0000000..bc5ec93
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/call_once.h	
@@ -0,0 +1,226 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: call_once.h
+// -----------------------------------------------------------------------------
+//
+// This header file provides an Abseil version of `std::call_once` for invoking
+// a given function at most once, across all threads. This Abseil version is
+// faster than the C++11 version and incorporates the C++17 argument-passing
+// fix, so that (for example) non-const references may be passed to the invoked
+// function.
+
+#ifndef ABSL_BASE_CALL_ONCE_H_
+#define ABSL_BASE_CALL_ONCE_H_
+
+#include <algorithm>
+#include <atomic>
+#include <cstdint>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/invoke.h"
+#include "absl/base/internal/low_level_scheduling.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/scheduling_mode.h"
+#include "absl/base/internal/spinlock_wait.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class once_flag;
+
+namespace base_internal {
+std::atomic<uint32_t>* ControlWord(absl::once_flag* flag);
+}  // namespace base_internal
+
+// call_once()
+//
+// For all invocations using a given `once_flag`, invokes a given `fn` exactly
+// once across all threads. The first call to `call_once()` with a particular
+// `once_flag` argument (that does not throw an exception) will run the
+// specified function with the provided `args`; other calls with the same
+// `once_flag` argument will not run the function, but will wait
+// for the provided function to finish running (if it is still running).
+//
+// This mechanism provides a safe, simple, and fast mechanism for one-time
+// initialization in a multi-threaded process.
+//
+// Example:
+//
+// class MyInitClass {
+//  public:
+//  ...
+//  mutable absl::once_flag once_;
+//
+//  MyInitClass* init() const {
+//    absl::call_once(once_, &MyInitClass::Init, this);
+//    return ptr_;
+//  }
+//
+template <typename Callable, typename... Args>
+void call_once(absl::once_flag& flag, Callable&& fn, Args&&... args);
+
+// once_flag
+//
+// Objects of this type are used to distinguish calls to `call_once()` and
+// ensure the provided function is only invoked once across all threads. This
+// type is not copyable or movable. However, it has a `constexpr`
+// constructor, and is safe to use as a namespace-scoped global variable.
+class once_flag {
+ public:
+  constexpr once_flag() : control_(0) {}
+  once_flag(const once_flag&) = delete;
+  once_flag& operator=(const once_flag&) = delete;
+
+ private:
+  friend std::atomic<uint32_t>* base_internal::ControlWord(once_flag* flag);
+  std::atomic<uint32_t> control_;
+};
+
+//------------------------------------------------------------------------------
+// End of public interfaces.
+// Implementation details follow.
+//------------------------------------------------------------------------------
+
+namespace base_internal {
+
+// Like call_once, but uses KERNEL_ONLY scheduling. Intended to be used to
+// initialize entities used by the scheduler implementation.
+template <typename Callable, typename... Args>
+void LowLevelCallOnce(absl::once_flag* flag, Callable&& fn, Args&&... args);
+
+// Disables scheduling while on stack when scheduling mode is non-cooperative.
+// No effect for cooperative scheduling modes.
+class SchedulingHelper {
+ public:
+  explicit SchedulingHelper(base_internal::SchedulingMode mode) : mode_(mode) {
+    if (mode_ == base_internal::SCHEDULE_KERNEL_ONLY) {
+      guard_result_ = base_internal::SchedulingGuard::DisableRescheduling();
+    }
+  }
+
+  ~SchedulingHelper() {
+    if (mode_ == base_internal::SCHEDULE_KERNEL_ONLY) {
+      base_internal::SchedulingGuard::EnableRescheduling(guard_result_);
+    }
+  }
+
+ private:
+  base_internal::SchedulingMode mode_;
+  bool guard_result_;
+};
+
+// Bit patterns for call_once state machine values.  Internal implementation
+// detail, not for use by clients.
+//
+// The bit patterns are arbitrarily chosen from unlikely values, to aid in
+// debugging.  However, kOnceInit must be 0, so that a zero-initialized
+// once_flag will be valid for immediate use.
+enum {
+  kOnceInit = 0,
+  kOnceRunning = 0x65C2937B,
+  kOnceWaiter = 0x05A308D2,
+  // A very small constant is chosen for kOnceDone so that it fit in a single
+  // compare with immediate instruction for most common ISAs.  This is verified
+  // for x86, POWER and ARM.
+  kOnceDone = 221,    // Random Number
+};
+
+template <typename Callable, typename... Args>
+ABSL_ATTRIBUTE_NOINLINE
+void CallOnceImpl(std::atomic<uint32_t>* control,
+                  base_internal::SchedulingMode scheduling_mode, Callable&& fn,
+                  Args&&... args) {
+#ifndef NDEBUG
+  {
+    uint32_t old_control = control->load(std::memory_order_relaxed);
+    if (old_control != kOnceInit &&
+        old_control != kOnceRunning &&
+        old_control != kOnceWaiter &&
+        old_control != kOnceDone) {
+      ABSL_RAW_LOG(FATAL, "Unexpected value for control word: 0x%lx",
+                   static_cast<unsigned long>(old_control));  // NOLINT
+    }
+  }
+#endif  // NDEBUG
+  static const base_internal::SpinLockWaitTransition trans[] = {
+      {kOnceInit, kOnceRunning, true},
+      {kOnceRunning, kOnceWaiter, false},
+      {kOnceDone, kOnceDone, true}};
+
+  // Must do this before potentially modifying control word's state.
+  base_internal::SchedulingHelper maybe_disable_scheduling(scheduling_mode);
+  // Short circuit the simplest case to avoid procedure call overhead.
+  // The base_internal::SpinLockWait() call returns either kOnceInit or
+  // kOnceDone. If it returns kOnceDone, it must have loaded the control word
+  // with std::memory_order_acquire and seen a value of kOnceDone.
+  uint32_t old_control = kOnceInit;
+  if (control->compare_exchange_strong(old_control, kOnceRunning,
+                                       std::memory_order_relaxed) ||
+      base_internal::SpinLockWait(control, ABSL_ARRAYSIZE(trans), trans,
+                                  scheduling_mode) == kOnceInit) {
+    base_internal::Invoke(std::forward<Callable>(fn),
+                          std::forward<Args>(args)...);
+    // The call to SpinLockWake below is an optimization, because the waiter
+    // in SpinLockWait is waiting with a short timeout. The atomic load/store
+    // sequence is slightly faster than an atomic exchange:
+    //   old_control = control->exchange(base_internal::kOnceDone,
+    //                                   std::memory_order_release);
+    // We opt for a slightly faster case when there are no waiters, in spite
+    // of longer tail latency when there are waiters.
+    old_control = control->load(std::memory_order_relaxed);
+    control->store(base_internal::kOnceDone, std::memory_order_release);
+    if (old_control == base_internal::kOnceWaiter) {
+      base_internal::SpinLockWake(control, true);
+    }
+  }  // else *control is already kOnceDone
+}
+
+inline std::atomic<uint32_t>* ControlWord(once_flag* flag) {
+  return &flag->control_;
+}
+
+template <typename Callable, typename... Args>
+void LowLevelCallOnce(absl::once_flag* flag, Callable&& fn, Args&&... args) {
+  std::atomic<uint32_t>* once = base_internal::ControlWord(flag);
+  uint32_t s = once->load(std::memory_order_acquire);
+  if (ABSL_PREDICT_FALSE(s != base_internal::kOnceDone)) {
+    base_internal::CallOnceImpl(once, base_internal::SCHEDULE_KERNEL_ONLY,
+                                std::forward<Callable>(fn),
+                                std::forward<Args>(args)...);
+  }
+}
+
+}  // namespace base_internal
+
+template <typename Callable, typename... Args>
+void call_once(absl::once_flag& flag, Callable&& fn, Args&&... args) {
+  std::atomic<uint32_t>* once = base_internal::ControlWord(&flag);
+  uint32_t s = once->load(std::memory_order_acquire);
+  if (ABSL_PREDICT_FALSE(s != base_internal::kOnceDone)) {
+    base_internal::CallOnceImpl(
+        once, base_internal::SCHEDULE_COOPERATIVE_AND_KERNEL,
+        std::forward<Callable>(fn), std::forward<Args>(args)...);
+  }
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_CALL_ONCE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/casts.h b/ChattingApp 000/Pods/abseil/absl/base/casts.h
new file mode 100644
index 0000000..322cc1d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/casts.h	
@@ -0,0 +1,184 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: casts.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines casting templates to fit use cases not covered by
+// the standard casts provided in the C++ standard. As with all cast operations,
+// use these with caution and only if alternatives do not exist.
+
+#ifndef ABSL_BASE_CASTS_H_
+#define ABSL_BASE_CASTS_H_
+
+#include <cstring>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/identity.h"
+#include "absl/base/macros.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace internal_casts {
+
+template <class Dest, class Source>
+struct is_bitcastable
+    : std::integral_constant<
+          bool,
+          sizeof(Dest) == sizeof(Source) &&
+              type_traits_internal::is_trivially_copyable<Source>::value &&
+              type_traits_internal::is_trivially_copyable<Dest>::value &&
+              std::is_default_constructible<Dest>::value> {};
+
+}  // namespace internal_casts
+
+// implicit_cast()
+//
+// Performs an implicit conversion between types following the language
+// rules for implicit conversion; if an implicit conversion is otherwise
+// allowed by the language in the given context, this function performs such an
+// implicit conversion.
+//
+// Example:
+//
+//   // If the context allows implicit conversion:
+//   From from;
+//   To to = from;
+//
+//   // Such code can be replaced by:
+//   implicit_cast<To>(from);
+//
+// An `implicit_cast()` may also be used to annotate numeric type conversions
+// that, although safe, may produce compiler warnings (such as `long` to `int`).
+// Additionally, an `implicit_cast()` is also useful within return statements to
+// indicate a specific implicit conversion is being undertaken.
+//
+// Example:
+//
+//   return implicit_cast<double>(size_in_bytes) / capacity_;
+//
+// Annotating code with `implicit_cast()` allows you to explicitly select
+// particular overloads and template instantiations, while providing a safer
+// cast than `reinterpret_cast()` or `static_cast()`.
+//
+// Additionally, an `implicit_cast()` can be used to allow upcasting within a
+// type hierarchy where incorrect use of `static_cast()` could accidentally
+// allow downcasting.
+//
+// Finally, an `implicit_cast()` can be used to perform implicit conversions
+// from unrelated types that otherwise couldn't be implicitly cast directly;
+// C++ will normally only implicitly cast "one step" in such conversions.
+//
+// That is, if C is a type which can be implicitly converted to B, with B being
+// a type that can be implicitly converted to A, an `implicit_cast()` can be
+// used to convert C to B (which the compiler can then implicitly convert to A
+// using language rules).
+//
+// Example:
+//
+//   // Assume an object C is convertible to B, which is implicitly convertible
+//   // to A
+//   A a = implicit_cast<B>(C);
+//
+// Such implicit cast chaining may be useful within template logic.
+template <typename To>
+constexpr To implicit_cast(typename absl::internal::identity_t<To> to) {
+  return to;
+}
+
+// bit_cast()
+//
+// Performs a bitwise cast on a type without changing the underlying bit
+// representation of that type's value. The two types must be of the same size
+// and both types must be trivially copyable. As with most casts, use with
+// caution. A `bit_cast()` might be needed when you need to temporarily treat a
+// type as some other type, such as in the following cases:
+//
+//    * Serialization (casting temporarily to `char *` for those purposes is
+//      always allowed by the C++ standard)
+//    * Managing the individual bits of a type within mathematical operations
+//      that are not normally accessible through that type
+//    * Casting non-pointer types to pointer types (casting the other way is
+//      allowed by `reinterpret_cast()` but round-trips cannot occur the other
+//      way).
+//
+// Example:
+//
+//   float f = 3.14159265358979;
+//   int i = bit_cast<int32_t>(f);
+//   // i = 0x40490fdb
+//
+// Casting non-pointer types to pointer types and then dereferencing them
+// traditionally produces undefined behavior.
+//
+// Example:
+//
+//   // WRONG
+//   float f = 3.14159265358979;            // WRONG
+//   int i = * reinterpret_cast<int*>(&f);  // WRONG
+//
+// The address-casting method produces undefined behavior according to the ISO
+// C++ specification section [basic.lval]. Roughly, this section says: if an
+// object in memory has one type, and a program accesses it with a different
+// type, the result is undefined behavior for most values of "different type".
+//
+// Such casting results in type punning: holding an object in memory of one type
+// and reading its bits back using a different type. A `bit_cast()` avoids this
+// issue by implementing its casts using `memcpy()`, which avoids introducing
+// this undefined behavior.
+//
+// NOTE: The requirements here are more strict than the bit_cast of standard
+// proposal p0476 due to the need for workarounds and lack of intrinsics.
+// Specifically, this implementation also requires `Dest` to be
+// default-constructible.
+template <
+    typename Dest, typename Source,
+    typename std::enable_if<internal_casts::is_bitcastable<Dest, Source>::value,
+                            int>::type = 0>
+inline Dest bit_cast(const Source& source) {
+  Dest dest;
+  memcpy(static_cast<void*>(std::addressof(dest)),
+         static_cast<const void*>(std::addressof(source)), sizeof(dest));
+  return dest;
+}
+
+// NOTE: This overload is only picked if the requirements of bit_cast are not
+// met. It is therefore UB, but is provided temporarily as previous versions of
+// this function template were unchecked. Do not use this in new code.
+template <
+    typename Dest, typename Source,
+    typename std::enable_if<
+        !internal_casts::is_bitcastable<Dest, Source>::value, int>::type = 0>
+ABSL_DEPRECATED(
+    "absl::bit_cast type requirements were violated. Update the types being "
+    "used such that they are the same size and are both TriviallyCopyable.")
+inline Dest bit_cast(const Source& source) {
+  static_assert(sizeof(Dest) == sizeof(Source),
+                "Source and destination types should have equal sizes.");
+
+  Dest dest;
+  memcpy(&dest, &source, sizeof(dest));
+  return dest;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_CASTS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/config.h b/ChattingApp 000/Pods/abseil/absl/base/config.h
new file mode 100644
index 0000000..ee99f94
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/config.h	
@@ -0,0 +1,671 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: config.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a set of macros for checking the presence of
+// important compiler and platform features. Such macros can be used to
+// produce portable code by parameterizing compilation based on the presence or
+// lack of a given feature.
+//
+// We define a "feature" as some interface we wish to program to: for example,
+// a library function or system call. A value of `1` indicates support for
+// that feature; any other value indicates the feature support is undefined.
+//
+// Example:
+//
+// Suppose a programmer wants to write a program that uses the 'mmap()' system
+// call. The Abseil macro for that feature (`ABSL_HAVE_MMAP`) allows you to
+// selectively include the `mmap.h` header and bracket code using that feature
+// in the macro:
+//
+//   #include "absl/base/config.h"
+//
+//   #ifdef ABSL_HAVE_MMAP
+//   #include "sys/mman.h"
+//   #endif  //ABSL_HAVE_MMAP
+//
+//   ...
+//   #ifdef ABSL_HAVE_MMAP
+//   void *ptr = mmap(...);
+//   ...
+//   #endif  // ABSL_HAVE_MMAP
+
+#ifndef ABSL_BASE_CONFIG_H_
+#define ABSL_BASE_CONFIG_H_
+
+// Included for the __GLIBC__ macro (or similar macros on other systems).
+#include <limits.h>
+
+#ifdef __cplusplus
+// Included for __GLIBCXX__, _LIBCPP_VERSION
+#include <cstddef>
+#endif  // __cplusplus
+
+#if defined(__APPLE__)
+// Included for TARGET_OS_IPHONE, __IPHONE_OS_VERSION_MIN_REQUIRED,
+// __IPHONE_8_0.
+#include <Availability.h>
+#include <TargetConditionals.h>
+#endif
+
+#include "absl/base/options.h"
+#include "absl/base/policy_checks.h"
+
+// Helper macro to convert a CPP variable to a string literal.
+#define ABSL_INTERNAL_DO_TOKEN_STR(x) #x
+#define ABSL_INTERNAL_TOKEN_STR(x) ABSL_INTERNAL_DO_TOKEN_STR(x)
+
+// -----------------------------------------------------------------------------
+// Abseil namespace annotations
+// -----------------------------------------------------------------------------
+
+// ABSL_NAMESPACE_BEGIN/ABSL_NAMESPACE_END
+//
+// An annotation placed at the beginning/end of each `namespace absl` scope.
+// This is used to inject an inline namespace.
+//
+// The proper way to write Abseil code in the `absl` namespace is:
+//
+// namespace absl {
+// ABSL_NAMESPACE_BEGIN
+//
+// void Foo();  // absl::Foo().
+//
+// ABSL_NAMESPACE_END
+// }  // namespace absl
+//
+// Users of Abseil should not use these macros, because users of Abseil should
+// not write `namespace absl {` in their own code for any reason.  (Abseil does
+// not support forward declarations of its own types, nor does it support
+// user-provided specialization of Abseil templates.  Code that violates these
+// rules may be broken without warning.)
+#if !defined(ABSL_OPTION_USE_INLINE_NAMESPACE) || \
+    !defined(ABSL_OPTION_INLINE_NAMESPACE_NAME)
+#error options.h is misconfigured.
+#endif
+
+// Check that ABSL_OPTION_INLINE_NAMESPACE_NAME is neither "head" nor ""
+#if defined(__cplusplus) && ABSL_OPTION_USE_INLINE_NAMESPACE == 1
+
+#define ABSL_INTERNAL_INLINE_NAMESPACE_STR \
+  ABSL_INTERNAL_TOKEN_STR(ABSL_OPTION_INLINE_NAMESPACE_NAME)
+
+static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
+              "options.h misconfigured: ABSL_OPTION_INLINE_NAMESPACE_NAME must "
+              "not be empty.");
+static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
+                  ABSL_INTERNAL_INLINE_NAMESPACE_STR[1] != 'e' ||
+                  ABSL_INTERNAL_INLINE_NAMESPACE_STR[2] != 'a' ||
+                  ABSL_INTERNAL_INLINE_NAMESPACE_STR[3] != 'd' ||
+                  ABSL_INTERNAL_INLINE_NAMESPACE_STR[4] != '\0',
+              "options.h misconfigured: ABSL_OPTION_INLINE_NAMESPACE_NAME must "
+              "be changed to a new, unique identifier name.");
+
+#endif
+
+#if ABSL_OPTION_USE_INLINE_NAMESPACE == 0
+#define ABSL_NAMESPACE_BEGIN
+#define ABSL_NAMESPACE_END
+#elif ABSL_OPTION_USE_INLINE_NAMESPACE == 1
+#define ABSL_NAMESPACE_BEGIN \
+  inline namespace ABSL_OPTION_INLINE_NAMESPACE_NAME {
+#define ABSL_NAMESPACE_END }
+#else
+#error options.h is misconfigured.
+#endif
+
+// -----------------------------------------------------------------------------
+// Compiler Feature Checks
+// -----------------------------------------------------------------------------
+
+// ABSL_HAVE_BUILTIN()
+//
+// Checks whether the compiler supports a Clang Feature Checking Macro, and if
+// so, checks whether it supports the provided builtin function "x" where x
+// is one of the functions noted in
+// https://clang.llvm.org/docs/LanguageExtensions.html
+//
+// Note: Use this macro to avoid an extra level of #ifdef __has_builtin check.
+// http://releases.llvm.org/3.3/tools/clang/docs/LanguageExtensions.html
+#ifdef __has_builtin
+#define ABSL_HAVE_BUILTIN(x) __has_builtin(x)
+#else
+#define ABSL_HAVE_BUILTIN(x) 0
+#endif
+
+#if defined(__is_identifier)
+#define ABSL_INTERNAL_HAS_KEYWORD(x) !(__is_identifier(x))
+#else
+#define ABSL_INTERNAL_HAS_KEYWORD(x) 0
+#endif
+
+// ABSL_HAVE_TLS is defined to 1 when __thread should be supported.
+// We assume __thread is supported on Linux when compiled with Clang or compiled
+// against libstdc++ with _GLIBCXX_HAVE_TLS defined.
+#ifdef ABSL_HAVE_TLS
+#error ABSL_HAVE_TLS cannot be directly set
+#elif defined(__linux__) && (defined(__clang__) || defined(_GLIBCXX_HAVE_TLS))
+#define ABSL_HAVE_TLS 1
+#endif
+
+// ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE
+//
+// Checks whether `std::is_trivially_destructible<T>` is supported.
+//
+// Notes: All supported compilers using libc++ support this feature, as does
+// gcc >= 4.8.1 using libstdc++, and Visual Studio.
+#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE
+#error ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE cannot be directly set
+#elif defined(_LIBCPP_VERSION) ||                                        \
+    (!defined(__clang__) && defined(__GNUC__) && defined(__GLIBCXX__) && \
+     (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) ||        \
+    defined(_MSC_VER)
+#define ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE 1
+#endif
+
+// ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE
+//
+// Checks whether `std::is_trivially_default_constructible<T>` and
+// `std::is_trivially_copy_constructible<T>` are supported.
+
+// ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE
+//
+// Checks whether `std::is_trivially_copy_assignable<T>` is supported.
+
+// Notes: Clang with libc++ supports these features, as does gcc >= 5.1 with
+// either libc++ or libstdc++, and Visual Studio (but not NVCC).
+#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE)
+#error ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE cannot be directly set
+#elif defined(ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE)
+#error ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE cannot directly set
+#elif (defined(__clang__) && defined(_LIBCPP_VERSION)) ||        \
+    (!defined(__clang__) && defined(__GNUC__) &&                 \
+     (__GNUC__ > 7 || (__GNUC__ == 7 && __GNUC_MINOR__ >= 4)) && \
+     (defined(_LIBCPP_VERSION) || defined(__GLIBCXX__))) ||      \
+    (defined(_MSC_VER) && !defined(__NVCC__))
+#define ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE 1
+#define ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE 1
+#endif
+
+// ABSL_HAVE_SOURCE_LOCATION_CURRENT
+//
+// Indicates whether `absl::SourceLocation::current()` will return useful
+// information in some contexts.
+#ifndef ABSL_HAVE_SOURCE_LOCATION_CURRENT
+#if ABSL_INTERNAL_HAS_KEYWORD(__builtin_LINE) && \
+    ABSL_INTERNAL_HAS_KEYWORD(__builtin_FILE)
+#define ABSL_HAVE_SOURCE_LOCATION_CURRENT 1
+#endif
+#endif
+
+// ABSL_HAVE_THREAD_LOCAL
+//
+// Checks whether C++11's `thread_local` storage duration specifier is
+// supported.
+#ifdef ABSL_HAVE_THREAD_LOCAL
+#error ABSL_HAVE_THREAD_LOCAL cannot be directly set
+#elif defined(__APPLE__)
+// Notes:
+// * Xcode's clang did not support `thread_local` until version 8, and
+//   even then not for all iOS < 9.0.
+// * Xcode 9.3 started disallowing `thread_local` for 32-bit iOS simulator
+//   targeting iOS 9.x.
+// * Xcode 10 moves the deployment target check for iOS < 9.0 to link time
+//   making __has_feature unreliable there.
+//
+// Otherwise, `__has_feature` is only supported by Clang so it has be inside
+// `defined(__APPLE__)` check.
+#if __has_feature(cxx_thread_local) && \
+    !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)
+#define ABSL_HAVE_THREAD_LOCAL 1
+#endif
+#else  // !defined(__APPLE__)
+#define ABSL_HAVE_THREAD_LOCAL 1
+#endif
+
+// There are platforms for which TLS should not be used even though the compiler
+// makes it seem like it's supported (Android NDK < r12b for example).
+// This is primarily because of linker problems and toolchain misconfiguration:
+// Abseil does not intend to support this indefinitely. Currently, the newest
+// toolchain that we intend to support that requires this behavior is the
+// r11 NDK - allowing for a 5 year support window on that means this option
+// is likely to be removed around June of 2021.
+// TLS isn't supported until NDK r12b per
+// https://developer.android.com/ndk/downloads/revision_history.html
+// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in
+// <android/ndk-version.h>. For NDK < r16, users should define these macros,
+// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11.
+#if defined(__ANDROID__) && defined(__clang__)
+#if __has_include(<android/ndk-version.h>)
+#include <android/ndk-version.h>
+#endif  // __has_include(<android/ndk-version.h>)
+#if defined(__ANDROID__) && defined(__clang__) && defined(__NDK_MAJOR__) && \
+    defined(__NDK_MINOR__) &&                                               \
+    ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))
+#undef ABSL_HAVE_TLS
+#undef ABSL_HAVE_THREAD_LOCAL
+#endif
+#endif  // defined(__ANDROID__) && defined(__clang__)
+
+// Emscripten doesn't yet support `thread_local` or `__thread`.
+// https://github.com/emscripten-core/emscripten/issues/3502
+#if defined(__EMSCRIPTEN__)
+#undef ABSL_HAVE_TLS
+#undef ABSL_HAVE_THREAD_LOCAL
+#endif  // defined(__EMSCRIPTEN__)
+
+// ABSL_HAVE_INTRINSIC_INT128
+//
+// Checks whether the __int128 compiler extension for a 128-bit integral type is
+// supported.
+//
+// Note: __SIZEOF_INT128__ is defined by Clang and GCC when __int128 is
+// supported, but we avoid using it in certain cases:
+// * On Clang:
+//   * Building using Clang for Windows, where the Clang runtime library has
+//     128-bit support only on LP64 architectures, but Windows is LLP64.
+// * On Nvidia's nvcc:
+//   * nvcc also defines __GNUC__ and __SIZEOF_INT128__, but not all versions
+//     actually support __int128.
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+#error ABSL_HAVE_INTRINSIC_INT128 cannot be directly set
+#elif defined(__SIZEOF_INT128__)
+#if (defined(__clang__) && !defined(_WIN32)) || \
+    (defined(__CUDACC__) && __CUDACC_VER_MAJOR__ >= 9) ||                \
+    (defined(__GNUC__) && !defined(__clang__) && !defined(__CUDACC__))
+#define ABSL_HAVE_INTRINSIC_INT128 1
+#elif defined(__CUDACC__)
+// __CUDACC_VER__ is a full version number before CUDA 9, and is defined to a
+// string explaining that it has been removed starting with CUDA 9. We use
+// nested #ifs because there is no short-circuiting in the preprocessor.
+// NOTE: `__CUDACC__` could be undefined while `__CUDACC_VER__` is defined.
+#if __CUDACC_VER__ >= 70000
+#define ABSL_HAVE_INTRINSIC_INT128 1
+#endif  // __CUDACC_VER__ >= 70000
+#endif  // defined(__CUDACC__)
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+// ABSL_HAVE_EXCEPTIONS
+//
+// Checks whether the compiler both supports and enables exceptions. Many
+// compilers support a "no exceptions" mode that disables exceptions.
+//
+// Generally, when ABSL_HAVE_EXCEPTIONS is not defined:
+//
+// * Code using `throw` and `try` may not compile.
+// * The `noexcept` specifier will still compile and behave as normal.
+// * The `noexcept` operator may still return `false`.
+//
+// For further details, consult the compiler's documentation.
+#ifdef ABSL_HAVE_EXCEPTIONS
+#error ABSL_HAVE_EXCEPTIONS cannot be directly set.
+
+#elif defined(__clang__)
+
+#if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6)
+// Clang >= 3.6
+#if __has_feature(cxx_exceptions)
+#define ABSL_HAVE_EXCEPTIONS 1
+#endif  // __has_feature(cxx_exceptions)
+#else
+// Clang < 3.6
+// http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html#the-exceptions-macro
+#if defined(__EXCEPTIONS) && __has_feature(cxx_exceptions)
+#define ABSL_HAVE_EXCEPTIONS 1
+#endif  // defined(__EXCEPTIONS) && __has_feature(cxx_exceptions)
+#endif  // __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6)
+
+// Handle remaining special cases and default to exceptions being supported.
+#elif !(defined(__GNUC__) && (__GNUC__ < 5) && !defined(__EXCEPTIONS)) &&    \
+    !(defined(__GNUC__) && (__GNUC__ >= 5) && !defined(__cpp_exceptions)) && \
+    !(defined(_MSC_VER) && !defined(_CPPUNWIND))
+#define ABSL_HAVE_EXCEPTIONS 1
+#endif
+
+// -----------------------------------------------------------------------------
+// Platform Feature Checks
+// -----------------------------------------------------------------------------
+
+// Currently supported operating systems and associated preprocessor
+// symbols:
+//
+//   Linux and Linux-derived           __linux__
+//   Android                           __ANDROID__ (implies __linux__)
+//   Linux (non-Android)               __linux__ && !__ANDROID__
+//   Darwin (macOS and iOS)            __APPLE__
+//   Akaros (http://akaros.org)        __ros__
+//   Windows                           _WIN32
+//   NaCL                              __native_client__
+//   AsmJS                             __asmjs__
+//   WebAssembly                       __wasm__
+//   Fuchsia                           __Fuchsia__
+//
+// Note that since Android defines both __ANDROID__ and __linux__, one
+// may probe for either Linux or Android by simply testing for __linux__.
+
+// ABSL_HAVE_MMAP
+//
+// Checks whether the platform has an mmap(2) implementation as defined in
+// POSIX.1-2001.
+#ifdef ABSL_HAVE_MMAP
+#error ABSL_HAVE_MMAP cannot be directly set
+#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) ||   \
+    defined(__ros__) || defined(__native_client__) || defined(__asmjs__) || \
+    defined(__wasm__) || defined(__Fuchsia__) || defined(__sun) || \
+    defined(__ASYLO__)
+#define ABSL_HAVE_MMAP 1
+#endif
+
+// ABSL_HAVE_PTHREAD_GETSCHEDPARAM
+//
+// Checks whether the platform implements the pthread_(get|set)schedparam(3)
+// functions as defined in POSIX.1-2001.
+#ifdef ABSL_HAVE_PTHREAD_GETSCHEDPARAM
+#error ABSL_HAVE_PTHREAD_GETSCHEDPARAM cannot be directly set
+#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \
+    defined(__ros__)
+#define ABSL_HAVE_PTHREAD_GETSCHEDPARAM 1
+#endif
+
+// ABSL_HAVE_SCHED_YIELD
+//
+// Checks whether the platform implements sched_yield(2) as defined in
+// POSIX.1-2001.
+#ifdef ABSL_HAVE_SCHED_YIELD
+#error ABSL_HAVE_SCHED_YIELD cannot be directly set
+#elif defined(__linux__) || defined(__ros__) || defined(__native_client__)
+#define ABSL_HAVE_SCHED_YIELD 1
+#endif
+
+// ABSL_HAVE_SEMAPHORE_H
+//
+// Checks whether the platform supports the <semaphore.h> header and sem_init(3)
+// family of functions as standardized in POSIX.1-2001.
+//
+// Note: While Apple provides <semaphore.h> for both iOS and macOS, it is
+// explicitly deprecated and will cause build failures if enabled for those
+// platforms.  We side-step the issue by not defining it here for Apple
+// platforms.
+#ifdef ABSL_HAVE_SEMAPHORE_H
+#error ABSL_HAVE_SEMAPHORE_H cannot be directly set
+#elif defined(__linux__) || defined(__ros__)
+#define ABSL_HAVE_SEMAPHORE_H 1
+#endif
+
+// ABSL_HAVE_ALARM
+//
+// Checks whether the platform supports the <signal.h> header and alarm(2)
+// function as standardized in POSIX.1-2001.
+#ifdef ABSL_HAVE_ALARM
+#error ABSL_HAVE_ALARM cannot be directly set
+#elif defined(__GOOGLE_GRTE_VERSION__)
+// feature tests for Google's GRTE
+#define ABSL_HAVE_ALARM 1
+#elif defined(__GLIBC__)
+// feature test for glibc
+#define ABSL_HAVE_ALARM 1
+#elif defined(_MSC_VER)
+// feature tests for Microsoft's library
+#elif defined(__MINGW32__)
+// mingw32 doesn't provide alarm(2):
+// https://osdn.net/projects/mingw/scm/git/mingw-org-wsl/blobs/5.2-trunk/mingwrt/include/unistd.h
+// mingw-w64 provides a no-op implementation:
+// https://sourceforge.net/p/mingw-w64/mingw-w64/ci/master/tree/mingw-w64-crt/misc/alarm.c
+#elif defined(__EMSCRIPTEN__)
+// emscripten doesn't support signals
+#elif defined(__Fuchsia__)
+// Signals don't exist on fuchsia.
+#elif defined(__native_client__)
+#else
+// other standard libraries
+#define ABSL_HAVE_ALARM 1
+#endif
+
+// ABSL_IS_LITTLE_ENDIAN
+// ABSL_IS_BIG_ENDIAN
+//
+// Checks the endianness of the platform.
+//
+// Notes: uses the built in endian macros provided by GCC (since 4.6) and
+// Clang (since 3.2); see
+// https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html.
+// Otherwise, if _WIN32, assume little endian. Otherwise, bail with an error.
+#if defined(ABSL_IS_BIG_ENDIAN)
+#error "ABSL_IS_BIG_ENDIAN cannot be directly set."
+#endif
+#if defined(ABSL_IS_LITTLE_ENDIAN)
+#error "ABSL_IS_LITTLE_ENDIAN cannot be directly set."
+#endif
+
+#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
+     __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+#define ABSL_IS_LITTLE_ENDIAN 1
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
+    __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define ABSL_IS_BIG_ENDIAN 1
+#elif defined(_WIN32)
+#define ABSL_IS_LITTLE_ENDIAN 1
+#else
+#error "absl endian detection needs to be set up for your compiler"
+#endif
+
+// macOS 10.13 and iOS 10.11 don't let you use <any>, <optional>, or <variant>
+// even though the headers exist and are publicly noted to work.  See
+// https://github.com/abseil/abseil-cpp/issues/207 and
+// https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes
+// libc++ spells out the availability requirements in the file
+// llvm-project/libcxx/include/__config via the #define
+// _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS.
+#if defined(__APPLE__) && defined(_LIBCPP_VERSION) && \
+  ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101400) || \
+  (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \
+  (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 120000) || \
+  (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 50000))
+#define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 1
+#else
+#define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 0
+#endif
+
+// ABSL_HAVE_STD_ANY
+//
+// Checks whether C++17 std::any is available by checking whether <any> exists.
+#ifdef ABSL_HAVE_STD_ANY
+#error "ABSL_HAVE_STD_ANY cannot be directly set."
+#endif
+
+#ifdef __has_include
+#if __has_include(<any>) && __cplusplus >= 201703L && \
+    !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE
+#define ABSL_HAVE_STD_ANY 1
+#endif
+#endif
+
+// ABSL_HAVE_STD_OPTIONAL
+//
+// Checks whether C++17 std::optional is available.
+#ifdef ABSL_HAVE_STD_OPTIONAL
+#error "ABSL_HAVE_STD_OPTIONAL cannot be directly set."
+#endif
+
+#ifdef __has_include
+#if __has_include(<optional>) && __cplusplus >= 201703L && \
+    !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE
+#define ABSL_HAVE_STD_OPTIONAL 1
+#endif
+#endif
+
+// ABSL_HAVE_STD_VARIANT
+//
+// Checks whether C++17 std::variant is available.
+#ifdef ABSL_HAVE_STD_VARIANT
+#error "ABSL_HAVE_STD_VARIANT cannot be directly set."
+#endif
+
+#ifdef __has_include
+#if __has_include(<variant>) && __cplusplus >= 201703L && \
+    !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE
+#define ABSL_HAVE_STD_VARIANT 1
+#endif
+#endif
+
+// ABSL_HAVE_STD_STRING_VIEW
+//
+// Checks whether C++17 std::string_view is available.
+#ifdef ABSL_HAVE_STD_STRING_VIEW
+#error "ABSL_HAVE_STD_STRING_VIEW cannot be directly set."
+#endif
+
+#ifdef __has_include
+#if __has_include(<string_view>) && __cplusplus >= 201703L
+#define ABSL_HAVE_STD_STRING_VIEW 1
+#endif
+#endif
+
+// For MSVC, `__has_include` is supported in VS 2017 15.3, which is later than
+// the support for <optional>, <any>, <string_view>, <variant>. So we use
+// _MSC_VER to check whether we have VS 2017 RTM (when <optional>, <any>,
+// <string_view>, <variant> is implemented) or higher. Also, `__cplusplus` is
+// not correctly set by MSVC, so we use `_MSVC_LANG` to check the language
+// version.
+// TODO(zhangxy): fix tests before enabling aliasing for `std::any`.
+#if defined(_MSC_VER) && _MSC_VER >= 1910 && \
+    ((defined(_MSVC_LANG) && _MSVC_LANG > 201402) || __cplusplus > 201402)
+// #define ABSL_HAVE_STD_ANY 1
+#define ABSL_HAVE_STD_OPTIONAL 1
+#define ABSL_HAVE_STD_VARIANT 1
+#define ABSL_HAVE_STD_STRING_VIEW 1
+#endif
+
+// ABSL_USES_STD_ANY
+//
+// Indicates whether absl::any is an alias for std::any.
+#if !defined(ABSL_OPTION_USE_STD_ANY)
+#error options.h is misconfigured.
+#elif ABSL_OPTION_USE_STD_ANY == 0 || \
+    (ABSL_OPTION_USE_STD_ANY == 2 && !defined(ABSL_HAVE_STD_ANY))
+#undef ABSL_USES_STD_ANY
+#elif ABSL_OPTION_USE_STD_ANY == 1 || \
+    (ABSL_OPTION_USE_STD_ANY == 2 && defined(ABSL_HAVE_STD_ANY))
+#define ABSL_USES_STD_ANY 1
+#else
+#error options.h is misconfigured.
+#endif
+
+// ABSL_USES_STD_OPTIONAL
+//
+// Indicates whether absl::optional is an alias for std::optional.
+#if !defined(ABSL_OPTION_USE_STD_OPTIONAL)
+#error options.h is misconfigured.
+#elif ABSL_OPTION_USE_STD_OPTIONAL == 0 || \
+    (ABSL_OPTION_USE_STD_OPTIONAL == 2 && !defined(ABSL_HAVE_STD_OPTIONAL))
+#undef ABSL_USES_STD_OPTIONAL
+#elif ABSL_OPTION_USE_STD_OPTIONAL == 1 || \
+    (ABSL_OPTION_USE_STD_OPTIONAL == 2 && defined(ABSL_HAVE_STD_OPTIONAL))
+#define ABSL_USES_STD_OPTIONAL 1
+#else
+#error options.h is misconfigured.
+#endif
+
+// ABSL_USES_STD_VARIANT
+//
+// Indicates whether absl::variant is an alias for std::variant.
+#if !defined(ABSL_OPTION_USE_STD_VARIANT)
+#error options.h is misconfigured.
+#elif ABSL_OPTION_USE_STD_VARIANT == 0 || \
+    (ABSL_OPTION_USE_STD_VARIANT == 2 && !defined(ABSL_HAVE_STD_VARIANT))
+#undef ABSL_USES_STD_VARIANT
+#elif ABSL_OPTION_USE_STD_VARIANT == 1 || \
+    (ABSL_OPTION_USE_STD_VARIANT == 2 && defined(ABSL_HAVE_STD_VARIANT))
+#define ABSL_USES_STD_VARIANT 1
+#else
+#error options.h is misconfigured.
+#endif
+
+// ABSL_USES_STD_STRING_VIEW
+//
+// Indicates whether absl::string_view is an alias for std::string_view.
+#if !defined(ABSL_OPTION_USE_STD_STRING_VIEW)
+#error options.h is misconfigured.
+#elif ABSL_OPTION_USE_STD_STRING_VIEW == 0 || \
+    (ABSL_OPTION_USE_STD_STRING_VIEW == 2 &&  \
+     !defined(ABSL_HAVE_STD_STRING_VIEW))
+#undef ABSL_USES_STD_STRING_VIEW
+#elif ABSL_OPTION_USE_STD_STRING_VIEW == 1 || \
+    (ABSL_OPTION_USE_STD_STRING_VIEW == 2 &&  \
+     defined(ABSL_HAVE_STD_STRING_VIEW))
+#define ABSL_USES_STD_STRING_VIEW 1
+#else
+#error options.h is misconfigured.
+#endif
+
+// In debug mode, MSVC 2017's std::variant throws a EXCEPTION_ACCESS_VIOLATION
+// SEH exception from emplace for variant<SomeStruct> when constructing the
+// struct can throw. This defeats some of variant_test and
+// variant_exception_safety_test.
+#if defined(_MSC_VER) && _MSC_VER >= 1700 && defined(_DEBUG)
+#define ABSL_INTERNAL_MSVC_2017_DBG_MODE
+#endif
+
+// ABSL_INTERNAL_MANGLED_NS
+// ABSL_INTERNAL_MANGLED_BACKREFERENCE
+//
+// Internal macros for building up mangled names in our internal fork of CCTZ.
+// This implementation detail is only needed and provided for the MSVC build.
+//
+// These macros both expand to string literals.  ABSL_INTERNAL_MANGLED_NS is
+// the mangled spelling of the `absl` namespace, and
+// ABSL_INTERNAL_MANGLED_BACKREFERENCE is a back-reference integer representing
+// the proper count to skip past the CCTZ fork namespace names.  (This number
+// is one larger when there is an inline namespace name to skip.)
+#if defined(_MSC_VER)
+#if ABSL_OPTION_USE_INLINE_NAMESPACE == 0
+#define ABSL_INTERNAL_MANGLED_NS "absl"
+#define ABSL_INTERNAL_MANGLED_BACKREFERENCE "5"
+#else
+#define ABSL_INTERNAL_MANGLED_NS \
+  ABSL_INTERNAL_TOKEN_STR(ABSL_OPTION_INLINE_NAMESPACE_NAME) "@absl"
+#define ABSL_INTERNAL_MANGLED_BACKREFERENCE "6"
+#endif
+#endif
+
+#undef ABSL_INTERNAL_HAS_KEYWORD
+
+// ABSL_DLL
+//
+// When building Abseil as a DLL, this macro expands to `__declspec(dllexport)`
+// so we can annotate symbols appropriately as being exported. When used in
+// headers consuming a DLL, this macro expands to `__declspec(dllimport)` so
+// that consumers know the symbol is defined inside the DLL. In all other cases,
+// the macro expands to nothing.
+#if defined(_MSC_VER)
+#if defined(ABSL_BUILD_DLL)
+#define ABSL_DLL __declspec(dllexport)
+#elif defined(ABSL_CONSUME_DLL)
+#define ABSL_DLL __declspec(dllimport)
+#else
+#define ABSL_DLL
+#endif
+#else
+#define ABSL_DLL
+#endif  // defined(_MSC_VER)
+
+#endif  // ABSL_BASE_CONFIG_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/const_init.h b/ChattingApp 000/Pods/abseil/absl/base/const_init.h
new file mode 100644
index 0000000..16520b6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/const_init.h	
@@ -0,0 +1,76 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// kConstInit
+// -----------------------------------------------------------------------------
+//
+// A constructor tag used to mark an object as safe for use as a global
+// variable, avoiding the usual lifetime issues that can affect globals.
+
+#ifndef ABSL_BASE_CONST_INIT_H_
+#define ABSL_BASE_CONST_INIT_H_
+
+#include "absl/base/config.h"
+
+// In general, objects with static storage duration (such as global variables)
+// can trigger tricky object lifetime situations.  Attempting to access them
+// from the constructors or destructors of other global objects can result in
+// undefined behavior, unless their constructors and destructors are designed
+// with this issue in mind.
+//
+// The normal way to deal with this issue in C++11 is to use constant
+// initialization and trivial destructors.
+//
+// Constant initialization is guaranteed to occur before any other code
+// executes.  Constructors that are declared 'constexpr' are eligible for
+// constant initialization.  You can annotate a variable declaration with the
+// ABSL_CONST_INIT macro to express this intent.  For compilers that support
+// it, this annotation will cause a compilation error for declarations that
+// aren't subject to constant initialization (perhaps because a runtime value
+// was passed as a constructor argument).
+//
+// On program shutdown, lifetime issues can be avoided on global objects by
+// ensuring that they contain  trivial destructors.  A class has a trivial
+// destructor unless it has a user-defined destructor, a virtual method or base
+// class, or a data member or base class with a non-trivial destructor of its
+// own.  Objects with static storage duration and a trivial destructor are not
+// cleaned up on program shutdown, and are thus safe to access from other code
+// running during shutdown.
+//
+// For a few core Abseil classes, we make a best effort to allow for safe global
+// instances, even though these classes have non-trivial destructors.  These
+// objects can be created with the absl::kConstInit tag.  For example:
+//   ABSL_CONST_INIT absl::Mutex global_mutex(absl::kConstInit);
+//
+// The line above declares a global variable of type absl::Mutex which can be
+// accessed at any point during startup or shutdown.  global_mutex's destructor
+// will still run, but will not invalidate the object.  Note that C++ specifies
+// that accessing an object after its destructor has run results in undefined
+// behavior, but this pattern works on the toolchains we support.
+//
+// The absl::kConstInit tag should only be used to define objects with static
+// or thread_local storage duration.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+enum ConstInitType {
+  kConstInit,
+};
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_CONST_INIT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.cc b/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.cc
new file mode 100644
index 0000000..21e822e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.cc	
@@ -0,0 +1,129 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "absl/base/dynamic_annotations.h"
+
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+
+/* Compiler-based ThreadSanitizer defines
+   DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL = 1
+   and provides its own definitions of the functions. */
+
+#ifndef DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL
+# define DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL 0
+#endif
+
+/* Each function is empty and called (via a macro) only in debug mode.
+   The arguments are captured by dynamic tools at runtime. */
+
+#if DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0 && !defined(__native_client__)
+
+#if __has_feature(memory_sanitizer)
+#include <sanitizer/msan_interface.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void AnnotateRWLockCreate(const char *, int,
+                          const volatile void *){}
+void AnnotateRWLockDestroy(const char *, int,
+                           const volatile void *){}
+void AnnotateRWLockAcquired(const char *, int,
+                            const volatile void *, long){}
+void AnnotateRWLockReleased(const char *, int,
+                            const volatile void *, long){}
+void AnnotateBenignRace(const char *, int,
+                        const volatile void *,
+                        const char *){}
+void AnnotateBenignRaceSized(const char *, int,
+                             const volatile void *,
+                             size_t,
+                             const char *) {}
+void AnnotateThreadName(const char *, int,
+                        const char *){}
+void AnnotateIgnoreReadsBegin(const char *, int){}
+void AnnotateIgnoreReadsEnd(const char *, int){}
+void AnnotateIgnoreWritesBegin(const char *, int){}
+void AnnotateIgnoreWritesEnd(const char *, int){}
+void AnnotateEnableRaceDetection(const char *, int, int){}
+void AnnotateMemoryIsInitialized(const char *, int,
+                                 const volatile void *mem, size_t size) {
+#if __has_feature(memory_sanitizer)
+  __msan_unpoison(mem, size);
+#else
+  (void)mem;
+  (void)size;
+#endif
+}
+
+void AnnotateMemoryIsUninitialized(const char *, int,
+                                   const volatile void *mem, size_t size) {
+#if __has_feature(memory_sanitizer)
+  __msan_allocated_memory(mem, size);
+#else
+  (void)mem;
+  (void)size;
+#endif
+}
+
+static int GetRunningOnValgrind(void) {
+#ifdef RUNNING_ON_VALGRIND
+  if (RUNNING_ON_VALGRIND) return 1;
+#endif
+  char *running_on_valgrind_str = getenv("RUNNING_ON_VALGRIND");
+  if (running_on_valgrind_str) {
+    return strcmp(running_on_valgrind_str, "0") != 0;
+  }
+  return 0;
+}
+
+/* See the comments in dynamic_annotations.h */
+int RunningOnValgrind(void) {
+  static volatile int running_on_valgrind = -1;
+  int local_running_on_valgrind = running_on_valgrind;
+  /* C doesn't have thread-safe initialization of statics, and we
+     don't want to depend on pthread_once here, so hack it. */
+  ANNOTATE_BENIGN_RACE(&running_on_valgrind, "safe hack");
+  if (local_running_on_valgrind == -1)
+    running_on_valgrind = local_running_on_valgrind = GetRunningOnValgrind();
+  return local_running_on_valgrind;
+}
+
+/* See the comments in dynamic_annotations.h */
+double ValgrindSlowdown(void) {
+  /* Same initialization hack as in RunningOnValgrind(). */
+  static volatile double slowdown = 0.0;
+  double local_slowdown = slowdown;
+  ANNOTATE_BENIGN_RACE(&slowdown, "safe hack");
+  if (RunningOnValgrind() == 0) {
+    return 1.0;
+  }
+  if (local_slowdown == 0.0) {
+    char *env = getenv("VALGRIND_SLOWDOWN");
+    slowdown = local_slowdown = env ? atof(env) : 50.0;
+  }
+  return local_slowdown;
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+#endif  /* DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0 */
diff --git a/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.h b/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.h
new file mode 100644
index 0000000..65a54b4
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/dynamic_annotations.h	
@@ -0,0 +1,389 @@
+/*
+ *  Copyright 2017 The Abseil Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* This file defines dynamic annotations for use with dynamic analysis
+   tool such as valgrind, PIN, etc.
+
+   Dynamic annotation is a source code annotation that affects
+   the generated code (that is, the annotation is not a comment).
+   Each such annotation is attached to a particular
+   instruction and/or to a particular object (address) in the program.
+
+   The annotations that should be used by users are macros in all upper-case
+   (e.g., ANNOTATE_THREAD_NAME).
+
+   Actual implementation of these macros may differ depending on the
+   dynamic analysis tool being used.
+
+   This file supports the following configurations:
+   - Dynamic Annotations enabled (with static thread-safety warnings disabled).
+     In this case, macros expand to functions implemented by Thread Sanitizer,
+     when building with TSan. When not provided an external implementation,
+     dynamic_annotations.cc provides no-op implementations.
+
+   - Static Clang thread-safety warnings enabled.
+     When building with a Clang compiler that supports thread-safety warnings,
+     a subset of annotations can be statically-checked at compile-time. We
+     expand these macros to static-inline functions that can be analyzed for
+     thread-safety, but afterwards elided when building the final binary.
+
+   - All annotations are disabled.
+     If neither Dynamic Annotations nor Clang thread-safety warnings are
+     enabled, then all annotation-macros expand to empty. */
+
+#ifndef ABSL_BASE_DYNAMIC_ANNOTATIONS_H_
+#define ABSL_BASE_DYNAMIC_ANNOTATIONS_H_
+
+#ifndef DYNAMIC_ANNOTATIONS_ENABLED
+# define DYNAMIC_ANNOTATIONS_ENABLED 0
+#endif
+
+#if DYNAMIC_ANNOTATIONS_ENABLED != 0
+
+  /* -------------------------------------------------------------
+     Annotations that suppress errors.  It is usually better to express the
+     program's synchronization using the other annotations, but these can
+     be used when all else fails. */
+
+  /* Report that we may have a benign race at "pointer", with size
+     "sizeof(*(pointer))". "pointer" must be a non-void* pointer.  Insert at the
+     point where "pointer" has been allocated, preferably close to the point
+     where the race happens.  See also ANNOTATE_BENIGN_RACE_STATIC. */
+  #define ANNOTATE_BENIGN_RACE(pointer, description) \
+    AnnotateBenignRaceSized(__FILE__, __LINE__, pointer, \
+                            sizeof(*(pointer)), description)
+
+  /* Same as ANNOTATE_BENIGN_RACE(address, description), but applies to
+     the memory range [address, address+size). */
+  #define ANNOTATE_BENIGN_RACE_SIZED(address, size, description) \
+    AnnotateBenignRaceSized(__FILE__, __LINE__, address, size, description)
+
+  /* Enable (enable!=0) or disable (enable==0) race detection for all threads.
+     This annotation could be useful if you want to skip expensive race analysis
+     during some period of program execution, e.g. during initialization. */
+  #define ANNOTATE_ENABLE_RACE_DETECTION(enable) \
+    AnnotateEnableRaceDetection(__FILE__, __LINE__, enable)
+
+  /* -------------------------------------------------------------
+     Annotations useful for debugging. */
+
+  /* Report the current thread name to a race detector. */
+  #define ANNOTATE_THREAD_NAME(name) \
+    AnnotateThreadName(__FILE__, __LINE__, name)
+
+  /* -------------------------------------------------------------
+     Annotations useful when implementing locks.  They are not
+     normally needed by modules that merely use locks.
+     The "lock" argument is a pointer to the lock object. */
+
+  /* Report that a lock has been created at address "lock". */
+  #define ANNOTATE_RWLOCK_CREATE(lock) \
+    AnnotateRWLockCreate(__FILE__, __LINE__, lock)
+
+  /* Report that a linker initialized lock has been created at address "lock".
+   */
+#ifdef THREAD_SANITIZER
+  #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) \
+    AnnotateRWLockCreateStatic(__FILE__, __LINE__, lock)
+#else
+  #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) ANNOTATE_RWLOCK_CREATE(lock)
+#endif
+
+  /* Report that the lock at address "lock" is about to be destroyed. */
+  #define ANNOTATE_RWLOCK_DESTROY(lock) \
+    AnnotateRWLockDestroy(__FILE__, __LINE__, lock)
+
+  /* Report that the lock at address "lock" has been acquired.
+     is_w=1 for writer lock, is_w=0 for reader lock. */
+  #define ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) \
+    AnnotateRWLockAcquired(__FILE__, __LINE__, lock, is_w)
+
+  /* Report that the lock at address "lock" is about to be released. */
+  #define ANNOTATE_RWLOCK_RELEASED(lock, is_w) \
+    AnnotateRWLockReleased(__FILE__, __LINE__, lock, is_w)
+
+#else  /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */
+
+  #define ANNOTATE_RWLOCK_CREATE(lock) /* empty */
+  #define ANNOTATE_RWLOCK_CREATE_STATIC(lock) /* empty */
+  #define ANNOTATE_RWLOCK_DESTROY(lock) /* empty */
+  #define ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) /* empty */
+  #define ANNOTATE_RWLOCK_RELEASED(lock, is_w) /* empty */
+  #define ANNOTATE_BENIGN_RACE(address, description) /* empty */
+  #define ANNOTATE_BENIGN_RACE_SIZED(address, size, description) /* empty */
+  #define ANNOTATE_THREAD_NAME(name) /* empty */
+  #define ANNOTATE_ENABLE_RACE_DETECTION(enable) /* empty */
+
+#endif  /* DYNAMIC_ANNOTATIONS_ENABLED */
+
+/* These annotations are also made available to LLVM's Memory Sanitizer */
+#if DYNAMIC_ANNOTATIONS_ENABLED == 1 || defined(MEMORY_SANITIZER)
+  #define ANNOTATE_MEMORY_IS_INITIALIZED(address, size) \
+    AnnotateMemoryIsInitialized(__FILE__, __LINE__, address, size)
+
+  #define ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) \
+    AnnotateMemoryIsUninitialized(__FILE__, __LINE__, address, size)
+#else
+  #define ANNOTATE_MEMORY_IS_INITIALIZED(address, size) /* empty */
+  #define ANNOTATE_MEMORY_IS_UNINITIALIZED(address, size) /* empty */
+#endif  /* DYNAMIC_ANNOTATIONS_ENABLED || MEMORY_SANITIZER */
+
+/* TODO(delesley) -- Replace __CLANG_SUPPORT_DYN_ANNOTATION__ with the
+   appropriate feature ID. */
+#if defined(__clang__) && (!defined(SWIG)) \
+    && defined(__CLANG_SUPPORT_DYN_ANNOTATION__)
+
+  #if DYNAMIC_ANNOTATIONS_ENABLED == 0
+    #define ANNOTALYSIS_ENABLED
+  #endif
+
+  /* When running in opt-mode, GCC will issue a warning, if these attributes are
+     compiled. Only include them when compiling using Clang. */
+  #define ATTRIBUTE_IGNORE_READS_BEGIN \
+      __attribute((exclusive_lock_function("*")))
+  #define ATTRIBUTE_IGNORE_READS_END \
+      __attribute((unlock_function("*")))
+#else
+  #define ATTRIBUTE_IGNORE_READS_BEGIN  /* empty */
+  #define ATTRIBUTE_IGNORE_READS_END  /* empty */
+#endif  /* defined(__clang__) && ... */
+
+#if (DYNAMIC_ANNOTATIONS_ENABLED != 0) || defined(ANNOTALYSIS_ENABLED)
+  #define ANNOTATIONS_ENABLED
+#endif
+
+#if (DYNAMIC_ANNOTATIONS_ENABLED != 0)
+
+  /* Request the analysis tool to ignore all reads in the current thread
+     until ANNOTATE_IGNORE_READS_END is called.
+     Useful to ignore intentional racey reads, while still checking
+     other reads and all writes.
+     See also ANNOTATE_UNPROTECTED_READ. */
+  #define ANNOTATE_IGNORE_READS_BEGIN() \
+    AnnotateIgnoreReadsBegin(__FILE__, __LINE__)
+
+  /* Stop ignoring reads. */
+  #define ANNOTATE_IGNORE_READS_END() \
+    AnnotateIgnoreReadsEnd(__FILE__, __LINE__)
+
+  /* Similar to ANNOTATE_IGNORE_READS_BEGIN, but ignore writes instead. */
+  #define ANNOTATE_IGNORE_WRITES_BEGIN() \
+    AnnotateIgnoreWritesBegin(__FILE__, __LINE__)
+
+  /* Stop ignoring writes. */
+  #define ANNOTATE_IGNORE_WRITES_END() \
+    AnnotateIgnoreWritesEnd(__FILE__, __LINE__)
+
+/* Clang provides limited support for static thread-safety analysis
+   through a feature called Annotalysis. We configure macro-definitions
+   according to whether Annotalysis support is available. */
+#elif defined(ANNOTALYSIS_ENABLED)
+
+  #define ANNOTATE_IGNORE_READS_BEGIN() \
+    StaticAnnotateIgnoreReadsBegin(__FILE__, __LINE__)
+
+  #define ANNOTATE_IGNORE_READS_END() \
+    StaticAnnotateIgnoreReadsEnd(__FILE__, __LINE__)
+
+  #define ANNOTATE_IGNORE_WRITES_BEGIN() \
+    StaticAnnotateIgnoreWritesBegin(__FILE__, __LINE__)
+
+  #define ANNOTATE_IGNORE_WRITES_END() \
+    StaticAnnotateIgnoreWritesEnd(__FILE__, __LINE__)
+
+#else
+  #define ANNOTATE_IGNORE_READS_BEGIN()  /* empty */
+  #define ANNOTATE_IGNORE_READS_END()  /* empty */
+  #define ANNOTATE_IGNORE_WRITES_BEGIN()  /* empty */
+  #define ANNOTATE_IGNORE_WRITES_END()  /* empty */
+#endif
+
+/* Implement the ANNOTATE_IGNORE_READS_AND_WRITES_* annotations using the more
+   primitive annotations defined above. */
+#if defined(ANNOTATIONS_ENABLED)
+
+  /* Start ignoring all memory accesses (both reads and writes). */
+  #define ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN() \
+    do {                                           \
+      ANNOTATE_IGNORE_READS_BEGIN();               \
+      ANNOTATE_IGNORE_WRITES_BEGIN();              \
+    }while (0)
+
+  /* Stop ignoring both reads and writes. */
+  #define ANNOTATE_IGNORE_READS_AND_WRITES_END()   \
+    do {                                           \
+      ANNOTATE_IGNORE_WRITES_END();                \
+      ANNOTATE_IGNORE_READS_END();                 \
+    }while (0)
+
+#else
+  #define ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN()  /* empty */
+  #define ANNOTATE_IGNORE_READS_AND_WRITES_END()  /* empty */
+#endif
+
+/* Use the macros above rather than using these functions directly. */
+#include <stddef.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+void AnnotateRWLockCreate(const char *file, int line,
+                          const volatile void *lock);
+void AnnotateRWLockCreateStatic(const char *file, int line,
+                          const volatile void *lock);
+void AnnotateRWLockDestroy(const char *file, int line,
+                           const volatile void *lock);
+void AnnotateRWLockAcquired(const char *file, int line,
+                            const volatile void *lock, long is_w);  /* NOLINT */
+void AnnotateRWLockReleased(const char *file, int line,
+                            const volatile void *lock, long is_w);  /* NOLINT */
+void AnnotateBenignRace(const char *file, int line,
+                        const volatile void *address,
+                        const char *description);
+void AnnotateBenignRaceSized(const char *file, int line,
+                        const volatile void *address,
+                        size_t size,
+                        const char *description);
+void AnnotateThreadName(const char *file, int line,
+                        const char *name);
+void AnnotateEnableRaceDetection(const char *file, int line, int enable);
+void AnnotateMemoryIsInitialized(const char *file, int line,
+                                 const volatile void *mem, size_t size);
+void AnnotateMemoryIsUninitialized(const char *file, int line,
+                                   const volatile void *mem, size_t size);
+
+/* Annotations expand to these functions, when Dynamic Annotations are enabled.
+   These functions are either implemented as no-op calls, if no Sanitizer is
+   attached, or provided with externally-linked implementations by a library
+   like ThreadSanitizer. */
+void AnnotateIgnoreReadsBegin(const char *file, int line)
+    ATTRIBUTE_IGNORE_READS_BEGIN;
+void AnnotateIgnoreReadsEnd(const char *file, int line)
+    ATTRIBUTE_IGNORE_READS_END;
+void AnnotateIgnoreWritesBegin(const char *file, int line);
+void AnnotateIgnoreWritesEnd(const char *file, int line);
+
+#if defined(ANNOTALYSIS_ENABLED)
+/* When Annotalysis is enabled without Dynamic Annotations, the use of
+   static-inline functions allows the annotations to be read at compile-time,
+   while still letting the compiler elide the functions from the final build.
+
+   TODO(delesley) -- The exclusive lock here ignores writes as well, but
+   allows IGNORE_READS_AND_WRITES to work properly. */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
+static inline void StaticAnnotateIgnoreReadsBegin(const char *file, int line)
+    ATTRIBUTE_IGNORE_READS_BEGIN { (void)file; (void)line; }
+static inline void StaticAnnotateIgnoreReadsEnd(const char *file, int line)
+    ATTRIBUTE_IGNORE_READS_END { (void)file; (void)line; }
+static inline void StaticAnnotateIgnoreWritesBegin(
+    const char *file, int line) { (void)file; (void)line; }
+static inline void StaticAnnotateIgnoreWritesEnd(
+    const char *file, int line) { (void)file; (void)line; }
+#pragma GCC diagnostic pop
+#endif
+
+/* Return non-zero value if running under valgrind.
+
+  If "valgrind.h" is included into dynamic_annotations.cc,
+  the regular valgrind mechanism will be used.
+  See http://valgrind.org/docs/manual/manual-core-adv.html about
+  RUNNING_ON_VALGRIND and other valgrind "client requests".
+  The file "valgrind.h" may be obtained by doing
+     svn co svn://svn.valgrind.org/valgrind/trunk/include
+
+  If for some reason you can't use "valgrind.h" or want to fake valgrind,
+  there are two ways to make this function return non-zero:
+    - Use environment variable: export RUNNING_ON_VALGRIND=1
+    - Make your tool intercept the function RunningOnValgrind() and
+      change its return value.
+ */
+int RunningOnValgrind(void);
+
+/* ValgrindSlowdown returns:
+    * 1.0, if (RunningOnValgrind() == 0)
+    * 50.0, if (RunningOnValgrind() != 0 && getenv("VALGRIND_SLOWDOWN") == NULL)
+    * atof(getenv("VALGRIND_SLOWDOWN")) otherwise
+   This function can be used to scale timeout values:
+   EXAMPLE:
+   for (;;) {
+     DoExpensiveBackgroundTask();
+     SleepForSeconds(5 * ValgrindSlowdown());
+   }
+ */
+double ValgrindSlowdown(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+/* ANNOTATE_UNPROTECTED_READ is the preferred way to annotate racey reads.
+
+     Instead of doing
+        ANNOTATE_IGNORE_READS_BEGIN();
+        ... = x;
+        ANNOTATE_IGNORE_READS_END();
+     one can use
+        ... = ANNOTATE_UNPROTECTED_READ(x); */
+#if defined(__cplusplus) && defined(ANNOTATIONS_ENABLED)
+template <typename T>
+inline T ANNOTATE_UNPROTECTED_READ(const volatile T &x) { /* NOLINT */
+  ANNOTATE_IGNORE_READS_BEGIN();
+  T res = x;
+  ANNOTATE_IGNORE_READS_END();
+  return res;
+  }
+#else
+  #define ANNOTATE_UNPROTECTED_READ(x) (x)
+#endif
+
+#if DYNAMIC_ANNOTATIONS_ENABLED != 0 && defined(__cplusplus)
+  /* Apply ANNOTATE_BENIGN_RACE_SIZED to a static variable. */
+  #define ANNOTATE_BENIGN_RACE_STATIC(static_var, description)        \
+    namespace {                                                       \
+      class static_var ## _annotator {                                \
+       public:                                                        \
+        static_var ## _annotator() {                                  \
+          ANNOTATE_BENIGN_RACE_SIZED(&static_var,                     \
+                                      sizeof(static_var),             \
+            # static_var ": " description);                           \
+        }                                                             \
+      };                                                              \
+      static static_var ## _annotator the ## static_var ## _annotator;\
+    }  // namespace
+#else /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */
+  #define ANNOTATE_BENIGN_RACE_STATIC(static_var, description)  /* empty */
+#endif /* DYNAMIC_ANNOTATIONS_ENABLED */
+
+#ifdef ADDRESS_SANITIZER
+/* Describe the current state of a contiguous container such as e.g.
+ * std::vector or std::string. For more details see
+ * sanitizer/common_interface_defs.h, which is provided by the compiler. */
+#include <sanitizer/common_interface_defs.h>
+#define ANNOTATE_CONTIGUOUS_CONTAINER(beg, end, old_mid, new_mid) \
+  __sanitizer_annotate_contiguous_container(beg, end, old_mid, new_mid)
+#define ADDRESS_SANITIZER_REDZONE(name)         \
+  struct { char x[8] __attribute__ ((aligned (8))); } name
+#else
+#define ANNOTATE_CONTIGUOUS_CONTAINER(beg, end, old_mid, new_mid)
+#define ADDRESS_SANITIZER_REDZONE(name) static_assert(true, "")
+#endif  // ADDRESS_SANITIZER
+
+/* Undefine the macros intended only in this file. */
+#undef ANNOTALYSIS_ENABLED
+#undef ANNOTATIONS_ENABLED
+#undef ATTRIBUTE_IGNORE_READS_BEGIN
+#undef ATTRIBUTE_IGNORE_READS_END
+
+#endif  /* ABSL_BASE_DYNAMIC_ANNOTATIONS_H_ */
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/atomic_hook.h b/ChattingApp 000/Pods/abseil/absl/base/internal/atomic_hook.h
new file mode 100644
index 0000000..ae21cd7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/atomic_hook.h	
@@ -0,0 +1,200 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
+#define ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
+
+#include <atomic>
+#include <cassert>
+#include <cstdint>
+#include <utility>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+
+#if defined(_MSC_VER) && !defined(__clang__)
+#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 0
+#else
+#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 1
+#endif
+
+#if defined(_MSC_VER)
+#define ABSL_HAVE_WORKING_ATOMIC_POINTER 0
+#else
+#define ABSL_HAVE_WORKING_ATOMIC_POINTER 1
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+template <typename T>
+class AtomicHook;
+
+// To workaround AtomicHook not being constant-initializable on some platforms,
+// prefer to annotate instances with `ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES`
+// instead of `ABSL_CONST_INIT`.
+#if ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+#define ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES ABSL_CONST_INIT
+#else
+#define ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
+#endif
+
+// `AtomicHook` is a helper class, templatized on a raw function pointer type,
+// for implementing Abseil customization hooks.  It is a callable object that
+// dispatches to the registered hook.  Objects of type `AtomicHook` must have
+// static or thread storage duration.
+//
+// A default constructed object performs a no-op (and returns a default
+// constructed object) if no hook has been registered.
+//
+// Hooks can be pre-registered via constant initialization, for example:
+//
+// ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static AtomicHook<void(*)()>
+//     my_hook(DefaultAction);
+//
+// and then changed at runtime via a call to `Store()`.
+//
+// Reads and writes guarantee memory_order_acquire/memory_order_release
+// semantics.
+template <typename ReturnType, typename... Args>
+class AtomicHook<ReturnType (*)(Args...)> {
+ public:
+  using FnPtr = ReturnType (*)(Args...);
+
+  // Constructs an object that by default performs a no-op (and
+  // returns a default constructed object) when no hook as been registered.
+  constexpr AtomicHook() : AtomicHook(DummyFunction) {}
+
+  // Constructs an object that by default dispatches to/returns the
+  // pre-registered default_fn when no hook has been registered at runtime.
+#if ABSL_HAVE_WORKING_ATOMIC_POINTER && ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+  explicit constexpr AtomicHook(FnPtr default_fn)
+      : hook_(default_fn), default_fn_(default_fn) {}
+#elif ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+  explicit constexpr AtomicHook(FnPtr default_fn)
+      : hook_(kUninitialized), default_fn_(default_fn) {}
+#else
+  // As of January 2020, on all known versions of MSVC this constructor runs in
+  // the global constructor sequence.  If `Store()` is called by a dynamic
+  // initializer, we want to preserve the value, even if this constructor runs
+  // after the call to `Store()`.  If not, `hook_` will be
+  // zero-initialized by the linker and we have no need to set it.
+  // https://developercommunity.visualstudio.com/content/problem/336946/class-with-constexpr-constructor-not-using-static.html
+  explicit constexpr AtomicHook(FnPtr default_fn)
+      : /* hook_(deliberately omitted), */ default_fn_(default_fn) {
+    static_assert(kUninitialized == 0, "here we rely on zero-initialization");
+  }
+#endif
+
+  // Stores the provided function pointer as the value for this hook.
+  //
+  // This is intended to be called once.  Multiple calls are legal only if the
+  // same function pointer is provided for each call.  The store is implemented
+  // as a memory_order_release operation, and read accesses are implemented as
+  // memory_order_acquire.
+  void Store(FnPtr fn) {
+    bool success = DoStore(fn);
+    static_cast<void>(success);
+    assert(success);
+  }
+
+  // Invokes the registered callback.  If no callback has yet been registered, a
+  // default-constructed object of the appropriate type is returned instead.
+  template <typename... CallArgs>
+  ReturnType operator()(CallArgs&&... args) const {
+    return DoLoad()(std::forward<CallArgs>(args)...);
+  }
+
+  // Returns the registered callback, or nullptr if none has been registered.
+  // Useful if client code needs to conditionalize behavior based on whether a
+  // callback was registered.
+  //
+  // Note that atomic_hook.Load()() and atomic_hook() have different semantics:
+  // operator()() will perform a no-op if no callback was registered, while
+  // Load()() will dereference a null function pointer.  Prefer operator()() to
+  // Load()() unless you must conditionalize behavior on whether a hook was
+  // registered.
+  FnPtr Load() const {
+    FnPtr ptr = DoLoad();
+    return (ptr == DummyFunction) ? nullptr : ptr;
+  }
+
+ private:
+  static ReturnType DummyFunction(Args...) {
+    return ReturnType();
+  }
+
+  // Current versions of MSVC (as of September 2017) have a broken
+  // implementation of std::atomic<T*>:  Its constructor attempts to do the
+  // equivalent of a reinterpret_cast in a constexpr context, which is not
+  // allowed.
+  //
+  // This causes an issue when building with LLVM under Windows.  To avoid this,
+  // we use a less-efficient, intptr_t-based implementation on Windows.
+#if ABSL_HAVE_WORKING_ATOMIC_POINTER
+  // Return the stored value, or DummyFunction if no value has been stored.
+  FnPtr DoLoad() const { return hook_.load(std::memory_order_acquire); }
+
+  // Store the given value.  Returns false if a different value was already
+  // stored to this object.
+  bool DoStore(FnPtr fn) {
+    assert(fn);
+    FnPtr expected = default_fn_;
+    const bool store_succeeded = hook_.compare_exchange_strong(
+        expected, fn, std::memory_order_acq_rel, std::memory_order_acquire);
+    const bool same_value_already_stored = (expected == fn);
+    return store_succeeded || same_value_already_stored;
+  }
+
+  std::atomic<FnPtr> hook_;
+#else  // !ABSL_HAVE_WORKING_ATOMIC_POINTER
+  // Use a sentinel value unlikely to be the address of an actual function.
+  static constexpr intptr_t kUninitialized = 0;
+
+  static_assert(sizeof(intptr_t) >= sizeof(FnPtr),
+                "intptr_t can't contain a function pointer");
+
+  FnPtr DoLoad() const {
+    const intptr_t value = hook_.load(std::memory_order_acquire);
+    if (value == kUninitialized) {
+      return default_fn_;
+    }
+    return reinterpret_cast<FnPtr>(value);
+  }
+
+  bool DoStore(FnPtr fn) {
+    assert(fn);
+    const auto value = reinterpret_cast<intptr_t>(fn);
+    intptr_t expected = kUninitialized;
+    const bool store_succeeded = hook_.compare_exchange_strong(
+        expected, value, std::memory_order_acq_rel, std::memory_order_acquire);
+    const bool same_value_already_stored = (expected == value);
+    return store_succeeded || same_value_already_stored;
+  }
+
+  std::atomic<intptr_t> hook_;
+#endif
+
+  const FnPtr default_fn_;
+};
+
+#undef ABSL_HAVE_WORKING_ATOMIC_POINTER
+#undef ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/bits.h b/ChattingApp 000/Pods/abseil/absl/base/internal/bits.h
new file mode 100644
index 0000000..8b03453
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/bits.h	
@@ -0,0 +1,218 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_BITS_H_
+#define ABSL_BASE_INTERNAL_BITS_H_
+
+// This file contains bitwise ops which are implementation details of various
+// absl libraries.
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+// Clang on Windows has __builtin_clzll; otherwise we need to use the
+// windows intrinsic functions.
+#if defined(_MSC_VER)
+#include <intrin.h>
+#if defined(_M_X64)
+#pragma intrinsic(_BitScanReverse64)
+#pragma intrinsic(_BitScanForward64)
+#endif
+#pragma intrinsic(_BitScanReverse)
+#pragma intrinsic(_BitScanForward)
+#endif
+
+#include "absl/base/attributes.h"
+
+#if defined(_MSC_VER)
+// We can achieve something similar to attribute((always_inline)) with MSVC by
+// using the __forceinline keyword, however this is not perfect. MSVC is
+// much less aggressive about inlining, and even with the __forceinline keyword.
+#define ABSL_BASE_INTERNAL_FORCEINLINE __forceinline
+#else
+// Use default attribute inline.
+#define ABSL_BASE_INTERNAL_FORCEINLINE inline ABSL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros64Slow(uint64_t n) {
+  int zeroes = 60;
+  if (n >> 32) {
+    zeroes -= 32;
+    n >>= 32;
+  }
+  if (n >> 16) {
+    zeroes -= 16;
+    n >>= 16;
+  }
+  if (n >> 8) {
+    zeroes -= 8;
+    n >>= 8;
+  }
+  if (n >> 4) {
+    zeroes -= 4;
+    n >>= 4;
+  }
+  return "\4\3\2\2\1\1\1\1\0\0\0\0\0\0\0"[n] + zeroes;
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros64(uint64_t n) {
+#if defined(_MSC_VER) && defined(_M_X64)
+  // MSVC does not have __buitin_clzll. Use _BitScanReverse64.
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  if (_BitScanReverse64(&result, n)) {
+    return 63 - result;
+  }
+  return 64;
+#elif defined(_MSC_VER)
+  // MSVC does not have __buitin_clzll. Compose two calls to _BitScanReverse
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  if ((n >> 32) && _BitScanReverse(&result, n >> 32)) {
+    return 31 - result;
+  }
+  if (_BitScanReverse(&result, n)) {
+    return 63 - result;
+  }
+  return 64;
+#elif defined(__GNUC__)
+  // Use __builtin_clzll, which uses the following instructions:
+  //  x86: bsr
+  //  ARM64: clz
+  //  PPC: cntlzd
+  static_assert(sizeof(unsigned long long) == sizeof(n),  // NOLINT(runtime/int)
+                "__builtin_clzll does not take 64-bit arg");
+
+  // Handle 0 as a special case because __builtin_clzll(0) is undefined.
+  if (n == 0) {
+    return 64;
+  }
+  return __builtin_clzll(n);
+#else
+  return CountLeadingZeros64Slow(n);
+#endif
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros32Slow(uint64_t n) {
+  int zeroes = 28;
+  if (n >> 16) {
+    zeroes -= 16;
+    n >>= 16;
+  }
+  if (n >> 8) {
+    zeroes -= 8;
+    n >>= 8;
+  }
+  if (n >> 4) {
+    zeroes -= 4;
+    n >>= 4;
+  }
+  return "\4\3\2\2\1\1\1\1\0\0\0\0\0\0\0"[n] + zeroes;
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros32(uint32_t n) {
+#if defined(_MSC_VER)
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  if (_BitScanReverse(&result, n)) {
+    return 31 - result;
+  }
+  return 32;
+#elif defined(__GNUC__)
+  // Use __builtin_clz, which uses the following instructions:
+  //  x86: bsr
+  //  ARM64: clz
+  //  PPC: cntlzd
+  static_assert(sizeof(int) == sizeof(n),
+                "__builtin_clz does not take 32-bit arg");
+
+  // Handle 0 as a special case because __builtin_clz(0) is undefined.
+  if (n == 0) {
+    return 32;
+  }
+  return __builtin_clz(n);
+#else
+  return CountLeadingZeros32Slow(n);
+#endif
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero64Slow(uint64_t n) {
+  int c = 63;
+  n &= ~n + 1;
+  if (n & 0x00000000FFFFFFFF) c -= 32;
+  if (n & 0x0000FFFF0000FFFF) c -= 16;
+  if (n & 0x00FF00FF00FF00FF) c -= 8;
+  if (n & 0x0F0F0F0F0F0F0F0F) c -= 4;
+  if (n & 0x3333333333333333) c -= 2;
+  if (n & 0x5555555555555555) c -= 1;
+  return c;
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero64(uint64_t n) {
+#if defined(_MSC_VER) && defined(_M_X64)
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  _BitScanForward64(&result, n);
+  return result;
+#elif defined(_MSC_VER)
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  if (static_cast<uint32_t>(n) == 0) {
+    _BitScanForward(&result, n >> 32);
+    return result + 32;
+  }
+  _BitScanForward(&result, n);
+  return result;
+#elif defined(__GNUC__)
+  static_assert(sizeof(unsigned long long) == sizeof(n),  // NOLINT(runtime/int)
+                "__builtin_ctzll does not take 64-bit arg");
+  return __builtin_ctzll(n);
+#else
+  return CountTrailingZerosNonZero64Slow(n);
+#endif
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero32Slow(uint32_t n) {
+  int c = 31;
+  n &= ~n + 1;
+  if (n & 0x0000FFFF) c -= 16;
+  if (n & 0x00FF00FF) c -= 8;
+  if (n & 0x0F0F0F0F) c -= 4;
+  if (n & 0x33333333) c -= 2;
+  if (n & 0x55555555) c -= 1;
+  return c;
+}
+
+ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero32(uint32_t n) {
+#if defined(_MSC_VER)
+  unsigned long result = 0;  // NOLINT(runtime/int)
+  _BitScanForward(&result, n);
+  return result;
+#elif defined(__GNUC__)
+  static_assert(sizeof(int) == sizeof(n),
+                "__builtin_ctz does not take 32-bit arg");
+  return __builtin_ctz(n);
+#else
+  return CountTrailingZerosNonZero32Slow(n);
+#endif
+}
+
+#undef ABSL_BASE_INTERNAL_FORCEINLINE
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_BITS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.cc
new file mode 100644
index 0000000..0e65005
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.cc	
@@ -0,0 +1,107 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The implementation of CycleClock::Frequency.
+//
+// NOTE: only i386 and x86_64 have been well tested.
+// PPC, sparc, alpha, and ia64 are based on
+//    http://peter.kuscsik.com/wordpress/?p=14
+// with modifications by m3b.  See also
+//    https://setisvn.ssl.berkeley.edu/svn/lib/fftw-3.0.1/kernel/cycle.h
+
+#include "absl/base/internal/cycleclock.h"
+
+#include <atomic>
+#include <chrono>  // NOLINT(build/c++11)
+
+#include "absl/base/internal/unscaledcycleclock.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+namespace {
+
+#ifdef NDEBUG
+#ifdef ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+// Not debug mode and the UnscaledCycleClock frequency is the CPU
+// frequency.  Scale the CycleClock to prevent overflow if someone
+// tries to represent the time as cycles since the Unix epoch.
+static constexpr int32_t kShift = 1;
+#else
+// Not debug mode and the UnscaledCycleClock isn't operating at the
+// raw CPU frequency. There is no need to do any scaling, so don't
+// needlessly sacrifice precision.
+static constexpr int32_t kShift = 0;
+#endif
+#else
+// In debug mode use a different shift to discourage depending on a
+// particular shift value.
+static constexpr int32_t kShift = 2;
+#endif
+
+static constexpr double kFrequencyScale = 1.0 / (1 << kShift);
+static std::atomic<CycleClockSourceFunc> cycle_clock_source;
+
+CycleClockSourceFunc LoadCycleClockSource() {
+  // Optimize for the common case (no callback) by first doing a relaxed load;
+  // this is significantly faster on non-x86 platforms.
+  if (cycle_clock_source.load(std::memory_order_relaxed) == nullptr) {
+    return nullptr;
+  }
+  // This corresponds to the store(std::memory_order_release) in
+  // CycleClockSource::Register, and makes sure that any updates made prior to
+  // registering the callback are visible to this thread before the callback is
+  // invoked.
+  return cycle_clock_source.load(std::memory_order_acquire);
+}
+
+}  // namespace
+
+int64_t CycleClock::Now() {
+  auto fn = LoadCycleClockSource();
+  if (fn == nullptr) {
+    return base_internal::UnscaledCycleClock::Now() >> kShift;
+  }
+  return fn() >> kShift;
+}
+
+double CycleClock::Frequency() {
+  return kFrequencyScale * base_internal::UnscaledCycleClock::Frequency();
+}
+
+void CycleClockSource::Register(CycleClockSourceFunc source) {
+  // Corresponds to the load(std::memory_order_acquire) in LoadCycleClockSource.
+  cycle_clock_source.store(source, std::memory_order_release);
+}
+
+#else
+
+int64_t CycleClock::Now() {
+  return std::chrono::duration_cast<std::chrono::nanoseconds>(
+             std::chrono::steady_clock::now().time_since_epoch())
+      .count();
+}
+
+double CycleClock::Frequency() {
+  return 1e9;
+}
+
+#endif
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.h b/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.h
new file mode 100644
index 0000000..a18b584
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/cycleclock.h	
@@ -0,0 +1,94 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// -----------------------------------------------------------------------------
+// File: cycleclock.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a `CycleClock`, which yields the value and frequency
+// of a cycle counter that increments at a rate that is approximately constant.
+//
+// NOTE:
+//
+// The cycle counter frequency is not necessarily related to the core clock
+// frequency and should not be treated as such. That is, `CycleClock` cycles are
+// not necessarily "CPU cycles" and code should not rely on that behavior, even
+// if experimentally observed.
+//
+// An arbitrary offset may have been added to the counter at power on.
+//
+// On some platforms, the rate and offset of the counter may differ
+// slightly when read from different CPUs of a multiprocessor. Usually,
+// we try to ensure that the operating system adjusts values periodically
+// so that values agree approximately.   If you need stronger guarantees,
+// consider using alternate interfaces.
+//
+// The CPU is not required to maintain the ordering of a cycle counter read
+// with respect to surrounding instructions.
+
+#ifndef ABSL_BASE_INTERNAL_CYCLECLOCK_H_
+#define ABSL_BASE_INTERNAL_CYCLECLOCK_H_
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// -----------------------------------------------------------------------------
+// CycleClock
+// -----------------------------------------------------------------------------
+class CycleClock {
+ public:
+  // CycleClock::Now()
+  //
+  // Returns the value of a cycle counter that counts at a rate that is
+  // approximately constant.
+  static int64_t Now();
+
+  // CycleClock::Frequency()
+  //
+  // Returns the amount by which `CycleClock::Now()` increases per second. Note
+  // that this value may not necessarily match the core CPU clock frequency.
+  static double Frequency();
+
+ private:
+  CycleClock() = delete;  // no instances
+  CycleClock(const CycleClock&) = delete;
+  CycleClock& operator=(const CycleClock&) = delete;
+};
+
+using CycleClockSourceFunc = int64_t (*)();
+
+class CycleClockSource {
+ private:
+  // CycleClockSource::Register()
+  //
+  // Register a function that provides an alternate source for the unscaled CPU
+  // cycle count value. The source function must be async signal safe, must not
+  // call CycleClock::Now(), and must have a frequency that matches that of the
+  // unscaled clock used by CycleClock. A nullptr value resets CycleClock to use
+  // the default source.
+  static void Register(CycleClockSourceFunc source);
+};
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_CYCLECLOCK_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/direct_mmap.h b/ChattingApp 000/Pods/abseil/absl/base/internal/direct_mmap.h
new file mode 100644
index 0000000..5618867
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/direct_mmap.h	
@@ -0,0 +1,161 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Functions for directly invoking mmap() via syscall, avoiding the case where
+// mmap() has been locally overridden.
+
+#ifndef ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
+#define ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
+
+#include "absl/base/config.h"
+
+#if ABSL_HAVE_MMAP
+
+#include <sys/mman.h>
+
+#ifdef __linux__
+
+#include <sys/types.h>
+#ifdef __BIONIC__
+#include <sys/syscall.h>
+#else
+#include <syscall.h>
+#endif
+
+#include <linux/unistd.h>
+#include <unistd.h>
+#include <cerrno>
+#include <cstdarg>
+#include <cstdint>
+
+#ifdef __mips__
+// Include definitions of the ABI currently in use.
+#ifdef __BIONIC__
+// Android doesn't have sgidefs.h, but does have asm/sgidefs.h, which has the
+// definitions we need.
+#include <asm/sgidefs.h>
+#else
+#include <sgidefs.h>
+#endif  // __BIONIC__
+#endif  // __mips__
+
+// SYS_mmap and SYS_munmap are not defined in Android.
+#ifdef __BIONIC__
+extern "C" void* __mmap2(void*, size_t, int, int, int, size_t);
+#if defined(__NR_mmap) && !defined(SYS_mmap)
+#define SYS_mmap __NR_mmap
+#endif
+#ifndef SYS_munmap
+#define SYS_munmap __NR_munmap
+#endif
+#endif  // __BIONIC__
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Platform specific logic extracted from
+// https://chromium.googlesource.com/linux-syscall-support/+/master/linux_syscall_support.h
+inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
+                        off64_t offset) noexcept {
+#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \
+    (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                   \
+    (defined(__PPC__) && !defined(__PPC64__)) ||                             \
+    (defined(__s390__) && !defined(__s390x__))
+  // On these architectures, implement mmap with mmap2.
+  static int pagesize = 0;
+  if (pagesize == 0) {
+#if defined(__wasm__) || defined(__asmjs__)
+    pagesize = getpagesize();
+#else
+    pagesize = sysconf(_SC_PAGESIZE);
+#endif
+  }
+  if (offset < 0 || offset % pagesize != 0) {
+    errno = EINVAL;
+    return MAP_FAILED;
+  }
+#ifdef __BIONIC__
+  // SYS_mmap2 has problems on Android API level <= 16.
+  // Workaround by invoking __mmap2() instead.
+  return __mmap2(start, length, prot, flags, fd, offset / pagesize);
+#else
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap2, start, length, prot, flags, fd,
+              static_cast<off_t>(offset / pagesize)));
+#endif
+#elif defined(__s390x__)
+  // On s390x, mmap() arguments are passed in memory.
+  unsigned long buf[6] = {reinterpret_cast<unsigned long>(start),  // NOLINT
+                          static_cast<unsigned long>(length),      // NOLINT
+                          static_cast<unsigned long>(prot),        // NOLINT
+                          static_cast<unsigned long>(flags),       // NOLINT
+                          static_cast<unsigned long>(fd),          // NOLINT
+                          static_cast<unsigned long>(offset)};     // NOLINT
+  return reinterpret_cast<void*>(syscall(SYS_mmap, buf));
+#elif defined(__x86_64__)
+// The x32 ABI has 32 bit longs, but the syscall interface is 64 bit.
+// We need to explicitly cast to an unsigned 64 bit type to avoid implicit
+// sign extension.  We can't cast pointers directly because those are
+// 32 bits, and gcc will dump ugly warnings about casting from a pointer
+// to an integer of a different size. We also need to make sure __off64_t
+// isn't truncated to 32-bits under x32.
+#define MMAP_SYSCALL_ARG(x) ((uint64_t)(uintptr_t)(x))
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap, MMAP_SYSCALL_ARG(start), MMAP_SYSCALL_ARG(length),
+              MMAP_SYSCALL_ARG(prot), MMAP_SYSCALL_ARG(flags),
+              MMAP_SYSCALL_ARG(fd), static_cast<uint64_t>(offset)));
+#undef MMAP_SYSCALL_ARG
+#else  // Remaining 64-bit aritectures.
+  static_assert(sizeof(unsigned long) == 8, "Platform is not 64-bit");
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap, start, length, prot, flags, fd, offset));
+#endif
+}
+
+inline int DirectMunmap(void* start, size_t length) {
+  return static_cast<int>(syscall(SYS_munmap, start, length));
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // !__linux__
+
+// For non-linux platforms where we have mmap, just dispatch directly to the
+// actual mmap()/munmap() methods.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
+                        off_t offset) {
+  return mmap(start, length, prot, flags, fd, offset);
+}
+
+inline int DirectMunmap(void* start, size_t length) {
+  return munmap(start, length);
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // __linux__
+
+#endif  // ABSL_HAVE_MMAP
+
+#endif  // ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/endian.h b/ChattingApp 000/Pods/abseil/absl/base/internal/endian.h
new file mode 100644
index 0000000..9677530
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/endian.h	
@@ -0,0 +1,266 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_ENDIAN_H_
+#define ABSL_BASE_INTERNAL_ENDIAN_H_
+
+// The following guarantees declaration of the byte swap functions
+#ifdef _MSC_VER
+#include <stdlib.h>  // NOLINT(build/include)
+#elif defined(__FreeBSD__)
+#include <sys/endian.h>
+#elif defined(__GLIBC__)
+#include <byteswap.h>  // IWYU pragma: export
+#endif
+
+#include <cstdint>
+#include "absl/base/config.h"
+#include "absl/base/internal/unaligned_access.h"
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Use compiler byte-swapping intrinsics if they are available.  32-bit
+// and 64-bit versions are available in Clang and GCC as of GCC 4.3.0.
+// The 16-bit version is available in Clang and GCC only as of GCC 4.8.0.
+// For simplicity, we enable them all only for GCC 4.8.0 or later.
+#if defined(__clang__) || \
+    (defined(__GNUC__) && \
+     ((__GNUC__ == 4 && __GNUC_MINOR__ >= 8) || __GNUC__ >= 5))
+inline uint64_t gbswap_64(uint64_t host_int) {
+  return __builtin_bswap64(host_int);
+}
+inline uint32_t gbswap_32(uint32_t host_int) {
+  return __builtin_bswap32(host_int);
+}
+inline uint16_t gbswap_16(uint16_t host_int) {
+  return __builtin_bswap16(host_int);
+}
+
+#elif defined(_MSC_VER)
+inline uint64_t gbswap_64(uint64_t host_int) {
+  return _byteswap_uint64(host_int);
+}
+inline uint32_t gbswap_32(uint32_t host_int) {
+  return _byteswap_ulong(host_int);
+}
+inline uint16_t gbswap_16(uint16_t host_int) {
+  return _byteswap_ushort(host_int);
+}
+
+#else
+inline uint64_t gbswap_64(uint64_t host_int) {
+#if defined(__GNUC__) && defined(__x86_64__) && !defined(__APPLE__)
+  // Adapted from /usr/include/byteswap.h.  Not available on Mac.
+  if (__builtin_constant_p(host_int)) {
+    return __bswap_constant_64(host_int);
+  } else {
+    uint64_t result;
+    __asm__("bswap %0" : "=r"(result) : "0"(host_int));
+    return result;
+  }
+#elif defined(__GLIBC__)
+  return bswap_64(host_int);
+#else
+  return (((host_int & uint64_t{0xFF}) << 56) |
+          ((host_int & uint64_t{0xFF00}) << 40) |
+          ((host_int & uint64_t{0xFF0000}) << 24) |
+          ((host_int & uint64_t{0xFF000000}) << 8) |
+          ((host_int & uint64_t{0xFF00000000}) >> 8) |
+          ((host_int & uint64_t{0xFF0000000000}) >> 24) |
+          ((host_int & uint64_t{0xFF000000000000}) >> 40) |
+          ((host_int & uint64_t{0xFF00000000000000}) >> 56));
+#endif  // bswap_64
+}
+
+inline uint32_t gbswap_32(uint32_t host_int) {
+#if defined(__GLIBC__)
+  return bswap_32(host_int);
+#else
+  return (((host_int & uint32_t{0xFF}) << 24) |
+          ((host_int & uint32_t{0xFF00}) << 8) |
+          ((host_int & uint32_t{0xFF0000}) >> 8) |
+          ((host_int & uint32_t{0xFF000000}) >> 24));
+#endif
+}
+
+inline uint16_t gbswap_16(uint16_t host_int) {
+#if defined(__GLIBC__)
+  return bswap_16(host_int);
+#else
+  return (((host_int & uint16_t{0xFF}) << 8) |
+          ((host_int & uint16_t{0xFF00}) >> 8));
+#endif
+}
+
+#endif  // intrinsics available
+
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+// Definitions for ntohl etc. that don't require us to include
+// netinet/in.h. We wrap gbswap_32 and gbswap_16 in functions rather
+// than just #defining them because in debug mode, gcc doesn't
+// correctly handle the (rather involved) definitions of bswap_32.
+// gcc guarantees that inline functions are as fast as macros, so
+// this isn't a performance hit.
+inline uint16_t ghtons(uint16_t x) { return gbswap_16(x); }
+inline uint32_t ghtonl(uint32_t x) { return gbswap_32(x); }
+inline uint64_t ghtonll(uint64_t x) { return gbswap_64(x); }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+// These definitions are simpler on big-endian machines
+// These are functions instead of macros to avoid self-assignment warnings
+// on calls such as "i = ghtnol(i);".  This also provides type checking.
+inline uint16_t ghtons(uint16_t x) { return x; }
+inline uint32_t ghtonl(uint32_t x) { return x; }
+inline uint64_t ghtonll(uint64_t x) { return x; }
+
+#else
+#error \
+    "Unsupported byte order: Either ABSL_IS_BIG_ENDIAN or " \
+       "ABSL_IS_LITTLE_ENDIAN must be defined"
+#endif  // byte order
+
+inline uint16_t gntohs(uint16_t x) { return ghtons(x); }
+inline uint32_t gntohl(uint32_t x) { return ghtonl(x); }
+inline uint64_t gntohll(uint64_t x) { return ghtonll(x); }
+
+// Utilities to convert numbers between the current hosts's native byte
+// order and little-endian byte order
+//
+// Load/Store methods are alignment safe
+namespace little_endian {
+// Conversion functions.
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return x; }
+inline uint16_t ToHost16(uint16_t x) { return x; }
+
+inline uint32_t FromHost32(uint32_t x) { return x; }
+inline uint32_t ToHost32(uint32_t x) { return x; }
+
+inline uint64_t FromHost64(uint64_t x) { return x; }
+inline uint64_t ToHost64(uint64_t x) { return x; }
+
+inline constexpr bool IsLittleEndian() { return true; }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); }
+inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); }
+
+inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); }
+inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); }
+
+inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); }
+inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); }
+
+inline constexpr bool IsLittleEndian() { return false; }
+
+#endif /* ENDIAN */
+
+// Functions to do unaligned loads and stores in little-endian order.
+inline uint16_t Load16(const void *p) {
+  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p));
+}
+
+inline void Store16(void *p, uint16_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v));
+}
+
+inline uint32_t Load32(const void *p) {
+  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p));
+}
+
+inline void Store32(void *p, uint32_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v));
+}
+
+inline uint64_t Load64(const void *p) {
+  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p));
+}
+
+inline void Store64(void *p, uint64_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v));
+}
+
+}  // namespace little_endian
+
+// Utilities to convert numbers between the current hosts's native byte
+// order and big-endian byte order (same as network byte order)
+//
+// Load/Store methods are alignment safe
+namespace big_endian {
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); }
+inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); }
+
+inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); }
+inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); }
+
+inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); }
+inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); }
+
+inline constexpr bool IsLittleEndian() { return true; }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return x; }
+inline uint16_t ToHost16(uint16_t x) { return x; }
+
+inline uint32_t FromHost32(uint32_t x) { return x; }
+inline uint32_t ToHost32(uint32_t x) { return x; }
+
+inline uint64_t FromHost64(uint64_t x) { return x; }
+inline uint64_t ToHost64(uint64_t x) { return x; }
+
+inline constexpr bool IsLittleEndian() { return false; }
+
+#endif /* ENDIAN */
+
+// Functions to do unaligned loads and stores in big-endian order.
+inline uint16_t Load16(const void *p) {
+  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p));
+}
+
+inline void Store16(void *p, uint16_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v));
+}
+
+inline uint32_t Load32(const void *p) {
+  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p));
+}
+
+inline void Store32(void *p, uint32_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v));
+}
+
+inline uint64_t Load64(const void *p) {
+  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p));
+}
+
+inline void Store64(void *p, uint64_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v));
+}
+
+}  // namespace big_endian
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_ENDIAN_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/errno_saver.h b/ChattingApp 000/Pods/abseil/absl/base/internal/errno_saver.h
new file mode 100644
index 0000000..251de51
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/errno_saver.h	
@@ -0,0 +1,43 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_ERRNO_SAVER_H_
+#define ABSL_BASE_INTERNAL_ERRNO_SAVER_H_
+
+#include <cerrno>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// `ErrnoSaver` captures the value of `errno` upon construction and restores it
+// upon deletion.  It is used in low-level code and must be super fast.  Do not
+// add instrumentation, even in debug modes.
+class ErrnoSaver {
+ public:
+  ErrnoSaver() : saved_errno_(errno) {}
+  ~ErrnoSaver() { errno = saved_errno_; }
+  int operator()() const { return saved_errno_; }
+
+ private:
+  const int saved_errno_;
+};
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_ERRNO_SAVER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.cc
new file mode 100644
index 0000000..1b30c06
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.cc	
@@ -0,0 +1,93 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/exponential_biased.h"
+
+#include <stdint.h>
+
+#include <algorithm>
+#include <atomic>
+#include <cmath>
+#include <limits>
+
+#include "absl/base/attributes.h"
+#include "absl/base/optimization.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// The algorithm generates a random number between 0 and 1 and applies the
+// inverse cumulative distribution function for an exponential. Specifically:
+// Let m be the inverse of the sample period, then the probability
+// distribution function is m*exp(-mx) so the CDF is
+// p = 1 - exp(-mx), so
+// q = 1 - p = exp(-mx)
+// log_e(q) = -mx
+// -log_e(q)/m = x
+// log_2(q) * (-log_e(2) * 1/m) = x
+// In the code, q is actually in the range 1 to 2**26, hence the -26 below
+int64_t ExponentialBiased::GetSkipCount(int64_t mean) {
+  if (ABSL_PREDICT_FALSE(!initialized_)) {
+    Initialize();
+  }
+
+  uint64_t rng = NextRandom(rng_);
+  rng_ = rng;
+
+  // Take the top 26 bits as the random number
+  // (This plus the 1<<58 sampling bound give a max possible step of
+  // 5194297183973780480 bytes.)
+  // The uint32_t cast is to prevent a (hard-to-reproduce) NAN
+  // under piii debug for some binaries.
+  double q = static_cast<uint32_t>(rng >> (kPrngNumBits - 26)) + 1.0;
+  // Put the computed p-value through the CDF of a geometric.
+  double interval = bias_ + (std::log2(q) - 26) * (-std::log(2.0) * mean);
+  // Very large values of interval overflow int64_t. To avoid that, we will
+  // cheat and clamp any huge values to (int64_t max)/2. This is a potential
+  // source of bias, but the mean would need to be such a large value that it's
+  // not likely to come up. For example, with a mean of 1e18, the probability of
+  // hitting this condition is about 1/1000. For a mean of 1e17, standard
+  // calculators claim that this event won't happen.
+  if (interval > static_cast<double>(std::numeric_limits<int64_t>::max() / 2)) {
+    // Assume huge values are bias neutral, retain bias for next call.
+    return std::numeric_limits<int64_t>::max() / 2;
+  }
+  double value = std::round(interval);
+  bias_ = interval - value;
+  return value;
+}
+
+int64_t ExponentialBiased::GetStride(int64_t mean) {
+  return GetSkipCount(mean - 1) + 1;
+}
+
+void ExponentialBiased::Initialize() {
+  // We don't get well distributed numbers from `this` so we call NextRandom() a
+  // bunch to mush the bits around. We use a global_rand to handle the case
+  // where the same thread (by memory address) gets created and destroyed
+  // repeatedly.
+  ABSL_CONST_INIT static std::atomic<uint32_t> global_rand(0);
+  uint64_t r = reinterpret_cast<uint64_t>(this) +
+               global_rand.fetch_add(1, std::memory_order_relaxed);
+  for (int i = 0; i < 20; ++i) {
+    r = NextRandom(r);
+  }
+  rng_ = r;
+  initialized_ = true;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.h b/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.h
new file mode 100644
index 0000000..94f79a3
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/exponential_biased.h	
@@ -0,0 +1,130 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_EXPONENTIAL_BIASED_H_
+#define ABSL_BASE_INTERNAL_EXPONENTIAL_BIASED_H_
+
+#include <stdint.h>
+
+#include "absl/base/config.h"
+#include "absl/base/macros.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// ExponentialBiased provides a small and fast random number generator for a
+// rounded exponential distribution. This generator manages very little state,
+// and imposes no synchronization overhead. This makes it useful in specialized
+// scenarios requiring minimum overhead, such as stride based periodic sampling.
+//
+// ExponentialBiased provides two closely related functions, GetSkipCount() and
+// GetStride(), both returning a rounded integer defining a number of events
+// required before some event with a given mean probability occurs.
+//
+// The distribution is useful to generate a random wait time or some periodic
+// event with a given mean probability. For example, if an action is supposed to
+// happen on average once every 'N' events, then we can get a random 'stride'
+// counting down how long before the event to happen. For example, if we'd want
+// to sample one in every 1000 'Frobber' calls, our code could look like this:
+//
+//   Frobber::Frobber() {
+//     stride_ = exponential_biased_.GetStride(1000);
+//   }
+//
+//   void Frobber::Frob(int arg) {
+//     if (--stride == 0) {
+//       SampleFrob(arg);
+//       stride_ = exponential_biased_.GetStride(1000);
+//     }
+//     ...
+//   }
+//
+// The rounding of the return value creates a bias, especially for smaller means
+// where the distribution of the fraction is not evenly distributed. We correct
+// this bias by tracking the fraction we rounded up or down on each iteration,
+// effectively tracking the distance between the cumulative value, and the
+// rounded cumulative value. For example, given a mean of 2:
+//
+//   raw = 1.63076, cumulative = 1.63076, rounded = 2, bias = -0.36923
+//   raw = 0.14624, cumulative = 1.77701, rounded = 2, bias =  0.14624
+//   raw = 4.93194, cumulative = 6.70895, rounded = 7, bias = -0.06805
+//   raw = 0.24206, cumulative = 6.95101, rounded = 7, bias =  0.24206
+//   etc...
+//
+// Adjusting with rounding bias is relatively trivial:
+//
+//    double value = bias_ + exponential_distribution(mean)();
+//    double rounded_value = std::round(value);
+//    bias_ = value - rounded_value;
+//    return rounded_value;
+//
+// This class is thread-compatible.
+class ExponentialBiased {
+ public:
+  // The number of bits set by NextRandom.
+  static constexpr int kPrngNumBits = 48;
+
+  // `GetSkipCount()` returns the number of events to skip before some chosen
+  // event happens. For example, randomly tossing a coin, we will on average
+  // throw heads once before we get tails. We can simulate random coin tosses
+  // using GetSkipCount() as:
+  //
+  //   ExponentialBiased eb;
+  //   for (...) {
+  //     int number_of_heads_before_tail = eb.GetSkipCount(1);
+  //     for (int flips = 0; flips < number_of_heads_before_tail; ++flips) {
+  //       printf("head...");
+  //     }
+  //     printf("tail\n");
+  //   }
+  //
+  int64_t GetSkipCount(int64_t mean);
+
+  // GetStride() returns the number of events required for a specific event to
+  // happen. See the class comments for a usage example. `GetStride()` is
+  // equivalent to `GetSkipCount(mean - 1) + 1`. When to use `GetStride()` or
+  // `GetSkipCount()` depends mostly on what best fits the use case.
+  int64_t GetStride(int64_t mean);
+
+  // Computes a random number in the range [0, 1<<(kPrngNumBits+1) - 1]
+  //
+  // This is public to enable testing.
+  static uint64_t NextRandom(uint64_t rnd);
+
+ private:
+  void Initialize();
+
+  uint64_t rng_{0};
+  double bias_{0};
+  bool initialized_{false};
+};
+
+// Returns the next prng value.
+// pRNG is: aX+b mod c with a = 0x5DEECE66D, b =  0xB, c = 1<<48
+// This is the lrand64 generator.
+inline uint64_t ExponentialBiased::NextRandom(uint64_t rnd) {
+  const uint64_t prng_mult = uint64_t{0x5DEECE66D};
+  const uint64_t prng_add = 0xB;
+  const uint64_t prng_mod_power = 48;
+  const uint64_t prng_mod_mask =
+      ~((~static_cast<uint64_t>(0)) << prng_mod_power);
+  return (prng_mult * rnd + prng_add) & prng_mod_mask;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_EXPONENTIAL_BIASED_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/hide_ptr.h b/ChattingApp 000/Pods/abseil/absl/base/internal/hide_ptr.h
new file mode 100644
index 0000000..1dba809
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/hide_ptr.h	
@@ -0,0 +1,51 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_HIDE_PTR_H_
+#define ABSL_BASE_INTERNAL_HIDE_PTR_H_
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Arbitrary value with high bits set. Xor'ing with it is unlikely
+// to map one valid pointer to another valid pointer.
+constexpr uintptr_t HideMask() {
+  return (uintptr_t{0xF03A5F7BU} << (sizeof(uintptr_t) - 4) * 8) | 0xF03A5F7BU;
+}
+
+// Hide a pointer from the leak checker. For internal use only.
+// Differs from absl::IgnoreLeak(ptr) in that absl::IgnoreLeak(ptr) causes ptr
+// and all objects reachable from ptr to be ignored by the leak checker.
+template <class T>
+inline uintptr_t HidePtr(T* ptr) {
+  return reinterpret_cast<uintptr_t>(ptr) ^ HideMask();
+}
+
+// Return a pointer that has been hidden from the leak checker.
+// For internal use only.
+template <class T>
+inline T* UnhidePtr(uintptr_t hidden) {
+  return reinterpret_cast<T*>(hidden ^ HideMask());
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_HIDE_PTR_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/identity.h b/ChattingApp 000/Pods/abseil/absl/base/internal/identity.h
new file mode 100644
index 0000000..a3154ed
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/identity.h	
@@ -0,0 +1,37 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_IDENTITY_H_
+#define ABSL_BASE_INTERNAL_IDENTITY_H_
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace internal {
+
+template <typename T>
+struct identity {
+  typedef T type;
+};
+
+template <typename T>
+using identity_t = typename identity<T>::type;
+
+}  // namespace internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_IDENTITY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/inline_variable.h b/ChattingApp 000/Pods/abseil/absl/base/internal/inline_variable.h
new file mode 100644
index 0000000..130d8c2
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/inline_variable.h	
@@ -0,0 +1,107 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
+#define ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
+
+#include <type_traits>
+
+#include "absl/base/internal/identity.h"
+
+// File:
+//   This file define a macro that allows the creation of or emulation of C++17
+//   inline variables based on whether or not the feature is supported.
+
+////////////////////////////////////////////////////////////////////////////////
+// Macro: ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init)
+//
+// Description:
+//   Expands to the equivalent of an inline constexpr instance of the specified
+//   `type` and `name`, initialized to the value `init`. If the compiler being
+//   used is detected as supporting actual inline variables as a language
+//   feature, then the macro expands to an actual inline variable definition.
+//
+// Requires:
+//   `type` is a type that is usable in an extern variable declaration.
+//
+// Requires: `name` is a valid identifier
+//
+// Requires:
+//   `init` is an expression that can be used in the following definition:
+//     constexpr type name = init;
+//
+// Usage:
+//
+//   // Equivalent to: `inline constexpr size_t variant_npos = -1;`
+//   ABSL_INTERNAL_INLINE_CONSTEXPR(size_t, variant_npos, -1);
+//
+// Differences in implementation:
+//   For a direct, language-level inline variable, decltype(name) will be the
+//   type that was specified along with const qualification, whereas for
+//   emulated inline variables, decltype(name) may be different (in practice
+//   it will likely be a reference type).
+////////////////////////////////////////////////////////////////////////////////
+
+#ifdef __cpp_inline_variables
+
+// Clang's -Wmissing-variable-declarations option erroneously warned that
+// inline constexpr objects need to be pre-declared. This has now been fixed,
+// but we will need to support this workaround for people building with older
+// versions of clang.
+//
+// Bug: https://bugs.llvm.org/show_bug.cgi?id=35862
+//
+// Note:
+//   identity_t is used here so that the const and name are in the
+//   appropriate place for pointer types, reference types, function pointer
+//   types, etc..
+#if defined(__clang__)
+#define ABSL_INTERNAL_EXTERN_DECL(type, name) \
+  extern const ::absl::internal::identity_t<type> name;
+#else  // Otherwise, just define the macro to do nothing.
+#define ABSL_INTERNAL_EXTERN_DECL(type, name)
+#endif  // defined(__clang__)
+
+// See above comment at top of file for details.
+#define ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init) \
+  ABSL_INTERNAL_EXTERN_DECL(type, name)                  \
+  inline constexpr ::absl::internal::identity_t<type> name = init
+
+#else
+
+// See above comment at top of file for details.
+//
+// Note:
+//   identity_t is used here so that the const and name are in the
+//   appropriate place for pointer types, reference types, function pointer
+//   types, etc..
+#define ABSL_INTERNAL_INLINE_CONSTEXPR(var_type, name, init)                  \
+  template <class /*AbslInternalDummy*/ = void>                               \
+  struct AbslInternalInlineVariableHolder##name {                             \
+    static constexpr ::absl::internal::identity_t<var_type> kInstance = init; \
+  };                                                                          \
+                                                                              \
+  template <class AbslInternalDummy>                                          \
+  constexpr ::absl::internal::identity_t<var_type>                            \
+      AbslInternalInlineVariableHolder##name<AbslInternalDummy>::kInstance;   \
+                                                                              \
+  static constexpr const ::absl::internal::identity_t<var_type>&              \
+      name = /* NOLINT */                                                     \
+      AbslInternalInlineVariableHolder##name<>::kInstance;                    \
+  static_assert(sizeof(void (*)(decltype(name))) != 0,                        \
+                "Silence unused variable warnings.")
+
+#endif  // __cpp_inline_variables
+
+#endif  // ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/invoke.h b/ChattingApp 000/Pods/abseil/absl/base/internal/invoke.h
new file mode 100644
index 0000000..c4eceeb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/invoke.h	
@@ -0,0 +1,187 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// absl::base_internal::Invoke(f, args...) is an implementation of
+// INVOKE(f, args...) from section [func.require] of the C++ standard.
+//
+// [func.require]
+// Define INVOKE (f, t1, t2, ..., tN) as follows:
+// 1. (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T
+//    and t1 is an object of type T or a reference to an object of type T or a
+//    reference to an object of a type derived from T;
+// 2. ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a
+//    class T and t1 is not one of the types described in the previous item;
+// 3. t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is
+//    an object of type T or a reference to an object of type T or a reference
+//    to an object of a type derived from T;
+// 4. (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1
+//    is not one of the types described in the previous item;
+// 5. f(t1, t2, ..., tN) in all other cases.
+//
+// The implementation is SFINAE-friendly: substitution failure within Invoke()
+// isn't an error.
+
+#ifndef ABSL_BASE_INTERNAL_INVOKE_H_
+#define ABSL_BASE_INTERNAL_INVOKE_H_
+
+#include <algorithm>
+#include <type_traits>
+#include <utility>
+
+#include "absl/meta/type_traits.h"
+
+// The following code is internal implementation detail.  See the comment at the
+// top of this file for the API documentation.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// The five classes below each implement one of the clauses from the definition
+// of INVOKE. The inner class template Accept<F, Args...> checks whether the
+// clause is applicable; static function template Invoke(f, args...) does the
+// invocation.
+//
+// By separating the clause selection logic from invocation we make sure that
+// Invoke() does exactly what the standard says.
+
+template <typename Derived>
+struct StrippedAccept {
+  template <typename... Args>
+  struct Accept : Derived::template AcceptImpl<typename std::remove_cv<
+                      typename std::remove_reference<Args>::type>::type...> {};
+};
+
+// (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T
+// and t1 is an object of type T or a reference to an object of type T or a
+// reference to an object of a type derived from T.
+struct MemFunAndRef : StrippedAccept<MemFunAndRef> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename MemFunType, typename C, typename Obj, typename... Args>
+  struct AcceptImpl<MemFunType C::*, Obj, Args...>
+      : std::integral_constant<bool, std::is_base_of<C, Obj>::value &&
+                                         absl::is_function<MemFunType>::value> {
+  };
+
+  template <typename MemFun, typename Obj, typename... Args>
+  static decltype((std::declval<Obj>().*
+                   std::declval<MemFun>())(std::declval<Args>()...))
+  Invoke(MemFun&& mem_fun, Obj&& obj, Args&&... args) {
+    return (std::forward<Obj>(obj).*
+            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...);
+  }
+};
+
+// ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a
+// class T and t1 is not one of the types described in the previous item.
+struct MemFunAndPtr : StrippedAccept<MemFunAndPtr> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename MemFunType, typename C, typename Ptr, typename... Args>
+  struct AcceptImpl<MemFunType C::*, Ptr, Args...>
+      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value &&
+                                         absl::is_function<MemFunType>::value> {
+  };
+
+  template <typename MemFun, typename Ptr, typename... Args>
+  static decltype(((*std::declval<Ptr>()).*
+                   std::declval<MemFun>())(std::declval<Args>()...))
+  Invoke(MemFun&& mem_fun, Ptr&& ptr, Args&&... args) {
+    return ((*std::forward<Ptr>(ptr)).*
+            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...);
+  }
+};
+
+// t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is
+// an object of type T or a reference to an object of type T or a reference
+// to an object of a type derived from T.
+struct DataMemAndRef : StrippedAccept<DataMemAndRef> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename R, typename C, typename Obj>
+  struct AcceptImpl<R C::*, Obj>
+      : std::integral_constant<bool, std::is_base_of<C, Obj>::value &&
+                                         !absl::is_function<R>::value> {};
+
+  template <typename DataMem, typename Ref>
+  static decltype(std::declval<Ref>().*std::declval<DataMem>()) Invoke(
+      DataMem&& data_mem, Ref&& ref) {
+    return std::forward<Ref>(ref).*std::forward<DataMem>(data_mem);
+  }
+};
+
+// (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1
+// is not one of the types described in the previous item.
+struct DataMemAndPtr : StrippedAccept<DataMemAndPtr> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename R, typename C, typename Ptr>
+  struct AcceptImpl<R C::*, Ptr>
+      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value &&
+                                         !absl::is_function<R>::value> {};
+
+  template <typename DataMem, typename Ptr>
+  static decltype((*std::declval<Ptr>()).*std::declval<DataMem>()) Invoke(
+      DataMem&& data_mem, Ptr&& ptr) {
+    return (*std::forward<Ptr>(ptr)).*std::forward<DataMem>(data_mem);
+  }
+};
+
+// f(t1, t2, ..., tN) in all other cases.
+struct Callable {
+  // Callable doesn't have Accept because it's the last clause that gets picked
+  // when none of the previous clauses are applicable.
+  template <typename F, typename... Args>
+  static decltype(std::declval<F>()(std::declval<Args>()...)) Invoke(
+      F&& f, Args&&... args) {
+    return std::forward<F>(f)(std::forward<Args>(args)...);
+  }
+};
+
+// Resolves to the first matching clause.
+template <typename... Args>
+struct Invoker {
+  typedef typename std::conditional<
+      MemFunAndRef::Accept<Args...>::value, MemFunAndRef,
+      typename std::conditional<
+          MemFunAndPtr::Accept<Args...>::value, MemFunAndPtr,
+          typename std::conditional<
+              DataMemAndRef::Accept<Args...>::value, DataMemAndRef,
+              typename std::conditional<DataMemAndPtr::Accept<Args...>::value,
+                                        DataMemAndPtr, Callable>::type>::type>::
+          type>::type type;
+};
+
+// The result type of Invoke<F, Args...>.
+template <typename F, typename... Args>
+using InvokeT = decltype(Invoker<F, Args...>::type::Invoke(
+    std::declval<F>(), std::declval<Args>()...));
+
+// Invoke(f, args...) is an implementation of INVOKE(f, args...) from section
+// [func.require] of the C++ standard.
+template <typename F, typename... Args>
+InvokeT<F, Args...> Invoke(F&& f, Args&&... args) {
+  return Invoker<F, Args...>::type::Invoke(std::forward<F>(f),
+                                           std::forward<Args>(args)...);
+}
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_INVOKE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.cc
new file mode 100644
index 0000000..1bf9443
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.cc	
@@ -0,0 +1,620 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A low-level allocator that can be used by other low-level
+// modules without introducing dependency cycles.
+// This allocator is slow and wasteful of memory;
+// it should not be used when performance is key.
+
+#include "absl/base/internal/low_level_alloc.h"
+
+#include <type_traits>
+
+#include "absl/base/call_once.h"
+#include "absl/base/config.h"
+#include "absl/base/internal/direct_mmap.h"
+#include "absl/base/internal/scheduling_mode.h"
+#include "absl/base/macros.h"
+#include "absl/base/thread_annotations.h"
+
+// LowLevelAlloc requires that the platform support low-level
+// allocation of virtual memory. Platforms lacking this cannot use
+// LowLevelAlloc.
+#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING
+
+#ifndef _WIN32
+#include <pthread.h>
+#include <signal.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#else
+#include <windows.h>
+#endif
+
+#include <string.h>
+#include <algorithm>
+#include <atomic>
+#include <cerrno>
+#include <cstddef>
+#include <new>                   // for placement-new
+
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+
+// MAP_ANONYMOUS
+#if defined(__APPLE__)
+// For mmap, Linux defines both MAP_ANONYMOUS and MAP_ANON and says MAP_ANON is
+// deprecated. In Darwin, MAP_ANON is all there is.
+#if !defined MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif  // !MAP_ANONYMOUS
+#endif  // __APPLE__
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// A first-fit allocator with amortized logarithmic free() time.
+
+// ---------------------------------------------------------------------------
+static const int kMaxLevel = 30;
+
+namespace {
+// This struct describes one allocated block, or one free block.
+struct AllocList {
+  struct Header {
+    // Size of entire region, including this field. Must be
+    // first. Valid in both allocated and unallocated blocks.
+    uintptr_t size;
+
+    // kMagicAllocated or kMagicUnallocated xor this.
+    uintptr_t magic;
+
+    // Pointer to parent arena.
+    LowLevelAlloc::Arena *arena;
+
+    // Aligns regions to 0 mod 2*sizeof(void*).
+    void *dummy_for_alignment;
+  } header;
+
+  // Next two fields: in unallocated blocks: freelist skiplist data
+  //                  in allocated blocks: overlaps with client data
+
+  // Levels in skiplist used.
+  int levels;
+
+  // Actually has levels elements. The AllocList node may not have room
+  // for all kMaxLevel entries. See max_fit in LLA_SkiplistLevels().
+  AllocList *next[kMaxLevel];
+};
+}  // namespace
+
+// ---------------------------------------------------------------------------
+// A trivial skiplist implementation.  This is used to keep the freelist
+// in address order while taking only logarithmic time per insert and delete.
+
+// An integer approximation of log2(size/base)
+// Requires size >= base.
+static int IntLog2(size_t size, size_t base) {
+  int result = 0;
+  for (size_t i = size; i > base; i >>= 1) {  // i == floor(size/2**result)
+    result++;
+  }
+  //    floor(size / 2**result) <= base < floor(size / 2**(result-1))
+  // =>     log2(size/(base+1)) <= result < 1+log2(size/base)
+  // => result ~= log2(size/base)
+  return result;
+}
+
+// Return a random integer n:  p(n)=1/(2**n) if 1 <= n; p(n)=0 if n < 1.
+static int Random(uint32_t *state) {
+  uint32_t r = *state;
+  int result = 1;
+  while ((((r = r*1103515245 + 12345) >> 30) & 1) == 0) {
+    result++;
+  }
+  *state = r;
+  return result;
+}
+
+// Return a number of skiplist levels for a node of size bytes, where
+// base is the minimum node size.  Compute level=log2(size / base)+n
+// where n is 1 if random is false and otherwise a random number generated with
+// the standard distribution for a skiplist:  See Random() above.
+// Bigger nodes tend to have more skiplist levels due to the log2(size / base)
+// term, so first-fit searches touch fewer nodes.  "level" is clipped so
+// level<kMaxLevel and next[level-1] will fit in the node.
+// 0 < LLA_SkiplistLevels(x,y,false) <= LLA_SkiplistLevels(x,y,true) < kMaxLevel
+static int LLA_SkiplistLevels(size_t size, size_t base, uint32_t *random) {
+  // max_fit is the maximum number of levels that will fit in a node for the
+  // given size.   We can't return more than max_fit, no matter what the
+  // random number generator says.
+  size_t max_fit = (size - offsetof(AllocList, next)) / sizeof(AllocList *);
+  int level = IntLog2(size, base) + (random != nullptr ? Random(random) : 1);
+  if (static_cast<size_t>(level) > max_fit) level = static_cast<int>(max_fit);
+  if (level > kMaxLevel-1) level = kMaxLevel - 1;
+  ABSL_RAW_CHECK(level >= 1, "block not big enough for even one level");
+  return level;
+}
+
+// Return "atleast", the first element of AllocList *head s.t. *atleast >= *e.
+// For 0 <= i < head->levels, set prev[i] to "no_greater", where no_greater
+// points to the last element at level i in the AllocList less than *e, or is
+// head if no such element exists.
+static AllocList *LLA_SkiplistSearch(AllocList *head,
+                                     AllocList *e, AllocList **prev) {
+  AllocList *p = head;
+  for (int level = head->levels - 1; level >= 0; level--) {
+    for (AllocList *n; (n = p->next[level]) != nullptr && n < e; p = n) {
+    }
+    prev[level] = p;
+  }
+  return (head->levels == 0) ? nullptr : prev[0]->next[0];
+}
+
+// Insert element *e into AllocList *head.  Set prev[] as LLA_SkiplistSearch.
+// Requires that e->levels be previously set by the caller (using
+// LLA_SkiplistLevels())
+static void LLA_SkiplistInsert(AllocList *head, AllocList *e,
+                               AllocList **prev) {
+  LLA_SkiplistSearch(head, e, prev);
+  for (; head->levels < e->levels; head->levels++) {  // extend prev pointers
+    prev[head->levels] = head;                        // to all *e's levels
+  }
+  for (int i = 0; i != e->levels; i++) {  // add element to list
+    e->next[i] = prev[i]->next[i];
+    prev[i]->next[i] = e;
+  }
+}
+
+// Remove element *e from AllocList *head.  Set prev[] as LLA_SkiplistSearch().
+// Requires that e->levels be previous set by the caller (using
+// LLA_SkiplistLevels())
+static void LLA_SkiplistDelete(AllocList *head, AllocList *e,
+                               AllocList **prev) {
+  AllocList *found = LLA_SkiplistSearch(head, e, prev);
+  ABSL_RAW_CHECK(e == found, "element not in freelist");
+  for (int i = 0; i != e->levels && prev[i]->next[i] == e; i++) {
+    prev[i]->next[i] = e->next[i];
+  }
+  while (head->levels > 0 && head->next[head->levels - 1] == nullptr) {
+    head->levels--;   // reduce head->levels if level unused
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Arena implementation
+
+// Metadata for an LowLevelAlloc arena instance.
+struct LowLevelAlloc::Arena {
+  // Constructs an arena with the given LowLevelAlloc flags.
+  explicit Arena(uint32_t flags_value);
+
+  base_internal::SpinLock mu;
+  // Head of free list, sorted by address
+  AllocList freelist ABSL_GUARDED_BY(mu);
+  // Count of allocated blocks
+  int32_t allocation_count ABSL_GUARDED_BY(mu);
+  // flags passed to NewArena
+  const uint32_t flags;
+  // Result of sysconf(_SC_PAGESIZE)
+  const size_t pagesize;
+  // Lowest power of two >= max(16, sizeof(AllocList))
+  const size_t round_up;
+  // Smallest allocation block size
+  const size_t min_size;
+  // PRNG state
+  uint32_t random ABSL_GUARDED_BY(mu);
+};
+
+namespace {
+// Static storage space for the lazily-constructed, default global arena
+// instances.  We require this space because the whole point of LowLevelAlloc
+// is to avoid relying on malloc/new.
+alignas(LowLevelAlloc::Arena) unsigned char default_arena_storage[sizeof(
+    LowLevelAlloc::Arena)];
+alignas(LowLevelAlloc::Arena) unsigned char unhooked_arena_storage[sizeof(
+    LowLevelAlloc::Arena)];
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+alignas(
+    LowLevelAlloc::Arena) unsigned char unhooked_async_sig_safe_arena_storage
+    [sizeof(LowLevelAlloc::Arena)];
+#endif
+
+// We must use LowLevelCallOnce here to construct the global arenas, rather than
+// using function-level statics, to avoid recursively invoking the scheduler.
+absl::once_flag create_globals_once;
+
+void CreateGlobalArenas() {
+  new (&default_arena_storage)
+      LowLevelAlloc::Arena(LowLevelAlloc::kCallMallocHook);
+  new (&unhooked_arena_storage) LowLevelAlloc::Arena(0);
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  new (&unhooked_async_sig_safe_arena_storage)
+      LowLevelAlloc::Arena(LowLevelAlloc::kAsyncSignalSafe);
+#endif
+}
+
+// Returns a global arena that does not call into hooks.  Used by NewArena()
+// when kCallMallocHook is not set.
+LowLevelAlloc::Arena* UnhookedArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena*>(&unhooked_arena_storage);
+}
+
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+// Returns a global arena that is async-signal safe.  Used by NewArena() when
+// kAsyncSignalSafe is set.
+LowLevelAlloc::Arena *UnhookedAsyncSigSafeArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena *>(
+      &unhooked_async_sig_safe_arena_storage);
+}
+#endif
+
+}  // namespace
+
+// Returns the default arena, as used by LowLevelAlloc::Alloc() and friends.
+LowLevelAlloc::Arena *LowLevelAlloc::DefaultArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena*>(&default_arena_storage);
+}
+
+// magic numbers to identify allocated and unallocated blocks
+static const uintptr_t kMagicAllocated = 0x4c833e95U;
+static const uintptr_t kMagicUnallocated = ~kMagicAllocated;
+
+namespace {
+class ABSL_SCOPED_LOCKABLE ArenaLock {
+ public:
+  explicit ArenaLock(LowLevelAlloc::Arena *arena)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION(arena->mu)
+      : arena_(arena) {
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+      sigset_t all;
+      sigfillset(&all);
+      mask_valid_ = pthread_sigmask(SIG_BLOCK, &all, &mask_) == 0;
+    }
+#endif
+    arena_->mu.Lock();
+  }
+  ~ArenaLock() { ABSL_RAW_CHECK(left_, "haven't left Arena region"); }
+  void Leave() ABSL_UNLOCK_FUNCTION() {
+    arena_->mu.Unlock();
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if (mask_valid_) {
+      const int err = pthread_sigmask(SIG_SETMASK, &mask_, nullptr);
+      if (err != 0) {
+        ABSL_RAW_LOG(FATAL, "pthread_sigmask failed: %d", err);
+      }
+    }
+#endif
+    left_ = true;
+  }
+
+ private:
+  bool left_ = false;  // whether left region
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  bool mask_valid_ = false;
+  sigset_t mask_;  // old mask of blocked signals
+#endif
+  LowLevelAlloc::Arena *arena_;
+  ArenaLock(const ArenaLock &) = delete;
+  ArenaLock &operator=(const ArenaLock &) = delete;
+};
+}  // namespace
+
+// create an appropriate magic number for an object at "ptr"
+// "magic" should be kMagicAllocated or kMagicUnallocated
+inline static uintptr_t Magic(uintptr_t magic, AllocList::Header *ptr) {
+  return magic ^ reinterpret_cast<uintptr_t>(ptr);
+}
+
+namespace {
+size_t GetPageSize() {
+#ifdef _WIN32
+  SYSTEM_INFO system_info;
+  GetSystemInfo(&system_info);
+  return std::max(system_info.dwPageSize, system_info.dwAllocationGranularity);
+#elif defined(__wasm__) || defined(__asmjs__)
+  return getpagesize();
+#else
+  return sysconf(_SC_PAGESIZE);
+#endif
+}
+
+size_t RoundedUpBlockSize() {
+  // Round up block sizes to a power of two close to the header size.
+  size_t round_up = 16;
+  while (round_up < sizeof(AllocList::Header)) {
+    round_up += round_up;
+  }
+  return round_up;
+}
+
+}  // namespace
+
+LowLevelAlloc::Arena::Arena(uint32_t flags_value)
+    : mu(base_internal::SCHEDULE_KERNEL_ONLY),
+      allocation_count(0),
+      flags(flags_value),
+      pagesize(GetPageSize()),
+      round_up(RoundedUpBlockSize()),
+      min_size(2 * round_up),
+      random(0) {
+  freelist.header.size = 0;
+  freelist.header.magic =
+      Magic(kMagicUnallocated, &freelist.header);
+  freelist.header.arena = this;
+  freelist.levels = 0;
+  memset(freelist.next, 0, sizeof(freelist.next));
+}
+
+// L < meta_data_arena->mu
+LowLevelAlloc::Arena *LowLevelAlloc::NewArena(int32_t flags) {
+  Arena *meta_data_arena = DefaultArena();
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  if ((flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+    meta_data_arena = UnhookedAsyncSigSafeArena();
+  } else  // NOLINT(readability/braces)
+#endif
+      if ((flags & LowLevelAlloc::kCallMallocHook) == 0) {
+    meta_data_arena = UnhookedArena();
+  }
+  Arena *result =
+    new (AllocWithArena(sizeof (*result), meta_data_arena)) Arena(flags);
+  return result;
+}
+
+// L < arena->mu, L < arena->arena->mu
+bool LowLevelAlloc::DeleteArena(Arena *arena) {
+  ABSL_RAW_CHECK(
+      arena != nullptr && arena != DefaultArena() && arena != UnhookedArena(),
+      "may not delete default arena");
+  ArenaLock section(arena);
+  if (arena->allocation_count != 0) {
+    section.Leave();
+    return false;
+  }
+  while (arena->freelist.next[0] != nullptr) {
+    AllocList *region = arena->freelist.next[0];
+    size_t size = region->header.size;
+    arena->freelist.next[0] = region->next[0];
+    ABSL_RAW_CHECK(
+        region->header.magic == Magic(kMagicUnallocated, &region->header),
+        "bad magic number in DeleteArena()");
+    ABSL_RAW_CHECK(region->header.arena == arena,
+                   "bad arena pointer in DeleteArena()");
+    ABSL_RAW_CHECK(size % arena->pagesize == 0,
+                   "empty arena has non-page-aligned block size");
+    ABSL_RAW_CHECK(reinterpret_cast<uintptr_t>(region) % arena->pagesize == 0,
+                   "empty arena has non-page-aligned block");
+    int munmap_result;
+#ifdef _WIN32
+    munmap_result = VirtualFree(region, 0, MEM_RELEASE);
+    ABSL_RAW_CHECK(munmap_result != 0,
+                   "LowLevelAlloc::DeleteArena: VitualFree failed");
+#else
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) == 0) {
+      munmap_result = munmap(region, size);
+    } else {
+      munmap_result = base_internal::DirectMunmap(region, size);
+    }
+#else
+    munmap_result = munmap(region, size);
+#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if (munmap_result != 0) {
+      ABSL_RAW_LOG(FATAL, "LowLevelAlloc::DeleteArena: munmap failed: %d",
+                   errno);
+    }
+#endif  // _WIN32
+  }
+  section.Leave();
+  arena->~Arena();
+  Free(arena);
+  return true;
+}
+
+// ---------------------------------------------------------------------------
+
+// Addition, checking for overflow.  The intent is to die if an external client
+// manages to push through a request that would cause arithmetic to fail.
+static inline uintptr_t CheckedAdd(uintptr_t a, uintptr_t b) {
+  uintptr_t sum = a + b;
+  ABSL_RAW_CHECK(sum >= a, "LowLevelAlloc arithmetic overflow");
+  return sum;
+}
+
+// Return value rounded up to next multiple of align.
+// align must be a power of two.
+static inline uintptr_t RoundUp(uintptr_t addr, uintptr_t align) {
+  return CheckedAdd(addr, align - 1) & ~(align - 1);
+}
+
+// Equivalent to "return prev->next[i]" but with sanity checking
+// that the freelist is in the correct order, that it
+// consists of regions marked "unallocated", and that no two regions
+// are adjacent in memory (they should have been coalesced).
+// L >= arena->mu
+static AllocList *Next(int i, AllocList *prev, LowLevelAlloc::Arena *arena) {
+  ABSL_RAW_CHECK(i < prev->levels, "too few levels in Next()");
+  AllocList *next = prev->next[i];
+  if (next != nullptr) {
+    ABSL_RAW_CHECK(
+        next->header.magic == Magic(kMagicUnallocated, &next->header),
+        "bad magic number in Next()");
+    ABSL_RAW_CHECK(next->header.arena == arena, "bad arena pointer in Next()");
+    if (prev != &arena->freelist) {
+      ABSL_RAW_CHECK(prev < next, "unordered freelist");
+      ABSL_RAW_CHECK(reinterpret_cast<char *>(prev) + prev->header.size <
+                         reinterpret_cast<char *>(next),
+                     "malformed freelist");
+    }
+  }
+  return next;
+}
+
+// Coalesce list item "a" with its successor if they are adjacent.
+static void Coalesce(AllocList *a) {
+  AllocList *n = a->next[0];
+  if (n != nullptr && reinterpret_cast<char *>(a) + a->header.size ==
+                          reinterpret_cast<char *>(n)) {
+    LowLevelAlloc::Arena *arena = a->header.arena;
+    a->header.size += n->header.size;
+    n->header.magic = 0;
+    n->header.arena = nullptr;
+    AllocList *prev[kMaxLevel];
+    LLA_SkiplistDelete(&arena->freelist, n, prev);
+    LLA_SkiplistDelete(&arena->freelist, a, prev);
+    a->levels = LLA_SkiplistLevels(a->header.size, arena->min_size,
+                                   &arena->random);
+    LLA_SkiplistInsert(&arena->freelist, a, prev);
+  }
+}
+
+// Adds block at location "v" to the free list
+// L >= arena->mu
+static void AddToFreelist(void *v, LowLevelAlloc::Arena *arena) {
+  AllocList *f = reinterpret_cast<AllocList *>(
+                        reinterpret_cast<char *>(v) - sizeof (f->header));
+  ABSL_RAW_CHECK(f->header.magic == Magic(kMagicAllocated, &f->header),
+                 "bad magic number in AddToFreelist()");
+  ABSL_RAW_CHECK(f->header.arena == arena,
+                 "bad arena pointer in AddToFreelist()");
+  f->levels = LLA_SkiplistLevels(f->header.size, arena->min_size,
+                                 &arena->random);
+  AllocList *prev[kMaxLevel];
+  LLA_SkiplistInsert(&arena->freelist, f, prev);
+  f->header.magic = Magic(kMagicUnallocated, &f->header);
+  Coalesce(f);                  // maybe coalesce with successor
+  Coalesce(prev[0]);            // maybe coalesce with predecessor
+}
+
+// Frees storage allocated by LowLevelAlloc::Alloc().
+// L < arena->mu
+void LowLevelAlloc::Free(void *v) {
+  if (v != nullptr) {
+    AllocList *f = reinterpret_cast<AllocList *>(
+                        reinterpret_cast<char *>(v) - sizeof (f->header));
+    LowLevelAlloc::Arena *arena = f->header.arena;
+    ArenaLock section(arena);
+    AddToFreelist(v, arena);
+    ABSL_RAW_CHECK(arena->allocation_count > 0, "nothing in arena to free");
+    arena->allocation_count--;
+    section.Leave();
+  }
+}
+
+// allocates and returns a block of size bytes, to be freed with Free()
+// L < arena->mu
+static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) {
+  void *result = nullptr;
+  if (request != 0) {
+    AllocList *s;       // will point to region that satisfies request
+    ArenaLock section(arena);
+    // round up with header
+    size_t req_rnd = RoundUp(CheckedAdd(request, sizeof (s->header)),
+                             arena->round_up);
+    for (;;) {      // loop until we find a suitable region
+      // find the minimum levels that a block of this size must have
+      int i = LLA_SkiplistLevels(req_rnd, arena->min_size, nullptr) - 1;
+      if (i < arena->freelist.levels) {   // potential blocks exist
+        AllocList *before = &arena->freelist;  // predecessor of s
+        while ((s = Next(i, before, arena)) != nullptr &&
+               s->header.size < req_rnd) {
+          before = s;
+        }
+        if (s != nullptr) {       // we found a region
+          break;
+        }
+      }
+      // we unlock before mmap() both because mmap() may call a callback hook,
+      // and because it may be slow.
+      arena->mu.Unlock();
+      // mmap generous 64K chunks to decrease
+      // the chances/impact of fragmentation:
+      size_t new_pages_size = RoundUp(req_rnd, arena->pagesize * 16);
+      void *new_pages;
+#ifdef _WIN32
+      new_pages = VirtualAlloc(0, new_pages_size,
+                               MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+      ABSL_RAW_CHECK(new_pages != nullptr, "VirtualAlloc failed");
+#else
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+      if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+        new_pages = base_internal::DirectMmap(nullptr, new_pages_size,
+            PROT_WRITE|PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+      } else {
+        new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ,
+                         MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+      }
+#else
+      new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ,
+                       MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+      if (new_pages == MAP_FAILED) {
+        ABSL_RAW_LOG(FATAL, "mmap error: %d", errno);
+      }
+
+#endif  // _WIN32
+      arena->mu.Lock();
+      s = reinterpret_cast<AllocList *>(new_pages);
+      s->header.size = new_pages_size;
+      // Pretend the block is allocated; call AddToFreelist() to free it.
+      s->header.magic = Magic(kMagicAllocated, &s->header);
+      s->header.arena = arena;
+      AddToFreelist(&s->levels, arena);  // insert new region into free list
+    }
+    AllocList *prev[kMaxLevel];
+    LLA_SkiplistDelete(&arena->freelist, s, prev);    // remove from free list
+    // s points to the first free region that's big enough
+    if (CheckedAdd(req_rnd, arena->min_size) <= s->header.size) {
+      // big enough to split
+      AllocList *n = reinterpret_cast<AllocList *>
+                        (req_rnd + reinterpret_cast<char *>(s));
+      n->header.size = s->header.size - req_rnd;
+      n->header.magic = Magic(kMagicAllocated, &n->header);
+      n->header.arena = arena;
+      s->header.size = req_rnd;
+      AddToFreelist(&n->levels, arena);
+    }
+    s->header.magic = Magic(kMagicAllocated, &s->header);
+    ABSL_RAW_CHECK(s->header.arena == arena, "");
+    arena->allocation_count++;
+    section.Leave();
+    result = &s->levels;
+  }
+  ANNOTATE_MEMORY_IS_UNINITIALIZED(result, request);
+  return result;
+}
+
+void *LowLevelAlloc::Alloc(size_t request) {
+  void *result = DoAllocWithArena(request, DefaultArena());
+  return result;
+}
+
+void *LowLevelAlloc::AllocWithArena(size_t request, Arena *arena) {
+  ABSL_RAW_CHECK(arena != nullptr, "must pass a valid arena");
+  void *result = DoAllocWithArena(request, arena);
+  return result;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.h b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.h
new file mode 100644
index 0000000..db91951
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_alloc.h	
@@ -0,0 +1,126 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
+#define ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
+
+// A simple thread-safe memory allocator that does not depend on
+// mutexes or thread-specific data.  It is intended to be used
+// sparingly, and only when malloc() would introduce an unwanted
+// dependency, such as inside the heap-checker, or the Mutex
+// implementation.
+
+// IWYU pragma: private, include "base/low_level_alloc.h"
+
+#include <sys/types.h>
+
+#include <cstdint>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+
+// LowLevelAlloc requires that the platform support low-level
+// allocation of virtual memory. Platforms lacking this cannot use
+// LowLevelAlloc.
+#ifdef ABSL_LOW_LEVEL_ALLOC_MISSING
+#error ABSL_LOW_LEVEL_ALLOC_MISSING cannot be directly set
+#elif !defined(ABSL_HAVE_MMAP) && !defined(_WIN32)
+#define ABSL_LOW_LEVEL_ALLOC_MISSING 1
+#endif
+
+// Using LowLevelAlloc with kAsyncSignalSafe isn't supported on Windows or
+// asm.js / WebAssembly.
+// See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html
+// for more information.
+#ifdef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+#error ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING cannot be directly set
+#elif defined(_WIN32) || defined(__asmjs__) || defined(__wasm__)
+#define ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 1
+#endif
+
+#include <cstddef>
+
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+class LowLevelAlloc {
+ public:
+  struct Arena;       // an arena from which memory may be allocated
+
+  // Returns a pointer to a block of at least "request" bytes
+  // that have been newly allocated from the specific arena.
+  // for Alloc() call the DefaultArena() is used.
+  // Returns 0 if passed request==0.
+  // Does not return 0 under other circumstances; it crashes if memory
+  // is not available.
+  static void *Alloc(size_t request) ABSL_ATTRIBUTE_SECTION(malloc_hook);
+  static void *AllocWithArena(size_t request, Arena *arena)
+      ABSL_ATTRIBUTE_SECTION(malloc_hook);
+
+  // Deallocates a region of memory that was previously allocated with
+  // Alloc().   Does nothing if passed 0.   "s" must be either 0,
+  // or must have been returned from a call to Alloc() and not yet passed to
+  // Free() since that call to Alloc().  The space is returned to the arena
+  // from which it was allocated.
+  static void Free(void *s) ABSL_ATTRIBUTE_SECTION(malloc_hook);
+
+  // ABSL_ATTRIBUTE_SECTION(malloc_hook) for Alloc* and Free
+  // are to put all callers of MallocHook::Invoke* in this module
+  // into special section,
+  // so that MallocHook::GetCallerStackTrace can function accurately.
+
+  // Create a new arena.
+  // The root metadata for the new arena is allocated in the
+  // meta_data_arena; the DefaultArena() can be passed for meta_data_arena.
+  // These values may be ored into flags:
+  enum {
+    // Report calls to Alloc() and Free() via the MallocHook interface.
+    // Set in the DefaultArena.
+    kCallMallocHook = 0x0001,
+
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    // Make calls to Alloc(), Free() be async-signal-safe. Not set in
+    // DefaultArena(). Not supported on all platforms.
+    kAsyncSignalSafe = 0x0002,
+#endif
+  };
+  // Construct a new arena.  The allocation of the underlying metadata honors
+  // the provided flags.  For example, the call NewArena(kAsyncSignalSafe)
+  // is itself async-signal-safe, as well as generatating an arena that provides
+  // async-signal-safe Alloc/Free.
+  static Arena *NewArena(int32_t flags);
+
+  // Destroys an arena allocated by NewArena and returns true,
+  // provided no allocated blocks remain in the arena.
+  // If allocated blocks remain in the arena, does nothing and
+  // returns false.
+  // It is illegal to attempt to destroy the DefaultArena().
+  static bool DeleteArena(Arena *arena);
+
+  // The default arena that always exists.
+  static Arena *DefaultArena();
+
+ private:
+  LowLevelAlloc();      // no instances
+};
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_scheduling.h b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_scheduling.h
new file mode 100644
index 0000000..961cc98
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/low_level_scheduling.h	
@@ -0,0 +1,107 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Core interfaces and definitions used by by low-level interfaces such as
+// SpinLock.
+
+#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
+#define ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
+
+#include "absl/base/internal/scheduling_mode.h"
+#include "absl/base/macros.h"
+
+// The following two declarations exist so SchedulingGuard may friend them with
+// the appropriate language linkage.  These callbacks allow libc internals, such
+// as function level statics, to schedule cooperatively when locking.
+extern "C" bool __google_disable_rescheduling(void);
+extern "C" void __google_enable_rescheduling(bool disable_result);
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+class SchedulingHelper;  // To allow use of SchedulingGuard.
+class SpinLock;          // To allow use of SchedulingGuard.
+
+// SchedulingGuard
+// Provides guard semantics that may be used to disable cooperative rescheduling
+// of the calling thread within specific program blocks.  This is used to
+// protect resources (e.g. low-level SpinLocks or Domain code) that cooperative
+// scheduling depends on.
+//
+// Domain implementations capable of rescheduling in reaction to involuntary
+// kernel thread actions (e.g blocking due to a pagefault or syscall) must
+// guarantee that an annotated thread is not allowed to (cooperatively)
+// reschedule until the annotated region is complete.
+//
+// It is an error to attempt to use a cooperatively scheduled resource (e.g.
+// Mutex) within a rescheduling-disabled region.
+//
+// All methods are async-signal safe.
+class SchedulingGuard {
+ public:
+  // Returns true iff the calling thread may be cooperatively rescheduled.
+  static bool ReschedulingIsAllowed();
+
+ private:
+  // Disable cooperative rescheduling of the calling thread.  It may still
+  // initiate scheduling operations (e.g. wake-ups), however, it may not itself
+  // reschedule.  Nestable.  The returned result is opaque, clients should not
+  // attempt to interpret it.
+  // REQUIRES: Result must be passed to a pairing EnableScheduling().
+  static bool DisableRescheduling();
+
+  // Marks the end of a rescheduling disabled region, previously started by
+  // DisableRescheduling().
+  // REQUIRES: Pairs with innermost call (and result) of DisableRescheduling().
+  static void EnableRescheduling(bool disable_result);
+
+  // A scoped helper for {Disable, Enable}Rescheduling().
+  // REQUIRES: destructor must run in same thread as constructor.
+  struct ScopedDisable {
+    ScopedDisable() { disabled = SchedulingGuard::DisableRescheduling(); }
+    ~ScopedDisable() { SchedulingGuard::EnableRescheduling(disabled); }
+
+    bool disabled;
+  };
+
+  // Access to SchedulingGuard is explicitly white-listed.
+  friend class SchedulingHelper;
+  friend class SpinLock;
+
+  SchedulingGuard(const SchedulingGuard&) = delete;
+  SchedulingGuard& operator=(const SchedulingGuard&) = delete;
+};
+
+//------------------------------------------------------------------------------
+// End of public interfaces.
+//------------------------------------------------------------------------------
+
+inline bool SchedulingGuard::ReschedulingIsAllowed() {
+  return false;
+}
+
+inline bool SchedulingGuard::DisableRescheduling() {
+  return false;
+}
+
+inline void SchedulingGuard::EnableRescheduling(bool /* disable_result */) {
+  return;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/per_thread_tls.h b/ChattingApp 000/Pods/abseil/absl/base/internal/per_thread_tls.h
new file mode 100644
index 0000000..cf5e97a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/per_thread_tls.h	
@@ -0,0 +1,52 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
+#define ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
+
+// This header defines two macros:
+//
+// If the platform supports thread-local storage:
+//
+// * ABSL_PER_THREAD_TLS_KEYWORD is the C keyword needed to declare a
+//   thread-local variable
+// * ABSL_PER_THREAD_TLS is 1
+//
+// Otherwise:
+//
+// * ABSL_PER_THREAD_TLS_KEYWORD is empty
+// * ABSL_PER_THREAD_TLS is 0
+//
+// Microsoft C supports thread-local storage.
+// GCC supports it if the appropriate version of glibc is available,
+// which the programmer can indicate by defining ABSL_HAVE_TLS
+
+#include "absl/base/port.h"  // For ABSL_HAVE_TLS
+
+#if defined(ABSL_PER_THREAD_TLS)
+#error ABSL_PER_THREAD_TLS cannot be directly set
+#elif defined(ABSL_PER_THREAD_TLS_KEYWORD)
+#error ABSL_PER_THREAD_TLS_KEYWORD cannot be directly set
+#elif defined(ABSL_HAVE_TLS)
+#define ABSL_PER_THREAD_TLS_KEYWORD __thread
+#define ABSL_PER_THREAD_TLS 1
+#elif defined(_MSC_VER)
+#define ABSL_PER_THREAD_TLS_KEYWORD __declspec(thread)
+#define ABSL_PER_THREAD_TLS 1
+#else
+#define ABSL_PER_THREAD_TLS_KEYWORD
+#define ABSL_PER_THREAD_TLS 0
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.cc
new file mode 100644
index 0000000..520dabb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.cc	
@@ -0,0 +1,53 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/periodic_sampler.h"
+
+#include <atomic>
+
+#include "absl/base/internal/exponential_biased.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+int64_t PeriodicSamplerBase::GetExponentialBiased(int period) noexcept {
+  return rng_.GetStride(period);
+}
+
+bool PeriodicSamplerBase::SubtleConfirmSample() noexcept {
+  int current_period = period();
+
+  // Deal with period case 0 (always off) and 1 (always on)
+  if (ABSL_PREDICT_FALSE(current_period < 2)) {
+    stride_ = 0;
+    return current_period == 1;
+  }
+
+  // Check if this is the first call to Sample()
+  if (ABSL_PREDICT_FALSE(stride_ == 1)) {
+    stride_ = static_cast<uint64_t>(-GetExponentialBiased(current_period));
+    if (static_cast<int64_t>(stride_) < -1) {
+      ++stride_;
+      return false;
+    }
+  }
+
+  stride_ = static_cast<uint64_t>(-GetExponentialBiased(current_period));
+  return true;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.h b/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.h
new file mode 100644
index 0000000..f8a8679
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/periodic_sampler.h	
@@ -0,0 +1,211 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_PERIODIC_SAMPLER_H_
+#define ABSL_BASE_INTERNAL_PERIODIC_SAMPLER_H_
+
+#include <stdint.h>
+
+#include <atomic>
+
+#include "absl/base/internal/exponential_biased.h"
+#include "absl/base/optimization.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// PeriodicSamplerBase provides the basic period sampler implementation.
+//
+// This is the base class for the templated PeriodicSampler class, which holds
+// a global std::atomic value identified by a user defined tag, such that
+// each specific PeriodSampler implementation holds its own global period.
+//
+// PeriodicSamplerBase is thread-compatible except where stated otherwise.
+class PeriodicSamplerBase {
+ public:
+  // PeriodicSamplerBase is trivial / copyable / movable / destructible.
+  PeriodicSamplerBase() = default;
+  PeriodicSamplerBase(PeriodicSamplerBase&&) = default;
+  PeriodicSamplerBase(const PeriodicSamplerBase&) = default;
+
+  // Returns true roughly once every `period` calls. This is established by a
+  // randomly picked `stride` that is counted down on each call to `Sample`.
+  // This stride is picked such that the probability of `Sample()` returning
+  // true is 1 in `period`.
+  inline bool Sample() noexcept;
+
+  // The below methods are intended for optimized use cases where the
+  // size of the inlined fast path code is highly important. Applications
+  // should use the `Sample()` method unless they have proof that their
+  // specific use case requires the optimizations offered by these methods.
+  //
+  // An example of such a use case is SwissTable sampling. All sampling checks
+  // are in inlined SwissTable methods, and the number of call sites is huge.
+  // In this case, the inlined code size added to each translation unit calling
+  // SwissTable methods is non-trivial.
+  //
+  // The `SubtleMaybeSample()` function spuriously returns true even if the
+  // function should not be sampled, applications MUST match each call to
+  // 'SubtleMaybeSample()' returning true with a `SubtleConfirmSample()` call,
+  // and use the result of the latter as the sampling decision.
+  // In other words: the code should logically be equivalent to:
+  //
+  //    if (SubtleMaybeSample() && SubtleConfirmSample()) {
+  //      // Sample this call
+  //    }
+  //
+  // In the 'inline-size' optimized case, the `SubtleConfirmSample()` call can
+  // be placed out of line, for example, the typical use case looks as follows:
+  //
+  //   // --- frobber.h -----------
+  //   void FrobberSampled();
+  //
+  //   inline void FrobberImpl() {
+  //     // ...
+  //   }
+  //
+  //   inline void Frobber() {
+  //     if (ABSL_PREDICT_FALSE(sampler.SubtleMaybeSample())) {
+  //       FrobberSampled();
+  //     } else {
+  //       FrobberImpl();
+  //     }
+  //   }
+  //
+  //   // --- frobber.cc -----------
+  //   void FrobberSampled() {
+  //     if (!sampler.SubtleConfirmSample())) {
+  //       // Spurious false positive
+  //       FrobberImpl();
+  //       return;
+  //     }
+  //
+  //     // Sampled execution
+  //     // ...
+  //   }
+  inline bool SubtleMaybeSample() noexcept;
+  bool SubtleConfirmSample() noexcept;
+
+ protected:
+  // We explicitly don't use a virtual destructor as this class is never
+  // virtually destroyed, and it keeps the class trivial, which avoids TLS
+  // prologue and epilogue code for our TLS instances.
+  ~PeriodicSamplerBase() = default;
+
+  // Returns the next stride for our sampler.
+  // This function is virtual for testing purposes only.
+  virtual int64_t GetExponentialBiased(int period) noexcept;
+
+ private:
+  // Returns the current period of this sampler. Thread-safe.
+  virtual int period() const noexcept = 0;
+
+  // Keep and decrement stride_ as an unsigned integer, but compare the value
+  // to zero casted as a signed int. clang and msvc do not create optimum code
+  // if we use signed for the combined decrement and sign comparison.
+  //
+  // Below 3 alternative options, all compiles generate the best code
+  // using the unsigned increment <---> signed int comparison option.
+  //
+  // Option 1:
+  //   int64_t stride_;
+  //   if (ABSL_PREDICT_TRUE(++stride_ < 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/R5MzzA
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/z7NZAt
+  //   Clang x64 (BAD): https://gcc.godbolt.org/z/t4gPsd
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/rE6s8W
+  //   MSVC  x64 (OK) : https://gcc.godbolt.org/z/ARMXqS
+  //
+  // Option 2:
+  //   int64_t stride_ = 0;
+  //   if (ABSL_PREDICT_TRUE(--stride_ >= 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/jSQxYK
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/VJdYaA
+  //   Clang x64 (BAD): https://gcc.godbolt.org/z/Xm4NjX
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/4snaFd
+  //   MSVC  x64 (BAD): https://gcc.godbolt.org/z/BgnEKE
+  //
+  // Option 3:
+  //   uint64_t stride_;
+  //   if (ABSL_PREDICT_TRUE(static_cast<int64_t>(++stride_) < 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/bFbfPy
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/S9KkUE
+  //   Clang x64 (OK) : https://gcc.godbolt.org/z/UYzRb4
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/ptTNfD
+  //   MSVC  x64 (OK) : https://gcc.godbolt.org/z/76j4-5
+  uint64_t stride_ = 0;
+  ExponentialBiased rng_;
+};
+
+inline bool PeriodicSamplerBase::SubtleMaybeSample() noexcept {
+  // See comments on `stride_` for the unsigned increment / signed compare.
+  if (ABSL_PREDICT_TRUE(static_cast<int64_t>(++stride_) < 0)) {
+    return false;
+  }
+  return true;
+}
+
+inline bool PeriodicSamplerBase::Sample() noexcept {
+  return ABSL_PREDICT_FALSE(SubtleMaybeSample()) ? SubtleConfirmSample()
+                                                 : false;
+}
+
+// PeriodicSampler is a concreted periodic sampler implementation.
+// The user provided Tag identifies the implementation, and is required to
+// isolate the global state of this instance from other instances.
+//
+// Typical use case:
+//
+//   struct HashTablezTag {};
+//   thread_local PeriodicSampler sampler;
+//
+//   void HashTableSamplingLogic(...) {
+//     if (sampler.Sample()) {
+//       HashTableSlowSamplePath(...);
+//     }
+//   }
+//
+template <typename Tag, int default_period = 0>
+class PeriodicSampler final : public PeriodicSamplerBase {
+ public:
+  ~PeriodicSampler() = default;
+
+  int period() const noexcept final {
+    return period_.load(std::memory_order_relaxed);
+  }
+
+  // Sets the global period for this sampler. Thread-safe.
+  // Setting a period of 0 disables the sampler, i.e., every call to Sample()
+  // will return false. Setting a period of 1 puts the sampler in 'always on'
+  // mode, i.e., every call to Sample() returns true.
+  static void SetGlobalPeriod(int period) {
+    period_.store(period, std::memory_order_relaxed);
+  }
+
+ private:
+  static std::atomic<int> period_;
+};
+
+template <typename Tag, int default_period>
+std::atomic<int> PeriodicSampler<Tag, default_period>::period_(default_period);
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_PERIODIC_SAMPLER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/pretty_function.h b/ChattingApp 000/Pods/abseil/absl/base/internal/pretty_function.h
new file mode 100644
index 0000000..35d5167
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/pretty_function.h	
@@ -0,0 +1,33 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
+#define ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
+
+// ABSL_PRETTY_FUNCTION
+//
+// In C++11, __func__ gives the undecorated name of the current function.  That
+// is, "main", not "int main()".  Various compilers give extra macros to get the
+// decorated function name, including return type and arguments, to
+// differentiate between overload sets.  ABSL_PRETTY_FUNCTION is a portable
+// version of these macros which forwards to the correct macro on each compiler.
+#if defined(_MSC_VER)
+#define ABSL_PRETTY_FUNCTION __FUNCSIG__
+#elif defined(__GNUC__)
+#define ABSL_PRETTY_FUNCTION __PRETTY_FUNCTION__
+#else
+#error "Unsupported compiler"
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.cc
new file mode 100644
index 0000000..40cea55
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.cc	
@@ -0,0 +1,240 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/raw_logging.h"
+
+#include <stddef.h>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+#include "absl/base/internal/atomic_hook.h"
+#include "absl/base/log_severity.h"
+
+// We know how to perform low-level writes to stderr in POSIX and Windows.  For
+// these platforms, we define the token ABSL_LOW_LEVEL_WRITE_SUPPORTED.
+// Much of raw_logging.cc becomes a no-op when we can't output messages,
+// although a FATAL ABSL_RAW_LOG message will still abort the process.
+
+// ABSL_HAVE_POSIX_WRITE is defined when the platform provides posix write()
+// (as from unistd.h)
+//
+// This preprocessor token is also defined in raw_io.cc.  If you need to copy
+// this, consider moving both to config.h instead.
+#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \
+    defined(__Fuchsia__) || defined(__native_client__) || \
+    defined(__EMSCRIPTEN__) || defined(__ASYLO__)
+
+#include <unistd.h>
+
+#define ABSL_HAVE_POSIX_WRITE 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_POSIX_WRITE
+#endif
+
+// ABSL_HAVE_SYSCALL_WRITE is defined when the platform provides the syscall
+//   syscall(SYS_write, /*int*/ fd, /*char* */ buf, /*size_t*/ len);
+// for low level operations that want to avoid libc.
+#if (defined(__linux__) || defined(__FreeBSD__)) && !defined(__ANDROID__)
+#include <sys/syscall.h>
+#define ABSL_HAVE_SYSCALL_WRITE 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_SYSCALL_WRITE
+#endif
+
+#ifdef _WIN32
+#include <io.h>
+
+#define ABSL_HAVE_RAW_IO 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_RAW_IO
+#endif
+
+// TODO(gfalcon): We want raw-logging to work on as many platforms as possible.
+// Explicitly #error out when not ABSL_LOW_LEVEL_WRITE_SUPPORTED, except for a
+// whitelisted set of platforms for which we expect not to be able to raw log.
+
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static absl::base_internal::AtomicHook<
+    absl::raw_logging_internal::LogPrefixHook>
+    log_prefix_hook;
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static absl::base_internal::AtomicHook<
+    absl::raw_logging_internal::AbortHook>
+    abort_hook;
+
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+static const char kTruncated[] = " ... (message truncated)\n";
+
+// sprintf the format to the buffer, adjusting *buf and *size to reflect the
+// consumed bytes, and return whether the message fit without truncation.  If
+// truncation occurred, if possible leave room in the buffer for the message
+// kTruncated[].
+inline static bool VADoRawLog(char** buf, int* size, const char* format,
+                              va_list ap) ABSL_PRINTF_ATTRIBUTE(3, 0);
+inline static bool VADoRawLog(char** buf, int* size,
+                              const char* format, va_list ap) {
+  int n = vsnprintf(*buf, *size, format, ap);
+  bool result = true;
+  if (n < 0 || n > *size) {
+    result = false;
+    if (static_cast<size_t>(*size) > sizeof(kTruncated)) {
+      n = *size - sizeof(kTruncated);  // room for truncation message
+    } else {
+      n = 0;                           // no room for truncation message
+    }
+  }
+  *size -= n;
+  *buf += n;
+  return result;
+}
+#endif  // ABSL_LOW_LEVEL_WRITE_SUPPORTED
+
+static constexpr int kLogBufSize = 3000;
+
+namespace {
+
+// CAVEAT: vsnprintf called from *DoRawLog below has some (exotic) code paths
+// that invoke malloc() and getenv() that might acquire some locks.
+
+// Helper for RawLog below.
+// *DoRawLog writes to *buf of *size and move them past the written portion.
+// It returns true iff there was no overflow or error.
+bool DoRawLog(char** buf, int* size, const char* format, ...)
+    ABSL_PRINTF_ATTRIBUTE(3, 4);
+bool DoRawLog(char** buf, int* size, const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  int n = vsnprintf(*buf, *size, format, ap);
+  va_end(ap);
+  if (n < 0 || n > *size) return false;
+  *size -= n;
+  *buf += n;
+  return true;
+}
+
+void RawLogVA(absl::LogSeverity severity, const char* file, int line,
+              const char* format, va_list ap) ABSL_PRINTF_ATTRIBUTE(4, 0);
+void RawLogVA(absl::LogSeverity severity, const char* file, int line,
+              const char* format, va_list ap) {
+  char buffer[kLogBufSize];
+  char* buf = buffer;
+  int size = sizeof(buffer);
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  bool enabled = true;
+#else
+  bool enabled = false;
+#endif
+
+#ifdef ABSL_MIN_LOG_LEVEL
+  if (severity < static_cast<absl::LogSeverity>(ABSL_MIN_LOG_LEVEL) &&
+      severity < absl::LogSeverity::kFatal) {
+    enabled = false;
+  }
+#endif
+
+  auto log_prefix_hook_ptr = log_prefix_hook.Load();
+  if (log_prefix_hook_ptr) {
+    enabled = log_prefix_hook_ptr(severity, file, line, &buf, &size);
+  } else {
+    if (enabled) {
+      DoRawLog(&buf, &size, "[%s : %d] RAW: ", file, line);
+    }
+  }
+  const char* const prefix_end = buf;
+
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  if (enabled) {
+    bool no_chop = VADoRawLog(&buf, &size, format, ap);
+    if (no_chop) {
+      DoRawLog(&buf, &size, "\n");
+    } else {
+      DoRawLog(&buf, &size, "%s", kTruncated);
+    }
+    absl::raw_logging_internal::SafeWriteToStderr(buffer, strlen(buffer));
+  }
+#else
+  static_cast<void>(format);
+  static_cast<void>(ap);
+#endif
+
+  // Abort the process after logging a FATAL message, even if the output itself
+  // was suppressed.
+  if (severity == absl::LogSeverity::kFatal) {
+    abort_hook(file, line, buffer, prefix_end, buffer + kLogBufSize);
+    abort();
+  }
+}
+
+}  // namespace
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace raw_logging_internal {
+void SafeWriteToStderr(const char *s, size_t len) {
+#if defined(ABSL_HAVE_SYSCALL_WRITE)
+  syscall(SYS_write, STDERR_FILENO, s, len);
+#elif defined(ABSL_HAVE_POSIX_WRITE)
+  write(STDERR_FILENO, s, len);
+#elif defined(ABSL_HAVE_RAW_IO)
+  _write(/* stderr */ 2, s, len);
+#else
+  // stderr logging unsupported on this platform
+  (void) s;
+  (void) len;
+#endif
+}
+
+void RawLog(absl::LogSeverity severity, const char* file, int line,
+            const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5);
+void RawLog(absl::LogSeverity severity, const char* file, int line,
+            const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  RawLogVA(severity, file, line, format, ap);
+  va_end(ap);
+}
+
+// Non-formatting version of RawLog().
+//
+// TODO(gfalcon): When string_view no longer depends on base, change this
+// interface to take its message as a string_view instead.
+static void DefaultInternalLog(absl::LogSeverity severity, const char* file,
+                               int line, const std::string& message) {
+  RawLog(severity, file, line, "%s", message.c_str());
+}
+
+bool RawLoggingFullySupported() {
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  return true;
+#else  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  return false;
+#endif  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED
+}
+
+ABSL_DLL ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
+    absl::base_internal::AtomicHook<InternalLogFunction>
+        internal_log_function(DefaultInternalLog);
+
+void RegisterInternalLogFunction(InternalLogFunction func) {
+  internal_log_function.Store(func);
+}
+
+}  // namespace raw_logging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.h b/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.h
new file mode 100644
index 0000000..418d6c8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/raw_logging.h	
@@ -0,0 +1,183 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Thread-safe logging routines that do not allocate any memory or
+// acquire any locks, and can therefore be used by low-level memory
+// allocation, synchronization, and signal-handling code.
+
+#ifndef ABSL_BASE_INTERNAL_RAW_LOGGING_H_
+#define ABSL_BASE_INTERNAL_RAW_LOGGING_H_
+
+#include <string>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+#include "absl/base/internal/atomic_hook.h"
+#include "absl/base/log_severity.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+
+// This is similar to LOG(severity) << format..., but
+// * it is to be used ONLY by low-level modules that can't use normal LOG()
+// * it is designed to be a low-level logger that does not allocate any
+//   memory and does not need any locks, hence:
+// * it logs straight and ONLY to STDERR w/o buffering
+// * it uses an explicit printf-format and arguments list
+// * it will silently chop off really long message strings
+// Usage example:
+//   ABSL_RAW_LOG(ERROR, "Failed foo with %i: %s", status, error);
+// This will print an almost standard log line like this to stderr only:
+//   E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file
+
+#define ABSL_RAW_LOG(severity, ...)                                            \
+  do {                                                                         \
+    constexpr const char* absl_raw_logging_internal_basename =                 \
+        ::absl::raw_logging_internal::Basename(__FILE__,                       \
+                                               sizeof(__FILE__) - 1);          \
+    ::absl::raw_logging_internal::RawLog(ABSL_RAW_LOGGING_INTERNAL_##severity, \
+                                         absl_raw_logging_internal_basename,   \
+                                         __LINE__, __VA_ARGS__);               \
+  } while (0)
+
+// Similar to CHECK(condition) << message, but for low-level modules:
+// we use only ABSL_RAW_LOG that does not allocate memory.
+// We do not want to provide args list here to encourage this usage:
+//   if (!cond)  ABSL_RAW_LOG(FATAL, "foo ...", hard_to_compute_args);
+// so that the args are not computed when not needed.
+#define ABSL_RAW_CHECK(condition, message)                             \
+  do {                                                                 \
+    if (ABSL_PREDICT_FALSE(!(condition))) {                            \
+      ABSL_RAW_LOG(FATAL, "Check %s failed: %s", #condition, message); \
+    }                                                                  \
+  } while (0)
+
+// ABSL_INTERNAL_LOG and ABSL_INTERNAL_CHECK work like the RAW variants above,
+// except that if the richer log library is linked into the binary, we dispatch
+// to that instead.  This is potentially useful for internal logging and
+// assertions, where we are using RAW_LOG neither for its async-signal-safety
+// nor for its non-allocating nature, but rather because raw logging has very
+// few other dependencies.
+//
+// The API is a subset of the above: each macro only takes two arguments.  Use
+// StrCat if you need to build a richer message.
+#define ABSL_INTERNAL_LOG(severity, message)                                \
+  do {                                                                      \
+    ::absl::raw_logging_internal::internal_log_function(                    \
+        ABSL_RAW_LOGGING_INTERNAL_##severity, __FILE__, __LINE__, message); \
+  } while (0)
+
+#define ABSL_INTERNAL_CHECK(condition, message)                    \
+  do {                                                             \
+    if (ABSL_PREDICT_FALSE(!(condition))) {                        \
+      std::string death_message = "Check " #condition " failed: "; \
+      death_message += std::string(message);                       \
+      ABSL_INTERNAL_LOG(FATAL, death_message);                     \
+    }                                                              \
+  } while (0)
+
+#define ABSL_RAW_LOGGING_INTERNAL_INFO ::absl::LogSeverity::kInfo
+#define ABSL_RAW_LOGGING_INTERNAL_WARNING ::absl::LogSeverity::kWarning
+#define ABSL_RAW_LOGGING_INTERNAL_ERROR ::absl::LogSeverity::kError
+#define ABSL_RAW_LOGGING_INTERNAL_FATAL ::absl::LogSeverity::kFatal
+#define ABSL_RAW_LOGGING_INTERNAL_LEVEL(severity) \
+  ::absl::NormalizeLogSeverity(severity)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace raw_logging_internal {
+
+// Helper function to implement ABSL_RAW_LOG
+// Logs format... at "severity" level, reporting it
+// as called from file:line.
+// This does not allocate memory or acquire locks.
+void RawLog(absl::LogSeverity severity, const char* file, int line,
+            const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5);
+
+// Writes the provided buffer directly to stderr, in a safe, low-level manner.
+//
+// In POSIX this means calling write(), which is async-signal safe and does
+// not malloc.  If the platform supports the SYS_write syscall, we invoke that
+// directly to side-step any libc interception.
+void SafeWriteToStderr(const char *s, size_t len);
+
+// compile-time function to get the "base" filename, that is, the part of
+// a filename after the last "/" or "\" path separator.  The search starts at
+// the end of the string; the second parameter is the length of the string.
+constexpr const char* Basename(const char* fname, int offset) {
+  return offset == 0 || fname[offset - 1] == '/' || fname[offset - 1] == '\\'
+             ? fname + offset
+             : Basename(fname, offset - 1);
+}
+
+// For testing only.
+// Returns true if raw logging is fully supported. When it is not
+// fully supported, no messages will be emitted, but a log at FATAL
+// severity will cause an abort.
+//
+// TODO(gfalcon): Come up with a better name for this method.
+bool RawLoggingFullySupported();
+
+// Function type for a raw_logging customization hook for suppressing messages
+// by severity, and for writing custom prefixes on non-suppressed messages.
+//
+// The installed hook is called for every raw log invocation.  The message will
+// be logged to stderr only if the hook returns true.  FATAL errors will cause
+// the process to abort, even if writing to stderr is suppressed.  The hook is
+// also provided with an output buffer, where it can write a custom log message
+// prefix.
+//
+// The raw_logging system does not allocate memory or grab locks.  User-provided
+// hooks must avoid these operations, and must not throw exceptions.
+//
+// 'severity' is the severity level of the message being written.
+// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro
+// was located.
+// 'buffer' and 'buf_size' are pointers to the buffer and buffer size.  If the
+// hook writes a prefix, it must increment *buffer and decrement *buf_size
+// accordingly.
+using LogPrefixHook = bool (*)(absl::LogSeverity severity, const char* file,
+                               int line, char** buffer, int* buf_size);
+
+// Function type for a raw_logging customization hook called to abort a process
+// when a FATAL message is logged.  If the provided AbortHook() returns, the
+// logging system will call abort().
+//
+// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro
+// was located.
+// The NUL-terminated logged message lives in the buffer between 'buf_start'
+// and 'buf_end'.  'prefix_end' points to the first non-prefix character of the
+// buffer (as written by the LogPrefixHook.)
+using AbortHook = void (*)(const char* file, int line, const char* buf_start,
+                           const char* prefix_end, const char* buf_end);
+
+// Internal logging function for ABSL_INTERNAL_LOG to dispatch to.
+//
+// TODO(gfalcon): When string_view no longer depends on base, change this
+// interface to take its message as a string_view instead.
+using InternalLogFunction = void (*)(absl::LogSeverity severity,
+                                     const char* file, int line,
+                                     const std::string& message);
+
+ABSL_DLL ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES extern base_internal::AtomicHook<
+    InternalLogFunction>
+    internal_log_function;
+
+void RegisterInternalLogFunction(InternalLogFunction func);
+
+}  // namespace raw_logging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_RAW_LOGGING_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/scheduling_mode.h b/ChattingApp 000/Pods/abseil/absl/base/internal/scheduling_mode.h
new file mode 100644
index 0000000..8be5ab6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/scheduling_mode.h	
@@ -0,0 +1,58 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Core interfaces and definitions used by by low-level interfaces such as
+// SpinLock.
+
+#ifndef ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
+#define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Used to describe how a thread may be scheduled.  Typically associated with
+// the declaration of a resource supporting synchronized access.
+//
+// SCHEDULE_COOPERATIVE_AND_KERNEL:
+// Specifies that when waiting, a cooperative thread (e.g. a Fiber) may
+// reschedule (using base::scheduling semantics); allowing other cooperative
+// threads to proceed.
+//
+// SCHEDULE_KERNEL_ONLY: (Also described as "non-cooperative")
+// Specifies that no cooperative scheduling semantics may be used, even if the
+// current thread is itself cooperatively scheduled.  This means that
+// cooperative threads will NOT allow other cooperative threads to execute in
+// their place while waiting for a resource of this type.  Host operating system
+// semantics (e.g. a futex) may still be used.
+//
+// When optional, clients should strongly prefer SCHEDULE_COOPERATIVE_AND_KERNEL
+// by default.  SCHEDULE_KERNEL_ONLY should only be used for resources on which
+// base::scheduling (e.g. the implementation of a Scheduler) may depend.
+//
+// NOTE: Cooperative resources may not be nested below non-cooperative ones.
+// This means that it is invalid to to acquire a SCHEDULE_COOPERATIVE_AND_KERNEL
+// resource if a SCHEDULE_KERNEL_ONLY resource is already held.
+enum SchedulingMode {
+  SCHEDULE_KERNEL_ONLY = 0,         // Allow scheduling only the host OS.
+  SCHEDULE_COOPERATIVE_AND_KERNEL,  // Also allow cooperative scheduling.
+};
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.cc
new file mode 100644
index 0000000..830d472
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.cc	
@@ -0,0 +1,233 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/spinlock.h"
+
+#include <algorithm>
+#include <atomic>
+#include <limits>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/atomic_hook.h"
+#include "absl/base/internal/cycleclock.h"
+#include "absl/base/internal/spinlock_wait.h"
+#include "absl/base/internal/sysinfo.h" /* For NumCPUs() */
+#include "absl/base/call_once.h"
+
+// Description of lock-word:
+//  31..00: [............................3][2][1][0]
+//
+//     [0]: kSpinLockHeld
+//     [1]: kSpinLockCooperative
+//     [2]: kSpinLockDisabledScheduling
+// [31..3]: ONLY kSpinLockSleeper OR
+//          Wait time in cycles >> PROFILE_TIMESTAMP_SHIFT
+//
+// Detailed descriptions:
+//
+// Bit [0]: The lock is considered held iff kSpinLockHeld is set.
+//
+// Bit [1]: Eligible waiters (e.g. Fibers) may co-operatively reschedule when
+//          contended iff kSpinLockCooperative is set.
+//
+// Bit [2]: This bit is exclusive from bit [1].  It is used only by a
+//          non-cooperative lock.  When set, indicates that scheduling was
+//          successfully disabled when the lock was acquired.  May be unset,
+//          even if non-cooperative, if a ThreadIdentity did not yet exist at
+//          time of acquisition.
+//
+// Bit [3]: If this is the only upper bit ([31..3]) set then this lock was
+//          acquired without contention, however, at least one waiter exists.
+//
+//          Otherwise, bits [31..3] represent the time spent by the current lock
+//          holder to acquire the lock.  There may be outstanding waiter(s).
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static base_internal::AtomicHook<void (*)(
+    const void *lock, int64_t wait_cycles)>
+    submit_profile_data;
+
+void RegisterSpinLockProfiler(void (*fn)(const void *contendedlock,
+                                         int64_t wait_cycles)) {
+  submit_profile_data.Store(fn);
+}
+
+// Uncommon constructors.
+SpinLock::SpinLock(base_internal::SchedulingMode mode)
+    : lockword_(IsCooperative(mode) ? kSpinLockCooperative : 0) {
+  ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
+}
+
+SpinLock::SpinLock(base_internal::LinkerInitialized,
+                   base_internal::SchedulingMode mode) {
+  ABSL_TSAN_MUTEX_CREATE(this, 0);
+  if (IsCooperative(mode)) {
+    InitLinkerInitializedAndCooperative();
+  }
+  // Otherwise, lockword_ is already initialized.
+}
+
+// Static (linker initialized) spinlocks always start life as functional
+// non-cooperative locks.  When their static constructor does run, it will call
+// this initializer to augment the lockword with the cooperative bit.  By
+// actually taking the lock when we do this we avoid the need for an atomic
+// operation in the regular unlock path.
+//
+// SlowLock() must be careful to re-test for this bit so that any outstanding
+// waiters may be upgraded to cooperative status.
+void SpinLock::InitLinkerInitializedAndCooperative() {
+  Lock();
+  lockword_.fetch_or(kSpinLockCooperative, std::memory_order_relaxed);
+  Unlock();
+}
+
+// Monitor the lock to see if its value changes within some time period
+// (adaptive_spin_count loop iterations). The last value read from the lock
+// is returned from the method.
+uint32_t SpinLock::SpinLoop() {
+  // We are already in the slow path of SpinLock, initialize the
+  // adaptive_spin_count here.
+  ABSL_CONST_INIT static absl::once_flag init_adaptive_spin_count;
+  ABSL_CONST_INIT static int adaptive_spin_count = 0;
+  base_internal::LowLevelCallOnce(&init_adaptive_spin_count, []() {
+    adaptive_spin_count = base_internal::NumCPUs() > 1 ? 1000 : 1;
+  });
+
+  int c = adaptive_spin_count;
+  uint32_t lock_value;
+  do {
+    lock_value = lockword_.load(std::memory_order_relaxed);
+  } while ((lock_value & kSpinLockHeld) != 0 && --c > 0);
+  return lock_value;
+}
+
+void SpinLock::SlowLock() {
+  uint32_t lock_value = SpinLoop();
+  lock_value = TryLockInternal(lock_value, 0);
+  if ((lock_value & kSpinLockHeld) == 0) {
+    return;
+  }
+  // The lock was not obtained initially, so this thread needs to wait for
+  // it.  Record the current timestamp in the local variable wait_start_time
+  // so the total wait time can be stored in the lockword once this thread
+  // obtains the lock.
+  int64_t wait_start_time = CycleClock::Now();
+  uint32_t wait_cycles = 0;
+  int lock_wait_call_count = 0;
+  while ((lock_value & kSpinLockHeld) != 0) {
+    // If the lock is currently held, but not marked as having a sleeper, mark
+    // it as having a sleeper.
+    if ((lock_value & kWaitTimeMask) == 0) {
+      // Here, just "mark" that the thread is going to sleep.  Don't store the
+      // lock wait time in the lock as that will cause the current lock
+      // owner to think it experienced contention.
+      if (lockword_.compare_exchange_strong(
+              lock_value, lock_value | kSpinLockSleeper,
+              std::memory_order_relaxed, std::memory_order_relaxed)) {
+        // Successfully transitioned to kSpinLockSleeper.  Pass
+        // kSpinLockSleeper to the SpinLockWait routine to properly indicate
+        // the last lock_value observed.
+        lock_value |= kSpinLockSleeper;
+      } else if ((lock_value & kSpinLockHeld) == 0) {
+        // Lock is free again, so try and acquire it before sleeping.  The
+        // new lock state will be the number of cycles this thread waited if
+        // this thread obtains the lock.
+        lock_value = TryLockInternal(lock_value, wait_cycles);
+        continue;   // Skip the delay at the end of the loop.
+      }
+    }
+
+    base_internal::SchedulingMode scheduling_mode;
+    if ((lock_value & kSpinLockCooperative) != 0) {
+      scheduling_mode = base_internal::SCHEDULE_COOPERATIVE_AND_KERNEL;
+    } else {
+      scheduling_mode = base_internal::SCHEDULE_KERNEL_ONLY;
+    }
+    // SpinLockDelay() calls into fiber scheduler, we need to see
+    // synchronization there to avoid false positives.
+    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0);
+    // Wait for an OS specific delay.
+    base_internal::SpinLockDelay(&lockword_, lock_value, ++lock_wait_call_count,
+                                 scheduling_mode);
+    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0);
+    // Spin again after returning from the wait routine to give this thread
+    // some chance of obtaining the lock.
+    lock_value = SpinLoop();
+    wait_cycles = EncodeWaitCycles(wait_start_time, CycleClock::Now());
+    lock_value = TryLockInternal(lock_value, wait_cycles);
+  }
+}
+
+void SpinLock::SlowUnlock(uint32_t lock_value) {
+  base_internal::SpinLockWake(&lockword_,
+                              false);  // wake waiter if necessary
+
+  // If our acquisition was contended, collect contentionz profile info.  We
+  // reserve a unitary wait time to represent that a waiter exists without our
+  // own acquisition having been contended.
+  if ((lock_value & kWaitTimeMask) != kSpinLockSleeper) {
+    const uint64_t wait_cycles = DecodeWaitCycles(lock_value);
+    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0);
+    submit_profile_data(this, wait_cycles);
+    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0);
+  }
+}
+
+// We use the upper 29 bits of the lock word to store the time spent waiting to
+// acquire this lock.  This is reported by contentionz profiling.  Since the
+// lower bits of the cycle counter wrap very quickly on high-frequency
+// processors we divide to reduce the granularity to 2^PROFILE_TIMESTAMP_SHIFT
+// sized units.  On a 4Ghz machine this will lose track of wait times greater
+// than (2^29/4 Ghz)*128 =~ 17.2 seconds.  Such waits should be extremely rare.
+enum { PROFILE_TIMESTAMP_SHIFT = 7 };
+enum { LOCKWORD_RESERVED_SHIFT = 3 };  // We currently reserve the lower 3 bits.
+
+uint32_t SpinLock::EncodeWaitCycles(int64_t wait_start_time,
+                                    int64_t wait_end_time) {
+  static const int64_t kMaxWaitTime =
+      std::numeric_limits<uint32_t>::max() >> LOCKWORD_RESERVED_SHIFT;
+  int64_t scaled_wait_time =
+      (wait_end_time - wait_start_time) >> PROFILE_TIMESTAMP_SHIFT;
+
+  // Return a representation of the time spent waiting that can be stored in
+  // the lock word's upper bits.
+  uint32_t clamped = static_cast<uint32_t>(
+      std::min(scaled_wait_time, kMaxWaitTime) << LOCKWORD_RESERVED_SHIFT);
+
+  if (clamped == 0) {
+    return kSpinLockSleeper;  // Just wake waiters, but don't record contention.
+  }
+  // Bump up value if necessary to avoid returning kSpinLockSleeper.
+  const uint32_t kMinWaitTime =
+      kSpinLockSleeper + (1 << LOCKWORD_RESERVED_SHIFT);
+  if (clamped == kSpinLockSleeper) {
+    return kMinWaitTime;
+  }
+  return clamped;
+}
+
+uint64_t SpinLock::DecodeWaitCycles(uint32_t lock_value) {
+  // Cast to uint32_t first to ensure bits [63:32] are cleared.
+  const uint64_t scaled_wait_time =
+      static_cast<uint32_t>(lock_value & kWaitTimeMask);
+  return scaled_wait_time
+      << (PROFILE_TIMESTAMP_SHIFT - LOCKWORD_RESERVED_SHIFT);
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.h b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.h
new file mode 100644
index 0000000..24e2e9a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock.h	
@@ -0,0 +1,243 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+//  Most users requiring mutual exclusion should use Mutex.
+//  SpinLock is provided for use in three situations:
+//   - for use in code that Mutex itself depends on
+//   - to get a faster fast-path release under low contention (without an
+//     atomic read-modify-write) In return, SpinLock has worse behaviour under
+//     contention, which is why Mutex is preferred in most situations.
+//   - for async signal safety (see below)
+
+// SpinLock is async signal safe.  If a spinlock is used within a signal
+// handler, all code that acquires the lock must ensure that the signal cannot
+// arrive while they are holding the lock.  Typically, this is done by blocking
+// the signal.
+
+#ifndef ABSL_BASE_INTERNAL_SPINLOCK_H_
+#define ABSL_BASE_INTERNAL_SPINLOCK_H_
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <atomic>
+
+#include "absl/base/attributes.h"
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/low_level_scheduling.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/scheduling_mode.h"
+#include "absl/base/internal/tsan_mutex_interface.h"
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/base/thread_annotations.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+class ABSL_LOCKABLE SpinLock {
+ public:
+  SpinLock() : lockword_(kSpinLockCooperative) {
+    ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
+  }
+
+  // Special constructor for use with static SpinLock objects.  E.g.,
+  //
+  //    static SpinLock lock(base_internal::kLinkerInitialized);
+  //
+  // When initialized using this constructor, we depend on the fact
+  // that the linker has already initialized the memory appropriately. The lock
+  // is initialized in non-cooperative mode.
+  //
+  // A SpinLock constructed like this can be freely used from global
+  // initializers without worrying about the order in which global
+  // initializers run.
+  explicit SpinLock(base_internal::LinkerInitialized) {
+    // Does nothing; lockword_ is already initialized
+    ABSL_TSAN_MUTEX_CREATE(this, 0);
+  }
+
+  // Constructors that allow non-cooperative spinlocks to be created for use
+  // inside thread schedulers.  Normal clients should not use these.
+  explicit SpinLock(base_internal::SchedulingMode mode);
+  SpinLock(base_internal::LinkerInitialized,
+           base_internal::SchedulingMode mode);
+
+  ~SpinLock() { ABSL_TSAN_MUTEX_DESTROY(this, __tsan_mutex_not_static); }
+
+  // Acquire this SpinLock.
+  inline void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION() {
+    ABSL_TSAN_MUTEX_PRE_LOCK(this, 0);
+    if (!TryLockImpl()) {
+      SlowLock();
+    }
+    ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0);
+  }
+
+  // Try to acquire this SpinLock without blocking and return true if the
+  // acquisition was successful.  If the lock was not acquired, false is
+  // returned.  If this SpinLock is free at the time of the call, TryLock
+  // will return true with high probability.
+  inline bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
+    ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_try_lock);
+    bool res = TryLockImpl();
+    ABSL_TSAN_MUTEX_POST_LOCK(
+        this, __tsan_mutex_try_lock | (res ? 0 : __tsan_mutex_try_lock_failed),
+        0);
+    return res;
+  }
+
+  // Release this SpinLock, which must be held by the calling thread.
+  inline void Unlock() ABSL_UNLOCK_FUNCTION() {
+    ABSL_TSAN_MUTEX_PRE_UNLOCK(this, 0);
+    uint32_t lock_value = lockword_.load(std::memory_order_relaxed);
+    lock_value = lockword_.exchange(lock_value & kSpinLockCooperative,
+                                    std::memory_order_release);
+
+    if ((lock_value & kSpinLockDisabledScheduling) != 0) {
+      base_internal::SchedulingGuard::EnableRescheduling(true);
+    }
+    if ((lock_value & kWaitTimeMask) != 0) {
+      // Collect contentionz profile info, and speed the wakeup of any waiter.
+      // The wait_cycles value indicates how long this thread spent waiting
+      // for the lock.
+      SlowUnlock(lock_value);
+    }
+    ABSL_TSAN_MUTEX_POST_UNLOCK(this, 0);
+  }
+
+  // Determine if the lock is held.  When the lock is held by the invoking
+  // thread, true will always be returned. Intended to be used as
+  // CHECK(lock.IsHeld()).
+  inline bool IsHeld() const {
+    return (lockword_.load(std::memory_order_relaxed) & kSpinLockHeld) != 0;
+  }
+
+ protected:
+  // These should not be exported except for testing.
+
+  // Store number of cycles between wait_start_time and wait_end_time in a
+  // lock value.
+  static uint32_t EncodeWaitCycles(int64_t wait_start_time,
+                                   int64_t wait_end_time);
+
+  // Extract number of wait cycles in a lock value.
+  static uint64_t DecodeWaitCycles(uint32_t lock_value);
+
+  // Provide access to protected method above.  Use for testing only.
+  friend struct SpinLockTest;
+
+ private:
+  // lockword_ is used to store the following:
+  //
+  // bit[0] encodes whether a lock is being held.
+  // bit[1] encodes whether a lock uses cooperative scheduling.
+  // bit[2] encodes whether a lock disables scheduling.
+  // bit[3:31] encodes time a lock spent on waiting as a 29-bit unsigned int.
+  enum { kSpinLockHeld = 1 };
+  enum { kSpinLockCooperative = 2 };
+  enum { kSpinLockDisabledScheduling = 4 };
+  enum { kSpinLockSleeper = 8 };
+  enum { kWaitTimeMask =                      // Includes kSpinLockSleeper.
+    ~(kSpinLockHeld | kSpinLockCooperative | kSpinLockDisabledScheduling) };
+
+  // Returns true if the provided scheduling mode is cooperative.
+  static constexpr bool IsCooperative(
+      base_internal::SchedulingMode scheduling_mode) {
+    return scheduling_mode == base_internal::SCHEDULE_COOPERATIVE_AND_KERNEL;
+  }
+
+  uint32_t TryLockInternal(uint32_t lock_value, uint32_t wait_cycles);
+  void InitLinkerInitializedAndCooperative();
+  void SlowLock() ABSL_ATTRIBUTE_COLD;
+  void SlowUnlock(uint32_t lock_value) ABSL_ATTRIBUTE_COLD;
+  uint32_t SpinLoop();
+
+  inline bool TryLockImpl() {
+    uint32_t lock_value = lockword_.load(std::memory_order_relaxed);
+    return (TryLockInternal(lock_value, 0) & kSpinLockHeld) == 0;
+  }
+
+  std::atomic<uint32_t> lockword_;
+
+  SpinLock(const SpinLock&) = delete;
+  SpinLock& operator=(const SpinLock&) = delete;
+};
+
+// Corresponding locker object that arranges to acquire a spinlock for
+// the duration of a C++ scope.
+class ABSL_SCOPED_LOCKABLE SpinLockHolder {
+ public:
+  inline explicit SpinLockHolder(SpinLock* l) ABSL_EXCLUSIVE_LOCK_FUNCTION(l)
+      : lock_(l) {
+    l->Lock();
+  }
+  inline ~SpinLockHolder() ABSL_UNLOCK_FUNCTION() { lock_->Unlock(); }
+
+  SpinLockHolder(const SpinLockHolder&) = delete;
+  SpinLockHolder& operator=(const SpinLockHolder&) = delete;
+
+ private:
+  SpinLock* lock_;
+};
+
+// Register a hook for profiling support.
+//
+// The function pointer registered here will be called whenever a spinlock is
+// contended.  The callback is given an opaque handle to the contended spinlock
+// and the number of wait cycles.  This is thread-safe, but only a single
+// profiler can be registered.  It is an error to call this function multiple
+// times with different arguments.
+void RegisterSpinLockProfiler(void (*fn)(const void* lock,
+                                         int64_t wait_cycles));
+
+//------------------------------------------------------------------------------
+// Public interface ends here.
+//------------------------------------------------------------------------------
+
+// If (result & kSpinLockHeld) == 0, then *this was successfully locked.
+// Otherwise, returns last observed value for lockword_.
+inline uint32_t SpinLock::TryLockInternal(uint32_t lock_value,
+                                          uint32_t wait_cycles) {
+  if ((lock_value & kSpinLockHeld) != 0) {
+    return lock_value;
+  }
+
+  uint32_t sched_disabled_bit = 0;
+  if ((lock_value & kSpinLockCooperative) == 0) {
+    // For non-cooperative locks we must make sure we mark ourselves as
+    // non-reschedulable before we attempt to CompareAndSwap.
+    if (base_internal::SchedulingGuard::DisableRescheduling()) {
+      sched_disabled_bit = kSpinLockDisabledScheduling;
+    }
+  }
+
+  if (!lockword_.compare_exchange_strong(
+          lock_value,
+          kSpinLockHeld | lock_value | wait_cycles | sched_disabled_bit,
+          std::memory_order_acquire, std::memory_order_relaxed)) {
+    base_internal::SchedulingGuard::EnableRescheduling(sched_disabled_bit != 0);
+  }
+
+  return lock_value;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_SPINLOCK_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_akaros.inc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_akaros.inc
new file mode 100644
index 0000000..bc46894
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_akaros.inc	
@@ -0,0 +1,35 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is an Akaros-specific part of spinlock_wait.cc
+
+#include <atomic>
+
+#include "absl/base/internal/scheduling_mode.h"
+
+extern "C" {
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockDelay(
+    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */,
+    int /* loop */, absl::base_internal::SchedulingMode /* mode */) {
+  // In Akaros, one must take care not to call anything that could cause a
+  // malloc(), a blocking system call, or a uthread_yield() while holding a
+  // spinlock. Our callers assume will not call into libraries or other
+  // arbitrary code.
+}
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(
+    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
+
+}  // extern "C"
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_linux.inc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_linux.inc
new file mode 100644
index 0000000..323edd6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_linux.inc	
@@ -0,0 +1,66 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Linux-specific part of spinlock_wait.cc
+
+#include <linux/futex.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include <atomic>
+#include <climits>
+#include <cstdint>
+#include <ctime>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/errno_saver.h"
+
+// The SpinLock lockword is `std::atomic<uint32_t>`. Here we assert that
+// `std::atomic<uint32_t>` is bitwise equivalent of the `int` expected
+// by SYS_futex. We also assume that reads/writes done to the lockword
+// by SYS_futex have rational semantics with regard to the
+// std::atomic<> API. C++ provides no guarantees of these assumptions,
+// but they are believed to hold in practice.
+static_assert(sizeof(std::atomic<uint32_t>) == sizeof(int),
+              "SpinLock lockword has the wrong size for a futex");
+
+// Some Android headers are missing these definitions even though they
+// support these futex operations.
+#ifdef __BIONIC__
+#ifndef SYS_futex
+#define SYS_futex __NR_futex
+#endif
+#ifndef FUTEX_PRIVATE_FLAG
+#define FUTEX_PRIVATE_FLAG 128
+#endif
+#endif
+
+extern "C" {
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockDelay(
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
+    absl::base_internal::SchedulingMode) {
+  absl::base_internal::ErrnoSaver errno_saver;
+  struct timespec tm;
+  tm.tv_sec = 0;
+  tm.tv_nsec = absl::base_internal::SpinLockSuggestedDelayNS(loop);
+  syscall(SYS_futex, w, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, value, &tm);
+}
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,
+                                                  bool all) {
+  syscall(SYS_futex, w, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, all ? INT_MAX : 1, 0);
+}
+
+}  // extern "C"
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_posix.inc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_posix.inc
new file mode 100644
index 0000000..fcd21b1
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_posix.inc	
@@ -0,0 +1,46 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Posix-specific part of spinlock_wait.cc
+
+#include <sched.h>
+
+#include <atomic>
+#include <ctime>
+
+#include "absl/base/internal/errno_saver.h"
+#include "absl/base/internal/scheduling_mode.h"
+#include "absl/base/port.h"
+
+extern "C" {
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockDelay(
+    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop,
+    absl::base_internal::SchedulingMode /* mode */) {
+  absl::base_internal::ErrnoSaver errno_saver;
+  if (loop == 0) {
+  } else if (loop == 1) {
+    sched_yield();
+  } else {
+    struct timespec tm;
+    tm.tv_sec = 0;
+    tm.tv_nsec = absl::base_internal::SpinLockSuggestedDelayNS(loop);
+    nanosleep(&tm, nullptr);
+  }
+}
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(
+    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
+
+}  // extern "C"
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.cc
new file mode 100644
index 0000000..fa824be
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.cc	
@@ -0,0 +1,81 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The OS-specific header included below must provide two calls:
+// AbslInternalSpinLockDelay() and AbslInternalSpinLockWake().
+// See spinlock_wait.h for the specs.
+
+#include <atomic>
+#include <cstdint>
+
+#include "absl/base/internal/spinlock_wait.h"
+
+#if defined(_WIN32)
+#include "absl/base/internal/spinlock_win32.inc"
+#elif defined(__linux__)
+#include "absl/base/internal/spinlock_linux.inc"
+#elif defined(__akaros__)
+#include "absl/base/internal/spinlock_akaros.inc"
+#else
+#include "absl/base/internal/spinlock_posix.inc"
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// See spinlock_wait.h for spec.
+uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
+                      const SpinLockWaitTransition trans[],
+                      base_internal::SchedulingMode scheduling_mode) {
+  int loop = 0;
+  for (;;) {
+    uint32_t v = w->load(std::memory_order_acquire);
+    int i;
+    for (i = 0; i != n && v != trans[i].from; i++) {
+    }
+    if (i == n) {
+      SpinLockDelay(w, v, ++loop, scheduling_mode);  // no matching transition
+    } else if (trans[i].to == v ||                   // null transition
+               w->compare_exchange_strong(v, trans[i].to,
+                                          std::memory_order_acquire,
+                                          std::memory_order_relaxed)) {
+      if (trans[i].done) return v;
+    }
+  }
+}
+
+static std::atomic<uint64_t> delay_rand;
+
+// Return a suggested delay in nanoseconds for iteration number "loop"
+int SpinLockSuggestedDelayNS(int loop) {
+  // Weak pseudo-random number generator to get some spread between threads
+  // when many are spinning.
+  uint64_t r = delay_rand.load(std::memory_order_relaxed);
+  r = 0x5deece66dLL * r + 0xb;   // numbers from nrand48()
+  delay_rand.store(r, std::memory_order_relaxed);
+
+  if (loop < 0 || loop > 32) {   // limit loop to 0..32
+    loop = 32;
+  }
+  const int kMinDelay = 128 << 10;  // 128us
+  // Double delay every 8 iterations, up to 16x (2ms).
+  int delay = kMinDelay << (loop / 8);
+  // Randomize in delay..2*delay range, for resulting 128us..4ms range.
+  return delay | ((delay - 1) & static_cast<int>(r));
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.h b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.h
new file mode 100644
index 0000000..169bc74
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_wait.h	
@@ -0,0 +1,93 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
+#define ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
+
+// Operations to make atomic transitions on a word, and to allow
+// waiting for those transitions to become possible.
+
+#include <stdint.h>
+#include <atomic>
+
+#include "absl/base/internal/scheduling_mode.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// SpinLockWait() waits until it can perform one of several transitions from
+// "from" to "to".  It returns when it performs a transition where done==true.
+struct SpinLockWaitTransition {
+  uint32_t from;
+  uint32_t to;
+  bool done;
+};
+
+// Wait until *w can transition from trans[i].from to trans[i].to for some i
+// satisfying 0<=i<n && trans[i].done, atomically make the transition,
+// then return the old value of *w.   Make any other atomic transitions
+// where !trans[i].done, but continue waiting.
+uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
+                      const SpinLockWaitTransition trans[],
+                      SchedulingMode scheduling_mode);
+
+// If possible, wake some thread that has called SpinLockDelay(w, ...). If
+// "all" is true, wake all such threads.  This call is a hint, and on some
+// systems it may be a no-op; threads calling SpinLockDelay() will always wake
+// eventually even if SpinLockWake() is never called.
+void SpinLockWake(std::atomic<uint32_t> *w, bool all);
+
+// Wait for an appropriate spin delay on iteration "loop" of a
+// spin loop on location *w, whose previously observed value was "value".
+// SpinLockDelay() may do nothing, may yield the CPU, may sleep a clock tick,
+// or may wait for a delay that can be truncated by a call to SpinLockWake(w).
+// In all cases, it must return in bounded time even if SpinLockWake() is not
+// called.
+void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
+                   base_internal::SchedulingMode scheduling_mode);
+
+// Helper used by AbslInternalSpinLockDelay.
+// Returns a suggested delay in nanoseconds for iteration number "loop".
+int SpinLockSuggestedDelayNS(int loop);
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// In some build configurations we pass --detect-odr-violations to the
+// gold linker.  This causes it to flag weak symbol overrides as ODR
+// violations.  Because ODR only applies to C++ and not C,
+// --detect-odr-violations ignores symbols not mangled with C++ names.
+// By changing our extension points to be extern "C", we dodge this
+// check.
+extern "C" {
+void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
+void AbslInternalSpinLockDelay(
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
+    absl::base_internal::SchedulingMode scheduling_mode);
+}
+
+inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
+                                              bool all) {
+  AbslInternalSpinLockWake(w, all);
+}
+
+inline void absl::base_internal::SpinLockDelay(
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
+    absl::base_internal::SchedulingMode scheduling_mode) {
+  AbslInternalSpinLockDelay(w, value, loop, scheduling_mode);
+}
+
+#endif  // ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_win32.inc b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_win32.inc
new file mode 100644
index 0000000..78654b5
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/spinlock_win32.inc	
@@ -0,0 +1,37 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Win32-specific part of spinlock_wait.cc
+
+#include <windows.h>
+#include <atomic>
+#include "absl/base/internal/scheduling_mode.h"
+
+extern "C" {
+
+void AbslInternalSpinLockDelay(std::atomic<uint32_t>* /* lock_word */,
+                               uint32_t /* value */, int loop,
+                               absl::base_internal::SchedulingMode /* mode */) {
+  if (loop == 0) {
+  } else if (loop == 1) {
+    Sleep(0);
+  } else {
+    Sleep(absl::base_internal::SpinLockSuggestedDelayNS(loop) / 1000000);
+  }
+}
+
+void AbslInternalSpinLockWake(std::atomic<uint32_t>* /* lock_word */,
+                              bool /* all */) {}
+
+}  // extern "C"
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.cc
new file mode 100644
index 0000000..a0930e9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.cc	
@@ -0,0 +1,416 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/sysinfo.h"
+
+#include "absl/base/attributes.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <fcntl.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#ifdef __linux__
+#include <sys/syscall.h>
+#endif
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#endif
+
+#if defined(__myriad2__)
+#include <rtems.h>
+#endif
+
+#include <string.h>
+#include <cassert>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <ctime>
+#include <limits>
+#include <thread>  // NOLINT(build/c++11)
+#include <utility>
+#include <vector>
+
+#include "absl/base/call_once.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+#include "absl/base/internal/unscaledcycleclock.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+static int GetNumCPUs() {
+#if defined(__myriad2__)
+  return 1;
+#else
+  // Other possibilities:
+  //  - Read /sys/devices/system/cpu/online and use cpumask_parse()
+  //  - sysconf(_SC_NPROCESSORS_ONLN)
+  return std::thread::hardware_concurrency();
+#endif
+}
+
+#if defined(_WIN32)
+
+static double GetNominalCPUFrequency() {
+#pragma comment(lib, "advapi32.lib")  // For Reg* functions.
+  HKEY key;
+  // Use the Reg* functions rather than the SH functions because shlwapi.dll
+  // pulls in gdi32.dll which makes process destruction much more costly.
+  if (RegOpenKeyExA(HKEY_LOCAL_MACHINE,
+                    "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0", 0,
+                    KEY_READ, &key) == ERROR_SUCCESS) {
+    DWORD type = 0;
+    DWORD data = 0;
+    DWORD data_size = sizeof(data);
+    auto result = RegQueryValueExA(key, "~MHz", 0, &type,
+                                   reinterpret_cast<LPBYTE>(&data), &data_size);
+    RegCloseKey(key);
+    if (result == ERROR_SUCCESS && type == REG_DWORD &&
+        data_size == sizeof(data)) {
+      return data * 1e6;  // Value is MHz.
+    }
+  }
+  return 1.0;
+}
+
+#elif defined(CTL_HW) && defined(HW_CPU_FREQ)
+
+static double GetNominalCPUFrequency() {
+  unsigned freq;
+  size_t size = sizeof(freq);
+  int mib[2] = {CTL_HW, HW_CPU_FREQ};
+  if (sysctl(mib, 2, &freq, &size, nullptr, 0) == 0) {
+    return static_cast<double>(freq);
+  }
+  return 1.0;
+}
+
+#else
+
+// Helper function for reading a long from a file. Returns true if successful
+// and the memory location pointed to by value is set to the value read.
+static bool ReadLongFromFile(const char *file, long *value) {
+  bool ret = false;
+  int fd = open(file, O_RDONLY);
+  if (fd != -1) {
+    char line[1024];
+    char *err;
+    memset(line, '\0', sizeof(line));
+    int len = read(fd, line, sizeof(line) - 1);
+    if (len <= 0) {
+      ret = false;
+    } else {
+      const long temp_value = strtol(line, &err, 10);
+      if (line[0] != '\0' && (*err == '\n' || *err == '\0')) {
+        *value = temp_value;
+        ret = true;
+      }
+    }
+    close(fd);
+  }
+  return ret;
+}
+
+#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY)
+
+// Reads a monotonic time source and returns a value in
+// nanoseconds. The returned value uses an arbitrary epoch, not the
+// Unix epoch.
+static int64_t ReadMonotonicClockNanos() {
+  struct timespec t;
+#ifdef CLOCK_MONOTONIC_RAW
+  int rc = clock_gettime(CLOCK_MONOTONIC_RAW, &t);
+#else
+  int rc = clock_gettime(CLOCK_MONOTONIC, &t);
+#endif
+  if (rc != 0) {
+    perror("clock_gettime() failed");
+    abort();
+  }
+  return int64_t{t.tv_sec} * 1000000000 + t.tv_nsec;
+}
+
+class UnscaledCycleClockWrapperForInitializeFrequency {
+ public:
+  static int64_t Now() { return base_internal::UnscaledCycleClock::Now(); }
+};
+
+struct TimeTscPair {
+  int64_t time;  // From ReadMonotonicClockNanos().
+  int64_t tsc;   // From UnscaledCycleClock::Now().
+};
+
+// Returns a pair of values (monotonic kernel time, TSC ticks) that
+// approximately correspond to each other.  This is accomplished by
+// doing several reads and picking the reading with the lowest
+// latency.  This approach is used to minimize the probability that
+// our thread was preempted between clock reads.
+static TimeTscPair GetTimeTscPair() {
+  int64_t best_latency = std::numeric_limits<int64_t>::max();
+  TimeTscPair best;
+  for (int i = 0; i < 10; ++i) {
+    int64_t t0 = ReadMonotonicClockNanos();
+    int64_t tsc = UnscaledCycleClockWrapperForInitializeFrequency::Now();
+    int64_t t1 = ReadMonotonicClockNanos();
+    int64_t latency = t1 - t0;
+    if (latency < best_latency) {
+      best_latency = latency;
+      best.time = t0;
+      best.tsc = tsc;
+    }
+  }
+  return best;
+}
+
+// Measures and returns the TSC frequency by taking a pair of
+// measurements approximately `sleep_nanoseconds` apart.
+static double MeasureTscFrequencyWithSleep(int sleep_nanoseconds) {
+  auto t0 = GetTimeTscPair();
+  struct timespec ts;
+  ts.tv_sec = 0;
+  ts.tv_nsec = sleep_nanoseconds;
+  while (nanosleep(&ts, &ts) != 0 && errno == EINTR) {}
+  auto t1 = GetTimeTscPair();
+  double elapsed_ticks = t1.tsc - t0.tsc;
+  double elapsed_time = (t1.time - t0.time) * 1e-9;
+  return elapsed_ticks / elapsed_time;
+}
+
+// Measures and returns the TSC frequency by calling
+// MeasureTscFrequencyWithSleep(), doubling the sleep interval until the
+// frequency measurement stabilizes.
+static double MeasureTscFrequency() {
+  double last_measurement = -1.0;
+  int sleep_nanoseconds = 1000000;  // 1 millisecond.
+  for (int i = 0; i < 8; ++i) {
+    double measurement = MeasureTscFrequencyWithSleep(sleep_nanoseconds);
+    if (measurement * 0.99 < last_measurement &&
+        last_measurement < measurement * 1.01) {
+      // Use the current measurement if it is within 1% of the
+      // previous measurement.
+      return measurement;
+    }
+    last_measurement = measurement;
+    sleep_nanoseconds *= 2;
+  }
+  return last_measurement;
+}
+
+#endif  // ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+
+static double GetNominalCPUFrequency() {
+  long freq = 0;
+
+  // Google's production kernel has a patch to export the TSC
+  // frequency through sysfs. If the kernel is exporting the TSC
+  // frequency use that. There are issues where cpuinfo_max_freq
+  // cannot be relied on because the BIOS may be exporting an invalid
+  // p-state (on x86) or p-states may be used to put the processor in
+  // a new mode (turbo mode). Essentially, those frequencies cannot
+  // always be relied upon. The same reasons apply to /proc/cpuinfo as
+  // well.
+  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)) {
+    return freq * 1e3;  // Value is kHz.
+  }
+
+#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY)
+  // On these platforms, the TSC frequency is the nominal CPU
+  // frequency.  But without having the kernel export it directly
+  // though /sys/devices/system/cpu/cpu0/tsc_freq_khz, there is no
+  // other way to reliably get the TSC frequency, so we have to
+  // measure it ourselves.  Some CPUs abuse cpuinfo_max_freq by
+  // exporting "fake" frequencies for implementing new features. For
+  // example, Intel's turbo mode is enabled by exposing a p-state
+  // value with a higher frequency than that of the real TSC
+  // rate. Because of this, we prefer to measure the TSC rate
+  // ourselves on i386 and x86-64.
+  return MeasureTscFrequency();
+#else
+
+  // If CPU scaling is in effect, we want to use the *maximum*
+  // frequency, not whatever CPU speed some random processor happens
+  // to be using now.
+  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq",
+                       &freq)) {
+    return freq * 1e3;  // Value is kHz.
+  }
+
+  return 1.0;
+#endif  // !ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+}
+
+#endif
+
+ABSL_CONST_INIT static once_flag init_num_cpus_once;
+ABSL_CONST_INIT static int num_cpus = 0;
+
+// NumCPUs() may be called before main() and before malloc is properly
+// initialized, therefore this must not allocate memory.
+int NumCPUs() {
+  base_internal::LowLevelCallOnce(
+      &init_num_cpus_once, []() { num_cpus = GetNumCPUs(); });
+  return num_cpus;
+}
+
+// A default frequency of 0.0 might be dangerous if it is used in division.
+ABSL_CONST_INIT static once_flag init_nominal_cpu_frequency_once;
+ABSL_CONST_INIT static double nominal_cpu_frequency = 1.0;
+
+// NominalCPUFrequency() may be called before main() and before malloc is
+// properly initialized, therefore this must not allocate memory.
+double NominalCPUFrequency() {
+  base_internal::LowLevelCallOnce(
+      &init_nominal_cpu_frequency_once,
+      []() { nominal_cpu_frequency = GetNominalCPUFrequency(); });
+  return nominal_cpu_frequency;
+}
+
+#if defined(_WIN32)
+
+pid_t GetTID() {
+  return pid_t{GetCurrentThreadId()};
+}
+
+#elif defined(__linux__)
+
+#ifndef SYS_gettid
+#define SYS_gettid __NR_gettid
+#endif
+
+pid_t GetTID() {
+  return syscall(SYS_gettid);
+}
+
+#elif defined(__akaros__)
+
+pid_t GetTID() {
+  // Akaros has a concept of "vcore context", which is the state the program
+  // is forced into when we need to make a user-level scheduling decision, or
+  // run a signal handler.  This is analogous to the interrupt context that a
+  // CPU might enter if it encounters some kind of exception.
+  //
+  // There is no current thread context in vcore context, but we need to give
+  // a reasonable answer if asked for a thread ID (e.g., in a signal handler).
+  // Thread 0 always exists, so if we are in vcore context, we return that.
+  //
+  // Otherwise, we know (since we are using pthreads) that the uthread struct
+  // current_uthread is pointing to is the first element of a
+  // struct pthread_tcb, so we extract and return the thread ID from that.
+  //
+  // TODO(dcross): Akaros anticipates moving the thread ID to the uthread
+  // structure at some point. We should modify this code to remove the cast
+  // when that happens.
+  if (in_vcore_context())
+    return 0;
+  return reinterpret_cast<struct pthread_tcb *>(current_uthread)->id;
+}
+
+#elif defined(__myriad2__)
+
+pid_t GetTID() {
+  uint32_t tid;
+  rtems_task_ident(RTEMS_SELF, 0, &tid);
+  return tid;
+}
+
+#else
+
+// Fallback implementation of GetTID using pthread_getspecific.
+static once_flag tid_once;
+static pthread_key_t tid_key;
+static absl::base_internal::SpinLock tid_lock(
+    absl::base_internal::kLinkerInitialized);
+
+// We set a bit per thread in this array to indicate that an ID is in
+// use. ID 0 is unused because it is the default value returned by
+// pthread_getspecific().
+static std::vector<uint32_t>* tid_array GUARDED_BY(tid_lock) = nullptr;
+static constexpr int kBitsPerWord = 32;  // tid_array is uint32_t.
+
+// Returns the TID to tid_array.
+static void FreeTID(void *v) {
+  intptr_t tid = reinterpret_cast<intptr_t>(v);
+  int word = tid / kBitsPerWord;
+  uint32_t mask = ~(1u << (tid % kBitsPerWord));
+  absl::base_internal::SpinLockHolder lock(&tid_lock);
+  assert(0 <= word && static_cast<size_t>(word) < tid_array->size());
+  (*tid_array)[word] &= mask;
+}
+
+static void InitGetTID() {
+  if (pthread_key_create(&tid_key, FreeTID) != 0) {
+    // The logging system calls GetTID() so it can't be used here.
+    perror("pthread_key_create failed");
+    abort();
+  }
+
+  // Initialize tid_array.
+  absl::base_internal::SpinLockHolder lock(&tid_lock);
+  tid_array = new std::vector<uint32_t>(1);
+  (*tid_array)[0] = 1;  // ID 0 is never-allocated.
+}
+
+// Return a per-thread small integer ID from pthread's thread-specific data.
+pid_t GetTID() {
+  absl::call_once(tid_once, InitGetTID);
+
+  intptr_t tid = reinterpret_cast<intptr_t>(pthread_getspecific(tid_key));
+  if (tid != 0) {
+    return tid;
+  }
+
+  int bit;  // tid_array[word] = 1u << bit;
+  size_t word;
+  {
+    // Search for the first unused ID.
+    absl::base_internal::SpinLockHolder lock(&tid_lock);
+    // First search for a word in the array that is not all ones.
+    word = 0;
+    while (word < tid_array->size() && ~(*tid_array)[word] == 0) {
+      ++word;
+    }
+    if (word == tid_array->size()) {
+      tid_array->push_back(0);  // No space left, add kBitsPerWord more IDs.
+    }
+    // Search for a zero bit in the word.
+    bit = 0;
+    while (bit < kBitsPerWord && (((*tid_array)[word] >> bit) & 1) != 0) {
+      ++bit;
+    }
+    tid = (word * kBitsPerWord) + bit;
+    (*tid_array)[word] |= 1u << bit;  // Mark the TID as allocated.
+  }
+
+  if (pthread_setspecific(tid_key, reinterpret_cast<void *>(tid)) != 0) {
+    perror("pthread_setspecific failed");
+    abort();
+  }
+
+  return static_cast<pid_t>(tid);
+}
+
+#endif
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.h b/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.h
new file mode 100644
index 0000000..7246d5d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/sysinfo.h	
@@ -0,0 +1,66 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file includes routines to find out characteristics
+// of the machine a program is running on.  It is undoubtedly
+// system-dependent.
+
+// Functions listed here that accept a pid_t as an argument act on the
+// current process if the pid_t argument is 0
+// All functions here are thread-hostile due to file caching unless
+// commented otherwise.
+
+#ifndef ABSL_BASE_INTERNAL_SYSINFO_H_
+#define ABSL_BASE_INTERNAL_SYSINFO_H_
+
+#ifndef _WIN32
+#include <sys/types.h>
+#endif
+
+#include <cstdint>
+
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Nominal core processor cycles per second of each processor.   This is _not_
+// necessarily the frequency of the CycleClock counter (see cycleclock.h)
+// Thread-safe.
+double NominalCPUFrequency();
+
+// Number of logical processors (hyperthreads) in system. Thread-safe.
+int NumCPUs();
+
+// Return the thread id of the current thread, as told by the system.
+// No two currently-live threads implemented by the OS shall have the same ID.
+// Thread ids of exited threads may be reused.   Multiple user-level threads
+// may have the same thread ID if multiplexed on the same OS thread.
+//
+// On Linux, you may send a signal to the resulting ID with kill().  However,
+// it is recommended for portability that you use pthread_kill() instead.
+#ifdef _WIN32
+// On Windows, process id and thread id are of the same type according to the
+// return types of GetProcessId() and GetThreadId() are both DWORD, an unsigned
+// 32-bit type.
+using pid_t = uint32_t;
+#endif
+pid_t GetTID();
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_SYSINFO_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/thread_annotations.h b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_annotations.h
new file mode 100644
index 0000000..4dab6a9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_annotations.h	
@@ -0,0 +1,271 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: thread_annotations.h
+// -----------------------------------------------------------------------------
+//
+// WARNING: This is a backwards compatible header and it will be removed after
+// the migration to prefixed thread annotations is finished; please include
+// "absl/base/thread_annotations.h".
+//
+// This header file contains macro definitions for thread safety annotations
+// that allow developers to document the locking policies of multi-threaded
+// code. The annotations can also help program analysis tools to identify
+// potential thread safety issues.
+//
+// These annotations are implemented using compiler attributes. Using the macros
+// defined here instead of raw attributes allow for portability and future
+// compatibility.
+//
+// When referring to mutexes in the arguments of the attributes, you should
+// use variable names or more complex expressions (e.g. my_object->mutex_)
+// that evaluate to a concrete mutex object whenever possible. If the mutex
+// you want to refer to is not in scope, you may use a member pointer
+// (e.g. &MyClass::mutex_) to refer to a mutex in some (unknown) object.
+
+#ifndef ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
+#define ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
+
+#if defined(__clang__)
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x))
+#else
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op
+#endif
+
+// GUARDED_BY()
+//
+// Documents if a shared field or global variable needs to be protected by a
+// mutex. GUARDED_BY() allows the user to specify a particular mutex that
+// should be held when accessing the annotated variable.
+//
+// Although this annotation (and PT_GUARDED_BY, below) cannot be applied to
+// local variables, a local variable and its associated mutex can often be
+// combined into a small class or struct, thereby allowing the annotation.
+//
+// Example:
+//
+//   class Foo {
+//     Mutex mu_;
+//     int p1_ GUARDED_BY(mu_);
+//     ...
+//   };
+#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+// PT_GUARDED_BY()
+//
+// Documents if the memory location pointed to by a pointer should be guarded
+// by a mutex when dereferencing the pointer.
+//
+// Example:
+//   class Foo {
+//     Mutex mu_;
+//     int *p1_ PT_GUARDED_BY(mu_);
+//     ...
+//   };
+//
+// Note that a pointer variable to a shared memory location could itself be a
+// shared variable.
+//
+// Example:
+//
+//   // `q_`, guarded by `mu1_`, points to a shared memory location that is
+//   // guarded by `mu2_`:
+//   int *q_ GUARDED_BY(mu1_) PT_GUARDED_BY(mu2_);
+#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+
+// ACQUIRED_AFTER() / ACQUIRED_BEFORE()
+//
+// Documents the acquisition order between locks that can be held
+// simultaneously by a thread. For any two locks that need to be annotated
+// to establish an acquisition order, only one of them needs the annotation.
+// (i.e. You don't have to annotate both locks with both ACQUIRED_AFTER
+// and ACQUIRED_BEFORE.)
+//
+// As with GUARDED_BY, this is only applicable to mutexes that are shared
+// fields or global variables.
+//
+// Example:
+//
+//   Mutex m1_;
+//   Mutex m2_ ACQUIRED_AFTER(m1_);
+#define ACQUIRED_AFTER(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+
+#define ACQUIRED_BEFORE(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+
+// EXCLUSIVE_LOCKS_REQUIRED() / SHARED_LOCKS_REQUIRED()
+//
+// Documents a function that expects a mutex to be held prior to entry.
+// The mutex is expected to be held both on entry to, and exit from, the
+// function.
+//
+// An exclusive lock allows read-write access to the guarded data member(s), and
+// only one thread can acquire a lock exclusively at any one time. A shared lock
+// allows read-only access, and any number of threads can acquire a shared lock
+// concurrently.
+//
+// Generally, non-const methods should be annotated with
+// EXCLUSIVE_LOCKS_REQUIRED, while const methods should be annotated with
+// SHARED_LOCKS_REQUIRED.
+//
+// Example:
+//
+//   Mutex mu1, mu2;
+//   int a GUARDED_BY(mu1);
+//   int b GUARDED_BY(mu2);
+//
+//   void foo() EXCLUSIVE_LOCKS_REQUIRED(mu1, mu2) { ... }
+//   void bar() const SHARED_LOCKS_REQUIRED(mu1, mu2) { ... }
+#define EXCLUSIVE_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+
+#define SHARED_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+
+// LOCKS_EXCLUDED()
+//
+// Documents the locks acquired in the body of the function. These locks
+// cannot be held when calling this function (as Abseil's `Mutex` locks are
+// non-reentrant).
+#define LOCKS_EXCLUDED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+// LOCK_RETURNED()
+//
+// Documents a function that returns a mutex without acquiring it.  For example,
+// a public getter method that returns a pointer to a private mutex should
+// be annotated with LOCK_RETURNED.
+#define LOCK_RETURNED(x) \
+  THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+// LOCKABLE
+//
+// Documents if a class/type is a lockable type (such as the `Mutex` class).
+#define LOCKABLE \
+  THREAD_ANNOTATION_ATTRIBUTE__(lockable)
+
+// SCOPED_LOCKABLE
+//
+// Documents if a class does RAII locking (such as the `MutexLock` class).
+// The constructor should use `LOCK_FUNCTION()` to specify the mutex that is
+// acquired, and the destructor should use `UNLOCK_FUNCTION()` with no
+// arguments; the analysis will assume that the destructor unlocks whatever the
+// constructor locked.
+#define SCOPED_LOCKABLE \
+  THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+// EXCLUSIVE_LOCK_FUNCTION()
+//
+// Documents functions that acquire a lock in the body of a function, and do
+// not release it.
+#define EXCLUSIVE_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+
+// SHARED_LOCK_FUNCTION()
+//
+// Documents functions that acquire a shared (reader) lock in the body of a
+// function, and do not release it.
+#define SHARED_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+
+// UNLOCK_FUNCTION()
+//
+// Documents functions that expect a lock to be held on entry to the function,
+// and release it in the body of the function.
+#define UNLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+
+// EXCLUSIVE_TRYLOCK_FUNCTION() / SHARED_TRYLOCK_FUNCTION()
+//
+// Documents functions that try to acquire a lock, and return success or failure
+// (or a non-boolean value that can be interpreted as a boolean).
+// The first argument should be `true` for functions that return `true` on
+// success, or `false` for functions that return `false` on success. The second
+// argument specifies the mutex that is locked on success. If unspecified, this
+// mutex is assumed to be `this`.
+#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+
+#define SHARED_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+
+// ASSERT_EXCLUSIVE_LOCK() / ASSERT_SHARED_LOCK()
+//
+// Documents functions that dynamically check to see if a lock is held, and fail
+// if it is not held.
+#define ASSERT_EXCLUSIVE_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
+
+#define ASSERT_SHARED_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
+
+// NO_THREAD_SAFETY_ANALYSIS
+//
+// Turns off thread safety checking within the body of a particular function.
+// This annotation is used to mark functions that are known to be correct, but
+// the locking behavior is more complicated than the analyzer can handle.
+#define NO_THREAD_SAFETY_ANALYSIS \
+  THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+//------------------------------------------------------------------------------
+// Tool-Supplied Annotations
+//------------------------------------------------------------------------------
+
+// TS_UNCHECKED should be placed around lock expressions that are not valid
+// C++ syntax, but which are present for documentation purposes.  These
+// annotations will be ignored by the analysis.
+#define TS_UNCHECKED(x) ""
+
+// TS_FIXME is used to mark lock expressions that are not valid C++ syntax.
+// It is used by automated tools to mark and disable invalid expressions.
+// The annotation should either be fixed, or changed to TS_UNCHECKED.
+#define TS_FIXME(x) ""
+
+// Like NO_THREAD_SAFETY_ANALYSIS, this turns off checking within the body of
+// a particular function.  However, this attribute is used to mark functions
+// that are incorrect and need to be fixed.  It is used by automated tools to
+// avoid breaking the build when the analysis is updated.
+// Code owners are expected to eventually fix the routine.
+#define NO_THREAD_SAFETY_ANALYSIS_FIXME  NO_THREAD_SAFETY_ANALYSIS
+
+// Similar to NO_THREAD_SAFETY_ANALYSIS_FIXME, this macro marks a GUARDED_BY
+// annotation that needs to be fixed, because it is producing thread safety
+// warning.  It disables the GUARDED_BY.
+#define GUARDED_BY_FIXME(x)
+
+// Disables warnings for a single read operation.  This can be used to avoid
+// warnings when it is known that the read is not actually involved in a race,
+// but the compiler cannot confirm that.
+#define TS_UNCHECKED_READ(x) thread_safety_analysis::ts_unchecked_read(x)
+
+
+namespace thread_safety_analysis {
+
+// Takes a reference to a guarded data member, and returns an unguarded
+// reference.
+template <typename T>
+inline const T& ts_unchecked_read(const T& v) NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+template <typename T>
+inline T& ts_unchecked_read(T& v) NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+}  // namespace thread_safety_analysis
+
+#endif  // ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.cc
new file mode 100644
index 0000000..d63a04a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.cc	
@@ -0,0 +1,152 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/thread_identity.h"
+
+#ifndef _WIN32
+#include <pthread.h>
+#include <signal.h>
+#endif
+
+#include <atomic>
+#include <cassert>
+#include <memory>
+
+#include "absl/base/call_once.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+#if ABSL_THREAD_IDENTITY_MODE != ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+namespace {
+// Used to co-ordinate one-time creation of our pthread_key
+absl::once_flag init_thread_identity_key_once;
+pthread_key_t thread_identity_pthread_key;
+std::atomic<bool> pthread_key_initialized(false);
+
+void AllocateThreadIdentityKey(ThreadIdentityReclaimerFunction reclaimer) {
+  pthread_key_create(&thread_identity_pthread_key, reclaimer);
+  pthread_key_initialized.store(true, std::memory_order_release);
+}
+}  // namespace
+#endif
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+// The actual TLS storage for a thread's currently associated ThreadIdentity.
+// This is referenced by inline accessors in the header.
+// "protected" visibility ensures that if multiple instances of Abseil code
+// exist within a process (via dlopen() or similar), references to
+// thread_identity_ptr from each instance of the code will refer to
+// *different* instances of this ptr.
+#ifdef __GNUC__
+__attribute__((visibility("protected")))
+#endif  // __GNUC__
+#if ABSL_PER_THREAD_TLS
+// Prefer __thread to thread_local as benchmarks indicate it is a bit faster.
+ABSL_PER_THREAD_TLS_KEYWORD ThreadIdentity* thread_identity_ptr = nullptr;
+#elif defined(ABSL_HAVE_THREAD_LOCAL)
+thread_local ThreadIdentity* thread_identity_ptr = nullptr;
+#endif  // ABSL_PER_THREAD_TLS
+#endif  // TLS or CPP11
+
+void SetCurrentThreadIdentity(
+    ThreadIdentity* identity, ThreadIdentityReclaimerFunction reclaimer) {
+  assert(CurrentThreadIdentityIfPresent() == nullptr);
+  // Associate our destructor.
+  // NOTE: This call to pthread_setspecific is currently the only immovable
+  // barrier to CurrentThreadIdentity() always being async signal safe.
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+  // NOTE: Not async-safe.  But can be open-coded.
+  absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey,
+                  reclaimer);
+
+#if defined(__EMSCRIPTEN__) || defined(__MINGW32__)
+  // Emscripten and MinGW pthread implementations does not support signals.
+  // See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html
+  // for more information.
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+#else
+  // We must mask signals around the call to setspecific as with current glibc,
+  // a concurrent getspecific (needed for GetCurrentThreadIdentityIfPresent())
+  // may zero our value.
+  //
+  // While not officially async-signal safe, getspecific within a signal handler
+  // is otherwise OK.
+  sigset_t all_signals;
+  sigset_t curr_signals;
+  sigfillset(&all_signals);
+  pthread_sigmask(SIG_SETMASK, &all_signals, &curr_signals);
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+  pthread_sigmask(SIG_SETMASK, &curr_signals, nullptr);
+#endif  // !__EMSCRIPTEN__ && !__MINGW32__
+
+#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS
+  // NOTE: Not async-safe.  But can be open-coded.
+  absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey,
+                  reclaimer);
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+  thread_identity_ptr = identity;
+#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+  thread_local std::unique_ptr<ThreadIdentity, ThreadIdentityReclaimerFunction>
+      holder(identity, reclaimer);
+  thread_identity_ptr = identity;
+#else
+#error Unimplemented ABSL_THREAD_IDENTITY_MODE
+#endif
+}
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+
+// Please see the comment on `CurrentThreadIdentityIfPresent` in
+// thread_identity.h. Because DLLs cannot expose thread_local variables in
+// headers, we opt for the correct-but-slower option of placing the definition
+// of this function only in a translation unit inside DLL.
+#if defined(ABSL_BUILD_DLL) || defined(ABSL_CONSUME_DLL)
+ThreadIdentity* CurrentThreadIdentityIfPresent() { return thread_identity_ptr; }
+#endif
+#endif
+
+void ClearCurrentThreadIdentity() {
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+  thread_identity_ptr = nullptr;
+#elif ABSL_THREAD_IDENTITY_MODE == \
+      ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+  // pthread_setspecific expected to clear value on destruction
+  assert(CurrentThreadIdentityIfPresent() == nullptr);
+#endif
+}
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+ThreadIdentity* CurrentThreadIdentityIfPresent() {
+  bool initialized = pthread_key_initialized.load(std::memory_order_acquire);
+  if (!initialized) {
+    return nullptr;
+  }
+  return reinterpret_cast<ThreadIdentity*>(
+      pthread_getspecific(thread_identity_pthread_key));
+}
+#endif
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.h b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.h
new file mode 100644
index 0000000..ceb109b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/thread_identity.h	
@@ -0,0 +1,259 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Each active thread has an ThreadIdentity that may represent the thread in
+// various level interfaces.  ThreadIdentity objects are never deallocated.
+// When a thread terminates, its ThreadIdentity object may be reused for a
+// thread created later.
+
+#ifndef ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
+#define ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
+
+#ifndef _WIN32
+#include <pthread.h>
+// Defines __GOOGLE_GRTE_VERSION__ (via glibc-specific features.h) when
+// supported.
+#include <unistd.h>
+#endif
+
+#include <atomic>
+#include <cstdint>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/per_thread_tls.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+struct SynchLocksHeld;
+struct SynchWaitParams;
+
+namespace base_internal {
+
+class SpinLock;
+struct ThreadIdentity;
+
+// Used by the implementation of absl::Mutex and absl::CondVar.
+struct PerThreadSynch {
+  // The internal representation of absl::Mutex and absl::CondVar rely
+  // on the alignment of PerThreadSynch. Both store the address of the
+  // PerThreadSynch in the high-order bits of their internal state,
+  // which means the low kLowZeroBits of the address of PerThreadSynch
+  // must be zero.
+  static constexpr int kLowZeroBits = 8;
+  static constexpr int kAlignment = 1 << kLowZeroBits;
+
+  // Returns the associated ThreadIdentity.
+  // This can be implemented as a cast because we guarantee
+  // PerThreadSynch is the first element of ThreadIdentity.
+  ThreadIdentity* thread_identity() {
+    return reinterpret_cast<ThreadIdentity*>(this);
+  }
+
+  PerThreadSynch *next;  // Circular waiter queue; initialized to 0.
+  PerThreadSynch *skip;  // If non-zero, all entries in Mutex queue
+                         // up to and including "skip" have same
+                         // condition as this, and will be woken later
+  bool may_skip;         // if false while on mutex queue, a mutex unlocker
+                         // is using this PerThreadSynch as a terminator.  Its
+                         // skip field must not be filled in because the loop
+                         // might then skip over the terminator.
+
+  // The wait parameters of the current wait.  waitp is null if the
+  // thread is not waiting. Transitions from null to non-null must
+  // occur before the enqueue commit point (state = kQueued in
+  // Enqueue() and CondVarEnqueue()). Transitions from non-null to
+  // null must occur after the wait is finished (state = kAvailable in
+  // Mutex::Block() and CondVar::WaitCommon()). This field may be
+  // changed only by the thread that describes this PerThreadSynch.  A
+  // special case is Fer(), which calls Enqueue() on another thread,
+  // but with an identical SynchWaitParams pointer, thus leaving the
+  // pointer unchanged.
+  SynchWaitParams *waitp;
+
+  bool suppress_fatal_errors;  // If true, try to proceed even in the face of
+                               // broken invariants.  This is used within fatal
+                               // signal handlers to improve the chances of
+                               // debug logging information being output
+                               // successfully.
+
+  intptr_t readers;     // Number of readers in mutex.
+  int priority;         // Priority of thread (updated every so often).
+
+  // When priority will next be read (cycles).
+  int64_t next_priority_read_cycles;
+
+  // State values:
+  //   kAvailable: This PerThreadSynch is available.
+  //   kQueued: This PerThreadSynch is unavailable, it's currently queued on a
+  //            Mutex or CondVar waistlist.
+  //
+  // Transitions from kQueued to kAvailable require a release
+  // barrier. This is needed as a waiter may use "state" to
+  // independently observe that it's no longer queued.
+  //
+  // Transitions from kAvailable to kQueued require no barrier, they
+  // are externally ordered by the Mutex.
+  enum State {
+    kAvailable,
+    kQueued
+  };
+  std::atomic<State> state;
+
+  bool maybe_unlocking;  // Valid at head of Mutex waiter queue;
+                         // true if UnlockSlow could be searching
+                         // for a waiter to wake.  Used for an optimization
+                         // in Enqueue().  true is always a valid value.
+                         // Can be reset to false when the unlocker or any
+                         // writer releases the lock, or a reader fully releases
+                         // the lock.  It may not be set to false by a reader
+                         // that decrements the count to non-zero.
+                         // protected by mutex spinlock
+
+  bool wake;  // This thread is to be woken from a Mutex.
+
+  // If "x" is on a waiter list for a mutex, "x->cond_waiter" is true iff the
+  // waiter is waiting on the mutex as part of a CV Wait or Mutex Await.
+  //
+  // The value of "x->cond_waiter" is meaningless if "x" is not on a
+  // Mutex waiter list.
+  bool cond_waiter;
+
+  // Locks held; used during deadlock detection.
+  // Allocated in Synch_GetAllLocks() and freed in ReclaimThreadIdentity().
+  SynchLocksHeld *all_locks;
+};
+
+struct ThreadIdentity {
+  // Must be the first member.  The Mutex implementation requires that
+  // the PerThreadSynch object associated with each thread is
+  // PerThreadSynch::kAlignment aligned.  We provide this alignment on
+  // ThreadIdentity itself.
+  PerThreadSynch per_thread_synch;
+
+  // Private: Reserved for absl::synchronization_internal::Waiter.
+  struct WaiterState {
+    char data[128];
+  } waiter_state;
+
+  // Used by PerThreadSem::{Get,Set}ThreadBlockedCounter().
+  std::atomic<int>* blocked_count_ptr;
+
+  // The following variables are mostly read/written just by the
+  // thread itself.  The only exception is that these are read by
+  // a ticker thread as a hint.
+  std::atomic<int> ticker;      // Tick counter, incremented once per second.
+  std::atomic<int> wait_start;  // Ticker value when thread started waiting.
+  std::atomic<bool> is_idle;    // Has thread become idle yet?
+
+  ThreadIdentity* next;
+};
+
+// Returns the ThreadIdentity object representing the calling thread; guaranteed
+// to be unique for its lifetime.  The returned object will remain valid for the
+// program's lifetime; although it may be re-assigned to a subsequent thread.
+// If one does not exist, return nullptr instead.
+//
+// Does not malloc(*), and is async-signal safe.
+// [*] Technically pthread_setspecific() does malloc on first use; however this
+// is handled internally within tcmalloc's initialization already.
+//
+// New ThreadIdentity objects can be constructed and associated with a thread
+// by calling GetOrCreateCurrentThreadIdentity() in per-thread-sem.h.
+ThreadIdentity* CurrentThreadIdentityIfPresent();
+
+using ThreadIdentityReclaimerFunction = void (*)(void*);
+
+// Sets the current thread identity to the given value.  'reclaimer' is a
+// pointer to the global function for cleaning up instances on thread
+// destruction.
+void SetCurrentThreadIdentity(ThreadIdentity* identity,
+                              ThreadIdentityReclaimerFunction reclaimer);
+
+// Removes the currently associated ThreadIdentity from the running thread.
+// This must be called from inside the ThreadIdentityReclaimerFunction, and only
+// from that function.
+void ClearCurrentThreadIdentity();
+
+// May be chosen at compile time via: -DABSL_FORCE_THREAD_IDENTITY_MODE=<mode
+// index>
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+#error ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC cannot be direcly set
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 0
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_TLS
+#error ABSL_THREAD_IDENTITY_MODE_USE_TLS cannot be direcly set
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_TLS 1
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+#error ABSL_THREAD_IDENTITY_MODE_USE_CPP11 cannot be direcly set
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_CPP11 2
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE
+#error ABSL_THREAD_IDENTITY_MODE cannot be direcly set
+#elif defined(ABSL_FORCE_THREAD_IDENTITY_MODE)
+#define ABSL_THREAD_IDENTITY_MODE ABSL_FORCE_THREAD_IDENTITY_MODE
+#elif defined(_WIN32) && !defined(__MINGW32__)
+#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+#elif ABSL_PER_THREAD_TLS && defined(__GOOGLE_GRTE_VERSION__) && \
+    (__GOOGLE_GRTE_VERSION__ >= 20140228L)
+// Support for async-safe TLS was specifically added in GRTEv4.  It's not
+// present in the upstream eglibc.
+// Note:  Current default for production systems.
+#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_TLS
+#else
+#define ABSL_THREAD_IDENTITY_MODE \
+  ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+#endif
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+
+#if ABSL_PER_THREAD_TLS
+ABSL_CONST_INIT extern ABSL_PER_THREAD_TLS_KEYWORD ThreadIdentity*
+    thread_identity_ptr;
+#elif defined(ABSL_HAVE_THREAD_LOCAL)
+ABSL_CONST_INIT extern thread_local ThreadIdentity* thread_identity_ptr;
+#else
+#error Thread-local storage not detected on this platform
+#endif
+
+// thread_local variables cannot be in headers exposed by DLLs. However, it is
+// important for performance reasons in general that
+// `CurrentThreadIdentityIfPresent` be inlined. This is not possible across a
+// DLL boundary so, with DLLs, we opt to have the function not be inlined. Note
+// that `CurrentThreadIdentityIfPresent` is declared above so we can exclude
+// this entire inline definition when compiling as a DLL.
+#if !defined(ABSL_BUILD_DLL) && !defined(ABSL_CONSUME_DLL)
+inline ThreadIdentity* CurrentThreadIdentityIfPresent() {
+  return thread_identity_ptr;
+}
+#endif
+
+#elif ABSL_THREAD_IDENTITY_MODE != \
+    ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+#error Unknown ABSL_THREAD_IDENTITY_MODE
+#endif
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.cc
new file mode 100644
index 0000000..c055f75
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.cc	
@@ -0,0 +1,108 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/throw_delegate.h"
+
+#include <cstdlib>
+#include <functional>
+#include <new>
+#include <stdexcept>
+#include "absl/base/config.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+namespace {
+template <typename T>
+[[noreturn]] void Throw(const T& error) {
+#ifdef ABSL_HAVE_EXCEPTIONS
+  throw error;
+#else
+  ABSL_RAW_LOG(FATAL, "%s", error.what());
+  std::abort();
+#endif
+}
+}  // namespace
+
+void ThrowStdLogicError(const std::string& what_arg) {
+  Throw(std::logic_error(what_arg));
+}
+void ThrowStdLogicError(const char* what_arg) {
+  Throw(std::logic_error(what_arg));
+}
+void ThrowStdInvalidArgument(const std::string& what_arg) {
+  Throw(std::invalid_argument(what_arg));
+}
+void ThrowStdInvalidArgument(const char* what_arg) {
+  Throw(std::invalid_argument(what_arg));
+}
+
+void ThrowStdDomainError(const std::string& what_arg) {
+  Throw(std::domain_error(what_arg));
+}
+void ThrowStdDomainError(const char* what_arg) {
+  Throw(std::domain_error(what_arg));
+}
+
+void ThrowStdLengthError(const std::string& what_arg) {
+  Throw(std::length_error(what_arg));
+}
+void ThrowStdLengthError(const char* what_arg) {
+  Throw(std::length_error(what_arg));
+}
+
+void ThrowStdOutOfRange(const std::string& what_arg) {
+  Throw(std::out_of_range(what_arg));
+}
+void ThrowStdOutOfRange(const char* what_arg) {
+  Throw(std::out_of_range(what_arg));
+}
+
+void ThrowStdRuntimeError(const std::string& what_arg) {
+  Throw(std::runtime_error(what_arg));
+}
+void ThrowStdRuntimeError(const char* what_arg) {
+  Throw(std::runtime_error(what_arg));
+}
+
+void ThrowStdRangeError(const std::string& what_arg) {
+  Throw(std::range_error(what_arg));
+}
+void ThrowStdRangeError(const char* what_arg) {
+  Throw(std::range_error(what_arg));
+}
+
+void ThrowStdOverflowError(const std::string& what_arg) {
+  Throw(std::overflow_error(what_arg));
+}
+void ThrowStdOverflowError(const char* what_arg) {
+  Throw(std::overflow_error(what_arg));
+}
+
+void ThrowStdUnderflowError(const std::string& what_arg) {
+  Throw(std::underflow_error(what_arg));
+}
+void ThrowStdUnderflowError(const char* what_arg) {
+  Throw(std::underflow_error(what_arg));
+}
+
+void ThrowStdBadFunctionCall() { Throw(std::bad_function_call()); }
+
+void ThrowStdBadAlloc() { Throw(std::bad_alloc()); }
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.h b/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.h
new file mode 100644
index 0000000..075f527
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/throw_delegate.h	
@@ -0,0 +1,75 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
+#define ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
+
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Helper functions that allow throwing exceptions consistently from anywhere.
+// The main use case is for header-based libraries (eg templates), as they will
+// be built by many different targets with their own compiler options.
+// In particular, this will allow a safe way to throw exceptions even if the
+// caller is compiled with -fno-exceptions.  This is intended for implementing
+// things like map<>::at(), which the standard documents as throwing an
+// exception on error.
+//
+// Using other techniques like #if tricks could lead to ODR violations.
+//
+// You shouldn't use it unless you're writing code that you know will be built
+// both with and without exceptions and you need to conform to an interface
+// that uses exceptions.
+
+[[noreturn]] void ThrowStdLogicError(const std::string& what_arg);
+[[noreturn]] void ThrowStdLogicError(const char* what_arg);
+[[noreturn]] void ThrowStdInvalidArgument(const std::string& what_arg);
+[[noreturn]] void ThrowStdInvalidArgument(const char* what_arg);
+[[noreturn]] void ThrowStdDomainError(const std::string& what_arg);
+[[noreturn]] void ThrowStdDomainError(const char* what_arg);
+[[noreturn]] void ThrowStdLengthError(const std::string& what_arg);
+[[noreturn]] void ThrowStdLengthError(const char* what_arg);
+[[noreturn]] void ThrowStdOutOfRange(const std::string& what_arg);
+[[noreturn]] void ThrowStdOutOfRange(const char* what_arg);
+[[noreturn]] void ThrowStdRuntimeError(const std::string& what_arg);
+[[noreturn]] void ThrowStdRuntimeError(const char* what_arg);
+[[noreturn]] void ThrowStdRangeError(const std::string& what_arg);
+[[noreturn]] void ThrowStdRangeError(const char* what_arg);
+[[noreturn]] void ThrowStdOverflowError(const std::string& what_arg);
+[[noreturn]] void ThrowStdOverflowError(const char* what_arg);
+[[noreturn]] void ThrowStdUnderflowError(const std::string& what_arg);
+[[noreturn]] void ThrowStdUnderflowError(const char* what_arg);
+
+[[noreturn]] void ThrowStdBadFunctionCall();
+[[noreturn]] void ThrowStdBadAlloc();
+
+// ThrowStdBadArrayNewLength() cannot be consistently supported because
+// std::bad_array_new_length is missing in libstdc++ until 4.9.0.
+// https://gcc.gnu.org/onlinedocs/gcc-4.8.3/libstdc++/api/a01379_source.html
+// https://gcc.gnu.org/onlinedocs/gcc-4.9.0/libstdc++/api/a01327_source.html
+// libcxx (as of 3.2) and msvc (as of 2015) both have it.
+// [[noreturn]] void ThrowStdBadArrayNewLength();
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/tsan_mutex_interface.h b/ChattingApp 000/Pods/abseil/absl/base/internal/tsan_mutex_interface.h
new file mode 100644
index 0000000..2a51060
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/tsan_mutex_interface.h	
@@ -0,0 +1,66 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is intended solely for spinlock.h.
+// It provides ThreadSanitizer annotations for custom mutexes.
+// See <sanitizer/tsan_interface.h> for meaning of these annotations.
+
+#ifndef ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
+#define ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
+
+// ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+// Macro intended only for internal use.
+//
+// Checks whether LLVM Thread Sanitizer interfaces are available.
+// First made available in LLVM 5.0 (Sep 2017).
+#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+#error "ABSL_INTERNAL_HAVE_TSAN_INTERFACE cannot be directly set."
+#endif
+
+#if defined(THREAD_SANITIZER) && defined(__has_include)
+#if __has_include(<sanitizer/tsan_interface.h>)
+#define ABSL_INTERNAL_HAVE_TSAN_INTERFACE 1
+#endif
+#endif
+
+#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+#include <sanitizer/tsan_interface.h>
+
+#define ABSL_TSAN_MUTEX_CREATE __tsan_mutex_create
+#define ABSL_TSAN_MUTEX_DESTROY __tsan_mutex_destroy
+#define ABSL_TSAN_MUTEX_PRE_LOCK __tsan_mutex_pre_lock
+#define ABSL_TSAN_MUTEX_POST_LOCK __tsan_mutex_post_lock
+#define ABSL_TSAN_MUTEX_PRE_UNLOCK __tsan_mutex_pre_unlock
+#define ABSL_TSAN_MUTEX_POST_UNLOCK __tsan_mutex_post_unlock
+#define ABSL_TSAN_MUTEX_PRE_SIGNAL __tsan_mutex_pre_signal
+#define ABSL_TSAN_MUTEX_POST_SIGNAL __tsan_mutex_post_signal
+#define ABSL_TSAN_MUTEX_PRE_DIVERT __tsan_mutex_pre_divert
+#define ABSL_TSAN_MUTEX_POST_DIVERT __tsan_mutex_post_divert
+
+#else
+
+#define ABSL_TSAN_MUTEX_CREATE(...)
+#define ABSL_TSAN_MUTEX_DESTROY(...)
+#define ABSL_TSAN_MUTEX_PRE_LOCK(...)
+#define ABSL_TSAN_MUTEX_POST_LOCK(...)
+#define ABSL_TSAN_MUTEX_PRE_UNLOCK(...)
+#define ABSL_TSAN_MUTEX_POST_UNLOCK(...)
+#define ABSL_TSAN_MUTEX_PRE_SIGNAL(...)
+#define ABSL_TSAN_MUTEX_POST_SIGNAL(...)
+#define ABSL_TSAN_MUTEX_PRE_DIVERT(...)
+#define ABSL_TSAN_MUTEX_POST_DIVERT(...)
+
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/unaligned_access.h b/ChattingApp 000/Pods/abseil/absl/base/internal/unaligned_access.h
new file mode 100644
index 0000000..6be56c8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/unaligned_access.h	
@@ -0,0 +1,158 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
+#define ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
+
+#include <string.h>
+
+#include <cstdint>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+
+// unaligned APIs
+
+// Portable handling of unaligned loads, stores, and copies.
+
+// The unaligned API is C++ only.  The declarations use C++ features
+// (namespaces, inline) which are absent or incompatible in C.
+#if defined(__cplusplus)
+
+#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) ||\
+    defined(MEMORY_SANITIZER)
+// Consider we have an unaligned load/store of 4 bytes from address 0x...05.
+// AddressSanitizer will treat it as a 3-byte access to the range 05:07 and
+// will miss a bug if 08 is the first unaddressable byte.
+// ThreadSanitizer will also treat this as a 3-byte access to 05:07 and will
+// miss a race between this access and some other accesses to 08.
+// MemorySanitizer will correctly propagate the shadow on unaligned stores
+// and correctly report bugs on unaligned loads, but it may not properly
+// update and report the origin of the uninitialized memory.
+// For all three tools, replacing an unaligned access with a tool-specific
+// callback solves the problem.
+
+// Make sure uint16_t/uint32_t/uint64_t are defined.
+#include <stdint.h>
+
+extern "C" {
+uint16_t __sanitizer_unaligned_load16(const void *p);
+uint32_t __sanitizer_unaligned_load32(const void *p);
+uint64_t __sanitizer_unaligned_load64(const void *p);
+void __sanitizer_unaligned_store16(void *p, uint16_t v);
+void __sanitizer_unaligned_store32(void *p, uint32_t v);
+void __sanitizer_unaligned_store64(void *p, uint64_t v);
+}  // extern "C"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+inline uint16_t UnalignedLoad16(const void *p) {
+  return __sanitizer_unaligned_load16(p);
+}
+
+inline uint32_t UnalignedLoad32(const void *p) {
+  return __sanitizer_unaligned_load32(p);
+}
+
+inline uint64_t UnalignedLoad64(const void *p) {
+  return __sanitizer_unaligned_load64(p);
+}
+
+inline void UnalignedStore16(void *p, uint16_t v) {
+  __sanitizer_unaligned_store16(p, v);
+}
+
+inline void UnalignedStore32(void *p, uint32_t v) {
+  __sanitizer_unaligned_store32(p, v);
+}
+
+inline void UnalignedStore64(void *p, uint64_t v) {
+  __sanitizer_unaligned_store64(p, v);
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+  (absl::base_internal::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+  (absl::base_internal::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+  (absl::base_internal::UnalignedLoad64(_p))
+
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
+  (absl::base_internal::UnalignedStore16(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
+  (absl::base_internal::UnalignedStore32(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
+  (absl::base_internal::UnalignedStore64(_p, _val))
+
+#else
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+inline uint16_t UnalignedLoad16(const void *p) {
+  uint16_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint32_t UnalignedLoad32(const void *p) {
+  uint32_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint64_t UnalignedLoad64(const void *p) {
+  uint64_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline void UnalignedStore16(void *p, uint16_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
+  (absl::base_internal::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
+  (absl::base_internal::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
+  (absl::base_internal::UnalignedLoad64(_p))
+
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
+  (absl::base_internal::UnalignedStore16(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
+  (absl::base_internal::UnalignedStore32(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
+  (absl::base_internal::UnalignedStore64(_p, _val))
+
+#endif
+
+#endif  // defined(__cplusplus), end of unaligned API
+
+#endif  // ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.cc b/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.cc
new file mode 100644
index 0000000..f1e7bbe
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.cc	
@@ -0,0 +1,140 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/internal/unscaledcycleclock.h"
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+#if defined(_WIN32)
+#include <intrin.h>
+#endif
+
+#if defined(__powerpc__) || defined(__ppc__)
+#ifdef __GLIBC__
+#include <sys/platform/ppc.h>
+#elif defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#endif
+#endif
+
+#include "absl/base/internal/sysinfo.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+#if defined(__i386__)
+
+int64_t UnscaledCycleClock::Now() {
+  int64_t ret;
+  __asm__ volatile("rdtsc" : "=A"(ret));
+  return ret;
+}
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#elif defined(__x86_64__)
+
+int64_t UnscaledCycleClock::Now() {
+  uint64_t low, high;
+  __asm__ volatile("rdtsc" : "=a"(low), "=d"(high));
+  return (high << 32) | low;
+}
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#elif defined(__powerpc__) || defined(__ppc__)
+
+int64_t UnscaledCycleClock::Now() {
+#ifdef __GLIBC__
+  return __ppc_get_timebase();
+#else
+#ifdef __powerpc64__
+  int64_t tbr;
+  asm volatile("mfspr %0, 268" : "=r"(tbr));
+  return tbr;
+#else
+  int32_t tbu, tbl, tmp;
+  asm volatile(
+      "0:\n"
+      "mftbu %[hi32]\n"
+      "mftb %[lo32]\n"
+      "mftbu %[tmp]\n"
+      "cmpw %[tmp],%[hi32]\n"
+      "bne 0b\n"
+      : [ hi32 ] "=r"(tbu), [ lo32 ] "=r"(tbl), [ tmp ] "=r"(tmp));
+  return (static_cast<int64_t>(tbu) << 32) | tbl;
+#endif
+#endif
+}
+
+double UnscaledCycleClock::Frequency() {
+#ifdef __GLIBC__
+  return __ppc_get_timebase_freq();
+#elif defined(__FreeBSD__)
+  static once_flag init_timebase_frequency_once;
+  static double timebase_frequency = 0.0;
+  base_internal::LowLevelCallOnce(&init_timebase_frequency_once, [&]() {
+    size_t length = sizeof(timebase_frequency);
+    sysctlbyname("kern.timecounter.tc.timebase.frequency", &timebase_frequency,
+                 &length, nullptr, 0);
+  });
+  return timebase_frequency;
+#else
+#error Must implement UnscaledCycleClock::Frequency()
+#endif
+}
+
+#elif defined(__aarch64__)
+
+// System timer of ARMv8 runs at a different frequency than the CPU's.
+// The frequency is fixed, typically in the range 1-50MHz.  It can be
+// read at CNTFRQ special register.  We assume the OS has set up
+// the virtual timer properly.
+int64_t UnscaledCycleClock::Now() {
+  int64_t virtual_timer_value;
+  asm volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer_value));
+  return virtual_timer_value;
+}
+
+double UnscaledCycleClock::Frequency() {
+  uint64_t aarch64_timer_frequency;
+  asm volatile("mrs %0, cntfrq_el0" : "=r"(aarch64_timer_frequency));
+  return aarch64_timer_frequency;
+}
+
+#elif defined(_M_IX86) || defined(_M_X64)
+
+#pragma intrinsic(__rdtsc)
+
+int64_t UnscaledCycleClock::Now() {
+  return __rdtsc();
+}
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#endif
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USE_UNSCALED_CYCLECLOCK
diff --git a/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.h b/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.h
new file mode 100644
index 0000000..cdce9bf
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/internal/unscaledcycleclock.h	
@@ -0,0 +1,124 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// UnscaledCycleClock
+//    An UnscaledCycleClock yields the value and frequency of a cycle counter
+//    that increments at a rate that is approximately constant.
+//    This class is for internal / whitelisted use only, you should consider
+//    using CycleClock instead.
+//
+// Notes:
+// The cycle counter frequency is not necessarily the core clock frequency.
+// That is, CycleCounter cycles are not necessarily "CPU cycles".
+//
+// An arbitrary offset may have been added to the counter at power on.
+//
+// On some platforms, the rate and offset of the counter may differ
+// slightly when read from different CPUs of a multiprocessor.  Usually,
+// we try to ensure that the operating system adjusts values periodically
+// so that values agree approximately.   If you need stronger guarantees,
+// consider using alternate interfaces.
+//
+// The CPU is not required to maintain the ordering of a cycle counter read
+// with respect to surrounding instructions.
+
+#ifndef ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_
+#define ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_
+
+#include <cstdint>
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
+#include "absl/base/port.h"
+
+// The following platforms have an implementation of a hardware counter.
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
+  defined(__powerpc__) || defined(__ppc__) || \
+  defined(_M_IX86) || defined(_M_X64)
+#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1
+#else
+#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 0
+#endif
+
+// The following platforms often disable access to the hardware
+// counter (through a sandbox) even if the underlying hardware has a
+// usable counter. The CycleTimer interface also requires a *scaled*
+// CycleClock that runs at atleast 1 MHz. We've found some Android
+// ARM64 devices where this is not the case, so we disable it by
+// default on Android ARM64.
+#if defined(__native_client__) ||                      \
+    (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) || \
+    (defined(__ANDROID__) && defined(__aarch64__))
+#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 0
+#else
+#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 1
+#endif
+
+// UnscaledCycleClock is an optional internal feature.
+// Use "#if ABSL_USE_UNSCALED_CYCLECLOCK" to test for its presence.
+// Can be overridden at compile-time via -DABSL_USE_UNSCALED_CYCLECLOCK=0|1
+#if !defined(ABSL_USE_UNSCALED_CYCLECLOCK)
+#define ABSL_USE_UNSCALED_CYCLECLOCK               \
+  (ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION && \
+   ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT)
+#endif
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+// This macro can be used to test if UnscaledCycleClock::Frequency()
+// is NominalCPUFrequency() on a particular platform.
+#if  (defined(__i386__) || defined(__x86_64__) || \
+      defined(_M_IX86) || defined(_M_X64))
+#define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+class UnscaledCycleClockWrapperForGetCurrentTime;
+}  // namespace time_internal
+
+namespace base_internal {
+class CycleClock;
+class UnscaledCycleClockWrapperForInitializeFrequency;
+
+class UnscaledCycleClock {
+ private:
+  UnscaledCycleClock() = delete;
+
+  // Return the value of a cycle counter that counts at a rate that is
+  // approximately constant.
+  static int64_t Now();
+
+  // Return the how much UnscaledCycleClock::Now() increases per second.
+  // This is not necessarily the core CPU clock frequency.
+  // It may be the nominal value report by the kernel, rather than a measured
+  // value.
+  static double Frequency();
+
+  // Whitelisted friends.
+  friend class base_internal::CycleClock;
+  friend class time_internal::UnscaledCycleClockWrapperForGetCurrentTime;
+  friend class base_internal::UnscaledCycleClockWrapperForInitializeFrequency;
+};
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USE_UNSCALED_CYCLECLOCK
+
+#endif  // ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/log_severity.cc b/ChattingApp 000/Pods/abseil/absl/base/log_severity.cc
new file mode 100644
index 0000000..72312af
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/log_severity.cc	
@@ -0,0 +1,27 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/base/log_severity.h"
+
+#include <ostream>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+std::ostream& operator<<(std::ostream& os, absl::LogSeverity s) {
+  if (s == absl::NormalizeLogSeverity(s)) return os << absl::LogSeverityName(s);
+  return os << "absl::LogSeverity(" << static_cast<int>(s) << ")";
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/base/log_severity.h b/ChattingApp 000/Pods/abseil/absl/base/log_severity.h
new file mode 100644
index 0000000..65a3b16
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/log_severity.h	
@@ -0,0 +1,121 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_LOG_SEVERITY_H_
+#define ABSL_BASE_INTERNAL_LOG_SEVERITY_H_
+
+#include <array>
+#include <ostream>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// absl::LogSeverity
+//
+// Four severity levels are defined. Logging APIs should terminate the program
+// when a message is logged at severity `kFatal`; the other levels have no
+// special semantics.
+//
+// Values other than the four defined levels (e.g. produced by `static_cast`)
+// are valid, but their semantics when passed to a function, macro, or flag
+// depend on the function, macro, or flag. The usual behavior is to normalize
+// such values to a defined severity level, however in some cases values other
+// than the defined levels are useful for comparison.
+//
+// Exmaple:
+//
+//   // Effectively disables all logging:
+//   SetMinLogLevel(static_cast<absl::LogSeverity>(100));
+//
+// Abseil flags may be defined with type `LogSeverity`. Dependency layering
+// constraints require that the `AbslParseFlag()` overload be declared and
+// defined in the flags library itself rather than here. The `AbslUnparseFlag()`
+// overload is defined there as well for consistency.
+//
+// absl::LogSeverity Flag String Representation
+//
+// An `absl::LogSeverity` has a string representation used for parsing
+// command-line flags based on the enumerator name (e.g. `kFatal`) or
+// its unprefixed name (without the `k`) in any case-insensitive form. (E.g.
+// "FATAL", "fatal" or "Fatal" are all valid.) Unparsing such flags produces an
+// unprefixed string representation in all caps (e.g. "FATAL") or an integer.
+//
+// Additionally, the parser accepts arbitrary integers (as if the type were
+// `int`).
+//
+// Examples:
+//
+//   --my_log_level=kInfo
+//   --my_log_level=INFO
+//   --my_log_level=info
+//   --my_log_level=0
+//
+// Unparsing a flag produces the same result as `absl::LogSeverityName()` for
+// the standard levels and a base-ten integer otherwise.
+enum class LogSeverity : int {
+  kInfo = 0,
+  kWarning = 1,
+  kError = 2,
+  kFatal = 3,
+};
+
+// LogSeverities()
+//
+// Returns an iterable of all standard `absl::LogSeverity` values, ordered from
+// least to most severe.
+constexpr std::array<absl::LogSeverity, 4> LogSeverities() {
+  return {{absl::LogSeverity::kInfo, absl::LogSeverity::kWarning,
+           absl::LogSeverity::kError, absl::LogSeverity::kFatal}};
+}
+
+// LogSeverityName()
+//
+// Returns the all-caps string representation (e.g. "INFO") of the specified
+// severity level if it is one of the standard levels and "UNKNOWN" otherwise.
+constexpr const char* LogSeverityName(absl::LogSeverity s) {
+  return s == absl::LogSeverity::kInfo
+             ? "INFO"
+             : s == absl::LogSeverity::kWarning
+                   ? "WARNING"
+                   : s == absl::LogSeverity::kError
+                         ? "ERROR"
+                         : s == absl::LogSeverity::kFatal ? "FATAL" : "UNKNOWN";
+}
+
+// NormalizeLogSeverity()
+//
+// Values less than `kInfo` normalize to `kInfo`; values greater than `kFatal`
+// normalize to `kError` (**NOT** `kFatal`).
+constexpr absl::LogSeverity NormalizeLogSeverity(absl::LogSeverity s) {
+  return s < absl::LogSeverity::kInfo
+             ? absl::LogSeverity::kInfo
+             : s > absl::LogSeverity::kFatal ? absl::LogSeverity::kError : s;
+}
+constexpr absl::LogSeverity NormalizeLogSeverity(int s) {
+  return absl::NormalizeLogSeverity(static_cast<absl::LogSeverity>(s));
+}
+
+// operator<<
+//
+// The exact representation of a streamed `absl::LogSeverity` is deliberately
+// unspecified; do not rely on it.
+std::ostream& operator<<(std::ostream& os, absl::LogSeverity s);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_INTERNAL_LOG_SEVERITY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/macros.h b/ChattingApp 000/Pods/abseil/absl/base/macros.h
new file mode 100644
index 0000000..547f93b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/macros.h	
@@ -0,0 +1,220 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: macros.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the set of language macros used within Abseil code.
+// For the set of macros used to determine supported compilers and platforms,
+// see absl/base/config.h instead.
+//
+// This code is compiled directly on many platforms, including client
+// platforms like Windows, Mac, and embedded systems.  Before making
+// any changes here, make sure that you're not breaking any platforms.
+
+#ifndef ABSL_BASE_MACROS_H_
+#define ABSL_BASE_MACROS_H_
+
+#include <cassert>
+#include <cstddef>
+
+#include "absl/base/attributes.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+
+// ABSL_ARRAYSIZE()
+//
+// Returns the number of elements in an array as a compile-time constant, which
+// can be used in defining new arrays. If you use this macro on a pointer by
+// mistake, you will get a compile-time error.
+#define ABSL_ARRAYSIZE(array) \
+  (sizeof(::absl::macros_internal::ArraySizeHelper(array)))
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace macros_internal {
+// Note: this internal template function declaration is used by ABSL_ARRAYSIZE.
+// The function doesn't need a definition, as we only use its type.
+template <typename T, size_t N>
+auto ArraySizeHelper(const T (&array)[N]) -> char (&)[N];
+}  // namespace macros_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// kLinkerInitialized
+//
+// An enum used only as a constructor argument to indicate that a variable has
+// static storage duration, and that the constructor should do nothing to its
+// state. Use of this macro indicates to the reader that it is legal to
+// declare a static instance of the class, provided the constructor is given
+// the absl::base_internal::kLinkerInitialized argument.
+//
+// Normally, it is unsafe to declare a static variable that has a constructor or
+// a destructor because invocation order is undefined. However, if the type can
+// be zero-initialized (which the loader does for static variables) into a valid
+// state and the type's destructor does not affect storage, then a constructor
+// for static initialization can be declared.
+//
+// Example:
+//       // Declaration
+//       explicit MyClass(absl::base_internal:LinkerInitialized x) {}
+//
+//       // Invocation
+//       static MyClass my_global(absl::base_internal::kLinkerInitialized);
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+enum LinkerInitialized {
+  kLinkerInitialized = 0,
+};
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// ABSL_FALLTHROUGH_INTENDED
+//
+// Annotates implicit fall-through between switch labels, allowing a case to
+// indicate intentional fallthrough and turn off warnings about any lack of a
+// `break` statement. The ABSL_FALLTHROUGH_INTENDED macro should be followed by
+// a semicolon and can be used in most places where `break` can, provided that
+// no statements exist between it and the next switch label.
+//
+// Example:
+//
+//  switch (x) {
+//    case 40:
+//    case 41:
+//      if (truth_is_out_there) {
+//        ++x;
+//        ABSL_FALLTHROUGH_INTENDED;  // Use instead of/along with annotations
+//                                    // in comments
+//      } else {
+//        return x;
+//      }
+//    case 42:
+//      ...
+//
+// Notes: when compiled with clang in C++11 mode, the ABSL_FALLTHROUGH_INTENDED
+// macro is expanded to the [[clang::fallthrough]] attribute, which is analysed
+// when  performing switch labels fall-through diagnostic
+// (`-Wimplicit-fallthrough`). See clang documentation on language extensions
+// for details:
+// https://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough
+//
+// When used with unsupported compilers, the ABSL_FALLTHROUGH_INTENDED macro
+// has no effect on diagnostics. In any case this macro has no effect on runtime
+// behavior and performance of code.
+#ifdef ABSL_FALLTHROUGH_INTENDED
+#error "ABSL_FALLTHROUGH_INTENDED should not be defined."
+#endif
+
+// TODO(zhangxy): Use c++17 standard [[fallthrough]] macro, when supported.
+#if defined(__clang__) && defined(__has_warning)
+#if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#define ABSL_FALLTHROUGH_INTENDED [[clang::fallthrough]]
+#endif
+#elif defined(__GNUC__) && __GNUC__ >= 7
+#define ABSL_FALLTHROUGH_INTENDED [[gnu::fallthrough]]
+#endif
+
+#ifndef ABSL_FALLTHROUGH_INTENDED
+#define ABSL_FALLTHROUGH_INTENDED \
+  do {                            \
+  } while (0)
+#endif
+
+// ABSL_DEPRECATED()
+//
+// Marks a deprecated class, struct, enum, function, method and variable
+// declarations. The macro argument is used as a custom diagnostic message (e.g.
+// suggestion of a better alternative).
+//
+// Examples:
+//
+//   class ABSL_DEPRECATED("Use Bar instead") Foo {...};
+//
+//   ABSL_DEPRECATED("Use Baz() instead") void Bar() {...}
+//
+//   template <typename T>
+//   ABSL_DEPRECATED("Use DoThat() instead")
+//   void DoThis();
+//
+// Every usage of a deprecated entity will trigger a warning when compiled with
+// clang's `-Wdeprecated-declarations` option. This option is turned off by
+// default, but the warnings will be reported by clang-tidy.
+#if defined(__clang__) && __cplusplus >= 201103L
+#define ABSL_DEPRECATED(message) __attribute__((deprecated(message)))
+#endif
+
+#ifndef ABSL_DEPRECATED
+#define ABSL_DEPRECATED(message)
+#endif
+
+// ABSL_BAD_CALL_IF()
+//
+// Used on a function overload to trap bad calls: any call that matches the
+// overload will cause a compile-time error. This macro uses a clang-specific
+// "enable_if" attribute, as described at
+// https://clang.llvm.org/docs/AttributeReference.html#enable-if
+//
+// Overloads which use this macro should be bracketed by
+// `#ifdef ABSL_BAD_CALL_IF`.
+//
+// Example:
+//
+//   int isdigit(int c);
+//   #ifdef ABSL_BAD_CALL_IF
+//   int isdigit(int c)
+//     ABSL_BAD_CALL_IF(c <= -1 || c > 255,
+//                       "'c' must have the value of an unsigned char or EOF");
+//   #endif // ABSL_BAD_CALL_IF
+#if ABSL_HAVE_ATTRIBUTE(enable_if)
+#define ABSL_BAD_CALL_IF(expr, msg) \
+  __attribute__((enable_if(expr, "Bad call trap"), unavailable(msg)))
+#endif
+
+// ABSL_ASSERT()
+//
+// In C++11, `assert` can't be used portably within constexpr functions.
+// ABSL_ASSERT functions as a runtime assert but works in C++11 constexpr
+// functions.  Example:
+//
+// constexpr double Divide(double a, double b) {
+//   return ABSL_ASSERT(b != 0), a / b;
+// }
+//
+// This macro is inspired by
+// https://akrzemi1.wordpress.com/2017/05/18/asserts-in-constexpr-functions/
+#if defined(NDEBUG)
+#define ABSL_ASSERT(expr) \
+  (false ? static_cast<void>(expr) : static_cast<void>(0))
+#else
+#define ABSL_ASSERT(expr)                           \
+  (ABSL_PREDICT_TRUE((expr)) ? static_cast<void>(0) \
+                             : [] { assert(false && #expr); }())  // NOLINT
+#endif
+
+#ifdef ABSL_HAVE_EXCEPTIONS
+#define ABSL_INTERNAL_TRY try
+#define ABSL_INTERNAL_CATCH_ANY catch (...)
+#define ABSL_INTERNAL_RETHROW do { throw; } while (false)
+#else  // ABSL_HAVE_EXCEPTIONS
+#define ABSL_INTERNAL_TRY if (true)
+#define ABSL_INTERNAL_CATCH_ANY else if (false)
+#define ABSL_INTERNAL_RETHROW do {} while (false)
+#endif  // ABSL_HAVE_EXCEPTIONS
+
+#endif  // ABSL_BASE_MACROS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/optimization.h b/ChattingApp 000/Pods/abseil/absl/base/optimization.h
new file mode 100644
index 0000000..646523b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/optimization.h	
@@ -0,0 +1,181 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: optimization.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines portable macros for performance optimization.
+
+#ifndef ABSL_BASE_OPTIMIZATION_H_
+#define ABSL_BASE_OPTIMIZATION_H_
+
+#include "absl/base/config.h"
+
+// ABSL_BLOCK_TAIL_CALL_OPTIMIZATION
+//
+// Instructs the compiler to avoid optimizing tail-call recursion. Use of this
+// macro is useful when you wish to preserve the existing function order within
+// a stack trace for logging, debugging, or profiling purposes.
+//
+// Example:
+//
+//   int f() {
+//     int result = g();
+//     ABSL_BLOCK_TAIL_CALL_OPTIMIZATION();
+//     return result;
+//   }
+#if defined(__pnacl__)
+#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() if (volatile int x = 0) { (void)x; }
+#elif defined(__clang__)
+// Clang will not tail call given inline volatile assembly.
+#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__("")
+#elif defined(__GNUC__)
+// GCC will not tail call given inline volatile assembly.
+#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__("")
+#elif defined(_MSC_VER)
+#include <intrin.h>
+// The __nop() intrinsic blocks the optimisation.
+#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() __nop()
+#else
+#define ABSL_BLOCK_TAIL_CALL_OPTIMIZATION() if (volatile int x = 0) { (void)x; }
+#endif
+
+// ABSL_CACHELINE_SIZE
+//
+// Explicitly defines the size of the L1 cache for purposes of alignment.
+// Setting the cacheline size allows you to specify that certain objects be
+// aligned on a cacheline boundary with `ABSL_CACHELINE_ALIGNED` declarations.
+// (See below.)
+//
+// NOTE: this macro should be replaced with the following C++17 features, when
+// those are generally available:
+//
+//   * `std::hardware_constructive_interference_size`
+//   * `std::hardware_destructive_interference_size`
+//
+// See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html
+// for more information.
+#if defined(__GNUC__)
+// Cache line alignment
+#if defined(__i386__) || defined(__x86_64__)
+#define ABSL_CACHELINE_SIZE 64
+#elif defined(__powerpc64__)
+#define ABSL_CACHELINE_SIZE 128
+#elif defined(__aarch64__)
+// We would need to read special register ctr_el0 to find out L1 dcache size.
+// This value is a good estimate based on a real aarch64 machine.
+#define ABSL_CACHELINE_SIZE 64
+#elif defined(__arm__)
+// Cache line sizes for ARM: These values are not strictly correct since
+// cache line sizes depend on implementations, not architectures.  There
+// are even implementations with cache line sizes configurable at boot
+// time.
+#if defined(__ARM_ARCH_5T__)
+#define ABSL_CACHELINE_SIZE 32
+#elif defined(__ARM_ARCH_7A__)
+#define ABSL_CACHELINE_SIZE 64
+#endif
+#endif
+
+#ifndef ABSL_CACHELINE_SIZE
+// A reasonable default guess.  Note that overestimates tend to waste more
+// space, while underestimates tend to waste more time.
+#define ABSL_CACHELINE_SIZE 64
+#endif
+
+// ABSL_CACHELINE_ALIGNED
+//
+// Indicates that the declared object be cache aligned using
+// `ABSL_CACHELINE_SIZE` (see above). Cacheline aligning objects allows you to
+// load a set of related objects in the L1 cache for performance improvements.
+// Cacheline aligning objects properly allows constructive memory sharing and
+// prevents destructive (or "false") memory sharing.
+//
+// NOTE: this macro should be replaced with usage of `alignas()` using
+// `std::hardware_constructive_interference_size` and/or
+// `std::hardware_destructive_interference_size` when available within C++17.
+//
+// See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html
+// for more information.
+//
+// On some compilers, `ABSL_CACHELINE_ALIGNED` expands to an `__attribute__`
+// or `__declspec` attribute. For compilers where this is not known to work,
+// the macro expands to nothing.
+//
+// No further guarantees are made here. The result of applying the macro
+// to variables and types is always implementation-defined.
+//
+// WARNING: It is easy to use this attribute incorrectly, even to the point
+// of causing bugs that are difficult to diagnose, crash, etc. It does not
+// of itself guarantee that objects are aligned to a cache line.
+//
+// NOTE: Some compilers are picky about the locations of annotations such as
+// this attribute, so prefer to put it at the beginning of your declaration.
+// For example,
+//
+//   ABSL_CACHELINE_ALIGNED static Foo* foo = ...
+//
+//   class ABSL_CACHELINE_ALIGNED Bar { ...
+//
+// Recommendations:
+//
+// 1) Consult compiler documentation; this comment is not kept in sync as
+//    toolchains evolve.
+// 2) Verify your use has the intended effect. This often requires inspecting
+//    the generated machine code.
+// 3) Prefer applying this attribute to individual variables. Avoid
+//    applying it to types. This tends to localize the effect.
+#define ABSL_CACHELINE_ALIGNED __attribute__((aligned(ABSL_CACHELINE_SIZE)))
+#elif defined(_MSC_VER)
+#define ABSL_CACHELINE_SIZE 64
+#define ABSL_CACHELINE_ALIGNED __declspec(align(ABSL_CACHELINE_SIZE))
+#else
+#define ABSL_CACHELINE_SIZE 64
+#define ABSL_CACHELINE_ALIGNED
+#endif
+
+// ABSL_PREDICT_TRUE, ABSL_PREDICT_FALSE
+//
+// Enables the compiler to prioritize compilation using static analysis for
+// likely paths within a boolean branch.
+//
+// Example:
+//
+//   if (ABSL_PREDICT_TRUE(expression)) {
+//     return result;                        // Faster if more likely
+//   } else {
+//     return 0;
+//   }
+//
+// Compilers can use the information that a certain branch is not likely to be
+// taken (for instance, a CHECK failure) to optimize for the common case in
+// the absence of better information (ie. compiling gcc with `-fprofile-arcs`).
+//
+// Recommendation: Modern CPUs dynamically predict branch execution paths,
+// typically with accuracy greater than 97%. As a result, annotating every
+// branch in a codebase is likely counterproductive; however, annotating
+// specific branches that are both hot and consistently mispredicted is likely
+// to yield performance improvements.
+#if ABSL_HAVE_BUILTIN(__builtin_expect) || \
+    (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_PREDICT_FALSE(x) (__builtin_expect(x, 0))
+#define ABSL_PREDICT_TRUE(x) (__builtin_expect(false || (x), true))
+#else
+#define ABSL_PREDICT_FALSE(x) (x)
+#define ABSL_PREDICT_TRUE(x) (x)
+#endif
+
+#endif  // ABSL_BASE_OPTIMIZATION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/options.h b/ChattingApp 000/Pods/abseil/absl/base/options.h
new file mode 100644
index 0000000..50f26e2
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/options.h	
@@ -0,0 +1,211 @@
+#ifndef ABSL_BASE_OPTIONS_H_
+#define ABSL_BASE_OPTIONS_H_
+
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: options.h
+// -----------------------------------------------------------------------------
+//
+// This file contains Abseil configuration options for setting specific
+// implementations instead of letting Abseil determine which implementation to
+// use at compile-time. Setting these options may be useful for package or build
+// managers who wish to guarantee ABI stability within binary builds (which are
+// otherwise difficult to enforce).
+//
+// *** IMPORTANT NOTICE FOR PACKAGE MANAGERS:  It is important that
+// maintainers of package managers who wish to package Abseil read and
+// understand this file! ***
+//
+// Abseil contains a number of possible configuration endpoints, based on
+// parameters such as the detected platform, language version, or command-line
+// flags used to invoke the underlying binary. As is the case with all
+// libraries, binaries which contain Abseil code must ensure that separate
+// packages use the same compiled copy of Abseil to avoid a diamond dependency
+// problem, which can occur if two packages built with different Abseil
+// configuration settings are linked together. Diamond dependency problems in
+// C++ may manifest as violations to the One Definition Rule (ODR) (resulting in
+// linker errors), or undefined behavior (resulting in crashes).
+//
+// Diamond dependency problems can be avoided if all packages utilize the same
+// exact version of Abseil. Building from source code with the same compilation
+// parameters is the easiest way to avoid such dependency problems. However, for
+// package managers who cannot control such compilation parameters, we are
+// providing the file to allow you to inject ABI (Application Binary Interface)
+// stability across builds. Settings options in this file will neither change
+// API nor ABI, providing a stable copy of Abseil between packages.
+//
+// Care must be taken to keep options within these configurations isolated
+// from any other dynamic settings, such as command-line flags which could alter
+// these options. This file is provided specifically to help build and package
+// managers provide a stable copy of Abseil within their libraries and binaries;
+// other developers should not have need to alter the contents of this file.
+//
+// -----------------------------------------------------------------------------
+// Usage
+// -----------------------------------------------------------------------------
+//
+// For any particular package release, set the appropriate definitions within
+// this file to whatever value makes the most sense for your package(s). Note
+// that, by default, most of these options, at the moment, affect the
+// implementation of types; future options may affect other implementation
+// details.
+//
+// NOTE: the defaults within this file all assume that Abseil can select the
+// proper Abseil implementation at compile-time, which will not be sufficient
+// to guarantee ABI stability to package managers.
+
+// Include a standard library header to allow configuration based on the
+// standard library in use.
+#ifdef __cplusplus
+#include <ciso646>
+#endif
+
+// -----------------------------------------------------------------------------
+// Type Compatibility Options
+// -----------------------------------------------------------------------------
+//
+// ABSL_OPTION_USE_STD_ANY
+//
+// This option controls whether absl::any is implemented as an alias to
+// std::any, or as an independent implementation.
+//
+// A value of 0 means to use Abseil's implementation.  This requires only C++11
+// support, and is expected to work on every toolchain we support.
+//
+// A value of 1 means to use an alias to std::any.  This requires that all code
+// using Abseil is built in C++17 mode or later.
+//
+// A value of 2 means to detect the C++ version being used to compile Abseil,
+// and use an alias only if a working std::any is available.  This option is
+// useful when you are building your entire program, including all of its
+// dependencies, from source.  It should not be used otherwise -- for example,
+// if you are distributing Abseil in a binary package manager -- since in
+// mode 2, absl::any will name a different type, with a different mangled name
+// and binary layout, depending on the compiler flags passed by the end user.
+// For more info, see https://abseil.io/about/design/dropin-types.
+//
+// User code should not inspect this macro.  To check in the preprocessor if
+// absl::any is a typedef of std::any, use the feature macro ABSL_USES_STD_ANY.
+
+#define ABSL_OPTION_USE_STD_ANY 2
+
+
+// ABSL_OPTION_USE_STD_OPTIONAL
+//
+// This option controls whether absl::optional is implemented as an alias to
+// std::optional, or as an independent implementation.
+//
+// A value of 0 means to use Abseil's implementation.  This requires only C++11
+// support, and is expected to work on every toolchain we support.
+//
+// A value of 1 means to use an alias to std::optional.  This requires that all
+// code using Abseil is built in C++17 mode or later.
+//
+// A value of 2 means to detect the C++ version being used to compile Abseil,
+// and use an alias only if a working std::optional is available.  This option
+// is useful when you are building your program from source.  It should not be
+// used otherwise -- for example, if you are distributing Abseil in a binary
+// package manager -- since in mode 2, absl::optional will name a different
+// type, with a different mangled name and binary layout, depending on the
+// compiler flags passed by the end user.  For more info, see
+// https://abseil.io/about/design/dropin-types.
+
+// User code should not inspect this macro.  To check in the preprocessor if
+// absl::optional is a typedef of std::optional, use the feature macro
+// ABSL_USES_STD_OPTIONAL.
+
+#define ABSL_OPTION_USE_STD_OPTIONAL 2
+
+
+// ABSL_OPTION_USE_STD_STRING_VIEW
+//
+// This option controls whether absl::string_view is implemented as an alias to
+// std::string_view, or as an independent implementation.
+//
+// A value of 0 means to use Abseil's implementation.  This requires only C++11
+// support, and is expected to work on every toolchain we support.
+//
+// A value of 1 means to use an alias to std::string_view.  This requires that
+// all code using Abseil is built in C++17 mode or later.
+//
+// A value of 2 means to detect the C++ version being used to compile Abseil,
+// and use an alias only if a working std::string_view is available.  This
+// option is useful when you are building your program from source.  It should
+// not be used otherwise -- for example, if you are distributing Abseil in a
+// binary package manager -- since in mode 2, absl::string_view will name a
+// different type, with a different mangled name and binary layout, depending on
+// the compiler flags passed by the end user.  For more info, see
+// https://abseil.io/about/design/dropin-types.
+//
+// User code should not inspect this macro.  To check in the preprocessor if
+// absl::string_view is a typedef of std::string_view, use the feature macro
+// ABSL_USES_STD_STRING_VIEW.
+
+#define ABSL_OPTION_USE_STD_STRING_VIEW 2
+
+// ABSL_OPTION_USE_STD_VARIANT
+//
+// This option controls whether absl::variant is implemented as an alias to
+// std::variant, or as an independent implementation.
+//
+// A value of 0 means to use Abseil's implementation.  This requires only C++11
+// support, and is expected to work on every toolchain we support.
+//
+// A value of 1 means to use an alias to std::variant.  This requires that all
+// code using Abseil is built in C++17 mode or later.
+//
+// A value of 2 means to detect the C++ version being used to compile Abseil,
+// and use an alias only if a working std::variant is available.  This option
+// is useful when you are building your program from source.  It should not be
+// used otherwise -- for example, if you are distributing Abseil in a binary
+// package manager -- since in mode 2, absl::variant will name a different
+// type, with a different mangled name and binary layout, depending on the
+// compiler flags passed by the end user.  For more info, see
+// https://abseil.io/about/design/dropin-types.
+//
+// User code should not inspect this macro.  To check in the preprocessor if
+// absl::variant is a typedef of std::variant, use the feature macro
+// ABSL_USES_STD_VARIANT.
+
+#define ABSL_OPTION_USE_STD_VARIANT 2
+
+
+// ABSL_OPTION_USE_INLINE_NAMESPACE
+// ABSL_OPTION_INLINE_NAMESPACE_NAME
+//
+// These options controls whether all entities in the absl namespace are
+// contained within an inner inline namespace.  This does not affect the
+// user-visible API of Abseil, but it changes the mangled names of all symbols.
+//
+// This can be useful as a version tag if you are distributing Abseil in
+// precompiled form.  This will prevent a binary library build of Abseil with
+// one inline namespace being used with headers configured with a different
+// inline namespace name.  Binary packagers are reminded that Abseil does not
+// guarantee any ABI stability in Abseil, so any update of Abseil or
+// configuration change in such a binary package should be combined with a
+// new, unique value for the inline namespace name.
+//
+// A value of 0 means not to use inline namespaces.
+//
+// A value of 1 means to use an inline namespace with the given name inside
+// namespace absl.  If this is set, ABSL_OPTION_INLINE_NAMESPACE_NAME must also
+// be changed to a new, unique identifier name.  In particular "head" is not
+// allowed.
+
+#define ABSL_OPTION_USE_INLINE_NAMESPACE 1
+#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_2020_02_25
+
+#endif  // ABSL_BASE_OPTIONS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/policy_checks.h b/ChattingApp 000/Pods/abseil/absl/base/policy_checks.h
new file mode 100644
index 0000000..4dfa49e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/policy_checks.h	
@@ -0,0 +1,111 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: policy_checks.h
+// -----------------------------------------------------------------------------
+//
+// This header enforces a minimum set of policies at build time, such as the
+// supported compiler and library versions. Unsupported configurations are
+// reported with `#error`. This enforcement is best effort, so successfully
+// compiling this header does not guarantee a supported configuration.
+
+#ifndef ABSL_BASE_POLICY_CHECKS_H_
+#define ABSL_BASE_POLICY_CHECKS_H_
+
+// Included for the __GLIBC_PREREQ macro used below.
+#include <limits.h>
+
+// Included for the _STLPORT_VERSION macro used below.
+#if defined(__cplusplus)
+#include <cstddef>
+#endif
+
+// -----------------------------------------------------------------------------
+// Operating System Check
+// -----------------------------------------------------------------------------
+
+#if defined(__CYGWIN__)
+#error "Cygwin is not supported."
+#endif
+
+// -----------------------------------------------------------------------------
+// Compiler Check
+// -----------------------------------------------------------------------------
+
+// We support MSVC++ 14.0 update 2 and later.
+// This minimum will go up.
+#if defined(_MSC_FULL_VER) && _MSC_FULL_VER < 190023918 && !defined(__clang__)
+#error "This package requires Visual Studio 2015 Update 2 or higher."
+#endif
+
+// We support gcc 4.7 and later.
+// This minimum will go up.
+#if defined(__GNUC__) && !defined(__clang__)
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7)
+#error "This package requires gcc 4.7 or higher."
+#endif
+#endif
+
+// We support Apple Xcode clang 4.2.1 (version 421.11.65) and later.
+// This corresponds to Apple Xcode version 4.5.
+// This minimum will go up.
+#if defined(__apple_build_version__) && __apple_build_version__ < 4211165
+#error "This package requires __apple_build_version__ of 4211165 or higher."
+#endif
+
+// -----------------------------------------------------------------------------
+// C++ Version Check
+// -----------------------------------------------------------------------------
+
+// Enforce C++11 as the minimum.  Note that Visual Studio has not
+// advanced __cplusplus despite being good enough for our purposes, so
+// so we exempt it from the check.
+#if defined(__cplusplus) && !defined(_MSC_VER)
+#if __cplusplus < 201103L
+#error "C++ versions less than C++11 are not supported."
+#endif
+#endif
+
+// -----------------------------------------------------------------------------
+// Standard Library Check
+// -----------------------------------------------------------------------------
+
+#if defined(_STLPORT_VERSION)
+#error "STLPort is not supported."
+#endif
+
+// -----------------------------------------------------------------------------
+// `char` Size Check
+// -----------------------------------------------------------------------------
+
+// Abseil currently assumes CHAR_BIT == 8. If you would like to use Abseil on a
+// platform where this is not the case, please provide us with the details about
+// your platform so we can consider relaxing this requirement.
+#if CHAR_BIT != 8
+#error "Abseil assumes CHAR_BIT == 8."
+#endif
+
+// -----------------------------------------------------------------------------
+// `int` Size Check
+// -----------------------------------------------------------------------------
+
+// Abseil currently assumes that an int is 4 bytes. If you would like to use
+// Abseil on a platform where this is not the case, please provide us with the
+// details about your platform so we can consider relaxing this requirement.
+#if INT_MAX < 2147483647
+#error "Abseil assumes that int is at least 4 bytes. "
+#endif
+
+#endif  // ABSL_BASE_POLICY_CHECKS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/port.h b/ChattingApp 000/Pods/abseil/absl/base/port.h
new file mode 100644
index 0000000..6c28068
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/port.h	
@@ -0,0 +1,26 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This files is a forwarding header for other headers containing various
+// portability macros and functions.
+// This file is used for both C and C++!
+
+#ifndef ABSL_BASE_PORT_H_
+#define ABSL_BASE_PORT_H_
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+#include "absl/base/optimization.h"
+
+#endif  // ABSL_BASE_PORT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/base/thread_annotations.h b/ChattingApp 000/Pods/abseil/absl/base/thread_annotations.h
new file mode 100644
index 0000000..5f51c0c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/base/thread_annotations.h	
@@ -0,0 +1,280 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: thread_annotations.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains macro definitions for thread safety annotations
+// that allow developers to document the locking policies of multi-threaded
+// code. The annotations can also help program analysis tools to identify
+// potential thread safety issues.
+//
+// These annotations are implemented using compiler attributes. Using the macros
+// defined here instead of raw attributes allow for portability and future
+// compatibility.
+//
+// When referring to mutexes in the arguments of the attributes, you should
+// use variable names or more complex expressions (e.g. my_object->mutex_)
+// that evaluate to a concrete mutex object whenever possible. If the mutex
+// you want to refer to is not in scope, you may use a member pointer
+// (e.g. &MyClass::mutex_) to refer to a mutex in some (unknown) object.
+
+#ifndef ABSL_BASE_THREAD_ANNOTATIONS_H_
+#define ABSL_BASE_THREAD_ANNOTATIONS_H_
+
+#include "absl/base/config.h"
+// TODO(mbonadei): Remove after the backward compatibility period.
+#include "absl/base/internal/thread_annotations.h"  // IWYU pragma: export
+
+#if defined(__clang__)
+#define ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(x) __attribute__((x))
+#else
+#define ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(x)  // no-op
+#endif
+
+// ABSL_GUARDED_BY()
+//
+// Documents if a shared field or global variable needs to be protected by a
+// mutex. ABSL_GUARDED_BY() allows the user to specify a particular mutex that
+// should be held when accessing the annotated variable.
+//
+// Although this annotation (and ABSL_PT_GUARDED_BY, below) cannot be applied to
+// local variables, a local variable and its associated mutex can often be
+// combined into a small class or struct, thereby allowing the annotation.
+//
+// Example:
+//
+//   class Foo {
+//     Mutex mu_;
+//     int p1_ ABSL_GUARDED_BY(mu_);
+//     ...
+//   };
+#define ABSL_GUARDED_BY(x) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(guarded_by(x))
+
+// ABSL_PT_GUARDED_BY()
+//
+// Documents if the memory location pointed to by a pointer should be guarded
+// by a mutex when dereferencing the pointer.
+//
+// Example:
+//   class Foo {
+//     Mutex mu_;
+//     int *p1_ ABSL_PT_GUARDED_BY(mu_);
+//     ...
+//   };
+//
+// Note that a pointer variable to a shared memory location could itself be a
+// shared variable.
+//
+// Example:
+//
+//   // `q_`, guarded by `mu1_`, points to a shared memory location that is
+//   // guarded by `mu2_`:
+//   int *q_ ABSL_GUARDED_BY(mu1_) ABSL_PT_GUARDED_BY(mu2_);
+#define ABSL_PT_GUARDED_BY(x) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(pt_guarded_by(x))
+
+// ABSL_ACQUIRED_AFTER() / ABSL_ACQUIRED_BEFORE()
+//
+// Documents the acquisition order between locks that can be held
+// simultaneously by a thread. For any two locks that need to be annotated
+// to establish an acquisition order, only one of them needs the annotation.
+// (i.e. You don't have to annotate both locks with both ABSL_ACQUIRED_AFTER
+// and ABSL_ACQUIRED_BEFORE.)
+//
+// As with ABSL_GUARDED_BY, this is only applicable to mutexes that are shared
+// fields or global variables.
+//
+// Example:
+//
+//   Mutex m1_;
+//   Mutex m2_ ABSL_ACQUIRED_AFTER(m1_);
+#define ABSL_ACQUIRED_AFTER(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(acquired_after(__VA_ARGS__))
+
+#define ABSL_ACQUIRED_BEFORE(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(acquired_before(__VA_ARGS__))
+
+// ABSL_EXCLUSIVE_LOCKS_REQUIRED() / ABSL_SHARED_LOCKS_REQUIRED()
+//
+// Documents a function that expects a mutex to be held prior to entry.
+// The mutex is expected to be held both on entry to, and exit from, the
+// function.
+//
+// An exclusive lock allows read-write access to the guarded data member(s), and
+// only one thread can acquire a lock exclusively at any one time. A shared lock
+// allows read-only access, and any number of threads can acquire a shared lock
+// concurrently.
+//
+// Generally, non-const methods should be annotated with
+// ABSL_EXCLUSIVE_LOCKS_REQUIRED, while const methods should be annotated with
+// ABSL_SHARED_LOCKS_REQUIRED.
+//
+// Example:
+//
+//   Mutex mu1, mu2;
+//   int a ABSL_GUARDED_BY(mu1);
+//   int b ABSL_GUARDED_BY(mu2);
+//
+//   void foo() ABSL_EXCLUSIVE_LOCKS_REQUIRED(mu1, mu2) { ... }
+//   void bar() const ABSL_SHARED_LOCKS_REQUIRED(mu1, mu2) { ... }
+#define ABSL_EXCLUSIVE_LOCKS_REQUIRED(...)   \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE( \
+      exclusive_locks_required(__VA_ARGS__))
+
+#define ABSL_SHARED_LOCKS_REQUIRED(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(shared_locks_required(__VA_ARGS__))
+
+// ABSL_LOCKS_EXCLUDED()
+//
+// Documents the locks acquired in the body of the function. These locks
+// cannot be held when calling this function (as Abseil's `Mutex` locks are
+// non-reentrant).
+#define ABSL_LOCKS_EXCLUDED(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(locks_excluded(__VA_ARGS__))
+
+// ABSL_LOCK_RETURNED()
+//
+// Documents a function that returns a mutex without acquiring it.  For example,
+// a public getter method that returns a pointer to a private mutex should
+// be annotated with ABSL_LOCK_RETURNED.
+#define ABSL_LOCK_RETURNED(x) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(lock_returned(x))
+
+// ABSL_LOCKABLE
+//
+// Documents if a class/type is a lockable type (such as the `Mutex` class).
+#define ABSL_LOCKABLE ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(lockable)
+
+// ABSL_SCOPED_LOCKABLE
+//
+// Documents if a class does RAII locking (such as the `MutexLock` class).
+// The constructor should use `LOCK_FUNCTION()` to specify the mutex that is
+// acquired, and the destructor should use `UNLOCK_FUNCTION()` with no
+// arguments; the analysis will assume that the destructor unlocks whatever the
+// constructor locked.
+#define ABSL_SCOPED_LOCKABLE \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(scoped_lockable)
+
+// ABSL_EXCLUSIVE_LOCK_FUNCTION()
+//
+// Documents functions that acquire a lock in the body of a function, and do
+// not release it.
+#define ABSL_EXCLUSIVE_LOCK_FUNCTION(...)    \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE( \
+      exclusive_lock_function(__VA_ARGS__))
+
+// ABSL_SHARED_LOCK_FUNCTION()
+//
+// Documents functions that acquire a shared (reader) lock in the body of a
+// function, and do not release it.
+#define ABSL_SHARED_LOCK_FUNCTION(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(shared_lock_function(__VA_ARGS__))
+
+// ABSL_UNLOCK_FUNCTION()
+//
+// Documents functions that expect a lock to be held on entry to the function,
+// and release it in the body of the function.
+#define ABSL_UNLOCK_FUNCTION(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(unlock_function(__VA_ARGS__))
+
+// ABSL_EXCLUSIVE_TRYLOCK_FUNCTION() / ABSL_SHARED_TRYLOCK_FUNCTION()
+//
+// Documents functions that try to acquire a lock, and return success or failure
+// (or a non-boolean value that can be interpreted as a boolean).
+// The first argument should be `true` for functions that return `true` on
+// success, or `false` for functions that return `false` on success. The second
+// argument specifies the mutex that is locked on success. If unspecified, this
+// mutex is assumed to be `this`.
+#define ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE( \
+      exclusive_trylock_function(__VA_ARGS__))
+
+#define ABSL_SHARED_TRYLOCK_FUNCTION(...)    \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE( \
+      shared_trylock_function(__VA_ARGS__))
+
+// ABSL_ASSERT_EXCLUSIVE_LOCK() / ABSL_ASSERT_SHARED_LOCK()
+//
+// Documents functions that dynamically check to see if a lock is held, and fail
+// if it is not held.
+#define ABSL_ASSERT_EXCLUSIVE_LOCK(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(assert_exclusive_lock(__VA_ARGS__))
+
+#define ABSL_ASSERT_SHARED_LOCK(...) \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(assert_shared_lock(__VA_ARGS__))
+
+// ABSL_NO_THREAD_SAFETY_ANALYSIS
+//
+// Turns off thread safety checking within the body of a particular function.
+// This annotation is used to mark functions that are known to be correct, but
+// the locking behavior is more complicated than the analyzer can handle.
+#define ABSL_NO_THREAD_SAFETY_ANALYSIS \
+  ABSL_INTERNAL_THREAD_ANNOTATION_ATTRIBUTE(no_thread_safety_analysis)
+
+//------------------------------------------------------------------------------
+// Tool-Supplied Annotations
+//------------------------------------------------------------------------------
+
+// ABSL_TS_UNCHECKED should be placed around lock expressions that are not valid
+// C++ syntax, but which are present for documentation purposes.  These
+// annotations will be ignored by the analysis.
+#define ABSL_TS_UNCHECKED(x) ""
+
+// ABSL_TS_FIXME is used to mark lock expressions that are not valid C++ syntax.
+// It is used by automated tools to mark and disable invalid expressions.
+// The annotation should either be fixed, or changed to ABSL_TS_UNCHECKED.
+#define ABSL_TS_FIXME(x) ""
+
+// Like ABSL_NO_THREAD_SAFETY_ANALYSIS, this turns off checking within the body
+// of a particular function.  However, this attribute is used to mark functions
+// that are incorrect and need to be fixed.  It is used by automated tools to
+// avoid breaking the build when the analysis is updated.
+// Code owners are expected to eventually fix the routine.
+#define ABSL_NO_THREAD_SAFETY_ANALYSIS_FIXME ABSL_NO_THREAD_SAFETY_ANALYSIS
+
+// Similar to ABSL_NO_THREAD_SAFETY_ANALYSIS_FIXME, this macro marks a
+// ABSL_GUARDED_BY annotation that needs to be fixed, because it is producing
+// thread safety warning. It disables the ABSL_GUARDED_BY.
+#define ABSL_GUARDED_BY_FIXME(x)
+
+// Disables warnings for a single read operation.  This can be used to avoid
+// warnings when it is known that the read is not actually involved in a race,
+// but the compiler cannot confirm that.
+#define ABSL_TS_UNCHECKED_READ(x) absl::base_internal::ts_unchecked_read(x)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// Takes a reference to a guarded data member, and returns an unguarded
+// reference.
+// Do not used this function directly, use ABSL_TS_UNCHECKED_READ instead.
+template <typename T>
+inline const T& ts_unchecked_read(const T& v) ABSL_NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+template <typename T>
+inline T& ts_unchecked_read(T& v) ABSL_NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+}  // namespace base_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_BASE_THREAD_ANNOTATIONS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/fixed_array.h b/ChattingApp 000/Pods/abseil/absl/container/fixed_array.h
new file mode 100644
index 0000000..a9ce99b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/fixed_array.h	
@@ -0,0 +1,515 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: fixed_array.h
+// -----------------------------------------------------------------------------
+//
+// A `FixedArray<T>` represents a non-resizable array of `T` where the length of
+// the array can be determined at run-time. It is a good replacement for
+// non-standard and deprecated uses of `alloca()` and variable length arrays
+// within the GCC extension. (See
+// https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html).
+//
+// `FixedArray` allocates small arrays inline, keeping performance fast by
+// avoiding heap operations. It also helps reduce the chances of
+// accidentally overflowing your stack if large input is passed to
+// your function.
+
+#ifndef ABSL_CONTAINER_FIXED_ARRAY_H_
+#define ABSL_CONTAINER_FIXED_ARRAY_H_
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <initializer_list>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <new>
+#include <type_traits>
+
+#include "absl/algorithm/algorithm.h"
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+#include "absl/container/internal/compressed_tuple.h"
+#include "absl/memory/memory.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+constexpr static auto kFixedArrayUseDefault = static_cast<size_t>(-1);
+
+// -----------------------------------------------------------------------------
+// FixedArray
+// -----------------------------------------------------------------------------
+//
+// A `FixedArray` provides a run-time fixed-size array, allocating a small array
+// inline for efficiency.
+//
+// Most users should not specify an `inline_elements` argument and let
+// `FixedArray` automatically determine the number of elements
+// to store inline based on `sizeof(T)`. If `inline_elements` is specified, the
+// `FixedArray` implementation will use inline storage for arrays with a
+// length <= `inline_elements`.
+//
+// Note that a `FixedArray` constructed with a `size_type` argument will
+// default-initialize its values by leaving trivially constructible types
+// uninitialized (e.g. int, int[4], double), and others default-constructed.
+// This matches the behavior of c-style arrays and `std::array`, but not
+// `std::vector`.
+//
+// Note that `FixedArray` does not provide a public allocator; if it requires a
+// heap allocation, it will do so with global `::operator new[]()` and
+// `::operator delete[]()`, even if T provides class-scope overrides for these
+// operators.
+template <typename T, size_t N = kFixedArrayUseDefault,
+          typename A = std::allocator<T>>
+class FixedArray {
+  static_assert(!std::is_array<T>::value || std::extent<T>::value > 0,
+                "Arrays with unknown bounds cannot be used with FixedArray.");
+
+  static constexpr size_t kInlineBytesDefault = 256;
+
+  using AllocatorTraits = std::allocator_traits<A>;
+  // std::iterator_traits isn't guaranteed to be SFINAE-friendly until C++17,
+  // but this seems to be mostly pedantic.
+  template <typename Iterator>
+  using EnableIfForwardIterator = absl::enable_if_t<std::is_convertible<
+      typename std::iterator_traits<Iterator>::iterator_category,
+      std::forward_iterator_tag>::value>;
+  static constexpr bool NoexceptCopyable() {
+    return std::is_nothrow_copy_constructible<StorageElement>::value &&
+           absl::allocator_is_nothrow<allocator_type>::value;
+  }
+  static constexpr bool NoexceptMovable() {
+    return std::is_nothrow_move_constructible<StorageElement>::value &&
+           absl::allocator_is_nothrow<allocator_type>::value;
+  }
+  static constexpr bool DefaultConstructorIsNonTrivial() {
+    return !absl::is_trivially_default_constructible<StorageElement>::value;
+  }
+
+ public:
+  using allocator_type = typename AllocatorTraits::allocator_type;
+  using value_type = typename allocator_type::value_type;
+  using pointer = typename allocator_type::pointer;
+  using const_pointer = typename allocator_type::const_pointer;
+  using reference = typename allocator_type::reference;
+  using const_reference = typename allocator_type::const_reference;
+  using size_type = typename allocator_type::size_type;
+  using difference_type = typename allocator_type::difference_type;
+  using iterator = pointer;
+  using const_iterator = const_pointer;
+  using reverse_iterator = std::reverse_iterator<iterator>;
+  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+
+  static constexpr size_type inline_elements =
+      (N == kFixedArrayUseDefault ? kInlineBytesDefault / sizeof(value_type)
+                                  : static_cast<size_type>(N));
+
+  FixedArray(
+      const FixedArray& other,
+      const allocator_type& a = allocator_type()) noexcept(NoexceptCopyable())
+      : FixedArray(other.begin(), other.end(), a) {}
+
+  FixedArray(
+      FixedArray&& other,
+      const allocator_type& a = allocator_type()) noexcept(NoexceptMovable())
+      : FixedArray(std::make_move_iterator(other.begin()),
+                   std::make_move_iterator(other.end()), a) {}
+
+  // Creates an array object that can store `n` elements.
+  // Note that trivially constructible elements will be uninitialized.
+  explicit FixedArray(size_type n, const allocator_type& a = allocator_type())
+      : storage_(n, a) {
+    if (DefaultConstructorIsNonTrivial()) {
+      memory_internal::ConstructRange(storage_.alloc(), storage_.begin(),
+                                      storage_.end());
+    }
+  }
+
+  // Creates an array initialized with `n` copies of `val`.
+  FixedArray(size_type n, const value_type& val,
+             const allocator_type& a = allocator_type())
+      : storage_(n, a) {
+    memory_internal::ConstructRange(storage_.alloc(), storage_.begin(),
+                                    storage_.end(), val);
+  }
+
+  // Creates an array initialized with the size and contents of `init_list`.
+  FixedArray(std::initializer_list<value_type> init_list,
+             const allocator_type& a = allocator_type())
+      : FixedArray(init_list.begin(), init_list.end(), a) {}
+
+  // Creates an array initialized with the elements from the input
+  // range. The array's size will always be `std::distance(first, last)`.
+  // REQUIRES: Iterator must be a forward_iterator or better.
+  template <typename Iterator, EnableIfForwardIterator<Iterator>* = nullptr>
+  FixedArray(Iterator first, Iterator last,
+             const allocator_type& a = allocator_type())
+      : storage_(std::distance(first, last), a) {
+    memory_internal::CopyRange(storage_.alloc(), storage_.begin(), first, last);
+  }
+
+  ~FixedArray() noexcept {
+    for (auto* cur = storage_.begin(); cur != storage_.end(); ++cur) {
+      AllocatorTraits::destroy(storage_.alloc(), cur);
+    }
+  }
+
+  // Assignments are deleted because they break the invariant that the size of a
+  // `FixedArray` never changes.
+  void operator=(FixedArray&&) = delete;
+  void operator=(const FixedArray&) = delete;
+
+  // FixedArray::size()
+  //
+  // Returns the length of the fixed array.
+  size_type size() const { return storage_.size(); }
+
+  // FixedArray::max_size()
+  //
+  // Returns the largest possible value of `std::distance(begin(), end())` for a
+  // `FixedArray<T>`. This is equivalent to the most possible addressable bytes
+  // over the number of bytes taken by T.
+  constexpr size_type max_size() const {
+    return (std::numeric_limits<difference_type>::max)() / sizeof(value_type);
+  }
+
+  // FixedArray::empty()
+  //
+  // Returns whether or not the fixed array is empty.
+  bool empty() const { return size() == 0; }
+
+  // FixedArray::memsize()
+  //
+  // Returns the memory size of the fixed array in bytes.
+  size_t memsize() const { return size() * sizeof(value_type); }
+
+  // FixedArray::data()
+  //
+  // Returns a const T* pointer to elements of the `FixedArray`. This pointer
+  // can be used to access (but not modify) the contained elements.
+  const_pointer data() const { return AsValueType(storage_.begin()); }
+
+  // Overload of FixedArray::data() to return a T* pointer to elements of the
+  // fixed array. This pointer can be used to access and modify the contained
+  // elements.
+  pointer data() { return AsValueType(storage_.begin()); }
+
+  // FixedArray::operator[]
+  //
+  // Returns a reference the ith element of the fixed array.
+  // REQUIRES: 0 <= i < size()
+  reference operator[](size_type i) {
+    assert(i < size());
+    return data()[i];
+  }
+
+  // Overload of FixedArray::operator()[] to return a const reference to the
+  // ith element of the fixed array.
+  // REQUIRES: 0 <= i < size()
+  const_reference operator[](size_type i) const {
+    assert(i < size());
+    return data()[i];
+  }
+
+  // FixedArray::at
+  //
+  // Bounds-checked access.  Returns a reference to the ith element of the
+  // fiexed array, or throws std::out_of_range
+  reference at(size_type i) {
+    if (ABSL_PREDICT_FALSE(i >= size())) {
+      base_internal::ThrowStdOutOfRange("FixedArray::at failed bounds check");
+    }
+    return data()[i];
+  }
+
+  // Overload of FixedArray::at() to return a const reference to the ith element
+  // of the fixed array.
+  const_reference at(size_type i) const {
+    if (ABSL_PREDICT_FALSE(i >= size())) {
+      base_internal::ThrowStdOutOfRange("FixedArray::at failed bounds check");
+    }
+    return data()[i];
+  }
+
+  // FixedArray::front()
+  //
+  // Returns a reference to the first element of the fixed array.
+  reference front() { return *begin(); }
+
+  // Overload of FixedArray::front() to return a reference to the first element
+  // of a fixed array of const values.
+  const_reference front() const { return *begin(); }
+
+  // FixedArray::back()
+  //
+  // Returns a reference to the last element of the fixed array.
+  reference back() { return *(end() - 1); }
+
+  // Overload of FixedArray::back() to return a reference to the last element
+  // of a fixed array of const values.
+  const_reference back() const { return *(end() - 1); }
+
+  // FixedArray::begin()
+  //
+  // Returns an iterator to the beginning of the fixed array.
+  iterator begin() { return data(); }
+
+  // Overload of FixedArray::begin() to return a const iterator to the
+  // beginning of the fixed array.
+  const_iterator begin() const { return data(); }
+
+  // FixedArray::cbegin()
+  //
+  // Returns a const iterator to the beginning of the fixed array.
+  const_iterator cbegin() const { return begin(); }
+
+  // FixedArray::end()
+  //
+  // Returns an iterator to the end of the fixed array.
+  iterator end() { return data() + size(); }
+
+  // Overload of FixedArray::end() to return a const iterator to the end of the
+  // fixed array.
+  const_iterator end() const { return data() + size(); }
+
+  // FixedArray::cend()
+  //
+  // Returns a const iterator to the end of the fixed array.
+  const_iterator cend() const { return end(); }
+
+  // FixedArray::rbegin()
+  //
+  // Returns a reverse iterator from the end of the fixed array.
+  reverse_iterator rbegin() { return reverse_iterator(end()); }
+
+  // Overload of FixedArray::rbegin() to return a const reverse iterator from
+  // the end of the fixed array.
+  const_reverse_iterator rbegin() const {
+    return const_reverse_iterator(end());
+  }
+
+  // FixedArray::crbegin()
+  //
+  // Returns a const reverse iterator from the end of the fixed array.
+  const_reverse_iterator crbegin() const { return rbegin(); }
+
+  // FixedArray::rend()
+  //
+  // Returns a reverse iterator from the beginning of the fixed array.
+  reverse_iterator rend() { return reverse_iterator(begin()); }
+
+  // Overload of FixedArray::rend() for returning a const reverse iterator
+  // from the beginning of the fixed array.
+  const_reverse_iterator rend() const {
+    return const_reverse_iterator(begin());
+  }
+
+  // FixedArray::crend()
+  //
+  // Returns a reverse iterator from the beginning of the fixed array.
+  const_reverse_iterator crend() const { return rend(); }
+
+  // FixedArray::fill()
+  //
+  // Assigns the given `value` to all elements in the fixed array.
+  void fill(const value_type& val) { std::fill(begin(), end(), val); }
+
+  // Relational operators. Equality operators are elementwise using
+  // `operator==`, while order operators order FixedArrays lexicographically.
+  friend bool operator==(const FixedArray& lhs, const FixedArray& rhs) {
+    return absl::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end());
+  }
+
+  friend bool operator!=(const FixedArray& lhs, const FixedArray& rhs) {
+    return !(lhs == rhs);
+  }
+
+  friend bool operator<(const FixedArray& lhs, const FixedArray& rhs) {
+    return std::lexicographical_compare(lhs.begin(), lhs.end(), rhs.begin(),
+                                        rhs.end());
+  }
+
+  friend bool operator>(const FixedArray& lhs, const FixedArray& rhs) {
+    return rhs < lhs;
+  }
+
+  friend bool operator<=(const FixedArray& lhs, const FixedArray& rhs) {
+    return !(rhs < lhs);
+  }
+
+  friend bool operator>=(const FixedArray& lhs, const FixedArray& rhs) {
+    return !(lhs < rhs);
+  }
+
+  template <typename H>
+  friend H AbslHashValue(H h, const FixedArray& v) {
+    return H::combine(H::combine_contiguous(std::move(h), v.data(), v.size()),
+                      v.size());
+  }
+
+ private:
+  // StorageElement
+  //
+  // For FixedArrays with a C-style-array value_type, StorageElement is a POD
+  // wrapper struct called StorageElementWrapper that holds the value_type
+  // instance inside. This is needed for construction and destruction of the
+  // entire array regardless of how many dimensions it has. For all other cases,
+  // StorageElement is just an alias of value_type.
+  //
+  // Maintainer's Note: The simpler solution would be to simply wrap value_type
+  // in a struct whether it's an array or not. That causes some paranoid
+  // diagnostics to misfire, believing that 'data()' returns a pointer to a
+  // single element, rather than the packed array that it really is.
+  // e.g.:
+  //
+  //     FixedArray<char> buf(1);
+  //     sprintf(buf.data(), "foo");
+  //
+  //     error: call to int __builtin___sprintf_chk(etc...)
+  //     will always overflow destination buffer [-Werror]
+  //
+  template <typename OuterT, typename InnerT = absl::remove_extent_t<OuterT>,
+            size_t InnerN = std::extent<OuterT>::value>
+  struct StorageElementWrapper {
+    InnerT array[InnerN];
+  };
+
+  using StorageElement =
+      absl::conditional_t<std::is_array<value_type>::value,
+                          StorageElementWrapper<value_type>, value_type>;
+
+  static pointer AsValueType(pointer ptr) { return ptr; }
+  static pointer AsValueType(StorageElementWrapper<value_type>* ptr) {
+    return std::addressof(ptr->array);
+  }
+
+  static_assert(sizeof(StorageElement) == sizeof(value_type), "");
+  static_assert(alignof(StorageElement) == alignof(value_type), "");
+
+  class NonEmptyInlinedStorage {
+   public:
+    StorageElement* data() { return reinterpret_cast<StorageElement*>(buff_); }
+    void AnnotateConstruct(size_type n);
+    void AnnotateDestruct(size_type n);
+
+#ifdef ADDRESS_SANITIZER
+    void* RedzoneBegin() { return &redzone_begin_; }
+    void* RedzoneEnd() { return &redzone_end_ + 1; }
+#endif  // ADDRESS_SANITIZER
+
+   private:
+    ADDRESS_SANITIZER_REDZONE(redzone_begin_);
+    alignas(StorageElement) char buff_[sizeof(StorageElement[inline_elements])];
+    ADDRESS_SANITIZER_REDZONE(redzone_end_);
+  };
+
+  class EmptyInlinedStorage {
+   public:
+    StorageElement* data() { return nullptr; }
+    void AnnotateConstruct(size_type) {}
+    void AnnotateDestruct(size_type) {}
+  };
+
+  using InlinedStorage =
+      absl::conditional_t<inline_elements == 0, EmptyInlinedStorage,
+                          NonEmptyInlinedStorage>;
+
+  // Storage
+  //
+  // An instance of Storage manages the inline and out-of-line memory for
+  // instances of FixedArray. This guarantees that even when construction of
+  // individual elements fails in the FixedArray constructor body, the
+  // destructor for Storage will still be called and out-of-line memory will be
+  // properly deallocated.
+  //
+  class Storage : public InlinedStorage {
+   public:
+    Storage(size_type n, const allocator_type& a)
+        : size_alloc_(n, a), data_(InitializeData()) {}
+
+    ~Storage() noexcept {
+      if (UsingInlinedStorage(size())) {
+        InlinedStorage::AnnotateDestruct(size());
+      } else {
+        AllocatorTraits::deallocate(alloc(), AsValueType(begin()), size());
+      }
+    }
+
+    size_type size() const { return size_alloc_.template get<0>(); }
+    StorageElement* begin() const { return data_; }
+    StorageElement* end() const { return begin() + size(); }
+    allocator_type& alloc() { return size_alloc_.template get<1>(); }
+
+   private:
+    static bool UsingInlinedStorage(size_type n) {
+      return n <= inline_elements;
+    }
+
+    StorageElement* InitializeData() {
+      if (UsingInlinedStorage(size())) {
+        InlinedStorage::AnnotateConstruct(size());
+        return InlinedStorage::data();
+      } else {
+        return reinterpret_cast<StorageElement*>(
+            AllocatorTraits::allocate(alloc(), size()));
+      }
+    }
+
+    // `CompressedTuple` takes advantage of EBCO for stateless `allocator_type`s
+    container_internal::CompressedTuple<size_type, allocator_type> size_alloc_;
+    StorageElement* data_;
+  };
+
+  Storage storage_;
+};
+
+template <typename T, size_t N, typename A>
+constexpr size_t FixedArray<T, N, A>::kInlineBytesDefault;
+
+template <typename T, size_t N, typename A>
+constexpr typename FixedArray<T, N, A>::size_type
+    FixedArray<T, N, A>::inline_elements;
+
+template <typename T, size_t N, typename A>
+void FixedArray<T, N, A>::NonEmptyInlinedStorage::AnnotateConstruct(
+    typename FixedArray<T, N, A>::size_type n) {
+#ifdef ADDRESS_SANITIZER
+  if (!n) return;
+  ANNOTATE_CONTIGUOUS_CONTAINER(data(), RedzoneEnd(), RedzoneEnd(), data() + n);
+  ANNOTATE_CONTIGUOUS_CONTAINER(RedzoneBegin(), data(), data(), RedzoneBegin());
+#endif                   // ADDRESS_SANITIZER
+  static_cast<void>(n);  // Mark used when not in asan mode
+}
+
+template <typename T, size_t N, typename A>
+void FixedArray<T, N, A>::NonEmptyInlinedStorage::AnnotateDestruct(
+    typename FixedArray<T, N, A>::size_type n) {
+#ifdef ADDRESS_SANITIZER
+  if (!n) return;
+  ANNOTATE_CONTIGUOUS_CONTAINER(data(), RedzoneEnd(), data() + n, RedzoneEnd());
+  ANNOTATE_CONTIGUOUS_CONTAINER(RedzoneBegin(), data(), RedzoneBegin(), data());
+#endif                   // ADDRESS_SANITIZER
+  static_cast<void>(n);  // Mark used when not in asan mode
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_FIXED_ARRAY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/flat_hash_map.h b/ChattingApp 000/Pods/abseil/absl/container/flat_hash_map.h
new file mode 100644
index 0000000..fcb70d8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/flat_hash_map.h	
@@ -0,0 +1,600 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: flat_hash_map.h
+// -----------------------------------------------------------------------------
+//
+// An `absl::flat_hash_map<K, V>` is an unordered associative container of
+// unique keys and associated values designed to be a more efficient replacement
+// for `std::unordered_map`. Like `unordered_map`, search, insertion, and
+// deletion of map elements can be done as an `O(1)` operation. However,
+// `flat_hash_map` (and other unordered associative containers known as the
+// collection of Abseil "Swiss tables") contain other optimizations that result
+// in both memory and computation advantages.
+//
+// In most cases, your default choice for a hash map should be a map of type
+// `flat_hash_map`.
+
+#ifndef ABSL_CONTAINER_FLAT_HASH_MAP_H_
+#define ABSL_CONTAINER_FLAT_HASH_MAP_H_
+
+#include <cstddef>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "absl/algorithm/container.h"
+#include "absl/container/internal/container_memory.h"
+#include "absl/container/internal/hash_function_defaults.h"  // IWYU pragma: export
+#include "absl/container/internal/raw_hash_map.h"  // IWYU pragma: export
+#include "absl/memory/memory.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+template <class K, class V>
+struct FlatHashMapPolicy;
+}  // namespace container_internal
+
+// -----------------------------------------------------------------------------
+// absl::flat_hash_map
+// -----------------------------------------------------------------------------
+//
+// An `absl::flat_hash_map<K, V>` is an unordered associative container which
+// has been optimized for both speed and memory footprint in most common use
+// cases. Its interface is similar to that of `std::unordered_map<K, V>` with
+// the following notable differences:
+//
+// * Requires keys that are CopyConstructible
+// * Requires values that are MoveConstructible
+// * Supports heterogeneous lookup, through `find()`, `operator[]()` and
+//   `insert()`, provided that the map is provided a compatible heterogeneous
+//   hashing function and equality operator.
+// * Invalidates any references and pointers to elements within the table after
+//   `rehash()`.
+// * Contains a `capacity()` member function indicating the number of element
+//   slots (open, deleted, and empty) within the hash map.
+// * Returns `void` from the `erase(iterator)` overload.
+//
+// By default, `flat_hash_map` uses the `absl::Hash` hashing framework.
+// All fundamental and Abseil types that support the `absl::Hash` framework have
+// a compatible equality operator for comparing insertions into `flat_hash_map`.
+// If your type is not yet supported by the `absl::Hash` framework, see
+// absl/hash/hash.h for information on extending Abseil hashing to user-defined
+// types.
+//
+// NOTE: A `flat_hash_map` stores its value types directly inside its
+// implementation array to avoid memory indirection. Because a `flat_hash_map`
+// is designed to move data when rehashed, map values will not retain pointer
+// stability. If you require pointer stability, or if your values are large,
+// consider using `absl::flat_hash_map<Key, std::unique_ptr<Value>>` instead.
+// If your types are not moveable or you require pointer stability for keys,
+// consider `absl::node_hash_map`.
+//
+// Example:
+//
+//   // Create a flat hash map of three strings (that map to strings)
+//   absl::flat_hash_map<std::string, std::string> ducks =
+//     {{"a", "huey"}, {"b", "dewey"}, {"c", "louie"}};
+//
+//  // Insert a new element into the flat hash map
+//  ducks.insert({"d", "donald"});
+//
+//  // Force a rehash of the flat hash map
+//  ducks.rehash(0);
+//
+//  // Find the element with the key "b"
+//  std::string search_key = "b";
+//  auto result = ducks.find(search_key);
+//  if (result != ducks.end()) {
+//    std::cout << "Result: " << result->second << std::endl;
+//  }
+template <class K, class V,
+          class Hash = absl::container_internal::hash_default_hash<K>,
+          class Eq = absl::container_internal::hash_default_eq<K>,
+          class Allocator = std::allocator<std::pair<const K, V>>>
+class flat_hash_map : public absl::container_internal::raw_hash_map<
+                          absl::container_internal::FlatHashMapPolicy<K, V>,
+                          Hash, Eq, Allocator> {
+  using Base = typename flat_hash_map::raw_hash_map;
+
+ public:
+  // Constructors and Assignment Operators
+  //
+  // A flat_hash_map supports the same overload set as `std::unordered_map`
+  // for construction and assignment:
+  //
+  // *  Default constructor
+  //
+  //    // No allocation for the table's elements is made.
+  //    absl::flat_hash_map<int, std::string> map1;
+  //
+  // * Initializer List constructor
+  //
+  //   absl::flat_hash_map<int, std::string> map2 =
+  //       {{1, "huey"}, {2, "dewey"}, {3, "louie"},};
+  //
+  // * Copy constructor
+  //
+  //   absl::flat_hash_map<int, std::string> map3(map2);
+  //
+  // * Copy assignment operator
+  //
+  //  // Hash functor and Comparator are copied as well
+  //  absl::flat_hash_map<int, std::string> map4;
+  //  map4 = map3;
+  //
+  // * Move constructor
+  //
+  //   // Move is guaranteed efficient
+  //   absl::flat_hash_map<int, std::string> map5(std::move(map4));
+  //
+  // * Move assignment operator
+  //
+  //   // May be efficient if allocators are compatible
+  //   absl::flat_hash_map<int, std::string> map6;
+  //   map6 = std::move(map5);
+  //
+  // * Range constructor
+  //
+  //   std::vector<std::pair<int, std::string>> v = {{1, "a"}, {2, "b"}};
+  //   absl::flat_hash_map<int, std::string> map7(v.begin(), v.end());
+  flat_hash_map() {}
+  using Base::Base;
+
+  // flat_hash_map::begin()
+  //
+  // Returns an iterator to the beginning of the `flat_hash_map`.
+  using Base::begin;
+
+  // flat_hash_map::cbegin()
+  //
+  // Returns a const iterator to the beginning of the `flat_hash_map`.
+  using Base::cbegin;
+
+  // flat_hash_map::cend()
+  //
+  // Returns a const iterator to the end of the `flat_hash_map`.
+  using Base::cend;
+
+  // flat_hash_map::end()
+  //
+  // Returns an iterator to the end of the `flat_hash_map`.
+  using Base::end;
+
+  // flat_hash_map::capacity()
+  //
+  // Returns the number of element slots (assigned, deleted, and empty)
+  // available within the `flat_hash_map`.
+  //
+  // NOTE: this member function is particular to `absl::flat_hash_map` and is
+  // not provided in the `std::unordered_map` API.
+  using Base::capacity;
+
+  // flat_hash_map::empty()
+  //
+  // Returns whether or not the `flat_hash_map` is empty.
+  using Base::empty;
+
+  // flat_hash_map::max_size()
+  //
+  // Returns the largest theoretical possible number of elements within a
+  // `flat_hash_map` under current memory constraints. This value can be thought
+  // of the largest value of `std::distance(begin(), end())` for a
+  // `flat_hash_map<K, V>`.
+  using Base::max_size;
+
+  // flat_hash_map::size()
+  //
+  // Returns the number of elements currently within the `flat_hash_map`.
+  using Base::size;
+
+  // flat_hash_map::clear()
+  //
+  // Removes all elements from the `flat_hash_map`. Invalidates any references,
+  // pointers, or iterators referring to contained elements.
+  //
+  // NOTE: this operation may shrink the underlying buffer. To avoid shrinking
+  // the underlying buffer call `erase(begin(), end())`.
+  using Base::clear;
+
+  // flat_hash_map::erase()
+  //
+  // Erases elements within the `flat_hash_map`. Erasing does not trigger a
+  // rehash. Overloads are listed below.
+  //
+  // void erase(const_iterator pos):
+  //
+  //   Erases the element at `position` of the `flat_hash_map`, returning
+  //   `void`.
+  //
+  //   NOTE: returning `void` in this case is different than that of STL
+  //   containers in general and `std::unordered_map` in particular (which
+  //   return an iterator to the element following the erased element). If that
+  //   iterator is needed, simply post increment the iterator:
+  //
+  //     map.erase(it++);
+  //
+  // iterator erase(const_iterator first, const_iterator last):
+  //
+  //   Erases the elements in the open interval [`first`, `last`), returning an
+  //   iterator pointing to `last`.
+  //
+  // size_type erase(const key_type& key):
+  //
+  //   Erases the element with the matching key, if it exists.
+  using Base::erase;
+
+  // flat_hash_map::insert()
+  //
+  // Inserts an element of the specified value into the `flat_hash_map`,
+  // returning an iterator pointing to the newly inserted element, provided that
+  // an element with the given key does not already exist. If rehashing occurs
+  // due to the insertion, all iterators are invalidated. Overloads are listed
+  // below.
+  //
+  // std::pair<iterator,bool> insert(const init_type& value):
+  //
+  //   Inserts a value into the `flat_hash_map`. Returns a pair consisting of an
+  //   iterator to the inserted element (or to the element that prevented the
+  //   insertion) and a bool denoting whether the insertion took place.
+  //
+  // std::pair<iterator,bool> insert(T&& value):
+  // std::pair<iterator,bool> insert(init_type&& value):
+  //
+  //   Inserts a moveable value into the `flat_hash_map`. Returns a pair
+  //   consisting of an iterator to the inserted element (or to the element that
+  //   prevented the insertion) and a bool denoting whether the insertion took
+  //   place.
+  //
+  // iterator insert(const_iterator hint, const init_type& value):
+  // iterator insert(const_iterator hint, T&& value):
+  // iterator insert(const_iterator hint, init_type&& value);
+  //
+  //   Inserts a value, using the position of `hint` as a non-binding suggestion
+  //   for where to begin the insertion search. Returns an iterator to the
+  //   inserted element, or to the existing element that prevented the
+  //   insertion.
+  //
+  // void insert(InputIterator first, InputIterator last):
+  //
+  //   Inserts a range of values [`first`, `last`).
+  //
+  //   NOTE: Although the STL does not specify which element may be inserted if
+  //   multiple keys compare equivalently, for `flat_hash_map` we guarantee the
+  //   first match is inserted.
+  //
+  // void insert(std::initializer_list<init_type> ilist):
+  //
+  //   Inserts the elements within the initializer list `ilist`.
+  //
+  //   NOTE: Although the STL does not specify which element may be inserted if
+  //   multiple keys compare equivalently within the initializer list, for
+  //   `flat_hash_map` we guarantee the first match is inserted.
+  using Base::insert;
+
+  // flat_hash_map::insert_or_assign()
+  //
+  // Inserts an element of the specified value into the `flat_hash_map` provided
+  // that a value with the given key does not already exist, or replaces it with
+  // the element value if a key for that value already exists, returning an
+  // iterator pointing to the newly inserted element.  If rehashing occurs due
+  // to the insertion, all existing iterators are invalidated. Overloads are
+  // listed below.
+  //
+  // pair<iterator, bool> insert_or_assign(const init_type& k, T&& obj):
+  // pair<iterator, bool> insert_or_assign(init_type&& k, T&& obj):
+  //
+  //   Inserts/Assigns (or moves) the element of the specified key into the
+  //   `flat_hash_map`.
+  //
+  // iterator insert_or_assign(const_iterator hint,
+  //                           const init_type& k, T&& obj):
+  // iterator insert_or_assign(const_iterator hint, init_type&& k, T&& obj):
+  //
+  //   Inserts/Assigns (or moves) the element of the specified key into the
+  //   `flat_hash_map` using the position of `hint` as a non-binding suggestion
+  //   for where to begin the insertion search.
+  using Base::insert_or_assign;
+
+  // flat_hash_map::emplace()
+  //
+  // Inserts an element of the specified value by constructing it in-place
+  // within the `flat_hash_map`, provided that no element with the given key
+  // already exists.
+  //
+  // The element may be constructed even if there already is an element with the
+  // key in the container, in which case the newly constructed element will be
+  // destroyed immediately. Prefer `try_emplace()` unless your key is not
+  // copyable or moveable.
+  //
+  // If rehashing occurs due to the insertion, all iterators are invalidated.
+  using Base::emplace;
+
+  // flat_hash_map::emplace_hint()
+  //
+  // Inserts an element of the specified value by constructing it in-place
+  // within the `flat_hash_map`, using the position of `hint` as a non-binding
+  // suggestion for where to begin the insertion search, and only inserts
+  // provided that no element with the given key already exists.
+  //
+  // The element may be constructed even if there already is an element with the
+  // key in the container, in which case the newly constructed element will be
+  // destroyed immediately. Prefer `try_emplace()` unless your key is not
+  // copyable or moveable.
+  //
+  // If rehashing occurs due to the insertion, all iterators are invalidated.
+  using Base::emplace_hint;
+
+  // flat_hash_map::try_emplace()
+  //
+  // Inserts an element of the specified value by constructing it in-place
+  // within the `flat_hash_map`, provided that no element with the given key
+  // already exists. Unlike `emplace()`, if an element with the given key
+  // already exists, we guarantee that no element is constructed.
+  //
+  // If rehashing occurs due to the insertion, all iterators are invalidated.
+  // Overloads are listed below.
+  //
+  //   pair<iterator, bool> try_emplace(const key_type& k, Args&&... args):
+  //   pair<iterator, bool> try_emplace(key_type&& k, Args&&... args):
+  //
+  // Inserts (via copy or move) the element of the specified key into the
+  // `flat_hash_map`.
+  //
+  //   iterator try_emplace(const_iterator hint,
+  //                        const init_type& k, Args&&... args):
+  //   iterator try_emplace(const_iterator hint, init_type&& k, Args&&... args):
+  //
+  // Inserts (via copy or move) the element of the specified key into the
+  // `flat_hash_map` using the position of `hint` as a non-binding suggestion
+  // for where to begin the insertion search.
+  //
+  // All `try_emplace()` overloads make the same guarantees regarding rvalue
+  // arguments as `std::unordered_map::try_emplace()`, namely that these
+  // functions will not move from rvalue arguments if insertions do not happen.
+  using Base::try_emplace;
+
+  // flat_hash_map::extract()
+  //
+  // Extracts the indicated element, erasing it in the process, and returns it
+  // as a C++17-compatible node handle. Overloads are listed below.
+  //
+  // node_type extract(const_iterator position):
+  //
+  //   Extracts the key,value pair of the element at the indicated position and
+  //   returns a node handle owning that extracted data.
+  //
+  // node_type extract(const key_type& x):
+  //
+  //   Extracts the key,value pair of the element with a key matching the passed
+  //   key value and returns a node handle owning that extracted data. If the
+  //   `flat_hash_map` does not contain an element with a matching key, this
+  //   function returns an empty node handle.
+  using Base::extract;
+
+  // flat_hash_map::merge()
+  //
+  // Extracts elements from a given `source` flat hash map into this
+  // `flat_hash_map`. If the destination `flat_hash_map` already contains an
+  // element with an equivalent key, that element is not extracted.
+  using Base::merge;
+
+  // flat_hash_map::swap(flat_hash_map& other)
+  //
+  // Exchanges the contents of this `flat_hash_map` with those of the `other`
+  // flat hash map, avoiding invocation of any move, copy, or swap operations on
+  // individual elements.
+  //
+  // All iterators and references on the `flat_hash_map` remain valid, excepting
+  // for the past-the-end iterator, which is invalidated.
+  //
+  // `swap()` requires that the flat hash map's hashing and key equivalence
+  // functions be Swappable, and are exchanged using unqualified calls to
+  // non-member `swap()`. If the map's allocator has
+  // `std::allocator_traits<allocator_type>::propagate_on_container_swap::value`
+  // set to `true`, the allocators are also exchanged using an unqualified call
+  // to non-member `swap()`; otherwise, the allocators are not swapped.
+  using Base::swap;
+
+  // flat_hash_map::rehash(count)
+  //
+  // Rehashes the `flat_hash_map`, setting the number of slots to be at least
+  // the passed value. If the new number of slots increases the load factor more
+  // than the current maximum load factor
+  // (`count` < `size()` / `max_load_factor()`), then the new number of slots
+  // will be at least `size()` / `max_load_factor()`.
+  //
+  // To force a rehash, pass rehash(0).
+  //
+  // NOTE: unlike behavior in `std::unordered_map`, references are also
+  // invalidated upon a `rehash()`.
+  using Base::rehash;
+
+  // flat_hash_map::reserve(count)
+  //
+  // Sets the number of slots in the `flat_hash_map` to the number needed to
+  // accommodate at least `count` total elements without exceeding the current
+  // maximum load factor, and may rehash the container if needed.
+  using Base::reserve;
+
+  // flat_hash_map::at()
+  //
+  // Returns a reference to the mapped value of the element with key equivalent
+  // to the passed key.
+  using Base::at;
+
+  // flat_hash_map::contains()
+  //
+  // Determines whether an element with a key comparing equal to the given `key`
+  // exists within the `flat_hash_map`, returning `true` if so or `false`
+  // otherwise.
+  using Base::contains;
+
+  // flat_hash_map::count(const Key& key) const
+  //
+  // Returns the number of elements with a key comparing equal to the given
+  // `key` within the `flat_hash_map`. note that this function will return
+  // either `1` or `0` since duplicate keys are not allowed within a
+  // `flat_hash_map`.
+  using Base::count;
+
+  // flat_hash_map::equal_range()
+  //
+  // Returns a closed range [first, last], defined by a `std::pair` of two
+  // iterators, containing all elements with the passed key in the
+  // `flat_hash_map`.
+  using Base::equal_range;
+
+  // flat_hash_map::find()
+  //
+  // Finds an element with the passed `key` within the `flat_hash_map`.
+  using Base::find;
+
+  // flat_hash_map::operator[]()
+  //
+  // Returns a reference to the value mapped to the passed key within the
+  // `flat_hash_map`, performing an `insert()` if the key does not already
+  // exist.
+  //
+  // If an insertion occurs and results in a rehashing of the container, all
+  // iterators are invalidated. Otherwise iterators are not affected and
+  // references are not invalidated. Overloads are listed below.
+  //
+  // T& operator[](const Key& key):
+  //
+  //   Inserts an init_type object constructed in-place if the element with the
+  //   given key does not exist.
+  //
+  // T& operator[](Key&& key):
+  //
+  //   Inserts an init_type object constructed in-place provided that an element
+  //   with the given key does not exist.
+  using Base::operator[];
+
+  // flat_hash_map::bucket_count()
+  //
+  // Returns the number of "buckets" within the `flat_hash_map`. Note that
+  // because a flat hash map contains all elements within its internal storage,
+  // this value simply equals the current capacity of the `flat_hash_map`.
+  using Base::bucket_count;
+
+  // flat_hash_map::load_factor()
+  //
+  // Returns the current load factor of the `flat_hash_map` (the average number
+  // of slots occupied with a value within the hash map).
+  using Base::load_factor;
+
+  // flat_hash_map::max_load_factor()
+  //
+  // Manages the maximum load factor of the `flat_hash_map`. Overloads are
+  // listed below.
+  //
+  // float flat_hash_map::max_load_factor()
+  //
+  //   Returns the current maximum load factor of the `flat_hash_map`.
+  //
+  // void flat_hash_map::max_load_factor(float ml)
+  //
+  //   Sets the maximum load factor of the `flat_hash_map` to the passed value.
+  //
+  //   NOTE: This overload is provided only for API compatibility with the STL;
+  //   `flat_hash_map` will ignore any set load factor and manage its rehashing
+  //   internally as an implementation detail.
+  using Base::max_load_factor;
+
+  // flat_hash_map::get_allocator()
+  //
+  // Returns the allocator function associated with this `flat_hash_map`.
+  using Base::get_allocator;
+
+  // flat_hash_map::hash_function()
+  //
+  // Returns the hashing function used to hash the keys within this
+  // `flat_hash_map`.
+  using Base::hash_function;
+
+  // flat_hash_map::key_eq()
+  //
+  // Returns the function used for comparing keys equality.
+  using Base::key_eq;
+};
+
+// erase_if(flat_hash_map<>, Pred)
+//
+// Erases all elements that satisfy the predicate `pred` from the container `c`.
+template <typename K, typename V, typename H, typename E, typename A,
+          typename Predicate>
+void erase_if(flat_hash_map<K, V, H, E, A>& c, Predicate pred) {
+  container_internal::EraseIf(pred, &c);
+}
+
+namespace container_internal {
+
+template <class K, class V>
+struct FlatHashMapPolicy {
+  using slot_policy = container_internal::map_slot_policy<K, V>;
+  using slot_type = typename slot_policy::slot_type;
+  using key_type = K;
+  using mapped_type = V;
+  using init_type = std::pair</*non const*/ key_type, mapped_type>;
+
+  template <class Allocator, class... Args>
+  static void construct(Allocator* alloc, slot_type* slot, Args&&... args) {
+    slot_policy::construct(alloc, slot, std::forward<Args>(args)...);
+  }
+
+  template <class Allocator>
+  static void destroy(Allocator* alloc, slot_type* slot) {
+    slot_policy::destroy(alloc, slot);
+  }
+
+  template <class Allocator>
+  static void transfer(Allocator* alloc, slot_type* new_slot,
+                       slot_type* old_slot) {
+    slot_policy::transfer(alloc, new_slot, old_slot);
+  }
+
+  template <class F, class... Args>
+  static decltype(absl::container_internal::DecomposePair(
+      std::declval<F>(), std::declval<Args>()...))
+  apply(F&& f, Args&&... args) {
+    return absl::container_internal::DecomposePair(std::forward<F>(f),
+                                                   std::forward<Args>(args)...);
+  }
+
+  static size_t space_used(const slot_type*) { return 0; }
+
+  static std::pair<const K, V>& element(slot_type* slot) { return slot->value; }
+
+  static V& value(std::pair<const K, V>* kv) { return kv->second; }
+  static const V& value(const std::pair<const K, V>* kv) { return kv->second; }
+};
+
+}  // namespace container_internal
+
+namespace container_algorithm_internal {
+
+// Specialization of trait in absl/algorithm/container.h
+template <class Key, class T, class Hash, class KeyEqual, class Allocator>
+struct IsUnorderedContainer<
+    absl::flat_hash_map<Key, T, Hash, KeyEqual, Allocator>> : std::true_type {};
+
+}  // namespace container_algorithm_internal
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_FLAT_HASH_MAP_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/inlined_vector.h b/ChattingApp 000/Pods/abseil/absl/container/inlined_vector.h
new file mode 100644
index 0000000..2388d47
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/inlined_vector.h	
@@ -0,0 +1,848 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: inlined_vector.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains the declaration and definition of an "inlined
+// vector" which behaves in an equivalent fashion to a `std::vector`, except
+// that storage for small sequences of the vector are provided inline without
+// requiring any heap allocation.
+//
+// An `absl::InlinedVector<T, N>` specifies the default capacity `N` as one of
+// its template parameters. Instances where `size() <= N` hold contained
+// elements in inline space. Typically `N` is very small so that sequences that
+// are expected to be short do not require allocations.
+//
+// An `absl::InlinedVector` does not usually require a specific allocator. If
+// the inlined vector grows beyond its initial constraints, it will need to
+// allocate (as any normal `std::vector` would). This is usually performed with
+// the default allocator (defined as `std::allocator<T>`). Optionally, a custom
+// allocator type may be specified as `A` in `absl::InlinedVector<T, N, A>`.
+
+#ifndef ABSL_CONTAINER_INLINED_VECTOR_H_
+#define ABSL_CONTAINER_INLINED_VECTOR_H_
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <initializer_list>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "absl/algorithm/algorithm.h"
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+#include "absl/container/internal/inlined_vector.h"
+#include "absl/memory/memory.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+// -----------------------------------------------------------------------------
+// InlinedVector
+// -----------------------------------------------------------------------------
+//
+// An `absl::InlinedVector` is designed to be a drop-in replacement for
+// `std::vector` for use cases where the vector's size is sufficiently small
+// that it can be inlined. If the inlined vector does grow beyond its estimated
+// capacity, it will trigger an initial allocation on the heap, and will behave
+// as a `std:vector`. The API of the `absl::InlinedVector` within this file is
+// designed to cover the same API footprint as covered by `std::vector`.
+template <typename T, size_t N, typename A = std::allocator<T>>
+class InlinedVector {
+  static_assert(N > 0, "`absl::InlinedVector` requires an inlined capacity.");
+
+  using Storage = inlined_vector_internal::Storage<T, N, A>;
+
+  using AllocatorTraits = typename Storage::AllocatorTraits;
+  using RValueReference = typename Storage::RValueReference;
+  using MoveIterator = typename Storage::MoveIterator;
+  using IsMemcpyOk = typename Storage::IsMemcpyOk;
+
+  template <typename Iterator>
+  using IteratorValueAdapter =
+      typename Storage::template IteratorValueAdapter<Iterator>;
+  using CopyValueAdapter = typename Storage::CopyValueAdapter;
+  using DefaultValueAdapter = typename Storage::DefaultValueAdapter;
+
+  template <typename Iterator>
+  using EnableIfAtLeastForwardIterator = absl::enable_if_t<
+      inlined_vector_internal::IsAtLeastForwardIterator<Iterator>::value>;
+  template <typename Iterator>
+  using DisableIfAtLeastForwardIterator = absl::enable_if_t<
+      !inlined_vector_internal::IsAtLeastForwardIterator<Iterator>::value>;
+
+ public:
+  using allocator_type = typename Storage::allocator_type;
+  using value_type = typename Storage::value_type;
+  using pointer = typename Storage::pointer;
+  using const_pointer = typename Storage::const_pointer;
+  using size_type = typename Storage::size_type;
+  using difference_type = typename Storage::difference_type;
+  using reference = typename Storage::reference;
+  using const_reference = typename Storage::const_reference;
+  using iterator = typename Storage::iterator;
+  using const_iterator = typename Storage::const_iterator;
+  using reverse_iterator = typename Storage::reverse_iterator;
+  using const_reverse_iterator = typename Storage::const_reverse_iterator;
+
+  // ---------------------------------------------------------------------------
+  // InlinedVector Constructors and Destructor
+  // ---------------------------------------------------------------------------
+
+  // Creates an empty inlined vector with a value-initialized allocator.
+  InlinedVector() noexcept(noexcept(allocator_type())) : storage_() {}
+
+  // Creates an empty inlined vector with a copy of `alloc`.
+  explicit InlinedVector(const allocator_type& alloc) noexcept
+      : storage_(alloc) {}
+
+  // Creates an inlined vector with `n` copies of `value_type()`.
+  explicit InlinedVector(size_type n,
+                         const allocator_type& alloc = allocator_type())
+      : storage_(alloc) {
+    storage_.Initialize(DefaultValueAdapter(), n);
+  }
+
+  // Creates an inlined vector with `n` copies of `v`.
+  InlinedVector(size_type n, const_reference v,
+                const allocator_type& alloc = allocator_type())
+      : storage_(alloc) {
+    storage_.Initialize(CopyValueAdapter(v), n);
+  }
+
+  // Creates an inlined vector with copies of the elements of `list`.
+  InlinedVector(std::initializer_list<value_type> list,
+                const allocator_type& alloc = allocator_type())
+      : InlinedVector(list.begin(), list.end(), alloc) {}
+
+  // Creates an inlined vector with elements constructed from the provided
+  // forward iterator range [`first`, `last`).
+  //
+  // NOTE: the `enable_if` prevents ambiguous interpretation between a call to
+  // this constructor with two integral arguments and a call to the above
+  // `InlinedVector(size_type, const_reference)` constructor.
+  template <typename ForwardIterator,
+            EnableIfAtLeastForwardIterator<ForwardIterator>* = nullptr>
+  InlinedVector(ForwardIterator first, ForwardIterator last,
+                const allocator_type& alloc = allocator_type())
+      : storage_(alloc) {
+    storage_.Initialize(IteratorValueAdapter<ForwardIterator>(first),
+                        std::distance(first, last));
+  }
+
+  // Creates an inlined vector with elements constructed from the provided input
+  // iterator range [`first`, `last`).
+  template <typename InputIterator,
+            DisableIfAtLeastForwardIterator<InputIterator>* = nullptr>
+  InlinedVector(InputIterator first, InputIterator last,
+                const allocator_type& alloc = allocator_type())
+      : storage_(alloc) {
+    std::copy(first, last, std::back_inserter(*this));
+  }
+
+  // Creates an inlined vector by copying the contents of `other` using
+  // `other`'s allocator.
+  InlinedVector(const InlinedVector& other)
+      : InlinedVector(other, *other.storage_.GetAllocPtr()) {}
+
+  // Creates an inlined vector by copying the contents of `other` using `alloc`.
+  InlinedVector(const InlinedVector& other, const allocator_type& alloc)
+      : storage_(alloc) {
+    if (IsMemcpyOk::value && !other.storage_.GetIsAllocated()) {
+      storage_.MemcpyFrom(other.storage_);
+    } else {
+      storage_.Initialize(IteratorValueAdapter<const_pointer>(other.data()),
+                          other.size());
+    }
+  }
+
+  // Creates an inlined vector by moving in the contents of `other` without
+  // allocating. If `other` contains allocated memory, the newly-created inlined
+  // vector will take ownership of that memory. However, if `other` does not
+  // contain allocated memory, the newly-created inlined vector will perform
+  // element-wise move construction of the contents of `other`.
+  //
+  // NOTE: since no allocation is performed for the inlined vector in either
+  // case, the `noexcept(...)` specification depends on whether moving the
+  // underlying objects can throw. It is assumed assumed that...
+  //  a) move constructors should only throw due to allocation failure.
+  //  b) if `value_type`'s move constructor allocates, it uses the same
+  //     allocation function as the inlined vector's allocator.
+  // Thus, the move constructor is non-throwing if the allocator is non-throwing
+  // or `value_type`'s move constructor is specified as `noexcept`.
+  InlinedVector(InlinedVector&& other) noexcept(
+      absl::allocator_is_nothrow<allocator_type>::value ||
+      std::is_nothrow_move_constructible<value_type>::value)
+      : storage_(*other.storage_.GetAllocPtr()) {
+    if (IsMemcpyOk::value) {
+      storage_.MemcpyFrom(other.storage_);
+
+      other.storage_.SetInlinedSize(0);
+    } else if (other.storage_.GetIsAllocated()) {
+      storage_.SetAllocatedData(other.storage_.GetAllocatedData(),
+                                other.storage_.GetAllocatedCapacity());
+      storage_.SetAllocatedSize(other.storage_.GetSize());
+
+      other.storage_.SetInlinedSize(0);
+    } else {
+      IteratorValueAdapter<MoveIterator> other_values(
+          MoveIterator(other.storage_.GetInlinedData()));
+
+      inlined_vector_internal::ConstructElements(
+          storage_.GetAllocPtr(), storage_.GetInlinedData(), &other_values,
+          other.storage_.GetSize());
+
+      storage_.SetInlinedSize(other.storage_.GetSize());
+    }
+  }
+
+  // Creates an inlined vector by moving in the contents of `other` with a copy
+  // of `alloc`.
+  //
+  // NOTE: if `other`'s allocator is not equal to `alloc`, even if `other`
+  // contains allocated memory, this move constructor will still allocate. Since
+  // allocation is performed, this constructor can only be `noexcept` if the
+  // specified allocator is also `noexcept`.
+  InlinedVector(InlinedVector&& other, const allocator_type& alloc) noexcept(
+      absl::allocator_is_nothrow<allocator_type>::value)
+      : storage_(alloc) {
+    if (IsMemcpyOk::value) {
+      storage_.MemcpyFrom(other.storage_);
+
+      other.storage_.SetInlinedSize(0);
+    } else if ((*storage_.GetAllocPtr() == *other.storage_.GetAllocPtr()) &&
+               other.storage_.GetIsAllocated()) {
+      storage_.SetAllocatedData(other.storage_.GetAllocatedData(),
+                                other.storage_.GetAllocatedCapacity());
+      storage_.SetAllocatedSize(other.storage_.GetSize());
+
+      other.storage_.SetInlinedSize(0);
+    } else {
+      storage_.Initialize(
+          IteratorValueAdapter<MoveIterator>(MoveIterator(other.data())),
+          other.size());
+    }
+  }
+
+  ~InlinedVector() {}
+
+  // ---------------------------------------------------------------------------
+  // InlinedVector Member Accessors
+  // ---------------------------------------------------------------------------
+
+  // `InlinedVector::empty()`
+  //
+  // Returns whether the inlined vector contains no elements.
+  bool empty() const noexcept { return !size(); }
+
+  // `InlinedVector::size()`
+  //
+  // Returns the number of elements in the inlined vector.
+  size_type size() const noexcept { return storage_.GetSize(); }
+
+  // `InlinedVector::max_size()`
+  //
+  // Returns the maximum number of elements the inlined vector can hold.
+  size_type max_size() const noexcept {
+    // One bit of the size storage is used to indicate whether the inlined
+    // vector contains allocated memory. As a result, the maximum size that the
+    // inlined vector can express is half of the max for `size_type`.
+    return (std::numeric_limits<size_type>::max)() / 2;
+  }
+
+  // `InlinedVector::capacity()`
+  //
+  // Returns the number of elements that could be stored in the inlined vector
+  // without requiring a reallocation.
+  //
+  // NOTE: for most inlined vectors, `capacity()` should be equal to the
+  // template parameter `N`. For inlined vectors which exceed this capacity,
+  // they will no longer be inlined and `capacity()` will equal the capactity of
+  // the allocated memory.
+  size_type capacity() const noexcept {
+    return storage_.GetIsAllocated() ? storage_.GetAllocatedCapacity()
+                                     : storage_.GetInlinedCapacity();
+  }
+
+  // `InlinedVector::data()`
+  //
+  // Returns a `pointer` to the elements of the inlined vector. This pointer
+  // can be used to access and modify the contained elements.
+  //
+  // NOTE: only elements within [`data()`, `data() + size()`) are valid.
+  pointer data() noexcept {
+    return storage_.GetIsAllocated() ? storage_.GetAllocatedData()
+                                     : storage_.GetInlinedData();
+  }
+
+  // Overload of `InlinedVector::data()` that returns a `const_pointer` to the
+  // elements of the inlined vector. This pointer can be used to access but not
+  // modify the contained elements.
+  //
+  // NOTE: only elements within [`data()`, `data() + size()`) are valid.
+  const_pointer data() const noexcept {
+    return storage_.GetIsAllocated() ? storage_.GetAllocatedData()
+                                     : storage_.GetInlinedData();
+  }
+
+  // `InlinedVector::operator[](...)`
+  //
+  // Returns a `reference` to the `i`th element of the inlined vector.
+  reference operator[](size_type i) {
+    assert(i < size());
+
+    return data()[i];
+  }
+
+  // Overload of `InlinedVector::operator[](...)` that returns a
+  // `const_reference` to the `i`th element of the inlined vector.
+  const_reference operator[](size_type i) const {
+    assert(i < size());
+
+    return data()[i];
+  }
+
+  // `InlinedVector::at(...)`
+  //
+  // Returns a `reference` to the `i`th element of the inlined vector.
+  //
+  // NOTE: if `i` is not within the required range of `InlinedVector::at(...)`,
+  // in both debug and non-debug builds, `std::out_of_range` will be thrown.
+  reference at(size_type i) {
+    if (ABSL_PREDICT_FALSE(i >= size())) {
+      base_internal::ThrowStdOutOfRange(
+          "`InlinedVector::at(size_type)` failed bounds check");
+    }
+
+    return data()[i];
+  }
+
+  // Overload of `InlinedVector::at(...)` that returns a `const_reference` to
+  // the `i`th element of the inlined vector.
+  //
+  // NOTE: if `i` is not within the required range of `InlinedVector::at(...)`,
+  // in both debug and non-debug builds, `std::out_of_range` will be thrown.
+  const_reference at(size_type i) const {
+    if (ABSL_PREDICT_FALSE(i >= size())) {
+      base_internal::ThrowStdOutOfRange(
+          "`InlinedVector::at(size_type) const` failed bounds check");
+    }
+
+    return data()[i];
+  }
+
+  // `InlinedVector::front()`
+  //
+  // Returns a `reference` to the first element of the inlined vector.
+  reference front() {
+    assert(!empty());
+
+    return at(0);
+  }
+
+  // Overload of `InlinedVector::front()` that returns a `const_reference` to
+  // the first element of the inlined vector.
+  const_reference front() const {
+    assert(!empty());
+
+    return at(0);
+  }
+
+  // `InlinedVector::back()`
+  //
+  // Returns a `reference` to the last element of the inlined vector.
+  reference back() {
+    assert(!empty());
+
+    return at(size() - 1);
+  }
+
+  // Overload of `InlinedVector::back()` that returns a `const_reference` to the
+  // last element of the inlined vector.
+  const_reference back() const {
+    assert(!empty());
+
+    return at(size() - 1);
+  }
+
+  // `InlinedVector::begin()`
+  //
+  // Returns an `iterator` to the beginning of the inlined vector.
+  iterator begin() noexcept { return data(); }
+
+  // Overload of `InlinedVector::begin()` that returns a `const_iterator` to
+  // the beginning of the inlined vector.
+  const_iterator begin() const noexcept { return data(); }
+
+  // `InlinedVector::end()`
+  //
+  // Returns an `iterator` to the end of the inlined vector.
+  iterator end() noexcept { return data() + size(); }
+
+  // Overload of `InlinedVector::end()` that returns a `const_iterator` to the
+  // end of the inlined vector.
+  const_iterator end() const noexcept { return data() + size(); }
+
+  // `InlinedVector::cbegin()`
+  //
+  // Returns a `const_iterator` to the beginning of the inlined vector.
+  const_iterator cbegin() const noexcept { return begin(); }
+
+  // `InlinedVector::cend()`
+  //
+  // Returns a `const_iterator` to the end of the inlined vector.
+  const_iterator cend() const noexcept { return end(); }
+
+  // `InlinedVector::rbegin()`
+  //
+  // Returns a `reverse_iterator` from the end of the inlined vector.
+  reverse_iterator rbegin() noexcept { return reverse_iterator(end()); }
+
+  // Overload of `InlinedVector::rbegin()` that returns a
+  // `const_reverse_iterator` from the end of the inlined vector.
+  const_reverse_iterator rbegin() const noexcept {
+    return const_reverse_iterator(end());
+  }
+
+  // `InlinedVector::rend()`
+  //
+  // Returns a `reverse_iterator` from the beginning of the inlined vector.
+  reverse_iterator rend() noexcept { return reverse_iterator(begin()); }
+
+  // Overload of `InlinedVector::rend()` that returns a `const_reverse_iterator`
+  // from the beginning of the inlined vector.
+  const_reverse_iterator rend() const noexcept {
+    return const_reverse_iterator(begin());
+  }
+
+  // `InlinedVector::crbegin()`
+  //
+  // Returns a `const_reverse_iterator` from the end of the inlined vector.
+  const_reverse_iterator crbegin() const noexcept { return rbegin(); }
+
+  // `InlinedVector::crend()`
+  //
+  // Returns a `const_reverse_iterator` from the beginning of the inlined
+  // vector.
+  const_reverse_iterator crend() const noexcept { return rend(); }
+
+  // `InlinedVector::get_allocator()`
+  //
+  // Returns a copy of the inlined vector's allocator.
+  allocator_type get_allocator() const { return *storage_.GetAllocPtr(); }
+
+  // ---------------------------------------------------------------------------
+  // InlinedVector Member Mutators
+  // ---------------------------------------------------------------------------
+
+  // `InlinedVector::operator=(...)`
+  //
+  // Replaces the elements of the inlined vector with copies of the elements of
+  // `list`.
+  InlinedVector& operator=(std::initializer_list<value_type> list) {
+    assign(list.begin(), list.end());
+
+    return *this;
+  }
+
+  // Overload of `InlinedVector::operator=(...)` that replaces the elements of
+  // the inlined vector with copies of the elements of `other`.
+  InlinedVector& operator=(const InlinedVector& other) {
+    if (ABSL_PREDICT_TRUE(this != std::addressof(other))) {
+      const_pointer other_data = other.data();
+      assign(other_data, other_data + other.size());
+    }
+
+    return *this;
+  }
+
+  // Overload of `InlinedVector::operator=(...)` that moves the elements of
+  // `other` into the inlined vector.
+  //
+  // NOTE: as a result of calling this overload, `other` is left in a valid but
+  // unspecified state.
+  InlinedVector& operator=(InlinedVector&& other) {
+    if (ABSL_PREDICT_TRUE(this != std::addressof(other))) {
+      if (IsMemcpyOk::value || other.storage_.GetIsAllocated()) {
+        inlined_vector_internal::DestroyElements(storage_.GetAllocPtr(), data(),
+                                                 size());
+        storage_.DeallocateIfAllocated();
+        storage_.MemcpyFrom(other.storage_);
+
+        other.storage_.SetInlinedSize(0);
+      } else {
+        storage_.Assign(IteratorValueAdapter<MoveIterator>(
+                            MoveIterator(other.storage_.GetInlinedData())),
+                        other.size());
+      }
+    }
+
+    return *this;
+  }
+
+  // `InlinedVector::assign(...)`
+  //
+  // Replaces the contents of the inlined vector with `n` copies of `v`.
+  void assign(size_type n, const_reference v) {
+    storage_.Assign(CopyValueAdapter(v), n);
+  }
+
+  // Overload of `InlinedVector::assign(...)` that replaces the contents of the
+  // inlined vector with copies of the elements of `list`.
+  void assign(std::initializer_list<value_type> list) {
+    assign(list.begin(), list.end());
+  }
+
+  // Overload of `InlinedVector::assign(...)` to replace the contents of the
+  // inlined vector with the range [`first`, `last`).
+  //
+  // NOTE: this overload is for iterators that are "forward" category or better.
+  template <typename ForwardIterator,
+            EnableIfAtLeastForwardIterator<ForwardIterator>* = nullptr>
+  void assign(ForwardIterator first, ForwardIterator last) {
+    storage_.Assign(IteratorValueAdapter<ForwardIterator>(first),
+                    std::distance(first, last));
+  }
+
+  // Overload of `InlinedVector::assign(...)` to replace the contents of the
+  // inlined vector with the range [`first`, `last`).
+  //
+  // NOTE: this overload is for iterators that are "input" category.
+  template <typename InputIterator,
+            DisableIfAtLeastForwardIterator<InputIterator>* = nullptr>
+  void assign(InputIterator first, InputIterator last) {
+    size_type i = 0;
+    for (; i < size() && first != last; ++i, static_cast<void>(++first)) {
+      at(i) = *first;
+    }
+
+    erase(data() + i, data() + size());
+    std::copy(first, last, std::back_inserter(*this));
+  }
+
+  // `InlinedVector::resize(...)`
+  //
+  // Resizes the inlined vector to contain `n` elements.
+  //
+  // NOTE: if `n` is smaller than `size()`, extra elements are destroyed. If `n`
+  // is larger than `size()`, new elements are value-initialized.
+  void resize(size_type n) { storage_.Resize(DefaultValueAdapter(), n); }
+
+  // Overload of `InlinedVector::resize(...)` that resizes the inlined vector to
+  // contain `n` elements.
+  //
+  // NOTE: if `n` is smaller than `size()`, extra elements are destroyed. If `n`
+  // is larger than `size()`, new elements are copied-constructed from `v`.
+  void resize(size_type n, const_reference v) {
+    storage_.Resize(CopyValueAdapter(v), n);
+  }
+
+  // `InlinedVector::insert(...)`
+  //
+  // Inserts a copy of `v` at `pos`, returning an `iterator` to the newly
+  // inserted element.
+  iterator insert(const_iterator pos, const_reference v) {
+    return emplace(pos, v);
+  }
+
+  // Overload of `InlinedVector::insert(...)` that inserts `v` at `pos` using
+  // move semantics, returning an `iterator` to the newly inserted element.
+  iterator insert(const_iterator pos, RValueReference v) {
+    return emplace(pos, std::move(v));
+  }
+
+  // Overload of `InlinedVector::insert(...)` that inserts `n` contiguous copies
+  // of `v` starting at `pos`, returning an `iterator` pointing to the first of
+  // the newly inserted elements.
+  iterator insert(const_iterator pos, size_type n, const_reference v) {
+    assert(pos >= begin());
+    assert(pos <= end());
+
+    if (ABSL_PREDICT_TRUE(n != 0)) {
+      value_type dealias = v;
+      return storage_.Insert(pos, CopyValueAdapter(dealias), n);
+    } else {
+      return const_cast<iterator>(pos);
+    }
+  }
+
+  // Overload of `InlinedVector::insert(...)` that inserts copies of the
+  // elements of `list` starting at `pos`, returning an `iterator` pointing to
+  // the first of the newly inserted elements.
+  iterator insert(const_iterator pos, std::initializer_list<value_type> list) {
+    return insert(pos, list.begin(), list.end());
+  }
+
+  // Overload of `InlinedVector::insert(...)` that inserts the range [`first`,
+  // `last`) starting at `pos`, returning an `iterator` pointing to the first
+  // of the newly inserted elements.
+  //
+  // NOTE: this overload is for iterators that are "forward" category or better.
+  template <typename ForwardIterator,
+            EnableIfAtLeastForwardIterator<ForwardIterator>* = nullptr>
+  iterator insert(const_iterator pos, ForwardIterator first,
+                  ForwardIterator last) {
+    assert(pos >= begin());
+    assert(pos <= end());
+
+    if (ABSL_PREDICT_TRUE(first != last)) {
+      return storage_.Insert(pos, IteratorValueAdapter<ForwardIterator>(first),
+                             std::distance(first, last));
+    } else {
+      return const_cast<iterator>(pos);
+    }
+  }
+
+  // Overload of `InlinedVector::insert(...)` that inserts the range [`first`,
+  // `last`) starting at `pos`, returning an `iterator` pointing to the first
+  // of the newly inserted elements.
+  //
+  // NOTE: this overload is for iterators that are "input" category.
+  template <typename InputIterator,
+            DisableIfAtLeastForwardIterator<InputIterator>* = nullptr>
+  iterator insert(const_iterator pos, InputIterator first, InputIterator last) {
+    assert(pos >= begin());
+    assert(pos <= end());
+
+    size_type index = std::distance(cbegin(), pos);
+    for (size_type i = index; first != last; ++i, static_cast<void>(++first)) {
+      insert(data() + i, *first);
+    }
+
+    return iterator(data() + index);
+  }
+
+  // `InlinedVector::emplace(...)`
+  //
+  // Constructs and inserts an element using `args...` in the inlined vector at
+  // `pos`, returning an `iterator` pointing to the newly emplaced element.
+  template <typename... Args>
+  iterator emplace(const_iterator pos, Args&&... args) {
+    assert(pos >= begin());
+    assert(pos <= end());
+
+    value_type dealias(std::forward<Args>(args)...);
+    return storage_.Insert(pos,
+                           IteratorValueAdapter<MoveIterator>(
+                               MoveIterator(std::addressof(dealias))),
+                           1);
+  }
+
+  // `InlinedVector::emplace_back(...)`
+  //
+  // Constructs and inserts an element using `args...` in the inlined vector at
+  // `end()`, returning a `reference` to the newly emplaced element.
+  template <typename... Args>
+  reference emplace_back(Args&&... args) {
+    return storage_.EmplaceBack(std::forward<Args>(args)...);
+  }
+
+  // `InlinedVector::push_back(...)`
+  //
+  // Inserts a copy of `v` in the inlined vector at `end()`.
+  void push_back(const_reference v) { static_cast<void>(emplace_back(v)); }
+
+  // Overload of `InlinedVector::push_back(...)` for inserting `v` at `end()`
+  // using move semantics.
+  void push_back(RValueReference v) {
+    static_cast<void>(emplace_back(std::move(v)));
+  }
+
+  // `InlinedVector::pop_back()`
+  //
+  // Destroys the element at `back()`, reducing the size by `1`.
+  void pop_back() noexcept {
+    assert(!empty());
+
+    AllocatorTraits::destroy(*storage_.GetAllocPtr(), data() + (size() - 1));
+    storage_.SubtractSize(1);
+  }
+
+  // `InlinedVector::erase(...)`
+  //
+  // Erases the element at `pos`, returning an `iterator` pointing to where the
+  // erased element was located.
+  //
+  // NOTE: may return `end()`, which is not dereferencable.
+  iterator erase(const_iterator pos) {
+    assert(pos >= begin());
+    assert(pos < end());
+
+    return storage_.Erase(pos, pos + 1);
+  }
+
+  // Overload of `InlinedVector::erase(...)` that erases every element in the
+  // range [`from`, `to`), returning an `iterator` pointing to where the first
+  // erased element was located.
+  //
+  // NOTE: may return `end()`, which is not dereferencable.
+  iterator erase(const_iterator from, const_iterator to) {
+    assert(from >= begin());
+    assert(from <= to);
+    assert(to <= end());
+
+    if (ABSL_PREDICT_TRUE(from != to)) {
+      return storage_.Erase(from, to);
+    } else {
+      return const_cast<iterator>(from);
+    }
+  }
+
+  // `InlinedVector::clear()`
+  //
+  // Destroys all elements in the inlined vector, setting the size to `0` and
+  // deallocating any held memory.
+  void clear() noexcept {
+    inlined_vector_internal::DestroyElements(storage_.GetAllocPtr(), data(),
+                                             size());
+    storage_.DeallocateIfAllocated();
+
+    storage_.SetInlinedSize(0);
+  }
+
+  // `InlinedVector::reserve(...)`
+  //
+  // Ensures that there is enough room for at least `n` elements.
+  void reserve(size_type n) { storage_.Reserve(n); }
+
+  // `InlinedVector::shrink_to_fit()`
+  //
+  // Reduces memory usage by freeing unused memory. After being called, calls to
+  // `capacity()` will be equal to `max(N, size())`.
+  //
+  // If `size() <= N` and the inlined vector contains allocated memory, the
+  // elements will all be moved to the inlined space and the allocated memory
+  // will be deallocated.
+  //
+  // If `size() > N` and `size() < capacity()`, the elements will be moved to a
+  // smaller allocation.
+  void shrink_to_fit() {
+    if (storage_.GetIsAllocated()) {
+      storage_.ShrinkToFit();
+    }
+  }
+
+  // `InlinedVector::swap(...)`
+  //
+  // Swaps the contents of the inlined vector with `other`.
+  void swap(InlinedVector& other) {
+    if (ABSL_PREDICT_TRUE(this != std::addressof(other))) {
+      storage_.Swap(std::addressof(other.storage_));
+    }
+  }
+
+ private:
+  template <typename H, typename TheT, size_t TheN, typename TheA>
+  friend H AbslHashValue(H h, const absl::InlinedVector<TheT, TheN, TheA>& a);
+
+  Storage storage_;
+};
+
+// -----------------------------------------------------------------------------
+// InlinedVector Non-Member Functions
+// -----------------------------------------------------------------------------
+
+// `swap(...)`
+//
+// Swaps the contents of two inlined vectors.
+template <typename T, size_t N, typename A>
+void swap(absl::InlinedVector<T, N, A>& a,
+          absl::InlinedVector<T, N, A>& b) noexcept(noexcept(a.swap(b))) {
+  a.swap(b);
+}
+
+// `operator==(...)`
+//
+// Tests for value-equality of two inlined vectors.
+template <typename T, size_t N, typename A>
+bool operator==(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
+  auto a_data = a.data();
+  auto b_data = b.data();
+  return absl::equal(a_data, a_data + a.size(), b_data, b_data + b.size());
+}
+
+// `operator!=(...)`
+//
+// Tests for value-inequality of two inlined vectors.
+template <typename T, size_t N, typename A>
+bool operator!=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
+  return !(a == b);
+}
+
+// `operator<(...)`
+//
+// Tests whether the value of an inlined vector is less than the value of
+// another inlined vector using a lexicographical comparison algorithm.
+template <typename T, size_t N, typename A>
+bool operator<(const absl::InlinedVector<T, N, A>& a,
+               const absl::InlinedVector<T, N, A>& b) {
+  auto a_data = a.data();
+  auto b_data = b.data();
+  return std::lexicographical_compare(a_data, a_data + a.size(), b_data,
+                                      b_data + b.size());
+}
+
+// `operator>(...)`
+//
+// Tests whether the value of an inlined vector is greater than the value of
+// another inlined vector using a lexicographical comparison algorithm.
+template <typename T, size_t N, typename A>
+bool operator>(const absl::InlinedVector<T, N, A>& a,
+               const absl::InlinedVector<T, N, A>& b) {
+  return b < a;
+}
+
+// `operator<=(...)`
+//
+// Tests whether the value of an inlined vector is less than or equal to the
+// value of another inlined vector using a lexicographical comparison algorithm.
+template <typename T, size_t N, typename A>
+bool operator<=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
+  return !(b < a);
+}
+
+// `operator>=(...)`
+//
+// Tests whether the value of an inlined vector is greater than or equal to the
+// value of another inlined vector using a lexicographical comparison algorithm.
+template <typename T, size_t N, typename A>
+bool operator>=(const absl::InlinedVector<T, N, A>& a,
+                const absl::InlinedVector<T, N, A>& b) {
+  return !(a < b);
+}
+
+// `AbslHashValue(...)`
+//
+// Provides `absl::Hash` support for `absl::InlinedVector`. It is uncommon to
+// call this directly.
+template <typename H, typename T, size_t N, typename A>
+H AbslHashValue(H h, const absl::InlinedVector<T, N, A>& a) {
+  auto size = a.size();
+  return H::combine(H::combine_contiguous(std::move(h), a.data(), size), size);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INLINED_VECTOR_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/common.h b/ChattingApp 000/Pods/abseil/absl/container/internal/common.h
new file mode 100644
index 0000000..5037d80
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/common.h	
@@ -0,0 +1,202 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_CONTAINER_INTERNAL_CONTAINER_H_
+#define ABSL_CONTAINER_INTERNAL_CONTAINER_H_
+
+#include <cassert>
+#include <type_traits>
+
+#include "absl/meta/type_traits.h"
+#include "absl/types/optional.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+template <class, class = void>
+struct IsTransparent : std::false_type {};
+template <class T>
+struct IsTransparent<T, absl::void_t<typename T::is_transparent>>
+    : std::true_type {};
+
+template <bool is_transparent>
+struct KeyArg {
+  // Transparent. Forward `K`.
+  template <typename K, typename key_type>
+  using type = K;
+};
+
+template <>
+struct KeyArg<false> {
+  // Not transparent. Always use `key_type`.
+  template <typename K, typename key_type>
+  using type = key_type;
+};
+
+// The node_handle concept from C++17.
+// We specialize node_handle for sets and maps. node_handle_base holds the
+// common API of both.
+template <typename PolicyTraits, typename Alloc>
+class node_handle_base {
+ protected:
+  using slot_type = typename PolicyTraits::slot_type;
+
+ public:
+  using allocator_type = Alloc;
+
+  constexpr node_handle_base() = default;
+  node_handle_base(node_handle_base&& other) noexcept {
+    *this = std::move(other);
+  }
+  ~node_handle_base() { destroy(); }
+  node_handle_base& operator=(node_handle_base&& other) noexcept {
+    destroy();
+    if (!other.empty()) {
+      alloc_ = other.alloc_;
+      PolicyTraits::transfer(alloc(), slot(), other.slot());
+      other.reset();
+    }
+    return *this;
+  }
+
+  bool empty() const noexcept { return !alloc_; }
+  explicit operator bool() const noexcept { return !empty(); }
+  allocator_type get_allocator() const { return *alloc_; }
+
+ protected:
+  friend struct CommonAccess;
+
+  struct transfer_tag_t {};
+  node_handle_base(transfer_tag_t, const allocator_type& a, slot_type* s)
+      : alloc_(a) {
+    PolicyTraits::transfer(alloc(), slot(), s);
+  }
+
+  struct move_tag_t {};
+  node_handle_base(move_tag_t, const allocator_type& a, slot_type* s)
+      : alloc_(a) {
+    PolicyTraits::construct(alloc(), slot(), s);
+  }
+
+  void destroy() {
+    if (!empty()) {
+      PolicyTraits::destroy(alloc(), slot());
+      reset();
+    }
+  }
+
+  void reset() {
+    assert(alloc_.has_value());
+    alloc_ = absl::nullopt;
+  }
+
+  slot_type* slot() const {
+    assert(!empty());
+    return reinterpret_cast<slot_type*>(std::addressof(slot_space_));
+  }
+  allocator_type* alloc() { return std::addressof(*alloc_); }
+
+ private:
+  absl::optional<allocator_type> alloc_ = {};
+  alignas(slot_type) mutable unsigned char slot_space_[sizeof(slot_type)] = {};
+};
+
+// For sets.
+template <typename Policy, typename PolicyTraits, typename Alloc,
+          typename = void>
+class node_handle : public node_handle_base<PolicyTraits, Alloc> {
+  using Base = node_handle_base<PolicyTraits, Alloc>;
+
+ public:
+  using value_type = typename PolicyTraits::value_type;
+
+  constexpr node_handle() {}
+
+  value_type& value() const { return PolicyTraits::element(this->slot()); }
+
+ private:
+  friend struct CommonAccess;
+
+  using Base::Base;
+};
+
+// For maps.
+template <typename Policy, typename PolicyTraits, typename Alloc>
+class node_handle<Policy, PolicyTraits, Alloc,
+                  absl::void_t<typename Policy::mapped_type>>
+    : public node_handle_base<PolicyTraits, Alloc> {
+  using Base = node_handle_base<PolicyTraits, Alloc>;
+
+ public:
+  using key_type = typename Policy::key_type;
+  using mapped_type = typename Policy::mapped_type;
+
+  constexpr node_handle() {}
+
+  auto key() const -> decltype(PolicyTraits::key(this->slot())) {
+    return PolicyTraits::key(this->slot());
+  }
+
+  mapped_type& mapped() const {
+    return PolicyTraits::value(&PolicyTraits::element(this->slot()));
+  }
+
+ private:
+  friend struct CommonAccess;
+
+  using Base::Base;
+};
+
+// Provide access to non-public node-handle functions.
+struct CommonAccess {
+  template <typename Node>
+  static auto GetSlot(const Node& node) -> decltype(node.slot()) {
+    return node.slot();
+  }
+
+  template <typename Node>
+  static void Destroy(Node* node) {
+    node->destroy();
+  }
+
+  template <typename Node>
+  static void Reset(Node* node) {
+    node->reset();
+  }
+
+  template <typename T, typename... Args>
+  static T Transfer(Args&&... args) {
+    return T(typename T::transfer_tag_t{}, std::forward<Args>(args)...);
+  }
+
+  template <typename T, typename... Args>
+  static T Move(Args&&... args) {
+    return T(typename T::move_tag_t{}, std::forward<Args>(args)...);
+  }
+};
+
+// Implement the insert_return_type<> concept of C++17.
+template <class Iterator, class NodeType>
+struct InsertReturnType {
+  Iterator position;
+  bool inserted;
+  NodeType node;
+};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_CONTAINER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/compressed_tuple.h b/ChattingApp 000/Pods/abseil/absl/container/internal/compressed_tuple.h
new file mode 100644
index 0000000..4bfe92f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/compressed_tuple.h	
@@ -0,0 +1,265 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper class to perform the Empty Base Optimization.
+// Ts can contain classes and non-classes, empty or not. For the ones that
+// are empty classes, we perform the optimization. If all types in Ts are empty
+// classes, then CompressedTuple<Ts...> is itself an empty class.
+//
+// To access the members, use member get<N>() function.
+//
+// Eg:
+//   absl::container_internal::CompressedTuple<int, T1, T2, T3> value(7, t1, t2,
+//                                                                    t3);
+//   assert(value.get<0>() == 7);
+//   T1& t1 = value.get<1>();
+//   const T2& t2 = value.get<2>();
+//   ...
+//
+// https://en.cppreference.com/w/cpp/language/ebo
+
+#ifndef ABSL_CONTAINER_INTERNAL_COMPRESSED_TUPLE_H_
+#define ABSL_CONTAINER_INTERNAL_COMPRESSED_TUPLE_H_
+
+#include <initializer_list>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "absl/utility/utility.h"
+
+#if defined(_MSC_VER) && !defined(__NVCC__)
+// We need to mark these classes with this declspec to ensure that
+// CompressedTuple happens.
+#define ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC __declspec(empty_bases)
+#else
+#define ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+template <typename... Ts>
+class CompressedTuple;
+
+namespace internal_compressed_tuple {
+
+template <typename D, size_t I>
+struct Elem;
+template <typename... B, size_t I>
+struct Elem<CompressedTuple<B...>, I>
+    : std::tuple_element<I, std::tuple<B...>> {};
+template <typename D, size_t I>
+using ElemT = typename Elem<D, I>::type;
+
+// Use the __is_final intrinsic if available. Where it's not available, classes
+// declared with the 'final' specifier cannot be used as CompressedTuple
+// elements.
+// TODO(sbenza): Replace this with std::is_final in C++14.
+template <typename T>
+constexpr bool IsFinal() {
+#if defined(__clang__) || defined(__GNUC__)
+  return __is_final(T);
+#else
+  return false;
+#endif
+}
+
+// We can't use EBCO on other CompressedTuples because that would mean that we
+// derive from multiple Storage<> instantiations with the same I parameter,
+// and potentially from multiple identical Storage<> instantiations.  So anytime
+// we use type inheritance rather than encapsulation, we mark
+// CompressedTupleImpl, to make this easy to detect.
+struct uses_inheritance {};
+
+template <typename T>
+constexpr bool ShouldUseBase() {
+  return std::is_class<T>::value && std::is_empty<T>::value && !IsFinal<T>() &&
+         !std::is_base_of<uses_inheritance, T>::value;
+}
+
+// The storage class provides two specializations:
+//  - For empty classes, it stores T as a base class.
+//  - For everything else, it stores T as a member.
+template <typename T, size_t I,
+#if defined(_MSC_VER)
+          bool UseBase =
+              ShouldUseBase<typename std::enable_if<true, T>::type>()>
+#else
+          bool UseBase = ShouldUseBase<T>()>
+#endif
+struct Storage {
+  T value;
+  constexpr Storage() = default;
+  template <typename V>
+  explicit constexpr Storage(absl::in_place_t, V&& v)
+      : value(absl::forward<V>(v)) {}
+  constexpr const T& get() const& { return value; }
+  T& get() & { return value; }
+  constexpr const T&& get() const&& { return absl::move(*this).value; }
+  T&& get() && { return std::move(*this).value; }
+};
+
+template <typename T, size_t I>
+struct ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC Storage<T, I, true> : T {
+  constexpr Storage() = default;
+
+  template <typename V>
+  explicit constexpr Storage(absl::in_place_t, V&& v)
+      : T(absl::forward<V>(v)) {}
+
+  constexpr const T& get() const& { return *this; }
+  T& get() & { return *this; }
+  constexpr const T&& get() const&& { return absl::move(*this); }
+  T&& get() && { return std::move(*this); }
+};
+
+template <typename D, typename I, bool ShouldAnyUseBase>
+struct ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC CompressedTupleImpl;
+
+template <typename... Ts, size_t... I, bool ShouldAnyUseBase>
+struct ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC CompressedTupleImpl<
+    CompressedTuple<Ts...>, absl::index_sequence<I...>, ShouldAnyUseBase>
+    // We use the dummy identity function through std::integral_constant to
+    // convince MSVC of accepting and expanding I in that context. Without it
+    // you would get:
+    //   error C3548: 'I': parameter pack cannot be used in this context
+    : uses_inheritance,
+      Storage<Ts, std::integral_constant<size_t, I>::value>... {
+  constexpr CompressedTupleImpl() = default;
+  template <typename... Vs>
+  explicit constexpr CompressedTupleImpl(absl::in_place_t, Vs&&... args)
+      : Storage<Ts, I>(absl::in_place, absl::forward<Vs>(args))... {}
+  friend CompressedTuple<Ts...>;
+};
+
+template <typename... Ts, size_t... I>
+struct ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC CompressedTupleImpl<
+    CompressedTuple<Ts...>, absl::index_sequence<I...>, false>
+    // We use the dummy identity function as above...
+    : Storage<Ts, std::integral_constant<size_t, I>::value, false>... {
+  constexpr CompressedTupleImpl() = default;
+  template <typename... Vs>
+  explicit constexpr CompressedTupleImpl(absl::in_place_t, Vs&&... args)
+      : Storage<Ts, I, false>(absl::in_place, absl::forward<Vs>(args))... {}
+  friend CompressedTuple<Ts...>;
+};
+
+std::false_type Or(std::initializer_list<std::false_type>);
+std::true_type Or(std::initializer_list<bool>);
+
+// MSVC requires this to be done separately rather than within the declaration
+// of CompressedTuple below.
+template <typename... Ts>
+constexpr bool ShouldAnyUseBase() {
+  return decltype(
+      Or({std::integral_constant<bool, ShouldUseBase<Ts>()>()...})){};
+}
+
+template <typename T, typename V>
+using TupleMoveConstructible = typename std::conditional<
+      std::is_reference<T>::value, std::is_convertible<V, T>,
+      std::is_constructible<T, V&&>>::type;
+
+}  // namespace internal_compressed_tuple
+
+// Helper class to perform the Empty Base Class Optimization.
+// Ts can contain classes and non-classes, empty or not. For the ones that
+// are empty classes, we perform the CompressedTuple. If all types in Ts are
+// empty classes, then CompressedTuple<Ts...> is itself an empty class.  (This
+// does not apply when one or more of those empty classes is itself an empty
+// CompressedTuple.)
+//
+// To access the members, use member .get<N>() function.
+//
+// Eg:
+//   absl::container_internal::CompressedTuple<int, T1, T2, T3> value(7, t1, t2,
+//                                                                    t3);
+//   assert(value.get<0>() == 7);
+//   T1& t1 = value.get<1>();
+//   const T2& t2 = value.get<2>();
+//   ...
+//
+// https://en.cppreference.com/w/cpp/language/ebo
+template <typename... Ts>
+class ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC CompressedTuple
+    : private internal_compressed_tuple::CompressedTupleImpl<
+          CompressedTuple<Ts...>, absl::index_sequence_for<Ts...>,
+          internal_compressed_tuple::ShouldAnyUseBase<Ts...>()> {
+ private:
+  template <int I>
+  using ElemT = internal_compressed_tuple::ElemT<CompressedTuple, I>;
+
+  template <int I>
+  using StorageT = internal_compressed_tuple::Storage<ElemT<I>, I>;
+
+ public:
+  // There seems to be a bug in MSVC dealing in which using '=default' here will
+  // cause the compiler to ignore the body of other constructors. The work-
+  // around is to explicitly implement the default constructor.
+#if defined(_MSC_VER)
+  constexpr CompressedTuple() : CompressedTuple::CompressedTupleImpl() {}
+#else
+  constexpr CompressedTuple() = default;
+#endif
+  explicit constexpr CompressedTuple(const Ts&... base)
+      : CompressedTuple::CompressedTupleImpl(absl::in_place, base...) {}
+
+  template <typename... Vs,
+            absl::enable_if_t<
+                absl::conjunction<
+                    // Ensure we are not hiding default copy/move constructors.
+                    absl::negation<std::is_same<void(CompressedTuple),
+                                                void(absl::decay_t<Vs>...)>>,
+                    internal_compressed_tuple::TupleMoveConstructible<
+                        Ts, Vs&&>...>::value,
+                bool> = true>
+  explicit constexpr CompressedTuple(Vs&&... base)
+      : CompressedTuple::CompressedTupleImpl(absl::in_place,
+                                             absl::forward<Vs>(base)...) {}
+
+  template <int I>
+  ElemT<I>& get() & {
+    return internal_compressed_tuple::Storage<ElemT<I>, I>::get();
+  }
+
+  template <int I>
+  constexpr const ElemT<I>& get() const& {
+    return StorageT<I>::get();
+  }
+
+  template <int I>
+  ElemT<I>&& get() && {
+    return std::move(*this).StorageT<I>::get();
+  }
+
+  template <int I>
+  constexpr const ElemT<I>&& get() const&& {
+    return absl::move(*this).StorageT<I>::get();
+  }
+};
+
+// Explicit specialization for a zero-element tuple
+// (needed to avoid ambiguous overloads for the default constructor).
+template <>
+class ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC CompressedTuple<> {};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef ABSL_INTERNAL_COMPRESSED_TUPLE_DECLSPEC
+
+#endif  // ABSL_CONTAINER_INTERNAL_COMPRESSED_TUPLE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/container_memory.h b/ChattingApp 000/Pods/abseil/absl/container/internal/container_memory.h
new file mode 100644
index 0000000..d24b0f8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/container_memory.h	
@@ -0,0 +1,440 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_CONTAINER_INTERNAL_CONTAINER_MEMORY_H_
+#define ABSL_CONTAINER_INTERNAL_CONTAINER_MEMORY_H_
+
+#ifdef ADDRESS_SANITIZER
+#include <sanitizer/asan_interface.h>
+#endif
+
+#ifdef MEMORY_SANITIZER
+#include <sanitizer/msan_interface.h>
+#endif
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "absl/memory/memory.h"
+#include "absl/utility/utility.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// Allocates at least n bytes aligned to the specified alignment.
+// Alignment must be a power of 2. It must be positive.
+//
+// Note that many allocators don't honor alignment requirements above certain
+// threshold (usually either alignof(std::max_align_t) or alignof(void*)).
+// Allocate() doesn't apply alignment corrections. If the underlying allocator
+// returns insufficiently alignment pointer, that's what you are going to get.
+template <size_t Alignment, class Alloc>
+void* Allocate(Alloc* alloc, size_t n) {
+  static_assert(Alignment > 0, "");
+  assert(n && "n must be positive");
+  struct alignas(Alignment) M {};
+  using A = typename absl::allocator_traits<Alloc>::template rebind_alloc<M>;
+  using AT = typename absl::allocator_traits<Alloc>::template rebind_traits<M>;
+  A mem_alloc(*alloc);
+  void* p = AT::allocate(mem_alloc, (n + sizeof(M) - 1) / sizeof(M));
+  assert(reinterpret_cast<uintptr_t>(p) % Alignment == 0 &&
+         "allocator does not respect alignment");
+  return p;
+}
+
+// The pointer must have been previously obtained by calling
+// Allocate<Alignment>(alloc, n).
+template <size_t Alignment, class Alloc>
+void Deallocate(Alloc* alloc, void* p, size_t n) {
+  static_assert(Alignment > 0, "");
+  assert(n && "n must be positive");
+  struct alignas(Alignment) M {};
+  using A = typename absl::allocator_traits<Alloc>::template rebind_alloc<M>;
+  using AT = typename absl::allocator_traits<Alloc>::template rebind_traits<M>;
+  A mem_alloc(*alloc);
+  AT::deallocate(mem_alloc, static_cast<M*>(p),
+                 (n + sizeof(M) - 1) / sizeof(M));
+}
+
+namespace memory_internal {
+
+// Constructs T into uninitialized storage pointed by `ptr` using the args
+// specified in the tuple.
+template <class Alloc, class T, class Tuple, size_t... I>
+void ConstructFromTupleImpl(Alloc* alloc, T* ptr, Tuple&& t,
+                            absl::index_sequence<I...>) {
+  absl::allocator_traits<Alloc>::construct(
+      *alloc, ptr, std::get<I>(std::forward<Tuple>(t))...);
+}
+
+template <class T, class F>
+struct WithConstructedImplF {
+  template <class... Args>
+  decltype(std::declval<F>()(std::declval<T>())) operator()(
+      Args&&... args) const {
+    return std::forward<F>(f)(T(std::forward<Args>(args)...));
+  }
+  F&& f;
+};
+
+template <class T, class Tuple, size_t... Is, class F>
+decltype(std::declval<F>()(std::declval<T>())) WithConstructedImpl(
+    Tuple&& t, absl::index_sequence<Is...>, F&& f) {
+  return WithConstructedImplF<T, F>{std::forward<F>(f)}(
+      std::get<Is>(std::forward<Tuple>(t))...);
+}
+
+template <class T, size_t... Is>
+auto TupleRefImpl(T&& t, absl::index_sequence<Is...>)
+    -> decltype(std::forward_as_tuple(std::get<Is>(std::forward<T>(t))...)) {
+  return std::forward_as_tuple(std::get<Is>(std::forward<T>(t))...);
+}
+
+// Returns a tuple of references to the elements of the input tuple. T must be a
+// tuple.
+template <class T>
+auto TupleRef(T&& t) -> decltype(
+    TupleRefImpl(std::forward<T>(t),
+                 absl::make_index_sequence<
+                     std::tuple_size<typename std::decay<T>::type>::value>())) {
+  return TupleRefImpl(
+      std::forward<T>(t),
+      absl::make_index_sequence<
+          std::tuple_size<typename std::decay<T>::type>::value>());
+}
+
+template <class F, class K, class V>
+decltype(std::declval<F>()(std::declval<const K&>(), std::piecewise_construct,
+                           std::declval<std::tuple<K>>(), std::declval<V>()))
+DecomposePairImpl(F&& f, std::pair<std::tuple<K>, V> p) {
+  const auto& key = std::get<0>(p.first);
+  return std::forward<F>(f)(key, std::piecewise_construct, std::move(p.first),
+                            std::move(p.second));
+}
+
+}  // namespace memory_internal
+
+// Constructs T into uninitialized storage pointed by `ptr` using the args
+// specified in the tuple.
+template <class Alloc, class T, class Tuple>
+void ConstructFromTuple(Alloc* alloc, T* ptr, Tuple&& t) {
+  memory_internal::ConstructFromTupleImpl(
+      alloc, ptr, std::forward<Tuple>(t),
+      absl::make_index_sequence<
+          std::tuple_size<typename std::decay<Tuple>::type>::value>());
+}
+
+// Constructs T using the args specified in the tuple and calls F with the
+// constructed value.
+template <class T, class Tuple, class F>
+decltype(std::declval<F>()(std::declval<T>())) WithConstructed(
+    Tuple&& t, F&& f) {
+  return memory_internal::WithConstructedImpl<T>(
+      std::forward<Tuple>(t),
+      absl::make_index_sequence<
+          std::tuple_size<typename std::decay<Tuple>::type>::value>(),
+      std::forward<F>(f));
+}
+
+// Given arguments of an std::pair's consructor, PairArgs() returns a pair of
+// tuples with references to the passed arguments. The tuples contain
+// constructor arguments for the first and the second elements of the pair.
+//
+// The following two snippets are equivalent.
+//
+// 1. std::pair<F, S> p(args...);
+//
+// 2. auto a = PairArgs(args...);
+//    std::pair<F, S> p(std::piecewise_construct,
+//                      std::move(p.first), std::move(p.second));
+inline std::pair<std::tuple<>, std::tuple<>> PairArgs() { return {}; }
+template <class F, class S>
+std::pair<std::tuple<F&&>, std::tuple<S&&>> PairArgs(F&& f, S&& s) {
+  return {std::piecewise_construct, std::forward_as_tuple(std::forward<F>(f)),
+          std::forward_as_tuple(std::forward<S>(s))};
+}
+template <class F, class S>
+std::pair<std::tuple<const F&>, std::tuple<const S&>> PairArgs(
+    const std::pair<F, S>& p) {
+  return PairArgs(p.first, p.second);
+}
+template <class F, class S>
+std::pair<std::tuple<F&&>, std::tuple<S&&>> PairArgs(std::pair<F, S>&& p) {
+  return PairArgs(std::forward<F>(p.first), std::forward<S>(p.second));
+}
+template <class F, class S>
+auto PairArgs(std::piecewise_construct_t, F&& f, S&& s)
+    -> decltype(std::make_pair(memory_internal::TupleRef(std::forward<F>(f)),
+                               memory_internal::TupleRef(std::forward<S>(s)))) {
+  return std::make_pair(memory_internal::TupleRef(std::forward<F>(f)),
+                        memory_internal::TupleRef(std::forward<S>(s)));
+}
+
+// A helper function for implementing apply() in map policies.
+template <class F, class... Args>
+auto DecomposePair(F&& f, Args&&... args)
+    -> decltype(memory_internal::DecomposePairImpl(
+        std::forward<F>(f), PairArgs(std::forward<Args>(args)...))) {
+  return memory_internal::DecomposePairImpl(
+      std::forward<F>(f), PairArgs(std::forward<Args>(args)...));
+}
+
+// A helper function for implementing apply() in set policies.
+template <class F, class Arg>
+decltype(std::declval<F>()(std::declval<const Arg&>(), std::declval<Arg>()))
+DecomposeValue(F&& f, Arg&& arg) {
+  const auto& key = arg;
+  return std::forward<F>(f)(key, std::forward<Arg>(arg));
+}
+
+// Helper functions for asan and msan.
+inline void SanitizerPoisonMemoryRegion(const void* m, size_t s) {
+#ifdef ADDRESS_SANITIZER
+  ASAN_POISON_MEMORY_REGION(m, s);
+#endif
+#ifdef MEMORY_SANITIZER
+  __msan_poison(m, s);
+#endif
+  (void)m;
+  (void)s;
+}
+
+inline void SanitizerUnpoisonMemoryRegion(const void* m, size_t s) {
+#ifdef ADDRESS_SANITIZER
+  ASAN_UNPOISON_MEMORY_REGION(m, s);
+#endif
+#ifdef MEMORY_SANITIZER
+  __msan_unpoison(m, s);
+#endif
+  (void)m;
+  (void)s;
+}
+
+template <typename T>
+inline void SanitizerPoisonObject(const T* object) {
+  SanitizerPoisonMemoryRegion(object, sizeof(T));
+}
+
+template <typename T>
+inline void SanitizerUnpoisonObject(const T* object) {
+  SanitizerUnpoisonMemoryRegion(object, sizeof(T));
+}
+
+namespace memory_internal {
+
+// If Pair is a standard-layout type, OffsetOf<Pair>::kFirst and
+// OffsetOf<Pair>::kSecond are equivalent to offsetof(Pair, first) and
+// offsetof(Pair, second) respectively. Otherwise they are -1.
+//
+// The purpose of OffsetOf is to avoid calling offsetof() on non-standard-layout
+// type, which is non-portable.
+template <class Pair, class = std::true_type>
+struct OffsetOf {
+  static constexpr size_t kFirst = -1;
+  static constexpr size_t kSecond = -1;
+};
+
+template <class Pair>
+struct OffsetOf<Pair, typename std::is_standard_layout<Pair>::type> {
+  static constexpr size_t kFirst = offsetof(Pair, first);
+  static constexpr size_t kSecond = offsetof(Pair, second);
+};
+
+template <class K, class V>
+struct IsLayoutCompatible {
+ private:
+  struct Pair {
+    K first;
+    V second;
+  };
+
+  // Is P layout-compatible with Pair?
+  template <class P>
+  static constexpr bool LayoutCompatible() {
+    return std::is_standard_layout<P>() && sizeof(P) == sizeof(Pair) &&
+           alignof(P) == alignof(Pair) &&
+           memory_internal::OffsetOf<P>::kFirst ==
+               memory_internal::OffsetOf<Pair>::kFirst &&
+           memory_internal::OffsetOf<P>::kSecond ==
+               memory_internal::OffsetOf<Pair>::kSecond;
+  }
+
+ public:
+  // Whether pair<const K, V> and pair<K, V> are layout-compatible. If they are,
+  // then it is safe to store them in a union and read from either.
+  static constexpr bool value = std::is_standard_layout<K>() &&
+                                std::is_standard_layout<Pair>() &&
+                                memory_internal::OffsetOf<Pair>::kFirst == 0 &&
+                                LayoutCompatible<std::pair<K, V>>() &&
+                                LayoutCompatible<std::pair<const K, V>>();
+};
+
+}  // namespace memory_internal
+
+// The internal storage type for key-value containers like flat_hash_map.
+//
+// It is convenient for the value_type of a flat_hash_map<K, V> to be
+// pair<const K, V>; the "const K" prevents accidental modification of the key
+// when dealing with the reference returned from find() and similar methods.
+// However, this creates other problems; we want to be able to emplace(K, V)
+// efficiently with move operations, and similarly be able to move a
+// pair<K, V> in insert().
+//
+// The solution is this union, which aliases the const and non-const versions
+// of the pair. This also allows flat_hash_map<const K, V> to work, even though
+// that has the same efficiency issues with move in emplace() and insert() -
+// but people do it anyway.
+//
+// If kMutableKeys is false, only the value member can be accessed.
+//
+// If kMutableKeys is true, key can be accessed through all slots while value
+// and mutable_value must be accessed only via INITIALIZED slots. Slots are
+// created and destroyed via mutable_value so that the key can be moved later.
+//
+// Accessing one of the union fields while the other is active is safe as
+// long as they are layout-compatible, which is guaranteed by the definition of
+// kMutableKeys. For C++11, the relevant section of the standard is
+// https://timsong-cpp.github.io/cppwp/n3337/class.mem#19 (9.2.19)
+template <class K, class V>
+union map_slot_type {
+  map_slot_type() {}
+  ~map_slot_type() = delete;
+  using value_type = std::pair<const K, V>;
+  using mutable_value_type = std::pair<K, V>;
+
+  value_type value;
+  mutable_value_type mutable_value;
+  K key;
+};
+
+template <class K, class V>
+struct map_slot_policy {
+  using slot_type = map_slot_type<K, V>;
+  using value_type = std::pair<const K, V>;
+  using mutable_value_type = std::pair<K, V>;
+
+ private:
+  static void emplace(slot_type* slot) {
+    // The construction of union doesn't do anything at runtime but it allows us
+    // to access its members without violating aliasing rules.
+    new (slot) slot_type;
+  }
+  // If pair<const K, V> and pair<K, V> are layout-compatible, we can accept one
+  // or the other via slot_type. We are also free to access the key via
+  // slot_type::key in this case.
+  using kMutableKeys = memory_internal::IsLayoutCompatible<K, V>;
+
+ public:
+  static value_type& element(slot_type* slot) { return slot->value; }
+  static const value_type& element(const slot_type* slot) {
+    return slot->value;
+  }
+
+  static const K& key(const slot_type* slot) {
+    return kMutableKeys::value ? slot->key : slot->value.first;
+  }
+
+  template <class Allocator, class... Args>
+  static void construct(Allocator* alloc, slot_type* slot, Args&&... args) {
+    emplace(slot);
+    if (kMutableKeys::value) {
+      absl::allocator_traits<Allocator>::construct(*alloc, &slot->mutable_value,
+                                                   std::forward<Args>(args)...);
+    } else {
+      absl::allocator_traits<Allocator>::construct(*alloc, &slot->value,
+                                                   std::forward<Args>(args)...);
+    }
+  }
+
+  // Construct this slot by moving from another slot.
+  template <class Allocator>
+  static void construct(Allocator* alloc, slot_type* slot, slot_type* other) {
+    emplace(slot);
+    if (kMutableKeys::value) {
+      absl::allocator_traits<Allocator>::construct(
+          *alloc, &slot->mutable_value, std::move(other->mutable_value));
+    } else {
+      absl::allocator_traits<Allocator>::construct(*alloc, &slot->value,
+                                                   std::move(other->value));
+    }
+  }
+
+  template <class Allocator>
+  static void destroy(Allocator* alloc, slot_type* slot) {
+    if (kMutableKeys::value) {
+      absl::allocator_traits<Allocator>::destroy(*alloc, &slot->mutable_value);
+    } else {
+      absl::allocator_traits<Allocator>::destroy(*alloc, &slot->value);
+    }
+  }
+
+  template <class Allocator>
+  static void transfer(Allocator* alloc, slot_type* new_slot,
+                       slot_type* old_slot) {
+    emplace(new_slot);
+    if (kMutableKeys::value) {
+      absl::allocator_traits<Allocator>::construct(
+          *alloc, &new_slot->mutable_value, std::move(old_slot->mutable_value));
+    } else {
+      absl::allocator_traits<Allocator>::construct(*alloc, &new_slot->value,
+                                                   std::move(old_slot->value));
+    }
+    destroy(alloc, old_slot);
+  }
+
+  template <class Allocator>
+  static void swap(Allocator* alloc, slot_type* a, slot_type* b) {
+    if (kMutableKeys::value) {
+      using std::swap;
+      swap(a->mutable_value, b->mutable_value);
+    } else {
+      value_type tmp = std::move(a->value);
+      absl::allocator_traits<Allocator>::destroy(*alloc, &a->value);
+      absl::allocator_traits<Allocator>::construct(*alloc, &a->value,
+                                                   std::move(b->value));
+      absl::allocator_traits<Allocator>::destroy(*alloc, &b->value);
+      absl::allocator_traits<Allocator>::construct(*alloc, &b->value,
+                                                   std::move(tmp));
+    }
+  }
+
+  template <class Allocator>
+  static void move(Allocator* alloc, slot_type* src, slot_type* dest) {
+    if (kMutableKeys::value) {
+      dest->mutable_value = std::move(src->mutable_value);
+    } else {
+      absl::allocator_traits<Allocator>::destroy(*alloc, &dest->value);
+      absl::allocator_traits<Allocator>::construct(*alloc, &dest->value,
+                                                   std::move(src->value));
+    }
+  }
+
+  template <class Allocator>
+  static void move(Allocator* alloc, slot_type* first, slot_type* last,
+                   slot_type* result) {
+    for (slot_type *src = first, *dest = result; src != last; ++src, ++dest)
+      move(alloc, src, dest);
+  }
+};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_CONTAINER_MEMORY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hash_function_defaults.h b/ChattingApp 000/Pods/abseil/absl/container/internal/hash_function_defaults.h
new file mode 100644
index 0000000..401ddf4
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hash_function_defaults.h	
@@ -0,0 +1,146 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Define the default Hash and Eq functions for SwissTable containers.
+//
+// std::hash<T> and std::equal_to<T> are not appropriate hash and equal
+// functions for SwissTable containers. There are two reasons for this.
+//
+// SwissTable containers are power of 2 sized containers:
+//
+// This means they use the lower bits of the hash value to find the slot for
+// each entry. The typical hash function for integral types is the identity.
+// This is a very weak hash function for SwissTable and any power of 2 sized
+// hashtable implementation which will lead to excessive collisions. For
+// SwissTable we use murmur3 style mixing to reduce collisions to a minimum.
+//
+// SwissTable containers support heterogeneous lookup:
+//
+// In order to make heterogeneous lookup work, hash and equal functions must be
+// polymorphic. At the same time they have to satisfy the same requirements the
+// C++ standard imposes on hash functions and equality operators. That is:
+//
+//   if hash_default_eq<T>(a, b) returns true for any a and b of type T, then
+//   hash_default_hash<T>(a) must equal hash_default_hash<T>(b)
+//
+// For SwissTable containers this requirement is relaxed to allow a and b of
+// any and possibly different types. Note that like the standard the hash and
+// equal functions are still bound to T. This is important because some type U
+// can be hashed by/tested for equality differently depending on T. A notable
+// example is `const char*`. `const char*` is treated as a c-style string when
+// the hash function is hash<std::string> but as a pointer when the hash
+// function is hash<void*>.
+//
+#ifndef ABSL_CONTAINER_INTERNAL_HASH_FUNCTION_DEFAULTS_H_
+#define ABSL_CONTAINER_INTERNAL_HASH_FUNCTION_DEFAULTS_H_
+
+#include <stdint.h>
+#include <cstddef>
+#include <memory>
+#include <string>
+#include <type_traits>
+
+#include "absl/base/config.h"
+#include "absl/hash/hash.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// The hash of an object of type T is computed by using absl::Hash.
+template <class T, class E = void>
+struct HashEq {
+  using Hash = absl::Hash<T>;
+  using Eq = std::equal_to<T>;
+};
+
+struct StringHash {
+  using is_transparent = void;
+
+  size_t operator()(absl::string_view v) const {
+    return absl::Hash<absl::string_view>{}(v);
+  }
+};
+
+// Supports heterogeneous lookup for string-like elements.
+struct StringHashEq {
+  using Hash = StringHash;
+  struct Eq {
+    using is_transparent = void;
+    bool operator()(absl::string_view lhs, absl::string_view rhs) const {
+      return lhs == rhs;
+    }
+  };
+};
+
+template <>
+struct HashEq<std::string> : StringHashEq {};
+template <>
+struct HashEq<absl::string_view> : StringHashEq {};
+
+// Supports heterogeneous lookup for pointers and smart pointers.
+template <class T>
+struct HashEq<T*> {
+  struct Hash {
+    using is_transparent = void;
+    template <class U>
+    size_t operator()(const U& ptr) const {
+      return absl::Hash<const T*>{}(HashEq::ToPtr(ptr));
+    }
+  };
+  struct Eq {
+    using is_transparent = void;
+    template <class A, class B>
+    bool operator()(const A& a, const B& b) const {
+      return HashEq::ToPtr(a) == HashEq::ToPtr(b);
+    }
+  };
+
+ private:
+  static const T* ToPtr(const T* ptr) { return ptr; }
+  template <class U, class D>
+  static const T* ToPtr(const std::unique_ptr<U, D>& ptr) {
+    return ptr.get();
+  }
+  template <class U>
+  static const T* ToPtr(const std::shared_ptr<U>& ptr) {
+    return ptr.get();
+  }
+};
+
+template <class T, class D>
+struct HashEq<std::unique_ptr<T, D>> : HashEq<T*> {};
+template <class T>
+struct HashEq<std::shared_ptr<T>> : HashEq<T*> {};
+
+// This header's visibility is restricted.  If you need to access the default
+// hasher please use the container's ::hasher alias instead.
+//
+// Example: typename Hash = typename absl::flat_hash_map<K, V>::hasher
+template <class T>
+using hash_default_hash = typename container_internal::HashEq<T>::Hash;
+
+// This header's visibility is restricted.  If you need to access the default
+// key equal please use the container's ::key_equal alias instead.
+//
+// Example: typename Eq = typename absl::flat_hash_map<K, V, Hash>::key_equal
+template <class T>
+using hash_default_eq = typename container_internal::HashEq<T>::Eq;
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_HASH_FUNCTION_DEFAULTS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hash_policy_traits.h b/ChattingApp 000/Pods/abseil/absl/container/internal/hash_policy_traits.h
new file mode 100644
index 0000000..3e1209c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hash_policy_traits.h	
@@ -0,0 +1,191 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_CONTAINER_INTERNAL_HASH_POLICY_TRAITS_H_
+#define ABSL_CONTAINER_INTERNAL_HASH_POLICY_TRAITS_H_
+
+#include <cstddef>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// Defines how slots are initialized/destroyed/moved.
+template <class Policy, class = void>
+struct hash_policy_traits {
+ private:
+  struct ReturnKey {
+    // We return `Key` here.
+    // When Key=T&, we forward the lvalue reference.
+    // When Key=T, we return by value to avoid a dangling reference.
+    // eg, for string_hash_map.
+    template <class Key, class... Args>
+    Key operator()(Key&& k, const Args&...) const {
+      return std::forward<Key>(k);
+    }
+  };
+
+  template <class P = Policy, class = void>
+  struct ConstantIteratorsImpl : std::false_type {};
+
+  template <class P>
+  struct ConstantIteratorsImpl<P, absl::void_t<typename P::constant_iterators>>
+      : P::constant_iterators {};
+
+ public:
+  // The actual object stored in the hash table.
+  using slot_type = typename Policy::slot_type;
+
+  // The type of the keys stored in the hashtable.
+  using key_type = typename Policy::key_type;
+
+  // The argument type for insertions into the hashtable. This is different
+  // from value_type for increased performance. See initializer_list constructor
+  // and insert() member functions for more details.
+  using init_type = typename Policy::init_type;
+
+  using reference = decltype(Policy::element(std::declval<slot_type*>()));
+  using pointer = typename std::remove_reference<reference>::type*;
+  using value_type = typename std::remove_reference<reference>::type;
+
+  // Policies can set this variable to tell raw_hash_set that all iterators
+  // should be constant, even `iterator`. This is useful for set-like
+  // containers.
+  // Defaults to false if not provided by the policy.
+  using constant_iterators = ConstantIteratorsImpl<>;
+
+  // PRECONDITION: `slot` is UNINITIALIZED
+  // POSTCONDITION: `slot` is INITIALIZED
+  template <class Alloc, class... Args>
+  static void construct(Alloc* alloc, slot_type* slot, Args&&... args) {
+    Policy::construct(alloc, slot, std::forward<Args>(args)...);
+  }
+
+  // PRECONDITION: `slot` is INITIALIZED
+  // POSTCONDITION: `slot` is UNINITIALIZED
+  template <class Alloc>
+  static void destroy(Alloc* alloc, slot_type* slot) {
+    Policy::destroy(alloc, slot);
+  }
+
+  // Transfers the `old_slot` to `new_slot`. Any memory allocated by the
+  // allocator inside `old_slot` to `new_slot` can be transferred.
+  //
+  // OPTIONAL: defaults to:
+  //
+  //     clone(new_slot, std::move(*old_slot));
+  //     destroy(old_slot);
+  //
+  // PRECONDITION: `new_slot` is UNINITIALIZED and `old_slot` is INITIALIZED
+  // POSTCONDITION: `new_slot` is INITIALIZED and `old_slot` is
+  //                UNINITIALIZED
+  template <class Alloc>
+  static void transfer(Alloc* alloc, slot_type* new_slot, slot_type* old_slot) {
+    transfer_impl(alloc, new_slot, old_slot, 0);
+  }
+
+  // PRECONDITION: `slot` is INITIALIZED
+  // POSTCONDITION: `slot` is INITIALIZED
+  template <class P = Policy>
+  static auto element(slot_type* slot) -> decltype(P::element(slot)) {
+    return P::element(slot);
+  }
+
+  // Returns the amount of memory owned by `slot`, exclusive of `sizeof(*slot)`.
+  //
+  // If `slot` is nullptr, returns the constant amount of memory owned by any
+  // full slot or -1 if slots own variable amounts of memory.
+  //
+  // PRECONDITION: `slot` is INITIALIZED or nullptr
+  template <class P = Policy>
+  static size_t space_used(const slot_type* slot) {
+    return P::space_used(slot);
+  }
+
+  // Provides generalized access to the key for elements, both for elements in
+  // the table and for elements that have not yet been inserted (or even
+  // constructed).  We would like an API that allows us to say: `key(args...)`
+  // but we cannot do that for all cases, so we use this more general API that
+  // can be used for many things, including the following:
+  //
+  //   - Given an element in a table, get its key.
+  //   - Given an element initializer, get its key.
+  //   - Given `emplace()` arguments, get the element key.
+  //
+  // Implementations of this must adhere to a very strict technical
+  // specification around aliasing and consuming arguments:
+  //
+  // Let `value_type` be the result type of `element()` without ref- and
+  // cv-qualifiers. The first argument is a functor, the rest are constructor
+  // arguments for `value_type`. Returns `std::forward<F>(f)(k, xs...)`, where
+  // `k` is the element key, and `xs...` are the new constructor arguments for
+  // `value_type`. It's allowed for `k` to alias `xs...`, and for both to alias
+  // `ts...`. The key won't be touched once `xs...` are used to construct an
+  // element; `ts...` won't be touched at all, which allows `apply()` to consume
+  // any rvalues among them.
+  //
+  // If `value_type` is constructible from `Ts&&...`, `Policy::apply()` must not
+  // trigger a hard compile error unless it originates from `f`. In other words,
+  // `Policy::apply()` must be SFINAE-friendly. If `value_type` is not
+  // constructible from `Ts&&...`, either SFINAE or a hard compile error is OK.
+  //
+  // If `Ts...` is `[cv] value_type[&]` or `[cv] init_type[&]`,
+  // `Policy::apply()` must work. A compile error is not allowed, SFINAE or not.
+  template <class F, class... Ts, class P = Policy>
+  static auto apply(F&& f, Ts&&... ts)
+      -> decltype(P::apply(std::forward<F>(f), std::forward<Ts>(ts)...)) {
+    return P::apply(std::forward<F>(f), std::forward<Ts>(ts)...);
+  }
+
+  // Returns the "key" portion of the slot.
+  // Used for node handle manipulation.
+  template <class P = Policy>
+  static auto key(slot_type* slot)
+      -> decltype(P::apply(ReturnKey(), element(slot))) {
+    return P::apply(ReturnKey(), element(slot));
+  }
+
+  // Returns the "value" (as opposed to the "key") portion of the element. Used
+  // by maps to implement `operator[]`, `at()` and `insert_or_assign()`.
+  template <class T, class P = Policy>
+  static auto value(T* elem) -> decltype(P::value(elem)) {
+    return P::value(elem);
+  }
+
+ private:
+  // Use auto -> decltype as an enabler.
+  template <class Alloc, class P = Policy>
+  static auto transfer_impl(Alloc* alloc, slot_type* new_slot,
+                            slot_type* old_slot, int)
+      -> decltype((void)P::transfer(alloc, new_slot, old_slot)) {
+    P::transfer(alloc, new_slot, old_slot);
+  }
+  template <class Alloc>
+  static void transfer_impl(Alloc* alloc, slot_type* new_slot,
+                            slot_type* old_slot, char) {
+    construct(alloc, new_slot, std::move(element(old_slot)));
+    destroy(alloc, old_slot);
+  }
+};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_HASH_POLICY_TRAITS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hashtable_debug_hooks.h b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtable_debug_hooks.h
new file mode 100644
index 0000000..3e9ea59
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtable_debug_hooks.h	
@@ -0,0 +1,85 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Provides the internal API for hashtable_debug.h.
+
+#ifndef ABSL_CONTAINER_INTERNAL_HASHTABLE_DEBUG_HOOKS_H_
+#define ABSL_CONTAINER_INTERNAL_HASHTABLE_DEBUG_HOOKS_H_
+
+#include <cstddef>
+
+#include <algorithm>
+#include <type_traits>
+#include <vector>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+namespace hashtable_debug_internal {
+
+// If it is a map, call get<0>().
+using std::get;
+template <typename T, typename = typename T::mapped_type>
+auto GetKey(const typename T::value_type& pair, int) -> decltype(get<0>(pair)) {
+  return get<0>(pair);
+}
+
+// If it is not a map, return the value directly.
+template <typename T>
+const typename T::key_type& GetKey(const typename T::key_type& key, char) {
+  return key;
+}
+
+// Containers should specialize this to provide debug information for that
+// container.
+template <class Container, typename Enabler = void>
+struct HashtableDebugAccess {
+  // Returns the number of probes required to find `key` in `c`.  The "number of
+  // probes" is a concept that can vary by container.  Implementations should
+  // return 0 when `key` was found in the minimum number of operations and
+  // should increment the result for each non-trivial operation required to find
+  // `key`.
+  //
+  // The default implementation uses the bucket api from the standard and thus
+  // works for `std::unordered_*` containers.
+  static size_t GetNumProbes(const Container& c,
+                             const typename Container::key_type& key) {
+    if (!c.bucket_count()) return {};
+    size_t num_probes = 0;
+    size_t bucket = c.bucket(key);
+    for (auto it = c.begin(bucket), e = c.end(bucket);; ++it, ++num_probes) {
+      if (it == e) return num_probes;
+      if (c.key_eq()(key, GetKey<Container>(*it, 0))) return num_probes;
+    }
+  }
+
+  // Returns the number of bytes requested from the allocator by the container
+  // and not freed.
+  //
+  // static size_t AllocatedByteSize(const Container& c);
+
+  // Returns a tight lower bound for AllocatedByteSize(c) where `c` is of type
+  // `Container` and `c.size()` is equal to `num_elements`.
+  //
+  // static size_t LowerBoundAllocatedByteSize(size_t num_elements);
+};
+
+}  // namespace hashtable_debug_internal
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_HASHTABLE_DEBUG_HOOKS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.cc b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.cc
new file mode 100644
index 0000000..5644725
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.cc	
@@ -0,0 +1,269 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/container/internal/hashtablez_sampler.h"
+
+#include <atomic>
+#include <cassert>
+#include <cmath>
+#include <functional>
+#include <limits>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/exponential_biased.h"
+#include "absl/container/internal/have_sse.h"
+#include "absl/debugging/stacktrace.h"
+#include "absl/memory/memory.h"
+#include "absl/synchronization/mutex.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+constexpr int HashtablezInfo::kMaxStackDepth;
+
+namespace {
+ABSL_CONST_INIT std::atomic<bool> g_hashtablez_enabled{
+    false
+};
+ABSL_CONST_INIT std::atomic<int32_t> g_hashtablez_sample_parameter{1 << 10};
+ABSL_CONST_INIT std::atomic<int32_t> g_hashtablez_max_samples{1 << 20};
+
+#if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+ABSL_PER_THREAD_TLS_KEYWORD absl::base_internal::ExponentialBiased
+    g_exponential_biased_generator;
+#endif
+
+}  // namespace
+
+#if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+ABSL_PER_THREAD_TLS_KEYWORD int64_t global_next_sample = 0;
+#endif  // defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+
+HashtablezSampler& HashtablezSampler::Global() {
+  static auto* sampler = new HashtablezSampler();
+  return *sampler;
+}
+
+HashtablezSampler::DisposeCallback HashtablezSampler::SetDisposeCallback(
+    DisposeCallback f) {
+  return dispose_.exchange(f, std::memory_order_relaxed);
+}
+
+HashtablezInfo::HashtablezInfo() { PrepareForSampling(); }
+HashtablezInfo::~HashtablezInfo() = default;
+
+void HashtablezInfo::PrepareForSampling() {
+  capacity.store(0, std::memory_order_relaxed);
+  size.store(0, std::memory_order_relaxed);
+  num_erases.store(0, std::memory_order_relaxed);
+  max_probe_length.store(0, std::memory_order_relaxed);
+  total_probe_length.store(0, std::memory_order_relaxed);
+  hashes_bitwise_or.store(0, std::memory_order_relaxed);
+  hashes_bitwise_and.store(~size_t{}, std::memory_order_relaxed);
+
+  create_time = absl::Now();
+  // The inliner makes hardcoded skip_count difficult (especially when combined
+  // with LTO).  We use the ability to exclude stacks by regex when encoding
+  // instead.
+  depth = absl::GetStackTrace(stack, HashtablezInfo::kMaxStackDepth,
+                              /* skip_count= */ 0);
+  dead = nullptr;
+}
+
+HashtablezSampler::HashtablezSampler()
+    : dropped_samples_(0), size_estimate_(0), all_(nullptr), dispose_(nullptr) {
+  absl::MutexLock l(&graveyard_.init_mu);
+  graveyard_.dead = &graveyard_;
+}
+
+HashtablezSampler::~HashtablezSampler() {
+  HashtablezInfo* s = all_.load(std::memory_order_acquire);
+  while (s != nullptr) {
+    HashtablezInfo* next = s->next;
+    delete s;
+    s = next;
+  }
+}
+
+void HashtablezSampler::PushNew(HashtablezInfo* sample) {
+  sample->next = all_.load(std::memory_order_relaxed);
+  while (!all_.compare_exchange_weak(sample->next, sample,
+                                     std::memory_order_release,
+                                     std::memory_order_relaxed)) {
+  }
+}
+
+void HashtablezSampler::PushDead(HashtablezInfo* sample) {
+  if (auto* dispose = dispose_.load(std::memory_order_relaxed)) {
+    dispose(*sample);
+  }
+
+  absl::MutexLock graveyard_lock(&graveyard_.init_mu);
+  absl::MutexLock sample_lock(&sample->init_mu);
+  sample->dead = graveyard_.dead;
+  graveyard_.dead = sample;
+}
+
+HashtablezInfo* HashtablezSampler::PopDead() {
+  absl::MutexLock graveyard_lock(&graveyard_.init_mu);
+
+  // The list is circular, so eventually it collapses down to
+  //   graveyard_.dead == &graveyard_
+  // when it is empty.
+  HashtablezInfo* sample = graveyard_.dead;
+  if (sample == &graveyard_) return nullptr;
+
+  absl::MutexLock sample_lock(&sample->init_mu);
+  graveyard_.dead = sample->dead;
+  sample->PrepareForSampling();
+  return sample;
+}
+
+HashtablezInfo* HashtablezSampler::Register() {
+  int64_t size = size_estimate_.fetch_add(1, std::memory_order_relaxed);
+  if (size > g_hashtablez_max_samples.load(std::memory_order_relaxed)) {
+    size_estimate_.fetch_sub(1, std::memory_order_relaxed);
+    dropped_samples_.fetch_add(1, std::memory_order_relaxed);
+    return nullptr;
+  }
+
+  HashtablezInfo* sample = PopDead();
+  if (sample == nullptr) {
+    // Resurrection failed.  Hire a new warlock.
+    sample = new HashtablezInfo();
+    PushNew(sample);
+  }
+
+  return sample;
+}
+
+void HashtablezSampler::Unregister(HashtablezInfo* sample) {
+  PushDead(sample);
+  size_estimate_.fetch_sub(1, std::memory_order_relaxed);
+}
+
+int64_t HashtablezSampler::Iterate(
+    const std::function<void(const HashtablezInfo& stack)>& f) {
+  HashtablezInfo* s = all_.load(std::memory_order_acquire);
+  while (s != nullptr) {
+    absl::MutexLock l(&s->init_mu);
+    if (s->dead == nullptr) {
+      f(*s);
+    }
+    s = s->next;
+  }
+
+  return dropped_samples_.load(std::memory_order_relaxed);
+}
+
+static bool ShouldForceSampling() {
+  enum ForceState {
+    kDontForce,
+    kForce,
+    kUninitialized
+  };
+  ABSL_CONST_INIT static std::atomic<ForceState> global_state{
+      kUninitialized};
+  ForceState state = global_state.load(std::memory_order_relaxed);
+  if (ABSL_PREDICT_TRUE(state == kDontForce)) return false;
+
+  if (state == kUninitialized) {
+    state = AbslContainerInternalSampleEverything() ? kForce : kDontForce;
+    global_state.store(state, std::memory_order_relaxed);
+  }
+  return state == kForce;
+}
+
+HashtablezInfo* SampleSlow(int64_t* next_sample) {
+  if (ABSL_PREDICT_FALSE(ShouldForceSampling())) {
+    *next_sample = 1;
+    return HashtablezSampler::Global().Register();
+  }
+
+#if !defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+  *next_sample = std::numeric_limits<int64_t>::max();
+  return nullptr;
+#else
+  bool first = *next_sample < 0;
+  *next_sample = g_exponential_biased_generator.GetStride(
+      g_hashtablez_sample_parameter.load(std::memory_order_relaxed));
+  // Small values of interval are equivalent to just sampling next time.
+  ABSL_ASSERT(*next_sample >= 1);
+
+  // g_hashtablez_enabled can be dynamically flipped, we need to set a threshold
+  // low enough that we will start sampling in a reasonable time, so we just use
+  // the default sampling rate.
+  if (!g_hashtablez_enabled.load(std::memory_order_relaxed)) return nullptr;
+
+  // We will only be negative on our first count, so we should just retry in
+  // that case.
+  if (first) {
+    if (ABSL_PREDICT_TRUE(--*next_sample > 0)) return nullptr;
+    return SampleSlow(next_sample);
+  }
+
+  return HashtablezSampler::Global().Register();
+#endif
+}
+
+void UnsampleSlow(HashtablezInfo* info) {
+  HashtablezSampler::Global().Unregister(info);
+}
+
+void RecordInsertSlow(HashtablezInfo* info, size_t hash,
+                      size_t distance_from_desired) {
+  // SwissTables probe in groups of 16, so scale this to count items probes and
+  // not offset from desired.
+  size_t probe_length = distance_from_desired;
+#if SWISSTABLE_HAVE_SSE2
+  probe_length /= 16;
+#else
+  probe_length /= 8;
+#endif
+
+  info->hashes_bitwise_and.fetch_and(hash, std::memory_order_relaxed);
+  info->hashes_bitwise_or.fetch_or(hash, std::memory_order_relaxed);
+  info->max_probe_length.store(
+      std::max(info->max_probe_length.load(std::memory_order_relaxed),
+               probe_length),
+      std::memory_order_relaxed);
+  info->total_probe_length.fetch_add(probe_length, std::memory_order_relaxed);
+  info->size.fetch_add(1, std::memory_order_relaxed);
+}
+
+void SetHashtablezEnabled(bool enabled) {
+  g_hashtablez_enabled.store(enabled, std::memory_order_release);
+}
+
+void SetHashtablezSampleParameter(int32_t rate) {
+  if (rate > 0) {
+    g_hashtablez_sample_parameter.store(rate, std::memory_order_release);
+  } else {
+    ABSL_RAW_LOG(ERROR, "Invalid hashtablez sample rate: %lld",
+                 static_cast<long long>(rate));  // NOLINT(runtime/int)
+  }
+}
+
+void SetHashtablezMaxSamples(int32_t max) {
+  if (max > 0) {
+    g_hashtablez_max_samples.store(max, std::memory_order_release);
+  } else {
+    ABSL_RAW_LOG(ERROR, "Invalid hashtablez max samples: %lld",
+                 static_cast<long long>(max));  // NOLINT(runtime/int)
+  }
+}
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.h b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.h
new file mode 100644
index 0000000..34d5e57
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler.h	
@@ -0,0 +1,297 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: hashtablez_sampler.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the API for a low level library to sample hashtables
+// and collect runtime statistics about them.
+//
+// `HashtablezSampler` controls the lifecycle of `HashtablezInfo` objects which
+// store information about a single sample.
+//
+// `Record*` methods store information into samples.
+// `Sample()` and `Unsample()` make use of a single global sampler with
+// properties controlled by the flags hashtablez_enabled,
+// hashtablez_sample_rate, and hashtablez_max_samples.
+//
+// WARNING
+//
+// Using this sampling API may cause sampled Swiss tables to use the global
+// allocator (operator `new`) in addition to any custom allocator.  If you
+// are using a table in an unusual circumstance where allocation or calling a
+// linux syscall is unacceptable, this could interfere.
+//
+// This utility is internal-only. Use at your own risk.
+
+#ifndef ABSL_CONTAINER_INTERNAL_HASHTABLEZ_SAMPLER_H_
+#define ABSL_CONTAINER_INTERNAL_HASHTABLEZ_SAMPLER_H_
+
+#include <atomic>
+#include <functional>
+#include <memory>
+#include <vector>
+
+#include "absl/base/internal/per_thread_tls.h"
+#include "absl/base/optimization.h"
+#include "absl/container/internal/have_sse.h"
+#include "absl/synchronization/mutex.h"
+#include "absl/utility/utility.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// Stores information about a sampled hashtable.  All mutations to this *must*
+// be made through `Record*` functions below.  All reads from this *must* only
+// occur in the callback to `HashtablezSampler::Iterate`.
+struct HashtablezInfo {
+  // Constructs the object but does not fill in any fields.
+  HashtablezInfo();
+  ~HashtablezInfo();
+  HashtablezInfo(const HashtablezInfo&) = delete;
+  HashtablezInfo& operator=(const HashtablezInfo&) = delete;
+
+  // Puts the object into a clean state, fills in the logically `const` members,
+  // blocking for any readers that are currently sampling the object.
+  void PrepareForSampling() ABSL_EXCLUSIVE_LOCKS_REQUIRED(init_mu);
+
+  // These fields are mutated by the various Record* APIs and need to be
+  // thread-safe.
+  std::atomic<size_t> capacity;
+  std::atomic<size_t> size;
+  std::atomic<size_t> num_erases;
+  std::atomic<size_t> max_probe_length;
+  std::atomic<size_t> total_probe_length;
+  std::atomic<size_t> hashes_bitwise_or;
+  std::atomic<size_t> hashes_bitwise_and;
+
+  // `HashtablezSampler` maintains intrusive linked lists for all samples.  See
+  // comments on `HashtablezSampler::all_` for details on these.  `init_mu`
+  // guards the ability to restore the sample to a pristine state.  This
+  // prevents races with sampling and resurrecting an object.
+  absl::Mutex init_mu;
+  HashtablezInfo* next;
+  HashtablezInfo* dead ABSL_GUARDED_BY(init_mu);
+
+  // All of the fields below are set by `PrepareForSampling`, they must not be
+  // mutated in `Record*` functions.  They are logically `const` in that sense.
+  // These are guarded by init_mu, but that is not externalized to clients, who
+  // can only read them during `HashtablezSampler::Iterate` which will hold the
+  // lock.
+  static constexpr int kMaxStackDepth = 64;
+  absl::Time create_time;
+  int32_t depth;
+  void* stack[kMaxStackDepth];
+};
+
+inline void RecordRehashSlow(HashtablezInfo* info, size_t total_probe_length) {
+#if SWISSTABLE_HAVE_SSE2
+  total_probe_length /= 16;
+#else
+  total_probe_length /= 8;
+#endif
+  info->total_probe_length.store(total_probe_length, std::memory_order_relaxed);
+  info->num_erases.store(0, std::memory_order_relaxed);
+}
+
+inline void RecordStorageChangedSlow(HashtablezInfo* info, size_t size,
+                                     size_t capacity) {
+  info->size.store(size, std::memory_order_relaxed);
+  info->capacity.store(capacity, std::memory_order_relaxed);
+  if (size == 0) {
+    // This is a clear, reset the total/num_erases too.
+    RecordRehashSlow(info, 0);
+  }
+}
+
+void RecordInsertSlow(HashtablezInfo* info, size_t hash,
+                      size_t distance_from_desired);
+
+inline void RecordEraseSlow(HashtablezInfo* info) {
+  info->size.fetch_sub(1, std::memory_order_relaxed);
+  info->num_erases.fetch_add(1, std::memory_order_relaxed);
+}
+
+HashtablezInfo* SampleSlow(int64_t* next_sample);
+void UnsampleSlow(HashtablezInfo* info);
+
+class HashtablezInfoHandle {
+ public:
+  explicit HashtablezInfoHandle() : info_(nullptr) {}
+  explicit HashtablezInfoHandle(HashtablezInfo* info) : info_(info) {}
+  ~HashtablezInfoHandle() {
+    if (ABSL_PREDICT_TRUE(info_ == nullptr)) return;
+    UnsampleSlow(info_);
+  }
+
+  HashtablezInfoHandle(const HashtablezInfoHandle&) = delete;
+  HashtablezInfoHandle& operator=(const HashtablezInfoHandle&) = delete;
+
+  HashtablezInfoHandle(HashtablezInfoHandle&& o) noexcept
+      : info_(absl::exchange(o.info_, nullptr)) {}
+  HashtablezInfoHandle& operator=(HashtablezInfoHandle&& o) noexcept {
+    if (ABSL_PREDICT_FALSE(info_ != nullptr)) {
+      UnsampleSlow(info_);
+    }
+    info_ = absl::exchange(o.info_, nullptr);
+    return *this;
+  }
+
+  inline void RecordStorageChanged(size_t size, size_t capacity) {
+    if (ABSL_PREDICT_TRUE(info_ == nullptr)) return;
+    RecordStorageChangedSlow(info_, size, capacity);
+  }
+
+  inline void RecordRehash(size_t total_probe_length) {
+    if (ABSL_PREDICT_TRUE(info_ == nullptr)) return;
+    RecordRehashSlow(info_, total_probe_length);
+  }
+
+  inline void RecordInsert(size_t hash, size_t distance_from_desired) {
+    if (ABSL_PREDICT_TRUE(info_ == nullptr)) return;
+    RecordInsertSlow(info_, hash, distance_from_desired);
+  }
+
+  inline void RecordErase() {
+    if (ABSL_PREDICT_TRUE(info_ == nullptr)) return;
+    RecordEraseSlow(info_);
+  }
+
+  friend inline void swap(HashtablezInfoHandle& lhs,
+                          HashtablezInfoHandle& rhs) {
+    std::swap(lhs.info_, rhs.info_);
+  }
+
+ private:
+  friend class HashtablezInfoHandlePeer;
+  HashtablezInfo* info_;
+};
+
+#if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+#error ABSL_INTERNAL_HASHTABLEZ_SAMPLE cannot be directly set
+#endif  // defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+
+#if (ABSL_PER_THREAD_TLS == 1) && !defined(ABSL_BUILD_DLL) && \
+    !defined(ABSL_CONSUME_DLL)
+#define ABSL_INTERNAL_HASHTABLEZ_SAMPLE
+#endif
+
+#if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+extern ABSL_PER_THREAD_TLS_KEYWORD int64_t global_next_sample;
+#endif  // ABSL_PER_THREAD_TLS
+
+// Returns an RAII sampling handle that manages registration and unregistation
+// with the global sampler.
+inline HashtablezInfoHandle Sample() {
+#if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
+  if (ABSL_PREDICT_TRUE(--global_next_sample > 0)) {
+    return HashtablezInfoHandle(nullptr);
+  }
+  return HashtablezInfoHandle(SampleSlow(&global_next_sample));
+#else
+  return HashtablezInfoHandle(nullptr);
+#endif  // !ABSL_PER_THREAD_TLS
+}
+
+// Holds samples and their associated stack traces with a soft limit of
+// `SetHashtablezMaxSamples()`.
+//
+// Thread safe.
+class HashtablezSampler {
+ public:
+  // Returns a global Sampler.
+  static HashtablezSampler& Global();
+
+  HashtablezSampler();
+  ~HashtablezSampler();
+
+  // Registers for sampling.  Returns an opaque registration info.
+  HashtablezInfo* Register();
+
+  // Unregisters the sample.
+  void Unregister(HashtablezInfo* sample);
+
+  // The dispose callback will be called on all samples the moment they are
+  // being unregistered. Only affects samples that are unregistered after the
+  // callback has been set.
+  // Returns the previous callback.
+  using DisposeCallback = void (*)(const HashtablezInfo&);
+  DisposeCallback SetDisposeCallback(DisposeCallback f);
+
+  // Iterates over all the registered `StackInfo`s.  Returning the number of
+  // samples that have been dropped.
+  int64_t Iterate(const std::function<void(const HashtablezInfo& stack)>& f);
+
+ private:
+  void PushNew(HashtablezInfo* sample);
+  void PushDead(HashtablezInfo* sample);
+  HashtablezInfo* PopDead();
+
+  std::atomic<size_t> dropped_samples_;
+  std::atomic<size_t> size_estimate_;
+
+  // Intrusive lock free linked lists for tracking samples.
+  //
+  // `all_` records all samples (they are never removed from this list) and is
+  // terminated with a `nullptr`.
+  //
+  // `graveyard_.dead` is a circular linked list.  When it is empty,
+  // `graveyard_.dead == &graveyard`.  The list is circular so that
+  // every item on it (even the last) has a non-null dead pointer.  This allows
+  // `Iterate` to determine if a given sample is live or dead using only
+  // information on the sample itself.
+  //
+  // For example, nodes [A, B, C, D, E] with [A, C, E] alive and [B, D] dead
+  // looks like this (G is the Graveyard):
+  //
+  //           +---+    +---+    +---+    +---+    +---+
+  //    all -->| A |--->| B |--->| C |--->| D |--->| E |
+  //           |   |    |   |    |   |    |   |    |   |
+  //   +---+   |   | +->|   |-+  |   | +->|   |-+  |   |
+  //   | G |   +---+ |  +---+ |  +---+ |  +---+ |  +---+
+  //   |   |         |        |        |        |
+  //   |   | --------+        +--------+        |
+  //   +---+                                    |
+  //     ^                                      |
+  //     +--------------------------------------+
+  //
+  std::atomic<HashtablezInfo*> all_;
+  HashtablezInfo graveyard_;
+
+  std::atomic<DisposeCallback> dispose_;
+};
+
+// Enables or disables sampling for Swiss tables.
+void SetHashtablezEnabled(bool enabled);
+
+// Sets the rate at which Swiss tables will be sampled.
+void SetHashtablezSampleParameter(int32_t rate);
+
+// Sets a soft max for the number of samples that will be kept.
+void SetHashtablezMaxSamples(int32_t max);
+
+// Configuration override.
+// This allows process-wide sampling without depending on order of
+// initialization of static storage duration objects.
+// The definition of this constant is weak, which allows us to inject a
+// different value for it at link time.
+extern "C" bool AbslContainerInternalSampleEverything();
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_HASHTABLEZ_SAMPLER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler_force_weak_definition.cc b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler_force_weak_definition.cc
new file mode 100644
index 0000000..78b9d36
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/hashtablez_sampler_force_weak_definition.cc	
@@ -0,0 +1,30 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/container/internal/hashtablez_sampler.h"
+
+#include "absl/base/attributes.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// See hashtablez_sampler.h for details.
+extern "C" ABSL_ATTRIBUTE_WEAK bool AbslContainerInternalSampleEverything() {
+  return false;
+}
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/have_sse.h b/ChattingApp 000/Pods/abseil/absl/container/internal/have_sse.h
new file mode 100644
index 0000000..4341441
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/have_sse.h	
@@ -0,0 +1,49 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Shared config probing for SSE instructions used in Swiss tables.
+#ifndef ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
+#define ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
+
+#ifndef SWISSTABLE_HAVE_SSE2
+#if defined(__SSE2__) ||  \
+    (defined(_MSC_VER) && \
+     (defined(_M_X64) || (defined(_M_IX86) && _M_IX86_FP >= 2)))
+#define SWISSTABLE_HAVE_SSE2 1
+#else
+#define SWISSTABLE_HAVE_SSE2 0
+#endif
+#endif
+
+#ifndef SWISSTABLE_HAVE_SSSE3
+#ifdef __SSSE3__
+#define SWISSTABLE_HAVE_SSSE3 1
+#else
+#define SWISSTABLE_HAVE_SSSE3 0
+#endif
+#endif
+
+#if SWISSTABLE_HAVE_SSSE3 && !SWISSTABLE_HAVE_SSE2
+#error "Bad configuration!"
+#endif
+
+#if SWISSTABLE_HAVE_SSE2
+#include <emmintrin.h>
+#endif
+
+#if SWISSTABLE_HAVE_SSSE3
+#include <tmmintrin.h>
+#endif
+
+#endif  // ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/inlined_vector.h b/ChattingApp 000/Pods/abseil/absl/container/internal/inlined_vector.h
new file mode 100644
index 0000000..4d80b72
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/inlined_vector.h	
@@ -0,0 +1,892 @@
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_CONTAINER_INTERNAL_INLINED_VECTOR_INTERNAL_H_
+#define ABSL_CONTAINER_INTERNAL_INLINED_VECTOR_INTERNAL_H_
+
+#include <algorithm>
+#include <cstddef>
+#include <cstring>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/container/internal/compressed_tuple.h"
+#include "absl/memory/memory.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/span.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace inlined_vector_internal {
+
+template <typename Iterator>
+using IsAtLeastForwardIterator = std::is_convertible<
+    typename std::iterator_traits<Iterator>::iterator_category,
+    std::forward_iterator_tag>;
+
+template <typename AllocatorType,
+          typename ValueType =
+              typename absl::allocator_traits<AllocatorType>::value_type>
+using IsMemcpyOk =
+    absl::conjunction<std::is_same<AllocatorType, std::allocator<ValueType>>,
+                      absl::is_trivially_copy_constructible<ValueType>,
+                      absl::is_trivially_copy_assignable<ValueType>,
+                      absl::is_trivially_destructible<ValueType>>;
+
+template <typename AllocatorType, typename Pointer, typename SizeType>
+void DestroyElements(AllocatorType* alloc_ptr, Pointer destroy_first,
+                     SizeType destroy_size) {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+
+  if (destroy_first != nullptr) {
+    for (auto i = destroy_size; i != 0;) {
+      --i;
+      AllocatorTraits::destroy(*alloc_ptr, destroy_first + i);
+    }
+
+#if !defined(NDEBUG)
+    {
+      using ValueType = typename AllocatorTraits::value_type;
+
+      // Overwrite unused memory with `0xab` so we can catch uninitialized
+      // usage.
+      //
+      // Cast to `void*` to tell the compiler that we don't care that we might
+      // be scribbling on a vtable pointer.
+      void* memory_ptr = destroy_first;
+      auto memory_size = destroy_size * sizeof(ValueType);
+      std::memset(memory_ptr, 0xab, memory_size);
+    }
+#endif  // !defined(NDEBUG)
+  }
+}
+
+template <typename AllocatorType, typename Pointer, typename ValueAdapter,
+          typename SizeType>
+void ConstructElements(AllocatorType* alloc_ptr, Pointer construct_first,
+                       ValueAdapter* values_ptr, SizeType construct_size) {
+  for (SizeType i = 0; i < construct_size; ++i) {
+    ABSL_INTERNAL_TRY {
+      values_ptr->ConstructNext(alloc_ptr, construct_first + i);
+    }
+    ABSL_INTERNAL_CATCH_ANY {
+      inlined_vector_internal::DestroyElements(alloc_ptr, construct_first, i);
+      ABSL_INTERNAL_RETHROW;
+    }
+  }
+}
+
+template <typename Pointer, typename ValueAdapter, typename SizeType>
+void AssignElements(Pointer assign_first, ValueAdapter* values_ptr,
+                    SizeType assign_size) {
+  for (SizeType i = 0; i < assign_size; ++i) {
+    values_ptr->AssignNext(assign_first + i);
+  }
+}
+
+template <typename AllocatorType>
+struct StorageView {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using Pointer = typename AllocatorTraits::pointer;
+  using SizeType = typename AllocatorTraits::size_type;
+
+  Pointer data;
+  SizeType size;
+  SizeType capacity;
+};
+
+template <typename AllocatorType, typename Iterator>
+class IteratorValueAdapter {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using Pointer = typename AllocatorTraits::pointer;
+
+ public:
+  explicit IteratorValueAdapter(const Iterator& it) : it_(it) {}
+
+  void ConstructNext(AllocatorType* alloc_ptr, Pointer construct_at) {
+    AllocatorTraits::construct(*alloc_ptr, construct_at, *it_);
+    ++it_;
+  }
+
+  void AssignNext(Pointer assign_at) {
+    *assign_at = *it_;
+    ++it_;
+  }
+
+ private:
+  Iterator it_;
+};
+
+template <typename AllocatorType>
+class CopyValueAdapter {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using ValueType = typename AllocatorTraits::value_type;
+  using Pointer = typename AllocatorTraits::pointer;
+  using ConstPointer = typename AllocatorTraits::const_pointer;
+
+ public:
+  explicit CopyValueAdapter(const ValueType& v) : ptr_(std::addressof(v)) {}
+
+  void ConstructNext(AllocatorType* alloc_ptr, Pointer construct_at) {
+    AllocatorTraits::construct(*alloc_ptr, construct_at, *ptr_);
+  }
+
+  void AssignNext(Pointer assign_at) { *assign_at = *ptr_; }
+
+ private:
+  ConstPointer ptr_;
+};
+
+template <typename AllocatorType>
+class DefaultValueAdapter {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using ValueType = typename AllocatorTraits::value_type;
+  using Pointer = typename AllocatorTraits::pointer;
+
+ public:
+  explicit DefaultValueAdapter() {}
+
+  void ConstructNext(AllocatorType* alloc_ptr, Pointer construct_at) {
+    AllocatorTraits::construct(*alloc_ptr, construct_at);
+  }
+
+  void AssignNext(Pointer assign_at) { *assign_at = ValueType(); }
+};
+
+template <typename AllocatorType>
+class AllocationTransaction {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using Pointer = typename AllocatorTraits::pointer;
+  using SizeType = typename AllocatorTraits::size_type;
+
+ public:
+  explicit AllocationTransaction(AllocatorType* alloc_ptr)
+      : alloc_data_(*alloc_ptr, nullptr) {}
+
+  ~AllocationTransaction() {
+    if (DidAllocate()) {
+      AllocatorTraits::deallocate(GetAllocator(), GetData(), GetCapacity());
+    }
+  }
+
+  AllocationTransaction(const AllocationTransaction&) = delete;
+  void operator=(const AllocationTransaction&) = delete;
+
+  AllocatorType& GetAllocator() { return alloc_data_.template get<0>(); }
+  Pointer& GetData() { return alloc_data_.template get<1>(); }
+  SizeType& GetCapacity() { return capacity_; }
+
+  bool DidAllocate() { return GetData() != nullptr; }
+  Pointer Allocate(SizeType capacity) {
+    GetData() = AllocatorTraits::allocate(GetAllocator(), capacity);
+    GetCapacity() = capacity;
+    return GetData();
+  }
+
+  void Reset() {
+    GetData() = nullptr;
+    GetCapacity() = 0;
+  }
+
+ private:
+  container_internal::CompressedTuple<AllocatorType, Pointer> alloc_data_;
+  SizeType capacity_ = 0;
+};
+
+template <typename AllocatorType>
+class ConstructionTransaction {
+  using AllocatorTraits = absl::allocator_traits<AllocatorType>;
+  using Pointer = typename AllocatorTraits::pointer;
+  using SizeType = typename AllocatorTraits::size_type;
+
+ public:
+  explicit ConstructionTransaction(AllocatorType* alloc_ptr)
+      : alloc_data_(*alloc_ptr, nullptr) {}
+
+  ~ConstructionTransaction() {
+    if (DidConstruct()) {
+      inlined_vector_internal::DestroyElements(std::addressof(GetAllocator()),
+                                               GetData(), GetSize());
+    }
+  }
+
+  ConstructionTransaction(const ConstructionTransaction&) = delete;
+  void operator=(const ConstructionTransaction&) = delete;
+
+  AllocatorType& GetAllocator() { return alloc_data_.template get<0>(); }
+  Pointer& GetData() { return alloc_data_.template get<1>(); }
+  SizeType& GetSize() { return size_; }
+
+  bool DidConstruct() { return GetData() != nullptr; }
+  template <typename ValueAdapter>
+  void Construct(Pointer data, ValueAdapter* values_ptr, SizeType size) {
+    inlined_vector_internal::ConstructElements(std::addressof(GetAllocator()),
+                                               data, values_ptr, size);
+    GetData() = data;
+    GetSize() = size;
+  }
+  void Commit() {
+    GetData() = nullptr;
+    GetSize() = 0;
+  }
+
+ private:
+  container_internal::CompressedTuple<AllocatorType, Pointer> alloc_data_;
+  SizeType size_ = 0;
+};
+
+template <typename T, size_t N, typename A>
+class Storage {
+ public:
+  using AllocatorTraits = absl::allocator_traits<A>;
+  using allocator_type = typename AllocatorTraits::allocator_type;
+  using value_type = typename AllocatorTraits::value_type;
+  using pointer = typename AllocatorTraits::pointer;
+  using const_pointer = typename AllocatorTraits::const_pointer;
+  using size_type = typename AllocatorTraits::size_type;
+  using difference_type = typename AllocatorTraits::difference_type;
+
+  using reference = value_type&;
+  using const_reference = const value_type&;
+  using RValueReference = value_type&&;
+  using iterator = pointer;
+  using const_iterator = const_pointer;
+  using reverse_iterator = std::reverse_iterator<iterator>;
+  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+  using MoveIterator = std::move_iterator<iterator>;
+  using IsMemcpyOk = inlined_vector_internal::IsMemcpyOk<allocator_type>;
+
+  using StorageView = inlined_vector_internal::StorageView<allocator_type>;
+
+  template <typename Iterator>
+  using IteratorValueAdapter =
+      inlined_vector_internal::IteratorValueAdapter<allocator_type, Iterator>;
+  using CopyValueAdapter =
+      inlined_vector_internal::CopyValueAdapter<allocator_type>;
+  using DefaultValueAdapter =
+      inlined_vector_internal::DefaultValueAdapter<allocator_type>;
+
+  using AllocationTransaction =
+      inlined_vector_internal::AllocationTransaction<allocator_type>;
+  using ConstructionTransaction =
+      inlined_vector_internal::ConstructionTransaction<allocator_type>;
+
+  static size_type NextCapacity(size_type current_capacity) {
+    return current_capacity * 2;
+  }
+
+  static size_type ComputeCapacity(size_type current_capacity,
+                                   size_type requested_capacity) {
+    return (std::max)(NextCapacity(current_capacity), requested_capacity);
+  }
+
+  // ---------------------------------------------------------------------------
+  // Storage Constructors and Destructor
+  // ---------------------------------------------------------------------------
+
+  Storage() : metadata_() {}
+
+  explicit Storage(const allocator_type& alloc) : metadata_(alloc, {}) {}
+
+  ~Storage() {
+    pointer data = GetIsAllocated() ? GetAllocatedData() : GetInlinedData();
+    inlined_vector_internal::DestroyElements(GetAllocPtr(), data, GetSize());
+    DeallocateIfAllocated();
+  }
+
+  // ---------------------------------------------------------------------------
+  // Storage Member Accessors
+  // ---------------------------------------------------------------------------
+
+  size_type& GetSizeAndIsAllocated() { return metadata_.template get<1>(); }
+
+  const size_type& GetSizeAndIsAllocated() const {
+    return metadata_.template get<1>();
+  }
+
+  size_type GetSize() const { return GetSizeAndIsAllocated() >> 1; }
+
+  bool GetIsAllocated() const { return GetSizeAndIsAllocated() & 1; }
+
+  pointer GetAllocatedData() { return data_.allocated.allocated_data; }
+
+  const_pointer GetAllocatedData() const {
+    return data_.allocated.allocated_data;
+  }
+
+  pointer GetInlinedData() {
+    return reinterpret_cast<pointer>(
+        std::addressof(data_.inlined.inlined_data[0]));
+  }
+
+  const_pointer GetInlinedData() const {
+    return reinterpret_cast<const_pointer>(
+        std::addressof(data_.inlined.inlined_data[0]));
+  }
+
+  size_type GetAllocatedCapacity() const {
+    return data_.allocated.allocated_capacity;
+  }
+
+  size_type GetInlinedCapacity() const { return static_cast<size_type>(N); }
+
+  StorageView MakeStorageView() {
+    return GetIsAllocated()
+               ? StorageView{GetAllocatedData(), GetSize(),
+                             GetAllocatedCapacity()}
+               : StorageView{GetInlinedData(), GetSize(), GetInlinedCapacity()};
+  }
+
+  allocator_type* GetAllocPtr() {
+    return std::addressof(metadata_.template get<0>());
+  }
+
+  const allocator_type* GetAllocPtr() const {
+    return std::addressof(metadata_.template get<0>());
+  }
+
+  // ---------------------------------------------------------------------------
+  // Storage Member Mutators
+  // ---------------------------------------------------------------------------
+
+  template <typename ValueAdapter>
+  void Initialize(ValueAdapter values, size_type new_size);
+
+  template <typename ValueAdapter>
+  void Assign(ValueAdapter values, size_type new_size);
+
+  template <typename ValueAdapter>
+  void Resize(ValueAdapter values, size_type new_size);
+
+  template <typename ValueAdapter>
+  iterator Insert(const_iterator pos, ValueAdapter values,
+                  size_type insert_count);
+
+  template <typename... Args>
+  reference EmplaceBack(Args&&... args);
+
+  iterator Erase(const_iterator from, const_iterator to);
+
+  void Reserve(size_type requested_capacity);
+
+  void ShrinkToFit();
+
+  void Swap(Storage* other_storage_ptr);
+
+  void SetIsAllocated() {
+    GetSizeAndIsAllocated() |= static_cast<size_type>(1);
+  }
+
+  void UnsetIsAllocated() {
+    GetSizeAndIsAllocated() &= ((std::numeric_limits<size_type>::max)() - 1);
+  }
+
+  void SetSize(size_type size) {
+    GetSizeAndIsAllocated() =
+        (size << 1) | static_cast<size_type>(GetIsAllocated());
+  }
+
+  void SetAllocatedSize(size_type size) {
+    GetSizeAndIsAllocated() = (size << 1) | static_cast<size_type>(1);
+  }
+
+  void SetInlinedSize(size_type size) {
+    GetSizeAndIsAllocated() = size << static_cast<size_type>(1);
+  }
+
+  void AddSize(size_type count) {
+    GetSizeAndIsAllocated() += count << static_cast<size_type>(1);
+  }
+
+  void SubtractSize(size_type count) {
+    assert(count <= GetSize());
+
+    GetSizeAndIsAllocated() -= count << static_cast<size_type>(1);
+  }
+
+  void SetAllocatedData(pointer data, size_type capacity) {
+    data_.allocated.allocated_data = data;
+    data_.allocated.allocated_capacity = capacity;
+  }
+
+  void AcquireAllocatedData(AllocationTransaction* allocation_tx_ptr) {
+    SetAllocatedData(allocation_tx_ptr->GetData(),
+                     allocation_tx_ptr->GetCapacity());
+
+    allocation_tx_ptr->Reset();
+  }
+
+  void MemcpyFrom(const Storage& other_storage) {
+    assert(IsMemcpyOk::value || other_storage.GetIsAllocated());
+
+    GetSizeAndIsAllocated() = other_storage.GetSizeAndIsAllocated();
+    data_ = other_storage.data_;
+  }
+
+  void DeallocateIfAllocated() {
+    if (GetIsAllocated()) {
+      AllocatorTraits::deallocate(*GetAllocPtr(), GetAllocatedData(),
+                                  GetAllocatedCapacity());
+    }
+  }
+
+ private:
+  using Metadata =
+      container_internal::CompressedTuple<allocator_type, size_type>;
+
+  struct Allocated {
+    pointer allocated_data;
+    size_type allocated_capacity;
+  };
+
+  struct Inlined {
+    alignas(value_type) char inlined_data[sizeof(value_type[N])];
+  };
+
+  union Data {
+    Allocated allocated;
+    Inlined inlined;
+  };
+
+  Metadata metadata_;
+  Data data_;
+};
+
+template <typename T, size_t N, typename A>
+template <typename ValueAdapter>
+auto Storage<T, N, A>::Initialize(ValueAdapter values, size_type new_size)
+    -> void {
+  // Only callable from constructors!
+  assert(!GetIsAllocated());
+  assert(GetSize() == 0);
+
+  pointer construct_data;
+  if (new_size > GetInlinedCapacity()) {
+    // Because this is only called from the `InlinedVector` constructors, it's
+    // safe to take on the allocation with size `0`. If `ConstructElements(...)`
+    // throws, deallocation will be automatically handled by `~Storage()`.
+    size_type new_capacity = ComputeCapacity(GetInlinedCapacity(), new_size);
+    construct_data = AllocatorTraits::allocate(*GetAllocPtr(), new_capacity);
+    SetAllocatedData(construct_data, new_capacity);
+    SetIsAllocated();
+  } else {
+    construct_data = GetInlinedData();
+  }
+
+  inlined_vector_internal::ConstructElements(GetAllocPtr(), construct_data,
+                                             &values, new_size);
+
+  // Since the initial size was guaranteed to be `0` and the allocated bit is
+  // already correct for either case, *adding* `new_size` gives us the correct
+  // result faster than setting it directly.
+  AddSize(new_size);
+}
+
+template <typename T, size_t N, typename A>
+template <typename ValueAdapter>
+auto Storage<T, N, A>::Assign(ValueAdapter values, size_type new_size) -> void {
+  StorageView storage_view = MakeStorageView();
+
+  AllocationTransaction allocation_tx(GetAllocPtr());
+
+  absl::Span<value_type> assign_loop;
+  absl::Span<value_type> construct_loop;
+  absl::Span<value_type> destroy_loop;
+
+  if (new_size > storage_view.capacity) {
+    size_type new_capacity = ComputeCapacity(storage_view.capacity, new_size);
+    construct_loop = {allocation_tx.Allocate(new_capacity), new_size};
+    destroy_loop = {storage_view.data, storage_view.size};
+  } else if (new_size > storage_view.size) {
+    assign_loop = {storage_view.data, storage_view.size};
+    construct_loop = {storage_view.data + storage_view.size,
+                      new_size - storage_view.size};
+  } else {
+    assign_loop = {storage_view.data, new_size};
+    destroy_loop = {storage_view.data + new_size, storage_view.size - new_size};
+  }
+
+  inlined_vector_internal::AssignElements(assign_loop.data(), &values,
+                                          assign_loop.size());
+
+  inlined_vector_internal::ConstructElements(
+      GetAllocPtr(), construct_loop.data(), &values, construct_loop.size());
+
+  inlined_vector_internal::DestroyElements(GetAllocPtr(), destroy_loop.data(),
+                                           destroy_loop.size());
+
+  if (allocation_tx.DidAllocate()) {
+    DeallocateIfAllocated();
+    AcquireAllocatedData(&allocation_tx);
+    SetIsAllocated();
+  }
+
+  SetSize(new_size);
+}
+
+template <typename T, size_t N, typename A>
+template <typename ValueAdapter>
+auto Storage<T, N, A>::Resize(ValueAdapter values, size_type new_size) -> void {
+  StorageView storage_view = MakeStorageView();
+
+  IteratorValueAdapter<MoveIterator> move_values(
+      MoveIterator(storage_view.data));
+
+  AllocationTransaction allocation_tx(GetAllocPtr());
+  ConstructionTransaction construction_tx(GetAllocPtr());
+
+  absl::Span<value_type> construct_loop;
+  absl::Span<value_type> move_construct_loop;
+  absl::Span<value_type> destroy_loop;
+
+  if (new_size > storage_view.capacity) {
+    size_type new_capacity = ComputeCapacity(storage_view.capacity, new_size);
+    pointer new_data = allocation_tx.Allocate(new_capacity);
+    construct_loop = {new_data + storage_view.size,
+                      new_size - storage_view.size};
+    move_construct_loop = {new_data, storage_view.size};
+    destroy_loop = {storage_view.data, storage_view.size};
+  } else if (new_size > storage_view.size) {
+    construct_loop = {storage_view.data + storage_view.size,
+                      new_size - storage_view.size};
+  } else {
+    destroy_loop = {storage_view.data + new_size, storage_view.size - new_size};
+  }
+
+  construction_tx.Construct(construct_loop.data(), &values,
+                            construct_loop.size());
+
+  inlined_vector_internal::ConstructElements(
+      GetAllocPtr(), move_construct_loop.data(), &move_values,
+      move_construct_loop.size());
+
+  inlined_vector_internal::DestroyElements(GetAllocPtr(), destroy_loop.data(),
+                                           destroy_loop.size());
+
+  construction_tx.Commit();
+  if (allocation_tx.DidAllocate()) {
+    DeallocateIfAllocated();
+    AcquireAllocatedData(&allocation_tx);
+    SetIsAllocated();
+  }
+
+  SetSize(new_size);
+}
+
+template <typename T, size_t N, typename A>
+template <typename ValueAdapter>
+auto Storage<T, N, A>::Insert(const_iterator pos, ValueAdapter values,
+                              size_type insert_count) -> iterator {
+  StorageView storage_view = MakeStorageView();
+
+  size_type insert_index =
+      std::distance(const_iterator(storage_view.data), pos);
+  size_type insert_end_index = insert_index + insert_count;
+  size_type new_size = storage_view.size + insert_count;
+
+  if (new_size > storage_view.capacity) {
+    AllocationTransaction allocation_tx(GetAllocPtr());
+    ConstructionTransaction construction_tx(GetAllocPtr());
+    ConstructionTransaction move_construciton_tx(GetAllocPtr());
+
+    IteratorValueAdapter<MoveIterator> move_values(
+        MoveIterator(storage_view.data));
+
+    size_type new_capacity = ComputeCapacity(storage_view.capacity, new_size);
+    pointer new_data = allocation_tx.Allocate(new_capacity);
+
+    construction_tx.Construct(new_data + insert_index, &values, insert_count);
+
+    move_construciton_tx.Construct(new_data, &move_values, insert_index);
+
+    inlined_vector_internal::ConstructElements(
+        GetAllocPtr(), new_data + insert_end_index, &move_values,
+        storage_view.size - insert_index);
+
+    inlined_vector_internal::DestroyElements(GetAllocPtr(), storage_view.data,
+                                             storage_view.size);
+
+    construction_tx.Commit();
+    move_construciton_tx.Commit();
+    DeallocateIfAllocated();
+    AcquireAllocatedData(&allocation_tx);
+
+    SetAllocatedSize(new_size);
+    return iterator(new_data + insert_index);
+  } else {
+    size_type move_construction_destination_index =
+        (std::max)(insert_end_index, storage_view.size);
+
+    ConstructionTransaction move_construction_tx(GetAllocPtr());
+
+    IteratorValueAdapter<MoveIterator> move_construction_values(
+        MoveIterator(storage_view.data +
+                     (move_construction_destination_index - insert_count)));
+    absl::Span<value_type> move_construction = {
+        storage_view.data + move_construction_destination_index,
+        new_size - move_construction_destination_index};
+
+    pointer move_assignment_values = storage_view.data + insert_index;
+    absl::Span<value_type> move_assignment = {
+        storage_view.data + insert_end_index,
+        move_construction_destination_index - insert_end_index};
+
+    absl::Span<value_type> insert_assignment = {move_assignment_values,
+                                                move_construction.size()};
+
+    absl::Span<value_type> insert_construction = {
+        insert_assignment.data() + insert_assignment.size(),
+        insert_count - insert_assignment.size()};
+
+    move_construction_tx.Construct(move_construction.data(),
+                                   &move_construction_values,
+                                   move_construction.size());
+
+    for (pointer destination = move_assignment.data() + move_assignment.size(),
+                 last_destination = move_assignment.data(),
+                 source = move_assignment_values + move_assignment.size();
+         ;) {
+      --destination;
+      --source;
+      if (destination < last_destination) break;
+      *destination = std::move(*source);
+    }
+
+    inlined_vector_internal::AssignElements(insert_assignment.data(), &values,
+                                            insert_assignment.size());
+
+    inlined_vector_internal::ConstructElements(
+        GetAllocPtr(), insert_construction.data(), &values,
+        insert_construction.size());
+
+    move_construction_tx.Commit();
+
+    AddSize(insert_count);
+    return iterator(storage_view.data + insert_index);
+  }
+}
+
+template <typename T, size_t N, typename A>
+template <typename... Args>
+auto Storage<T, N, A>::EmplaceBack(Args&&... args) -> reference {
+  StorageView storage_view = MakeStorageView();
+
+  AllocationTransaction allocation_tx(GetAllocPtr());
+
+  IteratorValueAdapter<MoveIterator> move_values(
+      MoveIterator(storage_view.data));
+
+  pointer construct_data;
+  if (storage_view.size == storage_view.capacity) {
+    size_type new_capacity = NextCapacity(storage_view.capacity);
+    construct_data = allocation_tx.Allocate(new_capacity);
+  } else {
+    construct_data = storage_view.data;
+  }
+
+  pointer last_ptr = construct_data + storage_view.size;
+
+  AllocatorTraits::construct(*GetAllocPtr(), last_ptr,
+                             std::forward<Args>(args)...);
+
+  if (allocation_tx.DidAllocate()) {
+    ABSL_INTERNAL_TRY {
+      inlined_vector_internal::ConstructElements(
+          GetAllocPtr(), allocation_tx.GetData(), &move_values,
+          storage_view.size);
+    }
+    ABSL_INTERNAL_CATCH_ANY {
+      AllocatorTraits::destroy(*GetAllocPtr(), last_ptr);
+      ABSL_INTERNAL_RETHROW;
+    }
+
+    inlined_vector_internal::DestroyElements(GetAllocPtr(), storage_view.data,
+                                             storage_view.size);
+
+    DeallocateIfAllocated();
+    AcquireAllocatedData(&allocation_tx);
+    SetIsAllocated();
+  }
+
+  AddSize(1);
+  return *last_ptr;
+}
+
+template <typename T, size_t N, typename A>
+auto Storage<T, N, A>::Erase(const_iterator from, const_iterator to)
+    -> iterator {
+  StorageView storage_view = MakeStorageView();
+
+  size_type erase_size = std::distance(from, to);
+  size_type erase_index =
+      std::distance(const_iterator(storage_view.data), from);
+  size_type erase_end_index = erase_index + erase_size;
+
+  IteratorValueAdapter<MoveIterator> move_values(
+      MoveIterator(storage_view.data + erase_end_index));
+
+  inlined_vector_internal::AssignElements(storage_view.data + erase_index,
+                                          &move_values,
+                                          storage_view.size - erase_end_index);
+
+  inlined_vector_internal::DestroyElements(
+      GetAllocPtr(), storage_view.data + (storage_view.size - erase_size),
+      erase_size);
+
+  SubtractSize(erase_size);
+  return iterator(storage_view.data + erase_index);
+}
+
+template <typename T, size_t N, typename A>
+auto Storage<T, N, A>::Reserve(size_type requested_capacity) -> void {
+  StorageView storage_view = MakeStorageView();
+
+  if (ABSL_PREDICT_FALSE(requested_capacity <= storage_view.capacity)) return;
+
+  AllocationTransaction allocation_tx(GetAllocPtr());
+
+  IteratorValueAdapter<MoveIterator> move_values(
+      MoveIterator(storage_view.data));
+
+  size_type new_capacity =
+      ComputeCapacity(storage_view.capacity, requested_capacity);
+  pointer new_data = allocation_tx.Allocate(new_capacity);
+
+  inlined_vector_internal::ConstructElements(GetAllocPtr(), new_data,
+                                             &move_values, storage_view.size);
+
+  inlined_vector_internal::DestroyElements(GetAllocPtr(), storage_view.data,
+                                           storage_view.size);
+
+  DeallocateIfAllocated();
+  AcquireAllocatedData(&allocation_tx);
+  SetIsAllocated();
+}
+
+template <typename T, size_t N, typename A>
+auto Storage<T, N, A>::ShrinkToFit() -> void {
+  // May only be called on allocated instances!
+  assert(GetIsAllocated());
+
+  StorageView storage_view{GetAllocatedData(), GetSize(),
+                           GetAllocatedCapacity()};
+
+  if (ABSL_PREDICT_FALSE(storage_view.size == storage_view.capacity)) return;
+
+  AllocationTransaction allocation_tx(GetAllocPtr());
+
+  IteratorValueAdapter<MoveIterator> move_values(
+      MoveIterator(storage_view.data));
+
+  pointer construct_data;
+  if (storage_view.size > GetInlinedCapacity()) {
+    size_type new_capacity = storage_view.size;
+    construct_data = allocation_tx.Allocate(new_capacity);
+  } else {
+    construct_data = GetInlinedData();
+  }
+
+  ABSL_INTERNAL_TRY {
+    inlined_vector_internal::ConstructElements(GetAllocPtr(), construct_data,
+                                               &move_values, storage_view.size);
+  }
+  ABSL_INTERNAL_CATCH_ANY {
+    SetAllocatedData(storage_view.data, storage_view.capacity);
+    ABSL_INTERNAL_RETHROW;
+  }
+
+  inlined_vector_internal::DestroyElements(GetAllocPtr(), storage_view.data,
+                                           storage_view.size);
+
+  AllocatorTraits::deallocate(*GetAllocPtr(), storage_view.data,
+                              storage_view.capacity);
+
+  if (allocation_tx.DidAllocate()) {
+    AcquireAllocatedData(&allocation_tx);
+  } else {
+    UnsetIsAllocated();
+  }
+}
+
+template <typename T, size_t N, typename A>
+auto Storage<T, N, A>::Swap(Storage* other_storage_ptr) -> void {
+  using std::swap;
+  assert(this != other_storage_ptr);
+
+  if (GetIsAllocated() && other_storage_ptr->GetIsAllocated()) {
+    swap(data_.allocated, other_storage_ptr->data_.allocated);
+  } else if (!GetIsAllocated() && !other_storage_ptr->GetIsAllocated()) {
+    Storage* small_ptr = this;
+    Storage* large_ptr = other_storage_ptr;
+    if (small_ptr->GetSize() > large_ptr->GetSize()) swap(small_ptr, large_ptr);
+
+    for (size_type i = 0; i < small_ptr->GetSize(); ++i) {
+      swap(small_ptr->GetInlinedData()[i], large_ptr->GetInlinedData()[i]);
+    }
+
+    IteratorValueAdapter<MoveIterator> move_values(
+        MoveIterator(large_ptr->GetInlinedData() + small_ptr->GetSize()));
+
+    inlined_vector_internal::ConstructElements(
+        large_ptr->GetAllocPtr(),
+        small_ptr->GetInlinedData() + small_ptr->GetSize(), &move_values,
+        large_ptr->GetSize() - small_ptr->GetSize());
+
+    inlined_vector_internal::DestroyElements(
+        large_ptr->GetAllocPtr(),
+        large_ptr->GetInlinedData() + small_ptr->GetSize(),
+        large_ptr->GetSize() - small_ptr->GetSize());
+  } else {
+    Storage* allocated_ptr = this;
+    Storage* inlined_ptr = other_storage_ptr;
+    if (!allocated_ptr->GetIsAllocated()) swap(allocated_ptr, inlined_ptr);
+
+    StorageView allocated_storage_view{allocated_ptr->GetAllocatedData(),
+                                       allocated_ptr->GetSize(),
+                                       allocated_ptr->GetAllocatedCapacity()};
+
+    IteratorValueAdapter<MoveIterator> move_values(
+        MoveIterator(inlined_ptr->GetInlinedData()));
+
+    ABSL_INTERNAL_TRY {
+      inlined_vector_internal::ConstructElements(
+          inlined_ptr->GetAllocPtr(), allocated_ptr->GetInlinedData(),
+          &move_values, inlined_ptr->GetSize());
+    }
+    ABSL_INTERNAL_CATCH_ANY {
+      allocated_ptr->SetAllocatedData(allocated_storage_view.data,
+                                      allocated_storage_view.capacity);
+      ABSL_INTERNAL_RETHROW;
+    }
+
+    inlined_vector_internal::DestroyElements(inlined_ptr->GetAllocPtr(),
+                                             inlined_ptr->GetInlinedData(),
+                                             inlined_ptr->GetSize());
+
+    inlined_ptr->SetAllocatedData(allocated_storage_view.data,
+                                  allocated_storage_view.capacity);
+  }
+
+  swap(GetSizeAndIsAllocated(), other_storage_ptr->GetSizeAndIsAllocated());
+  swap(*GetAllocPtr(), *other_storage_ptr->GetAllocPtr());
+}
+
+}  // namespace inlined_vector_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_INLINED_VECTOR_INTERNAL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/layout.h b/ChattingApp 000/Pods/abseil/absl/container/internal/layout.h
new file mode 100644
index 0000000..69cc85d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/layout.h	
@@ -0,0 +1,741 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//                           MOTIVATION AND TUTORIAL
+//
+// If you want to put in a single heap allocation N doubles followed by M ints,
+// it's easy if N and M are known at compile time.
+//
+//   struct S {
+//     double a[N];
+//     int b[M];
+//   };
+//
+//   S* p = new S;
+//
+// But what if N and M are known only in run time? Class template Layout to the
+// rescue! It's a portable generalization of the technique known as struct hack.
+//
+//   // This object will tell us everything we need to know about the memory
+//   // layout of double[N] followed by int[M]. It's structurally identical to
+//   // size_t[2] that stores N and M. It's very cheap to create.
+//   const Layout<double, int> layout(N, M);
+//
+//   // Allocate enough memory for both arrays. `AllocSize()` tells us how much
+//   // memory is needed. We are free to use any allocation function we want as
+//   // long as it returns aligned memory.
+//   std::unique_ptr<unsigned char[]> p(new unsigned char[layout.AllocSize()]);
+//
+//   // Obtain the pointer to the array of doubles.
+//   // Equivalent to `reinterpret_cast<double*>(p.get())`.
+//   //
+//   // We could have written layout.Pointer<0>(p) instead. If all the types are
+//   // unique you can use either form, but if some types are repeated you must
+//   // use the index form.
+//   double* a = layout.Pointer<double>(p.get());
+//
+//   // Obtain the pointer to the array of ints.
+//   // Equivalent to `reinterpret_cast<int*>(p.get() + N * 8)`.
+//   int* b = layout.Pointer<int>(p);
+//
+// If we are unable to specify sizes of all fields, we can pass as many sizes as
+// we can to `Partial()`. In return, it'll allow us to access the fields whose
+// locations and sizes can be computed from the provided information.
+// `Partial()` comes in handy when the array sizes are embedded into the
+// allocation.
+//
+//   // size_t[1] containing N, size_t[1] containing M, double[N], int[M].
+//   using L = Layout<size_t, size_t, double, int>;
+//
+//   unsigned char* Allocate(size_t n, size_t m) {
+//     const L layout(1, 1, n, m);
+//     unsigned char* p = new unsigned char[layout.AllocSize()];
+//     *layout.Pointer<0>(p) = n;
+//     *layout.Pointer<1>(p) = m;
+//     return p;
+//   }
+//
+//   void Use(unsigned char* p) {
+//     // First, extract N and M.
+//     // Specify that the first array has only one element. Using `prefix` we
+//     // can access the first two arrays but not more.
+//     constexpr auto prefix = L::Partial(1);
+//     size_t n = *prefix.Pointer<0>(p);
+//     size_t m = *prefix.Pointer<1>(p);
+//
+//     // Now we can get pointers to the payload.
+//     const L layout(1, 1, n, m);
+//     double* a = layout.Pointer<double>(p);
+//     int* b = layout.Pointer<int>(p);
+//   }
+//
+// The layout we used above combines fixed-size with dynamically-sized fields.
+// This is quite common. Layout is optimized for this use case and generates
+// optimal code. All computations that can be performed at compile time are
+// indeed performed at compile time.
+//
+// Efficiency tip: The order of fields matters. In `Layout<T1, ..., TN>` try to
+// ensure that `alignof(T1) >= ... >= alignof(TN)`. This way you'll have no
+// padding in between arrays.
+//
+// You can manually override the alignment of an array by wrapping the type in
+// `Aligned<T, N>`. `Layout<..., Aligned<T, N>, ...>` has exactly the same API
+// and behavior as `Layout<..., T, ...>` except that the first element of the
+// array of `T` is aligned to `N` (the rest of the elements follow without
+// padding). `N` cannot be less than `alignof(T)`.
+//
+// `AllocSize()` and `Pointer()` are the most basic methods for dealing with
+// memory layouts. Check out the reference or code below to discover more.
+//
+//                            EXAMPLE
+//
+//   // Immutable move-only string with sizeof equal to sizeof(void*). The
+//   // string size and the characters are kept in the same heap allocation.
+//   class CompactString {
+//    public:
+//     CompactString(const char* s = "") {
+//       const size_t size = strlen(s);
+//       // size_t[1] followed by char[size + 1].
+//       const L layout(1, size + 1);
+//       p_.reset(new unsigned char[layout.AllocSize()]);
+//       // If running under ASAN, mark the padding bytes, if any, to catch
+//       // memory errors.
+//       layout.PoisonPadding(p_.get());
+//       // Store the size in the allocation.
+//       *layout.Pointer<size_t>(p_.get()) = size;
+//       // Store the characters in the allocation.
+//       memcpy(layout.Pointer<char>(p_.get()), s, size + 1);
+//     }
+//
+//     size_t size() const {
+//       // Equivalent to reinterpret_cast<size_t&>(*p).
+//       return *L::Partial().Pointer<size_t>(p_.get());
+//     }
+//
+//     const char* c_str() const {
+//       // Equivalent to reinterpret_cast<char*>(p.get() + sizeof(size_t)).
+//       // The argument in Partial(1) specifies that we have size_t[1] in front
+//       // of the characters.
+//       return L::Partial(1).Pointer<char>(p_.get());
+//     }
+//
+//    private:
+//     // Our heap allocation contains a size_t followed by an array of chars.
+//     using L = Layout<size_t, char>;
+//     std::unique_ptr<unsigned char[]> p_;
+//   };
+//
+//   int main() {
+//     CompactString s = "hello";
+//     assert(s.size() == 5);
+//     assert(strcmp(s.c_str(), "hello") == 0);
+//   }
+//
+//                               DOCUMENTATION
+//
+// The interface exported by this file consists of:
+// - class `Layout<>` and its public members.
+// - The public members of class `internal_layout::LayoutImpl<>`. That class
+//   isn't intended to be used directly, and its name and template parameter
+//   list are internal implementation details, but the class itself provides
+//   most of the functionality in this file. See comments on its members for
+//   detailed documentation.
+//
+// `Layout<T1,... Tn>::Partial(count1,..., countm)` (where `m` <= `n`) returns a
+// `LayoutImpl<>` object. `Layout<T1,..., Tn> layout(count1,..., countn)`
+// creates a `Layout` object, which exposes the same functionality by inheriting
+// from `LayoutImpl<>`.
+
+#ifndef ABSL_CONTAINER_INTERNAL_LAYOUT_H_
+#define ABSL_CONTAINER_INTERNAL_LAYOUT_H_
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <ostream>
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <typeinfo>
+#include <utility>
+
+#ifdef ADDRESS_SANITIZER
+#include <sanitizer/asan_interface.h>
+#endif
+
+#include "absl/meta/type_traits.h"
+#include "absl/strings/str_cat.h"
+#include "absl/types/span.h"
+#include "absl/utility/utility.h"
+
+#if defined(__GXX_RTTI)
+#define ABSL_INTERNAL_HAS_CXA_DEMANGLE
+#endif
+
+#ifdef ABSL_INTERNAL_HAS_CXA_DEMANGLE
+#include <cxxabi.h>
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+// A type wrapper that instructs `Layout` to use the specific alignment for the
+// array. `Layout<..., Aligned<T, N>, ...>` has exactly the same API
+// and behavior as `Layout<..., T, ...>` except that the first element of the
+// array of `T` is aligned to `N` (the rest of the elements follow without
+// padding).
+//
+// Requires: `N >= alignof(T)` and `N` is a power of 2.
+template <class T, size_t N>
+struct Aligned;
+
+namespace internal_layout {
+
+template <class T>
+struct NotAligned {};
+
+template <class T, size_t N>
+struct NotAligned<const Aligned<T, N>> {
+  static_assert(sizeof(T) == 0, "Aligned<T, N> cannot be const-qualified");
+};
+
+template <size_t>
+using IntToSize = size_t;
+
+template <class>
+using TypeToSize = size_t;
+
+template <class T>
+struct Type : NotAligned<T> {
+  using type = T;
+};
+
+template <class T, size_t N>
+struct Type<Aligned<T, N>> {
+  using type = T;
+};
+
+template <class T>
+struct SizeOf : NotAligned<T>, std::integral_constant<size_t, sizeof(T)> {};
+
+template <class T, size_t N>
+struct SizeOf<Aligned<T, N>> : std::integral_constant<size_t, sizeof(T)> {};
+
+// Note: workaround for https://gcc.gnu.org/PR88115
+template <class T>
+struct AlignOf : NotAligned<T> {
+  static constexpr size_t value = alignof(T);
+};
+
+template <class T, size_t N>
+struct AlignOf<Aligned<T, N>> {
+  static_assert(N % alignof(T) == 0,
+                "Custom alignment can't be lower than the type's alignment");
+  static constexpr size_t value = N;
+};
+
+// Does `Ts...` contain `T`?
+template <class T, class... Ts>
+using Contains = absl::disjunction<std::is_same<T, Ts>...>;
+
+template <class From, class To>
+using CopyConst =
+    typename std::conditional<std::is_const<From>::value, const To, To>::type;
+
+// Note: We're not qualifying this with absl:: because it doesn't compile under
+// MSVC.
+template <class T>
+using SliceType = Span<T>;
+
+// This namespace contains no types. It prevents functions defined in it from
+// being found by ADL.
+namespace adl_barrier {
+
+template <class Needle, class... Ts>
+constexpr size_t Find(Needle, Needle, Ts...) {
+  static_assert(!Contains<Needle, Ts...>(), "Duplicate element type");
+  return 0;
+}
+
+template <class Needle, class T, class... Ts>
+constexpr size_t Find(Needle, T, Ts...) {
+  return adl_barrier::Find(Needle(), Ts()...) + 1;
+}
+
+constexpr bool IsPow2(size_t n) { return !(n & (n - 1)); }
+
+// Returns `q * m` for the smallest `q` such that `q * m >= n`.
+// Requires: `m` is a power of two. It's enforced by IsLegalElementType below.
+constexpr size_t Align(size_t n, size_t m) { return (n + m - 1) & ~(m - 1); }
+
+constexpr size_t Min(size_t a, size_t b) { return b < a ? b : a; }
+
+constexpr size_t Max(size_t a) { return a; }
+
+template <class... Ts>
+constexpr size_t Max(size_t a, size_t b, Ts... rest) {
+  return adl_barrier::Max(b < a ? a : b, rest...);
+}
+
+template <class T>
+std::string TypeName() {
+  std::string out;
+  int status = 0;
+  char* demangled = nullptr;
+#ifdef ABSL_INTERNAL_HAS_CXA_DEMANGLE
+  demangled = abi::__cxa_demangle(typeid(T).name(), nullptr, nullptr, &status);
+#endif
+  if (status == 0 && demangled != nullptr) {  // Demangling succeeded.
+    absl::StrAppend(&out, "<", demangled, ">");
+    free(demangled);
+  } else {
+#if defined(__GXX_RTTI) || defined(_CPPRTTI)
+    absl::StrAppend(&out, "<", typeid(T).name(), ">");
+#endif
+  }
+  return out;
+}
+
+}  // namespace adl_barrier
+
+template <bool C>
+using EnableIf = typename std::enable_if<C, int>::type;
+
+// Can `T` be a template argument of `Layout`?
+template <class T>
+using IsLegalElementType = std::integral_constant<
+    bool, !std::is_reference<T>::value && !std::is_volatile<T>::value &&
+              !std::is_reference<typename Type<T>::type>::value &&
+              !std::is_volatile<typename Type<T>::type>::value &&
+              adl_barrier::IsPow2(AlignOf<T>::value)>;
+
+template <class Elements, class SizeSeq, class OffsetSeq>
+class LayoutImpl;
+
+// Public base class of `Layout` and the result type of `Layout::Partial()`.
+//
+// `Elements...` contains all template arguments of `Layout` that created this
+// instance.
+//
+// `SizeSeq...` is `[0, NumSizes)` where `NumSizes` is the number of arguments
+// passed to `Layout::Partial()` or `Layout::Layout()`.
+//
+// `OffsetSeq...` is `[0, NumOffsets)` where `NumOffsets` is
+// `Min(sizeof...(Elements), NumSizes + 1)` (the number of arrays for which we
+// can compute offsets).
+template <class... Elements, size_t... SizeSeq, size_t... OffsetSeq>
+class LayoutImpl<std::tuple<Elements...>, absl::index_sequence<SizeSeq...>,
+                 absl::index_sequence<OffsetSeq...>> {
+ private:
+  static_assert(sizeof...(Elements) > 0, "At least one field is required");
+  static_assert(absl::conjunction<IsLegalElementType<Elements>...>::value,
+                "Invalid element type (see IsLegalElementType)");
+
+  enum {
+    NumTypes = sizeof...(Elements),
+    NumSizes = sizeof...(SizeSeq),
+    NumOffsets = sizeof...(OffsetSeq),
+  };
+
+  // These are guaranteed by `Layout`.
+  static_assert(NumOffsets == adl_barrier::Min(NumTypes, NumSizes + 1),
+                "Internal error");
+  static_assert(NumTypes > 0, "Internal error");
+
+  // Returns the index of `T` in `Elements...`. Results in a compilation error
+  // if `Elements...` doesn't contain exactly one instance of `T`.
+  template <class T>
+  static constexpr size_t ElementIndex() {
+    static_assert(Contains<Type<T>, Type<typename Type<Elements>::type>...>(),
+                  "Type not found");
+    return adl_barrier::Find(Type<T>(),
+                             Type<typename Type<Elements>::type>()...);
+  }
+
+  template <size_t N>
+  using ElementAlignment =
+      AlignOf<typename std::tuple_element<N, std::tuple<Elements...>>::type>;
+
+ public:
+  // Element types of all arrays packed in a tuple.
+  using ElementTypes = std::tuple<typename Type<Elements>::type...>;
+
+  // Element type of the Nth array.
+  template <size_t N>
+  using ElementType = typename std::tuple_element<N, ElementTypes>::type;
+
+  constexpr explicit LayoutImpl(IntToSize<SizeSeq>... sizes)
+      : size_{sizes...} {}
+
+  // Alignment of the layout, equal to the strictest alignment of all elements.
+  // All pointers passed to the methods of layout must be aligned to this value.
+  static constexpr size_t Alignment() {
+    return adl_barrier::Max(AlignOf<Elements>::value...);
+  }
+
+  // Offset in bytes of the Nth array.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   assert(x.Offset<0>() == 0);   // The ints starts from 0.
+  //   assert(x.Offset<1>() == 16);  // The doubles starts from 16.
+  //
+  // Requires: `N <= NumSizes && N < sizeof...(Ts)`.
+  template <size_t N, EnableIf<N == 0> = 0>
+  constexpr size_t Offset() const {
+    return 0;
+  }
+
+  template <size_t N, EnableIf<N != 0> = 0>
+  constexpr size_t Offset() const {
+    static_assert(N < NumOffsets, "Index out of bounds");
+    return adl_barrier::Align(
+        Offset<N - 1>() + SizeOf<ElementType<N - 1>>() * size_[N - 1],
+        ElementAlignment<N>::value);
+  }
+
+  // Offset in bytes of the array with the specified element type. There must
+  // be exactly one such array and its zero-based index must be at most
+  // `NumSizes`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   assert(x.Offset<int>() == 0);      // The ints starts from 0.
+  //   assert(x.Offset<double>() == 16);  // The doubles starts from 16.
+  template <class T>
+  constexpr size_t Offset() const {
+    return Offset<ElementIndex<T>()>();
+  }
+
+  // Offsets in bytes of all arrays for which the offsets are known.
+  constexpr std::array<size_t, NumOffsets> Offsets() const {
+    return {{Offset<OffsetSeq>()...}};
+  }
+
+  // The number of elements in the Nth array. This is the Nth argument of
+  // `Layout::Partial()` or `Layout::Layout()` (zero-based).
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   assert(x.Size<0>() == 3);
+  //   assert(x.Size<1>() == 4);
+  //
+  // Requires: `N < NumSizes`.
+  template <size_t N>
+  constexpr size_t Size() const {
+    static_assert(N < NumSizes, "Index out of bounds");
+    return size_[N];
+  }
+
+  // The number of elements in the array with the specified element type.
+  // There must be exactly one such array and its zero-based index must be
+  // at most `NumSizes`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   assert(x.Size<int>() == 3);
+  //   assert(x.Size<double>() == 4);
+  template <class T>
+  constexpr size_t Size() const {
+    return Size<ElementIndex<T>()>();
+  }
+
+  // The number of elements of all arrays for which they are known.
+  constexpr std::array<size_t, NumSizes> Sizes() const {
+    return {{Size<SizeSeq>()...}};
+  }
+
+  // Pointer to the beginning of the Nth array.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //   int* ints = x.Pointer<0>(p);
+  //   double* doubles = x.Pointer<1>(p);
+  //
+  // Requires: `N <= NumSizes && N < sizeof...(Ts)`.
+  // Requires: `p` is aligned to `Alignment()`.
+  template <size_t N, class Char>
+  CopyConst<Char, ElementType<N>>* Pointer(Char* p) const {
+    using C = typename std::remove_const<Char>::type;
+    static_assert(
+        std::is_same<C, char>() || std::is_same<C, unsigned char>() ||
+            std::is_same<C, signed char>(),
+        "The argument must be a pointer to [const] [signed|unsigned] char");
+    constexpr size_t alignment = Alignment();
+    (void)alignment;
+    assert(reinterpret_cast<uintptr_t>(p) % alignment == 0);
+    return reinterpret_cast<CopyConst<Char, ElementType<N>>*>(p + Offset<N>());
+  }
+
+  // Pointer to the beginning of the array with the specified element type.
+  // There must be exactly one such array and its zero-based index must be at
+  // most `NumSizes`.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //   int* ints = x.Pointer<int>(p);
+  //   double* doubles = x.Pointer<double>(p);
+  //
+  // Requires: `p` is aligned to `Alignment()`.
+  template <class T, class Char>
+  CopyConst<Char, T>* Pointer(Char* p) const {
+    return Pointer<ElementIndex<T>()>(p);
+  }
+
+  // Pointers to all arrays for which pointers are known.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //
+  //   int* ints;
+  //   double* doubles;
+  //   std::tie(ints, doubles) = x.Pointers(p);
+  //
+  // Requires: `p` is aligned to `Alignment()`.
+  //
+  // Note: We're not using ElementType alias here because it does not compile
+  // under MSVC.
+  template <class Char>
+  std::tuple<CopyConst<
+      Char, typename std::tuple_element<OffsetSeq, ElementTypes>::type>*...>
+  Pointers(Char* p) const {
+    return std::tuple<CopyConst<Char, ElementType<OffsetSeq>>*...>(
+        Pointer<OffsetSeq>(p)...);
+  }
+
+  // The Nth array.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //   Span<int> ints = x.Slice<0>(p);
+  //   Span<double> doubles = x.Slice<1>(p);
+  //
+  // Requires: `N < NumSizes`.
+  // Requires: `p` is aligned to `Alignment()`.
+  template <size_t N, class Char>
+  SliceType<CopyConst<Char, ElementType<N>>> Slice(Char* p) const {
+    return SliceType<CopyConst<Char, ElementType<N>>>(Pointer<N>(p), Size<N>());
+  }
+
+  // The array with the specified element type. There must be exactly one
+  // such array and its zero-based index must be less than `NumSizes`.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //   Span<int> ints = x.Slice<int>(p);
+  //   Span<double> doubles = x.Slice<double>(p);
+  //
+  // Requires: `p` is aligned to `Alignment()`.
+  template <class T, class Char>
+  SliceType<CopyConst<Char, T>> Slice(Char* p) const {
+    return Slice<ElementIndex<T>()>(p);
+  }
+
+  // All arrays with known sizes.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];
+  //
+  //   Span<int> ints;
+  //   Span<double> doubles;
+  //   std::tie(ints, doubles) = x.Slices(p);
+  //
+  // Requires: `p` is aligned to `Alignment()`.
+  //
+  // Note: We're not using ElementType alias here because it does not compile
+  // under MSVC.
+  template <class Char>
+  std::tuple<SliceType<CopyConst<
+      Char, typename std::tuple_element<SizeSeq, ElementTypes>::type>>...>
+  Slices(Char* p) const {
+    // Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63875 (fixed
+    // in 6.1).
+    (void)p;
+    return std::tuple<SliceType<CopyConst<Char, ElementType<SizeSeq>>>...>(
+        Slice<SizeSeq>(p)...);
+  }
+
+  // The size of the allocation that fits all arrays.
+  //
+  //   // int[3], 4 bytes of padding, double[4].
+  //   Layout<int, double> x(3, 4);
+  //   unsigned char* p = new unsigned char[x.AllocSize()];  // 48 bytes
+  //
+  // Requires: `NumSizes == sizeof...(Ts)`.
+  constexpr size_t AllocSize() const {
+    static_assert(NumTypes == NumSizes, "You must specify sizes of all fields");
+    return Offset<NumTypes - 1>() +
+           SizeOf<ElementType<NumTypes - 1>>() * size_[NumTypes - 1];
+  }
+
+  // If built with --config=asan, poisons padding bytes (if any) in the
+  // allocation. The pointer must point to a memory block at least
+  // `AllocSize()` bytes in length.
+  //
+  // `Char` must be `[const] [signed|unsigned] char`.
+  //
+  // Requires: `p` is aligned to `Alignment()`.
+  template <class Char, size_t N = NumOffsets - 1, EnableIf<N == 0> = 0>
+  void PoisonPadding(const Char* p) const {
+    Pointer<0>(p);  // verify the requirements on `Char` and `p`
+  }
+
+  template <class Char, size_t N = NumOffsets - 1, EnableIf<N != 0> = 0>
+  void PoisonPadding(const Char* p) const {
+    static_assert(N < NumOffsets, "Index out of bounds");
+    (void)p;
+#ifdef ADDRESS_SANITIZER
+    PoisonPadding<Char, N - 1>(p);
+    // The `if` is an optimization. It doesn't affect the observable behaviour.
+    if (ElementAlignment<N - 1>::value % ElementAlignment<N>::value) {
+      size_t start =
+          Offset<N - 1>() + SizeOf<ElementType<N - 1>>() * size_[N - 1];
+      ASAN_POISON_MEMORY_REGION(p + start, Offset<N>() - start);
+    }
+#endif
+  }
+
+  // Human-readable description of the memory layout. Useful for debugging.
+  // Slow.
+  //
+  //   // char[5], 3 bytes of padding, int[3], 4 bytes of padding, followed
+  //   // by an unknown number of doubles.
+  //   auto x = Layout<char, int, double>::Partial(5, 3);
+  //   assert(x.DebugString() ==
+  //          "@0<char>(1)[5]; @8<int>(4)[3]; @24<double>(8)");
+  //
+  // Each field is in the following format: @offset<type>(sizeof)[size] (<type>
+  // may be missing depending on the target platform). For example,
+  // @8<int>(4)[3] means that at offset 8 we have an array of ints, where each
+  // int is 4 bytes, and we have 3 of those ints. The size of the last field may
+  // be missing (as in the example above). Only fields with known offsets are
+  // described. Type names may differ across platforms: one compiler might
+  // produce "unsigned*" where another produces "unsigned int *".
+  std::string DebugString() const {
+    const auto offsets = Offsets();
+    const size_t sizes[] = {SizeOf<ElementType<OffsetSeq>>()...};
+    const std::string types[] = {
+        adl_barrier::TypeName<ElementType<OffsetSeq>>()...};
+    std::string res = absl::StrCat("@0", types[0], "(", sizes[0], ")");
+    for (size_t i = 0; i != NumOffsets - 1; ++i) {
+      absl::StrAppend(&res, "[", size_[i], "]; @", offsets[i + 1], types[i + 1],
+                      "(", sizes[i + 1], ")");
+    }
+    // NumSizes is a constant that may be zero. Some compilers cannot see that
+    // inside the if statement "size_[NumSizes - 1]" must be valid.
+    int last = static_cast<int>(NumSizes) - 1;
+    if (NumTypes == NumSizes && last >= 0) {
+      absl::StrAppend(&res, "[", size_[last], "]");
+    }
+    return res;
+  }
+
+ private:
+  // Arguments of `Layout::Partial()` or `Layout::Layout()`.
+  size_t size_[NumSizes > 0 ? NumSizes : 1];
+};
+
+template <size_t NumSizes, class... Ts>
+using LayoutType = LayoutImpl<
+    std::tuple<Ts...>, absl::make_index_sequence<NumSizes>,
+    absl::make_index_sequence<adl_barrier::Min(sizeof...(Ts), NumSizes + 1)>>;
+
+}  // namespace internal_layout
+
+// Descriptor of arrays of various types and sizes laid out in memory one after
+// another. See the top of the file for documentation.
+//
+// Check out the public API of internal_layout::LayoutImpl above. The type is
+// internal to the library but its methods are public, and they are inherited
+// by `Layout`.
+template <class... Ts>
+class Layout : public internal_layout::LayoutType<sizeof...(Ts), Ts...> {
+ public:
+  static_assert(sizeof...(Ts) > 0, "At least one field is required");
+  static_assert(
+      absl::conjunction<internal_layout::IsLegalElementType<Ts>...>::value,
+      "Invalid element type (see IsLegalElementType)");
+
+  // The result type of `Partial()` with `NumSizes` arguments.
+  template <size_t NumSizes>
+  using PartialType = internal_layout::LayoutType<NumSizes, Ts...>;
+
+  // `Layout` knows the element types of the arrays we want to lay out in
+  // memory but not the number of elements in each array.
+  // `Partial(size1, ..., sizeN)` allows us to specify the latter. The
+  // resulting immutable object can be used to obtain pointers to the
+  // individual arrays.
+  //
+  // It's allowed to pass fewer array sizes than the number of arrays. E.g.,
+  // if all you need is to the offset of the second array, you only need to
+  // pass one argument -- the number of elements in the first array.
+  //
+  //   // int[3] followed by 4 bytes of padding and an unknown number of
+  //   // doubles.
+  //   auto x = Layout<int, double>::Partial(3);
+  //   // doubles start at byte 16.
+  //   assert(x.Offset<1>() == 16);
+  //
+  // If you know the number of elements in all arrays, you can still call
+  // `Partial()` but it's more convenient to use the constructor of `Layout`.
+  //
+  //   Layout<int, double> x(3, 5);
+  //
+  // Note: The sizes of the arrays must be specified in number of elements,
+  // not in bytes.
+  //
+  // Requires: `sizeof...(Sizes) <= sizeof...(Ts)`.
+  // Requires: all arguments are convertible to `size_t`.
+  template <class... Sizes>
+  static constexpr PartialType<sizeof...(Sizes)> Partial(Sizes&&... sizes) {
+    static_assert(sizeof...(Sizes) <= sizeof...(Ts), "");
+    return PartialType<sizeof...(Sizes)>(absl::forward<Sizes>(sizes)...);
+  }
+
+  // Creates a layout with the sizes of all arrays specified. If you know
+  // only the sizes of the first N arrays (where N can be zero), you can use
+  // `Partial()` defined above. The constructor is essentially equivalent to
+  // calling `Partial()` and passing in all array sizes; the constructor is
+  // provided as a convenient abbreviation.
+  //
+  // Note: The sizes of the arrays must be specified in number of elements,
+  // not in bytes.
+  constexpr explicit Layout(internal_layout::TypeToSize<Ts>... sizes)
+      : internal_layout::LayoutType<sizeof...(Ts), Ts...>(sizes...) {}
+};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_LAYOUT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_map.h b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_map.h
new file mode 100644
index 0000000..0a02757
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_map.h	
@@ -0,0 +1,197 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_CONTAINER_INTERNAL_RAW_HASH_MAP_H_
+#define ABSL_CONTAINER_INTERNAL_RAW_HASH_MAP_H_
+
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/container/internal/container_memory.h"
+#include "absl/container/internal/raw_hash_set.h"  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+template <class Policy, class Hash, class Eq, class Alloc>
+class raw_hash_map : public raw_hash_set<Policy, Hash, Eq, Alloc> {
+  // P is Policy. It's passed as a template argument to support maps that have
+  // incomplete types as values, as in unordered_map<K, IncompleteType>.
+  // MappedReference<> may be a non-reference type.
+  template <class P>
+  using MappedReference = decltype(P::value(
+      std::addressof(std::declval<typename raw_hash_map::reference>())));
+
+  // MappedConstReference<> may be a non-reference type.
+  template <class P>
+  using MappedConstReference = decltype(P::value(
+      std::addressof(std::declval<typename raw_hash_map::const_reference>())));
+
+  using KeyArgImpl =
+      KeyArg<IsTransparent<Eq>::value && IsTransparent<Hash>::value>;
+
+ public:
+  using key_type = typename Policy::key_type;
+  using mapped_type = typename Policy::mapped_type;
+  template <class K>
+  using key_arg = typename KeyArgImpl::template type<K, key_type>;
+
+  static_assert(!std::is_reference<key_type>::value, "");
+  // TODO(alkis): remove this assertion and verify that reference mapped_type is
+  // supported.
+  static_assert(!std::is_reference<mapped_type>::value, "");
+
+  using iterator = typename raw_hash_map::raw_hash_set::iterator;
+  using const_iterator = typename raw_hash_map::raw_hash_set::const_iterator;
+
+  raw_hash_map() {}
+  using raw_hash_map::raw_hash_set::raw_hash_set;
+
+  // The last two template parameters ensure that both arguments are rvalues
+  // (lvalue arguments are handled by the overloads below). This is necessary
+  // for supporting bitfield arguments.
+  //
+  //   union { int n : 1; };
+  //   flat_hash_map<int, int> m;
+  //   m.insert_or_assign(n, n);
+  template <class K = key_type, class V = mapped_type, K* = nullptr,
+            V* = nullptr>
+  std::pair<iterator, bool> insert_or_assign(key_arg<K>&& k, V&& v) {
+    return insert_or_assign_impl(std::forward<K>(k), std::forward<V>(v));
+  }
+
+  template <class K = key_type, class V = mapped_type, K* = nullptr>
+  std::pair<iterator, bool> insert_or_assign(key_arg<K>&& k, const V& v) {
+    return insert_or_assign_impl(std::forward<K>(k), v);
+  }
+
+  template <class K = key_type, class V = mapped_type, V* = nullptr>
+  std::pair<iterator, bool> insert_or_assign(const key_arg<K>& k, V&& v) {
+    return insert_or_assign_impl(k, std::forward<V>(v));
+  }
+
+  template <class K = key_type, class V = mapped_type>
+  std::pair<iterator, bool> insert_or_assign(const key_arg<K>& k, const V& v) {
+    return insert_or_assign_impl(k, v);
+  }
+
+  template <class K = key_type, class V = mapped_type, K* = nullptr,
+            V* = nullptr>
+  iterator insert_or_assign(const_iterator, key_arg<K>&& k, V&& v) {
+    return insert_or_assign(std::forward<K>(k), std::forward<V>(v)).first;
+  }
+
+  template <class K = key_type, class V = mapped_type, K* = nullptr>
+  iterator insert_or_assign(const_iterator, key_arg<K>&& k, const V& v) {
+    return insert_or_assign(std::forward<K>(k), v).first;
+  }
+
+  template <class K = key_type, class V = mapped_type, V* = nullptr>
+  iterator insert_or_assign(const_iterator, const key_arg<K>& k, V&& v) {
+    return insert_or_assign(k, std::forward<V>(v)).first;
+  }
+
+  template <class K = key_type, class V = mapped_type>
+  iterator insert_or_assign(const_iterator, const key_arg<K>& k, const V& v) {
+    return insert_or_assign(k, v).first;
+  }
+
+  // All `try_emplace()` overloads make the same guarantees regarding rvalue
+  // arguments as `std::unordered_map::try_emplace()`, namely that these
+  // functions will not move from rvalue arguments if insertions do not happen.
+  template <class K = key_type, class... Args,
+            typename std::enable_if<
+                !std::is_convertible<K, const_iterator>::value, int>::type = 0,
+            K* = nullptr>
+  std::pair<iterator, bool> try_emplace(key_arg<K>&& k, Args&&... args) {
+    return try_emplace_impl(std::forward<K>(k), std::forward<Args>(args)...);
+  }
+
+  template <class K = key_type, class... Args,
+            typename std::enable_if<
+                !std::is_convertible<K, const_iterator>::value, int>::type = 0>
+  std::pair<iterator, bool> try_emplace(const key_arg<K>& k, Args&&... args) {
+    return try_emplace_impl(k, std::forward<Args>(args)...);
+  }
+
+  template <class K = key_type, class... Args, K* = nullptr>
+  iterator try_emplace(const_iterator, key_arg<K>&& k, Args&&... args) {
+    return try_emplace(std::forward<K>(k), std::forward<Args>(args)...).first;
+  }
+
+  template <class K = key_type, class... Args>
+  iterator try_emplace(const_iterator, const key_arg<K>& k, Args&&... args) {
+    return try_emplace(k, std::forward<Args>(args)...).first;
+  }
+
+  template <class K = key_type, class P = Policy>
+  MappedReference<P> at(const key_arg<K>& key) {
+    auto it = this->find(key);
+    if (it == this->end()) {
+      base_internal::ThrowStdOutOfRange(
+          "absl::container_internal::raw_hash_map<>::at");
+    }
+    return Policy::value(&*it);
+  }
+
+  template <class K = key_type, class P = Policy>
+  MappedConstReference<P> at(const key_arg<K>& key) const {
+    auto it = this->find(key);
+    if (it == this->end()) {
+      base_internal::ThrowStdOutOfRange(
+          "absl::container_internal::raw_hash_map<>::at");
+    }
+    return Policy::value(&*it);
+  }
+
+  template <class K = key_type, class P = Policy, K* = nullptr>
+  MappedReference<P> operator[](key_arg<K>&& key) {
+    return Policy::value(&*try_emplace(std::forward<K>(key)).first);
+  }
+
+  template <class K = key_type, class P = Policy>
+  MappedReference<P> operator[](const key_arg<K>& key) {
+    return Policy::value(&*try_emplace(key).first);
+  }
+
+ private:
+  template <class K, class V>
+  std::pair<iterator, bool> insert_or_assign_impl(K&& k, V&& v) {
+    auto res = this->find_or_prepare_insert(k);
+    if (res.second)
+      this->emplace_at(res.first, std::forward<K>(k), std::forward<V>(v));
+    else
+      Policy::value(&*this->iterator_at(res.first)) = std::forward<V>(v);
+    return {this->iterator_at(res.first), res.second};
+  }
+
+  template <class K = key_type, class... Args>
+  std::pair<iterator, bool> try_emplace_impl(K&& k, Args&&... args) {
+    auto res = this->find_or_prepare_insert(k);
+    if (res.second)
+      this->emplace_at(res.first, std::piecewise_construct,
+                       std::forward_as_tuple(std::forward<K>(k)),
+                       std::forward_as_tuple(std::forward<Args>(args)...));
+    return {this->iterator_at(res.first), res.second};
+  }
+};
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_RAW_HASH_MAP_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.cc b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.cc
new file mode 100644
index 0000000..919ac07
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.cc	
@@ -0,0 +1,48 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/container/internal/raw_hash_set.h"
+
+#include <atomic>
+#include <cstddef>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+constexpr size_t Group::kWidth;
+
+// Returns "random" seed.
+inline size_t RandomSeed() {
+#if ABSL_HAVE_THREAD_LOCAL
+  static thread_local size_t counter = 0;
+  size_t value = ++counter;
+#else   // ABSL_HAVE_THREAD_LOCAL
+  static std::atomic<size_t> counter(0);
+  size_t value = counter.fetch_add(1, std::memory_order_relaxed);
+#endif  // ABSL_HAVE_THREAD_LOCAL
+  return value ^ static_cast<size_t>(reinterpret_cast<uintptr_t>(&counter));
+}
+
+bool ShouldInsertBackwards(size_t hash, ctrl_t* ctrl) {
+  // To avoid problems with weak hashes and single bit tests, we use % 13.
+  // TODO(kfm,sbenza): revisit after we do unconditional mixing
+  return (H1(hash, ctrl) ^ RandomSeed()) % 13 > 6;
+}
+
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.h b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.h
new file mode 100644
index 0000000..ca7be8d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/container/internal/raw_hash_set.h	
@@ -0,0 +1,1882 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// An open-addressing
+// hashtable with quadratic probing.
+//
+// This is a low level hashtable on top of which different interfaces can be
+// implemented, like flat_hash_set, node_hash_set, string_hash_set, etc.
+//
+// The table interface is similar to that of std::unordered_set. Notable
+// differences are that most member functions support heterogeneous keys when
+// BOTH the hash and eq functions are marked as transparent. They do so by
+// providing a typedef called `is_transparent`.
+//
+// When heterogeneous lookup is enabled, functions that take key_type act as if
+// they have an overload set like:
+//
+//   iterator find(const key_type& key);
+//   template <class K>
+//   iterator find(const K& key);
+//
+//   size_type erase(const key_type& key);
+//   template <class K>
+//   size_type erase(const K& key);
+//
+//   std::pair<iterator, iterator> equal_range(const key_type& key);
+//   template <class K>
+//   std::pair<iterator, iterator> equal_range(const K& key);
+//
+// When heterogeneous lookup is disabled, only the explicit `key_type` overloads
+// exist.
+//
+// find() also supports passing the hash explicitly:
+//
+//   iterator find(const key_type& key, size_t hash);
+//   template <class U>
+//   iterator find(const U& key, size_t hash);
+//
+// In addition the pointer to element and iterator stability guarantees are
+// weaker: all iterators and pointers are invalidated after a new element is
+// inserted.
+//
+// IMPLEMENTATION DETAILS
+//
+// The table stores elements inline in a slot array. In addition to the slot
+// array the table maintains some control state per slot. The extra state is one
+// byte per slot and stores empty or deleted marks, or alternatively 7 bits from
+// the hash of an occupied slot. The table is split into logical groups of
+// slots, like so:
+//
+//      Group 1         Group 2        Group 3
+// +---------------+---------------+---------------+
+// | | | | | | | | | | | | | | | | | | | | | | | | |
+// +---------------+---------------+---------------+
+//
+// On lookup the hash is split into two parts:
+// - H2: 7 bits (those stored in the control bytes)
+// - H1: the rest of the bits
+// The groups are probed using H1. For each group the slots are matched to H2 in
+// parallel. Because H2 is 7 bits (128 states) and the number of slots per group
+// is low (8 or 16) in almost all cases a match in H2 is also a lookup hit.
+//
+// On insert, once the right group is found (as in lookup), its slots are
+// filled in order.
+//
+// On erase a slot is cleared. In case the group did not have any empty slots
+// before the erase, the erased slot is marked as deleted.
+//
+// Groups without empty slots (but maybe with deleted slots) extend the probe
+// sequence. The probing algorithm is quadratic. Given N the number of groups,
+// the probing function for the i'th probe is:
+//
+//   P(0) = H1 % N
+//
+//   P(i) = (P(i - 1) + i) % N
+//
+// This probing function guarantees that after N probes, all the groups of the
+// table will be probed exactly once.
+
+#ifndef ABSL_CONTAINER_INTERNAL_RAW_HASH_SET_H_
+#define ABSL_CONTAINER_INTERNAL_RAW_HASH_SET_H_
+
+#include <algorithm>
+#include <cmath>
+#include <cstdint>
+#include <cstring>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/bits.h"
+#include "absl/base/internal/endian.h"
+#include "absl/base/port.h"
+#include "absl/container/internal/common.h"
+#include "absl/container/internal/compressed_tuple.h"
+#include "absl/container/internal/container_memory.h"
+#include "absl/container/internal/hash_policy_traits.h"
+#include "absl/container/internal/hashtable_debug_hooks.h"
+#include "absl/container/internal/hashtablez_sampler.h"
+#include "absl/container/internal/have_sse.h"
+#include "absl/container/internal/layout.h"
+#include "absl/memory/memory.h"
+#include "absl/meta/type_traits.h"
+#include "absl/utility/utility.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace container_internal {
+
+template <size_t Width>
+class probe_seq {
+ public:
+  probe_seq(size_t hash, size_t mask) {
+    assert(((mask + 1) & mask) == 0 && "not a mask");
+    mask_ = mask;
+    offset_ = hash & mask_;
+  }
+  size_t offset() const { return offset_; }
+  size_t offset(size_t i) const { return (offset_ + i) & mask_; }
+
+  void next() {
+    index_ += Width;
+    offset_ += index_;
+    offset_ &= mask_;
+  }
+  // 0-based probe index. The i-th probe in the probe sequence.
+  size_t index() const { return index_; }
+
+ private:
+  size_t mask_;
+  size_t offset_;
+  size_t index_ = 0;
+};
+
+template <class ContainerKey, class Hash, class Eq>
+struct RequireUsableKey {
+  template <class PassedKey, class... Args>
+  std::pair<
+      decltype(std::declval<const Hash&>()(std::declval<const PassedKey&>())),
+      decltype(std::declval<const Eq&>()(std::declval<const ContainerKey&>(),
+                                         std::declval<const PassedKey&>()))>*
+  operator()(const PassedKey&, const Args&...) const;
+};
+
+template <class E, class Policy, class Hash, class Eq, class... Ts>
+struct IsDecomposable : std::false_type {};
+
+template <class Policy, class Hash, class Eq, class... Ts>
+struct IsDecomposable<
+    absl::void_t<decltype(
+        Policy::apply(RequireUsableKey<typename Policy::key_type, Hash, Eq>(),
+                      std::declval<Ts>()...))>,
+    Policy, Hash, Eq, Ts...> : std::true_type {};
+
+// TODO(alkis): Switch to std::is_nothrow_swappable when gcc/clang supports it.
+template <class T>
+constexpr bool IsNoThrowSwappable() {
+  using std::swap;
+  return noexcept(swap(std::declval<T&>(), std::declval<T&>()));
+}
+
+template <typename T>
+int TrailingZeros(T x) {
+  return sizeof(T) == 8 ? base_internal::CountTrailingZerosNonZero64(
+                              static_cast<uint64_t>(x))
+                        : base_internal::CountTrailingZerosNonZero32(
+                              static_cast<uint32_t>(x));
+}
+
+template <typename T>
+int LeadingZeros(T x) {
+  return sizeof(T) == 8
+             ? base_internal::CountLeadingZeros64(static_cast<uint64_t>(x))
+             : base_internal::CountLeadingZeros32(static_cast<uint32_t>(x));
+}
+
+// An abstraction over a bitmask. It provides an easy way to iterate through the
+// indexes of the set bits of a bitmask.  When Shift=0 (platforms with SSE),
+// this is a true bitmask.  On non-SSE, platforms the arithematic used to
+// emulate the SSE behavior works in bytes (Shift=3) and leaves each bytes as
+// either 0x00 or 0x80.
+//
+// For example:
+//   for (int i : BitMask<uint32_t, 16>(0x5)) -> yields 0, 2
+//   for (int i : BitMask<uint64_t, 8, 3>(0x0000000080800000)) -> yields 2, 3
+template <class T, int SignificantBits, int Shift = 0>
+class BitMask {
+  static_assert(std::is_unsigned<T>::value, "");
+  static_assert(Shift == 0 || Shift == 3, "");
+
+ public:
+  // These are useful for unit tests (gunit).
+  using value_type = int;
+  using iterator = BitMask;
+  using const_iterator = BitMask;
+
+  explicit BitMask(T mask) : mask_(mask) {}
+  BitMask& operator++() {
+    mask_ &= (mask_ - 1);
+    return *this;
+  }
+  explicit operator bool() const { return mask_ != 0; }
+  int operator*() const { return LowestBitSet(); }
+  int LowestBitSet() const {
+    return container_internal::TrailingZeros(mask_) >> Shift;
+  }
+  int HighestBitSet() const {
+    return (sizeof(T) * CHAR_BIT - container_internal::LeadingZeros(mask_) -
+            1) >>
+           Shift;
+  }
+
+  BitMask begin() const { return *this; }
+  BitMask end() const { return BitMask(0); }
+
+  int TrailingZeros() const {
+    return container_internal::TrailingZeros(mask_) >> Shift;
+  }
+
+  int LeadingZeros() const {
+    constexpr int total_significant_bits = SignificantBits << Shift;
+    constexpr int extra_bits = sizeof(T) * 8 - total_significant_bits;
+    return container_internal::LeadingZeros(mask_ << extra_bits) >> Shift;
+  }
+
+ private:
+  friend bool operator==(const BitMask& a, const BitMask& b) {
+    return a.mask_ == b.mask_;
+  }
+  friend bool operator!=(const BitMask& a, const BitMask& b) {
+    return a.mask_ != b.mask_;
+  }
+
+  T mask_;
+};
+
+using ctrl_t = signed char;
+using h2_t = uint8_t;
+
+// The values here are selected for maximum performance. See the static asserts
+// below for details.
+enum Ctrl : ctrl_t {
+  kEmpty = -128,   // 0b10000000
+  kDeleted = -2,   // 0b11111110
+  kSentinel = -1,  // 0b11111111
+};
+static_assert(
+    kEmpty & kDeleted & kSentinel & 0x80,
+    "Special markers need to have the MSB to make checking for them efficient");
+static_assert(kEmpty < kSentinel && kDeleted < kSentinel,
+              "kEmpty and kDeleted must be smaller than kSentinel to make the "
+              "SIMD test of IsEmptyOrDeleted() efficient");
+static_assert(kSentinel == -1,
+              "kSentinel must be -1 to elide loading it from memory into SIMD "
+              "registers (pcmpeqd xmm, xmm)");
+static_assert(kEmpty == -128,
+              "kEmpty must be -128 to make the SIMD check for its "
+              "existence efficient (psignb xmm, xmm)");
+static_assert(~kEmpty & ~kDeleted & kSentinel & 0x7F,
+              "kEmpty and kDeleted must share an unset bit that is not shared "
+              "by kSentinel to make the scalar test for MatchEmptyOrDeleted() "
+              "efficient");
+static_assert(kDeleted == -2,
+              "kDeleted must be -2 to make the implementation of "
+              "ConvertSpecialToEmptyAndFullToDeleted efficient");
+
+// A single block of empty control bytes for tables without any slots allocated.
+// This enables removing a branch in the hot path of find().
+inline ctrl_t* EmptyGroup() {
+  alignas(16) static constexpr ctrl_t empty_group[] = {
+      kSentinel, kEmpty, kEmpty, kEmpty, kEmpty, kEmpty, kEmpty, kEmpty,
+      kEmpty,    kEmpty, kEmpty, kEmpty, kEmpty, kEmpty, kEmpty, kEmpty};
+  return const_cast<ctrl_t*>(empty_group);
+}
+
+// Mixes a randomly generated per-process seed with `hash` and `ctrl` to
+// randomize insertion order within groups.
+bool ShouldInsertBackwards(size_t hash, ctrl_t* ctrl);
+
+// Returns a hash seed.
+//
+// The seed consists of the ctrl_ pointer, which adds enough entropy to ensure
+// non-determinism of iteration order in most cases.
+inline size_t HashSeed(const ctrl_t* ctrl) {
+  // The low bits of the pointer have little or no entropy because of
+  // alignment. We shift the pointer to try to use higher entropy bits. A
+  // good number seems to be 12 bits, because that aligns with page size.
+  return reinterpret_cast<uintptr_t>(ctrl) >> 12;
+}
+
+inline size_t H1(size_t hash, const ctrl_t* ctrl) {
+  return (hash >> 7) ^ HashSeed(ctrl);
+}
+inline ctrl_t H2(size_t hash) { return hash & 0x7F; }
+
+inline bool IsEmpty(ctrl_t c) { return c == kEmpty; }
+inline bool IsFull(ctrl_t c) { return c >= 0; }
+inline bool IsDeleted(ctrl_t c) { return c == kDeleted; }
+inline bool IsEmptyOrDeleted(ctrl_t c) { return c < kSentinel; }
+
+#if SWISSTABLE_HAVE_SSE2
+
+// https://github.com/abseil/abseil-cpp/issues/209
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87853
+// _mm_cmpgt_epi8 is broken under GCC with -funsigned-char
+// Work around this by using the portable implementation of Group
+// when using -funsigned-char under GCC.
+inline __m128i _mm_cmpgt_epi8_fixed(__m128i a, __m128i b) {
+#if defined(__GNUC__) && !defined(__clang__)
+  if (std::is_unsigned<char>::value) {
+    const __m128i mask = _mm_set1_epi8(0x80);
+    const __m128i diff = _mm_subs_epi8(b, a);
+    return _mm_cmpeq_epi8(_mm_and_si128(diff, mask), mask);
+  }
+#endif
+  return _mm_cmpgt_epi8(a, b);
+}
+
+struct GroupSse2Impl {
+  static constexpr size_t kWidth = 16;  // the number of slots per group
+
+  explicit GroupSse2Impl(const ctrl_t* pos) {
+    ctrl = _mm_loadu_si128(reinterpret_cast<const __m128i*>(pos));
+  }
+
+  // Returns a bitmask representing the positions of slots that match hash.
+  BitMask<uint32_t, kWidth> Match(h2_t hash) const {
+    auto match = _mm_set1_epi8(hash);
+    return BitMask<uint32_t, kWidth>(
+        _mm_movemask_epi8(_mm_cmpeq_epi8(match, ctrl)));
+  }
+
+  // Returns a bitmask representing the positions of empty slots.
+  BitMask<uint32_t, kWidth> MatchEmpty() const {
+#if SWISSTABLE_HAVE_SSSE3
+    // This only works because kEmpty is -128.
+    return BitMask<uint32_t, kWidth>(
+        _mm_movemask_epi8(_mm_sign_epi8(ctrl, ctrl)));
+#else
+    return Match(static_cast<h2_t>(kEmpty));
+#endif
+  }
+
+  // Returns a bitmask representing the positions of empty or deleted slots.
+  BitMask<uint32_t, kWidth> MatchEmptyOrDeleted() const {
+    auto special = _mm_set1_epi8(kSentinel);
+    return BitMask<uint32_t, kWidth>(
+        _mm_movemask_epi8(_mm_cmpgt_epi8_fixed(special, ctrl)));
+  }
+
+  // Returns the number of trailing empty or deleted elements in the group.
+  uint32_t CountLeadingEmptyOrDeleted() const {
+    auto special = _mm_set1_epi8(kSentinel);
+    return TrailingZeros(
+        _mm_movemask_epi8(_mm_cmpgt_epi8_fixed(special, ctrl)) + 1);
+  }
+
+  void ConvertSpecialToEmptyAndFullToDeleted(ctrl_t* dst) const {
+    auto msbs = _mm_set1_epi8(static_cast<char>(-128));
+    auto x126 = _mm_set1_epi8(126);
+#if SWISSTABLE_HAVE_SSSE3
+    auto res = _mm_or_si128(_mm_shuffle_epi8(x126, ctrl), msbs);
+#else
+    auto zero = _mm_setzero_si128();
+    auto special_mask = _mm_cmpgt_epi8_fixed(zero, ctrl);
+    auto res = _mm_or_si128(msbs, _mm_andnot_si128(special_mask, x126));
+#endif
+    _mm_storeu_si128(reinterpret_cast<__m128i*>(dst), res);
+  }
+
+  __m128i ctrl;
+};
+#endif  // SWISSTABLE_HAVE_SSE2
+
+struct GroupPortableImpl {
+  static constexpr size_t kWidth = 8;
+
+  explicit GroupPortableImpl(const ctrl_t* pos)
+      : ctrl(little_endian::Load64(pos)) {}
+
+  BitMask<uint64_t, kWidth, 3> Match(h2_t hash) const {
+    // For the technique, see:
+    // http://graphics.stanford.edu/~seander/bithacks.html##ValueInWord
+    // (Determine if a word has a byte equal to n).
+    //
+    // Caveat: there are false positives but:
+    // - they only occur if there is a real match
+    // - they never occur on kEmpty, kDeleted, kSentinel
+    // - they will be handled gracefully by subsequent checks in code
+    //
+    // Example:
+    //   v = 0x1716151413121110
+    //   hash = 0x12
+    //   retval = (v - lsbs) & ~v & msbs = 0x0000000080800000
+    constexpr uint64_t msbs = 0x8080808080808080ULL;
+    constexpr uint64_t lsbs = 0x0101010101010101ULL;
+    auto x = ctrl ^ (lsbs * hash);
+    return BitMask<uint64_t, kWidth, 3>((x - lsbs) & ~x & msbs);
+  }
+
+  BitMask<uint64_t, kWidth, 3> MatchEmpty() const {
+    constexpr uint64_t msbs = 0x8080808080808080ULL;
+    return BitMask<uint64_t, kWidth, 3>((ctrl & (~ctrl << 6)) & msbs);
+  }
+
+  BitMask<uint64_t, kWidth, 3> MatchEmptyOrDeleted() const {
+    constexpr uint64_t msbs = 0x8080808080808080ULL;
+    return BitMask<uint64_t, kWidth, 3>((ctrl & (~ctrl << 7)) & msbs);
+  }
+
+  uint32_t CountLeadingEmptyOrDeleted() const {
+    constexpr uint64_t gaps = 0x00FEFEFEFEFEFEFEULL;
+    return (TrailingZeros(((~ctrl & (ctrl >> 7)) | gaps) + 1) + 7) >> 3;
+  }
+
+  void ConvertSpecialToEmptyAndFullToDeleted(ctrl_t* dst) const {
+    constexpr uint64_t msbs = 0x8080808080808080ULL;
+    constexpr uint64_t lsbs = 0x0101010101010101ULL;
+    auto x = ctrl & msbs;
+    auto res = (~x + (x >> 7)) & ~lsbs;
+    little_endian::Store64(dst, res);
+  }
+
+  uint64_t ctrl;
+};
+
+#if SWISSTABLE_HAVE_SSE2
+using Group = GroupSse2Impl;
+#else
+using Group = GroupPortableImpl;
+#endif
+
+template <class Policy, class Hash, class Eq, class Alloc>
+class raw_hash_set;
+
+inline bool IsValidCapacity(size_t n) { return ((n + 1) & n) == 0 && n > 0; }
+
+// PRECONDITION:
+//   IsValidCapacity(capacity)
+//   ctrl[capacity] == kSentinel
+//   ctrl[i] != kSentinel for all i < capacity
+// Applies mapping for every byte in ctrl:
+//   DELETED -> EMPTY
+//   EMPTY -> EMPTY
+//   FULL -> DELETED
+inline void ConvertDeletedToEmptyAndFullToDeleted(
+    ctrl_t* ctrl, size_t capacity) {
+  assert(ctrl[capacity] == kSentinel);
+  assert(IsValidCapacity(capacity));
+  for (ctrl_t* pos = ctrl; pos != ctrl + capacity + 1; pos += Group::kWidth) {
+    Group{pos}.ConvertSpecialToEmptyAndFullToDeleted(pos);
+  }
+  // Copy the cloned ctrl bytes.
+  std::memcpy(ctrl + capacity + 1, ctrl, Group::kWidth);
+  ctrl[capacity] = kSentinel;
+}
+
+// Rounds up the capacity to the next power of 2 minus 1, with a minimum of 1.
+inline size_t NormalizeCapacity(size_t n) {
+  return n ? ~size_t{} >> LeadingZeros(n) : 1;
+}
+
+// We use 7/8th as maximum load factor.
+// For 16-wide groups, that gives an average of two empty slots per group.
+inline size_t CapacityToGrowth(size_t capacity) {
+  assert(IsValidCapacity(capacity));
+  // `capacity*7/8`
+  if (Group::kWidth == 8 && capacity == 7) {
+    // x-x/8 does not work when x==7.
+    return 6;
+  }
+  return capacity - capacity / 8;
+}
+// From desired "growth" to a lowerbound of the necessary capacity.
+// Might not be a valid one and required NormalizeCapacity().
+inline size_t GrowthToLowerboundCapacity(size_t growth) {
+  // `growth*8/7`
+  if (Group::kWidth == 8 && growth == 7) {
+    // x+(x-1)/7 does not work when x==7.
+    return 8;
+  }
+  return growth + static_cast<size_t>((static_cast<int64_t>(growth) - 1) / 7);
+}
+
+// Policy: a policy defines how to perform different operations on
+// the slots of the hashtable (see hash_policy_traits.h for the full interface
+// of policy).
+//
+// Hash: a (possibly polymorphic) functor that hashes keys of the hashtable. The
+// functor should accept a key and return size_t as hash. For best performance
+// it is important that the hash function provides high entropy across all bits
+// of the hash.
+//
+// Eq: a (possibly polymorphic) functor that compares two keys for equality. It
+// should accept two (of possibly different type) keys and return a bool: true
+// if they are equal, false if they are not. If two keys compare equal, then
+// their hash values as defined by Hash MUST be equal.
+//
+// Allocator: an Allocator [https://devdocs.io/cpp/concept/allocator] with which
+// the storage of the hashtable will be allocated and the elements will be
+// constructed and destroyed.
+template <class Policy, class Hash, class Eq, class Alloc>
+class raw_hash_set {
+  using PolicyTraits = hash_policy_traits<Policy>;
+  using KeyArgImpl =
+      KeyArg<IsTransparent<Eq>::value && IsTransparent<Hash>::value>;
+
+ public:
+  using init_type = typename PolicyTraits::init_type;
+  using key_type = typename PolicyTraits::key_type;
+  // TODO(sbenza): Hide slot_type as it is an implementation detail. Needs user
+  // code fixes!
+  using slot_type = typename PolicyTraits::slot_type;
+  using allocator_type = Alloc;
+  using size_type = size_t;
+  using difference_type = ptrdiff_t;
+  using hasher = Hash;
+  using key_equal = Eq;
+  using policy_type = Policy;
+  using value_type = typename PolicyTraits::value_type;
+  using reference = value_type&;
+  using const_reference = const value_type&;
+  using pointer = typename absl::allocator_traits<
+      allocator_type>::template rebind_traits<value_type>::pointer;
+  using const_pointer = typename absl::allocator_traits<
+      allocator_type>::template rebind_traits<value_type>::const_pointer;
+
+  // Alias used for heterogeneous lookup functions.
+  // `key_arg<K>` evaluates to `K` when the functors are transparent and to
+  // `key_type` otherwise. It permits template argument deduction on `K` for the
+  // transparent case.
+  template <class K>
+  using key_arg = typename KeyArgImpl::template type<K, key_type>;
+
+ private:
+  // Give an early error when key_type is not hashable/eq.
+  auto KeyTypeCanBeHashed(const Hash& h, const key_type& k) -> decltype(h(k));
+  auto KeyTypeCanBeEq(const Eq& eq, const key_type& k) -> decltype(eq(k, k));
+
+  using Layout = absl::container_internal::Layout<ctrl_t, slot_type>;
+
+  static Layout MakeLayout(size_t capacity) {
+    assert(IsValidCapacity(capacity));
+    return Layout(capacity + Group::kWidth + 1, capacity);
+  }
+
+  using AllocTraits = absl::allocator_traits<allocator_type>;
+  using SlotAlloc = typename absl::allocator_traits<
+      allocator_type>::template rebind_alloc<slot_type>;
+  using SlotAllocTraits = typename absl::allocator_traits<
+      allocator_type>::template rebind_traits<slot_type>;
+
+  static_assert(std::is_lvalue_reference<reference>::value,
+                "Policy::element() must return a reference");
+
+  template <typename T>
+  struct SameAsElementReference
+      : std::is_same<typename std::remove_cv<
+                         typename std::remove_reference<reference>::type>::type,
+                     typename std::remove_cv<
+                         typename std::remove_reference<T>::type>::type> {};
+
+  // An enabler for insert(T&&): T must be convertible to init_type or be the
+  // same as [cv] value_type [ref].
+  // Note: we separate SameAsElementReference into its own type to avoid using
+  // reference unless we need to. MSVC doesn't seem to like it in some
+  // cases.
+  template <class T>
+  using RequiresInsertable = typename std::enable_if<
+      absl::disjunction<std::is_convertible<T, init_type>,
+                        SameAsElementReference<T>>::value,
+      int>::type;
+
+  // RequiresNotInit is a workaround for gcc prior to 7.1.
+  // See https://godbolt.org/g/Y4xsUh.
+  template <class T>
+  using RequiresNotInit =
+      typename std::enable_if<!std::is_same<T, init_type>::value, int>::type;
+
+  template <class... Ts>
+  using IsDecomposable = IsDecomposable<void, PolicyTraits, Hash, Eq, Ts...>;
+
+ public:
+  static_assert(std::is_same<pointer, value_type*>::value,
+                "Allocators with custom pointer types are not supported");
+  static_assert(std::is_same<const_pointer, const value_type*>::value,
+                "Allocators with custom pointer types are not supported");
+
+  class iterator {
+    friend class raw_hash_set;
+
+   public:
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = typename raw_hash_set::value_type;
+    using reference =
+        absl::conditional_t<PolicyTraits::constant_iterators::value,
+                            const value_type&, value_type&>;
+    using pointer = absl::remove_reference_t<reference>*;
+    using difference_type = typename raw_hash_set::difference_type;
+
+    iterator() {}
+
+    // PRECONDITION: not an end() iterator.
+    reference operator*() const {
+      assert_is_full();
+      return PolicyTraits::element(slot_);
+    }
+
+    // PRECONDITION: not an end() iterator.
+    pointer operator->() const { return &operator*(); }
+
+    // PRECONDITION: not an end() iterator.
+    iterator& operator++() {
+      assert_is_full();
+      ++ctrl_;
+      ++slot_;
+      skip_empty_or_deleted();
+      return *this;
+    }
+    // PRECONDITION: not an end() iterator.
+    iterator operator++(int) {
+      auto tmp = *this;
+      ++*this;
+      return tmp;
+    }
+
+    friend bool operator==(const iterator& a, const iterator& b) {
+      a.assert_is_valid();
+      b.assert_is_valid();
+      return a.ctrl_ == b.ctrl_;
+    }
+    friend bool operator!=(const iterator& a, const iterator& b) {
+      return !(a == b);
+    }
+
+   private:
+    iterator(ctrl_t* ctrl) : ctrl_(ctrl) {}  // for end()
+    iterator(ctrl_t* ctrl, slot_type* slot) : ctrl_(ctrl), slot_(slot) {}
+
+    void assert_is_full() const { assert(IsFull(*ctrl_)); }
+    void assert_is_valid() const {
+      assert(!ctrl_ || IsFull(*ctrl_) || *ctrl_ == kSentinel);
+    }
+
+    void skip_empty_or_deleted() {
+      while (IsEmptyOrDeleted(*ctrl_)) {
+        // ctrl is not necessarily aligned to Group::kWidth. It is also likely
+        // to read past the space for ctrl bytes and into slots. This is ok
+        // because ctrl has sizeof() == 1 and slot has sizeof() >= 1 so there
+        // is no way to read outside the combined slot array.
+        uint32_t shift = Group{ctrl_}.CountLeadingEmptyOrDeleted();
+        ctrl_ += shift;
+        slot_ += shift;
+      }
+    }
+
+    ctrl_t* ctrl_ = nullptr;
+    // To avoid uninitialized member warnings, put slot_ in an anonymous union.
+    // The member is not initialized on singleton and end iterators.
+    union {
+      slot_type* slot_;
+    };
+  };
+
+  class const_iterator {
+    friend class raw_hash_set;
+
+   public:
+    using iterator_category = typename iterator::iterator_category;
+    using value_type = typename raw_hash_set::value_type;
+    using reference = typename raw_hash_set::const_reference;
+    using pointer = typename raw_hash_set::const_pointer;
+    using difference_type = typename raw_hash_set::difference_type;
+
+    const_iterator() {}
+    // Implicit construction from iterator.
+    const_iterator(iterator i) : inner_(std::move(i)) {}
+
+    reference operator*() const { return *inner_; }
+    pointer operator->() const { return inner_.operator->(); }
+
+    const_iterator& operator++() {
+      ++inner_;
+      return *this;
+    }
+    const_iterator operator++(int) { return inner_++; }
+
+    friend bool operator==(const const_iterator& a, const const_iterator& b) {
+      return a.inner_ == b.inner_;
+    }
+    friend bool operator!=(const const_iterator& a, const const_iterator& b) {
+      return !(a == b);
+    }
+
+   private:
+    const_iterator(const ctrl_t* ctrl, const slot_type* slot)
+        : inner_(const_cast<ctrl_t*>(ctrl), const_cast<slot_type*>(slot)) {}
+
+    iterator inner_;
+  };
+
+  using node_type = node_handle<Policy, hash_policy_traits<Policy>, Alloc>;
+  using insert_return_type = InsertReturnType<iterator, node_type>;
+
+  raw_hash_set() noexcept(
+      std::is_nothrow_default_constructible<hasher>::value&&
+          std::is_nothrow_default_constructible<key_equal>::value&&
+              std::is_nothrow_default_constructible<allocator_type>::value) {}
+
+  explicit raw_hash_set(size_t bucket_count, const hasher& hash = hasher(),
+                        const key_equal& eq = key_equal(),
+                        const allocator_type& alloc = allocator_type())
+      : ctrl_(EmptyGroup()), settings_(0, hash, eq, alloc) {
+    if (bucket_count) {
+      capacity_ = NormalizeCapacity(bucket_count);
+      reset_growth_left();
+      initialize_slots();
+    }
+  }
+
+  raw_hash_set(size_t bucket_count, const hasher& hash,
+               const allocator_type& alloc)
+      : raw_hash_set(bucket_count, hash, key_equal(), alloc) {}
+
+  raw_hash_set(size_t bucket_count, const allocator_type& alloc)
+      : raw_hash_set(bucket_count, hasher(), key_equal(), alloc) {}
+
+  explicit raw_hash_set(const allocator_type& alloc)
+      : raw_hash_set(0, hasher(), key_equal(), alloc) {}
+
+  template <class InputIter>
+  raw_hash_set(InputIter first, InputIter last, size_t bucket_count = 0,
+               const hasher& hash = hasher(), const key_equal& eq = key_equal(),
+               const allocator_type& alloc = allocator_type())
+      : raw_hash_set(bucket_count, hash, eq, alloc) {
+    insert(first, last);
+  }
+
+  template <class InputIter>
+  raw_hash_set(InputIter first, InputIter last, size_t bucket_count,
+               const hasher& hash, const allocator_type& alloc)
+      : raw_hash_set(first, last, bucket_count, hash, key_equal(), alloc) {}
+
+  template <class InputIter>
+  raw_hash_set(InputIter first, InputIter last, size_t bucket_count,
+               const allocator_type& alloc)
+      : raw_hash_set(first, last, bucket_count, hasher(), key_equal(), alloc) {}
+
+  template <class InputIter>
+  raw_hash_set(InputIter first, InputIter last, const allocator_type& alloc)
+      : raw_hash_set(first, last, 0, hasher(), key_equal(), alloc) {}
+
+  // Instead of accepting std::initializer_list<value_type> as the first
+  // argument like std::unordered_set<value_type> does, we have two overloads
+  // that accept std::initializer_list<T> and std::initializer_list<init_type>.
+  // This is advantageous for performance.
+  //
+  //   // Turns {"abc", "def"} into std::initializer_list<std::string>, then
+  //   // copies the strings into the set.
+  //   std::unordered_set<std::string> s = {"abc", "def"};
+  //
+  //   // Turns {"abc", "def"} into std::initializer_list<const char*>, then
+  //   // copies the strings into the set.
+  //   absl::flat_hash_set<std::string> s = {"abc", "def"};
+  //
+  // The same trick is used in insert().
+  //
+  // The enabler is necessary to prevent this constructor from triggering where
+  // the copy constructor is meant to be called.
+  //
+  //   absl::flat_hash_set<int> a, b{a};
+  //
+  // RequiresNotInit<T> is a workaround for gcc prior to 7.1.
+  template <class T, RequiresNotInit<T> = 0, RequiresInsertable<T> = 0>
+  raw_hash_set(std::initializer_list<T> init, size_t bucket_count = 0,
+               const hasher& hash = hasher(), const key_equal& eq = key_equal(),
+               const allocator_type& alloc = allocator_type())
+      : raw_hash_set(init.begin(), init.end(), bucket_count, hash, eq, alloc) {}
+
+  raw_hash_set(std::initializer_list<init_type> init, size_t bucket_count = 0,
+               const hasher& hash = hasher(), const key_equal& eq = key_equal(),
+               const allocator_type& alloc = allocator_type())
+      : raw_hash_set(init.begin(), init.end(), bucket_count, hash, eq, alloc) {}
+
+  template <class T, RequiresNotInit<T> = 0, RequiresInsertable<T> = 0>
+  raw_hash_set(std::initializer_list<T> init, size_t bucket_count,
+               const hasher& hash, const allocator_type& alloc)
+      : raw_hash_set(init, bucket_count, hash, key_equal(), alloc) {}
+
+  raw_hash_set(std::initializer_list<init_type> init, size_t bucket_count,
+               const hasher& hash, const allocator_type& alloc)
+      : raw_hash_set(init, bucket_count, hash, key_equal(), alloc) {}
+
+  template <class T, RequiresNotInit<T> = 0, RequiresInsertable<T> = 0>
+  raw_hash_set(std::initializer_list<T> init, size_t bucket_count,
+               const allocator_type& alloc)
+      : raw_hash_set(init, bucket_count, hasher(), key_equal(), alloc) {}
+
+  raw_hash_set(std::initializer_list<init_type> init, size_t bucket_count,
+               const allocator_type& alloc)
+      : raw_hash_set(init, bucket_count, hasher(), key_equal(), alloc) {}
+
+  template <class T, RequiresNotInit<T> = 0, RequiresInsertable<T> = 0>
+  raw_hash_set(std::initializer_list<T> init, const allocator_type& alloc)
+      : raw_hash_set(init, 0, hasher(), key_equal(), alloc) {}
+
+  raw_hash_set(std::initializer_list<init_type> init,
+               const allocator_type& alloc)
+      : raw_hash_set(init, 0, hasher(), key_equal(), alloc) {}
+
+  raw_hash_set(const raw_hash_set& that)
+      : raw_hash_set(that, AllocTraits::select_on_container_copy_construction(
+                               that.alloc_ref())) {}
+
+  raw_hash_set(const raw_hash_set& that, const allocator_type& a)
+      : raw_hash_set(0, that.hash_ref(), that.eq_ref(), a) {
+    reserve(that.size());
+    // Because the table is guaranteed to be empty, we can do something faster
+    // than a full `insert`.
+    for (const auto& v : that) {
+      const size_t hash = PolicyTraits::apply(HashElement{hash_ref()}, v);
+      auto target = find_first_non_full(hash);
+      set_ctrl(target.offset, H2(hash));
+      emplace_at(target.offset, v);
+      infoz_.RecordInsert(hash, target.probe_length);
+    }
+    size_ = that.size();
+    growth_left() -= that.size();
+  }
+
+  raw_hash_set(raw_hash_set&& that) noexcept(
+      std::is_nothrow_copy_constructible<hasher>::value&&
+          std::is_nothrow_copy_constructible<key_equal>::value&&
+              std::is_nothrow_copy_constructible<allocator_type>::value)
+      : ctrl_(absl::exchange(that.ctrl_, EmptyGroup())),
+        slots_(absl::exchange(that.slots_, nullptr)),
+        size_(absl::exchange(that.size_, 0)),
+        capacity_(absl::exchange(that.capacity_, 0)),
+        infoz_(absl::exchange(that.infoz_, HashtablezInfoHandle())),
+        // Hash, equality and allocator are copied instead of moved because
+        // `that` must be left valid. If Hash is std::function<Key>, moving it
+        // would create a nullptr functor that cannot be called.
+        settings_(that.settings_) {
+    // growth_left was copied above, reset the one from `that`.
+    that.growth_left() = 0;
+  }
+
+  raw_hash_set(raw_hash_set&& that, const allocator_type& a)
+      : ctrl_(EmptyGroup()),
+        slots_(nullptr),
+        size_(0),
+        capacity_(0),
+        settings_(0, that.hash_ref(), that.eq_ref(), a) {
+    if (a == that.alloc_ref()) {
+      std::swap(ctrl_, that.ctrl_);
+      std::swap(slots_, that.slots_);
+      std::swap(size_, that.size_);
+      std::swap(capacity_, that.capacity_);
+      std::swap(growth_left(), that.growth_left());
+      std::swap(infoz_, that.infoz_);
+    } else {
+      reserve(that.size());
+      // Note: this will copy elements of dense_set and unordered_set instead of
+      // moving them. This can be fixed if it ever becomes an issue.
+      for (auto& elem : that) insert(std::move(elem));
+    }
+  }
+
+  raw_hash_set& operator=(const raw_hash_set& that) {
+    raw_hash_set tmp(that,
+                     AllocTraits::propagate_on_container_copy_assignment::value
+                         ? that.alloc_ref()
+                         : alloc_ref());
+    swap(tmp);
+    return *this;
+  }
+
+  raw_hash_set& operator=(raw_hash_set&& that) noexcept(
+      absl::allocator_traits<allocator_type>::is_always_equal::value&&
+          std::is_nothrow_move_assignable<hasher>::value&&
+              std::is_nothrow_move_assignable<key_equal>::value) {
+    // TODO(sbenza): We should only use the operations from the noexcept clause
+    // to make sure we actually adhere to that contract.
+    return move_assign(
+        std::move(that),
+        typename AllocTraits::propagate_on_container_move_assignment());
+  }
+
+  ~raw_hash_set() { destroy_slots(); }
+
+  iterator begin() {
+    auto it = iterator_at(0);
+    it.skip_empty_or_deleted();
+    return it;
+  }
+  iterator end() { return {ctrl_ + capacity_}; }
+
+  const_iterator begin() const {
+    return const_cast<raw_hash_set*>(this)->begin();
+  }
+  const_iterator end() const { return const_cast<raw_hash_set*>(this)->end(); }
+  const_iterator cbegin() const { return begin(); }
+  const_iterator cend() const { return end(); }
+
+  bool empty() const { return !size(); }
+  size_t size() const { return size_; }
+  size_t capacity() const { return capacity_; }
+  size_t max_size() const { return (std::numeric_limits<size_t>::max)(); }
+
+  ABSL_ATTRIBUTE_REINITIALIZES void clear() {
+    // Iterating over this container is O(bucket_count()). When bucket_count()
+    // is much greater than size(), iteration becomes prohibitively expensive.
+    // For clear() it is more important to reuse the allocated array when the
+    // container is small because allocation takes comparatively long time
+    // compared to destruction of the elements of the container. So we pick the
+    // largest bucket_count() threshold for which iteration is still fast and
+    // past that we simply deallocate the array.
+    if (capacity_ > 127) {
+      destroy_slots();
+    } else if (capacity_) {
+      for (size_t i = 0; i != capacity_; ++i) {
+        if (IsFull(ctrl_[i])) {
+          PolicyTraits::destroy(&alloc_ref(), slots_ + i);
+        }
+      }
+      size_ = 0;
+      reset_ctrl();
+      reset_growth_left();
+    }
+    assert(empty());
+    infoz_.RecordStorageChanged(0, capacity_);
+  }
+
+  // This overload kicks in when the argument is an rvalue of insertable and
+  // decomposable type other than init_type.
+  //
+  //   flat_hash_map<std::string, int> m;
+  //   m.insert(std::make_pair("abc", 42));
+  // TODO(cheshire): A type alias T2 is introduced as a workaround for the nvcc
+  // bug.
+  template <class T, RequiresInsertable<T> = 0,
+            class T2 = T,
+            typename std::enable_if<IsDecomposable<T2>::value, int>::type = 0,
+            T* = nullptr>
+  std::pair<iterator, bool> insert(T&& value) {
+    return emplace(std::forward<T>(value));
+  }
+
+  // This overload kicks in when the argument is a bitfield or an lvalue of
+  // insertable and decomposable type.
+  //
+  //   union { int n : 1; };
+  //   flat_hash_set<int> s;
+  //   s.insert(n);
+  //
+  //   flat_hash_set<std::string> s;
+  //   const char* p = "hello";
+  //   s.insert(p);
+  //
+  // TODO(romanp): Once we stop supporting gcc 5.1 and below, replace
+  // RequiresInsertable<T> with RequiresInsertable<const T&>.
+  // We are hitting this bug: https://godbolt.org/g/1Vht4f.
+  template <
+      class T, RequiresInsertable<T> = 0,
+      typename std::enable_if<IsDecomposable<const T&>::value, int>::type = 0>
+  std::pair<iterator, bool> insert(const T& value) {
+    return emplace(value);
+  }
+
+  // This overload kicks in when the argument is an rvalue of init_type. Its
+  // purpose is to handle brace-init-list arguments.
+  //
+  //   flat_hash_map<std::string, int> s;
+  //   s.insert({"abc", 42});
+  std::pair<iterator, bool> insert(init_type&& value) {
+    return emplace(std::move(value));
+  }
+
+  // TODO(cheshire): A type alias T2 is introduced as a workaround for the nvcc
+  // bug.
+  template <class T, RequiresInsertable<T> = 0, class T2 = T,
+            typename std::enable_if<IsDecomposable<T2>::value, int>::type = 0,
+            T* = nullptr>
+  iterator insert(const_iterator, T&& value) {
+    return insert(std::forward<T>(value)).first;
+  }
+
+  // TODO(romanp): Once we stop supporting gcc 5.1 and below, replace
+  // RequiresInsertable<T> with RequiresInsertable<const T&>.
+  // We are hitting this bug: https://godbolt.org/g/1Vht4f.
+  template <
+      class T, RequiresInsertable<T> = 0,
+      typename std::enable_if<IsDecomposable<const T&>::value, int>::type = 0>
+  iterator insert(const_iterator, const T& value) {
+    return insert(value).first;
+  }
+
+  iterator insert(const_iterator, init_type&& value) {
+    return insert(std::move(value)).first;
+  }
+
+  template <class InputIt>
+  void insert(InputIt first, InputIt last) {
+    for (; first != last; ++first) insert(*first);
+  }
+
+  template <class T, RequiresNotInit<T> = 0, RequiresInsertable<const T&> = 0>
+  void insert(std::initializer_list<T> ilist) {
+    insert(ilist.begin(), ilist.end());
+  }
+
+  void insert(std::initializer_list<init_type> ilist) {
+    insert(ilist.begin(), ilist.end());
+  }
+
+  insert_return_type insert(node_type&& node) {
+    if (!node) return {end(), false, node_type()};
+    const auto& elem = PolicyTraits::element(CommonAccess::GetSlot(node));
+    auto res = PolicyTraits::apply(
+        InsertSlot<false>{*this, std::move(*CommonAccess::GetSlot(node))},
+        elem);
+    if (res.second) {
+      CommonAccess::Reset(&node);
+      return {res.first, true, node_type()};
+    } else {
+      return {res.first, false, std::move(node)};
+    }
+  }
+
+  iterator insert(const_iterator, node_type&& node) {
+    return insert(std::move(node)).first;
+  }
+
+  // This overload kicks in if we can deduce the key from args. This enables us
+  // to avoid constructing value_type if an entry with the same key already
+  // exists.
+  //
+  // For example:
+  //
+  //   flat_hash_map<std::string, std::string> m = {{"abc", "def"}};
+  //   // Creates no std::string copies and makes no heap allocations.
+  //   m.emplace("abc", "xyz");
+  template <class... Args, typename std::enable_if<
+                               IsDecomposable<Args...>::value, int>::type = 0>
+  std::pair<iterator, bool> emplace(Args&&... args) {
+    return PolicyTraits::apply(EmplaceDecomposable{*this},
+                               std::forward<Args>(args)...);
+  }
+
+  // This overload kicks in if we cannot deduce the key from args. It constructs
+  // value_type unconditionally and then either moves it into the table or
+  // destroys.
+  template <class... Args, typename std::enable_if<
+                               !IsDecomposable<Args...>::value, int>::type = 0>
+  std::pair<iterator, bool> emplace(Args&&... args) {
+    alignas(slot_type) unsigned char raw[sizeof(slot_type)];
+    slot_type* slot = reinterpret_cast<slot_type*>(&raw);
+
+    PolicyTraits::construct(&alloc_ref(), slot, std::forward<Args>(args)...);
+    const auto& elem = PolicyTraits::element(slot);
+    return PolicyTraits::apply(InsertSlot<true>{*this, std::move(*slot)}, elem);
+  }
+
+  template <class... Args>
+  iterator emplace_hint(const_iterator, Args&&... args) {
+    return emplace(std::forward<Args>(args)...).first;
+  }
+
+  // Extension API: support for lazy emplace.
+  //
+  // Looks up key in the table. If found, returns the iterator to the element.
+  // Otherwise calls `f` with one argument of type `raw_hash_set::constructor`.
+  //
+  // `f` must abide by several restrictions:
+  //  - it MUST call `raw_hash_set::constructor` with arguments as if a
+  //    `raw_hash_set::value_type` is constructed,
+  //  - it MUST NOT access the container before the call to
+  //    `raw_hash_set::constructor`, and
+  //  - it MUST NOT erase the lazily emplaced element.
+  // Doing any of these is undefined behavior.
+  //
+  // For example:
+  //
+  //   std::unordered_set<ArenaString> s;
+  //   // Makes ArenaStr even if "abc" is in the map.
+  //   s.insert(ArenaString(&arena, "abc"));
+  //
+  //   flat_hash_set<ArenaStr> s;
+  //   // Makes ArenaStr only if "abc" is not in the map.
+  //   s.lazy_emplace("abc", [&](const constructor& ctor) {
+  //     ctor(&arena, "abc");
+  //   });
+  //
+  // WARNING: This API is currently experimental. If there is a way to implement
+  // the same thing with the rest of the API, prefer that.
+  class constructor {
+    friend class raw_hash_set;
+
+   public:
+    template <class... Args>
+    void operator()(Args&&... args) const {
+      assert(*slot_);
+      PolicyTraits::construct(alloc_, *slot_, std::forward<Args>(args)...);
+      *slot_ = nullptr;
+    }
+
+   private:
+    constructor(allocator_type* a, slot_type** slot) : alloc_(a), slot_(slot) {}
+
+    allocator_type* alloc_;
+    slot_type** slot_;
+  };
+
+  template <class K = key_type, class F>
+  iterator lazy_emplace(const key_arg<K>& key, F&& f) {
+    auto res = find_or_prepare_insert(key);
+    if (res.second) {
+      slot_type* slot = slots_ + res.first;
+      std::forward<F>(f)(constructor(&alloc_ref(), &slot));
+      assert(!slot);
+    }
+    return iterator_at(res.first);
+  }
+
+  // Extension API: support for heterogeneous keys.
+  //
+  //   std::unordered_set<std::string> s;
+  //   // Turns "abc" into std::string.
+  //   s.erase("abc");
+  //
+  //   flat_hash_set<std::string> s;
+  //   // Uses "abc" directly without copying it into std::string.
+  //   s.erase("abc");
+  template <class K = key_type>
+  size_type erase(const key_arg<K>& key) {
+    auto it = find(key);
+    if (it == end()) return 0;
+    erase(it);
+    return 1;
+  }
+
+  // Erases the element pointed to by `it`.  Unlike `std::unordered_set::erase`,
+  // this method returns void to reduce algorithmic complexity to O(1).  The
+  // iterator is invalidated, so any increment should be done before calling
+  // erase.  In order to erase while iterating across a map, use the following
+  // idiom (which also works for standard containers):
+  //
+  // for (auto it = m.begin(), end = m.end(); it != end;) {
+  //   // `erase()` will invalidate `it`, so advance `it` first.
+  //   auto copy_it = it++;
+  //   if (<pred>) {
+  //     m.erase(copy_it);
+  //   }
+  // }
+  void erase(const_iterator cit) { erase(cit.inner_); }
+
+  // This overload is necessary because otherwise erase<K>(const K&) would be
+  // a better match if non-const iterator is passed as an argument.
+  void erase(iterator it) {
+    it.assert_is_full();
+    PolicyTraits::destroy(&alloc_ref(), it.slot_);
+    erase_meta_only(it);
+  }
+
+  iterator erase(const_iterator first, const_iterator last) {
+    while (first != last) {
+      erase(first++);
+    }
+    return last.inner_;
+  }
+
+  // Moves elements from `src` into `this`.
+  // If the element already exists in `this`, it is left unmodified in `src`.
+  template <typename H, typename E>
+  void merge(raw_hash_set<Policy, H, E, Alloc>& src) {  // NOLINT
+    assert(this != &src);
+    for (auto it = src.begin(), e = src.end(); it != e;) {
+      auto next = std::next(it);
+      if (PolicyTraits::apply(InsertSlot<false>{*this, std::move(*it.slot_)},
+                              PolicyTraits::element(it.slot_))
+              .second) {
+        src.erase_meta_only(it);
+      }
+      it = next;
+    }
+  }
+
+  template <typename H, typename E>
+  void merge(raw_hash_set<Policy, H, E, Alloc>&& src) {
+    merge(src);
+  }
+
+  node_type extract(const_iterator position) {
+    position.inner_.assert_is_full();
+    auto node =
+        CommonAccess::Transfer<node_type>(alloc_ref(), position.inner_.slot_);
+    erase_meta_only(position);
+    return node;
+  }
+
+  template <
+      class K = key_type,
+      typename std::enable_if<!std::is_same<K, iterator>::value, int>::type = 0>
+  node_type extract(const key_arg<K>& key) {
+    auto it = find(key);
+    return it == end() ? node_type() : extract(const_iterator{it});
+  }
+
+  void swap(raw_hash_set& that) noexcept(
+      IsNoThrowSwappable<hasher>() && IsNoThrowSwappable<key_equal>() &&
+      (!AllocTraits::propagate_on_container_swap::value ||
+       IsNoThrowSwappable<allocator_type>())) {
+    using std::swap;
+    swap(ctrl_, that.ctrl_);
+    swap(slots_, that.slots_);
+    swap(size_, that.size_);
+    swap(capacity_, that.capacity_);
+    swap(growth_left(), that.growth_left());
+    swap(hash_ref(), that.hash_ref());
+    swap(eq_ref(), that.eq_ref());
+    swap(infoz_, that.infoz_);
+    if (AllocTraits::propagate_on_container_swap::value) {
+      swap(alloc_ref(), that.alloc_ref());
+    } else {
+      // If the allocators do not compare equal it is officially undefined
+      // behavior. We choose to do nothing.
+    }
+  }
+
+  void rehash(size_t n) {
+    if (n == 0 && capacity_ == 0) return;
+    if (n == 0 && size_ == 0) {
+      destroy_slots();
+      infoz_.RecordStorageChanged(0, 0);
+      return;
+    }
+    // bitor is a faster way of doing `max` here. We will round up to the next
+    // power-of-2-minus-1, so bitor is good enough.
+    auto m = NormalizeCapacity(n | GrowthToLowerboundCapacity(size()));
+    // n == 0 unconditionally rehashes as per the standard.
+    if (n == 0 || m > capacity_) {
+      resize(m);
+    }
+  }
+
+  void reserve(size_t n) { rehash(GrowthToLowerboundCapacity(n)); }
+
+  // Extension API: support for heterogeneous keys.
+  //
+  //   std::unordered_set<std::string> s;
+  //   // Turns "abc" into std::string.
+  //   s.count("abc");
+  //
+  //   ch_set<std::string> s;
+  //   // Uses "abc" directly without copying it into std::string.
+  //   s.count("abc");
+  template <class K = key_type>
+  size_t count(const key_arg<K>& key) const {
+    return find(key) == end() ? 0 : 1;
+  }
+
+  // Issues CPU prefetch instructions for the memory needed to find or insert
+  // a key.  Like all lookup functions, this support heterogeneous keys.
+  //
+  // NOTE: This is a very low level operation and should not be used without
+  // specific benchmarks indicating its importance.
+  template <class K = key_type>
+  void prefetch(const key_arg<K>& key) const {
+    (void)key;
+#if defined(__GNUC__)
+    auto seq = probe(hash_ref()(key));
+    __builtin_prefetch(static_cast<const void*>(ctrl_ + seq.offset()));
+    __builtin_prefetch(static_cast<const void*>(slots_ + seq.offset()));
+#endif  // __GNUC__
+  }
+
+  // The API of find() has two extensions.
+  //
+  // 1. The hash can be passed by the user. It must be equal to the hash of the
+  // key.
+  //
+  // 2. The type of the key argument doesn't have to be key_type. This is so
+  // called heterogeneous key support.
+  template <class K = key_type>
+  iterator find(const key_arg<K>& key, size_t hash) {
+    auto seq = probe(hash);
+    while (true) {
+      Group g{ctrl_ + seq.offset()};
+      for (int i : g.Match(H2(hash))) {
+        if (ABSL_PREDICT_TRUE(PolicyTraits::apply(
+                EqualElement<K>{key, eq_ref()},
+                PolicyTraits::element(slots_ + seq.offset(i)))))
+          return iterator_at(seq.offset(i));
+      }
+      if (ABSL_PREDICT_TRUE(g.MatchEmpty())) return end();
+      seq.next();
+    }
+  }
+  template <class K = key_type>
+  iterator find(const key_arg<K>& key) {
+    return find(key, hash_ref()(key));
+  }
+
+  template <class K = key_type>
+  const_iterator find(const key_arg<K>& key, size_t hash) const {
+    return const_cast<raw_hash_set*>(this)->find(key, hash);
+  }
+  template <class K = key_type>
+  const_iterator find(const key_arg<K>& key) const {
+    return find(key, hash_ref()(key));
+  }
+
+  template <class K = key_type>
+  bool contains(const key_arg<K>& key) const {
+    return find(key) != end();
+  }
+
+  template <class K = key_type>
+  std::pair<iterator, iterator> equal_range(const key_arg<K>& key) {
+    auto it = find(key);
+    if (it != end()) return {it, std::next(it)};
+    return {it, it};
+  }
+  template <class K = key_type>
+  std::pair<const_iterator, const_iterator> equal_range(
+      const key_arg<K>& key) const {
+    auto it = find(key);
+    if (it != end()) return {it, std::next(it)};
+    return {it, it};
+  }
+
+  size_t bucket_count() const { return capacity_; }
+  float load_factor() const {
+    return capacity_ ? static_cast<double>(size()) / capacity_ : 0.0;
+  }
+  float max_load_factor() const { return 1.0f; }
+  void max_load_factor(float) {
+    // Does nothing.
+  }
+
+  hasher hash_function() const { return hash_ref(); }
+  key_equal key_eq() const { return eq_ref(); }
+  allocator_type get_allocator() const { return alloc_ref(); }
+
+  friend bool operator==(const raw_hash_set& a, const raw_hash_set& b) {
+    if (a.size() != b.size()) return false;
+    const raw_hash_set* outer = &a;
+    const raw_hash_set* inner = &b;
+    if (outer->capacity() > inner->capacity()) std::swap(outer, inner);
+    for (const value_type& elem : *outer)
+      if (!inner->has_element(elem)) return false;
+    return true;
+  }
+
+  friend bool operator!=(const raw_hash_set& a, const raw_hash_set& b) {
+    return !(a == b);
+  }
+
+  friend void swap(raw_hash_set& a,
+                   raw_hash_set& b) noexcept(noexcept(a.swap(b))) {
+    a.swap(b);
+  }
+
+ private:
+  template <class Container, typename Enabler>
+  friend struct absl::container_internal::hashtable_debug_internal::
+      HashtableDebugAccess;
+
+  struct FindElement {
+    template <class K, class... Args>
+    const_iterator operator()(const K& key, Args&&...) const {
+      return s.find(key);
+    }
+    const raw_hash_set& s;
+  };
+
+  struct HashElement {
+    template <class K, class... Args>
+    size_t operator()(const K& key, Args&&...) const {
+      return h(key);
+    }
+    const hasher& h;
+  };
+
+  template <class K1>
+  struct EqualElement {
+    template <class K2, class... Args>
+    bool operator()(const K2& lhs, Args&&...) const {
+      return eq(lhs, rhs);
+    }
+    const K1& rhs;
+    const key_equal& eq;
+  };
+
+  struct EmplaceDecomposable {
+    template <class K, class... Args>
+    std::pair<iterator, bool> operator()(const K& key, Args&&... args) const {
+      auto res = s.find_or_prepare_insert(key);
+      if (res.second) {
+        s.emplace_at(res.first, std::forward<Args>(args)...);
+      }
+      return {s.iterator_at(res.first), res.second};
+    }
+    raw_hash_set& s;
+  };
+
+  template <bool do_destroy>
+  struct InsertSlot {
+    template <class K, class... Args>
+    std::pair<iterator, bool> operator()(const K& key, Args&&...) && {
+      auto res = s.find_or_prepare_insert(key);
+      if (res.second) {
+        PolicyTraits::transfer(&s.alloc_ref(), s.slots_ + res.first, &slot);
+      } else if (do_destroy) {
+        PolicyTraits::destroy(&s.alloc_ref(), &slot);
+      }
+      return {s.iterator_at(res.first), res.second};
+    }
+    raw_hash_set& s;
+    // Constructed slot. Either moved into place or destroyed.
+    slot_type&& slot;
+  };
+
+  // "erases" the object from the container, except that it doesn't actually
+  // destroy the object. It only updates all the metadata of the class.
+  // This can be used in conjunction with Policy::transfer to move the object to
+  // another place.
+  void erase_meta_only(const_iterator it) {
+    assert(IsFull(*it.inner_.ctrl_) && "erasing a dangling iterator");
+    --size_;
+    const size_t index = it.inner_.ctrl_ - ctrl_;
+    const size_t index_before = (index - Group::kWidth) & capacity_;
+    const auto empty_after = Group(it.inner_.ctrl_).MatchEmpty();
+    const auto empty_before = Group(ctrl_ + index_before).MatchEmpty();
+
+    // We count how many consecutive non empties we have to the right and to the
+    // left of `it`. If the sum is >= kWidth then there is at least one probe
+    // window that might have seen a full group.
+    bool was_never_full =
+        empty_before && empty_after &&
+        static_cast<size_t>(empty_after.TrailingZeros() +
+                            empty_before.LeadingZeros()) < Group::kWidth;
+
+    set_ctrl(index, was_never_full ? kEmpty : kDeleted);
+    growth_left() += was_never_full;
+    infoz_.RecordErase();
+  }
+
+  void initialize_slots() {
+    assert(capacity_);
+    // Folks with custom allocators often make unwarranted assumptions about the
+    // behavior of their classes vis-a-vis trivial destructability and what
+    // calls they will or wont make.  Avoid sampling for people with custom
+    // allocators to get us out of this mess.  This is not a hard guarantee but
+    // a workaround while we plan the exact guarantee we want to provide.
+    //
+    // People are often sloppy with the exact type of their allocator (sometimes
+    // it has an extra const or is missing the pair, but rebinds made it work
+    // anyway).  To avoid the ambiguity, we work off SlotAlloc which we have
+    // bound more carefully.
+    if (std::is_same<SlotAlloc, std::allocator<slot_type>>::value &&
+        slots_ == nullptr) {
+      infoz_ = Sample();
+    }
+
+    auto layout = MakeLayout(capacity_);
+    char* mem = static_cast<char*>(
+        Allocate<Layout::Alignment()>(&alloc_ref(), layout.AllocSize()));
+    ctrl_ = reinterpret_cast<ctrl_t*>(layout.template Pointer<0>(mem));
+    slots_ = layout.template Pointer<1>(mem);
+    reset_ctrl();
+    reset_growth_left();
+    infoz_.RecordStorageChanged(size_, capacity_);
+  }
+
+  void destroy_slots() {
+    if (!capacity_) return;
+    for (size_t i = 0; i != capacity_; ++i) {
+      if (IsFull(ctrl_[i])) {
+        PolicyTraits::destroy(&alloc_ref(), slots_ + i);
+      }
+    }
+    auto layout = MakeLayout(capacity_);
+    // Unpoison before returning the memory to the allocator.
+    SanitizerUnpoisonMemoryRegion(slots_, sizeof(slot_type) * capacity_);
+    Deallocate<Layout::Alignment()>(&alloc_ref(), ctrl_, layout.AllocSize());
+    ctrl_ = EmptyGroup();
+    slots_ = nullptr;
+    size_ = 0;
+    capacity_ = 0;
+    growth_left() = 0;
+  }
+
+  void resize(size_t new_capacity) {
+    assert(IsValidCapacity(new_capacity));
+    auto* old_ctrl = ctrl_;
+    auto* old_slots = slots_;
+    const size_t old_capacity = capacity_;
+    capacity_ = new_capacity;
+    initialize_slots();
+
+    size_t total_probe_length = 0;
+    for (size_t i = 0; i != old_capacity; ++i) {
+      if (IsFull(old_ctrl[i])) {
+        size_t hash = PolicyTraits::apply(HashElement{hash_ref()},
+                                          PolicyTraits::element(old_slots + i));
+        auto target = find_first_non_full(hash);
+        size_t new_i = target.offset;
+        total_probe_length += target.probe_length;
+        set_ctrl(new_i, H2(hash));
+        PolicyTraits::transfer(&alloc_ref(), slots_ + new_i, old_slots + i);
+      }
+    }
+    if (old_capacity) {
+      SanitizerUnpoisonMemoryRegion(old_slots,
+                                    sizeof(slot_type) * old_capacity);
+      auto layout = MakeLayout(old_capacity);
+      Deallocate<Layout::Alignment()>(&alloc_ref(), old_ctrl,
+                                      layout.AllocSize());
+    }
+    infoz_.RecordRehash(total_probe_length);
+  }
+
+  void drop_deletes_without_resize() ABSL_ATTRIBUTE_NOINLINE {
+    assert(IsValidCapacity(capacity_));
+    assert(!is_small());
+    // Algorithm:
+    // - mark all DELETED slots as EMPTY
+    // - mark all FULL slots as DELETED
+    // - for each slot marked as DELETED
+    //     hash = Hash(element)
+    //     target = find_first_non_full(hash)
+    //     if target is in the same group
+    //       mark slot as FULL
+    //     else if target is EMPTY
+    //       transfer element to target
+    //       mark slot as EMPTY
+    //       mark target as FULL
+    //     else if target is DELETED
+    //       swap current element with target element
+    //       mark target as FULL
+    //       repeat procedure for current slot with moved from element (target)
+    ConvertDeletedToEmptyAndFullToDeleted(ctrl_, capacity_);
+    alignas(slot_type) unsigned char raw[sizeof(slot_type)];
+    size_t total_probe_length = 0;
+    slot_type* slot = reinterpret_cast<slot_type*>(&raw);
+    for (size_t i = 0; i != capacity_; ++i) {
+      if (!IsDeleted(ctrl_[i])) continue;
+      size_t hash = PolicyTraits::apply(HashElement{hash_ref()},
+                                        PolicyTraits::element(slots_ + i));
+      auto target = find_first_non_full(hash);
+      size_t new_i = target.offset;
+      total_probe_length += target.probe_length;
+
+      // Verify if the old and new i fall within the same group wrt the hash.
+      // If they do, we don't need to move the object as it falls already in the
+      // best probe we can.
+      const auto probe_index = [&](size_t pos) {
+        return ((pos - probe(hash).offset()) & capacity_) / Group::kWidth;
+      };
+
+      // Element doesn't move.
+      if (ABSL_PREDICT_TRUE(probe_index(new_i) == probe_index(i))) {
+        set_ctrl(i, H2(hash));
+        continue;
+      }
+      if (IsEmpty(ctrl_[new_i])) {
+        // Transfer element to the empty spot.
+        // set_ctrl poisons/unpoisons the slots so we have to call it at the
+        // right time.
+        set_ctrl(new_i, H2(hash));
+        PolicyTraits::transfer(&alloc_ref(), slots_ + new_i, slots_ + i);
+        set_ctrl(i, kEmpty);
+      } else {
+        assert(IsDeleted(ctrl_[new_i]));
+        set_ctrl(new_i, H2(hash));
+        // Until we are done rehashing, DELETED marks previously FULL slots.
+        // Swap i and new_i elements.
+        PolicyTraits::transfer(&alloc_ref(), slot, slots_ + i);
+        PolicyTraits::transfer(&alloc_ref(), slots_ + i, slots_ + new_i);
+        PolicyTraits::transfer(&alloc_ref(), slots_ + new_i, slot);
+        --i;  // repeat
+      }
+    }
+    reset_growth_left();
+    infoz_.RecordRehash(total_probe_length);
+  }
+
+  void rehash_and_grow_if_necessary() {
+    if (capacity_ == 0) {
+      resize(1);
+    } else if (size() <= CapacityToGrowth(capacity()) / 2) {
+      // Squash DELETED without growing if there is enough capacity.
+      drop_deletes_without_resize();
+    } else {
+      // Otherwise grow the container.
+      resize(capacity_ * 2 + 1);
+    }
+  }
+
+  bool has_element(const value_type& elem) const {
+    size_t hash = PolicyTraits::apply(HashElement{hash_ref()}, elem);
+    auto seq = probe(hash);
+    while (true) {
+      Group g{ctrl_ + seq.offset()};
+      for (int i : g.Match(H2(hash))) {
+        if (ABSL_PREDICT_TRUE(PolicyTraits::element(slots_ + seq.offset(i)) ==
+                              elem))
+          return true;
+      }
+      if (ABSL_PREDICT_TRUE(g.MatchEmpty())) return false;
+      seq.next();
+      assert(seq.index() < capacity_ && "full table!");
+    }
+    return false;
+  }
+
+  // Probes the raw_hash_set with the probe sequence for hash and returns the
+  // pointer to the first empty or deleted slot.
+  // NOTE: this function must work with tables having both kEmpty and kDelete
+  // in one group. Such tables appears during drop_deletes_without_resize.
+  //
+  // This function is very useful when insertions happen and:
+  // - the input is already a set
+  // - there are enough slots
+  // - the element with the hash is not in the table
+  struct FindInfo {
+    size_t offset;
+    size_t probe_length;
+  };
+  FindInfo find_first_non_full(size_t hash) {
+    auto seq = probe(hash);
+    while (true) {
+      Group g{ctrl_ + seq.offset()};
+      auto mask = g.MatchEmptyOrDeleted();
+      if (mask) {
+#if !defined(NDEBUG)
+        // We want to add entropy even when ASLR is not enabled.
+        // In debug build we will randomly insert in either the front or back of
+        // the group.
+        // TODO(kfm,sbenza): revisit after we do unconditional mixing
+        if (!is_small() && ShouldInsertBackwards(hash, ctrl_)) {
+          return {seq.offset(mask.HighestBitSet()), seq.index()};
+        }
+#endif
+        return {seq.offset(mask.LowestBitSet()), seq.index()};
+      }
+      assert(seq.index() < capacity_ && "full table!");
+      seq.next();
+    }
+  }
+
+  // TODO(alkis): Optimize this assuming *this and that don't overlap.
+  raw_hash_set& move_assign(raw_hash_set&& that, std::true_type) {
+    raw_hash_set tmp(std::move(that));
+    swap(tmp);
+    return *this;
+  }
+  raw_hash_set& move_assign(raw_hash_set&& that, std::false_type) {
+    raw_hash_set tmp(std::move(that), alloc_ref());
+    swap(tmp);
+    return *this;
+  }
+
+ protected:
+  template <class K>
+  std::pair<size_t, bool> find_or_prepare_insert(const K& key) {
+    auto hash = hash_ref()(key);
+    auto seq = probe(hash);
+    while (true) {
+      Group g{ctrl_ + seq.offset()};
+      for (int i : g.Match(H2(hash))) {
+        if (ABSL_PREDICT_TRUE(PolicyTraits::apply(
+                EqualElement<K>{key, eq_ref()},
+                PolicyTraits::element(slots_ + seq.offset(i)))))
+          return {seq.offset(i), false};
+      }
+      if (ABSL_PREDICT_TRUE(g.MatchEmpty())) break;
+      seq.next();
+    }
+    return {prepare_insert(hash), true};
+  }
+
+  size_t prepare_insert(size_t hash) ABSL_ATTRIBUTE_NOINLINE {
+    auto target = find_first_non_full(hash);
+    if (ABSL_PREDICT_FALSE(growth_left() == 0 &&
+                           !IsDeleted(ctrl_[target.offset]))) {
+      rehash_and_grow_if_necessary();
+      target = find_first_non_full(hash);
+    }
+    ++size_;
+    growth_left() -= IsEmpty(ctrl_[target.offset]);
+    set_ctrl(target.offset, H2(hash));
+    infoz_.RecordInsert(hash, target.probe_length);
+    return target.offset;
+  }
+
+  // Constructs the value in the space pointed by the iterator. This only works
+  // after an unsuccessful find_or_prepare_insert() and before any other
+  // modifications happen in the raw_hash_set.
+  //
+  // PRECONDITION: i is an index returned from find_or_prepare_insert(k), where
+  // k is the key decomposed from `forward<Args>(args)...`, and the bool
+  // returned by find_or_prepare_insert(k) was true.
+  // POSTCONDITION: *m.iterator_at(i) == value_type(forward<Args>(args)...).
+  template <class... Args>
+  void emplace_at(size_t i, Args&&... args) {
+    PolicyTraits::construct(&alloc_ref(), slots_ + i,
+                            std::forward<Args>(args)...);
+
+    assert(PolicyTraits::apply(FindElement{*this}, *iterator_at(i)) ==
+               iterator_at(i) &&
+           "constructed value does not match the lookup key");
+  }
+
+  iterator iterator_at(size_t i) { return {ctrl_ + i, slots_ + i}; }
+  const_iterator iterator_at(size_t i) const { return {ctrl_ + i, slots_ + i}; }
+
+ private:
+  friend struct RawHashSetTestOnlyAccess;
+
+  probe_seq<Group::kWidth> probe(size_t hash) const {
+    return probe_seq<Group::kWidth>(H1(hash, ctrl_), capacity_);
+  }
+
+  // Reset all ctrl bytes back to kEmpty, except the sentinel.
+  void reset_ctrl() {
+    std::memset(ctrl_, kEmpty, capacity_ + Group::kWidth);
+    ctrl_[capacity_] = kSentinel;
+    SanitizerPoisonMemoryRegion(slots_, sizeof(slot_type) * capacity_);
+  }
+
+  void reset_growth_left() {
+    growth_left() = CapacityToGrowth(capacity()) - size_;
+  }
+
+  // Sets the control byte, and if `i < Group::kWidth`, set the cloned byte at
+  // the end too.
+  void set_ctrl(size_t i, ctrl_t h) {
+    assert(i < capacity_);
+
+    if (IsFull(h)) {
+      SanitizerUnpoisonObject(slots_ + i);
+    } else {
+      SanitizerPoisonObject(slots_ + i);
+    }
+
+    ctrl_[i] = h;
+    ctrl_[((i - Group::kWidth) & capacity_) + 1 +
+          ((Group::kWidth - 1) & capacity_)] = h;
+  }
+
+  size_t& growth_left() { return settings_.template get<0>(); }
+
+  // The representation of the object has two modes:
+  //  - small: For capacities < kWidth-1
+  //  - large: For the rest.
+  //
+  // Differences:
+  //  - In small mode we are able to use the whole capacity. The extra control
+  //  bytes give us at least one "empty" control byte to stop the iteration.
+  //  This is important to make 1 a valid capacity.
+  //
+  //  - In small mode only the first `capacity()` control bytes after the
+  //  sentinel are valid. The rest contain dummy kEmpty values that do not
+  //  represent a real slot. This is important to take into account on
+  //  find_first_non_full(), where we never try ShouldInsertBackwards() for
+  //  small tables.
+  bool is_small() const { return capacity_ < Group::kWidth - 1; }
+
+  hasher& hash_ref() { return settings_.template get<1>(); }
+  const hasher& hash_ref() const { return settings_.template get<1>(); }
+  key_equal& eq_ref() { return settings_.template get<2>(); }
+  const key_equal& eq_ref() const { return settings_.template get<2>(); }
+  allocator_type& alloc_ref() { return settings_.template get<3>(); }
+  const allocator_type& alloc_ref() const {
+    return settings_.template get<3>();
+  }
+
+  // TODO(alkis): Investigate removing some of these fields:
+  // - ctrl/slots can be derived from each other
+  // - size can be moved into the slot array
+  ctrl_t* ctrl_ = EmptyGroup();    // [(capacity + 1) * ctrl_t]
+  slot_type* slots_ = nullptr;     // [capacity * slot_type]
+  size_t size_ = 0;                // number of full slots
+  size_t capacity_ = 0;            // total number of slots
+  HashtablezInfoHandle infoz_;
+  absl::container_internal::CompressedTuple<size_t /* growth_left */, hasher,
+                                            key_equal, allocator_type>
+      settings_{0, hasher{}, key_equal{}, allocator_type{}};
+};
+
+// Erases all elements that satisfy the predicate `pred` from the container `c`.
+template <typename P, typename H, typename E, typename A, typename Predicate>
+void EraseIf(Predicate pred, raw_hash_set<P, H, E, A>* c) {
+  for (auto it = c->begin(), last = c->end(); it != last;) {
+    auto copy_it = it++;
+    if (pred(*copy_it)) {
+      c->erase(copy_it);
+    }
+  }
+}
+
+namespace hashtable_debug_internal {
+template <typename Set>
+struct HashtableDebugAccess<Set, absl::void_t<typename Set::raw_hash_set>> {
+  using Traits = typename Set::PolicyTraits;
+  using Slot = typename Traits::slot_type;
+
+  static size_t GetNumProbes(const Set& set,
+                             const typename Set::key_type& key) {
+    size_t num_probes = 0;
+    size_t hash = set.hash_ref()(key);
+    auto seq = set.probe(hash);
+    while (true) {
+      container_internal::Group g{set.ctrl_ + seq.offset()};
+      for (int i : g.Match(container_internal::H2(hash))) {
+        if (Traits::apply(
+                typename Set::template EqualElement<typename Set::key_type>{
+                    key, set.eq_ref()},
+                Traits::element(set.slots_ + seq.offset(i))))
+          return num_probes;
+        ++num_probes;
+      }
+      if (g.MatchEmpty()) return num_probes;
+      seq.next();
+      ++num_probes;
+    }
+  }
+
+  static size_t AllocatedByteSize(const Set& c) {
+    size_t capacity = c.capacity_;
+    if (capacity == 0) return 0;
+    auto layout = Set::MakeLayout(capacity);
+    size_t m = layout.AllocSize();
+
+    size_t per_slot = Traits::space_used(static_cast<const Slot*>(nullptr));
+    if (per_slot != ~size_t{}) {
+      m += per_slot * c.size();
+    } else {
+      for (size_t i = 0; i != capacity; ++i) {
+        if (container_internal::IsFull(c.ctrl_[i])) {
+          m += Traits::space_used(c.slots_ + i);
+        }
+      }
+    }
+    return m;
+  }
+
+  static size_t LowerBoundAllocatedByteSize(size_t size) {
+    size_t capacity = GrowthToLowerboundCapacity(size);
+    if (capacity == 0) return 0;
+    auto layout = Set::MakeLayout(NormalizeCapacity(capacity));
+    size_t m = layout.AllocSize();
+    size_t per_slot = Traits::space_used(static_cast<const Slot*>(nullptr));
+    if (per_slot != ~size_t{}) {
+      m += per_slot * size;
+    }
+    return m;
+  }
+};
+
+}  // namespace hashtable_debug_internal
+}  // namespace container_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_CONTAINER_INTERNAL_RAW_HASH_SET_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.cc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.cc
new file mode 100644
index 0000000..6537606
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.cc	
@@ -0,0 +1,138 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// base::AddressIsReadable() probes an address to see whether it is readable,
+// without faulting.
+
+#include "absl/debugging/internal/address_is_readable.h"
+
+#if !defined(__linux__) || defined(__ANDROID__)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// On platforms other than Linux, just return true.
+bool AddressIsReadable(const void* /* addr */) { return true; }
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else
+
+#include <fcntl.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include <atomic>
+#include <cerrno>
+#include <cstdint>
+
+#include "absl/base/internal/errno_saver.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// Pack a pid and two file descriptors into a 64-bit word,
+// using 16, 24, and 24 bits for each respectively.
+static uint64_t Pack(uint64_t pid, uint64_t read_fd, uint64_t write_fd) {
+  ABSL_RAW_CHECK((read_fd >> 24) == 0 && (write_fd >> 24) == 0,
+                 "fd out of range");
+  return (pid << 48) | ((read_fd & 0xffffff) << 24) | (write_fd & 0xffffff);
+}
+
+// Unpack x into a pid and two file descriptors, where x was created with
+// Pack().
+static void Unpack(uint64_t x, int *pid, int *read_fd, int *write_fd) {
+  *pid = x >> 48;
+  *read_fd = (x >> 24) & 0xffffff;
+  *write_fd = x & 0xffffff;
+}
+
+// Return whether the byte at *addr is readable, without faulting.
+// Save and restores errno.   Returns true on systems where
+// unimplemented.
+// This is a namespace-scoped variable for correct zero-initialization.
+static std::atomic<uint64_t> pid_and_fds;  // initially 0, an invalid pid.
+bool AddressIsReadable(const void *addr) {
+  absl::base_internal::ErrnoSaver errno_saver;
+  // We test whether a byte is readable by using write().  Normally, this would
+  // be done via a cached file descriptor to /dev/null, but linux fails to
+  // check whether the byte is readable when the destination is /dev/null, so
+  // we use a cached pipe.  We store the pid of the process that created the
+  // pipe to handle the case where a process forks, and the child closes all
+  // the file descriptors and then calls this routine.  This is not perfect:
+  // the child could use the routine, then close all file descriptors and then
+  // use this routine again.  But the likely use of this routine is when
+  // crashing, to test the validity of pages when dumping the stack.  Beware
+  // that we may leak file descriptors, but we're unlikely to leak many.
+  int bytes_written;
+  int current_pid = getpid() & 0xffff;   // we use only the low order 16 bits
+  do {  // until we do not get EBADF trying to use file descriptors
+    int pid;
+    int read_fd;
+    int write_fd;
+    uint64_t local_pid_and_fds = pid_and_fds.load(std::memory_order_relaxed);
+    Unpack(local_pid_and_fds, &pid, &read_fd, &write_fd);
+    while (current_pid != pid) {
+      int p[2];
+      // new pipe
+      if (pipe(p) != 0) {
+        ABSL_RAW_LOG(FATAL, "Failed to create pipe, errno=%d", errno);
+      }
+      fcntl(p[0], F_SETFD, FD_CLOEXEC);
+      fcntl(p[1], F_SETFD, FD_CLOEXEC);
+      uint64_t new_pid_and_fds = Pack(current_pid, p[0], p[1]);
+      if (pid_and_fds.compare_exchange_strong(
+              local_pid_and_fds, new_pid_and_fds, std::memory_order_relaxed,
+              std::memory_order_relaxed)) {
+        local_pid_and_fds = new_pid_and_fds;  // fds exposed to other threads
+      } else {  // fds not exposed to other threads; we can close them.
+        close(p[0]);
+        close(p[1]);
+        local_pid_and_fds = pid_and_fds.load(std::memory_order_relaxed);
+      }
+      Unpack(local_pid_and_fds, &pid, &read_fd, &write_fd);
+    }
+    errno = 0;
+    // Use syscall(SYS_write, ...) instead of write() to prevent ASAN
+    // and other checkers from complaining about accesses to arbitrary
+    // memory.
+    do {
+      bytes_written = syscall(SYS_write, write_fd, addr, 1);
+    } while (bytes_written == -1 && errno == EINTR);
+    if (bytes_written == 1) {   // remove the byte from the pipe
+      char c;
+      while (read(read_fd, &c, 1) == -1 && errno == EINTR) {
+      }
+    }
+    if (errno == EBADF) {  // Descriptors invalid.
+      // If pid_and_fds contains the problematic file descriptors we just used,
+      // this call will forget them, and the loop will try again.
+      pid_and_fds.compare_exchange_strong(local_pid_and_fds, 0,
+                                          std::memory_order_relaxed,
+                                          std::memory_order_relaxed);
+    }
+  } while (errno == EBADF);
+  return bytes_written == 1;
+}
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.h
new file mode 100644
index 0000000..4bbaf4d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/address_is_readable.h	
@@ -0,0 +1,32 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_
+#define ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// Return whether the byte at *addr is readable, without faulting.
+// Save and restores errno.
+bool AddressIsReadable(const void *addr);
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_ADDRESS_IS_READABLE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.cc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.cc
new file mode 100644
index 0000000..fc615c3
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.cc	
@@ -0,0 +1,1895 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// For reference check out:
+// https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
+//
+// Note that we only have partial C++11 support yet.
+
+#include "absl/debugging/internal/demangle.h"
+
+#include <cstdint>
+#include <cstdio>
+#include <limits>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+typedef struct {
+  const char *abbrev;
+  const char *real_name;
+  // Number of arguments in <expression> context, or 0 if disallowed.
+  int arity;
+} AbbrevPair;
+
+// List of operators from Itanium C++ ABI.
+static const AbbrevPair kOperatorList[] = {
+    // New has special syntax (not currently supported).
+    {"nw", "new", 0},
+    {"na", "new[]", 0},
+
+    // Works except that the 'gs' prefix is not supported.
+    {"dl", "delete", 1},
+    {"da", "delete[]", 1},
+
+    {"ps", "+", 1},  // "positive"
+    {"ng", "-", 1},  // "negative"
+    {"ad", "&", 1},  // "address-of"
+    {"de", "*", 1},  // "dereference"
+    {"co", "~", 1},
+
+    {"pl", "+", 2},
+    {"mi", "-", 2},
+    {"ml", "*", 2},
+    {"dv", "/", 2},
+    {"rm", "%", 2},
+    {"an", "&", 2},
+    {"or", "|", 2},
+    {"eo", "^", 2},
+    {"aS", "=", 2},
+    {"pL", "+=", 2},
+    {"mI", "-=", 2},
+    {"mL", "*=", 2},
+    {"dV", "/=", 2},
+    {"rM", "%=", 2},
+    {"aN", "&=", 2},
+    {"oR", "|=", 2},
+    {"eO", "^=", 2},
+    {"ls", "<<", 2},
+    {"rs", ">>", 2},
+    {"lS", "<<=", 2},
+    {"rS", ">>=", 2},
+    {"eq", "==", 2},
+    {"ne", "!=", 2},
+    {"lt", "<", 2},
+    {"gt", ">", 2},
+    {"le", "<=", 2},
+    {"ge", ">=", 2},
+    {"nt", "!", 1},
+    {"aa", "&&", 2},
+    {"oo", "||", 2},
+    {"pp", "++", 1},
+    {"mm", "--", 1},
+    {"cm", ",", 2},
+    {"pm", "->*", 2},
+    {"pt", "->", 0},  // Special syntax
+    {"cl", "()", 0},  // Special syntax
+    {"ix", "[]", 2},
+    {"qu", "?", 3},
+    {"st", "sizeof", 0},  // Special syntax
+    {"sz", "sizeof", 1},  // Not a real operator name, but used in expressions.
+    {nullptr, nullptr, 0},
+};
+
+// List of builtin types from Itanium C++ ABI.
+//
+// Invariant: only one- or two-character type abbreviations here.
+static const AbbrevPair kBuiltinTypeList[] = {
+    {"v", "void", 0},
+    {"w", "wchar_t", 0},
+    {"b", "bool", 0},
+    {"c", "char", 0},
+    {"a", "signed char", 0},
+    {"h", "unsigned char", 0},
+    {"s", "short", 0},
+    {"t", "unsigned short", 0},
+    {"i", "int", 0},
+    {"j", "unsigned int", 0},
+    {"l", "long", 0},
+    {"m", "unsigned long", 0},
+    {"x", "long long", 0},
+    {"y", "unsigned long long", 0},
+    {"n", "__int128", 0},
+    {"o", "unsigned __int128", 0},
+    {"f", "float", 0},
+    {"d", "double", 0},
+    {"e", "long double", 0},
+    {"g", "__float128", 0},
+    {"z", "ellipsis", 0},
+
+    {"De", "decimal128", 0},      // IEEE 754r decimal floating point (128 bits)
+    {"Dd", "decimal64", 0},       // IEEE 754r decimal floating point (64 bits)
+    {"Dc", "decltype(auto)", 0},
+    {"Da", "auto", 0},
+    {"Dn", "std::nullptr_t", 0},  // i.e., decltype(nullptr)
+    {"Df", "decimal32", 0},       // IEEE 754r decimal floating point (32 bits)
+    {"Di", "char32_t", 0},
+    {"Ds", "char16_t", 0},
+    {"Dh", "float16", 0},         // IEEE 754r half-precision float (16 bits)
+    {nullptr, nullptr, 0},
+};
+
+// List of substitutions Itanium C++ ABI.
+static const AbbrevPair kSubstitutionList[] = {
+    {"St", "", 0},
+    {"Sa", "allocator", 0},
+    {"Sb", "basic_string", 0},
+    // std::basic_string<char, std::char_traits<char>,std::allocator<char> >
+    {"Ss", "string", 0},
+    // std::basic_istream<char, std::char_traits<char> >
+    {"Si", "istream", 0},
+    // std::basic_ostream<char, std::char_traits<char> >
+    {"So", "ostream", 0},
+    // std::basic_iostream<char, std::char_traits<char> >
+    {"Sd", "iostream", 0},
+    {nullptr, nullptr, 0},
+};
+
+// State needed for demangling.  This struct is copied in almost every stack
+// frame, so every byte counts.
+typedef struct {
+  int mangled_idx;                   // Cursor of mangled name.
+  int out_cur_idx;                   // Cursor of output std::string.
+  int prev_name_idx;                 // For constructors/destructors.
+  signed int prev_name_length : 16;  // For constructors/destructors.
+  signed int nest_level : 15;        // For nested names.
+  unsigned int append : 1;           // Append flag.
+  // Note: for some reason MSVC can't pack "bool append : 1" into the same int
+  // with the above two fields, so we use an int instead.  Amusingly it can pack
+  // "signed bool" as expected, but relying on that to continue to be a legal
+  // type seems ill-advised (as it's illegal in at least clang).
+} ParseState;
+
+static_assert(sizeof(ParseState) == 4 * sizeof(int),
+              "unexpected size of ParseState");
+
+// One-off state for demangling that's not subject to backtracking -- either
+// constant data, data that's intentionally immune to backtracking (steps), or
+// data that would never be changed by backtracking anyway (recursion_depth).
+//
+// Only one copy of this exists for each call to Demangle, so the size of this
+// struct is nearly inconsequential.
+typedef struct {
+  const char *mangled_begin;  // Beginning of input std::string.
+  char *out;                  // Beginning of output std::string.
+  int out_end_idx;            // One past last allowed output character.
+  int recursion_depth;        // For stack exhaustion prevention.
+  int steps;               // Cap how much work we'll do, regardless of depth.
+  ParseState parse_state;  // Backtrackable state copied for most frames.
+} State;
+
+namespace {
+// Prevent deep recursion / stack exhaustion.
+// Also prevent unbounded handling of complex inputs.
+class ComplexityGuard {
+ public:
+  explicit ComplexityGuard(State *state) : state_(state) {
+    ++state->recursion_depth;
+    ++state->steps;
+  }
+  ~ComplexityGuard() { --state_->recursion_depth; }
+
+  // 256 levels of recursion seems like a reasonable upper limit on depth.
+  // 128 is not enough to demagle synthetic tests from demangle_unittest.txt:
+  // "_ZaaZZZZ..." and "_ZaaZcvZcvZ..."
+  static constexpr int kRecursionDepthLimit = 256;
+
+  // We're trying to pick a charitable upper-limit on how many parse steps are
+  // necessary to handle something that a human could actually make use of.
+  // This is mostly in place as a bound on how much work we'll do if we are
+  // asked to demangle an mangled name from an untrusted source, so it should be
+  // much larger than the largest expected symbol, but much smaller than the
+  // amount of work we can do in, e.g., a second.
+  //
+  // Some real-world symbols from an arbitrary binary started failing between
+  // 2^12 and 2^13, so we multiply the latter by an extra factor of 16 to set
+  // the limit.
+  //
+  // Spending one second on 2^17 parse steps would require each step to take
+  // 7.6us, or ~30000 clock cycles, so it's safe to say this can be done in
+  // under a second.
+  static constexpr int kParseStepsLimit = 1 << 17;
+
+  bool IsTooComplex() const {
+    return state_->recursion_depth > kRecursionDepthLimit ||
+           state_->steps > kParseStepsLimit;
+  }
+
+ private:
+  State *state_;
+};
+}  // namespace
+
+// We don't use strlen() in libc since it's not guaranteed to be async
+// signal safe.
+static size_t StrLen(const char *str) {
+  size_t len = 0;
+  while (*str != '\0') {
+    ++str;
+    ++len;
+  }
+  return len;
+}
+
+// Returns true if "str" has at least "n" characters remaining.
+static bool AtLeastNumCharsRemaining(const char *str, int n) {
+  for (int i = 0; i < n; ++i) {
+    if (str[i] == '\0') {
+      return false;
+    }
+  }
+  return true;
+}
+
+// Returns true if "str" has "prefix" as a prefix.
+static bool StrPrefix(const char *str, const char *prefix) {
+  size_t i = 0;
+  while (str[i] != '\0' && prefix[i] != '\0' && str[i] == prefix[i]) {
+    ++i;
+  }
+  return prefix[i] == '\0';  // Consumed everything in "prefix".
+}
+
+static void InitState(State *state, const char *mangled, char *out,
+                      int out_size) {
+  state->mangled_begin = mangled;
+  state->out = out;
+  state->out_end_idx = out_size;
+  state->recursion_depth = 0;
+  state->steps = 0;
+
+  state->parse_state.mangled_idx = 0;
+  state->parse_state.out_cur_idx = 0;
+  state->parse_state.prev_name_idx = 0;
+  state->parse_state.prev_name_length = -1;
+  state->parse_state.nest_level = -1;
+  state->parse_state.append = true;
+}
+
+static inline const char *RemainingInput(State *state) {
+  return &state->mangled_begin[state->parse_state.mangled_idx];
+}
+
+// Returns true and advances "mangled_idx" if we find "one_char_token"
+// at "mangled_idx" position.  It is assumed that "one_char_token" does
+// not contain '\0'.
+static bool ParseOneCharToken(State *state, const char one_char_token) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (RemainingInput(state)[0] == one_char_token) {
+    ++state->parse_state.mangled_idx;
+    return true;
+  }
+  return false;
+}
+
+// Returns true and advances "mangled_cur" if we find "two_char_token"
+// at "mangled_cur" position.  It is assumed that "two_char_token" does
+// not contain '\0'.
+static bool ParseTwoCharToken(State *state, const char *two_char_token) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (RemainingInput(state)[0] == two_char_token[0] &&
+      RemainingInput(state)[1] == two_char_token[1]) {
+    state->parse_state.mangled_idx += 2;
+    return true;
+  }
+  return false;
+}
+
+// Returns true and advances "mangled_cur" if we find any character in
+// "char_class" at "mangled_cur" position.
+static bool ParseCharClass(State *state, const char *char_class) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (RemainingInput(state)[0] == '\0') {
+    return false;
+  }
+  const char *p = char_class;
+  for (; *p != '\0'; ++p) {
+    if (RemainingInput(state)[0] == *p) {
+      ++state->parse_state.mangled_idx;
+      return true;
+    }
+  }
+  return false;
+}
+
+static bool ParseDigit(State *state, int *digit) {
+  char c = RemainingInput(state)[0];
+  if (ParseCharClass(state, "0123456789")) {
+    if (digit != nullptr) {
+      *digit = c - '0';
+    }
+    return true;
+  }
+  return false;
+}
+
+// This function is used for handling an optional non-terminal.
+static bool Optional(bool /*status*/) { return true; }
+
+// This function is used for handling <non-terminal>+ syntax.
+typedef bool (*ParseFunc)(State *);
+static bool OneOrMore(ParseFunc parse_func, State *state) {
+  if (parse_func(state)) {
+    while (parse_func(state)) {
+    }
+    return true;
+  }
+  return false;
+}
+
+// This function is used for handling <non-terminal>* syntax. The function
+// always returns true and must be followed by a termination token or a
+// terminating sequence not handled by parse_func (e.g.
+// ParseOneCharToken(state, 'E')).
+static bool ZeroOrMore(ParseFunc parse_func, State *state) {
+  while (parse_func(state)) {
+  }
+  return true;
+}
+
+// Append "str" at "out_cur_idx".  If there is an overflow, out_cur_idx is
+// set to out_end_idx+1.  The output string is ensured to
+// always terminate with '\0' as long as there is no overflow.
+static void Append(State *state, const char *const str, const int length) {
+  for (int i = 0; i < length; ++i) {
+    if (state->parse_state.out_cur_idx + 1 <
+        state->out_end_idx) {  // +1 for '\0'
+      state->out[state->parse_state.out_cur_idx++] = str[i];
+    } else {
+      // signal overflow
+      state->parse_state.out_cur_idx = state->out_end_idx + 1;
+      break;
+    }
+  }
+  if (state->parse_state.out_cur_idx < state->out_end_idx) {
+    state->out[state->parse_state.out_cur_idx] =
+        '\0';  // Terminate it with '\0'
+  }
+}
+
+// We don't use equivalents in libc to avoid locale issues.
+static bool IsLower(char c) { return c >= 'a' && c <= 'z'; }
+
+static bool IsAlpha(char c) {
+  return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+}
+
+static bool IsDigit(char c) { return c >= '0' && c <= '9'; }
+
+// Returns true if "str" is a function clone suffix.  These suffixes are used
+// by GCC 4.5.x and later versions (and our locally-modified version of GCC
+// 4.4.x) to indicate functions which have been cloned during optimization.
+// We treat any sequence (.<alpha>+.<digit>+)+ as a function clone suffix.
+static bool IsFunctionCloneSuffix(const char *str) {
+  size_t i = 0;
+  while (str[i] != '\0') {
+    // Consume a single .<alpha>+.<digit>+ sequence.
+    if (str[i] != '.' || !IsAlpha(str[i + 1])) {
+      return false;
+    }
+    i += 2;
+    while (IsAlpha(str[i])) {
+      ++i;
+    }
+    if (str[i] != '.' || !IsDigit(str[i + 1])) {
+      return false;
+    }
+    i += 2;
+    while (IsDigit(str[i])) {
+      ++i;
+    }
+  }
+  return true;  // Consumed everything in "str".
+}
+
+static bool EndsWith(State *state, const char chr) {
+  return state->parse_state.out_cur_idx > 0 &&
+         chr == state->out[state->parse_state.out_cur_idx - 1];
+}
+
+// Append "str" with some tweaks, iff "append" state is true.
+static void MaybeAppendWithLength(State *state, const char *const str,
+                                  const int length) {
+  if (state->parse_state.append && length > 0) {
+    // Append a space if the output buffer ends with '<' and "str"
+    // starts with '<' to avoid <<<.
+    if (str[0] == '<' && EndsWith(state, '<')) {
+      Append(state, " ", 1);
+    }
+    // Remember the last identifier name for ctors/dtors.
+    if (IsAlpha(str[0]) || str[0] == '_') {
+      state->parse_state.prev_name_idx = state->parse_state.out_cur_idx;
+      state->parse_state.prev_name_length = length;
+    }
+    Append(state, str, length);
+  }
+}
+
+// Appends a positive decimal number to the output if appending is enabled.
+static bool MaybeAppendDecimal(State *state, unsigned int val) {
+  // Max {32-64}-bit unsigned int is 20 digits.
+  constexpr size_t kMaxLength = 20;
+  char buf[kMaxLength];
+
+  // We can't use itoa or sprintf as neither is specified to be
+  // async-signal-safe.
+  if (state->parse_state.append) {
+    // We can't have a one-before-the-beginning pointer, so instead start with
+    // one-past-the-end and manipulate one character before the pointer.
+    char *p = &buf[kMaxLength];
+    do {  // val=0 is the only input that should write a leading zero digit.
+      *--p = (val % 10) + '0';
+      val /= 10;
+    } while (p > buf && val != 0);
+
+    // 'p' landed on the last character we set.  How convenient.
+    Append(state, p, kMaxLength - (p - buf));
+  }
+
+  return true;
+}
+
+// A convenient wrapper around MaybeAppendWithLength().
+// Returns true so that it can be placed in "if" conditions.
+static bool MaybeAppend(State *state, const char *const str) {
+  if (state->parse_state.append) {
+    int length = StrLen(str);
+    MaybeAppendWithLength(state, str, length);
+  }
+  return true;
+}
+
+// This function is used for handling nested names.
+static bool EnterNestedName(State *state) {
+  state->parse_state.nest_level = 0;
+  return true;
+}
+
+// This function is used for handling nested names.
+static bool LeaveNestedName(State *state, int16_t prev_value) {
+  state->parse_state.nest_level = prev_value;
+  return true;
+}
+
+// Disable the append mode not to print function parameters, etc.
+static bool DisableAppend(State *state) {
+  state->parse_state.append = false;
+  return true;
+}
+
+// Restore the append mode to the previous state.
+static bool RestoreAppend(State *state, bool prev_value) {
+  state->parse_state.append = prev_value;
+  return true;
+}
+
+// Increase the nest level for nested names.
+static void MaybeIncreaseNestLevel(State *state) {
+  if (state->parse_state.nest_level > -1) {
+    ++state->parse_state.nest_level;
+  }
+}
+
+// Appends :: for nested names if necessary.
+static void MaybeAppendSeparator(State *state) {
+  if (state->parse_state.nest_level >= 1) {
+    MaybeAppend(state, "::");
+  }
+}
+
+// Cancel the last separator if necessary.
+static void MaybeCancelLastSeparator(State *state) {
+  if (state->parse_state.nest_level >= 1 && state->parse_state.append &&
+      state->parse_state.out_cur_idx >= 2) {
+    state->parse_state.out_cur_idx -= 2;
+    state->out[state->parse_state.out_cur_idx] = '\0';
+  }
+}
+
+// Returns true if the identifier of the given length pointed to by
+// "mangled_cur" is anonymous namespace.
+static bool IdentifierIsAnonymousNamespace(State *state, int length) {
+  // Returns true if "anon_prefix" is a proper prefix of "mangled_cur".
+  static const char anon_prefix[] = "_GLOBAL__N_";
+  return (length > static_cast<int>(sizeof(anon_prefix) - 1) &&
+          StrPrefix(RemainingInput(state), anon_prefix));
+}
+
+// Forward declarations of our parsing functions.
+static bool ParseMangledName(State *state);
+static bool ParseEncoding(State *state);
+static bool ParseName(State *state);
+static bool ParseUnscopedName(State *state);
+static bool ParseNestedName(State *state);
+static bool ParsePrefix(State *state);
+static bool ParseUnqualifiedName(State *state);
+static bool ParseSourceName(State *state);
+static bool ParseLocalSourceName(State *state);
+static bool ParseUnnamedTypeName(State *state);
+static bool ParseNumber(State *state, int *number_out);
+static bool ParseFloatNumber(State *state);
+static bool ParseSeqId(State *state);
+static bool ParseIdentifier(State *state, int length);
+static bool ParseOperatorName(State *state, int *arity);
+static bool ParseSpecialName(State *state);
+static bool ParseCallOffset(State *state);
+static bool ParseNVOffset(State *state);
+static bool ParseVOffset(State *state);
+static bool ParseCtorDtorName(State *state);
+static bool ParseDecltype(State *state);
+static bool ParseType(State *state);
+static bool ParseCVQualifiers(State *state);
+static bool ParseBuiltinType(State *state);
+static bool ParseFunctionType(State *state);
+static bool ParseBareFunctionType(State *state);
+static bool ParseClassEnumType(State *state);
+static bool ParseArrayType(State *state);
+static bool ParsePointerToMemberType(State *state);
+static bool ParseTemplateParam(State *state);
+static bool ParseTemplateTemplateParam(State *state);
+static bool ParseTemplateArgs(State *state);
+static bool ParseTemplateArg(State *state);
+static bool ParseBaseUnresolvedName(State *state);
+static bool ParseUnresolvedName(State *state);
+static bool ParseExpression(State *state);
+static bool ParseExprPrimary(State *state);
+static bool ParseExprCastValue(State *state);
+static bool ParseLocalName(State *state);
+static bool ParseLocalNameSuffix(State *state);
+static bool ParseDiscriminator(State *state);
+static bool ParseSubstitution(State *state, bool accept_std);
+
+// Implementation note: the following code is a straightforward
+// translation of the Itanium C++ ABI defined in BNF with a couple of
+// exceptions.
+//
+// - Support GNU extensions not defined in the Itanium C++ ABI
+// - <prefix> and <template-prefix> are combined to avoid infinite loop
+// - Reorder patterns to shorten the code
+// - Reorder patterns to give greedier functions precedence
+//   We'll mark "Less greedy than" for these cases in the code
+//
+// Each parsing function changes the parse state and returns true on
+// success, or returns false and doesn't change the parse state (note:
+// the parse-steps counter increases regardless of success or failure).
+// To ensure that the parse state isn't changed in the latter case, we
+// save the original state before we call multiple parsing functions
+// consecutively with &&, and restore it if unsuccessful.  See
+// ParseEncoding() as an example of this convention.  We follow the
+// convention throughout the code.
+//
+// Originally we tried to do demangling without following the full ABI
+// syntax but it turned out we needed to follow the full syntax to
+// parse complicated cases like nested template arguments.  Note that
+// implementing a full-fledged demangler isn't trivial (libiberty's
+// cp-demangle.c has +4300 lines).
+//
+// Note that (foo) in <(foo) ...> is a modifier to be ignored.
+//
+// Reference:
+// - Itanium C++ ABI
+//   <https://mentorembedded.github.io/cxx-abi/abi.html#mangling>
+
+// <mangled-name> ::= _Z <encoding>
+static bool ParseMangledName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  return ParseTwoCharToken(state, "_Z") && ParseEncoding(state);
+}
+
+// <encoding> ::= <(function) name> <bare-function-type>
+//            ::= <(data) name>
+//            ::= <special-name>
+static bool ParseEncoding(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  // Implementing the first two productions together as <name>
+  // [<bare-function-type>] avoids exponential blowup of backtracking.
+  //
+  // Since Optional(...) can't fail, there's no need to copy the state for
+  // backtracking.
+  if (ParseName(state) && Optional(ParseBareFunctionType(state))) {
+    return true;
+  }
+
+  if (ParseSpecialName(state)) {
+    return true;
+  }
+  return false;
+}
+
+// <name> ::= <nested-name>
+//        ::= <unscoped-template-name> <template-args>
+//        ::= <unscoped-name>
+//        ::= <local-name>
+static bool ParseName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseNestedName(state) || ParseLocalName(state)) {
+    return true;
+  }
+
+  // We reorganize the productions to avoid re-parsing unscoped names.
+  // - Inline <unscoped-template-name> productions:
+  //   <name> ::= <substitution> <template-args>
+  //          ::= <unscoped-name> <template-args>
+  //          ::= <unscoped-name>
+  // - Merge the two productions that start with unscoped-name:
+  //   <name> ::= <unscoped-name> [<template-args>]
+
+  ParseState copy = state->parse_state;
+  // "std<...>" isn't a valid name.
+  if (ParseSubstitution(state, /*accept_std=*/false) &&
+      ParseTemplateArgs(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Note there's no need to restore state after this since only the first
+  // subparser can fail.
+  return ParseUnscopedName(state) && Optional(ParseTemplateArgs(state));
+}
+
+// <unscoped-name> ::= <unqualified-name>
+//                 ::= St <unqualified-name>
+static bool ParseUnscopedName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseUnqualifiedName(state)) {
+    return true;
+  }
+
+  ParseState copy = state->parse_state;
+  if (ParseTwoCharToken(state, "St") && MaybeAppend(state, "std::") &&
+      ParseUnqualifiedName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <ref-qualifer> ::= R // lvalue method reference qualifier
+//                ::= O // rvalue method reference qualifier
+static inline bool ParseRefQualifier(State *state) {
+  return ParseCharClass(state, "OR");
+}
+
+// <nested-name> ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix>
+//                   <unqualified-name> E
+//               ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix>
+//                   <template-args> E
+static bool ParseNestedName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'N') && EnterNestedName(state) &&
+      Optional(ParseCVQualifiers(state)) &&
+      Optional(ParseRefQualifier(state)) && ParsePrefix(state) &&
+      LeaveNestedName(state, copy.nest_level) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// This part is tricky.  If we literally translate them to code, we'll
+// end up infinite loop.  Hence we merge them to avoid the case.
+//
+// <prefix> ::= <prefix> <unqualified-name>
+//          ::= <template-prefix> <template-args>
+//          ::= <template-param>
+//          ::= <substitution>
+//          ::= # empty
+// <template-prefix> ::= <prefix> <(template) unqualified-name>
+//                   ::= <template-param>
+//                   ::= <substitution>
+static bool ParsePrefix(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  bool has_something = false;
+  while (true) {
+    MaybeAppendSeparator(state);
+    if (ParseTemplateParam(state) ||
+        ParseSubstitution(state, /*accept_std=*/true) ||
+        ParseUnscopedName(state) ||
+        (ParseOneCharToken(state, 'M') && ParseUnnamedTypeName(state))) {
+      has_something = true;
+      MaybeIncreaseNestLevel(state);
+      continue;
+    }
+    MaybeCancelLastSeparator(state);
+    if (has_something && ParseTemplateArgs(state)) {
+      return ParsePrefix(state);
+    } else {
+      break;
+    }
+  }
+  return true;
+}
+
+// <unqualified-name> ::= <operator-name>
+//                    ::= <ctor-dtor-name>
+//                    ::= <source-name>
+//                    ::= <local-source-name> // GCC extension; see below.
+//                    ::= <unnamed-type-name>
+static bool ParseUnqualifiedName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  return (ParseOperatorName(state, nullptr) || ParseCtorDtorName(state) ||
+          ParseSourceName(state) || ParseLocalSourceName(state) ||
+          ParseUnnamedTypeName(state));
+}
+
+// <source-name> ::= <positive length number> <identifier>
+static bool ParseSourceName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  int length = -1;
+  if (ParseNumber(state, &length) && ParseIdentifier(state, length)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <local-source-name> ::= L <source-name> [<discriminator>]
+//
+// References:
+//   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31775
+//   https://gcc.gnu.org/viewcvs?view=rev&revision=124467
+static bool ParseLocalSourceName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'L') && ParseSourceName(state) &&
+      Optional(ParseDiscriminator(state))) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <unnamed-type-name> ::= Ut [<(nonnegative) number>] _
+//                     ::= <closure-type-name>
+// <closure-type-name> ::= Ul <lambda-sig> E [<(nonnegative) number>] _
+// <lambda-sig>        ::= <(parameter) type>+
+static bool ParseUnnamedTypeName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  // Type's 1-based index n is encoded as { "", n == 1; itoa(n-2), otherwise }.
+  // Optionally parse the encoded value into 'which' and add 2 to get the index.
+  int which = -1;
+
+  // Unnamed type local to function or class.
+  if (ParseTwoCharToken(state, "Ut") && Optional(ParseNumber(state, &which)) &&
+      which <= std::numeric_limits<int>::max() - 2 &&  // Don't overflow.
+      ParseOneCharToken(state, '_')) {
+    MaybeAppend(state, "{unnamed type#");
+    MaybeAppendDecimal(state, 2 + which);
+    MaybeAppend(state, "}");
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Closure type.
+  which = -1;
+  if (ParseTwoCharToken(state, "Ul") && DisableAppend(state) &&
+      OneOrMore(ParseType, state) && RestoreAppend(state, copy.append) &&
+      ParseOneCharToken(state, 'E') && Optional(ParseNumber(state, &which)) &&
+      which <= std::numeric_limits<int>::max() - 2 &&  // Don't overflow.
+      ParseOneCharToken(state, '_')) {
+    MaybeAppend(state, "{lambda()#");
+    MaybeAppendDecimal(state, 2 + which);
+    MaybeAppend(state, "}");
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <number> ::= [n] <non-negative decimal integer>
+// If "number_out" is non-null, then *number_out is set to the value of the
+// parsed number on success.
+static bool ParseNumber(State *state, int *number_out) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  bool negative = false;
+  if (ParseOneCharToken(state, 'n')) {
+    negative = true;
+  }
+  const char *p = RemainingInput(state);
+  uint64_t number = 0;
+  for (; *p != '\0'; ++p) {
+    if (IsDigit(*p)) {
+      number = number * 10 + (*p - '0');
+    } else {
+      break;
+    }
+  }
+  // Apply the sign with uint64_t arithmetic so overflows aren't UB.  Gives
+  // "incorrect" results for out-of-range inputs, but negative values only
+  // appear for literals, which aren't printed.
+  if (negative) {
+    number = ~number + 1;
+  }
+  if (p != RemainingInput(state)) {  // Conversion succeeded.
+    state->parse_state.mangled_idx += p - RemainingInput(state);
+    if (number_out != nullptr) {
+      // Note: possibly truncate "number".
+      *number_out = number;
+    }
+    return true;
+  }
+  return false;
+}
+
+// Floating-point literals are encoded using a fixed-length lowercase
+// hexadecimal string.
+static bool ParseFloatNumber(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  const char *p = RemainingInput(state);
+  for (; *p != '\0'; ++p) {
+    if (!IsDigit(*p) && !(*p >= 'a' && *p <= 'f')) {
+      break;
+    }
+  }
+  if (p != RemainingInput(state)) {  // Conversion succeeded.
+    state->parse_state.mangled_idx += p - RemainingInput(state);
+    return true;
+  }
+  return false;
+}
+
+// The <seq-id> is a sequence number in base 36,
+// using digits and upper case letters
+static bool ParseSeqId(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  const char *p = RemainingInput(state);
+  for (; *p != '\0'; ++p) {
+    if (!IsDigit(*p) && !(*p >= 'A' && *p <= 'Z')) {
+      break;
+    }
+  }
+  if (p != RemainingInput(state)) {  // Conversion succeeded.
+    state->parse_state.mangled_idx += p - RemainingInput(state);
+    return true;
+  }
+  return false;
+}
+
+// <identifier> ::= <unqualified source code identifier> (of given length)
+static bool ParseIdentifier(State *state, int length) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (length < 0 || !AtLeastNumCharsRemaining(RemainingInput(state), length)) {
+    return false;
+  }
+  if (IdentifierIsAnonymousNamespace(state, length)) {
+    MaybeAppend(state, "(anonymous namespace)");
+  } else {
+    MaybeAppendWithLength(state, RemainingInput(state), length);
+  }
+  state->parse_state.mangled_idx += length;
+  return true;
+}
+
+// <operator-name> ::= nw, and other two letters cases
+//                 ::= cv <type>  # (cast)
+//                 ::= v  <digit> <source-name> # vendor extended operator
+static bool ParseOperatorName(State *state, int *arity) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (!AtLeastNumCharsRemaining(RemainingInput(state), 2)) {
+    return false;
+  }
+  // First check with "cv" (cast) case.
+  ParseState copy = state->parse_state;
+  if (ParseTwoCharToken(state, "cv") && MaybeAppend(state, "operator ") &&
+      EnterNestedName(state) && ParseType(state) &&
+      LeaveNestedName(state, copy.nest_level)) {
+    if (arity != nullptr) {
+      *arity = 1;
+    }
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Then vendor extended operators.
+  if (ParseOneCharToken(state, 'v') && ParseDigit(state, arity) &&
+      ParseSourceName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Other operator names should start with a lower alphabet followed
+  // by a lower/upper alphabet.
+  if (!(IsLower(RemainingInput(state)[0]) &&
+        IsAlpha(RemainingInput(state)[1]))) {
+    return false;
+  }
+  // We may want to perform a binary search if we really need speed.
+  const AbbrevPair *p;
+  for (p = kOperatorList; p->abbrev != nullptr; ++p) {
+    if (RemainingInput(state)[0] == p->abbrev[0] &&
+        RemainingInput(state)[1] == p->abbrev[1]) {
+      if (arity != nullptr) {
+        *arity = p->arity;
+      }
+      MaybeAppend(state, "operator");
+      if (IsLower(*p->real_name)) {  // new, delete, etc.
+        MaybeAppend(state, " ");
+      }
+      MaybeAppend(state, p->real_name);
+      state->parse_state.mangled_idx += 2;
+      return true;
+    }
+  }
+  return false;
+}
+
+// <special-name> ::= TV <type>
+//                ::= TT <type>
+//                ::= TI <type>
+//                ::= TS <type>
+//                ::= Tc <call-offset> <call-offset> <(base) encoding>
+//                ::= GV <(object) name>
+//                ::= T <call-offset> <(base) encoding>
+// G++ extensions:
+//                ::= TC <type> <(offset) number> _ <(base) type>
+//                ::= TF <type>
+//                ::= TJ <type>
+//                ::= GR <name>
+//                ::= GA <encoding>
+//                ::= Th <call-offset> <(base) encoding>
+//                ::= Tv <call-offset> <(base) encoding>
+//
+// Note: we don't care much about them since they don't appear in
+// stack traces.  The are special data.
+static bool ParseSpecialName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'T') && ParseCharClass(state, "VTIS") &&
+      ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "Tc") && ParseCallOffset(state) &&
+      ParseCallOffset(state) && ParseEncoding(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "GV") && ParseName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'T') && ParseCallOffset(state) &&
+      ParseEncoding(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // G++ extensions
+  if (ParseTwoCharToken(state, "TC") && ParseType(state) &&
+      ParseNumber(state, nullptr) && ParseOneCharToken(state, '_') &&
+      DisableAppend(state) && ParseType(state)) {
+    RestoreAppend(state, copy.append);
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'T') && ParseCharClass(state, "FJ") &&
+      ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "GR") && ParseName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "GA") && ParseEncoding(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'T') && ParseCharClass(state, "hv") &&
+      ParseCallOffset(state) && ParseEncoding(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <call-offset> ::= h <nv-offset> _
+//               ::= v <v-offset> _
+static bool ParseCallOffset(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'h') && ParseNVOffset(state) &&
+      ParseOneCharToken(state, '_')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'v') && ParseVOffset(state) &&
+      ParseOneCharToken(state, '_')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <nv-offset> ::= <(offset) number>
+static bool ParseNVOffset(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  return ParseNumber(state, nullptr);
+}
+
+// <v-offset>  ::= <(offset) number> _ <(virtual offset) number>
+static bool ParseVOffset(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseNumber(state, nullptr) && ParseOneCharToken(state, '_') &&
+      ParseNumber(state, nullptr)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <ctor-dtor-name> ::= C1 | C2 | C3
+//                  ::= D0 | D1 | D2
+// # GCC extensions: "unified" constructor/destructor.  See
+// # https://github.com/gcc-mirror/gcc/blob/7ad17b583c3643bd4557f29b8391ca7ef08391f5/gcc/cp/mangle.c#L1847
+//                  ::= C4 | D4
+static bool ParseCtorDtorName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'C') && ParseCharClass(state, "1234")) {
+    const char *const prev_name = state->out + state->parse_state.prev_name_idx;
+    MaybeAppendWithLength(state, prev_name,
+                          state->parse_state.prev_name_length);
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'D') && ParseCharClass(state, "0124")) {
+    const char *const prev_name = state->out + state->parse_state.prev_name_idx;
+    MaybeAppend(state, "~");
+    MaybeAppendWithLength(state, prev_name,
+                          state->parse_state.prev_name_length);
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <decltype> ::= Dt <expression> E  # decltype of an id-expression or class
+//                                   # member access (C++0x)
+//            ::= DT <expression> E  # decltype of an expression (C++0x)
+static bool ParseDecltype(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'D') && ParseCharClass(state, "tT") &&
+      ParseExpression(state) && ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <type> ::= <CV-qualifiers> <type>
+//        ::= P <type>   # pointer-to
+//        ::= R <type>   # reference-to
+//        ::= O <type>   # rvalue reference-to (C++0x)
+//        ::= C <type>   # complex pair (C 2000)
+//        ::= G <type>   # imaginary (C 2000)
+//        ::= U <source-name> <type>  # vendor extended type qualifier
+//        ::= <builtin-type>
+//        ::= <function-type>
+//        ::= <class-enum-type>  # note: just an alias for <name>
+//        ::= <array-type>
+//        ::= <pointer-to-member-type>
+//        ::= <template-template-param> <template-args>
+//        ::= <template-param>
+//        ::= <decltype>
+//        ::= <substitution>
+//        ::= Dp <type>          # pack expansion of (C++0x)
+//
+static bool ParseType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+
+  // We should check CV-qualifers, and PRGC things first.
+  //
+  // CV-qualifiers overlap with some operator names, but an operator name is not
+  // valid as a type.  To avoid an ambiguity that can lead to exponential time
+  // complexity, refuse to backtrack the CV-qualifiers.
+  //
+  // _Z4aoeuIrMvvE
+  //  => _Z 4aoeuI        rM  v     v   E
+  //         aoeu<operator%=, void, void>
+  //  => _Z 4aoeuI r Mv v              E
+  //         aoeu<void void::* restrict>
+  //
+  // By consuming the CV-qualifiers first, the former parse is disabled.
+  if (ParseCVQualifiers(state)) {
+    const bool result = ParseType(state);
+    if (!result) state->parse_state = copy;
+    return result;
+  }
+  state->parse_state = copy;
+
+  // Similarly, these tag characters can overlap with other <name>s resulting in
+  // two different parse prefixes that land on <template-args> in the same
+  // place, such as "C3r1xI...".  So, disable the "ctor-name = C3" parse by
+  // refusing to backtrack the tag characters.
+  if (ParseCharClass(state, "OPRCG")) {
+    const bool result = ParseType(state);
+    if (!result) state->parse_state = copy;
+    return result;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "Dp") && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'U') && ParseSourceName(state) &&
+      ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseBuiltinType(state) || ParseFunctionType(state) ||
+      ParseClassEnumType(state) || ParseArrayType(state) ||
+      ParsePointerToMemberType(state) || ParseDecltype(state) ||
+      // "std" on its own isn't a type.
+      ParseSubstitution(state, /*accept_std=*/false)) {
+    return true;
+  }
+
+  if (ParseTemplateTemplateParam(state) && ParseTemplateArgs(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Less greedy than <template-template-param> <template-args>.
+  if (ParseTemplateParam(state)) {
+    return true;
+  }
+
+  return false;
+}
+
+// <CV-qualifiers> ::= [r] [V] [K]
+// We don't allow empty <CV-qualifiers> to avoid infinite loop in
+// ParseType().
+static bool ParseCVQualifiers(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  int num_cv_qualifiers = 0;
+  num_cv_qualifiers += ParseOneCharToken(state, 'r');
+  num_cv_qualifiers += ParseOneCharToken(state, 'V');
+  num_cv_qualifiers += ParseOneCharToken(state, 'K');
+  return num_cv_qualifiers > 0;
+}
+
+// <builtin-type> ::= v, etc.  # single-character builtin types
+//                ::= u <source-name>
+//                ::= Dd, etc.  # two-character builtin types
+//
+// Not supported:
+//                ::= DF <number> _ # _FloatN (N bits)
+//
+static bool ParseBuiltinType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  const AbbrevPair *p;
+  for (p = kBuiltinTypeList; p->abbrev != nullptr; ++p) {
+    // Guaranteed only 1- or 2-character strings in kBuiltinTypeList.
+    if (p->abbrev[1] == '\0') {
+      if (ParseOneCharToken(state, p->abbrev[0])) {
+        MaybeAppend(state, p->real_name);
+        return true;
+      }
+    } else if (p->abbrev[2] == '\0' && ParseTwoCharToken(state, p->abbrev)) {
+      MaybeAppend(state, p->real_name);
+      return true;
+    }
+  }
+
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'u') && ParseSourceName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <function-type> ::= F [Y] <bare-function-type> E
+static bool ParseFunctionType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'F') &&
+      Optional(ParseOneCharToken(state, 'Y')) && ParseBareFunctionType(state) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <bare-function-type> ::= <(signature) type>+
+static bool ParseBareFunctionType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  DisableAppend(state);
+  if (OneOrMore(ParseType, state)) {
+    RestoreAppend(state, copy.append);
+    MaybeAppend(state, "()");
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <class-enum-type> ::= <name>
+static bool ParseClassEnumType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  return ParseName(state);
+}
+
+// <array-type> ::= A <(positive dimension) number> _ <(element) type>
+//              ::= A [<(dimension) expression>] _ <(element) type>
+static bool ParseArrayType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'A') && ParseNumber(state, nullptr) &&
+      ParseOneCharToken(state, '_') && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'A') && Optional(ParseExpression(state)) &&
+      ParseOneCharToken(state, '_') && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <pointer-to-member-type> ::= M <(class) type> <(member) type>
+static bool ParsePointerToMemberType(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'M') && ParseType(state) && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <template-param> ::= T_
+//                  ::= T <parameter-2 non-negative number> _
+static bool ParseTemplateParam(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseTwoCharToken(state, "T_")) {
+    MaybeAppend(state, "?");  // We don't support template substitutions.
+    return true;
+  }
+
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'T') && ParseNumber(state, nullptr) &&
+      ParseOneCharToken(state, '_')) {
+    MaybeAppend(state, "?");  // We don't support template substitutions.
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <template-template-param> ::= <template-param>
+//                           ::= <substitution>
+static bool ParseTemplateTemplateParam(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  return (ParseTemplateParam(state) ||
+          // "std" on its own isn't a template.
+          ParseSubstitution(state, /*accept_std=*/false));
+}
+
+// <template-args> ::= I <template-arg>+ E
+static bool ParseTemplateArgs(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  DisableAppend(state);
+  if (ParseOneCharToken(state, 'I') && OneOrMore(ParseTemplateArg, state) &&
+      ParseOneCharToken(state, 'E')) {
+    RestoreAppend(state, copy.append);
+    MaybeAppend(state, "<>");
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <template-arg>  ::= <type>
+//                 ::= <expr-primary>
+//                 ::= J <template-arg>* E        # argument pack
+//                 ::= X <expression> E
+static bool ParseTemplateArg(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'J') && ZeroOrMore(ParseTemplateArg, state) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // There can be significant overlap between the following leading to
+  // exponential backtracking:
+  //
+  //   <expr-primary> ::= L <type> <expr-cast-value> E
+  //                 e.g. L 2xxIvE 1                 E
+  //   <type>         ==> <local-source-name> <template-args>
+  //                 e.g. L 2xx               IvE
+  //
+  // This means parsing an entire <type> twice, and <type> can contain
+  // <template-arg>, so this can generate exponential backtracking.  There is
+  // only overlap when the remaining input starts with "L <source-name>", so
+  // parse all cases that can start this way jointly to share the common prefix.
+  //
+  // We have:
+  //
+  //   <template-arg> ::= <type>
+  //                  ::= <expr-primary>
+  //
+  // First, drop all the productions of <type> that must start with something
+  // other than 'L'.  All that's left is <class-enum-type>; inline it.
+  //
+  //   <type> ::= <nested-name> # starts with 'N'
+  //          ::= <unscoped-name>
+  //          ::= <unscoped-template-name> <template-args>
+  //          ::= <local-name> # starts with 'Z'
+  //
+  // Drop and inline again:
+  //
+  //   <type> ::= <unscoped-name>
+  //          ::= <unscoped-name> <template-args>
+  //          ::= <substitution> <template-args> # starts with 'S'
+  //
+  // Merge the first two, inline <unscoped-name>, drop last:
+  //
+  //   <type> ::= <unqualified-name> [<template-args>]
+  //          ::= St <unqualified-name> [<template-args>] # starts with 'S'
+  //
+  // Drop and inline:
+  //
+  //   <type> ::= <operator-name> [<template-args>] # starts with lowercase
+  //          ::= <ctor-dtor-name> [<template-args>] # starts with 'C' or 'D'
+  //          ::= <source-name> [<template-args>] # starts with digit
+  //          ::= <local-source-name> [<template-args>]
+  //          ::= <unnamed-type-name> [<template-args>] # starts with 'U'
+  //
+  // One more time:
+  //
+  //   <type> ::= L <source-name> [<template-args>]
+  //
+  // Likewise with <expr-primary>:
+  //
+  //   <expr-primary> ::= L <type> <expr-cast-value> E
+  //                  ::= LZ <encoding> E # cannot overlap; drop
+  //                  ::= L <mangled_name> E # cannot overlap; drop
+  //
+  // By similar reasoning as shown above, the only <type>s starting with
+  // <source-name> are "<source-name> [<template-args>]".  Inline this.
+  //
+  //   <expr-primary> ::= L <source-name> [<template-args>] <expr-cast-value> E
+  //
+  // Now inline both of these into <template-arg>:
+  //
+  //   <template-arg> ::= L <source-name> [<template-args>]
+  //                  ::= L <source-name> [<template-args>] <expr-cast-value> E
+  //
+  // Merge them and we're done:
+  //   <template-arg>
+  //     ::= L <source-name> [<template-args>] [<expr-cast-value> E]
+  if (ParseLocalSourceName(state) && Optional(ParseTemplateArgs(state))) {
+    copy = state->parse_state;
+    if (ParseExprCastValue(state) && ParseOneCharToken(state, 'E')) {
+      return true;
+    }
+    state->parse_state = copy;
+    return true;
+  }
+
+  // Now that the overlapping cases can't reach this code, we can safely call
+  // both of these.
+  if (ParseType(state) || ParseExprPrimary(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'X') && ParseExpression(state) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <unresolved-type> ::= <template-param> [<template-args>]
+//                   ::= <decltype>
+//                   ::= <substitution>
+static inline bool ParseUnresolvedType(State *state) {
+  // No ComplexityGuard because we don't copy the state in this stack frame.
+  return (ParseTemplateParam(state) && Optional(ParseTemplateArgs(state))) ||
+         ParseDecltype(state) || ParseSubstitution(state, /*accept_std=*/false);
+}
+
+// <simple-id> ::= <source-name> [<template-args>]
+static inline bool ParseSimpleId(State *state) {
+  // No ComplexityGuard because we don't copy the state in this stack frame.
+
+  // Note: <simple-id> cannot be followed by a parameter pack; see comment in
+  // ParseUnresolvedType.
+  return ParseSourceName(state) && Optional(ParseTemplateArgs(state));
+}
+
+// <base-unresolved-name> ::= <source-name> [<template-args>]
+//                        ::= on <operator-name> [<template-args>]
+//                        ::= dn <destructor-name>
+static bool ParseBaseUnresolvedName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+
+  if (ParseSimpleId(state)) {
+    return true;
+  }
+
+  ParseState copy = state->parse_state;
+  if (ParseTwoCharToken(state, "on") && ParseOperatorName(state, nullptr) &&
+      Optional(ParseTemplateArgs(state))) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "dn") &&
+      (ParseUnresolvedType(state) || ParseSimpleId(state))) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <unresolved-name> ::= [gs] <base-unresolved-name>
+//                   ::= sr <unresolved-type> <base-unresolved-name>
+//                   ::= srN <unresolved-type> <unresolved-qualifier-level>+ E
+//                         <base-unresolved-name>
+//                   ::= [gs] sr <unresolved-qualifier-level>+ E
+//                         <base-unresolved-name>
+static bool ParseUnresolvedName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+
+  ParseState copy = state->parse_state;
+  if (Optional(ParseTwoCharToken(state, "gs")) &&
+      ParseBaseUnresolvedName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "sr") && ParseUnresolvedType(state) &&
+      ParseBaseUnresolvedName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseTwoCharToken(state, "sr") && ParseOneCharToken(state, 'N') &&
+      ParseUnresolvedType(state) &&
+      OneOrMore(/* <unresolved-qualifier-level> ::= */ ParseSimpleId, state) &&
+      ParseOneCharToken(state, 'E') && ParseBaseUnresolvedName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (Optional(ParseTwoCharToken(state, "gs")) &&
+      ParseTwoCharToken(state, "sr") &&
+      OneOrMore(/* <unresolved-qualifier-level> ::= */ ParseSimpleId, state) &&
+      ParseOneCharToken(state, 'E') && ParseBaseUnresolvedName(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <expression> ::= <1-ary operator-name> <expression>
+//              ::= <2-ary operator-name> <expression> <expression>
+//              ::= <3-ary operator-name> <expression> <expression> <expression>
+//              ::= cl <expression>+ E
+//              ::= cv <type> <expression>      # type (expression)
+//              ::= cv <type> _ <expression>* E # type (expr-list)
+//              ::= st <type>
+//              ::= <template-param>
+//              ::= <function-param>
+//              ::= <expr-primary>
+//              ::= dt <expression> <unresolved-name> # expr.name
+//              ::= pt <expression> <unresolved-name> # expr->name
+//              ::= sp <expression>         # argument pack expansion
+//              ::= sr <type> <unqualified-name> <template-args>
+//              ::= sr <type> <unqualified-name>
+// <function-param> ::= fp <(top-level) CV-qualifiers> _
+//                  ::= fp <(top-level) CV-qualifiers> <number> _
+//                  ::= fL <number> p <(top-level) CV-qualifiers> _
+//                  ::= fL <number> p <(top-level) CV-qualifiers> <number> _
+static bool ParseExpression(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseTemplateParam(state) || ParseExprPrimary(state)) {
+    return true;
+  }
+
+  // Object/function call expression.
+  ParseState copy = state->parse_state;
+  if (ParseTwoCharToken(state, "cl") && OneOrMore(ParseExpression, state) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Function-param expression (level 0).
+  if (ParseTwoCharToken(state, "fp") && Optional(ParseCVQualifiers(state)) &&
+      Optional(ParseNumber(state, nullptr)) && ParseOneCharToken(state, '_')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Function-param expression (level 1+).
+  if (ParseTwoCharToken(state, "fL") && Optional(ParseNumber(state, nullptr)) &&
+      ParseOneCharToken(state, 'p') && Optional(ParseCVQualifiers(state)) &&
+      Optional(ParseNumber(state, nullptr)) && ParseOneCharToken(state, '_')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Parse the conversion expressions jointly to avoid re-parsing the <type> in
+  // their common prefix.  Parsed as:
+  // <expression> ::= cv <type> <conversion-args>
+  // <conversion-args> ::= _ <expression>* E
+  //                   ::= <expression>
+  //
+  // Also don't try ParseOperatorName after seeing "cv", since ParseOperatorName
+  // also needs to accept "cv <type>" in other contexts.
+  if (ParseTwoCharToken(state, "cv")) {
+    if (ParseType(state)) {
+      ParseState copy2 = state->parse_state;
+      if (ParseOneCharToken(state, '_') && ZeroOrMore(ParseExpression, state) &&
+          ParseOneCharToken(state, 'E')) {
+        return true;
+      }
+      state->parse_state = copy2;
+      if (ParseExpression(state)) {
+        return true;
+      }
+    }
+  } else {
+    // Parse unary, binary, and ternary operator expressions jointly, taking
+    // care not to re-parse subexpressions repeatedly. Parse like:
+    //   <expression> ::= <operator-name> <expression>
+    //                    [<one-to-two-expressions>]
+    //   <one-to-two-expressions> ::= <expression> [<expression>]
+    int arity = -1;
+    if (ParseOperatorName(state, &arity) &&
+        arity > 0 &&  // 0 arity => disabled.
+        (arity < 3 || ParseExpression(state)) &&
+        (arity < 2 || ParseExpression(state)) &&
+        (arity < 1 || ParseExpression(state))) {
+      return true;
+    }
+  }
+  state->parse_state = copy;
+
+  // sizeof type
+  if (ParseTwoCharToken(state, "st") && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Object and pointer member access expressions.
+  if ((ParseTwoCharToken(state, "dt") || ParseTwoCharToken(state, "pt")) &&
+      ParseExpression(state) && ParseType(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Pointer-to-member access expressions.  This parses the same as a binary
+  // operator, but it's implemented separately because "ds" shouldn't be
+  // accepted in other contexts that parse an operator name.
+  if (ParseTwoCharToken(state, "ds") && ParseExpression(state) &&
+      ParseExpression(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Parameter pack expansion
+  if (ParseTwoCharToken(state, "sp") && ParseExpression(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return ParseUnresolvedName(state);
+}
+
+// <expr-primary> ::= L <type> <(value) number> E
+//                ::= L <type> <(value) float> E
+//                ::= L <mangled-name> E
+//                // A bug in g++'s C++ ABI version 2 (-fabi-version=2).
+//                ::= LZ <encoding> E
+//
+// Warning, subtle: the "bug" LZ production above is ambiguous with the first
+// production where <type> starts with <local-name>, which can lead to
+// exponential backtracking in two scenarios:
+//
+// - When whatever follows the E in the <local-name> in the first production is
+//   not a name, we backtrack the whole <encoding> and re-parse the whole thing.
+//
+// - When whatever follows the <local-name> in the first production is not a
+//   number and this <expr-primary> may be followed by a name, we backtrack the
+//   <name> and re-parse it.
+//
+// Moreover this ambiguity isn't always resolved -- for example, the following
+// has two different parses:
+//
+//   _ZaaILZ4aoeuE1x1EvE
+//   => operator&&<aoeu, x, E, void>
+//   => operator&&<(aoeu::x)(1), void>
+//
+// To resolve this, we just do what GCC's demangler does, and refuse to parse
+// casts to <local-name> types.
+static bool ParseExprPrimary(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+
+  // The "LZ" special case: if we see LZ, we commit to accept "LZ <encoding> E"
+  // or fail, no backtracking.
+  if (ParseTwoCharToken(state, "LZ")) {
+    if (ParseEncoding(state) && ParseOneCharToken(state, 'E')) {
+      return true;
+    }
+
+    state->parse_state = copy;
+    return false;
+  }
+
+  // The merged cast production.
+  if (ParseOneCharToken(state, 'L') && ParseType(state) &&
+      ParseExprCastValue(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseOneCharToken(state, 'L') && ParseMangledName(state) &&
+      ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <number> or <float>, followed by 'E', as described above ParseExprPrimary.
+static bool ParseExprCastValue(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  // We have to be able to backtrack after accepting a number because we could
+  // have e.g. "7fffE", which will accept "7" as a number but then fail to find
+  // the 'E'.
+  ParseState copy = state->parse_state;
+  if (ParseNumber(state, nullptr) && ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  if (ParseFloatNumber(state) && ParseOneCharToken(state, 'E')) {
+    return true;
+  }
+  state->parse_state = copy;
+
+  return false;
+}
+
+// <local-name> ::= Z <(function) encoding> E <(entity) name> [<discriminator>]
+//              ::= Z <(function) encoding> E s [<discriminator>]
+//
+// Parsing a common prefix of these two productions together avoids an
+// exponential blowup of backtracking.  Parse like:
+//   <local-name> := Z <encoding> E <local-name-suffix>
+//   <local-name-suffix> ::= s [<discriminator>]
+//                       ::= <name> [<discriminator>]
+
+static bool ParseLocalNameSuffix(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+
+  if (MaybeAppend(state, "::") && ParseName(state) &&
+      Optional(ParseDiscriminator(state))) {
+    return true;
+  }
+
+  // Since we're not going to overwrite the above "::" by re-parsing the
+  // <encoding> (whose trailing '\0' byte was in the byte now holding the
+  // first ':'), we have to rollback the "::" if the <name> parse failed.
+  if (state->parse_state.append) {
+    state->out[state->parse_state.out_cur_idx - 2] = '\0';
+  }
+
+  return ParseOneCharToken(state, 's') && Optional(ParseDiscriminator(state));
+}
+
+static bool ParseLocalName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'Z') && ParseEncoding(state) &&
+      ParseOneCharToken(state, 'E') && ParseLocalNameSuffix(state)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <discriminator> := _ <(non-negative) number>
+static bool ParseDiscriminator(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, '_') && ParseNumber(state, nullptr)) {
+    return true;
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// <substitution> ::= S_
+//                ::= S <seq-id> _
+//                ::= St, etc.
+//
+// "St" is special in that it's not valid as a standalone name, and it *is*
+// allowed to precede a name without being wrapped in "N...E".  This means that
+// if we accept it on its own, we can accept "St1a" and try to parse
+// template-args, then fail and backtrack, accept "St" on its own, then "1a" as
+// an unqualified name and re-parse the same template-args.  To block this
+// exponential backtracking, we disable it with 'accept_std=false' in
+// problematic contexts.
+static bool ParseSubstitution(State *state, bool accept_std) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseTwoCharToken(state, "S_")) {
+    MaybeAppend(state, "?");  // We don't support substitutions.
+    return true;
+  }
+
+  ParseState copy = state->parse_state;
+  if (ParseOneCharToken(state, 'S') && ParseSeqId(state) &&
+      ParseOneCharToken(state, '_')) {
+    MaybeAppend(state, "?");  // We don't support substitutions.
+    return true;
+  }
+  state->parse_state = copy;
+
+  // Expand abbreviations like "St" => "std".
+  if (ParseOneCharToken(state, 'S')) {
+    const AbbrevPair *p;
+    for (p = kSubstitutionList; p->abbrev != nullptr; ++p) {
+      if (RemainingInput(state)[0] == p->abbrev[1] &&
+          (accept_std || p->abbrev[1] != 't')) {
+        MaybeAppend(state, "std");
+        if (p->real_name[0] != '\0') {
+          MaybeAppend(state, "::");
+          MaybeAppend(state, p->real_name);
+        }
+        ++state->parse_state.mangled_idx;
+        return true;
+      }
+    }
+  }
+  state->parse_state = copy;
+  return false;
+}
+
+// Parse <mangled-name>, optionally followed by either a function-clone suffix
+// or version suffix.  Returns true only if all of "mangled_cur" was consumed.
+static bool ParseTopLevelMangledName(State *state) {
+  ComplexityGuard guard(state);
+  if (guard.IsTooComplex()) return false;
+  if (ParseMangledName(state)) {
+    if (RemainingInput(state)[0] != '\0') {
+      // Drop trailing function clone suffix, if any.
+      if (IsFunctionCloneSuffix(RemainingInput(state))) {
+        return true;
+      }
+      // Append trailing version suffix if any.
+      // ex. _Z3foo@@GLIBCXX_3.4
+      if (RemainingInput(state)[0] == '@') {
+        MaybeAppend(state, RemainingInput(state));
+        return true;
+      }
+      return false;  // Unconsumed suffix.
+    }
+    return true;
+  }
+  return false;
+}
+
+static bool Overflowed(const State *state) {
+  return state->parse_state.out_cur_idx >= state->out_end_idx;
+}
+
+// The demangler entry point.
+bool Demangle(const char *mangled, char *out, int out_size) {
+  State state;
+  InitState(&state, mangled, out, out_size);
+  return ParseTopLevelMangledName(&state) && !Overflowed(&state);
+}
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.h
new file mode 100644
index 0000000..c314d9b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/demangle.h	
@@ -0,0 +1,71 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// An async-signal-safe and thread-safe demangler for Itanium C++ ABI
+// (aka G++ V3 ABI).
+//
+// The demangler is implemented to be used in async signal handlers to
+// symbolize stack traces.  We cannot use libstdc++'s
+// abi::__cxa_demangle() in such signal handlers since it's not async
+// signal safe (it uses malloc() internally).
+//
+// Note that this demangler doesn't support full demangling.  More
+// specifically, it doesn't print types of function parameters and
+// types of template arguments.  It just skips them.  However, it's
+// still very useful to extract basic information such as class,
+// function, constructor, destructor, and operator names.
+//
+// See the implementation note in demangle.cc if you are interested.
+//
+// Example:
+//
+// | Mangled Name  | The Demangler | abi::__cxa_demangle()
+// |---------------|---------------|-----------------------
+// | _Z1fv         | f()           | f()
+// | _Z1fi         | f()           | f(int)
+// | _Z3foo3bar    | foo()         | foo(bar)
+// | _Z1fIiEvi     | f<>()         | void f<int>(int)
+// | _ZN1N1fE      | N::f          | N::f
+// | _ZN3Foo3BarEv | Foo::Bar()    | Foo::Bar()
+// | _Zrm1XS_"     | operator%()   | operator%(X, X)
+// | _ZN3FooC1Ev   | Foo::Foo()    | Foo::Foo()
+// | _Z1fSs        | f()           | f(std::basic_string<char,
+// |               |               |   std::char_traits<char>,
+// |               |               |   std::allocator<char> >)
+//
+// See the unit test for more examples.
+//
+// Note: we might want to write demanglers for ABIs other than Itanium
+// C++ ABI in the future.
+//
+
+#ifndef ABSL_DEBUGGING_INTERNAL_DEMANGLE_H_
+#define ABSL_DEBUGGING_INTERNAL_DEMANGLE_H_
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// Demangle `mangled`.  On success, return true and write the
+// demangled symbol name to `out`.  Otherwise, return false.
+// `out` is modified even if demangling is unsuccessful.
+bool Demangle(const char *mangled, char *out, int out_size);
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_DEMANGLE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.cc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.cc
new file mode 100644
index 0000000..24cc013
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.cc	
@@ -0,0 +1,382 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Allow dynamic symbol lookup in an in-memory Elf image.
+//
+
+#include "absl/debugging/internal/elf_mem_image.h"
+
+#ifdef ABSL_HAVE_ELF_MEM_IMAGE  // defined in elf_mem_image.h
+
+#include <string.h>
+#include <cassert>
+#include <cstddef>
+#include "absl/base/internal/raw_logging.h"
+
+// From binutils/include/elf/common.h (this doesn't appear to be documented
+// anywhere else).
+//
+//   /* This flag appears in a Versym structure.  It means that the symbol
+//      is hidden, and is only visible with an explicit version number.
+//      This is a GNU extension.  */
+//   #define VERSYM_HIDDEN           0x8000
+//
+//   /* This is the mask for the rest of the Versym information.  */
+//   #define VERSYM_VERSION          0x7fff
+
+#define VERSYM_VERSION 0x7fff
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+namespace {
+
+#if __WORDSIZE == 32
+const int kElfClass = ELFCLASS32;
+int ElfBind(const ElfW(Sym) *symbol) { return ELF32_ST_BIND(symbol->st_info); }
+int ElfType(const ElfW(Sym) *symbol) { return ELF32_ST_TYPE(symbol->st_info); }
+#elif __WORDSIZE == 64
+const int kElfClass = ELFCLASS64;
+int ElfBind(const ElfW(Sym) *symbol) { return ELF64_ST_BIND(symbol->st_info); }
+int ElfType(const ElfW(Sym) *symbol) { return ELF64_ST_TYPE(symbol->st_info); }
+#else
+const int kElfClass = -1;
+int ElfBind(const ElfW(Sym) *) {
+  ABSL_RAW_LOG(FATAL, "Unexpected word size");
+  return 0;
+}
+int ElfType(const ElfW(Sym) *) {
+  ABSL_RAW_LOG(FATAL, "Unexpected word size");
+  return 0;
+}
+#endif
+
+// Extract an element from one of the ELF tables, cast it to desired type.
+// This is just a simple arithmetic and a glorified cast.
+// Callers are responsible for bounds checking.
+template <typename T>
+const T *GetTableElement(const ElfW(Ehdr) * ehdr, ElfW(Off) table_offset,
+                         ElfW(Word) element_size, size_t index) {
+  return reinterpret_cast<const T*>(reinterpret_cast<const char *>(ehdr)
+                                    + table_offset
+                                    + index * element_size);
+}
+
+}  // namespace
+
+// The value of this variable doesn't matter; it's used only for its
+// unique address.
+const int ElfMemImage::kInvalidBaseSentinel = 0;
+
+ElfMemImage::ElfMemImage(const void *base) {
+  ABSL_RAW_CHECK(base != kInvalidBase, "bad pointer");
+  Init(base);
+}
+
+int ElfMemImage::GetNumSymbols() const {
+  if (!hash_) {
+    return 0;
+  }
+  // See http://www.caldera.com/developers/gabi/latest/ch5.dynamic.html#hash
+  return hash_[1];
+}
+
+const ElfW(Sym) *ElfMemImage::GetDynsym(int index) const {
+  ABSL_RAW_CHECK(index < GetNumSymbols(), "index out of range");
+  return dynsym_ + index;
+}
+
+const ElfW(Versym) *ElfMemImage::GetVersym(int index) const {
+  ABSL_RAW_CHECK(index < GetNumSymbols(), "index out of range");
+  return versym_ + index;
+}
+
+const ElfW(Phdr) *ElfMemImage::GetPhdr(int index) const {
+  ABSL_RAW_CHECK(index < ehdr_->e_phnum, "index out of range");
+  return GetTableElement<ElfW(Phdr)>(ehdr_,
+                                     ehdr_->e_phoff,
+                                     ehdr_->e_phentsize,
+                                     index);
+}
+
+const char *ElfMemImage::GetDynstr(ElfW(Word) offset) const {
+  ABSL_RAW_CHECK(offset < strsize_, "offset out of range");
+  return dynstr_ + offset;
+}
+
+const void *ElfMemImage::GetSymAddr(const ElfW(Sym) *sym) const {
+  if (sym->st_shndx == SHN_UNDEF || sym->st_shndx >= SHN_LORESERVE) {
+    // Symbol corresponds to "special" (e.g. SHN_ABS) section.
+    return reinterpret_cast<const void *>(sym->st_value);
+  }
+  ABSL_RAW_CHECK(link_base_ < sym->st_value, "symbol out of range");
+  return GetTableElement<char>(ehdr_, 0, 1, sym->st_value - link_base_);
+}
+
+const ElfW(Verdef) *ElfMemImage::GetVerdef(int index) const {
+  ABSL_RAW_CHECK(0 <= index && static_cast<size_t>(index) <= verdefnum_,
+                 "index out of range");
+  const ElfW(Verdef) *version_definition = verdef_;
+  while (version_definition->vd_ndx < index && version_definition->vd_next) {
+    const char *const version_definition_as_char =
+        reinterpret_cast<const char *>(version_definition);
+    version_definition =
+        reinterpret_cast<const ElfW(Verdef) *>(version_definition_as_char +
+                                               version_definition->vd_next);
+  }
+  return version_definition->vd_ndx == index ? version_definition : nullptr;
+}
+
+const ElfW(Verdaux) *ElfMemImage::GetVerdefAux(
+    const ElfW(Verdef) *verdef) const {
+  return reinterpret_cast<const ElfW(Verdaux) *>(verdef+1);
+}
+
+const char *ElfMemImage::GetVerstr(ElfW(Word) offset) const {
+  ABSL_RAW_CHECK(offset < strsize_, "offset out of range");
+  return dynstr_ + offset;
+}
+
+void ElfMemImage::Init(const void *base) {
+  ehdr_      = nullptr;
+  dynsym_    = nullptr;
+  dynstr_    = nullptr;
+  versym_    = nullptr;
+  verdef_    = nullptr;
+  hash_      = nullptr;
+  strsize_   = 0;
+  verdefnum_ = 0;
+  link_base_ = ~0L;  // Sentinel: PT_LOAD .p_vaddr can't possibly be this.
+  if (!base) {
+    return;
+  }
+  const char *const base_as_char = reinterpret_cast<const char *>(base);
+  if (base_as_char[EI_MAG0] != ELFMAG0 || base_as_char[EI_MAG1] != ELFMAG1 ||
+      base_as_char[EI_MAG2] != ELFMAG2 || base_as_char[EI_MAG3] != ELFMAG3) {
+    assert(false);
+    return;
+  }
+  int elf_class = base_as_char[EI_CLASS];
+  if (elf_class != kElfClass) {
+    assert(false);
+    return;
+  }
+  switch (base_as_char[EI_DATA]) {
+    case ELFDATA2LSB: {
+      if (__LITTLE_ENDIAN != __BYTE_ORDER) {
+        assert(false);
+        return;
+      }
+      break;
+    }
+    case ELFDATA2MSB: {
+      if (__BIG_ENDIAN != __BYTE_ORDER) {
+        assert(false);
+        return;
+      }
+      break;
+    }
+    default: {
+      assert(false);
+      return;
+    }
+  }
+
+  ehdr_ = reinterpret_cast<const ElfW(Ehdr) *>(base);
+  const ElfW(Phdr) *dynamic_program_header = nullptr;
+  for (int i = 0; i < ehdr_->e_phnum; ++i) {
+    const ElfW(Phdr) *const program_header = GetPhdr(i);
+    switch (program_header->p_type) {
+      case PT_LOAD:
+        if (!~link_base_) {
+          link_base_ = program_header->p_vaddr;
+        }
+        break;
+      case PT_DYNAMIC:
+        dynamic_program_header = program_header;
+        break;
+    }
+  }
+  if (!~link_base_ || !dynamic_program_header) {
+    assert(false);
+    // Mark this image as not present. Can not recur infinitely.
+    Init(nullptr);
+    return;
+  }
+  ptrdiff_t relocation =
+      base_as_char - reinterpret_cast<const char *>(link_base_);
+  ElfW(Dyn) *dynamic_entry =
+      reinterpret_cast<ElfW(Dyn) *>(dynamic_program_header->p_vaddr +
+                                    relocation);
+  for (; dynamic_entry->d_tag != DT_NULL; ++dynamic_entry) {
+    const ElfW(Xword) value = dynamic_entry->d_un.d_val + relocation;
+    switch (dynamic_entry->d_tag) {
+      case DT_HASH:
+        hash_ = reinterpret_cast<ElfW(Word) *>(value);
+        break;
+      case DT_SYMTAB:
+        dynsym_ = reinterpret_cast<ElfW(Sym) *>(value);
+        break;
+      case DT_STRTAB:
+        dynstr_ = reinterpret_cast<const char *>(value);
+        break;
+      case DT_VERSYM:
+        versym_ = reinterpret_cast<ElfW(Versym) *>(value);
+        break;
+      case DT_VERDEF:
+        verdef_ = reinterpret_cast<ElfW(Verdef) *>(value);
+        break;
+      case DT_VERDEFNUM:
+        verdefnum_ = dynamic_entry->d_un.d_val;
+        break;
+      case DT_STRSZ:
+        strsize_ = dynamic_entry->d_un.d_val;
+        break;
+      default:
+        // Unrecognized entries explicitly ignored.
+        break;
+    }
+  }
+  if (!hash_ || !dynsym_ || !dynstr_ || !versym_ ||
+      !verdef_ || !verdefnum_ || !strsize_) {
+    assert(false);  // invalid VDSO
+    // Mark this image as not present. Can not recur infinitely.
+    Init(nullptr);
+    return;
+  }
+}
+
+bool ElfMemImage::LookupSymbol(const char *name,
+                               const char *version,
+                               int type,
+                               SymbolInfo *info_out) const {
+  for (const SymbolInfo& info : *this) {
+    if (strcmp(info.name, name) == 0 && strcmp(info.version, version) == 0 &&
+        ElfType(info.symbol) == type) {
+      if (info_out) {
+        *info_out = info;
+      }
+      return true;
+    }
+  }
+  return false;
+}
+
+bool ElfMemImage::LookupSymbolByAddress(const void *address,
+                                        SymbolInfo *info_out) const {
+  for (const SymbolInfo& info : *this) {
+    const char *const symbol_start =
+        reinterpret_cast<const char *>(info.address);
+    const char *const symbol_end = symbol_start + info.symbol->st_size;
+    if (symbol_start <= address && address < symbol_end) {
+      if (info_out) {
+        // Client wants to know details for that symbol (the usual case).
+        if (ElfBind(info.symbol) == STB_GLOBAL) {
+          // Strong symbol; just return it.
+          *info_out = info;
+          return true;
+        } else {
+          // Weak or local. Record it, but keep looking for a strong one.
+          *info_out = info;
+        }
+      } else {
+        // Client only cares if there is an overlapping symbol.
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+ElfMemImage::SymbolIterator::SymbolIterator(const void *const image, int index)
+    : index_(index), image_(image) {
+}
+
+const ElfMemImage::SymbolInfo *ElfMemImage::SymbolIterator::operator->() const {
+  return &info_;
+}
+
+const ElfMemImage::SymbolInfo& ElfMemImage::SymbolIterator::operator*() const {
+  return info_;
+}
+
+bool ElfMemImage::SymbolIterator::operator==(const SymbolIterator &rhs) const {
+  return this->image_ == rhs.image_ && this->index_ == rhs.index_;
+}
+
+bool ElfMemImage::SymbolIterator::operator!=(const SymbolIterator &rhs) const {
+  return !(*this == rhs);
+}
+
+ElfMemImage::SymbolIterator &ElfMemImage::SymbolIterator::operator++() {
+  this->Update(1);
+  return *this;
+}
+
+ElfMemImage::SymbolIterator ElfMemImage::begin() const {
+  SymbolIterator it(this, 0);
+  it.Update(0);
+  return it;
+}
+
+ElfMemImage::SymbolIterator ElfMemImage::end() const {
+  return SymbolIterator(this, GetNumSymbols());
+}
+
+void ElfMemImage::SymbolIterator::Update(int increment) {
+  const ElfMemImage *image = reinterpret_cast<const ElfMemImage *>(image_);
+  ABSL_RAW_CHECK(image->IsPresent() || increment == 0, "");
+  if (!image->IsPresent()) {
+    return;
+  }
+  index_ += increment;
+  if (index_ >= image->GetNumSymbols()) {
+    index_ = image->GetNumSymbols();
+    return;
+  }
+  const ElfW(Sym)    *symbol = image->GetDynsym(index_);
+  const ElfW(Versym) *version_symbol = image->GetVersym(index_);
+  ABSL_RAW_CHECK(symbol && version_symbol, "");
+  const char *const symbol_name = image->GetDynstr(symbol->st_name);
+  const ElfW(Versym) version_index = version_symbol[0] & VERSYM_VERSION;
+  const ElfW(Verdef) *version_definition = nullptr;
+  const char *version_name = "";
+  if (symbol->st_shndx == SHN_UNDEF) {
+    // Undefined symbols reference DT_VERNEED, not DT_VERDEF, and
+    // version_index could well be greater than verdefnum_, so calling
+    // GetVerdef(version_index) may trigger assertion.
+  } else {
+    version_definition = image->GetVerdef(version_index);
+  }
+  if (version_definition) {
+    // I am expecting 1 or 2 auxiliary entries: 1 for the version itself,
+    // optional 2nd if the version has a parent.
+    ABSL_RAW_CHECK(
+        version_definition->vd_cnt == 1 || version_definition->vd_cnt == 2,
+        "wrong number of entries");
+    const ElfW(Verdaux) *version_aux = image->GetVerdefAux(version_definition);
+    version_name = image->GetVerstr(version_aux->vda_name);
+  }
+  info_.name    = symbol_name;
+  info_.version = version_name;
+  info_.address = image->GetSymAddr(symbol);
+  info_.symbol  = symbol;
+}
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HAVE_ELF_MEM_IMAGE
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.h
new file mode 100644
index 0000000..46bfade
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/elf_mem_image.h	
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2017 The Abseil Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Allow dynamic symbol lookup for in-memory Elf images.
+
+#ifndef ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_
+#define ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_
+
+// Including this will define the __GLIBC__ macro if glibc is being
+// used.
+#include <climits>
+
+#include "absl/base/config.h"
+
+// Maybe one day we can rewrite this file not to require the elf
+// symbol extensions in glibc, but for right now we need them.
+#ifdef ABSL_HAVE_ELF_MEM_IMAGE
+#error ABSL_HAVE_ELF_MEM_IMAGE cannot be directly set
+#endif
+
+#if defined(__ELF__) && defined(__GLIBC__) && !defined(__native_client__) && \
+    !defined(__asmjs__) && !defined(__wasm__)
+#define ABSL_HAVE_ELF_MEM_IMAGE 1
+#endif
+
+#ifdef ABSL_HAVE_ELF_MEM_IMAGE
+
+#include <link.h>  // for ElfW
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// An in-memory ELF image (may not exist on disk).
+class ElfMemImage {
+ private:
+  // Sentinel: there could never be an elf image at &kInvalidBaseSentinel.
+  static const int kInvalidBaseSentinel;
+
+ public:
+  // Sentinel: there could never be an elf image at this address.
+  static constexpr const void *const kInvalidBase =
+    static_cast<const void*>(&kInvalidBaseSentinel);
+
+  // Information about a single vdso symbol.
+  // All pointers are into .dynsym, .dynstr, or .text of the VDSO.
+  // Do not free() them or modify through them.
+  struct SymbolInfo {
+    const char      *name;      // E.g. "__vdso_getcpu"
+    const char      *version;   // E.g. "LINUX_2.6", could be ""
+                                // for unversioned symbol.
+    const void      *address;   // Relocated symbol address.
+    const ElfW(Sym) *symbol;    // Symbol in the dynamic symbol table.
+  };
+
+  // Supports iteration over all dynamic symbols.
+  class SymbolIterator {
+   public:
+    friend class ElfMemImage;
+    const SymbolInfo *operator->() const;
+    const SymbolInfo &operator*() const;
+    SymbolIterator& operator++();
+    bool operator!=(const SymbolIterator &rhs) const;
+    bool operator==(const SymbolIterator &rhs) const;
+   private:
+    SymbolIterator(const void *const image, int index);
+    void Update(int incr);
+    SymbolInfo info_;
+    int index_;
+    const void *const image_;
+  };
+
+
+  explicit ElfMemImage(const void *base);
+  void                 Init(const void *base);
+  bool                 IsPresent() const { return ehdr_ != nullptr; }
+  const ElfW(Phdr)*    GetPhdr(int index) const;
+  const ElfW(Sym)*     GetDynsym(int index) const;
+  const ElfW(Versym)*  GetVersym(int index) const;
+  const ElfW(Verdef)*  GetVerdef(int index) const;
+  const ElfW(Verdaux)* GetVerdefAux(const ElfW(Verdef) *verdef) const;
+  const char*          GetDynstr(ElfW(Word) offset) const;
+  const void*          GetSymAddr(const ElfW(Sym) *sym) const;
+  const char*          GetVerstr(ElfW(Word) offset) const;
+  int                  GetNumSymbols() const;
+
+  SymbolIterator begin() const;
+  SymbolIterator end() const;
+
+  // Look up versioned dynamic symbol in the image.
+  // Returns false if image is not present, or doesn't contain given
+  // symbol/version/type combination.
+  // If info_out is non-null, additional details are filled in.
+  bool LookupSymbol(const char *name, const char *version,
+                    int symbol_type, SymbolInfo *info_out) const;
+
+  // Find info about symbol (if any) which overlaps given address.
+  // Returns true if symbol was found; false if image isn't present
+  // or doesn't have a symbol overlapping given address.
+  // If info_out is non-null, additional details are filled in.
+  bool LookupSymbolByAddress(const void *address, SymbolInfo *info_out) const;
+
+ private:
+  const ElfW(Ehdr) *ehdr_;
+  const ElfW(Sym) *dynsym_;
+  const ElfW(Versym) *versym_;
+  const ElfW(Verdef) *verdef_;
+  const ElfW(Word) *hash_;
+  const char *dynstr_;
+  size_t strsize_;
+  size_t verdefnum_;
+  ElfW(Addr) link_base_;     // Link-time base (p_vaddr of first PT_LOAD).
+};
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HAVE_ELF_MEM_IMAGE
+
+#endif  // ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_aarch64-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_aarch64-inl.inc
new file mode 100644
index 0000000..411ea30
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_aarch64-inl.inc	
@@ -0,0 +1,192 @@
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_AARCH64_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_AARCH64_INL_H_
+
+// Generate stack tracer for aarch64
+
+#if defined(__linux__)
+#include <sys/mman.h>
+#include <ucontext.h>
+#include <unistd.h>
+#endif
+
+#include <atomic>
+#include <cassert>
+#include <cstdint>
+#include <iostream>
+
+#include "absl/base/attributes.h"
+#include "absl/debugging/internal/address_is_readable.h"
+#include "absl/debugging/internal/vdso_support.h"  // a no-op on non-elf or non-glibc systems
+#include "absl/debugging/stacktrace.h"
+
+static const uintptr_t kUnknownFrameSize = 0;
+
+#if defined(__linux__)
+// Returns the address of the VDSO __kernel_rt_sigreturn function, if present.
+static const unsigned char* GetKernelRtSigreturnAddress() {
+  constexpr uintptr_t kImpossibleAddress = 1;
+  ABSL_CONST_INIT static std::atomic<uintptr_t> memoized{kImpossibleAddress};
+  uintptr_t address = memoized.load(std::memory_order_relaxed);
+  if (address != kImpossibleAddress) {
+    return reinterpret_cast<const unsigned char*>(address);
+  }
+
+  address = reinterpret_cast<uintptr_t>(nullptr);
+
+#ifdef ABSL_HAVE_VDSO_SUPPORT
+  absl::debugging_internal::VDSOSupport vdso;
+  if (vdso.IsPresent()) {
+    absl::debugging_internal::VDSOSupport::SymbolInfo symbol_info;
+    if (!vdso.LookupSymbol("__kernel_rt_sigreturn", "LINUX_2.6.39", STT_FUNC,
+                           &symbol_info) ||
+        symbol_info.address == nullptr) {
+      // Unexpected: VDSO is present, yet the expected symbol is missing
+      // or null.
+      assert(false && "VDSO is present, but doesn't have expected symbol");
+    } else {
+      if (reinterpret_cast<uintptr_t>(symbol_info.address) !=
+          kImpossibleAddress) {
+        address = reinterpret_cast<uintptr_t>(symbol_info.address);
+      } else {
+        assert(false && "VDSO returned invalid address");
+      }
+    }
+  }
+#endif
+
+  memoized.store(address, std::memory_order_relaxed);
+  return reinterpret_cast<const unsigned char*>(address);
+}
+#endif  // __linux__
+
+// Compute the size of a stack frame in [low..high).  We assume that
+// low < high.  Return size of kUnknownFrameSize.
+template<typename T>
+static inline uintptr_t ComputeStackFrameSize(const T* low,
+                                              const T* high) {
+  const char* low_char_ptr = reinterpret_cast<const char *>(low);
+  const char* high_char_ptr = reinterpret_cast<const char *>(high);
+  return low < high ? high_char_ptr - low_char_ptr : kUnknownFrameSize;
+}
+
+// Given a pointer to a stack frame, locate and return the calling
+// stackframe, or return null if no stackframe can be found. Perform sanity
+// checks (the strictness of which is controlled by the boolean parameter
+// "STRICT_UNWINDING") to reduce the chance that a bad pointer is returned.
+template<bool STRICT_UNWINDING, bool WITH_CONTEXT>
+static void **NextStackFrame(void **old_frame_pointer, const void *uc) {
+  void **new_frame_pointer = reinterpret_cast<void**>(*old_frame_pointer);
+  bool check_frame_size = true;
+
+#if defined(__linux__)
+  if (WITH_CONTEXT && uc != nullptr) {
+    // Check to see if next frame's return address is __kernel_rt_sigreturn.
+    if (old_frame_pointer[1] == GetKernelRtSigreturnAddress()) {
+      const ucontext_t *ucv = static_cast<const ucontext_t *>(uc);
+      // old_frame_pointer[0] is not suitable for unwinding, look at
+      // ucontext to discover frame pointer before signal.
+      void **const pre_signal_frame_pointer =
+          reinterpret_cast<void **>(ucv->uc_mcontext.regs[29]);
+
+      // Check that alleged frame pointer is actually readable. This is to
+      // prevent "double fault" in case we hit the first fault due to e.g.
+      // stack corruption.
+      if (!absl::debugging_internal::AddressIsReadable(
+              pre_signal_frame_pointer))
+        return nullptr;
+
+      // Alleged frame pointer is readable, use it for further unwinding.
+      new_frame_pointer = pre_signal_frame_pointer;
+
+      // Skip frame size check if we return from a signal. We may be using a
+      // an alternate stack for signals.
+      check_frame_size = false;
+    }
+  }
+#endif
+
+  // aarch64 ABI requires stack pointer to be 16-byte-aligned.
+  if ((reinterpret_cast<uintptr_t>(new_frame_pointer) & 15) != 0)
+    return nullptr;
+
+  // Check frame size.  In strict mode, we assume frames to be under
+  // 100,000 bytes.  In non-strict mode, we relax the limit to 1MB.
+  if (check_frame_size) {
+    const uintptr_t max_size = STRICT_UNWINDING ? 100000 : 1000000;
+    const uintptr_t frame_size =
+        ComputeStackFrameSize(old_frame_pointer, new_frame_pointer);
+    if (frame_size == kUnknownFrameSize || frame_size > max_size)
+      return nullptr;
+  }
+
+  return new_frame_pointer;
+}
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
+                      const void *ucp, int *min_dropped_frames) {
+#ifdef __GNUC__
+  void **frame_pointer = reinterpret_cast<void**>(__builtin_frame_address(0));
+#else
+# error reading stack point not yet supported on this platform.
+#endif
+
+  skip_count++;    // Skip the frame for this function.
+  int n = 0;
+
+  // The frame pointer points to low address of a frame.  The first 64-bit
+  // word of a frame points to the next frame up the call chain, which normally
+  // is just after the high address of the current frame.  The second word of
+  // a frame contains return adress of to the caller.   To find a pc value
+  // associated with the current frame, we need to go down a level in the call
+  // chain.  So we remember return the address of the last frame seen.  This
+  // does not work for the first stack frame, which belongs to UnwindImp() but
+  // we skip the frame for UnwindImp() anyway.
+  void* prev_return_address = nullptr;
+
+  while (frame_pointer && n < max_depth) {
+    // The absl::GetStackFrames routine is called when we are in some
+    // informational context (the failure signal handler for example).
+    // Use the non-strict unwinding rules to produce a stack trace
+    // that is as complete as possible (even if it contains a few bogus
+    // entries in some rare cases).
+    void **next_frame_pointer =
+        NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(frame_pointer, ucp);
+
+    if (skip_count > 0) {
+      skip_count--;
+    } else {
+      result[n] = prev_return_address;
+      if (IS_STACK_FRAMES) {
+        sizes[n] = ComputeStackFrameSize(frame_pointer, next_frame_pointer);
+      }
+      n++;
+    }
+    prev_return_address = frame_pointer[1];
+    frame_pointer = next_frame_pointer;
+  }
+  if (min_dropped_frames != nullptr) {
+    // Implementation detail: we clamp the max of frames we are willing to
+    // count, so as not to spend too much time in the loop below.
+    const int kMaxUnwind = 200;
+    int j = 0;
+    for (; frame_pointer != nullptr && j < kMaxUnwind; j++) {
+      frame_pointer =
+          NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(frame_pointer, ucp);
+    }
+    *min_dropped_frames = j;
+  }
+  return n;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return true;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_AARCH64_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_arm-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_arm-inl.inc
new file mode 100644
index 0000000..fffda96
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_arm-inl.inc	
@@ -0,0 +1,125 @@
+// Copyright 2011 and onwards Google Inc.
+// All rights reserved.
+//
+// Author: Doug Kwan
+// This is inspired by Craig Silverstein's PowerPC stacktrace code.
+//
+
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_ARM_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_ARM_INL_H_
+
+#include <cstdint>
+
+#include "absl/debugging/stacktrace.h"
+
+// WARNING:
+// This only works if all your code is in either ARM or THUMB mode.  With
+// interworking, the frame pointer of the caller can either be in r11 (ARM
+// mode) or r7 (THUMB mode).  A callee only saves the frame pointer of its
+// mode in a fixed location on its stack frame.  If the caller is a different
+// mode, there is no easy way to find the frame pointer.  It can either be
+// still in the designated register or saved on stack along with other callee
+// saved registers.
+
+// Given a pointer to a stack frame, locate and return the calling
+// stackframe, or return nullptr if no stackframe can be found. Perform sanity
+// checks (the strictness of which is controlled by the boolean parameter
+// "STRICT_UNWINDING") to reduce the chance that a bad pointer is returned.
+template<bool STRICT_UNWINDING>
+static void **NextStackFrame(void **old_sp) {
+  void **new_sp = (void**) old_sp[-1];
+
+  // Check that the transition from frame pointer old_sp to frame
+  // pointer new_sp isn't clearly bogus
+  if (STRICT_UNWINDING) {
+    // With the stack growing downwards, older stack frame must be
+    // at a greater address that the current one.
+    if (new_sp <= old_sp) return nullptr;
+    // Assume stack frames larger than 100,000 bytes are bogus.
+    if ((uintptr_t)new_sp - (uintptr_t)old_sp > 100000) return nullptr;
+  } else {
+    // In the non-strict mode, allow discontiguous stack frames.
+    // (alternate-signal-stacks for example).
+    if (new_sp == old_sp) return nullptr;
+    // And allow frames upto about 1MB.
+    if ((new_sp > old_sp)
+        && ((uintptr_t)new_sp - (uintptr_t)old_sp > 1000000)) return nullptr;
+  }
+  if ((uintptr_t)new_sp & (sizeof(void *) - 1)) return nullptr;
+  return new_sp;
+}
+
+// This ensures that absl::GetStackTrace sets up the Link Register properly.
+#ifdef __GNUC__
+void StacktraceArmDummyFunction() __attribute__((noinline));
+void StacktraceArmDummyFunction() { __asm__ volatile(""); }
+#else
+# error StacktraceArmDummyFunction() needs to be ported to this platform.
+#endif
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
+                      const void * /* ucp */, int *min_dropped_frames) {
+#ifdef __GNUC__
+  void **sp = reinterpret_cast<void**>(__builtin_frame_address(0));
+#else
+# error reading stack point not yet supported on this platform.
+#endif
+
+  // On ARM, the return address is stored in the link register (r14).
+  // This is not saved on the stack frame of a leaf function.  To
+  // simplify code that reads return addresses, we call a dummy
+  // function so that the return address of this function is also
+  // stored in the stack frame.  This works at least for gcc.
+  StacktraceArmDummyFunction();
+
+  int n = 0;
+  while (sp && n < max_depth) {
+    // The absl::GetStackFrames routine is called when we are in some
+    // informational context (the failure signal handler for example).
+    // Use the non-strict unwinding rules to produce a stack trace
+    // that is as complete as possible (even if it contains a few bogus
+    // entries in some rare cases).
+    void **next_sp = NextStackFrame<!IS_STACK_FRAMES>(sp);
+
+    if (skip_count > 0) {
+      skip_count--;
+    } else {
+      result[n] = *sp;
+
+      if (IS_STACK_FRAMES) {
+        if (next_sp > sp) {
+          sizes[n] = (uintptr_t)next_sp - (uintptr_t)sp;
+        } else {
+          // A frame-size of 0 is used to indicate unknown frame size.
+          sizes[n] = 0;
+        }
+      }
+      n++;
+    }
+    sp = next_sp;
+  }
+  if (min_dropped_frames != nullptr) {
+    // Implementation detail: we clamp the max of frames we are willing to
+    // count, so as not to spend too much time in the loop below.
+    const int kMaxUnwind = 200;
+    int j = 0;
+    for (; sp != nullptr && j < kMaxUnwind; j++) {
+      sp = NextStackFrame<!IS_STACK_FRAMES>(sp);
+    }
+    *min_dropped_frames = j;
+  }
+  return n;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return false;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_ARM_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_config.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_config.h
new file mode 100644
index 0000000..d4e8480
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_config.h	
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2017 The Abseil Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+
+ * Defines ABSL_STACKTRACE_INL_HEADER to the *-inl.h containing
+ * actual unwinder implementation.
+ * This header is "private" to stacktrace.cc.
+ * DO NOT include it into any other files.
+*/
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_CONFIG_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_CONFIG_H_
+
+#if defined(ABSL_STACKTRACE_INL_HEADER)
+#error ABSL_STACKTRACE_INL_HEADER cannot be directly set
+
+#elif defined(_WIN32)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_win32-inl.inc"
+
+#elif defined(__linux__) && !defined(__ANDROID__)
+
+#if !defined(NO_FRAME_POINTER)
+# if defined(__i386__) || defined(__x86_64__)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_x86-inl.inc"
+# elif defined(__ppc__) || defined(__PPC__)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_powerpc-inl.inc"
+# elif defined(__aarch64__)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_aarch64-inl.inc"
+# elif defined(__arm__)
+// Note: When using glibc this may require -funwind-tables to function properly.
+#define ABSL_STACKTRACE_INL_HEADER \
+  "absl/debugging/internal/stacktrace_generic-inl.inc"
+# else
+#define ABSL_STACKTRACE_INL_HEADER \
+   "absl/debugging/internal/stacktrace_unimplemented-inl.inc"
+# endif
+#else  // defined(NO_FRAME_POINTER)
+# if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_generic-inl.inc"
+# elif defined(__ppc__) || defined(__PPC__)
+#define ABSL_STACKTRACE_INL_HEADER \
+    "absl/debugging/internal/stacktrace_generic-inl.inc"
+# else
+#define ABSL_STACKTRACE_INL_HEADER \
+   "absl/debugging/internal/stacktrace_unimplemented-inl.inc"
+# endif
+#endif  // NO_FRAME_POINTER
+
+#else
+#define ABSL_STACKTRACE_INL_HEADER \
+  "absl/debugging/internal/stacktrace_unimplemented-inl.inc"
+
+#endif
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_CONFIG_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_generic-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_generic-inl.inc
new file mode 100644
index 0000000..ac034c9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_generic-inl.inc	
@@ -0,0 +1,99 @@
+// Copyright 2000 - 2007 Google Inc.
+// All rights reserved.
+//
+// Author: Sanjay Ghemawat
+//
+// Portable implementation - just use glibc
+//
+// Note:  The glibc implementation may cause a call to malloc.
+// This can cause a deadlock in HeapProfiler.
+
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
+
+#include <execinfo.h>
+#include <atomic>
+#include <cstring>
+
+#include "absl/debugging/stacktrace.h"
+#include "absl/base/attributes.h"
+
+// Sometimes, we can try to get a stack trace from within a stack
+// trace, because we don't block signals inside this code (which would be too
+// expensive: the two extra system calls per stack trace do matter here).
+// That can cause a self-deadlock.
+// Protect against such reentrant call by failing to get a stack trace.
+//
+// We use __thread here because the code here is extremely low level -- it is
+// called while collecting stack traces from within malloc and mmap, and thus
+// can not call anything which might call malloc or mmap itself.
+static __thread int recursive = 0;
+
+// The stack trace function might be invoked very early in the program's
+// execution (e.g. from the very first malloc if using tcmalloc). Also, the
+// glibc implementation itself will trigger malloc the first time it is called.
+// As such, we suppress usage of backtrace during this early stage of execution.
+static std::atomic<bool> disable_stacktraces(true);  // Disabled until healthy.
+// Waiting until static initializers run seems to be late enough.
+// This file is included into stacktrace.cc so this will only run once.
+ABSL_ATTRIBUTE_UNUSED static int stacktraces_enabler = []() {
+  void* unused_stack[1];
+  // Force the first backtrace to happen early to get the one-time shared lib
+  // loading (allocation) out of the way. After the first call it is much safer
+  // to use backtrace from a signal handler if we crash somewhere later.
+  backtrace(unused_stack, 1);
+  disable_stacktraces.store(false, std::memory_order_relaxed);
+  return 0;
+}();
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
+                      const void *ucp, int *min_dropped_frames) {
+  if (recursive || disable_stacktraces.load(std::memory_order_relaxed)) {
+    return 0;
+  }
+  ++recursive;
+
+  static_cast<void>(ucp);  // Unused.
+  static const int kStackLength = 64;
+  void * stack[kStackLength];
+  int size;
+
+  size = backtrace(stack, kStackLength);
+  skip_count++;  // we want to skip the current frame as well
+  int result_count = size - skip_count;
+  if (result_count < 0)
+    result_count = 0;
+  if (result_count > max_depth)
+    result_count = max_depth;
+  for (int i = 0; i < result_count; i++)
+    result[i] = stack[i + skip_count];
+
+  if (IS_STACK_FRAMES) {
+    // No implementation for finding out the stack frame sizes yet.
+    memset(sizes, 0, sizeof(*sizes) * result_count);
+  }
+  if (min_dropped_frames != nullptr) {
+    if (size - skip_count - max_depth > 0) {
+      *min_dropped_frames = size - skip_count - max_depth;
+    } else {
+      *min_dropped_frames = 0;
+    }
+  }
+
+  --recursive;
+
+  return result_count;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return true;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_powerpc-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_powerpc-inl.inc
new file mode 100644
index 0000000..2e7c2f4
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_powerpc-inl.inc	
@@ -0,0 +1,248 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Produce stack trace.  I'm guessing (hoping!) the code is much like
+// for x86.  For apple machines, at least, it seems to be; see
+//    https://developer.apple.com/documentation/mac/runtimehtml/RTArch-59.html
+//    https://www.linux-foundation.org/spec/ELF/ppc64/PPC-elf64abi-1.9.html#STACK
+// Linux has similar code: http://patchwork.ozlabs.org/linuxppc/patch?id=8882
+
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_POWERPC_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_POWERPC_INL_H_
+
+#if defined(__linux__)
+#include <asm/ptrace.h>   // for PT_NIP.
+#include <ucontext.h>     // for ucontext_t
+#endif
+
+#include <unistd.h>
+#include <cassert>
+#include <cstdint>
+#include <cstdio>
+
+#include "absl/base/attributes.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+#include "absl/debugging/stacktrace.h"
+#include "absl/debugging/internal/address_is_readable.h"
+#include "absl/debugging/internal/vdso_support.h"  // a no-op on non-elf or non-glibc systems
+
+// Given a stack pointer, return the saved link register value.
+// Note that this is the link register for a callee.
+static inline void *StacktracePowerPCGetLR(void **sp) {
+  // PowerPC has 3 main ABIs, which say where in the stack the
+  // Link Register is.  For DARWIN and AIX (used by apple and
+  // linux ppc64), it's in sp[2].  For SYSV (used by linux ppc),
+  // it's in sp[1].
+#if defined(_CALL_AIX) || defined(_CALL_DARWIN)
+  return *(sp+2);
+#elif defined(_CALL_SYSV)
+  return *(sp+1);
+#elif defined(__APPLE__) || defined(__FreeBSD__) || \
+    (defined(__linux__) && defined(__PPC64__))
+  // This check is in case the compiler doesn't define _CALL_AIX/etc.
+  return *(sp+2);
+#elif defined(__linux)
+  // This check is in case the compiler doesn't define _CALL_SYSV.
+  return *(sp+1);
+#else
+#error Need to specify the PPC ABI for your archiecture.
+#endif
+}
+
+// Given a pointer to a stack frame, locate and return the calling
+// stackframe, or return null if no stackframe can be found. Perform sanity
+// checks (the strictness of which is controlled by the boolean parameter
+// "STRICT_UNWINDING") to reduce the chance that a bad pointer is returned.
+template<bool STRICT_UNWINDING, bool IS_WITH_CONTEXT>
+ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS  // May read random elements from stack.
+ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY   // May read random elements from stack.
+static void **NextStackFrame(void **old_sp, const void *uc) {
+  void **new_sp = (void **) *old_sp;
+  enum { kStackAlignment = 16 };
+
+  // Check that the transition from frame pointer old_sp to frame
+  // pointer new_sp isn't clearly bogus
+  if (STRICT_UNWINDING) {
+    // With the stack growing downwards, older stack frame must be
+    // at a greater address that the current one.
+    if (new_sp <= old_sp) return nullptr;
+    // Assume stack frames larger than 100,000 bytes are bogus.
+    if ((uintptr_t)new_sp - (uintptr_t)old_sp > 100000) return nullptr;
+  } else {
+    // In the non-strict mode, allow discontiguous stack frames.
+    // (alternate-signal-stacks for example).
+    if (new_sp == old_sp) return nullptr;
+    // And allow frames upto about 1MB.
+    if ((new_sp > old_sp)
+        && ((uintptr_t)new_sp - (uintptr_t)old_sp > 1000000)) return nullptr;
+  }
+  if ((uintptr_t)new_sp % kStackAlignment != 0) return nullptr;
+
+#if defined(__linux__)
+  enum StackTraceKernelSymbolStatus {
+      kNotInitialized = 0, kAddressValid, kAddressInvalid };
+
+  if (IS_WITH_CONTEXT && uc != nullptr) {
+    static StackTraceKernelSymbolStatus kernel_symbol_status =
+        kNotInitialized;  // Sentinel: not computed yet.
+    // Initialize with sentinel value: __kernel_rt_sigtramp_rt64 can not
+    // possibly be there.
+    static const unsigned char *kernel_sigtramp_rt64_address = nullptr;
+    if (kernel_symbol_status == kNotInitialized) {
+      absl::debugging_internal::VDSOSupport vdso;
+      if (vdso.IsPresent()) {
+        absl::debugging_internal::VDSOSupport::SymbolInfo
+            sigtramp_rt64_symbol_info;
+        if (!vdso.LookupSymbol(
+                "__kernel_sigtramp_rt64", "LINUX_2.6.15",
+                absl::debugging_internal::VDSOSupport::kVDSOSymbolType,
+                &sigtramp_rt64_symbol_info) ||
+            sigtramp_rt64_symbol_info.address == nullptr) {
+          // Unexpected: VDSO is present, yet the expected symbol is missing
+          // or null.
+          assert(false && "VDSO is present, but doesn't have expected symbol");
+          kernel_symbol_status = kAddressInvalid;
+        } else {
+          kernel_sigtramp_rt64_address =
+              reinterpret_cast<const unsigned char *>(
+                  sigtramp_rt64_symbol_info.address);
+          kernel_symbol_status = kAddressValid;
+        }
+      } else {
+        kernel_symbol_status = kAddressInvalid;
+      }
+    }
+
+    if (new_sp != nullptr &&
+        kernel_symbol_status == kAddressValid &&
+        StacktracePowerPCGetLR(new_sp) == kernel_sigtramp_rt64_address) {
+      const ucontext_t* signal_context =
+          reinterpret_cast<const ucontext_t*>(uc);
+      void **const sp_before_signal =
+          reinterpret_cast<void**>(signal_context->uc_mcontext.gp_regs[PT_R1]);
+      // Check that alleged sp before signal is nonnull and is reasonably
+      // aligned.
+      if (sp_before_signal != nullptr &&
+          ((uintptr_t)sp_before_signal % kStackAlignment) == 0) {
+        // Check that alleged stack pointer is actually readable. This is to
+        // prevent a "double fault" in case we hit the first fault due to e.g.
+        // a stack corruption.
+        if (absl::debugging_internal::AddressIsReadable(sp_before_signal)) {
+          // Alleged stack pointer is readable, use it for further unwinding.
+          new_sp = sp_before_signal;
+        }
+      }
+    }
+  }
+#endif
+
+  return new_sp;
+}
+
+// This ensures that absl::GetStackTrace sets up the Link Register properly.
+ABSL_ATTRIBUTE_NOINLINE static void AbslStacktracePowerPCDummyFunction() {
+  ABSL_BLOCK_TAIL_CALL_OPTIMIZATION();
+}
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS  // May read random elements from stack.
+ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY   // May read random elements from stack.
+static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
+                      const void *ucp, int *min_dropped_frames) {
+  void **sp;
+  // Apple macOS uses an old version of gnu as -- both Darwin 7.9.0 (Panther)
+  // and Darwin 8.8.1 (Tiger) use as 1.38.  This means we have to use a
+  // different asm syntax.  I don't know quite the best way to discriminate
+  // systems using the old as from the new one; I've gone with __APPLE__.
+#ifdef __APPLE__
+  __asm__ volatile ("mr %0,r1" : "=r" (sp));
+#else
+  __asm__ volatile ("mr %0,1" : "=r" (sp));
+#endif
+
+  // On PowerPC, the "Link Register" or "Link Record" (LR), is a stack
+  // entry that holds the return address of the subroutine call (what
+  // instruction we run after our function finishes).  This is the
+  // same as the stack-pointer of our parent routine, which is what we
+  // want here.  While the compiler will always(?) set up LR for
+  // subroutine calls, it may not for leaf functions (such as this one).
+  // This routine forces the compiler (at least gcc) to push it anyway.
+  AbslStacktracePowerPCDummyFunction();
+
+  // The LR save area is used by the callee, so the top entry is bogus.
+  skip_count++;
+
+  int n = 0;
+
+  // Unlike ABIs of X86 and ARM, PowerPC ABIs say that return address (in
+  // the link register) of a function call is stored in the caller's stack
+  // frame instead of the callee's.  When we look for the return address
+  // associated with a stack frame, we need to make sure that there is a
+  // caller frame before it.  So we call NextStackFrame before entering the
+  // loop below and check next_sp instead of sp for loop termination.
+  // The outermost frame is set up by runtimes and it does not have a
+  // caller frame, so it is skipped.
+
+  // The absl::GetStackFrames routine is called when we are in some
+  // informational context (the failure signal handler for example).
+  // Use the non-strict unwinding rules to produce a stack trace
+  // that is as complete as possible (even if it contains a few
+  // bogus entries in some rare cases).
+  void **next_sp = NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(sp, ucp);
+
+  while (next_sp && n < max_depth) {
+    if (skip_count > 0) {
+      skip_count--;
+    } else {
+      result[n] = StacktracePowerPCGetLR(sp);
+      if (IS_STACK_FRAMES) {
+        if (next_sp > sp) {
+          sizes[n] = (uintptr_t)next_sp - (uintptr_t)sp;
+        } else {
+          // A frame-size of 0 is used to indicate unknown frame size.
+          sizes[n] = 0;
+        }
+      }
+      n++;
+    }
+
+    sp = next_sp;
+    next_sp = NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(sp, ucp);
+  }
+
+  if (min_dropped_frames != nullptr) {
+    // Implementation detail: we clamp the max of frames we are willing to
+    // count, so as not to spend too much time in the loop below.
+    const int kMaxUnwind = 1000;
+    int j = 0;
+    for (; next_sp != nullptr && j < kMaxUnwind; j++) {
+      next_sp = NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(next_sp, ucp);
+    }
+    *min_dropped_frames = j;
+  }
+  return n;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return true;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_POWERPC_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_unimplemented-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_unimplemented-inl.inc
new file mode 100644
index 0000000..5b8fb19
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_unimplemented-inl.inc	
@@ -0,0 +1,24 @@
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_UNIMPLEMENTED_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_UNIMPLEMENTED_INL_H_
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+static int UnwindImpl(void** /* result */, int* /* sizes */,
+                      int /* max_depth */, int /* skip_count */,
+                      const void* /* ucp */, int *min_dropped_frames) {
+  if (min_dropped_frames != nullptr) {
+    *min_dropped_frames = 0;
+  }
+  return 0;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return false;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_UNIMPLEMENTED_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_win32-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_win32-inl.inc
new file mode 100644
index 0000000..9c2c558
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_win32-inl.inc	
@@ -0,0 +1,85 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Produces a stack trace for Windows.  Normally, one could use
+// stacktrace_x86-inl.h or stacktrace_x86_64-inl.h -- and indeed, that
+// should work for binaries compiled using MSVC in "debug" mode.
+// However, in "release" mode, Windows uses frame-pointer
+// optimization, which makes getting a stack trace very difficult.
+//
+// There are several approaches one can take.  One is to use Windows
+// intrinsics like StackWalk64.  These can work, but have restrictions
+// on how successful they can be.  Another attempt is to write a
+// version of stacktrace_x86-inl.h that has heuristic support for
+// dealing with FPO, similar to what WinDbg does (see
+// http://www.nynaeve.net/?p=97).  There are (non-working) examples of
+// these approaches, complete with TODOs, in stacktrace_win32-inl.h#1
+//
+// The solution we've ended up doing is to call the undocumented
+// windows function RtlCaptureStackBackTrace, which probably doesn't
+// work with FPO but at least is fast, and doesn't require a symbol
+// server.
+//
+// This code is inspired by a patch from David Vitek:
+//   https://code.google.com/p/google-perftools/issues/detail?id=83
+
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_WIN32_INL_H_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_WIN32_INL_H_
+
+#include <windows.h>    // for GetProcAddress and GetModuleHandle
+#include <cassert>
+
+typedef USHORT NTAPI RtlCaptureStackBackTrace_Function(
+    IN ULONG frames_to_skip,
+    IN ULONG frames_to_capture,
+    OUT PVOID *backtrace,
+    OUT PULONG backtrace_hash);
+
+// Load the function we need at static init time, where we don't have
+// to worry about someone else holding the loader's lock.
+static RtlCaptureStackBackTrace_Function* const RtlCaptureStackBackTrace_fn =
+   (RtlCaptureStackBackTrace_Function*)
+   GetProcAddress(GetModuleHandleA("ntdll.dll"), "RtlCaptureStackBackTrace");
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
+                      const void*, int* min_dropped_frames) {
+  int n = 0;
+  if (!RtlCaptureStackBackTrace_fn) {
+    // can't find a stacktrace with no function to call
+  } else {
+    n = (int)RtlCaptureStackBackTrace_fn(skip_count + 2, max_depth, result, 0);
+  }
+  if (IS_STACK_FRAMES) {
+    // No implementation for finding out the stack frame sizes yet.
+    memset(sizes, 0, sizeof(*sizes) * n);
+  }
+  if (min_dropped_frames != nullptr) {
+    // Not implemented.
+    *min_dropped_frames = 0;
+  }
+  return n;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return false;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_WIN32_INL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_x86-inl.inc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_x86-inl.inc
new file mode 100644
index 0000000..bc320ff
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/stacktrace_x86-inl.inc	
@@ -0,0 +1,346 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Produce stack trace
+
+#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_X86_INL_INC_
+#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_X86_INL_INC_
+
+#if defined(__linux__) && (defined(__i386__) || defined(__x86_64__))
+#include <ucontext.h>  // for ucontext_t
+#endif
+
+#if !defined(_WIN32)
+#include <unistd.h>
+#endif
+
+#include <cassert>
+#include <cstdint>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/debugging/internal/address_is_readable.h"
+#include "absl/debugging/internal/vdso_support.h"  // a no-op on non-elf or non-glibc systems
+#include "absl/debugging/stacktrace.h"
+
+#include "absl/base/internal/raw_logging.h"
+
+using absl::debugging_internal::AddressIsReadable;
+
+#if defined(__linux__) && defined(__i386__)
+// Count "push %reg" instructions in VDSO __kernel_vsyscall(),
+// preceeding "syscall" or "sysenter".
+// If __kernel_vsyscall uses frame pointer, answer 0.
+//
+// kMaxBytes tells how many instruction bytes of __kernel_vsyscall
+// to analyze before giving up. Up to kMaxBytes+1 bytes of
+// instructions could be accessed.
+//
+// Here are known __kernel_vsyscall instruction sequences:
+//
+// SYSENTER (linux-2.6.26/arch/x86/vdso/vdso32/sysenter.S).
+// Used on Intel.
+//  0xffffe400 <__kernel_vsyscall+0>:       push   %ecx
+//  0xffffe401 <__kernel_vsyscall+1>:       push   %edx
+//  0xffffe402 <__kernel_vsyscall+2>:       push   %ebp
+//  0xffffe403 <__kernel_vsyscall+3>:       mov    %esp,%ebp
+//  0xffffe405 <__kernel_vsyscall+5>:       sysenter
+//
+// SYSCALL (see linux-2.6.26/arch/x86/vdso/vdso32/syscall.S).
+// Used on AMD.
+//  0xffffe400 <__kernel_vsyscall+0>:       push   %ebp
+//  0xffffe401 <__kernel_vsyscall+1>:       mov    %ecx,%ebp
+//  0xffffe403 <__kernel_vsyscall+3>:       syscall
+//
+
+// The sequence below isn't actually expected in Google fleet,
+// here only for completeness. Remove this comment from OSS release.
+
+// i386 (see linux-2.6.26/arch/x86/vdso/vdso32/int80.S)
+//  0xffffe400 <__kernel_vsyscall+0>:       int $0x80
+//  0xffffe401 <__kernel_vsyscall+1>:       ret
+//
+static const int kMaxBytes = 10;
+
+// We use assert()s instead of DCHECK()s -- this is too low level
+// for DCHECK().
+
+static int CountPushInstructions(const unsigned char *const addr) {
+  int result = 0;
+  for (int i = 0; i < kMaxBytes; ++i) {
+    if (addr[i] == 0x89) {
+      // "mov reg,reg"
+      if (addr[i + 1] == 0xE5) {
+        // Found "mov %esp,%ebp".
+        return 0;
+      }
+      ++i;  // Skip register encoding byte.
+    } else if (addr[i] == 0x0F &&
+               (addr[i + 1] == 0x34 || addr[i + 1] == 0x05)) {
+      // Found "sysenter" or "syscall".
+      return result;
+    } else if ((addr[i] & 0xF0) == 0x50) {
+      // Found "push %reg".
+      ++result;
+    } else if (addr[i] == 0xCD && addr[i + 1] == 0x80) {
+      // Found "int $0x80"
+      assert(result == 0);
+      return 0;
+    } else {
+      // Unexpected instruction.
+      assert(false && "unexpected instruction in __kernel_vsyscall");
+      return 0;
+    }
+  }
+  // Unexpected: didn't find SYSENTER or SYSCALL in
+  // [__kernel_vsyscall, __kernel_vsyscall + kMaxBytes) interval.
+  assert(false && "did not find SYSENTER or SYSCALL in __kernel_vsyscall");
+  return 0;
+}
+#endif
+
+// Assume stack frames larger than 100,000 bytes are bogus.
+static const int kMaxFrameBytes = 100000;
+
+// Returns the stack frame pointer from signal context, 0 if unknown.
+// vuc is a ucontext_t *.  We use void* to avoid the use
+// of ucontext_t on non-POSIX systems.
+static uintptr_t GetFP(const void *vuc) {
+#if !defined(__linux__)
+  static_cast<void>(vuc);  // Avoid an unused argument compiler warning.
+#else
+  if (vuc != nullptr) {
+    auto *uc = reinterpret_cast<const ucontext_t *>(vuc);
+#if defined(__i386__)
+    const auto bp = uc->uc_mcontext.gregs[REG_EBP];
+    const auto sp = uc->uc_mcontext.gregs[REG_ESP];
+#elif defined(__x86_64__)
+    const auto bp = uc->uc_mcontext.gregs[REG_RBP];
+    const auto sp = uc->uc_mcontext.gregs[REG_RSP];
+#else
+    const uintptr_t bp = 0;
+    const uintptr_t sp = 0;
+#endif
+    // Sanity-check that the base pointer is valid.  It should be as long as
+    // SHRINK_WRAP_FRAME_POINTER is not set, but it's possible that some code in
+    // the process is compiled with --copt=-fomit-frame-pointer or
+    // --copt=-momit-leaf-frame-pointer.
+    //
+    // TODO(bcmills): -momit-leaf-frame-pointer is currently the default
+    // behavior when building with clang.  Talk to the C++ toolchain team about
+    // fixing that.
+    if (bp >= sp && bp - sp <= kMaxFrameBytes) return bp;
+
+    // If bp isn't a plausible frame pointer, return the stack pointer instead.
+    // If we're lucky, it points to the start of a stack frame; otherwise, we'll
+    // get one frame of garbage in the stack trace and fail the sanity check on
+    // the next iteration.
+    return sp;
+  }
+#endif
+  return 0;
+}
+
+// Given a pointer to a stack frame, locate and return the calling
+// stackframe, or return null if no stackframe can be found. Perform sanity
+// checks (the strictness of which is controlled by the boolean parameter
+// "STRICT_UNWINDING") to reduce the chance that a bad pointer is returned.
+template <bool STRICT_UNWINDING, bool WITH_CONTEXT>
+ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS  // May read random elements from stack.
+ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY   // May read random elements from stack.
+static void **NextStackFrame(void **old_fp, const void *uc) {
+  void **new_fp = (void **)*old_fp;
+
+#if defined(__linux__) && defined(__i386__)
+  if (WITH_CONTEXT && uc != nullptr) {
+    // How many "push %reg" instructions are there at __kernel_vsyscall?
+    // This is constant for a given kernel and processor, so compute
+    // it only once.
+    static int num_push_instructions = -1;  // Sentinel: not computed yet.
+    // Initialize with sentinel value: __kernel_rt_sigreturn can not possibly
+    // be there.
+    static const unsigned char *kernel_rt_sigreturn_address = nullptr;
+    static const unsigned char *kernel_vsyscall_address = nullptr;
+    if (num_push_instructions == -1) {
+#ifdef ABSL_HAVE_VDSO_SUPPORT
+      absl::debugging_internal::VDSOSupport vdso;
+      if (vdso.IsPresent()) {
+        absl::debugging_internal::VDSOSupport::SymbolInfo
+            rt_sigreturn_symbol_info;
+        absl::debugging_internal::VDSOSupport::SymbolInfo vsyscall_symbol_info;
+        if (!vdso.LookupSymbol("__kernel_rt_sigreturn", "LINUX_2.5", STT_FUNC,
+                               &rt_sigreturn_symbol_info) ||
+            !vdso.LookupSymbol("__kernel_vsyscall", "LINUX_2.5", STT_FUNC,
+                               &vsyscall_symbol_info) ||
+            rt_sigreturn_symbol_info.address == nullptr ||
+            vsyscall_symbol_info.address == nullptr) {
+          // Unexpected: 32-bit VDSO is present, yet one of the expected
+          // symbols is missing or null.
+          assert(false && "VDSO is present, but doesn't have expected symbols");
+          num_push_instructions = 0;
+        } else {
+          kernel_rt_sigreturn_address =
+              reinterpret_cast<const unsigned char *>(
+                  rt_sigreturn_symbol_info.address);
+          kernel_vsyscall_address =
+              reinterpret_cast<const unsigned char *>(
+                  vsyscall_symbol_info.address);
+          num_push_instructions =
+              CountPushInstructions(kernel_vsyscall_address);
+        }
+      } else {
+        num_push_instructions = 0;
+      }
+#else  // ABSL_HAVE_VDSO_SUPPORT
+      num_push_instructions = 0;
+#endif  // ABSL_HAVE_VDSO_SUPPORT
+    }
+    if (num_push_instructions != 0 && kernel_rt_sigreturn_address != nullptr &&
+        old_fp[1] == kernel_rt_sigreturn_address) {
+      const ucontext_t *ucv = static_cast<const ucontext_t *>(uc);
+      // This kernel does not use frame pointer in its VDSO code,
+      // and so %ebp is not suitable for unwinding.
+      void **const reg_ebp =
+          reinterpret_cast<void **>(ucv->uc_mcontext.gregs[REG_EBP]);
+      const unsigned char *const reg_eip =
+          reinterpret_cast<unsigned char *>(ucv->uc_mcontext.gregs[REG_EIP]);
+      if (new_fp == reg_ebp && kernel_vsyscall_address <= reg_eip &&
+          reg_eip - kernel_vsyscall_address < kMaxBytes) {
+        // We "stepped up" to __kernel_vsyscall, but %ebp is not usable.
+        // Restore from 'ucv' instead.
+        void **const reg_esp =
+            reinterpret_cast<void **>(ucv->uc_mcontext.gregs[REG_ESP]);
+        // Check that alleged %esp is not null and is reasonably aligned.
+        if (reg_esp &&
+            ((uintptr_t)reg_esp & (sizeof(reg_esp) - 1)) == 0) {
+          // Check that alleged %esp is actually readable. This is to prevent
+          // "double fault" in case we hit the first fault due to e.g. stack
+          // corruption.
+          void *const reg_esp2 = reg_esp[num_push_instructions - 1];
+          if (AddressIsReadable(reg_esp2)) {
+            // Alleged %esp is readable, use it for further unwinding.
+            new_fp = reinterpret_cast<void **>(reg_esp2);
+          }
+        }
+      }
+    }
+  }
+#endif
+
+  const uintptr_t old_fp_u = reinterpret_cast<uintptr_t>(old_fp);
+  const uintptr_t new_fp_u = reinterpret_cast<uintptr_t>(new_fp);
+
+  // Check that the transition from frame pointer old_fp to frame
+  // pointer new_fp isn't clearly bogus.  Skip the checks if new_fp
+  // matches the signal context, so that we don't skip out early when
+  // using an alternate signal stack.
+  //
+  // TODO(bcmills): The GetFP call should be completely unnecessary when
+  // SHRINK_WRAP_FRAME_POINTER is set (because we should be back in the thread's
+  // stack by this point), but it is empirically still needed (e.g. when the
+  // stack includes a call to abort).  unw_get_reg returns UNW_EBADREG for some
+  // frames.  Figure out why GetValidFrameAddr and/or libunwind isn't doing what
+  // it's supposed to.
+  if (STRICT_UNWINDING &&
+      (!WITH_CONTEXT || uc == nullptr || new_fp_u != GetFP(uc))) {
+    // With the stack growing downwards, older stack frame must be
+    // at a greater address that the current one.
+    if (new_fp_u <= old_fp_u) return nullptr;
+    if (new_fp_u - old_fp_u > kMaxFrameBytes) return nullptr;
+  } else {
+    if (new_fp == nullptr) return nullptr;  // skip AddressIsReadable() below
+    // In the non-strict mode, allow discontiguous stack frames.
+    // (alternate-signal-stacks for example).
+    if (new_fp == old_fp) return nullptr;
+  }
+
+  if (new_fp_u & (sizeof(void *) - 1)) return nullptr;
+#ifdef __i386__
+  // On 32-bit machines, the stack pointer can be very close to
+  // 0xffffffff, so we explicitly check for a pointer into the
+  // last two pages in the address space
+  if (new_fp_u >= 0xffffe000) return nullptr;
+#endif
+#if !defined(_WIN32)
+  if (!STRICT_UNWINDING) {
+    // Lax sanity checks cause a crash in 32-bit tcmalloc/crash_reason_test
+    // on AMD-based machines with VDSO-enabled kernels.
+    // Make an extra sanity check to insure new_fp is readable.
+    // Note: NextStackFrame<false>() is only called while the program
+    //       is already on its last leg, so it's ok to be slow here.
+
+    if (!AddressIsReadable(new_fp)) {
+      return nullptr;
+    }
+  }
+#endif
+  return new_fp;
+}
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+ABSL_ATTRIBUTE_NO_SANITIZE_ADDRESS  // May read random elements from stack.
+ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY   // May read random elements from stack.
+ABSL_ATTRIBUTE_NOINLINE
+static int UnwindImpl(void **result, int *sizes, int max_depth, int skip_count,
+                      const void *ucp, int *min_dropped_frames) {
+  int n = 0;
+  void **fp = reinterpret_cast<void **>(__builtin_frame_address(0));
+
+  while (fp && n < max_depth) {
+    if (*(fp + 1) == reinterpret_cast<void *>(0)) {
+      // In 64-bit code, we often see a frame that
+      // points to itself and has a return address of 0.
+      break;
+    }
+    void **next_fp = NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(fp, ucp);
+    if (skip_count > 0) {
+      skip_count--;
+    } else {
+      result[n] = *(fp + 1);
+      if (IS_STACK_FRAMES) {
+        if (next_fp > fp) {
+          sizes[n] = (uintptr_t)next_fp - (uintptr_t)fp;
+        } else {
+          // A frame-size of 0 is used to indicate unknown frame size.
+          sizes[n] = 0;
+        }
+      }
+      n++;
+    }
+    fp = next_fp;
+  }
+  if (min_dropped_frames != nullptr) {
+    // Implementation detail: we clamp the max of frames we are willing to
+    // count, so as not to spend too much time in the loop below.
+    const int kMaxUnwind = 1000;
+    int j = 0;
+    for (; fp != nullptr && j < kMaxUnwind; j++) {
+      fp = NextStackFrame<!IS_STACK_FRAMES, IS_WITH_CONTEXT>(fp, ucp);
+    }
+    *min_dropped_frames = j;
+  }
+  return n;
+}
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+bool StackTraceWorksForTest() {
+  return true;
+}
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_STACKTRACE_X86_INL_INC_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/symbolize.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/symbolize.h
new file mode 100644
index 0000000..5d0858b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/symbolize.h	
@@ -0,0 +1,128 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file contains internal parts of the Abseil symbolizer.
+// Do not depend on the anything in this file, it may change at anytime.
+
+#ifndef ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
+#define ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
+
+#include <cstddef>
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+#ifdef ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE
+#error ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE cannot be directly set
+#elif defined(__ELF__) && defined(__GLIBC__) && !defined(__native_client__) && \
+    !defined(__asmjs__) && !defined(__wasm__)
+#define ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE 1
+
+#include <elf.h>
+#include <link.h>  // For ElfW() macro.
+#include <functional>
+#include <string>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// Iterates over all sections, invoking callback on each with the section name
+// and the section header.
+//
+// Returns true on success; otherwise returns false in case of errors.
+//
+// This is not async-signal-safe.
+bool ForEachSection(int fd,
+                    const std::function<bool(const std::string& name,
+                                             const ElfW(Shdr) &)>& callback);
+
+// Gets the section header for the given name, if it exists. Returns true on
+// success. Otherwise, returns false.
+bool GetSectionHeaderByName(int fd, const char *name, size_t name_len,
+                            ElfW(Shdr) *out);
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+struct SymbolDecoratorArgs {
+  // The program counter we are getting symbolic name for.
+  const void *pc;
+  // 0 for main executable, load address for shared libraries.
+  ptrdiff_t relocation;
+  // Read-only file descriptor for ELF image covering "pc",
+  // or -1 if no such ELF image exists in /proc/self/maps.
+  int fd;
+  // Output buffer, size.
+  // Note: the buffer may not be empty -- default symbolizer may have already
+  // produced some output, and earlier decorators may have adorned it in
+  // some way. You are free to replace or augment the contents (within the
+  // symbol_buf_size limit).
+  char *const symbol_buf;
+  size_t symbol_buf_size;
+  // Temporary scratch space, size.
+  // Use that space in preference to allocating your own stack buffer to
+  // conserve stack.
+  char *const tmp_buf;
+  size_t tmp_buf_size;
+  // User-provided argument
+  void* arg;
+};
+using SymbolDecorator = void (*)(const SymbolDecoratorArgs *);
+
+// Installs a function-pointer as a decorator. Returns a value less than zero
+// if the system cannot install the decorator. Otherwise, returns a unique
+// identifier corresponding to the decorator. This identifier can be used to
+// uninstall the decorator - See RemoveSymbolDecorator() below.
+int InstallSymbolDecorator(SymbolDecorator decorator, void* arg);
+
+// Removes a previously installed function-pointer decorator. Parameter "ticket"
+// is the return-value from calling InstallSymbolDecorator().
+bool RemoveSymbolDecorator(int ticket);
+
+// Remove all installed decorators.  Returns true if successful, false if
+// symbolization is currently in progress.
+bool RemoveAllSymbolDecorators(void);
+
+// Registers an address range to a file mapping.
+//
+// Preconditions:
+//   start <= end
+//   filename != nullptr
+//
+// Returns true if the file was successfully registered.
+bool RegisterFileMappingHint(
+    const void* start, const void* end, uint64_t offset, const char* filename);
+
+// Looks up the file mapping registered by RegisterFileMappingHint for an
+// address range. If there is one, the file name is stored in *filename and
+// *start and *end are modified to reflect the registered mapping. Returns
+// whether any hint was found.
+bool GetFileMappingHint(const void** start,
+                        const void** end,
+                        uint64_t    *  offset,
+                        const char** filename);
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_INTERNAL_SYMBOLIZE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.cc b/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.cc
new file mode 100644
index 0000000..1e8a78a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.cc	
@@ -0,0 +1,194 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Allow dynamic symbol lookup in the kernel VDSO page.
+//
+// VDSOSupport -- a class representing kernel VDSO (if present).
+
+#include "absl/debugging/internal/vdso_support.h"
+
+#ifdef ABSL_HAVE_VDSO_SUPPORT     // defined in vdso_support.h
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#if __GLIBC_PREREQ(2, 16)  // GLIBC-2.16 implements getauxval.
+#include <sys/auxv.h>
+#endif
+
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/port.h"
+
+#ifndef AT_SYSINFO_EHDR
+#define AT_SYSINFO_EHDR 33  // for crosstoolv10
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+ABSL_CONST_INIT
+std::atomic<const void *> VDSOSupport::vdso_base_(
+    debugging_internal::ElfMemImage::kInvalidBase);
+
+std::atomic<VDSOSupport::GetCpuFn> VDSOSupport::getcpu_fn_(&InitAndGetCPU);
+VDSOSupport::VDSOSupport()
+    // If vdso_base_ is still set to kInvalidBase, we got here
+    // before VDSOSupport::Init has been called. Call it now.
+    : image_(vdso_base_.load(std::memory_order_relaxed) ==
+                     debugging_internal::ElfMemImage::kInvalidBase
+                 ? Init()
+                 : vdso_base_.load(std::memory_order_relaxed)) {}
+
+// NOTE: we can't use GoogleOnceInit() below, because we can be
+// called by tcmalloc, and none of the *once* stuff may be functional yet.
+//
+// In addition, we hope that the VDSOSupportHelper constructor
+// causes this code to run before there are any threads, and before
+// InitGoogle() has executed any chroot or setuid calls.
+//
+// Finally, even if there is a race here, it is harmless, because
+// the operation should be idempotent.
+const void *VDSOSupport::Init() {
+  const auto kInvalidBase = debugging_internal::ElfMemImage::kInvalidBase;
+#if __GLIBC_PREREQ(2, 16)
+  if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
+    errno = 0;
+    const void *const sysinfo_ehdr =
+        reinterpret_cast<const void *>(getauxval(AT_SYSINFO_EHDR));
+    if (errno == 0) {
+      vdso_base_.store(sysinfo_ehdr, std::memory_order_relaxed);
+    }
+  }
+#endif  // __GLIBC_PREREQ(2, 16)
+  if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
+    // Valgrind zaps AT_SYSINFO_EHDR and friends from the auxv[]
+    // on stack, and so glibc works as if VDSO was not present.
+    // But going directly to kernel via /proc/self/auxv below bypasses
+    // Valgrind zapping. So we check for Valgrind separately.
+    if (RunningOnValgrind()) {
+      vdso_base_.store(nullptr, std::memory_order_relaxed);
+      getcpu_fn_.store(&GetCPUViaSyscall, std::memory_order_relaxed);
+      return nullptr;
+    }
+    int fd = open("/proc/self/auxv", O_RDONLY);
+    if (fd == -1) {
+      // Kernel too old to have a VDSO.
+      vdso_base_.store(nullptr, std::memory_order_relaxed);
+      getcpu_fn_.store(&GetCPUViaSyscall, std::memory_order_relaxed);
+      return nullptr;
+    }
+    ElfW(auxv_t) aux;
+    while (read(fd, &aux, sizeof(aux)) == sizeof(aux)) {
+      if (aux.a_type == AT_SYSINFO_EHDR) {
+        vdso_base_.store(reinterpret_cast<void *>(aux.a_un.a_val),
+                         std::memory_order_relaxed);
+        break;
+      }
+    }
+    close(fd);
+    if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
+      // Didn't find AT_SYSINFO_EHDR in auxv[].
+      vdso_base_.store(nullptr, std::memory_order_relaxed);
+    }
+  }
+  GetCpuFn fn = &GetCPUViaSyscall;  // default if VDSO not present.
+  if (vdso_base_.load(std::memory_order_relaxed)) {
+    VDSOSupport vdso;
+    SymbolInfo info;
+    if (vdso.LookupSymbol("__vdso_getcpu", "LINUX_2.6", STT_FUNC, &info)) {
+      fn = reinterpret_cast<GetCpuFn>(const_cast<void *>(info.address));
+    }
+  }
+  // Subtle: this code runs outside of any locks; prevent compiler
+  // from assigning to getcpu_fn_ more than once.
+  getcpu_fn_.store(fn, std::memory_order_relaxed);
+  return vdso_base_.load(std::memory_order_relaxed);
+}
+
+const void *VDSOSupport::SetBase(const void *base) {
+  ABSL_RAW_CHECK(base != debugging_internal::ElfMemImage::kInvalidBase,
+                 "internal error");
+  const void *old_base = vdso_base_.load(std::memory_order_relaxed);
+  vdso_base_.store(base, std::memory_order_relaxed);
+  image_.Init(base);
+  // Also reset getcpu_fn_, so GetCPU could be tested with simulated VDSO.
+  getcpu_fn_.store(&InitAndGetCPU, std::memory_order_relaxed);
+  return old_base;
+}
+
+bool VDSOSupport::LookupSymbol(const char *name,
+                               const char *version,
+                               int type,
+                               SymbolInfo *info) const {
+  return image_.LookupSymbol(name, version, type, info);
+}
+
+bool VDSOSupport::LookupSymbolByAddress(const void *address,
+                                        SymbolInfo *info_out) const {
+  return image_.LookupSymbolByAddress(address, info_out);
+}
+
+// NOLINT on 'long' because this routine mimics kernel api.
+long VDSOSupport::GetCPUViaSyscall(unsigned *cpu,  // NOLINT(runtime/int)
+                                   void *, void *) {
+#ifdef SYS_getcpu
+  return syscall(SYS_getcpu, cpu, nullptr, nullptr);
+#else
+  // x86_64 never implemented sys_getcpu(), except as a VDSO call.
+  static_cast<void>(cpu);  // Avoid an unused argument compiler warning.
+  errno = ENOSYS;
+  return -1;
+#endif
+}
+
+// Use fast __vdso_getcpu if available.
+long VDSOSupport::InitAndGetCPU(unsigned *cpu,  // NOLINT(runtime/int)
+                                void *x, void *y) {
+  Init();
+  GetCpuFn fn = getcpu_fn_.load(std::memory_order_relaxed);
+  ABSL_RAW_CHECK(fn != &InitAndGetCPU, "Init() did not set getcpu_fn_");
+  return (*fn)(cpu, x, y);
+}
+
+// This function must be very fast, and may be called from very
+// low level (e.g. tcmalloc). Hence I avoid things like
+// GoogleOnceInit() and ::operator new.
+ABSL_ATTRIBUTE_NO_SANITIZE_MEMORY
+int GetCPU() {
+  unsigned cpu;
+  int ret_code = (*VDSOSupport::getcpu_fn_)(&cpu, nullptr, nullptr);
+  return ret_code == 0 ? cpu : ret_code;
+}
+
+// We need to make sure VDSOSupport::Init() is called before
+// InitGoogle() does any setuid or chroot calls.  If VDSOSupport
+// is used in any global constructor, this will happen, since
+// VDSOSupport's constructor calls Init.  But if not, we need to
+// ensure it here, with a global constructor of our own.  This
+// is an allowed exception to the normal rule against non-trivial
+// global constructors.
+static class VDSOInitHelper {
+ public:
+  VDSOInitHelper() { VDSOSupport::Init(); }
+} vdso_init_helper;
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HAVE_VDSO_SUPPORT
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.h b/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.h
new file mode 100644
index 0000000..6562c6c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/internal/vdso_support.h	
@@ -0,0 +1,158 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// Allow dynamic symbol lookup in the kernel VDSO page.
+//
+// VDSO stands for "Virtual Dynamic Shared Object" -- a page of
+// executable code, which looks like a shared library, but doesn't
+// necessarily exist anywhere on disk, and which gets mmap()ed into
+// every process by kernels which support VDSO, such as 2.6.x for 32-bit
+// executables, and 2.6.24 and above for 64-bit executables.
+//
+// More details could be found here:
+// http://www.trilithium.com/johan/2005/08/linux-gate/
+//
+// VDSOSupport -- a class representing kernel VDSO (if present).
+//
+// Example usage:
+//  VDSOSupport vdso;
+//  VDSOSupport::SymbolInfo info;
+//  typedef (*FN)(unsigned *, void *, void *);
+//  FN fn = nullptr;
+//  if (vdso.LookupSymbol("__vdso_getcpu", "LINUX_2.6", STT_FUNC, &info)) {
+//     fn = reinterpret_cast<FN>(info.address);
+//  }
+
+#ifndef ABSL_DEBUGGING_INTERNAL_VDSO_SUPPORT_H_
+#define ABSL_DEBUGGING_INTERNAL_VDSO_SUPPORT_H_
+
+#include <atomic>
+
+#include "absl/base/attributes.h"
+#include "absl/debugging/internal/elf_mem_image.h"
+
+#ifdef ABSL_HAVE_ELF_MEM_IMAGE
+
+#ifdef ABSL_HAVE_VDSO_SUPPORT
+#error ABSL_HAVE_VDSO_SUPPORT cannot be directly set
+#else
+#define ABSL_HAVE_VDSO_SUPPORT 1
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace debugging_internal {
+
+// NOTE: this class may be used from within tcmalloc, and can not
+// use any memory allocation routines.
+class VDSOSupport {
+ public:
+  VDSOSupport();
+
+  typedef ElfMemImage::SymbolInfo SymbolInfo;
+  typedef ElfMemImage::SymbolIterator SymbolIterator;
+
+  // On PowerPC64 VDSO symbols can either be of type STT_FUNC or STT_NOTYPE
+  // depending on how the kernel is built.  The kernel is normally built with
+  // STT_NOTYPE type VDSO symbols.  Let's make things simpler first by using a
+  // compile-time constant.
+#ifdef __powerpc64__
+  enum { kVDSOSymbolType = STT_NOTYPE };
+#else
+  enum { kVDSOSymbolType = STT_FUNC };
+#endif
+
+  // Answers whether we have a vdso at all.
+  bool IsPresent() const { return image_.IsPresent(); }
+
+  // Allow to iterate over all VDSO symbols.
+  SymbolIterator begin() const { return image_.begin(); }
+  SymbolIterator end() const { return image_.end(); }
+
+  // Look up versioned dynamic symbol in the kernel VDSO.
+  // Returns false if VDSO is not present, or doesn't contain given
+  // symbol/version/type combination.
+  // If info_out != nullptr, additional details are filled in.
+  bool LookupSymbol(const char *name, const char *version,
+                    int symbol_type, SymbolInfo *info_out) const;
+
+  // Find info about symbol (if any) which overlaps given address.
+  // Returns true if symbol was found; false if VDSO isn't present
+  // or doesn't have a symbol overlapping given address.
+  // If info_out != nullptr, additional details are filled in.
+  bool LookupSymbolByAddress(const void *address, SymbolInfo *info_out) const;
+
+  // Used only for testing. Replace real VDSO base with a mock.
+  // Returns previous value of vdso_base_. After you are done testing,
+  // you are expected to call SetBase() with previous value, in order to
+  // reset state to the way it was.
+  const void *SetBase(const void *s);
+
+  // Computes vdso_base_ and returns it. Should be called as early as
+  // possible; before any thread creation, chroot or setuid.
+  static const void *Init();
+
+ private:
+  // image_ represents VDSO ELF image in memory.
+  // image_.ehdr_ == nullptr implies there is no VDSO.
+  ElfMemImage image_;
+
+  // Cached value of auxv AT_SYSINFO_EHDR, computed once.
+  // This is a tri-state:
+  //   kInvalidBase   => value hasn't been determined yet.
+  //              0   => there is no VDSO.
+  //           else   => vma of VDSO Elf{32,64}_Ehdr.
+  //
+  // When testing with mock VDSO, low bit is set.
+  // The low bit is always available because vdso_base_ is
+  // page-aligned.
+  static std::atomic<const void *> vdso_base_;
+
+  // NOLINT on 'long' because these routines mimic kernel api.
+  // The 'cache' parameter may be used by some versions of the kernel,
+  // and should be nullptr or point to a static buffer containing at
+  // least two 'long's.
+  static long InitAndGetCPU(unsigned *cpu, void *cache,     // NOLINT 'long'.
+                            void *unused);
+  static long GetCPUViaSyscall(unsigned *cpu, void *cache,  // NOLINT 'long'.
+                               void *unused);
+  typedef long (*GetCpuFn)(unsigned *cpu, void *cache,      // NOLINT 'long'.
+                           void *unused);
+
+  // This function pointer may point to InitAndGetCPU,
+  // GetCPUViaSyscall, or __vdso_getcpu at different stages of initialization.
+  ABSL_CONST_INIT static std::atomic<GetCpuFn> getcpu_fn_;
+
+  friend int GetCPU(void);  // Needs access to getcpu_fn_.
+
+  VDSOSupport(const VDSOSupport&) = delete;
+  VDSOSupport& operator=(const VDSOSupport&) = delete;
+};
+
+// Same as sched_getcpu() on later glibc versions.
+// Return current CPU, using (fast) __vdso_getcpu@LINUX_2.6 if present,
+// otherwise use syscall(SYS_getcpu,...).
+// May return -1 with errno == ENOSYS if the kernel doesn't
+// support SYS_getcpu.
+int GetCPU();
+
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HAVE_ELF_MEM_IMAGE
+
+#endif  // ABSL_DEBUGGING_INTERNAL_VDSO_SUPPORT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.cc b/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.cc
new file mode 100644
index 0000000..1f7c7d8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.cc	
@@ -0,0 +1,140 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Produce stack trace.
+//
+// There are three different ways we can try to get the stack trace:
+//
+// 1) Our hand-coded stack-unwinder.  This depends on a certain stack
+//    layout, which is used by gcc (and those systems using a
+//    gcc-compatible ABI) on x86 systems, at least since gcc 2.95.
+//    It uses the frame pointer to do its work.
+//
+// 2) The libunwind library.  This is still in development, and as a
+//    separate library adds a new dependency, but doesn't need a frame
+//    pointer.  It also doesn't call malloc.
+//
+// 3) The gdb unwinder -- also the one used by the c++ exception code.
+//    It's obviously well-tested, but has a fatal flaw: it can call
+//    malloc() from the unwinder.  This is a problem because we're
+//    trying to use the unwinder to instrument malloc().
+//
+// Note: if you add a new implementation here, make sure it works
+// correctly when absl::GetStackTrace() is called with max_depth == 0.
+// Some code may do that.
+
+#include "absl/debugging/stacktrace.h"
+
+#include <atomic>
+
+#include "absl/base/attributes.h"
+#include "absl/base/port.h"
+#include "absl/debugging/internal/stacktrace_config.h"
+
+#if defined(ABSL_STACKTRACE_INL_HEADER)
+#include ABSL_STACKTRACE_INL_HEADER
+#else
+# error Cannot calculate stack trace: will need to write for your environment
+
+# include "absl/debugging/internal/stacktrace_aarch64-inl.inc"
+# include "absl/debugging/internal/stacktrace_arm-inl.inc"
+# include "absl/debugging/internal/stacktrace_generic-inl.inc"
+# include "absl/debugging/internal/stacktrace_powerpc-inl.inc"
+# include "absl/debugging/internal/stacktrace_unimplemented-inl.inc"
+# include "absl/debugging/internal/stacktrace_win32-inl.inc"
+# include "absl/debugging/internal/stacktrace_x86-inl.inc"
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+typedef int (*Unwinder)(void**, int*, int, int, const void*, int*);
+std::atomic<Unwinder> custom;
+
+template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
+ABSL_ATTRIBUTE_ALWAYS_INLINE inline int Unwind(void** result, int* sizes,
+                                               int max_depth, int skip_count,
+                                               const void* uc,
+                                               int* min_dropped_frames) {
+  Unwinder f = &UnwindImpl<IS_STACK_FRAMES, IS_WITH_CONTEXT>;
+  Unwinder g = custom.load(std::memory_order_acquire);
+  if (g != nullptr) f = g;
+
+  // Add 1 to skip count for the unwinder function itself
+  int size = (*f)(result, sizes, max_depth, skip_count + 1, uc,
+                  min_dropped_frames);
+  // To disable tail call to (*f)(...)
+  ABSL_BLOCK_TAIL_CALL_OPTIMIZATION();
+  return size;
+}
+
+}  // anonymous namespace
+
+ABSL_ATTRIBUTE_NOINLINE ABSL_ATTRIBUTE_NO_TAIL_CALL int GetStackFrames(
+    void** result, int* sizes, int max_depth, int skip_count) {
+  return Unwind<true, false>(result, sizes, max_depth, skip_count, nullptr,
+                             nullptr);
+}
+
+ABSL_ATTRIBUTE_NOINLINE ABSL_ATTRIBUTE_NO_TAIL_CALL int
+GetStackFramesWithContext(void** result, int* sizes, int max_depth,
+                          int skip_count, const void* uc,
+                          int* min_dropped_frames) {
+  return Unwind<true, true>(result, sizes, max_depth, skip_count, uc,
+                            min_dropped_frames);
+}
+
+ABSL_ATTRIBUTE_NOINLINE ABSL_ATTRIBUTE_NO_TAIL_CALL int GetStackTrace(
+    void** result, int max_depth, int skip_count) {
+  return Unwind<false, false>(result, nullptr, max_depth, skip_count, nullptr,
+                              nullptr);
+}
+
+ABSL_ATTRIBUTE_NOINLINE ABSL_ATTRIBUTE_NO_TAIL_CALL int
+GetStackTraceWithContext(void** result, int max_depth, int skip_count,
+                         const void* uc, int* min_dropped_frames) {
+  return Unwind<false, true>(result, nullptr, max_depth, skip_count, uc,
+                             min_dropped_frames);
+}
+
+void SetStackUnwinder(Unwinder w) {
+  custom.store(w, std::memory_order_release);
+}
+
+int DefaultStackUnwinder(void** pcs, int* sizes, int depth, int skip,
+                         const void* uc, int* min_dropped_frames) {
+  skip++;  // For this function
+  Unwinder f = nullptr;
+  if (sizes == nullptr) {
+    if (uc == nullptr) {
+      f = &UnwindImpl<false, false>;
+    } else {
+      f = &UnwindImpl<false, true>;
+    }
+  } else {
+    if (uc == nullptr) {
+      f = &UnwindImpl<true, false>;
+    } else {
+      f = &UnwindImpl<true, true>;
+    }
+  }
+  volatile int x = 0;
+  int n = (*f)(pcs, sizes, depth, skip, uc, min_dropped_frames);
+  x = 1; (void) x;  // To disable tail call to (*f)(...)
+  return n;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.h b/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.h
new file mode 100644
index 0000000..0ec0ffd
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/stacktrace.h	
@@ -0,0 +1,231 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: stacktrace.h
+// -----------------------------------------------------------------------------
+//
+// This file contains routines to extract the current stack trace and associated
+// stack frames. These functions are thread-safe and async-signal-safe.
+//
+// Note that stack trace functionality is platform dependent and requires
+// additional support from the compiler/build system in most cases. (That is,
+// this functionality generally only works on platforms/builds that have been
+// specifically configured to support it.)
+//
+// Note: stack traces in Abseil that do not utilize a symbolizer will result in
+// frames consisting of function addresses rather than human-readable function
+// names. (See symbolize.h for information on symbolizing these values.)
+
+#ifndef ABSL_DEBUGGING_STACKTRACE_H_
+#define ABSL_DEBUGGING_STACKTRACE_H_
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// GetStackFrames()
+//
+// Records program counter values for up to `max_depth` frames, skipping the
+// most recent `skip_count` stack frames, stores their corresponding values
+// and sizes in `results` and `sizes` buffers, and returns the number of frames
+// stored. (Note that the frame generated for the `absl::GetStackFrames()`
+// routine itself is also skipped.)
+//
+// Example:
+//
+//      main() { foo(); }
+//      foo() { bar(); }
+//      bar() {
+//        void* result[10];
+//        int sizes[10];
+//        int depth = absl::GetStackFrames(result, sizes, 10, 1);
+//      }
+//
+// The current stack frame would consist of three function calls: `bar()`,
+// `foo()`, and then `main()`; however, since the `GetStackFrames()` call sets
+// `skip_count` to `1`, it will skip the frame for `bar()`, the most recently
+// invoked function call. It will therefore return 2 and fill `result` with
+// program counters within the following functions:
+//
+//      result[0]       foo()
+//      result[1]       main()
+//
+// (Note: in practice, a few more entries after `main()` may be added to account
+// for startup processes.)
+//
+// Corresponding stack frame sizes will also be recorded:
+//
+//    sizes[0]       16
+//    sizes[1]       16
+//
+// (Stack frame sizes of `16` above are just for illustration purposes.)
+//
+// Stack frame sizes of 0 or less indicate that those frame sizes couldn't
+// be identified.
+//
+// This routine may return fewer stack frame entries than are
+// available. Also note that `result` and `sizes` must both be non-null.
+extern int GetStackFrames(void** result, int* sizes, int max_depth,
+                          int skip_count);
+
+// GetStackFramesWithContext()
+//
+// Records program counter values obtained from a signal handler. Records
+// program counter values for up to `max_depth` frames, skipping the most recent
+// `skip_count` stack frames, stores their corresponding values and sizes in
+// `results` and `sizes` buffers, and returns the number of frames stored. (Note
+// that the frame generated for the `absl::GetStackFramesWithContext()` routine
+// itself is also skipped.)
+//
+// The `uc` parameter, if non-null, should be a pointer to a `ucontext_t` value
+// passed to a signal handler registered via the `sa_sigaction` field of a
+// `sigaction` struct. (See
+// http://man7.org/linux/man-pages/man2/sigaction.2.html.) The `uc` value may
+// help a stack unwinder to provide a better stack trace under certain
+// conditions. `uc` may safely be null.
+//
+// The `min_dropped_frames` output parameter, if non-null, points to the
+// location to note any dropped stack frames, if any, due to buffer limitations
+// or other reasons. (This value will be set to `0` if no frames were dropped.)
+// The number of total stack frames is guaranteed to be >= skip_count +
+// max_depth + *min_dropped_frames.
+extern int GetStackFramesWithContext(void** result, int* sizes, int max_depth,
+                                     int skip_count, const void* uc,
+                                     int* min_dropped_frames);
+
+// GetStackTrace()
+//
+// Records program counter values for up to `max_depth` frames, skipping the
+// most recent `skip_count` stack frames, stores their corresponding values
+// in `results`, and returns the number of frames
+// stored. Note that this function is similar to `absl::GetStackFrames()`
+// except that it returns the stack trace only, and not stack frame sizes.
+//
+// Example:
+//
+//      main() { foo(); }
+//      foo() { bar(); }
+//      bar() {
+//        void* result[10];
+//        int depth = absl::GetStackTrace(result, 10, 1);
+//      }
+//
+// This produces:
+//
+//      result[0]       foo
+//      result[1]       main
+//           ....       ...
+//
+// `result` must not be null.
+extern int GetStackTrace(void** result, int max_depth, int skip_count);
+
+// GetStackTraceWithContext()
+//
+// Records program counter values obtained from a signal handler. Records
+// program counter values for up to `max_depth` frames, skipping the most recent
+// `skip_count` stack frames, stores their corresponding values in `results`,
+// and returns the number of frames stored. (Note that the frame generated for
+// the `absl::GetStackFramesWithContext()` routine itself is also skipped.)
+//
+// The `uc` parameter, if non-null, should be a pointer to a `ucontext_t` value
+// passed to a signal handler registered via the `sa_sigaction` field of a
+// `sigaction` struct. (See
+// http://man7.org/linux/man-pages/man2/sigaction.2.html.) The `uc` value may
+// help a stack unwinder to provide a better stack trace under certain
+// conditions. `uc` may safely be null.
+//
+// The `min_dropped_frames` output parameter, if non-null, points to the
+// location to note any dropped stack frames, if any, due to buffer limitations
+// or other reasons. (This value will be set to `0` if no frames were dropped.)
+// The number of total stack frames is guaranteed to be >= skip_count +
+// max_depth + *min_dropped_frames.
+extern int GetStackTraceWithContext(void** result, int max_depth,
+                                    int skip_count, const void* uc,
+                                    int* min_dropped_frames);
+
+// SetStackUnwinder()
+//
+// Provides a custom function for unwinding stack frames that will be used in
+// place of the default stack unwinder when invoking the static
+// GetStack{Frames,Trace}{,WithContext}() functions above.
+//
+// The arguments passed to the unwinder function will match the
+// arguments passed to `absl::GetStackFramesWithContext()` except that sizes
+// will be non-null iff the caller is interested in frame sizes.
+//
+// If unwinder is set to null, we revert to the default stack-tracing behavior.
+//
+// *****************************************************************************
+// WARNING
+// *****************************************************************************
+//
+// absl::SetStackUnwinder is not suitable for general purpose use.  It is
+// provided for custom runtimes.
+// Some things to watch out for when calling `absl::SetStackUnwinder()`:
+//
+// (a) The unwinder may be called from within signal handlers and
+// therefore must be async-signal-safe.
+//
+// (b) Even after a custom stack unwinder has been unregistered, other
+// threads may still be in the process of using that unwinder.
+// Therefore do not clean up any state that may be needed by an old
+// unwinder.
+// *****************************************************************************
+extern void SetStackUnwinder(int (*unwinder)(void** pcs, int* sizes,
+                                             int max_depth, int skip_count,
+                                             const void* uc,
+                                             int* min_dropped_frames));
+
+// DefaultStackUnwinder()
+//
+// Records program counter values of up to `max_depth` frames, skipping the most
+// recent `skip_count` stack frames, and stores their corresponding values in
+// `pcs`. (Note that the frame generated for this call itself is also skipped.)
+// This function acts as a generic stack-unwinder; prefer usage of the more
+// specific `GetStack{Trace,Frames}{,WithContext}()` functions above.
+//
+// If you have set your own stack unwinder (with the `SetStackUnwinder()`
+// function above, you can still get the default stack unwinder by calling
+// `DefaultStackUnwinder()`, which will ignore any previously set stack unwinder
+// and use the default one instead.
+//
+// Because this function is generic, only `pcs` is guaranteed to be non-null
+// upon return. It is legal for `sizes`, `uc`, and `min_dropped_frames` to all
+// be null when called.
+//
+// The semantics are the same as the corresponding `GetStack*()` function in the
+// case where `absl::SetStackUnwinder()` was never called. Equivalents are:
+//
+//                       null sizes         |        non-nullptr sizes
+//             |==========================================================|
+//     null uc | GetStackTrace()            | GetStackFrames()            |
+// non-null uc | GetStackTraceWithContext() | GetStackFramesWithContext() |
+//             |==========================================================|
+extern int DefaultStackUnwinder(void** pcs, int* sizes, int max_depth,
+                                int skip_count, const void* uc,
+                                int* min_dropped_frames);
+
+namespace debugging_internal {
+// Returns true for platforms which are expected to have functioning stack trace
+// implementations. Intended to be used for tests which want to exclude
+// verification of logic known to be broken because stack traces are not
+// working.
+extern bool StackTraceWorksForTest();
+}  // namespace debugging_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_STACKTRACE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.cc b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.cc
new file mode 100644
index 0000000..54ed970
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.cc	
@@ -0,0 +1,25 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/debugging/symbolize.h"
+
+#if defined(ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE)
+#include "absl/debugging/symbolize_elf.inc"
+#elif defined(_WIN32)
+// The Windows Symbolizer only works if PDB files containing the debug info
+// are available to the program at runtime.
+#include "absl/debugging/symbolize_win32.inc"
+#else
+#include "absl/debugging/symbolize_unimplemented.inc"
+#endif
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.h b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.h
new file mode 100644
index 0000000..43d93a8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize.h	
@@ -0,0 +1,99 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: symbolize.h
+// -----------------------------------------------------------------------------
+//
+// This file configures the Abseil symbolizer for use in converting instruction
+// pointer addresses (program counters) into human-readable names (function
+// calls, etc.) within Abseil code.
+//
+// The symbolizer may be invoked from several sources:
+//
+//   * Implicitly, through the installation of an Abseil failure signal handler.
+//     (See failure_signal_handler.h for more information.)
+//   * By calling `Symbolize()` directly on a program counter you obtain through
+//     `absl::GetStackTrace()` or `absl::GetStackFrames()`. (See stacktrace.h
+//     for more information.
+//   * By calling `Symbolize()` directly on a program counter you obtain through
+//     other means (which would be platform-dependent).
+//
+// In all of the above cases, the symbolizer must first be initialized before
+// any program counter values can be symbolized. If you are installing a failure
+// signal handler, initialize the symbolizer before you do so.
+//
+// Example:
+//
+//   int main(int argc, char** argv) {
+//     // Initialize the Symbolizer before installing the failure signal handler
+//     absl::InitializeSymbolizer(argv[0]);
+//
+//     // Now you may install the failure signal handler
+//     absl::FailureSignalHandlerOptions options;
+//     absl::InstallFailureSignalHandler(options);
+//
+//     // Start running your main program
+//     ...
+//     return 0;
+//  }
+//
+#ifndef ABSL_DEBUGGING_SYMBOLIZE_H_
+#define ABSL_DEBUGGING_SYMBOLIZE_H_
+
+#include "absl/debugging/internal/symbolize.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// InitializeSymbolizer()
+//
+// Initializes the program counter symbolizer, given the path of the program
+// (typically obtained through `main()`s `argv[0]`). The Abseil symbolizer
+// allows you to read program counters (instruction pointer values) using their
+// human-readable names within output such as stack traces.
+//
+// Example:
+//
+// int main(int argc, char *argv[]) {
+//   absl::InitializeSymbolizer(argv[0]);
+//   // Now you can use the symbolizer
+// }
+void InitializeSymbolizer(const char* argv0);
+//
+// Symbolize()
+//
+// Symbolizes a program counter (instruction pointer value) `pc` and, on
+// success, writes the name to `out`. The symbol name is demangled, if possible.
+// Note that the symbolized name may be truncated and will be NUL-terminated.
+// Demangling is supported for symbols generated by GCC 3.x or newer). Returns
+// `false` on failure.
+//
+// Example:
+//
+//   // Print a program counter and its symbol name.
+//   static void DumpPCAndSymbol(void *pc) {
+//     char tmp[1024];
+//     const char *symbol = "(unknown)";
+//     if (absl::Symbolize(pc, tmp, sizeof(tmp))) {
+//       symbol = tmp;
+//     }
+//     absl::PrintF("%p  %s\n", pc, symbol);
+//  }
+bool Symbolize(const void *pc, char *out, int out_size);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_DEBUGGING_SYMBOLIZE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_elf.inc b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_elf.inc
new file mode 100644
index 0000000..c371635
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_elf.inc	
@@ -0,0 +1,1480 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This library provides Symbolize() function that symbolizes program
+// counters to their corresponding symbol names on linux platforms.
+// This library has a minimal implementation of an ELF symbol table
+// reader (i.e. it doesn't depend on libelf, etc.).
+//
+// The algorithm used in Symbolize() is as follows.
+//
+//   1. Go through a list of maps in /proc/self/maps and find the map
+//   containing the program counter.
+//
+//   2. Open the mapped file and find a regular symbol table inside.
+//   Iterate over symbols in the symbol table and look for the symbol
+//   containing the program counter.  If such a symbol is found,
+//   obtain the symbol name, and demangle the symbol if possible.
+//   If the symbol isn't found in the regular symbol table (binary is
+//   stripped), try the same thing with a dynamic symbol table.
+//
+// Note that Symbolize() is originally implemented to be used in
+// signal handlers, hence it doesn't use malloc() and other unsafe
+// operations.  It should be both thread-safe and async-signal-safe.
+//
+// Implementation note:
+//
+// We don't use heaps but only use stacks.  We want to reduce the
+// stack consumption so that the symbolizer can run on small stacks.
+//
+// Here are some numbers collected with GCC 4.1.0 on x86:
+// - sizeof(Elf32_Sym)  = 16
+// - sizeof(Elf32_Shdr) = 40
+// - sizeof(Elf64_Sym)  = 24
+// - sizeof(Elf64_Shdr) = 64
+//
+// This implementation is intended to be async-signal-safe but uses some
+// functions which are not guaranteed to be so, such as memchr() and
+// memmove().  We assume they are async-signal-safe.
+
+#include <dlfcn.h>
+#include <elf.h>
+#include <fcntl.h>
+#include <link.h>  // For ElfW() macro.
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <atomic>
+#include <cerrno>
+#include <cinttypes>
+#include <climits>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+#include "absl/base/casts.h"
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/low_level_alloc.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+#include "absl/base/port.h"
+#include "absl/debugging/internal/demangle.h"
+#include "absl/debugging/internal/vdso_support.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Value of argv[0]. Used by MaybeInitializeObjFile().
+static char *argv0_value = nullptr;
+
+void InitializeSymbolizer(const char *argv0) {
+  if (argv0_value != nullptr) {
+    free(argv0_value);
+    argv0_value = nullptr;
+  }
+  if (argv0 != nullptr && argv0[0] != '\0') {
+    argv0_value = strdup(argv0);
+  }
+}
+
+namespace debugging_internal {
+namespace {
+
+// Re-runs fn until it doesn't cause EINTR.
+#define NO_INTR(fn) \
+  do {              \
+  } while ((fn) < 0 && errno == EINTR)
+
+// On Linux, ELF_ST_* are defined in <linux/elf.h>.  To make this portable
+// we define our own ELF_ST_BIND and ELF_ST_TYPE if not available.
+#ifndef ELF_ST_BIND
+#define ELF_ST_BIND(info) (((unsigned char)(info)) >> 4)
+#endif
+
+#ifndef ELF_ST_TYPE
+#define ELF_ST_TYPE(info) (((unsigned char)(info)) & 0xF)
+#endif
+
+// Some platforms use a special .opd section to store function pointers.
+const char kOpdSectionName[] = ".opd";
+
+#if (defined(__powerpc__) && !(_CALL_ELF > 1)) || defined(__ia64)
+// Use opd section for function descriptors on these platforms, the function
+// address is the first word of the descriptor.
+enum { kPlatformUsesOPDSections = 1 };
+#else  // not PPC or IA64
+enum { kPlatformUsesOPDSections = 0 };
+#endif
+
+// This works for PowerPC & IA64 only.  A function descriptor consist of two
+// pointers and the first one is the function's entry.
+const size_t kFunctionDescriptorSize = sizeof(void *) * 2;
+
+const int kMaxDecorators = 10;  // Seems like a reasonable upper limit.
+
+struct InstalledSymbolDecorator {
+  SymbolDecorator fn;
+  void *arg;
+  int ticket;
+};
+
+int g_num_decorators;
+InstalledSymbolDecorator g_decorators[kMaxDecorators];
+
+struct FileMappingHint {
+  const void *start;
+  const void *end;
+  uint64_t offset;
+  const char *filename;
+};
+
+// Protects g_decorators.
+// We are using SpinLock and not a Mutex here, because we may be called
+// from inside Mutex::Lock itself, and it prohibits recursive calls.
+// This happens in e.g. base/stacktrace_syscall_unittest.
+// Moreover, we are using only TryLock(), if the decorator list
+// is being modified (is busy), we skip all decorators, and possibly
+// loose some info. Sorry, that's the best we could do.
+base_internal::SpinLock g_decorators_mu(base_internal::kLinkerInitialized);
+
+const int kMaxFileMappingHints = 8;
+int g_num_file_mapping_hints;
+FileMappingHint g_file_mapping_hints[kMaxFileMappingHints];
+// Protects g_file_mapping_hints.
+base_internal::SpinLock g_file_mapping_mu(base_internal::kLinkerInitialized);
+
+// Async-signal-safe function to zero a buffer.
+// memset() is not guaranteed to be async-signal-safe.
+static void SafeMemZero(void* p, size_t size) {
+  unsigned char *c = static_cast<unsigned char *>(p);
+  while (size--) {
+    *c++ = 0;
+  }
+}
+
+struct ObjFile {
+  ObjFile()
+      : filename(nullptr),
+        start_addr(nullptr),
+        end_addr(nullptr),
+        offset(0),
+        fd(-1),
+        elf_type(-1) {
+    SafeMemZero(&elf_header, sizeof(elf_header));
+  }
+
+  char *filename;
+  const void *start_addr;
+  const void *end_addr;
+  uint64_t offset;
+
+  // The following fields are initialized on the first access to the
+  // object file.
+  int fd;
+  int elf_type;
+  ElfW(Ehdr) elf_header;
+};
+
+// Build 4-way associative cache for symbols. Within each cache line, symbols
+// are replaced in LRU order.
+enum {
+  ASSOCIATIVITY = 4,
+};
+struct SymbolCacheLine {
+  const void *pc[ASSOCIATIVITY];
+  char *name[ASSOCIATIVITY];
+
+  // age[i] is incremented when a line is accessed. it's reset to zero if the
+  // i'th entry is read.
+  uint32_t age[ASSOCIATIVITY];
+};
+
+// ---------------------------------------------------------------
+// An async-signal-safe arena for LowLevelAlloc
+static std::atomic<base_internal::LowLevelAlloc::Arena *> g_sig_safe_arena;
+
+static base_internal::LowLevelAlloc::Arena *SigSafeArena() {
+  return g_sig_safe_arena.load(std::memory_order_acquire);
+}
+
+static void InitSigSafeArena() {
+  if (SigSafeArena() == nullptr) {
+    base_internal::LowLevelAlloc::Arena *new_arena =
+        base_internal::LowLevelAlloc::NewArena(
+            base_internal::LowLevelAlloc::kAsyncSignalSafe);
+    base_internal::LowLevelAlloc::Arena *old_value = nullptr;
+    if (!g_sig_safe_arena.compare_exchange_strong(old_value, new_arena,
+                                                  std::memory_order_release,
+                                                  std::memory_order_relaxed)) {
+      // We lost a race to allocate an arena; deallocate.
+      base_internal::LowLevelAlloc::DeleteArena(new_arena);
+    }
+  }
+}
+
+// ---------------------------------------------------------------
+// An AddrMap is a vector of ObjFile, using SigSafeArena() for allocation.
+
+class AddrMap {
+ public:
+  AddrMap() : size_(0), allocated_(0), obj_(nullptr) {}
+  ~AddrMap() { base_internal::LowLevelAlloc::Free(obj_); }
+  int Size() const { return size_; }
+  ObjFile *At(int i) { return &obj_[i]; }
+  ObjFile *Add();
+  void Clear();
+
+ private:
+  int size_;       // count of valid elements (<= allocated_)
+  int allocated_;  // count of allocated elements
+  ObjFile *obj_;   // array of allocated_ elements
+  AddrMap(const AddrMap &) = delete;
+  AddrMap &operator=(const AddrMap &) = delete;
+};
+
+void AddrMap::Clear() {
+  for (int i = 0; i != size_; i++) {
+    At(i)->~ObjFile();
+  }
+  size_ = 0;
+}
+
+ObjFile *AddrMap::Add() {
+  if (size_ == allocated_) {
+    int new_allocated = allocated_ * 2 + 50;
+    ObjFile *new_obj_ =
+        static_cast<ObjFile *>(base_internal::LowLevelAlloc::AllocWithArena(
+            new_allocated * sizeof(*new_obj_), SigSafeArena()));
+    if (obj_) {
+      memcpy(new_obj_, obj_, allocated_ * sizeof(*new_obj_));
+      base_internal::LowLevelAlloc::Free(obj_);
+    }
+    obj_ = new_obj_;
+    allocated_ = new_allocated;
+  }
+  return new (&obj_[size_++]) ObjFile;
+}
+
+// ---------------------------------------------------------------
+
+enum FindSymbolResult { SYMBOL_NOT_FOUND = 1, SYMBOL_TRUNCATED, SYMBOL_FOUND };
+
+class Symbolizer {
+ public:
+  Symbolizer();
+  ~Symbolizer();
+  const char *GetSymbol(const void *const pc);
+
+ private:
+  char *CopyString(const char *s) {
+    int len = strlen(s);
+    char *dst = static_cast<char *>(
+        base_internal::LowLevelAlloc::AllocWithArena(len + 1, SigSafeArena()));
+    ABSL_RAW_CHECK(dst != nullptr, "out of memory");
+    memcpy(dst, s, len + 1);
+    return dst;
+  }
+  ObjFile *FindObjFile(const void *const start,
+                       size_t size) ABSL_ATTRIBUTE_NOINLINE;
+  static bool RegisterObjFile(const char *filename,
+                              const void *const start_addr,
+                              const void *const end_addr, uint64_t offset,
+                              void *arg);
+  SymbolCacheLine *GetCacheLine(const void *const pc);
+  const char *FindSymbolInCache(const void *const pc);
+  const char *InsertSymbolInCache(const void *const pc, const char *name);
+  void AgeSymbols(SymbolCacheLine *line);
+  void ClearAddrMap();
+  FindSymbolResult GetSymbolFromObjectFile(const ObjFile &obj,
+                                           const void *const pc,
+                                           const ptrdiff_t relocation,
+                                           char *out, int out_size,
+                                           char *tmp_buf, int tmp_buf_size);
+
+  enum {
+    SYMBOL_BUF_SIZE = 3072,
+    TMP_BUF_SIZE = 1024,
+    SYMBOL_CACHE_LINES = 128,
+  };
+
+  AddrMap addr_map_;
+
+  bool ok_;
+  bool addr_map_read_;
+
+  char symbol_buf_[SYMBOL_BUF_SIZE];
+
+  // tmp_buf_ will be used to store arrays of ElfW(Shdr) and ElfW(Sym)
+  // so we ensure that tmp_buf_ is properly aligned to store either.
+  alignas(16) char tmp_buf_[TMP_BUF_SIZE];
+  static_assert(alignof(ElfW(Shdr)) <= 16,
+                "alignment of tmp buf too small for Shdr");
+  static_assert(alignof(ElfW(Sym)) <= 16,
+                "alignment of tmp buf too small for Sym");
+
+  SymbolCacheLine symbol_cache_[SYMBOL_CACHE_LINES];
+};
+
+static std::atomic<Symbolizer *> g_cached_symbolizer;
+
+}  // namespace
+
+static int SymbolizerSize() {
+#if defined(__wasm__) || defined(__asmjs__)
+  int pagesize = getpagesize();
+#else
+  int pagesize = sysconf(_SC_PAGESIZE);
+#endif
+  return ((sizeof(Symbolizer) - 1) / pagesize + 1) * pagesize;
+}
+
+// Return (and set null) g_cached_symbolized_state if it is not null.
+// Otherwise return a new symbolizer.
+static Symbolizer *AllocateSymbolizer() {
+  InitSigSafeArena();
+  Symbolizer *symbolizer =
+      g_cached_symbolizer.exchange(nullptr, std::memory_order_acquire);
+  if (symbolizer != nullptr) {
+    return symbolizer;
+  }
+  return new (base_internal::LowLevelAlloc::AllocWithArena(
+      SymbolizerSize(), SigSafeArena())) Symbolizer();
+}
+
+// Set g_cached_symbolize_state to s if it is null, otherwise
+// delete s.
+static void FreeSymbolizer(Symbolizer *s) {
+  Symbolizer *old_cached_symbolizer = nullptr;
+  if (!g_cached_symbolizer.compare_exchange_strong(old_cached_symbolizer, s,
+                                                   std::memory_order_release,
+                                                   std::memory_order_relaxed)) {
+    s->~Symbolizer();
+    base_internal::LowLevelAlloc::Free(s);
+  }
+}
+
+Symbolizer::Symbolizer() : ok_(true), addr_map_read_(false) {
+  for (SymbolCacheLine &symbol_cache_line : symbol_cache_) {
+    for (size_t j = 0; j < ABSL_ARRAYSIZE(symbol_cache_line.name); ++j) {
+      symbol_cache_line.pc[j] = nullptr;
+      symbol_cache_line.name[j] = nullptr;
+      symbol_cache_line.age[j] = 0;
+    }
+  }
+}
+
+Symbolizer::~Symbolizer() {
+  for (SymbolCacheLine &symbol_cache_line : symbol_cache_) {
+    for (char *s : symbol_cache_line.name) {
+      base_internal::LowLevelAlloc::Free(s);
+    }
+  }
+  ClearAddrMap();
+}
+
+// We don't use assert() since it's not guaranteed to be
+// async-signal-safe.  Instead we define a minimal assertion
+// macro. So far, we don't need pretty printing for __FILE__, etc.
+#define SAFE_ASSERT(expr) ((expr) ? static_cast<void>(0) : abort())
+
+// Read up to "count" bytes from file descriptor "fd" into the buffer
+// starting at "buf" while handling short reads and EINTR.  On
+// success, return the number of bytes read.  Otherwise, return -1.
+static ssize_t ReadPersistent(int fd, void *buf, size_t count) {
+  SAFE_ASSERT(fd >= 0);
+  SAFE_ASSERT(count <= SSIZE_MAX);
+  char *buf0 = reinterpret_cast<char *>(buf);
+  size_t num_bytes = 0;
+  while (num_bytes < count) {
+    ssize_t len;
+    NO_INTR(len = read(fd, buf0 + num_bytes, count - num_bytes));
+    if (len < 0) {  // There was an error other than EINTR.
+      ABSL_RAW_LOG(WARNING, "read failed: errno=%d", errno);
+      return -1;
+    }
+    if (len == 0) {  // Reached EOF.
+      break;
+    }
+    num_bytes += len;
+  }
+  SAFE_ASSERT(num_bytes <= count);
+  return static_cast<ssize_t>(num_bytes);
+}
+
+// Read up to "count" bytes from "offset" in the file pointed by file
+// descriptor "fd" into the buffer starting at "buf".  On success,
+// return the number of bytes read.  Otherwise, return -1.
+static ssize_t ReadFromOffset(const int fd, void *buf, const size_t count,
+                              const off_t offset) {
+  off_t off = lseek(fd, offset, SEEK_SET);
+  if (off == (off_t)-1) {
+    ABSL_RAW_LOG(WARNING, "lseek(%d, %ju, SEEK_SET) failed: errno=%d", fd,
+                 static_cast<uintmax_t>(offset), errno);
+    return -1;
+  }
+  return ReadPersistent(fd, buf, count);
+}
+
+// Try reading exactly "count" bytes from "offset" bytes in a file
+// pointed by "fd" into the buffer starting at "buf" while handling
+// short reads and EINTR.  On success, return true. Otherwise, return
+// false.
+static bool ReadFromOffsetExact(const int fd, void *buf, const size_t count,
+                                const off_t offset) {
+  ssize_t len = ReadFromOffset(fd, buf, count, offset);
+  return len >= 0 && static_cast<size_t>(len) == count;
+}
+
+// Returns elf_header.e_type if the file pointed by fd is an ELF binary.
+static int FileGetElfType(const int fd) {
+  ElfW(Ehdr) elf_header;
+  if (!ReadFromOffsetExact(fd, &elf_header, sizeof(elf_header), 0)) {
+    return -1;
+  }
+  if (memcmp(elf_header.e_ident, ELFMAG, SELFMAG) != 0) {
+    return -1;
+  }
+  return elf_header.e_type;
+}
+
+// Read the section headers in the given ELF binary, and if a section
+// of the specified type is found, set the output to this section header
+// and return true.  Otherwise, return false.
+// To keep stack consumption low, we would like this function to not get
+// inlined.
+static ABSL_ATTRIBUTE_NOINLINE bool GetSectionHeaderByType(
+    const int fd, ElfW(Half) sh_num, const off_t sh_offset, ElfW(Word) type,
+    ElfW(Shdr) * out, char *tmp_buf, int tmp_buf_size) {
+  ElfW(Shdr) *buf = reinterpret_cast<ElfW(Shdr) *>(tmp_buf);
+  const int buf_entries = tmp_buf_size / sizeof(buf[0]);
+  const int buf_bytes = buf_entries * sizeof(buf[0]);
+
+  for (int i = 0; i < sh_num;) {
+    const ssize_t num_bytes_left = (sh_num - i) * sizeof(buf[0]);
+    const ssize_t num_bytes_to_read =
+        (buf_bytes > num_bytes_left) ? num_bytes_left : buf_bytes;
+    const off_t offset = sh_offset + i * sizeof(buf[0]);
+    const ssize_t len = ReadFromOffset(fd, buf, num_bytes_to_read, offset);
+    if (len % sizeof(buf[0]) != 0) {
+      ABSL_RAW_LOG(
+          WARNING,
+          "Reading %zd bytes from offset %ju returned %zd which is not a "
+          "multiple of %zu.",
+          num_bytes_to_read, static_cast<uintmax_t>(offset), len,
+          sizeof(buf[0]));
+      return false;
+    }
+    const ssize_t num_headers_in_buf = len / sizeof(buf[0]);
+    SAFE_ASSERT(num_headers_in_buf <= buf_entries);
+    for (int j = 0; j < num_headers_in_buf; ++j) {
+      if (buf[j].sh_type == type) {
+        *out = buf[j];
+        return true;
+      }
+    }
+    i += num_headers_in_buf;
+  }
+  return false;
+}
+
+// There is no particular reason to limit section name to 63 characters,
+// but there has (as yet) been no need for anything longer either.
+const int kMaxSectionNameLen = 64;
+
+bool ForEachSection(int fd,
+                    const std::function<bool(const std::string &name,
+                                             const ElfW(Shdr) &)> &callback) {
+  ElfW(Ehdr) elf_header;
+  if (!ReadFromOffsetExact(fd, &elf_header, sizeof(elf_header), 0)) {
+    return false;
+  }
+
+  ElfW(Shdr) shstrtab;
+  off_t shstrtab_offset =
+      (elf_header.e_shoff + elf_header.e_shentsize * elf_header.e_shstrndx);
+  if (!ReadFromOffsetExact(fd, &shstrtab, sizeof(shstrtab), shstrtab_offset)) {
+    return false;
+  }
+
+  for (int i = 0; i < elf_header.e_shnum; ++i) {
+    ElfW(Shdr) out;
+    off_t section_header_offset =
+        (elf_header.e_shoff + elf_header.e_shentsize * i);
+    if (!ReadFromOffsetExact(fd, &out, sizeof(out), section_header_offset)) {
+      return false;
+    }
+    off_t name_offset = shstrtab.sh_offset + out.sh_name;
+    char header_name[kMaxSectionNameLen + 1];
+    ssize_t n_read =
+        ReadFromOffset(fd, &header_name, kMaxSectionNameLen, name_offset);
+    if (n_read == -1) {
+      return false;
+    } else if (n_read > kMaxSectionNameLen) {
+      // Long read?
+      return false;
+    }
+    header_name[n_read] = '\0';
+
+    std::string name(header_name);
+    if (!callback(name, out)) {
+      break;
+    }
+  }
+  return true;
+}
+
+// name_len should include terminating '\0'.
+bool GetSectionHeaderByName(int fd, const char *name, size_t name_len,
+                            ElfW(Shdr) * out) {
+  char header_name[kMaxSectionNameLen];
+  if (sizeof(header_name) < name_len) {
+    ABSL_RAW_LOG(WARNING,
+                 "Section name '%s' is too long (%zu); "
+                 "section will not be found (even if present).",
+                 name, name_len);
+    // No point in even trying.
+    return false;
+  }
+
+  ElfW(Ehdr) elf_header;
+  if (!ReadFromOffsetExact(fd, &elf_header, sizeof(elf_header), 0)) {
+    return false;
+  }
+
+  ElfW(Shdr) shstrtab;
+  off_t shstrtab_offset =
+      (elf_header.e_shoff + elf_header.e_shentsize * elf_header.e_shstrndx);
+  if (!ReadFromOffsetExact(fd, &shstrtab, sizeof(shstrtab), shstrtab_offset)) {
+    return false;
+  }
+
+  for (int i = 0; i < elf_header.e_shnum; ++i) {
+    off_t section_header_offset =
+        (elf_header.e_shoff + elf_header.e_shentsize * i);
+    if (!ReadFromOffsetExact(fd, out, sizeof(*out), section_header_offset)) {
+      return false;
+    }
+    off_t name_offset = shstrtab.sh_offset + out->sh_name;
+    ssize_t n_read = ReadFromOffset(fd, &header_name, name_len, name_offset);
+    if (n_read < 0) {
+      return false;
+    } else if (static_cast<size_t>(n_read) != name_len) {
+      // Short read -- name could be at end of file.
+      continue;
+    }
+    if (memcmp(header_name, name, name_len) == 0) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// Compare symbols at in the same address.
+// Return true if we should pick symbol1.
+static bool ShouldPickFirstSymbol(const ElfW(Sym) & symbol1,
+                                  const ElfW(Sym) & symbol2) {
+  // If one of the symbols is weak and the other is not, pick the one
+  // this is not a weak symbol.
+  char bind1 = ELF_ST_BIND(symbol1.st_info);
+  char bind2 = ELF_ST_BIND(symbol1.st_info);
+  if (bind1 == STB_WEAK && bind2 != STB_WEAK) return false;
+  if (bind2 == STB_WEAK && bind1 != STB_WEAK) return true;
+
+  // If one of the symbols has zero size and the other is not, pick the
+  // one that has non-zero size.
+  if (symbol1.st_size != 0 && symbol2.st_size == 0) {
+    return true;
+  }
+  if (symbol1.st_size == 0 && symbol2.st_size != 0) {
+    return false;
+  }
+
+  // If one of the symbols has no type and the other is not, pick the
+  // one that has a type.
+  char type1 = ELF_ST_TYPE(symbol1.st_info);
+  char type2 = ELF_ST_TYPE(symbol1.st_info);
+  if (type1 != STT_NOTYPE && type2 == STT_NOTYPE) {
+    return true;
+  }
+  if (type1 == STT_NOTYPE && type2 != STT_NOTYPE) {
+    return false;
+  }
+
+  // Pick the first one, if we still cannot decide.
+  return true;
+}
+
+// Return true if an address is inside a section.
+static bool InSection(const void *address, const ElfW(Shdr) * section) {
+  const char *start = reinterpret_cast<const char *>(section->sh_addr);
+  size_t size = static_cast<size_t>(section->sh_size);
+  return start <= address && address < (start + size);
+}
+
+static const char *ComputeOffset(const char *base, ptrdiff_t offset) {
+  // Note: cast to uintptr_t to avoid undefined behavior when base evaluates to
+  // zero and offset is non-zero.
+  return reinterpret_cast<const char *>(
+      reinterpret_cast<uintptr_t>(base) + offset);
+}
+
+// Read a symbol table and look for the symbol containing the
+// pc. Iterate over symbols in a symbol table and look for the symbol
+// containing "pc".  If the symbol is found, and its name fits in
+// out_size, the name is written into out and SYMBOL_FOUND is returned.
+// If the name does not fit, truncated name is written into out,
+// and SYMBOL_TRUNCATED is returned. Out is NUL-terminated.
+// If the symbol is not found, SYMBOL_NOT_FOUND is returned;
+// To keep stack consumption low, we would like this function to not get
+// inlined.
+static ABSL_ATTRIBUTE_NOINLINE FindSymbolResult FindSymbol(
+    const void *const pc, const int fd, char *out, int out_size,
+    ptrdiff_t relocation, const ElfW(Shdr) * strtab, const ElfW(Shdr) * symtab,
+    const ElfW(Shdr) * opd, char *tmp_buf, int tmp_buf_size) {
+  if (symtab == nullptr) {
+    return SYMBOL_NOT_FOUND;
+  }
+
+  // Read multiple symbols at once to save read() calls.
+  ElfW(Sym) *buf = reinterpret_cast<ElfW(Sym) *>(tmp_buf);
+  const int buf_entries = tmp_buf_size / sizeof(buf[0]);
+
+  const int num_symbols = symtab->sh_size / symtab->sh_entsize;
+
+  // On platforms using an .opd section (PowerPC & IA64), a function symbol
+  // has the address of a function descriptor, which contains the real
+  // starting address.  However, we do not always want to use the real
+  // starting address because we sometimes want to symbolize a function
+  // pointer into the .opd section, e.g. FindSymbol(&foo,...).
+  const bool pc_in_opd =
+      kPlatformUsesOPDSections && opd != nullptr && InSection(pc, opd);
+  const bool deref_function_descriptor_pointer =
+      kPlatformUsesOPDSections && opd != nullptr && !pc_in_opd;
+
+  ElfW(Sym) best_match;
+  SafeMemZero(&best_match, sizeof(best_match));
+  bool found_match = false;
+  for (int i = 0; i < num_symbols;) {
+    off_t offset = symtab->sh_offset + i * symtab->sh_entsize;
+    const int num_remaining_symbols = num_symbols - i;
+    const int entries_in_chunk = std::min(num_remaining_symbols, buf_entries);
+    const int bytes_in_chunk = entries_in_chunk * sizeof(buf[0]);
+    const ssize_t len = ReadFromOffset(fd, buf, bytes_in_chunk, offset);
+    SAFE_ASSERT(len % sizeof(buf[0]) == 0);
+    const ssize_t num_symbols_in_buf = len / sizeof(buf[0]);
+    SAFE_ASSERT(num_symbols_in_buf <= entries_in_chunk);
+    for (int j = 0; j < num_symbols_in_buf; ++j) {
+      const ElfW(Sym) &symbol = buf[j];
+
+      // For a DSO, a symbol address is relocated by the loading address.
+      // We keep the original address for opd redirection below.
+      const char *const original_start_address =
+          reinterpret_cast<const char *>(symbol.st_value);
+      const char *start_address =
+          ComputeOffset(original_start_address, relocation);
+
+      if (deref_function_descriptor_pointer &&
+          InSection(original_start_address, opd)) {
+        // The opd section is mapped into memory.  Just dereference
+        // start_address to get the first double word, which points to the
+        // function entry.
+        start_address = *reinterpret_cast<const char *const *>(start_address);
+      }
+
+      // If pc is inside the .opd section, it points to a function descriptor.
+      const size_t size = pc_in_opd ? kFunctionDescriptorSize : symbol.st_size;
+      const void *const end_address = ComputeOffset(start_address, size);
+      if (symbol.st_value != 0 &&  // Skip null value symbols.
+          symbol.st_shndx != 0 &&  // Skip undefined symbols.
+#ifdef STT_TLS
+          ELF_ST_TYPE(symbol.st_info) != STT_TLS &&  // Skip thread-local data.
+#endif                                               // STT_TLS
+          ((start_address <= pc && pc < end_address) ||
+           (start_address == pc && pc == end_address))) {
+        if (!found_match || ShouldPickFirstSymbol(symbol, best_match)) {
+          found_match = true;
+          best_match = symbol;
+        }
+      }
+    }
+    i += num_symbols_in_buf;
+  }
+
+  if (found_match) {
+    const size_t off = strtab->sh_offset + best_match.st_name;
+    const ssize_t n_read = ReadFromOffset(fd, out, out_size, off);
+    if (n_read <= 0) {
+      // This should never happen.
+      ABSL_RAW_LOG(WARNING,
+                   "Unable to read from fd %d at offset %zu: n_read = %zd", fd,
+                   off, n_read);
+      return SYMBOL_NOT_FOUND;
+    }
+    ABSL_RAW_CHECK(n_read <= out_size, "ReadFromOffset read too much data.");
+
+    // strtab->sh_offset points into .strtab-like section that contains
+    // NUL-terminated strings: '\0foo\0barbaz\0...".
+    //
+    // sh_offset+st_name points to the start of symbol name, but we don't know
+    // how long the symbol is, so we try to read as much as we have space for,
+    // and usually over-read (i.e. there is a NUL somewhere before n_read).
+    if (memchr(out, '\0', n_read) == nullptr) {
+      // Either out_size was too small (n_read == out_size and no NUL), or
+      // we tried to read past the EOF (n_read < out_size) and .strtab is
+      // corrupt (missing terminating NUL; should never happen for valid ELF).
+      out[n_read - 1] = '\0';
+      return SYMBOL_TRUNCATED;
+    }
+    return SYMBOL_FOUND;
+  }
+
+  return SYMBOL_NOT_FOUND;
+}
+
+// Get the symbol name of "pc" from the file pointed by "fd".  Process
+// both regular and dynamic symbol tables if necessary.
+// See FindSymbol() comment for description of return value.
+FindSymbolResult Symbolizer::GetSymbolFromObjectFile(
+    const ObjFile &obj, const void *const pc, const ptrdiff_t relocation,
+    char *out, int out_size, char *tmp_buf, int tmp_buf_size) {
+  ElfW(Shdr) symtab;
+  ElfW(Shdr) strtab;
+  ElfW(Shdr) opd;
+  ElfW(Shdr) *opd_ptr = nullptr;
+
+  // On platforms using an .opd sections for function descriptor, read
+  // the section header.  The .opd section is in data segment and should be
+  // loaded but we check that it is mapped just to be extra careful.
+  if (kPlatformUsesOPDSections) {
+    if (GetSectionHeaderByName(obj.fd, kOpdSectionName,
+                               sizeof(kOpdSectionName) - 1, &opd) &&
+        FindObjFile(reinterpret_cast<const char *>(opd.sh_addr) + relocation,
+                    opd.sh_size) != nullptr) {
+      opd_ptr = &opd;
+    } else {
+      return SYMBOL_NOT_FOUND;
+    }
+  }
+
+  // Consult a regular symbol table, then fall back to the dynamic symbol table.
+  for (const auto symbol_table_type : {SHT_SYMTAB, SHT_DYNSYM}) {
+    if (!GetSectionHeaderByType(obj.fd, obj.elf_header.e_shnum,
+                                obj.elf_header.e_shoff, symbol_table_type,
+                                &symtab, tmp_buf, tmp_buf_size)) {
+      continue;
+    }
+    if (!ReadFromOffsetExact(
+            obj.fd, &strtab, sizeof(strtab),
+            obj.elf_header.e_shoff + symtab.sh_link * sizeof(symtab))) {
+      continue;
+    }
+    const FindSymbolResult rc =
+        FindSymbol(pc, obj.fd, out, out_size, relocation, &strtab, &symtab,
+                   opd_ptr, tmp_buf, tmp_buf_size);
+    if (rc != SYMBOL_NOT_FOUND) {
+      return rc;
+    }
+  }
+
+  return SYMBOL_NOT_FOUND;
+}
+
+namespace {
+// Thin wrapper around a file descriptor so that the file descriptor
+// gets closed for sure.
+class FileDescriptor {
+ public:
+  explicit FileDescriptor(int fd) : fd_(fd) {}
+  FileDescriptor(const FileDescriptor &) = delete;
+  FileDescriptor &operator=(const FileDescriptor &) = delete;
+
+  ~FileDescriptor() {
+    if (fd_ >= 0) {
+      NO_INTR(close(fd_));
+    }
+  }
+
+  int get() const { return fd_; }
+
+ private:
+  const int fd_;
+};
+
+// Helper class for reading lines from file.
+//
+// Note: we don't use ProcMapsIterator since the object is big (it has
+// a 5k array member) and uses async-unsafe functions such as sscanf()
+// and snprintf().
+class LineReader {
+ public:
+  explicit LineReader(int fd, char *buf, int buf_len)
+      : fd_(fd),
+        buf_len_(buf_len),
+        buf_(buf),
+        bol_(buf),
+        eol_(buf),
+        eod_(buf) {}
+
+  LineReader(const LineReader &) = delete;
+  LineReader &operator=(const LineReader &) = delete;
+
+  // Read '\n'-terminated line from file.  On success, modify "bol"
+  // and "eol", then return true.  Otherwise, return false.
+  //
+  // Note: if the last line doesn't end with '\n', the line will be
+  // dropped.  It's an intentional behavior to make the code simple.
+  bool ReadLine(const char **bol, const char **eol) {
+    if (BufferIsEmpty()) {  // First time.
+      const ssize_t num_bytes = ReadPersistent(fd_, buf_, buf_len_);
+      if (num_bytes <= 0) {  // EOF or error.
+        return false;
+      }
+      eod_ = buf_ + num_bytes;
+      bol_ = buf_;
+    } else {
+      bol_ = eol_ + 1;            // Advance to the next line in the buffer.
+      SAFE_ASSERT(bol_ <= eod_);  // "bol_" can point to "eod_".
+      if (!HasCompleteLine()) {
+        const int incomplete_line_length = eod_ - bol_;
+        // Move the trailing incomplete line to the beginning.
+        memmove(buf_, bol_, incomplete_line_length);
+        // Read text from file and append it.
+        char *const append_pos = buf_ + incomplete_line_length;
+        const int capacity_left = buf_len_ - incomplete_line_length;
+        const ssize_t num_bytes =
+            ReadPersistent(fd_, append_pos, capacity_left);
+        if (num_bytes <= 0) {  // EOF or error.
+          return false;
+        }
+        eod_ = append_pos + num_bytes;
+        bol_ = buf_;
+      }
+    }
+    eol_ = FindLineFeed();
+    if (eol_ == nullptr) {  // '\n' not found.  Malformed line.
+      return false;
+    }
+    *eol_ = '\0';  // Replace '\n' with '\0'.
+
+    *bol = bol_;
+    *eol = eol_;
+    return true;
+  }
+
+ private:
+  char *FindLineFeed() const {
+    return reinterpret_cast<char *>(memchr(bol_, '\n', eod_ - bol_));
+  }
+
+  bool BufferIsEmpty() const { return buf_ == eod_; }
+
+  bool HasCompleteLine() const {
+    return !BufferIsEmpty() && FindLineFeed() != nullptr;
+  }
+
+  const int fd_;
+  const int buf_len_;
+  char *const buf_;
+  char *bol_;
+  char *eol_;
+  const char *eod_;  // End of data in "buf_".
+};
+}  // namespace
+
+// Place the hex number read from "start" into "*hex".  The pointer to
+// the first non-hex character or "end" is returned.
+static const char *GetHex(const char *start, const char *end,
+                          uint64_t *const value) {
+  uint64_t hex = 0;
+  const char *p;
+  for (p = start; p < end; ++p) {
+    int ch = *p;
+    if ((ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'F') ||
+        (ch >= 'a' && ch <= 'f')) {
+      hex = (hex << 4) | (ch < 'A' ? ch - '0' : (ch & 0xF) + 9);
+    } else {  // Encountered the first non-hex character.
+      break;
+    }
+  }
+  SAFE_ASSERT(p <= end);
+  *value = hex;
+  return p;
+}
+
+static const char *GetHex(const char *start, const char *end,
+                          const void **const addr) {
+  uint64_t hex = 0;
+  const char *p = GetHex(start, end, &hex);
+  *addr = reinterpret_cast<void *>(hex);
+  return p;
+}
+
+// Normally we are only interested in "r?x" maps.
+// On the PowerPC, function pointers point to descriptors in the .opd
+// section.  The descriptors themselves are not executable code, so
+// we need to relax the check below to "r??".
+static bool ShouldUseMapping(const char *const flags) {
+  return flags[0] == 'r' && (kPlatformUsesOPDSections || flags[2] == 'x');
+}
+
+// Read /proc/self/maps and run "callback" for each mmapped file found.  If
+// "callback" returns false, stop scanning and return true. Else continue
+// scanning /proc/self/maps. Return true if no parse error is found.
+static ABSL_ATTRIBUTE_NOINLINE bool ReadAddrMap(
+    bool (*callback)(const char *filename, const void *const start_addr,
+                     const void *const end_addr, uint64_t offset, void *arg),
+    void *arg, void *tmp_buf, int tmp_buf_size) {
+  // Use /proc/self/task/<pid>/maps instead of /proc/self/maps. The latter
+  // requires kernel to stop all threads, and is significantly slower when there
+  // are 1000s of threads.
+  char maps_path[80];
+  snprintf(maps_path, sizeof(maps_path), "/proc/self/task/%d/maps", getpid());
+
+  int maps_fd;
+  NO_INTR(maps_fd = open(maps_path, O_RDONLY));
+  FileDescriptor wrapped_maps_fd(maps_fd);
+  if (wrapped_maps_fd.get() < 0) {
+    ABSL_RAW_LOG(WARNING, "%s: errno=%d", maps_path, errno);
+    return false;
+  }
+
+  // Iterate over maps and look for the map containing the pc.  Then
+  // look into the symbol tables inside.
+  LineReader reader(wrapped_maps_fd.get(), static_cast<char *>(tmp_buf),
+                    tmp_buf_size);
+  while (true) {
+    const char *cursor;
+    const char *eol;
+    if (!reader.ReadLine(&cursor, &eol)) {  // EOF or malformed line.
+      break;
+    }
+
+    const char *line = cursor;
+    const void *start_address;
+    // Start parsing line in /proc/self/maps.  Here is an example:
+    //
+    // 08048000-0804c000 r-xp 00000000 08:01 2142121    /bin/cat
+    //
+    // We want start address (08048000), end address (0804c000), flags
+    // (r-xp) and file name (/bin/cat).
+
+    // Read start address.
+    cursor = GetHex(cursor, eol, &start_address);
+    if (cursor == eol || *cursor != '-') {
+      ABSL_RAW_LOG(WARNING, "Corrupt /proc/self/maps line: %s", line);
+      return false;
+    }
+    ++cursor;  // Skip '-'.
+
+    // Read end address.
+    const void *end_address;
+    cursor = GetHex(cursor, eol, &end_address);
+    if (cursor == eol || *cursor != ' ') {
+      ABSL_RAW_LOG(WARNING, "Corrupt /proc/self/maps line: %s", line);
+      return false;
+    }
+    ++cursor;  // Skip ' '.
+
+    // Read flags.  Skip flags until we encounter a space or eol.
+    const char *const flags_start = cursor;
+    while (cursor < eol && *cursor != ' ') {
+      ++cursor;
+    }
+    // We expect at least four letters for flags (ex. "r-xp").
+    if (cursor == eol || cursor < flags_start + 4) {
+      ABSL_RAW_LOG(WARNING, "Corrupt /proc/self/maps: %s", line);
+      return false;
+    }
+
+    // Check flags.
+    if (!ShouldUseMapping(flags_start)) {
+      continue;  // We skip this map.
+    }
+    ++cursor;  // Skip ' '.
+
+    // Read file offset.
+    uint64_t offset;
+    cursor = GetHex(cursor, eol, &offset);
+    ++cursor;  // Skip ' '.
+
+    // Skip to file name.  "cursor" now points to dev.  We need to skip at least
+    // two spaces for dev and inode.
+    int num_spaces = 0;
+    while (cursor < eol) {
+      if (*cursor == ' ') {
+        ++num_spaces;
+      } else if (num_spaces >= 2) {
+        // The first non-space character after  skipping two spaces
+        // is the beginning of the file name.
+        break;
+      }
+      ++cursor;
+    }
+
+    // Check whether this entry corresponds to our hint table for the true
+    // filename.
+    bool hinted =
+        GetFileMappingHint(&start_address, &end_address, &offset, &cursor);
+    if (!hinted && (cursor == eol || cursor[0] == '[')) {
+      // not an object file, typically [vdso] or [vsyscall]
+      continue;
+    }
+    if (!callback(cursor, start_address, end_address, offset, arg)) break;
+  }
+  return true;
+}
+
+// Find the objfile mapped in address region containing [addr, addr + len).
+ObjFile *Symbolizer::FindObjFile(const void *const addr, size_t len) {
+  for (int i = 0; i < 2; ++i) {
+    if (!ok_) return nullptr;
+
+    // Read /proc/self/maps if necessary
+    if (!addr_map_read_) {
+      addr_map_read_ = true;
+      if (!ReadAddrMap(RegisterObjFile, this, tmp_buf_, TMP_BUF_SIZE)) {
+        ok_ = false;
+        return nullptr;
+      }
+    }
+
+    int lo = 0;
+    int hi = addr_map_.Size();
+    while (lo < hi) {
+      int mid = (lo + hi) / 2;
+      if (addr < addr_map_.At(mid)->end_addr) {
+        hi = mid;
+      } else {
+        lo = mid + 1;
+      }
+    }
+    if (lo != addr_map_.Size()) {
+      ObjFile *obj = addr_map_.At(lo);
+      SAFE_ASSERT(obj->end_addr > addr);
+      if (addr >= obj->start_addr &&
+          reinterpret_cast<const char *>(addr) + len <= obj->end_addr)
+        return obj;
+    }
+
+    // The address mapping may have changed since it was last read.  Retry.
+    ClearAddrMap();
+  }
+  return nullptr;
+}
+
+void Symbolizer::ClearAddrMap() {
+  for (int i = 0; i != addr_map_.Size(); i++) {
+    ObjFile *o = addr_map_.At(i);
+    base_internal::LowLevelAlloc::Free(o->filename);
+    if (o->fd >= 0) {
+      NO_INTR(close(o->fd));
+    }
+  }
+  addr_map_.Clear();
+  addr_map_read_ = false;
+}
+
+// Callback for ReadAddrMap to register objfiles in an in-memory table.
+bool Symbolizer::RegisterObjFile(const char *filename,
+                                 const void *const start_addr,
+                                 const void *const end_addr, uint64_t offset,
+                                 void *arg) {
+  Symbolizer *impl = static_cast<Symbolizer *>(arg);
+
+  // Files are supposed to be added in the increasing address order.  Make
+  // sure that's the case.
+  int addr_map_size = impl->addr_map_.Size();
+  if (addr_map_size != 0) {
+    ObjFile *old = impl->addr_map_.At(addr_map_size - 1);
+    if (old->end_addr > end_addr) {
+      ABSL_RAW_LOG(ERROR,
+                   "Unsorted addr map entry: 0x%" PRIxPTR ": %s <-> 0x%" PRIxPTR
+                   ": %s",
+                   reinterpret_cast<uintptr_t>(end_addr), filename,
+                   reinterpret_cast<uintptr_t>(old->end_addr), old->filename);
+      return true;
+    } else if (old->end_addr == end_addr) {
+      // The same entry appears twice. This sometimes happens for [vdso].
+      if (old->start_addr != start_addr ||
+          strcmp(old->filename, filename) != 0) {
+        ABSL_RAW_LOG(ERROR,
+                     "Duplicate addr 0x%" PRIxPTR ": %s <-> 0x%" PRIxPTR ": %s",
+                     reinterpret_cast<uintptr_t>(end_addr), filename,
+                     reinterpret_cast<uintptr_t>(old->end_addr), old->filename);
+      }
+      return true;
+    }
+  }
+  ObjFile *obj = impl->addr_map_.Add();
+  obj->filename = impl->CopyString(filename);
+  obj->start_addr = start_addr;
+  obj->end_addr = end_addr;
+  obj->offset = offset;
+  obj->elf_type = -1;  // filled on demand
+  obj->fd = -1;        // opened on demand
+  return true;
+}
+
+// This function wraps the Demangle function to provide an interface
+// where the input symbol is demangled in-place.
+// To keep stack consumption low, we would like this function to not
+// get inlined.
+static ABSL_ATTRIBUTE_NOINLINE void DemangleInplace(char *out, int out_size,
+                                                    char *tmp_buf,
+                                                    int tmp_buf_size) {
+  if (Demangle(out, tmp_buf, tmp_buf_size)) {
+    // Demangling succeeded. Copy to out if the space allows.
+    int len = strlen(tmp_buf);
+    if (len + 1 <= out_size) {  // +1 for '\0'.
+      SAFE_ASSERT(len < tmp_buf_size);
+      memmove(out, tmp_buf, len + 1);
+    }
+  }
+}
+
+SymbolCacheLine *Symbolizer::GetCacheLine(const void *const pc) {
+  uintptr_t pc0 = reinterpret_cast<uintptr_t>(pc);
+  pc0 >>= 3;  // drop the low 3 bits
+
+  // Shuffle bits.
+  pc0 ^= (pc0 >> 6) ^ (pc0 >> 12) ^ (pc0 >> 18);
+  return &symbol_cache_[pc0 % SYMBOL_CACHE_LINES];
+}
+
+void Symbolizer::AgeSymbols(SymbolCacheLine *line) {
+  for (uint32_t &age : line->age) {
+    ++age;
+  }
+}
+
+const char *Symbolizer::FindSymbolInCache(const void *const pc) {
+  if (pc == nullptr) return nullptr;
+
+  SymbolCacheLine *line = GetCacheLine(pc);
+  for (size_t i = 0; i < ABSL_ARRAYSIZE(line->pc); ++i) {
+    if (line->pc[i] == pc) {
+      AgeSymbols(line);
+      line->age[i] = 0;
+      return line->name[i];
+    }
+  }
+  return nullptr;
+}
+
+const char *Symbolizer::InsertSymbolInCache(const void *const pc,
+                                            const char *name) {
+  SAFE_ASSERT(pc != nullptr);
+
+  SymbolCacheLine *line = GetCacheLine(pc);
+  uint32_t max_age = 0;
+  int oldest_index = -1;
+  for (size_t i = 0; i < ABSL_ARRAYSIZE(line->pc); ++i) {
+    if (line->pc[i] == nullptr) {
+      AgeSymbols(line);
+      line->pc[i] = pc;
+      line->name[i] = CopyString(name);
+      line->age[i] = 0;
+      return line->name[i];
+    }
+    if (line->age[i] >= max_age) {
+      max_age = line->age[i];
+      oldest_index = i;
+    }
+  }
+
+  AgeSymbols(line);
+  ABSL_RAW_CHECK(oldest_index >= 0, "Corrupt cache");
+  base_internal::LowLevelAlloc::Free(line->name[oldest_index]);
+  line->pc[oldest_index] = pc;
+  line->name[oldest_index] = CopyString(name);
+  line->age[oldest_index] = 0;
+  return line->name[oldest_index];
+}
+
+static void MaybeOpenFdFromSelfExe(ObjFile *obj) {
+  if (memcmp(obj->start_addr, ELFMAG, SELFMAG) != 0) {
+    return;
+  }
+  int fd = open("/proc/self/exe", O_RDONLY);
+  if (fd == -1) {
+    return;
+  }
+  // Verify that contents of /proc/self/exe matches in-memory image of
+  // the binary. This can fail if the "deleted" binary is in fact not
+  // the main executable, or for binaries that have the first PT_LOAD
+  // segment smaller than 4K. We do it in four steps so that the
+  // buffer is smaller and we don't consume too much stack space.
+  const char *mem = reinterpret_cast<const char *>(obj->start_addr);
+  for (int i = 0; i < 4; ++i) {
+    char buf[1024];
+    ssize_t n = read(fd, buf, sizeof(buf));
+    if (n != sizeof(buf) || memcmp(buf, mem, sizeof(buf)) != 0) {
+      close(fd);
+      return;
+    }
+    mem += sizeof(buf);
+  }
+  obj->fd = fd;
+}
+
+static bool MaybeInitializeObjFile(ObjFile *obj) {
+  if (obj->fd < 0) {
+    obj->fd = open(obj->filename, O_RDONLY);
+
+    if (obj->fd < 0) {
+      // Getting /proc/self/exe here means that we were hinted.
+      if (strcmp(obj->filename, "/proc/self/exe") == 0) {
+        // /proc/self/exe may be inaccessible (due to setuid, etc.), so try
+        // accessing the binary via argv0.
+        if (argv0_value != nullptr) {
+          obj->fd = open(argv0_value, O_RDONLY);
+        }
+      } else {
+        MaybeOpenFdFromSelfExe(obj);
+      }
+    }
+
+    if (obj->fd < 0) {
+      ABSL_RAW_LOG(WARNING, "%s: open failed: errno=%d", obj->filename, errno);
+      return false;
+    }
+    obj->elf_type = FileGetElfType(obj->fd);
+    if (obj->elf_type < 0) {
+      ABSL_RAW_LOG(WARNING, "%s: wrong elf type: %d", obj->filename,
+                   obj->elf_type);
+      return false;
+    }
+
+    if (!ReadFromOffsetExact(obj->fd, &obj->elf_header, sizeof(obj->elf_header),
+                             0)) {
+      ABSL_RAW_LOG(WARNING, "%s: failed to read elf header", obj->filename);
+      return false;
+    }
+  }
+  return true;
+}
+
+// The implementation of our symbolization routine.  If it
+// successfully finds the symbol containing "pc" and obtains the
+// symbol name, returns pointer to that symbol. Otherwise, returns nullptr.
+// If any symbol decorators have been installed via InstallSymbolDecorator(),
+// they are called here as well.
+// To keep stack consumption low, we would like this function to not
+// get inlined.
+const char *Symbolizer::GetSymbol(const void *const pc) {
+  const char *entry = FindSymbolInCache(pc);
+  if (entry != nullptr) {
+    return entry;
+  }
+  symbol_buf_[0] = '\0';
+
+  ObjFile *const obj = FindObjFile(pc, 1);
+  ptrdiff_t relocation = 0;
+  int fd = -1;
+  if (obj != nullptr) {
+    if (MaybeInitializeObjFile(obj)) {
+      if (obj->elf_type == ET_DYN &&
+          reinterpret_cast<uint64_t>(obj->start_addr) >= obj->offset) {
+        // This object was relocated.
+        //
+        // For obj->offset > 0, adjust the relocation since a mapping at offset
+        // X in the file will have a start address of [true relocation]+X.
+        relocation = reinterpret_cast<ptrdiff_t>(obj->start_addr) - obj->offset;
+      }
+
+      fd = obj->fd;
+    }
+    if (GetSymbolFromObjectFile(*obj, pc, relocation, symbol_buf_,
+                                sizeof(symbol_buf_), tmp_buf_,
+                                sizeof(tmp_buf_)) == SYMBOL_FOUND) {
+      // Only try to demangle the symbol name if it fit into symbol_buf_.
+      DemangleInplace(symbol_buf_, sizeof(symbol_buf_), tmp_buf_,
+                      sizeof(tmp_buf_));
+    }
+  } else {
+#if ABSL_HAVE_VDSO_SUPPORT
+    VDSOSupport vdso;
+    if (vdso.IsPresent()) {
+      VDSOSupport::SymbolInfo symbol_info;
+      if (vdso.LookupSymbolByAddress(pc, &symbol_info)) {
+        // All VDSO symbols are known to be short.
+        size_t len = strlen(symbol_info.name);
+        ABSL_RAW_CHECK(len + 1 < sizeof(symbol_buf_),
+                       "VDSO symbol unexpectedly long");
+        memcpy(symbol_buf_, symbol_info.name, len + 1);
+      }
+    }
+#endif
+  }
+
+  if (g_decorators_mu.TryLock()) {
+    if (g_num_decorators > 0) {
+      SymbolDecoratorArgs decorator_args = {
+          pc,       relocation,       fd,     symbol_buf_, sizeof(symbol_buf_),
+          tmp_buf_, sizeof(tmp_buf_), nullptr};
+      for (int i = 0; i < g_num_decorators; ++i) {
+        decorator_args.arg = g_decorators[i].arg;
+        g_decorators[i].fn(&decorator_args);
+      }
+    }
+    g_decorators_mu.Unlock();
+  }
+  if (symbol_buf_[0] == '\0') {
+    return nullptr;
+  }
+  symbol_buf_[sizeof(symbol_buf_) - 1] = '\0';  // Paranoia.
+  return InsertSymbolInCache(pc, symbol_buf_);
+}
+
+bool RemoveAllSymbolDecorators(void) {
+  if (!g_decorators_mu.TryLock()) {
+    // Someone else is using decorators. Get out.
+    return false;
+  }
+  g_num_decorators = 0;
+  g_decorators_mu.Unlock();
+  return true;
+}
+
+bool RemoveSymbolDecorator(int ticket) {
+  if (!g_decorators_mu.TryLock()) {
+    // Someone else is using decorators. Get out.
+    return false;
+  }
+  for (int i = 0; i < g_num_decorators; ++i) {
+    if (g_decorators[i].ticket == ticket) {
+      while (i < g_num_decorators - 1) {
+        g_decorators[i] = g_decorators[i + 1];
+        ++i;
+      }
+      g_num_decorators = i;
+      break;
+    }
+  }
+  g_decorators_mu.Unlock();
+  return true;  // Decorator is known to be removed.
+}
+
+int InstallSymbolDecorator(SymbolDecorator decorator, void *arg) {
+  static int ticket = 0;
+
+  if (!g_decorators_mu.TryLock()) {
+    // Someone else is using decorators. Get out.
+    return false;
+  }
+  int ret = ticket;
+  if (g_num_decorators >= kMaxDecorators) {
+    ret = -1;
+  } else {
+    g_decorators[g_num_decorators] = {decorator, arg, ticket++};
+    ++g_num_decorators;
+  }
+  g_decorators_mu.Unlock();
+  return ret;
+}
+
+bool RegisterFileMappingHint(const void *start, const void *end, uint64_t offset,
+                             const char *filename) {
+  SAFE_ASSERT(start <= end);
+  SAFE_ASSERT(filename != nullptr);
+
+  InitSigSafeArena();
+
+  if (!g_file_mapping_mu.TryLock()) {
+    return false;
+  }
+
+  bool ret = true;
+  if (g_num_file_mapping_hints >= kMaxFileMappingHints) {
+    ret = false;
+  } else {
+    // TODO(ckennelly): Move this into a std::string copy routine.
+    int len = strlen(filename);
+    char *dst = static_cast<char *>(
+        base_internal::LowLevelAlloc::AllocWithArena(len + 1, SigSafeArena()));
+    ABSL_RAW_CHECK(dst != nullptr, "out of memory");
+    memcpy(dst, filename, len + 1);
+
+    auto &hint = g_file_mapping_hints[g_num_file_mapping_hints++];
+    hint.start = start;
+    hint.end = end;
+    hint.offset = offset;
+    hint.filename = dst;
+  }
+
+  g_file_mapping_mu.Unlock();
+  return ret;
+}
+
+bool GetFileMappingHint(const void **start, const void **end, uint64_t *offset,
+                        const char **filename) {
+  if (!g_file_mapping_mu.TryLock()) {
+    return false;
+  }
+  bool found = false;
+  for (int i = 0; i < g_num_file_mapping_hints; i++) {
+    if (g_file_mapping_hints[i].start <= *start &&
+        *end <= g_file_mapping_hints[i].end) {
+      // We assume that the start_address for the mapping is the base
+      // address of the ELF section, but when [start_address,end_address) is
+      // not strictly equal to [hint.start, hint.end), that assumption is
+      // invalid.
+      //
+      // This uses the hint's start address (even though hint.start is not
+      // necessarily equal to start_address) to ensure the correct
+      // relocation is computed later.
+      *start = g_file_mapping_hints[i].start;
+      *end = g_file_mapping_hints[i].end;
+      *offset = g_file_mapping_hints[i].offset;
+      *filename = g_file_mapping_hints[i].filename;
+      found = true;
+      break;
+    }
+  }
+  g_file_mapping_mu.Unlock();
+  return found;
+}
+
+}  // namespace debugging_internal
+
+bool Symbolize(const void *pc, char *out, int out_size) {
+  // Symbolization is very slow under tsan.
+  ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN();
+  SAFE_ASSERT(out_size >= 0);
+  debugging_internal::Symbolizer *s = debugging_internal::AllocateSymbolizer();
+  const char *name = s->GetSymbol(pc);
+  bool ok = false;
+  if (name != nullptr && out_size > 0) {
+    strncpy(out, name, out_size);
+    ok = true;
+    if (out[out_size - 1] != '\0') {
+      // strncpy() does not '\0' terminate when it truncates.  Do so, with
+      // trailing ellipsis.
+      static constexpr char kEllipsis[] = "...";
+      int ellipsis_size =
+          std::min(implicit_cast<int>(strlen(kEllipsis)), out_size - 1);
+      memcpy(out + out_size - ellipsis_size - 1, kEllipsis, ellipsis_size);
+      out[out_size - 1] = '\0';
+    }
+  }
+  debugging_internal::FreeSymbolizer(s);
+  ANNOTATE_IGNORE_READS_AND_WRITES_END();
+  return ok;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_unimplemented.inc b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_unimplemented.inc
new file mode 100644
index 0000000..db24456
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_unimplemented.inc	
@@ -0,0 +1,40 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <cstdint>
+
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace debugging_internal {
+
+int InstallSymbolDecorator(SymbolDecorator, void*) { return -1; }
+bool RemoveSymbolDecorator(int) { return false; }
+bool RemoveAllSymbolDecorators(void) { return false; }
+bool RegisterFileMappingHint(const void *, const void *, uint64_t, const char *) {
+  return false;
+}
+bool GetFileMappingHint(const void **, const void **, uint64_t *, const char **) {
+  return false;
+}
+
+}  // namespace debugging_internal
+
+void InitializeSymbolizer(const char*) {}
+bool Symbolize(const void *, char *, int) { return false; }
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_win32.inc b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_win32.inc
new file mode 100644
index 0000000..c3df46f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/debugging/symbolize_win32.inc	
@@ -0,0 +1,81 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// See "Retrieving Symbol Information by Address":
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms680578(v=vs.85).aspx
+
+#include <windows.h>
+
+// MSVC header dbghelp.h has a warning for an ignored typedef.
+#pragma warning(push)
+#pragma warning(disable:4091)
+#include <dbghelp.h>
+#pragma warning(pop)
+
+#pragma comment(lib, "dbghelp.lib")
+
+#include <algorithm>
+#include <cstring>
+
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+static HANDLE process = NULL;
+
+void InitializeSymbolizer(const char*) {
+  if (process != nullptr) {
+    return;
+  }
+  process = GetCurrentProcess();
+
+  // Symbols are not loaded until a reference is made requiring the
+  // symbols be loaded. This is the fastest, most efficient way to use
+  // the symbol handler.
+  SymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_UNDNAME);
+  if (!SymInitialize(process, nullptr, true)) {
+    // GetLastError() returns a Win32 DWORD, but we assign to
+    // unsigned long long to simplify the ABSL_RAW_LOG case below.  The uniform
+    // initialization guarantees this is not a narrowing conversion.
+    const unsigned long long error{GetLastError()};  // NOLINT(runtime/int)
+    ABSL_RAW_LOG(FATAL, "SymInitialize() failed: %llu", error);
+  }
+}
+
+bool Symbolize(const void* pc, char* out, int out_size) {
+  if (out_size <= 0) {
+    return false;
+  }
+  alignas(SYMBOL_INFO) char buf[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
+  SYMBOL_INFO* symbol = reinterpret_cast<SYMBOL_INFO*>(buf);
+  symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
+  symbol->MaxNameLen = MAX_SYM_NAME;
+  if (!SymFromAddr(process, reinterpret_cast<DWORD64>(pc), nullptr, symbol)) {
+    return false;
+  }
+  strncpy(out, symbol->Name, out_size);
+  if (out[out_size - 1] != '\0') {
+    // strncpy() does not '\0' terminate when it truncates.
+    static constexpr char kEllipsis[] = "...";
+    int ellipsis_size =
+        std::min<int>(sizeof(kEllipsis) - 1, out_size - 1);
+    memcpy(out + out_size - ellipsis_size - 1, kEllipsis, ellipsis_size);
+    out[out_size - 1] = '\0';
+  }
+  return true;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/hash/hash.h b/ChattingApp 000/Pods/abseil/absl/hash/hash.h
new file mode 100644
index 0000000..23a65ea
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/hash/hash.h	
@@ -0,0 +1,324 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: hash.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the Abseil `hash` library and the Abseil hashing
+// framework. This framework consists of the following:
+//
+//   * The `absl::Hash` functor, which is used to invoke the hasher within the
+//     Abseil hashing framework. `absl::Hash<T>` supports most basic types and
+//     a number of Abseil types out of the box.
+//   * `AbslHashValue`, an extension point that allows you to extend types to
+//     support Abseil hashing without requiring you to define a hashing
+//     algorithm.
+//   * `HashState`, a type-erased class which implements the manipulation of the
+//     hash state (H) itself, contains member functions `combine()` and
+//     `combine_contiguous()`, which you can use to contribute to an existing
+//     hash state when hashing your types.
+//
+// Unlike `std::hash` or other hashing frameworks, the Abseil hashing framework
+// provides most of its utility by abstracting away the hash algorithm (and its
+// implementation) entirely. Instead, a type invokes the Abseil hashing
+// framework by simply combining its state with the state of known, hashable
+// types. Hashing of that combined state is separately done by `absl::Hash`.
+//
+// One should assume that a hash algorithm is chosen randomly at the start of
+// each process.  E.g., absl::Hash<int>()(9) in one process and
+// absl::Hash<int>()(9) in another process are likely to differ.
+//
+// Example:
+//
+//   // Suppose we have a class `Circle` for which we want to add hashing:
+//   class Circle {
+//    public:
+//     ...
+//    private:
+//     std::pair<int, int> center_;
+//     int radius_;
+//   };
+//
+//   // To add hashing support to `Circle`, we simply need to add a free
+//   // (non-member) function `AbslHashValue()`, and return the combined hash
+//   // state of the existing hash state and the class state. You can add such a
+//   // free function using a friend declaration within the body of the class:
+//   class Circle {
+//    public:
+//     ...
+//     template <typename H>
+//     friend H AbslHashValue(H h, const Circle& c) {
+//       return H::combine(std::move(h), c.center_, c.radius_);
+//     }
+//     ...
+//   };
+//
+// For more information, see Adding Type Support to `absl::Hash` below.
+//
+#ifndef ABSL_HASH_HASH_H_
+#define ABSL_HASH_HASH_H_
+
+#include "absl/hash/internal/hash.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// `absl::Hash`
+// -----------------------------------------------------------------------------
+//
+// `absl::Hash<T>` is a convenient general-purpose hash functor for any type `T`
+// satisfying any of the following conditions (in order):
+//
+//  * T is an arithmetic or pointer type
+//  * T defines an overload for `AbslHashValue(H, const T&)` for an arbitrary
+//    hash state `H`.
+//  - T defines a specialization of `HASH_NAMESPACE::hash<T>`
+//  - T defines a specialization of `std::hash<T>`
+//
+// `absl::Hash` intrinsically supports the following types:
+//
+//   * All integral types (including bool)
+//   * All enum types
+//   * All floating-point types (although hashing them is discouraged)
+//   * All pointer types, including nullptr_t
+//   * std::pair<T1, T2>, if T1 and T2 are hashable
+//   * std::tuple<Ts...>, if all the Ts... are hashable
+//   * std::unique_ptr and std::shared_ptr
+//   * All string-like types including:
+//     * std::string
+//     * std::string_view (as well as any instance of std::basic_string that
+//       uses char and std::char_traits)
+//  * All the standard sequence containers (provided the elements are hashable)
+//  * All the standard ordered associative containers (provided the elements are
+//    hashable)
+//  * absl types such as the following:
+//    * absl::string_view
+//    * absl::InlinedVector
+//    * absl::FixedArray
+//    * absl::uint128
+//    * absl::Time, absl::Duration, and absl::TimeZone
+//
+// Note: the list above is not meant to be exhaustive. Additional type support
+// may be added, in which case the above list will be updated.
+//
+// -----------------------------------------------------------------------------
+// absl::Hash Invocation Evaluation
+// -----------------------------------------------------------------------------
+//
+// When invoked, `absl::Hash<T>` searches for supplied hash functions in the
+// following order:
+//
+//   * Natively supported types out of the box (see above)
+//   * Types for which an `AbslHashValue()` overload is provided (such as
+//     user-defined types). See "Adding Type Support to `absl::Hash`" below.
+//   * Types which define a `HASH_NAMESPACE::hash<T>` specialization (aka
+//     `__gnu_cxx::hash<T>` for gcc/Clang or `stdext::hash<T>` for MSVC)
+//   * Types which define a `std::hash<T>` specialization
+//
+// The fallback to legacy hash functions exists mainly for backwards
+// compatibility. If you have a choice, prefer defining an `AbslHashValue`
+// overload instead of specializing any legacy hash functors.
+//
+// -----------------------------------------------------------------------------
+// The Hash State Concept, and using `HashState` for Type Erasure
+// -----------------------------------------------------------------------------
+//
+// The `absl::Hash` framework relies on the Concept of a "hash state." Such a
+// hash state is used in several places:
+//
+// * Within existing implementations of `absl::Hash<T>` to store the hashed
+//   state of an object. Note that it is up to the implementation how it stores
+//   such state. A hash table, for example, may mix the state to produce an
+//   integer value; a testing framework may simply hold a vector of that state.
+// * Within implementations of `AbslHashValue()` used to extend user-defined
+//   types. (See "Adding Type Support to absl::Hash" below.)
+// * Inside a `HashState`, providing type erasure for the concept of a hash
+//   state, which you can use to extend the `absl::Hash` framework for types
+//   that are otherwise difficult to extend using `AbslHashValue()`. (See the
+//   `HashState` class below.)
+//
+// The "hash state" concept contains two member functions for mixing hash state:
+//
+// * `H::combine(state, values...)`
+//
+//   Combines an arbitrary number of values into a hash state, returning the
+//   updated state. Note that the existing hash state is move-only and must be
+//   passed by value.
+//
+//   Each of the value types T must be hashable by H.
+//
+//   NOTE:
+//
+//     state = H::combine(std::move(state), value1, value2, value3);
+//
+//   must be guaranteed to produce the same hash expansion as
+//
+//     state = H::combine(std::move(state), value1);
+//     state = H::combine(std::move(state), value2);
+//     state = H::combine(std::move(state), value3);
+//
+// * `H::combine_contiguous(state, data, size)`
+//
+//    Combines a contiguous array of `size` elements into a hash state,
+//    returning the updated state. Note that the existing hash state is
+//    move-only and must be passed by value.
+//
+//    NOTE:
+//
+//      state = H::combine_contiguous(std::move(state), data, size);
+//
+//    need NOT be guaranteed to produce the same hash expansion as a loop
+//    (it may perform internal optimizations). If you need this guarantee, use a
+//    loop instead.
+//
+// -----------------------------------------------------------------------------
+// Adding Type Support to `absl::Hash`
+// -----------------------------------------------------------------------------
+//
+// To add support for your user-defined type, add a proper `AbslHashValue()`
+// overload as a free (non-member) function. The overload will take an
+// existing hash state and should combine that state with state from the type.
+//
+// Example:
+//
+//   template <typename H>
+//   H AbslHashValue(H state, const MyType& v) {
+//     return H::combine(std::move(state), v.field1, ..., v.fieldN);
+//   }
+//
+// where `(field1, ..., fieldN)` are the members you would use on your
+// `operator==` to define equality.
+//
+// Notice that `AbslHashValue` is not a class member, but an ordinary function.
+// An `AbslHashValue` overload for a type should only be declared in the same
+// file and namespace as said type. The proper `AbslHashValue` implementation
+// for a given type will be discovered via ADL.
+//
+// Note: unlike `std::hash', `absl::Hash` should never be specialized. It must
+// only be extended by adding `AbslHashValue()` overloads.
+//
+template <typename T>
+using Hash = absl::hash_internal::Hash<T>;
+
+// HashState
+//
+// A type erased version of the hash state concept, for use in user-defined
+// `AbslHashValue` implementations that can't use templates (such as PImpl
+// classes, virtual functions, etc.). The type erasure adds overhead so it
+// should be avoided unless necessary.
+//
+// Note: This wrapper will only erase calls to:
+//     combine_contiguous(H, const unsigned char*, size_t)
+//
+// All other calls will be handled internally and will not invoke overloads
+// provided by the wrapped class.
+//
+// Users of this class should still define a template `AbslHashValue` function,
+// but can use `absl::HashState::Create(&state)` to erase the type of the hash
+// state and dispatch to their private hashing logic.
+//
+// This state can be used like any other hash state. In particular, you can call
+// `HashState::combine()` and `HashState::combine_contiguous()` on it.
+//
+// Example:
+//
+//   class Interface {
+//    public:
+//     template <typename H>
+//     friend H AbslHashValue(H state, const Interface& value) {
+//       state = H::combine(std::move(state), std::type_index(typeid(*this)));
+//       value.HashValue(absl::HashState::Create(&state));
+//       return state;
+//     }
+//    private:
+//     virtual void HashValue(absl::HashState state) const = 0;
+//   };
+//
+//   class Impl : Interface {
+//    private:
+//     void HashValue(absl::HashState state) const override {
+//       absl::HashState::combine(std::move(state), v1_, v2_);
+//     }
+//     int v1_;
+//     std::string v2_;
+//   };
+class HashState : public hash_internal::HashStateBase<HashState> {
+ public:
+  // HashState::Create()
+  //
+  // Create a new `HashState` instance that wraps `state`. All calls to
+  // `combine()` and `combine_contiguous()` on the new instance will be
+  // redirected to the original `state` object. The `state` object must outlive
+  // the `HashState` instance.
+  template <typename T>
+  static HashState Create(T* state) {
+    HashState s;
+    s.Init(state);
+    return s;
+  }
+
+  HashState(const HashState&) = delete;
+  HashState& operator=(const HashState&) = delete;
+  HashState(HashState&&) = default;
+  HashState& operator=(HashState&&) = default;
+
+  // HashState::combine()
+  //
+  // Combines an arbitrary number of values into a hash state, returning the
+  // updated state.
+  using HashState::HashStateBase::combine;
+
+  // HashState::combine_contiguous()
+  //
+  // Combines a contiguous array of `size` elements into a hash state, returning
+  // the updated state.
+  static HashState combine_contiguous(HashState hash_state,
+                                      const unsigned char* first, size_t size) {
+    hash_state.combine_contiguous_(hash_state.state_, first, size);
+    return hash_state;
+  }
+  using HashState::HashStateBase::combine_contiguous;
+
+ private:
+  HashState() = default;
+
+  template <typename T>
+  static void CombineContiguousImpl(void* p, const unsigned char* first,
+                                    size_t size) {
+    T& state = *static_cast<T*>(p);
+    state = T::combine_contiguous(std::move(state), first, size);
+  }
+
+  template <typename T>
+  void Init(T* state) {
+    state_ = state;
+    combine_contiguous_ = &CombineContiguousImpl<T>;
+  }
+
+  // Do not erase an already erased state.
+  void Init(HashState* state) {
+    state_ = state->state_;
+    combine_contiguous_ = state->combine_contiguous_;
+  }
+
+  void* state_;
+  void (*combine_contiguous_)(void*, const unsigned char*, size_t);
+};
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HASH_HASH_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/hash/internal/city.cc b/ChattingApp 000/Pods/abseil/absl/hash/internal/city.cc
new file mode 100644
index 0000000..e122c18
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/hash/internal/city.cc	
@@ -0,0 +1,346 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file provides CityHash64() and related functions.
+//
+// It's probably possible to create even faster hash functions by
+// writing a program that systematically explores some of the space of
+// possible hash functions, by using SIMD instructions, or by
+// compromising on hash quality.
+
+#include "absl/hash/internal/city.h"
+
+#include <string.h>  // for memcpy and memset
+#include <algorithm>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/endian.h"
+#include "absl/base/internal/unaligned_access.h"
+#include "absl/base/optimization.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace hash_internal {
+
+#ifdef ABSL_IS_BIG_ENDIAN
+#define uint32_in_expected_order(x) (absl::gbswap_32(x))
+#define uint64_in_expected_order(x) (absl::gbswap_64(x))
+#else
+#define uint32_in_expected_order(x) (x)
+#define uint64_in_expected_order(x) (x)
+#endif
+
+static uint64_t Fetch64(const char *p) {
+  return uint64_in_expected_order(ABSL_INTERNAL_UNALIGNED_LOAD64(p));
+}
+
+static uint32_t Fetch32(const char *p) {
+  return uint32_in_expected_order(ABSL_INTERNAL_UNALIGNED_LOAD32(p));
+}
+
+// Some primes between 2^63 and 2^64 for various uses.
+static const uint64_t k0 = 0xc3a5c85c97cb3127ULL;
+static const uint64_t k1 = 0xb492b66fbe98f273ULL;
+static const uint64_t k2 = 0x9ae16a3b2f90404fULL;
+
+// Magic numbers for 32-bit hashing.  Copied from Murmur3.
+static const uint32_t c1 = 0xcc9e2d51;
+static const uint32_t c2 = 0x1b873593;
+
+// A 32-bit to 32-bit integer hash copied from Murmur3.
+static uint32_t fmix(uint32_t h) {
+  h ^= h >> 16;
+  h *= 0x85ebca6b;
+  h ^= h >> 13;
+  h *= 0xc2b2ae35;
+  h ^= h >> 16;
+  return h;
+}
+
+static uint32_t Rotate32(uint32_t val, int shift) {
+  // Avoid shifting by 32: doing so yields an undefined result.
+  return shift == 0 ? val : ((val >> shift) | (val << (32 - shift)));
+}
+
+#undef PERMUTE3
+#define PERMUTE3(a, b, c) \
+  do {                    \
+    std::swap(a, b);      \
+    std::swap(a, c);      \
+  } while (0)
+
+static uint32_t Mur(uint32_t a, uint32_t h) {
+  // Helper from Murmur3 for combining two 32-bit values.
+  a *= c1;
+  a = Rotate32(a, 17);
+  a *= c2;
+  h ^= a;
+  h = Rotate32(h, 19);
+  return h * 5 + 0xe6546b64;
+}
+
+static uint32_t Hash32Len13to24(const char *s, size_t len) {
+  uint32_t a = Fetch32(s - 4 + (len >> 1));
+  uint32_t b = Fetch32(s + 4);
+  uint32_t c = Fetch32(s + len - 8);
+  uint32_t d = Fetch32(s + (len >> 1));
+  uint32_t e = Fetch32(s);
+  uint32_t f = Fetch32(s + len - 4);
+  uint32_t h = len;
+
+  return fmix(Mur(f, Mur(e, Mur(d, Mur(c, Mur(b, Mur(a, h)))))));
+}
+
+static uint32_t Hash32Len0to4(const char *s, size_t len) {
+  uint32_t b = 0;
+  uint32_t c = 9;
+  for (size_t i = 0; i < len; i++) {
+    signed char v = s[i];
+    b = b * c1 + v;
+    c ^= b;
+  }
+  return fmix(Mur(b, Mur(len, c)));
+}
+
+static uint32_t Hash32Len5to12(const char *s, size_t len) {
+  uint32_t a = len, b = len * 5, c = 9, d = b;
+  a += Fetch32(s);
+  b += Fetch32(s + len - 4);
+  c += Fetch32(s + ((len >> 1) & 4));
+  return fmix(Mur(c, Mur(b, Mur(a, d))));
+}
+
+uint32_t CityHash32(const char *s, size_t len) {
+  if (len <= 24) {
+    return len <= 12
+               ? (len <= 4 ? Hash32Len0to4(s, len) : Hash32Len5to12(s, len))
+               : Hash32Len13to24(s, len);
+  }
+
+  // len > 24
+  uint32_t h = len, g = c1 * len, f = g;
+
+  uint32_t a0 = Rotate32(Fetch32(s + len - 4) * c1, 17) * c2;
+  uint32_t a1 = Rotate32(Fetch32(s + len - 8) * c1, 17) * c2;
+  uint32_t a2 = Rotate32(Fetch32(s + len - 16) * c1, 17) * c2;
+  uint32_t a3 = Rotate32(Fetch32(s + len - 12) * c1, 17) * c2;
+  uint32_t a4 = Rotate32(Fetch32(s + len - 20) * c1, 17) * c2;
+  h ^= a0;
+  h = Rotate32(h, 19);
+  h = h * 5 + 0xe6546b64;
+  h ^= a2;
+  h = Rotate32(h, 19);
+  h = h * 5 + 0xe6546b64;
+  g ^= a1;
+  g = Rotate32(g, 19);
+  g = g * 5 + 0xe6546b64;
+  g ^= a3;
+  g = Rotate32(g, 19);
+  g = g * 5 + 0xe6546b64;
+  f += a4;
+  f = Rotate32(f, 19);
+  f = f * 5 + 0xe6546b64;
+  size_t iters = (len - 1) / 20;
+  do {
+    uint32_t b0 = Rotate32(Fetch32(s) * c1, 17) * c2;
+    uint32_t b1 = Fetch32(s + 4);
+    uint32_t b2 = Rotate32(Fetch32(s + 8) * c1, 17) * c2;
+    uint32_t b3 = Rotate32(Fetch32(s + 12) * c1, 17) * c2;
+    uint32_t b4 = Fetch32(s + 16);
+    h ^= b0;
+    h = Rotate32(h, 18);
+    h = h * 5 + 0xe6546b64;
+    f += b1;
+    f = Rotate32(f, 19);
+    f = f * c1;
+    g += b2;
+    g = Rotate32(g, 18);
+    g = g * 5 + 0xe6546b64;
+    h ^= b3 + b1;
+    h = Rotate32(h, 19);
+    h = h * 5 + 0xe6546b64;
+    g ^= b4;
+    g = absl::gbswap_32(g) * 5;
+    h += b4 * 5;
+    h = absl::gbswap_32(h);
+    f += b0;
+    PERMUTE3(f, h, g);
+    s += 20;
+  } while (--iters != 0);
+  g = Rotate32(g, 11) * c1;
+  g = Rotate32(g, 17) * c1;
+  f = Rotate32(f, 11) * c1;
+  f = Rotate32(f, 17) * c1;
+  h = Rotate32(h + g, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate32(h, 17) * c1;
+  h = Rotate32(h + f, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate32(h, 17) * c1;
+  return h;
+}
+
+// Bitwise right rotate.  Normally this will compile to a single
+// instruction, especially if the shift is a manifest constant.
+static uint64_t Rotate(uint64_t val, int shift) {
+  // Avoid shifting by 64: doing so yields an undefined result.
+  return shift == 0 ? val : ((val >> shift) | (val << (64 - shift)));
+}
+
+static uint64_t ShiftMix(uint64_t val) { return val ^ (val >> 47); }
+
+static uint64_t HashLen16(uint64_t u, uint64_t v) {
+  return Hash128to64(uint128(u, v));
+}
+
+static uint64_t HashLen16(uint64_t u, uint64_t v, uint64_t mul) {
+  // Murmur-inspired hashing.
+  uint64_t a = (u ^ v) * mul;
+  a ^= (a >> 47);
+  uint64_t b = (v ^ a) * mul;
+  b ^= (b >> 47);
+  b *= mul;
+  return b;
+}
+
+static uint64_t HashLen0to16(const char *s, size_t len) {
+  if (len >= 8) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch64(s) + k2;
+    uint64_t b = Fetch64(s + len - 8);
+    uint64_t c = Rotate(b, 37) * mul + a;
+    uint64_t d = (Rotate(a, 25) + b) * mul;
+    return HashLen16(c, d, mul);
+  }
+  if (len >= 4) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch32(s);
+    return HashLen16(len + (a << 3), Fetch32(s + len - 4), mul);
+  }
+  if (len > 0) {
+    uint8_t a = s[0];
+    uint8_t b = s[len >> 1];
+    uint8_t c = s[len - 1];
+    uint32_t y = static_cast<uint32_t>(a) + (static_cast<uint32_t>(b) << 8);
+    uint32_t z = len + (static_cast<uint32_t>(c) << 2);
+    return ShiftMix(y * k2 ^ z * k0) * k2;
+  }
+  return k2;
+}
+
+// This probably works well for 16-byte strings as well, but it may be overkill
+// in that case.
+static uint64_t HashLen17to32(const char *s, size_t len) {
+  uint64_t mul = k2 + len * 2;
+  uint64_t a = Fetch64(s) * k1;
+  uint64_t b = Fetch64(s + 8);
+  uint64_t c = Fetch64(s + len - 8) * mul;
+  uint64_t d = Fetch64(s + len - 16) * k2;
+  return HashLen16(Rotate(a + b, 43) + Rotate(c, 30) + d,
+                   a + Rotate(b + k2, 18) + c, mul);
+}
+
+// Return a 16-byte hash for 48 bytes.  Quick and dirty.
+// Callers do best to use "random-looking" values for a and b.
+static std::pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(uint64_t w, uint64_t x,
+                                                        uint64_t y, uint64_t z,
+                                                        uint64_t a, uint64_t b) {
+  a += w;
+  b = Rotate(b + a + z, 21);
+  uint64_t c = a;
+  a += x;
+  a += y;
+  b += Rotate(a, 44);
+  return std::make_pair(a + z, b + c);
+}
+
+// Return a 16-byte hash for s[0] ... s[31], a, and b.  Quick and dirty.
+static std::pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(const char *s, uint64_t a,
+                                                        uint64_t b) {
+  return WeakHashLen32WithSeeds(Fetch64(s), Fetch64(s + 8), Fetch64(s + 16),
+                                Fetch64(s + 24), a, b);
+}
+
+// Return an 8-byte hash for 33 to 64 bytes.
+static uint64_t HashLen33to64(const char *s, size_t len) {
+  uint64_t mul = k2 + len * 2;
+  uint64_t a = Fetch64(s) * k2;
+  uint64_t b = Fetch64(s + 8);
+  uint64_t c = Fetch64(s + len - 24);
+  uint64_t d = Fetch64(s + len - 32);
+  uint64_t e = Fetch64(s + 16) * k2;
+  uint64_t f = Fetch64(s + 24) * 9;
+  uint64_t g = Fetch64(s + len - 8);
+  uint64_t h = Fetch64(s + len - 16) * mul;
+  uint64_t u = Rotate(a + g, 43) + (Rotate(b, 30) + c) * 9;
+  uint64_t v = ((a + g) ^ d) + f + 1;
+  uint64_t w = absl::gbswap_64((u + v) * mul) + h;
+  uint64_t x = Rotate(e + f, 42) + c;
+  uint64_t y = (absl::gbswap_64((v + w) * mul) + g) * mul;
+  uint64_t z = e + f + c;
+  a = absl::gbswap_64((x + z) * mul + y) + b;
+  b = ShiftMix((z + a) * mul + d + h) * mul;
+  return b + x;
+}
+
+uint64_t CityHash64(const char *s, size_t len) {
+  if (len <= 32) {
+    if (len <= 16) {
+      return HashLen0to16(s, len);
+    } else {
+      return HashLen17to32(s, len);
+    }
+  } else if (len <= 64) {
+    return HashLen33to64(s, len);
+  }
+
+  // For strings over 64 bytes we hash the end first, and then as we
+  // loop we keep 56 bytes of state: v, w, x, y, and z.
+  uint64_t x = Fetch64(s + len - 40);
+  uint64_t y = Fetch64(s + len - 16) + Fetch64(s + len - 56);
+  uint64_t z = HashLen16(Fetch64(s + len - 48) + len, Fetch64(s + len - 24));
+  std::pair<uint64_t, uint64_t> v = WeakHashLen32WithSeeds(s + len - 64, len, z);
+  std::pair<uint64_t, uint64_t> w = WeakHashLen32WithSeeds(s + len - 32, y + k1, x);
+  x = x * k1 + Fetch64(s);
+
+  // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks.
+  len = (len - 1) & ~static_cast<size_t>(63);
+  do {
+    x = Rotate(x + y + v.first + Fetch64(s + 8), 37) * k1;
+    y = Rotate(y + v.second + Fetch64(s + 48), 42) * k1;
+    x ^= w.second;
+    y += v.first + Fetch64(s + 40);
+    z = Rotate(z + w.first, 33) * k1;
+    v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
+    w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch64(s + 16));
+    std::swap(z, x);
+    s += 64;
+    len -= 64;
+  } while (len != 0);
+  return HashLen16(HashLen16(v.first, w.first) + ShiftMix(y) * k1 + z,
+                   HashLen16(v.second, w.second) + x);
+}
+
+uint64_t CityHash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  return CityHash64WithSeeds(s, len, k2, seed);
+}
+
+uint64_t CityHash64WithSeeds(const char *s, size_t len, uint64_t seed0,
+                           uint64_t seed1) {
+  return HashLen16(CityHash64(s, len) - seed0, seed1);
+}
+
+}  // namespace hash_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/hash/internal/city.h b/ChattingApp 000/Pods/abseil/absl/hash/internal/city.h
new file mode 100644
index 0000000..161c774
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/hash/internal/city.h	
@@ -0,0 +1,96 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// https://code.google.com/p/cityhash/
+//
+// This file provides a few functions for hashing strings.  All of them are
+// high-quality functions in the sense that they pass standard tests such
+// as Austin Appleby's SMHasher.  They are also fast.
+//
+// For 64-bit x86 code, on short strings, we don't know of anything faster than
+// CityHash64 that is of comparable quality.  We believe our nearest competitor
+// is Murmur3.  For 64-bit x86 code, CityHash64 is an excellent choice for hash
+// tables and most other hashing (excluding cryptography).
+//
+// For 32-bit x86 code, we don't know of anything faster than CityHash32 that
+// is of comparable quality.  We believe our nearest competitor is Murmur3A.
+// (On 64-bit CPUs, it is typically faster to use the other CityHash variants.)
+//
+// Functions in the CityHash family are not suitable for cryptography.
+//
+// Please see CityHash's README file for more details on our performance
+// measurements and so on.
+//
+// WARNING: This code has been only lightly tested on big-endian platforms!
+// It is known to work well on little-endian platforms that have a small penalty
+// for unaligned reads, such as current Intel and AMD moderate-to-high-end CPUs.
+// It should work on all 32-bit and 64-bit platforms that allow unaligned reads;
+// bug reports are welcome.
+//
+// By the way, for some hash functions, given strings a and b, the hash
+// of a+b is easily derived from the hashes of a and b.  This property
+// doesn't hold for any hash functions in this file.
+
+#ifndef ABSL_HASH_INTERNAL_CITY_H_
+#define ABSL_HASH_INTERNAL_CITY_H_
+
+#include <stdint.h>
+#include <stdlib.h>  // for size_t.
+
+#include <utility>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace hash_internal {
+
+typedef std::pair<uint64_t, uint64_t> uint128;
+
+inline uint64_t Uint128Low64(const uint128 &x) { return x.first; }
+inline uint64_t Uint128High64(const uint128 &x) { return x.second; }
+
+// Hash function for a byte array.
+uint64_t CityHash64(const char *s, size_t len);
+
+// Hash function for a byte array.  For convenience, a 64-bit seed is also
+// hashed into the result.
+uint64_t CityHash64WithSeed(const char *s, size_t len, uint64_t seed);
+
+// Hash function for a byte array.  For convenience, two seeds are also
+// hashed into the result.
+uint64_t CityHash64WithSeeds(const char *s, size_t len, uint64_t seed0,
+                           uint64_t seed1);
+
+// Hash function for a byte array.  Most useful in 32-bit binaries.
+uint32_t CityHash32(const char *s, size_t len);
+
+// Hash 128 input bits down to 64 bits of output.
+// This is intended to be a reasonably good hash function.
+inline uint64_t Hash128to64(const uint128 &x) {
+  // Murmur-inspired hashing.
+  const uint64_t kMul = 0x9ddfea08eb382d69ULL;
+  uint64_t a = (Uint128Low64(x) ^ Uint128High64(x)) * kMul;
+  a ^= (a >> 47);
+  uint64_t b = (Uint128High64(x) ^ a) * kMul;
+  b ^= (b >> 47);
+  b *= kMul;
+  return b;
+}
+
+}  // namespace hash_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HASH_INTERNAL_CITY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.cc b/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.cc
new file mode 100644
index 0000000..b44ecb3
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.cc	
@@ -0,0 +1,55 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/hash/internal/hash.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace hash_internal {
+
+uint64_t CityHashState::CombineLargeContiguousImpl32(uint64_t state,
+                                                     const unsigned char* first,
+                                                     size_t len) {
+  while (len >= PiecewiseChunkSize()) {
+    state =
+        Mix(state, absl::hash_internal::CityHash32(reinterpret_cast<const char*>(first),
+                                         PiecewiseChunkSize()));
+    len -= PiecewiseChunkSize();
+    first += PiecewiseChunkSize();
+  }
+  // Handle the remainder.
+  return CombineContiguousImpl(state, first, len,
+                               std::integral_constant<int, 4>{});
+}
+
+uint64_t CityHashState::CombineLargeContiguousImpl64(uint64_t state,
+                                                     const unsigned char* first,
+                                                     size_t len) {
+  while (len >= PiecewiseChunkSize()) {
+    state =
+        Mix(state, absl::hash_internal::CityHash64(reinterpret_cast<const char*>(first),
+                                         PiecewiseChunkSize()));
+    len -= PiecewiseChunkSize();
+    first += PiecewiseChunkSize();
+  }
+  // Handle the remainder.
+  return CombineContiguousImpl(state, first, len,
+                               std::integral_constant<int, 8>{});
+}
+
+ABSL_CONST_INIT const void* const CityHashState::kSeed = &kSeed;
+
+}  // namespace hash_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.h b/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.h
new file mode 100644
index 0000000..ae7a60c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/hash/internal/hash.h	
@@ -0,0 +1,988 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: hash.h
+// -----------------------------------------------------------------------------
+//
+#ifndef ABSL_HASH_INTERNAL_HASH_H_
+#define ABSL_HASH_INTERNAL_HASH_H_
+
+#include <algorithm>
+#include <array>
+#include <cmath>
+#include <cstring>
+#include <deque>
+#include <forward_list>
+#include <functional>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "absl/base/internal/endian.h"
+#include "absl/base/port.h"
+#include "absl/container/fixed_array.h"
+#include "absl/meta/type_traits.h"
+#include "absl/numeric/int128.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "absl/types/variant.h"
+#include "absl/utility/utility.h"
+#include "absl/hash/internal/city.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace hash_internal {
+
+class PiecewiseCombiner;
+
+// Internal detail: Large buffers are hashed in smaller chunks.  This function
+// returns the size of these chunks.
+constexpr size_t PiecewiseChunkSize() { return 1024; }
+
+// HashStateBase
+//
+// A hash state object represents an intermediate state in the computation
+// of an unspecified hash algorithm. `HashStateBase` provides a CRTP style
+// base class for hash state implementations. Developers adding type support
+// for `absl::Hash` should not rely on any parts of the state object other than
+// the following member functions:
+//
+//   * HashStateBase::combine()
+//   * HashStateBase::combine_contiguous()
+//
+// A derived hash state class of type `H` must provide a static member function
+// with a signature similar to the following:
+//
+//    `static H combine_contiguous(H state, const unsigned char*, size_t)`.
+//
+// `HashStateBase` will provide a complete implementation for a hash state
+// object in terms of this method.
+//
+// Example:
+//
+//   // Use CRTP to define your derived class.
+//   struct MyHashState : HashStateBase<MyHashState> {
+//       static H combine_contiguous(H state, const unsigned char*, size_t);
+//       using MyHashState::HashStateBase::combine;
+//       using MyHashState::HashStateBase::combine_contiguous;
+//   };
+template <typename H>
+class HashStateBase {
+ public:
+  // HashStateBase::combine()
+  //
+  // Combines an arbitrary number of values into a hash state, returning the
+  // updated state.
+  //
+  // Each of the value types `T` must be separately hashable by the Abseil
+  // hashing framework.
+  //
+  // NOTE:
+  //
+  //   state = H::combine(std::move(state), value1, value2, value3);
+  //
+  // is guaranteed to produce the same hash expansion as:
+  //
+  //   state = H::combine(std::move(state), value1);
+  //   state = H::combine(std::move(state), value2);
+  //   state = H::combine(std::move(state), value3);
+  template <typename T, typename... Ts>
+  static H combine(H state, const T& value, const Ts&... values);
+  static H combine(H state) { return state; }
+
+  // HashStateBase::combine_contiguous()
+  //
+  // Combines a contiguous array of `size` elements into a hash state, returning
+  // the updated state.
+  //
+  // NOTE:
+  //
+  //   state = H::combine_contiguous(std::move(state), data, size);
+  //
+  // is NOT guaranteed to produce the same hash expansion as a for-loop (it may
+  // perform internal optimizations).  If you need this guarantee, use the
+  // for-loop instead.
+  template <typename T>
+  static H combine_contiguous(H state, const T* data, size_t size);
+
+ private:
+  friend class PiecewiseCombiner;
+};
+
+// is_uniquely_represented
+//
+// `is_uniquely_represented<T>` is a trait class that indicates whether `T`
+// is uniquely represented.
+//
+// A type is "uniquely represented" if two equal values of that type are
+// guaranteed to have the same bytes in their underlying storage. In other
+// words, if `a == b`, then `memcmp(&a, &b, sizeof(T))` is guaranteed to be
+// zero. This property cannot be detected automatically, so this trait is false
+// by default, but can be specialized by types that wish to assert that they are
+// uniquely represented. This makes them eligible for certain optimizations.
+//
+// If you have any doubt whatsoever, do not specialize this template.
+// The default is completely safe, and merely disables some optimizations
+// that will not matter for most types. Specializing this template,
+// on the other hand, can be very hazardous.
+//
+// To be uniquely represented, a type must not have multiple ways of
+// representing the same value; for example, float and double are not
+// uniquely represented, because they have distinct representations for
+// +0 and -0. Furthermore, the type's byte representation must consist
+// solely of user-controlled data, with no padding bits and no compiler-
+// controlled data such as vptrs or sanitizer metadata. This is usually
+// very difficult to guarantee, because in most cases the compiler can
+// insert data and padding bits at its own discretion.
+//
+// If you specialize this template for a type `T`, you must do so in the file
+// that defines that type (or in this file). If you define that specialization
+// anywhere else, `is_uniquely_represented<T>` could have different meanings
+// in different places.
+//
+// The Enable parameter is meaningless; it is provided as a convenience,
+// to support certain SFINAE techniques when defining specializations.
+template <typename T, typename Enable = void>
+struct is_uniquely_represented : std::false_type {};
+
+// is_uniquely_represented<unsigned char>
+//
+// unsigned char is a synonym for "byte", so it is guaranteed to be
+// uniquely represented.
+template <>
+struct is_uniquely_represented<unsigned char> : std::true_type {};
+
+// is_uniquely_represented for non-standard integral types
+//
+// Integral types other than bool should be uniquely represented on any
+// platform that this will plausibly be ported to.
+template <typename Integral>
+struct is_uniquely_represented<
+    Integral, typename std::enable_if<std::is_integral<Integral>::value>::type>
+    : std::true_type {};
+
+// is_uniquely_represented<bool>
+//
+//
+template <>
+struct is_uniquely_represented<bool> : std::false_type {};
+
+// hash_bytes()
+//
+// Convenience function that combines `hash_state` with the byte representation
+// of `value`.
+template <typename H, typename T>
+H hash_bytes(H hash_state, const T& value) {
+  const unsigned char* start = reinterpret_cast<const unsigned char*>(&value);
+  return H::combine_contiguous(std::move(hash_state), start, sizeof(value));
+}
+
+// PiecewiseCombiner
+//
+// PiecewiseCombiner is an internal-only helper class for hashing a piecewise
+// buffer of `char` or `unsigned char` as though it were contiguous.  This class
+// provides two methods:
+//
+//   H add_buffer(state, data, size)
+//   H finalize(state)
+//
+// `add_buffer` can be called zero or more times, followed by a single call to
+// `finalize`.  This will produce the same hash expansion as concatenating each
+// buffer piece into a single contiguous buffer, and passing this to
+// `H::combine_contiguous`.
+//
+//  Example usage:
+//    PiecewiseCombiner combiner;
+//    for (const auto& piece : pieces) {
+//      state = combiner.add_buffer(std::move(state), piece.data, piece.size);
+//    }
+//    return combiner.finalize(std::move(state));
+class PiecewiseCombiner {
+ public:
+  PiecewiseCombiner() : position_(0) {}
+  PiecewiseCombiner(const PiecewiseCombiner&) = delete;
+  PiecewiseCombiner& operator=(const PiecewiseCombiner&) = delete;
+
+  // PiecewiseCombiner::add_buffer()
+  //
+  // Appends the given range of bytes to the sequence to be hashed, which may
+  // modify the provided hash state.
+  template <typename H>
+  H add_buffer(H state, const unsigned char* data, size_t size);
+  template <typename H>
+  H add_buffer(H state, const char* data, size_t size) {
+    return add_buffer(std::move(state),
+                      reinterpret_cast<const unsigned char*>(data), size);
+  }
+
+  // PiecewiseCombiner::finalize()
+  //
+  // Finishes combining the hash sequence, which may may modify the provided
+  // hash state.
+  //
+  // Once finalize() is called, add_buffer() may no longer be called. The
+  // resulting hash state will be the same as if the pieces passed to
+  // add_buffer() were concatenated into a single flat buffer, and then provided
+  // to H::combine_contiguous().
+  template <typename H>
+  H finalize(H state);
+
+ private:
+  unsigned char buf_[PiecewiseChunkSize()];
+  size_t position_;
+};
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Basic Types
+// -----------------------------------------------------------------------------
+
+// Note: Default `AbslHashValue` implementations live in `hash_internal`. This
+// allows us to block lexical scope lookup when doing an unqualified call to
+// `AbslHashValue` below. User-defined implementations of `AbslHashValue` can
+// only be found via ADL.
+
+// AbslHashValue() for hashing bool values
+//
+// We use SFINAE to ensure that this overload only accepts bool, not types that
+// are convertible to bool.
+template <typename H, typename B>
+typename std::enable_if<std::is_same<B, bool>::value, H>::type AbslHashValue(
+    H hash_state, B value) {
+  return H::combine(std::move(hash_state),
+                    static_cast<unsigned char>(value ? 1 : 0));
+}
+
+// AbslHashValue() for hashing enum values
+template <typename H, typename Enum>
+typename std::enable_if<std::is_enum<Enum>::value, H>::type AbslHashValue(
+    H hash_state, Enum e) {
+  // In practice, we could almost certainly just invoke hash_bytes directly,
+  // but it's possible that a sanitizer might one day want to
+  // store data in the unused bits of an enum. To avoid that risk, we
+  // convert to the underlying type before hashing. Hopefully this will get
+  // optimized away; if not, we can reopen discussion with c-toolchain-team.
+  return H::combine(std::move(hash_state),
+                    static_cast<typename std::underlying_type<Enum>::type>(e));
+}
+// AbslHashValue() for hashing floating-point values
+template <typename H, typename Float>
+typename std::enable_if<std::is_same<Float, float>::value ||
+                            std::is_same<Float, double>::value,
+                        H>::type
+AbslHashValue(H hash_state, Float value) {
+  return hash_internal::hash_bytes(std::move(hash_state),
+                                   value == 0 ? 0 : value);
+}
+
+// Long double has the property that it might have extra unused bytes in it.
+// For example, in x86 sizeof(long double)==16 but it only really uses 80-bits
+// of it. This means we can't use hash_bytes on a long double and have to
+// convert it to something else first.
+template <typename H, typename LongDouble>
+typename std::enable_if<std::is_same<LongDouble, long double>::value, H>::type
+AbslHashValue(H hash_state, LongDouble value) {
+  const int category = std::fpclassify(value);
+  switch (category) {
+    case FP_INFINITE:
+      // Add the sign bit to differentiate between +Inf and -Inf
+      hash_state = H::combine(std::move(hash_state), std::signbit(value));
+      break;
+
+    case FP_NAN:
+    case FP_ZERO:
+    default:
+      // Category is enough for these.
+      break;
+
+    case FP_NORMAL:
+    case FP_SUBNORMAL:
+      // We can't convert `value` directly to double because this would have
+      // undefined behavior if the value is out of range.
+      // std::frexp gives us a value in the range (-1, -.5] or [.5, 1) that is
+      // guaranteed to be in range for `double`. The truncation is
+      // implementation defined, but that works as long as it is deterministic.
+      int exp;
+      auto mantissa = static_cast<double>(std::frexp(value, &exp));
+      hash_state = H::combine(std::move(hash_state), mantissa, exp);
+  }
+
+  return H::combine(std::move(hash_state), category);
+}
+
+// AbslHashValue() for hashing pointers
+template <typename H, typename T>
+H AbslHashValue(H hash_state, T* ptr) {
+  auto v = reinterpret_cast<uintptr_t>(ptr);
+  // Due to alignment, pointers tend to have low bits as zero, and the next few
+  // bits follow a pattern since they are also multiples of some base value.
+  // Mixing the pointer twice helps prevent stuck low bits for certain alignment
+  // values.
+  return H::combine(std::move(hash_state), v, v);
+}
+
+// AbslHashValue() for hashing nullptr_t
+template <typename H>
+H AbslHashValue(H hash_state, std::nullptr_t) {
+  return H::combine(std::move(hash_state), static_cast<void*>(nullptr));
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Composite Types
+// -----------------------------------------------------------------------------
+
+// is_hashable()
+//
+// Trait class which returns true if T is hashable by the absl::Hash framework.
+// Used for the AbslHashValue implementations for composite types below.
+template <typename T>
+struct is_hashable;
+
+// AbslHashValue() for hashing pairs
+template <typename H, typename T1, typename T2>
+typename std::enable_if<is_hashable<T1>::value && is_hashable<T2>::value,
+                        H>::type
+AbslHashValue(H hash_state, const std::pair<T1, T2>& p) {
+  return H::combine(std::move(hash_state), p.first, p.second);
+}
+
+// hash_tuple()
+//
+// Helper function for hashing a tuple. The third argument should
+// be an index_sequence running from 0 to tuple_size<Tuple> - 1.
+template <typename H, typename Tuple, size_t... Is>
+H hash_tuple(H hash_state, const Tuple& t, absl::index_sequence<Is...>) {
+  return H::combine(std::move(hash_state), std::get<Is>(t)...);
+}
+
+// AbslHashValue for hashing tuples
+template <typename H, typename... Ts>
+#if defined(_MSC_VER)
+// This SFINAE gets MSVC confused under some conditions. Let's just disable it
+// for now.
+H
+#else  // _MSC_VER
+typename std::enable_if<absl::conjunction<is_hashable<Ts>...>::value, H>::type
+#endif  // _MSC_VER
+AbslHashValue(H hash_state, const std::tuple<Ts...>& t) {
+  return hash_internal::hash_tuple(std::move(hash_state), t,
+                                   absl::make_index_sequence<sizeof...(Ts)>());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Pointers
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing unique_ptr
+template <typename H, typename T, typename D>
+H AbslHashValue(H hash_state, const std::unique_ptr<T, D>& ptr) {
+  return H::combine(std::move(hash_state), ptr.get());
+}
+
+// AbslHashValue for hashing shared_ptr
+template <typename H, typename T>
+H AbslHashValue(H hash_state, const std::shared_ptr<T>& ptr) {
+  return H::combine(std::move(hash_state), ptr.get());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for String-Like Types
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing strings
+//
+// All the string-like types supported here provide the same hash expansion for
+// the same character sequence. These types are:
+//
+//  - `std::string` (and std::basic_string<char, std::char_traits<char>, A> for
+//      any allocator A)
+//  - `absl::string_view` and `std::string_view`
+//
+// For simplicity, we currently support only `char` strings. This support may
+// be broadened, if necessary, but with some caution - this overload would
+// misbehave in cases where the traits' `eq()` member isn't equivalent to `==`
+// on the underlying character type.
+template <typename H>
+H AbslHashValue(H hash_state, absl::string_view str) {
+  return H::combine(
+      H::combine_contiguous(std::move(hash_state), str.data(), str.size()),
+      str.size());
+}
+
+// Support std::wstring, std::u16string and std::u32string.
+template <typename Char, typename Alloc, typename H,
+          typename = absl::enable_if_t<std::is_same<Char, wchar_t>::value ||
+                                       std::is_same<Char, char16_t>::value ||
+                                       std::is_same<Char, char32_t>::value>>
+H AbslHashValue(
+    H hash_state,
+    const std::basic_string<Char, std::char_traits<Char>, Alloc>& str) {
+  return H::combine(
+      H::combine_contiguous(std::move(hash_state), str.data(), str.size()),
+      str.size());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Sequence Containers
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing std::array
+template <typename H, typename T, size_t N>
+typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue(
+    H hash_state, const std::array<T, N>& array) {
+  return H::combine_contiguous(std::move(hash_state), array.data(),
+                               array.size());
+}
+
+// AbslHashValue for hashing std::deque
+template <typename H, typename T, typename Allocator>
+typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue(
+    H hash_state, const std::deque<T, Allocator>& deque) {
+  // TODO(gromer): investigate a more efficient implementation taking
+  // advantage of the chunk structure.
+  for (const auto& t : deque) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), deque.size());
+}
+
+// AbslHashValue for hashing std::forward_list
+template <typename H, typename T, typename Allocator>
+typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue(
+    H hash_state, const std::forward_list<T, Allocator>& list) {
+  size_t size = 0;
+  for (const T& t : list) {
+    hash_state = H::combine(std::move(hash_state), t);
+    ++size;
+  }
+  return H::combine(std::move(hash_state), size);
+}
+
+// AbslHashValue for hashing std::list
+template <typename H, typename T, typename Allocator>
+typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue(
+    H hash_state, const std::list<T, Allocator>& list) {
+  for (const auto& t : list) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), list.size());
+}
+
+// AbslHashValue for hashing std::vector
+//
+// Do not use this for vector<bool>. It does not have a .data(), and a fallback
+// for std::hash<> is most likely faster.
+template <typename H, typename T, typename Allocator>
+typename std::enable_if<is_hashable<T>::value && !std::is_same<T, bool>::value,
+                        H>::type
+AbslHashValue(H hash_state, const std::vector<T, Allocator>& vector) {
+  return H::combine(H::combine_contiguous(std::move(hash_state), vector.data(),
+                                          vector.size()),
+                    vector.size());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Ordered Associative Containers
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing std::map
+template <typename H, typename Key, typename T, typename Compare,
+          typename Allocator>
+typename std::enable_if<is_hashable<Key>::value && is_hashable<T>::value,
+                        H>::type
+AbslHashValue(H hash_state, const std::map<Key, T, Compare, Allocator>& map) {
+  for (const auto& t : map) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), map.size());
+}
+
+// AbslHashValue for hashing std::multimap
+template <typename H, typename Key, typename T, typename Compare,
+          typename Allocator>
+typename std::enable_if<is_hashable<Key>::value && is_hashable<T>::value,
+                        H>::type
+AbslHashValue(H hash_state,
+              const std::multimap<Key, T, Compare, Allocator>& map) {
+  for (const auto& t : map) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), map.size());
+}
+
+// AbslHashValue for hashing std::set
+template <typename H, typename Key, typename Compare, typename Allocator>
+typename std::enable_if<is_hashable<Key>::value, H>::type AbslHashValue(
+    H hash_state, const std::set<Key, Compare, Allocator>& set) {
+  for (const auto& t : set) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), set.size());
+}
+
+// AbslHashValue for hashing std::multiset
+template <typename H, typename Key, typename Compare, typename Allocator>
+typename std::enable_if<is_hashable<Key>::value, H>::type AbslHashValue(
+    H hash_state, const std::multiset<Key, Compare, Allocator>& set) {
+  for (const auto& t : set) {
+    hash_state = H::combine(std::move(hash_state), t);
+  }
+  return H::combine(std::move(hash_state), set.size());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Wrapper Types
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing absl::optional
+template <typename H, typename T>
+typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue(
+    H hash_state, const absl::optional<T>& opt) {
+  if (opt) hash_state = H::combine(std::move(hash_state), *opt);
+  return H::combine(std::move(hash_state), opt.has_value());
+}
+
+// VariantVisitor
+template <typename H>
+struct VariantVisitor {
+  H&& hash_state;
+  template <typename T>
+  H operator()(const T& t) const {
+    return H::combine(std::move(hash_state), t);
+  }
+};
+
+// AbslHashValue for hashing absl::variant
+template <typename H, typename... T>
+typename std::enable_if<conjunction<is_hashable<T>...>::value, H>::type
+AbslHashValue(H hash_state, const absl::variant<T...>& v) {
+  if (!v.valueless_by_exception()) {
+    hash_state = absl::visit(VariantVisitor<H>{std::move(hash_state)}, v);
+  }
+  return H::combine(std::move(hash_state), v.index());
+}
+
+// -----------------------------------------------------------------------------
+// AbslHashValue for Other Types
+// -----------------------------------------------------------------------------
+
+// AbslHashValue for hashing std::bitset is not defined, for the same reason as
+// for vector<bool> (see std::vector above): It does not expose the raw bytes,
+// and a fallback to std::hash<> is most likely faster.
+
+// -----------------------------------------------------------------------------
+
+// hash_range_or_bytes()
+//
+// Mixes all values in the range [data, data+size) into the hash state.
+// This overload accepts only uniquely-represented types, and hashes them by
+// hashing the entire range of bytes.
+template <typename H, typename T>
+typename std::enable_if<is_uniquely_represented<T>::value, H>::type
+hash_range_or_bytes(H hash_state, const T* data, size_t size) {
+  const auto* bytes = reinterpret_cast<const unsigned char*>(data);
+  return H::combine_contiguous(std::move(hash_state), bytes, sizeof(T) * size);
+}
+
+// hash_range_or_bytes()
+template <typename H, typename T>
+typename std::enable_if<!is_uniquely_represented<T>::value, H>::type
+hash_range_or_bytes(H hash_state, const T* data, size_t size) {
+  for (const auto end = data + size; data < end; ++data) {
+    hash_state = H::combine(std::move(hash_state), *data);
+  }
+  return hash_state;
+}
+
+#if defined(ABSL_INTERNAL_LEGACY_HASH_NAMESPACE) && \
+    ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_
+#define ABSL_HASH_INTERNAL_SUPPORT_LEGACY_HASH_ 1
+#else
+#define ABSL_HASH_INTERNAL_SUPPORT_LEGACY_HASH_ 0
+#endif
+
+// HashSelect
+//
+// Type trait to select the appropriate hash implementation to use.
+// HashSelect::type<T> will give the proper hash implementation, to be invoked
+// as:
+//   HashSelect::type<T>::Invoke(state, value)
+// Also, HashSelect::type<T>::value is a boolean equal to `true` if there is a
+// valid `Invoke` function. Types that are not hashable will have a ::value of
+// `false`.
+struct HashSelect {
+ private:
+  struct State : HashStateBase<State> {
+    static State combine_contiguous(State hash_state, const unsigned char*,
+                                    size_t);
+    using State::HashStateBase::combine_contiguous;
+  };
+
+  struct UniquelyRepresentedProbe {
+    template <typename H, typename T>
+    static auto Invoke(H state, const T& value)
+        -> absl::enable_if_t<is_uniquely_represented<T>::value, H> {
+      return hash_internal::hash_bytes(std::move(state), value);
+    }
+  };
+
+  struct HashValueProbe {
+    template <typename H, typename T>
+    static auto Invoke(H state, const T& value) -> absl::enable_if_t<
+        std::is_same<H,
+                     decltype(AbslHashValue(std::move(state), value))>::value,
+        H> {
+      return AbslHashValue(std::move(state), value);
+    }
+  };
+
+  struct LegacyHashProbe {
+#if ABSL_HASH_INTERNAL_SUPPORT_LEGACY_HASH_
+    template <typename H, typename T>
+    static auto Invoke(H state, const T& value) -> absl::enable_if_t<
+        std::is_convertible<
+            decltype(ABSL_INTERNAL_LEGACY_HASH_NAMESPACE::hash<T>()(value)),
+            size_t>::value,
+        H> {
+      return hash_internal::hash_bytes(
+          std::move(state),
+          ABSL_INTERNAL_LEGACY_HASH_NAMESPACE::hash<T>{}(value));
+    }
+#endif  // ABSL_HASH_INTERNAL_SUPPORT_LEGACY_HASH_
+  };
+
+  struct StdHashProbe {
+    template <typename H, typename T>
+    static auto Invoke(H state, const T& value)
+        -> absl::enable_if_t<type_traits_internal::IsHashable<T>::value, H> {
+      return hash_internal::hash_bytes(std::move(state), std::hash<T>{}(value));
+    }
+  };
+
+  template <typename Hash, typename T>
+  struct Probe : Hash {
+   private:
+    template <typename H, typename = decltype(H::Invoke(
+                              std::declval<State>(), std::declval<const T&>()))>
+    static std::true_type Test(int);
+    template <typename U>
+    static std::false_type Test(char);
+
+   public:
+    static constexpr bool value = decltype(Test<Hash>(0))::value;
+  };
+
+ public:
+  // Probe each implementation in order.
+  // disjunction provides short circuiting wrt instantiation.
+  template <typename T>
+  using Apply = absl::disjunction<         //
+      Probe<UniquelyRepresentedProbe, T>,  //
+      Probe<HashValueProbe, T>,            //
+      Probe<LegacyHashProbe, T>,           //
+      Probe<StdHashProbe, T>,              //
+      std::false_type>;
+};
+
+template <typename T>
+struct is_hashable
+    : std::integral_constant<bool, HashSelect::template Apply<T>::value> {};
+
+// CityHashState
+class ABSL_DLL CityHashState
+    : public HashStateBase<CityHashState> {
+  // absl::uint128 is not an alias or a thin wrapper around the intrinsic.
+  // We use the intrinsic when available to improve performance.
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  using uint128 = __uint128_t;
+#else   // ABSL_HAVE_INTRINSIC_INT128
+  using uint128 = absl::uint128;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+  static constexpr uint64_t kMul =
+      sizeof(size_t) == 4 ? uint64_t{0xcc9e2d51}
+                          : uint64_t{0x9ddfea08eb382d69};
+
+  template <typename T>
+  using IntegralFastPath =
+      conjunction<std::is_integral<T>, is_uniquely_represented<T>>;
+
+ public:
+  // Move only
+  CityHashState(CityHashState&&) = default;
+  CityHashState& operator=(CityHashState&&) = default;
+
+  // CityHashState::combine_contiguous()
+  //
+  // Fundamental base case for hash recursion: mixes the given range of bytes
+  // into the hash state.
+  static CityHashState combine_contiguous(CityHashState hash_state,
+                                          const unsigned char* first,
+                                          size_t size) {
+    return CityHashState(
+        CombineContiguousImpl(hash_state.state_, first, size,
+                              std::integral_constant<int, sizeof(size_t)>{}));
+  }
+  using CityHashState::HashStateBase::combine_contiguous;
+
+  // CityHashState::hash()
+  //
+  // For performance reasons in non-opt mode, we specialize this for
+  // integral types.
+  // Otherwise we would be instantiating and calling dozens of functions for
+  // something that is just one multiplication and a couple xor's.
+  // The result should be the same as running the whole algorithm, but faster.
+  template <typename T, absl::enable_if_t<IntegralFastPath<T>::value, int> = 0>
+  static size_t hash(T value) {
+    return static_cast<size_t>(Mix(Seed(), static_cast<uint64_t>(value)));
+  }
+
+  // Overload of CityHashState::hash()
+  template <typename T, absl::enable_if_t<!IntegralFastPath<T>::value, int> = 0>
+  static size_t hash(const T& value) {
+    return static_cast<size_t>(combine(CityHashState{}, value).state_);
+  }
+
+ private:
+  // Invoked only once for a given argument; that plus the fact that this is
+  // move-only ensures that there is only one non-moved-from object.
+  CityHashState() : state_(Seed()) {}
+
+  // Workaround for MSVC bug.
+  // We make the type copyable to fix the calling convention, even though we
+  // never actually copy it. Keep it private to not affect the public API of the
+  // type.
+  CityHashState(const CityHashState&) = default;
+
+  explicit CityHashState(uint64_t state) : state_(state) {}
+
+  // Implementation of the base case for combine_contiguous where we actually
+  // mix the bytes into the state.
+  // Dispatch to different implementations of the combine_contiguous depending
+  // on the value of `sizeof(size_t)`.
+  static uint64_t CombineContiguousImpl(uint64_t state,
+                                        const unsigned char* first, size_t len,
+                                        std::integral_constant<int, 4>
+                                        /* sizeof_size_t */);
+  static uint64_t CombineContiguousImpl(uint64_t state,
+                                        const unsigned char* first, size_t len,
+                                        std::integral_constant<int, 8>
+                                        /* sizeof_size_t*/);
+
+  // Slow dispatch path for calls to CombineContiguousImpl with a size argument
+  // larger than PiecewiseChunkSize().  Has the same effect as calling
+  // CombineContiguousImpl() repeatedly with the chunk stride size.
+  static uint64_t CombineLargeContiguousImpl32(uint64_t state,
+                                               const unsigned char* first,
+                                               size_t len);
+  static uint64_t CombineLargeContiguousImpl64(uint64_t state,
+                                               const unsigned char* first,
+                                               size_t len);
+
+  // Reads 9 to 16 bytes from p.
+  // The first 8 bytes are in .first, the rest (zero padded) bytes are in
+  // .second.
+  static std::pair<uint64_t, uint64_t> Read9To16(const unsigned char* p,
+                                                 size_t len) {
+    uint64_t high = little_endian::Load64(p + len - 8);
+    return {little_endian::Load64(p), high >> (128 - len * 8)};
+  }
+
+  // Reads 4 to 8 bytes from p. Zero pads to fill uint64_t.
+  static uint64_t Read4To8(const unsigned char* p, size_t len) {
+    return (static_cast<uint64_t>(little_endian::Load32(p + len - 4))
+            << (len - 4) * 8) |
+           little_endian::Load32(p);
+  }
+
+  // Reads 1 to 3 bytes from p. Zero pads to fill uint32_t.
+  static uint32_t Read1To3(const unsigned char* p, size_t len) {
+    return static_cast<uint32_t>((p[0]) |                         //
+                                 (p[len / 2] << (len / 2 * 8)) |  //
+                                 (p[len - 1] << ((len - 1) * 8)));
+  }
+
+  ABSL_ATTRIBUTE_ALWAYS_INLINE static uint64_t Mix(uint64_t state, uint64_t v) {
+    using MultType =
+        absl::conditional_t<sizeof(size_t) == 4, uint64_t, uint128>;
+    // We do the addition in 64-bit space to make sure the 128-bit
+    // multiplication is fast. If we were to do it as MultType the compiler has
+    // to assume that the high word is non-zero and needs to perform 2
+    // multiplications instead of one.
+    MultType m = state + v;
+    m *= kMul;
+    return static_cast<uint64_t>(m ^ (m >> (sizeof(m) * 8 / 2)));
+  }
+
+  // Seed()
+  //
+  // A non-deterministic seed.
+  //
+  // The current purpose of this seed is to generate non-deterministic results
+  // and prevent having users depend on the particular hash values.
+  // It is not meant as a security feature right now, but it leaves the door
+  // open to upgrade it to a true per-process random seed. A true random seed
+  // costs more and we don't need to pay for that right now.
+  //
+  // On platforms with ASLR, we take advantage of it to make a per-process
+  // random value.
+  // See https://en.wikipedia.org/wiki/Address_space_layout_randomization
+  //
+  // On other platforms this is still going to be non-deterministic but most
+  // probably per-build and not per-process.
+  ABSL_ATTRIBUTE_ALWAYS_INLINE static uint64_t Seed() {
+    return static_cast<uint64_t>(reinterpret_cast<uintptr_t>(kSeed));
+  }
+  static const void* const kSeed;
+
+  uint64_t state_;
+};
+
+// CityHashState::CombineContiguousImpl()
+inline uint64_t CityHashState::CombineContiguousImpl(
+    uint64_t state, const unsigned char* first, size_t len,
+    std::integral_constant<int, 4> /* sizeof_size_t */) {
+  // For large values we use CityHash, for small ones we just use a
+  // multiplicative hash.
+  uint64_t v;
+  if (len > 8) {
+    if (ABSL_PREDICT_FALSE(len > PiecewiseChunkSize())) {
+      return CombineLargeContiguousImpl32(state, first, len);
+    }
+    v = absl::hash_internal::CityHash32(reinterpret_cast<const char*>(first), len);
+  } else if (len >= 4) {
+    v = Read4To8(first, len);
+  } else if (len > 0) {
+    v = Read1To3(first, len);
+  } else {
+    // Empty ranges have no effect.
+    return state;
+  }
+  return Mix(state, v);
+}
+
+// Overload of CityHashState::CombineContiguousImpl()
+inline uint64_t CityHashState::CombineContiguousImpl(
+    uint64_t state, const unsigned char* first, size_t len,
+    std::integral_constant<int, 8> /* sizeof_size_t */) {
+  // For large values we use CityHash, for small ones we just use a
+  // multiplicative hash.
+  uint64_t v;
+  if (len > 16) {
+    if (ABSL_PREDICT_FALSE(len > PiecewiseChunkSize())) {
+      return CombineLargeContiguousImpl64(state, first, len);
+    }
+    v = absl::hash_internal::CityHash64(reinterpret_cast<const char*>(first), len);
+  } else if (len > 8) {
+    auto p = Read9To16(first, len);
+    state = Mix(state, p.first);
+    v = p.second;
+  } else if (len >= 4) {
+    v = Read4To8(first, len);
+  } else if (len > 0) {
+    v = Read1To3(first, len);
+  } else {
+    // Empty ranges have no effect.
+    return state;
+  }
+  return Mix(state, v);
+}
+
+struct AggregateBarrier {};
+
+// HashImpl
+
+// Add a private base class to make sure this type is not an aggregate.
+// Aggregates can be aggregate initialized even if the default constructor is
+// deleted.
+struct PoisonedHash : private AggregateBarrier {
+  PoisonedHash() = delete;
+  PoisonedHash(const PoisonedHash&) = delete;
+  PoisonedHash& operator=(const PoisonedHash&) = delete;
+};
+
+template <typename T>
+struct HashImpl {
+  size_t operator()(const T& value) const { return CityHashState::hash(value); }
+};
+
+template <typename T>
+struct Hash
+    : absl::conditional_t<is_hashable<T>::value, HashImpl<T>, PoisonedHash> {};
+
+template <typename H>
+template <typename T, typename... Ts>
+H HashStateBase<H>::combine(H state, const T& value, const Ts&... values) {
+  return H::combine(hash_internal::HashSelect::template Apply<T>::Invoke(
+                        std::move(state), value),
+                    values...);
+}
+
+// HashStateBase::combine_contiguous()
+template <typename H>
+template <typename T>
+H HashStateBase<H>::combine_contiguous(H state, const T* data, size_t size) {
+  return hash_internal::hash_range_or_bytes(std::move(state), data, size);
+}
+
+// HashStateBase::PiecewiseCombiner::add_buffer()
+template <typename H>
+H PiecewiseCombiner::add_buffer(H state, const unsigned char* data,
+                                size_t size) {
+  if (position_ + size < PiecewiseChunkSize()) {
+    // This partial chunk does not fill our existing buffer
+    memcpy(buf_ + position_, data, size);
+    position_ += size;
+    return state;
+  }
+
+  // Complete the buffer and hash it
+  const size_t bytes_needed = PiecewiseChunkSize() - position_;
+  memcpy(buf_ + position_, data, bytes_needed);
+  state = H::combine_contiguous(std::move(state), buf_, PiecewiseChunkSize());
+  data += bytes_needed;
+  size -= bytes_needed;
+
+  // Hash whatever chunks we can without copying
+  while (size >= PiecewiseChunkSize()) {
+    state = H::combine_contiguous(std::move(state), data, PiecewiseChunkSize());
+    data += PiecewiseChunkSize();
+    size -= PiecewiseChunkSize();
+  }
+  // Fill the buffer with the remainder
+  memcpy(buf_, data, size);
+  position_ = size;
+  return state;
+}
+
+// HashStateBase::PiecewiseCombiner::finalize()
+template <typename H>
+H PiecewiseCombiner::finalize(H state) {
+  // Hash the remainder left in the buffer, which may be empty
+  return H::combine_contiguous(std::move(state), buf_, position_);
+}
+
+}  // namespace hash_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HASH_INTERNAL_HASH_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/memory/memory.h b/ChattingApp 000/Pods/abseil/absl/memory/memory.h
new file mode 100644
index 0000000..513f710
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/memory/memory.h	
@@ -0,0 +1,695 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: memory.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains utility functions for managing the creation and
+// conversion of smart pointers. This file is an extension to the C++
+// standard <memory> library header file.
+
+#ifndef ABSL_MEMORY_MEMORY_H_
+#define ABSL_MEMORY_MEMORY_H_
+
+#include <cstddef>
+#include <limits>
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// Function Template: WrapUnique()
+// -----------------------------------------------------------------------------
+//
+// Adopts ownership from a raw pointer and transfers it to the returned
+// `std::unique_ptr`, whose type is deduced. Because of this deduction, *do not*
+// specify the template type `T` when calling `WrapUnique`.
+//
+// Example:
+//   X* NewX(int, int);
+//   auto x = WrapUnique(NewX(1, 2));  // 'x' is std::unique_ptr<X>.
+//
+// Do not call WrapUnique with an explicit type, as in
+// `WrapUnique<X>(NewX(1, 2))`.  The purpose of WrapUnique is to automatically
+// deduce the pointer type. If you wish to make the type explicit, just use
+// `std::unique_ptr` directly.
+//
+//   auto x = std::unique_ptr<X>(NewX(1, 2));
+//                  - or -
+//   std::unique_ptr<X> x(NewX(1, 2));
+//
+// While `absl::WrapUnique` is useful for capturing the output of a raw
+// pointer factory, prefer 'absl::make_unique<T>(args...)' over
+// 'absl::WrapUnique(new T(args...))'.
+//
+//   auto x = WrapUnique(new X(1, 2));  // works, but nonideal.
+//   auto x = make_unique<X>(1, 2);     // safer, standard, avoids raw 'new'.
+//
+// Note that `absl::WrapUnique(p)` is valid only if `delete p` is a valid
+// expression. In particular, `absl::WrapUnique()` cannot wrap pointers to
+// arrays, functions or void, and it must not be used to capture pointers
+// obtained from array-new expressions (even though that would compile!).
+template <typename T>
+std::unique_ptr<T> WrapUnique(T* ptr) {
+  static_assert(!std::is_array<T>::value, "array types are unsupported");
+  static_assert(std::is_object<T>::value, "non-object types are unsupported");
+  return std::unique_ptr<T>(ptr);
+}
+
+namespace memory_internal {
+
+// Traits to select proper overload and return type for `absl::make_unique<>`.
+template <typename T>
+struct MakeUniqueResult {
+  using scalar = std::unique_ptr<T>;
+};
+template <typename T>
+struct MakeUniqueResult<T[]> {
+  using array = std::unique_ptr<T[]>;
+};
+template <typename T, size_t N>
+struct MakeUniqueResult<T[N]> {
+  using invalid = void;
+};
+
+}  // namespace memory_internal
+
+// gcc 4.8 has __cplusplus at 201301 but the libstdc++ shipped with it doesn't
+// define make_unique.  Other supported compilers either just define __cplusplus
+// as 201103 but have make_unique (msvc), or have make_unique whenever
+// __cplusplus > 201103 (clang).
+#if (__cplusplus > 201103L || defined(_MSC_VER)) && \
+    !(defined(__GLIBCXX__) && !defined(__cpp_lib_make_unique))
+using std::make_unique;
+#else
+// -----------------------------------------------------------------------------
+// Function Template: make_unique<T>()
+// -----------------------------------------------------------------------------
+//
+// Creates a `std::unique_ptr<>`, while avoiding issues creating temporaries
+// during the construction process. `absl::make_unique<>` also avoids redundant
+// type declarations, by avoiding the need to explicitly use the `new` operator.
+//
+// This implementation of `absl::make_unique<>` is designed for C++11 code and
+// will be replaced in C++14 by the equivalent `std::make_unique<>` abstraction.
+// `absl::make_unique<>` is designed to be 100% compatible with
+// `std::make_unique<>` so that the eventual migration will involve a simple
+// rename operation.
+//
+// For more background on why `std::unique_ptr<T>(new T(a,b))` is problematic,
+// see Herb Sutter's explanation on
+// (Exception-Safe Function Calls)[https://herbsutter.com/gotw/_102/].
+// (In general, reviewers should treat `new T(a,b)` with scrutiny.)
+//
+// Example usage:
+//
+//    auto p = make_unique<X>(args...);  // 'p'  is a std::unique_ptr<X>
+//    auto pa = make_unique<X[]>(5);     // 'pa' is a std::unique_ptr<X[]>
+//
+// Three overloads of `absl::make_unique` are required:
+//
+//   - For non-array T:
+//
+//       Allocates a T with `new T(std::forward<Args> args...)`,
+//       forwarding all `args` to T's constructor.
+//       Returns a `std::unique_ptr<T>` owning that object.
+//
+//   - For an array of unknown bounds T[]:
+//
+//       `absl::make_unique<>` will allocate an array T of type U[] with
+//       `new U[n]()` and return a `std::unique_ptr<U[]>` owning that array.
+//
+//       Note that 'U[n]()' is different from 'U[n]', and elements will be
+//       value-initialized. Note as well that `std::unique_ptr` will perform its
+//       own destruction of the array elements upon leaving scope, even though
+//       the array [] does not have a default destructor.
+//
+//       NOTE: an array of unknown bounds T[] may still be (and often will be)
+//       initialized to have a size, and will still use this overload. E.g:
+//
+//         auto my_array = absl::make_unique<int[]>(10);
+//
+//   - For an array of known bounds T[N]:
+//
+//       `absl::make_unique<>` is deleted (like with `std::make_unique<>`) as
+//       this overload is not useful.
+//
+//       NOTE: an array of known bounds T[N] is not considered a useful
+//       construction, and may cause undefined behavior in templates. E.g:
+//
+//         auto my_array = absl::make_unique<int[10]>();
+//
+//       In those cases, of course, you can still use the overload above and
+//       simply initialize it to its desired size:
+//
+//         auto my_array = absl::make_unique<int[]>(10);
+
+// `absl::make_unique` overload for non-array types.
+template <typename T, typename... Args>
+typename memory_internal::MakeUniqueResult<T>::scalar make_unique(
+    Args&&... args) {
+  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+}
+
+// `absl::make_unique` overload for an array T[] of unknown bounds.
+// The array allocation needs to use the `new T[size]` form and cannot take
+// element constructor arguments. The `std::unique_ptr` will manage destructing
+// these array elements.
+template <typename T>
+typename memory_internal::MakeUniqueResult<T>::array make_unique(size_t n) {
+  return std::unique_ptr<T>(new typename absl::remove_extent_t<T>[n]());
+}
+
+// `absl::make_unique` overload for an array T[N] of known bounds.
+// This construction will be rejected.
+template <typename T, typename... Args>
+typename memory_internal::MakeUniqueResult<T>::invalid make_unique(
+    Args&&... /* args */) = delete;
+#endif
+
+// -----------------------------------------------------------------------------
+// Function Template: RawPtr()
+// -----------------------------------------------------------------------------
+//
+// Extracts the raw pointer from a pointer-like value `ptr`. `absl::RawPtr` is
+// useful within templates that need to handle a complement of raw pointers,
+// `std::nullptr_t`, and smart pointers.
+template <typename T>
+auto RawPtr(T&& ptr) -> decltype(std::addressof(*ptr)) {
+  // ptr is a forwarding reference to support Ts with non-const operators.
+  return (ptr != nullptr) ? std::addressof(*ptr) : nullptr;
+}
+inline std::nullptr_t RawPtr(std::nullptr_t) { return nullptr; }
+
+// -----------------------------------------------------------------------------
+// Function Template: ShareUniquePtr()
+// -----------------------------------------------------------------------------
+//
+// Adopts a `std::unique_ptr` rvalue and returns a `std::shared_ptr` of deduced
+// type. Ownership (if any) of the held value is transferred to the returned
+// shared pointer.
+//
+// Example:
+//
+//     auto up = absl::make_unique<int>(10);
+//     auto sp = absl::ShareUniquePtr(std::move(up));  // shared_ptr<int>
+//     CHECK_EQ(*sp, 10);
+//     CHECK(up == nullptr);
+//
+// Note that this conversion is correct even when T is an array type, and more
+// generally it works for *any* deleter of the `unique_ptr` (single-object
+// deleter, array deleter, or any custom deleter), since the deleter is adopted
+// by the shared pointer as well. The deleter is copied (unless it is a
+// reference).
+//
+// Implements the resolution of [LWG 2415](http://wg21.link/lwg2415), by which a
+// null shared pointer does not attempt to call the deleter.
+template <typename T, typename D>
+std::shared_ptr<T> ShareUniquePtr(std::unique_ptr<T, D>&& ptr) {
+  return ptr ? std::shared_ptr<T>(std::move(ptr)) : std::shared_ptr<T>();
+}
+
+// -----------------------------------------------------------------------------
+// Function Template: WeakenPtr()
+// -----------------------------------------------------------------------------
+//
+// Creates a weak pointer associated with a given shared pointer. The returned
+// value is a `std::weak_ptr` of deduced type.
+//
+// Example:
+//
+//    auto sp = std::make_shared<int>(10);
+//    auto wp = absl::WeakenPtr(sp);
+//    CHECK_EQ(sp.get(), wp.lock().get());
+//    sp.reset();
+//    CHECK(wp.lock() == nullptr);
+//
+template <typename T>
+std::weak_ptr<T> WeakenPtr(const std::shared_ptr<T>& ptr) {
+  return std::weak_ptr<T>(ptr);
+}
+
+namespace memory_internal {
+
+// ExtractOr<E, O, D>::type evaluates to E<O> if possible. Otherwise, D.
+template <template <typename> class Extract, typename Obj, typename Default,
+          typename>
+struct ExtractOr {
+  using type = Default;
+};
+
+template <template <typename> class Extract, typename Obj, typename Default>
+struct ExtractOr<Extract, Obj, Default, void_t<Extract<Obj>>> {
+  using type = Extract<Obj>;
+};
+
+template <template <typename> class Extract, typename Obj, typename Default>
+using ExtractOrT = typename ExtractOr<Extract, Obj, Default, void>::type;
+
+// Extractors for the features of allocators.
+template <typename T>
+using GetPointer = typename T::pointer;
+
+template <typename T>
+using GetConstPointer = typename T::const_pointer;
+
+template <typename T>
+using GetVoidPointer = typename T::void_pointer;
+
+template <typename T>
+using GetConstVoidPointer = typename T::const_void_pointer;
+
+template <typename T>
+using GetDifferenceType = typename T::difference_type;
+
+template <typename T>
+using GetSizeType = typename T::size_type;
+
+template <typename T>
+using GetPropagateOnContainerCopyAssignment =
+    typename T::propagate_on_container_copy_assignment;
+
+template <typename T>
+using GetPropagateOnContainerMoveAssignment =
+    typename T::propagate_on_container_move_assignment;
+
+template <typename T>
+using GetPropagateOnContainerSwap = typename T::propagate_on_container_swap;
+
+template <typename T>
+using GetIsAlwaysEqual = typename T::is_always_equal;
+
+template <typename T>
+struct GetFirstArg;
+
+template <template <typename...> class Class, typename T, typename... Args>
+struct GetFirstArg<Class<T, Args...>> {
+  using type = T;
+};
+
+template <typename Ptr, typename = void>
+struct ElementType {
+  using type = typename GetFirstArg<Ptr>::type;
+};
+
+template <typename T>
+struct ElementType<T, void_t<typename T::element_type>> {
+  using type = typename T::element_type;
+};
+
+template <typename T, typename U>
+struct RebindFirstArg;
+
+template <template <typename...> class Class, typename T, typename... Args,
+          typename U>
+struct RebindFirstArg<Class<T, Args...>, U> {
+  using type = Class<U, Args...>;
+};
+
+template <typename T, typename U, typename = void>
+struct RebindPtr {
+  using type = typename RebindFirstArg<T, U>::type;
+};
+
+template <typename T, typename U>
+struct RebindPtr<T, U, void_t<typename T::template rebind<U>>> {
+  using type = typename T::template rebind<U>;
+};
+
+template <typename T, typename U>
+constexpr bool HasRebindAlloc(...) {
+  return false;
+}
+
+template <typename T, typename U>
+constexpr bool HasRebindAlloc(typename T::template rebind<U>::other*) {
+  return true;
+}
+
+template <typename T, typename U, bool = HasRebindAlloc<T, U>(nullptr)>
+struct RebindAlloc {
+  using type = typename RebindFirstArg<T, U>::type;
+};
+
+template <typename T, typename U>
+struct RebindAlloc<T, U, true> {
+  using type = typename T::template rebind<U>::other;
+};
+
+}  // namespace memory_internal
+
+// -----------------------------------------------------------------------------
+// Class Template: pointer_traits
+// -----------------------------------------------------------------------------
+//
+// An implementation of C++11's std::pointer_traits.
+//
+// Provided for portability on toolchains that have a working C++11 compiler,
+// but the standard library is lacking in C++11 support. For example, some
+// version of the Android NDK.
+//
+
+template <typename Ptr>
+struct pointer_traits {
+  using pointer = Ptr;
+
+  // element_type:
+  // Ptr::element_type if present. Otherwise T if Ptr is a template
+  // instantiation Template<T, Args...>
+  using element_type = typename memory_internal::ElementType<Ptr>::type;
+
+  // difference_type:
+  // Ptr::difference_type if present, otherwise std::ptrdiff_t
+  using difference_type =
+      memory_internal::ExtractOrT<memory_internal::GetDifferenceType, Ptr,
+                                  std::ptrdiff_t>;
+
+  // rebind:
+  // Ptr::rebind<U> if exists, otherwise Template<U, Args...> if Ptr is a
+  // template instantiation Template<T, Args...>
+  template <typename U>
+  using rebind = typename memory_internal::RebindPtr<Ptr, U>::type;
+
+  // pointer_to:
+  // Calls Ptr::pointer_to(r)
+  static pointer pointer_to(element_type& r) {  // NOLINT(runtime/references)
+    return Ptr::pointer_to(r);
+  }
+};
+
+// Specialization for T*.
+template <typename T>
+struct pointer_traits<T*> {
+  using pointer = T*;
+  using element_type = T;
+  using difference_type = std::ptrdiff_t;
+
+  template <typename U>
+  using rebind = U*;
+
+  // pointer_to:
+  // Calls std::addressof(r)
+  static pointer pointer_to(
+      element_type& r) noexcept {  // NOLINT(runtime/references)
+    return std::addressof(r);
+  }
+};
+
+// -----------------------------------------------------------------------------
+// Class Template: allocator_traits
+// -----------------------------------------------------------------------------
+//
+// A C++11 compatible implementation of C++17's std::allocator_traits.
+//
+template <typename Alloc>
+struct allocator_traits {
+  using allocator_type = Alloc;
+
+  // value_type:
+  // Alloc::value_type
+  using value_type = typename Alloc::value_type;
+
+  // pointer:
+  // Alloc::pointer if present, otherwise value_type*
+  using pointer = memory_internal::ExtractOrT<memory_internal::GetPointer,
+                                              Alloc, value_type*>;
+
+  // const_pointer:
+  // Alloc::const_pointer if present, otherwise
+  // absl::pointer_traits<pointer>::rebind<const value_type>
+  using const_pointer =
+      memory_internal::ExtractOrT<memory_internal::GetConstPointer, Alloc,
+                                  typename absl::pointer_traits<pointer>::
+                                      template rebind<const value_type>>;
+
+  // void_pointer:
+  // Alloc::void_pointer if present, otherwise
+  // absl::pointer_traits<pointer>::rebind<void>
+  using void_pointer = memory_internal::ExtractOrT<
+      memory_internal::GetVoidPointer, Alloc,
+      typename absl::pointer_traits<pointer>::template rebind<void>>;
+
+  // const_void_pointer:
+  // Alloc::const_void_pointer if present, otherwise
+  // absl::pointer_traits<pointer>::rebind<const void>
+  using const_void_pointer = memory_internal::ExtractOrT<
+      memory_internal::GetConstVoidPointer, Alloc,
+      typename absl::pointer_traits<pointer>::template rebind<const void>>;
+
+  // difference_type:
+  // Alloc::difference_type if present, otherwise
+  // absl::pointer_traits<pointer>::difference_type
+  using difference_type = memory_internal::ExtractOrT<
+      memory_internal::GetDifferenceType, Alloc,
+      typename absl::pointer_traits<pointer>::difference_type>;
+
+  // size_type:
+  // Alloc::size_type if present, otherwise
+  // std::make_unsigned<difference_type>::type
+  using size_type = memory_internal::ExtractOrT<
+      memory_internal::GetSizeType, Alloc,
+      typename std::make_unsigned<difference_type>::type>;
+
+  // propagate_on_container_copy_assignment:
+  // Alloc::propagate_on_container_copy_assignment if present, otherwise
+  // std::false_type
+  using propagate_on_container_copy_assignment = memory_internal::ExtractOrT<
+      memory_internal::GetPropagateOnContainerCopyAssignment, Alloc,
+      std::false_type>;
+
+  // propagate_on_container_move_assignment:
+  // Alloc::propagate_on_container_move_assignment if present, otherwise
+  // std::false_type
+  using propagate_on_container_move_assignment = memory_internal::ExtractOrT<
+      memory_internal::GetPropagateOnContainerMoveAssignment, Alloc,
+      std::false_type>;
+
+  // propagate_on_container_swap:
+  // Alloc::propagate_on_container_swap if present, otherwise std::false_type
+  using propagate_on_container_swap =
+      memory_internal::ExtractOrT<memory_internal::GetPropagateOnContainerSwap,
+                                  Alloc, std::false_type>;
+
+  // is_always_equal:
+  // Alloc::is_always_equal if present, otherwise std::is_empty<Alloc>::type
+  using is_always_equal =
+      memory_internal::ExtractOrT<memory_internal::GetIsAlwaysEqual, Alloc,
+                                  typename std::is_empty<Alloc>::type>;
+
+  // rebind_alloc:
+  // Alloc::rebind<T>::other if present, otherwise Alloc<T, Args> if this Alloc
+  // is Alloc<U, Args>
+  template <typename T>
+  using rebind_alloc = typename memory_internal::RebindAlloc<Alloc, T>::type;
+
+  // rebind_traits:
+  // absl::allocator_traits<rebind_alloc<T>>
+  template <typename T>
+  using rebind_traits = absl::allocator_traits<rebind_alloc<T>>;
+
+  // allocate(Alloc& a, size_type n):
+  // Calls a.allocate(n)
+  static pointer allocate(Alloc& a,  // NOLINT(runtime/references)
+                          size_type n) {
+    return a.allocate(n);
+  }
+
+  // allocate(Alloc& a, size_type n, const_void_pointer hint):
+  // Calls a.allocate(n, hint) if possible.
+  // If not possible, calls a.allocate(n)
+  static pointer allocate(Alloc& a, size_type n,  // NOLINT(runtime/references)
+                          const_void_pointer hint) {
+    return allocate_impl(0, a, n, hint);
+  }
+
+  // deallocate(Alloc& a, pointer p, size_type n):
+  // Calls a.deallocate(p, n)
+  static void deallocate(Alloc& a, pointer p,  // NOLINT(runtime/references)
+                         size_type n) {
+    a.deallocate(p, n);
+  }
+
+  // construct(Alloc& a, T* p, Args&&... args):
+  // Calls a.construct(p, std::forward<Args>(args)...) if possible.
+  // If not possible, calls
+  //   ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...)
+  template <typename T, typename... Args>
+  static void construct(Alloc& a, T* p,  // NOLINT(runtime/references)
+                        Args&&... args) {
+    construct_impl(0, a, p, std::forward<Args>(args)...);
+  }
+
+  // destroy(Alloc& a, T* p):
+  // Calls a.destroy(p) if possible. If not possible, calls p->~T().
+  template <typename T>
+  static void destroy(Alloc& a, T* p) {  // NOLINT(runtime/references)
+    destroy_impl(0, a, p);
+  }
+
+  // max_size(const Alloc& a):
+  // Returns a.max_size() if possible. If not possible, returns
+  //   std::numeric_limits<size_type>::max() / sizeof(value_type)
+  static size_type max_size(const Alloc& a) { return max_size_impl(0, a); }
+
+  // select_on_container_copy_construction(const Alloc& a):
+  // Returns a.select_on_container_copy_construction() if possible.
+  // If not possible, returns a.
+  static Alloc select_on_container_copy_construction(const Alloc& a) {
+    return select_on_container_copy_construction_impl(0, a);
+  }
+
+ private:
+  template <typename A>
+  static auto allocate_impl(int, A& a,  // NOLINT(runtime/references)
+                            size_type n, const_void_pointer hint)
+      -> decltype(a.allocate(n, hint)) {
+    return a.allocate(n, hint);
+  }
+  static pointer allocate_impl(char, Alloc& a,  // NOLINT(runtime/references)
+                               size_type n, const_void_pointer) {
+    return a.allocate(n);
+  }
+
+  template <typename A, typename... Args>
+  static auto construct_impl(int, A& a,  // NOLINT(runtime/references)
+                             Args&&... args)
+      -> decltype(a.construct(std::forward<Args>(args)...)) {
+    a.construct(std::forward<Args>(args)...);
+  }
+
+  template <typename T, typename... Args>
+  static void construct_impl(char, Alloc&, T* p, Args&&... args) {
+    ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...);
+  }
+
+  template <typename A, typename T>
+  static auto destroy_impl(int, A& a,  // NOLINT(runtime/references)
+                           T* p) -> decltype(a.destroy(p)) {
+    a.destroy(p);
+  }
+  template <typename T>
+  static void destroy_impl(char, Alloc&, T* p) {
+    p->~T();
+  }
+
+  template <typename A>
+  static auto max_size_impl(int, const A& a) -> decltype(a.max_size()) {
+    return a.max_size();
+  }
+  static size_type max_size_impl(char, const Alloc&) {
+    return (std::numeric_limits<size_type>::max)() / sizeof(value_type);
+  }
+
+  template <typename A>
+  static auto select_on_container_copy_construction_impl(int, const A& a)
+      -> decltype(a.select_on_container_copy_construction()) {
+    return a.select_on_container_copy_construction();
+  }
+  static Alloc select_on_container_copy_construction_impl(char,
+                                                          const Alloc& a) {
+    return a;
+  }
+};
+
+namespace memory_internal {
+
+// This template alias transforms Alloc::is_nothrow into a metafunction with
+// Alloc as a parameter so it can be used with ExtractOrT<>.
+template <typename Alloc>
+using GetIsNothrow = typename Alloc::is_nothrow;
+
+}  // namespace memory_internal
+
+// ABSL_ALLOCATOR_NOTHROW is a build time configuration macro for user to
+// specify whether the default allocation function can throw or never throws.
+// If the allocation function never throws, user should define it to a non-zero
+// value (e.g. via `-DABSL_ALLOCATOR_NOTHROW`).
+// If the allocation function can throw, user should leave it undefined or
+// define it to zero.
+//
+// allocator_is_nothrow<Alloc> is a traits class that derives from
+// Alloc::is_nothrow if present, otherwise std::false_type. It's specialized
+// for Alloc = std::allocator<T> for any type T according to the state of
+// ABSL_ALLOCATOR_NOTHROW.
+//
+// default_allocator_is_nothrow is a class that derives from std::true_type
+// when the default allocator (global operator new) never throws, and
+// std::false_type when it can throw. It is a convenience shorthand for writing
+// allocator_is_nothrow<std::allocator<T>> (T can be any type).
+// NOTE: allocator_is_nothrow<std::allocator<T>> is guaranteed to derive from
+// the same type for all T, because users should specialize neither
+// allocator_is_nothrow nor std::allocator.
+template <typename Alloc>
+struct allocator_is_nothrow
+    : memory_internal::ExtractOrT<memory_internal::GetIsNothrow, Alloc,
+                                  std::false_type> {};
+
+#if defined(ABSL_ALLOCATOR_NOTHROW) && ABSL_ALLOCATOR_NOTHROW
+template <typename T>
+struct allocator_is_nothrow<std::allocator<T>> : std::true_type {};
+struct default_allocator_is_nothrow : std::true_type {};
+#else
+struct default_allocator_is_nothrow : std::false_type {};
+#endif
+
+namespace memory_internal {
+template <typename Allocator, typename Iterator, typename... Args>
+void ConstructRange(Allocator& alloc, Iterator first, Iterator last,
+                    const Args&... args) {
+  for (Iterator cur = first; cur != last; ++cur) {
+    ABSL_INTERNAL_TRY {
+      std::allocator_traits<Allocator>::construct(alloc, std::addressof(*cur),
+                                                  args...);
+    }
+    ABSL_INTERNAL_CATCH_ANY {
+      while (cur != first) {
+        --cur;
+        std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur));
+      }
+      ABSL_INTERNAL_RETHROW;
+    }
+  }
+}
+
+template <typename Allocator, typename Iterator, typename InputIterator>
+void CopyRange(Allocator& alloc, Iterator destination, InputIterator first,
+               InputIterator last) {
+  for (Iterator cur = destination; first != last;
+       static_cast<void>(++cur), static_cast<void>(++first)) {
+    ABSL_INTERNAL_TRY {
+      std::allocator_traits<Allocator>::construct(alloc, std::addressof(*cur),
+                                                  *first);
+    }
+    ABSL_INTERNAL_CATCH_ANY {
+      while (cur != destination) {
+        --cur;
+        std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur));
+      }
+      ABSL_INTERNAL_RETHROW;
+    }
+  }
+}
+}  // namespace memory_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_MEMORY_MEMORY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/meta/type_traits.h b/ChattingApp 000/Pods/abseil/absl/meta/type_traits.h
new file mode 100644
index 0000000..ba87d2f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/meta/type_traits.h	
@@ -0,0 +1,759 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// type_traits.h
+// -----------------------------------------------------------------------------
+//
+// This file contains C++11-compatible versions of standard <type_traits> API
+// functions for determining the characteristics of types. Such traits can
+// support type inference, classification, and transformation, as well as
+// make it easier to write templates based on generic type behavior.
+//
+// See https://en.cppreference.com/w/cpp/header/type_traits
+//
+// WARNING: use of many of the constructs in this header will count as "complex
+// template metaprogramming", so before proceeding, please carefully consider
+// https://google.github.io/styleguide/cppguide.html#Template_metaprogramming
+//
+// WARNING: using template metaprogramming to detect or depend on API
+// features is brittle and not guaranteed. Neither the standard library nor
+// Abseil provides any guarantee that APIs are stable in the face of template
+// metaprogramming. Use with caution.
+#ifndef ABSL_META_TYPE_TRAITS_H_
+#define ABSL_META_TYPE_TRAITS_H_
+
+#include <stddef.h>
+#include <functional>
+#include <type_traits>
+
+#include "absl/base/config.h"
+
+// MSVC constructibility traits do not detect destructor properties and so our
+// implementations should not use them as a source-of-truth.
+#if defined(_MSC_VER) && !defined(__clang__) && !defined(__GNUC__)
+#define ABSL_META_INTERNAL_STD_CONSTRUCTION_TRAITS_DONT_CHECK_DESTRUCTION 1
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Defined and documented later on in this file.
+template <typename T>
+struct is_trivially_destructible;
+
+// Defined and documented later on in this file.
+template <typename T>
+struct is_trivially_move_assignable;
+
+namespace type_traits_internal {
+
+// Silence MSVC warnings about the destructor being defined as deleted.
+#if defined(_MSC_VER) && !defined(__GNUC__)
+#pragma warning(push)
+#pragma warning(disable : 4624)
+#endif  // defined(_MSC_VER) && !defined(__GNUC__)
+
+template <class T>
+union SingleMemberUnion {
+  T t;
+};
+
+// Restore the state of the destructor warning that was silenced above.
+#if defined(_MSC_VER) && !defined(__GNUC__)
+#pragma warning(pop)
+#endif  // defined(_MSC_VER) && !defined(__GNUC__)
+
+template <class T>
+struct IsTriviallyMoveConstructibleObject
+    : std::integral_constant<
+          bool, std::is_move_constructible<
+                    type_traits_internal::SingleMemberUnion<T>>::value &&
+                    absl::is_trivially_destructible<T>::value> {};
+
+template <class T>
+struct IsTriviallyCopyConstructibleObject
+    : std::integral_constant<
+          bool, std::is_copy_constructible<
+                    type_traits_internal::SingleMemberUnion<T>>::value &&
+                    absl::is_trivially_destructible<T>::value> {};
+
+template <class T>
+struct IsTriviallyMoveAssignableReference : std::false_type {};
+
+template <class T>
+struct IsTriviallyMoveAssignableReference<T&>
+    : absl::is_trivially_move_assignable<T>::type {};
+
+template <class T>
+struct IsTriviallyMoveAssignableReference<T&&>
+    : absl::is_trivially_move_assignable<T>::type {};
+
+template <typename... Ts>
+struct VoidTImpl {
+  using type = void;
+};
+
+// This trick to retrieve a default alignment is necessary for our
+// implementation of aligned_storage_t to be consistent with any implementation
+// of std::aligned_storage.
+template <size_t Len, typename T = std::aligned_storage<Len>>
+struct default_alignment_of_aligned_storage;
+
+template <size_t Len, size_t Align>
+struct default_alignment_of_aligned_storage<Len,
+                                            std::aligned_storage<Len, Align>> {
+  static constexpr size_t value = Align;
+};
+
+////////////////////////////////
+// Library Fundamentals V2 TS //
+////////////////////////////////
+
+// NOTE: The `is_detected` family of templates here differ from the library
+// fundamentals specification in that for library fundamentals, `Op<Args...>` is
+// evaluated as soon as the type `is_detected<Op, Args...>` undergoes
+// substitution, regardless of whether or not the `::value` is accessed. That
+// is inconsistent with all other standard traits and prevents lazy evaluation
+// in larger contexts (such as if the `is_detected` check is a trailing argument
+// of a `conjunction`. This implementation opts to instead be lazy in the same
+// way that the standard traits are (this "defect" of the detection idiom
+// specifications has been reported).
+
+template <class Enabler, template <class...> class Op, class... Args>
+struct is_detected_impl {
+  using type = std::false_type;
+};
+
+template <template <class...> class Op, class... Args>
+struct is_detected_impl<typename VoidTImpl<Op<Args...>>::type, Op, Args...> {
+  using type = std::true_type;
+};
+
+template <template <class...> class Op, class... Args>
+struct is_detected : is_detected_impl<void, Op, Args...>::type {};
+
+template <class Enabler, class To, template <class...> class Op, class... Args>
+struct is_detected_convertible_impl {
+  using type = std::false_type;
+};
+
+template <class To, template <class...> class Op, class... Args>
+struct is_detected_convertible_impl<
+    typename std::enable_if<std::is_convertible<Op<Args...>, To>::value>::type,
+    To, Op, Args...> {
+  using type = std::true_type;
+};
+
+template <class To, template <class...> class Op, class... Args>
+struct is_detected_convertible
+    : is_detected_convertible_impl<void, To, Op, Args...>::type {};
+
+template <typename T>
+using IsCopyAssignableImpl =
+    decltype(std::declval<T&>() = std::declval<const T&>());
+
+template <typename T>
+using IsMoveAssignableImpl = decltype(std::declval<T&>() = std::declval<T&&>());
+
+}  // namespace type_traits_internal
+
+// MSVC 19.20 has a regression that causes our workarounds to fail, but their
+// std forms now appear to be compliant.
+#if defined(_MSC_VER) && !defined(__clang__) && (_MSC_VER >= 1920)
+
+template <typename T>
+using is_copy_assignable = std::is_copy_assignable<T>;
+
+template <typename T>
+using is_move_assignable = std::is_move_assignable<T>;
+
+#else
+
+template <typename T>
+struct is_copy_assignable : type_traits_internal::is_detected<
+                                type_traits_internal::IsCopyAssignableImpl, T> {
+};
+
+template <typename T>
+struct is_move_assignable : type_traits_internal::is_detected<
+                                type_traits_internal::IsMoveAssignableImpl, T> {
+};
+
+#endif
+
+// void_t()
+//
+// Ignores the type of any its arguments and returns `void`. In general, this
+// metafunction allows you to create a general case that maps to `void` while
+// allowing specializations that map to specific types.
+//
+// This metafunction is designed to be a drop-in replacement for the C++17
+// `std::void_t` metafunction.
+//
+// NOTE: `absl::void_t` does not use the standard-specified implementation so
+// that it can remain compatible with gcc < 5.1. This can introduce slightly
+// different behavior, such as when ordering partial specializations.
+template <typename... Ts>
+using void_t = typename type_traits_internal::VoidTImpl<Ts...>::type;
+
+// conjunction
+//
+// Performs a compile-time logical AND operation on the passed types (which
+// must have  `::value` members convertible to `bool`. Short-circuits if it
+// encounters any `false` members (and does not compare the `::value` members
+// of any remaining arguments).
+//
+// This metafunction is designed to be a drop-in replacement for the C++17
+// `std::conjunction` metafunction.
+template <typename... Ts>
+struct conjunction;
+
+template <typename T, typename... Ts>
+struct conjunction<T, Ts...>
+    : std::conditional<T::value, conjunction<Ts...>, T>::type {};
+
+template <typename T>
+struct conjunction<T> : T {};
+
+template <>
+struct conjunction<> : std::true_type {};
+
+// disjunction
+//
+// Performs a compile-time logical OR operation on the passed types (which
+// must have  `::value` members convertible to `bool`. Short-circuits if it
+// encounters any `true` members (and does not compare the `::value` members
+// of any remaining arguments).
+//
+// This metafunction is designed to be a drop-in replacement for the C++17
+// `std::disjunction` metafunction.
+template <typename... Ts>
+struct disjunction;
+
+template <typename T, typename... Ts>
+struct disjunction<T, Ts...> :
+      std::conditional<T::value, T, disjunction<Ts...>>::type {};
+
+template <typename T>
+struct disjunction<T> : T {};
+
+template <>
+struct disjunction<> : std::false_type {};
+
+// negation
+//
+// Performs a compile-time logical NOT operation on the passed type (which
+// must have  `::value` members convertible to `bool`.
+//
+// This metafunction is designed to be a drop-in replacement for the C++17
+// `std::negation` metafunction.
+template <typename T>
+struct negation : std::integral_constant<bool, !T::value> {};
+
+// is_function()
+//
+// Determines whether the passed type `T` is a function type.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_function()` metafunction for platforms that have incomplete C++11
+// support (such as libstdc++ 4.x).
+//
+// This metafunction works because appending `const` to a type does nothing to
+// function types and reference types (and forms a const-qualified type
+// otherwise).
+template <typename T>
+struct is_function
+    : std::integral_constant<
+          bool, !(std::is_reference<T>::value ||
+                  std::is_const<typename std::add_const<T>::type>::value)> {};
+
+// is_trivially_destructible()
+//
+// Determines whether the passed type `T` is trivially destructible.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_destructible()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). On any platforms that do
+// fully support C++11, we check whether this yields the same result as the std
+// implementation.
+//
+// NOTE: the extensions (__has_trivial_xxx) are implemented in gcc (version >=
+// 4.3) and clang. Since we are supporting libstdc++ > 4.7, they should always
+// be present. These  extensions are documented at
+// https://gcc.gnu.org/onlinedocs/gcc/Type-Traits.html#Type-Traits.
+template <typename T>
+struct is_trivially_destructible
+    : std::integral_constant<bool, __has_trivial_destructor(T) &&
+                                   std::is_destructible<T>::value> {
+#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE
+ private:
+  static constexpr bool compliant = std::is_trivially_destructible<T>::value ==
+                                    is_trivially_destructible::value;
+  static_assert(compliant || std::is_trivially_destructible<T>::value,
+                "Not compliant with std::is_trivially_destructible; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_destructible<T>::value,
+                "Not compliant with std::is_trivially_destructible; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE
+};
+
+// is_trivially_default_constructible()
+//
+// Determines whether the passed type `T` is trivially default constructible.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_default_constructible()` metafunction for platforms that
+// have incomplete C++11 support (such as libstdc++ 4.x). On any platforms that
+// do fully support C++11, we check whether this yields the same result as the
+// std implementation.
+//
+// NOTE: according to the C++ standard, Section: 20.15.4.3 [meta.unary.prop]
+// "The predicate condition for a template specialization is_constructible<T,
+// Args...> shall be satisfied if and only if the following variable
+// definition would be well-formed for some invented variable t:
+//
+// T t(declval<Args>()...);
+//
+// is_trivially_constructible<T, Args...> additionally requires that the
+// variable definition does not call any operation that is not trivial.
+// For the purposes of this check, the call to std::declval is considered
+// trivial."
+//
+// Notes from https://en.cppreference.com/w/cpp/types/is_constructible:
+// In many implementations, is_nothrow_constructible also checks if the
+// destructor throws because it is effectively noexcept(T(arg)). Same
+// applies to is_trivially_constructible, which, in these implementations, also
+// requires that the destructor is trivial.
+// GCC bug 51452: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51452
+// LWG issue 2116: http://cplusplus.github.io/LWG/lwg-active.html#2116.
+//
+// "T obj();" need to be well-formed and not call any nontrivial operation.
+// Nontrivially destructible types will cause the expression to be nontrivial.
+template <typename T>
+struct is_trivially_default_constructible
+    : std::integral_constant<bool, __has_trivial_constructor(T) &&
+                                   std::is_default_constructible<T>::value &&
+                                   is_trivially_destructible<T>::value> {
+#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE) && \
+    !defined(                                            \
+        ABSL_META_INTERNAL_STD_CONSTRUCTION_TRAITS_DONT_CHECK_DESTRUCTION)
+ private:
+  static constexpr bool compliant =
+      std::is_trivially_default_constructible<T>::value ==
+      is_trivially_default_constructible::value;
+  static_assert(compliant || std::is_trivially_default_constructible<T>::value,
+                "Not compliant with std::is_trivially_default_constructible; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_default_constructible<T>::value,
+                "Not compliant with std::is_trivially_default_constructible; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE
+};
+
+// is_trivially_move_constructible()
+//
+// Determines whether the passed type `T` is trivially move constructible.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_move_constructible()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). On any platforms that do
+// fully support C++11, we check whether this yields the same result as the std
+// implementation.
+//
+// NOTE: `T obj(declval<T>());` needs to be well-formed and not call any
+// nontrivial operation.  Nontrivially destructible types will cause the
+// expression to be nontrivial.
+template <typename T>
+struct is_trivially_move_constructible
+    : std::conditional<
+          std::is_object<T>::value && !std::is_array<T>::value,
+          type_traits_internal::IsTriviallyMoveConstructibleObject<T>,
+          std::is_reference<T>>::type::type {
+#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE) && \
+    !defined(                                            \
+        ABSL_META_INTERNAL_STD_CONSTRUCTION_TRAITS_DONT_CHECK_DESTRUCTION)
+ private:
+  static constexpr bool compliant =
+      std::is_trivially_move_constructible<T>::value ==
+      is_trivially_move_constructible::value;
+  static_assert(compliant || std::is_trivially_move_constructible<T>::value,
+                "Not compliant with std::is_trivially_move_constructible; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_move_constructible<T>::value,
+                "Not compliant with std::is_trivially_move_constructible; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE
+};
+
+// is_trivially_copy_constructible()
+//
+// Determines whether the passed type `T` is trivially copy constructible.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_copy_constructible()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). On any platforms that do
+// fully support C++11, we check whether this yields the same result as the std
+// implementation.
+//
+// NOTE: `T obj(declval<const T&>());` needs to be well-formed and not call any
+// nontrivial operation.  Nontrivially destructible types will cause the
+// expression to be nontrivial.
+template <typename T>
+struct is_trivially_copy_constructible
+    : std::conditional<
+          std::is_object<T>::value && !std::is_array<T>::value,
+          type_traits_internal::IsTriviallyCopyConstructibleObject<T>,
+          std::is_lvalue_reference<T>>::type::type {
+#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE) && \
+    !defined(                                            \
+        ABSL_META_INTERNAL_STD_CONSTRUCTION_TRAITS_DONT_CHECK_DESTRUCTION)
+ private:
+  static constexpr bool compliant =
+      std::is_trivially_copy_constructible<T>::value ==
+      is_trivially_copy_constructible::value;
+  static_assert(compliant || std::is_trivially_copy_constructible<T>::value,
+                "Not compliant with std::is_trivially_copy_constructible; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_copy_constructible<T>::value,
+                "Not compliant with std::is_trivially_copy_constructible; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE
+};
+
+// is_trivially_move_assignable()
+//
+// Determines whether the passed type `T` is trivially move assignable.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_move_assignable()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). On any platforms that do
+// fully support C++11, we check whether this yields the same result as the std
+// implementation.
+//
+// NOTE: `is_assignable<T, U>::value` is `true` if the expression
+// `declval<T>() = declval<U>()` is well-formed when treated as an unevaluated
+// operand. `is_trivially_assignable<T, U>` requires the assignment to call no
+// operation that is not trivial. `is_trivially_copy_assignable<T>` is simply
+// `is_trivially_assignable<T&, T>`.
+template <typename T>
+struct is_trivially_move_assignable
+    : std::conditional<
+          std::is_object<T>::value && !std::is_array<T>::value &&
+              std::is_move_assignable<T>::value,
+          std::is_move_assignable<type_traits_internal::SingleMemberUnion<T>>,
+          type_traits_internal::IsTriviallyMoveAssignableReference<T>>::type::
+          type {
+#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE
+ private:
+  static constexpr bool compliant =
+      std::is_trivially_move_assignable<T>::value ==
+      is_trivially_move_assignable::value;
+  static_assert(compliant || std::is_trivially_move_assignable<T>::value,
+                "Not compliant with std::is_trivially_move_assignable; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_move_assignable<T>::value,
+                "Not compliant with std::is_trivially_move_assignable; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE
+};
+
+// is_trivially_copy_assignable()
+//
+// Determines whether the passed type `T` is trivially copy assignable.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_copy_assignable()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). On any platforms that do
+// fully support C++11, we check whether this yields the same result as the std
+// implementation.
+//
+// NOTE: `is_assignable<T, U>::value` is `true` if the expression
+// `declval<T>() = declval<U>()` is well-formed when treated as an unevaluated
+// operand. `is_trivially_assignable<T, U>` requires the assignment to call no
+// operation that is not trivial. `is_trivially_copy_assignable<T>` is simply
+// `is_trivially_assignable<T&, const T&>`.
+template <typename T>
+struct is_trivially_copy_assignable
+    : std::integral_constant<
+          bool, __has_trivial_assign(typename std::remove_reference<T>::type) &&
+                    absl::is_copy_assignable<T>::value> {
+#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE
+ private:
+  static constexpr bool compliant =
+      std::is_trivially_copy_assignable<T>::value ==
+      is_trivially_copy_assignable::value;
+  static_assert(compliant || std::is_trivially_copy_assignable<T>::value,
+                "Not compliant with std::is_trivially_copy_assignable; "
+                "Standard: false, Implementation: true");
+  static_assert(compliant || !std::is_trivially_copy_assignable<T>::value,
+                "Not compliant with std::is_trivially_copy_assignable; "
+                "Standard: true, Implementation: false");
+#endif  // ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE
+};
+
+namespace type_traits_internal {
+// is_trivially_copyable()
+//
+// Determines whether the passed type `T` is trivially copyable.
+//
+// This metafunction is designed to be a drop-in replacement for the C++11
+// `std::is_trivially_copyable()` metafunction for platforms that have
+// incomplete C++11 support (such as libstdc++ 4.x). We use the C++17 definition
+// of TriviallyCopyable.
+//
+// NOTE: `is_trivially_copyable<T>::value` is `true` if all of T's copy/move
+// constructors/assignment operators are trivial or deleted, T has at least
+// one non-deleted copy/move constructor/assignment operator, and T is trivially
+// destructible. Arrays of trivially copyable types are trivially copyable.
+//
+// We expose this metafunction only for internal use within absl.
+template <typename T>
+class is_trivially_copyable_impl {
+  using ExtentsRemoved = typename std::remove_all_extents<T>::type;
+  static constexpr bool kIsCopyOrMoveConstructible =
+      std::is_copy_constructible<ExtentsRemoved>::value ||
+      std::is_move_constructible<ExtentsRemoved>::value;
+  static constexpr bool kIsCopyOrMoveAssignable =
+      absl::is_copy_assignable<ExtentsRemoved>::value ||
+      absl::is_move_assignable<ExtentsRemoved>::value;
+
+ public:
+  static constexpr bool kValue =
+      (__has_trivial_copy(ExtentsRemoved) || !kIsCopyOrMoveConstructible) &&
+      (__has_trivial_assign(ExtentsRemoved) || !kIsCopyOrMoveAssignable) &&
+      (kIsCopyOrMoveConstructible || kIsCopyOrMoveAssignable) &&
+      is_trivially_destructible<ExtentsRemoved>::value &&
+      // We need to check for this explicitly because otherwise we'll say
+      // references are trivial copyable when compiled by MSVC.
+      !std::is_reference<ExtentsRemoved>::value;
+};
+
+template <typename T>
+struct is_trivially_copyable
+    : std::integral_constant<
+          bool, type_traits_internal::is_trivially_copyable_impl<T>::kValue> {};
+}  // namespace type_traits_internal
+
+// -----------------------------------------------------------------------------
+// C++14 "_t" trait aliases
+// -----------------------------------------------------------------------------
+
+template <typename T>
+using remove_cv_t = typename std::remove_cv<T>::type;
+
+template <typename T>
+using remove_const_t = typename std::remove_const<T>::type;
+
+template <typename T>
+using remove_volatile_t = typename std::remove_volatile<T>::type;
+
+template <typename T>
+using add_cv_t = typename std::add_cv<T>::type;
+
+template <typename T>
+using add_const_t = typename std::add_const<T>::type;
+
+template <typename T>
+using add_volatile_t = typename std::add_volatile<T>::type;
+
+template <typename T>
+using remove_reference_t = typename std::remove_reference<T>::type;
+
+template <typename T>
+using add_lvalue_reference_t = typename std::add_lvalue_reference<T>::type;
+
+template <typename T>
+using add_rvalue_reference_t = typename std::add_rvalue_reference<T>::type;
+
+template <typename T>
+using remove_pointer_t = typename std::remove_pointer<T>::type;
+
+template <typename T>
+using add_pointer_t = typename std::add_pointer<T>::type;
+
+template <typename T>
+using make_signed_t = typename std::make_signed<T>::type;
+
+template <typename T>
+using make_unsigned_t = typename std::make_unsigned<T>::type;
+
+template <typename T>
+using remove_extent_t = typename std::remove_extent<T>::type;
+
+template <typename T>
+using remove_all_extents_t = typename std::remove_all_extents<T>::type;
+
+template <size_t Len, size_t Align = type_traits_internal::
+                          default_alignment_of_aligned_storage<Len>::value>
+using aligned_storage_t = typename std::aligned_storage<Len, Align>::type;
+
+template <typename T>
+using decay_t = typename std::decay<T>::type;
+
+template <bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+template <bool B, typename T, typename F>
+using conditional_t = typename std::conditional<B, T, F>::type;
+
+template <typename... T>
+using common_type_t = typename std::common_type<T...>::type;
+
+template <typename T>
+using underlying_type_t = typename std::underlying_type<T>::type;
+
+template <typename T>
+using result_of_t = typename std::result_of<T>::type;
+
+namespace type_traits_internal {
+// In MSVC we can't probe std::hash or stdext::hash because it triggers a
+// static_assert instead of failing substitution. Libc++ prior to 4.0
+// also used a static_assert.
+//
+#if defined(_MSC_VER) || (defined(_LIBCPP_VERSION) && \
+                          _LIBCPP_VERSION < 4000 && _LIBCPP_STD_VER > 11)
+#define ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_ 0
+#else
+#define ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_ 1
+#endif
+
+#if !ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_
+template <typename Key, typename = size_t>
+struct IsHashable : std::true_type {};
+#else   // ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_
+template <typename Key, typename = void>
+struct IsHashable : std::false_type {};
+
+template <typename Key>
+struct IsHashable<
+    Key,
+    absl::enable_if_t<std::is_convertible<
+        decltype(std::declval<std::hash<Key>&>()(std::declval<Key const&>())),
+        std::size_t>::value>> : std::true_type {};
+#endif  // !ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_
+
+struct AssertHashEnabledHelper {
+ private:
+  static void Sink(...) {}
+  struct NAT {};
+
+  template <class Key>
+  static auto GetReturnType(int)
+      -> decltype(std::declval<std::hash<Key>>()(std::declval<Key const&>()));
+  template <class Key>
+  static NAT GetReturnType(...);
+
+  template <class Key>
+  static std::nullptr_t DoIt() {
+    static_assert(IsHashable<Key>::value,
+                  "std::hash<Key> does not provide a call operator");
+    static_assert(
+        std::is_default_constructible<std::hash<Key>>::value,
+        "std::hash<Key> must be default constructible when it is enabled");
+    static_assert(
+        std::is_copy_constructible<std::hash<Key>>::value,
+        "std::hash<Key> must be copy constructible when it is enabled");
+    static_assert(absl::is_copy_assignable<std::hash<Key>>::value,
+                  "std::hash<Key> must be copy assignable when it is enabled");
+    // is_destructible is unchecked as it's implied by each of the
+    // is_constructible checks.
+    using ReturnType = decltype(GetReturnType<Key>(0));
+    static_assert(std::is_same<ReturnType, NAT>::value ||
+                      std::is_same<ReturnType, size_t>::value,
+                  "std::hash<Key> must return size_t");
+    return nullptr;
+  }
+
+  template <class... Ts>
+  friend void AssertHashEnabled();
+};
+
+template <class... Ts>
+inline void AssertHashEnabled() {
+  using Helper = AssertHashEnabledHelper;
+  Helper::Sink(Helper::DoIt<Ts>()...);
+}
+
+}  // namespace type_traits_internal
+
+// An internal namespace that is required to implement the C++17 swap traits.
+// It is not further nested in type_traits_internal to avoid long symbol names.
+namespace swap_internal {
+
+// Necessary for the traits.
+using std::swap;
+
+// This declaration prevents global `swap` and `absl::swap` overloads from being
+// considered unless ADL picks them up.
+void swap();
+
+template <class T>
+using IsSwappableImpl = decltype(swap(std::declval<T&>(), std::declval<T&>()));
+
+// NOTE: This dance with the default template parameter is for MSVC.
+template <class T,
+          class IsNoexcept = std::integral_constant<
+              bool, noexcept(swap(std::declval<T&>(), std::declval<T&>()))>>
+using IsNothrowSwappableImpl = typename std::enable_if<IsNoexcept::value>::type;
+
+// IsSwappable
+//
+// Determines whether the standard swap idiom is a valid expression for
+// arguments of type `T`.
+template <class T>
+struct IsSwappable
+    : absl::type_traits_internal::is_detected<IsSwappableImpl, T> {};
+
+// IsNothrowSwappable
+//
+// Determines whether the standard swap idiom is a valid expression for
+// arguments of type `T` and is noexcept.
+template <class T>
+struct IsNothrowSwappable
+    : absl::type_traits_internal::is_detected<IsNothrowSwappableImpl, T> {};
+
+// Swap()
+//
+// Performs the swap idiom from a namespace where valid candidates may only be
+// found in `std` or via ADL.
+template <class T, absl::enable_if_t<IsSwappable<T>::value, int> = 0>
+void Swap(T& lhs, T& rhs) noexcept(IsNothrowSwappable<T>::value) {
+  swap(lhs, rhs);
+}
+
+// StdSwapIsUnconstrained
+//
+// Some standard library implementations are broken in that they do not
+// constrain `std::swap`. This will effectively tell us if we are dealing with
+// one of those implementations.
+using StdSwapIsUnconstrained = IsSwappable<void()>;
+
+}  // namespace swap_internal
+
+namespace type_traits_internal {
+
+// Make the swap-related traits/function accessible from this namespace.
+using swap_internal::IsNothrowSwappable;
+using swap_internal::IsSwappable;
+using swap_internal::Swap;
+using swap_internal::StdSwapIsUnconstrained;
+
+}  // namespace type_traits_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_META_TYPE_TRAITS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/numeric/int128.cc b/ChattingApp 000/Pods/abseil/absl/numeric/int128.cc
new file mode 100644
index 0000000..b605a87
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/numeric/int128.cc	
@@ -0,0 +1,404 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/numeric/int128.h"
+
+#include <stddef.h>
+#include <cassert>
+#include <iomanip>
+#include <ostream>  // NOLINT(readability/streams)
+#include <sstream>
+#include <string>
+#include <type_traits>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+ABSL_DLL const uint128 kuint128max = MakeUint128(
+    std::numeric_limits<uint64_t>::max(), std::numeric_limits<uint64_t>::max());
+
+namespace {
+
+// Returns the 0-based position of the last set bit (i.e., most significant bit)
+// in the given uint64_t. The argument may not be 0.
+//
+// For example:
+//   Given: 5 (decimal) == 101 (binary)
+//   Returns: 2
+#define STEP(T, n, pos, sh)                   \
+  do {                                        \
+    if ((n) >= (static_cast<T>(1) << (sh))) { \
+      (n) = (n) >> (sh);                      \
+      (pos) |= (sh);                          \
+    }                                         \
+  } while (0)
+static inline int Fls64(uint64_t n) {
+  assert(n != 0);
+  int pos = 0;
+  STEP(uint64_t, n, pos, 0x20);
+  uint32_t n32 = static_cast<uint32_t>(n);
+  STEP(uint32_t, n32, pos, 0x10);
+  STEP(uint32_t, n32, pos, 0x08);
+  STEP(uint32_t, n32, pos, 0x04);
+  return pos + ((uint64_t{0x3333333322221100} >> (n32 << 2)) & 0x3);
+}
+#undef STEP
+
+// Like Fls64() above, but returns the 0-based position of the last set bit
+// (i.e., most significant bit) in the given uint128. The argument may not be 0.
+static inline int Fls128(uint128 n) {
+  if (uint64_t hi = Uint128High64(n)) {
+    return Fls64(hi) + 64;
+  }
+  return Fls64(Uint128Low64(n));
+}
+
+// Long division/modulo for uint128 implemented using the shift-subtract
+// division algorithm adapted from:
+// https://stackoverflow.com/questions/5386377/division-without-using
+void DivModImpl(uint128 dividend, uint128 divisor, uint128* quotient_ret,
+                uint128* remainder_ret) {
+  assert(divisor != 0);
+
+  if (divisor > dividend) {
+    *quotient_ret = 0;
+    *remainder_ret = dividend;
+    return;
+  }
+
+  if (divisor == dividend) {
+    *quotient_ret = 1;
+    *remainder_ret = 0;
+    return;
+  }
+
+  uint128 denominator = divisor;
+  uint128 quotient = 0;
+
+  // Left aligns the MSB of the denominator and the dividend.
+  const int shift = Fls128(dividend) - Fls128(denominator);
+  denominator <<= shift;
+
+  // Uses shift-subtract algorithm to divide dividend by denominator. The
+  // remainder will be left in dividend.
+  for (int i = 0; i <= shift; ++i) {
+    quotient <<= 1;
+    if (dividend >= denominator) {
+      dividend -= denominator;
+      quotient |= 1;
+    }
+    denominator >>= 1;
+  }
+
+  *quotient_ret = quotient;
+  *remainder_ret = dividend;
+}
+
+template <typename T>
+uint128 MakeUint128FromFloat(T v) {
+  static_assert(std::is_floating_point<T>::value, "");
+
+  // Rounding behavior is towards zero, same as for built-in types.
+
+  // Undefined behavior if v is NaN or cannot fit into uint128.
+  assert(std::isfinite(v) && v > -1 &&
+         (std::numeric_limits<T>::max_exponent <= 128 ||
+          v < std::ldexp(static_cast<T>(1), 128)));
+
+  if (v >= std::ldexp(static_cast<T>(1), 64)) {
+    uint64_t hi = static_cast<uint64_t>(std::ldexp(v, -64));
+    uint64_t lo = static_cast<uint64_t>(v - std::ldexp(static_cast<T>(hi), 64));
+    return MakeUint128(hi, lo);
+  }
+
+  return MakeUint128(0, static_cast<uint64_t>(v));
+}
+
+#if defined(__clang__) && !defined(__SSE3__)
+// Workaround for clang bug: https://bugs.llvm.org/show_bug.cgi?id=38289
+// Casting from long double to uint64_t is miscompiled and drops bits.
+// It is more work, so only use when we need the workaround.
+uint128 MakeUint128FromFloat(long double v) {
+  // Go 50 bits at a time, that fits in a double
+  static_assert(std::numeric_limits<double>::digits >= 50, "");
+  static_assert(std::numeric_limits<long double>::digits <= 150, "");
+  // Undefined behavior if v is not finite or cannot fit into uint128.
+  assert(std::isfinite(v) && v > -1 && v < std::ldexp(1.0L, 128));
+
+  v = std::ldexp(v, -100);
+  uint64_t w0 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
+  v = std::ldexp(v - static_cast<double>(w0), 50);
+  uint64_t w1 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
+  v = std::ldexp(v - static_cast<double>(w1), 50);
+  uint64_t w2 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
+  return (static_cast<uint128>(w0) << 100) | (static_cast<uint128>(w1) << 50) |
+         static_cast<uint128>(w2);
+}
+#endif  // __clang__ && !__SSE3__
+}  // namespace
+
+uint128::uint128(float v) : uint128(MakeUint128FromFloat(v)) {}
+uint128::uint128(double v) : uint128(MakeUint128FromFloat(v)) {}
+uint128::uint128(long double v) : uint128(MakeUint128FromFloat(v)) {}
+
+uint128 operator/(uint128 lhs, uint128 rhs) {
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+  return static_cast<unsigned __int128>(lhs) /
+         static_cast<unsigned __int128>(rhs);
+#else  // ABSL_HAVE_INTRINSIC_INT128
+  uint128 quotient = 0;
+  uint128 remainder = 0;
+  DivModImpl(lhs, rhs, &quotient, &remainder);
+  return quotient;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+}
+uint128 operator%(uint128 lhs, uint128 rhs) {
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+  return static_cast<unsigned __int128>(lhs) %
+         static_cast<unsigned __int128>(rhs);
+#else  // ABSL_HAVE_INTRINSIC_INT128
+  uint128 quotient = 0;
+  uint128 remainder = 0;
+  DivModImpl(lhs, rhs, &quotient, &remainder);
+  return remainder;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+}
+
+namespace {
+
+std::string Uint128ToFormattedString(uint128 v, std::ios_base::fmtflags flags) {
+  // Select a divisor which is the largest power of the base < 2^64.
+  uint128 div;
+  int div_base_log;
+  switch (flags & std::ios::basefield) {
+    case std::ios::hex:
+      div = 0x1000000000000000;  // 16^15
+      div_base_log = 15;
+      break;
+    case std::ios::oct:
+      div = 01000000000000000000000;  // 8^21
+      div_base_log = 21;
+      break;
+    default:  // std::ios::dec
+      div = 10000000000000000000u;  // 10^19
+      div_base_log = 19;
+      break;
+  }
+
+  // Now piece together the uint128 representation from three chunks of the
+  // original value, each less than "div" and therefore representable as a
+  // uint64_t.
+  std::ostringstream os;
+  std::ios_base::fmtflags copy_mask =
+      std::ios::basefield | std::ios::showbase | std::ios::uppercase;
+  os.setf(flags & copy_mask, copy_mask);
+  uint128 high = v;
+  uint128 low;
+  DivModImpl(high, div, &high, &low);
+  uint128 mid;
+  DivModImpl(high, div, &high, &mid);
+  if (Uint128Low64(high) != 0) {
+    os << Uint128Low64(high);
+    os << std::noshowbase << std::setfill('0') << std::setw(div_base_log);
+    os << Uint128Low64(mid);
+    os << std::setw(div_base_log);
+  } else if (Uint128Low64(mid) != 0) {
+    os << Uint128Low64(mid);
+    os << std::noshowbase << std::setfill('0') << std::setw(div_base_log);
+  }
+  os << Uint128Low64(low);
+  return os.str();
+}
+
+}  // namespace
+
+std::ostream& operator<<(std::ostream& os, uint128 v) {
+  std::ios_base::fmtflags flags = os.flags();
+  std::string rep = Uint128ToFormattedString(v, flags);
+
+  // Add the requisite padding.
+  std::streamsize width = os.width(0);
+  if (static_cast<size_t>(width) > rep.size()) {
+    std::ios::fmtflags adjustfield = flags & std::ios::adjustfield;
+    if (adjustfield == std::ios::left) {
+      rep.append(width - rep.size(), os.fill());
+    } else if (adjustfield == std::ios::internal &&
+               (flags & std::ios::showbase) &&
+               (flags & std::ios::basefield) == std::ios::hex && v != 0) {
+      rep.insert(2, width - rep.size(), os.fill());
+    } else {
+      rep.insert(0, width - rep.size(), os.fill());
+    }
+  }
+
+  return os << rep;
+}
+
+namespace {
+
+uint128 UnsignedAbsoluteValue(int128 v) {
+  // Cast to uint128 before possibly negating because -Int128Min() is undefined.
+  return Int128High64(v) < 0 ? -uint128(v) : uint128(v);
+}
+
+}  // namespace
+
+#if !defined(ABSL_HAVE_INTRINSIC_INT128)
+namespace {
+
+template <typename T>
+int128 MakeInt128FromFloat(T v) {
+  // Conversion when v is NaN or cannot fit into int128 would be undefined
+  // behavior if using an intrinsic 128-bit integer.
+  assert(std::isfinite(v) && (std::numeric_limits<T>::max_exponent <= 127 ||
+                              (v >= -std::ldexp(static_cast<T>(1), 127) &&
+                               v < std::ldexp(static_cast<T>(1), 127))));
+
+  // We must convert the absolute value and then negate as needed, because
+  // floating point types are typically sign-magnitude. Otherwise, the
+  // difference between the high and low 64 bits when interpreted as two's
+  // complement overwhelms the precision of the mantissa.
+  uint128 result = v < 0 ? -MakeUint128FromFloat(-v) : MakeUint128FromFloat(v);
+  return MakeInt128(int128_internal::BitCastToSigned(Uint128High64(result)),
+                    Uint128Low64(result));
+}
+
+}  // namespace
+
+int128::int128(float v) : int128(MakeInt128FromFloat(v)) {}
+int128::int128(double v) : int128(MakeInt128FromFloat(v)) {}
+int128::int128(long double v) : int128(MakeInt128FromFloat(v)) {}
+
+int128 operator/(int128 lhs, int128 rhs) {
+  assert(lhs != Int128Min() || rhs != -1);  // UB on two's complement.
+
+  uint128 quotient = 0;
+  uint128 remainder = 0;
+  DivModImpl(UnsignedAbsoluteValue(lhs), UnsignedAbsoluteValue(rhs),
+             &quotient, &remainder);
+  if ((Int128High64(lhs) < 0) != (Int128High64(rhs) < 0)) quotient = -quotient;
+  return MakeInt128(int128_internal::BitCastToSigned(Uint128High64(quotient)),
+                    Uint128Low64(quotient));
+}
+
+int128 operator%(int128 lhs, int128 rhs) {
+  assert(lhs != Int128Min() || rhs != -1);  // UB on two's complement.
+
+  uint128 quotient = 0;
+  uint128 remainder = 0;
+  DivModImpl(UnsignedAbsoluteValue(lhs), UnsignedAbsoluteValue(rhs),
+             &quotient, &remainder);
+  if (Int128High64(lhs) < 0) remainder = -remainder;
+  return MakeInt128(int128_internal::BitCastToSigned(Uint128High64(remainder)),
+                    Uint128Low64(remainder));
+}
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+std::ostream& operator<<(std::ostream& os, int128 v) {
+  std::ios_base::fmtflags flags = os.flags();
+  std::string rep;
+
+  // Add the sign if needed.
+  bool print_as_decimal =
+      (flags & std::ios::basefield) == std::ios::dec ||
+      (flags & std::ios::basefield) == std::ios_base::fmtflags();
+  if (print_as_decimal) {
+    if (Int128High64(v) < 0) {
+      rep = "-";
+    } else if (flags & std::ios::showpos) {
+      rep = "+";
+    }
+  }
+
+  rep.append(Uint128ToFormattedString(
+      print_as_decimal ? UnsignedAbsoluteValue(v) : uint128(v), os.flags()));
+
+  // Add the requisite padding.
+  std::streamsize width = os.width(0);
+  if (static_cast<size_t>(width) > rep.size()) {
+    switch (flags & std::ios::adjustfield) {
+      case std::ios::left:
+        rep.append(width - rep.size(), os.fill());
+        break;
+      case std::ios::internal:
+        if (print_as_decimal && (rep[0] == '+' || rep[0] == '-')) {
+          rep.insert(1, width - rep.size(), os.fill());
+        } else if ((flags & std::ios::basefield) == std::ios::hex &&
+                   (flags & std::ios::showbase) && v != 0) {
+          rep.insert(2, width - rep.size(), os.fill());
+        } else {
+          rep.insert(0, width - rep.size(), os.fill());
+        }
+        break;
+      default:  // std::ios::right
+        rep.insert(0, width - rep.size(), os.fill());
+        break;
+    }
+  }
+
+  return os << rep;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+namespace std {
+constexpr bool numeric_limits<absl::uint128>::is_specialized;
+constexpr bool numeric_limits<absl::uint128>::is_signed;
+constexpr bool numeric_limits<absl::uint128>::is_integer;
+constexpr bool numeric_limits<absl::uint128>::is_exact;
+constexpr bool numeric_limits<absl::uint128>::has_infinity;
+constexpr bool numeric_limits<absl::uint128>::has_quiet_NaN;
+constexpr bool numeric_limits<absl::uint128>::has_signaling_NaN;
+constexpr float_denorm_style numeric_limits<absl::uint128>::has_denorm;
+constexpr bool numeric_limits<absl::uint128>::has_denorm_loss;
+constexpr float_round_style numeric_limits<absl::uint128>::round_style;
+constexpr bool numeric_limits<absl::uint128>::is_iec559;
+constexpr bool numeric_limits<absl::uint128>::is_bounded;
+constexpr bool numeric_limits<absl::uint128>::is_modulo;
+constexpr int numeric_limits<absl::uint128>::digits;
+constexpr int numeric_limits<absl::uint128>::digits10;
+constexpr int numeric_limits<absl::uint128>::max_digits10;
+constexpr int numeric_limits<absl::uint128>::radix;
+constexpr int numeric_limits<absl::uint128>::min_exponent;
+constexpr int numeric_limits<absl::uint128>::min_exponent10;
+constexpr int numeric_limits<absl::uint128>::max_exponent;
+constexpr int numeric_limits<absl::uint128>::max_exponent10;
+constexpr bool numeric_limits<absl::uint128>::traps;
+constexpr bool numeric_limits<absl::uint128>::tinyness_before;
+
+constexpr bool numeric_limits<absl::int128>::is_specialized;
+constexpr bool numeric_limits<absl::int128>::is_signed;
+constexpr bool numeric_limits<absl::int128>::is_integer;
+constexpr bool numeric_limits<absl::int128>::is_exact;
+constexpr bool numeric_limits<absl::int128>::has_infinity;
+constexpr bool numeric_limits<absl::int128>::has_quiet_NaN;
+constexpr bool numeric_limits<absl::int128>::has_signaling_NaN;
+constexpr float_denorm_style numeric_limits<absl::int128>::has_denorm;
+constexpr bool numeric_limits<absl::int128>::has_denorm_loss;
+constexpr float_round_style numeric_limits<absl::int128>::round_style;
+constexpr bool numeric_limits<absl::int128>::is_iec559;
+constexpr bool numeric_limits<absl::int128>::is_bounded;
+constexpr bool numeric_limits<absl::int128>::is_modulo;
+constexpr int numeric_limits<absl::int128>::digits;
+constexpr int numeric_limits<absl::int128>::digits10;
+constexpr int numeric_limits<absl::int128>::max_digits10;
+constexpr int numeric_limits<absl::int128>::radix;
+constexpr int numeric_limits<absl::int128>::min_exponent;
+constexpr int numeric_limits<absl::int128>::min_exponent10;
+constexpr int numeric_limits<absl::int128>::max_exponent;
+constexpr int numeric_limits<absl::int128>::max_exponent10;
+constexpr bool numeric_limits<absl::int128>::traps;
+constexpr bool numeric_limits<absl::int128>::tinyness_before;
+}  // namespace std
diff --git a/ChattingApp 000/Pods/abseil/absl/numeric/int128.h b/ChattingApp 000/Pods/abseil/absl/numeric/int128.h
new file mode 100644
index 0000000..636e3a5
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/numeric/int128.h	
@@ -0,0 +1,1091 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: int128.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines 128-bit integer types, `uint128` and `int128`.
+
+#ifndef ABSL_NUMERIC_INT128_H_
+#define ABSL_NUMERIC_INT128_H_
+
+#include <cassert>
+#include <cmath>
+#include <cstdint>
+#include <cstring>
+#include <iosfwd>
+#include <limits>
+#include <utility>
+
+#include "absl/base/config.h"
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+
+#if defined(_MSC_VER)
+// In very old versions of MSVC and when the /Zc:wchar_t flag is off, wchar_t is
+// a typedef for unsigned short.  Otherwise wchar_t is mapped to the __wchar_t
+// builtin type.  We need to make sure not to define operator wchar_t()
+// alongside operator unsigned short() in these instances.
+#define ABSL_INTERNAL_WCHAR_T __wchar_t
+#if defined(_M_X64)
+#include <intrin.h>
+#pragma intrinsic(_umul128)
+#endif  // defined(_M_X64)
+#else   // defined(_MSC_VER)
+#define ABSL_INTERNAL_WCHAR_T wchar_t
+#endif  // defined(_MSC_VER)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class int128;
+
+// uint128
+//
+// An unsigned 128-bit integer type. The API is meant to mimic an intrinsic type
+// as closely as is practical, including exhibiting undefined behavior in
+// analogous cases (e.g. division by zero). This type is intended to be a
+// drop-in replacement once C++ supports an intrinsic `uint128_t` type; when
+// that occurs, existing well-behaved uses of `uint128` will continue to work
+// using that new type.
+//
+// Note: code written with this type will continue to compile once `uint128_t`
+// is introduced, provided the replacement helper functions
+// `Uint128(Low|High)64()` and `MakeUint128()` are made.
+//
+// A `uint128` supports the following:
+//
+//   * Implicit construction from integral types
+//   * Explicit conversion to integral types
+//
+// Additionally, if your compiler supports `__int128`, `uint128` is
+// interoperable with that type. (Abseil checks for this compatibility through
+// the `ABSL_HAVE_INTRINSIC_INT128` macro.)
+//
+// However, a `uint128` differs from intrinsic integral types in the following
+// ways:
+//
+//   * Errors on implicit conversions that do not preserve value (such as
+//     loss of precision when converting to float values).
+//   * Requires explicit construction from and conversion to floating point
+//     types.
+//   * Conversion to integral types requires an explicit static_cast() to
+//     mimic use of the `-Wnarrowing` compiler flag.
+//   * The alignment requirement of `uint128` may differ from that of an
+//     intrinsic 128-bit integer type depending on platform and build
+//     configuration.
+//
+// Example:
+//
+//     float y = absl::Uint128Max();  // Error. uint128 cannot be implicitly
+//                                    // converted to float.
+//
+//     absl::uint128 v;
+//     uint64_t i = v;                         // Error
+//     uint64_t i = static_cast<uint64_t>(v);  // OK
+//
+class
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+    alignas(unsigned __int128)
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+        uint128 {
+ public:
+  uint128() = default;
+
+  // Constructors from arithmetic types
+  constexpr uint128(int v);                 // NOLINT(runtime/explicit)
+  constexpr uint128(unsigned int v);        // NOLINT(runtime/explicit)
+  constexpr uint128(long v);                // NOLINT(runtime/int)
+  constexpr uint128(unsigned long v);       // NOLINT(runtime/int)
+  constexpr uint128(long long v);           // NOLINT(runtime/int)
+  constexpr uint128(unsigned long long v);  // NOLINT(runtime/int)
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  constexpr uint128(__int128 v);           // NOLINT(runtime/explicit)
+  constexpr uint128(unsigned __int128 v);  // NOLINT(runtime/explicit)
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  constexpr uint128(int128 v);  // NOLINT(runtime/explicit)
+  explicit uint128(float v);
+  explicit uint128(double v);
+  explicit uint128(long double v);
+
+  // Assignment operators from arithmetic types
+  uint128& operator=(int v);
+  uint128& operator=(unsigned int v);
+  uint128& operator=(long v);                // NOLINT(runtime/int)
+  uint128& operator=(unsigned long v);       // NOLINT(runtime/int)
+  uint128& operator=(long long v);           // NOLINT(runtime/int)
+  uint128& operator=(unsigned long long v);  // NOLINT(runtime/int)
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  uint128& operator=(__int128 v);
+  uint128& operator=(unsigned __int128 v);
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  uint128& operator=(int128 v);
+
+  // Conversion operators to other arithmetic types
+  constexpr explicit operator bool() const;
+  constexpr explicit operator char() const;
+  constexpr explicit operator signed char() const;
+  constexpr explicit operator unsigned char() const;
+  constexpr explicit operator char16_t() const;
+  constexpr explicit operator char32_t() const;
+  constexpr explicit operator ABSL_INTERNAL_WCHAR_T() const;
+  constexpr explicit operator short() const;  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned short() const;
+  constexpr explicit operator int() const;
+  constexpr explicit operator unsigned int() const;
+  constexpr explicit operator long() const;  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned long() const;
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator long long() const;
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned long long() const;
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  constexpr explicit operator __int128() const;
+  constexpr explicit operator unsigned __int128() const;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  explicit operator float() const;
+  explicit operator double() const;
+  explicit operator long double() const;
+
+  // Trivial copy constructor, assignment operator and destructor.
+
+  // Arithmetic operators.
+  uint128& operator+=(uint128 other);
+  uint128& operator-=(uint128 other);
+  uint128& operator*=(uint128 other);
+  // Long division/modulo for uint128.
+  uint128& operator/=(uint128 other);
+  uint128& operator%=(uint128 other);
+  uint128 operator++(int);
+  uint128 operator--(int);
+  uint128& operator<<=(int);
+  uint128& operator>>=(int);
+  uint128& operator&=(uint128 other);
+  uint128& operator|=(uint128 other);
+  uint128& operator^=(uint128 other);
+  uint128& operator++();
+  uint128& operator--();
+
+  // Uint128Low64()
+  //
+  // Returns the lower 64-bit value of a `uint128` value.
+  friend constexpr uint64_t Uint128Low64(uint128 v);
+
+  // Uint128High64()
+  //
+  // Returns the higher 64-bit value of a `uint128` value.
+  friend constexpr uint64_t Uint128High64(uint128 v);
+
+  // MakeUInt128()
+  //
+  // Constructs a `uint128` numeric value from two 64-bit unsigned integers.
+  // Note that this factory function is the only way to construct a `uint128`
+  // from integer values greater than 2^64.
+  //
+  // Example:
+  //
+  //   absl::uint128 big = absl::MakeUint128(1, 0);
+  friend constexpr uint128 MakeUint128(uint64_t high, uint64_t low);
+
+  // Uint128Max()
+  //
+  // Returns the highest value for a 128-bit unsigned integer.
+  friend constexpr uint128 Uint128Max();
+
+  // Support for absl::Hash.
+  template <typename H>
+  friend H AbslHashValue(H h, uint128 v) {
+    return H::combine(std::move(h), Uint128High64(v), Uint128Low64(v));
+  }
+
+ private:
+  constexpr uint128(uint64_t high, uint64_t low);
+
+  // TODO(strel) Update implementation to use __int128 once all users of
+  // uint128 are fixed to not depend on alignof(uint128) == 8. Also add
+  // alignas(16) to class definition to keep alignment consistent across
+  // platforms.
+#if defined(ABSL_IS_LITTLE_ENDIAN)
+  uint64_t lo_;
+  uint64_t hi_;
+#elif defined(ABSL_IS_BIG_ENDIAN)
+  uint64_t hi_;
+  uint64_t lo_;
+#else  // byte order
+#error "Unsupported byte order: must be little-endian or big-endian."
+#endif  // byte order
+};
+
+// Prefer to use the constexpr `Uint128Max()`.
+//
+// TODO(absl-team) deprecate kuint128max once migration tool is released.
+ABSL_DLL extern const uint128 kuint128max;
+
+// allow uint128 to be logged
+std::ostream& operator<<(std::ostream& os, uint128 v);
+
+// TODO(strel) add operator>>(std::istream&, uint128)
+
+constexpr uint128 Uint128Max() {
+  return uint128((std::numeric_limits<uint64_t>::max)(),
+                 (std::numeric_limits<uint64_t>::max)());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// Specialized numeric_limits for uint128.
+namespace std {
+template <>
+class numeric_limits<absl::uint128> {
+ public:
+  static constexpr bool is_specialized = true;
+  static constexpr bool is_signed = false;
+  static constexpr bool is_integer = true;
+  static constexpr bool is_exact = true;
+  static constexpr bool has_infinity = false;
+  static constexpr bool has_quiet_NaN = false;
+  static constexpr bool has_signaling_NaN = false;
+  static constexpr float_denorm_style has_denorm = denorm_absent;
+  static constexpr bool has_denorm_loss = false;
+  static constexpr float_round_style round_style = round_toward_zero;
+  static constexpr bool is_iec559 = false;
+  static constexpr bool is_bounded = true;
+  static constexpr bool is_modulo = true;
+  static constexpr int digits = 128;
+  static constexpr int digits10 = 38;
+  static constexpr int max_digits10 = 0;
+  static constexpr int radix = 2;
+  static constexpr int min_exponent = 0;
+  static constexpr int min_exponent10 = 0;
+  static constexpr int max_exponent = 0;
+  static constexpr int max_exponent10 = 0;
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool traps = numeric_limits<unsigned __int128>::traps;
+#else   // ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool traps = numeric_limits<uint64_t>::traps;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool tinyness_before = false;
+
+  static constexpr absl::uint128 (min)() { return 0; }
+  static constexpr absl::uint128 lowest() { return 0; }
+  static constexpr absl::uint128 (max)() { return absl::Uint128Max(); }
+  static constexpr absl::uint128 epsilon() { return 0; }
+  static constexpr absl::uint128 round_error() { return 0; }
+  static constexpr absl::uint128 infinity() { return 0; }
+  static constexpr absl::uint128 quiet_NaN() { return 0; }
+  static constexpr absl::uint128 signaling_NaN() { return 0; }
+  static constexpr absl::uint128 denorm_min() { return 0; }
+};
+}  // namespace std
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// int128
+//
+// A signed 128-bit integer type. The API is meant to mimic an intrinsic
+// integral type as closely as is practical, including exhibiting undefined
+// behavior in analogous cases (e.g. division by zero).
+//
+// An `int128` supports the following:
+//
+//   * Implicit construction from integral types
+//   * Explicit conversion to integral types
+//
+// However, an `int128` differs from intrinsic integral types in the following
+// ways:
+//
+//   * It is not implicitly convertible to other integral types.
+//   * Requires explicit construction from and conversion to floating point
+//     types.
+
+// Additionally, if your compiler supports `__int128`, `int128` is
+// interoperable with that type. (Abseil checks for this compatibility through
+// the `ABSL_HAVE_INTRINSIC_INT128` macro.)
+//
+// The design goal for `int128` is that it will be compatible with a future
+// `int128_t`, if that type becomes a part of the standard.
+//
+// Example:
+//
+//     float y = absl::int128(17);  // Error. int128 cannot be implicitly
+//                                  // converted to float.
+//
+//     absl::int128 v;
+//     int64_t i = v;                        // Error
+//     int64_t i = static_cast<int64_t>(v);  // OK
+//
+class int128 {
+ public:
+  int128() = default;
+
+  // Constructors from arithmetic types
+  constexpr int128(int v);                 // NOLINT(runtime/explicit)
+  constexpr int128(unsigned int v);        // NOLINT(runtime/explicit)
+  constexpr int128(long v);                // NOLINT(runtime/int)
+  constexpr int128(unsigned long v);       // NOLINT(runtime/int)
+  constexpr int128(long long v);           // NOLINT(runtime/int)
+  constexpr int128(unsigned long long v);  // NOLINT(runtime/int)
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  constexpr int128(__int128 v);  // NOLINT(runtime/explicit)
+  constexpr explicit int128(unsigned __int128 v);
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  constexpr explicit int128(uint128 v);
+  explicit int128(float v);
+  explicit int128(double v);
+  explicit int128(long double v);
+
+  // Assignment operators from arithmetic types
+  int128& operator=(int v);
+  int128& operator=(unsigned int v);
+  int128& operator=(long v);                // NOLINT(runtime/int)
+  int128& operator=(unsigned long v);       // NOLINT(runtime/int)
+  int128& operator=(long long v);           // NOLINT(runtime/int)
+  int128& operator=(unsigned long long v);  // NOLINT(runtime/int)
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  int128& operator=(__int128 v);
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+  // Conversion operators to other arithmetic types
+  constexpr explicit operator bool() const;
+  constexpr explicit operator char() const;
+  constexpr explicit operator signed char() const;
+  constexpr explicit operator unsigned char() const;
+  constexpr explicit operator char16_t() const;
+  constexpr explicit operator char32_t() const;
+  constexpr explicit operator ABSL_INTERNAL_WCHAR_T() const;
+  constexpr explicit operator short() const;  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned short() const;
+  constexpr explicit operator int() const;
+  constexpr explicit operator unsigned int() const;
+  constexpr explicit operator long() const;  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned long() const;
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator long long() const;
+  // NOLINTNEXTLINE(runtime/int)
+  constexpr explicit operator unsigned long long() const;
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  constexpr explicit operator __int128() const;
+  constexpr explicit operator unsigned __int128() const;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  explicit operator float() const;
+  explicit operator double() const;
+  explicit operator long double() const;
+
+  // Trivial copy constructor, assignment operator and destructor.
+
+  // Arithmetic operators
+  int128& operator+=(int128 other);
+  int128& operator-=(int128 other);
+  int128& operator*=(int128 other);
+  int128& operator/=(int128 other);
+  int128& operator%=(int128 other);
+  int128 operator++(int);  // postfix increment: i++
+  int128 operator--(int);  // postfix decrement: i--
+  int128& operator++();    // prefix increment:  ++i
+  int128& operator--();    // prefix decrement:  --i
+  int128& operator&=(int128 other);
+  int128& operator|=(int128 other);
+  int128& operator^=(int128 other);
+  int128& operator<<=(int amount);
+  int128& operator>>=(int amount);
+
+  // Int128Low64()
+  //
+  // Returns the lower 64-bit value of a `int128` value.
+  friend constexpr uint64_t Int128Low64(int128 v);
+
+  // Int128High64()
+  //
+  // Returns the higher 64-bit value of a `int128` value.
+  friend constexpr int64_t Int128High64(int128 v);
+
+  // MakeInt128()
+  //
+  // Constructs a `int128` numeric value from two 64-bit integers. Note that
+  // signedness is conveyed in the upper `high` value.
+  //
+  //   (absl::int128(1) << 64) * high + low
+  //
+  // Note that this factory function is the only way to construct a `int128`
+  // from integer values greater than 2^64 or less than -2^64.
+  //
+  // Example:
+  //
+  //   absl::int128 big = absl::MakeInt128(1, 0);
+  //   absl::int128 big_n = absl::MakeInt128(-1, 0);
+  friend constexpr int128 MakeInt128(int64_t high, uint64_t low);
+
+  // Int128Max()
+  //
+  // Returns the maximum value for a 128-bit signed integer.
+  friend constexpr int128 Int128Max();
+
+  // Int128Min()
+  //
+  // Returns the minimum value for a 128-bit signed integer.
+  friend constexpr int128 Int128Min();
+
+  // Support for absl::Hash.
+  template <typename H>
+  friend H AbslHashValue(H h, int128 v) {
+    return H::combine(std::move(h), Int128High64(v), Int128Low64(v));
+  }
+
+ private:
+  constexpr int128(int64_t high, uint64_t low);
+
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+  __int128 v_;
+#else  // ABSL_HAVE_INTRINSIC_INT128
+#if defined(ABSL_IS_LITTLE_ENDIAN)
+  uint64_t lo_;
+  int64_t hi_;
+#elif defined(ABSL_IS_BIG_ENDIAN)
+  int64_t hi_;
+  uint64_t lo_;
+#else  // byte order
+#error "Unsupported byte order: must be little-endian or big-endian."
+#endif  // byte order
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+};
+
+std::ostream& operator<<(std::ostream& os, int128 v);
+
+// TODO(absl-team) add operator>>(std::istream&, int128)
+
+constexpr int128 Int128Max() {
+  return int128((std::numeric_limits<int64_t>::max)(),
+                (std::numeric_limits<uint64_t>::max)());
+}
+
+constexpr int128 Int128Min() {
+  return int128((std::numeric_limits<int64_t>::min)(), 0);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// Specialized numeric_limits for int128.
+namespace std {
+template <>
+class numeric_limits<absl::int128> {
+ public:
+  static constexpr bool is_specialized = true;
+  static constexpr bool is_signed = true;
+  static constexpr bool is_integer = true;
+  static constexpr bool is_exact = true;
+  static constexpr bool has_infinity = false;
+  static constexpr bool has_quiet_NaN = false;
+  static constexpr bool has_signaling_NaN = false;
+  static constexpr float_denorm_style has_denorm = denorm_absent;
+  static constexpr bool has_denorm_loss = false;
+  static constexpr float_round_style round_style = round_toward_zero;
+  static constexpr bool is_iec559 = false;
+  static constexpr bool is_bounded = true;
+  static constexpr bool is_modulo = false;
+  static constexpr int digits = 127;
+  static constexpr int digits10 = 38;
+  static constexpr int max_digits10 = 0;
+  static constexpr int radix = 2;
+  static constexpr int min_exponent = 0;
+  static constexpr int min_exponent10 = 0;
+  static constexpr int max_exponent = 0;
+  static constexpr int max_exponent10 = 0;
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool traps = numeric_limits<__int128>::traps;
+#else   // ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool traps = numeric_limits<uint64_t>::traps;
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+  static constexpr bool tinyness_before = false;
+
+  static constexpr absl::int128 (min)() { return absl::Int128Min(); }
+  static constexpr absl::int128 lowest() { return absl::Int128Min(); }
+  static constexpr absl::int128 (max)() { return absl::Int128Max(); }
+  static constexpr absl::int128 epsilon() { return 0; }
+  static constexpr absl::int128 round_error() { return 0; }
+  static constexpr absl::int128 infinity() { return 0; }
+  static constexpr absl::int128 quiet_NaN() { return 0; }
+  static constexpr absl::int128 signaling_NaN() { return 0; }
+  static constexpr absl::int128 denorm_min() { return 0; }
+};
+}  // namespace std
+
+// --------------------------------------------------------------------------
+//                      Implementation details follow
+// --------------------------------------------------------------------------
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+constexpr uint128 MakeUint128(uint64_t high, uint64_t low) {
+  return uint128(high, low);
+}
+
+// Assignment from integer types.
+
+inline uint128& uint128::operator=(int v) { return *this = uint128(v); }
+
+inline uint128& uint128::operator=(unsigned int v) {
+  return *this = uint128(v);
+}
+
+inline uint128& uint128::operator=(long v) {  // NOLINT(runtime/int)
+  return *this = uint128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline uint128& uint128::operator=(unsigned long v) {
+  return *this = uint128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline uint128& uint128::operator=(long long v) {
+  return *this = uint128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline uint128& uint128::operator=(unsigned long long v) {
+  return *this = uint128(v);
+}
+
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+inline uint128& uint128::operator=(__int128 v) {
+  return *this = uint128(v);
+}
+
+inline uint128& uint128::operator=(unsigned __int128 v) {
+  return *this = uint128(v);
+}
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+inline uint128& uint128::operator=(int128 v) {
+  return *this = uint128(v);
+}
+
+// Arithmetic operators.
+
+uint128 operator<<(uint128 lhs, int amount);
+uint128 operator>>(uint128 lhs, int amount);
+uint128 operator+(uint128 lhs, uint128 rhs);
+uint128 operator-(uint128 lhs, uint128 rhs);
+uint128 operator*(uint128 lhs, uint128 rhs);
+uint128 operator/(uint128 lhs, uint128 rhs);
+uint128 operator%(uint128 lhs, uint128 rhs);
+
+inline uint128& uint128::operator<<=(int amount) {
+  *this = *this << amount;
+  return *this;
+}
+
+inline uint128& uint128::operator>>=(int amount) {
+  *this = *this >> amount;
+  return *this;
+}
+
+inline uint128& uint128::operator+=(uint128 other) {
+  *this = *this + other;
+  return *this;
+}
+
+inline uint128& uint128::operator-=(uint128 other) {
+  *this = *this - other;
+  return *this;
+}
+
+inline uint128& uint128::operator*=(uint128 other) {
+  *this = *this * other;
+  return *this;
+}
+
+inline uint128& uint128::operator/=(uint128 other) {
+  *this = *this / other;
+  return *this;
+}
+
+inline uint128& uint128::operator%=(uint128 other) {
+  *this = *this % other;
+  return *this;
+}
+
+constexpr uint64_t Uint128Low64(uint128 v) { return v.lo_; }
+
+constexpr uint64_t Uint128High64(uint128 v) { return v.hi_; }
+
+// Constructors from integer types.
+
+#if defined(ABSL_IS_LITTLE_ENDIAN)
+
+constexpr uint128::uint128(uint64_t high, uint64_t low)
+    : lo_{low}, hi_{high} {}
+
+constexpr uint128::uint128(int v)
+    : lo_{static_cast<uint64_t>(v)},
+      hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
+constexpr uint128::uint128(long v)  // NOLINT(runtime/int)
+    : lo_{static_cast<uint64_t>(v)},
+      hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
+constexpr uint128::uint128(long long v)  // NOLINT(runtime/int)
+    : lo_{static_cast<uint64_t>(v)},
+      hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
+
+constexpr uint128::uint128(unsigned int v) : lo_{v}, hi_{0} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::uint128(unsigned long v) : lo_{v}, hi_{0} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::uint128(unsigned long long v) : lo_{v}, hi_{0} {}
+
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+constexpr uint128::uint128(__int128 v)
+    : lo_{static_cast<uint64_t>(v & ~uint64_t{0})},
+      hi_{static_cast<uint64_t>(static_cast<unsigned __int128>(v) >> 64)} {}
+constexpr uint128::uint128(unsigned __int128 v)
+    : lo_{static_cast<uint64_t>(v & ~uint64_t{0})},
+      hi_{static_cast<uint64_t>(v >> 64)} {}
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+constexpr uint128::uint128(int128 v)
+    : lo_{Int128Low64(v)}, hi_{static_cast<uint64_t>(Int128High64(v))} {}
+
+#elif defined(ABSL_IS_BIG_ENDIAN)
+
+constexpr uint128::uint128(uint64_t high, uint64_t low)
+    : hi_{high}, lo_{low} {}
+
+constexpr uint128::uint128(int v)
+    : hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
+      lo_{static_cast<uint64_t>(v)} {}
+constexpr uint128::uint128(long v)  // NOLINT(runtime/int)
+    : hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
+      lo_{static_cast<uint64_t>(v)} {}
+constexpr uint128::uint128(long long v)  // NOLINT(runtime/int)
+    : hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
+      lo_{static_cast<uint64_t>(v)} {}
+
+constexpr uint128::uint128(unsigned int v) : hi_{0}, lo_{v} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::uint128(unsigned long v) : hi_{0}, lo_{v} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::uint128(unsigned long long v) : hi_{0}, lo_{v} {}
+
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+constexpr uint128::uint128(__int128 v)
+    : hi_{static_cast<uint64_t>(static_cast<unsigned __int128>(v) >> 64)},
+      lo_{static_cast<uint64_t>(v & ~uint64_t{0})} {}
+constexpr uint128::uint128(unsigned __int128 v)
+    : hi_{static_cast<uint64_t>(v >> 64)},
+      lo_{static_cast<uint64_t>(v & ~uint64_t{0})} {}
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+constexpr uint128::uint128(int128 v)
+    : hi_{static_cast<uint64_t>(Int128High64(v))}, lo_{Int128Low64(v)} {}
+
+#else  // byte order
+#error "Unsupported byte order: must be little-endian or big-endian."
+#endif  // byte order
+
+// Conversion operators to integer types.
+
+constexpr uint128::operator bool() const { return lo_ || hi_; }
+
+constexpr uint128::operator char() const { return static_cast<char>(lo_); }
+
+constexpr uint128::operator signed char() const {
+  return static_cast<signed char>(lo_);
+}
+
+constexpr uint128::operator unsigned char() const {
+  return static_cast<unsigned char>(lo_);
+}
+
+constexpr uint128::operator char16_t() const {
+  return static_cast<char16_t>(lo_);
+}
+
+constexpr uint128::operator char32_t() const {
+  return static_cast<char32_t>(lo_);
+}
+
+constexpr uint128::operator ABSL_INTERNAL_WCHAR_T() const {
+  return static_cast<ABSL_INTERNAL_WCHAR_T>(lo_);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::operator short() const { return static_cast<short>(lo_); }
+
+constexpr uint128::operator unsigned short() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned short>(lo_);            // NOLINT(runtime/int)
+}
+
+constexpr uint128::operator int() const { return static_cast<int>(lo_); }
+
+constexpr uint128::operator unsigned int() const {
+  return static_cast<unsigned int>(lo_);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+constexpr uint128::operator long() const { return static_cast<long>(lo_); }
+
+constexpr uint128::operator unsigned long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long>(lo_);            // NOLINT(runtime/int)
+}
+
+constexpr uint128::operator long long() const {  // NOLINT(runtime/int)
+  return static_cast<long long>(lo_);            // NOLINT(runtime/int)
+}
+
+constexpr uint128::operator unsigned long long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long long>(lo_);            // NOLINT(runtime/int)
+}
+
+#ifdef ABSL_HAVE_INTRINSIC_INT128
+constexpr uint128::operator __int128() const {
+  return (static_cast<__int128>(hi_) << 64) + lo_;
+}
+
+constexpr uint128::operator unsigned __int128() const {
+  return (static_cast<unsigned __int128>(hi_) << 64) + lo_;
+}
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+// Conversion operators to floating point types.
+
+inline uint128::operator float() const {
+  return static_cast<float>(lo_) + std::ldexp(static_cast<float>(hi_), 64);
+}
+
+inline uint128::operator double() const {
+  return static_cast<double>(lo_) + std::ldexp(static_cast<double>(hi_), 64);
+}
+
+inline uint128::operator long double() const {
+  return static_cast<long double>(lo_) +
+         std::ldexp(static_cast<long double>(hi_), 64);
+}
+
+// Comparison operators.
+
+inline bool operator==(uint128 lhs, uint128 rhs) {
+  return (Uint128Low64(lhs) == Uint128Low64(rhs) &&
+          Uint128High64(lhs) == Uint128High64(rhs));
+}
+
+inline bool operator!=(uint128 lhs, uint128 rhs) {
+  return !(lhs == rhs);
+}
+
+inline bool operator<(uint128 lhs, uint128 rhs) {
+  return (Uint128High64(lhs) == Uint128High64(rhs))
+             ? (Uint128Low64(lhs) < Uint128Low64(rhs))
+             : (Uint128High64(lhs) < Uint128High64(rhs));
+}
+
+inline bool operator>(uint128 lhs, uint128 rhs) {
+  return (Uint128High64(lhs) == Uint128High64(rhs))
+             ? (Uint128Low64(lhs) > Uint128Low64(rhs))
+             : (Uint128High64(lhs) > Uint128High64(rhs));
+}
+
+inline bool operator<=(uint128 lhs, uint128 rhs) {
+  return (Uint128High64(lhs) == Uint128High64(rhs))
+             ? (Uint128Low64(lhs) <= Uint128Low64(rhs))
+             : (Uint128High64(lhs) <= Uint128High64(rhs));
+}
+
+inline bool operator>=(uint128 lhs, uint128 rhs) {
+  return (Uint128High64(lhs) == Uint128High64(rhs))
+             ? (Uint128Low64(lhs) >= Uint128Low64(rhs))
+             : (Uint128High64(lhs) >= Uint128High64(rhs));
+}
+
+// Unary operators.
+
+inline uint128 operator-(uint128 val) {
+  uint64_t hi = ~Uint128High64(val);
+  uint64_t lo = ~Uint128Low64(val) + 1;
+  if (lo == 0) ++hi;  // carry
+  return MakeUint128(hi, lo);
+}
+
+inline bool operator!(uint128 val) {
+  return !Uint128High64(val) && !Uint128Low64(val);
+}
+
+// Logical operators.
+
+inline uint128 operator~(uint128 val) {
+  return MakeUint128(~Uint128High64(val), ~Uint128Low64(val));
+}
+
+inline uint128 operator|(uint128 lhs, uint128 rhs) {
+  return MakeUint128(Uint128High64(lhs) | Uint128High64(rhs),
+                           Uint128Low64(lhs) | Uint128Low64(rhs));
+}
+
+inline uint128 operator&(uint128 lhs, uint128 rhs) {
+  return MakeUint128(Uint128High64(lhs) & Uint128High64(rhs),
+                           Uint128Low64(lhs) & Uint128Low64(rhs));
+}
+
+inline uint128 operator^(uint128 lhs, uint128 rhs) {
+  return MakeUint128(Uint128High64(lhs) ^ Uint128High64(rhs),
+                           Uint128Low64(lhs) ^ Uint128Low64(rhs));
+}
+
+inline uint128& uint128::operator|=(uint128 other) {
+  hi_ |= other.hi_;
+  lo_ |= other.lo_;
+  return *this;
+}
+
+inline uint128& uint128::operator&=(uint128 other) {
+  hi_ &= other.hi_;
+  lo_ &= other.lo_;
+  return *this;
+}
+
+inline uint128& uint128::operator^=(uint128 other) {
+  hi_ ^= other.hi_;
+  lo_ ^= other.lo_;
+  return *this;
+}
+
+// Arithmetic operators.
+
+inline uint128 operator<<(uint128 lhs, int amount) {
+  // uint64_t shifts of >= 64 are undefined, so we will need some
+  // special-casing.
+  if (amount < 64) {
+    if (amount != 0) {
+      return MakeUint128(
+          (Uint128High64(lhs) << amount) | (Uint128Low64(lhs) >> (64 - amount)),
+          Uint128Low64(lhs) << amount);
+    }
+    return lhs;
+  }
+  return MakeUint128(Uint128Low64(lhs) << (amount - 64), 0);
+}
+
+inline uint128 operator>>(uint128 lhs, int amount) {
+  // uint64_t shifts of >= 64 are undefined, so we will need some
+  // special-casing.
+  if (amount < 64) {
+    if (amount != 0) {
+      return MakeUint128(Uint128High64(lhs) >> amount,
+                         (Uint128Low64(lhs) >> amount) |
+                             (Uint128High64(lhs) << (64 - amount)));
+    }
+    return lhs;
+  }
+  return MakeUint128(0, Uint128High64(lhs) >> (amount - 64));
+}
+
+inline uint128 operator+(uint128 lhs, uint128 rhs) {
+  uint128 result = MakeUint128(Uint128High64(lhs) + Uint128High64(rhs),
+                               Uint128Low64(lhs) + Uint128Low64(rhs));
+  if (Uint128Low64(result) < Uint128Low64(lhs)) {  // check for carry
+    return MakeUint128(Uint128High64(result) + 1, Uint128Low64(result));
+  }
+  return result;
+}
+
+inline uint128 operator-(uint128 lhs, uint128 rhs) {
+  uint128 result = MakeUint128(Uint128High64(lhs) - Uint128High64(rhs),
+                               Uint128Low64(lhs) - Uint128Low64(rhs));
+  if (Uint128Low64(lhs) < Uint128Low64(rhs)) {  // check for carry
+    return MakeUint128(Uint128High64(result) - 1, Uint128Low64(result));
+  }
+  return result;
+}
+
+inline uint128 operator*(uint128 lhs, uint128 rhs) {
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+  // TODO(strel) Remove once alignment issues are resolved and unsigned __int128
+  // can be used for uint128 storage.
+  return static_cast<unsigned __int128>(lhs) *
+         static_cast<unsigned __int128>(rhs);
+#elif defined(_MSC_VER) && defined(_M_X64)
+  uint64_t carry;
+  uint64_t low = _umul128(Uint128Low64(lhs), Uint128Low64(rhs), &carry);
+  return MakeUint128(Uint128Low64(lhs) * Uint128High64(rhs) +
+                         Uint128High64(lhs) * Uint128Low64(rhs) + carry,
+                     low);
+#else   // ABSL_HAVE_INTRINSIC128
+  uint64_t a32 = Uint128Low64(lhs) >> 32;
+  uint64_t a00 = Uint128Low64(lhs) & 0xffffffff;
+  uint64_t b32 = Uint128Low64(rhs) >> 32;
+  uint64_t b00 = Uint128Low64(rhs) & 0xffffffff;
+  uint128 result =
+      MakeUint128(Uint128High64(lhs) * Uint128Low64(rhs) +
+                      Uint128Low64(lhs) * Uint128High64(rhs) + a32 * b32,
+                  a00 * b00);
+  result += uint128(a32 * b00) << 32;
+  result += uint128(a00 * b32) << 32;
+  return result;
+#endif  // ABSL_HAVE_INTRINSIC128
+}
+
+// Increment/decrement operators.
+
+inline uint128 uint128::operator++(int) {
+  uint128 tmp(*this);
+  *this += 1;
+  return tmp;
+}
+
+inline uint128 uint128::operator--(int) {
+  uint128 tmp(*this);
+  *this -= 1;
+  return tmp;
+}
+
+inline uint128& uint128::operator++() {
+  *this += 1;
+  return *this;
+}
+
+inline uint128& uint128::operator--() {
+  *this -= 1;
+  return *this;
+}
+
+constexpr int128 MakeInt128(int64_t high, uint64_t low) {
+  return int128(high, low);
+}
+
+// Assignment from integer types.
+inline int128& int128::operator=(int v) {
+  return *this = int128(v);
+}
+
+inline int128& int128::operator=(unsigned int v) {
+  return *this = int128(v);
+}
+
+inline int128& int128::operator=(long v) {  // NOLINT(runtime/int)
+  return *this = int128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline int128& int128::operator=(unsigned long v) {
+  return *this = int128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline int128& int128::operator=(long long v) {
+  return *this = int128(v);
+}
+
+// NOLINTNEXTLINE(runtime/int)
+inline int128& int128::operator=(unsigned long long v) {
+  return *this = int128(v);
+}
+
+// Arithmetic operators.
+
+int128 operator+(int128 lhs, int128 rhs);
+int128 operator-(int128 lhs, int128 rhs);
+int128 operator*(int128 lhs, int128 rhs);
+int128 operator/(int128 lhs, int128 rhs);
+int128 operator%(int128 lhs, int128 rhs);
+int128 operator|(int128 lhs, int128 rhs);
+int128 operator&(int128 lhs, int128 rhs);
+int128 operator^(int128 lhs, int128 rhs);
+int128 operator<<(int128 lhs, int amount);
+int128 operator>>(int128 lhs, int amount);
+
+inline int128& int128::operator+=(int128 other) {
+  *this = *this + other;
+  return *this;
+}
+
+inline int128& int128::operator-=(int128 other) {
+  *this = *this - other;
+  return *this;
+}
+
+inline int128& int128::operator*=(int128 other) {
+  *this = *this * other;
+  return *this;
+}
+
+inline int128& int128::operator/=(int128 other) {
+  *this = *this / other;
+  return *this;
+}
+
+inline int128& int128::operator%=(int128 other) {
+  *this = *this % other;
+  return *this;
+}
+
+inline int128& int128::operator|=(int128 other) {
+  *this = *this | other;
+  return *this;
+}
+
+inline int128& int128::operator&=(int128 other) {
+  *this = *this & other;
+  return *this;
+}
+
+inline int128& int128::operator^=(int128 other) {
+  *this = *this ^ other;
+  return *this;
+}
+
+inline int128& int128::operator<<=(int amount) {
+  *this = *this << amount;
+  return *this;
+}
+
+inline int128& int128::operator>>=(int amount) {
+  *this = *this >> amount;
+  return *this;
+}
+
+namespace int128_internal {
+
+// Casts from unsigned to signed while preserving the underlying binary
+// representation.
+constexpr int64_t BitCastToSigned(uint64_t v) {
+  // Casting an unsigned integer to a signed integer of the same
+  // width is implementation defined behavior if the source value would not fit
+  // in the destination type. We step around it with a roundtrip bitwise not
+  // operation to make sure this function remains constexpr. Clang, GCC, and
+  // MSVC optimize this to a no-op on x86-64.
+  return v & (uint64_t{1} << 63) ? ~static_cast<int64_t>(~v)
+                                 : static_cast<int64_t>(v);
+}
+
+}  // namespace int128_internal
+
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+#include "absl/numeric/int128_have_intrinsic.inc"  // IWYU pragma: export
+#else  // ABSL_HAVE_INTRINSIC_INT128
+#include "absl/numeric/int128_no_intrinsic.inc"  // IWYU pragma: export
+#endif  // ABSL_HAVE_INTRINSIC_INT128
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef ABSL_INTERNAL_WCHAR_T
+
+#endif  // ABSL_NUMERIC_INT128_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/numeric/int128_have_intrinsic.inc b/ChattingApp 000/Pods/abseil/absl/numeric/int128_have_intrinsic.inc
new file mode 100644
index 0000000..d6c76dd
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/numeric/int128_have_intrinsic.inc	
@@ -0,0 +1,302 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file contains :int128 implementation details that depend on internal
+// representation when ABSL_HAVE_INTRINSIC_INT128 is defined. This file is
+// included by int128.h and relies on ABSL_INTERNAL_WCHAR_T being defined.
+
+namespace int128_internal {
+
+// Casts from unsigned to signed while preserving the underlying binary
+// representation.
+constexpr __int128 BitCastToSigned(unsigned __int128 v) {
+  // Casting an unsigned integer to a signed integer of the same
+  // width is implementation defined behavior if the source value would not fit
+  // in the destination type. We step around it with a roundtrip bitwise not
+  // operation to make sure this function remains constexpr. Clang and GCC
+  // optimize this to a no-op on x86-64.
+  return v & (static_cast<unsigned __int128>(1) << 127)
+             ? ~static_cast<__int128>(~v)
+             : static_cast<__int128>(v);
+}
+
+}  // namespace int128_internal
+
+inline int128& int128::operator=(__int128 v) {
+  v_ = v;
+  return *this;
+}
+
+constexpr uint64_t Int128Low64(int128 v) {
+  return static_cast<uint64_t>(v.v_ & ~uint64_t{0});
+}
+
+constexpr int64_t Int128High64(int128 v) {
+  // Initially cast to unsigned to prevent a right shift on a negative value.
+  return int128_internal::BitCastToSigned(
+      static_cast<uint64_t>(static_cast<unsigned __int128>(v.v_) >> 64));
+}
+
+constexpr int128::int128(int64_t high, uint64_t low)
+    // Initially cast to unsigned to prevent a left shift that overflows.
+    : v_(int128_internal::BitCastToSigned(static_cast<unsigned __int128>(high)
+                                           << 64) |
+         low) {}
+
+
+constexpr int128::int128(int v) : v_{v} {}
+
+constexpr int128::int128(long v) : v_{v} {}       // NOLINT(runtime/int)
+
+constexpr int128::int128(long long v) : v_{v} {}  // NOLINT(runtime/int)
+
+constexpr int128::int128(__int128 v) : v_{v} {}
+
+constexpr int128::int128(unsigned int v) : v_{v} {}
+
+constexpr int128::int128(unsigned long v) : v_{v} {}  // NOLINT(runtime/int)
+
+// NOLINTNEXTLINE(runtime/int)
+constexpr int128::int128(unsigned long long v) : v_{v} {}
+
+constexpr int128::int128(unsigned __int128 v) : v_{static_cast<__int128>(v)} {}
+
+inline int128::int128(float v) {
+  v_ = static_cast<__int128>(v);
+}
+
+inline int128::int128(double v) {
+  v_ = static_cast<__int128>(v);
+}
+
+inline int128::int128(long double v) {
+  v_ = static_cast<__int128>(v);
+}
+
+constexpr int128::int128(uint128 v) : v_{static_cast<__int128>(v)} {}
+
+constexpr int128::operator bool() const { return static_cast<bool>(v_); }
+
+constexpr int128::operator char() const { return static_cast<char>(v_); }
+
+constexpr int128::operator signed char() const {
+  return static_cast<signed char>(v_);
+}
+
+constexpr int128::operator unsigned char() const {
+  return static_cast<unsigned char>(v_);
+}
+
+constexpr int128::operator char16_t() const {
+  return static_cast<char16_t>(v_);
+}
+
+constexpr int128::operator char32_t() const {
+  return static_cast<char32_t>(v_);
+}
+
+constexpr int128::operator ABSL_INTERNAL_WCHAR_T() const {
+  return static_cast<ABSL_INTERNAL_WCHAR_T>(v_);
+}
+
+constexpr int128::operator short() const {  // NOLINT(runtime/int)
+  return static_cast<short>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator unsigned short() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned short>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator int() const {
+  return static_cast<int>(v_);
+}
+
+constexpr int128::operator unsigned int() const {
+  return static_cast<unsigned int>(v_);
+}
+
+constexpr int128::operator long() const {  // NOLINT(runtime/int)
+  return static_cast<long>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator unsigned long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator long long() const {  // NOLINT(runtime/int)
+  return static_cast<long long>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator unsigned long long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long long>(v_);            // NOLINT(runtime/int)
+}
+
+constexpr int128::operator __int128() const { return v_; }
+
+constexpr int128::operator unsigned __int128() const {
+  return static_cast<unsigned __int128>(v_);
+}
+
+// Clang on PowerPC sometimes produces incorrect __int128 to floating point
+// conversions. In that case, we do the conversion with a similar implementation
+// to the conversion operators in int128_no_intrinsic.inc.
+#if defined(__clang__) && !defined(__ppc64__)
+inline int128::operator float() const { return static_cast<float>(v_); }
+
+inline int128::operator double () const { return static_cast<double>(v_); }
+
+inline int128::operator long double() const {
+  return static_cast<long double>(v_);
+}
+
+#else  // Clang on PowerPC
+// Forward declaration for conversion operators to floating point types.
+int128 operator-(int128 v);
+bool operator!=(int128 lhs, int128 rhs);
+
+inline int128::operator float() const {
+  // We must convert the absolute value and then negate as needed, because
+  // floating point types are typically sign-magnitude. Otherwise, the
+  // difference between the high and low 64 bits when interpreted as two's
+  // complement overwhelms the precision of the mantissa.
+  //
+  // Also check to make sure we don't negate Int128Min()
+  return v_ < 0 && *this != Int128Min()
+             ? -static_cast<float>(-*this)
+             : static_cast<float>(Int128Low64(*this)) +
+                   std::ldexp(static_cast<float>(Int128High64(*this)), 64);
+}
+
+inline int128::operator double() const {
+  // See comment in int128::operator float() above.
+  return v_ < 0 && *this != Int128Min()
+             ? -static_cast<double>(-*this)
+             : static_cast<double>(Int128Low64(*this)) +
+                   std::ldexp(static_cast<double>(Int128High64(*this)), 64);
+}
+
+inline int128::operator long double() const {
+  // See comment in int128::operator float() above.
+  return v_ < 0 && *this != Int128Min()
+             ? -static_cast<long double>(-*this)
+             : static_cast<long double>(Int128Low64(*this)) +
+                   std::ldexp(static_cast<long double>(Int128High64(*this)),
+                              64);
+}
+#endif  // Clang on PowerPC
+
+// Comparison operators.
+
+inline bool operator==(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) == static_cast<__int128>(rhs);
+}
+
+inline bool operator!=(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) != static_cast<__int128>(rhs);
+}
+
+inline bool operator<(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) < static_cast<__int128>(rhs);
+}
+
+inline bool operator>(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) > static_cast<__int128>(rhs);
+}
+
+inline bool operator<=(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) <= static_cast<__int128>(rhs);
+}
+
+inline bool operator>=(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) >= static_cast<__int128>(rhs);
+}
+
+// Unary operators.
+
+inline int128 operator-(int128 v) {
+  return -static_cast<__int128>(v);
+}
+
+inline bool operator!(int128 v) {
+  return !static_cast<__int128>(v);
+}
+
+inline int128 operator~(int128 val) {
+  return ~static_cast<__int128>(val);
+}
+
+// Arithmetic operators.
+
+inline int128 operator+(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) + static_cast<__int128>(rhs);
+}
+
+inline int128 operator-(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) - static_cast<__int128>(rhs);
+}
+
+inline int128 operator*(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) * static_cast<__int128>(rhs);
+}
+
+inline int128 operator/(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) / static_cast<__int128>(rhs);
+}
+
+inline int128 operator%(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) % static_cast<__int128>(rhs);
+}
+
+inline int128 int128::operator++(int) {
+  int128 tmp(*this);
+  ++v_;
+  return tmp;
+}
+
+inline int128 int128::operator--(int) {
+  int128 tmp(*this);
+  --v_;
+  return tmp;
+}
+
+inline int128& int128::operator++() {
+  ++v_;
+  return *this;
+}
+
+inline int128& int128::operator--() {
+  --v_;
+  return *this;
+}
+
+inline int128 operator|(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) | static_cast<__int128>(rhs);
+}
+
+inline int128 operator&(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) & static_cast<__int128>(rhs);
+}
+
+inline int128 operator^(int128 lhs, int128 rhs) {
+  return static_cast<__int128>(lhs) ^ static_cast<__int128>(rhs);
+}
+
+inline int128 operator<<(int128 lhs, int amount) {
+  return static_cast<__int128>(lhs) << amount;
+}
+
+inline int128 operator>>(int128 lhs, int amount) {
+  return static_cast<__int128>(lhs) >> amount;
+}
diff --git a/ChattingApp 000/Pods/abseil/absl/numeric/int128_no_intrinsic.inc b/ChattingApp 000/Pods/abseil/absl/numeric/int128_no_intrinsic.inc
new file mode 100644
index 0000000..c753771
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/numeric/int128_no_intrinsic.inc	
@@ -0,0 +1,308 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file contains :int128 implementation details that depend on internal
+// representation when ABSL_HAVE_INTRINSIC_INT128 is *not* defined. This file
+// is included by int128.h and relies on ABSL_INTERNAL_WCHAR_T being defined.
+
+constexpr uint64_t Int128Low64(int128 v) { return v.lo_; }
+
+constexpr int64_t Int128High64(int128 v) { return v.hi_; }
+
+#if defined(ABSL_IS_LITTLE_ENDIAN)
+
+constexpr int128::int128(int64_t high, uint64_t low) :
+    lo_(low), hi_(high) {}
+
+constexpr int128::int128(int v)
+    : lo_{static_cast<uint64_t>(v)}, hi_{v < 0 ? ~int64_t{0} : 0} {}
+constexpr int128::int128(long v)  // NOLINT(runtime/int)
+    : lo_{static_cast<uint64_t>(v)}, hi_{v < 0 ? ~int64_t{0} : 0} {}
+constexpr int128::int128(long long v)  // NOLINT(runtime/int)
+    : lo_{static_cast<uint64_t>(v)}, hi_{v < 0 ? ~int64_t{0} : 0} {}
+
+constexpr int128::int128(unsigned int v) : lo_{v}, hi_{0} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr int128::int128(unsigned long v) : lo_{v}, hi_{0} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr int128::int128(unsigned long long v) : lo_{v}, hi_{0} {}
+
+constexpr int128::int128(uint128 v)
+    : lo_{Uint128Low64(v)}, hi_{static_cast<int64_t>(Uint128High64(v))} {}
+
+#elif defined(ABSL_IS_BIG_ENDIAN)
+
+constexpr int128::int128(int64_t high, uint64_t low) :
+    hi_{high}, lo_{low} {}
+
+constexpr int128::int128(int v)
+    : hi_{v < 0 ? ~int64_t{0} : 0}, lo_{static_cast<uint64_t>(v)} {}
+constexpr int128::int128(long v)  // NOLINT(runtime/int)
+    : hi_{v < 0 ? ~int64_t{0} : 0}, lo_{static_cast<uint64_t>(v)} {}
+constexpr int128::int128(long long v)  // NOLINT(runtime/int)
+    : hi_{v < 0 ? ~int64_t{0} : 0}, lo_{static_cast<uint64_t>(v)} {}
+
+constexpr int128::int128(unsigned int v) : hi_{0}, lo_{v} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr int128::int128(unsigned long v) : hi_{0}, lo_{v} {}
+// NOLINTNEXTLINE(runtime/int)
+constexpr int128::int128(unsigned long long v) : hi_{0}, lo_{v} {}
+
+constexpr int128::int128(uint128 v)
+    : hi_{static_cast<int64_t>(Uint128High64(v))}, lo_{Uint128Low64(v)} {}
+
+#else  // byte order
+#error "Unsupported byte order: must be little-endian or big-endian."
+#endif  // byte order
+
+constexpr int128::operator bool() const { return lo_ || hi_; }
+
+constexpr int128::operator char() const {
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<char>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator signed char() const {
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<signed char>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator unsigned char() const {
+  return static_cast<unsigned char>(lo_);
+}
+
+constexpr int128::operator char16_t() const {
+  return static_cast<char16_t>(lo_);
+}
+
+constexpr int128::operator char32_t() const {
+  return static_cast<char32_t>(lo_);
+}
+
+constexpr int128::operator ABSL_INTERNAL_WCHAR_T() const {
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<ABSL_INTERNAL_WCHAR_T>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator short() const {  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<short>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator unsigned short() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned short>(lo_);           // NOLINT(runtime/int)
+}
+
+constexpr int128::operator int() const {
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<int>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator unsigned int() const {
+  return static_cast<unsigned int>(lo_);
+}
+
+constexpr int128::operator long() const {  // NOLINT(runtime/int)
+  // NOLINTNEXTLINE(runtime/int)
+  return static_cast<long>(static_cast<long long>(*this));
+}
+
+constexpr int128::operator unsigned long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long>(lo_);           // NOLINT(runtime/int)
+}
+
+constexpr int128::operator long long() const {  // NOLINT(runtime/int)
+  // We don't bother checking the value of hi_. If *this < 0, lo_'s high bit
+  // must be set in order for the value to fit into a long long. Conversely, if
+  // lo_'s high bit is set, *this must be < 0 for the value to fit.
+  return int128_internal::BitCastToSigned(lo_);
+}
+
+constexpr int128::operator unsigned long long() const {  // NOLINT(runtime/int)
+  return static_cast<unsigned long long>(lo_);           // NOLINT(runtime/int)
+}
+
+// Forward declaration for conversion operators to floating point types.
+int128 operator-(int128 v);
+bool operator!=(int128 lhs, int128 rhs);
+
+inline int128::operator float() const {
+  // We must convert the absolute value and then negate as needed, because
+  // floating point types are typically sign-magnitude. Otherwise, the
+  // difference between the high and low 64 bits when interpreted as two's
+  // complement overwhelms the precision of the mantissa.
+  //
+  // Also check to make sure we don't negate Int128Min()
+  return hi_ < 0 && *this != Int128Min()
+             ? -static_cast<float>(-*this)
+             : static_cast<float>(lo_) +
+                   std::ldexp(static_cast<float>(hi_), 64);
+}
+
+inline int128::operator double() const {
+  // See comment in int128::operator float() above.
+  return hi_ < 0 && *this != Int128Min()
+             ? -static_cast<double>(-*this)
+             : static_cast<double>(lo_) +
+                   std::ldexp(static_cast<double>(hi_), 64);
+}
+
+inline int128::operator long double() const {
+  // See comment in int128::operator float() above.
+  return hi_ < 0 && *this != Int128Min()
+             ? -static_cast<long double>(-*this)
+             : static_cast<long double>(lo_) +
+                   std::ldexp(static_cast<long double>(hi_), 64);
+}
+
+// Comparison operators.
+
+inline bool operator==(int128 lhs, int128 rhs) {
+  return (Int128Low64(lhs) == Int128Low64(rhs) &&
+          Int128High64(lhs) == Int128High64(rhs));
+}
+
+inline bool operator!=(int128 lhs, int128 rhs) {
+  return !(lhs == rhs);
+}
+
+inline bool operator<(int128 lhs, int128 rhs) {
+  return (Int128High64(lhs) == Int128High64(rhs))
+             ? (Int128Low64(lhs) < Int128Low64(rhs))
+             : (Int128High64(lhs) < Int128High64(rhs));
+}
+
+inline bool operator>(int128 lhs, int128 rhs) {
+  return (Int128High64(lhs) == Int128High64(rhs))
+             ? (Int128Low64(lhs) > Int128Low64(rhs))
+             : (Int128High64(lhs) > Int128High64(rhs));
+}
+
+inline bool operator<=(int128 lhs, int128 rhs) {
+  return !(lhs > rhs);
+}
+
+inline bool operator>=(int128 lhs, int128 rhs) {
+  return !(lhs < rhs);
+}
+
+// Unary operators.
+
+inline int128 operator-(int128 v) {
+  int64_t hi = ~Int128High64(v);
+  uint64_t lo = ~Int128Low64(v) + 1;
+  if (lo == 0) ++hi;  // carry
+  return MakeInt128(hi, lo);
+}
+
+inline bool operator!(int128 v) {
+  return !Int128Low64(v) && !Int128High64(v);
+}
+
+inline int128 operator~(int128 val) {
+  return MakeInt128(~Int128High64(val), ~Int128Low64(val));
+}
+
+// Arithmetic operators.
+
+inline int128 operator+(int128 lhs, int128 rhs) {
+  int128 result = MakeInt128(Int128High64(lhs) + Int128High64(rhs),
+                             Int128Low64(lhs) + Int128Low64(rhs));
+  if (Int128Low64(result) < Int128Low64(lhs)) {  // check for carry
+    return MakeInt128(Int128High64(result) + 1, Int128Low64(result));
+  }
+  return result;
+}
+
+inline int128 operator-(int128 lhs, int128 rhs) {
+  int128 result = MakeInt128(Int128High64(lhs) - Int128High64(rhs),
+                             Int128Low64(lhs) - Int128Low64(rhs));
+  if (Int128Low64(lhs) < Int128Low64(rhs)) {  // check for carry
+    return MakeInt128(Int128High64(result) - 1, Int128Low64(result));
+  }
+  return result;
+}
+
+inline int128 operator*(int128 lhs, int128 rhs) {
+  uint128 result = uint128(lhs) * rhs;
+  return MakeInt128(int128_internal::BitCastToSigned(Uint128High64(result)),
+                    Uint128Low64(result));
+}
+
+inline int128 int128::operator++(int) {
+  int128 tmp(*this);
+  *this += 1;
+  return tmp;
+}
+
+inline int128 int128::operator--(int) {
+  int128 tmp(*this);
+  *this -= 1;
+  return tmp;
+}
+
+inline int128& int128::operator++() {
+  *this += 1;
+  return *this;
+}
+
+inline int128& int128::operator--() {
+  *this -= 1;
+  return *this;
+}
+
+inline int128 operator|(int128 lhs, int128 rhs) {
+  return MakeInt128(Int128High64(lhs) | Int128High64(rhs),
+                    Int128Low64(lhs) | Int128Low64(rhs));
+}
+
+inline int128 operator&(int128 lhs, int128 rhs) {
+  return MakeInt128(Int128High64(lhs) & Int128High64(rhs),
+                    Int128Low64(lhs) & Int128Low64(rhs));
+}
+
+inline int128 operator^(int128 lhs, int128 rhs) {
+  return MakeInt128(Int128High64(lhs) ^ Int128High64(rhs),
+                    Int128Low64(lhs) ^ Int128Low64(rhs));
+}
+
+inline int128 operator<<(int128 lhs, int amount) {
+  // uint64_t shifts of >= 64 are undefined, so we need some special-casing.
+  if (amount < 64) {
+    if (amount != 0) {
+      return MakeInt128(
+          (Int128High64(lhs) << amount) |
+              static_cast<int64_t>(Int128Low64(lhs) >> (64 - amount)),
+          Int128Low64(lhs) << amount);
+    }
+    return lhs;
+  }
+  return MakeInt128(static_cast<int64_t>(Int128Low64(lhs) << (amount - 64)), 0);
+}
+
+inline int128 operator>>(int128 lhs, int amount) {
+  // uint64_t shifts of >= 64 are undefined, so we need some special-casing.
+  if (amount < 64) {
+    if (amount != 0) {
+      return MakeInt128(
+          Int128High64(lhs) >> amount,
+          (Int128Low64(lhs) >> amount) |
+              (static_cast<uint64_t>(Int128High64(lhs)) << (64 - amount)));
+    }
+    return lhs;
+  }
+  return MakeInt128(0,
+                    static_cast<uint64_t>(Int128High64(lhs) >> (amount - 64)));
+}
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/ascii.cc b/ChattingApp 000/Pods/abseil/absl/strings/ascii.cc
new file mode 100644
index 0000000..93bb03e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/ascii.cc	
@@ -0,0 +1,200 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/ascii.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace ascii_internal {
+
+// # Table generated by this Python code (bit 0x02 is currently unused):
+// TODO(mbar) Move Python code for generation of table to BUILD and link here.
+
+// NOTE: The kAsciiPropertyBits table used within this code was generated by
+// Python code of the following form. (Bit 0x02 is currently unused and
+// available.)
+//
+// def Hex2(n):
+//   return '0x' + hex(n/16)[2:] + hex(n%16)[2:]
+// def IsPunct(ch):
+//   return (ord(ch) >= 32 and ord(ch) < 127 and
+//           not ch.isspace() and not ch.isalnum())
+// def IsBlank(ch):
+//   return ch in ' \t'
+// def IsCntrl(ch):
+//   return ord(ch) < 32 or ord(ch) == 127
+// def IsXDigit(ch):
+//   return ch.isdigit() or ch.lower() in 'abcdef'
+// for i in range(128):
+//   ch = chr(i)
+//   mask = ((ch.isalpha() and 0x01 or 0) |
+//           (ch.isalnum() and 0x04 or 0) |
+//           (ch.isspace() and 0x08 or 0) |
+//           (IsPunct(ch) and 0x10 or 0) |
+//           (IsBlank(ch) and 0x20 or 0) |
+//           (IsCntrl(ch) and 0x40 or 0) |
+//           (IsXDigit(ch) and 0x80 or 0))
+//   print Hex2(mask) + ',',
+//   if i % 16 == 7:
+//     print ' //', Hex2(i & 0x78)
+//   elif i % 16 == 15:
+//     print
+
+// clang-format off
+// Array of bitfields holding character information. Each bit value corresponds
+// to a particular character feature. For readability, and because the value
+// of these bits is tightly coupled to this implementation, the individual bits
+// are not named. Note that bitfields for all characters above ASCII 127 are
+// zero-initialized.
+ABSL_DLL const unsigned char kPropertyBits[256] = {
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x00
+    0x40, 0x68, 0x48, 0x48, 0x48, 0x48, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x10
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x28, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,  // 0x20
+    0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+    0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84,  // 0x30
+    0x84, 0x84, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+    0x10, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x05,  // 0x40
+    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
+    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,  // 0x50
+    0x05, 0x05, 0x05, 0x10, 0x10, 0x10, 0x10, 0x10,
+    0x10, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x05,  // 0x60
+    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
+    0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,  // 0x70
+    0x05, 0x05, 0x05, 0x10, 0x10, 0x10, 0x10, 0x40,
+};
+
+// Array of characters for the ascii_tolower() function. For values 'A'
+// through 'Z', return the lower-case character; otherwise, return the
+// identity of the passed character.
+ABSL_DLL const char kToLower[256] = {
+  '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
+  '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
+  '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
+  '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
+  '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
+  '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
+  '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
+  '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
+  '\x40',    'a',    'b',    'c',    'd',    'e',    'f',    'g',
+     'h',    'i',    'j',    'k',    'l',    'm',    'n',    'o',
+     'p',    'q',    'r',    's',    't',    'u',    'v',    'w',
+     'x',    'y',    'z', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
+  '\x60', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67',
+  '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f',
+  '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77',
+  '\x78', '\x79', '\x7a', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f',
+  '\x80', '\x81', '\x82', '\x83', '\x84', '\x85', '\x86', '\x87',
+  '\x88', '\x89', '\x8a', '\x8b', '\x8c', '\x8d', '\x8e', '\x8f',
+  '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97',
+  '\x98', '\x99', '\x9a', '\x9b', '\x9c', '\x9d', '\x9e', '\x9f',
+  '\xa0', '\xa1', '\xa2', '\xa3', '\xa4', '\xa5', '\xa6', '\xa7',
+  '\xa8', '\xa9', '\xaa', '\xab', '\xac', '\xad', '\xae', '\xaf',
+  '\xb0', '\xb1', '\xb2', '\xb3', '\xb4', '\xb5', '\xb6', '\xb7',
+  '\xb8', '\xb9', '\xba', '\xbb', '\xbc', '\xbd', '\xbe', '\xbf',
+  '\xc0', '\xc1', '\xc2', '\xc3', '\xc4', '\xc5', '\xc6', '\xc7',
+  '\xc8', '\xc9', '\xca', '\xcb', '\xcc', '\xcd', '\xce', '\xcf',
+  '\xd0', '\xd1', '\xd2', '\xd3', '\xd4', '\xd5', '\xd6', '\xd7',
+  '\xd8', '\xd9', '\xda', '\xdb', '\xdc', '\xdd', '\xde', '\xdf',
+  '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7',
+  '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef',
+  '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf7',
+  '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff',
+};
+
+// Array of characters for the ascii_toupper() function. For values 'a'
+// through 'z', return the upper-case character; otherwise, return the
+// identity of the passed character.
+ABSL_DLL const char kToUpper[256] = {
+  '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
+  '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
+  '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
+  '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
+  '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
+  '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
+  '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
+  '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
+  '\x40', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47',
+  '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f',
+  '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57',
+  '\x58', '\x59', '\x5a', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
+  '\x60',    'A',    'B',    'C',    'D',    'E',    'F',    'G',
+     'H',    'I',    'J',    'K',    'L',    'M',    'N',    'O',
+     'P',    'Q',    'R',    'S',    'T',    'U',    'V',    'W',
+     'X',    'Y',    'Z', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f',
+  '\x80', '\x81', '\x82', '\x83', '\x84', '\x85', '\x86', '\x87',
+  '\x88', '\x89', '\x8a', '\x8b', '\x8c', '\x8d', '\x8e', '\x8f',
+  '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97',
+  '\x98', '\x99', '\x9a', '\x9b', '\x9c', '\x9d', '\x9e', '\x9f',
+  '\xa0', '\xa1', '\xa2', '\xa3', '\xa4', '\xa5', '\xa6', '\xa7',
+  '\xa8', '\xa9', '\xaa', '\xab', '\xac', '\xad', '\xae', '\xaf',
+  '\xb0', '\xb1', '\xb2', '\xb3', '\xb4', '\xb5', '\xb6', '\xb7',
+  '\xb8', '\xb9', '\xba', '\xbb', '\xbc', '\xbd', '\xbe', '\xbf',
+  '\xc0', '\xc1', '\xc2', '\xc3', '\xc4', '\xc5', '\xc6', '\xc7',
+  '\xc8', '\xc9', '\xca', '\xcb', '\xcc', '\xcd', '\xce', '\xcf',
+  '\xd0', '\xd1', '\xd2', '\xd3', '\xd4', '\xd5', '\xd6', '\xd7',
+  '\xd8', '\xd9', '\xda', '\xdb', '\xdc', '\xdd', '\xde', '\xdf',
+  '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7',
+  '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef',
+  '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf7',
+  '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff',
+};
+// clang-format on
+
+}  // namespace ascii_internal
+
+void AsciiStrToLower(std::string* s) {
+  for (auto& ch : *s) {
+    ch = absl::ascii_tolower(ch);
+  }
+}
+
+void AsciiStrToUpper(std::string* s) {
+  for (auto& ch : *s) {
+    ch = absl::ascii_toupper(ch);
+  }
+}
+
+void RemoveExtraAsciiWhitespace(std::string* str) {
+  auto stripped = StripAsciiWhitespace(*str);
+
+  if (stripped.empty()) {
+    str->clear();
+    return;
+  }
+
+  auto input_it = stripped.begin();
+  auto input_end = stripped.end();
+  auto output_it = &(*str)[0];
+  bool is_ws = false;
+
+  for (; input_it < input_end; ++input_it) {
+    if (is_ws) {
+      // Consecutive whitespace?  Keep only the last.
+      is_ws = absl::ascii_isspace(*input_it);
+      if (is_ws) --output_it;
+    } else {
+      is_ws = absl::ascii_isspace(*input_it);
+    }
+
+    *output_it = *input_it;
+    ++output_it;
+  }
+
+  str->erase(output_it - &(*str)[0]);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/ascii.h b/ChattingApp 000/Pods/abseil/absl/strings/ascii.h
new file mode 100644
index 0000000..b46bc71
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/ascii.h	
@@ -0,0 +1,242 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: ascii.h
+// -----------------------------------------------------------------------------
+//
+// This package contains functions operating on characters and strings
+// restricted to standard ASCII. These include character classification
+// functions analogous to those found in the ANSI C Standard Library <ctype.h>
+// header file.
+//
+// C++ implementations provide <ctype.h> functionality based on their
+// C environment locale. In general, reliance on such a locale is not ideal, as
+// the locale standard is problematic (and may not return invariant information
+// for the same character set, for example). These `ascii_*()` functions are
+// hard-wired for standard ASCII, much faster, and guaranteed to behave
+// consistently.  They will never be overloaded, nor will their function
+// signature change.
+//
+// `ascii_isalnum()`, `ascii_isalpha()`, `ascii_isascii()`, `ascii_isblank()`,
+// `ascii_iscntrl()`, `ascii_isdigit()`, `ascii_isgraph()`, `ascii_islower()`,
+// `ascii_isprint()`, `ascii_ispunct()`, `ascii_isspace()`, `ascii_isupper()`,
+// `ascii_isxdigit()`
+//   Analogous to the <ctype.h> functions with similar names, these
+//   functions take an unsigned char and return a bool, based on whether the
+//   character matches the condition specified.
+//
+//   If the input character has a numerical value greater than 127, these
+//   functions return `false`.
+//
+// `ascii_tolower()`, `ascii_toupper()`
+//   Analogous to the <ctype.h> functions with similar names, these functions
+//   take an unsigned char and return a char.
+//
+//   If the input character is not an ASCII {lower,upper}-case letter (including
+//   numerical values greater than 127) then the functions return the same value
+//   as the input character.
+
+#ifndef ABSL_STRINGS_ASCII_H_
+#define ABSL_STRINGS_ASCII_H_
+
+#include <algorithm>
+#include <string>
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace ascii_internal {
+
+// Declaration for an array of bitfields holding character information.
+ABSL_DLL extern const unsigned char kPropertyBits[256];
+
+// Declaration for the array of characters to upper-case characters.
+ABSL_DLL extern const char kToUpper[256];
+
+// Declaration for the array of characters to lower-case characters.
+ABSL_DLL extern const char kToLower[256];
+
+}  // namespace ascii_internal
+
+// ascii_isalpha()
+//
+// Determines whether the given character is an alphabetic character.
+inline bool ascii_isalpha(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x01) != 0;
+}
+
+// ascii_isalnum()
+//
+// Determines whether the given character is an alphanumeric character.
+inline bool ascii_isalnum(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x04) != 0;
+}
+
+// ascii_isspace()
+//
+// Determines whether the given character is a whitespace character (space,
+// tab, vertical tab, formfeed, linefeed, or carriage return).
+inline bool ascii_isspace(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x08) != 0;
+}
+
+// ascii_ispunct()
+//
+// Determines whether the given character is a punctuation character.
+inline bool ascii_ispunct(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x10) != 0;
+}
+
+// ascii_isblank()
+//
+// Determines whether the given character is a blank character (tab or space).
+inline bool ascii_isblank(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x20) != 0;
+}
+
+// ascii_iscntrl()
+//
+// Determines whether the given character is a control character.
+inline bool ascii_iscntrl(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x40) != 0;
+}
+
+// ascii_isxdigit()
+//
+// Determines whether the given character can be represented as a hexadecimal
+// digit character (i.e. {0-9} or {A-F}).
+inline bool ascii_isxdigit(unsigned char c) {
+  return (ascii_internal::kPropertyBits[c] & 0x80) != 0;
+}
+
+// ascii_isdigit()
+//
+// Determines whether the given character can be represented as a decimal
+// digit character (i.e. {0-9}).
+inline bool ascii_isdigit(unsigned char c) { return c >= '0' && c <= '9'; }
+
+// ascii_isprint()
+//
+// Determines whether the given character is printable, including whitespace.
+inline bool ascii_isprint(unsigned char c) { return c >= 32 && c < 127; }
+
+// ascii_isgraph()
+//
+// Determines whether the given character has a graphical representation.
+inline bool ascii_isgraph(unsigned char c) { return c > 32 && c < 127; }
+
+// ascii_isupper()
+//
+// Determines whether the given character is uppercase.
+inline bool ascii_isupper(unsigned char c) { return c >= 'A' && c <= 'Z'; }
+
+// ascii_islower()
+//
+// Determines whether the given character is lowercase.
+inline bool ascii_islower(unsigned char c) { return c >= 'a' && c <= 'z'; }
+
+// ascii_isascii()
+//
+// Determines whether the given character is ASCII.
+inline bool ascii_isascii(unsigned char c) { return c < 128; }
+
+// ascii_tolower()
+//
+// Returns an ASCII character, converting to lowercase if uppercase is
+// passed. Note that character values > 127 are simply returned.
+inline char ascii_tolower(unsigned char c) {
+  return ascii_internal::kToLower[c];
+}
+
+// Converts the characters in `s` to lowercase, changing the contents of `s`.
+void AsciiStrToLower(std::string* s);
+
+// Creates a lowercase string from a given absl::string_view.
+ABSL_MUST_USE_RESULT inline std::string AsciiStrToLower(absl::string_view s) {
+  std::string result(s);
+  absl::AsciiStrToLower(&result);
+  return result;
+}
+
+// ascii_toupper()
+//
+// Returns the ASCII character, converting to upper-case if lower-case is
+// passed. Note that characters values > 127 are simply returned.
+inline char ascii_toupper(unsigned char c) {
+  return ascii_internal::kToUpper[c];
+}
+
+// Converts the characters in `s` to uppercase, changing the contents of `s`.
+void AsciiStrToUpper(std::string* s);
+
+// Creates an uppercase string from a given absl::string_view.
+ABSL_MUST_USE_RESULT inline std::string AsciiStrToUpper(absl::string_view s) {
+  std::string result(s);
+  absl::AsciiStrToUpper(&result);
+  return result;
+}
+
+// Returns absl::string_view with whitespace stripped from the beginning of the
+// given string_view.
+ABSL_MUST_USE_RESULT inline absl::string_view StripLeadingAsciiWhitespace(
+    absl::string_view str) {
+  auto it = std::find_if_not(str.begin(), str.end(), absl::ascii_isspace);
+  return str.substr(it - str.begin());
+}
+
+// Strips in place whitespace from the beginning of the given string.
+inline void StripLeadingAsciiWhitespace(std::string* str) {
+  auto it = std::find_if_not(str->begin(), str->end(), absl::ascii_isspace);
+  str->erase(str->begin(), it);
+}
+
+// Returns absl::string_view with whitespace stripped from the end of the given
+// string_view.
+ABSL_MUST_USE_RESULT inline absl::string_view StripTrailingAsciiWhitespace(
+    absl::string_view str) {
+  auto it = std::find_if_not(str.rbegin(), str.rend(), absl::ascii_isspace);
+  return str.substr(0, str.rend() - it);
+}
+
+// Strips in place whitespace from the end of the given string
+inline void StripTrailingAsciiWhitespace(std::string* str) {
+  auto it = std::find_if_not(str->rbegin(), str->rend(), absl::ascii_isspace);
+  str->erase(str->rend() - it);
+}
+
+// Returns absl::string_view with whitespace stripped from both ends of the
+// given string_view.
+ABSL_MUST_USE_RESULT inline absl::string_view StripAsciiWhitespace(
+    absl::string_view str) {
+  return StripTrailingAsciiWhitespace(StripLeadingAsciiWhitespace(str));
+}
+
+// Strips in place whitespace from both ends of the given string
+inline void StripAsciiWhitespace(std::string* str) {
+  StripTrailingAsciiWhitespace(str);
+  StripLeadingAsciiWhitespace(str);
+}
+
+// Removes leading, trailing, and consecutive internal whitespace.
+void RemoveExtraAsciiWhitespace(std::string*);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_ASCII_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/charconv.cc b/ChattingApp 000/Pods/abseil/absl/strings/charconv.cc
new file mode 100644
index 0000000..bdba768
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/charconv.cc	
@@ -0,0 +1,984 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/charconv.h"
+
+#include <algorithm>
+#include <cassert>
+#include <cmath>
+#include <cstring>
+
+#include "absl/base/casts.h"
+#include "absl/base/internal/bits.h"
+#include "absl/numeric/int128.h"
+#include "absl/strings/internal/charconv_bigint.h"
+#include "absl/strings/internal/charconv_parse.h"
+
+// The macro ABSL_BIT_PACK_FLOATS is defined on x86-64, where IEEE floating
+// point numbers have the same endianness in memory as a bitfield struct
+// containing the corresponding parts.
+//
+// When set, we replace calls to ldexp() with manual bit packing, which is
+// faster and is unaffected by floating point environment.
+#ifdef ABSL_BIT_PACK_FLOATS
+#error ABSL_BIT_PACK_FLOATS cannot be directly set
+#elif defined(__x86_64__) || defined(_M_X64)
+#define ABSL_BIT_PACK_FLOATS 1
+#endif
+
+// A note about subnormals:
+//
+// The code below talks about "normals" and "subnormals".  A normal IEEE float
+// has a fixed-width mantissa and power of two exponent.  For example, a normal
+// `double` has a 53-bit mantissa.  Because the high bit is always 1, it is not
+// stored in the representation.  The implicit bit buys an extra bit of
+// resolution in the datatype.
+//
+// The downside of this scheme is that there is a large gap between DBL_MIN and
+// zero.  (Large, at least, relative to the different between DBL_MIN and the
+// next representable number).  This gap is softened by the "subnormal" numbers,
+// which have the same power-of-two exponent as DBL_MIN, but no implicit 53rd
+// bit.  An all-bits-zero exponent in the encoding represents subnormals.  (Zero
+// is represented as a subnormal with an all-bits-zero mantissa.)
+//
+// The code below, in calculations, represents the mantissa as a uint64_t.  The
+// end result normally has the 53rd bit set.  It represents subnormals by using
+// narrower mantissas.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+template <typename FloatType>
+struct FloatTraits;
+
+template <>
+struct FloatTraits<double> {
+  // The number of mantissa bits in the given float type.  This includes the
+  // implied high bit.
+  static constexpr int kTargetMantissaBits = 53;
+
+  // The largest supported IEEE exponent, in our integral mantissa
+  // representation.
+  //
+  // If `m` is the largest possible int kTargetMantissaBits bits wide, then
+  // m * 2**kMaxExponent is exactly equal to DBL_MAX.
+  static constexpr int kMaxExponent = 971;
+
+  // The smallest supported IEEE normal exponent, in our integral mantissa
+  // representation.
+  //
+  // If `m` is the smallest possible int kTargetMantissaBits bits wide, then
+  // m * 2**kMinNormalExponent is exactly equal to DBL_MIN.
+  static constexpr int kMinNormalExponent = -1074;
+
+  static double MakeNan(const char* tagp) {
+    // Support nan no matter which namespace it's in.  Some platforms
+    // incorrectly don't put it in namespace std.
+    using namespace std;  // NOLINT
+    return nan(tagp);
+  }
+
+  // Builds a nonzero floating point number out of the provided parts.
+  //
+  // This is intended to do the same operation as ldexp(mantissa, exponent),
+  // but using purely integer math, to avoid -ffastmath and floating
+  // point environment issues.  Using type punning is also faster. We fall back
+  // to ldexp on a per-platform basis for portability.
+  //
+  // `exponent` must be between kMinNormalExponent and kMaxExponent.
+  //
+  // `mantissa` must either be exactly kTargetMantissaBits wide, in which case
+  // a normal value is made, or it must be less narrow than that, in which case
+  // `exponent` must be exactly kMinNormalExponent, and a subnormal value is
+  // made.
+  static double Make(uint64_t mantissa, int exponent, bool sign) {
+#ifndef ABSL_BIT_PACK_FLOATS
+    // Support ldexp no matter which namespace it's in.  Some platforms
+    // incorrectly don't put it in namespace std.
+    using namespace std;  // NOLINT
+    return sign ? -ldexp(mantissa, exponent) : ldexp(mantissa, exponent);
+#else
+    constexpr uint64_t kMantissaMask =
+        (uint64_t(1) << (kTargetMantissaBits - 1)) - 1;
+    uint64_t dbl = static_cast<uint64_t>(sign) << 63;
+    if (mantissa > kMantissaMask) {
+      // Normal value.
+      // Adjust by 1023 for the exponent representation bias, and an additional
+      // 52 due to the implied decimal point in the IEEE mantissa represenation.
+      dbl += uint64_t{exponent + 1023u + kTargetMantissaBits - 1} << 52;
+      mantissa &= kMantissaMask;
+    } else {
+      // subnormal value
+      assert(exponent == kMinNormalExponent);
+    }
+    dbl += mantissa;
+    return absl::bit_cast<double>(dbl);
+#endif  // ABSL_BIT_PACK_FLOATS
+  }
+};
+
+// Specialization of floating point traits for the `float` type.  See the
+// FloatTraits<double> specialization above for meaning of each of the following
+// members and methods.
+template <>
+struct FloatTraits<float> {
+  static constexpr int kTargetMantissaBits = 24;
+  static constexpr int kMaxExponent = 104;
+  static constexpr int kMinNormalExponent = -149;
+  static float MakeNan(const char* tagp) {
+    // Support nanf no matter which namespace it's in.  Some platforms
+    // incorrectly don't put it in namespace std.
+    using namespace std;  // NOLINT
+    return nanf(tagp);
+  }
+  static float Make(uint32_t mantissa, int exponent, bool sign) {
+#ifndef ABSL_BIT_PACK_FLOATS
+    // Support ldexpf no matter which namespace it's in.  Some platforms
+    // incorrectly don't put it in namespace std.
+    using namespace std;  // NOLINT
+    return sign ? -ldexpf(mantissa, exponent) : ldexpf(mantissa, exponent);
+#else
+    constexpr uint32_t kMantissaMask =
+        (uint32_t(1) << (kTargetMantissaBits - 1)) - 1;
+    uint32_t flt = static_cast<uint32_t>(sign) << 31;
+    if (mantissa > kMantissaMask) {
+      // Normal value.
+      // Adjust by 127 for the exponent representation bias, and an additional
+      // 23 due to the implied decimal point in the IEEE mantissa represenation.
+      flt += uint32_t{exponent + 127u + kTargetMantissaBits - 1} << 23;
+      mantissa &= kMantissaMask;
+    } else {
+      // subnormal value
+      assert(exponent == kMinNormalExponent);
+    }
+    flt += mantissa;
+    return absl::bit_cast<float>(flt);
+#endif  // ABSL_BIT_PACK_FLOATS
+  }
+};
+
+// Decimal-to-binary conversions require coercing powers of 10 into a mantissa
+// and a power of 2.  The two helper functions Power10Mantissa(n) and
+// Power10Exponent(n) perform this task.  Together, these represent a hand-
+// rolled floating point value which is equal to or just less than 10**n.
+//
+// The return values satisfy two range guarantees:
+//
+//   Power10Mantissa(n) * 2**Power10Exponent(n) <= 10**n
+//     < (Power10Mantissa(n) + 1) * 2**Power10Exponent(n)
+//
+//   2**63 <= Power10Mantissa(n) < 2**64.
+//
+// Lookups into the power-of-10 table must first check the Power10Overflow() and
+// Power10Underflow() functions, to avoid out-of-bounds table access.
+//
+// Indexes into these tables are biased by -kPower10TableMin, and the table has
+// values in the range [kPower10TableMin, kPower10TableMax].
+extern const uint64_t kPower10MantissaTable[];
+extern const int16_t kPower10ExponentTable[];
+
+// The smallest allowed value for use with the Power10Mantissa() and
+// Power10Exponent() functions below.  (If a smaller exponent is needed in
+// calculations, the end result is guaranteed to underflow.)
+constexpr int kPower10TableMin = -342;
+
+// The largest allowed value for use with the Power10Mantissa() and
+// Power10Exponent() functions below.  (If a smaller exponent is needed in
+// calculations, the end result is guaranteed to overflow.)
+constexpr int kPower10TableMax = 308;
+
+uint64_t Power10Mantissa(int n) {
+  return kPower10MantissaTable[n - kPower10TableMin];
+}
+
+int Power10Exponent(int n) {
+  return kPower10ExponentTable[n - kPower10TableMin];
+}
+
+// Returns true if n is large enough that 10**n always results in an IEEE
+// overflow.
+bool Power10Overflow(int n) { return n > kPower10TableMax; }
+
+// Returns true if n is small enough that 10**n times a ParsedFloat mantissa
+// always results in an IEEE underflow.
+bool Power10Underflow(int n) { return n < kPower10TableMin; }
+
+// Returns true if Power10Mantissa(n) * 2**Power10Exponent(n) is exactly equal
+// to 10**n numerically.  Put another way, this returns true if there is no
+// truncation error in Power10Mantissa(n).
+bool Power10Exact(int n) { return n >= 0 && n <= 27; }
+
+// Sentinel exponent values for representing numbers too large or too close to
+// zero to represent in a double.
+constexpr int kOverflow = 99999;
+constexpr int kUnderflow = -99999;
+
+// Struct representing the calculated conversion result of a positive (nonzero)
+// floating point number.
+//
+// The calculated number is mantissa * 2**exponent (mantissa is treated as an
+// integer.)  `mantissa` is chosen to be the correct width for the IEEE float
+// representation being calculated.  (`mantissa` will always have the same bit
+// width for normal values, and narrower bit widths for subnormals.)
+//
+// If the result of conversion was an underflow or overflow, exponent is set
+// to kUnderflow or kOverflow.
+struct CalculatedFloat {
+  uint64_t mantissa = 0;
+  int exponent = 0;
+};
+
+// Returns the bit width of the given uint128.  (Equivalently, returns 128
+// minus the number of leading zero bits.)
+int BitWidth(uint128 value) {
+  if (Uint128High64(value) == 0) {
+    return 64 - base_internal::CountLeadingZeros64(Uint128Low64(value));
+  }
+  return 128 - base_internal::CountLeadingZeros64(Uint128High64(value));
+}
+
+// Calculates how far to the right a mantissa needs to be shifted to create a
+// properly adjusted mantissa for an IEEE floating point number.
+//
+// `mantissa_width` is the bit width of the mantissa to be shifted, and
+// `binary_exponent` is the exponent of the number before the shift.
+//
+// This accounts for subnormal values, and will return a larger-than-normal
+// shift if binary_exponent would otherwise be too low.
+template <typename FloatType>
+int NormalizedShiftSize(int mantissa_width, int binary_exponent) {
+  const int normal_shift =
+      mantissa_width - FloatTraits<FloatType>::kTargetMantissaBits;
+  const int minimum_shift =
+      FloatTraits<FloatType>::kMinNormalExponent - binary_exponent;
+  return std::max(normal_shift, minimum_shift);
+}
+
+// Right shifts a uint128 so that it has the requested bit width.  (The
+// resulting value will have 128 - bit_width leading zeroes.)  The initial
+// `value` must be wider than the requested bit width.
+//
+// Returns the number of bits shifted.
+int TruncateToBitWidth(int bit_width, uint128* value) {
+  const int current_bit_width = BitWidth(*value);
+  const int shift = current_bit_width - bit_width;
+  *value >>= shift;
+  return shift;
+}
+
+// Checks if the given ParsedFloat represents one of the edge cases that are
+// not dependent on number base: zero, infinity, or NaN.  If so, sets *value
+// the appropriate double, and returns true.
+template <typename FloatType>
+bool HandleEdgeCase(const strings_internal::ParsedFloat& input, bool negative,
+                    FloatType* value) {
+  if (input.type == strings_internal::FloatType::kNan) {
+    // A bug in both clang and gcc would cause the compiler to optimize away the
+    // buffer we are building below.  Declaring the buffer volatile avoids the
+    // issue, and has no measurable performance impact in microbenchmarks.
+    //
+    // https://bugs.llvm.org/show_bug.cgi?id=37778
+    // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86113
+    constexpr ptrdiff_t kNanBufferSize = 128;
+    volatile char n_char_sequence[kNanBufferSize];
+    if (input.subrange_begin == nullptr) {
+      n_char_sequence[0] = '\0';
+    } else {
+      ptrdiff_t nan_size = input.subrange_end - input.subrange_begin;
+      nan_size = std::min(nan_size, kNanBufferSize - 1);
+      std::copy_n(input.subrange_begin, nan_size, n_char_sequence);
+      n_char_sequence[nan_size] = '\0';
+    }
+    char* nan_argument = const_cast<char*>(n_char_sequence);
+    *value = negative ? -FloatTraits<FloatType>::MakeNan(nan_argument)
+                      : FloatTraits<FloatType>::MakeNan(nan_argument);
+    return true;
+  }
+  if (input.type == strings_internal::FloatType::kInfinity) {
+    *value = negative ? -std::numeric_limits<FloatType>::infinity()
+                      : std::numeric_limits<FloatType>::infinity();
+    return true;
+  }
+  if (input.mantissa == 0) {
+    *value = negative ? -0.0 : 0.0;
+    return true;
+  }
+  return false;
+}
+
+// Given a CalculatedFloat result of a from_chars conversion, generate the
+// correct output values.
+//
+// CalculatedFloat can represent an underflow or overflow, in which case the
+// error code in *result is set.  Otherwise, the calculated floating point
+// number is stored in *value.
+template <typename FloatType>
+void EncodeResult(const CalculatedFloat& calculated, bool negative,
+                  absl::from_chars_result* result, FloatType* value) {
+  if (calculated.exponent == kOverflow) {
+    result->ec = std::errc::result_out_of_range;
+    *value = negative ? -std::numeric_limits<FloatType>::max()
+                      : std::numeric_limits<FloatType>::max();
+    return;
+  } else if (calculated.mantissa == 0 || calculated.exponent == kUnderflow) {
+    result->ec = std::errc::result_out_of_range;
+    *value = negative ? -0.0 : 0.0;
+    return;
+  }
+  *value = FloatTraits<FloatType>::Make(calculated.mantissa,
+                                        calculated.exponent, negative);
+}
+
+// Returns the given uint128 shifted to the right by `shift` bits, and rounds
+// the remaining bits using round_to_nearest logic.  The value is returned as a
+// uint64_t, since this is the type used by this library for storing calculated
+// floating point mantissas.
+//
+// It is expected that the width of the input value shifted by `shift` will
+// be the correct bit-width for the target mantissa, which is strictly narrower
+// than a uint64_t.
+//
+// If `input_exact` is false, then a nonzero error epsilon is assumed.  For
+// rounding purposes, the true value being rounded is strictly greater than the
+// input value.  The error may represent a single lost carry bit.
+//
+// When input_exact, shifted bits of the form 1000000... represent a tie, which
+// is broken by rounding to even -- the rounding direction is chosen so the low
+// bit of the returned value is 0.
+//
+// When !input_exact, shifted bits of the form 10000000... represent a value
+// strictly greater than one half (due to the error epsilon), and so ties are
+// always broken by rounding up.
+//
+// When !input_exact, shifted bits of the form 01111111... are uncertain;
+// the true value may or may not be greater than 10000000..., due to the
+// possible lost carry bit.  The correct rounding direction is unknown.  In this
+// case, the result is rounded down, and `output_exact` is set to false.
+//
+// Zero and negative values of `shift` are accepted, in which case the word is
+// shifted left, as necessary.
+uint64_t ShiftRightAndRound(uint128 value, int shift, bool input_exact,
+                            bool* output_exact) {
+  if (shift <= 0) {
+    *output_exact = input_exact;
+    return static_cast<uint64_t>(value << -shift);
+  }
+  if (shift >= 128) {
+    // Exponent is so small that we are shifting away all significant bits.
+    // Answer will not be representable, even as a subnormal, so return a zero
+    // mantissa (which represents underflow).
+    *output_exact = true;
+    return 0;
+  }
+
+  *output_exact = true;
+  const uint128 shift_mask = (uint128(1) << shift) - 1;
+  const uint128 halfway_point = uint128(1) << (shift - 1);
+
+  const uint128 shifted_bits = value & shift_mask;
+  value >>= shift;
+  if (shifted_bits > halfway_point) {
+    // Shifted bits greater than 10000... require rounding up.
+    return static_cast<uint64_t>(value + 1);
+  }
+  if (shifted_bits == halfway_point) {
+    // In exact mode, shifted bits of 10000... mean we're exactly halfway
+    // between two numbers, and we must round to even.  So only round up if
+    // the low bit of `value` is set.
+    //
+    // In inexact mode, the nonzero error means the actual value is greater
+    // than the halfway point and we must alway round up.
+    if ((value & 1) == 1 || !input_exact) {
+      ++value;
+    }
+    return static_cast<uint64_t>(value);
+  }
+  if (!input_exact && shifted_bits == halfway_point - 1) {
+    // Rounding direction is unclear, due to error.
+    *output_exact = false;
+  }
+  // Otherwise, round down.
+  return static_cast<uint64_t>(value);
+}
+
+// Checks if a floating point guess needs to be rounded up, using high precision
+// math.
+//
+// `guess_mantissa` and `guess_exponent` represent a candidate guess for the
+// number represented by `parsed_decimal`.
+//
+// The exact number represented by `parsed_decimal` must lie between the two
+// numbers:
+//   A = `guess_mantissa * 2**guess_exponent`
+//   B = `(guess_mantissa + 1) * 2**guess_exponent`
+//
+// This function returns false if `A` is the better guess, and true if `B` is
+// the better guess, with rounding ties broken by rounding to even.
+bool MustRoundUp(uint64_t guess_mantissa, int guess_exponent,
+                 const strings_internal::ParsedFloat& parsed_decimal) {
+  // 768 is the number of digits needed in the worst case.  We could determine a
+  // better limit dynamically based on the value of parsed_decimal.exponent.
+  // This would optimize pathological input cases only.  (Sane inputs won't have
+  // hundreds of digits of mantissa.)
+  absl::strings_internal::BigUnsigned<84> exact_mantissa;
+  int exact_exponent = exact_mantissa.ReadFloatMantissa(parsed_decimal, 768);
+
+  // Adjust the `guess` arguments to be halfway between A and B.
+  guess_mantissa = guess_mantissa * 2 + 1;
+  guess_exponent -= 1;
+
+  // In our comparison:
+  // lhs = exact = exact_mantissa * 10**exact_exponent
+  //             = exact_mantissa * 5**exact_exponent * 2**exact_exponent
+  // rhs = guess = guess_mantissa * 2**guess_exponent
+  //
+  // Because we are doing integer math, we can't directly deal with negative
+  // exponents.  We instead move these to the other side of the inequality.
+  absl::strings_internal::BigUnsigned<84>& lhs = exact_mantissa;
+  int comparison;
+  if (exact_exponent >= 0) {
+    lhs.MultiplyByFiveToTheNth(exact_exponent);
+    absl::strings_internal::BigUnsigned<84> rhs(guess_mantissa);
+    // There are powers of 2 on both sides of the inequality; reduce this to
+    // a single bit-shift.
+    if (exact_exponent > guess_exponent) {
+      lhs.ShiftLeft(exact_exponent - guess_exponent);
+    } else {
+      rhs.ShiftLeft(guess_exponent - exact_exponent);
+    }
+    comparison = Compare(lhs, rhs);
+  } else {
+    // Move the power of 5 to the other side of the equation, giving us:
+    // lhs = exact_mantissa * 2**exact_exponent
+    // rhs = guess_mantissa * 5**(-exact_exponent) * 2**guess_exponent
+    absl::strings_internal::BigUnsigned<84> rhs =
+        absl::strings_internal::BigUnsigned<84>::FiveToTheNth(-exact_exponent);
+    rhs.MultiplyBy(guess_mantissa);
+    if (exact_exponent > guess_exponent) {
+      lhs.ShiftLeft(exact_exponent - guess_exponent);
+    } else {
+      rhs.ShiftLeft(guess_exponent - exact_exponent);
+    }
+    comparison = Compare(lhs, rhs);
+  }
+  if (comparison < 0) {
+    return false;
+  } else if (comparison > 0) {
+    return true;
+  } else {
+    // When lhs == rhs, the decimal input is exactly between A and B.
+    // Round towards even -- round up only if the low bit of the initial
+    // `guess_mantissa` was a 1.  We shifted guess_mantissa left 1 bit at
+    // the beginning of this function, so test the 2nd bit here.
+    return (guess_mantissa & 2) == 2;
+  }
+}
+
+// Constructs a CalculatedFloat from a given mantissa and exponent, but
+// with the following normalizations applied:
+//
+// If rounding has caused mantissa to increase just past the allowed bit
+// width, shift and adjust exponent.
+//
+// If exponent is too high, sets kOverflow.
+//
+// If mantissa is zero (representing a non-zero value not representable, even
+// as a subnormal), sets kUnderflow.
+template <typename FloatType>
+CalculatedFloat CalculatedFloatFromRawValues(uint64_t mantissa, int exponent) {
+  CalculatedFloat result;
+  if (mantissa == uint64_t(1) << FloatTraits<FloatType>::kTargetMantissaBits) {
+    mantissa >>= 1;
+    exponent += 1;
+  }
+  if (exponent > FloatTraits<FloatType>::kMaxExponent) {
+    result.exponent = kOverflow;
+  } else if (mantissa == 0) {
+    result.exponent = kUnderflow;
+  } else {
+    result.exponent = exponent;
+    result.mantissa = mantissa;
+  }
+  return result;
+}
+
+template <typename FloatType>
+CalculatedFloat CalculateFromParsedHexadecimal(
+    const strings_internal::ParsedFloat& parsed_hex) {
+  uint64_t mantissa = parsed_hex.mantissa;
+  int exponent = parsed_hex.exponent;
+  int mantissa_width = 64 - base_internal::CountLeadingZeros64(mantissa);
+  const int shift = NormalizedShiftSize<FloatType>(mantissa_width, exponent);
+  bool result_exact;
+  exponent += shift;
+  mantissa = ShiftRightAndRound(mantissa, shift,
+                                /* input exact= */ true, &result_exact);
+  // ParseFloat handles rounding in the hexadecimal case, so we don't have to
+  // check `result_exact` here.
+  return CalculatedFloatFromRawValues<FloatType>(mantissa, exponent);
+}
+
+template <typename FloatType>
+CalculatedFloat CalculateFromParsedDecimal(
+    const strings_internal::ParsedFloat& parsed_decimal) {
+  CalculatedFloat result;
+
+  // Large or small enough decimal exponents will always result in overflow
+  // or underflow.
+  if (Power10Underflow(parsed_decimal.exponent)) {
+    result.exponent = kUnderflow;
+    return result;
+  } else if (Power10Overflow(parsed_decimal.exponent)) {
+    result.exponent = kOverflow;
+    return result;
+  }
+
+  // Otherwise convert our power of 10 into a power of 2 times an integer
+  // mantissa, and multiply this by our parsed decimal mantissa.
+  uint128 wide_binary_mantissa = parsed_decimal.mantissa;
+  wide_binary_mantissa *= Power10Mantissa(parsed_decimal.exponent);
+  int binary_exponent = Power10Exponent(parsed_decimal.exponent);
+
+  // Discard bits that are inaccurate due to truncation error.  The magic
+  // `mantissa_width` constants below are justified in
+  // https://abseil.io/about/design/charconv. They represent the number of bits
+  // in `wide_binary_mantissa` that are guaranteed to be unaffected by error
+  // propagation.
+  bool mantissa_exact;
+  int mantissa_width;
+  if (parsed_decimal.subrange_begin) {
+    // Truncated mantissa
+    mantissa_width = 58;
+    mantissa_exact = false;
+    binary_exponent +=
+        TruncateToBitWidth(mantissa_width, &wide_binary_mantissa);
+  } else if (!Power10Exact(parsed_decimal.exponent)) {
+    // Exact mantissa, truncated power of ten
+    mantissa_width = 63;
+    mantissa_exact = false;
+    binary_exponent +=
+        TruncateToBitWidth(mantissa_width, &wide_binary_mantissa);
+  } else {
+    // Product is exact
+    mantissa_width = BitWidth(wide_binary_mantissa);
+    mantissa_exact = true;
+  }
+
+  // Shift into an FloatType-sized mantissa, and round to nearest.
+  const int shift =
+      NormalizedShiftSize<FloatType>(mantissa_width, binary_exponent);
+  bool result_exact;
+  binary_exponent += shift;
+  uint64_t binary_mantissa = ShiftRightAndRound(wide_binary_mantissa, shift,
+                                                mantissa_exact, &result_exact);
+  if (!result_exact) {
+    // We could not determine the rounding direction using int128 math.  Use
+    // full resolution math instead.
+    if (MustRoundUp(binary_mantissa, binary_exponent, parsed_decimal)) {
+      binary_mantissa += 1;
+    }
+  }
+
+  return CalculatedFloatFromRawValues<FloatType>(binary_mantissa,
+                                                 binary_exponent);
+}
+
+template <typename FloatType>
+from_chars_result FromCharsImpl(const char* first, const char* last,
+                                FloatType& value, chars_format fmt_flags) {
+  from_chars_result result;
+  result.ptr = first;  // overwritten on successful parse
+  result.ec = std::errc();
+
+  bool negative = false;
+  if (first != last && *first == '-') {
+    ++first;
+    negative = true;
+  }
+  // If the `hex` flag is *not* set, then we will accept a 0x prefix and try
+  // to parse a hexadecimal float.
+  if ((fmt_flags & chars_format::hex) == chars_format{} && last - first >= 2 &&
+      *first == '0' && (first[1] == 'x' || first[1] == 'X')) {
+    const char* hex_first = first + 2;
+    strings_internal::ParsedFloat hex_parse =
+        strings_internal::ParseFloat<16>(hex_first, last, fmt_flags);
+    if (hex_parse.end == nullptr ||
+        hex_parse.type != strings_internal::FloatType::kNumber) {
+      // Either we failed to parse a hex float after the "0x", or we read
+      // "0xinf" or "0xnan" which we don't want to match.
+      //
+      // However, a std::string that begins with "0x" also begins with "0", which
+      // is normally a valid match for the number zero.  So we want these
+      // strings to match zero unless fmt_flags is `scientific`.  (This flag
+      // means an exponent is required, which the std::string "0" does not have.)
+      if (fmt_flags == chars_format::scientific) {
+        result.ec = std::errc::invalid_argument;
+      } else {
+        result.ptr = first + 1;
+        value = negative ? -0.0 : 0.0;
+      }
+      return result;
+    }
+    // We matched a value.
+    result.ptr = hex_parse.end;
+    if (HandleEdgeCase(hex_parse, negative, &value)) {
+      return result;
+    }
+    CalculatedFloat calculated =
+        CalculateFromParsedHexadecimal<FloatType>(hex_parse);
+    EncodeResult(calculated, negative, &result, &value);
+    return result;
+  }
+  // Otherwise, we choose the number base based on the flags.
+  if ((fmt_flags & chars_format::hex) == chars_format::hex) {
+    strings_internal::ParsedFloat hex_parse =
+        strings_internal::ParseFloat<16>(first, last, fmt_flags);
+    if (hex_parse.end == nullptr) {
+      result.ec = std::errc::invalid_argument;
+      return result;
+    }
+    result.ptr = hex_parse.end;
+    if (HandleEdgeCase(hex_parse, negative, &value)) {
+      return result;
+    }
+    CalculatedFloat calculated =
+        CalculateFromParsedHexadecimal<FloatType>(hex_parse);
+    EncodeResult(calculated, negative, &result, &value);
+    return result;
+  } else {
+    strings_internal::ParsedFloat decimal_parse =
+        strings_internal::ParseFloat<10>(first, last, fmt_flags);
+    if (decimal_parse.end == nullptr) {
+      result.ec = std::errc::invalid_argument;
+      return result;
+    }
+    result.ptr = decimal_parse.end;
+    if (HandleEdgeCase(decimal_parse, negative, &value)) {
+      return result;
+    }
+    CalculatedFloat calculated =
+        CalculateFromParsedDecimal<FloatType>(decimal_parse);
+    EncodeResult(calculated, negative, &result, &value);
+    return result;
+  }
+}
+}  // namespace
+
+from_chars_result from_chars(const char* first, const char* last, double& value,
+                             chars_format fmt) {
+  return FromCharsImpl(first, last, value, fmt);
+}
+
+from_chars_result from_chars(const char* first, const char* last, float& value,
+                             chars_format fmt) {
+  return FromCharsImpl(first, last, value, fmt);
+}
+
+namespace {
+
+// Table of powers of 10, from kPower10TableMin to kPower10TableMax.
+//
+// kPower10MantissaTable[i - kPower10TableMin] stores the 64-bit mantissa (high
+// bit always on), and kPower10ExponentTable[i - kPower10TableMin] stores the
+// power-of-two exponent.  For a given number i, this gives the unique mantissa
+// and exponent such that mantissa * 2**exponent <= 10**i < (mantissa + 1) *
+// 2**exponent.
+
+const uint64_t kPower10MantissaTable[] = {
+    0xeef453d6923bd65aU, 0x9558b4661b6565f8U, 0xbaaee17fa23ebf76U,
+    0xe95a99df8ace6f53U, 0x91d8a02bb6c10594U, 0xb64ec836a47146f9U,
+    0xe3e27a444d8d98b7U, 0x8e6d8c6ab0787f72U, 0xb208ef855c969f4fU,
+    0xde8b2b66b3bc4723U, 0x8b16fb203055ac76U, 0xaddcb9e83c6b1793U,
+    0xd953e8624b85dd78U, 0x87d4713d6f33aa6bU, 0xa9c98d8ccb009506U,
+    0xd43bf0effdc0ba48U, 0x84a57695fe98746dU, 0xa5ced43b7e3e9188U,
+    0xcf42894a5dce35eaU, 0x818995ce7aa0e1b2U, 0xa1ebfb4219491a1fU,
+    0xca66fa129f9b60a6U, 0xfd00b897478238d0U, 0x9e20735e8cb16382U,
+    0xc5a890362fddbc62U, 0xf712b443bbd52b7bU, 0x9a6bb0aa55653b2dU,
+    0xc1069cd4eabe89f8U, 0xf148440a256e2c76U, 0x96cd2a865764dbcaU,
+    0xbc807527ed3e12bcU, 0xeba09271e88d976bU, 0x93445b8731587ea3U,
+    0xb8157268fdae9e4cU, 0xe61acf033d1a45dfU, 0x8fd0c16206306babU,
+    0xb3c4f1ba87bc8696U, 0xe0b62e2929aba83cU, 0x8c71dcd9ba0b4925U,
+    0xaf8e5410288e1b6fU, 0xdb71e91432b1a24aU, 0x892731ac9faf056eU,
+    0xab70fe17c79ac6caU, 0xd64d3d9db981787dU, 0x85f0468293f0eb4eU,
+    0xa76c582338ed2621U, 0xd1476e2c07286faaU, 0x82cca4db847945caU,
+    0xa37fce126597973cU, 0xcc5fc196fefd7d0cU, 0xff77b1fcbebcdc4fU,
+    0x9faacf3df73609b1U, 0xc795830d75038c1dU, 0xf97ae3d0d2446f25U,
+    0x9becce62836ac577U, 0xc2e801fb244576d5U, 0xf3a20279ed56d48aU,
+    0x9845418c345644d6U, 0xbe5691ef416bd60cU, 0xedec366b11c6cb8fU,
+    0x94b3a202eb1c3f39U, 0xb9e08a83a5e34f07U, 0xe858ad248f5c22c9U,
+    0x91376c36d99995beU, 0xb58547448ffffb2dU, 0xe2e69915b3fff9f9U,
+    0x8dd01fad907ffc3bU, 0xb1442798f49ffb4aU, 0xdd95317f31c7fa1dU,
+    0x8a7d3eef7f1cfc52U, 0xad1c8eab5ee43b66U, 0xd863b256369d4a40U,
+    0x873e4f75e2224e68U, 0xa90de3535aaae202U, 0xd3515c2831559a83U,
+    0x8412d9991ed58091U, 0xa5178fff668ae0b6U, 0xce5d73ff402d98e3U,
+    0x80fa687f881c7f8eU, 0xa139029f6a239f72U, 0xc987434744ac874eU,
+    0xfbe9141915d7a922U, 0x9d71ac8fada6c9b5U, 0xc4ce17b399107c22U,
+    0xf6019da07f549b2bU, 0x99c102844f94e0fbU, 0xc0314325637a1939U,
+    0xf03d93eebc589f88U, 0x96267c7535b763b5U, 0xbbb01b9283253ca2U,
+    0xea9c227723ee8bcbU, 0x92a1958a7675175fU, 0xb749faed14125d36U,
+    0xe51c79a85916f484U, 0x8f31cc0937ae58d2U, 0xb2fe3f0b8599ef07U,
+    0xdfbdcece67006ac9U, 0x8bd6a141006042bdU, 0xaecc49914078536dU,
+    0xda7f5bf590966848U, 0x888f99797a5e012dU, 0xaab37fd7d8f58178U,
+    0xd5605fcdcf32e1d6U, 0x855c3be0a17fcd26U, 0xa6b34ad8c9dfc06fU,
+    0xd0601d8efc57b08bU, 0x823c12795db6ce57U, 0xa2cb1717b52481edU,
+    0xcb7ddcdda26da268U, 0xfe5d54150b090b02U, 0x9efa548d26e5a6e1U,
+    0xc6b8e9b0709f109aU, 0xf867241c8cc6d4c0U, 0x9b407691d7fc44f8U,
+    0xc21094364dfb5636U, 0xf294b943e17a2bc4U, 0x979cf3ca6cec5b5aU,
+    0xbd8430bd08277231U, 0xece53cec4a314ebdU, 0x940f4613ae5ed136U,
+    0xb913179899f68584U, 0xe757dd7ec07426e5U, 0x9096ea6f3848984fU,
+    0xb4bca50b065abe63U, 0xe1ebce4dc7f16dfbU, 0x8d3360f09cf6e4bdU,
+    0xb080392cc4349decU, 0xdca04777f541c567U, 0x89e42caaf9491b60U,
+    0xac5d37d5b79b6239U, 0xd77485cb25823ac7U, 0x86a8d39ef77164bcU,
+    0xa8530886b54dbdebU, 0xd267caa862a12d66U, 0x8380dea93da4bc60U,
+    0xa46116538d0deb78U, 0xcd795be870516656U, 0x806bd9714632dff6U,
+    0xa086cfcd97bf97f3U, 0xc8a883c0fdaf7df0U, 0xfad2a4b13d1b5d6cU,
+    0x9cc3a6eec6311a63U, 0xc3f490aa77bd60fcU, 0xf4f1b4d515acb93bU,
+    0x991711052d8bf3c5U, 0xbf5cd54678eef0b6U, 0xef340a98172aace4U,
+    0x9580869f0e7aac0eU, 0xbae0a846d2195712U, 0xe998d258869facd7U,
+    0x91ff83775423cc06U, 0xb67f6455292cbf08U, 0xe41f3d6a7377eecaU,
+    0x8e938662882af53eU, 0xb23867fb2a35b28dU, 0xdec681f9f4c31f31U,
+    0x8b3c113c38f9f37eU, 0xae0b158b4738705eU, 0xd98ddaee19068c76U,
+    0x87f8a8d4cfa417c9U, 0xa9f6d30a038d1dbcU, 0xd47487cc8470652bU,
+    0x84c8d4dfd2c63f3bU, 0xa5fb0a17c777cf09U, 0xcf79cc9db955c2ccU,
+    0x81ac1fe293d599bfU, 0xa21727db38cb002fU, 0xca9cf1d206fdc03bU,
+    0xfd442e4688bd304aU, 0x9e4a9cec15763e2eU, 0xc5dd44271ad3cdbaU,
+    0xf7549530e188c128U, 0x9a94dd3e8cf578b9U, 0xc13a148e3032d6e7U,
+    0xf18899b1bc3f8ca1U, 0x96f5600f15a7b7e5U, 0xbcb2b812db11a5deU,
+    0xebdf661791d60f56U, 0x936b9fcebb25c995U, 0xb84687c269ef3bfbU,
+    0xe65829b3046b0afaU, 0x8ff71a0fe2c2e6dcU, 0xb3f4e093db73a093U,
+    0xe0f218b8d25088b8U, 0x8c974f7383725573U, 0xafbd2350644eeacfU,
+    0xdbac6c247d62a583U, 0x894bc396ce5da772U, 0xab9eb47c81f5114fU,
+    0xd686619ba27255a2U, 0x8613fd0145877585U, 0xa798fc4196e952e7U,
+    0xd17f3b51fca3a7a0U, 0x82ef85133de648c4U, 0xa3ab66580d5fdaf5U,
+    0xcc963fee10b7d1b3U, 0xffbbcfe994e5c61fU, 0x9fd561f1fd0f9bd3U,
+    0xc7caba6e7c5382c8U, 0xf9bd690a1b68637bU, 0x9c1661a651213e2dU,
+    0xc31bfa0fe5698db8U, 0xf3e2f893dec3f126U, 0x986ddb5c6b3a76b7U,
+    0xbe89523386091465U, 0xee2ba6c0678b597fU, 0x94db483840b717efU,
+    0xba121a4650e4ddebU, 0xe896a0d7e51e1566U, 0x915e2486ef32cd60U,
+    0xb5b5ada8aaff80b8U, 0xe3231912d5bf60e6U, 0x8df5efabc5979c8fU,
+    0xb1736b96b6fd83b3U, 0xddd0467c64bce4a0U, 0x8aa22c0dbef60ee4U,
+    0xad4ab7112eb3929dU, 0xd89d64d57a607744U, 0x87625f056c7c4a8bU,
+    0xa93af6c6c79b5d2dU, 0xd389b47879823479U, 0x843610cb4bf160cbU,
+    0xa54394fe1eedb8feU, 0xce947a3da6a9273eU, 0x811ccc668829b887U,
+    0xa163ff802a3426a8U, 0xc9bcff6034c13052U, 0xfc2c3f3841f17c67U,
+    0x9d9ba7832936edc0U, 0xc5029163f384a931U, 0xf64335bcf065d37dU,
+    0x99ea0196163fa42eU, 0xc06481fb9bcf8d39U, 0xf07da27a82c37088U,
+    0x964e858c91ba2655U, 0xbbe226efb628afeaU, 0xeadab0aba3b2dbe5U,
+    0x92c8ae6b464fc96fU, 0xb77ada0617e3bbcbU, 0xe55990879ddcaabdU,
+    0x8f57fa54c2a9eab6U, 0xb32df8e9f3546564U, 0xdff9772470297ebdU,
+    0x8bfbea76c619ef36U, 0xaefae51477a06b03U, 0xdab99e59958885c4U,
+    0x88b402f7fd75539bU, 0xaae103b5fcd2a881U, 0xd59944a37c0752a2U,
+    0x857fcae62d8493a5U, 0xa6dfbd9fb8e5b88eU, 0xd097ad07a71f26b2U,
+    0x825ecc24c873782fU, 0xa2f67f2dfa90563bU, 0xcbb41ef979346bcaU,
+    0xfea126b7d78186bcU, 0x9f24b832e6b0f436U, 0xc6ede63fa05d3143U,
+    0xf8a95fcf88747d94U, 0x9b69dbe1b548ce7cU, 0xc24452da229b021bU,
+    0xf2d56790ab41c2a2U, 0x97c560ba6b0919a5U, 0xbdb6b8e905cb600fU,
+    0xed246723473e3813U, 0x9436c0760c86e30bU, 0xb94470938fa89bceU,
+    0xe7958cb87392c2c2U, 0x90bd77f3483bb9b9U, 0xb4ecd5f01a4aa828U,
+    0xe2280b6c20dd5232U, 0x8d590723948a535fU, 0xb0af48ec79ace837U,
+    0xdcdb1b2798182244U, 0x8a08f0f8bf0f156bU, 0xac8b2d36eed2dac5U,
+    0xd7adf884aa879177U, 0x86ccbb52ea94baeaU, 0xa87fea27a539e9a5U,
+    0xd29fe4b18e88640eU, 0x83a3eeeef9153e89U, 0xa48ceaaab75a8e2bU,
+    0xcdb02555653131b6U, 0x808e17555f3ebf11U, 0xa0b19d2ab70e6ed6U,
+    0xc8de047564d20a8bU, 0xfb158592be068d2eU, 0x9ced737bb6c4183dU,
+    0xc428d05aa4751e4cU, 0xf53304714d9265dfU, 0x993fe2c6d07b7fabU,
+    0xbf8fdb78849a5f96U, 0xef73d256a5c0f77cU, 0x95a8637627989aadU,
+    0xbb127c53b17ec159U, 0xe9d71b689dde71afU, 0x9226712162ab070dU,
+    0xb6b00d69bb55c8d1U, 0xe45c10c42a2b3b05U, 0x8eb98a7a9a5b04e3U,
+    0xb267ed1940f1c61cU, 0xdf01e85f912e37a3U, 0x8b61313bbabce2c6U,
+    0xae397d8aa96c1b77U, 0xd9c7dced53c72255U, 0x881cea14545c7575U,
+    0xaa242499697392d2U, 0xd4ad2dbfc3d07787U, 0x84ec3c97da624ab4U,
+    0xa6274bbdd0fadd61U, 0xcfb11ead453994baU, 0x81ceb32c4b43fcf4U,
+    0xa2425ff75e14fc31U, 0xcad2f7f5359a3b3eU, 0xfd87b5f28300ca0dU,
+    0x9e74d1b791e07e48U, 0xc612062576589ddaU, 0xf79687aed3eec551U,
+    0x9abe14cd44753b52U, 0xc16d9a0095928a27U, 0xf1c90080baf72cb1U,
+    0x971da05074da7beeU, 0xbce5086492111aeaU, 0xec1e4a7db69561a5U,
+    0x9392ee8e921d5d07U, 0xb877aa3236a4b449U, 0xe69594bec44de15bU,
+    0x901d7cf73ab0acd9U, 0xb424dc35095cd80fU, 0xe12e13424bb40e13U,
+    0x8cbccc096f5088cbU, 0xafebff0bcb24aafeU, 0xdbe6fecebdedd5beU,
+    0x89705f4136b4a597U, 0xabcc77118461cefcU, 0xd6bf94d5e57a42bcU,
+    0x8637bd05af6c69b5U, 0xa7c5ac471b478423U, 0xd1b71758e219652bU,
+    0x83126e978d4fdf3bU, 0xa3d70a3d70a3d70aU, 0xccccccccccccccccU,
+    0x8000000000000000U, 0xa000000000000000U, 0xc800000000000000U,
+    0xfa00000000000000U, 0x9c40000000000000U, 0xc350000000000000U,
+    0xf424000000000000U, 0x9896800000000000U, 0xbebc200000000000U,
+    0xee6b280000000000U, 0x9502f90000000000U, 0xba43b74000000000U,
+    0xe8d4a51000000000U, 0x9184e72a00000000U, 0xb5e620f480000000U,
+    0xe35fa931a0000000U, 0x8e1bc9bf04000000U, 0xb1a2bc2ec5000000U,
+    0xde0b6b3a76400000U, 0x8ac7230489e80000U, 0xad78ebc5ac620000U,
+    0xd8d726b7177a8000U, 0x878678326eac9000U, 0xa968163f0a57b400U,
+    0xd3c21bcecceda100U, 0x84595161401484a0U, 0xa56fa5b99019a5c8U,
+    0xcecb8f27f4200f3aU, 0x813f3978f8940984U, 0xa18f07d736b90be5U,
+    0xc9f2c9cd04674edeU, 0xfc6f7c4045812296U, 0x9dc5ada82b70b59dU,
+    0xc5371912364ce305U, 0xf684df56c3e01bc6U, 0x9a130b963a6c115cU,
+    0xc097ce7bc90715b3U, 0xf0bdc21abb48db20U, 0x96769950b50d88f4U,
+    0xbc143fa4e250eb31U, 0xeb194f8e1ae525fdU, 0x92efd1b8d0cf37beU,
+    0xb7abc627050305adU, 0xe596b7b0c643c719U, 0x8f7e32ce7bea5c6fU,
+    0xb35dbf821ae4f38bU, 0xe0352f62a19e306eU, 0x8c213d9da502de45U,
+    0xaf298d050e4395d6U, 0xdaf3f04651d47b4cU, 0x88d8762bf324cd0fU,
+    0xab0e93b6efee0053U, 0xd5d238a4abe98068U, 0x85a36366eb71f041U,
+    0xa70c3c40a64e6c51U, 0xd0cf4b50cfe20765U, 0x82818f1281ed449fU,
+    0xa321f2d7226895c7U, 0xcbea6f8ceb02bb39U, 0xfee50b7025c36a08U,
+    0x9f4f2726179a2245U, 0xc722f0ef9d80aad6U, 0xf8ebad2b84e0d58bU,
+    0x9b934c3b330c8577U, 0xc2781f49ffcfa6d5U, 0xf316271c7fc3908aU,
+    0x97edd871cfda3a56U, 0xbde94e8e43d0c8ecU, 0xed63a231d4c4fb27U,
+    0x945e455f24fb1cf8U, 0xb975d6b6ee39e436U, 0xe7d34c64a9c85d44U,
+    0x90e40fbeea1d3a4aU, 0xb51d13aea4a488ddU, 0xe264589a4dcdab14U,
+    0x8d7eb76070a08aecU, 0xb0de65388cc8ada8U, 0xdd15fe86affad912U,
+    0x8a2dbf142dfcc7abU, 0xacb92ed9397bf996U, 0xd7e77a8f87daf7fbU,
+    0x86f0ac99b4e8dafdU, 0xa8acd7c0222311bcU, 0xd2d80db02aabd62bU,
+    0x83c7088e1aab65dbU, 0xa4b8cab1a1563f52U, 0xcde6fd5e09abcf26U,
+    0x80b05e5ac60b6178U, 0xa0dc75f1778e39d6U, 0xc913936dd571c84cU,
+    0xfb5878494ace3a5fU, 0x9d174b2dcec0e47bU, 0xc45d1df942711d9aU,
+    0xf5746577930d6500U, 0x9968bf6abbe85f20U, 0xbfc2ef456ae276e8U,
+    0xefb3ab16c59b14a2U, 0x95d04aee3b80ece5U, 0xbb445da9ca61281fU,
+    0xea1575143cf97226U, 0x924d692ca61be758U, 0xb6e0c377cfa2e12eU,
+    0xe498f455c38b997aU, 0x8edf98b59a373fecU, 0xb2977ee300c50fe7U,
+    0xdf3d5e9bc0f653e1U, 0x8b865b215899f46cU, 0xae67f1e9aec07187U,
+    0xda01ee641a708de9U, 0x884134fe908658b2U, 0xaa51823e34a7eedeU,
+    0xd4e5e2cdc1d1ea96U, 0x850fadc09923329eU, 0xa6539930bf6bff45U,
+    0xcfe87f7cef46ff16U, 0x81f14fae158c5f6eU, 0xa26da3999aef7749U,
+    0xcb090c8001ab551cU, 0xfdcb4fa002162a63U, 0x9e9f11c4014dda7eU,
+    0xc646d63501a1511dU, 0xf7d88bc24209a565U, 0x9ae757596946075fU,
+    0xc1a12d2fc3978937U, 0xf209787bb47d6b84U, 0x9745eb4d50ce6332U,
+    0xbd176620a501fbffU, 0xec5d3fa8ce427affU, 0x93ba47c980e98cdfU,
+    0xb8a8d9bbe123f017U, 0xe6d3102ad96cec1dU, 0x9043ea1ac7e41392U,
+    0xb454e4a179dd1877U, 0xe16a1dc9d8545e94U, 0x8ce2529e2734bb1dU,
+    0xb01ae745b101e9e4U, 0xdc21a1171d42645dU, 0x899504ae72497ebaU,
+    0xabfa45da0edbde69U, 0xd6f8d7509292d603U, 0x865b86925b9bc5c2U,
+    0xa7f26836f282b732U, 0xd1ef0244af2364ffU, 0x8335616aed761f1fU,
+    0xa402b9c5a8d3a6e7U, 0xcd036837130890a1U, 0x802221226be55a64U,
+    0xa02aa96b06deb0fdU, 0xc83553c5c8965d3dU, 0xfa42a8b73abbf48cU,
+    0x9c69a97284b578d7U, 0xc38413cf25e2d70dU, 0xf46518c2ef5b8cd1U,
+    0x98bf2f79d5993802U, 0xbeeefb584aff8603U, 0xeeaaba2e5dbf6784U,
+    0x952ab45cfa97a0b2U, 0xba756174393d88dfU, 0xe912b9d1478ceb17U,
+    0x91abb422ccb812eeU, 0xb616a12b7fe617aaU, 0xe39c49765fdf9d94U,
+    0x8e41ade9fbebc27dU, 0xb1d219647ae6b31cU, 0xde469fbd99a05fe3U,
+    0x8aec23d680043beeU, 0xada72ccc20054ae9U, 0xd910f7ff28069da4U,
+    0x87aa9aff79042286U, 0xa99541bf57452b28U, 0xd3fa922f2d1675f2U,
+    0x847c9b5d7c2e09b7U, 0xa59bc234db398c25U, 0xcf02b2c21207ef2eU,
+    0x8161afb94b44f57dU, 0xa1ba1ba79e1632dcU, 0xca28a291859bbf93U,
+    0xfcb2cb35e702af78U, 0x9defbf01b061adabU, 0xc56baec21c7a1916U,
+    0xf6c69a72a3989f5bU, 0x9a3c2087a63f6399U, 0xc0cb28a98fcf3c7fU,
+    0xf0fdf2d3f3c30b9fU, 0x969eb7c47859e743U, 0xbc4665b596706114U,
+    0xeb57ff22fc0c7959U, 0x9316ff75dd87cbd8U, 0xb7dcbf5354e9beceU,
+    0xe5d3ef282a242e81U, 0x8fa475791a569d10U, 0xb38d92d760ec4455U,
+    0xe070f78d3927556aU, 0x8c469ab843b89562U, 0xaf58416654a6babbU,
+    0xdb2e51bfe9d0696aU, 0x88fcf317f22241e2U, 0xab3c2fddeeaad25aU,
+    0xd60b3bd56a5586f1U, 0x85c7056562757456U, 0xa738c6bebb12d16cU,
+    0xd106f86e69d785c7U, 0x82a45b450226b39cU, 0xa34d721642b06084U,
+    0xcc20ce9bd35c78a5U, 0xff290242c83396ceU, 0x9f79a169bd203e41U,
+    0xc75809c42c684dd1U, 0xf92e0c3537826145U, 0x9bbcc7a142b17ccbU,
+    0xc2abf989935ddbfeU, 0xf356f7ebf83552feU, 0x98165af37b2153deU,
+    0xbe1bf1b059e9a8d6U, 0xeda2ee1c7064130cU, 0x9485d4d1c63e8be7U,
+    0xb9a74a0637ce2ee1U, 0xe8111c87c5c1ba99U, 0x910ab1d4db9914a0U,
+    0xb54d5e4a127f59c8U, 0xe2a0b5dc971f303aU, 0x8da471a9de737e24U,
+    0xb10d8e1456105dadU, 0xdd50f1996b947518U, 0x8a5296ffe33cc92fU,
+    0xace73cbfdc0bfb7bU, 0xd8210befd30efa5aU, 0x8714a775e3e95c78U,
+    0xa8d9d1535ce3b396U, 0xd31045a8341ca07cU, 0x83ea2b892091e44dU,
+    0xa4e4b66b68b65d60U, 0xce1de40642e3f4b9U, 0x80d2ae83e9ce78f3U,
+    0xa1075a24e4421730U, 0xc94930ae1d529cfcU, 0xfb9b7cd9a4a7443cU,
+    0x9d412e0806e88aa5U, 0xc491798a08a2ad4eU, 0xf5b5d7ec8acb58a2U,
+    0x9991a6f3d6bf1765U, 0xbff610b0cc6edd3fU, 0xeff394dcff8a948eU,
+    0x95f83d0a1fb69cd9U, 0xbb764c4ca7a4440fU, 0xea53df5fd18d5513U,
+    0x92746b9be2f8552cU, 0xb7118682dbb66a77U, 0xe4d5e82392a40515U,
+    0x8f05b1163ba6832dU, 0xb2c71d5bca9023f8U, 0xdf78e4b2bd342cf6U,
+    0x8bab8eefb6409c1aU, 0xae9672aba3d0c320U, 0xda3c0f568cc4f3e8U,
+    0x8865899617fb1871U, 0xaa7eebfb9df9de8dU, 0xd51ea6fa85785631U,
+    0x8533285c936b35deU, 0xa67ff273b8460356U, 0xd01fef10a657842cU,
+    0x8213f56a67f6b29bU, 0xa298f2c501f45f42U, 0xcb3f2f7642717713U,
+    0xfe0efb53d30dd4d7U, 0x9ec95d1463e8a506U, 0xc67bb4597ce2ce48U,
+    0xf81aa16fdc1b81daU, 0x9b10a4e5e9913128U, 0xc1d4ce1f63f57d72U,
+    0xf24a01a73cf2dccfU, 0x976e41088617ca01U, 0xbd49d14aa79dbc82U,
+    0xec9c459d51852ba2U, 0x93e1ab8252f33b45U, 0xb8da1662e7b00a17U,
+    0xe7109bfba19c0c9dU, 0x906a617d450187e2U, 0xb484f9dc9641e9daU,
+    0xe1a63853bbd26451U, 0x8d07e33455637eb2U, 0xb049dc016abc5e5fU,
+    0xdc5c5301c56b75f7U, 0x89b9b3e11b6329baU, 0xac2820d9623bf429U,
+    0xd732290fbacaf133U, 0x867f59a9d4bed6c0U, 0xa81f301449ee8c70U,
+    0xd226fc195c6a2f8cU, 0x83585d8fd9c25db7U, 0xa42e74f3d032f525U,
+    0xcd3a1230c43fb26fU, 0x80444b5e7aa7cf85U, 0xa0555e361951c366U,
+    0xc86ab5c39fa63440U, 0xfa856334878fc150U, 0x9c935e00d4b9d8d2U,
+    0xc3b8358109e84f07U, 0xf4a642e14c6262c8U, 0x98e7e9cccfbd7dbdU,
+    0xbf21e44003acdd2cU, 0xeeea5d5004981478U, 0x95527a5202df0ccbU,
+    0xbaa718e68396cffdU, 0xe950df20247c83fdU, 0x91d28b7416cdd27eU,
+    0xb6472e511c81471dU, 0xe3d8f9e563a198e5U, 0x8e679c2f5e44ff8fU,
+};
+
+const int16_t kPower10ExponentTable[] = {
+    -1200, -1196, -1193, -1190, -1186, -1183, -1180, -1176, -1173, -1170, -1166,
+    -1163, -1160, -1156, -1153, -1150, -1146, -1143, -1140, -1136, -1133, -1130,
+    -1127, -1123, -1120, -1117, -1113, -1110, -1107, -1103, -1100, -1097, -1093,
+    -1090, -1087, -1083, -1080, -1077, -1073, -1070, -1067, -1063, -1060, -1057,
+    -1053, -1050, -1047, -1043, -1040, -1037, -1034, -1030, -1027, -1024, -1020,
+    -1017, -1014, -1010, -1007, -1004, -1000, -997,  -994,  -990,  -987,  -984,
+    -980,  -977,  -974,  -970,  -967,  -964,  -960,  -957,  -954,  -950,  -947,
+    -944,  -940,  -937,  -934,  -931,  -927,  -924,  -921,  -917,  -914,  -911,
+    -907,  -904,  -901,  -897,  -894,  -891,  -887,  -884,  -881,  -877,  -874,
+    -871,  -867,  -864,  -861,  -857,  -854,  -851,  -847,  -844,  -841,  -838,
+    -834,  -831,  -828,  -824,  -821,  -818,  -814,  -811,  -808,  -804,  -801,
+    -798,  -794,  -791,  -788,  -784,  -781,  -778,  -774,  -771,  -768,  -764,
+    -761,  -758,  -754,  -751,  -748,  -744,  -741,  -738,  -735,  -731,  -728,
+    -725,  -721,  -718,  -715,  -711,  -708,  -705,  -701,  -698,  -695,  -691,
+    -688,  -685,  -681,  -678,  -675,  -671,  -668,  -665,  -661,  -658,  -655,
+    -651,  -648,  -645,  -642,  -638,  -635,  -632,  -628,  -625,  -622,  -618,
+    -615,  -612,  -608,  -605,  -602,  -598,  -595,  -592,  -588,  -585,  -582,
+    -578,  -575,  -572,  -568,  -565,  -562,  -558,  -555,  -552,  -549,  -545,
+    -542,  -539,  -535,  -532,  -529,  -525,  -522,  -519,  -515,  -512,  -509,
+    -505,  -502,  -499,  -495,  -492,  -489,  -485,  -482,  -479,  -475,  -472,
+    -469,  -465,  -462,  -459,  -455,  -452,  -449,  -446,  -442,  -439,  -436,
+    -432,  -429,  -426,  -422,  -419,  -416,  -412,  -409,  -406,  -402,  -399,
+    -396,  -392,  -389,  -386,  -382,  -379,  -376,  -372,  -369,  -366,  -362,
+    -359,  -356,  -353,  -349,  -346,  -343,  -339,  -336,  -333,  -329,  -326,
+    -323,  -319,  -316,  -313,  -309,  -306,  -303,  -299,  -296,  -293,  -289,
+    -286,  -283,  -279,  -276,  -273,  -269,  -266,  -263,  -259,  -256,  -253,
+    -250,  -246,  -243,  -240,  -236,  -233,  -230,  -226,  -223,  -220,  -216,
+    -213,  -210,  -206,  -203,  -200,  -196,  -193,  -190,  -186,  -183,  -180,
+    -176,  -173,  -170,  -166,  -163,  -160,  -157,  -153,  -150,  -147,  -143,
+    -140,  -137,  -133,  -130,  -127,  -123,  -120,  -117,  -113,  -110,  -107,
+    -103,  -100,  -97,   -93,   -90,   -87,   -83,   -80,   -77,   -73,   -70,
+    -67,   -63,   -60,   -57,   -54,   -50,   -47,   -44,   -40,   -37,   -34,
+    -30,   -27,   -24,   -20,   -17,   -14,   -10,   -7,    -4,    0,     3,
+    6,     10,    13,    16,    20,    23,    26,    30,    33,    36,    39,
+    43,    46,    49,    53,    56,    59,    63,    66,    69,    73,    76,
+    79,    83,    86,    89,    93,    96,    99,    103,   106,   109,   113,
+    116,   119,   123,   126,   129,   132,   136,   139,   142,   146,   149,
+    152,   156,   159,   162,   166,   169,   172,   176,   179,   182,   186,
+    189,   192,   196,   199,   202,   206,   209,   212,   216,   219,   222,
+    226,   229,   232,   235,   239,   242,   245,   249,   252,   255,   259,
+    262,   265,   269,   272,   275,   279,   282,   285,   289,   292,   295,
+    299,   302,   305,   309,   312,   315,   319,   322,   325,   328,   332,
+    335,   338,   342,   345,   348,   352,   355,   358,   362,   365,   368,
+    372,   375,   378,   382,   385,   388,   392,   395,   398,   402,   405,
+    408,   412,   415,   418,   422,   425,   428,   431,   435,   438,   441,
+    445,   448,   451,   455,   458,   461,   465,   468,   471,   475,   478,
+    481,   485,   488,   491,   495,   498,   501,   505,   508,   511,   515,
+    518,   521,   524,   528,   531,   534,   538,   541,   544,   548,   551,
+    554,   558,   561,   564,   568,   571,   574,   578,   581,   584,   588,
+    591,   594,   598,   601,   604,   608,   611,   614,   617,   621,   624,
+    627,   631,   634,   637,   641,   644,   647,   651,   654,   657,   661,
+    664,   667,   671,   674,   677,   681,   684,   687,   691,   694,   697,
+    701,   704,   707,   711,   714,   717,   720,   724,   727,   730,   734,
+    737,   740,   744,   747,   750,   754,   757,   760,   764,   767,   770,
+    774,   777,   780,   784,   787,   790,   794,   797,   800,   804,   807,
+    810,   813,   817,   820,   823,   827,   830,   833,   837,   840,   843,
+    847,   850,   853,   857,   860,   863,   867,   870,   873,   877,   880,
+    883,   887,   890,   893,   897,   900,   903,   907,   910,   913,   916,
+    920,   923,   926,   930,   933,   936,   940,   943,   946,   950,   953,
+    956,   960,
+};
+
+}  // namespace
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/charconv.h b/ChattingApp 000/Pods/abseil/absl/strings/charconv.h
new file mode 100644
index 0000000..e04be32
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/charconv.h	
@@ -0,0 +1,119 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_CHARCONV_H_
+#define ABSL_STRINGS_CHARCONV_H_
+
+#include <system_error>  // NOLINT(build/c++11)
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Workalike compatibilty version of std::chars_format from C++17.
+//
+// This is an bitfield enumerator which can be passed to absl::from_chars to
+// configure the string-to-float conversion.
+enum class chars_format {
+  scientific = 1,
+  fixed = 2,
+  hex = 4,
+  general = fixed | scientific,
+};
+
+// The return result of a string-to-number conversion.
+//
+// `ec` will be set to `invalid_argument` if a well-formed number was not found
+// at the start of the input range, `result_out_of_range` if a well-formed
+// number was found, but it was out of the representable range of the requested
+// type, or to std::errc() otherwise.
+//
+// If a well-formed number was found, `ptr` is set to one past the sequence of
+// characters that were successfully parsed.  If none was found, `ptr` is set
+// to the `first` argument to from_chars.
+struct from_chars_result {
+  const char* ptr;
+  std::errc ec;
+};
+
+// Workalike compatibilty version of std::from_chars from C++17.  Currently
+// this only supports the `double` and `float` types.
+//
+// This interface incorporates the proposed resolutions for library issues
+// DR 3080 and DR 3081.  If these are adopted with different wording,
+// Abseil's behavior will change to match the standard.  (The behavior most
+// likely to change is for DR 3081, which says what `value` will be set to in
+// the case of overflow and underflow.  Code that wants to avoid possible
+// breaking changes in this area should not depend on `value` when the returned
+// from_chars_result indicates a range error.)
+//
+// Searches the range [first, last) for the longest matching pattern beginning
+// at `first` that represents a floating point number.  If one is found, store
+// the result in `value`.
+//
+// The matching pattern format is almost the same as that of strtod(), except
+// that C locale is not respected, and an initial '+' character in the input
+// range will never be matched.
+//
+// If `fmt` is set, it must be one of the enumerator values of the chars_format.
+// (This is despite the fact that chars_format is a bitmask type.)  If set to
+// `scientific`, a matching number must contain an exponent.  If set to `fixed`,
+// then an exponent will never match.  (For example, the string "1e5" will be
+// parsed as "1".)  If set to `hex`, then a hexadecimal float is parsed in the
+// format that strtod() accepts, except that a "0x" prefix is NOT matched.
+// (In particular, in `hex` mode, the input "0xff" results in the largest
+// matching pattern "0".)
+absl::from_chars_result from_chars(const char* first, const char* last,
+                                   double& value,  // NOLINT
+                                   chars_format fmt = chars_format::general);
+
+absl::from_chars_result from_chars(const char* first, const char* last,
+                                   float& value,  // NOLINT
+                                   chars_format fmt = chars_format::general);
+
+// std::chars_format is specified as a bitmask type, which means the following
+// operations must be provided:
+inline constexpr chars_format operator&(chars_format lhs, chars_format rhs) {
+  return static_cast<chars_format>(static_cast<int>(lhs) &
+                                   static_cast<int>(rhs));
+}
+inline constexpr chars_format operator|(chars_format lhs, chars_format rhs) {
+  return static_cast<chars_format>(static_cast<int>(lhs) |
+                                   static_cast<int>(rhs));
+}
+inline constexpr chars_format operator^(chars_format lhs, chars_format rhs) {
+  return static_cast<chars_format>(static_cast<int>(lhs) ^
+                                   static_cast<int>(rhs));
+}
+inline constexpr chars_format operator~(chars_format arg) {
+  return static_cast<chars_format>(~static_cast<int>(arg));
+}
+inline chars_format& operator&=(chars_format& lhs, chars_format rhs) {
+  lhs = lhs & rhs;
+  return lhs;
+}
+inline chars_format& operator|=(chars_format& lhs, chars_format rhs) {
+  lhs = lhs | rhs;
+  return lhs;
+}
+inline chars_format& operator^=(chars_format& lhs, chars_format rhs) {
+  lhs = lhs ^ rhs;
+  return lhs;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_CHARCONV_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/escaping.cc b/ChattingApp 000/Pods/abseil/absl/strings/escaping.cc
new file mode 100644
index 0000000..7adc1b6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/escaping.cc	
@@ -0,0 +1,949 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/escaping.h"
+
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <cstring>
+#include <iterator>
+#include <limits>
+#include <string>
+
+#include "absl/base/internal/endian.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/unaligned_access.h"
+#include "absl/strings/internal/char_map.h"
+#include "absl/strings/internal/escaping.h"
+#include "absl/strings/internal/resize_uninitialized.h"
+#include "absl/strings/internal/utf8.h"
+#include "absl/strings/str_cat.h"
+#include "absl/strings/str_join.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+// These are used for the leave_nulls_escaped argument to CUnescapeInternal().
+constexpr bool kUnescapeNulls = false;
+
+inline bool is_octal_digit(char c) { return ('0' <= c) && (c <= '7'); }
+
+inline int hex_digit_to_int(char c) {
+  static_assert('0' == 0x30 && 'A' == 0x41 && 'a' == 0x61,
+                "Character set must be ASCII.");
+  assert(absl::ascii_isxdigit(c));
+  int x = static_cast<unsigned char>(c);
+  if (x > '9') {
+    x += 9;
+  }
+  return x & 0xf;
+}
+
+inline bool IsSurrogate(char32_t c, absl::string_view src, std::string* error) {
+  if (c >= 0xD800 && c <= 0xDFFF) {
+    if (error) {
+      *error = absl::StrCat("invalid surrogate character (0xD800-DFFF): \\",
+                            src);
+    }
+    return true;
+  }
+  return false;
+}
+
+// ----------------------------------------------------------------------
+// CUnescapeInternal()
+//    Implements both CUnescape() and CUnescapeForNullTerminatedString().
+//
+//    Unescapes C escape sequences and is the reverse of CEscape().
+//
+//    If 'source' is valid, stores the unescaped string and its size in
+//    'dest' and 'dest_len' respectively, and returns true. Otherwise
+//    returns false and optionally stores the error description in
+//    'error'. Set 'error' to nullptr to disable error reporting.
+//
+//    'dest' should point to a buffer that is at least as big as 'source'.
+//    'source' and 'dest' may be the same.
+//
+//     NOTE: any changes to this function must also be reflected in the older
+//     UnescapeCEscapeSequences().
+// ----------------------------------------------------------------------
+bool CUnescapeInternal(absl::string_view source, bool leave_nulls_escaped,
+                       char* dest, ptrdiff_t* dest_len, std::string* error) {
+  char* d = dest;
+  const char* p = source.data();
+  const char* end = p + source.size();
+  const char* last_byte = end - 1;
+
+  // Small optimization for case where source = dest and there's no escaping
+  while (p == d && p < end && *p != '\\') p++, d++;
+
+  while (p < end) {
+    if (*p != '\\') {
+      *d++ = *p++;
+    } else {
+      if (++p > last_byte) {  // skip past the '\\'
+        if (error) *error = "String cannot end with \\";
+        return false;
+      }
+      switch (*p) {
+        case 'a':  *d++ = '\a';  break;
+        case 'b':  *d++ = '\b';  break;
+        case 'f':  *d++ = '\f';  break;
+        case 'n':  *d++ = '\n';  break;
+        case 'r':  *d++ = '\r';  break;
+        case 't':  *d++ = '\t';  break;
+        case 'v':  *d++ = '\v';  break;
+        case '\\': *d++ = '\\';  break;
+        case '?':  *d++ = '\?';  break;    // \?  Who knew?
+        case '\'': *d++ = '\'';  break;
+        case '"':  *d++ = '\"';  break;
+        case '0':
+        case '1':
+        case '2':
+        case '3':
+        case '4':
+        case '5':
+        case '6':
+        case '7': {
+          // octal digit: 1 to 3 digits
+          const char* octal_start = p;
+          unsigned int ch = *p - '0';
+          if (p < last_byte && is_octal_digit(p[1])) ch = ch * 8 + *++p - '0';
+          if (p < last_byte && is_octal_digit(p[1]))
+            ch = ch * 8 + *++p - '0';      // now points at last digit
+          if (ch > 0xff) {
+            if (error) {
+              *error = "Value of \\" +
+                       std::string(octal_start, p + 1 - octal_start) +
+                       " exceeds 0xff";
+            }
+            return false;
+          }
+          if ((ch == 0) && leave_nulls_escaped) {
+            // Copy the escape sequence for the null character
+            const ptrdiff_t octal_size = p + 1 - octal_start;
+            *d++ = '\\';
+            memcpy(d, octal_start, octal_size);
+            d += octal_size;
+            break;
+          }
+          *d++ = ch;
+          break;
+        }
+        case 'x':
+        case 'X': {
+          if (p >= last_byte) {
+            if (error) *error = "String cannot end with \\x";
+            return false;
+          } else if (!absl::ascii_isxdigit(p[1])) {
+            if (error) *error = "\\x cannot be followed by a non-hex digit";
+            return false;
+          }
+          unsigned int ch = 0;
+          const char* hex_start = p;
+          while (p < last_byte && absl::ascii_isxdigit(p[1]))
+            // Arbitrarily many hex digits
+            ch = (ch << 4) + hex_digit_to_int(*++p);
+          if (ch > 0xFF) {
+            if (error) {
+              *error = "Value of \\" +
+                       std::string(hex_start, p + 1 - hex_start) +
+                       " exceeds 0xff";
+            }
+            return false;
+          }
+          if ((ch == 0) && leave_nulls_escaped) {
+            // Copy the escape sequence for the null character
+            const ptrdiff_t hex_size = p + 1 - hex_start;
+            *d++ = '\\';
+            memcpy(d, hex_start, hex_size);
+            d += hex_size;
+            break;
+          }
+          *d++ = ch;
+          break;
+        }
+        case 'u': {
+          // \uhhhh => convert 4 hex digits to UTF-8
+          char32_t rune = 0;
+          const char* hex_start = p;
+          if (p + 4 >= end) {
+            if (error) {
+              *error = "\\u must be followed by 4 hex digits: \\" +
+                       std::string(hex_start, p + 1 - hex_start);
+            }
+            return false;
+          }
+          for (int i = 0; i < 4; ++i) {
+            // Look one char ahead.
+            if (absl::ascii_isxdigit(p[1])) {
+              rune = (rune << 4) + hex_digit_to_int(*++p);  // Advance p.
+            } else {
+              if (error) {
+                *error = "\\u must be followed by 4 hex digits: \\" +
+                         std::string(hex_start, p + 1 - hex_start);
+              }
+              return false;
+            }
+          }
+          if ((rune == 0) && leave_nulls_escaped) {
+            // Copy the escape sequence for the null character
+            *d++ = '\\';
+            memcpy(d, hex_start, 5);  // u0000
+            d += 5;
+            break;
+          }
+          if (IsSurrogate(rune, absl::string_view(hex_start, 5), error)) {
+            return false;
+          }
+          d += strings_internal::EncodeUTF8Char(d, rune);
+          break;
+        }
+        case 'U': {
+          // \Uhhhhhhhh => convert 8 hex digits to UTF-8
+          char32_t rune = 0;
+          const char* hex_start = p;
+          if (p + 8 >= end) {
+            if (error) {
+              *error = "\\U must be followed by 8 hex digits: \\" +
+                       std::string(hex_start, p + 1 - hex_start);
+            }
+            return false;
+          }
+          for (int i = 0; i < 8; ++i) {
+            // Look one char ahead.
+            if (absl::ascii_isxdigit(p[1])) {
+              // Don't change rune until we're sure this
+              // is within the Unicode limit, but do advance p.
+              uint32_t newrune = (rune << 4) + hex_digit_to_int(*++p);
+              if (newrune > 0x10FFFF) {
+                if (error) {
+                  *error = "Value of \\" +
+                           std::string(hex_start, p + 1 - hex_start) +
+                           " exceeds Unicode limit (0x10FFFF)";
+                }
+                return false;
+              } else {
+                rune = newrune;
+              }
+            } else {
+              if (error) {
+                *error = "\\U must be followed by 8 hex digits: \\" +
+                         std::string(hex_start, p + 1 - hex_start);
+              }
+              return false;
+            }
+          }
+          if ((rune == 0) && leave_nulls_escaped) {
+            // Copy the escape sequence for the null character
+            *d++ = '\\';
+            memcpy(d, hex_start, 9);  // U00000000
+            d += 9;
+            break;
+          }
+          if (IsSurrogate(rune, absl::string_view(hex_start, 9), error)) {
+            return false;
+          }
+          d += strings_internal::EncodeUTF8Char(d, rune);
+          break;
+        }
+        default: {
+          if (error) *error = std::string("Unknown escape sequence: \\") + *p;
+          return false;
+        }
+      }
+      p++;                                 // read past letter we escaped
+    }
+  }
+  *dest_len = d - dest;
+  return true;
+}
+
+// ----------------------------------------------------------------------
+// CUnescapeInternal()
+//
+//    Same as above but uses a std::string for output. 'source' and 'dest'
+//    may be the same.
+// ----------------------------------------------------------------------
+bool CUnescapeInternal(absl::string_view source, bool leave_nulls_escaped,
+                       std::string* dest, std::string* error) {
+  strings_internal::STLStringResizeUninitialized(dest, source.size());
+
+  ptrdiff_t dest_size;
+  if (!CUnescapeInternal(source,
+                         leave_nulls_escaped,
+                         &(*dest)[0],
+                         &dest_size,
+                         error)) {
+    return false;
+  }
+  dest->erase(dest_size);
+  return true;
+}
+
+// ----------------------------------------------------------------------
+// CEscape()
+// CHexEscape()
+// Utf8SafeCEscape()
+// Utf8SafeCHexEscape()
+//    Escapes 'src' using C-style escape sequences.  This is useful for
+//    preparing query flags.  The 'Hex' version uses hexadecimal rather than
+//    octal sequences.  The 'Utf8Safe' version does not touch UTF-8 bytes.
+//
+//    Escaped chars: \n, \r, \t, ", ', \, and !absl::ascii_isprint().
+// ----------------------------------------------------------------------
+std::string CEscapeInternal(absl::string_view src, bool use_hex,
+                            bool utf8_safe) {
+  std::string dest;
+  bool last_hex_escape = false;  // true if last output char was \xNN.
+
+  for (unsigned char c : src) {
+    bool is_hex_escape = false;
+    switch (c) {
+      case '\n': dest.append("\\" "n"); break;
+      case '\r': dest.append("\\" "r"); break;
+      case '\t': dest.append("\\" "t"); break;
+      case '\"': dest.append("\\" "\""); break;
+      case '\'': dest.append("\\" "'"); break;
+      case '\\': dest.append("\\" "\\"); break;
+      default:
+        // Note that if we emit \xNN and the src character after that is a hex
+        // digit then that digit must be escaped too to prevent it being
+        // interpreted as part of the character code by C.
+        if ((!utf8_safe || c < 0x80) &&
+            (!absl::ascii_isprint(c) ||
+             (last_hex_escape && absl::ascii_isxdigit(c)))) {
+          if (use_hex) {
+            dest.append("\\" "x");
+            dest.push_back(numbers_internal::kHexChar[c / 16]);
+            dest.push_back(numbers_internal::kHexChar[c % 16]);
+            is_hex_escape = true;
+          } else {
+            dest.append("\\");
+            dest.push_back(numbers_internal::kHexChar[c / 64]);
+            dest.push_back(numbers_internal::kHexChar[(c % 64) / 8]);
+            dest.push_back(numbers_internal::kHexChar[c % 8]);
+          }
+        } else {
+          dest.push_back(c);
+          break;
+        }
+    }
+    last_hex_escape = is_hex_escape;
+  }
+
+  return dest;
+}
+
+/* clang-format off */
+constexpr char c_escaped_len[256] = {
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 4, 4, 2, 4, 4,  // \t, \n, \r
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1,  // ", '
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  // '0'..'9'
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  // 'A'..'O'
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1,  // 'P'..'Z', '\'
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  // 'a'..'o'
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4,  // 'p'..'z', DEL
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+};
+/* clang-format on */
+
+// Calculates the length of the C-style escaped version of 'src'.
+// Assumes that non-printable characters are escaped using octal sequences, and
+// that UTF-8 bytes are not handled specially.
+inline size_t CEscapedLength(absl::string_view src) {
+  size_t escaped_len = 0;
+  for (unsigned char c : src) escaped_len += c_escaped_len[c];
+  return escaped_len;
+}
+
+void CEscapeAndAppendInternal(absl::string_view src, std::string* dest) {
+  size_t escaped_len = CEscapedLength(src);
+  if (escaped_len == src.size()) {
+    dest->append(src.data(), src.size());
+    return;
+  }
+
+  size_t cur_dest_len = dest->size();
+  strings_internal::STLStringResizeUninitialized(dest,
+                                                 cur_dest_len + escaped_len);
+  char* append_ptr = &(*dest)[cur_dest_len];
+
+  for (unsigned char c : src) {
+    int char_len = c_escaped_len[c];
+    if (char_len == 1) {
+      *append_ptr++ = c;
+    } else if (char_len == 2) {
+      switch (c) {
+        case '\n':
+          *append_ptr++ = '\\';
+          *append_ptr++ = 'n';
+          break;
+        case '\r':
+          *append_ptr++ = '\\';
+          *append_ptr++ = 'r';
+          break;
+        case '\t':
+          *append_ptr++ = '\\';
+          *append_ptr++ = 't';
+          break;
+        case '\"':
+          *append_ptr++ = '\\';
+          *append_ptr++ = '\"';
+          break;
+        case '\'':
+          *append_ptr++ = '\\';
+          *append_ptr++ = '\'';
+          break;
+        case '\\':
+          *append_ptr++ = '\\';
+          *append_ptr++ = '\\';
+          break;
+      }
+    } else {
+      *append_ptr++ = '\\';
+      *append_ptr++ = '0' + c / 64;
+      *append_ptr++ = '0' + (c % 64) / 8;
+      *append_ptr++ = '0' + c % 8;
+    }
+  }
+}
+
+bool Base64UnescapeInternal(const char* src_param, size_t szsrc, char* dest,
+                            size_t szdest, const signed char* unbase64,
+                            size_t* len) {
+  static const char kPad64Equals = '=';
+  static const char kPad64Dot = '.';
+
+  size_t destidx = 0;
+  int decode = 0;
+  int state = 0;
+  unsigned int ch = 0;
+  unsigned int temp = 0;
+
+  // If "char" is signed by default, using *src as an array index results in
+  // accessing negative array elements. Treat the input as a pointer to
+  // unsigned char to avoid this.
+  const unsigned char* src = reinterpret_cast<const unsigned char*>(src_param);
+
+  // The GET_INPUT macro gets the next input character, skipping
+  // over any whitespace, and stopping when we reach the end of the
+  // std::string or when we read any non-data character.  The arguments are
+  // an arbitrary identifier (used as a label for goto) and the number
+  // of data bytes that must remain in the input to avoid aborting the
+  // loop.
+#define GET_INPUT(label, remain)                                \
+  label:                                                        \
+  --szsrc;                                                      \
+  ch = *src++;                                                  \
+  decode = unbase64[ch];                                        \
+  if (decode < 0) {                                             \
+    if (absl::ascii_isspace(ch) && szsrc >= remain) goto label; \
+    state = 4 - remain;                                         \
+    break;                                                      \
+  }
+
+  // if dest is null, we're just checking to see if it's legal input
+  // rather than producing output.  (I suspect this could just be done
+  // with a regexp...).  We duplicate the loop so this test can be
+  // outside it instead of in every iteration.
+
+  if (dest) {
+    // This loop consumes 4 input bytes and produces 3 output bytes
+    // per iteration.  We can't know at the start that there is enough
+    // data left in the std::string for a full iteration, so the loop may
+    // break out in the middle; if so 'state' will be set to the
+    // number of input bytes read.
+
+    while (szsrc >= 4) {
+      // We'll start by optimistically assuming that the next four
+      // bytes of the std::string (src[0..3]) are four good data bytes
+      // (that is, no nulls, whitespace, padding chars, or illegal
+      // chars).  We need to test src[0..2] for nulls individually
+      // before constructing temp to preserve the property that we
+      // never read past a null in the std::string (no matter how long
+      // szsrc claims the std::string is).
+
+      if (!src[0] || !src[1] || !src[2] ||
+          ((temp = ((unsigned(unbase64[src[0]]) << 18) |
+                    (unsigned(unbase64[src[1]]) << 12) |
+                    (unsigned(unbase64[src[2]]) << 6) |
+                    (unsigned(unbase64[src[3]])))) &
+           0x80000000)) {
+        // Iff any of those four characters was bad (null, illegal,
+        // whitespace, padding), then temp's high bit will be set
+        // (because unbase64[] is -1 for all bad characters).
+        //
+        // We'll back up and resort to the slower decoder, which knows
+        // how to handle those cases.
+
+        GET_INPUT(first, 4);
+        temp = decode;
+        GET_INPUT(second, 3);
+        temp = (temp << 6) | decode;
+        GET_INPUT(third, 2);
+        temp = (temp << 6) | decode;
+        GET_INPUT(fourth, 1);
+        temp = (temp << 6) | decode;
+      } else {
+        // We really did have four good data bytes, so advance four
+        // characters in the std::string.
+
+        szsrc -= 4;
+        src += 4;
+      }
+
+      // temp has 24 bits of input, so write that out as three bytes.
+
+      if (destidx + 3 > szdest) return false;
+      dest[destidx + 2] = temp;
+      temp >>= 8;
+      dest[destidx + 1] = temp;
+      temp >>= 8;
+      dest[destidx] = temp;
+      destidx += 3;
+    }
+  } else {
+    while (szsrc >= 4) {
+      if (!src[0] || !src[1] || !src[2] ||
+          ((temp = ((unsigned(unbase64[src[0]]) << 18) |
+                    (unsigned(unbase64[src[1]]) << 12) |
+                    (unsigned(unbase64[src[2]]) << 6) |
+                    (unsigned(unbase64[src[3]])))) &
+           0x80000000)) {
+        GET_INPUT(first_no_dest, 4);
+        GET_INPUT(second_no_dest, 3);
+        GET_INPUT(third_no_dest, 2);
+        GET_INPUT(fourth_no_dest, 1);
+      } else {
+        szsrc -= 4;
+        src += 4;
+      }
+      destidx += 3;
+    }
+  }
+
+#undef GET_INPUT
+
+  // if the loop terminated because we read a bad character, return
+  // now.
+  if (decode < 0 && ch != kPad64Equals && ch != kPad64Dot &&
+      !absl::ascii_isspace(ch))
+    return false;
+
+  if (ch == kPad64Equals || ch == kPad64Dot) {
+    // if we stopped by hitting an '=' or '.', un-read that character -- we'll
+    // look at it again when we count to check for the proper number of
+    // equals signs at the end.
+    ++szsrc;
+    --src;
+  } else {
+    // This loop consumes 1 input byte per iteration.  It's used to
+    // clean up the 0-3 input bytes remaining when the first, faster
+    // loop finishes.  'temp' contains the data from 'state' input
+    // characters read by the first loop.
+    while (szsrc > 0) {
+      --szsrc;
+      ch = *src++;
+      decode = unbase64[ch];
+      if (decode < 0) {
+        if (absl::ascii_isspace(ch)) {
+          continue;
+        } else if (ch == kPad64Equals || ch == kPad64Dot) {
+          // back up one character; we'll read it again when we check
+          // for the correct number of pad characters at the end.
+          ++szsrc;
+          --src;
+          break;
+        } else {
+          return false;
+        }
+      }
+
+      // Each input character gives us six bits of output.
+      temp = (temp << 6) | decode;
+      ++state;
+      if (state == 4) {
+        // If we've accumulated 24 bits of output, write that out as
+        // three bytes.
+        if (dest) {
+          if (destidx + 3 > szdest) return false;
+          dest[destidx + 2] = temp;
+          temp >>= 8;
+          dest[destidx + 1] = temp;
+          temp >>= 8;
+          dest[destidx] = temp;
+        }
+        destidx += 3;
+        state = 0;
+        temp = 0;
+      }
+    }
+  }
+
+  // Process the leftover data contained in 'temp' at the end of the input.
+  int expected_equals = 0;
+  switch (state) {
+    case 0:
+      // Nothing left over; output is a multiple of 3 bytes.
+      break;
+
+    case 1:
+      // Bad input; we have 6 bits left over.
+      return false;
+
+    case 2:
+      // Produce one more output byte from the 12 input bits we have left.
+      if (dest) {
+        if (destidx + 1 > szdest) return false;
+        temp >>= 4;
+        dest[destidx] = temp;
+      }
+      ++destidx;
+      expected_equals = 2;
+      break;
+
+    case 3:
+      // Produce two more output bytes from the 18 input bits we have left.
+      if (dest) {
+        if (destidx + 2 > szdest) return false;
+        temp >>= 2;
+        dest[destidx + 1] = temp;
+        temp >>= 8;
+        dest[destidx] = temp;
+      }
+      destidx += 2;
+      expected_equals = 1;
+      break;
+
+    default:
+      // state should have no other values at this point.
+      ABSL_RAW_LOG(FATAL, "This can't happen; base64 decoder state = %d",
+                   state);
+  }
+
+  // The remainder of the std::string should be all whitespace, mixed with
+  // exactly 0 equals signs, or exactly 'expected_equals' equals
+  // signs.  (Always accepting 0 equals signs is an Abseil extension
+  // not covered in the RFC, as is accepting dot as the pad character.)
+
+  int equals = 0;
+  while (szsrc > 0) {
+    if (*src == kPad64Equals || *src == kPad64Dot)
+      ++equals;
+    else if (!absl::ascii_isspace(*src))
+      return false;
+    --szsrc;
+    ++src;
+  }
+
+  const bool ok = (equals == 0 || equals == expected_equals);
+  if (ok) *len = destidx;
+  return ok;
+}
+
+// The arrays below were generated by the following code
+// #include <sys/time.h>
+// #include <stdlib.h>
+// #include <string.h>
+// main()
+// {
+//   static const char Base64[] =
+//     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+//   char* pos;
+//   int idx, i, j;
+//   printf("    ");
+//   for (i = 0; i < 255; i += 8) {
+//     for (j = i; j < i + 8; j++) {
+//       pos = strchr(Base64, j);
+//       if ((pos == nullptr) || (j == 0))
+//         idx = -1;
+//       else
+//         idx = pos - Base64;
+//       if (idx == -1)
+//         printf(" %2d,     ", idx);
+//       else
+//         printf(" %2d/*%c*/,", idx, j);
+//     }
+//     printf("\n    ");
+//   }
+// }
+//
+// where the value of "Base64[]" was replaced by one of the base-64 conversion
+// tables from the functions below.
+/* clang-format off */
+constexpr signed char kUnBase64[] = {
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      62/*+*/, -1,      -1,      -1,      63/*/ */,
+    52/*0*/, 53/*1*/, 54/*2*/, 55/*3*/, 56/*4*/, 57/*5*/, 58/*6*/, 59/*7*/,
+    60/*8*/, 61/*9*/, -1,      -1,      -1,      -1,      -1,      -1,
+    -1,       0/*A*/,  1/*B*/,  2/*C*/,  3/*D*/,  4/*E*/,  5/*F*/,  6/*G*/,
+    07/*H*/,  8/*I*/,  9/*J*/, 10/*K*/, 11/*L*/, 12/*M*/, 13/*N*/, 14/*O*/,
+    15/*P*/, 16/*Q*/, 17/*R*/, 18/*S*/, 19/*T*/, 20/*U*/, 21/*V*/, 22/*W*/,
+    23/*X*/, 24/*Y*/, 25/*Z*/, -1,      -1,      -1,      -1,      -1,
+    -1,      26/*a*/, 27/*b*/, 28/*c*/, 29/*d*/, 30/*e*/, 31/*f*/, 32/*g*/,
+    33/*h*/, 34/*i*/, 35/*j*/, 36/*k*/, 37/*l*/, 38/*m*/, 39/*n*/, 40/*o*/,
+    41/*p*/, 42/*q*/, 43/*r*/, 44/*s*/, 45/*t*/, 46/*u*/, 47/*v*/, 48/*w*/,
+    49/*x*/, 50/*y*/, 51/*z*/, -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1
+};
+
+constexpr signed char kUnWebSafeBase64[] = {
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      62/*-*/, -1,      -1,
+    52/*0*/, 53/*1*/, 54/*2*/, 55/*3*/, 56/*4*/, 57/*5*/, 58/*6*/, 59/*7*/,
+    60/*8*/, 61/*9*/, -1,      -1,      -1,      -1,      -1,      -1,
+    -1,       0/*A*/,  1/*B*/,  2/*C*/,  3/*D*/,  4/*E*/,  5/*F*/,  6/*G*/,
+    07/*H*/,  8/*I*/,  9/*J*/, 10/*K*/, 11/*L*/, 12/*M*/, 13/*N*/, 14/*O*/,
+    15/*P*/, 16/*Q*/, 17/*R*/, 18/*S*/, 19/*T*/, 20/*U*/, 21/*V*/, 22/*W*/,
+    23/*X*/, 24/*Y*/, 25/*Z*/, -1,      -1,      -1,      -1,      63/*_*/,
+    -1,      26/*a*/, 27/*b*/, 28/*c*/, 29/*d*/, 30/*e*/, 31/*f*/, 32/*g*/,
+    33/*h*/, 34/*i*/, 35/*j*/, 36/*k*/, 37/*l*/, 38/*m*/, 39/*n*/, 40/*o*/,
+    41/*p*/, 42/*q*/, 43/*r*/, 44/*s*/, 45/*t*/, 46/*u*/, 47/*v*/, 48/*w*/,
+    49/*x*/, 50/*y*/, 51/*z*/, -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1,
+    -1,      -1,      -1,      -1,      -1,      -1,      -1,      -1
+};
+/* clang-format on */
+
+constexpr char kWebSafeBase64Chars[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+
+template <typename String>
+bool Base64UnescapeInternal(const char* src, size_t slen, String* dest,
+                            const signed char* unbase64) {
+  // Determine the size of the output std::string.  Base64 encodes every 3 bytes into
+  // 4 characters.  any leftover chars are added directly for good measure.
+  // This is documented in the base64 RFC: http://tools.ietf.org/html/rfc3548
+  const size_t dest_len = 3 * (slen / 4) + (slen % 4);
+
+  strings_internal::STLStringResizeUninitialized(dest, dest_len);
+
+  // We are getting the destination buffer by getting the beginning of the
+  // std::string and converting it into a char *.
+  size_t len;
+  const bool ok =
+      Base64UnescapeInternal(src, slen, &(*dest)[0], dest_len, unbase64, &len);
+  if (!ok) {
+    dest->clear();
+    return false;
+  }
+
+  // could be shorter if there was padding
+  assert(len <= dest_len);
+  dest->erase(len);
+
+  return true;
+}
+
+/* clang-format off */
+constexpr char kHexValueLenient[256] = {
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  1,  2,  3,  4,  5,  6, 7, 8, 9, 0, 0, 0, 0, 0, 0,  // '0'..'9'
+    0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0,  // 'A'..'F'
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0,  // 'a'..'f'
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+
+/* clang-format on */
+
+// This is a templated function so that T can be either a char*
+// or a string.  This works because we use the [] operator to access
+// individual characters at a time.
+template <typename T>
+void HexStringToBytesInternal(const char* from, T to, ptrdiff_t num) {
+  for (int i = 0; i < num; i++) {
+    to[i] = (kHexValueLenient[from[i * 2] & 0xFF] << 4) +
+            (kHexValueLenient[from[i * 2 + 1] & 0xFF]);
+  }
+}
+
+// This is a templated function so that T can be either a char* or a
+// std::string.
+template <typename T>
+void BytesToHexStringInternal(const unsigned char* src, T dest, ptrdiff_t num) {
+  auto dest_ptr = &dest[0];
+  for (auto src_ptr = src; src_ptr != (src + num); ++src_ptr, dest_ptr += 2) {
+    const char* hex_p = &numbers_internal::kHexTable[*src_ptr * 2];
+    std::copy(hex_p, hex_p + 2, dest_ptr);
+  }
+}
+
+}  // namespace
+
+// ----------------------------------------------------------------------
+// CUnescape()
+//
+// See CUnescapeInternal() for implementation details.
+// ----------------------------------------------------------------------
+bool CUnescape(absl::string_view source, std::string* dest,
+               std::string* error) {
+  return CUnescapeInternal(source, kUnescapeNulls, dest, error);
+}
+
+std::string CEscape(absl::string_view src) {
+  std::string dest;
+  CEscapeAndAppendInternal(src, &dest);
+  return dest;
+}
+
+std::string CHexEscape(absl::string_view src) {
+  return CEscapeInternal(src, true, false);
+}
+
+std::string Utf8SafeCEscape(absl::string_view src) {
+  return CEscapeInternal(src, false, true);
+}
+
+std::string Utf8SafeCHexEscape(absl::string_view src) {
+  return CEscapeInternal(src, true, true);
+}
+
+// ----------------------------------------------------------------------
+// Base64Unescape() - base64 decoder
+// Base64Escape() - base64 encoder
+// WebSafeBase64Unescape() - Google's variation of base64 decoder
+// WebSafeBase64Escape() - Google's variation of base64 encoder
+//
+// Check out
+// http://tools.ietf.org/html/rfc2045 for formal description, but what we
+// care about is that...
+//   Take the encoded stuff in groups of 4 characters and turn each
+//   character into a code 0 to 63 thus:
+//           A-Z map to 0 to 25
+//           a-z map to 26 to 51
+//           0-9 map to 52 to 61
+//           +(- for WebSafe) maps to 62
+//           /(_ for WebSafe) maps to 63
+//   There will be four numbers, all less than 64 which can be represented
+//   by a 6 digit binary number (aaaaaa, bbbbbb, cccccc, dddddd respectively).
+//   Arrange the 6 digit binary numbers into three bytes as such:
+//   aaaaaabb bbbbcccc ccdddddd
+//   Equals signs (one or two) are used at the end of the encoded block to
+//   indicate that the text was not an integer multiple of three bytes long.
+// ----------------------------------------------------------------------
+
+bool Base64Unescape(absl::string_view src, std::string* dest) {
+  return Base64UnescapeInternal(src.data(), src.size(), dest, kUnBase64);
+}
+
+bool WebSafeBase64Unescape(absl::string_view src, std::string* dest) {
+  return Base64UnescapeInternal(src.data(), src.size(), dest, kUnWebSafeBase64);
+}
+
+void Base64Escape(absl::string_view src, std::string* dest) {
+  strings_internal::Base64EscapeInternal(
+      reinterpret_cast<const unsigned char*>(src.data()), src.size(), dest,
+      true, strings_internal::kBase64Chars);
+}
+
+void WebSafeBase64Escape(absl::string_view src, std::string* dest) {
+  strings_internal::Base64EscapeInternal(
+      reinterpret_cast<const unsigned char*>(src.data()), src.size(), dest,
+      false, kWebSafeBase64Chars);
+}
+
+std::string Base64Escape(absl::string_view src) {
+  std::string dest;
+  strings_internal::Base64EscapeInternal(
+      reinterpret_cast<const unsigned char*>(src.data()), src.size(), &dest,
+      true, strings_internal::kBase64Chars);
+  return dest;
+}
+
+std::string WebSafeBase64Escape(absl::string_view src) {
+  std::string dest;
+  strings_internal::Base64EscapeInternal(
+      reinterpret_cast<const unsigned char*>(src.data()), src.size(), &dest,
+      false, kWebSafeBase64Chars);
+  return dest;
+}
+
+std::string HexStringToBytes(absl::string_view from) {
+  std::string result;
+  const auto num = from.size() / 2;
+  strings_internal::STLStringResizeUninitialized(&result, num);
+  absl::HexStringToBytesInternal<std::string&>(from.data(), result, num);
+  return result;
+}
+
+std::string BytesToHexString(absl::string_view from) {
+  std::string result;
+  strings_internal::STLStringResizeUninitialized(&result, 2 * from.size());
+  absl::BytesToHexStringInternal<std::string&>(
+      reinterpret_cast<const unsigned char*>(from.data()), result, from.size());
+  return result;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/escaping.h b/ChattingApp 000/Pods/abseil/absl/strings/escaping.h
new file mode 100644
index 0000000..f5ca26c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/escaping.h	
@@ -0,0 +1,164 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: escaping.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains string utilities involved in escaping and
+// unescaping strings in various ways.
+
+#ifndef ABSL_STRINGS_ESCAPING_H_
+#define ABSL_STRINGS_ESCAPING_H_
+
+#include <cstddef>
+#include <string>
+#include <vector>
+
+#include "absl/base/macros.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/str_join.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// CUnescape()
+//
+// Unescapes a `source` string and copies it into `dest`, rewriting C-style
+// escape sequences (https://en.cppreference.com/w/cpp/language/escape) into
+// their proper code point equivalents, returning `true` if successful.
+//
+// The following unescape sequences can be handled:
+//
+//   * ASCII escape sequences ('\n','\r','\\', etc.) to their ASCII equivalents
+//   * Octal escape sequences ('\nnn') to byte nnn. The unescaped value must
+//     resolve to a single byte or an error will occur. E.g. values greater than
+//     0xff will produce an error.
+//   * Hexadecimal escape sequences ('\xnn') to byte nn. While an arbitrary
+//     number of following digits are allowed, the unescaped value must resolve
+//     to a single byte or an error will occur. E.g. '\x0045' is equivalent to
+//     '\x45', but '\x1234' will produce an error.
+//   * Unicode escape sequences ('\unnnn' for exactly four hex digits or
+//     '\Unnnnnnnn' for exactly eight hex digits, which will be encoded in
+//     UTF-8. (E.g., `\u2019` unescapes to the three bytes 0xE2, 0x80, and
+//     0x99).
+//
+// If any errors are encountered, this function returns `false`, leaving the
+// `dest` output parameter in an unspecified state, and stores the first
+// encountered error in `error`. To disable error reporting, set `error` to
+// `nullptr` or use the overload with no error reporting below.
+//
+// Example:
+//
+//   std::string s = "foo\\rbar\\nbaz\\t";
+//   std::string unescaped_s;
+//   if (!absl::CUnescape(s, &unescaped_s) {
+//     ...
+//   }
+//   EXPECT_EQ(unescaped_s, "foo\rbar\nbaz\t");
+bool CUnescape(absl::string_view source, std::string* dest, std::string* error);
+
+// Overload of `CUnescape()` with no error reporting.
+inline bool CUnescape(absl::string_view source, std::string* dest) {
+  return CUnescape(source, dest, nullptr);
+}
+
+// CEscape()
+//
+// Escapes a 'src' string using C-style escapes sequences
+// (https://en.cppreference.com/w/cpp/language/escape), escaping other
+// non-printable/non-whitespace bytes as octal sequences (e.g. "\377").
+//
+// Example:
+//
+//   std::string s = "foo\rbar\tbaz\010\011\012\013\014\x0d\n";
+//   std::string escaped_s = absl::CEscape(s);
+//   EXPECT_EQ(escaped_s, "foo\\rbar\\tbaz\\010\\t\\n\\013\\014\\r\\n");
+std::string CEscape(absl::string_view src);
+
+// CHexEscape()
+//
+// Escapes a 'src' string using C-style escape sequences, escaping
+// other non-printable/non-whitespace bytes as hexadecimal sequences (e.g.
+// "\xFF").
+//
+// Example:
+//
+//   std::string s = "foo\rbar\tbaz\010\011\012\013\014\x0d\n";
+//   std::string escaped_s = absl::CHexEscape(s);
+//   EXPECT_EQ(escaped_s, "foo\\rbar\\tbaz\\x08\\t\\n\\x0b\\x0c\\r\\n");
+std::string CHexEscape(absl::string_view src);
+
+// Utf8SafeCEscape()
+//
+// Escapes a 'src' string using C-style escape sequences, escaping bytes as
+// octal sequences, and passing through UTF-8 characters without conversion.
+// I.e., when encountering any bytes with their high bit set, this function
+// will not escape those values, whether or not they are valid UTF-8.
+std::string Utf8SafeCEscape(absl::string_view src);
+
+// Utf8SafeCHexEscape()
+//
+// Escapes a 'src' string using C-style escape sequences, escaping bytes as
+// hexadecimal sequences, and passing through UTF-8 characters without
+// conversion.
+std::string Utf8SafeCHexEscape(absl::string_view src);
+
+// Base64Unescape()
+//
+// Converts a `src` string encoded in Base64 to its binary equivalent, writing
+// it to a `dest` buffer, returning `true` on success. If `src` contains invalid
+// characters, `dest` is cleared and returns `false`.
+bool Base64Unescape(absl::string_view src, std::string* dest);
+
+// WebSafeBase64Unescape()
+//
+// Converts a `src` string encoded in Base64 to its binary equivalent, writing
+// it to a `dest` buffer, but using '-' instead of '+', and '_' instead of '/'.
+// If `src` contains invalid characters, `dest` is cleared and returns `false`.
+bool WebSafeBase64Unescape(absl::string_view src, std::string* dest);
+
+// Base64Escape()
+//
+// Encodes a `src` string into a base64-encoded string, with padding characters.
+// This function conforms with RFC 4648 section 4 (base64).
+void Base64Escape(absl::string_view src, std::string* dest);
+std::string Base64Escape(absl::string_view src);
+
+// WebSafeBase64Escape()
+//
+// Encodes a `src` string into a base64-like string, using '-' instead of '+'
+// and '_' instead of '/', and without padding. This function conforms with RFC
+// 4648 section 5 (base64url).
+void WebSafeBase64Escape(absl::string_view src, std::string* dest);
+std::string WebSafeBase64Escape(absl::string_view src);
+
+// HexStringToBytes()
+//
+// Converts an ASCII hex string into bytes, returning binary data of length
+// `from.size()/2`.
+std::string HexStringToBytes(absl::string_view from);
+
+// BytesToHexString()
+//
+// Converts binary data into an ASCII text string, returning a string of size
+// `2*from.size()`.
+std::string BytesToHexString(absl::string_view from);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_ESCAPING_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/char_map.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/char_map.h
new file mode 100644
index 0000000..a76e603
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/char_map.h	
@@ -0,0 +1,156 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Character Map Class
+//
+// A fast, bit-vector map for 8-bit unsigned characters.
+// This class is useful for non-character purposes as well.
+
+#ifndef ABSL_STRINGS_INTERNAL_CHAR_MAP_H_
+#define ABSL_STRINGS_INTERNAL_CHAR_MAP_H_
+
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+class Charmap {
+ public:
+  constexpr Charmap() : m_() {}
+
+  // Initializes with a given char*.  Note that NUL is not treated as
+  // a terminator, but rather a char to be flicked.
+  Charmap(const char* str, int len) : m_() {
+    while (len--) SetChar(*str++);
+  }
+
+  // Initializes with a given char*.  NUL is treated as a terminator
+  // and will not be in the charmap.
+  explicit Charmap(const char* str) : m_() {
+    while (*str) SetChar(*str++);
+  }
+
+  constexpr bool contains(unsigned char c) const {
+    return (m_[c / 64] >> (c % 64)) & 0x1;
+  }
+
+  // Returns true if and only if a character exists in both maps.
+  bool IntersectsWith(const Charmap& c) const {
+    for (size_t i = 0; i < ABSL_ARRAYSIZE(m_); ++i) {
+      if ((m_[i] & c.m_[i]) != 0) return true;
+    }
+    return false;
+  }
+
+  bool IsZero() const {
+    for (uint64_t c : m_) {
+      if (c != 0) return false;
+    }
+    return true;
+  }
+
+  // Containing only a single specified char.
+  static constexpr Charmap Char(char x) {
+    return Charmap(CharMaskForWord(x, 0), CharMaskForWord(x, 1),
+                   CharMaskForWord(x, 2), CharMaskForWord(x, 3));
+  }
+
+  // Containing all the chars in the C-std::string 's'.
+  // Note that this is expensively recursive because of the C++11 constexpr
+  // formulation. Use only in constexpr initializers.
+  static constexpr Charmap FromString(const char* s) {
+    return *s == 0 ? Charmap() : (Char(*s) | FromString(s + 1));
+  }
+
+  // Containing all the chars in the closed interval [lo,hi].
+  static constexpr Charmap Range(char lo, char hi) {
+    return Charmap(RangeForWord(lo, hi, 0), RangeForWord(lo, hi, 1),
+                   RangeForWord(lo, hi, 2), RangeForWord(lo, hi, 3));
+  }
+
+  friend constexpr Charmap operator&(const Charmap& a, const Charmap& b) {
+    return Charmap(a.m_[0] & b.m_[0], a.m_[1] & b.m_[1], a.m_[2] & b.m_[2],
+                   a.m_[3] & b.m_[3]);
+  }
+
+  friend constexpr Charmap operator|(const Charmap& a, const Charmap& b) {
+    return Charmap(a.m_[0] | b.m_[0], a.m_[1] | b.m_[1], a.m_[2] | b.m_[2],
+                   a.m_[3] | b.m_[3]);
+  }
+
+  friend constexpr Charmap operator~(const Charmap& a) {
+    return Charmap(~a.m_[0], ~a.m_[1], ~a.m_[2], ~a.m_[3]);
+  }
+
+ private:
+  constexpr Charmap(uint64_t b0, uint64_t b1, uint64_t b2, uint64_t b3)
+      : m_{b0, b1, b2, b3} {}
+
+  static constexpr uint64_t RangeForWord(unsigned char lo, unsigned char hi,
+                                         uint64_t word) {
+    return OpenRangeFromZeroForWord(hi + 1, word) &
+           ~OpenRangeFromZeroForWord(lo, word);
+  }
+
+  // All the chars in the specified word of the range [0, upper).
+  static constexpr uint64_t OpenRangeFromZeroForWord(uint64_t upper,
+                                                     uint64_t word) {
+    return (upper <= 64 * word)
+               ? 0
+               : (upper >= 64 * (word + 1))
+                     ? ~static_cast<uint64_t>(0)
+                     : (~static_cast<uint64_t>(0) >> (64 - upper % 64));
+  }
+
+  static constexpr uint64_t CharMaskForWord(unsigned char x, uint64_t word) {
+    return (x / 64 == word) ? (static_cast<uint64_t>(1) << (x % 64)) : 0;
+  }
+
+ private:
+  void SetChar(unsigned char c) {
+    m_[c / 64] |= static_cast<uint64_t>(1) << (c % 64);
+  }
+
+  uint64_t m_[4];
+};
+
+// Mirror the char-classifying predicates in <cctype>
+constexpr Charmap UpperCharmap() { return Charmap::Range('A', 'Z'); }
+constexpr Charmap LowerCharmap() { return Charmap::Range('a', 'z'); }
+constexpr Charmap DigitCharmap() { return Charmap::Range('0', '9'); }
+constexpr Charmap AlphaCharmap() { return LowerCharmap() | UpperCharmap(); }
+constexpr Charmap AlnumCharmap() { return DigitCharmap() | AlphaCharmap(); }
+constexpr Charmap XDigitCharmap() {
+  return DigitCharmap() | Charmap::Range('A', 'F') | Charmap::Range('a', 'f');
+}
+constexpr Charmap PrintCharmap() { return Charmap::Range(0x20, 0x7e); }
+constexpr Charmap SpaceCharmap() { return Charmap::FromString("\t\n\v\f\r "); }
+constexpr Charmap CntrlCharmap() {
+  return Charmap::Range(0, 0x7f) & ~PrintCharmap();
+}
+constexpr Charmap BlankCharmap() { return Charmap::FromString("\t "); }
+constexpr Charmap GraphCharmap() { return PrintCharmap() & ~SpaceCharmap(); }
+constexpr Charmap PunctCharmap() { return GraphCharmap() & ~AlnumCharmap(); }
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_CHAR_MAP_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.cc
new file mode 100644
index 0000000..66f33e7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.cc	
@@ -0,0 +1,359 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/charconv_bigint.h"
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+namespace {
+
+// Table containing some large powers of 5, for fast computation.
+
+// Constant step size for entries in the kLargePowersOfFive table.  Each entry
+// is larger than the previous entry by a factor of 5**kLargePowerOfFiveStep
+// (or 5**27).
+//
+// In other words, the Nth entry in the table is 5**(27*N).
+//
+// 5**27 is the largest power of 5 that fits in 64 bits.
+constexpr int kLargePowerOfFiveStep = 27;
+
+// The largest legal index into the kLargePowersOfFive table.
+//
+// In other words, the largest precomputed power of 5 is 5**(27*20).
+constexpr int kLargestPowerOfFiveIndex = 20;
+
+// Table of powers of (5**27), up to (5**27)**20 == 5**540.
+//
+// Used to generate large powers of 5 while limiting the number of repeated
+// multiplications required.
+//
+// clang-format off
+const uint32_t kLargePowersOfFive[] = {
+// 5**27 (i=1), start=0, end=2
+  0xfa10079dU, 0x6765c793U,
+// 5**54 (i=2), start=2, end=6
+  0x97d9f649U, 0x6664242dU, 0x29939b14U, 0x29c30f10U,
+// 5**81 (i=3), start=6, end=12
+  0xc4f809c5U, 0x7bf3f22aU, 0x67bdae34U, 0xad340517U, 0x369d1b5fU, 0x10de1593U,
+// 5**108 (i=4), start=12, end=20
+  0x92b260d1U, 0x9efff7c7U, 0x81de0ec6U, 0xaeba5d56U, 0x410664a4U, 0x4f40737aU,
+  0x20d3846fU, 0x06d00f73U,
+// 5**135 (i=5), start=20, end=30
+  0xff1b172dU, 0x13a1d71cU, 0xefa07617U, 0x7f682d3dU, 0xff8c90c0U, 0x3f0131e7U,
+  0x3fdcb9feU, 0x917b0177U, 0x16c407a7U, 0x02c06b9dU,
+// 5**162 (i=6), start=30, end=42
+  0x960f7199U, 0x056667ecU, 0xe07aefd8U, 0x80f2b9ccU, 0x8273f5e3U, 0xeb9a214aU,
+  0x40b38005U, 0x0e477ad4U, 0x277d08e6U, 0xfa28b11eU, 0xd3f7d784U, 0x011c835bU,
+// 5**189 (i=7), start=42, end=56
+  0xf723d9d5U, 0x3282d3f3U, 0xe00857d1U, 0x69659d25U, 0x2cf117cfU, 0x24da6d07U,
+  0x954d1417U, 0x3e5d8cedU, 0x7a8bb766U, 0xfd785ae6U, 0x645436d2U, 0x40c78b34U,
+  0x94151217U, 0x0072e9f7U,
+// 5**216 (i=8), start=56, end=72
+  0x2b416aa1U, 0x7893c5a7U, 0xe37dc6d4U, 0x2bad2beaU, 0xf0fc846cU, 0x7575ae4bU,
+  0x62587b14U, 0x83b67a34U, 0x02110cdbU, 0xf7992f55U, 0x00deb022U, 0xa4a23becU,
+  0x8af5c5cdU, 0xb85b654fU, 0x818df38bU, 0x002e69d2U,
+// 5**243 (i=9), start=72, end=90
+  0x3518cbbdU, 0x20b0c15fU, 0x38756c2fU, 0xfb5dc3ddU, 0x22ad2d94U, 0xbf35a952U,
+  0xa699192aU, 0x9a613326U, 0xad2a9cedU, 0xd7f48968U, 0xe87dfb54U, 0xc8f05db6U,
+  0x5ef67531U, 0x31c1ab49U, 0xe202ac9fU, 0x9b2957b5U, 0xa143f6d3U, 0x0012bf07U,
+// 5**270 (i=10), start=90, end=110
+  0x8b971de9U, 0x21aba2e1U, 0x63944362U, 0x57172336U, 0xd9544225U, 0xfb534166U,
+  0x08c563eeU, 0x14640ee2U, 0x24e40d31U, 0x02b06537U, 0x03887f14U, 0x0285e533U,
+  0xb744ef26U, 0x8be3a6c4U, 0x266979b4U, 0x6761ece2U, 0xd9cb39e4U, 0xe67de319U,
+  0x0d39e796U, 0x00079250U,
+// 5**297 (i=11), start=110, end=132
+  0x260eb6e5U, 0xf414a796U, 0xee1a7491U, 0xdb9368ebU, 0xf50c105bU, 0x59157750U,
+  0x9ed2fb5cU, 0xf6e56d8bU, 0xeaee8d23U, 0x0f319f75U, 0x2aa134d6U, 0xac2908e9U,
+  0xd4413298U, 0x02f02a55U, 0x989d5a7aU, 0x70dde184U, 0xba8040a7U, 0x03200981U,
+  0xbe03b11cU, 0x3c1c2a18U, 0xd60427a1U, 0x00030ee0U,
+// 5**324 (i=12), start=132, end=156
+  0xce566d71U, 0xf1c4aa25U, 0x4e93ca53U, 0xa72283d0U, 0x551a73eaU, 0x3d0538e2U,
+  0x8da4303fU, 0x6a58de60U, 0x0e660221U, 0x49cf61a6U, 0x8d058fc1U, 0xb9d1a14cU,
+  0x4bab157dU, 0xc85c6932U, 0x518c8b9eU, 0x9b92b8d0U, 0x0d8a0e21U, 0xbd855df9U,
+  0xb3ea59a1U, 0x8da29289U, 0x4584d506U, 0x3752d80fU, 0xb72569c6U, 0x00013c33U,
+// 5**351 (i=13), start=156, end=182
+  0x190f354dU, 0x83695cfeU, 0xe5a4d0c7U, 0xb60fb7e8U, 0xee5bbcc4U, 0xb922054cU,
+  0xbb4f0d85U, 0x48394028U, 0x1d8957dbU, 0x0d7edb14U, 0x4ecc7587U, 0x505e9e02U,
+  0x4c87f36bU, 0x99e66bd6U, 0x44b9ed35U, 0x753037d4U, 0xe5fe5f27U, 0x2742c203U,
+  0x13b2ed2bU, 0xdc525d2cU, 0xe6fde59aU, 0x77ffb18fU, 0x13c5752cU, 0x08a84bccU,
+  0x859a4940U, 0x00007fb6U,
+// 5**378 (i=14), start=182, end=210
+  0x4f98cb39U, 0xa60edbbcU, 0x83b5872eU, 0xa501acffU, 0x9cc76f78U, 0xbadd4c73U,
+  0x43e989faU, 0xca7acf80U, 0x2e0c824fU, 0xb19f4ffcU, 0x092fd81cU, 0xe4eb645bU,
+  0xa1ff84c2U, 0x8a5a83baU, 0xa8a1fae9U, 0x1db43609U, 0xb0fed50bU, 0x0dd7d2bdU,
+  0x7d7accd8U, 0x91fa640fU, 0x37dcc6c5U, 0x1c417fd5U, 0xe4d462adU, 0xe8a43399U,
+  0x131bf9a5U, 0x8df54d29U, 0x36547dc1U, 0x00003395U,
+// 5**405 (i=15), start=210, end=240
+  0x5bd330f5U, 0x77d21967U, 0x1ac481b7U, 0x6be2f7ceU, 0x7f4792a9U, 0xe84c2c52U,
+  0x84592228U, 0x9dcaf829U, 0xdab44ce1U, 0x3d0c311bU, 0x532e297dU, 0x4704e8b4U,
+  0x9cdc32beU, 0x41e64d9dU, 0x7717bea1U, 0xa824c00dU, 0x08f50b27U, 0x0f198d77U,
+  0x49bbfdf0U, 0x025c6c69U, 0xd4e55cd3U, 0xf083602bU, 0xb9f0fecdU, 0xc0864aeaU,
+  0x9cb98681U, 0xaaf620e9U, 0xacb6df30U, 0x4faafe66U, 0x8af13c3bU, 0x000014d5U,
+// 5**432 (i=16), start=240, end=272
+  0x682bb941U, 0x89a9f297U, 0xcba75d7bU, 0x404217b1U, 0xb4e519e9U, 0xa1bc162bU,
+  0xf7f5910aU, 0x98715af5U, 0x2ff53e57U, 0xe3ef118cU, 0x490c4543U, 0xbc9b1734U,
+  0x2affbe4dU, 0x4cedcb4cU, 0xfb14e99eU, 0x35e34212U, 0xece39c24U, 0x07673ab3U,
+  0xe73115ddU, 0xd15d38e7U, 0x093eed3bU, 0xf8e7eac5U, 0x78a8cc80U, 0x25227aacU,
+  0x3f590551U, 0x413da1cbU, 0xdf643a55U, 0xab65ad44U, 0xd70b23d7U, 0xc672cd76U,
+  0x3364ea62U, 0x0000086aU,
+// 5**459 (i=17), start=272, end=306
+  0x22f163ddU, 0x23cf07acU, 0xbe2af6c2U, 0xf412f6f6U, 0xc3ff541eU, 0x6eeaf7deU,
+  0xa47047e0U, 0x408cda92U, 0x0f0eeb08U, 0x56deba9dU, 0xcfc6b090U, 0x8bbbdf04U,
+  0x3933cdb3U, 0x9e7bb67dU, 0x9f297035U, 0x38946244U, 0xee1d37bbU, 0xde898174U,
+  0x63f3559dU, 0x705b72fbU, 0x138d27d9U, 0xf8603a78U, 0x735eec44U, 0xe30987d5U,
+  0xc6d38070U, 0x9cfe548eU, 0x9ff01422U, 0x7c564aa8U, 0x91cc60baU, 0xcbc3565dU,
+  0x7550a50bU, 0x6909aeadU, 0x13234c45U, 0x00000366U,
+// 5**486 (i=18), start=306, end=342
+  0x17954989U, 0x3a7d7709U, 0x98042de5U, 0xa9011443U, 0x45e723c2U, 0x269ffd6fU,
+  0x58852a46U, 0xaaa1042aU, 0x2eee8153U, 0xb2b6c39eU, 0xaf845b65U, 0xf6c365d7U,
+  0xe4cffb2bU, 0xc840e90cU, 0xabea8abbU, 0x5c58f8d2U, 0x5c19fa3aU, 0x4670910aU,
+  0x4449f21cU, 0xefa645b3U, 0xcc427decU, 0x083c3d73U, 0x467cb413U, 0x6fe10ae4U,
+  0x3caffc72U, 0x9f8da55eU, 0x5e5c8ea7U, 0x490594bbU, 0xf0871b0bU, 0xdd89816cU,
+  0x8e931df8U, 0xe85ce1c9U, 0xcca090a5U, 0x575fa16bU, 0x6b9f106cU, 0x0000015fU,
+// 5**513 (i=19), start=342, end=380
+  0xee20d805U, 0x57bc3c07U, 0xcdea624eU, 0xd3f0f52dU, 0x9924b4f4U, 0xcf968640U,
+  0x61d41962U, 0xe87fb464U, 0xeaaf51c7U, 0x564c8b60U, 0xccda4028U, 0x529428bbU,
+  0x313a1fa8U, 0x96bd0f94U, 0x7a82ebaaU, 0xad99e7e9U, 0xf2668cd4U, 0xbe33a45eU,
+  0xfd0db669U, 0x87ee369fU, 0xd3ec20edU, 0x9c4d7db7U, 0xdedcf0d8U, 0x7cd2ca64U,
+  0xe25a6577U, 0x61003fd4U, 0xe56f54ccU, 0x10b7c748U, 0x40526e5eU, 0x7300ae87U,
+  0x5c439261U, 0x2c0ff469U, 0xbf723f12U, 0xb2379b61U, 0xbf59b4f5U, 0xc91b1c3fU,
+  0xf0046d27U, 0x0000008dU,
+// 5**540 (i=20), start=380, end=420
+  0x525c9e11U, 0xf4e0eb41U, 0xebb2895dU, 0x5da512f9U, 0x7d9b29d4U, 0x452f4edcU,
+  0x0b90bc37U, 0x341777cbU, 0x63d269afU, 0x1da77929U, 0x0a5c1826U, 0x77991898U,
+  0x5aeddf86U, 0xf853a877U, 0x538c31ccU, 0xe84896daU, 0xb7a0010bU, 0x17ef4de5U,
+  0xa52a2adeU, 0x029fd81cU, 0x987ce701U, 0x27fefd77U, 0xdb46c66fU, 0x5d301900U,
+  0x496998c0U, 0xbb6598b9U, 0x5eebb607U, 0xe547354aU, 0xdf4a2f7eU, 0xf06c4955U,
+  0x96242ffaU, 0x1775fb27U, 0xbecc58ceU, 0xebf2a53bU, 0x3eaad82aU, 0xf41137baU,
+  0x573e6fbaU, 0xfb4866b8U, 0x54002148U, 0x00000039U,
+};
+// clang-format on
+
+// Returns a pointer to the big integer data for (5**27)**i.  i must be
+// between 1 and 20, inclusive.
+const uint32_t* LargePowerOfFiveData(int i) {
+  return kLargePowersOfFive + i * (i - 1);
+}
+
+// Returns the size of the big integer data for (5**27)**i, in words.  i must be
+// between 1 and 20, inclusive.
+int LargePowerOfFiveSize(int i) { return 2 * i; }
+}  // namespace
+
+ABSL_DLL const uint32_t kFiveToNth[14] = {
+    1,     5,      25,      125,     625,      3125,      15625,
+    78125, 390625, 1953125, 9765625, 48828125, 244140625, 1220703125,
+};
+
+ABSL_DLL const uint32_t kTenToNth[10] = {
+    1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000,
+};
+
+template <int max_words>
+int BigUnsigned<max_words>::ReadFloatMantissa(const ParsedFloat& fp,
+                                              int significant_digits) {
+  SetToZero();
+  assert(fp.type == FloatType::kNumber);
+
+  if (fp.subrange_begin == nullptr) {
+    // We already exactly parsed the mantissa, so no more work is necessary.
+    words_[0] = fp.mantissa & 0xffffffffu;
+    words_[1] = fp.mantissa >> 32;
+    if (words_[1]) {
+      size_ = 2;
+    } else if (words_[0]) {
+      size_ = 1;
+    }
+    return fp.exponent;
+  }
+  int exponent_adjust =
+      ReadDigits(fp.subrange_begin, fp.subrange_end, significant_digits);
+  return fp.literal_exponent + exponent_adjust;
+}
+
+template <int max_words>
+int BigUnsigned<max_words>::ReadDigits(const char* begin, const char* end,
+                                       int significant_digits) {
+  assert(significant_digits <= Digits10() + 1);
+  SetToZero();
+
+  bool after_decimal_point = false;
+  // Discard any leading zeroes before the decimal point
+  while (begin < end && *begin == '0') {
+    ++begin;
+  }
+  int dropped_digits = 0;
+  // Discard any trailing zeroes.  These may or may not be after the decimal
+  // point.
+  while (begin < end && *std::prev(end) == '0') {
+    --end;
+    ++dropped_digits;
+  }
+  if (begin < end && *std::prev(end) == '.') {
+    // If the std::string ends in '.', either before or after dropping zeroes, then
+    // drop the decimal point and look for more digits to drop.
+    dropped_digits = 0;
+    --end;
+    while (begin < end && *std::prev(end) == '0') {
+      --end;
+      ++dropped_digits;
+    }
+  } else if (dropped_digits) {
+    // We dropped digits, and aren't sure if they're before or after the decimal
+    // point.  Figure that out now.
+    const char* dp = std::find(begin, end, '.');
+    if (dp != end) {
+      // The dropped trailing digits were after the decimal point, so don't
+      // count them.
+      dropped_digits = 0;
+    }
+  }
+  // Any non-fraction digits we dropped need to be accounted for in our exponent
+  // adjustment.
+  int exponent_adjust = dropped_digits;
+
+  uint32_t queued = 0;
+  int digits_queued = 0;
+  for (; begin != end && significant_digits > 0; ++begin) {
+    if (*begin == '.') {
+      after_decimal_point = true;
+      continue;
+    }
+    if (after_decimal_point) {
+      // For each fractional digit we emit in our parsed integer, adjust our
+      // decimal exponent to compensate.
+      --exponent_adjust;
+    }
+    int digit = (*begin - '0');
+    --significant_digits;
+    if (significant_digits == 0 && std::next(begin) != end &&
+        (digit == 0 || digit == 5)) {
+      // If this is the very last significant digit, but insignificant digits
+      // remain, we know that the last of those remaining significant digits is
+      // nonzero.  (If it wasn't, we would have stripped it before we got here.)
+      // So if this final digit is a 0 or 5, adjust it upward by 1.
+      //
+      // This adjustment is what allows incredibly large mantissas ending in
+      // 500000...000000000001 to correctly round up, rather than to nearest.
+      ++digit;
+    }
+    queued = 10 * queued + digit;
+    ++digits_queued;
+    if (digits_queued == kMaxSmallPowerOfTen) {
+      MultiplyBy(kTenToNth[kMaxSmallPowerOfTen]);
+      AddWithCarry(0, queued);
+      queued = digits_queued = 0;
+    }
+  }
+  // Encode any remaining digits.
+  if (digits_queued) {
+    MultiplyBy(kTenToNth[digits_queued]);
+    AddWithCarry(0, queued);
+  }
+
+  // If any insignificant digits remain, we will drop them.  But if we have not
+  // yet read the decimal point, then we have to adjust the exponent to account
+  // for the dropped digits.
+  if (begin < end && !after_decimal_point) {
+    // This call to std::find will result in a pointer either to the decimal
+    // point, or to the end of our buffer if there was none.
+    //
+    // Either way, [begin, decimal_point) will contain the set of dropped digits
+    // that require an exponent adjustment.
+    const char* decimal_point = std::find(begin, end, '.');
+    exponent_adjust += (decimal_point - begin);
+  }
+  return exponent_adjust;
+}
+
+template <int max_words>
+/* static */ BigUnsigned<max_words> BigUnsigned<max_words>::FiveToTheNth(
+    int n) {
+  BigUnsigned answer(1u);
+
+  // Seed from the table of large powers, if possible.
+  bool first_pass = true;
+  while (n >= kLargePowerOfFiveStep) {
+    int big_power =
+        std::min(n / kLargePowerOfFiveStep, kLargestPowerOfFiveIndex);
+    if (first_pass) {
+      // just copy, rather than multiplying by 1
+      std::copy(
+          LargePowerOfFiveData(big_power),
+          LargePowerOfFiveData(big_power) + LargePowerOfFiveSize(big_power),
+          answer.words_);
+      answer.size_ = LargePowerOfFiveSize(big_power);
+      first_pass = false;
+    } else {
+      answer.MultiplyBy(LargePowerOfFiveSize(big_power),
+                        LargePowerOfFiveData(big_power));
+    }
+    n -= kLargePowerOfFiveStep * big_power;
+  }
+  answer.MultiplyByFiveToTheNth(n);
+  return answer;
+}
+
+template <int max_words>
+void BigUnsigned<max_words>::MultiplyStep(int original_size,
+                                          const uint32_t* other_words,
+                                          int other_size, int step) {
+  int this_i = std::min(original_size - 1, step);
+  int other_i = step - this_i;
+
+  uint64_t this_word = 0;
+  uint64_t carry = 0;
+  for (; this_i >= 0 && other_i < other_size; --this_i, ++other_i) {
+    uint64_t product = words_[this_i];
+    product *= other_words[other_i];
+    this_word += product;
+    carry += (this_word >> 32);
+    this_word &= 0xffffffff;
+  }
+  AddWithCarry(step + 1, carry);
+  words_[step] = this_word & 0xffffffff;
+  if (this_word > 0 && size_ <= step) {
+    size_ = step + 1;
+  }
+}
+
+template <int max_words>
+std::string BigUnsigned<max_words>::ToString() const {
+  BigUnsigned<max_words> copy = *this;
+  std::string result;
+  // Build result in reverse order
+  while (copy.size() > 0) {
+    int next_digit = copy.DivMod<10>();
+    result.push_back('0' + next_digit);
+  }
+  if (result.empty()) {
+    result.push_back('0');
+  }
+  std::reverse(result.begin(), result.end());
+  return result;
+}
+
+template class BigUnsigned<4>;
+template class BigUnsigned<84>;
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.h
new file mode 100644
index 0000000..999e9ae
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_bigint.h	
@@ -0,0 +1,423 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_CHARCONV_BIGINT_H_
+#define ABSL_STRINGS_INTERNAL_CHARCONV_BIGINT_H_
+
+#include <algorithm>
+#include <cstdint>
+#include <iostream>
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/internal/charconv_parse.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// The largest power that 5 that can be raised to, and still fit in a uint32_t.
+constexpr int kMaxSmallPowerOfFive = 13;
+// The largest power that 10 that can be raised to, and still fit in a uint32_t.
+constexpr int kMaxSmallPowerOfTen = 9;
+
+ABSL_DLL extern const uint32_t
+    kFiveToNth[kMaxSmallPowerOfFive + 1];
+ABSL_DLL extern const uint32_t kTenToNth[kMaxSmallPowerOfTen + 1];
+
+// Large, fixed-width unsigned integer.
+//
+// Exact rounding for decimal-to-binary floating point conversion requires very
+// large integer math, but a design goal of absl::from_chars is to avoid
+// allocating memory.  The integer precision needed for decimal-to-binary
+// conversions is large but bounded, so a huge fixed-width integer class
+// suffices.
+//
+// This is an intentionally limited big integer class.  Only needed operations
+// are implemented.  All storage lives in an array data member, and all
+// arithmetic is done in-place, to avoid requiring separate storage for operand
+// and result.
+//
+// This is an internal class.  Some methods live in the .cc file, and are
+// instantiated only for the values of max_words we need.
+template <int max_words>
+class BigUnsigned {
+ public:
+  static_assert(max_words == 4 || max_words == 84,
+                "unsupported max_words value");
+
+  BigUnsigned() : size_(0), words_{} {}
+  explicit constexpr BigUnsigned(uint64_t v)
+      : size_((v >> 32) ? 2 : v ? 1 : 0),
+        words_{static_cast<uint32_t>(v & 0xffffffffu),
+               static_cast<uint32_t>(v >> 32)} {}
+
+  // Constructs a BigUnsigned from the given string_view containing a decimal
+  // value.  If the input std::string is not a decimal integer, constructs a 0
+  // instead.
+  explicit BigUnsigned(absl::string_view sv) : size_(0), words_{} {
+    // Check for valid input, returning a 0 otherwise.  This is reasonable
+    // behavior only because this constructor is for unit tests.
+    if (std::find_if_not(sv.begin(), sv.end(), ascii_isdigit) != sv.end() ||
+        sv.empty()) {
+      return;
+    }
+    int exponent_adjust =
+        ReadDigits(sv.data(), sv.data() + sv.size(), Digits10() + 1);
+    if (exponent_adjust > 0) {
+      MultiplyByTenToTheNth(exponent_adjust);
+    }
+  }
+
+  // Loads the mantissa value of a previously-parsed float.
+  //
+  // Returns the associated decimal exponent.  The value of the parsed float is
+  // exactly *this * 10**exponent.
+  int ReadFloatMantissa(const ParsedFloat& fp, int significant_digits);
+
+  // Returns the number of decimal digits of precision this type provides.  All
+  // numbers with this many decimal digits or fewer are representable by this
+  // type.
+  //
+  // Analagous to std::numeric_limits<BigUnsigned>::digits10.
+  static constexpr int Digits10() {
+    // 9975007/1035508 is very slightly less than log10(2**32).
+    return static_cast<uint64_t>(max_words) * 9975007 / 1035508;
+  }
+
+  // Shifts left by the given number of bits.
+  void ShiftLeft(int count) {
+    if (count > 0) {
+      const int word_shift = count / 32;
+      if (word_shift >= max_words) {
+        SetToZero();
+        return;
+      }
+      size_ = (std::min)(size_ + word_shift, max_words);
+      count %= 32;
+      if (count == 0) {
+        std::copy_backward(words_, words_ + size_ - word_shift, words_ + size_);
+      } else {
+        for (int i = (std::min)(size_, max_words - 1); i > word_shift; --i) {
+          words_[i] = (words_[i - word_shift] << count) |
+                      (words_[i - word_shift - 1] >> (32 - count));
+        }
+        words_[word_shift] = words_[0] << count;
+        // Grow size_ if necessary.
+        if (size_ < max_words && words_[size_]) {
+          ++size_;
+        }
+      }
+      std::fill(words_, words_ + word_shift, 0u);
+    }
+  }
+
+
+  // Multiplies by v in-place.
+  void MultiplyBy(uint32_t v) {
+    if (size_ == 0 || v == 1) {
+      return;
+    }
+    if (v == 0) {
+      SetToZero();
+      return;
+    }
+    const uint64_t factor = v;
+    uint64_t window = 0;
+    for (int i = 0; i < size_; ++i) {
+      window += factor * words_[i];
+      words_[i] = window & 0xffffffff;
+      window >>= 32;
+    }
+    // If carry bits remain and there's space for them, grow size_.
+    if (window && size_ < max_words) {
+      words_[size_] = window & 0xffffffff;
+      ++size_;
+    }
+  }
+
+  void MultiplyBy(uint64_t v) {
+    uint32_t words[2];
+    words[0] = static_cast<uint32_t>(v);
+    words[1] = static_cast<uint32_t>(v >> 32);
+    if (words[1] == 0) {
+      MultiplyBy(words[0]);
+    } else {
+      MultiplyBy(2, words);
+    }
+  }
+
+  // Multiplies in place by 5 to the power of n.  n must be non-negative.
+  void MultiplyByFiveToTheNth(int n) {
+    while (n >= kMaxSmallPowerOfFive) {
+      MultiplyBy(kFiveToNth[kMaxSmallPowerOfFive]);
+      n -= kMaxSmallPowerOfFive;
+    }
+    if (n > 0) {
+      MultiplyBy(kFiveToNth[n]);
+    }
+  }
+
+  // Multiplies in place by 10 to the power of n.  n must be non-negative.
+  void MultiplyByTenToTheNth(int n) {
+    if (n > kMaxSmallPowerOfTen) {
+      // For large n, raise to a power of 5, then shift left by the same amount.
+      // (10**n == 5**n * 2**n.)  This requires fewer multiplications overall.
+      MultiplyByFiveToTheNth(n);
+      ShiftLeft(n);
+    } else if (n > 0) {
+      // We can do this more quickly for very small N by using a single
+      // multiplication.
+      MultiplyBy(kTenToNth[n]);
+    }
+  }
+
+  // Returns the value of 5**n, for non-negative n.  This implementation uses
+  // a lookup table, and is faster then seeding a BigUnsigned with 1 and calling
+  // MultiplyByFiveToTheNth().
+  static BigUnsigned FiveToTheNth(int n);
+
+  // Multiplies by another BigUnsigned, in-place.
+  template <int M>
+  void MultiplyBy(const BigUnsigned<M>& other) {
+    MultiplyBy(other.size(), other.words());
+  }
+
+  void SetToZero() {
+    std::fill(words_, words_ + size_, 0u);
+    size_ = 0;
+  }
+
+  // Returns the value of the nth word of this BigUnsigned.  This is
+  // range-checked, and returns 0 on out-of-bounds accesses.
+  uint32_t GetWord(int index) const {
+    if (index < 0 || index >= size_) {
+      return 0;
+    }
+    return words_[index];
+  }
+
+  // Returns this integer as a decimal std::string.  This is not used in the decimal-
+  // to-binary conversion; it is intended to aid in testing.
+  std::string ToString() const;
+
+  int size() const { return size_; }
+  const uint32_t* words() const { return words_; }
+
+ private:
+  // Reads the number between [begin, end), possibly containing a decimal point,
+  // into this BigUnsigned.
+  //
+  // Callers are required to ensure [begin, end) contains a valid number, with
+  // one or more decimal digits and at most one decimal point.  This routine
+  // will behave unpredictably if these preconditions are not met.
+  //
+  // Only the first `significant_digits` digits are read.  Digits beyond this
+  // limit are "sticky": If the final significant digit is 0 or 5, and if any
+  // dropped digit is nonzero, then that final significant digit is adjusted up
+  // to 1 or 6.  This adjustment allows for precise rounding.
+  //
+  // Returns `exponent_adjustment`, a power-of-ten exponent adjustment to
+  // account for the decimal point and for dropped significant digits.  After
+  // this function returns,
+  //   actual_value_of_parsed_string ~= *this * 10**exponent_adjustment.
+  int ReadDigits(const char* begin, const char* end, int significant_digits);
+
+  // Performs a step of big integer multiplication.  This computes the full
+  // (64-bit-wide) values that should be added at the given index (step), and
+  // adds to that location in-place.
+  //
+  // Because our math all occurs in place, we must multiply starting from the
+  // highest word working downward.  (This is a bit more expensive due to the
+  // extra carries involved.)
+  //
+  // This must be called in steps, for each word to be calculated, starting from
+  // the high end and working down to 0.  The first value of `step` should be
+  //   `std::min(original_size + other.size_ - 2, max_words - 1)`.
+  // The reason for this expression is that multiplying the i'th word from one
+  // multiplicand and the j'th word of another multiplicand creates a
+  // two-word-wide value to be stored at the (i+j)'th element.  The highest
+  // word indices we will access are `original_size - 1` from this object, and
+  // `other.size_ - 1` from our operand.  Therefore,
+  // `original_size + other.size_ - 2` is the first step we should calculate,
+  // but limited on an upper bound by max_words.
+
+  // Working from high-to-low ensures that we do not overwrite the portions of
+  // the initial value of *this which are still needed for later steps.
+  //
+  // Once called with step == 0, *this contains the result of the
+  // multiplication.
+  //
+  // `original_size` is the size_ of *this before the first call to
+  // MultiplyStep().  `other_words` and `other_size` are the contents of our
+  // operand.  `step` is the step to perform, as described above.
+  void MultiplyStep(int original_size, const uint32_t* other_words,
+                    int other_size, int step);
+
+  void MultiplyBy(int other_size, const uint32_t* other_words) {
+    const int original_size = size_;
+    const int first_step =
+        (std::min)(original_size + other_size - 2, max_words - 1);
+    for (int step = first_step; step >= 0; --step) {
+      MultiplyStep(original_size, other_words, other_size, step);
+    }
+  }
+
+  // Adds a 32-bit value to the index'th word, with carry.
+  void AddWithCarry(int index, uint32_t value) {
+    if (value) {
+      while (index < max_words && value > 0) {
+        words_[index] += value;
+        // carry if we overflowed in this word:
+        if (value > words_[index]) {
+          value = 1;
+          ++index;
+        } else {
+          value = 0;
+        }
+      }
+      size_ = (std::min)(max_words, (std::max)(index + 1, size_));
+    }
+  }
+
+  void AddWithCarry(int index, uint64_t value) {
+    if (value && index < max_words) {
+      uint32_t high = value >> 32;
+      uint32_t low = value & 0xffffffff;
+      words_[index] += low;
+      if (words_[index] < low) {
+        ++high;
+        if (high == 0) {
+          // Carry from the low word caused our high word to overflow.
+          // Short circuit here to do the right thing.
+          AddWithCarry(index + 2, static_cast<uint32_t>(1));
+          return;
+        }
+      }
+      if (high > 0) {
+        AddWithCarry(index + 1, high);
+      } else {
+        // Normally 32-bit AddWithCarry() sets size_, but since we don't call
+        // it when `high` is 0, do it ourselves here.
+        size_ = (std::min)(max_words, (std::max)(index + 1, size_));
+      }
+    }
+  }
+
+  // Divide this in place by a constant divisor.  Returns the remainder of the
+  // division.
+  template <uint32_t divisor>
+  uint32_t DivMod() {
+    uint64_t accumulator = 0;
+    for (int i = size_ - 1; i >= 0; --i) {
+      accumulator <<= 32;
+      accumulator += words_[i];
+      // accumulator / divisor will never overflow an int32_t in this loop
+      words_[i] = static_cast<uint32_t>(accumulator / divisor);
+      accumulator = accumulator % divisor;
+    }
+    while (size_ > 0 && words_[size_ - 1] == 0) {
+      --size_;
+    }
+    return static_cast<uint32_t>(accumulator);
+  }
+
+  // The number of elements in words_ that may carry significant values.
+  // All elements beyond this point are 0.
+  //
+  // When size_ is 0, this BigUnsigned stores the value 0.
+  // When size_ is nonzero, is *not* guaranteed that words_[size_ - 1] is
+  // nonzero.  This can occur due to overflow truncation.
+  // In particular, x.size_ != y.size_ does *not* imply x != y.
+  int size_;
+  uint32_t words_[max_words];
+};
+
+// Compares two big integer instances.
+//
+// Returns -1 if lhs < rhs, 0 if lhs == rhs, and 1 if lhs > rhs.
+template <int N, int M>
+int Compare(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  int limit = (std::max)(lhs.size(), rhs.size());
+  for (int i = limit - 1; i >= 0; --i) {
+    const uint32_t lhs_word = lhs.GetWord(i);
+    const uint32_t rhs_word = rhs.GetWord(i);
+    if (lhs_word < rhs_word) {
+      return -1;
+    } else if (lhs_word > rhs_word) {
+      return 1;
+    }
+  }
+  return 0;
+}
+
+template <int N, int M>
+bool operator==(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  int limit = (std::max)(lhs.size(), rhs.size());
+  for (int i = 0; i < limit; ++i) {
+    if (lhs.GetWord(i) != rhs.GetWord(i)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+template <int N, int M>
+bool operator!=(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  return !(lhs == rhs);
+}
+
+template <int N, int M>
+bool operator<(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  return Compare(lhs, rhs) == -1;
+}
+
+template <int N, int M>
+bool operator>(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  return rhs < lhs;
+}
+template <int N, int M>
+bool operator<=(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  return !(rhs < lhs);
+}
+template <int N, int M>
+bool operator>=(const BigUnsigned<N>& lhs, const BigUnsigned<M>& rhs) {
+  return !(lhs < rhs);
+}
+
+// Output operator for BigUnsigned, for testing purposes only.
+template <int N>
+std::ostream& operator<<(std::ostream& os, const BigUnsigned<N>& num) {
+  return os << num.ToString();
+}
+
+// Explicit instantiation declarations for the sizes of BigUnsigned that we
+// are using.
+//
+// For now, the choices of 4 and 84 are arbitrary; 4 is a small value that is
+// still bigger than an int128, and 84 is a large value we will want to use
+// in the from_chars implementation.
+//
+// Comments justifying the use of 84 belong in the from_chars implementation,
+// and will be added in a follow-up CL.
+extern template class BigUnsigned<4>;
+extern template class BigUnsigned<84>;
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_CHARCONV_BIGINT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.cc
new file mode 100644
index 0000000..d9a57a7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.cc	
@@ -0,0 +1,504 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/charconv_parse.h"
+#include "absl/strings/charconv.h"
+
+#include <cassert>
+#include <cstdint>
+#include <limits>
+
+#include "absl/strings/internal/memutil.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+// ParseFloat<10> will read the first 19 significant digits of the mantissa.
+// This number was chosen for multiple reasons.
+//
+// (a) First, for whatever integer type we choose to represent the mantissa, we
+// want to choose the largest possible number of decimal digits for that integer
+// type.  We are using uint64_t, which can express any 19-digit unsigned
+// integer.
+//
+// (b) Second, we need to parse enough digits that the binary value of any
+// mantissa we capture has more bits of resolution than the mantissa
+// representation in the target float.  Our algorithm requires at least 3 bits
+// of headway, but 19 decimal digits give a little more than that.
+//
+// The following static assertions verify the above comments:
+constexpr int kDecimalMantissaDigitsMax = 19;
+
+static_assert(std::numeric_limits<uint64_t>::digits10 ==
+                  kDecimalMantissaDigitsMax,
+              "(a) above");
+
+// IEEE doubles, which we assume in Abseil, have 53 binary bits of mantissa.
+static_assert(std::numeric_limits<double>::is_iec559, "IEEE double assumed");
+static_assert(std::numeric_limits<double>::radix == 2, "IEEE double fact");
+static_assert(std::numeric_limits<double>::digits == 53, "IEEE double fact");
+
+// The lowest valued 19-digit decimal mantissa we can read still contains
+// sufficient information to reconstruct a binary mantissa.
+static_assert(1000000000000000000u > (uint64_t(1) << (53 + 3)), "(b) above");
+
+// ParseFloat<16> will read the first 15 significant digits of the mantissa.
+//
+// Because a base-16-to-base-2 conversion can be done exactly, we do not need
+// to maximize the number of scanned hex digits to improve our conversion.  What
+// is required is to scan two more bits than the mantissa can represent, so that
+// we always round correctly.
+//
+// (One extra bit does not suffice to perform correct rounding, since a number
+// exactly halfway between two representable floats has unique rounding rules,
+// so we need to differentiate between a "halfway between" number and a "closer
+// to the larger value" number.)
+constexpr int kHexadecimalMantissaDigitsMax = 15;
+
+// The minimum number of significant bits that will be read from
+// kHexadecimalMantissaDigitsMax hex digits.  We must subtract by three, since
+// the most significant digit can be a "1", which only contributes a single
+// significant bit.
+constexpr int kGuaranteedHexadecimalMantissaBitPrecision =
+    4 * kHexadecimalMantissaDigitsMax - 3;
+
+static_assert(kGuaranteedHexadecimalMantissaBitPrecision >
+                  std::numeric_limits<double>::digits + 2,
+              "kHexadecimalMantissaDigitsMax too small");
+
+// We also impose a limit on the number of significant digits we will read from
+// an exponent, to avoid having to deal with integer overflow.  We use 9 for
+// this purpose.
+//
+// If we read a 9 digit exponent, the end result of the conversion will
+// necessarily be infinity or zero, depending on the sign of the exponent.
+// Therefore we can just drop extra digits on the floor without any extra
+// logic.
+constexpr int kDecimalExponentDigitsMax = 9;
+static_assert(std::numeric_limits<int>::digits10 >= kDecimalExponentDigitsMax,
+              "int type too small");
+
+// To avoid incredibly large inputs causing integer overflow for our exponent,
+// we impose an arbitrary but very large limit on the number of significant
+// digits we will accept.  The implementation refuses to match a string with
+// more consecutive significant mantissa digits than this.
+constexpr int kDecimalDigitLimit = 50000000;
+
+// Corresponding limit for hexadecimal digit inputs.  This is one fourth the
+// amount of kDecimalDigitLimit, since each dropped hexadecimal digit requires
+// a binary exponent adjustment of 4.
+constexpr int kHexadecimalDigitLimit = kDecimalDigitLimit / 4;
+
+// The largest exponent we can read is 999999999 (per
+// kDecimalExponentDigitsMax), and the largest exponent adjustment we can get
+// from dropped mantissa digits is 2 * kDecimalDigitLimit, and the sum of these
+// comfortably fits in an integer.
+//
+// We count kDecimalDigitLimit twice because there are independent limits for
+// numbers before and after the decimal point.  (In the case where there are no
+// significant digits before the decimal point, there are independent limits for
+// post-decimal-point leading zeroes and for significant digits.)
+static_assert(999999999 + 2 * kDecimalDigitLimit <
+                  std::numeric_limits<int>::max(),
+              "int type too small");
+static_assert(999999999 + 2 * (4 * kHexadecimalDigitLimit) <
+                  std::numeric_limits<int>::max(),
+              "int type too small");
+
+// Returns true if the provided bitfield allows parsing an exponent value
+// (e.g., "1.5e100").
+bool AllowExponent(chars_format flags) {
+  bool fixed = (flags & chars_format::fixed) == chars_format::fixed;
+  bool scientific =
+      (flags & chars_format::scientific) == chars_format::scientific;
+  return scientific || !fixed;
+}
+
+// Returns true if the provided bitfield requires an exponent value be present.
+bool RequireExponent(chars_format flags) {
+  bool fixed = (flags & chars_format::fixed) == chars_format::fixed;
+  bool scientific =
+      (flags & chars_format::scientific) == chars_format::scientific;
+  return scientific && !fixed;
+}
+
+const int8_t kAsciiToInt[256] = {
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0,  1,  2,  3,  4,  5,  6,  7,  8,
+    9,  -1, -1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1};
+
+// Returns true if `ch` is a digit in the given base
+template <int base>
+bool IsDigit(char ch);
+
+// Converts a valid `ch` to its digit value in the given base.
+template <int base>
+unsigned ToDigit(char ch);
+
+// Returns true if `ch` is the exponent delimiter for the given base.
+template <int base>
+bool IsExponentCharacter(char ch);
+
+// Returns the maximum number of significant digits we will read for a float
+// in the given base.
+template <int base>
+constexpr int MantissaDigitsMax();
+
+// Returns the largest consecutive run of digits we will accept when parsing a
+// number in the given base.
+template <int base>
+constexpr int DigitLimit();
+
+// Returns the amount the exponent must be adjusted by for each dropped digit.
+// (For decimal this is 1, since the digits are in base 10 and the exponent base
+// is also 10, but for hexadecimal this is 4, since the digits are base 16 but
+// the exponent base is 2.)
+template <int base>
+constexpr int DigitMagnitude();
+
+template <>
+bool IsDigit<10>(char ch) {
+  return ch >= '0' && ch <= '9';
+}
+template <>
+bool IsDigit<16>(char ch) {
+  return kAsciiToInt[static_cast<unsigned char>(ch)] >= 0;
+}
+
+template <>
+unsigned ToDigit<10>(char ch) {
+  return ch - '0';
+}
+template <>
+unsigned ToDigit<16>(char ch) {
+  return kAsciiToInt[static_cast<unsigned char>(ch)];
+}
+
+template <>
+bool IsExponentCharacter<10>(char ch) {
+  return ch == 'e' || ch == 'E';
+}
+
+template <>
+bool IsExponentCharacter<16>(char ch) {
+  return ch == 'p' || ch == 'P';
+}
+
+template <>
+constexpr int MantissaDigitsMax<10>() {
+  return kDecimalMantissaDigitsMax;
+}
+template <>
+constexpr int MantissaDigitsMax<16>() {
+  return kHexadecimalMantissaDigitsMax;
+}
+
+template <>
+constexpr int DigitLimit<10>() {
+  return kDecimalDigitLimit;
+}
+template <>
+constexpr int DigitLimit<16>() {
+  return kHexadecimalDigitLimit;
+}
+
+template <>
+constexpr int DigitMagnitude<10>() {
+  return 1;
+}
+template <>
+constexpr int DigitMagnitude<16>() {
+  return 4;
+}
+
+// Reads decimal digits from [begin, end) into *out.  Returns the number of
+// digits consumed.
+//
+// After max_digits has been read, keeps consuming characters, but no longer
+// adjusts *out.  If a nonzero digit is dropped this way, *dropped_nonzero_digit
+// is set; otherwise, it is left unmodified.
+//
+// If no digits are matched, returns 0 and leaves *out unchanged.
+//
+// ConsumeDigits does not protect against overflow on *out; max_digits must
+// be chosen with respect to type T to avoid the possibility of overflow.
+template <int base, typename T>
+std::size_t ConsumeDigits(const char* begin, const char* end, int max_digits,
+                          T* out, bool* dropped_nonzero_digit) {
+  if (base == 10) {
+    assert(max_digits <= std::numeric_limits<T>::digits10);
+  } else if (base == 16) {
+    assert(max_digits * 4 <= std::numeric_limits<T>::digits);
+  }
+  const char* const original_begin = begin;
+
+  // Skip leading zeros, but only if *out is zero.
+  // They don't cause an overflow so we don't have to count them for
+  // `max_digits`.
+  while (!*out && end != begin && *begin == '0') ++begin;
+
+  T accumulator = *out;
+  const char* significant_digits_end =
+      (end - begin > max_digits) ? begin + max_digits : end;
+  while (begin < significant_digits_end && IsDigit<base>(*begin)) {
+    // Do not guard against *out overflow; max_digits was chosen to avoid this.
+    // Do assert against it, to detect problems in debug builds.
+    auto digit = static_cast<T>(ToDigit<base>(*begin));
+    assert(accumulator * base >= accumulator);
+    accumulator *= base;
+    assert(accumulator + digit >= accumulator);
+    accumulator += digit;
+    ++begin;
+  }
+  bool dropped_nonzero = false;
+  while (begin < end && IsDigit<base>(*begin)) {
+    dropped_nonzero = dropped_nonzero || (*begin != '0');
+    ++begin;
+  }
+  if (dropped_nonzero && dropped_nonzero_digit != nullptr) {
+    *dropped_nonzero_digit = true;
+  }
+  *out = accumulator;
+  return begin - original_begin;
+}
+
+// Returns true if `v` is one of the chars allowed inside parentheses following
+// a NaN.
+bool IsNanChar(char v) {
+  return (v == '_') || (v >= '0' && v <= '9') || (v >= 'a' && v <= 'z') ||
+         (v >= 'A' && v <= 'Z');
+}
+
+// Checks the range [begin, end) for a strtod()-formatted infinity or NaN.  If
+// one is found, sets `out` appropriately and returns true.
+bool ParseInfinityOrNan(const char* begin, const char* end,
+                        strings_internal::ParsedFloat* out) {
+  if (end - begin < 3) {
+    return false;
+  }
+  switch (*begin) {
+    case 'i':
+    case 'I': {
+      // An infinity std::string consists of the characters "inf" or "infinity",
+      // case insensitive.
+      if (strings_internal::memcasecmp(begin + 1, "nf", 2) != 0) {
+        return false;
+      }
+      out->type = strings_internal::FloatType::kInfinity;
+      if (end - begin >= 8 &&
+          strings_internal::memcasecmp(begin + 3, "inity", 5) == 0) {
+        out->end = begin + 8;
+      } else {
+        out->end = begin + 3;
+      }
+      return true;
+    }
+    case 'n':
+    case 'N': {
+      // A NaN consists of the characters "nan", case insensitive, optionally
+      // followed by a parenthesized sequence of zero or more alphanumeric
+      // characters and/or underscores.
+      if (strings_internal::memcasecmp(begin + 1, "an", 2) != 0) {
+        return false;
+      }
+      out->type = strings_internal::FloatType::kNan;
+      out->end = begin + 3;
+      // NaN is allowed to be followed by a parenthesized std::string, consisting of
+      // only the characters [a-zA-Z0-9_].  Match that if it's present.
+      begin += 3;
+      if (begin < end && *begin == '(') {
+        const char* nan_begin = begin + 1;
+        while (nan_begin < end && IsNanChar(*nan_begin)) {
+          ++nan_begin;
+        }
+        if (nan_begin < end && *nan_begin == ')') {
+          // We found an extra NaN specifier range
+          out->subrange_begin = begin + 1;
+          out->subrange_end = nan_begin;
+          out->end = nan_begin + 1;
+        }
+      }
+      return true;
+    }
+    default:
+      return false;
+  }
+}
+}  // namespace
+
+namespace strings_internal {
+
+template <int base>
+strings_internal::ParsedFloat ParseFloat(const char* begin, const char* end,
+                                         chars_format format_flags) {
+  strings_internal::ParsedFloat result;
+
+  // Exit early if we're given an empty range.
+  if (begin == end) return result;
+
+  // Handle the infinity and NaN cases.
+  if (ParseInfinityOrNan(begin, end, &result)) {
+    return result;
+  }
+
+  const char* const mantissa_begin = begin;
+  while (begin < end && *begin == '0') {
+    ++begin;  // skip leading zeros
+  }
+  uint64_t mantissa = 0;
+
+  int exponent_adjustment = 0;
+  bool mantissa_is_inexact = false;
+  std::size_t pre_decimal_digits = ConsumeDigits<base>(
+      begin, end, MantissaDigitsMax<base>(), &mantissa, &mantissa_is_inexact);
+  begin += pre_decimal_digits;
+  int digits_left;
+  if (pre_decimal_digits >= DigitLimit<base>()) {
+    // refuse to parse pathological inputs
+    return result;
+  } else if (pre_decimal_digits > MantissaDigitsMax<base>()) {
+    // We dropped some non-fraction digits on the floor.  Adjust our exponent
+    // to compensate.
+    exponent_adjustment =
+        static_cast<int>(pre_decimal_digits - MantissaDigitsMax<base>());
+    digits_left = 0;
+  } else {
+    digits_left =
+        static_cast<int>(MantissaDigitsMax<base>() - pre_decimal_digits);
+  }
+  if (begin < end && *begin == '.') {
+    ++begin;
+    if (mantissa == 0) {
+      // If we haven't seen any nonzero digits yet, keep skipping zeros.  We
+      // have to adjust the exponent to reflect the changed place value.
+      const char* begin_zeros = begin;
+      while (begin < end && *begin == '0') {
+        ++begin;
+      }
+      std::size_t zeros_skipped = begin - begin_zeros;
+      if (zeros_skipped >= DigitLimit<base>()) {
+        // refuse to parse pathological inputs
+        return result;
+      }
+      exponent_adjustment -= static_cast<int>(zeros_skipped);
+    }
+    std::size_t post_decimal_digits = ConsumeDigits<base>(
+        begin, end, digits_left, &mantissa, &mantissa_is_inexact);
+    begin += post_decimal_digits;
+
+    // Since `mantissa` is an integer, each significant digit we read after
+    // the decimal point requires an adjustment to the exponent. "1.23e0" will
+    // be stored as `mantissa` == 123 and `exponent` == -2 (that is,
+    // "123e-2").
+    if (post_decimal_digits >= DigitLimit<base>()) {
+      // refuse to parse pathological inputs
+      return result;
+    } else if (post_decimal_digits > digits_left) {
+      exponent_adjustment -= digits_left;
+    } else {
+      exponent_adjustment -= post_decimal_digits;
+    }
+  }
+  // If we've found no mantissa whatsoever, this isn't a number.
+  if (mantissa_begin == begin) {
+    return result;
+  }
+  // A bare "." doesn't count as a mantissa either.
+  if (begin - mantissa_begin == 1 && *mantissa_begin == '.') {
+    return result;
+  }
+
+  if (mantissa_is_inexact) {
+    // We dropped significant digits on the floor.  Handle this appropriately.
+    if (base == 10) {
+      // If we truncated significant decimal digits, store the full range of the
+      // mantissa for future big integer math for exact rounding.
+      result.subrange_begin = mantissa_begin;
+      result.subrange_end = begin;
+    } else if (base == 16) {
+      // If we truncated hex digits, reflect this fact by setting the low
+      // ("sticky") bit.  This allows for correct rounding in all cases.
+      mantissa |= 1;
+    }
+  }
+  result.mantissa = mantissa;
+
+  const char* const exponent_begin = begin;
+  result.literal_exponent = 0;
+  bool found_exponent = false;
+  if (AllowExponent(format_flags) && begin < end &&
+      IsExponentCharacter<base>(*begin)) {
+    bool negative_exponent = false;
+    ++begin;
+    if (begin < end && *begin == '-') {
+      negative_exponent = true;
+      ++begin;
+    } else if (begin < end && *begin == '+') {
+      ++begin;
+    }
+    const char* const exponent_digits_begin = begin;
+    // Exponent is always expressed in decimal, even for hexadecimal floats.
+    begin += ConsumeDigits<10>(begin, end, kDecimalExponentDigitsMax,
+                               &result.literal_exponent, nullptr);
+    if (begin == exponent_digits_begin) {
+      // there were no digits where we expected an exponent.  We failed to read
+      // an exponent and should not consume the 'e' after all.  Rewind 'begin'.
+      found_exponent = false;
+      begin = exponent_begin;
+    } else {
+      found_exponent = true;
+      if (negative_exponent) {
+        result.literal_exponent = -result.literal_exponent;
+      }
+    }
+  }
+
+  if (!found_exponent && RequireExponent(format_flags)) {
+    // Provided flags required an exponent, but none was found.  This results
+    // in a failure to scan.
+    return result;
+  }
+
+  // Success!
+  result.type = strings_internal::FloatType::kNumber;
+  if (result.mantissa > 0) {
+    result.exponent = result.literal_exponent +
+                      (DigitMagnitude<base>() * exponent_adjustment);
+  } else {
+    result.exponent = 0;
+  }
+  result.end = begin;
+  return result;
+}
+
+template ParsedFloat ParseFloat<10>(const char* begin, const char* end,
+                                    chars_format format_flags);
+template ParsedFloat ParseFloat<16>(const char* begin, const char* end,
+                                    chars_format format_flags);
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.h
new file mode 100644
index 0000000..505998b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/charconv_parse.h	
@@ -0,0 +1,99 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_CHARCONV_PARSE_H_
+#define ABSL_STRINGS_INTERNAL_CHARCONV_PARSE_H_
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+#include "absl/strings/charconv.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// Enum indicating whether a parsed float is a number or special value.
+enum class FloatType { kNumber, kInfinity, kNan };
+
+// The decomposed parts of a parsed `float` or `double`.
+struct ParsedFloat {
+  // Representation of the parsed mantissa, with the decimal point adjusted to
+  // make it an integer.
+  //
+  // During decimal scanning, this contains 19 significant digits worth of
+  // mantissa value.  If digits beyond this point are found, they
+  // are truncated, and if any of these dropped digits are nonzero, then
+  // `mantissa` is inexact, and the full mantissa is stored in [subrange_begin,
+  // subrange_end).
+  //
+  // During hexadecimal scanning, this contains 15 significant hex digits worth
+  // of mantissa value.  Digits beyond this point are sticky -- they are
+  // truncated, but if any dropped digits are nonzero, the low bit of mantissa
+  // will be set.  (This allows for precise rounding, and avoids the need
+  // to store the full mantissa in [subrange_begin, subrange_end).)
+  uint64_t mantissa = 0;
+
+  // Floating point expontent.  This reflects any decimal point adjustments and
+  // any truncated digits from the mantissa.  The absolute value of the parsed
+  // number is represented by mantissa * (base ** exponent), where base==10 for
+  // decimal floats, and base==2 for hexadecimal floats.
+  int exponent = 0;
+
+  // The literal exponent value scanned from the input, or 0 if none was
+  // present.  This does not reflect any adjustments applied to mantissa.
+  int literal_exponent = 0;
+
+  // The type of number scanned.
+  FloatType type = FloatType::kNumber;
+
+  // When non-null, [subrange_begin, subrange_end) marks a range of characters
+  // that require further processing.  The meaning is dependent on float type.
+  // If type == kNumber and this is set, this is a "wide input": the input
+  // mantissa contained more than 19 digits.  The range contains the full
+  // mantissa.  It plus `literal_exponent` need to be examined to find the best
+  // floating point match.
+  // If type == kNan and this is set, the range marks the contents of a
+  // matched parenthesized character region after the NaN.
+  const char* subrange_begin = nullptr;
+  const char* subrange_end = nullptr;
+
+  // One-past-the-end of the successfully parsed region, or nullptr if no
+  // matching pattern was found.
+  const char* end = nullptr;
+};
+
+// Read the floating point number in the provided range, and populate
+// ParsedFloat accordingly.
+//
+// format_flags is a bitmask value specifying what patterns this API will match.
+// `scientific` and `fixed`  are honored per std::from_chars rules
+// ([utility.from.chars], C++17): if exactly one of these bits is set, then an
+// exponent is required, or dislallowed, respectively.
+//
+// Template parameter `base` must be either 10 or 16.  For base 16, a "0x" is
+// *not* consumed.  The `hex` bit from format_flags is ignored by ParseFloat.
+template <int base>
+ParsedFloat ParseFloat(const char* begin, const char* end,
+                       absl::chars_format format_flags);
+
+extern template ParsedFloat ParseFloat<10>(const char* begin, const char* end,
+                                           absl::chars_format format_flags);
+extern template ParsedFloat ParseFloat<16>(const char* begin, const char* end,
+                                           absl::chars_format format_flags);
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+#endif  // ABSL_STRINGS_INTERNAL_CHARCONV_PARSE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.cc
new file mode 100644
index 0000000..c527128
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.cc	
@@ -0,0 +1,180 @@
+// Copyright 2020 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/escaping.h"
+
+#include "absl/base/internal/endian.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+const char kBase64Chars[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+size_t CalculateBase64EscapedLenInternal(size_t input_len, bool do_padding) {
+  // Base64 encodes three bytes of input at a time. If the input is not
+  // divisible by three, we pad as appropriate.
+  //
+  // (from https://tools.ietf.org/html/rfc3548)
+  // Special processing is performed if fewer than 24 bits are available
+  // at the end of the data being encoded.  A full encoding quantum is
+  // always completed at the end of a quantity.  When fewer than 24 input
+  // bits are available in an input group, zero bits are added (on the
+  // right) to form an integral number of 6-bit groups.  Padding at the
+  // end of the data is performed using the '=' character.  Since all base
+  // 64 input is an integral number of octets, only the following cases
+  // can arise:
+
+  // Base64 encodes each three bytes of input into four bytes of output.
+  size_t len = (input_len / 3) * 4;
+
+  if (input_len % 3 == 0) {
+    // (from https://tools.ietf.org/html/rfc3548)
+    // (1) the final quantum of encoding input is an integral multiple of 24
+    // bits; here, the final unit of encoded output will be an integral
+    // multiple of 4 characters with no "=" padding,
+  } else if (input_len % 3 == 1) {
+    // (from https://tools.ietf.org/html/rfc3548)
+    // (2) the final quantum of encoding input is exactly 8 bits; here, the
+    // final unit of encoded output will be two characters followed by two
+    // "=" padding characters, or
+    len += 2;
+    if (do_padding) {
+      len += 2;
+    }
+  } else {  // (input_len % 3 == 2)
+    // (from https://tools.ietf.org/html/rfc3548)
+    // (3) the final quantum of encoding input is exactly 16 bits; here, the
+    // final unit of encoded output will be three characters followed by one
+    // "=" padding character.
+    len += 3;
+    if (do_padding) {
+      len += 1;
+    }
+  }
+
+  assert(len >= input_len);  // make sure we didn't overflow
+  return len;
+}
+
+size_t Base64EscapeInternal(const unsigned char* src, size_t szsrc, char* dest,
+                            size_t szdest, const char* base64,
+                            bool do_padding) {
+  static const char kPad64 = '=';
+
+  if (szsrc * 4 > szdest * 3) return 0;
+
+  char* cur_dest = dest;
+  const unsigned char* cur_src = src;
+
+  char* const limit_dest = dest + szdest;
+  const unsigned char* const limit_src = src + szsrc;
+
+  // Three bytes of data encodes to four characters of cyphertext.
+  // So we can pump through three-byte chunks atomically.
+  if (szsrc >= 3) {                    // "limit_src - 3" is UB if szsrc < 3.
+    while (cur_src < limit_src - 3) {  // While we have >= 32 bits.
+      uint32_t in = absl::big_endian::Load32(cur_src) >> 8;
+
+      cur_dest[0] = base64[in >> 18];
+      in &= 0x3FFFF;
+      cur_dest[1] = base64[in >> 12];
+      in &= 0xFFF;
+      cur_dest[2] = base64[in >> 6];
+      in &= 0x3F;
+      cur_dest[3] = base64[in];
+
+      cur_dest += 4;
+      cur_src += 3;
+    }
+  }
+  // To save time, we didn't update szdest or szsrc in the loop.  So do it now.
+  szdest = limit_dest - cur_dest;
+  szsrc = limit_src - cur_src;
+
+  /* now deal with the tail (<=3 bytes) */
+  switch (szsrc) {
+    case 0:
+      // Nothing left; nothing more to do.
+      break;
+    case 1: {
+      // One byte left: this encodes to two characters, and (optionally)
+      // two pad characters to round out the four-character cypherblock.
+      if (szdest < 2) return 0;
+      uint32_t in = cur_src[0];
+      cur_dest[0] = base64[in >> 2];
+      in &= 0x3;
+      cur_dest[1] = base64[in << 4];
+      cur_dest += 2;
+      szdest -= 2;
+      if (do_padding) {
+        if (szdest < 2) return 0;
+        cur_dest[0] = kPad64;
+        cur_dest[1] = kPad64;
+        cur_dest += 2;
+        szdest -= 2;
+      }
+      break;
+    }
+    case 2: {
+      // Two bytes left: this encodes to three characters, and (optionally)
+      // one pad character to round out the four-character cypherblock.
+      if (szdest < 3) return 0;
+      uint32_t in = absl::big_endian::Load16(cur_src);
+      cur_dest[0] = base64[in >> 10];
+      in &= 0x3FF;
+      cur_dest[1] = base64[in >> 4];
+      in &= 0x00F;
+      cur_dest[2] = base64[in << 2];
+      cur_dest += 3;
+      szdest -= 3;
+      if (do_padding) {
+        if (szdest < 1) return 0;
+        cur_dest[0] = kPad64;
+        cur_dest += 1;
+        szdest -= 1;
+      }
+      break;
+    }
+    case 3: {
+      // Three bytes left: same as in the big loop above.  We can't do this in
+      // the loop because the loop above always reads 4 bytes, and the fourth
+      // byte is past the end of the input.
+      if (szdest < 4) return 0;
+      uint32_t in = (cur_src[0] << 16) + absl::big_endian::Load16(cur_src + 1);
+      cur_dest[0] = base64[in >> 18];
+      in &= 0x3FFFF;
+      cur_dest[1] = base64[in >> 12];
+      in &= 0xFFF;
+      cur_dest[2] = base64[in >> 6];
+      in &= 0x3F;
+      cur_dest[3] = base64[in];
+      cur_dest += 4;
+      szdest -= 4;
+      break;
+    }
+    default:
+      // Should not be reached: blocks of 4 bytes are handled
+      // in the while loop before this switch statement.
+      ABSL_RAW_LOG(FATAL, "Logic problem? szsrc = %zu", szsrc);
+      break;
+  }
+  return (cur_dest - dest);
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.h
new file mode 100644
index 0000000..6a9ce60
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/escaping.h	
@@ -0,0 +1,58 @@
+// Copyright 2020 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_ESCAPING_H_
+#define ABSL_STRINGS_INTERNAL_ESCAPING_H_
+
+#include <cassert>
+
+#include "absl/strings/internal/resize_uninitialized.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+ABSL_CONST_INIT extern const char kBase64Chars[];
+
+// Calculates how long a string will be when it is base64 encoded given its
+// length and whether or not the result should be padded.
+size_t CalculateBase64EscapedLenInternal(size_t input_len, bool do_padding);
+
+// Base64-encodes `src` using the alphabet provided in `base64` and writes the
+// result to `dest`. If `do_padding` is true, `dest` is padded with '=' chars
+// until its length is a multiple of 3. Returns the length of `dest`.
+size_t Base64EscapeInternal(const unsigned char* src, size_t szsrc, char* dest,
+                            size_t szdest, const char* base64, bool do_padding);
+
+// Base64-encodes `src` using the alphabet provided in `base64` and writes the
+// result to `dest`. If `do_padding` is true, `dest` is padded with '=' chars
+// until its length is a multiple of 3.
+template <typename String>
+void Base64EscapeInternal(const unsigned char* src, size_t szsrc, String* dest,
+                          bool do_padding, const char* base64_chars) {
+  const size_t calc_escaped_size =
+      CalculateBase64EscapedLenInternal(szsrc, do_padding);
+  STLStringResizeUninitialized(dest, calc_escaped_size);
+
+  const size_t escaped_len = Base64EscapeInternal(
+      src, szsrc, &(*dest)[0], dest->size(), base64_chars, do_padding);
+  assert(calc_escaped_size == escaped_len);
+  dest->erase(escaped_len);
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_ESCAPING_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.cc
new file mode 100644
index 0000000..2519c68
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.cc	
@@ -0,0 +1,112 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/memutil.h"
+
+#include <cstdlib>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+int memcasecmp(const char* s1, const char* s2, size_t len) {
+  const unsigned char* us1 = reinterpret_cast<const unsigned char*>(s1);
+  const unsigned char* us2 = reinterpret_cast<const unsigned char*>(s2);
+
+  for (size_t i = 0; i < len; i++) {
+    const int diff =
+        int{static_cast<unsigned char>(absl::ascii_tolower(us1[i]))} -
+        int{static_cast<unsigned char>(absl::ascii_tolower(us2[i]))};
+    if (diff != 0) return diff;
+  }
+  return 0;
+}
+
+char* memdup(const char* s, size_t slen) {
+  void* copy;
+  if ((copy = malloc(slen)) == nullptr) return nullptr;
+  memcpy(copy, s, slen);
+  return reinterpret_cast<char*>(copy);
+}
+
+char* memrchr(const char* s, int c, size_t slen) {
+  for (const char* e = s + slen - 1; e >= s; e--) {
+    if (*e == c) return const_cast<char*>(e);
+  }
+  return nullptr;
+}
+
+size_t memspn(const char* s, size_t slen, const char* accept) {
+  const char* p = s;
+  const char* spanp;
+  char c, sc;
+
+cont:
+  c = *p++;
+  if (slen-- == 0) return p - 1 - s;
+  for (spanp = accept; (sc = *spanp++) != '\0';)
+    if (sc == c) goto cont;
+  return p - 1 - s;
+}
+
+size_t memcspn(const char* s, size_t slen, const char* reject) {
+  const char* p = s;
+  const char* spanp;
+  char c, sc;
+
+  while (slen-- != 0) {
+    c = *p++;
+    for (spanp = reject; (sc = *spanp++) != '\0';)
+      if (sc == c) return p - 1 - s;
+  }
+  return p - s;
+}
+
+char* mempbrk(const char* s, size_t slen, const char* accept) {
+  const char* scanp;
+  int sc;
+
+  for (; slen; ++s, --slen) {
+    for (scanp = accept; (sc = *scanp++) != '\0';)
+      if (sc == *s) return const_cast<char*>(s);
+  }
+  return nullptr;
+}
+
+// This is significantly faster for case-sensitive matches with very
+// few possible matches.  See unit test for benchmarks.
+const char* memmatch(const char* phaystack, size_t haylen, const char* pneedle,
+                     size_t neelen) {
+  if (0 == neelen) {
+    return phaystack;  // even if haylen is 0
+  }
+  if (haylen < neelen) return nullptr;
+
+  const char* match;
+  const char* hayend = phaystack + haylen - neelen + 1;
+  // A static cast is used here to work around the fact that memchr returns
+  // a void* on Posix-compliant systems and const void* on Windows.
+  while ((match = static_cast<const char*>(
+              memchr(phaystack, pneedle[0], hayend - phaystack)))) {
+    if (memcmp(match, pneedle, neelen) == 0)
+      return match;
+    else
+      phaystack = match + 1;
+  }
+  return nullptr;
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.h
new file mode 100644
index 0000000..9ad0535
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/memutil.h	
@@ -0,0 +1,148 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// These routines provide mem versions of standard C string routines,
+// such as strpbrk.  They function exactly the same as the str versions,
+// so if you wonder what they are, replace the word "mem" by
+// "str" and check out the man page.  I could return void*, as the
+// strutil.h mem*() routines tend to do, but I return char* instead
+// since this is by far the most common way these functions are called.
+//
+// The difference between the mem and str versions is the mem version
+// takes a pointer and a length, rather than a '\0'-terminated string.
+// The memcase* routines defined here assume the locale is "C"
+// (they use absl::ascii_tolower instead of tolower).
+//
+// These routines are based on the BSD library.
+//
+// Here's a list of routines from string.h, and their mem analogues.
+// Functions in lowercase are defined in string.h; those in UPPERCASE
+// are defined here:
+//
+// strlen                  --
+// strcat strncat          MEMCAT
+// strcpy strncpy          memcpy
+// --                      memccpy   (very cool function, btw)
+// --                      memmove
+// --                      memset
+// strcmp strncmp          memcmp
+// strcasecmp strncasecmp  MEMCASECMP
+// strchr                  memchr
+// strcoll                 --
+// strxfrm                 --
+// strdup strndup          MEMDUP
+// strrchr                 MEMRCHR
+// strspn                  MEMSPN
+// strcspn                 MEMCSPN
+// strpbrk                 MEMPBRK
+// strstr                  MEMSTR MEMMEM
+// (g)strcasestr           MEMCASESTR MEMCASEMEM
+// strtok                  --
+// strprefix               MEMPREFIX      (strprefix is from strutil.h)
+// strcaseprefix           MEMCASEPREFIX  (strcaseprefix is from strutil.h)
+// strsuffix               MEMSUFFIX      (strsuffix is from strutil.h)
+// strcasesuffix           MEMCASESUFFIX  (strcasesuffix is from strutil.h)
+// --                      MEMIS
+// --                      MEMCASEIS
+// strcount                MEMCOUNT       (strcount is from strutil.h)
+
+#ifndef ABSL_STRINGS_INTERNAL_MEMUTIL_H_
+#define ABSL_STRINGS_INTERNAL_MEMUTIL_H_
+
+#include <cstddef>
+#include <cstring>
+
+#include "absl/base/port.h"  // disable some warnings on Windows
+#include "absl/strings/ascii.h"  // for absl::ascii_tolower
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+inline char* memcat(char* dest, size_t destlen, const char* src,
+                    size_t srclen) {
+  return reinterpret_cast<char*>(memcpy(dest + destlen, src, srclen));
+}
+
+int memcasecmp(const char* s1, const char* s2, size_t len);
+char* memdup(const char* s, size_t slen);
+char* memrchr(const char* s, int c, size_t slen);
+size_t memspn(const char* s, size_t slen, const char* accept);
+size_t memcspn(const char* s, size_t slen, const char* reject);
+char* mempbrk(const char* s, size_t slen, const char* accept);
+
+// This is for internal use only.  Don't call this directly
+template <bool case_sensitive>
+const char* int_memmatch(const char* haystack, size_t haylen,
+                         const char* needle, size_t neelen) {
+  if (0 == neelen) {
+    return haystack;  // even if haylen is 0
+  }
+  const char* hayend = haystack + haylen;
+  const char* needlestart = needle;
+  const char* needleend = needlestart + neelen;
+
+  for (; haystack < hayend; ++haystack) {
+    char hay = case_sensitive
+                   ? *haystack
+                   : absl::ascii_tolower(static_cast<unsigned char>(*haystack));
+    char nee = case_sensitive
+                   ? *needle
+                   : absl::ascii_tolower(static_cast<unsigned char>(*needle));
+    if (hay == nee) {
+      if (++needle == needleend) {
+        return haystack + 1 - neelen;
+      }
+    } else if (needle != needlestart) {
+      // must back up haystack in case a prefix matched (find "aab" in "aaab")
+      haystack -= needle - needlestart;  // for loop will advance one more
+      needle = needlestart;
+    }
+  }
+  return nullptr;
+}
+
+// These are the guys you can call directly
+inline const char* memstr(const char* phaystack, size_t haylen,
+                          const char* pneedle) {
+  return int_memmatch<true>(phaystack, haylen, pneedle, strlen(pneedle));
+}
+
+inline const char* memcasestr(const char* phaystack, size_t haylen,
+                              const char* pneedle) {
+  return int_memmatch<false>(phaystack, haylen, pneedle, strlen(pneedle));
+}
+
+inline const char* memmem(const char* phaystack, size_t haylen,
+                          const char* pneedle, size_t needlelen) {
+  return int_memmatch<true>(phaystack, haylen, pneedle, needlelen);
+}
+
+inline const char* memcasemem(const char* phaystack, size_t haylen,
+                              const char* pneedle, size_t needlelen) {
+  return int_memmatch<false>(phaystack, haylen, pneedle, needlelen);
+}
+
+// This is significantly faster for case-sensitive matches with very
+// few possible matches.  See unit test for benchmarks.
+const char* memmatch(const char* phaystack, size_t haylen, const char* pneedle,
+                     size_t neelen);
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_MEMUTIL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.cc
new file mode 100644
index 0000000..05324c7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.cc	
@@ -0,0 +1,36 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/ostringstream.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+OStringStream::Buf::int_type OStringStream::overflow(int c) {
+  assert(s_);
+  if (!Buf::traits_type::eq_int_type(c, Buf::traits_type::eof()))
+    s_->push_back(static_cast<char>(c));
+  return 1;
+}
+
+std::streamsize OStringStream::xsputn(const char* s, std::streamsize n) {
+  assert(s_);
+  s_->append(s, n);
+  return n;
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.h
new file mode 100644
index 0000000..d25d604
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/ostringstream.h	
@@ -0,0 +1,89 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_
+#define ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_
+
+#include <cassert>
+#include <ostream>
+#include <streambuf>
+#include <string>
+
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// The same as std::ostringstream but appends to a user-specified std::string,
+// and is faster. It is ~70% faster to create, ~50% faster to write to, and
+// completely free to extract the result std::string.
+//
+//   std::string s;
+//   OStringStream strm(&s);
+//   strm << 42 << ' ' << 3.14;  // appends to `s`
+//
+// The stream object doesn't have to be named. Starting from C++11 operator<<
+// works with rvalues of std::ostream.
+//
+//   std::string s;
+//   OStringStream(&s) << 42 << ' ' << 3.14;  // appends to `s`
+//
+// OStringStream is faster to create than std::ostringstream but it's still
+// relatively slow. Avoid creating multiple streams where a single stream will
+// do.
+//
+// Creates unnecessary instances of OStringStream: slow.
+//
+//   std::string s;
+//   OStringStream(&s) << 42;
+//   OStringStream(&s) << ' ';
+//   OStringStream(&s) << 3.14;
+//
+// Creates a single instance of OStringStream and reuses it: fast.
+//
+//   std::string s;
+//   OStringStream strm(&s);
+//   strm << 42;
+//   strm << ' ';
+//   strm << 3.14;
+//
+// Note: flush() has no effect. No reason to call it.
+class OStringStream : private std::basic_streambuf<char>, public std::ostream {
+ public:
+  // The argument can be null, in which case you'll need to call str(p) with a
+  // non-null argument before you can write to the stream.
+  //
+  // The destructor of OStringStream doesn't use the std::string. It's OK to
+  // destroy the std::string before the stream.
+  explicit OStringStream(std::string* s) : std::ostream(this), s_(s) {}
+
+  std::string* str() { return s_; }
+  const std::string* str() const { return s_; }
+  void str(std::string* s) { s_ = s; }
+
+ private:
+  using Buf = std::basic_streambuf<char>;
+
+  Buf::int_type overflow(int c) override;
+  std::streamsize xsputn(const char* s, std::streamsize n) override;
+
+  std::string* s_;
+};
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_OSTRINGSTREAM_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/resize_uninitialized.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/resize_uninitialized.h
new file mode 100644
index 0000000..e42628e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/resize_uninitialized.h	
@@ -0,0 +1,73 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_
+#define ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_
+
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"  //  for void_t
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// Is a subclass of true_type or false_type, depending on whether or not
+// T has a __resize_default_init member.
+template <typename string_type, typename = void>
+struct ResizeUninitializedTraits {
+  using HasMember = std::false_type;
+  static void Resize(string_type* s, size_t new_size) { s->resize(new_size); }
+};
+
+// __resize_default_init is provided by libc++ >= 8.0
+template <typename string_type>
+struct ResizeUninitializedTraits<
+    string_type, absl::void_t<decltype(std::declval<string_type&>()
+                                           .__resize_default_init(237))> > {
+  using HasMember = std::true_type;
+  static void Resize(string_type* s, size_t new_size) {
+    s->__resize_default_init(new_size);
+  }
+};
+
+// Returns true if the std::string implementation supports a resize where
+// the new characters added to the std::string are left untouched.
+//
+// (A better name might be "STLStringSupportsUninitializedResize", alluding to
+// the previous function.)
+template <typename string_type>
+inline constexpr bool STLStringSupportsNontrashingResize(string_type*) {
+  return ResizeUninitializedTraits<string_type>::HasMember::value;
+}
+
+// Like str->resize(new_size), except any new characters added to "*str" as a
+// result of resizing may be left uninitialized, rather than being filled with
+// '0' bytes. Typically used when code is then going to overwrite the backing
+// store of the std::string with known data.
+template <typename string_type, typename = void>
+inline void STLStringResizeUninitialized(string_type* s, size_t new_size) {
+  ResizeUninitializedTraits<string_type>::Resize(s, new_size);
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_RESIZE_UNINITIALIZED_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/stl_type_traits.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/stl_type_traits.h
new file mode 100644
index 0000000..6035ca4
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/stl_type_traits.h	
@@ -0,0 +1,248 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// Thie file provides the IsStrictlyBaseOfAndConvertibleToSTLContainer type
+// trait metafunction to assist in working with the _GLIBCXX_DEBUG debug
+// wrappers of STL containers.
+//
+// DO NOT INCLUDE THIS FILE DIRECTLY. Use this file by including
+// absl/strings/str_split.h.
+//
+// IWYU pragma: private, include "absl/strings/str_split.h"
+
+#ifndef ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_
+#define ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_
+
+#include <array>
+#include <bitset>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <type_traits>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+template <typename C, template <typename...> class T>
+struct IsSpecializationImpl : std::false_type {};
+template <template <typename...> class T, typename... Args>
+struct IsSpecializationImpl<T<Args...>, T> : std::true_type {};
+template <typename C, template <typename...> class T>
+using IsSpecialization = IsSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsArrayImpl<A<T, N>> : std::is_same<A<T, N>, std::array<T, N>> {};
+template <typename C>
+using IsArray = IsArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsBitsetImpl<B<N>> : std::is_same<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsBitset = IsBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsSTLContainer
+    : absl::disjunction<
+          IsArray<C>, IsBitset<C>, IsSpecialization<C, std::deque>,
+          IsSpecialization<C, std::forward_list>,
+          IsSpecialization<C, std::list>, IsSpecialization<C, std::map>,
+          IsSpecialization<C, std::multimap>, IsSpecialization<C, std::set>,
+          IsSpecialization<C, std::multiset>,
+          IsSpecialization<C, std::unordered_map>,
+          IsSpecialization<C, std::unordered_multimap>,
+          IsSpecialization<C, std::unordered_set>,
+          IsSpecialization<C, std::unordered_multiset>,
+          IsSpecialization<C, std::vector>> {};
+
+template <typename C, template <typename...> class T, typename = void>
+struct IsBaseOfSpecializationImpl : std::false_type {};
+// IsBaseOfSpecializationImpl needs multiple partial specializations to SFINAE
+// on the existence of container dependent types and plug them into the STL
+// template.
+template <typename C, template <typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T, absl::void_t<typename C::value_type, typename C::allocator_type>>
+    : std::is_base_of<C,
+                      T<typename C::value_type, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::key_compare,
+                 typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::key_compare,
+                           typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::key_compare, typename C::allocator_type>>
+    : std::is_base_of<C,
+                      T<typename C::key_type, typename C::mapped_type,
+                        typename C::key_compare, typename C::allocator_type>> {
+};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::hasher,
+                 typename C::key_equal, typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::hasher,
+                           typename C::key_equal, typename C::allocator_type>> {
+};
+template <typename C,
+          template <typename, typename, typename, typename, typename> class T>
+struct IsBaseOfSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::hasher, typename C::key_equal,
+                 typename C::allocator_type>>
+    : std::is_base_of<C, T<typename C::key_type, typename C::mapped_type,
+                           typename C::hasher, typename C::key_equal,
+                           typename C::allocator_type>> {};
+template <typename C, template <typename...> class T>
+using IsBaseOfSpecialization = IsBaseOfSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsBaseOfArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsBaseOfArrayImpl<A<T, N>> : std::is_base_of<A<T, N>, std::array<T, N>> {
+};
+template <typename C>
+using IsBaseOfArray = IsBaseOfArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBaseOfBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsBaseOfBitsetImpl<B<N>> : std::is_base_of<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsBaseOfBitset = IsBaseOfBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsBaseOfSTLContainer
+    : absl::disjunction<IsBaseOfArray<C>, IsBaseOfBitset<C>,
+                        IsBaseOfSpecialization<C, std::deque>,
+                        IsBaseOfSpecialization<C, std::forward_list>,
+                        IsBaseOfSpecialization<C, std::list>,
+                        IsBaseOfSpecialization<C, std::map>,
+                        IsBaseOfSpecialization<C, std::multimap>,
+                        IsBaseOfSpecialization<C, std::set>,
+                        IsBaseOfSpecialization<C, std::multiset>,
+                        IsBaseOfSpecialization<C, std::unordered_map>,
+                        IsBaseOfSpecialization<C, std::unordered_multimap>,
+                        IsBaseOfSpecialization<C, std::unordered_set>,
+                        IsBaseOfSpecialization<C, std::unordered_multiset>,
+                        IsBaseOfSpecialization<C, std::vector>> {};
+
+template <typename C, template <typename...> class T, typename = void>
+struct IsConvertibleToSpecializationImpl : std::false_type {};
+// IsConvertibleToSpecializationImpl needs multiple partial specializations to
+// SFINAE on the existence of container dependent types and plug them into the
+// STL template.
+template <typename C, template <typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T, absl::void_t<typename C::value_type, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::value_type, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::key_compare,
+                 typename C::allocator_type>>
+    : std::is_convertible<C, T<typename C::key_type, typename C::key_compare,
+                               typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::key_compare, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::key_type, typename C::mapped_type,
+               typename C::key_compare, typename C::allocator_type>> {};
+template <typename C, template <typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::hasher,
+                 typename C::key_equal, typename C::allocator_type>>
+    : std::is_convertible<
+          C, T<typename C::key_type, typename C::hasher, typename C::key_equal,
+               typename C::allocator_type>> {};
+template <typename C,
+          template <typename, typename, typename, typename, typename> class T>
+struct IsConvertibleToSpecializationImpl<
+    C, T,
+    absl::void_t<typename C::key_type, typename C::mapped_type,
+                 typename C::hasher, typename C::key_equal,
+                 typename C::allocator_type>>
+    : std::is_convertible<C, T<typename C::key_type, typename C::mapped_type,
+                               typename C::hasher, typename C::key_equal,
+                               typename C::allocator_type>> {};
+template <typename C, template <typename...> class T>
+using IsConvertibleToSpecialization =
+    IsConvertibleToSpecializationImpl<absl::decay_t<C>, T>;
+
+template <typename C>
+struct IsConvertibleToArrayImpl : std::false_type {};
+template <template <typename, size_t> class A, typename T, size_t N>
+struct IsConvertibleToArrayImpl<A<T, N>>
+    : std::is_convertible<A<T, N>, std::array<T, N>> {};
+template <typename C>
+using IsConvertibleToArray = IsConvertibleToArrayImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsConvertibleToBitsetImpl : std::false_type {};
+template <template <size_t> class B, size_t N>
+struct IsConvertibleToBitsetImpl<B<N>>
+    : std::is_convertible<B<N>, std::bitset<N>> {};
+template <typename C>
+using IsConvertibleToBitset = IsConvertibleToBitsetImpl<absl::decay_t<C>>;
+
+template <typename C>
+struct IsConvertibleToSTLContainer
+    : absl::disjunction<
+          IsConvertibleToArray<C>, IsConvertibleToBitset<C>,
+          IsConvertibleToSpecialization<C, std::deque>,
+          IsConvertibleToSpecialization<C, std::forward_list>,
+          IsConvertibleToSpecialization<C, std::list>,
+          IsConvertibleToSpecialization<C, std::map>,
+          IsConvertibleToSpecialization<C, std::multimap>,
+          IsConvertibleToSpecialization<C, std::set>,
+          IsConvertibleToSpecialization<C, std::multiset>,
+          IsConvertibleToSpecialization<C, std::unordered_map>,
+          IsConvertibleToSpecialization<C, std::unordered_multimap>,
+          IsConvertibleToSpecialization<C, std::unordered_set>,
+          IsConvertibleToSpecialization<C, std::unordered_multiset>,
+          IsConvertibleToSpecialization<C, std::vector>> {};
+
+template <typename C>
+struct IsStrictlyBaseOfAndConvertibleToSTLContainer
+    : absl::conjunction<absl::negation<IsSTLContainer<C>>,
+                        IsBaseOfSTLContainer<C>,
+                        IsConvertibleToSTLContainer<C>> {};
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+#endif  // ABSL_STRINGS_INTERNAL_STL_TYPE_TRAITS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.cc
new file mode 100644
index 0000000..4d0604e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.cc	
@@ -0,0 +1,388 @@
+//
+// POSIX spec:
+//   http://pubs.opengroup.org/onlinepubs/009695399/functions/fprintf.html
+//
+#include "absl/strings/internal/str_format/arg.h"
+
+#include <cassert>
+#include <cerrno>
+#include <cstdlib>
+#include <string>
+#include <type_traits>
+
+#include "absl/base/port.h"
+#include "absl/strings/internal/str_format/float_conversion.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+namespace {
+
+const char kDigit[2][32] = { "0123456789abcdef", "0123456789ABCDEF" };
+
+// Reduce *capacity by s.size(), clipped to a 0 minimum.
+void ReducePadding(string_view s, size_t *capacity) {
+  *capacity = Excess(s.size(), *capacity);
+}
+
+// Reduce *capacity by n, clipped to a 0 minimum.
+void ReducePadding(size_t n, size_t *capacity) {
+  *capacity = Excess(n, *capacity);
+}
+
+template <typename T>
+struct MakeUnsigned : std::make_unsigned<T> {};
+template <>
+struct MakeUnsigned<absl::int128> {
+  using type = absl::uint128;
+};
+template <>
+struct MakeUnsigned<absl::uint128> {
+  using type = absl::uint128;
+};
+
+template <typename T>
+struct IsSigned : std::is_signed<T> {};
+template <>
+struct IsSigned<absl::int128> : std::true_type {};
+template <>
+struct IsSigned<absl::uint128> : std::false_type {};
+
+class ConvertedIntInfo {
+ public:
+  template <typename T>
+  ConvertedIntInfo(T v, ConversionChar conv) {
+    using Unsigned = typename MakeUnsigned<T>::type;
+    auto u = static_cast<Unsigned>(v);
+    if (IsNeg(v)) {
+      is_neg_ = true;
+      u = Unsigned{} - u;
+    } else {
+      is_neg_ = false;
+    }
+    UnsignedToStringRight(u, conv);
+  }
+
+  string_view digits() const {
+    return {end() - size_, static_cast<size_t>(size_)};
+  }
+  bool is_neg() const { return is_neg_; }
+
+ private:
+  template <typename T, bool IsSigned>
+  struct IsNegImpl {
+    static bool Eval(T v) { return v < 0; }
+  };
+  template <typename T>
+  struct IsNegImpl<T, false> {
+    static bool Eval(T) {
+      return false;
+    }
+  };
+
+  template <typename T>
+  bool IsNeg(T v) {
+    return IsNegImpl<T, IsSigned<T>::value>::Eval(v);
+  }
+
+  template <typename T>
+  void UnsignedToStringRight(T u, ConversionChar conv) {
+    char *p = end();
+    switch (FormatConversionCharRadix(conv)) {
+      default:
+      case 10:
+        for (; u; u /= 10)
+          *--p = static_cast<char>('0' + static_cast<size_t>(u % 10));
+        break;
+      case 8:
+        for (; u; u /= 8)
+          *--p = static_cast<char>('0' + static_cast<size_t>(u % 8));
+        break;
+      case 16: {
+        const char *digits = kDigit[FormatConversionCharIsUpper(conv) ? 1 : 0];
+        for (; u; u /= 16) *--p = digits[static_cast<size_t>(u % 16)];
+        break;
+      }
+    }
+    size_ = static_cast<int>(end() - p);
+  }
+
+  const char *end() const { return storage_ + sizeof(storage_); }
+  char *end() { return storage_ + sizeof(storage_); }
+
+  bool is_neg_;
+  int size_;
+  // Max size: 128 bit value as octal -> 43 digits
+  char storage_[128 / 3 + 1];
+};
+
+// Note: 'o' conversions do not have a base indicator, it's just that
+// the '#' flag is specified to modify the precision for 'o' conversions.
+string_view BaseIndicator(const ConvertedIntInfo &info,
+                          const ConversionSpec conv) {
+  bool alt = conv.flags().alt;
+  int radix = FormatConversionCharRadix(conv.conv());
+  if (conv.conv() == ConversionChar::p) alt = true;  // always show 0x for %p.
+  // From the POSIX description of '#' flag:
+  //   "For x or X conversion specifiers, a non-zero result shall have
+  //   0x (or 0X) prefixed to it."
+  if (alt && radix == 16 && !info.digits().empty()) {
+    if (FormatConversionCharIsUpper(conv.conv())) return "0X";
+    return "0x";
+  }
+  return {};
+}
+
+string_view SignColumn(bool neg, const ConversionSpec conv) {
+  if (FormatConversionCharIsSigned(conv.conv())) {
+    if (neg) return "-";
+    if (conv.flags().show_pos) return "+";
+    if (conv.flags().sign_col) return " ";
+  }
+  return {};
+}
+
+bool ConvertCharImpl(unsigned char v, const ConversionSpec conv,
+                     FormatSinkImpl *sink) {
+  size_t fill = 0;
+  if (conv.width() >= 0) fill = conv.width();
+  ReducePadding(1, &fill);
+  if (!conv.flags().left) sink->Append(fill, ' ');
+  sink->Append(1, v);
+  if (conv.flags().left) sink->Append(fill, ' ');
+  return true;
+}
+
+bool ConvertIntImplInner(const ConvertedIntInfo &info,
+                         const ConversionSpec conv, FormatSinkImpl *sink) {
+  // Print as a sequence of Substrings:
+  //   [left_spaces][sign][base_indicator][zeroes][formatted][right_spaces]
+  size_t fill = 0;
+  if (conv.width() >= 0) fill = conv.width();
+
+  string_view formatted = info.digits();
+  ReducePadding(formatted, &fill);
+
+  string_view sign = SignColumn(info.is_neg(), conv);
+  ReducePadding(sign, &fill);
+
+  string_view base_indicator = BaseIndicator(info, conv);
+  ReducePadding(base_indicator, &fill);
+
+  int precision = conv.precision();
+  bool precision_specified = precision >= 0;
+  if (!precision_specified)
+    precision = 1;
+
+  if (conv.flags().alt && conv.conv() == ConversionChar::o) {
+    // From POSIX description of the '#' (alt) flag:
+    //   "For o conversion, it increases the precision (if necessary) to
+    //   force the first digit of the result to be zero."
+    if (formatted.empty() || *formatted.begin() != '0') {
+      int needed = static_cast<int>(formatted.size()) + 1;
+      precision = std::max(precision, needed);
+    }
+  }
+
+  size_t num_zeroes = Excess(formatted.size(), precision);
+  ReducePadding(num_zeroes, &fill);
+
+  size_t num_left_spaces = !conv.flags().left ? fill : 0;
+  size_t num_right_spaces = conv.flags().left ? fill : 0;
+
+  // From POSIX description of the '0' (zero) flag:
+  //   "For d, i, o, u, x, and X conversion specifiers, if a precision
+  //   is specified, the '0' flag is ignored."
+  if (!precision_specified && conv.flags().zero) {
+    num_zeroes += num_left_spaces;
+    num_left_spaces = 0;
+  }
+
+  sink->Append(num_left_spaces, ' ');
+  sink->Append(sign);
+  sink->Append(base_indicator);
+  sink->Append(num_zeroes, '0');
+  sink->Append(formatted);
+  sink->Append(num_right_spaces, ' ');
+  return true;
+}
+
+template <typename T>
+bool ConvertIntImplInner(T v, const ConversionSpec conv, FormatSinkImpl *sink) {
+  ConvertedIntInfo info(v, conv.conv());
+  if (conv.flags().basic && (conv.conv() != ConversionChar::p)) {
+    if (info.is_neg()) sink->Append(1, '-');
+    if (info.digits().empty()) {
+      sink->Append(1, '0');
+    } else {
+      sink->Append(info.digits());
+    }
+    return true;
+  }
+  return ConvertIntImplInner(info, conv, sink);
+}
+
+template <typename T>
+bool ConvertIntArg(T v, const ConversionSpec conv, FormatSinkImpl *sink) {
+  if (FormatConversionCharIsFloat(conv.conv())) {
+    return FormatConvertImpl(static_cast<double>(v), conv, sink).value;
+  }
+  if (conv.conv() == ConversionChar::c)
+    return ConvertCharImpl(static_cast<unsigned char>(v), conv, sink);
+  if (!FormatConversionCharIsIntegral(conv.conv())) return false;
+  if (!FormatConversionCharIsSigned(conv.conv()) && IsSigned<T>::value) {
+    using U = typename MakeUnsigned<T>::type;
+    return FormatConvertImpl(static_cast<U>(v), conv, sink).value;
+  }
+  return ConvertIntImplInner(v, conv, sink);
+}
+
+template <typename T>
+bool ConvertFloatArg(T v, const ConversionSpec conv, FormatSinkImpl *sink) {
+  return FormatConversionCharIsFloat(conv.conv()) &&
+         ConvertFloatImpl(v, conv, sink);
+}
+
+inline bool ConvertStringArg(string_view v, const ConversionSpec conv,
+                             FormatSinkImpl *sink) {
+  if (conv.conv() != ConversionChar::s) return false;
+  if (conv.flags().basic) {
+    sink->Append(v);
+    return true;
+  }
+  return sink->PutPaddedString(v, conv.width(), conv.precision(),
+                               conv.flags().left);
+}
+
+}  // namespace
+
+// ==================== Strings ====================
+ConvertResult<Conv::s> FormatConvertImpl(const std::string &v,
+                                         const ConversionSpec conv,
+                                         FormatSinkImpl *sink) {
+  return {ConvertStringArg(v, conv, sink)};
+}
+
+ConvertResult<Conv::s> FormatConvertImpl(string_view v,
+                                         const ConversionSpec conv,
+                                         FormatSinkImpl *sink) {
+  return {ConvertStringArg(v, conv, sink)};
+}
+
+ConvertResult<Conv::s | Conv::p> FormatConvertImpl(const char *v,
+                                                   const ConversionSpec conv,
+                                                   FormatSinkImpl *sink) {
+  if (conv.conv() == ConversionChar::p)
+    return {FormatConvertImpl(VoidPtr(v), conv, sink).value};
+  size_t len;
+  if (v == nullptr) {
+    len = 0;
+  } else if (conv.precision() < 0) {
+    len = std::strlen(v);
+  } else {
+    // If precision is set, we look for the NUL-terminator on the valid range.
+    len = std::find(v, v + conv.precision(), '\0') - v;
+  }
+  return {ConvertStringArg(string_view(v, len), conv, sink)};
+}
+
+// ==================== Raw pointers ====================
+ConvertResult<Conv::p> FormatConvertImpl(VoidPtr v, const ConversionSpec conv,
+                                         FormatSinkImpl *sink) {
+  if (conv.conv() != ConversionChar::p) return {false};
+  if (!v.value) {
+    sink->Append("(nil)");
+    return {true};
+  }
+  return {ConvertIntImplInner(v.value, conv, sink)};
+}
+
+// ==================== Floats ====================
+FloatingConvertResult FormatConvertImpl(float v, const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertFloatArg(v, conv, sink)};
+}
+FloatingConvertResult FormatConvertImpl(double v, const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertFloatArg(v, conv, sink)};
+}
+FloatingConvertResult FormatConvertImpl(long double v,
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertFloatArg(v, conv, sink)};
+}
+
+// ==================== Chars ====================
+IntegralConvertResult FormatConvertImpl(char v, const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(signed char v,
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(unsigned char v,
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+
+// ==================== Ints ====================
+IntegralConvertResult FormatConvertImpl(short v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(unsigned short v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(int v, const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(unsigned v, const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(long v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(unsigned long v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(long long v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(unsigned long long v,  // NOLINT
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(absl::int128 v,
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+IntegralConvertResult FormatConvertImpl(absl::uint128 v,
+                                        const ConversionSpec conv,
+                                        FormatSinkImpl *sink) {
+  return {ConvertIntArg(v, conv, sink)};
+}
+
+ABSL_INTERNAL_FORMAT_DISPATCH_OVERLOADS_EXPAND_();
+
+
+
+}  // namespace str_format_internal
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.h
new file mode 100644
index 0000000..7a93756
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/arg.h	
@@ -0,0 +1,432 @@
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_ARG_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_ARG_H_
+
+#include <string.h>
+#include <wchar.h>
+
+#include <cstdio>
+#include <iomanip>
+#include <limits>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <type_traits>
+
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"
+#include "absl/numeric/int128.h"
+#include "absl/strings/internal/str_format/extension.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class Cord;
+class FormatCountCapture;
+class FormatSink;
+
+namespace str_format_internal {
+
+template <typename T, typename = void>
+struct HasUserDefinedConvert : std::false_type {};
+
+template <typename T>
+struct HasUserDefinedConvert<
+    T, void_t<decltype(AbslFormatConvert(
+           std::declval<const T&>(), std::declval<ConversionSpec>(),
+           std::declval<FormatSink*>()))>> : std::true_type {};
+
+template <typename T>
+class StreamedWrapper;
+
+// If 'v' can be converted (in the printf sense) according to 'conv',
+// then convert it, appending to `sink` and return `true`.
+// Otherwise fail and return `false`.
+
+// Raw pointers.
+struct VoidPtr {
+  VoidPtr() = default;
+  template <typename T,
+            decltype(reinterpret_cast<uintptr_t>(std::declval<T*>())) = 0>
+  VoidPtr(T* ptr)  // NOLINT
+      : value(ptr ? reinterpret_cast<uintptr_t>(ptr) : 0) {}
+  uintptr_t value;
+};
+ConvertResult<Conv::p> FormatConvertImpl(VoidPtr v, ConversionSpec conv,
+                                         FormatSinkImpl* sink);
+
+// Strings.
+ConvertResult<Conv::s> FormatConvertImpl(const std::string& v,
+                                         ConversionSpec conv,
+                                         FormatSinkImpl* sink);
+ConvertResult<Conv::s> FormatConvertImpl(string_view v, ConversionSpec conv,
+                                         FormatSinkImpl* sink);
+ConvertResult<Conv::s | Conv::p> FormatConvertImpl(const char* v,
+                                                   ConversionSpec conv,
+                                                   FormatSinkImpl* sink);
+template <class AbslCord,
+          typename std::enable_if<
+              std::is_same<AbslCord, absl::Cord>::value>::type* = nullptr>
+ConvertResult<Conv::s> FormatConvertImpl(const AbslCord& value,
+                                         ConversionSpec conv,
+                                         FormatSinkImpl* sink) {
+  if (conv.conv() != ConversionChar::s) return {false};
+
+  bool is_left = conv.flags().left;
+  size_t space_remaining = 0;
+
+  int width = conv.width();
+  if (width >= 0) space_remaining = width;
+
+  size_t to_write = value.size();
+
+  int precision = conv.precision();
+  if (precision >= 0)
+    to_write = (std::min)(to_write, static_cast<size_t>(precision));
+
+  space_remaining = Excess(to_write, space_remaining);
+
+  if (space_remaining > 0 && !is_left) sink->Append(space_remaining, ' ');
+
+  for (string_view piece : value.Chunks()) {
+    if (piece.size() > to_write) {
+      piece.remove_suffix(piece.size() - to_write);
+      to_write = 0;
+    } else {
+      to_write -= piece.size();
+    }
+    sink->Append(piece);
+    if (to_write == 0) {
+      break;
+    }
+  }
+
+  if (space_remaining > 0 && is_left) sink->Append(space_remaining, ' ');
+  return {true};
+}
+
+using IntegralConvertResult =
+    ConvertResult<Conv::c | Conv::numeric | Conv::star>;
+using FloatingConvertResult = ConvertResult<Conv::floating>;
+
+// Floats.
+FloatingConvertResult FormatConvertImpl(float v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+FloatingConvertResult FormatConvertImpl(double v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+FloatingConvertResult FormatConvertImpl(long double v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+
+// Chars.
+IntegralConvertResult FormatConvertImpl(char v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(signed char v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(unsigned char v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+
+// Ints.
+IntegralConvertResult FormatConvertImpl(short v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(unsigned short v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(int v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(unsigned v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(long v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(unsigned long v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(long long v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(unsigned long long v,  // NOLINT
+                                        ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(int128 v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+IntegralConvertResult FormatConvertImpl(uint128 v, ConversionSpec conv,
+                                        FormatSinkImpl* sink);
+template <typename T, enable_if_t<std::is_same<T, bool>::value, int> = 0>
+IntegralConvertResult FormatConvertImpl(T v, ConversionSpec conv,
+                                        FormatSinkImpl* sink) {
+  return FormatConvertImpl(static_cast<int>(v), conv, sink);
+}
+
+// We provide this function to help the checker, but it is never defined.
+// FormatArgImpl will use the underlying Convert functions instead.
+template <typename T>
+typename std::enable_if<std::is_enum<T>::value &&
+                            !HasUserDefinedConvert<T>::value,
+                        IntegralConvertResult>::type
+FormatConvertImpl(T v, ConversionSpec conv, FormatSinkImpl* sink);
+
+template <typename T>
+ConvertResult<Conv::s> FormatConvertImpl(const StreamedWrapper<T>& v,
+                                         ConversionSpec conv,
+                                         FormatSinkImpl* out) {
+  std::ostringstream oss;
+  oss << v.v_;
+  if (!oss) return {false};
+  return str_format_internal::FormatConvertImpl(oss.str(), conv, out);
+}
+
+// Use templates and dependent types to delay evaluation of the function
+// until after FormatCountCapture is fully defined.
+struct FormatCountCaptureHelper {
+  template <class T = int>
+  static ConvertResult<Conv::n> ConvertHelper(const FormatCountCapture& v,
+                                              ConversionSpec conv,
+                                              FormatSinkImpl* sink) {
+    const absl::enable_if_t<sizeof(T) != 0, FormatCountCapture>& v2 = v;
+
+    if (conv.conv() != str_format_internal::ConversionChar::n) return {false};
+    *v2.p_ = static_cast<int>(sink->size());
+    return {true};
+  }
+};
+
+template <class T = int>
+ConvertResult<Conv::n> FormatConvertImpl(const FormatCountCapture& v,
+                                         ConversionSpec conv,
+                                         FormatSinkImpl* sink) {
+  return FormatCountCaptureHelper::ConvertHelper(v, conv, sink);
+}
+
+// Helper friend struct to hide implementation details from the public API of
+// FormatArgImpl.
+struct FormatArgImplFriend {
+  template <typename Arg>
+  static bool ToInt(Arg arg, int* out) {
+    // A value initialized ConversionSpec has a `none` conv, which tells the
+    // dispatcher to run the `int` conversion.
+    return arg.dispatcher_(arg.data_, {}, out);
+  }
+
+  template <typename Arg>
+  static bool Convert(Arg arg, str_format_internal::ConversionSpec conv,
+                      FormatSinkImpl* out) {
+    return arg.dispatcher_(arg.data_, conv, out);
+  }
+
+  template <typename Arg>
+  static typename Arg::Dispatcher GetVTablePtrForTest(Arg arg) {
+    return arg.dispatcher_;
+  }
+};
+
+// A type-erased handle to a format argument.
+class FormatArgImpl {
+ private:
+  enum { kInlinedSpace = 8 };
+
+  using VoidPtr = str_format_internal::VoidPtr;
+
+  union Data {
+    const void* ptr;
+    const volatile void* volatile_ptr;
+    char buf[kInlinedSpace];
+  };
+
+  using Dispatcher = bool (*)(Data, ConversionSpec, void* out);
+
+  template <typename T>
+  struct store_by_value
+      : std::integral_constant<bool, (sizeof(T) <= kInlinedSpace) &&
+                                         (std::is_integral<T>::value ||
+                                          std::is_floating_point<T>::value ||
+                                          std::is_pointer<T>::value ||
+                                          std::is_same<VoidPtr, T>::value)> {};
+
+  enum StoragePolicy { ByPointer, ByVolatilePointer, ByValue };
+  template <typename T>
+  struct storage_policy
+      : std::integral_constant<StoragePolicy,
+                               (std::is_volatile<T>::value
+                                    ? ByVolatilePointer
+                                    : (store_by_value<T>::value ? ByValue
+                                                                : ByPointer))> {
+  };
+
+  // To reduce the number of vtables we will decay values before hand.
+  // Anything with a user-defined Convert will get its own vtable.
+  // For everything else:
+  //   - Decay char* and char arrays into `const char*`
+  //   - Decay any other pointer to `const void*`
+  //   - Decay all enums to their underlying type.
+  //   - Decay function pointers to void*.
+  template <typename T, typename = void>
+  struct DecayType {
+    static constexpr bool kHasUserDefined =
+        str_format_internal::HasUserDefinedConvert<T>::value;
+    using type = typename std::conditional<
+        !kHasUserDefined && std::is_convertible<T, const char*>::value,
+        const char*,
+        typename std::conditional<!kHasUserDefined &&
+                                      std::is_convertible<T, VoidPtr>::value,
+                                  VoidPtr, const T&>::type>::type;
+  };
+  template <typename T>
+  struct DecayType<T,
+                   typename std::enable_if<
+                       !str_format_internal::HasUserDefinedConvert<T>::value &&
+                       std::is_enum<T>::value>::type> {
+    using type = typename std::underlying_type<T>::type;
+  };
+
+ public:
+  template <typename T>
+  explicit FormatArgImpl(const T& value) {
+    using D = typename DecayType<T>::type;
+    static_assert(
+        std::is_same<D, const T&>::value || storage_policy<D>::value == ByValue,
+        "Decayed types must be stored by value");
+    Init(static_cast<D>(value));
+  }
+
+ private:
+  friend struct str_format_internal::FormatArgImplFriend;
+  template <typename T, StoragePolicy = storage_policy<T>::value>
+  struct Manager;
+
+  template <typename T>
+  struct Manager<T, ByPointer> {
+    static Data SetValue(const T& value) {
+      Data data;
+      data.ptr = std::addressof(value);
+      return data;
+    }
+
+    static const T& Value(Data arg) { return *static_cast<const T*>(arg.ptr); }
+  };
+
+  template <typename T>
+  struct Manager<T, ByVolatilePointer> {
+    static Data SetValue(const T& value) {
+      Data data;
+      data.volatile_ptr = &value;
+      return data;
+    }
+
+    static const T& Value(Data arg) {
+      return *static_cast<const T*>(arg.volatile_ptr);
+    }
+  };
+
+  template <typename T>
+  struct Manager<T, ByValue> {
+    static Data SetValue(const T& value) {
+      Data data;
+      memcpy(data.buf, &value, sizeof(value));
+      return data;
+    }
+
+    static T Value(Data arg) {
+      T value;
+      memcpy(&value, arg.buf, sizeof(T));
+      return value;
+    }
+  };
+
+  template <typename T>
+  void Init(const T& value) {
+    data_ = Manager<T>::SetValue(value);
+    dispatcher_ = &Dispatch<T>;
+  }
+
+  template <typename T>
+  static int ToIntVal(const T& val) {
+    using CommonType = typename std::conditional<std::is_signed<T>::value,
+                                                 int64_t, uint64_t>::type;
+    if (static_cast<CommonType>(val) >
+        static_cast<CommonType>((std::numeric_limits<int>::max)())) {
+      return (std::numeric_limits<int>::max)();
+    } else if (std::is_signed<T>::value &&
+               static_cast<CommonType>(val) <
+                   static_cast<CommonType>((std::numeric_limits<int>::min)())) {
+      return (std::numeric_limits<int>::min)();
+    }
+    return static_cast<int>(val);
+  }
+
+  template <typename T>
+  static bool ToInt(Data arg, int* out, std::true_type /* is_integral */,
+                    std::false_type) {
+    *out = ToIntVal(Manager<T>::Value(arg));
+    return true;
+  }
+
+  template <typename T>
+  static bool ToInt(Data arg, int* out, std::false_type,
+                    std::true_type /* is_enum */) {
+    *out = ToIntVal(static_cast<typename std::underlying_type<T>::type>(
+        Manager<T>::Value(arg)));
+    return true;
+  }
+
+  template <typename T>
+  static bool ToInt(Data, int*, std::false_type, std::false_type) {
+    return false;
+  }
+
+  template <typename T>
+  static bool Dispatch(Data arg, ConversionSpec spec, void* out) {
+    // A `none` conv indicates that we want the `int` conversion.
+    if (ABSL_PREDICT_FALSE(spec.conv() == ConversionChar::none)) {
+      return ToInt<T>(arg, static_cast<int*>(out), std::is_integral<T>(),
+                      std::is_enum<T>());
+    }
+
+    return str_format_internal::FormatConvertImpl(
+               Manager<T>::Value(arg), spec, static_cast<FormatSinkImpl*>(out))
+        .value;
+  }
+
+  Data data_;
+  Dispatcher dispatcher_;
+};
+
+#define ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(T, E) \
+  E template bool FormatArgImpl::Dispatch<T>(Data, ConversionSpec, void*)
+
+#define ABSL_INTERNAL_FORMAT_DISPATCH_OVERLOADS_EXPAND_(...)                   \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(str_format_internal::VoidPtr,     \
+                                             __VA_ARGS__);                     \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(bool, __VA_ARGS__);               \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(char, __VA_ARGS__);               \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(signed char, __VA_ARGS__);        \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(unsigned char, __VA_ARGS__);      \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(short, __VA_ARGS__); /* NOLINT */ \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(unsigned short,      /* NOLINT */ \
+                                             __VA_ARGS__);                     \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(int, __VA_ARGS__);                \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(unsigned int, __VA_ARGS__);       \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(long, __VA_ARGS__); /* NOLINT */  \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(unsigned long,      /* NOLINT */  \
+                                             __VA_ARGS__);                     \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(long long, /* NOLINT */           \
+                                             __VA_ARGS__);                     \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(unsigned long long, /* NOLINT */  \
+                                             __VA_ARGS__);                     \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(int128, __VA_ARGS__);             \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(uint128, __VA_ARGS__);            \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(float, __VA_ARGS__);              \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(double, __VA_ARGS__);             \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(long double, __VA_ARGS__);        \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(const char*, __VA_ARGS__);        \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(std::string, __VA_ARGS__);        \
+  ABSL_INTERNAL_FORMAT_DISPATCH_INSTANTIATE_(string_view, __VA_ARGS__)
+
+ABSL_INTERNAL_FORMAT_DISPATCH_OVERLOADS_EXPAND_(extern);
+
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_ARG_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.cc
new file mode 100644
index 0000000..27522fd
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.cc	
@@ -0,0 +1,245 @@
+#include "absl/strings/internal/str_format/bind.h"
+
+#include <cerrno>
+#include <limits>
+#include <sstream>
+#include <string>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+namespace {
+
+inline bool BindFromPosition(int position, int* value,
+                             absl::Span<const FormatArgImpl> pack) {
+  assert(position > 0);
+  if (static_cast<size_t>(position) > pack.size()) {
+    return false;
+  }
+  // -1 because positions are 1-based
+  return FormatArgImplFriend::ToInt(pack[position - 1], value);
+}
+
+class ArgContext {
+ public:
+  explicit ArgContext(absl::Span<const FormatArgImpl> pack) : pack_(pack) {}
+
+  // Fill 'bound' with the results of applying the context's argument pack
+  // to the specified 'unbound'. We synthesize a BoundConversion by
+  // lining up a UnboundConversion with a user argument. We also
+  // resolve any '*' specifiers for width and precision, so after
+  // this call, 'bound' has all the information it needs to be formatted.
+  // Returns false on failure.
+  bool Bind(const UnboundConversion* unbound, BoundConversion* bound);
+
+ private:
+  absl::Span<const FormatArgImpl> pack_;
+};
+
+inline bool ArgContext::Bind(const UnboundConversion* unbound,
+                             BoundConversion* bound) {
+  const FormatArgImpl* arg = nullptr;
+  int arg_position = unbound->arg_position;
+  if (static_cast<size_t>(arg_position - 1) >= pack_.size()) return false;
+  arg = &pack_[arg_position - 1];  // 1-based
+
+  if (!unbound->flags.basic) {
+    int width = unbound->width.value();
+    bool force_left = false;
+    if (unbound->width.is_from_arg()) {
+      if (!BindFromPosition(unbound->width.get_from_arg(), &width, pack_))
+        return false;
+      if (width < 0) {
+        // "A negative field width is taken as a '-' flag followed by a
+        // positive field width."
+        force_left = true;
+        // Make sure we don't overflow the width when negating it.
+        width = -std::max(width, -std::numeric_limits<int>::max());
+      }
+    }
+
+    int precision = unbound->precision.value();
+    if (unbound->precision.is_from_arg()) {
+      if (!BindFromPosition(unbound->precision.get_from_arg(), &precision,
+                            pack_))
+        return false;
+    }
+
+    FormatConversionSpecImplFriend::SetWidth(width, bound);
+    FormatConversionSpecImplFriend::SetPrecision(precision, bound);
+
+    if (force_left) {
+      Flags flags = unbound->flags;
+      flags.left = true;
+      FormatConversionSpecImplFriend::SetFlags(flags, bound);
+    } else {
+      FormatConversionSpecImplFriend::SetFlags(unbound->flags, bound);
+    }
+  } else {
+    FormatConversionSpecImplFriend::SetFlags(unbound->flags, bound);
+    FormatConversionSpecImplFriend::SetWidth(-1, bound);
+    FormatConversionSpecImplFriend::SetPrecision(-1, bound);
+  }
+  FormatConversionSpecImplFriend::SetConversionChar(unbound->conv, bound);
+  bound->set_arg(arg);
+  return true;
+}
+
+template <typename Converter>
+class ConverterConsumer {
+ public:
+  ConverterConsumer(Converter converter, absl::Span<const FormatArgImpl> pack)
+      : converter_(converter), arg_context_(pack) {}
+
+  bool Append(string_view s) {
+    converter_.Append(s);
+    return true;
+  }
+  bool ConvertOne(const UnboundConversion& conv, string_view conv_string) {
+    BoundConversion bound;
+    if (!arg_context_.Bind(&conv, &bound)) return false;
+    return converter_.ConvertOne(bound, conv_string);
+  }
+
+ private:
+  Converter converter_;
+  ArgContext arg_context_;
+};
+
+template <typename Converter>
+bool ConvertAll(const UntypedFormatSpecImpl format,
+                absl::Span<const FormatArgImpl> args, Converter converter) {
+  if (format.has_parsed_conversion()) {
+    return format.parsed_conversion()->ProcessFormat(
+        ConverterConsumer<Converter>(converter, args));
+  } else {
+    return ParseFormatString(format.str(),
+                             ConverterConsumer<Converter>(converter, args));
+  }
+}
+
+class DefaultConverter {
+ public:
+  explicit DefaultConverter(FormatSinkImpl* sink) : sink_(sink) {}
+
+  void Append(string_view s) const { sink_->Append(s); }
+
+  bool ConvertOne(const BoundConversion& bound, string_view /*conv*/) const {
+    return FormatArgImplFriend::Convert(*bound.arg(), bound, sink_);
+  }
+
+ private:
+  FormatSinkImpl* sink_;
+};
+
+class SummarizingConverter {
+ public:
+  explicit SummarizingConverter(FormatSinkImpl* sink) : sink_(sink) {}
+
+  void Append(string_view s) const { sink_->Append(s); }
+
+  bool ConvertOne(const BoundConversion& bound, string_view /*conv*/) const {
+    UntypedFormatSpecImpl spec("%d");
+
+    std::ostringstream ss;
+    ss << "{" << Streamable(spec, {*bound.arg()}) << ":"
+       << FormatConversionSpecImplFriend::FlagsToString(bound);
+    if (bound.width() >= 0) ss << bound.width();
+    if (bound.precision() >= 0) ss << "." << bound.precision();
+    ss << bound.conv() << "}";
+    Append(ss.str());
+    return true;
+  }
+
+ private:
+  FormatSinkImpl* sink_;
+};
+
+}  // namespace
+
+bool BindWithPack(const UnboundConversion* props,
+                  absl::Span<const FormatArgImpl> pack,
+                  BoundConversion* bound) {
+  return ArgContext(pack).Bind(props, bound);
+}
+
+std::string Summarize(const UntypedFormatSpecImpl format,
+                      absl::Span<const FormatArgImpl> args) {
+  typedef SummarizingConverter Converter;
+  std::string out;
+  {
+    // inner block to destroy sink before returning out. It ensures a last
+    // flush.
+    FormatSinkImpl sink(&out);
+    if (!ConvertAll(format, args, Converter(&sink))) {
+      return "";
+    }
+  }
+  return out;
+}
+
+bool FormatUntyped(FormatRawSinkImpl raw_sink,
+                   const UntypedFormatSpecImpl format,
+                   absl::Span<const FormatArgImpl> args) {
+  FormatSinkImpl sink(raw_sink);
+  using Converter = DefaultConverter;
+  return ConvertAll(format, args, Converter(&sink));
+}
+
+std::ostream& Streamable::Print(std::ostream& os) const {
+  if (!FormatUntyped(&os, format_, args_)) os.setstate(std::ios::failbit);
+  return os;
+}
+
+std::string& AppendPack(std::string* out, const UntypedFormatSpecImpl format,
+                        absl::Span<const FormatArgImpl> args) {
+  size_t orig = out->size();
+  if (ABSL_PREDICT_FALSE(!FormatUntyped(out, format, args))) {
+    out->erase(orig);
+  }
+  return *out;
+}
+
+std::string FormatPack(const UntypedFormatSpecImpl format,
+                       absl::Span<const FormatArgImpl> args) {
+  std::string out;
+  if (ABSL_PREDICT_FALSE(!FormatUntyped(&out, format, args))) {
+    out.clear();
+  }
+  return out;
+}
+
+int FprintF(std::FILE* output, const UntypedFormatSpecImpl format,
+            absl::Span<const FormatArgImpl> args) {
+  FILERawSink sink(output);
+  if (!FormatUntyped(&sink, format, args)) {
+    errno = EINVAL;
+    return -1;
+  }
+  if (sink.error()) {
+    errno = sink.error();
+    return -1;
+  }
+  if (sink.count() > std::numeric_limits<int>::max()) {
+    errno = EFBIG;
+    return -1;
+  }
+  return static_cast<int>(sink.count());
+}
+
+int SnprintF(char* output, size_t size, const UntypedFormatSpecImpl format,
+             absl::Span<const FormatArgImpl> args) {
+  BufferRawSink sink(output, size ? size - 1 : 0);
+  if (!FormatUntyped(&sink, format, args)) {
+    errno = EINVAL;
+    return -1;
+  }
+  size_t total = sink.total_written();
+  if (size) output[std::min(total, size - 1)] = 0;
+  return static_cast<int>(total);
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.h
new file mode 100644
index 0000000..cf41b19
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/bind.h	
@@ -0,0 +1,209 @@
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_BIND_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_BIND_H_
+
+#include <array>
+#include <cstdio>
+#include <sstream>
+#include <string>
+
+#include "absl/base/port.h"
+#include "absl/strings/internal/str_format/arg.h"
+#include "absl/strings/internal/str_format/checker.h"
+#include "absl/strings/internal/str_format/parser.h"
+#include "absl/types/span.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class UntypedFormatSpec;
+
+namespace str_format_internal {
+
+class BoundConversion : public ConversionSpec {
+ public:
+  const FormatArgImpl* arg() const { return arg_; }
+  void set_arg(const FormatArgImpl* a) { arg_ = a; }
+
+ private:
+  const FormatArgImpl* arg_;
+};
+
+// This is the type-erased class that the implementation uses.
+class UntypedFormatSpecImpl {
+ public:
+  UntypedFormatSpecImpl() = delete;
+
+  explicit UntypedFormatSpecImpl(string_view s)
+      : data_(s.data()), size_(s.size()) {}
+  explicit UntypedFormatSpecImpl(
+      const str_format_internal::ParsedFormatBase* pc)
+      : data_(pc), size_(~size_t{}) {}
+
+  bool has_parsed_conversion() const { return size_ == ~size_t{}; }
+
+  string_view str() const {
+    assert(!has_parsed_conversion());
+    return string_view(static_cast<const char*>(data_), size_);
+  }
+  const str_format_internal::ParsedFormatBase* parsed_conversion() const {
+    assert(has_parsed_conversion());
+    return static_cast<const str_format_internal::ParsedFormatBase*>(data_);
+  }
+
+  template <typename T>
+  static const UntypedFormatSpecImpl& Extract(const T& s) {
+    return s.spec_;
+  }
+
+ private:
+  const void* data_;
+  size_t size_;
+};
+
+template <typename T, typename...>
+struct MakeDependent {
+  using type = T;
+};
+
+// Implicitly convertible from `const char*`, `string_view`, and the
+// `ExtendedParsedFormat` type. This abstraction allows all format functions to
+// operate on any without providing too many overloads.
+template <typename... Args>
+class FormatSpecTemplate
+    : public MakeDependent<UntypedFormatSpec, Args...>::type {
+  using Base = typename MakeDependent<UntypedFormatSpec, Args...>::type;
+
+ public:
+#ifdef ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+  // Honeypot overload for when the std::string is not constexpr.
+  // We use the 'unavailable' attribute to give a better compiler error than
+  // just 'method is deleted'.
+  FormatSpecTemplate(...)  // NOLINT
+      __attribute__((unavailable("Format std::string is not constexpr.")));
+
+  // Honeypot overload for when the format is constexpr and invalid.
+  // We use the 'unavailable' attribute to give a better compiler error than
+  // just 'method is deleted'.
+  // To avoid checking the format twice, we just check that the format is
+  // constexpr. If is it valid, then the overload below will kick in.
+  // We add the template here to make this overload have lower priority.
+  template <typename = void>
+  FormatSpecTemplate(const char* s)  // NOLINT
+      __attribute__((
+          enable_if(str_format_internal::EnsureConstexpr(s), "constexpr trap"),
+          unavailable(
+              "Format specified does not match the arguments passed.")));
+
+  template <typename T = void>
+  FormatSpecTemplate(string_view s)  // NOLINT
+      __attribute__((enable_if(str_format_internal::EnsureConstexpr(s),
+                               "constexpr trap"))) {
+    static_assert(sizeof(T*) == 0,
+                  "Format specified does not match the arguments passed.");
+  }
+
+  // Good format overload.
+  FormatSpecTemplate(const char* s)  // NOLINT
+      __attribute__((enable_if(ValidFormatImpl<ArgumentToConv<Args>()...>(s),
+                               "bad format trap")))
+      : Base(s) {}
+
+  FormatSpecTemplate(string_view s)  // NOLINT
+      __attribute__((enable_if(ValidFormatImpl<ArgumentToConv<Args>()...>(s),
+                               "bad format trap")))
+      : Base(s) {}
+
+#else  // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+  FormatSpecTemplate(const char* s) : Base(s) {}  // NOLINT
+  FormatSpecTemplate(string_view s) : Base(s) {}  // NOLINT
+
+#endif  // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+  template <Conv... C, typename = typename std::enable_if<
+                           AllOf(sizeof...(C) == sizeof...(Args),
+                             Contains(ArgumentToConv<Args>(),
+                                          C)...)>::type>
+  FormatSpecTemplate(const ExtendedParsedFormat<C...>& pc)  // NOLINT
+      : Base(&pc) {}
+};
+
+template <typename... Args>
+struct FormatSpecDeductionBarrier {
+  using type = FormatSpecTemplate<Args...>;
+};
+
+class Streamable {
+ public:
+  Streamable(const UntypedFormatSpecImpl& format,
+             absl::Span<const FormatArgImpl> args)
+      : format_(format) {
+    if (args.size() <= ABSL_ARRAYSIZE(few_args_)) {
+      for (size_t i = 0; i < args.size(); ++i) {
+        few_args_[i] = args[i];
+      }
+      args_ = absl::MakeSpan(few_args_, args.size());
+    } else {
+      many_args_.assign(args.begin(), args.end());
+      args_ = many_args_;
+    }
+  }
+
+  std::ostream& Print(std::ostream& os) const;
+
+  friend std::ostream& operator<<(std::ostream& os, const Streamable& l) {
+    return l.Print(os);
+  }
+
+ private:
+  const UntypedFormatSpecImpl& format_;
+  absl::Span<const FormatArgImpl> args_;
+  // if args_.size() is 4 or less:
+  FormatArgImpl few_args_[4] = {FormatArgImpl(0), FormatArgImpl(0),
+                                FormatArgImpl(0), FormatArgImpl(0)};
+  // if args_.size() is more than 4:
+  std::vector<FormatArgImpl> many_args_;
+};
+
+// for testing
+std::string Summarize(UntypedFormatSpecImpl format,
+                      absl::Span<const FormatArgImpl> args);
+bool BindWithPack(const UnboundConversion* props,
+                  absl::Span<const FormatArgImpl> pack, BoundConversion* bound);
+
+bool FormatUntyped(FormatRawSinkImpl raw_sink,
+                   UntypedFormatSpecImpl format,
+                   absl::Span<const FormatArgImpl> args);
+
+std::string& AppendPack(std::string* out, UntypedFormatSpecImpl format,
+                        absl::Span<const FormatArgImpl> args);
+
+std::string FormatPack(const UntypedFormatSpecImpl format,
+                       absl::Span<const FormatArgImpl> args);
+
+int FprintF(std::FILE* output, UntypedFormatSpecImpl format,
+            absl::Span<const FormatArgImpl> args);
+int SnprintF(char* output, size_t size, UntypedFormatSpecImpl format,
+             absl::Span<const FormatArgImpl> args);
+
+// Returned by Streamed(v). Converts via '%s' to the std::string created
+// by std::ostream << v.
+template <typename T>
+class StreamedWrapper {
+ public:
+  explicit StreamedWrapper(const T& v) : v_(v) { }
+
+ private:
+  template <typename S>
+  friend ConvertResult<Conv::s> FormatConvertImpl(const StreamedWrapper<S>& v,
+                                                  ConversionSpec conv,
+                                                  FormatSinkImpl* out);
+  const T& v_;
+};
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_BIND_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/checker.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/checker.h
new file mode 100644
index 0000000..8993a79
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/checker.h	
@@ -0,0 +1,326 @@
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_CHECKER_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_CHECKER_H_
+
+#include "absl/base/attributes.h"
+#include "absl/strings/internal/str_format/arg.h"
+#include "absl/strings/internal/str_format/extension.h"
+
+// Compile time check support for entry points.
+
+#ifndef ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+#if ABSL_HAVE_ATTRIBUTE(enable_if) && !defined(__native_client__)
+#define ABSL_INTERNAL_ENABLE_FORMAT_CHECKER 1
+#endif  // ABSL_HAVE_ATTRIBUTE(enable_if) && !defined(__native_client__)
+#endif  // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+constexpr bool AllOf() { return true; }
+
+template <typename... T>
+constexpr bool AllOf(bool b, T... t) {
+  return b && AllOf(t...);
+}
+
+template <typename Arg>
+constexpr Conv ArgumentToConv() {
+  return decltype(str_format_internal::FormatConvertImpl(
+      std::declval<const Arg&>(), std::declval<const ConversionSpec&>(),
+      std::declval<FormatSinkImpl*>()))::kConv;
+}
+
+#ifdef ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+constexpr bool ContainsChar(const char* chars, char c) {
+  return *chars == c || (*chars && ContainsChar(chars + 1, c));
+}
+
+// A constexpr compatible list of Convs.
+struct ConvList {
+  const Conv* array;
+  int count;
+
+  // We do the bound check here to avoid having to do it on the callers.
+  // Returning an empty Conv has the same effect as short circuiting because it
+  // will never match any conversion.
+  constexpr Conv operator[](int i) const {
+    return i < count ? array[i] : Conv{};
+  }
+
+  constexpr ConvList without_front() const {
+    return count != 0 ? ConvList{array + 1, count - 1} : *this;
+  }
+};
+
+template <size_t count>
+struct ConvListT {
+  // Make sure the array has size > 0.
+  Conv list[count ? count : 1];
+};
+
+constexpr char GetChar(string_view str, size_t index) {
+  return index < str.size() ? str[index] : char{};
+}
+
+constexpr string_view ConsumeFront(string_view str, size_t len = 1) {
+  return len <= str.size() ? string_view(str.data() + len, str.size() - len)
+                           : string_view();
+}
+
+constexpr string_view ConsumeAnyOf(string_view format, const char* chars) {
+  return ContainsChar(chars, GetChar(format, 0))
+             ? ConsumeAnyOf(ConsumeFront(format), chars)
+             : format;
+}
+
+constexpr bool IsDigit(char c) { return c >= '0' && c <= '9'; }
+
+// Helper class for the ParseDigits function.
+// It encapsulates the two return values we need there.
+struct Integer {
+  string_view format;
+  int value;
+
+  // If the next character is a '$', consume it.
+  // Otherwise, make `this` an invalid positional argument.
+  constexpr Integer ConsumePositionalDollar() const {
+    return GetChar(format, 0) == '$' ? Integer{ConsumeFront(format), value}
+                                     : Integer{format, 0};
+  }
+};
+
+constexpr Integer ParseDigits(string_view format, int value = 0) {
+  return IsDigit(GetChar(format, 0))
+             ? ParseDigits(ConsumeFront(format),
+                           10 * value + GetChar(format, 0) - '0')
+             : Integer{format, value};
+}
+
+// Parse digits for a positional argument.
+// The parsing also consumes the '$'.
+constexpr Integer ParsePositional(string_view format) {
+  return ParseDigits(format).ConsumePositionalDollar();
+}
+
+// Parses a single conversion specifier.
+// See ConvParser::Run() for post conditions.
+class ConvParser {
+  constexpr ConvParser SetFormat(string_view format) const {
+    return ConvParser(format, args_, error_, arg_position_, is_positional_);
+  }
+
+  constexpr ConvParser SetArgs(ConvList args) const {
+    return ConvParser(format_, args, error_, arg_position_, is_positional_);
+  }
+
+  constexpr ConvParser SetError(bool error) const {
+    return ConvParser(format_, args_, error_ || error, arg_position_,
+                      is_positional_);
+  }
+
+  constexpr ConvParser SetArgPosition(int arg_position) const {
+    return ConvParser(format_, args_, error_, arg_position, is_positional_);
+  }
+
+  // Consumes the next arg and verifies that it matches `conv`.
+  // `error_` is set if there is no next arg or if it doesn't match `conv`.
+  constexpr ConvParser ConsumeNextArg(char conv) const {
+    return SetArgs(args_.without_front()).SetError(!Contains(args_[0], conv));
+  }
+
+  // Verify that positional argument `i.value` matches `conv`.
+  // `error_` is set if `i.value` is not a valid argument or if it doesn't
+  // match.
+  constexpr ConvParser VerifyPositional(Integer i, char conv) const {
+    return SetFormat(i.format).SetError(!Contains(args_[i.value - 1], conv));
+  }
+
+  // Parse the position of the arg and store it in `arg_position_`.
+  constexpr ConvParser ParseArgPosition(Integer arg) const {
+    return SetFormat(arg.format).SetArgPosition(arg.value);
+  }
+
+  // Consume the flags.
+  constexpr ConvParser ParseFlags() const {
+    return SetFormat(ConsumeAnyOf(format_, "-+ #0"));
+  }
+
+  // Consume the width.
+  // If it is '*', we verify that it matches `args_`. `error_` is set if it
+  // doesn't match.
+  constexpr ConvParser ParseWidth() const {
+    return IsDigit(GetChar(format_, 0))
+               ? SetFormat(ParseDigits(format_).format)
+               : GetChar(format_, 0) == '*'
+                     ? is_positional_
+                           ? VerifyPositional(
+                                 ParsePositional(ConsumeFront(format_)), '*')
+                           : SetFormat(ConsumeFront(format_))
+                                 .ConsumeNextArg('*')
+                     : *this;
+  }
+
+  // Consume the precision.
+  // If it is '*', we verify that it matches `args_`. `error_` is set if it
+  // doesn't match.
+  constexpr ConvParser ParsePrecision() const {
+    return GetChar(format_, 0) != '.'
+               ? *this
+               : GetChar(format_, 1) == '*'
+                     ? is_positional_
+                           ? VerifyPositional(
+                                 ParsePositional(ConsumeFront(format_, 2)), '*')
+                           : SetFormat(ConsumeFront(format_, 2))
+                                 .ConsumeNextArg('*')
+                     : SetFormat(ParseDigits(ConsumeFront(format_)).format);
+  }
+
+  // Consume the length characters.
+  constexpr ConvParser ParseLength() const {
+    return SetFormat(ConsumeAnyOf(format_, "lLhjztq"));
+  }
+
+  // Consume the conversion character and verify that it matches `args_`.
+  // `error_` is set if it doesn't match.
+  constexpr ConvParser ParseConversion() const {
+    return is_positional_
+               ? VerifyPositional({ConsumeFront(format_), arg_position_},
+                                  GetChar(format_, 0))
+               : ConsumeNextArg(GetChar(format_, 0))
+                     .SetFormat(ConsumeFront(format_));
+  }
+
+  constexpr ConvParser(string_view format, ConvList args, bool error,
+                       int arg_position, bool is_positional)
+      : format_(format),
+        args_(args),
+        error_(error),
+        arg_position_(arg_position),
+        is_positional_(is_positional) {}
+
+ public:
+  constexpr ConvParser(string_view format, ConvList args, bool is_positional)
+      : format_(format),
+        args_(args),
+        error_(false),
+        arg_position_(0),
+        is_positional_(is_positional) {}
+
+  // Consume the whole conversion specifier.
+  // `format()` will be set to the character after the conversion character.
+  // `error()` will be set if any of the arguments do not match.
+  constexpr ConvParser Run() const {
+    return (is_positional_ ? ParseArgPosition(ParsePositional(format_)) : *this)
+        .ParseFlags()
+        .ParseWidth()
+        .ParsePrecision()
+        .ParseLength()
+        .ParseConversion();
+  }
+
+  constexpr string_view format() const { return format_; }
+  constexpr ConvList args() const { return args_; }
+  constexpr bool error() const { return error_; }
+  constexpr bool is_positional() const { return is_positional_; }
+
+ private:
+  string_view format_;
+  // Current list of arguments. If we are not in positional mode we will consume
+  // from the front.
+  ConvList args_;
+  bool error_;
+  // Holds the argument position of the conversion character, if we are in
+  // positional mode. Otherwise, it is unspecified.
+  int arg_position_;
+  // Whether we are in positional mode.
+  // It changes the behavior of '*' and where to find the converted argument.
+  bool is_positional_;
+};
+
+// Parses a whole format expression.
+// See FormatParser::Run().
+class FormatParser {
+  static constexpr bool FoundPercent(string_view format) {
+    return format.empty() ||
+           (GetChar(format, 0) == '%' && GetChar(format, 1) != '%');
+  }
+
+  // We use an inner function to increase the recursion limit.
+  // The inner function consumes up to `limit` characters on every run.
+  // This increases the limit from 512 to ~512*limit.
+  static constexpr string_view ConsumeNonPercentInner(string_view format,
+                                                      int limit = 20) {
+    return FoundPercent(format) || !limit
+               ? format
+               : ConsumeNonPercentInner(
+                     ConsumeFront(format, GetChar(format, 0) == '%' &&
+                                                  GetChar(format, 1) == '%'
+                                              ? 2
+                                              : 1),
+                     limit - 1);
+  }
+
+  // Consume characters until the next conversion spec %.
+  // It skips %%.
+  static constexpr string_view ConsumeNonPercent(string_view format) {
+    return FoundPercent(format)
+               ? format
+               : ConsumeNonPercent(ConsumeNonPercentInner(format));
+  }
+
+  static constexpr bool IsPositional(string_view format) {
+    return IsDigit(GetChar(format, 0)) ? IsPositional(ConsumeFront(format))
+                                       : GetChar(format, 0) == '$';
+  }
+
+  constexpr bool RunImpl(bool is_positional) const {
+    // In non-positional mode we require all arguments to be consumed.
+    // In positional mode just reaching the end of the format without errors is
+    // enough.
+    return (format_.empty() && (is_positional || args_.count == 0)) ||
+           (!format_.empty() &&
+            ValidateArg(
+                ConvParser(ConsumeFront(format_), args_, is_positional).Run()));
+  }
+
+  constexpr bool ValidateArg(ConvParser conv) const {
+    return !conv.error() && FormatParser(conv.format(), conv.args())
+                                .RunImpl(conv.is_positional());
+  }
+
+ public:
+  constexpr FormatParser(string_view format, ConvList args)
+      : format_(ConsumeNonPercent(format)), args_(args) {}
+
+  // Runs the parser for `format` and `args`.
+  // It verifies that the format is valid and that all conversion specifiers
+  // match the arguments passed.
+  // In non-positional mode it also verfies that all arguments are consumed.
+  constexpr bool Run() const {
+    return RunImpl(!format_.empty() && IsPositional(ConsumeFront(format_)));
+  }
+
+ private:
+  string_view format_;
+  // Current list of arguments.
+  // If we are not in positional mode we will consume from the front and will
+  // have to be empty in the end.
+  ConvList args_;
+};
+
+template <Conv... C>
+constexpr bool ValidFormatImpl(string_view format) {
+  return FormatParser(format,
+                      {ConvListT<sizeof...(C)>{{C...}}.list, sizeof...(C)})
+      .Run();
+}
+
+#endif  // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_CHECKER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.cc
new file mode 100644
index 0000000..2e5bc2c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.cc	
@@ -0,0 +1,51 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/str_format/extension.h"
+
+#include <errno.h>
+#include <algorithm>
+#include <string>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+std::string Flags::ToString() const {
+  std::string s;
+  s.append(left     ? "-" : "");
+  s.append(show_pos ? "+" : "");
+  s.append(sign_col ? " " : "");
+  s.append(alt      ? "#" : "");
+  s.append(zero     ? "0" : "");
+  return s;
+}
+
+bool FormatSinkImpl::PutPaddedString(string_view v, int w, int p, bool l) {
+  size_t space_remaining = 0;
+  if (w >= 0) space_remaining = w;
+  size_t n = v.size();
+  if (p >= 0) n = std::min(n, static_cast<size_t>(p));
+  string_view shown(v.data(), n);
+  space_remaining = Excess(shown.size(), space_remaining);
+  if (!l) Append(space_remaining, ' ');
+  Append(shown);
+  if (l) Append(space_remaining, ' ');
+  return true;
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.h
new file mode 100644
index 0000000..d166575
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/extension.h	
@@ -0,0 +1,415 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_EXTENSION_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_EXTENSION_H_
+
+#include <limits.h>
+
+#include <cstddef>
+#include <cstring>
+#include <ostream>
+
+#include "absl/base/config.h"
+#include "absl/base/port.h"
+#include "absl/strings/internal/str_format/output.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+class FormatRawSinkImpl {
+ public:
+  // Implicitly convert from any type that provides the hook function as
+  // described above.
+  template <typename T, decltype(str_format_internal::InvokeFlush(
+                            std::declval<T*>(), string_view()))* = nullptr>
+  FormatRawSinkImpl(T* raw)  // NOLINT
+      : sink_(raw), write_(&FormatRawSinkImpl::Flush<T>) {}
+
+  void Write(string_view s) { write_(sink_, s); }
+
+  template <typename T>
+  static FormatRawSinkImpl Extract(T s) {
+    return s.sink_;
+  }
+
+ private:
+  template <typename T>
+  static void Flush(void* r, string_view s) {
+    str_format_internal::InvokeFlush(static_cast<T*>(r), s);
+  }
+
+  void* sink_;
+  void (*write_)(void*, string_view);
+};
+
+// An abstraction to which conversions write their string data.
+class FormatSinkImpl {
+ public:
+  explicit FormatSinkImpl(FormatRawSinkImpl raw) : raw_(raw) {}
+
+  ~FormatSinkImpl() { Flush(); }
+
+  void Flush() {
+    raw_.Write(string_view(buf_, pos_ - buf_));
+    pos_ = buf_;
+  }
+
+  void Append(size_t n, char c) {
+    if (n == 0) return;
+    size_ += n;
+    auto raw_append = [&](size_t count) {
+      memset(pos_, c, count);
+      pos_ += count;
+    };
+    while (n > Avail()) {
+      n -= Avail();
+      if (Avail() > 0) {
+        raw_append(Avail());
+      }
+      Flush();
+    }
+    raw_append(n);
+  }
+
+  void Append(string_view v) {
+    size_t n = v.size();
+    if (n == 0) return;
+    size_ += n;
+    if (n >= Avail()) {
+      Flush();
+      raw_.Write(v);
+      return;
+    }
+    memcpy(pos_, v.data(), n);
+    pos_ += n;
+  }
+
+  size_t size() const { return size_; }
+
+  // Put 'v' to 'sink' with specified width, precision, and left flag.
+  bool PutPaddedString(string_view v, int w, int p, bool l);
+
+  template <typename T>
+  T Wrap() {
+    return T(this);
+  }
+
+  template <typename T>
+  static FormatSinkImpl* Extract(T* s) {
+    return s->sink_;
+  }
+
+ private:
+  size_t Avail() const { return buf_ + sizeof(buf_) - pos_; }
+
+  FormatRawSinkImpl raw_;
+  size_t size_ = 0;
+  char* pos_ = buf_;
+  char buf_[1024];
+};
+
+struct Flags {
+  bool basic : 1;     // fastest conversion: no flags, width, or precision
+  bool left : 1;      // "-"
+  bool show_pos : 1;  // "+"
+  bool sign_col : 1;  // " "
+  bool alt : 1;       // "#"
+  bool zero : 1;      // "0"
+  std::string ToString() const;
+  friend std::ostream& operator<<(std::ostream& os, const Flags& v) {
+    return os << v.ToString();
+  }
+};
+
+// clang-format off
+#define ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(X_VAL, X_SEP) \
+  /* text */ \
+  X_VAL(c) X_SEP X_VAL(C) X_SEP X_VAL(s) X_SEP X_VAL(S) X_SEP \
+  /* ints */ \
+  X_VAL(d) X_SEP X_VAL(i) X_SEP X_VAL(o) X_SEP \
+  X_VAL(u) X_SEP X_VAL(x) X_SEP X_VAL(X) X_SEP \
+  /* floats */ \
+  X_VAL(f) X_SEP X_VAL(F) X_SEP X_VAL(e) X_SEP X_VAL(E) X_SEP \
+  X_VAL(g) X_SEP X_VAL(G) X_SEP X_VAL(a) X_SEP X_VAL(A) X_SEP \
+  /* misc */ \
+  X_VAL(n) X_SEP X_VAL(p)
+
+enum class FormatConversionChar : uint8_t {
+    c, C, s, S,              // text
+    d, i, o, u, x, X,        // int
+    f, F, e, E, g, G, a, A,  // float
+    n, p,                    // misc
+    kNone,
+    none = kNone
+};
+// clang-format on
+
+inline FormatConversionChar FormatConversionCharFromChar(char c) {
+  switch (c) {
+#define ABSL_INTERNAL_X_VAL(id) \
+  case #id[0]:                  \
+    return FormatConversionChar::id;
+    ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_X_VAL, )
+#undef ABSL_INTERNAL_X_VAL
+  }
+  return FormatConversionChar::kNone;
+}
+
+inline int FormatConversionCharRadix(FormatConversionChar c) {
+  switch (c) {
+    case FormatConversionChar::x:
+    case FormatConversionChar::X:
+    case FormatConversionChar::a:
+    case FormatConversionChar::A:
+    case FormatConversionChar::p:
+      return 16;
+    case FormatConversionChar::o:
+      return 8;
+    default:
+      return 10;
+  }
+}
+
+inline bool FormatConversionCharIsUpper(FormatConversionChar c) {
+  switch (c) {
+    case FormatConversionChar::X:
+    case FormatConversionChar::F:
+    case FormatConversionChar::E:
+    case FormatConversionChar::G:
+    case FormatConversionChar::A:
+      return true;
+    default:
+      return false;
+  }
+}
+
+inline bool FormatConversionCharIsSigned(FormatConversionChar c) {
+  switch (c) {
+    case FormatConversionChar::d:
+    case FormatConversionChar::i:
+      return true;
+    default:
+      return false;
+  }
+}
+
+inline bool FormatConversionCharIsIntegral(FormatConversionChar c) {
+  switch (c) {
+    case FormatConversionChar::d:
+    case FormatConversionChar::i:
+    case FormatConversionChar::u:
+    case FormatConversionChar::o:
+    case FormatConversionChar::x:
+    case FormatConversionChar::X:
+      return true;
+    default:
+      return false;
+  }
+}
+
+inline bool FormatConversionCharIsFloat(FormatConversionChar c) {
+  switch (c) {
+    case FormatConversionChar::a:
+    case FormatConversionChar::e:
+    case FormatConversionChar::f:
+    case FormatConversionChar::g:
+    case FormatConversionChar::A:
+    case FormatConversionChar::E:
+    case FormatConversionChar::F:
+    case FormatConversionChar::G:
+      return true;
+    default:
+      return false;
+  }
+}
+
+inline char FormatConversionCharToChar(FormatConversionChar c) {
+  switch (c) {
+#define ABSL_INTERNAL_X_VAL(e)  \
+  case FormatConversionChar::e: \
+    return #e[0];
+#define ABSL_INTERNAL_X_SEP
+    ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_X_VAL,
+                                           ABSL_INTERNAL_X_SEP)
+    case FormatConversionChar::kNone:
+      return '\0';
+#undef ABSL_INTERNAL_X_VAL
+#undef ABSL_INTERNAL_X_SEP
+  }
+  return '\0';
+}
+
+// The associated char.
+inline std::ostream& operator<<(std::ostream& os, FormatConversionChar v) {
+  char c = FormatConversionCharToChar(v);
+  if (!c) c = '?';
+  return os << c;
+}
+
+struct FormatConversionSpecImplFriend;
+
+class FormatConversionSpec {
+ public:
+  // Width and precison are not specified, no flags are set.
+  bool is_basic() const { return flags_.basic; }
+  bool has_left_flag() const { return flags_.left; }
+  bool has_show_pos_flag() const { return flags_.show_pos; }
+  bool has_sign_col_flag() const { return flags_.sign_col; }
+  bool has_alt_flag() const { return flags_.alt; }
+  bool has_zero_flag() const { return flags_.zero; }
+
+  FormatConversionChar conversion_char() const {
+    // Keep this field first in the struct . It generates better code when
+    // accessing it when ConversionSpec is passed by value in registers.
+    static_assert(offsetof(FormatConversionSpec, conv_) == 0, "");
+    return conv_;
+  }
+
+  // Returns the specified width. If width is unspecfied, it returns a negative
+  // value.
+  int width() const { return width_; }
+  // Returns the specified precision. If precision is unspecfied, it returns a
+  // negative value.
+  int precision() const { return precision_; }
+
+  // Deprecated (use has_x_flag() instead).
+  Flags flags() const { return flags_; }
+  // Deprecated
+  FormatConversionChar conv() const { return conversion_char(); }
+
+ private:
+  friend struct str_format_internal::FormatConversionSpecImplFriend;
+  FormatConversionChar conv_ = FormatConversionChar::kNone;
+  Flags flags_;
+  int width_;
+  int precision_;
+};
+
+struct FormatConversionSpecImplFriend final {
+  static void SetFlags(Flags f, FormatConversionSpec* conv) {
+    conv->flags_ = f;
+  }
+  static void SetConversionChar(FormatConversionChar c,
+                                FormatConversionSpec* conv) {
+    conv->conv_ = c;
+  }
+  static void SetWidth(int w, FormatConversionSpec* conv) { conv->width_ = w; }
+  static void SetPrecision(int p, FormatConversionSpec* conv) {
+    conv->precision_ = p;
+  }
+  static std::string FlagsToString(const FormatConversionSpec& spec) {
+    return spec.flags_.ToString();
+  }
+};
+
+constexpr uint64_t FormatConversionCharToConvValue(char conv) {
+  return
+#define ABSL_INTERNAL_CHAR_SET_CASE(c)                                       \
+  conv == #c[0]                                                              \
+      ? (uint64_t{1} << (1 + static_cast<uint8_t>(FormatConversionChar::c))) \
+      :
+      ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_CHAR_SET_CASE, )
+#undef ABSL_INTERNAL_CHAR_SET_CASE
+                  conv == '*'
+          ? 1
+          : 0;
+}
+
+enum class FormatConversionCharSet : uint64_t {
+#define ABSL_INTERNAL_CHAR_SET_CASE(c) \
+  c = FormatConversionCharToConvValue(#c[0]),
+  ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_CHAR_SET_CASE, )
+#undef ABSL_INTERNAL_CHAR_SET_CASE
+
+  // Used for width/precision '*' specification.
+  kStar = FormatConversionCharToConvValue('*'),
+  // Some predefined values:
+  kIntegral = d | i | u | o | x | X,
+  kFloating = a | e | f | g | A | E | F | G,
+  kNumeric = kIntegral | kFloating,
+  kString = s,
+  kPointer = p,
+
+  // The following are deprecated
+  star = kStar,
+  integral = kIntegral,
+  floating = kFloating,
+  numeric = kNumeric,
+  string = kString,
+  pointer = kPointer
+};
+
+// Type safe OR operator.
+// We need this for two reasons:
+//  1. operator| on enums makes them decay to integers and the result is an
+//     integer. We need the result to stay as an enum.
+//  2. We use "enum class" which would not work even if we accepted the decay.
+constexpr FormatConversionCharSet operator|(FormatConversionCharSet a,
+                                            FormatConversionCharSet b) {
+  return FormatConversionCharSet(static_cast<uint64_t>(a) |
+                                 static_cast<uint64_t>(b));
+}
+
+// Get a conversion with a single character in it.
+constexpr FormatConversionCharSet ConversionCharToConv(char c) {
+  return FormatConversionCharSet(FormatConversionCharToConvValue(c));
+}
+
+// Checks whether `c` exists in `set`.
+constexpr bool Contains(FormatConversionCharSet set, char c) {
+  return (static_cast<uint64_t>(set) & FormatConversionCharToConvValue(c)) != 0;
+}
+
+// Checks whether all the characters in `c` are contained in `set`
+constexpr bool Contains(FormatConversionCharSet set,
+                        FormatConversionCharSet c) {
+  return (static_cast<uint64_t>(set) & static_cast<uint64_t>(c)) ==
+         static_cast<uint64_t>(c);
+}
+
+// Return type of the AbslFormatConvert() functions.
+// The FormatConversionCharSet template parameter is used to inform the
+// framework of what conversion characters are supported by that
+// AbslFormatConvert routine.
+template <FormatConversionCharSet C>
+struct FormatConvertResult {
+  static constexpr FormatConversionCharSet kConv = C;
+  bool value;
+};
+
+template <FormatConversionCharSet C>
+constexpr FormatConversionCharSet FormatConvertResult<C>::kConv;
+
+// Return capacity - used, clipped to a minimum of 0.
+inline size_t Excess(size_t used, size_t capacity) {
+  return used < capacity ? capacity - used : 0;
+}
+
+// Type alias for use during migration.
+using ConversionChar = FormatConversionChar;
+using ConversionSpec = FormatConversionSpec;
+using Conv = FormatConversionCharSet;
+template <FormatConversionCharSet C>
+using ConvertResult = FormatConvertResult<C>;
+
+}  // namespace str_format_internal
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_EXTENSION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.cc
new file mode 100644
index 0000000..d4c647c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.cc	
@@ -0,0 +1,493 @@
+#include "absl/strings/internal/str_format/float_conversion.h"
+
+#include <string.h>
+#include <algorithm>
+#include <cassert>
+#include <cmath>
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+namespace {
+
+char *CopyStringTo(string_view v, char *out) {
+  std::memcpy(out, v.data(), v.size());
+  return out + v.size();
+}
+
+template <typename Float>
+bool FallbackToSnprintf(const Float v, const ConversionSpec &conv,
+                        FormatSinkImpl *sink) {
+  int w = conv.width() >= 0 ? conv.width() : 0;
+  int p = conv.precision() >= 0 ? conv.precision() : -1;
+  char fmt[32];
+  {
+    char *fp = fmt;
+    *fp++ = '%';
+    fp = CopyStringTo(FormatConversionSpecImplFriend::FlagsToString(conv), fp);
+    fp = CopyStringTo("*.*", fp);
+    if (std::is_same<long double, Float>()) {
+      *fp++ = 'L';
+    }
+    *fp++ = FormatConversionCharToChar(conv.conv());
+    *fp = 0;
+    assert(fp < fmt + sizeof(fmt));
+  }
+  std::string space(512, '\0');
+  string_view result;
+  while (true) {
+    int n = snprintf(&space[0], space.size(), fmt, w, p, v);
+    if (n < 0) return false;
+    if (static_cast<size_t>(n) < space.size()) {
+      result = string_view(space.data(), n);
+      break;
+    }
+    space.resize(n + 1);
+  }
+  sink->Append(result);
+  return true;
+}
+
+// 128-bits in decimal: ceil(128*log(2)/log(10))
+//   or std::numeric_limits<__uint128_t>::digits10
+constexpr int kMaxFixedPrecision = 39;
+
+constexpr int kBufferLength = /*sign*/ 1 +
+                              /*integer*/ kMaxFixedPrecision +
+                              /*point*/ 1 +
+                              /*fraction*/ kMaxFixedPrecision +
+                              /*exponent e+123*/ 5;
+
+struct Buffer {
+  void push_front(char c) {
+    assert(begin > data);
+    *--begin = c;
+  }
+  void push_back(char c) {
+    assert(end < data + sizeof(data));
+    *end++ = c;
+  }
+  void pop_back() {
+    assert(begin < end);
+    --end;
+  }
+
+  char &back() {
+    assert(begin < end);
+    return end[-1];
+  }
+
+  char last_digit() const { return end[-1] == '.' ? end[-2] : end[-1]; }
+
+  int size() const { return static_cast<int>(end - begin); }
+
+  char data[kBufferLength];
+  char *begin;
+  char *end;
+};
+
+enum class FormatStyle { Fixed, Precision };
+
+// If the value is Inf or Nan, print it and return true.
+// Otherwise, return false.
+template <typename Float>
+bool ConvertNonNumericFloats(char sign_char, Float v,
+                             const ConversionSpec &conv, FormatSinkImpl *sink) {
+  char text[4], *ptr = text;
+  if (sign_char) *ptr++ = sign_char;
+  if (std::isnan(v)) {
+    ptr = std::copy_n(FormatConversionCharIsUpper(conv.conv()) ? "NAN" : "nan",
+                      3, ptr);
+  } else if (std::isinf(v)) {
+    ptr = std::copy_n(FormatConversionCharIsUpper(conv.conv()) ? "INF" : "inf",
+                      3, ptr);
+  } else {
+    return false;
+  }
+
+  return sink->PutPaddedString(string_view(text, ptr - text), conv.width(), -1,
+                               conv.flags().left);
+}
+
+// Round up the last digit of the value.
+// It will carry over and potentially overflow. 'exp' will be adjusted in that
+// case.
+template <FormatStyle mode>
+void RoundUp(Buffer *buffer, int *exp) {
+  char *p = &buffer->back();
+  while (p >= buffer->begin && (*p == '9' || *p == '.')) {
+    if (*p == '9') *p = '0';
+    --p;
+  }
+
+  if (p < buffer->begin) {
+    *p = '1';
+    buffer->begin = p;
+    if (mode == FormatStyle::Precision) {
+      std::swap(p[1], p[2]);  // move the .
+      ++*exp;
+      buffer->pop_back();
+    }
+  } else {
+    ++*p;
+  }
+}
+
+void PrintExponent(int exp, char e, Buffer *out) {
+  out->push_back(e);
+  if (exp < 0) {
+    out->push_back('-');
+    exp = -exp;
+  } else {
+    out->push_back('+');
+  }
+  // Exponent digits.
+  if (exp > 99) {
+    out->push_back(exp / 100 + '0');
+    out->push_back(exp / 10 % 10 + '0');
+    out->push_back(exp % 10 + '0');
+  } else {
+    out->push_back(exp / 10 + '0');
+    out->push_back(exp % 10 + '0');
+  }
+}
+
+template <typename Float, typename Int>
+constexpr bool CanFitMantissa() {
+  return
+#if defined(__clang__) && !defined(__SSE3__)
+      // Workaround for clang bug: https://bugs.llvm.org/show_bug.cgi?id=38289
+      // Casting from long double to uint64_t is miscompiled and drops bits.
+      (!std::is_same<Float, long double>::value ||
+       !std::is_same<Int, uint64_t>::value) &&
+#endif
+      std::numeric_limits<Float>::digits <= std::numeric_limits<Int>::digits;
+}
+
+template <typename Float>
+struct Decomposed {
+  Float mantissa;
+  int exponent;
+};
+
+// Decompose the double into an integer mantissa and an exponent.
+template <typename Float>
+Decomposed<Float> Decompose(Float v) {
+  int exp;
+  Float m = std::frexp(v, &exp);
+  m = std::ldexp(m, std::numeric_limits<Float>::digits);
+  exp -= std::numeric_limits<Float>::digits;
+  return {m, exp};
+}
+
+// Print 'digits' as decimal.
+// In Fixed mode, we add a '.' at the end.
+// In Precision mode, we add a '.' after the first digit.
+template <FormatStyle mode, typename Int>
+int PrintIntegralDigits(Int digits, Buffer *out) {
+  int printed = 0;
+  if (digits) {
+    for (; digits; digits /= 10) out->push_front(digits % 10 + '0');
+    printed = out->size();
+    if (mode == FormatStyle::Precision) {
+      out->push_front(*out->begin);
+      out->begin[1] = '.';
+    } else {
+      out->push_back('.');
+    }
+  } else if (mode == FormatStyle::Fixed) {
+    out->push_front('0');
+    out->push_back('.');
+    printed = 1;
+  }
+  return printed;
+}
+
+// Back out 'extra_digits' digits and round up if necessary.
+bool RemoveExtraPrecision(int extra_digits, bool has_leftover_value,
+                          Buffer *out, int *exp_out) {
+  if (extra_digits <= 0) return false;
+
+  // Back out the extra digits
+  out->end -= extra_digits;
+
+  bool needs_to_round_up = [&] {
+    // We look at the digit just past the end.
+    // There must be 'extra_digits' extra valid digits after end.
+    if (*out->end > '5') return true;
+    if (*out->end < '5') return false;
+    if (has_leftover_value || std::any_of(out->end + 1, out->end + extra_digits,
+                                          [](char c) { return c != '0'; }))
+      return true;
+
+    // Ends in ...50*, round to even.
+    return out->last_digit() % 2 == 1;
+  }();
+
+  if (needs_to_round_up) {
+    RoundUp<FormatStyle::Precision>(out, exp_out);
+  }
+  return true;
+}
+
+// Print the value into the buffer.
+// This will not include the exponent, which will be returned in 'exp_out' for
+// Precision mode.
+template <typename Int, typename Float, FormatStyle mode>
+bool FloatToBufferImpl(Int int_mantissa, int exp, int precision, Buffer *out,
+                       int *exp_out) {
+  assert((CanFitMantissa<Float, Int>()));
+
+  const int int_bits = std::numeric_limits<Int>::digits;
+
+  // In precision mode, we start printing one char to the right because it will
+  // also include the '.'
+  // In fixed mode we put the dot afterwards on the right.
+  out->begin = out->end =
+      out->data + 1 + kMaxFixedPrecision + (mode == FormatStyle::Precision);
+
+  if (exp >= 0) {
+    if (std::numeric_limits<Float>::digits + exp > int_bits) {
+      // The value will overflow the Int
+      return false;
+    }
+    int digits_printed = PrintIntegralDigits<mode>(int_mantissa << exp, out);
+    int digits_to_zero_pad = precision;
+    if (mode == FormatStyle::Precision) {
+      *exp_out = digits_printed - 1;
+      digits_to_zero_pad -= digits_printed - 1;
+      if (RemoveExtraPrecision(-digits_to_zero_pad, false, out, exp_out)) {
+        return true;
+      }
+    }
+    for (; digits_to_zero_pad-- > 0;) out->push_back('0');
+    return true;
+  }
+
+  exp = -exp;
+  // We need at least 4 empty bits for the next decimal digit.
+  // We will multiply by 10.
+  if (exp > int_bits - 4) return false;
+
+  const Int mask = (Int{1} << exp) - 1;
+
+  // Print the integral part first.
+  int digits_printed = PrintIntegralDigits<mode>(int_mantissa >> exp, out);
+  int_mantissa &= mask;
+
+  int fractional_count = precision;
+  if (mode == FormatStyle::Precision) {
+    if (digits_printed == 0) {
+      // Find the first non-zero digit, when in Precision mode.
+      *exp_out = 0;
+      if (int_mantissa) {
+        while (int_mantissa <= mask) {
+          int_mantissa *= 10;
+          --*exp_out;
+        }
+      }
+      out->push_front(static_cast<char>(int_mantissa >> exp) + '0');
+      out->push_back('.');
+      int_mantissa &= mask;
+    } else {
+      // We already have a digit, and a '.'
+      *exp_out = digits_printed - 1;
+      fractional_count -= *exp_out;
+      if (RemoveExtraPrecision(-fractional_count, int_mantissa != 0, out,
+                               exp_out)) {
+        // If we had enough digits, return right away.
+        // The code below will try to round again otherwise.
+        return true;
+      }
+    }
+  }
+
+  auto get_next_digit = [&] {
+    int_mantissa *= 10;
+    int digit = static_cast<int>(int_mantissa >> exp);
+    int_mantissa &= mask;
+    return digit;
+  };
+
+  // Print fractional_count more digits, if available.
+  for (; fractional_count > 0; --fractional_count) {
+    out->push_back(get_next_digit() + '0');
+  }
+
+  int next_digit = get_next_digit();
+  if (next_digit > 5 ||
+      (next_digit == 5 && (int_mantissa || out->last_digit() % 2 == 1))) {
+    RoundUp<mode>(out, exp_out);
+  }
+
+  return true;
+}
+
+template <FormatStyle mode, typename Float>
+bool FloatToBuffer(Decomposed<Float> decomposed, int precision, Buffer *out,
+                   int *exp) {
+  if (precision > kMaxFixedPrecision) return false;
+
+  // Try with uint64_t.
+  if (CanFitMantissa<Float, std::uint64_t>() &&
+      FloatToBufferImpl<std::uint64_t, Float, mode>(
+          static_cast<std::uint64_t>(decomposed.mantissa),
+          static_cast<std::uint64_t>(decomposed.exponent), precision, out, exp))
+    return true;
+
+#if defined(ABSL_HAVE_INTRINSIC_INT128)
+  // If that is not enough, try with __uint128_t.
+  return CanFitMantissa<Float, __uint128_t>() &&
+         FloatToBufferImpl<__uint128_t, Float, mode>(
+             static_cast<__uint128_t>(decomposed.mantissa),
+             static_cast<__uint128_t>(decomposed.exponent), precision, out,
+             exp);
+#endif
+  return false;
+}
+
+void WriteBufferToSink(char sign_char, string_view str,
+                       const ConversionSpec &conv, FormatSinkImpl *sink) {
+  int left_spaces = 0, zeros = 0, right_spaces = 0;
+  int missing_chars =
+      conv.width() >= 0 ? std::max(conv.width() - static_cast<int>(str.size()) -
+                                       static_cast<int>(sign_char != 0),
+                                   0)
+                        : 0;
+  if (conv.flags().left) {
+    right_spaces = missing_chars;
+  } else if (conv.flags().zero) {
+    zeros = missing_chars;
+  } else {
+    left_spaces = missing_chars;
+  }
+
+  sink->Append(left_spaces, ' ');
+  if (sign_char) sink->Append(1, sign_char);
+  sink->Append(zeros, '0');
+  sink->Append(str);
+  sink->Append(right_spaces, ' ');
+}
+
+template <typename Float>
+bool FloatToSink(const Float v, const ConversionSpec &conv,
+                 FormatSinkImpl *sink) {
+  // Print the sign or the sign column.
+  Float abs_v = v;
+  char sign_char = 0;
+  if (std::signbit(abs_v)) {
+    sign_char = '-';
+    abs_v = -abs_v;
+  } else if (conv.flags().show_pos) {
+    sign_char = '+';
+  } else if (conv.flags().sign_col) {
+    sign_char = ' ';
+  }
+
+  // Print nan/inf.
+  if (ConvertNonNumericFloats(sign_char, abs_v, conv, sink)) {
+    return true;
+  }
+
+  int precision = conv.precision() < 0 ? 6 : conv.precision();
+
+  int exp = 0;
+
+  auto decomposed = Decompose(abs_v);
+
+  Buffer buffer;
+
+  switch (conv.conv()) {
+    case ConversionChar::f:
+    case ConversionChar::F:
+      if (!FloatToBuffer<FormatStyle::Fixed>(decomposed, precision, &buffer,
+                                             nullptr)) {
+        return FallbackToSnprintf(v, conv, sink);
+      }
+      if (!conv.flags().alt && buffer.back() == '.') buffer.pop_back();
+      break;
+
+    case ConversionChar::e:
+    case ConversionChar::E:
+      if (!FloatToBuffer<FormatStyle::Precision>(decomposed, precision, &buffer,
+                                                 &exp)) {
+        return FallbackToSnprintf(v, conv, sink);
+      }
+      if (!conv.flags().alt && buffer.back() == '.') buffer.pop_back();
+      PrintExponent(exp, FormatConversionCharIsUpper(conv.conv()) ? 'E' : 'e',
+                    &buffer);
+      break;
+
+    case ConversionChar::g:
+    case ConversionChar::G:
+      precision = std::max(0, precision - 1);
+      if (!FloatToBuffer<FormatStyle::Precision>(decomposed, precision, &buffer,
+                                                 &exp)) {
+        return FallbackToSnprintf(v, conv, sink);
+      }
+      if (precision + 1 > exp && exp >= -4) {
+        if (exp < 0) {
+          // Have 1.23456, needs 0.00123456
+          // Move the first digit
+          buffer.begin[1] = *buffer.begin;
+          // Add some zeros
+          for (; exp < -1; ++exp) *buffer.begin-- = '0';
+          *buffer.begin-- = '.';
+          *buffer.begin = '0';
+        } else if (exp > 0) {
+          // Have 1.23456, needs 1234.56
+          // Move the '.' exp positions to the right.
+          std::rotate(buffer.begin + 1, buffer.begin + 2,
+                      buffer.begin + exp + 2);
+        }
+        exp = 0;
+      }
+      if (!conv.flags().alt) {
+        while (buffer.back() == '0') buffer.pop_back();
+        if (buffer.back() == '.') buffer.pop_back();
+      }
+      if (exp) {
+        PrintExponent(exp, FormatConversionCharIsUpper(conv.conv()) ? 'E' : 'e',
+                      &buffer);
+      }
+      break;
+
+    case ConversionChar::a:
+    case ConversionChar::A:
+      return FallbackToSnprintf(v, conv, sink);
+
+    default:
+      return false;
+  }
+
+  WriteBufferToSink(sign_char,
+                    string_view(buffer.begin, buffer.end - buffer.begin), conv,
+                    sink);
+
+  return true;
+}
+
+}  // namespace
+
+bool ConvertFloatImpl(long double v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink) {
+  return FloatToSink(v, conv, sink);
+}
+
+bool ConvertFloatImpl(float v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink) {
+  return FloatToSink(v, conv, sink);
+}
+
+bool ConvertFloatImpl(double v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink) {
+  return FloatToSink(v, conv, sink);
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.h
new file mode 100644
index 0000000..49a6a63
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/float_conversion.h	
@@ -0,0 +1,23 @@
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_FLOAT_CONVERSION_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_FLOAT_CONVERSION_H_
+
+#include "absl/strings/internal/str_format/extension.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+bool ConvertFloatImpl(float v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink);
+
+bool ConvertFloatImpl(double v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink);
+
+bool ConvertFloatImpl(long double v, const ConversionSpec &conv,
+                      FormatSinkImpl *sink);
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_FLOAT_CONVERSION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.cc
new file mode 100644
index 0000000..c4b2470
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.cc	
@@ -0,0 +1,72 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/str_format/output.h"
+
+#include <errno.h>
+#include <cstring>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+namespace {
+struct ClearErrnoGuard {
+  ClearErrnoGuard() : old_value(errno) { errno = 0; }
+  ~ClearErrnoGuard() {
+    if (!errno) errno = old_value;
+  }
+  int old_value;
+};
+}  // namespace
+
+void BufferRawSink::Write(string_view v) {
+  size_t to_write = std::min(v.size(), size_);
+  std::memcpy(buffer_, v.data(), to_write);
+  buffer_ += to_write;
+  size_ -= to_write;
+  total_written_ += v.size();
+}
+
+void FILERawSink::Write(string_view v) {
+  while (!v.empty() && !error_) {
+    // Reset errno to zero in case the libc implementation doesn't set errno
+    // when a failure occurs.
+    ClearErrnoGuard guard;
+
+    if (size_t result = std::fwrite(v.data(), 1, v.size(), output_)) {
+      // Some progress was made.
+      count_ += result;
+      v.remove_prefix(result);
+    } else {
+      if (errno == EINTR) {
+        continue;
+      } else if (errno) {
+        error_ = errno;
+      } else if (std::ferror(output_)) {
+        // Non-POSIX compliant libc implementations may not set errno, so we
+        // have check the streams error indicator.
+        error_ = EBADF;
+      } else {
+        // We're likely on a non-POSIX system that encountered EINTR but had no
+        // way of reporting it.
+        continue;
+      }
+    }
+  }
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.h
new file mode 100644
index 0000000..28b288b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/output.h	
@@ -0,0 +1,104 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Output extension hooks for the Format library.
+// `internal::InvokeFlush` calls the appropriate flush function for the
+// specified output argument.
+// `BufferRawSink` is a simple output sink for a char buffer. Used by SnprintF.
+// `FILERawSink` is a std::FILE* based sink. Used by PrintF and FprintF.
+
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_OUTPUT_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_OUTPUT_H_
+
+#include <cstdio>
+#include <ostream>
+#include <string>
+
+#include "absl/base/port.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class Cord;
+
+namespace str_format_internal {
+
+// RawSink implementation that writes into a char* buffer.
+// It will not overflow the buffer, but will keep the total count of chars
+// that would have been written.
+class BufferRawSink {
+ public:
+  BufferRawSink(char* buffer, size_t size) : buffer_(buffer), size_(size) {}
+
+  size_t total_written() const { return total_written_; }
+  void Write(string_view v);
+
+ private:
+  char* buffer_;
+  size_t size_;
+  size_t total_written_ = 0;
+};
+
+// RawSink implementation that writes into a FILE*.
+// It keeps track of the total number of bytes written and any error encountered
+// during the writes.
+class FILERawSink {
+ public:
+  explicit FILERawSink(std::FILE* output) : output_(output) {}
+
+  void Write(string_view v);
+
+  size_t count() const { return count_; }
+  int error() const { return error_; }
+
+ private:
+  std::FILE* output_;
+  int error_ = 0;
+  size_t count_ = 0;
+};
+
+// Provide RawSink integration with common types from the STL.
+inline void AbslFormatFlush(std::string* out, string_view s) {
+  out->append(s.data(), s.size());
+}
+inline void AbslFormatFlush(std::ostream* out, string_view s) {
+  out->write(s.data(), s.size());
+}
+
+template <class AbslCord, typename = typename std::enable_if<
+                              std::is_same<AbslCord, absl::Cord>::value>::type>
+inline void AbslFormatFlush(AbslCord* out, string_view s) {
+  out->Append(s);
+}
+
+inline void AbslFormatFlush(FILERawSink* sink, string_view v) {
+  sink->Write(v);
+}
+
+inline void AbslFormatFlush(BufferRawSink* sink, string_view v) {
+  sink->Write(v);
+}
+
+template <typename T>
+auto InvokeFlush(T* out, string_view s)
+    -> decltype(str_format_internal::AbslFormatFlush(out, s)) {
+  str_format_internal::AbslFormatFlush(out, s);
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_OUTPUT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.cc
new file mode 100644
index 0000000..aab68db
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.cc	
@@ -0,0 +1,334 @@
+#include "absl/strings/internal/str_format/parser.h"
+
+#include <assert.h>
+#include <string.h>
+#include <wchar.h>
+#include <cctype>
+#include <cstdint>
+
+#include <algorithm>
+#include <initializer_list>
+#include <limits>
+#include <ostream>
+#include <string>
+#include <unordered_set>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+using CC = ConversionChar;
+using LM = LengthMod;
+
+ABSL_CONST_INIT const ConvTag kTags[256] = {
+    {},    {},    {},    {},    {},    {},    {},    {},     // 00-07
+    {},    {},    {},    {},    {},    {},    {},    {},     // 08-0f
+    {},    {},    {},    {},    {},    {},    {},    {},     // 10-17
+    {},    {},    {},    {},    {},    {},    {},    {},     // 18-1f
+    {},    {},    {},    {},    {},    {},    {},    {},     // 20-27
+    {},    {},    {},    {},    {},    {},    {},    {},     // 28-2f
+    {},    {},    {},    {},    {},    {},    {},    {},     // 30-37
+    {},    {},    {},    {},    {},    {},    {},    {},     // 38-3f
+    {},    CC::A, {},    CC::C, {},    CC::E, CC::F, CC::G,  // @ABCDEFG
+    {},    {},    {},    {},    LM::L, {},    {},    {},     // HIJKLMNO
+    {},    {},    {},    CC::S, {},    {},    {},    {},     // PQRSTUVW
+    CC::X, {},    {},    {},    {},    {},    {},    {},     // XYZ[\]^_
+    {},    CC::a, {},    CC::c, CC::d, CC::e, CC::f, CC::g,  // `abcdefg
+    LM::h, CC::i, LM::j, {},    LM::l, {},    CC::n, CC::o,  // hijklmno
+    CC::p, LM::q, {},    CC::s, LM::t, CC::u, {},    {},     // pqrstuvw
+    CC::x, {},    LM::z, {},    {},    {},    {},    {},     // xyz{|}!
+    {},    {},    {},    {},    {},    {},    {},    {},     // 80-87
+    {},    {},    {},    {},    {},    {},    {},    {},     // 88-8f
+    {},    {},    {},    {},    {},    {},    {},    {},     // 90-97
+    {},    {},    {},    {},    {},    {},    {},    {},     // 98-9f
+    {},    {},    {},    {},    {},    {},    {},    {},     // a0-a7
+    {},    {},    {},    {},    {},    {},    {},    {},     // a8-af
+    {},    {},    {},    {},    {},    {},    {},    {},     // b0-b7
+    {},    {},    {},    {},    {},    {},    {},    {},     // b8-bf
+    {},    {},    {},    {},    {},    {},    {},    {},     // c0-c7
+    {},    {},    {},    {},    {},    {},    {},    {},     // c8-cf
+    {},    {},    {},    {},    {},    {},    {},    {},     // d0-d7
+    {},    {},    {},    {},    {},    {},    {},    {},     // d8-df
+    {},    {},    {},    {},    {},    {},    {},    {},     // e0-e7
+    {},    {},    {},    {},    {},    {},    {},    {},     // e8-ef
+    {},    {},    {},    {},    {},    {},    {},    {},     // f0-f7
+    {},    {},    {},    {},    {},    {},    {},    {},     // f8-ff
+};
+
+namespace {
+
+bool CheckFastPathSetting(const UnboundConversion& conv) {
+  bool should_be_basic = !conv.flags.left &&      //
+                         !conv.flags.show_pos &&  //
+                         !conv.flags.sign_col &&  //
+                         !conv.flags.alt &&       //
+                         !conv.flags.zero &&      //
+                         (conv.width.value() == -1) &&
+                         (conv.precision.value() == -1);
+  if (should_be_basic != conv.flags.basic) {
+    fprintf(stderr,
+            "basic=%d left=%d show_pos=%d sign_col=%d alt=%d zero=%d "
+            "width=%d precision=%d\n",
+            conv.flags.basic, conv.flags.left, conv.flags.show_pos,
+            conv.flags.sign_col, conv.flags.alt, conv.flags.zero,
+            conv.width.value(), conv.precision.value());
+  }
+  return should_be_basic == conv.flags.basic;
+}
+
+template <bool is_positional>
+const char *ConsumeConversion(const char *pos, const char *const end,
+                              UnboundConversion *conv, int *next_arg) {
+  const char* const original_pos = pos;
+  char c;
+  // Read the next char into `c` and update `pos`. Returns false if there are
+  // no more chars to read.
+#define ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR()          \
+  do {                                                  \
+    if (ABSL_PREDICT_FALSE(pos == end)) return nullptr; \
+    c = *pos++;                                         \
+  } while (0)
+
+  const auto parse_digits = [&] {
+    int digits = c - '0';
+    // We do not want to overflow `digits` so we consume at most digits10
+    // digits. If there are more digits the parsing will fail later on when the
+    // digit doesn't match the expected characters.
+    int num_digits = std::numeric_limits<int>::digits10;
+    for (;;) {
+      if (ABSL_PREDICT_FALSE(pos == end)) break;
+      c = *pos++;
+      if (!std::isdigit(c)) break;
+      --num_digits;
+      if (ABSL_PREDICT_FALSE(!num_digits)) break;
+      digits = 10 * digits + c - '0';
+    }
+    return digits;
+  };
+
+  if (is_positional) {
+    ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+    if (ABSL_PREDICT_FALSE(c < '1' || c > '9')) return nullptr;
+    conv->arg_position = parse_digits();
+    assert(conv->arg_position > 0);
+    if (ABSL_PREDICT_FALSE(c != '$')) return nullptr;
+  }
+
+  ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+
+  // We should start with the basic flag on.
+  assert(conv->flags.basic);
+
+  // Any non alpha character makes this conversion not basic.
+  // This includes flags (-+ #0), width (1-9, *) or precision (.).
+  // All conversion characters and length modifiers are alpha characters.
+  if (c < 'A') {
+    conv->flags.basic = false;
+
+    for (; c <= '0';) {
+      // FIXME: We might be able to speed this up reusing the lookup table from
+      // above. It might require changing Flags to be a plain integer where we
+      // can |= a value.
+      switch (c) {
+        case '-':
+          conv->flags.left = true;
+          break;
+        case '+':
+          conv->flags.show_pos = true;
+          break;
+        case ' ':
+          conv->flags.sign_col = true;
+          break;
+        case '#':
+          conv->flags.alt = true;
+          break;
+        case '0':
+          conv->flags.zero = true;
+          break;
+        default:
+          goto flags_done;
+      }
+      ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+    }
+flags_done:
+
+    if (c <= '9') {
+      if (c >= '0') {
+        int maybe_width = parse_digits();
+        if (!is_positional && c == '$') {
+          if (ABSL_PREDICT_FALSE(*next_arg != 0)) return nullptr;
+          // Positional conversion.
+          *next_arg = -1;
+          conv->flags = Flags();
+          conv->flags.basic = true;
+          return ConsumeConversion<true>(original_pos, end, conv, next_arg);
+        }
+        conv->width.set_value(maybe_width);
+      } else if (c == '*') {
+        ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+        if (is_positional) {
+          if (ABSL_PREDICT_FALSE(c < '1' || c > '9')) return nullptr;
+          conv->width.set_from_arg(parse_digits());
+          if (ABSL_PREDICT_FALSE(c != '$')) return nullptr;
+          ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+        } else {
+          conv->width.set_from_arg(++*next_arg);
+        }
+      }
+    }
+
+    if (c == '.') {
+      ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+      if (std::isdigit(c)) {
+        conv->precision.set_value(parse_digits());
+      } else if (c == '*') {
+        ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+        if (is_positional) {
+          if (ABSL_PREDICT_FALSE(c < '1' || c > '9')) return nullptr;
+          conv->precision.set_from_arg(parse_digits());
+          if (c != '$') return nullptr;
+          ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+        } else {
+          conv->precision.set_from_arg(++*next_arg);
+        }
+      } else {
+        conv->precision.set_value(0);
+      }
+    }
+  }
+
+  auto tag = GetTagForChar(c);
+
+  if (ABSL_PREDICT_FALSE(!tag.is_conv())) {
+    if (ABSL_PREDICT_FALSE(!tag.is_length())) return nullptr;
+
+    // It is a length modifier.
+    using str_format_internal::LengthMod;
+    LengthMod length_mod = tag.as_length();
+    ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+    if (c == 'h' && length_mod == LengthMod::h) {
+      conv->length_mod = LengthMod::hh;
+      ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+    } else if (c == 'l' && length_mod == LengthMod::l) {
+      conv->length_mod = LengthMod::ll;
+      ABSL_FORMAT_PARSER_INTERNAL_GET_CHAR();
+    } else {
+      conv->length_mod = length_mod;
+    }
+    tag = GetTagForChar(c);
+    if (ABSL_PREDICT_FALSE(!tag.is_conv())) return nullptr;
+  }
+
+  assert(CheckFastPathSetting(*conv));
+  (void)(&CheckFastPathSetting);
+
+  conv->conv = tag.as_conv();
+  if (!is_positional) conv->arg_position = ++*next_arg;
+  return pos;
+}
+
+}  // namespace
+
+std::string LengthModToString(LengthMod v) {
+  switch (v) {
+    case LengthMod::h:
+      return "h";
+    case LengthMod::hh:
+      return "hh";
+    case LengthMod::l:
+      return "l";
+    case LengthMod::ll:
+      return "ll";
+    case LengthMod::L:
+      return "L";
+    case LengthMod::j:
+      return "j";
+    case LengthMod::z:
+      return "z";
+    case LengthMod::t:
+      return "t";
+    case LengthMod::q:
+      return "q";
+    case LengthMod::none:
+      return "";
+  }
+  return "";
+}
+
+const char *ConsumeUnboundConversion(const char *p, const char *end,
+                                     UnboundConversion *conv, int *next_arg) {
+  if (*next_arg < 0) return ConsumeConversion<true>(p, end, conv, next_arg);
+  return ConsumeConversion<false>(p, end, conv, next_arg);
+}
+
+struct ParsedFormatBase::ParsedFormatConsumer {
+  explicit ParsedFormatConsumer(ParsedFormatBase *parsedformat)
+      : parsed(parsedformat), data_pos(parsedformat->data_.get()) {}
+
+  bool Append(string_view s) {
+    if (s.empty()) return true;
+
+    size_t text_end = AppendText(s);
+
+    if (!parsed->items_.empty() && !parsed->items_.back().is_conversion) {
+      // Let's extend the existing text run.
+      parsed->items_.back().text_end = text_end;
+    } else {
+      // Let's make a new text run.
+      parsed->items_.push_back({false, text_end, {}});
+    }
+    return true;
+  }
+
+  bool ConvertOne(const UnboundConversion &conv, string_view s) {
+    size_t text_end = AppendText(s);
+    parsed->items_.push_back({true, text_end, conv});
+    return true;
+  }
+
+  size_t AppendText(string_view s) {
+    memcpy(data_pos, s.data(), s.size());
+    data_pos += s.size();
+    return static_cast<size_t>(data_pos - parsed->data_.get());
+  }
+
+  ParsedFormatBase *parsed;
+  char* data_pos;
+};
+
+ParsedFormatBase::ParsedFormatBase(string_view format, bool allow_ignored,
+                                   std::initializer_list<Conv> convs)
+    : data_(format.empty() ? nullptr : new char[format.size()]) {
+  has_error_ = !ParseFormatString(format, ParsedFormatConsumer(this)) ||
+               !MatchesConversions(allow_ignored, convs);
+}
+
+bool ParsedFormatBase::MatchesConversions(
+    bool allow_ignored, std::initializer_list<Conv> convs) const {
+  std::unordered_set<int> used;
+  auto add_if_valid_conv = [&](int pos, char c) {
+      if (static_cast<size_t>(pos) > convs.size() ||
+          !Contains(convs.begin()[pos - 1], c))
+        return false;
+      used.insert(pos);
+      return true;
+  };
+  for (const ConversionItem &item : items_) {
+    if (!item.is_conversion) continue;
+    auto &conv = item.conv;
+    if (conv.precision.is_from_arg() &&
+        !add_if_valid_conv(conv.precision.get_from_arg(), '*'))
+      return false;
+    if (conv.width.is_from_arg() &&
+        !add_if_valid_conv(conv.width.get_from_arg(), '*'))
+      return false;
+    if (!add_if_valid_conv(conv.arg_position,
+                           FormatConversionCharToChar(conv.conv)))
+      return false;
+  }
+  return used.size() == convs.size() || allow_ignored;
+}
+
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.h
new file mode 100644
index 0000000..45c90d1
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_format/parser.h	
@@ -0,0 +1,333 @@
+#ifndef ABSL_STRINGS_INTERNAL_STR_FORMAT_PARSER_H_
+#define ABSL_STRINGS_INTERNAL_STR_FORMAT_PARSER_H_
+
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include <cassert>
+#include <cstdint>
+#include <initializer_list>
+#include <iosfwd>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/strings/internal/str_format/checker.h"
+#include "absl/strings/internal/str_format/extension.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace str_format_internal {
+
+enum class LengthMod : std::uint8_t { h, hh, l, ll, L, j, z, t, q, none };
+
+std::string LengthModToString(LengthMod v);
+
+// The analyzed properties of a single specified conversion.
+struct UnboundConversion {
+  UnboundConversion()
+      : flags() /* This is required to zero all the fields of flags. */ {
+    flags.basic = true;
+  }
+
+  class InputValue {
+   public:
+    void set_value(int value) {
+      assert(value >= 0);
+      value_ = value;
+    }
+    int value() const { return value_; }
+
+    // Marks the value as "from arg". aka the '*' format.
+    // Requires `value >= 1`.
+    // When set, is_from_arg() return true and get_from_arg() returns the
+    // original value.
+    // `value()`'s return value is unspecfied in this state.
+    void set_from_arg(int value) {
+      assert(value > 0);
+      value_ = -value - 1;
+    }
+    bool is_from_arg() const { return value_ < -1; }
+    int get_from_arg() const {
+      assert(is_from_arg());
+      return -value_ - 1;
+    }
+
+   private:
+    int value_ = -1;
+  };
+
+  // No need to initialize. It will always be set in the parser.
+  int arg_position;
+
+  InputValue width;
+  InputValue precision;
+
+  Flags flags;
+  LengthMod length_mod = LengthMod::none;
+  ConversionChar conv = FormatConversionChar::kNone;
+};
+
+// Consume conversion spec prefix (not including '%') of [p, end) if valid.
+// Examples of valid specs would be e.g.: "s", "d", "-12.6f".
+// If valid, it returns the first character following the conversion spec,
+// and the spec part is broken down and returned in 'conv'.
+// If invalid, returns nullptr.
+const char* ConsumeUnboundConversion(const char* p, const char* end,
+                                     UnboundConversion* conv, int* next_arg);
+
+// Helper tag class for the table below.
+// It allows fast `char -> ConversionChar/LengthMod` checking and
+// conversions.
+class ConvTag {
+ public:
+  constexpr ConvTag(ConversionChar conversion_char)  // NOLINT
+      : tag_(static_cast<int8_t>(conversion_char)) {}
+  // We invert the length modifiers to make them negative so that we can easily
+  // test for them.
+  constexpr ConvTag(LengthMod length_mod)  // NOLINT
+      : tag_(~static_cast<std::int8_t>(length_mod)) {}
+  // Everything else is -128, which is negative to make is_conv() simpler.
+  constexpr ConvTag() : tag_(-128) {}
+
+  bool is_conv() const { return tag_ >= 0; }
+  bool is_length() const { return tag_ < 0 && tag_ != -128; }
+  ConversionChar as_conv() const {
+    assert(is_conv());
+    return static_cast<ConversionChar>(tag_);
+  }
+  LengthMod as_length() const {
+    assert(is_length());
+    return static_cast<LengthMod>(~tag_);
+  }
+
+ private:
+  std::int8_t tag_;
+};
+
+extern const ConvTag kTags[256];
+// Keep a single table for all the conversion chars and length modifiers.
+inline ConvTag GetTagForChar(char c) {
+  return kTags[static_cast<unsigned char>(c)];
+}
+
+// Parse the format string provided in 'src' and pass the identified items into
+// 'consumer'.
+// Text runs will be passed by calling
+//   Consumer::Append(string_view);
+// ConversionItems will be passed by calling
+//   Consumer::ConvertOne(UnboundConversion, string_view);
+// In the case of ConvertOne, the string_view that is passed is the
+// portion of the format string corresponding to the conversion, not including
+// the leading %. On success, it returns true. On failure, it stops and returns
+// false.
+template <typename Consumer>
+bool ParseFormatString(string_view src, Consumer consumer) {
+  int next_arg = 0;
+  const char* p = src.data();
+  const char* const end = p + src.size();
+  while (p != end) {
+    const char* percent = static_cast<const char*>(memchr(p, '%', end - p));
+    if (!percent) {
+      // We found the last substring.
+      return consumer.Append(string_view(p, end - p));
+    }
+    // We found a percent, so push the text run then process the percent.
+    if (ABSL_PREDICT_FALSE(!consumer.Append(string_view(p, percent - p)))) {
+      return false;
+    }
+    if (ABSL_PREDICT_FALSE(percent + 1 >= end)) return false;
+
+    auto tag = GetTagForChar(percent[1]);
+    if (tag.is_conv()) {
+      if (ABSL_PREDICT_FALSE(next_arg < 0)) {
+        // This indicates an error in the format std::string.
+        // The only way to get `next_arg < 0` here is to have a positional
+        // argument first which sets next_arg to -1 and then a non-positional
+        // argument.
+        return false;
+      }
+      p = percent + 2;
+
+      // Keep this case separate from the one below.
+      // ConvertOne is more efficient when the compiler can see that the `basic`
+      // flag is set.
+      UnboundConversion conv;
+      conv.conv = tag.as_conv();
+      conv.arg_position = ++next_arg;
+      if (ABSL_PREDICT_FALSE(
+              !consumer.ConvertOne(conv, string_view(percent + 1, 1)))) {
+        return false;
+      }
+    } else if (percent[1] != '%') {
+      UnboundConversion conv;
+      p = ConsumeUnboundConversion(percent + 1, end, &conv, &next_arg);
+      if (ABSL_PREDICT_FALSE(p == nullptr)) return false;
+      if (ABSL_PREDICT_FALSE(!consumer.ConvertOne(
+          conv, string_view(percent + 1, p - (percent + 1))))) {
+        return false;
+      }
+    } else {
+      if (ABSL_PREDICT_FALSE(!consumer.Append("%"))) return false;
+      p = percent + 2;
+      continue;
+    }
+  }
+  return true;
+}
+
+// Always returns true, or fails to compile in a constexpr context if s does not
+// point to a constexpr char array.
+constexpr bool EnsureConstexpr(string_view s) {
+  return s.empty() || s[0] == s[0];
+}
+
+class ParsedFormatBase {
+ public:
+  explicit ParsedFormatBase(string_view format, bool allow_ignored,
+                            std::initializer_list<Conv> convs);
+
+  ParsedFormatBase(const ParsedFormatBase& other) { *this = other; }
+
+  ParsedFormatBase(ParsedFormatBase&& other) { *this = std::move(other); }
+
+  ParsedFormatBase& operator=(const ParsedFormatBase& other) {
+    if (this == &other) return *this;
+    has_error_ = other.has_error_;
+    items_ = other.items_;
+    size_t text_size = items_.empty() ? 0 : items_.back().text_end;
+    data_.reset(new char[text_size]);
+    memcpy(data_.get(), other.data_.get(), text_size);
+    return *this;
+  }
+
+  ParsedFormatBase& operator=(ParsedFormatBase&& other) {
+    if (this == &other) return *this;
+    has_error_ = other.has_error_;
+    data_ = std::move(other.data_);
+    items_ = std::move(other.items_);
+    // Reset the vector to make sure the invariants hold.
+    other.items_.clear();
+    return *this;
+  }
+
+  template <typename Consumer>
+  bool ProcessFormat(Consumer consumer) const {
+    const char* const base = data_.get();
+    string_view text(base, 0);
+    for (const auto& item : items_) {
+      const char* const end = text.data() + text.size();
+      text = string_view(end, (base + item.text_end) - end);
+      if (item.is_conversion) {
+        if (!consumer.ConvertOne(item.conv, text)) return false;
+      } else {
+        if (!consumer.Append(text)) return false;
+      }
+    }
+    return !has_error_;
+  }
+
+  bool has_error() const { return has_error_; }
+
+ private:
+  // Returns whether the conversions match and if !allow_ignored it verifies
+  // that all conversions are used by the format.
+  bool MatchesConversions(bool allow_ignored,
+                          std::initializer_list<Conv> convs) const;
+
+  struct ParsedFormatConsumer;
+
+  struct ConversionItem {
+    bool is_conversion;
+    // Points to the past-the-end location of this element in the data_ array.
+    size_t text_end;
+    UnboundConversion conv;
+  };
+
+  bool has_error_;
+  std::unique_ptr<char[]> data_;
+  std::vector<ConversionItem> items_;
+};
+
+
+// A value type representing a preparsed format.  These can be created, copied
+// around, and reused to speed up formatting loops.
+// The user must specify through the template arguments the conversion
+// characters used in the format. This will be checked at compile time.
+//
+// This class uses Conv enum values to specify each argument.
+// This allows for more flexibility as you can specify multiple possible
+// conversion characters for each argument.
+// ParsedFormat<char...> is a simplified alias for when the user only
+// needs to specify a single conversion character for each argument.
+//
+// Example:
+//   // Extended format supports multiple characters per argument:
+//   using MyFormat = ExtendedParsedFormat<Conv::d | Conv::x>;
+//   MyFormat GetFormat(bool use_hex) {
+//     if (use_hex) return MyFormat("foo %x bar");
+//     return MyFormat("foo %d bar");
+//   }
+//   // 'format' can be used with any value that supports 'd' and 'x',
+//   // like `int`.
+//   auto format = GetFormat(use_hex);
+//   value = StringF(format, i);
+//
+// This class also supports runtime format checking with the ::New() and
+// ::NewAllowIgnored() factory functions.
+// This is the only API that allows the user to pass a runtime specified format
+// string. These factory functions will return NULL if the format does not match
+// the conversions requested by the user.
+template <str_format_internal::Conv... C>
+class ExtendedParsedFormat : public str_format_internal::ParsedFormatBase {
+ public:
+  explicit ExtendedParsedFormat(string_view format)
+#ifdef ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+      __attribute__((
+          enable_if(str_format_internal::EnsureConstexpr(format),
+                    "Format std::string is not constexpr."),
+          enable_if(str_format_internal::ValidFormatImpl<C...>(format),
+                    "Format specified does not match the template arguments.")))
+#endif  // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER
+      : ExtendedParsedFormat(format, false) {
+  }
+
+  // ExtendedParsedFormat factory function.
+  // The user still has to specify the conversion characters, but they will not
+  // be checked at compile time. Instead, it will be checked at runtime.
+  // This delays the checking to runtime, but allows the user to pass
+  // dynamically sourced formats.
+  // It returns NULL if the format does not match the conversion characters.
+  // The user is responsible for checking the return value before using it.
+  //
+  // The 'New' variant will check that all the specified arguments are being
+  // consumed by the format and return NULL if any argument is being ignored.
+  // The 'NewAllowIgnored' variant will not verify this and will allow formats
+  // that ignore arguments.
+  static std::unique_ptr<ExtendedParsedFormat> New(string_view format) {
+    return New(format, false);
+  }
+  static std::unique_ptr<ExtendedParsedFormat> NewAllowIgnored(
+      string_view format) {
+    return New(format, true);
+  }
+
+ private:
+  static std::unique_ptr<ExtendedParsedFormat> New(string_view format,
+                                                   bool allow_ignored) {
+    std::unique_ptr<ExtendedParsedFormat> conv(
+        new ExtendedParsedFormat(format, allow_ignored));
+    if (conv->has_error()) return nullptr;
+    return conv;
+  }
+
+  ExtendedParsedFormat(string_view s, bool allow_ignored)
+      : ParsedFormatBase(s, allow_ignored, {C...}) {}
+};
+}  // namespace str_format_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_FORMAT_PARSER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_join_internal.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_join_internal.h
new file mode 100644
index 0000000..31dbf67
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_join_internal.h	
@@ -0,0 +1,314 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This file declares INTERNAL parts of the Join API that are inlined/templated
+// or otherwise need to be available at compile time. The main abstractions
+// defined in this file are:
+//
+//   - A handful of default Formatters
+//   - JoinAlgorithm() overloads
+//   - JoinRange() overloads
+//   - JoinTuple()
+//
+// DO NOT INCLUDE THIS FILE DIRECTLY. Use this file by including
+// absl/strings/str_join.h
+//
+// IWYU pragma: private, include "absl/strings/str_join.h"
+
+#ifndef ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_
+#define ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_
+
+#include <cstring>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "absl/strings/internal/ostringstream.h"
+#include "absl/strings/internal/resize_uninitialized.h"
+#include "absl/strings/str_cat.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+//
+// Formatter objects
+//
+// The following are implementation classes for standard Formatter objects. The
+// factory functions that users will call to create and use these formatters are
+// defined and documented in strings/join.h.
+//
+
+// The default formatter. Converts alpha-numeric types to strings.
+struct AlphaNumFormatterImpl {
+  // This template is needed in order to support passing in a dereferenced
+  // vector<bool>::iterator
+  template <typename T>
+  void operator()(std::string* out, const T& t) const {
+    StrAppend(out, AlphaNum(t));
+  }
+
+  void operator()(std::string* out, const AlphaNum& t) const {
+    StrAppend(out, t);
+  }
+};
+
+// A type that's used to overload the JoinAlgorithm() function (defined below)
+// for ranges that do not require additional formatting (e.g., a range of
+// strings).
+
+struct NoFormatter : public AlphaNumFormatterImpl {};
+
+// Formats types to strings using the << operator.
+class StreamFormatterImpl {
+ public:
+  // The method isn't const because it mutates state. Making it const will
+  // render StreamFormatterImpl thread-hostile.
+  template <typename T>
+  void operator()(std::string* out, const T& t) {
+    // The stream is created lazily to avoid paying the relatively high cost
+    // of its construction when joining an empty range.
+    if (strm_) {
+      strm_->clear();  // clear the bad, fail and eof bits in case they were set
+      strm_->str(out);
+    } else {
+      strm_.reset(new strings_internal::OStringStream(out));
+    }
+    *strm_ << t;
+  }
+
+ private:
+  std::unique_ptr<strings_internal::OStringStream> strm_;
+};
+
+// Formats a std::pair<>. The 'first' member is formatted using f1_ and the
+// 'second' member is formatted using f2_. sep_ is the separator.
+template <typename F1, typename F2>
+class PairFormatterImpl {
+ public:
+  PairFormatterImpl(F1 f1, absl::string_view sep, F2 f2)
+      : f1_(std::move(f1)), sep_(sep), f2_(std::move(f2)) {}
+
+  template <typename T>
+  void operator()(std::string* out, const T& p) {
+    f1_(out, p.first);
+    out->append(sep_);
+    f2_(out, p.second);
+  }
+
+  template <typename T>
+  void operator()(std::string* out, const T& p) const {
+    f1_(out, p.first);
+    out->append(sep_);
+    f2_(out, p.second);
+  }
+
+ private:
+  F1 f1_;
+  std::string sep_;
+  F2 f2_;
+};
+
+// Wraps another formatter and dereferences the argument to operator() then
+// passes the dereferenced argument to the wrapped formatter. This can be
+// useful, for example, to join a std::vector<int*>.
+template <typename Formatter>
+class DereferenceFormatterImpl {
+ public:
+  DereferenceFormatterImpl() : f_() {}
+  explicit DereferenceFormatterImpl(Formatter&& f)
+      : f_(std::forward<Formatter>(f)) {}
+
+  template <typename T>
+  void operator()(std::string* out, const T& t) {
+    f_(out, *t);
+  }
+
+  template <typename T>
+  void operator()(std::string* out, const T& t) const {
+    f_(out, *t);
+  }
+
+ private:
+  Formatter f_;
+};
+
+// DefaultFormatter<T> is a traits class that selects a default Formatter to use
+// for the given type T. The ::Type member names the Formatter to use. This is
+// used by the strings::Join() functions that do NOT take a Formatter argument,
+// in which case a default Formatter must be chosen.
+//
+// AlphaNumFormatterImpl is the default in the base template, followed by
+// specializations for other types.
+template <typename ValueType>
+struct DefaultFormatter {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<const char*> {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<char*> {
+  typedef AlphaNumFormatterImpl Type;
+};
+template <>
+struct DefaultFormatter<std::string> {
+  typedef NoFormatter Type;
+};
+template <>
+struct DefaultFormatter<absl::string_view> {
+  typedef NoFormatter Type;
+};
+template <typename ValueType>
+struct DefaultFormatter<ValueType*> {
+  typedef DereferenceFormatterImpl<typename DefaultFormatter<ValueType>::Type>
+      Type;
+};
+
+template <typename ValueType>
+struct DefaultFormatter<std::unique_ptr<ValueType>>
+    : public DefaultFormatter<ValueType*> {};
+
+//
+// JoinAlgorithm() functions
+//
+
+// The main joining algorithm. This simply joins the elements in the given
+// iterator range, each separated by the given separator, into an output string,
+// and formats each element using the provided Formatter object.
+template <typename Iterator, typename Formatter>
+std::string JoinAlgorithm(Iterator start, Iterator end, absl::string_view s,
+                          Formatter&& f) {
+  std::string result;
+  absl::string_view sep("");
+  for (Iterator it = start; it != end; ++it) {
+    result.append(sep.data(), sep.size());
+    f(&result, *it);
+    sep = s;
+  }
+  return result;
+}
+
+// A joining algorithm that's optimized for a forward iterator range of
+// string-like objects that do not need any additional formatting. This is to
+// optimize the common case of joining, say, a std::vector<string> or a
+// std::vector<absl::string_view>.
+//
+// This is an overload of the previous JoinAlgorithm() function. Here the
+// Formatter argument is of type NoFormatter. Since NoFormatter is an internal
+// type, this overload is only invoked when strings::Join() is called with a
+// range of string-like objects (e.g., std::string, absl::string_view), and an
+// explicit Formatter argument was NOT specified.
+//
+// The optimization is that the needed space will be reserved in the output
+// string to avoid the need to resize while appending. To do this, the iterator
+// range will be traversed twice: once to calculate the total needed size, and
+// then again to copy the elements and delimiters to the output string.
+template <typename Iterator,
+          typename = typename std::enable_if<std::is_convertible<
+              typename std::iterator_traits<Iterator>::iterator_category,
+              std::forward_iterator_tag>::value>::type>
+std::string JoinAlgorithm(Iterator start, Iterator end, absl::string_view s,
+                          NoFormatter) {
+  std::string result;
+  if (start != end) {
+    // Sums size
+    size_t result_size = start->size();
+    for (Iterator it = start; ++it != end;) {
+      result_size += s.size();
+      result_size += it->size();
+    }
+
+    if (result_size > 0) {
+      STLStringResizeUninitialized(&result, result_size);
+
+      // Joins strings
+      char* result_buf = &*result.begin();
+      memcpy(result_buf, start->data(), start->size());
+      result_buf += start->size();
+      for (Iterator it = start; ++it != end;) {
+        memcpy(result_buf, s.data(), s.size());
+        result_buf += s.size();
+        memcpy(result_buf, it->data(), it->size());
+        result_buf += it->size();
+      }
+    }
+  }
+
+  return result;
+}
+
+// JoinTupleLoop implements a loop over the elements of a std::tuple, which
+// are heterogeneous. The primary template matches the tuple interior case. It
+// continues the iteration after appending a separator (for nonzero indices)
+// and formatting an element of the tuple. The specialization for the I=N case
+// matches the end-of-tuple, and terminates the iteration.
+template <size_t I, size_t N>
+struct JoinTupleLoop {
+  template <typename Tup, typename Formatter>
+  void operator()(std::string* out, const Tup& tup, absl::string_view sep,
+                  Formatter&& fmt) {
+    if (I > 0) out->append(sep.data(), sep.size());
+    fmt(out, std::get<I>(tup));
+    JoinTupleLoop<I + 1, N>()(out, tup, sep, fmt);
+  }
+};
+template <size_t N>
+struct JoinTupleLoop<N, N> {
+  template <typename Tup, typename Formatter>
+  void operator()(std::string*, const Tup&, absl::string_view, Formatter&&) {}
+};
+
+template <typename... T, typename Formatter>
+std::string JoinAlgorithm(const std::tuple<T...>& tup, absl::string_view sep,
+                          Formatter&& fmt) {
+  std::string result;
+  JoinTupleLoop<0, sizeof...(T)>()(&result, tup, sep, fmt);
+  return result;
+}
+
+template <typename Iterator>
+std::string JoinRange(Iterator first, Iterator last,
+                      absl::string_view separator) {
+  // No formatter was explicitly given, so a default must be chosen.
+  typedef typename std::iterator_traits<Iterator>::value_type ValueType;
+  typedef typename DefaultFormatter<ValueType>::Type Formatter;
+  return JoinAlgorithm(first, last, separator, Formatter());
+}
+
+template <typename Range, typename Formatter>
+std::string JoinRange(const Range& range, absl::string_view separator,
+                      Formatter&& fmt) {
+  using std::begin;
+  using std::end;
+  return JoinAlgorithm(begin(range), end(range), separator, fmt);
+}
+
+template <typename Range>
+std::string JoinRange(const Range& range, absl::string_view separator) {
+  using std::begin;
+  using std::end;
+  return JoinRange(begin(range), end(range), separator);
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_JOIN_INTERNAL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/str_split_internal.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_split_internal.h
new file mode 100644
index 0000000..b54f6eb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/str_split_internal.h	
@@ -0,0 +1,455 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This file declares INTERNAL parts of the Split API that are inline/templated
+// or otherwise need to be available at compile time. The main abstractions
+// defined in here are
+//
+//   - ConvertibleToStringView
+//   - SplitIterator<>
+//   - Splitter<>
+//
+// DO NOT INCLUDE THIS FILE DIRECTLY. Use this file by including
+// absl/strings/str_split.h.
+//
+// IWYU pragma: private, include "absl/strings/str_split.h"
+
+#ifndef ABSL_STRINGS_INTERNAL_STR_SPLIT_INTERNAL_H_
+#define ABSL_STRINGS_INTERNAL_STR_SPLIT_INTERNAL_H_
+
+#include <array>
+#include <initializer_list>
+#include <iterator>
+#include <map>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"
+#include "absl/strings/string_view.h"
+
+#ifdef _GLIBCXX_DEBUG
+#include "absl/strings/internal/stl_type_traits.h"
+#endif  // _GLIBCXX_DEBUG
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// This class is implicitly constructible from everything that absl::string_view
+// is implicitly constructible from. If it's constructed from a temporary
+// string, the data is moved into a data member so its lifetime matches that of
+// the ConvertibleToStringView instance.
+class ConvertibleToStringView {
+ public:
+  ConvertibleToStringView(const char* s)  // NOLINT(runtime/explicit)
+      : value_(s) {}
+  ConvertibleToStringView(char* s) : value_(s) {}  // NOLINT(runtime/explicit)
+  ConvertibleToStringView(absl::string_view s)     // NOLINT(runtime/explicit)
+      : value_(s) {}
+  ConvertibleToStringView(const std::string& s)  // NOLINT(runtime/explicit)
+      : value_(s) {}
+
+  // Matches rvalue strings and moves their data to a member.
+ConvertibleToStringView(std::string&& s)  // NOLINT(runtime/explicit)
+    : copy_(std::move(s)), value_(copy_) {}
+
+  ConvertibleToStringView(const ConvertibleToStringView& other)
+      : copy_(other.copy_),
+        value_(other.IsSelfReferential() ? copy_ : other.value_) {}
+
+  ConvertibleToStringView(ConvertibleToStringView&& other) {
+    StealMembers(std::move(other));
+  }
+
+  ConvertibleToStringView& operator=(ConvertibleToStringView other) {
+    StealMembers(std::move(other));
+    return *this;
+  }
+
+  absl::string_view value() const { return value_; }
+
+ private:
+  // Returns true if ctsp's value refers to its internal copy_ member.
+  bool IsSelfReferential() const { return value_.data() == copy_.data(); }
+
+  void StealMembers(ConvertibleToStringView&& other) {
+    if (other.IsSelfReferential()) {
+      copy_ = std::move(other.copy_);
+      value_ = copy_;
+      other.value_ = other.copy_;
+    } else {
+      value_ = other.value_;
+    }
+  }
+
+  // Holds the data moved from temporary std::string arguments. Declared first
+  // so that 'value' can refer to 'copy_'.
+  std::string copy_;
+  absl::string_view value_;
+};
+
+// An iterator that enumerates the parts of a string from a Splitter. The text
+// to be split, the Delimiter, and the Predicate are all taken from the given
+// Splitter object. Iterators may only be compared if they refer to the same
+// Splitter instance.
+//
+// This class is NOT part of the public splitting API.
+template <typename Splitter>
+class SplitIterator {
+ public:
+  using iterator_category = std::input_iterator_tag;
+  using value_type = absl::string_view;
+  using difference_type = ptrdiff_t;
+  using pointer = const value_type*;
+  using reference = const value_type&;
+
+  enum State { kInitState, kLastState, kEndState };
+  SplitIterator(State state, const Splitter* splitter)
+      : pos_(0),
+        state_(state),
+        splitter_(splitter),
+        delimiter_(splitter->delimiter()),
+        predicate_(splitter->predicate()) {
+    // Hack to maintain backward compatibility. This one block makes it so an
+    // empty absl::string_view whose .data() happens to be nullptr behaves
+    // *differently* from an otherwise empty absl::string_view whose .data() is
+    // not nullptr. This is an undesirable difference in general, but this
+    // behavior is maintained to avoid breaking existing code that happens to
+    // depend on this old behavior/bug. Perhaps it will be fixed one day. The
+    // difference in behavior is as follows:
+    //   Split(absl::string_view(""), '-');  // {""}
+    //   Split(absl::string_view(), '-');    // {}
+    if (splitter_->text().data() == nullptr) {
+      state_ = kEndState;
+      pos_ = splitter_->text().size();
+      return;
+    }
+
+    if (state_ == kEndState) {
+      pos_ = splitter_->text().size();
+    } else {
+      ++(*this);
+    }
+  }
+
+  bool at_end() const { return state_ == kEndState; }
+
+  reference operator*() const { return curr_; }
+  pointer operator->() const { return &curr_; }
+
+  SplitIterator& operator++() {
+    do {
+      if (state_ == kLastState) {
+        state_ = kEndState;
+        return *this;
+      }
+      const absl::string_view text = splitter_->text();
+      const absl::string_view d = delimiter_.Find(text, pos_);
+      if (d.data() == text.data() + text.size()) state_ = kLastState;
+      curr_ = text.substr(pos_, d.data() - (text.data() + pos_));
+      pos_ += curr_.size() + d.size();
+    } while (!predicate_(curr_));
+    return *this;
+  }
+
+  SplitIterator operator++(int) {
+    SplitIterator old(*this);
+    ++(*this);
+    return old;
+  }
+
+  friend bool operator==(const SplitIterator& a, const SplitIterator& b) {
+    return a.state_ == b.state_ && a.pos_ == b.pos_;
+  }
+
+  friend bool operator!=(const SplitIterator& a, const SplitIterator& b) {
+    return !(a == b);
+  }
+
+ private:
+  size_t pos_;
+  State state_;
+  absl::string_view curr_;
+  const Splitter* splitter_;
+  typename Splitter::DelimiterType delimiter_;
+  typename Splitter::PredicateType predicate_;
+};
+
+// HasMappedType<T>::value is true iff there exists a type T::mapped_type.
+template <typename T, typename = void>
+struct HasMappedType : std::false_type {};
+template <typename T>
+struct HasMappedType<T, absl::void_t<typename T::mapped_type>>
+    : std::true_type {};
+
+// HasValueType<T>::value is true iff there exists a type T::value_type.
+template <typename T, typename = void>
+struct HasValueType : std::false_type {};
+template <typename T>
+struct HasValueType<T, absl::void_t<typename T::value_type>> : std::true_type {
+};
+
+// HasConstIterator<T>::value is true iff there exists a type T::const_iterator.
+template <typename T, typename = void>
+struct HasConstIterator : std::false_type {};
+template <typename T>
+struct HasConstIterator<T, absl::void_t<typename T::const_iterator>>
+    : std::true_type {};
+
+// IsInitializerList<T>::value is true iff T is an std::initializer_list. More
+// details below in Splitter<> where this is used.
+std::false_type IsInitializerListDispatch(...);  // default: No
+template <typename T>
+std::true_type IsInitializerListDispatch(std::initializer_list<T>*);
+template <typename T>
+struct IsInitializerList
+    : decltype(IsInitializerListDispatch(static_cast<T*>(nullptr))) {};
+
+// A SplitterIsConvertibleTo<C>::type alias exists iff the specified condition
+// is true for type 'C'.
+//
+// Restricts conversion to container-like types (by testing for the presence of
+// a const_iterator member type) and also to disable conversion to an
+// std::initializer_list (which also has a const_iterator). Otherwise, code
+// compiled in C++11 will get an error due to ambiguous conversion paths (in
+// C++11 std::vector<T>::operator= is overloaded to take either a std::vector<T>
+// or an std::initializer_list<T>).
+
+template <typename C, bool has_value_type, bool has_mapped_type>
+struct SplitterIsConvertibleToImpl : std::false_type {};
+
+template <typename C>
+struct SplitterIsConvertibleToImpl<C, true, false>
+    : std::is_constructible<typename C::value_type, absl::string_view> {};
+
+template <typename C>
+struct SplitterIsConvertibleToImpl<C, true, true>
+    : absl::conjunction<
+          std::is_constructible<typename C::key_type, absl::string_view>,
+          std::is_constructible<typename C::mapped_type, absl::string_view>> {};
+
+template <typename C>
+struct SplitterIsConvertibleTo
+    : SplitterIsConvertibleToImpl<
+          C,
+#ifdef _GLIBCXX_DEBUG
+          !IsStrictlyBaseOfAndConvertibleToSTLContainer<C>::value &&
+#endif  // _GLIBCXX_DEBUG
+              !IsInitializerList<
+                  typename std::remove_reference<C>::type>::value &&
+              HasValueType<C>::value && HasConstIterator<C>::value,
+          HasMappedType<C>::value> {
+};
+
+// This class implements the range that is returned by absl::StrSplit(). This
+// class has templated conversion operators that allow it to be implicitly
+// converted to a variety of types that the caller may have specified on the
+// left-hand side of an assignment.
+//
+// The main interface for interacting with this class is through its implicit
+// conversion operators. However, this class may also be used like a container
+// in that it has .begin() and .end() member functions. It may also be used
+// within a range-for loop.
+//
+// Output containers can be collections of any type that is constructible from
+// an absl::string_view.
+//
+// An Predicate functor may be supplied. This predicate will be used to filter
+// the split strings: only strings for which the predicate returns true will be
+// kept. A Predicate object is any unary functor that takes an absl::string_view
+// and returns bool.
+template <typename Delimiter, typename Predicate>
+class Splitter {
+ public:
+  using DelimiterType = Delimiter;
+  using PredicateType = Predicate;
+  using const_iterator = strings_internal::SplitIterator<Splitter>;
+  using value_type = typename std::iterator_traits<const_iterator>::value_type;
+
+  Splitter(ConvertibleToStringView input_text, Delimiter d, Predicate p)
+      : text_(std::move(input_text)),
+        delimiter_(std::move(d)),
+        predicate_(std::move(p)) {}
+
+  absl::string_view text() const { return text_.value(); }
+  const Delimiter& delimiter() const { return delimiter_; }
+  const Predicate& predicate() const { return predicate_; }
+
+  // Range functions that iterate the split substrings as absl::string_view
+  // objects. These methods enable a Splitter to be used in a range-based for
+  // loop.
+  const_iterator begin() const { return {const_iterator::kInitState, this}; }
+  const_iterator end() const { return {const_iterator::kEndState, this}; }
+
+  // An implicit conversion operator that is restricted to only those containers
+  // that the splitter is convertible to.
+  template <typename Container,
+            typename = typename std::enable_if<
+                SplitterIsConvertibleTo<Container>::value>::type>
+  operator Container() const {  // NOLINT(runtime/explicit)
+    return ConvertToContainer<Container, typename Container::value_type,
+                              HasMappedType<Container>::value>()(*this);
+  }
+
+  // Returns a pair with its .first and .second members set to the first two
+  // strings returned by the begin() iterator. Either/both of .first and .second
+  // will be constructed with empty strings if the iterator doesn't have a
+  // corresponding value.
+  template <typename First, typename Second>
+  operator std::pair<First, Second>() const {  // NOLINT(runtime/explicit)
+    absl::string_view first, second;
+    auto it = begin();
+    if (it != end()) {
+      first = *it;
+      if (++it != end()) {
+        second = *it;
+      }
+    }
+    return {First(first), Second(second)};
+  }
+
+ private:
+  // ConvertToContainer is a functor converting a Splitter to the requested
+  // Container of ValueType. It is specialized below to optimize splitting to
+  // certain combinations of Container and ValueType.
+  //
+  // This base template handles the generic case of storing the split results in
+  // the requested non-map-like container and converting the split substrings to
+  // the requested type.
+  template <typename Container, typename ValueType, bool is_map = false>
+  struct ConvertToContainer {
+    Container operator()(const Splitter& splitter) const {
+      Container c;
+      auto it = std::inserter(c, c.end());
+      for (const auto sp : splitter) {
+        *it++ = ValueType(sp);
+      }
+      return c;
+    }
+  };
+
+  // Partial specialization for a std::vector<absl::string_view>.
+  //
+  // Optimized for the common case of splitting to a
+  // std::vector<absl::string_view>. In this case we first split the results to
+  // a small array of absl::string_view on the stack, to reduce reallocations.
+  template <typename A>
+  struct ConvertToContainer<std::vector<absl::string_view, A>,
+                            absl::string_view, false> {
+    std::vector<absl::string_view, A> operator()(
+        const Splitter& splitter) const {
+      struct raw_view {
+        const char* data;
+        size_t size;
+        operator absl::string_view() const {  // NOLINT(runtime/explicit)
+          return {data, size};
+        }
+      };
+      std::vector<absl::string_view, A> v;
+      std::array<raw_view, 16> ar;
+      for (auto it = splitter.begin(); !it.at_end();) {
+        size_t index = 0;
+        do {
+          ar[index].data = it->data();
+          ar[index].size = it->size();
+          ++it;
+        } while (++index != ar.size() && !it.at_end());
+        v.insert(v.end(), ar.begin(), ar.begin() + index);
+      }
+      return v;
+    }
+  };
+
+  // Partial specialization for a std::vector<std::string>.
+  //
+  // Optimized for the common case of splitting to a std::vector<std::string>.
+  // In this case we first split the results to a std::vector<absl::string_view>
+  // so the returned std::vector<std::string> can have space reserved to avoid
+  // std::string moves.
+  template <typename A>
+  struct ConvertToContainer<std::vector<std::string, A>, std::string, false> {
+    std::vector<std::string, A> operator()(const Splitter& splitter) const {
+      const std::vector<absl::string_view> v = splitter;
+      return std::vector<std::string, A>(v.begin(), v.end());
+    }
+  };
+
+  // Partial specialization for containers of pairs (e.g., maps).
+  //
+  // The algorithm is to insert a new pair into the map for each even-numbered
+  // item, with the even-numbered item as the key with a default-constructed
+  // value. Each odd-numbered item will then be assigned to the last pair's
+  // value.
+  template <typename Container, typename First, typename Second>
+  struct ConvertToContainer<Container, std::pair<const First, Second>, true> {
+    Container operator()(const Splitter& splitter) const {
+      Container m;
+      typename Container::iterator it;
+      bool insert = true;
+      for (const auto sp : splitter) {
+        if (insert) {
+          it = Inserter<Container>::Insert(&m, First(sp), Second());
+        } else {
+          it->second = Second(sp);
+        }
+        insert = !insert;
+      }
+      return m;
+    }
+
+    // Inserts the key and value into the given map, returning an iterator to
+    // the inserted item. Specialized for std::map and std::multimap to use
+    // emplace() and adapt emplace()'s return value.
+    template <typename Map>
+    struct Inserter {
+      using M = Map;
+      template <typename... Args>
+      static typename M::iterator Insert(M* m, Args&&... args) {
+        return m->insert(std::make_pair(std::forward<Args>(args)...)).first;
+      }
+    };
+
+    template <typename... Ts>
+    struct Inserter<std::map<Ts...>> {
+      using M = std::map<Ts...>;
+      template <typename... Args>
+      static typename M::iterator Insert(M* m, Args&&... args) {
+        return m->emplace(std::make_pair(std::forward<Args>(args)...)).first;
+      }
+    };
+
+    template <typename... Ts>
+    struct Inserter<std::multimap<Ts...>> {
+      using M = std::multimap<Ts...>;
+      template <typename... Args>
+      static typename M::iterator Insert(M* m, Args&&... args) {
+        return m->emplace(std::make_pair(std::forward<Args>(args)...));
+      }
+    };
+  };
+
+  ConvertibleToStringView text_;
+  Delimiter delimiter_;
+  Predicate predicate_;
+};
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_STR_SPLIT_INTERNAL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.cc b/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.cc
new file mode 100644
index 0000000..8fd8edc
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.cc	
@@ -0,0 +1,53 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// UTF8 utilities, implemented to reduce dependencies.
+
+#include "absl/strings/internal/utf8.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+size_t EncodeUTF8Char(char *buffer, char32_t utf8_char) {
+  if (utf8_char <= 0x7F) {
+    *buffer = static_cast<char>(utf8_char);
+    return 1;
+  } else if (utf8_char <= 0x7FF) {
+    buffer[1] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[0] = 0xC0 | utf8_char;
+    return 2;
+  } else if (utf8_char <= 0xFFFF) {
+    buffer[2] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[1] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[0] = 0xE0 | utf8_char;
+    return 3;
+  } else {
+    buffer[3] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[2] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[1] = 0x80 | (utf8_char & 0x3F);
+    utf8_char >>= 6;
+    buffer[0] = 0xF0 | utf8_char;
+    return 4;
+  }
+}
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.h b/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.h
new file mode 100644
index 0000000..32fb109
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/internal/utf8.h	
@@ -0,0 +1,50 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// UTF8 utilities, implemented to reduce dependencies.
+
+#ifndef ABSL_STRINGS_INTERNAL_UTF8_H_
+#define ABSL_STRINGS_INTERNAL_UTF8_H_
+
+#include <cstddef>
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+// For Unicode code points 0 through 0x10FFFF, EncodeUTF8Char writes
+// out the UTF-8 encoding into buffer, and returns the number of chars
+// it wrote.
+//
+// As described in https://tools.ietf.org/html/rfc3629#section-3 , the encodings
+// are:
+//    00 -     7F : 0xxxxxxx
+//    80 -    7FF : 110xxxxx 10xxxxxx
+//   800 -   FFFF : 1110xxxx 10xxxxxx 10xxxxxx
+// 10000 - 10FFFF : 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+//
+// Values greater than 0x10FFFF are not supported and may or may not write
+// characters into buffer, however never will more than kMaxEncodedUTF8Size
+// bytes be written, regardless of the value of utf8_char.
+enum { kMaxEncodedUTF8Size = 4 };
+size_t EncodeUTF8Char(char *buffer, char32_t utf8_char);
+
+}  // namespace strings_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_UTF8_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/match.cc b/ChattingApp 000/Pods/abseil/absl/strings/match.cc
new file mode 100644
index 0000000..8127cb0
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/match.cc	
@@ -0,0 +1,40 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/match.h"
+
+#include "absl/strings/internal/memutil.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+bool EqualsIgnoreCase(absl::string_view piece1, absl::string_view piece2) {
+  return (piece1.size() == piece2.size() &&
+          0 == absl::strings_internal::memcasecmp(piece1.data(), piece2.data(),
+                                                  piece1.size()));
+  // memcasecmp uses absl::ascii_tolower().
+}
+
+bool StartsWithIgnoreCase(absl::string_view text, absl::string_view prefix) {
+  return (text.size() >= prefix.size()) &&
+         EqualsIgnoreCase(text.substr(0, prefix.size()), prefix);
+}
+
+bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix) {
+  return (text.size() >= suffix.size()) &&
+         EqualsIgnoreCase(text.substr(text.size() - suffix.size()), suffix);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/match.h b/ChattingApp 000/Pods/abseil/absl/strings/match.h
new file mode 100644
index 0000000..90fca98
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/match.h	
@@ -0,0 +1,90 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: match.h
+// -----------------------------------------------------------------------------
+//
+// This file contains simple utilities for performing string matching checks.
+// All of these function parameters are specified as `absl::string_view`,
+// meaning that these functions can accept `std::string`, `absl::string_view` or
+// NUL-terminated C-style strings.
+//
+// Examples:
+//   std::string s = "foo";
+//   absl::string_view sv = "f";
+//   assert(absl::StrContains(s, sv));
+//
+// Note: The order of parameters in these functions is designed to mimic the
+// order an equivalent member function would exhibit;
+// e.g. `s.Contains(x)` ==> `absl::StrContains(s, x).
+#ifndef ABSL_STRINGS_MATCH_H_
+#define ABSL_STRINGS_MATCH_H_
+
+#include <cstring>
+
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// StrContains()
+//
+// Returns whether a given string `haystack` contains the substring `needle`.
+inline bool StrContains(absl::string_view haystack, absl::string_view needle) {
+  return haystack.find(needle, 0) != haystack.npos;
+}
+
+// StartsWith()
+//
+// Returns whether a given string `text` begins with `prefix`.
+inline bool StartsWith(absl::string_view text, absl::string_view prefix) {
+  return prefix.empty() ||
+         (text.size() >= prefix.size() &&
+          memcmp(text.data(), prefix.data(), prefix.size()) == 0);
+}
+
+// EndsWith()
+//
+// Returns whether a given string `text` ends with `suffix`.
+inline bool EndsWith(absl::string_view text, absl::string_view suffix) {
+  return suffix.empty() ||
+         (text.size() >= suffix.size() &&
+          memcmp(text.data() + (text.size() - suffix.size()), suffix.data(),
+                 suffix.size()) == 0);
+}
+
+// EqualsIgnoreCase()
+//
+// Returns whether given ASCII strings `piece1` and `piece2` are equal, ignoring
+// case in the comparison.
+bool EqualsIgnoreCase(absl::string_view piece1, absl::string_view piece2);
+
+// StartsWithIgnoreCase()
+//
+// Returns whether a given ASCII string `text` starts with `prefix`,
+// ignoring case in the comparison.
+bool StartsWithIgnoreCase(absl::string_view text, absl::string_view prefix);
+
+// EndsWithIgnoreCase()
+//
+// Returns whether a given ASCII string `text` ends with `suffix`, ignoring
+// case in the comparison.
+bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_MATCH_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/numbers.cc b/ChattingApp 000/Pods/abseil/absl/strings/numbers.cc
new file mode 100644
index 0000000..68c26dd
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/numbers.cc	
@@ -0,0 +1,965 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file contains string processing functions related to
+// numeric values.
+
+#include "absl/strings/numbers.h"
+
+#include <algorithm>
+#include <cassert>
+#include <cfloat>  // for DBL_DIG and FLT_DIG
+#include <cmath>   // for HUGE_VAL
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <utility>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/bits.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/charconv.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/internal/memutil.h"
+#include "absl/strings/match.h"
+#include "absl/strings/str_cat.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+bool SimpleAtof(absl::string_view str, float* out) {
+  *out = 0.0;
+  str = StripAsciiWhitespace(str);
+  if (!str.empty() && str[0] == '+') {
+    str.remove_prefix(1);
+  }
+  auto result = absl::from_chars(str.data(), str.data() + str.size(), *out);
+  if (result.ec == std::errc::invalid_argument) {
+    return false;
+  }
+  if (result.ptr != str.data() + str.size()) {
+    // not all non-whitespace characters consumed
+    return false;
+  }
+  // from_chars() with DR 3081's current wording will return max() on
+  // overflow.  SimpleAtof returns infinity instead.
+  if (result.ec == std::errc::result_out_of_range) {
+    if (*out > 1.0) {
+      *out = std::numeric_limits<float>::infinity();
+    } else if (*out < -1.0) {
+      *out = -std::numeric_limits<float>::infinity();
+    }
+  }
+  return true;
+}
+
+bool SimpleAtod(absl::string_view str, double* out) {
+  *out = 0.0;
+  str = StripAsciiWhitespace(str);
+  if (!str.empty() && str[0] == '+') {
+    str.remove_prefix(1);
+  }
+  auto result = absl::from_chars(str.data(), str.data() + str.size(), *out);
+  if (result.ec == std::errc::invalid_argument) {
+    return false;
+  }
+  if (result.ptr != str.data() + str.size()) {
+    // not all non-whitespace characters consumed
+    return false;
+  }
+  // from_chars() with DR 3081's current wording will return max() on
+  // overflow.  SimpleAtod returns infinity instead.
+  if (result.ec == std::errc::result_out_of_range) {
+    if (*out > 1.0) {
+      *out = std::numeric_limits<double>::infinity();
+    } else if (*out < -1.0) {
+      *out = -std::numeric_limits<double>::infinity();
+    }
+  }
+  return true;
+}
+
+bool SimpleAtob(absl::string_view str, bool* out) {
+  ABSL_RAW_CHECK(out != nullptr, "Output pointer must not be nullptr.");
+  if (EqualsIgnoreCase(str, "true") || EqualsIgnoreCase(str, "t") ||
+      EqualsIgnoreCase(str, "yes") || EqualsIgnoreCase(str, "y") ||
+      EqualsIgnoreCase(str, "1")) {
+    *out = true;
+    return true;
+  }
+  if (EqualsIgnoreCase(str, "false") || EqualsIgnoreCase(str, "f") ||
+      EqualsIgnoreCase(str, "no") || EqualsIgnoreCase(str, "n") ||
+      EqualsIgnoreCase(str, "0")) {
+    *out = false;
+    return true;
+  }
+  return false;
+}
+
+// ----------------------------------------------------------------------
+// FastIntToBuffer() overloads
+//
+// Like the Fast*ToBuffer() functions above, these are intended for speed.
+// Unlike the Fast*ToBuffer() functions, however, these functions write
+// their output to the beginning of the buffer.  The caller is responsible
+// for ensuring that the buffer has enough space to hold the output.
+//
+// Returns a pointer to the end of the string (i.e. the null character
+// terminating the string).
+// ----------------------------------------------------------------------
+
+namespace {
+
+// Used to optimize printing a decimal number's final digit.
+const char one_ASCII_final_digits[10][2] {
+  {'0', 0}, {'1', 0}, {'2', 0}, {'3', 0}, {'4', 0},
+  {'5', 0}, {'6', 0}, {'7', 0}, {'8', 0}, {'9', 0},
+};
+
+}  // namespace
+
+char* numbers_internal::FastIntToBuffer(uint32_t i, char* buffer) {
+  uint32_t digits;
+  // The idea of this implementation is to trim the number of divides to as few
+  // as possible, and also reducing memory stores and branches, by going in
+  // steps of two digits at a time rather than one whenever possible.
+  // The huge-number case is first, in the hopes that the compiler will output
+  // that case in one branch-free block of code, and only output conditional
+  // branches into it from below.
+  if (i >= 1000000000) {     // >= 1,000,000,000
+    digits = i / 100000000;  //      100,000,000
+    i -= digits * 100000000;
+    PutTwoDigits(digits, buffer);
+    buffer += 2;
+  lt100_000_000:
+    digits = i / 1000000;  // 1,000,000
+    i -= digits * 1000000;
+    PutTwoDigits(digits, buffer);
+    buffer += 2;
+  lt1_000_000:
+    digits = i / 10000;  // 10,000
+    i -= digits * 10000;
+    PutTwoDigits(digits, buffer);
+    buffer += 2;
+  lt10_000:
+    digits = i / 100;
+    i -= digits * 100;
+    PutTwoDigits(digits, buffer);
+    buffer += 2;
+ lt100:
+    digits = i;
+    PutTwoDigits(digits, buffer);
+    buffer += 2;
+    *buffer = 0;
+    return buffer;
+  }
+
+  if (i < 100) {
+    digits = i;
+    if (i >= 10) goto lt100;
+    memcpy(buffer, one_ASCII_final_digits[i], 2);
+    return buffer + 1;
+  }
+  if (i < 10000) {  //    10,000
+    if (i >= 1000) goto lt10_000;
+    digits = i / 100;
+    i -= digits * 100;
+    *buffer++ = '0' + digits;
+    goto lt100;
+  }
+  if (i < 1000000) {  //    1,000,000
+    if (i >= 100000) goto lt1_000_000;
+    digits = i / 10000;  //    10,000
+    i -= digits * 10000;
+    *buffer++ = '0' + digits;
+    goto lt10_000;
+  }
+  if (i < 100000000) {  //    100,000,000
+    if (i >= 10000000) goto lt100_000_000;
+    digits = i / 1000000;  //   1,000,000
+    i -= digits * 1000000;
+    *buffer++ = '0' + digits;
+    goto lt1_000_000;
+  }
+  // we already know that i < 1,000,000,000
+  digits = i / 100000000;  //   100,000,000
+  i -= digits * 100000000;
+  *buffer++ = '0' + digits;
+  goto lt100_000_000;
+}
+
+char* numbers_internal::FastIntToBuffer(int32_t i, char* buffer) {
+  uint32_t u = i;
+  if (i < 0) {
+    *buffer++ = '-';
+    // We need to do the negation in modular (i.e., "unsigned")
+    // arithmetic; MSVC++ apprently warns for plain "-u", so
+    // we write the equivalent expression "0 - u" instead.
+    u = 0 - u;
+  }
+  return numbers_internal::FastIntToBuffer(u, buffer);
+}
+
+char* numbers_internal::FastIntToBuffer(uint64_t i, char* buffer) {
+  uint32_t u32 = static_cast<uint32_t>(i);
+  if (u32 == i) return numbers_internal::FastIntToBuffer(u32, buffer);
+
+  // Here we know i has at least 10 decimal digits.
+  uint64_t top_1to11 = i / 1000000000;
+  u32 = static_cast<uint32_t>(i - top_1to11 * 1000000000);
+  uint32_t top_1to11_32 = static_cast<uint32_t>(top_1to11);
+
+  if (top_1to11_32 == top_1to11) {
+    buffer = numbers_internal::FastIntToBuffer(top_1to11_32, buffer);
+  } else {
+    // top_1to11 has more than 32 bits too; print it in two steps.
+    uint32_t top_8to9 = static_cast<uint32_t>(top_1to11 / 100);
+    uint32_t mid_2 = static_cast<uint32_t>(top_1to11 - top_8to9 * 100);
+    buffer = numbers_internal::FastIntToBuffer(top_8to9, buffer);
+    PutTwoDigits(mid_2, buffer);
+    buffer += 2;
+  }
+
+  // We have only 9 digits now, again the maximum uint32_t can handle fully.
+  uint32_t digits = u32 / 10000000;  // 10,000,000
+  u32 -= digits * 10000000;
+  PutTwoDigits(digits, buffer);
+  buffer += 2;
+  digits = u32 / 100000;  // 100,000
+  u32 -= digits * 100000;
+  PutTwoDigits(digits, buffer);
+  buffer += 2;
+  digits = u32 / 1000;  // 1,000
+  u32 -= digits * 1000;
+  PutTwoDigits(digits, buffer);
+  buffer += 2;
+  digits = u32 / 10;
+  u32 -= digits * 10;
+  PutTwoDigits(digits, buffer);
+  buffer += 2;
+  memcpy(buffer, one_ASCII_final_digits[u32], 2);
+  return buffer + 1;
+}
+
+char* numbers_internal::FastIntToBuffer(int64_t i, char* buffer) {
+  uint64_t u = i;
+  if (i < 0) {
+    *buffer++ = '-';
+    u = 0 - u;
+  }
+  return numbers_internal::FastIntToBuffer(u, buffer);
+}
+
+// Given a 128-bit number expressed as a pair of uint64_t, high half first,
+// return that number multiplied by the given 32-bit value.  If the result is
+// too large to fit in a 128-bit number, divide it by 2 until it fits.
+static std::pair<uint64_t, uint64_t> Mul32(std::pair<uint64_t, uint64_t> num,
+                                           uint32_t mul) {
+  uint64_t bits0_31 = num.second & 0xFFFFFFFF;
+  uint64_t bits32_63 = num.second >> 32;
+  uint64_t bits64_95 = num.first & 0xFFFFFFFF;
+  uint64_t bits96_127 = num.first >> 32;
+
+  // The picture so far: each of these 64-bit values has only the lower 32 bits
+  // filled in.
+  // bits96_127:          [ 00000000 xxxxxxxx ]
+  // bits64_95:                    [ 00000000 xxxxxxxx ]
+  // bits32_63:                             [ 00000000 xxxxxxxx ]
+  // bits0_31:                                       [ 00000000 xxxxxxxx ]
+
+  bits0_31 *= mul;
+  bits32_63 *= mul;
+  bits64_95 *= mul;
+  bits96_127 *= mul;
+
+  // Now the top halves may also have value, though all 64 of their bits will
+  // never be set at the same time, since they are a result of a 32x32 bit
+  // multiply.  This makes the carry calculation slightly easier.
+  // bits96_127:          [ mmmmmmmm | mmmmmmmm ]
+  // bits64_95:                    [ | mmmmmmmm mmmmmmmm | ]
+  // bits32_63:                      |        [ mmmmmmmm | mmmmmmmm ]
+  // bits0_31:                       |                 [ | mmmmmmmm mmmmmmmm ]
+  // eventually:        [ bits128_up | ...bits64_127.... | ..bits0_63... ]
+
+  uint64_t bits0_63 = bits0_31 + (bits32_63 << 32);
+  uint64_t bits64_127 = bits64_95 + (bits96_127 << 32) + (bits32_63 >> 32) +
+                        (bits0_63 < bits0_31);
+  uint64_t bits128_up = (bits96_127 >> 32) + (bits64_127 < bits64_95);
+  if (bits128_up == 0) return {bits64_127, bits0_63};
+
+  int shift = 64 - base_internal::CountLeadingZeros64(bits128_up);
+  uint64_t lo = (bits0_63 >> shift) + (bits64_127 << (64 - shift));
+  uint64_t hi = (bits64_127 >> shift) + (bits128_up << (64 - shift));
+  return {hi, lo};
+}
+
+// Compute num * 5 ^ expfive, and return the first 128 bits of the result,
+// where the first bit is always a one.  So PowFive(1, 0) starts 0b100000,
+// PowFive(1, 1) starts 0b101000, PowFive(1, 2) starts 0b110010, etc.
+static std::pair<uint64_t, uint64_t> PowFive(uint64_t num, int expfive) {
+  std::pair<uint64_t, uint64_t> result = {num, 0};
+  while (expfive >= 13) {
+    // 5^13 is the highest power of five that will fit in a 32-bit integer.
+    result = Mul32(result, 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5);
+    expfive -= 13;
+  }
+  constexpr int powers_of_five[13] = {
+      1,
+      5,
+      5 * 5,
+      5 * 5 * 5,
+      5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5,
+      5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5 * 5};
+  result = Mul32(result, powers_of_five[expfive & 15]);
+  int shift = base_internal::CountLeadingZeros64(result.first);
+  if (shift != 0) {
+    result.first = (result.first << shift) + (result.second >> (64 - shift));
+    result.second = (result.second << shift);
+  }
+  return result;
+}
+
+struct ExpDigits {
+  int32_t exponent;
+  char digits[6];
+};
+
+// SplitToSix converts value, a positive double-precision floating-point number,
+// into a base-10 exponent and 6 ASCII digits, where the first digit is never
+// zero.  For example, SplitToSix(1) returns an exponent of zero and a digits
+// array of {'1', '0', '0', '0', '0', '0'}.  If value is exactly halfway between
+// two possible representations, e.g. value = 100000.5, then "round to even" is
+// performed.
+static ExpDigits SplitToSix(const double value) {
+  ExpDigits exp_dig;
+  int exp = 5;
+  double d = value;
+  // First step: calculate a close approximation of the output, where the
+  // value d will be between 100,000 and 999,999, representing the digits
+  // in the output ASCII array, and exp is the base-10 exponent.  It would be
+  // faster to use a table here, and to look up the base-2 exponent of value,
+  // however value is an IEEE-754 64-bit number, so the table would have 2,000
+  // entries, which is not cache-friendly.
+  if (d >= 999999.5) {
+    if (d >= 1e+261) exp += 256, d *= 1e-256;
+    if (d >= 1e+133) exp += 128, d *= 1e-128;
+    if (d >= 1e+69) exp += 64, d *= 1e-64;
+    if (d >= 1e+37) exp += 32, d *= 1e-32;
+    if (d >= 1e+21) exp += 16, d *= 1e-16;
+    if (d >= 1e+13) exp += 8, d *= 1e-8;
+    if (d >= 1e+9) exp += 4, d *= 1e-4;
+    if (d >= 1e+7) exp += 2, d *= 1e-2;
+    if (d >= 1e+6) exp += 1, d *= 1e-1;
+  } else {
+    if (d < 1e-250) exp -= 256, d *= 1e256;
+    if (d < 1e-122) exp -= 128, d *= 1e128;
+    if (d < 1e-58) exp -= 64, d *= 1e64;
+    if (d < 1e-26) exp -= 32, d *= 1e32;
+    if (d < 1e-10) exp -= 16, d *= 1e16;
+    if (d < 1e-2) exp -= 8, d *= 1e8;
+    if (d < 1e+2) exp -= 4, d *= 1e4;
+    if (d < 1e+4) exp -= 2, d *= 1e2;
+    if (d < 1e+5) exp -= 1, d *= 1e1;
+  }
+  // At this point, d is in the range [99999.5..999999.5) and exp is in the
+  // range [-324..308]. Since we need to round d up, we want to add a half
+  // and truncate.
+  // However, the technique above may have lost some precision, due to its
+  // repeated multiplication by constants that each may be off by half a bit
+  // of precision.  This only matters if we're close to the edge though.
+  // Since we'd like to know if the fractional part of d is close to a half,
+  // we multiply it by 65536 and see if the fractional part is close to 32768.
+  // (The number doesn't have to be a power of two,but powers of two are faster)
+  uint64_t d64k = d * 65536;
+  int dddddd;  // A 6-digit decimal integer.
+  if ((d64k % 65536) == 32767 || (d64k % 65536) == 32768) {
+    // OK, it's fairly likely that precision was lost above, which is
+    // not a surprise given only 52 mantissa bits are available.  Therefore
+    // redo the calculation using 128-bit numbers.  (64 bits are not enough).
+
+    // Start out with digits rounded down; maybe add one below.
+    dddddd = static_cast<int>(d64k / 65536);
+
+    // mantissa is a 64-bit integer representing M.mmm... * 2^63.  The actual
+    // value we're representing, of course, is M.mmm... * 2^exp2.
+    int exp2;
+    double m = std::frexp(value, &exp2);
+    uint64_t mantissa = m * (32768.0 * 65536.0 * 65536.0 * 65536.0);
+    // std::frexp returns an m value in the range [0.5, 1.0), however we
+    // can't multiply it by 2^64 and convert to an integer because some FPUs
+    // throw an exception when converting an number higher than 2^63 into an
+    // integer - even an unsigned 64-bit integer!  Fortunately it doesn't matter
+    // since m only has 52 significant bits anyway.
+    mantissa <<= 1;
+    exp2 -= 64;  // not needed, but nice for debugging
+
+    // OK, we are here to compare:
+    //     (dddddd + 0.5) * 10^(exp-5)  vs.  mantissa * 2^exp2
+    // so we can round up dddddd if appropriate.  Those values span the full
+    // range of 600 orders of magnitude of IEE 64-bit floating-point.
+    // Fortunately, we already know they are very close, so we don't need to
+    // track the base-2 exponent of both sides.  This greatly simplifies the
+    // the math since the 2^exp2 calculation is unnecessary and the power-of-10
+    // calculation can become a power-of-5 instead.
+
+    std::pair<uint64_t, uint64_t> edge, val;
+    if (exp >= 6) {
+      // Compare (dddddd + 0.5) * 5 ^ (exp - 5) to mantissa
+      // Since we're tossing powers of two, 2 * dddddd + 1 is the
+      // same as dddddd + 0.5
+      edge = PowFive(2 * dddddd + 1, exp - 5);
+
+      val.first = mantissa;
+      val.second = 0;
+    } else {
+      // We can't compare (dddddd + 0.5) * 5 ^ (exp - 5) to mantissa as we did
+      // above because (exp - 5) is negative.  So we compare (dddddd + 0.5) to
+      // mantissa * 5 ^ (5 - exp)
+      edge = PowFive(2 * dddddd + 1, 0);
+
+      val = PowFive(mantissa, 5 - exp);
+    }
+    // printf("exp=%d %016lx %016lx vs %016lx %016lx\n", exp, val.first,
+    //        val.second, edge.first, edge.second);
+    if (val > edge) {
+      dddddd++;
+    } else if (val == edge) {
+      dddddd += (dddddd & 1);
+    }
+  } else {
+    // Here, we are not close to the edge.
+    dddddd = static_cast<int>((d64k + 32768) / 65536);
+  }
+  if (dddddd == 1000000) {
+    dddddd = 100000;
+    exp += 1;
+  }
+  exp_dig.exponent = exp;
+
+  int two_digits = dddddd / 10000;
+  dddddd -= two_digits * 10000;
+  numbers_internal::PutTwoDigits(two_digits, &exp_dig.digits[0]);
+
+  two_digits = dddddd / 100;
+  dddddd -= two_digits * 100;
+  numbers_internal::PutTwoDigits(two_digits, &exp_dig.digits[2]);
+
+  numbers_internal::PutTwoDigits(dddddd, &exp_dig.digits[4]);
+  return exp_dig;
+}
+
+// Helper function for fast formatting of floating-point.
+// The result is the same as "%g", a.k.a. "%.6g".
+size_t numbers_internal::SixDigitsToBuffer(double d, char* const buffer) {
+  static_assert(std::numeric_limits<float>::is_iec559,
+                "IEEE-754/IEC-559 support only");
+
+  char* out = buffer;  // we write data to out, incrementing as we go, but
+                       // FloatToBuffer always returns the address of the buffer
+                       // passed in.
+
+  if (std::isnan(d)) {
+    strcpy(out, "nan");  // NOLINT(runtime/printf)
+    return 3;
+  }
+  if (d == 0) {  // +0 and -0 are handled here
+    if (std::signbit(d)) *out++ = '-';
+    *out++ = '0';
+    *out = 0;
+    return out - buffer;
+  }
+  if (d < 0) {
+    *out++ = '-';
+    d = -d;
+  }
+  if (std::isinf(d)) {
+    strcpy(out, "inf");  // NOLINT(runtime/printf)
+    return out + 3 - buffer;
+  }
+
+  auto exp_dig = SplitToSix(d);
+  int exp = exp_dig.exponent;
+  const char* digits = exp_dig.digits;
+  out[0] = '0';
+  out[1] = '.';
+  switch (exp) {
+    case 5:
+      memcpy(out, &digits[0], 6), out += 6;
+      *out = 0;
+      return out - buffer;
+    case 4:
+      memcpy(out, &digits[0], 5), out += 5;
+      if (digits[5] != '0') {
+        *out++ = '.';
+        *out++ = digits[5];
+      }
+      *out = 0;
+      return out - buffer;
+    case 3:
+      memcpy(out, &digits[0], 4), out += 4;
+      if ((digits[5] | digits[4]) != '0') {
+        *out++ = '.';
+        *out++ = digits[4];
+        if (digits[5] != '0') *out++ = digits[5];
+      }
+      *out = 0;
+      return out - buffer;
+    case 2:
+      memcpy(out, &digits[0], 3), out += 3;
+      *out++ = '.';
+      memcpy(out, &digits[3], 3);
+      out += 3;
+      while (out[-1] == '0') --out;
+      if (out[-1] == '.') --out;
+      *out = 0;
+      return out - buffer;
+    case 1:
+      memcpy(out, &digits[0], 2), out += 2;
+      *out++ = '.';
+      memcpy(out, &digits[2], 4);
+      out += 4;
+      while (out[-1] == '0') --out;
+      if (out[-1] == '.') --out;
+      *out = 0;
+      return out - buffer;
+    case 0:
+      memcpy(out, &digits[0], 1), out += 1;
+      *out++ = '.';
+      memcpy(out, &digits[1], 5);
+      out += 5;
+      while (out[-1] == '0') --out;
+      if (out[-1] == '.') --out;
+      *out = 0;
+      return out - buffer;
+    case -4:
+      out[2] = '0';
+      ++out;
+      ABSL_FALLTHROUGH_INTENDED;
+    case -3:
+      out[2] = '0';
+      ++out;
+      ABSL_FALLTHROUGH_INTENDED;
+    case -2:
+      out[2] = '0';
+      ++out;
+      ABSL_FALLTHROUGH_INTENDED;
+    case -1:
+      out += 2;
+      memcpy(out, &digits[0], 6);
+      out += 6;
+      while (out[-1] == '0') --out;
+      *out = 0;
+      return out - buffer;
+  }
+  assert(exp < -4 || exp >= 6);
+  out[0] = digits[0];
+  assert(out[1] == '.');
+  out += 2;
+  memcpy(out, &digits[1], 5), out += 5;
+  while (out[-1] == '0') --out;
+  if (out[-1] == '.') --out;
+  *out++ = 'e';
+  if (exp > 0) {
+    *out++ = '+';
+  } else {
+    *out++ = '-';
+    exp = -exp;
+  }
+  if (exp > 99) {
+    int dig1 = exp / 100;
+    exp -= dig1 * 100;
+    *out++ = '0' + dig1;
+  }
+  PutTwoDigits(exp, out);
+  out += 2;
+  *out = 0;
+  return out - buffer;
+}
+
+namespace {
+// Represents integer values of digits.
+// Uses 36 to indicate an invalid character since we support
+// bases up to 36.
+static const int8_t kAsciiToInt[256] = {
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,  // 16 36s.
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 0,  1,  2,  3,  4,  5,
+    6,  7,  8,  9,  36, 36, 36, 36, 36, 36, 36, 10, 11, 12, 13, 14, 15, 16, 17,
+    18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
+    36, 36, 36, 36, 36, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+    24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
+    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36};
+
+// Parse the sign and optional hex or oct prefix in text.
+inline bool safe_parse_sign_and_base(absl::string_view* text /*inout*/,
+                                     int* base_ptr /*inout*/,
+                                     bool* negative_ptr /*output*/) {
+  if (text->data() == nullptr) {
+    return false;
+  }
+
+  const char* start = text->data();
+  const char* end = start + text->size();
+  int base = *base_ptr;
+
+  // Consume whitespace.
+  while (start < end && absl::ascii_isspace(start[0])) {
+    ++start;
+  }
+  while (start < end && absl::ascii_isspace(end[-1])) {
+    --end;
+  }
+  if (start >= end) {
+    return false;
+  }
+
+  // Consume sign.
+  *negative_ptr = (start[0] == '-');
+  if (*negative_ptr || start[0] == '+') {
+    ++start;
+    if (start >= end) {
+      return false;
+    }
+  }
+
+  // Consume base-dependent prefix.
+  //  base 0: "0x" -> base 16, "0" -> base 8, default -> base 10
+  //  base 16: "0x" -> base 16
+  // Also validate the base.
+  if (base == 0) {
+    if (end - start >= 2 && start[0] == '0' &&
+        (start[1] == 'x' || start[1] == 'X')) {
+      base = 16;
+      start += 2;
+      if (start >= end) {
+        // "0x" with no digits after is invalid.
+        return false;
+      }
+    } else if (end - start >= 1 && start[0] == '0') {
+      base = 8;
+      start += 1;
+    } else {
+      base = 10;
+    }
+  } else if (base == 16) {
+    if (end - start >= 2 && start[0] == '0' &&
+        (start[1] == 'x' || start[1] == 'X')) {
+      start += 2;
+      if (start >= end) {
+        // "0x" with no digits after is invalid.
+        return false;
+      }
+    }
+  } else if (base >= 2 && base <= 36) {
+    // okay
+  } else {
+    return false;
+  }
+  *text = absl::string_view(start, end - start);
+  *base_ptr = base;
+  return true;
+}
+
+// Consume digits.
+//
+// The classic loop:
+//
+//   for each digit
+//     value = value * base + digit
+//   value *= sign
+//
+// The classic loop needs overflow checking.  It also fails on the most
+// negative integer, -2147483648 in 32-bit two's complement representation.
+//
+// My improved loop:
+//
+//  if (!negative)
+//    for each digit
+//      value = value * base
+//      value = value + digit
+//  else
+//    for each digit
+//      value = value * base
+//      value = value - digit
+//
+// Overflow checking becomes simple.
+
+// Lookup tables per IntType:
+// vmax/base and vmin/base are precomputed because division costs at least 8ns.
+// TODO(junyer): Doing this per base instead (i.e. an array of structs, not a
+// struct of arrays) would probably be better in terms of d-cache for the most
+// commonly used bases.
+template <typename IntType>
+struct LookupTables {
+  ABSL_CONST_INIT static const IntType kVmaxOverBase[];
+  ABSL_CONST_INIT static const IntType kVminOverBase[];
+};
+
+// An array initializer macro for X/base where base in [0, 36].
+// However, note that lookups for base in [0, 1] should never happen because
+// base has been validated to be in [2, 36] by safe_parse_sign_and_base().
+#define X_OVER_BASE_INITIALIZER(X)                                        \
+  {                                                                       \
+    0, 0, X / 2, X / 3, X / 4, X / 5, X / 6, X / 7, X / 8, X / 9, X / 10, \
+        X / 11, X / 12, X / 13, X / 14, X / 15, X / 16, X / 17, X / 18,   \
+        X / 19, X / 20, X / 21, X / 22, X / 23, X / 24, X / 25, X / 26,   \
+        X / 27, X / 28, X / 29, X / 30, X / 31, X / 32, X / 33, X / 34,   \
+        X / 35, X / 36,                                                   \
+  }
+
+// uint128& operator/=(uint128) is not constexpr, so hardcode the resulting
+// array to avoid a static initializer.
+template <>
+const uint128 LookupTables<uint128>::kVmaxOverBase[] = {
+    0,
+    0,
+    MakeUint128(9223372036854775807u, 18446744073709551615u),
+    MakeUint128(6148914691236517205u, 6148914691236517205u),
+    MakeUint128(4611686018427387903u, 18446744073709551615u),
+    MakeUint128(3689348814741910323u, 3689348814741910323u),
+    MakeUint128(3074457345618258602u, 12297829382473034410u),
+    MakeUint128(2635249153387078802u, 5270498306774157604u),
+    MakeUint128(2305843009213693951u, 18446744073709551615u),
+    MakeUint128(2049638230412172401u, 14347467612885206812u),
+    MakeUint128(1844674407370955161u, 11068046444225730969u),
+    MakeUint128(1676976733973595601u, 8384883669867978007u),
+    MakeUint128(1537228672809129301u, 6148914691236517205u),
+    MakeUint128(1418980313362273201u, 4256940940086819603u),
+    MakeUint128(1317624576693539401u, 2635249153387078802u),
+    MakeUint128(1229782938247303441u, 1229782938247303441u),
+    MakeUint128(1152921504606846975u, 18446744073709551615u),
+    MakeUint128(1085102592571150095u, 1085102592571150095u),
+    MakeUint128(1024819115206086200u, 16397105843297379214u),
+    MakeUint128(970881267037344821u, 16504981539634861972u),
+    MakeUint128(922337203685477580u, 14757395258967641292u),
+    MakeUint128(878416384462359600u, 14054662151397753612u),
+    MakeUint128(838488366986797800u, 13415813871788764811u),
+    MakeUint128(802032351030850070u, 4812194106185100421u),
+    MakeUint128(768614336404564650u, 12297829382473034410u),
+    MakeUint128(737869762948382064u, 11805916207174113034u),
+    MakeUint128(709490156681136600u, 11351842506898185609u),
+    MakeUint128(683212743470724133u, 17080318586768103348u),
+    MakeUint128(658812288346769700u, 10540996613548315209u),
+    MakeUint128(636094623231363848u, 15266270957552732371u),
+    MakeUint128(614891469123651720u, 9838263505978427528u),
+    MakeUint128(595056260442243600u, 9520900167075897608u),
+    MakeUint128(576460752303423487u, 18446744073709551615u),
+    MakeUint128(558992244657865200u, 8943875914525843207u),
+    MakeUint128(542551296285575047u, 9765923333140350855u),
+    MakeUint128(527049830677415760u, 8432797290838652167u),
+    MakeUint128(512409557603043100u, 8198552921648689607u),
+};
+
+template <typename IntType>
+const IntType LookupTables<IntType>::kVmaxOverBase[] =
+    X_OVER_BASE_INITIALIZER(std::numeric_limits<IntType>::max());
+
+template <typename IntType>
+const IntType LookupTables<IntType>::kVminOverBase[] =
+    X_OVER_BASE_INITIALIZER(std::numeric_limits<IntType>::min());
+
+#undef X_OVER_BASE_INITIALIZER
+
+template <typename IntType>
+inline bool safe_parse_positive_int(absl::string_view text, int base,
+                                    IntType* value_p) {
+  IntType value = 0;
+  const IntType vmax = std::numeric_limits<IntType>::max();
+  assert(vmax > 0);
+  assert(base >= 0);
+  assert(vmax >= static_cast<IntType>(base));
+  const IntType vmax_over_base = LookupTables<IntType>::kVmaxOverBase[base];
+  assert(base < 2 ||
+         std::numeric_limits<IntType>::max() / base == vmax_over_base);
+  const char* start = text.data();
+  const char* end = start + text.size();
+  // loop over digits
+  for (; start < end; ++start) {
+    unsigned char c = static_cast<unsigned char>(start[0]);
+    int digit = kAsciiToInt[c];
+    if (digit >= base) {
+      *value_p = value;
+      return false;
+    }
+    if (value > vmax_over_base) {
+      *value_p = vmax;
+      return false;
+    }
+    value *= base;
+    if (value > vmax - digit) {
+      *value_p = vmax;
+      return false;
+    }
+    value += digit;
+  }
+  *value_p = value;
+  return true;
+}
+
+template <typename IntType>
+inline bool safe_parse_negative_int(absl::string_view text, int base,
+                                    IntType* value_p) {
+  IntType value = 0;
+  const IntType vmin = std::numeric_limits<IntType>::min();
+  assert(vmin < 0);
+  assert(vmin <= 0 - base);
+  IntType vmin_over_base = LookupTables<IntType>::kVminOverBase[base];
+  assert(base < 2 ||
+         std::numeric_limits<IntType>::min() / base == vmin_over_base);
+  // 2003 c++ standard [expr.mul]
+  // "... the sign of the remainder is implementation-defined."
+  // Although (vmin/base)*base + vmin%base is always vmin.
+  // 2011 c++ standard tightens the spec but we cannot rely on it.
+  // TODO(junyer): Handle this in the lookup table generation.
+  if (vmin % base > 0) {
+    vmin_over_base += 1;
+  }
+  const char* start = text.data();
+  const char* end = start + text.size();
+  // loop over digits
+  for (; start < end; ++start) {
+    unsigned char c = static_cast<unsigned char>(start[0]);
+    int digit = kAsciiToInt[c];
+    if (digit >= base) {
+      *value_p = value;
+      return false;
+    }
+    if (value < vmin_over_base) {
+      *value_p = vmin;
+      return false;
+    }
+    value *= base;
+    if (value < vmin + digit) {
+      *value_p = vmin;
+      return false;
+    }
+    value -= digit;
+  }
+  *value_p = value;
+  return true;
+}
+
+// Input format based on POSIX.1-2008 strtol
+// http://pubs.opengroup.org/onlinepubs/9699919799/functions/strtol.html
+template <typename IntType>
+inline bool safe_int_internal(absl::string_view text, IntType* value_p,
+                              int base) {
+  *value_p = 0;
+  bool negative;
+  if (!safe_parse_sign_and_base(&text, &base, &negative)) {
+    return false;
+  }
+  if (!negative) {
+    return safe_parse_positive_int(text, base, value_p);
+  } else {
+    return safe_parse_negative_int(text, base, value_p);
+  }
+}
+
+template <typename IntType>
+inline bool safe_uint_internal(absl::string_view text, IntType* value_p,
+                               int base) {
+  *value_p = 0;
+  bool negative;
+  if (!safe_parse_sign_and_base(&text, &base, &negative) || negative) {
+    return false;
+  }
+  return safe_parse_positive_int(text, base, value_p);
+}
+}  // anonymous namespace
+
+namespace numbers_internal {
+
+// Digit conversion.
+ABSL_CONST_INIT ABSL_DLL const char kHexChar[] =
+    "0123456789abcdef";
+
+ABSL_CONST_INIT ABSL_DLL const char kHexTable[513] =
+    "000102030405060708090a0b0c0d0e0f"
+    "101112131415161718191a1b1c1d1e1f"
+    "202122232425262728292a2b2c2d2e2f"
+    "303132333435363738393a3b3c3d3e3f"
+    "404142434445464748494a4b4c4d4e4f"
+    "505152535455565758595a5b5c5d5e5f"
+    "606162636465666768696a6b6c6d6e6f"
+    "707172737475767778797a7b7c7d7e7f"
+    "808182838485868788898a8b8c8d8e8f"
+    "909192939495969798999a9b9c9d9e9f"
+    "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
+    "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+    "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+    "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+    "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+    "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
+
+ABSL_CONST_INIT ABSL_DLL const char two_ASCII_digits[100][2] = {
+    {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'},
+    {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'},
+    {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'},
+    {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'},
+    {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'},
+    {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'},
+    {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'},
+    {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'},
+    {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'},
+    {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'},
+    {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'},
+    {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'},
+    {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'},
+    {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'},
+    {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'},
+    {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'},
+    {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}};
+
+bool safe_strto32_base(absl::string_view text, int32_t* value, int base) {
+  return safe_int_internal<int32_t>(text, value, base);
+}
+
+bool safe_strto64_base(absl::string_view text, int64_t* value, int base) {
+  return safe_int_internal<int64_t>(text, value, base);
+}
+
+bool safe_strtou32_base(absl::string_view text, uint32_t* value, int base) {
+  return safe_uint_internal<uint32_t>(text, value, base);
+}
+
+bool safe_strtou64_base(absl::string_view text, uint64_t* value, int base) {
+  return safe_uint_internal<uint64_t>(text, value, base);
+}
+
+bool safe_strtou128_base(absl::string_view text, uint128* value, int base) {
+  return safe_uint_internal<absl::uint128>(text, value, base);
+}
+
+}  // namespace numbers_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/numbers.h b/ChattingApp 000/Pods/abseil/absl/strings/numbers.h
new file mode 100644
index 0000000..d872cca
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/numbers.h	
@@ -0,0 +1,266 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: numbers.h
+// -----------------------------------------------------------------------------
+//
+// This package contains functions for converting strings to numbers. For
+// converting numbers to strings, use `StrCat()` or `StrAppend()` in str_cat.h,
+// which automatically detect and convert most number values appropriately.
+
+#ifndef ABSL_STRINGS_NUMBERS_H_
+#define ABSL_STRINGS_NUMBERS_H_
+
+#ifdef __SSE4_2__
+#include <x86intrin.h>
+#endif
+
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <limits>
+#include <string>
+#include <type_traits>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/bits.h"
+#ifdef __SSE4_2__
+// TODO(jorg): Remove this when we figure out the right way
+// to swap bytes on SSE 4.2 that works with the compilers
+// we claim to support.  Also, add tests for the compiler
+// that doesn't support the Intel _bswap64 intrinsic but
+// does support all the SSE 4.2 intrinsics
+#include "absl/base/internal/endian.h"
+#endif
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/numeric/int128.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// SimpleAtoi()
+//
+// Converts the given string (optionally followed or preceded by ASCII
+// whitespace) into an integer value, returning `true` if successful. The string
+// must reflect a base-10 integer whose value falls within the range of the
+// integer type (optionally preceded by a `+` or `-`). If any errors are
+// encountered, this function returns `false`, leaving `out` in an unspecified
+// state.
+template <typename int_type>
+ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str, int_type* out);
+
+// SimpleAtof()
+//
+// Converts the given string (optionally followed or preceded by ASCII
+// whitespace) into a float, which may be rounded on overflow or underflow,
+// returning `true` if successful.
+// See https://en.cppreference.com/w/c/string/byte/strtof for details about the
+// allowed formats for `str`, except SimpleAtof() is locale-independent and will
+// always use the "C" locale. If any errors are encountered, this function
+// returns `false`, leaving `out` in an unspecified state.
+ABSL_MUST_USE_RESULT bool SimpleAtof(absl::string_view str, float* out);
+
+// SimpleAtod()
+//
+// Converts the given string (optionally followed or preceded by ASCII
+// whitespace) into a double, which may be rounded on overflow or underflow,
+// returning `true` if successful.
+// See https://en.cppreference.com/w/c/string/byte/strtof for details about the
+// allowed formats for `str`, except SimpleAtod is locale-independent and will
+// always use the "C" locale. If any errors are encountered, this function
+// returns `false`, leaving `out` in an unspecified state.
+ABSL_MUST_USE_RESULT bool SimpleAtod(absl::string_view str, double* out);
+
+// SimpleAtob()
+//
+// Converts the given string into a boolean, returning `true` if successful.
+// The following case-insensitive strings are interpreted as boolean `true`:
+// "true", "t", "yes", "y", "1". The following case-insensitive strings
+// are interpreted as boolean `false`: "false", "f", "no", "n", "0". If any
+// errors are encountered, this function returns `false`, leaving `out` in an
+// unspecified state.
+ABSL_MUST_USE_RESULT bool SimpleAtob(absl::string_view str, bool* out);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// End of public API.  Implementation details follow.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace numbers_internal {
+
+// Digit conversion.
+ABSL_DLL extern const char kHexChar[17];  // 0123456789abcdef
+ABSL_DLL extern const char
+    kHexTable[513];  // 000102030405060708090a0b0c0d0e0f1011...
+ABSL_DLL extern const char
+    two_ASCII_digits[100][2];  // 00, 01, 02, 03...
+
+// Writes a two-character representation of 'i' to 'buf'. 'i' must be in the
+// range 0 <= i < 100, and buf must have space for two characters. Example:
+//   char buf[2];
+//   PutTwoDigits(42, buf);
+//   // buf[0] == '4'
+//   // buf[1] == '2'
+inline void PutTwoDigits(size_t i, char* buf) {
+  assert(i < 100);
+  memcpy(buf, two_ASCII_digits[i], 2);
+}
+
+// safe_strto?() functions for implementing SimpleAtoi()
+bool safe_strto32_base(absl::string_view text, int32_t* value, int base);
+bool safe_strto64_base(absl::string_view text, int64_t* value, int base);
+bool safe_strtou32_base(absl::string_view text, uint32_t* value, int base);
+bool safe_strtou64_base(absl::string_view text, uint64_t* value, int base);
+bool safe_strtou128_base(absl::string_view text, absl::uint128* value,
+                         int base);
+
+static const int kFastToBufferSize = 32;
+static const int kSixDigitsToBufferSize = 16;
+
+// Helper function for fast formatting of floating-point values.
+// The result is the same as printf's "%g", a.k.a. "%.6g"; that is, six
+// significant digits are returned, trailing zeros are removed, and numbers
+// outside the range 0.0001-999999 are output using scientific notation
+// (1.23456e+06). This routine is heavily optimized.
+// Required buffer size is `kSixDigitsToBufferSize`.
+size_t SixDigitsToBuffer(double d, char* buffer);
+
+// These functions are intended for speed. All functions take an output buffer
+// as an argument and return a pointer to the last byte they wrote, which is the
+// terminating '\0'. At most `kFastToBufferSize` bytes are written.
+char* FastIntToBuffer(int32_t, char*);
+char* FastIntToBuffer(uint32_t, char*);
+char* FastIntToBuffer(int64_t, char*);
+char* FastIntToBuffer(uint64_t, char*);
+
+// For enums and integer types that are not an exact match for the types above,
+// use templates to call the appropriate one of the four overloads above.
+template <typename int_type>
+char* FastIntToBuffer(int_type i, char* buffer) {
+  static_assert(sizeof(i) <= 64 / 8,
+                "FastIntToBuffer works only with 64-bit-or-less integers.");
+  // TODO(jorg): This signed-ness check is used because it works correctly
+  // with enums, and it also serves to check that int_type is not a pointer.
+  // If one day something like std::is_signed<enum E> works, switch to it.
+  if (static_cast<int_type>(1) - 2 < 0) {  // Signed
+    if (sizeof(i) > 32 / 8) {           // 33-bit to 64-bit
+      return FastIntToBuffer(static_cast<int64_t>(i), buffer);
+    } else {  // 32-bit or less
+      return FastIntToBuffer(static_cast<int32_t>(i), buffer);
+    }
+  } else {                     // Unsigned
+    if (sizeof(i) > 32 / 8) {  // 33-bit to 64-bit
+      return FastIntToBuffer(static_cast<uint64_t>(i), buffer);
+    } else {  // 32-bit or less
+      return FastIntToBuffer(static_cast<uint32_t>(i), buffer);
+    }
+  }
+}
+
+// Implementation of SimpleAtoi, generalized to support arbitrary base (used
+// with base different from 10 elsewhere in Abseil implementation).
+template <typename int_type>
+ABSL_MUST_USE_RESULT bool safe_strtoi_base(absl::string_view s, int_type* out,
+                                           int base) {
+  static_assert(sizeof(*out) == 4 || sizeof(*out) == 8,
+                "SimpleAtoi works only with 32-bit or 64-bit integers.");
+  static_assert(!std::is_floating_point<int_type>::value,
+                "Use SimpleAtof or SimpleAtod instead.");
+  bool parsed;
+  // TODO(jorg): This signed-ness check is used because it works correctly
+  // with enums, and it also serves to check that int_type is not a pointer.
+  // If one day something like std::is_signed<enum E> works, switch to it.
+  if (static_cast<int_type>(1) - 2 < 0) {  // Signed
+    if (sizeof(*out) == 64 / 8) {       // 64-bit
+      int64_t val;
+      parsed = numbers_internal::safe_strto64_base(s, &val, base);
+      *out = static_cast<int_type>(val);
+    } else {  // 32-bit
+      int32_t val;
+      parsed = numbers_internal::safe_strto32_base(s, &val, base);
+      *out = static_cast<int_type>(val);
+    }
+  } else {                         // Unsigned
+    if (sizeof(*out) == 64 / 8) {  // 64-bit
+      uint64_t val;
+      parsed = numbers_internal::safe_strtou64_base(s, &val, base);
+      *out = static_cast<int_type>(val);
+    } else {  // 32-bit
+      uint32_t val;
+      parsed = numbers_internal::safe_strtou32_base(s, &val, base);
+      *out = static_cast<int_type>(val);
+    }
+  }
+  return parsed;
+}
+
+// FastHexToBufferZeroPad16()
+//
+// Outputs `val` into `out` as if by `snprintf(out, 17, "%016x", val)` but
+// without the terminating null character. Thus `out` must be of length >= 16.
+// Returns the number of non-pad digits of the output (it can never be zero
+// since 0 has one digit).
+inline size_t FastHexToBufferZeroPad16(uint64_t val, char* out) {
+#ifdef __SSE4_2__
+  uint64_t be = absl::big_endian::FromHost64(val);
+  const auto kNibbleMask = _mm_set1_epi8(0xf);
+  const auto kHexDigits = _mm_setr_epi8('0', '1', '2', '3', '4', '5', '6', '7',
+                                        '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
+  auto v = _mm_loadl_epi64(reinterpret_cast<__m128i*>(&be));  // load lo dword
+  auto v4 = _mm_srli_epi64(v, 4);                            // shift 4 right
+  auto il = _mm_unpacklo_epi8(v4, v);                        // interleave bytes
+  auto m = _mm_and_si128(il, kNibbleMask);                   // mask out nibbles
+  auto hexchars = _mm_shuffle_epi8(kHexDigits, m);           // hex chars
+  _mm_storeu_si128(reinterpret_cast<__m128i*>(out), hexchars);
+#else
+  for (int i = 0; i < 8; ++i) {
+    auto byte = (val >> (56 - 8 * i)) & 0xFF;
+    auto* hex = &absl::numbers_internal::kHexTable[byte * 2];
+    std::memcpy(out + 2 * i, hex, 2);
+  }
+#endif
+  // | 0x1 so that even 0 has 1 digit.
+  return 16 - absl::base_internal::CountLeadingZeros64(val | 0x1) / 4;
+}
+
+}  // namespace numbers_internal
+
+// SimpleAtoi()
+//
+// Converts a string to an integer, using `safe_strto?()` functions for actual
+// parsing, returning `true` if successful. The `safe_strto?()` functions apply
+// strict checking; the string must be a base-10 integer, optionally followed or
+// preceded by ASCII whitespace, with a value in the range of the corresponding
+// integer type.
+template <typename int_type>
+ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str, int_type* out) {
+  return numbers_internal::safe_strtoi_base(str, out, 10);
+}
+
+ABSL_MUST_USE_RESULT inline bool SimpleAtoi(absl::string_view str,
+                                            absl::uint128* out) {
+  return numbers_internal::safe_strtou128_base(str, out, 10);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_NUMBERS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_cat.cc b/ChattingApp 000/Pods/abseil/absl/strings/str_cat.cc
new file mode 100644
index 0000000..d9afe2f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_cat.cc	
@@ -0,0 +1,246 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/str_cat.h"
+
+#include <assert.h>
+
+#include <algorithm>
+#include <cstdint>
+#include <cstring>
+
+#include "absl/strings/ascii.h"
+#include "absl/strings/internal/resize_uninitialized.h"
+#include "absl/strings/numbers.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+AlphaNum::AlphaNum(Hex hex) {
+  static_assert(numbers_internal::kFastToBufferSize >= 32,
+                "This function only works when output buffer >= 32 bytes long");
+  char* const end = &digits_[numbers_internal::kFastToBufferSize];
+  auto real_width =
+      absl::numbers_internal::FastHexToBufferZeroPad16(hex.value, end - 16);
+  if (real_width >= hex.width) {
+    piece_ = absl::string_view(end - real_width, real_width);
+  } else {
+    // Pad first 16 chars because FastHexToBufferZeroPad16 pads only to 16 and
+    // max pad width can be up to 20.
+    std::memset(end - 32, hex.fill, 16);
+    // Patch up everything else up to the real_width.
+    std::memset(end - real_width - 16, hex.fill, 16);
+    piece_ = absl::string_view(end - hex.width, hex.width);
+  }
+}
+
+AlphaNum::AlphaNum(Dec dec) {
+  assert(dec.width <= numbers_internal::kFastToBufferSize);
+  char* const end = &digits_[numbers_internal::kFastToBufferSize];
+  char* const minfill = end - dec.width;
+  char* writer = end;
+  uint64_t value = dec.value;
+  bool neg = dec.neg;
+  while (value > 9) {
+    *--writer = '0' + (value % 10);
+    value /= 10;
+  }
+  *--writer = '0' + value;
+  if (neg) *--writer = '-';
+
+  ptrdiff_t fillers = writer - minfill;
+  if (fillers > 0) {
+    // Tricky: if the fill character is ' ', then it's <fill><+/-><digits>
+    // But...: if the fill character is '0', then it's <+/-><fill><digits>
+    bool add_sign_again = false;
+    if (neg && dec.fill == '0') {  // If filling with '0',
+      ++writer;                    // ignore the sign we just added
+      add_sign_again = true;       // and re-add the sign later.
+    }
+    writer -= fillers;
+    std::fill_n(writer, fillers, dec.fill);
+    if (add_sign_again) *--writer = '-';
+  }
+
+  piece_ = absl::string_view(writer, end - writer);
+}
+
+// ----------------------------------------------------------------------
+// StrCat()
+//    This merges the given strings or integers, with no delimiter. This
+//    is designed to be the fastest possible way to construct a string out
+//    of a mix of raw C strings, string_views, strings, and integer values.
+// ----------------------------------------------------------------------
+
+// Append is merely a version of memcpy that returns the address of the byte
+// after the area just overwritten.
+static char* Append(char* out, const AlphaNum& x) {
+  // memcpy is allowed to overwrite arbitrary memory, so doing this after the
+  // call would force an extra fetch of x.size().
+  char* after = out + x.size();
+  if (x.size() != 0) {
+    memcpy(out, x.data(), x.size());
+  }
+  return after;
+}
+
+std::string StrCat(const AlphaNum& a, const AlphaNum& b) {
+  std::string result;
+  absl::strings_internal::STLStringResizeUninitialized(&result,
+                                                       a.size() + b.size());
+  char* const begin = &result[0];
+  char* out = begin;
+  out = Append(out, a);
+  out = Append(out, b);
+  assert(out == begin + result.size());
+  return result;
+}
+
+std::string StrCat(const AlphaNum& a, const AlphaNum& b, const AlphaNum& c) {
+  std::string result;
+  strings_internal::STLStringResizeUninitialized(
+      &result, a.size() + b.size() + c.size());
+  char* const begin = &result[0];
+  char* out = begin;
+  out = Append(out, a);
+  out = Append(out, b);
+  out = Append(out, c);
+  assert(out == begin + result.size());
+  return result;
+}
+
+std::string StrCat(const AlphaNum& a, const AlphaNum& b, const AlphaNum& c,
+                   const AlphaNum& d) {
+  std::string result;
+  strings_internal::STLStringResizeUninitialized(
+      &result, a.size() + b.size() + c.size() + d.size());
+  char* const begin = &result[0];
+  char* out = begin;
+  out = Append(out, a);
+  out = Append(out, b);
+  out = Append(out, c);
+  out = Append(out, d);
+  assert(out == begin + result.size());
+  return result;
+}
+
+namespace strings_internal {
+
+// Do not call directly - these are not part of the public API.
+std::string CatPieces(std::initializer_list<absl::string_view> pieces) {
+  std::string result;
+  size_t total_size = 0;
+  for (const absl::string_view piece : pieces) total_size += piece.size();
+  strings_internal::STLStringResizeUninitialized(&result, total_size);
+
+  char* const begin = &result[0];
+  char* out = begin;
+  for (const absl::string_view piece : pieces) {
+    const size_t this_size = piece.size();
+    if (this_size != 0) {
+      memcpy(out, piece.data(), this_size);
+      out += this_size;
+    }
+  }
+  assert(out == begin + result.size());
+  return result;
+}
+
+// It's possible to call StrAppend with an absl::string_view that is itself a
+// fragment of the string we're appending to.  However the results of this are
+// random. Therefore, check for this in debug mode.  Use unsigned math so we
+// only have to do one comparison. Note, there's an exception case: appending an
+// empty string is always allowed.
+#define ASSERT_NO_OVERLAP(dest, src) \
+  assert(((src).size() == 0) ||      \
+         (uintptr_t((src).data() - (dest).data()) > uintptr_t((dest).size())))
+
+void AppendPieces(std::string* dest,
+                  std::initializer_list<absl::string_view> pieces) {
+  size_t old_size = dest->size();
+  size_t total_size = old_size;
+  for (const absl::string_view piece : pieces) {
+    ASSERT_NO_OVERLAP(*dest, piece);
+    total_size += piece.size();
+  }
+  strings_internal::STLStringResizeUninitialized(dest, total_size);
+
+  char* const begin = &(*dest)[0];
+  char* out = begin + old_size;
+  for (const absl::string_view piece : pieces) {
+    const size_t this_size = piece.size();
+    if (this_size != 0) {
+      memcpy(out, piece.data(), this_size);
+      out += this_size;
+    }
+  }
+  assert(out == begin + dest->size());
+}
+
+}  // namespace strings_internal
+
+void StrAppend(std::string* dest, const AlphaNum& a) {
+  ASSERT_NO_OVERLAP(*dest, a);
+  dest->append(a.data(), a.size());
+}
+
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b) {
+  ASSERT_NO_OVERLAP(*dest, a);
+  ASSERT_NO_OVERLAP(*dest, b);
+  std::string::size_type old_size = dest->size();
+  strings_internal::STLStringResizeUninitialized(
+      dest, old_size + a.size() + b.size());
+  char* const begin = &(*dest)[0];
+  char* out = begin + old_size;
+  out = Append(out, a);
+  out = Append(out, b);
+  assert(out == begin + dest->size());
+}
+
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b,
+               const AlphaNum& c) {
+  ASSERT_NO_OVERLAP(*dest, a);
+  ASSERT_NO_OVERLAP(*dest, b);
+  ASSERT_NO_OVERLAP(*dest, c);
+  std::string::size_type old_size = dest->size();
+  strings_internal::STLStringResizeUninitialized(
+      dest, old_size + a.size() + b.size() + c.size());
+  char* const begin = &(*dest)[0];
+  char* out = begin + old_size;
+  out = Append(out, a);
+  out = Append(out, b);
+  out = Append(out, c);
+  assert(out == begin + dest->size());
+}
+
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b,
+               const AlphaNum& c, const AlphaNum& d) {
+  ASSERT_NO_OVERLAP(*dest, a);
+  ASSERT_NO_OVERLAP(*dest, b);
+  ASSERT_NO_OVERLAP(*dest, c);
+  ASSERT_NO_OVERLAP(*dest, d);
+  std::string::size_type old_size = dest->size();
+  strings_internal::STLStringResizeUninitialized(
+      dest, old_size + a.size() + b.size() + c.size() + d.size());
+  char* const begin = &(*dest)[0];
+  char* out = begin + old_size;
+  out = Append(out, a);
+  out = Append(out, b);
+  out = Append(out, c);
+  out = Append(out, d);
+  assert(out == begin + dest->size());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_cat.h b/ChattingApp 000/Pods/abseil/absl/strings/str_cat.h
new file mode 100644
index 0000000..292fa23
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_cat.h	
@@ -0,0 +1,408 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: str_cat.h
+// -----------------------------------------------------------------------------
+//
+// This package contains functions for efficiently concatenating and appending
+// strings: `StrCat()` and `StrAppend()`. Most of the work within these routines
+// is actually handled through use of a special AlphaNum type, which was
+// designed to be used as a parameter type that efficiently manages conversion
+// to strings and avoids copies in the above operations.
+//
+// Any routine accepting either a string or a number may accept `AlphaNum`.
+// The basic idea is that by accepting a `const AlphaNum &` as an argument
+// to your function, your callers will automagically convert bools, integers,
+// and floating point values to strings for you.
+//
+// NOTE: Use of `AlphaNum` outside of the //absl/strings package is unsupported
+// except for the specific case of function parameters of type `AlphaNum` or
+// `const AlphaNum &`. In particular, instantiating `AlphaNum` directly as a
+// stack variable is not supported.
+//
+// Conversion from 8-bit values is not accepted because, if it were, then an
+// attempt to pass ':' instead of ":" might result in a 58 ending up in your
+// result.
+//
+// Bools convert to "0" or "1". Pointers to types other than `char *` are not
+// valid inputs. No output is generated for null `char *` pointers.
+//
+// Floating point numbers are formatted with six-digit precision, which is
+// the default for "std::cout <<" or printf "%g" (the same as "%.6g").
+//
+// You can convert to hexadecimal output rather than decimal output using the
+// `Hex` type contained here. To do so, pass `Hex(my_int)` as a parameter to
+// `StrCat()` or `StrAppend()`. You may specify a minimum hex field width using
+// a `PadSpec` enum.
+//
+// -----------------------------------------------------------------------------
+
+#ifndef ABSL_STRINGS_STR_CAT_H_
+#define ABSL_STRINGS_STR_CAT_H_
+
+#include <array>
+#include <cstdint>
+#include <string>
+#include <type_traits>
+#include <vector>
+
+#include "absl/base/port.h"
+#include "absl/strings/numbers.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace strings_internal {
+// AlphaNumBuffer allows a way to pass a string to StrCat without having to do
+// memory allocation.  It is simply a pair of a fixed-size character array, and
+// a size.  Please don't use outside of absl, yet.
+template <size_t max_size>
+struct AlphaNumBuffer {
+  std::array<char, max_size> data;
+  size_t size;
+};
+
+}  // namespace strings_internal
+
+// Enum that specifies the number of significant digits to return in a `Hex` or
+// `Dec` conversion and fill character to use. A `kZeroPad2` value, for example,
+// would produce hexadecimal strings such as "0a","0f" and a 'kSpacePad5' value
+// would produce hexadecimal strings such as "    a","    f".
+enum PadSpec : uint8_t {
+  kNoPad = 1,
+  kZeroPad2,
+  kZeroPad3,
+  kZeroPad4,
+  kZeroPad5,
+  kZeroPad6,
+  kZeroPad7,
+  kZeroPad8,
+  kZeroPad9,
+  kZeroPad10,
+  kZeroPad11,
+  kZeroPad12,
+  kZeroPad13,
+  kZeroPad14,
+  kZeroPad15,
+  kZeroPad16,
+  kZeroPad17,
+  kZeroPad18,
+  kZeroPad19,
+  kZeroPad20,
+
+  kSpacePad2 = kZeroPad2 + 64,
+  kSpacePad3,
+  kSpacePad4,
+  kSpacePad5,
+  kSpacePad6,
+  kSpacePad7,
+  kSpacePad8,
+  kSpacePad9,
+  kSpacePad10,
+  kSpacePad11,
+  kSpacePad12,
+  kSpacePad13,
+  kSpacePad14,
+  kSpacePad15,
+  kSpacePad16,
+  kSpacePad17,
+  kSpacePad18,
+  kSpacePad19,
+  kSpacePad20,
+};
+
+// -----------------------------------------------------------------------------
+// Hex
+// -----------------------------------------------------------------------------
+//
+// `Hex` stores a set of hexadecimal string conversion parameters for use
+// within `AlphaNum` string conversions.
+struct Hex {
+  uint64_t value;
+  uint8_t width;
+  char fill;
+
+  template <typename Int>
+  explicit Hex(
+      Int v, PadSpec spec = absl::kNoPad,
+      typename std::enable_if<sizeof(Int) == 1 &&
+                              !std::is_pointer<Int>::value>::type* = nullptr)
+      : Hex(spec, static_cast<uint8_t>(v)) {}
+  template <typename Int>
+  explicit Hex(
+      Int v, PadSpec spec = absl::kNoPad,
+      typename std::enable_if<sizeof(Int) == 2 &&
+                              !std::is_pointer<Int>::value>::type* = nullptr)
+      : Hex(spec, static_cast<uint16_t>(v)) {}
+  template <typename Int>
+  explicit Hex(
+      Int v, PadSpec spec = absl::kNoPad,
+      typename std::enable_if<sizeof(Int) == 4 &&
+                              !std::is_pointer<Int>::value>::type* = nullptr)
+      : Hex(spec, static_cast<uint32_t>(v)) {}
+  template <typename Int>
+  explicit Hex(
+      Int v, PadSpec spec = absl::kNoPad,
+      typename std::enable_if<sizeof(Int) == 8 &&
+                              !std::is_pointer<Int>::value>::type* = nullptr)
+      : Hex(spec, static_cast<uint64_t>(v)) {}
+  template <typename Pointee>
+  explicit Hex(Pointee* v, PadSpec spec = absl::kNoPad)
+      : Hex(spec, reinterpret_cast<uintptr_t>(v)) {}
+
+ private:
+  Hex(PadSpec spec, uint64_t v)
+      : value(v),
+        width(spec == absl::kNoPad
+                  ? 1
+                  : spec >= absl::kSpacePad2 ? spec - absl::kSpacePad2 + 2
+                                             : spec - absl::kZeroPad2 + 2),
+        fill(spec >= absl::kSpacePad2 ? ' ' : '0') {}
+};
+
+// -----------------------------------------------------------------------------
+// Dec
+// -----------------------------------------------------------------------------
+//
+// `Dec` stores a set of decimal string conversion parameters for use
+// within `AlphaNum` string conversions.  Dec is slower than the default
+// integer conversion, so use it only if you need padding.
+struct Dec {
+  uint64_t value;
+  uint8_t width;
+  char fill;
+  bool neg;
+
+  template <typename Int>
+  explicit Dec(Int v, PadSpec spec = absl::kNoPad,
+               typename std::enable_if<(sizeof(Int) <= 8)>::type* = nullptr)
+      : value(v >= 0 ? static_cast<uint64_t>(v)
+                     : uint64_t{0} - static_cast<uint64_t>(v)),
+        width(spec == absl::kNoPad
+                  ? 1
+                  : spec >= absl::kSpacePad2 ? spec - absl::kSpacePad2 + 2
+                                             : spec - absl::kZeroPad2 + 2),
+        fill(spec >= absl::kSpacePad2 ? ' ' : '0'),
+        neg(v < 0) {}
+};
+
+// -----------------------------------------------------------------------------
+// AlphaNum
+// -----------------------------------------------------------------------------
+//
+// The `AlphaNum` class acts as the main parameter type for `StrCat()` and
+// `StrAppend()`, providing efficient conversion of numeric, boolean, and
+// hexadecimal values (through the `Hex` type) into strings.
+
+class AlphaNum {
+ public:
+  // No bool ctor -- bools convert to an integral type.
+  // A bool ctor would also convert incoming pointers (bletch).
+
+  AlphaNum(int x)  // NOLINT(runtime/explicit)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+  AlphaNum(unsigned int x)  // NOLINT(runtime/explicit)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+  AlphaNum(long x)  // NOLINT(*)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+  AlphaNum(unsigned long x)  // NOLINT(*)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+  AlphaNum(long long x)  // NOLINT(*)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+  AlphaNum(unsigned long long x)  // NOLINT(*)
+      : piece_(digits_,
+               numbers_internal::FastIntToBuffer(x, digits_) - &digits_[0]) {}
+
+  AlphaNum(float f)  // NOLINT(runtime/explicit)
+      : piece_(digits_, numbers_internal::SixDigitsToBuffer(f, digits_)) {}
+  AlphaNum(double f)  // NOLINT(runtime/explicit)
+      : piece_(digits_, numbers_internal::SixDigitsToBuffer(f, digits_)) {}
+
+  AlphaNum(Hex hex);  // NOLINT(runtime/explicit)
+  AlphaNum(Dec dec);  // NOLINT(runtime/explicit)
+
+  template <size_t size>
+  AlphaNum(  // NOLINT(runtime/explicit)
+      const strings_internal::AlphaNumBuffer<size>& buf)
+      : piece_(&buf.data[0], buf.size) {}
+
+  AlphaNum(const char* c_str) : piece_(c_str) {}  // NOLINT(runtime/explicit)
+  AlphaNum(absl::string_view pc) : piece_(pc) {}  // NOLINT(runtime/explicit)
+
+  template <typename Allocator>
+  AlphaNum(  // NOLINT(runtime/explicit)
+      const std::basic_string<char, std::char_traits<char>, Allocator>& str)
+      : piece_(str) {}
+
+  // Use std::string literals ":" instead of character literals ':'.
+  AlphaNum(char c) = delete;  // NOLINT(runtime/explicit)
+
+  AlphaNum(const AlphaNum&) = delete;
+  AlphaNum& operator=(const AlphaNum&) = delete;
+
+  absl::string_view::size_type size() const { return piece_.size(); }
+  const char* data() const { return piece_.data(); }
+  absl::string_view Piece() const { return piece_; }
+
+  // Normal enums are already handled by the integer formatters.
+  // This overload matches only scoped enums.
+  template <typename T,
+            typename = typename std::enable_if<
+                std::is_enum<T>{} && !std::is_convertible<T, int>{}>::type>
+  AlphaNum(T e)  // NOLINT(runtime/explicit)
+      : AlphaNum(static_cast<typename std::underlying_type<T>::type>(e)) {}
+
+  // vector<bool>::reference and const_reference require special help to
+  // convert to `AlphaNum` because it requires two user defined conversions.
+  template <
+      typename T,
+      typename std::enable_if<
+          std::is_class<T>::value &&
+          (std::is_same<T, std::vector<bool>::reference>::value ||
+           std::is_same<T, std::vector<bool>::const_reference>::value)>::type* =
+          nullptr>
+  AlphaNum(T e) : AlphaNum(static_cast<bool>(e)) {}  // NOLINT(runtime/explicit)
+
+ private:
+  absl::string_view piece_;
+  char digits_[numbers_internal::kFastToBufferSize];
+};
+
+// -----------------------------------------------------------------------------
+// StrCat()
+// -----------------------------------------------------------------------------
+//
+// Merges given strings or numbers, using no delimiter(s), returning the merged
+// result as a string.
+//
+// `StrCat()` is designed to be the fastest possible way to construct a string
+// out of a mix of raw C strings, string_views, strings, bool values,
+// and numeric values.
+//
+// Don't use `StrCat()` for user-visible strings. The localization process
+// works poorly on strings built up out of fragments.
+//
+// For clarity and performance, don't use `StrCat()` when appending to a
+// string. Use `StrAppend()` instead. In particular, avoid using any of these
+// (anti-)patterns:
+//
+//   str.append(StrCat(...))
+//   str += StrCat(...)
+//   str = StrCat(str, ...)
+//
+// The last case is the worst, with a potential to change a loop
+// from a linear time operation with O(1) dynamic allocations into a
+// quadratic time operation with O(n) dynamic allocations.
+//
+// See `StrAppend()` below for more information.
+
+namespace strings_internal {
+
+// Do not call directly - this is not part of the public API.
+std::string CatPieces(std::initializer_list<absl::string_view> pieces);
+void AppendPieces(std::string* dest,
+                  std::initializer_list<absl::string_view> pieces);
+
+}  // namespace strings_internal
+
+ABSL_MUST_USE_RESULT inline std::string StrCat() { return std::string(); }
+
+ABSL_MUST_USE_RESULT inline std::string StrCat(const AlphaNum& a) {
+  return std::string(a.data(), a.size());
+}
+
+ABSL_MUST_USE_RESULT std::string StrCat(const AlphaNum& a, const AlphaNum& b);
+ABSL_MUST_USE_RESULT std::string StrCat(const AlphaNum& a, const AlphaNum& b,
+                                        const AlphaNum& c);
+ABSL_MUST_USE_RESULT std::string StrCat(const AlphaNum& a, const AlphaNum& b,
+                                        const AlphaNum& c, const AlphaNum& d);
+
+// Support 5 or more arguments
+template <typename... AV>
+ABSL_MUST_USE_RESULT inline std::string StrCat(
+    const AlphaNum& a, const AlphaNum& b, const AlphaNum& c, const AlphaNum& d,
+    const AlphaNum& e, const AV&... args) {
+  return strings_internal::CatPieces(
+      {a.Piece(), b.Piece(), c.Piece(), d.Piece(), e.Piece(),
+       static_cast<const AlphaNum&>(args).Piece()...});
+}
+
+// -----------------------------------------------------------------------------
+// StrAppend()
+// -----------------------------------------------------------------------------
+//
+// Appends a string or set of strings to an existing string, in a similar
+// fashion to `StrCat()`.
+//
+// WARNING: `StrAppend(&str, a, b, c, ...)` requires that none of the
+// a, b, c, parameters be a reference into str. For speed, `StrAppend()` does
+// not try to check each of its input arguments to be sure that they are not
+// a subset of the string being appended to. That is, while this will work:
+//
+//   std::string s = "foo";
+//   s += s;
+//
+// This output is undefined:
+//
+//   std::string s = "foo";
+//   StrAppend(&s, s);
+//
+// This output is undefined as well, since `absl::string_view` does not own its
+// data:
+//
+//   std::string s = "foobar";
+//   absl::string_view p = s;
+//   StrAppend(&s, p);
+
+inline void StrAppend(std::string*) {}
+void StrAppend(std::string* dest, const AlphaNum& a);
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b);
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b,
+               const AlphaNum& c);
+void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b,
+               const AlphaNum& c, const AlphaNum& d);
+
+// Support 5 or more arguments
+template <typename... AV>
+inline void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b,
+                      const AlphaNum& c, const AlphaNum& d, const AlphaNum& e,
+                      const AV&... args) {
+  strings_internal::AppendPieces(
+      dest, {a.Piece(), b.Piece(), c.Piece(), d.Piece(), e.Piece(),
+             static_cast<const AlphaNum&>(args).Piece()...});
+}
+
+// Helper function for the future StrCat default floating-point format, %.6g
+// This is fast.
+inline strings_internal::AlphaNumBuffer<
+    numbers_internal::kSixDigitsToBufferSize>
+SixDigits(double d) {
+  strings_internal::AlphaNumBuffer<numbers_internal::kSixDigitsToBufferSize>
+      result;
+  result.size = numbers_internal::SixDigitsToBuffer(d, &result.data[0]);
+  return result;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STR_CAT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_format.h b/ChattingApp 000/Pods/abseil/absl/strings/str_format.h
new file mode 100644
index 0000000..2f9b4b2
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_format.h	
@@ -0,0 +1,537 @@
+//
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: str_format.h
+// -----------------------------------------------------------------------------
+//
+// The `str_format` library is a typesafe replacement for the family of
+// `printf()` string formatting routines within the `<cstdio>` standard library
+// header. Like the `printf` family, the `str_format` uses a "format string" to
+// perform argument substitutions based on types. See the `FormatSpec` section
+// below for format string documentation.
+//
+// Example:
+//
+//   std::string s = absl::StrFormat(
+//                      "%s %s You have $%d!", "Hello", name, dollars);
+//
+// The library consists of the following basic utilities:
+//
+//   * `absl::StrFormat()`, a type-safe replacement for `std::sprintf()`, to
+//     write a format string to a `string` value.
+//   * `absl::StrAppendFormat()` to append a format string to a `string`
+//   * `absl::StreamFormat()` to more efficiently write a format string to a
+//     stream, such as`std::cout`.
+//   * `absl::PrintF()`, `absl::FPrintF()` and `absl::SNPrintF()` as
+//     replacements for `std::printf()`, `std::fprintf()` and `std::snprintf()`.
+//
+//     Note: a version of `std::sprintf()` is not supported as it is
+//     generally unsafe due to buffer overflows.
+//
+// Additionally, you can provide a format string (and its associated arguments)
+// using one of the following abstractions:
+//
+//   * A `FormatSpec` class template fully encapsulates a format string and its
+//     type arguments and is usually provided to `str_format` functions as a
+//     variadic argument of type `FormatSpec<Arg...>`. The `FormatSpec<Args...>`
+//     template is evaluated at compile-time, providing type safety.
+//   * A `ParsedFormat` instance, which encapsulates a specific, pre-compiled
+//     format string for a specific set of type(s), and which can be passed
+//     between API boundaries. (The `FormatSpec` type should not be used
+//     directly except as an argument type for wrapper functions.)
+//
+// The `str_format` library provides the ability to output its format strings to
+// arbitrary sink types:
+//
+//   * A generic `Format()` function to write outputs to arbitrary sink types,
+//     which must implement a `RawSinkFormat` interface. (See
+//     `str_format_sink.h` for more information.)
+//
+//   * A `FormatUntyped()` function that is similar to `Format()` except it is
+//     loosely typed. `FormatUntyped()` is not a template and does not perform
+//     any compile-time checking of the format string; instead, it returns a
+//     boolean from a runtime check.
+//
+// In addition, the `str_format` library provides extension points for
+// augmenting formatting to new types. These extensions are fully documented
+// within the `str_format_extension.h` header file.
+
+#ifndef ABSL_STRINGS_STR_FORMAT_H_
+#define ABSL_STRINGS_STR_FORMAT_H_
+
+#include <cstdio>
+#include <string>
+
+#include "absl/strings/internal/str_format/arg.h"  // IWYU pragma: export
+#include "absl/strings/internal/str_format/bind.h"  // IWYU pragma: export
+#include "absl/strings/internal/str_format/checker.h"  // IWYU pragma: export
+#include "absl/strings/internal/str_format/extension.h"  // IWYU pragma: export
+#include "absl/strings/internal/str_format/parser.h"  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// UntypedFormatSpec
+//
+// A type-erased class that can be used directly within untyped API entry
+// points. An `UntypedFormatSpec` is specifically used as an argument to
+// `FormatUntyped()`.
+//
+// Example:
+//
+//   absl::UntypedFormatSpec format("%d");
+//   std::string out;
+//   CHECK(absl::FormatUntyped(&out, format, {absl::FormatArg(1)}));
+class UntypedFormatSpec {
+ public:
+  UntypedFormatSpec() = delete;
+  UntypedFormatSpec(const UntypedFormatSpec&) = delete;
+  UntypedFormatSpec& operator=(const UntypedFormatSpec&) = delete;
+
+  explicit UntypedFormatSpec(string_view s) : spec_(s) {}
+
+ protected:
+  explicit UntypedFormatSpec(const str_format_internal::ParsedFormatBase* pc)
+      : spec_(pc) {}
+
+ private:
+  friend str_format_internal::UntypedFormatSpecImpl;
+  str_format_internal::UntypedFormatSpecImpl spec_;
+};
+
+// FormatStreamed()
+//
+// Takes a streamable argument and returns an object that can print it
+// with '%s'. Allows printing of types that have an `operator<<` but no
+// intrinsic type support within `StrFormat()` itself.
+//
+// Example:
+//
+//   absl::StrFormat("%s", absl::FormatStreamed(obj));
+template <typename T>
+str_format_internal::StreamedWrapper<T> FormatStreamed(const T& v) {
+  return str_format_internal::StreamedWrapper<T>(v);
+}
+
+// FormatCountCapture
+//
+// This class provides a way to safely wrap `StrFormat()` captures of `%n`
+// conversions, which denote the number of characters written by a formatting
+// operation to this point, into an integer value.
+//
+// This wrapper is designed to allow safe usage of `%n` within `StrFormat(); in
+// the `printf()` family of functions, `%n` is not safe to use, as the `int *`
+// buffer can be used to capture arbitrary data.
+//
+// Example:
+//
+//   int n = 0;
+//   std::string s = absl::StrFormat("%s%d%n", "hello", 123,
+//                       absl::FormatCountCapture(&n));
+//   EXPECT_EQ(8, n);
+class FormatCountCapture {
+ public:
+  explicit FormatCountCapture(int* p) : p_(p) {}
+
+ private:
+  // FormatCountCaptureHelper is used to define FormatConvertImpl() for this
+  // class.
+  friend struct str_format_internal::FormatCountCaptureHelper;
+  // Unused() is here because of the false positive from -Wunused-private-field
+  // p_ is used in the templated function of the friend FormatCountCaptureHelper
+  // class.
+  int* Unused() { return p_; }
+  int* p_;
+};
+
+// FormatSpec
+//
+// The `FormatSpec` type defines the makeup of a format string within the
+// `str_format` library. It is a variadic class template that is evaluated at
+// compile-time, according to the format string and arguments that are passed to
+// it.
+//
+// You should not need to manipulate this type directly. You should only name it
+// if you are writing wrapper functions which accept format arguments that will
+// be provided unmodified to functions in this library. Such a wrapper function
+// might be a class method that provides format arguments and/or internally uses
+// the result of formatting.
+//
+// For a `FormatSpec` to be valid at compile-time, it must be provided as
+// either:
+//
+// * A `constexpr` literal or `absl::string_view`, which is how it most often
+//   used.
+// * A `ParsedFormat` instantiation, which ensures the format string is
+//   valid before use. (See below.)
+//
+// Example:
+//
+//   // Provided as a string literal.
+//   absl::StrFormat("Welcome to %s, Number %d!", "The Village", 6);
+//
+//   // Provided as a constexpr absl::string_view.
+//   constexpr absl::string_view formatString = "Welcome to %s, Number %d!";
+//   absl::StrFormat(formatString, "The Village", 6);
+//
+//   // Provided as a pre-compiled ParsedFormat object.
+//   // Note that this example is useful only for illustration purposes.
+//   absl::ParsedFormat<'s', 'd'> formatString("Welcome to %s, Number %d!");
+//   absl::StrFormat(formatString, "TheVillage", 6);
+//
+// A format string generally follows the POSIX syntax as used within the POSIX
+// `printf` specification.
+//
+// (See http://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html.)
+//
+// In specific, the `FormatSpec` supports the following type specifiers:
+//   * `c` for characters
+//   * `s` for strings
+//   * `d` or `i` for integers
+//   * `o` for unsigned integer conversions into octal
+//   * `x` or `X` for unsigned integer conversions into hex
+//   * `u` for unsigned integers
+//   * `f` or `F` for floating point values into decimal notation
+//   * `e` or `E` for floating point values into exponential notation
+//   * `a` or `A` for floating point values into hex exponential notation
+//   * `g` or `G` for floating point values into decimal or exponential
+//     notation based on their precision
+//   * `p` for pointer address values
+//   * `n` for the special case of writing out the number of characters
+//     written to this point. The resulting value must be captured within an
+//     `absl::FormatCountCapture` type.
+//
+// Implementation-defined behavior:
+//   * A null pointer provided to "%s" or "%p" is output as "(nil)".
+//   * A non-null pointer provided to "%p" is output in hex as if by %#x or
+//     %#lx.
+//
+// NOTE: `o`, `x\X` and `u` will convert signed values to their unsigned
+// counterpart before formatting.
+//
+// Examples:
+//     "%c", 'a'                -> "a"
+//     "%c", 32                 -> " "
+//     "%s", "C"                -> "C"
+//     "%s", std::string("C++") -> "C++"
+//     "%d", -10                -> "-10"
+//     "%o", 10                 -> "12"
+//     "%x", 16                 -> "10"
+//     "%f", 123456789          -> "123456789.000000"
+//     "%e", .01                -> "1.00000e-2"
+//     "%a", -3.0               -> "-0x1.8p+1"
+//     "%g", .01                -> "1e-2"
+//     "%p", (void*)&value      -> "0x7ffdeb6ad2a4"
+//
+//     int n = 0;
+//     std::string s = absl::StrFormat(
+//         "%s%d%n", "hello", 123, absl::FormatCountCapture(&n));
+//     EXPECT_EQ(8, n);
+//
+// The `FormatSpec` intrinsically supports all of these fundamental C++ types:
+//
+// *   Characters: `char`, `signed char`, `unsigned char`
+// *   Integers: `int`, `short`, `unsigned short`, `unsigned`, `long`,
+//         `unsigned long`, `long long`, `unsigned long long`
+// *   Floating-point: `float`, `double`, `long double`
+//
+// However, in the `str_format` library, a format conversion specifies a broader
+// C++ conceptual category instead of an exact type. For example, `%s` binds to
+// any string-like argument, so `std::string`, `absl::string_view`, and
+// `const char*` are all accepted. Likewise, `%d` accepts any integer-like
+// argument, etc.
+
+template <typename... Args>
+using FormatSpec =
+    typename str_format_internal::FormatSpecDeductionBarrier<Args...>::type;
+
+// ParsedFormat
+//
+// A `ParsedFormat` is a class template representing a preparsed `FormatSpec`,
+// with template arguments specifying the conversion characters used within the
+// format string. Such characters must be valid format type specifiers, and
+// these type specifiers are checked at compile-time.
+//
+// Instances of `ParsedFormat` can be created, copied, and reused to speed up
+// formatting loops. A `ParsedFormat` may either be constructed statically, or
+// dynamically through its `New()` factory function, which only constructs a
+// runtime object if the format is valid at that time.
+//
+// Example:
+//
+//   // Verified at compile time.
+//   absl::ParsedFormat<'s', 'd'> formatString("Welcome to %s, Number %d!");
+//   absl::StrFormat(formatString, "TheVillage", 6);
+//
+//   // Verified at runtime.
+//   auto format_runtime = absl::ParsedFormat<'d'>::New(format_string);
+//   if (format_runtime) {
+//     value = absl::StrFormat(*format_runtime, i);
+//   } else {
+//     ... error case ...
+//   }
+template <char... Conv>
+using ParsedFormat = str_format_internal::ExtendedParsedFormat<
+    str_format_internal::ConversionCharToConv(Conv)...>;
+
+// StrFormat()
+//
+// Returns a `string` given a `printf()`-style format string and zero or more
+// additional arguments. Use it as you would `sprintf()`. `StrFormat()` is the
+// primary formatting function within the `str_format` library, and should be
+// used in most cases where you need type-safe conversion of types into
+// formatted strings.
+//
+// The format string generally consists of ordinary character data along with
+// one or more format conversion specifiers (denoted by the `%` character).
+// Ordinary character data is returned unchanged into the result string, while
+// each conversion specification performs a type substitution from
+// `StrFormat()`'s other arguments. See the comments for `FormatSpec` for full
+// information on the makeup of this format string.
+//
+// Example:
+//
+//   std::string s = absl::StrFormat(
+//       "Welcome to %s, Number %d!", "The Village", 6);
+//   EXPECT_EQ("Welcome to The Village, Number 6!", s);
+//
+// Returns an empty string in case of error.
+template <typename... Args>
+ABSL_MUST_USE_RESULT std::string StrFormat(const FormatSpec<Args...>& format,
+                                           const Args&... args) {
+  return str_format_internal::FormatPack(
+      str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// StrAppendFormat()
+//
+// Appends to a `dst` string given a format string, and zero or more additional
+// arguments, returning `*dst` as a convenience for chaining purposes. Appends
+// nothing in case of error (but possibly alters its capacity).
+//
+// Example:
+//
+//   std::string orig("For example PI is approximately ");
+//   std::cout << StrAppendFormat(&orig, "%12.6f", 3.14);
+template <typename... Args>
+std::string& StrAppendFormat(std::string* dst,
+                             const FormatSpec<Args...>& format,
+                             const Args&... args) {
+  return str_format_internal::AppendPack(
+      dst, str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// StreamFormat()
+//
+// Writes to an output stream given a format string and zero or more arguments,
+// generally in a manner that is more efficient than streaming the result of
+// `absl:: StrFormat()`. The returned object must be streamed before the full
+// expression ends.
+//
+// Example:
+//
+//   std::cout << StreamFormat("%12.6f", 3.14);
+template <typename... Args>
+ABSL_MUST_USE_RESULT str_format_internal::Streamable StreamFormat(
+    const FormatSpec<Args...>& format, const Args&... args) {
+  return str_format_internal::Streamable(
+      str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// PrintF()
+//
+// Writes to stdout given a format string and zero or more arguments. This
+// function is functionally equivalent to `std::printf()` (and type-safe);
+// prefer `absl::PrintF()` over `std::printf()`.
+//
+// Example:
+//
+//   std::string_view s = "Ulaanbaatar";
+//   absl::PrintF("The capital of Mongolia is %s", s);
+//
+//   Outputs: "The capital of Mongolia is Ulaanbaatar"
+//
+template <typename... Args>
+int PrintF(const FormatSpec<Args...>& format, const Args&... args) {
+  return str_format_internal::FprintF(
+      stdout, str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// FPrintF()
+//
+// Writes to a file given a format string and zero or more arguments. This
+// function is functionally equivalent to `std::fprintf()` (and type-safe);
+// prefer `absl::FPrintF()` over `std::fprintf()`.
+//
+// Example:
+//
+//   std::string_view s = "Ulaanbaatar";
+//   absl::FPrintF(stdout, "The capital of Mongolia is %s", s);
+//
+//   Outputs: "The capital of Mongolia is Ulaanbaatar"
+//
+template <typename... Args>
+int FPrintF(std::FILE* output, const FormatSpec<Args...>& format,
+            const Args&... args) {
+  return str_format_internal::FprintF(
+      output, str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// SNPrintF()
+//
+// Writes to a sized buffer given a format string and zero or more arguments.
+// This function is functionally equivalent to `std::snprintf()` (and
+// type-safe); prefer `absl::SNPrintF()` over `std::snprintf()`.
+//
+// In particular, a successful call to `absl::SNPrintF()` writes at most `size`
+// bytes of the formatted output to `output`, including a NUL-terminator, and
+// returns the number of bytes that would have been written if truncation did
+// not occur. In the event of an error, a negative value is returned and `errno`
+// is set.
+//
+// Example:
+//
+//   std::string_view s = "Ulaanbaatar";
+//   char output[128];
+//   absl::SNPrintF(output, sizeof(output),
+//                  "The capital of Mongolia is %s", s);
+//
+//   Post-condition: output == "The capital of Mongolia is Ulaanbaatar"
+//
+template <typename... Args>
+int SNPrintF(char* output, std::size_t size, const FormatSpec<Args...>& format,
+             const Args&... args) {
+  return str_format_internal::SnprintF(
+      output, size, str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// -----------------------------------------------------------------------------
+// Custom Output Formatting Functions
+// -----------------------------------------------------------------------------
+
+// FormatRawSink
+//
+// FormatRawSink is a type erased wrapper around arbitrary sink objects
+// specifically used as an argument to `Format()`.
+// FormatRawSink does not own the passed sink object. The passed object must
+// outlive the FormatRawSink.
+class FormatRawSink {
+ public:
+  // Implicitly convert from any type that provides the hook function as
+  // described above.
+  template <typename T,
+            typename = typename std::enable_if<std::is_constructible<
+                str_format_internal::FormatRawSinkImpl, T*>::value>::type>
+  FormatRawSink(T* raw)  // NOLINT
+      : sink_(raw) {}
+
+ private:
+  friend str_format_internal::FormatRawSinkImpl;
+  str_format_internal::FormatRawSinkImpl sink_;
+};
+
+// Format()
+//
+// Writes a formatted string to an arbitrary sink object (implementing the
+// `absl::FormatRawSink` interface), using a format string and zero or more
+// additional arguments.
+//
+// By default, `std::string` and `std::ostream` are supported as destination
+// objects. If a `std::string` is used the formatted string is appended to it.
+//
+// `absl::Format()` is a generic version of `absl::StrFormat(), for custom
+// sinks. The format string, like format strings for `StrFormat()`, is checked
+// at compile-time.
+//
+// On failure, this function returns `false` and the state of the sink is
+// unspecified.
+template <typename... Args>
+bool Format(FormatRawSink raw_sink, const FormatSpec<Args...>& format,
+            const Args&... args) {
+  return str_format_internal::FormatUntyped(
+      str_format_internal::FormatRawSinkImpl::Extract(raw_sink),
+      str_format_internal::UntypedFormatSpecImpl::Extract(format),
+      {str_format_internal::FormatArgImpl(args)...});
+}
+
+// FormatArg
+//
+// A type-erased handle to a format argument specifically used as an argument to
+// `FormatUntyped()`. You may construct `FormatArg` by passing
+// reference-to-const of any printable type. `FormatArg` is both copyable and
+// assignable. The source data must outlive the `FormatArg` instance. See
+// example below.
+//
+using FormatArg = str_format_internal::FormatArgImpl;
+
+// FormatUntyped()
+//
+// Writes a formatted string to an arbitrary sink object (implementing the
+// `absl::FormatRawSink` interface), using an `UntypedFormatSpec` and zero or
+// more additional arguments.
+//
+// This function acts as the most generic formatting function in the
+// `str_format` library. The caller provides a raw sink, an unchecked format
+// string, and (usually) a runtime specified list of arguments; no compile-time
+// checking of formatting is performed within this function. As a result, a
+// caller should check the return value to verify that no error occurred.
+// On failure, this function returns `false` and the state of the sink is
+// unspecified.
+//
+// The arguments are provided in an `absl::Span<const absl::FormatArg>`.
+// Each `absl::FormatArg` object binds to a single argument and keeps a
+// reference to it. The values used to create the `FormatArg` objects must
+// outlive this function call. (See `str_format_arg.h` for information on
+// the `FormatArg` class.)_
+//
+// Example:
+//
+//   std::optional<std::string> FormatDynamic(
+//       const std::string& in_format,
+//       const vector<std::string>& in_args) {
+//     std::string out;
+//     std::vector<absl::FormatArg> args;
+//     for (const auto& v : in_args) {
+//       // It is important that 'v' is a reference to the objects in in_args.
+//       // The values we pass to FormatArg must outlive the call to
+//       // FormatUntyped.
+//       args.emplace_back(v);
+//     }
+//     absl::UntypedFormatSpec format(in_format);
+//     if (!absl::FormatUntyped(&out, format, args)) {
+//       return std::nullopt;
+//     }
+//     return std::move(out);
+//   }
+//
+ABSL_MUST_USE_RESULT inline bool FormatUntyped(
+    FormatRawSink raw_sink, const UntypedFormatSpec& format,
+    absl::Span<const FormatArg> args) {
+  return str_format_internal::FormatUntyped(
+      str_format_internal::FormatRawSinkImpl::Extract(raw_sink),
+      str_format_internal::UntypedFormatSpecImpl::Extract(format), args);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STR_FORMAT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_join.h b/ChattingApp 000/Pods/abseil/absl/strings/str_join.h
new file mode 100644
index 0000000..ae5731a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_join.h	
@@ -0,0 +1,293 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: str_join.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains functions for joining a range of elements and
+// returning the result as a std::string. StrJoin operations are specified by
+// passing a range, a separator string to use between the elements joined, and
+// an optional Formatter responsible for converting each argument in the range
+// to a string. If omitted, a default `AlphaNumFormatter()` is called on the
+// elements to be joined, using the same formatting that `absl::StrCat()` uses.
+// This package defines a number of default formatters, and you can define your
+// own implementations.
+//
+// Ranges are specified by passing a container with `std::begin()` and
+// `std::end()` iterators, container-specific `begin()` and `end()` iterators, a
+// brace-initialized `std::initializer_list`, or a `std::tuple` of heterogeneous
+// objects. The separator string is specified as an `absl::string_view`.
+//
+// Because the default formatter uses the `absl::AlphaNum` class,
+// `absl::StrJoin()`, like `absl::StrCat()`, will work out-of-the-box on
+// collections of strings, ints, floats, doubles, etc.
+//
+// Example:
+//
+//   std::vector<std::string> v = {"foo", "bar", "baz"};
+//   std::string s = absl::StrJoin(v, "-");
+//   EXPECT_EQ("foo-bar-baz", s);
+//
+// See comments on the `absl::StrJoin()` function for more examples.
+
+#ifndef ABSL_STRINGS_STR_JOIN_H_
+#define ABSL_STRINGS_STR_JOIN_H_
+
+#include <cstdio>
+#include <cstring>
+#include <initializer_list>
+#include <iterator>
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/strings/internal/str_join_internal.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// Concept: Formatter
+// -----------------------------------------------------------------------------
+//
+// A Formatter is a function object that is responsible for formatting its
+// argument as a string and appending it to a given output std::string.
+// Formatters may be implemented as function objects, lambdas, or normal
+// functions. You may provide your own Formatter to enable `absl::StrJoin()` to
+// work with arbitrary types.
+//
+// The following is an example of a custom Formatter that simply uses
+// `std::to_string()` to format an integer as a std::string.
+//
+//   struct MyFormatter {
+//     void operator()(std::string* out, int i) const {
+//       out->append(std::to_string(i));
+//     }
+//   };
+//
+// You would use the above formatter by passing an instance of it as the final
+// argument to `absl::StrJoin()`:
+//
+//   std::vector<int> v = {1, 2, 3, 4};
+//   std::string s = absl::StrJoin(v, "-", MyFormatter());
+//   EXPECT_EQ("1-2-3-4", s);
+//
+// The following standard formatters are provided within this file:
+//
+// - `AlphaNumFormatter()` (the default)
+// - `StreamFormatter()`
+// - `PairFormatter()`
+// - `DereferenceFormatter()`
+
+// AlphaNumFormatter()
+//
+// Default formatter used if none is specified. Uses `absl::AlphaNum` to convert
+// numeric arguments to strings.
+inline strings_internal::AlphaNumFormatterImpl AlphaNumFormatter() {
+  return strings_internal::AlphaNumFormatterImpl();
+}
+
+// StreamFormatter()
+//
+// Formats its argument using the << operator.
+inline strings_internal::StreamFormatterImpl StreamFormatter() {
+  return strings_internal::StreamFormatterImpl();
+}
+
+// Function Template: PairFormatter(Formatter, absl::string_view, Formatter)
+//
+// Formats a `std::pair` by putting a given separator between the pair's
+// `.first` and `.second` members. This formatter allows you to specify
+// custom Formatters for both the first and second member of each pair.
+template <typename FirstFormatter, typename SecondFormatter>
+inline strings_internal::PairFormatterImpl<FirstFormatter, SecondFormatter>
+PairFormatter(FirstFormatter f1, absl::string_view sep, SecondFormatter f2) {
+  return strings_internal::PairFormatterImpl<FirstFormatter, SecondFormatter>(
+      std::move(f1), sep, std::move(f2));
+}
+
+// Function overload of PairFormatter() for using a default
+// `AlphaNumFormatter()` for each Formatter in the pair.
+inline strings_internal::PairFormatterImpl<
+    strings_internal::AlphaNumFormatterImpl,
+    strings_internal::AlphaNumFormatterImpl>
+PairFormatter(absl::string_view sep) {
+  return PairFormatter(AlphaNumFormatter(), sep, AlphaNumFormatter());
+}
+
+// Function Template: DereferenceFormatter(Formatter)
+//
+// Formats its argument by dereferencing it and then applying the given
+// formatter. This formatter is useful for formatting a container of
+// pointer-to-T. This pattern often shows up when joining repeated fields in
+// protocol buffers.
+template <typename Formatter>
+strings_internal::DereferenceFormatterImpl<Formatter> DereferenceFormatter(
+    Formatter&& f) {
+  return strings_internal::DereferenceFormatterImpl<Formatter>(
+      std::forward<Formatter>(f));
+}
+
+// Function overload of `DererefenceFormatter()` for using a default
+// `AlphaNumFormatter()`.
+inline strings_internal::DereferenceFormatterImpl<
+    strings_internal::AlphaNumFormatterImpl>
+DereferenceFormatter() {
+  return strings_internal::DereferenceFormatterImpl<
+      strings_internal::AlphaNumFormatterImpl>(AlphaNumFormatter());
+}
+
+// -----------------------------------------------------------------------------
+// StrJoin()
+// -----------------------------------------------------------------------------
+//
+// Joins a range of elements and returns the result as a std::string.
+// `absl::StrJoin()` takes a range, a separator string to use between the
+// elements joined, and an optional Formatter responsible for converting each
+// argument in the range to a string.
+//
+// If omitted, the default `AlphaNumFormatter()` is called on the elements to be
+// joined.
+//
+// Example 1:
+//   // Joins a collection of strings. This pattern also works with a collection
+//   // of `absl::string_view` or even `const char*`.
+//   std::vector<std::string> v = {"foo", "bar", "baz"};
+//   std::string s = absl::StrJoin(v, "-");
+//   EXPECT_EQ("foo-bar-baz", s);
+//
+// Example 2:
+//   // Joins the values in the given `std::initializer_list<>` specified using
+//   // brace initialization. This pattern also works with an initializer_list
+//   // of ints or `absl::string_view` -- any `AlphaNum`-compatible type.
+//   std::string s = absl::StrJoin({"foo", "bar", "baz"}, "-");
+//   EXPECT_EQ("foo-bar-baz", s);
+//
+// Example 3:
+//   // Joins a collection of ints. This pattern also works with floats,
+//   // doubles, int64s -- any `StrCat()`-compatible type.
+//   std::vector<int> v = {1, 2, 3, -4};
+//   std::string s = absl::StrJoin(v, "-");
+//   EXPECT_EQ("1-2-3--4", s);
+//
+// Example 4:
+//   // Joins a collection of pointer-to-int. By default, pointers are
+//   // dereferenced and the pointee is formatted using the default format for
+//   // that type; such dereferencing occurs for all levels of indirection, so
+//   // this pattern works just as well for `std::vector<int**>` as for
+//   // `std::vector<int*>`.
+//   int x = 1, y = 2, z = 3;
+//   std::vector<int*> v = {&x, &y, &z};
+//   std::string s = absl::StrJoin(v, "-");
+//   EXPECT_EQ("1-2-3", s);
+//
+// Example 5:
+//   // Dereferencing of `std::unique_ptr<>` is also supported:
+//   std::vector<std::unique_ptr<int>> v
+//   v.emplace_back(new int(1));
+//   v.emplace_back(new int(2));
+//   v.emplace_back(new int(3));
+//   std::string s = absl::StrJoin(v, "-");
+//   EXPECT_EQ("1-2-3", s);
+//
+// Example 6:
+//   // Joins a `std::map`, with each key-value pair separated by an equals
+//   // sign. This pattern would also work with, say, a
+//   // `std::vector<std::pair<>>`.
+//   std::map<std::string, int> m = {
+//       std::make_pair("a", 1),
+//       std::make_pair("b", 2),
+//       std::make_pair("c", 3)};
+//   std::string s = absl::StrJoin(m, ",", absl::PairFormatter("="));
+//   EXPECT_EQ("a=1,b=2,c=3", s);
+//
+// Example 7:
+//   // These examples show how `absl::StrJoin()` handles a few common edge
+//   // cases:
+//   std::vector<std::string> v_empty;
+//   EXPECT_EQ("", absl::StrJoin(v_empty, "-"));
+//
+//   std::vector<std::string> v_one_item = {"foo"};
+//   EXPECT_EQ("foo", absl::StrJoin(v_one_item, "-"));
+//
+//   std::vector<std::string> v_empty_string = {""};
+//   EXPECT_EQ("", absl::StrJoin(v_empty_string, "-"));
+//
+//   std::vector<std::string> v_one_item_empty_string = {"a", ""};
+//   EXPECT_EQ("a-", absl::StrJoin(v_one_item_empty_string, "-"));
+//
+//   std::vector<std::string> v_two_empty_string = {"", ""};
+//   EXPECT_EQ("-", absl::StrJoin(v_two_empty_string, "-"));
+//
+// Example 8:
+//   // Joins a `std::tuple<T...>` of heterogeneous types, converting each to
+//   // a std::string using the `absl::AlphaNum` class.
+//   std::string s = absl::StrJoin(std::make_tuple(123, "abc", 0.456), "-");
+//   EXPECT_EQ("123-abc-0.456", s);
+
+template <typename Iterator, typename Formatter>
+std::string StrJoin(Iterator start, Iterator end, absl::string_view sep,
+                    Formatter&& fmt) {
+  return strings_internal::JoinAlgorithm(start, end, sep, fmt);
+}
+
+template <typename Range, typename Formatter>
+std::string StrJoin(const Range& range, absl::string_view separator,
+                    Formatter&& fmt) {
+  return strings_internal::JoinRange(range, separator, fmt);
+}
+
+template <typename T, typename Formatter>
+std::string StrJoin(std::initializer_list<T> il, absl::string_view separator,
+                    Formatter&& fmt) {
+  return strings_internal::JoinRange(il, separator, fmt);
+}
+
+template <typename... T, typename Formatter>
+std::string StrJoin(const std::tuple<T...>& value, absl::string_view separator,
+                    Formatter&& fmt) {
+  return strings_internal::JoinAlgorithm(value, separator, fmt);
+}
+
+template <typename Iterator>
+std::string StrJoin(Iterator start, Iterator end, absl::string_view separator) {
+  return strings_internal::JoinRange(start, end, separator);
+}
+
+template <typename Range>
+std::string StrJoin(const Range& range, absl::string_view separator) {
+  return strings_internal::JoinRange(range, separator);
+}
+
+template <typename T>
+std::string StrJoin(std::initializer_list<T> il,
+                    absl::string_view separator) {
+  return strings_internal::JoinRange(il, separator);
+}
+
+template <typename... T>
+std::string StrJoin(const std::tuple<T...>& value,
+                    absl::string_view separator) {
+  return strings_internal::JoinAlgorithm(value, separator, AlphaNumFormatter());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STR_JOIN_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_replace.cc b/ChattingApp 000/Pods/abseil/absl/strings/str_replace.cc
new file mode 100644
index 0000000..2bd5fa9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_replace.cc	
@@ -0,0 +1,82 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/str_replace.h"
+
+#include "absl/strings/str_cat.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace strings_internal {
+
+using FixedMapping =
+    std::initializer_list<std::pair<absl::string_view, absl::string_view>>;
+
+// Applies the ViableSubstitutions in subs_ptr to the absl::string_view s, and
+// stores the result in *result_ptr. Returns the number of substitutions that
+// occurred.
+int ApplySubstitutions(
+    absl::string_view s,
+    std::vector<strings_internal::ViableSubstitution>* subs_ptr,
+    std::string* result_ptr) {
+  auto& subs = *subs_ptr;
+  int substitutions = 0;
+  size_t pos = 0;
+  while (!subs.empty()) {
+    auto& sub = subs.back();
+    if (sub.offset >= pos) {
+      if (pos <= s.size()) {
+        StrAppend(result_ptr, s.substr(pos, sub.offset - pos), sub.replacement);
+      }
+      pos = sub.offset + sub.old.size();
+      substitutions += 1;
+    }
+    sub.offset = s.find(sub.old, pos);
+    if (sub.offset == s.npos) {
+      subs.pop_back();
+    } else {
+      // Insertion sort to ensure the last ViableSubstitution continues to be
+      // before all the others.
+      size_t index = subs.size();
+      while (--index && subs[index - 1].OccursBefore(subs[index])) {
+        std::swap(subs[index], subs[index - 1]);
+      }
+    }
+  }
+  result_ptr->append(s.data() + pos, s.size() - pos);
+  return substitutions;
+}
+
+}  // namespace strings_internal
+
+// We can implement this in terms of the generic StrReplaceAll, but
+// we must specify the template overload because C++ cannot deduce the type
+// of an initializer_list parameter to a function, and also if we don't specify
+// the type, we just call ourselves.
+//
+// Note that we implement them here, rather than in the header, so that they
+// aren't inlined.
+
+std::string StrReplaceAll(absl::string_view s,
+                          strings_internal::FixedMapping replacements) {
+  return StrReplaceAll<strings_internal::FixedMapping>(s, replacements);
+}
+
+int StrReplaceAll(strings_internal::FixedMapping replacements,
+                  std::string* target) {
+  return StrReplaceAll<strings_internal::FixedMapping>(replacements, target);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_replace.h b/ChattingApp 000/Pods/abseil/absl/strings/str_replace.h
new file mode 100644
index 0000000..273c707
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_replace.h	
@@ -0,0 +1,219 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: str_replace.h
+// -----------------------------------------------------------------------------
+//
+// This file defines `absl::StrReplaceAll()`, a general-purpose string
+// replacement function designed for large, arbitrary text substitutions,
+// especially on strings which you are receiving from some other system for
+// further processing (e.g. processing regular expressions, escaping HTML
+// entities, etc.). `StrReplaceAll` is designed to be efficient even when only
+// one substitution is being performed, or when substitution is rare.
+//
+// If the string being modified is known at compile-time, and the substitutions
+// vary, `absl::Substitute()` may be a better choice.
+//
+// Example:
+//
+// std::string html_escaped = absl::StrReplaceAll(user_input, {
+//                                                {"&", "&amp;"},
+//                                                {"<", "&lt;"},
+//                                                {">", "&gt;"},
+//                                                {"\"", "&quot;"},
+//                                                {"'", "&#39;"}});
+#ifndef ABSL_STRINGS_STR_REPLACE_H_
+#define ABSL_STRINGS_STR_REPLACE_H_
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/base/attributes.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// StrReplaceAll()
+//
+// Replaces character sequences within a given string with replacements provided
+// within an initializer list of key/value pairs. Candidate replacements are
+// considered in order as they occur within the string, with earlier matches
+// taking precedence, and longer matches taking precedence for candidates
+// starting at the same position in the string. Once a substitution is made, the
+// replaced text is not considered for any further substitutions.
+//
+// Example:
+//
+//   std::string s = absl::StrReplaceAll(
+//       "$who bought $count #Noun. Thanks $who!",
+//       {{"$count", absl::StrCat(5)},
+//        {"$who", "Bob"},
+//        {"#Noun", "Apples"}});
+//   EXPECT_EQ("Bob bought 5 Apples. Thanks Bob!", s);
+ABSL_MUST_USE_RESULT std::string StrReplaceAll(
+    absl::string_view s,
+    std::initializer_list<std::pair<absl::string_view, absl::string_view>>
+        replacements);
+
+// Overload of `StrReplaceAll()` to accept a container of key/value replacement
+// pairs (typically either an associative map or a `std::vector` of `std::pair`
+// elements). A vector of pairs is generally more efficient.
+//
+// Examples:
+//
+//   std::map<const absl::string_view, const absl::string_view> replacements;
+//   replacements["$who"] = "Bob";
+//   replacements["$count"] = "5";
+//   replacements["#Noun"] = "Apples";
+//   std::string s = absl::StrReplaceAll(
+//       "$who bought $count #Noun. Thanks $who!",
+//       replacements);
+//   EXPECT_EQ("Bob bought 5 Apples. Thanks Bob!", s);
+//
+//   // A std::vector of std::pair elements can be more efficient.
+//   std::vector<std::pair<const absl::string_view, std::string>> replacements;
+//   replacements.push_back({"&", "&amp;"});
+//   replacements.push_back({"<", "&lt;"});
+//   replacements.push_back({">", "&gt;"});
+//   std::string s = absl::StrReplaceAll("if (ptr < &foo)",
+//                                  replacements);
+//   EXPECT_EQ("if (ptr &lt; &amp;foo)", s);
+template <typename StrToStrMapping>
+std::string StrReplaceAll(absl::string_view s,
+                          const StrToStrMapping& replacements);
+
+// Overload of `StrReplaceAll()` to replace character sequences within a given
+// output string *in place* with replacements provided within an initializer
+// list of key/value pairs, returning the number of substitutions that occurred.
+//
+// Example:
+//
+//   std::string s = std::string("$who bought $count #Noun. Thanks $who!");
+//   int count;
+//   count = absl::StrReplaceAll({{"$count", absl::StrCat(5)},
+//                               {"$who", "Bob"},
+//                               {"#Noun", "Apples"}}, &s);
+//  EXPECT_EQ(count, 4);
+//  EXPECT_EQ("Bob bought 5 Apples. Thanks Bob!", s);
+int StrReplaceAll(
+    std::initializer_list<std::pair<absl::string_view, absl::string_view>>
+        replacements,
+    std::string* target);
+
+// Overload of `StrReplaceAll()` to replace patterns within a given output
+// string *in place* with replacements provided within a container of key/value
+// pairs.
+//
+// Example:
+//
+//   std::string s = std::string("if (ptr < &foo)");
+//   int count = absl::StrReplaceAll({{"&", "&amp;"},
+//                                    {"<", "&lt;"},
+//                                    {">", "&gt;"}}, &s);
+//  EXPECT_EQ(count, 2);
+//  EXPECT_EQ("if (ptr &lt; &amp;foo)", s);
+template <typename StrToStrMapping>
+int StrReplaceAll(const StrToStrMapping& replacements, std::string* target);
+
+// Implementation details only, past this point.
+namespace strings_internal {
+
+struct ViableSubstitution {
+  absl::string_view old;
+  absl::string_view replacement;
+  size_t offset;
+
+  ViableSubstitution(absl::string_view old_str,
+                     absl::string_view replacement_str, size_t offset_val)
+      : old(old_str), replacement(replacement_str), offset(offset_val) {}
+
+  // One substitution occurs "before" another (takes priority) if either
+  // it has the lowest offset, or it has the same offset but a larger size.
+  bool OccursBefore(const ViableSubstitution& y) const {
+    if (offset != y.offset) return offset < y.offset;
+    return old.size() > y.old.size();
+  }
+};
+
+// Build a vector of ViableSubstitutions based on the given list of
+// replacements. subs can be implemented as a priority_queue. However, it turns
+// out that most callers have small enough a list of substitutions that the
+// overhead of such a queue isn't worth it.
+template <typename StrToStrMapping>
+std::vector<ViableSubstitution> FindSubstitutions(
+    absl::string_view s, const StrToStrMapping& replacements) {
+  std::vector<ViableSubstitution> subs;
+  subs.reserve(replacements.size());
+
+  for (const auto& rep : replacements) {
+    using std::get;
+    absl::string_view old(get<0>(rep));
+
+    size_t pos = s.find(old);
+    if (pos == s.npos) continue;
+
+    // Ignore attempts to replace "". This condition is almost never true,
+    // but above condition is frequently true. That's why we test for this
+    // now and not before.
+    if (old.empty()) continue;
+
+    subs.emplace_back(old, get<1>(rep), pos);
+
+    // Insertion sort to ensure the last ViableSubstitution comes before
+    // all the others.
+    size_t index = subs.size();
+    while (--index && subs[index - 1].OccursBefore(subs[index])) {
+      std::swap(subs[index], subs[index - 1]);
+    }
+  }
+  return subs;
+}
+
+int ApplySubstitutions(absl::string_view s,
+                       std::vector<ViableSubstitution>* subs_ptr,
+                       std::string* result_ptr);
+
+}  // namespace strings_internal
+
+template <typename StrToStrMapping>
+std::string StrReplaceAll(absl::string_view s,
+                          const StrToStrMapping& replacements) {
+  auto subs = strings_internal::FindSubstitutions(s, replacements);
+  std::string result;
+  result.reserve(s.size());
+  strings_internal::ApplySubstitutions(s, &subs, &result);
+  return result;
+}
+
+template <typename StrToStrMapping>
+int StrReplaceAll(const StrToStrMapping& replacements, std::string* target) {
+  auto subs = strings_internal::FindSubstitutions(*target, replacements);
+  if (subs.empty()) return 0;
+
+  std::string result;
+  result.reserve(target->size());
+  int substitutions =
+      strings_internal::ApplySubstitutions(*target, &subs, &result);
+  target->swap(result);
+  return substitutions;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STR_REPLACE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_split.cc b/ChattingApp 000/Pods/abseil/absl/strings/str_split.cc
new file mode 100644
index 0000000..d0f8666
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_split.cc	
@@ -0,0 +1,139 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/str_split.h"
+
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <iterator>
+#include <limits>
+#include <memory>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/strings/ascii.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+
+// This GenericFind() template function encapsulates the finding algorithm
+// shared between the ByString and ByAnyChar delimiters. The FindPolicy
+// template parameter allows each delimiter to customize the actual find
+// function to use and the length of the found delimiter. For example, the
+// Literal delimiter will ultimately use absl::string_view::find(), and the
+// AnyOf delimiter will use absl::string_view::find_first_of().
+template <typename FindPolicy>
+absl::string_view GenericFind(absl::string_view text,
+                              absl::string_view delimiter, size_t pos,
+                              FindPolicy find_policy) {
+  if (delimiter.empty() && text.length() > 0) {
+    // Special case for empty std::string delimiters: always return a zero-length
+    // absl::string_view referring to the item at position 1 past pos.
+    return absl::string_view(text.data() + pos + 1, 0);
+  }
+  size_t found_pos = absl::string_view::npos;
+  absl::string_view found(text.data() + text.size(),
+                          0);  // By default, not found
+  found_pos = find_policy.Find(text, delimiter, pos);
+  if (found_pos != absl::string_view::npos) {
+    found = absl::string_view(text.data() + found_pos,
+                              find_policy.Length(delimiter));
+  }
+  return found;
+}
+
+// Finds using absl::string_view::find(), therefore the length of the found
+// delimiter is delimiter.length().
+struct LiteralPolicy {
+  size_t Find(absl::string_view text, absl::string_view delimiter, size_t pos) {
+    return text.find(delimiter, pos);
+  }
+  size_t Length(absl::string_view delimiter) { return delimiter.length(); }
+};
+
+// Finds using absl::string_view::find_first_of(), therefore the length of the
+// found delimiter is 1.
+struct AnyOfPolicy {
+  size_t Find(absl::string_view text, absl::string_view delimiter, size_t pos) {
+    return text.find_first_of(delimiter, pos);
+  }
+  size_t Length(absl::string_view /* delimiter */) { return 1; }
+};
+
+}  // namespace
+
+//
+// ByString
+//
+
+ByString::ByString(absl::string_view sp) : delimiter_(sp) {}
+
+absl::string_view ByString::Find(absl::string_view text, size_t pos) const {
+  if (delimiter_.length() == 1) {
+    // Much faster to call find on a single character than on an
+    // absl::string_view.
+    size_t found_pos = text.find(delimiter_[0], pos);
+    if (found_pos == absl::string_view::npos)
+      return absl::string_view(text.data() + text.size(), 0);
+    return text.substr(found_pos, 1);
+  }
+  return GenericFind(text, delimiter_, pos, LiteralPolicy());
+}
+
+//
+// ByChar
+//
+
+absl::string_view ByChar::Find(absl::string_view text, size_t pos) const {
+  size_t found_pos = text.find(c_, pos);
+  if (found_pos == absl::string_view::npos)
+    return absl::string_view(text.data() + text.size(), 0);
+  return text.substr(found_pos, 1);
+}
+
+//
+// ByAnyChar
+//
+
+ByAnyChar::ByAnyChar(absl::string_view sp) : delimiters_(sp) {}
+
+absl::string_view ByAnyChar::Find(absl::string_view text, size_t pos) const {
+  return GenericFind(text, delimiters_, pos, AnyOfPolicy());
+}
+
+//
+// ByLength
+//
+ByLength::ByLength(ptrdiff_t length) : length_(length) {
+  ABSL_RAW_CHECK(length > 0, "");
+}
+
+absl::string_view ByLength::Find(absl::string_view text,
+                                      size_t pos) const {
+  pos = std::min(pos, text.size());  // truncate `pos`
+  absl::string_view substr = text.substr(pos);
+  // If the std::string is shorter than the chunk size we say we
+  // "can't find the delimiter" so this will be the last chunk.
+  if (substr.length() <= static_cast<size_t>(length_))
+    return absl::string_view(text.data() + text.size(), 0);
+
+  return absl::string_view(substr.data() + length_, 0);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/str_split.h b/ChattingApp 000/Pods/abseil/absl/strings/str_split.h
new file mode 100644
index 0000000..a79cd4a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/str_split.h	
@@ -0,0 +1,513 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: str_split.h
+// -----------------------------------------------------------------------------
+//
+// This file contains functions for splitting strings. It defines the main
+// `StrSplit()` function, several delimiters for determining the boundaries on
+// which to split the string, and predicates for filtering delimited results.
+// `StrSplit()` adapts the returned collection to the type specified by the
+// caller.
+//
+// Example:
+//
+//   // Splits the given string on commas. Returns the results in a
+//   // vector of strings.
+//   std::vector<std::string> v = absl::StrSplit("a,b,c", ',');
+//   // Can also use ","
+//   // v[0] == "a", v[1] == "b", v[2] == "c"
+//
+// See StrSplit() below for more information.
+#ifndef ABSL_STRINGS_STR_SPLIT_H_
+#define ABSL_STRINGS_STR_SPLIT_H_
+
+#include <algorithm>
+#include <cstddef>
+#include <map>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/strings/internal/str_split_internal.h"
+#include "absl/strings/string_view.h"
+#include "absl/strings/strip.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+//------------------------------------------------------------------------------
+// Delimiters
+//------------------------------------------------------------------------------
+//
+// `StrSplit()` uses delimiters to define the boundaries between elements in the
+// provided input. Several `Delimiter` types are defined below. If a string
+// (`const char*`, `std::string`, or `absl::string_view`) is passed in place of
+// an explicit `Delimiter` object, `StrSplit()` treats it the same way as if it
+// were passed a `ByString` delimiter.
+//
+// A `Delimiter` is an object with a `Find()` function that knows how to find
+// the first occurrence of itself in a given `absl::string_view`.
+//
+// The following `Delimiter` types are available for use within `StrSplit()`:
+//
+//   - `ByString` (default for string arguments)
+//   - `ByChar` (default for a char argument)
+//   - `ByAnyChar`
+//   - `ByLength`
+//   - `MaxSplits`
+//
+// A Delimiter's `Find()` member function will be passed an input `text` that is
+// to be split and a position (`pos`) to begin searching for the next delimiter
+// in `text`. The returned absl::string_view should refer to the next occurrence
+// (after `pos`) of the represented delimiter; this returned absl::string_view
+// represents the next location where the input `text` should be broken.
+//
+// The returned absl::string_view may be zero-length if the Delimiter does not
+// represent a part of the string (e.g., a fixed-length delimiter). If no
+// delimiter is found in the input `text`, a zero-length absl::string_view
+// referring to `text.end()` should be returned (e.g.,
+// `text.substr(text.size())`). It is important that the returned
+// absl::string_view always be within the bounds of the input `text` given as an
+// argument--it must not refer to a string that is physically located outside of
+// the given string.
+//
+// The following example is a simple Delimiter object that is created with a
+// single char and will look for that char in the text passed to the `Find()`
+// function:
+//
+//   struct SimpleDelimiter {
+//     const char c_;
+//     explicit SimpleDelimiter(char c) : c_(c) {}
+//     absl::string_view Find(absl::string_view text, size_t pos) {
+//       auto found = text.find(c_, pos);
+//       if (found == absl::string_view::npos)
+//         return text.substr(text.size());
+//
+//       return text.substr(found, 1);
+//     }
+//   };
+
+// ByString
+//
+// A sub-string delimiter. If `StrSplit()` is passed a string in place of a
+// `Delimiter` object, the string will be implicitly converted into a
+// `ByString` delimiter.
+//
+// Example:
+//
+//   // Because a string literal is converted to an `absl::ByString`,
+//   // the following two splits are equivalent.
+//
+//   std::vector<std::string> v1 = absl::StrSplit("a, b, c", ", ");
+//
+//   using absl::ByString;
+//   std::vector<std::string> v2 = absl::StrSplit("a, b, c",
+//                                                ByString(", "));
+//   // v[0] == "a", v[1] == "b", v[2] == "c"
+class ByString {
+ public:
+  explicit ByString(absl::string_view sp);
+  absl::string_view Find(absl::string_view text, size_t pos) const;
+
+ private:
+  const std::string delimiter_;
+};
+
+// ByChar
+//
+// A single character delimiter. `ByChar` is functionally equivalent to a
+// 1-char string within a `ByString` delimiter, but slightly more efficient.
+//
+// Example:
+//
+//   // Because a char literal is converted to a absl::ByChar,
+//   // the following two splits are equivalent.
+//   std::vector<std::string> v1 = absl::StrSplit("a,b,c", ',');
+//   using absl::ByChar;
+//   std::vector<std::string> v2 = absl::StrSplit("a,b,c", ByChar(','));
+//   // v[0] == "a", v[1] == "b", v[2] == "c"
+//
+// `ByChar` is also the default delimiter if a single character is given
+// as the delimiter to `StrSplit()`. For example, the following calls are
+// equivalent:
+//
+//   std::vector<std::string> v = absl::StrSplit("a-b", '-');
+//
+//   using absl::ByChar;
+//   std::vector<std::string> v = absl::StrSplit("a-b", ByChar('-'));
+//
+class ByChar {
+ public:
+  explicit ByChar(char c) : c_(c) {}
+  absl::string_view Find(absl::string_view text, size_t pos) const;
+
+ private:
+  char c_;
+};
+
+// ByAnyChar
+//
+// A delimiter that will match any of the given byte-sized characters within
+// its provided string.
+//
+// Note: this delimiter works with single-byte string data, but does not work
+// with variable-width encodings, such as UTF-8.
+//
+// Example:
+//
+//   using absl::ByAnyChar;
+//   std::vector<std::string> v = absl::StrSplit("a,b=c", ByAnyChar(",="));
+//   // v[0] == "a", v[1] == "b", v[2] == "c"
+//
+// If `ByAnyChar` is given the empty string, it behaves exactly like
+// `ByString` and matches each individual character in the input string.
+//
+class ByAnyChar {
+ public:
+  explicit ByAnyChar(absl::string_view sp);
+  absl::string_view Find(absl::string_view text, size_t pos) const;
+
+ private:
+  const std::string delimiters_;
+};
+
+// ByLength
+//
+// A delimiter for splitting into equal-length strings. The length argument to
+// the constructor must be greater than 0.
+//
+// Note: this delimiter works with single-byte string data, but does not work
+// with variable-width encodings, such as UTF-8.
+//
+// Example:
+//
+//   using absl::ByLength;
+//   std::vector<std::string> v = absl::StrSplit("123456789", ByLength(3));
+
+//   // v[0] == "123", v[1] == "456", v[2] == "789"
+//
+// Note that the string does not have to be a multiple of the fixed split
+// length. In such a case, the last substring will be shorter.
+//
+//   using absl::ByLength;
+//   std::vector<std::string> v = absl::StrSplit("12345", ByLength(2));
+//
+//   // v[0] == "12", v[1] == "34", v[2] == "5"
+class ByLength {
+ public:
+  explicit ByLength(ptrdiff_t length);
+  absl::string_view Find(absl::string_view text, size_t pos) const;
+
+ private:
+  const ptrdiff_t length_;
+};
+
+namespace strings_internal {
+
+// A traits-like metafunction for selecting the default Delimiter object type
+// for a particular Delimiter type. The base case simply exposes type Delimiter
+// itself as the delimiter's Type. However, there are specializations for
+// string-like objects that map them to the ByString delimiter object.
+// This allows functions like absl::StrSplit() and absl::MaxSplits() to accept
+// string-like objects (e.g., ',') as delimiter arguments but they will be
+// treated as if a ByString delimiter was given.
+template <typename Delimiter>
+struct SelectDelimiter {
+  using type = Delimiter;
+};
+
+template <>
+struct SelectDelimiter<char> {
+  using type = ByChar;
+};
+template <>
+struct SelectDelimiter<char*> {
+  using type = ByString;
+};
+template <>
+struct SelectDelimiter<const char*> {
+  using type = ByString;
+};
+template <>
+struct SelectDelimiter<absl::string_view> {
+  using type = ByString;
+};
+template <>
+struct SelectDelimiter<std::string> {
+  using type = ByString;
+};
+
+// Wraps another delimiter and sets a max number of matches for that delimiter.
+template <typename Delimiter>
+class MaxSplitsImpl {
+ public:
+  MaxSplitsImpl(Delimiter delimiter, int limit)
+      : delimiter_(delimiter), limit_(limit), count_(0) {}
+  absl::string_view Find(absl::string_view text, size_t pos) {
+    if (count_++ == limit_) {
+      return absl::string_view(text.data() + text.size(),
+                               0);  // No more matches.
+    }
+    return delimiter_.Find(text, pos);
+  }
+
+ private:
+  Delimiter delimiter_;
+  const int limit_;
+  int count_;
+};
+
+}  // namespace strings_internal
+
+// MaxSplits()
+//
+// A delimiter that limits the number of matches which can occur to the passed
+// `limit`. The last element in the returned collection will contain all
+// remaining unsplit pieces, which may contain instances of the delimiter.
+// The collection will contain at most `limit` + 1 elements.
+// Example:
+//
+//   using absl::MaxSplits;
+//   std::vector<std::string> v = absl::StrSplit("a,b,c", MaxSplits(',', 1));
+//
+//   // v[0] == "a", v[1] == "b,c"
+template <typename Delimiter>
+inline strings_internal::MaxSplitsImpl<
+    typename strings_internal::SelectDelimiter<Delimiter>::type>
+MaxSplits(Delimiter delimiter, int limit) {
+  typedef
+      typename strings_internal::SelectDelimiter<Delimiter>::type DelimiterType;
+  return strings_internal::MaxSplitsImpl<DelimiterType>(
+      DelimiterType(delimiter), limit);
+}
+
+//------------------------------------------------------------------------------
+// Predicates
+//------------------------------------------------------------------------------
+//
+// Predicates filter the results of a `StrSplit()` by determining whether or not
+// a resultant element is included in the result set. A predicate may be passed
+// as an optional third argument to the `StrSplit()` function.
+//
+// Predicates are unary functions (or functors) that take a single
+// `absl::string_view` argument and return a bool indicating whether the
+// argument should be included (`true`) or excluded (`false`).
+//
+// Predicates are useful when filtering out empty substrings. By default, empty
+// substrings may be returned by `StrSplit()`, which is similar to the way split
+// functions work in other programming languages.
+
+// AllowEmpty()
+//
+// Always returns `true`, indicating that all strings--including empty
+// strings--should be included in the split output. This predicate is not
+// strictly needed because this is the default behavior of `StrSplit()`;
+// however, it might be useful at some call sites to make the intent explicit.
+//
+// Example:
+//
+//  std::vector<std::string> v = absl::StrSplit(" a , ,,b,", ',', AllowEmpty());
+//
+//  // v[0] == " a ", v[1] == " ", v[2] == "", v[3] = "b", v[4] == ""
+struct AllowEmpty {
+  bool operator()(absl::string_view) const { return true; }
+};
+
+// SkipEmpty()
+//
+// Returns `false` if the given `absl::string_view` is empty, indicating that
+// `StrSplit()` should omit the empty string.
+//
+// Example:
+//
+//   std::vector<std::string> v = absl::StrSplit(",a,,b,", ',', SkipEmpty());
+//
+//   // v[0] == "a", v[1] == "b"
+//
+// Note: `SkipEmpty()` does not consider a string containing only whitespace
+// to be empty. To skip such whitespace as well, use the `SkipWhitespace()`
+// predicate.
+struct SkipEmpty {
+  bool operator()(absl::string_view sp) const { return !sp.empty(); }
+};
+
+// SkipWhitespace()
+//
+// Returns `false` if the given `absl::string_view` is empty *or* contains only
+// whitespace, indicating that `StrSplit()` should omit the string.
+//
+// Example:
+//
+//   std::vector<std::string> v = absl::StrSplit(" a , ,,b,",
+//                                               ',', SkipWhitespace());
+//   // v[0] == " a ", v[1] == "b"
+//
+//   // SkipEmpty() would return whitespace elements
+//   std::vector<std::string> v = absl::StrSplit(" a , ,,b,", ',', SkipEmpty());
+//   // v[0] == " a ", v[1] == " ", v[2] == "b"
+struct SkipWhitespace {
+  bool operator()(absl::string_view sp) const {
+    sp = absl::StripAsciiWhitespace(sp);
+    return !sp.empty();
+  }
+};
+
+//------------------------------------------------------------------------------
+//                                  StrSplit()
+//------------------------------------------------------------------------------
+
+// StrSplit()
+//
+// Splits a given string based on the provided `Delimiter` object, returning the
+// elements within the type specified by the caller. Optionally, you may pass a
+// `Predicate` to `StrSplit()` indicating whether to include or exclude the
+// resulting element within the final result set. (See the overviews for
+// Delimiters and Predicates above.)
+//
+// Example:
+//
+//   std::vector<std::string> v = absl::StrSplit("a,b,c,d", ',');
+//   // v[0] == "a", v[1] == "b", v[2] == "c", v[3] == "d"
+//
+// You can also provide an explicit `Delimiter` object:
+//
+// Example:
+//
+//   using absl::ByAnyChar;
+//   std::vector<std::string> v = absl::StrSplit("a,b=c", ByAnyChar(",="));
+//   // v[0] == "a", v[1] == "b", v[2] == "c"
+//
+// See above for more information on delimiters.
+//
+// By default, empty strings are included in the result set. You can optionally
+// include a third `Predicate` argument to apply a test for whether the
+// resultant element should be included in the result set:
+//
+// Example:
+//
+//   std::vector<std::string> v = absl::StrSplit(" a , ,,b,",
+//                                               ',', SkipWhitespace());
+//   // v[0] == " a ", v[1] == "b"
+//
+// See above for more information on predicates.
+//
+//------------------------------------------------------------------------------
+// StrSplit() Return Types
+//------------------------------------------------------------------------------
+//
+// The `StrSplit()` function adapts the returned collection to the collection
+// specified by the caller (e.g. `std::vector` above). The returned collections
+// may contain `std::string`, `absl::string_view` (in which case the original
+// string being split must ensure that it outlives the collection), or any
+// object that can be explicitly created from an `absl::string_view`. This
+// behavior works for:
+//
+// 1) All standard STL containers including `std::vector`, `std::list`,
+//    `std::deque`, `std::set`,`std::multiset`, 'std::map`, and `std::multimap`
+// 2) `std::pair` (which is not actually a container). See below.
+//
+// Example:
+//
+//   // The results are returned as `absl::string_view` objects. Note that we
+//   // have to ensure that the input string outlives any results.
+//   std::vector<absl::string_view> v = absl::StrSplit("a,b,c", ',');
+//
+//   // Stores results in a std::set<std::string>, which also performs
+//   // de-duplication and orders the elements in ascending order.
+//   std::set<std::string> a = absl::StrSplit("b,a,c,a,b", ',');
+//   // v[0] == "a", v[1] == "b", v[2] = "c"
+//
+//   // `StrSplit()` can be used within a range-based for loop, in which case
+//   // each element will be of type `absl::string_view`.
+//   std::vector<std::string> v;
+//   for (const auto sv : absl::StrSplit("a,b,c", ',')) {
+//     if (sv != "b") v.emplace_back(sv);
+//   }
+//   // v[0] == "a", v[1] == "c"
+//
+//   // Stores results in a map. The map implementation assumes that the input
+//   // is provided as a series of key/value pairs. For example, the 0th element
+//   // resulting from the split will be stored as a key to the 1st element. If
+//   // an odd number of elements are resolved, the last element is paired with
+//   // a default-constructed value (e.g., empty string).
+//   std::map<std::string, std::string> m = absl::StrSplit("a,b,c", ',');
+//   // m["a"] == "b", m["c"] == ""     // last component value equals ""
+//
+// Splitting to `std::pair` is an interesting case because it can hold only two
+// elements and is not a collection type. When splitting to a `std::pair` the
+// first two split strings become the `std::pair` `.first` and `.second`
+// members, respectively. The remaining split substrings are discarded. If there
+// are less than two split substrings, the empty string is used for the
+// corresponding
+// `std::pair` member.
+//
+// Example:
+//
+//   // Stores first two split strings as the members in a std::pair.
+//   std::pair<std::string, std::string> p = absl::StrSplit("a,b,c", ',');
+//   // p.first == "a", p.second == "b"       // "c" is omitted.
+//
+// The `StrSplit()` function can be used multiple times to perform more
+// complicated splitting logic, such as intelligently parsing key-value pairs.
+//
+// Example:
+//
+//   // The input string "a=b=c,d=e,f=,g" becomes
+//   // { "a" => "b=c", "d" => "e", "f" => "", "g" => "" }
+//   std::map<std::string, std::string> m;
+//   for (absl::string_view sp : absl::StrSplit("a=b=c,d=e,f=,g", ',')) {
+//     m.insert(absl::StrSplit(sp, absl::MaxSplits('=', 1)));
+//   }
+//   EXPECT_EQ("b=c", m.find("a")->second);
+//   EXPECT_EQ("e", m.find("d")->second);
+//   EXPECT_EQ("", m.find("f")->second);
+//   EXPECT_EQ("", m.find("g")->second);
+//
+// WARNING: Due to a legacy bug that is maintained for backward compatibility,
+// splitting the following empty string_views produces different results:
+//
+//   absl::StrSplit(absl::string_view(""), '-');  // {""}
+//   absl::StrSplit(absl::string_view(), '-');    // {}, but should be {""}
+//
+// Try not to depend on this distinction because the bug may one day be fixed.
+template <typename Delimiter>
+strings_internal::Splitter<
+    typename strings_internal::SelectDelimiter<Delimiter>::type, AllowEmpty>
+StrSplit(strings_internal::ConvertibleToStringView text, Delimiter d) {
+  using DelimiterType =
+      typename strings_internal::SelectDelimiter<Delimiter>::type;
+  return strings_internal::Splitter<DelimiterType, AllowEmpty>(
+      std::move(text), DelimiterType(d), AllowEmpty());
+}
+
+template <typename Delimiter, typename Predicate>
+strings_internal::Splitter<
+    typename strings_internal::SelectDelimiter<Delimiter>::type, Predicate>
+StrSplit(strings_internal::ConvertibleToStringView text, Delimiter d,
+         Predicate p) {
+  using DelimiterType =
+      typename strings_internal::SelectDelimiter<Delimiter>::type;
+  return strings_internal::Splitter<DelimiterType, Predicate>(
+      std::move(text), DelimiterType(d), std::move(p));
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STR_SPLIT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/string_view.cc b/ChattingApp 000/Pods/abseil/absl/strings/string_view.cc
new file mode 100644
index 0000000..c5f5de9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/string_view.cc	
@@ -0,0 +1,235 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/string_view.h"
+
+#ifndef ABSL_USES_STD_STRING_VIEW
+
+#include <algorithm>
+#include <climits>
+#include <cstring>
+#include <ostream>
+
+#include "absl/strings/internal/memutil.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+void WritePadding(std::ostream& o, size_t pad) {
+  char fill_buf[32];
+  memset(fill_buf, o.fill(), sizeof(fill_buf));
+  while (pad) {
+    size_t n = std::min(pad, sizeof(fill_buf));
+    o.write(fill_buf, n);
+    pad -= n;
+  }
+}
+
+class LookupTable {
+ public:
+  // For each character in wanted, sets the index corresponding
+  // to the ASCII code of that character. This is used by
+  // the find_.*_of methods below to tell whether or not a character is in
+  // the lookup table in constant time.
+  explicit LookupTable(string_view wanted) {
+    for (char c : wanted) {
+      table_[Index(c)] = true;
+    }
+  }
+  bool operator[](char c) const { return table_[Index(c)]; }
+
+ private:
+  static unsigned char Index(char c) { return static_cast<unsigned char>(c); }
+  bool table_[UCHAR_MAX + 1] = {};
+};
+
+}  // namespace
+
+std::ostream& operator<<(std::ostream& o, string_view piece) {
+  std::ostream::sentry sentry(o);
+  if (sentry) {
+    size_t lpad = 0;
+    size_t rpad = 0;
+    if (static_cast<size_t>(o.width()) > piece.size()) {
+      size_t pad = o.width() - piece.size();
+      if ((o.flags() & o.adjustfield) == o.left) {
+        rpad = pad;
+      } else {
+        lpad = pad;
+      }
+    }
+    if (lpad) WritePadding(o, lpad);
+    o.write(piece.data(), piece.size());
+    if (rpad) WritePadding(o, rpad);
+    o.width(0);
+  }
+  return o;
+}
+
+string_view::size_type string_view::find(string_view s, size_type pos) const
+    noexcept {
+  if (empty() || pos > length_) {
+    if (empty() && pos == 0 && s.empty()) return 0;
+    return npos;
+  }
+  const char* result =
+      strings_internal::memmatch(ptr_ + pos, length_ - pos, s.ptr_, s.length_);
+  return result ? result - ptr_ : npos;
+}
+
+string_view::size_type string_view::find(char c, size_type pos) const noexcept {
+  if (empty() || pos >= length_) {
+    return npos;
+  }
+  const char* result =
+      static_cast<const char*>(memchr(ptr_ + pos, c, length_ - pos));
+  return result != nullptr ? result - ptr_ : npos;
+}
+
+string_view::size_type string_view::rfind(string_view s, size_type pos) const
+    noexcept {
+  if (length_ < s.length_) return npos;
+  if (s.empty()) return std::min(length_, pos);
+  const char* last = ptr_ + std::min(length_ - s.length_, pos) + s.length_;
+  const char* result = std::find_end(ptr_, last, s.ptr_, s.ptr_ + s.length_);
+  return result != last ? result - ptr_ : npos;
+}
+
+// Search range is [0..pos] inclusive.  If pos == npos, search everything.
+string_view::size_type string_view::rfind(char c, size_type pos) const
+    noexcept {
+  // Note: memrchr() is not available on Windows.
+  if (empty()) return npos;
+  for (size_type i = std::min(pos, length_ - 1);; --i) {
+    if (ptr_[i] == c) {
+      return i;
+    }
+    if (i == 0) break;
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_first_of(string_view s,
+                                                  size_type pos) const
+    noexcept {
+  if (empty() || s.empty()) {
+    return npos;
+  }
+  // Avoid the cost of LookupTable() for a single-character search.
+  if (s.length_ == 1) return find_first_of(s.ptr_[0], pos);
+  LookupTable tbl(s);
+  for (size_type i = pos; i < length_; ++i) {
+    if (tbl[ptr_[i]]) {
+      return i;
+    }
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_first_not_of(string_view s,
+                                                      size_type pos) const
+    noexcept {
+  if (empty()) return npos;
+  // Avoid the cost of LookupTable() for a single-character search.
+  if (s.length_ == 1) return find_first_not_of(s.ptr_[0], pos);
+  LookupTable tbl(s);
+  for (size_type i = pos; i < length_; ++i) {
+    if (!tbl[ptr_[i]]) {
+      return i;
+    }
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_first_not_of(char c,
+                                                      size_type pos) const
+    noexcept {
+  if (empty()) return npos;
+  for (; pos < length_; ++pos) {
+    if (ptr_[pos] != c) {
+      return pos;
+    }
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_last_of(string_view s,
+                                                 size_type pos) const noexcept {
+  if (empty() || s.empty()) return npos;
+  // Avoid the cost of LookupTable() for a single-character search.
+  if (s.length_ == 1) return find_last_of(s.ptr_[0], pos);
+  LookupTable tbl(s);
+  for (size_type i = std::min(pos, length_ - 1);; --i) {
+    if (tbl[ptr_[i]]) {
+      return i;
+    }
+    if (i == 0) break;
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_last_not_of(string_view s,
+                                                     size_type pos) const
+    noexcept {
+  if (empty()) return npos;
+  size_type i = std::min(pos, length_ - 1);
+  if (s.empty()) return i;
+  // Avoid the cost of LookupTable() for a single-character search.
+  if (s.length_ == 1) return find_last_not_of(s.ptr_[0], pos);
+  LookupTable tbl(s);
+  for (;; --i) {
+    if (!tbl[ptr_[i]]) {
+      return i;
+    }
+    if (i == 0) break;
+  }
+  return npos;
+}
+
+string_view::size_type string_view::find_last_not_of(char c,
+                                                     size_type pos) const
+    noexcept {
+  if (empty()) return npos;
+  size_type i = std::min(pos, length_ - 1);
+  for (;; --i) {
+    if (ptr_[i] != c) {
+      return i;
+    }
+    if (i == 0) break;
+  }
+  return npos;
+}
+
+// MSVC has non-standard behavior that implicitly creates definitions for static
+// const members. These implicit definitions conflict with explicit out-of-class
+// member definitions that are required by the C++ standard, resulting in
+// LNK1169 "multiply defined" errors at link time. __declspec(selectany) asks
+// MSVC to choose only one definition for the symbol it decorates. See details
+// at https://msdn.microsoft.com/en-us/library/34h23df8(v=vs.100).aspx
+#ifdef _MSC_VER
+#define ABSL_STRING_VIEW_SELECTANY __declspec(selectany)
+#else
+#define ABSL_STRING_VIEW_SELECTANY
+#endif
+
+ABSL_STRING_VIEW_SELECTANY
+constexpr string_view::size_type string_view::npos;
+ABSL_STRING_VIEW_SELECTANY
+constexpr string_view::size_type string_view::kMaxSize;
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_STRING_VIEW
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/string_view.h b/ChattingApp 000/Pods/abseil/absl/strings/string_view.h
new file mode 100644
index 0000000..1861ea6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/string_view.h	
@@ -0,0 +1,622 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: string_view.h
+// -----------------------------------------------------------------------------
+//
+// This file contains the definition of the `absl::string_view` class. A
+// `string_view` points to a contiguous span of characters, often part or all of
+// another `std::string`, double-quoted string literal, character array, or even
+// another `string_view`.
+//
+// This `absl::string_view` abstraction is designed to be a drop-in
+// replacement for the C++17 `std::string_view` abstraction.
+#ifndef ABSL_STRINGS_STRING_VIEW_H_
+#define ABSL_STRINGS_STRING_VIEW_H_
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <cstring>
+#include <iosfwd>
+#include <iterator>
+#include <limits>
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"
+
+#ifdef ABSL_USES_STD_STRING_VIEW
+
+#include <string_view>  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::string_view;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_STRING_VIEW
+
+#if ABSL_HAVE_BUILTIN(__builtin_memcmp) || \
+    (defined(__GNUC__) && !defined(__clang__))
+#define ABSL_INTERNAL_STRING_VIEW_MEMCMP __builtin_memcmp
+#else  // ABSL_HAVE_BUILTIN(__builtin_memcmp)
+#define ABSL_INTERNAL_STRING_VIEW_MEMCMP memcmp
+#endif  // ABSL_HAVE_BUILTIN(__builtin_memcmp)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// absl::string_view
+//
+// A `string_view` provides a lightweight view into the string data provided by
+// a `std::string`, double-quoted string literal, character array, or even
+// another `string_view`. A `string_view` does *not* own the string to which it
+// points, and that data cannot be modified through the view.
+//
+// You can use `string_view` as a function or method parameter anywhere a
+// parameter can receive a double-quoted string literal, `const char*`,
+// `std::string`, or another `absl::string_view` argument with no need to copy
+// the string data. Systematic use of `string_view` within function arguments
+// reduces data copies and `strlen()` calls.
+//
+// Because of its small size, prefer passing `string_view` by value:
+//
+//   void MyFunction(absl::string_view arg);
+//
+// If circumstances require, you may also pass one by const reference:
+//
+//   void MyFunction(const absl::string_view& arg);  // not preferred
+//
+// Passing by value generates slightly smaller code for many architectures.
+//
+// In either case, the source data of the `string_view` must outlive the
+// `string_view` itself.
+//
+// A `string_view` is also suitable for local variables if you know that the
+// lifetime of the underlying object is longer than the lifetime of your
+// `string_view` variable. However, beware of binding a `string_view` to a
+// temporary value:
+//
+//   // BAD use of string_view: lifetime problem
+//   absl::string_view sv = obj.ReturnAString();
+//
+//   // GOOD use of string_view: str outlives sv
+//   std::string str = obj.ReturnAString();
+//   absl::string_view sv = str;
+//
+// Due to lifetime issues, a `string_view` is sometimes a poor choice for a
+// return value and usually a poor choice for a data member. If you do use a
+// `string_view` this way, it is your responsibility to ensure that the object
+// pointed to by the `string_view` outlives the `string_view`.
+//
+// A `string_view` may represent a whole string or just part of a string. For
+// example, when splitting a string, `std::vector<absl::string_view>` is a
+// natural data type for the output.
+//
+// When constructed from a source which is NUL-terminated, the `string_view`
+// itself will not include the NUL-terminator unless a specific size (including
+// the NUL) is passed to the constructor. As a result, common idioms that work
+// on NUL-terminated strings do not work on `string_view` objects. If you write
+// code that scans a `string_view`, you must check its length rather than test
+// for nul, for example. Note, however, that nuls may still be embedded within
+// a `string_view` explicitly.
+//
+// You may create a null `string_view` in two ways:
+//
+//   absl::string_view sv;
+//   absl::string_view sv(nullptr, 0);
+//
+// For the above, `sv.data() == nullptr`, `sv.length() == 0`, and
+// `sv.empty() == true`. Also, if you create a `string_view` with a non-null
+// pointer then `sv.data() != nullptr`. Thus, you can use `string_view()` to
+// signal an undefined value that is different from other `string_view` values
+// in a similar fashion to how `const char* p1 = nullptr;` is different from
+// `const char* p2 = "";`. However, in practice, it is not recommended to rely
+// on this behavior.
+//
+// Be careful not to confuse a null `string_view` with an empty one. A null
+// `string_view` is an empty `string_view`, but some empty `string_view`s are
+// not null. Prefer checking for emptiness over checking for null.
+//
+// There are many ways to create an empty string_view:
+//
+//   const char* nullcp = nullptr;
+//   // string_view.size() will return 0 in all cases.
+//   absl::string_view();
+//   absl::string_view(nullcp, 0);
+//   absl::string_view("");
+//   absl::string_view("", 0);
+//   absl::string_view("abcdef", 0);
+//   absl::string_view("abcdef" + 6, 0);
+//
+// All empty `string_view` objects whether null or not, are equal:
+//
+//   absl::string_view() == absl::string_view("", 0)
+//   absl::string_view(nullptr, 0) == absl::string_view("abcdef"+6, 0)
+class string_view {
+ public:
+  using traits_type = std::char_traits<char>;
+  using value_type = char;
+  using pointer = char*;
+  using const_pointer = const char*;
+  using reference = char&;
+  using const_reference = const char&;
+  using const_iterator = const char*;
+  using iterator = const_iterator;
+  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+  using reverse_iterator = const_reverse_iterator;
+  using size_type = size_t;
+  using difference_type = std::ptrdiff_t;
+
+  static constexpr size_type npos = static_cast<size_type>(-1);
+
+  // Null `string_view` constructor
+  constexpr string_view() noexcept : ptr_(nullptr), length_(0) {}
+
+  // Implicit constructors
+
+  template <typename Allocator>
+  string_view(  // NOLINT(runtime/explicit)
+      const std::basic_string<char, std::char_traits<char>, Allocator>&
+          str) noexcept
+      // This is implemented in terms of `string_view(p, n)` so `str.size()`
+      // doesn't need to be reevaluated after `ptr_` is set.
+      : string_view(str.data(), str.size()) {}
+
+  // Implicit constructor of a `string_view` from NUL-terminated `str`. When
+  // accepting possibly null strings, use `absl::NullSafeStringView(str)`
+  // instead (see below).
+  constexpr string_view(const char* str)  // NOLINT(runtime/explicit)
+      : ptr_(str),
+        length_(str ? CheckLengthInternal(StrlenInternal(str)) : 0) {}
+
+  // Implicit constructor of a `string_view` from a `const char*` and length.
+  constexpr string_view(const char* data, size_type len)
+      : ptr_(data), length_(CheckLengthInternal(len)) {}
+
+  // NOTE: Harmlessly omitted to work around gdb bug.
+  //   constexpr string_view(const string_view&) noexcept = default;
+  //   string_view& operator=(const string_view&) noexcept = default;
+
+  // Iterators
+
+  // string_view::begin()
+  //
+  // Returns an iterator pointing to the first character at the beginning of the
+  // `string_view`, or `end()` if the `string_view` is empty.
+  constexpr const_iterator begin() const noexcept { return ptr_; }
+
+  // string_view::end()
+  //
+  // Returns an iterator pointing just beyond the last character at the end of
+  // the `string_view`. This iterator acts as a placeholder; attempting to
+  // access it results in undefined behavior.
+  constexpr const_iterator end() const noexcept { return ptr_ + length_; }
+
+  // string_view::cbegin()
+  //
+  // Returns a const iterator pointing to the first character at the beginning
+  // of the `string_view`, or `end()` if the `string_view` is empty.
+  constexpr const_iterator cbegin() const noexcept { return begin(); }
+
+  // string_view::cend()
+  //
+  // Returns a const iterator pointing just beyond the last character at the end
+  // of the `string_view`. This pointer acts as a placeholder; attempting to
+  // access its element results in undefined behavior.
+  constexpr const_iterator cend() const noexcept { return end(); }
+
+  // string_view::rbegin()
+  //
+  // Returns a reverse iterator pointing to the last character at the end of the
+  // `string_view`, or `rend()` if the `string_view` is empty.
+  const_reverse_iterator rbegin() const noexcept {
+    return const_reverse_iterator(end());
+  }
+
+  // string_view::rend()
+  //
+  // Returns a reverse iterator pointing just before the first character at the
+  // beginning of the `string_view`. This pointer acts as a placeholder;
+  // attempting to access its element results in undefined behavior.
+  const_reverse_iterator rend() const noexcept {
+    return const_reverse_iterator(begin());
+  }
+
+  // string_view::crbegin()
+  //
+  // Returns a const reverse iterator pointing to the last character at the end
+  // of the `string_view`, or `crend()` if the `string_view` is empty.
+  const_reverse_iterator crbegin() const noexcept { return rbegin(); }
+
+  // string_view::crend()
+  //
+  // Returns a const reverse iterator pointing just before the first character
+  // at the beginning of the `string_view`. This pointer acts as a placeholder;
+  // attempting to access its element results in undefined behavior.
+  const_reverse_iterator crend() const noexcept { return rend(); }
+
+  // Capacity Utilities
+
+  // string_view::size()
+  //
+  // Returns the number of characters in the `string_view`.
+  constexpr size_type size() const noexcept {
+    return length_;
+  }
+
+  // string_view::length()
+  //
+  // Returns the number of characters in the `string_view`. Alias for `size()`.
+  constexpr size_type length() const noexcept { return size(); }
+
+  // string_view::max_size()
+  //
+  // Returns the maximum number of characters the `string_view` can hold.
+  constexpr size_type max_size() const noexcept { return kMaxSize; }
+
+  // string_view::empty()
+  //
+  // Checks if the `string_view` is empty (refers to no characters).
+  constexpr bool empty() const noexcept { return length_ == 0; }
+
+  // string_view::operator[]
+  //
+  // Returns the ith element of the `string_view` using the array operator.
+  // Note that this operator does not perform any bounds checking.
+  constexpr const_reference operator[](size_type i) const {
+    return ABSL_ASSERT(i < size()), ptr_[i];
+  }
+
+  // string_view::at()
+  //
+  // Returns the ith element of the `string_view`. Bounds checking is performed,
+  // and an exception of type `std::out_of_range` will be thrown on invalid
+  // access.
+  constexpr const_reference at(size_type i) const {
+    return ABSL_PREDICT_TRUE(i < size())
+               ? ptr_[i]
+               : ((void)base_internal::ThrowStdOutOfRange(
+                      "absl::string_view::at"),
+                  ptr_[i]);
+  }
+
+  // string_view::front()
+  //
+  // Returns the first element of a `string_view`.
+  constexpr const_reference front() const {
+    return ABSL_ASSERT(!empty()), ptr_[0];
+  }
+
+  // string_view::back()
+  //
+  // Returns the last element of a `string_view`.
+  constexpr const_reference back() const {
+    return ABSL_ASSERT(!empty()), ptr_[size() - 1];
+  }
+
+  // string_view::data()
+  //
+  // Returns a pointer to the underlying character array (which is of course
+  // stored elsewhere). Note that `string_view::data()` may contain embedded nul
+  // characters, but the returned buffer may or may not be NUL-terminated;
+  // therefore, do not pass `data()` to a routine that expects a NUL-terminated
+  // std::string.
+  constexpr const_pointer data() const noexcept { return ptr_; }
+
+  // Modifiers
+
+  // string_view::remove_prefix()
+  //
+  // Removes the first `n` characters from the `string_view`. Note that the
+  // underlying std::string is not changed, only the view.
+  void remove_prefix(size_type n) {
+    assert(n <= length_);
+    ptr_ += n;
+    length_ -= n;
+  }
+
+  // string_view::remove_suffix()
+  //
+  // Removes the last `n` characters from the `string_view`. Note that the
+  // underlying std::string is not changed, only the view.
+  void remove_suffix(size_type n) {
+    assert(n <= length_);
+    length_ -= n;
+  }
+
+  // string_view::swap()
+  //
+  // Swaps this `string_view` with another `string_view`.
+  void swap(string_view& s) noexcept {
+    auto t = *this;
+    *this = s;
+    s = t;
+  }
+
+  // Explicit conversion operators
+
+  // Converts to `std::basic_string`.
+  template <typename A>
+  explicit operator std::basic_string<char, traits_type, A>() const {
+    if (!data()) return {};
+    return std::basic_string<char, traits_type, A>(data(), size());
+  }
+
+  // string_view::copy()
+  //
+  // Copies the contents of the `string_view` at offset `pos` and length `n`
+  // into `buf`.
+  size_type copy(char* buf, size_type n, size_type pos = 0) const {
+    if (ABSL_PREDICT_FALSE(pos > length_)) {
+      base_internal::ThrowStdOutOfRange("absl::string_view::copy");
+    }
+    size_type rlen = (std::min)(length_ - pos, n);
+    if (rlen > 0) {
+      const char* start = ptr_ + pos;
+      traits_type::copy(buf, start, rlen);
+    }
+    return rlen;
+  }
+
+  // string_view::substr()
+  //
+  // Returns a "substring" of the `string_view` (at offset `pos` and length
+  // `n`) as another string_view. This function throws `std::out_of_bounds` if
+  // `pos > size`.
+  string_view substr(size_type pos, size_type n = npos) const {
+    if (ABSL_PREDICT_FALSE(pos > length_))
+      base_internal::ThrowStdOutOfRange("absl::string_view::substr");
+    n = (std::min)(n, length_ - pos);
+    return string_view(ptr_ + pos, n);
+  }
+
+  // string_view::compare()
+  //
+  // Performs a lexicographical comparison between the `string_view` and
+  // another `absl::string_view`, returning -1 if `this` is less than, 0 if
+  // `this` is equal to, and 1 if `this` is greater than the passed std::string
+  // view. Note that in the case of data equality, a further comparison is made
+  // on the respective sizes of the two `string_view`s to determine which is
+  // smaller, equal, or greater.
+  constexpr int compare(string_view x) const noexcept {
+    return CompareImpl(length_, x.length_,
+                       Min(length_, x.length_) == 0
+                           ? 0
+                           : ABSL_INTERNAL_STRING_VIEW_MEMCMP(
+                                 ptr_, x.ptr_, Min(length_, x.length_)));
+  }
+
+  // Overload of `string_view::compare()` for comparing a substring of the
+  // 'string_view` and another `absl::string_view`.
+  int compare(size_type pos1, size_type count1, string_view v) const {
+    return substr(pos1, count1).compare(v);
+  }
+
+  // Overload of `string_view::compare()` for comparing a substring of the
+  // `string_view` and a substring of another `absl::string_view`.
+  int compare(size_type pos1, size_type count1, string_view v, size_type pos2,
+              size_type count2) const {
+    return substr(pos1, count1).compare(v.substr(pos2, count2));
+  }
+
+  // Overload of `string_view::compare()` for comparing a `string_view` and a
+  // a different  C-style std::string `s`.
+  int compare(const char* s) const { return compare(string_view(s)); }
+
+  // Overload of `string_view::compare()` for comparing a substring of the
+  // `string_view` and a different std::string C-style std::string `s`.
+  int compare(size_type pos1, size_type count1, const char* s) const {
+    return substr(pos1, count1).compare(string_view(s));
+  }
+
+  // Overload of `string_view::compare()` for comparing a substring of the
+  // `string_view` and a substring of a different C-style std::string `s`.
+  int compare(size_type pos1, size_type count1, const char* s,
+              size_type count2) const {
+    return substr(pos1, count1).compare(string_view(s, count2));
+  }
+
+  // Find Utilities
+
+  // string_view::find()
+  //
+  // Finds the first occurrence of the substring `s` within the `string_view`,
+  // returning the position of the first character's match, or `npos` if no
+  // match was found.
+  size_type find(string_view s, size_type pos = 0) const noexcept;
+
+  // Overload of `string_view::find()` for finding the given character `c`
+  // within the `string_view`.
+  size_type find(char c, size_type pos = 0) const noexcept;
+
+  // string_view::rfind()
+  //
+  // Finds the last occurrence of a substring `s` within the `string_view`,
+  // returning the position of the first character's match, or `npos` if no
+  // match was found.
+  size_type rfind(string_view s, size_type pos = npos) const
+      noexcept;
+
+  // Overload of `string_view::rfind()` for finding the last given character `c`
+  // within the `string_view`.
+  size_type rfind(char c, size_type pos = npos) const noexcept;
+
+  // string_view::find_first_of()
+  //
+  // Finds the first occurrence of any of the characters in `s` within the
+  // `string_view`, returning the start position of the match, or `npos` if no
+  // match was found.
+  size_type find_first_of(string_view s, size_type pos = 0) const
+      noexcept;
+
+  // Overload of `string_view::find_first_of()` for finding a character `c`
+  // within the `string_view`.
+  size_type find_first_of(char c, size_type pos = 0) const
+      noexcept {
+    return find(c, pos);
+  }
+
+  // string_view::find_last_of()
+  //
+  // Finds the last occurrence of any of the characters in `s` within the
+  // `string_view`, returning the start position of the match, or `npos` if no
+  // match was found.
+  size_type find_last_of(string_view s, size_type pos = npos) const
+      noexcept;
+
+  // Overload of `string_view::find_last_of()` for finding a character `c`
+  // within the `string_view`.
+  size_type find_last_of(char c, size_type pos = npos) const
+      noexcept {
+    return rfind(c, pos);
+  }
+
+  // string_view::find_first_not_of()
+  //
+  // Finds the first occurrence of any of the characters not in `s` within the
+  // `string_view`, returning the start position of the first non-match, or
+  // `npos` if no non-match was found.
+  size_type find_first_not_of(string_view s, size_type pos = 0) const noexcept;
+
+  // Overload of `string_view::find_first_not_of()` for finding a character
+  // that is not `c` within the `string_view`.
+  size_type find_first_not_of(char c, size_type pos = 0) const noexcept;
+
+  // string_view::find_last_not_of()
+  //
+  // Finds the last occurrence of any of the characters not in `s` within the
+  // `string_view`, returning the start position of the last non-match, or
+  // `npos` if no non-match was found.
+  size_type find_last_not_of(string_view s,
+                                          size_type pos = npos) const noexcept;
+
+  // Overload of `string_view::find_last_not_of()` for finding a character
+  // that is not `c` within the `string_view`.
+  size_type find_last_not_of(char c, size_type pos = npos) const
+      noexcept;
+
+ private:
+  static constexpr size_type kMaxSize =
+      (std::numeric_limits<difference_type>::max)();
+
+  static constexpr size_type CheckLengthInternal(size_type len) {
+    return (void)ABSL_ASSERT(len <= kMaxSize), len;
+  }
+
+  static constexpr size_type StrlenInternal(const char* str) {
+#if defined(_MSC_VER) && _MSC_VER >= 1910 && !defined(__clang__)
+    // MSVC 2017+ can evaluate this at compile-time.
+    const char* begin = str;
+    while (*str != '\0') ++str;
+    return str - begin;
+#elif ABSL_HAVE_BUILTIN(__builtin_strlen) || \
+    (defined(__GNUC__) && !defined(__clang__))
+    // GCC has __builtin_strlen according to
+    // https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Other-Builtins.html, but
+    // ABSL_HAVE_BUILTIN doesn't detect that, so we use the extra checks above.
+    // __builtin_strlen is constexpr.
+    return __builtin_strlen(str);
+#else
+    return str ? strlen(str) : 0;
+#endif
+  }
+
+  static constexpr size_t Min(size_type length_a, size_type length_b) {
+    return length_a < length_b ? length_a : length_b;
+  }
+
+  static constexpr int CompareImpl(size_type length_a, size_type length_b,
+                                   int compare_result) {
+    return compare_result == 0 ? static_cast<int>(length_a > length_b) -
+                                     static_cast<int>(length_a < length_b)
+                               : (compare_result < 0 ? -1 : 1);
+  }
+
+  const char* ptr_;
+  size_type length_;
+};
+
+// This large function is defined inline so that in a fairly common case where
+// one of the arguments is a literal, the compiler can elide a lot of the
+// following comparisons.
+constexpr bool operator==(string_view x, string_view y) noexcept {
+  return x.size() == y.size() &&
+         (x.empty() ||
+          ABSL_INTERNAL_STRING_VIEW_MEMCMP(x.data(), y.data(), x.size()) == 0);
+}
+
+constexpr bool operator!=(string_view x, string_view y) noexcept {
+  return !(x == y);
+}
+
+constexpr bool operator<(string_view x, string_view y) noexcept {
+  return x.compare(y) < 0;
+}
+
+constexpr bool operator>(string_view x, string_view y) noexcept {
+  return y < x;
+}
+
+constexpr bool operator<=(string_view x, string_view y) noexcept {
+  return !(y < x);
+}
+
+constexpr bool operator>=(string_view x, string_view y) noexcept {
+  return !(x < y);
+}
+
+// IO Insertion Operator
+std::ostream& operator<<(std::ostream& o, string_view piece);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef ABSL_INTERNAL_STRING_VIEW_MEMCMP
+
+#endif  // ABSL_USES_STD_STRING_VIEW
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// ClippedSubstr()
+//
+// Like `s.substr(pos, n)`, but clips `pos` to an upper bound of `s.size()`.
+// Provided because std::string_view::substr throws if `pos > size()`
+inline string_view ClippedSubstr(string_view s, size_t pos,
+                                 size_t n = string_view::npos) {
+  pos = (std::min)(pos, static_cast<size_t>(s.size()));
+  return s.substr(pos, n);
+}
+
+// NullSafeStringView()
+//
+// Creates an `absl::string_view` from a pointer `p` even if it's null-valued.
+// This function should be used where an `absl::string_view` can be created from
+// a possibly-null pointer.
+constexpr string_view NullSafeStringView(const char* p) {
+  return p ? string_view(p) : string_view();
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STRING_VIEW_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/strip.h b/ChattingApp 000/Pods/abseil/absl/strings/strip.h
new file mode 100644
index 0000000..111872c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/strip.h	
@@ -0,0 +1,91 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: strip.h
+// -----------------------------------------------------------------------------
+//
+// This file contains various functions for stripping substrings from a string.
+#ifndef ABSL_STRINGS_STRIP_H_
+#define ABSL_STRINGS_STRIP_H_
+
+#include <cstddef>
+#include <string>
+
+#include "absl/base/macros.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/match.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// ConsumePrefix()
+//
+// Strips the `expected` prefix from the start of the given string, returning
+// `true` if the strip operation succeeded or false otherwise.
+//
+// Example:
+//
+//   absl::string_view input("abc");
+//   EXPECT_TRUE(absl::ConsumePrefix(&input, "a"));
+//   EXPECT_EQ(input, "bc");
+inline bool ConsumePrefix(absl::string_view* str, absl::string_view expected) {
+  if (!absl::StartsWith(*str, expected)) return false;
+  str->remove_prefix(expected.size());
+  return true;
+}
+// ConsumeSuffix()
+//
+// Strips the `expected` suffix from the end of the given string, returning
+// `true` if the strip operation succeeded or false otherwise.
+//
+// Example:
+//
+//   absl::string_view input("abcdef");
+//   EXPECT_TRUE(absl::ConsumeSuffix(&input, "def"));
+//   EXPECT_EQ(input, "abc");
+inline bool ConsumeSuffix(absl::string_view* str, absl::string_view expected) {
+  if (!absl::EndsWith(*str, expected)) return false;
+  str->remove_suffix(expected.size());
+  return true;
+}
+
+// StripPrefix()
+//
+// Returns a view into the input string 'str' with the given 'prefix' removed,
+// but leaving the original string intact. If the prefix does not match at the
+// start of the string, returns the original string instead.
+ABSL_MUST_USE_RESULT inline absl::string_view StripPrefix(
+    absl::string_view str, absl::string_view prefix) {
+  if (absl::StartsWith(str, prefix)) str.remove_prefix(prefix.size());
+  return str;
+}
+
+// StripSuffix()
+//
+// Returns a view into the input string 'str' with the given 'suffix' removed,
+// but leaving the original string intact. If the suffix does not match at the
+// end of the string, returns the original string instead.
+ABSL_MUST_USE_RESULT inline absl::string_view StripSuffix(
+    absl::string_view str, absl::string_view suffix) {
+  if (absl::EndsWith(str, suffix)) str.remove_suffix(suffix.size());
+  return str;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_STRIP_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/substitute.cc b/ChattingApp 000/Pods/abseil/absl/strings/substitute.cc
new file mode 100644
index 0000000..5b69a3e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/substitute.cc	
@@ -0,0 +1,171 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/substitute.h"
+
+#include <algorithm>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/internal/resize_uninitialized.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace substitute_internal {
+
+void SubstituteAndAppendArray(std::string* output, absl::string_view format,
+                              const absl::string_view* args_array,
+                              size_t num_args) {
+  // Determine total size needed.
+  size_t size = 0;
+  for (size_t i = 0; i < format.size(); i++) {
+    if (format[i] == '$') {
+      if (i + 1 >= format.size()) {
+#ifndef NDEBUG
+        ABSL_RAW_LOG(FATAL,
+                     "Invalid absl::Substitute() format std::string: \"%s\".",
+                     absl::CEscape(format).c_str());
+#endif
+        return;
+      } else if (absl::ascii_isdigit(format[i + 1])) {
+        int index = format[i + 1] - '0';
+        if (static_cast<size_t>(index) >= num_args) {
+#ifndef NDEBUG
+          ABSL_RAW_LOG(
+              FATAL,
+              "Invalid absl::Substitute() format std::string: asked for \"$"
+              "%d\", but only %d args were given.  Full format std::string was: "
+              "\"%s\".",
+              index, static_cast<int>(num_args), absl::CEscape(format).c_str());
+#endif
+          return;
+        }
+        size += args_array[index].size();
+        ++i;  // Skip next char.
+      } else if (format[i + 1] == '$') {
+        ++size;
+        ++i;  // Skip next char.
+      } else {
+#ifndef NDEBUG
+        ABSL_RAW_LOG(FATAL,
+                     "Invalid absl::Substitute() format std::string: \"%s\".",
+                     absl::CEscape(format).c_str());
+#endif
+        return;
+      }
+    } else {
+      ++size;
+    }
+  }
+
+  if (size == 0) return;
+
+  // Build the std::string.
+  size_t original_size = output->size();
+  strings_internal::STLStringResizeUninitialized(output, original_size + size);
+  char* target = &(*output)[original_size];
+  for (size_t i = 0; i < format.size(); i++) {
+    if (format[i] == '$') {
+      if (absl::ascii_isdigit(format[i + 1])) {
+        const absl::string_view src = args_array[format[i + 1] - '0'];
+        target = std::copy(src.begin(), src.end(), target);
+        ++i;  // Skip next char.
+      } else if (format[i + 1] == '$') {
+        *target++ = '$';
+        ++i;  // Skip next char.
+      }
+    } else {
+      *target++ = format[i];
+    }
+  }
+
+  assert(target == output->data() + output->size());
+}
+
+Arg::Arg(const void* value) {
+  static_assert(sizeof(scratch_) >= sizeof(value) * 2 + 2,
+                "fix sizeof(scratch_)");
+  if (value == nullptr) {
+    piece_ = "NULL";
+  } else {
+    char* ptr = scratch_ + sizeof(scratch_);
+    uintptr_t num = reinterpret_cast<uintptr_t>(value);
+    do {
+      *--ptr = absl::numbers_internal::kHexChar[num & 0xf];
+      num >>= 4;
+    } while (num != 0);
+    *--ptr = 'x';
+    *--ptr = '0';
+    piece_ = absl::string_view(ptr, scratch_ + sizeof(scratch_) - ptr);
+  }
+}
+
+// TODO(jorg): Don't duplicate so much code between here and str_cat.cc
+Arg::Arg(Hex hex) {
+  char* const end = &scratch_[numbers_internal::kFastToBufferSize];
+  char* writer = end;
+  uint64_t value = hex.value;
+  do {
+    *--writer = absl::numbers_internal::kHexChar[value & 0xF];
+    value >>= 4;
+  } while (value != 0);
+
+  char* beg;
+  if (end - writer < hex.width) {
+    beg = end - hex.width;
+    std::fill_n(beg, writer - beg, hex.fill);
+  } else {
+    beg = writer;
+  }
+
+  piece_ = absl::string_view(beg, end - beg);
+}
+
+// TODO(jorg): Don't duplicate so much code between here and str_cat.cc
+Arg::Arg(Dec dec) {
+  assert(dec.width <= numbers_internal::kFastToBufferSize);
+  char* const end = &scratch_[numbers_internal::kFastToBufferSize];
+  char* const minfill = end - dec.width;
+  char* writer = end;
+  uint64_t value = dec.value;
+  bool neg = dec.neg;
+  while (value > 9) {
+    *--writer = '0' + (value % 10);
+    value /= 10;
+  }
+  *--writer = '0' + value;
+  if (neg) *--writer = '-';
+
+  ptrdiff_t fillers = writer - minfill;
+  if (fillers > 0) {
+    // Tricky: if the fill character is ' ', then it's <fill><+/-><digits>
+    // But...: if the fill character is '0', then it's <+/-><fill><digits>
+    bool add_sign_again = false;
+    if (neg && dec.fill == '0') {  // If filling with '0',
+      ++writer;                    // ignore the sign we just added
+      add_sign_again = true;       // and re-add the sign later.
+    }
+    writer -= fillers;
+    std::fill_n(writer, fillers, dec.fill);
+    if (add_sign_again) *--writer = '-';
+  }
+
+  piece_ = absl::string_view(writer, end - writer);
+}
+
+}  // namespace substitute_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/strings/substitute.h b/ChattingApp 000/Pods/abseil/absl/strings/substitute.h
new file mode 100644
index 0000000..4d0984d
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/strings/substitute.h	
@@ -0,0 +1,693 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: substitute.h
+// -----------------------------------------------------------------------------
+//
+// This package contains functions for efficiently performing string
+// substitutions using a format string with positional notation:
+// `Substitute()` and `SubstituteAndAppend()`.
+//
+// Unlike printf-style format specifiers, `Substitute()` functions do not need
+// to specify the type of the substitution arguments. Supported arguments
+// following the format string, such as strings, string_views, ints,
+// floats, and bools, are automatically converted to strings during the
+// substitution process. (See below for a full list of supported types.)
+//
+// `Substitute()` does not allow you to specify *how* to format a value, beyond
+// the default conversion to string. For example, you cannot format an integer
+// in hex.
+//
+// The format string uses positional identifiers indicated by a dollar sign ($)
+// and single digit positional ids to indicate which substitution arguments to
+// use at that location within the format string.
+//
+// A '$$' sequence in the format string causes a literal '$' character to be
+// output.
+//
+// Example 1:
+//   std::string s = Substitute("$1 purchased $0 $2 for $$10. Thanks $1!",
+//                              5, "Bob", "Apples");
+//   EXPECT_EQ("Bob purchased 5 Apples for $10. Thanks Bob!", s);
+//
+// Example 2:
+//   std::string s = "Hi. ";
+//   SubstituteAndAppend(&s, "My name is $0 and I am $1 years old.", "Bob", 5);
+//   EXPECT_EQ("Hi. My name is Bob and I am 5 years old.", s);
+//
+// Supported types:
+//   * absl::string_view, std::string, const char* (null is equivalent to "")
+//   * int32_t, int64_t, uint32_t, uint64
+//   * float, double
+//   * bool (Printed as "true" or "false")
+//   * pointer types other than char* (Printed as "0x<lower case hex string>",
+//     except that null is printed as "NULL")
+//
+// If an invalid format string is provided, Substitute returns an empty string
+// and SubstituteAndAppend does not change the provided output string.
+// A format string is invalid if it:
+//   * ends in an unescaped $ character,
+//     e.g. "Hello $", or
+//   * calls for a position argument which is not provided,
+//     e.g. Substitute("Hello $2", "world"), or
+//   * specifies a non-digit, non-$ character after an unescaped $ character,
+//     e.g. "Hello $f".
+// In debug mode, i.e. #ifndef NDEBUG, such errors terminate the program.
+
+#ifndef ABSL_STRINGS_SUBSTITUTE_H_
+#define ABSL_STRINGS_SUBSTITUTE_H_
+
+#include <cstring>
+#include <string>
+#include <type_traits>
+#include <vector>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/strings/ascii.h"
+#include "absl/strings/escaping.h"
+#include "absl/strings/numbers.h"
+#include "absl/strings/str_cat.h"
+#include "absl/strings/str_split.h"
+#include "absl/strings/string_view.h"
+#include "absl/strings/strip.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace substitute_internal {
+
+// Arg
+//
+// This class provides an argument type for `absl::Substitute()` and
+// `absl::SubstituteAndAppend()`. `Arg` handles implicit conversion of various
+// types to a string. (`Arg` is very similar to the `AlphaNum` class in
+// `StrCat()`.)
+//
+// This class has implicit constructors.
+class Arg {
+ public:
+  // Overloads for std::string-y things
+  //
+  // Explicitly overload `const char*` so the compiler doesn't cast to `bool`.
+  Arg(const char* value)  // NOLINT(runtime/explicit)
+      : piece_(absl::NullSafeStringView(value)) {}
+  template <typename Allocator>
+  Arg(  // NOLINT
+      const std::basic_string<char, std::char_traits<char>, Allocator>&
+          value) noexcept
+      : piece_(value) {}
+  Arg(absl::string_view value)  // NOLINT(runtime/explicit)
+      : piece_(value) {}
+
+  // Overloads for primitives
+  //
+  // No overloads are available for signed and unsigned char because if people
+  // are explicitly declaring their chars as signed or unsigned then they are
+  // probably using them as 8-bit integers and would probably prefer an integer
+  // representation. However, we can't really know, so we make the caller decide
+  // what to do.
+  Arg(char value)  // NOLINT(runtime/explicit)
+      : piece_(scratch_, 1) { scratch_[0] = value; }
+  Arg(short value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(unsigned short value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(int value)  // NOLINT(runtime/explicit)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(unsigned int value)  // NOLINT(runtime/explicit)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(long value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(unsigned long value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(long long value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(unsigned long long value)  // NOLINT(*)
+      : piece_(scratch_,
+               numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
+  Arg(float value)  // NOLINT(runtime/explicit)
+      : piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) {
+  }
+  Arg(double value)  // NOLINT(runtime/explicit)
+      : piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) {
+  }
+  Arg(bool value)  // NOLINT(runtime/explicit)
+      : piece_(value ? "true" : "false") {}
+
+  Arg(Hex hex);  // NOLINT(runtime/explicit)
+  Arg(Dec dec);  // NOLINT(runtime/explicit)
+
+  // vector<bool>::reference and const_reference require special help to
+  // convert to `AlphaNum` because it requires two user defined conversions.
+  template <typename T,
+            absl::enable_if_t<
+                std::is_class<T>::value &&
+                (std::is_same<T, std::vector<bool>::reference>::value ||
+                 std::is_same<T, std::vector<bool>::const_reference>::value)>* =
+                nullptr>
+  Arg(T value)  // NOLINT(google-explicit-constructor)
+      : Arg(static_cast<bool>(value)) {}
+
+  // `void*` values, with the exception of `char*`, are printed as
+  // "0x<hex value>". However, in the case of `nullptr`, "NULL" is printed.
+  Arg(const void* value);  // NOLINT(runtime/explicit)
+
+  Arg(const Arg&) = delete;
+  Arg& operator=(const Arg&) = delete;
+
+  absl::string_view piece() const { return piece_; }
+
+ private:
+  absl::string_view piece_;
+  char scratch_[numbers_internal::kFastToBufferSize];
+};
+
+// Internal helper function. Don't call this from outside this implementation.
+// This interface may change without notice.
+void SubstituteAndAppendArray(std::string* output, absl::string_view format,
+                              const absl::string_view* args_array,
+                              size_t num_args);
+
+#if defined(ABSL_BAD_CALL_IF)
+constexpr int CalculateOneBit(const char* format) {
+  // Returns:
+  // * 2^N for '$N' when N is in [0-9]
+  // * 0 for correct '$' escaping: '$$'.
+  // * -1 otherwise.
+  return (*format < '0' || *format > '9') ? (*format == '$' ? 0 : -1)
+                                          : (1 << (*format - '0'));
+}
+
+constexpr const char* SkipNumber(const char* format) {
+  return !*format ? format : (format + 1);
+}
+
+constexpr int PlaceholderBitmask(const char* format) {
+  return !*format ? 0 : *format != '$'
+                             ? PlaceholderBitmask(format + 1)
+                             : (CalculateOneBit(format + 1) |
+                                   PlaceholderBitmask(SkipNumber(format + 1)));
+}
+#endif  // ABSL_BAD_CALL_IF
+
+}  // namespace substitute_internal
+
+//
+// PUBLIC API
+//
+
+// SubstituteAndAppend()
+//
+// Substitutes variables into a given format string and appends to a given
+// output string. See file comments above for usage.
+//
+// The declarations of `SubstituteAndAppend()` below consist of overloads
+// for passing 0 to 10 arguments, respectively.
+//
+// NOTE: A zero-argument `SubstituteAndAppend()` may be used within variadic
+// templates to allow a variable number of arguments.
+//
+// Example:
+//  template <typename... Args>
+//  void VarMsg(std::string* boilerplate, absl::string_view format,
+//      const Args&... args) {
+//    absl::SubstituteAndAppend(boilerplate, format, args...);
+//  }
+//
+inline void SubstituteAndAppend(std::string* output, absl::string_view format) {
+  substitute_internal::SubstituteAndAppendArray(output, format, nullptr, 0);
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0) {
+  const absl::string_view args[] = {a0.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1) {
+  const absl::string_view args[] = {a0.piece(), a1.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1,
+                                const substitute_internal::Arg& a2) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1,
+                                const substitute_internal::Arg& a2,
+                                const substitute_internal::Arg& a3) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1,
+                                const substitute_internal::Arg& a2,
+                                const substitute_internal::Arg& a3,
+                                const substitute_internal::Arg& a4) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece(), a4.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1,
+                                const substitute_internal::Arg& a2,
+                                const substitute_internal::Arg& a3,
+                                const substitute_internal::Arg& a4,
+                                const substitute_internal::Arg& a5) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece(), a4.piece(), a5.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(std::string* output, absl::string_view format,
+                                const substitute_internal::Arg& a0,
+                                const substitute_internal::Arg& a1,
+                                const substitute_internal::Arg& a2,
+                                const substitute_internal::Arg& a3,
+                                const substitute_internal::Arg& a4,
+                                const substitute_internal::Arg& a5,
+                                const substitute_internal::Arg& a6) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece(), a4.piece(), a5.piece(),
+                                    a6.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(
+    std::string* output, absl::string_view format,
+    const substitute_internal::Arg& a0, const substitute_internal::Arg& a1,
+    const substitute_internal::Arg& a2, const substitute_internal::Arg& a3,
+    const substitute_internal::Arg& a4, const substitute_internal::Arg& a5,
+    const substitute_internal::Arg& a6, const substitute_internal::Arg& a7) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece(), a4.piece(), a5.piece(),
+                                    a6.piece(), a7.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(
+    std::string* output, absl::string_view format,
+    const substitute_internal::Arg& a0, const substitute_internal::Arg& a1,
+    const substitute_internal::Arg& a2, const substitute_internal::Arg& a3,
+    const substitute_internal::Arg& a4, const substitute_internal::Arg& a5,
+    const substitute_internal::Arg& a6, const substitute_internal::Arg& a7,
+    const substitute_internal::Arg& a8) {
+  const absl::string_view args[] = {a0.piece(), a1.piece(), a2.piece(),
+                                    a3.piece(), a4.piece(), a5.piece(),
+                                    a6.piece(), a7.piece(), a8.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+inline void SubstituteAndAppend(
+    std::string* output, absl::string_view format,
+    const substitute_internal::Arg& a0, const substitute_internal::Arg& a1,
+    const substitute_internal::Arg& a2, const substitute_internal::Arg& a3,
+    const substitute_internal::Arg& a4, const substitute_internal::Arg& a5,
+    const substitute_internal::Arg& a6, const substitute_internal::Arg& a7,
+    const substitute_internal::Arg& a8, const substitute_internal::Arg& a9) {
+  const absl::string_view args[] = {
+      a0.piece(), a1.piece(), a2.piece(), a3.piece(), a4.piece(),
+      a5.piece(), a6.piece(), a7.piece(), a8.piece(), a9.piece()};
+  substitute_internal::SubstituteAndAppendArray(output, format, args,
+                                                ABSL_ARRAYSIZE(args));
+}
+
+#if defined(ABSL_BAD_CALL_IF)
+// This body of functions catches cases where the number of placeholders
+// doesn't match the number of data arguments.
+void SubstituteAndAppend(std::string* output, const char* format)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 0,
+                     "There were no substitution arguments "
+                     "but this format std::string has a $[0-9] in it");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1,
+                     "There was 1 substitution argument given, but "
+                     "this format std::string is either missing its $0, or "
+                     "contains one of $1-$9");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0,
+                         const substitute_internal::Arg& a1)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 3,
+                     "There were 2 substitution arguments given, but "
+                     "this format std::string is either missing its $0/$1, or "
+                     "contains one of $2-$9");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0,
+                         const substitute_internal::Arg& a1,
+                         const substitute_internal::Arg& a2)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 7,
+                     "There were 3 substitution arguments given, but "
+                     "this format std::string is either missing its $0/$1/$2, or "
+                     "contains one of $3-$9");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0,
+                         const substitute_internal::Arg& a1,
+                         const substitute_internal::Arg& a2,
+                         const substitute_internal::Arg& a3)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 15,
+                     "There were 4 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$3, or "
+                     "contains one of $4-$9");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0,
+                         const substitute_internal::Arg& a1,
+                         const substitute_internal::Arg& a2,
+                         const substitute_internal::Arg& a3,
+                         const substitute_internal::Arg& a4)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 31,
+                     "There were 5 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$4, or "
+                     "contains one of $5-$9");
+
+void SubstituteAndAppend(std::string* output, const char* format,
+                         const substitute_internal::Arg& a0,
+                         const substitute_internal::Arg& a1,
+                         const substitute_internal::Arg& a2,
+                         const substitute_internal::Arg& a3,
+                         const substitute_internal::Arg& a4,
+                         const substitute_internal::Arg& a5)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 63,
+                     "There were 6 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$5, or "
+                     "contains one of $6-$9");
+
+void SubstituteAndAppend(
+    std::string* output, const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 127,
+                     "There were 7 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$6, or "
+                     "contains one of $7-$9");
+
+void SubstituteAndAppend(
+    std::string* output, const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 255,
+                     "There were 8 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$7, or "
+                     "contains one of $8-$9");
+
+void SubstituteAndAppend(
+    std::string* output, const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8)
+    ABSL_BAD_CALL_IF(
+        substitute_internal::PlaceholderBitmask(format) != 511,
+        "There were 9 substitution arguments given, but "
+        "this format std::string is either missing its $0-$8, or contains a $9");
+
+void SubstituteAndAppend(
+    std::string* output, const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8,
+    const substitute_internal::Arg& a9)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1023,
+                     "There were 10 substitution arguments given, but this "
+                     "format std::string doesn't contain all of $0 through $9");
+#endif  // ABSL_BAD_CALL_IF
+
+// Substitute()
+//
+// Substitutes variables into a given format string. See file comments above
+// for usage.
+//
+// The declarations of `Substitute()` below consist of overloads for passing 0
+// to 10 arguments, respectively.
+//
+// NOTE: A zero-argument `Substitute()` may be used within variadic templates to
+// allow a variable number of arguments.
+//
+// Example:
+//  template <typename... Args>
+//  void VarMsg(absl::string_view format, const Args&... args) {
+//    std::string s = absl::Substitute(format, args...);
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(absl::string_view format) {
+  std::string result;
+  SubstituteAndAppend(&result, format);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7, a8);
+  return result;
+}
+
+ABSL_MUST_USE_RESULT inline std::string Substitute(
+    absl::string_view format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8,
+    const substitute_internal::Arg& a9) {
+  std::string result;
+  SubstituteAndAppend(&result, format, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
+  return result;
+}
+
+#if defined(ABSL_BAD_CALL_IF)
+// This body of functions catches cases where the number of placeholders
+// doesn't match the number of data arguments.
+std::string Substitute(const char* format)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 0,
+                     "There were no substitution arguments "
+                     "but this format std::string has a $[0-9] in it");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1,
+                     "There was 1 substitution argument given, but "
+                     "this format std::string is either missing its $0, or "
+                     "contains one of $1-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 3,
+                     "There were 2 substitution arguments given, but "
+                     "this format std::string is either missing its $0/$1, or "
+                     "contains one of $2-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 7,
+                     "There were 3 substitution arguments given, but "
+                     "this format std::string is either missing its $0/$1/$2, or "
+                     "contains one of $3-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2,
+                       const substitute_internal::Arg& a3)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 15,
+                     "There were 4 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$3, or "
+                     "contains one of $4-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2,
+                       const substitute_internal::Arg& a3,
+                       const substitute_internal::Arg& a4)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 31,
+                     "There were 5 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$4, or "
+                     "contains one of $5-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2,
+                       const substitute_internal::Arg& a3,
+                       const substitute_internal::Arg& a4,
+                       const substitute_internal::Arg& a5)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 63,
+                     "There were 6 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$5, or "
+                     "contains one of $6-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2,
+                       const substitute_internal::Arg& a3,
+                       const substitute_internal::Arg& a4,
+                       const substitute_internal::Arg& a5,
+                       const substitute_internal::Arg& a6)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 127,
+                     "There were 7 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$6, or "
+                     "contains one of $7-$9");
+
+std::string Substitute(const char* format, const substitute_internal::Arg& a0,
+                       const substitute_internal::Arg& a1,
+                       const substitute_internal::Arg& a2,
+                       const substitute_internal::Arg& a3,
+                       const substitute_internal::Arg& a4,
+                       const substitute_internal::Arg& a5,
+                       const substitute_internal::Arg& a6,
+                       const substitute_internal::Arg& a7)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 255,
+                     "There were 8 substitution arguments given, but "
+                     "this format std::string is either missing its $0-$7, or "
+                     "contains one of $8-$9");
+
+std::string Substitute(
+    const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8)
+    ABSL_BAD_CALL_IF(
+        substitute_internal::PlaceholderBitmask(format) != 511,
+        "There were 9 substitution arguments given, but "
+        "this format std::string is either missing its $0-$8, or contains a $9");
+
+std::string Substitute(
+    const char* format, const substitute_internal::Arg& a0,
+    const substitute_internal::Arg& a1, const substitute_internal::Arg& a2,
+    const substitute_internal::Arg& a3, const substitute_internal::Arg& a4,
+    const substitute_internal::Arg& a5, const substitute_internal::Arg& a6,
+    const substitute_internal::Arg& a7, const substitute_internal::Arg& a8,
+    const substitute_internal::Arg& a9)
+    ABSL_BAD_CALL_IF(substitute_internal::PlaceholderBitmask(format) != 1023,
+                     "There were 10 substitution arguments given, but this "
+                     "format std::string doesn't contain all of $0 through $9");
+#endif  // ABSL_BAD_CALL_IF
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_SUBSTITUTE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.cc
new file mode 100644
index 0000000..0dfd795
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.cc	
@@ -0,0 +1,52 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/synchronization/barrier.h"
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/synchronization/mutex.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Return whether int *arg is zero.
+static bool IsZero(void *arg) {
+  return 0 == *reinterpret_cast<int *>(arg);
+}
+
+bool Barrier::Block() {
+  MutexLock l(&this->lock_);
+
+  this->num_to_block_--;
+  if (this->num_to_block_ < 0) {
+    ABSL_RAW_LOG(
+        FATAL,
+        "Block() called too many times.  num_to_block_=%d out of total=%d",
+        this->num_to_block_, this->num_to_exit_);
+  }
+
+  this->lock_.Await(Condition(IsZero, &this->num_to_block_));
+
+  // Determine which thread can safely delete this Barrier object
+  this->num_to_exit_--;
+  ABSL_RAW_CHECK(this->num_to_exit_ >= 0, "barrier underflow");
+
+  // If num_to_exit_ == 0 then all other threads in the barrier have
+  // exited the Wait() and have released the Mutex so this thread is
+  // free to delete the barrier.
+  return this->num_to_exit_ == 0;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.h b/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.h
new file mode 100644
index 0000000..d8e7544
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/barrier.h	
@@ -0,0 +1,79 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// barrier.h
+// -----------------------------------------------------------------------------
+
+#ifndef ABSL_SYNCHRONIZATION_BARRIER_H_
+#define ABSL_SYNCHRONIZATION_BARRIER_H_
+
+#include "absl/base/thread_annotations.h"
+#include "absl/synchronization/mutex.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Barrier
+//
+// This class creates a barrier which blocks threads until a prespecified
+// threshold of threads (`num_threads`) utilizes the barrier. A thread utilizes
+// the `Barrier` by calling `Block()` on the barrier, which will block that
+// thread; no call to `Block()` will return until `num_threads` threads have
+// called it.
+//
+// Exactly one call to `Block()` will return `true`, which is then responsible
+// for destroying the barrier; because stack allocation will cause the barrier
+// to be deleted when it is out of scope, barriers should not be stack
+// allocated.
+//
+// Example:
+//
+//   // Main thread creates a `Barrier`:
+//   barrier = new Barrier(num_threads);
+//
+//   // Each participating thread could then call:
+//   if (barrier->Block()) delete barrier;  // Exactly one call to `Block()`
+//                                          // returns `true`; that call
+//                                          // deletes the barrier.
+class Barrier {
+ public:
+  // `num_threads` is the number of threads that will participate in the barrier
+  explicit Barrier(int num_threads)
+      : num_to_block_(num_threads), num_to_exit_(num_threads) {}
+
+  Barrier(const Barrier&) = delete;
+  Barrier& operator=(const Barrier&) = delete;
+
+  // Barrier::Block()
+  //
+  // Blocks the current thread, and returns only when the `num_threads`
+  // threshold of threads utilizing this barrier has been reached. `Block()`
+  // returns `true` for precisely one caller, which may then destroy the
+  // barrier.
+  //
+  // Memory ordering: For any threads X and Y, any action taken by X
+  // before X calls `Block()` will be visible to Y after Y returns from
+  // `Block()`.
+  bool Block();
+
+ private:
+  Mutex lock_;
+  int num_to_block_ ABSL_GUARDED_BY(lock_);
+  int num_to_exit_ ABSL_GUARDED_BY(lock_);
+};
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+#endif  // ABSL_SYNCHRONIZATION_BARRIER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.cc
new file mode 100644
index 0000000..3cea7ae
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.cc	
@@ -0,0 +1,57 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/synchronization/blocking_counter.h"
+
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Return whether int *arg is zero.
+static bool IsZero(void *arg) {
+  return 0 == *reinterpret_cast<int *>(arg);
+}
+
+bool BlockingCounter::DecrementCount() {
+  MutexLock l(&lock_);
+  count_--;
+  if (count_ < 0) {
+    ABSL_RAW_LOG(
+        FATAL,
+        "BlockingCounter::DecrementCount() called too many times.  count=%d",
+        count_);
+  }
+  return count_ == 0;
+}
+
+void BlockingCounter::Wait() {
+  MutexLock l(&this->lock_);
+  ABSL_RAW_CHECK(count_ >= 0, "BlockingCounter underflow");
+
+  // only one thread may call Wait(). To support more than one thread,
+  // implement a counter num_to_exit, like in the Barrier class.
+  ABSL_RAW_CHECK(num_waiting_ == 0, "multiple threads called Wait()");
+  num_waiting_++;
+
+  this->lock_.Await(Condition(IsZero, &this->count_));
+
+  // At this point, We know that all threads executing DecrementCount have
+  // released the lock, and so will not touch this object again.
+  // Therefore, the thread calling this method is free to delete the object
+  // after we return from this method.
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.h b/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.h
new file mode 100644
index 0000000..1f53f9f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/blocking_counter.h	
@@ -0,0 +1,99 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// blocking_counter.h
+// -----------------------------------------------------------------------------
+
+#ifndef ABSL_SYNCHRONIZATION_BLOCKING_COUNTER_H_
+#define ABSL_SYNCHRONIZATION_BLOCKING_COUNTER_H_
+
+#include "absl/base/thread_annotations.h"
+#include "absl/synchronization/mutex.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// BlockingCounter
+//
+// This class allows a thread to block for a pre-specified number of actions.
+// `BlockingCounter` maintains a single non-negative abstract integer "count"
+// with an initial value `initial_count`. A thread can then call `Wait()` on
+// this blocking counter to block until the specified number of events occur;
+// worker threads then call 'DecrementCount()` on the counter upon completion of
+// their work. Once the counter's internal "count" reaches zero, the blocked
+// thread unblocks.
+//
+// A `BlockingCounter` requires the following:
+//     - its `initial_count` is non-negative.
+//     - the number of calls to `DecrementCount()` on it is at most
+//       `initial_count`.
+//     - `Wait()` is called at most once on it.
+//
+// Given the above requirements, a `BlockingCounter` provides the following
+// guarantees:
+//     - Once its internal "count" reaches zero, no legal action on the object
+//       can further change the value of "count".
+//     - When `Wait()` returns, it is legal to destroy the `BlockingCounter`.
+//     - When `Wait()` returns, the number of calls to `DecrementCount()` on
+//       this blocking counter exactly equals `initial_count`.
+//
+// Example:
+//     BlockingCounter bcount(N);         // there are N items of work
+//     ... Allow worker threads to start.
+//     ... On completing each work item, workers do:
+//     ... bcount.DecrementCount();      // an item of work has been completed
+//
+//     bcount.Wait();                    // wait for all work to be complete
+//
+class BlockingCounter {
+ public:
+  explicit BlockingCounter(int initial_count)
+      : count_(initial_count), num_waiting_(0) {}
+
+  BlockingCounter(const BlockingCounter&) = delete;
+  BlockingCounter& operator=(const BlockingCounter&) = delete;
+
+  // BlockingCounter::DecrementCount()
+  //
+  // Decrements the counter's "count" by one, and return "count == 0". This
+  // function requires that "count != 0" when it is called.
+  //
+  // Memory ordering: For any threads X and Y, any action taken by X
+  // before it calls `DecrementCount()` is visible to thread Y after
+  // Y's call to `DecrementCount()`, provided Y's call returns `true`.
+  bool DecrementCount();
+
+  // BlockingCounter::Wait()
+  //
+  // Blocks until the counter reaches zero. This function may be called at most
+  // once. On return, `DecrementCount()` will have been called "initial_count"
+  // times and the blocking counter may be destroyed.
+  //
+  // Memory ordering: For any threads X and Y, any action taken by X
+  // before X calls `DecrementCount()` is visible to Y after Y returns
+  // from `Wait()`.
+  void Wait();
+
+ private:
+  Mutex lock_;
+  int count_ ABSL_GUARDED_BY(lock_);
+  int num_waiting_ ABSL_GUARDED_BY(lock_);
+};
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_SYNCHRONIZATION_BLOCKING_COUNTER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.cc
new file mode 100644
index 0000000..fa0070a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.cc	
@@ -0,0 +1,140 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stdint.h>
+#include <new>
+
+// This file is a no-op if the required LowLevelAlloc support is missing.
+#include "absl/base/internal/low_level_alloc.h"
+#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING
+
+#include <string.h>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/spinlock.h"
+#include "absl/base/internal/thread_identity.h"
+#include "absl/synchronization/internal/per_thread_sem.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+// ThreadIdentity storage is persistent, we maintain a free-list of previously
+// released ThreadIdentity objects.
+static base_internal::SpinLock freelist_lock(
+    base_internal::kLinkerInitialized);
+static base_internal::ThreadIdentity* thread_identity_freelist;
+
+// A per-thread destructor for reclaiming associated ThreadIdentity objects.
+// Since we must preserve their storage we cache them for re-use.
+void ReclaimThreadIdentity(void* v) {
+  base_internal::ThreadIdentity* identity =
+      static_cast<base_internal::ThreadIdentity*>(v);
+
+  // all_locks might have been allocated by the Mutex implementation.
+  // We free it here when we are notified that our thread is dying.
+  if (identity->per_thread_synch.all_locks != nullptr) {
+    base_internal::LowLevelAlloc::Free(identity->per_thread_synch.all_locks);
+  }
+
+  PerThreadSem::Destroy(identity);
+
+  // We must explicitly clear the current thread's identity:
+  // (a) Subsequent (unrelated) per-thread destructors may require an identity.
+  //     We must guarantee a new identity is used in this case (this instructor
+  //     will be reinvoked up to PTHREAD_DESTRUCTOR_ITERATIONS in this case).
+  // (b) ThreadIdentity implementations may depend on memory that is not
+  //     reinitialized before reuse.  We must allow explicit clearing of the
+  //     association state in this case.
+  base_internal::ClearCurrentThreadIdentity();
+  {
+    base_internal::SpinLockHolder l(&freelist_lock);
+    identity->next = thread_identity_freelist;
+    thread_identity_freelist = identity;
+  }
+}
+
+// Return value rounded up to next multiple of align.
+// Align must be a power of two.
+static intptr_t RoundUp(intptr_t addr, intptr_t align) {
+  return (addr + align - 1) & ~(align - 1);
+}
+
+static void ResetThreadIdentity(base_internal::ThreadIdentity* identity) {
+  base_internal::PerThreadSynch* pts = &identity->per_thread_synch;
+  pts->next = nullptr;
+  pts->skip = nullptr;
+  pts->may_skip = false;
+  pts->waitp = nullptr;
+  pts->suppress_fatal_errors = false;
+  pts->readers = 0;
+  pts->priority = 0;
+  pts->next_priority_read_cycles = 0;
+  pts->state.store(base_internal::PerThreadSynch::State::kAvailable,
+                   std::memory_order_relaxed);
+  pts->maybe_unlocking = false;
+  pts->wake = false;
+  pts->cond_waiter = false;
+  pts->all_locks = nullptr;
+  identity->blocked_count_ptr = nullptr;
+  identity->ticker.store(0, std::memory_order_relaxed);
+  identity->wait_start.store(0, std::memory_order_relaxed);
+  identity->is_idle.store(false, std::memory_order_relaxed);
+  identity->next = nullptr;
+}
+
+static base_internal::ThreadIdentity* NewThreadIdentity() {
+  base_internal::ThreadIdentity* identity = nullptr;
+
+  {
+    // Re-use a previously released object if possible.
+    base_internal::SpinLockHolder l(&freelist_lock);
+    if (thread_identity_freelist) {
+      identity = thread_identity_freelist;  // Take list-head.
+      thread_identity_freelist = thread_identity_freelist->next;
+    }
+  }
+
+  if (identity == nullptr) {
+    // Allocate enough space to align ThreadIdentity to a multiple of
+    // PerThreadSynch::kAlignment. This space is never released (it is
+    // added to a freelist by ReclaimThreadIdentity instead).
+    void* allocation = base_internal::LowLevelAlloc::Alloc(
+        sizeof(*identity) + base_internal::PerThreadSynch::kAlignment - 1);
+    // Round up the address to the required alignment.
+    identity = reinterpret_cast<base_internal::ThreadIdentity*>(
+        RoundUp(reinterpret_cast<intptr_t>(allocation),
+                base_internal::PerThreadSynch::kAlignment));
+  }
+  ResetThreadIdentity(identity);
+
+  return identity;
+}
+
+// Allocates and attaches ThreadIdentity object for the calling thread.  Returns
+// the new identity.
+// REQUIRES: CurrentThreadIdentity(false) == nullptr
+base_internal::ThreadIdentity* CreateThreadIdentity() {
+  base_internal::ThreadIdentity* identity = NewThreadIdentity();
+  PerThreadSem::Init(identity);
+  // Associate the value with the current thread, and attach our destructor.
+  base_internal::SetCurrentThreadIdentity(identity, ReclaimThreadIdentity);
+  return identity;
+}
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.h b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.h
new file mode 100644
index 0000000..e121f68
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/create_thread_identity.h	
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2017 The Abseil Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Interface for getting the current ThreadIdentity, creating one if necessary.
+// See thread_identity.h.
+//
+// This file is separate from thread_identity.h because creating a new
+// ThreadIdentity requires slightly higher level libraries (per_thread_sem
+// and low_level_alloc) than accessing an existing one.  This separation allows
+// us to have a smaller //absl/base:base.
+
+#ifndef ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
+#define ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
+
+#include "absl/base/internal/thread_identity.h"
+#include "absl/base/port.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+// Allocates and attaches a ThreadIdentity object for the calling thread.
+// For private use only.
+base_internal::ThreadIdentity* CreateThreadIdentity();
+
+// A per-thread destructor for reclaiming associated ThreadIdentity objects.
+// For private use only.
+void ReclaimThreadIdentity(void* v);
+
+// Returns the ThreadIdentity object representing the calling thread; guaranteed
+// to be unique for its lifetime.  The returned object will remain valid for the
+// program's lifetime; although it may be re-assigned to a subsequent thread.
+// If one does not exist for the calling thread, allocate it now.
+inline base_internal::ThreadIdentity* GetOrCreateCurrentThreadIdentity() {
+  base_internal::ThreadIdentity* identity =
+      base_internal::CurrentThreadIdentityIfPresent();
+  if (ABSL_PREDICT_FALSE(identity == nullptr)) {
+    return CreateThreadIdentity();
+  }
+  return identity;
+}
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.cc
new file mode 100644
index 0000000..6a2bcdf
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.cc	
@@ -0,0 +1,697 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// GraphCycles provides incremental cycle detection on a dynamic
+// graph using the following algorithm:
+//
+// A dynamic topological sort algorithm for directed acyclic graphs
+// David J. Pearce, Paul H. J. Kelly
+// Journal of Experimental Algorithmics (JEA) JEA Homepage archive
+// Volume 11, 2006, Article No. 1.7
+//
+// Brief summary of the algorithm:
+//
+// (1) Maintain a rank for each node that is consistent
+//     with the topological sort of the graph. I.e., path from x to y
+//     implies rank[x] < rank[y].
+// (2) When a new edge (x->y) is inserted, do nothing if rank[x] < rank[y].
+// (3) Otherwise: adjust ranks in the neighborhood of x and y.
+
+#include "absl/base/attributes.h"
+// This file is a no-op if the required LowLevelAlloc support is missing.
+#include "absl/base/internal/low_level_alloc.h"
+#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING
+
+#include "absl/synchronization/internal/graphcycles.h"
+
+#include <algorithm>
+#include <array>
+#include "absl/base/internal/hide_ptr.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+
+// Do not use STL.   This module does not use standard memory allocation.
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+namespace {
+
+// Avoid LowLevelAlloc's default arena since it calls malloc hooks in
+// which people are doing things like acquiring Mutexes.
+static absl::base_internal::SpinLock arena_mu(
+    absl::base_internal::kLinkerInitialized);
+static base_internal::LowLevelAlloc::Arena* arena;
+
+static void InitArenaIfNecessary() {
+  arena_mu.Lock();
+  if (arena == nullptr) {
+    arena = base_internal::LowLevelAlloc::NewArena(0);
+  }
+  arena_mu.Unlock();
+}
+
+// Number of inlined elements in Vec.  Hash table implementation
+// relies on this being a power of two.
+static const uint32_t kInline = 8;
+
+// A simple LowLevelAlloc based resizable vector with inlined storage
+// for a few elements.  T must be a plain type since constructor
+// and destructor are not run on elements of type T managed by Vec.
+template <typename T>
+class Vec {
+ public:
+  Vec() { Init(); }
+  ~Vec() { Discard(); }
+
+  void clear() {
+    Discard();
+    Init();
+  }
+
+  bool empty() const { return size_ == 0; }
+  uint32_t size() const { return size_; }
+  T* begin() { return ptr_; }
+  T* end() { return ptr_ + size_; }
+  const T& operator[](uint32_t i) const { return ptr_[i]; }
+  T& operator[](uint32_t i) { return ptr_[i]; }
+  const T& back() const { return ptr_[size_-1]; }
+  void pop_back() { size_--; }
+
+  void push_back(const T& v) {
+    if (size_ == capacity_) Grow(size_ + 1);
+    ptr_[size_] = v;
+    size_++;
+  }
+
+  void resize(uint32_t n) {
+    if (n > capacity_) Grow(n);
+    size_ = n;
+  }
+
+  void fill(const T& val) {
+    for (uint32_t i = 0; i < size(); i++) {
+      ptr_[i] = val;
+    }
+  }
+
+  // Guarantees src is empty at end.
+  // Provided for the hash table resizing code below.
+  void MoveFrom(Vec<T>* src) {
+    if (src->ptr_ == src->space_) {
+      // Need to actually copy
+      resize(src->size_);
+      std::copy(src->ptr_, src->ptr_ + src->size_, ptr_);
+      src->size_ = 0;
+    } else {
+      Discard();
+      ptr_ = src->ptr_;
+      size_ = src->size_;
+      capacity_ = src->capacity_;
+      src->Init();
+    }
+  }
+
+ private:
+  T* ptr_;
+  T space_[kInline];
+  uint32_t size_;
+  uint32_t capacity_;
+
+  void Init() {
+    ptr_ = space_;
+    size_ = 0;
+    capacity_ = kInline;
+  }
+
+  void Discard() {
+    if (ptr_ != space_) base_internal::LowLevelAlloc::Free(ptr_);
+  }
+
+  void Grow(uint32_t n) {
+    while (capacity_ < n) {
+      capacity_ *= 2;
+    }
+    size_t request = static_cast<size_t>(capacity_) * sizeof(T);
+    T* copy = static_cast<T*>(
+        base_internal::LowLevelAlloc::AllocWithArena(request, arena));
+    std::copy(ptr_, ptr_ + size_, copy);
+    Discard();
+    ptr_ = copy;
+  }
+
+  Vec(const Vec&) = delete;
+  Vec& operator=(const Vec&) = delete;
+};
+
+// A hash set of non-negative int32_t that uses Vec for its underlying storage.
+class NodeSet {
+ public:
+  NodeSet() { Init(); }
+
+  void clear() { Init(); }
+  bool contains(int32_t v) const { return table_[FindIndex(v)] == v; }
+
+  bool insert(int32_t v) {
+    uint32_t i = FindIndex(v);
+    if (table_[i] == v) {
+      return false;
+    }
+    if (table_[i] == kEmpty) {
+      // Only inserting over an empty cell increases the number of occupied
+      // slots.
+      occupied_++;
+    }
+    table_[i] = v;
+    // Double when 75% full.
+    if (occupied_ >= table_.size() - table_.size()/4) Grow();
+    return true;
+  }
+
+  void erase(uint32_t v) {
+    uint32_t i = FindIndex(v);
+    if (static_cast<uint32_t>(table_[i]) == v) {
+      table_[i] = kDel;
+    }
+  }
+
+  // Iteration: is done via HASH_FOR_EACH
+  // Example:
+  //    HASH_FOR_EACH(elem, node->out) { ... }
+#define HASH_FOR_EACH(elem, eset) \
+  for (int32_t elem, _cursor = 0; (eset).Next(&_cursor, &elem); )
+  bool Next(int32_t* cursor, int32_t* elem) {
+    while (static_cast<uint32_t>(*cursor) < table_.size()) {
+      int32_t v = table_[*cursor];
+      (*cursor)++;
+      if (v >= 0) {
+        *elem = v;
+        return true;
+      }
+    }
+    return false;
+  }
+
+ private:
+  enum : int32_t { kEmpty = -1, kDel = -2 };
+  Vec<int32_t> table_;
+  uint32_t occupied_;     // Count of non-empty slots (includes deleted slots)
+
+  static uint32_t Hash(uint32_t a) { return a * 41; }
+
+  // Return index for storing v.  May return an empty index or deleted index
+  int FindIndex(int32_t v) const {
+    // Search starting at hash index.
+    const uint32_t mask = table_.size() - 1;
+    uint32_t i = Hash(v) & mask;
+    int deleted_index = -1;  // If >= 0, index of first deleted element we see
+    while (true) {
+      int32_t e = table_[i];
+      if (v == e) {
+        return i;
+      } else if (e == kEmpty) {
+        // Return any previously encountered deleted slot.
+        return (deleted_index >= 0) ? deleted_index : i;
+      } else if (e == kDel && deleted_index < 0) {
+        // Keep searching since v might be present later.
+        deleted_index = i;
+      }
+      i = (i + 1) & mask;  // Linear probing; quadratic is slightly slower.
+    }
+  }
+
+  void Init() {
+    table_.clear();
+    table_.resize(kInline);
+    table_.fill(kEmpty);
+    occupied_ = 0;
+  }
+
+  void Grow() {
+    Vec<int32_t> copy;
+    copy.MoveFrom(&table_);
+    occupied_ = 0;
+    table_.resize(copy.size() * 2);
+    table_.fill(kEmpty);
+
+    for (const auto& e : copy) {
+      if (e >= 0) insert(e);
+    }
+  }
+
+  NodeSet(const NodeSet&) = delete;
+  NodeSet& operator=(const NodeSet&) = delete;
+};
+
+// We encode a node index and a node version in GraphId.  The version
+// number is incremented when the GraphId is freed which automatically
+// invalidates all copies of the GraphId.
+
+inline GraphId MakeId(int32_t index, uint32_t version) {
+  GraphId g;
+  g.handle =
+      (static_cast<uint64_t>(version) << 32) | static_cast<uint32_t>(index);
+  return g;
+}
+
+inline int32_t NodeIndex(GraphId id) {
+  return static_cast<uint32_t>(id.handle & 0xfffffffful);
+}
+
+inline uint32_t NodeVersion(GraphId id) {
+  return static_cast<uint32_t>(id.handle >> 32);
+}
+
+struct Node {
+  int32_t rank;               // rank number assigned by Pearce-Kelly algorithm
+  uint32_t version;           // Current version number
+  int32_t next_hash;          // Next entry in hash table
+  bool visited;               // Temporary marker used by depth-first-search
+  uintptr_t masked_ptr;       // User-supplied pointer
+  NodeSet in;                 // List of immediate predecessor nodes in graph
+  NodeSet out;                // List of immediate successor nodes in graph
+  int priority;               // Priority of recorded stack trace.
+  int nstack;                 // Depth of recorded stack trace.
+  void* stack[40];            // stack[0,nstack-1] holds stack trace for node.
+};
+
+// Hash table for pointer to node index lookups.
+class PointerMap {
+ public:
+  explicit PointerMap(const Vec<Node*>* nodes) : nodes_(nodes) {
+    table_.fill(-1);
+  }
+
+  int32_t Find(void* ptr) {
+    auto masked = base_internal::HidePtr(ptr);
+    for (int32_t i = table_[Hash(ptr)]; i != -1;) {
+      Node* n = (*nodes_)[i];
+      if (n->masked_ptr == masked) return i;
+      i = n->next_hash;
+    }
+    return -1;
+  }
+
+  void Add(void* ptr, int32_t i) {
+    int32_t* head = &table_[Hash(ptr)];
+    (*nodes_)[i]->next_hash = *head;
+    *head = i;
+  }
+
+  int32_t Remove(void* ptr) {
+    // Advance through linked list while keeping track of the
+    // predecessor slot that points to the current entry.
+    auto masked = base_internal::HidePtr(ptr);
+    for (int32_t* slot = &table_[Hash(ptr)]; *slot != -1; ) {
+      int32_t index = *slot;
+      Node* n = (*nodes_)[index];
+      if (n->masked_ptr == masked) {
+        *slot = n->next_hash;  // Remove n from linked list
+        n->next_hash = -1;
+        return index;
+      }
+      slot = &n->next_hash;
+    }
+    return -1;
+  }
+
+ private:
+  // Number of buckets in hash table for pointer lookups.
+  static constexpr uint32_t kHashTableSize = 8171;  // should be prime
+
+  const Vec<Node*>* nodes_;
+  std::array<int32_t, kHashTableSize> table_;
+
+  static uint32_t Hash(void* ptr) {
+    return reinterpret_cast<uintptr_t>(ptr) % kHashTableSize;
+  }
+};
+
+}  // namespace
+
+struct GraphCycles::Rep {
+  Vec<Node*> nodes_;
+  Vec<int32_t> free_nodes_;  // Indices for unused entries in nodes_
+  PointerMap ptrmap_;
+
+  // Temporary state.
+  Vec<int32_t> deltaf_;  // Results of forward DFS
+  Vec<int32_t> deltab_;  // Results of backward DFS
+  Vec<int32_t> list_;    // All nodes to reprocess
+  Vec<int32_t> merged_;  // Rank values to assign to list_ entries
+  Vec<int32_t> stack_;   // Emulates recursion stack for depth-first searches
+
+  Rep() : ptrmap_(&nodes_) {}
+};
+
+static Node* FindNode(GraphCycles::Rep* rep, GraphId id) {
+  Node* n = rep->nodes_[NodeIndex(id)];
+  return (n->version == NodeVersion(id)) ? n : nullptr;
+}
+
+GraphCycles::GraphCycles() {
+  InitArenaIfNecessary();
+  rep_ = new (base_internal::LowLevelAlloc::AllocWithArena(sizeof(Rep), arena))
+      Rep;
+}
+
+GraphCycles::~GraphCycles() {
+  for (auto* node : rep_->nodes_) {
+    node->Node::~Node();
+    base_internal::LowLevelAlloc::Free(node);
+  }
+  rep_->Rep::~Rep();
+  base_internal::LowLevelAlloc::Free(rep_);
+}
+
+bool GraphCycles::CheckInvariants() const {
+  Rep* r = rep_;
+  NodeSet ranks;  // Set of ranks seen so far.
+  for (uint32_t x = 0; x < r->nodes_.size(); x++) {
+    Node* nx = r->nodes_[x];
+    void* ptr = base_internal::UnhidePtr<void>(nx->masked_ptr);
+    if (ptr != nullptr && static_cast<uint32_t>(r->ptrmap_.Find(ptr)) != x) {
+      ABSL_RAW_LOG(FATAL, "Did not find live node in hash table %u %p", x, ptr);
+    }
+    if (nx->visited) {
+      ABSL_RAW_LOG(FATAL, "Did not clear visited marker on node %u", x);
+    }
+    if (!ranks.insert(nx->rank)) {
+      ABSL_RAW_LOG(FATAL, "Duplicate occurrence of rank %d", nx->rank);
+    }
+    HASH_FOR_EACH(y, nx->out) {
+      Node* ny = r->nodes_[y];
+      if (nx->rank >= ny->rank) {
+        ABSL_RAW_LOG(FATAL, "Edge %u->%d has bad rank assignment %d->%d", x, y,
+                     nx->rank, ny->rank);
+      }
+    }
+  }
+  return true;
+}
+
+GraphId GraphCycles::GetId(void* ptr) {
+  int32_t i = rep_->ptrmap_.Find(ptr);
+  if (i != -1) {
+    return MakeId(i, rep_->nodes_[i]->version);
+  } else if (rep_->free_nodes_.empty()) {
+    Node* n =
+        new (base_internal::LowLevelAlloc::AllocWithArena(sizeof(Node), arena))
+            Node;
+    n->version = 1;  // Avoid 0 since it is used by InvalidGraphId()
+    n->visited = false;
+    n->rank = rep_->nodes_.size();
+    n->masked_ptr = base_internal::HidePtr(ptr);
+    n->nstack = 0;
+    n->priority = 0;
+    rep_->nodes_.push_back(n);
+    rep_->ptrmap_.Add(ptr, n->rank);
+    return MakeId(n->rank, n->version);
+  } else {
+    // Preserve preceding rank since the set of ranks in use must be
+    // a permutation of [0,rep_->nodes_.size()-1].
+    int32_t r = rep_->free_nodes_.back();
+    rep_->free_nodes_.pop_back();
+    Node* n = rep_->nodes_[r];
+    n->masked_ptr = base_internal::HidePtr(ptr);
+    n->nstack = 0;
+    n->priority = 0;
+    rep_->ptrmap_.Add(ptr, r);
+    return MakeId(r, n->version);
+  }
+}
+
+void GraphCycles::RemoveNode(void* ptr) {
+  int32_t i = rep_->ptrmap_.Remove(ptr);
+  if (i == -1) {
+    return;
+  }
+  Node* x = rep_->nodes_[i];
+  HASH_FOR_EACH(y, x->out) {
+    rep_->nodes_[y]->in.erase(i);
+  }
+  HASH_FOR_EACH(y, x->in) {
+    rep_->nodes_[y]->out.erase(i);
+  }
+  x->in.clear();
+  x->out.clear();
+  x->masked_ptr = base_internal::HidePtr<void>(nullptr);
+  if (x->version == std::numeric_limits<uint32_t>::max()) {
+    // Cannot use x any more
+  } else {
+    x->version++;  // Invalidates all copies of node.
+    rep_->free_nodes_.push_back(i);
+  }
+}
+
+void* GraphCycles::Ptr(GraphId id) {
+  Node* n = FindNode(rep_, id);
+  return n == nullptr ? nullptr
+                      : base_internal::UnhidePtr<void>(n->masked_ptr);
+}
+
+bool GraphCycles::HasNode(GraphId node) {
+  return FindNode(rep_, node) != nullptr;
+}
+
+bool GraphCycles::HasEdge(GraphId x, GraphId y) const {
+  Node* xn = FindNode(rep_, x);
+  return xn && FindNode(rep_, y) && xn->out.contains(NodeIndex(y));
+}
+
+void GraphCycles::RemoveEdge(GraphId x, GraphId y) {
+  Node* xn = FindNode(rep_, x);
+  Node* yn = FindNode(rep_, y);
+  if (xn && yn) {
+    xn->out.erase(NodeIndex(y));
+    yn->in.erase(NodeIndex(x));
+    // No need to update the rank assignment since a previous valid
+    // rank assignment remains valid after an edge deletion.
+  }
+}
+
+static bool ForwardDFS(GraphCycles::Rep* r, int32_t n, int32_t upper_bound);
+static void BackwardDFS(GraphCycles::Rep* r, int32_t n, int32_t lower_bound);
+static void Reorder(GraphCycles::Rep* r);
+static void Sort(const Vec<Node*>&, Vec<int32_t>* delta);
+static void MoveToList(
+    GraphCycles::Rep* r, Vec<int32_t>* src, Vec<int32_t>* dst);
+
+bool GraphCycles::InsertEdge(GraphId idx, GraphId idy) {
+  Rep* r = rep_;
+  const int32_t x = NodeIndex(idx);
+  const int32_t y = NodeIndex(idy);
+  Node* nx = FindNode(r, idx);
+  Node* ny = FindNode(r, idy);
+  if (nx == nullptr || ny == nullptr) return true;  // Expired ids
+
+  if (nx == ny) return false;  // Self edge
+  if (!nx->out.insert(y)) {
+    // Edge already exists.
+    return true;
+  }
+
+  ny->in.insert(x);
+
+  if (nx->rank <= ny->rank) {
+    // New edge is consistent with existing rank assignment.
+    return true;
+  }
+
+  // Current rank assignments are incompatible with the new edge.  Recompute.
+  // We only need to consider nodes that fall in the range [ny->rank,nx->rank].
+  if (!ForwardDFS(r, y, nx->rank)) {
+    // Found a cycle.  Undo the insertion and tell caller.
+    nx->out.erase(y);
+    ny->in.erase(x);
+    // Since we do not call Reorder() on this path, clear any visited
+    // markers left by ForwardDFS.
+    for (const auto& d : r->deltaf_) {
+      r->nodes_[d]->visited = false;
+    }
+    return false;
+  }
+  BackwardDFS(r, x, ny->rank);
+  Reorder(r);
+  return true;
+}
+
+static bool ForwardDFS(GraphCycles::Rep* r, int32_t n, int32_t upper_bound) {
+  // Avoid recursion since stack space might be limited.
+  // We instead keep a stack of nodes to visit.
+  r->deltaf_.clear();
+  r->stack_.clear();
+  r->stack_.push_back(n);
+  while (!r->stack_.empty()) {
+    n = r->stack_.back();
+    r->stack_.pop_back();
+    Node* nn = r->nodes_[n];
+    if (nn->visited) continue;
+
+    nn->visited = true;
+    r->deltaf_.push_back(n);
+
+    HASH_FOR_EACH(w, nn->out) {
+      Node* nw = r->nodes_[w];
+      if (nw->rank == upper_bound) {
+        return false;  // Cycle
+      }
+      if (!nw->visited && nw->rank < upper_bound) {
+        r->stack_.push_back(w);
+      }
+    }
+  }
+  return true;
+}
+
+static void BackwardDFS(GraphCycles::Rep* r, int32_t n, int32_t lower_bound) {
+  r->deltab_.clear();
+  r->stack_.clear();
+  r->stack_.push_back(n);
+  while (!r->stack_.empty()) {
+    n = r->stack_.back();
+    r->stack_.pop_back();
+    Node* nn = r->nodes_[n];
+    if (nn->visited) continue;
+
+    nn->visited = true;
+    r->deltab_.push_back(n);
+
+    HASH_FOR_EACH(w, nn->in) {
+      Node* nw = r->nodes_[w];
+      if (!nw->visited && lower_bound < nw->rank) {
+        r->stack_.push_back(w);
+      }
+    }
+  }
+}
+
+static void Reorder(GraphCycles::Rep* r) {
+  Sort(r->nodes_, &r->deltab_);
+  Sort(r->nodes_, &r->deltaf_);
+
+  // Adds contents of delta lists to list_ (backwards deltas first).
+  r->list_.clear();
+  MoveToList(r, &r->deltab_, &r->list_);
+  MoveToList(r, &r->deltaf_, &r->list_);
+
+  // Produce sorted list of all ranks that will be reassigned.
+  r->merged_.resize(r->deltab_.size() + r->deltaf_.size());
+  std::merge(r->deltab_.begin(), r->deltab_.end(),
+             r->deltaf_.begin(), r->deltaf_.end(),
+             r->merged_.begin());
+
+  // Assign the ranks in order to the collected list.
+  for (uint32_t i = 0; i < r->list_.size(); i++) {
+    r->nodes_[r->list_[i]]->rank = r->merged_[i];
+  }
+}
+
+static void Sort(const Vec<Node*>& nodes, Vec<int32_t>* delta) {
+  struct ByRank {
+    const Vec<Node*>* nodes;
+    bool operator()(int32_t a, int32_t b) const {
+      return (*nodes)[a]->rank < (*nodes)[b]->rank;
+    }
+  };
+  ByRank cmp;
+  cmp.nodes = &nodes;
+  std::sort(delta->begin(), delta->end(), cmp);
+}
+
+static void MoveToList(
+    GraphCycles::Rep* r, Vec<int32_t>* src, Vec<int32_t>* dst) {
+  for (auto& v : *src) {
+    int32_t w = v;
+    v = r->nodes_[w]->rank;         // Replace v entry with its rank
+    r->nodes_[w]->visited = false;  // Prepare for future DFS calls
+    dst->push_back(w);
+  }
+}
+
+int GraphCycles::FindPath(GraphId idx, GraphId idy, int max_path_len,
+                          GraphId path[]) const {
+  Rep* r = rep_;
+  if (FindNode(r, idx) == nullptr || FindNode(r, idy) == nullptr) return 0;
+  const int32_t x = NodeIndex(idx);
+  const int32_t y = NodeIndex(idy);
+
+  // Forward depth first search starting at x until we hit y.
+  // As we descend into a node, we push it onto the path.
+  // As we leave a node, we remove it from the path.
+  int path_len = 0;
+
+  NodeSet seen;
+  r->stack_.clear();
+  r->stack_.push_back(x);
+  while (!r->stack_.empty()) {
+    int32_t n = r->stack_.back();
+    r->stack_.pop_back();
+    if (n < 0) {
+      // Marker to indicate that we are leaving a node
+      path_len--;
+      continue;
+    }
+
+    if (path_len < max_path_len) {
+      path[path_len] = MakeId(n, rep_->nodes_[n]->version);
+    }
+    path_len++;
+    r->stack_.push_back(-1);  // Will remove tentative path entry
+
+    if (n == y) {
+      return path_len;
+    }
+
+    HASH_FOR_EACH(w, r->nodes_[n]->out) {
+      if (seen.insert(w)) {
+        r->stack_.push_back(w);
+      }
+    }
+  }
+
+  return 0;
+}
+
+bool GraphCycles::IsReachable(GraphId x, GraphId y) const {
+  return FindPath(x, y, 0, nullptr) > 0;
+}
+
+void GraphCycles::UpdateStackTrace(GraphId id, int priority,
+                                   int (*get_stack_trace)(void** stack, int)) {
+  Node* n = FindNode(rep_, id);
+  if (n == nullptr || n->priority >= priority) {
+    return;
+  }
+  n->nstack = (*get_stack_trace)(n->stack, ABSL_ARRAYSIZE(n->stack));
+  n->priority = priority;
+}
+
+int GraphCycles::GetStackTrace(GraphId id, void*** ptr) {
+  Node* n = FindNode(rep_, id);
+  if (n == nullptr) {
+    *ptr = nullptr;
+    return 0;
+  } else {
+    *ptr = n->stack;
+    return n->nstack;
+  }
+}
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.h b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.h
new file mode 100644
index 0000000..ceba33e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/graphcycles.h	
@@ -0,0 +1,141 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_SYNCHRONIZATION_INTERNAL_GRAPHCYCLES_H_
+#define ABSL_SYNCHRONIZATION_INTERNAL_GRAPHCYCLES_H_
+
+// GraphCycles detects the introduction of a cycle into a directed
+// graph that is being built up incrementally.
+//
+// Nodes are identified by small integers.  It is not possible to
+// record multiple edges with the same (source, destination) pair;
+// requests to add an edge where one already exists are silently
+// ignored.
+//
+// It is also not possible to introduce a cycle; an attempt to insert
+// an edge that would introduce a cycle fails and returns false.
+//
+// GraphCycles uses no internal locking; calls into it should be
+// serialized externally.
+
+// Performance considerations:
+//   Works well on sparse graphs, poorly on dense graphs.
+//   Extra information is maintained incrementally to detect cycles quickly.
+//   InsertEdge() is very fast when the edge already exists, and reasonably fast
+//   otherwise.
+//   FindPath() is linear in the size of the graph.
+// The current implementation uses O(|V|+|E|) space.
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+// Opaque identifier for a graph node.
+struct GraphId {
+  uint64_t handle;
+
+  bool operator==(const GraphId& x) const { return handle == x.handle; }
+  bool operator!=(const GraphId& x) const { return handle != x.handle; }
+};
+
+// Return an invalid graph id that will never be assigned by GraphCycles.
+inline GraphId InvalidGraphId() {
+  return GraphId{0};
+}
+
+class GraphCycles {
+ public:
+  GraphCycles();
+  ~GraphCycles();
+
+  // Return the id to use for ptr, assigning one if necessary.
+  // Subsequent calls with the same ptr value will return the same id
+  // until Remove().
+  GraphId GetId(void* ptr);
+
+  // Remove "ptr" from the graph.  Its corresponding node and all
+  // edges to and from it are removed.
+  void RemoveNode(void* ptr);
+
+  // Return the pointer associated with id, or nullptr if id is not
+  // currently in the graph.
+  void* Ptr(GraphId id);
+
+  // Attempt to insert an edge from source_node to dest_node.  If the
+  // edge would introduce a cycle, return false without making any
+  // changes. Otherwise add the edge and return true.
+  bool InsertEdge(GraphId source_node, GraphId dest_node);
+
+  // Remove any edge that exists from source_node to dest_node.
+  void RemoveEdge(GraphId source_node, GraphId dest_node);
+
+  // Return whether node exists in the graph.
+  bool HasNode(GraphId node);
+
+  // Return whether there is an edge directly from source_node to dest_node.
+  bool HasEdge(GraphId source_node, GraphId dest_node) const;
+
+  // Return whether dest_node is reachable from source_node
+  // by following edges.
+  bool IsReachable(GraphId source_node, GraphId dest_node) const;
+
+  // Find a path from "source" to "dest".  If such a path exists,
+  // place the nodes on the path in the array path[], and return
+  // the number of nodes on the path.  If the path is longer than
+  // max_path_len nodes, only the first max_path_len nodes are placed
+  // in path[].  The client should compare the return value with
+  // max_path_len" to see when this occurs.  If no path exists, return
+  // 0.  Any valid path stored in path[] will start with "source" and
+  // end with "dest".  There is no guarantee that the path is the
+  // shortest, but no node will appear twice in the path, except the
+  // source and destination node if they are identical; therefore, the
+  // return value is at most one greater than the number of nodes in
+  // the graph.
+  int FindPath(GraphId source, GraphId dest, int max_path_len,
+               GraphId path[]) const;
+
+  // Update the stack trace recorded for id with the current stack
+  // trace if the last time it was updated had a smaller priority
+  // than the priority passed on this call.
+  //
+  // *get_stack_trace is called to get the stack trace.
+  void UpdateStackTrace(GraphId id, int priority,
+                        int (*get_stack_trace)(void**, int));
+
+  // Set *ptr to the beginning of the array that holds the recorded
+  // stack trace for id and return the depth of the stack trace.
+  int GetStackTrace(GraphId id, void*** ptr);
+
+  // Check internal invariants. Crashes on failure, returns true on success.
+  // Expensive: should only be called from graphcycles_test.cc.
+  bool CheckInvariants() const;
+
+  // ----------------------------------------------------
+  struct Rep;
+ private:
+  Rep *rep_;      // opaque representation
+  GraphCycles(const GraphCycles&) = delete;
+  GraphCycles& operator=(const GraphCycles&) = delete;
+};
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/kernel_timeout.h b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/kernel_timeout.h
new file mode 100644
index 0000000..d6ac5db
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/kernel_timeout.h	
@@ -0,0 +1,155 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// An optional absolute timeout, with nanosecond granularity,
+// compatible with absl::Time. Suitable for in-register
+// parameter-passing (e.g. syscalls.)
+// Constructible from a absl::Time (for a timeout to be respected) or {}
+// (for "no timeout".)
+// This is a private low-level API for use by a handful of low-level
+// components that are friends of this class. Higher-level components
+// should build APIs based on absl::Time and absl::Duration.
+
+#ifndef ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
+#define ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
+
+#include <time.h>
+#include <algorithm>
+#include <limits>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/time/clock.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+class Futex;
+class Waiter;
+
+class KernelTimeout {
+ public:
+  // A timeout that should expire at <t>.  Any value, in the full
+  // InfinitePast() to InfiniteFuture() range, is valid here and will be
+  // respected.
+  explicit KernelTimeout(absl::Time t) : ns_(MakeNs(t)) {}
+  // No timeout.
+  KernelTimeout() : ns_(0) {}
+
+  // A more explicit factory for those who prefer it.  Equivalent to {}.
+  static KernelTimeout Never() { return {}; }
+
+  // We explicitly do not support other custom formats: timespec, int64_t nanos.
+  // Unify on this and absl::Time, please.
+
+  bool has_timeout() const { return ns_ != 0; }
+
+ private:
+  // internal rep, not user visible: ns after unix epoch.
+  // zero = no timeout.
+  // Negative we treat as an unlikely (and certainly expired!) but valid
+  // timeout.
+  int64_t ns_;
+
+  static int64_t MakeNs(absl::Time t) {
+    // optimization--InfiniteFuture is common "no timeout" value
+    // and cheaper to compare than convert.
+    if (t == absl::InfiniteFuture()) return 0;
+    int64_t x = ToUnixNanos(t);
+
+    // A timeout that lands exactly on the epoch (x=0) needs to be respected,
+    // so we alter it unnoticably to 1.  Negative timeouts are in
+    // theory supported, but handled poorly by the kernel (long
+    // delays) so push them forward too; since all such times have
+    // already passed, it's indistinguishable.
+    if (x <= 0) x = 1;
+    // A time larger than what can be represented to the kernel is treated
+    // as no timeout.
+    if (x == (std::numeric_limits<int64_t>::max)()) x = 0;
+    return x;
+  }
+
+  // Convert to parameter for sem_timedwait/futex/similar.  Only for approved
+  // users.  Do not call if !has_timeout.
+  struct timespec MakeAbsTimespec() {
+    int64_t n = ns_;
+    static const int64_t kNanosPerSecond = 1000 * 1000 * 1000;
+    if (n == 0) {
+      ABSL_RAW_LOG(
+          ERROR,
+          "Tried to create a timespec from a non-timeout; never do this.");
+      // But we'll try to continue sanely.  no-timeout ~= saturated timeout.
+      n = (std::numeric_limits<int64_t>::max)();
+    }
+
+    // Kernel APIs validate timespecs as being at or after the epoch,
+    // despite the kernel time type being signed.  However, no one can
+    // tell the difference between a timeout at or before the epoch (since
+    // all such timeouts have expired!)
+    if (n < 0) n = 0;
+
+    struct timespec abstime;
+    int64_t seconds = (std::min)(n / kNanosPerSecond,
+                               int64_t{(std::numeric_limits<time_t>::max)()});
+    abstime.tv_sec = static_cast<time_t>(seconds);
+    abstime.tv_nsec =
+        static_cast<decltype(abstime.tv_nsec)>(n % kNanosPerSecond);
+    return abstime;
+  }
+
+#ifdef _WIN32
+  // Converts to milliseconds from now, or INFINITE when
+  // !has_timeout(). For use by SleepConditionVariableSRW on
+  // Windows. Callers should recognize that the return value is a
+  // relative duration (it should be recomputed by calling this method
+  // in the case of a spurious wakeup).
+  // This header file may be included transitively by public header files,
+  // so we define our own DWORD and INFINITE instead of getting them from
+  // <intsafe.h> and <WinBase.h>.
+  typedef unsigned long DWord;  // NOLINT
+  DWord InMillisecondsFromNow() const {
+    constexpr DWord kInfinite = (std::numeric_limits<DWord>::max)();
+    if (!has_timeout()) {
+      return kInfinite;
+    }
+    // The use of absl::Now() to convert from absolute time to
+    // relative time means that absl::Now() cannot use anything that
+    // depends on KernelTimeout (for example, Mutex) on Windows.
+    int64_t now = ToUnixNanos(absl::Now());
+    if (ns_ >= now) {
+      // Round up so that Now() + ms_from_now >= ns_.
+      constexpr uint64_t max_nanos =
+          (std::numeric_limits<int64_t>::max)() - 999999u;
+      uint64_t ms_from_now =
+          (std::min<uint64_t>(max_nanos, ns_ - now) + 999999u) / 1000000u;
+      if (ms_from_now > kInfinite) {
+        return kInfinite;
+      }
+      return static_cast<DWord>(ms_from_now);
+    }
+    return 0;
+  }
+#endif
+
+  friend class Futex;
+  friend class Waiter;
+};
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/mutex_nonprod.inc b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/mutex_nonprod.inc
new file mode 100644
index 0000000..a1502e7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/mutex_nonprod.inc	
@@ -0,0 +1,261 @@
+// Do not include.  This is an implementation detail of base/mutex.h.
+//
+// Declares three classes:
+//
+// base::internal::MutexImpl - implementation helper for Mutex
+// base::internal::CondVarImpl - implementation helper for CondVar
+// base::internal::SynchronizationStorage<T> - implementation helper for
+//                                             Mutex, CondVar
+
+#include <type_traits>
+
+#if defined(_WIN32)
+#include <condition_variable>
+#include <mutex>
+#else
+#include <pthread.h>
+#endif
+
+#include "absl/base/call_once.h"
+#include "absl/time/time.h"
+
+// Declare that Mutex::ReaderLock is actually Lock().  Intended primarily
+// for tests, and even then as a last resort.
+#ifdef ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE
+#error ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE cannot be directly set
+#else
+#define ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE 1
+#endif
+
+// Declare that Mutex::EnableInvariantDebugging is not implemented.
+// Intended primarily for tests, and even then as a last resort.
+#ifdef ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED
+#error ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED cannot be directly set
+#else
+#define ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED 1
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+class Condition;
+
+namespace synchronization_internal {
+
+class MutexImpl;
+
+// Do not use this implementation detail of CondVar. Provides most of the
+// implementation, but should not be placed directly in static storage
+// because it will not linker initialize properly. See
+// SynchronizationStorage<T> below for what we mean by linker
+// initialization.
+class CondVarImpl {
+ public:
+  CondVarImpl();
+  CondVarImpl(const CondVarImpl&) = delete;
+  CondVarImpl& operator=(const CondVarImpl&) = delete;
+  ~CondVarImpl();
+
+  void Signal();
+  void SignalAll();
+  void Wait(MutexImpl* mutex);
+  bool WaitWithDeadline(MutexImpl* mutex, absl::Time deadline);
+
+ private:
+#if defined(_WIN32)
+  std::condition_variable_any std_cv_;
+#else
+  pthread_cond_t pthread_cv_;
+#endif
+};
+
+// Do not use this implementation detail of Mutex. Provides most of the
+// implementation, but should not be placed directly in static storage
+// because it will not linker initialize properly. See
+// SynchronizationStorage<T> below for what we mean by linker
+// initialization.
+class MutexImpl {
+ public:
+  MutexImpl();
+  MutexImpl(const MutexImpl&) = delete;
+  MutexImpl& operator=(const MutexImpl&) = delete;
+  ~MutexImpl();
+
+  void Lock();
+  bool TryLock();
+  void Unlock();
+  void Await(const Condition& cond);
+  bool AwaitWithDeadline(const Condition& cond, absl::Time deadline);
+
+ private:
+  friend class CondVarImpl;
+
+#if defined(_WIN32)
+  std::mutex std_mutex_;
+#else
+  pthread_mutex_t pthread_mutex_;
+#endif
+
+  // True if the underlying mutex is locked.  If the destructor is entered
+  // while locked_, the underlying mutex is unlocked.  Mutex supports
+  // destruction while locked, but the same is undefined behavior for both
+  // pthread_mutex_t and std::mutex.
+  bool locked_ = false;
+
+  // Signaled before releasing the lock, in support of Await.
+  CondVarImpl released_;
+};
+
+// Do not use this implementation detail of CondVar and Mutex.  A storage
+// space for T that supports a LinkerInitialized constructor. T must
+// have a default constructor, which is called by the first call to
+// get(). T's destructor is never called if the LinkerInitialized
+// constructor is called.
+//
+// Objects constructed with the default constructor are constructed and
+// destructed like any other object, and should never be allocated in
+// static storage.
+//
+// Objects constructed with the LinkerInitialized constructor should
+// always be in static storage. For such objects, calls to get() are always
+// valid, except from signal handlers.
+//
+// Note that this implementation relies on undefined language behavior that
+// are known to hold for the set of supported compilers. An analysis
+// follows.
+//
+// From the C++11 standard:
+//
+// [basic.life] says an object has non-trivial initialization if it is of
+// class type and it is initialized by a constructor other than a trivial
+// default constructor.  (the LinkerInitialized constructor is
+// non-trivial)
+//
+// [basic.life] says the lifetime of an object with a non-trivial
+// constructor begins when the call to the constructor is complete.
+//
+// [basic.life] says the lifetime of an object with non-trivial destructor
+// ends when the call to the destructor begins.
+//
+// [basic.life] p5 specifies undefined behavior when accessing non-static
+// members of an instance outside its
+// lifetime. (SynchronizationStorage::get() access non-static members)
+//
+// So, LinkerInitialized object of SynchronizationStorage uses a
+// non-trivial constructor, which is called at some point during dynamic
+// initialization, and is therefore subject to order of dynamic
+// initialization bugs, where get() is called before the object's
+// constructor is, resulting in undefined behavior.
+//
+// Similarly, a LinkerInitialized SynchronizationStorage object has a
+// non-trivial destructor, and so its lifetime ends at some point during
+// destruction of objects with static storage duration [basic.start.term]
+// p4. There is a window where other exit code could call get() after this
+// occurs, resulting in undefined behavior.
+//
+// Combined, these statements imply that LinkerInitialized instances
+// of SynchronizationStorage<T> rely on undefined behavior.
+//
+// However, in practice, the implementation works on all supported
+// compilers. Specifically, we rely on:
+//
+// a) zero-initialization being sufficient to initialize
+// LinkerInitialized instances for the purposes of calling
+// get(), regardless of when the constructor is called. This is
+// because the is_dynamic_ boolean is correctly zero-initialized to
+// false.
+//
+// b) the LinkerInitialized constructor is a NOP, and immaterial to
+// even to concurrent calls to get().
+//
+// c) the destructor being a NOP for LinkerInitialized objects
+// (guaranteed by a check for !is_dynamic_), and so any concurrent and
+// subsequent calls to get() functioning as if the destructor were not
+// called, by virtue of the instances' storage remaining valid after the
+// destructor runs.
+//
+// d) That a-c apply transitively when SynchronizationStorage<T> is the
+// only member of a class allocated in static storage.
+//
+// Nothing in the language standard guarantees that a-d hold.  In practice,
+// these hold in all supported compilers.
+//
+// Future direction:
+//
+// Ideally, we would simply use std::mutex or a similar class, which when
+// allocated statically would support use immediately after static
+// initialization up until static storage is reclaimed (i.e. the properties
+// we require of all "linker initialized" instances).
+//
+// Regarding construction in static storage, std::mutex is required to
+// provide a constexpr default constructor [thread.mutex.class], which
+// ensures the instance's lifetime begins with static initialization
+// [basic.start.init], and so is immune to any problems caused by the order
+// of dynamic initialization. However, as of this writing Microsoft's
+// Visual Studio does not provide a constexpr constructor for std::mutex.
+// See
+// https://blogs.msdn.microsoft.com/vcblog/2015/06/02/constexpr-complete-for-vs-2015-rtm-c11-compiler-c17-stl/
+//
+// Regarding destruction of instances in static storage, [basic.life] does
+// say an object ends when storage in which the occupies is released, in
+// the case of non-trivial destructor. However, std::mutex is not specified
+// to have a trivial destructor.
+//
+// So, we would need a class with a constexpr default constructor and a
+// trivial destructor. Today, we can achieve neither desired property using
+// std::mutex directly.
+template <typename T>
+class SynchronizationStorage {
+ public:
+  // Instances allocated on the heap or on the stack should use the default
+  // constructor.
+  SynchronizationStorage()
+      : is_dynamic_(true), once_() {}
+
+  // Instances allocated in static storage (not on the heap, not on the
+  // stack) should use this constructor.
+  explicit SynchronizationStorage(base_internal::LinkerInitialized) {}
+
+  constexpr explicit SynchronizationStorage(absl::ConstInitType)
+      : is_dynamic_(false), once_(), space_{{0}} {}
+
+  SynchronizationStorage(SynchronizationStorage&) = delete;
+  SynchronizationStorage& operator=(SynchronizationStorage&) = delete;
+
+  ~SynchronizationStorage() {
+    if (is_dynamic_) {
+      get()->~T();
+    }
+  }
+
+  // Retrieve the object in storage. This is fast and thread safe, but does
+  // incur the cost of absl::call_once().
+  //
+  // For instances in static storage constructed with the
+  // LinkerInitialized constructor, may be called at any time without
+  // regard for order of dynamic initialization or destruction of objects
+  // in static storage. See the class comment for caveats.
+  T* get() {
+    absl::call_once(once_, SynchronizationStorage::Construct, this);
+    return reinterpret_cast<T*>(&space_);
+  }
+
+ private:
+  static void Construct(SynchronizationStorage<T>* self) {
+    new (&self->space_) T();
+  }
+
+  // When true, T's destructor is run when this is destructed.
+  //
+  // The LinkerInitialized constructor assumes this value will be set
+  // false by static initialization.
+  bool is_dynamic_;
+
+  absl::once_flag once_;
+
+  // An aligned space for the T.
+  alignas(T) unsigned char space_[sizeof(T)];
+};
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.cc
new file mode 100644
index 0000000..821ca9b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.cc	
@@ -0,0 +1,106 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is a no-op if the required LowLevelAlloc support is missing.
+#include "absl/base/internal/low_level_alloc.h"
+#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING
+
+#include "absl/synchronization/internal/per_thread_sem.h"
+
+#include <atomic>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/thread_identity.h"
+#include "absl/synchronization/internal/waiter.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+void PerThreadSem::SetThreadBlockedCounter(std::atomic<int> *counter) {
+  base_internal::ThreadIdentity *identity;
+  identity = GetOrCreateCurrentThreadIdentity();
+  identity->blocked_count_ptr = counter;
+}
+
+std::atomic<int> *PerThreadSem::GetThreadBlockedCounter() {
+  base_internal::ThreadIdentity *identity;
+  identity = GetOrCreateCurrentThreadIdentity();
+  return identity->blocked_count_ptr;
+}
+
+void PerThreadSem::Init(base_internal::ThreadIdentity *identity) {
+  new (Waiter::GetWaiter(identity)) Waiter();
+  identity->ticker.store(0, std::memory_order_relaxed);
+  identity->wait_start.store(0, std::memory_order_relaxed);
+  identity->is_idle.store(false, std::memory_order_relaxed);
+}
+
+void PerThreadSem::Destroy(base_internal::ThreadIdentity *identity) {
+  Waiter::GetWaiter(identity)->~Waiter();
+}
+
+void PerThreadSem::Tick(base_internal::ThreadIdentity *identity) {
+  const int ticker =
+      identity->ticker.fetch_add(1, std::memory_order_relaxed) + 1;
+  const int wait_start = identity->wait_start.load(std::memory_order_relaxed);
+  const bool is_idle = identity->is_idle.load(std::memory_order_relaxed);
+  if (wait_start && (ticker - wait_start > Waiter::kIdlePeriods) && !is_idle) {
+    // Wakeup the waiting thread since it is time for it to become idle.
+    Waiter::GetWaiter(identity)->Poke();
+  }
+}
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+extern "C" {
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalPerThreadSemPost(
+    absl::base_internal::ThreadIdentity *identity) {
+  absl::synchronization_internal::Waiter::GetWaiter(identity)->Post();
+}
+
+ABSL_ATTRIBUTE_WEAK bool AbslInternalPerThreadSemWait(
+    absl::synchronization_internal::KernelTimeout t) {
+  bool timeout = false;
+  absl::base_internal::ThreadIdentity *identity;
+  identity = absl::synchronization_internal::GetOrCreateCurrentThreadIdentity();
+
+  // Ensure wait_start != 0.
+  int ticker = identity->ticker.load(std::memory_order_relaxed);
+  identity->wait_start.store(ticker ? ticker : 1, std::memory_order_relaxed);
+  identity->is_idle.store(false, std::memory_order_relaxed);
+
+  if (identity->blocked_count_ptr != nullptr) {
+    // Increment count of threads blocked in a given thread pool.
+    identity->blocked_count_ptr->fetch_add(1, std::memory_order_relaxed);
+  }
+
+  timeout =
+      !absl::synchronization_internal::Waiter::GetWaiter(identity)->Wait(t);
+
+  if (identity->blocked_count_ptr != nullptr) {
+    identity->blocked_count_ptr->fetch_sub(1, std::memory_order_relaxed);
+  }
+
+  identity->is_idle.store(false, std::memory_order_relaxed);
+  identity->wait_start.store(0, std::memory_order_relaxed);
+  return !timeout;
+}
+
+}  // extern "C"
+
+#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.h b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.h
new file mode 100644
index 0000000..8ab4391
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/per_thread_sem.h	
@@ -0,0 +1,115 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// PerThreadSem is a low-level synchronization primitive controlling the
+// runnability of a single thread, used internally by Mutex and CondVar.
+//
+// This is NOT a general-purpose synchronization mechanism, and should not be
+// used directly by applications.  Applications should use Mutex and CondVar.
+//
+// The semantics of PerThreadSem are the same as that of a counting semaphore.
+// Each thread maintains an abstract "count" value associated with its identity.
+
+#ifndef ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_
+#define ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_
+
+#include <atomic>
+
+#include "absl/base/internal/thread_identity.h"
+#include "absl/synchronization/internal/create_thread_identity.h"
+#include "absl/synchronization/internal/kernel_timeout.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class Mutex;
+
+namespace synchronization_internal {
+
+class PerThreadSem {
+ public:
+  PerThreadSem() = delete;
+  PerThreadSem(const PerThreadSem&) = delete;
+  PerThreadSem& operator=(const PerThreadSem&) = delete;
+
+  // Routine invoked periodically (once a second) by a background thread.
+  // Has no effect on user-visible state.
+  static void Tick(base_internal::ThreadIdentity* identity);
+
+  // ---------------------------------------------------------------------------
+  // Routines used by autosizing threadpools to detect when threads are
+  // blocked.  Each thread has a counter pointer, initially zero.  If non-zero,
+  // the implementation atomically increments the counter when it blocks on a
+  // semaphore, a decrements it again when it wakes.  This allows a threadpool
+  // to keep track of how many of its threads are blocked.
+  // SetThreadBlockedCounter() should be used only by threadpool
+  // implementations.  GetThreadBlockedCounter() should be used by modules that
+  // block threads; if the pointer returned is non-zero, the location should be
+  // incremented before the thread blocks, and decremented after it wakes.
+  static void SetThreadBlockedCounter(std::atomic<int> *counter);
+  static std::atomic<int> *GetThreadBlockedCounter();
+
+ private:
+  // Create the PerThreadSem associated with "identity".  Initializes count=0.
+  // REQUIRES: May only be called by ThreadIdentity.
+  static void Init(base_internal::ThreadIdentity* identity);
+
+  // Destroy the PerThreadSem associated with "identity".
+  // REQUIRES: May only be called by ThreadIdentity.
+  static void Destroy(base_internal::ThreadIdentity* identity);
+
+  // Increments "identity"'s count.
+  static inline void Post(base_internal::ThreadIdentity* identity);
+
+  // Waits until either our count > 0 or t has expired.
+  // If count > 0, decrements count and returns true.  Otherwise returns false.
+  // !t.has_timeout() => Wait(t) will return true.
+  static inline bool Wait(KernelTimeout t);
+
+  // White-listed callers.
+  friend class PerThreadSemTest;
+  friend class absl::Mutex;
+  friend absl::base_internal::ThreadIdentity* CreateThreadIdentity();
+  friend void ReclaimThreadIdentity(void* v);
+};
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// In some build configurations we pass --detect-odr-violations to the
+// gold linker.  This causes it to flag weak symbol overrides as ODR
+// violations.  Because ODR only applies to C++ and not C,
+// --detect-odr-violations ignores symbols not mangled with C++ names.
+// By changing our extension points to be extern "C", we dodge this
+// check.
+extern "C" {
+void AbslInternalPerThreadSemPost(
+    absl::base_internal::ThreadIdentity* identity);
+bool AbslInternalPerThreadSemWait(
+    absl::synchronization_internal::KernelTimeout t);
+}  // extern "C"
+
+void absl::synchronization_internal::PerThreadSem::Post(
+    absl::base_internal::ThreadIdentity* identity) {
+  AbslInternalPerThreadSemPost(identity);
+}
+
+bool absl::synchronization_internal::PerThreadSem::Wait(
+    absl::synchronization_internal::KernelTimeout t) {
+  return AbslInternalPerThreadSemWait(t);
+}
+
+#endif  // ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.cc
new file mode 100644
index 0000000..2949f5a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.cc	
@@ -0,0 +1,484 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/synchronization/internal/waiter.h"
+
+#include "absl/base/config.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <pthread.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#ifdef __linux__
+#include <linux/futex.h>
+#include <sys/syscall.h>
+#endif
+
+#ifdef ABSL_HAVE_SEMAPHORE_H
+#include <semaphore.h>
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <time.h>
+
+#include <atomic>
+#include <cassert>
+#include <cstdint>
+#include <new>
+#include <type_traits>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/thread_identity.h"
+#include "absl/base/optimization.h"
+#include "absl/synchronization/internal/kernel_timeout.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+static void MaybeBecomeIdle() {
+  base_internal::ThreadIdentity *identity =
+      base_internal::CurrentThreadIdentityIfPresent();
+  assert(identity != nullptr);
+  const bool is_idle = identity->is_idle.load(std::memory_order_relaxed);
+  const int ticker = identity->ticker.load(std::memory_order_relaxed);
+  const int wait_start = identity->wait_start.load(std::memory_order_relaxed);
+  if (!is_idle && ticker - wait_start > Waiter::kIdlePeriods) {
+    identity->is_idle.store(true, std::memory_order_relaxed);
+  }
+}
+
+#if ABSL_WAITER_MODE == ABSL_WAITER_MODE_FUTEX
+
+// Some Android headers are missing these definitions even though they
+// support these futex operations.
+#ifdef __BIONIC__
+#ifndef SYS_futex
+#define SYS_futex __NR_futex
+#endif
+#ifndef FUTEX_WAIT_BITSET
+#define FUTEX_WAIT_BITSET 9
+#endif
+#ifndef FUTEX_PRIVATE_FLAG
+#define FUTEX_PRIVATE_FLAG 128
+#endif
+#ifndef FUTEX_CLOCK_REALTIME
+#define FUTEX_CLOCK_REALTIME 256
+#endif
+#ifndef FUTEX_BITSET_MATCH_ANY
+#define FUTEX_BITSET_MATCH_ANY 0xFFFFFFFF
+#endif
+#endif
+
+class Futex {
+ public:
+  static int WaitUntil(std::atomic<int32_t> *v, int32_t val,
+                       KernelTimeout t) {
+    int err = 0;
+    if (t.has_timeout()) {
+      // https://locklessinc.com/articles/futex_cheat_sheet/
+      // Unlike FUTEX_WAIT, FUTEX_WAIT_BITSET uses absolute time.
+      struct timespec abs_timeout = t.MakeAbsTimespec();
+      // Atomically check that the futex value is still 0, and if it
+      // is, sleep until abs_timeout or until woken by FUTEX_WAKE.
+      err = syscall(
+          SYS_futex, reinterpret_cast<int32_t *>(v),
+          FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME, val,
+          &abs_timeout, nullptr, FUTEX_BITSET_MATCH_ANY);
+    } else {
+      // Atomically check that the futex value is still 0, and if it
+      // is, sleep until woken by FUTEX_WAKE.
+      err = syscall(SYS_futex, reinterpret_cast<int32_t *>(v),
+                    FUTEX_WAIT | FUTEX_PRIVATE_FLAG, val, nullptr);
+    }
+    if (err != 0) {
+      err = -errno;
+    }
+    return err;
+  }
+
+  static int Wake(std::atomic<int32_t> *v, int32_t count) {
+    int err = syscall(SYS_futex, reinterpret_cast<int32_t *>(v),
+                      FUTEX_WAKE | FUTEX_PRIVATE_FLAG, count);
+    if (ABSL_PREDICT_FALSE(err < 0)) {
+      err = -errno;
+    }
+    return err;
+  }
+};
+
+Waiter::Waiter() {
+  futex_.store(0, std::memory_order_relaxed);
+}
+
+Waiter::~Waiter() = default;
+
+bool Waiter::Wait(KernelTimeout t) {
+  // Loop until we can atomically decrement futex from a positive
+  // value, waiting on a futex while we believe it is zero.
+  // Note that, since the thread ticker is just reset, we don't need to check
+  // whether the thread is idle on the very first pass of the loop.
+  bool first_pass = true;
+  while (true) {
+    int32_t x = futex_.load(std::memory_order_relaxed);
+    while (x != 0) {
+      if (!futex_.compare_exchange_weak(x, x - 1,
+                                        std::memory_order_acquire,
+                                        std::memory_order_relaxed)) {
+        continue;  // Raced with someone, retry.
+      }
+      return true;  // Consumed a wakeup, we are done.
+    }
+
+
+    if (!first_pass) MaybeBecomeIdle();
+    const int err = Futex::WaitUntil(&futex_, 0, t);
+    if (err != 0) {
+      if (err == -EINTR || err == -EWOULDBLOCK) {
+        // Do nothing, the loop will retry.
+      } else if (err == -ETIMEDOUT) {
+        return false;
+      } else {
+        ABSL_RAW_LOG(FATAL, "Futex operation failed with error %d\n", err);
+      }
+    }
+    first_pass = false;
+  }
+}
+
+void Waiter::Post() {
+  if (futex_.fetch_add(1, std::memory_order_release) == 0) {
+    // We incremented from 0, need to wake a potential waiter.
+    Poke();
+  }
+}
+
+void Waiter::Poke() {
+  // Wake one thread waiting on the futex.
+  const int err = Futex::Wake(&futex_, 1);
+  if (ABSL_PREDICT_FALSE(err < 0)) {
+    ABSL_RAW_LOG(FATAL, "Futex operation failed with error %d\n", err);
+  }
+}
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_CONDVAR
+
+class PthreadMutexHolder {
+ public:
+  explicit PthreadMutexHolder(pthread_mutex_t *mu) : mu_(mu) {
+    const int err = pthread_mutex_lock(mu_);
+    if (err != 0) {
+      ABSL_RAW_LOG(FATAL, "pthread_mutex_lock failed: %d", err);
+    }
+  }
+
+  PthreadMutexHolder(const PthreadMutexHolder &rhs) = delete;
+  PthreadMutexHolder &operator=(const PthreadMutexHolder &rhs) = delete;
+
+  ~PthreadMutexHolder() {
+    const int err = pthread_mutex_unlock(mu_);
+    if (err != 0) {
+      ABSL_RAW_LOG(FATAL, "pthread_mutex_unlock failed: %d", err);
+    }
+  }
+
+ private:
+  pthread_mutex_t *mu_;
+};
+
+Waiter::Waiter() {
+  const int err = pthread_mutex_init(&mu_, 0);
+  if (err != 0) {
+    ABSL_RAW_LOG(FATAL, "pthread_mutex_init failed: %d", err);
+  }
+
+  const int err2 = pthread_cond_init(&cv_, 0);
+  if (err2 != 0) {
+    ABSL_RAW_LOG(FATAL, "pthread_cond_init failed: %d", err2);
+  }
+
+  waiter_count_ = 0;
+  wakeup_count_ = 0;
+}
+
+Waiter::~Waiter() {
+  const int err = pthread_mutex_destroy(&mu_);
+  if (err != 0) {
+    ABSL_RAW_LOG(FATAL, "pthread_mutex_destroy failed: %d", err);
+  }
+
+  const int err2 = pthread_cond_destroy(&cv_);
+  if (err2 != 0) {
+    ABSL_RAW_LOG(FATAL, "pthread_cond_destroy failed: %d", err2);
+  }
+}
+
+bool Waiter::Wait(KernelTimeout t) {
+  struct timespec abs_timeout;
+  if (t.has_timeout()) {
+    abs_timeout = t.MakeAbsTimespec();
+  }
+
+  PthreadMutexHolder h(&mu_);
+  ++waiter_count_;
+  // Loop until we find a wakeup to consume or timeout.
+  // Note that, since the thread ticker is just reset, we don't need to check
+  // whether the thread is idle on the very first pass of the loop.
+  bool first_pass = true;
+  while (wakeup_count_ == 0) {
+    if (!first_pass) MaybeBecomeIdle();
+    // No wakeups available, time to wait.
+    if (!t.has_timeout()) {
+      const int err = pthread_cond_wait(&cv_, &mu_);
+      if (err != 0) {
+        ABSL_RAW_LOG(FATAL, "pthread_cond_wait failed: %d", err);
+      }
+    } else {
+      const int err = pthread_cond_timedwait(&cv_, &mu_, &abs_timeout);
+      if (err == ETIMEDOUT) {
+        --waiter_count_;
+        return false;
+      }
+      if (err != 0) {
+        ABSL_RAW_LOG(FATAL, "pthread_cond_timedwait failed: %d", err);
+      }
+    }
+    first_pass = false;
+  }
+  // Consume a wakeup and we're done.
+  --wakeup_count_;
+  --waiter_count_;
+  return true;
+}
+
+void Waiter::Post() {
+  PthreadMutexHolder h(&mu_);
+  ++wakeup_count_;
+  InternalCondVarPoke();
+}
+
+void Waiter::Poke() {
+  PthreadMutexHolder h(&mu_);
+  InternalCondVarPoke();
+}
+
+void Waiter::InternalCondVarPoke() {
+  if (waiter_count_ != 0) {
+    const int err = pthread_cond_signal(&cv_);
+    if (ABSL_PREDICT_FALSE(err != 0)) {
+      ABSL_RAW_LOG(FATAL, "pthread_cond_signal failed: %d", err);
+    }
+  }
+}
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_SEM
+
+Waiter::Waiter() {
+  if (sem_init(&sem_, 0, 0) != 0) {
+    ABSL_RAW_LOG(FATAL, "sem_init failed with errno %d\n", errno);
+  }
+  wakeups_.store(0, std::memory_order_relaxed);
+}
+
+Waiter::~Waiter() {
+  if (sem_destroy(&sem_) != 0) {
+    ABSL_RAW_LOG(FATAL, "sem_destroy failed with errno %d\n", errno);
+  }
+}
+
+bool Waiter::Wait(KernelTimeout t) {
+  struct timespec abs_timeout;
+  if (t.has_timeout()) {
+    abs_timeout = t.MakeAbsTimespec();
+  }
+
+  // Loop until we timeout or consume a wakeup.
+  // Note that, since the thread ticker is just reset, we don't need to check
+  // whether the thread is idle on the very first pass of the loop.
+  bool first_pass = true;
+  while (true) {
+    int x = wakeups_.load(std::memory_order_relaxed);
+    while (x != 0) {
+      if (!wakeups_.compare_exchange_weak(x, x - 1,
+                                          std::memory_order_acquire,
+                                          std::memory_order_relaxed)) {
+        continue;  // Raced with someone, retry.
+      }
+      // Successfully consumed a wakeup, we're done.
+      return true;
+    }
+
+    if (!first_pass) MaybeBecomeIdle();
+    // Nothing to consume, wait (looping on EINTR).
+    while (true) {
+      if (!t.has_timeout()) {
+        if (sem_wait(&sem_) == 0) break;
+        if (errno == EINTR) continue;
+        ABSL_RAW_LOG(FATAL, "sem_wait failed: %d", errno);
+      } else {
+        if (sem_timedwait(&sem_, &abs_timeout) == 0) break;
+        if (errno == EINTR) continue;
+        if (errno == ETIMEDOUT) return false;
+        ABSL_RAW_LOG(FATAL, "sem_timedwait failed: %d", errno);
+      }
+    }
+    first_pass = false;
+  }
+}
+
+void Waiter::Post() {
+  // Post a wakeup.
+  if (wakeups_.fetch_add(1, std::memory_order_release) == 0) {
+    // We incremented from 0, need to wake a potential waiter.
+    Poke();
+  }
+}
+
+void Waiter::Poke() {
+  if (sem_post(&sem_) != 0) {  // Wake any semaphore waiter.
+    ABSL_RAW_LOG(FATAL, "sem_post failed with errno %d\n", errno);
+  }
+}
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_WIN32
+
+class Waiter::WinHelper {
+ public:
+  static SRWLOCK *GetLock(Waiter *w) {
+    return reinterpret_cast<SRWLOCK *>(&w->mu_storage_);
+  }
+
+  static CONDITION_VARIABLE *GetCond(Waiter *w) {
+    return reinterpret_cast<CONDITION_VARIABLE *>(&w->cv_storage_);
+  }
+
+  static_assert(sizeof(SRWLOCK) == sizeof(void *),
+                "`mu_storage_` does not have the same size as SRWLOCK");
+  static_assert(alignof(SRWLOCK) == alignof(void *),
+                "`mu_storage_` does not have the same alignment as SRWLOCK");
+
+  static_assert(sizeof(CONDITION_VARIABLE) == sizeof(void *),
+                "`ABSL_CONDITION_VARIABLE_STORAGE` does not have the same size "
+                "as `CONDITION_VARIABLE`");
+  static_assert(
+      alignof(CONDITION_VARIABLE) == alignof(void *),
+      "`cv_storage_` does not have the same alignment as `CONDITION_VARIABLE`");
+
+  // The SRWLOCK and CONDITION_VARIABLE types must be trivially constructible
+  // and destructible because we never call their constructors or destructors.
+  static_assert(std::is_trivially_constructible<SRWLOCK>::value,
+                "The `SRWLOCK` type must be trivially constructible");
+  static_assert(
+      std::is_trivially_constructible<CONDITION_VARIABLE>::value,
+      "The `CONDITION_VARIABLE` type must be trivially constructible");
+  static_assert(std::is_trivially_destructible<SRWLOCK>::value,
+                "The `SRWLOCK` type must be trivially destructible");
+  static_assert(std::is_trivially_destructible<CONDITION_VARIABLE>::value,
+                "The `CONDITION_VARIABLE` type must be trivially destructible");
+};
+
+class LockHolder {
+ public:
+  explicit LockHolder(SRWLOCK* mu) : mu_(mu) {
+    AcquireSRWLockExclusive(mu_);
+  }
+
+  LockHolder(const LockHolder&) = delete;
+  LockHolder& operator=(const LockHolder&) = delete;
+
+  ~LockHolder() {
+    ReleaseSRWLockExclusive(mu_);
+  }
+
+ private:
+  SRWLOCK* mu_;
+};
+
+Waiter::Waiter() {
+  auto *mu = ::new (static_cast<void *>(&mu_storage_)) SRWLOCK;
+  auto *cv = ::new (static_cast<void *>(&cv_storage_)) CONDITION_VARIABLE;
+  InitializeSRWLock(mu);
+  InitializeConditionVariable(cv);
+  waiter_count_ = 0;
+  wakeup_count_ = 0;
+}
+
+// SRW locks and condition variables do not need to be explicitly destroyed.
+// https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-initializesrwlock
+// https://stackoverflow.com/questions/28975958/why-does-windows-have-no-deleteconditionvariable-function-to-go-together-with
+Waiter::~Waiter() = default;
+
+bool Waiter::Wait(KernelTimeout t) {
+  SRWLOCK *mu = WinHelper::GetLock(this);
+  CONDITION_VARIABLE *cv = WinHelper::GetCond(this);
+
+  LockHolder h(mu);
+  ++waiter_count_;
+
+  // Loop until we find a wakeup to consume or timeout.
+  // Note that, since the thread ticker is just reset, we don't need to check
+  // whether the thread is idle on the very first pass of the loop.
+  bool first_pass = true;
+  while (wakeup_count_ == 0) {
+    if (!first_pass) MaybeBecomeIdle();
+    // No wakeups available, time to wait.
+    if (!SleepConditionVariableSRW(cv, mu, t.InMillisecondsFromNow(), 0)) {
+      // GetLastError() returns a Win32 DWORD, but we assign to
+      // unsigned long to simplify the ABSL_RAW_LOG case below.  The uniform
+      // initialization guarantees this is not a narrowing conversion.
+      const unsigned long err{GetLastError()};  // NOLINT(runtime/int)
+      if (err == ERROR_TIMEOUT) {
+        --waiter_count_;
+        return false;
+      } else {
+        ABSL_RAW_LOG(FATAL, "SleepConditionVariableSRW failed: %lu", err);
+      }
+    }
+    first_pass = false;
+  }
+  // Consume a wakeup and we're done.
+  --wakeup_count_;
+  --waiter_count_;
+  return true;
+}
+
+void Waiter::Post() {
+  LockHolder h(WinHelper::GetLock(this));
+  ++wakeup_count_;
+  InternalCondVarPoke();
+}
+
+void Waiter::Poke() {
+  LockHolder h(WinHelper::GetLock(this));
+  InternalCondVarPoke();
+}
+
+void Waiter::InternalCondVarPoke() {
+  if (waiter_count_ != 0) {
+    WakeConditionVariable(WinHelper::GetCond(this));
+  }
+}
+
+#else
+#error Unknown ABSL_WAITER_MODE
+#endif
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.h b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.h
new file mode 100644
index 0000000..a6e6d4c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/internal/waiter.h	
@@ -0,0 +1,159 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_SYNCHRONIZATION_INTERNAL_WAITER_H_
+#define ABSL_SYNCHRONIZATION_INTERNAL_WAITER_H_
+
+#include "absl/base/config.h"
+
+#ifdef _WIN32
+#include <sdkddkver.h>
+#else
+#include <pthread.h>
+#endif
+
+#ifdef __linux__
+#include <linux/futex.h>
+#endif
+
+#ifdef ABSL_HAVE_SEMAPHORE_H
+#include <semaphore.h>
+#endif
+
+#include <atomic>
+#include <cstdint>
+
+#include "absl/base/internal/thread_identity.h"
+#include "absl/synchronization/internal/kernel_timeout.h"
+
+// May be chosen at compile time via -DABSL_FORCE_WAITER_MODE=<index>
+#define ABSL_WAITER_MODE_FUTEX 0
+#define ABSL_WAITER_MODE_SEM 1
+#define ABSL_WAITER_MODE_CONDVAR 2
+#define ABSL_WAITER_MODE_WIN32 3
+
+#if defined(ABSL_FORCE_WAITER_MODE)
+#define ABSL_WAITER_MODE ABSL_FORCE_WAITER_MODE
+#elif defined(_WIN32) && _WIN32_WINNT >= _WIN32_WINNT_VISTA
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_WIN32
+#elif defined(__BIONIC__)
+// Bionic supports all the futex operations we need even when some of the futex
+// definitions are missing.
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_FUTEX
+#elif defined(__linux__) && defined(FUTEX_CLOCK_REALTIME)
+// FUTEX_CLOCK_REALTIME requires Linux >= 2.6.28.
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_FUTEX
+#elif defined(ABSL_HAVE_SEMAPHORE_H)
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_SEM
+#else
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_CONDVAR
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace synchronization_internal {
+
+// Waiter is an OS-specific semaphore.
+class Waiter {
+ public:
+  // Prepare any data to track waits.
+  Waiter();
+
+  // Not copyable or movable
+  Waiter(const Waiter&) = delete;
+  Waiter& operator=(const Waiter&) = delete;
+
+  // Destroy any data to track waits.
+  ~Waiter();
+
+  // Blocks the calling thread until a matching call to `Post()` or
+  // `t` has passed. Returns `true` if woken (`Post()` called),
+  // `false` on timeout.
+  bool Wait(KernelTimeout t);
+
+  // Restart the caller of `Wait()` as with a normal semaphore.
+  void Post();
+
+  // If anyone is waiting, wake them up temporarily and cause them to
+  // call `MaybeBecomeIdle()`. They will then return to waiting for a
+  // `Post()` or timeout.
+  void Poke();
+
+  // Returns the Waiter associated with the identity.
+  static Waiter* GetWaiter(base_internal::ThreadIdentity* identity) {
+    static_assert(
+        sizeof(Waiter) <= sizeof(base_internal::ThreadIdentity::WaiterState),
+        "Insufficient space for Waiter");
+    return reinterpret_cast<Waiter*>(identity->waiter_state.data);
+  }
+
+  // How many periods to remain idle before releasing resources
+#ifndef THREAD_SANITIZER
+  static const int kIdlePeriods = 60;
+#else
+  // Memory consumption under ThreadSanitizer is a serious concern,
+  // so we release resources sooner. The value of 1 leads to 1 to 2 second
+  // delay before marking a thread as idle.
+  static const int kIdlePeriods = 1;
+#endif
+
+ private:
+#if ABSL_WAITER_MODE == ABSL_WAITER_MODE_FUTEX
+  // Futexes are defined by specification to be 32-bits.
+  // Thus std::atomic<int32_t> must be just an int32_t with lockfree methods.
+  std::atomic<int32_t> futex_;
+  static_assert(sizeof(int32_t) == sizeof(futex_), "Wrong size for futex");
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_CONDVAR
+  // REQUIRES: mu_ must be held.
+  void InternalCondVarPoke();
+
+  pthread_mutex_t mu_;
+  pthread_cond_t cv_;
+  int waiter_count_;
+  int wakeup_count_;  // Unclaimed wakeups.
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_SEM
+  sem_t sem_;
+  // This seems superfluous, but for Poke() we need to cause spurious
+  // wakeups on the semaphore. Hence we can't actually use the
+  // semaphore's count.
+  std::atomic<int> wakeups_;
+
+#elif ABSL_WAITER_MODE == ABSL_WAITER_MODE_WIN32
+  // WinHelper - Used to define utilities for accessing the lock and
+  // condition variable storage once the types are complete.
+  class WinHelper;
+
+  // REQUIRES: WinHelper::GetLock(this) must be held.
+  void InternalCondVarPoke();
+
+  // We can't include Windows.h in our headers, so we use aligned charachter
+  // buffers to define the storage of SRWLOCK and CONDITION_VARIABLE.
+  alignas(void*) unsigned char mu_storage_[sizeof(void*)];
+  alignas(void*) unsigned char cv_storage_[sizeof(void*)];
+  int waiter_count_;
+  int wakeup_count_;
+
+#else
+  #error Unknown ABSL_WAITER_MODE
+#endif
+};
+
+}  // namespace synchronization_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_SYNCHRONIZATION_INTERNAL_WAITER_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.cc
new file mode 100644
index 0000000..e0879b0
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.cc	
@@ -0,0 +1,2728 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/synchronization/mutex.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#ifdef ERROR
+#undef ERROR
+#endif
+#else
+#include <fcntl.h>
+#include <pthread.h>
+#include <sched.h>
+#include <sys/time.h>
+#endif
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <algorithm>
+#include <atomic>
+#include <cinttypes>
+#include <thread>  // NOLINT(build/c++11)
+
+#include "absl/base/attributes.h"
+#include "absl/base/config.h"
+#include "absl/base/dynamic_annotations.h"
+#include "absl/base/internal/atomic_hook.h"
+#include "absl/base/internal/cycleclock.h"
+#include "absl/base/internal/hide_ptr.h"
+#include "absl/base/internal/low_level_alloc.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/base/internal/spinlock.h"
+#include "absl/base/internal/sysinfo.h"
+#include "absl/base/internal/thread_identity.h"
+#include "absl/base/port.h"
+#include "absl/debugging/stacktrace.h"
+#include "absl/debugging/symbolize.h"
+#include "absl/synchronization/internal/graphcycles.h"
+#include "absl/synchronization/internal/per_thread_sem.h"
+#include "absl/time/time.h"
+
+using absl::base_internal::CurrentThreadIdentityIfPresent;
+using absl::base_internal::PerThreadSynch;
+using absl::base_internal::ThreadIdentity;
+using absl::synchronization_internal::GetOrCreateCurrentThreadIdentity;
+using absl::synchronization_internal::GraphCycles;
+using absl::synchronization_internal::GraphId;
+using absl::synchronization_internal::InvalidGraphId;
+using absl::synchronization_internal::KernelTimeout;
+using absl::synchronization_internal::PerThreadSem;
+
+extern "C" {
+ABSL_ATTRIBUTE_WEAK void AbslInternalMutexYield() { std::this_thread::yield(); }
+}  // extern "C"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+
+#if defined(THREAD_SANITIZER)
+constexpr OnDeadlockCycle kDeadlockDetectionDefault = OnDeadlockCycle::kIgnore;
+#else
+constexpr OnDeadlockCycle kDeadlockDetectionDefault = OnDeadlockCycle::kAbort;
+#endif
+
+ABSL_CONST_INIT std::atomic<OnDeadlockCycle> synch_deadlock_detection(
+    kDeadlockDetectionDefault);
+ABSL_CONST_INIT std::atomic<bool> synch_check_invariants(false);
+
+// ------------------------------------------ spinlock support
+
+// Make sure read-only globals used in the Mutex code are contained on the
+// same cacheline and cacheline aligned to eliminate any false sharing with
+// other globals from this and other modules.
+static struct MutexGlobals {
+  MutexGlobals() {
+    // Find machine-specific data needed for Delay() and
+    // TryAcquireWithSpinning(). This runs in the global constructor
+    // sequence, and before that zeros are safe values.
+    num_cpus = absl::base_internal::NumCPUs();
+    spinloop_iterations = num_cpus > 1 ? 1500 : 0;
+  }
+  int num_cpus;
+  int spinloop_iterations;
+  // Pad this struct to a full cacheline to prevent false sharing.
+  char padding[ABSL_CACHELINE_SIZE - 2 * sizeof(int)];
+} ABSL_CACHELINE_ALIGNED mutex_globals;
+static_assert(
+    sizeof(MutexGlobals) == ABSL_CACHELINE_SIZE,
+    "MutexGlobals must occupy an entire cacheline to prevent false sharing");
+
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
+    absl::base_internal::AtomicHook<void (*)(int64_t wait_cycles)>
+        submit_profile_data;
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES absl::base_internal::AtomicHook<void (*)(
+    const char *msg, const void *obj, int64_t wait_cycles)>
+    mutex_tracer;
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
+    absl::base_internal::AtomicHook<void (*)(const char *msg, const void *cv)>
+        cond_var_tracer;
+ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES absl::base_internal::AtomicHook<
+    bool (*)(const void *pc, char *out, int out_size)>
+    symbolizer(absl::Symbolize);
+
+}  // namespace
+
+static inline bool EvalConditionAnnotated(const Condition *cond, Mutex *mu,
+                                          bool locking, bool trylock,
+                                          bool read_lock);
+
+void RegisterMutexProfiler(void (*fn)(int64_t wait_timestamp)) {
+  submit_profile_data.Store(fn);
+}
+
+void RegisterMutexTracer(void (*fn)(const char *msg, const void *obj,
+                                    int64_t wait_cycles)) {
+  mutex_tracer.Store(fn);
+}
+
+void RegisterCondVarTracer(void (*fn)(const char *msg, const void *cv)) {
+  cond_var_tracer.Store(fn);
+}
+
+void RegisterSymbolizer(bool (*fn)(const void *pc, char *out, int out_size)) {
+  symbolizer.Store(fn);
+}
+
+// spinlock delay on iteration c.  Returns new c.
+namespace {
+  enum DelayMode { AGGRESSIVE, GENTLE };
+};
+static int Delay(int32_t c, DelayMode mode) {
+  // If this a uniprocessor, only yield/sleep.  Otherwise, if the mode is
+  // aggressive then spin many times before yielding.  If the mode is
+  // gentle then spin only a few times before yielding.  Aggressive spinning is
+  // used to ensure that an Unlock() call, which  must get the spin lock for
+  // any thread to make progress gets it without undue delay.
+  int32_t limit = (mutex_globals.num_cpus > 1) ?
+      ((mode == AGGRESSIVE) ? 5000 : 250) : 0;
+  if (c < limit) {
+    c++;               // spin
+  } else {
+    ABSL_TSAN_MUTEX_PRE_DIVERT(nullptr, 0);
+    if (c == limit) {  // yield once
+      AbslInternalMutexYield();
+      c++;
+    } else {           // then wait
+      absl::SleepFor(absl::Microseconds(10));
+      c = 0;
+    }
+    ABSL_TSAN_MUTEX_POST_DIVERT(nullptr, 0);
+  }
+  return (c);
+}
+
+// --------------------------Generic atomic ops
+// Ensure that "(*pv & bits) == bits" by doing an atomic update of "*pv" to
+// "*pv | bits" if necessary.  Wait until (*pv & wait_until_clear)==0
+// before making any change.
+// This is used to set flags in mutex and condition variable words.
+static void AtomicSetBits(std::atomic<intptr_t>* pv, intptr_t bits,
+                          intptr_t wait_until_clear) {
+  intptr_t v;
+  do {
+    v = pv->load(std::memory_order_relaxed);
+  } while ((v & bits) != bits &&
+           ((v & wait_until_clear) != 0 ||
+            !pv->compare_exchange_weak(v, v | bits,
+                                       std::memory_order_release,
+                                       std::memory_order_relaxed)));
+}
+
+// Ensure that "(*pv & bits) == 0" by doing an atomic update of "*pv" to
+// "*pv & ~bits" if necessary.  Wait until (*pv & wait_until_clear)==0
+// before making any change.
+// This is used to unset flags in mutex and condition variable words.
+static void AtomicClearBits(std::atomic<intptr_t>* pv, intptr_t bits,
+                            intptr_t wait_until_clear) {
+  intptr_t v;
+  do {
+    v = pv->load(std::memory_order_relaxed);
+  } while ((v & bits) != 0 &&
+           ((v & wait_until_clear) != 0 ||
+            !pv->compare_exchange_weak(v, v & ~bits,
+                                       std::memory_order_release,
+                                       std::memory_order_relaxed)));
+}
+
+//------------------------------------------------------------------
+
+// Data for doing deadlock detection.
+static absl::base_internal::SpinLock deadlock_graph_mu(
+    absl::base_internal::kLinkerInitialized);
+
+// graph used to detect deadlocks.
+static GraphCycles *deadlock_graph ABSL_GUARDED_BY(deadlock_graph_mu)
+    ABSL_PT_GUARDED_BY(deadlock_graph_mu);
+
+//------------------------------------------------------------------
+// An event mechanism for debugging mutex use.
+// It also allows mutexes to be given names for those who can't handle
+// addresses, and instead like to give their data structures names like
+// "Henry", "Fido", or "Rupert IV, King of Yondavia".
+
+namespace {  // to prevent name pollution
+enum {       // Mutex and CondVar events passed as "ev" to PostSynchEvent
+             // Mutex events
+  SYNCH_EV_TRYLOCK_SUCCESS,
+  SYNCH_EV_TRYLOCK_FAILED,
+  SYNCH_EV_READERTRYLOCK_SUCCESS,
+  SYNCH_EV_READERTRYLOCK_FAILED,
+  SYNCH_EV_LOCK,
+  SYNCH_EV_LOCK_RETURNING,
+  SYNCH_EV_READERLOCK,
+  SYNCH_EV_READERLOCK_RETURNING,
+  SYNCH_EV_UNLOCK,
+  SYNCH_EV_READERUNLOCK,
+
+  // CondVar events
+  SYNCH_EV_WAIT,
+  SYNCH_EV_WAIT_RETURNING,
+  SYNCH_EV_SIGNAL,
+  SYNCH_EV_SIGNALALL,
+};
+
+enum {                    // Event flags
+  SYNCH_F_R = 0x01,       // reader event
+  SYNCH_F_LCK = 0x02,     // PostSynchEvent called with mutex held
+  SYNCH_F_TRY = 0x04,     // TryLock or ReaderTryLock
+  SYNCH_F_UNLOCK = 0x08,  // Unlock or ReaderUnlock
+
+  SYNCH_F_LCK_W = SYNCH_F_LCK,
+  SYNCH_F_LCK_R = SYNCH_F_LCK | SYNCH_F_R,
+};
+}  // anonymous namespace
+
+// Properties of the events.
+static const struct {
+  int flags;
+  const char *msg;
+} event_properties[] = {
+    {SYNCH_F_LCK_W | SYNCH_F_TRY, "TryLock succeeded "},
+    {0, "TryLock failed "},
+    {SYNCH_F_LCK_R | SYNCH_F_TRY, "ReaderTryLock succeeded "},
+    {0, "ReaderTryLock failed "},
+    {0, "Lock blocking "},
+    {SYNCH_F_LCK_W, "Lock returning "},
+    {0, "ReaderLock blocking "},
+    {SYNCH_F_LCK_R, "ReaderLock returning "},
+    {SYNCH_F_LCK_W | SYNCH_F_UNLOCK, "Unlock "},
+    {SYNCH_F_LCK_R | SYNCH_F_UNLOCK, "ReaderUnlock "},
+    {0, "Wait on "},
+    {0, "Wait unblocked "},
+    {0, "Signal on "},
+    {0, "SignalAll on "},
+};
+
+static absl::base_internal::SpinLock synch_event_mu(
+    absl::base_internal::kLinkerInitialized);
+// protects synch_event
+
+// Hash table size; should be prime > 2.
+// Can't be too small, as it's used for deadlock detection information.
+static const uint32_t kNSynchEvent = 1031;
+
+static struct SynchEvent {     // this is a trivial hash table for the events
+  // struct is freed when refcount reaches 0
+  int refcount ABSL_GUARDED_BY(synch_event_mu);
+
+  // buckets have linear, 0-terminated  chains
+  SynchEvent *next ABSL_GUARDED_BY(synch_event_mu);
+
+  // Constant after initialization
+  uintptr_t masked_addr;  // object at this address is called "name"
+
+  // No explicit synchronization used.  Instead we assume that the
+  // client who enables/disables invariants/logging on a Mutex does so
+  // while the Mutex is not being concurrently accessed by others.
+  void (*invariant)(void *arg);  // called on each event
+  void *arg;            // first arg to (*invariant)()
+  bool log;             // logging turned on
+
+  // Constant after initialization
+  char name[1];         // actually longer---NUL-terminated std::string
+} * synch_event[kNSynchEvent] ABSL_GUARDED_BY(synch_event_mu);
+
+// Ensure that the object at "addr" has a SynchEvent struct associated with it,
+// set "bits" in the word there (waiting until lockbit is clear before doing
+// so), and return a refcounted reference that will remain valid until
+// UnrefSynchEvent() is called.  If a new SynchEvent is allocated,
+// the string name is copied into it.
+// When used with a mutex, the caller should also ensure that kMuEvent
+// is set in the mutex word, and similarly for condition variables and kCVEvent.
+static SynchEvent *EnsureSynchEvent(std::atomic<intptr_t> *addr,
+                                    const char *name, intptr_t bits,
+                                    intptr_t lockbit) {
+  uint32_t h = reinterpret_cast<intptr_t>(addr) % kNSynchEvent;
+  SynchEvent *e;
+  // first look for existing SynchEvent struct..
+  synch_event_mu.Lock();
+  for (e = synch_event[h];
+       e != nullptr && e->masked_addr != base_internal::HidePtr(addr);
+       e = e->next) {
+  }
+  if (e == nullptr) {  // no SynchEvent struct found; make one.
+    if (name == nullptr) {
+      name = "";
+    }
+    size_t l = strlen(name);
+    e = reinterpret_cast<SynchEvent *>(
+        base_internal::LowLevelAlloc::Alloc(sizeof(*e) + l));
+    e->refcount = 2;    // one for return value, one for linked list
+    e->masked_addr = base_internal::HidePtr(addr);
+    e->invariant = nullptr;
+    e->arg = nullptr;
+    e->log = false;
+    strcpy(e->name, name);  // NOLINT(runtime/printf)
+    e->next = synch_event[h];
+    AtomicSetBits(addr, bits, lockbit);
+    synch_event[h] = e;
+  } else {
+    e->refcount++;      // for return value
+  }
+  synch_event_mu.Unlock();
+  return e;
+}
+
+// Deallocate the SynchEvent *e, whose refcount has fallen to zero.
+static void DeleteSynchEvent(SynchEvent *e) {
+  base_internal::LowLevelAlloc::Free(e);
+}
+
+// Decrement the reference count of *e, or do nothing if e==null.
+static void UnrefSynchEvent(SynchEvent *e) {
+  if (e != nullptr) {
+    synch_event_mu.Lock();
+    bool del = (--(e->refcount) == 0);
+    synch_event_mu.Unlock();
+    if (del) {
+      DeleteSynchEvent(e);
+    }
+  }
+}
+
+// Forget the mapping from the object (Mutex or CondVar) at address addr
+// to SynchEvent object, and clear "bits" in its word (waiting until lockbit
+// is clear before doing so).
+static void ForgetSynchEvent(std::atomic<intptr_t> *addr, intptr_t bits,
+                             intptr_t lockbit) {
+  uint32_t h = reinterpret_cast<intptr_t>(addr) % kNSynchEvent;
+  SynchEvent **pe;
+  SynchEvent *e;
+  synch_event_mu.Lock();
+  for (pe = &synch_event[h];
+       (e = *pe) != nullptr && e->masked_addr != base_internal::HidePtr(addr);
+       pe = &e->next) {
+  }
+  bool del = false;
+  if (e != nullptr) {
+    *pe = e->next;
+    del = (--(e->refcount) == 0);
+  }
+  AtomicClearBits(addr, bits, lockbit);
+  synch_event_mu.Unlock();
+  if (del) {
+    DeleteSynchEvent(e);
+  }
+}
+
+// Return a refcounted reference to the SynchEvent of the object at address
+// "addr", if any.  The pointer returned is valid until the UnrefSynchEvent() is
+// called.
+static SynchEvent *GetSynchEvent(const void *addr) {
+  uint32_t h = reinterpret_cast<intptr_t>(addr) % kNSynchEvent;
+  SynchEvent *e;
+  synch_event_mu.Lock();
+  for (e = synch_event[h];
+       e != nullptr && e->masked_addr != base_internal::HidePtr(addr);
+       e = e->next) {
+  }
+  if (e != nullptr) {
+    e->refcount++;
+  }
+  synch_event_mu.Unlock();
+  return e;
+}
+
+// Called when an event "ev" occurs on a Mutex of CondVar "obj"
+// if event recording is on
+static void PostSynchEvent(void *obj, int ev) {
+  SynchEvent *e = GetSynchEvent(obj);
+  // logging is on if event recording is on and either there's no event struct,
+  // or it explicitly says to log
+  if (e == nullptr || e->log) {
+    void *pcs[40];
+    int n = absl::GetStackTrace(pcs, ABSL_ARRAYSIZE(pcs), 1);
+    // A buffer with enough space for the ASCII for all the PCs, even on a
+    // 64-bit machine.
+    char buffer[ABSL_ARRAYSIZE(pcs) * 24];
+    int pos = snprintf(buffer, sizeof (buffer), " @");
+    for (int i = 0; i != n; i++) {
+      pos += snprintf(&buffer[pos], sizeof (buffer) - pos, " %p", pcs[i]);
+    }
+    ABSL_RAW_LOG(INFO, "%s%p %s %s", event_properties[ev].msg, obj,
+                 (e == nullptr ? "" : e->name), buffer);
+  }
+  const int flags = event_properties[ev].flags;
+  if ((flags & SYNCH_F_LCK) != 0 && e != nullptr && e->invariant != nullptr) {
+    // Calling the invariant as is causes problems under ThreadSanitizer.
+    // We are currently inside of Mutex Lock/Unlock and are ignoring all
+    // memory accesses and synchronization. If the invariant transitively
+    // synchronizes something else and we ignore the synchronization, we will
+    // get false positive race reports later.
+    // Reuse EvalConditionAnnotated to properly call into user code.
+    struct local {
+      static bool pred(SynchEvent *ev) {
+        (*ev->invariant)(ev->arg);
+        return false;
+      }
+    };
+    Condition cond(&local::pred, e);
+    Mutex *mu = static_cast<Mutex *>(obj);
+    const bool locking = (flags & SYNCH_F_UNLOCK) == 0;
+    const bool trylock = (flags & SYNCH_F_TRY) != 0;
+    const bool read_lock = (flags & SYNCH_F_R) != 0;
+    EvalConditionAnnotated(&cond, mu, locking, trylock, read_lock);
+  }
+  UnrefSynchEvent(e);
+}
+
+//------------------------------------------------------------------
+
+// The SynchWaitParams struct encapsulates the way in which a thread is waiting:
+// whether it has a timeout, the condition, exclusive/shared, and whether a
+// condition variable wait has an associated Mutex (as opposed to another
+// type of lock).  It also points to the PerThreadSynch struct of its thread.
+// cv_word tells Enqueue() to enqueue on a CondVar using CondVarEnqueue().
+//
+// This structure is held on the stack rather than directly in
+// PerThreadSynch because a thread can be waiting on multiple Mutexes if,
+// while waiting on one Mutex, the implementation calls a client callback
+// (such as a Condition function) that acquires another Mutex. We don't
+// strictly need to allow this, but programmers become confused if we do not
+// allow them to use functions such a LOG() within Condition functions.  The
+// PerThreadSynch struct points at the most recent SynchWaitParams struct when
+// the thread is on a Mutex's waiter queue.
+struct SynchWaitParams {
+  SynchWaitParams(Mutex::MuHow how_arg, const Condition *cond_arg,
+                  KernelTimeout timeout_arg, Mutex *cvmu_arg,
+                  PerThreadSynch *thread_arg,
+                  std::atomic<intptr_t> *cv_word_arg)
+      : how(how_arg),
+        cond(cond_arg),
+        timeout(timeout_arg),
+        cvmu(cvmu_arg),
+        thread(thread_arg),
+        cv_word(cv_word_arg),
+        contention_start_cycles(base_internal::CycleClock::Now()) {}
+
+  const Mutex::MuHow how;  // How this thread needs to wait.
+  const Condition *cond;  // The condition that this thread is waiting for.
+                          // In Mutex, this field is set to zero if a timeout
+                          // expires.
+  KernelTimeout timeout;  // timeout expiry---absolute time
+                          // In Mutex, this field is set to zero if a timeout
+                          // expires.
+  Mutex *const cvmu;      // used for transfer from cond var to mutex
+  PerThreadSynch *const thread;  // thread that is waiting
+
+  // If not null, thread should be enqueued on the CondVar whose state
+  // word is cv_word instead of queueing normally on the Mutex.
+  std::atomic<intptr_t> *cv_word;
+
+  int64_t contention_start_cycles;  // Time (in cycles) when this thread started
+                                  // to contend for the mutex.
+};
+
+struct SynchLocksHeld {
+  int n;              // number of valid entries in locks[]
+  bool overflow;      // true iff we overflowed the array at some point
+  struct {
+    Mutex *mu;        // lock acquired
+    int32_t count;      // times acquired
+    GraphId id;       // deadlock_graph id of acquired lock
+  } locks[40];
+  // If a thread overfills the array during deadlock detection, we
+  // continue, discarding information as needed.  If no overflow has
+  // taken place, we can provide more error checking, such as
+  // detecting when a thread releases a lock it does not hold.
+};
+
+// A sentinel value in lists that is not 0.
+// A 0 value is used to mean "not on a list".
+static PerThreadSynch *const kPerThreadSynchNull =
+  reinterpret_cast<PerThreadSynch *>(1);
+
+static SynchLocksHeld *LocksHeldAlloc() {
+  SynchLocksHeld *ret = reinterpret_cast<SynchLocksHeld *>(
+      base_internal::LowLevelAlloc::Alloc(sizeof(SynchLocksHeld)));
+  ret->n = 0;
+  ret->overflow = false;
+  return ret;
+}
+
+// Return the PerThreadSynch-struct for this thread.
+static PerThreadSynch *Synch_GetPerThread() {
+  ThreadIdentity *identity = GetOrCreateCurrentThreadIdentity();
+  return &identity->per_thread_synch;
+}
+
+static PerThreadSynch *Synch_GetPerThreadAnnotated(Mutex *mu) {
+  if (mu) {
+    ABSL_TSAN_MUTEX_PRE_DIVERT(mu, 0);
+  }
+  PerThreadSynch *w = Synch_GetPerThread();
+  if (mu) {
+    ABSL_TSAN_MUTEX_POST_DIVERT(mu, 0);
+  }
+  return w;
+}
+
+static SynchLocksHeld *Synch_GetAllLocks() {
+  PerThreadSynch *s = Synch_GetPerThread();
+  if (s->all_locks == nullptr) {
+    s->all_locks = LocksHeldAlloc();  // Freed by ReclaimThreadIdentity.
+  }
+  return s->all_locks;
+}
+
+// Post on "w"'s associated PerThreadSem.
+inline void Mutex::IncrementSynchSem(Mutex *mu, PerThreadSynch *w) {
+  if (mu) {
+    ABSL_TSAN_MUTEX_PRE_DIVERT(mu, 0);
+  }
+  PerThreadSem::Post(w->thread_identity());
+  if (mu) {
+    ABSL_TSAN_MUTEX_POST_DIVERT(mu, 0);
+  }
+}
+
+// Wait on "w"'s associated PerThreadSem; returns false if timeout expired.
+bool Mutex::DecrementSynchSem(Mutex *mu, PerThreadSynch *w, KernelTimeout t) {
+  if (mu) {
+    ABSL_TSAN_MUTEX_PRE_DIVERT(mu, 0);
+  }
+  assert(w == Synch_GetPerThread());
+  static_cast<void>(w);
+  bool res = PerThreadSem::Wait(t);
+  if (mu) {
+    ABSL_TSAN_MUTEX_POST_DIVERT(mu, 0);
+  }
+  return res;
+}
+
+// We're in a fatal signal handler that hopes to use Mutex and to get
+// lucky by not deadlocking.  We try to improve its chances of success
+// by effectively disabling some of the consistency checks.  This will
+// prevent certain ABSL_RAW_CHECK() statements from being triggered when
+// re-rentry is detected.  The ABSL_RAW_CHECK() statements are those in the
+// Mutex code checking that the "waitp" field has not been reused.
+void Mutex::InternalAttemptToUseMutexInFatalSignalHandler() {
+  // Fix the per-thread state only if it exists.
+  ThreadIdentity *identity = CurrentThreadIdentityIfPresent();
+  if (identity != nullptr) {
+    identity->per_thread_synch.suppress_fatal_errors = true;
+  }
+  // Don't do deadlock detection when we are already failing.
+  synch_deadlock_detection.store(OnDeadlockCycle::kIgnore,
+                                 std::memory_order_release);
+}
+
+// --------------------------time support
+
+// Return the current time plus the timeout.  Use the same clock as
+// PerThreadSem::Wait() for consistency.  Unfortunately, we don't have
+// such a choice when a deadline is given directly.
+static absl::Time DeadlineFromTimeout(absl::Duration timeout) {
+#ifndef _WIN32
+  struct timeval tv;
+  gettimeofday(&tv, nullptr);
+  return absl::TimeFromTimeval(tv) + timeout;
+#else
+  return absl::Now() + timeout;
+#endif
+}
+
+// --------------------------Mutexes
+
+// In the layout below, the msb of the bottom byte is currently unused.  Also,
+// the following constraints were considered in choosing the layout:
+//  o Both the debug allocator's "uninitialized" and "freed" patterns (0xab and
+//    0xcd) are illegal: reader and writer lock both held.
+//  o kMuWriter and kMuEvent should exceed kMuDesig and kMuWait, to enable the
+//    bit-twiddling trick in Mutex::Unlock().
+//  o kMuWriter / kMuReader == kMuWrWait / kMuWait,
+//    to enable the bit-twiddling trick in CheckForMutexCorruption().
+static const intptr_t kMuReader      = 0x0001L;  // a reader holds the lock
+static const intptr_t kMuDesig       = 0x0002L;  // there's a designated waker
+static const intptr_t kMuWait        = 0x0004L;  // threads are waiting
+static const intptr_t kMuWriter      = 0x0008L;  // a writer holds the lock
+static const intptr_t kMuEvent       = 0x0010L;  // record this mutex's events
+// INVARIANT1:  there's a thread that was blocked on the mutex, is
+// no longer, yet has not yet acquired the mutex.  If there's a
+// designated waker, all threads can avoid taking the slow path in
+// unlock because the designated waker will subsequently acquire
+// the lock and wake someone.  To maintain INVARIANT1 the bit is
+// set when a thread is unblocked(INV1a), and threads that were
+// unblocked reset the bit when they either acquire or re-block
+// (INV1b).
+static const intptr_t kMuWrWait      = 0x0020L;  // runnable writer is waiting
+                                                 // for a reader
+static const intptr_t kMuSpin        = 0x0040L;  // spinlock protects wait list
+static const intptr_t kMuLow         = 0x00ffL;  // mask all mutex bits
+static const intptr_t kMuHigh        = ~kMuLow;  // mask pointer/reader count
+
+// Hack to make constant values available to gdb pretty printer
+enum {
+  kGdbMuSpin = kMuSpin,
+  kGdbMuEvent = kMuEvent,
+  kGdbMuWait = kMuWait,
+  kGdbMuWriter = kMuWriter,
+  kGdbMuDesig = kMuDesig,
+  kGdbMuWrWait = kMuWrWait,
+  kGdbMuReader = kMuReader,
+  kGdbMuLow = kMuLow,
+};
+
+// kMuWrWait implies kMuWait.
+// kMuReader and kMuWriter are mutually exclusive.
+// If kMuReader is zero, there are no readers.
+// Otherwise, if kMuWait is zero, the high order bits contain a count of the
+// number of readers.  Otherwise, the reader count is held in
+// PerThreadSynch::readers of the most recently queued waiter, again in the
+// bits above kMuLow.
+static const intptr_t kMuOne = 0x0100;  // a count of one reader
+
+// flags passed to Enqueue and LockSlow{,WithTimeout,Loop}
+static const int kMuHasBlocked = 0x01;  // already blocked (MUST == 1)
+static const int kMuIsCond = 0x02;      // conditional waiter (CV or Condition)
+
+static_assert(PerThreadSynch::kAlignment > kMuLow,
+              "PerThreadSynch::kAlignment must be greater than kMuLow");
+
+// This struct contains various bitmasks to be used in
+// acquiring and releasing a mutex in a particular mode.
+struct MuHowS {
+  // if all the bits in fast_need_zero are zero, the lock can be acquired by
+  // adding fast_add and oring fast_or.  The bit kMuDesig should be reset iff
+  // this is the designated waker.
+  intptr_t fast_need_zero;
+  intptr_t fast_or;
+  intptr_t fast_add;
+
+  intptr_t slow_need_zero;  // fast_need_zero with events (e.g. logging)
+
+  intptr_t slow_inc_need_zero;  // if all the bits in slow_inc_need_zero are
+                                // zero a reader can acquire a read share by
+                                // setting the reader bit and incrementing
+                                // the reader count (in last waiter since
+                                // we're now slow-path).  kMuWrWait be may
+                                // be ignored if we already waited once.
+};
+
+static const MuHowS kSharedS = {
+    // shared or read lock
+    kMuWriter | kMuWait | kMuEvent,   // fast_need_zero
+    kMuReader,                        // fast_or
+    kMuOne,                           // fast_add
+    kMuWriter | kMuWait,              // slow_need_zero
+    kMuSpin | kMuWriter | kMuWrWait,  // slow_inc_need_zero
+};
+static const MuHowS kExclusiveS = {
+    // exclusive or write lock
+    kMuWriter | kMuReader | kMuEvent,  // fast_need_zero
+    kMuWriter,                         // fast_or
+    0,                                 // fast_add
+    kMuWriter | kMuReader,             // slow_need_zero
+    ~static_cast<intptr_t>(0),         // slow_inc_need_zero
+};
+static const Mutex::MuHow kShared = &kSharedS;        // shared lock
+static const Mutex::MuHow kExclusive = &kExclusiveS;  // exclusive lock
+
+#ifdef NDEBUG
+static constexpr bool kDebugMode = false;
+#else
+static constexpr bool kDebugMode = true;
+#endif
+
+#ifdef THREAD_SANITIZER
+static unsigned TsanFlags(Mutex::MuHow how) {
+  return how == kShared ? __tsan_mutex_read_lock : 0;
+}
+#endif
+
+static bool DebugOnlyIsExiting() {
+  return false;
+}
+
+Mutex::~Mutex() {
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  if ((v & kMuEvent) != 0 && !DebugOnlyIsExiting()) {
+    ForgetSynchEvent(&this->mu_, kMuEvent, kMuSpin);
+  }
+  if (kDebugMode) {
+    this->ForgetDeadlockInfo();
+  }
+  ABSL_TSAN_MUTEX_DESTROY(this, __tsan_mutex_not_static);
+}
+
+void Mutex::EnableDebugLog(const char *name) {
+  SynchEvent *e = EnsureSynchEvent(&this->mu_, name, kMuEvent, kMuSpin);
+  e->log = true;
+  UnrefSynchEvent(e);
+}
+
+void EnableMutexInvariantDebugging(bool enabled) {
+  synch_check_invariants.store(enabled, std::memory_order_release);
+}
+
+void Mutex::EnableInvariantDebugging(void (*invariant)(void *),
+                                     void *arg) {
+  if (synch_check_invariants.load(std::memory_order_acquire) &&
+      invariant != nullptr) {
+    SynchEvent *e = EnsureSynchEvent(&this->mu_, nullptr, kMuEvent, kMuSpin);
+    e->invariant = invariant;
+    e->arg = arg;
+    UnrefSynchEvent(e);
+  }
+}
+
+void SetMutexDeadlockDetectionMode(OnDeadlockCycle mode) {
+  synch_deadlock_detection.store(mode, std::memory_order_release);
+}
+
+// Return true iff threads x and y are waiting on the same condition for the
+// same type of lock.  Requires that x and y be waiting on the same Mutex
+// queue.
+static bool MuSameCondition(PerThreadSynch *x, PerThreadSynch *y) {
+  return x->waitp->how == y->waitp->how &&
+         Condition::GuaranteedEqual(x->waitp->cond, y->waitp->cond);
+}
+
+// Given the contents of a mutex word containing a PerThreadSynch pointer,
+// return the pointer.
+static inline PerThreadSynch *GetPerThreadSynch(intptr_t v) {
+  return reinterpret_cast<PerThreadSynch *>(v & kMuHigh);
+}
+
+// The next several routines maintain the per-thread next and skip fields
+// used in the Mutex waiter queue.
+// The queue is a circular singly-linked list, of which the "head" is the
+// last element, and head->next if the first element.
+// The skip field has the invariant:
+//   For thread x, x->skip is one of:
+//     - invalid (iff x is not in a Mutex wait queue),
+//     - null, or
+//     - a pointer to a distinct thread waiting later in the same Mutex queue
+//       such that all threads in [x, x->skip] have the same condition and
+//       lock type (MuSameCondition() is true for all pairs in [x, x->skip]).
+// In addition, if x->skip is  valid, (x->may_skip || x->skip == null)
+//
+// By the spec of MuSameCondition(), it is not necessary when removing the
+// first runnable thread y from the front a Mutex queue to adjust the skip
+// field of another thread x because if x->skip==y, x->skip must (have) become
+// invalid before y is removed.  The function TryRemove can remove a specified
+// thread from an arbitrary position in the queue whether runnable or not, so
+// it fixes up skip fields that would otherwise be left dangling.
+// The statement
+//     if (x->may_skip && MuSameCondition(x, x->next)) { x->skip = x->next; }
+// maintains the invariant provided x is not the last waiter in a Mutex queue
+// The statement
+//          if (x->skip != null) { x->skip = x->skip->skip; }
+// maintains the invariant.
+
+// Returns the last thread y in a mutex waiter queue such that all threads in
+// [x, y] inclusive share the same condition.  Sets skip fields of some threads
+// in that range to optimize future evaluation of Skip() on x values in
+// the range.  Requires thread x is in a mutex waiter queue.
+// The locking is unusual.  Skip() is called under these conditions:
+//   - spinlock is held in call from Enqueue(), with maybe_unlocking == false
+//   - Mutex is held in call from UnlockSlow() by last unlocker, with
+//     maybe_unlocking == true
+//   - both Mutex and spinlock are held in call from DequeueAllWakeable() (from
+//     UnlockSlow()) and TryRemove()
+// These cases are mutually exclusive, so Skip() never runs concurrently
+// with itself on the same Mutex.   The skip chain is used in these other places
+// that cannot occur concurrently:
+//   - FixSkip() (from TryRemove()) - spinlock and Mutex are held)
+//   - Dequeue() (with spinlock and Mutex held)
+//   - UnlockSlow() (with spinlock and Mutex held)
+// A more complex case is Enqueue()
+//   - Enqueue() (with spinlock held and maybe_unlocking == false)
+//               This is the first case in which Skip is called, above.
+//   - Enqueue() (without spinlock held; but queue is empty and being freshly
+//                formed)
+//   - Enqueue() (with spinlock held and maybe_unlocking == true)
+// The first case has mutual exclusion, and the second isolation through
+// working on an otherwise unreachable data structure.
+// In the last case, Enqueue() is required to change no skip/next pointers
+// except those in the added node and the former "head" node.  This implies
+// that the new node is added after head, and so must be the new head or the
+// new front of the queue.
+static PerThreadSynch *Skip(PerThreadSynch *x) {
+  PerThreadSynch *x0 = nullptr;
+  PerThreadSynch *x1 = x;
+  PerThreadSynch *x2 = x->skip;
+  if (x2 != nullptr) {
+    // Each iteration attempts to advance sequence (x0,x1,x2) to next sequence
+    // such that   x1 == x0->skip && x2 == x1->skip
+    while ((x0 = x1, x1 = x2, x2 = x2->skip) != nullptr) {
+      x0->skip = x2;      // short-circuit skip from x0 to x2
+    }
+    x->skip = x1;         // short-circuit skip from x to result
+  }
+  return x1;
+}
+
+// "ancestor" appears before "to_be_removed" in the same Mutex waiter queue.
+// The latter is going to be removed out of order, because of a timeout.
+// Check whether "ancestor" has a skip field pointing to "to_be_removed",
+// and fix it if it does.
+static void FixSkip(PerThreadSynch *ancestor, PerThreadSynch *to_be_removed) {
+  if (ancestor->skip == to_be_removed) {  // ancestor->skip left dangling
+    if (to_be_removed->skip != nullptr) {
+      ancestor->skip = to_be_removed->skip;  // can skip past to_be_removed
+    } else if (ancestor->next != to_be_removed) {  // they are not adjacent
+      ancestor->skip = ancestor->next;             // can skip one past ancestor
+    } else {
+      ancestor->skip = nullptr;  // can't skip at all
+    }
+  }
+}
+
+static void CondVarEnqueue(SynchWaitParams *waitp);
+
+// Enqueue thread "waitp->thread" on a waiter queue.
+// Called with mutex spinlock held if head != nullptr
+// If head==nullptr and waitp->cv_word==nullptr, then Enqueue() is
+// idempotent; it alters no state associated with the existing (empty)
+// queue.
+//
+// If waitp->cv_word == nullptr, queue the thread at either the front or
+// the end (according to its priority) of the circular mutex waiter queue whose
+// head is "head", and return the new head.  mu is the previous mutex state,
+// which contains the reader count (perhaps adjusted for the operation in
+// progress) if the list was empty and a read lock held, and the holder hint if
+// the list was empty and a write lock held.  (flags & kMuIsCond) indicates
+// whether this thread was transferred from a CondVar or is waiting for a
+// non-trivial condition.  In this case, Enqueue() never returns nullptr
+//
+// If waitp->cv_word != nullptr, CondVarEnqueue() is called, and "head" is
+// returned. This mechanism is used by CondVar to queue a thread on the
+// condition variable queue instead of the mutex queue in implementing Wait().
+// In this case, Enqueue() can return nullptr (if head==nullptr).
+static PerThreadSynch *Enqueue(PerThreadSynch *head,
+                               SynchWaitParams *waitp, intptr_t mu, int flags) {
+  // If we have been given a cv_word, call CondVarEnqueue() and return
+  // the previous head of the Mutex waiter queue.
+  if (waitp->cv_word != nullptr) {
+    CondVarEnqueue(waitp);
+    return head;
+  }
+
+  PerThreadSynch *s = waitp->thread;
+  ABSL_RAW_CHECK(
+      s->waitp == nullptr ||    // normal case
+          s->waitp == waitp ||  // Fer()---transfer from condition variable
+          s->suppress_fatal_errors,
+      "detected illegal recursion into Mutex code");
+  s->waitp = waitp;
+  s->skip = nullptr;             // maintain skip invariant (see above)
+  s->may_skip = true;            // always true on entering queue
+  s->wake = false;               // not being woken
+  s->cond_waiter = ((flags & kMuIsCond) != 0);
+  if (head == nullptr) {         // s is the only waiter
+    s->next = s;                 // it's the only entry in the cycle
+    s->readers = mu;             // reader count is from mu word
+    s->maybe_unlocking = false;  // no one is searching an empty list
+    head = s;                    // s is new head
+  } else {
+    PerThreadSynch *enqueue_after = nullptr;  // we'll put s after this element
+#ifdef ABSL_HAVE_PTHREAD_GETSCHEDPARAM
+    int64_t now_cycles = base_internal::CycleClock::Now();
+    if (s->next_priority_read_cycles < now_cycles) {
+      // Every so often, update our idea of the thread's priority.
+      // pthread_getschedparam() is 5% of the block/wakeup time;
+      // base_internal::CycleClock::Now() is 0.5%.
+      int policy;
+      struct sched_param param;
+      const int err = pthread_getschedparam(pthread_self(), &policy, &param);
+      if (err != 0) {
+        ABSL_RAW_LOG(ERROR, "pthread_getschedparam failed: %d", err);
+      } else {
+        s->priority = param.sched_priority;
+        s->next_priority_read_cycles =
+            now_cycles +
+            static_cast<int64_t>(base_internal::CycleClock::Frequency());
+      }
+    }
+    if (s->priority > head->priority) {  // s's priority is above head's
+      // try to put s in priority-fifo order, or failing that at the front.
+      if (!head->maybe_unlocking) {
+        // No unlocker can be scanning the queue, so we can insert between
+        // skip-chains, and within a skip-chain if it has the same condition as
+        // s.  We insert in priority-fifo order, examining the end of every
+        // skip-chain, plus every element with the same condition as s.
+        PerThreadSynch *advance_to = head;    // next value of enqueue_after
+        PerThreadSynch *cur;                  // successor of enqueue_after
+        do {
+          enqueue_after = advance_to;
+          cur = enqueue_after->next;  // this advance ensures progress
+          advance_to = Skip(cur);   // normally, advance to end of skip chain
+                                    // (side-effect: optimizes skip chain)
+          if (advance_to != cur && s->priority > advance_to->priority &&
+              MuSameCondition(s, cur)) {
+            // but this skip chain is not a singleton, s has higher priority
+            // than its tail and has the same condition as the chain,
+            // so we can insert within the skip-chain
+            advance_to = cur;         // advance by just one
+          }
+        } while (s->priority <= advance_to->priority);
+              // termination guaranteed because s->priority > head->priority
+              // and head is the end of a skip chain
+      } else if (waitp->how == kExclusive &&
+                 Condition::GuaranteedEqual(waitp->cond, nullptr)) {
+        // An unlocker could be scanning the queue, but we know it will recheck
+        // the queue front for writers that have no condition, which is what s
+        // is, so an insert at front is safe.
+        enqueue_after = head;       // add after head, at front
+      }
+    }
+#endif
+    if (enqueue_after != nullptr) {
+      s->next = enqueue_after->next;
+      enqueue_after->next = s;
+
+      // enqueue_after can be: head, Skip(...), or cur.
+      // The first two imply enqueue_after->skip == nullptr, and
+      // the last is used only if MuSameCondition(s, cur).
+      // We require this because clearing enqueue_after->skip
+      // is impossible; enqueue_after's predecessors might also
+      // incorrectly skip over s if we were to allow other
+      // insertion points.
+      ABSL_RAW_CHECK(
+          enqueue_after->skip == nullptr || MuSameCondition(enqueue_after, s),
+          "Mutex Enqueue failure");
+
+      if (enqueue_after != head && enqueue_after->may_skip &&
+          MuSameCondition(enqueue_after, enqueue_after->next)) {
+        // enqueue_after can skip to its new successor, s
+        enqueue_after->skip = enqueue_after->next;
+      }
+      if (MuSameCondition(s, s->next)) {  // s->may_skip is known to be true
+        s->skip = s->next;                // s may skip to its successor
+      }
+    } else {   // enqueue not done any other way, so
+               // we're inserting s at the back
+      // s will become new head; copy data from head into it
+      s->next = head->next;        // add s after head
+      head->next = s;
+      s->readers = head->readers;  // reader count is from previous head
+      s->maybe_unlocking = head->maybe_unlocking;  // same for unlock hint
+      if (head->may_skip && MuSameCondition(head, s)) {
+        // head now has successor; may skip
+        head->skip = s;
+      }
+      head = s;  // s is new head
+    }
+  }
+  s->state.store(PerThreadSynch::kQueued, std::memory_order_relaxed);
+  return head;
+}
+
+// Dequeue the successor pw->next of thread pw from the Mutex waiter queue
+// whose last element is head.  The new head element is returned, or null
+// if the list is made empty.
+// Dequeue is called with both spinlock and Mutex held.
+static PerThreadSynch *Dequeue(PerThreadSynch *head, PerThreadSynch *pw) {
+  PerThreadSynch *w = pw->next;
+  pw->next = w->next;         // snip w out of list
+  if (head == w) {            // we removed the head
+    head = (pw == w) ? nullptr : pw;  // either emptied list, or pw is new head
+  } else if (pw != head && MuSameCondition(pw, pw->next)) {
+    // pw can skip to its new successor
+    if (pw->next->skip !=
+        nullptr) {  // either skip to its successors skip target
+      pw->skip = pw->next->skip;
+    } else {                   // or to pw's successor
+      pw->skip = pw->next;
+    }
+  }
+  return head;
+}
+
+// Traverse the elements [ pw->next, h] of the circular list whose last element
+// is head.
+// Remove all elements with wake==true and place them in the
+// singly-linked list wake_list in the order found.   Assumes that
+// there is only one such element if the element has how == kExclusive.
+// Return the new head.
+static PerThreadSynch *DequeueAllWakeable(PerThreadSynch *head,
+                                          PerThreadSynch *pw,
+                                          PerThreadSynch **wake_tail) {
+  PerThreadSynch *orig_h = head;
+  PerThreadSynch *w = pw->next;
+  bool skipped = false;
+  do {
+    if (w->wake) {                    // remove this element
+      ABSL_RAW_CHECK(pw->skip == nullptr, "bad skip in DequeueAllWakeable");
+      // we're removing pw's successor so either pw->skip is zero or we should
+      // already have removed pw since if pw->skip!=null, pw has the same
+      // condition as w.
+      head = Dequeue(head, pw);
+      w->next = *wake_tail;           // keep list terminated
+      *wake_tail = w;                 // add w to wake_list;
+      wake_tail = &w->next;           // next addition to end
+      if (w->waitp->how == kExclusive) {  // wake at most 1 writer
+        break;
+      }
+    } else {                // not waking this one; skip
+      pw = Skip(w);       // skip as much as possible
+      skipped = true;
+    }
+    w = pw->next;
+    // We want to stop processing after we've considered the original head,
+    // orig_h.  We can't test for w==orig_h in the loop because w may skip over
+    // it; we are guaranteed only that w's predecessor will not skip over
+    // orig_h.  When we've considered orig_h, either we've processed it and
+    // removed it (so orig_h != head), or we considered it and skipped it (so
+    // skipped==true && pw == head because skipping from head always skips by
+    // just one, leaving pw pointing at head).  So we want to
+    // continue the loop with the negation of that expression.
+  } while (orig_h == head && (pw != head || !skipped));
+  return head;
+}
+
+// Try to remove thread s from the list of waiters on this mutex.
+// Does nothing if s is not on the waiter list.
+void Mutex::TryRemove(PerThreadSynch *s) {
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  // acquire spinlock & lock
+  if ((v & (kMuWait | kMuSpin | kMuWriter | kMuReader)) == kMuWait &&
+      mu_.compare_exchange_strong(v, v | kMuSpin | kMuWriter,
+                                  std::memory_order_acquire,
+                                  std::memory_order_relaxed)) {
+    PerThreadSynch *h = GetPerThreadSynch(v);
+    if (h != nullptr) {
+      PerThreadSynch *pw = h;   // pw is w's predecessor
+      PerThreadSynch *w;
+      if ((w = pw->next) != s) {  // search for thread,
+        do {                      // processing at least one element
+          if (!MuSameCondition(s, w)) {  // seeking different condition
+            pw = Skip(w);                // so skip all that won't match
+            // we don't have to worry about dangling skip fields
+            // in the threads we skipped; none can point to s
+            // because their condition differs from s
+          } else {          // seeking same condition
+            FixSkip(w, s);  // fix up any skip pointer from w to s
+            pw = w;
+          }
+          // don't search further if we found the thread, or we're about to
+          // process the first thread again.
+        } while ((w = pw->next) != s && pw != h);
+      }
+      if (w == s) {                 // found thread; remove it
+        // pw->skip may be non-zero here; the loop above ensured that
+        // no ancestor of s can skip to s, so removal is safe anyway.
+        h = Dequeue(h, pw);
+        s->next = nullptr;
+        s->state.store(PerThreadSynch::kAvailable, std::memory_order_release);
+      }
+    }
+    intptr_t nv;
+    do {                        // release spinlock and lock
+      v = mu_.load(std::memory_order_relaxed);
+      nv = v & (kMuDesig | kMuEvent);
+      if (h != nullptr) {
+        nv |= kMuWait | reinterpret_cast<intptr_t>(h);
+        h->readers = 0;            // we hold writer lock
+        h->maybe_unlocking = false;  // finished unlocking
+      }
+    } while (!mu_.compare_exchange_weak(v, nv,
+                                        std::memory_order_release,
+                                        std::memory_order_relaxed));
+  }
+}
+
+// Wait until thread "s", which must be the current thread, is removed from the
+// this mutex's waiter queue.  If "s->waitp->timeout" has a timeout, wake up
+// if the wait extends past the absolute time specified, even if "s" is still
+// on the mutex queue.  In this case, remove "s" from the queue and return
+// true, otherwise return false.
+ABSL_XRAY_LOG_ARGS(1) void Mutex::Block(PerThreadSynch *s) {
+  while (s->state.load(std::memory_order_acquire) == PerThreadSynch::kQueued) {
+    if (!DecrementSynchSem(this, s, s->waitp->timeout)) {
+      // After a timeout, we go into a spin loop until we remove ourselves
+      // from the queue, or someone else removes us.  We can't be sure to be
+      // able to remove ourselves in a single lock acquisition because this
+      // mutex may be held, and the holder has the right to read the centre
+      // of the waiter queue without holding the spinlock.
+      this->TryRemove(s);
+      int c = 0;
+      while (s->next != nullptr) {
+        c = Delay(c, GENTLE);
+        this->TryRemove(s);
+      }
+      if (kDebugMode) {
+        // This ensures that we test the case that TryRemove() is called when s
+        // is not on the queue.
+        this->TryRemove(s);
+      }
+      s->waitp->timeout = KernelTimeout::Never();      // timeout is satisfied
+      s->waitp->cond = nullptr;  // condition no longer relevant for wakeups
+    }
+  }
+  ABSL_RAW_CHECK(s->waitp != nullptr || s->suppress_fatal_errors,
+                 "detected illegal recursion in Mutex code");
+  s->waitp = nullptr;
+}
+
+// Wake thread w, and return the next thread in the list.
+PerThreadSynch *Mutex::Wakeup(PerThreadSynch *w) {
+  PerThreadSynch *next = w->next;
+  w->next = nullptr;
+  w->state.store(PerThreadSynch::kAvailable, std::memory_order_release);
+  IncrementSynchSem(this, w);
+
+  return next;
+}
+
+static GraphId GetGraphIdLocked(Mutex *mu)
+    ABSL_EXCLUSIVE_LOCKS_REQUIRED(deadlock_graph_mu) {
+  if (!deadlock_graph) {  // (re)create the deadlock graph.
+    deadlock_graph =
+        new (base_internal::LowLevelAlloc::Alloc(sizeof(*deadlock_graph)))
+            GraphCycles;
+  }
+  return deadlock_graph->GetId(mu);
+}
+
+static GraphId GetGraphId(Mutex *mu) ABSL_LOCKS_EXCLUDED(deadlock_graph_mu) {
+  deadlock_graph_mu.Lock();
+  GraphId id = GetGraphIdLocked(mu);
+  deadlock_graph_mu.Unlock();
+  return id;
+}
+
+// Record a lock acquisition.  This is used in debug mode for deadlock
+// detection.  The held_locks pointer points to the relevant data
+// structure for each case.
+static void LockEnter(Mutex* mu, GraphId id, SynchLocksHeld *held_locks) {
+  int n = held_locks->n;
+  int i = 0;
+  while (i != n && held_locks->locks[i].id != id) {
+    i++;
+  }
+  if (i == n) {
+    if (n == ABSL_ARRAYSIZE(held_locks->locks)) {
+      held_locks->overflow = true;  // lost some data
+    } else {                        // we have room for lock
+      held_locks->locks[i].mu = mu;
+      held_locks->locks[i].count = 1;
+      held_locks->locks[i].id = id;
+      held_locks->n = n + 1;
+    }
+  } else {
+    held_locks->locks[i].count++;
+  }
+}
+
+// Record a lock release.  Each call to LockEnter(mu, id, x) should be
+// eventually followed by a call to LockLeave(mu, id, x) by the same thread.
+// It does not process the event if is not needed when deadlock detection is
+// disabled.
+static void LockLeave(Mutex* mu, GraphId id, SynchLocksHeld *held_locks) {
+  int n = held_locks->n;
+  int i = 0;
+  while (i != n && held_locks->locks[i].id != id) {
+    i++;
+  }
+  if (i == n) {
+    if (!held_locks->overflow) {
+      // The deadlock id may have been reassigned after ForgetDeadlockInfo,
+      // but in that case mu should still be present.
+      i = 0;
+      while (i != n && held_locks->locks[i].mu != mu) {
+        i++;
+      }
+      if (i == n) {  // mu missing means releasing unheld lock
+        SynchEvent *mu_events = GetSynchEvent(mu);
+        ABSL_RAW_LOG(FATAL,
+                     "thread releasing lock it does not hold: %p %s; "
+                     ,
+                     static_cast<void *>(mu),
+                     mu_events == nullptr ? "" : mu_events->name);
+      }
+    }
+  } else if (held_locks->locks[i].count == 1) {
+    held_locks->n = n - 1;
+    held_locks->locks[i] = held_locks->locks[n - 1];
+    held_locks->locks[n - 1].id = InvalidGraphId();
+    held_locks->locks[n - 1].mu =
+        nullptr;  // clear mu to please the leak detector.
+  } else {
+    assert(held_locks->locks[i].count > 0);
+    held_locks->locks[i].count--;
+  }
+}
+
+// Call LockEnter() if in debug mode and deadlock detection is enabled.
+static inline void DebugOnlyLockEnter(Mutex *mu) {
+  if (kDebugMode) {
+    if (synch_deadlock_detection.load(std::memory_order_acquire) !=
+        OnDeadlockCycle::kIgnore) {
+      LockEnter(mu, GetGraphId(mu), Synch_GetAllLocks());
+    }
+  }
+}
+
+// Call LockEnter() if in debug mode and deadlock detection is enabled.
+static inline void DebugOnlyLockEnter(Mutex *mu, GraphId id) {
+  if (kDebugMode) {
+    if (synch_deadlock_detection.load(std::memory_order_acquire) !=
+        OnDeadlockCycle::kIgnore) {
+      LockEnter(mu, id, Synch_GetAllLocks());
+    }
+  }
+}
+
+// Call LockLeave() if in debug mode and deadlock detection is enabled.
+static inline void DebugOnlyLockLeave(Mutex *mu) {
+  if (kDebugMode) {
+    if (synch_deadlock_detection.load(std::memory_order_acquire) !=
+        OnDeadlockCycle::kIgnore) {
+      LockLeave(mu, GetGraphId(mu), Synch_GetAllLocks());
+    }
+  }
+}
+
+static char *StackString(void **pcs, int n, char *buf, int maxlen,
+                         bool symbolize) {
+  static const int kSymLen = 200;
+  char sym[kSymLen];
+  int len = 0;
+  for (int i = 0; i != n; i++) {
+    if (symbolize) {
+      if (!symbolizer(pcs[i], sym, kSymLen)) {
+        sym[0] = '\0';
+      }
+      snprintf(buf + len, maxlen - len, "%s\t@ %p %s\n",
+               (i == 0 ? "\n" : ""),
+               pcs[i], sym);
+    } else {
+      snprintf(buf + len, maxlen - len, " %p", pcs[i]);
+    }
+    len += strlen(&buf[len]);
+  }
+  return buf;
+}
+
+static char *CurrentStackString(char *buf, int maxlen, bool symbolize) {
+  void *pcs[40];
+  return StackString(pcs, absl::GetStackTrace(pcs, ABSL_ARRAYSIZE(pcs), 2), buf,
+                     maxlen, symbolize);
+}
+
+namespace {
+enum { kMaxDeadlockPathLen = 10 };  // maximum length of a deadlock cycle;
+                                    // a path this long would be remarkable
+// Buffers required to report a deadlock.
+// We do not allocate them on stack to avoid large stack frame.
+struct DeadlockReportBuffers {
+  char buf[6100];
+  GraphId path[kMaxDeadlockPathLen];
+};
+
+struct ScopedDeadlockReportBuffers {
+  ScopedDeadlockReportBuffers() {
+    b = reinterpret_cast<DeadlockReportBuffers *>(
+        base_internal::LowLevelAlloc::Alloc(sizeof(*b)));
+  }
+  ~ScopedDeadlockReportBuffers() { base_internal::LowLevelAlloc::Free(b); }
+  DeadlockReportBuffers *b;
+};
+
+// Helper to pass to GraphCycles::UpdateStackTrace.
+int GetStack(void** stack, int max_depth) {
+  return absl::GetStackTrace(stack, max_depth, 3);
+}
+}  // anonymous namespace
+
+// Called in debug mode when a thread is about to acquire a lock in a way that
+// may block.
+static GraphId DeadlockCheck(Mutex *mu) {
+  if (synch_deadlock_detection.load(std::memory_order_acquire) ==
+      OnDeadlockCycle::kIgnore) {
+    return InvalidGraphId();
+  }
+
+  SynchLocksHeld *all_locks = Synch_GetAllLocks();
+
+  absl::base_internal::SpinLockHolder lock(&deadlock_graph_mu);
+  const GraphId mu_id = GetGraphIdLocked(mu);
+
+  if (all_locks->n == 0) {
+    // There are no other locks held. Return now so that we don't need to
+    // call GetSynchEvent(). This way we do not record the stack trace
+    // for this Mutex. It's ok, since if this Mutex is involved in a deadlock,
+    // it can't always be the first lock acquired by a thread.
+    return mu_id;
+  }
+
+  // We prefer to keep stack traces that show a thread holding and acquiring
+  // as many locks as possible.  This increases the chances that a given edge
+  // in the acquires-before graph will be represented in the stack traces
+  // recorded for the locks.
+  deadlock_graph->UpdateStackTrace(mu_id, all_locks->n + 1, GetStack);
+
+  // For each other mutex already held by this thread:
+  for (int i = 0; i != all_locks->n; i++) {
+    const GraphId other_node_id = all_locks->locks[i].id;
+    const Mutex *other =
+        static_cast<const Mutex *>(deadlock_graph->Ptr(other_node_id));
+    if (other == nullptr) {
+      // Ignore stale lock
+      continue;
+    }
+
+    // Add the acquired-before edge to the graph.
+    if (!deadlock_graph->InsertEdge(other_node_id, mu_id)) {
+      ScopedDeadlockReportBuffers scoped_buffers;
+      DeadlockReportBuffers *b = scoped_buffers.b;
+      static int number_of_reported_deadlocks = 0;
+      number_of_reported_deadlocks++;
+      // Symbolize only 2 first deadlock report to avoid huge slowdowns.
+      bool symbolize = number_of_reported_deadlocks <= 2;
+      ABSL_RAW_LOG(ERROR, "Potential Mutex deadlock: %s",
+                   CurrentStackString(b->buf, sizeof (b->buf), symbolize));
+      int len = 0;
+      for (int j = 0; j != all_locks->n; j++) {
+        void* pr = deadlock_graph->Ptr(all_locks->locks[j].id);
+        if (pr != nullptr) {
+          snprintf(b->buf + len, sizeof (b->buf) - len, " %p", pr);
+          len += static_cast<int>(strlen(&b->buf[len]));
+        }
+      }
+      ABSL_RAW_LOG(ERROR, "Acquiring %p    Mutexes held: %s",
+                   static_cast<void *>(mu), b->buf);
+      ABSL_RAW_LOG(ERROR, "Cycle: ");
+      int path_len = deadlock_graph->FindPath(
+          mu_id, other_node_id, ABSL_ARRAYSIZE(b->path), b->path);
+      for (int j = 0; j != path_len; j++) {
+        GraphId id = b->path[j];
+        Mutex *path_mu = static_cast<Mutex *>(deadlock_graph->Ptr(id));
+        if (path_mu == nullptr) continue;
+        void** stack;
+        int depth = deadlock_graph->GetStackTrace(id, &stack);
+        snprintf(b->buf, sizeof(b->buf),
+                 "mutex@%p stack: ", static_cast<void *>(path_mu));
+        StackString(stack, depth, b->buf + strlen(b->buf),
+                    static_cast<int>(sizeof(b->buf) - strlen(b->buf)),
+                    symbolize);
+        ABSL_RAW_LOG(ERROR, "%s", b->buf);
+      }
+      if (synch_deadlock_detection.load(std::memory_order_acquire) ==
+          OnDeadlockCycle::kAbort) {
+        deadlock_graph_mu.Unlock();  // avoid deadlock in fatal sighandler
+        ABSL_RAW_LOG(FATAL, "dying due to potential deadlock");
+        return mu_id;
+      }
+      break;   // report at most one potential deadlock per acquisition
+    }
+  }
+
+  return mu_id;
+}
+
+// Invoke DeadlockCheck() iff we're in debug mode and
+// deadlock checking has been enabled.
+static inline GraphId DebugOnlyDeadlockCheck(Mutex *mu) {
+  if (kDebugMode && synch_deadlock_detection.load(std::memory_order_acquire) !=
+                        OnDeadlockCycle::kIgnore) {
+    return DeadlockCheck(mu);
+  } else {
+    return InvalidGraphId();
+  }
+}
+
+void Mutex::ForgetDeadlockInfo() {
+  if (kDebugMode && synch_deadlock_detection.load(std::memory_order_acquire) !=
+                        OnDeadlockCycle::kIgnore) {
+    deadlock_graph_mu.Lock();
+    if (deadlock_graph != nullptr) {
+      deadlock_graph->RemoveNode(this);
+    }
+    deadlock_graph_mu.Unlock();
+  }
+}
+
+void Mutex::AssertNotHeld() const {
+  // We have the data to allow this check only if in debug mode and deadlock
+  // detection is enabled.
+  if (kDebugMode &&
+      (mu_.load(std::memory_order_relaxed) & (kMuWriter | kMuReader)) != 0 &&
+      synch_deadlock_detection.load(std::memory_order_acquire) !=
+          OnDeadlockCycle::kIgnore) {
+    GraphId id = GetGraphId(const_cast<Mutex *>(this));
+    SynchLocksHeld *locks = Synch_GetAllLocks();
+    for (int i = 0; i != locks->n; i++) {
+      if (locks->locks[i].id == id) {
+        SynchEvent *mu_events = GetSynchEvent(this);
+        ABSL_RAW_LOG(FATAL, "thread should not hold mutex %p %s",
+                     static_cast<const void *>(this),
+                     (mu_events == nullptr ? "" : mu_events->name));
+      }
+    }
+  }
+}
+
+// Attempt to acquire *mu, and return whether successful.  The implementation
+// may spin for a short while if the lock cannot be acquired immediately.
+static bool TryAcquireWithSpinning(std::atomic<intptr_t>* mu) {
+  int c = mutex_globals.spinloop_iterations;
+  int result = -1;  // result of operation:  0=false, 1=true, -1=unknown
+
+  do {  // do/while somewhat faster on AMD
+    intptr_t v = mu->load(std::memory_order_relaxed);
+    if ((v & (kMuReader|kMuEvent)) != 0) {  // a reader or tracing -> give up
+      result = 0;
+    } else if (((v & kMuWriter) == 0) &&  // no holder -> try to acquire
+               mu->compare_exchange_strong(v, kMuWriter | v,
+                                           std::memory_order_acquire,
+                                           std::memory_order_relaxed)) {
+      result = 1;
+    }
+  } while (result == -1 && --c > 0);
+  return result == 1;
+}
+
+ABSL_XRAY_LOG_ARGS(1) void Mutex::Lock() {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, 0);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  // try fast acquire, then spin loop
+  if ((v & (kMuWriter | kMuReader | kMuEvent)) != 0 ||
+      !mu_.compare_exchange_strong(v, kMuWriter | v,
+                                   std::memory_order_acquire,
+                                   std::memory_order_relaxed)) {
+    // try spin acquire, then slow loop
+    if (!TryAcquireWithSpinning(&this->mu_)) {
+      this->LockSlow(kExclusive, nullptr, 0);
+    }
+  }
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0);
+}
+
+ABSL_XRAY_LOG_ARGS(1) void Mutex::ReaderLock() {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_read_lock);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  // try fast acquire, then slow loop
+  if ((v & (kMuWriter | kMuWait | kMuEvent)) != 0 ||
+      !mu_.compare_exchange_strong(v, (kMuReader | v) + kMuOne,
+                                   std::memory_order_acquire,
+                                   std::memory_order_relaxed)) {
+    this->LockSlow(kShared, nullptr, 0);
+  }
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, __tsan_mutex_read_lock, 0);
+}
+
+void Mutex::LockWhen(const Condition &cond) {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, 0);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  this->LockSlow(kExclusive, &cond, 0);
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0);
+}
+
+bool Mutex::LockWhenWithTimeout(const Condition &cond, absl::Duration timeout) {
+  return LockWhenWithDeadline(cond, DeadlineFromTimeout(timeout));
+}
+
+bool Mutex::LockWhenWithDeadline(const Condition &cond, absl::Time deadline) {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, 0);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  bool res = LockSlowWithDeadline(kExclusive, &cond,
+                                  KernelTimeout(deadline), 0);
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0);
+  return res;
+}
+
+void Mutex::ReaderLockWhen(const Condition &cond) {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_read_lock);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  this->LockSlow(kShared, &cond, 0);
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, __tsan_mutex_read_lock, 0);
+}
+
+bool Mutex::ReaderLockWhenWithTimeout(const Condition &cond,
+                                      absl::Duration timeout) {
+  return ReaderLockWhenWithDeadline(cond, DeadlineFromTimeout(timeout));
+}
+
+bool Mutex::ReaderLockWhenWithDeadline(const Condition &cond,
+                                       absl::Time deadline) {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_read_lock);
+  GraphId id = DebugOnlyDeadlockCheck(this);
+  bool res = LockSlowWithDeadline(kShared, &cond, KernelTimeout(deadline), 0);
+  DebugOnlyLockEnter(this, id);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, __tsan_mutex_read_lock, 0);
+  return res;
+}
+
+void Mutex::Await(const Condition &cond) {
+  if (cond.Eval()) {    // condition already true; nothing to do
+    if (kDebugMode) {
+      this->AssertReaderHeld();
+    }
+  } else {              // normal case
+    ABSL_RAW_CHECK(this->AwaitCommon(cond, KernelTimeout::Never()),
+                   "condition untrue on return from Await");
+  }
+}
+
+bool Mutex::AwaitWithTimeout(const Condition &cond, absl::Duration timeout) {
+  return AwaitWithDeadline(cond, DeadlineFromTimeout(timeout));
+}
+
+bool Mutex::AwaitWithDeadline(const Condition &cond, absl::Time deadline) {
+  if (cond.Eval()) {      // condition already true; nothing to do
+    if (kDebugMode) {
+      this->AssertReaderHeld();
+    }
+    return true;
+  }
+
+  KernelTimeout t{deadline};
+  bool res = this->AwaitCommon(cond, t);
+  ABSL_RAW_CHECK(res || t.has_timeout(),
+                 "condition untrue on return from Await");
+  return res;
+}
+
+bool Mutex::AwaitCommon(const Condition &cond, KernelTimeout t) {
+  this->AssertReaderHeld();
+  MuHow how =
+      (mu_.load(std::memory_order_relaxed) & kMuWriter) ? kExclusive : kShared;
+  ABSL_TSAN_MUTEX_PRE_UNLOCK(this, TsanFlags(how));
+  SynchWaitParams waitp(
+      how, &cond, t, nullptr /*no cvmu*/, Synch_GetPerThreadAnnotated(this),
+      nullptr /*no cv_word*/);
+  int flags = kMuHasBlocked;
+  if (!Condition::GuaranteedEqual(&cond, nullptr)) {
+    flags |= kMuIsCond;
+  }
+  this->UnlockSlow(&waitp);
+  this->Block(waitp.thread);
+  ABSL_TSAN_MUTEX_POST_UNLOCK(this, TsanFlags(how));
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, TsanFlags(how));
+  this->LockSlowLoop(&waitp, flags);
+  bool res = waitp.cond != nullptr ||  // => cond known true from LockSlowLoop
+             EvalConditionAnnotated(&cond, this, true, false, how == kShared);
+  ABSL_TSAN_MUTEX_POST_LOCK(this, TsanFlags(how), 0);
+  return res;
+}
+
+ABSL_XRAY_LOG_ARGS(1) bool Mutex::TryLock() {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_try_lock);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  if ((v & (kMuWriter | kMuReader | kMuEvent)) == 0 &&  // try fast acquire
+      mu_.compare_exchange_strong(v, kMuWriter | v,
+                                  std::memory_order_acquire,
+                                  std::memory_order_relaxed)) {
+    DebugOnlyLockEnter(this);
+    ABSL_TSAN_MUTEX_POST_LOCK(this, __tsan_mutex_try_lock, 0);
+    return true;
+  }
+  if ((v & kMuEvent) != 0) {              // we're recording events
+    if ((v & kExclusive->slow_need_zero) == 0 &&  // try fast acquire
+        mu_.compare_exchange_strong(
+            v, (kExclusive->fast_or | v) + kExclusive->fast_add,
+            std::memory_order_acquire, std::memory_order_relaxed)) {
+      DebugOnlyLockEnter(this);
+      PostSynchEvent(this, SYNCH_EV_TRYLOCK_SUCCESS);
+      ABSL_TSAN_MUTEX_POST_LOCK(this, __tsan_mutex_try_lock, 0);
+      return true;
+    } else {
+      PostSynchEvent(this, SYNCH_EV_TRYLOCK_FAILED);
+    }
+  }
+  ABSL_TSAN_MUTEX_POST_LOCK(
+      this, __tsan_mutex_try_lock | __tsan_mutex_try_lock_failed, 0);
+  return false;
+}
+
+ABSL_XRAY_LOG_ARGS(1) bool Mutex::ReaderTryLock() {
+  ABSL_TSAN_MUTEX_PRE_LOCK(this,
+                           __tsan_mutex_read_lock | __tsan_mutex_try_lock);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  // The while-loops (here and below) iterate only if the mutex word keeps
+  // changing (typically because the reader count changes) under the CAS.  We
+  // limit the number of attempts to avoid having to think about livelock.
+  int loop_limit = 5;
+  while ((v & (kMuWriter|kMuWait|kMuEvent)) == 0 && loop_limit != 0) {
+    if (mu_.compare_exchange_strong(v, (kMuReader | v) + kMuOne,
+                                    std::memory_order_acquire,
+                                    std::memory_order_relaxed)) {
+      DebugOnlyLockEnter(this);
+      ABSL_TSAN_MUTEX_POST_LOCK(
+          this, __tsan_mutex_read_lock | __tsan_mutex_try_lock, 0);
+      return true;
+    }
+    loop_limit--;
+    v = mu_.load(std::memory_order_relaxed);
+  }
+  if ((v & kMuEvent) != 0) {   // we're recording events
+    loop_limit = 5;
+    while ((v & kShared->slow_need_zero) == 0 && loop_limit != 0) {
+      if (mu_.compare_exchange_strong(v, (kMuReader | v) + kMuOne,
+                                      std::memory_order_acquire,
+                                      std::memory_order_relaxed)) {
+        DebugOnlyLockEnter(this);
+        PostSynchEvent(this, SYNCH_EV_READERTRYLOCK_SUCCESS);
+        ABSL_TSAN_MUTEX_POST_LOCK(
+            this, __tsan_mutex_read_lock | __tsan_mutex_try_lock, 0);
+        return true;
+      }
+      loop_limit--;
+      v = mu_.load(std::memory_order_relaxed);
+    }
+    if ((v & kMuEvent) != 0) {
+      PostSynchEvent(this, SYNCH_EV_READERTRYLOCK_FAILED);
+    }
+  }
+  ABSL_TSAN_MUTEX_POST_LOCK(this,
+                            __tsan_mutex_read_lock | __tsan_mutex_try_lock |
+                                __tsan_mutex_try_lock_failed,
+                            0);
+  return false;
+}
+
+ABSL_XRAY_LOG_ARGS(1) void Mutex::Unlock() {
+  ABSL_TSAN_MUTEX_PRE_UNLOCK(this, 0);
+  DebugOnlyLockLeave(this);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+
+  if (kDebugMode && ((v & (kMuWriter | kMuReader)) != kMuWriter)) {
+    ABSL_RAW_LOG(FATAL, "Mutex unlocked when destroyed or not locked: v=0x%x",
+                 static_cast<unsigned>(v));
+  }
+
+  // should_try_cas is whether we'll try a compare-and-swap immediately.
+  // NOTE: optimized out when kDebugMode is false.
+  bool should_try_cas = ((v & (kMuEvent | kMuWriter)) == kMuWriter &&
+                          (v & (kMuWait | kMuDesig)) != kMuWait);
+  // But, we can use an alternate computation of it, that compilers
+  // currently don't find on their own.  When that changes, this function
+  // can be simplified.
+  intptr_t x = (v ^ (kMuWriter | kMuWait)) & (kMuWriter | kMuEvent);
+  intptr_t y = (v ^ (kMuWriter | kMuWait)) & (kMuWait | kMuDesig);
+  // Claim: "x == 0 && y > 0" is equal to should_try_cas.
+  // Also, because kMuWriter and kMuEvent exceed kMuDesig and kMuWait,
+  // all possible non-zero values for x exceed all possible values for y.
+  // Therefore, (x == 0 && y > 0) == (x < y).
+  if (kDebugMode && should_try_cas != (x < y)) {
+    // We would usually use PRIdPTR here, but is not correctly implemented
+    // within the android toolchain.
+    ABSL_RAW_LOG(FATAL, "internal logic error %llx %llx %llx\n",
+                 static_cast<long long>(v), static_cast<long long>(x),
+                 static_cast<long long>(y));
+  }
+  if (x < y &&
+      mu_.compare_exchange_strong(v, v & ~(kMuWrWait | kMuWriter),
+                                  std::memory_order_release,
+                                  std::memory_order_relaxed)) {
+    // fast writer release (writer with no waiters or with designated waker)
+  } else {
+    this->UnlockSlow(nullptr /*no waitp*/);  // take slow path
+  }
+  ABSL_TSAN_MUTEX_POST_UNLOCK(this, 0);
+}
+
+// Requires v to represent a reader-locked state.
+static bool ExactlyOneReader(intptr_t v) {
+  assert((v & (kMuWriter|kMuReader)) == kMuReader);
+  assert((v & kMuHigh) != 0);
+  // The more straightforward "(v & kMuHigh) == kMuOne" also works, but
+  // on some architectures the following generates slightly smaller code.
+  // It may be faster too.
+  constexpr intptr_t kMuMultipleWaitersMask = kMuHigh ^ kMuOne;
+  return (v & kMuMultipleWaitersMask) == 0;
+}
+
+ABSL_XRAY_LOG_ARGS(1) void Mutex::ReaderUnlock() {
+  ABSL_TSAN_MUTEX_PRE_UNLOCK(this, __tsan_mutex_read_lock);
+  DebugOnlyLockLeave(this);
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  assert((v & (kMuWriter|kMuReader)) == kMuReader);
+  if ((v & (kMuReader|kMuWait|kMuEvent)) == kMuReader) {
+    // fast reader release (reader with no waiters)
+    intptr_t clear = ExactlyOneReader(v) ? kMuReader|kMuOne : kMuOne;
+    if (mu_.compare_exchange_strong(v, v - clear,
+                                    std::memory_order_release,
+                                    std::memory_order_relaxed)) {
+      ABSL_TSAN_MUTEX_POST_UNLOCK(this, __tsan_mutex_read_lock);
+      return;
+    }
+  }
+  this->UnlockSlow(nullptr /*no waitp*/);  // take slow path
+  ABSL_TSAN_MUTEX_POST_UNLOCK(this, __tsan_mutex_read_lock);
+}
+
+// The zap_desig_waker bitmask is used to clear the designated waker flag in
+// the mutex if this thread has blocked, and therefore may be the designated
+// waker.
+static const intptr_t zap_desig_waker[] = {
+    ~static_cast<intptr_t>(0),  // not blocked
+    ~static_cast<intptr_t>(
+        kMuDesig)  // blocked; turn off the designated waker bit
+};
+
+// The ignore_waiting_writers bitmask is used to ignore the existence
+// of waiting writers if a reader that has already blocked once
+// wakes up.
+static const intptr_t ignore_waiting_writers[] = {
+    ~static_cast<intptr_t>(0),  // not blocked
+    ~static_cast<intptr_t>(
+        kMuWrWait)  // blocked; pretend there are no waiting writers
+};
+
+// Internal version of LockWhen().  See LockSlowWithDeadline()
+void Mutex::LockSlow(MuHow how, const Condition *cond, int flags) {
+  ABSL_RAW_CHECK(
+      this->LockSlowWithDeadline(how, cond, KernelTimeout::Never(), flags),
+      "condition untrue on return from LockSlow");
+}
+
+// Compute cond->Eval() and tell race detectors that we do it under mutex mu.
+static inline bool EvalConditionAnnotated(const Condition *cond, Mutex *mu,
+                                          bool locking, bool trylock,
+                                          bool read_lock) {
+  // Delicate annotation dance.
+  // We are currently inside of read/write lock/unlock operation.
+  // All memory accesses are ignored inside of mutex operations + for unlock
+  // operation tsan considers that we've already released the mutex.
+  bool res = false;
+#ifdef THREAD_SANITIZER
+  const int flags = read_lock ? __tsan_mutex_read_lock : 0;
+  const int tryflags = flags | (trylock ? __tsan_mutex_try_lock : 0);
+#endif
+  if (locking) {
+    // For lock we pretend that we have finished the operation,
+    // evaluate the predicate, then unlock the mutex and start locking it again
+    // to match the annotation at the end of outer lock operation.
+    // Note: we can't simply do POST_LOCK, Eval, PRE_LOCK, because then tsan
+    // will think the lock acquisition is recursive which will trigger
+    // deadlock detector.
+    ABSL_TSAN_MUTEX_POST_LOCK(mu, tryflags, 0);
+    res = cond->Eval();
+    // There is no "try" version of Unlock, so use flags instead of tryflags.
+    ABSL_TSAN_MUTEX_PRE_UNLOCK(mu, flags);
+    ABSL_TSAN_MUTEX_POST_UNLOCK(mu, flags);
+    ABSL_TSAN_MUTEX_PRE_LOCK(mu, tryflags);
+  } else {
+    // Similarly, for unlock we pretend that we have unlocked the mutex,
+    // lock the mutex, evaluate the predicate, and start unlocking it again
+    // to match the annotation at the end of outer unlock operation.
+    ABSL_TSAN_MUTEX_POST_UNLOCK(mu, flags);
+    ABSL_TSAN_MUTEX_PRE_LOCK(mu, flags);
+    ABSL_TSAN_MUTEX_POST_LOCK(mu, flags, 0);
+    res = cond->Eval();
+    ABSL_TSAN_MUTEX_PRE_UNLOCK(mu, flags);
+  }
+  // Prevent unused param warnings in non-TSAN builds.
+  static_cast<void>(mu);
+  static_cast<void>(trylock);
+  static_cast<void>(read_lock);
+  return res;
+}
+
+// Compute cond->Eval() hiding it from race detectors.
+// We are hiding it because inside of UnlockSlow we can evaluate a predicate
+// that was just added by a concurrent Lock operation; Lock adds the predicate
+// to the internal Mutex list without actually acquiring the Mutex
+// (it only acquires the internal spinlock, which is rightfully invisible for
+// tsan). As the result there is no tsan-visible synchronization between the
+// addition and this thread. So if we would enable race detection here,
+// it would race with the predicate initialization.
+static inline bool EvalConditionIgnored(Mutex *mu, const Condition *cond) {
+  // Memory accesses are already ignored inside of lock/unlock operations,
+  // but synchronization operations are also ignored. When we evaluate the
+  // predicate we must ignore only memory accesses but not synchronization,
+  // because missed synchronization can lead to false reports later.
+  // So we "divert" (which un-ignores both memory accesses and synchronization)
+  // and then separately turn on ignores of memory accesses.
+  ABSL_TSAN_MUTEX_PRE_DIVERT(mu, 0);
+  ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN();
+  bool res = cond->Eval();
+  ANNOTATE_IGNORE_READS_AND_WRITES_END();
+  ABSL_TSAN_MUTEX_POST_DIVERT(mu, 0);
+  static_cast<void>(mu);  // Prevent unused param warning in non-TSAN builds.
+  return res;
+}
+
+// Internal equivalent of *LockWhenWithDeadline(), where
+//   "t" represents the absolute timeout; !t.has_timeout() means "forever".
+//   "how" is "kShared" (for ReaderLockWhen) or "kExclusive" (for LockWhen)
+// In flags, bits are ored together:
+// - kMuHasBlocked indicates that the client has already blocked on the call so
+//   the designated waker bit must be cleared and waiting writers should not
+//   obstruct this call
+// - kMuIsCond indicates that this is a conditional acquire (condition variable,
+//   Await,  LockWhen) so contention profiling should be suppressed.
+bool Mutex::LockSlowWithDeadline(MuHow how, const Condition *cond,
+                                 KernelTimeout t, int flags) {
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  bool unlock = false;
+  if ((v & how->fast_need_zero) == 0 &&  // try fast acquire
+      mu_.compare_exchange_strong(
+          v, (how->fast_or | (v & zap_desig_waker[flags & kMuHasBlocked])) +
+                 how->fast_add,
+          std::memory_order_acquire, std::memory_order_relaxed)) {
+    if (cond == nullptr ||
+        EvalConditionAnnotated(cond, this, true, false, how == kShared)) {
+      return true;
+    }
+    unlock = true;
+  }
+  SynchWaitParams waitp(
+      how, cond, t, nullptr /*no cvmu*/, Synch_GetPerThreadAnnotated(this),
+      nullptr /*no cv_word*/);
+  if (!Condition::GuaranteedEqual(cond, nullptr)) {
+    flags |= kMuIsCond;
+  }
+  if (unlock) {
+    this->UnlockSlow(&waitp);
+    this->Block(waitp.thread);
+    flags |= kMuHasBlocked;
+  }
+  this->LockSlowLoop(&waitp, flags);
+  return waitp.cond != nullptr ||  // => cond known true from LockSlowLoop
+         cond == nullptr ||
+         EvalConditionAnnotated(cond, this, true, false, how == kShared);
+}
+
+// RAW_CHECK_FMT() takes a condition, a printf-style format string, and
+// the printf-style argument list.   The format string must be a literal.
+// Arguments after the first are not evaluated unless the condition is true.
+#define RAW_CHECK_FMT(cond, ...)                                   \
+  do {                                                             \
+    if (ABSL_PREDICT_FALSE(!(cond))) {                             \
+      ABSL_RAW_LOG(FATAL, "Check " #cond " failed: " __VA_ARGS__); \
+    }                                                              \
+  } while (0)
+
+static void CheckForMutexCorruption(intptr_t v, const char* label) {
+  // Test for either of two situations that should not occur in v:
+  //   kMuWriter and kMuReader
+  //   kMuWrWait and !kMuWait
+  const uintptr_t w = v ^ kMuWait;
+  // By flipping that bit, we can now test for:
+  //   kMuWriter and kMuReader in w
+  //   kMuWrWait and kMuWait in w
+  // We've chosen these two pairs of values to be so that they will overlap,
+  // respectively, when the word is left shifted by three.  This allows us to
+  // save a branch in the common (correct) case of them not being coincident.
+  static_assert(kMuReader << 3 == kMuWriter, "must match");
+  static_assert(kMuWait << 3 == kMuWrWait, "must match");
+  if (ABSL_PREDICT_TRUE((w & (w << 3) & (kMuWriter | kMuWrWait)) == 0)) return;
+  RAW_CHECK_FMT((v & (kMuWriter | kMuReader)) != (kMuWriter | kMuReader),
+                "%s: Mutex corrupt: both reader and writer lock held: %p",
+                label, reinterpret_cast<void *>(v));
+  RAW_CHECK_FMT((v & (kMuWait | kMuWrWait)) != kMuWrWait,
+                "%s: Mutex corrupt: waiting writer with no waiters: %p",
+                label, reinterpret_cast<void *>(v));
+  assert(false);
+}
+
+void Mutex::LockSlowLoop(SynchWaitParams *waitp, int flags) {
+  int c = 0;
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  if ((v & kMuEvent) != 0) {
+    PostSynchEvent(this,
+         waitp->how == kExclusive?  SYNCH_EV_LOCK: SYNCH_EV_READERLOCK);
+  }
+  ABSL_RAW_CHECK(
+      waitp->thread->waitp == nullptr || waitp->thread->suppress_fatal_errors,
+      "detected illegal recursion into Mutex code");
+  for (;;) {
+    v = mu_.load(std::memory_order_relaxed);
+    CheckForMutexCorruption(v, "Lock");
+    if ((v & waitp->how->slow_need_zero) == 0) {
+      if (mu_.compare_exchange_strong(
+              v, (waitp->how->fast_or |
+                  (v & zap_desig_waker[flags & kMuHasBlocked])) +
+                     waitp->how->fast_add,
+              std::memory_order_acquire, std::memory_order_relaxed)) {
+        if (waitp->cond == nullptr ||
+            EvalConditionAnnotated(waitp->cond, this, true, false,
+                                   waitp->how == kShared)) {
+          break;  // we timed out, or condition true, so return
+        }
+        this->UnlockSlow(waitp);  // got lock but condition false
+        this->Block(waitp->thread);
+        flags |= kMuHasBlocked;
+        c = 0;
+      }
+    } else {                      // need to access waiter list
+      bool dowait = false;
+      if ((v & (kMuSpin|kMuWait)) == 0) {   // no waiters
+        // This thread tries to become the one and only waiter.
+        PerThreadSynch *new_h = Enqueue(nullptr, waitp, v, flags);
+        intptr_t nv = (v & zap_desig_waker[flags & kMuHasBlocked] & kMuLow) |
+                      kMuWait;
+        ABSL_RAW_CHECK(new_h != nullptr, "Enqueue to empty list failed");
+        if (waitp->how == kExclusive && (v & kMuReader) != 0) {
+          nv |= kMuWrWait;
+        }
+        if (mu_.compare_exchange_strong(
+                v, reinterpret_cast<intptr_t>(new_h) | nv,
+                std::memory_order_release, std::memory_order_relaxed)) {
+          dowait = true;
+        } else {            // attempted Enqueue() failed
+          // zero out the waitp field set by Enqueue()
+          waitp->thread->waitp = nullptr;
+        }
+      } else if ((v & waitp->how->slow_inc_need_zero &
+                  ignore_waiting_writers[flags & kMuHasBlocked]) == 0) {
+        // This is a reader that needs to increment the reader count,
+        // but the count is currently held in the last waiter.
+        if (mu_.compare_exchange_strong(
+                v, (v & zap_desig_waker[flags & kMuHasBlocked]) | kMuSpin |
+                       kMuReader,
+                std::memory_order_acquire, std::memory_order_relaxed)) {
+          PerThreadSynch *h = GetPerThreadSynch(v);
+          h->readers += kMuOne;       // inc reader count in waiter
+          do {                        // release spinlock
+            v = mu_.load(std::memory_order_relaxed);
+          } while (!mu_.compare_exchange_weak(v, (v & ~kMuSpin) | kMuReader,
+                                              std::memory_order_release,
+                                              std::memory_order_relaxed));
+          if (waitp->cond == nullptr ||
+              EvalConditionAnnotated(waitp->cond, this, true, false,
+                                     waitp->how == kShared)) {
+            break;  // we timed out, or condition true, so return
+          }
+          this->UnlockSlow(waitp);           // got lock but condition false
+          this->Block(waitp->thread);
+          flags |= kMuHasBlocked;
+          c = 0;
+        }
+      } else if ((v & kMuSpin) == 0 &&  // attempt to queue ourselves
+                 mu_.compare_exchange_strong(
+                     v, (v & zap_desig_waker[flags & kMuHasBlocked]) | kMuSpin |
+                            kMuWait,
+                     std::memory_order_acquire, std::memory_order_relaxed)) {
+        PerThreadSynch *h = GetPerThreadSynch(v);
+        PerThreadSynch *new_h = Enqueue(h, waitp, v, flags);
+        intptr_t wr_wait = 0;
+        ABSL_RAW_CHECK(new_h != nullptr, "Enqueue to list failed");
+        if (waitp->how == kExclusive && (v & kMuReader) != 0) {
+          wr_wait = kMuWrWait;      // give priority to a waiting writer
+        }
+        do {                        // release spinlock
+          v = mu_.load(std::memory_order_relaxed);
+        } while (!mu_.compare_exchange_weak(
+            v, (v & (kMuLow & ~kMuSpin)) | kMuWait | wr_wait |
+            reinterpret_cast<intptr_t>(new_h),
+            std::memory_order_release, std::memory_order_relaxed));
+        dowait = true;
+      }
+      if (dowait) {
+        this->Block(waitp->thread);  // wait until removed from list or timeout
+        flags |= kMuHasBlocked;
+        c = 0;
+      }
+    }
+    ABSL_RAW_CHECK(
+        waitp->thread->waitp == nullptr || waitp->thread->suppress_fatal_errors,
+        "detected illegal recursion into Mutex code");
+    c = Delay(c, GENTLE);          // delay, then try again
+  }
+  ABSL_RAW_CHECK(
+      waitp->thread->waitp == nullptr || waitp->thread->suppress_fatal_errors,
+      "detected illegal recursion into Mutex code");
+  if ((v & kMuEvent) != 0) {
+    PostSynchEvent(this,
+                   waitp->how == kExclusive? SYNCH_EV_LOCK_RETURNING :
+                                      SYNCH_EV_READERLOCK_RETURNING);
+  }
+}
+
+// Unlock this mutex, which is held by the current thread.
+// If waitp is non-zero, it must be the wait parameters for the current thread
+// which holds the lock but is not runnable because its condition is false
+// or it is in the process of blocking on a condition variable; it must requeue
+// itself on the mutex/condvar to wait for its condition to become true.
+void Mutex::UnlockSlow(SynchWaitParams *waitp) {
+  intptr_t v = mu_.load(std::memory_order_relaxed);
+  this->AssertReaderHeld();
+  CheckForMutexCorruption(v, "Unlock");
+  if ((v & kMuEvent) != 0) {
+    PostSynchEvent(this,
+                (v & kMuWriter) != 0? SYNCH_EV_UNLOCK: SYNCH_EV_READERUNLOCK);
+  }
+  int c = 0;
+  // the waiter under consideration to wake, or zero
+  PerThreadSynch *w = nullptr;
+  // the predecessor to w or zero
+  PerThreadSynch *pw = nullptr;
+  // head of the list searched previously, or zero
+  PerThreadSynch *old_h = nullptr;
+  // a condition that's known to be false.
+  const Condition *known_false = nullptr;
+  PerThreadSynch *wake_list = kPerThreadSynchNull;   // list of threads to wake
+  intptr_t wr_wait = 0;        // set to kMuWrWait if we wake a reader and a
+                               // later writer could have acquired the lock
+                               // (starvation avoidance)
+  ABSL_RAW_CHECK(waitp == nullptr || waitp->thread->waitp == nullptr ||
+                     waitp->thread->suppress_fatal_errors,
+                 "detected illegal recursion into Mutex code");
+  // This loop finds threads wake_list to wakeup if any, and removes them from
+  // the list of waiters.  In addition, it places waitp.thread on the queue of
+  // waiters if waitp is non-zero.
+  for (;;) {
+    v = mu_.load(std::memory_order_relaxed);
+    if ((v & kMuWriter) != 0 && (v & (kMuWait | kMuDesig)) != kMuWait &&
+        waitp == nullptr) {
+      // fast writer release (writer with no waiters or with designated waker)
+      if (mu_.compare_exchange_strong(v, v & ~(kMuWrWait | kMuWriter),
+                                      std::memory_order_release,
+                                      std::memory_order_relaxed)) {
+        return;
+      }
+    } else if ((v & (kMuReader | kMuWait)) == kMuReader && waitp == nullptr) {
+      // fast reader release (reader with no waiters)
+      intptr_t clear = ExactlyOneReader(v) ? kMuReader | kMuOne : kMuOne;
+      if (mu_.compare_exchange_strong(v, v - clear,
+                                      std::memory_order_release,
+                                      std::memory_order_relaxed)) {
+        return;
+      }
+    } else if ((v & kMuSpin) == 0 &&  // attempt to get spinlock
+               mu_.compare_exchange_strong(v, v | kMuSpin,
+                                           std::memory_order_acquire,
+                                           std::memory_order_relaxed)) {
+      if ((v & kMuWait) == 0) {       // no one to wake
+        intptr_t nv;
+        bool do_enqueue = true;  // always Enqueue() the first time
+        ABSL_RAW_CHECK(waitp != nullptr,
+                       "UnlockSlow is confused");  // about to sleep
+        do {    // must loop to release spinlock as reader count may change
+          v = mu_.load(std::memory_order_relaxed);
+          // decrement reader count if there are readers
+          intptr_t new_readers = (v >= kMuOne)?  v - kMuOne : v;
+          PerThreadSynch *new_h = nullptr;
+          if (do_enqueue) {
+            // If we are enqueuing on a CondVar (waitp->cv_word != nullptr) then
+            // we must not retry here.  The initial attempt will always have
+            // succeeded, further attempts would enqueue us against *this due to
+            // Fer() handling.
+            do_enqueue = (waitp->cv_word == nullptr);
+            new_h = Enqueue(nullptr, waitp, new_readers, kMuIsCond);
+          }
+          intptr_t clear = kMuWrWait | kMuWriter;  // by default clear write bit
+          if ((v & kMuWriter) == 0 && ExactlyOneReader(v)) {  // last reader
+            clear = kMuWrWait | kMuReader;                    // clear read bit
+          }
+          nv = (v & kMuLow & ~clear & ~kMuSpin);
+          if (new_h != nullptr) {
+            nv |= kMuWait | reinterpret_cast<intptr_t>(new_h);
+          } else {  // new_h could be nullptr if we queued ourselves on a
+                    // CondVar
+            // In that case, we must place the reader count back in the mutex
+            // word, as Enqueue() did not store it in the new waiter.
+            nv |= new_readers & kMuHigh;
+          }
+          // release spinlock & our lock; retry if reader-count changed
+          // (writer count cannot change since we hold lock)
+        } while (!mu_.compare_exchange_weak(v, nv,
+                                            std::memory_order_release,
+                                            std::memory_order_relaxed));
+        break;
+      }
+
+      // There are waiters.
+      // Set h to the head of the circular waiter list.
+      PerThreadSynch *h = GetPerThreadSynch(v);
+      if ((v & kMuReader) != 0 && (h->readers & kMuHigh) > kMuOne) {
+        // a reader but not the last
+        h->readers -= kMuOne;  // release our lock
+        intptr_t nv = v;       // normally just release spinlock
+        if (waitp != nullptr) {  // but waitp!=nullptr => must queue ourselves
+          PerThreadSynch *new_h = Enqueue(h, waitp, v, kMuIsCond);
+          ABSL_RAW_CHECK(new_h != nullptr,
+                         "waiters disappeared during Enqueue()!");
+          nv &= kMuLow;
+          nv |= kMuWait | reinterpret_cast<intptr_t>(new_h);
+        }
+        mu_.store(nv, std::memory_order_release);  // release spinlock
+        // can release with a store because there were waiters
+        break;
+      }
+
+      // Either we didn't search before, or we marked the queue
+      // as "maybe_unlocking" and no one else should have changed it.
+      ABSL_RAW_CHECK(old_h == nullptr || h->maybe_unlocking,
+                     "Mutex queue changed beneath us");
+
+      // The lock is becoming free, and there's a waiter
+      if (old_h != nullptr &&
+          !old_h->may_skip) {                  // we used old_h as a terminator
+        old_h->may_skip = true;                // allow old_h to skip once more
+        ABSL_RAW_CHECK(old_h->skip == nullptr, "illegal skip from head");
+        if (h != old_h && MuSameCondition(old_h, old_h->next)) {
+          old_h->skip = old_h->next;  // old_h not head & can skip to successor
+        }
+      }
+      if (h->next->waitp->how == kExclusive &&
+          Condition::GuaranteedEqual(h->next->waitp->cond, nullptr)) {
+        // easy case: writer with no condition; no need to search
+        pw = h;                       // wake w, the successor of h (=pw)
+        w = h->next;
+        w->wake = true;
+        // We are waking up a writer.  This writer may be racing against
+        // an already awake reader for the lock.  We want the
+        // writer to usually win this race,
+        // because if it doesn't, we can potentially keep taking a reader
+        // perpetually and writers will starve.  Worse than
+        // that, this can also starve other readers if kMuWrWait gets set
+        // later.
+        wr_wait = kMuWrWait;
+      } else if (w != nullptr && (w->waitp->how == kExclusive || h == old_h)) {
+        // we found a waiter w to wake on a previous iteration and either it's
+        // a writer, or we've searched the entire list so we have all the
+        // readers.
+        if (pw == nullptr) {  // if w's predecessor is unknown, it must be h
+          pw = h;
+        }
+      } else {
+        // At this point we don't know all the waiters to wake, and the first
+        // waiter has a condition or is a reader.  We avoid searching over
+        // waiters we've searched on previous iterations by starting at
+        // old_h if it's set.  If old_h==h, there's no one to wakeup at all.
+        if (old_h == h) {      // we've searched before, and nothing's new
+                               // so there's no one to wake.
+          intptr_t nv = (v & ~(kMuReader|kMuWriter|kMuWrWait));
+          h->readers = 0;
+          h->maybe_unlocking = false;   // finished unlocking
+          if (waitp != nullptr) {       // we must queue ourselves and sleep
+            PerThreadSynch *new_h = Enqueue(h, waitp, v, kMuIsCond);
+            nv &= kMuLow;
+            if (new_h != nullptr) {
+              nv |= kMuWait | reinterpret_cast<intptr_t>(new_h);
+            }  // else new_h could be nullptr if we queued ourselves on a
+               // CondVar
+          }
+          // release spinlock & lock
+          // can release with a store because there were waiters
+          mu_.store(nv, std::memory_order_release);
+          break;
+        }
+
+        // set up to walk the list
+        PerThreadSynch *w_walk;   // current waiter during list walk
+        PerThreadSynch *pw_walk;  // previous waiter during list walk
+        if (old_h != nullptr) {  // we've searched up to old_h before
+          pw_walk = old_h;
+          w_walk = old_h->next;
+        } else {            // no prior search, start at beginning
+          pw_walk =
+              nullptr;  // h->next's predecessor may change; don't record it
+          w_walk = h->next;
+        }
+
+        h->may_skip = false;  // ensure we never skip past h in future searches
+                              // even if other waiters are queued after it.
+        ABSL_RAW_CHECK(h->skip == nullptr, "illegal skip from head");
+
+        h->maybe_unlocking = true;  // we're about to scan the waiter list
+                                    // without the spinlock held.
+                                    // Enqueue must be conservative about
+                                    // priority queuing.
+
+        // We must release the spinlock to evaluate the conditions.
+        mu_.store(v, std::memory_order_release);  // release just spinlock
+        // can release with a store because there were waiters
+
+        // h is the last waiter queued, and w_walk the first unsearched waiter.
+        // Without the spinlock, the locations mu_ and h->next may now change
+        // underneath us, but since we hold the lock itself, the only legal
+        // change is to add waiters between h and w_walk.  Therefore, it's safe
+        // to walk the path from w_walk to h inclusive. (TryRemove() can remove
+        // a waiter anywhere, but it acquires both the spinlock and the Mutex)
+
+        old_h = h;        // remember we searched to here
+
+        // Walk the path upto and including h looking for waiters we can wake.
+        while (pw_walk != h) {
+          w_walk->wake = false;
+          if (w_walk->waitp->cond ==
+                  nullptr ||  // no condition => vacuously true OR
+              (w_walk->waitp->cond != known_false &&
+               // this thread's condition is not known false, AND
+               //  is in fact true
+               EvalConditionIgnored(this, w_walk->waitp->cond))) {
+            if (w == nullptr) {
+              w_walk->wake = true;    // can wake this waiter
+              w = w_walk;
+              pw = pw_walk;
+              if (w_walk->waitp->how == kExclusive) {
+                wr_wait = kMuWrWait;
+                break;                // bail if waking this writer
+              }
+            } else if (w_walk->waitp->how == kShared) {  // wake if a reader
+              w_walk->wake = true;
+            } else {   // writer with true condition
+              wr_wait = kMuWrWait;
+            }
+          } else {                  // can't wake; condition false
+            known_false = w_walk->waitp->cond;  // remember last false condition
+          }
+          if (w_walk->wake) {   // we're waking reader w_walk
+            pw_walk = w_walk;   // don't skip similar waiters
+          } else {              // not waking; skip as much as possible
+            pw_walk = Skip(w_walk);
+          }
+          // If pw_walk == h, then load of pw_walk->next can race with
+          // concurrent write in Enqueue(). However, at the same time
+          // we do not need to do the load, because we will bail out
+          // from the loop anyway.
+          if (pw_walk != h) {
+            w_walk = pw_walk->next;
+          }
+        }
+
+        continue;  // restart for(;;)-loop to wakeup w or to find more waiters
+      }
+      ABSL_RAW_CHECK(pw->next == w, "pw not w's predecessor");
+      // The first (and perhaps only) waiter we've chosen to wake is w, whose
+      // predecessor is pw.  If w is a reader, we must wake all the other
+      // waiters with wake==true as well.  We may also need to queue
+      // ourselves if waitp != null.  The spinlock and the lock are still
+      // held.
+
+      // This traverses the list in [ pw->next, h ], where h is the head,
+      // removing all elements with wake==true and placing them in the
+      // singly-linked list wake_list.  Returns the new head.
+      h = DequeueAllWakeable(h, pw, &wake_list);
+
+      intptr_t nv = (v & kMuEvent) | kMuDesig;
+                                             // assume no waiters left,
+                                             // set kMuDesig for INV1a
+
+      if (waitp != nullptr) {  // we must queue ourselves and sleep
+        h = Enqueue(h, waitp, v, kMuIsCond);
+        // h is new last waiter; could be null if we queued ourselves on a
+        // CondVar
+      }
+
+      ABSL_RAW_CHECK(wake_list != kPerThreadSynchNull,
+                     "unexpected empty wake list");
+
+      if (h != nullptr) {  // there are waiters left
+        h->readers = 0;
+        h->maybe_unlocking = false;     // finished unlocking
+        nv |= wr_wait | kMuWait | reinterpret_cast<intptr_t>(h);
+      }
+
+      // release both spinlock & lock
+      // can release with a store because there were waiters
+      mu_.store(nv, std::memory_order_release);
+      break;  // out of for(;;)-loop
+    }
+    c = Delay(c, AGGRESSIVE);  // aggressive here; no one can proceed till we do
+  }                            // end of for(;;)-loop
+
+  if (wake_list != kPerThreadSynchNull) {
+    int64_t enqueue_timestamp = wake_list->waitp->contention_start_cycles;
+    bool cond_waiter = wake_list->cond_waiter;
+    do {
+      wake_list = Wakeup(wake_list);              // wake waiters
+    } while (wake_list != kPerThreadSynchNull);
+    if (!cond_waiter) {
+      // Sample lock contention events only if the (first) waiter was trying to
+      // acquire the lock, not waiting on a condition variable or Condition.
+      int64_t wait_cycles = base_internal::CycleClock::Now() - enqueue_timestamp;
+      mutex_tracer("slow release", this, wait_cycles);
+      ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0);
+      submit_profile_data(enqueue_timestamp);
+      ABSL_TSAN_MUTEX_POST_DIVERT(this, 0);
+    }
+  }
+}
+
+// Used by CondVar implementation to reacquire mutex after waking from
+// condition variable.  This routine is used instead of Lock() because the
+// waiting thread may have been moved from the condition variable queue to the
+// mutex queue without a wakeup, by Trans().  In that case, when the thread is
+// finally woken, the woken thread will believe it has been woken from the
+// condition variable (i.e. its PC will be in when in the CondVar code), when
+// in fact it has just been woken from the mutex.  Thus, it must enter the slow
+// path of the mutex in the same state as if it had just woken from the mutex.
+// That is, it must ensure to clear kMuDesig (INV1b).
+void Mutex::Trans(MuHow how) {
+  this->LockSlow(how, nullptr, kMuHasBlocked | kMuIsCond);
+}
+
+// Used by CondVar implementation to effectively wake thread w from the
+// condition variable.  If this mutex is free, we simply wake the thread.
+// It will later acquire the mutex with high probability.  Otherwise, we
+// enqueue thread w on this mutex.
+void Mutex::Fer(PerThreadSynch *w) {
+  int c = 0;
+  ABSL_RAW_CHECK(w->waitp->cond == nullptr,
+                 "Mutex::Fer while waiting on Condition");
+  ABSL_RAW_CHECK(!w->waitp->timeout.has_timeout(),
+                 "Mutex::Fer while in timed wait");
+  ABSL_RAW_CHECK(w->waitp->cv_word == nullptr,
+                 "Mutex::Fer with pending CondVar queueing");
+  for (;;) {
+    intptr_t v = mu_.load(std::memory_order_relaxed);
+    // Note: must not queue if the mutex is unlocked (nobody will wake it).
+    // For example, we can have only kMuWait (conditional) or maybe
+    // kMuWait|kMuWrWait.
+    // conflicting != 0 implies that the waking thread cannot currently take
+    // the mutex, which in turn implies that someone else has it and can wake
+    // us if we queue.
+    const intptr_t conflicting =
+        kMuWriter | (w->waitp->how == kShared ? 0 : kMuReader);
+    if ((v & conflicting) == 0) {
+      w->next = nullptr;
+      w->state.store(PerThreadSynch::kAvailable, std::memory_order_release);
+      IncrementSynchSem(this, w);
+      return;
+    } else {
+      if ((v & (kMuSpin|kMuWait)) == 0) {       // no waiters
+        // This thread tries to become the one and only waiter.
+        PerThreadSynch *new_h = Enqueue(nullptr, w->waitp, v, kMuIsCond);
+        ABSL_RAW_CHECK(new_h != nullptr,
+                       "Enqueue failed");  // we must queue ourselves
+        if (mu_.compare_exchange_strong(
+                v, reinterpret_cast<intptr_t>(new_h) | (v & kMuLow) | kMuWait,
+                std::memory_order_release, std::memory_order_relaxed)) {
+          return;
+        }
+      } else if ((v & kMuSpin) == 0 &&
+                 mu_.compare_exchange_strong(v, v | kMuSpin | kMuWait)) {
+        PerThreadSynch *h = GetPerThreadSynch(v);
+        PerThreadSynch *new_h = Enqueue(h, w->waitp, v, kMuIsCond);
+        ABSL_RAW_CHECK(new_h != nullptr,
+                       "Enqueue failed");  // we must queue ourselves
+        do {
+          v = mu_.load(std::memory_order_relaxed);
+        } while (!mu_.compare_exchange_weak(
+            v,
+            (v & kMuLow & ~kMuSpin) | kMuWait |
+                reinterpret_cast<intptr_t>(new_h),
+            std::memory_order_release, std::memory_order_relaxed));
+        return;
+      }
+    }
+    c = Delay(c, GENTLE);
+  }
+}
+
+void Mutex::AssertHeld() const {
+  if ((mu_.load(std::memory_order_relaxed) & kMuWriter) == 0) {
+    SynchEvent *e = GetSynchEvent(this);
+    ABSL_RAW_LOG(FATAL, "thread should hold write lock on Mutex %p %s",
+                 static_cast<const void *>(this),
+                 (e == nullptr ? "" : e->name));
+  }
+}
+
+void Mutex::AssertReaderHeld() const {
+  if ((mu_.load(std::memory_order_relaxed) & (kMuReader | kMuWriter)) == 0) {
+    SynchEvent *e = GetSynchEvent(this);
+    ABSL_RAW_LOG(
+        FATAL, "thread should hold at least a read lock on Mutex %p %s",
+        static_cast<const void *>(this), (e == nullptr ? "" : e->name));
+  }
+}
+
+// -------------------------------- condition variables
+static const intptr_t kCvSpin = 0x0001L;   // spinlock protects waiter list
+static const intptr_t kCvEvent = 0x0002L;  // record events
+
+static const intptr_t kCvLow = 0x0003L;  // low order bits of CV
+
+// Hack to make constant values available to gdb pretty printer
+enum { kGdbCvSpin = kCvSpin, kGdbCvEvent = kCvEvent, kGdbCvLow = kCvLow, };
+
+static_assert(PerThreadSynch::kAlignment > kCvLow,
+              "PerThreadSynch::kAlignment must be greater than kCvLow");
+
+void CondVar::EnableDebugLog(const char *name) {
+  SynchEvent *e = EnsureSynchEvent(&this->cv_, name, kCvEvent, kCvSpin);
+  e->log = true;
+  UnrefSynchEvent(e);
+}
+
+CondVar::~CondVar() {
+  if ((cv_.load(std::memory_order_relaxed) & kCvEvent) != 0) {
+    ForgetSynchEvent(&this->cv_, kCvEvent, kCvSpin);
+  }
+}
+
+
+// Remove thread s from the list of waiters on this condition variable.
+void CondVar::Remove(PerThreadSynch *s) {
+  intptr_t v;
+  int c = 0;
+  for (v = cv_.load(std::memory_order_relaxed);;
+       v = cv_.load(std::memory_order_relaxed)) {
+    if ((v & kCvSpin) == 0 &&  // attempt to acquire spinlock
+        cv_.compare_exchange_strong(v, v | kCvSpin,
+                                    std::memory_order_acquire,
+                                    std::memory_order_relaxed)) {
+      PerThreadSynch *h = reinterpret_cast<PerThreadSynch *>(v & ~kCvLow);
+      if (h != nullptr) {
+        PerThreadSynch *w = h;
+        while (w->next != s && w->next != h) {  // search for thread
+          w = w->next;
+        }
+        if (w->next == s) {           // found thread; remove it
+          w->next = s->next;
+          if (h == s) {
+            h = (w == s) ? nullptr : w;
+          }
+          s->next = nullptr;
+          s->state.store(PerThreadSynch::kAvailable, std::memory_order_release);
+        }
+      }
+                                      // release spinlock
+      cv_.store((v & kCvEvent) | reinterpret_cast<intptr_t>(h),
+                std::memory_order_release);
+      return;
+    } else {
+      c = Delay(c, GENTLE);            // try again after a delay
+    }
+  }
+}
+
+// Queue thread waitp->thread on condition variable word cv_word using
+// wait parameters waitp.
+// We split this into a separate routine, rather than simply doing it as part
+// of WaitCommon().  If we were to queue ourselves on the condition variable
+// before calling Mutex::UnlockSlow(), the Mutex code might be re-entered (via
+// the logging code, or via a Condition function) and might potentially attempt
+// to block this thread.  That would be a problem if the thread were already on
+// a the condition variable waiter queue.  Thus, we use the waitp->cv_word
+// to tell the unlock code to call CondVarEnqueue() to queue the thread on the
+// condition variable queue just before the mutex is to be unlocked, and (most
+// importantly) after any call to an external routine that might re-enter the
+// mutex code.
+static void CondVarEnqueue(SynchWaitParams *waitp) {
+  // This thread might be transferred to the Mutex queue by Fer() when
+  // we are woken.  To make sure that is what happens, Enqueue() doesn't
+  // call CondVarEnqueue() again but instead uses its normal code.  We
+  // must do this before we queue ourselves so that cv_word will be null
+  // when seen by the dequeuer, who may wish immediately to requeue
+  // this thread on another queue.
+  std::atomic<intptr_t> *cv_word = waitp->cv_word;
+  waitp->cv_word = nullptr;
+
+  intptr_t v = cv_word->load(std::memory_order_relaxed);
+  int c = 0;
+  while ((v & kCvSpin) != 0 ||  // acquire spinlock
+         !cv_word->compare_exchange_weak(v, v | kCvSpin,
+                                         std::memory_order_acquire,
+                                         std::memory_order_relaxed)) {
+    c = Delay(c, GENTLE);
+    v = cv_word->load(std::memory_order_relaxed);
+  }
+  ABSL_RAW_CHECK(waitp->thread->waitp == nullptr, "waiting when shouldn't be");
+  waitp->thread->waitp = waitp;      // prepare ourselves for waiting
+  PerThreadSynch *h = reinterpret_cast<PerThreadSynch *>(v & ~kCvLow);
+  if (h == nullptr) {  // add this thread to waiter list
+    waitp->thread->next = waitp->thread;
+  } else {
+    waitp->thread->next = h->next;
+    h->next = waitp->thread;
+  }
+  waitp->thread->state.store(PerThreadSynch::kQueued,
+                             std::memory_order_relaxed);
+  cv_word->store((v & kCvEvent) | reinterpret_cast<intptr_t>(waitp->thread),
+                 std::memory_order_release);
+}
+
+bool CondVar::WaitCommon(Mutex *mutex, KernelTimeout t) {
+  bool rc = false;          // return value; true iff we timed-out
+
+  intptr_t mutex_v = mutex->mu_.load(std::memory_order_relaxed);
+  Mutex::MuHow mutex_how = ((mutex_v & kMuWriter) != 0) ? kExclusive : kShared;
+  ABSL_TSAN_MUTEX_PRE_UNLOCK(mutex, TsanFlags(mutex_how));
+
+  // maybe trace this call
+  intptr_t v = cv_.load(std::memory_order_relaxed);
+  cond_var_tracer("Wait", this);
+  if ((v & kCvEvent) != 0) {
+    PostSynchEvent(this, SYNCH_EV_WAIT);
+  }
+
+  // Release mu and wait on condition variable.
+  SynchWaitParams waitp(mutex_how, nullptr, t, mutex,
+                        Synch_GetPerThreadAnnotated(mutex), &cv_);
+  // UnlockSlow() will call CondVarEnqueue() just before releasing the
+  // Mutex, thus queuing this thread on the condition variable.  See
+  // CondVarEnqueue() for the reasons.
+  mutex->UnlockSlow(&waitp);
+
+  // wait for signal
+  while (waitp.thread->state.load(std::memory_order_acquire) ==
+         PerThreadSynch::kQueued) {
+    if (!Mutex::DecrementSynchSem(mutex, waitp.thread, t)) {
+      this->Remove(waitp.thread);
+      rc = true;
+    }
+  }
+
+  ABSL_RAW_CHECK(waitp.thread->waitp != nullptr, "not waiting when should be");
+  waitp.thread->waitp = nullptr;  // cleanup
+
+  // maybe trace this call
+  cond_var_tracer("Unwait", this);
+  if ((v & kCvEvent) != 0) {
+    PostSynchEvent(this, SYNCH_EV_WAIT_RETURNING);
+  }
+
+  // From synchronization point of view Wait is unlock of the mutex followed
+  // by lock of the mutex. We've annotated start of unlock in the beginning
+  // of the function. Now, finish unlock and annotate lock of the mutex.
+  // (Trans is effectively lock).
+  ABSL_TSAN_MUTEX_POST_UNLOCK(mutex, TsanFlags(mutex_how));
+  ABSL_TSAN_MUTEX_PRE_LOCK(mutex, TsanFlags(mutex_how));
+  mutex->Trans(mutex_how);  // Reacquire mutex
+  ABSL_TSAN_MUTEX_POST_LOCK(mutex, TsanFlags(mutex_how), 0);
+  return rc;
+}
+
+bool CondVar::WaitWithTimeout(Mutex *mu, absl::Duration timeout) {
+  return WaitWithDeadline(mu, DeadlineFromTimeout(timeout));
+}
+
+bool CondVar::WaitWithDeadline(Mutex *mu, absl::Time deadline) {
+  return WaitCommon(mu, KernelTimeout(deadline));
+}
+
+void CondVar::Wait(Mutex *mu) {
+  WaitCommon(mu, KernelTimeout::Never());
+}
+
+// Wake thread w
+// If it was a timed wait, w will be waiting on w->cv
+// Otherwise, if it was not a Mutex mutex, w will be waiting on w->sem
+// Otherwise, w is transferred to the Mutex mutex via Mutex::Fer().
+void CondVar::Wakeup(PerThreadSynch *w) {
+  if (w->waitp->timeout.has_timeout() || w->waitp->cvmu == nullptr) {
+    // The waiting thread only needs to observe "w->state == kAvailable" to be
+    // released, we must cache "cvmu" before clearing "next".
+    Mutex *mu = w->waitp->cvmu;
+    w->next = nullptr;
+    w->state.store(PerThreadSynch::kAvailable, std::memory_order_release);
+    Mutex::IncrementSynchSem(mu, w);
+  } else {
+    w->waitp->cvmu->Fer(w);
+  }
+}
+
+void CondVar::Signal() {
+  ABSL_TSAN_MUTEX_PRE_SIGNAL(nullptr, 0);
+  intptr_t v;
+  int c = 0;
+  for (v = cv_.load(std::memory_order_relaxed); v != 0;
+       v = cv_.load(std::memory_order_relaxed)) {
+    if ((v & kCvSpin) == 0 &&  // attempt to acquire spinlock
+        cv_.compare_exchange_strong(v, v | kCvSpin,
+                                    std::memory_order_acquire,
+                                    std::memory_order_relaxed)) {
+      PerThreadSynch *h = reinterpret_cast<PerThreadSynch *>(v & ~kCvLow);
+      PerThreadSynch *w = nullptr;
+      if (h != nullptr) {  // remove first waiter
+        w = h->next;
+        if (w == h) {
+          h = nullptr;
+        } else {
+          h->next = w->next;
+        }
+      }
+                                      // release spinlock
+      cv_.store((v & kCvEvent) | reinterpret_cast<intptr_t>(h),
+                std::memory_order_release);
+      if (w != nullptr) {
+        CondVar::Wakeup(w);                // wake waiter, if there was one
+        cond_var_tracer("Signal wakeup", this);
+      }
+      if ((v & kCvEvent) != 0) {
+        PostSynchEvent(this, SYNCH_EV_SIGNAL);
+      }
+      ABSL_TSAN_MUTEX_POST_SIGNAL(nullptr, 0);
+      return;
+    } else {
+      c = Delay(c, GENTLE);
+    }
+  }
+  ABSL_TSAN_MUTEX_POST_SIGNAL(nullptr, 0);
+}
+
+void CondVar::SignalAll () {
+  ABSL_TSAN_MUTEX_PRE_SIGNAL(nullptr, 0);
+  intptr_t v;
+  int c = 0;
+  for (v = cv_.load(std::memory_order_relaxed); v != 0;
+       v = cv_.load(std::memory_order_relaxed)) {
+    // empty the list if spinlock free
+    // We do this by simply setting the list to empty using
+    // compare and swap.   We then have the entire list in our hands,
+    // which cannot be changing since we grabbed it while no one
+    // held the lock.
+    if ((v & kCvSpin) == 0 &&
+        cv_.compare_exchange_strong(v, v & kCvEvent, std::memory_order_acquire,
+                                    std::memory_order_relaxed)) {
+      PerThreadSynch *h = reinterpret_cast<PerThreadSynch *>(v & ~kCvLow);
+      if (h != nullptr) {
+        PerThreadSynch *w;
+        PerThreadSynch *n = h->next;
+        do {                          // for every thread, wake it up
+          w = n;
+          n = n->next;
+          CondVar::Wakeup(w);
+        } while (w != h);
+        cond_var_tracer("SignalAll wakeup", this);
+      }
+      if ((v & kCvEvent) != 0) {
+        PostSynchEvent(this, SYNCH_EV_SIGNALALL);
+      }
+      ABSL_TSAN_MUTEX_POST_SIGNAL(nullptr, 0);
+      return;
+    } else {
+      c = Delay(c, GENTLE);           // try again after a delay
+    }
+  }
+  ABSL_TSAN_MUTEX_POST_SIGNAL(nullptr, 0);
+}
+
+void ReleasableMutexLock::Release() {
+  ABSL_RAW_CHECK(this->mu_ != nullptr,
+                 "ReleasableMutexLock::Release may only be called once");
+  this->mu_->Unlock();
+  this->mu_ = nullptr;
+}
+
+#ifdef THREAD_SANITIZER
+extern "C" void __tsan_read1(void *addr);
+#else
+#define __tsan_read1(addr)  // do nothing if TSan not enabled
+#endif
+
+// A function that just returns its argument, dereferenced
+static bool Dereference(void *arg) {
+  // ThreadSanitizer does not instrument this file for memory accesses.
+  // This function dereferences a user variable that can participate
+  // in a data race, so we need to manually tell TSan about this memory access.
+  __tsan_read1(arg);
+  return *(static_cast<bool *>(arg));
+}
+
+Condition::Condition() {}   // null constructor, used for kTrue only
+const Condition Condition::kTrue;
+
+Condition::Condition(bool (*func)(void *), void *arg)
+    : eval_(&CallVoidPtrFunction),
+      function_(func),
+      method_(nullptr),
+      arg_(arg) {}
+
+bool Condition::CallVoidPtrFunction(const Condition *c) {
+  return (*c->function_)(c->arg_);
+}
+
+Condition::Condition(const bool *cond)
+    : eval_(CallVoidPtrFunction),
+      function_(Dereference),
+      method_(nullptr),
+      // const_cast is safe since Dereference does not modify arg
+      arg_(const_cast<bool *>(cond)) {}
+
+bool Condition::Eval() const {
+  // eval_ == null for kTrue
+  return (this->eval_ == nullptr) || (*this->eval_)(this);
+}
+
+bool Condition::GuaranteedEqual(const Condition *a, const Condition *b) {
+  if (a == nullptr) {
+    return b == nullptr || b->eval_ == nullptr;
+  }
+  if (b == nullptr || b->eval_ == nullptr) {
+    return a->eval_ == nullptr;
+  }
+  return a->eval_ == b->eval_ && a->function_ == b->function_ &&
+         a->arg_ == b->arg_ && a->method_ == b->method_;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.h b/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.h
new file mode 100644
index 0000000..8c70c4c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/mutex.h	
@@ -0,0 +1,1056 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// mutex.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a `Mutex` -- a mutually exclusive lock -- and the
+// most common type of synchronization primitive for facilitating locks on
+// shared resources. A mutex is used to prevent multiple threads from accessing
+// and/or writing to a shared resource concurrently.
+//
+// Unlike a `std::mutex`, the Abseil `Mutex` provides the following additional
+// features:
+//   * Conditional predicates intrinsic to the `Mutex` object
+//   * Shared/reader locks, in addition to standard exclusive/writer locks
+//   * Deadlock detection and debug support.
+//
+// The following helper classes are also defined within this file:
+//
+//  MutexLock - An RAII wrapper to acquire and release a `Mutex` for exclusive/
+//              write access within the current scope.
+//  ReaderMutexLock
+//            - An RAII wrapper to acquire and release a `Mutex` for shared/read
+//              access within the current scope.
+//
+//  WriterMutexLock
+//            - Alias for `MutexLock` above, designed for use in distinguishing
+//              reader and writer locks within code.
+//
+// In addition to simple mutex locks, this file also defines ways to perform
+// locking under certain conditions.
+//
+//  Condition   - (Preferred) Used to wait for a particular predicate that
+//                depends on state protected by the `Mutex` to become true.
+//  CondVar     - A lower-level variant of `Condition` that relies on
+//                application code to explicitly signal the `CondVar` when
+//                a condition has been met.
+//
+// See below for more information on using `Condition` or `CondVar`.
+//
+// Mutexes and mutex behavior can be quite complicated. The information within
+// this header file is limited, as a result. Please consult the Mutex guide for
+// more complete information and examples.
+
+#ifndef ABSL_SYNCHRONIZATION_MUTEX_H_
+#define ABSL_SYNCHRONIZATION_MUTEX_H_
+
+#include <atomic>
+#include <cstdint>
+#include <string>
+
+#include "absl/base/const_init.h"
+#include "absl/base/internal/identity.h"
+#include "absl/base/internal/low_level_alloc.h"
+#include "absl/base/internal/thread_identity.h"
+#include "absl/base/internal/tsan_mutex_interface.h"
+#include "absl/base/port.h"
+#include "absl/base/thread_annotations.h"
+#include "absl/synchronization/internal/kernel_timeout.h"
+#include "absl/synchronization/internal/per_thread_sem.h"
+#include "absl/time/time.h"
+
+// Decide if we should use the non-production implementation because
+// the production implementation hasn't been fully ported yet.
+#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
+#error ABSL_INTERNAL_USE_NONPROD_MUTEX cannot be directly set
+#elif defined(ABSL_LOW_LEVEL_ALLOC_MISSING)
+#define ABSL_INTERNAL_USE_NONPROD_MUTEX 1
+#include "absl/synchronization/internal/mutex_nonprod.inc"
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class Condition;
+struct SynchWaitParams;
+
+// -----------------------------------------------------------------------------
+// Mutex
+// -----------------------------------------------------------------------------
+//
+// A `Mutex` is a non-reentrant (aka non-recursive) Mutually Exclusive lock
+// on some resource, typically a variable or data structure with associated
+// invariants. Proper usage of mutexes prevents concurrent access by different
+// threads to the same resource.
+//
+// A `Mutex` has two basic operations: `Mutex::Lock()` and `Mutex::Unlock()`.
+// The `Lock()` operation *acquires* a `Mutex` (in a state known as an
+// *exclusive* -- or write -- lock), while the `Unlock()` operation *releases* a
+// Mutex. During the span of time between the Lock() and Unlock() operations,
+// a mutex is said to be *held*. By design all mutexes support exclusive/write
+// locks, as this is the most common way to use a mutex.
+//
+// The `Mutex` state machine for basic lock/unlock operations is quite simple:
+//
+// |                | Lock()     | Unlock() |
+// |----------------+------------+----------|
+// | Free           | Exclusive  | invalid  |
+// | Exclusive      | blocks     | Free     |
+//
+// Attempts to `Unlock()` must originate from the thread that performed the
+// corresponding `Lock()` operation.
+//
+// An "invalid" operation is disallowed by the API. The `Mutex` implementation
+// is allowed to do anything on an invalid call, including but not limited to
+// crashing with a useful error message, silently succeeding, or corrupting
+// data structures. In debug mode, the implementation attempts to crash with a
+// useful error message.
+//
+// `Mutex` is not guaranteed to be "fair" in prioritizing waiting threads; it
+// is, however, approximately fair over long periods, and starvation-free for
+// threads at the same priority.
+//
+// The lock/unlock primitives are now annotated with lock annotations
+// defined in (base/thread_annotations.h). When writing multi-threaded code,
+// you should use lock annotations whenever possible to document your lock
+// synchronization policy. Besides acting as documentation, these annotations
+// also help compilers or static analysis tools to identify and warn about
+// issues that could potentially result in race conditions and deadlocks.
+//
+// For more information about the lock annotations, please see
+// [Thread Safety Analysis](http://clang.llvm.org/docs/ThreadSafetyAnalysis.html)
+// in the Clang documentation.
+//
+// See also `MutexLock`, below, for scoped `Mutex` acquisition.
+
+class ABSL_LOCKABLE Mutex {
+ public:
+  // Creates a `Mutex` that is not held by anyone. This constructor is
+  // typically used for Mutexes allocated on the heap or the stack.
+  //
+  // To create `Mutex` instances with static storage duration
+  // (e.g. a namespace-scoped or global variable), see
+  // `Mutex::Mutex(absl::kConstInit)` below instead.
+  Mutex();
+
+  // Creates a mutex with static storage duration.  A global variable
+  // constructed this way avoids the lifetime issues that can occur on program
+  // startup and shutdown.  (See absl/base/const_init.h.)
+  //
+  // For Mutexes allocated on the heap and stack, instead use the default
+  // constructor, which can interact more fully with the thread sanitizer.
+  //
+  // Example usage:
+  //   namespace foo {
+  //   ABSL_CONST_INIT Mutex mu(absl::kConstInit);
+  //   }
+  explicit constexpr Mutex(absl::ConstInitType);
+
+  ~Mutex();
+
+  // Mutex::Lock()
+  //
+  // Blocks the calling thread, if necessary, until this `Mutex` is free, and
+  // then acquires it exclusively. (This lock is also known as a "write lock.")
+  void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION();
+
+  // Mutex::Unlock()
+  //
+  // Releases this `Mutex` and returns it from the exclusive/write state to the
+  // free state. Caller must hold the `Mutex` exclusively.
+  void Unlock() ABSL_UNLOCK_FUNCTION();
+
+  // Mutex::TryLock()
+  //
+  // If the mutex can be acquired without blocking, does so exclusively and
+  // returns `true`. Otherwise, returns `false`. Returns `true` with high
+  // probability if the `Mutex` was free.
+  bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true);
+
+  // Mutex::AssertHeld()
+  //
+  // Return immediately if this thread holds the `Mutex` exclusively (in write
+  // mode). Otherwise, may report an error (typically by crashing with a
+  // diagnostic), or may return immediately.
+  void AssertHeld() const ABSL_ASSERT_EXCLUSIVE_LOCK();
+
+  // ---------------------------------------------------------------------------
+  // Reader-Writer Locking
+  // ---------------------------------------------------------------------------
+
+  // A Mutex can also be used as a starvation-free reader-writer lock.
+  // Neither read-locks nor write-locks are reentrant/recursive to avoid
+  // potential client programming errors.
+  //
+  // The Mutex API provides `Writer*()` aliases for the existing `Lock()`,
+  // `Unlock()` and `TryLock()` methods for use within applications mixing
+  // reader/writer locks. Using `Reader*()` and `Writer*()` operations in this
+  // manner can make locking behavior clearer when mixing read and write modes.
+  //
+  // Introducing reader locks necessarily complicates the `Mutex` state
+  // machine somewhat. The table below illustrates the allowed state transitions
+  // of a mutex in such cases. Note that ReaderLock() may block even if the lock
+  // is held in shared mode; this occurs when another thread is blocked on a
+  // call to WriterLock().
+  //
+  // ---------------------------------------------------------------------------
+  //     Operation: WriterLock() Unlock()  ReaderLock()           ReaderUnlock()
+  // ---------------------------------------------------------------------------
+  // State
+  // ---------------------------------------------------------------------------
+  // Free           Exclusive    invalid   Shared(1)              invalid
+  // Shared(1)      blocks       invalid   Shared(2) or blocks    Free
+  // Shared(n) n>1  blocks       invalid   Shared(n+1) or blocks  Shared(n-1)
+  // Exclusive      blocks       Free      blocks                 invalid
+  // ---------------------------------------------------------------------------
+  //
+  // In comments below, "shared" refers to a state of Shared(n) for any n > 0.
+
+  // Mutex::ReaderLock()
+  //
+  // Blocks the calling thread, if necessary, until this `Mutex` is either free,
+  // or in shared mode, and then acquires a share of it. Note that
+  // `ReaderLock()` will block if some other thread has an exclusive/writer lock
+  // on the mutex.
+
+  void ReaderLock() ABSL_SHARED_LOCK_FUNCTION();
+
+  // Mutex::ReaderUnlock()
+  //
+  // Releases a read share of this `Mutex`. `ReaderUnlock` may return a mutex to
+  // the free state if this thread holds the last reader lock on the mutex. Note
+  // that you cannot call `ReaderUnlock()` on a mutex held in write mode.
+  void ReaderUnlock() ABSL_UNLOCK_FUNCTION();
+
+  // Mutex::ReaderTryLock()
+  //
+  // If the mutex can be acquired without blocking, acquires this mutex for
+  // shared access and returns `true`. Otherwise, returns `false`. Returns
+  // `true` with high probability if the `Mutex` was free or shared.
+  bool ReaderTryLock() ABSL_SHARED_TRYLOCK_FUNCTION(true);
+
+  // Mutex::AssertReaderHeld()
+  //
+  // Returns immediately if this thread holds the `Mutex` in at least shared
+  // mode (read mode). Otherwise, may report an error (typically by
+  // crashing with a diagnostic), or may return immediately.
+  void AssertReaderHeld() const ABSL_ASSERT_SHARED_LOCK();
+
+  // Mutex::WriterLock()
+  // Mutex::WriterUnlock()
+  // Mutex::WriterTryLock()
+  //
+  // Aliases for `Mutex::Lock()`, `Mutex::Unlock()`, and `Mutex::TryLock()`.
+  //
+  // These methods may be used (along with the complementary `Reader*()`
+  // methods) to distingish simple exclusive `Mutex` usage (`Lock()`,
+  // etc.) from reader/writer lock usage.
+  void WriterLock() ABSL_EXCLUSIVE_LOCK_FUNCTION() { this->Lock(); }
+
+  void WriterUnlock() ABSL_UNLOCK_FUNCTION() { this->Unlock(); }
+
+  bool WriterTryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
+    return this->TryLock();
+  }
+
+  // ---------------------------------------------------------------------------
+  // Conditional Critical Regions
+  // ---------------------------------------------------------------------------
+
+  // Conditional usage of a `Mutex` can occur using two distinct paradigms:
+  //
+  //   * Use of `Mutex` member functions with `Condition` objects.
+  //   * Use of the separate `CondVar` abstraction.
+  //
+  // In general, prefer use of `Condition` and the `Mutex` member functions
+  // listed below over `CondVar`. When there are multiple threads waiting on
+  // distinctly different conditions, however, a battery of `CondVar`s may be
+  // more efficient. This section discusses use of `Condition` objects.
+  //
+  // `Mutex` contains member functions for performing lock operations only under
+  // certain conditions, of class `Condition`. For correctness, the `Condition`
+  // must return a boolean that is a pure function, only of state protected by
+  // the `Mutex`. The condition must be invariant w.r.t. environmental state
+  // such as thread, cpu id, or time, and must be `noexcept`. The condition will
+  // always be invoked with the mutex held in at least read mode, so you should
+  // not block it for long periods or sleep it on a timer.
+  //
+  // Since a condition must not depend directly on the current time, use
+  // `*WithTimeout()` member function variants to make your condition
+  // effectively true after a given duration, or `*WithDeadline()` variants to
+  // make your condition effectively true after a given time.
+  //
+  // The condition function should have no side-effects aside from debug
+  // logging; as a special exception, the function may acquire other mutexes
+  // provided it releases all those that it acquires.  (This exception was
+  // required to allow logging.)
+
+  // Mutex::Await()
+  //
+  // Unlocks this `Mutex` and blocks until simultaneously both `cond` is `true`
+  // and this `Mutex` can be reacquired, then reacquires this `Mutex` in the
+  // same mode in which it was previously held. If the condition is initially
+  // `true`, `Await()` *may* skip the release/re-acquire step.
+  //
+  // `Await()` requires that this thread holds this `Mutex` in some mode.
+  void Await(const Condition &cond);
+
+  // Mutex::LockWhen()
+  // Mutex::ReaderLockWhen()
+  // Mutex::WriterLockWhen()
+  //
+  // Blocks until simultaneously both `cond` is `true` and this `Mutex` can
+  // be acquired, then atomically acquires this `Mutex`. `LockWhen()` is
+  // logically equivalent to `*Lock(); Await();` though they may have different
+  // performance characteristics.
+  void LockWhen(const Condition &cond) ABSL_EXCLUSIVE_LOCK_FUNCTION();
+
+  void ReaderLockWhen(const Condition &cond) ABSL_SHARED_LOCK_FUNCTION();
+
+  void WriterLockWhen(const Condition &cond) ABSL_EXCLUSIVE_LOCK_FUNCTION() {
+    this->LockWhen(cond);
+  }
+
+  // ---------------------------------------------------------------------------
+  // Mutex Variants with Timeouts/Deadlines
+  // ---------------------------------------------------------------------------
+
+  // Mutex::AwaitWithTimeout()
+  // Mutex::AwaitWithDeadline()
+  //
+  // If `cond` is initially true, do nothing, or act as though `cond` is
+  // initially false.
+  //
+  // If `cond` is initially false, unlock this `Mutex` and block until
+  // simultaneously:
+  //   - either `cond` is true or the {timeout has expired, deadline has passed}
+  //     and
+  //   - this `Mutex` can be reacquired,
+  // then reacquire this `Mutex` in the same mode in which it was previously
+  // held, returning `true` iff `cond` is `true` on return.
+  //
+  // Deadlines in the past are equivalent to an immediate deadline.
+  // Negative timeouts are equivalent to a zero timeout.
+  //
+  // This method requires that this thread holds this `Mutex` in some mode.
+  bool AwaitWithTimeout(const Condition &cond, absl::Duration timeout);
+
+  bool AwaitWithDeadline(const Condition &cond, absl::Time deadline);
+
+  // Mutex::LockWhenWithTimeout()
+  // Mutex::ReaderLockWhenWithTimeout()
+  // Mutex::WriterLockWhenWithTimeout()
+  //
+  // Blocks until simultaneously both:
+  //   - either `cond` is `true` or the timeout has expired, and
+  //   - this `Mutex` can be acquired,
+  // then atomically acquires this `Mutex`, returning `true` iff `cond` is
+  // `true` on return.
+  //
+  // Negative timeouts are equivalent to a zero timeout.
+  bool LockWhenWithTimeout(const Condition &cond, absl::Duration timeout)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION();
+  bool ReaderLockWhenWithTimeout(const Condition &cond, absl::Duration timeout)
+      ABSL_SHARED_LOCK_FUNCTION();
+  bool WriterLockWhenWithTimeout(const Condition &cond, absl::Duration timeout)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION() {
+    return this->LockWhenWithTimeout(cond, timeout);
+  }
+
+  // Mutex::LockWhenWithDeadline()
+  // Mutex::ReaderLockWhenWithDeadline()
+  // Mutex::WriterLockWhenWithDeadline()
+  //
+  // Blocks until simultaneously both:
+  //   - either `cond` is `true` or the deadline has been passed, and
+  //   - this `Mutex` can be acquired,
+  // then atomically acquires this Mutex, returning `true` iff `cond` is `true`
+  // on return.
+  //
+  // Deadlines in the past are equivalent to an immediate deadline.
+  bool LockWhenWithDeadline(const Condition &cond, absl::Time deadline)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION();
+  bool ReaderLockWhenWithDeadline(const Condition &cond, absl::Time deadline)
+      ABSL_SHARED_LOCK_FUNCTION();
+  bool WriterLockWhenWithDeadline(const Condition &cond, absl::Time deadline)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION() {
+    return this->LockWhenWithDeadline(cond, deadline);
+  }
+
+  // ---------------------------------------------------------------------------
+  // Debug Support: Invariant Checking, Deadlock Detection, Logging.
+  // ---------------------------------------------------------------------------
+
+  // Mutex::EnableInvariantDebugging()
+  //
+  // If `invariant`!=null and if invariant debugging has been enabled globally,
+  // cause `(*invariant)(arg)` to be called at moments when the invariant for
+  // this `Mutex` should hold (for example: just after acquire, just before
+  // release).
+  //
+  // The routine `invariant` should have no side-effects since it is not
+  // guaranteed how many times it will be called; it should check the invariant
+  // and crash if it does not hold. Enabling global invariant debugging may
+  // substantially reduce `Mutex` performance; it should be set only for
+  // non-production runs.  Optimization options may also disable invariant
+  // checks.
+  void EnableInvariantDebugging(void (*invariant)(void *), void *arg);
+
+  // Mutex::EnableDebugLog()
+  //
+  // Cause all subsequent uses of this `Mutex` to be logged via
+  // `ABSL_RAW_LOG(INFO)`. Log entries are tagged with `name` if no previous
+  // call to `EnableInvariantDebugging()` or `EnableDebugLog()` has been made.
+  //
+  // Note: This method substantially reduces `Mutex` performance.
+  void EnableDebugLog(const char *name);
+
+  // Deadlock detection
+
+  // Mutex::ForgetDeadlockInfo()
+  //
+  // Forget any deadlock-detection information previously gathered
+  // about this `Mutex`. Call this method in debug mode when the lock ordering
+  // of a `Mutex` changes.
+  void ForgetDeadlockInfo();
+
+  // Mutex::AssertNotHeld()
+  //
+  // Return immediately if this thread does not hold this `Mutex` in any
+  // mode; otherwise, may report an error (typically by crashing with a
+  // diagnostic), or may return immediately.
+  //
+  // Currently this check is performed only if all of:
+  //    - in debug mode
+  //    - SetMutexDeadlockDetectionMode() has been set to kReport or kAbort
+  //    - number of locks concurrently held by this thread is not large.
+  // are true.
+  void AssertNotHeld() const;
+
+  // Special cases.
+
+  // A `MuHow` is a constant that indicates how a lock should be acquired.
+  // Internal implementation detail.  Clients should ignore.
+  typedef const struct MuHowS *MuHow;
+
+  // Mutex::InternalAttemptToUseMutexInFatalSignalHandler()
+  //
+  // Causes the `Mutex` implementation to prepare itself for re-entry caused by
+  // future use of `Mutex` within a fatal signal handler. This method is
+  // intended for use only for last-ditch attempts to log crash information.
+  // It does not guarantee that attempts to use Mutexes within the handler will
+  // not deadlock; it merely makes other faults less likely.
+  //
+  // WARNING:  This routine must be invoked from a signal handler, and the
+  // signal handler must either loop forever or terminate the process.
+  // Attempts to return from (or `longjmp` out of) the signal handler once this
+  // call has been made may cause arbitrary program behaviour including
+  // crashes and deadlocks.
+  static void InternalAttemptToUseMutexInFatalSignalHandler();
+
+ private:
+#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
+  friend class CondVar;
+
+  synchronization_internal::MutexImpl *impl() { return impl_.get(); }
+
+  synchronization_internal::SynchronizationStorage<
+      synchronization_internal::MutexImpl>
+      impl_;
+#else
+  std::atomic<intptr_t> mu_;  // The Mutex state.
+
+  // Post()/Wait() versus associated PerThreadSem; in class for required
+  // friendship with PerThreadSem.
+  static inline void IncrementSynchSem(Mutex *mu,
+                                       base_internal::PerThreadSynch *w);
+  static inline bool DecrementSynchSem(
+      Mutex *mu, base_internal::PerThreadSynch *w,
+      synchronization_internal::KernelTimeout t);
+
+  // slow path acquire
+  void LockSlowLoop(SynchWaitParams *waitp, int flags);
+  // wrappers around LockSlowLoop()
+  bool LockSlowWithDeadline(MuHow how, const Condition *cond,
+                            synchronization_internal::KernelTimeout t,
+                            int flags);
+  void LockSlow(MuHow how, const Condition *cond,
+                int flags) ABSL_ATTRIBUTE_COLD;
+  // slow path release
+  void UnlockSlow(SynchWaitParams *waitp) ABSL_ATTRIBUTE_COLD;
+  // Common code between Await() and AwaitWithTimeout/Deadline()
+  bool AwaitCommon(const Condition &cond,
+                   synchronization_internal::KernelTimeout t);
+  // Attempt to remove thread s from queue.
+  void TryRemove(base_internal::PerThreadSynch *s);
+  // Block a thread on mutex.
+  void Block(base_internal::PerThreadSynch *s);
+  // Wake a thread; return successor.
+  base_internal::PerThreadSynch *Wakeup(base_internal::PerThreadSynch *w);
+
+  friend class CondVar;   // for access to Trans()/Fer().
+  void Trans(MuHow how);  // used for CondVar->Mutex transfer
+  void Fer(
+      base_internal::PerThreadSynch *w);  // used for CondVar->Mutex transfer
+#endif
+
+  // Catch the error of writing Mutex when intending MutexLock.
+  Mutex(const volatile Mutex * /*ignored*/) {}  // NOLINT(runtime/explicit)
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+};
+
+// -----------------------------------------------------------------------------
+// Mutex RAII Wrappers
+// -----------------------------------------------------------------------------
+
+// MutexLock
+//
+// `MutexLock` is a helper class, which acquires and releases a `Mutex` via
+// RAII.
+//
+// Example:
+//
+// Class Foo {
+//
+//   Foo::Bar* Baz() {
+//     MutexLock l(&lock_);
+//     ...
+//     return bar;
+//   }
+//
+// private:
+//   Mutex lock_;
+// };
+class ABSL_SCOPED_LOCKABLE MutexLock {
+ public:
+  explicit MutexLock(Mutex *mu) ABSL_EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
+    this->mu_->Lock();
+  }
+
+  MutexLock(const MutexLock &) = delete;  // NOLINT(runtime/mutex)
+  MutexLock(MutexLock&&) = delete;  // NOLINT(runtime/mutex)
+  MutexLock& operator=(const MutexLock&) = delete;
+  MutexLock& operator=(MutexLock&&) = delete;
+
+  ~MutexLock() ABSL_UNLOCK_FUNCTION() { this->mu_->Unlock(); }
+
+ private:
+  Mutex *const mu_;
+};
+
+// ReaderMutexLock
+//
+// The `ReaderMutexLock` is a helper class, like `MutexLock`, which acquires and
+// releases a shared lock on a `Mutex` via RAII.
+class ABSL_SCOPED_LOCKABLE ReaderMutexLock {
+ public:
+  explicit ReaderMutexLock(Mutex *mu) ABSL_SHARED_LOCK_FUNCTION(mu) : mu_(mu) {
+    mu->ReaderLock();
+  }
+
+  ReaderMutexLock(const ReaderMutexLock&) = delete;
+  ReaderMutexLock(ReaderMutexLock&&) = delete;
+  ReaderMutexLock& operator=(const ReaderMutexLock&) = delete;
+  ReaderMutexLock& operator=(ReaderMutexLock&&) = delete;
+
+  ~ReaderMutexLock() ABSL_UNLOCK_FUNCTION() { this->mu_->ReaderUnlock(); }
+
+ private:
+  Mutex *const mu_;
+};
+
+// WriterMutexLock
+//
+// The `WriterMutexLock` is a helper class, like `MutexLock`, which acquires and
+// releases a write (exclusive) lock on a `Mutex` via RAII.
+class ABSL_SCOPED_LOCKABLE WriterMutexLock {
+ public:
+  explicit WriterMutexLock(Mutex *mu) ABSL_EXCLUSIVE_LOCK_FUNCTION(mu)
+      : mu_(mu) {
+    mu->WriterLock();
+  }
+
+  WriterMutexLock(const WriterMutexLock&) = delete;
+  WriterMutexLock(WriterMutexLock&&) = delete;
+  WriterMutexLock& operator=(const WriterMutexLock&) = delete;
+  WriterMutexLock& operator=(WriterMutexLock&&) = delete;
+
+  ~WriterMutexLock() ABSL_UNLOCK_FUNCTION() { this->mu_->WriterUnlock(); }
+
+ private:
+  Mutex *const mu_;
+};
+
+// -----------------------------------------------------------------------------
+// Condition
+// -----------------------------------------------------------------------------
+//
+// As noted above, `Mutex` contains a number of member functions which take a
+// `Condition` as an argument; clients can wait for conditions to become `true`
+// before attempting to acquire the mutex. These sections are known as
+// "condition critical" sections. To use a `Condition`, you simply need to
+// construct it, and use within an appropriate `Mutex` member function;
+// everything else in the `Condition` class is an implementation detail.
+//
+// A `Condition` is specified as a function pointer which returns a boolean.
+// `Condition` functions should be pure functions -- their results should depend
+// only on passed arguments, should not consult any external state (such as
+// clocks), and should have no side-effects, aside from debug logging. Any
+// objects that the function may access should be limited to those which are
+// constant while the mutex is blocked on the condition (e.g. a stack variable),
+// or objects of state protected explicitly by the mutex.
+//
+// No matter which construction is used for `Condition`, the underlying
+// function pointer / functor / callable must not throw any
+// exceptions. Correctness of `Mutex` / `Condition` is not guaranteed in
+// the face of a throwing `Condition`. (When Abseil is allowed to depend
+// on C++17, these function pointers will be explicitly marked
+// `noexcept`; until then this requirement cannot be enforced in the
+// type system.)
+//
+// Note: to use a `Condition`, you need only construct it and pass it within the
+// appropriate `Mutex' member function, such as `Mutex::Await()`.
+//
+// Example:
+//
+//   // assume count_ is not internal reference count
+//   int count_ ABSL_GUARDED_BY(mu_);
+//
+//   mu_.LockWhen(Condition(+[](int* count) { return *count == 0; },
+//         &count_));
+//
+// When multiple threads are waiting on exactly the same condition, make sure
+// that they are constructed with the same parameters (same pointer to function
+// + arg, or same pointer to object + method), so that the mutex implementation
+// can avoid redundantly evaluating the same condition for each thread.
+class Condition {
+ public:
+  // A Condition that returns the result of "(*func)(arg)"
+  Condition(bool (*func)(void *), void *arg);
+
+  // Templated version for people who are averse to casts.
+  //
+  // To use a lambda, prepend it with unary plus, which converts the lambda
+  // into a function pointer:
+  //     Condition(+[](T* t) { return ...; }, arg).
+  //
+  // Note: lambdas in this case must contain no bound variables.
+  //
+  // See class comment for performance advice.
+  template<typename T>
+  Condition(bool (*func)(T *), T *arg);
+
+  // Templated version for invoking a method that returns a `bool`.
+  //
+  // `Condition(object, &Class::Method)` constructs a `Condition` that evaluates
+  // `object->Method()`.
+  //
+  // Implementation Note: `absl::internal::identity` is used to allow methods to
+  // come from base classes. A simpler signature like
+  // `Condition(T*, bool (T::*)())` does not suffice.
+  template<typename T>
+  Condition(T *object, bool (absl::internal::identity<T>::type::* method)());
+
+  // Same as above, for const members
+  template<typename T>
+  Condition(const T *object,
+            bool (absl::internal::identity<T>::type::* method)() const);
+
+  // A Condition that returns the value of `*cond`
+  explicit Condition(const bool *cond);
+
+  // Templated version for invoking a functor that returns a `bool`.
+  // This approach accepts pointers to non-mutable lambdas, `std::function`,
+  // the result of` std::bind` and user-defined functors that define
+  // `bool F::operator()() const`.
+  //
+  // Example:
+  //
+  //   auto reached = [this, current]() {
+  //     mu_.AssertReaderHeld();                // For annotalysis.
+  //     return processed_ >= current;
+  //   };
+  //   mu_.Await(Condition(&reached));
+
+  // See class comment for performance advice. In particular, if there
+  // might be more than one waiter for the same condition, make sure
+  // that all waiters construct the condition with the same pointers.
+
+  // Implementation note: The second template parameter ensures that this
+  // constructor doesn't participate in overload resolution if T doesn't have
+  // `bool operator() const`.
+  template <typename T, typename E = decltype(
+      static_cast<bool (T::*)() const>(&T::operator()))>
+  explicit Condition(const T *obj)
+      : Condition(obj, static_cast<bool (T::*)() const>(&T::operator())) {}
+
+  // A Condition that always returns `true`.
+  static const Condition kTrue;
+
+  // Evaluates the condition.
+  bool Eval() const;
+
+  // Returns `true` if the two conditions are guaranteed to return the same
+  // value if evaluated at the same time, `false` if the evaluation *may* return
+  // different results.
+  //
+  // Two `Condition` values are guaranteed equal if both their `func` and `arg`
+  // components are the same. A null pointer is equivalent to a `true`
+  // condition.
+  static bool GuaranteedEqual(const Condition *a, const Condition *b);
+
+ private:
+  typedef bool (*InternalFunctionType)(void * arg);
+  typedef bool (Condition::*InternalMethodType)();
+  typedef bool (*InternalMethodCallerType)(void * arg,
+                                           InternalMethodType internal_method);
+
+  bool (*eval_)(const Condition*);  // Actual evaluator
+  InternalFunctionType function_;   // function taking pointer returning bool
+  InternalMethodType method_;       // method returning bool
+  void *arg_;                       // arg of function_ or object of method_
+
+  Condition();        // null constructor used only to create kTrue
+
+  // Various functions eval_ can point to:
+  static bool CallVoidPtrFunction(const Condition*);
+  template <typename T> static bool CastAndCallFunction(const Condition* c);
+  template <typename T> static bool CastAndCallMethod(const Condition* c);
+};
+
+// -----------------------------------------------------------------------------
+// CondVar
+// -----------------------------------------------------------------------------
+//
+// A condition variable, reflecting state evaluated separately outside of the
+// `Mutex` object, which can be signaled to wake callers.
+// This class is not normally needed; use `Mutex` member functions such as
+// `Mutex::Await()` and intrinsic `Condition` abstractions. In rare cases
+// with many threads and many conditions, `CondVar` may be faster.
+//
+// The implementation may deliver signals to any condition variable at
+// any time, even when no call to `Signal()` or `SignalAll()` is made; as a
+// result, upon being awoken, you must check the logical condition you have
+// been waiting upon.
+//
+// Examples:
+//
+// Usage for a thread waiting for some condition C protected by mutex mu:
+//       mu.Lock();
+//       while (!C) { cv->Wait(&mu); }        // releases and reacquires mu
+//       //  C holds; process data
+//       mu.Unlock();
+//
+// Usage to wake T is:
+//       mu.Lock();
+//      // process data, possibly establishing C
+//      if (C) { cv->Signal(); }
+//      mu.Unlock();
+//
+// If C may be useful to more than one waiter, use `SignalAll()` instead of
+// `Signal()`.
+//
+// With this implementation it is efficient to use `Signal()/SignalAll()` inside
+// the locked region; this usage can make reasoning about your program easier.
+//
+class CondVar {
+ public:
+  CondVar();
+  ~CondVar();
+
+  // CondVar::Wait()
+  //
+  // Atomically releases a `Mutex` and blocks on this condition variable.
+  // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+  // spurious wakeup), then reacquires the `Mutex` and returns.
+  //
+  // Requires and ensures that the current thread holds the `Mutex`.
+  void Wait(Mutex *mu);
+
+  // CondVar::WaitWithTimeout()
+  //
+  // Atomically releases a `Mutex` and blocks on this condition variable.
+  // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+  // spurious wakeup), or until the timeout has expired, then reacquires
+  // the `Mutex` and returns.
+  //
+  // Returns true if the timeout has expired without this `CondVar`
+  // being signalled in any manner. If both the timeout has expired
+  // and this `CondVar` has been signalled, the implementation is free
+  // to return `true` or `false`.
+  //
+  // Requires and ensures that the current thread holds the `Mutex`.
+  bool WaitWithTimeout(Mutex *mu, absl::Duration timeout);
+
+  // CondVar::WaitWithDeadline()
+  //
+  // Atomically releases a `Mutex` and blocks on this condition variable.
+  // Waits until awakened by a call to `Signal()` or `SignalAll()` (or a
+  // spurious wakeup), or until the deadline has passed, then reacquires
+  // the `Mutex` and returns.
+  //
+  // Deadlines in the past are equivalent to an immediate deadline.
+  //
+  // Returns true if the deadline has passed without this `CondVar`
+  // being signalled in any manner. If both the deadline has passed
+  // and this `CondVar` has been signalled, the implementation is free
+  // to return `true` or `false`.
+  //
+  // Requires and ensures that the current thread holds the `Mutex`.
+  bool WaitWithDeadline(Mutex *mu, absl::Time deadline);
+
+  // CondVar::Signal()
+  //
+  // Signal this `CondVar`; wake at least one waiter if one exists.
+  void Signal();
+
+  // CondVar::SignalAll()
+  //
+  // Signal this `CondVar`; wake all waiters.
+  void SignalAll();
+
+  // CondVar::EnableDebugLog()
+  //
+  // Causes all subsequent uses of this `CondVar` to be logged via
+  // `ABSL_RAW_LOG(INFO)`. Log entries are tagged with `name` if `name != 0`.
+  // Note: this method substantially reduces `CondVar` performance.
+  void EnableDebugLog(const char *name);
+
+ private:
+#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
+  synchronization_internal::CondVarImpl *impl() { return impl_.get(); }
+  synchronization_internal::SynchronizationStorage<
+      synchronization_internal::CondVarImpl>
+      impl_;
+#else
+  bool WaitCommon(Mutex *mutex, synchronization_internal::KernelTimeout t);
+  void Remove(base_internal::PerThreadSynch *s);
+  void Wakeup(base_internal::PerThreadSynch *w);
+  std::atomic<intptr_t> cv_;  // Condition variable state.
+#endif
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+};
+
+
+// Variants of MutexLock.
+//
+// If you find yourself using one of these, consider instead using
+// Mutex::Unlock() and/or if-statements for clarity.
+
+// MutexLockMaybe
+//
+// MutexLockMaybe is like MutexLock, but is a no-op when mu is null.
+class ABSL_SCOPED_LOCKABLE MutexLockMaybe {
+ public:
+  explicit MutexLockMaybe(Mutex *mu) ABSL_EXCLUSIVE_LOCK_FUNCTION(mu)
+      : mu_(mu) {
+    if (this->mu_ != nullptr) {
+      this->mu_->Lock();
+    }
+  }
+  ~MutexLockMaybe() ABSL_UNLOCK_FUNCTION() {
+    if (this->mu_ != nullptr) { this->mu_->Unlock(); }
+  }
+
+ private:
+  Mutex *const mu_;
+  MutexLockMaybe(const MutexLockMaybe&) = delete;
+  MutexLockMaybe(MutexLockMaybe&&) = delete;
+  MutexLockMaybe& operator=(const MutexLockMaybe&) = delete;
+  MutexLockMaybe& operator=(MutexLockMaybe&&) = delete;
+};
+
+// ReleasableMutexLock
+//
+// ReleasableMutexLock is like MutexLock, but permits `Release()` of its
+// mutex before destruction. `Release()` may be called at most once.
+class ABSL_SCOPED_LOCKABLE ReleasableMutexLock {
+ public:
+  explicit ReleasableMutexLock(Mutex *mu) ABSL_EXCLUSIVE_LOCK_FUNCTION(mu)
+      : mu_(mu) {
+    this->mu_->Lock();
+  }
+  ~ReleasableMutexLock() ABSL_UNLOCK_FUNCTION() {
+    if (this->mu_ != nullptr) { this->mu_->Unlock(); }
+  }
+
+  void Release() ABSL_UNLOCK_FUNCTION();
+
+ private:
+  Mutex *mu_;
+  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock(ReleasableMutexLock&&) = delete;
+  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock& operator=(ReleasableMutexLock&&) = delete;
+};
+
+#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
+inline constexpr Mutex::Mutex(absl::ConstInitType) : impl_(absl::kConstInit) {}
+
+#else
+inline Mutex::Mutex() : mu_(0) {
+  ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
+}
+
+inline constexpr Mutex::Mutex(absl::ConstInitType) : mu_(0) {}
+
+inline CondVar::CondVar() : cv_(0) {}
+#endif
+
+// static
+template <typename T>
+bool Condition::CastAndCallMethod(const Condition *c) {
+  typedef bool (T::*MemberType)();
+  MemberType rm = reinterpret_cast<MemberType>(c->method_);
+  T *x = static_cast<T *>(c->arg_);
+  return (x->*rm)();
+}
+
+// static
+template <typename T>
+bool Condition::CastAndCallFunction(const Condition *c) {
+  typedef bool (*FuncType)(T *);
+  FuncType fn = reinterpret_cast<FuncType>(c->function_);
+  T *x = static_cast<T *>(c->arg_);
+  return (*fn)(x);
+}
+
+template <typename T>
+inline Condition::Condition(bool (*func)(T *), T *arg)
+    : eval_(&CastAndCallFunction<T>),
+      function_(reinterpret_cast<InternalFunctionType>(func)),
+      method_(nullptr),
+      arg_(const_cast<void *>(static_cast<const void *>(arg))) {}
+
+template <typename T>
+inline Condition::Condition(T *object,
+                            bool (absl::internal::identity<T>::type::*method)())
+    : eval_(&CastAndCallMethod<T>),
+      function_(nullptr),
+      method_(reinterpret_cast<InternalMethodType>(method)),
+      arg_(object) {}
+
+template <typename T>
+inline Condition::Condition(const T *object,
+                            bool (absl::internal::identity<T>::type::*method)()
+                                const)
+    : eval_(&CastAndCallMethod<T>),
+      function_(nullptr),
+      method_(reinterpret_cast<InternalMethodType>(method)),
+      arg_(reinterpret_cast<void *>(const_cast<T *>(object))) {}
+
+// Register a hook for profiling support.
+//
+// The function pointer registered here will be called whenever a mutex is
+// contended.  The callback is given the absl/base/cycleclock.h timestamp when
+// waiting began.
+//
+// Calls to this function do not race or block, but there is no ordering
+// guaranteed between calls to this function and call to the provided hook.
+// In particular, the previously registered hook may still be called for some
+// time after this function returns.
+void RegisterMutexProfiler(void (*fn)(int64_t wait_timestamp));
+
+// Register a hook for Mutex tracing.
+//
+// The function pointer registered here will be called whenever a mutex is
+// contended.  The callback is given an opaque handle to the contended mutex,
+// an event name, and the number of wait cycles (as measured by
+// //absl/base/internal/cycleclock.h, and which may not be real
+// "cycle" counts.)
+//
+// The only event name currently sent is "slow release".
+//
+// This has the same memory ordering concerns as RegisterMutexProfiler() above.
+void RegisterMutexTracer(void (*fn)(const char *msg, const void *obj,
+                              int64_t wait_cycles));
+
+// TODO(gfalcon): Combine RegisterMutexProfiler() and RegisterMutexTracer()
+// into a single interface, since they are only ever called in pairs.
+
+// Register a hook for CondVar tracing.
+//
+// The function pointer registered here will be called here on various CondVar
+// events.  The callback is given an opaque handle to the CondVar object and
+// a string identifying the event.  This is thread-safe, but only a single
+// tracer can be registered.
+//
+// Events that can be sent are "Wait", "Unwait", "Signal wakeup", and
+// "SignalAll wakeup".
+//
+// This has the same memory ordering concerns as RegisterMutexProfiler() above.
+void RegisterCondVarTracer(void (*fn)(const char *msg, const void *cv));
+
+// Register a hook for symbolizing stack traces in deadlock detector reports.
+//
+// 'pc' is the program counter being symbolized, 'out' is the buffer to write
+// into, and 'out_size' is the size of the buffer.  This function can return
+// false if symbolizing failed, or true if a NUL-terminated symbol was written
+// to 'out.'
+//
+// This has the same memory ordering concerns as RegisterMutexProfiler() above.
+//
+// DEPRECATED: The default symbolizer function is absl::Symbolize() and the
+// ability to register a different hook for symbolizing stack traces will be
+// removed on or after 2023-05-01.
+ABSL_DEPRECATED("absl::RegisterSymbolizer() is deprecated and will be removed "
+                "on or after 2023-05-01")
+void RegisterSymbolizer(bool (*fn)(const void *pc, char *out, int out_size));
+
+// EnableMutexInvariantDebugging()
+//
+// Enable or disable global support for Mutex invariant debugging.  If enabled,
+// then invariant predicates can be registered per-Mutex for debug checking.
+// See Mutex::EnableInvariantDebugging().
+void EnableMutexInvariantDebugging(bool enabled);
+
+// When in debug mode, and when the feature has been enabled globally, the
+// implementation will keep track of lock ordering and complain (or optionally
+// crash) if a cycle is detected in the acquired-before graph.
+
+// Possible modes of operation for the deadlock detector in debug mode.
+enum class OnDeadlockCycle {
+  kIgnore,  // Neither report on nor attempt to track cycles in lock ordering
+  kReport,  // Report lock cycles to stderr when detected
+  kAbort,  // Report lock cycles to stderr when detected, then abort
+};
+
+// SetMutexDeadlockDetectionMode()
+//
+// Enable or disable global support for detection of potential deadlocks
+// due to Mutex lock ordering inversions.  When set to 'kIgnore', tracking of
+// lock ordering is disabled.  Otherwise, in debug builds, a lock ordering graph
+// will be maintained internally, and detected cycles will be reported in
+// the manner chosen here.
+void SetMutexDeadlockDetectionMode(OnDeadlockCycle mode);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// In some build configurations we pass --detect-odr-violations to the
+// gold linker.  This causes it to flag weak symbol overrides as ODR
+// violations.  Because ODR only applies to C++ and not C,
+// --detect-odr-violations ignores symbols not mangled with C++ names.
+// By changing our extension points to be extern "C", we dodge this
+// check.
+extern "C" {
+void AbslInternalMutexYield();
+}  // extern "C"
+
+#endif  // ABSL_SYNCHRONIZATION_MUTEX_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/notification.cc b/ChattingApp 000/Pods/abseil/absl/synchronization/notification.cc
new file mode 100644
index 0000000..e91b903
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/notification.cc	
@@ -0,0 +1,78 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/synchronization/notification.h"
+
+#include <atomic>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/raw_logging.h"
+#include "absl/synchronization/mutex.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+void Notification::Notify() {
+  MutexLock l(&this->mutex_);
+
+#ifndef NDEBUG
+  if (ABSL_PREDICT_FALSE(notified_yet_.load(std::memory_order_relaxed))) {
+    ABSL_RAW_LOG(
+        FATAL,
+        "Notify() method called more than once for Notification object %p",
+        static_cast<void *>(this));
+  }
+#endif
+
+  notified_yet_.store(true, std::memory_order_release);
+}
+
+Notification::~Notification() {
+  // Make sure that the thread running Notify() exits before the object is
+  // destructed.
+  MutexLock l(&this->mutex_);
+}
+
+void Notification::WaitForNotification() const {
+  if (!HasBeenNotifiedInternal(&this->notified_yet_)) {
+    this->mutex_.LockWhen(Condition(&HasBeenNotifiedInternal,
+                                    &this->notified_yet_));
+    this->mutex_.Unlock();
+  }
+}
+
+bool Notification::WaitForNotificationWithTimeout(
+    absl::Duration timeout) const {
+  bool notified = HasBeenNotifiedInternal(&this->notified_yet_);
+  if (!notified) {
+    notified = this->mutex_.LockWhenWithTimeout(
+        Condition(&HasBeenNotifiedInternal, &this->notified_yet_), timeout);
+    this->mutex_.Unlock();
+  }
+  return notified;
+}
+
+bool Notification::WaitForNotificationWithDeadline(absl::Time deadline) const {
+  bool notified = HasBeenNotifiedInternal(&this->notified_yet_);
+  if (!notified) {
+    notified = this->mutex_.LockWhenWithDeadline(
+        Condition(&HasBeenNotifiedInternal, &this->notified_yet_), deadline);
+    this->mutex_.Unlock();
+  }
+  return notified;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/synchronization/notification.h b/ChattingApp 000/Pods/abseil/absl/synchronization/notification.h
new file mode 100644
index 0000000..9a354ca
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/synchronization/notification.h	
@@ -0,0 +1,123 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// notification.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a `Notification` abstraction, which allows threads
+// to receive notification of a single occurrence of a single event.
+//
+// The `Notification` object maintains a private boolean "notified" state that
+// transitions to `true` at most once. The `Notification` class provides the
+// following primary member functions:
+//   * `HasBeenNotified() `to query its state
+//   * `WaitForNotification*()` to have threads wait until the "notified" state
+//      is `true`.
+//   * `Notify()` to set the notification's "notified" state to `true` and
+//     notify all waiting threads that the event has occurred.
+//     This method may only be called once.
+//
+// Note that while `Notify()` may only be called once, it is perfectly valid to
+// call any of the `WaitForNotification*()` methods multiple times, from
+// multiple threads -- even after the notification's "notified" state has been
+// set -- in which case those methods will immediately return.
+//
+// Note that the lifetime of a `Notification` requires careful consideration;
+// it might not be safe to destroy a notification after calling `Notify()` since
+// it is still legal for other threads to call `WaitForNotification*()` methods
+// on the notification. However, observers responding to a "notified" state of
+// `true` can safely delete the notification without interfering with the call
+// to `Notify()` in the other thread.
+//
+// Memory ordering: For any threads X and Y, if X calls `Notify()`, then any
+// action taken by X before it calls `Notify()` is visible to thread Y after:
+//  * Y returns from `WaitForNotification()`, or
+//  * Y receives a `true` return value from either `HasBeenNotified()` or
+//    `WaitForNotificationWithTimeout()`.
+
+#ifndef ABSL_SYNCHRONIZATION_NOTIFICATION_H_
+#define ABSL_SYNCHRONIZATION_NOTIFICATION_H_
+
+#include <atomic>
+
+#include "absl/base/macros.h"
+#include "absl/synchronization/mutex.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// Notification
+// -----------------------------------------------------------------------------
+class Notification {
+ public:
+  // Initializes the "notified" state to unnotified.
+  Notification() : notified_yet_(false) {}
+  explicit Notification(bool prenotify) : notified_yet_(prenotify) {}
+  Notification(const Notification&) = delete;
+  Notification& operator=(const Notification&) = delete;
+  ~Notification();
+
+  // Notification::HasBeenNotified()
+  //
+  // Returns the value of the notification's internal "notified" state.
+  bool HasBeenNotified() const {
+    return HasBeenNotifiedInternal(&this->notified_yet_);
+  }
+
+  // Notification::WaitForNotification()
+  //
+  // Blocks the calling thread until the notification's "notified" state is
+  // `true`. Note that if `Notify()` has been previously called on this
+  // notification, this function will immediately return.
+  void WaitForNotification() const;
+
+  // Notification::WaitForNotificationWithTimeout()
+  //
+  // Blocks until either the notification's "notified" state is `true` (which
+  // may occur immediately) or the timeout has elapsed, returning the value of
+  // its "notified" state in either case.
+  bool WaitForNotificationWithTimeout(absl::Duration timeout) const;
+
+  // Notification::WaitForNotificationWithDeadline()
+  //
+  // Blocks until either the notification's "notified" state is `true` (which
+  // may occur immediately) or the deadline has expired, returning the value of
+  // its "notified" state in either case.
+  bool WaitForNotificationWithDeadline(absl::Time deadline) const;
+
+  // Notification::Notify()
+  //
+  // Sets the "notified" state of this notification to `true` and wakes waiting
+  // threads. Note: do not call `Notify()` multiple times on the same
+  // `Notification`; calling `Notify()` more than once on the same notification
+  // results in undefined behavior.
+  void Notify();
+
+ private:
+  static inline bool HasBeenNotifiedInternal(
+      const std::atomic<bool>* notified_yet) {
+    return notified_yet->load(std::memory_order_acquire);
+  }
+
+  mutable Mutex mutex_;
+  std::atomic<bool> notified_yet_;  // written under mutex_
+};
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_SYNCHRONIZATION_NOTIFICATION_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/civil_time.cc b/ChattingApp 000/Pods/abseil/absl/time/civil_time.cc
new file mode 100644
index 0000000..ada82cb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/civil_time.cc	
@@ -0,0 +1,175 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/time/civil_time.h"
+
+#include <cstdlib>
+#include <string>
+
+#include "absl/strings/str_cat.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+
+// Since a civil time has a larger year range than absl::Time (64-bit years vs
+// 64-bit seconds, respectively) we normalize years to roughly +/- 400 years
+// around the year 2400, which will produce an equivalent year in a range that
+// absl::Time can handle.
+inline civil_year_t NormalizeYear(civil_year_t year) {
+  return 2400 + year % 400;
+}
+
+// Formats the given CivilSecond according to the given format.
+std::string FormatYearAnd(string_view fmt, CivilSecond cs) {
+  const CivilSecond ncs(NormalizeYear(cs.year()), cs.month(), cs.day(),
+                        cs.hour(), cs.minute(), cs.second());
+  const TimeZone utc = UTCTimeZone();
+  // TODO(absl-team): Avoid conversion of fmt std::string.
+  return StrCat(cs.year(),
+                FormatTime(std::string(fmt), FromCivil(ncs, utc), utc));
+}
+
+template <typename CivilT>
+bool ParseYearAnd(string_view fmt, string_view s, CivilT* c) {
+  // Civil times support a larger year range than absl::Time, so we need to
+  // parse the year separately, normalize it, then use absl::ParseTime on the
+  // normalized std::string.
+  const std::string ss = std::string(s);  // TODO(absl-team): Avoid conversion.
+  const char* const np = ss.c_str();
+  char* endp;
+  errno = 0;
+  const civil_year_t y =
+      std::strtoll(np, &endp, 10);  // NOLINT(runtime/deprecated_fn)
+  if (endp == np || errno == ERANGE) return false;
+  const std::string norm = StrCat(NormalizeYear(y), endp);
+
+  const TimeZone utc = UTCTimeZone();
+  Time t;
+  if (ParseTime(StrCat("%Y", fmt), norm, utc, &t, nullptr)) {
+    const auto cs = ToCivilSecond(t, utc);
+    *c = CivilT(y, cs.month(), cs.day(), cs.hour(), cs.minute(), cs.second());
+    return true;
+  }
+
+  return false;
+}
+
+// Tries to parse the type as a CivilT1, but then assigns the result to the
+// argument of type CivilT2.
+template <typename CivilT1, typename CivilT2>
+bool ParseAs(string_view s, CivilT2* c) {
+  CivilT1 t1;
+  if (ParseCivilTime(s, &t1)) {
+    *c = CivilT2(t1);
+    return true;
+  }
+  return false;
+}
+
+template <typename CivilT>
+bool ParseLenient(string_view s, CivilT* c) {
+  // A fastpath for when the given std::string data parses exactly into the given
+  // type T (e.g., s="YYYY-MM-DD" and CivilT=CivilDay).
+  if (ParseCivilTime(s, c)) return true;
+  // Try parsing as each of the 6 types, trying the most common types first
+  // (based on csearch results).
+  if (ParseAs<CivilDay>(s, c)) return true;
+  if (ParseAs<CivilSecond>(s, c)) return true;
+  if (ParseAs<CivilHour>(s, c)) return true;
+  if (ParseAs<CivilMonth>(s, c)) return true;
+  if (ParseAs<CivilMinute>(s, c)) return true;
+  if (ParseAs<CivilYear>(s, c)) return true;
+  return false;
+}
+}  // namespace
+
+std::string FormatCivilTime(CivilSecond c) {
+  return FormatYearAnd("-%m-%dT%H:%M:%S", c);
+}
+std::string FormatCivilTime(CivilMinute c) {
+  return FormatYearAnd("-%m-%dT%H:%M", c);
+}
+std::string FormatCivilTime(CivilHour c) {
+  return FormatYearAnd("-%m-%dT%H", c);
+}
+std::string FormatCivilTime(CivilDay c) { return FormatYearAnd("-%m-%d", c); }
+std::string FormatCivilTime(CivilMonth c) { return FormatYearAnd("-%m", c); }
+std::string FormatCivilTime(CivilYear c) { return FormatYearAnd("", c); }
+
+bool ParseCivilTime(string_view s, CivilSecond* c) {
+  return ParseYearAnd("-%m-%dT%H:%M:%S", s, c);
+}
+bool ParseCivilTime(string_view s, CivilMinute* c) {
+  return ParseYearAnd("-%m-%dT%H:%M", s, c);
+}
+bool ParseCivilTime(string_view s, CivilHour* c) {
+  return ParseYearAnd("-%m-%dT%H", s, c);
+}
+bool ParseCivilTime(string_view s, CivilDay* c) {
+  return ParseYearAnd("-%m-%d", s, c);
+}
+bool ParseCivilTime(string_view s, CivilMonth* c) {
+  return ParseYearAnd("-%m", s, c);
+}
+bool ParseCivilTime(string_view s, CivilYear* c) {
+  return ParseYearAnd("", s, c);
+}
+
+bool ParseLenientCivilTime(string_view s, CivilSecond* c) {
+  return ParseLenient(s, c);
+}
+bool ParseLenientCivilTime(string_view s, CivilMinute* c) {
+  return ParseLenient(s, c);
+}
+bool ParseLenientCivilTime(string_view s, CivilHour* c) {
+  return ParseLenient(s, c);
+}
+bool ParseLenientCivilTime(string_view s, CivilDay* c) {
+  return ParseLenient(s, c);
+}
+bool ParseLenientCivilTime(string_view s, CivilMonth* c) {
+  return ParseLenient(s, c);
+}
+bool ParseLenientCivilTime(string_view s, CivilYear* c) {
+  return ParseLenient(s, c);
+}
+
+namespace time_internal {
+
+std::ostream& operator<<(std::ostream& os, CivilYear y) {
+  return os << FormatCivilTime(y);
+}
+std::ostream& operator<<(std::ostream& os, CivilMonth m) {
+  return os << FormatCivilTime(m);
+}
+std::ostream& operator<<(std::ostream& os, CivilDay d) {
+  return os << FormatCivilTime(d);
+}
+std::ostream& operator<<(std::ostream& os, CivilHour h) {
+  return os << FormatCivilTime(h);
+}
+std::ostream& operator<<(std::ostream& os, CivilMinute m) {
+  return os << FormatCivilTime(m);
+}
+std::ostream& operator<<(std::ostream& os, CivilSecond s) {
+  return os << FormatCivilTime(s);
+}
+
+}  // namespace time_internal
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/civil_time.h b/ChattingApp 000/Pods/abseil/absl/time/civil_time.h
new file mode 100644
index 0000000..bb46004
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/civil_time.h	
@@ -0,0 +1,538 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: civil_time.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines abstractions for computing with "civil time".
+// The term "civil time" refers to the legally recognized human-scale time
+// that is represented by the six fields `YYYY-MM-DD hh:mm:ss`. A "date"
+// is perhaps the most common example of a civil time (represented here as
+// an `absl::CivilDay`).
+//
+// Modern-day civil time follows the Gregorian Calendar and is a
+// time-zone-independent concept: a civil time of "2015-06-01 12:00:00", for
+// example, is not tied to a time zone. Put another way, a civil time does not
+// map to a unique point in time; a civil time must be mapped to an absolute
+// time *through* a time zone.
+//
+// Because a civil time is what most people think of as "time," it is common to
+// map absolute times to civil times to present to users.
+//
+// Time zones define the relationship between absolute and civil times. Given an
+// absolute or civil time and a time zone, you can compute the other time:
+//
+//   Civil Time = F(Absolute Time, Time Zone)
+//   Absolute Time = G(Civil Time, Time Zone)
+//
+// The Abseil time library allows you to construct such civil times from
+// absolute times; consult time.h for such functionality.
+//
+// This library provides six classes for constructing civil-time objects, and
+// provides several helper functions for rounding, iterating, and performing
+// arithmetic on civil-time objects, while avoiding complications like
+// daylight-saving time (DST):
+//
+//   * `absl::CivilSecond`
+//   * `absl::CivilMinute`
+//   * `absl::CivilHour`
+//   * `absl::CivilDay`
+//   * `absl::CivilMonth`
+//   * `absl::CivilYear`
+//
+// Example:
+//
+//   // Construct a civil-time object for a specific day
+//   const absl::CivilDay cd(1969, 07, 20);
+//
+//   // Construct a civil-time object for a specific second
+//   const absl::CivilSecond cd(2018, 8, 1, 12, 0, 1);
+//
+// Note: In C++14 and later, this library is usable in a constexpr context.
+//
+// Example:
+//
+//   // Valid in C++14
+//   constexpr absl::CivilDay cd(1969, 07, 20);
+
+#ifndef ABSL_TIME_CIVIL_TIME_H_
+#define ABSL_TIME_CIVIL_TIME_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace time_internal {
+struct second_tag : cctz::detail::second_tag {};
+struct minute_tag : second_tag, cctz::detail::minute_tag {};
+struct hour_tag : minute_tag, cctz::detail::hour_tag {};
+struct day_tag : hour_tag, cctz::detail::day_tag {};
+struct month_tag : day_tag, cctz::detail::month_tag {};
+struct year_tag : month_tag, cctz::detail::year_tag {};
+}  // namespace time_internal
+
+// -----------------------------------------------------------------------------
+// CivilSecond, CivilMinute, CivilHour, CivilDay, CivilMonth, CivilYear
+// -----------------------------------------------------------------------------
+//
+// Each of these civil-time types is a simple value type with the same
+// interface for construction and the same six accessors for each of the civil
+// time fields (year, month, day, hour, minute, and second, aka YMDHMS). These
+// classes differ only in their alignment, which is indicated by the type name
+// and specifies the field on which arithmetic operates.
+//
+// CONSTRUCTION
+//
+// Each of the civil-time types can be constructed in two ways: by directly
+// passing to the constructor up to six integers representing the YMDHMS fields,
+// or by copying the YMDHMS fields from a differently aligned civil-time type.
+// Omitted fields are assigned their minimum valid value. Hours, minutes, and
+// seconds will be set to 0, month and day will be set to 1. Since there is no
+// minimum year, the default is 1970.
+//
+// Examples:
+//
+//   absl::CivilDay default_value;               // 1970-01-01 00:00:00
+//
+//   absl::CivilDay a(2015, 2, 3);               // 2015-02-03 00:00:00
+//   absl::CivilDay b(2015, 2, 3, 4, 5, 6);      // 2015-02-03 00:00:00
+//   absl::CivilDay c(2015);                     // 2015-01-01 00:00:00
+//
+//   absl::CivilSecond ss(2015, 2, 3, 4, 5, 6);  // 2015-02-03 04:05:06
+//   absl::CivilMinute mm(ss);                   // 2015-02-03 04:05:00
+//   absl::CivilHour hh(mm);                     // 2015-02-03 04:00:00
+//   absl::CivilDay d(hh);                       // 2015-02-03 00:00:00
+//   absl::CivilMonth m(d);                      // 2015-02-01 00:00:00
+//   absl::CivilYear y(m);                       // 2015-01-01 00:00:00
+//
+//   m = absl::CivilMonth(y);                    // 2015-01-01 00:00:00
+//   d = absl::CivilDay(m);                      // 2015-01-01 00:00:00
+//   hh = absl::CivilHour(d);                    // 2015-01-01 00:00:00
+//   mm = absl::CivilMinute(hh);                 // 2015-01-01 00:00:00
+//   ss = absl::CivilSecond(mm);                 // 2015-01-01 00:00:00
+//
+// Each civil-time class is aligned to the civil-time field indicated in the
+// class's name after normalization. Alignment is performed by setting all the
+// inferior fields to their minimum valid value (as described above). The
+// following are examples of how each of the six types would align the fields
+// representing November 22, 2015 at 12:34:56 in the afternoon. (Note: the
+// string format used here is not important; it's just a shorthand way of
+// showing the six YMDHMS fields.)
+//
+//   absl::CivilSecond   : 2015-11-22 12:34:56
+//   absl::CivilMinute   : 2015-11-22 12:34:00
+//   absl::CivilHour     : 2015-11-22 12:00:00
+//   absl::CivilDay      : 2015-11-22 00:00:00
+//   absl::CivilMonth    : 2015-11-01 00:00:00
+//   absl::CivilYear     : 2015-01-01 00:00:00
+//
+// Each civil-time type performs arithmetic on the field to which it is
+// aligned. This means that adding 1 to an absl::CivilDay increments the day
+// field (normalizing as necessary), and subtracting 7 from an absl::CivilMonth
+// operates on the month field (normalizing as necessary). All arithmetic
+// produces a valid civil time. Difference requires two similarly aligned
+// civil-time objects and returns the scalar answer in units of the objects'
+// alignment. For example, the difference between two absl::CivilHour objects
+// will give an answer in units of civil hours.
+//
+// ALIGNMENT CONVERSION
+//
+// The alignment of a civil-time object cannot change, but the object may be
+// used to construct a new object with a different alignment. This is referred
+// to as "realigning". When realigning to a type with the same or more
+// precision (e.g., absl::CivilDay -> absl::CivilSecond), the conversion may be
+// performed implicitly since no information is lost. However, if information
+// could be discarded (e.g., CivilSecond -> CivilDay), the conversion must
+// be explicit at the call site.
+//
+// Examples:
+//
+//   void UseDay(absl::CivilDay day);
+//
+//   absl::CivilSecond cs;
+//   UseDay(cs);                  // Won't compile because data may be discarded
+//   UseDay(absl::CivilDay(cs));  // OK: explicit conversion
+//
+//   absl::CivilDay cd;
+//   UseDay(cd);                  // OK: no conversion needed
+//
+//   absl::CivilMonth cm;
+//   UseDay(cm);                  // OK: implicit conversion to absl::CivilDay
+//
+// NORMALIZATION
+//
+// Normalization takes invalid values and adjusts them to produce valid values.
+// Within the civil-time library, integer arguments passed to the Civil*
+// constructors may be out-of-range, in which case they are normalized by
+// carrying overflow into a field of courser granularity to produce valid
+// civil-time objects. This normalization enables natural arithmetic on
+// constructor arguments without worrying about the field's range.
+//
+// Examples:
+//
+//   // Out-of-range; normalized to 2016-11-01
+//   absl::CivilDay d(2016, 10, 32);
+//   // Out-of-range, negative: normalized to 2016-10-30T23
+//   absl::CivilHour h1(2016, 10, 31, -1);
+//   // Normalization is cumulative: normalized to 2016-10-30T23
+//   absl::CivilHour h2(2016, 10, 32, -25);
+//
+// Note: If normalization is undesired, you can signal an error by comparing
+// the constructor arguments to the normalized values returned by the YMDHMS
+// properties.
+//
+// COMPARISON
+//
+// Comparison between civil-time objects considers all six YMDHMS fields,
+// regardless of the type's alignment. Comparison between differently aligned
+// civil-time types is allowed.
+//
+// Examples:
+//
+//   absl::CivilDay feb_3(2015, 2, 3);  // 2015-02-03 00:00:00
+//   absl::CivilDay mar_4(2015, 3, 4);  // 2015-03-04 00:00:00
+//   // feb_3 < mar_4
+//   // absl::CivilYear(feb_3) == absl::CivilYear(mar_4)
+//
+//   absl::CivilSecond feb_3_noon(2015, 2, 3, 12, 0, 0);  // 2015-02-03 12:00:00
+//   // feb_3 < feb_3_noon
+//   // feb_3 == absl::CivilDay(feb_3_noon)
+//
+//   // Iterates all the days of February 2015.
+//   for (absl::CivilDay d(2015, 2, 1); d < absl::CivilMonth(2015, 3); ++d) {
+//     // ...
+//   }
+//
+// ARITHMETIC
+//
+// Civil-time types support natural arithmetic operators such as addition,
+// subtraction, and difference. Arithmetic operates on the civil-time field
+// indicated in the type's name. Difference operators require arguments with
+// the same alignment and return the answer in units of the alignment.
+//
+// Example:
+//
+//   absl::CivilDay a(2015, 2, 3);
+//   ++a;                              // 2015-02-04 00:00:00
+//   --a;                              // 2015-02-03 00:00:00
+//   absl::CivilDay b = a + 1;         // 2015-02-04 00:00:00
+//   absl::CivilDay c = 1 + b;         // 2015-02-05 00:00:00
+//   int n = c - a;                    // n = 2 (civil days)
+//   int m = c - absl::CivilMonth(c);  // Won't compile: different types.
+//
+// ACCESSORS
+//
+// Each civil-time type has accessors for all six of the civil-time fields:
+// year, month, day, hour, minute, and second.
+//
+// civil_year_t year()
+// int          month()
+// int          day()
+// int          hour()
+// int          minute()
+// int          second()
+//
+// Recall that fields inferior to the type's alignment will be set to their
+// minimum valid value.
+//
+// Example:
+//
+//   absl::CivilDay d(2015, 6, 28);
+//   // d.year() == 2015
+//   // d.month() == 6
+//   // d.day() == 28
+//   // d.hour() == 0
+//   // d.minute() == 0
+//   // d.second() == 0
+//
+// CASE STUDY: Adding a month to January 31.
+//
+// One of the classic questions that arises when considering a civil time
+// library (or a date library or a date/time library) is this:
+//   "What is the result of adding a month to January 31?"
+// This is an interesting question because it is unclear what is meant by a
+// "month", and several different answers are possible, depending on context:
+//
+//   1. March 3 (or 2 if a leap year), if "add a month" means to add a month to
+//      the current month, and adjust the date to overflow the extra days into
+//      March. In this case the result of "February 31" would be normalized as
+//      within the civil-time library.
+//   2. February 28 (or 29 if a leap year), if "add a month" means to add a
+//      month, and adjust the date while holding the resulting month constant.
+//      In this case, the result of "February 31" would be truncated to the last
+//      day in February.
+//   3. An error. The caller may get some error, an exception, an invalid date
+//      object, or perhaps return `false`. This may make sense because there is
+//      no single unambiguously correct answer to the question.
+//
+// Practically speaking, any answer that is not what the programmer intended
+// is the wrong answer.
+//
+// The Abseil time library avoids this problem by making it impossible to
+// ask ambiguous questions. All civil-time objects are aligned to a particular
+// civil-field boundary (such as aligned to a year, month, day, hour, minute,
+// or second), and arithmetic operates on the field to which the object is
+// aligned. This means that in order to "add a month" the object must first be
+// aligned to a month boundary, which is equivalent to the first day of that
+// month.
+//
+// Of course, there are ways to compute an answer the question at hand using
+// this Abseil time library, but they require the programmer to be explicit
+// about the answer they expect. To illustrate, let's see how to compute all
+// three of the above possible answers to the question of "Jan 31 plus 1
+// month":
+//
+// Example:
+//
+//   const absl::CivilDay d(2015, 1, 31);
+//
+//   // Answer 1:
+//   // Add 1 to the month field in the constructor, and rely on normalization.
+//   const auto normalized = absl::CivilDay(d.year(), d.month() + 1, d.day());
+//   // normalized == 2015-03-03 (aka Feb 31)
+//
+//   // Answer 2:
+//   // Add 1 to month field, capping to the end of next month.
+//   const auto next_month = absl::CivilMonth(d) + 1;
+//   const auto last_day_of_next_month = absl::CivilDay(next_month + 1) - 1;
+//   const auto capped = std::min(normalized, last_day_of_next_month);
+//   // capped == 2015-02-28
+//
+//   // Answer 3:
+//   // Signal an error if the normalized answer is not in next month.
+//   if (absl::CivilMonth(normalized) != next_month) {
+//     // error, month overflow
+//   }
+//
+using CivilSecond =
+    time_internal::cctz::detail::civil_time<time_internal::second_tag>;
+using CivilMinute =
+    time_internal::cctz::detail::civil_time<time_internal::minute_tag>;
+using CivilHour =
+    time_internal::cctz::detail::civil_time<time_internal::hour_tag>;
+using CivilDay =
+    time_internal::cctz::detail::civil_time<time_internal::day_tag>;
+using CivilMonth =
+    time_internal::cctz::detail::civil_time<time_internal::month_tag>;
+using CivilYear =
+    time_internal::cctz::detail::civil_time<time_internal::year_tag>;
+
+// civil_year_t
+//
+// Type alias of a civil-time year value. This type is guaranteed to (at least)
+// support any year value supported by `time_t`.
+//
+// Example:
+//
+//   absl::CivilSecond cs = ...;
+//   absl::civil_year_t y = cs.year();
+//   cs = absl::CivilSecond(y, 1, 1, 0, 0, 0);  // CivilSecond(CivilYear(cs))
+//
+using civil_year_t = time_internal::cctz::year_t;
+
+// civil_diff_t
+//
+// Type alias of the difference between two civil-time values.
+// This type is used to indicate arguments that are not
+// normalized (such as parameters to the civil-time constructors), the results
+// of civil-time subtraction, or the operand to civil-time addition.
+//
+// Example:
+//
+//   absl::civil_diff_t n_sec = cs1 - cs2;             // cs1 == cs2 + n_sec;
+//
+using civil_diff_t = time_internal::cctz::diff_t;
+
+// Weekday::monday, Weekday::tuesday, Weekday::wednesday, Weekday::thursday,
+// Weekday::friday, Weekday::saturday, Weekday::sunday
+//
+// The Weekday enum class represents the civil-time concept of a "weekday" with
+// members for all days of the week.
+//
+//   absl::Weekday wd = absl::Weekday::thursday;
+//
+using Weekday = time_internal::cctz::weekday;
+
+// GetWeekday()
+//
+// Returns the absl::Weekday for the given (realigned) civil-time value.
+//
+// Example:
+//
+//   absl::CivilDay a(2015, 8, 13);
+//   absl::Weekday wd = absl::GetWeekday(a);  // wd == absl::Weekday::thursday
+//
+inline Weekday GetWeekday(CivilSecond cs) {
+  return time_internal::cctz::get_weekday(cs);
+}
+
+// NextWeekday()
+// PrevWeekday()
+//
+// Returns the absl::CivilDay that strictly follows or precedes a given
+// absl::CivilDay, and that falls on the given absl::Weekday.
+//
+// Example, given the following month:
+//
+//       August 2015
+//   Su Mo Tu We Th Fr Sa
+//                      1
+//    2  3  4  5  6  7  8
+//    9 10 11 12 13 14 15
+//   16 17 18 19 20 21 22
+//   23 24 25 26 27 28 29
+//   30 31
+//
+//   absl::CivilDay a(2015, 8, 13);
+//   // absl::GetWeekday(a) == absl::Weekday::thursday
+//   absl::CivilDay b = absl::NextWeekday(a, absl::Weekday::thursday);
+//   // b = 2015-08-20
+//   absl::CivilDay c = absl::PrevWeekday(a, absl::Weekday::thursday);
+//   // c = 2015-08-06
+//
+//   absl::CivilDay d = ...
+//   // Gets the following Thursday if d is not already Thursday
+//   absl::CivilDay thurs1 = absl::NextWeekday(d - 1, absl::Weekday::thursday);
+//   // Gets the previous Thursday if d is not already Thursday
+//   absl::CivilDay thurs2 = absl::PrevWeekday(d + 1, absl::Weekday::thursday);
+//
+inline CivilDay NextWeekday(CivilDay cd, Weekday wd) {
+  return CivilDay(time_internal::cctz::next_weekday(cd, wd));
+}
+inline CivilDay PrevWeekday(CivilDay cd, Weekday wd) {
+  return CivilDay(time_internal::cctz::prev_weekday(cd, wd));
+}
+
+// GetYearDay()
+//
+// Returns the day-of-year for the given (realigned) civil-time value.
+//
+// Example:
+//
+//   absl::CivilDay a(2015, 1, 1);
+//   int yd_jan_1 = absl::GetYearDay(a);   // yd_jan_1 = 1
+//   absl::CivilDay b(2015, 12, 31);
+//   int yd_dec_31 = absl::GetYearDay(b);  // yd_dec_31 = 365
+//
+inline int GetYearDay(CivilSecond cs) {
+  return time_internal::cctz::get_yearday(cs);
+}
+
+// FormatCivilTime()
+//
+// Formats the given civil-time value into a string value of the following
+// format:
+//
+//  Type        | Format
+//  ---------------------------------
+//  CivilSecond | YYYY-MM-DDTHH:MM:SS
+//  CivilMinute | YYYY-MM-DDTHH:MM
+//  CivilHour   | YYYY-MM-DDTHH
+//  CivilDay    | YYYY-MM-DD
+//  CivilMonth  | YYYY-MM
+//  CivilYear   | YYYY
+//
+// Example:
+//
+//   absl::CivilDay d = absl::CivilDay(1969, 7, 20);
+//   std::string day_string = absl::FormatCivilTime(d);  // "1969-07-20"
+//
+std::string FormatCivilTime(CivilSecond c);
+std::string FormatCivilTime(CivilMinute c);
+std::string FormatCivilTime(CivilHour c);
+std::string FormatCivilTime(CivilDay c);
+std::string FormatCivilTime(CivilMonth c);
+std::string FormatCivilTime(CivilYear c);
+
+// absl::ParseCivilTime()
+//
+// Parses a civil-time value from the specified `absl::string_view` into the
+// passed output parameter. Returns `true` upon successful parsing.
+//
+// The expected form of the input string is as follows:
+//
+//  Type        | Format
+//  ---------------------------------
+//  CivilSecond | YYYY-MM-DDTHH:MM:SS
+//  CivilMinute | YYYY-MM-DDTHH:MM
+//  CivilHour   | YYYY-MM-DDTHH
+//  CivilDay    | YYYY-MM-DD
+//  CivilMonth  | YYYY-MM
+//  CivilYear   | YYYY
+//
+// Example:
+//
+//   absl::CivilDay d;
+//   bool ok = absl::ParseCivilTime("2018-01-02", &d); // OK
+//
+// Note that parsing will fail if the string's format does not match the
+// expected type exactly. `ParseLenientCivilTime()` below is more lenient.
+//
+bool ParseCivilTime(absl::string_view s, CivilSecond* c);
+bool ParseCivilTime(absl::string_view s, CivilMinute* c);
+bool ParseCivilTime(absl::string_view s, CivilHour* c);
+bool ParseCivilTime(absl::string_view s, CivilDay* c);
+bool ParseCivilTime(absl::string_view s, CivilMonth* c);
+bool ParseCivilTime(absl::string_view s, CivilYear* c);
+
+// ParseLenientCivilTime()
+//
+// Parses any of the formats accepted by `absl::ParseCivilTime()`, but is more
+// lenient if the format of the string does not exactly match the associated
+// type.
+//
+// Example:
+//
+//   absl::CivilDay d;
+//   bool ok = absl::ParseLenientCivilTime("1969-07-20", &d); // OK
+//   ok = absl::ParseLenientCivilTime("1969-07-20T10", &d);   // OK: T10 floored
+//   ok = absl::ParseLenientCivilTime("1969-07", &d);   // OK: day defaults to 1
+//
+bool ParseLenientCivilTime(absl::string_view s, CivilSecond* c);
+bool ParseLenientCivilTime(absl::string_view s, CivilMinute* c);
+bool ParseLenientCivilTime(absl::string_view s, CivilHour* c);
+bool ParseLenientCivilTime(absl::string_view s, CivilDay* c);
+bool ParseLenientCivilTime(absl::string_view s, CivilMonth* c);
+bool ParseLenientCivilTime(absl::string_view s, CivilYear* c);
+
+namespace time_internal {  // For functions found via ADL on civil-time tags.
+
+// Streaming Operators
+//
+// Each civil-time type may be sent to an output stream using operator<<().
+// The result matches the string produced by `FormatCivilTime()`.
+//
+// Example:
+//
+//   absl::CivilDay d = absl::CivilDay(1969, 7, 20);
+//   std::cout << "Date is: " << d << "\n";
+//
+std::ostream& operator<<(std::ostream& os, CivilYear y);
+std::ostream& operator<<(std::ostream& os, CivilMonth m);
+std::ostream& operator<<(std::ostream& os, CivilDay d);
+std::ostream& operator<<(std::ostream& os, CivilHour h);
+std::ostream& operator<<(std::ostream& os, CivilMinute m);
+std::ostream& operator<<(std::ostream& os, CivilSecond s);
+
+}  // namespace time_internal
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_CIVIL_TIME_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/clock.cc b/ChattingApp 000/Pods/abseil/absl/time/clock.cc
new file mode 100644
index 0000000..3b895c3
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/clock.cc	
@@ -0,0 +1,569 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/time/clock.h"
+
+#include "absl/base/attributes.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include <algorithm>
+#include <atomic>
+#include <cerrno>
+#include <cstdint>
+#include <ctime>
+#include <limits>
+
+#include "absl/base/internal/spinlock.h"
+#include "absl/base/internal/unscaledcycleclock.h"
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/base/thread_annotations.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+Time Now() {
+  // TODO(bww): Get a timespec instead so we don't have to divide.
+  int64_t n = absl::GetCurrentTimeNanos();
+  if (n >= 0) {
+    return time_internal::FromUnixDuration(
+        time_internal::MakeDuration(n / 1000000000, n % 1000000000 * 4));
+  }
+  return time_internal::FromUnixDuration(absl::Nanoseconds(n));
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// Decide if we should use the fast GetCurrentTimeNanos() algorithm
+// based on the cyclecounter, otherwise just get the time directly
+// from the OS on every call. This can be chosen at compile-time via
+// -DABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS=[0|1]
+#ifndef ABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+#define ABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS 1
+#else
+#define ABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS 0
+#endif
+#endif
+
+#if defined(__APPLE__) || defined(_WIN32)
+#include "absl/time/internal/get_current_time_chrono.inc"
+#else
+#include "absl/time/internal/get_current_time_posix.inc"
+#endif
+
+// Allows override by test.
+#ifndef GET_CURRENT_TIME_NANOS_FROM_SYSTEM
+#define GET_CURRENT_TIME_NANOS_FROM_SYSTEM() \
+  ::absl::time_internal::GetCurrentTimeNanosFromSystem()
+#endif
+
+#if !ABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+int64_t GetCurrentTimeNanos() {
+  return GET_CURRENT_TIME_NANOS_FROM_SYSTEM();
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
+#else  // Use the cyclecounter-based implementation below.
+
+// Allows override by test.
+#ifndef GET_CURRENT_TIME_NANOS_CYCLECLOCK_NOW
+#define GET_CURRENT_TIME_NANOS_CYCLECLOCK_NOW() \
+  ::absl::time_internal::UnscaledCycleClockWrapperForGetCurrentTime::Now()
+#endif
+
+// The following counters are used only by the test code.
+static int64_t stats_initializations;
+static int64_t stats_reinitializations;
+static int64_t stats_calibrations;
+static int64_t stats_slow_paths;
+static int64_t stats_fast_slow_paths;
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+// This is a friend wrapper around UnscaledCycleClock::Now()
+// (needed to access UnscaledCycleClock).
+class UnscaledCycleClockWrapperForGetCurrentTime {
+ public:
+  static int64_t Now() { return base_internal::UnscaledCycleClock::Now(); }
+};
+}  // namespace time_internal
+
+// uint64_t is used in this module to provide an extra bit in multiplications
+
+// Return the time in ns as told by the kernel interface.  Place in *cycleclock
+// the value of the cycleclock at about the time of the syscall.
+// This call represents the time base that this module synchronizes to.
+// Ensures that *cycleclock does not step back by up to (1 << 16) from
+// last_cycleclock, to discard small backward counter steps.  (Larger steps are
+// assumed to be complete resyncs, which shouldn't happen.  If they do, a full
+// reinitialization of the outer algorithm should occur.)
+static int64_t GetCurrentTimeNanosFromKernel(uint64_t last_cycleclock,
+                                             uint64_t *cycleclock) {
+  // We try to read clock values at about the same time as the kernel clock.
+  // This value gets adjusted up or down as estimate of how long that should
+  // take, so we can reject attempts that take unusually long.
+  static std::atomic<uint64_t> approx_syscall_time_in_cycles{10 * 1000};
+
+  uint64_t local_approx_syscall_time_in_cycles =  // local copy
+      approx_syscall_time_in_cycles.load(std::memory_order_relaxed);
+
+  int64_t current_time_nanos_from_system;
+  uint64_t before_cycles;
+  uint64_t after_cycles;
+  uint64_t elapsed_cycles;
+  int loops = 0;
+  do {
+    before_cycles = GET_CURRENT_TIME_NANOS_CYCLECLOCK_NOW();
+    current_time_nanos_from_system = GET_CURRENT_TIME_NANOS_FROM_SYSTEM();
+    after_cycles = GET_CURRENT_TIME_NANOS_CYCLECLOCK_NOW();
+    // elapsed_cycles is unsigned, so is large on overflow
+    elapsed_cycles = after_cycles - before_cycles;
+    if (elapsed_cycles >= local_approx_syscall_time_in_cycles &&
+        ++loops == 20) {  // clock changed frequencies?  Back off.
+      loops = 0;
+      if (local_approx_syscall_time_in_cycles < 1000 * 1000) {
+        local_approx_syscall_time_in_cycles =
+            (local_approx_syscall_time_in_cycles + 1) << 1;
+      }
+      approx_syscall_time_in_cycles.store(
+          local_approx_syscall_time_in_cycles,
+          std::memory_order_relaxed);
+    }
+  } while (elapsed_cycles >= local_approx_syscall_time_in_cycles ||
+           last_cycleclock - after_cycles < (static_cast<uint64_t>(1) << 16));
+
+  // Number of times in a row we've seen a kernel time call take substantially
+  // less than approx_syscall_time_in_cycles.
+  static std::atomic<uint32_t> seen_smaller{ 0 };
+
+  // Adjust approx_syscall_time_in_cycles to be within a factor of 2
+  // of the typical time to execute one iteration of the loop above.
+  if ((local_approx_syscall_time_in_cycles >> 1) < elapsed_cycles) {
+    // measured time is no smaller than half current approximation
+    seen_smaller.store(0, std::memory_order_relaxed);
+  } else if (seen_smaller.fetch_add(1, std::memory_order_relaxed) >= 3) {
+    // smaller delays several times in a row; reduce approximation by 12.5%
+    const uint64_t new_approximation =
+        local_approx_syscall_time_in_cycles -
+        (local_approx_syscall_time_in_cycles >> 3);
+    approx_syscall_time_in_cycles.store(new_approximation,
+                                        std::memory_order_relaxed);
+    seen_smaller.store(0, std::memory_order_relaxed);
+  }
+
+  *cycleclock = after_cycles;
+  return current_time_nanos_from_system;
+}
+
+
+// ---------------------------------------------------------------------
+// An implementation of reader-write locks that use no atomic ops in the read
+// case.  This is a generalization of Lamport's method for reading a multiword
+// clock.  Increment a word on each write acquisition, using the low-order bit
+// as a spinlock; the word is the high word of the "clock".  Readers read the
+// high word, then all other data, then the high word again, and repeat the
+// read if the reads of the high words yields different answers, or an odd
+// value (either case suggests possible interference from a writer).
+// Here we use a spinlock to ensure only one writer at a time, rather than
+// spinning on the bottom bit of the word to benefit from SpinLock
+// spin-delay tuning.
+
+// Acquire seqlock (*seq) and return the value to be written to unlock.
+static inline uint64_t SeqAcquire(std::atomic<uint64_t> *seq) {
+  uint64_t x = seq->fetch_add(1, std::memory_order_relaxed);
+
+  // We put a release fence between update to *seq and writes to shared data.
+  // Thus all stores to shared data are effectively release operations and
+  // update to *seq above cannot be re-ordered past any of them.  Note that
+  // this barrier is not for the fetch_add above.  A release barrier for the
+  // fetch_add would be before it, not after.
+  std::atomic_thread_fence(std::memory_order_release);
+
+  return x + 2;   // original word plus 2
+}
+
+// Release seqlock (*seq) by writing x to it---a value previously returned by
+// SeqAcquire.
+static inline void SeqRelease(std::atomic<uint64_t> *seq, uint64_t x) {
+  // The unlock store to *seq must have release ordering so that all
+  // updates to shared data must finish before this store.
+  seq->store(x, std::memory_order_release);  // release lock for readers
+}
+
+// ---------------------------------------------------------------------
+
+// "nsscaled" is unit of time equal to a (2**kScale)th of a nanosecond.
+enum { kScale = 30 };
+
+// The minimum interval between samples of the time base.
+// We pick enough time to amortize the cost of the sample,
+// to get a reasonably accurate cycle counter rate reading,
+// and not so much that calculations will overflow 64-bits.
+static const uint64_t kMinNSBetweenSamples = 2000 << 20;
+
+// We require that kMinNSBetweenSamples shifted by kScale
+// have at least a bit left over for 64-bit calculations.
+static_assert(((kMinNSBetweenSamples << (kScale + 1)) >> (kScale + 1)) ==
+               kMinNSBetweenSamples,
+               "cannot represent kMaxBetweenSamplesNSScaled");
+
+// A reader-writer lock protecting the static locations below.
+// See SeqAcquire() and SeqRelease() above.
+static absl::base_internal::SpinLock lock(
+    absl::base_internal::kLinkerInitialized);
+static std::atomic<uint64_t> seq(0);
+
+// data from a sample of the kernel's time value
+struct TimeSampleAtomic {
+  std::atomic<uint64_t> raw_ns;              // raw kernel time
+  std::atomic<uint64_t> base_ns;             // our estimate of time
+  std::atomic<uint64_t> base_cycles;         // cycle counter reading
+  std::atomic<uint64_t> nsscaled_per_cycle;  // cycle period
+  // cycles before we'll sample again (a scaled reciprocal of the period,
+  // to avoid a division on the fast path).
+  std::atomic<uint64_t> min_cycles_per_sample;
+};
+// Same again, but with non-atomic types
+struct TimeSample {
+  uint64_t raw_ns;                 // raw kernel time
+  uint64_t base_ns;                // our estimate of time
+  uint64_t base_cycles;            // cycle counter reading
+  uint64_t nsscaled_per_cycle;     // cycle period
+  uint64_t min_cycles_per_sample;  // approx cycles before next sample
+};
+
+static struct TimeSampleAtomic last_sample;   // the last sample; under seq
+
+static int64_t GetCurrentTimeNanosSlowPath() ABSL_ATTRIBUTE_COLD;
+
+// Read the contents of *atomic into *sample.
+// Each field is read atomically, but to maintain atomicity between fields,
+// the access must be done under a lock.
+static void ReadTimeSampleAtomic(const struct TimeSampleAtomic *atomic,
+                                 struct TimeSample *sample) {
+  sample->base_ns = atomic->base_ns.load(std::memory_order_relaxed);
+  sample->base_cycles = atomic->base_cycles.load(std::memory_order_relaxed);
+  sample->nsscaled_per_cycle =
+      atomic->nsscaled_per_cycle.load(std::memory_order_relaxed);
+  sample->min_cycles_per_sample =
+      atomic->min_cycles_per_sample.load(std::memory_order_relaxed);
+  sample->raw_ns = atomic->raw_ns.load(std::memory_order_relaxed);
+}
+
+// Public routine.
+// Algorithm:  We wish to compute real time from a cycle counter.  In normal
+// operation, we construct a piecewise linear approximation to the kernel time
+// source, using the cycle counter value.  The start of each line segment is at
+// the same point as the end of the last, but may have a different slope (that
+// is, a different idea of the cycle counter frequency).  Every couple of
+// seconds, the kernel time source is sampled and compared with the current
+// approximation.  A new slope is chosen that, if followed for another couple
+// of seconds, will correct the error at the current position.  The information
+// for a sample is in the "last_sample" struct.  The linear approximation is
+//   estimated_time = last_sample.base_ns +
+//     last_sample.ns_per_cycle * (counter_reading - last_sample.base_cycles)
+// (ns_per_cycle is actually stored in different units and scaled, to avoid
+// overflow).  The base_ns of the next linear approximation is the
+// estimated_time using the last approximation; the base_cycles is the cycle
+// counter value at that time; the ns_per_cycle is the number of ns per cycle
+// measured since the last sample, but adjusted so that most of the difference
+// between the estimated_time and the kernel time will be corrected by the
+// estimated time to the next sample.  In normal operation, this algorithm
+// relies on:
+// - the cycle counter and kernel time rates not changing a lot in a few
+//   seconds.
+// - the client calling into the code often compared to a couple of seconds, so
+//   the time to the next correction can be estimated.
+// Any time ns_per_cycle is not known, a major error is detected, or the
+// assumption about frequent calls is violated, the implementation returns the
+// kernel time.  It records sufficient data that a linear approximation can
+// resume a little later.
+
+int64_t GetCurrentTimeNanos() {
+  // read the data from the "last_sample" struct (but don't need raw_ns yet)
+  // The reads of "seq" and test of the values emulate a reader lock.
+  uint64_t base_ns;
+  uint64_t base_cycles;
+  uint64_t nsscaled_per_cycle;
+  uint64_t min_cycles_per_sample;
+  uint64_t seq_read0;
+  uint64_t seq_read1;
+
+  // If we have enough information to interpolate, the value returned will be
+  // derived from this cycleclock-derived time estimate.  On some platforms
+  // (POWER) the function to retrieve this value has enough complexity to
+  // contribute to register pressure - reading it early before initializing
+  // the other pieces of the calculation minimizes spill/restore instructions,
+  // minimizing icache cost.
+  uint64_t now_cycles = GET_CURRENT_TIME_NANOS_CYCLECLOCK_NOW();
+
+  // Acquire pairs with the barrier in SeqRelease - if this load sees that
+  // store, the shared-data reads necessarily see that SeqRelease's updates
+  // to the same shared data.
+  seq_read0 = seq.load(std::memory_order_acquire);
+
+  base_ns = last_sample.base_ns.load(std::memory_order_relaxed);
+  base_cycles = last_sample.base_cycles.load(std::memory_order_relaxed);
+  nsscaled_per_cycle =
+      last_sample.nsscaled_per_cycle.load(std::memory_order_relaxed);
+  min_cycles_per_sample =
+      last_sample.min_cycles_per_sample.load(std::memory_order_relaxed);
+
+  // This acquire fence pairs with the release fence in SeqAcquire.  Since it
+  // is sequenced between reads of shared data and seq_read1, the reads of
+  // shared data are effectively acquiring.
+  std::atomic_thread_fence(std::memory_order_acquire);
+
+  // The shared-data reads are effectively acquire ordered, and the
+  // shared-data writes are effectively release ordered. Therefore if our
+  // shared-data reads see any of a particular update's shared-data writes,
+  // seq_read1 is guaranteed to see that update's SeqAcquire.
+  seq_read1 = seq.load(std::memory_order_relaxed);
+
+  // Fast path.  Return if min_cycles_per_sample has not yet elapsed since the
+  // last sample, and we read a consistent sample.  The fast path activates
+  // only when min_cycles_per_sample is non-zero, which happens when we get an
+  // estimate for the cycle time.  The predicate will fail if now_cycles <
+  // base_cycles, or if some other thread is in the slow path.
+  //
+  // Since we now read now_cycles before base_ns, it is possible for now_cycles
+  // to be less than base_cycles (if we were interrupted between those loads and
+  // last_sample was updated). This is harmless, because delta_cycles will wrap
+  // and report a time much much bigger than min_cycles_per_sample. In that case
+  // we will take the slow path.
+  uint64_t delta_cycles = now_cycles - base_cycles;
+  if (seq_read0 == seq_read1 && (seq_read0 & 1) == 0 &&
+      delta_cycles < min_cycles_per_sample) {
+    return base_ns + ((delta_cycles * nsscaled_per_cycle) >> kScale);
+  }
+  return GetCurrentTimeNanosSlowPath();
+}
+
+// Return (a << kScale)/b.
+// Zero is returned if b==0.   Scaling is performed internally to
+// preserve precision without overflow.
+static uint64_t SafeDivideAndScale(uint64_t a, uint64_t b) {
+  // Find maximum safe_shift so that
+  //  0 <= safe_shift <= kScale  and  (a << safe_shift) does not overflow.
+  int safe_shift = kScale;
+  while (((a << safe_shift) >> safe_shift) != a) {
+    safe_shift--;
+  }
+  uint64_t scaled_b = b >> (kScale - safe_shift);
+  uint64_t quotient = 0;
+  if (scaled_b != 0) {
+    quotient = (a << safe_shift) / scaled_b;
+  }
+  return quotient;
+}
+
+static uint64_t UpdateLastSample(
+    uint64_t now_cycles, uint64_t now_ns, uint64_t delta_cycles,
+    const struct TimeSample *sample) ABSL_ATTRIBUTE_COLD;
+
+// The slow path of GetCurrentTimeNanos().  This is taken while gathering
+// initial samples, when enough time has elapsed since the last sample, and if
+// any other thread is writing to last_sample.
+//
+// Manually mark this 'noinline' to minimize stack frame size of the fast
+// path.  Without this, sometimes a compiler may inline this big block of code
+// into the fast path.  That causes lots of register spills and reloads that
+// are unnecessary unless the slow path is taken.
+//
+// TODO(absl-team): Remove this attribute when our compiler is smart enough
+// to do the right thing.
+ABSL_ATTRIBUTE_NOINLINE
+static int64_t GetCurrentTimeNanosSlowPath() ABSL_LOCKS_EXCLUDED(lock) {
+  // Serialize access to slow-path.  Fast-path readers are not blocked yet, and
+  // code below must not modify last_sample until the seqlock is acquired.
+  lock.Lock();
+
+  // Sample the kernel time base.  This is the definition of
+  // "now" if we take the slow path.
+  static uint64_t last_now_cycles;  // protected by lock
+  uint64_t now_cycles;
+  uint64_t now_ns = GetCurrentTimeNanosFromKernel(last_now_cycles, &now_cycles);
+  last_now_cycles = now_cycles;
+
+  uint64_t estimated_base_ns;
+
+  // ----------
+  // Read the "last_sample" values again; this time holding the write lock.
+  struct TimeSample sample;
+  ReadTimeSampleAtomic(&last_sample, &sample);
+
+  // ----------
+  // Try running the fast path again; another thread may have updated the
+  // sample between our run of the fast path and the sample we just read.
+  uint64_t delta_cycles = now_cycles - sample.base_cycles;
+  if (delta_cycles < sample.min_cycles_per_sample) {
+    // Another thread updated the sample.  This path does not take the seqlock
+    // so that blocked readers can make progress without blocking new readers.
+    estimated_base_ns = sample.base_ns +
+        ((delta_cycles * sample.nsscaled_per_cycle) >> kScale);
+    stats_fast_slow_paths++;
+  } else {
+    estimated_base_ns =
+        UpdateLastSample(now_cycles, now_ns, delta_cycles, &sample);
+  }
+
+  lock.Unlock();
+
+  return estimated_base_ns;
+}
+
+// Main part of the algorithm.  Locks out readers, updates the approximation
+// using the new sample from the kernel, and stores the result in last_sample
+// for readers.  Returns the new estimated time.
+static uint64_t UpdateLastSample(uint64_t now_cycles, uint64_t now_ns,
+                                 uint64_t delta_cycles,
+                                 const struct TimeSample *sample)
+    ABSL_EXCLUSIVE_LOCKS_REQUIRED(lock) {
+  uint64_t estimated_base_ns = now_ns;
+  uint64_t lock_value = SeqAcquire(&seq);  // acquire seqlock to block readers
+
+  // The 5s in the next if-statement limits the time for which we will trust
+  // the cycle counter and our last sample to give a reasonable result.
+  // Errors in the rate of the source clock can be multiplied by the ratio
+  // between this limit and kMinNSBetweenSamples.
+  if (sample->raw_ns == 0 ||  // no recent sample, or clock went backwards
+      sample->raw_ns + static_cast<uint64_t>(5) * 1000 * 1000 * 1000 < now_ns ||
+      now_ns < sample->raw_ns || now_cycles < sample->base_cycles) {
+    // record this sample, and forget any previously known slope.
+    last_sample.raw_ns.store(now_ns, std::memory_order_relaxed);
+    last_sample.base_ns.store(estimated_base_ns, std::memory_order_relaxed);
+    last_sample.base_cycles.store(now_cycles, std::memory_order_relaxed);
+    last_sample.nsscaled_per_cycle.store(0, std::memory_order_relaxed);
+    last_sample.min_cycles_per_sample.store(0, std::memory_order_relaxed);
+    stats_initializations++;
+  } else if (sample->raw_ns + 500 * 1000 * 1000 < now_ns &&
+             sample->base_cycles + 50 < now_cycles) {
+    // Enough time has passed to compute the cycle time.
+    if (sample->nsscaled_per_cycle != 0) {  // Have a cycle time estimate.
+      // Compute time from counter reading, but avoiding overflow
+      // delta_cycles may be larger than on the fast path.
+      uint64_t estimated_scaled_ns;
+      int s = -1;
+      do {
+        s++;
+        estimated_scaled_ns = (delta_cycles >> s) * sample->nsscaled_per_cycle;
+      } while (estimated_scaled_ns / sample->nsscaled_per_cycle !=
+               (delta_cycles >> s));
+      estimated_base_ns = sample->base_ns +
+                          (estimated_scaled_ns >> (kScale - s));
+    }
+
+    // Compute the assumed cycle time kMinNSBetweenSamples ns into the future
+    // assuming the cycle counter rate stays the same as the last interval.
+    uint64_t ns = now_ns - sample->raw_ns;
+    uint64_t measured_nsscaled_per_cycle = SafeDivideAndScale(ns, delta_cycles);
+
+    uint64_t assumed_next_sample_delta_cycles =
+        SafeDivideAndScale(kMinNSBetweenSamples, measured_nsscaled_per_cycle);
+
+    int64_t diff_ns = now_ns - estimated_base_ns;  // estimate low by this much
+
+    // We want to set nsscaled_per_cycle so that our estimate of the ns time
+    // at the assumed cycle time is the assumed ns time.
+    // That is, we want to set nsscaled_per_cycle so:
+    //  kMinNSBetweenSamples + diff_ns  ==
+    //  (assumed_next_sample_delta_cycles * nsscaled_per_cycle) >> kScale
+    // But we wish to damp oscillations, so instead correct only most
+    // of our current error, by solving:
+    //  kMinNSBetweenSamples + diff_ns - (diff_ns / 16) ==
+    //  (assumed_next_sample_delta_cycles * nsscaled_per_cycle) >> kScale
+    ns = kMinNSBetweenSamples + diff_ns - (diff_ns / 16);
+    uint64_t new_nsscaled_per_cycle =
+        SafeDivideAndScale(ns, assumed_next_sample_delta_cycles);
+    if (new_nsscaled_per_cycle != 0 &&
+        diff_ns < 100 * 1000 * 1000 && -diff_ns < 100 * 1000 * 1000) {
+      // record the cycle time measurement
+      last_sample.nsscaled_per_cycle.store(
+          new_nsscaled_per_cycle, std::memory_order_relaxed);
+      uint64_t new_min_cycles_per_sample =
+          SafeDivideAndScale(kMinNSBetweenSamples, new_nsscaled_per_cycle);
+      last_sample.min_cycles_per_sample.store(
+          new_min_cycles_per_sample, std::memory_order_relaxed);
+      stats_calibrations++;
+    } else {  // something went wrong; forget the slope
+      last_sample.nsscaled_per_cycle.store(0, std::memory_order_relaxed);
+      last_sample.min_cycles_per_sample.store(0, std::memory_order_relaxed);
+      estimated_base_ns = now_ns;
+      stats_reinitializations++;
+    }
+    last_sample.raw_ns.store(now_ns, std::memory_order_relaxed);
+    last_sample.base_ns.store(estimated_base_ns, std::memory_order_relaxed);
+    last_sample.base_cycles.store(now_cycles, std::memory_order_relaxed);
+  } else {
+    // have a sample, but no slope; waiting for enough time for a calibration
+    stats_slow_paths++;
+  }
+
+  SeqRelease(&seq, lock_value);  // release the readers
+
+  return estimated_base_ns;
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
+#endif  // ABSL_USE_CYCLECLOCK_FOR_GET_CURRENT_TIME_NANOS
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+// Returns the maximum duration that SleepOnce() can sleep for.
+constexpr absl::Duration MaxSleep() {
+#ifdef _WIN32
+  // Windows Sleep() takes unsigned long argument in milliseconds.
+  return absl::Milliseconds(
+      std::numeric_limits<unsigned long>::max());  // NOLINT(runtime/int)
+#else
+  return absl::Seconds(std::numeric_limits<time_t>::max());
+#endif
+}
+
+// Sleeps for the given duration.
+// REQUIRES: to_sleep <= MaxSleep().
+void SleepOnce(absl::Duration to_sleep) {
+#ifdef _WIN32
+  Sleep(to_sleep / absl::Milliseconds(1));
+#else
+  struct timespec sleep_time = absl::ToTimespec(to_sleep);
+  while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR) {
+    // Ignore signals and wait for the full interval to elapse.
+  }
+#endif
+}
+
+}  // namespace
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+extern "C" {
+
+ABSL_ATTRIBUTE_WEAK void AbslInternalSleepFor(absl::Duration duration) {
+  while (duration > absl::ZeroDuration()) {
+    absl::Duration to_sleep = std::min(duration, absl::MaxSleep());
+    absl::SleepOnce(to_sleep);
+    duration -= to_sleep;
+  }
+}
+
+}  // extern "C"
diff --git a/ChattingApp 000/Pods/abseil/absl/time/clock.h b/ChattingApp 000/Pods/abseil/absl/time/clock.h
new file mode 100644
index 0000000..27764a9
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/clock.h	
@@ -0,0 +1,74 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: clock.h
+// -----------------------------------------------------------------------------
+//
+// This header file contains utility functions for working with the system-wide
+// realtime clock. For descriptions of the main time abstractions used within
+// this header file, consult the time.h header file.
+#ifndef ABSL_TIME_CLOCK_H_
+#define ABSL_TIME_CLOCK_H_
+
+#include "absl/base/macros.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Now()
+//
+// Returns the current time, expressed as an `absl::Time` absolute time value.
+absl::Time Now();
+
+// GetCurrentTimeNanos()
+//
+// Returns the current time, expressed as a count of nanoseconds since the Unix
+// Epoch (https://en.wikipedia.org/wiki/Unix_time). Prefer `absl::Now()` instead
+// for all but the most performance-sensitive cases (i.e. when you are calling
+// this function hundreds of thousands of times per second).
+int64_t GetCurrentTimeNanos();
+
+// SleepFor()
+//
+// Sleeps for the specified duration, expressed as an `absl::Duration`.
+//
+// Notes:
+// * Signal interruptions will not reduce the sleep duration.
+// * Returns immediately when passed a nonpositive duration.
+void SleepFor(absl::Duration duration);
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+// -----------------------------------------------------------------------------
+// Implementation Details
+// -----------------------------------------------------------------------------
+
+// In some build configurations we pass --detect-odr-violations to the
+// gold linker.  This causes it to flag weak symbol overrides as ODR
+// violations.  Because ODR only applies to C++ and not C,
+// --detect-odr-violations ignores symbols not mangled with C++ names.
+// By changing our extension points to be extern "C", we dodge this
+// check.
+extern "C" {
+void AbslInternalSleepFor(absl::Duration duration);
+}  // extern "C"
+
+inline void absl::SleepFor(absl::Duration duration) {
+  AbslInternalSleepFor(duration);
+}
+
+#endif  // ABSL_TIME_CLOCK_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/duration.cc b/ChattingApp 000/Pods/abseil/absl/time/duration.cc
new file mode 100644
index 0000000..b1af840
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/duration.cc	
@@ -0,0 +1,922 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The implementation of the absl::Duration class, which is declared in
+// //absl/time.h.  This class behaves like a numeric type; it has no public
+// methods and is used only through the operators defined here.
+//
+// Implementation notes:
+//
+// An absl::Duration is represented as
+//
+//   rep_hi_ : (int64_t)  Whole seconds
+//   rep_lo_ : (uint32_t) Fractions of a second
+//
+// The seconds value (rep_hi_) may be positive or negative as appropriate.
+// The fractional seconds (rep_lo_) is always a positive offset from rep_hi_.
+// The API for Duration guarantees at least nanosecond resolution, which
+// means rep_lo_ could have a max value of 1B - 1 if it stored nanoseconds.
+// However, to utilize more of the available 32 bits of space in rep_lo_,
+// we instead store quarters of a nanosecond in rep_lo_ resulting in a max
+// value of 4B - 1.  This allows us to correctly handle calculations like
+// 0.5 nanos + 0.5 nanos = 1 nano.  The following example shows the actual
+// Duration rep using quarters of a nanosecond.
+//
+//    2.5 sec = {rep_hi_=2,  rep_lo_=2000000000}  // lo = 4 * 500000000
+//   -2.5 sec = {rep_hi_=-3, rep_lo_=2000000000}
+//
+// Infinite durations are represented as Durations with the rep_lo_ field set
+// to all 1s.
+//
+//   +InfiniteDuration:
+//     rep_hi_ : kint64max
+//     rep_lo_ : ~0U
+//
+//   -InfiniteDuration:
+//     rep_hi_ : kint64min
+//     rep_lo_ : ~0U
+//
+// Arithmetic overflows/underflows to +/- infinity and saturates.
+
+#if defined(_MSC_VER)
+#include <winsock2.h>  // for timeval
+#endif
+
+#include <algorithm>
+#include <cassert>
+#include <cctype>
+#include <cerrno>
+#include <cmath>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <functional>
+#include <limits>
+#include <string>
+
+#include "absl/base/casts.h"
+#include "absl/numeric/int128.h"
+#include "absl/time/time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+
+using time_internal::kTicksPerNanosecond;
+using time_internal::kTicksPerSecond;
+
+constexpr int64_t kint64max = std::numeric_limits<int64_t>::max();
+constexpr int64_t kint64min = std::numeric_limits<int64_t>::min();
+
+// Can't use std::isinfinite() because it doesn't exist on windows.
+inline bool IsFinite(double d) {
+  if (std::isnan(d)) return false;
+  return d != std::numeric_limits<double>::infinity() &&
+         d != -std::numeric_limits<double>::infinity();
+}
+
+inline bool IsValidDivisor(double d) {
+  if (std::isnan(d)) return false;
+  return d != 0.0;
+}
+
+// Can't use std::round() because it is only available in C++11.
+// Note that we ignore the possibility of floating-point over/underflow.
+template <typename Double>
+inline double Round(Double d) {
+  return d < 0 ? std::ceil(d - 0.5) : std::floor(d + 0.5);
+}
+
+// *sec may be positive or negative.  *ticks must be in the range
+// -kTicksPerSecond < *ticks < kTicksPerSecond.  If *ticks is negative it
+// will be normalized to a positive value by adjusting *sec accordingly.
+inline void NormalizeTicks(int64_t* sec, int64_t* ticks) {
+  if (*ticks < 0) {
+    --*sec;
+    *ticks += kTicksPerSecond;
+  }
+}
+
+// Makes a uint128 from the absolute value of the given scalar.
+inline uint128 MakeU128(int64_t a) {
+  uint128 u128 = 0;
+  if (a < 0) {
+    ++u128;
+    ++a;  // Makes it safe to negate 'a'
+    a = -a;
+  }
+  u128 += static_cast<uint64_t>(a);
+  return u128;
+}
+
+// Makes a uint128 count of ticks out of the absolute value of the Duration.
+inline uint128 MakeU128Ticks(Duration d) {
+  int64_t rep_hi = time_internal::GetRepHi(d);
+  uint32_t rep_lo = time_internal::GetRepLo(d);
+  if (rep_hi < 0) {
+    ++rep_hi;
+    rep_hi = -rep_hi;
+    rep_lo = kTicksPerSecond - rep_lo;
+  }
+  uint128 u128 = static_cast<uint64_t>(rep_hi);
+  u128 *= static_cast<uint64_t>(kTicksPerSecond);
+  u128 += rep_lo;
+  return u128;
+}
+
+// Breaks a uint128 of ticks into a Duration.
+inline Duration MakeDurationFromU128(uint128 u128, bool is_neg) {
+  int64_t rep_hi;
+  uint32_t rep_lo;
+  const uint64_t h64 = Uint128High64(u128);
+  const uint64_t l64 = Uint128Low64(u128);
+  if (h64 == 0) {  // fastpath
+    const uint64_t hi = l64 / kTicksPerSecond;
+    rep_hi = static_cast<int64_t>(hi);
+    rep_lo = static_cast<uint32_t>(l64 - hi * kTicksPerSecond);
+  } else {
+    // kMaxRepHi64 is the high 64 bits of (2^63 * kTicksPerSecond).
+    // Any positive tick count whose high 64 bits are >= kMaxRepHi64
+    // is not representable as a Duration.  A negative tick count can
+    // have its high 64 bits == kMaxRepHi64 but only when the low 64
+    // bits are all zero, otherwise it is not representable either.
+    const uint64_t kMaxRepHi64 = 0x77359400UL;
+    if (h64 >= kMaxRepHi64) {
+      if (is_neg && h64 == kMaxRepHi64 && l64 == 0) {
+        // Avoid trying to represent -kint64min below.
+        return time_internal::MakeDuration(kint64min);
+      }
+      return is_neg ? -InfiniteDuration() : InfiniteDuration();
+    }
+    const uint128 kTicksPerSecond128 = static_cast<uint64_t>(kTicksPerSecond);
+    const uint128 hi = u128 / kTicksPerSecond128;
+    rep_hi = static_cast<int64_t>(Uint128Low64(hi));
+    rep_lo =
+        static_cast<uint32_t>(Uint128Low64(u128 - hi * kTicksPerSecond128));
+  }
+  if (is_neg) {
+    rep_hi = -rep_hi;
+    if (rep_lo != 0) {
+      --rep_hi;
+      rep_lo = kTicksPerSecond - rep_lo;
+    }
+  }
+  return time_internal::MakeDuration(rep_hi, rep_lo);
+}
+
+// Convert between int64_t and uint64_t, preserving representation. This
+// allows us to do arithmetic in the unsigned domain, where overflow has
+// well-defined behavior. See operator+=() and operator-=().
+//
+// C99 7.20.1.1.1, as referenced by C++11 18.4.1.2, says, "The typedef
+// name intN_t designates a signed integer type with width N, no padding
+// bits, and a two's complement representation." So, we can convert to
+// and from the corresponding uint64_t value using a bit cast.
+inline uint64_t EncodeTwosComp(int64_t v) {
+  return absl::bit_cast<uint64_t>(v);
+}
+inline int64_t DecodeTwosComp(uint64_t v) { return absl::bit_cast<int64_t>(v); }
+
+// Note: The overflow detection in this function is done using greater/less *or
+// equal* because kint64max/min is too large to be represented exactly in a
+// double (which only has 53 bits of precision). In order to avoid assigning to
+// rep->hi a double value that is too large for an int64_t (and therefore is
+// undefined), we must consider computations that equal kint64max/min as a
+// double as overflow cases.
+inline bool SafeAddRepHi(double a_hi, double b_hi, Duration* d) {
+  double c = a_hi + b_hi;
+  if (c >= static_cast<double>(kint64max)) {
+    *d = InfiniteDuration();
+    return false;
+  }
+  if (c <= static_cast<double>(kint64min)) {
+    *d = -InfiniteDuration();
+    return false;
+  }
+  *d = time_internal::MakeDuration(c, time_internal::GetRepLo(*d));
+  return true;
+}
+
+// A functor that's similar to std::multiplies<T>, except this returns the max
+// T value instead of overflowing. This is only defined for uint128.
+template <typename Ignored>
+struct SafeMultiply {
+  uint128 operator()(uint128 a, uint128 b) const {
+    // b hi is always zero because it originated as an int64_t.
+    assert(Uint128High64(b) == 0);
+    // Fastpath to avoid the expensive overflow check with division.
+    if (Uint128High64(a) == 0) {
+      return (((Uint128Low64(a) | Uint128Low64(b)) >> 32) == 0)
+                 ? static_cast<uint128>(Uint128Low64(a) * Uint128Low64(b))
+                 : a * b;
+    }
+    return b == 0 ? b : (a > kuint128max / b) ? kuint128max : a * b;
+  }
+};
+
+// Scales (i.e., multiplies or divides, depending on the Operation template)
+// the Duration d by the int64_t r.
+template <template <typename> class Operation>
+inline Duration ScaleFixed(Duration d, int64_t r) {
+  const uint128 a = MakeU128Ticks(d);
+  const uint128 b = MakeU128(r);
+  const uint128 q = Operation<uint128>()(a, b);
+  const bool is_neg = (time_internal::GetRepHi(d) < 0) != (r < 0);
+  return MakeDurationFromU128(q, is_neg);
+}
+
+// Scales (i.e., multiplies or divides, depending on the Operation template)
+// the Duration d by the double r.
+template <template <typename> class Operation>
+inline Duration ScaleDouble(Duration d, double r) {
+  Operation<double> op;
+  double hi_doub = op(time_internal::GetRepHi(d), r);
+  double lo_doub = op(time_internal::GetRepLo(d), r);
+
+  double hi_int = 0;
+  double hi_frac = std::modf(hi_doub, &hi_int);
+
+  // Moves hi's fractional bits to lo.
+  lo_doub /= kTicksPerSecond;
+  lo_doub += hi_frac;
+
+  double lo_int = 0;
+  double lo_frac = std::modf(lo_doub, &lo_int);
+
+  // Rolls lo into hi if necessary.
+  int64_t lo64 = Round(lo_frac * kTicksPerSecond);
+
+  Duration ans;
+  if (!SafeAddRepHi(hi_int, lo_int, &ans)) return ans;
+  int64_t hi64 = time_internal::GetRepHi(ans);
+  if (!SafeAddRepHi(hi64, lo64 / kTicksPerSecond, &ans)) return ans;
+  hi64 = time_internal::GetRepHi(ans);
+  lo64 %= kTicksPerSecond;
+  NormalizeTicks(&hi64, &lo64);
+  return time_internal::MakeDuration(hi64, lo64);
+}
+
+// Tries to divide num by den as fast as possible by looking for common, easy
+// cases. If the division was done, the quotient is in *q and the remainder is
+// in *rem and true will be returned.
+inline bool IDivFastPath(const Duration num, const Duration den, int64_t* q,
+                         Duration* rem) {
+  // Bail if num or den is an infinity.
+  if (time_internal::IsInfiniteDuration(num) ||
+      time_internal::IsInfiniteDuration(den))
+    return false;
+
+  int64_t num_hi = time_internal::GetRepHi(num);
+  uint32_t num_lo = time_internal::GetRepLo(num);
+  int64_t den_hi = time_internal::GetRepHi(den);
+  uint32_t den_lo = time_internal::GetRepLo(den);
+
+  if (den_hi == 0 && den_lo == kTicksPerNanosecond) {
+    // Dividing by 1ns
+    if (num_hi >= 0 && num_hi < (kint64max - kTicksPerSecond) / 1000000000) {
+      *q = num_hi * 1000000000 + num_lo / kTicksPerNanosecond;
+      *rem = time_internal::MakeDuration(0, num_lo % den_lo);
+      return true;
+    }
+  } else if (den_hi == 0 && den_lo == 100 * kTicksPerNanosecond) {
+    // Dividing by 100ns (common when converting to Universal time)
+    if (num_hi >= 0 && num_hi < (kint64max - kTicksPerSecond) / 10000000) {
+      *q = num_hi * 10000000 + num_lo / (100 * kTicksPerNanosecond);
+      *rem = time_internal::MakeDuration(0, num_lo % den_lo);
+      return true;
+    }
+  } else if (den_hi == 0 && den_lo == 1000 * kTicksPerNanosecond) {
+    // Dividing by 1us
+    if (num_hi >= 0 && num_hi < (kint64max - kTicksPerSecond) / 1000000) {
+      *q = num_hi * 1000000 + num_lo / (1000 * kTicksPerNanosecond);
+      *rem = time_internal::MakeDuration(0, num_lo % den_lo);
+      return true;
+    }
+  } else if (den_hi == 0 && den_lo == 1000000 * kTicksPerNanosecond) {
+    // Dividing by 1ms
+    if (num_hi >= 0 && num_hi < (kint64max - kTicksPerSecond) / 1000) {
+      *q = num_hi * 1000 + num_lo / (1000000 * kTicksPerNanosecond);
+      *rem = time_internal::MakeDuration(0, num_lo % den_lo);
+      return true;
+    }
+  } else if (den_hi > 0 && den_lo == 0) {
+    // Dividing by positive multiple of 1s
+    if (num_hi >= 0) {
+      if (den_hi == 1) {
+        *q = num_hi;
+        *rem = time_internal::MakeDuration(0, num_lo);
+        return true;
+      }
+      *q = num_hi / den_hi;
+      *rem = time_internal::MakeDuration(num_hi % den_hi, num_lo);
+      return true;
+    }
+    if (num_lo != 0) {
+      num_hi += 1;
+    }
+    int64_t quotient = num_hi / den_hi;
+    int64_t rem_sec = num_hi % den_hi;
+    if (rem_sec > 0) {
+      rem_sec -= den_hi;
+      quotient += 1;
+    }
+    if (num_lo != 0) {
+      rem_sec -= 1;
+    }
+    *q = quotient;
+    *rem = time_internal::MakeDuration(rem_sec, num_lo);
+    return true;
+  }
+
+  return false;
+}
+
+}  // namespace
+
+namespace time_internal {
+
+// The 'satq' argument indicates whether the quotient should saturate at the
+// bounds of int64_t.  If it does saturate, the difference will spill over to
+// the remainder.  If it does not saturate, the remainder remain accurate,
+// but the returned quotient will over/underflow int64_t and should not be used.
+int64_t IDivDuration(bool satq, const Duration num, const Duration den,
+                   Duration* rem) {
+  int64_t q = 0;
+  if (IDivFastPath(num, den, &q, rem)) {
+    return q;
+  }
+
+  const bool num_neg = num < ZeroDuration();
+  const bool den_neg = den < ZeroDuration();
+  const bool quotient_neg = num_neg != den_neg;
+
+  if (time_internal::IsInfiniteDuration(num) || den == ZeroDuration()) {
+    *rem = num_neg ? -InfiniteDuration() : InfiniteDuration();
+    return quotient_neg ? kint64min : kint64max;
+  }
+  if (time_internal::IsInfiniteDuration(den)) {
+    *rem = num;
+    return 0;
+  }
+
+  const uint128 a = MakeU128Ticks(num);
+  const uint128 b = MakeU128Ticks(den);
+  uint128 quotient128 = a / b;
+
+  if (satq) {
+    // Limits the quotient to the range of int64_t.
+    if (quotient128 > uint128(static_cast<uint64_t>(kint64max))) {
+      quotient128 = quotient_neg ? uint128(static_cast<uint64_t>(kint64min))
+                                 : uint128(static_cast<uint64_t>(kint64max));
+    }
+  }
+
+  const uint128 remainder128 = a - quotient128 * b;
+  *rem = MakeDurationFromU128(remainder128, num_neg);
+
+  if (!quotient_neg || quotient128 == 0) {
+    return Uint128Low64(quotient128) & kint64max;
+  }
+  // The quotient needs to be negated, but we need to carefully handle
+  // quotient128s with the top bit on.
+  return -static_cast<int64_t>(Uint128Low64(quotient128 - 1) & kint64max) - 1;
+}
+
+}  // namespace time_internal
+
+//
+// Additive operators.
+//
+
+Duration& Duration::operator+=(Duration rhs) {
+  if (time_internal::IsInfiniteDuration(*this)) return *this;
+  if (time_internal::IsInfiniteDuration(rhs)) return *this = rhs;
+  const int64_t orig_rep_hi = rep_hi_;
+  rep_hi_ =
+      DecodeTwosComp(EncodeTwosComp(rep_hi_) + EncodeTwosComp(rhs.rep_hi_));
+  if (rep_lo_ >= kTicksPerSecond - rhs.rep_lo_) {
+    rep_hi_ = DecodeTwosComp(EncodeTwosComp(rep_hi_) + 1);
+    rep_lo_ -= kTicksPerSecond;
+  }
+  rep_lo_ += rhs.rep_lo_;
+  if (rhs.rep_hi_ < 0 ? rep_hi_ > orig_rep_hi : rep_hi_ < orig_rep_hi) {
+    return *this = rhs.rep_hi_ < 0 ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this;
+}
+
+Duration& Duration::operator-=(Duration rhs) {
+  if (time_internal::IsInfiniteDuration(*this)) return *this;
+  if (time_internal::IsInfiniteDuration(rhs)) {
+    return *this = rhs.rep_hi_ >= 0 ? -InfiniteDuration() : InfiniteDuration();
+  }
+  const int64_t orig_rep_hi = rep_hi_;
+  rep_hi_ =
+      DecodeTwosComp(EncodeTwosComp(rep_hi_) - EncodeTwosComp(rhs.rep_hi_));
+  if (rep_lo_ < rhs.rep_lo_) {
+    rep_hi_ = DecodeTwosComp(EncodeTwosComp(rep_hi_) - 1);
+    rep_lo_ += kTicksPerSecond;
+  }
+  rep_lo_ -= rhs.rep_lo_;
+  if (rhs.rep_hi_ < 0 ? rep_hi_ < orig_rep_hi : rep_hi_ > orig_rep_hi) {
+    return *this = rhs.rep_hi_ >= 0 ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this;
+}
+
+//
+// Multiplicative operators.
+//
+
+Duration& Duration::operator*=(int64_t r) {
+  if (time_internal::IsInfiniteDuration(*this)) {
+    const bool is_neg = (r < 0) != (rep_hi_ < 0);
+    return *this = is_neg ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this = ScaleFixed<SafeMultiply>(*this, r);
+}
+
+Duration& Duration::operator*=(double r) {
+  if (time_internal::IsInfiniteDuration(*this) || !IsFinite(r)) {
+    const bool is_neg = (std::signbit(r) != 0) != (rep_hi_ < 0);
+    return *this = is_neg ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this = ScaleDouble<std::multiplies>(*this, r);
+}
+
+Duration& Duration::operator/=(int64_t r) {
+  if (time_internal::IsInfiniteDuration(*this) || r == 0) {
+    const bool is_neg = (r < 0) != (rep_hi_ < 0);
+    return *this = is_neg ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this = ScaleFixed<std::divides>(*this, r);
+}
+
+Duration& Duration::operator/=(double r) {
+  if (time_internal::IsInfiniteDuration(*this) || !IsValidDivisor(r)) {
+    const bool is_neg = (std::signbit(r) != 0) != (rep_hi_ < 0);
+    return *this = is_neg ? -InfiniteDuration() : InfiniteDuration();
+  }
+  return *this = ScaleDouble<std::divides>(*this, r);
+}
+
+Duration& Duration::operator%=(Duration rhs) {
+  time_internal::IDivDuration(false, *this, rhs, this);
+  return *this;
+}
+
+double FDivDuration(Duration num, Duration den) {
+  // Arithmetic with infinity is sticky.
+  if (time_internal::IsInfiniteDuration(num) || den == ZeroDuration()) {
+    return (num < ZeroDuration()) == (den < ZeroDuration())
+               ? std::numeric_limits<double>::infinity()
+               : -std::numeric_limits<double>::infinity();
+  }
+  if (time_internal::IsInfiniteDuration(den)) return 0.0;
+
+  double a =
+      static_cast<double>(time_internal::GetRepHi(num)) * kTicksPerSecond +
+      time_internal::GetRepLo(num);
+  double b =
+      static_cast<double>(time_internal::GetRepHi(den)) * kTicksPerSecond +
+      time_internal::GetRepLo(den);
+  return a / b;
+}
+
+//
+// Trunc/Floor/Ceil.
+//
+
+Duration Trunc(Duration d, Duration unit) {
+  return d - (d % unit);
+}
+
+Duration Floor(const Duration d, const Duration unit) {
+  const absl::Duration td = Trunc(d, unit);
+  return td <= d ? td : td - AbsDuration(unit);
+}
+
+Duration Ceil(const Duration d, const Duration unit) {
+  const absl::Duration td = Trunc(d, unit);
+  return td >= d ? td : td + AbsDuration(unit);
+}
+
+//
+// Factory functions.
+//
+
+Duration DurationFromTimespec(timespec ts) {
+  if (static_cast<uint64_t>(ts.tv_nsec) < 1000 * 1000 * 1000) {
+    int64_t ticks = ts.tv_nsec * kTicksPerNanosecond;
+    return time_internal::MakeDuration(ts.tv_sec, ticks);
+  }
+  return Seconds(ts.tv_sec) + Nanoseconds(ts.tv_nsec);
+}
+
+Duration DurationFromTimeval(timeval tv) {
+  if (static_cast<uint64_t>(tv.tv_usec) < 1000 * 1000) {
+    int64_t ticks = tv.tv_usec * 1000 * kTicksPerNanosecond;
+    return time_internal::MakeDuration(tv.tv_sec, ticks);
+  }
+  return Seconds(tv.tv_sec) + Microseconds(tv.tv_usec);
+}
+
+//
+// Conversion to other duration types.
+//
+
+int64_t ToInt64Nanoseconds(Duration d) {
+  if (time_internal::GetRepHi(d) >= 0 &&
+      time_internal::GetRepHi(d) >> 33 == 0) {
+    return (time_internal::GetRepHi(d) * 1000 * 1000 * 1000) +
+           (time_internal::GetRepLo(d) / kTicksPerNanosecond);
+  }
+  return d / Nanoseconds(1);
+}
+int64_t ToInt64Microseconds(Duration d) {
+  if (time_internal::GetRepHi(d) >= 0 &&
+      time_internal::GetRepHi(d) >> 43 == 0) {
+    return (time_internal::GetRepHi(d) * 1000 * 1000) +
+           (time_internal::GetRepLo(d) / (kTicksPerNanosecond * 1000));
+  }
+  return d / Microseconds(1);
+}
+int64_t ToInt64Milliseconds(Duration d) {
+  if (time_internal::GetRepHi(d) >= 0 &&
+      time_internal::GetRepHi(d) >> 53 == 0) {
+    return (time_internal::GetRepHi(d) * 1000) +
+           (time_internal::GetRepLo(d) / (kTicksPerNanosecond * 1000 * 1000));
+  }
+  return d / Milliseconds(1);
+}
+int64_t ToInt64Seconds(Duration d) {
+  int64_t hi = time_internal::GetRepHi(d);
+  if (time_internal::IsInfiniteDuration(d)) return hi;
+  if (hi < 0 && time_internal::GetRepLo(d) != 0) ++hi;
+  return hi;
+}
+int64_t ToInt64Minutes(Duration d) {
+  int64_t hi = time_internal::GetRepHi(d);
+  if (time_internal::IsInfiniteDuration(d)) return hi;
+  if (hi < 0 && time_internal::GetRepLo(d) != 0) ++hi;
+  return hi / 60;
+}
+int64_t ToInt64Hours(Duration d) {
+  int64_t hi = time_internal::GetRepHi(d);
+  if (time_internal::IsInfiniteDuration(d)) return hi;
+  if (hi < 0 && time_internal::GetRepLo(d) != 0) ++hi;
+  return hi / (60 * 60);
+}
+
+double ToDoubleNanoseconds(Duration d) {
+  return FDivDuration(d, Nanoseconds(1));
+}
+double ToDoubleMicroseconds(Duration d) {
+  return FDivDuration(d, Microseconds(1));
+}
+double ToDoubleMilliseconds(Duration d) {
+  return FDivDuration(d, Milliseconds(1));
+}
+double ToDoubleSeconds(Duration d) {
+  return FDivDuration(d, Seconds(1));
+}
+double ToDoubleMinutes(Duration d) {
+  return FDivDuration(d, Minutes(1));
+}
+double ToDoubleHours(Duration d) {
+  return FDivDuration(d, Hours(1));
+}
+
+timespec ToTimespec(Duration d) {
+  timespec ts;
+  if (!time_internal::IsInfiniteDuration(d)) {
+    int64_t rep_hi = time_internal::GetRepHi(d);
+    uint32_t rep_lo = time_internal::GetRepLo(d);
+    if (rep_hi < 0) {
+      // Tweak the fields so that unsigned division of rep_lo
+      // maps to truncation (towards zero) for the timespec.
+      rep_lo += kTicksPerNanosecond - 1;
+      if (rep_lo >= kTicksPerSecond) {
+        rep_hi += 1;
+        rep_lo -= kTicksPerSecond;
+      }
+    }
+    ts.tv_sec = rep_hi;
+    if (ts.tv_sec == rep_hi) {  // no time_t narrowing
+      ts.tv_nsec = rep_lo / kTicksPerNanosecond;
+      return ts;
+    }
+  }
+  if (d >= ZeroDuration()) {
+    ts.tv_sec = std::numeric_limits<time_t>::max();
+    ts.tv_nsec = 1000 * 1000 * 1000 - 1;
+  } else {
+    ts.tv_sec = std::numeric_limits<time_t>::min();
+    ts.tv_nsec = 0;
+  }
+  return ts;
+}
+
+timeval ToTimeval(Duration d) {
+  timeval tv;
+  timespec ts = ToTimespec(d);
+  if (ts.tv_sec < 0) {
+    // Tweak the fields so that positive division of tv_nsec
+    // maps to truncation (towards zero) for the timeval.
+    ts.tv_nsec += 1000 - 1;
+    if (ts.tv_nsec >= 1000 * 1000 * 1000) {
+      ts.tv_sec += 1;
+      ts.tv_nsec -= 1000 * 1000 * 1000;
+    }
+  }
+  tv.tv_sec = ts.tv_sec;
+  if (tv.tv_sec != ts.tv_sec) {  // narrowing
+    if (ts.tv_sec < 0) {
+      tv.tv_sec = std::numeric_limits<decltype(tv.tv_sec)>::min();
+      tv.tv_usec = 0;
+    } else {
+      tv.tv_sec = std::numeric_limits<decltype(tv.tv_sec)>::max();
+      tv.tv_usec = 1000 * 1000 - 1;
+    }
+    return tv;
+  }
+  tv.tv_usec = static_cast<int>(ts.tv_nsec / 1000);  // suseconds_t
+  return tv;
+}
+
+std::chrono::nanoseconds ToChronoNanoseconds(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::nanoseconds>(d);
+}
+std::chrono::microseconds ToChronoMicroseconds(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::microseconds>(d);
+}
+std::chrono::milliseconds ToChronoMilliseconds(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::milliseconds>(d);
+}
+std::chrono::seconds ToChronoSeconds(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::seconds>(d);
+}
+std::chrono::minutes ToChronoMinutes(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::minutes>(d);
+}
+std::chrono::hours ToChronoHours(Duration d) {
+  return time_internal::ToChronoDuration<std::chrono::hours>(d);
+}
+
+//
+// To/From string formatting.
+//
+
+namespace {
+
+// Formats a positive 64-bit integer in the given field width.  Note that
+// it is up to the caller of Format64() to ensure that there is sufficient
+// space before ep to hold the conversion.
+char* Format64(char* ep, int width, int64_t v) {
+  do {
+    --width;
+    *--ep = '0' + (v % 10);  // contiguous digits
+  } while (v /= 10);
+  while (--width >= 0) *--ep = '0';  // zero pad
+  return ep;
+}
+
+// Helpers for FormatDuration() that format 'n' and append it to 'out'
+// followed by the given 'unit'.  If 'n' formats to "0", nothing is
+// appended (not even the unit).
+
+// A type that encapsulates how to display a value of a particular unit. For
+// values that are displayed with fractional parts, the precision indicates
+// where to round the value. The precision varies with the display unit because
+// a Duration can hold only quarters of a nanosecond, so displaying information
+// beyond that is just noise.
+//
+// For example, a microsecond value of 42.00025xxxxx should not display beyond 5
+// fractional digits, because it is in the noise of what a Duration can
+// represent.
+struct DisplayUnit {
+  const char* abbr;
+  int prec;
+  double pow10;
+};
+const DisplayUnit kDisplayNano = {"ns", 2, 1e2};
+const DisplayUnit kDisplayMicro = {"us", 5, 1e5};
+const DisplayUnit kDisplayMilli = {"ms", 8, 1e8};
+const DisplayUnit kDisplaySec = {"s", 11, 1e11};
+const DisplayUnit kDisplayMin = {"m", -1, 0.0};   // prec ignored
+const DisplayUnit kDisplayHour = {"h", -1, 0.0};  // prec ignored
+
+void AppendNumberUnit(std::string* out, int64_t n, DisplayUnit unit) {
+  char buf[sizeof("2562047788015216")];  // hours in max duration
+  char* const ep = buf + sizeof(buf);
+  char* bp = Format64(ep, 0, n);
+  if (*bp != '0' || bp + 1 != ep) {
+    out->append(bp, ep - bp);
+    out->append(unit.abbr);
+  }
+}
+
+// Note: unit.prec is limited to double's digits10 value (typically 15) so it
+// always fits in buf[].
+void AppendNumberUnit(std::string* out, double n, DisplayUnit unit) {
+  const int buf_size = std::numeric_limits<double>::digits10;
+  const int prec = std::min(buf_size, unit.prec);
+  char buf[buf_size];  // also large enough to hold integer part
+  char* ep = buf + sizeof(buf);
+  double d = 0;
+  int64_t frac_part = Round(std::modf(n, &d) * unit.pow10);
+  int64_t int_part = d;
+  if (int_part != 0 || frac_part != 0) {
+    char* bp = Format64(ep, 0, int_part);  // always < 1000
+    out->append(bp, ep - bp);
+    if (frac_part != 0) {
+      out->push_back('.');
+      bp = Format64(ep, prec, frac_part);
+      while (ep[-1] == '0') --ep;
+      out->append(bp, ep - bp);
+    }
+    out->append(unit.abbr);
+  }
+}
+
+}  // namespace
+
+// From Go's doc at https://golang.org/pkg/time/#Duration.String
+//   [FormatDuration] returns a string representing the duration in the
+//   form "72h3m0.5s". Leading zero units are omitted.  As a special
+//   case, durations less than one second format use a smaller unit
+//   (milli-, micro-, or nanoseconds) to ensure that the leading digit
+//   is non-zero.  The zero duration formats as 0, with no unit.
+std::string FormatDuration(Duration d) {
+  const Duration min_duration = Seconds(kint64min);
+  if (d == min_duration) {
+    // Avoid needing to negate kint64min by directly returning what the
+    // following code should produce in that case.
+    return "-2562047788015215h30m8s";
+  }
+  std::string s;
+  if (d < ZeroDuration()) {
+    s.append("-");
+    d = -d;
+  }
+  if (d == InfiniteDuration()) {
+    s.append("inf");
+  } else if (d < Seconds(1)) {
+    // Special case for durations with a magnitude < 1 second.  The duration
+    // is printed as a fraction of a single unit, e.g., "1.2ms".
+    if (d < Microseconds(1)) {
+      AppendNumberUnit(&s, FDivDuration(d, Nanoseconds(1)), kDisplayNano);
+    } else if (d < Milliseconds(1)) {
+      AppendNumberUnit(&s, FDivDuration(d, Microseconds(1)), kDisplayMicro);
+    } else {
+      AppendNumberUnit(&s, FDivDuration(d, Milliseconds(1)), kDisplayMilli);
+    }
+  } else {
+    AppendNumberUnit(&s, IDivDuration(d, Hours(1), &d), kDisplayHour);
+    AppendNumberUnit(&s, IDivDuration(d, Minutes(1), &d), kDisplayMin);
+    AppendNumberUnit(&s, FDivDuration(d, Seconds(1)), kDisplaySec);
+  }
+  if (s.empty() || s == "-") {
+    s = "0";
+  }
+  return s;
+}
+
+namespace {
+
+// A helper for ParseDuration() that parses a leading number from the given
+// string and stores the result in *int_part/*frac_part/*frac_scale.  The
+// given string pointer is modified to point to the first unconsumed char.
+bool ConsumeDurationNumber(const char** dpp, int64_t* int_part,
+                           int64_t* frac_part, int64_t* frac_scale) {
+  *int_part = 0;
+  *frac_part = 0;
+  *frac_scale = 1;  // invariant: *frac_part < *frac_scale
+  const char* start = *dpp;
+  for (; std::isdigit(**dpp); *dpp += 1) {
+    const int d = **dpp - '0';  // contiguous digits
+    if (*int_part > kint64max / 10) return false;
+    *int_part *= 10;
+    if (*int_part > kint64max - d) return false;
+    *int_part += d;
+  }
+  const bool int_part_empty = (*dpp == start);
+  if (**dpp != '.') return !int_part_empty;
+  for (*dpp += 1; std::isdigit(**dpp); *dpp += 1) {
+    const int d = **dpp - '0';  // contiguous digits
+    if (*frac_scale <= kint64max / 10) {
+      *frac_part *= 10;
+      *frac_part += d;
+      *frac_scale *= 10;
+    }
+  }
+  return !int_part_empty || *frac_scale != 1;
+}
+
+// A helper for ParseDuration() that parses a leading unit designator (e.g.,
+// ns, us, ms, s, m, h) from the given string and stores the resulting unit
+// in "*unit".  The given string pointer is modified to point to the first
+// unconsumed char.
+bool ConsumeDurationUnit(const char** start, Duration* unit) {
+  const char *s = *start;
+  bool ok = true;
+  if (strncmp(s, "ns", 2) == 0) {
+    s += 2;
+    *unit = Nanoseconds(1);
+  } else if (strncmp(s, "us", 2) == 0) {
+    s += 2;
+    *unit = Microseconds(1);
+  } else if (strncmp(s, "ms", 2) == 0) {
+    s += 2;
+    *unit = Milliseconds(1);
+  } else if (strncmp(s, "s", 1) == 0) {
+    s += 1;
+    *unit = Seconds(1);
+  } else if (strncmp(s, "m", 1) == 0) {
+    s += 1;
+    *unit = Minutes(1);
+  } else if (strncmp(s, "h", 1) == 0) {
+    s += 1;
+    *unit = Hours(1);
+  } else {
+    ok = false;
+  }
+  *start = s;
+  return ok;
+}
+
+}  // namespace
+
+// From Go's doc at https://golang.org/pkg/time/#ParseDuration
+//   [ParseDuration] parses a duration string. A duration string is
+//   a possibly signed sequence of decimal numbers, each with optional
+//   fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m".
+//   Valid time units are "ns", "us" "ms", "s", "m", "h".
+bool ParseDuration(const std::string& dur_string, Duration* d) {
+  const char* start = dur_string.c_str();
+  int sign = 1;
+
+  if (*start == '-' || *start == '+') {
+    sign = *start == '-' ? -1 : 1;
+    ++start;
+  }
+
+  // Can't parse a duration from an empty std::string.
+  if (*start == '\0') {
+    return false;
+  }
+
+  // Special case for a std::string of "0".
+  if (*start == '0' && *(start + 1) == '\0') {
+    *d = ZeroDuration();
+    return true;
+  }
+
+  if (strcmp(start, "inf") == 0) {
+    *d = sign * InfiniteDuration();
+    return true;
+  }
+
+  Duration dur;
+  while (*start != '\0') {
+    int64_t int_part;
+    int64_t frac_part;
+    int64_t frac_scale;
+    Duration unit;
+    if (!ConsumeDurationNumber(&start, &int_part, &frac_part, &frac_scale) ||
+        !ConsumeDurationUnit(&start, &unit)) {
+      return false;
+    }
+    if (int_part != 0) dur += sign * int_part * unit;
+    if (frac_part != 0) dur += sign * frac_part * unit / frac_scale;
+  }
+  *d = dur;
+  return true;
+}
+
+bool AbslParseFlag(absl::string_view text, Duration* dst, std::string*) {
+  return ParseDuration(std::string(text), dst);
+}
+
+std::string AbslUnparseFlag(Duration d) { return FormatDuration(d); }
+bool ParseFlag(const std::string& text, Duration* dst, std::string* ) {
+  return ParseDuration(text, dst);
+}
+
+std::string UnparseFlag(Duration d) { return FormatDuration(d); }
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/format.cc b/ChattingApp 000/Pods/abseil/absl/time/format.cc
new file mode 100644
index 0000000..ee088f3
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/format.cc	
@@ -0,0 +1,153 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <string.h>
+#include <cctype>
+#include <cstdint>
+
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+#include "absl/time/time.h"
+
+namespace cctz = absl::time_internal::cctz;
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+ABSL_DLL extern const char RFC3339_full[] =
+    "%Y-%m-%dT%H:%M:%E*S%Ez";
+ABSL_DLL extern const char RFC3339_sec[] = "%Y-%m-%dT%H:%M:%S%Ez";
+
+ABSL_DLL extern const char RFC1123_full[] =
+    "%a, %d %b %E4Y %H:%M:%S %z";
+ABSL_DLL extern const char RFC1123_no_wday[] =
+    "%d %b %E4Y %H:%M:%S %z";
+
+namespace {
+
+const char kInfiniteFutureStr[] = "infinite-future";
+const char kInfinitePastStr[] = "infinite-past";
+
+struct cctz_parts {
+  cctz::time_point<cctz::seconds> sec;
+  cctz::detail::femtoseconds fem;
+};
+
+inline cctz::time_point<cctz::seconds> unix_epoch() {
+  return std::chrono::time_point_cast<cctz::seconds>(
+      std::chrono::system_clock::from_time_t(0));
+}
+
+// Splits a Time into seconds and femtoseconds, which can be used with CCTZ.
+// Requires that 't' is finite. See duration.cc for details about rep_hi and
+// rep_lo.
+cctz_parts Split(absl::Time t) {
+  const auto d = time_internal::ToUnixDuration(t);
+  const int64_t rep_hi = time_internal::GetRepHi(d);
+  const int64_t rep_lo = time_internal::GetRepLo(d);
+  const auto sec = unix_epoch() + cctz::seconds(rep_hi);
+  const auto fem = cctz::detail::femtoseconds(rep_lo * (1000 * 1000 / 4));
+  return {sec, fem};
+}
+
+// Joins the given seconds and femtoseconds into a Time. See duration.cc for
+// details about rep_hi and rep_lo.
+absl::Time Join(const cctz_parts& parts) {
+  const int64_t rep_hi = (parts.sec - unix_epoch()).count();
+  const uint32_t rep_lo = parts.fem.count() / (1000 * 1000 / 4);
+  const auto d = time_internal::MakeDuration(rep_hi, rep_lo);
+  return time_internal::FromUnixDuration(d);
+}
+
+}  // namespace
+
+std::string FormatTime(const std::string& format, absl::Time t,
+                       absl::TimeZone tz) {
+  if (t == absl::InfiniteFuture()) return kInfiniteFutureStr;
+  if (t == absl::InfinitePast()) return kInfinitePastStr;
+  const auto parts = Split(t);
+  return cctz::detail::format(format, parts.sec, parts.fem,
+                              cctz::time_zone(tz));
+}
+
+std::string FormatTime(absl::Time t, absl::TimeZone tz) {
+  return FormatTime(RFC3339_full, t, tz);
+}
+
+std::string FormatTime(absl::Time t) {
+  return absl::FormatTime(RFC3339_full, t, absl::LocalTimeZone());
+}
+
+bool ParseTime(const std::string& format, const std::string& input,
+               absl::Time* time, std::string* err) {
+  return absl::ParseTime(format, input, absl::UTCTimeZone(), time, err);
+}
+
+// If the input string does not contain an explicit UTC offset, interpret
+// the fields with respect to the given TimeZone.
+bool ParseTime(const std::string& format, const std::string& input,
+               absl::TimeZone tz, absl::Time* time, std::string* err) {
+  const char* data = input.c_str();
+  while (std::isspace(*data)) ++data;
+
+  size_t inf_size = strlen(kInfiniteFutureStr);
+  if (strncmp(data, kInfiniteFutureStr, inf_size) == 0) {
+    const char* new_data = data + inf_size;
+    while (std::isspace(*new_data)) ++new_data;
+    if (*new_data == '\0') {
+      *time = InfiniteFuture();
+      return true;
+    }
+  }
+
+  inf_size = strlen(kInfinitePastStr);
+  if (strncmp(data, kInfinitePastStr, inf_size) == 0) {
+    const char* new_data = data + inf_size;
+    while (std::isspace(*new_data)) ++new_data;
+    if (*new_data == '\0') {
+      *time = InfinitePast();
+      return true;
+    }
+  }
+
+  std::string error;
+  cctz_parts parts;
+  const bool b = cctz::detail::parse(format, input, cctz::time_zone(tz),
+                                     &parts.sec, &parts.fem, &error);
+  if (b) {
+    *time = Join(parts);
+  } else if (err != nullptr) {
+    *err = error;
+  }
+  return b;
+}
+
+// Functions required to support absl::Time flags.
+bool AbslParseFlag(absl::string_view text, absl::Time* t, std::string* error) {
+  return absl::ParseTime(RFC3339_full, std::string(text), absl::UTCTimeZone(),
+                         t, error);
+}
+
+std::string AbslUnparseFlag(absl::Time t) {
+  return absl::FormatTime(RFC3339_full, t, absl::UTCTimeZone());
+}
+bool ParseFlag(const std::string& text, absl::Time* t, std::string* error) {
+  return absl::ParseTime(RFC3339_full, text, absl::UTCTimeZone(), t, error);
+}
+
+std::string UnparseFlag(absl::Time t) {
+  return absl::FormatTime(RFC3339_full, t, absl::UTCTimeZone());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time.h
new file mode 100644
index 0000000..d47ff86
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time.h	
@@ -0,0 +1,332 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
+#define ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time_detail.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// The term "civil time" refers to the legally recognized human-scale time
+// that is represented by the six fields YYYY-MM-DD hh:mm:ss. Modern-day civil
+// time follows the Gregorian Calendar and is a time-zone-independent concept.
+// A "date" is perhaps the most common example of a civil time (represented in
+// this library as cctz::civil_day). This library provides six classes and a
+// handful of functions that help with rounding, iterating, and arithmetic on
+// civil times while avoiding complications like daylight-saving time (DST).
+//
+// The following six classes form the core of this civil-time library:
+//
+//   * civil_second
+//   * civil_minute
+//   * civil_hour
+//   * civil_day
+//   * civil_month
+//   * civil_year
+//
+// Each class is a simple value type with the same interface for construction
+// and the same six accessors for each of the civil fields (year, month, day,
+// hour, minute, and second, aka YMDHMS). These classes differ only in their
+// alignment, which is indicated by the type name and specifies the field on
+// which arithmetic operates.
+//
+// Each class can be constructed by passing up to six optional integer
+// arguments representing the YMDHMS fields (in that order) to the
+// constructor. Omitted fields are assigned their minimum valid value. Hours,
+// minutes, and seconds will be set to 0, month and day will be set to 1, and
+// since there is no minimum valid year, it will be set to 1970. So, a
+// default-constructed civil-time object will have YMDHMS fields representing
+// "1970-01-01 00:00:00". Fields that are out-of-range are normalized (e.g.,
+// October 32 -> November 1) so that all civil-time objects represent valid
+// values.
+//
+// Each civil-time class is aligned to the civil-time field indicated in the
+// class's name after normalization. Alignment is performed by setting all the
+// inferior fields to their minimum valid value (as described above). The
+// following are examples of how each of the six types would align the fields
+// representing November 22, 2015 at 12:34:56 in the afternoon. (Note: the
+// string format used here is not important; it's just a shorthand way of
+// showing the six YMDHMS fields.)
+//
+//   civil_second  2015-11-22 12:34:56
+//   civil_minute  2015-11-22 12:34:00
+//   civil_hour    2015-11-22 12:00:00
+//   civil_day     2015-11-22 00:00:00
+//   civil_month   2015-11-01 00:00:00
+//   civil_year    2015-01-01 00:00:00
+//
+// Each civil-time type performs arithmetic on the field to which it is
+// aligned. This means that adding 1 to a civil_day increments the day field
+// (normalizing as necessary), and subtracting 7 from a civil_month operates
+// on the month field (normalizing as necessary). All arithmetic produces a
+// valid civil time. Difference requires two similarly aligned civil-time
+// objects and returns the scalar answer in units of the objects' alignment.
+// For example, the difference between two civil_hour objects will give an
+// answer in units of civil hours.
+//
+// In addition to the six civil-time types just described, there are
+// a handful of helper functions and algorithms for performing common
+// calculations. These are described below.
+//
+// Note: In C++14 and later, this library is usable in a constexpr context.
+//
+// CONSTRUCTION:
+//
+// Each of the civil-time types can be constructed in two ways: by directly
+// passing to the constructor up to six (optional) integers representing the
+// YMDHMS fields, or by copying the YMDHMS fields from a differently aligned
+// civil-time type.
+//
+//   civil_day default_value;  // 1970-01-01 00:00:00
+//
+//   civil_day a(2015, 2, 3);           // 2015-02-03 00:00:00
+//   civil_day b(2015, 2, 3, 4, 5, 6);  // 2015-02-03 00:00:00
+//   civil_day c(2015);                 // 2015-01-01 00:00:00
+//
+//   civil_second ss(2015, 2, 3, 4, 5, 6);  // 2015-02-03 04:05:06
+//   civil_minute mm(ss);                   // 2015-02-03 04:05:00
+//   civil_hour hh(mm);                     // 2015-02-03 04:00:00
+//   civil_day d(hh);                       // 2015-02-03 00:00:00
+//   civil_month m(d);                      // 2015-02-01 00:00:00
+//   civil_year y(m);                       // 2015-01-01 00:00:00
+//
+//   m = civil_month(y);     // 2015-01-01 00:00:00
+//   d = civil_day(m);       // 2015-01-01 00:00:00
+//   hh = civil_hour(d);     // 2015-01-01 00:00:00
+//   mm = civil_minute(hh);  // 2015-01-01 00:00:00
+//   ss = civil_second(mm);  // 2015-01-01 00:00:00
+//
+// ALIGNMENT CONVERSION:
+//
+// The alignment of a civil-time object cannot change, but the object may be
+// used to construct a new object with a different alignment. This is referred
+// to as "realigning". When realigning to a type with the same or more
+// precision (e.g., civil_day -> civil_second), the conversion may be
+// performed implicitly since no information is lost. However, if information
+// could be discarded (e.g., civil_second -> civil_day), the conversion must
+// be explicit at the call site.
+//
+//   void fun(const civil_day& day);
+//
+//   civil_second cs;
+//   fun(cs);  // Won't compile because data may be discarded
+//   fun(civil_day(cs));  // OK: explicit conversion
+//
+//   civil_day cd;
+//   fun(cd);  // OK: no conversion needed
+//
+//   civil_month cm;
+//   fun(cm);  // OK: implicit conversion to civil_day
+//
+// NORMALIZATION:
+//
+// Integer arguments passed to the constructor may be out-of-range, in which
+// case they are normalized to produce a valid civil-time object. This enables
+// natural arithmetic on constructor arguments without worrying about the
+// field's range. Normalization guarantees that there are no invalid
+// civil-time objects.
+//
+//   civil_day d(2016, 10, 32);  // Out-of-range day; normalized to 2016-11-01
+//
+// Note: If normalization is undesired, you can signal an error by comparing
+// the constructor arguments to the normalized values returned by the YMDHMS
+// properties.
+//
+// PROPERTIES:
+//
+// All civil-time types have accessors for all six of the civil-time fields:
+// year, month, day, hour, minute, and second. Recall that fields inferior to
+// the type's alignment will be set to their minimum valid value.
+//
+//   civil_day d(2015, 6, 28);
+//   // d.year() == 2015
+//   // d.month() == 6
+//   // d.day() == 28
+//   // d.hour() == 0
+//   // d.minute() == 0
+//   // d.second() == 0
+//
+// COMPARISON:
+//
+// Comparison always considers all six YMDHMS fields, regardless of the type's
+// alignment. Comparison between differently aligned civil-time types is
+// allowed.
+//
+//   civil_day feb_3(2015, 2, 3);  // 2015-02-03 00:00:00
+//   civil_day mar_4(2015, 3, 4);  // 2015-03-04 00:00:00
+//   // feb_3 < mar_4
+//   // civil_year(feb_3) == civil_year(mar_4)
+//
+//   civil_second feb_3_noon(2015, 2, 3, 12, 0, 0);  // 2015-02-03 12:00:00
+//   // feb_3 < feb_3_noon
+//   // feb_3 == civil_day(feb_3_noon)
+//
+//   // Iterates all the days of February 2015.
+//   for (civil_day d(2015, 2, 1); d < civil_month(2015, 3); ++d) {
+//     // ...
+//   }
+//
+// STREAMING:
+//
+// Each civil-time type may be sent to an output stream using operator<<().
+// The output format follows the pattern "YYYY-MM-DDThh:mm:ss" where fields
+// inferior to the type's alignment are omitted.
+//
+//   civil_second cs(2015, 2, 3, 4, 5, 6);
+//   std::cout << cs << "\n";  // Outputs: 2015-02-03T04:05:06
+//
+//   civil_day cd(cs);
+//   std::cout << cd << "\n";  // Outputs: 2015-02-03
+//
+//   civil_year cy(cs);
+//   std::cout << cy << "\n";  // Outputs: 2015
+//
+// ARITHMETIC:
+//
+// Civil-time types support natural arithmetic operators such as addition,
+// subtraction, and difference. Arithmetic operates on the civil-time field
+// indicated in the type's name. Difference requires arguments with the same
+// alignment and returns the answer in units of the alignment.
+//
+//   civil_day a(2015, 2, 3);
+//   ++a;                         // 2015-02-04 00:00:00
+//   --a;                         // 2015-02-03 00:00:00
+//   civil_day b = a + 1;         // 2015-02-04 00:00:00
+//   civil_day c = 1 + b;         // 2015-02-05 00:00:00
+//   int n = c - a;               // n = 2 (civil days)
+//   int m = c - civil_month(c);  // Won't compile: different types.
+//
+// EXAMPLE: Adding a month to January 31.
+//
+// One of the classic questions that arises when considering a civil-time
+// library (or a date library or a date/time library) is this: "What happens
+// when you add a month to January 31?" This is an interesting question
+// because there could be a number of possible answers:
+//
+//   1. March 3 (or 2 if a leap year). This may make sense if the operation
+//      wants the equivalent of February 31.
+//   2. February 28 (or 29 if a leap year). This may make sense if the operation
+//      wants the last day of January to go to the last day of February.
+//   3. Error. The caller may get some error, an exception, an invalid date
+//      object, or maybe false is returned. This may make sense because there is
+//      no single unambiguously correct answer to the question.
+//
+// Practically speaking, any answer that is not what the programmer intended
+// is the wrong answer.
+//
+// This civil-time library avoids the problem by making it impossible to ask
+// ambiguous questions. All civil-time objects are aligned to a particular
+// civil-field boundary (such as aligned to a year, month, day, hour, minute,
+// or second), and arithmetic operates on the field to which the object is
+// aligned. This means that in order to "add a month" the object must first be
+// aligned to a month boundary, which is equivalent to the first day of that
+// month.
+//
+// Of course, there are ways to compute an answer the question at hand using
+// this civil-time library, but they require the programmer to be explicit
+// about the answer they expect. To illustrate, let's see how to compute all
+// three of the above possible answers to the question of "Jan 31 plus 1
+// month":
+//
+//   const civil_day d(2015, 1, 31);
+//
+//   // Answer 1:
+//   // Add 1 to the month field in the constructor, and rely on normalization.
+//   const auto ans_normalized = civil_day(d.year(), d.month() + 1, d.day());
+//   // ans_normalized == 2015-03-03 (aka Feb 31)
+//
+//   // Answer 2:
+//   // Add 1 to month field, capping to the end of next month.
+//   const auto next_month = civil_month(d) + 1;
+//   const auto last_day_of_next_month = civil_day(next_month + 1) - 1;
+//   const auto ans_capped = std::min(ans_normalized, last_day_of_next_month);
+//   // ans_capped == 2015-02-28
+//
+//   // Answer 3:
+//   // Signal an error if the normalized answer is not in next month.
+//   if (civil_month(ans_normalized) != next_month) {
+//     // error, month overflow
+//   }
+//
+using civil_year = detail::civil_year;
+using civil_month = detail::civil_month;
+using civil_day = detail::civil_day;
+using civil_hour = detail::civil_hour;
+using civil_minute = detail::civil_minute;
+using civil_second = detail::civil_second;
+
+// An enum class with members monday, tuesday, wednesday, thursday, friday,
+// saturday, and sunday. These enum values may be sent to an output stream
+// using operator<<(). The result is the full weekday name in English with a
+// leading capital letter.
+//
+//   weekday wd = weekday::thursday;
+//   std::cout << wd << "\n";  // Outputs: Thursday
+//
+using detail::weekday;
+
+// Returns the weekday for the given civil-time value.
+//
+//   civil_day a(2015, 8, 13);
+//   weekday wd = get_weekday(a);  // wd == weekday::thursday
+//
+using detail::get_weekday;
+
+// Returns the civil_day that strictly follows or precedes the given
+// civil_day, and that falls on the given weekday.
+//
+// For example, given:
+//
+//     August 2015
+// Su Mo Tu We Th Fr Sa
+//                    1
+//  2  3  4  5  6  7  8
+//  9 10 11 12 13 14 15
+// 16 17 18 19 20 21 22
+// 23 24 25 26 27 28 29
+// 30 31
+//
+//   civil_day a(2015, 8, 13);  // get_weekday(a) == weekday::thursday
+//   civil_day b = next_weekday(a, weekday::thursday);  // b = 2015-08-20
+//   civil_day c = prev_weekday(a, weekday::thursday);  // c = 2015-08-06
+//
+//   civil_day d = ...
+//   // Gets the following Thursday if d is not already Thursday
+//   civil_day thurs1 = next_weekday(d - 1, weekday::thursday);
+//   // Gets the previous Thursday if d is not already Thursday
+//   civil_day thurs2 = prev_weekday(d + 1, weekday::thursday);
+//
+using detail::next_weekday;
+using detail::prev_weekday;
+
+// Returns the day-of-year for the given civil-time value.
+//
+//   civil_day a(2015, 1, 1);
+//   int yd_jan_1 = get_yearday(a);   // yd_jan_1 = 1
+//   civil_day b(2015, 12, 31);
+//   int yd_dec_31 = get_yearday(b);  // yd_dec_31 = 365
+//
+using detail::get_yearday;
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time_detail.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time_detail.h
new file mode 100644
index 0000000..4cde96f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/civil_time_detail.h	
@@ -0,0 +1,622 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
+#define ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
+
+#include <cstdint>
+#include <limits>
+#include <ostream>
+#include <type_traits>
+
+#include "absl/base/config.h"
+
+// Disable constexpr support unless we are in C++14 mode.
+#if __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
+#define CONSTEXPR_D constexpr  // data
+#define CONSTEXPR_F constexpr  // function
+#define CONSTEXPR_M constexpr  // member
+#else
+#define CONSTEXPR_D const
+#define CONSTEXPR_F inline
+#define CONSTEXPR_M
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// Support years that at least span the range of 64-bit time_t values.
+using year_t = std::int_fast64_t;
+
+// Type alias that indicates an argument is not normalized (e.g., the
+// constructor parameters and operands/results of addition/subtraction).
+using diff_t = std::int_fast64_t;
+
+namespace detail {
+
+// Type aliases that indicate normalized argument values.
+using month_t = std::int_fast8_t;   // [1:12]
+using day_t = std::int_fast8_t;     // [1:31]
+using hour_t = std::int_fast8_t;    // [0:23]
+using minute_t = std::int_fast8_t;  // [0:59]
+using second_t = std::int_fast8_t;  // [0:59]
+
+// Normalized civil-time fields: Y-M-D HH:MM:SS.
+struct fields {
+  CONSTEXPR_M fields(year_t year, month_t month, day_t day, hour_t hour,
+                     minute_t minute, second_t second)
+      : y(year), m(month), d(day), hh(hour), mm(minute), ss(second) {}
+  std::int_least64_t y;
+  std::int_least8_t m;
+  std::int_least8_t d;
+  std::int_least8_t hh;
+  std::int_least8_t mm;
+  std::int_least8_t ss;
+};
+
+struct second_tag {};
+struct minute_tag : second_tag {};
+struct hour_tag : minute_tag {};
+struct day_tag : hour_tag {};
+struct month_tag : day_tag {};
+struct year_tag : month_tag {};
+
+////////////////////////////////////////////////////////////////////////
+
+// Field normalization (without avoidable overflow).
+
+namespace impl {
+
+CONSTEXPR_F bool is_leap_year(year_t y) noexcept {
+  return y % 4 == 0 && (y % 100 != 0 || y % 400 == 0);
+}
+CONSTEXPR_F int year_index(year_t y, month_t m) noexcept {
+  return (static_cast<int>((y + (m > 2)) % 400) + 400) % 400;
+}
+CONSTEXPR_F int days_per_century(year_t y, month_t m) noexcept {
+  const int yi = year_index(y, m);
+  return 36524 + (yi == 0 || yi > 300);
+}
+CONSTEXPR_F int days_per_4years(year_t y, month_t m) noexcept {
+  const int yi = year_index(y, m);
+  return 1460 + (yi == 0 || yi > 300 || (yi - 1) % 100 < 96);
+}
+CONSTEXPR_F int days_per_year(year_t y, month_t m) noexcept {
+  return is_leap_year(y + (m > 2)) ? 366 : 365;
+}
+CONSTEXPR_F int days_per_month(year_t y, month_t m) noexcept {
+  CONSTEXPR_D int k_days_per_month[1 + 12] = {
+      -1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31  // non leap year
+  };
+  return k_days_per_month[m] + (m == 2 && is_leap_year(y));
+}
+
+CONSTEXPR_F fields n_day(year_t y, month_t m, diff_t d, diff_t cd, hour_t hh,
+                         minute_t mm, second_t ss) noexcept {
+  y += (cd / 146097) * 400;
+  cd %= 146097;
+  if (cd < 0) {
+    y -= 400;
+    cd += 146097;
+  }
+  y += (d / 146097) * 400;
+  d = d % 146097 + cd;
+  if (d > 0) {
+    if (d > 146097) {
+      y += 400;
+      d -= 146097;
+    }
+  } else {
+    if (d > -365) {
+      // We often hit the previous year when stepping a civil time backwards,
+      // so special case it to avoid counting up by 100/4/1-year chunks.
+      y -= 1;
+      d += days_per_year(y, m);
+    } else {
+      y -= 400;
+      d += 146097;
+    }
+  }
+  if (d > 365) {
+    for (int n = days_per_century(y, m); d > n; n = days_per_century(y, m)) {
+      d -= n;
+      y += 100;
+    }
+    for (int n = days_per_4years(y, m); d > n; n = days_per_4years(y, m)) {
+      d -= n;
+      y += 4;
+    }
+    for (int n = days_per_year(y, m); d > n; n = days_per_year(y, m)) {
+      d -= n;
+      ++y;
+    }
+  }
+  if (d > 28) {
+    for (int n = days_per_month(y, m); d > n; n = days_per_month(y, m)) {
+      d -= n;
+      if (++m > 12) {
+        ++y;
+        m = 1;
+      }
+    }
+  }
+  return fields(y, m, static_cast<day_t>(d), hh, mm, ss);
+}
+CONSTEXPR_F fields n_mon(year_t y, diff_t m, diff_t d, diff_t cd, hour_t hh,
+                         minute_t mm, second_t ss) noexcept {
+  if (m != 12) {
+    y += m / 12;
+    m %= 12;
+    if (m <= 0) {
+      y -= 1;
+      m += 12;
+    }
+  }
+  return n_day(y, static_cast<month_t>(m), d, cd, hh, mm, ss);
+}
+CONSTEXPR_F fields n_hour(year_t y, diff_t m, diff_t d, diff_t cd, diff_t hh,
+                          minute_t mm, second_t ss) noexcept {
+  cd += hh / 24;
+  hh %= 24;
+  if (hh < 0) {
+    cd -= 1;
+    hh += 24;
+  }
+  return n_mon(y, m, d, cd, static_cast<hour_t>(hh), mm, ss);
+}
+CONSTEXPR_F fields n_min(year_t y, diff_t m, diff_t d, diff_t hh, diff_t ch,
+                         diff_t mm, second_t ss) noexcept {
+  ch += mm / 60;
+  mm %= 60;
+  if (mm < 0) {
+    ch -= 1;
+    mm += 60;
+  }
+  return n_hour(y, m, d, hh / 24 + ch / 24, hh % 24 + ch % 24,
+                static_cast<minute_t>(mm), ss);
+}
+CONSTEXPR_F fields n_sec(year_t y, diff_t m, diff_t d, diff_t hh, diff_t mm,
+                         diff_t ss) noexcept {
+  // Optimization for when (non-constexpr) fields are already normalized.
+  if (0 <= ss && ss < 60) {
+    const second_t nss = static_cast<second_t>(ss);
+    if (0 <= mm && mm < 60) {
+      const minute_t nmm = static_cast<minute_t>(mm);
+      if (0 <= hh && hh < 24) {
+        const hour_t nhh = static_cast<hour_t>(hh);
+        if (1 <= d && d <= 28 && 1 <= m && m <= 12) {
+          const day_t nd = static_cast<day_t>(d);
+          const month_t nm = static_cast<month_t>(m);
+          return fields(y, nm, nd, nhh, nmm, nss);
+        }
+        return n_mon(y, m, d, 0, nhh, nmm, nss);
+      }
+      return n_hour(y, m, d, hh / 24, hh % 24, nmm, nss);
+    }
+    return n_min(y, m, d, hh, mm / 60, mm % 60, nss);
+  }
+  diff_t cm = ss / 60;
+  ss %= 60;
+  if (ss < 0) {
+    cm -= 1;
+    ss += 60;
+  }
+  return n_min(y, m, d, hh, mm / 60 + cm / 60, mm % 60 + cm % 60,
+               static_cast<second_t>(ss));
+}
+
+}  // namespace impl
+
+////////////////////////////////////////////////////////////////////////
+
+// Increments the indicated (normalized) field by "n".
+CONSTEXPR_F fields step(second_tag, fields f, diff_t n) noexcept {
+  return impl::n_sec(f.y, f.m, f.d, f.hh, f.mm + n / 60, f.ss + n % 60);
+}
+CONSTEXPR_F fields step(minute_tag, fields f, diff_t n) noexcept {
+  return impl::n_min(f.y, f.m, f.d, f.hh + n / 60, 0, f.mm + n % 60, f.ss);
+}
+CONSTEXPR_F fields step(hour_tag, fields f, diff_t n) noexcept {
+  return impl::n_hour(f.y, f.m, f.d + n / 24, 0, f.hh + n % 24, f.mm, f.ss);
+}
+CONSTEXPR_F fields step(day_tag, fields f, diff_t n) noexcept {
+  return impl::n_day(f.y, f.m, f.d, n, f.hh, f.mm, f.ss);
+}
+CONSTEXPR_F fields step(month_tag, fields f, diff_t n) noexcept {
+  return impl::n_mon(f.y + n / 12, f.m + n % 12, f.d, 0, f.hh, f.mm, f.ss);
+}
+CONSTEXPR_F fields step(year_tag, fields f, diff_t n) noexcept {
+  return fields(f.y + n, f.m, f.d, f.hh, f.mm, f.ss);
+}
+
+////////////////////////////////////////////////////////////////////////
+
+namespace impl {
+
+// Returns (v * f + a) but avoiding intermediate overflow when possible.
+CONSTEXPR_F diff_t scale_add(diff_t v, diff_t f, diff_t a) noexcept {
+  return (v < 0) ? ((v + 1) * f + a) - f : ((v - 1) * f + a) + f;
+}
+
+// Map a (normalized) Y/M/D to the number of days before/after 1970-01-01.
+// Probably overflows for years outside [-292277022656:292277026595].
+CONSTEXPR_F diff_t ymd_ord(year_t y, month_t m, day_t d) noexcept {
+  const diff_t eyear = (m <= 2) ? y - 1 : y;
+  const diff_t era = (eyear >= 0 ? eyear : eyear - 399) / 400;
+  const diff_t yoe = eyear - era * 400;
+  const diff_t doy = (153 * (m + (m > 2 ? -3 : 9)) + 2) / 5 + d - 1;
+  const diff_t doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;
+  return era * 146097 + doe - 719468;
+}
+
+// Returns the difference in days between two normalized Y-M-D tuples.
+// ymd_ord() will encounter integer overflow given extreme year values,
+// yet the difference between two such extreme values may actually be
+// small, so we take a little care to avoid overflow when possible by
+// exploiting the 146097-day cycle.
+CONSTEXPR_F diff_t day_difference(year_t y1, month_t m1, day_t d1, year_t y2,
+                                  month_t m2, day_t d2) noexcept {
+  const diff_t a_c4_off = y1 % 400;
+  const diff_t b_c4_off = y2 % 400;
+  diff_t c4_diff = (y1 - a_c4_off) - (y2 - b_c4_off);
+  diff_t delta = ymd_ord(a_c4_off, m1, d1) - ymd_ord(b_c4_off, m2, d2);
+  if (c4_diff > 0 && delta < 0) {
+    delta += 2 * 146097;
+    c4_diff -= 2 * 400;
+  } else if (c4_diff < 0 && delta > 0) {
+    delta -= 2 * 146097;
+    c4_diff += 2 * 400;
+  }
+  return (c4_diff / 400 * 146097) + delta;
+}
+
+}  // namespace impl
+
+// Returns the difference between fields structs using the indicated unit.
+CONSTEXPR_F diff_t difference(year_tag, fields f1, fields f2) noexcept {
+  return f1.y - f2.y;
+}
+CONSTEXPR_F diff_t difference(month_tag, fields f1, fields f2) noexcept {
+  return impl::scale_add(difference(year_tag{}, f1, f2), 12, (f1.m - f2.m));
+}
+CONSTEXPR_F diff_t difference(day_tag, fields f1, fields f2) noexcept {
+  return impl::day_difference(f1.y, f1.m, f1.d, f2.y, f2.m, f2.d);
+}
+CONSTEXPR_F diff_t difference(hour_tag, fields f1, fields f2) noexcept {
+  return impl::scale_add(difference(day_tag{}, f1, f2), 24, (f1.hh - f2.hh));
+}
+CONSTEXPR_F diff_t difference(minute_tag, fields f1, fields f2) noexcept {
+  return impl::scale_add(difference(hour_tag{}, f1, f2), 60, (f1.mm - f2.mm));
+}
+CONSTEXPR_F diff_t difference(second_tag, fields f1, fields f2) noexcept {
+  return impl::scale_add(difference(minute_tag{}, f1, f2), 60, f1.ss - f2.ss);
+}
+
+////////////////////////////////////////////////////////////////////////
+
+// Aligns the (normalized) fields struct to the indicated field.
+CONSTEXPR_F fields align(second_tag, fields f) noexcept { return f; }
+CONSTEXPR_F fields align(minute_tag, fields f) noexcept {
+  return fields{f.y, f.m, f.d, f.hh, f.mm, 0};
+}
+CONSTEXPR_F fields align(hour_tag, fields f) noexcept {
+  return fields{f.y, f.m, f.d, f.hh, 0, 0};
+}
+CONSTEXPR_F fields align(day_tag, fields f) noexcept {
+  return fields{f.y, f.m, f.d, 0, 0, 0};
+}
+CONSTEXPR_F fields align(month_tag, fields f) noexcept {
+  return fields{f.y, f.m, 1, 0, 0, 0};
+}
+CONSTEXPR_F fields align(year_tag, fields f) noexcept {
+  return fields{f.y, 1, 1, 0, 0, 0};
+}
+
+////////////////////////////////////////////////////////////////////////
+
+namespace impl {
+
+template <typename H>
+H AbslHashValueImpl(second_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y, f.m, f.d, f.hh, f.mm, f.ss);
+}
+template <typename H>
+H AbslHashValueImpl(minute_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y, f.m, f.d, f.hh, f.mm);
+}
+template <typename H>
+H AbslHashValueImpl(hour_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y, f.m, f.d, f.hh);
+}
+template <typename H>
+H AbslHashValueImpl(day_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y, f.m, f.d);
+}
+template <typename H>
+H AbslHashValueImpl(month_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y, f.m);
+}
+template <typename H>
+H AbslHashValueImpl(year_tag, H h, fields f) {
+  return H::combine(std::move(h), f.y);
+}
+
+}  // namespace impl
+
+////////////////////////////////////////////////////////////////////////
+
+template <typename T>
+class civil_time {
+ public:
+  explicit CONSTEXPR_M civil_time(year_t y, diff_t m = 1, diff_t d = 1,
+                                  diff_t hh = 0, diff_t mm = 0,
+                                  diff_t ss = 0) noexcept
+      : civil_time(impl::n_sec(y, m, d, hh, mm, ss)) {}
+
+  CONSTEXPR_M civil_time() noexcept : f_{1970, 1, 1, 0, 0, 0} {}
+  civil_time(const civil_time&) = default;
+  civil_time& operator=(const civil_time&) = default;
+
+  // Conversion between civil times of different alignment. Conversion to
+  // a more precise alignment is allowed implicitly (e.g., day -> hour),
+  // but conversion where information is discarded must be explicit
+  // (e.g., second -> minute).
+  template <typename U, typename S>
+  using preserves_data =
+      typename std::enable_if<std::is_base_of<U, S>::value>::type;
+  template <typename U>
+  CONSTEXPR_M civil_time(const civil_time<U>& ct,
+                         preserves_data<T, U>* = nullptr) noexcept
+      : civil_time(ct.f_) {}
+  template <typename U>
+  explicit CONSTEXPR_M civil_time(const civil_time<U>& ct,
+                                  preserves_data<U, T>* = nullptr) noexcept
+      : civil_time(ct.f_) {}
+
+  // Factories for the maximum/minimum representable civil_time.
+  static CONSTEXPR_F civil_time(max)() {
+    const auto max_year = (std::numeric_limits<std::int_least64_t>::max)();
+    return civil_time(max_year, 12, 31, 23, 59, 59);
+  }
+  static CONSTEXPR_F civil_time(min)() {
+    const auto min_year = (std::numeric_limits<std::int_least64_t>::min)();
+    return civil_time(min_year, 1, 1, 0, 0, 0);
+  }
+
+  // Field accessors.  Note: All but year() return an int.
+  CONSTEXPR_M year_t year() const noexcept { return f_.y; }
+  CONSTEXPR_M int month() const noexcept { return f_.m; }
+  CONSTEXPR_M int day() const noexcept { return f_.d; }
+  CONSTEXPR_M int hour() const noexcept { return f_.hh; }
+  CONSTEXPR_M int minute() const noexcept { return f_.mm; }
+  CONSTEXPR_M int second() const noexcept { return f_.ss; }
+
+  // Assigning arithmetic.
+  CONSTEXPR_M civil_time& operator+=(diff_t n) noexcept {
+    f_ = step(T{}, f_, n);
+    return *this;
+  }
+  CONSTEXPR_M civil_time& operator-=(diff_t n) noexcept {
+    if (n != (std::numeric_limits<diff_t>::min)()) {
+      f_ = step(T{}, f_, -n);
+    } else {
+      f_ = step(T{}, step(T{}, f_, -(n + 1)), 1);
+    }
+    return *this;
+  }
+  CONSTEXPR_M civil_time& operator++() noexcept { return *this += 1; }
+  CONSTEXPR_M civil_time operator++(int) noexcept {
+    const civil_time a = *this;
+    ++*this;
+    return a;
+  }
+  CONSTEXPR_M civil_time& operator--() noexcept { return *this -= 1; }
+  CONSTEXPR_M civil_time operator--(int) noexcept {
+    const civil_time a = *this;
+    --*this;
+    return a;
+  }
+
+  // Binary arithmetic operators.
+  friend CONSTEXPR_F civil_time operator+(civil_time a, diff_t n) noexcept {
+    return a += n;
+  }
+  friend CONSTEXPR_F civil_time operator+(diff_t n, civil_time a) noexcept {
+    return a += n;
+  }
+  friend CONSTEXPR_F civil_time operator-(civil_time a, diff_t n) noexcept {
+    return a -= n;
+  }
+  friend CONSTEXPR_F diff_t operator-(civil_time lhs, civil_time rhs) noexcept {
+    return difference(T{}, lhs.f_, rhs.f_);
+  }
+
+  template <typename H>
+  friend H AbslHashValue(H h, civil_time a) {
+    return impl::AbslHashValueImpl(T{}, std::move(h), a.f_);
+  }
+
+ private:
+  // All instantiations of this template are allowed to call the following
+  // private constructor and access the private fields member.
+  template <typename U>
+  friend class civil_time;
+
+  // The designated constructor that all others eventually call.
+  explicit CONSTEXPR_M civil_time(fields f) noexcept : f_(align(T{}, f)) {}
+
+  fields f_;
+};
+
+// Disallows difference between differently aligned types.
+// auto n = civil_day(...) - civil_hour(...);  // would be confusing.
+template <typename T, typename U>
+CONSTEXPR_F diff_t operator-(civil_time<T>, civil_time<U>) = delete;
+
+using civil_year = civil_time<year_tag>;
+using civil_month = civil_time<month_tag>;
+using civil_day = civil_time<day_tag>;
+using civil_hour = civil_time<hour_tag>;
+using civil_minute = civil_time<minute_tag>;
+using civil_second = civil_time<second_tag>;
+
+////////////////////////////////////////////////////////////////////////
+
+// Relational operators that work with differently aligned objects.
+// Always compares all six fields.
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator<(const civil_time<T1>& lhs,
+                           const civil_time<T2>& rhs) noexcept {
+  return (
+      lhs.year() < rhs.year() ||
+      (lhs.year() == rhs.year() &&
+       (lhs.month() < rhs.month() ||
+        (lhs.month() == rhs.month() &&
+         (lhs.day() < rhs.day() || (lhs.day() == rhs.day() &&
+                                    (lhs.hour() < rhs.hour() ||
+                                     (lhs.hour() == rhs.hour() &&
+                                      (lhs.minute() < rhs.minute() ||
+                                       (lhs.minute() == rhs.minute() &&
+                                        (lhs.second() < rhs.second())))))))))));
+}
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator<=(const civil_time<T1>& lhs,
+                            const civil_time<T2>& rhs) noexcept {
+  return !(rhs < lhs);
+}
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator>=(const civil_time<T1>& lhs,
+                            const civil_time<T2>& rhs) noexcept {
+  return !(lhs < rhs);
+}
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator>(const civil_time<T1>& lhs,
+                           const civil_time<T2>& rhs) noexcept {
+  return rhs < lhs;
+}
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator==(const civil_time<T1>& lhs,
+                            const civil_time<T2>& rhs) noexcept {
+  return lhs.year() == rhs.year() && lhs.month() == rhs.month() &&
+         lhs.day() == rhs.day() && lhs.hour() == rhs.hour() &&
+         lhs.minute() == rhs.minute() && lhs.second() == rhs.second();
+}
+template <typename T1, typename T2>
+CONSTEXPR_F bool operator!=(const civil_time<T1>& lhs,
+                            const civil_time<T2>& rhs) noexcept {
+  return !(lhs == rhs);
+}
+
+////////////////////////////////////////////////////////////////////////
+
+enum class weekday {
+  monday,
+  tuesday,
+  wednesday,
+  thursday,
+  friday,
+  saturday,
+  sunday,
+};
+
+CONSTEXPR_F weekday get_weekday(const civil_second& cs) noexcept {
+  CONSTEXPR_D weekday k_weekday_by_mon_off[13] = {
+      weekday::monday,    weekday::tuesday,  weekday::wednesday,
+      weekday::thursday,  weekday::friday,   weekday::saturday,
+      weekday::sunday,    weekday::monday,   weekday::tuesday,
+      weekday::wednesday, weekday::thursday, weekday::friday,
+      weekday::saturday,
+  };
+  CONSTEXPR_D int k_weekday_offsets[1 + 12] = {
+      -1, 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4,
+  };
+  year_t wd = 2400 + (cs.year() % 400) - (cs.month() < 3);
+  wd += wd / 4 - wd / 100 + wd / 400;
+  wd += k_weekday_offsets[cs.month()] + cs.day();
+  return k_weekday_by_mon_off[wd % 7 + 6];
+}
+
+////////////////////////////////////////////////////////////////////////
+
+CONSTEXPR_F civil_day next_weekday(civil_day cd, weekday wd) noexcept {
+  CONSTEXPR_D weekday k_weekdays_forw[14] = {
+      weekday::monday,    weekday::tuesday,  weekday::wednesday,
+      weekday::thursday,  weekday::friday,   weekday::saturday,
+      weekday::sunday,    weekday::monday,   weekday::tuesday,
+      weekday::wednesday, weekday::thursday, weekday::friday,
+      weekday::saturday,  weekday::sunday,
+  };
+  weekday base = get_weekday(cd);
+  for (int i = 0;; ++i) {
+    if (base == k_weekdays_forw[i]) {
+      for (int j = i + 1;; ++j) {
+        if (wd == k_weekdays_forw[j]) {
+          return cd + (j - i);
+        }
+      }
+    }
+  }
+}
+
+CONSTEXPR_F civil_day prev_weekday(civil_day cd, weekday wd) noexcept {
+  CONSTEXPR_D weekday k_weekdays_back[14] = {
+      weekday::sunday,   weekday::saturday,  weekday::friday,
+      weekday::thursday, weekday::wednesday, weekday::tuesday,
+      weekday::monday,   weekday::sunday,    weekday::saturday,
+      weekday::friday,   weekday::thursday,  weekday::wednesday,
+      weekday::tuesday,  weekday::monday,
+  };
+  weekday base = get_weekday(cd);
+  for (int i = 0;; ++i) {
+    if (base == k_weekdays_back[i]) {
+      for (int j = i + 1;; ++j) {
+        if (wd == k_weekdays_back[j]) {
+          return cd - (j - i);
+        }
+      }
+    }
+  }
+}
+
+CONSTEXPR_F int get_yearday(const civil_second& cs) noexcept {
+  CONSTEXPR_D int k_month_offsets[1 + 12] = {
+      -1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
+  };
+  const int feb29 = (cs.month() > 2 && impl::is_leap_year(cs.year()));
+  return k_month_offsets[cs.month()] + feb29 + cs.day();
+}
+
+////////////////////////////////////////////////////////////////////////
+
+std::ostream& operator<<(std::ostream& os, const civil_year& y);
+std::ostream& operator<<(std::ostream& os, const civil_month& m);
+std::ostream& operator<<(std::ostream& os, const civil_day& d);
+std::ostream& operator<<(std::ostream& os, const civil_hour& h);
+std::ostream& operator<<(std::ostream& os, const civil_minute& m);
+std::ostream& operator<<(std::ostream& os, const civil_second& s);
+std::ostream& operator<<(std::ostream& os, weekday wd);
+
+}  // namespace detail
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef CONSTEXPR_M
+#undef CONSTEXPR_F
+#undef CONSTEXPR_D
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_DETAIL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/time_zone.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/time_zone.h
new file mode 100644
index 0000000..d05147a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/time_zone.h	
@@ -0,0 +1,384 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+// A library for translating between absolute times (represented by
+// std::chrono::time_points of the std::chrono::system_clock) and civil
+// times (represented by cctz::civil_second) using the rules defined by
+// a time zone (cctz::time_zone).
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
+
+#include <chrono>
+#include <cstdint>
+#include <string>
+#include <utility>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// Convenience aliases. Not intended as public API points.
+template <typename D>
+using time_point = std::chrono::time_point<std::chrono::system_clock, D>;
+using seconds = std::chrono::duration<std::int_fast64_t>;
+using sys_seconds = seconds;  // Deprecated.  Use cctz::seconds instead.
+
+namespace detail {
+template <typename D>
+inline std::pair<time_point<seconds>, D> split_seconds(
+    const time_point<D>& tp) {
+  auto sec = std::chrono::time_point_cast<seconds>(tp);
+  auto sub = tp - sec;
+  if (sub.count() < 0) {
+    sec -= seconds(1);
+    sub += seconds(1);
+  }
+  return {sec, std::chrono::duration_cast<D>(sub)};
+}
+inline std::pair<time_point<seconds>, seconds> split_seconds(
+    const time_point<seconds>& tp) {
+  return {tp, seconds::zero()};
+}
+}  // namespace detail
+
+// cctz::time_zone is an opaque, small, value-type class representing a
+// geo-political region within which particular rules are used for mapping
+// between absolute and civil times. Time zones are named using the TZ
+// identifiers from the IANA Time Zone Database, such as "America/Los_Angeles"
+// or "Australia/Sydney". Time zones are created from factory functions such
+// as load_time_zone(). Note: strings like "PST" and "EDT" are not valid TZ
+// identifiers.
+//
+// Example:
+//   cctz::time_zone utc = cctz::utc_time_zone();
+//   cctz::time_zone pst = cctz::fixed_time_zone(std::chrono::hours(-8));
+//   cctz::time_zone loc = cctz::local_time_zone();
+//   cctz::time_zone lax;
+//   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
+//
+// See also:
+// - http://www.iana.org/time-zones
+// - https://en.wikipedia.org/wiki/Zoneinfo
+class time_zone {
+ public:
+  time_zone() : time_zone(nullptr) {}  // Equivalent to UTC
+  time_zone(const time_zone&) = default;
+  time_zone& operator=(const time_zone&) = default;
+
+  std::string name() const;
+
+  // An absolute_lookup represents the civil time (cctz::civil_second) within
+  // this time_zone at the given absolute time (time_point). There are
+  // additionally a few other fields that may be useful when working with
+  // older APIs, such as std::tm.
+  //
+  // Example:
+  //   const cctz::time_zone tz = ...
+  //   const auto tp = std::chrono::system_clock::now();
+  //   const cctz::time_zone::absolute_lookup al = tz.lookup(tp);
+  struct absolute_lookup {
+    civil_second cs;
+    // Note: The following fields exist for backward compatibility with older
+    // APIs. Accessing these fields directly is a sign of imprudent logic in
+    // the calling code. Modern time-related code should only access this data
+    // indirectly by way of cctz::format().
+    int offset;        // civil seconds east of UTC
+    bool is_dst;       // is offset non-standard?
+    const char* abbr;  // time-zone abbreviation (e.g., "PST")
+  };
+  absolute_lookup lookup(const time_point<seconds>& tp) const;
+  template <typename D>
+  absolute_lookup lookup(const time_point<D>& tp) const {
+    return lookup(detail::split_seconds(tp).first);
+  }
+
+  // A civil_lookup represents the absolute time(s) (time_point) that
+  // correspond to the given civil time (cctz::civil_second) within this
+  // time_zone. Usually the given civil time represents a unique instant
+  // in time, in which case the conversion is unambiguous. However,
+  // within this time zone, the given civil time may be skipped (e.g.,
+  // during a positive UTC offset shift), or repeated (e.g., during a
+  // negative UTC offset shift). To account for these possibilities,
+  // civil_lookup is richer than just a single time_point.
+  //
+  // In all cases the civil_lookup::kind enum will indicate the nature
+  // of the given civil-time argument, and the pre, trans, and post
+  // members will give the absolute time answers using the pre-transition
+  // offset, the transition point itself, and the post-transition offset,
+  // respectively (all three times are equal if kind == UNIQUE). If any
+  // of these three absolute times is outside the representable range of a
+  // time_point<seconds> the field is set to its maximum/minimum value.
+  //
+  // Example:
+  //   cctz::time_zone lax;
+  //   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
+  //
+  //   // A unique civil time.
+  //   auto jan01 = lax.lookup(cctz::civil_second(2011, 1, 1, 0, 0, 0));
+  //   // jan01.kind == cctz::time_zone::civil_lookup::UNIQUE
+  //   // jan01.pre    is 2011/01/01 00:00:00 -0800
+  //   // jan01.trans  is 2011/01/01 00:00:00 -0800
+  //   // jan01.post   is 2011/01/01 00:00:00 -0800
+  //
+  //   // A Spring DST transition, when there is a gap in civil time.
+  //   auto mar13 = lax.lookup(cctz::civil_second(2011, 3, 13, 2, 15, 0));
+  //   // mar13.kind == cctz::time_zone::civil_lookup::SKIPPED
+  //   // mar13.pre   is 2011/03/13 03:15:00 -0700
+  //   // mar13.trans is 2011/03/13 03:00:00 -0700
+  //   // mar13.post  is 2011/03/13 01:15:00 -0800
+  //
+  //   // A Fall DST transition, when civil times are repeated.
+  //   auto nov06 = lax.lookup(cctz::civil_second(2011, 11, 6, 1, 15, 0));
+  //   // nov06.kind == cctz::time_zone::civil_lookup::REPEATED
+  //   // nov06.pre   is 2011/11/06 01:15:00 -0700
+  //   // nov06.trans is 2011/11/06 01:00:00 -0800
+  //   // nov06.post  is 2011/11/06 01:15:00 -0800
+  struct civil_lookup {
+    enum civil_kind {
+      UNIQUE,    // the civil time was singular (pre == trans == post)
+      SKIPPED,   // the civil time did not exist (pre >= trans > post)
+      REPEATED,  // the civil time was ambiguous (pre < trans <= post)
+    } kind;
+    time_point<seconds> pre;    // uses the pre-transition offset
+    time_point<seconds> trans;  // instant of civil-offset change
+    time_point<seconds> post;   // uses the post-transition offset
+  };
+  civil_lookup lookup(const civil_second& cs) const;
+
+  // Finds the time of the next/previous offset change in this time zone.
+  //
+  // By definition, next_transition(tp, &trans) returns false when tp has
+  // its maximum value, and prev_transition(tp, &trans) returns false
+  // when tp has its minimum value. If the zone has no transitions, the
+  // result will also be false no matter what the argument.
+  //
+  // Otherwise, when tp has its minimum value, next_transition(tp, &trans)
+  // returns true and sets trans to the first recorded transition. Chains
+  // of calls to next_transition()/prev_transition() will eventually return
+  // false, but it is unspecified exactly when next_transition(tp, &trans)
+  // jumps to false, or what time is set by prev_transition(tp, &trans) for
+  // a very distant tp.
+  //
+  // Note: Enumeration of time-zone transitions is for informational purposes
+  // only. Modern time-related code should not care about when offset changes
+  // occur.
+  //
+  // Example:
+  //   cctz::time_zone nyc;
+  //   if (!cctz::load_time_zone("America/New_York", &nyc)) { ... }
+  //   const auto now = std::chrono::system_clock::now();
+  //   auto tp = cctz::time_point<cctz::seconds>::min();
+  //   cctz::time_zone::civil_transition trans;
+  //   while (tp <= now && nyc.next_transition(tp, &trans)) {
+  //     // transition: trans.from -> trans.to
+  //     tp = nyc.lookup(trans.to).trans;
+  //   }
+  struct civil_transition {
+    civil_second from;  // the civil time we jump from
+    civil_second to;    // the civil time we jump to
+  };
+  bool next_transition(const time_point<seconds>& tp,
+                       civil_transition* trans) const;
+  template <typename D>
+  bool next_transition(const time_point<D>& tp, civil_transition* trans) const {
+    return next_transition(detail::split_seconds(tp).first, trans);
+  }
+  bool prev_transition(const time_point<seconds>& tp,
+                       civil_transition* trans) const;
+  template <typename D>
+  bool prev_transition(const time_point<D>& tp, civil_transition* trans) const {
+    return prev_transition(detail::split_seconds(tp).first, trans);
+  }
+
+  // version() and description() provide additional information about the
+  // time zone. The content of each of the returned strings is unspecified,
+  // however, when the IANA Time Zone Database is the underlying data source
+  // the version() std::string will be in the familar form (e.g, "2018e") or
+  // empty when unavailable.
+  //
+  // Note: These functions are for informational or testing purposes only.
+  std::string version() const;  // empty when unknown
+  std::string description() const;
+
+  // Relational operators.
+  friend bool operator==(time_zone lhs, time_zone rhs) {
+    return &lhs.effective_impl() == &rhs.effective_impl();
+  }
+  friend bool operator!=(time_zone lhs, time_zone rhs) { return !(lhs == rhs); }
+
+  template <typename H>
+  friend H AbslHashValue(H h, time_zone tz) {
+    return H::combine(std::move(h), &tz.effective_impl());
+  }
+
+  class Impl;
+
+ private:
+  explicit time_zone(const Impl* impl) : impl_(impl) {}
+  const Impl& effective_impl() const;  // handles implicit UTC
+  const Impl* impl_;
+};
+
+// Loads the named time zone. May perform I/O on the initial load.
+// If the name is invalid, or some other kind of error occurs, returns
+// false and "*tz" is set to the UTC time zone.
+bool load_time_zone(const std::string& name, time_zone* tz);
+
+// Returns a time_zone representing UTC. Cannot fail.
+time_zone utc_time_zone();
+
+// Returns a time zone that is a fixed offset (seconds east) from UTC.
+// Note: If the absolute value of the offset is greater than 24 hours
+// you'll get UTC (i.e., zero offset) instead.
+time_zone fixed_time_zone(const seconds& offset);
+
+// Returns a time zone representing the local time zone. Falls back to UTC.
+// Note: local_time_zone.name() may only be something like "localtime".
+time_zone local_time_zone();
+
+// Returns the civil time (cctz::civil_second) within the given time zone at
+// the given absolute time (time_point). Since the additional fields provided
+// by the time_zone::absolute_lookup struct should rarely be needed in modern
+// code, this convert() function is simpler and should be preferred.
+template <typename D>
+inline civil_second convert(const time_point<D>& tp, const time_zone& tz) {
+  return tz.lookup(tp).cs;
+}
+
+// Returns the absolute time (time_point) that corresponds to the given civil
+// time within the given time zone. If the civil time is not unique (i.e., if
+// it was either repeated or non-existent), then the returned time_point is
+// the best estimate that preserves relative order. That is, this function
+// guarantees that if cs1 < cs2, then convert(cs1, tz) <= convert(cs2, tz).
+inline time_point<seconds> convert(const civil_second& cs,
+                                   const time_zone& tz) {
+  const time_zone::civil_lookup cl = tz.lookup(cs);
+  if (cl.kind == time_zone::civil_lookup::SKIPPED) return cl.trans;
+  return cl.pre;
+}
+
+namespace detail {
+using femtoseconds = std::chrono::duration<std::int_fast64_t, std::femto>;
+std::string format(const std::string&, const time_point<seconds>&,
+                   const femtoseconds&, const time_zone&);
+bool parse(const std::string&, const std::string&, const time_zone&,
+           time_point<seconds>*, femtoseconds*, std::string* err = nullptr);
+}  // namespace detail
+
+// Formats the given time_point in the given cctz::time_zone according to
+// the provided format string. Uses strftime()-like formatting options,
+// with the following extensions:
+//
+//   - %Ez  - RFC3339-compatible numeric UTC offset (+hh:mm or -hh:mm)
+//   - %E*z - Full-resolution numeric UTC offset (+hh:mm:ss or -hh:mm:ss)
+//   - %E#S - Seconds with # digits of fractional precision
+//   - %E*S - Seconds with full fractional precision (a literal '*')
+//   - %E#f - Fractional seconds with # digits of precision
+//   - %E*f - Fractional seconds with full precision (a literal '*')
+//   - %E4Y - Four-character years (-999 ... -001, 0000, 0001 ... 9999)
+//
+// Note that %E0S behaves like %S, and %E0f produces no characters. In
+// contrast %E*f always produces at least one digit, which may be '0'.
+//
+// Note that %Y produces as many characters as it takes to fully render the
+// year. A year outside of [-999:9999] when formatted with %E4Y will produce
+// more than four characters, just like %Y.
+//
+// Tip: Format strings should include the UTC offset (e.g., %z, %Ez, or %E*z)
+// so that the resulting string uniquely identifies an absolute time.
+//
+// Example:
+//   cctz::time_zone lax;
+//   if (!cctz::load_time_zone("America/Los_Angeles", &lax)) { ... }
+//   auto tp = cctz::convert(cctz::civil_second(2013, 1, 2, 3, 4, 5), lax);
+//   std::string f = cctz::format("%H:%M:%S", tp, lax);  // "03:04:05"
+//   f = cctz::format("%H:%M:%E3S", tp, lax);            // "03:04:05.000"
+template <typename D>
+inline std::string format(const std::string& fmt, const time_point<D>& tp,
+                          const time_zone& tz) {
+  const auto p = detail::split_seconds(tp);
+  const auto n = std::chrono::duration_cast<detail::femtoseconds>(p.second);
+  return detail::format(fmt, p.first, n, tz);
+}
+
+// Parses an input string according to the provided format string and
+// returns the corresponding time_point. Uses strftime()-like formatting
+// options, with the same extensions as cctz::format(), but with the
+// exceptions that %E#S is interpreted as %E*S, and %E#f as %E*f. %Ez
+// and %E*z also accept the same inputs.
+//
+// %Y consumes as many numeric characters as it can, so the matching data
+// should always be terminated with a non-numeric. %E4Y always consumes
+// exactly four characters, including any sign.
+//
+// Unspecified fields are taken from the default date and time of ...
+//
+//   "1970-01-01 00:00:00.0 +0000"
+//
+// For example, parsing a string of "15:45" (%H:%M) will return a time_point
+// that represents "1970-01-01 15:45:00.0 +0000".
+//
+// Note that parse() returns time instants, so it makes most sense to parse
+// fully-specified date/time strings that include a UTC offset (%z, %Ez, or
+// %E*z).
+//
+// Note also that parse() only heeds the fields year, month, day, hour,
+// minute, (fractional) second, and UTC offset. Other fields, like weekday (%a
+// or %A), while parsed for syntactic validity, are ignored in the conversion.
+//
+// Date and time fields that are out-of-range will be treated as errors rather
+// than normalizing them like cctz::civil_second() would do. For example, it
+// is an error to parse the date "Oct 32, 2013" because 32 is out of range.
+//
+// A second of ":60" is normalized to ":00" of the following minute with
+// fractional seconds discarded. The following table shows how the given
+// seconds and subseconds will be parsed:
+//
+//   "59.x" -> 59.x  // exact
+//   "60.x" -> 00.0  // normalized
+//   "00.x" -> 00.x  // exact
+//
+// Errors are indicated by returning false.
+//
+// Example:
+//   const cctz::time_zone tz = ...
+//   std::chrono::system_clock::time_point tp;
+//   if (cctz::parse("%Y-%m-%d", "2015-10-09", tz, &tp)) {
+//     ...
+//   }
+template <typename D>
+inline bool parse(const std::string& fmt, const std::string& input,
+                  const time_zone& tz, time_point<D>* tpp) {
+  time_point<seconds> sec;
+  detail::femtoseconds fs;
+  const bool b = detail::parse(fmt, input, tz, &sec, &fs);
+  if (b) {
+    // TODO: Return false if unrepresentable as a time_point<D>.
+    *tpp = std::chrono::time_point_cast<D>(sec);
+    *tpp += std::chrono::duration_cast<D>(fs);
+  }
+  return b;
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/zone_info_source.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/zone_info_source.h
new file mode 100644
index 0000000..912b44b
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/include/cctz/zone_info_source.h	
@@ -0,0 +1,102 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
+#define ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
+
+#include <cstddef>
+#include <functional>
+#include <memory>
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// A stdio-like interface for providing zoneinfo data for a particular zone.
+class ZoneInfoSource {
+ public:
+  virtual ~ZoneInfoSource();
+
+  virtual std::size_t Read(void* ptr, std::size_t size) = 0;  // like fread()
+  virtual int Skip(std::size_t offset) = 0;                   // like fseek()
+
+  // Until the zoneinfo data supports versioning information, we provide
+  // a way for a ZoneInfoSource to indicate it out-of-band.  The default
+  // implementation returns an empty std::string.
+  virtual std::string Version() const;
+};
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz_extension {
+
+// A function-pointer type for a factory that returns a ZoneInfoSource
+// given the name of a time zone and a fallback factory.  Returns null
+// when the data for the named zone cannot be found.
+using ZoneInfoSourceFactory =
+    std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> (*)(
+        const std::string&,
+        const std::function<std::unique_ptr<
+            absl::time_internal::cctz::ZoneInfoSource>(const std::string&)>&);
+
+// The user can control the mapping of zone names to zoneinfo data by
+// providing a definition for cctz_extension::zone_info_source_factory.
+// For example, given functions my_factory() and my_other_factory() that
+// can return a ZoneInfoSource for a named zone, we could inject them into
+// cctz::load_time_zone() with:
+//
+//   namespace cctz_extension {
+//   namespace {
+//   std::unique_ptr<cctz::ZoneInfoSource> CustomFactory(
+//       const std::string& name,
+//       const std::function<std::unique_ptr<cctz::ZoneInfoSource>(
+//           const std::string& name)>& fallback_factory) {
+//     if (auto zip = my_factory(name)) return zip;
+//     if (auto zip = fallback_factory(name)) return zip;
+//     if (auto zip = my_other_factory(name)) return zip;
+//     return nullptr;
+//   }
+//   }  // namespace
+//   ZoneInfoSourceFactory zone_info_source_factory = CustomFactory;
+//   }  // namespace cctz_extension
+//
+// This might be used, say, to use zoneinfo data embedded in the program,
+// or read from a (possibly compressed) file archive, or both.
+//
+// cctz_extension::zone_info_source_factory() will be called:
+//   (1) from the same thread as the cctz::load_time_zone() call,
+//   (2) only once for any zone name, and
+//   (3) serially (i.e., no concurrent execution).
+//
+// The fallback factory obtains zoneinfo data by reading files in ${TZDIR},
+// and it is used automatically when no zone_info_source_factory definition
+// is linked into the program.
+extern ZoneInfoSourceFactory zone_info_source_factory;
+
+}  // namespace cctz_extension
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/civil_time_detail.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/civil_time_detail.cc
new file mode 100644
index 0000000..0b07e39
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/civil_time_detail.cc	
@@ -0,0 +1,94 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "absl/time/internal/cctz/include/cctz/civil_time_detail.h"
+
+#include <iomanip>
+#include <ostream>
+#include <sstream>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+namespace detail {
+
+// Output stream operators output a format matching YYYY-MM-DDThh:mm:ss,
+// while omitting fields inferior to the type's alignment. For example,
+// civil_day is formatted only as YYYY-MM-DD.
+std::ostream& operator<<(std::ostream& os, const civil_year& y) {
+  std::stringstream ss;
+  ss << y.year();  // No padding.
+  return os << ss.str();
+}
+std::ostream& operator<<(std::ostream& os, const civil_month& m) {
+  std::stringstream ss;
+  ss << civil_year(m) << '-';
+  ss << std::setfill('0') << std::setw(2) << m.month();
+  return os << ss.str();
+}
+std::ostream& operator<<(std::ostream& os, const civil_day& d) {
+  std::stringstream ss;
+  ss << civil_month(d) << '-';
+  ss << std::setfill('0') << std::setw(2) << d.day();
+  return os << ss.str();
+}
+std::ostream& operator<<(std::ostream& os, const civil_hour& h) {
+  std::stringstream ss;
+  ss << civil_day(h) << 'T';
+  ss << std::setfill('0') << std::setw(2) << h.hour();
+  return os << ss.str();
+}
+std::ostream& operator<<(std::ostream& os, const civil_minute& m) {
+  std::stringstream ss;
+  ss << civil_hour(m) << ':';
+  ss << std::setfill('0') << std::setw(2) << m.minute();
+  return os << ss.str();
+}
+std::ostream& operator<<(std::ostream& os, const civil_second& s) {
+  std::stringstream ss;
+  ss << civil_minute(s) << ':';
+  ss << std::setfill('0') << std::setw(2) << s.second();
+  return os << ss.str();
+}
+
+////////////////////////////////////////////////////////////////////////
+
+std::ostream& operator<<(std::ostream& os, weekday wd) {
+  switch (wd) {
+    case weekday::monday:
+      return os << "Monday";
+    case weekday::tuesday:
+      return os << "Tuesday";
+    case weekday::wednesday:
+      return os << "Wednesday";
+    case weekday::thursday:
+      return os << "Thursday";
+    case weekday::friday:
+      return os << "Friday";
+    case weekday::saturday:
+      return os << "Saturday";
+    case weekday::sunday:
+      return os << "Sunday";
+  }
+  return os;  // Should never get here, but -Wreturn-type may warn without this.
+}
+
+}  // namespace detail
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.cc
new file mode 100644
index 0000000..303c024
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.cc	
@@ -0,0 +1,140 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "time_zone_fixed.h"
+
+#include <algorithm>
+#include <cassert>
+#include <chrono>
+#include <cstring>
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+namespace {
+
+// The prefix used for the internal names of fixed-offset zones.
+const char kFixedZonePrefix[] = "Fixed/UTC";
+
+const char kDigits[] = "0123456789";
+
+char* Format02d(char* p, int v) {
+  *p++ = kDigits[(v / 10) % 10];
+  *p++ = kDigits[v % 10];
+  return p;
+}
+
+int Parse02d(const char* p) {
+  if (const char* ap = std::strchr(kDigits, *p)) {
+    int v = static_cast<int>(ap - kDigits);
+    if (const char* bp = std::strchr(kDigits, *++p)) {
+      return (v * 10) + static_cast<int>(bp - kDigits);
+    }
+  }
+  return -1;
+}
+
+}  // namespace
+
+bool FixedOffsetFromName(const std::string& name, seconds* offset) {
+  if (name.compare(0, std::string::npos, "UTC", 3) == 0) {
+    *offset = seconds::zero();
+    return true;
+  }
+
+  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
+  const char* const ep = kFixedZonePrefix + prefix_len;
+  if (name.size() != prefix_len + 9)  // <prefix>+99:99:99
+    return false;
+  if (!std::equal(kFixedZonePrefix, ep, name.begin())) return false;
+  const char* np = name.data() + prefix_len;
+  if (np[0] != '+' && np[0] != '-') return false;
+  if (np[3] != ':' || np[6] != ':')  // see note below about large offsets
+    return false;
+
+  int hours = Parse02d(np + 1);
+  if (hours == -1) return false;
+  int mins = Parse02d(np + 4);
+  if (mins == -1) return false;
+  int secs = Parse02d(np + 7);
+  if (secs == -1) return false;
+
+  secs += ((hours * 60) + mins) * 60;
+  if (secs > 24 * 60 * 60) return false;  // outside supported offset range
+  *offset = seconds(secs * (np[0] == '-' ? -1 : 1));  // "-" means west
+  return true;
+}
+
+std::string FixedOffsetToName(const seconds& offset) {
+  if (offset == seconds::zero()) return "UTC";
+  if (offset < std::chrono::hours(-24) || offset > std::chrono::hours(24)) {
+    // We don't support fixed-offset zones more than 24 hours
+    // away from UTC to avoid complications in rendering such
+    // offsets and to (somewhat) limit the total number of zones.
+    return "UTC";
+  }
+  int offset_seconds = static_cast<int>(offset.count());
+  const char sign = (offset_seconds < 0 ? '-' : '+');
+  int offset_minutes = offset_seconds / 60;
+  offset_seconds %= 60;
+  if (sign == '-') {
+    if (offset_seconds > 0) {
+      offset_seconds -= 60;
+      offset_minutes += 1;
+    }
+    offset_seconds = -offset_seconds;
+    offset_minutes = -offset_minutes;
+  }
+  int offset_hours = offset_minutes / 60;
+  offset_minutes %= 60;
+  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
+  char buf[prefix_len + sizeof("-24:00:00")];
+  char* ep = std::copy(kFixedZonePrefix, kFixedZonePrefix + prefix_len, buf);
+  *ep++ = sign;
+  ep = Format02d(ep, offset_hours);
+  *ep++ = ':';
+  ep = Format02d(ep, offset_minutes);
+  *ep++ = ':';
+  ep = Format02d(ep, offset_seconds);
+  *ep++ = '\0';
+  assert(ep == buf + sizeof(buf));
+  return buf;
+}
+
+std::string FixedOffsetToAbbr(const seconds& offset) {
+  std::string abbr = FixedOffsetToName(offset);
+  const std::size_t prefix_len = sizeof(kFixedZonePrefix) - 1;
+  if (abbr.size() == prefix_len + 9) {         // <prefix>+99:99:99
+    abbr.erase(0, prefix_len);                 // +99:99:99
+    abbr.erase(6, 1);                          // +99:9999
+    abbr.erase(3, 1);                          // +999999
+    if (abbr[5] == '0' && abbr[6] == '0') {    // +999900
+      abbr.erase(5, 2);                        // +9999
+      if (abbr[3] == '0' && abbr[4] == '0') {  // +9900
+        abbr.erase(3, 2);                      // +99
+      }
+    }
+  }
+  return abbr;
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.h
new file mode 100644
index 0000000..e74a0bb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_fixed.h	
@@ -0,0 +1,52 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
+
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// Helper functions for dealing with the names and abbreviations
+// of time zones that are a fixed offset (seconds east) from UTC.
+// FixedOffsetFromName() extracts the offset from a valid fixed-offset
+// name, while FixedOffsetToName() and FixedOffsetToAbbr() generate
+// the canonical zone name and abbreviation respectively for the given
+// offset.
+//
+// A fixed-offset name looks like "Fixed/UTC<+-><hours>:<mins>:<secs>".
+// Its abbreviation is of the form "UTC(<+->H?H(MM(SS)?)?)?" where the
+// optional pieces are omitted when their values are zero.  (Note that
+// the sign is the opposite of that used in a POSIX TZ specification.)
+//
+// Note: FixedOffsetFromName() fails on syntax errors or when the parsed
+// offset exceeds 24 hours.  FixedOffsetToName() and FixedOffsetToAbbr()
+// both produce "UTC" when the argument offset exceeds 24 hours.
+bool FixedOffsetFromName(const std::string& name, seconds* offset);
+std::string FixedOffsetToName(const seconds& offset);
+std::string FixedOffsetToAbbr(const seconds& offset);
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_format.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_format.cc
new file mode 100644
index 0000000..950b23a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_format.cc	
@@ -0,0 +1,922 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#if !defined(HAS_STRPTIME)
+#if !defined(_MSC_VER) && !defined(__MINGW32__)
+#define HAS_STRPTIME 1  // assume everyone has strptime() except windows
+#endif
+#endif
+
+#if defined(HAS_STRPTIME) && HAS_STRPTIME
+#if !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE  // Definedness suffices for strptime.
+#endif
+#endif
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+// Include time.h directly since, by C++ standards, ctime doesn't have to
+// declare strptime.
+#include <time.h>
+
+#include <cctype>
+#include <chrono>
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+#include <ctime>
+#include <limits>
+#include <string>
+#include <vector>
+#if !HAS_STRPTIME
+#include <iomanip>
+#include <sstream>
+#endif
+
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "time_zone_if.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+namespace detail {
+
+namespace {
+
+#if !HAS_STRPTIME
+// Build a strptime() using C++11's std::get_time().
+char* strptime(const char* s, const char* fmt, std::tm* tm) {
+  std::istringstream input(s);
+  input >> std::get_time(tm, fmt);
+  if (input.fail()) return nullptr;
+  return const_cast<char*>(s) +
+         (input.eof() ? strlen(s) : static_cast<std::size_t>(input.tellg()));
+}
+#endif
+
+std::tm ToTM(const time_zone::absolute_lookup& al) {
+  std::tm tm{};
+  tm.tm_sec = al.cs.second();
+  tm.tm_min = al.cs.minute();
+  tm.tm_hour = al.cs.hour();
+  tm.tm_mday = al.cs.day();
+  tm.tm_mon = al.cs.month() - 1;
+
+  // Saturate tm.tm_year is cases of over/underflow.
+  if (al.cs.year() < std::numeric_limits<int>::min() + 1900) {
+    tm.tm_year = std::numeric_limits<int>::min();
+  } else if (al.cs.year() - 1900 > std::numeric_limits<int>::max()) {
+    tm.tm_year = std::numeric_limits<int>::max();
+  } else {
+    tm.tm_year = static_cast<int>(al.cs.year() - 1900);
+  }
+
+  switch (get_weekday(al.cs)) {
+    case weekday::sunday:
+      tm.tm_wday = 0;
+      break;
+    case weekday::monday:
+      tm.tm_wday = 1;
+      break;
+    case weekday::tuesday:
+      tm.tm_wday = 2;
+      break;
+    case weekday::wednesday:
+      tm.tm_wday = 3;
+      break;
+    case weekday::thursday:
+      tm.tm_wday = 4;
+      break;
+    case weekday::friday:
+      tm.tm_wday = 5;
+      break;
+    case weekday::saturday:
+      tm.tm_wday = 6;
+      break;
+  }
+  tm.tm_yday = get_yearday(al.cs) - 1;
+  tm.tm_isdst = al.is_dst ? 1 : 0;
+  return tm;
+}
+
+const char kDigits[] = "0123456789";
+
+// Formats a 64-bit integer in the given field width.  Note that it is up
+// to the caller of Format64() [and Format02d()/FormatOffset()] to ensure
+// that there is sufficient space before ep to hold the conversion.
+char* Format64(char* ep, int width, std::int_fast64_t v) {
+  bool neg = false;
+  if (v < 0) {
+    --width;
+    neg = true;
+    if (v == std::numeric_limits<std::int_fast64_t>::min()) {
+      // Avoid negating minimum value.
+      std::int_fast64_t last_digit = -(v % 10);
+      v /= 10;
+      if (last_digit < 0) {
+        ++v;
+        last_digit += 10;
+      }
+      --width;
+      *--ep = kDigits[last_digit];
+    }
+    v = -v;
+  }
+  do {
+    --width;
+    *--ep = kDigits[v % 10];
+  } while (v /= 10);
+  while (--width >= 0) *--ep = '0';  // zero pad
+  if (neg) *--ep = '-';
+  return ep;
+}
+
+// Formats [0 .. 99] as %02d.
+char* Format02d(char* ep, int v) {
+  *--ep = kDigits[v % 10];
+  *--ep = kDigits[(v / 10) % 10];
+  return ep;
+}
+
+// Formats a UTC offset, like +00:00.
+char* FormatOffset(char* ep, int offset, const char* mode) {
+  // TODO: Follow the RFC3339 "Unknown Local Offset Convention" and
+  // generate a "negative zero" when we're formatting a zero offset
+  // as the result of a failed load_time_zone().
+  char sign = '+';
+  if (offset < 0) {
+    offset = -offset;  // bounded by 24h so no overflow
+    sign = '-';
+  }
+  const int seconds = offset % 60;
+  const int minutes = (offset /= 60) % 60;
+  const int hours = offset /= 60;
+  const char sep = mode[0];
+  const bool ext = (sep != '\0' && mode[1] == '*');
+  const bool ccc = (ext && mode[2] == ':');
+  if (ext && (!ccc || seconds != 0)) {
+    ep = Format02d(ep, seconds);
+    *--ep = sep;
+  } else {
+    // If we're not rendering seconds, sub-minute negative offsets
+    // should get a positive sign (e.g., offset=-10s => "+00:00").
+    if (hours == 0 && minutes == 0) sign = '+';
+  }
+  if (!ccc || minutes != 0 || seconds != 0) {
+    ep = Format02d(ep, minutes);
+    if (sep != '\0') *--ep = sep;
+  }
+  ep = Format02d(ep, hours);
+  *--ep = sign;
+  return ep;
+}
+
+// Formats a std::tm using strftime(3).
+void FormatTM(std::string* out, const std::string& fmt, const std::tm& tm) {
+  // strftime(3) returns the number of characters placed in the output
+  // array (which may be 0 characters).  It also returns 0 to indicate
+  // an error, like the array wasn't large enough.  To accommodate this,
+  // the following code grows the buffer size from 2x the format std::string
+  // length up to 32x.
+  for (std::size_t i = 2; i != 32; i *= 2) {
+    std::size_t buf_size = fmt.size() * i;
+    std::vector<char> buf(buf_size);
+    if (std::size_t len = strftime(&buf[0], buf_size, fmt.c_str(), &tm)) {
+      out->append(&buf[0], len);
+      return;
+    }
+  }
+}
+
+// Used for %E#S/%E#f specifiers and for data values in parse().
+template <typename T>
+const char* ParseInt(const char* dp, int width, T min, T max, T* vp) {
+  if (dp != nullptr) {
+    const T kmin = std::numeric_limits<T>::min();
+    bool erange = false;
+    bool neg = false;
+    T value = 0;
+    if (*dp == '-') {
+      neg = true;
+      if (width <= 0 || --width != 0) {
+        ++dp;
+      } else {
+        dp = nullptr;  // width was 1
+      }
+    }
+    if (const char* const bp = dp) {
+      while (const char* cp = strchr(kDigits, *dp)) {
+        int d = static_cast<int>(cp - kDigits);
+        if (d >= 10) break;
+        if (value < kmin / 10) {
+          erange = true;
+          break;
+        }
+        value *= 10;
+        if (value < kmin + d) {
+          erange = true;
+          break;
+        }
+        value -= d;
+        dp += 1;
+        if (width > 0 && --width == 0) break;
+      }
+      if (dp != bp && !erange && (neg || value != kmin)) {
+        if (!neg || value != 0) {
+          if (!neg) value = -value;  // make positive
+          if (min <= value && value <= max) {
+            *vp = value;
+          } else {
+            dp = nullptr;
+          }
+        } else {
+          dp = nullptr;
+        }
+      } else {
+        dp = nullptr;
+      }
+    }
+  }
+  return dp;
+}
+
+// The number of base-10 digits that can be represented by a signed 64-bit
+// integer.  That is, 10^kDigits10_64 <= 2^63 - 1 < 10^(kDigits10_64 + 1).
+const int kDigits10_64 = 18;
+
+// 10^n for everything that can be represented by a signed 64-bit integer.
+const std::int_fast64_t kExp10[kDigits10_64 + 1] = {
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000,
+    1000000000,
+    10000000000,
+    100000000000,
+    1000000000000,
+    10000000000000,
+    100000000000000,
+    1000000000000000,
+    10000000000000000,
+    100000000000000000,
+    1000000000000000000,
+};
+
+}  // namespace
+
+// Uses strftime(3) to format the given Time.  The following extended format
+// specifiers are also supported:
+//
+//   - %Ez  - RFC3339-compatible numeric UTC offset (+hh:mm or -hh:mm)
+//   - %E*z - Full-resolution numeric UTC offset (+hh:mm:ss or -hh:mm:ss)
+//   - %E#S - Seconds with # digits of fractional precision
+//   - %E*S - Seconds with full fractional precision (a literal '*')
+//   - %E4Y - Four-character years (-999 ... -001, 0000, 0001 ... 9999)
+//
+// The standard specifiers from RFC3339_* (%Y, %m, %d, %H, %M, and %S) are
+// handled internally for performance reasons.  strftime(3) is slow due to
+// a POSIX requirement to respect changes to ${TZ}.
+//
+// The TZ/GNU %s extension is handled internally because strftime() has
+// to use mktime() to generate it, and that assumes the local time zone.
+//
+// We also handle the %z and %Z specifiers to accommodate platforms that do
+// not support the tm_gmtoff and tm_zone extensions to std::tm.
+//
+// Requires that zero() <= fs < seconds(1).
+std::string format(const std::string& format, const time_point<seconds>& tp,
+                   const detail::femtoseconds& fs, const time_zone& tz) {
+  std::string result;
+  result.reserve(format.size());  // A reasonable guess for the result size.
+  const time_zone::absolute_lookup al = tz.lookup(tp);
+  const std::tm tm = ToTM(al);
+
+  // Scratch buffer for internal conversions.
+  char buf[3 + kDigits10_64];  // enough for longest conversion
+  char* const ep = buf + sizeof(buf);
+  char* bp;  // works back from ep
+
+  // Maintain three, disjoint subsequences that span format.
+  //   [format.begin() ... pending) : already formatted into result
+  //   [pending ... cur) : formatting pending, but no special cases
+  //   [cur ... format.end()) : unexamined
+  // Initially, everything is in the unexamined part.
+  const char* pending = format.c_str();  // NUL terminated
+  const char* cur = pending;
+  const char* end = pending + format.length();
+
+  while (cur != end) {  // while something is unexamined
+    // Moves cur to the next percent sign.
+    const char* start = cur;
+    while (cur != end && *cur != '%') ++cur;
+
+    // If the new pending text is all ordinary, copy it out.
+    if (cur != start && pending == start) {
+      result.append(pending, static_cast<std::size_t>(cur - pending));
+      pending = start = cur;
+    }
+
+    // Span the sequential percent signs.
+    const char* percent = cur;
+    while (cur != end && *cur == '%') ++cur;
+
+    // If the new pending text is all percents, copy out one
+    // percent for every matched pair, then skip those pairs.
+    if (cur != start && pending == start) {
+      std::size_t escaped = static_cast<std::size_t>(cur - pending) / 2;
+      result.append(pending, escaped);
+      pending += escaped * 2;
+      // Also copy out a single trailing percent.
+      if (pending != cur && cur == end) {
+        result.push_back(*pending++);
+      }
+    }
+
+    // Loop unless we have an unescaped percent.
+    if (cur == end || (cur - percent) % 2 == 0) continue;
+
+    // Simple specifiers that we handle ourselves.
+    if (strchr("YmdeHMSzZs%", *cur)) {
+      if (cur - 1 != pending) {
+        FormatTM(&result, std::string(pending, cur - 1), tm);
+      }
+      switch (*cur) {
+        case 'Y':
+          // This avoids the tm.tm_year overflow problem for %Y, however
+          // tm.tm_year will still be used by other specifiers like %D.
+          bp = Format64(ep, 0, al.cs.year());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'm':
+          bp = Format02d(ep, al.cs.month());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'd':
+        case 'e':
+          bp = Format02d(ep, al.cs.day());
+          if (*cur == 'e' && *bp == '0') *bp = ' ';  // for Windows
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'H':
+          bp = Format02d(ep, al.cs.hour());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'M':
+          bp = Format02d(ep, al.cs.minute());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'S':
+          bp = Format02d(ep, al.cs.second());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'z':
+          bp = FormatOffset(ep, al.offset, "");
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case 'Z':
+          result.append(al.abbr);
+          break;
+        case 's':
+          bp = Format64(ep, 0, ToUnixSeconds(tp));
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          break;
+        case '%':
+          result.push_back('%');
+          break;
+      }
+      pending = ++cur;
+      continue;
+    }
+
+    // More complex specifiers that we handle ourselves.
+    if (*cur == ':' && cur + 1 != end) {
+      if (*(cur + 1) == 'z') {
+        // Formats %:z.
+        if (cur - 1 != pending) {
+          FormatTM(&result, std::string(pending, cur - 1), tm);
+        }
+        bp = FormatOffset(ep, al.offset, ":");
+        result.append(bp, static_cast<std::size_t>(ep - bp));
+        pending = cur += 2;
+        continue;
+      }
+      if (*(cur + 1) == ':' && cur + 2 != end) {
+        if (*(cur + 2) == 'z') {
+          // Formats %::z.
+          if (cur - 1 != pending) {
+            FormatTM(&result, std::string(pending, cur - 1), tm);
+          }
+          bp = FormatOffset(ep, al.offset, ":*");
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          pending = cur += 3;
+          continue;
+        }
+        if (*(cur + 2) == ':' && cur + 3 != end) {
+          if (*(cur + 3) == 'z') {
+            // Formats %:::z.
+            if (cur - 1 != pending) {
+              FormatTM(&result, std::string(pending, cur - 1), tm);
+            }
+            bp = FormatOffset(ep, al.offset, ":*:");
+            result.append(bp, static_cast<std::size_t>(ep - bp));
+            pending = cur += 4;
+            continue;
+          }
+        }
+      }
+    }
+
+    // Loop if there is no E modifier.
+    if (*cur != 'E' || ++cur == end) continue;
+
+    // Format our extensions.
+    if (*cur == 'z') {
+      // Formats %Ez.
+      if (cur - 2 != pending) {
+        FormatTM(&result, std::string(pending, cur - 2), tm);
+      }
+      bp = FormatOffset(ep, al.offset, ":");
+      result.append(bp, static_cast<std::size_t>(ep - bp));
+      pending = ++cur;
+    } else if (*cur == '*' && cur + 1 != end && *(cur + 1) == 'z') {
+      // Formats %E*z.
+      if (cur - 2 != pending) {
+        FormatTM(&result, std::string(pending, cur - 2), tm);
+      }
+      bp = FormatOffset(ep, al.offset, ":*");
+      result.append(bp, static_cast<std::size_t>(ep - bp));
+      pending = cur += 2;
+    } else if (*cur == '*' && cur + 1 != end &&
+               (*(cur + 1) == 'S' || *(cur + 1) == 'f')) {
+      // Formats %E*S or %E*F.
+      if (cur - 2 != pending) {
+        FormatTM(&result, std::string(pending, cur - 2), tm);
+      }
+      char* cp = ep;
+      bp = Format64(cp, 15, fs.count());
+      while (cp != bp && cp[-1] == '0') --cp;
+      switch (*(cur + 1)) {
+        case 'S':
+          if (cp != bp) *--bp = '.';
+          bp = Format02d(bp, al.cs.second());
+          break;
+        case 'f':
+          if (cp == bp) *--bp = '0';
+          break;
+      }
+      result.append(bp, static_cast<std::size_t>(cp - bp));
+      pending = cur += 2;
+    } else if (*cur == '4' && cur + 1 != end && *(cur + 1) == 'Y') {
+      // Formats %E4Y.
+      if (cur - 2 != pending) {
+        FormatTM(&result, std::string(pending, cur - 2), tm);
+      }
+      bp = Format64(ep, 4, al.cs.year());
+      result.append(bp, static_cast<std::size_t>(ep - bp));
+      pending = cur += 2;
+    } else if (std::isdigit(*cur)) {
+      // Possibly found %E#S or %E#f.
+      int n = 0;
+      if (const char* np = ParseInt(cur, 0, 0, 1024, &n)) {
+        if (*np == 'S' || *np == 'f') {
+          // Formats %E#S or %E#f.
+          if (cur - 2 != pending) {
+            FormatTM(&result, std::string(pending, cur - 2), tm);
+          }
+          bp = ep;
+          if (n > 0) {
+            if (n > kDigits10_64) n = kDigits10_64;
+            bp = Format64(bp, n,
+                          (n > 15) ? fs.count() * kExp10[n - 15]
+                                   : fs.count() / kExp10[15 - n]);
+            if (*np == 'S') *--bp = '.';
+          }
+          if (*np == 'S') bp = Format02d(bp, al.cs.second());
+          result.append(bp, static_cast<std::size_t>(ep - bp));
+          pending = cur = ++np;
+        }
+      }
+    }
+  }
+
+  // Formats any remaining data.
+  if (end != pending) {
+    FormatTM(&result, std::string(pending, end), tm);
+  }
+
+  return result;
+}
+
+namespace {
+
+const char* ParseOffset(const char* dp, const char* mode, int* offset) {
+  if (dp != nullptr) {
+    const char first = *dp++;
+    if (first == '+' || first == '-') {
+      char sep = mode[0];
+      int hours = 0;
+      int minutes = 0;
+      int seconds = 0;
+      const char* ap = ParseInt(dp, 2, 0, 23, &hours);
+      if (ap != nullptr && ap - dp == 2) {
+        dp = ap;
+        if (sep != '\0' && *ap == sep) ++ap;
+        const char* bp = ParseInt(ap, 2, 0, 59, &minutes);
+        if (bp != nullptr && bp - ap == 2) {
+          dp = bp;
+          if (sep != '\0' && *bp == sep) ++bp;
+          const char* cp = ParseInt(bp, 2, 0, 59, &seconds);
+          if (cp != nullptr && cp - bp == 2) dp = cp;
+        }
+        *offset = ((hours * 60 + minutes) * 60) + seconds;
+        if (first == '-') *offset = -*offset;
+      } else {
+        dp = nullptr;
+      }
+    } else if (first == 'Z') {  // Zulu
+      *offset = 0;
+    } else {
+      dp = nullptr;
+    }
+  }
+  return dp;
+}
+
+const char* ParseZone(const char* dp, std::string* zone) {
+  zone->clear();
+  if (dp != nullptr) {
+    while (*dp != '\0' && !std::isspace(*dp)) zone->push_back(*dp++);
+    if (zone->empty()) dp = nullptr;
+  }
+  return dp;
+}
+
+const char* ParseSubSeconds(const char* dp, detail::femtoseconds* subseconds) {
+  if (dp != nullptr) {
+    std::int_fast64_t v = 0;
+    std::int_fast64_t exp = 0;
+    const char* const bp = dp;
+    while (const char* cp = strchr(kDigits, *dp)) {
+      int d = static_cast<int>(cp - kDigits);
+      if (d >= 10) break;
+      if (exp < 15) {
+        exp += 1;
+        v *= 10;
+        v += d;
+      }
+      ++dp;
+    }
+    if (dp != bp) {
+      v *= kExp10[15 - exp];
+      *subseconds = detail::femtoseconds(v);
+    } else {
+      dp = nullptr;
+    }
+  }
+  return dp;
+}
+
+// Parses a string into a std::tm using strptime(3).
+const char* ParseTM(const char* dp, const char* fmt, std::tm* tm) {
+  if (dp != nullptr) {
+    dp = strptime(dp, fmt, tm);
+  }
+  return dp;
+}
+
+}  // namespace
+
+// Uses strptime(3) to parse the given input.  Supports the same extended
+// format specifiers as format(), although %E#S and %E*S are treated
+// identically (and similarly for %E#f and %E*f).  %Ez and %E*z also accept
+// the same inputs.
+//
+// The standard specifiers from RFC3339_* (%Y, %m, %d, %H, %M, and %S) are
+// handled internally so that we can normally avoid strptime() altogether
+// (which is particularly helpful when the native implementation is broken).
+//
+// The TZ/GNU %s extension is handled internally because strptime() has to
+// use localtime_r() to generate it, and that assumes the local time zone.
+//
+// We also handle the %z specifier to accommodate platforms that do not
+// support the tm_gmtoff extension to std::tm.  %Z is parsed but ignored.
+bool parse(const std::string& format, const std::string& input,
+           const time_zone& tz, time_point<seconds>* sec,
+           detail::femtoseconds* fs, std::string* err) {
+  // The unparsed input.
+  const char* data = input.c_str();  // NUL terminated
+
+  // Skips leading whitespace.
+  while (std::isspace(*data)) ++data;
+
+  const year_t kyearmax = std::numeric_limits<year_t>::max();
+  const year_t kyearmin = std::numeric_limits<year_t>::min();
+
+  // Sets default values for unspecified fields.
+  bool saw_year = false;
+  year_t year = 1970;
+  std::tm tm{};
+  tm.tm_year = 1970 - 1900;
+  tm.tm_mon = 1 - 1;  // Jan
+  tm.tm_mday = 1;
+  tm.tm_hour = 0;
+  tm.tm_min = 0;
+  tm.tm_sec = 0;
+  tm.tm_wday = 4;  // Thu
+  tm.tm_yday = 0;
+  tm.tm_isdst = 0;
+  auto subseconds = detail::femtoseconds::zero();
+  bool saw_offset = false;
+  int offset = 0;  // No offset from passed tz.
+  std::string zone = "UTC";
+
+  const char* fmt = format.c_str();  // NUL terminated
+  bool twelve_hour = false;
+  bool afternoon = false;
+
+  bool saw_percent_s = false;
+  std::int_fast64_t percent_s = 0;
+
+  // Steps through format, one specifier at a time.
+  while (data != nullptr && *fmt != '\0') {
+    if (std::isspace(*fmt)) {
+      while (std::isspace(*data)) ++data;
+      while (std::isspace(*++fmt)) continue;
+      continue;
+    }
+
+    if (*fmt != '%') {
+      if (*data == *fmt) {
+        ++data;
+        ++fmt;
+      } else {
+        data = nullptr;
+      }
+      continue;
+    }
+
+    const char* percent = fmt;
+    if (*++fmt == '\0') {
+      data = nullptr;
+      continue;
+    }
+    switch (*fmt++) {
+      case 'Y':
+        // Symmetrically with FormatTime(), directly handing %Y avoids the
+        // tm.tm_year overflow problem.  However, tm.tm_year will still be
+        // used by other specifiers like %D.
+        data = ParseInt(data, 0, kyearmin, kyearmax, &year);
+        if (data != nullptr) saw_year = true;
+        continue;
+      case 'm':
+        data = ParseInt(data, 2, 1, 12, &tm.tm_mon);
+        if (data != nullptr) tm.tm_mon -= 1;
+        continue;
+      case 'd':
+      case 'e':
+        data = ParseInt(data, 2, 1, 31, &tm.tm_mday);
+        continue;
+      case 'H':
+        data = ParseInt(data, 2, 0, 23, &tm.tm_hour);
+        twelve_hour = false;
+        continue;
+      case 'M':
+        data = ParseInt(data, 2, 0, 59, &tm.tm_min);
+        continue;
+      case 'S':
+        data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
+        continue;
+      case 'I':
+      case 'l':
+      case 'r':  // probably uses %I
+        twelve_hour = true;
+        break;
+      case 'R':  // uses %H
+      case 'T':  // uses %H
+      case 'c':  // probably uses %H
+      case 'X':  // probably uses %H
+        twelve_hour = false;
+        break;
+      case 'z':
+        data = ParseOffset(data, "", &offset);
+        if (data != nullptr) saw_offset = true;
+        continue;
+      case 'Z':  // ignored; zone abbreviations are ambiguous
+        data = ParseZone(data, &zone);
+        continue;
+      case 's':
+        data =
+            ParseInt(data, 0, std::numeric_limits<std::int_fast64_t>::min(),
+                     std::numeric_limits<std::int_fast64_t>::max(), &percent_s);
+        if (data != nullptr) saw_percent_s = true;
+        continue;
+      case ':':
+        if (fmt[0] == 'z' ||
+            (fmt[0] == ':' &&
+             (fmt[1] == 'z' || (fmt[1] == ':' && fmt[2] == 'z')))) {
+          data = ParseOffset(data, ":", &offset);
+          if (data != nullptr) saw_offset = true;
+          fmt += (fmt[0] == 'z') ? 1 : (fmt[1] == 'z') ? 2 : 3;
+          continue;
+        }
+        break;
+      case '%':
+        data = (*data == '%' ? data + 1 : nullptr);
+        continue;
+      case 'E':
+        if (fmt[0] == 'z' || (fmt[0] == '*' && fmt[1] == 'z')) {
+          data = ParseOffset(data, ":", &offset);
+          if (data != nullptr) saw_offset = true;
+          fmt += (fmt[0] == 'z') ? 1 : 2;
+          continue;
+        }
+        if (fmt[0] == '*' && fmt[1] == 'S') {
+          data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
+          if (data != nullptr && *data == '.') {
+            data = ParseSubSeconds(data + 1, &subseconds);
+          }
+          fmt += 2;
+          continue;
+        }
+        if (fmt[0] == '*' && fmt[1] == 'f') {
+          if (data != nullptr && std::isdigit(*data)) {
+            data = ParseSubSeconds(data, &subseconds);
+          }
+          fmt += 2;
+          continue;
+        }
+        if (fmt[0] == '4' && fmt[1] == 'Y') {
+          const char* bp = data;
+          data = ParseInt(data, 4, year_t{-999}, year_t{9999}, &year);
+          if (data != nullptr) {
+            if (data - bp == 4) {
+              saw_year = true;
+            } else {
+              data = nullptr;  // stopped too soon
+            }
+          }
+          fmt += 2;
+          continue;
+        }
+        if (std::isdigit(*fmt)) {
+          int n = 0;  // value ignored
+          if (const char* np = ParseInt(fmt, 0, 0, 1024, &n)) {
+            if (*np == 'S') {
+              data = ParseInt(data, 2, 0, 60, &tm.tm_sec);
+              if (data != nullptr && *data == '.') {
+                data = ParseSubSeconds(data + 1, &subseconds);
+              }
+              fmt = ++np;
+              continue;
+            }
+            if (*np == 'f') {
+              if (data != nullptr && std::isdigit(*data)) {
+                data = ParseSubSeconds(data, &subseconds);
+              }
+              fmt = ++np;
+              continue;
+            }
+          }
+        }
+        if (*fmt == 'c') twelve_hour = false;  // probably uses %H
+        if (*fmt == 'X') twelve_hour = false;  // probably uses %H
+        if (*fmt != '\0') ++fmt;
+        break;
+      case 'O':
+        if (*fmt == 'H') twelve_hour = false;
+        if (*fmt == 'I') twelve_hour = true;
+        if (*fmt != '\0') ++fmt;
+        break;
+    }
+
+    // Parses the current specifier.
+    const char* orig_data = data;
+    std::string spec(percent, static_cast<std::size_t>(fmt - percent));
+    data = ParseTM(data, spec.c_str(), &tm);
+
+    // If we successfully parsed %p we need to remember whether the result
+    // was AM or PM so that we can adjust tm_hour before time_zone::lookup().
+    // So reparse the input with a known AM hour, and check if it is shifted
+    // to a PM hour.
+    if (spec == "%p" && data != nullptr) {
+      std::string test_input = "1";
+      test_input.append(orig_data, static_cast<std::size_t>(data - orig_data));
+      const char* test_data = test_input.c_str();
+      std::tm tmp{};
+      ParseTM(test_data, "%I%p", &tmp);
+      afternoon = (tmp.tm_hour == 13);
+    }
+  }
+
+  // Adjust a 12-hour tm_hour value if it should be in the afternoon.
+  if (twelve_hour && afternoon && tm.tm_hour < 12) {
+    tm.tm_hour += 12;
+  }
+
+  if (data == nullptr) {
+    if (err != nullptr) *err = "Failed to parse input";
+    return false;
+  }
+
+  // Skip any remaining whitespace.
+  while (std::isspace(*data)) ++data;
+
+  // parse() must consume the entire input std::string.
+  if (*data != '\0') {
+    if (err != nullptr) *err = "Illegal trailing data in input string";
+    return false;
+  }
+
+  // If we saw %s then we ignore anything else and return that time.
+  if (saw_percent_s) {
+    *sec = FromUnixSeconds(percent_s);
+    *fs = detail::femtoseconds::zero();
+    return true;
+  }
+
+  // If we saw %z, %Ez, or %E*z then we want to interpret the parsed fields
+  // in UTC and then shift by that offset.  Otherwise we want to interpret
+  // the fields directly in the passed time_zone.
+  time_zone ptz = saw_offset ? utc_time_zone() : tz;
+
+  // Allows a leap second of 60 to normalize forward to the following ":00".
+  if (tm.tm_sec == 60) {
+    tm.tm_sec -= 1;
+    offset -= 1;
+    subseconds = detail::femtoseconds::zero();
+  }
+
+  if (!saw_year) {
+    year = year_t{tm.tm_year};
+    if (year > kyearmax - 1900) {
+      // Platform-dependent, maybe unreachable.
+      if (err != nullptr) *err = "Out-of-range year";
+      return false;
+    }
+    year += 1900;
+  }
+
+  const int month = tm.tm_mon + 1;
+  civil_second cs(year, month, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+  // parse() should not allow normalization. Due to the restricted field
+  // ranges above (see ParseInt()), the only possibility is for days to roll
+  // into months. That is, parsing "Sep 31" should not produce "Oct 1".
+  if (cs.month() != month || cs.day() != tm.tm_mday) {
+    if (err != nullptr) *err = "Out-of-range field";
+    return false;
+  }
+
+  // Accounts for the offset adjustment before converting to absolute time.
+  if ((offset < 0 && cs > civil_second::max() + offset) ||
+      (offset > 0 && cs < civil_second::min() + offset)) {
+    if (err != nullptr) *err = "Out-of-range field";
+    return false;
+  }
+  cs -= offset;
+
+  const auto tp = ptz.lookup(cs).pre;
+  // Checks for overflow/underflow and returns an error as necessary.
+  if (tp == time_point<seconds>::max()) {
+    const auto al = ptz.lookup(time_point<seconds>::max());
+    if (cs > al.cs) {
+      if (err != nullptr) *err = "Out-of-range field";
+      return false;
+    }
+  }
+  if (tp == time_point<seconds>::min()) {
+    const auto al = ptz.lookup(time_point<seconds>::min());
+    if (cs < al.cs) {
+      if (err != nullptr) *err = "Out-of-range field";
+      return false;
+    }
+  }
+
+  *sec = tp;
+  *fs = subseconds;
+  return true;
+}
+
+}  // namespace detail
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.cc
new file mode 100644
index 0000000..0319b2f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.cc	
@@ -0,0 +1,45 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "time_zone_if.h"
+
+#include "absl/base/config.h"
+#include "time_zone_info.h"
+#include "time_zone_libc.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+std::unique_ptr<TimeZoneIf> TimeZoneIf::Load(const std::string& name) {
+  // Support "libc:localtime" and "libc:*" to access the legacy
+  // localtime and UTC support respectively from the C library.
+  if (name.compare(0, 5, "libc:") == 0) {
+    return std::unique_ptr<TimeZoneIf>(new TimeZoneLibC(name.substr(5)));
+  }
+
+  // Otherwise use the "zoneinfo" implementation by default.
+  std::unique_ptr<TimeZoneInfo> tz(new TimeZoneInfo);
+  if (!tz->Load(name)) tz.reset();
+  return std::unique_ptr<TimeZoneIf>(tz.release());
+}
+
+// Defined out-of-line to avoid emitting a weak vtable in all TUs.
+TimeZoneIf::~TimeZoneIf() {}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.h
new file mode 100644
index 0000000..32c0891
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_if.h	
@@ -0,0 +1,76 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
+
+#include <chrono>
+#include <cstdint>
+#include <memory>
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// A simple interface used to hide time-zone complexities from time_zone::Impl.
+// Subclasses implement the functions for civil-time conversions in the zone.
+class TimeZoneIf {
+ public:
+  // A factory function for TimeZoneIf implementations.
+  static std::unique_ptr<TimeZoneIf> Load(const std::string& name);
+
+  virtual ~TimeZoneIf();
+
+  virtual time_zone::absolute_lookup BreakTime(
+      const time_point<seconds>& tp) const = 0;
+  virtual time_zone::civil_lookup MakeTime(const civil_second& cs) const = 0;
+
+  virtual bool NextTransition(const time_point<seconds>& tp,
+                              time_zone::civil_transition* trans) const = 0;
+  virtual bool PrevTransition(const time_point<seconds>& tp,
+                              time_zone::civil_transition* trans) const = 0;
+
+  virtual std::string Version() const = 0;
+  virtual std::string Description() const = 0;
+
+ protected:
+  TimeZoneIf() {}
+};
+
+// Convert between time_point<seconds> and a count of seconds since the
+// Unix epoch.  We assume that the std::chrono::system_clock and the
+// Unix clock are second aligned, but not that they share an epoch.
+inline std::int_fast64_t ToUnixSeconds(const time_point<seconds>& tp) {
+  return (tp - std::chrono::time_point_cast<seconds>(
+                   std::chrono::system_clock::from_time_t(0)))
+      .count();
+}
+inline time_point<seconds> FromUnixSeconds(std::int_fast64_t t) {
+  return std::chrono::time_point_cast<seconds>(
+             std::chrono::system_clock::from_time_t(0)) +
+         seconds(t);
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.cc
new file mode 100644
index 0000000..030ae0e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.cc	
@@ -0,0 +1,121 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "time_zone_impl.h"
+
+#include <deque>
+#include <mutex>
+#include <string>
+#include <unordered_map>
+#include <utility>
+
+#include "absl/base/config.h"
+#include "time_zone_fixed.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+namespace {
+
+// time_zone::Impls are linked into a map to support fast lookup by name.
+using TimeZoneImplByName =
+    std::unordered_map<std::string, const time_zone::Impl*>;
+TimeZoneImplByName* time_zone_map = nullptr;
+
+// Mutual exclusion for time_zone_map.
+std::mutex& TimeZoneMutex() {
+  // This mutex is intentionally "leaked" to avoid the static deinitialization
+  // order fiasco (std::mutex's destructor is not trivial on many platforms).
+  static std::mutex* time_zone_mutex = new std::mutex;
+  return *time_zone_mutex;
+}
+
+}  // namespace
+
+time_zone time_zone::Impl::UTC() { return time_zone(UTCImpl()); }
+
+bool time_zone::Impl::LoadTimeZone(const std::string& name, time_zone* tz) {
+  const time_zone::Impl* const utc_impl = UTCImpl();
+
+  // First check for UTC (which is never a key in time_zone_map).
+  auto offset = seconds::zero();
+  if (FixedOffsetFromName(name, &offset) && offset == seconds::zero()) {
+    *tz = time_zone(utc_impl);
+    return true;
+  }
+
+  // Then check, under a shared lock, whether the time zone has already
+  // been loaded. This is the common path. TODO: Move to shared_mutex.
+  {
+    std::lock_guard<std::mutex> lock(TimeZoneMutex());
+    if (time_zone_map != nullptr) {
+      TimeZoneImplByName::const_iterator itr = time_zone_map->find(name);
+      if (itr != time_zone_map->end()) {
+        *tz = time_zone(itr->second);
+        return itr->second != utc_impl;
+      }
+    }
+  }
+
+  // Now check again, under an exclusive lock.
+  std::lock_guard<std::mutex> lock(TimeZoneMutex());
+  if (time_zone_map == nullptr) time_zone_map = new TimeZoneImplByName;
+  const Impl*& impl = (*time_zone_map)[name];
+  if (impl == nullptr) {
+    // The first thread in loads the new time zone.
+    Impl* new_impl = new Impl(name);
+    new_impl->zone_ = TimeZoneIf::Load(new_impl->name_);
+    if (new_impl->zone_ == nullptr) {
+      delete new_impl;  // free the nascent Impl
+      impl = utc_impl;  // and fallback to UTC
+    } else {
+      impl = new_impl;  // install new time zone
+    }
+  }
+  *tz = time_zone(impl);
+  return impl != utc_impl;
+}
+
+void time_zone::Impl::ClearTimeZoneMapTestOnly() {
+  std::lock_guard<std::mutex> lock(TimeZoneMutex());
+  if (time_zone_map != nullptr) {
+    // Existing time_zone::Impl* entries are in the wild, so we can't delete
+    // them. Instead, we move them to a private container, where they are
+    // logically unreachable but not "leaked".  Future requests will result
+    // in reloading the data.
+    static auto* cleared = new std::deque<const time_zone::Impl*>;
+    for (const auto& element : *time_zone_map) {
+      cleared->push_back(element.second);
+    }
+    time_zone_map->clear();
+  }
+}
+
+time_zone::Impl::Impl(const std::string& name) : name_(name) {}
+
+const time_zone::Impl* time_zone::Impl::UTCImpl() {
+  static Impl* utc_impl = [] {
+    Impl* impl = new Impl("UTC");
+    impl->zone_ = TimeZoneIf::Load(impl->name_);  // never fails
+    return impl;
+  }();
+  return utc_impl;
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.h
new file mode 100644
index 0000000..69806c1
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_impl.h	
@@ -0,0 +1,93 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+#include "time_zone_if.h"
+#include "time_zone_info.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// time_zone::Impl is the internal object referenced by a cctz::time_zone.
+class time_zone::Impl {
+ public:
+  // The UTC time zone. Also used for other time zones that fail to load.
+  static time_zone UTC();
+
+  // Load a named time zone. Returns false if the name is invalid, or if
+  // some other kind of error occurs. Note that loading "UTC" never fails.
+  static bool LoadTimeZone(const std::string& name, time_zone* tz);
+
+  // Clears the map of cached time zones.  Primarily for use in benchmarks
+  // that gauge the performance of loading/parsing the time-zone data.
+  static void ClearTimeZoneMapTestOnly();
+
+  // The primary key is the time-zone ID (e.g., "America/New_York").
+  const std::string& Name() const {
+    // TODO: It would nice if the zoneinfo data included the zone name.
+    return name_;
+  }
+
+  // Breaks a time_point down to civil-time components in this time zone.
+  time_zone::absolute_lookup BreakTime(const time_point<seconds>& tp) const {
+    return zone_->BreakTime(tp);
+  }
+
+  // Converts the civil-time components in this time zone into a time_point.
+  // That is, the opposite of BreakTime(). The requested civil time may be
+  // ambiguous or illegal due to a change of UTC offset.
+  time_zone::civil_lookup MakeTime(const civil_second& cs) const {
+    return zone_->MakeTime(cs);
+  }
+
+  // Finds the time of the next/previous offset change in this time zone.
+  bool NextTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const {
+    return zone_->NextTransition(tp, trans);
+  }
+  bool PrevTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const {
+    return zone_->PrevTransition(tp, trans);
+  }
+
+  // Returns an implementation-defined version std::string for this time zone.
+  std::string Version() const { return zone_->Version(); }
+
+  // Returns an implementation-defined description of this time zone.
+  std::string Description() const { return zone_->Description(); }
+
+ private:
+  explicit Impl(const std::string& name);
+  static const Impl* UTCImpl();
+
+  const std::string name_;
+  std::unique_ptr<TimeZoneIf> zone_;
+};
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.cc
new file mode 100644
index 0000000..f1697cd
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.cc	
@@ -0,0 +1,958 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+// This file implements the TimeZoneIf interface using the "zoneinfo"
+// data provided by the IANA Time Zone Database (i.e., the only real game
+// in town).
+//
+// TimeZoneInfo represents the history of UTC-offset changes within a time
+// zone. Most changes are due to daylight-saving rules, but occasionally
+// shifts are made to the time-zone's base offset. The database only attempts
+// to be definitive for times since 1970, so be wary of local-time conversions
+// before that. Also, rule and zone-boundary changes are made at the whim
+// of governments, so the conversion of future times needs to be taken with
+// a grain of salt.
+//
+// For more information see tzfile(5), http://www.iana.org/time-zones, or
+// https://en.wikipedia.org/wiki/Zoneinfo.
+//
+// Note that we assume the proleptic Gregorian calendar and 60-second
+// minutes throughout.
+
+#include "time_zone_info.h"
+
+#include <algorithm>
+#include <cassert>
+#include <chrono>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <functional>
+#include <iostream>
+#include <memory>
+#include <sstream>
+#include <string>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "time_zone_fixed.h"
+#include "time_zone_posix.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+namespace {
+
+inline bool IsLeap(year_t year) {
+  return (year % 4) == 0 && ((year % 100) != 0 || (year % 400) == 0);
+}
+
+// The number of days in non-leap and leap years respectively.
+const std::int_least32_t kDaysPerYear[2] = {365, 366};
+
+// The day offsets of the beginning of each (1-based) month in non-leap and
+// leap years respectively (e.g., 335 days before December in a leap year).
+const std::int_least16_t kMonthOffsets[2][1 + 12 + 1] = {
+    {-1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
+    {-1, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
+};
+
+// We reject leap-second encoded zoneinfo and so assume 60-second minutes.
+const std::int_least32_t kSecsPerDay = 24 * 60 * 60;
+
+// 400-year chunks always have 146097 days (20871 weeks).
+const std::int_least64_t kSecsPer400Years = 146097LL * kSecsPerDay;
+
+// Like kDaysPerYear[] but scaled up by a factor of kSecsPerDay.
+const std::int_least32_t kSecsPerYear[2] = {
+    365 * kSecsPerDay,
+    366 * kSecsPerDay,
+};
+
+// Single-byte, unsigned numeric values are encoded directly.
+inline std::uint_fast8_t Decode8(const char* cp) {
+  return static_cast<std::uint_fast8_t>(*cp) & 0xff;
+}
+
+// Multi-byte, numeric values are encoded using a MSB first,
+// twos-complement representation. These helpers decode, from
+// the given address, 4-byte and 8-byte values respectively.
+// Note: If int_fastXX_t == intXX_t and this machine is not
+// twos complement, then there will be at least one input value
+// we cannot represent.
+std::int_fast32_t Decode32(const char* cp) {
+  std::uint_fast32_t v = 0;
+  for (int i = 0; i != (32 / 8); ++i) v = (v << 8) | Decode8(cp++);
+  const std::int_fast32_t s32max = 0x7fffffff;
+  const auto s32maxU = static_cast<std::uint_fast32_t>(s32max);
+  if (v <= s32maxU) return static_cast<std::int_fast32_t>(v);
+  return static_cast<std::int_fast32_t>(v - s32maxU - 1) - s32max - 1;
+}
+
+std::int_fast64_t Decode64(const char* cp) {
+  std::uint_fast64_t v = 0;
+  for (int i = 0; i != (64 / 8); ++i) v = (v << 8) | Decode8(cp++);
+  const std::int_fast64_t s64max = 0x7fffffffffffffff;
+  const auto s64maxU = static_cast<std::uint_fast64_t>(s64max);
+  if (v <= s64maxU) return static_cast<std::int_fast64_t>(v);
+  return static_cast<std::int_fast64_t>(v - s64maxU - 1) - s64max - 1;
+}
+
+// Generate a year-relative offset for a PosixTransition.
+std::int_fast64_t TransOffset(bool leap_year, int jan1_weekday,
+                              const PosixTransition& pt) {
+  std::int_fast64_t days = 0;
+  switch (pt.date.fmt) {
+    case PosixTransition::J: {
+      days = pt.date.j.day;
+      if (!leap_year || days < kMonthOffsets[1][3]) days -= 1;
+      break;
+    }
+    case PosixTransition::N: {
+      days = pt.date.n.day;
+      break;
+    }
+    case PosixTransition::M: {
+      const bool last_week = (pt.date.m.week == 5);
+      days = kMonthOffsets[leap_year][pt.date.m.month + last_week];
+      const std::int_fast64_t weekday = (jan1_weekday + days) % 7;
+      if (last_week) {
+        days -= (weekday + 7 - 1 - pt.date.m.weekday) % 7 + 1;
+      } else {
+        days += (pt.date.m.weekday + 7 - weekday) % 7;
+        days += (pt.date.m.week - 1) * 7;
+      }
+      break;
+    }
+  }
+  return (days * kSecsPerDay) + pt.time.offset;
+}
+
+inline time_zone::civil_lookup MakeUnique(const time_point<seconds>& tp) {
+  time_zone::civil_lookup cl;
+  cl.kind = time_zone::civil_lookup::UNIQUE;
+  cl.pre = cl.trans = cl.post = tp;
+  return cl;
+}
+
+inline time_zone::civil_lookup MakeUnique(std::int_fast64_t unix_time) {
+  return MakeUnique(FromUnixSeconds(unix_time));
+}
+
+inline time_zone::civil_lookup MakeSkipped(const Transition& tr,
+                                           const civil_second& cs) {
+  time_zone::civil_lookup cl;
+  cl.kind = time_zone::civil_lookup::SKIPPED;
+  cl.pre = FromUnixSeconds(tr.unix_time - 1 + (cs - tr.prev_civil_sec));
+  cl.trans = FromUnixSeconds(tr.unix_time);
+  cl.post = FromUnixSeconds(tr.unix_time - (tr.civil_sec - cs));
+  return cl;
+}
+
+inline time_zone::civil_lookup MakeRepeated(const Transition& tr,
+                                            const civil_second& cs) {
+  time_zone::civil_lookup cl;
+  cl.kind = time_zone::civil_lookup::REPEATED;
+  cl.pre = FromUnixSeconds(tr.unix_time - 1 - (tr.prev_civil_sec - cs));
+  cl.trans = FromUnixSeconds(tr.unix_time);
+  cl.post = FromUnixSeconds(tr.unix_time + (cs - tr.civil_sec));
+  return cl;
+}
+
+inline civil_second YearShift(const civil_second& cs, year_t shift) {
+  return civil_second(cs.year() + shift, cs.month(), cs.day(), cs.hour(),
+                      cs.minute(), cs.second());
+}
+
+}  // namespace
+
+// What (no leap-seconds) UTC+seconds zoneinfo would look like.
+bool TimeZoneInfo::ResetToBuiltinUTC(const seconds& offset) {
+  transition_types_.resize(1);
+  TransitionType& tt(transition_types_.back());
+  tt.utc_offset = static_cast<std::int_least32_t>(offset.count());
+  tt.is_dst = false;
+  tt.abbr_index = 0;
+
+  // We temporarily add some redundant, contemporary (2013 through 2023)
+  // transitions for performance reasons.  See TimeZoneInfo::LocalTime().
+  // TODO: Fix the performance issue and remove the extra transitions.
+  transitions_.clear();
+  transitions_.reserve(12);
+  for (const std::int_fast64_t unix_time : {
+           -(1LL << 59),  // BIG_BANG
+           1356998400LL,  // 2013-01-01T00:00:00+00:00
+           1388534400LL,  // 2014-01-01T00:00:00+00:00
+           1420070400LL,  // 2015-01-01T00:00:00+00:00
+           1451606400LL,  // 2016-01-01T00:00:00+00:00
+           1483228800LL,  // 2017-01-01T00:00:00+00:00
+           1514764800LL,  // 2018-01-01T00:00:00+00:00
+           1546300800LL,  // 2019-01-01T00:00:00+00:00
+           1577836800LL,  // 2020-01-01T00:00:00+00:00
+           1609459200LL,  // 2021-01-01T00:00:00+00:00
+           1640995200LL,  // 2022-01-01T00:00:00+00:00
+           1672531200LL,  // 2023-01-01T00:00:00+00:00
+           2147483647LL,  // 2^31 - 1
+       }) {
+    Transition& tr(*transitions_.emplace(transitions_.end()));
+    tr.unix_time = unix_time;
+    tr.type_index = 0;
+    tr.civil_sec = LocalTime(tr.unix_time, tt).cs;
+    tr.prev_civil_sec = tr.civil_sec - 1;
+  }
+
+  default_transition_type_ = 0;
+  abbreviations_ = FixedOffsetToAbbr(offset);
+  abbreviations_.append(1, '\0');  // add NUL
+  future_spec_.clear();            // never needed for a fixed-offset zone
+  extended_ = false;
+
+  tt.civil_max = LocalTime(seconds::max().count(), tt).cs;
+  tt.civil_min = LocalTime(seconds::min().count(), tt).cs;
+
+  transitions_.shrink_to_fit();
+  return true;
+}
+
+// Builds the in-memory header using the raw bytes from the file.
+bool TimeZoneInfo::Header::Build(const tzhead& tzh) {
+  std::int_fast32_t v;
+  if ((v = Decode32(tzh.tzh_timecnt)) < 0) return false;
+  timecnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_typecnt)) < 0) return false;
+  typecnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_charcnt)) < 0) return false;
+  charcnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_leapcnt)) < 0) return false;
+  leapcnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_ttisstdcnt)) < 0) return false;
+  ttisstdcnt = static_cast<std::size_t>(v);
+  if ((v = Decode32(tzh.tzh_ttisutcnt)) < 0) return false;
+  ttisutcnt = static_cast<std::size_t>(v);
+  return true;
+}
+
+// How many bytes of data are associated with this header. The result
+// depends upon whether this is a section with 4-byte or 8-byte times.
+std::size_t TimeZoneInfo::Header::DataLength(std::size_t time_len) const {
+  std::size_t len = 0;
+  len += (time_len + 1) * timecnt;  // unix_time + type_index
+  len += (4 + 1 + 1) * typecnt;     // utc_offset + is_dst + abbr_index
+  len += 1 * charcnt;               // abbreviations
+  len += (time_len + 4) * leapcnt;  // leap-time + TAI-UTC
+  len += 1 * ttisstdcnt;            // UTC/local indicators
+  len += 1 * ttisutcnt;             // standard/wall indicators
+  return len;
+}
+
+// Check that the TransitionType has the expected offset/is_dst/abbreviation.
+void TimeZoneInfo::CheckTransition(const std::string& name,
+                                   const TransitionType& tt,
+                                   std::int_fast32_t offset, bool is_dst,
+                                   const std::string& abbr) const {
+  if (tt.utc_offset != offset || tt.is_dst != is_dst ||
+      &abbreviations_[tt.abbr_index] != abbr) {
+    std::clog << name << ": Transition"
+              << " offset=" << tt.utc_offset << "/"
+              << (tt.is_dst ? "DST" : "STD")
+              << "/abbr=" << &abbreviations_[tt.abbr_index]
+              << " does not match POSIX spec '" << future_spec_ << "'\n";
+  }
+}
+
+// zic(8) can generate no-op transitions when a zone changes rules at an
+// instant when there is actually no discontinuity.  So we check whether
+// two transitions have equivalent types (same offset/is_dst/abbr).
+bool TimeZoneInfo::EquivTransitions(std::uint_fast8_t tt1_index,
+                                    std::uint_fast8_t tt2_index) const {
+  if (tt1_index == tt2_index) return true;
+  const TransitionType& tt1(transition_types_[tt1_index]);
+  const TransitionType& tt2(transition_types_[tt2_index]);
+  if (tt1.is_dst != tt2.is_dst) return false;
+  if (tt1.utc_offset != tt2.utc_offset) return false;
+  if (tt1.abbr_index != tt2.abbr_index) return false;
+  return true;
+}
+
+// Use the POSIX-TZ-environment-variable-style string to handle times
+// in years after the last transition stored in the zoneinfo data.
+void TimeZoneInfo::ExtendTransitions(const std::string& name,
+                                     const Header& hdr) {
+  extended_ = false;
+  bool extending = !future_spec_.empty();
+
+  PosixTimeZone posix;
+  if (extending && !ParsePosixSpec(future_spec_, &posix)) {
+    std::clog << name << ": Failed to parse '" << future_spec_ << "'\n";
+    extending = false;
+  }
+
+  if (extending && posix.dst_abbr.empty()) {  // std only
+    // The future specification should match the last/default transition,
+    // and that means that handling the future will fall out naturally.
+    std::uint_fast8_t index = default_transition_type_;
+    if (hdr.timecnt != 0) index = transitions_[hdr.timecnt - 1].type_index;
+    const TransitionType& tt(transition_types_[index]);
+    CheckTransition(name, tt, posix.std_offset, false, posix.std_abbr);
+    extending = false;
+  }
+
+  if (extending && hdr.timecnt < 2) {
+    std::clog << name << ": Too few transitions for POSIX spec\n";
+    extending = false;
+  }
+
+  if (!extending) {
+    // Ensure that there is always a transition in the second half of the
+    // time line (the BIG_BANG transition is in the first half) so that the
+    // signed difference between a civil_second and the civil_second of its
+    // previous transition is always representable, without overflow.
+    const Transition& last(transitions_.back());
+    if (last.unix_time < 0) {
+      const std::uint_fast8_t type_index = last.type_index;
+      Transition& tr(*transitions_.emplace(transitions_.end()));
+      tr.unix_time = 2147483647;  // 2038-01-19T03:14:07+00:00
+      tr.type_index = type_index;
+    }
+    return;  // last transition wins
+  }
+
+  // Extend the transitions for an additional 400 years using the
+  // future specification. Years beyond those can be handled by
+  // mapping back to a cycle-equivalent year within that range.
+  // zic(8) should probably do this so that we don't have to.
+  // TODO: Reduce the extension by the number of compatible
+  // transitions already in place.
+  transitions_.reserve(hdr.timecnt + 400 * 2 + 1);
+  transitions_.resize(hdr.timecnt + 400 * 2);
+  extended_ = true;
+
+  // The future specification should match the last two transitions,
+  // and those transitions should have different is_dst flags.  Note
+  // that nothing says the UTC offset used by the is_dst transition
+  // must be greater than that used by the !is_dst transition.  (See
+  // Europe/Dublin, for example.)
+  const Transition* tr0 = &transitions_[hdr.timecnt - 1];
+  const Transition* tr1 = &transitions_[hdr.timecnt - 2];
+  const TransitionType* tt0 = &transition_types_[tr0->type_index];
+  const TransitionType* tt1 = &transition_types_[tr1->type_index];
+  const TransitionType& dst(tt0->is_dst ? *tt0 : *tt1);
+  const TransitionType& std(tt0->is_dst ? *tt1 : *tt0);
+  CheckTransition(name, dst, posix.dst_offset, true, posix.dst_abbr);
+  CheckTransition(name, std, posix.std_offset, false, posix.std_abbr);
+
+  // Add the transitions to tr1 and back to tr0 for each extra year.
+  last_year_ = LocalTime(tr0->unix_time, *tt0).cs.year();
+  bool leap_year = IsLeap(last_year_);
+  const civil_day jan1(last_year_, 1, 1);
+  std::int_fast64_t jan1_time = civil_second(jan1) - civil_second();
+  int jan1_weekday = (static_cast<int>(get_weekday(jan1)) + 1) % 7;
+  Transition* tr = &transitions_[hdr.timecnt];  // next trans to fill
+  if (LocalTime(tr1->unix_time, *tt1).cs.year() != last_year_) {
+    // Add a single extra transition to align to a calendar year.
+    transitions_.resize(transitions_.size() + 1);
+    assert(tr == &transitions_[hdr.timecnt]);  // no reallocation
+    const PosixTransition& pt1(tt0->is_dst ? posix.dst_end : posix.dst_start);
+    std::int_fast64_t tr1_offset = TransOffset(leap_year, jan1_weekday, pt1);
+    tr->unix_time = jan1_time + tr1_offset - tt0->utc_offset;
+    tr++->type_index = tr1->type_index;
+    tr0 = &transitions_[hdr.timecnt];
+    tr1 = &transitions_[hdr.timecnt - 1];
+    tt0 = &transition_types_[tr0->type_index];
+    tt1 = &transition_types_[tr1->type_index];
+  }
+  const PosixTransition& pt1(tt0->is_dst ? posix.dst_end : posix.dst_start);
+  const PosixTransition& pt0(tt0->is_dst ? posix.dst_start : posix.dst_end);
+  for (const year_t limit = last_year_ + 400; last_year_ < limit;) {
+    last_year_ += 1;  // an additional year of generated transitions
+    jan1_time += kSecsPerYear[leap_year];
+    jan1_weekday = (jan1_weekday + kDaysPerYear[leap_year]) % 7;
+    leap_year = !leap_year && IsLeap(last_year_);
+    std::int_fast64_t tr1_offset = TransOffset(leap_year, jan1_weekday, pt1);
+    tr->unix_time = jan1_time + tr1_offset - tt0->utc_offset;
+    tr++->type_index = tr1->type_index;
+    std::int_fast64_t tr0_offset = TransOffset(leap_year, jan1_weekday, pt0);
+    tr->unix_time = jan1_time + tr0_offset - tt1->utc_offset;
+    tr++->type_index = tr0->type_index;
+  }
+  assert(tr == &transitions_[0] + transitions_.size());
+}
+
+bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
+  // Read and validate the header.
+  tzhead tzh;
+  if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
+  if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
+    return false;
+  Header hdr;
+  if (!hdr.Build(tzh)) return false;
+  std::size_t time_len = 4;
+  if (tzh.tzh_version[0] != '\0') {
+    // Skip the 4-byte data.
+    if (zip->Skip(hdr.DataLength(time_len)) != 0) return false;
+    // Read and validate the header for the 8-byte data.
+    if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
+    if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
+      return false;
+    if (tzh.tzh_version[0] == '\0') return false;
+    if (!hdr.Build(tzh)) return false;
+    time_len = 8;
+  }
+  if (hdr.typecnt == 0) return false;
+  if (hdr.leapcnt != 0) {
+    // This code assumes 60-second minutes so we do not want
+    // the leap-second encoded zoneinfo. We could reverse the
+    // compensation, but the "right" encoding is rarely used
+    // so currently we simply reject such data.
+    return false;
+  }
+  if (hdr.ttisstdcnt != 0 && hdr.ttisstdcnt != hdr.typecnt) return false;
+  if (hdr.ttisutcnt != 0 && hdr.ttisutcnt != hdr.typecnt) return false;
+
+  // Read the data into a local buffer.
+  std::size_t len = hdr.DataLength(time_len);
+  std::vector<char> tbuf(len);
+  if (zip->Read(tbuf.data(), len) != len) return false;
+  const char* bp = tbuf.data();
+
+  // Decode and validate the transitions.
+  transitions_.reserve(hdr.timecnt + 2);  // We might add a couple.
+  transitions_.resize(hdr.timecnt);
+  for (std::size_t i = 0; i != hdr.timecnt; ++i) {
+    transitions_[i].unix_time = (time_len == 4) ? Decode32(bp) : Decode64(bp);
+    bp += time_len;
+    if (i != 0) {
+      // Check that the transitions are ordered by time (as zic guarantees).
+      if (!Transition::ByUnixTime()(transitions_[i - 1], transitions_[i]))
+        return false;  // out of order
+    }
+  }
+  bool seen_type_0 = false;
+  for (std::size_t i = 0; i != hdr.timecnt; ++i) {
+    transitions_[i].type_index = Decode8(bp++);
+    if (transitions_[i].type_index >= hdr.typecnt) return false;
+    if (transitions_[i].type_index == 0) seen_type_0 = true;
+  }
+
+  // Decode and validate the transition types.
+  transition_types_.resize(hdr.typecnt);
+  for (std::size_t i = 0; i != hdr.typecnt; ++i) {
+    transition_types_[i].utc_offset =
+        static_cast<std::int_least32_t>(Decode32(bp));
+    if (transition_types_[i].utc_offset >= kSecsPerDay ||
+        transition_types_[i].utc_offset <= -kSecsPerDay)
+      return false;
+    bp += 4;
+    transition_types_[i].is_dst = (Decode8(bp++) != 0);
+    transition_types_[i].abbr_index = Decode8(bp++);
+    if (transition_types_[i].abbr_index >= hdr.charcnt) return false;
+  }
+
+  // Determine the before-first-transition type.
+  default_transition_type_ = 0;
+  if (seen_type_0 && hdr.timecnt != 0) {
+    std::uint_fast8_t index = 0;
+    if (transition_types_[0].is_dst) {
+      index = transitions_[0].type_index;
+      while (index != 0 && transition_types_[index].is_dst) --index;
+    }
+    while (index != hdr.typecnt && transition_types_[index].is_dst) ++index;
+    if (index != hdr.typecnt) default_transition_type_ = index;
+  }
+
+  // Copy all the abbreviations.
+  abbreviations_.assign(bp, hdr.charcnt);
+  bp += hdr.charcnt;
+
+  // Skip the unused portions. We've already dispensed with leap-second
+  // encoded zoneinfo. The ttisstd/ttisgmt indicators only apply when
+  // interpreting a POSIX spec that does not include start/end rules, and
+  // that isn't the case here (see "zic -p").
+  bp += (8 + 4) * hdr.leapcnt;  // leap-time + TAI-UTC
+  bp += 1 * hdr.ttisstdcnt;     // UTC/local indicators
+  bp += 1 * hdr.ttisutcnt;      // standard/wall indicators
+  assert(bp == tbuf.data() + tbuf.size());
+
+  future_spec_.clear();
+  if (tzh.tzh_version[0] != '\0') {
+    // Snarf up the NL-enclosed future POSIX spec. Note
+    // that version '3' files utilize an extended format.
+    auto get_char = [](ZoneInfoSource* azip) -> int {
+      unsigned char ch;  // all non-EOF results are positive
+      return (azip->Read(&ch, 1) == 1) ? ch : EOF;
+    };
+    if (get_char(zip) != '\n') return false;
+    for (int c = get_char(zip); c != '\n'; c = get_char(zip)) {
+      if (c == EOF) return false;
+      future_spec_.push_back(static_cast<char>(c));
+    }
+  }
+
+  // We don't check for EOF so that we're forwards compatible.
+
+  // If we did not find version information during the standard loading
+  // process (as of tzh_version '3' that is unsupported), then ask the
+  // ZoneInfoSource for any out-of-bound version std::string it may be privy to.
+  if (version_.empty()) {
+    version_ = zip->Version();
+  }
+
+  // Trim redundant transitions. zic may have added these to work around
+  // differences between the glibc and reference implementations (see
+  // zic.c:dontmerge) and the Qt library (see zic.c:WORK_AROUND_QTBUG_53071).
+  // For us, they just get in the way when we do future_spec_ extension.
+  while (hdr.timecnt > 1) {
+    if (!EquivTransitions(transitions_[hdr.timecnt - 1].type_index,
+                          transitions_[hdr.timecnt - 2].type_index)) {
+      break;
+    }
+    hdr.timecnt -= 1;
+  }
+  transitions_.resize(hdr.timecnt);
+
+  // Ensure that there is always a transition in the first half of the
+  // time line (the second half is handled in ExtendTransitions()) so that
+  // the signed difference between a civil_second and the civil_second of
+  // its previous transition is always representable, without overflow.
+  // A contemporary zic will usually have already done this for us.
+  if (transitions_.empty() || transitions_.front().unix_time >= 0) {
+    Transition& tr(*transitions_.emplace(transitions_.begin()));
+    tr.unix_time = -(1LL << 59);  // see tz/zic.c "BIG_BANG"
+    tr.type_index = default_transition_type_;
+    hdr.timecnt += 1;
+  }
+
+  // Extend the transitions using the future specification.
+  ExtendTransitions(name, hdr);
+
+  // Compute the local civil time for each transition and the preceding
+  // second. These will be used for reverse conversions in MakeTime().
+  const TransitionType* ttp = &transition_types_[default_transition_type_];
+  for (std::size_t i = 0; i != transitions_.size(); ++i) {
+    Transition& tr(transitions_[i]);
+    tr.prev_civil_sec = LocalTime(tr.unix_time, *ttp).cs - 1;
+    ttp = &transition_types_[tr.type_index];
+    tr.civil_sec = LocalTime(tr.unix_time, *ttp).cs;
+    if (i != 0) {
+      // Check that the transitions are ordered by civil time. Essentially
+      // this means that an offset change cannot cross another such change.
+      // No one does this in practice, and we depend on it in MakeTime().
+      if (!Transition::ByCivilTime()(transitions_[i - 1], tr))
+        return false;  // out of order
+    }
+  }
+
+  // Compute the maximum/minimum civil times that can be converted to a
+  // time_point<seconds> for each of the zone's transition types.
+  for (auto& tt : transition_types_) {
+    tt.civil_max = LocalTime(seconds::max().count(), tt).cs;
+    tt.civil_min = LocalTime(seconds::min().count(), tt).cs;
+  }
+
+  transitions_.shrink_to_fit();
+  return true;
+}
+
+namespace {
+
+// fopen(3) adaptor.
+inline FILE* FOpen(const char* path, const char* mode) {
+#if defined(_MSC_VER)
+  FILE* fp;
+  if (fopen_s(&fp, path, mode) != 0) fp = nullptr;
+  return fp;
+#else
+  return fopen(path, mode);  // TODO: Enable the close-on-exec flag.
+#endif
+}
+
+// A stdio(3)-backed implementation of ZoneInfoSource.
+class FileZoneInfoSource : public ZoneInfoSource {
+ public:
+  static std::unique_ptr<ZoneInfoSource> Open(const std::string& name);
+
+  std::size_t Read(void* ptr, std::size_t size) override {
+    size = std::min(size, len_);
+    std::size_t nread = fread(ptr, 1, size, fp_.get());
+    len_ -= nread;
+    return nread;
+  }
+  int Skip(std::size_t offset) override {
+    offset = std::min(offset, len_);
+    int rc = fseek(fp_.get(), static_cast<long>(offset), SEEK_CUR);
+    if (rc == 0) len_ -= offset;
+    return rc;
+  }
+  std::string Version() const override {
+    // TODO: It would nice if the zoneinfo data included the tzdb version.
+    return std::string();
+  }
+
+ protected:
+  explicit FileZoneInfoSource(
+      FILE* fp, std::size_t len = std::numeric_limits<std::size_t>::max())
+      : fp_(fp, fclose), len_(len) {}
+
+ private:
+  std::unique_ptr<FILE, int (*)(FILE*)> fp_;
+  std::size_t len_;
+};
+
+std::unique_ptr<ZoneInfoSource> FileZoneInfoSource::Open(
+    const std::string& name) {
+  // Use of the "file:" prefix is intended for testing purposes only.
+  const std::size_t pos = (name.compare(0, 5, "file:") == 0) ? 5 : 0;
+
+  // Map the time-zone name to a path name.
+  std::string path;
+  if (pos == name.size() || name[pos] != '/') {
+    const char* tzdir = "/usr/share/zoneinfo";
+    char* tzdir_env = nullptr;
+#if defined(_MSC_VER)
+    _dupenv_s(&tzdir_env, nullptr, "TZDIR");
+#else
+    tzdir_env = std::getenv("TZDIR");
+#endif
+    if (tzdir_env && *tzdir_env) tzdir = tzdir_env;
+    path += tzdir;
+    path += '/';
+#if defined(_MSC_VER)
+    free(tzdir_env);
+#endif
+  }
+  path.append(name, pos, std::string::npos);
+
+  // Open the zoneinfo file.
+  FILE* fp = FOpen(path.c_str(), "rb");
+  if (fp == nullptr) return nullptr;
+  std::size_t length = 0;
+  if (fseek(fp, 0, SEEK_END) == 0) {
+    long offset = ftell(fp);
+    if (offset >= 0) {
+      length = static_cast<std::size_t>(offset);
+    }
+    rewind(fp);
+  }
+  return std::unique_ptr<ZoneInfoSource>(new FileZoneInfoSource(fp, length));
+}
+
+class AndroidZoneInfoSource : public FileZoneInfoSource {
+ public:
+  static std::unique_ptr<ZoneInfoSource> Open(const std::string& name);
+  std::string Version() const override { return version_; }
+
+ private:
+  explicit AndroidZoneInfoSource(FILE* fp, std::size_t len, const char* vers)
+      : FileZoneInfoSource(fp, len), version_(vers) {}
+  std::string version_;
+};
+
+std::unique_ptr<ZoneInfoSource> AndroidZoneInfoSource::Open(
+    const std::string& name) {
+  // Use of the "file:" prefix is intended for testing purposes only.
+  const std::size_t pos = (name.compare(0, 5, "file:") == 0) ? 5 : 0;
+
+  // See Android's libc/tzcode/bionic.cpp for additional information.
+  for (const char* tzdata : {"/data/misc/zoneinfo/current/tzdata",
+                             "/system/usr/share/zoneinfo/tzdata"}) {
+    std::unique_ptr<FILE, int (*)(FILE*)> fp(FOpen(tzdata, "rb"), fclose);
+    if (fp.get() == nullptr) continue;
+
+    char hbuf[24];  // covers header.zonetab_offset too
+    if (fread(hbuf, 1, sizeof(hbuf), fp.get()) != sizeof(hbuf)) continue;
+    if (strncmp(hbuf, "tzdata", 6) != 0) continue;
+    const char* vers = (hbuf[11] == '\0') ? hbuf + 6 : "";
+    const std::int_fast32_t index_offset = Decode32(hbuf + 12);
+    const std::int_fast32_t data_offset = Decode32(hbuf + 16);
+    if (index_offset < 0 || data_offset < index_offset) continue;
+    if (fseek(fp.get(), static_cast<long>(index_offset), SEEK_SET) != 0)
+      continue;
+
+    char ebuf[52];  // covers entry.unused too
+    const std::size_t index_size =
+        static_cast<std::size_t>(data_offset - index_offset);
+    const std::size_t zonecnt = index_size / sizeof(ebuf);
+    if (zonecnt * sizeof(ebuf) != index_size) continue;
+    for (std::size_t i = 0; i != zonecnt; ++i) {
+      if (fread(ebuf, 1, sizeof(ebuf), fp.get()) != sizeof(ebuf)) break;
+      const std::int_fast32_t start = data_offset + Decode32(ebuf + 40);
+      const std::int_fast32_t length = Decode32(ebuf + 44);
+      if (start < 0 || length < 0) break;
+      ebuf[40] = '\0';  // ensure zone name is NUL terminated
+      if (strcmp(name.c_str() + pos, ebuf) == 0) {
+        if (fseek(fp.get(), static_cast<long>(start), SEEK_SET) != 0) break;
+        return std::unique_ptr<ZoneInfoSource>(new AndroidZoneInfoSource(
+            fp.release(), static_cast<std::size_t>(length), vers));
+      }
+    }
+  }
+
+  return nullptr;
+}
+
+}  // namespace
+
+bool TimeZoneInfo::Load(const std::string& name) {
+  // We can ensure that the loading of UTC or any other fixed-offset
+  // zone never fails because the simple, fixed-offset state can be
+  // internally generated. Note that this depends on our choice to not
+  // accept leap-second encoded ("right") zoneinfo.
+  auto offset = seconds::zero();
+  if (FixedOffsetFromName(name, &offset)) {
+    return ResetToBuiltinUTC(offset);
+  }
+
+  // Find and use a ZoneInfoSource to load the named zone.
+  auto zip = cctz_extension::zone_info_source_factory(
+      name, [](const std::string& name) -> std::unique_ptr<ZoneInfoSource> {
+        if (auto zip = FileZoneInfoSource::Open(name)) return zip;
+        if (auto zip = AndroidZoneInfoSource::Open(name)) return zip;
+        return nullptr;
+      });
+  return zip != nullptr && Load(name, zip.get());
+}
+
+// BreakTime() translation for a particular transition type.
+time_zone::absolute_lookup TimeZoneInfo::LocalTime(
+    std::int_fast64_t unix_time, const TransitionType& tt) const {
+  // A civil time in "+offset" looks like (time+offset) in UTC.
+  // Note: We perform two additions in the civil_second domain to
+  // sidestep the chance of overflow in (unix_time + tt.utc_offset).
+  return {(civil_second() + unix_time) + tt.utc_offset, tt.utc_offset,
+          tt.is_dst, &abbreviations_[tt.abbr_index]};
+}
+
+// BreakTime() translation for a particular transition.
+time_zone::absolute_lookup TimeZoneInfo::LocalTime(std::int_fast64_t unix_time,
+                                                   const Transition& tr) const {
+  const TransitionType& tt = transition_types_[tr.type_index];
+  // Note: (unix_time - tr.unix_time) will never overflow as we
+  // have ensured that there is always a "nearby" transition.
+  return {tr.civil_sec + (unix_time - tr.unix_time),  // TODO: Optimize.
+          tt.utc_offset, tt.is_dst, &abbreviations_[tt.abbr_index]};
+}
+
+// MakeTime() translation with a conversion-preserving +N * 400-year shift.
+time_zone::civil_lookup TimeZoneInfo::TimeLocal(const civil_second& cs,
+                                                year_t c4_shift) const {
+  assert(last_year_ - 400 < cs.year() && cs.year() <= last_year_);
+  time_zone::civil_lookup cl = MakeTime(cs);
+  if (c4_shift > seconds::max().count() / kSecsPer400Years) {
+    cl.pre = cl.trans = cl.post = time_point<seconds>::max();
+  } else {
+    const auto offset = seconds(c4_shift * kSecsPer400Years);
+    const auto limit = time_point<seconds>::max() - offset;
+    for (auto* tp : {&cl.pre, &cl.trans, &cl.post}) {
+      if (*tp > limit) {
+        *tp = time_point<seconds>::max();
+      } else {
+        *tp += offset;
+      }
+    }
+  }
+  return cl;
+}
+
+time_zone::absolute_lookup TimeZoneInfo::BreakTime(
+    const time_point<seconds>& tp) const {
+  std::int_fast64_t unix_time = ToUnixSeconds(tp);
+  const std::size_t timecnt = transitions_.size();
+  assert(timecnt != 0);  // We always add a transition.
+
+  if (unix_time < transitions_[0].unix_time) {
+    return LocalTime(unix_time, transition_types_[default_transition_type_]);
+  }
+  if (unix_time >= transitions_[timecnt - 1].unix_time) {
+    // After the last transition. If we extended the transitions using
+    // future_spec_, shift back to a supported year using the 400-year
+    // cycle of calendaric equivalence and then compensate accordingly.
+    if (extended_) {
+      const std::int_fast64_t diff =
+          unix_time - transitions_[timecnt - 1].unix_time;
+      const year_t shift = diff / kSecsPer400Years + 1;
+      const auto d = seconds(shift * kSecsPer400Years);
+      time_zone::absolute_lookup al = BreakTime(tp - d);
+      al.cs = YearShift(al.cs, shift * 400);
+      return al;
+    }
+    return LocalTime(unix_time, transitions_[timecnt - 1]);
+  }
+
+  const std::size_t hint = local_time_hint_.load(std::memory_order_relaxed);
+  if (0 < hint && hint < timecnt) {
+    if (transitions_[hint - 1].unix_time <= unix_time) {
+      if (unix_time < transitions_[hint].unix_time) {
+        return LocalTime(unix_time, transitions_[hint - 1]);
+      }
+    }
+  }
+
+  const Transition target = {unix_time, 0, civil_second(), civil_second()};
+  const Transition* begin = &transitions_[0];
+  const Transition* tr = std::upper_bound(begin, begin + timecnt, target,
+                                          Transition::ByUnixTime());
+  local_time_hint_.store(static_cast<std::size_t>(tr - begin),
+                         std::memory_order_relaxed);
+  return LocalTime(unix_time, *--tr);
+}
+
+time_zone::civil_lookup TimeZoneInfo::MakeTime(const civil_second& cs) const {
+  const std::size_t timecnt = transitions_.size();
+  assert(timecnt != 0);  // We always add a transition.
+
+  // Find the first transition after our target civil time.
+  const Transition* tr = nullptr;
+  const Transition* begin = &transitions_[0];
+  const Transition* end = begin + timecnt;
+  if (cs < begin->civil_sec) {
+    tr = begin;
+  } else if (cs >= transitions_[timecnt - 1].civil_sec) {
+    tr = end;
+  } else {
+    const std::size_t hint = time_local_hint_.load(std::memory_order_relaxed);
+    if (0 < hint && hint < timecnt) {
+      if (transitions_[hint - 1].civil_sec <= cs) {
+        if (cs < transitions_[hint].civil_sec) {
+          tr = begin + hint;
+        }
+      }
+    }
+    if (tr == nullptr) {
+      const Transition target = {0, 0, cs, civil_second()};
+      tr = std::upper_bound(begin, end, target, Transition::ByCivilTime());
+      time_local_hint_.store(static_cast<std::size_t>(tr - begin),
+                             std::memory_order_relaxed);
+    }
+  }
+
+  if (tr == begin) {
+    if (tr->prev_civil_sec >= cs) {
+      // Before first transition, so use the default offset.
+      const TransitionType& tt(transition_types_[default_transition_type_]);
+      if (cs < tt.civil_min) return MakeUnique(time_point<seconds>::min());
+      return MakeUnique(cs - (civil_second() + tt.utc_offset));
+    }
+    // tr->prev_civil_sec < cs < tr->civil_sec
+    return MakeSkipped(*tr, cs);
+  }
+
+  if (tr == end) {
+    if (cs > (--tr)->prev_civil_sec) {
+      // After the last transition. If we extended the transitions using
+      // future_spec_, shift back to a supported year using the 400-year
+      // cycle of calendaric equivalence and then compensate accordingly.
+      if (extended_ && cs.year() > last_year_) {
+        const year_t shift = (cs.year() - last_year_ - 1) / 400 + 1;
+        return TimeLocal(YearShift(cs, shift * -400), shift);
+      }
+      const TransitionType& tt(transition_types_[tr->type_index]);
+      if (cs > tt.civil_max) return MakeUnique(time_point<seconds>::max());
+      return MakeUnique(tr->unix_time + (cs - tr->civil_sec));
+    }
+    // tr->civil_sec <= cs <= tr->prev_civil_sec
+    return MakeRepeated(*tr, cs);
+  }
+
+  if (tr->prev_civil_sec < cs) {
+    // tr->prev_civil_sec < cs < tr->civil_sec
+    return MakeSkipped(*tr, cs);
+  }
+
+  if (cs <= (--tr)->prev_civil_sec) {
+    // tr->civil_sec <= cs <= tr->prev_civil_sec
+    return MakeRepeated(*tr, cs);
+  }
+
+  // In between transitions.
+  return MakeUnique(tr->unix_time + (cs - tr->civil_sec));
+}
+
+std::string TimeZoneInfo::Version() const { return version_; }
+
+std::string TimeZoneInfo::Description() const {
+  std::ostringstream oss;
+  oss << "#trans=" << transitions_.size();
+  oss << " #types=" << transition_types_.size();
+  oss << " spec='" << future_spec_ << "'";
+  return oss.str();
+}
+
+bool TimeZoneInfo::NextTransition(const time_point<seconds>& tp,
+                                  time_zone::civil_transition* trans) const {
+  if (transitions_.empty()) return false;
+  const Transition* begin = &transitions_[0];
+  const Transition* end = begin + transitions_.size();
+  if (begin->unix_time <= -(1LL << 59)) {
+    // Do not report the BIG_BANG found in recent zoneinfo data as it is
+    // really a sentinel, not a transition.  See tz/zic.c.
+    ++begin;
+  }
+  std::int_fast64_t unix_time = ToUnixSeconds(tp);
+  const Transition target = {unix_time, 0, civil_second(), civil_second()};
+  const Transition* tr =
+      std::upper_bound(begin, end, target, Transition::ByUnixTime());
+  for (; tr != end; ++tr) {  // skip no-op transitions
+    std::uint_fast8_t prev_type_index =
+        (tr == begin) ? default_transition_type_ : tr[-1].type_index;
+    if (!EquivTransitions(prev_type_index, tr[0].type_index)) break;
+  }
+  // When tr == end we return false, ignoring future_spec_.
+  if (tr == end) return false;
+  trans->from = tr->prev_civil_sec + 1;
+  trans->to = tr->civil_sec;
+  return true;
+}
+
+bool TimeZoneInfo::PrevTransition(const time_point<seconds>& tp,
+                                  time_zone::civil_transition* trans) const {
+  if (transitions_.empty()) return false;
+  const Transition* begin = &transitions_[0];
+  const Transition* end = begin + transitions_.size();
+  if (begin->unix_time <= -(1LL << 59)) {
+    // Do not report the BIG_BANG found in recent zoneinfo data as it is
+    // really a sentinel, not a transition.  See tz/zic.c.
+    ++begin;
+  }
+  std::int_fast64_t unix_time = ToUnixSeconds(tp);
+  if (FromUnixSeconds(unix_time) != tp) {
+    if (unix_time == std::numeric_limits<std::int_fast64_t>::max()) {
+      if (end == begin) return false;  // Ignore future_spec_.
+      trans->from = (--end)->prev_civil_sec + 1;
+      trans->to = end->civil_sec;
+      return true;
+    }
+    unix_time += 1;  // ceils
+  }
+  const Transition target = {unix_time, 0, civil_second(), civil_second()};
+  const Transition* tr =
+      std::lower_bound(begin, end, target, Transition::ByUnixTime());
+  for (; tr != begin; --tr) {  // skip no-op transitions
+    std::uint_fast8_t prev_type_index =
+        (tr - 1 == begin) ? default_transition_type_ : tr[-2].type_index;
+    if (!EquivTransitions(prev_type_index, tr[-1].type_index)) break;
+  }
+  // When tr == end we return the "last" transition, ignoring future_spec_.
+  if (tr == begin) return false;
+  trans->from = (--tr)->prev_civil_sec + 1;
+  trans->to = tr->civil_sec;
+  return true;
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.h
new file mode 100644
index 0000000..2a10c06
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_info.h	
@@ -0,0 +1,138 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
+
+#include <atomic>
+#include <cstddef>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+#include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
+#include "time_zone_if.h"
+#include "tzfile.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// A transition to a new UTC offset.
+struct Transition {
+  std::int_least64_t unix_time;   // the instant of this transition
+  std::uint_least8_t type_index;  // index of the transition type
+  civil_second civil_sec;         // local civil time of transition
+  civil_second prev_civil_sec;    // local civil time one second earlier
+
+  struct ByUnixTime {
+    inline bool operator()(const Transition& lhs, const Transition& rhs) const {
+      return lhs.unix_time < rhs.unix_time;
+    }
+  };
+  struct ByCivilTime {
+    inline bool operator()(const Transition& lhs, const Transition& rhs) const {
+      return lhs.civil_sec < rhs.civil_sec;
+    }
+  };
+};
+
+// The characteristics of a particular transition.
+struct TransitionType {
+  std::int_least32_t utc_offset;  // the new prevailing UTC offset
+  civil_second civil_max;         // max convertible civil time for offset
+  civil_second civil_min;         // min convertible civil time for offset
+  bool is_dst;                    // did we move into daylight-saving time
+  std::uint_least8_t abbr_index;  // index of the new abbreviation
+};
+
+// A time zone backed by the IANA Time Zone Database (zoneinfo).
+class TimeZoneInfo : public TimeZoneIf {
+ public:
+  TimeZoneInfo() = default;
+  TimeZoneInfo(const TimeZoneInfo&) = delete;
+  TimeZoneInfo& operator=(const TimeZoneInfo&) = delete;
+
+  // Loads the zoneinfo for the given name, returning true if successful.
+  bool Load(const std::string& name);
+
+  // TimeZoneIf implementations.
+  time_zone::absolute_lookup BreakTime(
+      const time_point<seconds>& tp) const override;
+  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
+  bool NextTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const override;
+  bool PrevTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const override;
+  std::string Version() const override;
+  std::string Description() const override;
+
+ private:
+  struct Header {            // counts of:
+    std::size_t timecnt;     // transition times
+    std::size_t typecnt;     // transition types
+    std::size_t charcnt;     // zone abbreviation characters
+    std::size_t leapcnt;     // leap seconds (we expect none)
+    std::size_t ttisstdcnt;  // UTC/local indicators (unused)
+    std::size_t ttisutcnt;   // standard/wall indicators (unused)
+
+    bool Build(const tzhead& tzh);
+    std::size_t DataLength(std::size_t time_len) const;
+  };
+
+  void CheckTransition(const std::string& name, const TransitionType& tt,
+                       std::int_fast32_t offset, bool is_dst,
+                       const std::string& abbr) const;
+  bool EquivTransitions(std::uint_fast8_t tt1_index,
+                        std::uint_fast8_t tt2_index) const;
+  void ExtendTransitions(const std::string& name, const Header& hdr);
+
+  bool ResetToBuiltinUTC(const seconds& offset);
+  bool Load(const std::string& name, ZoneInfoSource* zip);
+
+  // Helpers for BreakTime() and MakeTime().
+  time_zone::absolute_lookup LocalTime(std::int_fast64_t unix_time,
+                                       const TransitionType& tt) const;
+  time_zone::absolute_lookup LocalTime(std::int_fast64_t unix_time,
+                                       const Transition& tr) const;
+  time_zone::civil_lookup TimeLocal(const civil_second& cs,
+                                    year_t c4_shift) const;
+
+  std::vector<Transition> transitions_;  // ordered by unix_time and civil_sec
+  std::vector<TransitionType> transition_types_;  // distinct transition types
+  std::uint_fast8_t default_transition_type_;     // for before first transition
+  std::string abbreviations_;  // all the NUL-terminated abbreviations
+
+  std::string version_;      // the tzdata version if available
+  std::string future_spec_;  // for after the last zic transition
+  bool extended_;            // future_spec_ was used to generate transitions
+  year_t last_year_;         // the final year of the generated transitions
+
+  // We remember the transitions found during the last BreakTime() and
+  // MakeTime() calls. If the next request is for the same transition we
+  // will avoid re-searching.
+  mutable std::atomic<std::size_t> local_time_hint_ = {};  // BreakTime() hint
+  mutable std::atomic<std::size_t> time_local_hint_ = {};  // MakeTime() hint
+};
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.cc
new file mode 100644
index 0000000..47cf84c
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.cc	
@@ -0,0 +1,308 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#if defined(_WIN32) || defined(_WIN64)
+#define _CRT_SECURE_NO_WARNINGS 1
+#endif
+
+#include "time_zone_libc.h"
+
+#include <chrono>
+#include <ctime>
+#include <limits>
+#include <utility>
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+namespace {
+
+#if defined(_WIN32) || defined(_WIN64)
+// Uses the globals: '_timezone', '_dstbias' and '_tzname'.
+auto tm_gmtoff(const std::tm& tm) -> decltype(_timezone + _dstbias) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return _timezone + (is_dst ? _dstbias : 0);
+}
+auto tm_zone(const std::tm& tm) -> decltype(_tzname[0]) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return _tzname[is_dst];
+}
+#elif defined(__sun)
+// Uses the globals: 'timezone', 'altzone' and 'tzname'.
+auto tm_gmtoff(const std::tm& tm) -> decltype(timezone) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return is_dst ? altzone : timezone;
+}
+auto tm_zone(const std::tm& tm) -> decltype(tzname[0]) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return tzname[is_dst];
+}
+#elif defined(__native_client__) || defined(__myriad2__) || \
+    defined(__EMSCRIPTEN__)
+// Uses the globals: 'timezone' and 'tzname'.
+auto tm_gmtoff(const std::tm& tm) -> decltype(_timezone + 0) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return _timezone + (is_dst ? 60 * 60 : 0);
+}
+auto tm_zone(const std::tm& tm) -> decltype(tzname[0]) {
+  const bool is_dst = tm.tm_isdst > 0;
+  return tzname[is_dst];
+}
+#else
+// Adapt to different spellings of the struct std::tm extension fields.
+#if defined(tm_gmtoff)
+auto tm_gmtoff(const std::tm& tm) -> decltype(tm.tm_gmtoff) {
+  return tm.tm_gmtoff;
+}
+#elif defined(__tm_gmtoff)
+auto tm_gmtoff(const std::tm& tm) -> decltype(tm.__tm_gmtoff) {
+  return tm.__tm_gmtoff;
+}
+#else
+template <typename T>
+auto tm_gmtoff(const T& tm) -> decltype(tm.tm_gmtoff) {
+  return tm.tm_gmtoff;
+}
+template <typename T>
+auto tm_gmtoff(const T& tm) -> decltype(tm.__tm_gmtoff) {
+  return tm.__tm_gmtoff;
+}
+#endif  // tm_gmtoff
+#if defined(tm_zone)
+auto tm_zone(const std::tm& tm) -> decltype(tm.tm_zone) { return tm.tm_zone; }
+#elif defined(__tm_zone)
+auto tm_zone(const std::tm& tm) -> decltype(tm.__tm_zone) {
+  return tm.__tm_zone;
+}
+#else
+template <typename T>
+auto tm_zone(const T& tm) -> decltype(tm.tm_zone) {
+  return tm.tm_zone;
+}
+template <typename T>
+auto tm_zone(const T& tm) -> decltype(tm.__tm_zone) {
+  return tm.__tm_zone;
+}
+#endif  // tm_zone
+#endif
+
+inline std::tm* gm_time(const std::time_t* timep, std::tm* result) {
+#if defined(_WIN32) || defined(_WIN64)
+  return gmtime_s(result, timep) ? nullptr : result;
+#else
+  return gmtime_r(timep, result);
+#endif
+}
+
+inline std::tm* local_time(const std::time_t* timep, std::tm* result) {
+#if defined(_WIN32) || defined(_WIN64)
+  return localtime_s(result, timep) ? nullptr : result;
+#else
+  return localtime_r(timep, result);
+#endif
+}
+
+// Converts a civil second and "dst" flag into a time_t and UTC offset.
+// Returns false if time_t cannot represent the requested civil second.
+// Caller must have already checked that cs.year() will fit into a tm_year.
+bool make_time(const civil_second& cs, int is_dst, std::time_t* t, int* off) {
+  std::tm tm;
+  tm.tm_year = static_cast<int>(cs.year() - year_t{1900});
+  tm.tm_mon = cs.month() - 1;
+  tm.tm_mday = cs.day();
+  tm.tm_hour = cs.hour();
+  tm.tm_min = cs.minute();
+  tm.tm_sec = cs.second();
+  tm.tm_isdst = is_dst;
+  *t = std::mktime(&tm);
+  if (*t == std::time_t{-1}) {
+    std::tm tm2;
+    const std::tm* tmp = local_time(t, &tm2);
+    if (tmp == nullptr || tmp->tm_year != tm.tm_year ||
+        tmp->tm_mon != tm.tm_mon || tmp->tm_mday != tm.tm_mday ||
+        tmp->tm_hour != tm.tm_hour || tmp->tm_min != tm.tm_min ||
+        tmp->tm_sec != tm.tm_sec) {
+      // A true error (not just one second before the epoch).
+      return false;
+    }
+  }
+  *off = static_cast<int>(tm_gmtoff(tm));
+  return true;
+}
+
+// Find the least time_t in [lo:hi] where local time matches offset, given:
+// (1) lo doesn't match, (2) hi does, and (3) there is only one transition.
+std::time_t find_trans(std::time_t lo, std::time_t hi, int offset) {
+  std::tm tm;
+  while (lo + 1 != hi) {
+    const std::time_t mid = lo + (hi - lo) / 2;
+    if (std::tm* tmp = local_time(&mid, &tm)) {
+      if (tm_gmtoff(*tmp) == offset) {
+        hi = mid;
+      } else {
+        lo = mid;
+      }
+    } else {
+      // If std::tm cannot hold some result we resort to a linear search,
+      // ignoring all failed conversions.  Slow, but never really happens.
+      while (++lo != hi) {
+        if (std::tm* tmp = local_time(&lo, &tm)) {
+          if (tm_gmtoff(*tmp) == offset) break;
+        }
+      }
+      return lo;
+    }
+  }
+  return hi;
+}
+
+}  // namespace
+
+TimeZoneLibC::TimeZoneLibC(const std::string& name)
+    : local_(name == "localtime") {}
+
+time_zone::absolute_lookup TimeZoneLibC::BreakTime(
+    const time_point<seconds>& tp) const {
+  time_zone::absolute_lookup al;
+  al.offset = 0;
+  al.is_dst = false;
+  al.abbr = "-00";
+
+  const std::int_fast64_t s = ToUnixSeconds(tp);
+
+  // If std::time_t cannot hold the input we saturate the output.
+  if (s < std::numeric_limits<std::time_t>::min()) {
+    al.cs = civil_second::min();
+    return al;
+  }
+  if (s > std::numeric_limits<std::time_t>::max()) {
+    al.cs = civil_second::max();
+    return al;
+  }
+
+  const std::time_t t = static_cast<std::time_t>(s);
+  std::tm tm;
+  std::tm* tmp = local_ ? local_time(&t, &tm) : gm_time(&t, &tm);
+
+  // If std::tm cannot hold the result we saturate the output.
+  if (tmp == nullptr) {
+    al.cs = (s < 0) ? civil_second::min() : civil_second::max();
+    return al;
+  }
+
+  const year_t year = tmp->tm_year + year_t{1900};
+  al.cs = civil_second(year, tmp->tm_mon + 1, tmp->tm_mday, tmp->tm_hour,
+                       tmp->tm_min, tmp->tm_sec);
+  al.offset = static_cast<int>(tm_gmtoff(*tmp));
+  al.abbr = local_ ? tm_zone(*tmp) : "UTC";  // as expected by cctz
+  al.is_dst = tmp->tm_isdst > 0;
+  return al;
+}
+
+time_zone::civil_lookup TimeZoneLibC::MakeTime(const civil_second& cs) const {
+  if (!local_) {
+    // If time_point<seconds> cannot hold the result we saturate.
+    static const civil_second min_tp_cs =
+        civil_second() + ToUnixSeconds(time_point<seconds>::min());
+    static const civil_second max_tp_cs =
+        civil_second() + ToUnixSeconds(time_point<seconds>::max());
+    const time_point<seconds> tp =
+        (cs < min_tp_cs)
+            ? time_point<seconds>::min()
+            : (cs > max_tp_cs) ? time_point<seconds>::max()
+                               : FromUnixSeconds(cs - civil_second());
+    return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
+  }
+
+  // If tm_year cannot hold the requested year we saturate the result.
+  if (cs.year() < 0) {
+    if (cs.year() < std::numeric_limits<int>::min() + year_t{1900}) {
+      const time_point<seconds> tp = time_point<seconds>::min();
+      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
+    }
+  } else {
+    if (cs.year() - year_t{1900} > std::numeric_limits<int>::max()) {
+      const time_point<seconds> tp = time_point<seconds>::max();
+      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
+    }
+  }
+
+  // We probe with "is_dst" values of 0 and 1 to try to distinguish unique
+  // civil seconds from skipped or repeated ones.  This is not always possible
+  // however, as the "dst" flag does not change over some offset transitions.
+  // We are also subject to the vagaries of mktime() implementations.
+  std::time_t t0, t1;
+  int offset0, offset1;
+  if (make_time(cs, 0, &t0, &offset0) && make_time(cs, 1, &t1, &offset1)) {
+    if (t0 == t1) {
+      // The civil time was singular (pre == trans == post).
+      const time_point<seconds> tp = FromUnixSeconds(t0);
+      return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
+    }
+
+    if (t0 > t1) {
+      std::swap(t0, t1);
+      std::swap(offset0, offset1);
+    }
+    const std::time_t tt = find_trans(t0, t1, offset1);
+    const time_point<seconds> trans = FromUnixSeconds(tt);
+
+    if (offset0 < offset1) {
+      // The civil time did not exist (pre >= trans > post).
+      const time_point<seconds> pre = FromUnixSeconds(t1);
+      const time_point<seconds> post = FromUnixSeconds(t0);
+      return {time_zone::civil_lookup::SKIPPED, pre, trans, post};
+    }
+
+    // The civil time was ambiguous (pre < trans <= post).
+    const time_point<seconds> pre = FromUnixSeconds(t0);
+    const time_point<seconds> post = FromUnixSeconds(t1);
+    return {time_zone::civil_lookup::REPEATED, pre, trans, post};
+  }
+
+  // make_time() failed somehow so we saturate the result.
+  const time_point<seconds> tp = (cs < civil_second())
+                                     ? time_point<seconds>::min()
+                                     : time_point<seconds>::max();
+  return {time_zone::civil_lookup::UNIQUE, tp, tp, tp};
+}
+
+bool TimeZoneLibC::NextTransition(const time_point<seconds>&,
+                                  time_zone::civil_transition*) const {
+  return false;
+}
+
+bool TimeZoneLibC::PrevTransition(const time_point<seconds>&,
+                                  time_zone::civil_transition*) const {
+  return false;
+}
+
+std::string TimeZoneLibC::Version() const {
+  return std::string();  // unknown
+}
+
+std::string TimeZoneLibC::Description() const {
+  return local_ ? "localtime" : "UTC";
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.h
new file mode 100644
index 0000000..1da9039
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_libc.h	
@@ -0,0 +1,55 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
+
+#include <string>
+
+#include "absl/base/config.h"
+#include "time_zone_if.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// A time zone backed by gmtime_r(3), localtime_r(3), and mktime(3),
+// and which therefore only supports UTC and the local time zone.
+// TODO: Add support for fixed offsets from UTC.
+class TimeZoneLibC : public TimeZoneIf {
+ public:
+  explicit TimeZoneLibC(const std::string& name);
+
+  // TimeZoneIf implementations.
+  time_zone::absolute_lookup BreakTime(
+      const time_point<seconds>& tp) const override;
+  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
+  bool NextTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const override;
+  bool PrevTransition(const time_point<seconds>& tp,
+                      time_zone::civil_transition* trans) const override;
+  std::string Version() const override;
+  std::string Description() const override;
+
+ private:
+  const bool local_;  // localtime or UTC
+};
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_lookup.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_lookup.cc
new file mode 100644
index 0000000..efdea64
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_lookup.cc	
@@ -0,0 +1,187 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+#if defined(__ANDROID__)
+#include <sys/system_properties.h>
+#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
+#include <dlfcn.h>
+#endif
+#endif
+
+#if defined(__APPLE__)
+#include <CoreFoundation/CFTimeZone.h>
+
+#include <vector>
+#endif
+
+#include <cstdlib>
+#include <cstring>
+#include <string>
+
+#include "time_zone_fixed.h"
+#include "time_zone_impl.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+#if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ >= 21
+namespace {
+// Android 'L' removes __system_property_get() from the NDK, however
+// it is still a hidden symbol in libc so we use dlsym() to access it.
+// See Chromium's base/sys_info_android.cc for a similar example.
+
+using property_get_func = int (*)(const char*, char*);
+
+property_get_func LoadSystemPropertyGet() {
+  int flag = RTLD_LAZY | RTLD_GLOBAL;
+#if defined(RTLD_NOLOAD)
+  flag |= RTLD_NOLOAD;  // libc.so should already be resident
+#endif
+  if (void* handle = dlopen("libc.so", flag)) {
+    void* sym = dlsym(handle, "__system_property_get");
+    dlclose(handle);
+    return reinterpret_cast<property_get_func>(sym);
+  }
+  return nullptr;
+}
+
+int __system_property_get(const char* name, char* value) {
+  static property_get_func system_property_get = LoadSystemPropertyGet();
+  return system_property_get ? system_property_get(name, value) : -1;
+}
+
+}  // namespace
+#endif
+
+std::string time_zone::name() const { return effective_impl().Name(); }
+
+time_zone::absolute_lookup time_zone::lookup(
+    const time_point<seconds>& tp) const {
+  return effective_impl().BreakTime(tp);
+}
+
+time_zone::civil_lookup time_zone::lookup(const civil_second& cs) const {
+  return effective_impl().MakeTime(cs);
+}
+
+bool time_zone::next_transition(const time_point<seconds>& tp,
+                                civil_transition* trans) const {
+  return effective_impl().NextTransition(tp, trans);
+}
+
+bool time_zone::prev_transition(const time_point<seconds>& tp,
+                                civil_transition* trans) const {
+  return effective_impl().PrevTransition(tp, trans);
+}
+
+std::string time_zone::version() const { return effective_impl().Version(); }
+
+std::string time_zone::description() const {
+  return effective_impl().Description();
+}
+
+const time_zone::Impl& time_zone::effective_impl() const {
+  if (impl_ == nullptr) {
+    // Dereferencing an implicit-UTC time_zone is expected to be
+    // rare, so we don't mind paying a small synchronization cost.
+    return *time_zone::Impl::UTC().impl_;
+  }
+  return *impl_;
+}
+
+bool load_time_zone(const std::string& name, time_zone* tz) {
+  return time_zone::Impl::LoadTimeZone(name, tz);
+}
+
+time_zone utc_time_zone() {
+  return time_zone::Impl::UTC();  // avoid name lookup
+}
+
+time_zone fixed_time_zone(const seconds& offset) {
+  time_zone tz;
+  load_time_zone(FixedOffsetToName(offset), &tz);
+  return tz;
+}
+
+time_zone local_time_zone() {
+  const char* zone = ":localtime";
+#if defined(__ANDROID__)
+  char sysprop[PROP_VALUE_MAX];
+  if (__system_property_get("persist.sys.timezone", sysprop) > 0) {
+    zone = sysprop;
+  }
+#endif
+#if defined(__APPLE__)
+  std::vector<char> buffer;
+  CFTimeZoneRef tz_default = CFTimeZoneCopyDefault();
+  if (CFStringRef tz_name = CFTimeZoneGetName(tz_default)) {
+    CFStringEncoding encoding = kCFStringEncodingUTF8;
+    CFIndex length = CFStringGetLength(tz_name);
+    buffer.resize(CFStringGetMaximumSizeForEncoding(length, encoding) + 1);
+    if (CFStringGetCString(tz_name, &buffer[0], buffer.size(), encoding)) {
+      zone = &buffer[0];
+    }
+  }
+  CFRelease(tz_default);
+#endif
+
+  // Allow ${TZ} to override to default zone.
+  char* tz_env = nullptr;
+#if defined(_MSC_VER)
+  _dupenv_s(&tz_env, nullptr, "TZ");
+#else
+  tz_env = std::getenv("TZ");
+#endif
+  if (tz_env) zone = tz_env;
+
+  // We only support the "[:]<zone-name>" form.
+  if (*zone == ':') ++zone;
+
+  // Map "localtime" to a system-specific name, but
+  // allow ${LOCALTIME} to override the default name.
+  char* localtime_env = nullptr;
+  if (strcmp(zone, "localtime") == 0) {
+#if defined(_MSC_VER)
+    // System-specific default is just "localtime".
+    _dupenv_s(&localtime_env, nullptr, "LOCALTIME");
+#else
+    zone = "/etc/localtime";  // System-specific default.
+    localtime_env = std::getenv("LOCALTIME");
+#endif
+    if (localtime_env) zone = localtime_env;
+  }
+
+  const std::string name = zone;
+#if defined(_MSC_VER)
+  free(localtime_env);
+  free(tz_env);
+#endif
+
+  time_zone tz;
+  load_time_zone(name, &tz);  // Falls back to UTC.
+  // TODO: Follow the RFC3339 "Unknown Local Offset Convention" and
+  // arrange for %z to generate "-0000" when we don't know the local
+  // offset because the load_time_zone() failed and we're using UTC.
+  return tz;
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.cc
new file mode 100644
index 0000000..5cdd09e
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.cc	
@@ -0,0 +1,159 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "time_zone_posix.h"
+
+#include <cstddef>
+#include <cstring>
+#include <limits>
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+namespace {
+
+const char kDigits[] = "0123456789";
+
+const char* ParseInt(const char* p, int min, int max, int* vp) {
+  int value = 0;
+  const char* op = p;
+  const int kMaxInt = std::numeric_limits<int>::max();
+  for (; const char* dp = strchr(kDigits, *p); ++p) {
+    int d = static_cast<int>(dp - kDigits);
+    if (d >= 10) break;  // '\0'
+    if (value > kMaxInt / 10) return nullptr;
+    value *= 10;
+    if (value > kMaxInt - d) return nullptr;
+    value += d;
+  }
+  if (p == op || value < min || value > max) return nullptr;
+  *vp = value;
+  return p;
+}
+
+// abbr = <.*?> | [^-+,\d]{3,}
+const char* ParseAbbr(const char* p, std::string* abbr) {
+  const char* op = p;
+  if (*p == '<') {  // special zoneinfo <...> form
+    while (*++p != '>') {
+      if (*p == '\0') return nullptr;
+    }
+    abbr->assign(op + 1, static_cast<std::size_t>(p - op) - 1);
+    return ++p;
+  }
+  while (*p != '\0') {
+    if (strchr("-+,", *p)) break;
+    if (strchr(kDigits, *p)) break;
+    ++p;
+  }
+  if (p - op < 3) return nullptr;
+  abbr->assign(op, static_cast<std::size_t>(p - op));
+  return p;
+}
+
+// offset = [+|-]hh[:mm[:ss]] (aggregated into single seconds value)
+const char* ParseOffset(const char* p, int min_hour, int max_hour, int sign,
+                        std::int_fast32_t* offset) {
+  if (p == nullptr) return nullptr;
+  if (*p == '+' || *p == '-') {
+    if (*p++ == '-') sign = -sign;
+  }
+  int hours = 0;
+  int minutes = 0;
+  int seconds = 0;
+
+  p = ParseInt(p, min_hour, max_hour, &hours);
+  if (p == nullptr) return nullptr;
+  if (*p == ':') {
+    p = ParseInt(p + 1, 0, 59, &minutes);
+    if (p == nullptr) return nullptr;
+    if (*p == ':') {
+      p = ParseInt(p + 1, 0, 59, &seconds);
+      if (p == nullptr) return nullptr;
+    }
+  }
+  *offset = sign * ((((hours * 60) + minutes) * 60) + seconds);
+  return p;
+}
+
+// datetime = ( Jn | n | Mm.w.d ) [ / offset ]
+const char* ParseDateTime(const char* p, PosixTransition* res) {
+  if (p != nullptr && *p == ',') {
+    if (*++p == 'M') {
+      int month = 0;
+      if ((p = ParseInt(p + 1, 1, 12, &month)) != nullptr && *p == '.') {
+        int week = 0;
+        if ((p = ParseInt(p + 1, 1, 5, &week)) != nullptr && *p == '.') {
+          int weekday = 0;
+          if ((p = ParseInt(p + 1, 0, 6, &weekday)) != nullptr) {
+            res->date.fmt = PosixTransition::M;
+            res->date.m.month = static_cast<std::int_fast8_t>(month);
+            res->date.m.week = static_cast<std::int_fast8_t>(week);
+            res->date.m.weekday = static_cast<std::int_fast8_t>(weekday);
+          }
+        }
+      }
+    } else if (*p == 'J') {
+      int day = 0;
+      if ((p = ParseInt(p + 1, 1, 365, &day)) != nullptr) {
+        res->date.fmt = PosixTransition::J;
+        res->date.j.day = static_cast<std::int_fast16_t>(day);
+      }
+    } else {
+      int day = 0;
+      if ((p = ParseInt(p, 0, 365, &day)) != nullptr) {
+        res->date.fmt = PosixTransition::N;
+        res->date.n.day = static_cast<std::int_fast16_t>(day);
+      }
+    }
+  }
+  if (p != nullptr) {
+    res->time.offset = 2 * 60 * 60;  // default offset is 02:00:00
+    if (*p == '/') p = ParseOffset(p + 1, -167, 167, 1, &res->time.offset);
+  }
+  return p;
+}
+
+}  // namespace
+
+// spec = std offset [ dst [ offset ] , datetime , datetime ]
+bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res) {
+  const char* p = spec.c_str();
+  if (*p == ':') return false;
+
+  p = ParseAbbr(p, &res->std_abbr);
+  p = ParseOffset(p, 0, 24, -1, &res->std_offset);
+  if (p == nullptr) return false;
+  if (*p == '\0') return true;
+
+  p = ParseAbbr(p, &res->dst_abbr);
+  if (p == nullptr) return false;
+  res->dst_offset = res->std_offset + (60 * 60);  // default
+  if (*p != ',') p = ParseOffset(p, 0, 24, -1, &res->dst_offset);
+
+  p = ParseDateTime(p, &res->dst_start);
+  p = ParseDateTime(p, &res->dst_end);
+
+  return p != nullptr && *p == '\0';
+}
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.h
new file mode 100644
index 0000000..0cf2905
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/time_zone_posix.h	
@@ -0,0 +1,132 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+// Parsing of a POSIX zone spec as described in the TZ part of section 8.3 in
+// http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html.
+//
+// The current POSIX spec for America/Los_Angeles is "PST8PDT,M3.2.0,M11.1.0",
+// which would be broken down as ...
+//
+//   PosixTimeZone {
+//     std_abbr = "PST"
+//     std_offset = -28800
+//     dst_abbr = "PDT"
+//     dst_offset = -25200
+//     dst_start = PosixTransition {
+//       date {
+//         m {
+//           month = 3
+//           week = 2
+//           weekday = 0
+//         }
+//       }
+//       time {
+//         offset = 7200
+//       }
+//     }
+//     dst_end = PosixTransition {
+//       date {
+//         m {
+//           month = 11
+//           week = 1
+//           weekday = 0
+//         }
+//       }
+//       time {
+//         offset = 7200
+//       }
+//     }
+//   }
+
+#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
+#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
+
+#include <cstdint>
+#include <string>
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// The date/time of the transition. The date is specified as either:
+// (J) the Nth day of the year (1 <= N <= 365), excluding leap days, or
+// (N) the Nth day of the year (0 <= N <= 365), including leap days, or
+// (M) the Nth weekday of a month (e.g., the 2nd Sunday in March).
+// The time, specified as a day offset, identifies the particular moment
+// of the transition, and may be negative or >= 24h, and in which case
+// it would take us to another day, and perhaps week, or even month.
+struct PosixTransition {
+  enum DateFormat { J, N, M };
+
+  struct Date {
+    struct NonLeapDay {
+      std::int_fast16_t day;  // day of non-leap year [1:365]
+    };
+    struct Day {
+      std::int_fast16_t day;  // day of year [0:365]
+    };
+    struct MonthWeekWeekday {
+      std::int_fast8_t month;    // month of year [1:12]
+      std::int_fast8_t week;     // week of month [1:5] (5==last)
+      std::int_fast8_t weekday;  // 0==Sun, ..., 6=Sat
+    };
+
+    DateFormat fmt;
+
+    union {
+      NonLeapDay j;
+      Day n;
+      MonthWeekWeekday m;
+    };
+  };
+
+  struct Time {
+    std::int_fast32_t offset;  // seconds before/after 00:00:00
+  };
+
+  Date date;
+  Time time;
+};
+
+// The entirety of a POSIX-string specified time-zone rule. The standard
+// abbreviation and offset are always given. If the time zone includes
+// daylight saving, then the daylight abbrevation is non-empty and the
+// remaining fields are also valid. Note that the start/end transitions
+// are not ordered---in the southern hemisphere the transition to end
+// daylight time occurs first in any particular year.
+struct PosixTimeZone {
+  std::string std_abbr;
+  std::int_fast32_t std_offset;
+
+  std::string dst_abbr;
+  std::int_fast32_t dst_offset;
+  PosixTransition dst_start;
+  PosixTransition dst_end;
+};
+
+// Breaks down a POSIX time-zone specification into its constituent pieces,
+// filling in any missing values (DST offset, or start/end transition times)
+// with the standard-defined defaults. Returns false if the specification
+// could not be parsed (although some fields of *res may have been altered).
+bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res);
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/tzfile.h b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/tzfile.h
new file mode 100644
index 0000000..1ed55e0
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/tzfile.h	
@@ -0,0 +1,122 @@
+/* Layout and location of TZif files.  */
+
+#ifndef TZFILE_H
+
+#define TZFILE_H
+
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+/*
+** Information about time zone files.
+*/
+
+#ifndef TZDIR
+#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
+#endif                              /* !defined TZDIR */
+
+#ifndef TZDEFAULT
+#define TZDEFAULT "/etc/localtime"
+#endif /* !defined TZDEFAULT */
+
+#ifndef TZDEFRULES
+#define TZDEFRULES "posixrules"
+#endif /* !defined TZDEFRULES */
+
+/* See Internet RFC 8536 for more details about the following format.  */
+
+/*
+** Each file begins with. . .
+*/
+
+#define TZ_MAGIC "TZif"
+
+struct tzhead {
+  char tzh_magic[4];      /* TZ_MAGIC */
+  char tzh_version[1];    /* '\0' or '2' or '3' as of 2013 */
+  char tzh_reserved[15];  /* reserved; must be zero */
+  char tzh_ttisutcnt[4];  /* coded number of trans. time flags */
+  char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
+  char tzh_leapcnt[4];    /* coded number of leap seconds */
+  char tzh_timecnt[4];    /* coded number of transition times */
+  char tzh_typecnt[4];    /* coded number of local time types */
+  char tzh_charcnt[4];    /* coded number of abbr. chars */
+};
+
+/*
+** . . .followed by. . .
+**
+**	tzh_timecnt (char [4])s		coded transition times a la time(2)
+**	tzh_timecnt (unsigned char)s	types of local time starting at above
+**	tzh_typecnt repetitions of
+**		one (char [4])		coded UT offset in seconds
+**		one (unsigned char)	used to set tm_isdst
+**		one (unsigned char)	that's an abbreviation list index
+**	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
+**	tzh_leapcnt repetitions of
+**		one (char [4])		coded leap second transition times
+**		one (char [4])		total correction after above
+**	tzh_ttisstdcnt (char)s		indexed by type; if 1, transition
+**					time is standard time, if 0,
+**					transition time is local (wall clock)
+**					time; if absent, transition times are
+**					assumed to be local time
+**	tzh_ttisutcnt (char)s		indexed by type; if 1, transition
+**					time is UT, if 0, transition time is
+**					local time; if absent, transition
+**					times are assumed to be local time.
+**					When this is 1, the corresponding
+**					std/wall indicator must also be 1.
+*/
+
+/*
+** If tzh_version is '2' or greater, the above is followed by a second instance
+** of tzhead and a second instance of the data in which each coded transition
+** time uses 8 rather than 4 chars,
+** then a POSIX-TZ-environment-variable-style std::string for use in handling
+** instants after the last transition time stored in the file
+** (with nothing between the newlines if there is no POSIX representation for
+** such instants).
+**
+** If tz_version is '3' or greater, the above is extended as follows.
+** First, the POSIX TZ std::string's hour offset may range from -167
+** through 167 as compared to the POSIX-required 0 through 24.
+** Second, its DST start time may be January 1 at 00:00 and its stop
+** time December 31 at 24:00 plus the difference between DST and
+** standard time, indicating DST all year.
+*/
+
+/*
+** In the current implementation, "tzset()" refuses to deal with files that
+** exceed any of the limits below.
+*/
+
+#ifndef TZ_MAX_TIMES
+#define TZ_MAX_TIMES 2000
+#endif /* !defined TZ_MAX_TIMES */
+
+#ifndef TZ_MAX_TYPES
+/* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
+#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
+#endif                   /* !defined TZ_MAX_TYPES */
+
+#ifndef TZ_MAX_CHARS
+#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
+                        /* (limited by what unsigned chars can hold) */
+#endif                  /* !defined TZ_MAX_CHARS */
+
+#ifndef TZ_MAX_LEAPS
+#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
+#endif                  /* !defined TZ_MAX_LEAPS */
+
+#endif /* !defined TZFILE_H */
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/zone_info_source.cc b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/zone_info_source.cc
new file mode 100644
index 0000000..98ea161
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/cctz/src/zone_info_source.cc	
@@ -0,0 +1,115 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   https://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+
+#include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
+
+#include "absl/base/config.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz {
+
+// Defined out-of-line to avoid emitting a weak vtable in all TUs.
+ZoneInfoSource::~ZoneInfoSource() {}
+std::string ZoneInfoSource::Version() const { return std::string(); }
+
+}  // namespace cctz
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+namespace cctz_extension {
+
+namespace {
+
+// A default for cctz_extension::zone_info_source_factory, which simply
+// defers to the fallback factory.
+std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory(
+    const std::string& name,
+    const std::function<
+        std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
+            const std::string& name)>& fallback_factory) {
+  return fallback_factory(name);
+}
+
+}  // namespace
+
+// A "weak" definition for cctz_extension::zone_info_source_factory.
+// The user may override this with their own "strong" definition (see
+// zone_info_source.h).
+#if !defined(__has_attribute)
+#define __has_attribute(x) 0
+#endif
+// MinGW is GCC on Windows, so while it asserts __has_attribute(weak), the
+// Windows linker cannot handle that. Nor does the MinGW compiler know how to
+// pass "#pragma comment(linker, ...)" to the Windows linker.
+#if (__has_attribute(weak) || defined(__GNUC__)) && !defined(__MINGW32__)
+ZoneInfoSourceFactory zone_info_source_factory __attribute__((weak)) =
+    DefaultFactory;
+#elif defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_LIBCPP_VERSION)
+extern ZoneInfoSourceFactory zone_info_source_factory;
+extern ZoneInfoSourceFactory default_factory;
+ZoneInfoSourceFactory default_factory = DefaultFactory;
+#if defined(_M_IX86)
+#pragma comment(                                                                                                         \
+    linker,                                                                                                              \
+    "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                    \
+    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                 \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
+    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
+    "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
+    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
+    "@@ZA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                                       \
+    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                 \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
+    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
+    "@ABV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                   \
+    "@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
+    "@@ZA")
+#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM64)
+#pragma comment(                                                                                                          \
+    linker,                                                                                                               \
+    "/alternatename:?zone_info_source_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                     \
+    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                  \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
+    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
+    "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
+    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
+    "@@ZEA=?default_factory@cctz_extension@time_internal@" ABSL_INTERNAL_MANGLED_NS                                       \
+    "@@3P6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                  \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
+    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@" ABSL_INTERNAL_MANGLED_BACKREFERENCE      \
+    "@AEBV?$function@$$A6A?AV?$unique_ptr@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                   \
+    "@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS                                    \
+    "@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
+    "@@ZEA")
+#else
+#error Unsupported MSVC platform
+#endif  // _M_<PLATFORM>
+#else
+// Make it a "strong" definition if we have no other choice.
+ZoneInfoSourceFactory zone_info_source_factory = DefaultFactory;
+#endif
+
+}  // namespace cctz_extension
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_chrono.inc b/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_chrono.inc
new file mode 100644
index 0000000..5eeb640
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_chrono.inc	
@@ -0,0 +1,31 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <chrono>
+#include <cstdint>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+
+static int64_t GetCurrentTimeNanosFromSystem() {
+  return std::chrono::duration_cast<std::chrono::nanoseconds>(
+             std::chrono::system_clock::now() -
+             std::chrono::system_clock::from_time_t(0))
+      .count();
+}
+
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_posix.inc b/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_posix.inc
new file mode 100644
index 0000000..4207200
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/internal/get_current_time_posix.inc	
@@ -0,0 +1,24 @@
+#include "absl/time/clock.h"
+
+#include <sys/time.h>
+#include <ctime>
+#include <cstdint>
+
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace time_internal {
+
+static int64_t GetCurrentTimeNanosFromSystem() {
+  const int64_t kNanosPerSecond = 1000 * 1000 * 1000;
+  struct timespec ts;
+  ABSL_RAW_CHECK(clock_gettime(CLOCK_REALTIME, &ts) == 0,
+                 "Failed to read real-time clock.");
+  return (int64_t{ts.tv_sec} * kNanosPerSecond +
+          int64_t{ts.tv_nsec});
+}
+
+}  // namespace time_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/time.cc b/ChattingApp 000/Pods/abseil/absl/time/time.cc
new file mode 100644
index 0000000..6bb36cb
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/time.cc	
@@ -0,0 +1,499 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The implementation of the absl::Time class, which is declared in
+// //absl/time.h.
+//
+// The representation for an absl::Time is an absl::Duration offset from the
+// epoch.  We use the traditional Unix epoch (1970-01-01 00:00:00 +0000)
+// for convenience, but this is not exposed in the API and could be changed.
+//
+// NOTE: To keep type verbosity to a minimum, the following variable naming
+// conventions are used throughout this file.
+//
+// tz: An absl::TimeZone
+// ci: An absl::TimeZone::CivilInfo
+// ti: An absl::TimeZone::TimeInfo
+// cd: An absl::CivilDay or a cctz::civil_day
+// cs: An absl::CivilSecond or a cctz::civil_second
+// bd: An absl::Time::Breakdown
+// cl: A cctz::time_zone::civil_lookup
+// al: A cctz::time_zone::absolute_lookup
+
+#include "absl/time/time.h"
+
+#if defined(_MSC_VER)
+#include <winsock2.h>  // for timeval
+#endif
+
+#include <cstring>
+#include <ctime>
+#include <limits>
+
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+namespace cctz = absl::time_internal::cctz;
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace {
+
+inline cctz::time_point<cctz::seconds> unix_epoch() {
+  return std::chrono::time_point_cast<cctz::seconds>(
+      std::chrono::system_clock::from_time_t(0));
+}
+
+// Floors d to the next unit boundary closer to negative infinity.
+inline int64_t FloorToUnit(absl::Duration d, absl::Duration unit) {
+  absl::Duration rem;
+  int64_t q = absl::IDivDuration(d, unit, &rem);
+  return (q > 0 ||
+          rem >= ZeroDuration() ||
+          q == std::numeric_limits<int64_t>::min()) ? q : q - 1;
+}
+
+inline absl::Time::Breakdown InfiniteFutureBreakdown() {
+  absl::Time::Breakdown bd;
+  bd.year = std::numeric_limits<int64_t>::max();
+  bd.month = 12;
+  bd.day = 31;
+  bd.hour = 23;
+  bd.minute = 59;
+  bd.second = 59;
+  bd.subsecond = absl::InfiniteDuration();
+  bd.weekday = 4;
+  bd.yearday = 365;
+  bd.offset = 0;
+  bd.is_dst = false;
+  bd.zone_abbr = "-00";
+  return bd;
+}
+
+inline absl::Time::Breakdown InfinitePastBreakdown() {
+  Time::Breakdown bd;
+  bd.year = std::numeric_limits<int64_t>::min();
+  bd.month = 1;
+  bd.day = 1;
+  bd.hour = 0;
+  bd.minute = 0;
+  bd.second = 0;
+  bd.subsecond = -absl::InfiniteDuration();
+  bd.weekday = 7;
+  bd.yearday = 1;
+  bd.offset = 0;
+  bd.is_dst = false;
+  bd.zone_abbr = "-00";
+  return bd;
+}
+
+inline absl::TimeZone::CivilInfo InfiniteFutureCivilInfo() {
+  TimeZone::CivilInfo ci;
+  ci.cs = CivilSecond::max();
+  ci.subsecond = InfiniteDuration();
+  ci.offset = 0;
+  ci.is_dst = false;
+  ci.zone_abbr = "-00";
+  return ci;
+}
+
+inline absl::TimeZone::CivilInfo InfinitePastCivilInfo() {
+  TimeZone::CivilInfo ci;
+  ci.cs = CivilSecond::min();
+  ci.subsecond = -InfiniteDuration();
+  ci.offset = 0;
+  ci.is_dst = false;
+  ci.zone_abbr = "-00";
+  return ci;
+}
+
+inline absl::TimeConversion InfiniteFutureTimeConversion() {
+  absl::TimeConversion tc;
+  tc.pre = tc.trans = tc.post = absl::InfiniteFuture();
+  tc.kind = absl::TimeConversion::UNIQUE;
+  tc.normalized = true;
+  return tc;
+}
+
+inline TimeConversion InfinitePastTimeConversion() {
+  absl::TimeConversion tc;
+  tc.pre = tc.trans = tc.post = absl::InfinitePast();
+  tc.kind = absl::TimeConversion::UNIQUE;
+  tc.normalized = true;
+  return tc;
+}
+
+// Makes a Time from sec, overflowing to InfiniteFuture/InfinitePast as
+// necessary. If sec is min/max, then consult cs+tz to check for overlow.
+Time MakeTimeWithOverflow(const cctz::time_point<cctz::seconds>& sec,
+                          const cctz::civil_second& cs,
+                          const cctz::time_zone& tz,
+                          bool* normalized = nullptr) {
+  const auto max = cctz::time_point<cctz::seconds>::max();
+  const auto min = cctz::time_point<cctz::seconds>::min();
+  if (sec == max) {
+    const auto al = tz.lookup(max);
+    if (cs > al.cs) {
+      if (normalized) *normalized = true;
+      return absl::InfiniteFuture();
+    }
+  }
+  if (sec == min) {
+    const auto al = tz.lookup(min);
+    if (cs < al.cs) {
+      if (normalized) *normalized = true;
+      return absl::InfinitePast();
+    }
+  }
+  const auto hi = (sec - unix_epoch()).count();
+  return time_internal::FromUnixDuration(time_internal::MakeDuration(hi));
+}
+
+// Returns Mon=1..Sun=7.
+inline int MapWeekday(const cctz::weekday& wd) {
+  switch (wd) {
+    case cctz::weekday::monday:
+      return 1;
+    case cctz::weekday::tuesday:
+      return 2;
+    case cctz::weekday::wednesday:
+      return 3;
+    case cctz::weekday::thursday:
+      return 4;
+    case cctz::weekday::friday:
+      return 5;
+    case cctz::weekday::saturday:
+      return 6;
+    case cctz::weekday::sunday:
+      return 7;
+  }
+  return 1;
+}
+
+bool FindTransition(const cctz::time_zone& tz,
+                    bool (cctz::time_zone::*find_transition)(
+                        const cctz::time_point<cctz::seconds>& tp,
+                        cctz::time_zone::civil_transition* trans) const,
+                    Time t, TimeZone::CivilTransition* trans) {
+  // Transitions are second-aligned, so we can discard any fractional part.
+  const auto tp = unix_epoch() + cctz::seconds(ToUnixSeconds(t));
+  cctz::time_zone::civil_transition tr;
+  if (!(tz.*find_transition)(tp, &tr)) return false;
+  trans->from = CivilSecond(tr.from);
+  trans->to = CivilSecond(tr.to);
+  return true;
+}
+
+}  // namespace
+
+//
+// Time
+//
+
+absl::Time::Breakdown Time::In(absl::TimeZone tz) const {
+  if (*this == absl::InfiniteFuture()) return InfiniteFutureBreakdown();
+  if (*this == absl::InfinitePast()) return InfinitePastBreakdown();
+
+  const auto tp = unix_epoch() + cctz::seconds(time_internal::GetRepHi(rep_));
+  const auto al = cctz::time_zone(tz).lookup(tp);
+  const auto cs = al.cs;
+  const auto cd = cctz::civil_day(cs);
+
+  absl::Time::Breakdown bd;
+  bd.year = cs.year();
+  bd.month = cs.month();
+  bd.day = cs.day();
+  bd.hour = cs.hour();
+  bd.minute = cs.minute();
+  bd.second = cs.second();
+  bd.subsecond = time_internal::MakeDuration(0, time_internal::GetRepLo(rep_));
+  bd.weekday = MapWeekday(cctz::get_weekday(cd));
+  bd.yearday = cctz::get_yearday(cd);
+  bd.offset = al.offset;
+  bd.is_dst = al.is_dst;
+  bd.zone_abbr = al.abbr;
+  return bd;
+}
+
+//
+// Conversions from/to other time types.
+//
+
+absl::Time FromUDate(double udate) {
+  return time_internal::FromUnixDuration(absl::Milliseconds(udate));
+}
+
+absl::Time FromUniversal(int64_t universal) {
+  return absl::UniversalEpoch() + 100 * absl::Nanoseconds(universal);
+}
+
+int64_t ToUnixNanos(Time t) {
+  if (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >= 0 &&
+      time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >> 33 == 0) {
+    return (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) *
+            1000 * 1000 * 1000) +
+           (time_internal::GetRepLo(time_internal::ToUnixDuration(t)) / 4);
+  }
+  return FloorToUnit(time_internal::ToUnixDuration(t), absl::Nanoseconds(1));
+}
+
+int64_t ToUnixMicros(Time t) {
+  if (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >= 0 &&
+      time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >> 43 == 0) {
+    return (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) *
+            1000 * 1000) +
+           (time_internal::GetRepLo(time_internal::ToUnixDuration(t)) / 4000);
+  }
+  return FloorToUnit(time_internal::ToUnixDuration(t), absl::Microseconds(1));
+}
+
+int64_t ToUnixMillis(Time t) {
+  if (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >= 0 &&
+      time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >> 53 == 0) {
+    return (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) * 1000) +
+           (time_internal::GetRepLo(time_internal::ToUnixDuration(t)) /
+            (4000 * 1000));
+  }
+  return FloorToUnit(time_internal::ToUnixDuration(t), absl::Milliseconds(1));
+}
+
+int64_t ToUnixSeconds(Time t) {
+  return time_internal::GetRepHi(time_internal::ToUnixDuration(t));
+}
+
+time_t ToTimeT(Time t) { return absl::ToTimespec(t).tv_sec; }
+
+double ToUDate(Time t) {
+  return absl::FDivDuration(time_internal::ToUnixDuration(t),
+                            absl::Milliseconds(1));
+}
+
+int64_t ToUniversal(absl::Time t) {
+  return absl::FloorToUnit(t - absl::UniversalEpoch(), absl::Nanoseconds(100));
+}
+
+absl::Time TimeFromTimespec(timespec ts) {
+  return time_internal::FromUnixDuration(absl::DurationFromTimespec(ts));
+}
+
+absl::Time TimeFromTimeval(timeval tv) {
+  return time_internal::FromUnixDuration(absl::DurationFromTimeval(tv));
+}
+
+timespec ToTimespec(Time t) {
+  timespec ts;
+  absl::Duration d = time_internal::ToUnixDuration(t);
+  if (!time_internal::IsInfiniteDuration(d)) {
+    ts.tv_sec = time_internal::GetRepHi(d);
+    if (ts.tv_sec == time_internal::GetRepHi(d)) {  // no time_t narrowing
+      ts.tv_nsec = time_internal::GetRepLo(d) / 4;  // floor
+      return ts;
+    }
+  }
+  if (d >= absl::ZeroDuration()) {
+    ts.tv_sec = std::numeric_limits<time_t>::max();
+    ts.tv_nsec = 1000 * 1000 * 1000 - 1;
+  } else {
+    ts.tv_sec = std::numeric_limits<time_t>::min();
+    ts.tv_nsec = 0;
+  }
+  return ts;
+}
+
+timeval ToTimeval(Time t) {
+  timeval tv;
+  timespec ts = absl::ToTimespec(t);
+  tv.tv_sec = ts.tv_sec;
+  if (tv.tv_sec != ts.tv_sec) {  // narrowing
+    if (ts.tv_sec < 0) {
+      tv.tv_sec = std::numeric_limits<decltype(tv.tv_sec)>::min();
+      tv.tv_usec = 0;
+    } else {
+      tv.tv_sec = std::numeric_limits<decltype(tv.tv_sec)>::max();
+      tv.tv_usec = 1000 * 1000 - 1;
+    }
+    return tv;
+  }
+  tv.tv_usec = static_cast<int>(ts.tv_nsec / 1000);  // suseconds_t
+  return tv;
+}
+
+Time FromChrono(const std::chrono::system_clock::time_point& tp) {
+  return time_internal::FromUnixDuration(time_internal::FromChrono(
+      tp - std::chrono::system_clock::from_time_t(0)));
+}
+
+std::chrono::system_clock::time_point ToChronoTime(absl::Time t) {
+  using D = std::chrono::system_clock::duration;
+  auto d = time_internal::ToUnixDuration(t);
+  if (d < ZeroDuration()) d = Floor(d, FromChrono(D{1}));
+  return std::chrono::system_clock::from_time_t(0) +
+         time_internal::ToChronoDuration<D>(d);
+}
+
+//
+// TimeZone
+//
+
+absl::TimeZone::CivilInfo TimeZone::At(Time t) const {
+  if (t == absl::InfiniteFuture()) return InfiniteFutureCivilInfo();
+  if (t == absl::InfinitePast()) return InfinitePastCivilInfo();
+
+  const auto ud = time_internal::ToUnixDuration(t);
+  const auto tp = unix_epoch() + cctz::seconds(time_internal::GetRepHi(ud));
+  const auto al = cz_.lookup(tp);
+
+  TimeZone::CivilInfo ci;
+  ci.cs = CivilSecond(al.cs);
+  ci.subsecond = time_internal::MakeDuration(0, time_internal::GetRepLo(ud));
+  ci.offset = al.offset;
+  ci.is_dst = al.is_dst;
+  ci.zone_abbr = al.abbr;
+  return ci;
+}
+
+absl::TimeZone::TimeInfo TimeZone::At(CivilSecond ct) const {
+  const cctz::civil_second cs(ct);
+  const auto cl = cz_.lookup(cs);
+
+  TimeZone::TimeInfo ti;
+  switch (cl.kind) {
+    case cctz::time_zone::civil_lookup::UNIQUE:
+      ti.kind = TimeZone::TimeInfo::UNIQUE;
+      break;
+    case cctz::time_zone::civil_lookup::SKIPPED:
+      ti.kind = TimeZone::TimeInfo::SKIPPED;
+      break;
+    case cctz::time_zone::civil_lookup::REPEATED:
+      ti.kind = TimeZone::TimeInfo::REPEATED;
+      break;
+  }
+  ti.pre = MakeTimeWithOverflow(cl.pre, cs, cz_);
+  ti.trans = MakeTimeWithOverflow(cl.trans, cs, cz_);
+  ti.post = MakeTimeWithOverflow(cl.post, cs, cz_);
+  return ti;
+}
+
+bool TimeZone::NextTransition(Time t, CivilTransition* trans) const {
+  return FindTransition(cz_, &cctz::time_zone::next_transition, t, trans);
+}
+
+bool TimeZone::PrevTransition(Time t, CivilTransition* trans) const {
+  return FindTransition(cz_, &cctz::time_zone::prev_transition, t, trans);
+}
+
+//
+// Conversions involving time zones.
+//
+
+absl::TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour,
+                                     int min, int sec, TimeZone tz) {
+  // Avoids years that are too extreme for CivilSecond to normalize.
+  if (year > 300000000000) return InfiniteFutureTimeConversion();
+  if (year < -300000000000) return InfinitePastTimeConversion();
+
+  const CivilSecond cs(year, mon, day, hour, min, sec);
+  const auto ti = tz.At(cs);
+
+  TimeConversion tc;
+  tc.pre = ti.pre;
+  tc.trans = ti.trans;
+  tc.post = ti.post;
+  switch (ti.kind) {
+    case TimeZone::TimeInfo::UNIQUE:
+      tc.kind = TimeConversion::UNIQUE;
+      break;
+    case TimeZone::TimeInfo::SKIPPED:
+      tc.kind = TimeConversion::SKIPPED;
+      break;
+    case TimeZone::TimeInfo::REPEATED:
+      tc.kind = TimeConversion::REPEATED;
+      break;
+  }
+  tc.normalized = false;
+  if (year != cs.year() || mon != cs.month() || day != cs.day() ||
+      hour != cs.hour() || min != cs.minute() || sec != cs.second()) {
+    tc.normalized = true;
+  }
+  return tc;
+}
+
+absl::Time FromTM(const struct tm& tm, absl::TimeZone tz) {
+  civil_year_t tm_year = tm.tm_year;
+  // Avoids years that are too extreme for CivilSecond to normalize.
+  if (tm_year > 300000000000ll) return InfiniteFuture();
+  if (tm_year < -300000000000ll) return InfinitePast();
+  int tm_mon = tm.tm_mon;
+  if (tm_mon == std::numeric_limits<int>::max()) {
+    tm_mon -= 12;
+    tm_year += 1;
+  }
+  const auto ti = tz.At(CivilSecond(tm_year + 1900, tm_mon + 1, tm.tm_mday,
+                                    tm.tm_hour, tm.tm_min, tm.tm_sec));
+  return tm.tm_isdst == 0 ? ti.post : ti.pre;
+}
+
+struct tm ToTM(absl::Time t, absl::TimeZone tz) {
+  struct tm tm = {};
+
+  const auto ci = tz.At(t);
+  const auto& cs = ci.cs;
+  tm.tm_sec = cs.second();
+  tm.tm_min = cs.minute();
+  tm.tm_hour = cs.hour();
+  tm.tm_mday = cs.day();
+  tm.tm_mon = cs.month() - 1;
+
+  // Saturates tm.tm_year in cases of over/underflow, accounting for the fact
+  // that tm.tm_year is years since 1900.
+  if (cs.year() < std::numeric_limits<int>::min() + 1900) {
+    tm.tm_year = std::numeric_limits<int>::min();
+  } else if (cs.year() > std::numeric_limits<int>::max()) {
+    tm.tm_year = std::numeric_limits<int>::max() - 1900;
+  } else {
+    tm.tm_year = static_cast<int>(cs.year() - 1900);
+  }
+
+  switch (GetWeekday(cs)) {
+    case Weekday::sunday:
+      tm.tm_wday = 0;
+      break;
+    case Weekday::monday:
+      tm.tm_wday = 1;
+      break;
+    case Weekday::tuesday:
+      tm.tm_wday = 2;
+      break;
+    case Weekday::wednesday:
+      tm.tm_wday = 3;
+      break;
+    case Weekday::thursday:
+      tm.tm_wday = 4;
+      break;
+    case Weekday::friday:
+      tm.tm_wday = 5;
+      break;
+    case Weekday::saturday:
+      tm.tm_wday = 6;
+      break;
+  }
+  tm.tm_yday = GetYearDay(cs) - 1;
+  tm.tm_isdst = ci.is_dst ? 1 : 0;
+
+  return tm;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/ChattingApp 000/Pods/abseil/absl/time/time.h b/ChattingApp 000/Pods/abseil/absl/time/time.h
new file mode 100644
index 0000000..33a4a63
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/time/time.h	
@@ -0,0 +1,1584 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: time.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines abstractions for computing with absolute points
+// in time, durations of time, and formatting and parsing time within a given
+// time zone. The following abstractions are defined:
+//
+//  * `absl::Time` defines an absolute, specific instance in time
+//  * `absl::Duration` defines a signed, fixed-length span of time
+//  * `absl::TimeZone` defines geopolitical time zone regions (as collected
+//     within the IANA Time Zone database (https://www.iana.org/time-zones)).
+//
+// Note: Absolute times are distinct from civil times, which refer to the
+// human-scale time commonly represented by `YYYY-MM-DD hh:mm:ss`. The mapping
+// between absolute and civil times can be specified by use of time zones
+// (`absl::TimeZone` within this API). That is:
+//
+//   Civil Time = F(Absolute Time, Time Zone)
+//   Absolute Time = G(Civil Time, Time Zone)
+//
+// See civil_time.h for abstractions related to constructing and manipulating
+// civil time.
+//
+// Example:
+//
+//   absl::TimeZone nyc;
+//   // LoadTimeZone() may fail so it's always better to check for success.
+//   if (!absl::LoadTimeZone("America/New_York", &nyc)) {
+//      // handle error case
+//   }
+//
+//   // My flight leaves NYC on Jan 2, 2017 at 03:04:05
+//   absl::CivilSecond cs(2017, 1, 2, 3, 4, 5);
+//   absl::Time takeoff = absl::FromCivil(cs, nyc);
+//
+//   absl::Duration flight_duration = absl::Hours(21) + absl::Minutes(35);
+//   absl::Time landing = takeoff + flight_duration;
+//
+//   absl::TimeZone syd;
+//   if (!absl::LoadTimeZone("Australia/Sydney", &syd)) {
+//      // handle error case
+//   }
+//   std::string s = absl::FormatTime(
+//       "My flight will land in Sydney on %Y-%m-%d at %H:%M:%S",
+//       landing, syd);
+
+#ifndef ABSL_TIME_TIME_H_
+#define ABSL_TIME_TIME_H_
+
+#if !defined(_MSC_VER)
+#include <sys/time.h>
+#else
+// We don't include `winsock2.h` because it drags in `windows.h` and friends,
+// and they define conflicting macros like OPAQUE, ERROR, and more. This has the
+// potential to break Abseil users.
+//
+// Instead we only forward declare `timeval` and require Windows users include
+// `winsock2.h` themselves. This is both inconsistent and troublesome, but so is
+// including 'windows.h' so we are picking the lesser of two evils here.
+struct timeval;
+#endif
+#include <chrono>  // NOLINT(build/c++11)
+#include <cmath>
+#include <cstdint>
+#include <ctime>
+#include <ostream>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/strings/string_view.h"
+#include "absl/time/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+class Duration;  // Defined below
+class Time;      // Defined below
+class TimeZone;  // Defined below
+
+namespace time_internal {
+int64_t IDivDuration(bool satq, Duration num, Duration den, Duration* rem);
+constexpr Time FromUnixDuration(Duration d);
+constexpr Duration ToUnixDuration(Time t);
+constexpr int64_t GetRepHi(Duration d);
+constexpr uint32_t GetRepLo(Duration d);
+constexpr Duration MakeDuration(int64_t hi, uint32_t lo);
+constexpr Duration MakeDuration(int64_t hi, int64_t lo);
+inline Duration MakePosDoubleDuration(double n);
+constexpr int64_t kTicksPerNanosecond = 4;
+constexpr int64_t kTicksPerSecond = 1000 * 1000 * 1000 * kTicksPerNanosecond;
+template <std::intmax_t N>
+constexpr Duration FromInt64(int64_t v, std::ratio<1, N>);
+constexpr Duration FromInt64(int64_t v, std::ratio<60>);
+constexpr Duration FromInt64(int64_t v, std::ratio<3600>);
+template <typename T>
+using EnableIfIntegral = typename std::enable_if<
+    std::is_integral<T>::value || std::is_enum<T>::value, int>::type;
+template <typename T>
+using EnableIfFloat =
+    typename std::enable_if<std::is_floating_point<T>::value, int>::type;
+}  // namespace time_internal
+
+// Duration
+//
+// The `absl::Duration` class represents a signed, fixed-length span of time.
+// A `Duration` is generated using a unit-specific factory function, or is
+// the result of subtracting one `absl::Time` from another. Durations behave
+// like unit-safe integers and they support all the natural integer-like
+// arithmetic operations. Arithmetic overflows and saturates at +/- infinity.
+// `Duration` should be passed by value rather than const reference.
+//
+// Factory functions `Nanoseconds()`, `Microseconds()`, `Milliseconds()`,
+// `Seconds()`, `Minutes()`, `Hours()` and `InfiniteDuration()` allow for
+// creation of constexpr `Duration` values
+//
+// Examples:
+//
+//   constexpr absl::Duration ten_ns = absl::Nanoseconds(10);
+//   constexpr absl::Duration min = absl::Minutes(1);
+//   constexpr absl::Duration hour = absl::Hours(1);
+//   absl::Duration dur = 60 * min;  // dur == hour
+//   absl::Duration half_sec = absl::Milliseconds(500);
+//   absl::Duration quarter_sec = 0.25 * absl::Seconds(1);
+//
+// `Duration` values can be easily converted to an integral number of units
+// using the division operator.
+//
+// Example:
+//
+//   constexpr absl::Duration dur = absl::Milliseconds(1500);
+//   int64_t ns = dur / absl::Nanoseconds(1);   // ns == 1500000000
+//   int64_t ms = dur / absl::Milliseconds(1);  // ms == 1500
+//   int64_t sec = dur / absl::Seconds(1);    // sec == 1 (subseconds truncated)
+//   int64_t min = dur / absl::Minutes(1);    // min == 0
+//
+// See the `IDivDuration()` and `FDivDuration()` functions below for details on
+// how to access the fractional parts of the quotient.
+//
+// Alternatively, conversions can be performed using helpers such as
+// `ToInt64Microseconds()` and `ToDoubleSeconds()`.
+class Duration {
+ public:
+  // Value semantics.
+  constexpr Duration() : rep_hi_(0), rep_lo_(0) {}  // zero-length duration
+
+  // Copyable.
+#if !defined(__clang__) && defined(_MSC_VER) && _MSC_VER < 1910
+  // Explicitly defining the constexpr copy constructor avoids an MSVC bug.
+  constexpr Duration(const Duration& d)
+      : rep_hi_(d.rep_hi_), rep_lo_(d.rep_lo_) {}
+#else
+  constexpr Duration(const Duration& d) = default;
+#endif
+  Duration& operator=(const Duration& d) = default;
+
+  // Compound assignment operators.
+  Duration& operator+=(Duration d);
+  Duration& operator-=(Duration d);
+  Duration& operator*=(int64_t r);
+  Duration& operator*=(double r);
+  Duration& operator/=(int64_t r);
+  Duration& operator/=(double r);
+  Duration& operator%=(Duration rhs);
+
+  // Overloads that forward to either the int64_t or double overloads above.
+  // Integer operands must be representable as int64_t.
+  template <typename T>
+  Duration& operator*=(T r) {
+    int64_t x = r;
+    return *this *= x;
+  }
+  template <typename T>
+  Duration& operator/=(T r) {
+    int64_t x = r;
+    return *this /= x;
+  }
+  Duration& operator*=(float r) { return *this *= static_cast<double>(r); }
+  Duration& operator/=(float r) { return *this /= static_cast<double>(r); }
+
+  template <typename H>
+  friend H AbslHashValue(H h, Duration d) {
+    return H::combine(std::move(h), d.rep_hi_, d.rep_lo_);
+  }
+
+ private:
+  friend constexpr int64_t time_internal::GetRepHi(Duration d);
+  friend constexpr uint32_t time_internal::GetRepLo(Duration d);
+  friend constexpr Duration time_internal::MakeDuration(int64_t hi,
+                                                        uint32_t lo);
+  constexpr Duration(int64_t hi, uint32_t lo) : rep_hi_(hi), rep_lo_(lo) {}
+  int64_t rep_hi_;
+  uint32_t rep_lo_;
+};
+
+// Relational Operators
+constexpr bool operator<(Duration lhs, Duration rhs);
+constexpr bool operator>(Duration lhs, Duration rhs) { return rhs < lhs; }
+constexpr bool operator>=(Duration lhs, Duration rhs) { return !(lhs < rhs); }
+constexpr bool operator<=(Duration lhs, Duration rhs) { return !(rhs < lhs); }
+constexpr bool operator==(Duration lhs, Duration rhs);
+constexpr bool operator!=(Duration lhs, Duration rhs) { return !(lhs == rhs); }
+
+// Additive Operators
+constexpr Duration operator-(Duration d);
+inline Duration operator+(Duration lhs, Duration rhs) { return lhs += rhs; }
+inline Duration operator-(Duration lhs, Duration rhs) { return lhs -= rhs; }
+
+// Multiplicative Operators
+// Integer operands must be representable as int64_t.
+template <typename T>
+Duration operator*(Duration lhs, T rhs) {
+  return lhs *= rhs;
+}
+template <typename T>
+Duration operator*(T lhs, Duration rhs) {
+  return rhs *= lhs;
+}
+template <typename T>
+Duration operator/(Duration lhs, T rhs) {
+  return lhs /= rhs;
+}
+inline int64_t operator/(Duration lhs, Duration rhs) {
+  return time_internal::IDivDuration(true, lhs, rhs,
+                                     &lhs);  // trunc towards zero
+}
+inline Duration operator%(Duration lhs, Duration rhs) { return lhs %= rhs; }
+
+// IDivDuration()
+//
+// Divides a numerator `Duration` by a denominator `Duration`, returning the
+// quotient and remainder. The remainder always has the same sign as the
+// numerator. The returned quotient and remainder respect the identity:
+//
+//   numerator = denominator * quotient + remainder
+//
+// Returned quotients are capped to the range of `int64_t`, with the difference
+// spilling into the remainder to uphold the above identity. This means that the
+// remainder returned could differ from the remainder returned by
+// `Duration::operator%` for huge quotients.
+//
+// See also the notes on `InfiniteDuration()` below regarding the behavior of
+// division involving zero and infinite durations.
+//
+// Example:
+//
+//   constexpr absl::Duration a =
+//       absl::Seconds(std::numeric_limits<int64_t>::max());  // big
+//   constexpr absl::Duration b = absl::Nanoseconds(1);       // small
+//
+//   absl::Duration rem = a % b;
+//   // rem == absl::ZeroDuration()
+//
+//   // Here, q would overflow int64_t, so rem accounts for the difference.
+//   int64_t q = absl::IDivDuration(a, b, &rem);
+//   // q == std::numeric_limits<int64_t>::max(), rem == a - b * q
+inline int64_t IDivDuration(Duration num, Duration den, Duration* rem) {
+  return time_internal::IDivDuration(true, num, den,
+                                     rem);  // trunc towards zero
+}
+
+// FDivDuration()
+//
+// Divides a `Duration` numerator into a fractional number of units of a
+// `Duration` denominator.
+//
+// See also the notes on `InfiniteDuration()` below regarding the behavior of
+// division involving zero and infinite durations.
+//
+// Example:
+//
+//   double d = absl::FDivDuration(absl::Milliseconds(1500), absl::Seconds(1));
+//   // d == 1.5
+double FDivDuration(Duration num, Duration den);
+
+// ZeroDuration()
+//
+// Returns a zero-length duration. This function behaves just like the default
+// constructor, but the name helps make the semantics clear at call sites.
+constexpr Duration ZeroDuration() { return Duration(); }
+
+// AbsDuration()
+//
+// Returns the absolute value of a duration.
+inline Duration AbsDuration(Duration d) {
+  return (d < ZeroDuration()) ? -d : d;
+}
+
+// Trunc()
+//
+// Truncates a duration (toward zero) to a multiple of a non-zero unit.
+//
+// Example:
+//
+//   absl::Duration d = absl::Nanoseconds(123456789);
+//   absl::Duration a = absl::Trunc(d, absl::Microseconds(1));  // 123456us
+Duration Trunc(Duration d, Duration unit);
+
+// Floor()
+//
+// Floors a duration using the passed duration unit to its largest value not
+// greater than the duration.
+//
+// Example:
+//
+//   absl::Duration d = absl::Nanoseconds(123456789);
+//   absl::Duration b = absl::Floor(d, absl::Microseconds(1));  // 123456us
+Duration Floor(Duration d, Duration unit);
+
+// Ceil()
+//
+// Returns the ceiling of a duration using the passed duration unit to its
+// smallest value not less than the duration.
+//
+// Example:
+//
+//   absl::Duration d = absl::Nanoseconds(123456789);
+//   absl::Duration c = absl::Ceil(d, absl::Microseconds(1));   // 123457us
+Duration Ceil(Duration d, Duration unit);
+
+// InfiniteDuration()
+//
+// Returns an infinite `Duration`.  To get a `Duration` representing negative
+// infinity, use `-InfiniteDuration()`.
+//
+// Duration arithmetic overflows to +/- infinity and saturates. In general,
+// arithmetic with `Duration` infinities is similar to IEEE 754 infinities
+// except where IEEE 754 NaN would be involved, in which case +/-
+// `InfiniteDuration()` is used in place of a "nan" Duration.
+//
+// Examples:
+//
+//   constexpr absl::Duration inf = absl::InfiniteDuration();
+//   const absl::Duration d = ... any finite duration ...
+//
+//   inf == inf + inf
+//   inf == inf + d
+//   inf == inf - inf
+//   -inf == d - inf
+//
+//   inf == d * 1e100
+//   inf == inf / 2
+//   0 == d / inf
+//   INT64_MAX == inf / d
+//
+//   d < inf
+//   -inf < d
+//
+//   // Division by zero returns infinity, or INT64_MIN/MAX where appropriate.
+//   inf == d / 0
+//   INT64_MAX == d / absl::ZeroDuration()
+//
+// The examples involving the `/` operator above also apply to `IDivDuration()`
+// and `FDivDuration()`.
+constexpr Duration InfiniteDuration();
+
+// Nanoseconds()
+// Microseconds()
+// Milliseconds()
+// Seconds()
+// Minutes()
+// Hours()
+//
+// Factory functions for constructing `Duration` values from an integral number
+// of the unit indicated by the factory function's name. The number must be
+// representable as int64_t.
+//
+// NOTE: no "Days()" factory function exists because "a day" is ambiguous.
+// Civil days are not always 24 hours long, and a 24-hour duration often does
+// not correspond with a civil day. If a 24-hour duration is needed, use
+// `absl::Hours(24)`. If you actually want a civil day, use absl::CivilDay
+// from civil_time.h.
+//
+// Example:
+//
+//   absl::Duration a = absl::Seconds(60);
+//   absl::Duration b = absl::Minutes(1);  // b == a
+constexpr Duration Nanoseconds(int64_t n);
+constexpr Duration Microseconds(int64_t n);
+constexpr Duration Milliseconds(int64_t n);
+constexpr Duration Seconds(int64_t n);
+constexpr Duration Minutes(int64_t n);
+constexpr Duration Hours(int64_t n);
+
+// Factory overloads for constructing `Duration` values from a floating-point
+// number of the unit indicated by the factory function's name. These functions
+// exist for convenience, but they are not as efficient as the integral
+// factories, which should be preferred.
+//
+// Example:
+//
+//   auto a = absl::Seconds(1.5);        // OK
+//   auto b = absl::Milliseconds(1500);  // BETTER
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Nanoseconds(T n) {
+  return n * Nanoseconds(1);
+}
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Microseconds(T n) {
+  return n * Microseconds(1);
+}
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Milliseconds(T n) {
+  return n * Milliseconds(1);
+}
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Seconds(T n) {
+  if (n >= 0) {  // Note: `NaN >= 0` is false.
+    if (n >= static_cast<T>((std::numeric_limits<int64_t>::max)())) {
+      return InfiniteDuration();
+    }
+    return time_internal::MakePosDoubleDuration(n);
+  } else {
+    if (std::isnan(n))
+      return std::signbit(n) ? -InfiniteDuration() : InfiniteDuration();
+    if (n <= (std::numeric_limits<int64_t>::min)()) return -InfiniteDuration();
+    return -time_internal::MakePosDoubleDuration(-n);
+  }
+}
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Minutes(T n) {
+  return n * Minutes(1);
+}
+template <typename T, time_internal::EnableIfFloat<T> = 0>
+Duration Hours(T n) {
+  return n * Hours(1);
+}
+
+// ToInt64Nanoseconds()
+// ToInt64Microseconds()
+// ToInt64Milliseconds()
+// ToInt64Seconds()
+// ToInt64Minutes()
+// ToInt64Hours()
+//
+// Helper functions that convert a Duration to an integral count of the
+// indicated unit. These functions are shorthand for the `IDivDuration()`
+// function above; see its documentation for details about overflow, etc.
+//
+// Example:
+//
+//   absl::Duration d = absl::Milliseconds(1500);
+//   int64_t isec = absl::ToInt64Seconds(d);  // isec == 1
+int64_t ToInt64Nanoseconds(Duration d);
+int64_t ToInt64Microseconds(Duration d);
+int64_t ToInt64Milliseconds(Duration d);
+int64_t ToInt64Seconds(Duration d);
+int64_t ToInt64Minutes(Duration d);
+int64_t ToInt64Hours(Duration d);
+
+// ToDoubleNanoSeconds()
+// ToDoubleMicroseconds()
+// ToDoubleMilliseconds()
+// ToDoubleSeconds()
+// ToDoubleMinutes()
+// ToDoubleHours()
+//
+// Helper functions that convert a Duration to a floating point count of the
+// indicated unit. These functions are shorthand for the `FDivDuration()`
+// function above; see its documentation for details about overflow, etc.
+//
+// Example:
+//
+//   absl::Duration d = absl::Milliseconds(1500);
+//   double dsec = absl::ToDoubleSeconds(d);  // dsec == 1.5
+double ToDoubleNanoseconds(Duration d);
+double ToDoubleMicroseconds(Duration d);
+double ToDoubleMilliseconds(Duration d);
+double ToDoubleSeconds(Duration d);
+double ToDoubleMinutes(Duration d);
+double ToDoubleHours(Duration d);
+
+// FromChrono()
+//
+// Converts any of the pre-defined std::chrono durations to an absl::Duration.
+//
+// Example:
+//
+//   std::chrono::milliseconds ms(123);
+//   absl::Duration d = absl::FromChrono(ms);
+constexpr Duration FromChrono(const std::chrono::nanoseconds& d);
+constexpr Duration FromChrono(const std::chrono::microseconds& d);
+constexpr Duration FromChrono(const std::chrono::milliseconds& d);
+constexpr Duration FromChrono(const std::chrono::seconds& d);
+constexpr Duration FromChrono(const std::chrono::minutes& d);
+constexpr Duration FromChrono(const std::chrono::hours& d);
+
+// ToChronoNanoseconds()
+// ToChronoMicroseconds()
+// ToChronoMilliseconds()
+// ToChronoSeconds()
+// ToChronoMinutes()
+// ToChronoHours()
+//
+// Converts an absl::Duration to any of the pre-defined std::chrono durations.
+// If overflow would occur, the returned value will saturate at the min/max
+// chrono duration value instead.
+//
+// Example:
+//
+//   absl::Duration d = absl::Microseconds(123);
+//   auto x = absl::ToChronoMicroseconds(d);
+//   auto y = absl::ToChronoNanoseconds(d);  // x == y
+//   auto z = absl::ToChronoSeconds(absl::InfiniteDuration());
+//   // z == std::chrono::seconds::max()
+std::chrono::nanoseconds ToChronoNanoseconds(Duration d);
+std::chrono::microseconds ToChronoMicroseconds(Duration d);
+std::chrono::milliseconds ToChronoMilliseconds(Duration d);
+std::chrono::seconds ToChronoSeconds(Duration d);
+std::chrono::minutes ToChronoMinutes(Duration d);
+std::chrono::hours ToChronoHours(Duration d);
+
+// FormatDuration()
+//
+// Returns a string representing the duration in the form "72h3m0.5s".
+// Returns "inf" or "-inf" for +/- `InfiniteDuration()`.
+std::string FormatDuration(Duration d);
+
+// Output stream operator.
+inline std::ostream& operator<<(std::ostream& os, Duration d) {
+  return os << FormatDuration(d);
+}
+
+// ParseDuration()
+//
+// Parses a duration string consisting of a possibly signed sequence of
+// decimal numbers, each with an optional fractional part and a unit
+// suffix.  The valid suffixes are "ns", "us" "ms", "s", "m", and "h".
+// Simple examples include "300ms", "-1.5h", and "2h45m".  Parses "0" as
+// `ZeroDuration()`. Parses "inf" and "-inf" as +/- `InfiniteDuration()`.
+bool ParseDuration(const std::string& dur_string, Duration* d);
+
+// Support for flag values of type Duration. Duration flags must be specified
+// in a format that is valid input for absl::ParseDuration().
+bool AbslParseFlag(absl::string_view text, Duration* dst, std::string* error);
+std::string AbslUnparseFlag(Duration d);
+ABSL_DEPRECATED("Use AbslParseFlag() instead.")
+bool ParseFlag(const std::string& text, Duration* dst, std::string* error);
+ABSL_DEPRECATED("Use AbslUnparseFlag() instead.")
+std::string UnparseFlag(Duration d);
+
+// Time
+//
+// An `absl::Time` represents a specific instant in time. Arithmetic operators
+// are provided for naturally expressing time calculations. Instances are
+// created using `absl::Now()` and the `absl::From*()` factory functions that
+// accept the gamut of other time representations. Formatting and parsing
+// functions are provided for conversion to and from strings.  `absl::Time`
+// should be passed by value rather than const reference.
+//
+// `absl::Time` assumes there are 60 seconds in a minute, which means the
+// underlying time scales must be "smeared" to eliminate leap seconds.
+// See https://developers.google.com/time/smear.
+//
+// Even though `absl::Time` supports a wide range of timestamps, exercise
+// caution when using values in the distant past. `absl::Time` uses the
+// Proleptic Gregorian calendar, which extends the Gregorian calendar backward
+// to dates before its introduction in 1582.
+// See https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar
+// for more information. Use the ICU calendar classes to convert a date in
+// some other calendar (http://userguide.icu-project.org/datetime/calendar).
+//
+// Similarly, standardized time zones are a reasonably recent innovation, with
+// the Greenwich prime meridian being established in 1884. The TZ database
+// itself does not profess accurate offsets for timestamps prior to 1970. The
+// breakdown of future timestamps is subject to the whim of regional
+// governments.
+//
+// The `absl::Time` class represents an instant in time as a count of clock
+// ticks of some granularity (resolution) from some starting point (epoch).
+//
+// `absl::Time` uses a resolution that is high enough to avoid loss in
+// precision, and a range that is wide enough to avoid overflow, when
+// converting between tick counts in most Google time scales (i.e., resolution
+// of at least one nanosecond, and range +/-100 billion years).  Conversions
+// between the time scales are performed by truncating (towards negative
+// infinity) to the nearest representable point.
+//
+// Examples:
+//
+//   absl::Time t1 = ...;
+//   absl::Time t2 = t1 + absl::Minutes(2);
+//   absl::Duration d = t2 - t1;  // == absl::Minutes(2)
+//
+class Time {
+ public:
+  // Value semantics.
+
+  // Returns the Unix epoch.  However, those reading your code may not know
+  // or expect the Unix epoch as the default value, so make your code more
+  // readable by explicitly initializing all instances before use.
+  //
+  // Example:
+  //   absl::Time t = absl::UnixEpoch();
+  //   absl::Time t = absl::Now();
+  //   absl::Time t = absl::TimeFromTimeval(tv);
+  //   absl::Time t = absl::InfinitePast();
+  constexpr Time() = default;
+
+  // Copyable.
+  constexpr Time(const Time& t) = default;
+  Time& operator=(const Time& t) = default;
+
+  // Assignment operators.
+  Time& operator+=(Duration d) {
+    rep_ += d;
+    return *this;
+  }
+  Time& operator-=(Duration d) {
+    rep_ -= d;
+    return *this;
+  }
+
+  // Time::Breakdown
+  //
+  // The calendar and wall-clock (aka "civil time") components of an
+  // `absl::Time` in a certain `absl::TimeZone`. This struct is not
+  // intended to represent an instant in time. So, rather than passing
+  // a `Time::Breakdown` to a function, pass an `absl::Time` and an
+  // `absl::TimeZone`.
+  //
+  // Deprecated. Use `absl::TimeZone::CivilInfo`.
+  struct
+      Breakdown {
+    int64_t year;          // year (e.g., 2013)
+    int month;           // month of year [1:12]
+    int day;             // day of month [1:31]
+    int hour;            // hour of day [0:23]
+    int minute;          // minute of hour [0:59]
+    int second;          // second of minute [0:59]
+    Duration subsecond;  // [Seconds(0):Seconds(1)) if finite
+    int weekday;         // 1==Mon, ..., 7=Sun
+    int yearday;         // day of year [1:366]
+
+    // Note: The following fields exist for backward compatibility
+    // with older APIs.  Accessing these fields directly is a sign of
+    // imprudent logic in the calling code.  Modern time-related code
+    // should only access this data indirectly by way of FormatTime().
+    // These fields are undefined for InfiniteFuture() and InfinitePast().
+    int offset;             // seconds east of UTC
+    bool is_dst;            // is offset non-standard?
+    const char* zone_abbr;  // time-zone abbreviation (e.g., "PST")
+  };
+
+  // Time::In()
+  //
+  // Returns the breakdown of this instant in the given TimeZone.
+  //
+  // Deprecated. Use `absl::TimeZone::At(Time)`.
+  Breakdown In(TimeZone tz) const;
+
+  template <typename H>
+  friend H AbslHashValue(H h, Time t) {
+    return H::combine(std::move(h), t.rep_);
+  }
+
+ private:
+  friend constexpr Time time_internal::FromUnixDuration(Duration d);
+  friend constexpr Duration time_internal::ToUnixDuration(Time t);
+  friend constexpr bool operator<(Time lhs, Time rhs);
+  friend constexpr bool operator==(Time lhs, Time rhs);
+  friend Duration operator-(Time lhs, Time rhs);
+  friend constexpr Time UniversalEpoch();
+  friend constexpr Time InfiniteFuture();
+  friend constexpr Time InfinitePast();
+  constexpr explicit Time(Duration rep) : rep_(rep) {}
+  Duration rep_;
+};
+
+// Relational Operators
+constexpr bool operator<(Time lhs, Time rhs) { return lhs.rep_ < rhs.rep_; }
+constexpr bool operator>(Time lhs, Time rhs) { return rhs < lhs; }
+constexpr bool operator>=(Time lhs, Time rhs) { return !(lhs < rhs); }
+constexpr bool operator<=(Time lhs, Time rhs) { return !(rhs < lhs); }
+constexpr bool operator==(Time lhs, Time rhs) { return lhs.rep_ == rhs.rep_; }
+constexpr bool operator!=(Time lhs, Time rhs) { return !(lhs == rhs); }
+
+// Additive Operators
+inline Time operator+(Time lhs, Duration rhs) { return lhs += rhs; }
+inline Time operator+(Duration lhs, Time rhs) { return rhs += lhs; }
+inline Time operator-(Time lhs, Duration rhs) { return lhs -= rhs; }
+inline Duration operator-(Time lhs, Time rhs) { return lhs.rep_ - rhs.rep_; }
+
+// UnixEpoch()
+//
+// Returns the `absl::Time` representing "1970-01-01 00:00:00.0 +0000".
+constexpr Time UnixEpoch() { return Time(); }
+
+// UniversalEpoch()
+//
+// Returns the `absl::Time` representing "0001-01-01 00:00:00.0 +0000", the
+// epoch of the ICU Universal Time Scale.
+constexpr Time UniversalEpoch() {
+  // 719162 is the number of days from 0001-01-01 to 1970-01-01,
+  // assuming the Gregorian calendar.
+  return Time(time_internal::MakeDuration(-24 * 719162 * int64_t{3600}, 0U));
+}
+
+// InfiniteFuture()
+//
+// Returns an `absl::Time` that is infinitely far in the future.
+constexpr Time InfiniteFuture() {
+  return Time(
+      time_internal::MakeDuration((std::numeric_limits<int64_t>::max)(), ~0U));
+}
+
+// InfinitePast()
+//
+// Returns an `absl::Time` that is infinitely far in the past.
+constexpr Time InfinitePast() {
+  return Time(
+      time_internal::MakeDuration((std::numeric_limits<int64_t>::min)(), ~0U));
+}
+
+// FromUnixNanos()
+// FromUnixMicros()
+// FromUnixMillis()
+// FromUnixSeconds()
+// FromTimeT()
+// FromUDate()
+// FromUniversal()
+//
+// Creates an `absl::Time` from a variety of other representations.
+constexpr Time FromUnixNanos(int64_t ns);
+constexpr Time FromUnixMicros(int64_t us);
+constexpr Time FromUnixMillis(int64_t ms);
+constexpr Time FromUnixSeconds(int64_t s);
+constexpr Time FromTimeT(time_t t);
+Time FromUDate(double udate);
+Time FromUniversal(int64_t universal);
+
+// ToUnixNanos()
+// ToUnixMicros()
+// ToUnixMillis()
+// ToUnixSeconds()
+// ToTimeT()
+// ToUDate()
+// ToUniversal()
+//
+// Converts an `absl::Time` to a variety of other representations.  Note that
+// these operations round down toward negative infinity where necessary to
+// adjust to the resolution of the result type.  Beware of possible time_t
+// over/underflow in ToTime{T,val,spec}() on 32-bit platforms.
+int64_t ToUnixNanos(Time t);
+int64_t ToUnixMicros(Time t);
+int64_t ToUnixMillis(Time t);
+int64_t ToUnixSeconds(Time t);
+time_t ToTimeT(Time t);
+double ToUDate(Time t);
+int64_t ToUniversal(Time t);
+
+// DurationFromTimespec()
+// DurationFromTimeval()
+// ToTimespec()
+// ToTimeval()
+// TimeFromTimespec()
+// TimeFromTimeval()
+// ToTimespec()
+// ToTimeval()
+//
+// Some APIs use a timespec or a timeval as a Duration (e.g., nanosleep(2)
+// and select(2)), while others use them as a Time (e.g. clock_gettime(2)
+// and gettimeofday(2)), so conversion functions are provided for both cases.
+// The "to timespec/val" direction is easily handled via overloading, but
+// for "from timespec/val" the desired type is part of the function name.
+Duration DurationFromTimespec(timespec ts);
+Duration DurationFromTimeval(timeval tv);
+timespec ToTimespec(Duration d);
+timeval ToTimeval(Duration d);
+Time TimeFromTimespec(timespec ts);
+Time TimeFromTimeval(timeval tv);
+timespec ToTimespec(Time t);
+timeval ToTimeval(Time t);
+
+// FromChrono()
+//
+// Converts a std::chrono::system_clock::time_point to an absl::Time.
+//
+// Example:
+//
+//   auto tp = std::chrono::system_clock::from_time_t(123);
+//   absl::Time t = absl::FromChrono(tp);
+//   // t == absl::FromTimeT(123)
+Time FromChrono(const std::chrono::system_clock::time_point& tp);
+
+// ToChronoTime()
+//
+// Converts an absl::Time to a std::chrono::system_clock::time_point. If
+// overflow would occur, the returned value will saturate at the min/max time
+// point value instead.
+//
+// Example:
+//
+//   absl::Time t = absl::FromTimeT(123);
+//   auto tp = absl::ToChronoTime(t);
+//   // tp == std::chrono::system_clock::from_time_t(123);
+std::chrono::system_clock::time_point ToChronoTime(Time);
+
+// Support for flag values of type Time. Time flags must be specified in a
+// format that matches absl::RFC3339_full. For example:
+//
+//   --start_time=2016-01-02T03:04:05.678+08:00
+//
+// Note: A UTC offset (or 'Z' indicating a zero-offset from UTC) is required.
+//
+// Additionally, if you'd like to specify a time as a count of
+// seconds/milliseconds/etc from the Unix epoch, use an absl::Duration flag
+// and add that duration to absl::UnixEpoch() to get an absl::Time.
+bool AbslParseFlag(absl::string_view text, Time* t, std::string* error);
+std::string AbslUnparseFlag(Time t);
+ABSL_DEPRECATED("Use AbslParseFlag() instead.")
+bool ParseFlag(const std::string& text, Time* t, std::string* error);
+ABSL_DEPRECATED("Use AbslUnparseFlag() instead.")
+std::string UnparseFlag(Time t);
+
+// TimeZone
+//
+// The `absl::TimeZone` is an opaque, small, value-type class representing a
+// geo-political region within which particular rules are used for converting
+// between absolute and civil times (see https://git.io/v59Ly). `absl::TimeZone`
+// values are named using the TZ identifiers from the IANA Time Zone Database,
+// such as "America/Los_Angeles" or "Australia/Sydney". `absl::TimeZone` values
+// are created from factory functions such as `absl::LoadTimeZone()`. Note:
+// strings like "PST" and "EDT" are not valid TZ identifiers. Prefer to pass by
+// value rather than const reference.
+//
+// For more on the fundamental concepts of time zones, absolute times, and civil
+// times, see https://github.com/google/cctz#fundamental-concepts
+//
+// Examples:
+//
+//   absl::TimeZone utc = absl::UTCTimeZone();
+//   absl::TimeZone pst = absl::FixedTimeZone(-8 * 60 * 60);
+//   absl::TimeZone loc = absl::LocalTimeZone();
+//   absl::TimeZone lax;
+//   if (!absl::LoadTimeZone("America/Los_Angeles", &lax)) {
+//     // handle error case
+//   }
+//
+// See also:
+// - https://github.com/google/cctz
+// - https://www.iana.org/time-zones
+// - https://en.wikipedia.org/wiki/Zoneinfo
+class TimeZone {
+ public:
+  explicit TimeZone(time_internal::cctz::time_zone tz) : cz_(tz) {}
+  TimeZone() = default;  // UTC, but prefer UTCTimeZone() to be explicit.
+
+  // Copyable.
+  TimeZone(const TimeZone&) = default;
+  TimeZone& operator=(const TimeZone&) = default;
+
+  explicit operator time_internal::cctz::time_zone() const { return cz_; }
+
+  std::string name() const { return cz_.name(); }
+
+  // TimeZone::CivilInfo
+  //
+  // Information about the civil time corresponding to an absolute time.
+  // This struct is not intended to represent an instant in time. So, rather
+  // than passing a `TimeZone::CivilInfo` to a function, pass an `absl::Time`
+  // and an `absl::TimeZone`.
+  struct CivilInfo {
+    CivilSecond cs;
+    Duration subsecond;
+
+    // Note: The following fields exist for backward compatibility
+    // with older APIs.  Accessing these fields directly is a sign of
+    // imprudent logic in the calling code.  Modern time-related code
+    // should only access this data indirectly by way of FormatTime().
+    // These fields are undefined for InfiniteFuture() and InfinitePast().
+    int offset;             // seconds east of UTC
+    bool is_dst;            // is offset non-standard?
+    const char* zone_abbr;  // time-zone abbreviation (e.g., "PST")
+  };
+
+  // TimeZone::At(Time)
+  //
+  // Returns the civil time for this TimeZone at a certain `absl::Time`.
+  // If the input time is infinite, the output civil second will be set to
+  // CivilSecond::max() or min(), and the subsecond will be infinite.
+  //
+  // Example:
+  //
+  //   const auto epoch = lax.At(absl::UnixEpoch());
+  //   // epoch.cs == 1969-12-31 16:00:00
+  //   // epoch.subsecond == absl::ZeroDuration()
+  //   // epoch.offset == -28800
+  //   // epoch.is_dst == false
+  //   // epoch.abbr == "PST"
+  CivilInfo At(Time t) const;
+
+  // TimeZone::TimeInfo
+  //
+  // Information about the absolute times corresponding to a civil time.
+  // (Subseconds must be handled separately.)
+  //
+  // It is possible for a caller to pass a civil-time value that does
+  // not represent an actual or unique instant in time (due to a shift
+  // in UTC offset in the TimeZone, which results in a discontinuity in
+  // the civil-time components). For example, a daylight-saving-time
+  // transition skips or repeats civil times---in the United States,
+  // March 13, 2011 02:15 never occurred, while November 6, 2011 01:15
+  // occurred twice---so requests for such times are not well-defined.
+  // To account for these possibilities, `absl::TimeZone::TimeInfo` is
+  // richer than just a single `absl::Time`.
+  struct TimeInfo {
+    enum CivilKind {
+      UNIQUE,    // the civil time was singular (pre == trans == post)
+      SKIPPED,   // the civil time did not exist (pre >= trans > post)
+      REPEATED,  // the civil time was ambiguous (pre < trans <= post)
+    } kind;
+    Time pre;    // time calculated using the pre-transition offset
+    Time trans;  // when the civil-time discontinuity occurred
+    Time post;   // time calculated using the post-transition offset
+  };
+
+  // TimeZone::At(CivilSecond)
+  //
+  // Returns an `absl::TimeInfo` containing the absolute time(s) for this
+  // TimeZone at an `absl::CivilSecond`. When the civil time is skipped or
+  // repeated, returns times calculated using the pre-transition and post-
+  // transition UTC offsets, plus the transition time itself.
+  //
+  // Examples:
+  //
+  //   // A unique civil time
+  //   const auto jan01 = lax.At(absl::CivilSecond(2011, 1, 1, 0, 0, 0));
+  //   // jan01.kind == TimeZone::TimeInfo::UNIQUE
+  //   // jan01.pre    is 2011-01-01 00:00:00 -0800
+  //   // jan01.trans  is 2011-01-01 00:00:00 -0800
+  //   // jan01.post   is 2011-01-01 00:00:00 -0800
+  //
+  //   // A Spring DST transition, when there is a gap in civil time
+  //   const auto mar13 = lax.At(absl::CivilSecond(2011, 3, 13, 2, 15, 0));
+  //   // mar13.kind == TimeZone::TimeInfo::SKIPPED
+  //   // mar13.pre   is 2011-03-13 03:15:00 -0700
+  //   // mar13.trans is 2011-03-13 03:00:00 -0700
+  //   // mar13.post  is 2011-03-13 01:15:00 -0800
+  //
+  //   // A Fall DST transition, when civil times are repeated
+  //   const auto nov06 = lax.At(absl::CivilSecond(2011, 11, 6, 1, 15, 0));
+  //   // nov06.kind == TimeZone::TimeInfo::REPEATED
+  //   // nov06.pre   is 2011-11-06 01:15:00 -0700
+  //   // nov06.trans is 2011-11-06 01:00:00 -0800
+  //   // nov06.post  is 2011-11-06 01:15:00 -0800
+  TimeInfo At(CivilSecond ct) const;
+
+  // TimeZone::NextTransition()
+  // TimeZone::PrevTransition()
+  //
+  // Finds the time of the next/previous offset change in this time zone.
+  //
+  // By definition, `NextTransition(t, &trans)` returns false when `t` is
+  // `InfiniteFuture()`, and `PrevTransition(t, &trans)` returns false
+  // when `t` is `InfinitePast()`. If the zone has no transitions, the
+  // result will also be false no matter what the argument.
+  //
+  // Otherwise, when `t` is `InfinitePast()`, `NextTransition(t, &trans)`
+  // returns true and sets `trans` to the first recorded transition. Chains
+  // of calls to `NextTransition()/PrevTransition()` will eventually return
+  // false, but it is unspecified exactly when `NextTransition(t, &trans)`
+  // jumps to false, or what time is set by `PrevTransition(t, &trans)` for
+  // a very distant `t`.
+  //
+  // Note: Enumeration of time-zone transitions is for informational purposes
+  // only. Modern time-related code should not care about when offset changes
+  // occur.
+  //
+  // Example:
+  //   absl::TimeZone nyc;
+  //   if (!absl::LoadTimeZone("America/New_York", &nyc)) { ... }
+  //   const auto now = absl::Now();
+  //   auto t = absl::InfinitePast();
+  //   absl::TimeZone::CivilTransition trans;
+  //   while (t <= now && nyc.NextTransition(t, &trans)) {
+  //     // transition: trans.from -> trans.to
+  //     t = nyc.At(trans.to).trans;
+  //   }
+  struct CivilTransition {
+    CivilSecond from;  // the civil time we jump from
+    CivilSecond to;    // the civil time we jump to
+  };
+  bool NextTransition(Time t, CivilTransition* trans) const;
+  bool PrevTransition(Time t, CivilTransition* trans) const;
+
+  template <typename H>
+  friend H AbslHashValue(H h, TimeZone tz) {
+    return H::combine(std::move(h), tz.cz_);
+  }
+
+ private:
+  friend bool operator==(TimeZone a, TimeZone b) { return a.cz_ == b.cz_; }
+  friend bool operator!=(TimeZone a, TimeZone b) { return a.cz_ != b.cz_; }
+  friend std::ostream& operator<<(std::ostream& os, TimeZone tz) {
+    return os << tz.name();
+  }
+
+  time_internal::cctz::time_zone cz_;
+};
+
+// LoadTimeZone()
+//
+// Loads the named zone. May perform I/O on the initial load of the named
+// zone. If the name is invalid, or some other kind of error occurs, returns
+// `false` and `*tz` is set to the UTC time zone.
+inline bool LoadTimeZone(const std::string& name, TimeZone* tz) {
+  if (name == "localtime") {
+    *tz = TimeZone(time_internal::cctz::local_time_zone());
+    return true;
+  }
+  time_internal::cctz::time_zone cz;
+  const bool b = time_internal::cctz::load_time_zone(name, &cz);
+  *tz = TimeZone(cz);
+  return b;
+}
+
+// FixedTimeZone()
+//
+// Returns a TimeZone that is a fixed offset (seconds east) from UTC.
+// Note: If the absolute value of the offset is greater than 24 hours
+// you'll get UTC (i.e., no offset) instead.
+inline TimeZone FixedTimeZone(int seconds) {
+  return TimeZone(
+      time_internal::cctz::fixed_time_zone(std::chrono::seconds(seconds)));
+}
+
+// UTCTimeZone()
+//
+// Convenience method returning the UTC time zone.
+inline TimeZone UTCTimeZone() {
+  return TimeZone(time_internal::cctz::utc_time_zone());
+}
+
+// LocalTimeZone()
+//
+// Convenience method returning the local time zone, or UTC if there is
+// no configured local zone.  Warning: Be wary of using LocalTimeZone(),
+// and particularly so in a server process, as the zone configured for the
+// local machine should be irrelevant.  Prefer an explicit zone name.
+inline TimeZone LocalTimeZone() {
+  return TimeZone(time_internal::cctz::local_time_zone());
+}
+
+// ToCivilSecond()
+// ToCivilMinute()
+// ToCivilHour()
+// ToCivilDay()
+// ToCivilMonth()
+// ToCivilYear()
+//
+// Helpers for TimeZone::At(Time) to return particularly aligned civil times.
+//
+// Example:
+//
+//   absl::Time t = ...;
+//   absl::TimeZone tz = ...;
+//   const auto cd = absl::ToCivilDay(t, tz);
+inline CivilSecond ToCivilSecond(Time t, TimeZone tz) {
+  return tz.At(t).cs;  // already a CivilSecond
+}
+inline CivilMinute ToCivilMinute(Time t, TimeZone tz) {
+  return CivilMinute(tz.At(t).cs);
+}
+inline CivilHour ToCivilHour(Time t, TimeZone tz) {
+  return CivilHour(tz.At(t).cs);
+}
+inline CivilDay ToCivilDay(Time t, TimeZone tz) {
+  return CivilDay(tz.At(t).cs);
+}
+inline CivilMonth ToCivilMonth(Time t, TimeZone tz) {
+  return CivilMonth(tz.At(t).cs);
+}
+inline CivilYear ToCivilYear(Time t, TimeZone tz) {
+  return CivilYear(tz.At(t).cs);
+}
+
+// FromCivil()
+//
+// Helper for TimeZone::At(CivilSecond) that provides "order-preserving
+// semantics." If the civil time maps to a unique time, that time is
+// returned. If the civil time is repeated in the given time zone, the
+// time using the pre-transition offset is returned. Otherwise, the
+// civil time is skipped in the given time zone, and the transition time
+// is returned. This means that for any two civil times, ct1 and ct2,
+// (ct1 < ct2) => (FromCivil(ct1) <= FromCivil(ct2)), the equal case
+// being when two non-existent civil times map to the same transition time.
+//
+// Note: Accepts civil times of any alignment.
+inline Time FromCivil(CivilSecond ct, TimeZone tz) {
+  const auto ti = tz.At(ct);
+  if (ti.kind == TimeZone::TimeInfo::SKIPPED) return ti.trans;
+  return ti.pre;
+}
+
+// TimeConversion
+//
+// An `absl::TimeConversion` represents the conversion of year, month, day,
+// hour, minute, and second values (i.e., a civil time), in a particular
+// `absl::TimeZone`, to a time instant (an absolute time), as returned by
+// `absl::ConvertDateTime()`. Legacy version of `absl::TimeZone::TimeInfo`.
+//
+// Deprecated. Use `absl::TimeZone::TimeInfo`.
+struct
+    TimeConversion {
+  Time pre;    // time calculated using the pre-transition offset
+  Time trans;  // when the civil-time discontinuity occurred
+  Time post;   // time calculated using the post-transition offset
+
+  enum Kind {
+    UNIQUE,    // the civil time was singular (pre == trans == post)
+    SKIPPED,   // the civil time did not exist
+    REPEATED,  // the civil time was ambiguous
+  };
+  Kind kind;
+
+  bool normalized;  // input values were outside their valid ranges
+};
+
+// ConvertDateTime()
+//
+// Legacy version of `absl::TimeZone::At(absl::CivilSecond)` that takes
+// the civil time as six, separate values (YMDHMS).
+//
+// The input month, day, hour, minute, and second values can be outside
+// of their valid ranges, in which case they will be "normalized" during
+// the conversion.
+//
+// Example:
+//
+//   // "October 32" normalizes to "November 1".
+//   absl::TimeConversion tc =
+//       absl::ConvertDateTime(2013, 10, 32, 8, 30, 0, lax);
+//   // tc.kind == TimeConversion::UNIQUE && tc.normalized == true
+//   // absl::ToCivilDay(tc.pre, tz).month() == 11
+//   // absl::ToCivilDay(tc.pre, tz).day() == 1
+//
+// Deprecated. Use `absl::TimeZone::At(CivilSecond)`.
+TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour,
+                               int min, int sec, TimeZone tz);
+
+// FromDateTime()
+//
+// A convenience wrapper for `absl::ConvertDateTime()` that simply returns
+// the "pre" `absl::Time`.  That is, the unique result, or the instant that
+// is correct using the pre-transition offset (as if the transition never
+// happened).
+//
+// Example:
+//
+//   absl::Time t = absl::FromDateTime(2017, 9, 26, 9, 30, 0, lax);
+//   // t = 2017-09-26 09:30:00 -0700
+//
+// Deprecated. Use `absl::FromCivil(CivilSecond, TimeZone)`. Note that the
+// behavior of `FromCivil()` differs from `FromDateTime()` for skipped civil
+// times. If you care about that see `absl::TimeZone::At(absl::CivilSecond)`.
+inline Time FromDateTime(int64_t year, int mon, int day, int hour,
+                         int min, int sec, TimeZone tz) {
+  return ConvertDateTime(year, mon, day, hour, min, sec, tz).pre;
+}
+
+// FromTM()
+//
+// Converts the `tm_year`, `tm_mon`, `tm_mday`, `tm_hour`, `tm_min`, and
+// `tm_sec` fields to an `absl::Time` using the given time zone. See ctime(3)
+// for a description of the expected values of the tm fields. If the indicated
+// time instant is not unique (see `absl::TimeZone::At(absl::CivilSecond)`
+// above), the `tm_isdst` field is consulted to select the desired instant
+// (`tm_isdst` > 0 means DST, `tm_isdst` == 0 means no DST, `tm_isdst` < 0
+// means use the post-transition offset).
+Time FromTM(const struct tm& tm, TimeZone tz);
+
+// ToTM()
+//
+// Converts the given `absl::Time` to a struct tm using the given time zone.
+// See ctime(3) for a description of the values of the tm fields.
+struct tm ToTM(Time t, TimeZone tz);
+
+// RFC3339_full
+// RFC3339_sec
+//
+// FormatTime()/ParseTime() format specifiers for RFC3339 date/time strings,
+// with trailing zeros trimmed or with fractional seconds omitted altogether.
+//
+// Note that RFC3339_sec[] matches an ISO 8601 extended format for date and
+// time with UTC offset.  Also note the use of "%Y": RFC3339 mandates that
+// years have exactly four digits, but we allow them to take their natural
+// width.
+ABSL_DLL extern const char
+    RFC3339_full[];  // %Y-%m-%dT%H:%M:%E*S%Ez
+ABSL_DLL extern const char RFC3339_sec[];  // %Y-%m-%dT%H:%M:%S%Ez
+
+// RFC1123_full
+// RFC1123_no_wday
+//
+// FormatTime()/ParseTime() format specifiers for RFC1123 date/time strings.
+ABSL_DLL extern const char
+    RFC1123_full[];  // %a, %d %b %E4Y %H:%M:%S %z
+ABSL_DLL extern const char
+    RFC1123_no_wday[];  // %d %b %E4Y %H:%M:%S %z
+
+// FormatTime()
+//
+// Formats the given `absl::Time` in the `absl::TimeZone` according to the
+// provided format string. Uses strftime()-like formatting options, with
+// the following extensions:
+//
+//   - %Ez  - RFC3339-compatible numeric UTC offset (+hh:mm or -hh:mm)
+//   - %E*z - Full-resolution numeric UTC offset (+hh:mm:ss or -hh:mm:ss)
+//   - %E#S - Seconds with # digits of fractional precision
+//   - %E*S - Seconds with full fractional precision (a literal '*')
+//   - %E#f - Fractional seconds with # digits of precision
+//   - %E*f - Fractional seconds with full precision (a literal '*')
+//   - %E4Y - Four-character years (-999 ... -001, 0000, 0001 ... 9999)
+//
+// Note that %E0S behaves like %S, and %E0f produces no characters.  In
+// contrast %E*f always produces at least one digit, which may be '0'.
+//
+// Note that %Y produces as many characters as it takes to fully render the
+// year.  A year outside of [-999:9999] when formatted with %E4Y will produce
+// more than four characters, just like %Y.
+//
+// We recommend that format strings include the UTC offset (%z, %Ez, or %E*z)
+// so that the result uniquely identifies a time instant.
+//
+// Example:
+//
+//   absl::CivilSecond cs(2013, 1, 2, 3, 4, 5);
+//   absl::Time t = absl::FromCivil(cs, lax);
+//   std::string f = absl::FormatTime("%H:%M:%S", t, lax);  // "03:04:05"
+//   f = absl::FormatTime("%H:%M:%E3S", t, lax);  // "03:04:05.000"
+//
+// Note: If the given `absl::Time` is `absl::InfiniteFuture()`, the returned
+// string will be exactly "infinite-future". If the given `absl::Time` is
+// `absl::InfinitePast()`, the returned string will be exactly "infinite-past".
+// In both cases the given format string and `absl::TimeZone` are ignored.
+//
+std::string FormatTime(const std::string& format, Time t, TimeZone tz);
+
+// Convenience functions that format the given time using the RFC3339_full
+// format.  The first overload uses the provided TimeZone, while the second
+// uses LocalTimeZone().
+std::string FormatTime(Time t, TimeZone tz);
+std::string FormatTime(Time t);
+
+// Output stream operator.
+inline std::ostream& operator<<(std::ostream& os, Time t) {
+  return os << FormatTime(t);
+}
+
+// ParseTime()
+//
+// Parses an input string according to the provided format string and
+// returns the corresponding `absl::Time`. Uses strftime()-like formatting
+// options, with the same extensions as FormatTime(), but with the
+// exceptions that %E#S is interpreted as %E*S, and %E#f as %E*f.  %Ez
+// and %E*z also accept the same inputs.
+//
+// %Y consumes as many numeric characters as it can, so the matching data
+// should always be terminated with a non-numeric.  %E4Y always consumes
+// exactly four characters, including any sign.
+//
+// Unspecified fields are taken from the default date and time of ...
+//
+//   "1970-01-01 00:00:00.0 +0000"
+//
+// For example, parsing a string of "15:45" (%H:%M) will return an absl::Time
+// that represents "1970-01-01 15:45:00.0 +0000".
+//
+// Note that since ParseTime() returns time instants, it makes the most sense
+// to parse fully-specified date/time strings that include a UTC offset (%z,
+// %Ez, or %E*z).
+//
+// Note also that `absl::ParseTime()` only heeds the fields year, month, day,
+// hour, minute, (fractional) second, and UTC offset.  Other fields, like
+// weekday (%a or %A), while parsed for syntactic validity, are ignored
+// in the conversion.
+//
+// Date and time fields that are out-of-range will be treated as errors
+// rather than normalizing them like `absl::CivilSecond` does.  For example,
+// it is an error to parse the date "Oct 32, 2013" because 32 is out of range.
+//
+// A leap second of ":60" is normalized to ":00" of the following minute
+// with fractional seconds discarded.  The following table shows how the
+// given seconds and subseconds will be parsed:
+//
+//   "59.x" -> 59.x  // exact
+//   "60.x" -> 00.0  // normalized
+//   "00.x" -> 00.x  // exact
+//
+// Errors are indicated by returning false and assigning an error message
+// to the "err" out param if it is non-null.
+//
+// Note: If the input string is exactly "infinite-future", the returned
+// `absl::Time` will be `absl::InfiniteFuture()` and `true` will be returned.
+// If the input string is "infinite-past", the returned `absl::Time` will be
+// `absl::InfinitePast()` and `true` will be returned.
+//
+bool ParseTime(const std::string& format, const std::string& input, Time* time,
+               std::string* err);
+
+// Like ParseTime() above, but if the format string does not contain a UTC
+// offset specification (%z/%Ez/%E*z) then the input is interpreted in the
+// given TimeZone.  This means that the input, by itself, does not identify a
+// unique instant.  Being time-zone dependent, it also admits the possibility
+// of ambiguity or non-existence, in which case the "pre" time (as defined
+// by TimeZone::TimeInfo) is returned.  For these reasons we recommend that
+// all date/time strings include a UTC offset so they're context independent.
+bool ParseTime(const std::string& format, const std::string& input, TimeZone tz,
+               Time* time, std::string* err);
+
+// ============================================================================
+// Implementation Details Follow
+// ============================================================================
+
+namespace time_internal {
+
+// Creates a Duration with a given representation.
+// REQUIRES: hi,lo is a valid representation of a Duration as specified
+// in time/duration.cc.
+constexpr Duration MakeDuration(int64_t hi, uint32_t lo = 0) {
+  return Duration(hi, lo);
+}
+
+constexpr Duration MakeDuration(int64_t hi, int64_t lo) {
+  return MakeDuration(hi, static_cast<uint32_t>(lo));
+}
+
+// Make a Duration value from a floating-point number, as long as that number
+// is in the range [ 0 .. numeric_limits<int64_t>::max ), that is, as long as
+// it's positive and can be converted to int64_t without risk of UB.
+inline Duration MakePosDoubleDuration(double n) {
+  const int64_t int_secs = static_cast<int64_t>(n);
+  const uint32_t ticks =
+      static_cast<uint32_t>((n - int_secs) * kTicksPerSecond + 0.5);
+  return ticks < kTicksPerSecond
+             ? MakeDuration(int_secs, ticks)
+             : MakeDuration(int_secs + 1, ticks - kTicksPerSecond);
+}
+
+// Creates a normalized Duration from an almost-normalized (sec,ticks)
+// pair. sec may be positive or negative.  ticks must be in the range
+// -kTicksPerSecond < *ticks < kTicksPerSecond.  If ticks is negative it
+// will be normalized to a positive value in the resulting Duration.
+constexpr Duration MakeNormalizedDuration(int64_t sec, int64_t ticks) {
+  return (ticks < 0) ? MakeDuration(sec - 1, ticks + kTicksPerSecond)
+                     : MakeDuration(sec, ticks);
+}
+
+// Provide access to the Duration representation.
+constexpr int64_t GetRepHi(Duration d) { return d.rep_hi_; }
+constexpr uint32_t GetRepLo(Duration d) { return d.rep_lo_; }
+
+// Returns true iff d is positive or negative infinity.
+constexpr bool IsInfiniteDuration(Duration d) { return GetRepLo(d) == ~0U; }
+
+// Returns an infinite Duration with the opposite sign.
+// REQUIRES: IsInfiniteDuration(d)
+constexpr Duration OppositeInfinity(Duration d) {
+  return GetRepHi(d) < 0
+             ? MakeDuration((std::numeric_limits<int64_t>::max)(), ~0U)
+             : MakeDuration((std::numeric_limits<int64_t>::min)(), ~0U);
+}
+
+// Returns (-n)-1 (equivalently -(n+1)) without avoidable overflow.
+constexpr int64_t NegateAndSubtractOne(int64_t n) {
+  // Note: Good compilers will optimize this expression to ~n when using
+  // a two's-complement representation (which is required for int64_t).
+  return (n < 0) ? -(n + 1) : (-n) - 1;
+}
+
+// Map between a Time and a Duration since the Unix epoch.  Note that these
+// functions depend on the above mentioned choice of the Unix epoch for the
+// Time representation (and both need to be Time friends).  Without this
+// knowledge, we would need to add-in/subtract-out UnixEpoch() respectively.
+constexpr Time FromUnixDuration(Duration d) { return Time(d); }
+constexpr Duration ToUnixDuration(Time t) { return t.rep_; }
+
+template <std::intmax_t N>
+constexpr Duration FromInt64(int64_t v, std::ratio<1, N>) {
+  static_assert(0 < N && N <= 1000 * 1000 * 1000, "Unsupported ratio");
+  // Subsecond ratios cannot overflow.
+  return MakeNormalizedDuration(
+      v / N, v % N * kTicksPerNanosecond * 1000 * 1000 * 1000 / N);
+}
+constexpr Duration FromInt64(int64_t v, std::ratio<60>) {
+  return (v <= (std::numeric_limits<int64_t>::max)() / 60 &&
+          v >= (std::numeric_limits<int64_t>::min)() / 60)
+             ? MakeDuration(v * 60)
+             : v > 0 ? InfiniteDuration() : -InfiniteDuration();
+}
+constexpr Duration FromInt64(int64_t v, std::ratio<3600>) {
+  return (v <= (std::numeric_limits<int64_t>::max)() / 3600 &&
+          v >= (std::numeric_limits<int64_t>::min)() / 3600)
+             ? MakeDuration(v * 3600)
+             : v > 0 ? InfiniteDuration() : -InfiniteDuration();
+}
+
+// IsValidRep64<T>(0) is true if the expression `int64_t{std::declval<T>()}` is
+// valid. That is, if a T can be assigned to an int64_t without narrowing.
+template <typename T>
+constexpr auto IsValidRep64(int) -> decltype(int64_t{std::declval<T>()} == 0) {
+  return true;
+}
+template <typename T>
+constexpr auto IsValidRep64(char) -> bool {
+  return false;
+}
+
+// Converts a std::chrono::duration to an absl::Duration.
+template <typename Rep, typename Period>
+constexpr Duration FromChrono(const std::chrono::duration<Rep, Period>& d) {
+  static_assert(IsValidRep64<Rep>(0), "duration::rep is invalid");
+  return FromInt64(int64_t{d.count()}, Period{});
+}
+
+template <typename Ratio>
+int64_t ToInt64(Duration d, Ratio) {
+  // Note: This may be used on MSVC, which may have a system_clock period of
+  // std::ratio<1, 10 * 1000 * 1000>
+  return ToInt64Seconds(d * Ratio::den / Ratio::num);
+}
+// Fastpath implementations for the 6 common duration units.
+inline int64_t ToInt64(Duration d, std::nano) {
+  return ToInt64Nanoseconds(d);
+}
+inline int64_t ToInt64(Duration d, std::micro) {
+  return ToInt64Microseconds(d);
+}
+inline int64_t ToInt64(Duration d, std::milli) {
+  return ToInt64Milliseconds(d);
+}
+inline int64_t ToInt64(Duration d, std::ratio<1>) {
+  return ToInt64Seconds(d);
+}
+inline int64_t ToInt64(Duration d, std::ratio<60>) {
+  return ToInt64Minutes(d);
+}
+inline int64_t ToInt64(Duration d, std::ratio<3600>) {
+  return ToInt64Hours(d);
+}
+
+// Converts an absl::Duration to a chrono duration of type T.
+template <typename T>
+T ToChronoDuration(Duration d) {
+  using Rep = typename T::rep;
+  using Period = typename T::period;
+  static_assert(IsValidRep64<Rep>(0), "duration::rep is invalid");
+  if (time_internal::IsInfiniteDuration(d))
+    return d < ZeroDuration() ? (T::min)() : (T::max)();
+  const auto v = ToInt64(d, Period{});
+  if (v > (std::numeric_limits<Rep>::max)()) return (T::max)();
+  if (v < (std::numeric_limits<Rep>::min)()) return (T::min)();
+  return T{v};
+}
+
+}  // namespace time_internal
+
+constexpr Duration Nanoseconds(int64_t n) {
+  return time_internal::FromInt64(n, std::nano{});
+}
+constexpr Duration Microseconds(int64_t n) {
+  return time_internal::FromInt64(n, std::micro{});
+}
+constexpr Duration Milliseconds(int64_t n) {
+  return time_internal::FromInt64(n, std::milli{});
+}
+constexpr Duration Seconds(int64_t n) {
+  return time_internal::FromInt64(n, std::ratio<1>{});
+}
+constexpr Duration Minutes(int64_t n) {
+  return time_internal::FromInt64(n, std::ratio<60>{});
+}
+constexpr Duration Hours(int64_t n) {
+  return time_internal::FromInt64(n, std::ratio<3600>{});
+}
+
+constexpr bool operator<(Duration lhs, Duration rhs) {
+  return time_internal::GetRepHi(lhs) != time_internal::GetRepHi(rhs)
+             ? time_internal::GetRepHi(lhs) < time_internal::GetRepHi(rhs)
+             : time_internal::GetRepHi(lhs) ==
+                       (std::numeric_limits<int64_t>::min)()
+                   ? time_internal::GetRepLo(lhs) + 1 <
+                         time_internal::GetRepLo(rhs) + 1
+                   : time_internal::GetRepLo(lhs) <
+                         time_internal::GetRepLo(rhs);
+}
+
+constexpr bool operator==(Duration lhs, Duration rhs) {
+  return time_internal::GetRepHi(lhs) == time_internal::GetRepHi(rhs) &&
+         time_internal::GetRepLo(lhs) == time_internal::GetRepLo(rhs);
+}
+
+constexpr Duration operator-(Duration d) {
+  // This is a little interesting because of the special cases.
+  //
+  // If rep_lo_ is zero, we have it easy; it's safe to negate rep_hi_, we're
+  // dealing with an integral number of seconds, and the only special case is
+  // the maximum negative finite duration, which can't be negated.
+  //
+  // Infinities stay infinite, and just change direction.
+  //
+  // Finally we're in the case where rep_lo_ is non-zero, and we can borrow
+  // a second's worth of ticks and avoid overflow (as negating int64_t-min + 1
+  // is safe).
+  return time_internal::GetRepLo(d) == 0
+             ? time_internal::GetRepHi(d) ==
+                       (std::numeric_limits<int64_t>::min)()
+                   ? InfiniteDuration()
+                   : time_internal::MakeDuration(-time_internal::GetRepHi(d))
+             : time_internal::IsInfiniteDuration(d)
+                   ? time_internal::OppositeInfinity(d)
+                   : time_internal::MakeDuration(
+                         time_internal::NegateAndSubtractOne(
+                             time_internal::GetRepHi(d)),
+                         time_internal::kTicksPerSecond -
+                             time_internal::GetRepLo(d));
+}
+
+constexpr Duration InfiniteDuration() {
+  return time_internal::MakeDuration((std::numeric_limits<int64_t>::max)(),
+                                     ~0U);
+}
+
+constexpr Duration FromChrono(const std::chrono::nanoseconds& d) {
+  return time_internal::FromChrono(d);
+}
+constexpr Duration FromChrono(const std::chrono::microseconds& d) {
+  return time_internal::FromChrono(d);
+}
+constexpr Duration FromChrono(const std::chrono::milliseconds& d) {
+  return time_internal::FromChrono(d);
+}
+constexpr Duration FromChrono(const std::chrono::seconds& d) {
+  return time_internal::FromChrono(d);
+}
+constexpr Duration FromChrono(const std::chrono::minutes& d) {
+  return time_internal::FromChrono(d);
+}
+constexpr Duration FromChrono(const std::chrono::hours& d) {
+  return time_internal::FromChrono(d);
+}
+
+constexpr Time FromUnixNanos(int64_t ns) {
+  return time_internal::FromUnixDuration(Nanoseconds(ns));
+}
+
+constexpr Time FromUnixMicros(int64_t us) {
+  return time_internal::FromUnixDuration(Microseconds(us));
+}
+
+constexpr Time FromUnixMillis(int64_t ms) {
+  return time_internal::FromUnixDuration(Milliseconds(ms));
+}
+
+constexpr Time FromUnixSeconds(int64_t s) {
+  return time_internal::FromUnixDuration(Seconds(s));
+}
+
+constexpr Time FromTimeT(time_t t) {
+  return time_internal::FromUnixDuration(Seconds(t));
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TIME_TIME_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/any.h b/ChattingApp 000/Pods/abseil/absl/types/any.h
new file mode 100644
index 0000000..16bda79
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/any.h	
@@ -0,0 +1,547 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// any.h
+// -----------------------------------------------------------------------------
+//
+// This header file define the `absl::any` type for holding a type-safe value
+// of any type. The 'absl::any` type is useful for providing a way to hold
+// something that is, as yet, unspecified. Such unspecified types
+// traditionally are passed between API boundaries until they are later cast to
+// their "destination" types. To cast to such a destination type, use
+// `absl::any_cast()`. Note that when casting an `absl::any`, you must cast it
+// to an explicit type; implicit conversions will throw.
+//
+// Example:
+//
+//   auto a = absl::any(65);
+//   absl::any_cast<int>(a);         // 65
+//   absl::any_cast<char>(a);        // throws absl::bad_any_cast
+//   absl::any_cast<std::string>(a); // throws absl::bad_any_cast
+//
+// `absl::any` is a C++11 compatible version of the C++17 `std::any` abstraction
+// and is designed to be a drop-in replacement for code compliant with C++17.
+//
+// Traditionally, the behavior of casting to a temporary unspecified type has
+// been accomplished with the `void *` paradigm, where the pointer was to some
+// other unspecified type. `absl::any` provides an "owning" version of `void *`
+// that avoids issues of pointer management.
+//
+// Note: just as in the case of `void *`, use of `absl::any` (and its C++17
+// version `std::any`) is a code smell indicating that your API might not be
+// constructed correctly. We have seen that most uses of `any` are unwarranted,
+// and `absl::any`, like `std::any`, is difficult to use properly. Before using
+// this abstraction, make sure that you should not instead be rewriting your
+// code to be more specific.
+//
+// Abseil expects to release an `absl::variant` type shortly (a C++11 compatible
+// version of the C++17 `std::variant), which is generally preferred for use
+// over `absl::any`.
+#ifndef ABSL_TYPES_ANY_H_
+#define ABSL_TYPES_ANY_H_
+
+#include "absl/base/config.h"
+#include "absl/utility/utility.h"
+
+#ifdef ABSL_USES_STD_ANY
+
+#include <any>  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::any;
+using std::any_cast;
+using std::bad_any_cast;
+using std::make_any;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_ANY
+
+#include <algorithm>
+#include <cstddef>
+#include <initializer_list>
+#include <memory>
+#include <stdexcept>
+#include <type_traits>
+#include <typeinfo>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/bad_any_cast.h"
+
+// NOTE: This macro is an implementation detail that is undefined at the bottom
+// of the file. It is not intended for expansion directly from user code.
+#ifdef ABSL_ANY_DETAIL_HAS_RTTI
+#error ABSL_ANY_DETAIL_HAS_RTTI cannot be directly set
+#elif !defined(__GNUC__) || defined(__GXX_RTTI)
+#define ABSL_ANY_DETAIL_HAS_RTTI 1
+#endif  // !defined(__GNUC__) || defined(__GXX_RTTI)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace any_internal {
+
+template <typename Type>
+struct TypeTag {
+  constexpr static char dummy_var = 0;
+};
+
+template <typename Type>
+constexpr char TypeTag<Type>::dummy_var;
+
+// FastTypeId<Type>() evaluates at compile/link-time to a unique pointer for the
+// passed in type. These are meant to be good match for keys into maps or
+// straight up comparisons.
+template<typename Type>
+constexpr inline const void* FastTypeId() {
+  return &TypeTag<Type>::dummy_var;
+}
+
+}  // namespace any_internal
+
+class any;
+
+// swap()
+//
+// Swaps two `absl::any` values. Equivalent to `x.swap(y) where `x` and `y` are
+// `absl::any` types.
+void swap(any& x, any& y) noexcept;
+
+// make_any()
+//
+// Constructs an `absl::any` of type `T` with the given arguments.
+template <typename T, typename... Args>
+any make_any(Args&&... args);
+
+// Overload of `absl::make_any()` for constructing an `absl::any` type from an
+// initializer list.
+template <typename T, typename U, typename... Args>
+any make_any(std::initializer_list<U> il, Args&&... args);
+
+// any_cast()
+//
+// Statically casts the value of a `const absl::any` type to the given type.
+// This function will throw `absl::bad_any_cast` if the stored value type of the
+// `absl::any` does not match the cast.
+//
+// `any_cast()` can also be used to get a reference to the internal storage iff
+// a reference type is passed as its `ValueType`:
+//
+// Example:
+//
+//   absl::any my_any = std::vector<int>();
+//   absl::any_cast<std::vector<int>&>(my_any).push_back(42);
+template <typename ValueType>
+ValueType any_cast(const any& operand);
+
+// Overload of `any_cast()` to statically cast the value of a non-const
+// `absl::any` type to the given type. This function will throw
+// `absl::bad_any_cast` if the stored value type of the `absl::any` does not
+// match the cast.
+template <typename ValueType>
+ValueType any_cast(any& operand);  // NOLINT(runtime/references)
+
+// Overload of `any_cast()` to statically cast the rvalue of an `absl::any`
+// type. This function will throw `absl::bad_any_cast` if the stored value type
+// of the `absl::any` does not match the cast.
+template <typename ValueType>
+ValueType any_cast(any&& operand);
+
+// Overload of `any_cast()` to statically cast the value of a const pointer
+// `absl::any` type to the given pointer type, or `nullptr` if the stored value
+// type of the `absl::any` does not match the cast.
+template <typename ValueType>
+const ValueType* any_cast(const any* operand) noexcept;
+
+// Overload of `any_cast()` to statically cast the value of a pointer
+// `absl::any` type to the given pointer type, or `nullptr` if the stored value
+// type of the `absl::any` does not match the cast.
+template <typename ValueType>
+ValueType* any_cast(any* operand) noexcept;
+
+// -----------------------------------------------------------------------------
+// absl::any
+// -----------------------------------------------------------------------------
+//
+// An `absl::any` object provides the facility to either store an instance of a
+// type, known as the "contained object", or no value. An `absl::any` is used to
+// store values of types that are unknown at compile time. The `absl::any`
+// object, when containing a value, must contain a value type; storing a
+// reference type is neither desired nor supported.
+//
+// An `absl::any` can only store a type that is copy-constructible; move-only
+// types are not allowed within an `any` object.
+//
+// Example:
+//
+//   auto a = absl::any(65);                 // Literal, copyable
+//   auto b = absl::any(std::vector<int>()); // Default-initialized, copyable
+//   std::unique_ptr<Foo> my_foo;
+//   auto c = absl::any(std::move(my_foo));  // Error, not copy-constructible
+//
+// Note that `absl::any` makes use of decayed types (`absl::decay_t` in this
+// context) to remove const-volatile qualifiers (known as "cv qualifiers"),
+// decay functions to function pointers, etc. We essentially "decay" a given
+// type into its essential type.
+//
+// `absl::any` makes use of decayed types when determining the basic type `T` of
+// the value to store in the any's contained object. In the documentation below,
+// we explicitly denote this by using the phrase "a decayed type of `T`".
+//
+// Example:
+//
+//   const int a = 4;
+//   absl::any foo(a);  // Decay ensures we store an "int", not a "const int&".
+//
+//   void my_function() {}
+//   absl::any bar(my_function);  // Decay ensures we store a function pointer.
+//
+// `absl::any` is a C++11 compatible version of the C++17 `std::any` abstraction
+// and is designed to be a drop-in replacement for code compliant with C++17.
+class any {
+ private:
+  template <typename T>
+  struct IsInPlaceType;
+
+ public:
+  // Constructors
+
+  // Constructs an empty `absl::any` object (`any::has_value()` will return
+  // `false`).
+  constexpr any() noexcept;
+
+  // Copy constructs an `absl::any` object with a "contained object" of the
+  // passed type of `other` (or an empty `absl::any` if `other.has_value()` is
+  // `false`.
+  any(const any& other)
+      : obj_(other.has_value() ? other.obj_->Clone()
+                               : std::unique_ptr<ObjInterface>()) {}
+
+  // Move constructs an `absl::any` object with a "contained object" of the
+  // passed type of `other` (or an empty `absl::any` if `other.has_value()` is
+  // `false`).
+  any(any&& other) noexcept = default;
+
+  // Constructs an `absl::any` object with a "contained object" of the decayed
+  // type of `T`, which is initialized via `std::forward<T>(value)`.
+  //
+  // This constructor will not participate in overload resolution if the
+  // decayed type of `T` is not copy-constructible.
+  template <
+      typename T, typename VT = absl::decay_t<T>,
+      absl::enable_if_t<!absl::disjunction<
+          std::is_same<any, VT>, IsInPlaceType<VT>,
+          absl::negation<std::is_copy_constructible<VT> > >::value>* = nullptr>
+  any(T&& value) : obj_(new Obj<VT>(in_place, std::forward<T>(value))) {}
+
+  // Constructs an `absl::any` object with a "contained object" of the decayed
+  // type of `T`, which is initialized via `std::forward<T>(value)`.
+  template <typename T, typename... Args, typename VT = absl::decay_t<T>,
+            absl::enable_if_t<absl::conjunction<
+                std::is_copy_constructible<VT>,
+                std::is_constructible<VT, Args...>>::value>* = nullptr>
+  explicit any(in_place_type_t<T> /*tag*/, Args&&... args)
+      : obj_(new Obj<VT>(in_place, std::forward<Args>(args)...)) {}
+
+  // Constructs an `absl::any` object with a "contained object" of the passed
+  // type `VT` as a decayed type of `T`. `VT` is initialized as if
+  // direct-non-list-initializing an object of type `VT` with the arguments
+  // `initializer_list, std::forward<Args>(args)...`.
+  template <
+      typename T, typename U, typename... Args, typename VT = absl::decay_t<T>,
+      absl::enable_if_t<
+          absl::conjunction<std::is_copy_constructible<VT>,
+                            std::is_constructible<VT, std::initializer_list<U>&,
+                                                  Args...>>::value>* = nullptr>
+  explicit any(in_place_type_t<T> /*tag*/, std::initializer_list<U> ilist,
+               Args&&... args)
+      : obj_(new Obj<VT>(in_place, ilist, std::forward<Args>(args)...)) {}
+
+  // Assignment operators
+
+  // Copy assigns an `absl::any` object with a "contained object" of the
+  // passed type.
+  any& operator=(const any& rhs) {
+    any(rhs).swap(*this);
+    return *this;
+  }
+
+  // Move assigns an `absl::any` object with a "contained object" of the
+  // passed type. `rhs` is left in a valid but otherwise unspecified state.
+  any& operator=(any&& rhs) noexcept {
+    any(std::move(rhs)).swap(*this);
+    return *this;
+  }
+
+  // Assigns an `absl::any` object with a "contained object" of the passed type.
+  template <typename T, typename VT = absl::decay_t<T>,
+            absl::enable_if_t<absl::conjunction<
+                absl::negation<std::is_same<VT, any>>,
+                std::is_copy_constructible<VT>>::value>* = nullptr>
+  any& operator=(T&& rhs) {
+    any tmp(in_place_type_t<VT>(), std::forward<T>(rhs));
+    tmp.swap(*this);
+    return *this;
+  }
+
+  // Modifiers
+
+  // any::emplace()
+  //
+  // Emplaces a value within an `absl::any` object by calling `any::reset()`,
+  // initializing the contained value as if direct-non-list-initializing an
+  // object of type `VT` with the arguments `std::forward<Args>(args)...`, and
+  // returning a reference to the new contained value.
+  //
+  // Note: If an exception is thrown during the call to `VT`'s constructor,
+  // `*this` does not contain a value, and any previously contained value has
+  // been destroyed.
+  template <
+      typename T, typename... Args, typename VT = absl::decay_t<T>,
+      absl::enable_if_t<std::is_copy_constructible<VT>::value &&
+                        std::is_constructible<VT, Args...>::value>* = nullptr>
+  VT& emplace(Args&&... args) {
+    reset();  // NOTE: reset() is required here even in the world of exceptions.
+    Obj<VT>* const object_ptr =
+        new Obj<VT>(in_place, std::forward<Args>(args)...);
+    obj_ = std::unique_ptr<ObjInterface>(object_ptr);
+    return object_ptr->value;
+  }
+
+  // Overload of `any::emplace()` to emplace a value within an `absl::any`
+  // object by calling `any::reset()`, initializing the contained value as if
+  // direct-non-list-initializing an object of type `VT` with the arguments
+  // `initializer_list, std::forward<Args>(args)...`, and returning a reference
+  // to the new contained value.
+  //
+  // Note: If an exception is thrown during the call to `VT`'s constructor,
+  // `*this` does not contain a value, and any previously contained value has
+  // been destroyed. The function shall not participate in overload resolution
+  // unless `is_copy_constructible_v<VT>` is `true` and
+  // `is_constructible_v<VT, initializer_list<U>&, Args...>` is `true`.
+  template <
+      typename T, typename U, typename... Args, typename VT = absl::decay_t<T>,
+      absl::enable_if_t<std::is_copy_constructible<VT>::value &&
+                        std::is_constructible<VT, std::initializer_list<U>&,
+                                              Args...>::value>* = nullptr>
+  VT& emplace(std::initializer_list<U> ilist, Args&&... args) {
+    reset();  // NOTE: reset() is required here even in the world of exceptions.
+    Obj<VT>* const object_ptr =
+        new Obj<VT>(in_place, ilist, std::forward<Args>(args)...);
+    obj_ = std::unique_ptr<ObjInterface>(object_ptr);
+    return object_ptr->value;
+  }
+
+  // any::reset()
+  //
+  // Resets the state of the `absl::any` object, destroying the contained object
+  // if present.
+  void reset() noexcept { obj_ = nullptr; }
+
+  // any::swap()
+  //
+  // Swaps the passed value and the value of this `absl::any` object.
+  void swap(any& other) noexcept { obj_.swap(other.obj_); }
+
+  // Observers
+
+  // any::has_value()
+  //
+  // Returns `true` if the `any` object has a contained value, otherwise
+  // returns `false`.
+  bool has_value() const noexcept { return obj_ != nullptr; }
+
+#if ABSL_ANY_DETAIL_HAS_RTTI
+  // Returns: typeid(T) if *this has a contained object of type T, otherwise
+  // typeid(void).
+  const std::type_info& type() const noexcept {
+    if (has_value()) {
+      return obj_->Type();
+    }
+
+    return typeid(void);
+  }
+#endif  // ABSL_ANY_DETAIL_HAS_RTTI
+
+ private:
+  // Tagged type-erased abstraction for holding a cloneable object.
+  class ObjInterface {
+   public:
+    virtual ~ObjInterface() = default;
+    virtual std::unique_ptr<ObjInterface> Clone() const = 0;
+    virtual const void* ObjTypeId() const noexcept = 0;
+#if ABSL_ANY_DETAIL_HAS_RTTI
+    virtual const std::type_info& Type() const noexcept = 0;
+#endif  // ABSL_ANY_DETAIL_HAS_RTTI
+  };
+
+  // Hold a value of some queryable type, with an ability to Clone it.
+  template <typename T>
+  class Obj : public ObjInterface {
+   public:
+    template <typename... Args>
+    explicit Obj(in_place_t /*tag*/, Args&&... args)
+        : value(std::forward<Args>(args)...) {}
+
+    std::unique_ptr<ObjInterface> Clone() const final {
+      return std::unique_ptr<ObjInterface>(new Obj(in_place, value));
+    }
+
+    const void* ObjTypeId() const noexcept final { return IdForType<T>(); }
+
+#if ABSL_ANY_DETAIL_HAS_RTTI
+    const std::type_info& Type() const noexcept final { return typeid(T); }
+#endif  // ABSL_ANY_DETAIL_HAS_RTTI
+
+    T value;
+  };
+
+  std::unique_ptr<ObjInterface> CloneObj() const {
+    if (!obj_) return nullptr;
+    return obj_->Clone();
+  }
+
+  template <typename T>
+  constexpr static const void* IdForType() {
+    // Note: This type dance is to make the behavior consistent with typeid.
+    using NormalizedType =
+        typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+    return any_internal::FastTypeId<NormalizedType>();
+  }
+
+  const void* GetObjTypeId() const {
+    return obj_ ? obj_->ObjTypeId() : any_internal::FastTypeId<void>();
+  }
+
+  // `absl::any` nonmember functions //
+
+  // Description at the declaration site (top of file).
+  template <typename ValueType>
+  friend ValueType any_cast(const any& operand);
+
+  // Description at the declaration site (top of file).
+  template <typename ValueType>
+  friend ValueType any_cast(any& operand);  // NOLINT(runtime/references)
+
+  // Description at the declaration site (top of file).
+  template <typename T>
+  friend const T* any_cast(const any* operand) noexcept;
+
+  // Description at the declaration site (top of file).
+  template <typename T>
+  friend T* any_cast(any* operand) noexcept;
+
+  std::unique_ptr<ObjInterface> obj_;
+};
+
+// -----------------------------------------------------------------------------
+// Implementation Details
+// -----------------------------------------------------------------------------
+
+constexpr any::any() noexcept = default;
+
+template <typename T>
+struct any::IsInPlaceType : std::false_type {};
+
+template <typename T>
+struct any::IsInPlaceType<in_place_type_t<T>> : std::true_type {};
+
+inline void swap(any& x, any& y) noexcept { x.swap(y); }
+
+// Description at the declaration site (top of file).
+template <typename T, typename... Args>
+any make_any(Args&&... args) {
+  return any(in_place_type_t<T>(), std::forward<Args>(args)...);
+}
+
+// Description at the declaration site (top of file).
+template <typename T, typename U, typename... Args>
+any make_any(std::initializer_list<U> il, Args&&... args) {
+  return any(in_place_type_t<T>(), il, std::forward<Args>(args)...);
+}
+
+// Description at the declaration site (top of file).
+template <typename ValueType>
+ValueType any_cast(const any& operand) {
+  using U = typename std::remove_cv<
+      typename std::remove_reference<ValueType>::type>::type;
+  static_assert(std::is_constructible<ValueType, const U&>::value,
+                "Invalid ValueType");
+  auto* const result = (any_cast<U>)(&operand);
+  if (result == nullptr) {
+    any_internal::ThrowBadAnyCast();
+  }
+  return static_cast<ValueType>(*result);
+}
+
+// Description at the declaration site (top of file).
+template <typename ValueType>
+ValueType any_cast(any& operand) {  // NOLINT(runtime/references)
+  using U = typename std::remove_cv<
+      typename std::remove_reference<ValueType>::type>::type;
+  static_assert(std::is_constructible<ValueType, U&>::value,
+                "Invalid ValueType");
+  auto* result = (any_cast<U>)(&operand);
+  if (result == nullptr) {
+    any_internal::ThrowBadAnyCast();
+  }
+  return static_cast<ValueType>(*result);
+}
+
+// Description at the declaration site (top of file).
+template <typename ValueType>
+ValueType any_cast(any&& operand) {
+  using U = typename std::remove_cv<
+      typename std::remove_reference<ValueType>::type>::type;
+  static_assert(std::is_constructible<ValueType, U>::value,
+                "Invalid ValueType");
+  return static_cast<ValueType>(std::move((any_cast<U&>)(operand)));
+}
+
+// Description at the declaration site (top of file).
+template <typename T>
+const T* any_cast(const any* operand) noexcept {
+  using U =
+      typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+  return operand && operand->GetObjTypeId() == any::IdForType<U>()
+             ? std::addressof(
+                   static_cast<const any::Obj<U>*>(operand->obj_.get())->value)
+             : nullptr;
+}
+
+// Description at the declaration site (top of file).
+template <typename T>
+T* any_cast(any* operand) noexcept {
+  using U =
+      typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+  return operand && operand->GetObjTypeId() == any::IdForType<U>()
+             ? std::addressof(
+                   static_cast<any::Obj<U>*>(operand->obj_.get())->value)
+             : nullptr;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef ABSL_ANY_DETAIL_HAS_RTTI
+
+#endif  // ABSL_USES_STD_ANY
+
+#endif  // ABSL_TYPES_ANY_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.cc b/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.cc
new file mode 100644
index 0000000..b0592cc
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.cc	
@@ -0,0 +1,46 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/types/bad_any_cast.h"
+
+#ifndef ABSL_USES_STD_ANY
+
+#include <cstdlib>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+bad_any_cast::~bad_any_cast() = default;
+
+const char* bad_any_cast::what() const noexcept { return "Bad any cast"; }
+
+namespace any_internal {
+
+void ThrowBadAnyCast() {
+#ifdef ABSL_HAVE_EXCEPTIONS
+  throw bad_any_cast();
+#else
+  ABSL_RAW_LOG(FATAL, "Bad any cast");
+  std::abort();
+#endif
+}
+
+}  // namespace any_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_ANY
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.h b/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.h
new file mode 100644
index 0000000..114cef8
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_any_cast.h	
@@ -0,0 +1,75 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// bad_any_cast.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `absl::bad_any_cast` type.
+
+#ifndef ABSL_TYPES_BAD_ANY_CAST_H_
+#define ABSL_TYPES_BAD_ANY_CAST_H_
+
+#include <typeinfo>
+
+#include "absl/base/config.h"
+
+#ifdef ABSL_USES_STD_ANY
+
+#include <any>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::bad_any_cast;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_ANY
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// bad_any_cast
+// -----------------------------------------------------------------------------
+//
+// An `absl::bad_any_cast` type is an exception type that is thrown when
+// failing to successfully cast the return value of an `absl::any` object.
+//
+// Example:
+//
+//   auto a = absl::any(65);
+//   absl::any_cast<int>(a);         // 65
+//   try {
+//     absl::any_cast<char>(a);
+//   } catch(const absl::bad_any_cast& e) {
+//     std::cout << "Bad any cast: " << e.what() << '\n';
+//   }
+class bad_any_cast : public std::bad_cast {
+ public:
+  ~bad_any_cast() override;
+  const char* what() const noexcept override;
+};
+
+namespace any_internal {
+
+[[noreturn]] void ThrowBadAnyCast();
+
+}  // namespace any_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_ANY
+
+#endif  // ABSL_TYPES_BAD_ANY_CAST_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.cc b/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.cc
new file mode 100644
index 0000000..26aca70
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.cc	
@@ -0,0 +1,48 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/types/bad_optional_access.h"
+
+#ifndef ABSL_USES_STD_OPTIONAL
+
+#include <cstdlib>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+bad_optional_access::~bad_optional_access() = default;
+
+const char* bad_optional_access::what() const noexcept {
+  return "optional has no value";
+}
+
+namespace optional_internal {
+
+void throw_bad_optional_access() {
+#ifdef ABSL_HAVE_EXCEPTIONS
+  throw bad_optional_access();
+#else
+  ABSL_RAW_LOG(FATAL, "Bad optional access");
+  abort();
+#endif
+}
+
+}  // namespace optional_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_OPTIONAL
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.h b/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.h
new file mode 100644
index 0000000..a500286
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_optional_access.h	
@@ -0,0 +1,78 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// bad_optional_access.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `absl::bad_optional_access` type.
+
+#ifndef ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_
+#define ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_
+
+#include <stdexcept>
+
+#include "absl/base/config.h"
+
+#ifdef ABSL_USES_STD_OPTIONAL
+
+#include <optional>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::bad_optional_access;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_OPTIONAL
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// bad_optional_access
+// -----------------------------------------------------------------------------
+//
+// An `absl::bad_optional_access` type is an exception type that is thrown when
+// attempting to access an `absl::optional` object that does not contain a
+// value.
+//
+// Example:
+//
+//   absl::optional<int> o;
+//
+//   try {
+//     int n = o.value();
+//   } catch(const absl::bad_optional_access& e) {
+//     std::cout << "Bad optional access: " << e.what() << '\n';
+//   }
+class bad_optional_access : public std::exception {
+ public:
+  bad_optional_access() = default;
+  ~bad_optional_access() override;
+  const char* what() const noexcept override;
+};
+
+namespace optional_internal {
+
+// throw delegator
+[[noreturn]] void throw_bad_optional_access();
+
+}  // namespace optional_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_OPTIONAL
+
+#endif  // ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.cc b/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.cc
new file mode 100644
index 0000000..3dc88cc
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.cc	
@@ -0,0 +1,64 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/types/bad_variant_access.h"
+
+#ifndef ABSL_USES_STD_VARIANT
+
+#include <cstdlib>
+#include <stdexcept>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/raw_logging.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+//////////////////////////
+// [variant.bad.access] //
+//////////////////////////
+
+bad_variant_access::~bad_variant_access() = default;
+
+const char* bad_variant_access::what() const noexcept {
+  return "Bad variant access";
+}
+
+namespace variant_internal {
+
+void ThrowBadVariantAccess() {
+#ifdef ABSL_HAVE_EXCEPTIONS
+  throw bad_variant_access();
+#else
+  ABSL_RAW_LOG(FATAL, "Bad variant access");
+  abort();  // TODO(calabrese) Remove once RAW_LOG FATAL is noreturn.
+#endif
+}
+
+void Rethrow() {
+#ifdef ABSL_HAVE_EXCEPTIONS
+  throw;
+#else
+  ABSL_RAW_LOG(FATAL,
+               "Internal error in absl::variant implementation. Attempted to "
+               "rethrow an exception when building with exceptions disabled.");
+  abort();  // TODO(calabrese) Remove once RAW_LOG FATAL is noreturn.
+#endif
+}
+
+}  // namespace variant_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_VARIANT
diff --git a/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.h b/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.h
new file mode 100644
index 0000000..095969f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/bad_variant_access.h	
@@ -0,0 +1,82 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// bad_variant_access.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `absl::bad_variant_access` type.
+
+#ifndef ABSL_TYPES_BAD_VARIANT_ACCESS_H_
+#define ABSL_TYPES_BAD_VARIANT_ACCESS_H_
+
+#include <stdexcept>
+
+#include "absl/base/config.h"
+
+#ifdef ABSL_USES_STD_VARIANT
+
+#include <variant>
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::bad_variant_access;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_VARIANT
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// bad_variant_access
+// -----------------------------------------------------------------------------
+//
+// An `absl::bad_variant_access` type is an exception type that is thrown in
+// the following cases:
+//
+//   * Calling `absl::get(absl::variant) with an index or type that does not
+//     match the currently selected alternative type
+//   * Calling `absl::visit on an `absl::variant` that is in the
+//     `variant::valueless_by_exception` state.
+//
+// Example:
+//
+//   absl::variant<int, std::string> v;
+//   v = 1;
+//   try {
+//     absl::get<std::string>(v);
+//   } catch(const absl::bad_variant_access& e) {
+//     std::cout << "Bad variant access: " << e.what() << '\n';
+//   }
+class bad_variant_access : public std::exception {
+ public:
+  bad_variant_access() noexcept = default;
+  ~bad_variant_access() override;
+  const char* what() const noexcept override;
+};
+
+namespace variant_internal {
+
+[[noreturn]] void ThrowBadVariantAccess();
+[[noreturn]] void Rethrow();
+
+}  // namespace variant_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_USES_STD_VARIANT
+
+#endif  // ABSL_TYPES_BAD_VARIANT_ACCESS_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/compare.h b/ChattingApp 000/Pods/abseil/absl/types/compare.h
new file mode 100644
index 0000000..62ca70f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/compare.h	
@@ -0,0 +1,598 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// compare.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `absl::weak_equality`, `absl::strong_equality`,
+// `absl::partial_ordering`, `absl::weak_ordering`, and `absl::strong_ordering`
+// types for storing the results of three way comparisons.
+//
+// Example:
+//   absl::weak_ordering compare(const std::string& a, const std::string& b);
+//
+// These are C++11 compatible versions of the C++20 corresponding types
+// (`std::weak_equality`, etc.) and are designed to be drop-in replacements
+// for code compliant with C++20.
+
+#ifndef ABSL_TYPES_COMPARE_H_
+#define ABSL_TYPES_COMPARE_H_
+
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+#include <type_traits>
+
+#include "absl/base/attributes.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace compare_internal {
+
+using value_type = int8_t;
+
+template <typename T>
+struct Fail {
+  static_assert(sizeof(T) < 0, "Only literal `0` is allowed.");
+};
+
+// We need the NullPtrT template to avoid triggering the modernize-use-nullptr
+// ClangTidy warning in user code.
+template <typename NullPtrT = std::nullptr_t>
+struct OnlyLiteralZero {
+  constexpr OnlyLiteralZero(NullPtrT) noexcept {}  // NOLINT
+
+  // Fails compilation when `nullptr` or integral type arguments other than
+  // `int` are passed. This constructor doesn't accept `int` because literal `0`
+  // has type `int`. Literal `0` arguments will be implicitly converted to
+  // `std::nullptr_t` and accepted by the above constructor, while other `int`
+  // arguments will fail to be converted and cause compilation failure.
+  template <
+      typename T,
+      typename = typename std::enable_if<
+          std::is_same<T, std::nullptr_t>::value ||
+          (std::is_integral<T>::value && !std::is_same<T, int>::value)>::type,
+      typename = typename Fail<T>::type>
+  OnlyLiteralZero(T);  // NOLINT
+};
+
+enum class eq : value_type {
+  equal = 0,
+  equivalent = equal,
+  nonequal = 1,
+  nonequivalent = nonequal,
+};
+
+enum class ord : value_type { less = -1, greater = 1 };
+
+enum class ncmp : value_type { unordered = -127 };
+
+// Define macros to allow for creation or emulation of C++17 inline variables
+// based on whether the feature is supported. Note: we can't use
+// ABSL_INTERNAL_INLINE_CONSTEXPR here because the variables here are of
+// incomplete types so they need to be defined after the types are complete.
+#ifdef __cpp_inline_variables
+
+#define ABSL_COMPARE_INLINE_BASECLASS_DECL(name)
+
+#define ABSL_COMPARE_INLINE_SUBCLASS_DECL(type, name) \
+  static const type name
+
+#define ABSL_COMPARE_INLINE_INIT(type, name, init) \
+  inline constexpr type type::name(init)
+
+#else  // __cpp_inline_variables
+
+#define ABSL_COMPARE_INLINE_BASECLASS_DECL(name) \
+  ABSL_CONST_INIT static const T name
+
+#define ABSL_COMPARE_INLINE_SUBCLASS_DECL(type, name)
+
+#define ABSL_COMPARE_INLINE_INIT(type, name, init) \
+  template <typename T>                            \
+  const T compare_internal::type##_base<T>::name(init)
+
+#endif  // __cpp_inline_variables
+
+// These template base classes allow for defining the values of the constants
+// in the header file (for performance) without using inline variables (which
+// aren't available in C++11).
+template <typename T>
+struct weak_equality_base {
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equivalent);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(nonequivalent);
+};
+
+template <typename T>
+struct strong_equality_base {
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equal);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(nonequal);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equivalent);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(nonequivalent);
+};
+
+template <typename T>
+struct partial_ordering_base {
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(less);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equivalent);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(greater);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(unordered);
+};
+
+template <typename T>
+struct weak_ordering_base {
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(less);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equivalent);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(greater);
+};
+
+template <typename T>
+struct strong_ordering_base {
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(less);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equal);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(equivalent);
+  ABSL_COMPARE_INLINE_BASECLASS_DECL(greater);
+};
+
+}  // namespace compare_internal
+
+class weak_equality
+    : public compare_internal::weak_equality_base<weak_equality> {
+  explicit constexpr weak_equality(compare_internal::eq v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  friend struct compare_internal::weak_equality_base<weak_equality>;
+
+ public:
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(weak_equality, equivalent);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(weak_equality, nonequivalent);
+
+  // Comparisons
+  friend constexpr bool operator==(
+      weak_equality v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ == 0;
+  }
+  friend constexpr bool operator!=(
+      weak_equality v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ != 0;
+  }
+  friend constexpr bool operator==(compare_internal::OnlyLiteralZero<>,
+                                   weak_equality v) noexcept {
+    return 0 == v.value_;
+  }
+  friend constexpr bool operator!=(compare_internal::OnlyLiteralZero<>,
+                                   weak_equality v) noexcept {
+    return 0 != v.value_;
+  }
+  friend constexpr bool operator==(weak_equality v1,
+                                   weak_equality v2) noexcept {
+    return v1.value_ == v2.value_;
+  }
+  friend constexpr bool operator!=(weak_equality v1,
+                                   weak_equality v2) noexcept {
+    return v1.value_ != v2.value_;
+  }
+
+ private:
+  compare_internal::value_type value_;
+};
+ABSL_COMPARE_INLINE_INIT(weak_equality, equivalent,
+                         compare_internal::eq::equivalent);
+ABSL_COMPARE_INLINE_INIT(weak_equality, nonequivalent,
+                         compare_internal::eq::nonequivalent);
+
+class strong_equality
+    : public compare_internal::strong_equality_base<strong_equality> {
+  explicit constexpr strong_equality(compare_internal::eq v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  friend struct compare_internal::strong_equality_base<strong_equality>;
+
+ public:
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_equality, equal);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_equality, nonequal);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_equality, equivalent);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_equality, nonequivalent);
+
+  // Conversion
+  constexpr operator weak_equality() const noexcept {  // NOLINT
+    return value_ == 0 ? weak_equality::equivalent
+                       : weak_equality::nonequivalent;
+  }
+  // Comparisons
+  friend constexpr bool operator==(
+      strong_equality v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ == 0;
+  }
+  friend constexpr bool operator!=(
+      strong_equality v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ != 0;
+  }
+  friend constexpr bool operator==(compare_internal::OnlyLiteralZero<>,
+                                   strong_equality v) noexcept {
+    return 0 == v.value_;
+  }
+  friend constexpr bool operator!=(compare_internal::OnlyLiteralZero<>,
+                                   strong_equality v) noexcept {
+    return 0 != v.value_;
+  }
+  friend constexpr bool operator==(strong_equality v1,
+                                   strong_equality v2) noexcept {
+    return v1.value_ == v2.value_;
+  }
+  friend constexpr bool operator!=(strong_equality v1,
+                                   strong_equality v2) noexcept {
+    return v1.value_ != v2.value_;
+  }
+
+ private:
+  compare_internal::value_type value_;
+};
+ABSL_COMPARE_INLINE_INIT(strong_equality, equal, compare_internal::eq::equal);
+ABSL_COMPARE_INLINE_INIT(strong_equality, nonequal,
+                         compare_internal::eq::nonequal);
+ABSL_COMPARE_INLINE_INIT(strong_equality, equivalent,
+                         compare_internal::eq::equivalent);
+ABSL_COMPARE_INLINE_INIT(strong_equality, nonequivalent,
+                         compare_internal::eq::nonequivalent);
+
+class partial_ordering
+    : public compare_internal::partial_ordering_base<partial_ordering> {
+  explicit constexpr partial_ordering(compare_internal::eq v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  explicit constexpr partial_ordering(compare_internal::ord v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  explicit constexpr partial_ordering(compare_internal::ncmp v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  friend struct compare_internal::partial_ordering_base<partial_ordering>;
+
+  constexpr bool is_ordered() const noexcept {
+    return value_ !=
+           compare_internal::value_type(compare_internal::ncmp::unordered);
+  }
+
+ public:
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(partial_ordering, less);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(partial_ordering, equivalent);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(partial_ordering, greater);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(partial_ordering, unordered);
+
+  // Conversion
+  constexpr operator weak_equality() const noexcept {  // NOLINT
+    return value_ == 0 ? weak_equality::equivalent
+                       : weak_equality::nonequivalent;
+  }
+  // Comparisons
+  friend constexpr bool operator==(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.is_ordered() && v.value_ == 0;
+  }
+  friend constexpr bool operator!=(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return !v.is_ordered() || v.value_ != 0;
+  }
+  friend constexpr bool operator<(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.is_ordered() && v.value_ < 0;
+  }
+  friend constexpr bool operator<=(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.is_ordered() && v.value_ <= 0;
+  }
+  friend constexpr bool operator>(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.is_ordered() && v.value_ > 0;
+  }
+  friend constexpr bool operator>=(
+      partial_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.is_ordered() && v.value_ >= 0;
+  }
+  friend constexpr bool operator==(compare_internal::OnlyLiteralZero<>,
+                                   partial_ordering v) noexcept {
+    return v.is_ordered() && 0 == v.value_;
+  }
+  friend constexpr bool operator!=(compare_internal::OnlyLiteralZero<>,
+                                   partial_ordering v) noexcept {
+    return !v.is_ordered() || 0 != v.value_;
+  }
+  friend constexpr bool operator<(compare_internal::OnlyLiteralZero<>,
+                                  partial_ordering v) noexcept {
+    return v.is_ordered() && 0 < v.value_;
+  }
+  friend constexpr bool operator<=(compare_internal::OnlyLiteralZero<>,
+                                   partial_ordering v) noexcept {
+    return v.is_ordered() && 0 <= v.value_;
+  }
+  friend constexpr bool operator>(compare_internal::OnlyLiteralZero<>,
+                                  partial_ordering v) noexcept {
+    return v.is_ordered() && 0 > v.value_;
+  }
+  friend constexpr bool operator>=(compare_internal::OnlyLiteralZero<>,
+                                   partial_ordering v) noexcept {
+    return v.is_ordered() && 0 >= v.value_;
+  }
+  friend constexpr bool operator==(partial_ordering v1,
+                                   partial_ordering v2) noexcept {
+    return v1.value_ == v2.value_;
+  }
+  friend constexpr bool operator!=(partial_ordering v1,
+                                   partial_ordering v2) noexcept {
+    return v1.value_ != v2.value_;
+  }
+
+ private:
+  compare_internal::value_type value_;
+};
+ABSL_COMPARE_INLINE_INIT(partial_ordering, less, compare_internal::ord::less);
+ABSL_COMPARE_INLINE_INIT(partial_ordering, equivalent,
+                         compare_internal::eq::equivalent);
+ABSL_COMPARE_INLINE_INIT(partial_ordering, greater,
+                         compare_internal::ord::greater);
+ABSL_COMPARE_INLINE_INIT(partial_ordering, unordered,
+                         compare_internal::ncmp::unordered);
+
+class weak_ordering
+    : public compare_internal::weak_ordering_base<weak_ordering> {
+  explicit constexpr weak_ordering(compare_internal::eq v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  explicit constexpr weak_ordering(compare_internal::ord v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  friend struct compare_internal::weak_ordering_base<weak_ordering>;
+
+ public:
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(weak_ordering, less);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(weak_ordering, equivalent);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(weak_ordering, greater);
+
+  // Conversions
+  constexpr operator weak_equality() const noexcept {  // NOLINT
+    return value_ == 0 ? weak_equality::equivalent
+                       : weak_equality::nonequivalent;
+  }
+  constexpr operator partial_ordering() const noexcept {  // NOLINT
+    return value_ == 0 ? partial_ordering::equivalent
+                       : (value_ < 0 ? partial_ordering::less
+                                     : partial_ordering::greater);
+  }
+  // Comparisons
+  friend constexpr bool operator==(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ == 0;
+  }
+  friend constexpr bool operator!=(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ != 0;
+  }
+  friend constexpr bool operator<(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ < 0;
+  }
+  friend constexpr bool operator<=(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ <= 0;
+  }
+  friend constexpr bool operator>(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ > 0;
+  }
+  friend constexpr bool operator>=(
+      weak_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ >= 0;
+  }
+  friend constexpr bool operator==(compare_internal::OnlyLiteralZero<>,
+                                   weak_ordering v) noexcept {
+    return 0 == v.value_;
+  }
+  friend constexpr bool operator!=(compare_internal::OnlyLiteralZero<>,
+                                   weak_ordering v) noexcept {
+    return 0 != v.value_;
+  }
+  friend constexpr bool operator<(compare_internal::OnlyLiteralZero<>,
+                                  weak_ordering v) noexcept {
+    return 0 < v.value_;
+  }
+  friend constexpr bool operator<=(compare_internal::OnlyLiteralZero<>,
+                                   weak_ordering v) noexcept {
+    return 0 <= v.value_;
+  }
+  friend constexpr bool operator>(compare_internal::OnlyLiteralZero<>,
+                                  weak_ordering v) noexcept {
+    return 0 > v.value_;
+  }
+  friend constexpr bool operator>=(compare_internal::OnlyLiteralZero<>,
+                                   weak_ordering v) noexcept {
+    return 0 >= v.value_;
+  }
+  friend constexpr bool operator==(weak_ordering v1,
+                                   weak_ordering v2) noexcept {
+    return v1.value_ == v2.value_;
+  }
+  friend constexpr bool operator!=(weak_ordering v1,
+                                   weak_ordering v2) noexcept {
+    return v1.value_ != v2.value_;
+  }
+
+ private:
+  compare_internal::value_type value_;
+};
+ABSL_COMPARE_INLINE_INIT(weak_ordering, less, compare_internal::ord::less);
+ABSL_COMPARE_INLINE_INIT(weak_ordering, equivalent,
+                         compare_internal::eq::equivalent);
+ABSL_COMPARE_INLINE_INIT(weak_ordering, greater,
+                         compare_internal::ord::greater);
+
+class strong_ordering
+    : public compare_internal::strong_ordering_base<strong_ordering> {
+  explicit constexpr strong_ordering(compare_internal::eq v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  explicit constexpr strong_ordering(compare_internal::ord v) noexcept
+      : value_(static_cast<compare_internal::value_type>(v)) {}
+  friend struct compare_internal::strong_ordering_base<strong_ordering>;
+
+ public:
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_ordering, less);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_ordering, equal);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_ordering, equivalent);
+  ABSL_COMPARE_INLINE_SUBCLASS_DECL(strong_ordering, greater);
+
+  // Conversions
+  constexpr operator weak_equality() const noexcept {  // NOLINT
+    return value_ == 0 ? weak_equality::equivalent
+                       : weak_equality::nonequivalent;
+  }
+  constexpr operator strong_equality() const noexcept {  // NOLINT
+    return value_ == 0 ? strong_equality::equal : strong_equality::nonequal;
+  }
+  constexpr operator partial_ordering() const noexcept {  // NOLINT
+    return value_ == 0 ? partial_ordering::equivalent
+                       : (value_ < 0 ? partial_ordering::less
+                                     : partial_ordering::greater);
+  }
+  constexpr operator weak_ordering() const noexcept {  // NOLINT
+    return value_ == 0
+               ? weak_ordering::equivalent
+               : (value_ < 0 ? weak_ordering::less : weak_ordering::greater);
+  }
+  // Comparisons
+  friend constexpr bool operator==(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ == 0;
+  }
+  friend constexpr bool operator!=(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ != 0;
+  }
+  friend constexpr bool operator<(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ < 0;
+  }
+  friend constexpr bool operator<=(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ <= 0;
+  }
+  friend constexpr bool operator>(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ > 0;
+  }
+  friend constexpr bool operator>=(
+      strong_ordering v, compare_internal::OnlyLiteralZero<>) noexcept {
+    return v.value_ >= 0;
+  }
+  friend constexpr bool operator==(compare_internal::OnlyLiteralZero<>,
+                                   strong_ordering v) noexcept {
+    return 0 == v.value_;
+  }
+  friend constexpr bool operator!=(compare_internal::OnlyLiteralZero<>,
+                                   strong_ordering v) noexcept {
+    return 0 != v.value_;
+  }
+  friend constexpr bool operator<(compare_internal::OnlyLiteralZero<>,
+                                  strong_ordering v) noexcept {
+    return 0 < v.value_;
+  }
+  friend constexpr bool operator<=(compare_internal::OnlyLiteralZero<>,
+                                   strong_ordering v) noexcept {
+    return 0 <= v.value_;
+  }
+  friend constexpr bool operator>(compare_internal::OnlyLiteralZero<>,
+                                  strong_ordering v) noexcept {
+    return 0 > v.value_;
+  }
+  friend constexpr bool operator>=(compare_internal::OnlyLiteralZero<>,
+                                   strong_ordering v) noexcept {
+    return 0 >= v.value_;
+  }
+  friend constexpr bool operator==(strong_ordering v1,
+                                   strong_ordering v2) noexcept {
+    return v1.value_ == v2.value_;
+  }
+  friend constexpr bool operator!=(strong_ordering v1,
+                                   strong_ordering v2) noexcept {
+    return v1.value_ != v2.value_;
+  }
+
+ private:
+  compare_internal::value_type value_;
+};
+ABSL_COMPARE_INLINE_INIT(strong_ordering, less, compare_internal::ord::less);
+ABSL_COMPARE_INLINE_INIT(strong_ordering, equal, compare_internal::eq::equal);
+ABSL_COMPARE_INLINE_INIT(strong_ordering, equivalent,
+                         compare_internal::eq::equivalent);
+ABSL_COMPARE_INLINE_INIT(strong_ordering, greater,
+                         compare_internal::ord::greater);
+
+#undef ABSL_COMPARE_INLINE_BASECLASS_DECL
+#undef ABSL_COMPARE_INLINE_SUBCLASS_DECL
+#undef ABSL_COMPARE_INLINE_INIT
+
+namespace compare_internal {
+// We also provide these comparator adapter functions for internal absl use.
+
+// Helper functions to do a boolean comparison of two keys given a boolean
+// or three-way comparator.
+// SFINAE prevents implicit conversions to bool (such as from int).
+template <typename Bool,
+          absl::enable_if_t<std::is_same<bool, Bool>::value, int> = 0>
+constexpr bool compare_result_as_less_than(const Bool r) { return r; }
+constexpr bool compare_result_as_less_than(const absl::weak_ordering r) {
+  return r < 0;
+}
+
+template <typename Compare, typename K, typename LK>
+constexpr bool do_less_than_comparison(const Compare &compare, const K &x,
+                                       const LK &y) {
+  return compare_result_as_less_than(compare(x, y));
+}
+
+// Helper functions to do a three-way comparison of two keys given a boolean or
+// three-way comparator.
+// SFINAE prevents implicit conversions to int (such as from bool).
+template <typename Int,
+          absl::enable_if_t<std::is_same<int, Int>::value, int> = 0>
+constexpr absl::weak_ordering compare_result_as_ordering(const Int c) {
+  return c < 0 ? absl::weak_ordering::less
+               : c == 0 ? absl::weak_ordering::equivalent
+                        : absl::weak_ordering::greater;
+}
+constexpr absl::weak_ordering compare_result_as_ordering(
+    const absl::weak_ordering c) {
+  return c;
+}
+
+template <
+    typename Compare, typename K, typename LK,
+    absl::enable_if_t<!std::is_same<bool, absl::result_of_t<Compare(
+                                              const K &, const LK &)>>::value,
+                      int> = 0>
+constexpr absl::weak_ordering do_three_way_comparison(const Compare &compare,
+                                                      const K &x, const LK &y) {
+  return compare_result_as_ordering(compare(x, y));
+}
+template <
+    typename Compare, typename K, typename LK,
+    absl::enable_if_t<std::is_same<bool, absl::result_of_t<Compare(
+                                             const K &, const LK &)>>::value,
+                      int> = 0>
+constexpr absl::weak_ordering do_three_way_comparison(const Compare &compare,
+                                                      const K &x, const LK &y) {
+  return compare(x, y) ? absl::weak_ordering::less
+                       : compare(y, x) ? absl::weak_ordering::greater
+                                       : absl::weak_ordering::equivalent;
+}
+
+}  // namespace compare_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TYPES_COMPARE_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/internal/optional.h b/ChattingApp 000/Pods/abseil/absl/types/internal/optional.h
new file mode 100644
index 0000000..92932b6
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/internal/optional.h	
@@ -0,0 +1,396 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef ABSL_TYPES_INTERNAL_OPTIONAL_H_
+#define ABSL_TYPES_INTERNAL_OPTIONAL_H_
+
+#include <functional>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/inline_variable.h"
+#include "absl/memory/memory.h"
+#include "absl/meta/type_traits.h"
+#include "absl/utility/utility.h"
+
+// ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS
+//
+// Inheriting constructors is supported in GCC 4.8+, Clang 3.3+ and MSVC 2015.
+// __cpp_inheriting_constructors is a predefined macro and a recommended way to
+// check for this language feature, but GCC doesn't support it until 5.0 and
+// Clang doesn't support it until 3.6.
+// Also, MSVC 2015 has a bug: it doesn't inherit the constexpr template
+// constructor. For example, the following code won't work on MSVC 2015 Update3:
+// struct Base {
+//   int t;
+//   template <typename T>
+//   constexpr Base(T t_) : t(t_) {}
+// };
+// struct Foo : Base {
+//   using Base::Base;
+// }
+// constexpr Foo foo(0);  // doesn't work on MSVC 2015
+#if defined(__clang__)
+#if __has_feature(cxx_inheriting_constructors)
+#define ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS 1
+#endif
+#elif (defined(__GNUC__) &&                                       \
+       (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 8)) || \
+    (__cpp_inheriting_constructors >= 200802) ||                  \
+    (defined(_MSC_VER) && _MSC_VER >= 1910)
+#define ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS 1
+#endif
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Forward declaration
+template <typename T>
+class optional;
+
+namespace optional_internal {
+
+// This tag type is used as a constructor parameter type for `nullopt_t`.
+struct init_t {
+  explicit init_t() = default;
+};
+
+struct empty_struct {};
+
+// This class stores the data in optional<T>.
+// It is specialized based on whether T is trivially destructible.
+// This is the specialization for non trivially destructible type.
+template <typename T, bool unused = std::is_trivially_destructible<T>::value>
+class optional_data_dtor_base {
+  struct dummy_type {
+    static_assert(sizeof(T) % sizeof(empty_struct) == 0, "");
+    // Use an array to avoid GCC 6 placement-new warning.
+    empty_struct data[sizeof(T) / sizeof(empty_struct)];
+  };
+
+ protected:
+  // Whether there is data or not.
+  bool engaged_;
+  // Data storage
+  union {
+    T data_;
+    dummy_type dummy_;
+  };
+
+  void destruct() noexcept {
+    if (engaged_) {
+      data_.~T();
+      engaged_ = false;
+    }
+  }
+
+  // dummy_ must be initialized for constexpr constructor.
+  constexpr optional_data_dtor_base() noexcept : engaged_(false), dummy_{{}} {}
+
+  template <typename... Args>
+  constexpr explicit optional_data_dtor_base(in_place_t, Args&&... args)
+      : engaged_(true), data_(absl::forward<Args>(args)...) {}
+
+  ~optional_data_dtor_base() { destruct(); }
+};
+
+// Specialization for trivially destructible type.
+template <typename T>
+class optional_data_dtor_base<T, true> {
+  struct dummy_type {
+    static_assert(sizeof(T) % sizeof(empty_struct) == 0, "");
+    // Use array to avoid GCC 6 placement-new warning.
+    empty_struct data[sizeof(T) / sizeof(empty_struct)];
+  };
+
+ protected:
+  // Whether there is data or not.
+  bool engaged_;
+  // Data storage
+  union {
+    T data_;
+    dummy_type dummy_;
+  };
+  void destruct() noexcept { engaged_ = false; }
+
+  // dummy_ must be initialized for constexpr constructor.
+  constexpr optional_data_dtor_base() noexcept : engaged_(false), dummy_{{}} {}
+
+  template <typename... Args>
+  constexpr explicit optional_data_dtor_base(in_place_t, Args&&... args)
+      : engaged_(true), data_(absl::forward<Args>(args)...) {}
+};
+
+template <typename T>
+class optional_data_base : public optional_data_dtor_base<T> {
+ protected:
+  using base = optional_data_dtor_base<T>;
+#ifdef ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS
+  using base::base;
+#else
+  optional_data_base() = default;
+
+  template <typename... Args>
+  constexpr explicit optional_data_base(in_place_t t, Args&&... args)
+      : base(t, absl::forward<Args>(args)...) {}
+#endif
+
+  template <typename... Args>
+  void construct(Args&&... args) {
+    // Use dummy_'s address to work around casting cv-qualified T* to void*.
+    ::new (static_cast<void*>(&this->dummy_)) T(std::forward<Args>(args)...);
+    this->engaged_ = true;
+  }
+
+  template <typename U>
+  void assign(U&& u) {
+    if (this->engaged_) {
+      this->data_ = std::forward<U>(u);
+    } else {
+      construct(std::forward<U>(u));
+    }
+  }
+};
+
+// TODO(absl-team): Add another class using
+// std::is_trivially_move_constructible trait when available to match
+// http://cplusplus.github.io/LWG/lwg-defects.html#2900, for types that
+// have trivial move but nontrivial copy.
+// Also, we should be checking is_trivially_copyable here, which is not
+// supported now, so we use is_trivially_* traits instead.
+template <typename T,
+          bool unused = absl::is_trivially_copy_constructible<T>::value&&
+              absl::is_trivially_copy_assignable<typename std::remove_cv<
+                  T>::type>::value&& std::is_trivially_destructible<T>::value>
+class optional_data;
+
+// Trivially copyable types
+template <typename T>
+class optional_data<T, true> : public optional_data_base<T> {
+ protected:
+#ifdef ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS
+  using optional_data_base<T>::optional_data_base;
+#else
+  optional_data() = default;
+
+  template <typename... Args>
+  constexpr explicit optional_data(in_place_t t, Args&&... args)
+      : optional_data_base<T>(t, absl::forward<Args>(args)...) {}
+#endif
+};
+
+template <typename T>
+class optional_data<T, false> : public optional_data_base<T> {
+ protected:
+#ifdef ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS
+  using optional_data_base<T>::optional_data_base;
+#else
+  template <typename... Args>
+  constexpr explicit optional_data(in_place_t t, Args&&... args)
+      : optional_data_base<T>(t, absl::forward<Args>(args)...) {}
+#endif
+
+  optional_data() = default;
+
+  optional_data(const optional_data& rhs) : optional_data_base<T>() {
+    if (rhs.engaged_) {
+      this->construct(rhs.data_);
+    }
+  }
+
+  optional_data(optional_data&& rhs) noexcept(
+      absl::default_allocator_is_nothrow::value ||
+      std::is_nothrow_move_constructible<T>::value)
+      : optional_data_base<T>() {
+    if (rhs.engaged_) {
+      this->construct(std::move(rhs.data_));
+    }
+  }
+
+  optional_data& operator=(const optional_data& rhs) {
+    if (rhs.engaged_) {
+      this->assign(rhs.data_);
+    } else {
+      this->destruct();
+    }
+    return *this;
+  }
+
+  optional_data& operator=(optional_data&& rhs) noexcept(
+      std::is_nothrow_move_assignable<T>::value&&
+          std::is_nothrow_move_constructible<T>::value) {
+    if (rhs.engaged_) {
+      this->assign(std::move(rhs.data_));
+    } else {
+      this->destruct();
+    }
+    return *this;
+  }
+};
+
+// Ordered by level of restriction, from low to high.
+// Copyable implies movable.
+enum class copy_traits { copyable = 0, movable = 1, non_movable = 2 };
+
+// Base class for enabling/disabling copy/move constructor.
+template <copy_traits>
+class optional_ctor_base;
+
+template <>
+class optional_ctor_base<copy_traits::copyable> {
+ public:
+  constexpr optional_ctor_base() = default;
+  optional_ctor_base(const optional_ctor_base&) = default;
+  optional_ctor_base(optional_ctor_base&&) = default;
+  optional_ctor_base& operator=(const optional_ctor_base&) = default;
+  optional_ctor_base& operator=(optional_ctor_base&&) = default;
+};
+
+template <>
+class optional_ctor_base<copy_traits::movable> {
+ public:
+  constexpr optional_ctor_base() = default;
+  optional_ctor_base(const optional_ctor_base&) = delete;
+  optional_ctor_base(optional_ctor_base&&) = default;
+  optional_ctor_base& operator=(const optional_ctor_base&) = default;
+  optional_ctor_base& operator=(optional_ctor_base&&) = default;
+};
+
+template <>
+class optional_ctor_base<copy_traits::non_movable> {
+ public:
+  constexpr optional_ctor_base() = default;
+  optional_ctor_base(const optional_ctor_base&) = delete;
+  optional_ctor_base(optional_ctor_base&&) = delete;
+  optional_ctor_base& operator=(const optional_ctor_base&) = default;
+  optional_ctor_base& operator=(optional_ctor_base&&) = default;
+};
+
+// Base class for enabling/disabling copy/move assignment.
+template <copy_traits>
+class optional_assign_base;
+
+template <>
+class optional_assign_base<copy_traits::copyable> {
+ public:
+  constexpr optional_assign_base() = default;
+  optional_assign_base(const optional_assign_base&) = default;
+  optional_assign_base(optional_assign_base&&) = default;
+  optional_assign_base& operator=(const optional_assign_base&) = default;
+  optional_assign_base& operator=(optional_assign_base&&) = default;
+};
+
+template <>
+class optional_assign_base<copy_traits::movable> {
+ public:
+  constexpr optional_assign_base() = default;
+  optional_assign_base(const optional_assign_base&) = default;
+  optional_assign_base(optional_assign_base&&) = default;
+  optional_assign_base& operator=(const optional_assign_base&) = delete;
+  optional_assign_base& operator=(optional_assign_base&&) = default;
+};
+
+template <>
+class optional_assign_base<copy_traits::non_movable> {
+ public:
+  constexpr optional_assign_base() = default;
+  optional_assign_base(const optional_assign_base&) = default;
+  optional_assign_base(optional_assign_base&&) = default;
+  optional_assign_base& operator=(const optional_assign_base&) = delete;
+  optional_assign_base& operator=(optional_assign_base&&) = delete;
+};
+
+template <typename T>
+struct ctor_copy_traits {
+  static constexpr copy_traits traits =
+      std::is_copy_constructible<T>::value
+          ? copy_traits::copyable
+          : std::is_move_constructible<T>::value ? copy_traits::movable
+                                                 : copy_traits::non_movable;
+};
+
+template <typename T>
+struct assign_copy_traits {
+  static constexpr copy_traits traits =
+      absl::is_copy_assignable<T>::value && std::is_copy_constructible<T>::value
+          ? copy_traits::copyable
+          : absl::is_move_assignable<T>::value &&
+                    std::is_move_constructible<T>::value
+                ? copy_traits::movable
+                : copy_traits::non_movable;
+};
+
+// Whether T is constructible or convertible from optional<U>.
+template <typename T, typename U>
+struct is_constructible_convertible_from_optional
+    : std::integral_constant<
+          bool, std::is_constructible<T, optional<U>&>::value ||
+                    std::is_constructible<T, optional<U>&&>::value ||
+                    std::is_constructible<T, const optional<U>&>::value ||
+                    std::is_constructible<T, const optional<U>&&>::value ||
+                    std::is_convertible<optional<U>&, T>::value ||
+                    std::is_convertible<optional<U>&&, T>::value ||
+                    std::is_convertible<const optional<U>&, T>::value ||
+                    std::is_convertible<const optional<U>&&, T>::value> {};
+
+// Whether T is constructible or convertible or assignable from optional<U>.
+template <typename T, typename U>
+struct is_constructible_convertible_assignable_from_optional
+    : std::integral_constant<
+          bool, is_constructible_convertible_from_optional<T, U>::value ||
+                    std::is_assignable<T&, optional<U>&>::value ||
+                    std::is_assignable<T&, optional<U>&&>::value ||
+                    std::is_assignable<T&, const optional<U>&>::value ||
+                    std::is_assignable<T&, const optional<U>&&>::value> {};
+
+// Helper function used by [optional.relops], [optional.comp_with_t],
+// for checking whether an expression is convertible to bool.
+bool convertible_to_bool(bool);
+
+// Base class for std::hash<absl::optional<T>>:
+// If std::hash<std::remove_const_t<T>> is enabled, it provides operator() to
+// compute the hash; Otherwise, it is disabled.
+// Reference N4659 23.14.15 [unord.hash].
+template <typename T, typename = size_t>
+struct optional_hash_base {
+  optional_hash_base() = delete;
+  optional_hash_base(const optional_hash_base&) = delete;
+  optional_hash_base(optional_hash_base&&) = delete;
+  optional_hash_base& operator=(const optional_hash_base&) = delete;
+  optional_hash_base& operator=(optional_hash_base&&) = delete;
+};
+
+template <typename T>
+struct optional_hash_base<T, decltype(std::hash<absl::remove_const_t<T> >()(
+                                 std::declval<absl::remove_const_t<T> >()))> {
+  using argument_type = absl::optional<T>;
+  using result_type = size_t;
+  size_t operator()(const absl::optional<T>& opt) const {
+    absl::type_traits_internal::AssertHashEnabled<absl::remove_const_t<T>>();
+    if (opt) {
+      return std::hash<absl::remove_const_t<T> >()(*opt);
+    } else {
+      return static_cast<size_t>(0x297814aaad196e6dULL);
+    }
+  }
+};
+
+}  // namespace optional_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#undef ABSL_OPTIONAL_USE_INHERITING_CONSTRUCTORS
+
+#endif  // ABSL_TYPES_INTERNAL_OPTIONAL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/internal/span.h b/ChattingApp 000/Pods/abseil/absl/types/internal/span.h
new file mode 100644
index 0000000..112612f
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/internal/span.h	
@@ -0,0 +1,128 @@
+//
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef ABSL_TYPES_INTERNAL_SPAN_H_
+#define ABSL_TYPES_INTERNAL_SPAN_H_
+
+#include <algorithm>
+#include <cstddef>
+#include <string>
+#include <type_traits>
+
+#include "absl/algorithm/algorithm.h"
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+namespace span_internal {
+// A constexpr min function
+constexpr size_t Min(size_t a, size_t b) noexcept { return a < b ? a : b; }
+
+// Wrappers for access to container data pointers.
+template <typename C>
+constexpr auto GetDataImpl(C& c, char) noexcept  // NOLINT(runtime/references)
+    -> decltype(c.data()) {
+  return c.data();
+}
+
+// Before C++17, std::string::data returns a const char* in all cases.
+inline char* GetDataImpl(std::string& s,  // NOLINT(runtime/references)
+                         int) noexcept {
+  return &s[0];
+}
+
+template <typename C>
+constexpr auto GetData(C& c) noexcept  // NOLINT(runtime/references)
+    -> decltype(GetDataImpl(c, 0)) {
+  return GetDataImpl(c, 0);
+}
+
+// Detection idioms for size() and data().
+template <typename C>
+using HasSize =
+    std::is_integral<absl::decay_t<decltype(std::declval<C&>().size())>>;
+
+// We want to enable conversion from vector<T*> to Span<const T* const> but
+// disable conversion from vector<Derived> to Span<Base>. Here we use
+// the fact that U** is convertible to Q* const* if and only if Q is the same
+// type or a more cv-qualified version of U.  We also decay the result type of
+// data() to avoid problems with classes which have a member function data()
+// which returns a reference.
+template <typename T, typename C>
+using HasData =
+    std::is_convertible<absl::decay_t<decltype(GetData(std::declval<C&>()))>*,
+                        T* const*>;
+
+// Extracts value type from a Container
+template <typename C>
+struct ElementType {
+  using type = typename absl::remove_reference_t<C>::value_type;
+};
+
+template <typename T, size_t N>
+struct ElementType<T (&)[N]> {
+  using type = T;
+};
+
+template <typename C>
+using ElementT = typename ElementType<C>::type;
+
+template <typename T>
+using EnableIfMutable =
+    typename std::enable_if<!std::is_const<T>::value, int>::type;
+
+template <template <typename> class SpanT, typename T>
+bool EqualImpl(SpanT<T> a, SpanT<T> b) {
+  static_assert(std::is_const<T>::value, "");
+  return absl::equal(a.begin(), a.end(), b.begin(), b.end());
+}
+
+template <template <typename> class SpanT, typename T>
+bool LessThanImpl(SpanT<T> a, SpanT<T> b) {
+  // We can't use value_type since that is remove_cv_t<T>, so we go the long way
+  // around.
+  static_assert(std::is_const<T>::value, "");
+  return std::lexicographical_compare(a.begin(), a.end(), b.begin(), b.end());
+}
+
+// The `IsConvertible` classes here are needed because of the
+// `std::is_convertible` bug in libcxx when compiled with GCC. This build
+// configuration is used by Android NDK toolchain. Reference link:
+// https://bugs.llvm.org/show_bug.cgi?id=27538.
+template <typename From, typename To>
+struct IsConvertibleHelper {
+ private:
+  static std::true_type testval(To);
+  static std::false_type testval(...);
+
+ public:
+  using type = decltype(testval(std::declval<From>()));
+};
+
+template <typename From, typename To>
+struct IsConvertible : IsConvertibleHelper<From, To>::type {};
+
+// TODO(zhangxy): replace `IsConvertible` with `std::is_convertible` once the
+// older version of libcxx is not supported.
+template <typename From, typename To>
+using EnableIfConvertibleTo =
+    typename std::enable_if<IsConvertible<From, To>::value>::type;
+}  // namespace span_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TYPES_INTERNAL_SPAN_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/internal/variant.h b/ChattingApp 000/Pods/abseil/absl/types/internal/variant.h
new file mode 100644
index 0000000..71bd3ad
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/internal/variant.h	
@@ -0,0 +1,1646 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Implementation details of absl/types/variant.h, pulled into a
+// separate file to avoid cluttering the top of the API header with
+// implementation details.
+
+#ifndef ABSL_TYPES_variant_internal_H_
+#define ABSL_TYPES_variant_internal_H_
+
+#include <cassert>
+#include <cstddef>
+#include <cstdlib>
+#include <memory>
+#include <stdexcept>
+#include <tuple>
+#include <type_traits>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/identity.h"
+#include "absl/base/internal/inline_variable.h"
+#include "absl/base/internal/invoke.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/bad_variant_access.h"
+#include "absl/utility/utility.h"
+
+#if !defined(ABSL_USES_STD_VARIANT)
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+template <class... Types>
+class variant;
+
+ABSL_INTERNAL_INLINE_CONSTEXPR(size_t, variant_npos, -1);
+
+template <class T>
+struct variant_size;
+
+template <std::size_t I, class T>
+struct variant_alternative;
+
+namespace variant_internal {
+
+// NOTE: See specializations below for details.
+template <std::size_t I, class T>
+struct VariantAlternativeSfinae {};
+
+// Requires: I < variant_size_v<T>.
+//
+// Value: The Ith type of Types...
+template <std::size_t I, class T0, class... Tn>
+struct VariantAlternativeSfinae<I, variant<T0, Tn...>>
+    : VariantAlternativeSfinae<I - 1, variant<Tn...>> {};
+
+// Value: T0
+template <class T0, class... Ts>
+struct VariantAlternativeSfinae<0, variant<T0, Ts...>> {
+  using type = T0;
+};
+
+template <std::size_t I, class T>
+using VariantAlternativeSfinaeT = typename VariantAlternativeSfinae<I, T>::type;
+
+// NOTE: Requires T to be a reference type.
+template <class T, class U>
+struct GiveQualsTo;
+
+template <class T, class U>
+struct GiveQualsTo<T&, U> {
+  using type = U&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<T&&, U> {
+  using type = U&&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<const T&, U> {
+  using type = const U&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<const T&&, U> {
+  using type = const U&&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<volatile T&, U> {
+  using type = volatile U&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<volatile T&&, U> {
+  using type = volatile U&&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<volatile const T&, U> {
+  using type = volatile const U&;
+};
+
+template <class T, class U>
+struct GiveQualsTo<volatile const T&&, U> {
+  using type = volatile const U&&;
+};
+
+template <class T, class U>
+using GiveQualsToT = typename GiveQualsTo<T, U>::type;
+
+// Convenience alias, since size_t integral_constant is used a lot in this file.
+template <std::size_t I>
+using SizeT = std::integral_constant<std::size_t, I>;
+
+using NPos = SizeT<variant_npos>;
+
+template <class Variant, class T, class = void>
+struct IndexOfConstructedType {};
+
+template <std::size_t I, class Variant>
+struct VariantAccessResultImpl;
+
+template <std::size_t I, template <class...> class Variantemplate, class... T>
+struct VariantAccessResultImpl<I, Variantemplate<T...>&> {
+  using type = typename absl::variant_alternative<I, variant<T...>>::type&;
+};
+
+template <std::size_t I, template <class...> class Variantemplate, class... T>
+struct VariantAccessResultImpl<I, const Variantemplate<T...>&> {
+  using type =
+      const typename absl::variant_alternative<I, variant<T...>>::type&;
+};
+
+template <std::size_t I, template <class...> class Variantemplate, class... T>
+struct VariantAccessResultImpl<I, Variantemplate<T...>&&> {
+  using type = typename absl::variant_alternative<I, variant<T...>>::type&&;
+};
+
+template <std::size_t I, template <class...> class Variantemplate, class... T>
+struct VariantAccessResultImpl<I, const Variantemplate<T...>&&> {
+  using type =
+      const typename absl::variant_alternative<I, variant<T...>>::type&&;
+};
+
+template <std::size_t I, class Variant>
+using VariantAccessResult =
+    typename VariantAccessResultImpl<I, Variant&&>::type;
+
+// NOTE: This is used instead of std::array to reduce instantiation overhead.
+template <class T, std::size_t Size>
+struct SimpleArray {
+  static_assert(Size != 0, "");
+  T value[Size];
+};
+
+template <class T>
+struct AccessedType {
+  using type = T;
+};
+
+template <class T>
+using AccessedTypeT = typename AccessedType<T>::type;
+
+template <class T, std::size_t Size>
+struct AccessedType<SimpleArray<T, Size>> {
+  using type = AccessedTypeT<T>;
+};
+
+template <class T>
+constexpr T AccessSimpleArray(const T& value) {
+  return value;
+}
+
+template <class T, std::size_t Size, class... SizeT>
+constexpr AccessedTypeT<T> AccessSimpleArray(const SimpleArray<T, Size>& table,
+                                             std::size_t head_index,
+                                             SizeT... tail_indices) {
+  return AccessSimpleArray(table.value[head_index], tail_indices...);
+}
+
+// Note: Intentionally is an alias.
+template <class T>
+using AlwaysZero = SizeT<0>;
+
+template <class Op, class... Vs>
+struct VisitIndicesResultImpl {
+  using type = absl::result_of_t<Op(AlwaysZero<Vs>...)>;
+};
+
+template <class Op, class... Vs>
+using VisitIndicesResultT = typename VisitIndicesResultImpl<Op, Vs...>::type;
+
+template <class ReturnType, class FunctionObject, class EndIndices,
+          class BoundIndices>
+struct MakeVisitationMatrix;
+
+template <class ReturnType, class FunctionObject, std::size_t... Indices>
+constexpr ReturnType call_with_indices(FunctionObject&& function) {
+  static_assert(
+      std::is_same<ReturnType, decltype(std::declval<FunctionObject>()(
+                                   SizeT<Indices>()...))>::value,
+      "Not all visitation overloads have the same return type.");
+  return absl::forward<FunctionObject>(function)(SizeT<Indices>()...);
+}
+
+template <class ReturnType, class FunctionObject, std::size_t... BoundIndices>
+struct MakeVisitationMatrix<ReturnType, FunctionObject, index_sequence<>,
+                            index_sequence<BoundIndices...>> {
+  using ResultType = ReturnType (*)(FunctionObject&&);
+  static constexpr ResultType Run() {
+    return &call_with_indices<ReturnType, FunctionObject,
+                              (BoundIndices - 1)...>;
+  }
+};
+
+template <typename Is, std::size_t J>
+struct AppendToIndexSequence;
+
+template <typename Is, std::size_t J>
+using AppendToIndexSequenceT = typename AppendToIndexSequence<Is, J>::type;
+
+template <std::size_t... Is, std::size_t J>
+struct AppendToIndexSequence<index_sequence<Is...>, J> {
+  using type = index_sequence<Is..., J>;
+};
+
+template <class ReturnType, class FunctionObject, class EndIndices,
+          class CurrIndices, class BoundIndices>
+struct MakeVisitationMatrixImpl;
+
+template <class ReturnType, class FunctionObject, class EndIndices,
+          std::size_t... CurrIndices, class BoundIndices>
+struct MakeVisitationMatrixImpl<ReturnType, FunctionObject, EndIndices,
+                                index_sequence<CurrIndices...>, BoundIndices> {
+  using ResultType = SimpleArray<
+      typename MakeVisitationMatrix<ReturnType, FunctionObject, EndIndices,
+                                    index_sequence<>>::ResultType,
+      sizeof...(CurrIndices)>;
+
+  static constexpr ResultType Run() {
+    return {{MakeVisitationMatrix<
+        ReturnType, FunctionObject, EndIndices,
+        AppendToIndexSequenceT<BoundIndices, CurrIndices>>::Run()...}};
+  }
+};
+
+template <class ReturnType, class FunctionObject, std::size_t HeadEndIndex,
+          std::size_t... TailEndIndices, std::size_t... BoundIndices>
+struct MakeVisitationMatrix<ReturnType, FunctionObject,
+                            index_sequence<HeadEndIndex, TailEndIndices...>,
+                            index_sequence<BoundIndices...>>
+    : MakeVisitationMatrixImpl<ReturnType, FunctionObject,
+                               index_sequence<TailEndIndices...>,
+                               absl::make_index_sequence<HeadEndIndex>,
+                               index_sequence<BoundIndices...>> {};
+
+struct UnreachableSwitchCase {
+  template <class Op>
+  [[noreturn]] static VisitIndicesResultT<Op, std::size_t> Run(
+      Op&& /*ignored*/) {
+#if ABSL_HAVE_BUILTIN(__builtin_unreachable) || \
+    (defined(__GNUC__) && !defined(__clang__))
+    __builtin_unreachable();
+#elif defined(_MSC_VER)
+    __assume(false);
+#else
+    // Try to use assert of false being identified as an unreachable intrinsic.
+    // NOTE: We use assert directly to increase chances of exploiting an assume
+    //       intrinsic.
+    assert(false);  // NOLINT
+
+    // Hack to silence potential no return warning -- cause an infinite loop.
+    return Run(absl::forward<Op>(op));
+#endif  // Checks for __builtin_unreachable
+  }
+};
+
+template <class Op, std::size_t I>
+struct ReachableSwitchCase {
+  static VisitIndicesResultT<Op, std::size_t> Run(Op&& op) {
+    return absl::base_internal::Invoke(absl::forward<Op>(op), SizeT<I>());
+  }
+};
+
+// The number 33 is just a guess at a reasonable maximum to our switch. It is
+// not based on any analysis. The reason it is a power of 2 plus 1 instead of a
+// power of 2 is because the number was picked to correspond to a power of 2
+// amount of "normal" alternatives, plus one for the possibility of the user
+// providing "monostate" in addition to the more natural alternatives.
+ABSL_INTERNAL_INLINE_CONSTEXPR(std::size_t, MaxUnrolledVisitCases, 33);
+
+// Note: The default-definition is for unreachable cases.
+template <bool IsReachable>
+struct PickCaseImpl {
+  template <class Op, std::size_t I>
+  using Apply = UnreachableSwitchCase;
+};
+
+template <>
+struct PickCaseImpl</*IsReachable =*/true> {
+  template <class Op, std::size_t I>
+  using Apply = ReachableSwitchCase<Op, I>;
+};
+
+// Note: This form of dance with template aliases is to make sure that we
+//       instantiate a number of templates proportional to the number of variant
+//       alternatives rather than a number of templates proportional to our
+//       maximum unrolled amount of visitation cases (aliases are effectively
+//       "free" whereas other template instantiations are costly).
+template <class Op, std::size_t I, std::size_t EndIndex>
+using PickCase = typename PickCaseImpl<(I < EndIndex)>::template Apply<Op, I>;
+
+template <class ReturnType>
+[[noreturn]] ReturnType TypedThrowBadVariantAccess() {
+  absl::variant_internal::ThrowBadVariantAccess();
+}
+
+// Given N variant sizes, determine the number of cases there would need to be
+// in a single switch-statement that would cover every possibility in the
+// corresponding N-ary visit operation.
+template <std::size_t... NumAlternatives>
+struct NumCasesOfSwitch;
+
+template <std::size_t HeadNumAlternatives, std::size_t... TailNumAlternatives>
+struct NumCasesOfSwitch<HeadNumAlternatives, TailNumAlternatives...> {
+  static constexpr std::size_t value =
+      (HeadNumAlternatives + 1) *
+      NumCasesOfSwitch<TailNumAlternatives...>::value;
+};
+
+template <>
+struct NumCasesOfSwitch<> {
+  static constexpr std::size_t value = 1;
+};
+
+// A switch statement optimizes better than the table of function pointers.
+template <std::size_t EndIndex>
+struct VisitIndicesSwitch {
+  static_assert(EndIndex <= MaxUnrolledVisitCases,
+                "Maximum unrolled switch size exceeded.");
+
+  template <class Op>
+  static VisitIndicesResultT<Op, std::size_t> Run(Op&& op, std::size_t i) {
+    switch (i) {
+      case 0:
+        return PickCase<Op, 0, EndIndex>::Run(absl::forward<Op>(op));
+      case 1:
+        return PickCase<Op, 1, EndIndex>::Run(absl::forward<Op>(op));
+      case 2:
+        return PickCase<Op, 2, EndIndex>::Run(absl::forward<Op>(op));
+      case 3:
+        return PickCase<Op, 3, EndIndex>::Run(absl::forward<Op>(op));
+      case 4:
+        return PickCase<Op, 4, EndIndex>::Run(absl::forward<Op>(op));
+      case 5:
+        return PickCase<Op, 5, EndIndex>::Run(absl::forward<Op>(op));
+      case 6:
+        return PickCase<Op, 6, EndIndex>::Run(absl::forward<Op>(op));
+      case 7:
+        return PickCase<Op, 7, EndIndex>::Run(absl::forward<Op>(op));
+      case 8:
+        return PickCase<Op, 8, EndIndex>::Run(absl::forward<Op>(op));
+      case 9:
+        return PickCase<Op, 9, EndIndex>::Run(absl::forward<Op>(op));
+      case 10:
+        return PickCase<Op, 10, EndIndex>::Run(absl::forward<Op>(op));
+      case 11:
+        return PickCase<Op, 11, EndIndex>::Run(absl::forward<Op>(op));
+      case 12:
+        return PickCase<Op, 12, EndIndex>::Run(absl::forward<Op>(op));
+      case 13:
+        return PickCase<Op, 13, EndIndex>::Run(absl::forward<Op>(op));
+      case 14:
+        return PickCase<Op, 14, EndIndex>::Run(absl::forward<Op>(op));
+      case 15:
+        return PickCase<Op, 15, EndIndex>::Run(absl::forward<Op>(op));
+      case 16:
+        return PickCase<Op, 16, EndIndex>::Run(absl::forward<Op>(op));
+      case 17:
+        return PickCase<Op, 17, EndIndex>::Run(absl::forward<Op>(op));
+      case 18:
+        return PickCase<Op, 18, EndIndex>::Run(absl::forward<Op>(op));
+      case 19:
+        return PickCase<Op, 19, EndIndex>::Run(absl::forward<Op>(op));
+      case 20:
+        return PickCase<Op, 20, EndIndex>::Run(absl::forward<Op>(op));
+      case 21:
+        return PickCase<Op, 21, EndIndex>::Run(absl::forward<Op>(op));
+      case 22:
+        return PickCase<Op, 22, EndIndex>::Run(absl::forward<Op>(op));
+      case 23:
+        return PickCase<Op, 23, EndIndex>::Run(absl::forward<Op>(op));
+      case 24:
+        return PickCase<Op, 24, EndIndex>::Run(absl::forward<Op>(op));
+      case 25:
+        return PickCase<Op, 25, EndIndex>::Run(absl::forward<Op>(op));
+      case 26:
+        return PickCase<Op, 26, EndIndex>::Run(absl::forward<Op>(op));
+      case 27:
+        return PickCase<Op, 27, EndIndex>::Run(absl::forward<Op>(op));
+      case 28:
+        return PickCase<Op, 28, EndIndex>::Run(absl::forward<Op>(op));
+      case 29:
+        return PickCase<Op, 29, EndIndex>::Run(absl::forward<Op>(op));
+      case 30:
+        return PickCase<Op, 30, EndIndex>::Run(absl::forward<Op>(op));
+      case 31:
+        return PickCase<Op, 31, EndIndex>::Run(absl::forward<Op>(op));
+      case 32:
+        return PickCase<Op, 32, EndIndex>::Run(absl::forward<Op>(op));
+      default:
+        ABSL_ASSERT(i == variant_npos);
+        return absl::base_internal::Invoke(absl::forward<Op>(op), NPos());
+    }
+  }
+};
+
+template <std::size_t... EndIndices>
+struct VisitIndicesFallback {
+  template <class Op, class... SizeT>
+  static VisitIndicesResultT<Op, SizeT...> Run(Op&& op, SizeT... indices) {
+    return AccessSimpleArray(
+        MakeVisitationMatrix<VisitIndicesResultT<Op, SizeT...>, Op,
+                             index_sequence<(EndIndices + 1)...>,
+                             index_sequence<>>::Run(),
+        (indices + 1)...)(absl::forward<Op>(op));
+  }
+};
+
+// Take an N-dimensional series of indices and convert them into a single index
+// without loss of information. The purpose of this is to be able to convert an
+// N-ary visit operation into a single switch statement.
+template <std::size_t...>
+struct FlattenIndices;
+
+template <std::size_t HeadSize, std::size_t... TailSize>
+struct FlattenIndices<HeadSize, TailSize...> {
+  template<class... SizeType>
+  static constexpr std::size_t Run(std::size_t head, SizeType... tail) {
+    return head + HeadSize * FlattenIndices<TailSize...>::Run(tail...);
+  }
+};
+
+template <>
+struct FlattenIndices<> {
+  static constexpr std::size_t Run() { return 0; }
+};
+
+// Take a single "flattened" index (flattened by FlattenIndices) and determine
+// the value of the index of one of the logically represented dimensions.
+template <std::size_t I, std::size_t IndexToGet, std::size_t HeadSize,
+          std::size_t... TailSize>
+struct UnflattenIndex {
+  static constexpr std::size_t value =
+      UnflattenIndex<I / HeadSize, IndexToGet - 1, TailSize...>::value;
+};
+
+template <std::size_t I, std::size_t HeadSize, std::size_t... TailSize>
+struct UnflattenIndex<I, 0, HeadSize, TailSize...> {
+  static constexpr std::size_t value = (I % HeadSize);
+};
+
+// The backend for converting an N-ary visit operation into a unary visit.
+template <class IndexSequence, std::size_t... EndIndices>
+struct VisitIndicesVariadicImpl;
+
+template <std::size_t... N, std::size_t... EndIndices>
+struct VisitIndicesVariadicImpl<absl::index_sequence<N...>, EndIndices...> {
+  // A type that can take an N-ary function object and converts it to a unary
+  // function object that takes a single, flattened index, and "unflattens" it
+  // into its individual dimensions when forwarding to the wrapped object.
+  template <class Op>
+  struct FlattenedOp {
+    template <std::size_t I>
+    VisitIndicesResultT<Op, decltype(EndIndices)...> operator()(
+        SizeT<I> /*index*/) && {
+      return base_internal::Invoke(
+          absl::forward<Op>(op),
+          SizeT<UnflattenIndex<I, N, (EndIndices + 1)...>::value -
+                std::size_t{1}>()...);
+    }
+
+    Op&& op;
+  };
+
+  template <class Op, class... SizeType>
+  static VisitIndicesResultT<Op, decltype(EndIndices)...> Run(
+      Op&& op, SizeType... i) {
+    return VisitIndicesSwitch<NumCasesOfSwitch<EndIndices...>::value>::Run(
+        FlattenedOp<Op>{absl::forward<Op>(op)},
+        FlattenIndices<(EndIndices + std::size_t{1})...>::Run(
+            (i + std::size_t{1})...));
+  }
+};
+
+template <std::size_t... EndIndices>
+struct VisitIndicesVariadic
+    : VisitIndicesVariadicImpl<absl::make_index_sequence<sizeof...(EndIndices)>,
+                               EndIndices...> {};
+
+// This implementation will flatten N-ary visit operations into a single switch
+// statement when the number of cases would be less than our maximum specified
+// switch-statement size.
+// TODO(calabrese)
+//   Based on benchmarks, determine whether the function table approach actually
+//   does optimize better than a chain of switch statements and possibly update
+//   the implementation accordingly. Also consider increasing the maximum switch
+//   size.
+template <std::size_t... EndIndices>
+struct VisitIndices
+    : absl::conditional_t<(NumCasesOfSwitch<EndIndices...>::value <=
+                           MaxUnrolledVisitCases),
+                          VisitIndicesVariadic<EndIndices...>,
+                          VisitIndicesFallback<EndIndices...>> {};
+
+template <std::size_t EndIndex>
+struct VisitIndices<EndIndex>
+    : absl::conditional_t<(EndIndex <= MaxUnrolledVisitCases),
+                          VisitIndicesSwitch<EndIndex>,
+                          VisitIndicesFallback<EndIndex>> {};
+
+// Suppress bogus warning on MSVC: MSVC complains that the `reinterpret_cast`
+// below is returning the address of a temporary or local object.
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4172)
+#endif  // _MSC_VER
+
+// TODO(calabrese) std::launder
+// TODO(calabrese) constexpr
+// NOTE: DO NOT REMOVE the `inline` keyword as it is necessary to work around a
+// MSVC bug. See https://github.com/abseil/abseil-cpp/issues/129 for details.
+template <class Self, std::size_t I>
+inline VariantAccessResult<I, Self> AccessUnion(Self&& self, SizeT<I> /*i*/) {
+  return reinterpret_cast<VariantAccessResult<I, Self>>(self);
+}
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif  // _MSC_VER
+
+template <class T>
+void DeducedDestroy(T& self) {  // NOLINT
+  self.~T();
+}
+
+// NOTE: This type exists as a single entity for variant and its bases to
+// befriend. It contains helper functionality that manipulates the state of the
+// variant, such as the implementation of things like assignment and emplace
+// operations.
+struct VariantCoreAccess {
+  template <class VariantType>
+  static typename VariantType::Variant& Derived(VariantType& self) {  // NOLINT
+    return static_cast<typename VariantType::Variant&>(self);
+  }
+
+  template <class VariantType>
+  static const typename VariantType::Variant& Derived(
+      const VariantType& self) {  // NOLINT
+    return static_cast<const typename VariantType::Variant&>(self);
+  }
+
+  template <class VariantType>
+  static void Destroy(VariantType& self) {  // NOLINT
+    Derived(self).destroy();
+    self.index_ = absl::variant_npos;
+  }
+
+  template <class Variant>
+  static void SetIndex(Variant& self, std::size_t i) {  // NOLINT
+    self.index_ = i;
+  }
+
+  template <class Variant>
+  static void InitFrom(Variant& self, Variant&& other) {  // NOLINT
+    VisitIndices<absl::variant_size<Variant>::value>::Run(
+        InitFromVisitor<Variant, Variant&&>{&self,
+                                            std::forward<Variant>(other)},
+        other.index());
+    self.index_ = other.index();
+  }
+
+  // Access a variant alternative, assuming the index is correct.
+  template <std::size_t I, class Variant>
+  static VariantAccessResult<I, Variant> Access(Variant&& self) {
+    // This cast instead of invocation of AccessUnion with an rvalue is a
+    // workaround for msvc. Without this there is a runtime failure when dealing
+    // with rvalues.
+    // TODO(calabrese) Reduce test case and find a simpler workaround.
+    return static_cast<VariantAccessResult<I, Variant>>(
+        variant_internal::AccessUnion(self.state_, SizeT<I>()));
+  }
+
+  // Access a variant alternative, throwing if the index is incorrect.
+  template <std::size_t I, class Variant>
+  static VariantAccessResult<I, Variant> CheckedAccess(Variant&& self) {
+    if (ABSL_PREDICT_FALSE(self.index_ != I)) {
+      TypedThrowBadVariantAccess<VariantAccessResult<I, Variant>>();
+    }
+
+    return Access<I>(absl::forward<Variant>(self));
+  }
+
+  // The implementation of the move-assignment operation for a variant.
+  template <class VType>
+  struct MoveAssignVisitor {
+    using DerivedType = typename VType::Variant;
+    template <std::size_t NewIndex>
+    void operator()(SizeT<NewIndex> /*new_i*/) const {
+      if (left->index_ == NewIndex) {
+        Access<NewIndex>(*left) = std::move(Access<NewIndex>(*right));
+      } else {
+        Derived(*left).template emplace<NewIndex>(
+            std::move(Access<NewIndex>(*right)));
+      }
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*new_i*/) const {
+      Destroy(*left);
+    }
+
+    VType* left;
+    VType* right;
+  };
+
+  template <class VType>
+  static MoveAssignVisitor<VType> MakeMoveAssignVisitor(VType* left,
+                                                        VType* other) {
+    return {left, other};
+  }
+
+  // The implementation of the assignment operation for a variant.
+  template <class VType>
+  struct CopyAssignVisitor {
+    using DerivedType = typename VType::Variant;
+    template <std::size_t NewIndex>
+    void operator()(SizeT<NewIndex> /*new_i*/) const {
+      using New =
+          typename absl::variant_alternative<NewIndex, DerivedType>::type;
+
+      if (left->index_ == NewIndex) {
+        Access<NewIndex>(*left) = Access<NewIndex>(*right);
+      } else if (std::is_nothrow_copy_constructible<New>::value ||
+                 !std::is_nothrow_move_constructible<New>::value) {
+        Derived(*left).template emplace<NewIndex>(Access<NewIndex>(*right));
+      } else {
+        Derived(*left) = DerivedType(Derived(*right));
+      }
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*new_i*/) const {
+      Destroy(*left);
+    }
+
+    VType* left;
+    const VType* right;
+  };
+
+  template <class VType>
+  static CopyAssignVisitor<VType> MakeCopyAssignVisitor(VType* left,
+                                                        const VType& other) {
+    return {left, &other};
+  }
+
+  // The implementation of conversion-assignment operations for variant.
+  template <class Left, class QualifiedNew>
+  struct ConversionAssignVisitor {
+    using NewIndex =
+        variant_internal::IndexOfConstructedType<Left, QualifiedNew>;
+
+    void operator()(SizeT<NewIndex::value> /*old_i*/
+                    ) const {
+      Access<NewIndex::value>(*left) = absl::forward<QualifiedNew>(other);
+    }
+
+    template <std::size_t OldIndex>
+    void operator()(SizeT<OldIndex> /*old_i*/
+                    ) const {
+      using New =
+          typename absl::variant_alternative<NewIndex::value, Left>::type;
+      if (std::is_nothrow_constructible<New, QualifiedNew>::value ||
+          !std::is_nothrow_move_constructible<New>::value) {
+        left->template emplace<NewIndex::value>(
+            absl::forward<QualifiedNew>(other));
+      } else {
+        // the standard says "equivalent to
+        // operator=(variant(std::forward<T>(t)))", but we use `emplace` here
+        // because the variant's move assignment operator could be deleted.
+        left->template emplace<NewIndex::value>(
+            New(absl::forward<QualifiedNew>(other)));
+      }
+    }
+
+    Left* left;
+    QualifiedNew&& other;
+  };
+
+  template <class Left, class QualifiedNew>
+  static ConversionAssignVisitor<Left, QualifiedNew>
+  MakeConversionAssignVisitor(Left* left, QualifiedNew&& qual) {
+    return {left, absl::forward<QualifiedNew>(qual)};
+  }
+
+  // Backend for operations for `emplace()` which destructs `*self` then
+  // construct a new alternative with `Args...`.
+  template <std::size_t NewIndex, class Self, class... Args>
+  static typename absl::variant_alternative<NewIndex, Self>::type& Replace(
+      Self* self, Args&&... args) {
+    Destroy(*self);
+    using New = typename absl::variant_alternative<NewIndex, Self>::type;
+    New* const result = ::new (static_cast<void*>(&self->state_))
+        New(absl::forward<Args>(args)...);
+    self->index_ = NewIndex;
+    return *result;
+  }
+
+  template <class LeftVariant, class QualifiedRightVariant>
+  struct InitFromVisitor {
+    template <std::size_t NewIndex>
+    void operator()(SizeT<NewIndex> /*new_i*/) const {
+      using Alternative =
+          typename variant_alternative<NewIndex, LeftVariant>::type;
+      ::new (static_cast<void*>(&left->state_)) Alternative(
+          Access<NewIndex>(std::forward<QualifiedRightVariant>(right)));
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*new_i*/) const {
+      // This space intentionally left blank.
+    }
+    LeftVariant* left;
+    QualifiedRightVariant&& right;
+  };
+};
+
+template <class Expected, class... T>
+struct IndexOfImpl;
+
+template <class Expected>
+struct IndexOfImpl<Expected> {
+  using IndexFromEnd = SizeT<0>;
+  using MatchedIndexFromEnd = IndexFromEnd;
+  using MultipleMatches = std::false_type;
+};
+
+template <class Expected, class Head, class... Tail>
+struct IndexOfImpl<Expected, Head, Tail...> : IndexOfImpl<Expected, Tail...> {
+  using IndexFromEnd =
+      SizeT<IndexOfImpl<Expected, Tail...>::IndexFromEnd::value + 1>;
+};
+
+template <class Expected, class... Tail>
+struct IndexOfImpl<Expected, Expected, Tail...>
+    : IndexOfImpl<Expected, Tail...> {
+  using IndexFromEnd =
+      SizeT<IndexOfImpl<Expected, Tail...>::IndexFromEnd::value + 1>;
+  using MatchedIndexFromEnd = IndexFromEnd;
+  using MultipleMatches = std::integral_constant<
+      bool, IndexOfImpl<Expected, Tail...>::MatchedIndexFromEnd::value != 0>;
+};
+
+template <class Expected, class... Types>
+struct IndexOfMeta {
+  using Results = IndexOfImpl<Expected, Types...>;
+  static_assert(!Results::MultipleMatches::value,
+                "Attempted to access a variant by specifying a type that "
+                "matches more than one alternative.");
+  static_assert(Results::MatchedIndexFromEnd::value != 0,
+                "Attempted to access a variant by specifying a type that does "
+                "not match any alternative.");
+  using type = SizeT<sizeof...(Types) - Results::MatchedIndexFromEnd::value>;
+};
+
+template <class Expected, class... Types>
+using IndexOf = typename IndexOfMeta<Expected, Types...>::type;
+
+template <class Variant, class T, std::size_t CurrIndex>
+struct UnambiguousIndexOfImpl;
+
+// Terminating case encountered once we've checked all of the alternatives
+template <class T, std::size_t CurrIndex>
+struct UnambiguousIndexOfImpl<variant<>, T, CurrIndex> : SizeT<CurrIndex> {};
+
+// Case where T is not Head
+template <class Head, class... Tail, class T, std::size_t CurrIndex>
+struct UnambiguousIndexOfImpl<variant<Head, Tail...>, T, CurrIndex>
+    : UnambiguousIndexOfImpl<variant<Tail...>, T, CurrIndex + 1>::type {};
+
+// Case where T is Head
+template <class Head, class... Tail, std::size_t CurrIndex>
+struct UnambiguousIndexOfImpl<variant<Head, Tail...>, Head, CurrIndex>
+    : SizeT<UnambiguousIndexOfImpl<variant<Tail...>, Head, 0>::value ==
+                    sizeof...(Tail)
+                ? CurrIndex
+                : CurrIndex + sizeof...(Tail) + 1> {};
+
+template <class Variant, class T>
+struct UnambiguousIndexOf;
+
+struct NoMatch {
+  struct type {};
+};
+
+template <class... Alts, class T>
+struct UnambiguousIndexOf<variant<Alts...>, T>
+    : std::conditional<UnambiguousIndexOfImpl<variant<Alts...>, T, 0>::value !=
+                           sizeof...(Alts),
+                       UnambiguousIndexOfImpl<variant<Alts...>, T, 0>,
+                       NoMatch>::type::type {};
+
+template <class T, std::size_t /*Dummy*/>
+using UnambiguousTypeOfImpl = T;
+
+template <class Variant, class T>
+using UnambiguousTypeOfT =
+    UnambiguousTypeOfImpl<T, UnambiguousIndexOf<Variant, T>::value>;
+
+template <class H, class... T>
+class VariantStateBase;
+
+// This is an implementation of the "imaginary function" that is described in
+// [variant.ctor]
+// It is used in order to determine which alternative to construct during
+// initialization from some type T.
+template <class Variant, std::size_t I = 0>
+struct ImaginaryFun;
+
+template <std::size_t I>
+struct ImaginaryFun<variant<>, I> {
+  static void Run() = delete;
+};
+
+template <class H, class... T, std::size_t I>
+struct ImaginaryFun<variant<H, T...>, I> : ImaginaryFun<variant<T...>, I + 1> {
+  using ImaginaryFun<variant<T...>, I + 1>::Run;
+
+  // NOTE: const& and && are used instead of by-value due to lack of guaranteed
+  // move elision of C++17. This may have other minor differences, but tests
+  // pass.
+  static SizeT<I> Run(const H&, SizeT<I>);
+  static SizeT<I> Run(H&&, SizeT<I>);
+};
+
+// The following metafunctions are used in constructor and assignment
+// constraints.
+template <class Self, class T>
+struct IsNeitherSelfNorInPlace : std::true_type {};
+
+template <class Self>
+struct IsNeitherSelfNorInPlace<Self, Self> : std::false_type {};
+
+template <class Self, class T>
+struct IsNeitherSelfNorInPlace<Self, in_place_type_t<T>> : std::false_type {};
+
+template <class Self, std::size_t I>
+struct IsNeitherSelfNorInPlace<Self, in_place_index_t<I>> : std::false_type {};
+
+template <class Variant, class T, class = void>
+struct ConversionIsPossibleImpl : std::false_type {};
+
+template <class Variant, class T>
+struct ConversionIsPossibleImpl<
+    Variant, T,
+    void_t<decltype(ImaginaryFun<Variant>::Run(std::declval<T>(), {}))>>
+    : std::true_type {};
+
+template <class Variant, class T>
+struct ConversionIsPossible : ConversionIsPossibleImpl<Variant, T>::type {};
+
+template <class Variant, class T>
+struct IndexOfConstructedType<
+    Variant, T,
+    void_t<decltype(ImaginaryFun<Variant>::Run(std::declval<T>(), {}))>>
+    : decltype(ImaginaryFun<Variant>::Run(std::declval<T>(), {})) {};
+
+template <std::size_t... Is>
+struct ContainsVariantNPos
+    : absl::negation<std::is_same<  // NOLINT
+          absl::integer_sequence<bool, 0 <= Is...>,
+          absl::integer_sequence<bool, Is != absl::variant_npos...>>> {};
+
+template <class Op, class... QualifiedVariants>
+using RawVisitResult =
+    absl::result_of_t<Op(VariantAccessResult<0, QualifiedVariants>...)>;
+
+// NOTE: The spec requires that all return-paths yield the same type and is not
+// SFINAE-friendly, so we can deduce the return type by examining the first
+// result. If it's not callable, then we get an error, but are compliant and
+// fast to compile.
+// TODO(calabrese) Possibly rewrite in a way that yields better compile errors
+// at the cost of longer compile-times.
+template <class Op, class... QualifiedVariants>
+struct VisitResultImpl {
+  using type =
+      absl::result_of_t<Op(VariantAccessResult<0, QualifiedVariants>...)>;
+};
+
+// Done in two steps intentionally so that we don't cause substitution to fail.
+template <class Op, class... QualifiedVariants>
+using VisitResult = typename VisitResultImpl<Op, QualifiedVariants...>::type;
+
+template <class Op, class... QualifiedVariants>
+struct PerformVisitation {
+  using ReturnType = VisitResult<Op, QualifiedVariants...>;
+
+  template <std::size_t... Is>
+  constexpr ReturnType operator()(SizeT<Is>... indices) const {
+    return Run(typename ContainsVariantNPos<Is...>::type{},
+               absl::index_sequence_for<QualifiedVariants...>(), indices...);
+  }
+
+  template <std::size_t... TupIs, std::size_t... Is>
+  constexpr ReturnType Run(std::false_type /*has_valueless*/,
+                           index_sequence<TupIs...>, SizeT<Is>...) const {
+    static_assert(
+        std::is_same<ReturnType,
+                     absl::result_of_t<Op(VariantAccessResult<
+                                          Is, QualifiedVariants>...)>>::value,
+        "All visitation overloads must have the same return type.");
+    return absl::base_internal::Invoke(
+        absl::forward<Op>(op),
+        VariantCoreAccess::Access<Is>(
+            absl::forward<QualifiedVariants>(std::get<TupIs>(variant_tup)))...);
+  }
+
+  template <std::size_t... TupIs, std::size_t... Is>
+  [[noreturn]] ReturnType Run(std::true_type /*has_valueless*/,
+                              index_sequence<TupIs...>, SizeT<Is>...) const {
+    absl::variant_internal::ThrowBadVariantAccess();
+  }
+
+  // TODO(calabrese) Avoid using a tuple, which causes lots of instantiations
+  // Attempts using lambda variadic captures fail on current GCC.
+  std::tuple<QualifiedVariants&&...> variant_tup;
+  Op&& op;
+};
+
+template <class... T>
+union Union;
+
+// We want to allow for variant<> to be trivial. For that, we need the default
+// constructor to be trivial, which means we can't define it ourselves.
+// Instead, we use a non-default constructor that takes NoopConstructorTag
+// that doesn't affect the triviality of the types.
+struct NoopConstructorTag {};
+
+template <std::size_t I>
+struct EmplaceTag {};
+
+template <>
+union Union<> {
+  constexpr explicit Union(NoopConstructorTag) noexcept {}
+};
+
+// Suppress bogus warning on MSVC: MSVC complains that Union<T...> has a defined
+// deleted destructor from the `std::is_destructible` check below.
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4624)
+#endif  // _MSC_VER
+
+template <class Head, class... Tail>
+union Union<Head, Tail...> {
+  using TailUnion = Union<Tail...>;
+
+  explicit constexpr Union(NoopConstructorTag /*tag*/) noexcept
+      : tail(NoopConstructorTag()) {}
+
+  template <class... P>
+  explicit constexpr Union(EmplaceTag<0>, P&&... args)
+      : head(absl::forward<P>(args)...) {}
+
+  template <std::size_t I, class... P>
+  explicit constexpr Union(EmplaceTag<I>, P&&... args)
+      : tail(EmplaceTag<I - 1>{}, absl::forward<P>(args)...) {}
+
+  Head head;
+  TailUnion tail;
+};
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif  // _MSC_VER
+
+// TODO(calabrese) Just contain a Union in this union (certain configs fail).
+template <class... T>
+union DestructibleUnionImpl;
+
+template <>
+union DestructibleUnionImpl<> {
+  constexpr explicit DestructibleUnionImpl(NoopConstructorTag) noexcept {}
+};
+
+template <class Head, class... Tail>
+union DestructibleUnionImpl<Head, Tail...> {
+  using TailUnion = DestructibleUnionImpl<Tail...>;
+
+  explicit constexpr DestructibleUnionImpl(NoopConstructorTag /*tag*/) noexcept
+      : tail(NoopConstructorTag()) {}
+
+  template <class... P>
+  explicit constexpr DestructibleUnionImpl(EmplaceTag<0>, P&&... args)
+      : head(absl::forward<P>(args)...) {}
+
+  template <std::size_t I, class... P>
+  explicit constexpr DestructibleUnionImpl(EmplaceTag<I>, P&&... args)
+      : tail(EmplaceTag<I - 1>{}, absl::forward<P>(args)...) {}
+
+  ~DestructibleUnionImpl() {}
+
+  Head head;
+  TailUnion tail;
+};
+
+// This union type is destructible even if one or more T are not trivially
+// destructible. In the case that all T are trivially destructible, then so is
+// this resultant type.
+template <class... T>
+using DestructibleUnion =
+    absl::conditional_t<std::is_destructible<Union<T...>>::value, Union<T...>,
+                        DestructibleUnionImpl<T...>>;
+
+// Deepest base, containing the actual union and the discriminator
+template <class H, class... T>
+class VariantStateBase {
+ protected:
+  using Variant = variant<H, T...>;
+
+  template <class LazyH = H,
+            class ConstructibleH = absl::enable_if_t<
+                std::is_default_constructible<LazyH>::value, LazyH>>
+  constexpr VariantStateBase() noexcept(
+      std::is_nothrow_default_constructible<ConstructibleH>::value)
+      : state_(EmplaceTag<0>()), index_(0) {}
+
+  template <std::size_t I, class... P>
+  explicit constexpr VariantStateBase(EmplaceTag<I> tag, P&&... args)
+      : state_(tag, absl::forward<P>(args)...), index_(I) {}
+
+  explicit constexpr VariantStateBase(NoopConstructorTag)
+      : state_(NoopConstructorTag()), index_(variant_npos) {}
+
+  void destroy() {}  // Does nothing (shadowed in child if non-trivial)
+
+  DestructibleUnion<H, T...> state_;
+  std::size_t index_;
+};
+
+using absl::internal::identity;
+
+// OverloadSet::Overload() is a unary function which is overloaded to
+// take any of the element types of the variant, by reference-to-const.
+// The return type of the overload on T is identity<T>, so that you
+// can statically determine which overload was called.
+//
+// Overload() is not defined, so it can only be called in unevaluated
+// contexts.
+template <typename... Ts>
+struct OverloadSet;
+
+template <typename T, typename... Ts>
+struct OverloadSet<T, Ts...> : OverloadSet<Ts...> {
+  using Base = OverloadSet<Ts...>;
+  static identity<T> Overload(const T&);
+  using Base::Overload;
+};
+
+template <>
+struct OverloadSet<> {
+  // For any case not handled above.
+  static void Overload(...);
+};
+
+template <class T>
+using LessThanResult = decltype(std::declval<T>() < std::declval<T>());
+
+template <class T>
+using GreaterThanResult = decltype(std::declval<T>() > std::declval<T>());
+
+template <class T>
+using LessThanOrEqualResult = decltype(std::declval<T>() <= std::declval<T>());
+
+template <class T>
+using GreaterThanOrEqualResult =
+    decltype(std::declval<T>() >= std::declval<T>());
+
+template <class T>
+using EqualResult = decltype(std::declval<T>() == std::declval<T>());
+
+template <class T>
+using NotEqualResult = decltype(std::declval<T>() != std::declval<T>());
+
+using type_traits_internal::is_detected_convertible;
+
+template <class... T>
+using RequireAllHaveEqualT = absl::enable_if_t<
+    absl::conjunction<is_detected_convertible<bool, EqualResult, T>...>::value,
+    bool>;
+
+template <class... T>
+using RequireAllHaveNotEqualT =
+    absl::enable_if_t<absl::conjunction<is_detected_convertible<
+                          bool, NotEqualResult, T>...>::value,
+                      bool>;
+
+template <class... T>
+using RequireAllHaveLessThanT =
+    absl::enable_if_t<absl::conjunction<is_detected_convertible<
+                          bool, LessThanResult, T>...>::value,
+                      bool>;
+
+template <class... T>
+using RequireAllHaveLessThanOrEqualT =
+    absl::enable_if_t<absl::conjunction<is_detected_convertible<
+                          bool, LessThanOrEqualResult, T>...>::value,
+                      bool>;
+
+template <class... T>
+using RequireAllHaveGreaterThanOrEqualT =
+    absl::enable_if_t<absl::conjunction<is_detected_convertible<
+                          bool, GreaterThanOrEqualResult, T>...>::value,
+                      bool>;
+
+template <class... T>
+using RequireAllHaveGreaterThanT =
+    absl::enable_if_t<absl::conjunction<is_detected_convertible<
+                          bool, GreaterThanResult, T>...>::value,
+                      bool>;
+
+// Helper template containing implementations details of variant that can't go
+// in the private section. For convenience, this takes the variant type as a
+// single template parameter.
+template <typename T>
+struct VariantHelper;
+
+template <typename... Ts>
+struct VariantHelper<variant<Ts...>> {
+  // Type metafunction which returns the element type selected if
+  // OverloadSet::Overload() is well-formed when called with argument type U.
+  template <typename U>
+  using BestMatch = decltype(
+      variant_internal::OverloadSet<Ts...>::Overload(std::declval<U>()));
+
+  // Type metafunction which returns true if OverloadSet::Overload() is
+  // well-formed when called with argument type U.
+  // CanAccept can't be just an alias because there is a MSVC bug on parameter
+  // pack expansion involving decltype.
+  template <typename U>
+  struct CanAccept :
+      std::integral_constant<bool, !std::is_void<BestMatch<U>>::value> {};
+
+  // Type metafunction which returns true if Other is an instantiation of
+  // variant, and variants's converting constructor from Other will be
+  // well-formed. We will use this to remove constructors that would be
+  // ill-formed from the overload set.
+  template <typename Other>
+  struct CanConvertFrom;
+
+  template <typename... Us>
+  struct CanConvertFrom<variant<Us...>>
+      : public absl::conjunction<CanAccept<Us>...> {};
+};
+
+// A type with nontrivial copy ctor and trivial move ctor.
+struct TrivialMoveOnly {
+  TrivialMoveOnly(TrivialMoveOnly&&) = default;
+};
+
+// Trait class to detect whether a type is trivially move constructible.
+// A union's defaulted copy/move constructor is deleted if any variant member's
+// copy/move constructor is nontrivial.
+template <typename T>
+struct IsTriviallyMoveConstructible:
+  std::is_move_constructible<Union<T, TrivialMoveOnly>> {};
+
+// To guarantee triviality of all special-member functions that can be trivial,
+// we use a chain of conditional bases for each one.
+// The order of inheritance of bases from child to base are logically:
+//
+// variant
+// VariantCopyAssignBase
+// VariantMoveAssignBase
+// VariantCopyBase
+// VariantMoveBase
+// VariantStateBaseDestructor
+// VariantStateBase
+//
+// Note that there is a separate branch at each base that is dependent on
+// whether or not that corresponding special-member-function can be trivial in
+// the resultant variant type.
+
+template <class... T>
+class VariantStateBaseDestructorNontrivial;
+
+template <class... T>
+class VariantMoveBaseNontrivial;
+
+template <class... T>
+class VariantCopyBaseNontrivial;
+
+template <class... T>
+class VariantMoveAssignBaseNontrivial;
+
+template <class... T>
+class VariantCopyAssignBaseNontrivial;
+
+// Base that is dependent on whether or not the destructor can be trivial.
+template <class... T>
+using VariantStateBaseDestructor =
+    absl::conditional_t<std::is_destructible<Union<T...>>::value,
+                        VariantStateBase<T...>,
+                        VariantStateBaseDestructorNontrivial<T...>>;
+
+// Base that is dependent on whether or not the move-constructor can be
+// implicitly generated by the compiler (trivial or deleted).
+// Previously we were using `std::is_move_constructible<Union<T...>>` to check
+// whether all Ts have trivial move constructor, but it ran into a GCC bug:
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84866
+// So we have to use a different approach (i.e. `HasTrivialMoveConstructor`) to
+// work around the bug.
+template <class... T>
+using VariantMoveBase = absl::conditional_t<
+    absl::disjunction<
+        absl::negation<absl::conjunction<std::is_move_constructible<T>...>>,
+        absl::conjunction<IsTriviallyMoveConstructible<T>...>>::value,
+    VariantStateBaseDestructor<T...>, VariantMoveBaseNontrivial<T...>>;
+
+// Base that is dependent on whether or not the copy-constructor can be trivial.
+template <class... T>
+using VariantCopyBase = absl::conditional_t<
+    absl::disjunction<
+        absl::negation<absl::conjunction<std::is_copy_constructible<T>...>>,
+        std::is_copy_constructible<Union<T...>>>::value,
+    VariantMoveBase<T...>, VariantCopyBaseNontrivial<T...>>;
+
+// Base that is dependent on whether or not the move-assign can be trivial.
+template <class... T>
+using VariantMoveAssignBase = absl::conditional_t<
+    absl::disjunction<
+        absl::conjunction<absl::is_move_assignable<Union<T...>>,
+                          std::is_move_constructible<Union<T...>>,
+                          std::is_destructible<Union<T...>>>,
+        absl::negation<absl::conjunction<std::is_move_constructible<T>...,
+                                         // Note: We're not qualifying this with
+                                         // absl:: because it doesn't compile
+                                         // under MSVC.
+                                         is_move_assignable<T>...>>>::value,
+    VariantCopyBase<T...>, VariantMoveAssignBaseNontrivial<T...>>;
+
+// Base that is dependent on whether or not the copy-assign can be trivial.
+template <class... T>
+using VariantCopyAssignBase = absl::conditional_t<
+    absl::disjunction<
+        absl::conjunction<absl::is_copy_assignable<Union<T...>>,
+                          std::is_copy_constructible<Union<T...>>,
+                          std::is_destructible<Union<T...>>>,
+        absl::negation<absl::conjunction<std::is_copy_constructible<T>...,
+                                         // Note: We're not qualifying this with
+                                         // absl:: because it doesn't compile
+                                         // under MSVC.
+                                         is_copy_assignable<T>...>>>::value,
+    VariantMoveAssignBase<T...>, VariantCopyAssignBaseNontrivial<T...>>;
+
+template <class... T>
+using VariantBase = VariantCopyAssignBase<T...>;
+
+template <class... T>
+class VariantStateBaseDestructorNontrivial : protected VariantStateBase<T...> {
+ private:
+  using Base = VariantStateBase<T...>;
+
+ protected:
+  using Base::Base;
+
+  VariantStateBaseDestructorNontrivial() = default;
+  VariantStateBaseDestructorNontrivial(VariantStateBaseDestructorNontrivial&&) =
+      default;
+  VariantStateBaseDestructorNontrivial(
+      const VariantStateBaseDestructorNontrivial&) = default;
+  VariantStateBaseDestructorNontrivial& operator=(
+      VariantStateBaseDestructorNontrivial&&) = default;
+  VariantStateBaseDestructorNontrivial& operator=(
+      const VariantStateBaseDestructorNontrivial&) = default;
+
+  struct Destroyer {
+    template <std::size_t I>
+    void operator()(SizeT<I> i) const {
+      using Alternative =
+          typename absl::variant_alternative<I, variant<T...>>::type;
+      variant_internal::AccessUnion(self->state_, i).~Alternative();
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*i*/) const {
+      // This space intentionally left blank
+    }
+
+    VariantStateBaseDestructorNontrivial* self;
+  };
+
+  void destroy() { VisitIndices<sizeof...(T)>::Run(Destroyer{this}, index_); }
+
+  ~VariantStateBaseDestructorNontrivial() { destroy(); }
+
+ protected:
+  using Base::index_;
+  using Base::state_;
+};
+
+template <class... T>
+class VariantMoveBaseNontrivial : protected VariantStateBaseDestructor<T...> {
+ private:
+  using Base = VariantStateBaseDestructor<T...>;
+
+ protected:
+  using Base::Base;
+
+  struct Construct {
+    template <std::size_t I>
+    void operator()(SizeT<I> i) const {
+      using Alternative =
+          typename absl::variant_alternative<I, variant<T...>>::type;
+      ::new (static_cast<void*>(&self->state_)) Alternative(
+          variant_internal::AccessUnion(absl::move(other->state_), i));
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*i*/) const {}
+
+    VariantMoveBaseNontrivial* self;
+    VariantMoveBaseNontrivial* other;
+  };
+
+  VariantMoveBaseNontrivial() = default;
+  VariantMoveBaseNontrivial(VariantMoveBaseNontrivial&& other) noexcept(
+      absl::conjunction<std::is_nothrow_move_constructible<T>...>::value)
+      : Base(NoopConstructorTag()) {
+    VisitIndices<sizeof...(T)>::Run(Construct{this, &other}, other.index_);
+    index_ = other.index_;
+  }
+
+  VariantMoveBaseNontrivial(VariantMoveBaseNontrivial const&) = default;
+
+  VariantMoveBaseNontrivial& operator=(VariantMoveBaseNontrivial&&) = default;
+  VariantMoveBaseNontrivial& operator=(VariantMoveBaseNontrivial const&) =
+      default;
+
+ protected:
+  using Base::index_;
+  using Base::state_;
+};
+
+template <class... T>
+class VariantCopyBaseNontrivial : protected VariantMoveBase<T...> {
+ private:
+  using Base = VariantMoveBase<T...>;
+
+ protected:
+  using Base::Base;
+
+  VariantCopyBaseNontrivial() = default;
+  VariantCopyBaseNontrivial(VariantCopyBaseNontrivial&&) = default;
+
+  struct Construct {
+    template <std::size_t I>
+    void operator()(SizeT<I> i) const {
+      using Alternative =
+          typename absl::variant_alternative<I, variant<T...>>::type;
+      ::new (static_cast<void*>(&self->state_))
+          Alternative(variant_internal::AccessUnion(other->state_, i));
+    }
+
+    void operator()(SizeT<absl::variant_npos> /*i*/) const {}
+
+    VariantCopyBaseNontrivial* self;
+    const VariantCopyBaseNontrivial* other;
+  };
+
+  VariantCopyBaseNontrivial(VariantCopyBaseNontrivial const& other)
+      : Base(NoopConstructorTag()) {
+    VisitIndices<sizeof...(T)>::Run(Construct{this, &other}, other.index_);
+    index_ = other.index_;
+  }
+
+  VariantCopyBaseNontrivial& operator=(VariantCopyBaseNontrivial&&) = default;
+  VariantCopyBaseNontrivial& operator=(VariantCopyBaseNontrivial const&) =
+      default;
+
+ protected:
+  using Base::index_;
+  using Base::state_;
+};
+
+template <class... T>
+class VariantMoveAssignBaseNontrivial : protected VariantCopyBase<T...> {
+  friend struct VariantCoreAccess;
+
+ private:
+  using Base = VariantCopyBase<T...>;
+
+ protected:
+  using Base::Base;
+
+  VariantMoveAssignBaseNontrivial() = default;
+  VariantMoveAssignBaseNontrivial(VariantMoveAssignBaseNontrivial&&) = default;
+  VariantMoveAssignBaseNontrivial(const VariantMoveAssignBaseNontrivial&) =
+      default;
+  VariantMoveAssignBaseNontrivial& operator=(
+      VariantMoveAssignBaseNontrivial const&) = default;
+
+    VariantMoveAssignBaseNontrivial&
+    operator=(VariantMoveAssignBaseNontrivial&& other) noexcept(
+        absl::conjunction<std::is_nothrow_move_constructible<T>...,
+                          std::is_nothrow_move_assignable<T>...>::value) {
+      VisitIndices<sizeof...(T)>::Run(
+          VariantCoreAccess::MakeMoveAssignVisitor(this, &other), other.index_);
+      return *this;
+    }
+
+ protected:
+  using Base::index_;
+  using Base::state_;
+};
+
+template <class... T>
+class VariantCopyAssignBaseNontrivial : protected VariantMoveAssignBase<T...> {
+  friend struct VariantCoreAccess;
+
+ private:
+  using Base = VariantMoveAssignBase<T...>;
+
+ protected:
+  using Base::Base;
+
+  VariantCopyAssignBaseNontrivial() = default;
+  VariantCopyAssignBaseNontrivial(VariantCopyAssignBaseNontrivial&&) = default;
+  VariantCopyAssignBaseNontrivial(const VariantCopyAssignBaseNontrivial&) =
+      default;
+  VariantCopyAssignBaseNontrivial& operator=(
+      VariantCopyAssignBaseNontrivial&&) = default;
+
+    VariantCopyAssignBaseNontrivial& operator=(
+        const VariantCopyAssignBaseNontrivial& other) {
+      VisitIndices<sizeof...(T)>::Run(
+          VariantCoreAccess::MakeCopyAssignVisitor(this, other), other.index_);
+      return *this;
+    }
+
+ protected:
+  using Base::index_;
+  using Base::state_;
+};
+
+////////////////////////////////////////
+// Visitors for Comparison Operations //
+////////////////////////////////////////
+
+template <class... Types>
+struct EqualsOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return true;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) == VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+template <class... Types>
+struct NotEqualsOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return false;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) != VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+template <class... Types>
+struct LessThanOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return false;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) < VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+template <class... Types>
+struct GreaterThanOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return false;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) > VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+template <class... Types>
+struct LessThanOrEqualsOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return true;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) <= VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+template <class... Types>
+struct GreaterThanOrEqualsOp {
+  const variant<Types...>* v;
+  const variant<Types...>* w;
+
+  constexpr bool operator()(SizeT<absl::variant_npos> /*v_i*/) const {
+    return true;
+  }
+
+  template <std::size_t I>
+  constexpr bool operator()(SizeT<I> /*v_i*/) const {
+    return VariantCoreAccess::Access<I>(*v) >= VariantCoreAccess::Access<I>(*w);
+  }
+};
+
+// Precondition: v.index() == w.index();
+template <class... Types>
+struct SwapSameIndex {
+  variant<Types...>* v;
+  variant<Types...>* w;
+  template <std::size_t I>
+  void operator()(SizeT<I>) const {
+    type_traits_internal::Swap(VariantCoreAccess::Access<I>(*v),
+                               VariantCoreAccess::Access<I>(*w));
+  }
+
+  void operator()(SizeT<variant_npos>) const {}
+};
+
+// TODO(calabrese) do this from a different namespace for proper adl usage
+template <class... Types>
+struct Swap {
+  variant<Types...>* v;
+  variant<Types...>* w;
+
+  void generic_swap() const {
+    variant<Types...> tmp(std::move(*w));
+    VariantCoreAccess::Destroy(*w);
+    VariantCoreAccess::InitFrom(*w, std::move(*v));
+    VariantCoreAccess::Destroy(*v);
+    VariantCoreAccess::InitFrom(*v, std::move(tmp));
+  }
+
+  void operator()(SizeT<absl::variant_npos> /*w_i*/) const {
+    if (!v->valueless_by_exception()) {
+      generic_swap();
+    }
+  }
+
+  template <std::size_t Wi>
+  void operator()(SizeT<Wi> /*w_i*/) {
+    if (v->index() == Wi) {
+      VisitIndices<sizeof...(Types)>::Run(SwapSameIndex<Types...>{v, w}, Wi);
+    } else {
+      generic_swap();
+    }
+  }
+};
+
+template <typename Variant, typename = void, typename... Ts>
+struct VariantHashBase {
+  VariantHashBase() = delete;
+  VariantHashBase(const VariantHashBase&) = delete;
+  VariantHashBase(VariantHashBase&&) = delete;
+  VariantHashBase& operator=(const VariantHashBase&) = delete;
+  VariantHashBase& operator=(VariantHashBase&&) = delete;
+};
+
+struct VariantHashVisitor {
+  template <typename T>
+  size_t operator()(const T& t) {
+    return std::hash<T>{}(t);
+  }
+};
+
+template <typename Variant, typename... Ts>
+struct VariantHashBase<Variant,
+                       absl::enable_if_t<absl::conjunction<
+                           type_traits_internal::IsHashable<Ts>...>::value>,
+                       Ts...> {
+  using argument_type = Variant;
+  using result_type = size_t;
+  size_t operator()(const Variant& var) const {
+    type_traits_internal::AssertHashEnabled<Ts...>();
+    if (var.valueless_by_exception()) {
+      return 239799884;
+    }
+    size_t result = VisitIndices<variant_size<Variant>::value>::Run(
+        PerformVisitation<VariantHashVisitor, const Variant&>{
+            std::forward_as_tuple(var), VariantHashVisitor{}},
+        var.index());
+    // Combine the index and the hash result in order to distinguish
+    // std::variant<int, int> holding the same value as different alternative.
+    return result ^ var.index();
+  }
+};
+
+}  // namespace variant_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // !defined(ABSL_USES_STD_VARIANT)
+#endif  // ABSL_TYPES_variant_internal_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/optional.h b/ChattingApp 000/Pods/abseil/absl/types/optional.h
new file mode 100644
index 0000000..2025e29
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/optional.h	
@@ -0,0 +1,776 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// optional.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `absl::optional` type for holding a value which
+// may or may not be present. This type is useful for providing value semantics
+// for operations that may either wish to return or hold "something-or-nothing".
+//
+// Example:
+//
+//   // A common way to signal operation failure is to provide an output
+//   // parameter and a bool return type:
+//   bool AcquireResource(const Input&, Resource * out);
+//
+//   // Providing an absl::optional return type provides a cleaner API:
+//   absl::optional<Resource> AcquireResource(const Input&);
+//
+// `absl::optional` is a C++11 compatible version of the C++17 `std::optional`
+// abstraction and is designed to be a drop-in replacement for code compliant
+// with C++17.
+#ifndef ABSL_TYPES_OPTIONAL_H_
+#define ABSL_TYPES_OPTIONAL_H_
+
+#include "absl/base/config.h"   // TODO(calabrese) IWYU removal?
+#include "absl/utility/utility.h"
+
+#ifdef ABSL_USES_STD_OPTIONAL
+
+#include <optional>  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::bad_optional_access;
+using std::optional;
+using std::make_optional;
+using std::nullopt_t;
+using std::nullopt;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_OPTIONAL
+
+#include <cassert>
+#include <functional>
+#include <initializer_list>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/attributes.h"
+#include "absl/base/internal/inline_variable.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/bad_optional_access.h"
+#include "absl/types/internal/optional.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// nullopt_t
+//
+// Class type for `absl::nullopt` used to indicate an `absl::optional<T>` type
+// that does not contain a value.
+struct nullopt_t {
+  // It must not be default-constructible to avoid ambiguity for opt = {}.
+  explicit constexpr nullopt_t(optional_internal::init_t) noexcept {}
+};
+
+// nullopt
+//
+// A tag constant of type `absl::nullopt_t` used to indicate an empty
+// `absl::optional` in certain functions, such as construction or assignment.
+ABSL_INTERNAL_INLINE_CONSTEXPR(nullopt_t, nullopt,
+                               nullopt_t(optional_internal::init_t()));
+
+// -----------------------------------------------------------------------------
+// absl::optional
+// -----------------------------------------------------------------------------
+//
+// A value of type `absl::optional<T>` holds either a value of `T` or an
+// "empty" value.  When it holds a value of `T`, it stores it as a direct
+// sub-object, so `sizeof(optional<T>)` is approximately
+// `sizeof(T) + sizeof(bool)`.
+//
+// This implementation is based on the specification in the latest draft of the
+// C++17 `std::optional` specification as of May 2017, section 20.6.
+//
+// Differences between `absl::optional<T>` and `std::optional<T>` include:
+//
+//    * `constexpr` is not used for non-const member functions.
+//      (dependency on some differences between C++11 and C++14.)
+//    * `absl::nullopt` and `absl::in_place` are not declared `constexpr`. We
+//      need the inline variable support in C++17 for external linkage.
+//    * Throws `absl::bad_optional_access` instead of
+//      `std::bad_optional_access`.
+//    * `make_optional()` cannot be declared `constexpr` due to the absence of
+//      guaranteed copy elision.
+//    * The move constructor's `noexcept` specification is stronger, i.e. if the
+//      default allocator is non-throwing (via setting
+//      `ABSL_ALLOCATOR_NOTHROW`), it evaluates to `noexcept(true)`, because
+//      we assume
+//       a) move constructors should only throw due to allocation failure and
+//       b) if T's move constructor allocates, it uses the same allocation
+//          function as the default allocator.
+//
+template <typename T>
+class optional : private optional_internal::optional_data<T>,
+                 private optional_internal::optional_ctor_base<
+                     optional_internal::ctor_copy_traits<T>::traits>,
+                 private optional_internal::optional_assign_base<
+                     optional_internal::assign_copy_traits<T>::traits> {
+  using data_base = optional_internal::optional_data<T>;
+
+ public:
+  typedef T value_type;
+
+  // Constructors
+
+  // Constructs an `optional` holding an empty value, NOT a default constructed
+  // `T`.
+  constexpr optional() noexcept {}
+
+  // Constructs an `optional` initialized with `nullopt` to hold an empty value.
+  constexpr optional(nullopt_t) noexcept {}  // NOLINT(runtime/explicit)
+
+  // Copy constructor, standard semantics
+  optional(const optional& src) = default;
+
+  // Move constructor, standard semantics
+  optional(optional&& src) = default;
+
+  // Constructs a non-empty `optional` direct-initialized value of type `T` from
+  // the arguments `std::forward<Args>(args)...`  within the `optional`.
+  // (The `in_place_t` is a tag used to indicate that the contained object
+  // should be constructed in-place.)
+  template <typename InPlaceT, typename... Args,
+            absl::enable_if_t<absl::conjunction<
+                std::is_same<InPlaceT, in_place_t>,
+                std::is_constructible<T, Args&&...> >::value>* = nullptr>
+  constexpr explicit optional(InPlaceT, Args&&... args)
+      : data_base(in_place_t(), absl::forward<Args>(args)...) {}
+
+  // Constructs a non-empty `optional` direct-initialized value of type `T` from
+  // the arguments of an initializer_list and `std::forward<Args>(args)...`.
+  // (The `in_place_t` is a tag used to indicate that the contained object
+  // should be constructed in-place.)
+  template <typename U, typename... Args,
+            typename = typename std::enable_if<std::is_constructible<
+                T, std::initializer_list<U>&, Args&&...>::value>::type>
+  constexpr explicit optional(in_place_t, std::initializer_list<U> il,
+                              Args&&... args)
+      : data_base(in_place_t(), il, absl::forward<Args>(args)...) {
+  }
+
+  // Value constructor (implicit)
+  template <
+      typename U = T,
+      typename std::enable_if<
+          absl::conjunction<absl::negation<std::is_same<
+                                in_place_t, typename std::decay<U>::type> >,
+                            absl::negation<std::is_same<
+                                optional<T>, typename std::decay<U>::type> >,
+                            std::is_convertible<U&&, T>,
+                            std::is_constructible<T, U&&> >::value,
+          bool>::type = false>
+  constexpr optional(U&& v) : data_base(in_place_t(), absl::forward<U>(v)) {}
+
+  // Value constructor (explicit)
+  template <
+      typename U = T,
+      typename std::enable_if<
+          absl::conjunction<absl::negation<std::is_same<
+                                in_place_t, typename std::decay<U>::type>>,
+                            absl::negation<std::is_same<
+                                optional<T>, typename std::decay<U>::type>>,
+                            absl::negation<std::is_convertible<U&&, T>>,
+                            std::is_constructible<T, U&&>>::value,
+          bool>::type = false>
+  explicit constexpr optional(U&& v)
+      : data_base(in_place_t(), absl::forward<U>(v)) {}
+
+  // Converting copy constructor (implicit)
+  template <typename U,
+            typename std::enable_if<
+                absl::conjunction<
+                    absl::negation<std::is_same<T, U> >,
+                    std::is_constructible<T, const U&>,
+                    absl::negation<
+                        optional_internal::
+                            is_constructible_convertible_from_optional<T, U> >,
+                    std::is_convertible<const U&, T> >::value,
+                bool>::type = false>
+  optional(const optional<U>& rhs) {
+    if (rhs) {
+      this->construct(*rhs);
+    }
+  }
+
+  // Converting copy constructor (explicit)
+  template <typename U,
+            typename std::enable_if<
+                absl::conjunction<
+                    absl::negation<std::is_same<T, U>>,
+                    std::is_constructible<T, const U&>,
+                    absl::negation<
+                        optional_internal::
+                            is_constructible_convertible_from_optional<T, U>>,
+                    absl::negation<std::is_convertible<const U&, T>>>::value,
+                bool>::type = false>
+  explicit optional(const optional<U>& rhs) {
+    if (rhs) {
+      this->construct(*rhs);
+    }
+  }
+
+  // Converting move constructor (implicit)
+  template <typename U,
+            typename std::enable_if<
+                absl::conjunction<
+                    absl::negation<std::is_same<T, U> >,
+                    std::is_constructible<T, U&&>,
+                    absl::negation<
+                        optional_internal::
+                            is_constructible_convertible_from_optional<T, U> >,
+                    std::is_convertible<U&&, T> >::value,
+                bool>::type = false>
+  optional(optional<U>&& rhs) {
+    if (rhs) {
+      this->construct(std::move(*rhs));
+    }
+  }
+
+  // Converting move constructor (explicit)
+  template <
+      typename U,
+      typename std::enable_if<
+          absl::conjunction<
+              absl::negation<std::is_same<T, U>>, std::is_constructible<T, U&&>,
+              absl::negation<
+                  optional_internal::is_constructible_convertible_from_optional<
+                      T, U>>,
+              absl::negation<std::is_convertible<U&&, T>>>::value,
+          bool>::type = false>
+  explicit optional(optional<U>&& rhs) {
+    if (rhs) {
+      this->construct(std::move(*rhs));
+    }
+  }
+
+  // Destructor. Trivial if `T` is trivially destructible.
+  ~optional() = default;
+
+  // Assignment Operators
+
+  // Assignment from `nullopt`
+  //
+  // Example:
+  //
+  //   struct S { int value; };
+  //   optional<S> opt = absl::nullopt;  // Could also use opt = { };
+  optional& operator=(nullopt_t) noexcept {
+    this->destruct();
+    return *this;
+  }
+
+  // Copy assignment operator, standard semantics
+  optional& operator=(const optional& src) = default;
+
+  // Move assignment operator, standard semantics
+  optional& operator=(optional&& src) = default;
+
+  // Value assignment operators
+  template <
+      typename U = T,
+      typename = typename std::enable_if<absl::conjunction<
+          absl::negation<
+              std::is_same<optional<T>, typename std::decay<U>::type>>,
+          absl::negation<
+              absl::conjunction<std::is_scalar<T>,
+                                std::is_same<T, typename std::decay<U>::type>>>,
+          std::is_constructible<T, U>, std::is_assignable<T&, U>>::value>::type>
+  optional& operator=(U&& v) {
+    this->assign(std::forward<U>(v));
+    return *this;
+  }
+
+  template <
+      typename U,
+      typename = typename std::enable_if<absl::conjunction<
+          absl::negation<std::is_same<T, U>>,
+          std::is_constructible<T, const U&>, std::is_assignable<T&, const U&>,
+          absl::negation<
+              optional_internal::
+                  is_constructible_convertible_assignable_from_optional<
+                      T, U>>>::value>::type>
+  optional& operator=(const optional<U>& rhs) {
+    if (rhs) {
+      this->assign(*rhs);
+    } else {
+      this->destruct();
+    }
+    return *this;
+  }
+
+  template <typename U,
+            typename = typename std::enable_if<absl::conjunction<
+                absl::negation<std::is_same<T, U>>, std::is_constructible<T, U>,
+                std::is_assignable<T&, U>,
+                absl::negation<
+                    optional_internal::
+                        is_constructible_convertible_assignable_from_optional<
+                            T, U>>>::value>::type>
+  optional& operator=(optional<U>&& rhs) {
+    if (rhs) {
+      this->assign(std::move(*rhs));
+    } else {
+      this->destruct();
+    }
+    return *this;
+  }
+
+  // Modifiers
+
+  // optional::reset()
+  //
+  // Destroys the inner `T` value of an `absl::optional` if one is present.
+  ABSL_ATTRIBUTE_REINITIALIZES void reset() noexcept { this->destruct(); }
+
+  // optional::emplace()
+  //
+  // (Re)constructs the underlying `T` in-place with the given forwarded
+  // arguments.
+  //
+  // Example:
+  //
+  //   optional<Foo> opt;
+  //   opt.emplace(arg1,arg2,arg3);  // Constructs Foo(arg1,arg2,arg3)
+  //
+  // If the optional is non-empty, and the `args` refer to subobjects of the
+  // current object, then behaviour is undefined, because the current object
+  // will be destructed before the new object is constructed with `args`.
+  template <typename... Args,
+            typename = typename std::enable_if<
+                std::is_constructible<T, Args&&...>::value>::type>
+  T& emplace(Args&&... args) {
+    this->destruct();
+    this->construct(std::forward<Args>(args)...);
+    return reference();
+  }
+
+  // Emplace reconstruction overload for an initializer list and the given
+  // forwarded arguments.
+  //
+  // Example:
+  //
+  //   struct Foo {
+  //     Foo(std::initializer_list<int>);
+  //   };
+  //
+  //   optional<Foo> opt;
+  //   opt.emplace({1,2,3});  // Constructs Foo({1,2,3})
+  template <typename U, typename... Args,
+            typename = typename std::enable_if<std::is_constructible<
+                T, std::initializer_list<U>&, Args&&...>::value>::type>
+  T& emplace(std::initializer_list<U> il, Args&&... args) {
+    this->destruct();
+    this->construct(il, std::forward<Args>(args)...);
+    return reference();
+  }
+
+  // Swaps
+
+  // Swap, standard semantics
+  void swap(optional& rhs) noexcept(
+      std::is_nothrow_move_constructible<T>::value&&
+          type_traits_internal::IsNothrowSwappable<T>::value) {
+    if (*this) {
+      if (rhs) {
+        type_traits_internal::Swap(**this, *rhs);
+      } else {
+        rhs.construct(std::move(**this));
+        this->destruct();
+      }
+    } else {
+      if (rhs) {
+        this->construct(std::move(*rhs));
+        rhs.destruct();
+      } else {
+        // No effect (swap(disengaged, disengaged)).
+      }
+    }
+  }
+
+  // Observers
+
+  // optional::operator->()
+  //
+  // Accesses the underlying `T` value's member `m` of an `optional`. If the
+  // `optional` is empty, behavior is undefined.
+  //
+  // If you need myOpt->foo in constexpr, use (*myOpt).foo instead.
+  const T* operator->() const {
+    assert(this->engaged_);
+    return std::addressof(this->data_);
+  }
+  T* operator->() {
+    assert(this->engaged_);
+    return std::addressof(this->data_);
+  }
+
+  // optional::operator*()
+  //
+  // Accesses the underlying `T` value of an `optional`. If the `optional` is
+  // empty, behavior is undefined.
+  constexpr const T& operator*() const& {
+    return ABSL_ASSERT(this->engaged_), reference();
+  }
+  T& operator*() & {
+    assert(this->engaged_);
+    return reference();
+  }
+  constexpr const T&& operator*() const && {
+    return absl::move(reference());
+  }
+  T&& operator*() && {
+    assert(this->engaged_);
+    return std::move(reference());
+  }
+
+  // optional::operator bool()
+  //
+  // Returns false if and only if the `optional` is empty.
+  //
+  //   if (opt) {
+  //     // do something with opt.value();
+  //   } else {
+  //     // opt is empty.
+  //   }
+  //
+  constexpr explicit operator bool() const noexcept { return this->engaged_; }
+
+  // optional::has_value()
+  //
+  // Determines whether the `optional` contains a value. Returns `false` if and
+  // only if `*this` is empty.
+  constexpr bool has_value() const noexcept { return this->engaged_; }
+
+// Suppress bogus warning on MSVC: MSVC complains call to reference() after
+// throw_bad_optional_access() is unreachable.
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4702)
+#endif  // _MSC_VER
+  // optional::value()
+  //
+  // Returns a reference to an `optional`s underlying value. The constness
+  // and lvalue/rvalue-ness of the `optional` is preserved to the view of
+  // the `T` sub-object. Throws `absl::bad_optional_access` when the `optional`
+  // is empty.
+  constexpr const T& value() const & {
+    return static_cast<bool>(*this)
+               ? reference()
+               : (optional_internal::throw_bad_optional_access(), reference());
+  }
+  T& value() & {
+    return static_cast<bool>(*this)
+               ? reference()
+               : (optional_internal::throw_bad_optional_access(), reference());
+  }
+  T&& value() && {  // NOLINT(build/c++11)
+    return std::move(
+        static_cast<bool>(*this)
+            ? reference()
+            : (optional_internal::throw_bad_optional_access(), reference()));
+  }
+  constexpr const T&& value() const && {  // NOLINT(build/c++11)
+    return absl::move(
+        static_cast<bool>(*this)
+            ? reference()
+            : (optional_internal::throw_bad_optional_access(), reference()));
+  }
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif  // _MSC_VER
+
+  // optional::value_or()
+  //
+  // Returns either the value of `T` or a passed default `v` if the `optional`
+  // is empty.
+  template <typename U>
+  constexpr T value_or(U&& v) const& {
+    static_assert(std::is_copy_constructible<value_type>::value,
+                  "optional<T>::value_or: T must be copy constructible");
+    static_assert(std::is_convertible<U&&, value_type>::value,
+                  "optional<T>::value_or: U must be convertible to T");
+    return static_cast<bool>(*this)
+               ? **this
+               : static_cast<T>(absl::forward<U>(v));
+  }
+  template <typename U>
+  T value_or(U&& v) && {  // NOLINT(build/c++11)
+    static_assert(std::is_move_constructible<value_type>::value,
+                  "optional<T>::value_or: T must be move constructible");
+    static_assert(std::is_convertible<U&&, value_type>::value,
+                  "optional<T>::value_or: U must be convertible to T");
+    return static_cast<bool>(*this) ? std::move(**this)
+                                    : static_cast<T>(std::forward<U>(v));
+  }
+
+ private:
+  // Private accessors for internal storage viewed as reference to T.
+  constexpr const T& reference() const { return this->data_; }
+  T& reference() { return this->data_; }
+
+  // T constraint checks.  You can't have an optional of nullopt_t, in_place_t
+  // or a reference.
+  static_assert(
+      !std::is_same<nullopt_t, typename std::remove_cv<T>::type>::value,
+      "optional<nullopt_t> is not allowed.");
+  static_assert(
+      !std::is_same<in_place_t, typename std::remove_cv<T>::type>::value,
+      "optional<in_place_t> is not allowed.");
+  static_assert(!std::is_reference<T>::value,
+                "optional<reference> is not allowed.");
+};
+
+// Non-member functions
+
+// swap()
+//
+// Performs a swap between two `absl::optional` objects, using standard
+// semantics.
+template <typename T, typename std::enable_if<
+                          std::is_move_constructible<T>::value &&
+                              type_traits_internal::IsSwappable<T>::value,
+                          bool>::type = false>
+void swap(optional<T>& a, optional<T>& b) noexcept(noexcept(a.swap(b))) {
+  a.swap(b);
+}
+
+// make_optional()
+//
+// Creates a non-empty `optional<T>` where the type of `T` is deduced. An
+// `absl::optional` can also be explicitly instantiated with
+// `make_optional<T>(v)`.
+//
+// Note: `make_optional()` constructions may be declared `constexpr` for
+// trivially copyable types `T`. Non-trivial types require copy elision
+// support in C++17 for `make_optional` to support `constexpr` on such
+// non-trivial types.
+//
+// Example:
+//
+//   constexpr absl::optional<int> opt = absl::make_optional(1);
+//   static_assert(opt.value() == 1, "");
+template <typename T>
+constexpr optional<typename std::decay<T>::type> make_optional(T&& v) {
+  return optional<typename std::decay<T>::type>(absl::forward<T>(v));
+}
+
+template <typename T, typename... Args>
+constexpr optional<T> make_optional(Args&&... args) {
+  return optional<T>(in_place_t(), absl::forward<Args>(args)...);
+}
+
+template <typename T, typename U, typename... Args>
+constexpr optional<T> make_optional(std::initializer_list<U> il,
+                                    Args&&... args) {
+  return optional<T>(in_place_t(), il,
+                     absl::forward<Args>(args)...);
+}
+
+// Relational operators [optional.relops]
+
+// Empty optionals are considered equal to each other and less than non-empty
+// optionals. Supports relations between optional<T> and optional<U>, between
+// optional<T> and U, and between optional<T> and nullopt.
+//
+// Note: We're careful to support T having non-bool relationals.
+
+// Requires: The expression, e.g. "*x == *y" shall be well-formed and its result
+// shall be convertible to bool.
+// The C++17 (N4606) "Returns:" statements are translated into
+// code in an obvious way here, and the original text retained as function docs.
+// Returns: If bool(x) != bool(y), false; otherwise if bool(x) == false, true;
+// otherwise *x == *y.
+template <typename T, typename U>
+constexpr auto operator==(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x == *y)) {
+  return static_cast<bool>(x) != static_cast<bool>(y)
+             ? false
+             : static_cast<bool>(x) == false ? true
+                                             : static_cast<bool>(*x == *y);
+}
+
+// Returns: If bool(x) != bool(y), true; otherwise, if bool(x) == false, false;
+// otherwise *x != *y.
+template <typename T, typename U>
+constexpr auto operator!=(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x != *y)) {
+  return static_cast<bool>(x) != static_cast<bool>(y)
+             ? true
+             : static_cast<bool>(x) == false ? false
+                                             : static_cast<bool>(*x != *y);
+}
+// Returns: If !y, false; otherwise, if !x, true; otherwise *x < *y.
+template <typename T, typename U>
+constexpr auto operator<(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x < *y)) {
+  return !y ? false : !x ? true : static_cast<bool>(*x < *y);
+}
+// Returns: If !x, false; otherwise, if !y, true; otherwise *x > *y.
+template <typename T, typename U>
+constexpr auto operator>(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x > *y)) {
+  return !x ? false : !y ? true : static_cast<bool>(*x > *y);
+}
+// Returns: If !x, true; otherwise, if !y, false; otherwise *x <= *y.
+template <typename T, typename U>
+constexpr auto operator<=(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x <= *y)) {
+  return !x ? true : !y ? false : static_cast<bool>(*x <= *y);
+}
+// Returns: If !y, true; otherwise, if !x, false; otherwise *x >= *y.
+template <typename T, typename U>
+constexpr auto operator>=(const optional<T>& x, const optional<U>& y)
+    -> decltype(optional_internal::convertible_to_bool(*x >= *y)) {
+  return !y ? true : !x ? false : static_cast<bool>(*x >= *y);
+}
+
+// Comparison with nullopt [optional.nullops]
+// The C++17 (N4606) "Returns:" statements are used directly here.
+template <typename T>
+constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept {
+  return !x;
+}
+template <typename T>
+constexpr bool operator==(nullopt_t, const optional<T>& x) noexcept {
+  return !x;
+}
+template <typename T>
+constexpr bool operator!=(const optional<T>& x, nullopt_t) noexcept {
+  return static_cast<bool>(x);
+}
+template <typename T>
+constexpr bool operator!=(nullopt_t, const optional<T>& x) noexcept {
+  return static_cast<bool>(x);
+}
+template <typename T>
+constexpr bool operator<(const optional<T>&, nullopt_t) noexcept {
+  return false;
+}
+template <typename T>
+constexpr bool operator<(nullopt_t, const optional<T>& x) noexcept {
+  return static_cast<bool>(x);
+}
+template <typename T>
+constexpr bool operator<=(const optional<T>& x, nullopt_t) noexcept {
+  return !x;
+}
+template <typename T>
+constexpr bool operator<=(nullopt_t, const optional<T>&) noexcept {
+  return true;
+}
+template <typename T>
+constexpr bool operator>(const optional<T>& x, nullopt_t) noexcept {
+  return static_cast<bool>(x);
+}
+template <typename T>
+constexpr bool operator>(nullopt_t, const optional<T>&) noexcept {
+  return false;
+}
+template <typename T>
+constexpr bool operator>=(const optional<T>&, nullopt_t) noexcept {
+  return true;
+}
+template <typename T>
+constexpr bool operator>=(nullopt_t, const optional<T>& x) noexcept {
+  return !x;
+}
+
+// Comparison with T [optional.comp_with_t]
+
+// Requires: The expression, e.g. "*x == v" shall be well-formed and its result
+// shall be convertible to bool.
+// The C++17 (N4606) "Equivalent to:" statements are used directly here.
+template <typename T, typename U>
+constexpr auto operator==(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x == v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x == v) : false;
+}
+template <typename T, typename U>
+constexpr auto operator==(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v == *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v == *x) : false;
+}
+template <typename T, typename U>
+constexpr auto operator!=(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x != v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x != v) : true;
+}
+template <typename T, typename U>
+constexpr auto operator!=(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v != *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v != *x) : true;
+}
+template <typename T, typename U>
+constexpr auto operator<(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x < v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x < v) : true;
+}
+template <typename T, typename U>
+constexpr auto operator<(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v < *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v < *x) : false;
+}
+template <typename T, typename U>
+constexpr auto operator<=(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x <= v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x <= v) : true;
+}
+template <typename T, typename U>
+constexpr auto operator<=(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v <= *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v <= *x) : false;
+}
+template <typename T, typename U>
+constexpr auto operator>(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x > v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x > v) : false;
+}
+template <typename T, typename U>
+constexpr auto operator>(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v > *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v > *x) : true;
+}
+template <typename T, typename U>
+constexpr auto operator>=(const optional<T>& x, const U& v)
+    -> decltype(optional_internal::convertible_to_bool(*x >= v)) {
+  return static_cast<bool>(x) ? static_cast<bool>(*x >= v) : false;
+}
+template <typename T, typename U>
+constexpr auto operator>=(const U& v, const optional<T>& x)
+    -> decltype(optional_internal::convertible_to_bool(v >= *x)) {
+  return static_cast<bool>(x) ? static_cast<bool>(v >= *x) : true;
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+namespace std {
+
+// std::hash specialization for absl::optional.
+template <typename T>
+struct hash<absl::optional<T> >
+    : absl::optional_internal::optional_hash_base<T> {};
+
+}  // namespace std
+
+#undef ABSL_MSVC_CONSTEXPR_BUG_IN_UNION_LIKE_CLASS
+
+#endif  // ABSL_USES_STD_OPTIONAL
+
+#endif  // ABSL_TYPES_OPTIONAL_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/span.h b/ChattingApp 000/Pods/abseil/absl/types/span.h
new file mode 100644
index 0000000..3283145
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/span.h	
@@ -0,0 +1,713 @@
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// span.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a `Span<T>` type for holding a view of an existing
+// array of data. The `Span` object, much like the `absl::string_view` object,
+// does not own such data itself. A span provides a lightweight way to pass
+// around view of such data.
+//
+// Additionally, this header file defines `MakeSpan()` and `MakeConstSpan()`
+// factory functions, for clearly creating spans of type `Span<T>` or read-only
+// `Span<const T>` when such types may be difficult to identify due to issues
+// with implicit conversion.
+//
+// The C++ standards committee currently has a proposal for a `std::span` type,
+// (http://wg21.link/p0122), which is not yet part of the standard (though may
+// become part of C++20). As of August 2017, the differences between
+// `absl::Span` and this proposal are:
+//    * `absl::Span` uses `size_t` for `size_type`
+//    * `absl::Span` has no `operator()`
+//    * `absl::Span` has no constructors for `std::unique_ptr` or
+//      `std::shared_ptr`
+//    * `absl::Span` has the factory functions `MakeSpan()` and
+//      `MakeConstSpan()`
+//    * `absl::Span` has `front()` and `back()` methods
+//    * bounds-checked access to `absl::Span` is accomplished with `at()`
+//    * `absl::Span` has compiler-provided move and copy constructors and
+//      assignment. This is due to them being specified as `constexpr`, but that
+//      implies const in C++11.
+//    * `absl::Span` has no `element_type` or `index_type` typedefs
+//    * A read-only `absl::Span<const T>` can be implicitly constructed from an
+//      initializer list.
+//    * `absl::Span` has no `bytes()`, `size_bytes()`, `as_bytes()`, or
+//      `as_mutable_bytes()` methods
+//    * `absl::Span` has no static extent template parameter, nor constructors
+//      which exist only because of the static extent parameter.
+//    * `absl::Span` has an explicit mutable-reference constructor
+//
+// For more information, see the class comments below.
+#ifndef ABSL_TYPES_SPAN_H_
+#define ABSL_TYPES_SPAN_H_
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <initializer_list>
+#include <iterator>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/throw_delegate.h"
+#include "absl/base/macros.h"
+#include "absl/base/optimization.h"
+#include "absl/base/port.h"    // TODO(strel): remove this include
+#include "absl/meta/type_traits.h"
+#include "absl/types/internal/span.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+//------------------------------------------------------------------------------
+// Span
+//------------------------------------------------------------------------------
+//
+// A `Span` is an "array view" type for holding a view of a contiguous data
+// array; the `Span` object does not and cannot own such data itself. A span
+// provides an easy way to provide overloads for anything operating on
+// contiguous sequences without needing to manage pointers and array lengths
+// manually.
+
+// A span is conceptually a pointer (ptr) and a length (size) into an already
+// existing array of contiguous memory; the array it represents references the
+// elements "ptr[0] .. ptr[size-1]". Passing a properly-constructed `Span`
+// instead of raw pointers avoids many issues related to index out of bounds
+// errors.
+//
+// Spans may also be constructed from containers holding contiguous sequences.
+// Such containers must supply `data()` and `size() const` methods (e.g
+// `std::vector<T>`, `absl::InlinedVector<T, N>`). All implicit conversions to
+// `absl::Span` from such containers will create spans of type `const T`;
+// spans which can mutate their values (of type `T`) must use explicit
+// constructors.
+//
+// A `Span<T>` is somewhat analogous to an `absl::string_view`, but for an array
+// of elements of type `T`. A user of `Span` must ensure that the data being
+// pointed to outlives the `Span` itself.
+//
+// You can construct a `Span<T>` in several ways:
+//
+//   * Explicitly from a reference to a container type
+//   * Explicitly from a pointer and size
+//   * Implicitly from a container type (but only for spans of type `const T`)
+//   * Using the `MakeSpan()` or `MakeConstSpan()` factory functions.
+//
+// Examples:
+//
+//   // Construct a Span explicitly from a container:
+//   std::vector<int> v = {1, 2, 3, 4, 5};
+//   auto span = absl::Span<const int>(v);
+//
+//   // Construct a Span explicitly from a C-style array:
+//   int a[5] =  {1, 2, 3, 4, 5};
+//   auto span = absl::Span<const int>(a);
+//
+//   // Construct a Span implicitly from a container
+//   void MyRoutine(absl::Span<const int> a) {
+//     ...
+//   }
+//   std::vector v = {1,2,3,4,5};
+//   MyRoutine(v)                     // convert to Span<const T>
+//
+// Note that `Span` objects, in addition to requiring that the memory they
+// point to remains alive, must also ensure that such memory does not get
+// reallocated. Therefore, to avoid undefined behavior, containers with
+// associated span views should not invoke operations that may reallocate memory
+// (such as resizing) or invalidate iterators into the container.
+//
+// One common use for a `Span` is when passing arguments to a routine that can
+// accept a variety of array types (e.g. a `std::vector`, `absl::InlinedVector`,
+// a C-style array, etc.). Instead of creating overloads for each case, you
+// can simply specify a `Span` as the argument to such a routine.
+//
+// Example:
+//
+//   void MyRoutine(absl::Span<const int> a) {
+//     ...
+//   }
+//
+//   std::vector v = {1,2,3,4,5};
+//   MyRoutine(v);
+//
+//   absl::InlinedVector<int, 4> my_inline_vector;
+//   MyRoutine(my_inline_vector);
+//
+//   // Explicit constructor from pointer,size
+//   int* my_array = new int[10];
+//   MyRoutine(absl::Span<const int>(my_array, 10));
+template <typename T>
+class Span {
+ private:
+  // Used to determine whether a Span can be constructed from a container of
+  // type C.
+  template <typename C>
+  using EnableIfConvertibleFrom =
+      typename std::enable_if<span_internal::HasData<T, C>::value &&
+                              span_internal::HasSize<C>::value>::type;
+
+  // Used to SFINAE-enable a function when the slice elements are const.
+  template <typename U>
+  using EnableIfConstView =
+      typename std::enable_if<std::is_const<T>::value, U>::type;
+
+  // Used to SFINAE-enable a function when the slice elements are mutable.
+  template <typename U>
+  using EnableIfMutableView =
+      typename std::enable_if<!std::is_const<T>::value, U>::type;
+
+ public:
+  using value_type = absl::remove_cv_t<T>;
+  using pointer = T*;
+  using const_pointer = const T*;
+  using reference = T&;
+  using const_reference = const T&;
+  using iterator = pointer;
+  using const_iterator = const_pointer;
+  using reverse_iterator = std::reverse_iterator<iterator>;
+  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+  using size_type = size_t;
+  using difference_type = ptrdiff_t;
+
+  static const size_type npos = ~(size_type(0));
+
+  constexpr Span() noexcept : Span(nullptr, 0) {}
+  constexpr Span(pointer array, size_type length) noexcept
+      : ptr_(array), len_(length) {}
+
+  // Implicit conversion constructors
+  template <size_t N>
+  constexpr Span(T (&a)[N]) noexcept  // NOLINT(runtime/explicit)
+      : Span(a, N) {}
+
+  // Explicit reference constructor for a mutable `Span<T>` type. Can be
+  // replaced with MakeSpan() to infer the type parameter.
+  template <typename V, typename = EnableIfConvertibleFrom<V>,
+            typename = EnableIfMutableView<V>>
+  explicit Span(V& v) noexcept  // NOLINT(runtime/references)
+      : Span(span_internal::GetData(v), v.size()) {}
+
+  // Implicit reference constructor for a read-only `Span<const T>` type
+  template <typename V, typename = EnableIfConvertibleFrom<V>,
+            typename = EnableIfConstView<V>>
+  constexpr Span(const V& v) noexcept  // NOLINT(runtime/explicit)
+      : Span(span_internal::GetData(v), v.size()) {}
+
+  // Implicit constructor from an initializer list, making it possible to pass a
+  // brace-enclosed initializer list to a function expecting a `Span`. Such
+  // spans constructed from an initializer list must be of type `Span<const T>`.
+  //
+  //   void Process(absl::Span<const int> x);
+  //   Process({1, 2, 3});
+  //
+  // Note that as always the array referenced by the span must outlive the span.
+  // Since an initializer list constructor acts as if it is fed a temporary
+  // array (cf. C++ standard [dcl.init.list]/5), it's safe to use this
+  // constructor only when the `std::initializer_list` itself outlives the span.
+  // In order to meet this requirement it's sufficient to ensure that neither
+  // the span nor a copy of it is used outside of the expression in which it's
+  // created:
+  //
+  //   // Assume that this function uses the array directly, not retaining any
+  //   // copy of the span or pointer to any of its elements.
+  //   void Process(absl::Span<const int> ints);
+  //
+  //   // Okay: the std::initializer_list<int> will reference a temporary array
+  //   // that isn't destroyed until after the call to Process returns.
+  //   Process({ 17, 19 });
+  //
+  //   // Not okay: the storage used by the std::initializer_list<int> is not
+  //   // allowed to be referenced after the first line.
+  //   absl::Span<const int> ints = { 17, 19 };
+  //   Process(ints);
+  //
+  //   // Not okay for the same reason as above: even when the elements of the
+  //   // initializer list expression are not temporaries the underlying array
+  //   // is, so the initializer list must still outlive the span.
+  //   const int foo = 17;
+  //   absl::Span<const int> ints = { foo };
+  //   Process(ints);
+  //
+  template <typename LazyT = T,
+            typename = EnableIfConstView<LazyT>>
+  Span(
+      std::initializer_list<value_type> v) noexcept  // NOLINT(runtime/explicit)
+      : Span(v.begin(), v.size()) {}
+
+  // Accessors
+
+  // Span::data()
+  //
+  // Returns a pointer to the span's underlying array of data (which is held
+  // outside the span).
+  constexpr pointer data() const noexcept { return ptr_; }
+
+  // Span::size()
+  //
+  // Returns the size of this span.
+  constexpr size_type size() const noexcept { return len_; }
+
+  // Span::length()
+  //
+  // Returns the length (size) of this span.
+  constexpr size_type length() const noexcept { return size(); }
+
+  // Span::empty()
+  //
+  // Returns a boolean indicating whether or not this span is considered empty.
+  constexpr bool empty() const noexcept { return size() == 0; }
+
+  // Span::operator[]
+  //
+  // Returns a reference to the i'th element of this span.
+  constexpr reference operator[](size_type i) const noexcept {
+    // MSVC 2015 accepts this as constexpr, but not ptr_[i]
+    return *(data() + i);
+  }
+
+  // Span::at()
+  //
+  // Returns a reference to the i'th element of this span.
+  constexpr reference at(size_type i) const {
+    return ABSL_PREDICT_TRUE(i < size())  //
+               ? *(data() + i)
+               : (base_internal::ThrowStdOutOfRange(
+                      "Span::at failed bounds check"),
+                  *(data() + i));
+  }
+
+  // Span::front()
+  //
+  // Returns a reference to the first element of this span.
+  constexpr reference front() const noexcept {
+    return ABSL_ASSERT(size() > 0), *data();
+  }
+
+  // Span::back()
+  //
+  // Returns a reference to the last element of this span.
+  constexpr reference back() const noexcept {
+    return ABSL_ASSERT(size() > 0), *(data() + size() - 1);
+  }
+
+  // Span::begin()
+  //
+  // Returns an iterator to the first element of this span.
+  constexpr iterator begin() const noexcept { return data(); }
+
+  // Span::cbegin()
+  //
+  // Returns a const iterator to the first element of this span.
+  constexpr const_iterator cbegin() const noexcept { return begin(); }
+
+  // Span::end()
+  //
+  // Returns an iterator to the last element of this span.
+  constexpr iterator end() const noexcept { return data() + size(); }
+
+  // Span::cend()
+  //
+  // Returns a const iterator to the last element of this span.
+  constexpr const_iterator cend() const noexcept { return end(); }
+
+  // Span::rbegin()
+  //
+  // Returns a reverse iterator starting at the last element of this span.
+  constexpr reverse_iterator rbegin() const noexcept {
+    return reverse_iterator(end());
+  }
+
+  // Span::crbegin()
+  //
+  // Returns a reverse const iterator starting at the last element of this span.
+  constexpr const_reverse_iterator crbegin() const noexcept { return rbegin(); }
+
+  // Span::rend()
+  //
+  // Returns a reverse iterator starting at the first element of this span.
+  constexpr reverse_iterator rend() const noexcept {
+    return reverse_iterator(begin());
+  }
+
+  // Span::crend()
+  //
+  // Returns a reverse iterator starting at the first element of this span.
+  constexpr const_reverse_iterator crend() const noexcept { return rend(); }
+
+  // Span mutations
+
+  // Span::remove_prefix()
+  //
+  // Removes the first `n` elements from the span.
+  void remove_prefix(size_type n) noexcept {
+    assert(size() >= n);
+    ptr_ += n;
+    len_ -= n;
+  }
+
+  // Span::remove_suffix()
+  //
+  // Removes the last `n` elements from the span.
+  void remove_suffix(size_type n) noexcept {
+    assert(size() >= n);
+    len_ -= n;
+  }
+
+  // Span::subspan()
+  //
+  // Returns a `Span` starting at element `pos` and of length `len`. Both `pos`
+  // and `len` are of type `size_type` and thus non-negative. Parameter `pos`
+  // must be <= size(). Any `len` value that points past the end of the span
+  // will be trimmed to at most size() - `pos`. A default `len` value of `npos`
+  // ensures the returned subspan continues until the end of the span.
+  //
+  // Examples:
+  //
+  //   std::vector<int> vec = {10, 11, 12, 13};
+  //   absl::MakeSpan(vec).subspan(1, 2);  // {11, 12}
+  //   absl::MakeSpan(vec).subspan(2, 8);  // {12, 13}
+  //   absl::MakeSpan(vec).subspan(1);     // {11, 12, 13}
+  //   absl::MakeSpan(vec).subspan(4);     // {}
+  //   absl::MakeSpan(vec).subspan(5);     // throws std::out_of_range
+  constexpr Span subspan(size_type pos = 0, size_type len = npos) const {
+    return (pos <= size())
+               ? Span(data() + pos, span_internal::Min(size() - pos, len))
+               : (base_internal::ThrowStdOutOfRange("pos > size()"), Span());
+  }
+
+  // Span::first()
+  //
+  // Returns a `Span` containing first `len` elements. Parameter `len` is of
+  // type `size_type` and thus non-negative. `len` value must be <= size().
+  //
+  // Examples:
+  //
+  //   std::vector<int> vec = {10, 11, 12, 13};
+  //   absl::MakeSpan(vec).first(1);  // {10}
+  //   absl::MakeSpan(vec).first(3);  // {10, 11, 12}
+  //   absl::MakeSpan(vec).first(5);  // throws std::out_of_range
+  constexpr Span first(size_type len) const {
+    return (len <= size())
+               ? Span(data(), len)
+               : (base_internal::ThrowStdOutOfRange("len > size()"), Span());
+  }
+
+  // Span::last()
+  //
+  // Returns a `Span` containing last `len` elements. Parameter `len` is of
+  // type `size_type` and thus non-negative. `len` value must be <= size().
+  //
+  // Examples:
+  //
+  //   std::vector<int> vec = {10, 11, 12, 13};
+  //   absl::MakeSpan(vec).last(1);  // {13}
+  //   absl::MakeSpan(vec).last(3);  // {11, 12, 13}
+  //   absl::MakeSpan(vec).last(5);  // throws std::out_of_range
+  constexpr Span last(size_type len) const {
+    return (len <= size())
+               ? Span(size() - len + data(), len)
+               : (base_internal::ThrowStdOutOfRange("len > size()"), Span());
+  }
+
+  // Support for absl::Hash.
+  template <typename H>
+  friend H AbslHashValue(H h, Span v) {
+    return H::combine(H::combine_contiguous(std::move(h), v.data(), v.size()),
+                      v.size());
+  }
+
+ private:
+  pointer ptr_;
+  size_type len_;
+};
+
+template <typename T>
+const typename Span<T>::size_type Span<T>::npos;
+
+// Span relationals
+
+// Equality is compared element-by-element, while ordering is lexicographical.
+// We provide three overloads for each operator to cover any combination on the
+// left or right hand side of mutable Span<T>, read-only Span<const T>, and
+// convertible-to-read-only Span<T>.
+// TODO(zhangxy): Due to MSVC overload resolution bug with partial ordering
+// template functions, 5 overloads per operator is needed as a workaround. We
+// should update them to 3 overloads per operator using non-deduced context like
+// string_view, i.e.
+// - (Span<T>, Span<T>)
+// - (Span<T>, non_deduced<Span<const T>>)
+// - (non_deduced<Span<const T>>, Span<T>)
+
+// operator==
+template <typename T>
+bool operator==(Span<T> a, Span<T> b) {
+  return span_internal::EqualImpl<Span, const T>(a, b);
+}
+template <typename T>
+bool operator==(Span<const T> a, Span<T> b) {
+  return span_internal::EqualImpl<Span, const T>(a, b);
+}
+template <typename T>
+bool operator==(Span<T> a, Span<const T> b) {
+  return span_internal::EqualImpl<Span, const T>(a, b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator==(const U& a, Span<T> b) {
+  return span_internal::EqualImpl<Span, const T>(a, b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator==(Span<T> a, const U& b) {
+  return span_internal::EqualImpl<Span, const T>(a, b);
+}
+
+// operator!=
+template <typename T>
+bool operator!=(Span<T> a, Span<T> b) {
+  return !(a == b);
+}
+template <typename T>
+bool operator!=(Span<const T> a, Span<T> b) {
+  return !(a == b);
+}
+template <typename T>
+bool operator!=(Span<T> a, Span<const T> b) {
+  return !(a == b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator!=(const U& a, Span<T> b) {
+  return !(a == b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator!=(Span<T> a, const U& b) {
+  return !(a == b);
+}
+
+// operator<
+template <typename T>
+bool operator<(Span<T> a, Span<T> b) {
+  return span_internal::LessThanImpl<Span, const T>(a, b);
+}
+template <typename T>
+bool operator<(Span<const T> a, Span<T> b) {
+  return span_internal::LessThanImpl<Span, const T>(a, b);
+}
+template <typename T>
+bool operator<(Span<T> a, Span<const T> b) {
+  return span_internal::LessThanImpl<Span, const T>(a, b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator<(const U& a, Span<T> b) {
+  return span_internal::LessThanImpl<Span, const T>(a, b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator<(Span<T> a, const U& b) {
+  return span_internal::LessThanImpl<Span, const T>(a, b);
+}
+
+// operator>
+template <typename T>
+bool operator>(Span<T> a, Span<T> b) {
+  return b < a;
+}
+template <typename T>
+bool operator>(Span<const T> a, Span<T> b) {
+  return b < a;
+}
+template <typename T>
+bool operator>(Span<T> a, Span<const T> b) {
+  return b < a;
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator>(const U& a, Span<T> b) {
+  return b < a;
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator>(Span<T> a, const U& b) {
+  return b < a;
+}
+
+// operator<=
+template <typename T>
+bool operator<=(Span<T> a, Span<T> b) {
+  return !(b < a);
+}
+template <typename T>
+bool operator<=(Span<const T> a, Span<T> b) {
+  return !(b < a);
+}
+template <typename T>
+bool operator<=(Span<T> a, Span<const T> b) {
+  return !(b < a);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator<=(const U& a, Span<T> b) {
+  return !(b < a);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator<=(Span<T> a, const U& b) {
+  return !(b < a);
+}
+
+// operator>=
+template <typename T>
+bool operator>=(Span<T> a, Span<T> b) {
+  return !(a < b);
+}
+template <typename T>
+bool operator>=(Span<const T> a, Span<T> b) {
+  return !(a < b);
+}
+template <typename T>
+bool operator>=(Span<T> a, Span<const T> b) {
+  return !(a < b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator>=(const U& a, Span<T> b) {
+  return !(a < b);
+}
+template <
+    typename T, typename U,
+    typename = span_internal::EnableIfConvertibleTo<U, absl::Span<const T>>>
+bool operator>=(Span<T> a, const U& b) {
+  return !(a < b);
+}
+
+// MakeSpan()
+//
+// Constructs a mutable `Span<T>`, deducing `T` automatically from either a
+// container or pointer+size.
+//
+// Because a read-only `Span<const T>` is implicitly constructed from container
+// types regardless of whether the container itself is a const container,
+// constructing mutable spans of type `Span<T>` from containers requires
+// explicit constructors. The container-accepting version of `MakeSpan()`
+// deduces the type of `T` by the constness of the pointer received from the
+// container's `data()` member. Similarly, the pointer-accepting version returns
+// a `Span<const T>` if `T` is `const`, and a `Span<T>` otherwise.
+//
+// Examples:
+//
+//   void MyRoutine(absl::Span<MyComplicatedType> a) {
+//     ...
+//   };
+//   // my_vector is a container of non-const types
+//   std::vector<MyComplicatedType> my_vector;
+//
+//   // Constructing a Span implicitly attempts to create a Span of type
+//   // `Span<const T>`
+//   MyRoutine(my_vector);                // error, type mismatch
+//
+//   // Explicitly constructing the Span is verbose
+//   MyRoutine(absl::Span<MyComplicatedType>(my_vector));
+//
+//   // Use MakeSpan() to make an absl::Span<T>
+//   MyRoutine(absl::MakeSpan(my_vector));
+//
+//   // Construct a span from an array ptr+size
+//   absl::Span<T> my_span() {
+//     return absl::MakeSpan(&array[0], num_elements_);
+//   }
+//
+template <int&... ExplicitArgumentBarrier, typename T>
+constexpr Span<T> MakeSpan(T* ptr, size_t size) noexcept {
+  return Span<T>(ptr, size);
+}
+
+template <int&... ExplicitArgumentBarrier, typename T>
+Span<T> MakeSpan(T* begin, T* end) noexcept {
+  return ABSL_ASSERT(begin <= end), Span<T>(begin, end - begin);
+}
+
+template <int&... ExplicitArgumentBarrier, typename C>
+constexpr auto MakeSpan(C& c) noexcept  // NOLINT(runtime/references)
+    -> decltype(absl::MakeSpan(span_internal::GetData(c), c.size())) {
+  return MakeSpan(span_internal::GetData(c), c.size());
+}
+
+template <int&... ExplicitArgumentBarrier, typename T, size_t N>
+constexpr Span<T> MakeSpan(T (&array)[N]) noexcept {
+  return Span<T>(array, N);
+}
+
+// MakeConstSpan()
+//
+// Constructs a `Span<const T>` as with `MakeSpan`, deducing `T` automatically,
+// but always returning a `Span<const T>`.
+//
+// Examples:
+//
+//   void ProcessInts(absl::Span<const int> some_ints);
+//
+//   // Call with a pointer and size.
+//   int array[3] = { 0, 0, 0 };
+//   ProcessInts(absl::MakeConstSpan(&array[0], 3));
+//
+//   // Call with a [begin, end) pair.
+//   ProcessInts(absl::MakeConstSpan(&array[0], &array[3]));
+//
+//   // Call directly with an array.
+//   ProcessInts(absl::MakeConstSpan(array));
+//
+//   // Call with a contiguous container.
+//   std::vector<int> some_ints = ...;
+//   ProcessInts(absl::MakeConstSpan(some_ints));
+//   ProcessInts(absl::MakeConstSpan(std::vector<int>{ 0, 0, 0 }));
+//
+template <int&... ExplicitArgumentBarrier, typename T>
+constexpr Span<const T> MakeConstSpan(T* ptr, size_t size) noexcept {
+  return Span<const T>(ptr, size);
+}
+
+template <int&... ExplicitArgumentBarrier, typename T>
+Span<const T> MakeConstSpan(T* begin, T* end) noexcept {
+  return ABSL_ASSERT(begin <= end), Span<const T>(begin, end - begin);
+}
+
+template <int&... ExplicitArgumentBarrier, typename C>
+constexpr auto MakeConstSpan(const C& c) noexcept -> decltype(MakeSpan(c)) {
+  return MakeSpan(c);
+}
+
+template <int&... ExplicitArgumentBarrier, typename T, size_t N>
+constexpr Span<const T> MakeConstSpan(const T (&array)[N]) noexcept {
+  return Span<const T>(array, N);
+}
+ABSL_NAMESPACE_END
+}  // namespace absl
+#endif  // ABSL_TYPES_SPAN_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/types/variant.h b/ChattingApp 000/Pods/abseil/absl/types/variant.h
new file mode 100644
index 0000000..776d19a
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/types/variant.h	
@@ -0,0 +1,861 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// variant.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines an `absl::variant` type for holding a type-safe
+// value of some prescribed set of types (noted as alternative types), and
+// associated functions for managing variants.
+//
+// The `absl::variant` type is a form of type-safe union. An `absl::variant`
+// should always hold a value of one of its alternative types (except in the
+// "valueless by exception state" -- see below). A default-constructed
+// `absl::variant` will hold the value of its first alternative type, provided
+// it is default-constructible.
+//
+// In exceptional cases due to error, an `absl::variant` can hold no
+// value (known as a "valueless by exception" state), though this is not the
+// norm.
+//
+// As with `absl::optional`, an `absl::variant` -- when it holds a value --
+// allocates a value of that type directly within the `variant` itself; it
+// cannot hold a reference, array, or the type `void`; it can, however, hold a
+// pointer to externally managed memory.
+//
+// `absl::variant` is a C++11 compatible version of the C++17 `std::variant`
+// abstraction and is designed to be a drop-in replacement for code compliant
+// with C++17.
+
+#ifndef ABSL_TYPES_VARIANT_H_
+#define ABSL_TYPES_VARIANT_H_
+
+#include "absl/base/config.h"
+#include "absl/utility/utility.h"
+
+#ifdef ABSL_USES_STD_VARIANT
+
+#include <variant>  // IWYU pragma: export
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+using std::bad_variant_access;
+using std::get;
+using std::get_if;
+using std::holds_alternative;
+using std::monostate;
+using std::variant;
+using std::variant_alternative;
+using std::variant_alternative_t;
+using std::variant_npos;
+using std::variant_size;
+using std::variant_size_v;
+using std::visit;
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#else  // ABSL_USES_STD_VARIANT
+
+#include <functional>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/macros.h"
+#include "absl/base/port.h"
+#include "absl/meta/type_traits.h"
+#include "absl/types/internal/variant.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// absl::variant
+// -----------------------------------------------------------------------------
+//
+// An `absl::variant` type is a form of type-safe union. An `absl::variant` --
+// except in exceptional cases -- always holds a value of one of its alternative
+// types.
+//
+// Example:
+//
+//   // Construct a variant that holds either an integer or a std::string and
+//   // assign it to a std::string.
+//   absl::variant<int, std::string> v = std::string("abc");
+//
+//   // A default-constructed variant will hold a value-initialized value of
+//   // the first alternative type.
+//   auto a = absl::variant<int, std::string>();   // Holds an int of value '0'.
+//
+//   // variants are assignable.
+//
+//   // copy assignment
+//   auto v1 = absl::variant<int, std::string>("abc");
+//   auto v2 = absl::variant<int, std::string>(10);
+//   v2 = v1;  // copy assign
+//
+//   // move assignment
+//   auto v1 = absl::variant<int, std::string>("abc");
+//   v1 = absl::variant<int, std::string>(10);
+//
+//   // assignment through type conversion
+//   a = 128;         // variant contains int
+//   a = "128";       // variant contains std::string
+//
+// An `absl::variant` holding a value of one of its alternative types `T` holds
+// an allocation of `T` directly within the variant itself. An `absl::variant`
+// is not allowed to allocate additional storage, such as dynamic memory, to
+// allocate the contained value. The contained value shall be allocated in a
+// region of the variant storage suitably aligned for all alternative types.
+template <typename... Ts>
+class variant;
+
+// swap()
+//
+// Swaps two `absl::variant` values. This function is equivalent to `v.swap(w)`
+// where `v` and `w` are `absl::variant` types.
+//
+// Note that this function requires all alternative types to be both swappable
+// and move-constructible, because any two variants may refer to either the same
+// type (in which case, they will be swapped) or to two different types (in
+// which case the values will need to be moved).
+//
+template <
+    typename... Ts,
+    absl::enable_if_t<
+        absl::conjunction<std::is_move_constructible<Ts>...,
+                          type_traits_internal::IsSwappable<Ts>...>::value,
+        int> = 0>
+void swap(variant<Ts...>& v, variant<Ts...>& w) noexcept(noexcept(v.swap(w))) {
+  v.swap(w);
+}
+
+// variant_size
+//
+// Returns the number of alternative types available for a given `absl::variant`
+// type as a compile-time constant expression. As this is a class template, it
+// is not generally useful for accessing the number of alternative types of
+// any given `absl::variant` instance.
+//
+// Example:
+//
+//   auto a = absl::variant<int, std::string>;
+//   constexpr int num_types =
+//       absl::variant_size<absl::variant<int, std::string>>();
+//
+//   // You can also use the member constant `value`.
+//   constexpr int num_types =
+//       absl::variant_size<absl::variant<int, std::string>>::value;
+//
+//   // `absl::variant_size` is more valuable for use in generic code:
+//   template <typename Variant>
+//   constexpr bool IsVariantMultivalue() {
+//       return absl::variant_size<Variant>() > 1;
+//   }
+//
+// Note that the set of cv-qualified specializations of `variant_size` are
+// provided to ensure that those specializations compile (especially when passed
+// within template logic).
+template <class T>
+struct variant_size;
+
+template <class... Ts>
+struct variant_size<variant<Ts...>>
+    : std::integral_constant<std::size_t, sizeof...(Ts)> {};
+
+// Specialization of `variant_size` for const qualified variants.
+template <class T>
+struct variant_size<const T> : variant_size<T>::type {};
+
+// Specialization of `variant_size` for volatile qualified variants.
+template <class T>
+struct variant_size<volatile T> : variant_size<T>::type {};
+
+// Specialization of `variant_size` for const volatile qualified variants.
+template <class T>
+struct variant_size<const volatile T> : variant_size<T>::type {};
+
+// variant_alternative
+//
+// Returns the alternative type for a given `absl::variant` at the passed
+// index value as a compile-time constant expression. As this is a class
+// template resulting in a type, it is not useful for access of the run-time
+// value of any given `absl::variant` variable.
+//
+// Example:
+//
+//   // The type of the 0th alternative is "int".
+//   using alternative_type_0
+//     = absl::variant_alternative<0, absl::variant<int, std::string>>::type;
+//
+//   static_assert(std::is_same<alternative_type_0, int>::value, "");
+//
+//   // `absl::variant_alternative` is more valuable for use in generic code:
+//   template <typename Variant>
+//   constexpr bool IsFirstElementTrivial() {
+//       return std::is_trivial_v<variant_alternative<0, Variant>::type>;
+//   }
+//
+// Note that the set of cv-qualified specializations of `variant_alternative`
+// are provided to ensure that those specializations compile (especially when
+// passed within template logic).
+template <std::size_t I, class T>
+struct variant_alternative;
+
+template <std::size_t I, class... Types>
+struct variant_alternative<I, variant<Types...>> {
+  using type =
+      variant_internal::VariantAlternativeSfinaeT<I, variant<Types...>>;
+};
+
+// Specialization of `variant_alternative` for const qualified variants.
+template <std::size_t I, class T>
+struct variant_alternative<I, const T> {
+  using type = const typename variant_alternative<I, T>::type;
+};
+
+// Specialization of `variant_alternative` for volatile qualified variants.
+template <std::size_t I, class T>
+struct variant_alternative<I, volatile T> {
+  using type = volatile typename variant_alternative<I, T>::type;
+};
+
+// Specialization of `variant_alternative` for const volatile qualified
+// variants.
+template <std::size_t I, class T>
+struct variant_alternative<I, const volatile T> {
+  using type = const volatile typename variant_alternative<I, T>::type;
+};
+
+// Template type alias for variant_alternative<I, T>::type.
+//
+// Example:
+//
+//   using alternative_type_0
+//     = absl::variant_alternative_t<0, absl::variant<int, std::string>>;
+//   static_assert(std::is_same<alternative_type_0, int>::value, "");
+template <std::size_t I, class T>
+using variant_alternative_t = typename variant_alternative<I, T>::type;
+
+// holds_alternative()
+//
+// Checks whether the given variant currently holds a given alternative type,
+// returning `true` if so.
+//
+// Example:
+//
+//   absl::variant<int, std::string> foo = 42;
+//   if (absl::holds_alternative<int>(foo)) {
+//       std::cout << "The variant holds an integer";
+//   }
+template <class T, class... Types>
+constexpr bool holds_alternative(const variant<Types...>& v) noexcept {
+  static_assert(
+      variant_internal::UnambiguousIndexOfImpl<variant<Types...>, T,
+                                               0>::value != sizeof...(Types),
+      "The type T must occur exactly once in Types...");
+  return v.index() ==
+         variant_internal::UnambiguousIndexOf<variant<Types...>, T>::value;
+}
+
+// get()
+//
+// Returns a reference to the value currently within a given variant, using
+// either a unique alternative type amongst the variant's set of alternative
+// types, or the variant's index value. Attempting to get a variant's value
+// using a type that is not unique within the variant's set of alternative types
+// is a compile-time error. If the index of the alternative being specified is
+// different from the index of the alternative that is currently stored, throws
+// `absl::bad_variant_access`.
+//
+// Example:
+//
+//   auto a = absl::variant<int, std::string>;
+//
+//   // Get the value by type (if unique).
+//   int i = absl::get<int>(a);
+//
+//   auto b = absl::variant<int, int>;
+//
+//   // Getting the value by a type that is not unique is ill-formed.
+//   int j = absl::get<int>(b);     // Compile Error!
+//
+//   // Getting value by index not ambiguous and allowed.
+//   int k = absl::get<1>(b);
+
+// Overload for getting a variant's lvalue by type.
+template <class T, class... Types>
+constexpr T& get(variant<Types...>& v) {  // NOLINT
+  return variant_internal::VariantCoreAccess::CheckedAccess<
+      variant_internal::IndexOf<T, Types...>::value>(v);
+}
+
+// Overload for getting a variant's rvalue by type.
+// Note: `absl::move()` is required to allow use of constexpr in C++11.
+template <class T, class... Types>
+constexpr T&& get(variant<Types...>&& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<
+      variant_internal::IndexOf<T, Types...>::value>(absl::move(v));
+}
+
+// Overload for getting a variant's const lvalue by type.
+template <class T, class... Types>
+constexpr const T& get(const variant<Types...>& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<
+      variant_internal::IndexOf<T, Types...>::value>(v);
+}
+
+// Overload for getting a variant's const rvalue by type.
+// Note: `absl::move()` is required to allow use of constexpr in C++11.
+template <class T, class... Types>
+constexpr const T&& get(const variant<Types...>&& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<
+      variant_internal::IndexOf<T, Types...>::value>(absl::move(v));
+}
+
+// Overload for getting a variant's lvalue by index.
+template <std::size_t I, class... Types>
+constexpr variant_alternative_t<I, variant<Types...>>& get(
+    variant<Types...>& v) {  // NOLINT
+  return variant_internal::VariantCoreAccess::CheckedAccess<I>(v);
+}
+
+// Overload for getting a variant's rvalue by index.
+// Note: `absl::move()` is required to allow use of constexpr in C++11.
+template <std::size_t I, class... Types>
+constexpr variant_alternative_t<I, variant<Types...>>&& get(
+    variant<Types...>&& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<I>(absl::move(v));
+}
+
+// Overload for getting a variant's const lvalue by index.
+template <std::size_t I, class... Types>
+constexpr const variant_alternative_t<I, variant<Types...>>& get(
+    const variant<Types...>& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<I>(v);
+}
+
+// Overload for getting a variant's const rvalue by index.
+// Note: `absl::move()` is required to allow use of constexpr in C++11.
+template <std::size_t I, class... Types>
+constexpr const variant_alternative_t<I, variant<Types...>>&& get(
+    const variant<Types...>&& v) {
+  return variant_internal::VariantCoreAccess::CheckedAccess<I>(absl::move(v));
+}
+
+// get_if()
+//
+// Returns a pointer to the value currently stored within a given variant, if
+// present, using either a unique alternative type amongst the variant's set of
+// alternative types, or the variant's index value. If such a value does not
+// exist, returns `nullptr`.
+//
+// As with `get`, attempting to get a variant's value using a type that is not
+// unique within the variant's set of alternative types is a compile-time error.
+
+// Overload for getting a pointer to the value stored in the given variant by
+// index.
+template <std::size_t I, class... Types>
+constexpr absl::add_pointer_t<variant_alternative_t<I, variant<Types...>>>
+get_if(variant<Types...>* v) noexcept {
+  return (v != nullptr && v->index() == I)
+             ? std::addressof(
+                   variant_internal::VariantCoreAccess::Access<I>(*v))
+             : nullptr;
+}
+
+// Overload for getting a pointer to the const value stored in the given
+// variant by index.
+template <std::size_t I, class... Types>
+constexpr absl::add_pointer_t<const variant_alternative_t<I, variant<Types...>>>
+get_if(const variant<Types...>* v) noexcept {
+  return (v != nullptr && v->index() == I)
+             ? std::addressof(
+                   variant_internal::VariantCoreAccess::Access<I>(*v))
+             : nullptr;
+}
+
+// Overload for getting a pointer to the value stored in the given variant by
+// type.
+template <class T, class... Types>
+constexpr absl::add_pointer_t<T> get_if(variant<Types...>* v) noexcept {
+  return absl::get_if<variant_internal::IndexOf<T, Types...>::value>(v);
+}
+
+// Overload for getting a pointer to the const value stored in the given variant
+// by type.
+template <class T, class... Types>
+constexpr absl::add_pointer_t<const T> get_if(
+    const variant<Types...>* v) noexcept {
+  return absl::get_if<variant_internal::IndexOf<T, Types...>::value>(v);
+}
+
+// visit()
+//
+// Calls a provided functor on a given set of variants. `absl::visit()` is
+// commonly used to conditionally inspect the state of a given variant (or set
+// of variants).
+//
+// The functor must return the same type when called with any of the variants'
+// alternatives.
+//
+// Example:
+//
+//   // Define a visitor functor
+//   struct GetVariant {
+//       template<typename T>
+//       void operator()(const T& i) const {
+//         std::cout << "The variant's value is: " << i;
+//       }
+//   };
+//
+//   // Declare our variant, and call `absl::visit()` on it.
+//   // Note that `GetVariant()` returns void in either case.
+//   absl::variant<int, std::string> foo = std::string("foo");
+//   GetVariant visitor;
+//   absl::visit(visitor, foo);  // Prints `The variant's value is: foo'
+template <typename Visitor, typename... Variants>
+variant_internal::VisitResult<Visitor, Variants...> visit(Visitor&& vis,
+                                                          Variants&&... vars) {
+  return variant_internal::
+      VisitIndices<variant_size<absl::decay_t<Variants> >::value...>::Run(
+          variant_internal::PerformVisitation<Visitor, Variants...>{
+              std::forward_as_tuple(absl::forward<Variants>(vars)...),
+              absl::forward<Visitor>(vis)},
+          vars.index()...);
+}
+
+// monostate
+//
+// The monostate class serves as a first alternative type for a variant for
+// which the first variant type is otherwise not default-constructible.
+struct monostate {};
+
+// `absl::monostate` Relational Operators
+
+constexpr bool operator<(monostate, monostate) noexcept { return false; }
+constexpr bool operator>(monostate, monostate) noexcept { return false; }
+constexpr bool operator<=(monostate, monostate) noexcept { return true; }
+constexpr bool operator>=(monostate, monostate) noexcept { return true; }
+constexpr bool operator==(monostate, monostate) noexcept { return true; }
+constexpr bool operator!=(monostate, monostate) noexcept { return false; }
+
+
+//------------------------------------------------------------------------------
+// `absl::variant` Template Definition
+//------------------------------------------------------------------------------
+template <typename T0, typename... Tn>
+class variant<T0, Tn...> : private variant_internal::VariantBase<T0, Tn...> {
+  static_assert(absl::conjunction<std::is_object<T0>,
+                                  std::is_object<Tn>...>::value,
+                "Attempted to instantiate a variant containing a non-object "
+                "type.");
+  // Intentionally not qualifying `negation` with `absl::` to work around a bug
+  // in MSVC 2015 with inline namespace and variadic template.
+  static_assert(absl::conjunction<negation<std::is_array<T0> >,
+                                  negation<std::is_array<Tn> >...>::value,
+                "Attempted to instantiate a variant containing an array type.");
+  static_assert(absl::conjunction<std::is_nothrow_destructible<T0>,
+                                  std::is_nothrow_destructible<Tn>...>::value,
+                "Attempted to instantiate a variant containing a non-nothrow "
+                "destructible type.");
+
+  friend struct variant_internal::VariantCoreAccess;
+
+ private:
+  using Base = variant_internal::VariantBase<T0, Tn...>;
+
+ public:
+  // Constructors
+
+  // Constructs a variant holding a default-initialized value of the first
+  // alternative type.
+  constexpr variant() /*noexcept(see 111above)*/ = default;
+
+  // Copy constructor, standard semantics
+  variant(const variant& other) = default;
+
+  // Move constructor, standard semantics
+  variant(variant&& other) /*noexcept(see above)*/ = default;
+
+  // Constructs a variant of an alternative type specified by overload
+  // resolution of the provided forwarding arguments through
+  // direct-initialization.
+  //
+  // Note: If the selected constructor is a constexpr constructor, this
+  // constructor shall be a constexpr constructor.
+  //
+  // NOTE: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0608r1.html
+  // has been voted passed the design phase in the C++ standard meeting in Mar
+  // 2018. It will be implemented and integrated into `absl::variant`.
+  template <
+      class T,
+      std::size_t I = std::enable_if<
+          variant_internal::IsNeitherSelfNorInPlace<variant,
+                                                    absl::decay_t<T>>::value,
+          variant_internal::IndexOfConstructedType<variant, T>>::type::value,
+      class Tj = absl::variant_alternative_t<I, variant>,
+      absl::enable_if_t<std::is_constructible<Tj, T>::value>* =
+          nullptr>
+  constexpr variant(T&& t) noexcept(std::is_nothrow_constructible<Tj, T>::value)
+      : Base(variant_internal::EmplaceTag<I>(), absl::forward<T>(t)) {}
+
+  // Constructs a variant of an alternative type from the arguments through
+  // direct-initialization.
+  //
+  // Note: If the selected constructor is a constexpr constructor, this
+  // constructor shall be a constexpr constructor.
+  template <class T, class... Args,
+            typename std::enable_if<std::is_constructible<
+                variant_internal::UnambiguousTypeOfT<variant, T>,
+                Args...>::value>::type* = nullptr>
+  constexpr explicit variant(in_place_type_t<T>, Args&&... args)
+      : Base(variant_internal::EmplaceTag<
+                 variant_internal::UnambiguousIndexOf<variant, T>::value>(),
+             absl::forward<Args>(args)...) {}
+
+  // Constructs a variant of an alternative type from an initializer list
+  // and other arguments through direct-initialization.
+  //
+  // Note: If the selected constructor is a constexpr constructor, this
+  // constructor shall be a constexpr constructor.
+  template <class T, class U, class... Args,
+            typename std::enable_if<std::is_constructible<
+                variant_internal::UnambiguousTypeOfT<variant, T>,
+                std::initializer_list<U>&, Args...>::value>::type* = nullptr>
+  constexpr explicit variant(in_place_type_t<T>, std::initializer_list<U> il,
+                             Args&&... args)
+      : Base(variant_internal::EmplaceTag<
+                 variant_internal::UnambiguousIndexOf<variant, T>::value>(),
+             il, absl::forward<Args>(args)...) {}
+
+  // Constructs a variant of an alternative type from a provided index,
+  // through value-initialization using the provided forwarded arguments.
+  template <std::size_t I, class... Args,
+            typename std::enable_if<std::is_constructible<
+                variant_internal::VariantAlternativeSfinaeT<I, variant>,
+                Args...>::value>::type* = nullptr>
+  constexpr explicit variant(in_place_index_t<I>, Args&&... args)
+      : Base(variant_internal::EmplaceTag<I>(), absl::forward<Args>(args)...) {}
+
+  // Constructs a variant of an alternative type from a provided index,
+  // through value-initialization of an initializer list and the provided
+  // forwarded arguments.
+  template <std::size_t I, class U, class... Args,
+            typename std::enable_if<std::is_constructible<
+                variant_internal::VariantAlternativeSfinaeT<I, variant>,
+                std::initializer_list<U>&, Args...>::value>::type* = nullptr>
+  constexpr explicit variant(in_place_index_t<I>, std::initializer_list<U> il,
+                             Args&&... args)
+      : Base(variant_internal::EmplaceTag<I>(), il,
+             absl::forward<Args>(args)...) {}
+
+  // Destructors
+
+  // Destroys the variant's currently contained value, provided that
+  // `absl::valueless_by_exception()` is false.
+  ~variant() = default;
+
+  // Assignment Operators
+
+  // Copy assignment operator
+  variant& operator=(const variant& other) = default;
+
+  // Move assignment operator
+  variant& operator=(variant&& other) /*noexcept(see above)*/ = default;
+
+  // Converting assignment operator
+  //
+  // NOTE: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0608r1.html
+  // has been voted passed the design phase in the C++ standard meeting in Mar
+  // 2018. It will be implemented and integrated into `absl::variant`.
+  template <
+      class T,
+      std::size_t I = std::enable_if<
+          !std::is_same<absl::decay_t<T>, variant>::value,
+          variant_internal::IndexOfConstructedType<variant, T>>::type::value,
+      class Tj = absl::variant_alternative_t<I, variant>,
+      typename std::enable_if<std::is_assignable<Tj&, T>::value &&
+                              std::is_constructible<Tj, T>::value>::type* =
+          nullptr>
+  variant& operator=(T&& t) noexcept(
+      std::is_nothrow_assignable<Tj&, T>::value&&
+          std::is_nothrow_constructible<Tj, T>::value) {
+    variant_internal::VisitIndices<sizeof...(Tn) + 1>::Run(
+        variant_internal::VariantCoreAccess::MakeConversionAssignVisitor(
+            this, absl::forward<T>(t)),
+        index());
+
+    return *this;
+  }
+
+
+  // emplace() Functions
+
+  // Constructs a value of the given alternative type T within the variant.
+  //
+  // Example:
+  //
+  //   absl::variant<std::vector<int>, int, std::string> v;
+  //   v.emplace<int>(99);
+  //   v.emplace<std::string>("abc");
+  template <
+      class T, class... Args,
+      typename std::enable_if<std::is_constructible<
+          absl::variant_alternative_t<
+              variant_internal::UnambiguousIndexOf<variant, T>::value, variant>,
+          Args...>::value>::type* = nullptr>
+  T& emplace(Args&&... args) {
+    return variant_internal::VariantCoreAccess::Replace<
+        variant_internal::UnambiguousIndexOf<variant, T>::value>(
+        this, absl::forward<Args>(args)...);
+  }
+
+  // Constructs a value of the given alternative type T within the variant using
+  // an initializer list.
+  //
+  // Example:
+  //
+  //   absl::variant<std::vector<int>, int, std::string> v;
+  //   v.emplace<std::vector<int>>({0, 1, 2});
+  template <
+      class T, class U, class... Args,
+      typename std::enable_if<std::is_constructible<
+          absl::variant_alternative_t<
+              variant_internal::UnambiguousIndexOf<variant, T>::value, variant>,
+          std::initializer_list<U>&, Args...>::value>::type* = nullptr>
+  T& emplace(std::initializer_list<U> il, Args&&... args) {
+    return variant_internal::VariantCoreAccess::Replace<
+        variant_internal::UnambiguousIndexOf<variant, T>::value>(
+        this, il, absl::forward<Args>(args)...);
+  }
+
+  // Destroys the current value of the variant (provided that
+  // `absl::valueless_by_exception()` is false, and constructs a new value at
+  // the given index.
+  //
+  // Example:
+  //
+  //   absl::variant<std::vector<int>, int, int> v;
+  //   v.emplace<1>(99);
+  //   v.emplace<2>(98);
+  //   v.emplace<int>(99);  // Won't compile. 'int' isn't a unique type.
+  template <std::size_t I, class... Args,
+            typename std::enable_if<
+                std::is_constructible<absl::variant_alternative_t<I, variant>,
+                                      Args...>::value>::type* = nullptr>
+  absl::variant_alternative_t<I, variant>& emplace(Args&&... args) {
+    return variant_internal::VariantCoreAccess::Replace<I>(
+        this, absl::forward<Args>(args)...);
+  }
+
+  // Destroys the current value of the variant (provided that
+  // `absl::valueless_by_exception()` is false, and constructs a new value at
+  // the given index using an initializer list and the provided arguments.
+  //
+  // Example:
+  //
+  //   absl::variant<std::vector<int>, int, int> v;
+  //   v.emplace<0>({0, 1, 2});
+  template <std::size_t I, class U, class... Args,
+            typename std::enable_if<std::is_constructible<
+                absl::variant_alternative_t<I, variant>,
+                std::initializer_list<U>&, Args...>::value>::type* = nullptr>
+  absl::variant_alternative_t<I, variant>& emplace(std::initializer_list<U> il,
+                                                   Args&&... args) {
+    return variant_internal::VariantCoreAccess::Replace<I>(
+        this, il, absl::forward<Args>(args)...);
+  }
+
+  // variant::valueless_by_exception()
+  //
+  // Returns false if and only if the variant currently holds a valid value.
+  constexpr bool valueless_by_exception() const noexcept {
+    return this->index_ == absl::variant_npos;
+  }
+
+  // variant::index()
+  //
+  // Returns the index value of the variant's currently selected alternative
+  // type.
+  constexpr std::size_t index() const noexcept { return this->index_; }
+
+  // variant::swap()
+  //
+  // Swaps the values of two variant objects.
+  //
+  void swap(variant& rhs) noexcept(
+      absl::conjunction<
+          std::is_nothrow_move_constructible<T0>,
+          std::is_nothrow_move_constructible<Tn>...,
+          type_traits_internal::IsNothrowSwappable<T0>,
+          type_traits_internal::IsNothrowSwappable<Tn>...>::value) {
+    return variant_internal::VisitIndices<sizeof...(Tn) + 1>::Run(
+        variant_internal::Swap<T0, Tn...>{this, &rhs}, rhs.index());
+  }
+};
+
+// We need a valid declaration of variant<> for SFINAE and overload resolution
+// to work properly above, but we don't need a full declaration since this type
+// will never be constructed. This declaration, though incomplete, suffices.
+template <>
+class variant<>;
+
+//------------------------------------------------------------------------------
+// Relational Operators
+//------------------------------------------------------------------------------
+//
+// If neither operand is in the `variant::valueless_by_exception` state:
+//
+//   * If the index of both variants is the same, the relational operator
+//     returns the result of the corresponding relational operator for the
+//     corresponding alternative type.
+//   * If the index of both variants is not the same, the relational operator
+//     returns the result of that operation applied to the value of the left
+//     operand's index and the value of the right operand's index.
+//   * If at least one operand is in the valueless_by_exception state:
+//     - A variant in the valueless_by_exception state is only considered equal
+//       to another variant in the valueless_by_exception state.
+//     - If exactly one operand is in the valueless_by_exception state, the
+//       variant in the valueless_by_exception state is less than the variant
+//       that is not in the valueless_by_exception state.
+//
+// Note: The value 1 is added to each index in the relational comparisons such
+// that the index corresponding to the valueless_by_exception state wraps around
+// to 0 (the lowest value for the index type), and the remaining indices stay in
+// the same relative order.
+
+// Equal-to operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveEqualT<Types...> operator==(
+    const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() == b.index()) &&
+         variant_internal::VisitIndices<sizeof...(Types)>::Run(
+             variant_internal::EqualsOp<Types...>{&a, &b}, a.index());
+}
+
+// Not equal operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveNotEqualT<Types...> operator!=(
+    const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() != b.index()) ||
+         variant_internal::VisitIndices<sizeof...(Types)>::Run(
+             variant_internal::NotEqualsOp<Types...>{&a, &b}, a.index());
+}
+
+// Less-than operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveLessThanT<Types...> operator<(
+    const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() != b.index())
+             ? (a.index() + 1) < (b.index() + 1)
+             : variant_internal::VisitIndices<sizeof...(Types)>::Run(
+                   variant_internal::LessThanOp<Types...>{&a, &b}, a.index());
+}
+
+// Greater-than operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveGreaterThanT<Types...> operator>(
+    const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() != b.index())
+             ? (a.index() + 1) > (b.index() + 1)
+             : variant_internal::VisitIndices<sizeof...(Types)>::Run(
+                   variant_internal::GreaterThanOp<Types...>{&a, &b},
+                   a.index());
+}
+
+// Less-than or equal-to operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveLessThanOrEqualT<Types...> operator<=(
+    const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() != b.index())
+             ? (a.index() + 1) < (b.index() + 1)
+             : variant_internal::VisitIndices<sizeof...(Types)>::Run(
+                   variant_internal::LessThanOrEqualsOp<Types...>{&a, &b},
+                   a.index());
+}
+
+// Greater-than or equal-to operator
+template <typename... Types>
+constexpr variant_internal::RequireAllHaveGreaterThanOrEqualT<Types...>
+operator>=(const variant<Types...>& a, const variant<Types...>& b) {
+  return (a.index() != b.index())
+             ? (a.index() + 1) > (b.index() + 1)
+             : variant_internal::VisitIndices<sizeof...(Types)>::Run(
+                   variant_internal::GreaterThanOrEqualsOp<Types...>{&a, &b},
+                   a.index());
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+namespace std {
+
+// hash()
+template <>  // NOLINT
+struct hash<absl::monostate> {
+  std::size_t operator()(absl::monostate) const { return 0; }
+};
+
+template <class... T>  // NOLINT
+struct hash<absl::variant<T...>>
+    : absl::variant_internal::VariantHashBase<absl::variant<T...>, void,
+                                              absl::remove_const_t<T>...> {};
+
+}  // namespace std
+
+#endif  // ABSL_USES_STD_VARIANT
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace variant_internal {
+
+// Helper visitor for converting a variant<Ts...>` into another type (mostly
+// variant) that can be constructed from any type.
+template <typename To>
+struct ConversionVisitor {
+  template <typename T>
+  To operator()(T&& v) const {
+    return To(std::forward<T>(v));
+  }
+};
+
+}  // namespace variant_internal
+
+// ConvertVariantTo()
+//
+// Helper functions to convert an `absl::variant` to a variant of another set of
+// types, provided that the alternative type of the new variant type can be
+// converted from any type in the source variant.
+//
+// Example:
+//
+//   absl::variant<name1, name2, float> InternalReq(const Req&);
+//
+//   // name1 and name2 are convertible to name
+//   absl::variant<name, float> ExternalReq(const Req& req) {
+//     return absl::ConvertVariantTo<absl::variant<name, float>>(
+//              InternalReq(req));
+//   }
+template <typename To, typename Variant>
+To ConvertVariantTo(Variant&& variant) {
+  return absl::visit(variant_internal::ConversionVisitor<To>{},
+                     std::forward<Variant>(variant));
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_TYPES_VARIANT_H_
diff --git a/ChattingApp 000/Pods/abseil/absl/utility/utility.h b/ChattingApp 000/Pods/abseil/absl/utility/utility.h
new file mode 100644
index 0000000..e6647c7
--- /dev/null
+++ b/ChattingApp 000/Pods/abseil/absl/utility/utility.h	
@@ -0,0 +1,350 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This header file contains C++11 versions of standard <utility> header
+// abstractions available within C++14 and C++17, and are designed to be drop-in
+// replacement for code compliant with C++14 and C++17.
+//
+// The following abstractions are defined:
+//
+//   * integer_sequence<T, Ints...>  == std::integer_sequence<T, Ints...>
+//   * index_sequence<Ints...>       == std::index_sequence<Ints...>
+//   * make_integer_sequence<T, N>   == std::make_integer_sequence<T, N>
+//   * make_index_sequence<N>        == std::make_index_sequence<N>
+//   * index_sequence_for<Ts...>     == std::index_sequence_for<Ts...>
+//   * apply<Functor, Tuple>         == std::apply<Functor, Tuple>
+//   * exchange<T>                   == std::exchange<T>
+//   * make_from_tuple<T>            == std::make_from_tuple<T>
+//
+// This header file also provides the tag types `in_place_t`, `in_place_type_t`,
+// and `in_place_index_t`, as well as the constant `in_place`, and
+// `constexpr` `std::move()` and `std::forward()` implementations in C++11.
+//
+// References:
+//
+//  https://en.cppreference.com/w/cpp/utility/integer_sequence
+//  https://en.cppreference.com/w/cpp/utility/apply
+//  http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3658.html
+
+#ifndef ABSL_UTILITY_UTILITY_H_
+#define ABSL_UTILITY_UTILITY_H_
+
+#include <cstddef>
+#include <cstdlib>
+#include <tuple>
+#include <utility>
+
+#include "absl/base/config.h"
+#include "absl/base/internal/inline_variable.h"
+#include "absl/base/internal/invoke.h"
+#include "absl/meta/type_traits.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// integer_sequence
+//
+// Class template representing a compile-time integer sequence. An instantiation
+// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
+// type through its template arguments (which is a common need when
+// working with C++11 variadic templates). `absl::integer_sequence` is designed
+// to be a drop-in replacement for C++14's `std::integer_sequence`.
+//
+// Example:
+//
+//   template< class T, T... Ints >
+//   void user_function(integer_sequence<T, Ints...>);
+//
+//   int main()
+//   {
+//     // user_function's `T` will be deduced to `int` and `Ints...`
+//     // will be deduced to `0, 1, 2, 3, 4`.
+//     user_function(make_integer_sequence<int, 5>());
+//   }
+template <typename T, T... Ints>
+struct integer_sequence {
+  using value_type = T;
+  static constexpr size_t size() noexcept { return sizeof...(Ints); }
+};
+
+// index_sequence
+//
+// A helper template for an `integer_sequence` of `size_t`,
+// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
+// `std::index_sequence`.
+template <size_t... Ints>
+using index_sequence = integer_sequence<size_t, Ints...>;
+
+namespace utility_internal {
+
+template <typename Seq, size_t SeqSize, size_t Rem>
+struct Extend;
+
+// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 0> {
+  using type = integer_sequence<T, Ints..., (Ints + SeqSize)...>;
+};
+
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 1> {
+  using type = integer_sequence<T, Ints..., (Ints + SeqSize)..., 2 * SeqSize>;
+};
+
+// Recursion helper for 'make_integer_sequence<T, N>'.
+// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
+template <typename T, size_t N>
+struct Gen {
+  using type =
+      typename Extend<typename Gen<T, N / 2>::type, N / 2, N % 2>::type;
+};
+
+template <typename T>
+struct Gen<T, 0> {
+  using type = integer_sequence<T>;
+};
+
+template <typename T>
+struct InPlaceTypeTag {
+  explicit InPlaceTypeTag() = delete;
+  InPlaceTypeTag(const InPlaceTypeTag&) = delete;
+  InPlaceTypeTag& operator=(const InPlaceTypeTag&) = delete;
+};
+
+template <size_t I>
+struct InPlaceIndexTag {
+  explicit InPlaceIndexTag() = delete;
+  InPlaceIndexTag(const InPlaceIndexTag&) = delete;
+  InPlaceIndexTag& operator=(const InPlaceIndexTag&) = delete;
+};
+
+}  // namespace utility_internal
+
+// Compile-time sequences of integers
+
+// make_integer_sequence
+//
+// This template alias is equivalent to
+// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
+// replacement for C++14's `std::make_integer_sequence`.
+template <typename T, T N>
+using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
+
+// make_index_sequence
+//
+// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
+// and is designed to be a drop-in replacement for C++14's
+// `std::make_index_sequence`.
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+
+// index_sequence_for
+//
+// Converts a typename pack into an index sequence of the same length, and
+// is designed to be a drop-in replacement for C++14's
+// `std::index_sequence_for()`
+template <typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+// Tag types
+
+#ifdef ABSL_USES_STD_OPTIONAL
+
+using std::in_place_t;
+using std::in_place;
+
+#else  // ABSL_USES_STD_OPTIONAL
+
+// in_place_t
+//
+// Tag type used to specify in-place construction, such as with
+// `absl::optional`, designed to be a drop-in replacement for C++17's
+// `std::in_place_t`.
+struct in_place_t {};
+
+ABSL_INTERNAL_INLINE_CONSTEXPR(in_place_t, in_place, {});
+
+#endif  // ABSL_USES_STD_OPTIONAL
+
+#if defined(ABSL_USES_STD_ANY) || defined(ABSL_USES_STD_VARIANT)
+using std::in_place_type;
+using std::in_place_type_t;
+#else
+
+// in_place_type_t
+//
+// Tag type used for in-place construction when the type to construct needs to
+// be specified, such as with `absl::any`, designed to be a drop-in replacement
+// for C++17's `std::in_place_type_t`.
+template <typename T>
+using in_place_type_t = void (*)(utility_internal::InPlaceTypeTag<T>);
+
+template <typename T>
+void in_place_type(utility_internal::InPlaceTypeTag<T>) {}
+#endif  // ABSL_USES_STD_ANY || ABSL_USES_STD_VARIANT
+
+#ifdef ABSL_USES_STD_VARIANT
+using std::in_place_index;
+using std::in_place_index_t;
+#else
+
+// in_place_index_t
+//
+// Tag type used for in-place construction when the type to construct needs to
+// be specified, such as with `absl::any`, designed to be a drop-in replacement
+// for C++17's `std::in_place_index_t`.
+template <size_t I>
+using in_place_index_t = void (*)(utility_internal::InPlaceIndexTag<I>);
+
+template <size_t I>
+void in_place_index(utility_internal::InPlaceIndexTag<I>) {}
+#endif  // ABSL_USES_STD_VARIANT
+
+// Constexpr move and forward
+
+// move()
+//
+// A constexpr version of `std::move()`, designed to be a drop-in replacement
+// for C++14's `std::move()`.
+template <typename T>
+constexpr absl::remove_reference_t<T>&& move(T&& t) noexcept {
+  return static_cast<absl::remove_reference_t<T>&&>(t);
+}
+
+// forward()
+//
+// A constexpr version of `std::forward()`, designed to be a drop-in replacement
+// for C++14's `std::forward()`.
+template <typename T>
+constexpr T&& forward(
+    absl::remove_reference_t<T>& t) noexcept {  // NOLINT(runtime/references)
+  return static_cast<T&&>(t);
+}
+
+namespace utility_internal {
+// Helper method for expanding tuple into a called method.
+template <typename Functor, typename Tuple, std::size_t... Indexes>
+auto apply_helper(Functor&& functor, Tuple&& t, index_sequence<Indexes...>)
+    -> decltype(absl::base_internal::Invoke(
+        absl::forward<Functor>(functor),
+        std::get<Indexes>(absl::forward<Tuple>(t))...)) {
+  return absl::base_internal::Invoke(
+      absl::forward<Functor>(functor),
+      std::get<Indexes>(absl::forward<Tuple>(t))...);
+}
+
+}  // namespace utility_internal
+
+// apply
+//
+// Invokes a Callable using elements of a tuple as its arguments.
+// Each element of the tuple corresponds to an argument of the call (in order).
+// Both the Callable argument and the tuple argument are perfect-forwarded.
+// For member-function Callables, the first tuple element acts as the `this`
+// pointer. `absl::apply` is designed to be a drop-in replacement for C++17's
+// `std::apply`. Unlike C++17's `std::apply`, this is not currently `constexpr`.
+//
+// Example:
+//
+//   class Foo {
+//    public:
+//     void Bar(int);
+//   };
+//   void user_function1(int, std::string);
+//   void user_function2(std::unique_ptr<Foo>);
+//   auto user_lambda = [](int, int) {};
+//
+//   int main()
+//   {
+//       std::tuple<int, std::string> tuple1(42, "bar");
+//       // Invokes the first user function on int, std::string.
+//       absl::apply(&user_function1, tuple1);
+//
+//       std::tuple<std::unique_ptr<Foo>> tuple2(absl::make_unique<Foo>());
+//       // Invokes the user function that takes ownership of the unique
+//       // pointer.
+//       absl::apply(&user_function2, std::move(tuple2));
+//
+//       auto foo = absl::make_unique<Foo>();
+//       std::tuple<Foo*, int> tuple3(foo.get(), 42);
+//       // Invokes the method Bar on foo with one argument, 42.
+//       absl::apply(&Foo::Bar, tuple3);
+//
+//       std::tuple<int, int> tuple4(8, 9);
+//       // Invokes a lambda.
+//       absl::apply(user_lambda, tuple4);
+//   }
+template <typename Functor, typename Tuple>
+auto apply(Functor&& functor, Tuple&& t)
+    -> decltype(utility_internal::apply_helper(
+        absl::forward<Functor>(functor), absl::forward<Tuple>(t),
+        absl::make_index_sequence<std::tuple_size<
+            typename std::remove_reference<Tuple>::type>::value>{})) {
+  return utility_internal::apply_helper(
+      absl::forward<Functor>(functor), absl::forward<Tuple>(t),
+      absl::make_index_sequence<std::tuple_size<
+          typename std::remove_reference<Tuple>::type>::value>{});
+}
+
+// exchange
+//
+// Replaces the value of `obj` with `new_value` and returns the old value of
+// `obj`.  `absl::exchange` is designed to be a drop-in replacement for C++14's
+// `std::exchange`.
+//
+// Example:
+//
+//   Foo& operator=(Foo&& other) {
+//     ptr1_ = absl::exchange(other.ptr1_, nullptr);
+//     int1_ = absl::exchange(other.int1_, -1);
+//     return *this;
+//   }
+template <typename T, typename U = T>
+T exchange(T& obj, U&& new_value) {
+  T old_value = absl::move(obj);
+  obj = absl::forward<U>(new_value);
+  return old_value;
+}
+
+namespace utility_internal {
+template <typename T, typename Tuple, size_t... I>
+T make_from_tuple_impl(Tuple&& tup, absl::index_sequence<I...>) {
+  return T(std::get<I>(std::forward<Tuple>(tup))...);
+}
+}  // namespace utility_internal
+
+// make_from_tuple
+//
+// Given the template parameter type `T` and a tuple of arguments
+// `std::tuple(arg0, arg1, ..., argN)` constructs an object of type `T` as if by
+// calling `T(arg0, arg1, ..., argN)`.
+//
+// Example:
+//
+//   std::tuple<const char*, size_t> args("hello world", 5);
+//   auto s = absl::make_from_tuple<std::string>(args);
+//   assert(s == "hello");
+//
+template <typename T, typename Tuple>
+constexpr T make_from_tuple(Tuple&& tup) {
+  return utility_internal::make_from_tuple_impl<T>(
+      std::forward<Tuple>(tup),
+      absl::make_index_sequence<
+          std::tuple_size<absl::decay_t<Tuple>>::value>{});
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_UTILITY_UTILITY_H_
diff --git a/ChattingApp 000/Pods/gRPC-C++/LICENSE b/ChattingApp 000/Pods/gRPC-C++/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+
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diff --git a/ChattingApp 000/Pods/gRPC-C++/README.md b/ChattingApp 000/Pods/gRPC-C++/README.md
new file mode 100644
index 0000000..d3eee33
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/README.md	
@@ -0,0 +1,85 @@
+gRPC - An RPC library and framework
+===================================
+
+gRPC is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. gRPC enables client and server applications to communicate transparently, and simplifies the building of connected systems.
+
+<table>
+  <tr>
+    <td><b>Homepage:</b></td>
+    <td><a href="https://grpc.io/">grpc.io</a></td>
+  </tr>
+  <tr>
+    <td><b>Mailing List:</b></td>
+    <td><a href="https://groups.google.com/forum/#!forum/grpc-io">grpc-io@googlegroups.com</a></td>
+  </tr>
+</table>
+
+[![Join the chat at https://gitter.im/grpc/grpc](https://badges.gitter.im/grpc/grpc.svg)](https://gitter.im/grpc/grpc?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+# To start using gRPC
+
+To maximize usability, gRPC supports the standard method for adding dependencies to a user's chosen language (if there is one).
+In most languages, the gRPC runtime comes as a package available in a user's language package manager.
+
+For instructions on how to use the language-specific gRPC runtime for a project, please refer to these documents
+
+ * [C++](src/cpp): follow the instructions under the `src/cpp` directory
+ * [C#](src/csharp): NuGet package `Grpc`
+ * [Dart](https://github.com/grpc/grpc-dart): pub package `grpc`
+ * [Go](https://github.com/grpc/grpc-go): `go get google.golang.org/grpc`
+ * [Java](https://github.com/grpc/grpc-java): Use JARs from Maven Central Repository
+ * [Node](https://github.com/grpc/grpc-node): `npm install grpc`
+ * [Objective-C](src/objective-c): Add `gRPC-ProtoRPC` dependency to podspec
+ * [PHP](src/php): `pecl install grpc`
+ * [Python](src/python/grpcio): `pip install grpcio`
+ * [Ruby](src/ruby): `gem install grpc`
+ * [WebJS](https://github.com/grpc/grpc-web): follow the grpc-web instructions
+
+Per-language quickstart guides and tutorials can be found in the [documentation section on the grpc.io website](https://grpc.io/docs/). Code examples are available in the [examples](examples) directory.
+
+Precompiled bleeding-edge package builds of gRPC `master` branch's `HEAD` are uploaded daily to [packages.grpc.io](https://packages.grpc.io).
+
+# To start developing gRPC
+
+Contributions are welcome!
+
+Please read [How to contribute](CONTRIBUTING.md) which will guide you through the entire workflow of how to build the source code, how to run the tests, and how to contribute changes to
+the gRPC codebase.
+The "How to contribute" document also contains info on how the contribution process works and contains best practices for creating contributions.
+
+# Troubleshooting
+
+Sometimes things go wrong. Please check out the [Troubleshooting guide](TROUBLESHOOTING.md) if you are experiencing issues with gRPC.
+
+# Performance 
+
+See the [Performance dashboard](https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584) for performance numbers of master branch daily builds.
+
+# Concepts
+
+See [gRPC Concepts](CONCEPTS.md)
+
+# About This Repository
+
+This repository contains source code for gRPC libraries implemented in multiple languages written on top of a shared C core library [src/core](src/core).
+
+Libraries in different languages may be in various states of development. We are seeking contributions for all of these libraries:
+
+| Language                | Source                              |
+|-------------------------|-------------------------------------|
+| Shared C [core library] | [src/core](src/core)                |
+| C++                     | [src/cpp](src/cpp)                  |
+| Ruby                    | [src/ruby](src/ruby)                |
+| Python                  | [src/python](src/python)            |
+| PHP                     | [src/php](src/php)                  |
+| C# (core library based) | [src/csharp](src/csharp)            |
+| Objective-C             | [src/objective-c](src/objective-c)  |
+
+| Language                | Source repo                                          |
+|-------------------------|------------------------------------------------------|
+| Java                    | [grpc-java](https://github.com/grpc/grpc-java)        |
+| Go                      | [grpc-go](https://github.com/grpc/grpc-go)            |
+| NodeJS                  | [grpc-node](https://github.com/grpc/grpc-node)       |
+| WebJS                   | [grpc-web](https://github.com/grpc/grpc-web)         |
+| Dart                    | [grpc-dart](https://github.com/grpc/grpc-dart)       |
+| .NET (pure C# impl.)    | [grpc-dotnet](https://github.com/grpc/grpc-dotnet)   |
diff --git a/ChattingApp 000/Pods/gRPC-C++/etc/roots.pem b/ChattingApp 000/Pods/gRPC-C++/etc/roots.pem
new file mode 100644
index 0000000..0b38474
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/etc/roots.pem	
@@ -0,0 +1,4644 @@
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+# Issuer: CN=Baltimore CyberTrust Root O=Baltimore OU=CyberTrust
+# Subject: CN=Baltimore CyberTrust Root O=Baltimore OU=CyberTrust
+# Label: "Baltimore CyberTrust Root"
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+# Issuer: CN=AddTrust External CA Root O=AddTrust AB OU=AddTrust External TTP Network
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+# Label: "AddTrust External Root"
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+# Issuer: CN=Entrust Root Certification Authority O=Entrust, Inc. OU=www.entrust.net/CPS is incorporated by reference/(c) 2006 Entrust, Inc.
+# Subject: CN=Entrust Root Certification Authority O=Entrust, Inc. OU=www.entrust.net/CPS is incorporated by reference/(c) 2006 Entrust, Inc.
+# Label: "Entrust Root Certification Authority"
+# Serial: 1164660820
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=GeoTrust Global CA O=GeoTrust Inc.
+# Subject: CN=GeoTrust Global CA O=GeoTrust Inc.
+# Label: "GeoTrust Global CA"
+# Serial: 144470
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=GeoTrust Universal CA O=GeoTrust Inc.
+# Subject: CN=GeoTrust Universal CA O=GeoTrust Inc.
+# Label: "GeoTrust Universal CA"
+# Serial: 1
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GeoTrust Universal CA 2 O=GeoTrust Inc.
+# Subject: CN=GeoTrust Universal CA 2 O=GeoTrust Inc.
+# Label: "GeoTrust Universal CA 2"
+# Serial: 1
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=AAA Certificate Services O=Comodo CA Limited
+# Subject: CN=AAA Certificate Services O=Comodo CA Limited
+# Label: "Comodo AAA Services root"
+# Serial: 1
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=QuoVadis Root Certification Authority O=QuoVadis Limited OU=Root Certification Authority
+# Subject: CN=QuoVadis Root Certification Authority O=QuoVadis Limited OU=Root Certification Authority
+# Label: "QuoVadis Root CA"
+# Serial: 985026699
+# MD5 Fingerprint: 27:de:36:fe:72:b7:00:03:00:9d:f4:f0:1e:6c:04:24
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=QuoVadis Root CA 2 O=QuoVadis Limited
+# Subject: CN=QuoVadis Root CA 2 O=QuoVadis Limited
+# Label: "QuoVadis Root CA 2"
+# Serial: 1289
+# MD5 Fingerprint: 5e:39:7b:dd:f8:ba:ec:82:e9:ac:62:ba:0c:54:00:2b
+# SHA1 Fingerprint: ca:3a:fb:cf:12:40:36:4b:44:b2:16:20:88:80:48:39:19:93:7c:f7
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=QuoVadis Root CA 3 O=QuoVadis Limited
+# Subject: CN=QuoVadis Root CA 3 O=QuoVadis Limited
+# Label: "QuoVadis Root CA 3"
+# Serial: 1478
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+-----BEGIN CERTIFICATE-----
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+# Issuer: O=SECOM Trust.net OU=Security Communication RootCA1
+# Subject: O=SECOM Trust.net OU=Security Communication RootCA1
+# Label: "Security Communication Root CA"
+# Serial: 0
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Sonera Class2 CA O=Sonera
+# Subject: CN=Sonera Class2 CA O=Sonera
+# Label: "Sonera Class 2 Root CA"
+# Serial: 29
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=XRamp Global Certification Authority O=XRamp Security Services Inc OU=www.xrampsecurity.com
+# Subject: CN=XRamp Global Certification Authority O=XRamp Security Services Inc OU=www.xrampsecurity.com
+# Label: "XRamp Global CA Root"
+# Serial: 107108908803651509692980124233745014957
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: O=The Go Daddy Group, Inc. OU=Go Daddy Class 2 Certification Authority
+# Subject: O=The Go Daddy Group, Inc. OU=Go Daddy Class 2 Certification Authority
+# Label: "Go Daddy Class 2 CA"
+# Serial: 0
+# MD5 Fingerprint: 91:de:06:25:ab:da:fd:32:17:0c:bb:25:17:2a:84:67
+# SHA1 Fingerprint: 27:96:ba:e6:3f:18:01:e2:77:26:1b:a0:d7:77:70:02:8f:20:ee:e4
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: O=Starfield Technologies, Inc. OU=Starfield Class 2 Certification Authority
+# Subject: O=Starfield Technologies, Inc. OU=Starfield Class 2 Certification Authority
+# Label: "Starfield Class 2 CA"
+# Serial: 0
+# MD5 Fingerprint: 32:4a:4b:bb:c8:63:69:9b:be:74:9a:c6:dd:1d:46:24
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: O=Government Root Certification Authority
+# Subject: O=Government Root Certification Authority
+# Label: "Taiwan GRCA"
+# Serial: 42023070807708724159991140556527066870
+# MD5 Fingerprint: 37:85:44:53:32:45:1f:20:f0:f3:95:e1:25:c4:43:4e
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Assured ID Root CA O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Assured ID Root CA O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Assured ID Root CA"
+# Serial: 17154717934120587862167794914071425081
+# MD5 Fingerprint: 87:ce:0b:7b:2a:0e:49:00:e1:58:71:9b:37:a8:93:72
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Global Root CA O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Global Root CA O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Global Root CA"
+# Serial: 10944719598952040374951832963794454346
+# MD5 Fingerprint: 79:e4:a9:84:0d:7d:3a:96:d7:c0:4f:e2:43:4c:89:2e
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert High Assurance EV Root CA O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert High Assurance EV Root CA O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert High Assurance EV Root CA"
+# Serial: 3553400076410547919724730734378100087
+# MD5 Fingerprint: d4:74:de:57:5c:39:b2:d3:9c:85:83:c5:c0:65:49:8a
+# SHA1 Fingerprint: 5f:b7:ee:06:33:e2:59:db:ad:0c:4c:9a:e6:d3:8f:1a:61:c7:dc:25
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DST Root CA X3 O=Digital Signature Trust Co.
+# Subject: CN=DST Root CA X3 O=Digital Signature Trust Co.
+# Label: "DST Root CA X3"
+# Serial: 91299735575339953335919266965803778155
+# MD5 Fingerprint: 41:03:52:dc:0f:f7:50:1b:16:f0:02:8e:ba:6f:45:c5
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SwissSign Gold CA - G2 O=SwissSign AG
+# Subject: CN=SwissSign Gold CA - G2 O=SwissSign AG
+# Label: "SwissSign Gold CA - G2"
+# Serial: 13492815561806991280
+# MD5 Fingerprint: 24:77:d9:a8:91:d1:3b:fa:88:2d:c2:ff:f8:cd:33:93
+# SHA1 Fingerprint: d8:c5:38:8a:b7:30:1b:1b:6e:d4:7a:e6:45:25:3a:6f:9f:1a:27:61
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SwissSign Silver CA - G2 O=SwissSign AG
+# Subject: CN=SwissSign Silver CA - G2 O=SwissSign AG
+# Label: "SwissSign Silver CA - G2"
+# Serial: 5700383053117599563
+# MD5 Fingerprint: e0:06:a1:c9:7d:cf:c9:fc:0d:c0:56:75:96:d8:62:13
+# SHA1 Fingerprint: 9b:aa:e5:9f:56:ee:21:cb:43:5a:be:25:93:df:a7:f0:40:d1:1d:cb
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=GeoTrust Primary Certification Authority O=GeoTrust Inc.
+# Subject: CN=GeoTrust Primary Certification Authority O=GeoTrust Inc.
+# Label: "GeoTrust Primary Certification Authority"
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+# Subject: CN=thawte Primary Root CA O=thawte, Inc. OU=Certification Services Division/(c) 2006 thawte, Inc. - For authorized use only
+# Label: "thawte Primary Root CA"
+# Serial: 69529181992039203566298953787712940909
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G5 O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2006 VeriSign, Inc. - For authorized use only
+# Subject: CN=VeriSign Class 3 Public Primary Certification Authority - G5 O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2006 VeriSign, Inc. - For authorized use only
+# Label: "VeriSign Class 3 Public Primary Certification Authority - G5"
+# Serial: 33037644167568058970164719475676101450
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SecureTrust CA O=SecureTrust Corporation
+# Subject: CN=SecureTrust CA O=SecureTrust Corporation
+# Label: "SecureTrust CA"
+# Serial: 17199774589125277788362757014266862032
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Secure Global CA O=SecureTrust Corporation
+# Subject: CN=Secure Global CA O=SecureTrust Corporation
+# Label: "Secure Global CA"
+# Serial: 9751836167731051554232119481456978597
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=COMODO Certification Authority O=COMODO CA Limited
+# Subject: CN=COMODO Certification Authority O=COMODO CA Limited
+# Label: "COMODO Certification Authority"
+# Serial: 104350513648249232941998508985834464573
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Network Solutions Certificate Authority O=Network Solutions L.L.C.
+# Subject: CN=Network Solutions Certificate Authority O=Network Solutions L.L.C.
+# Label: "Network Solutions Certificate Authority"
+# Serial: 116697915152937497490437556386812487904
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
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+# Issuer: CN=COMODO ECC Certification Authority O=COMODO CA Limited
+# Subject: CN=COMODO ECC Certification Authority O=COMODO CA Limited
+# Label: "COMODO ECC Certification Authority"
+# Serial: 41578283867086692638256921589707938090
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=OISTE WISeKey Global Root GA CA O=WISeKey OU=Copyright (c) 2005/OISTE Foundation Endorsed
+# Subject: CN=OISTE WISeKey Global Root GA CA O=WISeKey OU=Copyright (c) 2005/OISTE Foundation Endorsed
+# Label: "OISTE WISeKey Global Root GA CA"
+# Serial: 86718877871133159090080555911823548314
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Certigna O=Dhimyotis
+# Subject: CN=Certigna O=Dhimyotis
+# Label: "Certigna"
+# Serial: 18364802974209362175
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Cybertrust Global Root O=Cybertrust, Inc
+# Subject: CN=Cybertrust Global Root O=Cybertrust, Inc
+# Label: "Cybertrust Global Root"
+# Serial: 4835703278459682877484360
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: O=Chunghwa Telecom Co., Ltd. OU=ePKI Root Certification Authority
+# Subject: O=Chunghwa Telecom Co., Ltd. OU=ePKI Root Certification Authority
+# Label: "ePKI Root Certification Authority"
+# Serial: 28956088682735189655030529057352760477
+# MD5 Fingerprint: 1b:2e:00:ca:26:06:90:3d:ad:fe:6f:15:68:d3:6b:b3
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+-----BEGIN CERTIFICATE-----
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+# Issuer: O=certSIGN OU=certSIGN ROOT CA
+# Subject: O=certSIGN OU=certSIGN ROOT CA
+# Label: "certSIGN ROOT CA"
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+# Issuer: CN=GeoTrust Primary Certification Authority - G3 O=GeoTrust Inc. OU=(c) 2008 GeoTrust Inc. - For authorized use only
+# Subject: CN=GeoTrust Primary Certification Authority - G3 O=GeoTrust Inc. OU=(c) 2008 GeoTrust Inc. - For authorized use only
+# Label: "GeoTrust Primary Certification Authority - G3"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=thawte Primary Root CA - G2 O=thawte, Inc. OU=(c) 2007 thawte, Inc. - For authorized use only
+# Subject: CN=thawte Primary Root CA - G2 O=thawte, Inc. OU=(c) 2007 thawte, Inc. - For authorized use only
+# Label: "thawte Primary Root CA - G2"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=thawte Primary Root CA - G3 O=thawte, Inc. OU=Certification Services Division/(c) 2008 thawte, Inc. - For authorized use only
+# Subject: CN=thawte Primary Root CA - G3 O=thawte, Inc. OU=Certification Services Division/(c) 2008 thawte, Inc. - For authorized use only
+# Label: "thawte Primary Root CA - G3"
+# Serial: 127614157056681299805556476275995414779
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=GeoTrust Primary Certification Authority - G2 O=GeoTrust Inc. OU=(c) 2007 GeoTrust Inc. - For authorized use only
+# Subject: CN=GeoTrust Primary Certification Authority - G2 O=GeoTrust Inc. OU=(c) 2007 GeoTrust Inc. - For authorized use only
+# Label: "GeoTrust Primary Certification Authority - G2"
+# Serial: 80682863203381065782177908751794619243
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=VeriSign Universal Root Certification Authority O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2008 VeriSign, Inc. - For authorized use only
+# Subject: CN=VeriSign Universal Root Certification Authority O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2008 VeriSign, Inc. - For authorized use only
+# Label: "VeriSign Universal Root Certification Authority"
+# Serial: 85209574734084581917763752644031726877
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=VeriSign Class 3 Public Primary Certification Authority - G4 O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2007 VeriSign, Inc. - For authorized use only
+# Subject: CN=VeriSign Class 3 Public Primary Certification Authority - G4 O=VeriSign, Inc. OU=VeriSign Trust Network/(c) 2007 VeriSign, Inc. - For authorized use only
+# Label: "VeriSign Class 3 Public Primary Certification Authority - G4"
+# Serial: 63143484348153506665311985501458640051
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=NetLock Arany (Class Gold) Főtanúsítvány O=NetLock Kft. OU=Tanúsítványkiadók (Certification Services)
+# Subject: CN=NetLock Arany (Class Gold) Főtanúsítvány O=NetLock Kft. OU=Tanúsítványkiadók (Certification Services)
+# Label: "NetLock Arany (Class Gold) Főtanúsítvány"
+# Serial: 80544274841616
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Staat der Nederlanden Root CA - G2 O=Staat der Nederlanden
+# Subject: CN=Staat der Nederlanden Root CA - G2 O=Staat der Nederlanden
+# Label: "Staat der Nederlanden Root CA - G2"
+# Serial: 10000012
+# MD5 Fingerprint: 7c:a5:0f:f8:5b:9a:7d:6d:30:ae:54:5a:e3:42:a2:8a
+# SHA1 Fingerprint: 59:af:82:79:91:86:c7:b4:75:07:cb:cf:03:57:46:eb:04:dd:b7:16
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Hongkong Post Root CA 1 O=Hongkong Post
+# Subject: CN=Hongkong Post Root CA 1 O=Hongkong Post
+# Label: "Hongkong Post Root CA 1"
+# Serial: 1000
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SecureSign RootCA11 O=Japan Certification Services, Inc.
+# Subject: CN=SecureSign RootCA11 O=Japan Certification Services, Inc.
+# Label: "SecureSign RootCA11"
+# Serial: 1
+# MD5 Fingerprint: b7:52:74:e2:92:b4:80:93:f2:75:e4:cc:d7:f2:ea:26
+# SHA1 Fingerprint: 3b:c4:9f:48:f8:f3:73:a0:9c:1e:bd:f8:5b:b1:c3:65:c7:d8:11:b3
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Microsec e-Szigno Root CA 2009 O=Microsec Ltd.
+# Subject: CN=Microsec e-Szigno Root CA 2009 O=Microsec Ltd.
+# Label: "Microsec e-Szigno Root CA 2009"
+# Serial: 14014712776195784473
+# MD5 Fingerprint: f8:49:f4:03:bc:44:2d:83:be:48:69:7d:29:64:fc:b1
+# SHA1 Fingerprint: 89:df:74:fe:5c:f4:0f:4a:80:f9:e3:37:7d:54:da:91:e1:01:31:8e
+# SHA256 Fingerprint: 3c:5f:81:fe:a5:fa:b8:2c:64:bf:a2:ea:ec:af:cd:e8:e0:77:fc:86:20:a7:ca:e5:37:16:3d:f3:6e:db:f3:78
+-----BEGIN CERTIFICATE-----
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+# Label: "GlobalSign Root CA - R3"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Autoridad de Certificacion Firmaprofesional CIF A62634068
+# Subject: CN=Autoridad de Certificacion Firmaprofesional CIF A62634068
+# Label: "Autoridad de Certificacion Firmaprofesional CIF A62634068"
+# Serial: 6047274297262753887
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Izenpe.com O=IZENPE S.A.
+# Subject: CN=Izenpe.com O=IZENPE S.A.
+# Label: "Izenpe.com"
+# Serial: 917563065490389241595536686991402621
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Chambers of Commerce Root - 2008 O=AC Camerfirma S.A.
+# Subject: CN=Chambers of Commerce Root - 2008 O=AC Camerfirma S.A.
+# Label: "Chambers of Commerce Root - 2008"
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+-----BEGIN CERTIFICATE-----
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+# Label: "Global Chambersign Root - 2008"
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+# Label: "Go Daddy Root Certificate Authority - G2"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Starfield Root Certificate Authority - G2 O=Starfield Technologies, Inc.
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+# Label: "Starfield Root Certificate Authority - G2"
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+-----BEGIN CERTIFICATE-----
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+# Label: "Starfield Services Root Certificate Authority - G2"
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+-----BEGIN CERTIFICATE-----
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+# Label: "AffirmTrust Commercial"
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+-----BEGIN CERTIFICATE-----
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+# Label: "AffirmTrust Premium"
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+# Issuer: CN=AffirmTrust Premium ECC O=AffirmTrust
+# Subject: CN=AffirmTrust Premium ECC O=AffirmTrust
+# Label: "AffirmTrust Premium ECC"
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+-----BEGIN CERTIFICATE-----
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+# Subject: CN=Certum Trusted Network CA O=Unizeto Technologies S.A. OU=Certum Certification Authority
+# Label: "Certum Trusted Network CA"
+# Serial: 279744
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=TWCA Root Certification Authority O=TAIWAN-CA OU=Root CA
+# Subject: CN=TWCA Root Certification Authority O=TAIWAN-CA OU=Root CA
+# Label: "TWCA Root Certification Authority"
+# Serial: 1
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
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+# Issuer: O=SECOM Trust Systems CO.,LTD. OU=Security Communication RootCA2
+# Subject: O=SECOM Trust Systems CO.,LTD. OU=Security Communication RootCA2
+# Label: "Security Communication RootCA2"
+# Serial: 0
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+-----BEGIN CERTIFICATE-----
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+# Label: "EC-ACC"
+# Serial: -23701579247955709139626555126524820479
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+-----BEGIN CERTIFICATE-----
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+# Label: "Hellenic Academic and Research Institutions RootCA 2011"
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+-----BEGIN CERTIFICATE-----
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+# Label: "Actalis Authentication Root CA"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: O=Trustis Limited OU=Trustis FPS Root CA
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+# Label: "Trustis FPS Root CA"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Buypass Class 2 Root CA O=Buypass AS-983163327
+# Subject: CN=Buypass Class 2 Root CA O=Buypass AS-983163327
+# Label: "Buypass Class 2 Root CA"
+# Serial: 2
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+# Issuer: CN=Buypass Class 3 Root CA O=Buypass AS-983163327
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+# Label: "Buypass Class 3 Root CA"
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=T-TeleSec GlobalRoot Class 3 O=T-Systems Enterprise Services GmbH OU=T-Systems Trust Center
+# Subject: CN=T-TeleSec GlobalRoot Class 3 O=T-Systems Enterprise Services GmbH OU=T-Systems Trust Center
+# Label: "T-TeleSec GlobalRoot Class 3"
+# Serial: 1
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=EE Certification Centre Root CA O=AS Sertifitseerimiskeskus
+# Subject: CN=EE Certification Centre Root CA O=AS Sertifitseerimiskeskus
+# Label: "EE Certification Centre Root CA"
+# Serial: 112324828676200291871926431888494945866
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=D-TRUST Root Class 3 CA 2 2009 O=D-Trust GmbH
+# Subject: CN=D-TRUST Root Class 3 CA 2 2009 O=D-Trust GmbH
+# Label: "D-TRUST Root Class 3 CA 2 2009"
+# Serial: 623603
+# MD5 Fingerprint: cd:e0:25:69:8d:47:ac:9c:89:35:90:f7:fd:51:3d:2f
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=D-TRUST Root Class 3 CA 2 EV 2009 O=D-Trust GmbH
+# Subject: CN=D-TRUST Root Class 3 CA 2 EV 2009 O=D-Trust GmbH
+# Label: "D-TRUST Root Class 3 CA 2 EV 2009"
+# Serial: 623604
+# MD5 Fingerprint: aa:c6:43:2c:5e:2d:cd:c4:34:c0:50:4f:11:02:4f:b6
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=CA Disig Root R2 O=Disig a.s.
+# Subject: CN=CA Disig Root R2 O=Disig a.s.
+# Label: "CA Disig Root R2"
+# Serial: 10572350602393338211
+# MD5 Fingerprint: 26:01:fb:d8:27:a7:17:9a:45:54:38:1a:43:01:3b:03
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=ACCVRAIZ1 O=ACCV OU=PKIACCV
+# Subject: CN=ACCVRAIZ1 O=ACCV OU=PKIACCV
+# Label: "ACCVRAIZ1"
+# Serial: 6828503384748696800
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=TWCA Global Root CA O=TAIWAN-CA OU=Root CA
+# Subject: CN=TWCA Global Root CA O=TAIWAN-CA OU=Root CA
+# Label: "TWCA Global Root CA"
+# Serial: 3262
+# MD5 Fingerprint: f9:03:7e:cf:e6:9e:3c:73:7a:2a:90:07:69:ff:2b:96
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=TeliaSonera Root CA v1 O=TeliaSonera
+# Subject: CN=TeliaSonera Root CA v1 O=TeliaSonera
+# Label: "TeliaSonera Root CA v1"
+# Serial: 199041966741090107964904287217786801558
+# MD5 Fingerprint: 37:41:49:1b:18:56:9a:26:f5:ad:c2:66:fb:40:a5:4c
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=E-Tugra Certification Authority O=E-Tuğra EBG Bilişim Teknolojileri ve Hizmetleri A.Ş. OU=E-Tugra Sertifikasyon Merkezi
+# Subject: CN=E-Tugra Certification Authority O=E-Tuğra EBG Bilişim Teknolojileri ve Hizmetleri A.Ş. OU=E-Tugra Sertifikasyon Merkezi
+# Label: "E-Tugra Certification Authority"
+# Serial: 7667447206703254355
+# MD5 Fingerprint: b8:a1:03:63:b0:bd:21:71:70:8a:6f:13:3a:bb:79:49
+# SHA1 Fingerprint: 51:c6:e7:08:49:06:6e:f3:92:d4:5c:a0:0d:6d:a3:62:8f:c3:52:39
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=T-TeleSec GlobalRoot Class 2 O=T-Systems Enterprise Services GmbH OU=T-Systems Trust Center
+# Subject: CN=T-TeleSec GlobalRoot Class 2 O=T-Systems Enterprise Services GmbH OU=T-Systems Trust Center
+# Label: "T-TeleSec GlobalRoot Class 2"
+# Serial: 1
+# MD5 Fingerprint: 2b:9b:9e:e4:7b:6c:1f:00:72:1a:cc:c1:77:79:df:6a
+# SHA1 Fingerprint: 59:0d:2d:7d:88:4f:40:2e:61:7e:a5:62:32:17:65:cf:17:d8:94:e9
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Atos TrustedRoot 2011 O=Atos
+# Subject: CN=Atos TrustedRoot 2011 O=Atos
+# Label: "Atos TrustedRoot 2011"
+# Serial: 6643877497813316402
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=QuoVadis Root CA 1 G3 O=QuoVadis Limited
+# Subject: CN=QuoVadis Root CA 1 G3 O=QuoVadis Limited
+# Label: "QuoVadis Root CA 1 G3"
+# Serial: 687049649626669250736271037606554624078720034195
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=QuoVadis Root CA 2 G3 O=QuoVadis Limited
+# Subject: CN=QuoVadis Root CA 2 G3 O=QuoVadis Limited
+# Label: "QuoVadis Root CA 2 G3"
+# Serial: 390156079458959257446133169266079962026824725800
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=QuoVadis Root CA 3 G3 O=QuoVadis Limited
+# Subject: CN=QuoVadis Root CA 3 G3 O=QuoVadis Limited
+# Label: "QuoVadis Root CA 3 G3"
+# Serial: 268090761170461462463995952157327242137089239581
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Assured ID Root G2 O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Assured ID Root G2 O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Assured ID Root G2"
+# Serial: 15385348160840213938643033620894905419
+# MD5 Fingerprint: 92:38:b9:f8:63:24:82:65:2c:57:33:e6:fe:81:8f:9d
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Assured ID Root G3 O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Assured ID Root G3 O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Assured ID Root G3"
+# Serial: 15459312981008553731928384953135426796
+# MD5 Fingerprint: 7c:7f:65:31:0c:81:df:8d:ba:3e:99:e2:5c:ad:6e:fb
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Global Root G2 O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Global Root G2 O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Global Root G2"
+# Serial: 4293743540046975378534879503202253541
+# MD5 Fingerprint: e4:a6:8a:c8:54:ac:52:42:46:0a:fd:72:48:1b:2a:44
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=DigiCert Global Root G3 O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Global Root G3 O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Global Root G3"
+# Serial: 7089244469030293291760083333884364146
+# MD5 Fingerprint: f5:5d:a4:50:a5:fb:28:7e:1e:0f:0d:cc:96:57:56:ca
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=DigiCert Trusted Root G4 O=DigiCert Inc OU=www.digicert.com
+# Subject: CN=DigiCert Trusted Root G4 O=DigiCert Inc OU=www.digicert.com
+# Label: "DigiCert Trusted Root G4"
+# Serial: 7451500558977370777930084869016614236
+# MD5 Fingerprint: 78:f2:fc:aa:60:1f:2f:b4:eb:c9:37:ba:53:2e:75:49
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=COMODO RSA Certification Authority O=COMODO CA Limited
+# Subject: CN=COMODO RSA Certification Authority O=COMODO CA Limited
+# Label: "COMODO RSA Certification Authority"
+# Serial: 101909084537582093308941363524873193117
+# MD5 Fingerprint: 1b:31:b0:71:40:36:cc:14:36:91:ad:c4:3e:fd:ec:18
+# SHA1 Fingerprint: af:e5:d2:44:a8:d1:19:42:30:ff:47:9f:e2:f8:97:bb:cd:7a:8c:b4
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=USERTrust RSA Certification Authority O=The USERTRUST Network
+# Subject: CN=USERTrust RSA Certification Authority O=The USERTRUST Network
+# Label: "USERTrust RSA Certification Authority"
+# Serial: 2645093764781058787591871645665788717
+# MD5 Fingerprint: 1b:fe:69:d1:91:b7:19:33:a3:72:a8:0f:e1:55:e5:b5
+# SHA1 Fingerprint: 2b:8f:1b:57:33:0d:bb:a2:d0:7a:6c:51:f7:0e:e9:0d:da:b9:ad:8e
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=USERTrust ECC Certification Authority O=The USERTRUST Network
+# Subject: CN=USERTrust ECC Certification Authority O=The USERTRUST Network
+# Label: "USERTrust ECC Certification Authority"
+# Serial: 123013823720199481456569720443997572134
+# MD5 Fingerprint: fa:68:bc:d9:b5:7f:ad:fd:c9:1d:06:83:28:cc:24:c1
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=GlobalSign O=GlobalSign OU=GlobalSign ECC Root CA - R4
+# Subject: CN=GlobalSign O=GlobalSign OU=GlobalSign ECC Root CA - R4
+# Label: "GlobalSign ECC Root CA - R4"
+# Serial: 14367148294922964480859022125800977897474
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GlobalSign O=GlobalSign OU=GlobalSign ECC Root CA - R5
+# Subject: CN=GlobalSign O=GlobalSign OU=GlobalSign ECC Root CA - R5
+# Label: "GlobalSign ECC Root CA - R5"
+# Serial: 32785792099990507226680698011560947931244
+# MD5 Fingerprint: 9f:ad:3b:1c:02:1e:8a:ba:17:74:38:81:0c:a2:bc:08
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Staat der Nederlanden Root CA - G3 O=Staat der Nederlanden
+# Subject: CN=Staat der Nederlanden Root CA - G3 O=Staat der Nederlanden
+# Label: "Staat der Nederlanden Root CA - G3"
+# Serial: 10003001
+# MD5 Fingerprint: 0b:46:67:07:db:10:2f:19:8c:35:50:60:d1:0b:f4:37
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Staat der Nederlanden EV Root CA O=Staat der Nederlanden
+# Subject: CN=Staat der Nederlanden EV Root CA O=Staat der Nederlanden
+# Label: "Staat der Nederlanden EV Root CA"
+# Serial: 10000013
+# MD5 Fingerprint: fc:06:af:7b:e8:1a:f1:9a:b4:e8:d2:70:1f:c0:f5:ba
+# SHA1 Fingerprint: 76:e2:7e:c1:4f:db:82:c1:c0:a6:75:b5:05:be:3d:29:b4:ed:db:bb
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=IdenTrust Commercial Root CA 1 O=IdenTrust
+# Subject: CN=IdenTrust Commercial Root CA 1 O=IdenTrust
+# Label: "IdenTrust Commercial Root CA 1"
+# Serial: 13298821034946342390520003877796839426
+# MD5 Fingerprint: b3:3e:77:73:75:ee:a0:d3:e3:7e:49:63:49:59:bb:c7
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=IdenTrust Public Sector Root CA 1 O=IdenTrust
+# Subject: CN=IdenTrust Public Sector Root CA 1 O=IdenTrust
+# Label: "IdenTrust Public Sector Root CA 1"
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+# Issuer: CN=Entrust Root Certification Authority - G2 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2009 Entrust, Inc. - for authorized use only
+# Subject: CN=Entrust Root Certification Authority - G2 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2009 Entrust, Inc. - for authorized use only
+# Label: "Entrust Root Certification Authority - G2"
+# Serial: 1246989352
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Entrust Root Certification Authority - EC1 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2012 Entrust, Inc. - for authorized use only
+# Subject: CN=Entrust Root Certification Authority - EC1 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2012 Entrust, Inc. - for authorized use only
+# Label: "Entrust Root Certification Authority - EC1"
+# Serial: 51543124481930649114116133369
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=CFCA EV ROOT O=China Financial Certification Authority
+# Subject: CN=CFCA EV ROOT O=China Financial Certification Authority
+# Label: "CFCA EV ROOT"
+# Serial: 407555286
+# MD5 Fingerprint: 74:e1:b6:ed:26:7a:7a:44:30:33:94:ab:7b:27:81:30
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=OISTE WISeKey Global Root GB CA O=WISeKey OU=OISTE Foundation Endorsed
+# Subject: CN=OISTE WISeKey Global Root GB CA O=WISeKey OU=OISTE Foundation Endorsed
+# Label: "OISTE WISeKey Global Root GB CA"
+# Serial: 157768595616588414422159278966750757568
+# MD5 Fingerprint: a4:eb:b9:61:28:2e:b7:2f:98:b0:35:26:90:99:51:1d
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SZAFIR ROOT CA2 O=Krajowa Izba Rozliczeniowa S.A.
+# Subject: CN=SZAFIR ROOT CA2 O=Krajowa Izba Rozliczeniowa S.A.
+# Label: "SZAFIR ROOT CA2"
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+# Label: "Certum Trusted Network CA 2"
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+# Issuer: CN=Hellenic Academic and Research Institutions RootCA 2015 O=Hellenic Academic and Research Institutions Cert. Authority
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+# Label: "Hellenic Academic and Research Institutions RootCA 2015"
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+# Issuer: CN=Hellenic Academic and Research Institutions ECC RootCA 2015 O=Hellenic Academic and Research Institutions Cert. Authority
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+# Label: "Hellenic Academic and Research Institutions ECC RootCA 2015"
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+# Label: "ISRG Root X1"
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Amazon Root CA 1 O=Amazon
+# Subject: CN=Amazon Root CA 1 O=Amazon
+# Label: "Amazon Root CA 1"
+# Serial: 143266978916655856878034712317230054538369994
+# MD5 Fingerprint: 43:c6:bf:ae:ec:fe:ad:2f:18:c6:88:68:30:fc:c8:e6
+# SHA1 Fingerprint: 8d:a7:f9:65:ec:5e:fc:37:91:0f:1c:6e:59:fd:c1:cc:6a:6e:de:16
+# SHA256 Fingerprint: 8e:cd:e6:88:4f:3d:87:b1:12:5b:a3:1a:c3:fc:b1:3d:70:16:de:7f:57:cc:90:4f:e1:cb:97:c6:ae:98:19:6e
+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=Amazon Root CA 2 O=Amazon
+# Subject: CN=Amazon Root CA 2 O=Amazon
+# Label: "Amazon Root CA 2"
+# Serial: 143266982885963551818349160658925006970653239
+# MD5 Fingerprint: c8:e5:8d:ce:a8:42:e2:7a:c0:2a:5c:7c:9e:26:bf:66
+# SHA1 Fingerprint: 5a:8c:ef:45:d7:a6:98:59:76:7a:8c:8b:44:96:b5:78:cf:47:4b:1a
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Amazon Root CA 3 O=Amazon
+# Subject: CN=Amazon Root CA 3 O=Amazon
+# Label: "Amazon Root CA 3"
+# Serial: 143266986699090766294700635381230934788665930
+# MD5 Fingerprint: a0:d4:ef:0b:f7:b5:d8:49:95:2a:ec:f5:c4:fc:81:87
+# SHA1 Fingerprint: 0d:44:dd:8c:3c:8c:1a:1a:58:75:64:81:e9:0f:2e:2a:ff:b3:d2:6e
+# SHA256 Fingerprint: 18:ce:6c:fe:7b:f1:4e:60:b2:e3:47:b8:df:e8:68:cb:31:d0:2e:bb:3a:da:27:15:69:f5:03:43:b4:6d:b3:a4
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Amazon Root CA 4 O=Amazon
+# Subject: CN=Amazon Root CA 4 O=Amazon
+# Label: "Amazon Root CA 4"
+# Serial: 143266989758080763974105200630763877849284878
+# MD5 Fingerprint: 89:bc:27:d5:eb:17:8d:06:6a:69:d5:fd:89:47:b4:cd
+# SHA1 Fingerprint: f6:10:84:07:d6:f8:bb:67:98:0c:c2:e2:44:c2:eb:ae:1c:ef:63:be
+# SHA256 Fingerprint: e3:5d:28:41:9e:d0:20:25:cf:a6:90:38:cd:62:39:62:45:8d:a5:c6:95:fb:de:a3:c2:2b:0b:fb:25:89:70:92
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=LuxTrust Global Root 2 O=LuxTrust S.A.
+# Subject: CN=LuxTrust Global Root 2 O=LuxTrust S.A.
+# Label: "LuxTrust Global Root 2"
+# Serial: 59914338225734147123941058376788110305822489521
+# MD5 Fingerprint: b2:e1:09:00:61:af:f7:f1:91:6f:c4:ad:8d:5e:3b:7c
+# SHA1 Fingerprint: 1e:0e:56:19:0a:d1:8b:25:98:b2:04:44:ff:66:8a:04:17:99:5f:3f
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 O=Turkiye Bilimsel ve Teknolojik Arastirma Kurumu - TUBITAK OU=Kamu Sertifikasyon Merkezi - Kamu SM
+# Subject: CN=TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 O=Turkiye Bilimsel ve Teknolojik Arastirma Kurumu - TUBITAK OU=Kamu Sertifikasyon Merkezi - Kamu SM
+# Label: "TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1"
+# Serial: 1
+# MD5 Fingerprint: dc:00:81:dc:69:2f:3e:2f:b0:3b:f6:3d:5a:91:8e:49
+# SHA1 Fingerprint: 31:43:64:9b:ec:ce:27:ec:ed:3a:3f:0b:8f:0d:e4:e8:91:dd:ee:ca
+# SHA256 Fingerprint: 46:ed:c3:68:90:46:d5:3a:45:3f:b3:10:4a:b8:0d:ca:ec:65:8b:26:60:ea:16:29:dd:7e:86:79:90:64:87:16
+-----BEGIN CERTIFICATE-----
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+# Label: "GDCA TrustAUTH R5 ROOT"
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+# Label: "TrustCor RootCert CA-1"
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+-----BEGIN CERTIFICATE-----
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+# Label: "TrustCor RootCert CA-2"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=TrustCor ECA-1 O=TrustCor Systems S. de R.L. OU=TrustCor Certificate Authority
+# Subject: CN=TrustCor ECA-1 O=TrustCor Systems S. de R.L. OU=TrustCor Certificate Authority
+# Label: "TrustCor ECA-1"
+# Serial: 9548242946988625984
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=SSL.com Root Certification Authority RSA O=SSL Corporation
+# Subject: CN=SSL.com Root Certification Authority RSA O=SSL Corporation
+# Label: "SSL.com Root Certification Authority RSA"
+# Serial: 8875640296558310041
+# MD5 Fingerprint: 86:69:12:c0:70:f1:ec:ac:ac:c2:d5:bc:a5:5b:a1:29
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SSL.com Root Certification Authority ECC O=SSL Corporation
+# Subject: CN=SSL.com Root Certification Authority ECC O=SSL Corporation
+# Label: "SSL.com Root Certification Authority ECC"
+# Serial: 8495723813297216424
+# MD5 Fingerprint: 2e:da:e4:39:7f:9c:8f:37:d1:70:9f:26:17:51:3a:8e
+# SHA1 Fingerprint: c3:19:7c:39:24:e6:54:af:1b:c4:ab:20:95:7a:e2:c3:0e:13:02:6a
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SSL.com EV Root Certification Authority RSA R2 O=SSL Corporation
+# Subject: CN=SSL.com EV Root Certification Authority RSA R2 O=SSL Corporation
+# Label: "SSL.com EV Root Certification Authority RSA R2"
+# Serial: 6248227494352943350
+# MD5 Fingerprint: e1:1e:31:58:1a:ae:54:53:02:f6:17:6a:11:7b:4d:95
+# SHA1 Fingerprint: 74:3a:f0:52:9b:d0:32:a0:f4:4a:83:cd:d4:ba:a9:7b:7c:2e:c4:9a
+# SHA256 Fingerprint: 2e:7b:f1:6c:c2:24:85:a7:bb:e2:aa:86:96:75:07:61:b0:ae:39:be:3b:2f:e9:d0:cc:6d:4e:f7:34:91:42:5c
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=SSL.com EV Root Certification Authority ECC O=SSL Corporation
+# Subject: CN=SSL.com EV Root Certification Authority ECC O=SSL Corporation
+# Label: "SSL.com EV Root Certification Authority ECC"
+# Serial: 3182246526754555285
+# MD5 Fingerprint: 59:53:22:65:83:42:01:54:c0:ce:42:b9:5a:7c:f2:90
+# SHA1 Fingerprint: 4c:dd:51:a3:d1:f5:20:32:14:b0:c6:c5:32:23:03:91:c7:46:42:6d
+# SHA256 Fingerprint: 22:a2:c1:f7:bd:ed:70:4c:c1:e7:01:b5:f4:08:c3:10:88:0f:e9:56:b5:de:2a:4a:44:f9:9c:87:3a:25:a7:c8
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GlobalSign O=GlobalSign OU=GlobalSign Root CA - R6
+# Subject: CN=GlobalSign O=GlobalSign OU=GlobalSign Root CA - R6
+# Label: "GlobalSign Root CA - R6"
+# Serial: 1417766617973444989252670301619537
+# MD5 Fingerprint: 4f:dd:07:e4:d4:22:64:39:1e:0c:37:42:ea:d1:c6:ae
+# SHA1 Fingerprint: 80:94:64:0e:b5:a7:a1:ca:11:9c:1f:dd:d5:9f:81:02:63:a7:fb:d1
+# SHA256 Fingerprint: 2c:ab:ea:fe:37:d0:6c:a2:2a:ba:73:91:c0:03:3d:25:98:29:52:c4:53:64:73:49:76:3a:3a:b5:ad:6c:cf:69
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=OISTE WISeKey Global Root GC CA O=WISeKey OU=OISTE Foundation Endorsed
+# Subject: CN=OISTE WISeKey Global Root GC CA O=WISeKey OU=OISTE Foundation Endorsed
+# Label: "OISTE WISeKey Global Root GC CA"
+# Serial: 44084345621038548146064804565436152554
+# MD5 Fingerprint: a9:d6:b9:2d:2f:93:64:f8:a5:69:ca:91:e9:68:07:23
+# SHA1 Fingerprint: e0:11:84:5e:34:de:be:88:81:b9:9c:f6:16:26:d1:96:1f:c3:b9:31
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GTS Root R1 O=Google Trust Services LLC
+# Subject: CN=GTS Root R1 O=Google Trust Services LLC
+# Label: "GTS Root R1"
+# Serial: 146587175971765017618439757810265552097
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GTS Root R2 O=Google Trust Services LLC
+# Subject: CN=GTS Root R2 O=Google Trust Services LLC
+# Label: "GTS Root R2"
+# Serial: 146587176055767053814479386953112547951
+# MD5 Fingerprint: 44:ed:9a:0e:a4:09:3b:00:f2:ae:4c:a3:c6:61:b0:8b
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GTS Root R3 O=Google Trust Services LLC
+# Subject: CN=GTS Root R3 O=Google Trust Services LLC
+# Label: "GTS Root R3"
+# Serial: 146587176140553309517047991083707763997
+# MD5 Fingerprint: 1a:79:5b:6b:04:52:9c:5d:c7:74:33:1b:25:9a:f9:25
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=GTS Root R4 O=Google Trust Services LLC
+# Subject: CN=GTS Root R4 O=Google Trust Services LLC
+# Label: "GTS Root R4"
+# Serial: 146587176229350439916519468929765261721
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=UCA Global G2 Root O=UniTrust
+# Subject: CN=UCA Global G2 Root O=UniTrust
+# Label: "UCA Global G2 Root"
+# Serial: 124779693093741543919145257850076631279
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=UCA Extended Validation Root O=UniTrust
+# Subject: CN=UCA Extended Validation Root O=UniTrust
+# Label: "UCA Extended Validation Root"
+# Serial: 106100277556486529736699587978573607008
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Certigna Root CA O=Dhimyotis OU=0002 48146308100036
+# Subject: CN=Certigna Root CA O=Dhimyotis OU=0002 48146308100036
+# Label: "Certigna Root CA"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign Root CA - G1 O=eMudhra Technologies Limited OU=emSign PKI
+# Subject: CN=emSign Root CA - G1 O=eMudhra Technologies Limited OU=emSign PKI
+# Label: "emSign Root CA - G1"
+# Serial: 235931866688319308814040
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign ECC Root CA - G3 O=eMudhra Technologies Limited OU=emSign PKI
+# Subject: CN=emSign ECC Root CA - G3 O=eMudhra Technologies Limited OU=emSign PKI
+# Label: "emSign ECC Root CA - G3"
+# Serial: 287880440101571086945156
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign Root CA - C1 O=eMudhra Inc OU=emSign PKI
+# Subject: CN=emSign Root CA - C1 O=eMudhra Inc OU=emSign PKI
+# Label: "emSign Root CA - C1"
+# Serial: 825510296613316004955058
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign ECC Root CA - C3 O=eMudhra Inc OU=emSign PKI
+# Subject: CN=emSign ECC Root CA - C3 O=eMudhra Inc OU=emSign PKI
+# Label: "emSign ECC Root CA - C3"
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+# Issuer: CN=Hongkong Post Root CA 3 O=Hongkong Post
+# Subject: CN=Hongkong Post Root CA 3 O=Hongkong Post
+# Label: "Hongkong Post Root CA 3"
+# Serial: 46170865288971385588281144162979347873371282084
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+-----BEGIN CERTIFICATE-----
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+# Label: "Entrust Root Certification Authority - G4"
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diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm.h
new file mode 100644
index 0000000..2343c11
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_ALARM_H
+#define GRPCPP_ALARM_H
+
+#include <grpcpp/alarm_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::Alarm Alarm;
+}
+
+#endif  // GRPCPP_ALARM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm_impl.h
new file mode 100644
index 0000000..cd37882
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/alarm_impl.h	
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// An Alarm posts the user-provided tag to its associated completion queue or
+/// invokes the user-provided function on expiry or cancellation.
+#ifndef GRPCPP_ALARM_IMPL_H
+#define GRPCPP_ALARM_IMPL_H
+
+#include <functional>
+
+#include <grpc/grpc.h>
+#include <grpcpp/impl/codegen/completion_queue.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/codegen/time.h>
+#include <grpcpp/impl/grpc_library.h>
+
+namespace grpc_impl {
+
+class Alarm : private ::grpc::GrpcLibraryCodegen {
+ public:
+  /// Create an unset completion queue alarm
+  Alarm();
+
+  /// Destroy the given completion queue alarm, cancelling it in the process.
+  ~Alarm();
+
+  /// DEPRECATED: Create and set a completion queue alarm instance associated to
+  /// \a cq.
+  /// This form is deprecated because it is inherently racy.
+  /// \internal We rely on the presence of \a cq for grpc initialization. If \a
+  /// cq were ever to be removed, a reference to a static
+  /// internal::GrpcLibraryInitializer instance would need to be introduced
+  /// here. \endinternal.
+  template <typename T>
+  Alarm(::grpc::CompletionQueue* cq, const T& deadline, void* tag) : Alarm() {
+    SetInternal(cq, ::grpc::TimePoint<T>(deadline).raw_time(), tag);
+  }
+
+  /// Trigger an alarm instance on completion queue \a cq at the specified time.
+  /// Once the alarm expires (at \a deadline) or it's cancelled (see \a Cancel),
+  /// an event with tag \a tag will be added to \a cq. If the alarm expired, the
+  /// event's success bit will be true, false otherwise (ie, upon cancellation).
+  template <typename T>
+  void Set(::grpc::CompletionQueue* cq, const T& deadline, void* tag) {
+    SetInternal(cq, ::grpc::TimePoint<T>(deadline).raw_time(), tag);
+  }
+
+  /// Alarms aren't copyable.
+  Alarm(const Alarm&) = delete;
+  Alarm& operator=(const Alarm&) = delete;
+
+  /// Alarms are movable.
+  Alarm(Alarm&& rhs) : alarm_(rhs.alarm_) { rhs.alarm_ = nullptr; }
+  Alarm& operator=(Alarm&& rhs) {
+    alarm_ = rhs.alarm_;
+    rhs.alarm_ = nullptr;
+    return *this;
+  }
+
+  /// Cancel a completion queue alarm. Calling this function over an alarm that
+  /// has already fired has no effect.
+  void Cancel();
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  /// Set an alarm to invoke callback \a f. The argument to the callback
+  /// states whether the alarm expired at \a deadline (true) or was cancelled
+  /// (false)
+  template <typename T>
+  void Set(const T& deadline, std::function<void(bool)> f) {
+    SetInternal(::grpc::TimePoint<T>(deadline).raw_time(), std::move(f));
+  }
+#endif
+
+  /// NOTE: class experimental_type is not part of the public API of this class
+  /// TODO(vjpai): Move these contents to the public API of Alarm when
+  ///              they are no longer experimental
+  class experimental_type {
+   public:
+    explicit experimental_type(Alarm* alarm) : alarm_(alarm) {}
+
+    /// Set an alarm to invoke callback \a f. The argument to the callback
+    /// states whether the alarm expired at \a deadline (true) or was cancelled
+    /// (false)
+    template <typename T>
+    void Set(const T& deadline, std::function<void(bool)> f) {
+      alarm_->SetInternal(::grpc::TimePoint<T>(deadline).raw_time(),
+                          std::move(f));
+    }
+
+   private:
+    Alarm* alarm_;
+  };
+
+  /// NOTE: The function experimental() is not stable public API. It is a view
+  /// to the experimental components of this class. It may be changed or removed
+  /// at any time.
+  experimental_type experimental() { return experimental_type(this); }
+
+ private:
+  void SetInternal(::grpc::CompletionQueue* cq, gpr_timespec deadline,
+                   void* tag);
+  void SetInternal(gpr_timespec deadline, std::function<void(bool)> f);
+
+  ::grpc::internal::CompletionQueueTag* alarm_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_ALARM_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel.h
new file mode 100644
index 0000000..163c804
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel.h	
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CHANNEL_H
+#define GRPCPP_CHANNEL_H
+
+#include <grpcpp/channel_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::Channel Channel;
+
+namespace experimental {
+/// Resets the channel's connection backoff.
+/// TODO(roth): Once we see whether this proves useful, either create a gRFC
+/// and change this to be a method of the Channel class, or remove it.
+void ChannelResetConnectionBackoff(Channel* channel);
+}  // namespace experimental
+
+}  // namespace grpc
+
+#endif  // GRPCPP_CHANNEL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel_impl.h
new file mode 100644
index 0000000..4ec913a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/channel_impl.h	
@@ -0,0 +1,126 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CHANNEL_IMPL_H
+#define GRPCPP_CHANNEL_IMPL_H
+
+#include <memory>
+
+#include <grpc/grpc.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/codegen/sync.h>
+
+struct grpc_channel;
+
+namespace grpc {
+
+std::shared_ptr<::grpc_impl::Channel> CreateChannelInternal(
+    const grpc::string& host, grpc_channel* c_channel,
+    std::vector<
+        std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators);
+}  // namespace grpc
+namespace grpc_impl {
+
+namespace experimental {
+/// Resets the channel's connection backoff.
+/// TODO(roth): Once we see whether this proves useful, either create a gRFC
+/// and change this to be a method of the Channel class, or remove it.
+void ChannelResetConnectionBackoff(Channel* channel);
+}  // namespace experimental
+
+/// Channels represent a connection to an endpoint. Created by \a CreateChannel.
+class Channel final : public ::grpc::ChannelInterface,
+                      public ::grpc::internal::CallHook,
+                      public std::enable_shared_from_this<Channel>,
+                      private ::grpc::GrpcLibraryCodegen {
+ public:
+  ~Channel();
+
+  /// Get the current channel state. If the channel is in IDLE and
+  /// \a try_to_connect is set to true, try to connect.
+  grpc_connectivity_state GetState(bool try_to_connect) override;
+
+  /// Returns the LB policy name, or the empty string if not yet available.
+  grpc::string GetLoadBalancingPolicyName() const;
+
+  /// Returns the service config in JSON form, or the empty string if
+  /// not available.
+  grpc::string GetServiceConfigJSON() const;
+
+ private:
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc::internal::BlockingUnaryCallImpl;
+  friend void experimental::ChannelResetConnectionBackoff(Channel* channel);
+  friend std::shared_ptr<Channel> grpc::CreateChannelInternal(
+      const grpc::string& host, grpc_channel* c_channel,
+      std::vector<std::unique_ptr<
+          ::grpc::experimental::ClientInterceptorFactoryInterface>>
+          interceptor_creators);
+  friend class ::grpc::internal::InterceptedChannel;
+  Channel(const grpc::string& host, grpc_channel* c_channel,
+          std::vector<std::unique_ptr<
+              ::grpc::experimental::ClientInterceptorFactoryInterface>>
+              interceptor_creators);
+
+  ::grpc::internal::Call CreateCall(const ::grpc::internal::RpcMethod& method,
+                                    ::grpc_impl::ClientContext* context,
+                                    ::grpc_impl::CompletionQueue* cq) override;
+  void PerformOpsOnCall(::grpc::internal::CallOpSetInterface* ops,
+                        ::grpc::internal::Call* call) override;
+  void* RegisterMethod(const char* method) override;
+
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline,
+                               ::grpc_impl::CompletionQueue* cq,
+                               void* tag) override;
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) override;
+
+  ::grpc_impl::CompletionQueue* CallbackCQ() override;
+
+  ::grpc::internal::Call CreateCallInternal(
+      const ::grpc::internal::RpcMethod& method,
+      ::grpc_impl::ClientContext* context, ::grpc_impl::CompletionQueue* cq,
+      size_t interceptor_pos) override;
+
+  const grpc::string host_;
+  grpc_channel* const c_channel_;  // owned
+
+  // mu_ protects callback_cq_ (the per-channel callbackable completion queue)
+  grpc::internal::Mutex mu_;
+
+  // callback_cq_ references the callbackable completion queue associated
+  // with this channel (if any). It is set on the first call to CallbackCQ().
+  // It is _not owned_ by the channel; ownership belongs with its internal
+  // shutdown callback tag (invoked when the CQ is fully shutdown).
+  ::grpc_impl::CompletionQueue* callback_cq_ = nullptr;
+
+  std::vector<
+      std::unique_ptr<::grpc::experimental::ClientInterceptorFactoryInterface>>
+      interceptor_creators_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_CHANNEL_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/client_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/client_context.h
new file mode 100644
index 0000000..1994fcc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/client_context.h	
@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// A ClientContext allows the person implementing a service client to:
+///
+/// - Add custom metadata key-value pairs that will propagated to the server
+/// side.
+/// - Control call settings such as compression and authentication.
+/// - Initial and trailing metadata coming from the server.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call they are invoked with, that
+/// is to say, they aren't sticky. Some of these settings, such as the
+/// compression options, can be made persistent at channel construction time
+/// (see \a grpc::CreateCustomChannel).
+///
+/// \warning ClientContext instances should \em not be reused across rpcs.
+
+#ifndef GRPCPP_CLIENT_CONTEXT_H
+#define GRPCPP_CLIENT_CONTEXT_H
+
+#include <grpcpp/impl/codegen/client_context.h>
+
+#endif  // GRPCPP_CLIENT_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue.h
new file mode 100644
index 0000000..123b277
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_COMPLETION_QUEUE_H
+#define GRPCPP_COMPLETION_QUEUE_H
+
+#include <grpcpp/impl/codegen/completion_queue.h>
+
+#endif  // GRPCPP_COMPLETION_QUEUE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue_impl.h
new file mode 100644
index 0000000..b6fb2b4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/completion_queue_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_COMPLETION_QUEUE_IMPL_H
+#define GRPCPP_COMPLETION_QUEUE_IMPL_H
+
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+
+#endif  // GRPCPP_COMPLETION_QUEUE_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel.h
new file mode 100644
index 0000000..9b257ac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CREATE_CHANNEL_H
+#define GRPCPP_CREATE_CHANNEL_H
+
+#include <grpcpp/create_channel_impl.h>
+#include <grpcpp/support/channel_arguments.h>
+
+namespace grpc {
+
+static inline std::shared_ptr<::grpc::Channel> CreateChannel(
+    const grpc::string& target,
+    const std::shared_ptr<ChannelCredentials>& creds) {
+  return ::grpc_impl::CreateChannelImpl(target, creds);
+}
+
+static inline std::shared_ptr<::grpc::Channel> CreateCustomChannel(
+    const grpc::string& target,
+    const std::shared_ptr<ChannelCredentials>& creds,
+    const ChannelArguments& args) {
+  return ::grpc_impl::CreateCustomChannelImpl(target, creds, args);
+}
+
+namespace experimental {
+
+static inline std::shared_ptr<::grpc::Channel>
+CreateCustomChannelWithInterceptors(
+    const grpc::string& target,
+    const std::shared_ptr<ChannelCredentials>& creds,
+    const ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  return ::grpc_impl::experimental::CreateCustomChannelWithInterceptors(
+      target, creds, args, std::move(interceptor_creators));
+}
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_CREATE_CHANNEL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_impl.h
new file mode 100644
index 0000000..02896e6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_impl.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CREATE_CHANNEL_IMPL_H
+#define GRPCPP_CREATE_CHANNEL_IMPL_H
+
+#include <memory>
+
+#include <grpcpp/channel.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/security/credentials.h>
+#include <grpcpp/support/channel_arguments.h>
+#include <grpcpp/support/config.h>
+
+namespace grpc_impl {
+/// Create a new \a Channel pointing to \a target.
+///
+/// \param target The URI of the endpoint to connect to.
+/// \param creds Credentials to use for the created channel. If it does not
+/// hold an object or is invalid, a lame channel (one on which all operations
+/// fail) is returned.
+std::shared_ptr<::grpc::Channel> CreateChannelImpl(
+    const grpc::string& target,
+    const std::shared_ptr<::grpc::ChannelCredentials>& creds);
+
+/// Create a new \em custom \a Channel pointing to \a target.
+///
+/// \warning For advanced use and testing ONLY. Override default channel
+/// arguments only if necessary.
+///
+/// \param target The URI of the endpoint to connect to.
+/// \param creds Credentials to use for the created channel. If it does not
+/// hold an object or is invalid, a lame channel (one on which all operations
+/// fail) is returned.
+/// \param args Options for channel creation.
+std::shared_ptr<::grpc::Channel> CreateCustomChannelImpl(
+    const grpc::string& target,
+    const std::shared_ptr<::grpc::ChannelCredentials>& creds,
+    const ::grpc::ChannelArguments& args);
+
+namespace experimental {
+/// Create a new \em custom \a Channel pointing to \a target with \a
+/// interceptors being invoked per call.
+///
+/// \warning For advanced use and testing ONLY. Override default channel
+/// arguments only if necessary.
+///
+/// \param target The URI of the endpoint to connect to.
+/// \param creds Credentials to use for the created channel. If it does not
+/// hold an object or is invalid, a lame channel (one on which all operations
+/// fail) is returned.
+/// \param args Options for channel creation.
+std::shared_ptr<::grpc::Channel> CreateCustomChannelWithInterceptors(
+    const grpc::string& target,
+    const std::shared_ptr<grpc::ChannelCredentials>& creds,
+    const ::grpc::ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators);
+}  // namespace experimental
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_CREATE_CHANNEL_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix.h
new file mode 100644
index 0000000..b8a1f5e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CREATE_CHANNEL_POSIX_H
+#define GRPCPP_CREATE_CHANNEL_POSIX_H
+
+#include <grpcpp/create_channel_posix_impl.h>
+
+namespace grpc {
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+static inline std::shared_ptr<Channel> CreateInsecureChannelFromFd(
+    const grpc::string& target, int fd) {
+  return ::grpc_impl::CreateInsecureChannelFromFd(target, fd);
+}
+
+static inline std::shared_ptr<Channel> CreateCustomInsecureChannelFromFd(
+    const grpc::string& target, int fd, const ChannelArguments& args) {
+  return ::grpc_impl::CreateCustomInsecureChannelFromFd(target, fd, args);
+}
+
+namespace experimental {
+
+static inline std::shared_ptr<Channel>
+CreateCustomInsecureChannelWithInterceptorsFromFd(
+    const grpc::string& target, int fd, const ChannelArguments& args,
+    std::unique_ptr<std::vector<
+        std::unique_ptr<experimental::ClientInterceptorFactoryInterface>>>
+        interceptor_creators) {
+  return ::grpc_impl::experimental::
+      CreateCustomInsecureChannelWithInterceptorsFromFd(
+          target, fd, args, std::move(interceptor_creators));
+}
+
+}  // namespace experimental
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc
+
+#endif  // GRPCPP_CREATE_CHANNEL_POSIX_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix_impl.h
new file mode 100644
index 0000000..5c11120
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/create_channel_posix_impl.h	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_CREATE_CHANNEL_POSIX_IMPL_H
+#define GRPCPP_CREATE_CHANNEL_POSIX_IMPL_H
+
+#include <memory>
+
+#include <grpc/support/port_platform.h>
+#include <grpcpp/channel.h>
+#include <grpcpp/support/channel_arguments.h>
+
+namespace grpc_impl {
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+/// Create a new \a Channel communicating over the given file descriptor.
+///
+/// \param target The name of the target.
+/// \param fd The file descriptor representing a socket.
+std::shared_ptr<grpc::Channel> CreateInsecureChannelFromFd(
+    const grpc::string& target, int fd);
+
+/// Create a new \a Channel communicating over given file descriptor with custom
+/// channel arguments.
+///
+/// \param target The name of the target.
+/// \param fd The file descriptor representing a socket.
+/// \param args Options for channel creation.
+std::shared_ptr<grpc::Channel> CreateCustomInsecureChannelFromFd(
+    const grpc::string& target, int fd, const grpc::ChannelArguments& args);
+
+namespace experimental {
+
+/// Create a new \a Channel communicating over given file descriptor with custom
+/// channel arguments.
+///
+/// \param target The name of the target.
+/// \param fd The file descriptor representing a socket.
+/// \param args Options for channel creation.
+/// \param interceptor_creators Vector of interceptor factory objects.
+std::shared_ptr<grpc::Channel>
+CreateCustomInsecureChannelWithInterceptorsFromFd(
+    const grpc::string& target, int fd, const grpc::ChannelArguments& args,
+    std::unique_ptr<std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>>
+        interceptor_creators);
+
+}  // namespace experimental
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_CREATE_CHANNEL_POSIX_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/ext/health_check_service_server_builder_option.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/ext/health_check_service_server_builder_option.h
new file mode 100644
index 0000000..dd43b05
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/ext/health_check_service_server_builder_option.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
+#define GRPCPP_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
+
+#include <memory>
+
+#include <grpcpp/health_check_service_interface.h>
+#include <grpcpp/impl/server_builder_option.h>
+#include <grpcpp/support/config.h>
+
+namespace grpc {
+
+class HealthCheckServiceServerBuilderOption : public ServerBuilderOption {
+ public:
+  /// The ownership of \a hc will be taken and transferred to the grpc server.
+  /// To explicitly disable default service, pass in a nullptr.
+  explicit HealthCheckServiceServerBuilderOption(
+      std::unique_ptr<HealthCheckServiceInterface> hc);
+  ~HealthCheckServiceServerBuilderOption() override {}
+  void UpdateArguments(ChannelArguments* args) override;
+  void UpdatePlugins(
+      std::vector<std::unique_ptr<ServerBuilderPlugin>>* plugins) override;
+
+ private:
+  std::unique_ptr<HealthCheckServiceInterface> hc_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_EXT_HEALTH_CHECK_SERVICE_SERVER_BUILDER_OPTION_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/async_generic_service.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/async_generic_service.h
new file mode 100644
index 0000000..2c67edc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/async_generic_service.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
+#define GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
+
+#include <grpcpp/impl/codegen/async_generic_service.h>
+
+#endif  // GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub.h
new file mode 100644
index 0000000..f4c4664
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_GENERIC_GENERIC_STUB_H
+#define GRPCPP_GENERIC_GENERIC_STUB_H
+
+#include <grpcpp/generic/generic_stub_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::GenericStub GenericStub;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_GENERIC_GENERIC_STUB_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub_impl.h
new file mode 100644
index 0000000..906a5d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/generic/generic_stub_impl.h	
@@ -0,0 +1,216 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_GENERIC_GENERIC_STUB_IMPL_H
+#define GRPCPP_GENERIC_GENERIC_STUB_IMPL_H
+
+#include <functional>
+
+#include <grpcpp/client_context.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/async_stream_impl.h>
+#include <grpcpp/support/async_unary_call_impl.h>
+#include <grpcpp/support/byte_buffer.h>
+#include <grpcpp/support/client_callback_impl.h>
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ClientAsyncReaderWriter<ByteBuffer, ByteBuffer>
+    GenericClientAsyncReaderWriter;
+typedef ::grpc_impl::ClientAsyncResponseReader<ByteBuffer>
+    GenericClientAsyncResponseReader;
+}  // namespace grpc
+namespace grpc_impl {
+class CompletionQueue;
+
+/// Generic stubs provide a type-unaware interface to call gRPC methods
+/// by name. In practice, the Request and Response types should be basic
+/// types like grpc::ByteBuffer or proto::MessageLite (the base protobuf).
+template <class RequestType, class ResponseType>
+class TemplatedGenericStub final {
+ public:
+  explicit TemplatedGenericStub(std::shared_ptr<grpc::ChannelInterface> channel)
+      : channel_(channel) {}
+
+  /// Setup a call to a named method \a method using \a context, but don't
+  /// start it. Let it be started explicitly with StartCall and a tag.
+  /// The return value only indicates whether or not registration of the call
+  /// succeeded (i.e. the call won't proceed if the return value is nullptr).
+  std::unique_ptr<ClientAsyncReaderWriter<RequestType, ResponseType>>
+  PrepareCall(ClientContext* context, const grpc::string& method,
+              CompletionQueue* cq) {
+    return CallInternal(channel_.get(), context, method, cq, false, nullptr);
+  }
+
+  /// Setup a unary call to a named method \a method using \a context, and don't
+  /// start it. Let it be started explicitly with StartCall.
+  /// The return value only indicates whether or not registration of the call
+  /// succeeded (i.e. the call won't proceed if the return value is nullptr).
+  std::unique_ptr<ClientAsyncResponseReader<ResponseType>> PrepareUnaryCall(
+      ClientContext* context, const grpc::string& method,
+      const RequestType& request, CompletionQueue* cq) {
+    return std::unique_ptr<ClientAsyncResponseReader<ResponseType>>(
+        internal::ClientAsyncResponseReaderFactory<ResponseType>::Create(
+            channel_.get(), cq,
+            grpc::internal::RpcMethod(method.c_str(),
+                                      grpc::internal::RpcMethod::NORMAL_RPC),
+            context, request, false));
+  }
+
+  /// DEPRECATED for multi-threaded use
+  /// Begin a call to a named method \a method using \a context.
+  /// A tag \a tag will be delivered to \a cq when the call has been started
+  /// (i.e, initial metadata has been sent).
+  /// The return value only indicates whether or not registration of the call
+  /// succeeded (i.e. the call won't proceed if the return value is nullptr).
+  std::unique_ptr<ClientAsyncReaderWriter<RequestType, ResponseType>> Call(
+      ClientContext* context, const grpc::string& method, CompletionQueue* cq,
+      void* tag) {
+    return CallInternal(channel_.get(), context, method, cq, true, tag);
+  }
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  /// Setup and start a unary call to a named method \a method using
+  /// \a context and specifying the \a request and \a response buffers.
+  void UnaryCall(ClientContext* context, const grpc::string& method,
+                 const RequestType* request, ResponseType* response,
+                 std::function<void(grpc::Status)> on_completion) {
+    UnaryCallInternal(context, method, request, response,
+                      std::move(on_completion));
+  }
+
+  /// Setup a unary call to a named method \a method using
+  /// \a context and specifying the \a request and \a response buffers.
+  /// Like any other reactor-based RPC, it will not be activated until
+  /// StartCall is invoked on its reactor.
+  void PrepareUnaryCall(ClientContext* context, const grpc::string& method,
+                        const RequestType* request, ResponseType* response,
+                        ClientUnaryReactor* reactor) {
+    PrepareUnaryCallInternal(context, method, request, response, reactor);
+  }
+
+  /// Setup a call to a named method \a method using \a context and tied to
+  /// \a reactor . Like any other bidi streaming RPC, it will not be activated
+  /// until StartCall is invoked on its reactor.
+  void PrepareBidiStreamingCall(
+      ClientContext* context, const grpc::string& method,
+      ClientBidiReactor<RequestType, ResponseType>* reactor) {
+    PrepareBidiStreamingCallInternal(context, method, reactor);
+  }
+#endif
+
+  /// NOTE: class experimental_type is not part of the public API of this class
+  /// TODO(vjpai): Move these contents to the public API of GenericStub when
+  ///              they are no longer experimental
+  class experimental_type {
+   public:
+    explicit experimental_type(TemplatedGenericStub* stub) : stub_(stub) {}
+
+    /// Setup and start a unary call to a named method \a method using
+    /// \a context and specifying the \a request and \a response buffers.
+    void UnaryCall(ClientContext* context, const grpc::string& method,
+                   const RequestType* request, ResponseType* response,
+                   std::function<void(grpc::Status)> on_completion) {
+      stub_->UnaryCallInternal(context, method, request, response,
+                               std::move(on_completion));
+    }
+
+    /// Setup a unary call to a named method \a method using
+    /// \a context and specifying the \a request and \a response buffers.
+    /// Like any other reactor-based RPC, it will not be activated until
+    /// StartCall is invoked on its reactor.
+    void PrepareUnaryCall(ClientContext* context, const grpc::string& method,
+                          const RequestType* request, ResponseType* response,
+                          ClientUnaryReactor* reactor) {
+      stub_->PrepareUnaryCallInternal(context, method, request, response,
+                                      reactor);
+    }
+
+    /// Setup a call to a named method \a method using \a context and tied to
+    /// \a reactor . Like any other bidi streaming RPC, it will not be activated
+    /// until StartCall is invoked on its reactor.
+    void PrepareBidiStreamingCall(
+        ClientContext* context, const grpc::string& method,
+        ClientBidiReactor<RequestType, ResponseType>* reactor) {
+      stub_->PrepareBidiStreamingCallInternal(context, method, reactor);
+    }
+
+   private:
+    TemplatedGenericStub* stub_;
+  };
+
+  /// NOTE: The function experimental() is not stable public API. It is a view
+  /// to the experimental components of this class. It may be changed or removed
+  /// at any time.
+  experimental_type experimental() { return experimental_type(this); }
+
+ private:
+  std::shared_ptr<grpc::ChannelInterface> channel_;
+
+  void UnaryCallInternal(ClientContext* context, const grpc::string& method,
+                         const RequestType* request, ResponseType* response,
+                         std::function<void(grpc::Status)> on_completion) {
+    internal::CallbackUnaryCall(
+        channel_.get(),
+        grpc::internal::RpcMethod(method.c_str(),
+                                  grpc::internal::RpcMethod::NORMAL_RPC),
+        context, request, response, std::move(on_completion));
+  }
+
+  void PrepareUnaryCallInternal(ClientContext* context,
+                                const grpc::string& method,
+                                const RequestType* request,
+                                ResponseType* response,
+                                ClientUnaryReactor* reactor) {
+    internal::ClientCallbackUnaryFactory::Create<RequestType, ResponseType>(
+        channel_.get(),
+        grpc::internal::RpcMethod(method.c_str(),
+                                  grpc::internal::RpcMethod::NORMAL_RPC),
+        context, request, response, reactor);
+  }
+
+  void PrepareBidiStreamingCallInternal(
+      ClientContext* context, const grpc::string& method,
+      ClientBidiReactor<RequestType, ResponseType>* reactor) {
+    internal::ClientCallbackReaderWriterFactory<RequestType, ResponseType>::
+        Create(channel_.get(),
+               grpc::internal::RpcMethod(
+                   method.c_str(), grpc::internal::RpcMethod::BIDI_STREAMING),
+               context, reactor);
+  }
+
+  std::unique_ptr<ClientAsyncReaderWriter<RequestType, ResponseType>>
+  CallInternal(grpc::ChannelInterface* channel, ClientContext* context,
+               const grpc::string& method, CompletionQueue* cq, bool start,
+               void* tag) {
+    return std::unique_ptr<ClientAsyncReaderWriter<RequestType, ResponseType>>(
+        internal::ClientAsyncReaderWriterFactory<RequestType, ResponseType>::
+            Create(
+                channel, cq,
+                grpc::internal::RpcMethod(
+                    method.c_str(), grpc::internal::RpcMethod::BIDI_STREAMING),
+                context, start, tag));
+  }
+};
+
+typedef TemplatedGenericStub<grpc::ByteBuffer, grpc::ByteBuffer> GenericStub;
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_GENERIC_GENERIC_STUB_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/grpcpp.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/grpcpp.h
new file mode 100644
index 0000000..aa8a242
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/grpcpp.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// \mainpage gRPC C++ API
+///
+/// The gRPC C++ API mainly consists of the following classes:
+/// <br>
+/// - grpc::Channel, which represents the connection to an endpoint. See [the
+/// gRPC Concepts page](https://grpc.io/docs/guides/concepts.html) for more
+/// details. Channels are created by the factory function grpc::CreateChannel.
+///
+/// - grpc::CompletionQueue, the producer-consumer queue used for all
+/// asynchronous communication with the gRPC runtime.
+///
+/// - grpc::ClientContext and grpc::ServerContext, where optional configuration
+/// for an RPC can be set, such as setting custom metadata to be conveyed to the
+/// peer, compression settings, authentication, etc.
+///
+/// - grpc::Server, representing a gRPC server, created by grpc::ServerBuilder.
+///
+/// Streaming calls are handled with the streaming classes in
+/// \ref sync_stream.h and
+/// \ref async_stream.h.
+///
+/// Refer to the
+/// [examples](https://github.com/grpc/grpc/blob/master/examples/cpp)
+/// for code putting these pieces into play.
+
+#ifndef GRPCPP_GRPCPP_H
+#define GRPCPP_GRPCPP_H
+
+// Pragma for http://include-what-you-use.org/ tool, tells that following
+// headers are not private for grpcpp.h and are part of its interface.
+// IWYU pragma: begin_exports
+#include <grpc/grpc.h>
+
+#include <grpcpp/channel.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/create_channel.h>
+#include <grpcpp/create_channel_posix.h>
+#include <grpcpp/server.h>
+#include <grpcpp/server_builder.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/server_posix.h>
+// IWYU pragma: end_exports
+
+namespace grpc {
+/// Return gRPC library version.
+grpc::string Version();
+}  // namespace grpc
+
+#endif  // GRPCPP_GRPCPP_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface.h
new file mode 100644
index 0000000..a51b0d1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_H
+#define GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_H
+
+#include <grpcpp/health_check_service_interface_impl.h>
+
+namespace grpc {
+
+const char kHealthCheckServiceInterfaceArg[] =
+    "grpc.health_check_service_interface";
+
+typedef ::grpc_impl::HealthCheckServiceInterface HealthCheckServiceInterface;
+
+static inline void EnableDefaultHealthCheckService(bool enable) {
+  ::grpc_impl::EnableDefaultHealthCheckService(enable);
+}
+
+static inline bool DefaultHealthCheckServiceEnabled() {
+  return ::grpc_impl::DefaultHealthCheckServiceEnabled();
+}
+
+}  // namespace grpc
+
+#endif  // GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface_impl.h
new file mode 100644
index 0000000..025dadb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/health_check_service_interface_impl.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_IMPL_H
+#define GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_IMPL_H
+
+#include <grpcpp/support/config.h>
+
+namespace grpc_impl {
+
+/// The gRPC server uses this interface to expose the health checking service
+/// without depending on protobuf.
+class HealthCheckServiceInterface {
+ public:
+  virtual ~HealthCheckServiceInterface() {}
+
+  /// Set or change the serving status of the given \a service_name.
+  virtual void SetServingStatus(const grpc::string& service_name,
+                                bool serving) = 0;
+  /// Apply to all registered service names.
+  virtual void SetServingStatus(bool serving) = 0;
+
+  /// Set all registered service names to not serving and prevent future
+  /// state changes.
+  virtual void Shutdown() {}
+};
+
+/// Enable/disable the default health checking service. This applies to all C++
+/// servers created afterwards. For each server, user can override the default
+/// with a HealthCheckServiceServerBuilderOption.
+/// NOT thread safe.
+void EnableDefaultHealthCheckService(bool enable);
+
+/// Returns whether the default health checking service is enabled.
+/// NOT thread safe.
+bool DefaultHealthCheckServiceEnabled();
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_HEALTH_CHECK_SERVICE_INTERFACE_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/call.h
new file mode 100644
index 0000000..a6b1312
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/call.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CALL_H
+#define GRPCPP_IMPL_CALL_H
+
+#include <grpcpp/impl/codegen/call.h>
+
+#endif  // GRPCPP_IMPL_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/channel_argument_option.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/channel_argument_option.h
new file mode 100644
index 0000000..0c48824
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/channel_argument_option.h	
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CHANNEL_ARGUMENT_OPTION_H
+#define GRPCPP_IMPL_CHANNEL_ARGUMENT_OPTION_H
+
+#include <map>
+#include <memory>
+
+#include <grpcpp/impl/server_builder_option.h>
+#include <grpcpp/support/channel_arguments.h>
+
+namespace grpc {
+
+std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
+    const grpc::string& name, const grpc::string& value);
+std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
+    const grpc::string& name, int value);
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CHANNEL_ARGUMENT_OPTION_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/client_unary_call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/client_unary_call.h
new file mode 100644
index 0000000..378482c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/client_unary_call.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CLIENT_UNARY_CALL_H
+#define GRPCPP_IMPL_CLIENT_UNARY_CALL_H
+
+#include <grpcpp/impl/codegen/client_unary_call.h>
+
+#endif  // GRPCPP_IMPL_CLIENT_UNARY_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_generic_service.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_generic_service.h
new file mode 100644
index 0000000..05f10c6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_generic_service.h	
@@ -0,0 +1,163 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpcpp/impl/codegen/async_stream_impl.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+
+struct grpc_server;
+
+namespace grpc {
+
+typedef ::grpc_impl::ServerAsyncReaderWriter<ByteBuffer, ByteBuffer>
+    GenericServerAsyncReaderWriter;
+typedef ::grpc_impl::ServerAsyncResponseWriter<ByteBuffer>
+    GenericServerAsyncResponseWriter;
+typedef ::grpc_impl::ServerAsyncReader<ByteBuffer, ByteBuffer>
+    GenericServerAsyncReader;
+typedef ::grpc_impl::ServerAsyncWriter<ByteBuffer> GenericServerAsyncWriter;
+
+class GenericServerContext final : public ::grpc_impl::ServerContext {
+ public:
+  const grpc::string& method() const { return method_; }
+  const grpc::string& host() const { return host_; }
+
+ private:
+  friend class grpc_impl::Server;
+  friend class grpc::ServerInterface;
+
+  void Clear() {
+    method_.clear();
+    host_.clear();
+    ::grpc_impl::ServerContext::Clear();
+  }
+
+  grpc::string method_;
+  grpc::string host_;
+};
+
+// A generic service at the server side accepts all RPC methods and hosts. It is
+// typically used in proxies. The generic service can be registered to a server
+// which also has other services.
+// Sample usage:
+//   ServerBuilder builder;
+//   auto cq = builder.AddCompletionQueue();
+//   AsyncGenericService generic_service;
+//   builder.RegisterAsyncGenericService(&generic_service);
+//   auto server = builder.BuildAndStart();
+//
+//   // request a new call
+//   GenericServerContext context;
+//   GenericServerAsyncReaderWriter stream;
+//   generic_service.RequestCall(&context, &stream, cq.get(), cq.get(), tag);
+//
+// When tag is retrieved from cq->Next(), context.method() can be used to look
+// at the method and the RPC can be handled accordingly.
+class AsyncGenericService final {
+ public:
+  AsyncGenericService() : server_(nullptr) {}
+
+  void RequestCall(GenericServerContext* ctx,
+                   GenericServerAsyncReaderWriter* reader_writer,
+                   ::grpc_impl::CompletionQueue* call_cq,
+                   ::grpc_impl::ServerCompletionQueue* notification_cq,
+                   void* tag);
+
+ private:
+  friend class grpc_impl::Server;
+  grpc_impl::Server* server_;
+};
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+
+/// \a ServerGenericBidiReactor is the reactor class for bidi streaming RPCs
+/// invoked on a CallbackGenericService. It is just a ServerBidi reactor with
+/// ByteBuffer arguments.
+using ServerGenericBidiReactor =
+    ::grpc_impl::ServerBidiReactor<ByteBuffer, ByteBuffer>;
+
+class GenericCallbackServerContext final
+    : public ::grpc_impl::CallbackServerContext {
+ public:
+  const grpc::string& method() const { return method_; }
+  const grpc::string& host() const { return host_; }
+
+ private:
+  friend class ::grpc_impl::Server;
+  friend class ::grpc::ServerInterface;
+
+  void Clear() {
+    method_.clear();
+    host_.clear();
+    ::grpc_impl::CallbackServerContext::Clear();
+  }
+
+  grpc::string method_;
+  grpc::string host_;
+};
+
+/// \a CallbackGenericService is the base class for generic services implemented
+/// using the callback API and registered through the ServerBuilder using
+/// RegisterCallbackGenericService.
+class CallbackGenericService {
+ public:
+  CallbackGenericService() {}
+  virtual ~CallbackGenericService() {}
+
+  /// The "method handler" for the generic API. This function should be
+  /// overridden to provide a ServerGenericBidiReactor that implements the
+  /// application-level interface for this RPC. Unimplemented by default.
+  virtual ServerGenericBidiReactor* CreateReactor(
+      GenericCallbackServerContext* /*ctx*/) {
+    class Reactor : public ServerGenericBidiReactor {
+     public:
+      Reactor() { this->Finish(Status(StatusCode::UNIMPLEMENTED, "")); }
+      void OnDone() override { delete this; }
+    };
+    return new Reactor;
+  }
+
+ private:
+  friend class ::grpc_impl::Server;
+
+  ::grpc_impl::internal::CallbackBidiHandler<ByteBuffer, ByteBuffer>*
+  Handler() {
+    return new ::grpc_impl::internal::CallbackBidiHandler<ByteBuffer,
+                                                          ByteBuffer>(
+        [this](::grpc_impl::CallbackServerContext* ctx) {
+          return CreateReactor(static_cast<GenericCallbackServerContext*>(ctx));
+        });
+  }
+
+  grpc_impl::Server* server_{nullptr};
+};
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_GENERIC_SERVICE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream.h
new file mode 100644
index 0000000..d76a898
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream.h	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_H
+
+#include <grpcpp/impl/codegen/async_stream_impl.h>
+
+namespace grpc {
+
+namespace internal {
+
+typedef ::grpc_impl::internal::ClientAsyncStreamingInterface
+    ClientAsyncStreamingInterface;
+
+template <class R>
+using AsyncReaderInterface = ::grpc_impl::internal::AsyncReaderInterface<R>;
+
+template <class W>
+using AsyncWriterInterface = ::grpc_impl::internal::AsyncWriterInterface<W>;
+
+}  // namespace internal
+
+template <class R>
+using ClientAsyncReaderInterface = ::grpc_impl::ClientAsyncReaderInterface<R>;
+
+template <class R>
+using ClientAsyncReader = ::grpc_impl::ClientAsyncReader<R>;
+
+template <class W>
+using ClientAsyncWriterInterface = ::grpc_impl::ClientAsyncWriterInterface<W>;
+
+template <class W>
+using ClientAsyncWriter = ::grpc_impl::ClientAsyncWriter<W>;
+
+template <class W, class R>
+using ClientAsyncReaderWriterInterface =
+    ::grpc_impl::ClientAsyncReaderWriterInterface<W, R>;
+
+template <class W, class R>
+using ClientAsyncReaderWriter = ::grpc_impl::ClientAsyncReaderWriter<W, R>;
+
+template <class W, class R>
+using ServerAsyncReaderInterface =
+    ::grpc_impl::ServerAsyncReaderInterface<W, R>;
+
+template <class W, class R>
+using ServerAsyncReader = ::grpc_impl::ServerAsyncReader<W, R>;
+
+template <class W>
+using ServerAsyncWriterInterface = ::grpc_impl::ServerAsyncWriterInterface<W>;
+
+template <class W>
+using ServerAsyncWriter = ::grpc_impl::ServerAsyncWriter<W>;
+
+template <class W, class R>
+using ServerAsyncReaderWriterInterface =
+    ::grpc_impl::ServerAsyncReaderWriterInterface<W, R>;
+
+template <class W, class R>
+using ServerAsyncReaderWriter = ::grpc_impl::ServerAsyncReaderWriter<W, R>;
+
+namespace internal {
+template <class R>
+using ClientAsyncReaderFactory =
+    ::grpc_impl::internal::ClientAsyncReaderFactory<R>;
+
+template <class W>
+using ClientAsyncWriterFactory =
+    ::grpc_impl::internal::ClientAsyncWriterFactory<W>;
+
+template <class W, class R>
+using ClientAsyncReaderWriterFactory =
+    ::grpc_impl::internal::ClientAsyncReaderWriterFactory<W, R>;
+
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream_impl.h
new file mode 100644
index 0000000..f832f5e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_stream_impl.h	
@@ -0,0 +1,1134 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_IMPL_H
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/server_context_impl.h>
+#include <grpcpp/impl/codegen/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+namespace internal {
+/// Common interface for all client side asynchronous streaming.
+class ClientAsyncStreamingInterface {
+ public:
+  virtual ~ClientAsyncStreamingInterface() {}
+
+  /// Start the call that was set up by the constructor, but only if the
+  /// constructor was invoked through the "Prepare" API which doesn't actually
+  /// start the call
+  virtual void StartCall(void* tag) = 0;
+
+  /// Request notification of the reading of the initial metadata. Completion
+  /// will be notified by \a tag on the associated completion queue.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a AsyncReaderInterface::Read method.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  virtual void ReadInitialMetadata(void* tag) = 0;
+
+  /// Indicate that the stream is to be finished and request notification for
+  /// when the call has been ended.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// It is appropriate to call this method exactly once when both:
+  ///   * the client side has no more message to send
+  ///     (this can be declared implicitly by calling this method, or
+  ///     explicitly through an earlier call to the <i>WritesDone</i> method
+  ///     of the class in use, e.g. \a ClientAsyncWriterInterface::WritesDone or
+  ///     \a ClientAsyncReaderWriterInterface::WritesDone).
+  ///   * there are no more messages to be received from the server (this can
+  ///     be known implicitly by the calling code, or explicitly from an
+  ///     earlier call to \a AsyncReaderInterface::Read that yielded a failed
+  ///     result, e.g. cq->Next(&read_tag, &ok) filled in 'ok' with 'false').
+  ///
+  /// The tag will be returned when either:
+  /// - all incoming messages have been read and the server has returned
+  ///   a status.
+  /// - the server has returned a non-OK status.
+  /// - the call failed for some reason and the library generated a
+  ///   status.
+  ///
+  /// Note that implementations of this method attempt to receive initial
+  /// metadata from the server if initial metadata hasn't yet been received.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[out] status To be updated with the operation status.
+  virtual void Finish(::grpc::Status* status, void* tag) = 0;
+};
+
+/// An interface that yields a sequence of messages of type \a R.
+template <class R>
+class AsyncReaderInterface {
+ public:
+  virtual ~AsyncReaderInterface() {}
+
+  /// Read a message of type \a R into \a msg. Completion will be notified by \a
+  /// tag on the associated completion queue.
+  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
+  /// should not be called concurrently with other streaming APIs
+  /// on the same stream. It is not meaningful to call it concurrently
+  /// with another \a AsyncReaderInterface::Read on the same stream since reads
+  /// on the same stream are delivered in order.
+  ///
+  /// \param[out] msg Where to eventually store the read message.
+  /// \param[in] tag The tag identifying the operation.
+  ///
+  /// Side effect: note that this method attempt to receive initial metadata for
+  /// a stream if it hasn't yet been received.
+  virtual void Read(R* msg, void* tag) = 0;
+};
+
+/// An interface that can be fed a sequence of messages of type \a W.
+template <class W>
+class AsyncWriterInterface {
+ public:
+  virtual ~AsyncWriterInterface() {}
+
+  /// Request the writing of \a msg with identifying tag \a tag.
+  ///
+  /// Only one write may be outstanding at any given time. This means that
+  /// after calling Write, one must wait to receive \a tag from the completion
+  /// queue BEFORE calling Write again.
+  /// This is thread-safe with respect to \a AsyncReaderInterface::Read
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg, so it is safe to
+  /// to deallocate once Write returns.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void Write(const W& msg, void* tag) = 0;
+
+  /// Request the writing of \a msg using WriteOptions \a options with
+  /// identifying tag \a tag.
+  ///
+  /// Only one write may be outstanding at any given time. This means that
+  /// after calling Write, one must wait to receive \a tag from the completion
+  /// queue BEFORE calling Write again.
+  /// WriteOptions \a options is used to set the write options of this message.
+  /// This is thread-safe with respect to \a AsyncReaderInterface::Read
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg, so it is safe to
+  /// to deallocate once Write returns.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void Write(const W& msg, ::grpc::WriteOptions options, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with the writing
+  /// of trailing metadata, using WriteOptions \a options with
+  /// identifying tag \a tag.
+  ///
+  /// For client, WriteLast is equivalent of performing Write and
+  /// WritesDone in a single step.
+  /// For server, WriteLast buffers the \a msg. The writing of \a msg is held
+  /// until Finish is called, where \a msg and trailing metadata are coalesced
+  /// and write is initiated. Note that WriteLast can only buffer \a msg up to
+  /// the flow control window size. If \a msg size is larger than the window
+  /// size, it will be sent on wire without buffering.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg, so it is safe to
+  /// to deallocate once Write returns.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] tag The tag identifying the operation.
+  void WriteLast(const W& msg, ::grpc::WriteOptions options, void* tag) {
+    Write(msg, options.set_last_message(), tag);
+  }
+};
+
+}  // namespace internal
+
+template <class R>
+class ClientAsyncReaderInterface
+    : public internal::ClientAsyncStreamingInterface,
+      public internal::AsyncReaderInterface<R> {};
+
+namespace internal {
+template <class R>
+class ClientAsyncReaderFactory {
+ public:
+  /// Create a stream object.
+  /// Write the first request out if \a start is set.
+  /// \a tag will be notified on \a cq when the call has been started and
+  /// \a request has been written out. If \a start is not set, \a tag must be
+  /// nullptr and the actual call must be initiated by StartCall
+  /// Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  template <class W>
+  static ClientAsyncReader<R>* Create(::grpc::ChannelInterface* channel,
+                                      ::grpc_impl::CompletionQueue* cq,
+                                      const ::grpc::internal::RpcMethod& method,
+                                      ::grpc_impl::ClientContext* context,
+                                      const W& request, bool start, void* tag) {
+    ::grpc::internal::Call call = channel->CreateCall(method, context, cq);
+    return new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncReader<R>)))
+        ClientAsyncReader<R>(call, context, request, start, tag);
+  }
+};
+}  // namespace internal
+
+/// Async client-side API for doing server-streaming RPCs,
+/// where the incoming message stream coming from the server has
+/// messages of type \a R.
+template <class R>
+class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncReader));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void StartCall(void* tag) override {
+    GPR_CODEGEN_ASSERT(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata
+  /// method for semantics.
+  ///
+  /// Side effect:
+  ///   - upon receiving initial metadata from the server,
+  ///     the \a ClientContext associated with this call is updated, and the
+  ///     calling code can access the received metadata through the
+  ///     \a ClientContext.
+  void ReadInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.RecvInitialMetadata(context_);
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Read(R* msg, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    read_ops_.set_output_tag(tag);
+    if (!context_->initial_metadata_received_) {
+      read_ops_.RecvInitialMetadata(context_);
+    }
+    read_ops_.RecvMessage(msg);
+    call_.PerformOps(&read_ops_);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible initial and trailing metadata received from the server.
+  void Finish(::grpc::Status* status, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    finish_ops_.set_output_tag(tag);
+    if (!context_->initial_metadata_received_) {
+      finish_ops_.RecvInitialMetadata(context_);
+    }
+    finish_ops_.ClientRecvStatus(context_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  friend class internal::ClientAsyncReaderFactory<R>;
+  template <class W>
+  ClientAsyncReader(::grpc::internal::Call call,
+                    ::grpc_impl::ClientContext* context, const W& request,
+                    bool start, void* tag)
+      : context_(context), call_(call), started_(start) {
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
+    init_ops_.ClientSendClose();
+    if (start) {
+      StartCallInternal(tag);
+    } else {
+      GPR_CODEGEN_ASSERT(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    init_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                  context_->initial_metadata_flags());
+    init_ops_.set_output_tag(tag);
+    call_.PerformOps(&init_ops_);
+  }
+
+  ::grpc_impl::ClientContext* context_;
+  ::grpc::internal::Call call_;
+  bool started_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpClientSendClose>
+      init_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpRecvMessage<R>>
+      read_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+};
+
+/// Common interface for client side asynchronous writing.
+template <class W>
+class ClientAsyncWriterInterface
+    : public internal::ClientAsyncStreamingInterface,
+      public internal::AsyncWriterInterface<W> {
+ public:
+  /// Signal the client is done with the writes (half-close the client stream).
+  /// Thread-safe with respect to \a AsyncReaderInterface::Read
+  ///
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WritesDone(void* tag) = 0;
+};
+
+namespace internal {
+template <class W>
+class ClientAsyncWriterFactory {
+ public:
+  /// Create a stream object.
+  /// Start the RPC if \a start is set
+  /// \a tag will be notified on \a cq when the call has been started (i.e.
+  /// intitial metadata sent) and \a request has been written out.
+  /// If \a start is not set, \a tag must be nullptr and the actual call
+  /// must be initiated by StartCall
+  /// Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  /// \a response will be filled in with the single expected response
+  /// message from the server upon a successful call to the \a Finish
+  /// method of this instance.
+  template <class R>
+  static ClientAsyncWriter<W>* Create(::grpc::ChannelInterface* channel,
+                                      ::grpc_impl::CompletionQueue* cq,
+                                      const ::grpc::internal::RpcMethod& method,
+                                      ::grpc_impl::ClientContext* context,
+                                      R* response, bool start, void* tag) {
+    ::grpc::internal::Call call = channel->CreateCall(method, context, cq);
+    return new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncWriter<W>)))
+        ClientAsyncWriter<W>(call, context, response, start, tag);
+  }
+};
+}  // namespace internal
+
+/// Async API on the client side for doing client-streaming RPCs,
+/// where the outgoing message stream going to the server contains
+/// messages of type \a W.
+template <class W>
+class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncWriter));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void StartCall(void* tag) override {
+    GPR_CODEGEN_ASSERT(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method for
+  /// semantics.
+  ///
+  /// Side effect:
+  ///   - upon receiving initial metadata from the server, the \a ClientContext
+  ///     associated with this call is updated, and the calling code can access
+  ///     the received metadata through the \a ClientContext.
+  void ReadInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.RecvInitialMetadata(context_);
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Write(const W& msg, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void Write(const W& msg, ::grpc::WriteOptions options, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void WritesDone(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    write_ops_.ClientSendClose();
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible initial and trailing metadata received from the server.
+  ///   - attempts to fill in the \a response parameter passed to this class's
+  ///     constructor with the server's response message.
+  void Finish(::grpc::Status* status, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    finish_ops_.set_output_tag(tag);
+    if (!context_->initial_metadata_received_) {
+      finish_ops_.RecvInitialMetadata(context_);
+    }
+    finish_ops_.ClientRecvStatus(context_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  friend class internal::ClientAsyncWriterFactory<W>;
+  template <class R>
+  ClientAsyncWriter(::grpc::internal::Call call,
+                    ::grpc_impl::ClientContext* context, R* response,
+                    bool start, void* tag)
+      : context_(context), call_(call), started_(start) {
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+    if (start) {
+      StartCallInternal(tag);
+    } else {
+      GPR_CODEGEN_ASSERT(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    // if corked bit is set in context, we just keep the initial metadata
+    // buffered up to coalesce with later message send. No op is performed.
+    if (!context_->initial_metadata_corked_) {
+      write_ops_.set_output_tag(tag);
+      call_.PerformOps(&write_ops_);
+    }
+  }
+
+  ::grpc_impl::ClientContext* context_;
+  ::grpc::internal::Call call_;
+  bool started_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpGenericRecvMessage,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+};
+
+/// Async client-side interface for bi-directional streaming,
+/// where the client-to-server message stream has messages of type \a W,
+/// and the server-to-client message stream has messages of type \a R.
+template <class W, class R>
+class ClientAsyncReaderWriterInterface
+    : public internal::ClientAsyncStreamingInterface,
+      public internal::AsyncWriterInterface<W>,
+      public internal::AsyncReaderInterface<R> {
+ public:
+  /// Signal the client is done with the writes (half-close the client stream).
+  /// Thread-safe with respect to \a AsyncReaderInterface::Read
+  ///
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WritesDone(void* tag) = 0;
+};
+
+namespace internal {
+template <class W, class R>
+class ClientAsyncReaderWriterFactory {
+ public:
+  /// Create a stream object.
+  /// Start the RPC request if \a start is set.
+  /// \a tag will be notified on \a cq when the call has been started (i.e.
+  /// intitial metadata sent). If \a start is not set, \a tag must be
+  /// nullptr and the actual call must be initiated by StartCall
+  /// Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  static ClientAsyncReaderWriter<W, R>* Create(
+      ::grpc::ChannelInterface* channel, ::grpc_impl::CompletionQueue* cq,
+      const ::grpc::internal::RpcMethod& method,
+      ::grpc_impl::ClientContext* context, bool start, void* tag) {
+    ::grpc::internal::Call call = channel->CreateCall(method, context, cq);
+
+    return new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncReaderWriter<W, R>)))
+        ClientAsyncReaderWriter<W, R>(call, context, start, tag);
+  }
+};
+}  // namespace internal
+
+/// Async client-side interface for bi-directional streaming,
+/// where the outgoing message stream going to the server
+/// has messages of type \a W,  and the incoming message stream coming
+/// from the server has messages of type \a R.
+template <class W, class R>
+class ClientAsyncReaderWriter final
+    : public ClientAsyncReaderWriterInterface<W, R> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncReaderWriter));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void StartCall(void* tag) override {
+    GPR_CODEGEN_ASSERT(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method
+  /// for semantics of this method.
+  ///
+  /// Side effect:
+  ///   - upon receiving initial metadata from the server, the \a ClientContext
+  ///     is updated with it, and then the receiving initial metadata can
+  ///     be accessed through this \a ClientContext.
+  void ReadInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.RecvInitialMetadata(context_);
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Read(R* msg, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    read_ops_.set_output_tag(tag);
+    if (!context_->initial_metadata_received_) {
+      read_ops_.RecvInitialMetadata(context_);
+    }
+    read_ops_.RecvMessage(msg);
+    call_.PerformOps(&read_ops_);
+  }
+
+  void Write(const W& msg, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void Write(const W& msg, ::grpc::WriteOptions options, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void WritesDone(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    write_ops_.set_output_tag(tag);
+    write_ops_.ClientSendClose();
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ClientAsyncStreamingInterface.Finish method for semantics.
+  /// Side effect
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible initial and trailing metadata sent from the server.
+  void Finish(::grpc::Status* status, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    finish_ops_.set_output_tag(tag);
+    if (!context_->initial_metadata_received_) {
+      finish_ops_.RecvInitialMetadata(context_);
+    }
+    finish_ops_.ClientRecvStatus(context_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  friend class internal::ClientAsyncReaderWriterFactory<W, R>;
+  ClientAsyncReaderWriter(::grpc::internal::Call call,
+                          ::grpc_impl::ClientContext* context, bool start,
+                          void* tag)
+      : context_(context), call_(call), started_(start) {
+    if (start) {
+      StartCallInternal(tag);
+    } else {
+      GPR_CODEGEN_ASSERT(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    // if corked bit is set in context, we just keep the initial metadata
+    // buffered up to coalesce with later message send. No op is performed.
+    if (!context_->initial_metadata_corked_) {
+      write_ops_.set_output_tag(tag);
+      call_.PerformOps(&write_ops_);
+    }
+  }
+
+  ::grpc_impl::ClientContext* context_;
+  ::grpc::internal::Call call_;
+  bool started_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpRecvMessage<R>>
+      read_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+};
+
+template <class W, class R>
+class ServerAsyncReaderInterface
+    : public ::grpc::internal::ServerAsyncStreamingInterface,
+      public internal::AsyncReaderInterface<R> {
+ public:
+  /// Indicate that the stream is to be finished with a certain status code
+  /// and also send out \a msg response to the client.
+  /// Request notification for when the server has sent the response and the
+  /// appropriate signals to the client to end the call.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// It is appropriate to call this method when:
+  ///   * all messages from the client have been received (either known
+  ///     implictly, or explicitly because a previous
+  ///     \a AsyncReaderInterface::Read operation with a non-ok result,
+  ///     e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false').
+  ///
+  /// This operation will end when the server has finished sending out initial
+  /// metadata (if not sent already), response message, and status, or if
+  /// some failure occurred when trying to do so.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg or \a status, so it
+  /// is safe to deallocate once Finish returns.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of this call.
+  /// \param[in] msg To be sent to the client as the response for this call.
+  virtual void Finish(const W& msg, const ::grpc::Status& status,
+                      void* tag) = 0;
+
+  /// Indicate that the stream is to be finished with a certain
+  /// non-OK status code.
+  /// Request notification for when the server has sent the appropriate
+  /// signals to the client to end the call.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// This call is meant to end the call with some error, and can be called at
+  /// any point that the server would like to "fail" the call (though note
+  /// this shouldn't be called concurrently with any other "sending" call, like
+  /// \a AsyncWriterInterface::Write).
+  ///
+  /// This operation will end when the server has finished sending out initial
+  /// metadata (if not sent already), and status, or if some failure occurred
+  /// when trying to do so.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once FinishWithError returns.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of this call.
+  ///     - Note: \a status must have a non-OK code.
+  virtual void FinishWithError(const ::grpc::Status& status, void* tag) = 0;
+};
+
+/// Async server-side API for doing client-streaming RPCs,
+/// where the incoming message stream from the client has messages of type \a R,
+/// and the single response message sent from the server is type \a W.
+template <class W, class R>
+class ServerAsyncReader final : public ServerAsyncReaderInterface<W, R> {
+ public:
+  explicit ServerAsyncReader(::grpc_impl::ServerContext* ctx)
+      : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
+
+  /// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - The initial metadata that will be sent to the client from this op will
+  ///     be taken from the \a ServerContext associated with the call.
+  void SendInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                  ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      meta_ops_.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Read(R* msg, void* tag) override {
+    read_ops_.set_output_tag(tag);
+    read_ops_.RecvMessage(msg);
+    call_.PerformOps(&read_ops_);
+  }
+
+  /// See the \a ServerAsyncReaderInterface.Read method for semantics
+  ///
+  /// Side effect:
+  ///   - also sends initial metadata if not alreay sent.
+  ///   - uses the \a ServerContext associated with this call to send possible
+  ///     initial and trailing metadata.
+  ///
+  /// Note: \a msg is not sent if \a status has a non-OK code.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg and \a status, so it
+  /// is safe to deallocate once Finish returns.
+  void Finish(const W& msg, const ::grpc::Status& status, void* tag) override {
+    finish_ops_.set_output_tag(tag);
+    if (!ctx_->sent_initial_metadata_) {
+      finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                      ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        finish_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    // The response is dropped if the status is not OK.
+    if (status.ok()) {
+      finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_,
+                                   finish_ops_.SendMessage(msg));
+    } else {
+      finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    }
+    call_.PerformOps(&finish_ops_);
+  }
+
+  /// See the \a ServerAsyncReaderInterface.Read method for semantics
+  ///
+  /// Side effect:
+  ///   - also sends initial metadata if not alreay sent.
+  ///   - uses the \a ServerContext associated with this call to send possible
+  ///     initial and trailing metadata.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once FinishWithError returns.
+  void FinishWithError(const ::grpc::Status& status, void* tag) override {
+    GPR_CODEGEN_ASSERT(!status.ok());
+    finish_ops_.set_output_tag(tag);
+    if (!ctx_->sent_initial_metadata_) {
+      finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                      ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        finish_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  void BindCall(::grpc::internal::Call* call) override { call_ = *call; }
+
+  ::grpc::internal::Call call_;
+  ::grpc_impl::ServerContext* ctx_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> read_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpServerSendStatus>
+      finish_ops_;
+};
+
+template <class W>
+class ServerAsyncWriterInterface
+    : public ::grpc::internal::ServerAsyncStreamingInterface,
+      public internal::AsyncWriterInterface<W> {
+ public:
+  /// Indicate that the stream is to be finished with a certain status code.
+  /// Request notification for when the server has sent the appropriate
+  /// signals to the client to end the call.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// It is appropriate to call this method when either:
+  ///   * all messages from the client have been received (either known
+  ///     implictly, or explicitly because a previous \a
+  ///     AsyncReaderInterface::Read operation with a non-ok
+  ///     result (e.g., cq->Next(&read_tag, &ok) filled in 'ok' with 'false'.
+  ///   * it is desired to end the call early with some non-OK status code.
+  ///
+  /// This operation will end when the server has finished sending out initial
+  /// metadata (if not sent already), response message, and status, or if
+  /// some failure occurred when trying to do so.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once Finish returns.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of this call.
+  virtual void Finish(const ::grpc::Status& status, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with trailing metadata which
+  /// contains \a status, using WriteOptions options with
+  /// identifying tag \a tag.
+  ///
+  /// WriteAndFinish is equivalent of performing WriteLast and Finish
+  /// in a single step.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg and \a status, so it
+  /// is safe to deallocate once WriteAndFinish returns.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] status The Status that server returns to client.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WriteAndFinish(const W& msg, ::grpc::WriteOptions options,
+                              const ::grpc::Status& status, void* tag) = 0;
+};
+
+/// Async server-side API for doing server streaming RPCs,
+/// where the outgoing message stream from the server has messages of type \a W.
+template <class W>
+class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
+ public:
+  explicit ServerAsyncWriter(::grpc_impl::ServerContext* ctx)
+      : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
+
+  /// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - The initial metadata that will be sent to the client from this op will
+  ///     be taken from the \a ServerContext associated with the call.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  void SendInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                  ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      meta_ops_.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Write(const W& msg, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void Write(const W& msg, ::grpc::WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+
+    EnsureInitialMetadataSent(&write_ops_);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ServerAsyncWriterInterface.WriteAndFinish method for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - the \a ServerContext associated with this call is used
+  ///     for sending trailing (and initial) metadata to the client.
+  ///
+  /// Note: \a status must have an OK code.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg and \a status, so it
+  /// is safe to deallocate once WriteAndFinish returns.
+  void WriteAndFinish(const W& msg, ::grpc::WriteOptions options,
+                      const ::grpc::Status& status, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    options.set_buffer_hint();
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    write_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ServerAsyncWriterInterface.Finish method for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - the \a ServerContext associated with this call is used for sending
+  ///     trailing (and initial if not already sent) metadata to the client.
+  ///
+  /// Note: there are no restrictions are the code of
+  /// \a status,it may be non-OK
+  ///
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once Finish returns.
+  void Finish(const ::grpc::Status& status, void* tag) override {
+    finish_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&finish_ops_);
+    finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  void BindCall(::grpc::internal::Call* call) override { call_ = *call; }
+
+  template <class T>
+  void EnsureInitialMetadataSent(T* ops) {
+    if (!ctx_->sent_initial_metadata_) {
+      ops->SendInitialMetadata(&ctx_->initial_metadata_,
+                               ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ops->set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+  }
+
+  ::grpc::internal::Call call_;
+  ::grpc_impl::ServerContext* ctx_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpServerSendStatus>
+      write_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpServerSendStatus>
+      finish_ops_;
+};
+
+/// Server-side interface for asynchronous bi-directional streaming.
+template <class W, class R>
+class ServerAsyncReaderWriterInterface
+    : public ::grpc::internal::ServerAsyncStreamingInterface,
+      public internal::AsyncWriterInterface<W>,
+      public internal::AsyncReaderInterface<R> {
+ public:
+  /// Indicate that the stream is to be finished with a certain status code.
+  /// Request notification for when the server has sent the appropriate
+  /// signals to the client to end the call.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// It is appropriate to call this method when either:
+  ///   * all messages from the client have been received (either known
+  ///     implictly, or explicitly because a previous \a
+  ///     AsyncReaderInterface::Read operation
+  ///     with a non-ok result (e.g., cq->Next(&read_tag, &ok) filled in 'ok'
+  ///     with 'false'.
+  ///   * it is desired to end the call early with some non-OK status code.
+  ///
+  /// This operation will end when the server has finished sending out initial
+  /// metadata (if not sent already), response message, and status, or if some
+  /// failure occurred when trying to do so.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once Finish returns.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of this call.
+  virtual void Finish(const ::grpc::Status& status, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with trailing metadata which
+  /// contains \a status, using WriteOptions options with
+  /// identifying tag \a tag.
+  ///
+  /// WriteAndFinish is equivalent of performing WriteLast and Finish in a
+  /// single step.
+  ///
+  /// gRPC doesn't take ownership or a reference to \a msg and \a status, so it
+  /// is safe to deallocate once WriteAndFinish returns.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] status The Status that server returns to client.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WriteAndFinish(const W& msg, ::grpc::WriteOptions options,
+                              const ::grpc::Status& status, void* tag) = 0;
+};
+
+/// Async server-side API for doing bidirectional streaming RPCs,
+/// where the incoming message stream coming from the client has messages of
+/// type \a R, and the outgoing message stream coming from the server has
+/// messages of type \a W.
+template <class W, class R>
+class ServerAsyncReaderWriter final
+    : public ServerAsyncReaderWriterInterface<W, R> {
+ public:
+  explicit ServerAsyncReaderWriter(::grpc_impl::ServerContext* ctx)
+      : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
+
+  /// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - The initial metadata that will be sent to the client from this op will
+  ///     be taken from the \a ServerContext associated with the call.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  void SendInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    meta_ops_.set_output_tag(tag);
+    meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                  ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      meta_ops_.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_.PerformOps(&meta_ops_);
+  }
+
+  void Read(R* msg, void* tag) override {
+    read_ops_.set_output_tag(tag);
+    read_ops_.RecvMessage(msg);
+    call_.PerformOps(&read_ops_);
+  }
+
+  void Write(const W& msg, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void Write(const W& msg, ::grpc::WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+    EnsureInitialMetadataSent(&write_ops_);
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ServerAsyncReaderWriterInterface.WriteAndFinish
+  /// method for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - the \a ServerContext associated with this call is used
+  ///     for sending trailing (and initial) metadata to the client.
+  ///
+  /// Note: \a status must have an OK code.
+  //
+  /// gRPC doesn't take ownership or a reference to \a msg and \a status, so it
+  /// is safe to deallocate once WriteAndFinish returns.
+  void WriteAndFinish(const W& msg, ::grpc::WriteOptions options,
+                      const ::grpc::Status& status, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    options.set_buffer_hint();
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    write_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&write_ops_);
+  }
+
+  /// See the \a ServerAsyncReaderWriterInterface.Finish method for semantics.
+  ///
+  /// Implicit input parameter:
+  ///   - the \a ServerContext associated with this call is used for sending
+  ///     trailing (and initial if not already sent) metadata to the client.
+  ///
+  /// Note: there are no restrictions are the code of \a status,
+  /// it may be non-OK
+  //
+  /// gRPC doesn't take ownership or a reference to \a status, so it is safe to
+  /// to deallocate once Finish returns.
+  void Finish(const ::grpc::Status& status, void* tag) override {
+    finish_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&finish_ops_);
+
+    finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&finish_ops_);
+  }
+
+ private:
+  friend class ::grpc_impl::Server;
+
+  void BindCall(::grpc::internal::Call* call) override { call_ = *call; }
+
+  template <class T>
+  void EnsureInitialMetadataSent(T* ops) {
+    if (!ctx_->sent_initial_metadata_) {
+      ops->SendInitialMetadata(&ctx_->initial_metadata_,
+                               ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ops->set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+  }
+
+  ::grpc::internal::Call call_;
+  ::grpc_impl::ServerContext* ctx_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+      meta_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> read_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpServerSendStatus>
+      write_ops_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpServerSendStatus>
+      finish_ops_;
+};
+
+}  // namespace grpc_impl
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_STREAM_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call.h
new file mode 100644
index 0000000..cbbe701
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
+
+#include <grpcpp/impl/codegen/async_unary_call_impl.h>
+
+namespace grpc {
+
+template <class R>
+using ClientAsyncResponseReaderInterface =
+    grpc_impl::ClientAsyncResponseReaderInterface<R>;
+
+template <class R>
+using ClientAsyncResponseReader = grpc_impl::ClientAsyncResponseReader<R>;
+
+template <class W>
+using ServerAsyncResponseWriter = ::grpc_impl::ServerAsyncResponseWriter<W>;
+
+namespace internal {
+
+template <class R>
+using ClientAsyncResponseReaderFactory =
+    ::grpc_impl::internal::ClientAsyncResponseReaderFactory<R>;
+
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call_impl.h
new file mode 100644
index 0000000..e7a2101
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/async_unary_call_impl.h	
@@ -0,0 +1,314 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/client_context_impl.h>
+#include <grpcpp/impl/codegen/server_context_impl.h>
+#include <grpcpp/impl/codegen/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+/// An interface relevant for async client side unary RPCs (which send
+/// one request message to a server and receive one response message).
+template <class R>
+class ClientAsyncResponseReaderInterface {
+ public:
+  virtual ~ClientAsyncResponseReaderInterface() {}
+
+  /// Start the call that was set up by the constructor, but only if the
+  /// constructor was invoked through the "Prepare" API which doesn't actually
+  /// start the call
+  virtual void StartCall() = 0;
+
+  /// Request notification of the reading of initial metadata. Completion
+  /// will be notified by \a tag on the associated completion queue.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a Finish method.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  virtual void ReadInitialMetadata(void* tag) = 0;
+
+  /// Request to receive the server's response \a msg and final \a status for
+  /// the call, and to notify \a tag on this call's completion queue when
+  /// finished.
+  ///
+  /// This function will return when either:
+  /// - when the server's response message and status have been received.
+  /// - when the server has returned a non-OK status (no message expected in
+  ///   this case).
+  /// - when the call failed for some reason and the library generated a
+  ///   non-OK status.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[out] status To be updated with the operation status.
+  /// \param[out] msg To be filled in with the server's response message.
+  virtual void Finish(R* msg, ::grpc::Status* status, void* tag) = 0;
+};
+
+namespace internal {
+template <class R>
+class ClientAsyncResponseReaderFactory {
+ public:
+  /// Start a call and write the request out if \a start is set.
+  /// \a tag will be notified on \a cq when the call has been started (i.e.
+  /// intitial metadata sent) and \a request has been written out.
+  /// If \a start is not set, the actual call must be initiated by StartCall
+  /// Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  template <class W>
+  static ClientAsyncResponseReader<R>* Create(
+      ::grpc::ChannelInterface* channel, ::grpc_impl::CompletionQueue* cq,
+      const ::grpc::internal::RpcMethod& method,
+      ::grpc_impl::ClientContext* context, const W& request, bool start) {
+    ::grpc::internal::Call call = channel->CreateCall(method, context, cq);
+    return new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientAsyncResponseReader<R>)))
+        ClientAsyncResponseReader<R>(call, context, request, start);
+  }
+};
+}  // namespace internal
+
+/// Async API for client-side unary RPCs, where the message response
+/// received from the server is of type \a R.
+template <class R>
+class ClientAsyncResponseReader final
+    : public ClientAsyncResponseReaderInterface<R> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientAsyncResponseReader));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void StartCall() override {
+    GPR_CODEGEN_ASSERT(!started_);
+    started_ = true;
+    StartCallInternal();
+  }
+
+  /// See \a ClientAsyncResponseReaderInterface::ReadInitialMetadata for
+  /// semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible initial and trailing metadata sent from the server.
+  void ReadInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    single_buf.set_output_tag(tag);
+    single_buf.RecvInitialMetadata(context_);
+    call_.PerformOps(&single_buf);
+    initial_metadata_read_ = true;
+  }
+
+  /// See \a ClientAysncResponseReaderInterface::Finish for semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible initial and trailing metadata sent from the server.
+  void Finish(R* msg, ::grpc::Status* status, void* tag) override {
+    GPR_CODEGEN_ASSERT(started_);
+    if (initial_metadata_read_) {
+      finish_buf.set_output_tag(tag);
+      finish_buf.RecvMessage(msg);
+      finish_buf.AllowNoMessage();
+      finish_buf.ClientRecvStatus(context_, status);
+      call_.PerformOps(&finish_buf);
+    } else {
+      single_buf.set_output_tag(tag);
+      single_buf.RecvInitialMetadata(context_);
+      single_buf.RecvMessage(msg);
+      single_buf.AllowNoMessage();
+      single_buf.ClientRecvStatus(context_, status);
+      call_.PerformOps(&single_buf);
+    }
+  }
+
+ private:
+  friend class internal::ClientAsyncResponseReaderFactory<R>;
+  ::grpc_impl::ClientContext* const context_;
+  ::grpc::internal::Call call_;
+  bool started_;
+  bool initial_metadata_read_ = false;
+
+  template <class W>
+  ClientAsyncResponseReader(::grpc::internal::Call call,
+                            ::grpc_impl::ClientContext* context,
+                            const W& request, bool start)
+      : context_(context), call_(call), started_(start) {
+    // Bind the metadata at time of StartCallInternal but set up the rest here
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(single_buf.SendMessage(request).ok());
+    single_buf.ClientSendClose();
+    if (start) StartCallInternal();
+  }
+
+  void StartCallInternal() {
+    single_buf.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+  }
+
+  // disable operator new
+  static void* operator new(std::size_t size);
+  static void* operator new(std::size_t /*size*/, void* p) { return p; }
+
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpClientSendClose,
+                              ::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpRecvMessage<R>,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      single_buf;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      finish_buf;
+};
+
+/// Async server-side API for handling unary calls, where the single
+/// response message sent to the client is of type \a W.
+template <class W>
+class ServerAsyncResponseWriter final
+    : public ::grpc::internal::ServerAsyncStreamingInterface {
+ public:
+  explicit ServerAsyncResponseWriter(::grpc_impl::ServerContext* ctx)
+      : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
+
+  /// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
+  ///
+  /// Side effect:
+  ///   The initial metadata that will be sent to the client from this op will
+  ///   be taken from the \a ServerContext associated with the call.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  void SendInitialMetadata(void* tag) override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    meta_buf_.set_output_tag(tag);
+    meta_buf_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                  ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      meta_buf_.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_.PerformOps(&meta_buf_);
+  }
+
+  /// Indicate that the stream is to be finished and request notification
+  /// when the server has sent the appropriate signals to the client to
+  /// end the call. Should not be used concurrently with other operations.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of the call.
+  /// \param[in] msg Message to be sent to the client.
+  ///
+  /// Side effect:
+  ///   - also sends initial metadata if not already sent (using the
+  ///     \a ServerContext associated with this call).
+  ///
+  /// Note: if \a status has a non-OK code, then \a msg will not be sent,
+  /// and the client will receive only the status with possible trailing
+  /// metadata.
+  void Finish(const W& msg, const ::grpc::Status& status, void* tag) {
+    finish_buf_.set_output_tag(tag);
+    finish_buf_.set_core_cq_tag(&finish_buf_);
+    if (!ctx_->sent_initial_metadata_) {
+      finish_buf_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                      ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        finish_buf_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    // The response is dropped if the status is not OK.
+    if (status.ok()) {
+      finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_,
+                                   finish_buf_.SendMessage(msg));
+    } else {
+      finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    }
+    call_.PerformOps(&finish_buf_);
+  }
+
+  /// Indicate that the stream is to be finished with a non-OK status,
+  /// and request notification for when the server has finished sending the
+  /// appropriate signals to the client to end the call.
+  /// Should not be used concurrently with other operations.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  /// \param[in] status To be sent to the client as the result of the call.
+  ///   - Note: \a status must have a non-OK code.
+  ///
+  /// Side effect:
+  ///   - also sends initial metadata if not already sent (using the
+  ///     \a ServerContext associated with this call).
+  void FinishWithError(const ::grpc::Status& status, void* tag) {
+    GPR_CODEGEN_ASSERT(!status.ok());
+    finish_buf_.set_output_tag(tag);
+    if (!ctx_->sent_initial_metadata_) {
+      finish_buf_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                      ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        finish_buf_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_, status);
+    call_.PerformOps(&finish_buf_);
+  }
+
+ private:
+  void BindCall(::grpc::internal::Call* call) override { call_ = *call; }
+
+  ::grpc::internal::Call call_;
+  ::grpc_impl::ServerContext* ctx_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+      meta_buf_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage,
+                              ::grpc::internal::CallOpServerSendStatus>
+      finish_buf_;
+};
+
+}  // namespace grpc_impl
+
+namespace std {
+template <class R>
+class default_delete<::grpc_impl::ClientAsyncResponseReader<R>> {
+ public:
+  void operator()(void* /*p*/) {}
+};
+template <class R>
+class default_delete<::grpc_impl::ClientAsyncResponseReaderInterface<R>> {
+ public:
+  void operator()(void* /*p*/) {}
+};
+}  // namespace std
+
+#endif  // GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/byte_buffer.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/byte_buffer.h
new file mode 100644
index 0000000..54886ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/byte_buffer.h	
@@ -0,0 +1,233 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_BYTE_BUFFER_H
+#define GRPCPP_IMPL_CODEGEN_BYTE_BUFFER_H
+
+#include <grpc/impl/codegen/byte_buffer.h>
+
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/serialization_traits.h>
+#include <grpcpp/impl/codegen/slice.h>
+#include <grpcpp/impl/codegen/status.h>
+
+#include <vector>
+
+namespace grpc_impl {
+namespace internal {
+
+template <class RequestType, class ResponseType>
+class CallbackUnaryHandler;
+template <class RequestType, class ResponseType>
+class CallbackServerStreamingHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class RpcMethodHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+template <::grpc::StatusCode code>
+class ErrorMethodHandler;
+
+}  // namespace internal
+}  // namespace grpc_impl
+
+namespace grpc {
+
+class ServerInterface;
+class ByteBuffer;
+class ServerInterface;
+
+namespace internal {
+class CallOpSendMessage;
+template <class R>
+class CallOpRecvMessage;
+class CallOpGenericRecvMessage;
+class ExternalConnectionAcceptorImpl;
+template <class R>
+class DeserializeFuncType;
+class GrpcByteBufferPeer;
+
+}  // namespace internal
+/// A sequence of bytes.
+class ByteBuffer final {
+ public:
+  /// Constuct an empty buffer.
+  ByteBuffer() : buffer_(nullptr) {}
+
+  /// Construct buffer from \a slices, of which there are \a nslices.
+  ByteBuffer(const Slice* slices, size_t nslices) {
+    // The following assertions check that the representation of a grpc::Slice
+    // is identical to that of a grpc_slice:  it has a grpc_slice field, and
+    // nothing else.
+    static_assert(std::is_same<decltype(slices[0].slice_), grpc_slice>::value,
+                  "Slice must have same representation as grpc_slice");
+    static_assert(sizeof(Slice) == sizeof(grpc_slice),
+                  "Slice must have same representation as grpc_slice");
+    // The following assertions check that the representation of a ByteBuffer is
+    // identical to grpc_byte_buffer*:  it has a grpc_byte_buffer* field,
+    // and nothing else.
+    static_assert(std::is_same<decltype(buffer_), grpc_byte_buffer*>::value,
+                  "ByteBuffer must have same representation as "
+                  "grpc_byte_buffer*");
+    static_assert(sizeof(ByteBuffer) == sizeof(grpc_byte_buffer*),
+                  "ByteBuffer must have same representation as "
+                  "grpc_byte_buffer*");
+    // The const_cast is legal if grpc_raw_byte_buffer_create() does no more
+    // than its advertised side effect of increasing the reference count of the
+    // slices it processes, and such an increase does not affect the semantics
+    // seen by the caller of this constructor.
+    buffer_ = g_core_codegen_interface->grpc_raw_byte_buffer_create(
+        reinterpret_cast<grpc_slice*>(const_cast<Slice*>(slices)), nslices);
+  }
+
+  /// Constuct a byte buffer by referencing elements of existing buffer
+  /// \a buf. Wrapper of core function grpc_byte_buffer_copy . This is not
+  /// a deep copy; it is just a referencing. As a result, its performance is
+  /// size-independent.
+  ByteBuffer(const ByteBuffer& buf) : buffer_(nullptr) { operator=(buf); }
+
+  ~ByteBuffer() {
+    if (buffer_) {
+      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+    }
+  }
+
+  /// Wrapper of core function grpc_byte_buffer_copy . This is not
+  /// a deep copy; it is just a referencing. As a result, its performance is
+  /// size-independent.
+  ByteBuffer& operator=(const ByteBuffer& buf) {
+    if (this != &buf) {
+      Clear();  // first remove existing data
+    }
+    if (buf.buffer_) {
+      // then copy
+      buffer_ = g_core_codegen_interface->grpc_byte_buffer_copy(buf.buffer_);
+    }
+    return *this;
+  }
+
+  /// Dump (read) the buffer contents into \a slices.
+  Status Dump(std::vector<Slice>* slices) const;
+
+  /// Remove all data.
+  void Clear() {
+    if (buffer_) {
+      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+      buffer_ = nullptr;
+    }
+  }
+
+  /// Make a duplicate copy of the internals of this byte
+  /// buffer so that we have our own owned version of it.
+  /// bbuf.Duplicate(); is equivalent to bbuf=bbuf; but is actually readable.
+  /// This is not a deep copy; it is a referencing and its performance
+  /// is size-independent.
+  void Duplicate() {
+    buffer_ = g_core_codegen_interface->grpc_byte_buffer_copy(buffer_);
+  }
+
+  /// Forget underlying byte buffer without destroying
+  /// Use this only for un-owned byte buffers
+  void Release() { buffer_ = nullptr; }
+
+  /// Buffer size in bytes.
+  size_t Length() const {
+    return buffer_ == nullptr
+               ? 0
+               : g_core_codegen_interface->grpc_byte_buffer_length(buffer_);
+  }
+
+  /// Swap the state of *this and *other.
+  void Swap(ByteBuffer* other) {
+    grpc_byte_buffer* tmp = other->buffer_;
+    other->buffer_ = buffer_;
+    buffer_ = tmp;
+  }
+
+  /// Is this ByteBuffer valid?
+  bool Valid() const { return (buffer_ != nullptr); }
+
+ private:
+  friend class SerializationTraits<ByteBuffer, void>;
+  friend class ServerInterface;
+  friend class internal::CallOpSendMessage;
+  template <class R>
+  friend class internal::CallOpRecvMessage;
+  friend class internal::CallOpGenericRecvMessage;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::RpcMethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ServerStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackUnaryHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackServerStreamingHandler;
+  template <StatusCode code>
+  friend class ::grpc_impl::internal::ErrorMethodHandler;
+  template <class R>
+  friend class internal::DeserializeFuncType;
+  friend class ProtoBufferReader;
+  friend class ProtoBufferWriter;
+  friend class internal::GrpcByteBufferPeer;
+  friend class internal::ExternalConnectionAcceptorImpl;
+
+  grpc_byte_buffer* buffer_;
+
+  // takes ownership
+  void set_buffer(grpc_byte_buffer* buf) {
+    if (buffer_) {
+      Clear();
+    }
+    buffer_ = buf;
+  }
+
+  grpc_byte_buffer* c_buffer() { return buffer_; }
+  grpc_byte_buffer** c_buffer_ptr() { return &buffer_; }
+
+  class ByteBufferPointer {
+   public:
+    ByteBufferPointer(const ByteBuffer* b)
+        : bbuf_(const_cast<ByteBuffer*>(b)) {}
+    operator ByteBuffer*() { return bbuf_; }
+    operator grpc_byte_buffer*() { return bbuf_->buffer_; }
+    operator grpc_byte_buffer**() { return &bbuf_->buffer_; }
+
+   private:
+    ByteBuffer* bbuf_;
+  };
+  ByteBufferPointer bbuf_ptr() const { return ByteBufferPointer(this); }
+};
+
+template <>
+class SerializationTraits<ByteBuffer, void> {
+ public:
+  static Status Deserialize(ByteBuffer* byte_buffer, ByteBuffer* dest) {
+    dest->set_buffer(byte_buffer->buffer_);
+    return Status::OK;
+  }
+  static Status Serialize(const ByteBuffer& source, ByteBuffer* buffer,
+                          bool* own_buffer) {
+    *buffer = source;
+    *own_buffer = true;
+    return g_core_codegen_interface->ok();
+  }
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_BYTE_BUFFER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call.h
new file mode 100644
index 0000000..eefa4a7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPCPP_IMPL_CODEGEN_CALL_H
+#define GRPCPP_IMPL_CODEGEN_CALL_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/call_hook.h>
+
+namespace grpc_impl {
+class CompletionQueue;
+}
+
+namespace grpc {
+namespace experimental {
+class ClientRpcInfo;
+class ServerRpcInfo;
+}  // namespace experimental
+namespace internal {
+class CallHook;
+class CallOpSetInterface;
+
+/// Straightforward wrapping of the C call object
+class Call final {
+ public:
+  Call()
+      : call_hook_(nullptr),
+        cq_(nullptr),
+        call_(nullptr),
+        max_receive_message_size_(-1) {}
+  /** call is owned by the caller */
+  Call(grpc_call* call, CallHook* call_hook, ::grpc_impl::CompletionQueue* cq)
+      : call_hook_(call_hook),
+        cq_(cq),
+        call_(call),
+        max_receive_message_size_(-1) {}
+
+  Call(grpc_call* call, CallHook* call_hook, ::grpc_impl::CompletionQueue* cq,
+       experimental::ClientRpcInfo* rpc_info)
+      : call_hook_(call_hook),
+        cq_(cq),
+        call_(call),
+        max_receive_message_size_(-1),
+        client_rpc_info_(rpc_info) {}
+
+  Call(grpc_call* call, CallHook* call_hook, ::grpc_impl::CompletionQueue* cq,
+       int max_receive_message_size, experimental::ServerRpcInfo* rpc_info)
+      : call_hook_(call_hook),
+        cq_(cq),
+        call_(call),
+        max_receive_message_size_(max_receive_message_size),
+        server_rpc_info_(rpc_info) {}
+
+  void PerformOps(CallOpSetInterface* ops) {
+    call_hook_->PerformOpsOnCall(ops, this);
+  }
+
+  grpc_call* call() const { return call_; }
+  ::grpc_impl::CompletionQueue* cq() const { return cq_; }
+
+  int max_receive_message_size() const { return max_receive_message_size_; }
+
+  experimental::ClientRpcInfo* client_rpc_info() const {
+    return client_rpc_info_;
+  }
+
+  experimental::ServerRpcInfo* server_rpc_info() const {
+    return server_rpc_info_;
+  }
+
+ private:
+  CallHook* call_hook_;
+  ::grpc_impl::CompletionQueue* cq_;
+  grpc_call* call_;
+  int max_receive_message_size_;
+  experimental::ClientRpcInfo* client_rpc_info_ = nullptr;
+  experimental::ServerRpcInfo* server_rpc_info_ = nullptr;
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_hook.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_hook.h
new file mode 100644
index 0000000..4f7d370
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_hook.h	
@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
+#define GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
+
+namespace grpc {
+
+namespace internal {
+class CallOpSetInterface;
+class Call;
+
+/// This is an interface that Channel and Server implement to allow them to hook
+/// performing ops.
+class CallHook {
+ public:
+  virtual ~CallHook() {}
+  virtual void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) = 0;
+};
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CALL_HOOK_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set.h
new file mode 100644
index 0000000..e6d7b90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set.h	
@@ -0,0 +1,1007 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
+#define GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
+
+#include <cstring>
+#include <map>
+#include <memory>
+
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_hook.h>
+#include <grpcpp/impl/codegen/call_op_set_interface.h>
+#include <grpcpp/impl/codegen/client_context_impl.h>
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/intercepted_channel.h>
+#include <grpcpp/impl/codegen/interceptor_common.h>
+#include <grpcpp/impl/codegen/serialization_traits.h>
+#include <grpcpp/impl/codegen/slice.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+
+namespace grpc {
+
+extern CoreCodegenInterface* g_core_codegen_interface;
+
+namespace internal {
+class Call;
+class CallHook;
+
+// TODO(yangg) if the map is changed before we send, the pointers will be a
+// mess. Make sure it does not happen.
+inline grpc_metadata* FillMetadataArray(
+    const std::multimap<grpc::string, grpc::string>& metadata,
+    size_t* metadata_count, const grpc::string& optional_error_details) {
+  *metadata_count = metadata.size() + (optional_error_details.empty() ? 0 : 1);
+  if (*metadata_count == 0) {
+    return nullptr;
+  }
+  grpc_metadata* metadata_array =
+      (grpc_metadata*)(g_core_codegen_interface->gpr_malloc(
+          (*metadata_count) * sizeof(grpc_metadata)));
+  size_t i = 0;
+  for (auto iter = metadata.cbegin(); iter != metadata.cend(); ++iter, ++i) {
+    metadata_array[i].key = SliceReferencingString(iter->first);
+    metadata_array[i].value = SliceReferencingString(iter->second);
+  }
+  if (!optional_error_details.empty()) {
+    metadata_array[i].key =
+        g_core_codegen_interface->grpc_slice_from_static_buffer(
+            kBinaryErrorDetailsKey, sizeof(kBinaryErrorDetailsKey) - 1);
+    metadata_array[i].value = SliceReferencingString(optional_error_details);
+  }
+  return metadata_array;
+}
+}  // namespace internal
+
+/// Per-message write options.
+class WriteOptions {
+ public:
+  WriteOptions() : flags_(0), last_message_(false) {}
+  WriteOptions(const WriteOptions& other)
+      : flags_(other.flags_), last_message_(other.last_message_) {}
+
+  /// Default assignment operator
+  WriteOptions& operator=(const WriteOptions& other) = default;
+
+  /// Clear all flags.
+  inline void Clear() { flags_ = 0; }
+
+  /// Returns raw flags bitset.
+  inline uint32_t flags() const { return flags_; }
+
+  /// Sets flag for the disabling of compression for the next message write.
+  ///
+  /// \sa GRPC_WRITE_NO_COMPRESS
+  inline WriteOptions& set_no_compression() {
+    SetBit(GRPC_WRITE_NO_COMPRESS);
+    return *this;
+  }
+
+  /// Clears flag for the disabling of compression for the next message write.
+  ///
+  /// \sa GRPC_WRITE_NO_COMPRESS
+  inline WriteOptions& clear_no_compression() {
+    ClearBit(GRPC_WRITE_NO_COMPRESS);
+    return *this;
+  }
+
+  /// Get value for the flag indicating whether compression for the next
+  /// message write is forcefully disabled.
+  ///
+  /// \sa GRPC_WRITE_NO_COMPRESS
+  inline bool get_no_compression() const {
+    return GetBit(GRPC_WRITE_NO_COMPRESS);
+  }
+
+  /// Sets flag indicating that the write may be buffered and need not go out on
+  /// the wire immediately.
+  ///
+  /// \sa GRPC_WRITE_BUFFER_HINT
+  inline WriteOptions& set_buffer_hint() {
+    SetBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  /// Clears flag indicating that the write may be buffered and need not go out
+  /// on the wire immediately.
+  ///
+  /// \sa GRPC_WRITE_BUFFER_HINT
+  inline WriteOptions& clear_buffer_hint() {
+    ClearBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  /// Get value for the flag indicating that the write may be buffered and need
+  /// not go out on the wire immediately.
+  ///
+  /// \sa GRPC_WRITE_BUFFER_HINT
+  inline bool get_buffer_hint() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
+
+  /// corked bit: aliases set_buffer_hint currently, with the intent that
+  /// set_buffer_hint will be removed in the future
+  inline WriteOptions& set_corked() {
+    SetBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  inline WriteOptions& clear_corked() {
+    ClearBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  inline bool is_corked() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
+
+  /// last-message bit: indicates this is the last message in a stream
+  /// client-side:  makes Write the equivalent of performing Write, WritesDone
+  /// in a single step
+  /// server-side:  hold the Write until the service handler returns (sync api)
+  /// or until Finish is called (async api)
+  inline WriteOptions& set_last_message() {
+    last_message_ = true;
+    return *this;
+  }
+
+  /// Clears flag indicating that this is the last message in a stream,
+  /// disabling coalescing.
+  inline WriteOptions& clear_last_message() {
+    last_message_ = false;
+    return *this;
+  }
+
+  /// Guarantee that all bytes have been written to the socket before completing
+  /// this write (usually writes are completed when they pass flow control).
+  inline WriteOptions& set_write_through() {
+    SetBit(GRPC_WRITE_THROUGH);
+    return *this;
+  }
+
+  inline bool is_write_through() const { return GetBit(GRPC_WRITE_THROUGH); }
+
+  /// Get value for the flag indicating that this is the last message, and
+  /// should be coalesced with trailing metadata.
+  ///
+  /// \sa GRPC_WRITE_LAST_MESSAGE
+  bool is_last_message() const { return last_message_; }
+
+ private:
+  void SetBit(const uint32_t mask) { flags_ |= mask; }
+
+  void ClearBit(const uint32_t mask) { flags_ &= ~mask; }
+
+  bool GetBit(const uint32_t mask) const { return (flags_ & mask) != 0; }
+
+  uint32_t flags_;
+  bool last_message_;
+};
+
+namespace internal {
+
+/// Default argument for CallOpSet. I is unused by the class, but can be
+/// used for generating multiple names for the same thing.
+template <int I>
+class CallNoOp {
+ protected:
+  void AddOp(grpc_op* /*ops*/, size_t* /*nops*/) {}
+  void FinishOp(bool* /*status*/) {}
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* /*interceptor_methods*/) {}
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* /*interceptor_methods*/) {}
+  void SetHijackingState(InterceptorBatchMethodsImpl* /*interceptor_methods*/) {
+  }
+};
+
+class CallOpSendInitialMetadata {
+ public:
+  CallOpSendInitialMetadata() : send_(false) {
+    maybe_compression_level_.is_set = false;
+  }
+
+  void SendInitialMetadata(std::multimap<grpc::string, grpc::string>* metadata,
+                           uint32_t flags) {
+    maybe_compression_level_.is_set = false;
+    send_ = true;
+    flags_ = flags;
+    metadata_map_ = metadata;
+  }
+
+  void set_compression_level(grpc_compression_level level) {
+    maybe_compression_level_.is_set = true;
+    maybe_compression_level_.level = level;
+  }
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (!send_ || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_SEND_INITIAL_METADATA;
+    op->flags = flags_;
+    op->reserved = NULL;
+    initial_metadata_ =
+        FillMetadataArray(*metadata_map_, &initial_metadata_count_, "");
+    op->data.send_initial_metadata.count = initial_metadata_count_;
+    op->data.send_initial_metadata.metadata = initial_metadata_;
+    op->data.send_initial_metadata.maybe_compression_level.is_set =
+        maybe_compression_level_.is_set;
+    if (maybe_compression_level_.is_set) {
+      op->data.send_initial_metadata.maybe_compression_level.level =
+          maybe_compression_level_.level;
+    }
+  }
+  void FinishOp(bool* /*status*/) {
+    if (!send_ || hijacked_) return;
+    g_core_codegen_interface->gpr_free(initial_metadata_);
+    send_ = false;
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (!send_) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA);
+    interceptor_methods->SetSendInitialMetadata(metadata_map_);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* /*interceptor_methods*/) {}
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* /*interceptor_methods*/) {
+    hijacked_ = true;
+  }
+
+  bool hijacked_ = false;
+  bool send_;
+  uint32_t flags_;
+  size_t initial_metadata_count_;
+  std::multimap<grpc::string, grpc::string>* metadata_map_;
+  grpc_metadata* initial_metadata_;
+  struct {
+    bool is_set;
+    grpc_compression_level level;
+  } maybe_compression_level_;
+};
+
+class CallOpSendMessage {
+ public:
+  CallOpSendMessage() : send_buf_() {}
+
+  /// Send \a message using \a options for the write. The \a options are cleared
+  /// after use.
+  template <class M>
+  Status SendMessage(const M& message,
+                     WriteOptions options) GRPC_MUST_USE_RESULT;
+
+  template <class M>
+  Status SendMessage(const M& message) GRPC_MUST_USE_RESULT;
+
+  /// Send \a message using \a options for the write. The \a options are cleared
+  /// after use. This form of SendMessage allows gRPC to reference \a message
+  /// beyond the lifetime of SendMessage.
+  template <class M>
+  Status SendMessagePtr(const M* message,
+                        WriteOptions options) GRPC_MUST_USE_RESULT;
+
+  /// This form of SendMessage allows gRPC to reference \a message beyond the
+  /// lifetime of SendMessage.
+  template <class M>
+  Status SendMessagePtr(const M* message) GRPC_MUST_USE_RESULT;
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (msg_ == nullptr && !send_buf_.Valid()) return;
+    if (hijacked_) {
+      serializer_ = nullptr;
+      return;
+    }
+    if (msg_ != nullptr) {
+      GPR_CODEGEN_ASSERT(serializer_(msg_).ok());
+    }
+    serializer_ = nullptr;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->flags = write_options_.flags();
+    op->reserved = NULL;
+    op->data.send_message.send_message = send_buf_.c_buffer();
+    // Flags are per-message: clear them after use.
+    write_options_.Clear();
+  }
+  void FinishOp(bool* status) {
+    if (msg_ == nullptr && !send_buf_.Valid()) return;
+    if (hijacked_ && failed_send_) {
+      // Hijacking interceptor failed this Op
+      *status = false;
+    } else if (!*status) {
+      // This Op was passed down to core and the Op failed
+      failed_send_ = true;
+    }
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (msg_ == nullptr && !send_buf_.Valid()) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_SEND_MESSAGE);
+    interceptor_methods->SetSendMessage(&send_buf_, &msg_, &failed_send_,
+                                        serializer_);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (msg_ != nullptr || send_buf_.Valid()) {
+      interceptor_methods->AddInterceptionHookPoint(
+          experimental::InterceptionHookPoints::POST_SEND_MESSAGE);
+    }
+    send_buf_.Clear();
+    msg_ = nullptr;
+    // The contents of the SendMessage value that was previously set
+    // has had its references stolen by core's operations
+    interceptor_methods->SetSendMessage(nullptr, nullptr, &failed_send_,
+                                        nullptr);
+  }
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* /*interceptor_methods*/) {
+    hijacked_ = true;
+  }
+
+ private:
+  const void* msg_ = nullptr;  // The original non-serialized message
+  bool hijacked_ = false;
+  bool failed_send_ = false;
+  ByteBuffer send_buf_;
+  WriteOptions write_options_;
+  std::function<Status(const void*)> serializer_;
+};
+
+template <class M>
+Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) {
+  write_options_ = options;
+  serializer_ = [this](const void* message) {
+    bool own_buf;
+    send_buf_.Clear();
+    // TODO(vjpai): Remove the void below when possible
+    // The void in the template parameter below should not be needed
+    // (since it should be implicit) but is needed due to an observed
+    // difference in behavior between clang and gcc for certain internal users
+    Status result = SerializationTraits<M, void>::Serialize(
+        *static_cast<const M*>(message), send_buf_.bbuf_ptr(), &own_buf);
+    if (!own_buf) {
+      send_buf_.Duplicate();
+    }
+    return result;
+  };
+  // Serialize immediately only if we do not have access to the message pointer
+  if (msg_ == nullptr) {
+    Status result = serializer_(&message);
+    serializer_ = nullptr;
+    return result;
+  }
+  return Status();
+}
+
+template <class M>
+Status CallOpSendMessage::SendMessage(const M& message) {
+  return SendMessage(message, WriteOptions());
+}
+
+template <class M>
+Status CallOpSendMessage::SendMessagePtr(const M* message,
+                                         WriteOptions options) {
+  msg_ = message;
+  return SendMessage(*message, options);
+}
+
+template <class M>
+Status CallOpSendMessage::SendMessagePtr(const M* message) {
+  msg_ = message;
+  return SendMessage(*message, WriteOptions());
+}
+
+template <class R>
+class CallOpRecvMessage {
+ public:
+  CallOpRecvMessage()
+      : got_message(false),
+        message_(nullptr),
+        allow_not_getting_message_(false) {}
+
+  void RecvMessage(R* message) { message_ = message; }
+
+  // Do not change status if no message is received.
+  void AllowNoMessage() { allow_not_getting_message_ = true; }
+
+  bool got_message;
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (message_ == nullptr || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->flags = 0;
+    op->reserved = NULL;
+    op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr();
+  }
+
+  void FinishOp(bool* status) {
+    if (message_ == nullptr || hijacked_) return;
+    if (recv_buf_.Valid()) {
+      if (*status) {
+        got_message = *status =
+            SerializationTraits<R>::Deserialize(recv_buf_.bbuf_ptr(), message_)
+                .ok();
+        recv_buf_.Release();
+      } else {
+        got_message = false;
+        recv_buf_.Clear();
+      }
+    } else {
+      got_message = false;
+      if (!allow_not_getting_message_) {
+        *status = false;
+      }
+    }
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (message_ == nullptr) return;
+    interceptor_methods->SetRecvMessage(message_, &got_message);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (message_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
+    if (!got_message) interceptor_methods->SetRecvMessage(nullptr, nullptr);
+  }
+  void SetHijackingState(InterceptorBatchMethodsImpl* interceptor_methods) {
+    hijacked_ = true;
+    if (message_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_RECV_MESSAGE);
+    got_message = true;
+  }
+
+ private:
+  R* message_;
+  ByteBuffer recv_buf_;
+  bool allow_not_getting_message_;
+  bool hijacked_ = false;
+};
+
+class DeserializeFunc {
+ public:
+  virtual Status Deserialize(ByteBuffer* buf) = 0;
+  virtual ~DeserializeFunc() {}
+};
+
+template <class R>
+class DeserializeFuncType final : public DeserializeFunc {
+ public:
+  DeserializeFuncType(R* message) : message_(message) {}
+  Status Deserialize(ByteBuffer* buf) override {
+    return SerializationTraits<R>::Deserialize(buf->bbuf_ptr(), message_);
+  }
+
+  ~DeserializeFuncType() override {}
+
+ private:
+  R* message_;  // Not a managed pointer because management is external to this
+};
+
+class CallOpGenericRecvMessage {
+ public:
+  CallOpGenericRecvMessage()
+      : got_message(false), allow_not_getting_message_(false) {}
+
+  template <class R>
+  void RecvMessage(R* message) {
+    // Use an explicit base class pointer to avoid resolution error in the
+    // following unique_ptr::reset for some old implementations.
+    DeserializeFunc* func = new DeserializeFuncType<R>(message);
+    deserialize_.reset(func);
+    message_ = message;
+  }
+
+  // Do not change status if no message is received.
+  void AllowNoMessage() { allow_not_getting_message_ = true; }
+
+  bool got_message;
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (!deserialize_ || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->flags = 0;
+    op->reserved = NULL;
+    op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr();
+  }
+
+  void FinishOp(bool* status) {
+    if (!deserialize_ || hijacked_) return;
+    if (recv_buf_.Valid()) {
+      if (*status) {
+        got_message = true;
+        *status = deserialize_->Deserialize(&recv_buf_).ok();
+        recv_buf_.Release();
+      } else {
+        got_message = false;
+        recv_buf_.Clear();
+      }
+    } else {
+      got_message = false;
+      if (!allow_not_getting_message_) {
+        *status = false;
+      }
+    }
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (!deserialize_) return;
+    interceptor_methods->SetRecvMessage(message_, &got_message);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (!deserialize_) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
+    if (!got_message) interceptor_methods->SetRecvMessage(nullptr, nullptr);
+    deserialize_.reset();
+  }
+  void SetHijackingState(InterceptorBatchMethodsImpl* interceptor_methods) {
+    hijacked_ = true;
+    if (!deserialize_) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_RECV_MESSAGE);
+    got_message = true;
+  }
+
+ private:
+  void* message_;
+  bool hijacked_ = false;
+  std::unique_ptr<DeserializeFunc> deserialize_;
+  ByteBuffer recv_buf_;
+  bool allow_not_getting_message_;
+};
+
+class CallOpClientSendClose {
+ public:
+  CallOpClientSendClose() : send_(false) {}
+
+  void ClientSendClose() { send_ = true; }
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (!send_ || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+    op->flags = 0;
+    op->reserved = NULL;
+  }
+  void FinishOp(bool* /*status*/) { send_ = false; }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (!send_) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_SEND_CLOSE);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* /*interceptor_methods*/) {}
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* /*interceptor_methods*/) {
+    hijacked_ = true;
+  }
+
+ private:
+  bool hijacked_ = false;
+  bool send_;
+};
+
+class CallOpServerSendStatus {
+ public:
+  CallOpServerSendStatus() : send_status_available_(false) {}
+
+  void ServerSendStatus(
+      std::multimap<grpc::string, grpc::string>* trailing_metadata,
+      const Status& status) {
+    send_error_details_ = status.error_details();
+    metadata_map_ = trailing_metadata;
+    send_status_available_ = true;
+    send_status_code_ = static_cast<grpc_status_code>(status.error_code());
+    send_error_message_ = status.error_message();
+  }
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (!send_status_available_ || hijacked_) return;
+    trailing_metadata_ = FillMetadataArray(
+        *metadata_map_, &trailing_metadata_count_, send_error_details_);
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+    op->data.send_status_from_server.trailing_metadata_count =
+        trailing_metadata_count_;
+    op->data.send_status_from_server.trailing_metadata = trailing_metadata_;
+    op->data.send_status_from_server.status = send_status_code_;
+    error_message_slice_ = SliceReferencingString(send_error_message_);
+    op->data.send_status_from_server.status_details =
+        send_error_message_.empty() ? nullptr : &error_message_slice_;
+    op->flags = 0;
+    op->reserved = NULL;
+  }
+
+  void FinishOp(bool* /*status*/) {
+    if (!send_status_available_ || hijacked_) return;
+    g_core_codegen_interface->gpr_free(trailing_metadata_);
+    send_status_available_ = false;
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (!send_status_available_) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_SEND_STATUS);
+    interceptor_methods->SetSendTrailingMetadata(metadata_map_);
+    interceptor_methods->SetSendStatus(&send_status_code_, &send_error_details_,
+                                       &send_error_message_);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* /*interceptor_methods*/) {}
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* /*interceptor_methods*/) {
+    hijacked_ = true;
+  }
+
+ private:
+  bool hijacked_ = false;
+  bool send_status_available_;
+  grpc_status_code send_status_code_;
+  grpc::string send_error_details_;
+  grpc::string send_error_message_;
+  size_t trailing_metadata_count_;
+  std::multimap<grpc::string, grpc::string>* metadata_map_;
+  grpc_metadata* trailing_metadata_;
+  grpc_slice error_message_slice_;
+};
+
+class CallOpRecvInitialMetadata {
+ public:
+  CallOpRecvInitialMetadata() : metadata_map_(nullptr) {}
+
+  void RecvInitialMetadata(::grpc_impl::ClientContext* context) {
+    context->initial_metadata_received_ = true;
+    metadata_map_ = &context->recv_initial_metadata_;
+  }
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (metadata_map_ == nullptr || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_RECV_INITIAL_METADATA;
+    op->data.recv_initial_metadata.recv_initial_metadata = metadata_map_->arr();
+    op->flags = 0;
+    op->reserved = NULL;
+  }
+
+  void FinishOp(bool* /*status*/) {
+    if (metadata_map_ == nullptr || hijacked_) return;
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    interceptor_methods->SetRecvInitialMetadata(metadata_map_);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (metadata_map_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA);
+    metadata_map_ = nullptr;
+  }
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* interceptor_methods) {
+    hijacked_ = true;
+    if (metadata_map_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_RECV_INITIAL_METADATA);
+  }
+
+ private:
+  bool hijacked_ = false;
+  MetadataMap* metadata_map_;
+};
+
+class CallOpClientRecvStatus {
+ public:
+  CallOpClientRecvStatus()
+      : recv_status_(nullptr), debug_error_string_(nullptr) {}
+
+  void ClientRecvStatus(::grpc_impl::ClientContext* context, Status* status) {
+    client_context_ = context;
+    metadata_map_ = &client_context_->trailing_metadata_;
+    recv_status_ = status;
+    error_message_ = g_core_codegen_interface->grpc_empty_slice();
+  }
+
+ protected:
+  void AddOp(grpc_op* ops, size_t* nops) {
+    if (recv_status_ == nullptr || hijacked_) return;
+    grpc_op* op = &ops[(*nops)++];
+    op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+    op->data.recv_status_on_client.trailing_metadata = metadata_map_->arr();
+    op->data.recv_status_on_client.status = &status_code_;
+    op->data.recv_status_on_client.status_details = &error_message_;
+    op->data.recv_status_on_client.error_string = &debug_error_string_;
+    op->flags = 0;
+    op->reserved = NULL;
+  }
+
+  void FinishOp(bool* /*status*/) {
+    if (recv_status_ == nullptr || hijacked_) return;
+    if (static_cast<StatusCode>(status_code_) == StatusCode::OK) {
+      *recv_status_ = Status();
+      GPR_CODEGEN_DEBUG_ASSERT(debug_error_string_ == nullptr);
+    } else {
+      *recv_status_ =
+          Status(static_cast<StatusCode>(status_code_),
+                 GRPC_SLICE_IS_EMPTY(error_message_)
+                     ? grpc::string()
+                     : grpc::string(GRPC_SLICE_START_PTR(error_message_),
+                                    GRPC_SLICE_END_PTR(error_message_)),
+                 metadata_map_->GetBinaryErrorDetails());
+      if (debug_error_string_ != nullptr) {
+        client_context_->set_debug_error_string(debug_error_string_);
+        g_core_codegen_interface->gpr_free((void*)debug_error_string_);
+      }
+    }
+    // TODO(soheil): Find callers that set debug string even for status OK,
+    //               and fix them.
+    g_core_codegen_interface->grpc_slice_unref(error_message_);
+  }
+
+  void SetInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    interceptor_methods->SetRecvStatus(recv_status_);
+    interceptor_methods->SetRecvTrailingMetadata(metadata_map_);
+  }
+
+  void SetFinishInterceptionHookPoint(
+      InterceptorBatchMethodsImpl* interceptor_methods) {
+    if (recv_status_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::POST_RECV_STATUS);
+    recv_status_ = nullptr;
+  }
+
+  void SetHijackingState(InterceptorBatchMethodsImpl* interceptor_methods) {
+    hijacked_ = true;
+    if (recv_status_ == nullptr) return;
+    interceptor_methods->AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::PRE_RECV_STATUS);
+  }
+
+ private:
+  bool hijacked_ = false;
+  ::grpc_impl::ClientContext* client_context_;
+  MetadataMap* metadata_map_;
+  Status* recv_status_;
+  const char* debug_error_string_;
+  grpc_status_code status_code_;
+  grpc_slice error_message_;
+};
+
+template <class Op1 = CallNoOp<1>, class Op2 = CallNoOp<2>,
+          class Op3 = CallNoOp<3>, class Op4 = CallNoOp<4>,
+          class Op5 = CallNoOp<5>, class Op6 = CallNoOp<6>>
+class CallOpSet;
+
+/// Primary implementation of CallOpSetInterface.
+/// Since we cannot use variadic templates, we declare slots up to
+/// the maximum count of ops we'll need in a set. We leverage the
+/// empty base class optimization to slim this class (especially
+/// when there are many unused slots used). To avoid duplicate base classes,
+/// the template parmeter for CallNoOp is varied by argument position.
+template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
+class CallOpSet : public CallOpSetInterface,
+                  public Op1,
+                  public Op2,
+                  public Op3,
+                  public Op4,
+                  public Op5,
+                  public Op6 {
+ public:
+  CallOpSet() : core_cq_tag_(this), return_tag_(this) {}
+  // The copy constructor and assignment operator reset the value of
+  // core_cq_tag_, return_tag_, done_intercepting_ and interceptor_methods_
+  // since those are only meaningful on a specific object, not across objects.
+  CallOpSet(const CallOpSet& other)
+      : core_cq_tag_(this),
+        return_tag_(this),
+        call_(other.call_),
+        done_intercepting_(false),
+        interceptor_methods_(InterceptorBatchMethodsImpl()) {}
+
+  CallOpSet& operator=(const CallOpSet& other) {
+    core_cq_tag_ = this;
+    return_tag_ = this;
+    call_ = other.call_;
+    done_intercepting_ = false;
+    interceptor_methods_ = InterceptorBatchMethodsImpl();
+    return *this;
+  }
+
+  void FillOps(Call* call) override {
+    done_intercepting_ = false;
+    g_core_codegen_interface->grpc_call_ref(call->call());
+    call_ =
+        *call;  // It's fine to create a copy of call since it's just pointers
+
+    if (RunInterceptors()) {
+      ContinueFillOpsAfterInterception();
+    } else {
+      // After the interceptors are run, ContinueFillOpsAfterInterception will
+      // be run
+    }
+  }
+
+  bool FinalizeResult(void** tag, bool* status) override {
+    if (done_intercepting_) {
+      // Complete the avalanching since we are done with this batch of ops
+      call_.cq()->CompleteAvalanching();
+      // We have already finished intercepting and filling in the results. This
+      // round trip from the core needed to be made because interceptors were
+      // run
+      *tag = return_tag_;
+      *status = saved_status_;
+      g_core_codegen_interface->grpc_call_unref(call_.call());
+      return true;
+    }
+
+    this->Op1::FinishOp(status);
+    this->Op2::FinishOp(status);
+    this->Op3::FinishOp(status);
+    this->Op4::FinishOp(status);
+    this->Op5::FinishOp(status);
+    this->Op6::FinishOp(status);
+    saved_status_ = *status;
+    if (RunInterceptorsPostRecv()) {
+      *tag = return_tag_;
+      g_core_codegen_interface->grpc_call_unref(call_.call());
+      return true;
+    }
+    // Interceptors are going to be run, so we can't return the tag just yet.
+    // After the interceptors are run, ContinueFinalizeResultAfterInterception
+    return false;
+  }
+
+  void set_output_tag(void* return_tag) { return_tag_ = return_tag; }
+
+  void* core_cq_tag() override { return core_cq_tag_; }
+
+  /// set_core_cq_tag is used to provide a different core CQ tag than "this".
+  /// This is used for callback-based tags, where the core tag is the core
+  /// callback function. It does not change the use or behavior of any other
+  /// function (such as FinalizeResult)
+  void set_core_cq_tag(void* core_cq_tag) { core_cq_tag_ = core_cq_tag; }
+
+  // This will be called while interceptors are run if the RPC is a hijacked
+  // RPC. This should set hijacking state for each of the ops.
+  void SetHijackingState() override {
+    this->Op1::SetHijackingState(&interceptor_methods_);
+    this->Op2::SetHijackingState(&interceptor_methods_);
+    this->Op3::SetHijackingState(&interceptor_methods_);
+    this->Op4::SetHijackingState(&interceptor_methods_);
+    this->Op5::SetHijackingState(&interceptor_methods_);
+    this->Op6::SetHijackingState(&interceptor_methods_);
+  }
+
+  // Should be called after interceptors are done running
+  void ContinueFillOpsAfterInterception() override {
+    static const size_t MAX_OPS = 6;
+    grpc_op ops[MAX_OPS];
+    size_t nops = 0;
+    this->Op1::AddOp(ops, &nops);
+    this->Op2::AddOp(ops, &nops);
+    this->Op3::AddOp(ops, &nops);
+    this->Op4::AddOp(ops, &nops);
+    this->Op5::AddOp(ops, &nops);
+    this->Op6::AddOp(ops, &nops);
+
+    grpc_call_error err = g_core_codegen_interface->grpc_call_start_batch(
+        call_.call(), ops, nops, core_cq_tag(), nullptr);
+
+    if (err != GRPC_CALL_OK) {
+      // A failure here indicates an API misuse; for example, doing a Write
+      // while another Write is already pending on the same RPC or invoking
+      // WritesDone multiple times
+      // gpr_log(GPR_ERROR, "API misuse of type %s observed",
+      //        g_core_codegen_interface->grpc_call_error_to_string(err));
+      GPR_CODEGEN_ASSERT(false);
+    }
+  }
+
+  // Should be called after interceptors are done running on the finalize result
+  // path
+  void ContinueFinalizeResultAfterInterception() override {
+    done_intercepting_ = true;
+    // The following call_start_batch is internally-generated so no need for an
+    // explanatory log on failure.
+    GPR_CODEGEN_ASSERT(g_core_codegen_interface->grpc_call_start_batch(
+                           call_.call(), nullptr, 0, core_cq_tag(), nullptr) ==
+                       GRPC_CALL_OK);
+  }
+
+ private:
+  // Returns true if no interceptors need to be run
+  bool RunInterceptors() {
+    interceptor_methods_.ClearState();
+    interceptor_methods_.SetCallOpSetInterface(this);
+    interceptor_methods_.SetCall(&call_);
+    this->Op1::SetInterceptionHookPoint(&interceptor_methods_);
+    this->Op2::SetInterceptionHookPoint(&interceptor_methods_);
+    this->Op3::SetInterceptionHookPoint(&interceptor_methods_);
+    this->Op4::SetInterceptionHookPoint(&interceptor_methods_);
+    this->Op5::SetInterceptionHookPoint(&interceptor_methods_);
+    this->Op6::SetInterceptionHookPoint(&interceptor_methods_);
+    if (interceptor_methods_.InterceptorsListEmpty()) {
+      return true;
+    }
+    // This call will go through interceptors and would need to
+    // schedule new batches, so delay completion queue shutdown
+    call_.cq()->RegisterAvalanching();
+    return interceptor_methods_.RunInterceptors();
+  }
+  // Returns true if no interceptors need to be run
+  bool RunInterceptorsPostRecv() {
+    // Call and OpSet had already been set on the set state.
+    // SetReverse also clears previously set hook points
+    interceptor_methods_.SetReverse();
+    this->Op1::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    this->Op2::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    this->Op3::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    this->Op4::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    this->Op5::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    this->Op6::SetFinishInterceptionHookPoint(&interceptor_methods_);
+    return interceptor_methods_.RunInterceptors();
+  }
+
+  void* core_cq_tag_;
+  void* return_tag_;
+  Call call_;
+  bool done_intercepting_ = false;
+  InterceptorBatchMethodsImpl interceptor_methods_;
+  bool saved_status_;
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CALL_OP_SET_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set_interface.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set_interface.h
new file mode 100644
index 0000000..3b74566
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/call_op_set_interface.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
+#define GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
+
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+
+namespace grpc {
+namespace internal {
+
+class Call;
+
+/// An abstract collection of call ops, used to generate the
+/// grpc_call_op structure to pass down to the lower layers,
+/// and as it is-a CompletionQueueTag, also massages the final
+/// completion into the correct form for consumption in the C++
+/// API.
+class CallOpSetInterface : public CompletionQueueTag {
+ public:
+  /// Fills in grpc_op, starting from ops[*nops] and moving
+  /// upwards.
+  virtual void FillOps(internal::Call* call) = 0;
+
+  /// Get the tag to be used at the core completion queue. Generally, the
+  /// value of core_cq_tag will be "this". However, it can be overridden if we
+  /// want core to process the tag differently (e.g., as a core callback)
+  virtual void* core_cq_tag() = 0;
+
+  // This will be called while interceptors are run if the RPC is a hijacked
+  // RPC. This should set hijacking state for each of the ops.
+  virtual void SetHijackingState() = 0;
+
+  // Should be called after interceptors are done running
+  virtual void ContinueFillOpsAfterInterception() = 0;
+
+  // Should be called after interceptors are done running on the finalize result
+  // path
+  virtual void ContinueFinalizeResultAfterInterception() = 0;
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CALL_OP_SET_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/callback_common.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/callback_common.h
new file mode 100644
index 0000000..aa3bd26
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/callback_common.h	
@@ -0,0 +1,222 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
+#define GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
+
+#include <functional>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc {
+namespace internal {
+
+/// An exception-safe way of invoking a user-specified callback function
+// TODO(vjpai): decide whether it is better for this to take a const lvalue
+//              parameter or an rvalue parameter, or if it even matters
+template <class Func, class... Args>
+void CatchingCallback(Func&& func, Args&&... args) {
+#if GRPC_ALLOW_EXCEPTIONS
+  try {
+    func(std::forward<Args>(args)...);
+  } catch (...) {
+    // nothing to return or change here, just don't crash the library
+  }
+#else   // GRPC_ALLOW_EXCEPTIONS
+  func(std::forward<Args>(args)...);
+#endif  // GRPC_ALLOW_EXCEPTIONS
+}
+
+template <class Reactor, class Func, class... Args>
+Reactor* CatchingReactorGetter(Func&& func, Args&&... args) {
+#if GRPC_ALLOW_EXCEPTIONS
+  try {
+    return func(std::forward<Args>(args)...);
+  } catch (...) {
+    // fail the RPC, don't crash the library
+    return nullptr;
+  }
+#else   // GRPC_ALLOW_EXCEPTIONS
+  return func(std::forward<Args>(args)...);
+#endif  // GRPC_ALLOW_EXCEPTIONS
+}
+
+// The contract on these tags is that they are single-shot. They must be
+// constructed and then fired at exactly one point. There is no expectation
+// that they can be reused without reconstruction.
+
+class CallbackWithStatusTag
+    : public grpc_experimental_completion_queue_functor {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(CallbackWithStatusTag));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  CallbackWithStatusTag(grpc_call* call, std::function<void(Status)> f,
+                        CompletionQueueTag* ops)
+      : call_(call), func_(std::move(f)), ops_(ops) {
+    g_core_codegen_interface->grpc_call_ref(call);
+    functor_run = &CallbackWithStatusTag::StaticRun;
+    // A client-side callback should never be run inline since they will always
+    // have work to do from the user application. So, set the parent's
+    // inlineable field to false
+    inlineable = false;
+  }
+  ~CallbackWithStatusTag() {}
+  Status* status_ptr() { return &status_; }
+
+  // force_run can not be performed on a tag if operations using this tag
+  // have been sent to PerformOpsOnCall. It is intended for error conditions
+  // that are detected before the operations are internally processed.
+  void force_run(Status s) {
+    status_ = std::move(s);
+    Run(true);
+  }
+
+ private:
+  grpc_call* call_;
+  std::function<void(Status)> func_;
+  CompletionQueueTag* ops_;
+  Status status_;
+
+  static void StaticRun(grpc_experimental_completion_queue_functor* cb,
+                        int ok) {
+    static_cast<CallbackWithStatusTag*>(cb)->Run(static_cast<bool>(ok));
+  }
+  void Run(bool ok) {
+    void* ignored = ops_;
+
+    if (!ops_->FinalizeResult(&ignored, &ok)) {
+      // The tag was swallowed
+      return;
+    }
+    GPR_CODEGEN_ASSERT(ignored == ops_);
+
+    // Last use of func_ or status_, so ok to move them out
+    auto func = std::move(func_);
+    auto status = std::move(status_);
+    func_ = nullptr;     // reset to clear this out for sure
+    status_ = Status();  // reset to clear this out for sure
+    CatchingCallback(std::move(func), std::move(status));
+    g_core_codegen_interface->grpc_call_unref(call_);
+  }
+};
+
+/// CallbackWithSuccessTag can be reused multiple times, and will be used in
+/// this fashion for streaming operations. As a result, it shouldn't clear
+/// anything up until its destructor
+class CallbackWithSuccessTag
+    : public grpc_experimental_completion_queue_functor {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(CallbackWithSuccessTag));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  CallbackWithSuccessTag() : call_(nullptr) {}
+
+  CallbackWithSuccessTag(const CallbackWithSuccessTag&) = delete;
+  CallbackWithSuccessTag& operator=(const CallbackWithSuccessTag&) = delete;
+
+  ~CallbackWithSuccessTag() { Clear(); }
+
+  // Set can only be called on a default-constructed or Clear'ed tag.
+  // It should never be called on a tag that was constructed with arguments
+  // or on a tag that has been Set before unless the tag has been cleared.
+  // can_inline indicates that this particular callback can be executed inline
+  // (without needing a thread hop) and is only used for library-provided server
+  // callbacks.
+  void Set(grpc_call* call, std::function<void(bool)> f,
+           CompletionQueueTag* ops, bool can_inline) {
+    GPR_CODEGEN_ASSERT(call_ == nullptr);
+    g_core_codegen_interface->grpc_call_ref(call);
+    call_ = call;
+    func_ = std::move(f);
+    ops_ = ops;
+    functor_run = &CallbackWithSuccessTag::StaticRun;
+    inlineable = can_inline;
+  }
+
+  void Clear() {
+    if (call_ != nullptr) {
+      grpc_call* call = call_;
+      call_ = nullptr;
+      func_ = nullptr;
+      g_core_codegen_interface->grpc_call_unref(call);
+    }
+  }
+
+  CompletionQueueTag* ops() { return ops_; }
+
+  // force_run can not be performed on a tag if operations using this tag
+  // have been sent to PerformOpsOnCall. It is intended for error conditions
+  // that are detected before the operations are internally processed.
+  void force_run(bool ok) { Run(ok); }
+
+  /// check if this tag is currently set
+  operator bool() const { return call_ != nullptr; }
+
+ private:
+  grpc_call* call_;
+  std::function<void(bool)> func_;
+  CompletionQueueTag* ops_;
+
+  static void StaticRun(grpc_experimental_completion_queue_functor* cb,
+                        int ok) {
+    static_cast<CallbackWithSuccessTag*>(cb)->Run(static_cast<bool>(ok));
+  }
+  void Run(bool ok) {
+    void* ignored = ops_;
+    // Allow a "false" return value from FinalizeResult to silence the
+    // callback, just as it silences a CQ tag in the async cases
+#ifndef NDEBUG
+    auto* ops = ops_;
+#endif
+    bool do_callback = ops_->FinalizeResult(&ignored, &ok);
+    GPR_CODEGEN_DEBUG_ASSERT(ignored == ops);
+
+    if (do_callback) {
+      CatchingCallback(func_, ok);
+    }
+  }
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/channel_interface.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/channel_interface.h
new file mode 100644
index 0000000..4fed2f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/channel_interface.h	
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CHANNEL_INTERFACE_H
+#define GRPCPP_IMPL_CODEGEN_CHANNEL_INTERFACE_H
+
+#include <grpc/impl/codegen/connectivity_state.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/time.h>
+
+namespace grpc_impl {
+class ClientContext;
+class CompletionQueue;
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+namespace internal {
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl;
+template <class R>
+class ClientAsyncReaderFactory;
+template <class W>
+class ClientAsyncWriterFactory;
+template <class W, class R>
+class ClientAsyncReaderWriterFactory;
+template <class R>
+class ClientAsyncResponseReaderFactory;
+template <class W, class R>
+class ClientCallbackReaderWriterFactory;
+template <class R>
+class ClientCallbackReaderFactory;
+template <class W>
+class ClientCallbackWriterFactory;
+class ClientCallbackUnaryFactory;
+}  // namespace internal
+}  // namespace grpc_impl
+
+namespace grpc {
+class ChannelInterface;
+
+namespace experimental {
+class DelegatingChannel;
+}
+
+namespace internal {
+class Call;
+class CallOpSetInterface;
+class RpcMethod;
+class InterceptedChannel;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+}  // namespace internal
+
+/// Codegen interface for \a grpc::Channel.
+class ChannelInterface {
+ public:
+  virtual ~ChannelInterface() {}
+  /// Get the current channel state. If the channel is in IDLE and
+  /// \a try_to_connect is set to true, try to connect.
+  virtual grpc_connectivity_state GetState(bool try_to_connect) = 0;
+
+  /// Return the \a tag on \a cq when the channel state is changed or \a
+  /// deadline expires. \a GetState needs to called to get the current state.
+  template <typename T>
+  void NotifyOnStateChange(grpc_connectivity_state last_observed, T deadline,
+                           ::grpc_impl::CompletionQueue* cq, void* tag) {
+    TimePoint<T> deadline_tp(deadline);
+    NotifyOnStateChangeImpl(last_observed, deadline_tp.raw_time(), cq, tag);
+  }
+
+  /// Blocking wait for channel state change or \a deadline expiration.
+  /// \a GetState needs to called to get the current state.
+  template <typename T>
+  bool WaitForStateChange(grpc_connectivity_state last_observed, T deadline) {
+    TimePoint<T> deadline_tp(deadline);
+    return WaitForStateChangeImpl(last_observed, deadline_tp.raw_time());
+  }
+
+  /// Wait for this channel to be connected
+  template <typename T>
+  bool WaitForConnected(T deadline) {
+    grpc_connectivity_state state;
+    while ((state = GetState(true)) != GRPC_CHANNEL_READY) {
+      if (!WaitForStateChange(state, deadline)) return false;
+    }
+    return true;
+  }
+
+ private:
+  template <class R>
+  friend class ::grpc_impl::ClientReader;
+  template <class W>
+  friend class ::grpc_impl::ClientWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::ClientReaderWriter;
+  template <class R>
+  friend class ::grpc_impl::internal::ClientAsyncReaderFactory;
+  template <class W>
+  friend class ::grpc_impl::internal::ClientAsyncWriterFactory;
+  template <class W, class R>
+  friend class ::grpc_impl::internal::ClientAsyncReaderWriterFactory;
+  template <class R>
+  friend class ::grpc_impl::internal::ClientAsyncResponseReaderFactory;
+  template <class W, class R>
+  friend class ::grpc_impl::internal::ClientCallbackReaderWriterFactory;
+  template <class R>
+  friend class ::grpc_impl::internal::ClientCallbackReaderFactory;
+  template <class W>
+  friend class ::grpc_impl::internal::ClientCallbackWriterFactory;
+  friend class ::grpc_impl::internal::ClientCallbackUnaryFactory;
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc::internal::BlockingUnaryCallImpl;
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc_impl::internal::CallbackUnaryCallImpl;
+  friend class ::grpc::internal::RpcMethod;
+  friend class ::grpc::experimental::DelegatingChannel;
+  friend class ::grpc::internal::InterceptedChannel;
+  virtual internal::Call CreateCall(const internal::RpcMethod& method,
+                                    ::grpc_impl::ClientContext* context,
+                                    ::grpc_impl::CompletionQueue* cq) = 0;
+  virtual void PerformOpsOnCall(internal::CallOpSetInterface* ops,
+                                internal::Call* call) = 0;
+  virtual void* RegisterMethod(const char* method) = 0;
+  virtual void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                                       gpr_timespec deadline,
+                                       ::grpc_impl::CompletionQueue* cq,
+                                       void* tag) = 0;
+  virtual bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                                      gpr_timespec deadline) = 0;
+
+  // EXPERIMENTAL
+  // This is needed to keep codegen_test_minimal happy. InterceptedChannel needs
+  // to make use of this but can't directly call Channel's implementation
+  // because of the test.
+  // Returns an empty Call object (rather than being pure) since this is a new
+  // method and adding a new pure method to an interface would be a breaking
+  // change (even though this is private and non-API)
+  virtual internal::Call CreateCallInternal(
+      const internal::RpcMethod& /*method*/,
+      ::grpc_impl::ClientContext* /*context*/,
+      ::grpc_impl::CompletionQueue* /*cq*/, size_t /*interceptor_pos*/) {
+    return internal::Call();
+  }
+
+  // EXPERIMENTAL
+  // A method to get the callbackable completion queue associated with this
+  // channel. If the return value is nullptr, this channel doesn't support
+  // callback operations.
+  // TODO(vjpai): Consider a better default like using a global CQ
+  // Returns nullptr (rather than being pure) since this is a post-1.0 method
+  // and adding a new pure method to an interface would be a breaking change
+  // (even though this is private and non-API)
+  virtual ::grpc_impl::CompletionQueue* CallbackCQ() { return nullptr; }
+};
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CHANNEL_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback.h
new file mode 100644
index 0000000..a8b58f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback.h	
@@ -0,0 +1,76 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
+
+#include <grpcpp/impl/codegen/client_callback_impl.h>
+
+namespace grpc {
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+template <class Response>
+using ClientCallbackReader = ::grpc_impl::ClientCallbackReader<Response>;
+
+template <class Request>
+using ClientCallbackWriter = ::grpc_impl::ClientCallbackWriter<Request>;
+
+template <class Request, class Response>
+using ClientCallbackReaderWriter =
+    ::grpc_impl::ClientCallbackReaderWriter<Request, Response>;
+
+template <class Response>
+using ClientReadReactor = ::grpc_impl::ClientReadReactor<Response>;
+
+template <class Request>
+using ClientWriteReactor = ::grpc_impl::ClientWriteReactor<Request>;
+
+template <class Request, class Response>
+using ClientBidiReactor = ::grpc_impl::ClientBidiReactor<Request, Response>;
+
+typedef ::grpc_impl::ClientUnaryReactor ClientUnaryReactor;
+#endif
+
+// TODO(vjpai): Remove namespace experimental when de-experimentalized fully.
+namespace experimental {
+
+template <class Response>
+using ClientCallbackReader = ::grpc_impl::ClientCallbackReader<Response>;
+
+template <class Request>
+using ClientCallbackWriter = ::grpc_impl::ClientCallbackWriter<Request>;
+
+template <class Request, class Response>
+using ClientCallbackReaderWriter =
+    ::grpc_impl::ClientCallbackReaderWriter<Request, Response>;
+
+template <class Response>
+using ClientReadReactor = ::grpc_impl::ClientReadReactor<Response>;
+
+template <class Request>
+using ClientWriteReactor = ::grpc_impl::ClientWriteReactor<Request>;
+
+template <class Request, class Response>
+using ClientBidiReactor = ::grpc_impl::ClientBidiReactor<Request, Response>;
+
+typedef ::grpc_impl::ClientUnaryReactor ClientUnaryReactor;
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback_impl.h
new file mode 100644
index 0000000..fac67c5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_callback_impl.h	
@@ -0,0 +1,1064 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_IMPL_H
+#include <atomic>
+#include <functional>
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_op_set.h>
+#include <grpcpp/impl/codegen/callback_common.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc {
+namespace internal {
+class RpcMethod;
+}  // namespace internal
+}  // namespace grpc
+
+namespace grpc_impl {
+class Channel;
+class ClientContext;
+
+namespace internal {
+
+/// Perform a callback-based unary call
+/// TODO(vjpai): Combine as much as possible with the blocking unary call code
+template <class InputMessage, class OutputMessage>
+void CallbackUnaryCall(::grpc::ChannelInterface* channel,
+                       const ::grpc::internal::RpcMethod& method,
+                       ::grpc_impl::ClientContext* context,
+                       const InputMessage* request, OutputMessage* result,
+                       std::function<void(::grpc::Status)> on_completion) {
+  CallbackUnaryCallImpl<InputMessage, OutputMessage> x(
+      channel, method, context, request, result, on_completion);
+}
+
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl {
+ public:
+  CallbackUnaryCallImpl(::grpc::ChannelInterface* channel,
+                        const ::grpc::internal::RpcMethod& method,
+                        ::grpc_impl::ClientContext* context,
+                        const InputMessage* request, OutputMessage* result,
+                        std::function<void(::grpc::Status)> on_completion) {
+    ::grpc_impl::CompletionQueue* cq = channel->CallbackCQ();
+    GPR_CODEGEN_ASSERT(cq != nullptr);
+    grpc::internal::Call call(channel->CreateCall(method, context, cq));
+
+    using FullCallOpSet = grpc::internal::CallOpSet<
+        ::grpc::internal::CallOpSendInitialMetadata,
+        grpc::internal::CallOpSendMessage,
+        grpc::internal::CallOpRecvInitialMetadata,
+        grpc::internal::CallOpRecvMessage<OutputMessage>,
+        grpc::internal::CallOpClientSendClose,
+        grpc::internal::CallOpClientRecvStatus>;
+
+    struct OpSetAndTag {
+      FullCallOpSet opset;
+      grpc::internal::CallbackWithStatusTag tag;
+    };
+    const size_t alloc_sz = sizeof(OpSetAndTag);
+    auto* const alloced = static_cast<OpSetAndTag*>(
+        ::grpc::g_core_codegen_interface->grpc_call_arena_alloc(call.call(),
+                                                                alloc_sz));
+    auto* ops = new (&alloced->opset) FullCallOpSet;
+    auto* tag = new (&alloced->tag)
+        grpc::internal::CallbackWithStatusTag(call.call(), on_completion, ops);
+
+    // TODO(vjpai): Unify code with sync API as much as possible
+    ::grpc::Status s = ops->SendMessagePtr(request);
+    if (!s.ok()) {
+      tag->force_run(s);
+      return;
+    }
+    ops->SendInitialMetadata(&context->send_initial_metadata_,
+                             context->initial_metadata_flags());
+    ops->RecvInitialMetadata(context);
+    ops->RecvMessage(result);
+    ops->AllowNoMessage();
+    ops->ClientSendClose();
+    ops->ClientRecvStatus(context, tag->status_ptr());
+    ops->set_core_cq_tag(tag);
+    call.PerformOps(ops);
+  }
+};
+}  // namespace internal
+
+// Forward declarations
+template <class Request, class Response>
+class ClientBidiReactor;
+template <class Response>
+class ClientReadReactor;
+template <class Request>
+class ClientWriteReactor;
+class ClientUnaryReactor;
+
+// NOTE: The streaming objects are not actually implemented in the public API.
+//       These interfaces are provided for mocking only. Typical applications
+//       will interact exclusively with the reactors that they define.
+template <class Request, class Response>
+class ClientCallbackReaderWriter {
+ public:
+  virtual ~ClientCallbackReaderWriter() {}
+  virtual void StartCall() = 0;
+  virtual void Write(const Request* req, ::grpc::WriteOptions options) = 0;
+  virtual void WritesDone() = 0;
+  virtual void Read(Response* resp) = 0;
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientBidiReactor<Request, Response>* reactor) {
+    reactor->BindStream(this);
+  }
+};
+
+template <class Response>
+class ClientCallbackReader {
+ public:
+  virtual ~ClientCallbackReader() {}
+  virtual void StartCall() = 0;
+  virtual void Read(Response* resp) = 0;
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientReadReactor<Response>* reactor) {
+    reactor->BindReader(this);
+  }
+};
+
+template <class Request>
+class ClientCallbackWriter {
+ public:
+  virtual ~ClientCallbackWriter() {}
+  virtual void StartCall() = 0;
+  void Write(const Request* req) { Write(req, ::grpc::WriteOptions()); }
+  virtual void Write(const Request* req, ::grpc::WriteOptions options) = 0;
+  void WriteLast(const Request* req, ::grpc::WriteOptions options) {
+    Write(req, options.set_last_message());
+  }
+  virtual void WritesDone() = 0;
+
+  virtual void AddHold(int holds) = 0;
+  virtual void RemoveHold() = 0;
+
+ protected:
+  void BindReactor(ClientWriteReactor<Request>* reactor) {
+    reactor->BindWriter(this);
+  }
+};
+
+class ClientCallbackUnary {
+ public:
+  virtual ~ClientCallbackUnary() {}
+  virtual void StartCall() = 0;
+
+ protected:
+  void BindReactor(ClientUnaryReactor* reactor);
+};
+
+// The following classes are the reactor interfaces that are to be implemented
+// by the user. They are passed in to the library as an argument to a call on a
+// stub (either a codegen-ed call or a generic call). The streaming RPC is
+// activated by calling StartCall, possibly after initiating StartRead,
+// StartWrite, or AddHold operations on the streaming object. Note that none of
+// the classes are pure; all reactions have a default empty reaction so that the
+// user class only needs to override those classes that it cares about.
+// The reactor must be passed to the stub invocation before any of the below
+// operations can be called.
+
+/// \a ClientBidiReactor is the interface for a bidirectional streaming RPC.
+template <class Request, class Response>
+class ClientBidiReactor {
+ public:
+  virtual ~ClientBidiReactor() {}
+
+  /// Activate the RPC and initiate any reads or writes that have been Start'ed
+  /// before this call. All streaming RPCs issued by the client MUST have
+  /// StartCall invoked on them (even if they are canceled) as this call is the
+  /// activation of their lifecycle.
+  void StartCall() { stream_->StartCall(); }
+
+  /// Initiate a read operation (or post it for later initiation if StartCall
+  /// has not yet been invoked).
+  ///
+  /// \param[out] resp Where to eventually store the read message. Valid when
+  ///                  the library calls OnReadDone
+  void StartRead(Response* resp) { stream_->Read(resp); }
+
+  /// Initiate a write operation (or post it for later initiation if StartCall
+  /// has not yet been invoked).
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  void StartWrite(const Request* req) {
+    StartWrite(req, ::grpc::WriteOptions());
+  }
+
+  /// Initiate/post a write operation with specified options.
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWrite(const Request* req, ::grpc::WriteOptions options) {
+    stream_->Write(req, std::move(options));
+  }
+
+  /// Initiate/post a write operation with specified options and an indication
+  /// that this is the last write (like StartWrite and StartWritesDone, merged).
+  /// Note that calling this means that no more calls to StartWrite,
+  /// StartWriteLast, or StartWritesDone are allowed.
+  ///
+  /// \param[in] req The message to be written. The library does not take
+  ///                ownership but the caller must ensure that the message is
+  ///                not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWriteLast(const Request* req, ::grpc::WriteOptions options) {
+    StartWrite(req, std::move(options.set_last_message()));
+  }
+
+  /// Indicate that the RPC will have no more write operations. This can only be
+  /// issued once for a given RPC. This is not required or allowed if
+  /// StartWriteLast is used since that already has the same implication.
+  /// Note that calling this means that no more calls to StartWrite,
+  /// StartWriteLast, or StartWritesDone are allowed.
+  void StartWritesDone() { stream_->WritesDone(); }
+
+  /// Holds are needed if (and only if) this stream has operations that take
+  /// place on it after StartCall but from outside one of the reactions
+  /// (OnReadDone, etc). This is _not_ a common use of the streaming API.
+  ///
+  /// Holds must be added before calling StartCall. If a stream still has a hold
+  /// in place, its resources will not be destroyed even if the status has
+  /// already come in from the wire and there are currently no active callbacks
+  /// outstanding. Similarly, the stream will not call OnDone if there are still
+  /// holds on it.
+  ///
+  /// For example, if a StartRead or StartWrite operation is going to be
+  /// initiated from elsewhere in the application, the application should call
+  /// AddHold or AddMultipleHolds before StartCall.  If there is going to be,
+  /// for example, a read-flow and a write-flow taking place outside the
+  /// reactions, then call AddMultipleHolds(2) before StartCall. When the
+  /// application knows that it won't issue any more read operations (such as
+  /// when a read comes back as not ok), it should issue a RemoveHold(). It
+  /// should also call RemoveHold() again after it does StartWriteLast or
+  /// StartWritesDone that indicates that there will be no more write ops.
+  /// The number of RemoveHold calls must match the total number of AddHold
+  /// calls plus the number of holds added by AddMultipleHolds.
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) { stream_->AddHold(holds); }
+  void RemoveHold() { stream_->RemoveHold(); }
+
+  /// Notifies the application that all operations associated with this RPC
+  /// have completed and provides the RPC status outcome.
+  ///
+  /// \param[in] s The status outcome of this RPC
+  virtual void OnDone(const ::grpc::Status& /*s*/) {}
+
+  /// Notifies the application that a read of initial metadata from the
+  /// server is done. If the application chooses not to implement this method,
+  /// it can assume that the initial metadata has been read before the first
+  /// call of OnReadDone or OnDone.
+  ///
+  /// \param[in] ok Was the initial metadata read successfully? If false, no
+  ///               new read/write operation will succeed.
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartRead operation completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no new read/write operation
+  ///               will succeed.
+  virtual void OnReadDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWrite operation completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no new read/write operation
+  ///               will succeed.
+  virtual void OnWriteDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWritesDone operation completed. Note
+  /// that this is only used on explicit StartWritesDone operations and not for
+  /// those that are implicitly invoked as part of a StartWriteLast.
+  ///
+  /// \param[in] ok Was it successful? If false, the application will later see
+  ///               the failure reflected as a bad status in OnDone.
+  virtual void OnWritesDoneDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackReaderWriter<Request, Response>;
+  void BindStream(ClientCallbackReaderWriter<Request, Response>* stream) {
+    stream_ = stream;
+  }
+  ClientCallbackReaderWriter<Request, Response>* stream_;
+};
+
+/// \a ClientReadReactor is the interface for a server-streaming RPC.
+/// All public methods behave as in ClientBidiReactor.
+template <class Response>
+class ClientReadReactor {
+ public:
+  virtual ~ClientReadReactor() {}
+
+  void StartCall() { reader_->StartCall(); }
+  void StartRead(Response* resp) { reader_->Read(resp); }
+
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) { reader_->AddHold(holds); }
+  void RemoveHold() { reader_->RemoveHold(); }
+
+  virtual void OnDone(const ::grpc::Status& /*s*/) {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnReadDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackReader<Response>;
+  void BindReader(ClientCallbackReader<Response>* reader) { reader_ = reader; }
+  ClientCallbackReader<Response>* reader_;
+};
+
+/// \a ClientWriteReactor is the interface for a client-streaming RPC.
+/// All public methods behave as in ClientBidiReactor.
+template <class Request>
+class ClientWriteReactor {
+ public:
+  virtual ~ClientWriteReactor() {}
+
+  void StartCall() { writer_->StartCall(); }
+  void StartWrite(const Request* req) {
+    StartWrite(req, ::grpc::WriteOptions());
+  }
+  void StartWrite(const Request* req, ::grpc::WriteOptions options) {
+    writer_->Write(req, std::move(options));
+  }
+  void StartWriteLast(const Request* req, ::grpc::WriteOptions options) {
+    StartWrite(req, std::move(options.set_last_message()));
+  }
+  void StartWritesDone() { writer_->WritesDone(); }
+
+  void AddHold() { AddMultipleHolds(1); }
+  void AddMultipleHolds(int holds) { writer_->AddHold(holds); }
+  void RemoveHold() { writer_->RemoveHold(); }
+
+  virtual void OnDone(const ::grpc::Status& /*s*/) {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnWriteDone(bool /*ok*/) {}
+  virtual void OnWritesDoneDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackWriter<Request>;
+  void BindWriter(ClientCallbackWriter<Request>* writer) { writer_ = writer; }
+  ClientCallbackWriter<Request>* writer_;
+};
+
+/// \a ClientUnaryReactor is a reactor-style interface for a unary RPC.
+/// This is _not_ a common way of invoking a unary RPC. In practice, this
+/// option should be used only if the unary RPC wants to receive initial
+/// metadata without waiting for the response to complete. Most deployments of
+/// RPC systems do not use this option, but it is needed for generality.
+/// All public methods behave as in ClientBidiReactor.
+/// StartCall is included for consistency with the other reactor flavors: even
+/// though there are no StartRead or StartWrite operations to queue before the
+/// call (that is part of the unary call itself) and there is no reactor object
+/// being created as a result of this call, we keep a consistent 2-phase
+/// initiation API among all the reactor flavors.
+class ClientUnaryReactor {
+ public:
+  virtual ~ClientUnaryReactor() {}
+
+  void StartCall() { call_->StartCall(); }
+  virtual void OnDone(const ::grpc::Status& /*s*/) {}
+  virtual void OnReadInitialMetadataDone(bool /*ok*/) {}
+
+ private:
+  friend class ClientCallbackUnary;
+  void BindCall(ClientCallbackUnary* call) { call_ = call; }
+  ClientCallbackUnary* call_;
+};
+
+// Define function out-of-line from class to avoid forward declaration issue
+inline void ClientCallbackUnary::BindReactor(ClientUnaryReactor* reactor) {
+  reactor->BindCall(this);
+}
+
+namespace internal {
+
+// Forward declare factory classes for friendship
+template <class Request, class Response>
+class ClientCallbackReaderWriterFactory;
+template <class Response>
+class ClientCallbackReaderFactory;
+template <class Request>
+class ClientCallbackWriterFactory;
+
+template <class Request, class Response>
+class ClientCallbackReaderWriterImpl
+    : public ClientCallbackReaderWriter<Request, Response> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackReaderWriterImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void MaybeFinish() {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      ::grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackReaderWriterImpl();
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      reactor->OnDone(s);
+    }
+  }
+
+  void StartCall() override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any read backlog
+    // 3. Any write backlog
+    // 4. Recv trailing metadata, on_completion callback
+    started_ = true;
+
+    start_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnReadInitialMetadataDone(ok);
+                     MaybeFinish();
+                   },
+                   &start_ops_, /*can_inline=*/false);
+    if (!start_corked_) {
+      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+    }
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    // Also set up the read and write tags so that they don't have to be set up
+    // each time
+    write_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnWriteDone(ok);
+                     MaybeFinish();
+                   },
+                   &write_ops_, /*can_inline=*/false);
+    write_ops_.set_core_cq_tag(&write_tag_);
+
+    read_tag_.Set(call_.call(),
+                  [this](bool ok) {
+                    reactor_->OnReadDone(ok);
+                    MaybeFinish();
+                  },
+                  &read_ops_, /*can_inline=*/false);
+    read_ops_.set_core_cq_tag(&read_tag_);
+    if (read_ops_at_start_) {
+      call_.PerformOps(&read_ops_);
+    }
+
+    if (write_ops_at_start_) {
+      call_.PerformOps(&write_ops_);
+    }
+
+    if (writes_done_ops_at_start_) {
+      call_.PerformOps(&writes_done_ops_);
+    }
+
+    finish_tag_.Set(call_.call(), [this](bool /*ok*/) { MaybeFinish(); },
+                    &finish_ops_, /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+  void Read(Response* msg) override {
+    read_ops_.RecvMessage(msg);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&read_ops_);
+    } else {
+      read_ops_at_start_ = true;
+    }
+  }
+
+  void Write(const Request* msg, ::grpc::WriteOptions options) override {
+    if (start_corked_) {
+      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+      start_corked_ = false;
+    }
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(vjpai): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&write_ops_);
+    } else {
+      write_ops_at_start_ = true;
+    }
+  }
+  void WritesDone() override {
+    if (start_corked_) {
+      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                           context_->initial_metadata_flags());
+      start_corked_ = false;
+    }
+    writes_done_ops_.ClientSendClose();
+    writes_done_tag_.Set(call_.call(),
+                         [this](bool ok) {
+                           reactor_->OnWritesDoneDone(ok);
+                           MaybeFinish();
+                         },
+                         &writes_done_ops_, /*can_inline=*/false);
+    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&writes_done_ops_);
+    } else {
+      writes_done_ops_at_start_ = true;
+    }
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(); }
+
+ private:
+  friend class ClientCallbackReaderWriterFactory<Request, Response>;
+
+  ClientCallbackReaderWriterImpl(grpc::internal::Call call,
+                                 ::grpc_impl::ClientContext* context,
+                                 ClientBidiReactor<Request, Response>* reactor)
+      : context_(context),
+        call_(call),
+        reactor_(reactor),
+        start_corked_(context_->initial_metadata_corked_) {
+    this->BindReactor(reactor);
+  }
+
+  ::grpc_impl::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientBidiReactor<Request, Response>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+  bool start_corked_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  ::grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  grpc::internal::CallbackWithSuccessTag write_tag_;
+  bool write_ops_at_start_{false};
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpClientSendClose>
+      writes_done_ops_;
+  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
+  bool writes_done_ops_at_start_{false};
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
+      read_ops_;
+  grpc::internal::CallbackWithSuccessTag read_tag_;
+  bool read_ops_at_start_{false};
+
+  // Minimum of 2 callbacks to pre-register for start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+  bool started_{false};
+};
+
+template <class Request, class Response>
+class ClientCallbackReaderWriterFactory {
+ public:
+  static void Create(::grpc::ChannelInterface* channel,
+                     const ::grpc::internal::RpcMethod& method,
+                     ::grpc_impl::ClientContext* context,
+                     ClientBidiReactor<Request, Response>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    ::grpc::g_core_codegen_interface->grpc_call_ref(call.call());
+    new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientCallbackReaderWriterImpl<Request, Response>)))
+        ClientCallbackReaderWriterImpl<Request, Response>(call, context,
+                                                          reactor);
+  }
+};
+
+template <class Response>
+class ClientCallbackReaderImpl : public ClientCallbackReader<Response> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackReaderImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void MaybeFinish() {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      ::grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackReaderImpl();
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      reactor->OnDone(s);
+    }
+  }
+
+  void StartCall() override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any backlog
+    // 3. Recv trailing metadata, on_completion callback
+    started_ = true;
+
+    start_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnReadInitialMetadataDone(ok);
+                     MaybeFinish();
+                   },
+                   &start_ops_, /*can_inline=*/false);
+    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    // Also set up the read tag so it doesn't have to be set up each time
+    read_tag_.Set(call_.call(),
+                  [this](bool ok) {
+                    reactor_->OnReadDone(ok);
+                    MaybeFinish();
+                  },
+                  &read_ops_, /*can_inline=*/false);
+    read_ops_.set_core_cq_tag(&read_tag_);
+    if (read_ops_at_start_) {
+      call_.PerformOps(&read_ops_);
+    }
+
+    finish_tag_.Set(call_.call(), [this](bool /*ok*/) { MaybeFinish(); },
+                    &finish_ops_, /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+  void Read(Response* msg) override {
+    read_ops_.RecvMessage(msg);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&read_ops_);
+    } else {
+      read_ops_at_start_ = true;
+    }
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(); }
+
+ private:
+  friend class ClientCallbackReaderFactory<Response>;
+
+  template <class Request>
+  ClientCallbackReaderImpl(::grpc::internal::Call call,
+                           ::grpc_impl::ClientContext* context,
+                           Request* request,
+                           ClientReadReactor<Response>* reactor)
+      : context_(context), call_(call), reactor_(reactor) {
+    this->BindReactor(reactor);
+    // TODO(vjpai): don't assert
+    GPR_CODEGEN_ASSERT(start_ops_.SendMessagePtr(request).ok());
+    start_ops_.ClientSendClose();
+  }
+
+  ::grpc_impl::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientReadReactor<Response>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpClientRecvStatus> finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  ::grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpRecvMessage<Response>>
+      read_ops_;
+  grpc::internal::CallbackWithSuccessTag read_tag_;
+  bool read_ops_at_start_{false};
+
+  // Minimum of 2 callbacks to pre-register for start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+  bool started_{false};
+};
+
+template <class Response>
+class ClientCallbackReaderFactory {
+ public:
+  template <class Request>
+  static void Create(::grpc::ChannelInterface* channel,
+                     const ::grpc::internal::RpcMethod& method,
+                     ::grpc_impl::ClientContext* context,
+                     const Request* request,
+                     ClientReadReactor<Response>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    ::grpc::g_core_codegen_interface->grpc_call_ref(call.call());
+    new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientCallbackReaderImpl<Response>)))
+        ClientCallbackReaderImpl<Response>(call, context, request, reactor);
+  }
+};
+
+template <class Request>
+class ClientCallbackWriterImpl : public ClientCallbackWriter<Request> {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackWriterImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void MaybeFinish() {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      ::grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackWriterImpl();
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      reactor->OnDone(s);
+    }
+  }
+
+  void StartCall() override {
+    // This call initiates two batches, plus any backlog, each with a callback
+    // 1. Send initial metadata (unless corked) + recv initial metadata
+    // 2. Any backlog
+    // 3. Recv trailing metadata, on_completion callback
+    started_ = true;
+
+    start_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnReadInitialMetadataDone(ok);
+                     MaybeFinish();
+                   },
+                   &start_ops_, /*can_inline=*/false);
+    if (!start_corked_) {
+      start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+    }
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    // Also set up the read and write tags so that they don't have to be set up
+    // each time
+    write_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnWriteDone(ok);
+                     MaybeFinish();
+                   },
+                   &write_ops_, /*can_inline=*/false);
+    write_ops_.set_core_cq_tag(&write_tag_);
+
+    if (write_ops_at_start_) {
+      call_.PerformOps(&write_ops_);
+    }
+
+    if (writes_done_ops_at_start_) {
+      call_.PerformOps(&writes_done_ops_);
+    }
+
+    finish_tag_.Set(call_.call(), [this](bool /*ok*/) { MaybeFinish(); },
+                    &finish_ops_, /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+  void Write(const Request* msg, ::grpc::WriteOptions options) override {
+    if (start_corked_) {
+      write_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                     context_->initial_metadata_flags());
+      start_corked_ = false;
+    }
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(vjpai): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg, options).ok());
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&write_ops_);
+    } else {
+      write_ops_at_start_ = true;
+    }
+  }
+  void WritesDone() override {
+    if (start_corked_) {
+      writes_done_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                           context_->initial_metadata_flags());
+      start_corked_ = false;
+    }
+    writes_done_ops_.ClientSendClose();
+    writes_done_tag_.Set(call_.call(),
+                         [this](bool ok) {
+                           reactor_->OnWritesDoneDone(ok);
+                           MaybeFinish();
+                         },
+                         &writes_done_ops_, /*can_inline=*/false);
+    writes_done_ops_.set_core_cq_tag(&writes_done_tag_);
+    callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed);
+    if (started_) {
+      call_.PerformOps(&writes_done_ops_);
+    } else {
+      writes_done_ops_at_start_ = true;
+    }
+  }
+
+  void AddHold(int holds) override {
+    callbacks_outstanding_.fetch_add(holds, std::memory_order_relaxed);
+  }
+  void RemoveHold() override { MaybeFinish(); }
+
+ private:
+  friend class ClientCallbackWriterFactory<Request>;
+
+  template <class Response>
+  ClientCallbackWriterImpl(::grpc::internal::Call call,
+                           ::grpc_impl::ClientContext* context,
+                           Response* response,
+                           ClientWriteReactor<Request>* reactor)
+      : context_(context),
+        call_(call),
+        reactor_(reactor),
+        start_corked_(context_->initial_metadata_corked_) {
+    this->BindReactor(reactor);
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+  }
+
+  ::grpc_impl::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientWriteReactor<Request>* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+  bool start_corked_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
+                            grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  ::grpc::Status finish_status_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose>
+      write_ops_;
+  grpc::internal::CallbackWithSuccessTag write_tag_;
+  bool write_ops_at_start_{false};
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpClientSendClose>
+      writes_done_ops_;
+  grpc::internal::CallbackWithSuccessTag writes_done_tag_;
+  bool writes_done_ops_at_start_{false};
+
+  // Minimum of 2 callbacks to pre-register for start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+  bool started_{false};
+};
+
+template <class Request>
+class ClientCallbackWriterFactory {
+ public:
+  template <class Response>
+  static void Create(::grpc::ChannelInterface* channel,
+                     const ::grpc::internal::RpcMethod& method,
+                     ::grpc_impl::ClientContext* context, Response* response,
+                     ClientWriteReactor<Request>* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    ::grpc::g_core_codegen_interface->grpc_call_ref(call.call());
+    new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientCallbackWriterImpl<Request>)))
+        ClientCallbackWriterImpl<Request>(call, context, response, reactor);
+  }
+};
+
+class ClientCallbackUnaryImpl final : public ClientCallbackUnary {
+ public:
+  // always allocated against a call arena, no memory free required
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    GPR_CODEGEN_ASSERT(size == sizeof(ClientCallbackUnaryImpl));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { GPR_CODEGEN_ASSERT(false); }
+
+  void StartCall() override {
+    // This call initiates two batches, each with a callback
+    // 1. Send initial metadata + write + writes done + recv initial metadata
+    // 2. Read message, recv trailing metadata
+    started_ = true;
+
+    start_tag_.Set(call_.call(),
+                   [this](bool ok) {
+                     reactor_->OnReadInitialMetadataDone(ok);
+                     MaybeFinish();
+                   },
+                   &start_ops_, /*can_inline=*/false);
+    start_ops_.SendInitialMetadata(&context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    start_ops_.RecvInitialMetadata(context_);
+    start_ops_.set_core_cq_tag(&start_tag_);
+    call_.PerformOps(&start_ops_);
+
+    finish_tag_.Set(call_.call(), [this](bool /*ok*/) { MaybeFinish(); },
+                    &finish_ops_, /*can_inline=*/false);
+    finish_ops_.ClientRecvStatus(context_, &finish_status_);
+    finish_ops_.set_core_cq_tag(&finish_tag_);
+    call_.PerformOps(&finish_ops_);
+  }
+
+  void MaybeFinish() {
+    if (GPR_UNLIKELY(callbacks_outstanding_.fetch_sub(
+                         1, std::memory_order_acq_rel) == 1)) {
+      ::grpc::Status s = std::move(finish_status_);
+      auto* reactor = reactor_;
+      auto* call = call_.call();
+      this->~ClientCallbackUnaryImpl();
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      reactor->OnDone(s);
+    }
+  }
+
+ private:
+  friend class ClientCallbackUnaryFactory;
+
+  template <class Request, class Response>
+  ClientCallbackUnaryImpl(::grpc::internal::Call call,
+                          ::grpc_impl::ClientContext* context, Request* request,
+                          Response* response, ClientUnaryReactor* reactor)
+      : context_(context), call_(call), reactor_(reactor) {
+    this->BindReactor(reactor);
+    // TODO(vjpai): don't assert
+    GPR_CODEGEN_ASSERT(start_ops_.SendMessagePtr(request).ok());
+    start_ops_.ClientSendClose();
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+  }
+
+  ::grpc_impl::ClientContext* const context_;
+  grpc::internal::Call call_;
+  ClientUnaryReactor* const reactor_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata,
+                            grpc::internal::CallOpSendMessage,
+                            grpc::internal::CallOpClientSendClose,
+                            grpc::internal::CallOpRecvInitialMetadata>
+      start_ops_;
+  grpc::internal::CallbackWithSuccessTag start_tag_;
+
+  grpc::internal::CallOpSet<grpc::internal::CallOpGenericRecvMessage,
+                            grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  grpc::internal::CallbackWithSuccessTag finish_tag_;
+  ::grpc::Status finish_status_;
+
+  // This call will have 2 callbacks: start and finish
+  std::atomic<intptr_t> callbacks_outstanding_{2};
+  bool started_{false};
+};
+
+class ClientCallbackUnaryFactory {
+ public:
+  template <class Request, class Response>
+  static void Create(::grpc::ChannelInterface* channel,
+                     const ::grpc::internal::RpcMethod& method,
+                     ::grpc_impl::ClientContext* context,
+                     const Request* request, Response* response,
+                     ClientUnaryReactor* reactor) {
+    grpc::internal::Call call =
+        channel->CreateCall(method, context, channel->CallbackCQ());
+
+    ::grpc::g_core_codegen_interface->grpc_call_ref(call.call());
+
+    new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        call.call(), sizeof(ClientCallbackUnaryImpl)))
+        ClientCallbackUnaryImpl(call, context, request, response, reactor);
+  }
+};
+
+}  // namespace internal
+}  // namespace grpc_impl
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CALLBACK_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context.h
new file mode 100644
index 0000000..0238946
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
+
+#include <grpcpp/impl/codegen/client_context_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ClientContext ClientContext;
+typedef ::grpc_impl::PropagationOptions PropagationOptions;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context_impl.h
new file mode 100644
index 0000000..b8e9072
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_context_impl.h	
@@ -0,0 +1,519 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// A ClientContext allows the person implementing a service client to:
+///
+/// - Add custom metadata key-value pairs that will propagated to the server
+/// side.
+/// - Control call settings such as compression and authentication.
+/// - Initial and trailing metadata coming from the server.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call they are invoked with, that
+/// is to say, they aren't sticky. Some of these settings, such as the
+/// compression options, can be made persistent at channel construction time
+/// (see \a grpc::CreateCustomChannel).
+///
+/// \warning ClientContext instances should \em not be reused across rpcs.
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_IMPL_H
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/impl/codegen/propagation_bits.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/create_auth_context.h>
+#include <grpcpp/impl/codegen/metadata_map.h>
+#include <grpcpp/impl/codegen/rpc_method.h>
+#include <grpcpp/impl/codegen/security/auth_context.h>
+#include <grpcpp/impl/codegen/slice.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+#include <grpcpp/impl/codegen/sync.h>
+#include <grpcpp/impl/codegen/time.h>
+
+struct census_context;
+struct grpc_call;
+
+namespace grpc {
+
+class ChannelInterface;
+
+namespace internal {
+class RpcMethod;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+class CallOpClientRecvStatus;
+class CallOpRecvInitialMetadata;
+class ServerContextImpl;
+}  // namespace internal
+
+namespace testing {
+class InteropClientContextInspector;
+}  // namespace testing
+}  // namespace grpc
+namespace grpc_impl {
+
+namespace internal {
+template <class InputMessage, class OutputMessage>
+class CallbackUnaryCallImpl;
+template <class Request, class Response>
+class ClientCallbackReaderWriterImpl;
+template <class Response>
+class ClientCallbackReaderImpl;
+template <class Request>
+class ClientCallbackWriterImpl;
+class ClientCallbackUnaryImpl;
+class ClientContextAccessor;
+}  // namespace internal
+
+class CallCredentials;
+class Channel;
+class CompletionQueue;
+class ServerContext;
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+template <class R>
+class ClientAsyncReader;
+template <class W>
+class ClientAsyncWriter;
+template <class W, class R>
+class ClientAsyncReaderWriter;
+template <class R>
+class ClientAsyncResponseReader;
+
+class ServerContextBase;
+class CallbackServerContext;
+
+/// Options for \a ClientContext::FromServerContext specifying which traits from
+/// the \a ServerContext to propagate (copy) from it into a new \a
+/// ClientContext.
+///
+/// \see ClientContext::FromServerContext
+class PropagationOptions {
+ public:
+  PropagationOptions() : propagate_(GRPC_PROPAGATE_DEFAULTS) {}
+
+  PropagationOptions& enable_deadline_propagation() {
+    propagate_ |= GRPC_PROPAGATE_DEADLINE;
+    return *this;
+  }
+
+  PropagationOptions& disable_deadline_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_DEADLINE;
+    return *this;
+  }
+
+  PropagationOptions& enable_census_stats_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& disable_census_stats_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CENSUS_STATS_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& enable_census_tracing_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& disable_census_tracing_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT;
+    return *this;
+  }
+
+  PropagationOptions& enable_cancellation_propagation() {
+    propagate_ |= GRPC_PROPAGATE_CANCELLATION;
+    return *this;
+  }
+
+  PropagationOptions& disable_cancellation_propagation() {
+    propagate_ &= ~GRPC_PROPAGATE_CANCELLATION;
+    return *this;
+  }
+
+  uint32_t c_bitmask() const { return propagate_; }
+
+ private:
+  uint32_t propagate_;
+};
+
+/// A ClientContext allows the person implementing a service client to:
+///
+/// - Add custom metadata key-value pairs that will propagated to the server
+///   side.
+/// - Control call settings such as compression and authentication.
+/// - Initial and trailing metadata coming from the server.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call they are invoked with, that
+/// is to say, they aren't sticky. Some of these settings, such as the
+/// compression options, can be made persistent at channel construction time
+/// (see \a grpc::CreateCustomChannel).
+///
+/// \warning ClientContext instances should \em not be reused across rpcs.
+/// \warning The ClientContext instance used for creating an rpc must remain
+///          alive and valid for the lifetime of the rpc.
+class ClientContext {
+ public:
+  ClientContext();
+  ~ClientContext();
+
+  /// Create a new \a ClientContext as a child of an incoming server call,
+  /// according to \a options (\see PropagationOptions).
+  ///
+  /// \param server_context The source server context to use as the basis for
+  /// constructing the client context.
+  /// \param options The options controlling what to copy from the \a
+  /// server_context.
+  ///
+  /// \return A newly constructed \a ClientContext instance based on \a
+  /// server_context, with traits propagated (copied) according to \a options.
+  static std::unique_ptr<ClientContext> FromServerContext(
+      const grpc_impl::ServerContext& server_context,
+      PropagationOptions options = PropagationOptions());
+  static std::unique_ptr<ClientContext> FromCallbackServerContext(
+      const grpc_impl::CallbackServerContext& server_context,
+      PropagationOptions options = PropagationOptions());
+
+  /// Add the (\a meta_key, \a meta_value) pair to the metadata associated with
+  /// a client call. These are made available at the server side by the \a
+  /// grpc::ServerContext::client_metadata() method.
+  ///
+  /// \warning This method should only be called before invoking the rpc.
+  ///
+  /// \param meta_key The metadata key. If \a meta_value is binary data, it must
+  /// end in "-bin".
+  /// \param meta_value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  void AddMetadata(const grpc::string& meta_key,
+                   const grpc::string& meta_value);
+
+  /// Return a collection of initial metadata key-value pairs. Note that keys
+  /// may happen more than once (ie, a \a std::multimap is returned).
+  ///
+  /// \warning This method should only be called after initial metadata has been
+  /// received. For streaming calls, see \a
+  /// ClientReaderInterface::WaitForInitialMetadata().
+  ///
+  /// \return A multimap of initial metadata key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>&
+  GetServerInitialMetadata() const {
+    GPR_CODEGEN_ASSERT(initial_metadata_received_);
+    return *recv_initial_metadata_.map();
+  }
+
+  /// Return a collection of trailing metadata key-value pairs. Note that keys
+  /// may happen more than once (ie, a \a std::multimap is returned).
+  ///
+  /// \warning This method is only callable once the stream has finished.
+  ///
+  /// \return A multimap of metadata trailing key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>&
+  GetServerTrailingMetadata() const {
+    // TODO(yangg) check finished
+    return *trailing_metadata_.map();
+  }
+
+  /// Set the deadline for the client call.
+  ///
+  /// \warning This method should only be called before invoking the rpc.
+  ///
+  /// \param deadline the deadline for the client call. Units are determined by
+  /// the type used. The deadline is an absolute (not relative) time.
+  template <typename T>
+  void set_deadline(const T& deadline) {
+    grpc::TimePoint<T> deadline_tp(deadline);
+    deadline_ = deadline_tp.raw_time();
+  }
+
+  /// EXPERIMENTAL: Indicate that this request is idempotent.
+  /// By default, RPCs are assumed to <i>not</i> be idempotent.
+  ///
+  /// If true, the gRPC library assumes that it's safe to initiate
+  /// this RPC multiple times.
+  void set_idempotent(bool idempotent) { idempotent_ = idempotent; }
+
+  /// EXPERIMENTAL: Set this request to be cacheable.
+  /// If set, grpc is free to use the HTTP GET verb for sending the request,
+  /// with the possibility of receiving a cached response.
+  void set_cacheable(bool cacheable) { cacheable_ = cacheable; }
+
+  /// EXPERIMENTAL: Trigger wait-for-ready or not on this request.
+  /// See https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md.
+  /// If set, if an RPC is made when a channel's connectivity state is
+  /// TRANSIENT_FAILURE or CONNECTING, the call will not "fail fast",
+  /// and the channel will wait until the channel is READY before making the
+  /// call.
+  void set_wait_for_ready(bool wait_for_ready) {
+    wait_for_ready_ = wait_for_ready;
+    wait_for_ready_explicitly_set_ = true;
+  }
+
+  /// DEPRECATED: Use set_wait_for_ready() instead.
+  void set_fail_fast(bool fail_fast) { set_wait_for_ready(!fail_fast); }
+
+  /// Return the deadline for the client call.
+  std::chrono::system_clock::time_point deadline() const {
+    return grpc::Timespec2Timepoint(deadline_);
+  }
+
+  /// Return a \a gpr_timespec representation of the client call's deadline.
+  gpr_timespec raw_deadline() const { return deadline_; }
+
+  /// Set the per call authority header (see
+  /// https://tools.ietf.org/html/rfc7540#section-8.1.2.3).
+  void set_authority(const grpc::string& authority) { authority_ = authority; }
+
+  /// Return the authentication context for the associated client call.
+  /// It is only valid to call this during the lifetime of the client call.
+  ///
+  /// \see grpc::AuthContext.
+  std::shared_ptr<const grpc::AuthContext> auth_context() const {
+    if (auth_context_.get() == nullptr) {
+      auth_context_ = grpc::CreateAuthContext(call_);
+    }
+    return auth_context_;
+  }
+
+  /// Set credentials for the client call.
+  ///
+  /// A credentials object encapsulates all the state needed by a client to
+  /// authenticate with a server and make various assertions, e.g., about the
+  /// client’s identity, role, or whether it is authorized to make a particular
+  /// call.
+  ///
+  /// It is legal to call this only before initial metadata is sent.
+  ///
+  /// \see  https://grpc.io/docs/guides/auth.html
+  void set_credentials(
+      const std::shared_ptr<grpc_impl::CallCredentials>& creds);
+
+  /// EXPERIMENTAL debugging API
+  ///
+  /// Returns the credentials for the client call. This should be used only in
+  /// tests and for diagnostic purposes, and should not be used by application
+  /// logic.
+  std::shared_ptr<grpc_impl::CallCredentials> credentials() { return creds_; }
+
+  /// Return the compression algorithm the client call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints.
+  grpc_compression_algorithm compression_algorithm() const {
+    return compression_algorithm_;
+  }
+
+  /// Set \a algorithm to be the compression algorithm used for the client call.
+  ///
+  /// \param algorithm The compression algorithm used for the client call.
+  void set_compression_algorithm(grpc_compression_algorithm algorithm);
+
+  /// Flag whether the initial metadata should be \a corked
+  ///
+  /// If \a corked is true, then the initial metadata will be coalesced with the
+  /// write of first message in the stream. As a result, any tag set for the
+  /// initial metadata operation (starting a client-streaming or bidi-streaming
+  /// RPC) will not actually be sent to the completion queue or delivered
+  /// via Next.
+  ///
+  /// \param corked The flag indicating whether the initial metadata is to be
+  /// corked or not.
+  void set_initial_metadata_corked(bool corked) {
+    initial_metadata_corked_ = corked;
+  }
+
+  /// Return the peer uri in a string.
+  /// It is only valid to call this during the lifetime of the client call.
+  ///
+  /// \warning This value is never authenticated or subject to any security
+  /// related code. It must not be used for any authentication related
+  /// functionality. Instead, use auth_context.
+  ///
+  /// \return The call's peer URI.
+  grpc::string peer() const;
+
+  /// Sets the census context.
+  /// It is only valid to call this before the client call is created. A common
+  /// place of setting census context is from within the DefaultConstructor
+  /// method of GlobalCallbacks.
+  void set_census_context(struct census_context* ccp) { census_context_ = ccp; }
+
+  /// Returns the census context that has been set, or nullptr if not set.
+  struct census_context* census_context() const {
+    return census_context_;
+  }
+
+  /// Send a best-effort out-of-band cancel on the call associated with
+  /// this client context.  The call could be in any stage; e.g., if it is
+  /// already finished, it may still return success.
+  ///
+  /// There is no guarantee the call will be cancelled.
+  ///
+  /// Note that TryCancel() does not change any of the tags that are pending
+  /// on the completion queue. All pending tags will still be delivered
+  /// (though their ok result may reflect the effect of cancellation).
+  void TryCancel();
+
+  /// Global Callbacks
+  ///
+  /// Can be set exactly once per application to install hooks whenever
+  /// a client context is constructed and destructed.
+  class GlobalCallbacks {
+   public:
+    virtual ~GlobalCallbacks() {}
+    virtual void DefaultConstructor(ClientContext* context) = 0;
+    virtual void Destructor(ClientContext* context) = 0;
+  };
+  static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
+
+  /// Should be used for framework-level extensions only.
+  /// Applications never need to call this method.
+  grpc_call* c_call() { return call_; }
+
+  /// EXPERIMENTAL debugging API
+  ///
+  /// if status is not ok() for an RPC, this will return a detailed string
+  /// of the gRPC Core error that led to the failure. It should not be relied
+  /// upon for anything other than gaining more debug data in failure cases.
+  grpc::string debug_error_string() const { return debug_error_string_; }
+
+ private:
+  // Disallow copy and assign.
+  ClientContext(const ClientContext&);
+  ClientContext& operator=(const ClientContext&);
+
+  friend class ::grpc::testing::InteropClientContextInspector;
+  friend class ::grpc::internal::CallOpClientRecvStatus;
+  friend class ::grpc::internal::CallOpRecvInitialMetadata;
+  friend class ::grpc_impl::Channel;
+  template <class R>
+  friend class ::grpc_impl::ClientReader;
+  template <class W>
+  friend class ::grpc_impl::ClientWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::ClientReaderWriter;
+  template <class R>
+  friend class ::grpc_impl::ClientAsyncReader;
+  template <class W>
+  friend class ::grpc_impl::ClientAsyncWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::ClientAsyncReaderWriter;
+  template <class R>
+  friend class ::grpc_impl::ClientAsyncResponseReader;
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc::internal::BlockingUnaryCallImpl;
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc_impl::internal::CallbackUnaryCallImpl;
+  template <class Request, class Response>
+  friend class ::grpc_impl::internal::ClientCallbackReaderWriterImpl;
+  template <class Response>
+  friend class ::grpc_impl::internal::ClientCallbackReaderImpl;
+  template <class Request>
+  friend class ::grpc_impl::internal::ClientCallbackWriterImpl;
+  friend class ::grpc_impl::internal::ClientCallbackUnaryImpl;
+  friend class ::grpc_impl::internal::ClientContextAccessor;
+
+  // Used by friend class CallOpClientRecvStatus
+  void set_debug_error_string(const grpc::string& debug_error_string) {
+    debug_error_string_ = debug_error_string;
+  }
+
+  grpc_call* call() const { return call_; }
+  void set_call(grpc_call* call,
+                const std::shared_ptr<::grpc_impl::Channel>& channel);
+
+  grpc::experimental::ClientRpcInfo* set_client_rpc_info(
+      const char* method, grpc::internal::RpcMethod::RpcType type,
+      grpc::ChannelInterface* channel,
+      const std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>& creators,
+      size_t interceptor_pos) {
+    rpc_info_ = grpc::experimental::ClientRpcInfo(this, type, method, channel);
+    rpc_info_.RegisterInterceptors(creators, interceptor_pos);
+    return &rpc_info_;
+  }
+
+  uint32_t initial_metadata_flags() const {
+    return (idempotent_ ? GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST : 0) |
+           (wait_for_ready_ ? GRPC_INITIAL_METADATA_WAIT_FOR_READY : 0) |
+           (cacheable_ ? GRPC_INITIAL_METADATA_CACHEABLE_REQUEST : 0) |
+           (wait_for_ready_explicitly_set_
+                ? GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET
+                : 0) |
+           (initial_metadata_corked_ ? GRPC_INITIAL_METADATA_CORKED : 0);
+  }
+
+  grpc::string authority() { return authority_; }
+
+  void SendCancelToInterceptors();
+
+  static std::unique_ptr<ClientContext> FromInternalServerContext(
+      const grpc_impl::ServerContextBase& server_context,
+      PropagationOptions options);
+
+  bool initial_metadata_received_;
+  bool wait_for_ready_;
+  bool wait_for_ready_explicitly_set_;
+  bool idempotent_;
+  bool cacheable_;
+  std::shared_ptr<::grpc_impl::Channel> channel_;
+  grpc::internal::Mutex mu_;
+  grpc_call* call_;
+  bool call_canceled_;
+  gpr_timespec deadline_;
+  grpc::string authority_;
+  std::shared_ptr<grpc_impl::CallCredentials> creds_;
+  mutable std::shared_ptr<const grpc::AuthContext> auth_context_;
+  struct census_context* census_context_;
+  std::multimap<grpc::string, grpc::string> send_initial_metadata_;
+  mutable grpc::internal::MetadataMap recv_initial_metadata_;
+  mutable grpc::internal::MetadataMap trailing_metadata_;
+
+  grpc_call* propagate_from_call_;
+  PropagationOptions propagation_options_;
+
+  grpc_compression_algorithm compression_algorithm_;
+  bool initial_metadata_corked_;
+
+  grpc::string debug_error_string_;
+
+  grpc::experimental::ClientRpcInfo rpc_info_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_CONTEXT_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_interceptor.h
new file mode 100644
index 0000000..03cb41f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_interceptor.h	
@@ -0,0 +1,194 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
+
+#include <memory>
+#include <vector>
+
+#include <grpcpp/impl/codegen/interceptor.h>
+#include <grpcpp/impl/codegen/rpc_method.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+
+namespace grpc_impl {
+
+class Channel;
+class ClientContext;
+}  // namespace grpc_impl
+
+namespace grpc {
+
+namespace internal {
+class InterceptorBatchMethodsImpl;
+}
+
+namespace experimental {
+class ClientRpcInfo;
+
+// A factory interface for creation of client interceptors. A vector of
+// factories can be provided at channel creation which will be used to create a
+// new vector of client interceptors per RPC. Client interceptor authors should
+// create a subclass of ClientInterceptorFactorInterface which creates objects
+// of their interceptors.
+class ClientInterceptorFactoryInterface {
+ public:
+  virtual ~ClientInterceptorFactoryInterface() {}
+  // Returns a pointer to an Interceptor object on successful creation, nullptr
+  // otherwise. If nullptr is returned, this server interceptor factory is
+  // ignored for the purposes of that RPC.
+  virtual Interceptor* CreateClientInterceptor(ClientRpcInfo* info) = 0;
+};
+}  // namespace experimental
+
+namespace internal {
+extern experimental::ClientInterceptorFactoryInterface*
+    g_global_client_interceptor_factory;
+}
+
+/// ClientRpcInfo represents the state of a particular RPC as it
+/// appears to an interceptor. It is created and owned by the library and
+/// passed to the CreateClientInterceptor method of the application's
+/// ClientInterceptorFactoryInterface implementation
+namespace experimental {
+class ClientRpcInfo {
+ public:
+  // TODO(yashykt): Stop default-constructing ClientRpcInfo and remove UNKNOWN
+  //                from the list of possible Types.
+  /// Type categorizes RPCs by unary or streaming type
+  enum class Type {
+    UNARY,
+    CLIENT_STREAMING,
+    SERVER_STREAMING,
+    BIDI_STREAMING,
+    UNKNOWN  // UNKNOWN is not API and will be removed later
+  };
+
+  ~ClientRpcInfo() {}
+
+  // Delete copy constructor but allow default move constructor
+  ClientRpcInfo(const ClientRpcInfo&) = delete;
+  ClientRpcInfo(ClientRpcInfo&&) = default;
+
+  // Getter methods
+
+  /// Return the fully-specified method name
+  const char* method() const { return method_; }
+
+  /// Return a pointer to the channel on which the RPC is being sent
+  ChannelInterface* channel() { return channel_; }
+
+  /// Return a pointer to the underlying ClientContext structure associated
+  /// with the RPC to support features that apply to it
+  grpc_impl::ClientContext* client_context() { return ctx_; }
+
+  /// Return the type of the RPC (unary or a streaming flavor)
+  Type type() const { return type_; }
+
+ private:
+  static_assert(Type::UNARY ==
+                    static_cast<Type>(internal::RpcMethod::NORMAL_RPC),
+                "violated expectation about Type enum");
+  static_assert(Type::CLIENT_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::CLIENT_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::SERVER_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::SERVER_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::BIDI_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::BIDI_STREAMING),
+                "violated expectation about Type enum");
+
+  // Default constructor should only be used by ClientContext
+  ClientRpcInfo() = default;
+
+  // Constructor will only be called from ClientContext
+  ClientRpcInfo(grpc_impl::ClientContext* ctx,
+                internal::RpcMethod::RpcType type, const char* method,
+                grpc::ChannelInterface* channel)
+      : ctx_(ctx),
+        type_(static_cast<Type>(type)),
+        method_(method),
+        channel_(channel) {}
+
+  // Move assignment should only be used by ClientContext
+  // TODO(yashykt): Delete move assignment
+  ClientRpcInfo& operator=(ClientRpcInfo&&) = default;
+
+  // Runs interceptor at pos \a pos.
+  void RunInterceptor(
+      experimental::InterceptorBatchMethods* interceptor_methods, size_t pos) {
+    GPR_CODEGEN_ASSERT(pos < interceptors_.size());
+    interceptors_[pos]->Intercept(interceptor_methods);
+  }
+
+  void RegisterInterceptors(
+      const std::vector<std::unique_ptr<
+          experimental::ClientInterceptorFactoryInterface>>& creators,
+      size_t interceptor_pos) {
+    if (interceptor_pos > creators.size()) {
+      // No interceptors to register
+      return;
+    }
+    // NOTE: The following is not a range-based for loop because it will only
+    //       iterate over a portion of the creators vector.
+    for (auto it = creators.begin() + interceptor_pos; it != creators.end();
+         ++it) {
+      auto* interceptor = (*it)->CreateClientInterceptor(this);
+      if (interceptor != nullptr) {
+        interceptors_.push_back(
+            std::unique_ptr<experimental::Interceptor>(interceptor));
+      }
+    }
+    if (internal::g_global_client_interceptor_factory != nullptr) {
+      interceptors_.push_back(std::unique_ptr<experimental::Interceptor>(
+          internal::g_global_client_interceptor_factory
+              ->CreateClientInterceptor(this)));
+    }
+  }
+
+  grpc_impl::ClientContext* ctx_ = nullptr;
+  // TODO(yashykt): make type_ const once move-assignment is deleted
+  Type type_{Type::UNKNOWN};
+  const char* method_ = nullptr;
+  grpc::ChannelInterface* channel_ = nullptr;
+  std::vector<std::unique_ptr<experimental::Interceptor>> interceptors_;
+  bool hijacked_ = false;
+  size_t hijacked_interceptor_ = 0;
+
+  friend class internal::InterceptorBatchMethodsImpl;
+  friend class grpc_impl::ClientContext;
+};
+
+// PLEASE DO NOT USE THIS. ALWAYS PREFER PER CHANNEL INTERCEPTORS OVER A GLOBAL
+// INTERCEPTOR. IF USAGE IS ABSOLUTELY NECESSARY, PLEASE READ THE SAFETY NOTES.
+// Registers a global client interceptor factory object, which is used for all
+// RPCs made in this process. The application is responsible for maintaining the
+// life of the object while gRPC operations are in progress. The global
+// interceptor factory should only be registered once at the start of the
+// process before any gRPC operations have begun.
+void RegisterGlobalClientInterceptorFactory(
+    ClientInterceptorFactoryInterface* factory);
+
+// For testing purposes only
+void TestOnlyResetGlobalClientInterceptorFactory();
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_unary_call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_unary_call.h
new file mode 100644
index 0000000..7f80e57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/client_unary_call.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
+#define GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+class ClientContext;
+}  // namespace grpc_impl
+namespace grpc {
+
+namespace internal {
+class RpcMethod;
+/// Wrapper that performs a blocking unary call
+template <class InputMessage, class OutputMessage>
+Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
+                         grpc_impl::ClientContext* context,
+                         const InputMessage& request, OutputMessage* result) {
+  return BlockingUnaryCallImpl<InputMessage, OutputMessage>(
+             channel, method, context, request, result)
+      .status();
+}
+
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl {
+ public:
+  BlockingUnaryCallImpl(ChannelInterface* channel, const RpcMethod& method,
+                        grpc_impl::ClientContext* context,
+                        const InputMessage& request, OutputMessage* result) {
+    ::grpc_impl::CompletionQueue cq(grpc_completion_queue_attributes{
+        GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+        nullptr});  // Pluckable completion queue
+    ::grpc::internal::Call call(channel->CreateCall(method, context, &cq));
+    CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+              CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>,
+              CallOpClientSendClose, CallOpClientRecvStatus>
+        ops;
+    status_ = ops.SendMessagePtr(&request);
+    if (!status_.ok()) {
+      return;
+    }
+    ops.SendInitialMetadata(&context->send_initial_metadata_,
+                            context->initial_metadata_flags());
+    ops.RecvInitialMetadata(context);
+    ops.RecvMessage(result);
+    ops.AllowNoMessage();
+    ops.ClientSendClose();
+    ops.ClientRecvStatus(context, &status_);
+    call.PerformOps(&ops);
+    cq.Pluck(&ops);
+    // Some of the ops might fail. If the ops fail in the core layer, status
+    // would reflect the error. But, if the ops fail in the C++ layer, the
+    // status would still be the same as the one returned by gRPC Core. This can
+    // happen if deserialization of the message fails.
+    // TODO(yashykt): If deserialization fails, but the status received is OK,
+    // then it might be a good idea to change the status to something better
+    // than StatusCode::UNIMPLEMENTED to reflect this.
+    if (!ops.got_message && status_.ok()) {
+      status_ = Status(StatusCode::UNIMPLEMENTED,
+                       "No message returned for unary request");
+    }
+  }
+  Status status() { return status_; }
+
+ private:
+  Status status_;
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CLIENT_UNARY_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue.h
new file mode 100644
index 0000000..f67a378
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
+#define GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
+
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::CompletionQueue CompletionQueue;
+typedef ::grpc_impl::ServerCompletionQueue ServerCompletionQueue;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_impl.h
new file mode 100644
index 0000000..c65b121
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_impl.h	
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// A completion queue implements a concurrent producer-consumer queue, with
+/// two main API-exposed methods: \a Next and \a AsyncNext. These
+/// methods are the essential component of the gRPC C++ asynchronous API.
+/// There is also a \a Shutdown method to indicate that a given completion queue
+/// will no longer have regular events. This must be called before the
+/// completion queue is destroyed.
+/// All completion queue APIs are thread-safe and may be used concurrently with
+/// any other completion queue API invocation; it is acceptable to have
+/// multiple threads calling \a Next or \a AsyncNext on the same or different
+/// completion queues, or to call these methods concurrently with a \a Shutdown
+/// elsewhere.
+/// \remark{All other API calls on completion queue should be completed before
+/// a completion queue destructor is called.}
+#ifndef GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_IMPL_H
+
+#include <list>
+
+#include <grpc/impl/codegen/atm.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/sync.h>
+#include <grpcpp/impl/codegen/time.h>
+
+struct grpc_completion_queue;
+
+namespace grpc_impl {
+
+class Channel;
+class Server;
+class ServerBuilder;
+template <class R>
+class ClientReader;
+template <class W>
+class ClientWriter;
+template <class W, class R>
+class ClientReaderWriter;
+template <class R>
+class ServerReader;
+template <class W>
+class ServerWriter;
+class ServerContextBase;
+namespace internal {
+template <class W, class R>
+class ServerReaderWriterBody;
+
+template <class ServiceType, class RequestType, class ResponseType>
+class RpcMethodHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler;
+template <::grpc::StatusCode code>
+class ErrorMethodHandler;
+}  // namespace internal
+}  // namespace grpc_impl
+namespace grpc {
+
+class ChannelInterface;
+class ServerInterface;
+
+namespace internal {
+class CompletionQueueTag;
+class RpcMethod;
+template <class InputMessage, class OutputMessage>
+class BlockingUnaryCallImpl;
+template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
+class CallOpSet;
+}  // namespace internal
+
+extern CoreCodegenInterface* g_core_codegen_interface;
+
+}  // namespace grpc
+
+namespace grpc_impl {
+
+/// A thin wrapper around \ref grpc_completion_queue (see \ref
+/// src/core/lib/surface/completion_queue.h).
+/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
+/// performance servers.
+class CompletionQueue : private ::grpc::GrpcLibraryCodegen {
+ public:
+  /// Default constructor. Implicitly creates a \a grpc_completion_queue
+  /// instance.
+  CompletionQueue()
+      : CompletionQueue(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_NEXT, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}) {}
+
+  /// Wrap \a take, taking ownership of the instance.
+  ///
+  /// \param take The completion queue instance to wrap. Ownership is taken.
+  explicit CompletionQueue(grpc_completion_queue* take);
+
+  /// Destructor. Destroys the owned wrapped completion queue / instance.
+  ~CompletionQueue() {
+    ::grpc::g_core_codegen_interface->grpc_completion_queue_destroy(cq_);
+  }
+
+  /// Tri-state return for AsyncNext: SHUTDOWN, GOT_EVENT, TIMEOUT.
+  enum NextStatus {
+    SHUTDOWN,   ///< The completion queue has been shutdown and fully-drained
+    GOT_EVENT,  ///< Got a new event; \a tag will be filled in with its
+                ///< associated value; \a ok indicating its success.
+    TIMEOUT     ///< deadline was reached.
+  };
+
+  /// Read from the queue, blocking until an event is available or the queue is
+  /// shutting down.
+  ///
+  /// \param tag [out] Updated to point to the read event's tag.
+  /// \param ok [out] true if read a successful event, false otherwise.
+  ///
+  /// Note that each tag sent to the completion queue (through RPC operations
+  /// or alarms) will be delivered out of the completion queue by a call to
+  /// Next (or a related method), regardless of whether the operation succeeded
+  /// or not. Success here means that this operation completed in the normal
+  /// valid manner.
+  ///
+  /// Server-side RPC request: \a ok indicates that the RPC has indeed
+  /// been started. If it is false, the server has been Shutdown
+  /// before this particular call got matched to an incoming RPC.
+  ///
+  /// Client-side StartCall/RPC invocation: \a ok indicates that the RPC is
+  /// going to go to the wire. If it is false, it not going to the wire. This
+  /// would happen if the channel is either permanently broken or
+  /// transiently broken but with the fail-fast option. (Note that async unary
+  /// RPCs don't post a CQ tag at this point, nor do client-streaming
+  /// or bidi-streaming RPCs that have the initial metadata corked option set.)
+  ///
+  /// Client-side Write, Client-side WritesDone, Server-side Write,
+  /// Server-side Finish, Server-side SendInitialMetadata (which is
+  /// typically included in Write or Finish when not done explicitly):
+  /// \a ok means that the data/metadata/status/etc is going to go to the
+  /// wire. If it is false, it not going to the wire because the call
+  /// is already dead (i.e., canceled, deadline expired, other side
+  /// dropped the channel, etc).
+  ///
+  /// Client-side Read, Server-side Read, Client-side
+  /// RecvInitialMetadata (which is typically included in Read if not
+  /// done explicitly): \a ok indicates whether there is a valid message
+  /// that got read. If not, you know that there are certainly no more
+  /// messages that can ever be read from this stream. For the client-side
+  /// operations, this only happens because the call is dead. For the
+  /// server-sider operation, though, this could happen because the client
+  /// has done a WritesDone already.
+  ///
+  /// Client-side Finish: \a ok should always be true
+  ///
+  /// Server-side AsyncNotifyWhenDone: \a ok should always be true
+  ///
+  /// Alarm: \a ok is true if it expired, false if it was canceled
+  ///
+  /// \return true if got an event, false if the queue is fully drained and
+  ///         shut down.
+  bool Next(void** tag, bool* ok) {
+    return (AsyncNextInternal(tag, ok,
+                              ::grpc::g_core_codegen_interface->gpr_inf_future(
+                                  GPR_CLOCK_REALTIME)) != SHUTDOWN);
+  }
+
+  /// Read from the queue, blocking up to \a deadline (or the queue's shutdown).
+  /// Both \a tag and \a ok are updated upon success (if an event is available
+  /// within the \a deadline).  A \a tag points to an arbitrary location usually
+  /// employed to uniquely identify an event.
+  ///
+  /// \param tag [out] Upon success, updated to point to the event's tag.
+  /// \param ok [out] Upon success, true if a successful event, false otherwise
+  ///        See documentation for CompletionQueue::Next for explanation of ok
+  /// \param deadline [in] How long to block in wait for an event.
+  ///
+  /// \return The type of event read.
+  template <typename T>
+  NextStatus AsyncNext(void** tag, bool* ok, const T& deadline) {
+    ::grpc::TimePoint<T> deadline_tp(deadline);
+    return AsyncNextInternal(tag, ok, deadline_tp.raw_time());
+  }
+
+  /// EXPERIMENTAL
+  /// First executes \a F, then reads from the queue, blocking up to
+  /// \a deadline (or the queue's shutdown).
+  /// Both \a tag and \a ok are updated upon success (if an event is available
+  /// within the \a deadline).  A \a tag points to an arbitrary location usually
+  /// employed to uniquely identify an event.
+  ///
+  /// \param f [in] Function to execute before calling AsyncNext on this queue.
+  /// \param tag [out] Upon success, updated to point to the event's tag.
+  /// \param ok [out] Upon success, true if read a regular event, false
+  /// otherwise.
+  /// \param deadline [in] How long to block in wait for an event.
+  ///
+  /// \return The type of event read.
+  template <typename T, typename F>
+  NextStatus DoThenAsyncNext(F&& f, void** tag, bool* ok, const T& deadline) {
+    CompletionQueueTLSCache cache = CompletionQueueTLSCache(this);
+    f();
+    if (cache.Flush(tag, ok)) {
+      return GOT_EVENT;
+    } else {
+      return AsyncNext(tag, ok, deadline);
+    }
+  }
+
+  /// Request the shutdown of the queue.
+  ///
+  /// \warning This method must be called at some point if this completion queue
+  /// is accessed with Next or AsyncNext. \a Next will not return false
+  /// until this method has been called and all pending tags have been drained.
+  /// (Likewise for \a AsyncNext returning \a NextStatus::SHUTDOWN .)
+  /// Only once either one of these methods does that (that is, once the queue
+  /// has been \em drained) can an instance of this class be destroyed.
+  /// Also note that applications must ensure that no work is enqueued on this
+  /// completion queue after this method is called.
+  void Shutdown();
+
+  /// Returns a \em raw pointer to the underlying \a grpc_completion_queue
+  /// instance.
+  ///
+  /// \warning Remember that the returned instance is owned. No transfer of
+  /// owership is performed.
+  grpc_completion_queue* cq() { return cq_; }
+
+ protected:
+  /// Private constructor of CompletionQueue only visible to friend classes
+  CompletionQueue(const grpc_completion_queue_attributes& attributes) {
+    cq_ = ::grpc::g_core_codegen_interface->grpc_completion_queue_create(
+        ::grpc::g_core_codegen_interface->grpc_completion_queue_factory_lookup(
+            &attributes),
+        &attributes, NULL);
+    InitialAvalanching();  // reserve this for the future shutdown
+  }
+
+ private:
+  // Friends for access to server registration lists that enable checking and
+  // logging on shutdown
+  friend class ::grpc_impl::ServerBuilder;
+  friend class ::grpc_impl::Server;
+
+  // Friend synchronous wrappers so that they can access Pluck(), which is
+  // a semi-private API geared towards the synchronous implementation.
+  template <class R>
+  friend class ::grpc_impl::ClientReader;
+  template <class W>
+  friend class ::grpc_impl::ClientWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::ClientReaderWriter;
+  template <class R>
+  friend class ::grpc_impl::ServerReader;
+  template <class W>
+  friend class ::grpc_impl::ServerWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::internal::ServerReaderWriterBody;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::RpcMethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ClientStreamingHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ServerStreamingHandler;
+  template <class Streamer, bool WriteNeeded>
+  friend class ::grpc_impl::internal::TemplatedBidiStreamingHandler;
+  template <::grpc::StatusCode code>
+  friend class ::grpc_impl::internal::ErrorMethodHandler;
+  friend class ::grpc_impl::ServerContextBase;
+  friend class ::grpc::ServerInterface;
+  template <class InputMessage, class OutputMessage>
+  friend class ::grpc::internal::BlockingUnaryCallImpl;
+
+  // Friends that need access to constructor for callback CQ
+  friend class ::grpc_impl::Channel;
+
+  // For access to Register/CompleteAvalanching
+  template <class Op1, class Op2, class Op3, class Op4, class Op5, class Op6>
+  friend class ::grpc::internal::CallOpSet;
+
+  /// EXPERIMENTAL
+  /// Creates a Thread Local cache to store the first event
+  /// On this completion queue queued from this thread.  Once
+  /// initialized, it must be flushed on the same thread.
+  class CompletionQueueTLSCache {
+   public:
+    CompletionQueueTLSCache(CompletionQueue* cq);
+    ~CompletionQueueTLSCache();
+    bool Flush(void** tag, bool* ok);
+
+   private:
+    CompletionQueue* cq_;
+    bool flushed_;
+  };
+
+  NextStatus AsyncNextInternal(void** tag, bool* ok, gpr_timespec deadline);
+
+  /// Wraps \a grpc_completion_queue_pluck.
+  /// \warning Must not be mixed with calls to \a Next.
+  bool Pluck(::grpc::internal::CompletionQueueTag* tag) {
+    auto deadline =
+        ::grpc::g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME);
+    while (true) {
+      auto ev = ::grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
+          cq_, tag, deadline, nullptr);
+      bool ok = ev.success != 0;
+      void* ignored = tag;
+      if (tag->FinalizeResult(&ignored, &ok)) {
+        GPR_CODEGEN_ASSERT(ignored == tag);
+        return ok;
+      }
+    }
+  }
+
+  /// Performs a single polling pluck on \a tag.
+  /// \warning Must not be mixed with calls to \a Next.
+  ///
+  /// TODO: sreek - This calls tag->FinalizeResult() even if the cq_ is already
+  /// shutdown. This is most likely a bug and if it is a bug, then change this
+  /// implementation to simple call the other TryPluck function with a zero
+  /// timeout. i.e:
+  ///      TryPluck(tag, gpr_time_0(GPR_CLOCK_REALTIME))
+  void TryPluck(::grpc::internal::CompletionQueueTag* tag) {
+    auto deadline =
+        ::grpc::g_core_codegen_interface->gpr_time_0(GPR_CLOCK_REALTIME);
+    auto ev = ::grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
+        cq_, tag, deadline, nullptr);
+    if (ev.type == GRPC_QUEUE_TIMEOUT) return;
+    bool ok = ev.success != 0;
+    void* ignored = tag;
+    // the tag must be swallowed if using TryPluck
+    GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
+  }
+
+  /// Performs a single polling pluck on \a tag. Calls tag->FinalizeResult if
+  /// the pluck() was successful and returned the tag.
+  ///
+  /// This exects tag->FinalizeResult (if called) to return 'false' i.e expects
+  /// that the tag is internal not something that is returned to the user.
+  void TryPluck(::grpc::internal::CompletionQueueTag* tag,
+                gpr_timespec deadline) {
+    auto ev = ::grpc::g_core_codegen_interface->grpc_completion_queue_pluck(
+        cq_, tag, deadline, nullptr);
+    if (ev.type == GRPC_QUEUE_TIMEOUT || ev.type == GRPC_QUEUE_SHUTDOWN) {
+      return;
+    }
+
+    bool ok = ev.success != 0;
+    void* ignored = tag;
+    GPR_CODEGEN_ASSERT(!tag->FinalizeResult(&ignored, &ok));
+  }
+
+  /// Manage state of avalanching operations : completion queue tags that
+  /// trigger other completion queue operations. The underlying core completion
+  /// queue should not really shutdown until all avalanching operations have
+  /// been finalized. Note that we maintain the requirement that an avalanche
+  /// registration must take place before CQ shutdown (which must be maintained
+  /// elsehwere)
+  void InitialAvalanching() {
+    gpr_atm_rel_store(&avalanches_in_flight_, static_cast<gpr_atm>(1));
+  }
+  void RegisterAvalanching() {
+    gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_,
+                                 static_cast<gpr_atm>(1));
+  }
+  void CompleteAvalanching() {
+    if (gpr_atm_no_barrier_fetch_add(&avalanches_in_flight_,
+                                     static_cast<gpr_atm>(-1)) == 1) {
+      ::grpc::g_core_codegen_interface->grpc_completion_queue_shutdown(cq_);
+    }
+  }
+
+  void RegisterServer(const Server* server) {
+    (void)server;
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    server_list_.push_back(server);
+#endif
+  }
+  void UnregisterServer(const Server* server) {
+    (void)server;
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    server_list_.remove(server);
+#endif
+  }
+  bool ServerListEmpty() const {
+#ifndef NDEBUG
+    grpc::internal::MutexLock l(&server_list_mutex_);
+    return server_list_.empty();
+#endif
+    return true;
+  }
+
+  grpc_completion_queue* cq_;  // owned
+
+  gpr_atm avalanches_in_flight_;
+
+  // List of servers associated with this CQ. Even though this is only used with
+  // NDEBUG, instantiate it in all cases since otherwise the size will be
+  // inconsistent.
+  mutable grpc::internal::Mutex server_list_mutex_;
+  std::list<const Server*> server_list_ /* GUARDED_BY(server_list_mutex_) */;
+};
+
+/// A specific type of completion queue used by the processing of notifications
+/// by servers. Instantiated by \a ServerBuilder or Server (for health checker).
+class ServerCompletionQueue : public CompletionQueue {
+ public:
+  bool IsFrequentlyPolled() { return polling_type_ != GRPC_CQ_NON_LISTENING; }
+
+ protected:
+  /// Default constructor
+  ServerCompletionQueue() : polling_type_(GRPC_CQ_DEFAULT_POLLING) {}
+
+ private:
+  /// \param completion_type indicates whether this is a NEXT or CALLBACK
+  /// completion queue.
+  /// \param polling_type Informs the GRPC library about the type of polling
+  /// allowed on this completion queue. See grpc_cq_polling_type's description
+  /// in grpc_types.h for more details.
+  /// \param shutdown_cb is the shutdown callback used for CALLBACK api queues
+  ServerCompletionQueue(grpc_cq_completion_type completion_type,
+                        grpc_cq_polling_type polling_type,
+                        grpc_experimental_completion_queue_functor* shutdown_cb)
+      : CompletionQueue(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, completion_type, polling_type,
+            shutdown_cb}),
+        polling_type_(polling_type) {}
+
+  grpc_cq_polling_type polling_type_;
+  friend class ::grpc_impl::ServerBuilder;
+  friend class ::grpc_impl::Server;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_tag.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_tag.h
new file mode 100644
index 0000000..304386a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/completion_queue_tag.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
+#define GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
+
+namespace grpc {
+
+namespace internal {
+/// An interface allowing implementors to process and filter event tags.
+class CompletionQueueTag {
+ public:
+  virtual ~CompletionQueueTag() {}
+
+  /// FinalizeResult must be called before informing user code that the
+  /// operation bound to the underlying core completion queue tag has
+  /// completed. In practice, this means:
+  ///
+  ///   1. For the sync API - before returning from Pluck
+  ///   2. For the CQ-based async API - before returning from Next
+  ///   3. For the callback-based API - before invoking the user callback
+  ///
+  /// This is the method that translates from core-side tag/status to
+  /// C++ API-observable tag/status.
+  ///
+  /// The return value is the status of the operation (returning status is the
+  /// general behavior of this function). If this function returns false, the
+  /// tag is dropped and not returned from the completion queue: this concept is
+  /// for events that are observed at core but not requested by the user
+  /// application (e.g., server shutdown, for server unimplemented method
+  /// responses, or for cases where a server-side RPC doesn't have a completion
+  /// notification registered using AsyncNotifyWhenDone)
+  virtual bool FinalizeResult(void** tag, bool* status) = 0;
+};
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_COMPLETION_QUEUE_TAG_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/config.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/config.h
new file mode 100644
index 0000000..37f0fd1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/config.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CONFIG_H
+#define GRPCPP_IMPL_CODEGEN_CONFIG_H
+
+#ifndef GRPC_CUSTOM_STRING
+#include <string>
+#define GRPC_CUSTOM_STRING std::string
+#endif
+
+/// The following macros are deprecated and appear only for users
+/// with PB files generated using gRPC 1.0.x plugins. They should
+/// not be used in new code
+#define GRPC_OVERRIDE override  // deprecated
+#define GRPC_FINAL final        // deprecated
+
+namespace grpc {
+
+typedef GRPC_CUSTOM_STRING string;
+
+using std::to_string;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CONFIG_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen.h
new file mode 100644
index 0000000..50c8da4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
+#define GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
+
+// This file should be compiled as part of grpcpp.
+
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+
+namespace grpc {
+
+/// Implementation of the core codegen interface.
+class CoreCodegen final : public CoreCodegenInterface {
+ private:
+  virtual const grpc_completion_queue_factory*
+  grpc_completion_queue_factory_lookup(
+      const grpc_completion_queue_attributes* attributes) override;
+  virtual grpc_completion_queue* grpc_completion_queue_create(
+      const grpc_completion_queue_factory* factory,
+      const grpc_completion_queue_attributes* attributes,
+      void* reserved) override;
+  grpc_completion_queue* grpc_completion_queue_create_for_next(
+      void* reserved) override;
+  grpc_completion_queue* grpc_completion_queue_create_for_pluck(
+      void* reserved) override;
+  void grpc_completion_queue_shutdown(grpc_completion_queue* cq) override;
+  void grpc_completion_queue_destroy(grpc_completion_queue* cq) override;
+  grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq, void* tag,
+                                         gpr_timespec deadline,
+                                         void* reserved) override;
+
+  void* gpr_malloc(size_t size) override;
+  void gpr_free(void* p) override;
+
+  void grpc_init() override;
+  void grpc_shutdown() override;
+
+  void gpr_mu_init(gpr_mu* mu) override;
+  void gpr_mu_destroy(gpr_mu* mu) override;
+  void gpr_mu_lock(gpr_mu* mu) override;
+  void gpr_mu_unlock(gpr_mu* mu) override;
+  void gpr_cv_init(gpr_cv* cv) override;
+  void gpr_cv_destroy(gpr_cv* cv) override;
+  int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) override;
+  void gpr_cv_signal(gpr_cv* cv) override;
+  void gpr_cv_broadcast(gpr_cv* cv) override;
+
+  grpc_call_error grpc_call_start_batch(grpc_call* call, const grpc_op* ops,
+                                        size_t nops, void* tag,
+                                        void* reserved) override;
+  grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
+                                               grpc_status_code status,
+                                               const char* description,
+                                               void* reserved) override;
+  void grpc_call_ref(grpc_call* call) override;
+  void grpc_call_unref(grpc_call* call) override;
+  void* grpc_call_arena_alloc(grpc_call* call, size_t length) override;
+  const char* grpc_call_error_to_string(grpc_call_error error) override;
+
+  grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) override;
+  void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) override;
+  size_t grpc_byte_buffer_length(grpc_byte_buffer* bb) override;
+
+  int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
+                                   grpc_byte_buffer* buffer) override;
+  void grpc_byte_buffer_reader_destroy(
+      grpc_byte_buffer_reader* reader) override;
+  int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
+                                   grpc_slice* slice) override;
+  int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
+                                   grpc_slice** slice) override;
+
+  grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
+                                                size_t nslices) override;
+  grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
+                                           void (*destroy)(void*),
+                                           void* user_data) override;
+  grpc_slice grpc_slice_new_with_len(void* p, size_t len,
+                                     void (*destroy)(void*, size_t)) override;
+  grpc_slice grpc_empty_slice() override;
+  grpc_slice grpc_slice_malloc(size_t length) override;
+  void grpc_slice_unref(grpc_slice slice) override;
+  grpc_slice grpc_slice_ref(grpc_slice slice) override;
+  grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) override;
+  grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) override;
+  grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end) override;
+  void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice slice) override;
+  void grpc_slice_buffer_pop(grpc_slice_buffer* sb) override;
+  grpc_slice grpc_slice_from_static_buffer(const void* buffer,
+                                           size_t length) override;
+  grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
+                                           size_t length) override;
+  void grpc_metadata_array_init(grpc_metadata_array* array) override;
+  void grpc_metadata_array_destroy(grpc_metadata_array* array) override;
+
+  gpr_timespec gpr_inf_future(gpr_clock_type type) override;
+  gpr_timespec gpr_time_0(gpr_clock_type type) override;
+
+  virtual const Status& ok() override;
+  virtual const Status& cancelled() override;
+
+  void assert_fail(const char* failed_assertion, const char* file,
+                   int line) override;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen_interface.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen_interface.h
new file mode 100644
index 0000000..c08cf6c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/core_codegen_interface.h	
@@ -0,0 +1,164 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
+#define GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
+
+#include <grpc/impl/codegen/byte_buffer.h>
+#include <grpc/impl/codegen/byte_buffer_reader.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/impl/codegen/sync.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc {
+
+/// Interface between the codegen library and the minimal subset of core
+/// features required by the generated code.
+///
+/// All undocumented methods are simply forwarding the call to their namesakes.
+/// Please refer to their corresponding documentation for details.
+///
+/// \warning This interface should be considered internal and private.
+class CoreCodegenInterface {
+ public:
+  virtual ~CoreCodegenInterface() = default;
+
+  /// Upon a failed assertion, log the error.
+  virtual void assert_fail(const char* failed_assertion, const char* file,
+                           int line) = 0;
+
+  virtual const grpc_completion_queue_factory*
+  grpc_completion_queue_factory_lookup(
+      const grpc_completion_queue_attributes* attributes) = 0;
+  virtual grpc_completion_queue* grpc_completion_queue_create(
+      const grpc_completion_queue_factory* factory,
+      const grpc_completion_queue_attributes* attributes, void* reserved) = 0;
+  virtual grpc_completion_queue* grpc_completion_queue_create_for_next(
+      void* reserved) = 0;
+  virtual grpc_completion_queue* grpc_completion_queue_create_for_pluck(
+      void* reserved) = 0;
+  virtual void grpc_completion_queue_shutdown(grpc_completion_queue* cq) = 0;
+  virtual void grpc_completion_queue_destroy(grpc_completion_queue* cq) = 0;
+  virtual grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq,
+                                                 void* tag,
+                                                 gpr_timespec deadline,
+                                                 void* reserved) = 0;
+
+  virtual void* gpr_malloc(size_t size) = 0;
+  virtual void gpr_free(void* p) = 0;
+
+  // These are only to be used to fix edge cases involving grpc_init and
+  // grpc_shutdown. Calling grpc_init from the codegen interface before
+  // the real grpc_init is called will cause a crash, so if you use this
+  // function, ensure that it is not the first call to grpc_init.
+  virtual void grpc_init() = 0;
+  virtual void grpc_shutdown() = 0;
+
+  virtual void gpr_mu_init(gpr_mu* mu) = 0;
+  virtual void gpr_mu_destroy(gpr_mu* mu) = 0;
+  virtual void gpr_mu_lock(gpr_mu* mu) = 0;
+  virtual void gpr_mu_unlock(gpr_mu* mu) = 0;
+  virtual void gpr_cv_init(gpr_cv* cv) = 0;
+  virtual void gpr_cv_destroy(gpr_cv* cv) = 0;
+  virtual int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
+                          gpr_timespec abs_deadline) = 0;
+  virtual void gpr_cv_signal(gpr_cv* cv) = 0;
+  virtual void gpr_cv_broadcast(gpr_cv* cv) = 0;
+
+  virtual grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) = 0;
+  virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0;
+  virtual size_t grpc_byte_buffer_length(grpc_byte_buffer* bb)
+      GRPC_MUST_USE_RESULT = 0;
+
+  virtual int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
+                                           grpc_byte_buffer* buffer)
+      GRPC_MUST_USE_RESULT = 0;
+  virtual void grpc_byte_buffer_reader_destroy(
+      grpc_byte_buffer_reader* reader) = 0;
+  virtual int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
+                                           grpc_slice* slice) = 0;
+  virtual int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
+                                           grpc_slice** slice) = 0;
+
+  virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
+                                                        size_t nslices) = 0;
+  virtual grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
+                                                   void (*destroy)(void*),
+                                                   void* user_data) = 0;
+  virtual grpc_slice grpc_slice_new_with_len(void* p, size_t len,
+                                             void (*destroy)(void*,
+                                                             size_t)) = 0;
+  virtual grpc_call_error grpc_call_start_batch(grpc_call* call,
+                                                const grpc_op* ops, size_t nops,
+                                                void* tag, void* reserved) = 0;
+  virtual grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
+                                                       grpc_status_code status,
+                                                       const char* description,
+                                                       void* reserved) = 0;
+  virtual void grpc_call_ref(grpc_call* call) = 0;
+  virtual void grpc_call_unref(grpc_call* call) = 0;
+  virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) = 0;
+  virtual const char* grpc_call_error_to_string(grpc_call_error error) = 0;
+  virtual grpc_slice grpc_empty_slice() = 0;
+  virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
+  virtual void grpc_slice_unref(grpc_slice slice) = 0;
+  virtual grpc_slice grpc_slice_ref(grpc_slice slice) = 0;
+  virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
+  virtual grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) = 0;
+  virtual grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end) = 0;
+  virtual void grpc_slice_buffer_add(grpc_slice_buffer* sb,
+                                     grpc_slice slice) = 0;
+  virtual void grpc_slice_buffer_pop(grpc_slice_buffer* sb) = 0;
+  virtual grpc_slice grpc_slice_from_static_buffer(const void* buffer,
+                                                   size_t length) = 0;
+  virtual grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
+                                                   size_t length) = 0;
+
+  virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0;
+  virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0;
+
+  virtual const Status& ok() = 0;
+  virtual const Status& cancelled() = 0;
+
+  virtual gpr_timespec gpr_inf_future(gpr_clock_type type) = 0;
+  virtual gpr_timespec gpr_time_0(gpr_clock_type type) = 0;
+};
+
+extern CoreCodegenInterface* g_core_codegen_interface;
+
+/// Codegen specific version of \a GPR_ASSERT.
+#define GPR_CODEGEN_ASSERT(x)                                              \
+  do {                                                                     \
+    if (GPR_UNLIKELY(!(x))) {                                              \
+      grpc::g_core_codegen_interface->assert_fail(#x, __FILE__, __LINE__); \
+    }                                                                      \
+  } while (0)
+
+/// Codegen specific version of \a GPR_DEBUG_ASSERT.
+#ifndef NDEBUG
+#define GPR_CODEGEN_DEBUG_ASSERT(x) GPR_CODEGEN_ASSERT(x)
+#else
+#define GPR_CODEGEN_DEBUG_ASSERT(x) \
+  do {                              \
+  } while (0)
+#endif
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/create_auth_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/create_auth_context.h
new file mode 100644
index 0000000..cb6095c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/create_auth_context.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
+#define GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
+
+#include <memory>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/security/auth_context.h>
+
+namespace grpc {
+
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call);
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_CREATE_AUTH_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/delegating_channel.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/delegating_channel.h
new file mode 100644
index 0000000..a186222
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/delegating_channel.h	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H
+#define GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H
+
+namespace grpc {
+namespace experimental {
+
+class DelegatingChannel : public ::grpc::ChannelInterface {
+ public:
+  virtual ~DelegatingChannel() {}
+
+  DelegatingChannel(std::shared_ptr<::grpc::ChannelInterface> delegate_channel)
+      : delegate_channel_(delegate_channel) {}
+
+  grpc_connectivity_state GetState(bool try_to_connect) override {
+    return delegate_channel()->GetState(try_to_connect);
+  }
+
+  std::shared_ptr<::grpc::ChannelInterface> delegate_channel() {
+    return delegate_channel_;
+  }
+
+ private:
+  internal::Call CreateCall(const internal::RpcMethod& method,
+                            ClientContext* context,
+                            ::grpc_impl::CompletionQueue* cq) final {
+    return delegate_channel()->CreateCall(method, context, cq);
+  }
+
+  void PerformOpsOnCall(internal::CallOpSetInterface* ops,
+                        internal::Call* call) final {
+    delegate_channel()->PerformOpsOnCall(ops, call);
+  }
+
+  void* RegisterMethod(const char* method) final {
+    return delegate_channel()->RegisterMethod(method);
+  }
+
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline,
+                               ::grpc_impl::CompletionQueue* cq,
+                               void* tag) override {
+    delegate_channel()->NotifyOnStateChangeImpl(last_observed, deadline, cq,
+                                                tag);
+  }
+
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) override {
+    return delegate_channel()->WaitForStateChangeImpl(last_observed, deadline);
+  }
+
+  internal::Call CreateCallInternal(const internal::RpcMethod& method,
+                                    ClientContext* context,
+                                    ::grpc_impl::CompletionQueue* cq,
+                                    size_t interceptor_pos) final {
+    return delegate_channel()->CreateCallInternal(method, context, cq,
+                                                  interceptor_pos);
+  }
+
+  ::grpc_impl::CompletionQueue* CallbackCQ() final {
+    return delegate_channel()->CallbackCQ();
+  }
+
+  std::shared_ptr<::grpc::ChannelInterface> delegate_channel_;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/grpc_library.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/grpc_library.h
new file mode 100644
index 0000000..17c904d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/grpc_library.h	
@@ -0,0 +1,64 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
+#define GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
+
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+
+namespace grpc {
+
+class GrpcLibraryInterface {
+ public:
+  virtual ~GrpcLibraryInterface() = default;
+  virtual void init() = 0;
+  virtual void shutdown() = 0;
+};
+
+/// Initialized by \a grpc::GrpcLibraryInitializer from
+/// <grpcpp/impl/grpc_library.h>
+extern GrpcLibraryInterface* g_glip;
+
+/// Classes that require gRPC to be initialized should inherit from this class.
+class GrpcLibraryCodegen {
+ public:
+  GrpcLibraryCodegen(bool call_grpc_init = true) : grpc_init_called_(false) {
+    if (call_grpc_init) {
+      GPR_CODEGEN_ASSERT(g_glip &&
+                         "gRPC library not initialized. See "
+                         "grpc::internal::GrpcLibraryInitializer.");
+      g_glip->init();
+      grpc_init_called_ = true;
+    }
+  }
+  virtual ~GrpcLibraryCodegen() {
+    if (grpc_init_called_) {
+      GPR_CODEGEN_ASSERT(g_glip &&
+                         "gRPC library not initialized. See "
+                         "grpc::internal::GrpcLibraryInitializer.");
+      g_glip->shutdown();
+    }
+  }
+
+ private:
+  bool grpc_init_called_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_GRPC_LIBRARY_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/intercepted_channel.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/intercepted_channel.h
new file mode 100644
index 0000000..bcdd89d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/intercepted_channel.h	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
+#define GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
+
+#include <grpcpp/impl/codegen/channel_interface.h>
+
+namespace grpc_impl {
+class CompletionQueue;
+}
+
+namespace grpc {
+
+namespace internal {
+
+class InterceptorBatchMethodsImpl;
+
+/// An InterceptedChannel is available to client Interceptors. An
+/// InterceptedChannel is unique to an interceptor, and when an RPC is started
+/// on this channel, only those interceptors that come after this interceptor
+/// see the RPC.
+class InterceptedChannel : public ChannelInterface {
+ public:
+  virtual ~InterceptedChannel() { channel_ = nullptr; }
+
+  /// Get the current channel state. If the channel is in IDLE and
+  /// \a try_to_connect is set to true, try to connect.
+  grpc_connectivity_state GetState(bool try_to_connect) override {
+    return channel_->GetState(try_to_connect);
+  }
+
+ private:
+  InterceptedChannel(ChannelInterface* channel, size_t pos)
+      : channel_(channel), interceptor_pos_(pos) {}
+
+  Call CreateCall(const RpcMethod& method, ::grpc_impl::ClientContext* context,
+                  ::grpc_impl::CompletionQueue* cq) override {
+    return channel_->CreateCallInternal(method, context, cq, interceptor_pos_);
+  }
+
+  void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override {
+    return channel_->PerformOpsOnCall(ops, call);
+  }
+  void* RegisterMethod(const char* method) override {
+    return channel_->RegisterMethod(method);
+  }
+
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline,
+                               ::grpc_impl::CompletionQueue* cq,
+                               void* tag) override {
+    return channel_->NotifyOnStateChangeImpl(last_observed, deadline, cq, tag);
+  }
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) override {
+    return channel_->WaitForStateChangeImpl(last_observed, deadline);
+  }
+
+  ::grpc_impl::CompletionQueue* CallbackCQ() override {
+    return channel_->CallbackCQ();
+  }
+
+  ChannelInterface* channel_;
+  size_t interceptor_pos_;
+
+  friend class InterceptorBatchMethodsImpl;
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor.h
new file mode 100644
index 0000000..18c7cf3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor.h	
@@ -0,0 +1,227 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
+#define GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/metadata_map.h>
+
+namespace grpc {
+
+class ChannelInterface;
+class Status;
+
+namespace experimental {
+
+/// An enumeration of different possible points at which the \a Intercept
+/// method of the \a Interceptor interface may be called. Any given call
+/// to \a Intercept will include one or more of these hook points, and
+/// each hook point makes certain types of information available to the
+/// interceptor.
+/// In these enumeration names, PRE_SEND means that an interception has taken
+/// place between the time the application provided a certain type of data
+/// (e.g., initial metadata, status) and the time that that data goes to the
+/// other side. POST_SEND means that the data has been committed for going to
+/// the other side (even if it has not yet been received at the other side).
+/// PRE_RECV means an interception between the time that a certain
+/// operation has been requested and it is available. POST_RECV means that a
+/// result is available but has not yet been passed back to the application.
+/// A batch of interception points will only contain either PRE or POST hooks
+/// but not both types. For example, a batch with PRE_SEND hook points will not
+/// contain POST_RECV or POST_SEND ops. Likewise, a batch with POST_* ops can
+/// not contain PRE_* ops.
+enum class InterceptionHookPoints {
+  /// The first three in this list are for clients and servers
+  PRE_SEND_INITIAL_METADATA,
+  PRE_SEND_MESSAGE,
+  POST_SEND_MESSAGE,
+  PRE_SEND_STATUS,  // server only
+  PRE_SEND_CLOSE,   // client only: WritesDone for stream; after write in unary
+  /// The following three are for hijacked clients only. A batch with PRE_RECV_*
+  /// hook points will never contain hook points of other types.
+  PRE_RECV_INITIAL_METADATA,
+  PRE_RECV_MESSAGE,
+  PRE_RECV_STATUS,
+  /// The following two are for all clients and servers
+  POST_RECV_INITIAL_METADATA,
+  POST_RECV_MESSAGE,
+  POST_RECV_STATUS,  // client only
+  POST_RECV_CLOSE,   // server only
+  /// This is a special hook point available to both clients and servers when
+  /// TryCancel() is performed.
+  ///  - No other hook points will be present along with this.
+  ///  - It is illegal for an interceptor to block/delay this operation.
+  ///  - ALL interceptors see this hook point irrespective of whether the
+  ///    RPC was hijacked or not.
+  PRE_SEND_CANCEL,
+  NUM_INTERCEPTION_HOOKS
+};
+
+/// Class that is passed as an argument to the \a Intercept method
+/// of the application's \a Interceptor interface implementation. It has five
+/// purposes:
+///   1. Indicate which hook points are present at a specific interception
+///   2. Allow an interceptor to inform the library that an RPC should
+///      continue to the next stage of its processing (which may be another
+///      interceptor or the main path of the library)
+///   3. Allow an interceptor to hijack the processing of the RPC (only for
+///      client-side RPCs with PRE_SEND_INITIAL_METADATA) so that it does not
+///      proceed with normal processing beyond that stage
+///   4. Access the relevant fields of an RPC at each interception point
+///   5. Set some fields of an RPC at each interception point, when possible
+class InterceptorBatchMethods {
+ public:
+  virtual ~InterceptorBatchMethods() {}
+  /// Determine whether the current batch has an interception hook point
+  /// of type \a type
+  virtual bool QueryInterceptionHookPoint(InterceptionHookPoints type) = 0;
+  /// Signal that the interceptor is done intercepting the current batch of the
+  /// RPC. Every interceptor must either call Proceed or Hijack on each
+  /// interception. In most cases, only Proceed will be used. Explicit use of
+  /// Proceed is what enables interceptors to delay the processing of RPCs
+  /// while they perform other work.
+  /// Proceed is a no-op if the batch contains PRE_SEND_CANCEL. Simply returning
+  /// from the Intercept method does the job of continuing the RPC in this case.
+  /// This is because PRE_SEND_CANCEL is always in a separate batch and is not
+  /// allowed to be delayed.
+  virtual void Proceed() = 0;
+  /// Indicate that the interceptor has hijacked the RPC (only valid if the
+  /// batch contains send_initial_metadata on the client side). Later
+  /// interceptors in the interceptor list will not be called. Later batches
+  /// on the same RPC will go through interception, but only up to the point
+  /// of the hijacking interceptor.
+  virtual void Hijack() = 0;
+
+  /// Send Message Methods
+  /// GetSerializedSendMessage and GetSendMessage/ModifySendMessage are the
+  /// available methods to view and modify the request payload. An interceptor
+  /// can access the payload in either serialized form or non-serialized form
+  /// but not both at the same time.
+  /// gRPC performs serialization in a lazy manner, which means
+  /// that a call to GetSerializedSendMessage will result in a serialization
+  /// operation if the payload stored is not in the serialized form already; the
+  /// non-serialized form will be lost and GetSendMessage will no longer return
+  /// a valid pointer, and this will remain true for later interceptors too.
+  /// This can change however if ModifySendMessage is used to replace the
+  /// current payload. Note that ModifySendMessage requires a new payload
+  /// message in the non-serialized form. This will overwrite the existing
+  /// payload irrespective of whether it had been serialized earlier. Also note
+  /// that gRPC Async API requires early serialization of the payload which
+  /// means that the payload would be available in the serialized form only
+  /// unless an interceptor replaces the payload with ModifySendMessage.
+
+  /// Returns a modifable ByteBuffer holding the serialized form of the message
+  /// that is going to be sent. Valid for PRE_SEND_MESSAGE interceptions.
+  /// A return value of nullptr indicates that this ByteBuffer is not valid.
+  virtual ByteBuffer* GetSerializedSendMessage() = 0;
+
+  /// Returns a non-modifiable pointer to the non-serialized form of the message
+  /// to be sent. Valid for PRE_SEND_MESSAGE interceptions. A return value of
+  /// nullptr indicates that this field is not valid.
+  virtual const void* GetSendMessage() = 0;
+
+  /// Overwrites the message to be sent with \a message. \a message should be in
+  /// the non-serialized form expected by the method. Valid for PRE_SEND_MESSAGE
+  /// interceptions. Note that the interceptor is responsible for maintaining
+  /// the life of the message till it is serialized or it receives the
+  /// POST_SEND_MESSAGE interception point, whichever happens earlier. The
+  /// modifying interceptor may itself force early serialization by calling
+  /// GetSerializedSendMessage.
+  virtual void ModifySendMessage(const void* message) = 0;
+
+  /// Checks whether the SEND MESSAGE op succeeded. Valid for POST_SEND_MESSAGE
+  /// interceptions.
+  virtual bool GetSendMessageStatus() = 0;
+
+  /// Returns a modifiable multimap of the initial metadata to be sent. Valid
+  /// for PRE_SEND_INITIAL_METADATA interceptions. A value of nullptr indicates
+  /// that this field is not valid.
+  virtual std::multimap<grpc::string, grpc::string>*
+  GetSendInitialMetadata() = 0;
+
+  /// Returns the status to be sent. Valid for PRE_SEND_STATUS interceptions.
+  virtual Status GetSendStatus() = 0;
+
+  /// Overwrites the status with \a status. Valid for PRE_SEND_STATUS
+  /// interceptions.
+  virtual void ModifySendStatus(const Status& status) = 0;
+
+  /// Returns a modifiable multimap of the trailing metadata to be sent. Valid
+  /// for PRE_SEND_STATUS interceptions. A value of nullptr indicates
+  /// that this field is not valid.
+  virtual std::multimap<grpc::string, grpc::string>*
+  GetSendTrailingMetadata() = 0;
+
+  /// Returns a pointer to the modifiable received message. Note that the
+  /// message is already deserialized but the type is not set; the interceptor
+  /// should static_cast to the appropriate type before using it. This is valid
+  /// for PRE_RECV_MESSAGE and POST_RECV_MESSAGE interceptions; nullptr for not
+  /// valid
+  virtual void* GetRecvMessage() = 0;
+
+  /// Returns a modifiable multimap of the received initial metadata.
+  /// Valid for PRE_RECV_INITIAL_METADATA and POST_RECV_INITIAL_METADATA
+  /// interceptions; nullptr if not valid
+  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
+  GetRecvInitialMetadata() = 0;
+
+  /// Returns a modifiable view of the received status on PRE_RECV_STATUS and
+  /// POST_RECV_STATUS interceptions; nullptr if not valid.
+  virtual Status* GetRecvStatus() = 0;
+
+  /// Returns a modifiable multimap of the received trailing metadata on
+  /// PRE_RECV_STATUS and POST_RECV_STATUS interceptions; nullptr if not valid
+  virtual std::multimap<grpc::string_ref, grpc::string_ref>*
+  GetRecvTrailingMetadata() = 0;
+
+  /// Gets an intercepted channel. When a call is started on this interceptor,
+  /// only interceptors after the current interceptor are created from the
+  /// factory objects registered with the channel. This allows calls to be
+  /// started from interceptors without infinite regress through the interceptor
+  /// list.
+  virtual std::unique_ptr<ChannelInterface> GetInterceptedChannel() = 0;
+
+  /// On a hijacked RPC, an interceptor can decide to fail a PRE_RECV_MESSAGE
+  /// op. This would be a signal to the reader that there will be no more
+  /// messages, or the stream has failed or been cancelled.
+  virtual void FailHijackedRecvMessage() = 0;
+
+  /// On a hijacked RPC/ to-be hijacked RPC, this can be called to fail a SEND
+  /// MESSAGE op
+  virtual void FailHijackedSendMessage() = 0;
+};
+
+/// Interface for an interceptor. Interceptor authors must create a class
+/// that derives from this parent class.
+class Interceptor {
+ public:
+  virtual ~Interceptor() {}
+
+  /// The one public method of an Interceptor interface. Override this to
+  /// trigger the desired actions at the hook points described above.
+  virtual void Intercept(InterceptorBatchMethods* methods) = 0;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor_common.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor_common.h
new file mode 100644
index 0000000..01ffe19
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/interceptor_common.h	
@@ -0,0 +1,556 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTOR_COMMON_H
+#define GRPCPP_IMPL_CODEGEN_INTERCEPTOR_COMMON_H
+
+#include <array>
+#include <functional>
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_op_set_interface.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/impl/codegen/intercepted_channel.h>
+#include <grpcpp/impl/codegen/server_interceptor.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+namespace grpc {
+namespace internal {
+
+class InterceptorBatchMethodsImpl
+    : public experimental::InterceptorBatchMethods {
+ public:
+  InterceptorBatchMethodsImpl() {
+    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
+         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
+         i = static_cast<experimental::InterceptionHookPoints>(
+             static_cast<size_t>(i) + 1)) {
+      hooks_[static_cast<size_t>(i)] = false;
+    }
+  }
+
+  ~InterceptorBatchMethodsImpl() {}
+
+  bool QueryInterceptionHookPoint(
+      experimental::InterceptionHookPoints type) override {
+    return hooks_[static_cast<size_t>(type)];
+  }
+
+  void Proceed() override {
+    if (call_->client_rpc_info() != nullptr) {
+      return ProceedClient();
+    }
+    GPR_CODEGEN_ASSERT(call_->server_rpc_info() != nullptr);
+    ProceedServer();
+  }
+
+  void Hijack() override {
+    // Only the client can hijack when sending down initial metadata
+    GPR_CODEGEN_ASSERT(!reverse_ && ops_ != nullptr &&
+                       call_->client_rpc_info() != nullptr);
+    // It is illegal to call Hijack twice
+    GPR_CODEGEN_ASSERT(!ran_hijacking_interceptor_);
+    auto* rpc_info = call_->client_rpc_info();
+    rpc_info->hijacked_ = true;
+    rpc_info->hijacked_interceptor_ = current_interceptor_index_;
+    ClearHookPoints();
+    ops_->SetHijackingState();
+    ran_hijacking_interceptor_ = true;
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void AddInterceptionHookPoint(experimental::InterceptionHookPoints type) {
+    hooks_[static_cast<size_t>(type)] = true;
+  }
+
+  ByteBuffer* GetSerializedSendMessage() override {
+    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
+    if (*orig_send_message_ != nullptr) {
+      GPR_CODEGEN_ASSERT(serializer_(*orig_send_message_).ok());
+      *orig_send_message_ = nullptr;
+    }
+    return send_message_;
+  }
+
+  const void* GetSendMessage() override {
+    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
+    return *orig_send_message_;
+  }
+
+  void ModifySendMessage(const void* message) override {
+    GPR_CODEGEN_ASSERT(orig_send_message_ != nullptr);
+    *orig_send_message_ = message;
+  }
+
+  bool GetSendMessageStatus() override { return !*fail_send_message_; }
+
+  std::multimap<grpc::string, grpc::string>* GetSendInitialMetadata() override {
+    return send_initial_metadata_;
+  }
+
+  Status GetSendStatus() override {
+    return Status(static_cast<StatusCode>(*code_), *error_message_,
+                  *error_details_);
+  }
+
+  void ModifySendStatus(const Status& status) override {
+    *code_ = static_cast<grpc_status_code>(status.error_code());
+    *error_details_ = status.error_details();
+    *error_message_ = status.error_message();
+  }
+
+  std::multimap<grpc::string, grpc::string>* GetSendTrailingMetadata()
+      override {
+    return send_trailing_metadata_;
+  }
+
+  void* GetRecvMessage() override { return recv_message_; }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
+      override {
+    return recv_initial_metadata_->map();
+  }
+
+  Status* GetRecvStatus() override { return recv_status_; }
+
+  void FailHijackedSendMessage() override {
+    GPR_CODEGEN_ASSERT(hooks_[static_cast<size_t>(
+        experimental::InterceptionHookPoints::PRE_SEND_MESSAGE)]);
+    *fail_send_message_ = true;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
+      override {
+    return recv_trailing_metadata_->map();
+  }
+
+  void SetSendMessage(ByteBuffer* buf, const void** msg,
+                      bool* fail_send_message,
+                      std::function<Status(const void*)> serializer) {
+    send_message_ = buf;
+    orig_send_message_ = msg;
+    fail_send_message_ = fail_send_message;
+    serializer_ = serializer;
+  }
+
+  void SetSendInitialMetadata(
+      std::multimap<grpc::string, grpc::string>* metadata) {
+    send_initial_metadata_ = metadata;
+  }
+
+  void SetSendStatus(grpc_status_code* code, grpc::string* error_details,
+                     grpc::string* error_message) {
+    code_ = code;
+    error_details_ = error_details;
+    error_message_ = error_message;
+  }
+
+  void SetSendTrailingMetadata(
+      std::multimap<grpc::string, grpc::string>* metadata) {
+    send_trailing_metadata_ = metadata;
+  }
+
+  void SetRecvMessage(void* message, bool* got_message) {
+    recv_message_ = message;
+    got_message_ = got_message;
+  }
+
+  void SetRecvInitialMetadata(MetadataMap* map) {
+    recv_initial_metadata_ = map;
+  }
+
+  void SetRecvStatus(Status* status) { recv_status_ = status; }
+
+  void SetRecvTrailingMetadata(MetadataMap* map) {
+    recv_trailing_metadata_ = map;
+  }
+
+  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
+    auto* info = call_->client_rpc_info();
+    if (info == nullptr) {
+      return std::unique_ptr<ChannelInterface>(nullptr);
+    }
+    // The intercepted channel starts from the interceptor just after the
+    // current interceptor
+    return std::unique_ptr<ChannelInterface>(new InterceptedChannel(
+        info->channel(), current_interceptor_index_ + 1));
+  }
+
+  void FailHijackedRecvMessage() override {
+    GPR_CODEGEN_ASSERT(hooks_[static_cast<size_t>(
+        experimental::InterceptionHookPoints::PRE_RECV_MESSAGE)]);
+    *got_message_ = false;
+  }
+
+  // Clears all state
+  void ClearState() {
+    reverse_ = false;
+    ran_hijacking_interceptor_ = false;
+    ClearHookPoints();
+  }
+
+  // Prepares for Post_recv operations
+  void SetReverse() {
+    reverse_ = true;
+    ran_hijacking_interceptor_ = false;
+    ClearHookPoints();
+  }
+
+  // This needs to be set before interceptors are run
+  void SetCall(Call* call) { call_ = call; }
+
+  // This needs to be set before interceptors are run using RunInterceptors().
+  // Alternatively, RunInterceptors(std::function<void(void)> f) can be used.
+  void SetCallOpSetInterface(CallOpSetInterface* ops) { ops_ = ops; }
+
+  // SetCall should have been called before this.
+  // Returns true if the interceptors list is empty
+  bool InterceptorsListEmpty() {
+    auto* client_rpc_info = call_->client_rpc_info();
+    if (client_rpc_info != nullptr) {
+      if (client_rpc_info->interceptors_.size() == 0) {
+        return true;
+      } else {
+        return false;
+      }
+    }
+
+    auto* server_rpc_info = call_->server_rpc_info();
+    if (server_rpc_info == nullptr ||
+        server_rpc_info->interceptors_.size() == 0) {
+      return true;
+    }
+    return false;
+  }
+
+  // This should be used only by subclasses of CallOpSetInterface. SetCall and
+  // SetCallOpSetInterface should have been called before this. After all the
+  // interceptors are done running, either ContinueFillOpsAfterInterception or
+  // ContinueFinalizeOpsAfterInterception will be called. Note that neither of
+  // them is invoked if there were no interceptors registered.
+  bool RunInterceptors() {
+    GPR_CODEGEN_ASSERT(ops_);
+    auto* client_rpc_info = call_->client_rpc_info();
+    if (client_rpc_info != nullptr) {
+      if (client_rpc_info->interceptors_.size() == 0) {
+        return true;
+      } else {
+        RunClientInterceptors();
+        return false;
+      }
+    }
+
+    auto* server_rpc_info = call_->server_rpc_info();
+    if (server_rpc_info == nullptr ||
+        server_rpc_info->interceptors_.size() == 0) {
+      return true;
+    }
+    RunServerInterceptors();
+    return false;
+  }
+
+  // Returns true if no interceptors are run. Returns false otherwise if there
+  // are interceptors registered. After the interceptors are done running \a f
+  // will be invoked. This is to be used only by BaseAsyncRequest and
+  // SyncRequest.
+  bool RunInterceptors(std::function<void(void)> f) {
+    // This is used only by the server for initial call request
+    GPR_CODEGEN_ASSERT(reverse_ == true);
+    GPR_CODEGEN_ASSERT(call_->client_rpc_info() == nullptr);
+    auto* server_rpc_info = call_->server_rpc_info();
+    if (server_rpc_info == nullptr ||
+        server_rpc_info->interceptors_.size() == 0) {
+      return true;
+    }
+    callback_ = std::move(f);
+    RunServerInterceptors();
+    return false;
+  }
+
+ private:
+  void RunClientInterceptors() {
+    auto* rpc_info = call_->client_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_ = 0;
+    } else {
+      if (rpc_info->hijacked_) {
+        current_interceptor_index_ = rpc_info->hijacked_interceptor_;
+      } else {
+        current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
+      }
+    }
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void RunServerInterceptors() {
+    auto* rpc_info = call_->server_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_ = 0;
+    } else {
+      current_interceptor_index_ = rpc_info->interceptors_.size() - 1;
+    }
+    rpc_info->RunInterceptor(this, current_interceptor_index_);
+  }
+
+  void ProceedClient() {
+    auto* rpc_info = call_->client_rpc_info();
+    if (rpc_info->hijacked_ && !reverse_ &&
+        current_interceptor_index_ == rpc_info->hijacked_interceptor_ &&
+        !ran_hijacking_interceptor_) {
+      // We now need to provide hijacked recv ops to this interceptor
+      ClearHookPoints();
+      ops_->SetHijackingState();
+      ran_hijacking_interceptor_ = true;
+      rpc_info->RunInterceptor(this, current_interceptor_index_);
+      return;
+    }
+    if (!reverse_) {
+      current_interceptor_index_++;
+      // We are going down the stack of interceptors
+      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
+        if (rpc_info->hijacked_ &&
+            current_interceptor_index_ > rpc_info->hijacked_interceptor_) {
+          // This is a hijacked RPC and we are done with hijacking
+          ops_->ContinueFillOpsAfterInterception();
+        } else {
+          rpc_info->RunInterceptor(this, current_interceptor_index_);
+        }
+      } else {
+        // we are done running all the interceptors without any hijacking
+        ops_->ContinueFillOpsAfterInterception();
+      }
+    } else {
+      // We are going up the stack of interceptors
+      if (current_interceptor_index_ > 0) {
+        // Continue running interceptors
+        current_interceptor_index_--;
+        rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else {
+        // we are done running all the interceptors without any hijacking
+        ops_->ContinueFinalizeResultAfterInterception();
+      }
+    }
+  }
+
+  void ProceedServer() {
+    auto* rpc_info = call_->server_rpc_info();
+    if (!reverse_) {
+      current_interceptor_index_++;
+      if (current_interceptor_index_ < rpc_info->interceptors_.size()) {
+        return rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else if (ops_) {
+        return ops_->ContinueFillOpsAfterInterception();
+      }
+    } else {
+      // We are going up the stack of interceptors
+      if (current_interceptor_index_ > 0) {
+        // Continue running interceptors
+        current_interceptor_index_--;
+        return rpc_info->RunInterceptor(this, current_interceptor_index_);
+      } else if (ops_) {
+        return ops_->ContinueFinalizeResultAfterInterception();
+      }
+    }
+    GPR_CODEGEN_ASSERT(callback_);
+    callback_();
+  }
+
+  void ClearHookPoints() {
+    for (auto i = static_cast<experimental::InterceptionHookPoints>(0);
+         i < experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS;
+         i = static_cast<experimental::InterceptionHookPoints>(
+             static_cast<size_t>(i) + 1)) {
+      hooks_[static_cast<size_t>(i)] = false;
+    }
+  }
+
+  std::array<bool,
+             static_cast<size_t>(
+                 experimental::InterceptionHookPoints::NUM_INTERCEPTION_HOOKS)>
+      hooks_;
+
+  size_t current_interceptor_index_ = 0;  // Current iterator
+  bool reverse_ = false;
+  bool ran_hijacking_interceptor_ = false;
+  Call* call_ = nullptr;  // The Call object is present along with CallOpSet
+                          // object/callback
+  CallOpSetInterface* ops_ = nullptr;
+  std::function<void(void)> callback_;
+
+  ByteBuffer* send_message_ = nullptr;
+  bool* fail_send_message_ = nullptr;
+  const void** orig_send_message_ = nullptr;
+  std::function<Status(const void*)> serializer_;
+
+  std::multimap<grpc::string, grpc::string>* send_initial_metadata_;
+
+  grpc_status_code* code_ = nullptr;
+  grpc::string* error_details_ = nullptr;
+  grpc::string* error_message_ = nullptr;
+
+  std::multimap<grpc::string, grpc::string>* send_trailing_metadata_ = nullptr;
+
+  void* recv_message_ = nullptr;
+  bool* got_message_ = nullptr;
+
+  MetadataMap* recv_initial_metadata_ = nullptr;
+
+  Status* recv_status_ = nullptr;
+
+  MetadataMap* recv_trailing_metadata_ = nullptr;
+};
+
+// A special implementation of InterceptorBatchMethods to send a Cancel
+// notification down the interceptor stack
+class CancelInterceptorBatchMethods
+    : public experimental::InterceptorBatchMethods {
+ public:
+  bool QueryInterceptionHookPoint(
+      experimental::InterceptionHookPoints type) override {
+    if (type == experimental::InterceptionHookPoints::PRE_SEND_CANCEL) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  void Proceed() override {
+    // This is a no-op. For actual continuation of the RPC simply needs to
+    // return from the Intercept method
+  }
+
+  void Hijack() override {
+    // Only the client can hijack when sending down initial metadata
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call Hijack on a method which has a "
+                       "Cancel notification");
+  }
+
+  ByteBuffer* GetSerializedSendMessage() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetSendMessage on a method which "
+                       "has a Cancel notification");
+    return nullptr;
+  }
+
+  bool GetSendMessageStatus() override {
+    GPR_CODEGEN_ASSERT(
+        false &&
+        "It is illegal to call GetSendMessageStatus on a method which "
+        "has a Cancel notification");
+    return false;
+  }
+
+  const void* GetSendMessage() override {
+    GPR_CODEGEN_ASSERT(
+        false &&
+        "It is illegal to call GetOriginalSendMessage on a method which "
+        "has a Cancel notification");
+    return nullptr;
+  }
+
+  void ModifySendMessage(const void* /*message*/) override {
+    GPR_CODEGEN_ASSERT(
+        false &&
+        "It is illegal to call ModifySendMessage on a method which "
+        "has a Cancel notification");
+  }
+
+  std::multimap<grpc::string, grpc::string>* GetSendInitialMetadata() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetSendInitialMetadata on a "
+                       "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  Status GetSendStatus() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetSendStatus on a method which "
+                       "has a Cancel notification");
+    return Status();
+  }
+
+  void ModifySendStatus(const Status& /*status*/) override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call ModifySendStatus on a method "
+                       "which has a Cancel notification");
+    return;
+  }
+
+  std::multimap<grpc::string, grpc::string>* GetSendTrailingMetadata()
+      override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetSendTrailingMetadata on a "
+                       "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  void* GetRecvMessage() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetRecvMessage on a method which "
+                       "has a Cancel notification");
+    return nullptr;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvInitialMetadata()
+      override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetRecvInitialMetadata on a "
+                       "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  Status* GetRecvStatus() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetRecvStatus on a method which "
+                       "has a Cancel notification");
+    return nullptr;
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* GetRecvTrailingMetadata()
+      override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetRecvTrailingMetadata on a "
+                       "method which has a Cancel notification");
+    return nullptr;
+  }
+
+  std::unique_ptr<ChannelInterface> GetInterceptedChannel() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call GetInterceptedChannel on a "
+                       "method which has a Cancel notification");
+    return std::unique_ptr<ChannelInterface>(nullptr);
+  }
+
+  void FailHijackedRecvMessage() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call FailHijackedRecvMessage on a "
+                       "method which has a Cancel notification");
+  }
+
+  void FailHijackedSendMessage() override {
+    GPR_CODEGEN_ASSERT(false &&
+                       "It is illegal to call FailHijackedSendMessage on a "
+                       "method which has a Cancel notification");
+  }
+};
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_INTERCEPTOR_COMMON_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/message_allocator.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/message_allocator.h
new file mode 100644
index 0000000..4048ea1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/message_allocator.h	
@@ -0,0 +1,93 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
+#define GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
+
+namespace grpc {
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+
+// NOTE: This is an API for advanced users who need custom allocators.
+// Per rpc struct for the allocator. This is the interface to return to user.
+class RpcAllocatorState {
+ public:
+  virtual ~RpcAllocatorState() = default;
+  // Optionally deallocate request early to reduce the size of working set.
+  // A custom MessageAllocator needs to be registered to make use of this.
+  // This is not abstract because implementing it is optional.
+  virtual void FreeRequest() {}
+};
+
+// This is the interface returned by the allocator.
+// grpc library will call the methods to get request/response pointers and to
+// release the object when it is done.
+template <typename RequestT, typename ResponseT>
+class MessageHolder : public RpcAllocatorState {
+ public:
+  // Release this object. For example, if the custom allocator's
+  // AllocateMessasge creates an instance of a subclass with new, the Release()
+  // should do a "delete this;".
+  virtual void Release() = 0;
+  RequestT* request() { return request_; }
+  ResponseT* response() { return response_; }
+
+ protected:
+  void set_request(RequestT* request) { request_ = request; }
+  void set_response(ResponseT* response) { response_ = response; }
+
+ private:
+  // NOTE: subclasses should set these pointers.
+  RequestT* request_;
+  ResponseT* response_;
+};
+
+// A custom allocator can be set via the generated code to a callback unary
+// method, such as SetMessageAllocatorFor_Echo(custom_allocator). The allocator
+// needs to be alive for the lifetime of the server.
+// Implementations need to be thread-safe.
+template <typename RequestT, typename ResponseT>
+class MessageAllocator {
+ public:
+  virtual ~MessageAllocator() = default;
+  virtual MessageHolder<RequestT, ResponseT>* AllocateMessages() = 0;
+};
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+
+// TODO(vjpai): Remove namespace experimental when de-experimentalized fully.
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+
+using ::grpc::RpcAllocatorState;
+
+template <typename RequestT, typename ResponseT>
+using MessageHolder = ::grpc::MessageHolder<RequestT, ResponseT>;
+
+template <typename RequestT, typename ResponseT>
+using MessageAllocator = ::grpc::MessageAllocator<RequestT, ResponseT>;
+
+}  // namespace experimental
+#endif
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_MESSAGE_ALLOCATOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/metadata_map.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/metadata_map.h
new file mode 100644
index 0000000..9cec54d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/metadata_map.h	
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
+#define GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
+
+#include <map>
+
+#include <grpc/impl/codegen/log.h>
+#include <grpcpp/impl/codegen/slice.h>
+
+namespace grpc {
+
+namespace internal {
+
+const char kBinaryErrorDetailsKey[] = "grpc-status-details-bin";
+
+class MetadataMap {
+ public:
+  MetadataMap() { Setup(); }
+
+  ~MetadataMap() { Destroy(); }
+
+  grpc::string GetBinaryErrorDetails() {
+    // if filled_, extract from the multimap for O(log(n))
+    if (filled_) {
+      auto iter = map_.find(kBinaryErrorDetailsKey);
+      if (iter != map_.end()) {
+        return grpc::string(iter->second.begin(), iter->second.length());
+      }
+    }
+    // if not yet filled, take the O(n) lookup to avoid allocating the
+    // multimap until it is requested.
+    // TODO(ncteisen): plumb this through core as a first class object, just
+    // like code and message.
+    else {
+      for (size_t i = 0; i < arr_.count; i++) {
+        if (strncmp(reinterpret_cast<const char*>(
+                        GRPC_SLICE_START_PTR(arr_.metadata[i].key)),
+                    kBinaryErrorDetailsKey,
+                    GRPC_SLICE_LENGTH(arr_.metadata[i].key)) == 0) {
+          return grpc::string(reinterpret_cast<const char*>(
+                                  GRPC_SLICE_START_PTR(arr_.metadata[i].value)),
+                              GRPC_SLICE_LENGTH(arr_.metadata[i].value));
+        }
+      }
+    }
+    return grpc::string();
+  }
+
+  std::multimap<grpc::string_ref, grpc::string_ref>* map() {
+    FillMap();
+    return &map_;
+  }
+  grpc_metadata_array* arr() { return &arr_; }
+
+  void Reset() {
+    filled_ = false;
+    map_.clear();
+    Destroy();
+    Setup();
+  }
+
+ private:
+  bool filled_ = false;
+  grpc_metadata_array arr_;
+  std::multimap<grpc::string_ref, grpc::string_ref> map_;
+
+  void Destroy() {
+    g_core_codegen_interface->grpc_metadata_array_destroy(&arr_);
+  }
+
+  void Setup() { memset(&arr_, 0, sizeof(arr_)); }
+
+  void FillMap() {
+    if (filled_) return;
+    filled_ = true;
+    for (size_t i = 0; i < arr_.count; i++) {
+      // TODO(yangg) handle duplicates?
+      map_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
+          StringRefFromSlice(&arr_.metadata[i].key),
+          StringRefFromSlice(&arr_.metadata[i].value)));
+    }
+  }
+};
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_METADATA_MAP_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler.h
new file mode 100644
index 0000000..4b0f594
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
+#define GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
+
+#include <grpcpp/impl/codegen/method_handler_impl.h>
+
+namespace grpc {
+
+namespace internal {
+
+template <class ServiceType, class RequestType, class ResponseType>
+using BidiStreamingHandler =
+    ::grpc_impl::internal::BidiStreamingHandler<ServiceType, RequestType,
+                                                ResponseType>;
+
+template <class ServiceType, class RequestType, class ResponseType>
+using RpcMethodHandler =
+    ::grpc_impl::internal::RpcMethodHandler<ServiceType, RequestType,
+                                            ResponseType>;
+
+template <class ServiceType, class RequestType, class ResponseType>
+using ClientStreamingHandler =
+    ::grpc_impl::internal::ClientStreamingHandler<ServiceType, RequestType,
+                                                  ResponseType>;
+
+template <class ServiceType, class RequestType, class ResponseType>
+using ServerStreamingHandler =
+    ::grpc_impl::internal::ServerStreamingHandler<ServiceType, RequestType,
+                                                  ResponseType>;
+
+template <class Streamer, bool WriteNeeded>
+using TemplatedBidiStreamingHandler =
+    ::grpc_impl::internal::TemplatedBidiStreamingHandler<Streamer, WriteNeeded>;
+
+template <class RequestType, class ResponseType>
+using StreamedUnaryHandler =
+    ::grpc_impl::internal::StreamedUnaryHandler<RequestType, ResponseType>;
+
+template <class RequestType, class ResponseType>
+using SplitServerStreamingHandler =
+    ::grpc_impl::internal::SplitServerStreamingHandler<RequestType,
+                                                       ResponseType>;
+
+template <StatusCode code>
+using ErrorMethodHandler = ::grpc_impl::internal::ErrorMethodHandler<code>;
+
+using UnknownMethodHandler = ::grpc_impl::internal::UnknownMethodHandler;
+
+using ResourceExhaustedHandler =
+    ::grpc_impl::internal::ResourceExhaustedHandler;
+
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler_impl.h
new file mode 100644
index 0000000..6368b63
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/method_handler_impl.h	
@@ -0,0 +1,388 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
+
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+#include <grpcpp/impl/codegen/sync_stream_impl.h>
+
+namespace grpc_impl {
+
+namespace internal {
+
+// Invoke the method handler, fill in the status, and
+// return whether or not we finished safely (without an exception).
+// Note that exception handling is 0-cost in most compiler/library
+// implementations (except when an exception is actually thrown),
+// so this process doesn't require additional overhead in the common case.
+// Additionally, we don't need to return if we caught an exception or not;
+// the handling is the same in either case.
+template <class Callable>
+::grpc::Status CatchingFunctionHandler(Callable&& handler) {
+#if GRPC_ALLOW_EXCEPTIONS
+  try {
+    return handler();
+  } catch (...) {
+    return ::grpc::Status(::grpc::StatusCode::UNKNOWN,
+                          "Unexpected error in RPC handling");
+  }
+#else   // GRPC_ALLOW_EXCEPTIONS
+  return handler();
+#endif  // GRPC_ALLOW_EXCEPTIONS
+}
+
+/// A wrapper class of an application provided rpc method handler.
+template <class ServiceType, class RequestType, class ResponseType>
+class RpcMethodHandler : public ::grpc::internal::MethodHandler {
+ public:
+  RpcMethodHandler(
+      std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                                   const RequestType*, ResponseType*)>
+          func,
+      ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    ResponseType rsp;
+    ::grpc::Status status = param.status;
+    if (status.ok()) {
+      status = CatchingFunctionHandler([this, &param, &rsp] {
+        return func_(
+            service_,
+            static_cast<::grpc_impl::ServerContext*>(param.server_context),
+            static_cast<RequestType*>(param.request), &rsp);
+      });
+      static_cast<RequestType*>(param.request)->~RequestType();
+    }
+
+    GPR_CODEGEN_ASSERT(!param.server_context->sent_initial_metadata_);
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        ops;
+    ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                            param.server_context->initial_metadata_flags());
+    if (param.server_context->compression_level_set()) {
+      ops.set_compression_level(param.server_context->compression_level());
+    }
+    if (status.ok()) {
+      status = ops.SendMessagePtr(&rsp);
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    param.call->cq()->Pluck(&ops);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    ::grpc::Status* status, void** /*handler_data*/) final {
+    ::grpc::ByteBuffer buf;
+    buf.set_buffer(req);
+    auto* request =
+        new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+            call, sizeof(RequestType))) RequestType();
+    *status =
+        ::grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
+    buf.Release();
+    if (status->ok()) {
+      return request;
+    }
+    request->~RequestType();
+    return nullptr;
+  }
+
+ private:
+  /// Application provided rpc handler function.
+  std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                               const RequestType*, ResponseType*)>
+      func_;
+  // The class the above handler function lives in.
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided client streaming handler.
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler : public ::grpc::internal::MethodHandler {
+ public:
+  ClientStreamingHandler(
+      std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                                   ::grpc_impl::ServerReader<RequestType>*,
+                                   ResponseType*)>
+          func,
+      ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    ::grpc_impl::ServerReader<RequestType> reader(
+        param.call,
+        static_cast<::grpc_impl::ServerContext*>(param.server_context));
+    ResponseType rsp;
+    ::grpc::Status status =
+        CatchingFunctionHandler([this, &param, &reader, &rsp] {
+          return func_(
+              service_,
+              static_cast<::grpc_impl::ServerContext*>(param.server_context),
+              &reader, &rsp);
+        });
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+    }
+    if (status.ok()) {
+      status = ops.SendMessagePtr(&rsp);
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    param.call->cq()->Pluck(&ops);
+  }
+
+ private:
+  std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                               ::grpc_impl::ServerReader<RequestType>*,
+                               ResponseType*)>
+      func_;
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided server streaming handler.
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler : public ::grpc::internal::MethodHandler {
+ public:
+  ServerStreamingHandler(
+      std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                                   const RequestType*,
+                                   ::grpc_impl::ServerWriter<ResponseType>*)>
+          func,
+      ServiceType* service)
+      : func_(func), service_(service) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    ::grpc::Status status = param.status;
+    if (status.ok()) {
+      ::grpc_impl::ServerWriter<ResponseType> writer(
+          param.call,
+          static_cast<::grpc_impl::ServerContext*>(param.server_context));
+      status = CatchingFunctionHandler([this, &param, &writer] {
+        return func_(
+            service_,
+            static_cast<::grpc_impl::ServerContext*>(param.server_context),
+            static_cast<RequestType*>(param.request), &writer);
+      });
+      static_cast<RequestType*>(param.request)->~RequestType();
+    }
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    if (param.server_context->has_pending_ops_) {
+      param.call->cq()->Pluck(&param.server_context->pending_ops_);
+    }
+    param.call->cq()->Pluck(&ops);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    ::grpc::Status* status, void** /*handler_data*/) final {
+    ::grpc::ByteBuffer buf;
+    buf.set_buffer(req);
+    auto* request =
+        new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+            call, sizeof(RequestType))) RequestType();
+    *status =
+        ::grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
+    buf.Release();
+    if (status->ok()) {
+      return request;
+    }
+    request->~RequestType();
+    return nullptr;
+  }
+
+ private:
+  std::function<::grpc::Status(ServiceType*, ::grpc_impl::ServerContext*,
+                               const RequestType*,
+                               ::grpc_impl::ServerWriter<ResponseType>*)>
+      func_;
+  ServiceType* service_;
+};
+
+/// A wrapper class of an application provided bidi-streaming handler.
+/// This also applies to server-streamed implementation of a unary method
+/// with the additional requirement that such methods must have done a
+/// write for status to be ok
+/// Since this is used by more than 1 class, the service is not passed in.
+/// Instead, it is expected to be an implicitly-captured argument of func
+/// (through bind or something along those lines)
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler : public ::grpc::internal::MethodHandler {
+ public:
+  TemplatedBidiStreamingHandler(
+      std::function<::grpc::Status(::grpc_impl::ServerContext*, Streamer*)>
+          func)
+      : func_(func), write_needed_(WriteNeeded) {}
+
+  void RunHandler(const HandlerParameter& param) final {
+    Streamer stream(param.call, static_cast<::grpc_impl::ServerContext*>(
+                                    param.server_context));
+    ::grpc::Status status = CatchingFunctionHandler([this, &param, &stream] {
+      return func_(
+          static_cast<::grpc_impl::ServerContext*>(param.server_context),
+          &stream);
+    });
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpServerSendStatus>
+        ops;
+    if (!param.server_context->sent_initial_metadata_) {
+      ops.SendInitialMetadata(&param.server_context->initial_metadata_,
+                              param.server_context->initial_metadata_flags());
+      if (param.server_context->compression_level_set()) {
+        ops.set_compression_level(param.server_context->compression_level());
+      }
+      if (write_needed_ && status.ok()) {
+        // If we needed a write but never did one, we need to mark the
+        // status as a fail
+        status = ::grpc::Status(::grpc::StatusCode::INTERNAL,
+                                "Service did not provide response message");
+      }
+    }
+    ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
+    param.call->PerformOps(&ops);
+    if (param.server_context->has_pending_ops_) {
+      param.call->cq()->Pluck(&param.server_context->pending_ops_);
+    }
+    param.call->cq()->Pluck(&ops);
+  }
+
+ private:
+  std::function<::grpc::Status(::grpc_impl::ServerContext*, Streamer*)> func_;
+  const bool write_needed_;
+};
+
+template <class ServiceType, class RequestType, class ResponseType>
+class BidiStreamingHandler
+    : public TemplatedBidiStreamingHandler<
+          ::grpc_impl::ServerReaderWriter<ResponseType, RequestType>, false> {
+ public:
+  BidiStreamingHandler(
+      std::function<::grpc::Status(
+          ServiceType*, ::grpc_impl::ServerContext*,
+          ::grpc_impl::ServerReaderWriter<ResponseType, RequestType>*)>
+          func,
+      ServiceType* service)
+      : TemplatedBidiStreamingHandler<
+            ::grpc_impl::ServerReaderWriter<ResponseType, RequestType>, false>(
+            std::bind(func, service, std::placeholders::_1,
+                      std::placeholders::_2)) {}
+};
+
+template <class RequestType, class ResponseType>
+class StreamedUnaryHandler
+    : public TemplatedBidiStreamingHandler<
+          ::grpc_impl::ServerUnaryStreamer<RequestType, ResponseType>, true> {
+ public:
+  explicit StreamedUnaryHandler(
+      std::function<::grpc::Status(
+          ::grpc_impl::ServerContext*,
+          ::grpc_impl::ServerUnaryStreamer<RequestType, ResponseType>*)>
+          func)
+      : TemplatedBidiStreamingHandler<
+            ::grpc_impl::ServerUnaryStreamer<RequestType, ResponseType>, true>(
+            func) {}
+};
+
+template <class RequestType, class ResponseType>
+class SplitServerStreamingHandler
+    : public TemplatedBidiStreamingHandler<
+          ::grpc_impl::ServerSplitStreamer<RequestType, ResponseType>, false> {
+ public:
+  explicit SplitServerStreamingHandler(
+      std::function<::grpc::Status(
+          ::grpc_impl::ServerContext*,
+          ::grpc_impl::ServerSplitStreamer<RequestType, ResponseType>*)>
+          func)
+      : TemplatedBidiStreamingHandler<
+            ::grpc_impl::ServerSplitStreamer<RequestType, ResponseType>, false>(
+            func) {}
+};
+
+/// General method handler class for errors that prevent real method use
+/// e.g., handle unknown method by returning UNIMPLEMENTED error.
+template <::grpc::StatusCode code>
+class ErrorMethodHandler : public ::grpc::internal::MethodHandler {
+ public:
+  template <class T>
+  static void FillOps(::grpc_impl::ServerContextBase* context, T* ops) {
+    ::grpc::Status status(code, "");
+    if (!context->sent_initial_metadata_) {
+      ops->SendInitialMetadata(&context->initial_metadata_,
+                               context->initial_metadata_flags());
+      if (context->compression_level_set()) {
+        ops->set_compression_level(context->compression_level());
+      }
+      context->sent_initial_metadata_ = true;
+    }
+    ops->ServerSendStatus(&context->trailing_metadata_, status);
+  }
+
+  void RunHandler(const HandlerParameter& param) final {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpServerSendStatus>
+        ops;
+    FillOps(param.server_context, &ops);
+    param.call->PerformOps(&ops);
+    param.call->cq()->Pluck(&ops);
+  }
+
+  void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
+                    ::grpc::Status* /*status*/, void** /*handler_data*/) final {
+    // We have to destroy any request payload
+    if (req != nullptr) {
+      ::grpc::g_core_codegen_interface->grpc_byte_buffer_destroy(req);
+    }
+    return nullptr;
+  }
+};
+
+typedef ErrorMethodHandler<::grpc::StatusCode::UNIMPLEMENTED>
+    UnknownMethodHandler;
+typedef ErrorMethodHandler<::grpc::StatusCode::RESOURCE_EXHAUSTED>
+    ResourceExhaustedHandler;
+
+}  // namespace internal
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_method.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_method.h
new file mode 100644
index 0000000..9dcde95
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_method.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
+#define GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
+
+#include <memory>
+
+#include <grpcpp/impl/codegen/channel_interface.h>
+
+namespace grpc {
+namespace internal {
+/// Descriptor of an RPC method
+class RpcMethod {
+ public:
+  enum RpcType {
+    NORMAL_RPC = 0,
+    CLIENT_STREAMING,  // request streaming
+    SERVER_STREAMING,  // response streaming
+    BIDI_STREAMING
+  };
+
+  RpcMethod(const char* name, RpcType type)
+      : name_(name), method_type_(type), channel_tag_(NULL) {}
+
+  RpcMethod(const char* name, RpcType type,
+            const std::shared_ptr<ChannelInterface>& channel)
+      : name_(name),
+        method_type_(type),
+        channel_tag_(channel->RegisterMethod(name)) {}
+
+  const char* name() const { return name_; }
+  RpcType method_type() const { return method_type_; }
+  void SetMethodType(RpcType type) { method_type_ = type; }
+  void* channel_tag() const { return channel_tag_; }
+
+ private:
+  const char* const name_;
+  RpcType method_type_;
+  void* const channel_tag_;
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_RPC_METHOD_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_service_method.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_service_method.h
new file mode 100644
index 0000000..da0e5b6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/rpc_service_method.h	
@@ -0,0 +1,156 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
+#define GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
+
+#include <climits>
+#include <functional>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include <grpc/impl/codegen/log.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/rpc_method.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+class ServerContextBase;
+}  // namespace grpc_impl
+
+namespace grpc {
+namespace internal {
+/// Base class for running an RPC handler.
+class MethodHandler {
+ public:
+  virtual ~MethodHandler() {}
+  struct HandlerParameter {
+    /// Constructor for HandlerParameter
+    ///
+    /// \param c : the gRPC Call structure for this server call
+    /// \param context : the ServerContext structure for this server call
+    /// \param req : the request payload, if appropriate for this RPC
+    /// \param req_status : the request status after any interceptors have run
+    /// \param handler_data: internal data for the handler.
+    /// \param requester : used only by the callback API. It is a function
+    ///        called by the RPC Controller to request another RPC (and also
+    ///        to set up the state required to make that request possible)
+    HandlerParameter(Call* c, ::grpc_impl::ServerContextBase* context,
+                     void* req, Status req_status, void* handler_data,
+                     std::function<void()> requester)
+        : call(c),
+          server_context(context),
+          request(req),
+          status(req_status),
+          internal_data(handler_data),
+          call_requester(std::move(requester)) {}
+    ~HandlerParameter() {}
+    Call* const call;
+    ::grpc_impl::ServerContextBase* const server_context;
+    void* const request;
+    const Status status;
+    void* const internal_data;
+    const std::function<void()> call_requester;
+  };
+  virtual void RunHandler(const HandlerParameter& param) = 0;
+
+  /* Returns a pointer to the deserialized request. \a status reflects the
+     result of deserialization. This pointer and the status should be filled in
+     a HandlerParameter and passed to RunHandler. It is illegal to access the
+     pointer after calling RunHandler. Ownership of the deserialized request is
+     retained by the handler. Returns nullptr if deserialization failed. */
+  virtual void* Deserialize(grpc_call* /*call*/, grpc_byte_buffer* req,
+                            Status* /*status*/, void** /*handler_data*/) {
+    GPR_CODEGEN_ASSERT(req == nullptr);
+    return nullptr;
+  }
+};
+
+/// Server side rpc method class
+class RpcServiceMethod : public RpcMethod {
+ public:
+  /// Takes ownership of the handler
+  RpcServiceMethod(const char* name, RpcMethod::RpcType type,
+                   MethodHandler* handler)
+      : RpcMethod(name, type),
+        server_tag_(nullptr),
+        api_type_(ApiType::SYNC),
+        handler_(handler) {}
+
+  enum class ApiType {
+    SYNC,
+    ASYNC,
+    RAW,
+    CALL_BACK,  // not CALLBACK because that is reserved in Windows
+    RAW_CALL_BACK,
+  };
+
+  void set_server_tag(void* tag) { server_tag_ = tag; }
+  void* server_tag() const { return server_tag_; }
+  /// if MethodHandler is nullptr, then this is an async method
+  MethodHandler* handler() const { return handler_.get(); }
+  ApiType api_type() const { return api_type_; }
+  void SetHandler(MethodHandler* handler) { handler_.reset(handler); }
+  void SetServerApiType(RpcServiceMethod::ApiType type) {
+    if ((api_type_ == ApiType::SYNC) &&
+        (type == ApiType::ASYNC || type == ApiType::RAW)) {
+      // this marks this method as async
+      handler_.reset();
+    } else if (api_type_ != ApiType::SYNC) {
+      // this is not an error condition, as it allows users to declare a server
+      // like WithRawMethod_foo<AsyncService>. However since it
+      // overwrites behavior, it should be logged.
+      gpr_log(
+          GPR_INFO,
+          "You are marking method %s as '%s', even though it was "
+          "previously marked '%s'. This behavior will overwrite the original "
+          "behavior. If you expected this then ignore this message.",
+          name(), TypeToString(api_type_), TypeToString(type));
+    }
+    api_type_ = type;
+  }
+
+ private:
+  void* server_tag_;
+  ApiType api_type_;
+  std::unique_ptr<MethodHandler> handler_;
+
+  const char* TypeToString(RpcServiceMethod::ApiType type) {
+    switch (type) {
+      case ApiType::SYNC:
+        return "sync";
+      case ApiType::ASYNC:
+        return "async";
+      case ApiType::RAW:
+        return "raw";
+      case ApiType::CALL_BACK:
+        return "callback";
+      case ApiType::RAW_CALL_BACK:
+        return "raw_callback";
+      default:
+        GPR_UNREACHABLE_CODE(return "unknown");
+    }
+  }
+};
+}  // namespace internal
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/security/auth_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/security/auth_context.h
new file mode 100644
index 0000000..6c0089c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/security/auth_context.h	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
+#define GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
+
+#include <iterator>
+#include <vector>
+
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+
+struct grpc_auth_context;
+struct grpc_auth_property;
+struct grpc_auth_property_iterator;
+
+namespace grpc {
+class SecureAuthContext;
+
+typedef std::pair<string_ref, string_ref> AuthProperty;
+
+class AuthPropertyIterator
+    : public std::iterator<std::input_iterator_tag, const AuthProperty> {
+ public:
+  ~AuthPropertyIterator();
+  AuthPropertyIterator& operator++();
+  AuthPropertyIterator operator++(int);
+  bool operator==(const AuthPropertyIterator& rhs) const;
+  bool operator!=(const AuthPropertyIterator& rhs) const;
+  const AuthProperty operator*();
+
+ protected:
+  AuthPropertyIterator();
+  AuthPropertyIterator(const grpc_auth_property* property,
+                       const grpc_auth_property_iterator* iter);
+
+ private:
+  friend class SecureAuthContext;
+  const grpc_auth_property* property_;
+  // The following items form a grpc_auth_property_iterator.
+  const grpc_auth_context* ctx_;
+  size_t index_;
+  const char* name_;
+};
+
+/// Class encapsulating the Authentication Information.
+///
+/// It includes the secure identity of the peer, the type of secure transport
+/// used as well as any other properties required by the authorization layer.
+class AuthContext {
+ public:
+  virtual ~AuthContext() {}
+
+  /// Returns true if the peer is authenticated.
+  virtual bool IsPeerAuthenticated() const = 0;
+
+  /// A peer identity.
+  ///
+  /// It is, in general, comprised of one or more properties (in which case they
+  /// have the same name).
+  virtual std::vector<grpc::string_ref> GetPeerIdentity() const = 0;
+  virtual grpc::string GetPeerIdentityPropertyName() const = 0;
+
+  /// Returns all the property values with the given name.
+  virtual std::vector<grpc::string_ref> FindPropertyValues(
+      const grpc::string& name) const = 0;
+
+  /// Iteration over all the properties.
+  virtual AuthPropertyIterator begin() const = 0;
+  virtual AuthPropertyIterator end() const = 0;
+
+  /// Mutation functions: should only be used by an AuthMetadataProcessor.
+  virtual void AddProperty(const grpc::string& key,
+                           const string_ref& value) = 0;
+  virtual bool SetPeerIdentityPropertyName(const string& name) = 0;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SECURITY_AUTH_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/serialization_traits.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/serialization_traits.h
new file mode 100644
index 0000000..8f79223
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/serialization_traits.h	
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
+#define GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
+
+namespace grpc {
+
+/// Defines how to serialize and deserialize some type.
+///
+/// Used for hooking different message serialization API's into GRPC.
+/// Each SerializationTraits<Message> implementation must provide the
+/// following functions:
+/// 1.  static Status Serialize(const Message& msg,
+///                             ByteBuffer* buffer,
+///                             bool* own_buffer);
+///     OR
+///     static Status Serialize(const Message& msg,
+///                             grpc_byte_buffer** buffer,
+///                             bool* own_buffer);
+///     The former is preferred; the latter is deprecated
+///
+/// 2.  static Status Deserialize(ByteBuffer* buffer,
+///                               Message* msg);
+///     OR
+///     static Status Deserialize(grpc_byte_buffer* buffer,
+///                               Message* msg);
+///     The former is preferred; the latter is deprecated
+///
+/// Serialize is required to convert message to a ByteBuffer, and
+/// return that byte buffer through *buffer. *own_buffer should
+/// be set to true if the caller owns said byte buffer, or false if
+/// ownership is retained elsewhere.
+///
+/// Deserialize is required to convert buffer into the message stored at
+/// msg. max_receive_message_size is passed in as a bound on the maximum
+/// number of message bytes Deserialize should accept.
+///
+/// Both functions return a Status, allowing them to explain what went
+/// wrong if required.
+template <class Message,
+          class UnusedButHereForPartialTemplateSpecialization = void>
+class SerializationTraits;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERIALIZATION_TRAITS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback.h
new file mode 100644
index 0000000..1d8b2f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
+
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+
+namespace grpc {
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+template <class Request>
+using ServerReadReactor = ::grpc_impl::ServerReadReactor<Request>;
+
+template <class Response>
+using ServerWriteReactor = ::grpc_impl::ServerWriteReactor<Response>;
+
+template <class Request, class Response>
+using ServerBidiReactor = ::grpc_impl::ServerBidiReactor<Request, Response>;
+
+using ServerUnaryReactor = ::grpc_impl::ServerUnaryReactor;
+#endif
+
+// TODO(vjpai): Remove namespace experimental when de-experimentalized fully.
+namespace experimental {
+
+template <class Request>
+using ServerReadReactor = ::grpc_impl::ServerReadReactor<Request>;
+
+template <class Response>
+using ServerWriteReactor = ::grpc_impl::ServerWriteReactor<Response>;
+
+template <class Request, class Response>
+using ServerBidiReactor = ::grpc_impl::ServerBidiReactor<Request, Response>;
+
+using ServerUnaryReactor = ::grpc_impl::ServerUnaryReactor;
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_handlers.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_handlers.h
new file mode 100644
index 0000000..0c65124
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_handlers.h	
@@ -0,0 +1,880 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
+
+#include <grpcpp/impl/codegen/message_allocator.h>
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+#include <grpcpp/impl/codegen/server_context_impl.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+namespace internal {
+
+template <class RequestType, class ResponseType>
+class CallbackUnaryHandler : public ::grpc::internal::MethodHandler {
+ public:
+  explicit CallbackUnaryHandler(
+      std::function<ServerUnaryReactor*(::grpc_impl::CallbackServerContext*,
+                                        const RequestType*, ResponseType*)>
+          get_reactor)
+      : get_reactor_(std::move(get_reactor)) {}
+
+  void SetMessageAllocator(
+      ::grpc::experimental::MessageAllocator<RequestType, ResponseType>*
+          allocator) {
+    allocator_ = allocator;
+  }
+
+  void RunHandler(const HandlerParameter& param) final {
+    // Arena allocate a controller structure (that includes request/response)
+    ::grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+    auto* allocator_state = static_cast<
+        ::grpc::experimental::MessageHolder<RequestType, ResponseType>*>(
+        param.internal_data);
+
+    auto* call = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        param.call->call(), sizeof(ServerCallbackUnaryImpl)))
+        ServerCallbackUnaryImpl(
+            static_cast<::grpc_impl::CallbackServerContext*>(
+                param.server_context),
+            param.call, allocator_state, std::move(param.call_requester));
+    param.server_context->BeginCompletionOp(
+        param.call, [call](bool) { call->MaybeDone(); }, call);
+
+    ServerUnaryReactor* reactor = nullptr;
+    if (param.status.ok()) {
+      reactor = ::grpc::internal::CatchingReactorGetter<ServerUnaryReactor>(
+          get_reactor_,
+          static_cast<::grpc_impl::CallbackServerContext*>(
+              param.server_context),
+          call->request(), call->response());
+    }
+
+    if (reactor == nullptr) {
+      // if deserialization or reactor creator failed, we need to fail the call
+      reactor = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+          param.call->call(), sizeof(UnimplementedUnaryReactor)))
+          UnimplementedUnaryReactor(
+              ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, ""));
+    }
+
+    /// Invoke SetupReactor as the last part of the handler
+    call->SetupReactor(reactor);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    ::grpc::Status* status, void** handler_data) final {
+    ::grpc::ByteBuffer buf;
+    buf.set_buffer(req);
+    RequestType* request = nullptr;
+    ::grpc::experimental::MessageHolder<RequestType, ResponseType>*
+        allocator_state = nullptr;
+    if (allocator_ != nullptr) {
+      allocator_state = allocator_->AllocateMessages();
+    } else {
+      allocator_state =
+          new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+              call, sizeof(DefaultMessageHolder<RequestType, ResponseType>)))
+              DefaultMessageHolder<RequestType, ResponseType>();
+    }
+    *handler_data = allocator_state;
+    request = allocator_state->request();
+    *status =
+        ::grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
+    buf.Release();
+    if (status->ok()) {
+      return request;
+    }
+    // Clean up on deserialization failure.
+    allocator_state->Release();
+    return nullptr;
+  }
+
+ private:
+  std::function<ServerUnaryReactor*(::grpc_impl::CallbackServerContext*,
+                                    const RequestType*, ResponseType*)>
+      get_reactor_;
+  ::grpc::experimental::MessageAllocator<RequestType, ResponseType>*
+      allocator_ = nullptr;
+
+  class ServerCallbackUnaryImpl : public ServerCallbackUnary {
+   public:
+    void Finish(::grpc::Status s) override {
+      // A callback that only contains a call to MaybeDone can be run as an
+      // inline callback regardless of whether or not OnDone is inlineable
+      // because if the actual OnDone callback needs to be scheduled, MaybeDone
+      // is responsible for dispatching to an executor thread if needed. Thus,
+      // when setting up the finish_tag_, we can set its own callback to
+      // inlineable.
+      finish_tag_.Set(
+          call_.call(),
+          [this](bool) {
+            this->MaybeDone(
+                reactor_.load(std::memory_order_relaxed)->InternalInlineable());
+          },
+          &finish_ops_, /*can_inline=*/true);
+      finish_ops_.set_core_cq_tag(&finish_tag_);
+
+      if (!ctx_->sent_initial_metadata_) {
+        finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                        ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          finish_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      // The response is dropped if the status is not OK.
+      if (s.ok()) {
+        finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_,
+                                     finish_ops_.SendMessagePtr(response()));
+      } else {
+        finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
+      }
+      finish_ops_.set_core_cq_tag(&finish_tag_);
+      call_.PerformOps(&finish_ops_);
+    }
+
+    void SendInitialMetadata() override {
+      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      this->Ref();
+      // The callback for this function should not be marked inline because it
+      // is directly invoking a user-controlled reaction
+      // (OnSendInitialMetadataDone). Thus it must be dispatched to an executor
+      // thread. However, any OnDone needed after that can be inlined because it
+      // is already running on an executor thread.
+      meta_tag_.Set(call_.call(),
+                    [this](bool ok) {
+                      ServerUnaryReactor* reactor =
+                          reactor_.load(std::memory_order_relaxed);
+                      reactor->OnSendInitialMetadataDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &meta_ops_, /*can_inline=*/false);
+      meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                    ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        meta_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+      meta_ops_.set_core_cq_tag(&meta_tag_);
+      call_.PerformOps(&meta_ops_);
+    }
+
+   private:
+    friend class CallbackUnaryHandler<RequestType, ResponseType>;
+
+    ServerCallbackUnaryImpl(
+        ::grpc_impl::CallbackServerContext* ctx, ::grpc::internal::Call* call,
+        ::grpc::experimental::MessageHolder<RequestType, ResponseType>*
+            allocator_state,
+        std::function<void()> call_requester)
+        : ctx_(ctx),
+          call_(*call),
+          allocator_state_(allocator_state),
+          call_requester_(std::move(call_requester)) {
+      ctx_->set_message_allocator_state(allocator_state);
+    }
+
+    /// SetupReactor binds the reactor (which also releases any queued
+    /// operations), maybe calls OnCancel if possible/needed, and maybe marks
+    /// the completion of the RPC. This should be the last component of the
+    /// handler.
+    void SetupReactor(ServerUnaryReactor* reactor) {
+      reactor_.store(reactor, std::memory_order_relaxed);
+      this->BindReactor(reactor);
+      this->MaybeCallOnCancel(reactor);
+      this->MaybeDone(reactor->InternalInlineable());
+    }
+
+    const RequestType* request() { return allocator_state_->request(); }
+    ResponseType* response() { return allocator_state_->response(); }
+
+    void CallOnDone() override {
+      reactor_.load(std::memory_order_relaxed)->OnDone();
+      grpc_call* call = call_.call();
+      auto call_requester = std::move(call_requester_);
+      allocator_state_->Release();
+      this->~ServerCallbackUnaryImpl();  // explicitly call destructor
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      call_requester();
+    }
+
+    ServerReactor* reactor() override {
+      return reactor_.load(std::memory_order_relaxed);
+    }
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        meta_ops_;
+    ::grpc::internal::CallbackWithSuccessTag meta_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        finish_ops_;
+    ::grpc::internal::CallbackWithSuccessTag finish_tag_;
+
+    ::grpc_impl::CallbackServerContext* const ctx_;
+    ::grpc::internal::Call call_;
+    ::grpc::experimental::MessageHolder<RequestType, ResponseType>* const
+        allocator_state_;
+    std::function<void()> call_requester_;
+    // reactor_ can always be loaded/stored with relaxed memory ordering because
+    // its value is only set once, independently of other data in the object,
+    // and the loads that use it will always actually come provably later even
+    // though they are from different threads since they are triggered by
+    // actions initiated only by the setting up of the reactor_ variable. In
+    // a sense, it's a delayed "const": it gets its value from the SetupReactor
+    // method (not the constructor, so it's not a true const), but it doesn't
+    // change after that and it only gets used by actions caused, directly or
+    // indirectly, by that setup. This comment also applies to the reactor_
+    // variables of the other streaming objects in this file.
+    std::atomic<ServerUnaryReactor*> reactor_;
+    // callbacks_outstanding_ follows a refcount pattern
+    std::atomic<intptr_t> callbacks_outstanding_{
+        3};  // reserve for start, Finish, and CompletionOp
+  };
+};
+
+template <class RequestType, class ResponseType>
+class CallbackClientStreamingHandler : public ::grpc::internal::MethodHandler {
+ public:
+  explicit CallbackClientStreamingHandler(
+      std::function<ServerReadReactor<RequestType>*(
+          ::grpc_impl::CallbackServerContext*, ResponseType*)>
+          get_reactor)
+      : get_reactor_(std::move(get_reactor)) {}
+  void RunHandler(const HandlerParameter& param) final {
+    // Arena allocate a reader structure (that includes response)
+    ::grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+
+    auto* reader = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        param.call->call(), sizeof(ServerCallbackReaderImpl)))
+        ServerCallbackReaderImpl(
+            static_cast<::grpc_impl::CallbackServerContext*>(
+                param.server_context),
+            param.call, std::move(param.call_requester));
+    // Inlineable OnDone can be false in the CompletionOp callback because there
+    // is no read reactor that has an inlineable OnDone; this only applies to
+    // the DefaultReactor (which is unary).
+    param.server_context->BeginCompletionOp(
+        param.call,
+        [reader](bool) { reader->MaybeDone(/*inlineable_ondone=*/false); },
+        reader);
+
+    ServerReadReactor<RequestType>* reactor = nullptr;
+    if (param.status.ok()) {
+      reactor = ::grpc::internal::CatchingReactorGetter<
+          ServerReadReactor<RequestType>>(
+          get_reactor_,
+          static_cast<::grpc_impl::CallbackServerContext*>(
+              param.server_context),
+          reader->response());
+    }
+
+    if (reactor == nullptr) {
+      // if deserialization or reactor creator failed, we need to fail the call
+      reactor = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+          param.call->call(), sizeof(UnimplementedReadReactor<RequestType>)))
+          UnimplementedReadReactor<RequestType>(
+              ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, ""));
+    }
+
+    reader->SetupReactor(reactor);
+  }
+
+ private:
+  std::function<ServerReadReactor<RequestType>*(
+      ::grpc_impl::CallbackServerContext*, ResponseType*)>
+      get_reactor_;
+
+  class ServerCallbackReaderImpl : public ServerCallbackReader<RequestType> {
+   public:
+    void Finish(::grpc::Status s) override {
+      // A finish tag with only MaybeDone can have its callback inlined
+      // regardless even if OnDone is not inlineable because this callback just
+      // checks a ref and then decides whether or not to dispatch OnDone.
+      finish_tag_.Set(call_.call(),
+                      [this](bool) {
+                        // Inlineable OnDone can be false here because there is
+                        // no read reactor that has an inlineable OnDone; this
+                        // only applies to the DefaultReactor (which is unary).
+                        this->MaybeDone(/*inlineable_ondone=*/false);
+                      },
+                      &finish_ops_, /*can_inline=*/true);
+      if (!ctx_->sent_initial_metadata_) {
+        finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                        ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          finish_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      // The response is dropped if the status is not OK.
+      if (s.ok()) {
+        finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_,
+                                     finish_ops_.SendMessagePtr(&resp_));
+      } else {
+        finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
+      }
+      finish_ops_.set_core_cq_tag(&finish_tag_);
+      call_.PerformOps(&finish_ops_);
+    }
+
+    void SendInitialMetadata() override {
+      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      this->Ref();
+      // The callback for this function should not be inlined because it invokes
+      // a user-controlled reaction, but any resulting OnDone can be inlined in
+      // the executor to which this callback is dispatched.
+      meta_tag_.Set(call_.call(),
+                    [this](bool ok) {
+                      ServerReadReactor<RequestType>* reactor =
+                          reactor_.load(std::memory_order_relaxed);
+                      reactor->OnSendInitialMetadataDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &meta_ops_, /*can_inline=*/false);
+      meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                    ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        meta_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+      meta_ops_.set_core_cq_tag(&meta_tag_);
+      call_.PerformOps(&meta_ops_);
+    }
+
+    void Read(RequestType* req) override {
+      this->Ref();
+      read_ops_.RecvMessage(req);
+      call_.PerformOps(&read_ops_);
+    }
+
+   private:
+    friend class CallbackClientStreamingHandler<RequestType, ResponseType>;
+
+    ServerCallbackReaderImpl(::grpc_impl::CallbackServerContext* ctx,
+                             ::grpc::internal::Call* call,
+                             std::function<void()> call_requester)
+        : ctx_(ctx), call_(*call), call_requester_(std::move(call_requester)) {}
+
+    void SetupReactor(ServerReadReactor<RequestType>* reactor) {
+      reactor_.store(reactor, std::memory_order_relaxed);
+      // The callback for this function should not be inlined because it invokes
+      // a user-controlled reaction, but any resulting OnDone can be inlined in
+      // the executor to which this callback is dispatched.
+      read_tag_.Set(call_.call(),
+                    [this, reactor](bool ok) {
+                      reactor->OnReadDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &read_ops_, /*can_inline=*/false);
+      read_ops_.set_core_cq_tag(&read_tag_);
+      this->BindReactor(reactor);
+      this->MaybeCallOnCancel(reactor);
+      // Inlineable OnDone can be false here because there is no read
+      // reactor that has an inlineable OnDone; this only applies to the
+      // DefaultReactor (which is unary).
+      this->MaybeDone(/*inlineable_ondone=*/false);
+    }
+
+    ~ServerCallbackReaderImpl() {}
+
+    ResponseType* response() { return &resp_; }
+
+    void CallOnDone() override {
+      reactor_.load(std::memory_order_relaxed)->OnDone();
+      grpc_call* call = call_.call();
+      auto call_requester = std::move(call_requester_);
+      this->~ServerCallbackReaderImpl();  // explicitly call destructor
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      call_requester();
+    }
+
+    ServerReactor* reactor() override {
+      return reactor_.load(std::memory_order_relaxed);
+    }
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        meta_ops_;
+    ::grpc::internal::CallbackWithSuccessTag meta_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        finish_ops_;
+    ::grpc::internal::CallbackWithSuccessTag finish_tag_;
+    ::grpc::internal::CallOpSet<
+        ::grpc::internal::CallOpRecvMessage<RequestType>>
+        read_ops_;
+    ::grpc::internal::CallbackWithSuccessTag read_tag_;
+
+    ::grpc_impl::CallbackServerContext* const ctx_;
+    ::grpc::internal::Call call_;
+    ResponseType resp_;
+    std::function<void()> call_requester_;
+    // The memory ordering of reactor_ follows ServerCallbackUnaryImpl.
+    std::atomic<ServerReadReactor<RequestType>*> reactor_;
+    // callbacks_outstanding_ follows a refcount pattern
+    std::atomic<intptr_t> callbacks_outstanding_{
+        3};  // reserve for OnStarted, Finish, and CompletionOp
+  };
+};
+
+template <class RequestType, class ResponseType>
+class CallbackServerStreamingHandler : public ::grpc::internal::MethodHandler {
+ public:
+  explicit CallbackServerStreamingHandler(
+      std::function<ServerWriteReactor<ResponseType>*(
+          ::grpc_impl::CallbackServerContext*, const RequestType*)>
+          get_reactor)
+      : get_reactor_(std::move(get_reactor)) {}
+  void RunHandler(const HandlerParameter& param) final {
+    // Arena allocate a writer structure
+    ::grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+
+    auto* writer = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        param.call->call(), sizeof(ServerCallbackWriterImpl)))
+        ServerCallbackWriterImpl(
+            static_cast<::grpc_impl::CallbackServerContext*>(
+                param.server_context),
+            param.call, static_cast<RequestType*>(param.request),
+            std::move(param.call_requester));
+    // Inlineable OnDone can be false in the CompletionOp callback because there
+    // is no write reactor that has an inlineable OnDone; this only applies to
+    // the DefaultReactor (which is unary).
+    param.server_context->BeginCompletionOp(
+        param.call,
+        [writer](bool) { writer->MaybeDone(/*inlineable_ondone=*/false); },
+        writer);
+
+    ServerWriteReactor<ResponseType>* reactor = nullptr;
+    if (param.status.ok()) {
+      reactor = ::grpc::internal::CatchingReactorGetter<
+          ServerWriteReactor<ResponseType>>(
+          get_reactor_,
+          static_cast<::grpc_impl::CallbackServerContext*>(
+              param.server_context),
+          writer->request());
+    }
+    if (reactor == nullptr) {
+      // if deserialization or reactor creator failed, we need to fail the call
+      reactor = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+          param.call->call(), sizeof(UnimplementedWriteReactor<ResponseType>)))
+          UnimplementedWriteReactor<ResponseType>(
+              ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, ""));
+    }
+
+    writer->SetupReactor(reactor);
+  }
+
+  void* Deserialize(grpc_call* call, grpc_byte_buffer* req,
+                    ::grpc::Status* status, void** /*handler_data*/) final {
+    ::grpc::ByteBuffer buf;
+    buf.set_buffer(req);
+    auto* request =
+        new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+            call, sizeof(RequestType))) RequestType();
+    *status =
+        ::grpc::SerializationTraits<RequestType>::Deserialize(&buf, request);
+    buf.Release();
+    if (status->ok()) {
+      return request;
+    }
+    request->~RequestType();
+    return nullptr;
+  }
+
+ private:
+  std::function<ServerWriteReactor<ResponseType>*(
+      ::grpc_impl::CallbackServerContext*, const RequestType*)>
+      get_reactor_;
+
+  class ServerCallbackWriterImpl : public ServerCallbackWriter<ResponseType> {
+   public:
+    void Finish(::grpc::Status s) override {
+      // A finish tag with only MaybeDone can have its callback inlined
+      // regardless even if OnDone is not inlineable because this callback just
+      // checks a ref and then decides whether or not to dispatch OnDone.
+      finish_tag_.Set(call_.call(),
+                      [this](bool) {
+                        // Inlineable OnDone can be false here because there is
+                        // no write reactor that has an inlineable OnDone; this
+                        // only applies to the DefaultReactor (which is unary).
+                        this->MaybeDone(/*inlineable_ondone=*/false);
+                      },
+                      &finish_ops_, /*can_inline=*/true);
+      finish_ops_.set_core_cq_tag(&finish_tag_);
+
+      if (!ctx_->sent_initial_metadata_) {
+        finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                        ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          finish_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
+      call_.PerformOps(&finish_ops_);
+    }
+
+    void SendInitialMetadata() override {
+      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      this->Ref();
+      // The callback for this function should not be inlined because it invokes
+      // a user-controlled reaction, but any resulting OnDone can be inlined in
+      // the executor to which this callback is dispatched.
+      meta_tag_.Set(call_.call(),
+                    [this](bool ok) {
+                      ServerWriteReactor<ResponseType>* reactor =
+                          reactor_.load(std::memory_order_relaxed);
+                      reactor->OnSendInitialMetadataDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &meta_ops_, /*can_inline=*/false);
+      meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                    ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        meta_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+      meta_ops_.set_core_cq_tag(&meta_tag_);
+      call_.PerformOps(&meta_ops_);
+    }
+
+    void Write(const ResponseType* resp,
+               ::grpc::WriteOptions options) override {
+      this->Ref();
+      if (options.is_last_message()) {
+        options.set_buffer_hint();
+      }
+      if (!ctx_->sent_initial_metadata_) {
+        write_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                       ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          write_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      // TODO(vjpai): don't assert
+      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
+      call_.PerformOps(&write_ops_);
+    }
+
+    void WriteAndFinish(const ResponseType* resp, ::grpc::WriteOptions options,
+                        ::grpc::Status s) override {
+      // This combines the write into the finish callback
+      // Don't send any message if the status is bad
+      if (s.ok()) {
+        // TODO(vjpai): don't assert
+        GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
+      }
+      Finish(std::move(s));
+    }
+
+   private:
+    friend class CallbackServerStreamingHandler<RequestType, ResponseType>;
+
+    ServerCallbackWriterImpl(::grpc_impl::CallbackServerContext* ctx,
+                             ::grpc::internal::Call* call,
+                             const RequestType* req,
+                             std::function<void()> call_requester)
+        : ctx_(ctx),
+          call_(*call),
+          req_(req),
+          call_requester_(std::move(call_requester)) {}
+
+    void SetupReactor(ServerWriteReactor<ResponseType>* reactor) {
+      reactor_.store(reactor, std::memory_order_relaxed);
+      // The callback for this function should not be inlined because it invokes
+      // a user-controlled reaction, but any resulting OnDone can be inlined in
+      // the executor to which this callback is dispatched.
+      write_tag_.Set(call_.call(),
+                     [this, reactor](bool ok) {
+                       reactor->OnWriteDone(ok);
+                       this->MaybeDone(/*inlineable_ondone=*/true);
+                     },
+                     &write_ops_, /*can_inline=*/false);
+      write_ops_.set_core_cq_tag(&write_tag_);
+      this->BindReactor(reactor);
+      this->MaybeCallOnCancel(reactor);
+      // Inlineable OnDone can be false here because there is no write
+      // reactor that has an inlineable OnDone; this only applies to the
+      // DefaultReactor (which is unary).
+      this->MaybeDone(/*inlineable_ondone=*/false);
+    }
+    ~ServerCallbackWriterImpl() { req_->~RequestType(); }
+
+    const RequestType* request() { return req_; }
+
+    void CallOnDone() override {
+      reactor_.load(std::memory_order_relaxed)->OnDone();
+      grpc_call* call = call_.call();
+      auto call_requester = std::move(call_requester_);
+      this->~ServerCallbackWriterImpl();  // explicitly call destructor
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      call_requester();
+    }
+
+    ServerReactor* reactor() override {
+      return reactor_.load(std::memory_order_relaxed);
+    }
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        meta_ops_;
+    ::grpc::internal::CallbackWithSuccessTag meta_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        finish_ops_;
+    ::grpc::internal::CallbackWithSuccessTag finish_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage>
+        write_ops_;
+    ::grpc::internal::CallbackWithSuccessTag write_tag_;
+
+    ::grpc_impl::CallbackServerContext* const ctx_;
+    ::grpc::internal::Call call_;
+    const RequestType* req_;
+    std::function<void()> call_requester_;
+    // The memory ordering of reactor_ follows ServerCallbackUnaryImpl.
+    std::atomic<ServerWriteReactor<ResponseType>*> reactor_;
+    // callbacks_outstanding_ follows a refcount pattern
+    std::atomic<intptr_t> callbacks_outstanding_{
+        3};  // reserve for OnStarted, Finish, and CompletionOp
+  };
+};
+
+template <class RequestType, class ResponseType>
+class CallbackBidiHandler : public ::grpc::internal::MethodHandler {
+ public:
+  explicit CallbackBidiHandler(
+      std::function<ServerBidiReactor<RequestType, ResponseType>*(
+          ::grpc_impl::CallbackServerContext*)>
+          get_reactor)
+      : get_reactor_(std::move(get_reactor)) {}
+  void RunHandler(const HandlerParameter& param) final {
+    ::grpc::g_core_codegen_interface->grpc_call_ref(param.call->call());
+
+    auto* stream = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+        param.call->call(), sizeof(ServerCallbackReaderWriterImpl)))
+        ServerCallbackReaderWriterImpl(
+            static_cast<::grpc_impl::CallbackServerContext*>(
+                param.server_context),
+            param.call, std::move(param.call_requester));
+    // Inlineable OnDone can be false in the CompletionOp callback because there
+    // is no bidi reactor that has an inlineable OnDone; this only applies to
+    // the DefaultReactor (which is unary).
+    param.server_context->BeginCompletionOp(
+        param.call,
+        [stream](bool) { stream->MaybeDone(/*inlineable_ondone=*/false); },
+        stream);
+
+    ServerBidiReactor<RequestType, ResponseType>* reactor = nullptr;
+    if (param.status.ok()) {
+      reactor = ::grpc::internal::CatchingReactorGetter<
+          ServerBidiReactor<RequestType, ResponseType>>(
+          get_reactor_, static_cast<::grpc_impl::CallbackServerContext*>(
+                            param.server_context));
+    }
+
+    if (reactor == nullptr) {
+      // if deserialization or reactor creator failed, we need to fail the call
+      reactor = new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc(
+          param.call->call(),
+          sizeof(UnimplementedBidiReactor<RequestType, ResponseType>)))
+          UnimplementedBidiReactor<RequestType, ResponseType>(
+              ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, ""));
+    }
+
+    stream->SetupReactor(reactor);
+  }
+
+ private:
+  std::function<ServerBidiReactor<RequestType, ResponseType>*(
+      ::grpc_impl::CallbackServerContext*)>
+      get_reactor_;
+
+  class ServerCallbackReaderWriterImpl
+      : public ServerCallbackReaderWriter<RequestType, ResponseType> {
+   public:
+    void Finish(::grpc::Status s) override {
+      // A finish tag with only MaybeDone can have its callback inlined
+      // regardless even if OnDone is not inlineable because this callback just
+      // checks a ref and then decides whether or not to dispatch OnDone.
+      finish_tag_.Set(call_.call(),
+                      [this](bool) {
+                        // Inlineable OnDone can be false here because there is
+                        // no bidi reactor that has an inlineable OnDone; this
+                        // only applies to the DefaultReactor (which is unary).
+                        this->MaybeDone(/*inlineable_ondone=*/false);
+                      },
+                      &finish_ops_, /*can_inline=*/true);
+      finish_ops_.set_core_cq_tag(&finish_tag_);
+
+      if (!ctx_->sent_initial_metadata_) {
+        finish_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                        ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          finish_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
+      call_.PerformOps(&finish_ops_);
+    }
+
+    void SendInitialMetadata() override {
+      GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+      this->Ref();
+      // The callback for this function should not be inlined because it invokes
+      // a user-controlled reaction, but any resulting OnDone can be inlined in
+      // the executor to which this callback is dispatched.
+      meta_tag_.Set(call_.call(),
+                    [this](bool ok) {
+                      ServerBidiReactor<RequestType, ResponseType>* reactor =
+                          reactor_.load(std::memory_order_relaxed);
+                      reactor->OnSendInitialMetadataDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &meta_ops_, /*can_inline=*/false);
+      meta_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                    ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        meta_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+      meta_ops_.set_core_cq_tag(&meta_tag_);
+      call_.PerformOps(&meta_ops_);
+    }
+
+    void Write(const ResponseType* resp,
+               ::grpc::WriteOptions options) override {
+      this->Ref();
+      if (options.is_last_message()) {
+        options.set_buffer_hint();
+      }
+      if (!ctx_->sent_initial_metadata_) {
+        write_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                       ctx_->initial_metadata_flags());
+        if (ctx_->compression_level_set()) {
+          write_ops_.set_compression_level(ctx_->compression_level());
+        }
+        ctx_->sent_initial_metadata_ = true;
+      }
+      // TODO(vjpai): don't assert
+      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
+      call_.PerformOps(&write_ops_);
+    }
+
+    void WriteAndFinish(const ResponseType* resp, ::grpc::WriteOptions options,
+                        ::grpc::Status s) override {
+      // Don't send any message if the status is bad
+      if (s.ok()) {
+        // TODO(vjpai): don't assert
+        GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
+      }
+      Finish(std::move(s));
+    }
+
+    void Read(RequestType* req) override {
+      this->Ref();
+      read_ops_.RecvMessage(req);
+      call_.PerformOps(&read_ops_);
+    }
+
+   private:
+    friend class CallbackBidiHandler<RequestType, ResponseType>;
+
+    ServerCallbackReaderWriterImpl(::grpc_impl::CallbackServerContext* ctx,
+                                   ::grpc::internal::Call* call,
+                                   std::function<void()> call_requester)
+        : ctx_(ctx), call_(*call), call_requester_(std::move(call_requester)) {}
+
+    void SetupReactor(ServerBidiReactor<RequestType, ResponseType>* reactor) {
+      reactor_.store(reactor, std::memory_order_relaxed);
+      // The callbacks for these functions should not be inlined because they
+      // invoke user-controlled reactions, but any resulting OnDones can be
+      // inlined in the executor to which a callback is dispatched.
+      write_tag_.Set(call_.call(),
+                     [this, reactor](bool ok) {
+                       reactor->OnWriteDone(ok);
+                       this->MaybeDone(/*inlineable_ondone=*/true);
+                     },
+                     &write_ops_, /*can_inline=*/false);
+      write_ops_.set_core_cq_tag(&write_tag_);
+      read_tag_.Set(call_.call(),
+                    [this, reactor](bool ok) {
+                      reactor->OnReadDone(ok);
+                      this->MaybeDone(/*inlineable_ondone=*/true);
+                    },
+                    &read_ops_, /*can_inline=*/false);
+      read_ops_.set_core_cq_tag(&read_tag_);
+      this->BindReactor(reactor);
+      this->MaybeCallOnCancel(reactor);
+      // Inlineable OnDone can be false here because there is no bidi
+      // reactor that has an inlineable OnDone; this only applies to the
+      // DefaultReactor (which is unary).
+      this->MaybeDone(/*inlineable_ondone=*/false);
+    }
+
+    void CallOnDone() override {
+      reactor_.load(std::memory_order_relaxed)->OnDone();
+      grpc_call* call = call_.call();
+      auto call_requester = std::move(call_requester_);
+      this->~ServerCallbackReaderWriterImpl();  // explicitly call destructor
+      ::grpc::g_core_codegen_interface->grpc_call_unref(call);
+      call_requester();
+    }
+
+    ServerReactor* reactor() override {
+      return reactor_.load(std::memory_order_relaxed);
+    }
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        meta_ops_;
+    ::grpc::internal::CallbackWithSuccessTag meta_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpServerSendStatus>
+        finish_ops_;
+    ::grpc::internal::CallbackWithSuccessTag finish_tag_;
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage>
+        write_ops_;
+    ::grpc::internal::CallbackWithSuccessTag write_tag_;
+    ::grpc::internal::CallOpSet<
+        ::grpc::internal::CallOpRecvMessage<RequestType>>
+        read_ops_;
+    ::grpc::internal::CallbackWithSuccessTag read_tag_;
+
+    ::grpc_impl::CallbackServerContext* const ctx_;
+    ::grpc::internal::Call call_;
+    std::function<void()> call_requester_;
+    // The memory ordering of reactor_ follows ServerCallbackUnaryImpl.
+    std::atomic<ServerBidiReactor<RequestType, ResponseType>*> reactor_;
+    // callbacks_outstanding_ follows a refcount pattern
+    std::atomic<intptr_t> callbacks_outstanding_{
+        3};  // reserve for OnStarted, Finish, and CompletionOp
+  };
+};
+
+}  // namespace internal
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_HANDLERS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_impl.h
new file mode 100644
index 0000000..aaf83b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_callback_impl.h	
@@ -0,0 +1,780 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_IMPL_H
+
+#include <atomic>
+#include <functional>
+#include <type_traits>
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_op_set.h>
+#include <grpcpp/impl/codegen/callback_common.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/message_allocator.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+// Declare base class of all reactors as internal
+namespace internal {
+
+// Forward declarations
+template <class Request, class Response>
+class CallbackUnaryHandler;
+template <class Request, class Response>
+class CallbackClientStreamingHandler;
+template <class Request, class Response>
+class CallbackServerStreamingHandler;
+template <class Request, class Response>
+class CallbackBidiHandler;
+
+class ServerReactor {
+ public:
+  virtual ~ServerReactor() = default;
+  virtual void OnDone() = 0;
+  virtual void OnCancel() = 0;
+
+  // The following is not API. It is for internal use only and specifies whether
+  // all reactions of this Reactor can be run without an extra executor
+  // scheduling. This should only be used for internally-defined reactors with
+  // trivial reactions.
+  virtual bool InternalInlineable() { return false; }
+
+ private:
+  template <class Request, class Response>
+  friend class CallbackUnaryHandler;
+  template <class Request, class Response>
+  friend class CallbackClientStreamingHandler;
+  template <class Request, class Response>
+  friend class CallbackServerStreamingHandler;
+  template <class Request, class Response>
+  friend class CallbackBidiHandler;
+};
+
+/// The base class of ServerCallbackUnary etc.
+class ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackCall() {}
+
+  // This object is responsible for tracking when it is safe to call OnDone and
+  // OnCancel. OnDone should not be called until the method handler is complete,
+  // Finish has been called, the ServerContext CompletionOp (which tracks
+  // cancellation or successful completion) has completed, and all outstanding
+  // Read/Write actions have seen their reactions. OnCancel should not be called
+  // until after the method handler is done and the RPC has completed with a
+  // cancellation. This is tracked by counting how many of these conditions have
+  // been met and calling OnCancel when none remain unmet.
+
+  // Public versions of MaybeDone: one where we don't know the reactor in
+  // advance (used for the ServerContext CompletionOp), and one for where we
+  // know the inlineability of the OnDone reaction. You should set the inline
+  // flag to true if either the Reactor is InternalInlineable() or if this
+  // callback is already being forced to run dispatched to an executor
+  // (typically because it contains additional work than just the MaybeDone).
+
+  void MaybeDone() {
+    if (GPR_UNLIKELY(Unref() == 1)) {
+      ScheduleOnDone(reactor()->InternalInlineable());
+    }
+  }
+
+  void MaybeDone(bool inline_ondone) {
+    if (GPR_UNLIKELY(Unref() == 1)) {
+      ScheduleOnDone(inline_ondone);
+    }
+  }
+
+  // Fast version called with known reactor passed in, used from derived
+  // classes, typically in non-cancel case
+  void MaybeCallOnCancel(ServerReactor* reactor) {
+    if (GPR_UNLIKELY(UnblockCancellation())) {
+      CallOnCancel(reactor);
+    }
+  }
+
+  // Slower version called from object that doesn't know the reactor a priori
+  // (such as the ServerContext CompletionOp which is formed before the
+  // reactor). This is used in cancel cases only, so it's ok to be slower and
+  // invoke a virtual function.
+  void MaybeCallOnCancel() {
+    if (GPR_UNLIKELY(UnblockCancellation())) {
+      CallOnCancel(reactor());
+    }
+  }
+
+ protected:
+  /// Increases the reference count
+  void Ref() { callbacks_outstanding_.fetch_add(1, std::memory_order_relaxed); }
+
+ private:
+  virtual ServerReactor* reactor() = 0;
+
+  // CallOnDone performs the work required at completion of the RPC: invoking
+  // the OnDone function and doing all necessary cleanup. This function is only
+  // ever invoked on a fully-Unref'fed ServerCallbackCall.
+  virtual void CallOnDone() = 0;
+
+  // If the OnDone reaction is inlineable, execute it inline. Otherwise send it
+  // to an executor.
+  void ScheduleOnDone(bool inline_ondone);
+
+  // If the OnCancel reaction is inlineable, execute it inline. Otherwise send
+  // it to an executor.
+  void CallOnCancel(ServerReactor* reactor);
+
+  // Implement the cancellation constraint counter. Return true if OnCancel
+  // should be called, false otherwise.
+  bool UnblockCancellation() {
+    return on_cancel_conditions_remaining_.fetch_sub(
+               1, std::memory_order_acq_rel) == 1;
+  }
+
+  /// Decreases the reference count and returns the previous value
+  int Unref() {
+    return callbacks_outstanding_.fetch_sub(1, std::memory_order_acq_rel);
+  }
+
+  std::atomic_int on_cancel_conditions_remaining_{2};
+  std::atomic_int callbacks_outstanding_{
+      3};  // reserve for start, Finish, and CompletionOp
+};
+
+template <class Request, class Response>
+class DefaultMessageHolder
+    : public ::grpc::experimental::MessageHolder<Request, Response> {
+ public:
+  DefaultMessageHolder() {
+    this->set_request(&request_obj_);
+    this->set_response(&response_obj_);
+  }
+  void Release() override {
+    // the object is allocated in the call arena.
+    this->~DefaultMessageHolder<Request, Response>();
+  }
+
+ private:
+  Request request_obj_;
+  Response response_obj_;
+};
+
+}  // namespace internal
+
+// Forward declarations
+class ServerUnaryReactor;
+template <class Request>
+class ServerReadReactor;
+template <class Response>
+class ServerWriteReactor;
+template <class Request, class Response>
+class ServerBidiReactor;
+
+// NOTE: The actual call/stream object classes are provided as API only to
+// support mocking. There are no implementations of these class interfaces in
+// the API.
+class ServerCallbackUnary : public internal::ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackUnary() {}
+  virtual void Finish(::grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+
+ protected:
+  // Use a template rather than explicitly specifying ServerUnaryReactor to
+  // delay binding and avoid a circular forward declaration issue
+  template <class Reactor>
+  void BindReactor(Reactor* reactor) {
+    reactor->InternalBindCall(this);
+  }
+};
+
+template <class Request>
+class ServerCallbackReader : public internal::ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackReader() {}
+  virtual void Finish(::grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Read(Request* msg) = 0;
+
+ protected:
+  void BindReactor(ServerReadReactor<Request>* reactor) {
+    reactor->InternalBindReader(this);
+  }
+};
+
+template <class Response>
+class ServerCallbackWriter : public internal::ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackWriter() {}
+
+  virtual void Finish(::grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Write(const Response* msg, ::grpc::WriteOptions options) = 0;
+  virtual void WriteAndFinish(const Response* msg, ::grpc::WriteOptions options,
+                              ::grpc::Status s) = 0;
+
+ protected:
+  void BindReactor(ServerWriteReactor<Response>* reactor) {
+    reactor->InternalBindWriter(this);
+  }
+};
+
+template <class Request, class Response>
+class ServerCallbackReaderWriter : public internal::ServerCallbackCall {
+ public:
+  virtual ~ServerCallbackReaderWriter() {}
+
+  virtual void Finish(::grpc::Status s) = 0;
+  virtual void SendInitialMetadata() = 0;
+  virtual void Read(Request* msg) = 0;
+  virtual void Write(const Response* msg, ::grpc::WriteOptions options) = 0;
+  virtual void WriteAndFinish(const Response* msg, ::grpc::WriteOptions options,
+                              ::grpc::Status s) = 0;
+
+ protected:
+  void BindReactor(ServerBidiReactor<Request, Response>* reactor) {
+    reactor->InternalBindStream(this);
+  }
+};
+
+// The following classes are the reactor interfaces that are to be implemented
+// by the user, returned as the output parameter of the method handler for a
+// callback method. Note that none of the classes are pure; all reactions have a
+// default empty reaction so that the user class only needs to override those
+// classes that it cares about.
+
+/// \a ServerBidiReactor is the interface for a bidirectional streaming RPC.
+template <class Request, class Response>
+class ServerBidiReactor : public internal::ServerReactor {
+ public:
+  // NOTE: Initializing stream_ as a constructor initializer rather than a
+  //       default initializer because gcc-4.x requires a copy constructor for
+  //       default initializing a templated member, which isn't ok for atomic.
+  // TODO(vjpai): Switch to default constructor and default initializer when
+  //              gcc-4.x is no longer supported
+  ServerBidiReactor() : stream_(nullptr) {}
+  ~ServerBidiReactor() = default;
+
+  /// Send any initial metadata stored in the RPC context. If not invoked,
+  /// any initial metadata will be passed along with the first Write or the
+  /// Finish (if there are no writes).
+  void StartSendInitialMetadata() {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    stream->SendInitialMetadata();
+  }
+
+  /// Initiate a read operation.
+  ///
+  /// \param[out] req Where to eventually store the read message. Valid when
+  ///                 the library calls OnReadDone
+  void StartRead(Request* req) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.read_wanted = req;
+        return;
+      }
+    }
+    stream->Read(req);
+  }
+
+  /// Initiate a write operation.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  void StartWrite(const Response* resp) {
+    StartWrite(resp, ::grpc::WriteOptions());
+  }
+
+  /// Initiate a write operation with specified options.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWrite(const Response* resp, ::grpc::WriteOptions options) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = std::move(options);
+        return;
+      }
+    }
+    stream->Write(resp, std::move(options));
+  }
+
+  /// Initiate a write operation with specified options and final RPC Status,
+  /// which also causes any trailing metadata for this RPC to be sent out.
+  /// StartWriteAndFinish is like merging StartWriteLast and Finish into a
+  /// single step. A key difference, though, is that this operation doesn't have
+  /// an OnWriteDone reaction - it is considered complete only when OnDone is
+  /// available. An RPC can either have StartWriteAndFinish or Finish, but not
+  /// both.
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  /// \param[in] s The status outcome of this RPC
+  void StartWriteAndFinish(const Response* resp, ::grpc::WriteOptions options,
+                           ::grpc::Status s) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.write_and_finish_wanted = true;
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = std::move(options);
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    stream->WriteAndFinish(resp, std::move(options), std::move(s));
+  }
+
+  /// Inform system of a planned write operation with specified options, but
+  /// allow the library to schedule the actual write coalesced with the writing
+  /// of trailing metadata (which takes place on a Finish call).
+  ///
+  /// \param[in] resp The message to be written. The library does not take
+  ///                 ownership but the caller must ensure that the message is
+  ///                 not deleted or modified until OnWriteDone is called.
+  /// \param[in] options The WriteOptions to use for writing this message
+  void StartWriteLast(const Response* resp, ::grpc::WriteOptions options) {
+    StartWrite(resp, std::move(options.set_last_message()));
+  }
+
+  /// Indicate that the stream is to be finished and the trailing metadata and
+  /// RPC status are to be sent. Every RPC MUST be finished using either Finish
+  /// or StartWriteAndFinish (but not both), even if the RPC is already
+  /// cancelled.
+  ///
+  /// \param[in] s The status outcome of this RPC
+  void Finish(::grpc::Status s) {
+    ServerCallbackReaderWriter<Request, Response>* stream =
+        stream_.load(std::memory_order_acquire);
+    if (stream == nullptr) {
+      grpc::internal::MutexLock l(&stream_mu_);
+      stream = stream_.load(std::memory_order_relaxed);
+      if (stream == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    stream->Finish(std::move(s));
+  }
+
+  /// Notifies the application that an explicit StartSendInitialMetadata
+  /// operation completed. Not used when the sending of initial metadata
+  /// piggybacks onto the first write.
+  ///
+  /// \param[in] ok Was it successful? If false, no further write-side operation
+  ///               will succeed.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartRead operation completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no further read-side operation
+  ///               will succeed.
+  virtual void OnReadDone(bool /*ok*/) {}
+
+  /// Notifies the application that a StartWrite (or StartWriteLast) operation
+  /// completed.
+  ///
+  /// \param[in] ok Was it successful? If false, no further write-side operation
+  ///               will succeed.
+  virtual void OnWriteDone(bool /*ok*/) {}
+
+  /// Notifies the application that all operations associated with this RPC
+  /// have completed. This is an override (from the internal base class) but
+  /// still abstract, so derived classes MUST override it to be instantiated.
+  void OnDone() override = 0;
+
+  /// Notifies the application that this RPC has been cancelled. This is an
+  /// override (from the internal base class) but not final, so derived classes
+  /// should override it if they want to take action.
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackReaderWriter<Request, Response>;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindStream(
+      ServerCallbackReaderWriter<Request, Response>* stream) {
+    // TODO(vjpai): When stream_or_backlog_ becomes a variant (see below), use
+    // a scoped MutexLock and std::swap stream_or_backlog_ with a variant that
+    // has stream, then std::get<PreBindBacklog> out of that after the lock.
+    // Do likewise with the remaining InternalBind* functions as well.
+    grpc::internal::ReleasableMutexLock l(&stream_mu_);
+    PreBindBacklog ops(std::move(backlog_));
+    stream_.store(stream, std::memory_order_release);
+    l.Unlock();
+
+    if (ops.send_initial_metadata_wanted) {
+      stream->SendInitialMetadata();
+    }
+    if (ops.read_wanted != nullptr) {
+      stream->Read(ops.read_wanted);
+    }
+    if (ops.write_and_finish_wanted) {
+      stream->WriteAndFinish(ops.write_wanted,
+                             std::move(ops.write_options_wanted),
+                             std::move(ops.status_wanted));
+    } else {
+      if (ops.write_wanted != nullptr) {
+        stream->Write(ops.write_wanted, std::move(ops.write_options_wanted));
+      }
+      if (ops.finish_wanted) {
+        stream->Finish(std::move(ops.status_wanted));
+      }
+    }
+  }
+
+  grpc::internal::Mutex stream_mu_;
+  // TODO(vjpai): Make stream_or_backlog_ into a std::variant or absl::variant
+  //              once C++17 or ABSL is supported since stream and backlog are
+  //              mutually exclusive in this class. Do likewise with the
+  //              remaining reactor classes and their backlogs as well.
+  std::atomic<ServerCallbackReaderWriter<Request, Response>*> stream_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool write_and_finish_wanted = false;
+    bool finish_wanted = false;
+    Request* read_wanted = nullptr;
+    const Response* write_wanted = nullptr;
+    ::grpc::WriteOptions write_options_wanted;
+    ::grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ /* GUARDED_BY(stream_mu_) */;
+};
+
+/// \a ServerReadReactor is the interface for a client-streaming RPC.
+template <class Request>
+class ServerReadReactor : public internal::ServerReactor {
+ public:
+  ServerReadReactor() : reader_(nullptr) {}
+  ~ServerReadReactor() = default;
+
+  /// The following operation initiations are exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    reader->SendInitialMetadata();
+  }
+  void StartRead(Request* req) {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.read_wanted = req;
+        return;
+      }
+    }
+    reader->Read(req);
+  }
+  void Finish(::grpc::Status s) {
+    ServerCallbackReader<Request>* reader =
+        reader_.load(std::memory_order_acquire);
+    if (reader == nullptr) {
+      grpc::internal::MutexLock l(&reader_mu_);
+      reader = reader_.load(std::memory_order_relaxed);
+      if (reader == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    reader->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnReadDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackReader<Request>;
+
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindReader(ServerCallbackReader<Request>* reader) {
+    grpc::internal::ReleasableMutexLock l(&reader_mu_);
+    PreBindBacklog ops(std::move(backlog_));
+    reader_.store(reader, std::memory_order_release);
+    l.Unlock();
+
+    if (ops.send_initial_metadata_wanted) {
+      reader->SendInitialMetadata();
+    }
+    if (ops.read_wanted != nullptr) {
+      reader->Read(ops.read_wanted);
+    }
+    if (ops.finish_wanted) {
+      reader->Finish(std::move(ops.status_wanted));
+    }
+  }
+
+  grpc::internal::Mutex reader_mu_;
+  std::atomic<ServerCallbackReader<Request>*> reader_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool finish_wanted = false;
+    Request* read_wanted = nullptr;
+    ::grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ /* GUARDED_BY(reader_mu_) */;
+};
+
+/// \a ServerWriteReactor is the interface for a server-streaming RPC.
+template <class Response>
+class ServerWriteReactor : public internal::ServerReactor {
+ public:
+  ServerWriteReactor() : writer_(nullptr) {}
+  ~ServerWriteReactor() = default;
+
+  /// The following operation initiations are exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    writer->SendInitialMetadata();
+  }
+  void StartWrite(const Response* resp) {
+    StartWrite(resp, ::grpc::WriteOptions());
+  }
+  void StartWrite(const Response* resp, ::grpc::WriteOptions options) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = std::move(options);
+        return;
+      }
+    }
+    writer->Write(resp, std::move(options));
+  }
+  void StartWriteAndFinish(const Response* resp, ::grpc::WriteOptions options,
+                           ::grpc::Status s) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.write_and_finish_wanted = true;
+        backlog_.write_wanted = resp;
+        backlog_.write_options_wanted = std::move(options);
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    writer->WriteAndFinish(resp, std::move(options), std::move(s));
+  }
+  void StartWriteLast(const Response* resp, ::grpc::WriteOptions options) {
+    StartWrite(resp, std::move(options.set_last_message()));
+  }
+  void Finish(::grpc::Status s) {
+    ServerCallbackWriter<Response>* writer =
+        writer_.load(std::memory_order_acquire);
+    if (writer == nullptr) {
+      grpc::internal::MutexLock l(&writer_mu_);
+      writer = writer_.load(std::memory_order_relaxed);
+      if (writer == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    writer->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  virtual void OnWriteDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackWriter<Response>;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindWriter(ServerCallbackWriter<Response>* writer) {
+    grpc::internal::ReleasableMutexLock l(&writer_mu_);
+    PreBindBacklog ops(std::move(backlog_));
+    writer_.store(writer, std::memory_order_release);
+    l.Unlock();
+
+    if (ops.send_initial_metadata_wanted) {
+      writer->SendInitialMetadata();
+    }
+    if (ops.write_and_finish_wanted) {
+      writer->WriteAndFinish(ops.write_wanted,
+                             std::move(ops.write_options_wanted),
+                             std::move(ops.status_wanted));
+    } else {
+      if (ops.write_wanted != nullptr) {
+        writer->Write(ops.write_wanted, std::move(ops.write_options_wanted));
+      }
+      if (ops.finish_wanted) {
+        writer->Finish(std::move(ops.status_wanted));
+      }
+    }
+  }
+
+  grpc::internal::Mutex writer_mu_;
+  std::atomic<ServerCallbackWriter<Response>*> writer_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool write_and_finish_wanted = false;
+    bool finish_wanted = false;
+    const Response* write_wanted = nullptr;
+    ::grpc::WriteOptions write_options_wanted;
+    ::grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ /* GUARDED_BY(writer_mu_) */;
+};
+
+class ServerUnaryReactor : public internal::ServerReactor {
+ public:
+  ServerUnaryReactor() : call_(nullptr) {}
+  ~ServerUnaryReactor() = default;
+
+  /// The following operation initiations are exactly like ServerBidiReactor.
+  void StartSendInitialMetadata() {
+    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
+    if (call == nullptr) {
+      grpc::internal::MutexLock l(&call_mu_);
+      call = call_.load(std::memory_order_relaxed);
+      if (call == nullptr) {
+        backlog_.send_initial_metadata_wanted = true;
+        return;
+      }
+    }
+    call->SendInitialMetadata();
+  }
+  void Finish(::grpc::Status s) {
+    ServerCallbackUnary* call = call_.load(std::memory_order_acquire);
+    if (call == nullptr) {
+      grpc::internal::MutexLock l(&call_mu_);
+      call = call_.load(std::memory_order_relaxed);
+      if (call == nullptr) {
+        backlog_.finish_wanted = true;
+        backlog_.status_wanted = std::move(s);
+        return;
+      }
+    }
+    call->Finish(std::move(s));
+  }
+
+  /// The following notifications are exactly like ServerBidiReactor.
+  virtual void OnSendInitialMetadataDone(bool /*ok*/) {}
+  void OnDone() override = 0;
+  void OnCancel() override {}
+
+ private:
+  friend class ServerCallbackUnary;
+  // May be overridden by internal implementation details. This is not a public
+  // customization point.
+  virtual void InternalBindCall(ServerCallbackUnary* call) {
+    grpc::internal::ReleasableMutexLock l(&call_mu_);
+    PreBindBacklog ops(std::move(backlog_));
+    call_.store(call, std::memory_order_release);
+    l.Unlock();
+
+    if (ops.send_initial_metadata_wanted) {
+      call->SendInitialMetadata();
+    }
+    if (ops.finish_wanted) {
+      call->Finish(std::move(ops.status_wanted));
+    }
+  }
+
+  grpc::internal::Mutex call_mu_;
+  std::atomic<ServerCallbackUnary*> call_{nullptr};
+  struct PreBindBacklog {
+    bool send_initial_metadata_wanted = false;
+    bool finish_wanted = false;
+    ::grpc::Status status_wanted;
+  };
+  PreBindBacklog backlog_ /* GUARDED_BY(call_mu_) */;
+};
+
+namespace internal {
+
+template <class Base>
+class FinishOnlyReactor : public Base {
+ public:
+  explicit FinishOnlyReactor(::grpc::Status s) { this->Finish(std::move(s)); }
+  void OnDone() override { this->~FinishOnlyReactor(); }
+};
+
+using UnimplementedUnaryReactor = FinishOnlyReactor<ServerUnaryReactor>;
+template <class Request>
+using UnimplementedReadReactor = FinishOnlyReactor<ServerReadReactor<Request>>;
+template <class Response>
+using UnimplementedWriteReactor =
+    FinishOnlyReactor<ServerWriteReactor<Response>>;
+template <class Request, class Response>
+using UnimplementedBidiReactor =
+    FinishOnlyReactor<ServerBidiReactor<Request, Response>>;
+
+}  // namespace internal
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CALLBACK_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context.h
new file mode 100644
index 0000000..85b309e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
+
+#include <grpcpp/impl/codegen/server_context_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ServerContext ServerContext;
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+typedef ::grpc_impl::ServerContextBase ServerContextBase;
+typedef ::grpc_impl::CallbackServerContext CallbackServerContext;
+#endif
+
+// TODO(vjpai): Remove namespace experimental when de-experimentalized fully.
+namespace experimental {
+
+typedef ::grpc_impl::ServerContextBase ServerContextBase;
+typedef ::grpc_impl::CallbackServerContext CallbackServerContext;
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context_impl.h
new file mode 100644
index 0000000..ae0ea0e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_context_impl.h	
@@ -0,0 +1,602 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_IMPL_H
+
+#include <atomic>
+#include <cassert>
+#include <map>
+#include <memory>
+#include <type_traits>
+#include <vector>
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_op_set.h>
+#include <grpcpp/impl/codegen/callback_common.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/create_auth_context.h>
+#include <grpcpp/impl/codegen/message_allocator.h>
+#include <grpcpp/impl/codegen/metadata_map.h>
+#include <grpcpp/impl/codegen/security/auth_context.h>
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+#include <grpcpp/impl/codegen/server_interceptor.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+#include <grpcpp/impl/codegen/time.h>
+
+struct grpc_metadata;
+struct grpc_call;
+struct census_context;
+
+namespace grpc_impl {
+class ClientContext;
+class CompletionQueue;
+class Server;
+template <class W, class R>
+class ServerAsyncReader;
+template <class W>
+class ServerAsyncWriter;
+template <class W>
+class ServerAsyncResponseWriter;
+template <class W, class R>
+class ServerAsyncReaderWriter;
+template <class R>
+class ServerReader;
+template <class W>
+class ServerWriter;
+
+namespace internal {
+template <class ServiceType, class RequestType, class ResponseType>
+class BidiStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackUnaryHandler;
+template <class RequestType, class ResponseType>
+class CallbackClientStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackServerStreamingHandler;
+template <class RequestType, class ResponseType>
+class CallbackBidiHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ClientStreamingHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class RpcMethodHandler;
+template <class Base>
+class FinishOnlyReactor;
+template <class W, class R>
+class ServerReaderWriterBody;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+class ServerReactor;
+template <class Streamer, bool WriteNeeded>
+class TemplatedBidiStreamingHandler;
+template <::grpc::StatusCode code>
+class ErrorMethodHandler;
+}  // namespace internal
+
+}  // namespace grpc_impl
+namespace grpc {
+class GenericServerContext;
+class ServerInterface;
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+class GenericCallbackServerContext;
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+namespace internal {
+class Call;
+}  // namespace internal
+
+namespace testing {
+class InteropServerContextInspector;
+class ServerContextTestSpouse;
+class DefaultReactorTestPeer;
+}  // namespace testing
+
+}  // namespace grpc
+
+namespace grpc_impl {
+
+/// Base class of ServerContext. Experimental until callback API is final.
+class ServerContextBase {
+ public:
+  virtual ~ServerContextBase();
+
+  /// Return the deadline for the server call.
+  std::chrono::system_clock::time_point deadline() const {
+    return ::grpc::Timespec2Timepoint(deadline_);
+  }
+
+  /// Return a \a gpr_timespec representation of the server call's deadline.
+  gpr_timespec raw_deadline() const { return deadline_; }
+
+  /// Add the (\a key, \a value) pair to the initial metadata
+  /// associated with a server call. These are made available at the client side
+  /// by the \a grpc::ClientContext::GetServerInitialMetadata() method.
+  ///
+  /// \warning This method should only be called before sending initial metadata
+  /// to the client (which can happen explicitly, or implicitly when sending a
+  /// a response message or status to the client).
+  ///
+  /// \param key The metadata key. If \a value is binary data, it must
+  /// end in "-bin".
+  /// \param value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  void AddInitialMetadata(const grpc::string& key, const grpc::string& value);
+
+  /// Add the (\a key, \a value) pair to the initial metadata
+  /// associated with a server call. These are made available at the client
+  /// side by the \a grpc::ClientContext::GetServerTrailingMetadata() method.
+  ///
+  /// \warning This method should only be called before sending trailing
+  /// metadata to the client (which happens when the call is finished and a
+  /// status is sent to the client).
+  ///
+  /// \param key The metadata key. If \a value is binary data,
+  /// it must end in "-bin".
+  /// \param value The metadata value. If its value is binary, the key name
+  /// must end in "-bin".
+  ///
+  /// Metadata must conform to the following format:
+  /// Custom-Metadata -> Binary-Header / ASCII-Header
+  /// Binary-Header -> {Header-Name "-bin" } {binary value}
+  /// ASCII-Header -> Header-Name ASCII-Value
+  /// Header-Name -> 1*( %x30-39 / %x61-7A / "_" / "-" / ".") ; 0-9 a-z _ - .
+  /// ASCII-Value -> 1*( %x20-%x7E ) ; space and printable ASCII
+  void AddTrailingMetadata(const grpc::string& key, const grpc::string& value);
+
+  /// IsCancelled is always safe to call when using sync or callback API.
+  /// When using async API, it is only safe to call IsCancelled after
+  /// the AsyncNotifyWhenDone tag has been delivered. Thread-safe.
+  bool IsCancelled() const;
+
+  /// Cancel the Call from the server. This is a best-effort API and
+  /// depending on when it is called, the RPC may still appear successful to
+  /// the client.
+  /// For example, if TryCancel() is called on a separate thread, it might race
+  /// with the server handler which might return success to the client before
+  /// TryCancel() was even started by the thread.
+  ///
+  /// It is the caller's responsibility to prevent such races and ensure that if
+  /// TryCancel() is called, the serverhandler must return Status::CANCELLED.
+  /// The only exception is that if the serverhandler is already returning an
+  /// error status code, it is ok to not return Status::CANCELLED even if
+  /// TryCancel() was called.
+  ///
+  /// Note that TryCancel() does not change any of the tags that are pending
+  /// on the completion queue. All pending tags will still be delivered
+  /// (though their ok result may reflect the effect of cancellation).
+  void TryCancel() const;
+
+  /// Return a collection of initial metadata key-value pairs sent from the
+  /// client. Note that keys may happen more than
+  /// once (ie, a \a std::multimap is returned).
+  ///
+  /// It is safe to use this method after initial metadata has been received,
+  /// Calls always begin with the client sending initial metadata, so this is
+  /// safe to access as soon as the call has begun on the server side.
+  ///
+  /// \return A multimap of initial metadata key-value pairs from the server.
+  const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata()
+      const {
+    return *client_metadata_.map();
+  }
+
+  /// Return the compression algorithm to be used by the server call.
+  grpc_compression_level compression_level() const {
+    return compression_level_;
+  }
+
+  /// Set \a level to be the compression level used for the server call.
+  ///
+  /// \param level The compression level used for the server call.
+  void set_compression_level(grpc_compression_level level) {
+    compression_level_set_ = true;
+    compression_level_ = level;
+  }
+
+  /// Return a bool indicating whether the compression level for this call
+  /// has been set (either implicitly or through a previous call to
+  /// \a set_compression_level.
+  bool compression_level_set() const { return compression_level_set_; }
+
+  /// Return the compression algorithm the server call will request be used.
+  /// Note that the gRPC runtime may decide to ignore this request, for example,
+  /// due to resource constraints, or if the server is aware the client doesn't
+  /// support the requested algorithm.
+  grpc_compression_algorithm compression_algorithm() const {
+    return compression_algorithm_;
+  }
+  /// Set \a algorithm to be the compression algorithm used for the server call.
+  ///
+  /// \param algorithm The compression algorithm used for the server call.
+  void set_compression_algorithm(grpc_compression_algorithm algorithm);
+
+  /// Set the serialized load reporting costs in \a cost_data for the call.
+  void SetLoadReportingCosts(const std::vector<grpc::string>& cost_data);
+
+  /// Return the authentication context for this server call.
+  ///
+  /// \see grpc::AuthContext.
+  std::shared_ptr<const ::grpc::AuthContext> auth_context() const {
+    if (auth_context_.get() == nullptr) {
+      auth_context_ = ::grpc::CreateAuthContext(call_);
+    }
+    return auth_context_;
+  }
+
+  /// Return the peer uri in a string.
+  /// WARNING: this value is never authenticated or subject to any security
+  /// related code. It must not be used for any authentication related
+  /// functionality. Instead, use auth_context.
+  grpc::string peer() const;
+
+  /// Get the census context associated with this server call.
+  const struct census_context* census_context() const;
+
+  /// Should be used for framework-level extensions only.
+  /// Applications never need to call this method.
+  grpc_call* c_call() { return call_; }
+
+ protected:
+  /// Async only. Has to be called before the rpc starts.
+  /// Returns the tag in completion queue when the rpc finishes.
+  /// IsCancelled() can then be called to check whether the rpc was cancelled.
+  /// TODO(vjpai): Fix this so that the tag is returned even if the call never
+  /// starts (https://github.com/grpc/grpc/issues/10136).
+  void AsyncNotifyWhenDone(void* tag) {
+    has_notify_when_done_tag_ = true;
+    async_notify_when_done_tag_ = tag;
+  }
+
+  /// NOTE: This is an API for advanced users who need custom allocators.
+  /// Get and maybe mutate the allocator state associated with the current RPC.
+  /// Currently only applicable for callback unary RPC methods.
+  /// WARNING: This is experimental API and could be changed or removed.
+  ::grpc::experimental::RpcAllocatorState* GetRpcAllocatorState() {
+    return message_allocator_state_;
+  }
+
+  /// Get a library-owned default unary reactor for use in minimal reaction
+  /// cases. This supports typical unary RPC usage of providing a response and
+  /// status. It supports immediate Finish (finish from within the method
+  /// handler) or delayed Finish (finish called after the method handler
+  /// invocation). It does not support reacting to cancellation or completion,
+  /// or early sending of initial metadata. Since this is a library-owned
+  /// reactor, it should not be delete'd or freed in any way. This is more
+  /// efficient than creating a user-owned reactor both because of avoiding an
+  /// allocation and because its minimal reactions are optimized using a core
+  /// surface flag that allows their reactions to run inline without any
+  /// thread-hop.
+  ///
+  /// This method should not be called more than once or called after return
+  /// from the method handler.
+  ///
+  /// WARNING: This is experimental API and could be changed or removed.
+  ::grpc_impl::ServerUnaryReactor* DefaultReactor() {
+    // Short-circuit the case where a default reactor was already set up by
+    // the TestPeer.
+    if (test_unary_ != nullptr) {
+      return reinterpret_cast<Reactor*>(&default_reactor_);
+    }
+    new (&default_reactor_) Reactor;
+#ifndef NDEBUG
+    bool old = false;
+    assert(default_reactor_used_.compare_exchange_strong(
+        old, true, std::memory_order_relaxed));
+#else
+    default_reactor_used_.store(true, std::memory_order_relaxed);
+#endif
+    return reinterpret_cast<Reactor*>(&default_reactor_);
+  }
+
+  /// Constructors for use by derived classes
+  ServerContextBase();
+  ServerContextBase(gpr_timespec deadline, grpc_metadata_array* arr);
+
+ private:
+  friend class ::grpc::testing::InteropServerContextInspector;
+  friend class ::grpc::testing::ServerContextTestSpouse;
+  friend class ::grpc::testing::DefaultReactorTestPeer;
+  friend class ::grpc::ServerInterface;
+  friend class ::grpc_impl::Server;
+  template <class W, class R>
+  friend class ::grpc_impl::ServerAsyncReader;
+  template <class W>
+  friend class ::grpc_impl::ServerAsyncWriter;
+  template <class W>
+  friend class ::grpc_impl::ServerAsyncResponseWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::ServerAsyncReaderWriter;
+  template <class R>
+  friend class ::grpc_impl::ServerReader;
+  template <class W>
+  friend class ::grpc_impl::ServerWriter;
+  template <class W, class R>
+  friend class ::grpc_impl::internal::ServerReaderWriterBody;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::RpcMethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ClientStreamingHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ServerStreamingHandler;
+  template <class Streamer, bool WriteNeeded>
+  friend class ::grpc_impl::internal::TemplatedBidiStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackUnaryHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackClientStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackServerStreamingHandler;
+  template <class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::CallbackBidiHandler;
+  template <::grpc::StatusCode code>
+  friend class ::grpc_impl::internal::ErrorMethodHandler;
+  template <class Base>
+  friend class ::grpc_impl::internal::FinishOnlyReactor;
+  friend class ::grpc_impl::ClientContext;
+  friend class ::grpc::GenericServerContext;
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  friend class ::grpc::GenericCallbackServerContext;
+#else
+  friend class ::grpc::experimental::GenericCallbackServerContext;
+#endif
+
+  /// Prevent copying.
+  ServerContextBase(const ServerContextBase&);
+  ServerContextBase& operator=(const ServerContextBase&);
+
+  class CompletionOp;
+
+  void BeginCompletionOp(
+      ::grpc::internal::Call* call, std::function<void(bool)> callback,
+      ::grpc_impl::internal::ServerCallbackCall* callback_controller);
+  /// Return the tag queued by BeginCompletionOp()
+  ::grpc::internal::CompletionQueueTag* GetCompletionOpTag();
+
+  void set_call(grpc_call* call) { call_ = call; }
+
+  void BindDeadlineAndMetadata(gpr_timespec deadline, grpc_metadata_array* arr);
+
+  void Clear();
+
+  void Setup(gpr_timespec deadline);
+
+  uint32_t initial_metadata_flags() const { return 0; }
+
+  ::grpc::experimental::ServerRpcInfo* set_server_rpc_info(
+      const char* method, ::grpc::internal::RpcMethod::RpcType type,
+      const std::vector<std::unique_ptr<
+          ::grpc::experimental::ServerInterceptorFactoryInterface>>& creators) {
+    if (creators.size() != 0) {
+      rpc_info_ = new ::grpc::experimental::ServerRpcInfo(this, method, type);
+      rpc_info_->RegisterInterceptors(creators);
+    }
+    return rpc_info_;
+  }
+
+  void set_message_allocator_state(
+      ::grpc::experimental::RpcAllocatorState* allocator_state) {
+    message_allocator_state_ = allocator_state;
+  }
+
+  CompletionOp* completion_op_;
+  bool has_notify_when_done_tag_;
+  void* async_notify_when_done_tag_;
+  ::grpc::internal::CallbackWithSuccessTag completion_tag_;
+
+  gpr_timespec deadline_;
+  grpc_call* call_;
+  ::grpc_impl::CompletionQueue* cq_;
+  bool sent_initial_metadata_;
+  mutable std::shared_ptr<const ::grpc::AuthContext> auth_context_;
+  mutable ::grpc::internal::MetadataMap client_metadata_;
+  std::multimap<grpc::string, grpc::string> initial_metadata_;
+  std::multimap<grpc::string, grpc::string> trailing_metadata_;
+
+  bool compression_level_set_;
+  grpc_compression_level compression_level_;
+  grpc_compression_algorithm compression_algorithm_;
+
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                              ::grpc::internal::CallOpSendMessage>
+      pending_ops_;
+  bool has_pending_ops_;
+
+  ::grpc::experimental::ServerRpcInfo* rpc_info_;
+  ::grpc::experimental::RpcAllocatorState* message_allocator_state_ = nullptr;
+
+  class Reactor : public ServerUnaryReactor {
+   public:
+    void OnCancel() override {}
+    void OnDone() override {}
+    // Override InternalInlineable for this class since its reactions are
+    // trivial and thus do not need to be run from the executor (triggering a
+    // thread hop). This should only be used by internal reactors (thus the
+    // name) and not by user application code.
+    bool InternalInlineable() override { return true; }
+  };
+
+  void SetupTestDefaultReactor(std::function<void(::grpc::Status)> func) {
+    test_unary_.reset(new TestServerCallbackUnary(this, std::move(func)));
+  }
+  bool test_status_set() const {
+    return (test_unary_ != nullptr) && test_unary_->status_set();
+  }
+  ::grpc::Status test_status() const { return test_unary_->status(); }
+
+  class TestServerCallbackUnary : public ::grpc_impl::ServerCallbackUnary {
+   public:
+    TestServerCallbackUnary(ServerContextBase* ctx,
+                            std::function<void(::grpc::Status)> func)
+        : reactor_(ctx->DefaultReactor()), func_(std::move(func)) {
+      this->BindReactor(reactor_);
+    }
+    void Finish(::grpc::Status s) override {
+      status_ = s;
+      func_(std::move(s));
+      status_set_.store(true, std::memory_order_release);
+    }
+    void SendInitialMetadata() override {}
+
+    bool status_set() const {
+      return status_set_.load(std::memory_order_acquire);
+    }
+    ::grpc::Status status() const { return status_; }
+
+   private:
+    void CallOnDone() override {}
+    ::grpc_impl::internal::ServerReactor* reactor() override {
+      return reactor_;
+    }
+
+    ::grpc_impl::ServerUnaryReactor* const reactor_;
+    std::atomic_bool status_set_{false};
+    ::grpc::Status status_;
+    const std::function<void(::grpc::Status s)> func_;
+  };
+
+  typename std::aligned_storage<sizeof(Reactor), alignof(Reactor)>::type
+      default_reactor_;
+  std::atomic_bool default_reactor_used_{false};
+  std::unique_ptr<TestServerCallbackUnary> test_unary_;
+};
+
+/// A ServerContext or CallbackServerContext allows the code implementing a
+/// service handler to:
+///
+/// - Add custom initial and trailing metadata key-value pairs that will
+///   propagated to the client side.
+/// - Control call settings such as compression and authentication.
+/// - Access metadata coming from the client.
+/// - Get performance metrics (ie, census).
+///
+/// Context settings are only relevant to the call handler they are supplied to,
+/// that is to say, they aren't sticky across multiple calls. Some of these
+/// settings, such as the compression options, can be made persistent at server
+/// construction time by specifying the appropriate \a ChannelArguments
+/// to a \a grpc::ServerBuilder, via \a ServerBuilder::AddChannelArgument.
+///
+/// \warning ServerContext instances should \em not be reused across rpcs.
+class ServerContext : public ServerContextBase {
+ public:
+  ServerContext() {}  // for async calls
+
+  using ServerContextBase::AddInitialMetadata;
+  using ServerContextBase::AddTrailingMetadata;
+  using ServerContextBase::IsCancelled;
+  using ServerContextBase::SetLoadReportingCosts;
+  using ServerContextBase::TryCancel;
+  using ServerContextBase::auth_context;
+  using ServerContextBase::c_call;
+  using ServerContextBase::census_context;
+  using ServerContextBase::client_metadata;
+  using ServerContextBase::compression_algorithm;
+  using ServerContextBase::compression_level;
+  using ServerContextBase::compression_level_set;
+  using ServerContextBase::deadline;
+  using ServerContextBase::peer;
+  using ServerContextBase::raw_deadline;
+  using ServerContextBase::set_compression_algorithm;
+  using ServerContextBase::set_compression_level;
+
+  // Sync/CQ-based Async ServerContext only
+  using ServerContextBase::AsyncNotifyWhenDone;
+
+ private:
+  // Constructor for internal use by server only
+  friend class ::grpc_impl::Server;
+  ServerContext(gpr_timespec deadline, grpc_metadata_array* arr)
+      : ServerContextBase(deadline, arr) {}
+
+  // CallbackServerContext only
+  using ServerContextBase::DefaultReactor;
+  using ServerContextBase::GetRpcAllocatorState;
+
+  /// Prevent copying.
+  ServerContext(const ServerContext&) = delete;
+  ServerContext& operator=(const ServerContext&) = delete;
+};
+
+class CallbackServerContext : public ServerContextBase {
+ public:
+  /// Public constructors are for direct use only by mocking tests. In practice,
+  /// these objects will be owned by the library.
+  CallbackServerContext() {}
+
+  using ServerContextBase::AddInitialMetadata;
+  using ServerContextBase::AddTrailingMetadata;
+  using ServerContextBase::IsCancelled;
+  using ServerContextBase::SetLoadReportingCosts;
+  using ServerContextBase::TryCancel;
+  using ServerContextBase::auth_context;
+  using ServerContextBase::c_call;
+  using ServerContextBase::census_context;
+  using ServerContextBase::client_metadata;
+  using ServerContextBase::compression_algorithm;
+  using ServerContextBase::compression_level;
+  using ServerContextBase::compression_level_set;
+  using ServerContextBase::deadline;
+  using ServerContextBase::peer;
+  using ServerContextBase::raw_deadline;
+  using ServerContextBase::set_compression_algorithm;
+  using ServerContextBase::set_compression_level;
+
+  // CallbackServerContext only
+  using ServerContextBase::DefaultReactor;
+  using ServerContextBase::GetRpcAllocatorState;
+
+ private:
+  // Sync/CQ-based Async ServerContext only
+  using ServerContextBase::AsyncNotifyWhenDone;
+
+  /// Prevent copying.
+  CallbackServerContext(const CallbackServerContext&) = delete;
+  CallbackServerContext& operator=(const CallbackServerContext&) = delete;
+};
+
+}  // namespace grpc_impl
+
+static_assert(std::is_base_of<::grpc_impl::ServerContextBase,
+                              ::grpc_impl::ServerContext>::value,
+              "improper base class");
+static_assert(std::is_base_of<::grpc_impl::ServerContextBase,
+                              ::grpc_impl::CallbackServerContext>::value,
+              "improper base class");
+static_assert(sizeof(::grpc_impl::ServerContextBase) ==
+                  sizeof(::grpc_impl::ServerContext),
+              "wrong size");
+static_assert(sizeof(::grpc_impl::ServerContextBase) ==
+                  sizeof(::grpc_impl::CallbackServerContext),
+              "wrong size");
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_CONTEXT_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interceptor.h
new file mode 100644
index 0000000..cee6869
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interceptor.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
+
+#include <atomic>
+#include <vector>
+
+#include <grpcpp/impl/codegen/interceptor.h>
+#include <grpcpp/impl/codegen/rpc_method.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+
+namespace grpc_impl {
+class ServerContextBase;
+}  // namespace grpc_impl
+
+namespace grpc {
+
+namespace internal {
+class InterceptorBatchMethodsImpl;
+}
+
+namespace experimental {
+class ServerRpcInfo;
+
+// A factory interface for creation of server interceptors. A vector of
+// factories can be provided to ServerBuilder which will be used to create a new
+// vector of server interceptors per RPC. Server interceptor authors should
+// create a subclass of ServerInterceptorFactorInterface which creates objects
+// of their interceptors.
+class ServerInterceptorFactoryInterface {
+ public:
+  virtual ~ServerInterceptorFactoryInterface() {}
+  // Returns a pointer to an Interceptor object on successful creation, nullptr
+  // otherwise. If nullptr is returned, this server interceptor factory is
+  // ignored for the purposes of that RPC.
+  virtual Interceptor* CreateServerInterceptor(ServerRpcInfo* info) = 0;
+};
+
+/// ServerRpcInfo represents the state of a particular RPC as it
+/// appears to an interceptor. It is created and owned by the library and
+/// passed to the CreateServerInterceptor method of the application's
+/// ServerInterceptorFactoryInterface implementation
+class ServerRpcInfo {
+ public:
+  /// Type categorizes RPCs by unary or streaming type
+  enum class Type { UNARY, CLIENT_STREAMING, SERVER_STREAMING, BIDI_STREAMING };
+
+  ~ServerRpcInfo() {}
+
+  // Delete all copy and move constructors and assignments
+  ServerRpcInfo(const ServerRpcInfo&) = delete;
+  ServerRpcInfo& operator=(const ServerRpcInfo&) = delete;
+  ServerRpcInfo(ServerRpcInfo&&) = delete;
+  ServerRpcInfo& operator=(ServerRpcInfo&&) = delete;
+
+  // Getter methods
+
+  /// Return the fully-specified method name
+  const char* method() const { return method_; }
+
+  /// Return the type of the RPC (unary or a streaming flavor)
+  Type type() const { return type_; }
+
+  /// Return a pointer to the underlying ServerContext structure associated
+  /// with the RPC to support features that apply to it
+  grpc_impl::ServerContextBase* server_context() { return ctx_; }
+
+ private:
+  static_assert(Type::UNARY ==
+                    static_cast<Type>(internal::RpcMethod::NORMAL_RPC),
+                "violated expectation about Type enum");
+  static_assert(Type::CLIENT_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::CLIENT_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::SERVER_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::SERVER_STREAMING),
+                "violated expectation about Type enum");
+  static_assert(Type::BIDI_STREAMING ==
+                    static_cast<Type>(internal::RpcMethod::BIDI_STREAMING),
+                "violated expectation about Type enum");
+
+  ServerRpcInfo(grpc_impl::ServerContextBase* ctx, const char* method,
+                internal::RpcMethod::RpcType type)
+      : ctx_(ctx), method_(method), type_(static_cast<Type>(type)) {}
+
+  // Runs interceptor at pos \a pos.
+  void RunInterceptor(
+      experimental::InterceptorBatchMethods* interceptor_methods, size_t pos) {
+    GPR_CODEGEN_ASSERT(pos < interceptors_.size());
+    interceptors_[pos]->Intercept(interceptor_methods);
+  }
+
+  void RegisterInterceptors(
+      const std::vector<
+          std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>&
+          creators) {
+    for (const auto& creator : creators) {
+      auto* interceptor = creator->CreateServerInterceptor(this);
+      if (interceptor != nullptr) {
+        interceptors_.push_back(
+            std::unique_ptr<experimental::Interceptor>(interceptor));
+      }
+    }
+  }
+
+  void Ref() { ref_.fetch_add(1, std::memory_order_relaxed); }
+  void Unref() {
+    if (GPR_UNLIKELY(ref_.fetch_sub(1, std::memory_order_acq_rel) == 1)) {
+      delete this;
+    }
+  }
+
+  grpc_impl::ServerContextBase* ctx_ = nullptr;
+  const char* method_ = nullptr;
+  const Type type_;
+  std::atomic<intptr_t> ref_{1};
+  std::vector<std::unique_ptr<experimental::Interceptor>> interceptors_;
+
+  friend class internal::InterceptorBatchMethodsImpl;
+  friend class grpc_impl::ServerContextBase;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interface.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interface.h
new file mode 100644
index 0000000..80fba7f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/server_interface.h	
@@ -0,0 +1,403 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
+#define GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/call_hook.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/interceptor_common.h>
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+#include <grpcpp/impl/codegen/server_context_impl.h>
+
+namespace grpc_impl {
+
+class Channel;
+class CompletionQueue;
+class ServerCompletionQueue;
+class ServerCredentials;
+}  // namespace grpc_impl
+namespace grpc {
+
+class AsyncGenericService;
+class GenericServerContext;
+class Service;
+
+extern CoreCodegenInterface* g_core_codegen_interface;
+
+/// Models a gRPC server.
+///
+/// Servers are configured and started via \a grpc::ServerBuilder.
+namespace internal {
+class ServerAsyncStreamingInterface;
+}  // namespace internal
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+class CallbackGenericService;
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+
+namespace experimental {
+class ServerInterceptorFactoryInterface;
+}  // namespace experimental
+
+class ServerInterface : public internal::CallHook {
+ public:
+  virtual ~ServerInterface() {}
+
+  /// \a Shutdown does the following things:
+  ///
+  /// 1. Shutdown the server: deactivate all listening ports, mark it in
+  ///    "shutdown mode" so that further call Request's or incoming RPC matches
+  ///    are no longer allowed. Also return all Request'ed-but-not-yet-active
+  ///    calls as failed (!ok). This refers to calls that have been requested
+  ///    at the server by the server-side library or application code but that
+  ///    have not yet been matched to incoming RPCs from the client. Note that
+  ///    this would even include default calls added automatically by the gRPC
+  ///    C++ API without the user's input (e.g., "Unimplemented RPC method")
+  ///
+  /// 2. Block until all rpc method handlers invoked automatically by the sync
+  ///    API finish.
+  ///
+  /// 3. If all pending calls complete (and all their operations are
+  ///    retrieved by Next) before \a deadline expires, this finishes
+  ///    gracefully. Otherwise, forcefully cancel all pending calls associated
+  ///    with the server after \a deadline expires. In the case of the sync API,
+  ///    if the RPC function for a streaming call has already been started and
+  ///    takes a week to complete, the RPC function won't be forcefully
+  ///    terminated (since that would leave state corrupt and incomplete) and
+  ///    the method handler will just keep running (which will prevent the
+  ///    server from completing the "join" operation that it needs to do at
+  ///    shutdown time).
+  ///
+  /// All completion queue associated with the server (for example, for async
+  /// serving) must be shutdown *after* this method has returned:
+  /// See \a ServerBuilder::AddCompletionQueue for details.
+  /// They must also be drained (by repeated Next) after being shutdown.
+  ///
+  /// \param deadline How long to wait until pending rpcs are forcefully
+  /// terminated.
+  template <class T>
+  void Shutdown(const T& deadline) {
+    ShutdownInternal(TimePoint<T>(deadline).raw_time());
+  }
+
+  /// Shutdown the server without a deadline and forced cancellation.
+  ///
+  /// All completion queue associated with the server (for example, for async
+  /// serving) must be shutdown *after* this method has returned:
+  /// See \a ServerBuilder::AddCompletionQueue for details.
+  void Shutdown() {
+    ShutdownInternal(
+        g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_MONOTONIC));
+  }
+
+  /// Block waiting for all work to complete.
+  ///
+  /// \warning The server must be either shutting down or some other thread must
+  /// call \a Shutdown for this function to ever return.
+  virtual void Wait() = 0;
+
+ protected:
+  friend class ::grpc::Service;
+
+  /// Register a service. This call does not take ownership of the service.
+  /// The service must exist for the lifetime of the Server instance.
+  virtual bool RegisterService(const grpc::string* host, Service* service) = 0;
+
+  /// Register a generic service. This call does not take ownership of the
+  /// service. The service must exist for the lifetime of the Server instance.
+  virtual void RegisterAsyncGenericService(AsyncGenericService* service) = 0;
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  /// Register a callback generic service. This call does not take ownership of
+  /// the  service. The service must exist for the lifetime of the Server
+  /// instance. May not be abstract since this is a post-1.0 API addition.
+
+  virtual void RegisterCallbackGenericService(CallbackGenericService*
+                                              /*service*/) {}
+#else
+  /// NOTE: class experimental_registration_interface is not part of the public
+  /// API of this class
+  /// TODO(vjpai): Move these contents to public API when no longer experimental
+  class experimental_registration_interface {
+   public:
+    virtual ~experimental_registration_interface() {}
+    /// May not be abstract since this is a post-1.0 API addition
+    virtual void RegisterCallbackGenericService(
+        experimental::CallbackGenericService* /*service*/) {}
+  };
+
+  /// NOTE: The function experimental_registration() is not stable public API.
+  /// It is a view to the experimental components of this class. It may be
+  /// changed or removed at any time. May not be abstract since this is a
+  /// post-1.0 API addition
+  virtual experimental_registration_interface* experimental_registration() {
+    return nullptr;
+  }
+#endif
+
+  /// Tries to bind \a server to the given \a addr.
+  ///
+  /// It can be invoked multiple times.
+  ///
+  /// \param addr The address to try to bind to the server (eg, localhost:1234,
+  /// 192.168.1.1:31416, [::1]:27182, etc.).
+  /// \params creds The credentials associated with the server.
+  ///
+  /// \return bound port number on success, 0 on failure.
+  ///
+  /// \warning It's an error to call this method on an already started server.
+  virtual int AddListeningPort(const grpc::string& addr,
+                               grpc_impl::ServerCredentials* creds) = 0;
+
+  /// Start the server.
+  ///
+  /// \param cqs Completion queues for handling asynchronous services. The
+  /// caller is required to keep all completion queues live until the server is
+  /// destroyed.
+  /// \param num_cqs How many completion queues does \a cqs hold.
+  virtual void Start(::grpc_impl::ServerCompletionQueue** cqs,
+                     size_t num_cqs) = 0;
+
+  virtual void ShutdownInternal(gpr_timespec deadline) = 0;
+
+  virtual int max_receive_message_size() const = 0;
+
+  virtual grpc_server* server() = 0;
+
+  virtual void PerformOpsOnCall(internal::CallOpSetInterface* ops,
+                                internal::Call* call) = 0;
+
+  class BaseAsyncRequest : public internal::CompletionQueueTag {
+   public:
+    BaseAsyncRequest(ServerInterface* server,
+                     ::grpc_impl::ServerContext* context,
+                     internal::ServerAsyncStreamingInterface* stream,
+                     ::grpc_impl::CompletionQueue* call_cq,
+                     ::grpc_impl::ServerCompletionQueue* notification_cq,
+                     void* tag, bool delete_on_finalize);
+    virtual ~BaseAsyncRequest();
+
+    bool FinalizeResult(void** tag, bool* status) override;
+
+   private:
+    void ContinueFinalizeResultAfterInterception();
+
+   protected:
+    ServerInterface* const server_;
+    ::grpc_impl::ServerContext* const context_;
+    internal::ServerAsyncStreamingInterface* const stream_;
+    ::grpc_impl::CompletionQueue* const call_cq_;
+    ::grpc_impl::ServerCompletionQueue* const notification_cq_;
+    void* const tag_;
+    const bool delete_on_finalize_;
+    grpc_call* call_;
+    internal::Call call_wrapper_;
+    internal::InterceptorBatchMethodsImpl interceptor_methods_;
+    bool done_intercepting_;
+  };
+
+  /// RegisteredAsyncRequest is not part of the C++ API
+  class RegisteredAsyncRequest : public BaseAsyncRequest {
+   public:
+    RegisteredAsyncRequest(ServerInterface* server,
+                           ::grpc_impl::ServerContext* context,
+                           internal::ServerAsyncStreamingInterface* stream,
+                           ::grpc_impl::CompletionQueue* call_cq,
+                           ::grpc_impl::ServerCompletionQueue* notification_cq,
+                           void* tag, const char* name,
+                           internal::RpcMethod::RpcType type);
+
+    virtual bool FinalizeResult(void** tag, bool* status) override {
+      /* If we are done intercepting, then there is nothing more for us to do */
+      if (done_intercepting_) {
+        return BaseAsyncRequest::FinalizeResult(tag, status);
+      }
+      call_wrapper_ = ::grpc::internal::Call(
+          call_, server_, call_cq_, server_->max_receive_message_size(),
+          context_->set_server_rpc_info(name_, type_,
+                                        *server_->interceptor_creators()));
+      return BaseAsyncRequest::FinalizeResult(tag, status);
+    }
+
+   protected:
+    void IssueRequest(void* registered_method, grpc_byte_buffer** payload,
+                      ::grpc_impl::ServerCompletionQueue* notification_cq);
+    const char* name_;
+    const internal::RpcMethod::RpcType type_;
+  };
+
+  class NoPayloadAsyncRequest final : public RegisteredAsyncRequest {
+   public:
+    NoPayloadAsyncRequest(internal::RpcServiceMethod* registered_method,
+                          ServerInterface* server,
+                          ::grpc_impl::ServerContext* context,
+                          internal::ServerAsyncStreamingInterface* stream,
+                          ::grpc_impl::CompletionQueue* call_cq,
+                          ::grpc_impl::ServerCompletionQueue* notification_cq,
+                          void* tag)
+        : RegisteredAsyncRequest(
+              server, context, stream, call_cq, notification_cq, tag,
+              registered_method->name(), registered_method->method_type()) {
+      IssueRequest(registered_method->server_tag(), nullptr, notification_cq);
+    }
+
+    // uses RegisteredAsyncRequest::FinalizeResult
+  };
+
+  template <class Message>
+  class PayloadAsyncRequest final : public RegisteredAsyncRequest {
+   public:
+    PayloadAsyncRequest(internal::RpcServiceMethod* registered_method,
+                        ServerInterface* server,
+                        ::grpc_impl::ServerContext* context,
+                        internal::ServerAsyncStreamingInterface* stream,
+                        ::grpc_impl::CompletionQueue* call_cq,
+                        ::grpc_impl::ServerCompletionQueue* notification_cq,
+                        void* tag, Message* request)
+        : RegisteredAsyncRequest(
+              server, context, stream, call_cq, notification_cq, tag,
+              registered_method->name(), registered_method->method_type()),
+          registered_method_(registered_method),
+          request_(request) {
+      IssueRequest(registered_method->server_tag(), payload_.bbuf_ptr(),
+                   notification_cq);
+    }
+
+    ~PayloadAsyncRequest() {
+      payload_.Release();  // We do not own the payload_
+    }
+
+    bool FinalizeResult(void** tag, bool* status) override {
+      /* If we are done intercepting, then there is nothing more for us to do */
+      if (done_intercepting_) {
+        return RegisteredAsyncRequest::FinalizeResult(tag, status);
+      }
+      if (*status) {
+        if (!payload_.Valid() || !SerializationTraits<Message>::Deserialize(
+                                      payload_.bbuf_ptr(), request_)
+                                      .ok()) {
+          // If deserialization fails, we cancel the call and instantiate
+          // a new instance of ourselves to request another call.  We then
+          // return false, which prevents the call from being returned to
+          // the application.
+          g_core_codegen_interface->grpc_call_cancel_with_status(
+              call_, GRPC_STATUS_INTERNAL, "Unable to parse request", nullptr);
+          g_core_codegen_interface->grpc_call_unref(call_);
+          new PayloadAsyncRequest(registered_method_, server_, context_,
+                                  stream_, call_cq_, notification_cq_, tag_,
+                                  request_);
+          delete this;
+          return false;
+        }
+      }
+      /* Set interception point for recv message */
+      interceptor_methods_.AddInterceptionHookPoint(
+          experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
+      interceptor_methods_.SetRecvMessage(request_, nullptr);
+      return RegisteredAsyncRequest::FinalizeResult(tag, status);
+    }
+
+   private:
+    internal::RpcServiceMethod* const registered_method_;
+    Message* const request_;
+    ByteBuffer payload_;
+  };
+
+  class GenericAsyncRequest : public BaseAsyncRequest {
+   public:
+    GenericAsyncRequest(ServerInterface* server, GenericServerContext* context,
+                        internal::ServerAsyncStreamingInterface* stream,
+                        ::grpc_impl::CompletionQueue* call_cq,
+                        ::grpc_impl::ServerCompletionQueue* notification_cq,
+                        void* tag, bool delete_on_finalize);
+
+    bool FinalizeResult(void** tag, bool* status) override;
+
+   private:
+    grpc_call_details call_details_;
+  };
+
+  template <class Message>
+  void RequestAsyncCall(internal::RpcServiceMethod* method,
+                        ::grpc_impl::ServerContext* context,
+                        internal::ServerAsyncStreamingInterface* stream,
+                        ::grpc_impl::CompletionQueue* call_cq,
+                        ::grpc_impl::ServerCompletionQueue* notification_cq,
+                        void* tag, Message* message) {
+    GPR_CODEGEN_ASSERT(method);
+    new PayloadAsyncRequest<Message>(method, this, context, stream, call_cq,
+                                     notification_cq, tag, message);
+  }
+
+  void RequestAsyncCall(internal::RpcServiceMethod* method,
+                        ::grpc_impl::ServerContext* context,
+                        internal::ServerAsyncStreamingInterface* stream,
+                        ::grpc_impl::CompletionQueue* call_cq,
+                        ::grpc_impl::ServerCompletionQueue* notification_cq,
+                        void* tag) {
+    GPR_CODEGEN_ASSERT(method);
+    new NoPayloadAsyncRequest(method, this, context, stream, call_cq,
+                              notification_cq, tag);
+  }
+
+  void RequestAsyncGenericCall(
+      GenericServerContext* context,
+      internal::ServerAsyncStreamingInterface* stream,
+      ::grpc_impl::CompletionQueue* call_cq,
+      ::grpc_impl::ServerCompletionQueue* notification_cq, void* tag) {
+    new GenericAsyncRequest(this, context, stream, call_cq, notification_cq,
+                            tag, true);
+  }
+
+ private:
+  // EXPERIMENTAL
+  // Getter method for the vector of interceptor factory objects.
+  // Returns a nullptr (rather than being pure) since this is a post-1.0 method
+  // and adding a new pure method to an interface would be a breaking change
+  // (even though this is private and non-API)
+  virtual std::vector<
+      std::unique_ptr<experimental::ServerInterceptorFactoryInterface>>*
+  interceptor_creators() {
+    return nullptr;
+  }
+
+  // EXPERIMENTAL
+  // A method to get the callbackable completion queue associated with this
+  // server. If the return value is nullptr, this server doesn't support
+  // callback operations.
+  // TODO(vjpai): Consider a better default like using a global CQ
+  // Returns nullptr (rather than being pure) since this is a post-1.0 method
+  // and adding a new pure method to an interface would be a breaking change
+  // (even though this is private and non-API)
+  virtual ::grpc_impl::CompletionQueue* CallbackCQ() { return nullptr; }
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVER_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/service_type.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/service_type.h
new file mode 100644
index 0000000..34f97b6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/service_type.h	
@@ -0,0 +1,279 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
+#define GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
+
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+#include <grpcpp/impl/codegen/serialization_traits.h>
+#include <grpcpp/impl/codegen/server_interface.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+class Server;
+class CompletionQueue;
+class ServerContext;
+}  // namespace grpc_impl
+namespace grpc {
+
+class ServerInterface;
+
+namespace internal {
+class Call;
+class ServerAsyncStreamingInterface {
+ public:
+  virtual ~ServerAsyncStreamingInterface() {}
+
+  /// Request notification of the sending of initial metadata to the client.
+  /// Completion will be notified by \a tag on the associated completion
+  /// queue. This call is optional, but if it is used, it cannot be used
+  /// concurrently with or after the \a Finish method.
+  ///
+  /// \param[in] tag Tag identifying this request.
+  virtual void SendInitialMetadata(void* tag) = 0;
+
+ private:
+  friend class ::grpc::ServerInterface;
+  virtual void BindCall(Call* call) = 0;
+};
+}  // namespace internal
+
+/// Desriptor of an RPC service and its various RPC methods
+class Service {
+ public:
+  Service() : server_(nullptr) {}
+  virtual ~Service() {}
+
+  bool has_async_methods() const {
+    for (const auto& method : methods_) {
+      if (method && method->handler() == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_synchronous_methods() const {
+    for (const auto& method : methods_) {
+      if (method &&
+          method->api_type() == internal::RpcServiceMethod::ApiType::SYNC) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_callback_methods() const {
+    for (const auto& method : methods_) {
+      if (method && (method->api_type() ==
+                         internal::RpcServiceMethod::ApiType::CALL_BACK ||
+                     method->api_type() ==
+                         internal::RpcServiceMethod::ApiType::RAW_CALL_BACK)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  bool has_generic_methods() const {
+    for (const auto& method : methods_) {
+      if (method.get() == nullptr) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+ protected:
+  // TODO(vjpai): Promote experimental contents once callback API is accepted
+  class experimental_type {
+   public:
+    explicit experimental_type(Service* service) : service_(service) {}
+
+    void MarkMethodCallback(int index, internal::MethodHandler* handler) {
+      service_->MarkMethodCallbackInternal(index, handler);
+    }
+
+    void MarkMethodRawCallback(int index, internal::MethodHandler* handler) {
+      service_->MarkMethodRawCallbackInternal(index, handler);
+    }
+
+    internal::MethodHandler* GetHandler(int index) {
+      return service_->GetHandlerInternal(index);
+    }
+
+   private:
+    Service* service_;
+  };
+
+  experimental_type experimental() { return experimental_type(this); }
+
+  template <class Message>
+  void RequestAsyncUnary(int index, ::grpc_impl::ServerContext* context,
+                         Message* request,
+                         internal::ServerAsyncStreamingInterface* stream,
+                         ::grpc_impl::CompletionQueue* call_cq,
+                         ::grpc_impl::ServerCompletionQueue* notification_cq,
+                         void* tag) {
+    // Typecast the index to size_t for indexing into a vector
+    // while preserving the API that existed before a compiler
+    // warning was first seen (grpc/grpc#11664)
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncClientStreaming(
+      int index, ::grpc_impl::ServerContext* context,
+      internal::ServerAsyncStreamingInterface* stream,
+      ::grpc_impl::CompletionQueue* call_cq,
+      ::grpc_impl::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+  template <class Message>
+  void RequestAsyncServerStreaming(
+      int index, ::grpc_impl::ServerContext* context, Message* request,
+      internal::ServerAsyncStreamingInterface* stream,
+      ::grpc_impl::CompletionQueue* call_cq,
+      ::grpc_impl::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag, request);
+  }
+  void RequestAsyncBidiStreaming(
+      int index, ::grpc_impl::ServerContext* context,
+      internal::ServerAsyncStreamingInterface* stream,
+      ::grpc_impl::CompletionQueue* call_cq,
+      ::grpc_impl::ServerCompletionQueue* notification_cq, void* tag) {
+    size_t idx = static_cast<size_t>(index);
+    server_->RequestAsyncCall(methods_[idx].get(), context, stream, call_cq,
+                              notification_cq, tag);
+  }
+
+  void AddMethod(internal::RpcServiceMethod* method) {
+    methods_.emplace_back(method);
+  }
+
+  void MarkMethodAsync(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(
+        methods_[idx].get() != nullptr &&
+        "Cannot mark the method as 'async' because it has already been "
+        "marked as 'generic'.");
+    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::ASYNC);
+  }
+
+  void MarkMethodRaw(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(methods_[idx].get() != nullptr &&
+                       "Cannot mark the method as 'raw' because it has already "
+                       "been marked as 'generic'.");
+    methods_[idx]->SetServerApiType(internal::RpcServiceMethod::ApiType::RAW);
+  }
+
+  void MarkMethodGeneric(int index) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(
+        methods_[idx]->handler() != nullptr &&
+        "Cannot mark the method as 'generic' because it has already been "
+        "marked as 'async' or 'raw'.");
+    methods_[idx].reset();
+  }
+
+  void MarkMethodStreamed(int index, internal::MethodHandler* streamed_method) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(methods_[idx] && methods_[idx]->handler() &&
+                       "Cannot mark an async or generic method Streamed");
+    methods_[idx]->SetHandler(streamed_method);
+
+    // From the server's point of view, streamed unary is a special
+    // case of BIDI_STREAMING that has 1 read and 1 write, in that order,
+    // and split server-side streaming is BIDI_STREAMING with 1 read and
+    // any number of writes, in that order.
+    methods_[idx]->SetMethodType(internal::RpcMethod::BIDI_STREAMING);
+  }
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  void MarkMethodCallback(int index, internal::MethodHandler* handler) {
+    MarkMethodCallbackInternal(index, handler);
+  }
+
+  void MarkMethodRawCallback(int index, internal::MethodHandler* handler) {
+    MarkMethodRawCallbackInternal(index, handler);
+  }
+
+  internal::MethodHandler* GetHandler(int index) {
+    return GetHandlerInternal(index);
+  }
+#endif
+ private:
+  // TODO(vjpai): migrate the Internal functions to mainline functions once
+  //              callback API is fully de-experimental
+  void MarkMethodCallbackInternal(int index, internal::MethodHandler* handler) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(
+        methods_[idx].get() != nullptr &&
+        "Cannot mark the method as 'callback' because it has already been "
+        "marked as 'generic'.");
+    methods_[idx]->SetHandler(handler);
+    methods_[idx]->SetServerApiType(
+        internal::RpcServiceMethod::ApiType::CALL_BACK);
+  }
+
+  void MarkMethodRawCallbackInternal(int index,
+                                     internal::MethodHandler* handler) {
+    // This does not have to be a hard error, however no one has approached us
+    // with a use case yet. Please file an issue if you believe you have one.
+    size_t idx = static_cast<size_t>(index);
+    GPR_CODEGEN_ASSERT(
+        methods_[idx].get() != nullptr &&
+        "Cannot mark the method as 'raw callback' because it has already "
+        "been marked as 'generic'.");
+    methods_[idx]->SetHandler(handler);
+    methods_[idx]->SetServerApiType(
+        internal::RpcServiceMethod::ApiType::RAW_CALL_BACK);
+  }
+
+  internal::MethodHandler* GetHandlerInternal(int index) {
+    size_t idx = static_cast<size_t>(index);
+    return methods_[idx]->handler();
+  }
+
+  friend class grpc_impl::Server;
+  friend class ServerInterface;
+  ServerInterface* server_;
+  std::vector<std::unique_ptr<internal::RpcServiceMethod>> methods_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SERVICE_TYPE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/slice.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/slice.h
new file mode 100644
index 0000000..8966559
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/slice.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SLICE_H
+#define GRPCPP_IMPL_CODEGEN_SLICE_H
+
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/string_ref.h>
+
+#include <grpc/impl/codegen/slice.h>
+
+namespace grpc {
+
+/// A wrapper around \a grpc_slice.
+///
+/// A slice represents a contiguous reference counted array of bytes.
+/// It is cheap to take references to a slice, and it is cheap to create a
+/// slice pointing to a subset of another slice.
+class Slice final {
+ public:
+  /// Construct an empty slice.
+  Slice() : slice_(g_core_codegen_interface->grpc_empty_slice()) {}
+  /// Destructor - drops one reference.
+  ~Slice() { g_core_codegen_interface->grpc_slice_unref(slice_); }
+
+  enum AddRef { ADD_REF };
+  /// Construct a slice from \a slice, adding a reference.
+  Slice(grpc_slice slice, AddRef)
+      : slice_(g_core_codegen_interface->grpc_slice_ref(slice)) {}
+
+  enum StealRef { STEAL_REF };
+  /// Construct a slice from \a slice, stealing a reference.
+  Slice(grpc_slice slice, StealRef) : slice_(slice) {}
+
+  /// Allocate a slice of specified size
+  Slice(size_t len)
+      : slice_(g_core_codegen_interface->grpc_slice_malloc(len)) {}
+
+  /// Construct a slice from a copied buffer
+  Slice(const void* buf, size_t len)
+      : slice_(g_core_codegen_interface->grpc_slice_from_copied_buffer(
+            reinterpret_cast<const char*>(buf), len)) {}
+
+  /// Construct a slice from a copied string
+  Slice(const grpc::string& str)
+      : slice_(g_core_codegen_interface->grpc_slice_from_copied_buffer(
+            str.c_str(), str.length())) {}
+
+  enum StaticSlice { STATIC_SLICE };
+
+  /// Construct a slice from a static buffer
+  Slice(const void* buf, size_t len, StaticSlice)
+      : slice_(g_core_codegen_interface->grpc_slice_from_static_buffer(
+            reinterpret_cast<const char*>(buf), len)) {}
+
+  /// Copy constructor, adds a reference.
+  Slice(const Slice& other)
+      : slice_(g_core_codegen_interface->grpc_slice_ref(other.slice_)) {}
+
+  /// Assignment, reference count is unchanged.
+  Slice& operator=(Slice other) {
+    std::swap(slice_, other.slice_);
+    return *this;
+  }
+
+  /// Create a slice pointing at some data. Calls malloc to allocate a refcount
+  /// for the object, and arranges that destroy will be called with the
+  /// user data pointer passed in at destruction. Can be the same as buf or
+  /// different (e.g., if data is part of a larger structure that must be
+  /// destroyed when the data is no longer needed)
+  Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data)
+      : slice_(g_core_codegen_interface->grpc_slice_new_with_user_data(
+            buf, len, destroy, user_data)) {}
+
+  /// Specialization of above for common case where buf == user_data
+  Slice(void* buf, size_t len, void (*destroy)(void*))
+      : Slice(buf, len, destroy, buf) {}
+
+  /// Similar to the above but has a destroy that also takes slice length
+  Slice(void* buf, size_t len, void (*destroy)(void*, size_t))
+      : slice_(g_core_codegen_interface->grpc_slice_new_with_len(buf, len,
+                                                                 destroy)) {}
+
+  /// Byte size.
+  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
+
+  /// Raw pointer to the beginning (first element) of the slice.
+  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
+
+  /// Raw pointer to the end (one byte \em past the last element) of the slice.
+  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
+
+  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
+  grpc_slice c_slice() const {
+    return g_core_codegen_interface->grpc_slice_ref(slice_);
+  }
+
+ private:
+  friend class ByteBuffer;
+
+  grpc_slice slice_;
+};
+
+inline grpc::string_ref StringRefFromSlice(const grpc_slice* slice) {
+  return grpc::string_ref(
+      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(*slice)),
+      GRPC_SLICE_LENGTH(*slice));
+}
+
+inline grpc::string StringFromCopiedSlice(grpc_slice slice) {
+  return grpc::string(reinterpret_cast<char*>(GRPC_SLICE_START_PTR(slice)),
+                      GRPC_SLICE_LENGTH(slice));
+}
+
+inline grpc_slice SliceReferencingString(const grpc::string& str) {
+  return g_core_codegen_interface->grpc_slice_from_static_buffer(str.data(),
+                                                                 str.length());
+}
+
+inline grpc_slice SliceFromCopiedString(const grpc::string& str) {
+  return g_core_codegen_interface->grpc_slice_from_copied_buffer(str.data(),
+                                                                 str.length());
+}
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SLICE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status.h
new file mode 100644
index 0000000..e625a76
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status.h	
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_STATUS_H
+#define GRPCPP_IMPL_CODEGEN_STATUS_H
+
+#include <grpc/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/status_code_enum.h>
+
+namespace grpc {
+
+/// Did it work? If it didn't, why?
+///
+/// See \a grpc::StatusCode for details on the available code and their meaning.
+class Status {
+ public:
+  /// Construct an OK instance.
+  Status() : code_(StatusCode::OK) {
+    // Static assertions to make sure that the C++ API value correctly
+    // maps to the core surface API value
+    static_assert(StatusCode::OK == static_cast<StatusCode>(GRPC_STATUS_OK),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::CANCELLED == static_cast<StatusCode>(GRPC_STATUS_CANCELLED),
+        "Mismatched status code");
+    static_assert(
+        StatusCode::UNKNOWN == static_cast<StatusCode>(GRPC_STATUS_UNKNOWN),
+        "Mismatched status code");
+    static_assert(StatusCode::INVALID_ARGUMENT ==
+                      static_cast<StatusCode>(GRPC_STATUS_INVALID_ARGUMENT),
+                  "Mismatched status code");
+    static_assert(StatusCode::DEADLINE_EXCEEDED ==
+                      static_cast<StatusCode>(GRPC_STATUS_DEADLINE_EXCEEDED),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::NOT_FOUND == static_cast<StatusCode>(GRPC_STATUS_NOT_FOUND),
+        "Mismatched status code");
+    static_assert(StatusCode::ALREADY_EXISTS ==
+                      static_cast<StatusCode>(GRPC_STATUS_ALREADY_EXISTS),
+                  "Mismatched status code");
+    static_assert(StatusCode::PERMISSION_DENIED ==
+                      static_cast<StatusCode>(GRPC_STATUS_PERMISSION_DENIED),
+                  "Mismatched status code");
+    static_assert(StatusCode::UNAUTHENTICATED ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNAUTHENTICATED),
+                  "Mismatched status code");
+    static_assert(StatusCode::RESOURCE_EXHAUSTED ==
+                      static_cast<StatusCode>(GRPC_STATUS_RESOURCE_EXHAUSTED),
+                  "Mismatched status code");
+    static_assert(StatusCode::FAILED_PRECONDITION ==
+                      static_cast<StatusCode>(GRPC_STATUS_FAILED_PRECONDITION),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::ABORTED == static_cast<StatusCode>(GRPC_STATUS_ABORTED),
+        "Mismatched status code");
+    static_assert(StatusCode::OUT_OF_RANGE ==
+                      static_cast<StatusCode>(GRPC_STATUS_OUT_OF_RANGE),
+                  "Mismatched status code");
+    static_assert(StatusCode::UNIMPLEMENTED ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNIMPLEMENTED),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::INTERNAL == static_cast<StatusCode>(GRPC_STATUS_INTERNAL),
+        "Mismatched status code");
+    static_assert(StatusCode::UNAVAILABLE ==
+                      static_cast<StatusCode>(GRPC_STATUS_UNAVAILABLE),
+                  "Mismatched status code");
+    static_assert(
+        StatusCode::DATA_LOSS == static_cast<StatusCode>(GRPC_STATUS_DATA_LOSS),
+        "Mismatched status code");
+  }
+
+  /// Construct an instance with associated \a code and \a error_message.
+  /// It is an error to construct an OK status with non-empty \a error_message.
+  Status(StatusCode code, const grpc::string& error_message)
+      : code_(code), error_message_(error_message) {}
+
+  /// Construct an instance with \a code,  \a error_message and
+  /// \a error_details. It is an error to construct an OK status with non-empty
+  /// \a error_message and/or \a error_details.
+  Status(StatusCode code, const grpc::string& error_message,
+         const grpc::string& error_details)
+      : code_(code),
+        error_message_(error_message),
+        binary_error_details_(error_details) {}
+
+  // Pre-defined special status objects.
+  /// An OK pre-defined instance.
+  static const Status& OK;
+  /// A CANCELLED pre-defined instance.
+  static const Status& CANCELLED;
+
+  /// Return the instance's error code.
+  StatusCode error_code() const { return code_; }
+  /// Return the instance's error message.
+  grpc::string error_message() const { return error_message_; }
+  /// Return the (binary) error details.
+  // Usually it contains a serialized google.rpc.Status proto.
+  grpc::string error_details() const { return binary_error_details_; }
+
+  /// Is the status OK?
+  bool ok() const { return code_ == StatusCode::OK; }
+
+  // Ignores any errors. This method does nothing except potentially suppress
+  // complaints from any tools that are checking that errors are not dropped on
+  // the floor.
+  void IgnoreError() const {}
+
+ private:
+  StatusCode code_;
+  grpc::string error_message_;
+  grpc::string binary_error_details_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_STATUS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status_code_enum.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status_code_enum.h
new file mode 100644
index 0000000..bdd7ead
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/status_code_enum.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
+#define GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
+
+namespace grpc {
+
+enum StatusCode {
+  /// Not an error; returned on success.
+  OK = 0,
+
+  /// The operation was cancelled (typically by the caller).
+  CANCELLED = 1,
+
+  /// Unknown error. An example of where this error may be returned is if a
+  /// Status value received from another address space belongs to an error-space
+  /// that is not known in this address space. Also errors raised by APIs that
+  /// do not return enough error information may be converted to this error.
+  UNKNOWN = 2,
+
+  /// Client specified an invalid argument. Note that this differs from
+  /// FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are
+  /// problematic regardless of the state of the system (e.g., a malformed file
+  /// name).
+  INVALID_ARGUMENT = 3,
+
+  /// Deadline expired before operation could complete. For operations that
+  /// change the state of the system, this error may be returned even if the
+  /// operation has completed successfully. For example, a successful response
+  /// from a server could have been delayed long enough for the deadline to
+  /// expire.
+  DEADLINE_EXCEEDED = 4,
+
+  /// Some requested entity (e.g., file or directory) was not found.
+  NOT_FOUND = 5,
+
+  /// Some entity that we attempted to create (e.g., file or directory) already
+  /// exists.
+  ALREADY_EXISTS = 6,
+
+  /// The caller does not have permission to execute the specified operation.
+  /// PERMISSION_DENIED must not be used for rejections caused by exhausting
+  /// some resource (use RESOURCE_EXHAUSTED instead for those errors).
+  /// PERMISSION_DENIED must not be used if the caller can not be identified
+  /// (use UNAUTHENTICATED instead for those errors).
+  PERMISSION_DENIED = 7,
+
+  /// The request does not have valid authentication credentials for the
+  /// operation.
+  UNAUTHENTICATED = 16,
+
+  /// Some resource has been exhausted, perhaps a per-user quota, or perhaps the
+  /// entire file system is out of space.
+  RESOURCE_EXHAUSTED = 8,
+
+  /// Operation was rejected because the system is not in a state required for
+  /// the operation's execution. For example, directory to be deleted may be
+  /// non-empty, an rmdir operation is applied to a non-directory, etc.
+  ///
+  /// A litmus test that may help a service implementor in deciding
+  /// between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
+  ///  (a) Use UNAVAILABLE if the client can retry just the failing call.
+  ///  (b) Use ABORTED if the client should retry at a higher-level
+  ///      (e.g., restarting a read-modify-write sequence).
+  ///  (c) Use FAILED_PRECONDITION if the client should not retry until
+  ///      the system state has been explicitly fixed. E.g., if an "rmdir"
+  ///      fails because the directory is non-empty, FAILED_PRECONDITION
+  ///      should be returned since the client should not retry unless
+  ///      they have first fixed up the directory by deleting files from it.
+  ///  (d) Use FAILED_PRECONDITION if the client performs conditional
+  ///      REST Get/Update/Delete on a resource and the resource on the
+  ///      server does not match the condition. E.g., conflicting
+  ///      read-modify-write on the same resource.
+  FAILED_PRECONDITION = 9,
+
+  /// The operation was aborted, typically due to a concurrency issue like
+  /// sequencer check failures, transaction aborts, etc.
+  ///
+  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
+  /// and UNAVAILABLE.
+  ABORTED = 10,
+
+  /// Operation was attempted past the valid range. E.g., seeking or reading
+  /// past end of file.
+  ///
+  /// Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed
+  /// if the system state changes. For example, a 32-bit file system will
+  /// generate INVALID_ARGUMENT if asked to read at an offset that is not in the
+  /// range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from
+  /// an offset past the current file size.
+  ///
+  /// There is a fair bit of overlap between FAILED_PRECONDITION and
+  /// OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)
+  /// when it applies so that callers who are iterating through a space can
+  /// easily look for an OUT_OF_RANGE error to detect when they are done.
+  OUT_OF_RANGE = 11,
+
+  /// Operation is not implemented or not supported/enabled in this service.
+  UNIMPLEMENTED = 12,
+
+  /// Internal errors. Means some invariants expected by underlying System has
+  /// been broken. If you see one of these errors, Something is very broken.
+  INTERNAL = 13,
+
+  /// The service is currently unavailable. This is a most likely a transient
+  /// condition and may be corrected by retrying with a backoff. Note that it is
+  /// not always safe to retry non-idempotent operations.
+  ///
+  /// \warning Although data MIGHT not have been transmitted when this
+  /// status occurs, there is NOT A GUARANTEE that the server has not seen
+  /// anything. So in general it is unsafe to retry on this status code
+  /// if the call is non-idempotent.
+  ///
+  /// See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,
+  /// and UNAVAILABLE.
+  UNAVAILABLE = 14,
+
+  /// Unrecoverable data loss or corruption.
+  DATA_LOSS = 15,
+
+  /// Force users to include a default branch:
+  DO_NOT_USE = -1
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_STATUS_CODE_ENUM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/string_ref.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/string_ref.h
new file mode 100644
index 0000000..5d55fc4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/string_ref.h	
@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_STRING_REF_H
+#define GRPCPP_IMPL_CODEGEN_STRING_REF_H
+
+#include <string.h>
+
+#include <algorithm>
+#include <iosfwd>
+#include <iostream>
+#include <iterator>
+
+#include <grpcpp/impl/codegen/config.h>
+
+namespace grpc {
+
+/// This class is a non owning reference to a string.
+///
+/// It should be a strict subset of the upcoming std::string_ref.
+///
+/// \see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+///
+/// The constexpr is dropped or replaced with const for legacy compiler
+/// compatibility.
+class string_ref {
+ public:
+  /// types
+  typedef const char* const_iterator;
+  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+  /// constants
+  const static size_t npos;
+
+  /// construct/copy.
+  string_ref() : data_(nullptr), length_(0) {}
+  string_ref(const string_ref& other)
+      : data_(other.data_), length_(other.length_) {}
+  string_ref& operator=(const string_ref& rhs) {
+    data_ = rhs.data_;
+    length_ = rhs.length_;
+    return *this;
+  }
+
+  string_ref(const char* s) : data_(s), length_(strlen(s)) {}
+  string_ref(const char* s, size_t l) : data_(s), length_(l) {}
+  string_ref(const grpc::string& s) : data_(s.data()), length_(s.length()) {}
+
+  /// iterators
+  const_iterator begin() const { return data_; }
+  const_iterator end() const { return data_ + length_; }
+  const_iterator cbegin() const { return data_; }
+  const_iterator cend() const { return data_ + length_; }
+  const_reverse_iterator rbegin() const {
+    return const_reverse_iterator(end());
+  }
+  const_reverse_iterator rend() const {
+    return const_reverse_iterator(begin());
+  }
+  const_reverse_iterator crbegin() const {
+    return const_reverse_iterator(end());
+  }
+  const_reverse_iterator crend() const {
+    return const_reverse_iterator(begin());
+  }
+
+  /// capacity
+  size_t size() const { return length_; }
+  size_t length() const { return length_; }
+  size_t max_size() const { return length_; }
+  bool empty() const { return length_ == 0; }
+
+  /// element access
+  const char* data() const { return data_; }
+
+  /// string operations
+  int compare(string_ref x) const {
+    size_t min_size = length_ < x.length_ ? length_ : x.length_;
+    int r = memcmp(data_, x.data_, min_size);
+    if (r < 0) return -1;
+    if (r > 0) return 1;
+    if (length_ < x.length_) return -1;
+    if (length_ > x.length_) return 1;
+    return 0;
+  }
+
+  bool starts_with(string_ref x) const {
+    return length_ >= x.length_ && (memcmp(data_, x.data_, x.length_) == 0);
+  }
+
+  bool ends_with(string_ref x) const {
+    return length_ >= x.length_ &&
+           (memcmp(data_ + (length_ - x.length_), x.data_, x.length_) == 0);
+  }
+
+  size_t find(string_ref s) const {
+    auto it = std::search(cbegin(), cend(), s.cbegin(), s.cend());
+    return it == cend() ? npos : std::distance(cbegin(), it);
+  }
+
+  size_t find(char c) const {
+    auto it = std::find(cbegin(), cend(), c);
+    return it == cend() ? npos : std::distance(cbegin(), it);
+  }
+
+  string_ref substr(size_t pos, size_t n = npos) const {
+    if (pos > length_) pos = length_;
+    if (n > (length_ - pos)) n = length_ - pos;
+    return string_ref(data_ + pos, n);
+  }
+
+ private:
+  const char* data_;
+  size_t length_;
+};
+
+/// Comparison operators
+inline bool operator==(string_ref x, string_ref y) { return x.compare(y) == 0; }
+inline bool operator!=(string_ref x, string_ref y) { return x.compare(y) != 0; }
+inline bool operator<(string_ref x, string_ref y) { return x.compare(y) < 0; }
+inline bool operator<=(string_ref x, string_ref y) { return x.compare(y) <= 0; }
+inline bool operator>(string_ref x, string_ref y) { return x.compare(y) > 0; }
+inline bool operator>=(string_ref x, string_ref y) { return x.compare(y) >= 0; }
+
+inline std::ostream& operator<<(std::ostream& out, const string_ref& string) {
+  return out << grpc::string(string.begin(), string.end());
+}
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_STRING_REF_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/stub_options.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/stub_options.h
new file mode 100644
index 0000000..a56695a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/stub_options.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
+#define GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
+
+namespace grpc {
+
+/// Useful interface for generated stubs
+class StubOptions {};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_STUB_OPTIONS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync.h
new file mode 100644
index 0000000..146f182
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync.h	
@@ -0,0 +1,151 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SYNC_H
+#define GRPCPP_IMPL_CODEGEN_SYNC_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef GPR_HAS_PTHREAD_H
+#include <pthread.h>
+#endif
+
+#include <mutex>
+
+#include <grpc/impl/codegen/log.h>
+#include <grpc/impl/codegen/sync.h>
+
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+
+// The core library is not accessible in C++ codegen headers, and vice versa.
+// Thus, we need to have duplicate headers with similar functionality.
+// Make sure any change to this file is also reflected in
+// src/core/lib/gprpp/sync.h too.
+//
+// Whenever possible, prefer "src/core/lib/gprpp/sync.h" over this file,
+// since in core we do not rely on g_core_codegen_interface and hence do not
+// pay the costs of virtual function calls.
+
+namespace grpc {
+namespace internal {
+
+class Mutex {
+ public:
+  Mutex() { g_core_codegen_interface->gpr_mu_init(&mu_); }
+  ~Mutex() { g_core_codegen_interface->gpr_mu_destroy(&mu_); }
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+
+  gpr_mu* get() { return &mu_; }
+  const gpr_mu* get() const { return &mu_; }
+
+ private:
+  union {
+    gpr_mu mu_;
+    std::mutex do_not_use_sth_;
+#ifdef GPR_HAS_PTHREAD_H
+    pthread_mutex_t do_not_use_pth_;
+#endif
+  };
+};
+
+// MutexLock is a std::
+class MutexLock {
+ public:
+  explicit MutexLock(Mutex* mu) : mu_(mu->get()) {
+    g_core_codegen_interface->gpr_mu_lock(mu_);
+  }
+  explicit MutexLock(gpr_mu* mu) : mu_(mu) {
+    g_core_codegen_interface->gpr_mu_lock(mu_);
+  }
+  ~MutexLock() { g_core_codegen_interface->gpr_mu_unlock(mu_); }
+
+  MutexLock(const MutexLock&) = delete;
+  MutexLock& operator=(const MutexLock&) = delete;
+
+ private:
+  gpr_mu* const mu_;
+};
+
+class ReleasableMutexLock {
+ public:
+  explicit ReleasableMutexLock(Mutex* mu) : mu_(mu->get()) {
+    g_core_codegen_interface->gpr_mu_lock(mu_);
+  }
+  explicit ReleasableMutexLock(gpr_mu* mu) : mu_(mu) {
+    g_core_codegen_interface->gpr_mu_lock(mu_);
+  }
+  ~ReleasableMutexLock() {
+    if (!released_) g_core_codegen_interface->gpr_mu_unlock(mu_);
+  }
+
+  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
+
+  void Lock() {
+    GPR_DEBUG_ASSERT(released_);
+    g_core_codegen_interface->gpr_mu_lock(mu_);
+    released_ = false;
+  }
+
+  void Unlock() {
+    GPR_DEBUG_ASSERT(!released_);
+    released_ = true;
+    g_core_codegen_interface->gpr_mu_unlock(mu_);
+  }
+
+ private:
+  gpr_mu* const mu_;
+  bool released_ = false;
+};
+
+class CondVar {
+ public:
+  CondVar() { g_core_codegen_interface->gpr_cv_init(&cv_); }
+  ~CondVar() { g_core_codegen_interface->gpr_cv_destroy(&cv_); }
+
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+
+  void Signal() { g_core_codegen_interface->gpr_cv_signal(&cv_); }
+  void Broadcast() { g_core_codegen_interface->gpr_cv_broadcast(&cv_); }
+
+  int Wait(Mutex* mu) {
+    return Wait(mu,
+                g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+  int Wait(Mutex* mu, const gpr_timespec& deadline) {
+    return g_core_codegen_interface->gpr_cv_wait(&cv_, mu->get(), deadline);
+  }
+
+  template <typename Predicate>
+  void WaitUntil(Mutex* mu, Predicate pred) {
+    while (!pred()) {
+      Wait(mu, g_core_codegen_interface->gpr_inf_future(GPR_CLOCK_REALTIME));
+    }
+  }
+
+ private:
+  gpr_cv cv_;
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SYNC_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream.h
new file mode 100644
index 0000000..852fe66
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream.h	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
+#define GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
+
+#include <grpcpp/impl/codegen/sync_stream_impl.h>
+
+namespace grpc {
+
+namespace internal {
+
+typedef ::grpc_impl::internal::ClientStreamingInterface
+    ClientStreamingInterface;
+
+typedef ::grpc_impl::internal::ServerStreamingInterface
+    ServerStreamingInterface;
+
+template <class R>
+using ReaderInterface = ::grpc_impl::internal::ReaderInterface<R>;
+
+template <class W>
+using WriterInterface = ::grpc_impl::internal::WriterInterface<W>;
+
+template <class R>
+using ClientReaderFactory = ::grpc_impl::internal::ClientReaderFactory<R>;
+
+template <class W>
+using ClientWriterFactory = ::grpc_impl::internal::ClientWriterFactory<W>;
+
+template <class W, class R>
+using ClientReaderWriterFactory =
+    ::grpc_impl::internal::ClientReaderWriterFactory<W, R>;
+
+}  // namespace internal
+
+template <class R>
+using ClientReaderInterface = ::grpc_impl::ClientReaderInterface<R>;
+
+template <class R>
+using ClientReader = ::grpc_impl::ClientReader<R>;
+
+template <class W>
+using ClientWriterInterface = ::grpc_impl::ClientWriterInterface<W>;
+
+template <class W>
+using ClientWriter = ::grpc_impl::ClientWriter<W>;
+
+template <class W, class R>
+using ClientReaderWriterInterface =
+    ::grpc_impl::ClientReaderWriterInterface<W, R>;
+
+template <class W, class R>
+using ClientReaderWriter = ::grpc_impl::ClientReaderWriter<W, R>;
+
+template <class R>
+using ServerReaderInterface = ::grpc_impl::ServerReaderInterface<R>;
+
+template <class R>
+using ServerReader = ::grpc_impl::ServerReader<R>;
+
+template <class W>
+using ServerWriterInterface = ::grpc_impl::ServerWriterInterface<W>;
+
+template <class W>
+using ServerWriter = ::grpc_impl::ServerWriter<W>;
+
+template <class W, class R>
+using ServerReaderWriterInterface =
+    ::grpc_impl::ServerReaderWriterInterface<W, R>;
+
+template <class W, class R>
+using ServerReaderWriter = ::grpc_impl::ServerReaderWriter<W, R>;
+
+template <class RequestType, class ResponseType>
+using ServerUnaryStreamer =
+    ::grpc_impl::ServerUnaryStreamer<RequestType, ResponseType>;
+
+template <class RequestType, class ResponseType>
+using ServerSplitStreamer =
+    ::grpc_impl::ServerSplitStreamer<RequestType, ResponseType>;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_SYNC_STREAM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream_impl.h
new file mode 100644
index 0000000..80b0bd7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/sync_stream_impl.h	
@@ -0,0 +1,948 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H
+#define GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H
+
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/client_context_impl.h>
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/server_context_impl.h>
+#include <grpcpp/impl/codegen/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc_impl {
+
+namespace internal {
+/// Common interface for all synchronous client side streaming.
+class ClientStreamingInterface {
+ public:
+  virtual ~ClientStreamingInterface() {}
+
+  /// Block waiting until the stream finishes and a final status of the call is
+  /// available.
+  ///
+  /// It is appropriate to call this method exactly once when both:
+  ///   * the calling code (client-side) has no more message to send
+  ///     (this can be declared implicitly by calling this method, or
+  ///     explicitly through an earlier call to <i>WritesDone</i> method of the
+  ///     class in use, e.g. \a ClientWriterInterface::WritesDone or
+  ///     \a ClientReaderWriterInterface::WritesDone).
+  ///   * there are no more messages to be received from the server (which can
+  ///     be known implicitly, or explicitly from an earlier call to \a
+  ///     ReaderInterface::Read that returned "false").
+  ///
+  /// This function will return either:
+  /// - when all incoming messages have been read and the server has
+  ///   returned status.
+  /// - when the server has returned a non-OK status.
+  /// - OR when the call failed for some reason and the library generated a
+  ///   status.
+  ///
+  /// Return values:
+  ///   - \a Status contains the status code, message and details for the call
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible trailing metadata sent from the server.
+  virtual ::grpc::Status Finish() = 0;
+};
+
+/// Common interface for all synchronous server side streaming.
+class ServerStreamingInterface {
+ public:
+  virtual ~ServerStreamingInterface() {}
+
+  /// Block to send initial metadata to client.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a Finish method.
+  ///
+  /// The initial metadata that will be sent to the client will be
+  /// taken from the \a ServerContext associated with the call.
+  virtual void SendInitialMetadata() = 0;
+};
+
+/// An interface that yields a sequence of messages of type \a R.
+template <class R>
+class ReaderInterface {
+ public:
+  virtual ~ReaderInterface() {}
+
+  /// Get an upper bound on the next message size available for reading on this
+  /// stream.
+  virtual bool NextMessageSize(uint32_t* sz) = 0;
+
+  /// Block to read a message and parse to \a msg. Returns \a true on success.
+  /// This is thread-safe with respect to \a Write or \WritesDone methods on
+  /// the same stream. It should not be called concurrently with another \a
+  /// Read on the same stream as the order of delivery will not be defined.
+  ///
+  /// \param[out] msg The read message.
+  ///
+  /// \return \a false when there will be no more incoming messages, either
+  /// because the other side has called \a WritesDone() or the stream has failed
+  /// (or been cancelled).
+  virtual bool Read(R* msg) = 0;
+};
+
+/// An interface that can be fed a sequence of messages of type \a W.
+template <class W>
+class WriterInterface {
+ public:
+  virtual ~WriterInterface() {}
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  virtual bool Write(const W& msg, ::grpc::WriteOptions options) = 0;
+
+  /// Block to write \a msg to the stream with default write options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  inline bool Write(const W& msg) { return Write(msg, ::grpc::WriteOptions()); }
+
+  /// Write \a msg and coalesce it with the writing of trailing metadata, using
+  /// WriteOptions \a options.
+  ///
+  /// For client, WriteLast is equivalent of performing Write and WritesDone in
+  /// a single step. \a msg and trailing metadata are coalesced and sent on wire
+  /// by calling this function. For server, WriteLast buffers the \a msg.
+  /// The writing of \a msg is held until the service handler returns,
+  /// where \a msg and trailing metadata are coalesced and sent on wire.
+  /// Note that WriteLast can only buffer \a msg up to the flow control window
+  /// size. If \a msg size is larger than the window size, it will be sent on
+  /// wire without buffering.
+  ///
+  /// \param[in] msg The message to be written to the stream.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  void WriteLast(const W& msg, ::grpc::WriteOptions options) {
+    Write(msg, options.set_last_message());
+  }
+};
+
+}  // namespace internal
+
+/// Client-side interface for streaming reads of message of type \a R.
+template <class R>
+class ClientReaderInterface : public internal::ClientStreamingInterface,
+                              public internal::ReaderInterface<R> {
+ public:
+  /// Block to wait for initial metadata from server. The received metadata
+  /// can only be accessed after this call returns. Should only be called before
+  /// the first read. Calling this method is optional, and if it is not called
+  /// the metadata will be available in ClientContext after the first read.
+  virtual void WaitForInitialMetadata() = 0;
+};
+
+namespace internal {
+template <class R>
+class ClientReaderFactory {
+ public:
+  template <class W>
+  static ClientReader<R>* Create(::grpc::ChannelInterface* channel,
+                                 const ::grpc::internal::RpcMethod& method,
+                                 ::grpc_impl::ClientContext* context,
+                                 const W& request) {
+    return new ClientReader<R>(channel, method, context, request);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for doing server-streaming RPCs,
+/// where the stream of messages coming from the server has messages
+/// of type \a R.
+template <class R>
+class ClientReader final : public ClientReaderInterface<R> {
+ public:
+  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
+  /// semantics.
+  ///
+  //  Side effect:
+  ///   Once complete, the initial metadata read from
+  ///   the server will be accessible through the \a ClientContext used to
+  ///   construct this object.
+  void WaitForInitialMetadata() override {
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+        ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  /// status ignored
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_.max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  /// See the \a ReaderInterface.Read method for semantics.
+  /// Side effect:
+  ///   This also receives initial metadata from the server, if not
+  ///   already received (if initial metadata is received, it can be then
+  ///   accessed through the \a ClientContext associated with this call).
+  bool Read(R* msg) override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                                ::grpc::internal::CallOpRecvMessage<R>>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    ops.RecvMessage(msg);
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops) && ops.got_message;
+  }
+
+  /// See the \a ClientStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   The \a ClientContext associated with this call is updated with
+  ///   possible metadata received from the server.
+  ::grpc::Status Finish() override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpClientRecvStatus> ops;
+    ::grpc::Status status;
+    ops.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&ops);
+    GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientReaderFactory<R>;
+  ::grpc_impl::ClientContext* context_;
+  ::grpc_impl::CompletionQueue cq_;
+  ::grpc::internal::Call call_;
+
+  /// Block to create a stream and write the initial metadata and \a request
+  /// out. Note that \a context will be used to fill in custom initial
+  /// metadata used to send to the server when starting the call.
+  template <class W>
+  ClientReader(::grpc::ChannelInterface* channel,
+               const ::grpc::internal::RpcMethod& method,
+               ::grpc_impl::ClientContext* context, const W& request)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpClientSendClose>
+        ops;
+    ops.SendInitialMetadata(&context->send_initial_metadata_,
+                            context->initial_metadata_flags());
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(ops.SendMessagePtr(&request).ok());
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);
+  }
+};
+
+/// Client-side interface for streaming writes of message type \a W.
+template <class W>
+class ClientWriterInterface : public internal::ClientStreamingInterface,
+                              public internal::WriterInterface<W> {
+ public:
+  /// Half close writing from the client. (signal that the stream of messages
+  /// coming from the client is complete).
+  /// Blocks until currently-pending writes are completed.
+  /// Thread safe with respect to \a ReaderInterface::Read operations only
+  ///
+  /// \return Whether the writes were successful.
+  virtual bool WritesDone() = 0;
+};
+
+namespace internal {
+template <class W>
+class ClientWriterFactory {
+ public:
+  template <class R>
+  static ClientWriter<W>* Create(::grpc::ChannelInterface* channel,
+                                 const ::grpc::internal::RpcMethod& method,
+                                 ::grpc_impl::ClientContext* context,
+                                 R* response) {
+    return new ClientWriter<W>(channel, method, context, response);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for doing client-streaming RPCs,
+/// where the outgoing message stream coming from the client has messages of
+/// type \a W.
+template <class W>
+class ClientWriter : public ClientWriterInterface<W> {
+ public:
+  /// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
+  /// semantics.
+  ///
+  //  Side effect:
+  ///   Once complete, the initial metadata read from the server will be
+  ///   accessible through the \a ClientContext used to construct this object.
+  void WaitForInitialMetadata() {
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+        ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  // status ignored
+  }
+
+  /// See the WriterInterface.Write(const W& msg, WriteOptions options) method
+  /// for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, ::grpc::WriteOptions options) override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(&context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  bool WritesDone() override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpClientSendClose> ops;
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  /// See the ClientStreamingInterface.Finish method for semantics.
+  /// Side effects:
+  ///   - Also receives initial metadata if not already received.
+  ///   - Attempts to fill in the \a response parameter passed
+  ///     to the constructor of this instance with the response
+  ///     message from the server.
+  ::grpc::Status Finish() override {
+    ::grpc::Status status;
+    if (!context_->initial_metadata_received_) {
+      finish_ops_.RecvInitialMetadata(context_);
+    }
+    finish_ops_.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&finish_ops_);
+    GPR_CODEGEN_ASSERT(cq_.Pluck(&finish_ops_));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientWriterFactory<W>;
+
+  /// Block to create a stream (i.e. send request headers and other initial
+  /// metadata to the server). Note that \a context will be used to fill
+  /// in custom initial metadata. \a response will be filled in with the
+  /// single expected response message from the server upon a successful
+  /// call to the \a Finish method of this instance.
+  template <class R>
+  ClientWriter(::grpc::ChannelInterface* channel,
+               const ::grpc::internal::RpcMethod& method,
+               ::grpc_impl::ClientContext* context, R* response)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    finish_ops_.RecvMessage(response);
+    finish_ops_.AllowNoMessage();
+
+    if (!context_->initial_metadata_corked_) {
+      ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+          ops;
+      ops.SendInitialMetadata(&context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
+  }
+
+  ::grpc_impl::ClientContext* context_;
+  ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                              ::grpc::internal::CallOpGenericRecvMessage,
+                              ::grpc::internal::CallOpClientRecvStatus>
+      finish_ops_;
+  ::grpc_impl::CompletionQueue cq_;
+  ::grpc::internal::Call call_;
+};
+
+/// Client-side interface for bi-directional streaming with
+/// client-to-server stream messages of type \a W and
+/// server-to-client stream messages of type \a R.
+template <class W, class R>
+class ClientReaderWriterInterface : public internal::ClientStreamingInterface,
+                                    public internal::WriterInterface<W>,
+                                    public internal::ReaderInterface<R> {
+ public:
+  /// Block to wait for initial metadata from server. The received metadata
+  /// can only be accessed after this call returns. Should only be called before
+  /// the first read. Calling this method is optional, and if it is not called
+  /// the metadata will be available in ClientContext after the first read.
+  virtual void WaitForInitialMetadata() = 0;
+
+  /// Half close writing from the client. (signal that the stream of messages
+  /// coming from the clinet is complete).
+  /// Blocks until currently-pending writes are completed.
+  /// Thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \return Whether the writes were successful.
+  virtual bool WritesDone() = 0;
+};
+
+namespace internal {
+template <class W, class R>
+class ClientReaderWriterFactory {
+ public:
+  static ClientReaderWriter<W, R>* Create(
+      ::grpc::ChannelInterface* channel,
+      const ::grpc::internal::RpcMethod& method,
+      ::grpc_impl::ClientContext* context) {
+    return new ClientReaderWriter<W, R>(channel, method, context);
+  }
+};
+}  // namespace internal
+
+/// Synchronous (blocking) client-side API for bi-directional streaming RPCs,
+/// where the outgoing message stream coming from the client has messages of
+/// type \a W, and the incoming messages stream coming from the server has
+/// messages of type \a R.
+template <class W, class R>
+class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
+ public:
+  /// Block waiting to read initial metadata from the server.
+  /// This call is optional, but if it is used, it cannot be used concurrently
+  /// with or after the \a Finish method.
+  ///
+  /// Once complete, the initial metadata read from the server will be
+  /// accessible through the \a ClientContext used to construct this object.
+  void WaitForInitialMetadata() override {
+    GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata>
+        ops;
+    ops.RecvInitialMetadata(context_);
+    call_.PerformOps(&ops);
+    cq_.Pluck(&ops);  // status ignored
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_.max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  /// See the \a ReaderInterface.Read method for semantics.
+  /// Side effect:
+  ///   Also receives initial metadata if not already received (updates the \a
+  ///   ClientContext associated with this call in that case).
+  bool Read(R* msg) override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                                ::grpc::internal::CallOpRecvMessage<R>>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    ops.RecvMessage(msg);
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops) && ops.got_message;
+  }
+
+  /// See the \a WriterInterface.Write method for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call to fill in values).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, ::grpc::WriteOptions options) override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata,
+                                ::grpc::internal::CallOpSendMessage,
+                                ::grpc::internal::CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(&context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  bool WritesDone() override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpClientSendClose> ops;
+    ops.ClientSendClose();
+    call_.PerformOps(&ops);
+    return cq_.Pluck(&ops);
+  }
+
+  /// See the ClientStreamingInterface.Finish method for semantics.
+  ///
+  /// Side effect:
+  ///   - the \a ClientContext associated with this call is updated with
+  ///     possible trailing metadata sent from the server.
+  ::grpc::Status Finish() override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata,
+                                ::grpc::internal::CallOpClientRecvStatus>
+        ops;
+    if (!context_->initial_metadata_received_) {
+      ops.RecvInitialMetadata(context_);
+    }
+    ::grpc::Status status;
+    ops.ClientRecvStatus(context_, &status);
+    call_.PerformOps(&ops);
+    GPR_CODEGEN_ASSERT(cq_.Pluck(&ops));
+    return status;
+  }
+
+ private:
+  friend class internal::ClientReaderWriterFactory<W, R>;
+
+  ::grpc_impl::ClientContext* context_;
+  ::grpc_impl::CompletionQueue cq_;
+  ::grpc::internal::Call call_;
+
+  /// Block to create a stream and write the initial metadata and \a request
+  /// out. Note that \a context will be used to fill in custom initial metadata
+  /// used to send to the server when starting the call.
+  ClientReaderWriter(::grpc::ChannelInterface* channel,
+                     const ::grpc::internal::RpcMethod& method,
+                     ::grpc_impl::ClientContext* context)
+      : context_(context),
+        cq_(grpc_completion_queue_attributes{
+            GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING,
+            nullptr}),  // Pluckable cq
+        call_(channel->CreateCall(method, context, &cq_)) {
+    if (!context_->initial_metadata_corked_) {
+      ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+          ops;
+      ops.SendInitialMetadata(&context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
+  }
+};
+
+/// Server-side interface for streaming reads of message of type \a R.
+template <class R>
+class ServerReaderInterface : public internal::ServerStreamingInterface,
+                              public internal::ReaderInterface<R> {};
+
+/// Synchronous (blocking) server-side API for doing client-streaming RPCs,
+/// where the incoming message stream coming from the client has messages of
+/// type \a R.
+template <class R>
+class ServerReader final : public ServerReaderInterface<R> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics. Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    int result = call_->max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  bool Read(R* msg) override {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> ops;
+    ops.RecvMessage(msg);
+    call_->PerformOps(&ops);
+    return call_->cq()->Pluck(&ops) && ops.got_message;
+  }
+
+ private:
+  ::grpc::internal::Call* const call_;
+  ServerContext* const ctx_;
+
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ClientStreamingHandler;
+
+  ServerReader(::grpc::internal::Call* call, ::grpc_impl::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+};
+
+/// Server-side interface for streaming writes of message of type \a W.
+template <class W>
+class ServerWriterInterface : public internal::ServerStreamingInterface,
+                              public internal::WriterInterface<W> {};
+
+/// Synchronous (blocking) server-side API for doing for doing a
+/// server-streaming RPCs, where the outgoing message stream coming from the
+/// server has messages of type \a W.
+template <class W>
+class ServerWriter final : public ServerWriterInterface<W> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics.
+  /// Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata>
+        ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  /// See the \a WriterInterface.Write method for semantics.
+  ///
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the
+  ///   \a ClientContext associated with this call to fill in values).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, ::grpc::WriteOptions options) override {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+    if (!ctx_->sent_initial_metadata_) {
+      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                             ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    call_->PerformOps(&ctx_->pending_ops_);
+    // if this is the last message we defer the pluck until AFTER we start
+    // the trailing md op. This prevents hangs. See
+    // https://github.com/grpc/grpc/issues/11546
+    if (options.is_last_message()) {
+      ctx_->has_pending_ops_ = true;
+      return true;
+    }
+    ctx_->has_pending_ops_ = false;
+    return call_->cq()->Pluck(&ctx_->pending_ops_);
+  }
+
+ private:
+  ::grpc::internal::Call* const call_;
+  ::grpc_impl::ServerContext* const ctx_;
+
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ::grpc_impl::internal::ServerStreamingHandler;
+
+  ServerWriter(::grpc::internal::Call* call, ::grpc_impl::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+};
+
+/// Server-side interface for bi-directional streaming.
+template <class W, class R>
+class ServerReaderWriterInterface : public internal::ServerStreamingInterface,
+                                    public internal::WriterInterface<W>,
+                                    public internal::ReaderInterface<R> {};
+
+/// Actual implementation of bi-directional streaming
+namespace internal {
+template <class W, class R>
+class ServerReaderWriterBody final {
+ public:
+  ServerReaderWriterBody(grpc::internal::Call* call,
+                         ::grpc_impl::ServerContext* ctx)
+      : call_(call), ctx_(ctx) {}
+
+  void SendInitialMetadata() {
+    GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_);
+
+    grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops;
+    ops.SendInitialMetadata(&ctx_->initial_metadata_,
+                            ctx_->initial_metadata_flags());
+    if (ctx_->compression_level_set()) {
+      ops.set_compression_level(ctx_->compression_level());
+    }
+    ctx_->sent_initial_metadata_ = true;
+    call_->PerformOps(&ops);
+    call_->cq()->Pluck(&ops);
+  }
+
+  bool NextMessageSize(uint32_t* sz) {
+    int result = call_->max_receive_message_size();
+    *sz = (result > 0) ? result : UINT32_MAX;
+    return true;
+  }
+
+  bool Read(R* msg) {
+    ::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> ops;
+    ops.RecvMessage(msg);
+    call_->PerformOps(&ops);
+    return call_->cq()->Pluck(&ops) && ops.got_message;
+  }
+
+  bool Write(const W& msg, ::grpc::WriteOptions options) {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
+      return false;
+    }
+    if (!ctx_->sent_initial_metadata_) {
+      ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_,
+                                             ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ctx_->pending_ops_.set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+    call_->PerformOps(&ctx_->pending_ops_);
+    // if this is the last message we defer the pluck until AFTER we start
+    // the trailing md op. This prevents hangs. See
+    // https://github.com/grpc/grpc/issues/11546
+    if (options.is_last_message()) {
+      ctx_->has_pending_ops_ = true;
+      return true;
+    }
+    ctx_->has_pending_ops_ = false;
+    return call_->cq()->Pluck(&ctx_->pending_ops_);
+  }
+
+ private:
+  grpc::internal::Call* const call_;
+  ::grpc_impl::ServerContext* const ctx_;
+};
+
+}  // namespace internal
+
+/// Synchronous (blocking) server-side API for a bidirectional
+/// streaming call, where the incoming message stream coming from the client has
+/// messages of type \a R, and the outgoing message streaming coming from
+/// the server has messages of type \a W.
+template <class W, class R>
+class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> {
+ public:
+  /// See the \a ServerStreamingInterface.SendInitialMetadata method
+  /// for semantics. Note that initial metadata will be affected by the
+  /// \a ServerContext associated with this call.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  bool Read(R* msg) override { return body_.Read(msg); }
+
+  /// See the \a WriterInterface.Write(const W& msg, WriteOptions options)
+  /// method for semantics.
+  /// Side effect:
+  ///   Also sends initial metadata if not already sent (using the \a
+  ///   ServerContext associated with this call).
+  using internal::WriterInterface<W>::Write;
+  bool Write(const W& msg, ::grpc::WriteOptions options) override {
+    return body_.Write(msg, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<W, R> body_;
+
+  friend class ::grpc_impl::internal::TemplatedBidiStreamingHandler<
+      ServerReaderWriter<W, R>, false>;
+  ServerReaderWriter(::grpc::internal::Call* call,
+                     ::grpc_impl::ServerContext* ctx)
+      : body_(call, ctx) {}
+};
+
+/// A class to represent a flow-controlled unary call. This is something
+/// of a hybrid between conventional unary and streaming. This is invoked
+/// through a unary call on the client side, but the server responds to it
+/// as though it were a single-ping-pong streaming call. The server can use
+/// the \a NextMessageSize method to determine an upper-bound on the size of
+/// the message. A key difference relative to streaming: ServerUnaryStreamer
+/// must have exactly 1 Read and exactly 1 Write, in that order, to function
+/// correctly. Otherwise, the RPC is in error.
+template <class RequestType, class ResponseType>
+class ServerUnaryStreamer final
+    : public ServerReaderWriterInterface<ResponseType, RequestType> {
+ public:
+  /// Block to send initial metadata to client.
+  /// Implicit input parameter:
+  ///    - the \a ServerContext associated with this call will be used for
+  ///      sending initial metadata.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  /// Get an upper bound on the request message size from the client.
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  /// Read a message of type \a R into \a msg. Completion will be notified by \a
+  /// tag on the associated completion queue.
+  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
+  /// should not be called concurrently with other streaming APIs
+  /// on the same stream. It is not meaningful to call it concurrently
+  /// with another \a ReaderInterface::Read on the same stream since reads on
+  /// the same stream are delivered in order.
+  ///
+  /// \param[out] msg Where to eventually store the read message.
+  /// \param[in] tag The tag identifying the operation.
+  bool Read(RequestType* request) override {
+    if (read_done_) {
+      return false;
+    }
+    read_done_ = true;
+    return body_.Read(request);
+  }
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  using internal::WriterInterface<ResponseType>::Write;
+  bool Write(const ResponseType& response,
+             ::grpc::WriteOptions options) override {
+    if (write_done_ || !read_done_) {
+      return false;
+    }
+    write_done_ = true;
+    return body_.Write(response, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
+  bool read_done_;
+  bool write_done_;
+
+  friend class ::grpc_impl::internal::TemplatedBidiStreamingHandler<
+      ServerUnaryStreamer<RequestType, ResponseType>, true>;
+  ServerUnaryStreamer(::grpc::internal::Call* call,
+                      ::grpc_impl::ServerContext* ctx)
+      : body_(call, ctx), read_done_(false), write_done_(false) {}
+};
+
+/// A class to represent a flow-controlled server-side streaming call.
+/// This is something of a hybrid between server-side and bidi streaming.
+/// This is invoked through a server-side streaming call on the client side,
+/// but the server responds to it as though it were a bidi streaming call that
+/// must first have exactly 1 Read and then any number of Writes.
+template <class RequestType, class ResponseType>
+class ServerSplitStreamer final
+    : public ServerReaderWriterInterface<ResponseType, RequestType> {
+ public:
+  /// Block to send initial metadata to client.
+  /// Implicit input parameter:
+  ///    - the \a ServerContext associated with this call will be used for
+  ///      sending initial metadata.
+  void SendInitialMetadata() override { body_.SendInitialMetadata(); }
+
+  /// Get an upper bound on the request message size from the client.
+  bool NextMessageSize(uint32_t* sz) override {
+    return body_.NextMessageSize(sz);
+  }
+
+  /// Read a message of type \a R into \a msg. Completion will be notified by \a
+  /// tag on the associated completion queue.
+  /// This is thread-safe with respect to \a Write or \a WritesDone methods. It
+  /// should not be called concurrently with other streaming APIs
+  /// on the same stream. It is not meaningful to call it concurrently
+  /// with another \a ReaderInterface::Read on the same stream since reads on
+  /// the same stream are delivered in order.
+  ///
+  /// \param[out] msg Where to eventually store the read message.
+  /// \param[in] tag The tag identifying the operation.
+  bool Read(RequestType* request) override {
+    if (read_done_) {
+      return false;
+    }
+    read_done_ = true;
+    return body_.Read(request);
+  }
+
+  /// Block to write \a msg to the stream with WriteOptions \a options.
+  /// This is thread-safe with respect to \a ReaderInterface::Read
+  ///
+  /// \param msg The message to be written to the stream.
+  /// \param options The WriteOptions affecting the write operation.
+  ///
+  /// \return \a true on success, \a false when the stream has been closed.
+  using internal::WriterInterface<ResponseType>::Write;
+  bool Write(const ResponseType& response,
+             ::grpc::WriteOptions options) override {
+    return read_done_ && body_.Write(response, options);
+  }
+
+ private:
+  internal::ServerReaderWriterBody<ResponseType, RequestType> body_;
+  bool read_done_;
+
+  friend class ::grpc_impl::internal::TemplatedBidiStreamingHandler<
+      ServerSplitStreamer<RequestType, ResponseType>, false>;
+  ServerSplitStreamer(::grpc::internal::Call* call,
+                      ::grpc_impl::ServerContext* ctx)
+      : body_(call, ctx), read_done_(false) {}
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/time.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/time.h
new file mode 100644
index 0000000..a08e9cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/codegen/time.h	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_CODEGEN_TIME_H
+#define GRPCPP_IMPL_CODEGEN_TIME_H
+
+#include <chrono>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/config.h>
+
+namespace grpc {
+
+/** If you are trying to use CompletionQueue::AsyncNext with a time class that
+    isn't either gpr_timespec or std::chrono::system_clock::time_point, you
+    will most likely be looking at this comment as your compiler will have
+    fired an error below. In order to fix this issue, you have two potential
+    solutions:
+
+      1. Use gpr_timespec or std::chrono::system_clock::time_point instead
+      2. Specialize the TimePoint class with whichever time class that you
+         want to use here. See below for two examples of how to do this.
+ */
+template <typename T>
+class TimePoint {
+ public:
+  // If you see the error with methods below, you may need either
+  // i) using the existing types having a conversion class such as
+  // gpr_timespec and std::chrono::system_clock::time_point or
+  // ii) writing a new TimePoint<YourType> to address your case.
+  TimePoint(const T& /*time*/) = delete;
+  gpr_timespec raw_time() = delete;
+};
+
+template <>
+class TimePoint<gpr_timespec> {
+ public:
+  TimePoint(const gpr_timespec& time) : time_(time) {}
+  gpr_timespec raw_time() { return time_; }
+
+ private:
+  gpr_timespec time_;
+};
+
+}  // namespace grpc
+
+namespace grpc {
+
+// from and to should be absolute time.
+void Timepoint2Timespec(const std::chrono::system_clock::time_point& from,
+                        gpr_timespec* to);
+void TimepointHR2Timespec(
+    const std::chrono::high_resolution_clock::time_point& from,
+    gpr_timespec* to);
+
+std::chrono::system_clock::time_point Timespec2Timepoint(gpr_timespec t);
+
+template <>
+class TimePoint<std::chrono::system_clock::time_point> {
+ public:
+  TimePoint(const std::chrono::system_clock::time_point& time) {
+    Timepoint2Timespec(time, &time_);
+  }
+  gpr_timespec raw_time() const { return time_; }
+
+ private:
+  gpr_timespec time_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_CODEGEN_TIME_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/grpc_library.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/grpc_library.h
new file mode 100644
index 0000000..3711c09
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/grpc_library.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_GRPC_LIBRARY_H
+#define GRPCPP_IMPL_GRPC_LIBRARY_H
+
+#include <iostream>
+
+#include <grpc/grpc.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+
+namespace grpc {
+
+namespace internal {
+class GrpcLibrary final : public GrpcLibraryInterface {
+ public:
+  void init() override { grpc_init(); }
+  void shutdown() override { grpc_shutdown(); }
+};
+
+/// Instantiating this class ensures the proper initialization of gRPC.
+class GrpcLibraryInitializer final {
+ public:
+  GrpcLibraryInitializer() {
+    if (grpc::g_glip == nullptr) {
+      static auto* const g_gli = new GrpcLibrary();
+      grpc::g_glip = g_gli;
+    }
+    if (grpc::g_core_codegen_interface == nullptr) {
+      static auto* const g_core_codegen = new CoreCodegen();
+      grpc::g_core_codegen_interface = g_core_codegen;
+    }
+  }
+
+  /// A no-op method to force the linker to reference this class, which will
+  /// take care of initializing and shutting down the gRPC runtime.
+  int summon() { return 0; }
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_GRPC_LIBRARY_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/method_handler_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/method_handler_impl.h
new file mode 100644
index 0000000..7f3be64
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/method_handler_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_METHOD_HANDLER_IMPL_H
+#define GRPCPP_IMPL_METHOD_HANDLER_IMPL_H
+
+#include <grpcpp/impl/codegen/method_handler_impl.h>
+
+#endif  // GRPCPP_IMPL_METHOD_HANDLER_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_method.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_method.h
new file mode 100644
index 0000000..5da7041
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_method.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_RPC_METHOD_H
+#define GRPCPP_IMPL_RPC_METHOD_H
+
+#include <grpcpp/impl/codegen/rpc_method.h>
+
+#endif  // GRPCPP_IMPL_RPC_METHOD_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_service_method.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_service_method.h
new file mode 100644
index 0000000..ef70a3a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/rpc_service_method.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_RPC_SERVICE_METHOD_H
+#define GRPCPP_IMPL_RPC_SERVICE_METHOD_H
+
+#include <grpcpp/impl/codegen/rpc_service_method.h>
+
+#endif  // GRPCPP_IMPL_RPC_SERVICE_METHOD_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/serialization_traits.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/serialization_traits.h
new file mode 100644
index 0000000..95194fb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/serialization_traits.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERIALIZATION_TRAITS_H
+#define GRPCPP_IMPL_SERIALIZATION_TRAITS_H
+
+#include <grpcpp/impl/codegen/serialization_traits.h>
+
+#endif  // GRPCPP_IMPL_SERIALIZATION_TRAITS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option.h
new file mode 100644
index 0000000..4b3d6b5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVER_BUILDER_OPTION_H
+#define GRPCPP_IMPL_SERVER_BUILDER_OPTION_H
+
+#include <grpcpp/impl/server_builder_option_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ServerBuilderOption ServerBuilderOption;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_SERVER_BUILDER_OPTION_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option_impl.h
new file mode 100644
index 0000000..8271d0f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_option_impl.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVER_BUILDER_OPTION_IMPL_H
+#define GRPCPP_IMPL_SERVER_BUILDER_OPTION_IMPL_H
+
+#include <map>
+#include <memory>
+
+#include <grpcpp/impl/server_builder_plugin.h>
+#include <grpcpp/support/channel_arguments.h>
+
+namespace grpc_impl {
+
+/// Interface to pass an option to a \a ServerBuilder.
+class ServerBuilderOption {
+ public:
+  virtual ~ServerBuilderOption() {}
+  /// Alter the \a ChannelArguments used to create the gRPC server.
+  virtual void UpdateArguments(grpc::ChannelArguments* args) = 0;
+  /// Alter the ServerBuilderPlugin map that will be added into ServerBuilder.
+  virtual void UpdatePlugins(
+      std::vector<std::unique_ptr<grpc::ServerBuilderPlugin>>* plugins) = 0;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_SERVER_BUILDER_OPTION_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_plugin.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_plugin.h
new file mode 100644
index 0000000..203e546
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_builder_plugin.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVER_BUILDER_PLUGIN_H
+#define GRPCPP_IMPL_SERVER_BUILDER_PLUGIN_H
+
+#include <memory>
+
+#include <grpcpp/support/channel_arguments.h>
+#include <grpcpp/support/config.h>
+
+namespace grpc_impl {
+
+class ServerBuilder;
+class ServerInitializer;
+}  // namespace grpc_impl
+namespace grpc {
+
+/// This interface is meant for internal usage only. Implementations of this
+/// interface should add themselves to a \a ServerBuilder instance through the
+/// \a InternalAddPluginFactory method.
+class ServerBuilderPlugin {
+ public:
+  virtual ~ServerBuilderPlugin() {}
+  virtual grpc::string name() = 0;
+
+  /// UpdateServerBuilder will be called at an early stage in
+  /// ServerBuilder::BuildAndStart(), right after the ServerBuilderOptions have
+  /// done their updates.
+  virtual void UpdateServerBuilder(grpc_impl::ServerBuilder* /*builder*/) {}
+
+  /// InitServer will be called in ServerBuilder::BuildAndStart(), after the
+  /// Server instance is created.
+  virtual void InitServer(grpc_impl::ServerInitializer* si) = 0;
+
+  /// Finish will be called at the end of ServerBuilder::BuildAndStart().
+  virtual void Finish(grpc_impl::ServerInitializer* si) = 0;
+
+  /// ChangeArguments is an interface that can be used in
+  /// ServerBuilderOption::UpdatePlugins
+  virtual void ChangeArguments(const grpc::string& name, void* value) = 0;
+
+  /// UpdateChannelArguments will be called in ServerBuilder::BuildAndStart(),
+  /// before the Server instance is created.
+  virtual void UpdateChannelArguments(ChannelArguments* /*args*/) {}
+
+  virtual bool has_sync_methods() const { return false; }
+  virtual bool has_async_methods() const { return false; }
+};
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_SERVER_BUILDER_PLUGIN_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer.h
new file mode 100644
index 0000000..d40bb98
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVER_INITIALIZER_H
+#define GRPCPP_IMPL_SERVER_INITIALIZER_H
+
+#include <grpcpp/impl/server_initializer_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ServerInitializer ServerInitializer;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_SERVER_INITIALIZER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer_impl.h
new file mode 100644
index 0000000..0e2c65f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/server_initializer_impl.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVER_INITIALIZER_IMPL_H
+#define GRPCPP_IMPL_SERVER_INITIALIZER_IMPL_H
+
+#include <memory>
+#include <vector>
+
+#include <grpcpp/server.h>
+
+namespace grpc {
+
+class Service;
+}  // namespace grpc
+namespace grpc_impl {
+class Server;
+
+class ServerInitializer {
+ public:
+  ServerInitializer(grpc::Server* server) : server_(server) {}
+
+  bool RegisterService(std::shared_ptr<grpc::Service> service) {
+    if (!server_->RegisterService(nullptr, service.get())) {
+      return false;
+    }
+    default_services_.push_back(service);
+    return true;
+  }
+
+  const std::vector<grpc::string>* GetServiceList() {
+    return &server_->services_;
+  }
+
+ private:
+  grpc::Server* server_;
+  std::vector<std::shared_ptr<grpc::Service> > default_services_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_IMPL_SERVER_INITIALIZER_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/service_type.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/service_type.h
new file mode 100644
index 0000000..250bc8c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/impl/service_type.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_IMPL_SERVICE_TYPE_H
+#define GRPCPP_IMPL_SERVICE_TYPE_H
+
+#include <grpcpp/impl/codegen/service_type.h>
+
+#endif  // GRPCPP_IMPL_SERVICE_TYPE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota.h
new file mode 100644
index 0000000..333767b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_RESOURCE_QUOTA_H
+#define GRPCPP_RESOURCE_QUOTA_H
+
+#include <grpcpp/resource_quota_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ResourceQuota ResourceQuota;
+}  // namespace grpc
+
+#endif  // GRPCPP_RESOURCE_QUOTA_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota_impl.h
new file mode 100644
index 0000000..16c0e35
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/resource_quota_impl.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_RESOURCE_QUOTA_IMPL_H
+#define GRPCPP_RESOURCE_QUOTA_IMPL_H
+
+struct grpc_resource_quota;
+
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+
+namespace grpc_impl {
+
+/// ResourceQuota represents a bound on memory and thread usage by the gRPC
+/// library. A ResourceQuota can be attached to a server (via \a ServerBuilder),
+/// or a client channel (via \a ChannelArguments).
+/// gRPC will attempt to keep memory and threads used by all attached entities
+/// below the ResourceQuota bound.
+class ResourceQuota final : private ::grpc::GrpcLibraryCodegen {
+ public:
+  /// \param name - a unique name for this ResourceQuota.
+  explicit ResourceQuota(const grpc::string& name);
+  ResourceQuota();
+  ~ResourceQuota();
+
+  /// Resize this \a ResourceQuota to a new size. If \a new_size is smaller
+  /// than the current size of the pool, memory usage will be monotonically
+  /// decreased until it falls under \a new_size.
+  /// No time bound is given for this to occur however.
+  ResourceQuota& Resize(size_t new_size);
+
+  /// Set the max number of threads that can be allocated from this
+  /// ResourceQuota object.
+  ///
+  /// If the new_max_threads value is smaller than the current value, no new
+  /// threads are allocated until the number of active threads fall below
+  /// new_max_threads. There is no time bound on when this may happen i.e none
+  /// of the current threads are forcefully destroyed and all threads run their
+  /// normal course.
+  ResourceQuota& SetMaxThreads(int new_max_threads);
+
+  grpc_resource_quota* c_resource_quota() const { return impl_; }
+
+ private:
+  ResourceQuota(const ResourceQuota& rhs);
+  ResourceQuota& operator=(const ResourceQuota& rhs);
+
+  grpc_resource_quota* const impl_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_RESOURCE_QUOTA_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_context.h
new file mode 100644
index 0000000..7a6f2cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_context.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_AUTH_CONTEXT_H
+#define GRPCPP_SECURITY_AUTH_CONTEXT_H
+
+#include <grpcpp/impl/codegen/security/auth_context.h>
+
+#endif  // GRPCPP_SECURITY_AUTH_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor.h
new file mode 100644
index 0000000..1b66b72
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_H
+#define GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_H
+
+#include <grpcpp/security/auth_metadata_processor_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::AuthMetadataProcessor AuthMetadataProcessor;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor_impl.h
new file mode 100644
index 0000000..ae45420
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/auth_metadata_processor_impl.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_IMPL_H
+#define GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_IMPL_H
+
+#include <map>
+
+#include <grpcpp/security/auth_context.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc_impl {
+
+/// Interface allowing custom server-side authorization based on credentials
+/// encoded in metadata.  Objects of this type can be passed to
+/// \a ServerCredentials::SetAuthMetadataProcessor().
+class AuthMetadataProcessor {
+ public:
+  typedef std::multimap<grpc::string_ref, grpc::string_ref> InputMetadata;
+  typedef std::multimap<grpc::string, grpc::string> OutputMetadata;
+
+  virtual ~AuthMetadataProcessor() {}
+
+  /// If this method returns true, the \a Process function will be scheduled in
+  /// a different thread from the one processing the call.
+  virtual bool IsBlocking() const { return true; }
+
+  /// context is read/write: it contains the properties of the channel peer and
+  /// it is the job of the Process method to augment it with properties derived
+  /// from the passed-in auth_metadata.
+  /// consumed_auth_metadata needs to be filled with metadata that has been
+  /// consumed by the processor and will be removed from the call.
+  /// response_metadata is the metadata that will be sent as part of the
+  /// response.
+  /// If the return value is not Status::OK, the rpc call will be aborted with
+  /// the error code and error message sent back to the client.
+  virtual grpc::Status Process(const InputMetadata& auth_metadata,
+                               grpc::AuthContext* context,
+                               OutputMetadata* consumed_auth_metadata,
+                               OutputMetadata* response_metadata) = 0;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SECURITY_AUTH_METADATA_PROCESSOR_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials.h
new file mode 100644
index 0000000..0449017
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_CREDENTIALS_H
+#define GRPCPP_SECURITY_CREDENTIALS_H
+
+#include <grpcpp/security/credentials_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ChannelCredentials ChannelCredentials;
+typedef ::grpc_impl::CallCredentials CallCredentials;
+typedef ::grpc_impl::SslCredentialsOptions SslCredentialsOptions;
+typedef ::grpc_impl::SecureCallCredentials SecureCallCredentials;
+typedef ::grpc_impl::SecureChannelCredentials SecureChannelCredentials;
+typedef ::grpc_impl::MetadataCredentialsPlugin MetadataCredentialsPlugin;
+
+static inline std::shared_ptr<grpc_impl::ChannelCredentials>
+GoogleDefaultCredentials() {
+  return ::grpc_impl::GoogleDefaultCredentials();
+}
+
+static inline std::shared_ptr<ChannelCredentials> SslCredentials(
+    const SslCredentialsOptions& options) {
+  return ::grpc_impl::SslCredentials(options);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+GoogleComputeEngineCredentials() {
+  return ::grpc_impl::GoogleComputeEngineCredentials();
+}
+
+/// Constant for maximum auth token lifetime.
+constexpr long kMaxAuthTokenLifetimeSecs =
+    ::grpc_impl::kMaxAuthTokenLifetimeSecs;
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+ServiceAccountJWTAccessCredentials(
+    const grpc::string& json_key,
+    long token_lifetime_seconds = grpc::kMaxAuthTokenLifetimeSecs) {
+  return ::grpc_impl::ServiceAccountJWTAccessCredentials(
+      json_key, token_lifetime_seconds);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+GoogleRefreshTokenCredentials(const grpc::string& json_refresh_token) {
+  return ::grpc_impl::GoogleRefreshTokenCredentials(json_refresh_token);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+AccessTokenCredentials(const grpc::string& access_token) {
+  return ::grpc_impl::AccessTokenCredentials(access_token);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials> GoogleIAMCredentials(
+    const grpc::string& authorization_token,
+    const grpc::string& authority_selector) {
+  return ::grpc_impl::GoogleIAMCredentials(authorization_token,
+                                           authority_selector);
+}
+
+static inline std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
+    const std::shared_ptr<ChannelCredentials>& channel_creds,
+    const std::shared_ptr<CallCredentials>& call_creds) {
+  return ::grpc_impl::CompositeChannelCredentials(channel_creds, call_creds);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+CompositeCallCredentials(const std::shared_ptr<CallCredentials>& creds1,
+                         const std::shared_ptr<CallCredentials>& creds2) {
+  return ::grpc_impl::CompositeCallCredentials(creds1, creds2);
+}
+
+static inline std::shared_ptr<grpc_impl::ChannelCredentials>
+InsecureChannelCredentials() {
+  return ::grpc_impl::InsecureChannelCredentials();
+}
+
+typedef ::grpc_impl::MetadataCredentialsPlugin MetadataCredentialsPlugin;
+
+static inline std::shared_ptr<grpc_impl::CallCredentials>
+MetadataCredentialsFromPlugin(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin) {
+  return ::grpc_impl::MetadataCredentialsFromPlugin(std::move(plugin));
+}
+
+namespace experimental {
+
+typedef ::grpc_impl::experimental::StsCredentialsOptions StsCredentialsOptions;
+
+static inline grpc::Status StsCredentialsOptionsFromJson(
+    const grpc::string& json_string, StsCredentialsOptions* options) {
+  return ::grpc_impl::experimental::StsCredentialsOptionsFromJson(json_string,
+                                                                  options);
+}
+
+static inline grpc::Status StsCredentialsOptionsFromEnv(
+    StsCredentialsOptions* options) {
+  return grpc_impl::experimental::StsCredentialsOptionsFromEnv(options);
+}
+
+static inline std::shared_ptr<grpc_impl::CallCredentials> StsCredentials(
+    const StsCredentialsOptions& options) {
+  return grpc_impl::experimental::StsCredentials(options);
+}
+
+typedef ::grpc_impl::experimental::AltsCredentialsOptions
+    AltsCredentialsOptions;
+
+static inline std::shared_ptr<grpc_impl::ChannelCredentials> AltsCredentials(
+    const AltsCredentialsOptions& options) {
+  return ::grpc_impl::experimental::AltsCredentials(options);
+}
+
+static inline std::shared_ptr<grpc_impl::ChannelCredentials> LocalCredentials(
+    grpc_local_connect_type type) {
+  return ::grpc_impl::experimental::LocalCredentials(type);
+}
+
+static inline std::shared_ptr<grpc_impl::ChannelCredentials> TlsCredentials(
+    const ::grpc_impl::experimental::TlsCredentialsOptions& options) {
+  return ::grpc_impl::experimental::TlsCredentials(options);
+}
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_SECURITY_CREDENTIALS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials_impl.h
new file mode 100644
index 0000000..0841517
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/credentials_impl.h	
@@ -0,0 +1,351 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_CREDENTIALS_IMPL_H
+#define GRPCPP_SECURITY_CREDENTIALS_IMPL_H
+
+#include <map>
+#include <memory>
+#include <vector>
+
+#include <grpc/grpc_security_constants.h>
+#include <grpcpp/channel_impl.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/security/auth_context.h>
+#include <grpcpp/security/tls_credentials_options.h>
+#include <grpcpp/support/channel_arguments_impl.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/string_ref.h>
+
+struct grpc_call;
+
+namespace grpc_impl {
+
+class ChannelCredentials;
+class CallCredentials;
+class SecureCallCredentials;
+class SecureChannelCredentials;
+
+std::shared_ptr<Channel> CreateCustomChannelImpl(
+    const grpc::string& target,
+    const std::shared_ptr<ChannelCredentials>& creds,
+    const ChannelArguments& args);
+
+namespace experimental {
+std::shared_ptr<Channel> CreateCustomChannelWithInterceptors(
+    const grpc::string& target,
+    const std::shared_ptr<ChannelCredentials>& creds,
+    const ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators);
+}
+
+/// A channel credentials object encapsulates all the state needed by a client
+/// to authenticate with a server for a given channel.
+/// It can make various assertions, e.g., about the client’s identity, role
+/// for all the calls on that channel.
+///
+/// \see https://grpc.io/docs/guides/auth.html
+class ChannelCredentials : private grpc::GrpcLibraryCodegen {
+ public:
+  ChannelCredentials();
+  ~ChannelCredentials();
+
+ protected:
+  friend std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
+      const std::shared_ptr<ChannelCredentials>& channel_creds,
+      const std::shared_ptr<CallCredentials>& call_creds);
+
+  virtual SecureChannelCredentials* AsSecureCredentials() = 0;
+
+ private:
+  friend std::shared_ptr<Channel> CreateCustomChannelImpl(
+      const grpc::string& target,
+      const std::shared_ptr<ChannelCredentials>& creds,
+      const ChannelArguments& args);
+
+  friend std::shared_ptr<Channel>
+  grpc_impl::experimental::CreateCustomChannelWithInterceptors(
+      const grpc::string& target,
+      const std::shared_ptr<ChannelCredentials>& creds,
+      const ChannelArguments& args,
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>
+          interceptor_creators);
+
+  virtual std::shared_ptr<Channel> CreateChannelImpl(
+      const grpc::string& target, const ChannelArguments& args) = 0;
+
+  // This function should have been a pure virtual function, but it is
+  // implemented as a virtual function so that it does not break API.
+  virtual std::shared_ptr<Channel> CreateChannelWithInterceptors(
+      const grpc::string& /*target*/, const ChannelArguments& /*args*/,
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>
+      /*interceptor_creators*/) {
+    return nullptr;
+  }
+};
+
+/// A call credentials object encapsulates the state needed by a client to
+/// authenticate with a server for a given call on a channel.
+///
+/// \see https://grpc.io/docs/guides/auth.html
+class CallCredentials : private grpc::GrpcLibraryCodegen {
+ public:
+  CallCredentials();
+  ~CallCredentials();
+
+  /// Apply this instance's credentials to \a call.
+  virtual bool ApplyToCall(grpc_call* call) = 0;
+
+ protected:
+  friend std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
+      const std::shared_ptr<ChannelCredentials>& channel_creds,
+      const std::shared_ptr<CallCredentials>& call_creds);
+
+  friend std::shared_ptr<CallCredentials> CompositeCallCredentials(
+      const std::shared_ptr<CallCredentials>& creds1,
+      const std::shared_ptr<CallCredentials>& creds2);
+
+  virtual SecureCallCredentials* AsSecureCredentials() = 0;
+};
+
+/// Options used to build SslCredentials.
+struct SslCredentialsOptions {
+  /// The buffer containing the PEM encoding of the server root certificates. If
+  /// this parameter is empty, the default roots will be used.  The default
+  /// roots can be overridden using the \a GRPC_DEFAULT_SSL_ROOTS_FILE_PATH
+  /// environment variable pointing to a file on the file system containing the
+  /// roots.
+  grpc::string pem_root_certs;
+
+  /// The buffer containing the PEM encoding of the client's private key. This
+  /// parameter can be empty if the client does not have a private key.
+  grpc::string pem_private_key;
+
+  /// The buffer containing the PEM encoding of the client's certificate chain.
+  /// This parameter can be empty if the client does not have a certificate
+  /// chain.
+  grpc::string pem_cert_chain;
+};
+
+// Factories for building different types of Credentials The functions may
+// return empty shared_ptr when credentials cannot be created. If a
+// Credentials pointer is returned, it can still be invalid when used to create
+// a channel. A lame channel will be created then and all rpcs will fail on it.
+
+/// Builds credentials with reasonable defaults.
+///
+/// \warning Only use these credentials when connecting to a Google endpoint.
+/// Using these credentials to connect to any other service may result in this
+/// service being able to impersonate your client for requests to Google
+/// services.
+std::shared_ptr<ChannelCredentials> GoogleDefaultCredentials();
+
+/// Builds SSL Credentials given SSL specific options
+std::shared_ptr<ChannelCredentials> SslCredentials(
+    const SslCredentialsOptions& options);
+
+/// Builds credentials for use when running in GCE
+///
+/// \warning Only use these credentials when connecting to a Google endpoint.
+/// Using these credentials to connect to any other service may result in this
+/// service being able to impersonate your client for requests to Google
+/// services.
+std::shared_ptr<CallCredentials> GoogleComputeEngineCredentials();
+
+constexpr long kMaxAuthTokenLifetimeSecs = 3600;
+
+/// Builds Service Account JWT Access credentials.
+/// json_key is the JSON key string containing the client's private key.
+/// token_lifetime_seconds is the lifetime in seconds of each Json Web Token
+/// (JWT) created with this credentials. It should not exceed
+/// \a kMaxAuthTokenLifetimeSecs or will be cropped to this value.
+std::shared_ptr<CallCredentials> ServiceAccountJWTAccessCredentials(
+    const grpc::string& json_key,
+    long token_lifetime_seconds = grpc_impl::kMaxAuthTokenLifetimeSecs);
+
+/// Builds refresh token credentials.
+/// json_refresh_token is the JSON string containing the refresh token along
+/// with a client_id and client_secret.
+///
+/// \warning Only use these credentials when connecting to a Google endpoint.
+/// Using these credentials to connect to any other service may result in this
+/// service being able to impersonate your client for requests to Google
+/// services.
+std::shared_ptr<CallCredentials> GoogleRefreshTokenCredentials(
+    const grpc::string& json_refresh_token);
+
+/// Builds access token credentials.
+/// access_token is an oauth2 access token that was fetched using an out of band
+/// mechanism.
+///
+/// \warning Only use these credentials when connecting to a Google endpoint.
+/// Using these credentials to connect to any other service may result in this
+/// service being able to impersonate your client for requests to Google
+/// services.
+std::shared_ptr<CallCredentials> AccessTokenCredentials(
+    const grpc::string& access_token);
+
+/// Builds IAM credentials.
+///
+/// \warning Only use these credentials when connecting to a Google endpoint.
+/// Using these credentials to connect to any other service may result in this
+/// service being able to impersonate your client for requests to Google
+/// services.
+std::shared_ptr<CallCredentials> GoogleIAMCredentials(
+    const grpc::string& authorization_token,
+    const grpc::string& authority_selector);
+
+/// Combines a channel credentials and a call credentials into a composite
+/// channel credentials.
+std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
+    const std::shared_ptr<ChannelCredentials>& channel_creds,
+    const std::shared_ptr<CallCredentials>& call_creds);
+
+/// Combines two call credentials objects into a composite call credentials.
+std::shared_ptr<CallCredentials> CompositeCallCredentials(
+    const std::shared_ptr<CallCredentials>& creds1,
+    const std::shared_ptr<CallCredentials>& creds2);
+
+/// Credentials for an unencrypted, unauthenticated channel
+std::shared_ptr<ChannelCredentials> InsecureChannelCredentials();
+
+/// User defined metadata credentials.
+class MetadataCredentialsPlugin {
+ public:
+  virtual ~MetadataCredentialsPlugin() {}
+
+  /// If this method returns true, the Process function will be scheduled in
+  /// a different thread from the one processing the call.
+  virtual bool IsBlocking() const { return true; }
+
+  /// Type of credentials this plugin is implementing.
+  virtual const char* GetType() const { return ""; }
+
+  /// Gets the auth metatada produced by this plugin.
+  /// The fully qualified method name is:
+  /// service_url + "/" + method_name.
+  /// The channel_auth_context contains (among other things), the identity of
+  /// the server.
+  virtual grpc::Status GetMetadata(
+      grpc::string_ref service_url, grpc::string_ref method_name,
+      const grpc::AuthContext& channel_auth_context,
+      std::multimap<grpc::string, grpc::string>* metadata) = 0;
+};
+
+std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin);
+
+namespace experimental {
+
+/// Options for creating STS Oauth Token Exchange credentials following the IETF
+/// draft https://tools.ietf.org/html/draft-ietf-oauth-token-exchange-16.
+/// Optional fields may be set to empty string. It is the responsibility of the
+/// caller to ensure that the subject and actor tokens are refreshed on disk at
+/// the specified paths.
+struct StsCredentialsOptions {
+  grpc::string token_exchange_service_uri;  // Required.
+  grpc::string resource;                    // Optional.
+  grpc::string audience;                    // Optional.
+  grpc::string scope;                       // Optional.
+  grpc::string requested_token_type;        // Optional.
+  grpc::string subject_token_path;          // Required.
+  grpc::string subject_token_type;          // Required.
+  grpc::string actor_token_path;            // Optional.
+  grpc::string actor_token_type;            // Optional.
+};
+
+/// Creates STS Options from a JSON string. The JSON schema is as follows:
+/// {
+///   "title": "STS Credentials Config",
+///   "type": "object",
+///   "required": ["token_exchange_service_uri", "subject_token_path",
+///                "subject_token_type"],
+///    "properties": {
+///      "token_exchange_service_uri": {
+///        "type": "string"
+///     },
+///     "resource": {
+///       "type": "string"
+///     },
+///     "audience": {
+///       "type": "string"
+///     },
+///     "scope": {
+///       "type": "string"
+///     },
+///     "requested_token_type": {
+///       "type": "string"
+///     },
+///     "subject_token_path": {
+///       "type": "string"
+///     },
+///     "subject_token_type": {
+///     "type": "string"
+///     },
+///     "actor_token_path" : {
+///       "type": "string"
+///     },
+///     "actor_token_type": {
+///       "type": "string"
+///     }
+///   }
+/// }
+grpc::Status StsCredentialsOptionsFromJson(const grpc::string& json_string,
+                                           StsCredentialsOptions* options);
+
+/// Creates STS credentials options from the $STS_CREDENTIALS environment
+/// variable. This environment variable points to the path of a JSON file
+/// comforming to the schema described above.
+grpc::Status StsCredentialsOptionsFromEnv(StsCredentialsOptions* options);
+
+std::shared_ptr<CallCredentials> StsCredentials(
+    const StsCredentialsOptions& options);
+
+std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin,
+    grpc_security_level min_security_level);
+
+/// Options used to build AltsCredentials.
+struct AltsCredentialsOptions {
+  /// service accounts of target endpoint that will be acceptable
+  /// by the client. If service accounts are provided and none of them matches
+  /// that of the server, authentication will fail.
+  std::vector<grpc::string> target_service_accounts;
+};
+
+/// Builds ALTS Credentials given ALTS specific options
+std::shared_ptr<ChannelCredentials> AltsCredentials(
+    const AltsCredentialsOptions& options);
+
+/// Builds Local Credentials.
+std::shared_ptr<ChannelCredentials> LocalCredentials(
+    grpc_local_connect_type type);
+
+/// Builds TLS Credentials given TLS options.
+std::shared_ptr<ChannelCredentials> TlsCredentials(
+    const TlsCredentialsOptions& options);
+
+}  // namespace experimental
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SECURITY_CREDENTIALS_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials.h
new file mode 100644
index 0000000..f41c05d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_SERVER_CREDENTIALS_H
+#define GRPCPP_SECURITY_SERVER_CREDENTIALS_H
+
+#include <grpcpp/security/server_credentials_impl.h>
+
+namespace grpc_impl {
+
+class Server;
+}  // namespace grpc_impl
+namespace grpc {
+
+typedef ::grpc_impl::ServerCredentials ServerCredentials;
+
+/// Options to create ServerCredentials with SSL
+struct SslServerCredentialsOptions {
+  /// \warning Deprecated
+  SslServerCredentialsOptions()
+      : force_client_auth(false),
+        client_certificate_request(GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE) {}
+  SslServerCredentialsOptions(
+      grpc_ssl_client_certificate_request_type request_type)
+      : force_client_auth(false), client_certificate_request(request_type) {}
+
+  struct PemKeyCertPair {
+    grpc::string private_key;
+    grpc::string cert_chain;
+  };
+  grpc::string pem_root_certs;
+  std::vector<PemKeyCertPair> pem_key_cert_pairs;
+  /// \warning Deprecated
+  bool force_client_auth;
+
+  /// If both \a force_client_auth and \a client_certificate_request
+  /// fields are set, \a force_client_auth takes effect, i.e.
+  /// \a REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
+  /// will be enforced.
+  grpc_ssl_client_certificate_request_type client_certificate_request;
+};
+
+static inline std::shared_ptr<ServerCredentials> SslServerCredentials(
+    const SslServerCredentialsOptions& options) {
+  return ::grpc_impl::SslServerCredentials(options);
+}
+
+static inline std::shared_ptr<ServerCredentials> InsecureServerCredentials() {
+  return ::grpc_impl::InsecureServerCredentials();
+}
+
+namespace experimental {
+
+typedef ::grpc_impl::experimental::AltsServerCredentialsOptions
+    AltsServerCredentialsOptions;
+
+static inline std::shared_ptr<ServerCredentials> AltsServerCredentials(
+    const AltsServerCredentialsOptions& options) {
+  return ::grpc_impl::experimental::AltsServerCredentials(options);
+}
+
+static inline std::shared_ptr<ServerCredentials> LocalServerCredentials(
+    grpc_local_connect_type type) {
+  return ::grpc_impl::experimental::LocalServerCredentials(type);
+}
+
+/// Builds TLS ServerCredentials given TLS options.
+static inline std::shared_ptr<ServerCredentials> TlsServerCredentials(
+    const ::grpc_impl::experimental::TlsCredentialsOptions& options) {
+  return ::grpc_impl::experimental::TlsServerCredentials(options);
+}
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_SECURITY_SERVER_CREDENTIALS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials_impl.h
new file mode 100644
index 0000000..efd7cf6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/server_credentials_impl.h	
@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_SERVER_CREDENTIALS_IMPL_H
+#define GRPCPP_SECURITY_SERVER_CREDENTIALS_IMPL_H
+
+#include <memory>
+#include <vector>
+
+#include <grpc/grpc_security_constants.h>
+#include <grpcpp/security/auth_metadata_processor.h>
+#include <grpcpp/security/tls_credentials_options.h>
+#include <grpcpp/support/config.h>
+
+struct grpc_server;
+
+namespace grpc {
+
+struct SslServerCredentialsOptions;
+}  // namespace grpc
+namespace grpc_impl {
+class Server;
+
+/// Wrapper around \a grpc_server_credentials, a way to authenticate a server.
+class ServerCredentials {
+ public:
+  virtual ~ServerCredentials();
+
+  /// This method is not thread-safe and has to be called before the server is
+  /// started. The last call to this function wins.
+  virtual void SetAuthMetadataProcessor(
+      const std::shared_ptr<grpc::AuthMetadataProcessor>& processor) = 0;
+
+ private:
+  friend class ::grpc_impl::Server;
+
+  /// Tries to bind \a server to the given \a addr (eg, localhost:1234,
+  /// 192.168.1.1:31416, [::1]:27182, etc.)
+  ///
+  /// \return bound port number on success, 0 on failure.
+  // TODO(dgq): the "port" part seems to be a misnomer.
+  virtual int AddPortToServer(const grpc::string& addr,
+                              grpc_server* server) = 0;
+};
+
+/// Builds SSL ServerCredentials given SSL specific options
+std::shared_ptr<ServerCredentials> SslServerCredentials(
+    const grpc::SslServerCredentialsOptions& options);
+
+/// Builds insecure server credentials.
+std::shared_ptr<ServerCredentials> InsecureServerCredentials();
+
+namespace experimental {
+
+/// Options to create ServerCredentials with ALTS
+struct AltsServerCredentialsOptions {
+  /// Add fields if needed.
+};
+
+/// Builds ALTS ServerCredentials given ALTS specific options
+std::shared_ptr<ServerCredentials> AltsServerCredentials(
+    const AltsServerCredentialsOptions& options);
+
+/// Builds Local ServerCredentials.
+std::shared_ptr<ServerCredentials> LocalServerCredentials(
+    grpc_local_connect_type type);
+
+/// Builds TLS ServerCredentials given TLS options.
+std::shared_ptr<ServerCredentials> TlsServerCredentials(
+    const TlsCredentialsOptions& options);
+
+}  // namespace experimental
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SECURITY_SERVER_CREDENTIALS_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/tls_credentials_options.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/tls_credentials_options.h
new file mode 100644
index 0000000..d832268
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/security/tls_credentials_options.h	
@@ -0,0 +1,330 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SECURITY_TLS_CREDENTIALS_OPTIONS_H
+#define GRPCPP_SECURITY_TLS_CREDENTIALS_OPTIONS_H
+
+#include <memory>
+#include <vector>
+
+#include <grpc/grpc_security_constants.h>
+#include <grpc/status.h>
+#include <grpc/support/log.h>
+#include <grpcpp/support/config.h>
+
+typedef struct grpc_tls_credential_reload_arg grpc_tls_credential_reload_arg;
+typedef struct grpc_tls_credential_reload_config
+    grpc_tls_credential_reload_config;
+typedef struct grpc_tls_server_authorization_check_arg
+    grpc_tls_server_authorization_check_arg;
+typedef struct grpc_tls_server_authorization_check_config
+    grpc_tls_server_authorization_check_config;
+typedef struct grpc_tls_credentials_options grpc_tls_credentials_options;
+
+namespace grpc_impl {
+namespace experimental {
+
+/** TLS key materials config, wrapper for grpc_tls_key_materials_config. It is
+ * used for experimental purposes for now and subject to change. **/
+class TlsKeyMaterialsConfig {
+ public:
+  struct PemKeyCertPair {
+    grpc::string private_key;
+    grpc::string cert_chain;
+  };
+
+  /** Getters for member fields. **/
+  const grpc::string pem_root_certs() const { return pem_root_certs_; }
+  const std::vector<PemKeyCertPair>& pem_key_cert_pair_list() const {
+    return pem_key_cert_pair_list_;
+  }
+  int version() const { return version_; }
+
+  /** Setter for key materials that will be called by the user. Ownership of the
+   * arguments will not be transferred. **/
+  void set_pem_root_certs(const grpc::string& pem_root_certs);
+  void add_pem_key_cert_pair(const PemKeyCertPair& pem_key_cert_pair);
+  void set_key_materials(
+      const grpc::string& pem_root_certs,
+      const std::vector<PemKeyCertPair>& pem_key_cert_pair_list);
+  void set_version(int version) { version_ = version; };
+
+ private:
+  int version_ = 0;
+  std::vector<PemKeyCertPair> pem_key_cert_pair_list_;
+  grpc::string pem_root_certs_;
+};
+
+/** TLS credential reload arguments, wraps grpc_tls_credential_reload_arg. It is
+ *  used for experimental purposes for now and it is subject to change.
+ *
+ *  The credential reload arg contains all the info necessary to schedule/cancel
+ *  a credential reload request. The callback function must be called after
+ *  finishing the schedule operation. See the description of the
+ *  grpc_tls_credential_reload_arg struct in grpc_security.h for more details.
+ * **/
+class TlsCredentialReloadArg {
+ public:
+  /** TlsCredentialReloadArg does not take ownership of the C arg that is passed
+   *  to the constructor. One must remember to free any memory allocated to the
+   * C arg after using the setter functions below. **/
+  TlsCredentialReloadArg(grpc_tls_credential_reload_arg* arg);
+  ~TlsCredentialReloadArg();
+
+  /** Getters for member fields. **/
+  void* cb_user_data() const;
+  bool is_pem_key_cert_pair_list_empty() const;
+  grpc_ssl_certificate_config_reload_status status() const;
+  grpc::string error_details() const;
+
+  /** Setters for member fields. Ownership of the arguments will not be
+   *  transferred. **/
+  void set_cb_user_data(void* cb_user_data);
+  void set_pem_root_certs(const grpc::string& pem_root_certs);
+  void add_pem_key_cert_pair(
+      const TlsKeyMaterialsConfig::PemKeyCertPair& pem_key_cert_pair);
+  void set_key_materials(const grpc::string& pem_root_certs,
+                         std::vector<TlsKeyMaterialsConfig::PemKeyCertPair>
+                             pem_key_cert_pair_list);
+  void set_key_materials_config(
+      const std::shared_ptr<TlsKeyMaterialsConfig>& key_materials_config);
+  void set_status(grpc_ssl_certificate_config_reload_status status);
+  void set_error_details(const grpc::string& error_details);
+
+  /** Calls the C arg's callback function. **/
+  void OnCredentialReloadDoneCallback();
+
+ private:
+  grpc_tls_credential_reload_arg* c_arg_;
+};
+
+/** An interface that the application derives and uses to instantiate a
+ * TlsCredentialReloadConfig instance. Refer to the definition of the
+ * grpc_tls_credential_reload_config in grpc_tls_credentials_options.h for more
+ * details on the expectations of the member functions of the interface. **/
+struct TlsCredentialReloadInterface {
+  virtual ~TlsCredentialReloadInterface() = default;
+  /** A callback that invokes the credential reload. **/
+  virtual int Schedule(TlsCredentialReloadArg* arg) = 0;
+  /** A callback that cancels a credential reload request. **/
+  virtual void Cancel(TlsCredentialReloadArg* /* arg */) {}
+};
+
+/** TLS credential reloag config, wraps grpc_tls_credential_reload_config. It is
+ * used for experimental purposes for now and it is subject to change. **/
+class TlsCredentialReloadConfig {
+ public:
+  TlsCredentialReloadConfig(std::shared_ptr<TlsCredentialReloadInterface>
+                                credential_reload_interface);
+  ~TlsCredentialReloadConfig();
+
+  int Schedule(TlsCredentialReloadArg* arg) const {
+    if (credential_reload_interface_ == nullptr) {
+      gpr_log(GPR_ERROR, "credential reload interface is nullptr");
+      if (arg != nullptr) {
+        arg->set_status(GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL);
+        arg->set_error_details(
+            "the interface of the credential reload config is nullptr");
+      }
+      return 1;
+    }
+    return credential_reload_interface_->Schedule(arg);
+  }
+
+  void Cancel(TlsCredentialReloadArg* arg) const {
+    if (credential_reload_interface_ == nullptr) {
+      gpr_log(GPR_ERROR, "credential reload interface is nullptr");
+      if (arg != nullptr) {
+        arg->set_status(GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL);
+        arg->set_error_details(
+            "the interface of the credential reload config is nullptr");
+      }
+      return;
+    }
+    credential_reload_interface_->Cancel(arg);
+  }
+
+  /** Returns a C struct for the credential reload config. **/
+  grpc_tls_credential_reload_config* c_config() const { return c_config_; }
+
+ private:
+  grpc_tls_credential_reload_config* c_config_;
+  std::shared_ptr<TlsCredentialReloadInterface> credential_reload_interface_;
+};
+
+/** TLS server authorization check arguments, wraps
+ *  grpc_tls_server_authorization_check_arg. It is used for experimental
+ *  purposes for now and it is subject to change.
+ *
+ *  The server authorization check arg contains all the info necessary to
+ *  schedule/cancel a server authorization check request. The callback function
+ *  must be called after finishing the schedule operation. See the description
+ *  of the grpc_tls_server_authorization_check_arg struct in grpc_security.h for
+ *  more details. **/
+class TlsServerAuthorizationCheckArg {
+ public:
+  /** TlsServerAuthorizationCheckArg does not take ownership of the C arg passed
+   * to the constructor. One must remember to free any memory allocated to the
+   * C arg after using the setter functions below. **/
+  TlsServerAuthorizationCheckArg(grpc_tls_server_authorization_check_arg* arg);
+  ~TlsServerAuthorizationCheckArg();
+
+  /** Getters for member fields. **/
+  void* cb_user_data() const;
+  int success() const;
+  grpc::string target_name() const;
+  grpc::string peer_cert() const;
+  grpc::string peer_cert_full_chain() const;
+  grpc_status_code status() const;
+  grpc::string error_details() const;
+
+  /** Setters for member fields. **/
+  void set_cb_user_data(void* cb_user_data);
+  void set_success(int success);
+  void set_target_name(const grpc::string& target_name);
+  void set_peer_cert(const grpc::string& peer_cert);
+  void set_peer_cert_full_chain(const grpc::string& peer_cert_full_chain);
+  void set_status(grpc_status_code status);
+  void set_error_details(const grpc::string& error_details);
+
+  /** Calls the C arg's callback function. **/
+  void OnServerAuthorizationCheckDoneCallback();
+
+ private:
+  grpc_tls_server_authorization_check_arg* c_arg_;
+};
+
+/** An interface that the application derives and uses to instantiate a
+ * TlsServerAuthorizationCheckConfig instance. Refer to the definition of the
+ * grpc_tls_server_authorization_check_config in grpc_tls_credentials_options.h
+ * for more details on the expectations of the member functions of the
+ * interface.
+ * **/
+struct TlsServerAuthorizationCheckInterface {
+  virtual ~TlsServerAuthorizationCheckInterface() = default;
+  /** A callback that invokes the server authorization check. **/
+  virtual int Schedule(TlsServerAuthorizationCheckArg* arg) = 0;
+  /** A callback that cancels a server authorization check request. **/
+  virtual void Cancel(TlsServerAuthorizationCheckArg* /* arg */) {}
+};
+
+/** TLS server authorization check config, wraps
+ *  grps_tls_server_authorization_check_config. It is used for experimental
+ *  purposes for now and it is subject to change. **/
+class TlsServerAuthorizationCheckConfig {
+ public:
+  TlsServerAuthorizationCheckConfig(
+      std::shared_ptr<TlsServerAuthorizationCheckInterface>
+          server_authorization_check_interface);
+  ~TlsServerAuthorizationCheckConfig();
+
+  int Schedule(TlsServerAuthorizationCheckArg* arg) const {
+    if (server_authorization_check_interface_ == nullptr) {
+      gpr_log(GPR_ERROR, "server authorization check interface is nullptr");
+      if (arg != nullptr) {
+        arg->set_status(GRPC_STATUS_NOT_FOUND);
+        arg->set_error_details(
+            "the interface of the server authorization check config is "
+            "nullptr");
+      }
+      return 1;
+    }
+    return server_authorization_check_interface_->Schedule(arg);
+  }
+
+  void Cancel(TlsServerAuthorizationCheckArg* arg) const {
+    if (server_authorization_check_interface_ == nullptr) {
+      gpr_log(GPR_ERROR, "server authorization check interface is nullptr");
+      if (arg != nullptr) {
+        arg->set_status(GRPC_STATUS_NOT_FOUND);
+        arg->set_error_details(
+            "the interface of the server authorization check config is "
+            "nullptr");
+      }
+      return;
+    }
+    server_authorization_check_interface_->Cancel(arg);
+  }
+
+  /** Returns C struct for the server authorization check config. **/
+  grpc_tls_server_authorization_check_config* c_config() const {
+    return c_config_;
+  }
+
+ private:
+  grpc_tls_server_authorization_check_config* c_config_;
+  std::shared_ptr<TlsServerAuthorizationCheckInterface>
+      server_authorization_check_interface_;
+};
+
+/** TLS credentials options, wrapper for grpc_tls_credentials_options. It is
+ * used for experimental purposes for now and it is subject to change. See the
+ * description of the grpc_tls_credentials_options struct in grpc_security.h for
+ * more details. **/
+class TlsCredentialsOptions {
+ public:
+  TlsCredentialsOptions(
+      grpc_ssl_client_certificate_request_type cert_request_type,
+      grpc_tls_server_verification_option server_verification_option,
+      std::shared_ptr<TlsKeyMaterialsConfig> key_materials_config,
+      std::shared_ptr<TlsCredentialReloadConfig> credential_reload_config,
+      std::shared_ptr<TlsServerAuthorizationCheckConfig>
+          server_authorization_check_config);
+  ~TlsCredentialsOptions();
+
+  /** Getters for member fields. **/
+  grpc_ssl_client_certificate_request_type cert_request_type() const {
+    return cert_request_type_;
+  }
+  grpc_tls_server_verification_option server_verification_option() const {
+    return server_verification_option_;
+  }
+  std::shared_ptr<TlsKeyMaterialsConfig> key_materials_config() const {
+    return key_materials_config_;
+  }
+  std::shared_ptr<TlsCredentialReloadConfig> credential_reload_config() const {
+    return credential_reload_config_;
+  }
+  std::shared_ptr<TlsServerAuthorizationCheckConfig>
+  server_authorization_check_config() const {
+    return server_authorization_check_config_;
+  }
+  grpc_tls_credentials_options* c_credentials_options() const {
+    return c_credentials_options_;
+  }
+
+ private:
+  /** The cert_request_type_ flag is only relevant when the
+   * TlsCredentialsOptions are used to instantiate server credentials; the flag
+   * goes unused when creating channel credentials, and the user can set it to
+   * GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE. **/
+  grpc_ssl_client_certificate_request_type cert_request_type_;
+  /** The server_verification_option_ flag is only relevant when the
+   * TlsCredentialsOptions are used to instantiate client credentials; **/
+  grpc_tls_server_verification_option server_verification_option_;
+  std::shared_ptr<TlsKeyMaterialsConfig> key_materials_config_;
+  std::shared_ptr<TlsCredentialReloadConfig> credential_reload_config_;
+  std::shared_ptr<TlsServerAuthorizationCheckConfig>
+      server_authorization_check_config_;
+  grpc_tls_credentials_options* c_credentials_options_;
+};
+
+}  // namespace experimental
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SECURITY_TLS_CREDENTIALS_OPTIONS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server.h
new file mode 100644
index 0000000..3de2aba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_H
+#define GRPCPP_SERVER_H
+
+#include <grpcpp/server_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::Server Server;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SERVER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder.h
new file mode 100644
index 0000000..d9ec7c4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_BUILDER_H
+#define GRPCPP_SERVER_BUILDER_H
+
+#include <grpcpp/server_builder_impl.h>
+
+namespace grpc {
+
+typedef ::grpc_impl::ServerBuilder ServerBuilder;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SERVER_BUILDER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder_impl.h
new file mode 100644
index 0000000..294a798
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_builder_impl.h	
@@ -0,0 +1,416 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_BUILDER_IMPL_H
+#define GRPCPP_SERVER_BUILDER_IMPL_H
+
+#include <climits>
+#include <map>
+#include <memory>
+#include <vector>
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/compression.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/workaround_list.h>
+#include <grpcpp/impl/channel_argument_option.h>
+#include <grpcpp/impl/codegen/server_interceptor.h>
+#include <grpcpp/impl/server_builder_option.h>
+#include <grpcpp/impl/server_builder_plugin.h>
+#include <grpcpp/server.h>
+#include <grpcpp/support/config.h>
+
+struct grpc_resource_quota;
+
+namespace grpc_impl {
+
+class CompletionQueue;
+class ResourceQuota;
+class Server;
+class ServerCompletionQueue;
+class ServerCredentials;
+}  // namespace grpc_impl
+
+namespace grpc {
+
+class AsyncGenericService;
+class Service;
+namespace testing {
+class ServerBuilderPluginTest;
+}  // namespace testing
+
+namespace internal {
+class ExternalConnectionAcceptorImpl;
+}  // namespace internal
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+namespace experimental {
+#endif
+class CallbackGenericService;
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+}  // namespace experimental
+#endif
+
+namespace experimental {
+// EXPERIMENTAL API:
+// Interface for a grpc server to build transports with connections created out
+// of band.
+// See ServerBuilder's AddExternalConnectionAcceptor API.
+class ExternalConnectionAcceptor {
+ public:
+  struct NewConnectionParameters {
+    int listener_fd = -1;
+    int fd = -1;
+    ByteBuffer read_buffer;  // data intended for the grpc server
+  };
+  virtual ~ExternalConnectionAcceptor() {}
+  // If called before grpc::Server is started or after it is shut down, the new
+  // connection will be closed.
+  virtual void HandleNewConnection(NewConnectionParameters* p) = 0;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+namespace grpc_impl {
+
+/// A builder class for the creation and startup of \a grpc::Server instances.
+class ServerBuilder {
+ public:
+  ServerBuilder();
+  virtual ~ServerBuilder();
+
+  //////////////////////////////////////////////////////////////////////////////
+  // Primary API's
+
+  /// Return a running server which is ready for processing calls.
+  /// Before calling, one typically needs to ensure that:
+  ///  1. a service is registered - so that the server knows what to serve
+  ///     (via RegisterService, or RegisterAsyncGenericService)
+  ///  2. a listening port has been added - so the server knows where to receive
+  ///     traffic (via AddListeningPort)
+  ///  3. [for async api only] completion queues have been added via
+  ///     AddCompletionQueue
+  virtual std::unique_ptr<grpc::Server> BuildAndStart();
+
+  /// Register a service. This call does not take ownership of the service.
+  /// The service must exist for the lifetime of the \a Server instance returned
+  /// by \a BuildAndStart().
+  /// Matches requests with any :authority
+  ServerBuilder& RegisterService(grpc::Service* service);
+
+  /// Enlists an endpoint \a addr (port with an optional IP address) to
+  /// bind the \a grpc::Server object to be created to.
+  ///
+  /// It can be invoked multiple times.
+  ///
+  /// \param addr_uri The address to try to bind to the server in URI form. If
+  /// the scheme name is omitted, "dns:///" is assumed. To bind to any address,
+  /// please use IPv6 any, i.e., [::]:<port>, which also accepts IPv4
+  /// connections.  Valid values include dns:///localhost:1234, /
+  /// 192.168.1.1:31416, dns:///[::1]:27182, etc.).
+  /// \param creds The credentials associated with the server.
+  /// \param selected_port[out] If not `nullptr`, gets populated with the port
+  /// number bound to the \a grpc::Server for the corresponding endpoint after
+  /// it is successfully bound by BuildAndStart(), 0 otherwise. AddListeningPort
+  /// does not modify this pointer.
+  ServerBuilder& AddListeningPort(
+      const grpc::string& addr_uri,
+      std::shared_ptr<grpc_impl::ServerCredentials> creds,
+      int* selected_port = nullptr);
+
+  /// Add a completion queue for handling asynchronous services.
+  ///
+  /// Best performance is typically obtained by using one thread per polling
+  /// completion queue.
+  ///
+  /// Caller is required to shutdown the server prior to shutting down the
+  /// returned completion queue. Caller is also required to drain the
+  /// completion queue after shutting it down. A typical usage scenario:
+  ///
+  /// // While building the server:
+  /// ServerBuilder builder;
+  /// ...
+  /// cq_ = builder.AddCompletionQueue();
+  /// server_ = builder.BuildAndStart();
+  ///
+  /// // While shutting down the server;
+  /// server_->Shutdown();
+  /// cq_->Shutdown();  // Always *after* the associated server's Shutdown()!
+  /// // Drain the cq_ that was created
+  /// void* ignored_tag;
+  /// bool ignored_ok;
+  /// while (cq_->Next(&ignored_tag, &ignored_ok)) { }
+  ///
+  /// \param is_frequently_polled This is an optional parameter to inform gRPC
+  /// library about whether this completion queue would be frequently polled
+  /// (i.e. by calling \a Next() or \a AsyncNext()). The default value is
+  /// 'true' and is the recommended setting. Setting this to 'false' (i.e.
+  /// not polling the completion queue frequently) will have a significantly
+  /// negative performance impact and hence should not be used in production
+  /// use cases.
+  std::unique_ptr<grpc_impl::ServerCompletionQueue> AddCompletionQueue(
+      bool is_frequently_polled = true);
+
+  //////////////////////////////////////////////////////////////////////////////
+  // Less commonly used RegisterService variants
+
+  /// Register a service. This call does not take ownership of the service.
+  /// The service must exist for the lifetime of the \a Server instance
+  /// returned by \a BuildAndStart(). Only matches requests with :authority \a
+  /// host
+  ServerBuilder& RegisterService(const grpc::string& host,
+                                 grpc::Service* service);
+
+  /// Register a generic service.
+  /// Matches requests with any :authority
+  /// This is mostly useful for writing generic gRPC Proxies where the exact
+  /// serialization format is unknown
+  ServerBuilder& RegisterAsyncGenericService(
+      grpc::AsyncGenericService* service);
+
+  //////////////////////////////////////////////////////////////////////////////
+  // Fine control knobs
+
+  /// Set max receive message size in bytes.
+  /// The default is GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH.
+  ServerBuilder& SetMaxReceiveMessageSize(int max_receive_message_size) {
+    max_receive_message_size_ = max_receive_message_size;
+    return *this;
+  }
+
+  /// Set max send message size in bytes.
+  /// The default is GRPC_DEFAULT_MAX_SEND_MESSAGE_LENGTH.
+  ServerBuilder& SetMaxSendMessageSize(int max_send_message_size) {
+    max_send_message_size_ = max_send_message_size;
+    return *this;
+  }
+
+  /// \deprecated For backward compatibility.
+  ServerBuilder& SetMaxMessageSize(int max_message_size) {
+    return SetMaxReceiveMessageSize(max_message_size);
+  }
+
+  /// Set the support status for compression algorithms. All algorithms are
+  /// enabled by default.
+  ///
+  /// Incoming calls compressed with an unsupported algorithm will fail with
+  /// \a GRPC_STATUS_UNIMPLEMENTED.
+  ServerBuilder& SetCompressionAlgorithmSupportStatus(
+      grpc_compression_algorithm algorithm, bool enabled);
+
+  /// The default compression level to use for all channel calls in the
+  /// absence of a call-specific level.
+  ServerBuilder& SetDefaultCompressionLevel(grpc_compression_level level);
+
+  /// The default compression algorithm to use for all channel calls in the
+  /// absence of a call-specific level. Note that it overrides any compression
+  /// level set by \a SetDefaultCompressionLevel.
+  ServerBuilder& SetDefaultCompressionAlgorithm(
+      grpc_compression_algorithm algorithm);
+
+  /// Set the attached buffer pool for this server
+  ServerBuilder& SetResourceQuota(
+      const grpc_impl::ResourceQuota& resource_quota);
+
+  ServerBuilder& SetOption(std::unique_ptr<grpc::ServerBuilderOption> option);
+
+  /// Options for synchronous servers.
+  enum SyncServerOption {
+    NUM_CQS,         ///< Number of completion queues.
+    MIN_POLLERS,     ///< Minimum number of polling threads.
+    MAX_POLLERS,     ///< Maximum number of polling threads.
+    CQ_TIMEOUT_MSEC  ///< Completion queue timeout in milliseconds.
+  };
+
+  /// Only useful if this is a Synchronous server.
+  ServerBuilder& SetSyncServerOption(SyncServerOption option, int value);
+
+  /// Add a channel argument (an escape hatch to tuning core library parameters
+  /// directly)
+  template <class T>
+  ServerBuilder& AddChannelArgument(const grpc::string& arg, const T& value) {
+    return SetOption(grpc::MakeChannelArgumentOption(arg, value));
+  }
+
+  /// For internal use only: Register a ServerBuilderPlugin factory function.
+  static void InternalAddPluginFactory(
+      std::unique_ptr<grpc::ServerBuilderPlugin> (*CreatePlugin)());
+
+  /// Enable a server workaround. Do not use unless you know what the workaround
+  /// does. For explanation and detailed descriptions of workarounds, see
+  /// doc/workarounds.md.
+  ServerBuilder& EnableWorkaround(grpc_workaround_list id);
+
+  /// NOTE: class experimental_type is not part of the public API of this class.
+  /// TODO(yashykt): Integrate into public API when this is no longer
+  /// experimental.
+  class experimental_type {
+   public:
+    explicit experimental_type(grpc_impl::ServerBuilder* builder)
+        : builder_(builder) {}
+
+    void SetInterceptorCreators(
+        std::vector<std::unique_ptr<
+            grpc::experimental::ServerInterceptorFactoryInterface>>
+            interceptor_creators) {
+      builder_->interceptor_creators_ = std::move(interceptor_creators);
+    }
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+    /// Register a generic service that uses the callback API.
+    /// Matches requests with any :authority
+    /// This is mostly useful for writing generic gRPC Proxies where the exact
+    /// serialization format is unknown
+    ServerBuilder& RegisterCallbackGenericService(
+        grpc::experimental::CallbackGenericService* service);
+#endif
+
+    enum class ExternalConnectionType {
+      FROM_FD = 0  // in the form of a file descriptor
+    };
+
+    /// Register an acceptor to handle the externally accepted connection in
+    /// grpc server. The returned acceptor can be used to pass the connection
+    /// to grpc server, where a channel will be created with the provided
+    /// server credentials.
+    std::unique_ptr<grpc::experimental::ExternalConnectionAcceptor>
+    AddExternalConnectionAcceptor(ExternalConnectionType type,
+                                  std::shared_ptr<ServerCredentials> creds);
+
+   private:
+    ServerBuilder* builder_;
+  };
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  /// Register a generic service that uses the callback API.
+  /// Matches requests with any :authority
+  /// This is mostly useful for writing generic gRPC Proxies where the exact
+  /// serialization format is unknown
+  ServerBuilder& RegisterCallbackGenericService(
+      grpc::CallbackGenericService* service);
+#endif
+
+  /// NOTE: The function experimental() is not stable public API. It is a view
+  /// to the experimental components of this class. It may be changed or removed
+  /// at any time.
+  experimental_type experimental() { return experimental_type(this); }
+
+ protected:
+  /// Experimental, to be deprecated
+  struct Port {
+    grpc::string addr;
+    std::shared_ptr<grpc_impl::ServerCredentials> creds;
+    int* selected_port;
+  };
+
+  /// Experimental, to be deprecated
+  typedef std::unique_ptr<grpc::string> HostString;
+  struct NamedService {
+    explicit NamedService(grpc::Service* s) : service(s) {}
+    NamedService(const grpc::string& h, grpc::Service* s)
+        : host(new grpc::string(h)), service(s) {}
+    HostString host;
+    grpc::Service* service;
+  };
+
+  /// Experimental, to be deprecated
+  std::vector<Port> ports() { return ports_; }
+
+  /// Experimental, to be deprecated
+  std::vector<NamedService*> services() {
+    std::vector<NamedService*> service_refs;
+    for (auto& ptr : services_) {
+      service_refs.push_back(ptr.get());
+    }
+    return service_refs;
+  }
+
+  /// Experimental, to be deprecated
+  std::vector<grpc::ServerBuilderOption*> options() {
+    std::vector<grpc::ServerBuilderOption*> option_refs;
+    for (auto& ptr : options_) {
+      option_refs.push_back(ptr.get());
+    }
+    return option_refs;
+  }
+
+ private:
+  friend class ::grpc::testing::ServerBuilderPluginTest;
+
+  struct SyncServerSettings {
+    SyncServerSettings()
+        : num_cqs(1), min_pollers(1), max_pollers(2), cq_timeout_msec(10000) {}
+
+    /// Number of server completion queues to create to listen to incoming RPCs.
+    int num_cqs;
+
+    /// Minimum number of threads per completion queue that should be listening
+    /// to incoming RPCs.
+    int min_pollers;
+
+    /// Maximum number of threads per completion queue that can be listening to
+    /// incoming RPCs.
+    int max_pollers;
+
+    /// The timeout for server completion queue's AsyncNext call.
+    int cq_timeout_msec;
+  };
+
+  int max_receive_message_size_;
+  int max_send_message_size_;
+  std::vector<std::unique_ptr<grpc::ServerBuilderOption>> options_;
+  std::vector<std::unique_ptr<NamedService>> services_;
+  std::vector<Port> ports_;
+
+  SyncServerSettings sync_server_settings_;
+
+  /// List of completion queues added via \a AddCompletionQueue method.
+  std::vector<grpc_impl::ServerCompletionQueue*> cqs_;
+
+  std::shared_ptr<grpc_impl::ServerCredentials> creds_;
+  std::vector<std::unique_ptr<grpc::ServerBuilderPlugin>> plugins_;
+  grpc_resource_quota* resource_quota_;
+  grpc::AsyncGenericService* generic_service_{nullptr};
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  grpc::CallbackGenericService* callback_generic_service_{nullptr};
+#else
+  grpc::experimental::CallbackGenericService* callback_generic_service_{
+      nullptr};
+#endif
+
+  struct {
+    bool is_set;
+    grpc_compression_level level;
+  } maybe_default_compression_level_;
+  struct {
+    bool is_set;
+    grpc_compression_algorithm algorithm;
+  } maybe_default_compression_algorithm_;
+  uint32_t enabled_compression_algorithms_bitset_;
+  std::vector<
+      std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>
+      interceptor_creators_;
+  std::vector<std::shared_ptr<grpc::internal::ExternalConnectionAcceptorImpl>>
+      acceptors_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SERVER_BUILDER_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_context.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_context.h
new file mode 100644
index 0000000..45f2614
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_context.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_CONTEXT_H
+#define GRPCPP_SERVER_CONTEXT_H
+
+#include <grpcpp/impl/codegen/server_context.h>
+
+#endif  // GRPCPP_SERVER_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_impl.h
new file mode 100644
index 0000000..8572c74
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_impl.h	
@@ -0,0 +1,397 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_IMPL_H
+#define GRPCPP_SERVER_IMPL_H
+
+#include <list>
+#include <memory>
+#include <vector>
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/compression.h>
+#include <grpc/support/atm.h>
+#include <grpcpp/channel_impl.h>
+#include <grpcpp/completion_queue_impl.h>
+#include <grpcpp/health_check_service_interface.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+#include <grpcpp/impl/codegen/server_interface.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/security/server_credentials.h>
+#include <grpcpp/support/channel_arguments_impl.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
+
+struct grpc_server;
+
+namespace grpc {
+class AsyncGenericService;
+
+namespace internal {
+class ExternalConnectionAcceptorImpl;
+}  // namespace internal
+
+}  // namespace grpc
+
+namespace grpc_impl {
+class HealthCheckServiceInterface;
+class ServerContext;
+class ServerInitializer;
+
+/// Represents a gRPC server.
+///
+/// Use a \a grpc::ServerBuilder to create, configure, and start
+/// \a Server instances.
+class Server : public grpc::ServerInterface, private grpc::GrpcLibraryCodegen {
+ public:
+  ~Server();
+
+  /// Block until the server shuts down.
+  ///
+  /// \warning The server must be either shutting down or some other thread must
+  /// call \a Shutdown for this function to ever return.
+  void Wait() override;
+
+  /// Global callbacks are a set of hooks that are called when server
+  /// events occur.  \a SetGlobalCallbacks method is used to register
+  /// the hooks with gRPC.  Note that
+  /// the \a GlobalCallbacks instance will be shared among all
+  /// \a Server instances in an application and can be set exactly
+  /// once per application.
+  class GlobalCallbacks {
+   public:
+    virtual ~GlobalCallbacks() {}
+    /// Called before server is created.
+    virtual void UpdateArguments(ChannelArguments* /*args*/) {}
+    /// Called before application callback for each synchronous server request
+    virtual void PreSynchronousRequest(grpc_impl::ServerContext* context) = 0;
+    /// Called after application callback for each synchronous server request
+    virtual void PostSynchronousRequest(grpc_impl::ServerContext* context) = 0;
+    /// Called before server is started.
+    virtual void PreServerStart(Server* /*server*/) {}
+    /// Called after a server port is added.
+    virtual void AddPort(Server* /*server*/, const grpc::string& /*addr*/,
+                         grpc::ServerCredentials* /*creds*/, int /*port*/) {}
+  };
+  /// Set the global callback object. Can only be called once per application.
+  /// Does not take ownership of callbacks, and expects the pointed to object
+  /// to be alive until all server objects in the process have been destroyed.
+  /// The same \a GlobalCallbacks object will be used throughout the
+  /// application and is shared among all \a Server objects.
+  static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
+
+  /// Returns a \em raw pointer to the underlying \a grpc_server instance.
+  /// EXPERIMENTAL:  for internal/test use only
+  grpc_server* c_server();
+
+  /// Returns the health check service.
+  grpc::HealthCheckServiceInterface* GetHealthCheckService() const {
+    return health_check_service_.get();
+  }
+
+  /// Establish a channel for in-process communication
+  std::shared_ptr<Channel> InProcessChannel(const ChannelArguments& args);
+
+  /// NOTE: class experimental_type is not part of the public API of this class.
+  /// TODO(yashykt): Integrate into public API when this is no longer
+  /// experimental.
+  class experimental_type {
+   public:
+    explicit experimental_type(Server* server) : server_(server) {}
+
+    /// Establish a channel for in-process communication with client
+    /// interceptors
+    std::shared_ptr<Channel> InProcessChannelWithInterceptors(
+        const ChannelArguments& args,
+        std::vector<std::unique_ptr<
+            grpc::experimental::ClientInterceptorFactoryInterface>>
+            interceptor_creators);
+
+   private:
+    Server* server_;
+  };
+
+  /// NOTE: The function experimental() is not stable public API. It is a view
+  /// to the experimental components of this class. It may be changed or removed
+  /// at any time.
+  experimental_type experimental() { return experimental_type(this); }
+
+ protected:
+  /// Register a service. This call does not take ownership of the service.
+  /// The service must exist for the lifetime of the Server instance.
+  bool RegisterService(const grpc::string* host,
+                       grpc::Service* service) override;
+
+  /// Try binding the server to the given \a addr endpoint
+  /// (port, and optionally including IP address to bind to).
+  ///
+  /// It can be invoked multiple times. Should be used before
+  /// starting the server.
+  ///
+  /// \param addr The address to try to bind to the server (eg, localhost:1234,
+  /// 192.168.1.1:31416, [::1]:27182, etc.).
+  /// \param creds The credentials associated with the server.
+  ///
+  /// \return bound port number on success, 0 on failure.
+  ///
+  /// \warning It is an error to call this method on an already started server.
+  int AddListeningPort(const grpc::string& addr,
+                       grpc::ServerCredentials* creds) override;
+
+  /// NOTE: This is *NOT* a public API. The server constructors are supposed to
+  /// be used by \a ServerBuilder class only. The constructor will be made
+  /// 'private' very soon.
+  ///
+  /// Server constructors. To be used by \a ServerBuilder only.
+  ///
+  /// \param args The channel args
+  ///
+  /// \param sync_server_cqs The completion queues to use if the server is a
+  /// synchronous server (or a hybrid server). The server polls for new RPCs on
+  /// these queues
+  ///
+  /// \param min_pollers The minimum number of polling threads per server
+  /// completion queue (in param sync_server_cqs) to use for listening to
+  /// incoming requests (used only in case of sync server)
+  ///
+  /// \param max_pollers The maximum number of polling threads per server
+  /// completion queue (in param sync_server_cqs) to use for listening to
+  /// incoming requests (used only in case of sync server)
+  ///
+  /// \param sync_cq_timeout_msec The timeout to use when calling AsyncNext() on
+  /// server completion queues passed via sync_server_cqs param.
+  Server(ChannelArguments* args,
+         std::shared_ptr<std::vector<std::unique_ptr<ServerCompletionQueue>>>
+             sync_server_cqs,
+         int min_pollers, int max_pollers, int sync_cq_timeout_msec,
+         std::vector<
+             std::shared_ptr<grpc::internal::ExternalConnectionAcceptorImpl>>
+             acceptors,
+         grpc_resource_quota* server_rq = nullptr,
+         std::vector<std::unique_ptr<
+             grpc::experimental::ServerInterceptorFactoryInterface>>
+             interceptor_creators = std::vector<std::unique_ptr<
+                 grpc::experimental::ServerInterceptorFactoryInterface>>());
+
+  /// Start the server.
+  ///
+  /// \param cqs Completion queues for handling asynchronous services. The
+  /// caller is required to keep all completion queues live until the server is
+  /// destroyed.
+  /// \param num_cqs How many completion queues does \a cqs hold.
+  void Start(ServerCompletionQueue** cqs, size_t num_cqs) override;
+
+  grpc_server* server() override { return server_; }
+
+ protected:
+  /// NOTE: This method is not part of the public API for this class.
+  void set_health_check_service(
+      std::unique_ptr<grpc::HealthCheckServiceInterface> service) {
+    health_check_service_ = std::move(service);
+  }
+
+  /// NOTE: This method is not part of the public API for this class.
+  bool health_check_service_disabled() const {
+    return health_check_service_disabled_;
+  }
+
+ private:
+  std::vector<
+      std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>*
+  interceptor_creators() override {
+    return &interceptor_creators_;
+  }
+
+  friend class grpc::AsyncGenericService;
+  friend class grpc_impl::ServerBuilder;
+  friend class grpc_impl::ServerInitializer;
+
+  class SyncRequest;
+  class CallbackRequestBase;
+  template <class ServerContextType>
+  class CallbackRequest;
+  class UnimplementedAsyncRequest;
+  class UnimplementedAsyncResponse;
+
+  /// SyncRequestThreadManager is an implementation of ThreadManager. This class
+  /// is responsible for polling for incoming RPCs and calling the RPC handlers.
+  /// This is only used in case of a Sync server (i.e a server exposing a sync
+  /// interface)
+  class SyncRequestThreadManager;
+
+  /// Register a generic service. This call does not take ownership of the
+  /// service. The service must exist for the lifetime of the Server instance.
+  void RegisterAsyncGenericService(grpc::AsyncGenericService* service) override;
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  /// Register a callback-based generic service. This call does not take
+  /// ownership of theservice. The service must exist for the lifetime of the
+  /// Server instance.
+  void RegisterCallbackGenericService(
+      grpc::CallbackGenericService* service) override;
+#else
+  /// NOTE: class experimental_registration_type is not part of the public API
+  /// of this class
+  /// TODO(vjpai): Move these contents to the public API of Server when
+  ///              they are no longer experimental
+  class experimental_registration_type final
+      : public experimental_registration_interface {
+   public:
+    explicit experimental_registration_type(Server* server) : server_(server) {}
+    void RegisterCallbackGenericService(
+        grpc::experimental::CallbackGenericService* service) override {
+      server_->RegisterCallbackGenericService(service);
+    }
+
+   private:
+    Server* server_;
+  };
+
+  /// TODO(vjpai): Mark this override when experimental type above is deleted
+  void RegisterCallbackGenericService(
+      grpc::experimental::CallbackGenericService* service);
+
+  /// NOTE: The function experimental_registration() is not stable public API.
+  /// It is a view to the experimental components of this class. It may be
+  /// changed or removed at any time.
+  experimental_registration_interface* experimental_registration() override {
+    return &experimental_registration_;
+  }
+#endif
+
+  void PerformOpsOnCall(grpc::internal::CallOpSetInterface* ops,
+                        grpc::internal::Call* call) override;
+
+  void ShutdownInternal(gpr_timespec deadline) override;
+
+  int max_receive_message_size() const override {
+    return max_receive_message_size_;
+  }
+
+  CompletionQueue* CallbackCQ() override;
+
+  grpc_impl::ServerInitializer* initializer();
+
+  std::vector<std::shared_ptr<grpc::internal::ExternalConnectionAcceptorImpl>>
+      acceptors_;
+
+  // A vector of interceptor factory objects.
+  // This should be destroyed after health_check_service_ and this requirement
+  // is satisfied by declaring interceptor_creators_ before
+  // health_check_service_. (C++ mandates that member objects be destroyed in
+  // the reverse order of initialization.)
+  std::vector<
+      std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>
+      interceptor_creators_;
+
+  int max_receive_message_size_;
+
+  /// The following completion queues are ONLY used in case of Sync API
+  /// i.e. if the server has any services with sync methods. The server uses
+  /// these completion queues to poll for new RPCs
+  std::shared_ptr<std::vector<std::unique_ptr<ServerCompletionQueue>>>
+      sync_server_cqs_;
+
+  /// List of \a ThreadManager instances (one for each cq in
+  /// the \a sync_server_cqs)
+  std::vector<std::unique_ptr<SyncRequestThreadManager>> sync_req_mgrs_;
+
+  // Outstanding unmatched callback requests, indexed by method.
+  // NOTE: Using a gpr_atm rather than atomic_int because atomic_int isn't
+  //       copyable or movable and thus will cause compilation errors. We
+  //       actually only want to extend the vector before the threaded use
+  //       starts, but this is still a limitation.
+  std::vector<gpr_atm> callback_unmatched_reqs_count_;
+
+  // List of callback requests to start when server actually starts.
+  std::list<CallbackRequestBase*> callback_reqs_to_start_;
+
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  // For registering experimental callback generic service; remove when that
+  // method longer experimental
+  experimental_registration_type experimental_registration_{this};
+#endif
+
+  // Server status
+  grpc::internal::Mutex mu_;
+  bool started_;
+  bool shutdown_;
+  bool shutdown_notified_;  // Was notify called on the shutdown_cv_
+
+  grpc::internal::CondVar shutdown_cv_;
+
+  // It is ok (but not required) to nest callback_reqs_mu_ under mu_ .
+  // Incrementing callback_reqs_outstanding_ is ok without a lock but it must be
+  // decremented under the lock in case it is the last request and enables the
+  // server shutdown. The increment is performance-critical since it happens
+  // during periods of increasing load; the decrement happens only when memory
+  // is maxed out, during server shutdown, or (possibly in a future version)
+  // during decreasing load, so it is less performance-critical.
+  grpc::internal::Mutex callback_reqs_mu_;
+  grpc::internal::CondVar callback_reqs_done_cv_;
+  std::atomic<intptr_t> callback_reqs_outstanding_{0};
+
+  std::shared_ptr<GlobalCallbacks> global_callbacks_;
+
+  std::vector<grpc::string> services_;
+  bool has_async_generic_service_{false};
+  bool has_callback_generic_service_{false};
+
+  // Pointer to the wrapped grpc_server.
+  grpc_server* server_;
+
+  std::unique_ptr<grpc_impl::ServerInitializer> server_initializer_;
+
+  std::unique_ptr<grpc::HealthCheckServiceInterface> health_check_service_;
+  bool health_check_service_disabled_;
+
+  // When appropriate, use a default callback generic service to handle
+  // unimplemented methods
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+  std::unique_ptr<grpc::CallbackGenericService> unimplemented_service_;
+#else
+  std::unique_ptr<grpc::experimental::CallbackGenericService>
+      unimplemented_service_;
+#endif
+
+  // A special handler for resource exhausted in sync case
+  std::unique_ptr<grpc::internal::MethodHandler> resource_exhausted_handler_;
+
+  // Handler for callback generic service, if any
+  std::unique_ptr<grpc::internal::MethodHandler> generic_handler_;
+
+  // callback_cq_ references the callbackable completion queue associated
+  // with this server (if any). It is set on the first call to CallbackCQ().
+  // It is _not owned_ by the server; ownership belongs with its internal
+  // shutdown callback tag (invoked when the CQ is fully shutdown).
+  // It is protected by mu_
+  CompletionQueue* callback_cq_ = nullptr;
+
+  // List of CQs passed in by user that must be Shutdown only after Server is
+  // Shutdown.  Even though this is only used with NDEBUG, instantiate it in all
+  // cases since otherwise the size will be inconsistent.
+  std::vector<CompletionQueue*> cq_list_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SERVER_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix.h
new file mode 100644
index 0000000..3d209cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_POSIX_H
+#define GRPCPP_SERVER_POSIX_H
+
+#include <grpcpp/server_posix_impl.h>
+
+namespace grpc {
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+static inline void AddInsecureChannelFromFd(Server* server, int fd) {
+  ::grpc_impl::AddInsecureChannelFromFd(server, fd);
+}
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SERVER_POSIX_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix_impl.h
new file mode 100644
index 0000000..c29af27
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/server_posix_impl.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SERVER_POSIX_IMPL_H
+#define GRPCPP_SERVER_POSIX_IMPL_H
+
+#include <memory>
+
+#include <grpc/support/port_platform.h>
+#include <grpcpp/server.h>
+
+namespace grpc_impl {
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+/// Add a new client to a \a Server communicating over the given
+/// file descriptor.
+///
+/// \param server The server to add the client to.
+/// \param fd The file descriptor representing a socket.
+void AddInsecureChannelFromFd(grpc::Server* server, int fd);
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SERVER_POSIX_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream.h
new file mode 100644
index 0000000..ff9e455
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_ASYNC_STREAM_H
+#define GRPCPP_SUPPORT_ASYNC_STREAM_H
+
+#include <grpcpp/impl/codegen/async_stream.h>
+
+#endif  // GRPCPP_SUPPORT_ASYNC_STREAM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream_impl.h
new file mode 100644
index 0000000..cff700d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_stream_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H
+#define GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H
+
+#include <grpcpp/impl/codegen/async_stream_impl.h>
+
+#endif  // GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call.h
new file mode 100644
index 0000000..2e5181c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_ASYNC_UNARY_CALL_H
+#define GRPCPP_SUPPORT_ASYNC_UNARY_CALL_H
+
+#include <grpcpp/impl/codegen/async_unary_call.h>
+
+#endif  // GRPCPP_SUPPORT_ASYNC_UNARY_CALL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call_impl.h
new file mode 100644
index 0000000..488fe87
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/async_unary_call_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H
+#define GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H
+
+#include <grpcpp/impl/codegen/async_unary_call_impl.h>
+
+#endif  // GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/byte_buffer.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/byte_buffer.h
new file mode 100644
index 0000000..53aeff1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/byte_buffer.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_BYTE_BUFFER_H
+#define GRPCPP_SUPPORT_BYTE_BUFFER_H
+
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/serialization_traits.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/slice.h>
+#include <grpcpp/support/status.h>
+
+#endif  // GRPCPP_SUPPORT_BYTE_BUFFER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments.h
new file mode 100644
index 0000000..593aaec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_H
+#define GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_H
+
+#include <grpcpp/support/channel_arguments_impl.h>
+
+namespace grpc_impl {
+
+class SecureChannelCredentials;
+class ResourceQuota;
+}  // namespace grpc_impl
+
+namespace grpc {
+
+typedef ::grpc_impl::ChannelArguments ChannelArguments;
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments_impl.h
new file mode 100644
index 0000000..ca3188a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/channel_arguments_impl.h	
@@ -0,0 +1,152 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_IMPL_H
+#define GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_IMPL_H
+
+#include <list>
+#include <vector>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpcpp/resource_quota.h>
+#include <grpcpp/support/config.h>
+
+namespace grpc {
+namespace testing {
+class ChannelArgumentsTest;
+}  // namespace testing
+}  // namespace grpc
+
+namespace grpc_impl {
+
+class SecureChannelCredentials;
+
+/// Options for channel creation. The user can use generic setters to pass
+/// key value pairs down to C channel creation code. For gRPC related options,
+/// concrete setters are provided.
+class ChannelArguments {
+ public:
+  ChannelArguments();
+  ~ChannelArguments();
+
+  ChannelArguments(const ChannelArguments& other);
+  ChannelArguments& operator=(ChannelArguments other) {
+    Swap(other);
+    return *this;
+  }
+
+  void Swap(ChannelArguments& other);
+
+  /// Dump arguments in this instance to \a channel_args. Does not take
+  /// ownership of \a channel_args.
+  ///
+  /// Note that the underlying arguments are shared. Changes made to either \a
+  /// channel_args or this instance would be reflected on both.
+  void SetChannelArgs(grpc_channel_args* channel_args) const;
+
+  // gRPC specific channel argument setters
+  /// Set target name override for SSL host name checking. This option should
+  /// be used with caution in production.
+  void SetSslTargetNameOverride(const grpc::string& name);
+  // TODO(yangg) add flow control options
+  /// Set the compression algorithm for the channel.
+  void SetCompressionAlgorithm(grpc_compression_algorithm algorithm);
+
+  /// Set the grpclb fallback timeout (in ms) for the channel. If this amount
+  /// of time has passed but we have not gotten any non-empty \a serverlist from
+  /// the balancer, we will fall back to use the backend address(es) returned by
+  /// the resolver.
+  void SetGrpclbFallbackTimeout(int fallback_timeout);
+
+  /// For client channel's, the socket mutator operates on
+  /// "channel" sockets. For server's, the socket mutator operates
+  /// only on "listen" sockets.
+  /// TODO(apolcyn): allow socket mutators to also operate
+  /// on server "channel" sockets, and adjust the socket mutator
+  /// object to be more speficic about which type of socket
+  /// it should operate on.
+  void SetSocketMutator(grpc_socket_mutator* mutator);
+
+  /// Set the string to prepend to the user agent.
+  void SetUserAgentPrefix(const grpc::string& user_agent_prefix);
+
+  /// Set the buffer pool to be attached to the constructed channel.
+  void SetResourceQuota(const grpc::ResourceQuota& resource_quota);
+
+  /// Set the max receive and send message sizes.
+  void SetMaxReceiveMessageSize(int size);
+  void SetMaxSendMessageSize(int size);
+
+  /// Set LB policy name.
+  /// Note that if the name resolver returns only balancer addresses, the
+  /// grpclb LB policy will be used, regardless of what is specified here.
+  void SetLoadBalancingPolicyName(const grpc::string& lb_policy_name);
+
+  /// Set service config in JSON form.
+  /// Primarily meant for use in unit tests.
+  void SetServiceConfigJSON(const grpc::string& service_config_json);
+
+  // Generic channel argument setters. Only for advanced use cases.
+  /// Set an integer argument \a value under \a key.
+  void SetInt(const grpc::string& key, int value);
+
+  // Generic channel argument setter. Only for advanced use cases.
+  /// Set a pointer argument \a value under \a key. Owership is not transferred.
+  void SetPointer(const grpc::string& key, void* value);
+
+  void SetPointerWithVtable(const grpc::string& key, void* value,
+                            const grpc_arg_pointer_vtable* vtable);
+
+  /// Set a textual argument \a value under \a key.
+  void SetString(const grpc::string& key, const grpc::string& value);
+
+  /// Return (by value) a C \a grpc_channel_args structure which points to
+  /// arguments owned by this \a ChannelArguments instance
+  grpc_channel_args c_channel_args() const {
+    grpc_channel_args out;
+    out.num_args = args_.size();
+    out.args = args_.empty() ? NULL : const_cast<grpc_arg*>(&args_[0]);
+    return out;
+  }
+
+ private:
+  friend class grpc_impl::SecureChannelCredentials;
+  friend class grpc::testing::ChannelArgumentsTest;
+
+  /// Default pointer argument operations.
+  struct PointerVtableMembers {
+    static void* Copy(void* in) { return in; }
+    static void Destroy(void* /*in*/) {}
+    static int Compare(void* a, void* b) {
+      if (a < b) return -1;
+      if (a > b) return 1;
+      return 0;
+    }
+  };
+
+  // Returns empty string when it is not set.
+  grpc::string GetSslTargetNameOverride() const;
+
+  std::vector<grpc_arg> args_;
+  std::list<grpc::string> strings_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPCPP_SUPPORT_CHANNEL_ARGUMENTS_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback.h
new file mode 100644
index 0000000..063fdc4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CLIENT_CALLBACK_H
+#define GRPCPP_SUPPORT_CLIENT_CALLBACK_H
+
+#include <grpcpp/impl/codegen/client_callback.h>
+
+#endif  // GRPCPP_SUPPORT_CLIENT_CALLBACK_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback_impl.h
new file mode 100644
index 0000000..ed8df41
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_callback_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H
+#define GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H
+
+#include <grpcpp/impl/codegen/client_callback_impl.h>
+
+#endif  // GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_interceptor.h
new file mode 100644
index 0000000..50810e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/client_interceptor.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CLIENT_INTERCEPTOR_H
+#define GRPCPP_SUPPORT_CLIENT_INTERCEPTOR_H
+
+#include <grpcpp/impl/codegen/client_interceptor.h>
+
+#endif  // GRPCPP_SUPPORT_CLIENT_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/config.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/config.h
new file mode 100644
index 0000000..16bdab6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/config.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_CONFIG_H
+#define GRPCPP_SUPPORT_CONFIG_H
+
+#include <grpcpp/impl/codegen/config.h>
+
+#endif  // GRPCPP_SUPPORT_CONFIG_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/interceptor.h
new file mode 100644
index 0000000..7ff7951
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/interceptor.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_INTERCEPTOR_H
+#define GRPCPP_SUPPORT_INTERCEPTOR_H
+
+#include <grpcpp/impl/codegen/interceptor.h>
+
+#endif  // GRPCPP_SUPPORT_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/message_allocator.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/message_allocator.h
new file mode 100644
index 0000000..20ce072
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/message_allocator.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
+#define GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
+
+#include <grpcpp/impl/codegen/message_allocator.h>
+
+#endif  // GRPCPP_SUPPORT_MESSAGE_ALLOCATOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_reader.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_reader.h
new file mode 100644
index 0000000..4cdb65d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_reader.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
+#define GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
+
+#include <grpcpp/impl/codegen/proto_buffer_reader.h>
+
+#endif  // GRPCPP_SUPPORT_PROTO_BUFFER_READER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_writer.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_writer.h
new file mode 100644
index 0000000..01cf29c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/proto_buffer_writer.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
+#define GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
+
+#include <grpcpp/impl/codegen/proto_buffer_writer.h>
+
+#endif  // GRPCPP_SUPPORT_PROTO_BUFFER_WRITER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback.h
new file mode 100644
index 0000000..b0aeeb5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SERVER_CALLBACK_H
+#define GRPCPP_SUPPORT_SERVER_CALLBACK_H
+
+#include <grpcpp/impl/codegen/server_callback.h>
+
+#endif  // GRPCPP_SUPPORT_SERVER_CALLBACK_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback_impl.h
new file mode 100644
index 0000000..a91c814
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_callback_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H
+#define GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H
+
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+
+#endif  // GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_interceptor.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_interceptor.h
new file mode 100644
index 0000000..b0a6229
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/server_interceptor.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
+#define GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
+
+#include <grpcpp/impl/codegen/server_interceptor.h>
+
+#endif  // GRPCPP_SUPPORT_SERVER_INTERCEPTOR_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/slice.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/slice.h
new file mode 100644
index 0000000..eaeb29a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/slice.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SLICE_H
+#define GRPCPP_SUPPORT_SLICE_H
+
+#include <grpc/slice.h>
+#include <grpcpp/impl/codegen/slice.h>
+#include <grpcpp/support/config.h>
+
+#endif  // GRPCPP_SUPPORT_SLICE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status.h
new file mode 100644
index 0000000..91b629f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_STATUS_H
+#define GRPCPP_SUPPORT_STATUS_H
+
+#include <grpcpp/impl/codegen/status.h>
+
+#endif  // GRPCPP_SUPPORT_STATUS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status_code_enum.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status_code_enum.h
new file mode 100644
index 0000000..bfb47f3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/status_code_enum.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
+#define GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
+
+#include <grpcpp/impl/codegen/status_code_enum.h>
+
+#endif  // GRPCPP_SUPPORT_STATUS_CODE_ENUM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/string_ref.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/string_ref.h
new file mode 100644
index 0000000..0e0d3d4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/string_ref.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_STRING_REF_H
+#define GRPCPP_SUPPORT_STRING_REF_H
+
+#include <grpcpp/impl/codegen/string_ref.h>
+
+#endif  // GRPCPP_SUPPORT_STRING_REF_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/stub_options.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/stub_options.h
new file mode 100644
index 0000000..e9700ea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/stub_options.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_STUB_OPTIONS_H
+#define GRPCPP_SUPPORT_STUB_OPTIONS_H
+
+#include <grpcpp/impl/codegen/stub_options.h>
+
+#endif  // GRPCPP_SUPPORT_STUB_OPTIONS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream.h
new file mode 100644
index 0000000..ea60b6d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SYNC_STREAM_H
+#define GRPCPP_SUPPORT_SYNC_STREAM_H
+
+#include <grpcpp/impl/codegen/sync_stream.h>
+
+#endif  // GRPCPP_SUPPORT_SYNC_STREAM_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream_impl.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream_impl.h
new file mode 100644
index 0000000..a00e425
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/sync_stream_impl.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H
+#define GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H
+
+#include <grpcpp/impl/codegen/sync_stream_impl.h>
+
+#endif  // GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/time.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/time.h
new file mode 100644
index 0000000..c7408ff
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/time.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_TIME_H
+#define GRPCPP_SUPPORT_TIME_H
+
+#include <grpcpp/impl/codegen/time.h>
+
+#endif  // GRPCPP_SUPPORT_TIME_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/validate_service_config.h b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/validate_service_config.h
new file mode 100644
index 0000000..41f2c63
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/include/grpcpp/support/validate_service_config.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCPP_SUPPORT_VALIDATE_SERVICE_CONFIG_H
+#define GRPCPP_SUPPORT_VALIDATE_SERVICE_CONFIG_H
+
+#include <grpcpp/support/config.h>
+
+namespace grpc {
+
+namespace experimental {
+/// Validates \a service_config_json. If valid, returns an empty string.
+/// Otherwise, returns the validation error.
+/// TODO(yashykt): Promote it to out of experimental once it is proved useful
+/// and gRFC is accepted.
+grpc::string ValidateServiceConfigJSON(const grpc::string& service_config_json);
+}  // namespace experimental
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SUPPORT_VALIDATE_SERVICE_CONFIG_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backend_metric.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backend_metric.h
new file mode 100644
index 0000000..d92b76c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backend_metric.h	
@@ -0,0 +1,36 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/gprpp/arena.h"
+
+namespace grpc_core {
+
+// Parses the serialized load report and allocates a BackendMetricData
+// object on the arena.
+const LoadBalancingPolicy::BackendMetricData* ParseBackendMetricData(
+    const grpc_slice& serialized_load_report, Arena* arena);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backup_poller.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backup_poller.h
new file mode 100644
index 0000000..b412081
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/backup_poller.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_INT32(grpc_client_channel_backup_poll_interval_ms);
+
+/* Initializes backup polling. */
+void grpc_client_channel_global_init_backup_polling();
+
+/* Starts polling \a interested_parties periodically in the timer thread. */
+void grpc_client_channel_start_backup_polling(
+    grpc_pollset_set* interested_parties);
+
+/* Stops polling \a interested_parties. */
+void grpc_client_channel_stop_backup_polling(
+    grpc_pollset_set* interested_parties);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel.h
new file mode 100644
index 0000000..2ba2b87
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/client_channel_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+extern grpc_core::TraceFlag grpc_client_channel_trace;
+
+// Channel arg key for server URI string.
+#define GRPC_ARG_SERVER_URI "grpc.server_uri"
+
+/* A client channel is a channel that begins disconnected, and can connect
+   to some endpoint on demand. If that endpoint disconnects, it will be
+   connected to again later.
+
+   Calls on a disconnected client channel are queued until a connection is
+   established. */
+
+extern const grpc_channel_filter grpc_client_channel_filter;
+
+grpc_connectivity_state grpc_client_channel_check_connectivity_state(
+    grpc_channel_element* elem, int try_to_connect);
+
+int grpc_client_channel_num_external_connectivity_watchers(
+    grpc_channel_element* elem);
+
+// Starts a one-time connectivity state watch.  When the channel's state
+// becomes different from *state, sets *state to the new state and
+// schedules on_complete.  The watcher_timer_init callback is invoked as
+// soon as the watch is actually started (i.e., after hopping into the
+// client channel combiner).  I/O will be serviced via pollent.
+//
+// This is intended to be used when starting a watch from outside of C-core
+// via grpc_channel_watch_connectivity_state().  It should not be used
+// by other callers.
+void grpc_client_channel_watch_connectivity_state(
+    grpc_channel_element* elem, grpc_polling_entity pollent,
+    grpc_connectivity_state* state, grpc_closure* on_complete,
+    grpc_closure* watcher_timer_init);
+
+// Starts and stops a connectivity watch.  The watcher will be initially
+// notified as soon as the state changes from initial_state and then on
+// every subsequent state change until either the watch is stopped or
+// it is notified that the state has changed to SHUTDOWN.
+//
+// This is intended to be used when starting watches from code inside of
+// C-core (e.g., for a nested control plane channel for things like xds).
+void grpc_client_channel_start_connectivity_watch(
+    grpc_channel_element* elem, grpc_connectivity_state initial_state,
+    grpc_core::OrphanablePtr<grpc_core::AsyncConnectivityStateWatcherInterface>
+        watcher);
+void grpc_client_channel_stop_connectivity_watch(
+    grpc_channel_element* elem,
+    grpc_core::AsyncConnectivityStateWatcherInterface* watcher);
+
+/* Debug helper: pull the subchannel call from a call stack element */
+grpc_core::RefCountedPtr<grpc_core::SubchannelCall>
+grpc_client_channel_get_subchannel_call(grpc_call_element* elem);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_channelz.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_channelz.h
new file mode 100644
index 0000000..c29569a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_channelz.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+
+namespace grpc_core {
+
+class Subchannel;
+
+namespace channelz {
+
+class SubchannelNode : public BaseNode {
+ public:
+  SubchannelNode(std::string target_address, size_t channel_tracer_max_nodes);
+  ~SubchannelNode() override;
+
+  // Sets the subchannel's connectivity state without health checking.
+  void UpdateConnectivityState(grpc_connectivity_state state);
+
+  // Used when the subchannel's child socket changes. This should be set when
+  // the subchannel's transport is created and set to nullptr when the
+  // subchannel unrefs the transport.
+  void SetChildSocket(RefCountedPtr<SocketNode> socket);
+
+  Json RenderJson() override;
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+ private:
+  Atomic<grpc_connectivity_state> connectivity_state_{GRPC_CHANNEL_IDLE};
+  Mutex socket_mu_;
+  RefCountedPtr<SocketNode> child_socket_;
+  std::string target_;
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_factory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_factory.h
new file mode 100644
index 0000000..79797bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/client_channel_factory.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+namespace grpc_core {
+
+class ClientChannelFactory {
+ public:
+  virtual ~ClientChannelFactory() = default;
+
+  // Creates a subchannel with the specified args.
+  virtual Subchannel* CreateSubchannel(const grpc_channel_args* args) = 0;
+
+  // Returns a channel arg containing the specified factory.
+  static grpc_arg CreateChannelArg(ClientChannelFactory* factory);
+
+  // Returns the factory from args, or null if not found.
+  static ClientChannelFactory* GetFromChannelArgs(
+      const grpc_channel_args* args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/connector.h
new file mode 100644
index 0000000..2564714
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/connector.h	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/transport/transport.h"
+
+namespace grpc_core {
+
+// Interface for connection-establishment functionality.
+// Each transport that supports client channels (e.g., not inproc) must
+// supply an implementation of this.
+class SubchannelConnector : public InternallyRefCounted<SubchannelConnector> {
+ public:
+  struct Args {
+    // Set of pollsets interested in this connection.
+    grpc_pollset_set* interested_parties;
+    // Deadline for connection.
+    grpc_millis deadline;
+    // Channel args to be passed to handshakers and transport.
+    const grpc_channel_args* channel_args;
+  };
+
+  struct Result {
+    // The connected transport.
+    grpc_transport* transport = nullptr;
+    // Channel args to be passed to filters.
+    const grpc_channel_args* channel_args = nullptr;
+    // Channelz socket node of the connected transport, if any.
+    RefCountedPtr<channelz::SocketNode> socket_node;
+
+    void Reset() {
+      transport = nullptr;
+      channel_args = nullptr;
+      socket_node.reset();
+    }
+  };
+
+  // Attempts to connect.
+  // When complete, populates *result and invokes notify.
+  // Only one connection attempt may be in progress at any one time.
+  virtual void Connect(const Args& args, Result* result,
+                       grpc_closure* notify) = 0;
+
+  // Cancels any in-flight connection attempt and shuts down the
+  // connector.
+  virtual void Shutdown(grpc_error* error) = 0;
+
+  void Orphan() override {
+    Shutdown(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Subchannel disconnected"));
+    Unref();
+  }
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/global_subchannel_pool.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/global_subchannel_pool.h
new file mode 100644
index 0000000..96dc8d7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/global_subchannel_pool.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+
+namespace grpc_core {
+
+// The global subchannel pool. It shares subchannels among channels. There
+// should be only one instance of this class. Init() should be called once at
+// the filter initialization time; Shutdown() should be called once at the
+// filter shutdown time.
+// TODO(juanlishen): Enable subchannel retention.
+class GlobalSubchannelPool final : public SubchannelPoolInterface {
+ public:
+  // The ctor and dtor are not intended to use directly.
+  GlobalSubchannelPool();
+  ~GlobalSubchannelPool() override;
+
+  // Should be called exactly once at filter initialization time.
+  static void Init();
+  // Should be called exactly once at filter shutdown time.
+  static void Shutdown();
+
+  // Gets the singleton instance.
+  static RefCountedPtr<GlobalSubchannelPool> instance();
+
+  // Implements interface methods.
+  Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                 Subchannel* constructed) override;
+  void UnregisterSubchannel(SubchannelKey* key) override;
+  Subchannel* FindSubchannel(SubchannelKey* key) override;
+
+ private:
+  // The singleton instance. (It's a pointer to RefCountedPtr so that this
+  // non-local static object can be trivially destructible.)
+  static RefCountedPtr<GlobalSubchannelPool>* instance_;
+
+  // The vtable for subchannel operations in an AVL tree.
+  static const grpc_avl_vtable subchannel_avl_vtable_;
+  // A map from subchannel key to subchannel.
+  grpc_avl subchannel_map_;
+  // To protect subchannel_map_.
+  gpr_mu mu_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/health/health_check_client.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/health/health_check_client.h
new file mode 100644
index 0000000..f8b9ade
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/health/health_check_client.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/transport.h"
+
+namespace grpc_core {
+
+class HealthCheckClient : public InternallyRefCounted<HealthCheckClient> {
+ public:
+  HealthCheckClient(const char* service_name,
+                    RefCountedPtr<ConnectedSubchannel> connected_subchannel,
+                    grpc_pollset_set* interested_parties,
+                    RefCountedPtr<channelz::SubchannelNode> channelz_node,
+                    RefCountedPtr<ConnectivityStateWatcherInterface> watcher);
+
+  ~HealthCheckClient();
+
+  void Orphan() override;
+
+ private:
+  // Contains a call to the backend and all the data related to the call.
+  class CallState : public Orphanable {
+   public:
+    CallState(RefCountedPtr<HealthCheckClient> health_check_client,
+              grpc_pollset_set* interested_parties_);
+    ~CallState();
+
+    void Orphan() override;
+
+    void StartCall();
+
+   private:
+    void Cancel();
+
+    void StartBatch(grpc_transport_stream_op_batch* batch);
+    static void StartBatchInCallCombiner(void* arg, grpc_error* error);
+
+    static void CallEndedRetry(void* arg, grpc_error* error);
+    void CallEnded(bool retry);
+
+    static void OnComplete(void* arg, grpc_error* error);
+    static void RecvInitialMetadataReady(void* arg, grpc_error* error);
+    static void RecvMessageReady(void* arg, grpc_error* error);
+    static void RecvTrailingMetadataReady(void* arg, grpc_error* error);
+    static void StartCancel(void* arg, grpc_error* error);
+    static void OnCancelComplete(void* arg, grpc_error* error);
+
+    static void OnByteStreamNext(void* arg, grpc_error* error);
+    void ContinueReadingRecvMessage();
+    grpc_error* PullSliceFromRecvMessage();
+    void DoneReadingRecvMessage(grpc_error* error);
+
+    static void AfterCallStackDestruction(void* arg, grpc_error* error);
+
+    RefCountedPtr<HealthCheckClient> health_check_client_;
+    grpc_polling_entity pollent_;
+
+    Arena* arena_;
+    grpc_core::CallCombiner call_combiner_;
+    grpc_call_context_element context_[GRPC_CONTEXT_COUNT] = {};
+
+    // The streaming call to the backend. Always non-null.
+    // Refs are tracked manually; when the last ref is released, the
+    // CallState object will be automatically destroyed.
+    SubchannelCall* call_;
+
+    grpc_transport_stream_op_batch_payload payload_;
+    grpc_transport_stream_op_batch batch_;
+    grpc_transport_stream_op_batch recv_message_batch_;
+    grpc_transport_stream_op_batch recv_trailing_metadata_batch_;
+
+    grpc_closure on_complete_;
+
+    // send_initial_metadata
+    grpc_metadata_batch send_initial_metadata_;
+    grpc_linked_mdelem path_metadata_storage_;
+
+    // send_message
+    ManualConstructor<SliceBufferByteStream> send_message_;
+
+    // send_trailing_metadata
+    grpc_metadata_batch send_trailing_metadata_;
+
+    // recv_initial_metadata
+    grpc_metadata_batch recv_initial_metadata_;
+    grpc_closure recv_initial_metadata_ready_;
+
+    // recv_message
+    OrphanablePtr<ByteStream> recv_message_;
+    grpc_closure recv_message_ready_;
+    grpc_slice_buffer recv_message_buffer_;
+    Atomic<bool> seen_response_{false};
+
+    // recv_trailing_metadata
+    grpc_metadata_batch recv_trailing_metadata_;
+    grpc_transport_stream_stats collect_stats_;
+    grpc_closure recv_trailing_metadata_ready_;
+
+    // True if the cancel_stream batch has been started.
+    Atomic<bool> cancelled_{false};
+
+    // Closure for call stack destruction.
+    grpc_closure after_call_stack_destruction_;
+  };
+
+  void StartCall();
+  void StartCallLocked();  // Requires holding mu_.
+
+  void StartRetryTimer();
+  static void OnRetryTimer(void* arg, grpc_error* error);
+
+  void SetHealthStatus(grpc_connectivity_state state, const char* reason);
+  void SetHealthStatusLocked(grpc_connectivity_state state,
+                             const char* reason);  // Requires holding mu_.
+
+  const char* service_name_;  // Do not own.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  grpc_pollset_set* interested_parties_;  // Do not own.
+  RefCountedPtr<channelz::SubchannelNode> channelz_node_;
+
+  Mutex mu_;
+  RefCountedPtr<ConnectivityStateWatcherInterface> watcher_;
+  bool shutting_down_ = false;
+
+  // The data associated with the current health check call.  It holds a ref
+  // to this HealthCheckClient object.
+  OrphanablePtr<CallState> call_state_;
+
+  // Call retry state.
+  BackOff retry_backoff_;
+  grpc_timer retry_timer_;
+  grpc_closure retry_timer_callback_;
+  bool retry_timer_callback_pending_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_connect_handshaker.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_connect_handshaker.h
new file mode 100644
index 0000000..26c31f2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_connect_handshaker.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
+
+/// Channel arg indicating the server in HTTP CONNECT request (string).
+/// The presence of this arg triggers the use of HTTP CONNECT.
+#define GRPC_ARG_HTTP_CONNECT_SERVER "grpc.http_connect_server"
+
+/// Channel arg indicating HTTP CONNECT headers (string).
+/// Multiple headers are separated by newlines.  Key/value pairs are
+/// separated by colons.
+#define GRPC_ARG_HTTP_CONNECT_HEADERS "grpc.http_connect_headers"
+
+/// Registers handshaker factory.
+void grpc_http_connect_register_handshaker_factory();
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_proxy.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_proxy.h
new file mode 100644
index 0000000..cecdaf8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/http_proxy.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H
+
+namespace grpc_core {
+
+void RegisterHttpProxyMapper();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy.h
new file mode 100644
index 0000000..7e9c206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy.h	
@@ -0,0 +1,412 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <functional>
+#include <iterator>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/subchannel_interface.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_trace_lb_policy_refcount;
+
+/// Interface for load balancing policies.
+///
+/// The following concepts are used here:
+///
+/// Channel: An abstraction that manages connections to backend servers
+///   on behalf of a client application.  The application creates a channel
+///   for a given server name and then sends calls (RPCs) on it, and the
+///   channel figures out which backend server to send each call to.  A channel
+///   contains a resolver, a load balancing policy (or a tree of LB policies),
+///   and a set of one or more subchannels.
+///
+/// Subchannel: A subchannel represents a connection to one backend server.
+///   The LB policy decides which subchannels to create, manages the
+///   connectivity state of those subchannels, and decides which subchannel
+///   to send any given call to.
+///
+/// Resolver: A plugin that takes a gRPC server URI and resolves it to a
+///   list of one or more addresses and a service config, as described
+///   in https://github.com/grpc/grpc/blob/master/doc/naming.md.  See
+///   resolver.h for the resolver API.
+///
+/// Load Balancing (LB) Policy: A plugin that takes a list of addresses
+///   from the resolver, maintains and manages a subchannel for each
+///   backend address, and decides which subchannel to send each call on.
+///   An LB policy has two parts:
+///   - A LoadBalancingPolicy, which deals with the control plane work of
+///     managing subchannels.
+///   - A SubchannelPicker, which handles the data plane work of
+///     determining which subchannel a given call should be sent on.
+
+/// LoadBalacingPolicy API.
+///
+/// Note: All methods with a "Locked" suffix must be called from the
+/// combiner passed to the constructor.
+///
+/// Any I/O done by the LB policy should be done under the pollset_set
+/// returned by \a interested_parties().
+// TODO(roth): Once we move to EventManager-based polling, remove the
+// interested_parties() hooks from the API.
+class LoadBalancingPolicy : public InternallyRefCounted<LoadBalancingPolicy> {
+ public:
+  // Represents backend metrics reported by the backend to the client.
+  struct BackendMetricData {
+    /// CPU utilization expressed as a fraction of available CPU resources.
+    double cpu_utilization;
+    /// Memory utilization expressed as a fraction of available memory
+    /// resources.
+    double mem_utilization;
+    /// Total requests per second being served by the backend.  This
+    /// should include all services that a backend is responsible for.
+    uint64_t requests_per_second;
+    /// Application-specific requests cost metrics.  Metric names are
+    /// determined by the application.  Each value is an absolute cost
+    /// (e.g. 3487 bytes of storage) associated with the request.
+    std::map<StringView, double, StringLess> request_cost;
+    /// Application-specific resource utilization metrics.  Metric names
+    /// are determined by the application.  Each value is expressed as a
+    /// fraction of total resources available.
+    std::map<StringView, double, StringLess> utilization;
+  };
+
+  /// Interface for accessing per-call state.
+  /// Implemented by the client channel and used by the SubchannelPicker.
+  class CallState {
+   public:
+    CallState() = default;
+    virtual ~CallState() = default;
+
+    /// Allocates memory associated with the call, which will be
+    /// automatically freed when the call is complete.
+    /// It is more efficient to use this than to allocate memory directly
+    /// for allocations that need to be made on a per-call basis.
+    virtual void* Alloc(size_t size) = 0;
+
+    /// Returns the backend metric data returned by the server for the call,
+    /// or null if no backend metric data was returned.
+    virtual const BackendMetricData* GetBackendMetricData() = 0;
+  };
+
+  /// Interface for accessing metadata.
+  /// Implemented by the client channel and used by the SubchannelPicker.
+  class MetadataInterface {
+   public:
+    class iterator
+        : public std::iterator<std::input_iterator_tag,
+                               std::pair<StringView, StringView>,  // value_type
+                               std::ptrdiff_t,  // difference_type
+                               std::pair<StringView, StringView>*,  // pointer
+                               std::pair<StringView, StringView>&   // reference
+                               > {
+     public:
+      iterator(const MetadataInterface* md, intptr_t handle)
+          : md_(md), handle_(handle) {}
+      iterator& operator++() {
+        handle_ = md_->IteratorHandleNext(handle_);
+        return *this;
+      }
+      bool operator==(iterator other) const {
+        return md_ == other.md_ && handle_ == other.handle_;
+      }
+      bool operator!=(iterator other) const { return !(*this == other); }
+      value_type operator*() const { return md_->IteratorHandleGet(handle_); }
+
+     private:
+      friend class MetadataInterface;
+      const MetadataInterface* md_;
+      intptr_t handle_;
+    };
+
+    virtual ~MetadataInterface() = default;
+
+    /// Adds a key/value pair.
+    /// Does NOT take ownership of \a key or \a value.
+    /// Implementations must ensure that the key and value remain alive
+    /// until the call ends.  If desired, they may be allocated via
+    /// CallState::Alloc().
+    virtual void Add(StringView key, StringView value) = 0;
+
+    /// Iteration interface.
+    virtual iterator begin() const = 0;
+    virtual iterator end() const = 0;
+
+    /// Removes the element pointed to by \a it.
+    /// Returns an iterator pointing to the next element.
+    virtual iterator erase(iterator it) = 0;
+
+   protected:
+    intptr_t GetIteratorHandle(const iterator& it) const { return it.handle_; }
+
+   private:
+    friend class iterator;
+
+    virtual intptr_t IteratorHandleNext(intptr_t handle) const = 0;
+    virtual std::pair<StringView /*key*/, StringView /*value */>
+    IteratorHandleGet(intptr_t handle) const = 0;
+  };
+
+  /// Arguments used when picking a subchannel for a call.
+  struct PickArgs {
+    /// Initial metadata associated with the picking call.
+    /// The LB policy may use the existing metadata to influence its routing
+    /// decision, and it may add new metadata elements to be sent with the
+    /// call to the chosen backend.
+    MetadataInterface* initial_metadata;
+    /// An interface for accessing call state.  Can be used to allocate
+    /// data associated with the call in an efficient way.
+    CallState* call_state;
+  };
+
+  /// The result of picking a subchannel for a call.
+  struct PickResult {
+    enum ResultType {
+      /// Pick complete.  If \a subchannel is non-null, the client channel
+      /// will immediately proceed with the call on that subchannel;
+      /// otherwise, it will drop the call.
+      PICK_COMPLETE,
+      /// Pick cannot be completed until something changes on the control
+      /// plane.  The client channel will queue the pick and try again the
+      /// next time the picker is updated.
+      PICK_QUEUE,
+      /// Pick failed.  If the call is wait_for_ready, the client channel
+      /// will wait for the next picker and try again; otherwise, it
+      /// will immediately fail the call with the status indicated via
+      /// \a error (although the call may be retried if the client channel
+      /// is configured to do so).
+      PICK_FAILED,
+    };
+    ResultType type;
+
+    /// Used only if type is PICK_COMPLETE.  Will be set to the selected
+    /// subchannel, or nullptr if the LB policy decides to drop the call.
+    RefCountedPtr<SubchannelInterface> subchannel;
+
+    /// Used only if type is PICK_FAILED.
+    /// Error to be set when returning a failure.
+    // TODO(roth): Replace this with something similar to grpc::Status,
+    // so that we don't expose grpc_error to this API.
+    grpc_error* error = GRPC_ERROR_NONE;
+
+    /// Used only if type is PICK_COMPLETE.
+    /// Callback set by LB policy to be notified of trailing metadata.
+    /// If set by LB policy, the client channel will invoke the callback
+    /// when trailing metadata is returned.
+    /// The metadata may be modified by the callback.  However, the callback
+    /// does not take ownership, so any data that needs to be used after
+    /// returning must be copied.
+    /// The call state can be used to obtain backend metric data.
+    std::function<void(grpc_error*, MetadataInterface*, CallState*)>
+        recv_trailing_metadata_ready;
+  };
+
+  /// A subchannel picker is the object used to pick the subchannel to
+  /// use for a given call.  This is implemented by the LB policy and
+  /// used by the client channel to perform picks.
+  ///
+  /// Pickers are intended to encapsulate all of the state and logic
+  /// needed on the data plane (i.e., to actually process picks for
+  /// individual calls sent on the channel) while excluding all of the
+  /// state and logic needed on the control plane (i.e., resolver
+  /// updates, connectivity state notifications, etc); the latter should
+  /// live in the LB policy object itself.
+  ///
+  /// Currently, pickers are always accessed from within the
+  /// client_channel data plane combiner, so they do not have to be
+  /// thread-safe.
+  class SubchannelPicker {
+   public:
+    SubchannelPicker() = default;
+    virtual ~SubchannelPicker() = default;
+
+    virtual PickResult Pick(PickArgs args) = 0;
+  };
+
+  /// A proxy object implemented by the client channel and used by the
+  /// LB policy to communicate with the channel.
+  // TODO(juanlishen): Consider adding a mid-layer subclass that helps handle
+  // things like swapping in pending policy when it's ready. Currently, we are
+  // duplicating the logic in many subclasses.
+  class ChannelControlHelper {
+   public:
+    ChannelControlHelper() = default;
+    virtual ~ChannelControlHelper() = default;
+
+    /// Creates a new subchannel with the specified channel args.
+    virtual RefCountedPtr<SubchannelInterface> CreateSubchannel(
+        const grpc_channel_args& args) = 0;
+
+    /// Sets the connectivity state and returns a new picker to be used
+    /// by the client channel.
+    virtual void UpdateState(grpc_connectivity_state state,
+                             std::unique_ptr<SubchannelPicker>) = 0;
+
+    /// Requests that the resolver re-resolve.
+    virtual void RequestReresolution() = 0;
+
+    /// Adds a trace message associated with the channel.
+    enum TraceSeverity { TRACE_INFO, TRACE_WARNING, TRACE_ERROR };
+    virtual void AddTraceEvent(TraceSeverity severity, StringView message) = 0;
+  };
+
+  /// Interface for configuration data used by an LB policy implementation.
+  /// Individual implementations will create a subclass that adds methods to
+  /// return the parameters they need.
+  class Config : public RefCounted<Config> {
+   public:
+    virtual ~Config() = default;
+
+    // Returns the load balancing policy name
+    virtual const char* name() const = 0;
+  };
+
+  /// Data passed to the UpdateLocked() method when new addresses and
+  /// config are available.
+  struct UpdateArgs {
+    ServerAddressList addresses;
+    RefCountedPtr<Config> config;
+    const grpc_channel_args* args = nullptr;
+
+    // TODO(roth): Remove everything below once channel args is
+    // converted to a copyable and movable C++ object.
+    UpdateArgs() = default;
+    ~UpdateArgs() { grpc_channel_args_destroy(args); }
+    UpdateArgs(const UpdateArgs& other);
+    UpdateArgs(UpdateArgs&& other);
+    UpdateArgs& operator=(const UpdateArgs& other);
+    UpdateArgs& operator=(UpdateArgs&& other);
+  };
+
+  /// Args used to instantiate an LB policy.
+  struct Args {
+    /// The combiner under which all LB policy calls will be run.
+    /// Policy does NOT take ownership of the reference to the combiner.
+    // TODO(roth): Once we have a C++-like interface for combiners, this
+    // API should change to take a smart pointer that does pass ownership
+    // of a reference.
+    Combiner* combiner = nullptr;
+    /// Channel control helper.
+    /// Note: LB policies MUST NOT call any method on the helper from
+    /// their constructor.
+    std::unique_ptr<ChannelControlHelper> channel_control_helper;
+    /// Channel args.
+    // TODO(roth): Find a better channel args representation for this API.
+    // TODO(roth): Clarify ownership semantics here -- currently, this
+    // does not take ownership of args, which is the opposite of how we
+    // handle them in UpdateArgs.
+    const grpc_channel_args* args = nullptr;
+  };
+
+  explicit LoadBalancingPolicy(Args args, intptr_t initial_refcount = 1);
+  virtual ~LoadBalancingPolicy();
+
+  // Not copyable nor movable.
+  LoadBalancingPolicy(const LoadBalancingPolicy&) = delete;
+  LoadBalancingPolicy& operator=(const LoadBalancingPolicy&) = delete;
+
+  /// Returns the name of the LB policy.
+  virtual const char* name() const = 0;
+
+  /// Updates the policy with new data from the resolver.  Will be invoked
+  /// immediately after LB policy is constructed, and then again whenever
+  /// the resolver returns a new result.
+  virtual void UpdateLocked(UpdateArgs) = 0;  // NOLINT
+
+  /// Tries to enter a READY connectivity state.
+  /// This is a no-op by default, since most LB policies never go into
+  /// IDLE state.
+  virtual void ExitIdleLocked() {}
+
+  /// Resets connection backoff.
+  virtual void ResetBackoffLocked() = 0;
+
+  grpc_pollset_set* interested_parties() const { return interested_parties_; }
+
+  // Note: This must be invoked while holding the combiner.
+  void Orphan() override;
+
+  // A picker that returns PICK_QUEUE for all picks.
+  // Also calls the parent LB policy's ExitIdleLocked() method when the
+  // first pick is seen.
+  class QueuePicker : public SubchannelPicker {
+   public:
+    explicit QueuePicker(RefCountedPtr<LoadBalancingPolicy> parent)
+        : parent_(std::move(parent)) {}
+
+    ~QueuePicker() { parent_.reset(DEBUG_LOCATION, "QueuePicker"); }
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    static void CallExitIdle(void* arg, grpc_error* error);
+
+    RefCountedPtr<LoadBalancingPolicy> parent_;
+    bool exit_idle_called_ = false;
+  };
+
+  // A picker that returns PICK_TRANSIENT_FAILURE for all picks.
+  class TransientFailurePicker : public SubchannelPicker {
+   public:
+    explicit TransientFailurePicker(grpc_error* error) : error_(error) {}
+    ~TransientFailurePicker() override { GRPC_ERROR_UNREF(error_); }
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    grpc_error* error_;
+  };
+
+ protected:
+  Combiner* combiner() const { return combiner_; }
+
+  // Note: LB policies MUST NOT call any method on the helper from their
+  // constructor.
+  ChannelControlHelper* channel_control_helper() const {
+    return channel_control_helper_.get();
+  }
+
+  /// Shuts down the policy.
+  virtual void ShutdownLocked() = 0;
+
+ private:
+  /// Combiner under which LB policy actions take place.
+  Combiner* combiner_;
+  /// Owned pointer to interested parties in load balancing decisions.
+  grpc_pollset_set* interested_parties_;
+  /// Channel control helper.
+  std::unique_ptr<ChannelControlHelper> channel_control_helper_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h
new file mode 100644
index 0000000..d67f326
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h	
@@ -0,0 +1,83 @@
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+// A class that makes it easy to gracefully switch child policies.
+//
+// Callers should instantiate this instead of using
+// LoadBalancingPolicyRegistry::CreateLoadBalancingPolicy().  Once
+// instantiated, this object will automatically take care of
+// constructing the child policy as needed upon receiving an update.
+class ChildPolicyHandler : public LoadBalancingPolicy {
+ public:
+  ChildPolicyHandler(Args args, TraceFlag* tracer)
+      : LoadBalancingPolicy(std::move(args)), tracer_(tracer) {}
+
+  virtual const char* name() const override { return "child_policy_handler"; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ExitIdleLocked() override;
+  void ResetBackoffLocked() override;
+
+  // Returns true if transitioning from the old config to the new config
+  // requires instantiating a new policy object.
+  virtual bool ConfigChangeRequiresNewPolicyInstance(
+      LoadBalancingPolicy::Config* old_config,
+      LoadBalancingPolicy::Config* new_config) const;
+
+  // Instantiates a new policy of the specified name.
+  // May be overridden by subclasses to avoid recursion when an LB
+  // policy factory returns a ChildPolicyHandler.
+  virtual OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      const char* name, LoadBalancingPolicy::Args args) const;
+
+ private:
+  class Helper;
+
+  void ShutdownLocked() override;
+
+  OrphanablePtr<LoadBalancingPolicy> CreateChildPolicy(
+      const char* child_policy_name, const grpc_channel_args& args);
+
+  // Passed in from caller at construction time.
+  TraceFlag* tracer_;
+
+  bool shutting_down_ = false;
+
+  // The most recent config passed to UpdateLocked().
+  // If pending_child_policy_ is non-null, this is the config passed to
+  // pending_child_policy_; otherwise, it's the config passed to child_policy_.
+  RefCountedPtr<LoadBalancingPolicy::Config> current_config_;
+
+  // Child LB policy.
+  OrphanablePtr<LoadBalancingPolicy> child_policy_;
+  OrphanablePtr<LoadBalancingPolicy> pending_child_policy_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h
new file mode 100644
index 0000000..838e2ef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_client_load_reporting_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h
new file mode 100644
index 0000000..a032b5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H
+
+#include <grpc/support/port_platform.h>
+
+/** Channel arg indicating if a target corresponding to the address is grpclb
+ * loadbalancer. The type of this arg is an integer and the value is treated as
+ * a bool. */
+#define GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER \
+  "grpc.address_is_grpclb_load_balancer"
+/** Channel arg indicating if a target corresponding to the address is a backend
+ * received from a balancer. The type of this arg is an integer and the value is
+ * treated as a bool. */
+#define GRPC_ARG_ADDRESS_IS_BACKEND_FROM_GRPCLB_LOAD_BALANCER \
+  "grpc.address_is_backend_from_grpclb_load_balancer"
+
+namespace grpc_core {
+
+extern const char kGrpcLbClientStatsMetadataKey[];
+extern const char kGrpcLbLbTokenMetadataKey[];
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h
new file mode 100644
index 0000000..1458233
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+
+namespace grpc_core {
+
+/// Makes any necessary modifications to \a args for use in the grpclb
+/// balancer channel.
+///
+/// Takes ownership of \a args.
+///
+/// Caller takes ownership of the returned args.
+grpc_channel_args* ModifyGrpclbBalancerChannelArgs(
+    const ServerAddressList& addresses, grpc_channel_args* args);
+
+grpc_channel* CreateGrpclbBalancerChannel(const char* target_uri,
+                                          const grpc_channel_args& args);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h
new file mode 100644
index 0000000..4b1c004
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h	
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+
+class GrpcLbClientStats : public RefCounted<GrpcLbClientStats> {
+ public:
+  struct DropTokenCount {
+    grpc_core::UniquePtr<char> token;
+    int64_t count;
+
+    DropTokenCount(grpc_core::UniquePtr<char> token, int64_t count)
+        : token(std::move(token)), count(count) {}
+  };
+
+  typedef InlinedVector<DropTokenCount, 10> DroppedCallCounts;
+
+  void AddCallStarted();
+  void AddCallFinished(bool finished_with_client_failed_to_send,
+                       bool finished_known_received);
+
+  void AddCallDropped(const char* token);
+
+  void Get(int64_t* num_calls_started, int64_t* num_calls_finished,
+           int64_t* num_calls_finished_with_client_failed_to_send,
+           int64_t* num_calls_finished_known_received,
+           std::unique_ptr<DroppedCallCounts>* drop_token_counts);
+
+  // A destruction function to use as the user_data key when attaching
+  // client stats to a grpc_mdelem.
+  static void Destroy(void* arg) {
+    static_cast<GrpcLbClientStats*>(arg)->Unref();
+  }
+
+ private:
+  gpr_atm num_calls_started_ = 0;
+  gpr_atm num_calls_finished_ = 0;
+  gpr_atm num_calls_finished_with_client_failed_to_send_ = 0;
+  gpr_atm num_calls_finished_known_received_ = 0;
+  Mutex drop_count_mu_;  // Guards drop_token_counts_.
+  std::unique_ptr<DroppedCallCounts> drop_token_counts_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h
new file mode 100644
index 0000000..f46ca18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <vector>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h"
+#else
+  #include  "src/proto/grpc/lb/v1/load_balancer.upb.h"
+#endif
+
+#define GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH 128
+#define GRPC_GRPCLB_SERVER_IP_ADDRESS_MAX_SIZE 16
+#define GRPC_GRPCLB_SERVER_LOAD_BALANCE_TOKEN_MAX_SIZE 50
+
+namespace grpc_core {
+
+// Contains server information. When the drop field is not true, use the other
+// fields.
+struct GrpcLbServer {
+  int32_t ip_size;
+  char ip_addr[GRPC_GRPCLB_SERVER_IP_ADDRESS_MAX_SIZE];
+  int32_t port;
+  char load_balance_token[GRPC_GRPCLB_SERVER_LOAD_BALANCE_TOKEN_MAX_SIZE];
+  bool drop;
+
+  bool operator==(const GrpcLbServer& other) const;
+};
+
+struct GrpcLbResponse {
+  enum { INITIAL, SERVERLIST, FALLBACK } type;
+  grpc_millis client_stats_report_interval = 0;
+  std::vector<GrpcLbServer> serverlist;
+};
+
+// Creates a serialized grpclb request.
+grpc_slice GrpcLbRequestCreate(const char* lb_service_name, upb_arena* arena);
+
+// Creates a serialized grpclb load report request.
+grpc_slice GrpcLbLoadReportRequestCreate(
+    int64_t num_calls_started, int64_t num_calls_finished,
+    int64_t num_calls_finished_with_client_failed_to_send,
+    int64_t num_calls_finished_known_received,
+    const GrpcLbClientStats::DroppedCallCounts* drop_token_counts,
+    upb_arena* arena);
+
+// Deserialize a grpclb response.
+bool GrpcLbResponseParse(const grpc_slice& serialized_response,
+                         upb_arena* arena, GrpcLbResponse* response);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h
new file mode 100644
index 0000000..4932a68
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h	
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+// TODO(roth): Should not need the include of subchannel.h here, since
+// that implementation should be hidden from the LB policy API.
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/filters/client_channel/subchannel_interface.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+// Code for maintaining a list of subchannels within an LB policy.
+//
+// To use this, callers must create their own subclasses, like so:
+/*
+
+class MySubchannelList;  // Forward declaration.
+
+class MySubchannelData
+    : public SubchannelData<MySubchannelList, MySubchannelData> {
+ public:
+  void ProcessConnectivityChangeLocked(
+      grpc_connectivity_state connectivity_state) override {
+    // ...code to handle connectivity changes...
+  }
+};
+
+class MySubchannelList
+    : public SubchannelList<MySubchannelList, MySubchannelData> {
+};
+
+*/
+// All methods will be called from within the client_channel combiner.
+
+namespace grpc_core {
+
+// Forward declaration.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelList;
+
+// Stores data for a particular subchannel in a subchannel list.
+// Callers must create a subclass that implements the
+// ProcessConnectivityChangeLocked() method.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelData {
+ public:
+  // Returns a pointer to the subchannel list containing this object.
+  SubchannelListType* subchannel_list() const {
+    return static_cast<SubchannelListType*>(subchannel_list_);
+  }
+
+  // Returns the index into the subchannel list of this object.
+  size_t Index() const {
+    return static_cast<size_t>(static_cast<const SubchannelDataType*>(this) -
+                               subchannel_list_->subchannel(0));
+  }
+
+  // Returns a pointer to the subchannel.
+  SubchannelInterface* subchannel() const { return subchannel_.get(); }
+
+  // Synchronously checks the subchannel's connectivity state.
+  // Must not be called while there is a connectivity notification
+  // pending (i.e., between calling StartConnectivityWatchLocked() and
+  // calling CancelConnectivityWatchLocked()).
+  grpc_connectivity_state CheckConnectivityStateLocked() {
+    GPR_ASSERT(pending_watcher_ == nullptr);
+    connectivity_state_ = subchannel_->CheckConnectivityState();
+    return connectivity_state_;
+  }
+
+  // Resets the connection backoff.
+  // TODO(roth): This method should go away when we move the backoff
+  // code out of the subchannel and into the LB policies.
+  void ResetBackoffLocked();
+
+  // Starts watching the connectivity state of the subchannel.
+  // ProcessConnectivityChangeLocked() will be called whenever the
+  // connectivity state changes.
+  void StartConnectivityWatchLocked();
+
+  // Cancels watching the connectivity state of the subchannel.
+  void CancelConnectivityWatchLocked(const char* reason);
+
+  // Cancels any pending connectivity watch and unrefs the subchannel.
+  void ShutdownLocked();
+
+ protected:
+  SubchannelData(
+      SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list,
+      const ServerAddress& address,
+      RefCountedPtr<SubchannelInterface> subchannel);
+
+  virtual ~SubchannelData();
+
+  // After StartConnectivityWatchLocked() is called, this method will be
+  // invoked whenever the subchannel's connectivity state changes.
+  // To stop watching, use CancelConnectivityWatchLocked().
+  virtual void ProcessConnectivityChangeLocked(
+      grpc_connectivity_state connectivity_state) = 0;
+
+ private:
+  // Watcher for subchannel connectivity state.
+  class Watcher
+      : public SubchannelInterface::ConnectivityStateWatcherInterface {
+   public:
+    Watcher(
+        SubchannelData<SubchannelListType, SubchannelDataType>* subchannel_data,
+        RefCountedPtr<SubchannelListType> subchannel_list)
+        : subchannel_data_(subchannel_data),
+          subchannel_list_(std::move(subchannel_list)) {}
+
+    ~Watcher() { subchannel_list_.reset(DEBUG_LOCATION, "Watcher dtor"); }
+
+    void OnConnectivityStateChange(grpc_connectivity_state new_state) override;
+
+    grpc_pollset_set* interested_parties() override {
+      return subchannel_list_->policy()->interested_parties();
+    }
+
+   private:
+    SubchannelData<SubchannelListType, SubchannelDataType>* subchannel_data_;
+    RefCountedPtr<SubchannelListType> subchannel_list_;
+  };
+
+  // Unrefs the subchannel.
+  void UnrefSubchannelLocked(const char* reason);
+
+  // Backpointer to owning subchannel list.  Not owned.
+  SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list_;
+  // The subchannel.
+  RefCountedPtr<SubchannelInterface> subchannel_;
+  // Will be non-null when the subchannel's state is being watched.
+  SubchannelInterface::ConnectivityStateWatcherInterface* pending_watcher_ =
+      nullptr;
+  // Data updated by the watcher.
+  grpc_connectivity_state connectivity_state_;
+};
+
+// A list of subchannels.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelList : public InternallyRefCounted<SubchannelListType> {
+ public:
+  typedef InlinedVector<SubchannelDataType, 10> SubchannelVector;
+
+  // The number of subchannels in the list.
+  size_t num_subchannels() const { return subchannels_.size(); }
+
+  // The data for the subchannel at a particular index.
+  SubchannelDataType* subchannel(size_t index) { return &subchannels_[index]; }
+
+  // Returns true if the subchannel list is shutting down.
+  bool shutting_down() const { return shutting_down_; }
+
+  // Accessors.
+  LoadBalancingPolicy* policy() const { return policy_; }
+  TraceFlag* tracer() const { return tracer_; }
+
+  // Resets connection backoff of all subchannels.
+  // TODO(roth): We will probably need to rethink this as part of moving
+  // the backoff code out of subchannels and into LB policies.
+  void ResetBackoffLocked();
+
+  void Orphan() override {
+    ShutdownLocked();
+    InternallyRefCounted<SubchannelListType>::Unref(DEBUG_LOCATION, "shutdown");
+  }
+
+ protected:
+  SubchannelList(LoadBalancingPolicy* policy, TraceFlag* tracer,
+                 const ServerAddressList& addresses,
+                 LoadBalancingPolicy::ChannelControlHelper* helper,
+                 const grpc_channel_args& args);
+
+  virtual ~SubchannelList();
+
+ private:
+  // For accessing Ref() and Unref().
+  friend class SubchannelData<SubchannelListType, SubchannelDataType>;
+
+  void ShutdownLocked();
+
+  // Backpointer to owning policy.
+  LoadBalancingPolicy* policy_;
+
+  TraceFlag* tracer_;
+
+  // The list of subchannels.
+  SubchannelVector subchannels_;
+
+  // Is this list shutting down? This may be true due to the shutdown of the
+  // policy itself or because a newer update has arrived while this one hadn't
+  // finished processing.
+  bool shutting_down_ = false;
+};
+
+//
+// implementation -- no user-servicable parts below
+//
+
+//
+// SubchannelData::Watcher
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::Watcher::
+    OnConnectivityStateChange(grpc_connectivity_state new_state) {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): connectivity changed: state=%s, "
+            "shutting_down=%d, pending_watcher=%p",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_.get(), subchannel_data_->Index(),
+            subchannel_list_->num_subchannels(),
+            subchannel_data_->subchannel_.get(),
+            ConnectivityStateName(new_state), subchannel_list_->shutting_down(),
+            subchannel_data_->pending_watcher_);
+  }
+  if (!subchannel_list_->shutting_down() &&
+      subchannel_data_->pending_watcher_ != nullptr) {
+    subchannel_data_->connectivity_state_ = new_state;
+    // Call the subclass's ProcessConnectivityChangeLocked() method.
+    subchannel_data_->ProcessConnectivityChangeLocked(new_state);
+  }
+}
+
+//
+// SubchannelData
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelData<SubchannelListType, SubchannelDataType>::SubchannelData(
+    SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list,
+    const ServerAddress& /*address*/,
+    RefCountedPtr<SubchannelInterface> subchannel)
+    : subchannel_list_(subchannel_list),
+      subchannel_(std::move(subchannel)),
+      // We assume that the current state is IDLE.  If not, we'll get a
+      // callback telling us that.
+      connectivity_state_(GRPC_CHANNEL_IDLE) {}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelData<SubchannelListType, SubchannelDataType>::~SubchannelData() {
+  GPR_ASSERT(subchannel_ == nullptr);
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::
+    UnrefSubchannelLocked(const char* reason) {
+  if (subchannel_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+      gpr_log(GPR_INFO,
+              "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+              " (subchannel %p): unreffing subchannel (%s)",
+              subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+              subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+              subchannel_.get(), reason);
+    }
+    subchannel_.reset();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType,
+                    SubchannelDataType>::ResetBackoffLocked() {
+  if (subchannel_ != nullptr) {
+    subchannel_->ResetBackoff();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType,
+                    SubchannelDataType>::StartConnectivityWatchLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): starting watch (from %s)",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+            subchannel_.get(), ConnectivityStateName(connectivity_state_));
+  }
+  GPR_ASSERT(pending_watcher_ == nullptr);
+  pending_watcher_ =
+      new Watcher(this, subchannel_list()->Ref(DEBUG_LOCATION, "Watcher"));
+  subchannel_->WatchConnectivityState(
+      connectivity_state_,
+      std::unique_ptr<SubchannelInterface::ConnectivityStateWatcherInterface>(
+          pending_watcher_));
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::
+    CancelConnectivityWatchLocked(const char* reason) {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): canceling connectivity watch (%s)",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+            subchannel_.get(), reason);
+  }
+  if (pending_watcher_ != nullptr) {
+    subchannel_->CancelConnectivityStateWatch(pending_watcher_);
+    pending_watcher_ = nullptr;
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::ShutdownLocked() {
+  if (pending_watcher_ != nullptr) CancelConnectivityWatchLocked("shutdown");
+  UnrefSubchannelLocked("shutdown");
+}
+
+//
+// SubchannelList
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelList<SubchannelListType, SubchannelDataType>::SubchannelList(
+    LoadBalancingPolicy* policy, TraceFlag* tracer,
+    const ServerAddressList& addresses,
+    LoadBalancingPolicy::ChannelControlHelper* helper,
+    const grpc_channel_args& args)
+    : InternallyRefCounted<SubchannelListType>(tracer),
+      policy_(policy),
+      tracer_(tracer) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO,
+            "[%s %p] Creating subchannel list %p for %" PRIuPTR " subchannels",
+            tracer_->name(), policy, this, addresses.size());
+  }
+  subchannels_.reserve(addresses.size());
+  // We need to remove the LB addresses in order to be able to compare the
+  // subchannel keys of subchannels from a different batch of addresses.
+  // We remove the service config, since it will be passed into the
+  // subchannel via call context.
+  static const char* keys_to_remove[] = {GRPC_ARG_SUBCHANNEL_ADDRESS,
+                                         GRPC_ARG_SERVICE_CONFIG};
+  // Create a subchannel for each address.
+  for (size_t i = 0; i < addresses.size(); i++) {
+    // TODO(roth): we should ideally hide this from the LB policy code. In
+    // principle, if we're dealing with this special case in the client_channel
+    // code for selecting grpclb, then we should also strip out these addresses
+    // there if we're not using grpclb.
+    if (addresses[i].IsBalancer()) {
+      continue;
+    }
+    InlinedVector<grpc_arg, 3> args_to_add;
+    const size_t subchannel_address_arg_index = args_to_add.size();
+    args_to_add.emplace_back(
+        Subchannel::CreateSubchannelAddressArg(&addresses[i].address()));
+    if (addresses[i].args() != nullptr) {
+      for (size_t j = 0; j < addresses[i].args()->num_args; ++j) {
+        args_to_add.emplace_back(addresses[i].args()->args[j]);
+      }
+    }
+    grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+        &args, keys_to_remove, GPR_ARRAY_SIZE(keys_to_remove),
+        args_to_add.data(), args_to_add.size());
+    gpr_free(args_to_add[subchannel_address_arg_index].value.string);
+    RefCountedPtr<SubchannelInterface> subchannel =
+        helper->CreateSubchannel(*new_args);
+    grpc_channel_args_destroy(new_args);
+    if (subchannel == nullptr) {
+      // Subchannel could not be created.
+      if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+        char* address_uri = grpc_sockaddr_to_uri(&addresses[i].address());
+        gpr_log(GPR_INFO,
+                "[%s %p] could not create subchannel for address uri %s, "
+                "ignoring",
+                tracer_->name(), policy_, address_uri);
+        gpr_free(address_uri);
+      }
+      continue;
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+      char* address_uri = grpc_sockaddr_to_uri(&addresses[i].address());
+      gpr_log(GPR_INFO,
+              "[%s %p] subchannel list %p index %" PRIuPTR
+              ": Created subchannel %p for address uri %s",
+              tracer_->name(), policy_, this, subchannels_.size(),
+              subchannel.get(), address_uri);
+      gpr_free(address_uri);
+    }
+    subchannels_.emplace_back(this, addresses[i], std::move(subchannel));
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelList<SubchannelListType, SubchannelDataType>::~SubchannelList() {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[%s %p] Destroying subchannel_list %p", tracer_->name(),
+            policy_, this);
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelList<SubchannelListType, SubchannelDataType>::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[%s %p] Shutting down subchannel_list %p",
+            tracer_->name(), policy_, this);
+  }
+  GPR_ASSERT(!shutting_down_);
+  shutting_down_ = true;
+  for (size_t i = 0; i < subchannels_.size(); i++) {
+    SubchannelDataType* sd = &subchannels_[i];
+    sd->ShutdownLocked();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelList<SubchannelListType,
+                    SubchannelDataType>::ResetBackoffLocked() {
+  for (size_t i = 0; i < subchannels_.size(); i++) {
+    SubchannelDataType* sd = &subchannels_[i];
+    sd->ResetBackoffLocked();
+  }
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/xds/xds.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/xds/xds.h
new file mode 100644
index 0000000..13d3435
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy/xds/xds.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H
+
+#include <grpc/support/port_platform.h>
+
+/** Channel arg indicating if a target corresponding to the address is a backend
+ * received from a balancer. The type of this arg is an integer and the value is
+ * treated as a bool. */
+// TODO(roth): Depending on how we ultimately decide to handle fallback,
+// this may no longer be needed.
+#define GRPC_ARG_ADDRESS_IS_BACKEND_FROM_XDS_LOAD_BALANCER \
+  "grpc.address_is_backend_from_xds_load_balancer"
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_factory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_factory.h
new file mode 100644
index 0000000..9e4425f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_factory.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+class LoadBalancingPolicyFactory {
+ public:
+  virtual ~LoadBalancingPolicyFactory() {}
+
+  /// Returns a new LB policy instance.
+  virtual OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args) const = 0;
+
+  /// Returns the LB policy name that this factory provides.
+  /// Caller does NOT take ownership of result.
+  virtual const char* name() const = 0;
+
+  virtual RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error) const = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_registry.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_registry.h
new file mode 100644
index 0000000..8d2e3e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/lb_policy_registry.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+class LoadBalancingPolicyRegistry {
+ public:
+  /// Methods used to create and populate the LoadBalancingPolicyRegistry.
+  /// NOT THREAD SAFE -- to be used only during global gRPC
+  /// initialization and shutdown.
+  class Builder {
+   public:
+    /// Global initialization and shutdown hooks.
+    static void InitRegistry();
+    static void ShutdownRegistry();
+
+    /// Registers an LB policy factory.  The factory will be used to create an
+    /// LB policy whose name matches that of the factory.
+    static void RegisterLoadBalancingPolicyFactory(
+        std::unique_ptr<LoadBalancingPolicyFactory> factory);
+  };
+
+  /// Creates an LB policy of the type specified by \a name.
+  static OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      const char* name, LoadBalancingPolicy::Args args);
+
+  /// Returns true if the LB policy factory specified by \a name exists in this
+  /// registry. If the load balancing policy requires a config to be specified
+  /// then sets \a requires_config to true.
+  static bool LoadBalancingPolicyExists(const char* name,
+                                        bool* requires_config);
+
+  /// Returns a parsed object of the load balancing policy to be used from a
+  /// LoadBalancingConfig array \a json.
+  static RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/local_subchannel_pool.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/local_subchannel_pool.h
new file mode 100644
index 0000000..a6b7e25
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/local_subchannel_pool.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+
+namespace grpc_core {
+
+// The local subchannel pool that is owned by a single channel. It doesn't
+// support subchannel sharing with other channels by nature. Nor does it support
+// subchannel retention when a subchannel is not used. The only real purpose of
+// using this subchannel pool is to allow subchannel reuse within the channel
+// when an incoming resolver update contains some addresses for which the
+// channel has already created subchannels.
+// Thread-unsafe.
+class LocalSubchannelPool final : public SubchannelPoolInterface {
+ public:
+  LocalSubchannelPool();
+  ~LocalSubchannelPool() override;
+
+  // Implements interface methods.
+  // Thread-unsafe. Intended to be invoked within the client_channel combiner.
+  Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                 Subchannel* constructed) override;
+  void UnregisterSubchannel(SubchannelKey* key) override;
+  Subchannel* FindSubchannel(SubchannelKey* key) override;
+
+ private:
+  // The vtable for subchannel operations in an AVL tree.
+  static const grpc_avl_vtable subchannel_avl_vtable_;
+  // A map from subchannel key to subchannel.
+  grpc_avl subchannel_map_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/parse_address.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/parse_address.h
new file mode 100644
index 0000000..5c050a2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/parse_address.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain a
+ * unix socket path. Returns true upon success. */
+bool grpc_parse_unix(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv4 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv4(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv6 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv6(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri. Returns true upon success. */
+bool grpc_parse_uri(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Parse bare IPv4 or IPv6 "IP:port" strings. */
+bool grpc_parse_ipv4_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors);
+bool grpc_parse_ipv6_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors);
+
+/* Converts named or numeric port to a uint16 suitable for use in a sockaddr. */
+uint16_t grpc_strhtons(const char* port);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper.h
new file mode 100644
index 0000000..3e297d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+namespace grpc_core {
+
+class ProxyMapperInterface {
+ public:
+  virtual ~ProxyMapperInterface() = default;
+
+  /// Determines the proxy name to resolve for \a server_uri.
+  /// If no proxy is needed, returns false.
+  /// Otherwise, sets \a name_to_resolve, optionally sets \a new_args,
+  /// and returns true.
+  virtual bool MapName(const char* server_uri, const grpc_channel_args* args,
+                       char** name_to_resolve,
+                       grpc_channel_args** new_args) = 0;
+
+  /// Determines the proxy address to use to contact \a address.
+  /// If no proxy is needed, returns false.
+  /// Otherwise, sets \a new_address, optionally sets \a new_args, and
+  /// returns true.
+  virtual bool MapAddress(const grpc_resolved_address& address,
+                          const grpc_channel_args* args,
+                          grpc_resolved_address** new_address,
+                          grpc_channel_args** new_args) = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper_registry.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper_registry.h
new file mode 100644
index 0000000..b6273e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/proxy_mapper_registry.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/proxy_mapper.h"
+
+namespace grpc_core {
+
+class ProxyMapperRegistry {
+ public:
+  static void Init();
+  static void Shutdown();
+
+  /// Registers a new proxy mapper.
+  /// If \a at_start is true, the new mapper will be at the beginning of
+  /// the list.  Otherwise, it will be added to the end.
+  static void Register(bool at_start,
+                       std::unique_ptr<ProxyMapperInterface> mapper);
+
+  static bool MapName(const char* server_uri, const grpc_channel_args* args,
+                      char** name_to_resolve, grpc_channel_args** new_args);
+
+  static bool MapAddress(const grpc_resolved_address& address,
+                         const grpc_channel_args* args,
+                         grpc_resolved_address** new_address,
+                         grpc_channel_args** new_args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver.h
new file mode 100644
index 0000000..56bf273
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver.h	
@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iomgr.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_resolver_refcount;
+
+namespace grpc_core {
+
+/// Interface for name resolution.
+///
+/// This interface is designed to support both push-based and pull-based
+/// mechanisms.  A push-based mechanism is one where the resolver will
+/// subscribe to updates for a given name, and the name service will
+/// proactively send new data to the resolver whenever the data associated
+/// with the name changes.  A pull-based mechanism is one where the resolver
+/// needs to query the name service again to get updated information (e.g.,
+/// DNS).
+///
+/// Note: All methods with a "Locked" suffix must be called from the
+/// combiner passed to the constructor.
+class Resolver : public InternallyRefCounted<Resolver> {
+ public:
+  /// Results returned by the resolver.
+  struct Result {
+    ServerAddressList addresses;
+    RefCountedPtr<ServiceConfig> service_config;
+    grpc_error* service_config_error = GRPC_ERROR_NONE;
+    const grpc_channel_args* args = nullptr;
+
+    // TODO(roth): Remove everything below once grpc_error and
+    // grpc_channel_args are convert to copyable and movable C++ objects.
+    Result() = default;
+    ~Result();
+    Result(const Result& other);
+    Result(Result&& other);
+    Result& operator=(const Result& other);
+    Result& operator=(Result&& other);
+  };
+
+  /// A proxy object used by the resolver to return results to the
+  /// client channel.
+  class ResultHandler {
+   public:
+    virtual ~ResultHandler() {}
+
+    /// Returns a result to the channel.
+    /// Takes ownership of \a result.args.
+    virtual void ReturnResult(Result result) = 0;  // NOLINT
+
+    /// Returns a transient error to the channel.
+    /// If the resolver does not set the GRPC_ERROR_INT_GRPC_STATUS
+    /// attribute on the error, calls will be failed with status UNKNOWN.
+    virtual void ReturnError(grpc_error* error) = 0;
+
+    // TODO(yashkt): As part of the service config error handling
+    // changes, add a method to parse the service config JSON string.
+  };
+
+  // Not copyable nor movable.
+  Resolver(const Resolver&) = delete;
+  Resolver& operator=(const Resolver&) = delete;
+  virtual ~Resolver();
+
+  /// Starts resolving.
+  virtual void StartLocked() = 0;
+
+  /// Asks the resolver to obtain an updated resolver result, if
+  /// applicable.
+  ///
+  /// This is useful for pull-based implementations to decide when to
+  /// re-resolve.  However, the implementation is not required to
+  /// re-resolve immediately upon receiving this call; it may instead
+  /// elect to delay based on some configured minimum time between
+  /// queries, to avoid hammering the name service with queries.
+  ///
+  /// For push-based implementations, this may be a no-op.
+  ///
+  /// Note: Implementations must not invoke any method on the
+  /// ResultHandler from within this call.
+  virtual void RequestReresolutionLocked() {}
+
+  /// Resets the re-resolution backoff, if any.
+  /// This needs to be implemented only by pull-based implementations;
+  /// for push-based implementations, it will be a no-op.
+  /// TODO(roth): Pull the backoff code out of resolver and into
+  /// client_channel, so that it can be shared across resolver
+  /// implementations.  At that point, this method can go away.
+  virtual void ResetBackoffLocked() {}
+
+  // Note: This must be invoked while holding the combiner.
+  void Orphan() override {
+    ShutdownLocked();
+    Unref();
+  }
+
+ protected:
+  /// Does NOT take ownership of the reference to \a combiner.
+  // TODO(roth): Once we have a C++-like interface for combiners, this
+  // API should change to take a RefCountedPtr<>, so that we always take
+  // ownership of a new ref.
+  explicit Resolver(Combiner* combiner,
+                    std::unique_ptr<ResultHandler> result_handler);
+
+  /// Shuts down the resolver.
+  virtual void ShutdownLocked() = 0;
+
+  Combiner* combiner() const { return combiner_; }
+
+  ResultHandler* result_handler() const { return result_handler_.get(); }
+
+ private:
+  std::unique_ptr<ResultHandler> result_handler_;
+  Combiner* combiner_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h
new file mode 100644
index 0000000..1a5a3f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <ares.h>
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+typedef struct grpc_ares_ev_driver grpc_ares_ev_driver;
+
+/* Start \a ev_driver. It will keep working until all IO on its ares_channel is
+   done, or grpc_ares_ev_driver_destroy() is called. It may notify the callbacks
+   bound to its ares_channel when necessary. */
+void grpc_ares_ev_driver_start_locked(grpc_ares_ev_driver* ev_driver);
+
+/* Returns the ares_channel owned by \a ev_driver. To bind a c-ares query to
+   \a ev_driver, use the ares_channel owned by \a ev_driver as the arg of the
+   query. */
+ares_channel* grpc_ares_ev_driver_get_channel_locked(
+    grpc_ares_ev_driver* ev_driver);
+
+/* Creates a new grpc_ares_ev_driver. Returns GRPC_ERROR_NONE if \a ev_driver is
+   created successfully. */
+grpc_error* grpc_ares_ev_driver_create_locked(grpc_ares_ev_driver** ev_driver,
+                                              grpc_pollset_set* pollset_set,
+                                              int query_timeout_ms,
+                                              grpc_core::Combiner* combiner,
+                                              grpc_ares_request* request);
+
+/* Called back when all DNS lookups have completed. */
+void grpc_ares_ev_driver_on_queries_complete_locked(
+    grpc_ares_ev_driver* ev_driver);
+
+/* Shutdown all the grpc_fds used by \a ev_driver */
+void grpc_ares_ev_driver_shutdown_locked(grpc_ares_ev_driver* ev_driver);
+
+/* Exposed in this header for C-core tests only */
+extern void (*grpc_ares_test_only_inject_config)(ares_channel channel);
+
+namespace grpc_core {
+
+/* A wrapped fd that integrates with the grpc iomgr of the current platform.
+ * A GrpcPolledFd knows how to create grpc platform-specific iomgr endpoints
+ * from "ares_socket_t" sockets, and then sign up for readability/writeability
+ * with that poller, and do shutdown and destruction. */
+class GrpcPolledFd {
+ public:
+  virtual ~GrpcPolledFd() {}
+  /* Called when c-ares library is interested and there's no pending callback */
+  virtual void RegisterForOnReadableLocked(grpc_closure* read_closure) = 0;
+  /* Called when c-ares library is interested and there's no pending callback */
+  virtual void RegisterForOnWriteableLocked(grpc_closure* write_closure) = 0;
+  /* Indicates if there is data left even after just being read from */
+  virtual bool IsFdStillReadableLocked() = 0;
+  /* Called once and only once. Must cause cancellation of any pending
+   * read/write callbacks. */
+  virtual void ShutdownLocked(grpc_error* error) = 0;
+  /* Get the underlying ares_socket_t that this was created from */
+  virtual ares_socket_t GetWrappedAresSocketLocked() = 0;
+  /* A unique name, for logging */
+  virtual const char* GetName() = 0;
+};
+
+/* A GrpcPolledFdFactory is 1-to-1 with and owned by the
+ * ares event driver. It knows how to create GrpcPolledFd's
+ * for the current platform, and the ares driver uses it for all of
+ * its fd's. */
+class GrpcPolledFdFactory {
+ public:
+  virtual ~GrpcPolledFdFactory() {}
+  /* Creates a new wrapped fd for the current platform */
+  virtual GrpcPolledFd* NewGrpcPolledFdLocked(
+      ares_socket_t as, grpc_pollset_set* driver_pollset_set,
+      Combiner* combiner) = 0;
+  /* Optionally configures the ares channel after creation */
+  virtual void ConfigureAresChannelLocked(ares_channel channel) = 0;
+};
+
+std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(Combiner* combiner);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h
new file mode 100644
index 0000000..1150181
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#define GRPC_DNS_ARES_DEFAULT_QUERY_TIMEOUT_MS 120000
+
+extern grpc_core::TraceFlag grpc_trace_cares_address_sorting;
+
+extern grpc_core::TraceFlag grpc_trace_cares_resolver;
+
+#define GRPC_CARES_TRACE_LOG(format, ...)                           \
+  do {                                                              \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_cares_resolver)) {       \
+      gpr_log(GPR_DEBUG, "(c-ares resolver) " format, __VA_ARGS__); \
+    }                                                               \
+  } while (0)
+
+typedef struct grpc_ares_request grpc_ares_request;
+
+/* Asynchronously resolve \a name. Use \a default_port if a port isn't
+   designated in \a name, otherwise use the port in \a name. grpc_ares_init()
+   must be called at least once before this function. \a on_done may be
+   called directly in this function without being scheduled with \a exec_ctx,
+   so it must not try to acquire locks that are being held by the caller. */
+extern void (*grpc_resolve_address_ares)(const char* name,
+                                         const char* default_port,
+                                         grpc_pollset_set* interested_parties,
+                                         grpc_closure* on_done,
+                                         grpc_resolved_addresses** addresses);
+
+/* Asynchronously resolve \a name. It will try to resolve grpclb SRV records in
+  addition to the normal address records. For normal address records, it uses
+  \a default_port if a port isn't designated in \a name, otherwise it uses the
+  port in \a name. grpc_ares_init() must be called at least once before this
+  function. \a on_done may be called directly in this function without being
+  scheduled with \a exec_ctx, so it must not try to acquire locks that are
+  being held by the caller. The returned grpc_ares_request object is owned
+  by the caller and it is safe to free after on_done is called back. */
+extern grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addresses, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner);
+
+/* Cancel the pending grpc_ares_request \a request */
+extern void (*grpc_cancel_ares_request_locked)(grpc_ares_request* request);
+
+/* Initialize gRPC ares wrapper. Must be called at least once before
+   grpc_resolve_address_ares(). */
+grpc_error* grpc_ares_init(void);
+
+/* Uninitialized gRPC ares wrapper. If there was more than one previous call to
+   grpc_ares_init(), this function uninitializes the gRPC ares wrapper only if
+   it has been called the same number of times as grpc_ares_init(). */
+void grpc_ares_cleanup(void);
+
+/** Schedules the desired callback for request completion
+ * and destroys the grpc_ares_request */
+void grpc_ares_complete_request_locked(grpc_ares_request* request);
+
+/* Indicates whether or not AAAA queries should be attempted. */
+/* E.g., return false if ipv6 is known to not be available. */
+bool grpc_ares_query_ipv6();
+
+/* Sorts destinations in lb_addrs according to RFC 6724. */
+void grpc_cares_wrapper_address_sorting_sort(
+    grpc_core::ServerAddressList* addresses);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h
new file mode 100644
index 0000000..d0a3486
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_dns_resolver);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h
new file mode 100644
index 0000000..c04c7c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h	
@@ -0,0 +1,97 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/error.h"
+
+#define GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR \
+  "grpc.fake_resolver.response_generator"
+
+namespace grpc_core {
+
+class FakeResolver;
+
+/// A mechanism for generating responses for the fake resolver.
+/// An instance of this class is passed to the fake resolver via a channel
+/// argument (see \a MakeChannelArg()) and used to inject and trigger custom
+/// resolutions.
+// TODO(roth): I would ideally like this to be InternallyRefCounted
+// instead of RefCounted, but external refs are currently needed to
+// encode this in channel args.  Once channel_args are converted to C++,
+// see if we can find a way to fix this.
+class FakeResolverResponseGenerator
+    : public RefCounted<FakeResolverResponseGenerator> {
+ public:
+  FakeResolverResponseGenerator();
+  ~FakeResolverResponseGenerator();
+
+  // Instructs the fake resolver associated with the response generator
+  // instance to trigger a new resolution with the specified result. If the
+  // resolver is not available yet, delays response setting until it is. This
+  // can be called at most once before the resolver is available.
+  void SetResponse(Resolver::Result result);
+
+  // Sets the re-resolution response, which is returned by the fake resolver
+  // when re-resolution is requested (via \a RequestReresolutionLocked()).
+  // The new re-resolution response replaces any previous re-resolution
+  // response that may have been set by a previous call.
+  void SetReresolutionResponse(Resolver::Result result);
+
+  // Unsets the re-resolution response.  After this, the fake resolver will
+  // not return anything when \a RequestReresolutionLocked() is called.
+  void UnsetReresolutionResponse();
+
+  // Tells the resolver to return a transient failure.
+  void SetFailure();
+
+  // Same as SetFailure(), but instead of returning the error
+  // immediately, waits for the next call to RequestReresolutionLocked().
+  void SetFailureOnReresolution();
+
+  // Returns a channel arg containing \a generator.
+  static grpc_arg MakeChannelArg(FakeResolverResponseGenerator* generator);
+
+  // Returns the response generator in \a args, or null if not found.
+  static RefCountedPtr<FakeResolverResponseGenerator> GetFromArgs(
+      const grpc_channel_args* args);
+
+ private:
+  friend class FakeResolver;
+  // Set the corresponding FakeResolver to this generator.
+  void SetFakeResolver(RefCountedPtr<FakeResolver> resolver);
+
+  static void SetResponseLocked(void* arg, grpc_error* error);
+  static void SetReresolutionResponseLocked(void* arg, grpc_error* error);
+  static void SetFailureLocked(void* arg, grpc_error* error);
+
+  // Mutex protecting the members below.
+  Mutex mu_;
+  RefCountedPtr<FakeResolver> resolver_;
+  Resolver::Result result_;
+  bool has_result_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_factory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_factory.h
new file mode 100644
index 0000000..b6a1e30
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_factory.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+
+struct ResolverArgs {
+  /// The parsed URI to resolve.
+  grpc_uri* uri = nullptr;
+  /// Channel args to be included in resolver results.
+  const grpc_channel_args* args = nullptr;
+  /// Used to drive I/O in the name resolution process.
+  grpc_pollset_set* pollset_set = nullptr;
+  /// The combiner under which all resolver calls will be run.
+  Combiner* combiner = nullptr;
+  /// The result handler to be used by the resolver.
+  std::unique_ptr<Resolver::ResultHandler> result_handler;
+};
+
+class ResolverFactory {
+ public:
+  /// Returns a bool indicating whether the input uri is valid to create a
+  /// resolver.
+  virtual bool IsValidUri(const grpc_uri* uri) const = 0;
+
+  /// Returns a new resolver instance.
+  virtual OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const = 0;
+
+  /// Returns a string representing the default authority to use for this
+  /// scheme.
+  virtual grpc_core::UniquePtr<char> GetDefaultAuthority(grpc_uri* uri) const {
+    const char* path = uri->path;
+    if (path[0] == '/') ++path;
+    return grpc_core::UniquePtr<char>(gpr_strdup(path));
+  }
+
+  /// Returns the URI scheme that this factory implements.
+  /// Caller does NOT take ownership of result.
+  virtual const char* scheme() const = 0;
+
+  virtual ~ResolverFactory() {}
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_registry.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_registry.h
new file mode 100644
index 0000000..718750a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_registry.h	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver_factory.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+namespace grpc_core {
+
+class ResolverRegistry {
+ public:
+  /// Methods used to create and populate the ResolverRegistry.
+  /// NOT THREAD SAFE -- to be used only during global gRPC
+  /// initialization and shutdown.
+  class Builder {
+   public:
+    /// Global initialization and shutdown hooks.
+    static void InitRegistry();
+    static void ShutdownRegistry();
+
+    /// Sets the default URI prefix to \a default_prefix.
+    /// Calls InitRegistry() if it has not already been called.
+    static void SetDefaultPrefix(const char* default_prefix);
+
+    /// Registers a resolver factory.  The factory will be used to create a
+    /// resolver for any URI whose scheme matches that of the factory.
+    /// Calls InitRegistry() if it has not already been called.
+    static void RegisterResolverFactory(
+        std::unique_ptr<ResolverFactory> factory);
+  };
+
+  /// Checks whether the user input \a target is valid to create a resolver.
+  static bool IsValidTarget(const char* target);
+
+  /// Creates a resolver given \a target.
+  /// First tries to parse \a target as a URI. If this succeeds, tries
+  /// to locate a registered resolver factory based on the URI scheme.
+  /// If parsing fails or there is no factory for the URI's scheme,
+  /// prepends default_prefix to target and tries again.
+  /// If a resolver factory is found, uses it to instantiate a resolver and
+  /// returns it; otherwise, returns nullptr.
+  /// \a args, \a pollset_set, and \a combiner are passed to the factory's
+  /// \a CreateResolver() method.
+  /// \a args are the channel args to be included in resolver results.
+  /// \a pollset_set is used to drive I/O in the name resolution process.
+  /// \a combiner is the combiner under which all resolver calls will be run.
+  /// \a result_handler is used to return results from the resolver.
+  static OrphanablePtr<Resolver> CreateResolver(
+      const char* target, const grpc_channel_args* args,
+      grpc_pollset_set* pollset_set, Combiner* combiner,
+      std::unique_ptr<Resolver::ResultHandler> result_handler);
+
+  /// Returns the default authority to pass from a client for \a target.
+  static grpc_core::UniquePtr<char> GetDefaultAuthority(const char* target);
+
+  /// Returns \a target with the default prefix prepended, if needed.
+  static grpc_core::UniquePtr<char> AddDefaultPrefixIfNeeded(
+      const char* target);
+
+  /// Returns the resolver factory for \a scheme.
+  /// Caller does NOT own the return value.
+  static ResolverFactory* LookupResolverFactory(const char* scheme);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_result_parsing.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_result_parsing.h
new file mode 100644
index 0000000..27d7f6f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolver_result_parsing.h	
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gprpp/optional.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/exec_ctx.h"  // for grpc_millis
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+
+namespace grpc_core {
+namespace internal {
+
+class ClientChannelGlobalParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct RetryThrottling {
+    intptr_t max_milli_tokens = 0;
+    intptr_t milli_token_ratio = 0;
+  };
+
+  ClientChannelGlobalParsedConfig(
+      RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config,
+      grpc_core::UniquePtr<char> parsed_deprecated_lb_policy,
+      const Optional<RetryThrottling>& retry_throttling,
+      const char* health_check_service_name)
+      : parsed_lb_config_(std::move(parsed_lb_config)),
+        parsed_deprecated_lb_policy_(std::move(parsed_deprecated_lb_policy)),
+        retry_throttling_(retry_throttling),
+        health_check_service_name_(health_check_service_name) {}
+
+  Optional<RetryThrottling> retry_throttling() const {
+    return retry_throttling_;
+  }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config() const {
+    return parsed_lb_config_;
+  }
+
+  const char* parsed_deprecated_lb_policy() const {
+    return parsed_deprecated_lb_policy_.get();
+  }
+
+  const char* health_check_service_name() const {
+    return health_check_service_name_;
+  }
+
+ private:
+  RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config_;
+  grpc_core::UniquePtr<char> parsed_deprecated_lb_policy_;
+  Optional<RetryThrottling> retry_throttling_;
+  const char* health_check_service_name_;
+};
+
+class ClientChannelMethodParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct RetryPolicy {
+    int max_attempts = 0;
+    grpc_millis initial_backoff = 0;
+    grpc_millis max_backoff = 0;
+    float backoff_multiplier = 0;
+    StatusCodeSet retryable_status_codes;
+  };
+
+  ClientChannelMethodParsedConfig(grpc_millis timeout,
+                                  const Optional<bool>& wait_for_ready,
+                                  std::unique_ptr<RetryPolicy> retry_policy)
+      : timeout_(timeout),
+        wait_for_ready_(wait_for_ready),
+        retry_policy_(std::move(retry_policy)) {}
+
+  grpc_millis timeout() const { return timeout_; }
+
+  Optional<bool> wait_for_ready() const { return wait_for_ready_; }
+
+  const RetryPolicy* retry_policy() const { return retry_policy_.get(); }
+
+ private:
+  grpc_millis timeout_ = 0;
+  Optional<bool> wait_for_ready_;
+  std::unique_ptr<RetryPolicy> retry_policy_;
+};
+
+class ClientChannelServiceConfigParser : public ServiceConfig::Parser {
+ public:
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParseGlobalParams(
+      const Json& json, grpc_error** error) override;
+
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParsePerMethodParams(
+      const Json& json, grpc_error** error) override;
+
+  static size_t ParserIndex();
+  static void Register();
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolving_lb_policy.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolving_lb_policy.h
new file mode 100644
index 0000000..ba53368
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/resolving_lb_policy.h	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata_batch.h"
+
+namespace grpc_core {
+
+// An LB policy that wraps a resolver and a child LB policy to make use
+// of the addresses returned by the resolver.
+//
+// When used in the client_channel code, the resolver will attempt to
+// fetch the service config, and the child LB policy name and config
+// will be determined based on the service config.
+//
+// When used in an LB policy implementation that needs to do another
+// round of resolution before creating a child policy, the resolver does
+// not fetch the service config, and the caller must pre-determine the
+// child LB policy and config to use.
+class ResolvingLoadBalancingPolicy : public LoadBalancingPolicy {
+ public:
+  // Synchronous callback that takes the resolver result and sets
+  // lb_policy_config to point to the right data.
+  // Returns true if the service config has changed since the last result.
+  // If the returned no_valid_service_config is true, that means that we
+  // don't have a valid service config to use, and we should set the channel
+  // to be in TRANSIENT_FAILURE.
+  typedef bool (*ProcessResolverResultCallback)(
+      void* user_data, const Resolver::Result& result,
+      RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config,
+      grpc_error** service_config_error, bool* no_valid_service_config);
+  // If error is set when this returns, then construction failed, and
+  // the caller may not use the new object.
+  ResolvingLoadBalancingPolicy(
+      Args args, TraceFlag* tracer, grpc_core::UniquePtr<char> target_uri,
+      ProcessResolverResultCallback process_resolver_result,
+      void* process_resolver_result_user_data);
+
+  virtual const char* name() const override { return "resolving_lb"; }
+
+  // No-op -- should never get updates from the channel.
+  // TODO(roth): Need to support updating child LB policy's config for xds
+  // use case.
+  void UpdateLocked(UpdateArgs /*args*/) override {}
+
+  void ExitIdleLocked() override;
+
+  void ResetBackoffLocked() override;
+
+ private:
+  using TraceStringVector = InlinedVector<char*, 3>;
+
+  class ResolverResultHandler;
+  class ResolvingControlHelper;
+
+  ~ResolvingLoadBalancingPolicy();
+
+  void ShutdownLocked() override;
+
+  void OnResolverError(grpc_error* error);
+  void CreateOrUpdateLbPolicyLocked(
+      RefCountedPtr<LoadBalancingPolicy::Config> lb_policy_config,
+      Resolver::Result result);
+  OrphanablePtr<LoadBalancingPolicy> CreateLbPolicyLocked(
+      const grpc_channel_args& args);
+  void MaybeAddTraceMessagesForAddressChangesLocked(
+      bool resolution_contains_addresses, TraceStringVector* trace_strings);
+  void ConcatenateAndAddChannelTraceLocked(
+      TraceStringVector* trace_strings) const;
+  void OnResolverResultChangedLocked(Resolver::Result result);
+
+  // Passed in from caller at construction time.
+  TraceFlag* tracer_;
+  grpc_core::UniquePtr<char> target_uri_;
+  ProcessResolverResultCallback process_resolver_result_ = nullptr;
+  void* process_resolver_result_user_data_ = nullptr;
+  grpc_core::UniquePtr<char> child_policy_name_;
+  RefCountedPtr<LoadBalancingPolicy::Config> child_lb_config_;
+
+  // Resolver and associated state.
+  OrphanablePtr<Resolver> resolver_;
+  bool previous_resolution_contained_addresses_ = false;
+
+  // Child LB policy.
+  OrphanablePtr<LoadBalancingPolicy> lb_policy_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/retry_throttle.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/retry_throttle.h
new file mode 100644
index 0000000..897a617
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/retry_throttle.h	
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+
+namespace grpc_core {
+namespace internal {
+
+/// Tracks retry throttling data for an individual server name.
+class ServerRetryThrottleData : public RefCounted<ServerRetryThrottleData> {
+ public:
+  ServerRetryThrottleData(intptr_t max_milli_tokens, intptr_t milli_token_ratio,
+                          ServerRetryThrottleData* old_throttle_data);
+  ~ServerRetryThrottleData();
+
+  /// Records a failure.  Returns true if it's okay to send a retry.
+  bool RecordFailure();
+
+  /// Records a success.
+  void RecordSuccess();
+
+  intptr_t max_milli_tokens() const { return max_milli_tokens_; }
+  intptr_t milli_token_ratio() const { return milli_token_ratio_; }
+
+ private:
+  void GetReplacementThrottleDataIfNeeded(
+      ServerRetryThrottleData** throttle_data);
+
+  const intptr_t max_milli_tokens_;
+  const intptr_t milli_token_ratio_;
+  gpr_atm milli_tokens_;
+  // A pointer to the replacement for this ServerRetryThrottleData entry.
+  // If non-nullptr, then this entry is stale and must not be used.
+  // We hold a reference to the replacement.
+  gpr_atm replacement_ = 0;
+};
+
+/// Global map of server name to retry throttle data.
+class ServerRetryThrottleMap {
+ public:
+  /// Initializes global map of failure data for each server name.
+  static void Init();
+  /// Shuts down global map of failure data for each server name.
+  static void Shutdown();
+
+  /// Returns the failure data for \a server_name, creating a new entry if
+  /// needed.
+  static RefCountedPtr<ServerRetryThrottleData> GetDataForServer(
+      const char* server_name, intptr_t max_milli_tokens,
+      intptr_t milli_token_ratio);
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/server_address.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/server_address.h
new file mode 100644
index 0000000..acd7135
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/server_address.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+// Channel arg key for a bool indicating whether an address is a grpclb
+// load balancer (as opposed to a backend).
+#define GRPC_ARG_ADDRESS_IS_BALANCER "grpc.address_is_balancer"
+
+// Channel arg key for a string indicating an address's balancer name.
+#define GRPC_ARG_ADDRESS_BALANCER_NAME "grpc.address_balancer_name"
+
+namespace grpc_core {
+
+//
+// ServerAddress
+//
+
+// A server address is a grpc_resolved_address with an associated set of
+// channel args.  Any args present here will be merged into the channel
+// args when a subchannel is created for this address.
+class ServerAddress {
+ public:
+  // Takes ownership of args.
+  ServerAddress(const grpc_resolved_address& address, grpc_channel_args* args);
+  ServerAddress(const void* address, size_t address_len,
+                grpc_channel_args* args);
+
+  ~ServerAddress() { grpc_channel_args_destroy(args_); }
+
+  // Copyable.
+  ServerAddress(const ServerAddress& other)
+      : address_(other.address_), args_(grpc_channel_args_copy(other.args_)) {}
+  ServerAddress& operator=(const ServerAddress& other) {
+    address_ = other.address_;
+    grpc_channel_args_destroy(args_);
+    args_ = grpc_channel_args_copy(other.args_);
+    return *this;
+  }
+
+  // Movable.
+  ServerAddress(ServerAddress&& other)
+      : address_(other.address_), args_(other.args_) {
+    other.args_ = nullptr;
+  }
+  ServerAddress& operator=(ServerAddress&& other) {
+    address_ = other.address_;
+    grpc_channel_args_destroy(args_);
+    args_ = other.args_;
+    other.args_ = nullptr;
+    return *this;
+  }
+
+  bool operator==(const ServerAddress& other) const;
+
+  const grpc_resolved_address& address() const { return address_; }
+  const grpc_channel_args* args() const { return args_; }
+
+  bool IsBalancer() const;
+
+ private:
+  grpc_resolved_address address_;
+  grpc_channel_args* args_;
+};
+
+//
+// ServerAddressList
+//
+
+typedef InlinedVector<ServerAddress, 1> ServerAddressList;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/service_config.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/service_config.h
new file mode 100644
index 0000000..6e9ead5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/service_config.h	
@@ -0,0 +1,193 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+
+// The main purpose of the code here is to parse the service config in
+// JSON form, which will look like this:
+//
+// {
+//   "loadBalancingPolicy": "string",  // optional
+//   "methodConfig": [  // array of one or more method_config objects
+//     {
+//       "name": [  // array of one or more name objects
+//         {
+//           "service": "string",  // required
+//           "method": "string",  // optional
+//         }
+//       ],
+//       // remaining fields are optional.
+//       // see https://developers.google.com/protocol-buffers/docs/proto3#json
+//       // for format details.
+//       "waitForReady": bool,
+//       "timeout": "duration_string",
+//       "maxRequestMessageBytes": "int64_string",
+//       "maxResponseMessageBytes": "int64_string",
+//     }
+//   ]
+// }
+
+namespace grpc_core {
+
+class ServiceConfig : public RefCounted<ServiceConfig> {
+ public:
+  /// This is the base class that all service config parsers MUST use to store
+  /// parsed service config data.
+  class ParsedConfig {
+   public:
+    virtual ~ParsedConfig() = default;
+  };
+
+  /// This is the base class that all service config parsers should derive from.
+  class Parser {
+   public:
+    virtual ~Parser() = default;
+
+    virtual std::unique_ptr<ParsedConfig> ParseGlobalParams(
+        const Json& /* json */, grpc_error** error) {
+      // Avoid unused parameter warning on debug-only parameter
+      (void)error;
+      GPR_DEBUG_ASSERT(error != nullptr);
+      return nullptr;
+    }
+
+    virtual std::unique_ptr<ParsedConfig> ParsePerMethodParams(
+        const Json& /* json */, grpc_error** error) {
+      // Avoid unused parameter warning on debug-only parameter
+      (void)error;
+      GPR_DEBUG_ASSERT(error != nullptr);
+      return nullptr;
+    }
+  };
+
+  static constexpr int kNumPreallocatedParsers = 4;
+  typedef InlinedVector<std::unique_ptr<ParsedConfig>, kNumPreallocatedParsers>
+      ParsedConfigVector;
+
+  /// When a service config is applied to a call in the client_channel_filter,
+  /// we create an instance of this object and store it in the call_data for
+  /// client_channel. A pointer to this object is also stored in the
+  /// call_context, so that future filters can easily access method and global
+  /// parameters for the call.
+  class CallData {
+   public:
+    CallData() = default;
+    CallData(RefCountedPtr<ServiceConfig> svc_cfg, const grpc_slice& path)
+        : service_config_(std::move(svc_cfg)) {
+      if (service_config_ != nullptr) {
+        method_params_vector_ =
+            service_config_->GetMethodParsedConfigVector(path);
+      }
+    }
+
+    ServiceConfig* service_config() { return service_config_.get(); }
+
+    ParsedConfig* GetMethodParsedConfig(size_t index) const {
+      return method_params_vector_ != nullptr
+                 ? (*method_params_vector_)[index].get()
+                 : nullptr;
+    }
+
+    ParsedConfig* GetGlobalParsedConfig(size_t index) const {
+      return service_config_->GetGlobalParsedConfig(index);
+    }
+
+   private:
+    RefCountedPtr<ServiceConfig> service_config_;
+    const ParsedConfigVector* method_params_vector_ = nullptr;
+  };
+
+  /// Creates a new service config from parsing \a json_string.
+  /// Returns null on parse error.
+  static RefCountedPtr<ServiceConfig> Create(StringView json_string,
+                                             grpc_error** error);
+
+  ServiceConfig(std::string json_string, Json json, grpc_error** error);
+
+  const std::string& json_string() const { return json_string_; }
+
+  /// Retrieves the global parsed config at index \a index. The
+  /// lifetime of the returned object is tied to the lifetime of the
+  /// ServiceConfig object.
+  ParsedConfig* GetGlobalParsedConfig(size_t index) {
+    GPR_DEBUG_ASSERT(index < parsed_global_configs_.size());
+    return parsed_global_configs_[index].get();
+  }
+
+  /// Retrieves the vector of parsed configs for the method identified
+  /// by \a path.  The lifetime of the returned vector and contained objects
+  /// is tied to the lifetime of the ServiceConfig object.
+  const ParsedConfigVector* GetMethodParsedConfigVector(const grpc_slice& path);
+
+  /// Globally register a service config parser. On successful registration, it
+  /// returns the index at which the parser was registered. On failure, -1 is
+  /// returned. Each new service config update will go through all the
+  /// registered parser. Each parser is responsible for reading the service
+  /// config json and returning a parsed config. This parsed config can later be
+  /// retrieved using the same index that was returned at registration time.
+  static size_t RegisterParser(std::unique_ptr<Parser> parser);
+
+  static void Init();
+
+  static void Shutdown();
+
+ private:
+  // Helper functions to parse the service config
+  grpc_error* ParseGlobalParams();
+  grpc_error* ParsePerMethodParams();
+
+  // Returns a path string for the JSON name object specified by \a json.
+  // Returns null on error, and stores error in \a error.
+  static UniquePtr<char> ParseJsonMethodName(const Json& json,
+                                             grpc_error** error);
+
+  grpc_error* ParseJsonMethodConfigToServiceConfigVectorTable(
+      const Json& json,
+      InlinedVector<SliceHashTable<const ParsedConfigVector*>::Entry, 10>*
+          entries);
+
+  std::string json_string_;
+  Json json_;
+
+  InlinedVector<std::unique_ptr<ParsedConfig>, kNumPreallocatedParsers>
+      parsed_global_configs_;
+  // A map from the method name to the parsed config vector. Note that we are
+  // using a raw pointer and not a unique pointer so that we can use the same
+  // vector for multiple names.
+  RefCountedPtr<SliceHashTable<const ParsedConfigVector*>>
+      parsed_method_configs_table_;
+  // Storage for all the vectors that are being used in
+  // parsed_method_configs_table_.
+  InlinedVector<std::unique_ptr<ParsedConfigVector>, 32>
+      parsed_method_config_vectors_storage_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel.h
new file mode 100644
index 0000000..cf4ddaf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel.h	
@@ -0,0 +1,403 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/connector.h"
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata.h"
+
+// Channel arg containing a grpc_resolved_address to connect to.
+#define GRPC_ARG_SUBCHANNEL_ADDRESS "grpc.subchannel_address"
+
+// For debugging refcounting.
+#ifndef NDEBUG
+#define GRPC_SUBCHANNEL_REF(p, r) (p)->Ref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(p, r) (p)->RefFromWeakRef()
+#define GRPC_SUBCHANNEL_UNREF(p, r) (p)->Unref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_WEAK_REF(p, r) (p)->WeakRef(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) (p)->WeakUnref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS \
+  const char *file, int line, const char *reason
+#define GRPC_SUBCHANNEL_REF_REASON reason
+#define GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS \
+  , GRPC_SUBCHANNEL_REF_EXTRA_ARGS, const char* purpose
+#define GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE(x) , file, line, reason, x
+#else
+#define GRPC_SUBCHANNEL_REF(p, r) (p)->Ref()
+#define GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(p, r) (p)->RefFromWeakRef()
+#define GRPC_SUBCHANNEL_UNREF(p, r) (p)->Unref()
+#define GRPC_SUBCHANNEL_WEAK_REF(p, r) (p)->WeakRef()
+#define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) (p)->WeakUnref()
+#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS
+#define GRPC_SUBCHANNEL_REF_REASON ""
+#define GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS
+#define GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE(x)
+#endif
+
+namespace grpc_core {
+
+class SubchannelCall;
+
+class ConnectedSubchannel : public RefCounted<ConnectedSubchannel> {
+ public:
+  ConnectedSubchannel(
+      grpc_channel_stack* channel_stack, const grpc_channel_args* args,
+      RefCountedPtr<channelz::SubchannelNode> channelz_subchannel);
+  ~ConnectedSubchannel();
+
+  void StartWatch(grpc_pollset_set* interested_parties,
+                  OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  void Ping(grpc_closure* on_initiate, grpc_closure* on_ack);
+
+  grpc_channel_stack* channel_stack() const { return channel_stack_; }
+  const grpc_channel_args* args() const { return args_; }
+  channelz::SubchannelNode* channelz_subchannel() const {
+    return channelz_subchannel_.get();
+  }
+
+  size_t GetInitialCallSizeEstimate(size_t parent_data_size) const;
+
+ private:
+  grpc_channel_stack* channel_stack_;
+  grpc_channel_args* args_;
+  // ref counted pointer to the channelz node in this connected subchannel's
+  // owning subchannel.
+  RefCountedPtr<channelz::SubchannelNode> channelz_subchannel_;
+};
+
+// Implements the interface of RefCounted<>.
+class SubchannelCall {
+ public:
+  struct Args {
+    RefCountedPtr<ConnectedSubchannel> connected_subchannel;
+    grpc_polling_entity* pollent;
+    grpc_slice path;
+    gpr_cycle_counter start_time;
+    grpc_millis deadline;
+    Arena* arena;
+    grpc_call_context_element* context;
+    CallCombiner* call_combiner;
+    size_t parent_data_size;
+  };
+  static RefCountedPtr<SubchannelCall> Create(Args args, grpc_error** error);
+
+  // Continues processing a transport stream op batch.
+  void StartTransportStreamOpBatch(grpc_transport_stream_op_batch* batch);
+
+  // Returns a pointer to the parent data associated with the subchannel call.
+  // The data will be of the size specified in \a parent_data_size field of
+  // the args passed to \a ConnectedSubchannel::CreateCall().
+  void* GetParentData();
+
+  // Returns the call stack of the subchannel call.
+  grpc_call_stack* GetCallStack();
+
+  // Sets the 'then_schedule_closure' argument for call stack destruction.
+  // Must be called once per call.
+  void SetAfterCallStackDestroy(grpc_closure* closure);
+
+  // Interface of RefCounted<>.
+  RefCountedPtr<SubchannelCall> Ref() GRPC_MUST_USE_RESULT;
+  RefCountedPtr<SubchannelCall> Ref(const DebugLocation& location,
+                                    const char* reason) GRPC_MUST_USE_RESULT;
+  // When refcount drops to 0, destroys itself and the associated call stack,
+  // but does NOT free the memory because it's in the call arena.
+  void Unref();
+  void Unref(const DebugLocation& location, const char* reason);
+
+  static void Destroy(void* arg, grpc_error* error);
+
+ private:
+  // Allow RefCountedPtr<> to access IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  SubchannelCall(Args args, grpc_error** error);
+
+  // If channelz is enabled, intercepts recv_trailing so that we may check the
+  // status and associate it to a subchannel.
+  void MaybeInterceptRecvTrailingMetadata(
+      grpc_transport_stream_op_batch* batch);
+
+  static void RecvTrailingMetadataReady(void* arg, grpc_error* error);
+
+  // Interface of RefCounted<>.
+  void IncrementRefCount();
+  void IncrementRefCount(const DebugLocation& location, const char* reason);
+
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  grpc_closure* after_call_stack_destroy_ = nullptr;
+  // State needed to support channelz interception of recv trailing metadata.
+  grpc_closure recv_trailing_metadata_ready_;
+  grpc_closure* original_recv_trailing_metadata_ = nullptr;
+  grpc_metadata_batch* recv_trailing_metadata_ = nullptr;
+  grpc_millis deadline_;
+};
+
+// A subchannel that knows how to connect to exactly one target address. It
+// provides a target for load balancing.
+//
+// Note that this is the "real" subchannel implementation, whose API is
+// different from the SubchannelInterface that is exposed to LB policy
+// implementations.  The client channel provides an adaptor class
+// (SubchannelWrapper) that "converts" between the two.
+class Subchannel {
+ public:
+  class ConnectivityStateWatcherInterface
+      : public InternallyRefCounted<ConnectivityStateWatcherInterface> {
+   public:
+    virtual ~ConnectivityStateWatcherInterface() = default;
+
+    // Will be invoked whenever the subchannel's connectivity state
+    // changes.  There will be only one invocation of this method on a
+    // given watcher instance at any given time.
+    //
+    // When the state changes to READY, connected_subchannel will
+    // contain a ref to the connected subchannel.  When it changes from
+    // READY to some other state, the implementation must release its
+    // ref to the connected subchannel.
+    virtual void OnConnectivityStateChange(
+        grpc_connectivity_state new_state,
+        RefCountedPtr<ConnectedSubchannel> connected_subchannel)  // NOLINT
+        = 0;
+
+    virtual grpc_pollset_set* interested_parties() = 0;
+  };
+
+  // The ctor and dtor are not intended to use directly.
+  Subchannel(SubchannelKey* key, OrphanablePtr<SubchannelConnector> connector,
+             const grpc_channel_args* args);
+  ~Subchannel();
+
+  // Creates a subchannel given \a connector and \a args.
+  static Subchannel* Create(OrphanablePtr<SubchannelConnector> connector,
+                            const grpc_channel_args* args);
+
+  // Strong and weak refcounting.
+  Subchannel* Ref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  void Unref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  Subchannel* WeakRef(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  void WeakUnref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  // Attempts to return a strong ref when only the weak refcount is guaranteed
+  // non-zero. If the strong refcount is zero, does not alter the refcount and
+  // returns null.
+  Subchannel* RefFromWeakRef();
+
+  // Gets the string representing the subchannel address.
+  // Caller doesn't take ownership.
+  const char* GetTargetAddress();
+
+  const grpc_channel_args* channel_args() const { return args_; }
+
+  channelz::SubchannelNode* channelz_node();
+
+  // Returns the current connectivity state of the subchannel.
+  // If health_check_service_name is non-null, the returned connectivity
+  // state will be based on the state reported by the backend for that
+  // service name.
+  // If the return value is GRPC_CHANNEL_READY, also sets *connected_subchannel.
+  grpc_connectivity_state CheckConnectivityState(
+      const char* health_check_service_name,
+      RefCountedPtr<ConnectedSubchannel>* connected_subchannel);
+
+  // Starts watching the subchannel's connectivity state.
+  // The first callback to the watcher will be delivered when the
+  // subchannel's connectivity state becomes a value other than
+  // initial_state, which may happen immediately.
+  // Subsequent callbacks will be delivered as the subchannel's state
+  // changes.
+  // The watcher will be destroyed either when the subchannel is
+  // destroyed or when CancelConnectivityStateWatch() is called.
+  void WatchConnectivityState(
+      grpc_connectivity_state initial_state,
+      grpc_core::UniquePtr<char> health_check_service_name,
+      OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  // Cancels a connectivity state watch.
+  // If the watcher has already been destroyed, this is a no-op.
+  void CancelConnectivityStateWatch(const char* health_check_service_name,
+                                    ConnectivityStateWatcherInterface* watcher);
+
+  // Attempt to connect to the backend.  Has no effect if already connected.
+  void AttemptToConnect();
+
+  // Resets the connection backoff of the subchannel.
+  // TODO(roth): Move connection backoff out of subchannels and up into LB
+  // policy code (probably by adding a SubchannelGroup between
+  // SubchannelList and SubchannelData), at which point this method can
+  // go away.
+  void ResetBackoff();
+
+  // Returns a new channel arg encoding the subchannel address as a URI
+  // string. Caller is responsible for freeing the string.
+  static grpc_arg CreateSubchannelAddressArg(const grpc_resolved_address* addr);
+
+  // Returns the URI string from the subchannel address arg in \a args.
+  static const char* GetUriFromSubchannelAddressArg(
+      const grpc_channel_args* args);
+
+  // Sets \a addr from the subchannel address arg in \a args.
+  static void GetAddressFromSubchannelAddressArg(const grpc_channel_args* args,
+                                                 grpc_resolved_address* addr);
+
+ private:
+  // A linked list of ConnectivityStateWatcherInterfaces that are monitoring
+  // the subchannel's state.
+  class ConnectivityStateWatcherList {
+   public:
+    ~ConnectivityStateWatcherList() { Clear(); }
+
+    void AddWatcherLocked(
+        OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+    void RemoveWatcherLocked(ConnectivityStateWatcherInterface* watcher);
+
+    // Notifies all watchers in the list about a change to state.
+    void NotifyLocked(Subchannel* subchannel, grpc_connectivity_state state);
+
+    void Clear() { watchers_.clear(); }
+
+    bool empty() const { return watchers_.empty(); }
+
+   private:
+    // TODO(roth): Once we can use C++-14 heterogeneous lookups, this can
+    // be a set instead of a map.
+    std::map<ConnectivityStateWatcherInterface*,
+             OrphanablePtr<ConnectivityStateWatcherInterface>>
+        watchers_;
+  };
+
+  // A map that tracks ConnectivityStateWatcherInterfaces using a particular
+  // health check service name.
+  //
+  // There is one entry in the map for each health check service name.
+  // Entries exist only as long as there are watchers using the
+  // corresponding service name.
+  //
+  // A health check client is maintained only while the subchannel is in
+  // state READY.
+  class HealthWatcherMap {
+   public:
+    void AddWatcherLocked(
+        Subchannel* subchannel, grpc_connectivity_state initial_state,
+        grpc_core::UniquePtr<char> health_check_service_name,
+        OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+    void RemoveWatcherLocked(const char* health_check_service_name,
+                             ConnectivityStateWatcherInterface* watcher);
+
+    // Notifies the watcher when the subchannel's state changes.
+    void NotifyLocked(grpc_connectivity_state state);
+
+    grpc_connectivity_state CheckConnectivityStateLocked(
+        Subchannel* subchannel, const char* health_check_service_name);
+
+    void ShutdownLocked();
+
+   private:
+    class HealthWatcher;
+
+    std::map<const char*, OrphanablePtr<HealthWatcher>, StringLess> map_;
+  };
+
+  class ConnectedSubchannelStateWatcher;
+
+  // Sets the subchannel's connectivity state to \a state.
+  void SetConnectivityStateLocked(grpc_connectivity_state state);
+
+  // Methods for connection.
+  void MaybeStartConnectingLocked();
+  static void OnRetryAlarm(void* arg, grpc_error* error);
+  void ContinueConnectingLocked();
+  static void OnConnectingFinished(void* arg, grpc_error* error);
+  bool PublishTransportLocked();
+  void Disconnect();
+
+  gpr_atm RefMutate(gpr_atm delta,
+                    int barrier GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS);
+
+  // The subchannel pool this subchannel is in.
+  RefCountedPtr<SubchannelPoolInterface> subchannel_pool_;
+  // TODO(juanlishen): Consider using args_ as key_ directly.
+  // Subchannel key that identifies this subchannel in the subchannel pool.
+  SubchannelKey* key_;
+  // Channel args.
+  grpc_channel_args* args_;
+  // pollset_set tracking who's interested in a connection being setup.
+  grpc_pollset_set* pollset_set_;
+  // Protects the other members.
+  Mutex mu_;
+  // Refcount
+  //    - lower INTERNAL_REF_BITS bits are for internal references:
+  //      these do not keep the subchannel open.
+  //    - upper remaining bits are for public references: these do
+  //      keep the subchannel open
+  gpr_atm ref_pair_;
+
+  // Connection states.
+  OrphanablePtr<SubchannelConnector> connector_;
+  // Set during connection.
+  SubchannelConnector::Result connecting_result_;
+  grpc_closure on_connecting_finished_;
+  // Active connection, or null.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  bool connecting_ = false;
+  bool disconnected_ = false;
+
+  // Connectivity state tracking.
+  grpc_connectivity_state state_ = GRPC_CHANNEL_IDLE;
+  // The list of watchers without a health check service name.
+  ConnectivityStateWatcherList watcher_list_;
+  // The map of watchers with health check service names.
+  HealthWatcherMap health_watcher_map_;
+
+  // Backoff state.
+  BackOff backoff_;
+  grpc_millis next_attempt_deadline_;
+  grpc_millis min_connect_timeout_ms_;
+  bool backoff_begun_ = false;
+
+  // Retry alarm.
+  grpc_timer retry_alarm_;
+  grpc_closure on_retry_alarm_;
+  bool have_retry_alarm_ = false;
+  // reset_backoff() was called while alarm was pending.
+  bool retry_immediately_ = false;
+
+  // Channelz tracking.
+  RefCountedPtr<channelz::SubchannelNode> channelz_node_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_interface.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_interface.h
new file mode 100644
index 0000000..f7a788a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_interface.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// The interface for subchannels that is exposed to LB policy implementations.
+class SubchannelInterface : public RefCounted<SubchannelInterface> {
+ public:
+  class ConnectivityStateWatcherInterface {
+   public:
+    virtual ~ConnectivityStateWatcherInterface() = default;
+
+    // Will be invoked whenever the subchannel's connectivity state
+    // changes.  There will be only one invocation of this method on a
+    // given watcher instance at any given time.
+    virtual void OnConnectivityStateChange(
+        grpc_connectivity_state new_state) = 0;
+
+    // TODO(roth): Remove this as soon as we move to EventManager-based
+    // polling.
+    virtual grpc_pollset_set* interested_parties() = 0;
+  };
+
+  template <typename TraceFlagT = TraceFlag>
+  explicit SubchannelInterface(TraceFlagT* trace_flag = nullptr)
+      : RefCounted<SubchannelInterface>(trace_flag) {}
+
+  virtual ~SubchannelInterface() = default;
+
+  // Returns the current connectivity state of the subchannel.
+  virtual grpc_connectivity_state CheckConnectivityState() = 0;
+
+  // Starts watching the subchannel's connectivity state.
+  // The first callback to the watcher will be delivered when the
+  // subchannel's connectivity state becomes a value other than
+  // initial_state, which may happen immediately.
+  // Subsequent callbacks will be delivered as the subchannel's state
+  // changes.
+  // The watcher will be destroyed either when the subchannel is
+  // destroyed or when CancelConnectivityStateWatch() is called.
+  // There can be only one watcher of a given subchannel.  It is not
+  // valid to call this method a second time without first cancelling
+  // the previous watcher using CancelConnectivityStateWatch().
+  virtual void WatchConnectivityState(
+      grpc_connectivity_state initial_state,
+      std::unique_ptr<ConnectivityStateWatcherInterface> watcher) = 0;
+
+  // Cancels a connectivity state watch.
+  // If the watcher has already been destroyed, this is a no-op.
+  virtual void CancelConnectivityStateWatch(
+      ConnectivityStateWatcherInterface* watcher) = 0;
+
+  // Attempt to connect to the backend.  Has no effect if already connected.
+  // If the subchannel is currently in backoff delay due to a previously
+  // failed attempt, the new connection attempt will not start until the
+  // backoff delay has elapsed.
+  virtual void AttemptToConnect() = 0;
+
+  // Resets the subchannel's connection backoff state.  If AttemptToConnect()
+  // has been called since the subchannel entered TRANSIENT_FAILURE state,
+  // starts a new connection attempt immediately; otherwise, a new connection
+  // attempt will be started as soon as AttemptToConnect() is called.
+  virtual void ResetBackoff() = 0;
+
+  // TODO(roth): Need a better non-grpc-specific abstraction here.
+  virtual const grpc_channel_args* channel_args() = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_pool_interface.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_pool_interface.h
new file mode 100644
index 0000000..2fe5fa3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/subchannel_pool_interface.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/avl/avl.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+
+namespace grpc_core {
+
+class Subchannel;
+
+extern TraceFlag grpc_subchannel_pool_trace;
+
+// A key that can uniquely identify a subchannel.
+class SubchannelKey {
+ public:
+  explicit SubchannelKey(const grpc_channel_args* args);
+  ~SubchannelKey();
+
+  // Copyable.
+  SubchannelKey(const SubchannelKey& other);
+  SubchannelKey& operator=(const SubchannelKey& other);
+  // Not movable.
+  SubchannelKey(SubchannelKey&&) = delete;
+  SubchannelKey& operator=(SubchannelKey&&) = delete;
+
+  int Cmp(const SubchannelKey& other) const;
+
+ private:
+  // Initializes the subchannel key with the given \a args and the function to
+  // copy channel args.
+  void Init(
+      const grpc_channel_args* args,
+      grpc_channel_args* (*copy_channel_args)(const grpc_channel_args* args));
+
+  const grpc_channel_args* args_;
+};
+
+// Interface for subchannel pool.
+// TODO(juanlishen): This refcounting mechanism may lead to memory leak.
+// To solve that, we should force polling to flush any pending callbacks, then
+// shut down safely. See https://github.com/grpc/grpc/issues/12560.
+class SubchannelPoolInterface : public RefCounted<SubchannelPoolInterface> {
+ public:
+  SubchannelPoolInterface() : RefCounted(&grpc_subchannel_pool_trace) {}
+  virtual ~SubchannelPoolInterface() {}
+
+  // Registers a subchannel against a key. Returns the subchannel registered
+  // with \a key, which may be different from \a constructed because we reuse
+  // (instead of update) any existing subchannel already registered with \a key.
+  virtual Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                         Subchannel* constructed) = 0;
+
+  // Removes the registered subchannel found by \a key.
+  virtual void UnregisterSubchannel(SubchannelKey* key) = 0;
+
+  // Finds the subchannel registered for the given subchannel key. Returns NULL
+  // if no such channel exists. Thread-safe.
+  virtual Subchannel* FindSubchannel(SubchannelKey* key) = 0;
+
+  // Creates a channel arg from \a subchannel pool.
+  static grpc_arg CreateChannelArg(SubchannelPoolInterface* subchannel_pool);
+
+  // Gets the subchannel pool from the channel args.
+  static SubchannelPoolInterface* GetSubchannelPoolFromChannelArgs(
+      const grpc_channel_args* args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_api.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_api.h
new file mode 100644
index 0000000..0fc4a18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_api.h	
@@ -0,0 +1,280 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+#include <set>
+
+#include "absl/types/optional.h"
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+
+namespace grpc_core {
+
+class XdsClient;
+
+class XdsApi {
+ public:
+  static const char* kLdsTypeUrl;
+  static const char* kRdsTypeUrl;
+  static const char* kCdsTypeUrl;
+  static const char* kEdsTypeUrl;
+
+  struct RdsUpdate {
+    // The name to use in the CDS request.
+    std::string cluster_name;
+
+    bool operator==(const RdsUpdate& other) const {
+      return cluster_name == other.cluster_name;
+    }
+  };
+
+  // TODO(roth): When we can use absl::variant<>, consider using that
+  // here, to enforce the fact that only one of the two fields can be set.
+  struct LdsUpdate {
+    // The name to use in the RDS request.
+    std::string route_config_name;
+    // The name to use in the CDS request. Present if the LDS response has it
+    // inlined.
+    absl::optional<RdsUpdate> rds_update;
+
+    bool operator==(const LdsUpdate& other) const {
+      return route_config_name == other.route_config_name &&
+             rds_update == other.rds_update;
+    }
+  };
+
+  using LdsUpdateMap = std::map<std::string /*server_name*/, LdsUpdate>;
+
+  using RdsUpdateMap = std::map<std::string /*route_config_name*/, RdsUpdate>;
+
+  struct CdsUpdate {
+    // The name to use in the EDS request.
+    // If empty, the cluster name will be used.
+    std::string eds_service_name;
+    // The LRS server to use for load reporting.
+    // If not set, load reporting will be disabled.
+    // If set to the empty string, will use the same server we obtained the CDS
+    // data from.
+    absl::optional<std::string> lrs_load_reporting_server_name;
+  };
+
+  using CdsUpdateMap = std::map<std::string /*cluster_name*/, CdsUpdate>;
+
+  class PriorityListUpdate {
+   public:
+    struct LocalityMap {
+      struct Locality {
+        bool operator==(const Locality& other) const {
+          return *name == *other.name && serverlist == other.serverlist &&
+                 lb_weight == other.lb_weight && priority == other.priority;
+        }
+
+        // This comparator only compares the locality names.
+        struct Less {
+          bool operator()(const Locality& lhs, const Locality& rhs) const {
+            return XdsLocalityName::Less()(lhs.name, rhs.name);
+          }
+        };
+
+        RefCountedPtr<XdsLocalityName> name;
+        ServerAddressList serverlist;
+        uint32_t lb_weight;
+        uint32_t priority;
+      };
+
+      bool Contains(const RefCountedPtr<XdsLocalityName>& name) const {
+        return localities.find(name) != localities.end();
+      }
+
+      size_t size() const { return localities.size(); }
+
+      std::map<RefCountedPtr<XdsLocalityName>, Locality, XdsLocalityName::Less>
+          localities;
+    };
+
+    bool operator==(const PriorityListUpdate& other) const;
+    bool operator!=(const PriorityListUpdate& other) const {
+      return !(*this == other);
+    }
+
+    void Add(LocalityMap::Locality locality);
+
+    const LocalityMap* Find(uint32_t priority) const;
+
+    bool Contains(uint32_t priority) const {
+      return priority < priorities_.size();
+    }
+    bool Contains(const RefCountedPtr<XdsLocalityName>& name);
+
+    bool empty() const { return priorities_.empty(); }
+    size_t size() const { return priorities_.size(); }
+
+    // Callers should make sure the priority list is non-empty.
+    uint32_t LowestPriority() const {
+      return static_cast<uint32_t>(priorities_.size()) - 1;
+    }
+
+   private:
+    InlinedVector<LocalityMap, 2> priorities_;
+  };
+
+  // There are two phases of accessing this class's content:
+  // 1. to initialize in the control plane combiner;
+  // 2. to use in the data plane combiner.
+  // So no additional synchronization is needed.
+  class DropConfig : public RefCounted<DropConfig> {
+   public:
+    struct DropCategory {
+      bool operator==(const DropCategory& other) const {
+        return name == other.name &&
+               parts_per_million == other.parts_per_million;
+      }
+
+      std::string name;
+      const uint32_t parts_per_million;
+    };
+
+    using DropCategoryList = InlinedVector<DropCategory, 2>;
+
+    void AddCategory(std::string name, uint32_t parts_per_million) {
+      drop_category_list_.emplace_back(
+          DropCategory{std::move(name), parts_per_million});
+      if (parts_per_million == 1000000) drop_all_ = true;
+    }
+
+    // The only method invoked from the data plane combiner.
+    bool ShouldDrop(const std::string** category_name) const;
+
+    const DropCategoryList& drop_category_list() const {
+      return drop_category_list_;
+    }
+
+    bool drop_all() const { return drop_all_; }
+
+    bool operator==(const DropConfig& other) const {
+      return drop_category_list_ == other.drop_category_list_;
+    }
+    bool operator!=(const DropConfig& other) const { return !(*this == other); }
+
+   private:
+    DropCategoryList drop_category_list_;
+    bool drop_all_ = false;
+  };
+
+  struct EdsUpdate {
+    PriorityListUpdate priority_list_update;
+    RefCountedPtr<DropConfig> drop_config;
+  };
+
+  using EdsUpdateMap = std::map<std::string /*eds_service_name*/, EdsUpdate>;
+
+  struct ClusterLoadReport {
+    XdsClusterDropStats::DroppedRequestsMap dropped_requests;
+    std::map<RefCountedPtr<XdsLocalityName>, XdsClusterLocalityStats::Snapshot,
+             XdsLocalityName::Less>
+        locality_stats;
+    grpc_millis load_report_interval;
+  };
+  using ClusterLoadReportMap = std::map<
+      std::pair<std::string /*cluster_name*/, std::string /*eds_service_name*/>,
+      ClusterLoadReport>;
+
+  XdsApi(XdsClient* client, TraceFlag* tracer, const XdsBootstrap::Node* node);
+
+  // Creates a request to nack an unsupported resource type.
+  // Takes ownership of \a error.
+  grpc_slice CreateUnsupportedTypeNackRequest(const std::string& type_url,
+                                              const std::string& nonce,
+                                              grpc_error* error);
+
+  // Creates an LDS request querying \a server_name.
+  // Takes ownership of \a error.
+  grpc_slice CreateLdsRequest(const std::string& server_name,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates an RDS request querying \a route_config_name.
+  // Takes ownership of \a error.
+  grpc_slice CreateRdsRequest(const std::string& route_config_name,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates a CDS request querying \a cluster_names.
+  // Takes ownership of \a error.
+  grpc_slice CreateCdsRequest(const std::set<StringView>& cluster_names,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates an EDS request querying \a eds_service_names.
+  // Takes ownership of \a error.
+  grpc_slice CreateEdsRequest(const std::set<StringView>& eds_service_names,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Parses the ADS response and outputs the validated update for either CDS or
+  // EDS. If the response can't be parsed at the top level, \a type_url will
+  // point to an empty string; otherwise, it will point to the received data.
+  grpc_error* ParseAdsResponse(
+      const grpc_slice& encoded_response,
+      const std::string& expected_server_name,
+      const std::string& expected_route_config_name,
+      const std::set<StringView>& expected_cluster_names,
+      const std::set<StringView>& expected_eds_service_names,
+      absl::optional<LdsUpdate>* lds_update,
+      absl::optional<RdsUpdate>* rds_update, CdsUpdateMap* cds_update_map,
+      EdsUpdateMap* eds_update_map, std::string* version, std::string* nonce,
+      std::string* type_url);
+
+  // Creates an LRS request querying \a server_name.
+  grpc_slice CreateLrsInitialRequest(const std::string& server_name);
+
+  // Creates an LRS request sending a client-side load report.
+  grpc_slice CreateLrsRequest(ClusterLoadReportMap cluster_load_report_map);
+
+  // Parses the LRS response and returns \a
+  // load_reporting_interval for client-side load reporting. If there is any
+  // error, the output config is invalid.
+  grpc_error* ParseLrsResponse(const grpc_slice& encoded_response,
+                               std::set<std::string>* cluster_names,
+                               grpc_millis* load_reporting_interval);
+
+ private:
+  XdsClient* client_;
+  TraceFlag* tracer_;
+  const XdsBootstrap::Node* node_;
+  const std::string build_version_;
+  const std::string user_agent_name_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_bootstrap.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_bootstrap.h
new file mode 100644
index 0000000..d3b04ad
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_bootstrap.h	
@@ -0,0 +1,87 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <grpc/impl/codegen/slice.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+namespace grpc_core {
+
+class XdsClient;
+
+class XdsBootstrap {
+ public:
+  struct Node {
+    std::string id;
+    std::string cluster;
+    std::string locality_region;
+    std::string locality_zone;
+    std::string locality_subzone;
+    Json metadata;
+  };
+
+  struct ChannelCreds {
+    std::string type;
+    Json config;
+  };
+
+  struct XdsServer {
+    std::string server_uri;
+    InlinedVector<ChannelCreds, 1> channel_creds;
+  };
+
+  // If *error is not GRPC_ERROR_NONE after returning, then there was an
+  // error reading the file.
+  static std::unique_ptr<XdsBootstrap> ReadFromFile(XdsClient* client,
+                                                    TraceFlag* tracer,
+                                                    grpc_error** error);
+
+  // Do not instantiate directly -- use ReadFromFile() above instead.
+  XdsBootstrap(Json json, grpc_error** error);
+
+  // TODO(roth): We currently support only one server. Fix this when we
+  // add support for fallback for the xds channel.
+  const XdsServer& server() const { return servers_[0]; }
+  const Node* node() const { return node_.get(); }
+
+ private:
+  grpc_error* ParseXdsServerList(Json* json);
+  grpc_error* ParseXdsServer(Json* json, size_t idx);
+  grpc_error* ParseChannelCredsArray(Json* json, XdsServer* server);
+  grpc_error* ParseChannelCreds(Json* json, size_t idx, XdsServer* server);
+  grpc_error* ParseNode(Json* json);
+  grpc_error* ParseLocality(Json* json);
+
+  InlinedVector<XdsServer, 1> servers_;
+  std::unique_ptr<Node> node_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel.h
new file mode 100644
index 0000000..f78c0ba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/lib/iomgr/error.h"
+
+namespace grpc_core {
+
+/// Makes any necessary modifications to \a args for use in the xds
+/// balancer channel.
+///
+/// Takes ownership of \a args.
+///
+/// Caller takes ownership of the returned args.
+grpc_channel_args* ModifyXdsChannelArgs(grpc_channel_args* args);
+
+grpc_channel* CreateXdsChannel(const XdsBootstrap& bootstrap,
+                               const grpc_channel_args& args,
+                               grpc_error** error);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel_args.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel_args.h
new file mode 100644
index 0000000..cabdc51
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_channel_args.h	
@@ -0,0 +1,26 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H
+
+// Boolean channel arg indicating whether the target is an xds server.
+#define GRPC_ARG_ADDRESS_IS_XDS_SERVER "grpc.address_is_xds_server"
+
+// Pointer channel arg containing a ref to the XdsClient object.
+#define GRPC_ARG_XDS_CLIENT "grpc.xds_client"
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client.h
new file mode 100644
index 0000000..c6ef4f8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client.h	
@@ -0,0 +1,274 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <set>
+
+#include "absl/types/optional.h"
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/xds/xds_api.h"
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+namespace grpc_core {
+
+extern TraceFlag xds_client_trace;
+
+class XdsClient : public InternallyRefCounted<XdsClient> {
+ public:
+  // Service config watcher interface.  Implemented by callers.
+  class ServiceConfigWatcherInterface {
+   public:
+    virtual ~ServiceConfigWatcherInterface() = default;
+
+    virtual void OnServiceConfigChanged(
+        RefCountedPtr<ServiceConfig> service_config) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // Cluster data watcher interface.  Implemented by callers.
+  class ClusterWatcherInterface {
+   public:
+    virtual ~ClusterWatcherInterface() = default;
+
+    virtual void OnClusterChanged(XdsApi::CdsUpdate cluster_data) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // Endpoint data watcher interface.  Implemented by callers.
+  class EndpointWatcherInterface {
+   public:
+    virtual ~EndpointWatcherInterface() = default;
+
+    virtual void OnEndpointChanged(XdsApi::EdsUpdate update) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // If *error is not GRPC_ERROR_NONE after construction, then there was
+  // an error initializing the client.
+  XdsClient(Combiner* combiner, grpc_pollset_set* interested_parties,
+            StringView server_name,
+            std::unique_ptr<ServiceConfigWatcherInterface> watcher,
+            const grpc_channel_args& channel_args, grpc_error** error);
+  ~XdsClient();
+
+  void Orphan() override;
+
+  // Start and cancel cluster data watch for a cluster.
+  // The XdsClient takes ownership of the watcher, but the caller may
+  // keep a raw pointer to the watcher, which may be used only for
+  // cancellation.  (Because the caller does not own the watcher, the
+  // pointer must not be used for any other purpose.)
+  // If the caller is going to start a new watch after cancelling the
+  // old one, it should set delay_unsubscription to true.
+  void WatchClusterData(StringView cluster_name,
+                        std::unique_ptr<ClusterWatcherInterface> watcher);
+  void CancelClusterDataWatch(StringView cluster_name,
+                              ClusterWatcherInterface* watcher,
+                              bool delay_unsubscription = false);
+
+  // Start and cancel endpoint data watch for a cluster.
+  // The XdsClient takes ownership of the watcher, but the caller may
+  // keep a raw pointer to the watcher, which may be used only for
+  // cancellation.  (Because the caller does not own the watcher, the
+  // pointer must not be used for any other purpose.)
+  // If the caller is going to start a new watch after cancelling the
+  // old one, it should set delay_unsubscription to true.
+  void WatchEndpointData(StringView eds_service_name,
+                         std::unique_ptr<EndpointWatcherInterface> watcher);
+  void CancelEndpointDataWatch(StringView eds_service_name,
+                               EndpointWatcherInterface* watcher,
+                               bool delay_unsubscription = false);
+
+  // Adds and removes drop stats for cluster_name and eds_service_name.
+  RefCountedPtr<XdsClusterDropStats> AddClusterDropStats(
+      StringView lrs_server, StringView cluster_name,
+      StringView eds_service_name);
+  void RemoveClusterDropStats(StringView /*lrs_server*/,
+                              StringView cluster_name,
+                              StringView eds_service_name,
+                              XdsClusterDropStats* cluster_drop_stats);
+
+  // Adds and removes locality stats for cluster_name and eds_service_name
+  // for the specified locality.
+  RefCountedPtr<XdsClusterLocalityStats> AddClusterLocalityStats(
+      StringView lrs_server, StringView cluster_name,
+      StringView eds_service_name, RefCountedPtr<XdsLocalityName> locality);
+  void RemoveClusterLocalityStats(
+      StringView /*lrs_server*/, StringView cluster_name,
+      StringView eds_service_name,
+      const RefCountedPtr<XdsLocalityName>& locality,
+      XdsClusterLocalityStats* cluster_locality_stats);
+
+  // Resets connection backoff state.
+  void ResetBackoff();
+
+  // Helpers for encoding the XdsClient object in channel args.
+  grpc_arg MakeChannelArg() const;
+  static RefCountedPtr<XdsClient> GetFromChannelArgs(
+      const grpc_channel_args& args);
+
+ private:
+  // Contains a channel to the xds server and all the data related to the
+  // channel.  Holds a ref to the xds client object.
+  // TODO(roth): This is separate from the XdsClient object because it was
+  // originally designed to be able to swap itself out in case the
+  // balancer name changed.  Now that the balancer name is going to be
+  // coming from the bootstrap file, we don't really need this level of
+  // indirection unless we decide to support watching the bootstrap file
+  // for changes.  At some point, if we decide that we're never going to
+  // need to do that, then we can eliminate this class and move its
+  // contents directly into the XdsClient class.
+  class ChannelState : public InternallyRefCounted<ChannelState> {
+   public:
+    template <typename T>
+    class RetryableCall;
+
+    class AdsCallState;
+    class LrsCallState;
+
+    ChannelState(RefCountedPtr<XdsClient> xds_client, grpc_channel* channel);
+    ~ChannelState();
+
+    void Orphan() override;
+
+    grpc_channel* channel() const { return channel_; }
+    XdsClient* xds_client() const { return xds_client_.get(); }
+    AdsCallState* ads_calld() const;
+    LrsCallState* lrs_calld() const;
+
+    void MaybeStartLrsCall();
+    void StopLrsCall();
+
+    bool HasActiveAdsCall() const;
+
+    void StartConnectivityWatchLocked();
+    void CancelConnectivityWatchLocked();
+
+    void Subscribe(const std::string& type_url, const std::string& name);
+    void Unsubscribe(const std::string& type_url, const std::string& name,
+                     bool delay_unsubscription);
+
+   private:
+    class StateWatcher;
+
+    // The owning xds client.
+    RefCountedPtr<XdsClient> xds_client_;
+
+    // The channel and its status.
+    grpc_channel* channel_;
+    bool shutting_down_ = false;
+    StateWatcher* watcher_ = nullptr;
+
+    // The retryable XDS calls.
+    OrphanablePtr<RetryableCall<AdsCallState>> ads_calld_;
+    OrphanablePtr<RetryableCall<LrsCallState>> lrs_calld_;
+  };
+
+  struct ClusterState {
+    std::map<ClusterWatcherInterface*, std::unique_ptr<ClusterWatcherInterface>>
+        watchers;
+    // The latest data seen from CDS.
+    absl::optional<XdsApi::CdsUpdate> update;
+  };
+
+  struct EndpointState {
+    std::map<EndpointWatcherInterface*,
+             std::unique_ptr<EndpointWatcherInterface>>
+        watchers;
+    // The latest data seen from EDS.
+    absl::optional<XdsApi::EdsUpdate> update;
+  };
+
+  struct LoadReportState {
+    struct LocalityState {
+      std::set<XdsClusterLocalityStats*> locality_stats;
+      std::vector<XdsClusterLocalityStats::Snapshot> deleted_locality_stats;
+    };
+
+    std::set<XdsClusterDropStats*> drop_stats;
+    XdsClusterDropStats::DroppedRequestsMap deleted_drop_stats;
+    std::map<RefCountedPtr<XdsLocalityName>, LocalityState,
+             XdsLocalityName::Less>
+        locality_stats;
+    grpc_millis last_report_time = ExecCtx::Get()->Now();
+  };
+
+  // Sends an error notification to all watchers.
+  void NotifyOnError(grpc_error* error);
+
+  grpc_error* CreateServiceConfig(
+      const std::string& cluster_name,
+      RefCountedPtr<ServiceConfig>* service_config) const;
+
+  XdsApi::ClusterLoadReportMap BuildLoadReportSnapshot(
+      const std::set<std::string>& clusters);
+
+  // Channel arg vtable functions.
+  static void* ChannelArgCopy(void* p);
+  static void ChannelArgDestroy(void* p);
+  static int ChannelArgCmp(void* p, void* q);
+
+  static const grpc_arg_pointer_vtable kXdsClientVtable;
+
+  const grpc_millis request_timeout_;
+
+  Combiner* combiner_;
+  grpc_pollset_set* interested_parties_;
+
+  std::unique_ptr<XdsBootstrap> bootstrap_;
+  XdsApi api_;
+
+  const std::string server_name_;
+
+  std::unique_ptr<ServiceConfigWatcherInterface> service_config_watcher_;
+
+  // The channel for communicating with the xds server.
+  OrphanablePtr<ChannelState> chand_;
+
+  absl::optional<XdsApi::LdsUpdate> lds_result_;
+  absl::optional<XdsApi::RdsUpdate> rds_result_;
+
+  // One entry for each watched CDS resource.
+  std::map<std::string /*cluster_name*/, ClusterState> cluster_map_;
+  // One entry for each watched EDS resource.
+  std::map<std::string /*eds_service_name*/, EndpointState> endpoint_map_;
+  std::map<
+      std::pair<std::string /*cluster_name*/, std::string /*eds_service_name*/>,
+      LoadReportState>
+      load_report_map_;
+
+  bool shutting_down_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client_stats.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client_stats.h
new file mode 100644
index 0000000..ab592ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/client_channel/xds/xds_client_stats.h	
@@ -0,0 +1,199 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+// Forward declaration to avoid circular dependency.
+class XdsClient;
+
+// Locality name.
+class XdsLocalityName : public RefCounted<XdsLocalityName> {
+ public:
+  struct Less {
+    bool operator()(const XdsLocalityName* lhs,
+                    const XdsLocalityName* rhs) const {
+      int cmp_result = lhs->region_.compare(rhs->region_);
+      if (cmp_result != 0) return cmp_result < 0;
+      cmp_result = lhs->zone_.compare(rhs->zone_);
+      if (cmp_result != 0) return cmp_result < 0;
+      return lhs->sub_zone_.compare(rhs->sub_zone_) < 0;
+    }
+
+    bool operator()(const RefCountedPtr<XdsLocalityName>& lhs,
+                    const RefCountedPtr<XdsLocalityName>& rhs) const {
+      return (*this)(lhs.get(), rhs.get());
+    }
+  };
+
+  XdsLocalityName(std::string region, std::string zone, std::string subzone)
+      : region_(std::move(region)),
+        zone_(std::move(zone)),
+        sub_zone_(std::move(subzone)) {}
+
+  bool operator==(const XdsLocalityName& other) const {
+    return region_ == other.region_ && zone_ == other.zone_ &&
+           sub_zone_ == other.sub_zone_;
+  }
+
+  const std::string& region() const { return region_; }
+  const std::string& zone() const { return zone_; }
+  const std::string& sub_zone() const { return sub_zone_; }
+
+  const char* AsHumanReadableString() {
+    if (human_readable_string_ == nullptr) {
+      char* tmp;
+      gpr_asprintf(&tmp, "{region=\"%s\", zone=\"%s\", sub_zone=\"%s\"}",
+                   region_.c_str(), zone_.c_str(), sub_zone_.c_str());
+      human_readable_string_.reset(tmp);
+    }
+    return human_readable_string_.get();
+  }
+
+ private:
+  std::string region_;
+  std::string zone_;
+  std::string sub_zone_;
+  UniquePtr<char> human_readable_string_;
+};
+
+// Drop stats for an xds cluster.
+class XdsClusterDropStats : public RefCounted<XdsClusterDropStats> {
+ public:
+  using DroppedRequestsMap = std::map<std::string /* category */, uint64_t>;
+
+  XdsClusterDropStats(RefCountedPtr<XdsClient> xds_client,
+                      StringView lrs_server_name, StringView cluster_name,
+                      StringView eds_service_name);
+  ~XdsClusterDropStats();
+
+  // Returns a snapshot of this instance and resets all the counters.
+  DroppedRequestsMap GetSnapshotAndReset();
+
+  void AddCallDropped(const std::string& category);
+
+ private:
+  RefCountedPtr<XdsClient> xds_client_;
+  StringView lrs_server_name_;
+  StringView cluster_name_;
+  StringView eds_service_name_;
+  // Protects dropped_requests_. A mutex is necessary because the length of
+  // dropped_requests_ can be accessed by both the picker (from data plane
+  // mutex) and the load reporting thread (from the control plane combiner).
+  Mutex mu_;
+  DroppedRequestsMap dropped_requests_;
+};
+
+// Locality stats for an xds cluster.
+class XdsClusterLocalityStats : public RefCounted<XdsClusterLocalityStats> {
+ public:
+  struct BackendMetric {
+    uint64_t num_requests_finished_with_metric;
+    double total_metric_value;
+
+    BackendMetric& operator+=(const BackendMetric& other) {
+      num_requests_finished_with_metric +=
+          other.num_requests_finished_with_metric;
+      total_metric_value += other.total_metric_value;
+      return *this;
+    }
+
+    bool IsZero() const {
+      return num_requests_finished_with_metric == 0 && total_metric_value == 0;
+    }
+  };
+
+  struct Snapshot {
+    uint64_t total_successful_requests;
+    uint64_t total_requests_in_progress;
+    uint64_t total_error_requests;
+    uint64_t total_issued_requests;
+    std::map<std::string, BackendMetric> backend_metrics;
+
+    Snapshot& operator+=(const Snapshot& other) {
+      total_successful_requests += other.total_successful_requests;
+      total_requests_in_progress += other.total_requests_in_progress;
+      total_error_requests += other.total_error_requests;
+      total_issued_requests += other.total_issued_requests;
+      for (const auto& p : other.backend_metrics) {
+        backend_metrics[p.first] += p.second;
+      }
+      return *this;
+    }
+
+    bool IsZero() const {
+      if (total_successful_requests != 0 || total_requests_in_progress != 0 ||
+          total_error_requests != 0 || total_issued_requests != 0) {
+        return false;
+      }
+      for (const auto& p : backend_metrics) {
+        if (!p.second.IsZero()) return false;
+      }
+      return true;
+    }
+  };
+
+  XdsClusterLocalityStats(RefCountedPtr<XdsClient> xds_client,
+                          StringView lrs_server_name, StringView cluster_name,
+                          StringView eds_service_name,
+                          RefCountedPtr<XdsLocalityName> name);
+  ~XdsClusterLocalityStats();
+
+  // Returns a snapshot of this instance and resets all the counters.
+  Snapshot GetSnapshotAndReset();
+
+  void AddCallStarted();
+  void AddCallFinished(bool fail = false);
+
+ private:
+  RefCountedPtr<XdsClient> xds_client_;
+  StringView lrs_server_name_;
+  StringView cluster_name_;
+  StringView eds_service_name_;
+  RefCountedPtr<XdsLocalityName> name_;
+
+  Atomic<uint64_t> total_successful_requests_{0};
+  Atomic<uint64_t> total_requests_in_progress_{0};
+  Atomic<uint64_t> total_error_requests_{0};
+  Atomic<uint64_t> total_issued_requests_{0};
+
+  // Protects backend_metrics_. A mutex is necessary because the length of
+  // backend_metrics_ can be accessed by both the callback intercepting the
+  // call's recv_trailing_metadata (not from the control plane combiner) and
+  // the load reporting thread (from the control plane combiner).
+  Mutex backend_metrics_mu_;
+  std::map<std::string, BackendMetric> backend_metrics_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/deadline/deadline_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/deadline/deadline_filter.h
new file mode 100644
index 0000000..7c4e9aa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/deadline/deadline_filter.h	
@@ -0,0 +1,90 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/iomgr/timer.h"
+
+enum grpc_deadline_timer_state {
+  GRPC_DEADLINE_STATE_INITIAL,
+  GRPC_DEADLINE_STATE_PENDING,
+  GRPC_DEADLINE_STATE_FINISHED
+};
+
+// State used for filters that enforce call deadlines.
+// Must be the first field in the filter's call_data.
+struct grpc_deadline_state {
+  grpc_deadline_state(grpc_call_element* elem, grpc_call_stack* call_stack,
+                      grpc_core::CallCombiner* call_combiner,
+                      grpc_millis deadline);
+  ~grpc_deadline_state();
+
+  // We take a reference to the call stack for the timer callback.
+  grpc_call_stack* call_stack;
+  grpc_core::CallCombiner* call_combiner;
+  grpc_deadline_timer_state timer_state = GRPC_DEADLINE_STATE_INITIAL;
+  grpc_timer timer;
+  grpc_closure timer_callback;
+  // Closure to invoke when we receive trailing metadata.
+  // We use this to cancel the timer.
+  grpc_closure recv_trailing_metadata_ready;
+  // The original recv_trailing_metadata_ready closure, which we chain to
+  // after our own closure is invoked.
+  grpc_closure* original_recv_trailing_metadata_ready;
+};
+
+//
+// NOTE: All of these functions require that the first field in
+// elem->call_data is a grpc_deadline_state.
+//
+
+// Cancels the existing timer and starts a new one with new_deadline.
+//
+// Note: It is generally safe to call this with an earlier deadline
+// value than the current one, but not the reverse.  No checks are done
+// to ensure that the timer callback is not invoked while it is in the
+// process of being reset, which means that attempting to increase the
+// deadline may result in the timer being called twice.
+//
+// Note: Must be called while holding the call combiner.
+void grpc_deadline_state_reset(grpc_call_element* elem,
+                               grpc_millis new_deadline);
+
+// To be called from the client-side filter's start_transport_stream_op_batch()
+// method.  Ensures that the deadline timer is cancelled when the call
+// is completed.
+//
+// Note: It is the caller's responsibility to chain to the next filter if
+// necessary after this function returns.
+//
+// Note: Must be called while holding the call combiner.
+void grpc_deadline_state_client_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op);
+
+// Should deadline checking be performed (according to channel args)
+bool grpc_deadline_checking_enabled(const grpc_channel_args* args);
+
+// Deadline filters for direct client channels and server channels.
+// Note: Deadlines for non-direct client channels are handled by the
+// client_channel filter.
+extern const grpc_channel_filter grpc_client_deadline_filter;
+extern const grpc_channel_filter grpc_server_deadline_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client/http_client_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client/http_client_filter.h
new file mode 100644
index 0000000..a2f16dd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client/http_client_filter.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/* Processes metadata on the client side for HTTP2 transports */
+extern const grpc_channel_filter grpc_http_client_filter;
+
+/* Channel arg to determine maximum size of payload eligible for GET request */
+#define GRPC_ARG_MAX_PAYLOAD_SIZE_FOR_GET "grpc.max_payload_size_for_get"
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client_authority_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client_authority_filter.h
new file mode 100644
index 0000000..5824e91
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/client_authority_filter.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/// Filter responsible for setting the authority header, if not already set. It
+/// uses the value of the GRPC_ARG_DEFAULT_AUTHORITY channel arg if the initial
+/// metadata doesn't already contain an authority value.
+
+extern const grpc_channel_filter grpc_client_authority_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/message_compress/message_compress_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/message_compress/message_compress_filter.h
new file mode 100644
index 0000000..e163e3c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/message_compress/message_compress_filter.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/** Compression filter for outgoing data.
+ *
+ * See <grpc/compression.h> for the available compression settings.
+ *
+ * Compression settings may come from:
+ *  - Channel configuration, as established at channel creation time.
+ *  - The metadata accompanying the outgoing data to be compressed. This is
+ *    taken as a request only. We may choose not to honor it. The metadata key
+ *    is given by \a GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY.
+ *
+ * Compression can be disabled for concrete messages (for instance in order to
+ * prevent CRIME/BEAST type attacks) by having the GRPC_WRITE_NO_COMPRESS set in
+ * the BEGIN_MESSAGE flags.
+ *
+ * The attempted compression mechanism is added to the resulting initial
+ * metadata under the'grpc-encoding' key.
+ *
+ * If compression is actually performed, BEGIN_MESSAGE's flag is modified to
+ * incorporate GRPC_WRITE_INTERNAL_COMPRESS. Otherwise, and regardless of the
+ * aforementioned 'grpc-encoding' metadata value, data will pass through
+ * uncompressed. */
+
+extern const grpc_channel_filter grpc_message_compress_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/server/http_server_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/server/http_server_filter.h
new file mode 100644
index 0000000..e4e0546
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/http/server/http_server_filter.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/* Processes metadata on the server side for HTTP2 transports */
+extern const grpc_channel_filter grpc_http_server_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/max_age/max_age_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/max_age/max_age_filter.h
new file mode 100644
index 0000000..9893222
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/max_age/max_age_filter.h	
@@ -0,0 +1,26 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_max_age_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/message_size/message_size_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/message_size/message_size_filter.h
new file mode 100644
index 0000000..58c1fac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/message_size/message_size_filter.h	
@@ -0,0 +1,59 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_message_size_filter;
+
+namespace grpc_core {
+
+class MessageSizeParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct message_size_limits {
+    int max_send_size;
+    int max_recv_size;
+  };
+
+  MessageSizeParsedConfig(int max_send_size, int max_recv_size) {
+    limits_.max_send_size = max_send_size;
+    limits_.max_recv_size = max_recv_size;
+  }
+
+  const message_size_limits& limits() const { return limits_; }
+
+ private:
+  message_size_limits limits_;
+};
+
+class MessageSizeParser : public ServiceConfig::Parser {
+ public:
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParsePerMethodParams(
+      const Json& json, grpc_error** error) override;
+
+  static void Register();
+
+  static size_t ParserIndex();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h
new file mode 100644
index 0000000..94d20f0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h	
@@ -0,0 +1,27 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_workaround_cronet_compression_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_utils.h
new file mode 100644
index 0000000..f172ccc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/filters/workarounds/workaround_utils.h	
@@ -0,0 +1,39 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H
+#define GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/workaround_list.h>
+
+#include "src/core/lib/transport/metadata.h"
+
+#define GRPC_WORKAROUND_PRIORITY_HIGH 10001
+#define GRPC_WORKAROUND_PROIRITY_LOW 9999
+
+typedef struct grpc_workaround_user_agent_md {
+  bool workaround_active[GRPC_MAX_WORKAROUND_ID];
+} grpc_workaround_user_agent_md;
+
+grpc_workaround_user_agent_md* grpc_parse_user_agent(grpc_mdelem md);
+
+typedef bool (*user_agent_parser)(grpc_mdelem);
+
+void grpc_register_workaround(uint32_t id, user_agent_parser parser);
+
+#endif /* GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/alpn/alpn.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/alpn/alpn.h
new file mode 100644
index 0000000..e2ffe4e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/alpn/alpn.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+/* Returns 1 if the version is supported, 0 otherwise. */
+int grpc_chttp2_is_alpn_version_supported(const char* version, size_t size);
+
+/* Returns the number of protocol versions to advertise */
+size_t grpc_chttp2_num_alpn_versions(void);
+
+/* Returns the protocol version at index i (0 <= i <
+ * grpc_chttp2_num_alpn_versions()) */
+const char* grpc_chttp2_get_alpn_version_index(size_t i);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/authority.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/authority.h
new file mode 100644
index 0000000..642584e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/authority.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/memory.h"
+
+/// Returns a copy of \a args with the default authority channel arg set if it
+/// wasn't already present.
+grpc_channel_args* grpc_default_authority_add_if_not_present(
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/chttp2_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/chttp2_connector.h
new file mode 100644
index 0000000..1ecd172
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/client/chttp2_connector.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/connector.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+
+namespace grpc_core {
+
+class Chttp2Connector : public SubchannelConnector {
+ public:
+  Chttp2Connector();
+  ~Chttp2Connector();
+
+  void Connect(const Args& args, Result* result, grpc_closure* notify) override;
+  void Shutdown(grpc_error* error) override;
+
+ private:
+  static void Connected(void* arg, grpc_error* error);
+  void StartHandshakeLocked();
+  static void OnHandshakeDone(void* arg, grpc_error* error);
+
+  Mutex mu_;
+  Args args_;
+  Result* result_ = nullptr;
+  grpc_closure* notify_ = nullptr;
+  bool shutdown_ = false;
+  bool connecting_ = false;
+  // Holds the endpoint when first created before being handed off to
+  // the handshake manager.
+  grpc_endpoint* endpoint_ = nullptr;
+  grpc_closure connected_;
+  RefCountedPtr<HandshakeManager> handshake_mgr_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/server/chttp2_server.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/server/chttp2_server.h
new file mode 100644
index 0000000..6e51001
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/server/chttp2_server.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/// Adds a port to \a server.  Sets \a port_num to the port number.
+/// Takes ownership of \a args.
+grpc_error* grpc_chttp2_server_add_port(grpc_server* server, const char* addr,
+                                        grpc_channel_args* args, int* port_num);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_decoder.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_decoder.h
new file mode 100644
index 0000000..1cbca03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_decoder.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <stdbool.h>
+
+struct grpc_base64_decode_context {
+  /* input/output: */
+  const uint8_t* input_cur;
+  const uint8_t* input_end;
+  uint8_t* output_cur;
+  uint8_t* output_end;
+  /* Indicate if the decoder should handle the tail of input data*/
+  bool contains_tail;
+};
+
+/* base64 decode a grpc_base64_decode_context util either input_end is reached
+   or output_end is reached. When input_end is reached, (input_end - input_cur)
+   is less than 4. When output_end is reached, (output_end - output_cur) is less
+   than 3. Returns false if decoding is failed. */
+bool grpc_base64_decode_partial(struct grpc_base64_decode_context* ctx);
+
+/* base64 decode a slice with pad chars. Returns a new slice, does not take
+   ownership of the input. Returns an empty slice if decoding is failed. */
+grpc_slice grpc_chttp2_base64_decode(const grpc_slice& input);
+
+/* base64 decode a slice without pad chars, data length is needed. Returns a new
+   slice, does not take ownership of the input. Returns an empty slice if
+   decoding is failed. */
+grpc_slice grpc_chttp2_base64_decode_with_length(const grpc_slice& input,
+                                                 size_t output_length);
+
+/* Infer the length of decoded data from encoded data. */
+size_t grpc_chttp2_base64_infer_length_after_decode(const grpc_slice& slice);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_encoder.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_encoder.h
new file mode 100644
index 0000000..4f7ee67
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/bin_encoder.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+/* base64 encode a slice. Returns a new slice, does not take ownership of the
+   input */
+grpc_slice grpc_chttp2_base64_encode(const grpc_slice& input);
+
+/* Compress a slice with the static huffman encoder detailed in the hpack
+   standard. Returns a new slice, does not take ownership of the input */
+grpc_slice grpc_chttp2_huffman_compress(const grpc_slice& input);
+
+/* equivalent to:
+   grpc_slice x = grpc_chttp2_base64_encode(input);
+   grpc_slice y = grpc_chttp2_huffman_compress(x);
+   grpc_slice_unref_internal( x);
+   return y; */
+grpc_slice grpc_chttp2_base64_encode_and_huffman_compress(
+    const grpc_slice& input);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/chttp2_transport.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/chttp2_transport.h
new file mode 100644
index 0000000..39574f9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/chttp2_transport.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/transport/transport.h"
+
+extern grpc_core::TraceFlag grpc_http_trace;
+extern grpc_core::TraceFlag grpc_trace_http2_stream_state;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_refcount;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_hpack_parser;
+
+extern bool g_flow_control_enabled;
+
+grpc_transport* grpc_create_chttp2_transport(
+    const grpc_channel_args* channel_args, grpc_endpoint* ep, bool is_client,
+    grpc_resource_user* resource_user = nullptr);
+
+grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>
+grpc_chttp2_transport_get_socket_node(grpc_transport* transport);
+
+/// Takes ownership of \a read_buffer, which (if non-NULL) contains
+/// leftover bytes previously read from the endpoint (e.g., by handshakers).
+/// If non-null, \a notify_on_receive_settings will be scheduled when
+/// HTTP/2 settings are received from the peer.
+void grpc_chttp2_transport_start_reading(
+    grpc_transport* transport, grpc_slice_buffer* read_buffer,
+    grpc_closure* notify_on_receive_settings);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/context_list.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/context_list.h
new file mode 100644
index 0000000..5b9d2ab
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/context_list.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/buffer_list.h"
+
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+namespace grpc_core {
+/** A list of RPC Contexts */
+class ContextList {
+ public:
+  /* Creates a new element with \a context as the value and appends it to the
+   * list. */
+  static void Append(ContextList** head, grpc_chttp2_stream* s);
+
+  /* Executes a function \a fn with each context in the list and \a ts. It also
+   * frees up the entire list after this operation. It is intended as a callback
+   * and hence does not take a ref on \a error */
+  static void Execute(void* arg, grpc_core::Timestamps* ts, grpc_error* error);
+
+ private:
+  void* trace_context_ = nullptr;
+  ContextList* next_ = nullptr;
+  size_t byte_offset_ = 0;
+};
+
+void grpc_http2_set_write_timestamps_callback(void (*fn)(void*,
+                                                         grpc_core::Timestamps*,
+                                                         grpc_error* error));
+void grpc_http2_set_fn_get_copied_context(void* (*fn)(void*));
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/flow_control.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/flow_control.h
new file mode 100644
index 0000000..f083ab1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/flow_control.h	
@@ -0,0 +1,474 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FLOW_CONTROL_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FLOW_CONTROL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/transport/bdp_estimator.h"
+#include "src/core/lib/transport/pid_controller.h"
+
+struct grpc_chttp2_transport;
+struct grpc_chttp2_stream;
+
+extern grpc_core::TraceFlag grpc_flowctl_trace;
+
+namespace grpc {
+namespace testing {
+class TrickledCHTTP2;  // to make this a friend
+}  // namespace testing
+}  // namespace grpc
+
+namespace grpc_core {
+namespace chttp2 {
+
+static constexpr uint32_t kDefaultWindow = 65535;
+static constexpr int64_t kMaxWindow = static_cast<int64_t>((1u << 31) - 1);
+// TODO(ncteisen): Tune this
+static constexpr uint32_t kFrameSize = 1024 * 1024;
+
+class TransportFlowControl;
+class StreamFlowControl;
+
+// Encapsulates a collections of actions the transport needs to take with
+// regard to flow control. Each action comes with urgencies that tell the
+// transport how quickly the action must take place.
+class FlowControlAction {
+ public:
+  enum class Urgency : uint8_t {
+    // Nothing to be done.
+    NO_ACTION_NEEDED = 0,
+    // Initiate a write to update the initial window immediately.
+    UPDATE_IMMEDIATELY,
+    // Push the flow control update into a send buffer, to be sent
+    // out the next time a write is initiated.
+    QUEUE_UPDATE,
+  };
+
+  Urgency send_stream_update() const { return send_stream_update_; }
+  Urgency send_transport_update() const { return send_transport_update_; }
+  Urgency send_initial_window_update() const {
+    return send_initial_window_update_;
+  }
+  Urgency send_max_frame_size_update() const {
+    return send_max_frame_size_update_;
+  }
+  uint32_t initial_window_size() const { return initial_window_size_; }
+  uint32_t max_frame_size() const { return max_frame_size_; }
+
+  FlowControlAction& set_send_stream_update(Urgency u) {
+    send_stream_update_ = u;
+    return *this;
+  }
+  FlowControlAction& set_send_transport_update(Urgency u) {
+    send_transport_update_ = u;
+    return *this;
+  }
+  FlowControlAction& set_send_initial_window_update(Urgency u,
+                                                    uint32_t update) {
+    send_initial_window_update_ = u;
+    initial_window_size_ = update;
+    return *this;
+  }
+  FlowControlAction& set_send_max_frame_size_update(Urgency u,
+                                                    uint32_t update) {
+    send_max_frame_size_update_ = u;
+    max_frame_size_ = update;
+    return *this;
+  }
+
+  static const char* UrgencyString(Urgency u);
+  void Trace(grpc_chttp2_transport* t) const;
+
+ private:
+  Urgency send_stream_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_transport_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_initial_window_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_max_frame_size_update_ = Urgency::NO_ACTION_NEEDED;
+  uint32_t initial_window_size_ = 0;
+  uint32_t max_frame_size_ = 0;
+};
+
+class FlowControlTrace {
+ public:
+  FlowControlTrace(const char* reason, TransportFlowControl* tfc,
+                   StreamFlowControl* sfc) {
+    if (enabled_) Init(reason, tfc, sfc);
+  }
+
+  ~FlowControlTrace() {
+    if (enabled_) Finish();
+  }
+
+ private:
+  void Init(const char* reason, TransportFlowControl* tfc,
+            StreamFlowControl* sfc);
+  void Finish();
+
+  const bool enabled_ = GRPC_TRACE_FLAG_ENABLED(grpc_flowctl_trace);
+
+  TransportFlowControl* tfc_;
+  StreamFlowControl* sfc_;
+  const char* reason_;
+  int64_t remote_window_;
+  int64_t target_window_;
+  int64_t announced_window_;
+  int64_t remote_window_delta_;
+  int64_t local_window_delta_;
+  int64_t announced_window_delta_;
+};
+
+// Fat interface with all methods a flow control implementation needs to
+// support. gRPC C Core does not support pure virtual functions, so instead
+// we abort in any methods which require implementation in the base class.
+class TransportFlowControlBase {
+ public:
+  TransportFlowControlBase() {}
+  virtual ~TransportFlowControlBase() {}
+
+  // Is flow control enabled? This is needed in other codepaths like the checks
+  // in parsing and in writing.
+  virtual bool flow_control_enabled() const { abort(); }
+
+  // Called to check if the transport needs to send a WINDOW_UPDATE frame
+  virtual uint32_t MaybeSendUpdate(bool /* writing_anyway */) { abort(); }
+
+  // Using the protected members, returns and Action to be taken by the
+  // tranport.
+  virtual FlowControlAction MakeAction() { abort(); }
+
+  // Using the protected members, returns and Action to be taken by the
+  // tranport. Also checks for updates to our BDP estimate and acts
+  // accordingly.
+  virtual FlowControlAction PeriodicUpdate() { abort(); }
+
+  // Called to do bookkeeping when a stream owned by this transport sends
+  // data on the wire
+  virtual void StreamSentData(int64_t /* size */) { abort(); }
+
+  // Called to do bookkeeping when a stream owned by this transport receives
+  // data from the wire. Also does error checking for frame size.
+  virtual grpc_error* RecvData(int64_t /* incoming_frame_size */) { abort(); }
+
+  // Called to do bookkeeping when we receive a WINDOW_UPDATE frame.
+  virtual void RecvUpdate(uint32_t /* size */) { abort(); }
+
+  // Returns the BdpEstimator held by this object. Caller is responsible for
+  // checking for nullptr. TODO(ncteisen): consider fully encapsulating all
+  // bdp estimator actions inside TransportFlowControl
+  virtual BdpEstimator* bdp_estimator() { return nullptr; }
+
+  // Getters
+  int64_t remote_window() const { return remote_window_; }
+  virtual int64_t target_window() const { return target_initial_window_size_; }
+  int64_t announced_window() const { return announced_window_; }
+
+  // Used in certain benchmarks in which we don't want FlowControl to be a
+  // factor
+  virtual void TestOnlyForceHugeWindow() {}
+
+ protected:
+  friend class ::grpc::testing::TrickledCHTTP2;
+  int64_t remote_window_ = kDefaultWindow;
+  int64_t target_initial_window_size_ = kDefaultWindow;
+  int64_t announced_window_ = kDefaultWindow;
+};
+
+// Implementation of flow control that does NOTHING. Always returns maximum
+// values, never initiates writes, and assumes that the remote peer is doing
+// the same. To be used to narrow down on flow control as the cause of negative
+// performance.
+class TransportFlowControlDisabled final : public TransportFlowControlBase {
+ public:
+  // Maxes out all values
+  TransportFlowControlDisabled(grpc_chttp2_transport* t);
+
+  bool flow_control_enabled() const override { return false; }
+
+  // Never do anything.
+  uint32_t MaybeSendUpdate(bool /* writing_anyway */) override { return 0; }
+  FlowControlAction MakeAction() override { return FlowControlAction(); }
+  FlowControlAction PeriodicUpdate() override { return FlowControlAction(); }
+  void StreamSentData(int64_t /* size */) override {}
+  grpc_error* RecvData(int64_t /* incoming_frame_size */) override {
+    return GRPC_ERROR_NONE;
+  }
+  void RecvUpdate(uint32_t /* size */) override {}
+};
+
+// Implementation of flow control that abides to HTTP/2 spec and attempts
+// to be as performant as possible.
+class TransportFlowControl final : public TransportFlowControlBase {
+ public:
+  TransportFlowControl(const grpc_chttp2_transport* t, bool enable_bdp_probe);
+  ~TransportFlowControl() {}
+
+  bool flow_control_enabled() const override { return true; }
+
+  bool bdp_probe() const { return enable_bdp_probe_; }
+
+  // returns an announce if we should send a transport update to our peer,
+  // else returns zero; writing_anyway indicates if a write would happen
+  // regardless of the send - if it is false and this function returns non-zero,
+  // this announce will cause a write to occur
+  uint32_t MaybeSendUpdate(bool writing_anyway) override;
+
+  // Reads the flow control data and returns and actionable struct that will
+  // tell chttp2 exactly what it needs to do
+  FlowControlAction MakeAction() override {
+    return UpdateAction(FlowControlAction());
+  }
+
+  // Call periodically (at a low-ish rate, 100ms - 10s makes sense)
+  // to perform more complex flow control calculations and return an action
+  // to let chttp2 change its parameters
+  FlowControlAction PeriodicUpdate() override;
+
+  void StreamSentData(int64_t size) override { remote_window_ -= size; }
+
+  grpc_error* ValidateRecvData(int64_t incoming_frame_size);
+  void CommitRecvData(int64_t incoming_frame_size) {
+    announced_window_ -= incoming_frame_size;
+  }
+
+  grpc_error* RecvData(int64_t incoming_frame_size) override {
+    FlowControlTrace trace("  data recv", this, nullptr);
+    grpc_error* error = ValidateRecvData(incoming_frame_size);
+    if (error != GRPC_ERROR_NONE) return error;
+    CommitRecvData(incoming_frame_size);
+    return GRPC_ERROR_NONE;
+  }
+
+  // we have received a WINDOW_UPDATE frame for a transport
+  void RecvUpdate(uint32_t size) override {
+    FlowControlTrace trace("t updt recv", this, nullptr);
+    remote_window_ += size;
+  }
+
+  // See comment above announced_stream_total_over_incoming_window_ for the
+  // logic behind this decision.
+  int64_t target_window() const override {
+    return static_cast<uint32_t> GPR_MIN(
+        (int64_t)((1u << 31) - 1),
+        announced_stream_total_over_incoming_window_ +
+            target_initial_window_size_);
+  }
+
+  const grpc_chttp2_transport* transport() const { return t_; }
+
+  void PreUpdateAnnouncedWindowOverIncomingWindow(int64_t delta) {
+    if (delta > 0) {
+      announced_stream_total_over_incoming_window_ -= delta;
+    }
+  }
+
+  void PostUpdateAnnouncedWindowOverIncomingWindow(int64_t delta) {
+    if (delta > 0) {
+      announced_stream_total_over_incoming_window_ += delta;
+    }
+  }
+
+  BdpEstimator* bdp_estimator() override { return &bdp_estimator_; }
+
+  void TestOnlyForceHugeWindow() override {
+    announced_window_ = 1024 * 1024 * 1024;
+    remote_window_ = 1024 * 1024 * 1024;
+  }
+
+ private:
+  double TargetLogBdp();
+  double SmoothLogBdp(double value);
+  FlowControlAction::Urgency DeltaUrgency(int64_t value,
+                                          grpc_chttp2_setting_id setting_id);
+
+  FlowControlAction UpdateAction(FlowControlAction action) {
+    if (announced_window_ < target_window() / 2) {
+      action.set_send_transport_update(
+          FlowControlAction::Urgency::UPDATE_IMMEDIATELY);
+    }
+    return action;
+  }
+
+  const grpc_chttp2_transport* const t_;
+
+  /** calculating what we should give for local window:
+      we track the total amount of flow control over initial window size
+      across all streams: this is data that we want to receive right now (it
+      has an outstanding read)
+      and the total amount of flow control under initial window size across all
+      streams: this is data we've read early
+      we want to adjust incoming_window such that:
+      incoming_window = total_over - max(bdp - total_under, 0) */
+  int64_t announced_stream_total_over_incoming_window_ = 0;
+
+  /** should we probe bdp? */
+  const bool enable_bdp_probe_;
+
+  /* bdp estimation */
+  grpc_core::BdpEstimator bdp_estimator_;
+
+  /* pid controller */
+  grpc_core::PidController pid_controller_;
+  grpc_millis last_pid_update_ = 0;
+};
+
+// Fat interface with all methods a stream flow control implementation needs
+// to support. gRPC C Core does not support pure virtual functions, so instead
+// we abort in any methods which require implementation in the base class.
+class StreamFlowControlBase {
+ public:
+  StreamFlowControlBase() {}
+  virtual ~StreamFlowControlBase() {}
+
+  // Updates an action using the protected members.
+  virtual FlowControlAction UpdateAction(FlowControlAction /* action */) {
+    abort();
+  }
+
+  // Using the protected members, returns an Action for this stream to be
+  // taken by the tranport.
+  virtual FlowControlAction MakeAction() { abort(); }
+
+  // Bookkeeping for when data is sent on this stream.
+  virtual void SentData(int64_t /* outgoing_frame_size */) { abort(); }
+
+  // Bookkeeping and error checking for when data is received by this stream.
+  virtual grpc_error* RecvData(int64_t /* incoming_frame_size */) { abort(); }
+
+  // Called to check if this stream needs to send a WINDOW_UPDATE frame.
+  virtual uint32_t MaybeSendUpdate() { abort(); }
+
+  // Bookkeeping for receiving a WINDOW_UPDATE from for this stream.
+  virtual void RecvUpdate(uint32_t /* size */) { abort(); }
+
+  // Bookkeeping for when a call pulls bytes out of the transport. At this
+  // point we consider the data 'used' and can thus let out peer know we are
+  // ready for more data.
+  virtual void IncomingByteStreamUpdate(size_t /* max_size_hint */,
+                                        size_t /* have_already */) {
+    abort();
+  }
+
+  // Used in certain benchmarks in which we don't want FlowControl to be a
+  // factor
+  virtual void TestOnlyForceHugeWindow() {}
+
+  // Getters
+  int64_t remote_window_delta() { return remote_window_delta_; }
+  int64_t local_window_delta() { return local_window_delta_; }
+  int64_t announced_window_delta() { return announced_window_delta_; }
+
+ protected:
+  friend class ::grpc::testing::TrickledCHTTP2;
+  int64_t remote_window_delta_ = 0;
+  int64_t local_window_delta_ = 0;
+  int64_t announced_window_delta_ = 0;
+};
+
+// Implementation of flow control that does NOTHING. Always returns maximum
+// values, never initiates writes, and assumes that the remote peer is doing
+// the same. To be used to narrow down on flow control as the cause of negative
+// performance.
+class StreamFlowControlDisabled : public StreamFlowControlBase {
+ public:
+  FlowControlAction UpdateAction(FlowControlAction action) override {
+    return action;
+  }
+  FlowControlAction MakeAction() override { return FlowControlAction(); }
+  void SentData(int64_t /* outgoing_frame_size */) override {}
+  grpc_error* RecvData(int64_t /* incoming_frame_size */) override {
+    return GRPC_ERROR_NONE;
+  }
+  uint32_t MaybeSendUpdate() override { return 0; }
+  void RecvUpdate(uint32_t /* size */) override {}
+  void IncomingByteStreamUpdate(size_t /* max_size_hint */,
+                                size_t /* have_already */) override {}
+};
+
+// Implementation of flow control that abides to HTTP/2 spec and attempts
+// to be as performant as possible.
+class StreamFlowControl final : public StreamFlowControlBase {
+ public:
+  StreamFlowControl(TransportFlowControl* tfc, const grpc_chttp2_stream* s);
+  ~StreamFlowControl() {
+    tfc_->PreUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+  }
+
+  FlowControlAction UpdateAction(FlowControlAction action) override;
+  FlowControlAction MakeAction() override {
+    return UpdateAction(tfc_->MakeAction());
+  }
+
+  // we have sent data on the wire, we must track this in our bookkeeping for
+  // the remote peer's flow control.
+  void SentData(int64_t outgoing_frame_size) override {
+    FlowControlTrace tracer("  data sent", tfc_, this);
+    tfc_->StreamSentData(outgoing_frame_size);
+    remote_window_delta_ -= outgoing_frame_size;
+  }
+
+  // we have received data from the wire
+  grpc_error* RecvData(int64_t incoming_frame_size) override;
+
+  // returns an announce if we should send a stream update to our peer, else
+  // returns zero
+  uint32_t MaybeSendUpdate() override;
+
+  // we have received a WINDOW_UPDATE frame for a stream
+  void RecvUpdate(uint32_t size) override {
+    FlowControlTrace trace("s updt recv", tfc_, this);
+    remote_window_delta_ += size;
+  }
+
+  // the application is asking for a certain amount of bytes
+  void IncomingByteStreamUpdate(size_t max_size_hint,
+                                size_t have_already) override;
+
+  int64_t remote_window_delta() const { return remote_window_delta_; }
+  int64_t local_window_delta() const { return local_window_delta_; }
+  int64_t announced_window_delta() const { return announced_window_delta_; }
+
+  const grpc_chttp2_stream* stream() const { return s_; }
+
+  void TestOnlyForceHugeWindow() override {
+    announced_window_delta_ = 1024 * 1024 * 1024;
+    local_window_delta_ = 1024 * 1024 * 1024;
+    remote_window_delta_ = 1024 * 1024 * 1024;
+  }
+
+ private:
+  TransportFlowControl* const tfc_;
+  const grpc_chttp2_stream* const s_;
+
+  void UpdateAnnouncedWindowDelta(TransportFlowControl* tfc, int64_t change) {
+    tfc->PreUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+    announced_window_delta_ += change;
+    tfc->PostUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+  }
+};
+
+}  // namespace chttp2
+}  // namespace grpc_core
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame.h
new file mode 100644
index 0000000..083c007
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/* defined in internal.h */
+typedef struct grpc_chttp2_stream grpc_chttp2_stream;
+typedef struct grpc_chttp2_transport grpc_chttp2_transport;
+
+#define GRPC_CHTTP2_FRAME_DATA 0
+#define GRPC_CHTTP2_FRAME_HEADER 1
+#define GRPC_CHTTP2_FRAME_CONTINUATION 9
+#define GRPC_CHTTP2_FRAME_RST_STREAM 3
+#define GRPC_CHTTP2_FRAME_SETTINGS 4
+#define GRPC_CHTTP2_FRAME_PING 6
+#define GRPC_CHTTP2_FRAME_GOAWAY 7
+#define GRPC_CHTTP2_FRAME_WINDOW_UPDATE 8
+
+#define GRPC_CHTTP2_DATA_FLAG_END_STREAM 1
+#define GRPC_CHTTP2_FLAG_ACK 1
+#define GRPC_CHTTP2_DATA_FLAG_END_HEADERS 4
+#define GRPC_CHTTP2_DATA_FLAG_PADDED 8
+#define GRPC_CHTTP2_FLAG_HAS_PRIORITY 0x20
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_data.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_data.h
new file mode 100644
index 0000000..ec38900
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_data.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H
+
+/* Parser for GRPC streams embedded in DATA frames */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef enum {
+  GRPC_CHTTP2_DATA_FH_0,
+  GRPC_CHTTP2_DATA_FH_1,
+  GRPC_CHTTP2_DATA_FH_2,
+  GRPC_CHTTP2_DATA_FH_3,
+  GRPC_CHTTP2_DATA_FH_4,
+  GRPC_CHTTP2_DATA_FRAME,
+  GRPC_CHTTP2_DATA_ERROR
+} grpc_chttp2_stream_state;
+
+namespace grpc_core {
+class Chttp2IncomingByteStream;
+}  // namespace grpc_core
+
+struct grpc_chttp2_data_parser {
+  grpc_chttp2_data_parser() = default;
+  ~grpc_chttp2_data_parser();
+
+  grpc_chttp2_stream_state state = GRPC_CHTTP2_DATA_FH_0;
+  uint8_t frame_type = 0;
+  uint32_t frame_size = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  bool is_frame_compressed = false;
+  grpc_core::Chttp2IncomingByteStream* parsing_frame = nullptr;
+};
+
+/* start processing a new data frame */
+grpc_error* grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser* parser,
+                                                uint8_t flags,
+                                                uint32_t stream_id,
+                                                grpc_chttp2_stream* s);
+
+/* handle a slice of a data frame - is_last indicates the last slice of a
+   frame */
+grpc_error* grpc_chttp2_data_parser_parse(void* parser,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s,
+                                          const grpc_slice& slice, int is_last);
+
+void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer* inbuf,
+                             uint32_t write_bytes, int is_eof,
+                             grpc_transport_one_way_stats* stats,
+                             grpc_slice_buffer* outbuf);
+
+grpc_error* grpc_deframe_unprocessed_incoming_frames(
+    grpc_chttp2_data_parser* p, grpc_chttp2_stream* s,
+    grpc_slice_buffer* slices, grpc_slice* slice_out,
+    grpc_core::OrphanablePtr<grpc_core::ByteStream>* stream_out);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_goaway.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_goaway.h
new file mode 100644
index 0000000..6f65bb2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_goaway.h	
@@ -0,0 +1,63 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+
+typedef enum {
+  GRPC_CHTTP2_GOAWAY_LSI0,
+  GRPC_CHTTP2_GOAWAY_LSI1,
+  GRPC_CHTTP2_GOAWAY_LSI2,
+  GRPC_CHTTP2_GOAWAY_LSI3,
+  GRPC_CHTTP2_GOAWAY_ERR0,
+  GRPC_CHTTP2_GOAWAY_ERR1,
+  GRPC_CHTTP2_GOAWAY_ERR2,
+  GRPC_CHTTP2_GOAWAY_ERR3,
+  GRPC_CHTTP2_GOAWAY_DEBUG
+} grpc_chttp2_goaway_parse_state;
+
+typedef struct {
+  grpc_chttp2_goaway_parse_state state;
+  uint32_t last_stream_id;
+  uint32_t error_code;
+  char* debug_data;
+  uint32_t debug_length;
+  uint32_t debug_pos;
+} grpc_chttp2_goaway_parser;
+
+void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser* p);
+void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser* p);
+grpc_error* grpc_chttp2_goaway_parser_begin_frame(
+    grpc_chttp2_goaway_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_goaway_parser_parse(void* parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s,
+                                            const grpc_slice& slice,
+                                            int is_last);
+
+void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
+                               const grpc_slice& debug_data,
+                               grpc_slice_buffer* slice_buffer);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_ping.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_ping.h
new file mode 100644
index 0000000..915d023
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_ping.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t is_ack;
+  uint64_t opaque_8bytes;
+} grpc_chttp2_ping_parser;
+
+grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint64_t opaque_8bytes);
+
+grpc_error* grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser* parser,
+                                                uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_ping_parser_parse(void* parser,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s,
+                                          const grpc_slice& slice, int is_last);
+
+/* Test-only function for disabling ping ack */
+void grpc_set_disable_ping_ack(bool disable_ping_ack);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_rst_stream.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_rst_stream.h
new file mode 100644
index 0000000..d61e623
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_rst_stream.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t reason_bytes[4];
+} grpc_chttp2_rst_stream_parser;
+
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code,
+                                         grpc_transport_one_way_stats* stats);
+
+// Adds RST_STREAM frame to t->qbuf (buffer for the next write). Should be
+// called when we want to add RST_STREAM and we are not in
+// write_action_begin_locked.
+void grpc_chttp2_add_rst_stream_to_next_write(
+    grpc_chttp2_transport* t, uint32_t id, uint32_t code,
+    grpc_transport_one_way_stats* stats);
+
+grpc_error* grpc_chttp2_rst_stream_parser_begin_frame(
+    grpc_chttp2_rst_stream_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_rst_stream_parser_parse(void* parser,
+                                                grpc_chttp2_transport* t,
+                                                grpc_chttp2_stream* s,
+                                                const grpc_slice& slice,
+                                                int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_settings.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_settings.h
new file mode 100644
index 0000000..8a3ff04
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_settings.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
+
+typedef enum {
+  GRPC_CHTTP2_SPS_ID0,
+  GRPC_CHTTP2_SPS_ID1,
+  GRPC_CHTTP2_SPS_VAL0,
+  GRPC_CHTTP2_SPS_VAL1,
+  GRPC_CHTTP2_SPS_VAL2,
+  GRPC_CHTTP2_SPS_VAL3
+} grpc_chttp2_settings_parse_state;
+
+typedef struct {
+  grpc_chttp2_settings_parse_state state;
+  uint32_t* target_settings;
+  uint8_t is_ack;
+  uint16_t id;
+  uint32_t value;
+  uint32_t incoming_settings[GRPC_CHTTP2_NUM_SETTINGS];
+} grpc_chttp2_settings_parser;
+
+/* Create a settings frame by diffing old & new, and updating old to be new */
+grpc_slice grpc_chttp2_settings_create(uint32_t* old, const uint32_t* newval,
+                                       uint32_t force_mask, size_t count);
+/* Create an ack settings frame */
+grpc_slice grpc_chttp2_settings_ack_create(void);
+
+grpc_error* grpc_chttp2_settings_parser_begin_frame(
+    grpc_chttp2_settings_parser* parser, uint32_t length, uint8_t flags,
+    uint32_t* settings);
+grpc_error* grpc_chttp2_settings_parser_parse(void* parser,
+                                              grpc_chttp2_transport* t,
+                                              grpc_chttp2_stream* s,
+                                              const grpc_slice& slice,
+                                              int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_window_update.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_window_update.h
new file mode 100644
index 0000000..f6721a5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/frame_window_update.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t is_connection_update;
+  uint32_t amount;
+} grpc_chttp2_window_update_parser;
+
+grpc_slice grpc_chttp2_window_update_create(
+    uint32_t id, uint32_t window_delta, grpc_transport_one_way_stats* stats);
+
+grpc_error* grpc_chttp2_window_update_parser_begin_frame(
+    grpc_chttp2_window_update_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_window_update_parser_parse(void* parser,
+                                                   grpc_chttp2_transport* t,
+                                                   grpc_chttp2_stream* s,
+                                                   const grpc_slice& slice,
+                                                   int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_encoder.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_encoder.h
new file mode 100644
index 0000000..dc371fa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_encoder.h	
@@ -0,0 +1,108 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/transport.h"
+
+// This should be <= 8. We use 6 to save space.
+#define GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS 6
+#define GRPC_CHTTP2_HPACKC_NUM_VALUES (1 << GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS)
+/* initial table size, per spec */
+#define GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE 4096
+/* maximum table size we'll actually use */
+#define GRPC_CHTTP2_HPACKC_MAX_TABLE_SIZE (1024 * 1024)
+
+extern grpc_core::TraceFlag grpc_http_trace;
+
+struct grpc_chttp2_hpack_compressor {
+  uint32_t max_table_size;
+  uint32_t max_table_elems;
+  uint32_t cap_table_elems;
+  /** maximum number of bytes we'll use for the decode table (to guard against
+      peers ooming us by setting decode table size high) */
+  uint32_t max_usable_size;
+  /* one before the lowest usable table index */
+  uint32_t tail_remote_index;
+  uint32_t table_size;
+  uint32_t table_elems;
+  uint16_t* table_elem_size;
+  /** if non-zero, advertise to the decoder that we'll start using a table
+      of this size */
+  uint8_t advertise_table_size_change;
+
+  /* filter tables for elems: this tables provides an approximate
+     popularity count for particular hashes, and are used to determine whether
+     a new literal should be added to the compression table or not.
+     They track a single integer that counts how often a particular value has
+     been seen. When that count reaches max (255), all values are halved. */
+  uint32_t filter_elems_sum;
+  uint8_t filter_elems[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+
+  /* entry tables for keys & elems: these tables track values that have been
+     seen and *may* be in the decompressor table */
+  struct {
+    struct {
+      grpc_mdelem value;
+      uint32_t index;
+    } entries[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+  } elem_table; /* Metadata table management */
+  struct {
+    struct {
+      /* Only store the slice refcount - we do not need the byte buffer or
+         length of the slice since we only need to store a mapping between the
+         identity of the slice and the corresponding HPACK index. Since the
+         slice *must* be static or interned, the refcount is sufficient to
+         establish identity. */
+      grpc_slice_refcount* value;
+      uint32_t index;
+    } entries[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+  } key_table; /* Key table management */
+};
+
+void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor* c);
+void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor* c);
+void grpc_chttp2_hpack_compressor_set_max_table_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size);
+void grpc_chttp2_hpack_compressor_set_max_usable_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size);
+
+typedef struct {
+  uint32_t stream_id;
+  bool is_eof;
+  bool use_true_binary_metadata;
+  size_t max_frame_size;
+  grpc_transport_one_way_stats* stats;
+} grpc_encode_header_options;
+
+void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
+                               grpc_mdelem** extra_headers,
+                               size_t extra_headers_size,
+                               grpc_metadata_batch* metadata,
+                               const grpc_encode_header_options* options,
+                               grpc_slice_buffer* outbuf);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_parser.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_parser.h
new file mode 100644
index 0000000..eb90568
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_parser.h	
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_table.h"
+#include "src/core/lib/transport/metadata.h"
+
+typedef struct grpc_chttp2_hpack_parser grpc_chttp2_hpack_parser;
+
+typedef grpc_error* (*grpc_chttp2_hpack_parser_state)(
+    grpc_chttp2_hpack_parser* p, const uint8_t* beg, const uint8_t* end);
+
+typedef struct {
+  bool copied;
+  struct {
+    grpc_slice referenced;
+    struct {
+      char* str;
+      uint32_t length;
+      uint32_t capacity;
+    } copied;
+  } data;
+} grpc_chttp2_hpack_parser_string;
+
+struct grpc_chttp2_hpack_parser {
+  /* user specified callback for each header output */
+  grpc_error* (*on_header)(void* user_data, grpc_mdelem md);
+  void* on_header_user_data;
+
+  grpc_error* last_error;
+
+  /* current parse state - or a function that implements it */
+  grpc_chttp2_hpack_parser_state state;
+  /* future states dependent on the opening op code */
+  const grpc_chttp2_hpack_parser_state* next_state;
+  /* what to do after skipping prioritization data */
+  grpc_chttp2_hpack_parser_state after_prioritization;
+  /* the refcount of the slice that we're currently parsing */
+  grpc_slice_refcount* current_slice_refcount;
+  /* the value we're currently parsing */
+  union {
+    uint32_t* value;
+    grpc_chttp2_hpack_parser_string* str;
+  } parsing;
+  /* string parameters for each chunk */
+  grpc_chttp2_hpack_parser_string key;
+  grpc_chttp2_hpack_parser_string value;
+  /* parsed index */
+  uint32_t index;
+  /* When we parse a value string, we determine the metadata element for a
+     specific index, which we need again when we're finishing up with that
+     header. To avoid calculating the metadata element for that index a second
+     time at that stage, we cache (and invalidate) the element here. */
+  grpc_mdelem md_for_index;
+#ifndef NDEBUG
+  int64_t precomputed_md_index;
+#endif
+  /* length of source bytes for the currently parsing string */
+  uint32_t strlen;
+  /* number of source bytes read for the currently parsing string */
+  uint32_t strgot;
+  /* huffman decoding state */
+  int16_t huff_state;
+  /* is the string being decoded binary? */
+  uint8_t binary;
+  /* is the current string huffman encoded? */
+  uint8_t huff;
+  /* is a dynamic table update allowed? */
+  uint8_t dynamic_table_update_allowed;
+  /* set by higher layers, used by grpc_chttp2_header_parser_parse to signal
+     it should append a metadata boundary at the end of frame */
+  uint8_t is_boundary;
+  uint8_t is_eof;
+  uint32_t base64_buffer;
+
+  /* hpack table */
+  grpc_chttp2_hptbl table;
+};
+
+void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser* p);
+void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser* p);
+
+void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser* p);
+
+grpc_error* grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser* p,
+                                           const grpc_slice& slice);
+
+/* wraps grpc_chttp2_hpack_parser_parse to provide a frame level parser for
+   the transport */
+grpc_error* grpc_chttp2_header_parser_parse(void* hpack_parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s,
+                                            const grpc_slice& slice,
+                                            int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_table.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_table.h
new file mode 100644
index 0000000..5a6c739
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/hpack_table.h	
@@ -0,0 +1,148 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+/* HPACK header table */
+
+/* last index in the static table */
+#define GRPC_CHTTP2_LAST_STATIC_ENTRY 61
+
+/* Initial table size as per the spec */
+#define GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE 4096
+/* Maximum table size that we'll use */
+#define GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE
+/* Per entry overhead bytes as per the spec */
+#define GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD 32
+#if 0
+/* Maximum number of entries we could possibly fit in the table, given defined
+   overheads */
+#define GRPC_CHTTP2_MAX_TABLE_COUNT                                            \
+  ((GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) / \
+   GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD)
+#endif
+
+/* hpack decoder table */
+struct grpc_chttp2_hptbl {
+  static uint32_t entries_for_bytes(uint32_t bytes) {
+    return (bytes + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) /
+           GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+  }
+  static constexpr uint32_t kInitialCapacity =
+      (GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD -
+       1) /
+      GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+
+  grpc_chttp2_hptbl() {
+    GPR_DEBUG_ASSERT(!ents);
+    constexpr uint32_t AllocSize = sizeof(*ents) * kInitialCapacity;
+    ents = static_cast<grpc_mdelem*>(gpr_malloc(AllocSize));
+    memset(ents, 0, AllocSize);
+  }
+
+  /* the first used entry in ents */
+  uint32_t first_ent = 0;
+  /* how many entries are in the table */
+  uint32_t num_ents = 0;
+  /* the amount of memory used by the table, according to the hpack algorithm */
+  uint32_t mem_used = 0;
+  /* the max memory allowed to be used by the table, according to the hpack
+     algorithm */
+  uint32_t max_bytes = GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE;
+  /* the currently agreed size of the table, according to the hpack algorithm */
+  uint32_t current_table_bytes = GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE;
+  /* Maximum number of entries we could possibly fit in the table, given defined
+     overheads */
+  uint32_t max_entries = kInitialCapacity;
+  /* Number of entries allocated in ents */
+  uint32_t cap_entries = kInitialCapacity;
+  /* a circular buffer of headers - this is stored in the opposite order to
+     what hpack specifies, in order to simplify table management a little...
+     meaning lookups need to SUBTRACT from the end position */
+  grpc_mdelem* ents = nullptr;
+};
+
+void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl* tbl);
+void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl* tbl,
+                                     uint32_t max_bytes);
+grpc_error* grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl* tbl,
+                                                     uint32_t bytes);
+
+/* lookup a table entry based on its hpack index */
+grpc_mdelem grpc_chttp2_hptbl_lookup_dynamic_index(const grpc_chttp2_hptbl* tbl,
+                                                   uint32_t tbl_index);
+grpc_mdelem grpc_chttp2_hptbl_lookup_ref_dynamic_index(
+    const grpc_chttp2_hptbl* tbl, uint32_t tbl_index);
+template <bool take_ref = false>
+inline grpc_mdelem grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl* tbl,
+                                            uint32_t index) {
+  /* Static table comes first, just return an entry from it.
+     NB: This imposes the constraint that the first
+     GRPC_CHTTP2_LAST_STATIC_ENTRY entries in the core static metadata table
+     must follow the hpack standard. If that changes, we *must* not rely on
+     reading the core static metadata table here; at that point we'd need our
+     own singleton static metadata in the correct order. */
+  if (index <= GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+    return grpc_static_mdelem_manifested()[index - 1];
+  } else {
+    if (take_ref) {
+      return grpc_chttp2_hptbl_lookup_ref_dynamic_index(tbl, index);
+    } else {
+      return grpc_chttp2_hptbl_lookup_dynamic_index(tbl, index);
+    }
+  }
+}
+/* add a table entry to the index */
+grpc_error* grpc_chttp2_hptbl_add(grpc_chttp2_hptbl* tbl,
+                                  grpc_mdelem md) GRPC_MUST_USE_RESULT;
+
+size_t grpc_chttp2_get_size_in_hpack_table(grpc_mdelem elem,
+                                           bool use_true_binary_metadata);
+
+/* Returns the static hpack table index that corresponds to /a elem. Returns 0
+  if /a elem is not statically stored or if it is not in the static hpack
+  table */
+inline uintptr_t grpc_chttp2_get_static_hpack_table_index(grpc_mdelem md) {
+  uintptr_t index =
+      reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(md)) -
+      grpc_static_mdelem_table();
+  if (index < GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+    return index + 1;  // Hpack static metadata element indices start at 1
+  }
+  return 0;
+}
+
+/* Find a key/value pair in the table... returns the index in the table of the
+   most similar entry, or 0 if the value was not found */
+typedef struct {
+  uint32_t index;
+  int has_value;
+} grpc_chttp2_hptbl_find_result;
+grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find(
+    const grpc_chttp2_hptbl* tbl, grpc_mdelem md);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/http2_settings.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/http2_settings.h
new file mode 100644
index 0000000..07ce062
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/http2_settings.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_settings_ids.py
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef enum {
+  GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE = 0,               /* wire id 1 */
+  GRPC_CHTTP2_SETTINGS_ENABLE_PUSH = 1,                     /* wire id 2 */
+  GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 2,          /* wire id 3 */
+  GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE = 3,             /* wire id 4 */
+  GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE = 4,                  /* wire id 5 */
+  GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 5,            /* wire id 6 */
+  GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA = 6, /* wire id 65027 */
+} grpc_chttp2_setting_id;
+
+#define GRPC_CHTTP2_NUM_SETTINGS 7
+
+extern const uint16_t grpc_setting_id_to_wire_id[];
+
+bool grpc_wire_id_to_setting_id(uint32_t wire_id, grpc_chttp2_setting_id* out);
+
+typedef enum {
+  GRPC_CHTTP2_CLAMP_INVALID_VALUE,
+  GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE
+} grpc_chttp2_invalid_value_behavior;
+
+typedef struct {
+  const char* name;
+  uint32_t default_value;
+  uint32_t min_value;
+  uint32_t max_value;
+  grpc_chttp2_invalid_value_behavior invalid_value_behavior;
+  uint32_t error_value;
+} grpc_chttp2_setting_parameters;
+
+extern const grpc_chttp2_setting_parameters
+    grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS];
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/huffsyms.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/huffsyms.h
new file mode 100644
index 0000000..2e2a5da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/huffsyms.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H
+
+/* HPACK static huffman table */
+
+#define GRPC_CHTTP2_NUM_HUFFSYMS 257
+
+typedef struct {
+  unsigned bits;
+  unsigned length;
+} grpc_chttp2_huffsym;
+
+extern const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS];
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/incoming_metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/incoming_metadata.h
new file mode 100644
index 0000000..b63caa1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/incoming_metadata.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport.h"
+
+struct grpc_chttp2_incoming_metadata_buffer {
+  explicit grpc_chttp2_incoming_metadata_buffer(grpc_core::Arena* arena)
+      : arena(arena) {
+    grpc_metadata_batch_init(&batch);
+    batch.deadline = GRPC_MILLIS_INF_FUTURE;
+  }
+  ~grpc_chttp2_incoming_metadata_buffer() {
+    grpc_metadata_batch_destroy(&batch);
+  }
+
+  static constexpr size_t kPreallocatedMDElem = 10;
+
+  grpc_core::Arena* arena;
+  size_t size = 0;   // total size of metadata.
+  size_t count = 0;  // minimum of count of metadata and kPreallocatedMDElem.
+  // These preallocated mdelems are used while count < kPreallocatedMDElem.
+  grpc_linked_mdelem preallocated_mdelems[kPreallocatedMDElem];
+  grpc_metadata_batch batch;
+};
+
+void grpc_chttp2_incoming_metadata_buffer_publish(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_metadata_batch* batch);
+
+grpc_error* grpc_chttp2_incoming_metadata_buffer_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer,
+    grpc_mdelem elem) GRPC_MUST_USE_RESULT;
+grpc_error* grpc_chttp2_incoming_metadata_buffer_replace_or_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer,
+    grpc_mdelem elem) GRPC_MUST_USE_RESULT;
+void grpc_chttp2_incoming_metadata_buffer_set_deadline(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_millis deadline);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/internal.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/internal.h
new file mode 100644
index 0000000..fa3d882
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/internal.h	
@@ -0,0 +1,871 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include "src/core/ext/transport/chttp2/transport/flow_control.h"
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/frame_data.h"
+#include "src/core/ext/transport/chttp2/transport/frame_goaway.h"
+#include "src/core/ext/transport/chttp2/transport/frame_ping.h"
+#include "src/core/ext/transport/chttp2/transport/frame_rst_stream.h"
+#include "src/core/ext/transport/chttp2/transport/frame_settings.h"
+#include "src/core/ext/transport/chttp2/transport/frame_window_update.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_encoder.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
+#include "src/core/ext/transport/chttp2/transport/stream_map.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+namespace grpc_core {
+class ContextList;
+}
+
+/* streams are kept in various linked lists depending on what things need to
+   happen to them... this enum labels each list */
+typedef enum {
+  GRPC_CHTTP2_LIST_WRITABLE,
+  GRPC_CHTTP2_LIST_WRITING,
+  GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT,
+  GRPC_CHTTP2_LIST_STALLED_BY_STREAM,
+  /** streams that are waiting to start because there are too many concurrent
+      streams on the connection */
+  GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY,
+  STREAM_LIST_COUNT /* must be last */
+} grpc_chttp2_stream_list_id;
+
+typedef enum {
+  GRPC_CHTTP2_WRITE_STATE_IDLE,
+  GRPC_CHTTP2_WRITE_STATE_WRITING,
+  GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE,
+} grpc_chttp2_write_state;
+
+typedef enum {
+  GRPC_CHTTP2_OPTIMIZE_FOR_LATENCY,
+  GRPC_CHTTP2_OPTIMIZE_FOR_THROUGHPUT,
+} grpc_chttp2_optimization_target;
+
+typedef enum {
+  GRPC_CHTTP2_PCL_INITIATE = 0,
+  GRPC_CHTTP2_PCL_NEXT,
+  GRPC_CHTTP2_PCL_INFLIGHT,
+  GRPC_CHTTP2_PCL_COUNT /* must be last */
+} grpc_chttp2_ping_closure_list;
+
+typedef enum {
+  GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE,
+  GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT,
+  GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API,
+  GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE,
+  GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM,
+} grpc_chttp2_initiate_write_reason;
+
+const char* grpc_chttp2_initiate_write_reason_string(
+    grpc_chttp2_initiate_write_reason reason);
+
+typedef struct {
+  grpc_closure_list lists[GRPC_CHTTP2_PCL_COUNT] = {};
+  uint64_t inflight_id = 0;
+} grpc_chttp2_ping_queue;
+
+typedef struct {
+  int max_pings_without_data;
+  int max_ping_strikes;
+  grpc_millis min_sent_ping_interval_without_data;
+  grpc_millis min_recv_ping_interval_without_data;
+} grpc_chttp2_repeated_ping_policy;
+
+typedef struct {
+  grpc_millis last_ping_sent_time;
+  int pings_before_data_required;
+  grpc_timer delayed_ping_timer;
+  bool is_delayed_ping_timer_set;
+} grpc_chttp2_repeated_ping_state;
+
+typedef struct {
+  grpc_millis last_ping_recv_time;
+  int ping_strikes;
+} grpc_chttp2_server_ping_recv_state;
+
+/* deframer state for the overall http2 stream of bytes */
+typedef enum {
+  /* prefix: one entry per http2 connection prefix byte */
+  GRPC_DTS_CLIENT_PREFIX_0 = 0,
+  GRPC_DTS_CLIENT_PREFIX_1,
+  GRPC_DTS_CLIENT_PREFIX_2,
+  GRPC_DTS_CLIENT_PREFIX_3,
+  GRPC_DTS_CLIENT_PREFIX_4,
+  GRPC_DTS_CLIENT_PREFIX_5,
+  GRPC_DTS_CLIENT_PREFIX_6,
+  GRPC_DTS_CLIENT_PREFIX_7,
+  GRPC_DTS_CLIENT_PREFIX_8,
+  GRPC_DTS_CLIENT_PREFIX_9,
+  GRPC_DTS_CLIENT_PREFIX_10,
+  GRPC_DTS_CLIENT_PREFIX_11,
+  GRPC_DTS_CLIENT_PREFIX_12,
+  GRPC_DTS_CLIENT_PREFIX_13,
+  GRPC_DTS_CLIENT_PREFIX_14,
+  GRPC_DTS_CLIENT_PREFIX_15,
+  GRPC_DTS_CLIENT_PREFIX_16,
+  GRPC_DTS_CLIENT_PREFIX_17,
+  GRPC_DTS_CLIENT_PREFIX_18,
+  GRPC_DTS_CLIENT_PREFIX_19,
+  GRPC_DTS_CLIENT_PREFIX_20,
+  GRPC_DTS_CLIENT_PREFIX_21,
+  GRPC_DTS_CLIENT_PREFIX_22,
+  GRPC_DTS_CLIENT_PREFIX_23,
+  /* frame header byte 0... */
+  /* must follow from the prefix states */
+  GRPC_DTS_FH_0,
+  GRPC_DTS_FH_1,
+  GRPC_DTS_FH_2,
+  GRPC_DTS_FH_3,
+  GRPC_DTS_FH_4,
+  GRPC_DTS_FH_5,
+  GRPC_DTS_FH_6,
+  GRPC_DTS_FH_7,
+  /* ... frame header byte 8 */
+  GRPC_DTS_FH_8,
+  /* inside a http2 frame */
+  GRPC_DTS_FRAME
+} grpc_chttp2_deframe_transport_state;
+
+typedef struct {
+  grpc_chttp2_stream* head;
+  grpc_chttp2_stream* tail;
+} grpc_chttp2_stream_list;
+
+typedef struct {
+  grpc_chttp2_stream* next;
+  grpc_chttp2_stream* prev;
+} grpc_chttp2_stream_link;
+
+/* We keep several sets of connection wide parameters */
+typedef enum {
+  /* The settings our peer has asked for (and we have acked) */
+  GRPC_PEER_SETTINGS = 0,
+  /* The settings we'd like to have */
+  GRPC_LOCAL_SETTINGS,
+  /* The settings we've published to our peer */
+  GRPC_SENT_SETTINGS,
+  /* The settings the peer has acked */
+  GRPC_ACKED_SETTINGS,
+  GRPC_NUM_SETTING_SETS
+} grpc_chttp2_setting_set;
+
+typedef enum {
+  GRPC_CHTTP2_NO_GOAWAY_SEND,
+  GRPC_CHTTP2_GOAWAY_SEND_SCHEDULED,
+  GRPC_CHTTP2_GOAWAY_SENT,
+} grpc_chttp2_sent_goaway_state;
+
+typedef struct grpc_chttp2_write_cb {
+  int64_t call_at_byte;
+  grpc_closure* closure;
+  struct grpc_chttp2_write_cb* next;
+} grpc_chttp2_write_cb;
+
+namespace grpc_core {
+
+class Chttp2IncomingByteStream : public ByteStream {
+ public:
+  Chttp2IncomingByteStream(grpc_chttp2_transport* transport,
+                           grpc_chttp2_stream* stream, uint32_t frame_size,
+                           uint32_t flags);
+
+  void Orphan() override;
+
+  bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+  grpc_error* Pull(grpc_slice* slice) override;
+  void Shutdown(grpc_error* error) override;
+
+  // TODO(roth): When I converted this class to C++, I wanted to make it
+  // inherit from RefCounted or InternallyRefCounted instead of continuing
+  // to use its own custom ref-counting code.  However, that would require
+  // using multiple inheritance, which sucks in general.  And to make matters
+  // worse, it causes problems with our New<> and Delete<> wrappers.
+  // Specifically, unless RefCounted is first in the list of parent classes,
+  // it will see a different value of the address of the object than the one
+  // we actually allocated, in which case gpr_free() will be called on a
+  // different address than the one we got from gpr_malloc(), thus causing a
+  // crash.  Given the fragility of depending on that, as well as a desire to
+  // avoid multiple inheritance in general, I've decided to leave this
+  // alone for now.  We can revisit this once we're able to link against
+  // libc++, at which point we can eliminate New<> and Delete<> and
+  // switch to std::shared_ptr<>.
+  void Ref() { refs_.Ref(); }
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete this;
+    }
+  }
+
+  void PublishError(grpc_error* error);
+
+  grpc_error* Push(const grpc_slice& slice, grpc_slice* slice_out);
+
+  grpc_error* Finished(grpc_error* error, bool reset_on_error);
+
+  uint32_t remaining_bytes() const { return remaining_bytes_; }
+
+ private:
+  static void NextLocked(void* arg, grpc_error* error_ignored);
+  static void OrphanLocked(void* arg, grpc_error* error_ignored);
+
+  void MaybeCreateStreamDecompressionCtx();
+
+  grpc_chttp2_transport* transport_;  // Immutable.
+  grpc_chttp2_stream* stream_;        // Immutable.
+
+  grpc_core::RefCount refs_;
+
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  uint32_t remaining_bytes_;
+
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  struct {
+    grpc_closure closure;
+    size_t max_size_hint;
+    grpc_closure* on_complete;
+  } next_action_;
+  grpc_closure destroy_action_;
+};
+
+}  // namespace grpc_core
+
+typedef enum {
+  GRPC_CHTTP2_KEEPALIVE_STATE_WAITING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_PINGING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_DYING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED,
+} grpc_chttp2_keepalive_state;
+
+struct grpc_chttp2_transport {
+  grpc_chttp2_transport(const grpc_channel_args* channel_args,
+                        grpc_endpoint* ep, bool is_client,
+                        grpc_resource_user* resource_user);
+  ~grpc_chttp2_transport();
+
+  grpc_transport base; /* must be first */
+  grpc_core::RefCount refs;
+  grpc_endpoint* ep;
+  char* peer_string;
+
+  grpc_resource_user* resource_user;
+
+  grpc_core::Combiner* combiner;
+
+  grpc_closure* notify_on_receive_settings = nullptr;
+
+  /** write execution state of the transport */
+  grpc_chttp2_write_state write_state = GRPC_CHTTP2_WRITE_STATE_IDLE;
+
+  /** is the transport destroying itself? */
+  uint8_t destroying = false;
+  /** has the upper layer closed the transport? */
+  grpc_error* closed_with_error = GRPC_ERROR_NONE;
+
+  /** is there a read request to the endpoint outstanding? */
+  uint8_t endpoint_reading = 1;
+
+  /** various lists of streams */
+  grpc_chttp2_stream_list lists[STREAM_LIST_COUNT] = {};
+
+  /** maps stream id to grpc_chttp2_stream objects */
+  grpc_chttp2_stream_map stream_map;
+
+  grpc_closure write_action_begin_locked;
+  grpc_closure write_action;
+  grpc_closure write_action_end_locked;
+
+  grpc_closure read_action_locked;
+
+  /** incoming read bytes */
+  grpc_slice_buffer read_buffer;
+
+  /** address to place a newly accepted stream - set and unset by
+      grpc_chttp2_parsing_accept_stream; used by init_stream to
+      publish the accepted server stream */
+  grpc_chttp2_stream** accepting_stream = nullptr;
+
+  /* accept stream callback */
+  void (*accept_stream_cb)(void* user_data, grpc_transport* transport,
+                           const void* server_data);
+  void* accept_stream_cb_user_data;
+
+  /** connectivity tracking */
+  grpc_core::ConnectivityStateTracker state_tracker;
+
+  /** data to write now */
+  grpc_slice_buffer outbuf;
+  /** hpack encoding */
+  grpc_chttp2_hpack_compressor hpack_compressor;
+  /** is this a client? */
+  bool is_client;
+
+  /** data to write next write */
+  grpc_slice_buffer qbuf;
+
+  /** how much data are we willing to buffer when the WRITE_BUFFER_HINT is set?
+   */
+  uint32_t write_buffer_size = grpc_core::chttp2::kDefaultWindow;
+
+  /** Set to a grpc_error object if a goaway frame is received. By default, set
+   * to GRPC_ERROR_NONE */
+  grpc_error* goaway_error = GRPC_ERROR_NONE;
+
+  grpc_chttp2_sent_goaway_state sent_goaway_state = GRPC_CHTTP2_NO_GOAWAY_SEND;
+
+  /** are the local settings dirty and need to be sent? */
+  bool dirtied_local_settings = true;
+  /** have local settings been sent? */
+  bool sent_local_settings = false;
+  /** bitmask of setting indexes to send out
+      Hack: it's common for implementations to assume 65536 bytes initial send
+      window -- this should by rights be 0 */
+  uint32_t force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
+  /** settings values */
+  uint32_t settings[GRPC_NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS];
+
+  /** what is the next stream id to be allocated by this peer?
+      copied to next_stream_id in parsing when parsing commences */
+  uint32_t next_stream_id = 0;
+
+  /** last new stream id */
+  uint32_t last_new_stream_id = 0;
+
+  /** ping queues for various ping insertion points */
+  grpc_chttp2_ping_queue ping_queue = grpc_chttp2_ping_queue();
+  grpc_chttp2_repeated_ping_policy ping_policy;
+  grpc_chttp2_repeated_ping_state ping_state;
+  uint64_t ping_ctr = 0; /* unique id for pings */
+  grpc_closure retry_initiate_ping_locked;
+
+  /** ping acks */
+  size_t ping_ack_count = 0;
+  size_t ping_ack_capacity = 0;
+  uint64_t* ping_acks = nullptr;
+  grpc_chttp2_server_ping_recv_state ping_recv_state;
+
+  /** parser for headers */
+  grpc_chttp2_hpack_parser hpack_parser;
+  /** simple one shot parsers */
+  union {
+    grpc_chttp2_window_update_parser window_update;
+    grpc_chttp2_settings_parser settings;
+    grpc_chttp2_ping_parser ping;
+    grpc_chttp2_rst_stream_parser rst_stream;
+  } simple;
+  /** parser for goaway frames */
+  grpc_chttp2_goaway_parser goaway_parser;
+
+  grpc_core::PolymorphicManualConstructor<
+      grpc_core::chttp2::TransportFlowControlBase,
+      grpc_core::chttp2::TransportFlowControl,
+      grpc_core::chttp2::TransportFlowControlDisabled>
+      flow_control;
+  /** initial window change. This is tracked as we parse settings frames from
+   * the remote peer. If there is a positive delta, then we will make all
+   * streams readable since they may have become unstalled */
+  int64_t initial_window_update = 0;
+
+  /* deframing */
+  grpc_chttp2_deframe_transport_state deframe_state = GRPC_DTS_CLIENT_PREFIX_0;
+  uint8_t incoming_frame_type = 0;
+  uint8_t incoming_frame_flags = 0;
+  uint8_t header_eof = 0;
+  bool is_first_frame = true;
+  uint32_t expect_continuation_stream_id = 0;
+  uint32_t incoming_frame_size = 0;
+  uint32_t incoming_stream_id = 0;
+
+  /* active parser */
+  void* parser_data = nullptr;
+  grpc_chttp2_stream* incoming_stream = nullptr;
+  grpc_error* (*parser)(void* parser_user_data, grpc_chttp2_transport* t,
+                        grpc_chttp2_stream* s, const grpc_slice& slice,
+                        int is_last);
+
+  grpc_chttp2_write_cb* write_cb_pool = nullptr;
+
+  /* bdp estimator */
+  grpc_closure next_bdp_ping_timer_expired_locked;
+  grpc_closure start_bdp_ping_locked;
+  grpc_closure finish_bdp_ping_locked;
+
+  /* if non-NULL, close the transport with this error when writes are finished
+   */
+  grpc_error* close_transport_on_writes_finished = GRPC_ERROR_NONE;
+
+  /* a list of closures to run after writes are finished */
+  grpc_closure_list run_after_write = GRPC_CLOSURE_LIST_INIT;
+
+  /* buffer pool state */
+  /** have we scheduled a benign cleanup? */
+  bool benign_reclaimer_registered = false;
+  /** have we scheduled a destructive cleanup? */
+  bool destructive_reclaimer_registered = false;
+  /** benign cleanup closure */
+  grpc_closure benign_reclaimer_locked;
+  /** destructive cleanup closure */
+  grpc_closure destructive_reclaimer_locked;
+
+  /* next bdp ping timer */
+  bool have_next_bdp_ping_timer = false;
+  /** If start_bdp_ping_locked has been called */
+  bool bdp_ping_started = false;
+  grpc_timer next_bdp_ping_timer;
+
+  /* keep-alive ping support */
+  /** Closure to initialize a keepalive ping */
+  grpc_closure init_keepalive_ping_locked;
+  /** Closure to run when the keepalive ping is sent */
+  grpc_closure start_keepalive_ping_locked;
+  /** Cousure to run when the keepalive ping ack is received */
+  grpc_closure finish_keepalive_ping_locked;
+  /** Closrue to run when the keepalive ping timeouts */
+  grpc_closure keepalive_watchdog_fired_locked;
+  /** timer to initiate ping events */
+  grpc_timer keepalive_ping_timer;
+  /** watchdog to kill the transport when waiting for the keepalive ping */
+  grpc_timer keepalive_watchdog_timer;
+  /** time duration in between pings */
+  grpc_millis keepalive_time;
+  /** grace period for a ping to complete before watchdog kicks in */
+  grpc_millis keepalive_timeout;
+  /** if keepalive pings are allowed when there's no outstanding streams */
+  bool keepalive_permit_without_calls = false;
+  /** If start_keepalive_ping_locked has been called */
+  bool keepalive_ping_started = false;
+  /** keep-alive state machine state */
+  grpc_chttp2_keepalive_state keepalive_state;
+  grpc_core::ContextList* cl = nullptr;
+  grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode> channelz_socket;
+  uint32_t num_messages_in_next_write = 0;
+  /** The number of pending induced frames (SETTINGS_ACK, PINGS_ACK and
+   * RST_STREAM) in the outgoing buffer (t->qbuf). If this number goes beyond
+   * DEFAULT_MAX_PENDING_INDUCED_FRAMES, we pause reading new frames. We would
+   * only continue reading when we are able to write to the socket again,
+   * thereby reducing the number of induced frames. */
+  uint32_t num_pending_induced_frames = 0;
+  bool reading_paused_on_pending_induced_frames = false;
+};
+
+typedef enum {
+  GRPC_METADATA_NOT_PUBLISHED,
+  GRPC_METADATA_SYNTHESIZED_FROM_FAKE,
+  GRPC_METADATA_PUBLISHED_FROM_WIRE,
+  GRPC_METADATA_PUBLISHED_AT_CLOSE
+} grpc_published_metadata_method;
+
+struct grpc_chttp2_stream {
+  grpc_chttp2_stream(grpc_chttp2_transport* t, grpc_stream_refcount* refcount,
+                     const void* server_data, grpc_core::Arena* arena);
+  ~grpc_chttp2_stream();
+
+  void* context;
+  grpc_chttp2_transport* t;
+  grpc_stream_refcount* refcount;
+  // Reffer is a 0-len structure, simply reffing `t` and `refcount` in its ctor
+  // before initializing the rest of the stream, to avoid cache misses. This
+  // field MUST be right after `t` and `refcount`.
+  struct Reffer {
+    explicit Reffer(grpc_chttp2_stream* s);
+  } reffer;
+
+  grpc_closure destroy_stream;
+  grpc_closure* destroy_stream_arg;
+
+  grpc_chttp2_stream_link links[STREAM_LIST_COUNT];
+  uint8_t included[STREAM_LIST_COUNT] = {};
+
+  /** HTTP2 stream id for this stream, or zero if one has not been assigned */
+  uint32_t id = 0;
+
+  /** things the upper layers would like to send */
+  grpc_metadata_batch* send_initial_metadata = nullptr;
+  grpc_closure* send_initial_metadata_finished = nullptr;
+  grpc_metadata_batch* send_trailing_metadata = nullptr;
+  grpc_closure* send_trailing_metadata_finished = nullptr;
+
+  grpc_core::OrphanablePtr<grpc_core::ByteStream> fetching_send_message;
+  uint32_t fetched_send_message_length = 0;
+  grpc_slice fetching_slice = grpc_empty_slice();
+  int64_t next_message_end_offset;
+  int64_t flow_controlled_bytes_written = 0;
+  int64_t flow_controlled_bytes_flowed = 0;
+  grpc_closure complete_fetch_locked;
+  grpc_closure* fetching_send_message_finished = nullptr;
+
+  grpc_metadata_batch* recv_initial_metadata;
+  grpc_closure* recv_initial_metadata_ready = nullptr;
+  bool* trailing_metadata_available = nullptr;
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message;
+  grpc_closure* recv_message_ready = nullptr;
+  grpc_metadata_batch* recv_trailing_metadata;
+  grpc_closure* recv_trailing_metadata_finished = nullptr;
+
+  grpc_transport_stream_stats* collecting_stats = nullptr;
+  grpc_transport_stream_stats stats = grpc_transport_stream_stats();
+
+  /** Is this stream closed for writing. */
+  bool write_closed = false;
+  /** Is this stream reading half-closed. */
+  bool read_closed = false;
+  /** Are all published incoming byte streams closed. */
+  bool all_incoming_byte_streams_finished = false;
+  /** Has this stream seen an error.
+      If true, then pending incoming frames can be thrown away. */
+  bool seen_error = false;
+  /** Are we buffering writes on this stream? If yes, we won't become writable
+      until there's enough queued up in the flow_controlled_buffer */
+  bool write_buffering = false;
+
+  /* have we sent or received the EOS bit? */
+  bool eos_received = false;
+  bool eos_sent = false;
+
+  /** the error that resulted in this stream being read-closed */
+  grpc_error* read_closed_error = GRPC_ERROR_NONE;
+  /** the error that resulted in this stream being write-closed */
+  grpc_error* write_closed_error = GRPC_ERROR_NONE;
+
+  grpc_published_metadata_method published_metadata[2] = {};
+  bool final_metadata_requested = false;
+
+  grpc_chttp2_incoming_metadata_buffer metadata_buffer[2];
+
+  grpc_slice_buffer frame_storage; /* protected by t combiner */
+
+  grpc_closure* on_next = nullptr;  /* protected by t combiner */
+  bool pending_byte_stream = false; /* protected by t combiner */
+  // cached length of buffer to be used by the transport thread in cases where
+  // stream->pending_byte_stream == true. The value is saved before
+  // application threads are allowed to modify
+  // unprocessed_incoming_frames_buffer
+  size_t unprocessed_incoming_frames_buffer_cached_length = 0;
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  grpc_slice_buffer unprocessed_incoming_frames_buffer;
+  grpc_closure reset_byte_stream;
+  grpc_error* byte_stream_error = GRPC_ERROR_NONE; /* protected by t combiner */
+  bool received_last_frame = false;                /* protected by t combiner */
+
+  grpc_millis deadline = GRPC_MILLIS_INF_FUTURE;
+
+  /** saw some stream level error */
+  grpc_error* forced_close_error = GRPC_ERROR_NONE;
+  /** how many header frames have we received? */
+  uint8_t header_frames_received = 0;
+  /** parsing state for data frames */
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  grpc_chttp2_data_parser data_parser;
+  /** number of bytes received - reset at end of parse thread execution */
+  int64_t received_bytes = 0;
+
+  bool sent_initial_metadata = false;
+  bool sent_trailing_metadata = false;
+
+  grpc_core::PolymorphicManualConstructor<
+      grpc_core::chttp2::StreamFlowControlBase,
+      grpc_core::chttp2::StreamFlowControl,
+      grpc_core::chttp2::StreamFlowControlDisabled>
+      flow_control;
+
+  grpc_slice_buffer flow_controlled_buffer;
+
+  grpc_chttp2_write_cb* on_flow_controlled_cbs = nullptr;
+  grpc_chttp2_write_cb* on_write_finished_cbs = nullptr;
+  grpc_chttp2_write_cb* finish_after_write = nullptr;
+  size_t sending_bytes = 0;
+
+  /* Stream compression method to be used. */
+  grpc_stream_compression_method stream_compression_method =
+      GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS;
+  /* Stream decompression method to be used. */
+  grpc_stream_compression_method stream_decompression_method =
+      GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+
+  /** Whether bytes stored in unprocessed_incoming_byte_stream is decompressed
+   */
+  bool unprocessed_incoming_frames_decompressed = false;
+  /** Whether the bytes needs to be traced using Fathom */
+  bool traced = false;
+  /** gRPC header bytes that are already decompressed */
+  size_t decompressed_header_bytes = 0;
+  /** Byte counter for number of bytes written */
+  size_t byte_counter = 0;
+
+  /** Amount of uncompressed bytes sent out when compressed_data_buffer is
+   * emptied */
+  size_t uncompressed_data_size;
+  /** Stream compression compress context */
+  grpc_stream_compression_context* stream_compression_ctx;
+  /** Buffer storing data that is compressed but not sent */
+  grpc_slice_buffer compressed_data_buffer;
+
+  /** Stream compression decompress context */
+  grpc_stream_compression_context* stream_decompression_ctx;
+  /** Temporary buffer storing decompressed data.
+   * Initialized, used, and destroyed only when stream uses (non-identity)
+   * compression.
+   */
+  grpc_slice_buffer decompressed_data_buffer;
+};
+
+/** Transport writing call flow:
+    grpc_chttp2_initiate_write() is called anywhere that we know bytes need to
+    go out on the wire.
+    If no other write has been started, a task is enqueued onto our workqueue.
+    When that task executes, it obtains the global lock, and gathers the data
+    to write.
+    The global lock is dropped and we do the syscall to write.
+    After writing, a follow-up check is made to see if another round of writing
+    should be performed.
+
+    The actual call chain is documented in the implementation of this function.
+    */
+void grpc_chttp2_initiate_write(grpc_chttp2_transport* t,
+                                grpc_chttp2_initiate_write_reason reason);
+
+typedef struct {
+  /** are we writing? */
+  bool writing;
+  /** if writing: was it a complete flush (false) or a partial flush (true) */
+  bool partial;
+  /** did we queue any completions as part of beginning the write */
+  bool early_results_scheduled;
+} grpc_chttp2_begin_write_result;
+
+grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
+    grpc_chttp2_transport* t);
+void grpc_chttp2_end_write(grpc_chttp2_transport* t, grpc_error* error);
+
+/** Process one slice of incoming data; return 1 if the connection is still
+    viable after reading, or 0 if the connection should be torn down */
+grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
+                                     const grpc_slice& slice);
+
+bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s);
+/** Get a writable stream
+    returns non-zero if there was a stream available */
+bool grpc_chttp2_list_pop_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream** s);
+bool grpc_chttp2_list_remove_writable_stream(grpc_chttp2_transport* t,
+                                             grpc_chttp2_stream* s);
+
+bool grpc_chttp2_list_add_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s);
+bool grpc_chttp2_list_have_writing_streams(grpc_chttp2_transport* t);
+bool grpc_chttp2_list_pop_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream** s);
+
+void grpc_chttp2_list_add_written_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_written_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream** s);
+
+void grpc_chttp2_list_add_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream** s);
+void grpc_chttp2_list_remove_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                     grpc_chttp2_stream* s);
+
+void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream** s);
+void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s);
+
+void grpc_chttp2_list_add_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream** s);
+bool grpc_chttp2_list_remove_stalled_by_stream(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s);
+
+/********* Flow Control ***************/
+
+// Takes in a flow control action and performs all the needed operations.
+void grpc_chttp2_act_on_flowctl_action(
+    const grpc_core::chttp2::FlowControlAction& action,
+    grpc_chttp2_transport* t, grpc_chttp2_stream* s);
+
+/********* End of Flow Control ***************/
+
+inline grpc_chttp2_stream* grpc_chttp2_parsing_lookup_stream(
+    grpc_chttp2_transport* t, uint32_t id) {
+  return static_cast<grpc_chttp2_stream*>(
+      grpc_chttp2_stream_map_find(&t->stream_map, id));
+}
+grpc_chttp2_stream* grpc_chttp2_parsing_accept_stream(grpc_chttp2_transport* t,
+                                                      uint32_t id);
+
+void grpc_chttp2_add_incoming_goaway(grpc_chttp2_transport* t,
+                                     uint32_t goaway_error,
+                                     uint32_t last_stream_id,
+                                     const grpc_slice& goaway_text);
+
+void grpc_chttp2_parsing_become_skip_parser(grpc_chttp2_transport* t);
+
+void grpc_chttp2_complete_closure_step(grpc_chttp2_transport* t,
+                                       grpc_chttp2_stream* s,
+                                       grpc_closure** pclosure,
+                                       grpc_error* error, const char* desc);
+
+#define GRPC_HEADER_SIZE_IN_BYTES 5
+#define MAX_SIZE_T (~(size_t)0)
+
+#define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
+#define GRPC_CHTTP2_CLIENT_CONNECT_STRLEN \
+  (sizeof(GRPC_CHTTP2_CLIENT_CONNECT_STRING) - 1)
+
+// extern grpc_core::TraceFlag grpc_http_trace;
+// extern grpc_core::TraceFlag grpc_flowctl_trace;
+
+#define GRPC_CHTTP2_IF_TRACING(stmt)                \
+  do {                                              \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) { \
+      (stmt);                                       \
+    }                                               \
+  } while (0)
+
+void grpc_chttp2_fake_status(grpc_chttp2_transport* t,
+                             grpc_chttp2_stream* stream, grpc_error* error);
+void grpc_chttp2_mark_stream_closed(grpc_chttp2_transport* t,
+                                    grpc_chttp2_stream* s, int close_reads,
+                                    int close_writes, grpc_error* error);
+void grpc_chttp2_start_writing(grpc_chttp2_transport* t);
+
+#ifndef NDEBUG
+#define GRPC_CHTTP2_STREAM_REF(stream, reason) \
+  grpc_chttp2_stream_ref(stream, reason)
+#define GRPC_CHTTP2_STREAM_UNREF(stream, reason) \
+  grpc_chttp2_stream_unref(stream, reason)
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s, const char* reason);
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s, const char* reason);
+#else
+#define GRPC_CHTTP2_STREAM_REF(stream, reason) grpc_chttp2_stream_ref(stream)
+#define GRPC_CHTTP2_STREAM_UNREF(stream, reason) \
+  grpc_chttp2_stream_unref(stream)
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s);
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s);
+#endif
+
+#ifndef NDEBUG
+#define GRPC_CHTTP2_REF_TRANSPORT(t, r) \
+  grpc_chttp2_ref_transport(t, r, __FILE__, __LINE__)
+#define GRPC_CHTTP2_UNREF_TRANSPORT(t, r) \
+  grpc_chttp2_unref_transport(t, r, __FILE__, __LINE__)
+inline void grpc_chttp2_unref_transport(grpc_chttp2_transport* t,
+                                        const char* reason, const char* file,
+                                        int line) {
+  if (t->refs.Unref(grpc_core::DebugLocation(file, line), reason)) {
+    delete t;
+  }
+}
+inline void grpc_chttp2_ref_transport(grpc_chttp2_transport* t,
+                                      const char* reason, const char* file,
+                                      int line) {
+  t->refs.Ref(grpc_core::DebugLocation(file, line), reason);
+}
+#else
+#define GRPC_CHTTP2_REF_TRANSPORT(t, r) grpc_chttp2_ref_transport(t)
+#define GRPC_CHTTP2_UNREF_TRANSPORT(t, r) grpc_chttp2_unref_transport(t)
+inline void grpc_chttp2_unref_transport(grpc_chttp2_transport* t) {
+  if (t->refs.Unref()) {
+    delete t;
+  }
+}
+inline void grpc_chttp2_ref_transport(grpc_chttp2_transport* t) {
+  t->refs.Ref();
+}
+#endif
+
+void grpc_chttp2_ack_ping(grpc_chttp2_transport* t, uint64_t id);
+
+/** Add a new ping strike to ping_recv_state.ping_strikes. If
+    ping_recv_state.ping_strikes > ping_policy.max_ping_strikes, it sends GOAWAY
+    with error code ENHANCE_YOUR_CALM and additional debug data resembling
+    "too_many_pings" followed by immediately closing the connection. */
+void grpc_chttp2_add_ping_strike(grpc_chttp2_transport* t);
+
+/** add a ref to the stream and add it to the writable list;
+    ref will be dropped in writing.c */
+void grpc_chttp2_mark_stream_writable(grpc_chttp2_transport* t,
+                                      grpc_chttp2_stream* s);
+
+void grpc_chttp2_cancel_stream(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                               grpc_error* due_to_error);
+
+void grpc_chttp2_maybe_complete_recv_initial_metadata(grpc_chttp2_transport* t,
+                                                      grpc_chttp2_stream* s);
+void grpc_chttp2_maybe_complete_recv_message(grpc_chttp2_transport* t,
+                                             grpc_chttp2_stream* s);
+void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_chttp2_transport* t,
+                                                       grpc_chttp2_stream* s);
+
+void grpc_chttp2_fail_pending_writes(grpc_chttp2_transport* t,
+                                     grpc_chttp2_stream* s, grpc_error* error);
+
+/** Set the default keepalive configurations, must only be called at
+    initialization */
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args* args,
+                                               bool is_client);
+
+void grpc_chttp2_retry_initiate_ping(void* tp, grpc_error* error);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/stream_map.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/stream_map.h
new file mode 100644
index 0000000..9fb8826
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/stream_map.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* Data structure to map a uint32_t to a data object (represented by a void*)
+
+   Represented as a sorted array of keys, and a corresponding array of values.
+   Lookups are performed with binary search.
+   Adds are restricted to strictly higher keys than previously seen (this is
+   guaranteed by http2). */
+typedef struct {
+  uint32_t* keys;
+  void** values;
+  size_t count;
+  size_t free;
+  size_t capacity;
+} grpc_chttp2_stream_map;
+
+void grpc_chttp2_stream_map_init(grpc_chttp2_stream_map* map,
+                                 size_t initial_capacity);
+void grpc_chttp2_stream_map_destroy(grpc_chttp2_stream_map* map);
+
+/* Add a new key: given http2 semantics, new keys must always be greater than
+   existing keys - this is asserted */
+void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map* map, uint32_t key,
+                                void* value);
+
+/* Delete an existing key - returns the previous value of the key if it existed,
+   or NULL otherwise */
+void* grpc_chttp2_stream_map_delete(grpc_chttp2_stream_map* map, uint32_t key);
+
+/* Return an existing key, or NULL if it does not exist */
+void* grpc_chttp2_stream_map_find(grpc_chttp2_stream_map* map, uint32_t key);
+
+/* Return a random entry */
+void* grpc_chttp2_stream_map_rand(grpc_chttp2_stream_map* map);
+
+/* How many (populated) entries are in the stream map? */
+size_t grpc_chttp2_stream_map_size(grpc_chttp2_stream_map* map);
+
+/* Callback on each stream */
+void grpc_chttp2_stream_map_for_each(grpc_chttp2_stream_map* map,
+                                     void (*f)(void* user_data, uint32_t key,
+                                               void* value),
+                                     void* user_data);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/varint.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/varint.h
new file mode 100644
index 0000000..5a2b670
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/chttp2/transport/varint.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H
+
+#include <grpc/support/port_platform.h>
+
+/* Helpers for hpack varint encoding */
+
+/* length of a value that needs varint tail encoding (it's bigger than can be
+   bitpacked into the opcode byte) - returned value includes the length of the
+   opcode byte */
+uint32_t grpc_chttp2_hpack_varint_length(uint32_t tail_value);
+
+void grpc_chttp2_hpack_write_varint_tail(uint32_t tail_value, uint8_t* target,
+                                         uint32_t tail_length);
+
+/* maximum value that can be bitpacked with the opcode if the opcode has a
+   prefix
+   of length prefix_bits */
+#define GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits) \
+  ((uint32_t)((1 << (8 - (prefix_bits))) - 1))
+
+/* length required to bitpack a value */
+#define GRPC_CHTTP2_VARINT_LENGTH(n, prefix_bits) \
+  ((n) < GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits)   \
+       ? 1u                                       \
+       : grpc_chttp2_hpack_varint_length(         \
+             (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits)))
+
+#define GRPC_CHTTP2_WRITE_VARINT(n, prefix_bits, prefix_or, target, length)   \
+  do {                                                                        \
+    uint8_t* tgt = target;                                                    \
+    if ((length) == 1u) {                                                     \
+      (tgt)[0] = (uint8_t)((prefix_or) | (n));                                \
+    } else {                                                                  \
+      (tgt)[0] =                                                              \
+          (prefix_or) | (uint8_t)GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits);      \
+      grpc_chttp2_hpack_write_varint_tail(                                    \
+          (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits), (tgt) + 1, (length)-1); \
+    }                                                                         \
+  } while (0)
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/inproc/inproc_transport.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/inproc/inproc_transport.h
new file mode 100644
index 0000000..049d140
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/transport/inproc/inproc_transport.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H
+#define GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport_impl.h"
+
+grpc_channel* grpc_inproc_channel_create(grpc_server* server,
+                                         grpc_channel_args* args,
+                                         void* reserved);
+
+extern grpc_core::TraceFlag grpc_inproc_trace;
+
+void grpc_inproc_transport_init(void);
+void grpc_inproc_transport_shutdown(void);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h
new file mode 100644
index 0000000..4e620ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/deprecation.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_
+#define ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/resource.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/resource.upb.h
new file mode 100644
index 0000000..9902a17
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/annotations/resource.upb.h	
@@ -0,0 +1,78 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/resource.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_
+#define ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_annotations_ResourceAnnotation;
+typedef struct envoy_annotations_ResourceAnnotation envoy_annotations_ResourceAnnotation;
+extern const upb_msglayout envoy_annotations_ResourceAnnotation_msginit;
+
+
+/* envoy.annotations.ResourceAnnotation */
+
+UPB_INLINE envoy_annotations_ResourceAnnotation *envoy_annotations_ResourceAnnotation_new(upb_arena *arena) {
+  return (envoy_annotations_ResourceAnnotation *)upb_msg_new(&envoy_annotations_ResourceAnnotation_msginit, arena);
+}
+UPB_INLINE envoy_annotations_ResourceAnnotation *envoy_annotations_ResourceAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_annotations_ResourceAnnotation *ret = envoy_annotations_ResourceAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_annotations_ResourceAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_annotations_ResourceAnnotation_serialize(const envoy_annotations_ResourceAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_annotations_ResourceAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_annotations_ResourceAnnotation_type(const envoy_annotations_ResourceAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_annotations_ResourceAnnotation_set_type(envoy_annotations_ResourceAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h
new file mode 100644
index 0000000..de2b13c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h	
@@ -0,0 +1,929 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/auth/cert.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_
+#define ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_auth_TlsParameters;
+struct envoy_api_v2_auth_PrivateKeyProvider;
+struct envoy_api_v2_auth_TlsCertificate;
+struct envoy_api_v2_auth_TlsSessionTicketKeys;
+struct envoy_api_v2_auth_CertificateValidationContext;
+struct envoy_api_v2_auth_CommonTlsContext;
+struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext;
+struct envoy_api_v2_auth_UpstreamTlsContext;
+struct envoy_api_v2_auth_DownstreamTlsContext;
+struct envoy_api_v2_auth_GenericSecret;
+struct envoy_api_v2_auth_SdsSecretConfig;
+struct envoy_api_v2_auth_Secret;
+typedef struct envoy_api_v2_auth_TlsParameters envoy_api_v2_auth_TlsParameters;
+typedef struct envoy_api_v2_auth_PrivateKeyProvider envoy_api_v2_auth_PrivateKeyProvider;
+typedef struct envoy_api_v2_auth_TlsCertificate envoy_api_v2_auth_TlsCertificate;
+typedef struct envoy_api_v2_auth_TlsSessionTicketKeys envoy_api_v2_auth_TlsSessionTicketKeys;
+typedef struct envoy_api_v2_auth_CertificateValidationContext envoy_api_v2_auth_CertificateValidationContext;
+typedef struct envoy_api_v2_auth_CommonTlsContext envoy_api_v2_auth_CommonTlsContext;
+typedef struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext;
+typedef struct envoy_api_v2_auth_UpstreamTlsContext envoy_api_v2_auth_UpstreamTlsContext;
+typedef struct envoy_api_v2_auth_DownstreamTlsContext envoy_api_v2_auth_DownstreamTlsContext;
+typedef struct envoy_api_v2_auth_GenericSecret envoy_api_v2_auth_GenericSecret;
+typedef struct envoy_api_v2_auth_SdsSecretConfig envoy_api_v2_auth_SdsSecretConfig;
+typedef struct envoy_api_v2_auth_Secret envoy_api_v2_auth_Secret;
+extern const upb_msglayout envoy_api_v2_auth_TlsParameters_msginit;
+extern const upb_msglayout envoy_api_v2_auth_PrivateKeyProvider_msginit;
+extern const upb_msglayout envoy_api_v2_auth_TlsCertificate_msginit;
+extern const upb_msglayout envoy_api_v2_auth_TlsSessionTicketKeys_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CertificateValidationContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CommonTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_UpstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_DownstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_GenericSecret_msginit;
+extern const upb_msglayout envoy_api_v2_auth_SdsSecretConfig_msginit;
+extern const upb_msglayout envoy_api_v2_auth_Secret_msginit;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_DataSource;
+struct envoy_type_matcher_StringMatcher;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_auth_CertificateValidationContext_VERIFY_TRUST_CHAIN = 0,
+  envoy_api_v2_auth_CertificateValidationContext_ACCEPT_UNTRUSTED = 1
+} envoy_api_v2_auth_CertificateValidationContext_TrustChainVerification;
+
+typedef enum {
+  envoy_api_v2_auth_TlsParameters_TLS_AUTO = 0,
+  envoy_api_v2_auth_TlsParameters_TLSv1_0 = 1,
+  envoy_api_v2_auth_TlsParameters_TLSv1_1 = 2,
+  envoy_api_v2_auth_TlsParameters_TLSv1_2 = 3,
+  envoy_api_v2_auth_TlsParameters_TLSv1_3 = 4
+} envoy_api_v2_auth_TlsParameters_TlsProtocol;
+
+
+/* envoy.api.v2.auth.TlsParameters */
+
+UPB_INLINE envoy_api_v2_auth_TlsParameters *envoy_api_v2_auth_TlsParameters_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsParameters *)upb_msg_new(&envoy_api_v2_auth_TlsParameters_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsParameters *envoy_api_v2_auth_TlsParameters_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsParameters *ret = envoy_api_v2_auth_TlsParameters_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsParameters_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsParameters_serialize(const envoy_api_v2_auth_TlsParameters *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsParameters_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_auth_TlsParameters_tls_minimum_protocol_version(const envoy_api_v2_auth_TlsParameters *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t envoy_api_v2_auth_TlsParameters_tls_maximum_protocol_version(const envoy_api_v2_auth_TlsParameters *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_TlsParameters_cipher_suites(const envoy_api_v2_auth_TlsParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(16, 16), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_TlsParameters_ecdh_curves(const envoy_api_v2_auth_TlsParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(20, 24), len); }
+
+UPB_INLINE void envoy_api_v2_auth_TlsParameters_set_tls_minimum_protocol_version(envoy_api_v2_auth_TlsParameters *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsParameters_set_tls_maximum_protocol_version(envoy_api_v2_auth_TlsParameters *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_mutable_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_resize_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(16, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_TlsParameters_add_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_mutable_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 24), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_resize_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 24), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_TlsParameters_add_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 24), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.auth.PrivateKeyProvider */
+
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider *envoy_api_v2_auth_PrivateKeyProvider_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_PrivateKeyProvider *)upb_msg_new(&envoy_api_v2_auth_PrivateKeyProvider_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider *envoy_api_v2_auth_PrivateKeyProvider_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_PrivateKeyProvider *ret = envoy_api_v2_auth_PrivateKeyProvider_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_PrivateKeyProvider_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_PrivateKeyProvider_serialize(const envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_PrivateKeyProvider_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_config = 2,
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_typed_config = 3,
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_NOT_SET = 0
+} envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases envoy_api_v2_auth_PrivateKeyProvider_config_type_case(const envoy_api_v2_auth_PrivateKeyProvider* msg) { return (envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_auth_PrivateKeyProvider_provider_name(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_auth_PrivateKeyProvider_has_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_auth_PrivateKeyProvider_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_PrivateKeyProvider_has_typed_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_auth_PrivateKeyProvider_typed_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_provider_name(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_config(envoy_api_v2_auth_PrivateKeyProvider *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_auth_PrivateKeyProvider_mutable_config(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_auth_PrivateKeyProvider_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_PrivateKeyProvider_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_typed_config(envoy_api_v2_auth_PrivateKeyProvider *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_auth_PrivateKeyProvider_mutable_typed_config(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_auth_PrivateKeyProvider_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_PrivateKeyProvider_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.TlsCertificate */
+
+UPB_INLINE envoy_api_v2_auth_TlsCertificate *envoy_api_v2_auth_TlsCertificate_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsCertificate *)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate *envoy_api_v2_auth_TlsCertificate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsCertificate *ret = envoy_api_v2_auth_TlsCertificate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsCertificate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsCertificate_serialize(const envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsCertificate_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_certificate_chain(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_private_key(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_password(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_ocsp_staple(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* const* envoy_api_v2_auth_TlsCertificate_signed_certificate_timestamp(const envoy_api_v2_auth_TlsCertificate *msg, size_t *len) { return (const struct envoy_api_v2_core_DataSource* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const envoy_api_v2_auth_PrivateKeyProvider* envoy_api_v2_auth_TlsCertificate_private_key_provider(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_PrivateKeyProvider*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_certificate_chain(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_certificate_chain(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_certificate_chain(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_certificate_chain(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_private_key(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_private_key(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_private_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_private_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_password(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_password(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_password(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_password(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_ocsp_staple(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_ocsp_staple(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_ocsp_staple(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_ocsp_staple(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsCertificate_mutable_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, size_t *len) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsCertificate_resize_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_add_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_private_key_provider(envoy_api_v2_auth_TlsCertificate *msg, envoy_api_v2_auth_PrivateKeyProvider* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_PrivateKeyProvider*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_PrivateKeyProvider* envoy_api_v2_auth_TlsCertificate_mutable_private_key_provider(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_PrivateKeyProvider* sub = (struct envoy_api_v2_auth_PrivateKeyProvider*)envoy_api_v2_auth_TlsCertificate_private_key_provider(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_PrivateKeyProvider*)upb_msg_new(&envoy_api_v2_auth_PrivateKeyProvider_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_private_key_provider(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.TlsSessionTicketKeys */
+
+UPB_INLINE envoy_api_v2_auth_TlsSessionTicketKeys *envoy_api_v2_auth_TlsSessionTicketKeys_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsSessionTicketKeys *)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsSessionTicketKeys *envoy_api_v2_auth_TlsSessionTicketKeys_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsSessionTicketKeys *ret = envoy_api_v2_auth_TlsSessionTicketKeys_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsSessionTicketKeys_serialize(const envoy_api_v2_auth_TlsSessionTicketKeys *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* const* envoy_api_v2_auth_TlsSessionTicketKeys_keys(const envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t *len) { return (const struct envoy_api_v2_core_DataSource* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsSessionTicketKeys_mutable_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t *len) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsSessionTicketKeys_resize_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsSessionTicketKeys_add_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.auth.CertificateValidationContext */
+
+UPB_INLINE envoy_api_v2_auth_CertificateValidationContext *envoy_api_v2_auth_CertificateValidationContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CertificateValidationContext *)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CertificateValidationContext *envoy_api_v2_auth_CertificateValidationContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CertificateValidationContext *ret = envoy_api_v2_auth_CertificateValidationContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CertificateValidationContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CertificateValidationContext_serialize(const envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CertificateValidationContext_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_trusted_ca(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_certificate_hash(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_certificate_spki(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_subject_alt_name(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_require_ocsp_staple(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_require_signed_certificate_timestamp(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_crl(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_allow_expired_certificate(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* const* envoy_api_v2_auth_CertificateValidationContext_match_subject_alt_names(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (const struct envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE int32_t envoy_api_v2_auth_CertificateValidationContext_trust_chain_verification(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_trusted_ca(envoy_api_v2_auth_CertificateValidationContext *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_mutable_trusted_ca(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_CertificateValidationContext_trusted_ca(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_trusted_ca(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_require_ocsp_staple(envoy_api_v2_auth_CertificateValidationContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_mutable_require_ocsp_staple(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_CertificateValidationContext_require_ocsp_staple(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_require_ocsp_staple(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_require_signed_certificate_timestamp(envoy_api_v2_auth_CertificateValidationContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_mutable_require_signed_certificate_timestamp(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_CertificateValidationContext_require_signed_certificate_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_require_signed_certificate_timestamp(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_crl(envoy_api_v2_auth_CertificateValidationContext *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_mutable_crl(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_CertificateValidationContext_crl(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_crl(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_allow_expired_certificate(envoy_api_v2_auth_CertificateValidationContext *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_auth_CertificateValidationContext_mutable_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_auth_CertificateValidationContext_resize_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_auth_CertificateValidationContext_add_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_trust_chain_verification(envoy_api_v2_auth_CertificateValidationContext *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.auth.CommonTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext *envoy_api_v2_auth_CommonTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CommonTlsContext *)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext *envoy_api_v2_auth_CommonTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CommonTlsContext *ret = envoy_api_v2_auth_CommonTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CommonTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CommonTlsContext_serialize(const envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CommonTlsContext_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_validation_context = 3,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_validation_context_sds_secret_config = 7,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_combined_validation_context = 8,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_NOT_SET = 0
+} envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases envoy_api_v2_auth_CommonTlsContext_validation_context_type_case(const envoy_api_v2_auth_CommonTlsContext* msg) { return (envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE const envoy_api_v2_auth_TlsParameters* envoy_api_v2_auth_CommonTlsContext_tls_params(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_TlsParameters*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_auth_TlsCertificate* const* envoy_api_v2_auth_CommonTlsContext_tls_certificates(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (const envoy_api_v2_auth_TlsCertificate* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 3); }
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 3, NULL); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CommonTlsContext_alpn_protocols(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* const* envoy_api_v2_auth_CommonTlsContext_tls_certificate_sds_secret_configs(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (const envoy_api_v2_auth_SdsSecretConfig* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 7); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 7, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_combined_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 8); }
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_combined_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 8, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_tls_params(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_TlsParameters* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_TlsParameters*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsParameters* envoy_api_v2_auth_CommonTlsContext_mutable_tls_params(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsParameters* sub = (struct envoy_api_v2_auth_TlsParameters*)envoy_api_v2_auth_CommonTlsContext_tls_params(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsParameters*)upb_msg_new(&envoy_api_v2_auth_TlsParameters_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_tls_params(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate** envoy_api_v2_auth_CommonTlsContext_mutable_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (envoy_api_v2_auth_TlsCertificate**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate** envoy_api_v2_auth_CommonTlsContext_resize_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsCertificate**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_CommonTlsContext_add_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsCertificate* sub = (struct envoy_api_v2_auth_TlsCertificate*)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 3);
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_mutable_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CommonTlsContext_mutable_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CommonTlsContext_resize_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_add_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig** envoy_api_v2_auth_CommonTlsContext_mutable_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (envoy_api_v2_auth_SdsSecretConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig** envoy_api_v2_auth_CommonTlsContext_resize_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_auth_SdsSecretConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_add_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 7);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_mutable_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_CommonTlsContext_validation_context_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_validation_context_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_combined_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 8);
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_mutable_combined_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* sub = (struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_combined_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_combined_validation_context(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.CommonTlsContext.CombinedCertificateValidationContext */
+
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *ret = envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_serialize(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_default_validation_context(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_default_validation_context(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_mutable_default_validation_context(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_default_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_default_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_mutable_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_validation_context_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_validation_context_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.UpstreamTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_UpstreamTlsContext *envoy_api_v2_auth_UpstreamTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_UpstreamTlsContext *)upb_msg_new(&envoy_api_v2_auth_UpstreamTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_UpstreamTlsContext *envoy_api_v2_auth_UpstreamTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_UpstreamTlsContext *ret = envoy_api_v2_auth_UpstreamTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_UpstreamTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_UpstreamTlsContext_serialize(const envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_UpstreamTlsContext_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_UpstreamTlsContext_common_tls_context(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_auth_UpstreamTlsContext_sni(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_auth_UpstreamTlsContext_allow_renegotiation(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_auth_UpstreamTlsContext_max_session_keys(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_common_tls_context(envoy_api_v2_auth_UpstreamTlsContext *msg, envoy_api_v2_auth_CommonTlsContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_UpstreamTlsContext_mutable_common_tls_context(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext* sub = (struct envoy_api_v2_auth_CommonTlsContext*)envoy_api_v2_auth_UpstreamTlsContext_common_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_UpstreamTlsContext_set_common_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_sni(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_allow_renegotiation(envoy_api_v2_auth_UpstreamTlsContext *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_max_session_keys(envoy_api_v2_auth_UpstreamTlsContext *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_auth_UpstreamTlsContext_mutable_max_session_keys(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_auth_UpstreamTlsContext_max_session_keys(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_UpstreamTlsContext_set_max_session_keys(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.DownstreamTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext *envoy_api_v2_auth_DownstreamTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_DownstreamTlsContext *)upb_msg_new(&envoy_api_v2_auth_DownstreamTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext *envoy_api_v2_auth_DownstreamTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_DownstreamTlsContext *ret = envoy_api_v2_auth_DownstreamTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_DownstreamTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_DownstreamTlsContext_serialize(const envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_DownstreamTlsContext_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_session_ticket_keys = 4,
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_session_ticket_keys_sds_secret_config = 5,
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_NOT_SET = 0
+} envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_case(const envoy_api_v2_auth_DownstreamTlsContext* msg) { return (envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_DownstreamTlsContext_common_tls_context(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_require_client_certificate(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_require_sni(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_auth_DownstreamTlsContext_has_session_ticket_keys(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_DownstreamTlsContext_has_session_ticket_keys_sds_secret_config(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_sds_secret_config(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 5, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_auth_DownstreamTlsContext_session_timeout(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_common_tls_context(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_CommonTlsContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_DownstreamTlsContext_mutable_common_tls_context(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext* sub = (struct envoy_api_v2_auth_CommonTlsContext*)envoy_api_v2_auth_DownstreamTlsContext_common_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_common_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_require_client_certificate(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_mutable_require_client_certificate(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_DownstreamTlsContext_require_client_certificate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_require_client_certificate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_require_sni(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_mutable_require_sni(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_DownstreamTlsContext_require_sni(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_require_sni(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_TlsSessionTicketKeys* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_ticket_keys(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsSessionTicketKeys* sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys_sds_secret_config(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_ticket_keys_sds_secret_config(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_timeout(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_timeout(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_auth_DownstreamTlsContext_session_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_timeout(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.GenericSecret */
+
+UPB_INLINE envoy_api_v2_auth_GenericSecret *envoy_api_v2_auth_GenericSecret_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_GenericSecret *)upb_msg_new(&envoy_api_v2_auth_GenericSecret_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_GenericSecret *envoy_api_v2_auth_GenericSecret_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_GenericSecret *ret = envoy_api_v2_auth_GenericSecret_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_GenericSecret_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_GenericSecret_serialize(const envoy_api_v2_auth_GenericSecret *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_GenericSecret_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_GenericSecret_secret(const envoy_api_v2_auth_GenericSecret *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_auth_GenericSecret_set_secret(envoy_api_v2_auth_GenericSecret *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_GenericSecret_mutable_secret(envoy_api_v2_auth_GenericSecret *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_GenericSecret_secret(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_GenericSecret_set_secret(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.SdsSecretConfig */
+
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig *envoy_api_v2_auth_SdsSecretConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_SdsSecretConfig *)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig *envoy_api_v2_auth_SdsSecretConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_SdsSecretConfig *ret = envoy_api_v2_auth_SdsSecretConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_SdsSecretConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_SdsSecretConfig_serialize(const envoy_api_v2_auth_SdsSecretConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_SdsSecretConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_auth_SdsSecretConfig_name(const envoy_api_v2_auth_SdsSecretConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_auth_SdsSecretConfig_sds_config(const envoy_api_v2_auth_SdsSecretConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_auth_SdsSecretConfig_set_name(envoy_api_v2_auth_SdsSecretConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_SdsSecretConfig_set_sds_config(envoy_api_v2_auth_SdsSecretConfig *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_auth_SdsSecretConfig_mutable_sds_config(envoy_api_v2_auth_SdsSecretConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_auth_SdsSecretConfig_sds_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_SdsSecretConfig_set_sds_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.Secret */
+
+UPB_INLINE envoy_api_v2_auth_Secret *envoy_api_v2_auth_Secret_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_Secret *)upb_msg_new(&envoy_api_v2_auth_Secret_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_Secret *envoy_api_v2_auth_Secret_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_Secret *ret = envoy_api_v2_auth_Secret_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_Secret_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_Secret_serialize(const envoy_api_v2_auth_Secret *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_Secret_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_Secret_type_tls_certificate = 2,
+  envoy_api_v2_auth_Secret_type_session_ticket_keys = 3,
+  envoy_api_v2_auth_Secret_type_validation_context = 4,
+  envoy_api_v2_auth_Secret_type_generic_secret = 5,
+  envoy_api_v2_auth_Secret_type_NOT_SET = 0
+} envoy_api_v2_auth_Secret_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_Secret_type_oneofcases envoy_api_v2_auth_Secret_type_case(const envoy_api_v2_auth_Secret* msg) { return (envoy_api_v2_auth_Secret_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_auth_Secret_name(const envoy_api_v2_auth_Secret *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_tls_certificate(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_Secret_tls_certificate(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsCertificate*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_session_ticket_keys(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_Secret_session_ticket_keys(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_validation_context(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_Secret_validation_context(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_generic_secret(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const envoy_api_v2_auth_GenericSecret* envoy_api_v2_auth_Secret_generic_secret(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_GenericSecret*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_Secret_set_name(envoy_api_v2_auth_Secret *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_tls_certificate(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_TlsCertificate* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsCertificate*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_Secret_mutable_tls_certificate(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsCertificate* sub = (struct envoy_api_v2_auth_TlsCertificate*)envoy_api_v2_auth_Secret_tls_certificate(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsCertificate*)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_tls_certificate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_session_ticket_keys(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_TlsSessionTicketKeys* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_Secret_mutable_session_ticket_keys(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsSessionTicketKeys* sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)envoy_api_v2_auth_Secret_session_ticket_keys(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_session_ticket_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_validation_context(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_Secret_mutable_validation_context(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_Secret_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_generic_secret(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_GenericSecret* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_GenericSecret*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_api_v2_auth_GenericSecret* envoy_api_v2_auth_Secret_mutable_generic_secret(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_GenericSecret* sub = (struct envoy_api_v2_auth_GenericSecret*)envoy_api_v2_auth_Secret_generic_secret(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_GenericSecret*)upb_msg_new(&envoy_api_v2_auth_GenericSecret_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_generic_secret(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h
new file mode 100644
index 0000000..51e566e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CDS_PROTO_UPB_H_
+#define ENVOY_API_V2_CDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h"
+#else
+  #include  "envoy/api/v2/cluster.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_CdsDummy;
+typedef struct envoy_api_v2_CdsDummy envoy_api_v2_CdsDummy;
+extern const upb_msglayout envoy_api_v2_CdsDummy_msginit;
+
+
+/* envoy.api.v2.CdsDummy */
+
+UPB_INLINE envoy_api_v2_CdsDummy *envoy_api_v2_CdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_CdsDummy *)upb_msg_new(&envoy_api_v2_CdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_CdsDummy *envoy_api_v2_CdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_CdsDummy *ret = envoy_api_v2_CdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_CdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_CdsDummy_serialize(const envoy_api_v2_CdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_CdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h
new file mode 100644
index 0000000..81ba550
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h	
@@ -0,0 +1,1435 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_Cluster;
+struct envoy_api_v2_Cluster_TransportSocketMatch;
+struct envoy_api_v2_Cluster_CustomClusterType;
+struct envoy_api_v2_Cluster_EdsClusterConfig;
+struct envoy_api_v2_Cluster_LbSubsetConfig;
+struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector;
+struct envoy_api_v2_Cluster_LeastRequestLbConfig;
+struct envoy_api_v2_Cluster_RingHashLbConfig;
+struct envoy_api_v2_Cluster_OriginalDstLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig;
+struct envoy_api_v2_Cluster_RefreshRate;
+struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry;
+struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry;
+struct envoy_api_v2_LoadBalancingPolicy;
+struct envoy_api_v2_LoadBalancingPolicy_Policy;
+struct envoy_api_v2_UpstreamBindConfig;
+struct envoy_api_v2_UpstreamConnectionOptions;
+typedef struct envoy_api_v2_Cluster envoy_api_v2_Cluster;
+typedef struct envoy_api_v2_Cluster_TransportSocketMatch envoy_api_v2_Cluster_TransportSocketMatch;
+typedef struct envoy_api_v2_Cluster_CustomClusterType envoy_api_v2_Cluster_CustomClusterType;
+typedef struct envoy_api_v2_Cluster_EdsClusterConfig envoy_api_v2_Cluster_EdsClusterConfig;
+typedef struct envoy_api_v2_Cluster_LbSubsetConfig envoy_api_v2_Cluster_LbSubsetConfig;
+typedef struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector;
+typedef struct envoy_api_v2_Cluster_LeastRequestLbConfig envoy_api_v2_Cluster_LeastRequestLbConfig;
+typedef struct envoy_api_v2_Cluster_RingHashLbConfig envoy_api_v2_Cluster_RingHashLbConfig;
+typedef struct envoy_api_v2_Cluster_OriginalDstLbConfig envoy_api_v2_Cluster_OriginalDstLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig envoy_api_v2_Cluster_CommonLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig;
+typedef struct envoy_api_v2_Cluster_RefreshRate envoy_api_v2_Cluster_RefreshRate;
+typedef struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry;
+typedef struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry;
+typedef struct envoy_api_v2_LoadBalancingPolicy envoy_api_v2_LoadBalancingPolicy;
+typedef struct envoy_api_v2_LoadBalancingPolicy_Policy envoy_api_v2_LoadBalancingPolicy_Policy;
+typedef struct envoy_api_v2_UpstreamBindConfig envoy_api_v2_UpstreamBindConfig;
+typedef struct envoy_api_v2_UpstreamConnectionOptions envoy_api_v2_UpstreamConnectionOptions;
+extern const upb_msglayout envoy_api_v2_Cluster_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_TransportSocketMatch_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CustomClusterType_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_EdsClusterConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LeastRequestLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_RingHashLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_OriginalDstLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_RefreshRate_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_LoadBalancingPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_LoadBalancingPolicy_Policy_msginit;
+extern const upb_msglayout envoy_api_v2_UpstreamBindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_UpstreamConnectionOptions_msginit;
+struct envoy_api_v2_ClusterLoadAssignment;
+struct envoy_api_v2_auth_UpstreamTlsContext;
+struct envoy_api_v2_cluster_CircuitBreakers;
+struct envoy_api_v2_cluster_Filter;
+struct envoy_api_v2_cluster_OutlierDetection;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_BindConfig;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_HealthCheck;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_TcpKeepalive;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_api_v2_core_UpstreamHttpProtocolOptions;
+struct envoy_type_Percent;
+struct google_protobuf_Any;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+struct google_protobuf_UInt64Value;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_msginit;
+extern const upb_msglayout envoy_api_v2_auth_UpstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_Filter_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_OutlierDetection_msginit;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_BindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_TcpKeepalive_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+extern const upb_msglayout google_protobuf_UInt64Value_msginit;
+
+typedef enum {
+  envoy_api_v2_Cluster_USE_CONFIGURED_PROTOCOL = 0,
+  envoy_api_v2_Cluster_USE_DOWNSTREAM_PROTOCOL = 1
+} envoy_api_v2_Cluster_ClusterProtocolSelection;
+
+typedef enum {
+  envoy_api_v2_Cluster_STATIC = 0,
+  envoy_api_v2_Cluster_STRICT_DNS = 1,
+  envoy_api_v2_Cluster_LOGICAL_DNS = 2,
+  envoy_api_v2_Cluster_EDS = 3,
+  envoy_api_v2_Cluster_ORIGINAL_DST = 4
+} envoy_api_v2_Cluster_DiscoveryType;
+
+typedef enum {
+  envoy_api_v2_Cluster_AUTO = 0,
+  envoy_api_v2_Cluster_V4_ONLY = 1,
+  envoy_api_v2_Cluster_V6_ONLY = 2
+} envoy_api_v2_Cluster_DnsLookupFamily;
+
+typedef enum {
+  envoy_api_v2_Cluster_ROUND_ROBIN = 0,
+  envoy_api_v2_Cluster_LEAST_REQUEST = 1,
+  envoy_api_v2_Cluster_RING_HASH = 2,
+  envoy_api_v2_Cluster_RANDOM = 3,
+  envoy_api_v2_Cluster_ORIGINAL_DST_LB = 4,
+  envoy_api_v2_Cluster_MAGLEV = 5,
+  envoy_api_v2_Cluster_CLUSTER_PROVIDED = 6,
+  envoy_api_v2_Cluster_LOAD_BALANCING_POLICY_CONFIG = 7
+} envoy_api_v2_Cluster_LbPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_LbSubsetConfig_NO_FALLBACK = 0,
+  envoy_api_v2_Cluster_LbSubsetConfig_ANY_ENDPOINT = 1,
+  envoy_api_v2_Cluster_LbSubsetConfig_DEFAULT_SUBSET = 2
+} envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetFallbackPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_NOT_DEFINED = 0,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_NO_FALLBACK = 1,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_ANY_ENDPOINT = 2,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_DEFAULT_SUBSET = 3,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_KEYS_SUBSET = 4
+} envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_LbSubsetSelectorFallbackPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_RingHashLbConfig_XX_HASH = 0,
+  envoy_api_v2_Cluster_RingHashLbConfig_MURMUR_HASH_2 = 1
+} envoy_api_v2_Cluster_RingHashLbConfig_HashFunction;
+
+
+/* envoy.api.v2.Cluster */
+
+UPB_INLINE envoy_api_v2_Cluster *envoy_api_v2_Cluster_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster *)upb_msg_new(&envoy_api_v2_Cluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster *envoy_api_v2_Cluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster *ret = envoy_api_v2_Cluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_serialize(const envoy_api_v2_Cluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Cluster_cluster_discovery_type_type = 2,
+  envoy_api_v2_Cluster_cluster_discovery_type_cluster_type = 38,
+  envoy_api_v2_Cluster_cluster_discovery_type_NOT_SET = 0
+} envoy_api_v2_Cluster_cluster_discovery_type_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_cluster_discovery_type_oneofcases envoy_api_v2_Cluster_cluster_discovery_type_case(const envoy_api_v2_Cluster* msg) { return (envoy_api_v2_Cluster_cluster_discovery_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(176, 312)); }
+
+typedef enum {
+  envoy_api_v2_Cluster_lb_config_ring_hash_lb_config = 23,
+  envoy_api_v2_Cluster_lb_config_original_dst_lb_config = 34,
+  envoy_api_v2_Cluster_lb_config_least_request_lb_config = 37,
+  envoy_api_v2_Cluster_lb_config_NOT_SET = 0
+} envoy_api_v2_Cluster_lb_config_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_lb_config_oneofcases envoy_api_v2_Cluster_lb_config_case(const envoy_api_v2_Cluster* msg) { return (envoy_api_v2_Cluster_lb_config_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(184, 328)); }
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_name(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_type(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(176, 312), 2); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_type(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(168, 304), UPB_SIZE(176, 312), 2, envoy_api_v2_Cluster_STATIC); }
+UPB_INLINE const envoy_api_v2_Cluster_EdsClusterConfig* envoy_api_v2_Cluster_eds_cluster_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_EdsClusterConfig*, UPB_SIZE(48, 64)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_connect_timeout(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(52, 72)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_per_connection_buffer_limit_bytes(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 80)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_lb_policy(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* const* envoy_api_v2_Cluster_hosts(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_Address* const*)_upb_array_accessor(msg, UPB_SIZE(140, 248), len); }
+UPB_INLINE const struct envoy_api_v2_core_HealthCheck* const* envoy_api_v2_Cluster_health_checks(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_HealthCheck* const*)_upb_array_accessor(msg, UPB_SIZE(144, 256), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_max_requests_per_connection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(60, 88)); }
+UPB_INLINE const struct envoy_api_v2_cluster_CircuitBreakers* envoy_api_v2_Cluster_circuit_breakers(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_cluster_CircuitBreakers*, UPB_SIZE(64, 96)); }
+UPB_INLINE const struct envoy_api_v2_auth_UpstreamTlsContext* envoy_api_v2_Cluster_tls_context(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_auth_UpstreamTlsContext*, UPB_SIZE(68, 104)); }
+UPB_INLINE const struct envoy_api_v2_core_Http1ProtocolOptions* envoy_api_v2_Cluster_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE const struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_Cluster_http2_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(76, 120)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_dns_refresh_rate(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(80, 128)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_dns_lookup_family(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* const* envoy_api_v2_Cluster_dns_resolvers(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_Address* const*)_upb_array_accessor(msg, UPB_SIZE(148, 264), len); }
+UPB_INLINE const struct envoy_api_v2_cluster_OutlierDetection* envoy_api_v2_Cluster_outlier_detection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_cluster_OutlierDetection*, UPB_SIZE(84, 136)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_cleanup_interval(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(88, 144)); }
+UPB_INLINE const struct envoy_api_v2_core_BindConfig* envoy_api_v2_Cluster_upstream_bind_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_BindConfig*, UPB_SIZE(92, 152)); }
+UPB_INLINE const envoy_api_v2_Cluster_LbSubsetConfig* envoy_api_v2_Cluster_lb_subset_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_LbSubsetConfig*, UPB_SIZE(96, 160)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_ring_hash_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 23); }
+UPB_INLINE const envoy_api_v2_Cluster_RingHashLbConfig* envoy_api_v2_Cluster_ring_hash_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_RingHashLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 23, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_transport_socket(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(100, 168)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_Cluster_metadata(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(104, 176)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_protocol_selection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig* envoy_api_v2_Cluster_common_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_CommonLbConfig*, UPB_SIZE(108, 184)); }
+UPB_INLINE upb_strview envoy_api_v2_Cluster_alt_stat_name(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE const struct envoy_api_v2_core_HttpProtocolOptions* envoy_api_v2_Cluster_common_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(112, 192)); }
+UPB_INLINE const envoy_api_v2_UpstreamConnectionOptions* envoy_api_v2_Cluster_upstream_connection_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_UpstreamConnectionOptions*, UPB_SIZE(116, 200)); }
+UPB_INLINE bool envoy_api_v2_Cluster_close_connections_on_host_health_failure(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_api_v2_Cluster_drain_connections_on_host_removal(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)); }
+UPB_INLINE const struct envoy_api_v2_ClusterLoadAssignment* envoy_api_v2_Cluster_load_assignment(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_ClusterLoadAssignment*, UPB_SIZE(120, 208)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_original_dst_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 34); }
+UPB_INLINE const envoy_api_v2_Cluster_OriginalDstLbConfig* envoy_api_v2_Cluster_original_dst_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_OriginalDstLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 34, NULL); }
+UPB_INLINE const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* const* envoy_api_v2_Cluster_extension_protocol_options(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(152, 272), len); }
+UPB_INLINE const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* const* envoy_api_v2_Cluster_typed_extension_protocol_options(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(156, 280), len); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_least_request_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 37); }
+UPB_INLINE const envoy_api_v2_Cluster_LeastRequestLbConfig* envoy_api_v2_Cluster_least_request_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_LeastRequestLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 37, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_cluster_type(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(176, 312), 38); }
+UPB_INLINE const envoy_api_v2_Cluster_CustomClusterType* envoy_api_v2_Cluster_cluster_type(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CustomClusterType*, UPB_SIZE(168, 304), UPB_SIZE(176, 312), 38, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_respect_dns_ttl(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)); }
+UPB_INLINE const struct envoy_api_v2_cluster_Filter* const* envoy_api_v2_Cluster_filters(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_cluster_Filter* const*)_upb_array_accessor(msg, UPB_SIZE(160, 288), len); }
+UPB_INLINE const envoy_api_v2_LoadBalancingPolicy* envoy_api_v2_Cluster_load_balancing_policy(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_LoadBalancingPolicy*, UPB_SIZE(124, 216)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_lrs_server(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(128, 224)); }
+UPB_INLINE const envoy_api_v2_Cluster_TransportSocketMatch* const* envoy_api_v2_Cluster_transport_socket_matches(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_TransportSocketMatch* const*)_upb_array_accessor(msg, UPB_SIZE(164, 296), len); }
+UPB_INLINE const envoy_api_v2_Cluster_RefreshRate* envoy_api_v2_Cluster_dns_failure_refresh_rate(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_RefreshRate*, UPB_SIZE(132, 232)); }
+UPB_INLINE bool envoy_api_v2_Cluster_use_tcp_for_dns_lookups(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)); }
+UPB_INLINE const struct envoy_api_v2_core_UpstreamHttpProtocolOptions* envoy_api_v2_Cluster_upstream_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_UpstreamHttpProtocolOptions*, UPB_SIZE(136, 240)); }
+UPB_INLINE bool envoy_api_v2_Cluster_track_timeout_budgets(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_set_name(envoy_api_v2_Cluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_type(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(168, 304), value, UPB_SIZE(176, 312), 2);
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_eds_cluster_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_EdsClusterConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_EdsClusterConfig*, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_EdsClusterConfig* envoy_api_v2_Cluster_mutable_eds_cluster_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_EdsClusterConfig* sub = (struct envoy_api_v2_Cluster_EdsClusterConfig*)envoy_api_v2_Cluster_eds_cluster_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_EdsClusterConfig*)upb_msg_new(&envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_eds_cluster_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_connect_timeout(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(52, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_connect_timeout(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_connect_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_connect_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_per_connection_buffer_limit_bytes(envoy_api_v2_Cluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_mutable_per_connection_buffer_limit_bytes(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_per_connection_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_per_connection_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lb_policy(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_mutable_hosts(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_mutable_accessor(msg, UPB_SIZE(140, 248), len);
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_resize_hosts(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_resize_accessor(msg, UPB_SIZE(140, 248), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Cluster_add_hosts(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(140, 248), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck** envoy_api_v2_Cluster_mutable_health_checks(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HealthCheck**)_upb_array_mutable_accessor(msg, UPB_SIZE(144, 256), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck** envoy_api_v2_Cluster_resize_health_checks(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HealthCheck**)_upb_array_resize_accessor(msg, UPB_SIZE(144, 256), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck* envoy_api_v2_Cluster_add_health_checks(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck* sub = (struct envoy_api_v2_core_HealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(144, 256), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_max_requests_per_connection(envoy_api_v2_Cluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(60, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_mutable_max_requests_per_connection(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_max_requests_per_connection(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_max_requests_per_connection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_circuit_breakers(envoy_api_v2_Cluster *msg, struct envoy_api_v2_cluster_CircuitBreakers* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_cluster_CircuitBreakers*, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers* envoy_api_v2_Cluster_mutable_circuit_breakers(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers* sub = (struct envoy_api_v2_cluster_CircuitBreakers*)envoy_api_v2_Cluster_circuit_breakers(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_CircuitBreakers*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_circuit_breakers(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_tls_context(envoy_api_v2_Cluster *msg, struct envoy_api_v2_auth_UpstreamTlsContext* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_auth_UpstreamTlsContext*, UPB_SIZE(68, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_UpstreamTlsContext* envoy_api_v2_Cluster_mutable_tls_context(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_UpstreamTlsContext* sub = (struct envoy_api_v2_auth_UpstreamTlsContext*)envoy_api_v2_Cluster_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_UpstreamTlsContext*)upb_msg_new(&envoy_api_v2_auth_UpstreamTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Http1ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions* envoy_api_v2_Cluster_mutable_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions* sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)envoy_api_v2_Cluster_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_http2_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(76, 120)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_Cluster_mutable_http2_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_api_v2_Cluster_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_refresh_rate(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(80, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_dns_refresh_rate(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_dns_refresh_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_dns_refresh_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_lookup_family(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_mutable_dns_resolvers(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_mutable_accessor(msg, UPB_SIZE(148, 264), len);
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_resize_dns_resolvers(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_resize_accessor(msg, UPB_SIZE(148, 264), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Cluster_add_dns_resolvers(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(148, 264), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_outlier_detection(envoy_api_v2_Cluster *msg, struct envoy_api_v2_cluster_OutlierDetection* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_cluster_OutlierDetection*, UPB_SIZE(84, 136)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_OutlierDetection* envoy_api_v2_Cluster_mutable_outlier_detection(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_OutlierDetection* sub = (struct envoy_api_v2_cluster_OutlierDetection*)envoy_api_v2_Cluster_outlier_detection(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_OutlierDetection*)upb_msg_new(&envoy_api_v2_cluster_OutlierDetection_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_outlier_detection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_cleanup_interval(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(88, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_cleanup_interval(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_cleanup_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_cleanup_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_bind_config(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_BindConfig* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_BindConfig*, UPB_SIZE(92, 152)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_BindConfig* envoy_api_v2_Cluster_mutable_upstream_bind_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BindConfig* sub = (struct envoy_api_v2_core_BindConfig*)envoy_api_v2_Cluster_upstream_bind_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BindConfig*)upb_msg_new(&envoy_api_v2_core_BindConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_bind_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lb_subset_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_LbSubsetConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_LbSubsetConfig*, UPB_SIZE(96, 160)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LbSubsetConfig* envoy_api_v2_Cluster_mutable_lb_subset_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LbSubsetConfig* sub = (struct envoy_api_v2_Cluster_LbSubsetConfig*)envoy_api_v2_Cluster_lb_subset_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_LbSubsetConfig*)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_lb_subset_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_ring_hash_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_RingHashLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_RingHashLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 23);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_RingHashLbConfig* envoy_api_v2_Cluster_mutable_ring_hash_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_RingHashLbConfig* sub = (struct envoy_api_v2_Cluster_RingHashLbConfig*)envoy_api_v2_Cluster_ring_hash_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_RingHashLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_ring_hash_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_transport_socket(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(100, 168)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_mutable_transport_socket(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_Cluster_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_metadata(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(104, 176)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_Cluster_mutable_metadata(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_Cluster_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_protocol_selection(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_common_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_CommonLbConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_CommonLbConfig*, UPB_SIZE(108, 184)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig* envoy_api_v2_Cluster_mutable_common_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig*)envoy_api_v2_Cluster_common_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_common_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_alt_stat_name(envoy_api_v2_Cluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_common_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_HttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(112, 192)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpProtocolOptions* envoy_api_v2_Cluster_mutable_common_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpProtocolOptions* sub = (struct envoy_api_v2_core_HttpProtocolOptions*)envoy_api_v2_Cluster_common_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_common_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_connection_options(envoy_api_v2_Cluster *msg, envoy_api_v2_UpstreamConnectionOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_UpstreamConnectionOptions*, UPB_SIZE(116, 200)) = value;
+}
+UPB_INLINE struct envoy_api_v2_UpstreamConnectionOptions* envoy_api_v2_Cluster_mutable_upstream_connection_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_UpstreamConnectionOptions* sub = (struct envoy_api_v2_UpstreamConnectionOptions*)envoy_api_v2_Cluster_upstream_connection_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_UpstreamConnectionOptions*)upb_msg_new(&envoy_api_v2_UpstreamConnectionOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_connection_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_close_connections_on_host_health_failure(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_drain_connections_on_host_removal(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_load_assignment(envoy_api_v2_Cluster *msg, struct envoy_api_v2_ClusterLoadAssignment* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_ClusterLoadAssignment*, UPB_SIZE(120, 208)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment* envoy_api_v2_Cluster_mutable_load_assignment(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment* sub = (struct envoy_api_v2_ClusterLoadAssignment*)envoy_api_v2_Cluster_load_assignment(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ClusterLoadAssignment*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_load_assignment(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_original_dst_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_OriginalDstLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_OriginalDstLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 34);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_OriginalDstLbConfig* envoy_api_v2_Cluster_mutable_original_dst_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_OriginalDstLbConfig* sub = (struct envoy_api_v2_Cluster_OriginalDstLbConfig*)envoy_api_v2_Cluster_original_dst_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_OriginalDstLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_original_dst_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_mutable_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(152, 272), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_resize_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(152, 272), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* envoy_api_v2_Cluster_add_extension_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* sub = (struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry*)upb_msg_new(&envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(152, 272), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_mutable_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(156, 280), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_resize_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(156, 280), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* envoy_api_v2_Cluster_add_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* sub = (struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry*)upb_msg_new(&envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(156, 280), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_least_request_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_LeastRequestLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_LeastRequestLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 37);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LeastRequestLbConfig* envoy_api_v2_Cluster_mutable_least_request_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LeastRequestLbConfig* sub = (struct envoy_api_v2_Cluster_LeastRequestLbConfig*)envoy_api_v2_Cluster_least_request_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_LeastRequestLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_least_request_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_cluster_type(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_CustomClusterType* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CustomClusterType*, UPB_SIZE(168, 304), value, UPB_SIZE(176, 312), 38);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CustomClusterType* envoy_api_v2_Cluster_mutable_cluster_type(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CustomClusterType* sub = (struct envoy_api_v2_Cluster_CustomClusterType*)envoy_api_v2_Cluster_cluster_type(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CustomClusterType*)upb_msg_new(&envoy_api_v2_Cluster_CustomClusterType_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_cluster_type(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_respect_dns_ttl(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter** envoy_api_v2_Cluster_mutable_filters(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_cluster_Filter**)_upb_array_mutable_accessor(msg, UPB_SIZE(160, 288), len);
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter** envoy_api_v2_Cluster_resize_filters(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_cluster_Filter**)_upb_array_resize_accessor(msg, UPB_SIZE(160, 288), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter* envoy_api_v2_Cluster_add_filters(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_Filter* sub = (struct envoy_api_v2_cluster_Filter*)upb_msg_new(&envoy_api_v2_cluster_Filter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(160, 288), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_load_balancing_policy(envoy_api_v2_Cluster *msg, envoy_api_v2_LoadBalancingPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_LoadBalancingPolicy*, UPB_SIZE(124, 216)) = value;
+}
+UPB_INLINE struct envoy_api_v2_LoadBalancingPolicy* envoy_api_v2_Cluster_mutable_load_balancing_policy(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_LoadBalancingPolicy* sub = (struct envoy_api_v2_LoadBalancingPolicy*)envoy_api_v2_Cluster_load_balancing_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_LoadBalancingPolicy*)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_load_balancing_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lrs_server(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(128, 224)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_mutable_lrs_server(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Cluster_lrs_server(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_lrs_server(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch** envoy_api_v2_Cluster_mutable_transport_socket_matches(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch**)_upb_array_mutable_accessor(msg, UPB_SIZE(164, 296), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch** envoy_api_v2_Cluster_resize_transport_socket_matches(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch**)_upb_array_resize_accessor(msg, UPB_SIZE(164, 296), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_TransportSocketMatch* envoy_api_v2_Cluster_add_transport_socket_matches(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_TransportSocketMatch* sub = (struct envoy_api_v2_Cluster_TransportSocketMatch*)upb_msg_new(&envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(164, 296), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_failure_refresh_rate(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_RefreshRate* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_RefreshRate*, UPB_SIZE(132, 232)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_RefreshRate* envoy_api_v2_Cluster_mutable_dns_failure_refresh_rate(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_RefreshRate* sub = (struct envoy_api_v2_Cluster_RefreshRate*)envoy_api_v2_Cluster_dns_failure_refresh_rate(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_RefreshRate*)upb_msg_new(&envoy_api_v2_Cluster_RefreshRate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_dns_failure_refresh_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_use_tcp_for_dns_lookups(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_UpstreamHttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_UpstreamHttpProtocolOptions*, UPB_SIZE(136, 240)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_UpstreamHttpProtocolOptions* envoy_api_v2_Cluster_mutable_upstream_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_UpstreamHttpProtocolOptions* sub = (struct envoy_api_v2_core_UpstreamHttpProtocolOptions*)envoy_api_v2_Cluster_upstream_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_UpstreamHttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_track_timeout_budgets(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)) = value;
+}
+
+/* envoy.api.v2.Cluster.TransportSocketMatch */
+
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch *envoy_api_v2_Cluster_TransportSocketMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch *)upb_msg_new(&envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch *envoy_api_v2_Cluster_TransportSocketMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_TransportSocketMatch *ret = envoy_api_v2_Cluster_TransportSocketMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_TransportSocketMatch_serialize(const envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_TransportSocketMatch_name(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_TransportSocketMatch_match(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_TransportSocketMatch_transport_socket(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_name(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_match(envoy_api_v2_Cluster_TransportSocketMatch *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_TransportSocketMatch_mutable_match(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_TransportSocketMatch_match(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TransportSocketMatch_set_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_transport_socket(envoy_api_v2_Cluster_TransportSocketMatch *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_TransportSocketMatch_mutable_transport_socket(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_Cluster_TransportSocketMatch_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TransportSocketMatch_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.CustomClusterType */
+
+UPB_INLINE envoy_api_v2_Cluster_CustomClusterType *envoy_api_v2_Cluster_CustomClusterType_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CustomClusterType *)upb_msg_new(&envoy_api_v2_Cluster_CustomClusterType_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CustomClusterType *envoy_api_v2_Cluster_CustomClusterType_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CustomClusterType *ret = envoy_api_v2_Cluster_CustomClusterType_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CustomClusterType_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CustomClusterType_serialize(const envoy_api_v2_Cluster_CustomClusterType *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CustomClusterType_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_CustomClusterType_name(const envoy_api_v2_Cluster_CustomClusterType *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Cluster_CustomClusterType_typed_config(const envoy_api_v2_Cluster_CustomClusterType *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CustomClusterType_set_name(envoy_api_v2_Cluster_CustomClusterType *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CustomClusterType_set_typed_config(envoy_api_v2_Cluster_CustomClusterType *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Cluster_CustomClusterType_mutable_typed_config(envoy_api_v2_Cluster_CustomClusterType *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Cluster_CustomClusterType_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CustomClusterType_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.EdsClusterConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_EdsClusterConfig *envoy_api_v2_Cluster_EdsClusterConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_EdsClusterConfig *)upb_msg_new(&envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_EdsClusterConfig *envoy_api_v2_Cluster_EdsClusterConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_EdsClusterConfig *ret = envoy_api_v2_Cluster_EdsClusterConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_EdsClusterConfig_serialize(const envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_EdsClusterConfig_eds_config(const envoy_api_v2_Cluster_EdsClusterConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_Cluster_EdsClusterConfig_service_name(const envoy_api_v2_Cluster_EdsClusterConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_EdsClusterConfig_set_eds_config(envoy_api_v2_Cluster_EdsClusterConfig *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_EdsClusterConfig_mutable_eds_config(envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Cluster_EdsClusterConfig_eds_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_EdsClusterConfig_set_eds_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_EdsClusterConfig_set_service_name(envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.LbSubsetConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig *envoy_api_v2_Cluster_LbSubsetConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig *)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig *envoy_api_v2_Cluster_LbSubsetConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LbSubsetConfig *ret = envoy_api_v2_Cluster_LbSubsetConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LbSubsetConfig_serialize(const envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_Cluster_LbSubsetConfig_fallback_policy(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_LbSubsetConfig_default_subset(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 16)); }
+UPB_INLINE const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* const* envoy_api_v2_Cluster_LbSubsetConfig_subset_selectors(const envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t *len) { return (const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* const*)_upb_array_accessor(msg, UPB_SIZE(16, 24), len); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_locality_weight_aware(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_scale_locality_weight(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(9, 9)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_panic_mode_any(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(10, 10)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_list_as_any(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(11, 11)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_fallback_policy(envoy_api_v2_Cluster_LbSubsetConfig *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_default_subset(envoy_api_v2_Cluster_LbSubsetConfig *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_LbSubsetConfig_mutable_default_subset(envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_LbSubsetConfig_default_subset(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_LbSubsetConfig_set_default_subset(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector** envoy_api_v2_Cluster_LbSubsetConfig_mutable_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 24), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector** envoy_api_v2_Cluster_LbSubsetConfig_resize_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* envoy_api_v2_Cluster_LbSubsetConfig_add_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* sub = (struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector*)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_locality_weight_aware(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_scale_locality_weight(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(9, 9)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_panic_mode_any(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(10, 10)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_list_as_any(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(11, 11)) = value;
+}
+
+/* envoy.api.v2.Cluster.LbSubsetConfig.LbSubsetSelector */
+
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *ret = envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_serialize(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_keys(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 8), len); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_fallback_policy(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_fallback_keys_subset(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(12, 16), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_mutable_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 8), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_resize_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 8), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_add_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 8), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_set_fallback_policy(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_mutable_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_resize_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(12, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_add_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.Cluster.LeastRequestLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_LeastRequestLbConfig *envoy_api_v2_Cluster_LeastRequestLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LeastRequestLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LeastRequestLbConfig *envoy_api_v2_Cluster_LeastRequestLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LeastRequestLbConfig *ret = envoy_api_v2_Cluster_LeastRequestLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LeastRequestLbConfig_serialize(const envoy_api_v2_Cluster_LeastRequestLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_LeastRequestLbConfig_choice_count(const envoy_api_v2_Cluster_LeastRequestLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_LeastRequestLbConfig_set_choice_count(envoy_api_v2_Cluster_LeastRequestLbConfig *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_LeastRequestLbConfig_mutable_choice_count(envoy_api_v2_Cluster_LeastRequestLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_LeastRequestLbConfig_choice_count(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_LeastRequestLbConfig_set_choice_count(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.RingHashLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_RingHashLbConfig *envoy_api_v2_Cluster_RingHashLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_RingHashLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_RingHashLbConfig *envoy_api_v2_Cluster_RingHashLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_RingHashLbConfig *ret = envoy_api_v2_Cluster_RingHashLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_RingHashLbConfig_serialize(const envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_minimum_ring_size(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_RingHashLbConfig_hash_function(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_maximum_ring_size(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(12, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_minimum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_mutable_minimum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_RingHashLbConfig_minimum_ring_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RingHashLbConfig_set_minimum_ring_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_hash_function(envoy_api_v2_Cluster_RingHashLbConfig *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_maximum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_mutable_maximum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_RingHashLbConfig_maximum_ring_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RingHashLbConfig_set_maximum_ring_size(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.OriginalDstLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_OriginalDstLbConfig *envoy_api_v2_Cluster_OriginalDstLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_OriginalDstLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_OriginalDstLbConfig *envoy_api_v2_Cluster_OriginalDstLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_OriginalDstLbConfig *ret = envoy_api_v2_Cluster_OriginalDstLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_OriginalDstLbConfig_serialize(const envoy_api_v2_Cluster_OriginalDstLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_Cluster_OriginalDstLbConfig_use_http_header(const envoy_api_v2_Cluster_OriginalDstLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_OriginalDstLbConfig_set_use_http_header(envoy_api_v2_Cluster_OriginalDstLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig *envoy_api_v2_Cluster_CommonLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig *envoy_api_v2_Cluster_CommonLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_zone_aware_lb_config = 2,
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_locality_weighted_lb_config = 3,
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_NOT_SET = 0
+} envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_case(const envoy_api_v2_Cluster_CommonLbConfig* msg) { return (envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_healthy_panic_threshold(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_has_zone_aware_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 2); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* envoy_api_v2_Cluster_CommonLbConfig_zone_aware_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_has_locality_weighted_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* envoy_api_v2_Cluster_CommonLbConfig_locality_weighted_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_CommonLbConfig_update_merge_window(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_ignore_new_hosts_until_first_hc(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_close_connections_on_host_set_change(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_healthy_panic_threshold(envoy_api_v2_Cluster_CommonLbConfig *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_mutable_healthy_panic_threshold(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_Cluster_CommonLbConfig_healthy_panic_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_healthy_panic_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_zone_aware_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 2);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* envoy_api_v2_Cluster_CommonLbConfig_mutable_zone_aware_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*)envoy_api_v2_Cluster_CommonLbConfig_zone_aware_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_zone_aware_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_locality_weighted_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* envoy_api_v2_Cluster_CommonLbConfig_mutable_locality_weighted_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*)envoy_api_v2_Cluster_CommonLbConfig_locality_weighted_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_locality_weighted_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_update_merge_window(envoy_api_v2_Cluster_CommonLbConfig *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_CommonLbConfig_mutable_update_merge_window(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_CommonLbConfig_update_merge_window(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_update_merge_window(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_ignore_new_hosts_until_first_hc(envoy_api_v2_Cluster_CommonLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_close_connections_on_host_set_change(envoy_api_v2_Cluster_CommonLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig.ZoneAwareLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_routing_enabled(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_min_cluster_size(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_fail_traffic_on_panic(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_routing_enabled(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_mutable_routing_enabled(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_routing_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_routing_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_min_cluster_size(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_mutable_min_cluster_size(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_min_cluster_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_min_cluster_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_fail_traffic_on_panic(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig.LocalityWeightedLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.Cluster.RefreshRate */
+
+UPB_INLINE envoy_api_v2_Cluster_RefreshRate *envoy_api_v2_Cluster_RefreshRate_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_RefreshRate *)upb_msg_new(&envoy_api_v2_Cluster_RefreshRate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_RefreshRate *envoy_api_v2_Cluster_RefreshRate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_RefreshRate *ret = envoy_api_v2_Cluster_RefreshRate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_RefreshRate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_RefreshRate_serialize(const envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_RefreshRate_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_base_interval(const envoy_api_v2_Cluster_RefreshRate *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_max_interval(const envoy_api_v2_Cluster_RefreshRate *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_RefreshRate_set_base_interval(envoy_api_v2_Cluster_RefreshRate *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_mutable_base_interval(envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_RefreshRate_base_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RefreshRate_set_base_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RefreshRate_set_max_interval(envoy_api_v2_Cluster_RefreshRate *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_mutable_max_interval(envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_RefreshRate_max_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RefreshRate_set_max_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.ExtensionProtocolOptionsEntry */
+
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *)upb_msg_new(&envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *ret = envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_serialize(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_key(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_value(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_key(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_value(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_mutable_value(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.TypedExtensionProtocolOptionsEntry */
+
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *)upb_msg_new(&envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *ret = envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_serialize(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_key(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_value(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_key(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_value(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_mutable_value(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.LoadBalancingPolicy */
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy *envoy_api_v2_LoadBalancingPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy *)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy *envoy_api_v2_LoadBalancingPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LoadBalancingPolicy *ret = envoy_api_v2_LoadBalancingPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LoadBalancingPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LoadBalancingPolicy_serialize(const envoy_api_v2_LoadBalancingPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LoadBalancingPolicy_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_LoadBalancingPolicy_Policy* const* envoy_api_v2_LoadBalancingPolicy_policies(const envoy_api_v2_LoadBalancingPolicy *msg, size_t *len) { return (const envoy_api_v2_LoadBalancingPolicy_Policy* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy** envoy_api_v2_LoadBalancingPolicy_mutable_policies(envoy_api_v2_LoadBalancingPolicy *msg, size_t *len) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy** envoy_api_v2_LoadBalancingPolicy_resize_policies(envoy_api_v2_LoadBalancingPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_LoadBalancingPolicy_Policy* envoy_api_v2_LoadBalancingPolicy_add_policies(envoy_api_v2_LoadBalancingPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_LoadBalancingPolicy_Policy* sub = (struct envoy_api_v2_LoadBalancingPolicy_Policy*)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.LoadBalancingPolicy.Policy */
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy *envoy_api_v2_LoadBalancingPolicy_Policy_new(upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy *)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy *envoy_api_v2_LoadBalancingPolicy_Policy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LoadBalancingPolicy_Policy *ret = envoy_api_v2_LoadBalancingPolicy_Policy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LoadBalancingPolicy_Policy_serialize(const envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_LoadBalancingPolicy_Policy_name(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_LoadBalancingPolicy_Policy_config(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_LoadBalancingPolicy_Policy_typed_config(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_name(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_LoadBalancingPolicy_Policy_mutable_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_LoadBalancingPolicy_Policy_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_LoadBalancingPolicy_Policy_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_typed_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_LoadBalancingPolicy_Policy_mutable_typed_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_LoadBalancingPolicy_Policy_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_LoadBalancingPolicy_Policy_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.UpstreamBindConfig */
+
+UPB_INLINE envoy_api_v2_UpstreamBindConfig *envoy_api_v2_UpstreamBindConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_UpstreamBindConfig *)upb_msg_new(&envoy_api_v2_UpstreamBindConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_UpstreamBindConfig *envoy_api_v2_UpstreamBindConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_UpstreamBindConfig *ret = envoy_api_v2_UpstreamBindConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_UpstreamBindConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_UpstreamBindConfig_serialize(const envoy_api_v2_UpstreamBindConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_UpstreamBindConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_UpstreamBindConfig_source_address(const envoy_api_v2_UpstreamBindConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_UpstreamBindConfig_set_source_address(envoy_api_v2_UpstreamBindConfig *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_UpstreamBindConfig_mutable_source_address(envoy_api_v2_UpstreamBindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_UpstreamBindConfig_source_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_UpstreamBindConfig_set_source_address(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.UpstreamConnectionOptions */
+
+UPB_INLINE envoy_api_v2_UpstreamConnectionOptions *envoy_api_v2_UpstreamConnectionOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_UpstreamConnectionOptions *)upb_msg_new(&envoy_api_v2_UpstreamConnectionOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_UpstreamConnectionOptions *envoy_api_v2_UpstreamConnectionOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_UpstreamConnectionOptions *ret = envoy_api_v2_UpstreamConnectionOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_UpstreamConnectionOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_UpstreamConnectionOptions_serialize(const envoy_api_v2_UpstreamConnectionOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_UpstreamConnectionOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_TcpKeepalive* envoy_api_v2_UpstreamConnectionOptions_tcp_keepalive(const envoy_api_v2_UpstreamConnectionOptions *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TcpKeepalive*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_UpstreamConnectionOptions_set_tcp_keepalive(envoy_api_v2_UpstreamConnectionOptions *msg, struct envoy_api_v2_core_TcpKeepalive* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TcpKeepalive*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TcpKeepalive* envoy_api_v2_UpstreamConnectionOptions_mutable_tcp_keepalive(envoy_api_v2_UpstreamConnectionOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TcpKeepalive* sub = (struct envoy_api_v2_core_TcpKeepalive*)envoy_api_v2_UpstreamConnectionOptions_tcp_keepalive(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TcpKeepalive*)upb_msg_new(&envoy_api_v2_core_TcpKeepalive_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_UpstreamConnectionOptions_set_tcp_keepalive(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h
new file mode 100644
index 0000000..fee3ca8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h	
@@ -0,0 +1,242 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/circuit_breaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_CircuitBreakers;
+struct envoy_api_v2_cluster_CircuitBreakers_Thresholds;
+struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget;
+typedef struct envoy_api_v2_cluster_CircuitBreakers envoy_api_v2_cluster_CircuitBreakers;
+typedef struct envoy_api_v2_cluster_CircuitBreakers_Thresholds envoy_api_v2_cluster_CircuitBreakers_Thresholds;
+typedef struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit;
+struct envoy_type_Percent;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.cluster.CircuitBreakers */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers *envoy_api_v2_cluster_CircuitBreakers_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers *envoy_api_v2_cluster_CircuitBreakers_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers *ret = envoy_api_v2_cluster_CircuitBreakers_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_serialize(const envoy_api_v2_cluster_CircuitBreakers *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_cluster_CircuitBreakers_Thresholds* const* envoy_api_v2_cluster_CircuitBreakers_thresholds(const envoy_api_v2_cluster_CircuitBreakers *msg, size_t *len) { return (const envoy_api_v2_cluster_CircuitBreakers_Thresholds* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds** envoy_api_v2_cluster_CircuitBreakers_mutable_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, size_t *len) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds** envoy_api_v2_cluster_CircuitBreakers_resize_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers_Thresholds* envoy_api_v2_cluster_CircuitBreakers_add_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers_Thresholds* sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.cluster.CircuitBreakers.Thresholds */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds *envoy_api_v2_cluster_CircuitBreakers_Thresholds_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds *envoy_api_v2_cluster_CircuitBreakers_Thresholds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers_Thresholds *ret = envoy_api_v2_cluster_CircuitBreakers_Thresholds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_Thresholds_serialize(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_cluster_CircuitBreakers_Thresholds_priority(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connections(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_pending_requests(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_requests(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_retries(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool envoy_api_v2_cluster_CircuitBreakers_Thresholds_track_remaining(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connection_pools(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* envoy_api_v2_cluster_CircuitBreakers_Thresholds_retry_budget(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*, UPB_SIZE(32, 56)); }
+
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_priority(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connections(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_connections(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connections(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connections(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_pending_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_pending_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_pending_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_pending_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_retries(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_retries(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_retries(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_retries(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_track_remaining(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connection_pools(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_connection_pools(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connection_pools(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connection_pools(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_retry_budget(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_retry_budget(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_retry_budget(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_retry_budget(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.cluster.CircuitBreakers.Thresholds.RetryBudget */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *ret = envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_serialize(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_budget_percent(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_min_retry_concurrency(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_budget_percent(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_mutable_budget_percent(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_budget_percent(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_budget_percent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_min_retry_concurrency(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_mutable_min_retry_concurrency(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_min_retry_concurrency(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_min_retry_concurrency(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h
new file mode 100644
index 0000000..f42b8f5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h	
@@ -0,0 +1,93 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/filter.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_Filter;
+typedef struct envoy_api_v2_cluster_Filter envoy_api_v2_cluster_Filter;
+extern const upb_msglayout envoy_api_v2_cluster_Filter_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* envoy.api.v2.cluster.Filter */
+
+UPB_INLINE envoy_api_v2_cluster_Filter *envoy_api_v2_cluster_Filter_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_Filter *)upb_msg_new(&envoy_api_v2_cluster_Filter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_Filter *envoy_api_v2_cluster_Filter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_Filter *ret = envoy_api_v2_cluster_Filter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_Filter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_Filter_serialize(const envoy_api_v2_cluster_Filter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_Filter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_cluster_Filter_name(const envoy_api_v2_cluster_Filter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_cluster_Filter_typed_config(const envoy_api_v2_cluster_Filter *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_cluster_Filter_set_name(envoy_api_v2_cluster_Filter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_Filter_set_typed_config(envoy_api_v2_cluster_Filter *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_cluster_Filter_mutable_typed_config(envoy_api_v2_cluster_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_cluster_Filter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_Filter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h
new file mode 100644
index 0000000..b5f3fb8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h	
@@ -0,0 +1,329 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/outlier_detection.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_OutlierDetection;
+typedef struct envoy_api_v2_cluster_OutlierDetection envoy_api_v2_cluster_OutlierDetection;
+extern const upb_msglayout envoy_api_v2_cluster_OutlierDetection_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.cluster.OutlierDetection */
+
+UPB_INLINE envoy_api_v2_cluster_OutlierDetection *envoy_api_v2_cluster_OutlierDetection_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_OutlierDetection *)upb_msg_new(&envoy_api_v2_cluster_OutlierDetection_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_OutlierDetection *envoy_api_v2_cluster_OutlierDetection_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_OutlierDetection *ret = envoy_api_v2_cluster_OutlierDetection_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_OutlierDetection_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_OutlierDetection_serialize(const envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_OutlierDetection_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_5xx(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_interval(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_base_ejection_time(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_max_ejection_percent(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_5xx(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_success_rate(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_minimum_hosts(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_request_volume(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_stdev_factor(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_gateway_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(40, 80)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_gateway_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(44, 88)); }
+UPB_INLINE bool envoy_api_v2_cluster_OutlierDetection_split_external_local_origin_errors(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_local_origin_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(48, 96)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_local_origin_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(52, 104)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_local_origin_success_rate(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 112)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_threshold(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(60, 120)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(64, 128)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage_local_origin(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(68, 136)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_minimum_hosts(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(72, 144)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_request_volume(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(76, 152)); }
+
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_5xx(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_5xx(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_interval(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_mutable_interval(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_cluster_OutlierDetection_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_base_ejection_time(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_mutable_base_ejection_time(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_cluster_OutlierDetection_base_ejection_time(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_base_ejection_time(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_max_ejection_percent(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_max_ejection_percent(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_max_ejection_percent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_max_ejection_percent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_5xx(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_5xx(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_success_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_success_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_minimum_hosts(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_minimum_hosts(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_request_volume(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_request_volume(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_stdev_factor(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_stdev_factor(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_stdev_factor(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_stdev_factor(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(40, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_gateway_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_gateway_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(44, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_gateway_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_gateway_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_split_external_local_origin_errors(envoy_api_v2_cluster_OutlierDetection *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(48, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_local_origin_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_local_origin_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(52, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_local_origin_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_local_origin_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_local_origin_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_local_origin_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_local_origin_success_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_local_origin_success_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_threshold(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(60, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_threshold(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(64, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_failure_percentage(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage_local_origin(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(68, 136)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_failure_percentage_local_origin(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage_local_origin(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage_local_origin(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(72, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_minimum_hosts(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_minimum_hosts(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(76, 152)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_request_volume(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_request_volume(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h
new file mode 100644
index 0000000..29f180f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h	
@@ -0,0 +1,352 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/address.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_Pipe;
+struct envoy_api_v2_core_SocketAddress;
+struct envoy_api_v2_core_TcpKeepalive;
+struct envoy_api_v2_core_BindConfig;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_CidrRange;
+typedef struct envoy_api_v2_core_Pipe envoy_api_v2_core_Pipe;
+typedef struct envoy_api_v2_core_SocketAddress envoy_api_v2_core_SocketAddress;
+typedef struct envoy_api_v2_core_TcpKeepalive envoy_api_v2_core_TcpKeepalive;
+typedef struct envoy_api_v2_core_BindConfig envoy_api_v2_core_BindConfig;
+typedef struct envoy_api_v2_core_Address envoy_api_v2_core_Address;
+typedef struct envoy_api_v2_core_CidrRange envoy_api_v2_core_CidrRange;
+extern const upb_msglayout envoy_api_v2_core_Pipe_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketAddress_msginit;
+extern const upb_msglayout envoy_api_v2_core_TcpKeepalive_msginit;
+extern const upb_msglayout envoy_api_v2_core_BindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_CidrRange_msginit;
+struct envoy_api_v2_core_SocketOption;
+struct google_protobuf_BoolValue;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_SocketAddress_TCP = 0,
+  envoy_api_v2_core_SocketAddress_UDP = 1
+} envoy_api_v2_core_SocketAddress_Protocol;
+
+
+/* envoy.api.v2.core.Pipe */
+
+UPB_INLINE envoy_api_v2_core_Pipe *envoy_api_v2_core_Pipe_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Pipe *)upb_msg_new(&envoy_api_v2_core_Pipe_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Pipe *envoy_api_v2_core_Pipe_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Pipe *ret = envoy_api_v2_core_Pipe_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Pipe_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Pipe_serialize(const envoy_api_v2_core_Pipe *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Pipe_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Pipe_path(const envoy_api_v2_core_Pipe *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE uint32_t envoy_api_v2_core_Pipe_mode(const envoy_api_v2_core_Pipe *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_Pipe_set_path(envoy_api_v2_core_Pipe *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Pipe_set_mode(envoy_api_v2_core_Pipe *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.SocketAddress */
+
+UPB_INLINE envoy_api_v2_core_SocketAddress *envoy_api_v2_core_SocketAddress_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SocketAddress *)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SocketAddress *envoy_api_v2_core_SocketAddress_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SocketAddress *ret = envoy_api_v2_core_SocketAddress_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SocketAddress_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SocketAddress_serialize(const envoy_api_v2_core_SocketAddress *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SocketAddress_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_SocketAddress_port_specifier_port_value = 3,
+  envoy_api_v2_core_SocketAddress_port_specifier_named_port = 4,
+  envoy_api_v2_core_SocketAddress_port_specifier_NOT_SET = 0
+} envoy_api_v2_core_SocketAddress_port_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_SocketAddress_port_specifier_oneofcases envoy_api_v2_core_SocketAddress_port_specifier_case(const envoy_api_v2_core_SocketAddress* msg) { return (envoy_api_v2_core_SocketAddress_port_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(36, 64)); }
+
+UPB_INLINE int32_t envoy_api_v2_core_SocketAddress_protocol(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_address(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_has_port_value(const envoy_api_v2_core_SocketAddress *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 64), 3); }
+UPB_INLINE uint32_t envoy_api_v2_core_SocketAddress_port_value(const envoy_api_v2_core_SocketAddress *msg) { return UPB_READ_ONEOF(msg, uint32_t, UPB_SIZE(28, 48), UPB_SIZE(36, 64), 3, 0); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_has_named_port(const envoy_api_v2_core_SocketAddress *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 64), 4); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_named_port(const envoy_api_v2_core_SocketAddress *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 48), UPB_SIZE(36, 64), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_resolver_name(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_ipv4_compat(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_protocol(envoy_api_v2_core_SocketAddress *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_address(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_port_value(envoy_api_v2_core_SocketAddress *msg, uint32_t value) {
+  UPB_WRITE_ONEOF(msg, uint32_t, UPB_SIZE(28, 48), value, UPB_SIZE(36, 64), 3);
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_named_port(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 48), value, UPB_SIZE(36, 64), 4);
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_resolver_name(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_ipv4_compat(envoy_api_v2_core_SocketAddress *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.core.TcpKeepalive */
+
+UPB_INLINE envoy_api_v2_core_TcpKeepalive *envoy_api_v2_core_TcpKeepalive_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TcpKeepalive *)upb_msg_new(&envoy_api_v2_core_TcpKeepalive_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TcpKeepalive *envoy_api_v2_core_TcpKeepalive_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TcpKeepalive *ret = envoy_api_v2_core_TcpKeepalive_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TcpKeepalive_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TcpKeepalive_serialize(const envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TcpKeepalive_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_probes(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_time(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_interval(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_probes(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_probes(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_probes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_probes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_time(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_time(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_time(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_time(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_interval(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_interval(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.BindConfig */
+
+UPB_INLINE envoy_api_v2_core_BindConfig *envoy_api_v2_core_BindConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_core_BindConfig *)upb_msg_new(&envoy_api_v2_core_BindConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_BindConfig *envoy_api_v2_core_BindConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_BindConfig *ret = envoy_api_v2_core_BindConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_BindConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_BindConfig_serialize(const envoy_api_v2_core_BindConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_BindConfig_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_SocketAddress* envoy_api_v2_core_BindConfig_source_address(const envoy_api_v2_core_BindConfig *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_BindConfig_freebind(const envoy_api_v2_core_BindConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_SocketOption* const* envoy_api_v2_core_BindConfig_socket_options(const envoy_api_v2_core_BindConfig *msg, size_t *len) { return (const struct envoy_api_v2_core_SocketOption* const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void envoy_api_v2_core_BindConfig_set_source_address(envoy_api_v2_core_BindConfig *msg, envoy_api_v2_core_SocketAddress* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketAddress* envoy_api_v2_core_BindConfig_mutable_source_address(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketAddress* sub = (struct envoy_api_v2_core_SocketAddress*)envoy_api_v2_core_BindConfig_source_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SocketAddress*)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BindConfig_set_source_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_BindConfig_set_freebind(envoy_api_v2_core_BindConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_BindConfig_mutable_freebind(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_BindConfig_freebind(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BindConfig_set_freebind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_core_BindConfig_mutable_socket_options(envoy_api_v2_core_BindConfig *msg, size_t *len) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_core_BindConfig_resize_socket_options(envoy_api_v2_core_BindConfig *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption* envoy_api_v2_core_BindConfig_add_socket_options(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketOption* sub = (struct envoy_api_v2_core_SocketOption*)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.Address */
+
+UPB_INLINE envoy_api_v2_core_Address *envoy_api_v2_core_Address_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Address *)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Address *envoy_api_v2_core_Address_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Address *ret = envoy_api_v2_core_Address_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Address_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Address_serialize(const envoy_api_v2_core_Address *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Address_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Address_address_socket_address = 1,
+  envoy_api_v2_core_Address_address_pipe = 2,
+  envoy_api_v2_core_Address_address_NOT_SET = 0
+} envoy_api_v2_core_Address_address_oneofcases;
+UPB_INLINE envoy_api_v2_core_Address_address_oneofcases envoy_api_v2_core_Address_address_case(const envoy_api_v2_core_Address* msg) { return (envoy_api_v2_core_Address_address_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_Address_has_socket_address(const envoy_api_v2_core_Address *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_SocketAddress* envoy_api_v2_core_Address_socket_address(const envoy_api_v2_core_Address *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_Address_has_pipe(const envoy_api_v2_core_Address *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_core_Pipe* envoy_api_v2_core_Address_pipe(const envoy_api_v2_core_Address *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_Pipe*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_Address_set_socket_address(envoy_api_v2_core_Address *msg, envoy_api_v2_core_SocketAddress* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketAddress* envoy_api_v2_core_Address_mutable_socket_address(envoy_api_v2_core_Address *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketAddress* sub = (struct envoy_api_v2_core_SocketAddress*)envoy_api_v2_core_Address_socket_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SocketAddress*)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Address_set_socket_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Address_set_pipe(envoy_api_v2_core_Address *msg, envoy_api_v2_core_Pipe* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_Pipe*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_Pipe* envoy_api_v2_core_Address_mutable_pipe(envoy_api_v2_core_Address *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Pipe* sub = (struct envoy_api_v2_core_Pipe*)envoy_api_v2_core_Address_pipe(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Pipe*)upb_msg_new(&envoy_api_v2_core_Pipe_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Address_set_pipe(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.CidrRange */
+
+UPB_INLINE envoy_api_v2_core_CidrRange *envoy_api_v2_core_CidrRange_new(upb_arena *arena) {
+  return (envoy_api_v2_core_CidrRange *)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_CidrRange *envoy_api_v2_core_CidrRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_CidrRange *ret = envoy_api_v2_core_CidrRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_CidrRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_CidrRange_serialize(const envoy_api_v2_core_CidrRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_CidrRange_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_CidrRange_address_prefix(const envoy_api_v2_core_CidrRange *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_CidrRange_prefix_len(const envoy_api_v2_core_CidrRange *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_CidrRange_set_address_prefix(envoy_api_v2_core_CidrRange *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_CidrRange_set_prefix_len(envoy_api_v2_core_CidrRange *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_CidrRange_mutable_prefix_len(envoy_api_v2_core_CidrRange *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_CidrRange_prefix_len(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_CidrRange_set_prefix_len(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h
new file mode 100644
index 0000000..858e029
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h	
@@ -0,0 +1,871 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/base.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_Locality;
+struct envoy_api_v2_core_BuildVersion;
+struct envoy_api_v2_core_Extension;
+struct envoy_api_v2_core_Node;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_Metadata_FilterMetadataEntry;
+struct envoy_api_v2_core_RuntimeUInt32;
+struct envoy_api_v2_core_RuntimeFeatureFlag;
+struct envoy_api_v2_core_HeaderValue;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_core_HeaderMap;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_RemoteDataSource;
+struct envoy_api_v2_core_AsyncDataSource;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_api_v2_core_SocketOption;
+struct envoy_api_v2_core_RuntimeFractionalPercent;
+struct envoy_api_v2_core_ControlPlane;
+typedef struct envoy_api_v2_core_Locality envoy_api_v2_core_Locality;
+typedef struct envoy_api_v2_core_BuildVersion envoy_api_v2_core_BuildVersion;
+typedef struct envoy_api_v2_core_Extension envoy_api_v2_core_Extension;
+typedef struct envoy_api_v2_core_Node envoy_api_v2_core_Node;
+typedef struct envoy_api_v2_core_Metadata envoy_api_v2_core_Metadata;
+typedef struct envoy_api_v2_core_Metadata_FilterMetadataEntry envoy_api_v2_core_Metadata_FilterMetadataEntry;
+typedef struct envoy_api_v2_core_RuntimeUInt32 envoy_api_v2_core_RuntimeUInt32;
+typedef struct envoy_api_v2_core_RuntimeFeatureFlag envoy_api_v2_core_RuntimeFeatureFlag;
+typedef struct envoy_api_v2_core_HeaderValue envoy_api_v2_core_HeaderValue;
+typedef struct envoy_api_v2_core_HeaderValueOption envoy_api_v2_core_HeaderValueOption;
+typedef struct envoy_api_v2_core_HeaderMap envoy_api_v2_core_HeaderMap;
+typedef struct envoy_api_v2_core_DataSource envoy_api_v2_core_DataSource;
+typedef struct envoy_api_v2_core_RemoteDataSource envoy_api_v2_core_RemoteDataSource;
+typedef struct envoy_api_v2_core_AsyncDataSource envoy_api_v2_core_AsyncDataSource;
+typedef struct envoy_api_v2_core_TransportSocket envoy_api_v2_core_TransportSocket;
+typedef struct envoy_api_v2_core_SocketOption envoy_api_v2_core_SocketOption;
+typedef struct envoy_api_v2_core_RuntimeFractionalPercent envoy_api_v2_core_RuntimeFractionalPercent;
+typedef struct envoy_api_v2_core_ControlPlane envoy_api_v2_core_ControlPlane;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout envoy_api_v2_core_BuildVersion_msginit;
+extern const upb_msglayout envoy_api_v2_core_Extension_msginit;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeUInt32_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFeatureFlag_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValue_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderMap_msginit;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_RemoteDataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_AsyncDataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFractionalPercent_msginit;
+extern const upb_msglayout envoy_api_v2_core_ControlPlane_msginit;
+struct envoy_api_v2_core_HttpUri;
+struct envoy_type_FractionalPercent;
+struct envoy_type_SemanticVersion;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_HttpUri_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout envoy_type_SemanticVersion_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+typedef enum {
+  envoy_api_v2_core_METHOD_UNSPECIFIED = 0,
+  envoy_api_v2_core_GET = 1,
+  envoy_api_v2_core_HEAD = 2,
+  envoy_api_v2_core_POST = 3,
+  envoy_api_v2_core_PUT = 4,
+  envoy_api_v2_core_DELETE = 5,
+  envoy_api_v2_core_CONNECT = 6,
+  envoy_api_v2_core_OPTIONS = 7,
+  envoy_api_v2_core_TRACE = 8,
+  envoy_api_v2_core_PATCH = 9
+} envoy_api_v2_core_RequestMethod;
+
+typedef enum {
+  envoy_api_v2_core_DEFAULT = 0,
+  envoy_api_v2_core_HIGH = 1
+} envoy_api_v2_core_RoutingPriority;
+
+typedef enum {
+  envoy_api_v2_core_SocketOption_STATE_PREBIND = 0,
+  envoy_api_v2_core_SocketOption_STATE_BOUND = 1,
+  envoy_api_v2_core_SocketOption_STATE_LISTENING = 2
+} envoy_api_v2_core_SocketOption_SocketState;
+
+typedef enum {
+  envoy_api_v2_core_UNSPECIFIED = 0,
+  envoy_api_v2_core_INBOUND = 1,
+  envoy_api_v2_core_OUTBOUND = 2
+} envoy_api_v2_core_TrafficDirection;
+
+
+/* envoy.api.v2.core.Locality */
+
+UPB_INLINE envoy_api_v2_core_Locality *envoy_api_v2_core_Locality_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Locality *)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Locality *envoy_api_v2_core_Locality_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Locality *ret = envoy_api_v2_core_Locality_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Locality_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Locality_serialize(const envoy_api_v2_core_Locality *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Locality_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_region(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_zone(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_sub_zone(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_core_Locality_set_region(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Locality_set_zone(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Locality_set_sub_zone(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+
+/* envoy.api.v2.core.BuildVersion */
+
+UPB_INLINE envoy_api_v2_core_BuildVersion *envoy_api_v2_core_BuildVersion_new(upb_arena *arena) {
+  return (envoy_api_v2_core_BuildVersion *)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_BuildVersion *envoy_api_v2_core_BuildVersion_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_BuildVersion *ret = envoy_api_v2_core_BuildVersion_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_BuildVersion_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_BuildVersion_serialize(const envoy_api_v2_core_BuildVersion *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_BuildVersion_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_SemanticVersion* envoy_api_v2_core_BuildVersion_version(const envoy_api_v2_core_BuildVersion *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_SemanticVersion*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_BuildVersion_metadata(const envoy_api_v2_core_BuildVersion *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_BuildVersion_set_version(envoy_api_v2_core_BuildVersion *msg, struct envoy_type_SemanticVersion* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_SemanticVersion*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_SemanticVersion* envoy_api_v2_core_BuildVersion_mutable_version(envoy_api_v2_core_BuildVersion *msg, upb_arena *arena) {
+  struct envoy_type_SemanticVersion* sub = (struct envoy_type_SemanticVersion*)envoy_api_v2_core_BuildVersion_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_SemanticVersion*)upb_msg_new(&envoy_type_SemanticVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BuildVersion_set_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_BuildVersion_set_metadata(envoy_api_v2_core_BuildVersion *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_BuildVersion_mutable_metadata(envoy_api_v2_core_BuildVersion *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_BuildVersion_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BuildVersion_set_metadata(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Extension */
+
+UPB_INLINE envoy_api_v2_core_Extension *envoy_api_v2_core_Extension_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Extension *)upb_msg_new(&envoy_api_v2_core_Extension_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Extension *envoy_api_v2_core_Extension_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Extension *ret = envoy_api_v2_core_Extension_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Extension_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Extension_serialize(const envoy_api_v2_core_Extension *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Extension_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_name(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_category(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_type_descriptor(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE const envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Extension_version(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_BuildVersion*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool envoy_api_v2_core_Extension_disabled(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_Extension_set_name(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_category(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_type_descriptor(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_version(envoy_api_v2_core_Extension *msg, envoy_api_v2_core_BuildVersion* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_BuildVersion*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Extension_mutable_version(envoy_api_v2_core_Extension *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BuildVersion* sub = (struct envoy_api_v2_core_BuildVersion*)envoy_api_v2_core_Extension_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BuildVersion*)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Extension_set_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_disabled(envoy_api_v2_core_Extension *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.Node */
+
+UPB_INLINE envoy_api_v2_core_Node *envoy_api_v2_core_Node_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Node *)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Node *envoy_api_v2_core_Node_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Node *ret = envoy_api_v2_core_Node_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Node_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Node_serialize(const envoy_api_v2_core_Node *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Node_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Node_user_agent_version_type_user_agent_version = 7,
+  envoy_api_v2_core_Node_user_agent_version_type_user_agent_build_version = 8,
+  envoy_api_v2_core_Node_user_agent_version_type_NOT_SET = 0
+} envoy_api_v2_core_Node_user_agent_version_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_Node_user_agent_version_type_oneofcases envoy_api_v2_core_Node_user_agent_version_type_case(const envoy_api_v2_core_Node* msg) { return (envoy_api_v2_core_Node_user_agent_version_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_Node_id(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_cluster(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_Node_metadata(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(32, 64)); }
+UPB_INLINE const envoy_api_v2_core_Locality* envoy_api_v2_core_Node_locality(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Locality*, UPB_SIZE(36, 72)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_build_version(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_user_agent_name(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE bool envoy_api_v2_core_Node_has_user_agent_version(const envoy_api_v2_core_Node *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_user_agent_version(const envoy_api_v2_core_Node *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(48, 96), UPB_SIZE(56, 112), 7, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_Node_has_user_agent_build_version(const envoy_api_v2_core_Node *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 8); }
+UPB_INLINE const envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Node_user_agent_build_version(const envoy_api_v2_core_Node *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_BuildVersion*, UPB_SIZE(48, 96), UPB_SIZE(56, 112), 8, NULL); }
+UPB_INLINE const envoy_api_v2_core_Extension* const* envoy_api_v2_core_Node_extensions(const envoy_api_v2_core_Node *msg, size_t *len) { return (const envoy_api_v2_core_Extension* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_Node_client_features(const envoy_api_v2_core_Node *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+
+UPB_INLINE void envoy_api_v2_core_Node_set_id(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_cluster(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_metadata(envoy_api_v2_core_Node *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_Node_mutable_metadata(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_Node_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_locality(envoy_api_v2_core_Node *msg, envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Locality*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_core_Node_mutable_locality(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_core_Node_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_build_version(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_name(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_version(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(48, 96), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_build_version(envoy_api_v2_core_Node *msg, envoy_api_v2_core_BuildVersion* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_BuildVersion*, UPB_SIZE(48, 96), value, UPB_SIZE(56, 112), 8);
+}
+UPB_INLINE struct envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Node_mutable_user_agent_build_version(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BuildVersion* sub = (struct envoy_api_v2_core_BuildVersion*)envoy_api_v2_core_Node_user_agent_build_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BuildVersion*)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_user_agent_build_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_Extension** envoy_api_v2_core_Node_mutable_extensions(envoy_api_v2_core_Node *msg, size_t *len) {
+  return (envoy_api_v2_core_Extension**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE envoy_api_v2_core_Extension** envoy_api_v2_core_Node_resize_extensions(envoy_api_v2_core_Node *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_Extension**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Extension* envoy_api_v2_core_Node_add_extensions(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Extension* sub = (struct envoy_api_v2_core_Extension*)upb_msg_new(&envoy_api_v2_core_Extension_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_Node_mutable_client_features(envoy_api_v2_core_Node *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_Node_resize_client_features(envoy_api_v2_core_Node *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_Node_add_client_features(envoy_api_v2_core_Node *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.core.Metadata */
+
+UPB_INLINE envoy_api_v2_core_Metadata *envoy_api_v2_core_Metadata_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata *)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Metadata *envoy_api_v2_core_Metadata_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Metadata *ret = envoy_api_v2_core_Metadata_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Metadata_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Metadata_serialize(const envoy_api_v2_core_Metadata *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Metadata_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_Metadata_FilterMetadataEntry* const* envoy_api_v2_core_Metadata_filter_metadata(const envoy_api_v2_core_Metadata *msg, size_t *len) { return (const envoy_api_v2_core_Metadata_FilterMetadataEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry** envoy_api_v2_core_Metadata_mutable_filter_metadata(envoy_api_v2_core_Metadata *msg, size_t *len) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry** envoy_api_v2_core_Metadata_resize_filter_metadata(envoy_api_v2_core_Metadata *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata_FilterMetadataEntry* envoy_api_v2_core_Metadata_add_filter_metadata(envoy_api_v2_core_Metadata *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata_FilterMetadataEntry* sub = (struct envoy_api_v2_core_Metadata_FilterMetadataEntry*)upb_msg_new(&envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.Metadata.FilterMetadataEntry */
+
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry *envoy_api_v2_core_Metadata_FilterMetadataEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry *)upb_msg_new(&envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry *envoy_api_v2_core_Metadata_FilterMetadataEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Metadata_FilterMetadataEntry *ret = envoy_api_v2_core_Metadata_FilterMetadataEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Metadata_FilterMetadataEntry_serialize(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Metadata_FilterMetadataEntry_key(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_Metadata_FilterMetadataEntry_value(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_Metadata_FilterMetadataEntry_set_key(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Metadata_FilterMetadataEntry_set_value(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_Metadata_FilterMetadataEntry_mutable_value(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_Metadata_FilterMetadataEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Metadata_FilterMetadataEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.RuntimeUInt32 */
+
+UPB_INLINE envoy_api_v2_core_RuntimeUInt32 *envoy_api_v2_core_RuntimeUInt32_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeUInt32 *)upb_msg_new(&envoy_api_v2_core_RuntimeUInt32_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeUInt32 *envoy_api_v2_core_RuntimeUInt32_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeUInt32 *ret = envoy_api_v2_core_RuntimeUInt32_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeUInt32_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeUInt32_serialize(const envoy_api_v2_core_RuntimeUInt32 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeUInt32_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_core_RuntimeUInt32_default_value(const envoy_api_v2_core_RuntimeUInt32 *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeUInt32_runtime_key(const envoy_api_v2_core_RuntimeUInt32 *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeUInt32_set_default_value(envoy_api_v2_core_RuntimeUInt32 *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeUInt32_set_runtime_key(envoy_api_v2_core_RuntimeUInt32 *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+
+/* envoy.api.v2.core.RuntimeFeatureFlag */
+
+UPB_INLINE envoy_api_v2_core_RuntimeFeatureFlag *envoy_api_v2_core_RuntimeFeatureFlag_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeFeatureFlag *)upb_msg_new(&envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeFeatureFlag *envoy_api_v2_core_RuntimeFeatureFlag_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeFeatureFlag *ret = envoy_api_v2_core_RuntimeFeatureFlag_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeFeatureFlag_serialize(const envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_RuntimeFeatureFlag_default_value(const envoy_api_v2_core_RuntimeFeatureFlag *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeFeatureFlag_runtime_key(const envoy_api_v2_core_RuntimeFeatureFlag *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeFeatureFlag_set_default_value(envoy_api_v2_core_RuntimeFeatureFlag *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_RuntimeFeatureFlag_mutable_default_value(envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_RuntimeFeatureFlag_default_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RuntimeFeatureFlag_set_default_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeFeatureFlag_set_runtime_key(envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.HeaderValue */
+
+UPB_INLINE envoy_api_v2_core_HeaderValue *envoy_api_v2_core_HeaderValue_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValue *)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValue *envoy_api_v2_core_HeaderValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderValue *ret = envoy_api_v2_core_HeaderValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderValue_serialize(const envoy_api_v2_core_HeaderValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HeaderValue_key(const envoy_api_v2_core_HeaderValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HeaderValue_value(const envoy_api_v2_core_HeaderValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HeaderValue_set_key(envoy_api_v2_core_HeaderValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HeaderValue_set_value(envoy_api_v2_core_HeaderValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.HeaderValueOption */
+
+UPB_INLINE envoy_api_v2_core_HeaderValueOption *envoy_api_v2_core_HeaderValueOption_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValueOption *)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValueOption *envoy_api_v2_core_HeaderValueOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderValueOption *ret = envoy_api_v2_core_HeaderValueOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderValueOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderValueOption_serialize(const envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderValueOption_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderValueOption_header(const envoy_api_v2_core_HeaderValueOption *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HeaderValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_HeaderValueOption_append(const envoy_api_v2_core_HeaderValueOption *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_HeaderValueOption_set_header(envoy_api_v2_core_HeaderValueOption *msg, envoy_api_v2_core_HeaderValue* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HeaderValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderValueOption_mutable_header(envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)envoy_api_v2_core_HeaderValueOption_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HeaderValueOption_set_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HeaderValueOption_set_append(envoy_api_v2_core_HeaderValueOption *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_HeaderValueOption_mutable_append(envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_HeaderValueOption_append(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HeaderValueOption_set_append(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HeaderMap */
+
+UPB_INLINE envoy_api_v2_core_HeaderMap *envoy_api_v2_core_HeaderMap_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderMap *)upb_msg_new(&envoy_api_v2_core_HeaderMap_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderMap *envoy_api_v2_core_HeaderMap_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderMap *ret = envoy_api_v2_core_HeaderMap_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderMap_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderMap_serialize(const envoy_api_v2_core_HeaderMap *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderMap_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HeaderValue* const* envoy_api_v2_core_HeaderMap_headers(const envoy_api_v2_core_HeaderMap *msg, size_t *len) { return (const envoy_api_v2_core_HeaderValue* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_core_HeaderValue** envoy_api_v2_core_HeaderMap_mutable_headers(envoy_api_v2_core_HeaderMap *msg, size_t *len) {
+  return (envoy_api_v2_core_HeaderValue**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValue** envoy_api_v2_core_HeaderMap_resize_headers(envoy_api_v2_core_HeaderMap *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValue**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderMap_add_headers(envoy_api_v2_core_HeaderMap *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.DataSource */
+
+UPB_INLINE envoy_api_v2_core_DataSource *envoy_api_v2_core_DataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_DataSource *)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_DataSource *envoy_api_v2_core_DataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_DataSource *ret = envoy_api_v2_core_DataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_DataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_DataSource_serialize(const envoy_api_v2_core_DataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_DataSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_DataSource_specifier_filename = 1,
+  envoy_api_v2_core_DataSource_specifier_inline_bytes = 2,
+  envoy_api_v2_core_DataSource_specifier_inline_string = 3,
+  envoy_api_v2_core_DataSource_specifier_NOT_SET = 0
+} envoy_api_v2_core_DataSource_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_DataSource_specifier_oneofcases envoy_api_v2_core_DataSource_specifier_case(const envoy_api_v2_core_DataSource* msg) { return (envoy_api_v2_core_DataSource_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_filename(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_filename(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_inline_bytes(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_inline_bytes(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_inline_string(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_inline_string(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_core_DataSource_set_filename(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_DataSource_set_inline_bytes(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE void envoy_api_v2_core_DataSource_set_inline_string(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+
+/* envoy.api.v2.core.RemoteDataSource */
+
+UPB_INLINE envoy_api_v2_core_RemoteDataSource *envoy_api_v2_core_RemoteDataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RemoteDataSource *)upb_msg_new(&envoy_api_v2_core_RemoteDataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RemoteDataSource *envoy_api_v2_core_RemoteDataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RemoteDataSource *ret = envoy_api_v2_core_RemoteDataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RemoteDataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RemoteDataSource_serialize(const envoy_api_v2_core_RemoteDataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RemoteDataSource_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_HttpUri* envoy_api_v2_core_RemoteDataSource_http_uri(const envoy_api_v2_core_RemoteDataSource *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpUri*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RemoteDataSource_sha256(const envoy_api_v2_core_RemoteDataSource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RemoteDataSource_set_http_uri(envoy_api_v2_core_RemoteDataSource *msg, struct envoy_api_v2_core_HttpUri* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpUri*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpUri* envoy_api_v2_core_RemoteDataSource_mutable_http_uri(envoy_api_v2_core_RemoteDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpUri* sub = (struct envoy_api_v2_core_HttpUri*)envoy_api_v2_core_RemoteDataSource_http_uri(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpUri*)upb_msg_new(&envoy_api_v2_core_HttpUri_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RemoteDataSource_set_http_uri(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RemoteDataSource_set_sha256(envoy_api_v2_core_RemoteDataSource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.AsyncDataSource */
+
+UPB_INLINE envoy_api_v2_core_AsyncDataSource *envoy_api_v2_core_AsyncDataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_AsyncDataSource *)upb_msg_new(&envoy_api_v2_core_AsyncDataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_AsyncDataSource *envoy_api_v2_core_AsyncDataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_AsyncDataSource *ret = envoy_api_v2_core_AsyncDataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_AsyncDataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_AsyncDataSource_serialize(const envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_AsyncDataSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_AsyncDataSource_specifier_local = 1,
+  envoy_api_v2_core_AsyncDataSource_specifier_remote = 2,
+  envoy_api_v2_core_AsyncDataSource_specifier_NOT_SET = 0
+} envoy_api_v2_core_AsyncDataSource_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_AsyncDataSource_specifier_oneofcases envoy_api_v2_core_AsyncDataSource_specifier_case(const envoy_api_v2_core_AsyncDataSource* msg) { return (envoy_api_v2_core_AsyncDataSource_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_AsyncDataSource_has_local(const envoy_api_v2_core_AsyncDataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_DataSource* envoy_api_v2_core_AsyncDataSource_local(const envoy_api_v2_core_AsyncDataSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_AsyncDataSource_has_remote(const envoy_api_v2_core_AsyncDataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_core_RemoteDataSource* envoy_api_v2_core_AsyncDataSource_remote(const envoy_api_v2_core_AsyncDataSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_RemoteDataSource*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_AsyncDataSource_set_local(envoy_api_v2_core_AsyncDataSource *msg, envoy_api_v2_core_DataSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_AsyncDataSource_mutable_local(envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_AsyncDataSource_local(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_AsyncDataSource_set_local(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_AsyncDataSource_set_remote(envoy_api_v2_core_AsyncDataSource *msg, envoy_api_v2_core_RemoteDataSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_RemoteDataSource*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_RemoteDataSource* envoy_api_v2_core_AsyncDataSource_mutable_remote(envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RemoteDataSource* sub = (struct envoy_api_v2_core_RemoteDataSource*)envoy_api_v2_core_AsyncDataSource_remote(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RemoteDataSource*)upb_msg_new(&envoy_api_v2_core_RemoteDataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_AsyncDataSource_set_remote(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.TransportSocket */
+
+UPB_INLINE envoy_api_v2_core_TransportSocket *envoy_api_v2_core_TransportSocket_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TransportSocket *)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TransportSocket *envoy_api_v2_core_TransportSocket_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TransportSocket *ret = envoy_api_v2_core_TransportSocket_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TransportSocket_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TransportSocket_serialize(const envoy_api_v2_core_TransportSocket *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TransportSocket_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_TransportSocket_config_type_config = 2,
+  envoy_api_v2_core_TransportSocket_config_type_typed_config = 3,
+  envoy_api_v2_core_TransportSocket_config_type_NOT_SET = 0
+} envoy_api_v2_core_TransportSocket_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_TransportSocket_config_type_oneofcases envoy_api_v2_core_TransportSocket_config_type_case(const envoy_api_v2_core_TransportSocket* msg) { return (envoy_api_v2_core_TransportSocket_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_TransportSocket_name(const envoy_api_v2_core_TransportSocket *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_TransportSocket_has_config(const envoy_api_v2_core_TransportSocket *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_TransportSocket_config(const envoy_api_v2_core_TransportSocket *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_TransportSocket_has_typed_config(const envoy_api_v2_core_TransportSocket *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_TransportSocket_typed_config(const envoy_api_v2_core_TransportSocket *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_name(envoy_api_v2_core_TransportSocket *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_config(envoy_api_v2_core_TransportSocket *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_TransportSocket_mutable_config(envoy_api_v2_core_TransportSocket *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_TransportSocket_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TransportSocket_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_typed_config(envoy_api_v2_core_TransportSocket *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_TransportSocket_mutable_typed_config(envoy_api_v2_core_TransportSocket *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_TransportSocket_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TransportSocket_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.SocketOption */
+
+UPB_INLINE envoy_api_v2_core_SocketOption *envoy_api_v2_core_SocketOption_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SocketOption *)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SocketOption *envoy_api_v2_core_SocketOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SocketOption *ret = envoy_api_v2_core_SocketOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SocketOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SocketOption_serialize(const envoy_api_v2_core_SocketOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SocketOption_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_SocketOption_value_int_value = 4,
+  envoy_api_v2_core_SocketOption_value_buf_value = 5,
+  envoy_api_v2_core_SocketOption_value_NOT_SET = 0
+} envoy_api_v2_core_SocketOption_value_oneofcases;
+UPB_INLINE envoy_api_v2_core_SocketOption_value_oneofcases envoy_api_v2_core_SocketOption_value_case(const envoy_api_v2_core_SocketOption* msg) { return (envoy_api_v2_core_SocketOption_value_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(40, 56)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_SocketOption_description(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_level(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_name(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_core_SocketOption_has_int_value(const envoy_api_v2_core_SocketOption *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(40, 56), 4); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_int_value(const envoy_api_v2_core_SocketOption *msg) { return UPB_READ_ONEOF(msg, int64_t, UPB_SIZE(32, 40), UPB_SIZE(40, 56), 4, 0); }
+UPB_INLINE bool envoy_api_v2_core_SocketOption_has_buf_value(const envoy_api_v2_core_SocketOption *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(40, 56), 5); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketOption_buf_value(const envoy_api_v2_core_SocketOption *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(32, 40), UPB_SIZE(40, 56), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE int32_t envoy_api_v2_core_SocketOption_state(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_description(envoy_api_v2_core_SocketOption *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_level(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_name(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_int_value(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_WRITE_ONEOF(msg, int64_t, UPB_SIZE(32, 40), value, UPB_SIZE(40, 56), 4);
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_buf_value(envoy_api_v2_core_SocketOption *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(32, 40), value, UPB_SIZE(40, 56), 5);
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_state(envoy_api_v2_core_SocketOption *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+
+/* envoy.api.v2.core.RuntimeFractionalPercent */
+
+UPB_INLINE envoy_api_v2_core_RuntimeFractionalPercent *envoy_api_v2_core_RuntimeFractionalPercent_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeFractionalPercent *)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeFractionalPercent *envoy_api_v2_core_RuntimeFractionalPercent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeFractionalPercent *ret = envoy_api_v2_core_RuntimeFractionalPercent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeFractionalPercent_serialize(const envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_core_RuntimeFractionalPercent_default_value(const envoy_api_v2_core_RuntimeFractionalPercent *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeFractionalPercent_runtime_key(const envoy_api_v2_core_RuntimeFractionalPercent *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeFractionalPercent_set_default_value(envoy_api_v2_core_RuntimeFractionalPercent *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_core_RuntimeFractionalPercent_mutable_default_value(envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_core_RuntimeFractionalPercent_default_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RuntimeFractionalPercent_set_default_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeFractionalPercent_set_runtime_key(envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.ControlPlane */
+
+UPB_INLINE envoy_api_v2_core_ControlPlane *envoy_api_v2_core_ControlPlane_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ControlPlane *)upb_msg_new(&envoy_api_v2_core_ControlPlane_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ControlPlane *envoy_api_v2_core_ControlPlane_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ControlPlane *ret = envoy_api_v2_core_ControlPlane_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ControlPlane_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ControlPlane_serialize(const envoy_api_v2_core_ControlPlane *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ControlPlane_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_ControlPlane_identifier(const envoy_api_v2_core_ControlPlane *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_ControlPlane_set_identifier(envoy_api_v2_core_ControlPlane *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h
new file mode 100644
index 0000000..89b4b9a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h	
@@ -0,0 +1,346 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/config_source.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_ApiConfigSource;
+struct envoy_api_v2_core_AggregatedConfigSource;
+struct envoy_api_v2_core_SelfConfigSource;
+struct envoy_api_v2_core_RateLimitSettings;
+struct envoy_api_v2_core_ConfigSource;
+typedef struct envoy_api_v2_core_ApiConfigSource envoy_api_v2_core_ApiConfigSource;
+typedef struct envoy_api_v2_core_AggregatedConfigSource envoy_api_v2_core_AggregatedConfigSource;
+typedef struct envoy_api_v2_core_SelfConfigSource envoy_api_v2_core_SelfConfigSource;
+typedef struct envoy_api_v2_core_RateLimitSettings envoy_api_v2_core_RateLimitSettings;
+typedef struct envoy_api_v2_core_ConfigSource envoy_api_v2_core_ConfigSource;
+extern const upb_msglayout envoy_api_v2_core_ApiConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_AggregatedConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_SelfConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_RateLimitSettings_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+struct envoy_api_v2_core_GrpcService;
+struct google_protobuf_DoubleValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_msginit;
+extern const upb_msglayout google_protobuf_DoubleValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_ApiConfigSource_UNSUPPORTED_REST_LEGACY = 0,
+  envoy_api_v2_core_ApiConfigSource_REST = 1,
+  envoy_api_v2_core_ApiConfigSource_GRPC = 2,
+  envoy_api_v2_core_ApiConfigSource_DELTA_GRPC = 3
+} envoy_api_v2_core_ApiConfigSource_ApiType;
+
+typedef enum {
+  envoy_api_v2_core_AUTO = 0,
+  envoy_api_v2_core_V2 = 1,
+  envoy_api_v2_core_V3 = 2
+} envoy_api_v2_core_ApiVersion;
+
+
+/* envoy.api.v2.core.ApiConfigSource */
+
+UPB_INLINE envoy_api_v2_core_ApiConfigSource *envoy_api_v2_core_ApiConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ApiConfigSource *)upb_msg_new(&envoy_api_v2_core_ApiConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ApiConfigSource *envoy_api_v2_core_ApiConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ApiConfigSource *ret = envoy_api_v2_core_ApiConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ApiConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ApiConfigSource_serialize(const envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ApiConfigSource_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_core_ApiConfigSource_api_type(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_ApiConfigSource_cluster_names(const envoy_api_v2_core_ApiConfigSource *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 48), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_refresh_delay(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_GrpcService* const* envoy_api_v2_core_ApiConfigSource_grpc_services(const envoy_api_v2_core_ApiConfigSource *msg, size_t *len) { return (const struct envoy_api_v2_core_GrpcService* const*)_upb_array_accessor(msg, UPB_SIZE(36, 56), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_request_timeout(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 32)); }
+UPB_INLINE const envoy_api_v2_core_RateLimitSettings* envoy_api_v2_core_ApiConfigSource_rate_limit_settings(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_RateLimitSettings*, UPB_SIZE(28, 40)); }
+UPB_INLINE bool envoy_api_v2_core_ApiConfigSource_set_node_on_first_message_only(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE int32_t envoy_api_v2_core_ApiConfigSource_transport_api_version(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_api_type(envoy_api_v2_core_ApiConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_ApiConfigSource_mutable_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_ApiConfigSource_resize_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_ApiConfigSource_add_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_refresh_delay(envoy_api_v2_core_ApiConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_mutable_refresh_delay(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ApiConfigSource_refresh_delay(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_refresh_delay(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService** envoy_api_v2_core_ApiConfigSource_mutable_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, size_t *len) {
+  return (struct envoy_api_v2_core_GrpcService**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService** envoy_api_v2_core_ApiConfigSource_resize_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_GrpcService**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService* envoy_api_v2_core_ApiConfigSource_add_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService* sub = (struct envoy_api_v2_core_GrpcService*)upb_msg_new(&envoy_api_v2_core_GrpcService_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_request_timeout(envoy_api_v2_core_ApiConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_mutable_request_timeout(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ApiConfigSource_request_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_request_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_rate_limit_settings(envoy_api_v2_core_ApiConfigSource *msg, envoy_api_v2_core_RateLimitSettings* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_RateLimitSettings*, UPB_SIZE(28, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RateLimitSettings* envoy_api_v2_core_ApiConfigSource_mutable_rate_limit_settings(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RateLimitSettings* sub = (struct envoy_api_v2_core_RateLimitSettings*)envoy_api_v2_core_ApiConfigSource_rate_limit_settings(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RateLimitSettings*)upb_msg_new(&envoy_api_v2_core_RateLimitSettings_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_rate_limit_settings(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_set_node_on_first_message_only(envoy_api_v2_core_ApiConfigSource *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_transport_api_version(envoy_api_v2_core_ApiConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.core.AggregatedConfigSource */
+
+UPB_INLINE envoy_api_v2_core_AggregatedConfigSource *envoy_api_v2_core_AggregatedConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_AggregatedConfigSource *)upb_msg_new(&envoy_api_v2_core_AggregatedConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_AggregatedConfigSource *envoy_api_v2_core_AggregatedConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_AggregatedConfigSource *ret = envoy_api_v2_core_AggregatedConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_AggregatedConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_AggregatedConfigSource_serialize(const envoy_api_v2_core_AggregatedConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_AggregatedConfigSource_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.SelfConfigSource */
+
+UPB_INLINE envoy_api_v2_core_SelfConfigSource *envoy_api_v2_core_SelfConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SelfConfigSource *)upb_msg_new(&envoy_api_v2_core_SelfConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SelfConfigSource *envoy_api_v2_core_SelfConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SelfConfigSource *ret = envoy_api_v2_core_SelfConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SelfConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SelfConfigSource_serialize(const envoy_api_v2_core_SelfConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SelfConfigSource_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.RateLimitSettings */
+
+UPB_INLINE envoy_api_v2_core_RateLimitSettings *envoy_api_v2_core_RateLimitSettings_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RateLimitSettings *)upb_msg_new(&envoy_api_v2_core_RateLimitSettings_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RateLimitSettings *envoy_api_v2_core_RateLimitSettings_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RateLimitSettings *ret = envoy_api_v2_core_RateLimitSettings_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RateLimitSettings_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RateLimitSettings_serialize(const envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RateLimitSettings_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_RateLimitSettings_max_tokens(const envoy_api_v2_core_RateLimitSettings *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_DoubleValue* envoy_api_v2_core_RateLimitSettings_fill_rate(const envoy_api_v2_core_RateLimitSettings *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_DoubleValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_RateLimitSettings_set_max_tokens(envoy_api_v2_core_RateLimitSettings *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_RateLimitSettings_mutable_max_tokens(envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_RateLimitSettings_max_tokens(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RateLimitSettings_set_max_tokens(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RateLimitSettings_set_fill_rate(envoy_api_v2_core_RateLimitSettings *msg, struct google_protobuf_DoubleValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_DoubleValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_DoubleValue* envoy_api_v2_core_RateLimitSettings_mutable_fill_rate(envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena) {
+  struct google_protobuf_DoubleValue* sub = (struct google_protobuf_DoubleValue*)envoy_api_v2_core_RateLimitSettings_fill_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_DoubleValue*)upb_msg_new(&google_protobuf_DoubleValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RateLimitSettings_set_fill_rate(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.ConfigSource */
+
+UPB_INLINE envoy_api_v2_core_ConfigSource *envoy_api_v2_core_ConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ConfigSource *)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ConfigSource *envoy_api_v2_core_ConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ConfigSource *ret = envoy_api_v2_core_ConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ConfigSource_serialize(const envoy_api_v2_core_ConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ConfigSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_ConfigSource_config_source_specifier_path = 1,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_api_config_source = 2,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_ads = 3,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_self = 5,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_NOT_SET = 0
+} envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases envoy_api_v2_core_ConfigSource_config_source_specifier_case(const envoy_api_v2_core_ConfigSource* msg) { return (envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 32)); }
+
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_path(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_ConfigSource_path(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_api_config_source(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 2); }
+UPB_INLINE const envoy_api_v2_core_ApiConfigSource* envoy_api_v2_core_ConfigSource_api_config_source(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_ApiConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_ads(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 3); }
+UPB_INLINE const envoy_api_v2_core_AggregatedConfigSource* envoy_api_v2_core_ConfigSource_ads(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_AggregatedConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 3, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ConfigSource_initial_fetch_timeout(const envoy_api_v2_core_ConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_self(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 5); }
+UPB_INLINE const envoy_api_v2_core_SelfConfigSource* envoy_api_v2_core_ConfigSource_self(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_SelfConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 5, NULL); }
+UPB_INLINE int32_t envoy_api_v2_core_ConfigSource_resource_api_version(const envoy_api_v2_core_ConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_path(envoy_api_v2_core_ConfigSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 1);
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_api_config_source(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_ApiConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_ApiConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_ApiConfigSource* envoy_api_v2_core_ConfigSource_mutable_api_config_source(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ApiConfigSource* sub = (struct envoy_api_v2_core_ApiConfigSource*)envoy_api_v2_core_ConfigSource_api_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ApiConfigSource*)upb_msg_new(&envoy_api_v2_core_ApiConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_api_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_ads(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_AggregatedConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_AggregatedConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 3);
+}
+UPB_INLINE struct envoy_api_v2_core_AggregatedConfigSource* envoy_api_v2_core_ConfigSource_mutable_ads(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_AggregatedConfigSource* sub = (struct envoy_api_v2_core_AggregatedConfigSource*)envoy_api_v2_core_ConfigSource_ads(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_AggregatedConfigSource*)upb_msg_new(&envoy_api_v2_core_AggregatedConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_ads(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_initial_fetch_timeout(envoy_api_v2_core_ConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ConfigSource_mutable_initial_fetch_timeout(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ConfigSource_initial_fetch_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_initial_fetch_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_self(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_SelfConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_SelfConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 5);
+}
+UPB_INLINE struct envoy_api_v2_core_SelfConfigSource* envoy_api_v2_core_ConfigSource_mutable_self(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SelfConfigSource* sub = (struct envoy_api_v2_core_SelfConfigSource*)envoy_api_v2_core_ConfigSource_self(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SelfConfigSource*)upb_msg_new(&envoy_api_v2_core_SelfConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_self(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_resource_api_version(envoy_api_v2_core_ConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h
new file mode 100644
index 0000000..c4e1a4b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h	
@@ -0,0 +1,666 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/grpc_service.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_GrpcService;
+struct envoy_api_v2_core_GrpcService_EnvoyGrpc;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService;
+typedef struct envoy_api_v2_core_GrpcService envoy_api_v2_core_GrpcService;
+typedef struct envoy_api_v2_core_GrpcService_EnvoyGrpc envoy_api_v2_core_GrpcService_EnvoyGrpc;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc envoy_api_v2_core_GrpcService_GoogleGrpc;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_HeaderValue;
+struct google_protobuf_Any;
+struct google_protobuf_Duration;
+struct google_protobuf_Empty;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValue_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Empty_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.core.GrpcService */
+
+UPB_INLINE envoy_api_v2_core_GrpcService *envoy_api_v2_core_GrpcService_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService *)upb_msg_new(&envoy_api_v2_core_GrpcService_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService *envoy_api_v2_core_GrpcService_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService *ret = envoy_api_v2_core_GrpcService_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_serialize(const envoy_api_v2_core_GrpcService *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_target_specifier_envoy_grpc = 1,
+  envoy_api_v2_core_GrpcService_target_specifier_google_grpc = 2,
+  envoy_api_v2_core_GrpcService_target_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_target_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_target_specifier_oneofcases envoy_api_v2_core_GrpcService_target_specifier_case(const envoy_api_v2_core_GrpcService* msg) { return (envoy_api_v2_core_GrpcService_target_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_has_envoy_grpc(const envoy_api_v2_core_GrpcService *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_EnvoyGrpc* envoy_api_v2_core_GrpcService_envoy_grpc(const envoy_api_v2_core_GrpcService *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_EnvoyGrpc*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_has_google_grpc(const envoy_api_v2_core_GrpcService *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc* envoy_api_v2_core_GrpcService_google_grpc(const envoy_api_v2_core_GrpcService *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_GrpcService_timeout(const envoy_api_v2_core_GrpcService *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValue* const* envoy_api_v2_core_GrpcService_initial_metadata(const envoy_api_v2_core_GrpcService *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValue* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_envoy_grpc(envoy_api_v2_core_GrpcService *msg, envoy_api_v2_core_GrpcService_EnvoyGrpc* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_EnvoyGrpc*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_EnvoyGrpc* envoy_api_v2_core_GrpcService_mutable_envoy_grpc(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_EnvoyGrpc* sub = (struct envoy_api_v2_core_GrpcService_EnvoyGrpc*)envoy_api_v2_core_GrpcService_envoy_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_EnvoyGrpc*)upb_msg_new(&envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_envoy_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_google_grpc(envoy_api_v2_core_GrpcService *msg, envoy_api_v2_core_GrpcService_GoogleGrpc* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc* envoy_api_v2_core_GrpcService_mutable_google_grpc(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc*)envoy_api_v2_core_GrpcService_google_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_google_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_timeout(envoy_api_v2_core_GrpcService *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_GrpcService_mutable_timeout(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_GrpcService_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue** envoy_api_v2_core_GrpcService_mutable_initial_metadata(envoy_api_v2_core_GrpcService *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValue**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue** envoy_api_v2_core_GrpcService_resize_initial_metadata(envoy_api_v2_core_GrpcService *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValue**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_GrpcService_add_initial_metadata(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.EnvoyGrpc */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_EnvoyGrpc *envoy_api_v2_core_GrpcService_EnvoyGrpc_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_EnvoyGrpc *)upb_msg_new(&envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_EnvoyGrpc *envoy_api_v2_core_GrpcService_EnvoyGrpc_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_EnvoyGrpc *ret = envoy_api_v2_core_GrpcService_EnvoyGrpc_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_EnvoyGrpc_serialize(const envoy_api_v2_core_GrpcService_EnvoyGrpc *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_EnvoyGrpc_cluster_name(const envoy_api_v2_core_GrpcService_EnvoyGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_EnvoyGrpc_set_cluster_name(envoy_api_v2_core_GrpcService_EnvoyGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc *envoy_api_v2_core_GrpcService_GoogleGrpc_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc *envoy_api_v2_core_GrpcService_GoogleGrpc_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_target_uri(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_channel_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*, UPB_SIZE(24, 48)); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* const* envoy_api_v2_core_GrpcService_GoogleGrpc_call_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t *len) { return (const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_stat_prefix(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_credentials_factory_name(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_config(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_target_uri(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_channel_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_channel_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_channel_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_set_channel_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials** envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t *len) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials** envoy_api_v2_core_GrpcService_GoogleGrpc_resize_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_add_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_stat_prefix(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_credentials_factory_name(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_config(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_config(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_GrpcService_GoogleGrpc_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_set_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.SslCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_root_certs(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_private_key(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_cert_chain(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_root_certs(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_root_certs(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_root_certs(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_root_certs(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_private_key(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_private_key(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_private_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_private_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_cert_chain(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_cert_chain(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_cert_chain(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_cert_chain(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.GoogleLocalCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.ChannelCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_ssl_credentials = 1,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_google_default = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_local_credentials = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_ssl_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_ssl_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_google_default(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_google_default(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Empty*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_local_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_local_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_ssl_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_ssl_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_ssl_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_ssl_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_google_default(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, struct google_protobuf_Empty* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Empty*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_google_default(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct google_protobuf_Empty* sub = (struct google_protobuf_Empty*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_google_default(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Empty*)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_google_default(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_local_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_local_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_local_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_local_credentials(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_access_token = 1,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_compute_engine = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_refresh_token = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_service_account_jwt_access = 4,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_iam = 5,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_from_plugin = 6,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_sts_service = 7,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_access_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_access_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_compute_engine(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE const struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_compute_engine(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Empty*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_refresh_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_refresh_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_service_account_jwt_access(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 4); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_service_account_jwt_access(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_iam(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_iam(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_from_plugin(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 6); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_from_plugin(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 6, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_sts_service(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 7); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_sts_service(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 7, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_access_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_compute_engine(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, struct google_protobuf_Empty* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Empty*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_google_compute_engine(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct google_protobuf_Empty* sub = (struct google_protobuf_Empty*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_compute_engine(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Empty*)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_compute_engine(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_refresh_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_service_account_jwt_access(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 4);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_service_account_jwt_access(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_service_account_jwt_access(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_service_account_jwt_access(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_iam(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_google_iam(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_iam(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_iam(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_from_plugin(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 6);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_from_plugin(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_from_plugin(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_from_plugin(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_sts_service(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 7);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_sts_service(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_sts_service(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_sts_service(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.ServiceAccountJWTAccessCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_json_key(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_token_lifetime_seconds(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_set_json_key(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_set_token_lifetime_seconds(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.GoogleIAMCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_authorization_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_authority_selector(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_set_authorization_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_set_authority_selector(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.MetadataCredentialsFromPlugin */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_config = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_typed_config = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_name(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_has_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_has_typed_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_typed_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_name(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_mutable_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_typed_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_mutable_typed_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.StsService */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_token_exchange_service_uri(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_resource(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_audience(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_scope(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_requested_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 64)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_subject_token_path(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 80)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_subject_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 96)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_actor_token_path(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 112)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_actor_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 128)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_token_exchange_service_uri(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_resource(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_audience(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_scope(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_requested_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_subject_token_path(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 80)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_subject_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 96)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_actor_token_path(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 112)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_actor_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 128)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h
new file mode 100644
index 0000000..f619e66
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h	
@@ -0,0 +1,682 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/health_check.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_HealthCheck;
+struct envoy_api_v2_core_HealthCheck_Payload;
+struct envoy_api_v2_core_HealthCheck_HttpHealthCheck;
+struct envoy_api_v2_core_HealthCheck_TcpHealthCheck;
+struct envoy_api_v2_core_HealthCheck_RedisHealthCheck;
+struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck;
+struct envoy_api_v2_core_HealthCheck_CustomHealthCheck;
+struct envoy_api_v2_core_HealthCheck_TlsOptions;
+typedef struct envoy_api_v2_core_HealthCheck envoy_api_v2_core_HealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_Payload envoy_api_v2_core_HealthCheck_Payload;
+typedef struct envoy_api_v2_core_HealthCheck_HttpHealthCheck envoy_api_v2_core_HealthCheck_HttpHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_TcpHealthCheck envoy_api_v2_core_HealthCheck_TcpHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_RedisHealthCheck envoy_api_v2_core_HealthCheck_RedisHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck envoy_api_v2_core_HealthCheck_GrpcHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_CustomHealthCheck envoy_api_v2_core_HealthCheck_CustomHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_TlsOptions envoy_api_v2_core_HealthCheck_TlsOptions;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_Payload_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_TlsOptions_msginit;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_type_Int64Range;
+struct envoy_type_matcher_StringMatcher;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_UNKNOWN = 0,
+  envoy_api_v2_core_HEALTHY = 1,
+  envoy_api_v2_core_UNHEALTHY = 2,
+  envoy_api_v2_core_DRAINING = 3,
+  envoy_api_v2_core_TIMEOUT = 4,
+  envoy_api_v2_core_DEGRADED = 5
+} envoy_api_v2_core_HealthStatus;
+
+
+/* envoy.api.v2.core.HealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck *envoy_api_v2_core_HealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck *envoy_api_v2_core_HealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck *ret = envoy_api_v2_core_HealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_serialize(const envoy_api_v2_core_HealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_health_checker_http_health_check = 8,
+  envoy_api_v2_core_HealthCheck_health_checker_tcp_health_check = 9,
+  envoy_api_v2_core_HealthCheck_health_checker_grpc_health_check = 11,
+  envoy_api_v2_core_HealthCheck_health_checker_custom_health_check = 13,
+  envoy_api_v2_core_HealthCheck_health_checker_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_health_checker_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_health_checker_oneofcases envoy_api_v2_core_HealthCheck_health_checker_case(const envoy_api_v2_core_HealthCheck* msg) { return (envoy_api_v2_core_HealthCheck_health_checker_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(72, 136)); }
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_timeout(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_interval_jitter(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_unhealthy_threshold(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_healthy_threshold(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_alt_port(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 64)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_HealthCheck_reuse_connection(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(40, 72)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_http_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 8); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_HttpHealthCheck* envoy_api_v2_core_HealthCheck_http_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_HttpHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 8, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_tcp_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 9); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_TcpHealthCheck* envoy_api_v2_core_HealthCheck_tcp_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_TcpHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 9, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_grpc_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 11); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_GrpcHealthCheck* envoy_api_v2_core_HealthCheck_grpc_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_GrpcHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 11, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_no_traffic_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(44, 80)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_custom_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 13); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_CustomHealthCheck* envoy_api_v2_core_HealthCheck_custom_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_CustomHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 13, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_unhealthy_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(48, 88)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_unhealthy_edge_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(52, 96)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_healthy_edge_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(56, 104)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_event_log_path(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint32_t envoy_api_v2_core_HealthCheck_interval_jitter_percent(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_always_log_health_check_failures(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_initial_jitter(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 112)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_TlsOptions* envoy_api_v2_core_HealthCheck_tls_options(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_TlsOptions*, UPB_SIZE(64, 120)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_timeout(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_timeout(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval_jitter(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_interval_jitter(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_interval_jitter(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_interval_jitter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_threshold(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_unhealthy_threshold(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_unhealthy_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_healthy_threshold(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_healthy_threshold(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_healthy_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_healthy_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_alt_port(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_alt_port(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_alt_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_alt_port(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_reuse_connection(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_HealthCheck_mutable_reuse_connection(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_HealthCheck_reuse_connection(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_reuse_connection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_http_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_HttpHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_HttpHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 8);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_HttpHealthCheck* envoy_api_v2_core_HealthCheck_mutable_http_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_HttpHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_HttpHealthCheck*)envoy_api_v2_core_HealthCheck_http_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_HttpHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_http_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_tcp_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_TcpHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_TcpHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 9);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_TcpHealthCheck* envoy_api_v2_core_HealthCheck_mutable_tcp_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_TcpHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_TcpHealthCheck*)envoy_api_v2_core_HealthCheck_tcp_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_TcpHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_tcp_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_grpc_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_GrpcHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_GrpcHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 11);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck* envoy_api_v2_core_HealthCheck_mutable_grpc_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck*)envoy_api_v2_core_HealthCheck_grpc_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_grpc_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_no_traffic_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(44, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_no_traffic_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_no_traffic_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_no_traffic_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_custom_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_CustomHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_CustomHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 13);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_CustomHealthCheck* envoy_api_v2_core_HealthCheck_mutable_custom_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_CustomHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_CustomHealthCheck*)envoy_api_v2_core_HealthCheck_custom_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_CustomHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_custom_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(48, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_unhealthy_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_unhealthy_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(52, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_unhealthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_unhealthy_edge_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_edge_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_healthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(56, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_healthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_healthy_edge_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_healthy_edge_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_event_log_path(envoy_api_v2_core_HealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval_jitter_percent(envoy_api_v2_core_HealthCheck *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_always_log_health_check_failures(envoy_api_v2_core_HealthCheck *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_initial_jitter(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_initial_jitter(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_initial_jitter(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_initial_jitter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_tls_options(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_TlsOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_TlsOptions*, UPB_SIZE(64, 120)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_TlsOptions* envoy_api_v2_core_HealthCheck_mutable_tls_options(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_TlsOptions* sub = (struct envoy_api_v2_core_HealthCheck_TlsOptions*)envoy_api_v2_core_HealthCheck_tls_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_TlsOptions*)upb_msg_new(&envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_tls_options(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.Payload */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload *envoy_api_v2_core_HealthCheck_Payload_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_Payload *)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload *envoy_api_v2_core_HealthCheck_Payload_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_Payload *ret = envoy_api_v2_core_HealthCheck_Payload_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_Payload_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_Payload_serialize(const envoy_api_v2_core_HealthCheck_Payload *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_Payload_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_Payload_payload_text = 1,
+  envoy_api_v2_core_HealthCheck_Payload_payload_binary = 2,
+  envoy_api_v2_core_HealthCheck_Payload_payload_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases envoy_api_v2_core_HealthCheck_Payload_payload_case(const envoy_api_v2_core_HealthCheck_Payload* msg) { return (envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_Payload_has_text(const envoy_api_v2_core_HealthCheck_Payload *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_Payload_text(const envoy_api_v2_core_HealthCheck_Payload *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_Payload_has_binary(const envoy_api_v2_core_HealthCheck_Payload *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_Payload_binary(const envoy_api_v2_core_HealthCheck_Payload *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_Payload_set_text(envoy_api_v2_core_HealthCheck_Payload *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_Payload_set_binary(envoy_api_v2_core_HealthCheck_Payload *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+
+/* envoy.api.v2.core.HealthCheck.HttpHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_HttpHealthCheck *envoy_api_v2_core_HealthCheck_HttpHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_HttpHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_HttpHealthCheck *envoy_api_v2_core_HealthCheck_HttpHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_HttpHealthCheck *ret = envoy_api_v2_core_HealthCheck_HttpHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_HttpHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_host(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_path(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_send(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(36, 64)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_receive(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(40, 72)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_request_headers_to_add(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_HttpHealthCheck_use_http2(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_request_headers_to_remove(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(52, 96), len); }
+UPB_INLINE const struct envoy_type_Int64Range* const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_expected_statuses(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (const struct envoy_type_Int64Range* const*)_upb_array_accessor(msg, UPB_SIZE(56, 104), len); }
+UPB_INLINE int32_t envoy_api_v2_core_HealthCheck_HttpHealthCheck_codec_client_type(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name_matcher(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_matcher_StringMatcher*, UPB_SIZE(44, 80)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_host(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_path(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_send(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_send(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_send(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_send(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_receive(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_receive(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_receive(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_receive(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_use_http2(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 96), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 96), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 96), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_type_Int64Range** envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (struct envoy_type_Int64Range**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 104), len);
+}
+UPB_INLINE struct envoy_type_Int64Range** envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_Int64Range**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_Int64Range* envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_type_Int64Range* sub = (struct envoy_type_Int64Range*)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_codec_client_type(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name_matcher(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, struct envoy_type_matcher_StringMatcher* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_matcher_StringMatcher*, UPB_SIZE(44, 80)) = value;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_service_name_matcher(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name_matcher(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name_matcher(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.TcpHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_TcpHealthCheck *envoy_api_v2_core_HealthCheck_TcpHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_TcpHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_TcpHealthCheck *envoy_api_v2_core_HealthCheck_TcpHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_TcpHealthCheck *ret = envoy_api_v2_core_HealthCheck_TcpHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_TcpHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_send(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* const* envoy_api_v2_core_HealthCheck_TcpHealthCheck_receive(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t *len) { return (const envoy_api_v2_core_HealthCheck_Payload* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_TcpHealthCheck_set_send(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_mutable_send(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_TcpHealthCheck_send(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_TcpHealthCheck_set_send(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload** envoy_api_v2_core_HealthCheck_TcpHealthCheck_mutable_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t *len) {
+  return (envoy_api_v2_core_HealthCheck_Payload**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload** envoy_api_v2_core_HealthCheck_TcpHealthCheck_resize_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_Payload**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_add_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.RedisHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_RedisHealthCheck *envoy_api_v2_core_HealthCheck_RedisHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_RedisHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_RedisHealthCheck *envoy_api_v2_core_HealthCheck_RedisHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_RedisHealthCheck *ret = envoy_api_v2_core_HealthCheck_RedisHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_RedisHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_RedisHealthCheck_key(const envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_RedisHealthCheck_set_key(envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.HealthCheck.GrpcHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_GrpcHealthCheck *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_GrpcHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_GrpcHealthCheck *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_GrpcHealthCheck *ret = envoy_api_v2_core_HealthCheck_GrpcHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_GrpcHealthCheck_service_name(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_GrpcHealthCheck_authority(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_GrpcHealthCheck_set_service_name(envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_GrpcHealthCheck_set_authority(envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.HealthCheck.CustomHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck *envoy_api_v2_core_HealthCheck_CustomHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_CustomHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck *envoy_api_v2_core_HealthCheck_CustomHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck *ret = envoy_api_v2_core_HealthCheck_CustomHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_CustomHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_config = 2,
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_typed_config = 3,
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_case(const envoy_api_v2_core_HealthCheck_CustomHealthCheck* msg) { return (envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_CustomHealthCheck_name(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_CustomHealthCheck_has_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_HealthCheck_CustomHealthCheck_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_CustomHealthCheck_has_typed_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_HealthCheck_CustomHealthCheck_typed_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_name(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_HealthCheck_CustomHealthCheck_mutable_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_HealthCheck_CustomHealthCheck_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_typed_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_HealthCheck_CustomHealthCheck_mutable_typed_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_HealthCheck_CustomHealthCheck_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.TlsOptions */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_TlsOptions *envoy_api_v2_core_HealthCheck_TlsOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_TlsOptions *)upb_msg_new(&envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_TlsOptions *envoy_api_v2_core_HealthCheck_TlsOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_TlsOptions *ret = envoy_api_v2_core_HealthCheck_TlsOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_TlsOptions_serialize(const envoy_api_v2_core_HealthCheck_TlsOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_api_v2_core_HealthCheck_TlsOptions_alpn_protocols(const envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_TlsOptions_mutable_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_TlsOptions_resize_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_TlsOptions_add_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h
new file mode 100644
index 0000000..1ecd62f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h	
@@ -0,0 +1,104 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/http_uri.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_HttpUri;
+typedef struct envoy_api_v2_core_HttpUri envoy_api_v2_core_HttpUri;
+extern const upb_msglayout envoy_api_v2_core_HttpUri_msginit;
+struct google_protobuf_Duration;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* envoy.api.v2.core.HttpUri */
+
+UPB_INLINE envoy_api_v2_core_HttpUri *envoy_api_v2_core_HttpUri_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HttpUri *)upb_msg_new(&envoy_api_v2_core_HttpUri_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HttpUri *envoy_api_v2_core_HttpUri_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HttpUri *ret = envoy_api_v2_core_HttpUri_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HttpUri_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HttpUri_serialize(const envoy_api_v2_core_HttpUri *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HttpUri_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HttpUri_http_upstream_type_cluster = 2,
+  envoy_api_v2_core_HttpUri_http_upstream_type_NOT_SET = 0
+} envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases envoy_api_v2_core_HttpUri_http_upstream_type_case(const envoy_api_v2_core_HttpUri* msg) { return (envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_HttpUri_uri(const envoy_api_v2_core_HttpUri *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HttpUri_has_cluster(const envoy_api_v2_core_HttpUri *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_HttpUri_cluster(const envoy_api_v2_core_HttpUri *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpUri_timeout(const envoy_api_v2_core_HttpUri *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_uri(envoy_api_v2_core_HttpUri *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_cluster(envoy_api_v2_core_HttpUri *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 2);
+}
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_timeout(envoy_api_v2_core_HttpUri *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpUri_mutable_timeout(envoy_api_v2_core_HttpUri *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpUri_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpUri_set_timeout(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h
new file mode 100644
index 0000000..a405cf4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h	
@@ -0,0 +1,460 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/protocol.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_TcpProtocolOptions;
+struct envoy_api_v2_core_UpstreamHttpProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat;
+struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_GrpcProtocolOptions;
+typedef struct envoy_api_v2_core_TcpProtocolOptions envoy_api_v2_core_TcpProtocolOptions;
+typedef struct envoy_api_v2_core_UpstreamHttpProtocolOptions envoy_api_v2_core_UpstreamHttpProtocolOptions;
+typedef struct envoy_api_v2_core_HttpProtocolOptions envoy_api_v2_core_HttpProtocolOptions;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions envoy_api_v2_core_Http1ProtocolOptions;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords;
+typedef struct envoy_api_v2_core_Http2ProtocolOptions envoy_api_v2_core_Http2ProtocolOptions;
+typedef struct envoy_api_v2_core_GrpcProtocolOptions envoy_api_v2_core_GrpcProtocolOptions;
+extern const upb_msglayout envoy_api_v2_core_TcpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcProtocolOptions_msginit;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.core.TcpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_TcpProtocolOptions *envoy_api_v2_core_TcpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TcpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_TcpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TcpProtocolOptions *envoy_api_v2_core_TcpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TcpProtocolOptions *ret = envoy_api_v2_core_TcpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TcpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TcpProtocolOptions_serialize(const envoy_api_v2_core_TcpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TcpProtocolOptions_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.UpstreamHttpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_UpstreamHttpProtocolOptions *envoy_api_v2_core_UpstreamHttpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_UpstreamHttpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_UpstreamHttpProtocolOptions *envoy_api_v2_core_UpstreamHttpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_UpstreamHttpProtocolOptions *ret = envoy_api_v2_core_UpstreamHttpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_UpstreamHttpProtocolOptions_serialize(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_core_UpstreamHttpProtocolOptions_auto_sni(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_UpstreamHttpProtocolOptions_auto_san_validation(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_core_UpstreamHttpProtocolOptions_set_auto_sni(envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_UpstreamHttpProtocolOptions_set_auto_san_validation(envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.core.HttpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_HttpProtocolOptions *envoy_api_v2_core_HttpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HttpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HttpProtocolOptions *envoy_api_v2_core_HttpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HttpProtocolOptions *ret = envoy_api_v2_core_HttpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HttpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HttpProtocolOptions_serialize(const envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HttpProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_idle_timeout(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HttpProtocolOptions_max_headers_count(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_max_connection_duration(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_idle_timeout(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_mutable_idle_timeout(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpProtocolOptions_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_max_headers_count(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HttpProtocolOptions_mutable_max_headers_count(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HttpProtocolOptions_max_headers_count(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_max_headers_count(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_max_connection_duration(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_mutable_max_connection_duration(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpProtocolOptions_max_connection_duration(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_max_connection_duration(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions *envoy_api_v2_core_Http1ProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions *envoy_api_v2_core_Http1ProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions *ret = envoy_api_v2_core_Http1ProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_serialize(const envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_Http1ProtocolOptions_allow_absolute_url(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_accept_http_10(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Http1ProtocolOptions_default_host_for_http_10(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* envoy_api_v2_core_Http1ProtocolOptions_header_key_format(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_enable_trailers(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_allow_absolute_url(envoy_api_v2_core_Http1ProtocolOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_Http1ProtocolOptions_mutable_allow_absolute_url(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_Http1ProtocolOptions_allow_absolute_url(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_set_allow_absolute_url(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_accept_http_10(envoy_api_v2_core_Http1ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_default_host_for_http_10(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_header_key_format(envoy_api_v2_core_Http1ProtocolOptions *msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* envoy_api_v2_core_Http1ProtocolOptions_mutable_header_key_format(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*)envoy_api_v2_core_Http1ProtocolOptions_header_key_format(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_set_header_key_format(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_enable_trailers(envoy_api_v2_core_Http1ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions.HeaderKeyFormat */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *ret = envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_serialize(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_proper_case_words = 1,
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_NOT_SET = 0
+} envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases;
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_case(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* msg) { return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_has_proper_case_words(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_proper_case_words(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_set_proper_case_words(envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_mutable_proper_case_words(envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*)envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_proper_case_words(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_set_proper_case_words(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions.HeaderKeyFormat.ProperCaseWords */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *ret = envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_serialize(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.Http2ProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_Http2ProtocolOptions *envoy_api_v2_core_Http2ProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http2ProtocolOptions *)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http2ProtocolOptions *envoy_api_v2_core_Http2ProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http2ProtocolOptions *ret = envoy_api_v2_core_Http2ProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http2ProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http2ProtocolOptions_serialize(const envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http2ProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_hpack_table_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_concurrent_streams(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_initial_stream_window_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_initial_connection_window_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_allow_connect(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_allow_metadata(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_outbound_frames(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_outbound_control_frames(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_consecutive_inbound_frames_with_empty_payload(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_inbound_priority_frames_per_stream(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_inbound_window_update_frames_per_data_frame_sent(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_stream_error_on_invalid_http_messaging(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_hpack_table_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_hpack_table_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_hpack_table_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_hpack_table_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_concurrent_streams(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_concurrent_streams(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_concurrent_streams(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_concurrent_streams(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_initial_stream_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_initial_stream_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_initial_stream_window_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_initial_stream_window_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_initial_connection_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_initial_connection_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_initial_connection_window_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_initial_connection_window_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_allow_connect(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_allow_metadata(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_outbound_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_outbound_frames(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_frames(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_control_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_outbound_control_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_outbound_control_frames(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_control_frames(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_consecutive_inbound_frames_with_empty_payload(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_consecutive_inbound_frames_with_empty_payload(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_consecutive_inbound_frames_with_empty_payload(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_consecutive_inbound_frames_with_empty_payload(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_priority_frames_per_stream(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_inbound_priority_frames_per_stream(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_inbound_priority_frames_per_stream(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_priority_frames_per_stream(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_window_update_frames_per_data_frame_sent(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_inbound_window_update_frames_per_data_frame_sent(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_inbound_window_update_frames_per_data_frame_sent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_window_update_frames_per_data_frame_sent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_stream_error_on_invalid_http_messaging(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* envoy.api.v2.core.GrpcProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_GrpcProtocolOptions *envoy_api_v2_core_GrpcProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcProtocolOptions *)upb_msg_new(&envoy_api_v2_core_GrpcProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcProtocolOptions *envoy_api_v2_core_GrpcProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcProtocolOptions *ret = envoy_api_v2_core_GrpcProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcProtocolOptions_serialize(const envoy_api_v2_core_GrpcProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_core_GrpcProtocolOptions_http2_protocol_options(const envoy_api_v2_core_GrpcProtocolOptions *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcProtocolOptions_set_http2_protocol_options(envoy_api_v2_core_GrpcProtocolOptions *msg, envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_core_GrpcProtocolOptions_mutable_http2_protocol_options(envoy_api_v2_core_GrpcProtocolOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_api_v2_core_GrpcProtocolOptions_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcProtocolOptions_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h
new file mode 100644
index 0000000..d6a8867
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h	
@@ -0,0 +1,416 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/discovery.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_
+#define ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_DiscoveryRequest;
+struct envoy_api_v2_DiscoveryResponse;
+struct envoy_api_v2_DeltaDiscoveryRequest;
+struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry;
+struct envoy_api_v2_DeltaDiscoveryResponse;
+struct envoy_api_v2_Resource;
+typedef struct envoy_api_v2_DiscoveryRequest envoy_api_v2_DiscoveryRequest;
+typedef struct envoy_api_v2_DiscoveryResponse envoy_api_v2_DiscoveryResponse;
+typedef struct envoy_api_v2_DeltaDiscoveryRequest envoy_api_v2_DeltaDiscoveryRequest;
+typedef struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry;
+typedef struct envoy_api_v2_DeltaDiscoveryResponse envoy_api_v2_DeltaDiscoveryResponse;
+typedef struct envoy_api_v2_Resource envoy_api_v2_Resource;
+extern const upb_msglayout envoy_api_v2_DiscoveryRequest_msginit;
+extern const upb_msglayout envoy_api_v2_DiscoveryResponse_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryResponse_msginit;
+extern const upb_msglayout envoy_api_v2_Resource_msginit;
+struct envoy_api_v2_core_ControlPlane;
+struct envoy_api_v2_core_Node;
+struct google_protobuf_Any;
+struct google_rpc_Status;
+extern const upb_msglayout envoy_api_v2_core_ControlPlane_msginit;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_rpc_Status_msginit;
+
+
+/* envoy.api.v2.DiscoveryRequest */
+
+UPB_INLINE envoy_api_v2_DiscoveryRequest *envoy_api_v2_DiscoveryRequest_new(upb_arena *arena) {
+  return (envoy_api_v2_DiscoveryRequest *)upb_msg_new(&envoy_api_v2_DiscoveryRequest_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DiscoveryRequest *envoy_api_v2_DiscoveryRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DiscoveryRequest *ret = envoy_api_v2_DiscoveryRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DiscoveryRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DiscoveryRequest_serialize(const envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DiscoveryRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_version_info(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_api_v2_DiscoveryRequest_node(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DiscoveryRequest_resource_names(const envoy_api_v2_DiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_type_url(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_response_nonce(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_rpc_Status* envoy_api_v2_DiscoveryRequest_error_detail(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct google_rpc_Status*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_version_info(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_node(envoy_api_v2_DiscoveryRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_api_v2_DiscoveryRequest_mutable_node(envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_api_v2_DiscoveryRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DiscoveryRequest_mutable_resource_names(envoy_api_v2_DiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DiscoveryRequest_resize_resource_names(envoy_api_v2_DiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DiscoveryRequest_add_resource_names(envoy_api_v2_DiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_type_url(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_response_nonce(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_error_detail(envoy_api_v2_DiscoveryRequest *msg, struct google_rpc_Status* value) {
+  UPB_FIELD_AT(msg, struct google_rpc_Status*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_rpc_Status* envoy_api_v2_DiscoveryRequest_mutable_error_detail(envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena) {
+  struct google_rpc_Status* sub = (struct google_rpc_Status*)envoy_api_v2_DiscoveryRequest_error_detail(msg);
+  if (sub == NULL) {
+    sub = (struct google_rpc_Status*)upb_msg_new(&google_rpc_Status_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryRequest_set_error_detail(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DiscoveryResponse */
+
+UPB_INLINE envoy_api_v2_DiscoveryResponse *envoy_api_v2_DiscoveryResponse_new(upb_arena *arena) {
+  return (envoy_api_v2_DiscoveryResponse *)upb_msg_new(&envoy_api_v2_DiscoveryResponse_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DiscoveryResponse *envoy_api_v2_DiscoveryResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DiscoveryResponse *ret = envoy_api_v2_DiscoveryResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DiscoveryResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DiscoveryResponse_serialize(const envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DiscoveryResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_version_info(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Any* const* envoy_api_v2_DiscoveryResponse_resources(const envoy_api_v2_DiscoveryResponse *msg, size_t *len) { return (const struct google_protobuf_Any* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE bool envoy_api_v2_DiscoveryResponse_canary(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_type_url(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_nonce(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_ControlPlane* envoy_api_v2_DiscoveryResponse_control_plane(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ControlPlane*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_version_info(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Any** envoy_api_v2_DiscoveryResponse_mutable_resources(envoy_api_v2_DiscoveryResponse *msg, size_t *len) {
+  return (struct google_protobuf_Any**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE struct google_protobuf_Any** envoy_api_v2_DiscoveryResponse_resize_resources(envoy_api_v2_DiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Any**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_DiscoveryResponse_add_resources(envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_canary(envoy_api_v2_DiscoveryResponse *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_type_url(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_nonce(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_control_plane(envoy_api_v2_DiscoveryResponse *msg, struct envoy_api_v2_core_ControlPlane* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ControlPlane*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ControlPlane* envoy_api_v2_DiscoveryResponse_mutable_control_plane(envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ControlPlane* sub = (struct envoy_api_v2_core_ControlPlane*)envoy_api_v2_DiscoveryResponse_control_plane(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ControlPlane*)upb_msg_new(&envoy_api_v2_core_ControlPlane_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryResponse_set_control_plane(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DeltaDiscoveryRequest */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest *envoy_api_v2_DeltaDiscoveryRequest_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest *envoy_api_v2_DeltaDiscoveryRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryRequest *ret = envoy_api_v2_DeltaDiscoveryRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryRequest_serialize(const envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryRequest_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_api_v2_DeltaDiscoveryRequest_node(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_type_url(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryRequest_resource_names_subscribe(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryRequest_resource_names_unsubscribe(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* const* envoy_api_v2_DeltaDiscoveryRequest_initial_resource_versions(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_response_nonce(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_rpc_Status* envoy_api_v2_DeltaDiscoveryRequest_error_detail(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct google_rpc_Status*, UPB_SIZE(20, 40)); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_node(envoy_api_v2_DeltaDiscoveryRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_api_v2_DeltaDiscoveryRequest_mutable_node(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_api_v2_DeltaDiscoveryRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DeltaDiscoveryRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_type_url(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_mutable_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_resize_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryRequest_add_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_mutable_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_resize_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryRequest_add_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry** envoy_api_v2_DeltaDiscoveryRequest_mutable_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry** envoy_api_v2_DeltaDiscoveryRequest_resize_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* envoy_api_v2_DeltaDiscoveryRequest_add_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* sub = (struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry*)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_response_nonce(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_error_detail(envoy_api_v2_DeltaDiscoveryRequest *msg, struct google_rpc_Status* value) {
+  UPB_FIELD_AT(msg, struct google_rpc_Status*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_rpc_Status* envoy_api_v2_DeltaDiscoveryRequest_mutable_error_detail(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct google_rpc_Status* sub = (struct google_rpc_Status*)envoy_api_v2_DeltaDiscoveryRequest_error_detail(msg);
+  if (sub == NULL) {
+    sub = (struct google_rpc_Status*)upb_msg_new(&google_rpc_Status_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DeltaDiscoveryRequest_set_error_detail(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DeltaDiscoveryRequest.InitialResourceVersionsEntry */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *ret = envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_serialize(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_key(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_value(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_set_key(envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_set_value(envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.DeltaDiscoveryResponse */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryResponse *envoy_api_v2_DeltaDiscoveryResponse_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryResponse *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryResponse_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryResponse *envoy_api_v2_DeltaDiscoveryResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryResponse *ret = envoy_api_v2_DeltaDiscoveryResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryResponse_serialize(const envoy_api_v2_DeltaDiscoveryResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_system_version_info(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_Resource* const* envoy_api_v2_DeltaDiscoveryResponse_resources(const envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) { return (const envoy_api_v2_Resource* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_type_url(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_nonce(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryResponse_removed_resources(const envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_system_version_info(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_Resource** envoy_api_v2_DeltaDiscoveryResponse_mutable_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) {
+  return (envoy_api_v2_Resource**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE envoy_api_v2_Resource** envoy_api_v2_DeltaDiscoveryResponse_resize_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Resource**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Resource* envoy_api_v2_DeltaDiscoveryResponse_add_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_arena *arena) {
+  struct envoy_api_v2_Resource* sub = (struct envoy_api_v2_Resource*)upb_msg_new(&envoy_api_v2_Resource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_type_url(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_nonce(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryResponse_mutable_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryResponse_resize_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryResponse_add_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.Resource */
+
+UPB_INLINE envoy_api_v2_Resource *envoy_api_v2_Resource_new(upb_arena *arena) {
+  return (envoy_api_v2_Resource *)upb_msg_new(&envoy_api_v2_Resource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Resource *envoy_api_v2_Resource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Resource *ret = envoy_api_v2_Resource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Resource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Resource_serialize(const envoy_api_v2_Resource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Resource_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Resource_version(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Resource_resource(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_Resource_name(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_Resource_aliases(const envoy_api_v2_Resource *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+
+UPB_INLINE void envoy_api_v2_Resource_set_version(envoy_api_v2_Resource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Resource_set_resource(envoy_api_v2_Resource *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Resource_mutable_resource(envoy_api_v2_Resource *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Resource_resource(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Resource_set_resource(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Resource_set_name(envoy_api_v2_Resource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_Resource_mutable_aliases(envoy_api_v2_Resource *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Resource_resize_aliases(envoy_api_v2_Resource *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Resource_add_aliases(envoy_api_v2_Resource *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h
new file mode 100644
index 0000000..e2a66d4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/eds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_EDS_PROTO_UPB_H_
+#define ENVOY_API_V2_EDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_EdsDummy;
+typedef struct envoy_api_v2_EdsDummy envoy_api_v2_EdsDummy;
+extern const upb_msglayout envoy_api_v2_EdsDummy_msginit;
+
+
+/* envoy.api.v2.EdsDummy */
+
+UPB_INLINE envoy_api_v2_EdsDummy *envoy_api_v2_EdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_EdsDummy *)upb_msg_new(&envoy_api_v2_EdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_EdsDummy *envoy_api_v2_EdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_EdsDummy *ret = envoy_api_v2_EdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_EdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_EdsDummy_serialize(const envoy_api_v2_EdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_EdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_EDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h
new file mode 100644
index 0000000..45c3206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h	
@@ -0,0 +1,264 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_ClusterLoadAssignment;
+struct envoy_api_v2_ClusterLoadAssignment_Policy;
+struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload;
+struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry;
+typedef struct envoy_api_v2_ClusterLoadAssignment envoy_api_v2_ClusterLoadAssignment;
+typedef struct envoy_api_v2_ClusterLoadAssignment_Policy envoy_api_v2_ClusterLoadAssignment_Policy;
+typedef struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload;
+typedef struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit;
+struct envoy_api_v2_endpoint_Endpoint;
+struct envoy_api_v2_endpoint_LocalityLbEndpoints;
+struct envoy_type_FractionalPercent;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LocalityLbEndpoints_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.ClusterLoadAssignment */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment *envoy_api_v2_ClusterLoadAssignment_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment *envoy_api_v2_ClusterLoadAssignment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment *ret = envoy_api_v2_ClusterLoadAssignment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_serialize(const envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_cluster_name(const envoy_api_v2_ClusterLoadAssignment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_LocalityLbEndpoints* const* envoy_api_v2_ClusterLoadAssignment_endpoints(const envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) { return (const struct envoy_api_v2_endpoint_LocalityLbEndpoints* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_Policy* envoy_api_v2_ClusterLoadAssignment_policy(const envoy_api_v2_ClusterLoadAssignment *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_ClusterLoadAssignment_Policy*, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* const* envoy_api_v2_ClusterLoadAssignment_named_endpoints(const envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) { return (const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_set_cluster_name(envoy_api_v2_ClusterLoadAssignment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints** envoy_api_v2_ClusterLoadAssignment_mutable_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) {
+  return (struct envoy_api_v2_endpoint_LocalityLbEndpoints**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints** envoy_api_v2_ClusterLoadAssignment_resize_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_endpoint_LocalityLbEndpoints**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints* envoy_api_v2_ClusterLoadAssignment_add_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_LocalityLbEndpoints* sub = (struct envoy_api_v2_endpoint_LocalityLbEndpoints*)upb_msg_new(&envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_set_policy(envoy_api_v2_ClusterLoadAssignment *msg, envoy_api_v2_ClusterLoadAssignment_Policy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_ClusterLoadAssignment_Policy*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_Policy* envoy_api_v2_ClusterLoadAssignment_mutable_policy(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_Policy* sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy*)envoy_api_v2_ClusterLoadAssignment_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_set_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry** envoy_api_v2_ClusterLoadAssignment_mutable_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry** envoy_api_v2_ClusterLoadAssignment_resize_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* envoy_api_v2_ClusterLoadAssignment_add_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* sub = (struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.Policy */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy *envoy_api_v2_ClusterLoadAssignment_Policy_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy *envoy_api_v2_ClusterLoadAssignment_Policy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_Policy *ret = envoy_api_v2_ClusterLoadAssignment_Policy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_Policy_serialize(const envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const* envoy_api_v2_ClusterLoadAssignment_Policy_drop_overloads(const envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t *len) { return (const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_ClusterLoadAssignment_Policy_overprovisioning_factor(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_ClusterLoadAssignment_Policy_endpoint_stale_after(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_ClusterLoadAssignment_Policy_disable_overprovisioning(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload** envoy_api_v2_ClusterLoadAssignment_Policy_mutable_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t *len) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload** envoy_api_v2_ClusterLoadAssignment_Policy_resize_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* envoy_api_v2_ClusterLoadAssignment_Policy_add_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_overprovisioning_factor(envoy_api_v2_ClusterLoadAssignment_Policy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_ClusterLoadAssignment_Policy_mutable_overprovisioning_factor(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_ClusterLoadAssignment_Policy_overprovisioning_factor(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_set_overprovisioning_factor(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_endpoint_stale_after(envoy_api_v2_ClusterLoadAssignment_Policy *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_ClusterLoadAssignment_Policy_mutable_endpoint_stale_after(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_ClusterLoadAssignment_Policy_endpoint_stale_after(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_set_endpoint_stale_after(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_disable_overprovisioning(envoy_api_v2_ClusterLoadAssignment_Policy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.Policy.DropOverload */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *ret = envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_serialize(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_category(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_category(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_drop_percentage(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_mutable_drop_percentage(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_drop_percentage(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.NamedEndpointsEntry */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *ret = envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_serialize(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_key(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_value(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_key(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_value(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, struct envoy_api_v2_endpoint_Endpoint* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_mutable_value(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint* sub = (struct envoy_api_v2_endpoint_Endpoint*)envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h
new file mode 100644
index 0000000..9dad1db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h
new file mode 100644
index 0000000..cb9a9b5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h	
@@ -0,0 +1,282 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_endpoint_Endpoint;
+struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig;
+struct envoy_api_v2_endpoint_LbEndpoint;
+struct envoy_api_v2_endpoint_LocalityLbEndpoints;
+typedef struct envoy_api_v2_endpoint_Endpoint envoy_api_v2_endpoint_Endpoint;
+typedef struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig envoy_api_v2_endpoint_Endpoint_HealthCheckConfig;
+typedef struct envoy_api_v2_endpoint_LbEndpoint envoy_api_v2_endpoint_LbEndpoint;
+typedef struct envoy_api_v2_endpoint_LocalityLbEndpoints envoy_api_v2_endpoint_LocalityLbEndpoints;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LbEndpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LocalityLbEndpoints_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Locality;
+struct envoy_api_v2_core_Metadata;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.endpoint.Endpoint */
+
+UPB_INLINE envoy_api_v2_endpoint_Endpoint *envoy_api_v2_endpoint_Endpoint_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_Endpoint *)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_Endpoint *envoy_api_v2_endpoint_Endpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_Endpoint *ret = envoy_api_v2_endpoint_Endpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_Endpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_Endpoint_serialize(const envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_Endpoint_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_Endpoint_address(const envoy_api_v2_endpoint_Endpoint *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* envoy_api_v2_endpoint_Endpoint_health_check_config(const envoy_api_v2_endpoint_Endpoint *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_set_address(envoy_api_v2_endpoint_Endpoint *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_Endpoint_mutable_address(envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_endpoint_Endpoint_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_Endpoint_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_set_health_check_config(envoy_api_v2_endpoint_Endpoint *msg, envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* envoy_api_v2_endpoint_Endpoint_mutable_health_check_config(envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* sub = (struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*)envoy_api_v2_endpoint_Endpoint_health_check_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_Endpoint_set_health_check_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.endpoint.Endpoint.HealthCheckConfig */
+
+UPB_INLINE envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *ret = envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_serialize(const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_port_value(const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_set_port_value(envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.endpoint.LbEndpoint */
+
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint *envoy_api_v2_endpoint_LbEndpoint_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LbEndpoint *)upb_msg_new(&envoy_api_v2_endpoint_LbEndpoint_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint *envoy_api_v2_endpoint_LbEndpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_LbEndpoint *ret = envoy_api_v2_endpoint_LbEndpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_LbEndpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_LbEndpoint_serialize(const envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_LbEndpoint_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_endpoint = 1,
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_endpoint_name = 5,
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_NOT_SET = 0
+} envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases;
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases envoy_api_v2_endpoint_LbEndpoint_host_identifier_case(const envoy_api_v2_endpoint_LbEndpoint* msg) { return (envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 40)); }
+
+UPB_INLINE bool envoy_api_v2_endpoint_LbEndpoint_has_endpoint(const envoy_api_v2_endpoint_LbEndpoint *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 40), 1); }
+UPB_INLINE const envoy_api_v2_endpoint_Endpoint* envoy_api_v2_endpoint_LbEndpoint_endpoint(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(16, 24), UPB_SIZE(24, 40), 1, NULL); }
+UPB_INLINE int32_t envoy_api_v2_endpoint_LbEndpoint_health_status(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_endpoint_LbEndpoint_metadata(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LbEndpoint_load_balancing_weight(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)); }
+UPB_INLINE bool envoy_api_v2_endpoint_LbEndpoint_has_endpoint_name(const envoy_api_v2_endpoint_LbEndpoint *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 40), 5); }
+UPB_INLINE upb_strview envoy_api_v2_endpoint_LbEndpoint_endpoint_name(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(16, 24), UPB_SIZE(24, 40), 5, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_endpoint(envoy_api_v2_endpoint_LbEndpoint *msg, envoy_api_v2_endpoint_Endpoint* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(16, 24), value, UPB_SIZE(24, 40), 1);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_endpoint_LbEndpoint_mutable_endpoint(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint* sub = (struct envoy_api_v2_endpoint_Endpoint*)envoy_api_v2_endpoint_LbEndpoint_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_health_status(envoy_api_v2_endpoint_LbEndpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_metadata(envoy_api_v2_endpoint_LbEndpoint *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_endpoint_LbEndpoint_mutable_metadata(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_endpoint_LbEndpoint_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_load_balancing_weight(envoy_api_v2_endpoint_LbEndpoint *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LbEndpoint_mutable_load_balancing_weight(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LbEndpoint_load_balancing_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_load_balancing_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_endpoint_name(envoy_api_v2_endpoint_LbEndpoint *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(16, 24), value, UPB_SIZE(24, 40), 5);
+}
+
+/* envoy.api.v2.endpoint.LocalityLbEndpoints */
+
+UPB_INLINE envoy_api_v2_endpoint_LocalityLbEndpoints *envoy_api_v2_endpoint_LocalityLbEndpoints_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LocalityLbEndpoints *)upb_msg_new(&envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_LocalityLbEndpoints *envoy_api_v2_endpoint_LocalityLbEndpoints_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_LocalityLbEndpoints *ret = envoy_api_v2_endpoint_LocalityLbEndpoints_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_LocalityLbEndpoints_serialize(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_LocalityLbEndpoints_locality(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Locality*, UPB_SIZE(4, 8)); }
+UPB_INLINE const envoy_api_v2_endpoint_LbEndpoint* const* envoy_api_v2_endpoint_LocalityLbEndpoints_lb_endpoints(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t *len) { return (const envoy_api_v2_endpoint_LbEndpoint* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE uint32_t envoy_api_v2_endpoint_LocalityLbEndpoints_priority(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_proximity(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_locality(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Locality*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_locality(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_endpoint_LocalityLbEndpoints_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint** envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_LbEndpoint**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint** envoy_api_v2_endpoint_LocalityLbEndpoints_resize_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LbEndpoint**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LbEndpoint* envoy_api_v2_endpoint_LocalityLbEndpoints_add_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_LbEndpoint* sub = (struct envoy_api_v2_endpoint_LbEndpoint*)upb_msg_new(&envoy_api_v2_endpoint_LbEndpoint_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_load_balancing_weight(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_load_balancing_weight(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_load_balancing_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_priority(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_proximity(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_proximity(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LocalityLbEndpoints_proximity(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_proximity(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h
new file mode 100644
index 0000000..9d90ec3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h	
@@ -0,0 +1,348 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_endpoint_UpstreamLocalityStats;
+struct envoy_api_v2_endpoint_UpstreamEndpointStats;
+struct envoy_api_v2_endpoint_EndpointLoadMetricStats;
+struct envoy_api_v2_endpoint_ClusterStats;
+struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests;
+typedef struct envoy_api_v2_endpoint_UpstreamLocalityStats envoy_api_v2_endpoint_UpstreamLocalityStats;
+typedef struct envoy_api_v2_endpoint_UpstreamEndpointStats envoy_api_v2_endpoint_UpstreamEndpointStats;
+typedef struct envoy_api_v2_endpoint_EndpointLoadMetricStats envoy_api_v2_endpoint_EndpointLoadMetricStats;
+typedef struct envoy_api_v2_endpoint_ClusterStats envoy_api_v2_endpoint_ClusterStats;
+typedef struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests envoy_api_v2_endpoint_ClusterStats_DroppedRequests;
+extern const upb_msglayout envoy_api_v2_endpoint_UpstreamLocalityStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_UpstreamEndpointStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Locality;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.endpoint.UpstreamLocalityStats */
+
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats *envoy_api_v2_endpoint_UpstreamLocalityStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats *)upb_msg_new(&envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats *envoy_api_v2_endpoint_UpstreamLocalityStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_UpstreamLocalityStats *ret = envoy_api_v2_endpoint_UpstreamLocalityStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_UpstreamLocalityStats_serialize(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_UpstreamLocalityStats_locality(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Locality*, UPB_SIZE(36, 40)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_successful_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_requests_in_progress(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_error_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_endpoint_EndpointLoadMetricStats* const* envoy_api_v2_endpoint_UpstreamLocalityStats_load_metric_stats(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_EndpointLoadMetricStats* const*)_upb_array_accessor(msg, UPB_SIZE(40, 48), len); }
+UPB_INLINE uint32_t envoy_api_v2_endpoint_UpstreamLocalityStats_priority(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(32, 32)); }
+UPB_INLINE const envoy_api_v2_endpoint_UpstreamEndpointStats* const* envoy_api_v2_endpoint_UpstreamLocalityStats_upstream_endpoint_stats(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_UpstreamEndpointStats* const*)_upb_array_accessor(msg, UPB_SIZE(44, 56), len); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_issued_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_locality(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, struct envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Locality*, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_locality(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_endpoint_UpstreamLocalityStats_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamLocalityStats_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_successful_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_requests_in_progress(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_error_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamLocalityStats_resize_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_EndpointLoadMetricStats* envoy_api_v2_endpoint_UpstreamLocalityStats_add_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_EndpointLoadMetricStats* sub = (struct envoy_api_v2_endpoint_EndpointLoadMetricStats*)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_priority(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats** envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 56), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats** envoy_api_v2_endpoint_UpstreamLocalityStats_resize_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_UpstreamEndpointStats* envoy_api_v2_endpoint_UpstreamLocalityStats_add_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_UpstreamEndpointStats* sub = (struct envoy_api_v2_endpoint_UpstreamEndpointStats*)upb_msg_new(&envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_issued_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.UpstreamEndpointStats */
+
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats *envoy_api_v2_endpoint_UpstreamEndpointStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats *)upb_msg_new(&envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats *envoy_api_v2_endpoint_UpstreamEndpointStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_UpstreamEndpointStats *ret = envoy_api_v2_endpoint_UpstreamEndpointStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_UpstreamEndpointStats_serialize(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_UpstreamEndpointStats_address(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(32, 32)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_successful_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_requests_in_progress(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_error_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_endpoint_EndpointLoadMetricStats* const* envoy_api_v2_endpoint_UpstreamEndpointStats_load_metric_stats(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_EndpointLoadMetricStats* const*)_upb_array_accessor(msg, UPB_SIZE(40, 48), len); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_endpoint_UpstreamEndpointStats_metadata(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(36, 40)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_issued_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_address(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_address(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_endpoint_UpstreamEndpointStats_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamEndpointStats_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_successful_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_requests_in_progress(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_error_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamEndpointStats_resize_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_EndpointLoadMetricStats* envoy_api_v2_endpoint_UpstreamEndpointStats_add_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_EndpointLoadMetricStats* sub = (struct envoy_api_v2_endpoint_EndpointLoadMetricStats*)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_metadata(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_metadata(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_endpoint_UpstreamEndpointStats_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamEndpointStats_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_issued_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.EndpointLoadMetricStats */
+
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats *envoy_api_v2_endpoint_EndpointLoadMetricStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats *)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats *envoy_api_v2_endpoint_EndpointLoadMetricStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_EndpointLoadMetricStats *ret = envoy_api_v2_endpoint_EndpointLoadMetricStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_EndpointLoadMetricStats_serialize(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_EndpointLoadMetricStats_metric_name(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_EndpointLoadMetricStats_num_requests_finished_with_metric(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE double envoy_api_v2_endpoint_EndpointLoadMetricStats_total_metric_value(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_metric_name(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_num_requests_finished_with_metric(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_total_metric_value(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.endpoint.ClusterStats */
+
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats *envoy_api_v2_endpoint_ClusterStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats *)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats *envoy_api_v2_endpoint_ClusterStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_ClusterStats *ret = envoy_api_v2_endpoint_ClusterStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_ClusterStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_ClusterStats_serialize(const envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_ClusterStats_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_cluster_name(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_api_v2_endpoint_UpstreamLocalityStats* const* envoy_api_v2_endpoint_ClusterStats_upstream_locality_stats(const envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_UpstreamLocalityStats* const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_ClusterStats_total_dropped_requests(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_endpoint_ClusterStats_load_report_interval(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_endpoint_ClusterStats_DroppedRequests* const* envoy_api_v2_endpoint_ClusterStats_dropped_requests(const envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_ClusterStats_DroppedRequests* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_cluster_service_name(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_cluster_name(envoy_api_v2_endpoint_ClusterStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats** envoy_api_v2_endpoint_ClusterStats_mutable_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats** envoy_api_v2_endpoint_ClusterStats_resize_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_UpstreamLocalityStats* envoy_api_v2_endpoint_ClusterStats_add_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_UpstreamLocalityStats* sub = (struct envoy_api_v2_endpoint_UpstreamLocalityStats*)upb_msg_new(&envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_total_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_load_report_interval(envoy_api_v2_endpoint_ClusterStats *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_endpoint_ClusterStats_mutable_load_report_interval(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_endpoint_ClusterStats_load_report_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_ClusterStats_set_load_report_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests** envoy_api_v2_endpoint_ClusterStats_mutable_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests** envoy_api_v2_endpoint_ClusterStats_resize_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests* envoy_api_v2_endpoint_ClusterStats_add_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests* sub = (struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests*)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_cluster_service_name(envoy_api_v2_endpoint_ClusterStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.ClusterStats.DroppedRequests */
+
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests *)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_ClusterStats_DroppedRequests *ret = envoy_api_v2_endpoint_ClusterStats_DroppedRequests_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_serialize(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_DroppedRequests_category(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_ClusterStats_DroppedRequests_dropped_count(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_category(envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_dropped_count(envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h
new file mode 100644
index 0000000..c373290
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/lds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LDS_PROTO_UPB_H_
+#define ENVOY_API_V2_LDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener.upb.h"
+#else
+  #include  "envoy/api/v2/listener.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_LdsDummy;
+typedef struct envoy_api_v2_LdsDummy envoy_api_v2_LdsDummy;
+extern const upb_msglayout envoy_api_v2_LdsDummy_msginit;
+
+
+/* envoy.api.v2.LdsDummy */
+
+UPB_INLINE envoy_api_v2_LdsDummy *envoy_api_v2_LdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_LdsDummy *)upb_msg_new(&envoy_api_v2_LdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LdsDummy *envoy_api_v2_LdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LdsDummy *ret = envoy_api_v2_LdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LdsDummy_serialize(const envoy_api_v2_LdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h
new file mode 100644
index 0000000..be53b58
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h	
@@ -0,0 +1,407 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_Listener;
+struct envoy_api_v2_Listener_DeprecatedV1;
+struct envoy_api_v2_Listener_ConnectionBalanceConfig;
+struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance;
+typedef struct envoy_api_v2_Listener envoy_api_v2_Listener;
+typedef struct envoy_api_v2_Listener_DeprecatedV1 envoy_api_v2_Listener_DeprecatedV1;
+typedef struct envoy_api_v2_Listener_ConnectionBalanceConfig envoy_api_v2_Listener_ConnectionBalanceConfig;
+typedef struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance;
+extern const upb_msglayout envoy_api_v2_Listener_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_DeprecatedV1_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_SocketOption;
+struct envoy_api_v2_listener_FilterChain;
+struct envoy_api_v2_listener_ListenerFilter;
+struct envoy_api_v2_listener_UdpListenerConfig;
+struct envoy_config_listener_v2_ApiListener;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChain_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilter_msginit;
+extern const upb_msglayout envoy_api_v2_listener_UdpListenerConfig_msginit;
+extern const upb_msglayout envoy_config_listener_v2_ApiListener_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_Listener_DEFAULT = 0,
+  envoy_api_v2_Listener_MODIFY_ONLY = 1
+} envoy_api_v2_Listener_DrainType;
+
+
+/* envoy.api.v2.Listener */
+
+UPB_INLINE envoy_api_v2_Listener *envoy_api_v2_Listener_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener *)upb_msg_new(&envoy_api_v2_Listener_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener *envoy_api_v2_Listener_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener *ret = envoy_api_v2_Listener_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_serialize(const envoy_api_v2_Listener *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Listener_name(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_Listener_address(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(28, 40)); }
+UPB_INLINE const struct envoy_api_v2_listener_FilterChain* const* envoy_api_v2_Listener_filter_chains(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_listener_FilterChain* const*)_upb_array_accessor(msg, UPB_SIZE(76, 136), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_use_original_dst(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(32, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Listener_per_connection_buffer_limit_bytes(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 56)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_Listener_metadata(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(40, 64)); }
+UPB_INLINE const envoy_api_v2_Listener_DeprecatedV1* envoy_api_v2_Listener_deprecated_v1(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Listener_DeprecatedV1*, UPB_SIZE(44, 72)); }
+UPB_INLINE int32_t envoy_api_v2_Listener_drain_type(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_listener_ListenerFilter* const* envoy_api_v2_Listener_listener_filters(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_listener_ListenerFilter* const*)_upb_array_accessor(msg, UPB_SIZE(80, 144), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_transparent(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(48, 80)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_freebind(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(52, 88)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Listener_tcp_fast_open_queue_length(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 96)); }
+UPB_INLINE const struct envoy_api_v2_core_SocketOption* const* envoy_api_v2_Listener_socket_options(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_core_SocketOption* const*)_upb_array_accessor(msg, UPB_SIZE(84, 152), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Listener_listener_filters_timeout(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 104)); }
+UPB_INLINE int32_t envoy_api_v2_Listener_traffic_direction(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_Listener_continue_on_listener_filters_timeout(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE const struct envoy_api_v2_listener_UdpListenerConfig* envoy_api_v2_Listener_udp_listener_config(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_listener_UdpListenerConfig*, UPB_SIZE(64, 112)); }
+UPB_INLINE const struct envoy_config_listener_v2_ApiListener* envoy_api_v2_Listener_api_listener(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_config_listener_v2_ApiListener*, UPB_SIZE(68, 120)); }
+UPB_INLINE const envoy_api_v2_Listener_ConnectionBalanceConfig* envoy_api_v2_Listener_connection_balance_config(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Listener_ConnectionBalanceConfig*, UPB_SIZE(72, 128)); }
+UPB_INLINE bool envoy_api_v2_Listener_reuse_port(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)); }
+
+UPB_INLINE void envoy_api_v2_Listener_set_name(envoy_api_v2_Listener *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_address(envoy_api_v2_Listener *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(28, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Listener_mutable_address(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_Listener_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain** envoy_api_v2_Listener_mutable_filter_chains(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_listener_FilterChain**)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 136), len);
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain** envoy_api_v2_Listener_resize_filter_chains(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_listener_FilterChain**)_upb_array_resize_accessor(msg, UPB_SIZE(76, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain* envoy_api_v2_Listener_add_filter_chains(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_FilterChain* sub = (struct envoy_api_v2_listener_FilterChain*)upb_msg_new(&envoy_api_v2_listener_FilterChain_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_use_original_dst(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(32, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_use_original_dst(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_use_original_dst(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_use_original_dst(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_per_connection_buffer_limit_bytes(envoy_api_v2_Listener *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Listener_mutable_per_connection_buffer_limit_bytes(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Listener_per_connection_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_per_connection_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_metadata(envoy_api_v2_Listener *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(40, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_Listener_mutable_metadata(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_Listener_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_deprecated_v1(envoy_api_v2_Listener *msg, envoy_api_v2_Listener_DeprecatedV1* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Listener_DeprecatedV1*, UPB_SIZE(44, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Listener_DeprecatedV1* envoy_api_v2_Listener_mutable_deprecated_v1(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_DeprecatedV1* sub = (struct envoy_api_v2_Listener_DeprecatedV1*)envoy_api_v2_Listener_deprecated_v1(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_DeprecatedV1*)upb_msg_new(&envoy_api_v2_Listener_DeprecatedV1_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_deprecated_v1(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_drain_type(envoy_api_v2_Listener *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter** envoy_api_v2_Listener_mutable_listener_filters(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_listener_ListenerFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(80, 144), len);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter** envoy_api_v2_Listener_resize_listener_filters(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_listener_ListenerFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(80, 144), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter* envoy_api_v2_Listener_add_listener_filters(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilter* sub = (struct envoy_api_v2_listener_ListenerFilter*)upb_msg_new(&envoy_api_v2_listener_ListenerFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(80, 144), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_transparent(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(48, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_transparent(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_transparent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_transparent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_freebind(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(52, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_freebind(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_freebind(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_freebind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_tcp_fast_open_queue_length(envoy_api_v2_Listener *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Listener_mutable_tcp_fast_open_queue_length(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Listener_tcp_fast_open_queue_length(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_tcp_fast_open_queue_length(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_Listener_mutable_socket_options(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(84, 152), len);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_Listener_resize_socket_options(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_resize_accessor(msg, UPB_SIZE(84, 152), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption* envoy_api_v2_Listener_add_socket_options(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketOption* sub = (struct envoy_api_v2_core_SocketOption*)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(84, 152), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_listener_filters_timeout(envoy_api_v2_Listener *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Listener_mutable_listener_filters_timeout(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Listener_listener_filters_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_listener_filters_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_traffic_direction(envoy_api_v2_Listener *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_continue_on_listener_filters_timeout(envoy_api_v2_Listener *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_udp_listener_config(envoy_api_v2_Listener *msg, struct envoy_api_v2_listener_UdpListenerConfig* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_listener_UdpListenerConfig*, UPB_SIZE(64, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_UdpListenerConfig* envoy_api_v2_Listener_mutable_udp_listener_config(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_UdpListenerConfig* sub = (struct envoy_api_v2_listener_UdpListenerConfig*)envoy_api_v2_Listener_udp_listener_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_UdpListenerConfig*)upb_msg_new(&envoy_api_v2_listener_UdpListenerConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_udp_listener_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_api_listener(envoy_api_v2_Listener *msg, struct envoy_config_listener_v2_ApiListener* value) {
+  UPB_FIELD_AT(msg, struct envoy_config_listener_v2_ApiListener*, UPB_SIZE(68, 120)) = value;
+}
+UPB_INLINE struct envoy_config_listener_v2_ApiListener* envoy_api_v2_Listener_mutable_api_listener(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_config_listener_v2_ApiListener* sub = (struct envoy_config_listener_v2_ApiListener*)envoy_api_v2_Listener_api_listener(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_listener_v2_ApiListener*)upb_msg_new(&envoy_config_listener_v2_ApiListener_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_api_listener(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_connection_balance_config(envoy_api_v2_Listener *msg, envoy_api_v2_Listener_ConnectionBalanceConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Listener_ConnectionBalanceConfig*, UPB_SIZE(72, 128)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Listener_ConnectionBalanceConfig* envoy_api_v2_Listener_mutable_connection_balance_config(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_ConnectionBalanceConfig* sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig*)envoy_api_v2_Listener_connection_balance_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig*)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_connection_balance_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_reuse_port(envoy_api_v2_Listener *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)) = value;
+}
+
+/* envoy.api.v2.Listener.DeprecatedV1 */
+
+UPB_INLINE envoy_api_v2_Listener_DeprecatedV1 *envoy_api_v2_Listener_DeprecatedV1_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_DeprecatedV1 *)upb_msg_new(&envoy_api_v2_Listener_DeprecatedV1_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_DeprecatedV1 *envoy_api_v2_Listener_DeprecatedV1_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_DeprecatedV1 *ret = envoy_api_v2_Listener_DeprecatedV1_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_DeprecatedV1_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_DeprecatedV1_serialize(const envoy_api_v2_Listener_DeprecatedV1 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_DeprecatedV1_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_DeprecatedV1_bind_to_port(const envoy_api_v2_Listener_DeprecatedV1 *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Listener_DeprecatedV1_set_bind_to_port(envoy_api_v2_Listener_DeprecatedV1 *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_DeprecatedV1_mutable_bind_to_port(envoy_api_v2_Listener_DeprecatedV1 *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_DeprecatedV1_bind_to_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_DeprecatedV1_set_bind_to_port(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Listener.ConnectionBalanceConfig */
+
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig *envoy_api_v2_Listener_ConnectionBalanceConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_ConnectionBalanceConfig *)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig *envoy_api_v2_Listener_ConnectionBalanceConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_ConnectionBalanceConfig *ret = envoy_api_v2_Listener_ConnectionBalanceConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_ConnectionBalanceConfig_serialize(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_exact_balance = 1,
+  envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_NOT_SET = 0
+} envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases;
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_case(const envoy_api_v2_Listener_ConnectionBalanceConfig* msg) { return (envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_Listener_ConnectionBalanceConfig_has_exact_balance(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* envoy_api_v2_Listener_ConnectionBalanceConfig_exact_balance(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_api_v2_Listener_ConnectionBalanceConfig_set_exact_balance(envoy_api_v2_Listener_ConnectionBalanceConfig *msg, envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* envoy_api_v2_Listener_ConnectionBalanceConfig_mutable_exact_balance(envoy_api_v2_Listener_ConnectionBalanceConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*)envoy_api_v2_Listener_ConnectionBalanceConfig_exact_balance(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_ConnectionBalanceConfig_set_exact_balance(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Listener.ConnectionBalanceConfig.ExactBalance */
+
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *ret = envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_serialize(const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h
new file mode 100644
index 0000000..9f7bd53
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h
new file mode 100644
index 0000000..ee75ed4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h	
@@ -0,0 +1,551 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_listener_Filter;
+struct envoy_api_v2_listener_FilterChainMatch;
+struct envoy_api_v2_listener_FilterChain;
+struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate;
+struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet;
+struct envoy_api_v2_listener_ListenerFilter;
+typedef struct envoy_api_v2_listener_Filter envoy_api_v2_listener_Filter;
+typedef struct envoy_api_v2_listener_FilterChainMatch envoy_api_v2_listener_FilterChainMatch;
+typedef struct envoy_api_v2_listener_FilterChain envoy_api_v2_listener_FilterChain;
+typedef struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate envoy_api_v2_listener_ListenerFilterChainMatchPredicate;
+typedef struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet;
+typedef struct envoy_api_v2_listener_ListenerFilter envoy_api_v2_listener_ListenerFilter;
+extern const upb_msglayout envoy_api_v2_listener_Filter_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChainMatch_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChain_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilter_msginit;
+struct envoy_api_v2_auth_DownstreamTlsContext;
+struct envoy_api_v2_core_CidrRange;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_type_Int32Range;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_auth_DownstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_core_CidrRange_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_type_Int32Range_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_listener_FilterChainMatch_ANY = 0,
+  envoy_api_v2_listener_FilterChainMatch_LOCAL = 1,
+  envoy_api_v2_listener_FilterChainMatch_EXTERNAL = 2
+} envoy_api_v2_listener_FilterChainMatch_ConnectionSourceType;
+
+
+/* envoy.api.v2.listener.Filter */
+
+UPB_INLINE envoy_api_v2_listener_Filter *envoy_api_v2_listener_Filter_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_Filter *)upb_msg_new(&envoy_api_v2_listener_Filter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_Filter *envoy_api_v2_listener_Filter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_Filter *ret = envoy_api_v2_listener_Filter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_Filter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_Filter_serialize(const envoy_api_v2_listener_Filter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_Filter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_Filter_config_type_config = 2,
+  envoy_api_v2_listener_Filter_config_type_typed_config = 4,
+  envoy_api_v2_listener_Filter_config_type_NOT_SET = 0
+} envoy_api_v2_listener_Filter_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_Filter_config_type_oneofcases envoy_api_v2_listener_Filter_config_type_case(const envoy_api_v2_listener_Filter* msg) { return (envoy_api_v2_listener_Filter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_Filter_name(const envoy_api_v2_listener_Filter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_Filter_has_config(const envoy_api_v2_listener_Filter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_Filter_config(const envoy_api_v2_listener_Filter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_Filter_has_typed_config(const envoy_api_v2_listener_Filter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_Filter_typed_config(const envoy_api_v2_listener_Filter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_Filter_set_name(envoy_api_v2_listener_Filter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_Filter_set_config(envoy_api_v2_listener_Filter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_Filter_mutable_config(envoy_api_v2_listener_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_Filter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_Filter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_Filter_set_typed_config(envoy_api_v2_listener_Filter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_Filter_mutable_typed_config(envoy_api_v2_listener_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_Filter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_Filter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.FilterChainMatch */
+
+UPB_INLINE envoy_api_v2_listener_FilterChainMatch *envoy_api_v2_listener_FilterChainMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_FilterChainMatch *)upb_msg_new(&envoy_api_v2_listener_FilterChainMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_FilterChainMatch *envoy_api_v2_listener_FilterChainMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_FilterChainMatch *ret = envoy_api_v2_listener_FilterChainMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_FilterChainMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_FilterChainMatch_serialize(const envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_FilterChainMatch_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_CidrRange* const* envoy_api_v2_listener_FilterChainMatch_prefix_ranges(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (const struct envoy_api_v2_core_CidrRange* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChainMatch_address_suffix(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_suffix_len(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_CidrRange* const* envoy_api_v2_listener_FilterChainMatch_source_prefix_ranges(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (const struct envoy_api_v2_core_CidrRange* const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE uint32_t const* envoy_api_v2_listener_FilterChainMatch_source_ports(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_destination_port(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChainMatch_transport_protocol(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE upb_strview const* envoy_api_v2_listener_FilterChainMatch_application_protocols(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_listener_FilterChainMatch_server_names(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE int32_t envoy_api_v2_listener_FilterChainMatch_source_type(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_mutable_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_resize_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange* envoy_api_v2_listener_FilterChainMatch_add_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_CidrRange* sub = (struct envoy_api_v2_core_CidrRange*)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_address_suffix(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_suffix_len(envoy_api_v2_listener_FilterChainMatch *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_mutable_suffix_len(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_listener_FilterChainMatch_suffix_len(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChainMatch_set_suffix_len(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_mutable_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_resize_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange* envoy_api_v2_listener_FilterChainMatch_add_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_CidrRange* sub = (struct envoy_api_v2_core_CidrRange*)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE uint32_t* envoy_api_v2_listener_FilterChainMatch_mutable_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE uint32_t* envoy_api_v2_listener_FilterChainMatch_resize_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_destination_port(envoy_api_v2_listener_FilterChainMatch *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_mutable_destination_port(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_listener_FilterChainMatch_destination_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChainMatch_set_destination_port(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_transport_protocol(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_mutable_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_resize_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_mutable_server_names(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_resize_server_names(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_server_names(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_source_type(envoy_api_v2_listener_FilterChainMatch *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.listener.FilterChain */
+
+UPB_INLINE envoy_api_v2_listener_FilterChain *envoy_api_v2_listener_FilterChain_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_FilterChain *)upb_msg_new(&envoy_api_v2_listener_FilterChain_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_FilterChain *envoy_api_v2_listener_FilterChain_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_FilterChain *ret = envoy_api_v2_listener_FilterChain_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_FilterChain_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_FilterChain_serialize(const envoy_api_v2_listener_FilterChain *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_FilterChain_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_listener_FilterChainMatch* envoy_api_v2_listener_FilterChain_filter_chain_match(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_listener_FilterChainMatch*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_auth_DownstreamTlsContext* envoy_api_v2_listener_FilterChain_tls_context(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_auth_DownstreamTlsContext*, UPB_SIZE(12, 24)); }
+UPB_INLINE const envoy_api_v2_listener_Filter* const* envoy_api_v2_listener_FilterChain_filters(const envoy_api_v2_listener_FilterChain *msg, size_t *len) { return (const envoy_api_v2_listener_Filter* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_listener_FilterChain_use_proxy_proto(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_listener_FilterChain_metadata(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_listener_FilterChain_transport_socket(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChain_name(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_filter_chain_match(envoy_api_v2_listener_FilterChain *msg, envoy_api_v2_listener_FilterChainMatch* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_listener_FilterChainMatch*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChainMatch* envoy_api_v2_listener_FilterChain_mutable_filter_chain_match(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_FilterChainMatch* sub = (struct envoy_api_v2_listener_FilterChainMatch*)envoy_api_v2_listener_FilterChain_filter_chain_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_FilterChainMatch*)upb_msg_new(&envoy_api_v2_listener_FilterChainMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_filter_chain_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_tls_context(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_auth_DownstreamTlsContext* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_auth_DownstreamTlsContext*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_DownstreamTlsContext* envoy_api_v2_listener_FilterChain_mutable_tls_context(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_DownstreamTlsContext* sub = (struct envoy_api_v2_auth_DownstreamTlsContext*)envoy_api_v2_listener_FilterChain_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_DownstreamTlsContext*)upb_msg_new(&envoy_api_v2_auth_DownstreamTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_listener_Filter** envoy_api_v2_listener_FilterChain_mutable_filters(envoy_api_v2_listener_FilterChain *msg, size_t *len) {
+  return (envoy_api_v2_listener_Filter**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_listener_Filter** envoy_api_v2_listener_FilterChain_resize_filters(envoy_api_v2_listener_FilterChain *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_listener_Filter**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_Filter* envoy_api_v2_listener_FilterChain_add_filters(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_Filter* sub = (struct envoy_api_v2_listener_Filter*)upb_msg_new(&envoy_api_v2_listener_Filter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_use_proxy_proto(envoy_api_v2_listener_FilterChain *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_listener_FilterChain_mutable_use_proxy_proto(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_listener_FilterChain_use_proxy_proto(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_use_proxy_proto(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_metadata(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_listener_FilterChain_mutable_metadata(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_listener_FilterChain_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_transport_socket(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_listener_FilterChain_mutable_transport_socket(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_listener_FilterChain_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_name(envoy_api_v2_listener_FilterChain *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.listener.ListenerFilterChainMatchPredicate */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate *)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate *ret = envoy_api_v2_listener_ListenerFilterChainMatchPredicate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_serialize(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_or_match = 1,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_and_match = 2,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_not_match = 3,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_any_match = 4,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_destination_port_range = 5,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_NOT_SET = 0
+} envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases;
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_case(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* msg) { return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_or_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_or_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_and_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_and_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_not_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_not_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_any_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_any_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, false); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_destination_port_range(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const struct envoy_type_Int32Range* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_destination_port_range(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_Int32Range*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_or_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_or_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_or_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_or_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_and_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_and_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_and_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_and_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_not_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_not_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_not_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_not_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_any_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_destination_port_range(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, struct envoy_type_Int32Range* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_Int32Range*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_type_Int32Range* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_destination_port_range(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_type_Int32Range* sub = (struct envoy_type_Int32Range*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_destination_port_range(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Int32Range*)upb_msg_new(&envoy_type_Int32Range_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_destination_port_range(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.ListenerFilterChainMatchPredicate.MatchSet */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *ret = envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_serialize(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* const* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_rules(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t *len) { return (const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate** envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_mutable_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t *len) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate** envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_resize_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_add_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.listener.ListenerFilter */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilter *envoy_api_v2_listener_ListenerFilter_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilter *)upb_msg_new(&envoy_api_v2_listener_ListenerFilter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilter *envoy_api_v2_listener_ListenerFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilter *ret = envoy_api_v2_listener_ListenerFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilter_serialize(const envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_ListenerFilter_config_type_config = 2,
+  envoy_api_v2_listener_ListenerFilter_config_type_typed_config = 3,
+  envoy_api_v2_listener_ListenerFilter_config_type_NOT_SET = 0
+} envoy_api_v2_listener_ListenerFilter_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_ListenerFilter_config_type_oneofcases envoy_api_v2_listener_ListenerFilter_config_type_case(const envoy_api_v2_listener_ListenerFilter* msg) { return (envoy_api_v2_listener_ListenerFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_ListenerFilter_name(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilter_has_config(const envoy_api_v2_listener_ListenerFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_ListenerFilter_config(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilter_has_typed_config(const envoy_api_v2_listener_ListenerFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_ListenerFilter_typed_config(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilter_filter_disabled(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_name(envoy_api_v2_listener_ListenerFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_config(envoy_api_v2_listener_ListenerFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_ListenerFilter_mutable_config(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_ListenerFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_typed_config(envoy_api_v2_listener_ListenerFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_ListenerFilter_mutable_typed_config(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_ListenerFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_filter_disabled(envoy_api_v2_listener_ListenerFilter *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilter_mutable_filter_disabled(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)envoy_api_v2_listener_ListenerFilter_filter_disabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_filter_disabled(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h
new file mode 100644
index 0000000..80f4a7e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h	
@@ -0,0 +1,136 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/udp_listener_config.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_listener_UdpListenerConfig;
+struct envoy_api_v2_listener_ActiveRawUdpListenerConfig;
+typedef struct envoy_api_v2_listener_UdpListenerConfig envoy_api_v2_listener_UdpListenerConfig;
+typedef struct envoy_api_v2_listener_ActiveRawUdpListenerConfig envoy_api_v2_listener_ActiveRawUdpListenerConfig;
+extern const upb_msglayout envoy_api_v2_listener_UdpListenerConfig_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit;
+struct google_protobuf_Any;
+struct google_protobuf_Struct;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.listener.UdpListenerConfig */
+
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig *envoy_api_v2_listener_UdpListenerConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_UdpListenerConfig *)upb_msg_new(&envoy_api_v2_listener_UdpListenerConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig *envoy_api_v2_listener_UdpListenerConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_UdpListenerConfig *ret = envoy_api_v2_listener_UdpListenerConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_UdpListenerConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_UdpListenerConfig_serialize(const envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_UdpListenerConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_UdpListenerConfig_config_type_config = 2,
+  envoy_api_v2_listener_UdpListenerConfig_config_type_typed_config = 3,
+  envoy_api_v2_listener_UdpListenerConfig_config_type_NOT_SET = 0
+} envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases envoy_api_v2_listener_UdpListenerConfig_config_type_case(const envoy_api_v2_listener_UdpListenerConfig* msg) { return (envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_UdpListenerConfig_udp_listener_name(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_UdpListenerConfig_has_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_UdpListenerConfig_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_UdpListenerConfig_has_typed_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_UdpListenerConfig_typed_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_udp_listener_name(envoy_api_v2_listener_UdpListenerConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_config(envoy_api_v2_listener_UdpListenerConfig *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_UdpListenerConfig_mutable_config(envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_UdpListenerConfig_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_UdpListenerConfig_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_typed_config(envoy_api_v2_listener_UdpListenerConfig *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_UdpListenerConfig_mutable_typed_config(envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_UdpListenerConfig_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_UdpListenerConfig_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.ActiveRawUdpListenerConfig */
+
+UPB_INLINE envoy_api_v2_listener_ActiveRawUdpListenerConfig *envoy_api_v2_listener_ActiveRawUdpListenerConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ActiveRawUdpListenerConfig *)upb_msg_new(&envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ActiveRawUdpListenerConfig *envoy_api_v2_listener_ActiveRawUdpListenerConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ActiveRawUdpListenerConfig *ret = envoy_api_v2_listener_ActiveRawUdpListenerConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ActiveRawUdpListenerConfig_serialize(const envoy_api_v2_listener_ActiveRawUdpListenerConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h
new file mode 100644
index 0000000..c4ee624
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/rds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_RDS_PROTO_UPB_H_
+#define ENVOY_API_V2_RDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route.upb.h"
+#else
+  #include  "envoy/api/v2/route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_RdsDummy;
+typedef struct envoy_api_v2_RdsDummy envoy_api_v2_RdsDummy;
+extern const upb_msglayout envoy_api_v2_RdsDummy_msginit;
+
+
+/* envoy.api.v2.RdsDummy */
+
+UPB_INLINE envoy_api_v2_RdsDummy *envoy_api_v2_RdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_RdsDummy *)upb_msg_new(&envoy_api_v2_RdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_RdsDummy *envoy_api_v2_RdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_RdsDummy *ret = envoy_api_v2_RdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_RdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_RdsDummy_serialize(const envoy_api_v2_RdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_RdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_RDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route.upb.h
new file mode 100644
index 0000000..b103a1f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route.upb.h	
@@ -0,0 +1,223 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_RouteConfiguration;
+struct envoy_api_v2_Vhds;
+typedef struct envoy_api_v2_RouteConfiguration envoy_api_v2_RouteConfiguration;
+typedef struct envoy_api_v2_Vhds envoy_api_v2_Vhds;
+extern const upb_msglayout envoy_api_v2_RouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_Vhds_msginit;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_route_VirtualHost;
+struct google_protobuf_BoolValue;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+
+
+/* envoy.api.v2.RouteConfiguration */
+
+UPB_INLINE envoy_api_v2_RouteConfiguration *envoy_api_v2_RouteConfiguration_new(upb_arena *arena) {
+  return (envoy_api_v2_RouteConfiguration *)upb_msg_new(&envoy_api_v2_RouteConfiguration_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_RouteConfiguration *envoy_api_v2_RouteConfiguration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_RouteConfiguration *ret = envoy_api_v2_RouteConfiguration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_RouteConfiguration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_RouteConfiguration_serialize(const envoy_api_v2_RouteConfiguration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_RouteConfiguration_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_RouteConfiguration_name(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_route_VirtualHost* const* envoy_api_v2_RouteConfiguration_virtual_hosts(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_route_VirtualHost* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_internal_only_headers(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_RouteConfiguration_response_headers_to_add(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_response_headers_to_remove(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_RouteConfiguration_request_headers_to_add(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_RouteConfiguration_validate_clusters(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_request_headers_to_remove(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE const envoy_api_v2_Vhds* envoy_api_v2_RouteConfiguration_vhds(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Vhds*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_most_specific_header_mutations_wins(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_name(envoy_api_v2_RouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost** envoy_api_v2_RouteConfiguration_mutable_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_route_VirtualHost**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost** envoy_api_v2_RouteConfiguration_resize_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_route_VirtualHost**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost* envoy_api_v2_RouteConfiguration_add_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost* sub = (struct envoy_api_v2_route_VirtualHost*)upb_msg_new(&envoy_api_v2_route_VirtualHost_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_mutable_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_resize_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_RouteConfiguration_add_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_mutable_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_resize_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_RouteConfiguration_add_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_validate_clusters(envoy_api_v2_RouteConfiguration *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_RouteConfiguration_mutable_validate_clusters(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_RouteConfiguration_validate_clusters(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_RouteConfiguration_set_validate_clusters(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_vhds(envoy_api_v2_RouteConfiguration *msg, envoy_api_v2_Vhds* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Vhds*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Vhds* envoy_api_v2_RouteConfiguration_mutable_vhds(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_Vhds* sub = (struct envoy_api_v2_Vhds*)envoy_api_v2_RouteConfiguration_vhds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Vhds*)upb_msg_new(&envoy_api_v2_Vhds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_RouteConfiguration_set_vhds(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_most_specific_header_mutations_wins(envoy_api_v2_RouteConfiguration *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Vhds */
+
+UPB_INLINE envoy_api_v2_Vhds *envoy_api_v2_Vhds_new(upb_arena *arena) {
+  return (envoy_api_v2_Vhds *)upb_msg_new(&envoy_api_v2_Vhds_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Vhds *envoy_api_v2_Vhds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Vhds *ret = envoy_api_v2_Vhds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Vhds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Vhds_serialize(const envoy_api_v2_Vhds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Vhds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Vhds_config_source(const envoy_api_v2_Vhds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Vhds_set_config_source(envoy_api_v2_Vhds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Vhds_mutable_config_source(envoy_api_v2_Vhds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Vhds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Vhds_set_config_source(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h
new file mode 100644
index 0000000..88ae59f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h
new file mode 100644
index 0000000..020c9ef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h	
@@ -0,0 +1,2960 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_route_VirtualHost;
+struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry;
+struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_FilterAction;
+struct envoy_api_v2_route_Route;
+struct envoy_api_v2_route_Route_PerFilterConfigEntry;
+struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_WeightedCluster;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_RouteMatch;
+struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions;
+struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions;
+struct envoy_api_v2_route_CorsPolicy;
+struct envoy_api_v2_route_RouteAction;
+struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy;
+struct envoy_api_v2_route_RouteAction_HashPolicy;
+struct envoy_api_v2_route_RouteAction_HashPolicy_Header;
+struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie;
+struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties;
+struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter;
+struct envoy_api_v2_route_RouteAction_UpgradeConfig;
+struct envoy_api_v2_route_RetryPolicy;
+struct envoy_api_v2_route_RetryPolicy_RetryPriority;
+struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate;
+struct envoy_api_v2_route_RetryPolicy_RetryBackOff;
+struct envoy_api_v2_route_HedgePolicy;
+struct envoy_api_v2_route_RedirectAction;
+struct envoy_api_v2_route_DirectResponseAction;
+struct envoy_api_v2_route_Decorator;
+struct envoy_api_v2_route_Tracing;
+struct envoy_api_v2_route_VirtualCluster;
+struct envoy_api_v2_route_RateLimit;
+struct envoy_api_v2_route_RateLimit_Action;
+struct envoy_api_v2_route_RateLimit_Action_SourceCluster;
+struct envoy_api_v2_route_RateLimit_Action_DestinationCluster;
+struct envoy_api_v2_route_RateLimit_Action_RequestHeaders;
+struct envoy_api_v2_route_RateLimit_Action_RemoteAddress;
+struct envoy_api_v2_route_RateLimit_Action_GenericKey;
+struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch;
+struct envoy_api_v2_route_HeaderMatcher;
+struct envoy_api_v2_route_QueryParameterMatcher;
+typedef struct envoy_api_v2_route_VirtualHost envoy_api_v2_route_VirtualHost;
+typedef struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry envoy_api_v2_route_VirtualHost_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_FilterAction envoy_api_v2_route_FilterAction;
+typedef struct envoy_api_v2_route_Route envoy_api_v2_route_Route;
+typedef struct envoy_api_v2_route_Route_PerFilterConfigEntry envoy_api_v2_route_Route_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry envoy_api_v2_route_Route_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_WeightedCluster envoy_api_v2_route_WeightedCluster;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight envoy_api_v2_route_WeightedCluster_ClusterWeight;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_RouteMatch envoy_api_v2_route_RouteMatch;
+typedef struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions;
+typedef struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions envoy_api_v2_route_RouteMatch_TlsContextMatchOptions;
+typedef struct envoy_api_v2_route_CorsPolicy envoy_api_v2_route_CorsPolicy;
+typedef struct envoy_api_v2_route_RouteAction envoy_api_v2_route_RouteAction;
+typedef struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy envoy_api_v2_route_RouteAction_RequestMirrorPolicy;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy envoy_api_v2_route_RouteAction_HashPolicy;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_Header envoy_api_v2_route_RouteAction_HashPolicy_Header;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie envoy_api_v2_route_RouteAction_HashPolicy_Cookie;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter;
+typedef struct envoy_api_v2_route_RouteAction_UpgradeConfig envoy_api_v2_route_RouteAction_UpgradeConfig;
+typedef struct envoy_api_v2_route_RetryPolicy envoy_api_v2_route_RetryPolicy;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryPriority envoy_api_v2_route_RetryPolicy_RetryPriority;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate envoy_api_v2_route_RetryPolicy_RetryHostPredicate;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryBackOff envoy_api_v2_route_RetryPolicy_RetryBackOff;
+typedef struct envoy_api_v2_route_HedgePolicy envoy_api_v2_route_HedgePolicy;
+typedef struct envoy_api_v2_route_RedirectAction envoy_api_v2_route_RedirectAction;
+typedef struct envoy_api_v2_route_DirectResponseAction envoy_api_v2_route_DirectResponseAction;
+typedef struct envoy_api_v2_route_Decorator envoy_api_v2_route_Decorator;
+typedef struct envoy_api_v2_route_Tracing envoy_api_v2_route_Tracing;
+typedef struct envoy_api_v2_route_VirtualCluster envoy_api_v2_route_VirtualCluster;
+typedef struct envoy_api_v2_route_RateLimit envoy_api_v2_route_RateLimit;
+typedef struct envoy_api_v2_route_RateLimit_Action envoy_api_v2_route_RateLimit_Action;
+typedef struct envoy_api_v2_route_RateLimit_Action_SourceCluster envoy_api_v2_route_RateLimit_Action_SourceCluster;
+typedef struct envoy_api_v2_route_RateLimit_Action_DestinationCluster envoy_api_v2_route_RateLimit_Action_DestinationCluster;
+typedef struct envoy_api_v2_route_RateLimit_Action_RequestHeaders envoy_api_v2_route_RateLimit_Action_RequestHeaders;
+typedef struct envoy_api_v2_route_RateLimit_Action_RemoteAddress envoy_api_v2_route_RateLimit_Action_RemoteAddress;
+typedef struct envoy_api_v2_route_RateLimit_Action_GenericKey envoy_api_v2_route_RateLimit_Action_GenericKey;
+typedef struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch envoy_api_v2_route_RateLimit_Action_HeaderValueMatch;
+typedef struct envoy_api_v2_route_HeaderMatcher envoy_api_v2_route_HeaderMatcher;
+typedef struct envoy_api_v2_route_QueryParameterMatcher envoy_api_v2_route_QueryParameterMatcher;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_FilterAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit;
+extern const upb_msglayout envoy_api_v2_route_CorsPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_UpgradeConfig_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryPriority_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit;
+extern const upb_msglayout envoy_api_v2_route_HedgePolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RedirectAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_DirectResponseAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_Decorator_msginit;
+extern const upb_msglayout envoy_api_v2_route_Tracing_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_GenericKey_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit;
+extern const upb_msglayout envoy_api_v2_route_HeaderMatcher_msginit;
+extern const upb_msglayout envoy_api_v2_route_QueryParameterMatcher_msginit;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_RuntimeFractionalPercent;
+struct envoy_type_FractionalPercent;
+struct envoy_type_Int64Range;
+struct envoy_type_matcher_RegexMatcher;
+struct envoy_type_matcher_StringMatcher;
+struct envoy_type_tracing_v2_CustomTag;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFractionalPercent_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_MOVED_PERMANENTLY = 0,
+  envoy_api_v2_route_RedirectAction_FOUND = 1,
+  envoy_api_v2_route_RedirectAction_SEE_OTHER = 2,
+  envoy_api_v2_route_RedirectAction_TEMPORARY_REDIRECT = 3,
+  envoy_api_v2_route_RedirectAction_PERMANENT_REDIRECT = 4
+} envoy_api_v2_route_RedirectAction_RedirectResponseCode;
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_SERVICE_UNAVAILABLE = 0,
+  envoy_api_v2_route_RouteAction_NOT_FOUND = 1
+} envoy_api_v2_route_RouteAction_ClusterNotFoundResponseCode;
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_PASS_THROUGH_INTERNAL_REDIRECT = 0,
+  envoy_api_v2_route_RouteAction_HANDLE_INTERNAL_REDIRECT = 1
+} envoy_api_v2_route_RouteAction_InternalRedirectAction;
+
+typedef enum {
+  envoy_api_v2_route_VirtualHost_NONE = 0,
+  envoy_api_v2_route_VirtualHost_EXTERNAL_ONLY = 1,
+  envoy_api_v2_route_VirtualHost_ALL = 2
+} envoy_api_v2_route_VirtualHost_TlsRequirementType;
+
+
+/* envoy.api.v2.route.VirtualHost */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost *envoy_api_v2_route_VirtualHost_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost *)upb_msg_new(&envoy_api_v2_route_VirtualHost_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost *envoy_api_v2_route_VirtualHost_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost *ret = envoy_api_v2_route_VirtualHost_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_serialize(const envoy_api_v2_route_VirtualHost *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_name(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_domains(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const envoy_api_v2_route_Route* const* envoy_api_v2_route_VirtualHost_routes(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_Route* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE int32_t envoy_api_v2_route_VirtualHost_require_tls(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_VirtualCluster* const* envoy_api_v2_route_VirtualHost_virtual_clusters(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualCluster* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE const envoy_api_v2_route_RateLimit* const* envoy_api_v2_route_VirtualHost_rate_limits(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit* const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_VirtualHost_request_headers_to_add(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(52, 96), len); }
+UPB_INLINE const envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_VirtualHost_cors(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_CorsPolicy*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_VirtualHost_response_headers_to_add(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(56, 104), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_response_headers_to_remove(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(60, 112), len); }
+UPB_INLINE const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* const* envoy_api_v2_route_VirtualHost_per_filter_config(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(64, 120), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_request_headers_to_remove(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(68, 128), len); }
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_include_request_attempt_count(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* const* envoy_api_v2_route_VirtualHost_typed_per_filter_config(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(72, 136), len); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_VirtualHost_retry_policy(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_VirtualHost_hedge_policy(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_HedgePolicy*, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_VirtualHost_per_request_buffer_limit_bytes(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_name(envoy_api_v2_route_VirtualHost *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_domains(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_domains(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_domains(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route** envoy_api_v2_route_VirtualHost_mutable_routes(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_Route**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_Route** envoy_api_v2_route_VirtualHost_resize_routes(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route* envoy_api_v2_route_VirtualHost_add_routes(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route* sub = (struct envoy_api_v2_route_Route*)upb_msg_new(&envoy_api_v2_route_Route_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_require_tls(envoy_api_v2_route_VirtualHost *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster** envoy_api_v2_route_VirtualHost_mutable_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualCluster**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster** envoy_api_v2_route_VirtualHost_resize_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualCluster**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualCluster* envoy_api_v2_route_VirtualHost_add_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualCluster* sub = (struct envoy_api_v2_route_VirtualCluster*)upb_msg_new(&envoy_api_v2_route_VirtualCluster_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_VirtualHost_mutable_rate_limits(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_VirtualHost_resize_rate_limits(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit* envoy_api_v2_route_VirtualHost_add_rate_limits(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit* sub = (struct envoy_api_v2_route_RateLimit*)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_mutable_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 96), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_resize_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(52, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_VirtualHost_add_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_cors(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_CorsPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_CorsPolicy*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_VirtualHost_mutable_cors(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_CorsPolicy* sub = (struct envoy_api_v2_route_CorsPolicy*)envoy_api_v2_route_VirtualHost_cors(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_CorsPolicy*)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_cors(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_mutable_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 104), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_resize_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_VirtualHost_add_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(60, 112), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(60, 112), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(60, 112), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry** envoy_api_v2_route_VirtualHost_mutable_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(64, 120), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry** envoy_api_v2_route_VirtualHost_resize_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(64, 120), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* envoy_api_v2_route_VirtualHost_add_per_filter_config(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(64, 120), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(68, 128), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(68, 128), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(68, 128), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_include_request_attempt_count(envoy_api_v2_route_VirtualHost *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry** envoy_api_v2_route_VirtualHost_mutable_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(72, 136), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry** envoy_api_v2_route_VirtualHost_resize_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(72, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* envoy_api_v2_route_VirtualHost_add_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(72, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_retry_policy(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_RetryPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_VirtualHost_mutable_retry_policy(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy* sub = (struct envoy_api_v2_route_RetryPolicy*)envoy_api_v2_route_VirtualHost_retry_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_retry_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_hedge_policy(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_HedgePolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_HedgePolicy*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_VirtualHost_mutable_hedge_policy(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HedgePolicy* sub = (struct envoy_api_v2_route_HedgePolicy*)envoy_api_v2_route_VirtualHost_hedge_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HedgePolicy*)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_hedge_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_per_request_buffer_limit_bytes(envoy_api_v2_route_VirtualHost *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_VirtualHost_mutable_per_request_buffer_limit_bytes(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_VirtualHost_per_request_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_per_request_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualHost.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *ret = envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_serialize(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_key(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_value(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_key(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_value(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualHost.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.FilterAction */
+
+UPB_INLINE envoy_api_v2_route_FilterAction *envoy_api_v2_route_FilterAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_FilterAction *)upb_msg_new(&envoy_api_v2_route_FilterAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_FilterAction *envoy_api_v2_route_FilterAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_FilterAction *ret = envoy_api_v2_route_FilterAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_FilterAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_FilterAction_serialize(const envoy_api_v2_route_FilterAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_FilterAction_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_FilterAction_action(const envoy_api_v2_route_FilterAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_FilterAction_set_action(envoy_api_v2_route_FilterAction *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_FilterAction_mutable_action(envoy_api_v2_route_FilterAction *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_FilterAction_action(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_FilterAction_set_action(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route */
+
+UPB_INLINE envoy_api_v2_route_Route *envoy_api_v2_route_Route_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route *)upb_msg_new(&envoy_api_v2_route_Route_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route *envoy_api_v2_route_Route_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route *ret = envoy_api_v2_route_Route_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_serialize(const envoy_api_v2_route_Route *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_Route_action_route = 2,
+  envoy_api_v2_route_Route_action_redirect = 3,
+  envoy_api_v2_route_Route_action_direct_response = 7,
+  envoy_api_v2_route_Route_action_filter_action = 17,
+  envoy_api_v2_route_Route_action_NOT_SET = 0
+} envoy_api_v2_route_Route_action_oneofcases;
+UPB_INLINE envoy_api_v2_route_Route_action_oneofcases envoy_api_v2_route_Route_action_case(const envoy_api_v2_route_Route* msg) { return (envoy_api_v2_route_Route_action_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE const envoy_api_v2_route_RouteMatch* envoy_api_v2_route_Route_match(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_route(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 2); }
+UPB_INLINE const envoy_api_v2_route_RouteAction* envoy_api_v2_route_Route_route(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_redirect(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 3); }
+UPB_INLINE const envoy_api_v2_route_RedirectAction* envoy_api_v2_route_Route_redirect(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RedirectAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 3, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_Route_metadata(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)); }
+UPB_INLINE const envoy_api_v2_route_Decorator* envoy_api_v2_route_Route_decorator(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_Decorator*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_direct_response(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE const envoy_api_v2_route_DirectResponseAction* envoy_api_v2_route_Route_direct_response(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_DirectResponseAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 7, NULL); }
+UPB_INLINE const envoy_api_v2_route_Route_PerFilterConfigEntry* const* envoy_api_v2_route_Route_per_filter_config(const envoy_api_v2_route_Route *msg, size_t *len) { return (const envoy_api_v2_route_Route_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_Route_request_headers_to_add(const envoy_api_v2_route_Route *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_Route_response_headers_to_add(const envoy_api_v2_route_Route *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_Route_response_headers_to_remove(const envoy_api_v2_route_Route *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_Route_request_headers_to_remove(const envoy_api_v2_route_Route *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE const envoy_api_v2_route_Route_TypedPerFilterConfigEntry* const* envoy_api_v2_route_Route_typed_per_filter_config(const envoy_api_v2_route_Route *msg, size_t *len) { return (const envoy_api_v2_route_Route_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_Route_name(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_Tracing* envoy_api_v2_route_Route_tracing(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_Tracing*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_Route_per_request_buffer_limit_bytes(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_filter_action(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 17); }
+UPB_INLINE const envoy_api_v2_route_FilterAction* envoy_api_v2_route_Route_filter_action(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_FilterAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 17, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_Route_set_match(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RouteMatch* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch* envoy_api_v2_route_Route_mutable_match(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch* sub = (struct envoy_api_v2_route_RouteMatch*)envoy_api_v2_route_Route_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch*)upb_msg_new(&envoy_api_v2_route_RouteMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_route(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RouteAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction* envoy_api_v2_route_Route_mutable_route(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction* sub = (struct envoy_api_v2_route_RouteAction*)envoy_api_v2_route_Route_route(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction*)upb_msg_new(&envoy_api_v2_route_RouteAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_route(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_redirect(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RedirectAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RedirectAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RedirectAction* envoy_api_v2_route_Route_mutable_redirect(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RedirectAction* sub = (struct envoy_api_v2_route_RedirectAction*)envoy_api_v2_route_Route_redirect(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RedirectAction*)upb_msg_new(&envoy_api_v2_route_RedirectAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_redirect(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_metadata(envoy_api_v2_route_Route *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_Route_mutable_metadata(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_Route_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_decorator(envoy_api_v2_route_Route *msg, envoy_api_v2_route_Decorator* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_Decorator*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_Decorator* envoy_api_v2_route_Route_mutable_decorator(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Decorator* sub = (struct envoy_api_v2_route_Decorator*)envoy_api_v2_route_Route_decorator(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_Decorator*)upb_msg_new(&envoy_api_v2_route_Decorator_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_decorator(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_direct_response(envoy_api_v2_route_Route *msg, envoy_api_v2_route_DirectResponseAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_DirectResponseAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE struct envoy_api_v2_route_DirectResponseAction* envoy_api_v2_route_Route_mutable_direct_response(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_DirectResponseAction* sub = (struct envoy_api_v2_route_DirectResponseAction*)envoy_api_v2_route_Route_direct_response(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_DirectResponseAction*)upb_msg_new(&envoy_api_v2_route_DirectResponseAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_direct_response(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry** envoy_api_v2_route_Route_mutable_per_filter_config(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry** envoy_api_v2_route_Route_resize_per_filter_config(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route_PerFilterConfigEntry* envoy_api_v2_route_Route_add_per_filter_config(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_Route_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_mutable_request_headers_to_add(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_resize_request_headers_to_add(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_Route_add_request_headers_to_add(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_mutable_response_headers_to_add(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_resize_response_headers_to_add(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_Route_add_response_headers_to_add(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_mutable_response_headers_to_remove(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_resize_response_headers_to_remove(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_Route_add_response_headers_to_remove(envoy_api_v2_route_Route *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_mutable_request_headers_to_remove(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_resize_request_headers_to_remove(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_Route_add_request_headers_to_remove(envoy_api_v2_route_Route *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry** envoy_api_v2_route_Route_mutable_typed_per_filter_config(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry** envoy_api_v2_route_Route_resize_typed_per_filter_config(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry* envoy_api_v2_route_Route_add_typed_per_filter_config(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_name(envoy_api_v2_route_Route *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_tracing(envoy_api_v2_route_Route *msg, envoy_api_v2_route_Tracing* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_Tracing*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_Tracing* envoy_api_v2_route_Route_mutable_tracing(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Tracing* sub = (struct envoy_api_v2_route_Tracing*)envoy_api_v2_route_Route_tracing(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_Tracing*)upb_msg_new(&envoy_api_v2_route_Tracing_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_tracing(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_per_request_buffer_limit_bytes(envoy_api_v2_route_Route *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_Route_mutable_per_request_buffer_limit_bytes(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_Route_per_request_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_per_request_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_filter_action(envoy_api_v2_route_Route *msg, envoy_api_v2_route_FilterAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_FilterAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 17);
+}
+UPB_INLINE struct envoy_api_v2_route_FilterAction* envoy_api_v2_route_Route_mutable_filter_action(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_FilterAction* sub = (struct envoy_api_v2_route_FilterAction*)envoy_api_v2_route_Route_filter_action(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_FilterAction*)upb_msg_new(&envoy_api_v2_route_FilterAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_filter_action(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry *envoy_api_v2_route_Route_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry *envoy_api_v2_route_Route_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route_PerFilterConfigEntry *ret = envoy_api_v2_route_Route_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_PerFilterConfigEntry_serialize(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Route_PerFilterConfigEntry_key(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_Route_PerFilterConfigEntry_value(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Route_PerFilterConfigEntry_set_key(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_PerFilterConfigEntry_set_value(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_Route_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_Route_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_Route_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Route_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_Route_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_Route_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_Route_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster *envoy_api_v2_route_WeightedCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster *envoy_api_v2_route_WeightedCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster *ret = envoy_api_v2_route_WeightedCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_serialize(const envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight* const* envoy_api_v2_route_WeightedCluster_clusters(const envoy_api_v2_route_WeightedCluster *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_runtime_key_prefix(const envoy_api_v2_route_WeightedCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_total_weight(const envoy_api_v2_route_WeightedCluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight** envoy_api_v2_route_WeightedCluster_mutable_clusters(envoy_api_v2_route_WeightedCluster *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight** envoy_api_v2_route_WeightedCluster_resize_clusters(envoy_api_v2_route_WeightedCluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight* envoy_api_v2_route_WeightedCluster_add_clusters(envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_set_runtime_key_prefix(envoy_api_v2_route_WeightedCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_set_total_weight(envoy_api_v2_route_WeightedCluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_mutable_total_weight(envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_WeightedCluster_total_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_set_total_weight(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight *envoy_api_v2_route_WeightedCluster_ClusterWeight_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight *envoy_api_v2_route_WeightedCluster_ClusterWeight_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_name(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_ClusterWeight_weight(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_WeightedCluster_ClusterWeight_metadata_match(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_request_headers_to_add(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_response_headers_to_add(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_WeightedCluster_ClusterWeight_response_headers_to_remove(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_per_filter_config(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_WeightedCluster_ClusterWeight_request_headers_to_remove(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_typed_per_filter_config(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_name(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_weight(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_weight(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_WeightedCluster_ClusterWeight_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_set_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_metadata_match(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_metadata_match(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_WeightedCluster_ClusterWeight_metadata_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_set_metadata_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_WeightedCluster_ClusterWeight_add_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_WeightedCluster_ClusterWeight_add_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_key(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_value(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_key(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteMatch */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch *envoy_api_v2_route_RouteMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch *)upb_msg_new(&envoy_api_v2_route_RouteMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch *envoy_api_v2_route_RouteMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch *ret = envoy_api_v2_route_RouteMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_serialize(const envoy_api_v2_route_RouteMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteMatch_path_specifier_prefix = 1,
+  envoy_api_v2_route_RouteMatch_path_specifier_path = 2,
+  envoy_api_v2_route_RouteMatch_path_specifier_regex = 3,
+  envoy_api_v2_route_RouteMatch_path_specifier_safe_regex = 10,
+  envoy_api_v2_route_RouteMatch_path_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteMatch_path_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteMatch_path_specifier_oneofcases envoy_api_v2_route_RouteMatch_path_specifier_case(const envoy_api_v2_route_RouteMatch* msg) { return (envoy_api_v2_route_RouteMatch_path_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(32, 64)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_prefix(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 1); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_prefix(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_path(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_path(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_regex(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 3); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_regex(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_case_sensitive(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RouteMatch_headers(const envoy_api_v2_route_RouteMatch *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const envoy_api_v2_route_QueryParameterMatcher* const* envoy_api_v2_route_RouteMatch_query_parameters(const envoy_api_v2_route_RouteMatch *msg, size_t *len) { return (const envoy_api_v2_route_QueryParameterMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* envoy_api_v2_route_RouteMatch_grpc(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteMatch_runtime_fraction(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_safe_regex(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 10); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_RouteMatch_safe_regex(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 10, NULL); }
+UPB_INLINE const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* envoy_api_v2_route_RouteMatch_tls_context(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_prefix(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 1);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_path(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_regex(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 3);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_case_sensitive(envoy_api_v2_route_RouteMatch *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_mutable_case_sensitive(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_case_sensitive(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_case_sensitive(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RouteMatch_mutable_headers(envoy_api_v2_route_RouteMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RouteMatch_resize_headers(envoy_api_v2_route_RouteMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RouteMatch_add_headers(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher** envoy_api_v2_route_RouteMatch_mutable_query_parameters(envoy_api_v2_route_RouteMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_QueryParameterMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher** envoy_api_v2_route_RouteMatch_resize_query_parameters(envoy_api_v2_route_RouteMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_QueryParameterMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_QueryParameterMatcher* envoy_api_v2_route_RouteMatch_add_query_parameters(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_QueryParameterMatcher* sub = (struct envoy_api_v2_route_QueryParameterMatcher*)upb_msg_new(&envoy_api_v2_route_QueryParameterMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_grpc(envoy_api_v2_route_RouteMatch *msg, envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* envoy_api_v2_route_RouteMatch_mutable_grpc(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* sub = (struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*)envoy_api_v2_route_RouteMatch_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*)upb_msg_new(&envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_runtime_fraction(envoy_api_v2_route_RouteMatch *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteMatch_mutable_runtime_fraction(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_RouteMatch_runtime_fraction(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_runtime_fraction(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_safe_regex(envoy_api_v2_route_RouteMatch *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 10);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_RouteMatch_mutable_safe_regex(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_api_v2_route_RouteMatch_safe_regex(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_safe_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_tls_context(envoy_api_v2_route_RouteMatch *msg, envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* envoy_api_v2_route_RouteMatch_mutable_tls_context(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* sub = (struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*)envoy_api_v2_route_RouteMatch_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*)upb_msg_new(&envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteMatch.GrpcRouteMatchOptions */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *)upb_msg_new(&envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *ret = envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_serialize(const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RouteMatch.TlsContextMatchOptions */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *)upb_msg_new(&envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *ret = envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_serialize(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_presented(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_validated(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_presented(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_mutable_presented(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_presented(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_presented(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_validated(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_mutable_validated(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_validated(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_validated(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.CorsPolicy */
+
+UPB_INLINE envoy_api_v2_route_CorsPolicy *envoy_api_v2_route_CorsPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_CorsPolicy *)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_CorsPolicy *envoy_api_v2_route_CorsPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_CorsPolicy *ret = envoy_api_v2_route_CorsPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_CorsPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_CorsPolicy_serialize(const envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_CorsPolicy_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_enabled = 7,
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_filter_enabled = 9,
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_NOT_SET = 0
+} envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases envoy_api_v2_route_CorsPolicy_enabled_specifier_case(const envoy_api_v2_route_CorsPolicy* msg) { return (envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE upb_strview const* envoy_api_v2_route_CorsPolicy_allow_origin(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_allow_methods(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_allow_headers(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_expose_headers(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_max_age(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_allow_credentials(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(32, 64)); }
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_has_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 7, NULL); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_CorsPolicy_allow_origin_regex(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_has_filter_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 9); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_filter_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_READ_ONEOF(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 9, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_shadow_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(36, 72)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* const* envoy_api_v2_route_CorsPolicy_allow_origin_string_match(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (const struct envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_mutable_allow_origin(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_resize_allow_origin(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_add_allow_origin(envoy_api_v2_route_CorsPolicy *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_methods(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_headers(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_expose_headers(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_max_age(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_credentials(envoy_api_v2_route_CorsPolicy *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_mutable_allow_credentials(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_CorsPolicy_allow_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_allow_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_enabled(envoy_api_v2_route_CorsPolicy *msg, struct google_protobuf_BoolValue* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_BoolValue*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_mutable_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_CorsPolicy_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_mutable_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_resize_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_add_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_filter_enabled(envoy_api_v2_route_CorsPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 9);
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_mutable_filter_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_CorsPolicy_filter_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_filter_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_shadow_enabled(envoy_api_v2_route_CorsPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_mutable_shadow_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_CorsPolicy_shadow_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_shadow_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_route_CorsPolicy_mutable_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_route_CorsPolicy_resize_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_CorsPolicy_add_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction */
+
+UPB_INLINE envoy_api_v2_route_RouteAction *envoy_api_v2_route_RouteAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction *)upb_msg_new(&envoy_api_v2_route_RouteAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction *envoy_api_v2_route_RouteAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction *ret = envoy_api_v2_route_RouteAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_serialize(const envoy_api_v2_route_RouteAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_cluster_specifier_cluster = 1,
+  envoy_api_v2_route_RouteAction_cluster_specifier_cluster_header = 2,
+  envoy_api_v2_route_RouteAction_cluster_specifier_weighted_clusters = 3,
+  envoy_api_v2_route_RouteAction_cluster_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases envoy_api_v2_route_RouteAction_cluster_specifier_case(const envoy_api_v2_route_RouteAction* msg) { return (envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(100, 176)); }
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_host_rewrite = 6,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_auto_host_rewrite = 7,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_auto_host_rewrite_header = 29,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases envoy_api_v2_route_RouteAction_host_rewrite_specifier_case(const envoy_api_v2_route_RouteAction* msg) { return (envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(112, 200)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_cluster(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 1); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_cluster(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_cluster_header(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_cluster_header(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_weighted_clusters(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 3); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster* envoy_api_v2_route_RouteAction_weighted_clusters(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_WeightedCluster*, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 3, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_RouteAction_metadata_match(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(32, 40)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_prefix_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 6); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 6, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_auto_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 7); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_auto_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 7, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(36, 48)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_RouteAction_retry_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy*, UPB_SIZE(40, 56)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_request_mirror_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteAction_RequestMirrorPolicy*, UPB_SIZE(44, 64)); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_priority(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_RateLimit* const* envoy_api_v2_route_RouteAction_rate_limits(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit* const*)_upb_array_accessor(msg, UPB_SIZE(76, 128), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_include_vh_rate_limits(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(48, 72)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy* const* envoy_api_v2_route_RouteAction_hash_policy(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_HashPolicy* const*)_upb_array_accessor(msg, UPB_SIZE(80, 136), len); }
+UPB_INLINE const envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_RouteAction_cors(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_CorsPolicy*, UPB_SIZE(52, 80)); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_cluster_not_found_response_code(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_max_grpc_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(56, 88)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_idle_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 96)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_UpgradeConfig* const* envoy_api_v2_route_RouteAction_upgrade_configs(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_UpgradeConfig* const*)_upb_array_accessor(msg, UPB_SIZE(84, 144), len); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_internal_redirect_action(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_RouteAction_hedge_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_HedgePolicy*, UPB_SIZE(64, 104)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_grpc_timeout_offset(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(68, 112)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_auto_host_rewrite_header(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 29); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_auto_host_rewrite_header(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 29, upb_strview_make("", strlen(""))); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* const* envoy_api_v2_route_RouteAction_request_mirror_policies(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* const*)_upb_array_accessor(msg, UPB_SIZE(88, 152), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RouteAction_max_internal_redirects(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(72, 120)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 1);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster_header(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_weighted_clusters(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_WeightedCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_WeightedCluster*, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster* envoy_api_v2_route_RouteAction_mutable_weighted_clusters(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster* sub = (struct envoy_api_v2_route_WeightedCluster*)envoy_api_v2_route_RouteAction_weighted_clusters(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_WeightedCluster*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_weighted_clusters(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_metadata_match(envoy_api_v2_route_RouteAction *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(32, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_RouteAction_mutable_metadata_match(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_RouteAction_metadata_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_metadata_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_prefix_rewrite(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_host_rewrite(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 6);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_auto_host_rewrite(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_BoolValue* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_BoolValue*, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 7);
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_mutable_auto_host_rewrite(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_auto_host_rewrite(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_auto_host_rewrite(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(36, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_retry_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_RetryPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy*, UPB_SIZE(40, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_RouteAction_mutable_retry_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy* sub = (struct envoy_api_v2_route_RetryPolicy*)envoy_api_v2_route_RouteAction_retry_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_retry_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_request_mirror_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_RouteAction_RequestMirrorPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteAction_RequestMirrorPolicy*, UPB_SIZE(44, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_mutable_request_mirror_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)envoy_api_v2_route_RouteAction_request_mirror_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_request_mirror_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_priority(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_RouteAction_mutable_rate_limits(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 128), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_RouteAction_resize_rate_limits(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_resize_accessor(msg, UPB_SIZE(76, 128), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit* envoy_api_v2_route_RouteAction_add_rate_limits(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit* sub = (struct envoy_api_v2_route_RateLimit*)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 128), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_include_vh_rate_limits(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(48, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_mutable_include_vh_rate_limits(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_include_vh_rate_limits(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_include_vh_rate_limits(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy** envoy_api_v2_route_RouteAction_mutable_hash_policy(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy**)_upb_array_mutable_accessor(msg, UPB_SIZE(80, 136), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy** envoy_api_v2_route_RouteAction_resize_hash_policy(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy**)_upb_array_resize_accessor(msg, UPB_SIZE(80, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy* envoy_api_v2_route_RouteAction_add_hash_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(80, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cors(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_CorsPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_CorsPolicy*, UPB_SIZE(52, 80)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_RouteAction_mutable_cors(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_CorsPolicy* sub = (struct envoy_api_v2_route_CorsPolicy*)envoy_api_v2_route_RouteAction_cors(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_CorsPolicy*)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_cors(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster_not_found_response_code(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_max_grpc_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(56, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_max_grpc_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_max_grpc_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_max_grpc_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_idle_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_idle_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig** envoy_api_v2_route_RouteAction_mutable_upgrade_configs(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(84, 144), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig** envoy_api_v2_route_RouteAction_resize_upgrade_configs(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(84, 144), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_UpgradeConfig* envoy_api_v2_route_RouteAction_add_upgrade_configs(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_UpgradeConfig* sub = (struct envoy_api_v2_route_RouteAction_UpgradeConfig*)upb_msg_new(&envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(84, 144), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_internal_redirect_action(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_hedge_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_HedgePolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_HedgePolicy*, UPB_SIZE(64, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_RouteAction_mutable_hedge_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HedgePolicy* sub = (struct envoy_api_v2_route_HedgePolicy*)envoy_api_v2_route_RouteAction_hedge_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HedgePolicy*)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_hedge_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_grpc_timeout_offset(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(68, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_grpc_timeout_offset(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_grpc_timeout_offset(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_grpc_timeout_offset(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_auto_host_rewrite_header(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 29);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy** envoy_api_v2_route_RouteAction_mutable_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy**)_upb_array_mutable_accessor(msg, UPB_SIZE(88, 152), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy** envoy_api_v2_route_RouteAction_resize_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy**)_upb_array_resize_accessor(msg, UPB_SIZE(88, 152), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_add_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(88, 152), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_max_internal_redirects(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(72, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RouteAction_mutable_max_internal_redirects(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RouteAction_max_internal_redirects(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_max_internal_redirects(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.RequestMirrorPolicy */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy *)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_RequestMirrorPolicy *ret = envoy_api_v2_route_RouteAction_RequestMirrorPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_serialize(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_RequestMirrorPolicy_cluster(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_key(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_fraction(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_cluster(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_key(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_fraction(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteAction_RequestMirrorPolicy_mutable_runtime_fraction(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_fraction(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_fraction(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy *envoy_api_v2_route_RouteAction_HashPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy *envoy_api_v2_route_RouteAction_HashPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy *ret = envoy_api_v2_route_RouteAction_HashPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_serialize(const envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_header = 1,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_cookie = 2,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_connection_properties = 3,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_query_parameter = 5,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_case(const envoy_api_v2_route_RouteAction_HashPolicy* msg) { return (envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_header(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_Header* envoy_api_v2_route_RouteAction_HashPolicy_header(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_Header*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_cookie(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_Cookie* envoy_api_v2_route_RouteAction_HashPolicy_cookie(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_Cookie*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_connection_properties(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* envoy_api_v2_route_RouteAction_HashPolicy_connection_properties(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_terminal(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_query_parameter(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* envoy_api_v2_route_RouteAction_HashPolicy_query_parameter(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_header(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_Header* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_Header*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_Header* envoy_api_v2_route_RouteAction_HashPolicy_mutable_header(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_Header* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Header*)envoy_api_v2_route_RouteAction_HashPolicy_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Header*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_cookie(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_Cookie* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_Cookie*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie* envoy_api_v2_route_RouteAction_HashPolicy_mutable_cookie(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie*)envoy_api_v2_route_RouteAction_HashPolicy_cookie(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_cookie(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_connection_properties(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* envoy_api_v2_route_RouteAction_HashPolicy_mutable_connection_properties(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*)envoy_api_v2_route_RouteAction_HashPolicy_connection_properties(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_connection_properties(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_terminal(envoy_api_v2_route_RouteAction_HashPolicy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_query_parameter(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* envoy_api_v2_route_RouteAction_HashPolicy_mutable_query_parameter(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*)envoy_api_v2_route_RouteAction_HashPolicy_query_parameter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_query_parameter(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.Header */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Header *envoy_api_v2_route_RouteAction_HashPolicy_Header_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_Header *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Header *envoy_api_v2_route_RouteAction_HashPolicy_Header_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_Header *ret = envoy_api_v2_route_RouteAction_HashPolicy_Header_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_Header_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_Header *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Header_header_name(const envoy_api_v2_route_RouteAction_HashPolicy_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Header_set_header_name(envoy_api_v2_route_RouteAction_HashPolicy_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.Cookie */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Cookie *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_Cookie *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Cookie *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_Cookie *ret = envoy_api_v2_route_RouteAction_HashPolicy_Cookie_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Cookie_name(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_HashPolicy_Cookie_ttl(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Cookie_path(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_name(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_ttl(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_HashPolicy_Cookie_mutable_ttl(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_HashPolicy_Cookie_ttl(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_ttl(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_path(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.ConnectionProperties */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *ret = envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_source_ip(const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_set_source_ip(envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.QueryParameter */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *ret = envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_name(const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_set_name(envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.UpgradeConfig */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig *envoy_api_v2_route_RouteAction_UpgradeConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig *)upb_msg_new(&envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig *envoy_api_v2_route_RouteAction_UpgradeConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_UpgradeConfig *ret = envoy_api_v2_route_RouteAction_UpgradeConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_UpgradeConfig_serialize(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_UpgradeConfig_upgrade_type(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_UpgradeConfig_enabled(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_UpgradeConfig_set_upgrade_type(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_UpgradeConfig_set_enabled(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_UpgradeConfig_mutable_enabled(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_UpgradeConfig_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_UpgradeConfig_set_enabled(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy *envoy_api_v2_route_RetryPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy *envoy_api_v2_route_RetryPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy *ret = envoy_api_v2_route_RetryPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_serialize(const envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_retry_on(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RetryPolicy_num_retries(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_per_try_timeout(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 32)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryPriority* envoy_api_v2_route_RetryPolicy_retry_priority(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy_RetryPriority*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* const* envoy_api_v2_route_RetryPolicy_retry_host_predicate(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE int64_t envoy_api_v2_route_RetryPolicy_host_selection_retry_max_attempts(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t const* envoy_api_v2_route_RetryPolicy_retriable_status_codes(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryBackOff* envoy_api_v2_route_RetryPolicy_retry_back_off(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy_RetryBackOff*, UPB_SIZE(28, 48)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RetryPolicy_retriable_headers(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RetryPolicy_retriable_request_headers(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_on(envoy_api_v2_route_RetryPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_num_retries(envoy_api_v2_route_RetryPolicy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RetryPolicy_mutable_num_retries(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RetryPolicy_num_retries(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_num_retries(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_per_try_timeout(envoy_api_v2_route_RetryPolicy *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_mutable_per_try_timeout(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_per_try_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_per_try_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_priority(envoy_api_v2_route_RetryPolicy *msg, envoy_api_v2_route_RetryPolicy_RetryPriority* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy_RetryPriority*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryPriority* envoy_api_v2_route_RetryPolicy_mutable_retry_priority(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryPriority* sub = (struct envoy_api_v2_route_RetryPolicy_RetryPriority*)envoy_api_v2_route_RetryPolicy_retry_priority(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy_RetryPriority*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_retry_priority(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate** envoy_api_v2_route_RetryPolicy_mutable_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate** envoy_api_v2_route_RetryPolicy_resize_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate* envoy_api_v2_route_RetryPolicy_add_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate* sub = (struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_host_selection_retry_max_attempts(envoy_api_v2_route_RetryPolicy *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE uint32_t* envoy_api_v2_route_RetryPolicy_mutable_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE uint32_t* envoy_api_v2_route_RetryPolicy_resize_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_add_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_back_off(envoy_api_v2_route_RetryPolicy *msg, envoy_api_v2_route_RetryPolicy_RetryBackOff* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy_RetryBackOff*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryBackOff* envoy_api_v2_route_RetryPolicy_mutable_retry_back_off(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryBackOff* sub = (struct envoy_api_v2_route_RetryPolicy_RetryBackOff*)envoy_api_v2_route_RetryPolicy_retry_back_off(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy_RetryBackOff*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_retry_back_off(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_mutable_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_resize_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RetryPolicy_add_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_mutable_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_resize_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RetryPolicy_add_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryPriority */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority *envoy_api_v2_route_RetryPolicy_RetryPriority_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryPriority *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority *envoy_api_v2_route_RetryPolicy_RetryPriority_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryPriority *ret = envoy_api_v2_route_RetryPolicy_RetryPriority_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryPriority_serialize(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_config = 2,
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_typed_config = 3,
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_NOT_SET = 0
+} envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_case(const envoy_api_v2_route_RetryPolicy_RetryPriority* msg) { return (envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_RetryPriority_name(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryPriority_has_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryPriority_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryPriority_has_typed_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryPriority_typed_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_name(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryPriority_mutable_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_RetryPolicy_RetryPriority_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryPriority_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_typed_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryPriority_mutable_typed_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_RetryPolicy_RetryPriority_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryPriority_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryHostPredicate */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate *ret = envoy_api_v2_route_RetryPolicy_RetryHostPredicate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_serialize(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_config = 2,
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_typed_config = 3,
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_NOT_SET = 0
+} envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_case(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* msg) { return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_RetryHostPredicate_name(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryHostPredicate_has_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryHostPredicate_has_typed_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_typed_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_name(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_mutable_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_typed_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_mutable_typed_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_RetryPolicy_RetryHostPredicate_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryBackOff */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryBackOff *envoy_api_v2_route_RetryPolicy_RetryBackOff_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryBackOff *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryBackOff *envoy_api_v2_route_RetryPolicy_RetryBackOff_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryBackOff *ret = envoy_api_v2_route_RetryPolicy_RetryBackOff_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryBackOff_serialize(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_base_interval(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_max_interval(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryBackOff_set_base_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_mutable_base_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_RetryBackOff_base_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryBackOff_set_base_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryBackOff_set_max_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_mutable_max_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_RetryBackOff_max_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryBackOff_set_max_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.HedgePolicy */
+
+UPB_INLINE envoy_api_v2_route_HedgePolicy *envoy_api_v2_route_HedgePolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_HedgePolicy *)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_HedgePolicy *envoy_api_v2_route_HedgePolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_HedgePolicy *ret = envoy_api_v2_route_HedgePolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_HedgePolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_HedgePolicy_serialize(const envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_HedgePolicy_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_HedgePolicy_initial_requests(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_HedgePolicy_additional_request_chance(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_HedgePolicy_hedge_on_per_try_timeout(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_initial_requests(envoy_api_v2_route_HedgePolicy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_HedgePolicy_mutable_initial_requests(envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_HedgePolicy_initial_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HedgePolicy_set_initial_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_additional_request_chance(envoy_api_v2_route_HedgePolicy *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_HedgePolicy_mutable_additional_request_chance(envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_HedgePolicy_additional_request_chance(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HedgePolicy_set_additional_request_chance(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_hedge_on_per_try_timeout(envoy_api_v2_route_HedgePolicy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RedirectAction */
+
+UPB_INLINE envoy_api_v2_route_RedirectAction *envoy_api_v2_route_RedirectAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RedirectAction *)upb_msg_new(&envoy_api_v2_route_RedirectAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RedirectAction *envoy_api_v2_route_RedirectAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RedirectAction *ret = envoy_api_v2_route_RedirectAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RedirectAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RedirectAction_serialize(const envoy_api_v2_route_RedirectAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RedirectAction_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_https_redirect = 4,
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_scheme_redirect = 7,
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_case(const envoy_api_v2_route_RedirectAction* msg) { return (envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(44, 72)); }
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_path_redirect = 2,
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_prefix_rewrite = 5,
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases envoy_api_v2_route_RedirectAction_path_rewrite_specifier_case(const envoy_api_v2_route_RedirectAction* msg) { return (envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(32, 48)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_host_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_path_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 48), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_path_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), UPB_SIZE(32, 48), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE int32_t envoy_api_v2_route_RedirectAction_response_code(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_https_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(44, 72), 4); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_https_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(36, 56), UPB_SIZE(44, 72), 4, false); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_prefix_rewrite(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 48), 5); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_prefix_rewrite(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), UPB_SIZE(32, 48), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_strip_query(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(12, 12)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_scheme_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(44, 72), 7); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_scheme_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(36, 56), UPB_SIZE(44, 72), 7, upb_strview_make("", strlen(""))); }
+UPB_INLINE uint32_t envoy_api_v2_route_RedirectAction_port_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_host_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_path_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), value, UPB_SIZE(32, 48), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_response_code(envoy_api_v2_route_RedirectAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_https_redirect(envoy_api_v2_route_RedirectAction *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(36, 56), value, UPB_SIZE(44, 72), 4);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_prefix_rewrite(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), value, UPB_SIZE(32, 48), 5);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_strip_query(envoy_api_v2_route_RedirectAction *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_scheme_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(36, 56), value, UPB_SIZE(44, 72), 7);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_port_redirect(envoy_api_v2_route_RedirectAction *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.route.DirectResponseAction */
+
+UPB_INLINE envoy_api_v2_route_DirectResponseAction *envoy_api_v2_route_DirectResponseAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_DirectResponseAction *)upb_msg_new(&envoy_api_v2_route_DirectResponseAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_DirectResponseAction *envoy_api_v2_route_DirectResponseAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_DirectResponseAction *ret = envoy_api_v2_route_DirectResponseAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_DirectResponseAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_DirectResponseAction_serialize(const envoy_api_v2_route_DirectResponseAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_DirectResponseAction_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_route_DirectResponseAction_status(const envoy_api_v2_route_DirectResponseAction *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_route_DirectResponseAction_body(const envoy_api_v2_route_DirectResponseAction *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_DirectResponseAction_set_status(envoy_api_v2_route_DirectResponseAction *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_DirectResponseAction_set_body(envoy_api_v2_route_DirectResponseAction *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_route_DirectResponseAction_mutable_body(envoy_api_v2_route_DirectResponseAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_route_DirectResponseAction_body(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_DirectResponseAction_set_body(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Decorator */
+
+UPB_INLINE envoy_api_v2_route_Decorator *envoy_api_v2_route_Decorator_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Decorator *)upb_msg_new(&envoy_api_v2_route_Decorator_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Decorator *envoy_api_v2_route_Decorator_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Decorator *ret = envoy_api_v2_route_Decorator_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Decorator_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Decorator_serialize(const envoy_api_v2_route_Decorator *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Decorator_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Decorator_operation(const envoy_api_v2_route_Decorator *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_Decorator_propagate(const envoy_api_v2_route_Decorator *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Decorator_set_operation(envoy_api_v2_route_Decorator *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Decorator_set_propagate(envoy_api_v2_route_Decorator *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_Decorator_mutable_propagate(envoy_api_v2_route_Decorator *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_Decorator_propagate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Decorator_set_propagate(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Tracing */
+
+UPB_INLINE envoy_api_v2_route_Tracing *envoy_api_v2_route_Tracing_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Tracing *)upb_msg_new(&envoy_api_v2_route_Tracing_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Tracing *envoy_api_v2_route_Tracing_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Tracing *ret = envoy_api_v2_route_Tracing_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Tracing_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Tracing_serialize(const envoy_api_v2_route_Tracing *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Tracing_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_client_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_random_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_overall_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_type_tracing_v2_CustomTag* const* envoy_api_v2_route_Tracing_custom_tags(const envoy_api_v2_route_Tracing *msg, size_t *len) { return (const struct envoy_type_tracing_v2_CustomTag* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_Tracing_set_client_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_client_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_client_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_client_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Tracing_set_random_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_random_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_random_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_random_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Tracing_set_overall_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_overall_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_overall_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_overall_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_api_v2_route_Tracing_mutable_custom_tags(envoy_api_v2_route_Tracing *msg, size_t *len) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_api_v2_route_Tracing_resize_custom_tags(envoy_api_v2_route_Tracing *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag* envoy_api_v2_route_Tracing_add_custom_tags(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag* sub = (struct envoy_type_tracing_v2_CustomTag*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualCluster */
+
+UPB_INLINE envoy_api_v2_route_VirtualCluster *envoy_api_v2_route_VirtualCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualCluster *)upb_msg_new(&envoy_api_v2_route_VirtualCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster *envoy_api_v2_route_VirtualCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualCluster *ret = envoy_api_v2_route_VirtualCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualCluster_serialize(const envoy_api_v2_route_VirtualCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualCluster_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualCluster_pattern(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualCluster_name(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE int32_t envoy_api_v2_route_VirtualCluster_method(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_VirtualCluster_headers(const envoy_api_v2_route_VirtualCluster *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(24, 40), len); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_pattern(envoy_api_v2_route_VirtualCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_name(envoy_api_v2_route_VirtualCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_method(envoy_api_v2_route_VirtualCluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_VirtualCluster_mutable_headers(envoy_api_v2_route_VirtualCluster *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 40), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_VirtualCluster_resize_headers(envoy_api_v2_route_VirtualCluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_VirtualCluster_add_headers(envoy_api_v2_route_VirtualCluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit */
+
+UPB_INLINE envoy_api_v2_route_RateLimit *envoy_api_v2_route_RateLimit_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit *)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit *envoy_api_v2_route_RateLimit_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit *ret = envoy_api_v2_route_RateLimit_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_serialize(const envoy_api_v2_route_RateLimit *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RateLimit_stage(const envoy_api_v2_route_RateLimit *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_disable_key(const envoy_api_v2_route_RateLimit *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action* const* envoy_api_v2_route_RateLimit_actions(const envoy_api_v2_route_RateLimit *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit_Action* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_set_stage(envoy_api_v2_route_RateLimit *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RateLimit_mutable_stage(envoy_api_v2_route_RateLimit *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RateLimit_stage(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_set_stage(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_set_disable_key(envoy_api_v2_route_RateLimit *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action** envoy_api_v2_route_RateLimit_mutable_actions(envoy_api_v2_route_RateLimit *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit_Action**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action** envoy_api_v2_route_RateLimit_resize_actions(envoy_api_v2_route_RateLimit *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action* envoy_api_v2_route_RateLimit_add_actions(envoy_api_v2_route_RateLimit *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action* sub = (struct envoy_api_v2_route_RateLimit_Action*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit.Action */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action *envoy_api_v2_route_RateLimit_Action_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action *envoy_api_v2_route_RateLimit_Action_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action *ret = envoy_api_v2_route_RateLimit_Action_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_serialize(const envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RateLimit_Action_action_specifier_source_cluster = 1,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_destination_cluster = 2,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_request_headers = 3,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_remote_address = 4,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_generic_key = 5,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_header_value_match = 6,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_NOT_SET = 0
+} envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases envoy_api_v2_route_RateLimit_Action_action_specifier_case(const envoy_api_v2_route_RateLimit_Action* msg) { return (envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_source_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_SourceCluster* envoy_api_v2_route_RateLimit_Action_source_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_SourceCluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_destination_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_DestinationCluster* envoy_api_v2_route_RateLimit_Action_destination_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_DestinationCluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_request_headers(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_RequestHeaders* envoy_api_v2_route_RateLimit_Action_request_headers(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_RequestHeaders*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_remote_address(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_RemoteAddress* envoy_api_v2_route_RateLimit_Action_remote_address(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_RemoteAddress*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_generic_key(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_GenericKey* envoy_api_v2_route_RateLimit_Action_generic_key(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_GenericKey*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_header_value_match(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 6); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* envoy_api_v2_route_RateLimit_Action_header_value_match(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 6, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_source_cluster(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_SourceCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_SourceCluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_SourceCluster* envoy_api_v2_route_RateLimit_Action_mutable_source_cluster(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_SourceCluster* sub = (struct envoy_api_v2_route_RateLimit_Action_SourceCluster*)envoy_api_v2_route_RateLimit_Action_source_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_SourceCluster*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_source_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_destination_cluster(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_DestinationCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_DestinationCluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_DestinationCluster* envoy_api_v2_route_RateLimit_Action_mutable_destination_cluster(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_DestinationCluster* sub = (struct envoy_api_v2_route_RateLimit_Action_DestinationCluster*)envoy_api_v2_route_RateLimit_Action_destination_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_DestinationCluster*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_destination_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_request_headers(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_RequestHeaders* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_RequestHeaders*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_RequestHeaders* envoy_api_v2_route_RateLimit_Action_mutable_request_headers(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_RequestHeaders* sub = (struct envoy_api_v2_route_RateLimit_Action_RequestHeaders*)envoy_api_v2_route_RateLimit_Action_request_headers(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_RequestHeaders*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_request_headers(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_remote_address(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_RemoteAddress* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_RemoteAddress*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_RemoteAddress* envoy_api_v2_route_RateLimit_Action_mutable_remote_address(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_RemoteAddress* sub = (struct envoy_api_v2_route_RateLimit_Action_RemoteAddress*)envoy_api_v2_route_RateLimit_Action_remote_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_RemoteAddress*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_remote_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_generic_key(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_GenericKey* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_GenericKey*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_GenericKey* envoy_api_v2_route_RateLimit_Action_mutable_generic_key(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_GenericKey* sub = (struct envoy_api_v2_route_RateLimit_Action_GenericKey*)envoy_api_v2_route_RateLimit_Action_generic_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_GenericKey*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_generic_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_header_value_match(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 6);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* envoy_api_v2_route_RateLimit_Action_mutable_header_value_match(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* sub = (struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*)envoy_api_v2_route_RateLimit_Action_header_value_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_header_value_match(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.SourceCluster */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_SourceCluster *envoy_api_v2_route_RateLimit_Action_SourceCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_SourceCluster *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_SourceCluster *envoy_api_v2_route_RateLimit_Action_SourceCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_SourceCluster *ret = envoy_api_v2_route_RateLimit_Action_SourceCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_SourceCluster_serialize(const envoy_api_v2_route_RateLimit_Action_SourceCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.DestinationCluster */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_DestinationCluster *envoy_api_v2_route_RateLimit_Action_DestinationCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_DestinationCluster *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_DestinationCluster *envoy_api_v2_route_RateLimit_Action_DestinationCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_DestinationCluster *ret = envoy_api_v2_route_RateLimit_Action_DestinationCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_DestinationCluster_serialize(const envoy_api_v2_route_RateLimit_Action_DestinationCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.RequestHeaders */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RequestHeaders *envoy_api_v2_route_RateLimit_Action_RequestHeaders_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_RequestHeaders *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RequestHeaders *envoy_api_v2_route_RateLimit_Action_RequestHeaders_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_RequestHeaders *ret = envoy_api_v2_route_RateLimit_Action_RequestHeaders_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_RequestHeaders_serialize(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_RequestHeaders_header_name(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_RequestHeaders_descriptor_key(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_RequestHeaders_set_header_name(envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_RequestHeaders_set_descriptor_key(envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.RemoteAddress */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RemoteAddress *envoy_api_v2_route_RateLimit_Action_RemoteAddress_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_RemoteAddress *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RemoteAddress *envoy_api_v2_route_RateLimit_Action_RemoteAddress_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_RemoteAddress *ret = envoy_api_v2_route_RateLimit_Action_RemoteAddress_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_RemoteAddress_serialize(const envoy_api_v2_route_RateLimit_Action_RemoteAddress *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.GenericKey */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_GenericKey *envoy_api_v2_route_RateLimit_Action_GenericKey_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_GenericKey *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_GenericKey *envoy_api_v2_route_RateLimit_Action_GenericKey_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_GenericKey *ret = envoy_api_v2_route_RateLimit_Action_GenericKey_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_GenericKey_serialize(const envoy_api_v2_route_RateLimit_Action_GenericKey *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_GenericKey_descriptor_value(const envoy_api_v2_route_RateLimit_Action_GenericKey *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_GenericKey_set_descriptor_value(envoy_api_v2_route_RateLimit_Action_GenericKey *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.HeaderValueMatch */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *ret = envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_serialize(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_descriptor_value(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_expect_match(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_headers(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_descriptor_value(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_expect_match(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_mutable_expect_match(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_expect_match(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_expect_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_mutable_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_resize_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_add_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.HeaderMatcher */
+
+UPB_INLINE envoy_api_v2_route_HeaderMatcher *envoy_api_v2_route_HeaderMatcher_new(upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher *)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher *envoy_api_v2_route_HeaderMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_HeaderMatcher *ret = envoy_api_v2_route_HeaderMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_HeaderMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_HeaderMatcher_serialize(const envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_HeaderMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_exact_match = 4,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_regex_match = 5,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_safe_regex_match = 11,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_range_match = 6,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_present_match = 7,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_prefix_match = 9,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_suffix_match = 10,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_NOT_SET = 0
+} envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases envoy_api_v2_route_HeaderMatcher_header_match_specifier_case(const envoy_api_v2_route_HeaderMatcher* msg) { return (envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_name(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_exact_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_exact_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_range_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 6); }
+UPB_INLINE const struct envoy_type_Int64Range* envoy_api_v2_route_HeaderMatcher_range_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_Int64Range*, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 6, NULL); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_present_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 7); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_present_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 7, false); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_invert_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_prefix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 9); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_prefix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 9, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_suffix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 10); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_suffix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 10, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_safe_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 11); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_HeaderMatcher_safe_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 11, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_name(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_exact_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_regex_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_range_match(envoy_api_v2_route_HeaderMatcher *msg, struct envoy_type_Int64Range* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_Int64Range*, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 6);
+}
+UPB_INLINE struct envoy_type_Int64Range* envoy_api_v2_route_HeaderMatcher_mutable_range_match(envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena) {
+  struct envoy_type_Int64Range* sub = (struct envoy_type_Int64Range*)envoy_api_v2_route_HeaderMatcher_range_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Int64Range*)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HeaderMatcher_set_range_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_present_match(envoy_api_v2_route_HeaderMatcher *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 7);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_invert_match(envoy_api_v2_route_HeaderMatcher *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_prefix_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 9);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_suffix_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 10);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_safe_regex_match(envoy_api_v2_route_HeaderMatcher *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 11);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_HeaderMatcher_mutable_safe_regex_match(envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_api_v2_route_HeaderMatcher_safe_regex_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HeaderMatcher_set_safe_regex_match(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.QueryParameterMatcher */
+
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher *envoy_api_v2_route_QueryParameterMatcher_new(upb_arena *arena) {
+  return (envoy_api_v2_route_QueryParameterMatcher *)upb_msg_new(&envoy_api_v2_route_QueryParameterMatcher_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher *envoy_api_v2_route_QueryParameterMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_QueryParameterMatcher *ret = envoy_api_v2_route_QueryParameterMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_QueryParameterMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_QueryParameterMatcher_serialize(const envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_QueryParameterMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_string_match = 5,
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_present_match = 6,
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_NOT_SET = 0
+} envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_case(const envoy_api_v2_route_QueryParameterMatcher* msg) { return (envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 48)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_QueryParameterMatcher_name(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_QueryParameterMatcher_value(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_QueryParameterMatcher_regex(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_has_string_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 48), 5); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_QueryParameterMatcher_string_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_StringMatcher*, UPB_SIZE(20, 40), UPB_SIZE(24, 48), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_has_present_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 48), 6); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_present_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(20, 40), UPB_SIZE(24, 48), 6, false); }
+
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_name(envoy_api_v2_route_QueryParameterMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_value(envoy_api_v2_route_QueryParameterMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_regex(envoy_api_v2_route_QueryParameterMatcher *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_QueryParameterMatcher_mutable_regex(envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_QueryParameterMatcher_regex(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_QueryParameterMatcher_set_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_string_match(envoy_api_v2_route_QueryParameterMatcher *msg, struct envoy_type_matcher_StringMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_StringMatcher*, UPB_SIZE(20, 40), value, UPB_SIZE(24, 48), 5);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_QueryParameterMatcher_mutable_string_match(envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)envoy_api_v2_route_QueryParameterMatcher_string_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_QueryParameterMatcher_set_string_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_present_match(envoy_api_v2_route_QueryParameterMatcher *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(20, 40), value, UPB_SIZE(24, 48), 6);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h
new file mode 100644
index 0000000..fff6d7b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h	
@@ -0,0 +1,158 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/scoped_route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_ScopedRouteConfiguration;
+struct envoy_api_v2_ScopedRouteConfiguration_Key;
+struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment;
+typedef struct envoy_api_v2_ScopedRouteConfiguration envoy_api_v2_ScopedRouteConfiguration;
+typedef struct envoy_api_v2_ScopedRouteConfiguration_Key envoy_api_v2_ScopedRouteConfiguration_Key;
+typedef struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment envoy_api_v2_ScopedRouteConfiguration_Key_Fragment;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit;
+
+
+/* envoy.api.v2.ScopedRouteConfiguration */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration *envoy_api_v2_ScopedRouteConfiguration_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration *envoy_api_v2_ScopedRouteConfiguration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration *ret = envoy_api_v2_ScopedRouteConfiguration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_serialize(const envoy_api_v2_ScopedRouteConfiguration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_name(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_route_configuration_name(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_ScopedRouteConfiguration_Key* envoy_api_v2_ScopedRouteConfiguration_key(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_ScopedRouteConfiguration_Key*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_name(envoy_api_v2_ScopedRouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_route_configuration_name(envoy_api_v2_ScopedRouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_key(envoy_api_v2_ScopedRouteConfiguration *msg, envoy_api_v2_ScopedRouteConfiguration_Key* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_ScopedRouteConfiguration_Key*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration_Key* envoy_api_v2_ScopedRouteConfiguration_mutable_key(envoy_api_v2_ScopedRouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration_Key* sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key*)envoy_api_v2_ScopedRouteConfiguration_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ScopedRouteConfiguration_set_key(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.ScopedRouteConfiguration.Key */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key *envoy_api_v2_ScopedRouteConfiguration_Key_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key *envoy_api_v2_ScopedRouteConfiguration_Key_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration_Key *ret = envoy_api_v2_ScopedRouteConfiguration_Key_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_Key_serialize(const envoy_api_v2_ScopedRouteConfiguration_Key *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* const* envoy_api_v2_ScopedRouteConfiguration_Key_fragments(const envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t *len) { return (const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment** envoy_api_v2_ScopedRouteConfiguration_Key_mutable_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t *len) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment** envoy_api_v2_ScopedRouteConfiguration_Key_resize_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* envoy_api_v2_ScopedRouteConfiguration_Key_add_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.ScopedRouteConfiguration.Key.Fragment */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *ret = envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_serialize(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_string_key = 1,
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_NOT_SET = 0
+} envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases;
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_case(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* msg) { return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_has_string_key(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_string_key(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_set_string_key(envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h
new file mode 100644
index 0000000..5b8c94e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/srds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_SRDS_PROTO_UPB_H_
+#define ENVOY_API_V2_SRDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h"
+#else
+  #include  "envoy/api/v2/scoped_route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_SrdsDummy;
+typedef struct envoy_api_v2_SrdsDummy envoy_api_v2_SrdsDummy;
+extern const upb_msglayout envoy_api_v2_SrdsDummy_msginit;
+
+
+/* envoy.api.v2.SrdsDummy */
+
+UPB_INLINE envoy_api_v2_SrdsDummy *envoy_api_v2_SrdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_SrdsDummy *)upb_msg_new(&envoy_api_v2_SrdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_SrdsDummy *envoy_api_v2_SrdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_SrdsDummy *ret = envoy_api_v2_SrdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_SrdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_SrdsDummy_serialize(const envoy_api_v2_SrdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_SrdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_SRDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h
new file mode 100644
index 0000000..6ba2d0b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h	
@@ -0,0 +1,749 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/accesslog/v2/accesslog.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_
+#define ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_filter_accesslog_v2_AccessLog;
+struct envoy_config_filter_accesslog_v2_AccessLogFilter;
+struct envoy_config_filter_accesslog_v2_ComparisonFilter;
+struct envoy_config_filter_accesslog_v2_StatusCodeFilter;
+struct envoy_config_filter_accesslog_v2_DurationFilter;
+struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter;
+struct envoy_config_filter_accesslog_v2_TraceableFilter;
+struct envoy_config_filter_accesslog_v2_RuntimeFilter;
+struct envoy_config_filter_accesslog_v2_AndFilter;
+struct envoy_config_filter_accesslog_v2_OrFilter;
+struct envoy_config_filter_accesslog_v2_HeaderFilter;
+struct envoy_config_filter_accesslog_v2_ResponseFlagFilter;
+struct envoy_config_filter_accesslog_v2_GrpcStatusFilter;
+struct envoy_config_filter_accesslog_v2_ExtensionFilter;
+typedef struct envoy_config_filter_accesslog_v2_AccessLog envoy_config_filter_accesslog_v2_AccessLog;
+typedef struct envoy_config_filter_accesslog_v2_AccessLogFilter envoy_config_filter_accesslog_v2_AccessLogFilter;
+typedef struct envoy_config_filter_accesslog_v2_ComparisonFilter envoy_config_filter_accesslog_v2_ComparisonFilter;
+typedef struct envoy_config_filter_accesslog_v2_StatusCodeFilter envoy_config_filter_accesslog_v2_StatusCodeFilter;
+typedef struct envoy_config_filter_accesslog_v2_DurationFilter envoy_config_filter_accesslog_v2_DurationFilter;
+typedef struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter envoy_config_filter_accesslog_v2_NotHealthCheckFilter;
+typedef struct envoy_config_filter_accesslog_v2_TraceableFilter envoy_config_filter_accesslog_v2_TraceableFilter;
+typedef struct envoy_config_filter_accesslog_v2_RuntimeFilter envoy_config_filter_accesslog_v2_RuntimeFilter;
+typedef struct envoy_config_filter_accesslog_v2_AndFilter envoy_config_filter_accesslog_v2_AndFilter;
+typedef struct envoy_config_filter_accesslog_v2_OrFilter envoy_config_filter_accesslog_v2_OrFilter;
+typedef struct envoy_config_filter_accesslog_v2_HeaderFilter envoy_config_filter_accesslog_v2_HeaderFilter;
+typedef struct envoy_config_filter_accesslog_v2_ResponseFlagFilter envoy_config_filter_accesslog_v2_ResponseFlagFilter;
+typedef struct envoy_config_filter_accesslog_v2_GrpcStatusFilter envoy_config_filter_accesslog_v2_GrpcStatusFilter;
+typedef struct envoy_config_filter_accesslog_v2_ExtensionFilter envoy_config_filter_accesslog_v2_ExtensionFilter;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLog_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLogFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ComparisonFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_DurationFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_TraceableFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_RuntimeFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AndFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_OrFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_HeaderFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ExtensionFilter_msginit;
+struct envoy_api_v2_core_RuntimeUInt32;
+struct envoy_api_v2_route_HeaderMatcher;
+struct envoy_type_FractionalPercent;
+struct google_protobuf_Any;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_RuntimeUInt32_msginit;
+extern const upb_msglayout envoy_api_v2_route_HeaderMatcher_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_ComparisonFilter_EQ = 0,
+  envoy_config_filter_accesslog_v2_ComparisonFilter_GE = 1,
+  envoy_config_filter_accesslog_v2_ComparisonFilter_LE = 2
+} envoy_config_filter_accesslog_v2_ComparisonFilter_Op;
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_OK = 0,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_CANCELED = 1,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNKNOWN = 2,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_INVALID_ARGUMENT = 3,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_DEADLINE_EXCEEDED = 4,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_NOT_FOUND = 5,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_ALREADY_EXISTS = 6,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_PERMISSION_DENIED = 7,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_RESOURCE_EXHAUSTED = 8,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_FAILED_PRECONDITION = 9,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_ABORTED = 10,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_OUT_OF_RANGE = 11,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNIMPLEMENTED = 12,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_INTERNAL = 13,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNAVAILABLE = 14,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_DATA_LOSS = 15,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNAUTHENTICATED = 16
+} envoy_config_filter_accesslog_v2_GrpcStatusFilter_Status;
+
+
+/* envoy.config.filter.accesslog.v2.AccessLog */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog *envoy_config_filter_accesslog_v2_AccessLog_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLog *)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLog_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog *envoy_config_filter_accesslog_v2_AccessLog_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AccessLog *ret = envoy_config_filter_accesslog_v2_AccessLog_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AccessLog_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AccessLog_serialize(const envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AccessLog_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_config = 3,
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_typed_config = 4,
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases envoy_config_filter_accesslog_v2_AccessLog_config_type_case(const envoy_config_filter_accesslog_v2_AccessLog* msg) { return (envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_AccessLog_name(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AccessLog_filter(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_AccessLogFilter*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLog_has_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_AccessLog_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLog_has_typed_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_accesslog_v2_AccessLog_typed_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_name(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_filter(envoy_config_filter_accesslog_v2_AccessLog *msg, envoy_config_filter_accesslog_v2_AccessLogFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_AccessLogFilter*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AccessLog_mutable_filter(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)envoy_config_filter_accesslog_v2_AccessLog_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_config(envoy_config_filter_accesslog_v2_AccessLog *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_AccessLog_mutable_config(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_accesslog_v2_AccessLog_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_typed_config(envoy_config_filter_accesslog_v2_AccessLog *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_accesslog_v2_AccessLog_mutable_typed_config(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_accesslog_v2_AccessLog_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.AccessLogFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter *envoy_config_filter_accesslog_v2_AccessLogFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter *envoy_config_filter_accesslog_v2_AccessLogFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AccessLogFilter *ret = envoy_config_filter_accesslog_v2_AccessLogFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AccessLogFilter_serialize(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_status_code_filter = 1,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_duration_filter = 2,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_not_health_check_filter = 3,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_traceable_filter = 4,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_runtime_filter = 5,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_and_filter = 6,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_or_filter = 7,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_header_filter = 8,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_response_flag_filter = 9,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_grpc_status_filter = 10,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_extension_filter = 11,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_case(const envoy_config_filter_accesslog_v2_AccessLogFilter* msg) { return (envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_status_code_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_StatusCodeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_status_code_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_StatusCodeFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_duration_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_DurationFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_duration_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_DurationFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_not_health_check_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_NotHealthCheckFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_not_health_check_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_NotHealthCheckFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_traceable_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_TraceableFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_traceable_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_TraceableFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_runtime_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_RuntimeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_runtime_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_RuntimeFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_and_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 6); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_AndFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_and_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_AndFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 6, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_or_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 7); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_OrFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_or_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_OrFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 7, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_header_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 8); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_HeaderFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_header_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_HeaderFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 8, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_response_flag_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 9); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_ResponseFlagFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_response_flag_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_ResponseFlagFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 9, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_grpc_status_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 10); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_GrpcStatusFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_grpc_status_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_GrpcStatusFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 10, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_extension_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 11); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_ExtensionFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_extension_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_ExtensionFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 11, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_status_code_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_StatusCodeFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_StatusCodeFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_StatusCodeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_status_code_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_StatusCodeFilter* sub = (struct envoy_config_filter_accesslog_v2_StatusCodeFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_status_code_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_StatusCodeFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_status_code_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_duration_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_DurationFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_DurationFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_DurationFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_duration_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_DurationFilter* sub = (struct envoy_config_filter_accesslog_v2_DurationFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_duration_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_DurationFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_duration_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_not_health_check_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_NotHealthCheckFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_NotHealthCheckFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_not_health_check_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter* sub = (struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_not_health_check_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_not_health_check_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_traceable_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_TraceableFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_TraceableFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_TraceableFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_traceable_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_TraceableFilter* sub = (struct envoy_config_filter_accesslog_v2_TraceableFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_traceable_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_TraceableFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_traceable_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_runtime_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_RuntimeFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_RuntimeFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_RuntimeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_runtime_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_RuntimeFilter* sub = (struct envoy_config_filter_accesslog_v2_RuntimeFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_runtime_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_RuntimeFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_runtime_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_and_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_AndFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_AndFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 6);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AndFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_and_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AndFilter* sub = (struct envoy_config_filter_accesslog_v2_AndFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_and_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_AndFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AndFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_and_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_or_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_OrFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_OrFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 7);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_OrFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_or_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_OrFilter* sub = (struct envoy_config_filter_accesslog_v2_OrFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_or_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_OrFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_OrFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_or_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_header_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_HeaderFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_HeaderFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 8);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_HeaderFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_header_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_HeaderFilter* sub = (struct envoy_config_filter_accesslog_v2_HeaderFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_header_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_HeaderFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_header_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_response_flag_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_ResponseFlagFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_ResponseFlagFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 9);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ResponseFlagFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_response_flag_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ResponseFlagFilter* sub = (struct envoy_config_filter_accesslog_v2_ResponseFlagFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_response_flag_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ResponseFlagFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_response_flag_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_grpc_status_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_GrpcStatusFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_GrpcStatusFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 10);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_GrpcStatusFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_grpc_status_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_GrpcStatusFilter* sub = (struct envoy_config_filter_accesslog_v2_GrpcStatusFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_grpc_status_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_GrpcStatusFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_grpc_status_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_extension_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_ExtensionFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_ExtensionFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 11);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ExtensionFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_extension_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ExtensionFilter* sub = (struct envoy_config_filter_accesslog_v2_ExtensionFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_extension_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ExtensionFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_extension_filter(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.ComparisonFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ComparisonFilter *envoy_config_filter_accesslog_v2_ComparisonFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ComparisonFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ComparisonFilter *envoy_config_filter_accesslog_v2_ComparisonFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ComparisonFilter *ret = envoy_config_filter_accesslog_v2_ComparisonFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ComparisonFilter_serialize(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_config_filter_accesslog_v2_ComparisonFilter_op(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeUInt32* envoy_config_filter_accesslog_v2_ComparisonFilter_value(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeUInt32*, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_ComparisonFilter_set_op(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ComparisonFilter_set_value(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, struct envoy_api_v2_core_RuntimeUInt32* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeUInt32*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeUInt32* envoy_config_filter_accesslog_v2_ComparisonFilter_mutable_value(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeUInt32* sub = (struct envoy_api_v2_core_RuntimeUInt32*)envoy_config_filter_accesslog_v2_ComparisonFilter_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeUInt32*)upb_msg_new(&envoy_api_v2_core_RuntimeUInt32_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ComparisonFilter_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.StatusCodeFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_StatusCodeFilter *envoy_config_filter_accesslog_v2_StatusCodeFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_StatusCodeFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_StatusCodeFilter *envoy_config_filter_accesslog_v2_StatusCodeFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_StatusCodeFilter *ret = envoy_config_filter_accesslog_v2_StatusCodeFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_StatusCodeFilter_serialize(const envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_StatusCodeFilter_comparison(const envoy_config_filter_accesslog_v2_StatusCodeFilter *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_StatusCodeFilter_set_comparison(envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, envoy_config_filter_accesslog_v2_ComparisonFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_StatusCodeFilter_mutable_comparison(envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ComparisonFilter* sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)envoy_config_filter_accesslog_v2_StatusCodeFilter_comparison(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_StatusCodeFilter_set_comparison(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.DurationFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_DurationFilter *envoy_config_filter_accesslog_v2_DurationFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_DurationFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_DurationFilter *envoy_config_filter_accesslog_v2_DurationFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_DurationFilter *ret = envoy_config_filter_accesslog_v2_DurationFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_DurationFilter_serialize(const envoy_config_filter_accesslog_v2_DurationFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_DurationFilter_comparison(const envoy_config_filter_accesslog_v2_DurationFilter *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_DurationFilter_set_comparison(envoy_config_filter_accesslog_v2_DurationFilter *msg, envoy_config_filter_accesslog_v2_ComparisonFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_DurationFilter_mutable_comparison(envoy_config_filter_accesslog_v2_DurationFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ComparisonFilter* sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)envoy_config_filter_accesslog_v2_DurationFilter_comparison(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_DurationFilter_set_comparison(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.NotHealthCheckFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_NotHealthCheckFilter *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_NotHealthCheckFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_NotHealthCheckFilter *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_NotHealthCheckFilter *ret = envoy_config_filter_accesslog_v2_NotHealthCheckFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_serialize(const envoy_config_filter_accesslog_v2_NotHealthCheckFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena, len);
+}
+
+
+
+/* envoy.config.filter.accesslog.v2.TraceableFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_TraceableFilter *envoy_config_filter_accesslog_v2_TraceableFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_TraceableFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_TraceableFilter *envoy_config_filter_accesslog_v2_TraceableFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_TraceableFilter *ret = envoy_config_filter_accesslog_v2_TraceableFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_TraceableFilter_serialize(const envoy_config_filter_accesslog_v2_TraceableFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena, len);
+}
+
+
+
+/* envoy.config.filter.accesslog.v2.RuntimeFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_RuntimeFilter *envoy_config_filter_accesslog_v2_RuntimeFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_RuntimeFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_RuntimeFilter *envoy_config_filter_accesslog_v2_RuntimeFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_RuntimeFilter *ret = envoy_config_filter_accesslog_v2_RuntimeFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_RuntimeFilter_serialize(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_RuntimeFilter_runtime_key(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_config_filter_accesslog_v2_RuntimeFilter_percent_sampled(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_RuntimeFilter_use_independent_randomness(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_runtime_key(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_percent_sampled(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_config_filter_accesslog_v2_RuntimeFilter_mutable_percent_sampled(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_config_filter_accesslog_v2_RuntimeFilter_percent_sampled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_RuntimeFilter_set_percent_sampled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_use_independent_randomness(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.accesslog.v2.AndFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AndFilter *envoy_config_filter_accesslog_v2_AndFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AndFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_AndFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AndFilter *envoy_config_filter_accesslog_v2_AndFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AndFilter *ret = envoy_config_filter_accesslog_v2_AndFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AndFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AndFilter_serialize(const envoy_config_filter_accesslog_v2_AndFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AndFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* const* envoy_config_filter_accesslog_v2_AndFilter_filters(const envoy_config_filter_accesslog_v2_AndFilter *msg, size_t *len) { return (const envoy_config_filter_accesslog_v2_AccessLogFilter* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_AndFilter_mutable_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, size_t *len) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_AndFilter_resize_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AndFilter_add_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.OrFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_OrFilter *envoy_config_filter_accesslog_v2_OrFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_OrFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_OrFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_OrFilter *envoy_config_filter_accesslog_v2_OrFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_OrFilter *ret = envoy_config_filter_accesslog_v2_OrFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_OrFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_OrFilter_serialize(const envoy_config_filter_accesslog_v2_OrFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_OrFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* const* envoy_config_filter_accesslog_v2_OrFilter_filters(const envoy_config_filter_accesslog_v2_OrFilter *msg, size_t *len) { return (const envoy_config_filter_accesslog_v2_AccessLogFilter* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_OrFilter_mutable_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, size_t *len) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_OrFilter_resize_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_OrFilter_add_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.HeaderFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_HeaderFilter *envoy_config_filter_accesslog_v2_HeaderFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_HeaderFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_HeaderFilter *envoy_config_filter_accesslog_v2_HeaderFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_HeaderFilter *ret = envoy_config_filter_accesslog_v2_HeaderFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_HeaderFilter_serialize(const envoy_config_filter_accesslog_v2_HeaderFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_route_HeaderMatcher* envoy_config_filter_accesslog_v2_HeaderFilter_header(const envoy_config_filter_accesslog_v2_HeaderFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_route_HeaderMatcher*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_HeaderFilter_set_header(envoy_config_filter_accesslog_v2_HeaderFilter *msg, struct envoy_api_v2_route_HeaderMatcher* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_route_HeaderMatcher*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_config_filter_accesslog_v2_HeaderFilter_mutable_header(envoy_config_filter_accesslog_v2_HeaderFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)envoy_config_filter_accesslog_v2_HeaderFilter_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_HeaderFilter_set_header(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.ResponseFlagFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ResponseFlagFilter *envoy_config_filter_accesslog_v2_ResponseFlagFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ResponseFlagFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ResponseFlagFilter *envoy_config_filter_accesslog_v2_ResponseFlagFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ResponseFlagFilter *ret = envoy_config_filter_accesslog_v2_ResponseFlagFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ResponseFlagFilter_serialize(const envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_config_filter_accesslog_v2_ResponseFlagFilter_flags(const envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE upb_strview* envoy_config_filter_accesslog_v2_ResponseFlagFilter_mutable_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* envoy_config_filter_accesslog_v2_ResponseFlagFilter_resize_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ResponseFlagFilter_add_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.config.filter.accesslog.v2.GrpcStatusFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_GrpcStatusFilter *envoy_config_filter_accesslog_v2_GrpcStatusFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_GrpcStatusFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_GrpcStatusFilter *envoy_config_filter_accesslog_v2_GrpcStatusFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter *ret = envoy_config_filter_accesslog_v2_GrpcStatusFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_GrpcStatusFilter_serialize(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* envoy_config_filter_accesslog_v2_GrpcStatusFilter_statuses(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_GrpcStatusFilter_exclude(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE int32_t* envoy_config_filter_accesslog_v2_GrpcStatusFilter_mutable_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE int32_t* envoy_config_filter_accesslog_v2_GrpcStatusFilter_resize_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(8, 8), UPB_TYPE_ENUM, arena);
+}
+UPB_INLINE bool envoy_config_filter_accesslog_v2_GrpcStatusFilter_add_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(8, 8), UPB_TYPE_ENUM, &val, arena);
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_GrpcStatusFilter_set_exclude(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.accesslog.v2.ExtensionFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter *envoy_config_filter_accesslog_v2_ExtensionFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ExtensionFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter *envoy_config_filter_accesslog_v2_ExtensionFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ExtensionFilter *ret = envoy_config_filter_accesslog_v2_ExtensionFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ExtensionFilter_serialize(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_config = 2,
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_typed_config = 3,
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_case(const envoy_config_filter_accesslog_v2_ExtensionFilter* msg) { return (envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_ExtensionFilter_name(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ExtensionFilter_has_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_ExtensionFilter_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ExtensionFilter_has_typed_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_accesslog_v2_ExtensionFilter_typed_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_name(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_ExtensionFilter_mutable_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_accesslog_v2_ExtensionFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ExtensionFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_typed_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_accesslog_v2_ExtensionFilter_mutable_typed_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_accesslog_v2_ExtensionFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ExtensionFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h
new file mode 100644
index 0000000..d650a9e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h	
@@ -0,0 +1,1096 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_
+#define ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig;
+struct envoy_config_filter_network_http_connection_manager_v2_Rds;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_Rds envoy_config_filter_network_http_connection_manager_v2_Rds;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds envoy_config_filter_network_http_connection_manager_v2_ScopedRds;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter envoy_config_filter_network_http_connection_manager_v2_HttpFilter;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_Rds_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit;
+struct envoy_api_v2_RouteConfiguration;
+struct envoy_api_v2_ScopedRouteConfiguration;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_config_filter_accesslog_v2_AccessLog;
+struct envoy_type_Percent;
+struct envoy_type_tracing_v2_CustomTag;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_RouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLog_msginit;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_AUTO = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP1 = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP2 = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP3 = 3
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_CodecType;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SANITIZE = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_FORWARD_ONLY = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_APPEND_FORWARD = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SANITIZE_SET = 3,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ALWAYS_FORWARD_ONLY = 4
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ForwardClientCertDetails;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_OVERWRITE = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_APPEND_IF_ABSENT = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_PASS_THROUGH = 2
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ServerHeaderTransformation;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_INGRESS = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_EGRESS = 1
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_OperationName;
+
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_rds = 3,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_route_config = 4,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_scoped_routes = 31,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_case(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager* msg) { return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(140, 248)); }
+
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_codec_type(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stat_prefix(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 40)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_rds(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 3); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_Rds* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_rds(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_Rds*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_route_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 4); }
+UPB_INLINE const struct envoy_api_v2_RouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const struct envoy_api_v2_RouteConfiguration*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 4, NULL); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_filters(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const*)_upb_array_accessor(msg, UPB_SIZE(124, 216), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_user_agent(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(60, 88)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_tracing(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*, UPB_SIZE(64, 96)); }
+UPB_INLINE const struct envoy_api_v2_core_Http1ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(68, 104)); }
+UPB_INLINE const struct envoy_api_v2_core_Http2ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http2_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_server_name(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 56)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_idle_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(76, 120)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_drain_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(80, 128)); }
+UPB_INLINE const struct envoy_config_filter_accesslog_v2_AccessLog* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_access_log(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const struct envoy_config_filter_accesslog_v2_AccessLog* const*)_upb_array_accessor(msg, UPB_SIZE(128, 224), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_use_remote_address(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(84, 136)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_generate_request_id(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(88, 144)); }
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_forward_client_cert_details(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_current_client_cert_details(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*, UPB_SIZE(92, 152)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_proxy_100_continue(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)); }
+UPB_INLINE uint32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_xff_num_trusted_hops(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_represent_ipv4_remote_address_as_ipv4_mapped_ipv6(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(29, 29)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_skip_xff_append(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(30, 30)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_via(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 72)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_upgrade_configs(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* const*)_upb_array_accessor(msg, UPB_SIZE(132, 232), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stream_idle_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(96, 160)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_internal_address_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*, UPB_SIZE(100, 168)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_delayed_close_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(104, 176)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_request_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(108, 184)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_max_request_headers_kb(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(112, 192)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_normalize_path(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(116, 200)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_scoped_routes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 31); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_scoped_routes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 31, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_preserve_external_request_id(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(31, 31)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_merge_slashes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(32, 32)); }
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_server_header_transformation(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_HttpProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_common_http_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(120, 208)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_codec_type(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stat_prefix(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_rds(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_Rds* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_Rds*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 3);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_Rds* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_rds(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_Rds* sub = (struct envoy_config_filter_network_http_connection_manager_v2_Rds*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_rds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_Rds*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_rds(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_route_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_RouteConfiguration* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_api_v2_RouteConfiguration*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 4);
+}
+UPB_INLINE struct envoy_api_v2_RouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_route_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_RouteConfiguration* sub = (struct envoy_api_v2_RouteConfiguration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_RouteConfiguration*)upb_msg_new(&envoy_api_v2_RouteConfiguration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_route_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(124, 216), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(124, 216), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(124, 216), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_add_user_agent(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(60, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_add_user_agent(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_user_agent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_add_user_agent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_tracing(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_tracing(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_tracing(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_tracing(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_Http1ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(68, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions* sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http2_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http2_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_server_name(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 56)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(76, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_drain_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(80, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_drain_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_drain_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_drain_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (struct envoy_config_filter_accesslog_v2_AccessLog**)_upb_array_mutable_accessor(msg, UPB_SIZE(128, 224), len);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_config_filter_accesslog_v2_AccessLog**)_upb_array_resize_accessor(msg, UPB_SIZE(128, 224), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLog* sub = (struct envoy_config_filter_accesslog_v2_AccessLog*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLog_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(128, 224), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_use_remote_address(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(84, 136)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_use_remote_address(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_use_remote_address(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_use_remote_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_generate_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(88, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_generate_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_generate_request_id(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_generate_request_id(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_forward_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_set_current_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*, UPB_SIZE(92, 152)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_set_current_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_current_client_cert_details(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_set_current_client_cert_details(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_proxy_100_continue(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_xff_num_trusted_hops(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_represent_ipv4_remote_address_as_ipv4_mapped_ipv6(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(29, 29)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_skip_xff_append(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(30, 30)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_via(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 72)) = value;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(132, 232), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(132, 232), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(132, 232), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stream_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(96, 160)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_stream_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stream_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stream_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_internal_address_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*, UPB_SIZE(100, 168)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_internal_address_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_internal_address_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_internal_address_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_delayed_close_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(104, 176)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_delayed_close_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_delayed_close_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_delayed_close_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_request_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(108, 184)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_request_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_request_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_request_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_max_request_headers_kb(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(112, 192)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_max_request_headers_kb(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_max_request_headers_kb(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_max_request_headers_kb(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_normalize_path(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(116, 200)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_normalize_path(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_normalize_path(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_normalize_path(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_scoped_routes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 31);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_scoped_routes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_scoped_routes(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_scoped_routes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_preserve_external_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(31, 31)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_merge_slashes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_server_header_transformation(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_common_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_HttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(120, 208)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_common_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpProtocolOptions* sub = (struct envoy_api_v2_core_HttpProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_common_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_common_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.Tracing */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_operation_name(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_request_headers_for_tags(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_client_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_random_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_overall_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(20, 32)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_verbose(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_max_path_tag_length(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct envoy_type_tracing_v2_CustomTag* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_custom_tags(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) { return (const struct envoy_type_tracing_v2_CustomTag* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_operation_name(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE upb_strview* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_resize_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_add_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_client_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_client_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_client_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_client_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_random_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_random_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_random_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_random_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_overall_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_overall_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_overall_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_overall_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_verbose(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_max_path_tag_length(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_max_path_tag_length(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_max_path_tag_length(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_max_path_tag_length(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_resize_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_add_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag* sub = (struct envoy_type_tracing_v2_CustomTag*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.InternalAddressConfig */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_unix_sockets(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_set_unix_sockets(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.SetCurrentClientCertDetails */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_subject(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_cert(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_dns(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_uri(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_chain(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_subject(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_mutable_subject(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_subject(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_subject(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_cert(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_dns(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_uri(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_chain(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.UpgradeConfig */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_upgrade_type(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_filters(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_enabled(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_upgrade_type(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_mutable_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_resize_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_add_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_enabled(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_mutable_enabled(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_enabled(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.Rds */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_Rds *envoy_config_filter_network_http_connection_manager_v2_Rds_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_Rds *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_Rds *envoy_config_filter_network_http_connection_manager_v2_Rds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_Rds *ret = envoy_config_filter_network_http_connection_manager_v2_Rds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_Rds_serialize(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_Rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_Rds_route_config_name(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_Rds_set_config_source(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_Rds_mutable_config_source(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_Rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_Rds_set_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_Rds_set_route_config_name(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRouteConfigurationsList */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_ScopedRouteConfiguration* const* envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_scoped_route_configurations(const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t *len) { return (const struct envoy_api_v2_ScopedRouteConfiguration* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration** envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_mutable_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t *len) {
+  return (struct envoy_api_v2_ScopedRouteConfiguration**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration** envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_resize_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_ScopedRouteConfiguration**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_add_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration* sub = (struct envoy_api_v2_ScopedRouteConfiguration*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_scoped_route_configurations_list = 4,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_scoped_rds = 5,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_name(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scope_key_builder(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_has_scoped_route_configurations_list(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_route_configurations_list(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_has_scoped_rds(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRds* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_rds(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRds*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 5, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_name(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scope_key_builder(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scope_key_builder(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scope_key_builder(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scope_key_builder(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_rds_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_route_configurations_list(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scoped_route_configurations_list(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_route_configurations_list(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_route_configurations_list(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_rds(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRds* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRds*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scoped_rds(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_rds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_rds(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* const* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_fragments(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder** envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_mutable_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder** envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_resize_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_add_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_header_value_extractor = 1,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_has_header_value_extractor(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_header_value_extractor(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_set_header_value_extractor(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_mutable_header_value_extractor(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_header_value_extractor(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_set_header_value_extractor(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder.HeaderValueExtractor */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_index = 3,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_element = 4,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_name(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element_separator(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_has_index(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 3); }
+UPB_INLINE uint32_t envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_index(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_READ_ONEOF(msg, uint32_t, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 3, 0); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_has_element(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_name(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element_separator(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_index(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, uint32_t value) {
+  UPB_WRITE_ONEOF(msg, uint32_t, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 3);
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_mutable_element(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder.HeaderValueExtractor.KvElement */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_separator(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_key(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_set_separator(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_set_key(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRds */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRds *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRds *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRds *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRds *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRds_scoped_rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRds_set_scoped_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRds_mutable_scoped_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_ScopedRds_scoped_rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRds_set_scoped_rds_config_source(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpFilter */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter *ret = envoy_config_filter_network_http_connection_manager_v2_HttpFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_config = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_typed_config = 4,
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_case(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* msg) { return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpFilter_name(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpFilter_has_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpFilter_has_typed_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_typed_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_name(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_mutable_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_typed_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_mutable_typed_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_network_http_connection_manager_v2_HttpFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h
new file mode 100644
index 0000000..05e318e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h	
@@ -0,0 +1,89 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/listener/v2/api_listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_
+#define ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_listener_v2_ApiListener;
+typedef struct envoy_config_listener_v2_ApiListener envoy_config_listener_v2_ApiListener;
+extern const upb_msglayout envoy_config_listener_v2_ApiListener_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* envoy.config.listener.v2.ApiListener */
+
+UPB_INLINE envoy_config_listener_v2_ApiListener *envoy_config_listener_v2_ApiListener_new(upb_arena *arena) {
+  return (envoy_config_listener_v2_ApiListener *)upb_msg_new(&envoy_config_listener_v2_ApiListener_msginit, arena);
+}
+UPB_INLINE envoy_config_listener_v2_ApiListener *envoy_config_listener_v2_ApiListener_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_listener_v2_ApiListener *ret = envoy_config_listener_v2_ApiListener_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_listener_v2_ApiListener_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_listener_v2_ApiListener_serialize(const envoy_config_listener_v2_ApiListener *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_listener_v2_ApiListener_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Any* envoy_config_listener_v2_ApiListener_api_listener(const envoy_config_listener_v2_ApiListener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_listener_v2_ApiListener_set_api_listener(envoy_config_listener_v2_ApiListener *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_listener_v2_ApiListener_mutable_api_listener(envoy_config_listener_v2_ApiListener *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_listener_v2_ApiListener_api_listener(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_listener_v2_ApiListener_set_api_listener(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h
new file mode 100644
index 0000000..55f49ac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h	
@@ -0,0 +1,74 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/discovery/v2/ads.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_
+#define ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_service_discovery_v2_AdsDummy;
+typedef struct envoy_service_discovery_v2_AdsDummy envoy_service_discovery_v2_AdsDummy;
+extern const upb_msglayout envoy_service_discovery_v2_AdsDummy_msginit;
+
+
+/* envoy.service.discovery.v2.AdsDummy */
+
+UPB_INLINE envoy_service_discovery_v2_AdsDummy *envoy_service_discovery_v2_AdsDummy_new(upb_arena *arena) {
+  return (envoy_service_discovery_v2_AdsDummy *)upb_msg_new(&envoy_service_discovery_v2_AdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_service_discovery_v2_AdsDummy *envoy_service_discovery_v2_AdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_discovery_v2_AdsDummy *ret = envoy_service_discovery_v2_AdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_discovery_v2_AdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_discovery_v2_AdsDummy_serialize(const envoy_service_discovery_v2_AdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_discovery_v2_AdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h
new file mode 100644
index 0000000..615cdb9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h	
@@ -0,0 +1,154 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/load_stats/v2/lrs.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_
+#define ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_service_load_stats_v2_LoadStatsRequest;
+struct envoy_service_load_stats_v2_LoadStatsResponse;
+typedef struct envoy_service_load_stats_v2_LoadStatsRequest envoy_service_load_stats_v2_LoadStatsRequest;
+typedef struct envoy_service_load_stats_v2_LoadStatsResponse envoy_service_load_stats_v2_LoadStatsResponse;
+extern const upb_msglayout envoy_service_load_stats_v2_LoadStatsRequest_msginit;
+extern const upb_msglayout envoy_service_load_stats_v2_LoadStatsResponse_msginit;
+struct envoy_api_v2_core_Node;
+struct envoy_api_v2_endpoint_ClusterStats;
+struct google_protobuf_Duration;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* envoy.service.load_stats.v2.LoadStatsRequest */
+
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsRequest *envoy_service_load_stats_v2_LoadStatsRequest_new(upb_arena *arena) {
+  return (envoy_service_load_stats_v2_LoadStatsRequest *)upb_msg_new(&envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena);
+}
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsRequest *envoy_service_load_stats_v2_LoadStatsRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_load_stats_v2_LoadStatsRequest *ret = envoy_service_load_stats_v2_LoadStatsRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_load_stats_v2_LoadStatsRequest_serialize(const envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_service_load_stats_v2_LoadStatsRequest_node(const envoy_service_load_stats_v2_LoadStatsRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_ClusterStats* const* envoy_service_load_stats_v2_LoadStatsRequest_cluster_stats(const envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t *len) { return (const struct envoy_api_v2_endpoint_ClusterStats* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsRequest_set_node(envoy_service_load_stats_v2_LoadStatsRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_service_load_stats_v2_LoadStatsRequest_mutable_node(envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_service_load_stats_v2_LoadStatsRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_service_load_stats_v2_LoadStatsRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats** envoy_service_load_stats_v2_LoadStatsRequest_mutable_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t *len) {
+  return (struct envoy_api_v2_endpoint_ClusterStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats** envoy_service_load_stats_v2_LoadStatsRequest_resize_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_endpoint_ClusterStats**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats* envoy_service_load_stats_v2_LoadStatsRequest_add_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_ClusterStats* sub = (struct envoy_api_v2_endpoint_ClusterStats*)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.service.load_stats.v2.LoadStatsResponse */
+
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsResponse *envoy_service_load_stats_v2_LoadStatsResponse_new(upb_arena *arena) {
+  return (envoy_service_load_stats_v2_LoadStatsResponse *)upb_msg_new(&envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena);
+}
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsResponse *envoy_service_load_stats_v2_LoadStatsResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_load_stats_v2_LoadStatsResponse *ret = envoy_service_load_stats_v2_LoadStatsResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_load_stats_v2_LoadStatsResponse_serialize(const envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_service_load_stats_v2_LoadStatsResponse_clusters(const envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_service_load_stats_v2_LoadStatsResponse_load_reporting_interval(const envoy_service_load_stats_v2_LoadStatsResponse *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_service_load_stats_v2_LoadStatsResponse_report_endpoint_granularity(const envoy_service_load_stats_v2_LoadStatsResponse *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE upb_strview* envoy_service_load_stats_v2_LoadStatsResponse_mutable_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* envoy_service_load_stats_v2_LoadStatsResponse_resize_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_service_load_stats_v2_LoadStatsResponse_add_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsResponse_set_load_reporting_interval(envoy_service_load_stats_v2_LoadStatsResponse *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_service_load_stats_v2_LoadStatsResponse_mutable_load_reporting_interval(envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_service_load_stats_v2_LoadStatsResponse_load_reporting_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_service_load_stats_v2_LoadStatsResponse_set_load_reporting_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsResponse_set_report_endpoint_granularity(envoy_service_load_stats_v2_LoadStatsResponse *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/http.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/http.upb.h
new file mode 100644
index 0000000..e3a30d8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/http.upb.h	
@@ -0,0 +1,60 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_HTTP_PROTO_UPB_H_
+#define ENVOY_TYPE_HTTP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  envoy_type_HTTP1 = 0,
+  envoy_type_HTTP2 = 1,
+  envoy_type_HTTP3 = 2
+} envoy_type_CodecClientType;
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_HTTP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h
new file mode 100644
index 0000000..6709595
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h	
@@ -0,0 +1,132 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/regex.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_
+#define ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_matcher_RegexMatcher;
+struct envoy_type_matcher_RegexMatcher_GoogleRE2;
+typedef struct envoy_type_matcher_RegexMatcher envoy_type_matcher_RegexMatcher;
+typedef struct envoy_type_matcher_RegexMatcher_GoogleRE2 envoy_type_matcher_RegexMatcher_GoogleRE2;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_GoogleRE2_msginit;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.type.matcher.RegexMatcher */
+
+UPB_INLINE envoy_type_matcher_RegexMatcher *envoy_type_matcher_RegexMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_RegexMatcher *)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_RegexMatcher *envoy_type_matcher_RegexMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_RegexMatcher *ret = envoy_type_matcher_RegexMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_RegexMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_RegexMatcher_serialize(const envoy_type_matcher_RegexMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_RegexMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_matcher_RegexMatcher_engine_type_google_re2 = 1,
+  envoy_type_matcher_RegexMatcher_engine_type_NOT_SET = 0
+} envoy_type_matcher_RegexMatcher_engine_type_oneofcases;
+UPB_INLINE envoy_type_matcher_RegexMatcher_engine_type_oneofcases envoy_type_matcher_RegexMatcher_engine_type_case(const envoy_type_matcher_RegexMatcher* msg) { return (envoy_type_matcher_RegexMatcher_engine_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_type_matcher_RegexMatcher_has_google_re2(const envoy_type_matcher_RegexMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const envoy_type_matcher_RegexMatcher_GoogleRE2* envoy_type_matcher_RegexMatcher_google_re2(const envoy_type_matcher_RegexMatcher *msg) { return UPB_READ_ONEOF(msg, const envoy_type_matcher_RegexMatcher_GoogleRE2*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE upb_strview envoy_type_matcher_RegexMatcher_regex(const envoy_type_matcher_RegexMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_RegexMatcher_set_google_re2(envoy_type_matcher_RegexMatcher *msg, envoy_type_matcher_RegexMatcher_GoogleRE2* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_matcher_RegexMatcher_GoogleRE2*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher_GoogleRE2* envoy_type_matcher_RegexMatcher_mutable_google_re2(envoy_type_matcher_RegexMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher_GoogleRE2* sub = (struct envoy_type_matcher_RegexMatcher_GoogleRE2*)envoy_type_matcher_RegexMatcher_google_re2(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher_GoogleRE2*)upb_msg_new(&envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_RegexMatcher_set_google_re2(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_matcher_RegexMatcher_set_regex(envoy_type_matcher_RegexMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.matcher.RegexMatcher.GoogleRE2 */
+
+UPB_INLINE envoy_type_matcher_RegexMatcher_GoogleRE2 *envoy_type_matcher_RegexMatcher_GoogleRE2_new(upb_arena *arena) {
+  return (envoy_type_matcher_RegexMatcher_GoogleRE2 *)upb_msg_new(&envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_RegexMatcher_GoogleRE2 *envoy_type_matcher_RegexMatcher_GoogleRE2_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_RegexMatcher_GoogleRE2 *ret = envoy_type_matcher_RegexMatcher_GoogleRE2_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_RegexMatcher_GoogleRE2_serialize(const envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_type_matcher_RegexMatcher_GoogleRE2_max_program_size(const envoy_type_matcher_RegexMatcher_GoogleRE2 *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_RegexMatcher_GoogleRE2_set_max_program_size(envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_type_matcher_RegexMatcher_GoogleRE2_mutable_max_program_size(envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_type_matcher_RegexMatcher_GoogleRE2_max_program_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_RegexMatcher_GoogleRE2_set_max_program_size(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h
new file mode 100644
index 0000000..9eefda4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h	
@@ -0,0 +1,157 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/string.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_
+#define ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_matcher_StringMatcher;
+struct envoy_type_matcher_ListStringMatcher;
+typedef struct envoy_type_matcher_StringMatcher envoy_type_matcher_StringMatcher;
+typedef struct envoy_type_matcher_ListStringMatcher envoy_type_matcher_ListStringMatcher;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_ListStringMatcher_msginit;
+struct envoy_type_matcher_RegexMatcher;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+
+
+/* envoy.type.matcher.StringMatcher */
+
+UPB_INLINE envoy_type_matcher_StringMatcher *envoy_type_matcher_StringMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_StringMatcher *)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_StringMatcher *envoy_type_matcher_StringMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_StringMatcher *ret = envoy_type_matcher_StringMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_StringMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_StringMatcher_serialize(const envoy_type_matcher_StringMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_StringMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_matcher_StringMatcher_match_pattern_exact = 1,
+  envoy_type_matcher_StringMatcher_match_pattern_prefix = 2,
+  envoy_type_matcher_StringMatcher_match_pattern_suffix = 3,
+  envoy_type_matcher_StringMatcher_match_pattern_regex = 4,
+  envoy_type_matcher_StringMatcher_match_pattern_safe_regex = 5,
+  envoy_type_matcher_StringMatcher_match_pattern_NOT_SET = 0
+} envoy_type_matcher_StringMatcher_match_pattern_oneofcases;
+UPB_INLINE envoy_type_matcher_StringMatcher_match_pattern_oneofcases envoy_type_matcher_StringMatcher_match_pattern_case(const envoy_type_matcher_StringMatcher* msg) { return (envoy_type_matcher_StringMatcher_match_pattern_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_exact(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_exact(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_prefix(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_prefix(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_suffix(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_suffix(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_regex(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_regex(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_safe_regex(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_type_matcher_StringMatcher_safe_regex(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 5, NULL); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_ignore_case(const envoy_type_matcher_StringMatcher *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_exact(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_prefix(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_suffix(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_regex(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_safe_regex(envoy_type_matcher_StringMatcher *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_type_matcher_StringMatcher_mutable_safe_regex(envoy_type_matcher_StringMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_type_matcher_StringMatcher_safe_regex(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_StringMatcher_set_safe_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_ignore_case(envoy_type_matcher_StringMatcher *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.matcher.ListStringMatcher */
+
+UPB_INLINE envoy_type_matcher_ListStringMatcher *envoy_type_matcher_ListStringMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_ListStringMatcher *)upb_msg_new(&envoy_type_matcher_ListStringMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_ListStringMatcher *envoy_type_matcher_ListStringMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_ListStringMatcher *ret = envoy_type_matcher_ListStringMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_ListStringMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_ListStringMatcher_serialize(const envoy_type_matcher_ListStringMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_ListStringMatcher_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_type_matcher_StringMatcher* const* envoy_type_matcher_ListStringMatcher_patterns(const envoy_type_matcher_ListStringMatcher *msg, size_t *len) { return (const envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_type_matcher_StringMatcher** envoy_type_matcher_ListStringMatcher_mutable_patterns(envoy_type_matcher_ListStringMatcher *msg, size_t *len) {
+  return (envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_type_matcher_StringMatcher** envoy_type_matcher_ListStringMatcher_resize_patterns(envoy_type_matcher_ListStringMatcher *msg, size_t len, upb_arena *arena) {
+  return (envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_type_matcher_ListStringMatcher_add_patterns(envoy_type_matcher_ListStringMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h
new file mode 100644
index 0000000..df64d1b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h	
@@ -0,0 +1,282 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/metadata/v2/metadata.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_
+#define ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_metadata_v2_MetadataKey;
+struct envoy_type_metadata_v2_MetadataKey_PathSegment;
+struct envoy_type_metadata_v2_MetadataKind;
+struct envoy_type_metadata_v2_MetadataKind_Request;
+struct envoy_type_metadata_v2_MetadataKind_Route;
+struct envoy_type_metadata_v2_MetadataKind_Cluster;
+struct envoy_type_metadata_v2_MetadataKind_Host;
+typedef struct envoy_type_metadata_v2_MetadataKey envoy_type_metadata_v2_MetadataKey;
+typedef struct envoy_type_metadata_v2_MetadataKey_PathSegment envoy_type_metadata_v2_MetadataKey_PathSegment;
+typedef struct envoy_type_metadata_v2_MetadataKind envoy_type_metadata_v2_MetadataKind;
+typedef struct envoy_type_metadata_v2_MetadataKind_Request envoy_type_metadata_v2_MetadataKind_Request;
+typedef struct envoy_type_metadata_v2_MetadataKind_Route envoy_type_metadata_v2_MetadataKind_Route;
+typedef struct envoy_type_metadata_v2_MetadataKind_Cluster envoy_type_metadata_v2_MetadataKind_Cluster;
+typedef struct envoy_type_metadata_v2_MetadataKind_Host envoy_type_metadata_v2_MetadataKind_Host;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_PathSegment_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Request_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Route_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Cluster_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Host_msginit;
+
+
+/* envoy.type.metadata.v2.MetadataKey */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKey *envoy_type_metadata_v2_MetadataKey_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey *)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey *envoy_type_metadata_v2_MetadataKey_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKey *ret = envoy_type_metadata_v2_MetadataKey_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKey_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKey_serialize(const envoy_type_metadata_v2_MetadataKey *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKey_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_metadata_v2_MetadataKey_key(const envoy_type_metadata_v2_MetadataKey *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKey_PathSegment* const* envoy_type_metadata_v2_MetadataKey_path(const envoy_type_metadata_v2_MetadataKey *msg, size_t *len) { return (const envoy_type_metadata_v2_MetadataKey_PathSegment* const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKey_set_key(envoy_type_metadata_v2_MetadataKey *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment** envoy_type_metadata_v2_MetadataKey_mutable_path(envoy_type_metadata_v2_MetadataKey *msg, size_t *len) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment** envoy_type_metadata_v2_MetadataKey_resize_path(envoy_type_metadata_v2_MetadataKey *msg, size_t len, upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKey_PathSegment* envoy_type_metadata_v2_MetadataKey_add_path(envoy_type_metadata_v2_MetadataKey *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKey_PathSegment* sub = (struct envoy_type_metadata_v2_MetadataKey_PathSegment*)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.type.metadata.v2.MetadataKey.PathSegment */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment *envoy_type_metadata_v2_MetadataKey_PathSegment_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment *)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment *envoy_type_metadata_v2_MetadataKey_PathSegment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKey_PathSegment *ret = envoy_type_metadata_v2_MetadataKey_PathSegment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKey_PathSegment_serialize(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_metadata_v2_MetadataKey_PathSegment_segment_key = 1,
+  envoy_type_metadata_v2_MetadataKey_PathSegment_segment_NOT_SET = 0
+} envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases;
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases envoy_type_metadata_v2_MetadataKey_PathSegment_segment_case(const envoy_type_metadata_v2_MetadataKey_PathSegment* msg) { return (envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKey_PathSegment_has_key(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_type_metadata_v2_MetadataKey_PathSegment_key(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKey_PathSegment_set_key(envoy_type_metadata_v2_MetadataKey_PathSegment *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+
+/* envoy.type.metadata.v2.MetadataKind */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind *envoy_type_metadata_v2_MetadataKind_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind *envoy_type_metadata_v2_MetadataKind_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind *ret = envoy_type_metadata_v2_MetadataKind_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_serialize(const envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_metadata_v2_MetadataKind_kind_request = 1,
+  envoy_type_metadata_v2_MetadataKind_kind_route = 2,
+  envoy_type_metadata_v2_MetadataKind_kind_cluster = 3,
+  envoy_type_metadata_v2_MetadataKind_kind_host = 4,
+  envoy_type_metadata_v2_MetadataKind_kind_NOT_SET = 0
+} envoy_type_metadata_v2_MetadataKind_kind_oneofcases;
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_kind_oneofcases envoy_type_metadata_v2_MetadataKind_kind_case(const envoy_type_metadata_v2_MetadataKind* msg) { return (envoy_type_metadata_v2_MetadataKind_kind_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_request(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Request* envoy_type_metadata_v2_MetadataKind_request(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Request*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_route(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Route* envoy_type_metadata_v2_MetadataKind_route(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Route*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_cluster(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Cluster* envoy_type_metadata_v2_MetadataKind_cluster(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Cluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_host(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Host* envoy_type_metadata_v2_MetadataKind_host(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Host*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_request(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Request* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Request*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Request* envoy_type_metadata_v2_MetadataKind_mutable_request(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Request* sub = (struct envoy_type_metadata_v2_MetadataKind_Request*)envoy_type_metadata_v2_MetadataKind_request(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Request*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Request_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_request(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_route(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Route* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Route*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Route* envoy_type_metadata_v2_MetadataKind_mutable_route(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Route* sub = (struct envoy_type_metadata_v2_MetadataKind_Route*)envoy_type_metadata_v2_MetadataKind_route(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Route*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Route_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_route(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_cluster(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Cluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Cluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Cluster* envoy_type_metadata_v2_MetadataKind_mutable_cluster(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Cluster* sub = (struct envoy_type_metadata_v2_MetadataKind_Cluster*)envoy_type_metadata_v2_MetadataKind_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Cluster*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_host(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Host* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Host*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Host* envoy_type_metadata_v2_MetadataKind_mutable_host(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Host* sub = (struct envoy_type_metadata_v2_MetadataKind_Host*)envoy_type_metadata_v2_MetadataKind_host(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Host*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Host_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_host(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.type.metadata.v2.MetadataKind.Request */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Request *envoy_type_metadata_v2_MetadataKind_Request_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Request *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Request_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Request *envoy_type_metadata_v2_MetadataKind_Request_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Request *ret = envoy_type_metadata_v2_MetadataKind_Request_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Request_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Request_serialize(const envoy_type_metadata_v2_MetadataKind_Request *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Request_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Route */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Route *envoy_type_metadata_v2_MetadataKind_Route_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Route *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Route_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Route *envoy_type_metadata_v2_MetadataKind_Route_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Route *ret = envoy_type_metadata_v2_MetadataKind_Route_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Route_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Route_serialize(const envoy_type_metadata_v2_MetadataKind_Route *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Route_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Cluster */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Cluster *envoy_type_metadata_v2_MetadataKind_Cluster_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Cluster *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Cluster *envoy_type_metadata_v2_MetadataKind_Cluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Cluster *ret = envoy_type_metadata_v2_MetadataKind_Cluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Cluster_serialize(const envoy_type_metadata_v2_MetadataKind_Cluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Host */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Host *envoy_type_metadata_v2_MetadataKind_Host_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Host *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Host_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Host *envoy_type_metadata_v2_MetadataKind_Host_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Host *ret = envoy_type_metadata_v2_MetadataKind_Host_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Host_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Host_serialize(const envoy_type_metadata_v2_MetadataKind_Host *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Host_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/percent.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/percent.upb.h
new file mode 100644
index 0000000..58d5788
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/percent.upb.h	
@@ -0,0 +1,111 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/percent.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_PERCENT_PROTO_UPB_H_
+#define ENVOY_TYPE_PERCENT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_Percent;
+struct envoy_type_FractionalPercent;
+typedef struct envoy_type_Percent envoy_type_Percent;
+typedef struct envoy_type_FractionalPercent envoy_type_FractionalPercent;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+
+typedef enum {
+  envoy_type_FractionalPercent_HUNDRED = 0,
+  envoy_type_FractionalPercent_TEN_THOUSAND = 1,
+  envoy_type_FractionalPercent_MILLION = 2
+} envoy_type_FractionalPercent_DenominatorType;
+
+
+/* envoy.type.Percent */
+
+UPB_INLINE envoy_type_Percent *envoy_type_Percent_new(upb_arena *arena) {
+  return (envoy_type_Percent *)upb_msg_new(&envoy_type_Percent_msginit, arena);
+}
+UPB_INLINE envoy_type_Percent *envoy_type_Percent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Percent *ret = envoy_type_Percent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Percent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Percent_serialize(const envoy_type_Percent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Percent_msginit, arena, len);
+}
+
+UPB_INLINE double envoy_type_Percent_value(const envoy_type_Percent *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_Percent_set_value(envoy_type_Percent *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.FractionalPercent */
+
+UPB_INLINE envoy_type_FractionalPercent *envoy_type_FractionalPercent_new(upb_arena *arena) {
+  return (envoy_type_FractionalPercent *)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+}
+UPB_INLINE envoy_type_FractionalPercent *envoy_type_FractionalPercent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_FractionalPercent *ret = envoy_type_FractionalPercent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_FractionalPercent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_FractionalPercent_serialize(const envoy_type_FractionalPercent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_FractionalPercent_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_type_FractionalPercent_numerator(const envoy_type_FractionalPercent *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t envoy_type_FractionalPercent_denominator(const envoy_type_FractionalPercent *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_FractionalPercent_set_numerator(envoy_type_FractionalPercent *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_type_FractionalPercent_set_denominator(envoy_type_FractionalPercent *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_PERCENT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/range.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/range.upb.h
new file mode 100644
index 0000000..ccd7256
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/range.upb.h	
@@ -0,0 +1,136 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/range.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_RANGE_PROTO_UPB_H_
+#define ENVOY_TYPE_RANGE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_Int64Range;
+struct envoy_type_Int32Range;
+struct envoy_type_DoubleRange;
+typedef struct envoy_type_Int64Range envoy_type_Int64Range;
+typedef struct envoy_type_Int32Range envoy_type_Int32Range;
+typedef struct envoy_type_DoubleRange envoy_type_DoubleRange;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_Int32Range_msginit;
+extern const upb_msglayout envoy_type_DoubleRange_msginit;
+
+
+/* envoy.type.Int64Range */
+
+UPB_INLINE envoy_type_Int64Range *envoy_type_Int64Range_new(upb_arena *arena) {
+  return (envoy_type_Int64Range *)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+}
+UPB_INLINE envoy_type_Int64Range *envoy_type_Int64Range_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Int64Range *ret = envoy_type_Int64Range_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Int64Range_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Int64Range_serialize(const envoy_type_Int64Range *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Int64Range_msginit, arena, len);
+}
+
+UPB_INLINE int64_t envoy_type_Int64Range_start(const envoy_type_Int64Range *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t envoy_type_Int64Range_end(const envoy_type_Int64Range *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_Int64Range_set_start(envoy_type_Int64Range *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_Int64Range_set_end(envoy_type_Int64Range *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.type.Int32Range */
+
+UPB_INLINE envoy_type_Int32Range *envoy_type_Int32Range_new(upb_arena *arena) {
+  return (envoy_type_Int32Range *)upb_msg_new(&envoy_type_Int32Range_msginit, arena);
+}
+UPB_INLINE envoy_type_Int32Range *envoy_type_Int32Range_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Int32Range *ret = envoy_type_Int32Range_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Int32Range_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Int32Range_serialize(const envoy_type_Int32Range *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Int32Range_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_type_Int32Range_start(const envoy_type_Int32Range *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t envoy_type_Int32Range_end(const envoy_type_Int32Range *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void envoy_type_Int32Range_set_start(envoy_type_Int32Range *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_Int32Range_set_end(envoy_type_Int32Range *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+
+/* envoy.type.DoubleRange */
+
+UPB_INLINE envoy_type_DoubleRange *envoy_type_DoubleRange_new(upb_arena *arena) {
+  return (envoy_type_DoubleRange *)upb_msg_new(&envoy_type_DoubleRange_msginit, arena);
+}
+UPB_INLINE envoy_type_DoubleRange *envoy_type_DoubleRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_DoubleRange *ret = envoy_type_DoubleRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_DoubleRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_DoubleRange_serialize(const envoy_type_DoubleRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_DoubleRange_msginit, arena, len);
+}
+
+UPB_INLINE double envoy_type_DoubleRange_start(const envoy_type_DoubleRange *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+UPB_INLINE double envoy_type_DoubleRange_end(const envoy_type_DoubleRange *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_DoubleRange_set_start(envoy_type_DoubleRange *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_DoubleRange_set_end(envoy_type_DoubleRange *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_RANGE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h
new file mode 100644
index 0000000..5ab842e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h	
@@ -0,0 +1,86 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/semantic_version.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_
+#define ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_SemanticVersion;
+typedef struct envoy_type_SemanticVersion envoy_type_SemanticVersion;
+extern const upb_msglayout envoy_type_SemanticVersion_msginit;
+
+
+/* envoy.type.SemanticVersion */
+
+UPB_INLINE envoy_type_SemanticVersion *envoy_type_SemanticVersion_new(upb_arena *arena) {
+  return (envoy_type_SemanticVersion *)upb_msg_new(&envoy_type_SemanticVersion_msginit, arena);
+}
+UPB_INLINE envoy_type_SemanticVersion *envoy_type_SemanticVersion_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_SemanticVersion *ret = envoy_type_SemanticVersion_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_SemanticVersion_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_SemanticVersion_serialize(const envoy_type_SemanticVersion *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_SemanticVersion_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_type_SemanticVersion_major_number(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t envoy_type_SemanticVersion_minor_number(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE uint32_t envoy_type_SemanticVersion_patch(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_SemanticVersion_set_major_number(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_SemanticVersion_set_minor_number(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void envoy_type_SemanticVersion_set_patch(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h
new file mode 100644
index 0000000..a4f642d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h	
@@ -0,0 +1,273 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/tracing/v2/custom_tag.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_
+#define ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_tracing_v2_CustomTag;
+struct envoy_type_tracing_v2_CustomTag_Literal;
+struct envoy_type_tracing_v2_CustomTag_Environment;
+struct envoy_type_tracing_v2_CustomTag_Header;
+struct envoy_type_tracing_v2_CustomTag_Metadata;
+typedef struct envoy_type_tracing_v2_CustomTag envoy_type_tracing_v2_CustomTag;
+typedef struct envoy_type_tracing_v2_CustomTag_Literal envoy_type_tracing_v2_CustomTag_Literal;
+typedef struct envoy_type_tracing_v2_CustomTag_Environment envoy_type_tracing_v2_CustomTag_Environment;
+typedef struct envoy_type_tracing_v2_CustomTag_Header envoy_type_tracing_v2_CustomTag_Header;
+typedef struct envoy_type_tracing_v2_CustomTag_Metadata envoy_type_tracing_v2_CustomTag_Metadata;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Literal_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Environment_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Header_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Metadata_msginit;
+struct envoy_type_metadata_v2_MetadataKey;
+struct envoy_type_metadata_v2_MetadataKind;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_msginit;
+
+
+/* envoy.type.tracing.v2.CustomTag */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag *envoy_type_tracing_v2_CustomTag_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag *envoy_type_tracing_v2_CustomTag_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag *ret = envoy_type_tracing_v2_CustomTag_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_serialize(const envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_tracing_v2_CustomTag_type_literal = 2,
+  envoy_type_tracing_v2_CustomTag_type_environment = 3,
+  envoy_type_tracing_v2_CustomTag_type_request_header = 4,
+  envoy_type_tracing_v2_CustomTag_type_metadata = 5,
+  envoy_type_tracing_v2_CustomTag_type_NOT_SET = 0
+} envoy_type_tracing_v2_CustomTag_type_oneofcases;
+UPB_INLINE envoy_type_tracing_v2_CustomTag_type_oneofcases envoy_type_tracing_v2_CustomTag_type_case(const envoy_type_tracing_v2_CustomTag* msg) { return (envoy_type_tracing_v2_CustomTag_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_tag(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_literal(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Literal* envoy_type_tracing_v2_CustomTag_literal(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Literal*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_environment(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Environment* envoy_type_tracing_v2_CustomTag_environment(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Environment*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_request_header(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Header* envoy_type_tracing_v2_CustomTag_request_header(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Header*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_metadata(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Metadata* envoy_type_tracing_v2_CustomTag_metadata(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Metadata*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_tag(envoy_type_tracing_v2_CustomTag *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_literal(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Literal* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Literal*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Literal* envoy_type_tracing_v2_CustomTag_mutable_literal(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Literal* sub = (struct envoy_type_tracing_v2_CustomTag_Literal*)envoy_type_tracing_v2_CustomTag_literal(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Literal*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Literal_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_literal(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_environment(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Environment* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Environment*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Environment* envoy_type_tracing_v2_CustomTag_mutable_environment(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Environment* sub = (struct envoy_type_tracing_v2_CustomTag_Environment*)envoy_type_tracing_v2_CustomTag_environment(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Environment*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Environment_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_environment(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_request_header(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Header* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Header*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Header* envoy_type_tracing_v2_CustomTag_mutable_request_header(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Header* sub = (struct envoy_type_tracing_v2_CustomTag_Header*)envoy_type_tracing_v2_CustomTag_request_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Header*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Header_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_request_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_metadata(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Metadata* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Metadata*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Metadata* envoy_type_tracing_v2_CustomTag_mutable_metadata(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Metadata* sub = (struct envoy_type_tracing_v2_CustomTag_Metadata*)envoy_type_tracing_v2_CustomTag_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Metadata*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_metadata(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Literal */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Literal *envoy_type_tracing_v2_CustomTag_Literal_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Literal *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Literal_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Literal *envoy_type_tracing_v2_CustomTag_Literal_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Literal *ret = envoy_type_tracing_v2_CustomTag_Literal_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Literal_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Literal_serialize(const envoy_type_tracing_v2_CustomTag_Literal *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Literal_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Literal_value(const envoy_type_tracing_v2_CustomTag_Literal *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Literal_set_value(envoy_type_tracing_v2_CustomTag_Literal *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Environment */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Environment *envoy_type_tracing_v2_CustomTag_Environment_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Environment *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Environment_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Environment *envoy_type_tracing_v2_CustomTag_Environment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Environment *ret = envoy_type_tracing_v2_CustomTag_Environment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Environment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Environment_serialize(const envoy_type_tracing_v2_CustomTag_Environment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Environment_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Environment_name(const envoy_type_tracing_v2_CustomTag_Environment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Environment_default_value(const envoy_type_tracing_v2_CustomTag_Environment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Environment_set_name(envoy_type_tracing_v2_CustomTag_Environment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Environment_set_default_value(envoy_type_tracing_v2_CustomTag_Environment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Header */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Header *envoy_type_tracing_v2_CustomTag_Header_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Header *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Header_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Header *envoy_type_tracing_v2_CustomTag_Header_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Header *ret = envoy_type_tracing_v2_CustomTag_Header_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Header_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Header_serialize(const envoy_type_tracing_v2_CustomTag_Header *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Header_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Header_name(const envoy_type_tracing_v2_CustomTag_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Header_default_value(const envoy_type_tracing_v2_CustomTag_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Header_set_name(envoy_type_tracing_v2_CustomTag_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Header_set_default_value(envoy_type_tracing_v2_CustomTag_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Metadata */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Metadata *envoy_type_tracing_v2_CustomTag_Metadata_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Metadata *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Metadata *envoy_type_tracing_v2_CustomTag_Metadata_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Metadata *ret = envoy_type_tracing_v2_CustomTag_Metadata_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Metadata_serialize(const envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_metadata_v2_MetadataKind* envoy_type_tracing_v2_CustomTag_Metadata_kind(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_metadata_v2_MetadataKind*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_type_metadata_v2_MetadataKey* envoy_type_tracing_v2_CustomTag_Metadata_metadata_key(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_metadata_v2_MetadataKey*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Metadata_default_value(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_kind(envoy_type_tracing_v2_CustomTag_Metadata *msg, struct envoy_type_metadata_v2_MetadataKind* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_metadata_v2_MetadataKind*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind* envoy_type_tracing_v2_CustomTag_Metadata_mutable_kind(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind* sub = (struct envoy_type_metadata_v2_MetadataKind*)envoy_type_tracing_v2_CustomTag_Metadata_kind(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_Metadata_set_kind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_metadata_key(envoy_type_tracing_v2_CustomTag_Metadata *msg, struct envoy_type_metadata_v2_MetadataKey* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_metadata_v2_MetadataKey*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKey* envoy_type_tracing_v2_CustomTag_Metadata_mutable_metadata_key(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKey* sub = (struct envoy_type_metadata_v2_MetadataKey*)envoy_type_tracing_v2_CustomTag_Metadata_metadata_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKey*)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_Metadata_set_metadata_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_default_value(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/gogoproto/gogo.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/gogoproto/gogo.upb.h
new file mode 100644
index 0000000..ae58343
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/gogoproto/gogo.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     gogoproto/gogo.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOGOPROTO_GOGO_PROTO_UPB_H_
+#define GOGOPROTO_GOGO_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOGOPROTO_GOGO_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/annotations.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/annotations.upb.h
new file mode 100644
index 0000000..cf2abb6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/annotations.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/annotations.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_
+#define GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/http.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/http.upb.h
new file mode 100644
index 0000000..f654409
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/api/http.upb.h	
@@ -0,0 +1,214 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_API_HTTP_PROTO_UPB_H_
+#define GOOGLE_API_HTTP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_api_Http;
+struct google_api_HttpRule;
+struct google_api_CustomHttpPattern;
+typedef struct google_api_Http google_api_Http;
+typedef struct google_api_HttpRule google_api_HttpRule;
+typedef struct google_api_CustomHttpPattern google_api_CustomHttpPattern;
+extern const upb_msglayout google_api_Http_msginit;
+extern const upb_msglayout google_api_HttpRule_msginit;
+extern const upb_msglayout google_api_CustomHttpPattern_msginit;
+
+
+/* google.api.Http */
+
+UPB_INLINE google_api_Http *google_api_Http_new(upb_arena *arena) {
+  return (google_api_Http *)upb_msg_new(&google_api_Http_msginit, arena);
+}
+UPB_INLINE google_api_Http *google_api_Http_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_Http *ret = google_api_Http_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_Http_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_Http_serialize(const google_api_Http *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_Http_msginit, arena, len);
+}
+
+UPB_INLINE const google_api_HttpRule* const* google_api_Http_rules(const google_api_Http *msg, size_t *len) { return (const google_api_HttpRule* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool google_api_Http_fully_decode_reserved_expansion(const google_api_Http *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE google_api_HttpRule** google_api_Http_mutable_rules(google_api_Http *msg, size_t *len) {
+  return (google_api_HttpRule**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_api_HttpRule** google_api_Http_resize_rules(google_api_Http *msg, size_t len, upb_arena *arena) {
+  return (google_api_HttpRule**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_api_HttpRule* google_api_Http_add_rules(google_api_Http *msg, upb_arena *arena) {
+  struct google_api_HttpRule* sub = (struct google_api_HttpRule*)upb_msg_new(&google_api_HttpRule_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_api_Http_set_fully_decode_reserved_expansion(google_api_Http *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.api.HttpRule */
+
+UPB_INLINE google_api_HttpRule *google_api_HttpRule_new(upb_arena *arena) {
+  return (google_api_HttpRule *)upb_msg_new(&google_api_HttpRule_msginit, arena);
+}
+UPB_INLINE google_api_HttpRule *google_api_HttpRule_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_HttpRule *ret = google_api_HttpRule_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_HttpRule_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_HttpRule_serialize(const google_api_HttpRule *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_HttpRule_msginit, arena, len);
+}
+
+typedef enum {
+  google_api_HttpRule_pattern_get = 2,
+  google_api_HttpRule_pattern_put = 3,
+  google_api_HttpRule_pattern_post = 4,
+  google_api_HttpRule_pattern_delete = 5,
+  google_api_HttpRule_pattern_patch = 6,
+  google_api_HttpRule_pattern_custom = 8,
+  google_api_HttpRule_pattern_NOT_SET = 0
+} google_api_HttpRule_pattern_oneofcases;
+UPB_INLINE google_api_HttpRule_pattern_oneofcases google_api_HttpRule_pattern_case(const google_api_HttpRule* msg) { return (google_api_HttpRule_pattern_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(36, 72)); }
+
+UPB_INLINE upb_strview google_api_HttpRule_selector(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool google_api_HttpRule_has_get(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 2); }
+UPB_INLINE upb_strview google_api_HttpRule_get(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_put(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 3); }
+UPB_INLINE upb_strview google_api_HttpRule_put(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_post(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 4); }
+UPB_INLINE upb_strview google_api_HttpRule_post(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_delete(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 5); }
+UPB_INLINE upb_strview google_api_HttpRule_delete(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_patch(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 6); }
+UPB_INLINE upb_strview google_api_HttpRule_patch(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 6, upb_strview_make("", strlen(""))); }
+UPB_INLINE upb_strview google_api_HttpRule_body(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE bool google_api_HttpRule_has_custom(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 8); }
+UPB_INLINE const google_api_CustomHttpPattern* google_api_HttpRule_custom(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, const google_api_CustomHttpPattern*, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 8, NULL); }
+UPB_INLINE const google_api_HttpRule* const* google_api_HttpRule_additional_bindings(const google_api_HttpRule *msg, size_t *len) { return (const google_api_HttpRule* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview google_api_HttpRule_response_body(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void google_api_HttpRule_set_selector(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_api_HttpRule_set_get(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 2);
+}
+UPB_INLINE void google_api_HttpRule_set_put(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 3);
+}
+UPB_INLINE void google_api_HttpRule_set_post(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 4);
+}
+UPB_INLINE void google_api_HttpRule_set_delete(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 5);
+}
+UPB_INLINE void google_api_HttpRule_set_patch(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 6);
+}
+UPB_INLINE void google_api_HttpRule_set_body(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void google_api_HttpRule_set_custom(google_api_HttpRule *msg, google_api_CustomHttpPattern* value) {
+  UPB_WRITE_ONEOF(msg, google_api_CustomHttpPattern*, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 8);
+}
+UPB_INLINE struct google_api_CustomHttpPattern* google_api_HttpRule_mutable_custom(google_api_HttpRule *msg, upb_arena *arena) {
+  struct google_api_CustomHttpPattern* sub = (struct google_api_CustomHttpPattern*)google_api_HttpRule_custom(msg);
+  if (sub == NULL) {
+    sub = (struct google_api_CustomHttpPattern*)upb_msg_new(&google_api_CustomHttpPattern_msginit, arena);
+    if (!sub) return NULL;
+    google_api_HttpRule_set_custom(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_api_HttpRule** google_api_HttpRule_mutable_additional_bindings(google_api_HttpRule *msg, size_t *len) {
+  return (google_api_HttpRule**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE google_api_HttpRule** google_api_HttpRule_resize_additional_bindings(google_api_HttpRule *msg, size_t len, upb_arena *arena) {
+  return (google_api_HttpRule**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_api_HttpRule* google_api_HttpRule_add_additional_bindings(google_api_HttpRule *msg, upb_arena *arena) {
+  struct google_api_HttpRule* sub = (struct google_api_HttpRule*)upb_msg_new(&google_api_HttpRule_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_api_HttpRule_set_response_body(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+
+/* google.api.CustomHttpPattern */
+
+UPB_INLINE google_api_CustomHttpPattern *google_api_CustomHttpPattern_new(upb_arena *arena) {
+  return (google_api_CustomHttpPattern *)upb_msg_new(&google_api_CustomHttpPattern_msginit, arena);
+}
+UPB_INLINE google_api_CustomHttpPattern *google_api_CustomHttpPattern_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_CustomHttpPattern *ret = google_api_CustomHttpPattern_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_CustomHttpPattern_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_CustomHttpPattern_serialize(const google_api_CustomHttpPattern *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_CustomHttpPattern_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_api_CustomHttpPattern_kind(const google_api_CustomHttpPattern *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_api_CustomHttpPattern_path(const google_api_CustomHttpPattern *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_api_CustomHttpPattern_set_kind(google_api_CustomHttpPattern *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_api_CustomHttpPattern_set_path(google_api_CustomHttpPattern *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_API_HTTP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/any.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/any.upb.h
new file mode 100644
index 0000000..4a8c34c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/any.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/any.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Any;
+typedef struct google_protobuf_Any google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* google.protobuf.Any */
+
+UPB_INLINE google_protobuf_Any *google_protobuf_Any_new(upb_arena *arena) {
+  return (google_protobuf_Any *)upb_msg_new(&google_protobuf_Any_msginit, arena);
+}
+UPB_INLINE google_protobuf_Any *google_protobuf_Any_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Any *ret = google_protobuf_Any_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Any_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Any_serialize(const google_protobuf_Any *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Any_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_Any_type_url(const google_protobuf_Any *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_protobuf_Any_value(const google_protobuf_Any *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_protobuf_Any_set_type_url(google_protobuf_Any *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Any_set_value(google_protobuf_Any *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h
new file mode 100644
index 0000000..b78e968
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h	
@@ -0,0 +1,1714 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/descriptor.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_FileDescriptorSet;
+struct google_protobuf_FileDescriptorProto;
+struct google_protobuf_DescriptorProto;
+struct google_protobuf_DescriptorProto_ExtensionRange;
+struct google_protobuf_DescriptorProto_ReservedRange;
+struct google_protobuf_ExtensionRangeOptions;
+struct google_protobuf_FieldDescriptorProto;
+struct google_protobuf_OneofDescriptorProto;
+struct google_protobuf_EnumDescriptorProto;
+struct google_protobuf_EnumDescriptorProto_EnumReservedRange;
+struct google_protobuf_EnumValueDescriptorProto;
+struct google_protobuf_ServiceDescriptorProto;
+struct google_protobuf_MethodDescriptorProto;
+struct google_protobuf_FileOptions;
+struct google_protobuf_MessageOptions;
+struct google_protobuf_FieldOptions;
+struct google_protobuf_OneofOptions;
+struct google_protobuf_EnumOptions;
+struct google_protobuf_EnumValueOptions;
+struct google_protobuf_ServiceOptions;
+struct google_protobuf_MethodOptions;
+struct google_protobuf_UninterpretedOption;
+struct google_protobuf_UninterpretedOption_NamePart;
+struct google_protobuf_SourceCodeInfo;
+struct google_protobuf_SourceCodeInfo_Location;
+struct google_protobuf_GeneratedCodeInfo;
+struct google_protobuf_GeneratedCodeInfo_Annotation;
+typedef struct google_protobuf_FileDescriptorSet google_protobuf_FileDescriptorSet;
+typedef struct google_protobuf_FileDescriptorProto google_protobuf_FileDescriptorProto;
+typedef struct google_protobuf_DescriptorProto google_protobuf_DescriptorProto;
+typedef struct google_protobuf_DescriptorProto_ExtensionRange google_protobuf_DescriptorProto_ExtensionRange;
+typedef struct google_protobuf_DescriptorProto_ReservedRange google_protobuf_DescriptorProto_ReservedRange;
+typedef struct google_protobuf_ExtensionRangeOptions google_protobuf_ExtensionRangeOptions;
+typedef struct google_protobuf_FieldDescriptorProto google_protobuf_FieldDescriptorProto;
+typedef struct google_protobuf_OneofDescriptorProto google_protobuf_OneofDescriptorProto;
+typedef struct google_protobuf_EnumDescriptorProto google_protobuf_EnumDescriptorProto;
+typedef struct google_protobuf_EnumDescriptorProto_EnumReservedRange google_protobuf_EnumDescriptorProto_EnumReservedRange;
+typedef struct google_protobuf_EnumValueDescriptorProto google_protobuf_EnumValueDescriptorProto;
+typedef struct google_protobuf_ServiceDescriptorProto google_protobuf_ServiceDescriptorProto;
+typedef struct google_protobuf_MethodDescriptorProto google_protobuf_MethodDescriptorProto;
+typedef struct google_protobuf_FileOptions google_protobuf_FileOptions;
+typedef struct google_protobuf_MessageOptions google_protobuf_MessageOptions;
+typedef struct google_protobuf_FieldOptions google_protobuf_FieldOptions;
+typedef struct google_protobuf_OneofOptions google_protobuf_OneofOptions;
+typedef struct google_protobuf_EnumOptions google_protobuf_EnumOptions;
+typedef struct google_protobuf_EnumValueOptions google_protobuf_EnumValueOptions;
+typedef struct google_protobuf_ServiceOptions google_protobuf_ServiceOptions;
+typedef struct google_protobuf_MethodOptions google_protobuf_MethodOptions;
+typedef struct google_protobuf_UninterpretedOption google_protobuf_UninterpretedOption;
+typedef struct google_protobuf_UninterpretedOption_NamePart google_protobuf_UninterpretedOption_NamePart;
+typedef struct google_protobuf_SourceCodeInfo google_protobuf_SourceCodeInfo;
+typedef struct google_protobuf_SourceCodeInfo_Location google_protobuf_SourceCodeInfo_Location;
+typedef struct google_protobuf_GeneratedCodeInfo google_protobuf_GeneratedCodeInfo;
+typedef struct google_protobuf_GeneratedCodeInfo_Annotation google_protobuf_GeneratedCodeInfo_Annotation;
+extern const upb_msglayout google_protobuf_FileDescriptorSet_msginit;
+extern const upb_msglayout google_protobuf_FileDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_ExtensionRange_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_ReservedRange_msginit;
+extern const upb_msglayout google_protobuf_ExtensionRangeOptions_msginit;
+extern const upb_msglayout google_protobuf_FieldDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_OneofDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_EnumDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit;
+extern const upb_msglayout google_protobuf_EnumValueDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_ServiceDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_MethodDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_FileOptions_msginit;
+extern const upb_msglayout google_protobuf_MessageOptions_msginit;
+extern const upb_msglayout google_protobuf_FieldOptions_msginit;
+extern const upb_msglayout google_protobuf_OneofOptions_msginit;
+extern const upb_msglayout google_protobuf_EnumOptions_msginit;
+extern const upb_msglayout google_protobuf_EnumValueOptions_msginit;
+extern const upb_msglayout google_protobuf_ServiceOptions_msginit;
+extern const upb_msglayout google_protobuf_MethodOptions_msginit;
+extern const upb_msglayout google_protobuf_UninterpretedOption_msginit;
+extern const upb_msglayout google_protobuf_UninterpretedOption_NamePart_msginit;
+extern const upb_msglayout google_protobuf_SourceCodeInfo_msginit;
+extern const upb_msglayout google_protobuf_SourceCodeInfo_Location_msginit;
+extern const upb_msglayout google_protobuf_GeneratedCodeInfo_msginit;
+extern const upb_msglayout google_protobuf_GeneratedCodeInfo_Annotation_msginit;
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_LABEL_OPTIONAL = 1,
+  google_protobuf_FieldDescriptorProto_LABEL_REQUIRED = 2,
+  google_protobuf_FieldDescriptorProto_LABEL_REPEATED = 3
+} google_protobuf_FieldDescriptorProto_Label;
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_TYPE_DOUBLE = 1,
+  google_protobuf_FieldDescriptorProto_TYPE_FLOAT = 2,
+  google_protobuf_FieldDescriptorProto_TYPE_INT64 = 3,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT64 = 4,
+  google_protobuf_FieldDescriptorProto_TYPE_INT32 = 5,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED64 = 6,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED32 = 7,
+  google_protobuf_FieldDescriptorProto_TYPE_BOOL = 8,
+  google_protobuf_FieldDescriptorProto_TYPE_STRING = 9,
+  google_protobuf_FieldDescriptorProto_TYPE_GROUP = 10,
+  google_protobuf_FieldDescriptorProto_TYPE_MESSAGE = 11,
+  google_protobuf_FieldDescriptorProto_TYPE_BYTES = 12,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT32 = 13,
+  google_protobuf_FieldDescriptorProto_TYPE_ENUM = 14,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED32 = 15,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED64 = 16,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT32 = 17,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT64 = 18
+} google_protobuf_FieldDescriptorProto_Type;
+
+typedef enum {
+  google_protobuf_FieldOptions_STRING = 0,
+  google_protobuf_FieldOptions_CORD = 1,
+  google_protobuf_FieldOptions_STRING_PIECE = 2
+} google_protobuf_FieldOptions_CType;
+
+typedef enum {
+  google_protobuf_FieldOptions_JS_NORMAL = 0,
+  google_protobuf_FieldOptions_JS_STRING = 1,
+  google_protobuf_FieldOptions_JS_NUMBER = 2
+} google_protobuf_FieldOptions_JSType;
+
+typedef enum {
+  google_protobuf_FileOptions_SPEED = 1,
+  google_protobuf_FileOptions_CODE_SIZE = 2,
+  google_protobuf_FileOptions_LITE_RUNTIME = 3
+} google_protobuf_FileOptions_OptimizeMode;
+
+typedef enum {
+  google_protobuf_MethodOptions_IDEMPOTENCY_UNKNOWN = 0,
+  google_protobuf_MethodOptions_NO_SIDE_EFFECTS = 1,
+  google_protobuf_MethodOptions_IDEMPOTENT = 2
+} google_protobuf_MethodOptions_IdempotencyLevel;
+
+
+/* google.protobuf.FileDescriptorSet */
+
+UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_new(upb_arena *arena) {
+  return (google_protobuf_FileDescriptorSet *)upb_msg_new(&google_protobuf_FileDescriptorSet_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileDescriptorSet *ret = google_protobuf_FileDescriptorSet_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorSet_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileDescriptorSet_serialize(const google_protobuf_FileDescriptorSet *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorSet_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_FileDescriptorProto* const* google_protobuf_FileDescriptorSet_file(const google_protobuf_FileDescriptorSet *msg, size_t *len) { return (const google_protobuf_FileDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_FileDescriptorProto** google_protobuf_FileDescriptorSet_mutable_file(google_protobuf_FileDescriptorSet *msg, size_t *len) {
+  return (google_protobuf_FileDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_FileDescriptorProto** google_protobuf_FileDescriptorSet_resize_file(google_protobuf_FileDescriptorSet *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FileDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FileDescriptorProto* google_protobuf_FileDescriptorSet_add_file(google_protobuf_FileDescriptorSet *msg, upb_arena *arena) {
+  struct google_protobuf_FileDescriptorProto* sub = (struct google_protobuf_FileDescriptorProto*)upb_msg_new(&google_protobuf_FileDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FileDescriptorProto */
+
+UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_FileDescriptorProto *)upb_msg_new(&google_protobuf_FileDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileDescriptorProto *ret = google_protobuf_FileDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileDescriptorProto_serialize(const google_protobuf_FileDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_name(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_name(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_package(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_package(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* google_protobuf_FileDescriptorProto_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const google_protobuf_DescriptorProto* const* google_protobuf_FileDescriptorProto_message_type(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto* const* google_protobuf_FileDescriptorProto_enum_type(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE const google_protobuf_ServiceDescriptorProto* const* google_protobuf_FileDescriptorProto_service(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_ServiceDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_FileDescriptorProto_extension(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(52, 104), len); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_options(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_options(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_FileOptions*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_source_code_info(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_source_code_info(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_SourceCodeInfo*, UPB_SIZE(32, 64)); }
+UPB_INLINE int32_t const* google_protobuf_FileDescriptorProto_public_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(56, 112), len); }
+UPB_INLINE int32_t const* google_protobuf_FileDescriptorProto_weak_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(60, 120), len); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_syntax(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_syntax(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_name(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_package(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE upb_strview* google_protobuf_FileDescriptorProto_mutable_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE upb_strview* google_protobuf_FileDescriptorProto_resize_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_dependency(google_protobuf_FileDescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_FileDescriptorProto_mutable_message_type(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_FileDescriptorProto_resize_message_type(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto* google_protobuf_FileDescriptorProto_add_message_type(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto* sub = (struct google_protobuf_DescriptorProto*)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_FileDescriptorProto_mutable_enum_type(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_FileDescriptorProto_resize_enum_type(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto* google_protobuf_FileDescriptorProto_add_enum_type(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto* sub = (struct google_protobuf_EnumDescriptorProto*)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto** google_protobuf_FileDescriptorProto_mutable_service(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_ServiceDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto** google_protobuf_FileDescriptorProto_resize_service(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_ServiceDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_ServiceDescriptorProto* google_protobuf_FileDescriptorProto_add_service(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_ServiceDescriptorProto* sub = (struct google_protobuf_ServiceDescriptorProto*)upb_msg_new(&google_protobuf_ServiceDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_FileDescriptorProto_mutable_extension(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 104), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_FileDescriptorProto_resize_extension(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(52, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_FileDescriptorProto_add_extension(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_options(google_protobuf_FileDescriptorProto *msg, google_protobuf_FileOptions* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, google_protobuf_FileOptions*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_mutable_options(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FileOptions* sub = (struct google_protobuf_FileOptions*)google_protobuf_FileDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_FileOptions*)upb_msg_new(&google_protobuf_FileOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FileDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_source_code_info(google_protobuf_FileDescriptorProto *msg, google_protobuf_SourceCodeInfo* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, google_protobuf_SourceCodeInfo*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_mutable_source_code_info(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_SourceCodeInfo* sub = (struct google_protobuf_SourceCodeInfo*)google_protobuf_FileDescriptorProto_source_code_info(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_SourceCodeInfo*)upb_msg_new(&google_protobuf_SourceCodeInfo_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FileDescriptorProto_set_source_code_info(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_mutable_public_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 112), len);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_resize_public_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(56, 112), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_public_dependency(google_protobuf_FileDescriptorProto *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 112), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_mutable_weak_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(60, 120), len);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_resize_weak_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(60, 120), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_weak_dependency(google_protobuf_FileDescriptorProto *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(60, 120), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_syntax(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+
+/* google.protobuf.DescriptorProto */
+
+UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto *)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto *ret = google_protobuf_DescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_serialize(const google_protobuf_DescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_has_name(const google_protobuf_DescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_DescriptorProto_name(const google_protobuf_DescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_DescriptorProto_field(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const google_protobuf_DescriptorProto* const* google_protobuf_DescriptorProto_nested_type(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto* const* google_protobuf_DescriptorProto_enum_type(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const google_protobuf_DescriptorProto_ExtensionRange* const* google_protobuf_DescriptorProto_extension_range(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto_ExtensionRange* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_DescriptorProto_extension(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE bool google_protobuf_DescriptorProto_has_options(const google_protobuf_DescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_MessageOptions* google_protobuf_DescriptorProto_options(const google_protobuf_DescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_MessageOptions*, UPB_SIZE(12, 24)); }
+UPB_INLINE const google_protobuf_OneofDescriptorProto* const* google_protobuf_DescriptorProto_oneof_decl(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_OneofDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const google_protobuf_DescriptorProto_ReservedRange* const* google_protobuf_DescriptorProto_reserved_range(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto_ReservedRange* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* google_protobuf_DescriptorProto_reserved_name(const google_protobuf_DescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_set_name(google_protobuf_DescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_mutable_field(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_resize_field(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_DescriptorProto_add_field(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_DescriptorProto_mutable_nested_type(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_DescriptorProto_resize_nested_type(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto* google_protobuf_DescriptorProto_add_nested_type(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto* sub = (struct google_protobuf_DescriptorProto*)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_DescriptorProto_mutable_enum_type(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_DescriptorProto_resize_enum_type(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto* google_protobuf_DescriptorProto_add_enum_type(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto* sub = (struct google_protobuf_EnumDescriptorProto*)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange** google_protobuf_DescriptorProto_mutable_extension_range(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto_ExtensionRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange** google_protobuf_DescriptorProto_resize_extension_range(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ExtensionRange**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto_ExtensionRange* google_protobuf_DescriptorProto_add_extension_range(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto_ExtensionRange* sub = (struct google_protobuf_DescriptorProto_ExtensionRange*)upb_msg_new(&google_protobuf_DescriptorProto_ExtensionRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_mutable_extension(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_resize_extension(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_DescriptorProto_add_extension(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_set_options(google_protobuf_DescriptorProto *msg, google_protobuf_MessageOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_MessageOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_MessageOptions* google_protobuf_DescriptorProto_mutable_options(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MessageOptions* sub = (struct google_protobuf_MessageOptions*)google_protobuf_DescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_MessageOptions*)upb_msg_new(&google_protobuf_MessageOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_DescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto** google_protobuf_DescriptorProto_mutable_oneof_decl(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_OneofDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto** google_protobuf_DescriptorProto_resize_oneof_decl(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_OneofDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_OneofDescriptorProto* google_protobuf_DescriptorProto_add_oneof_decl(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_OneofDescriptorProto* sub = (struct google_protobuf_OneofDescriptorProto*)upb_msg_new(&google_protobuf_OneofDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange** google_protobuf_DescriptorProto_mutable_reserved_range(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto_ReservedRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange** google_protobuf_DescriptorProto_resize_reserved_range(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ReservedRange**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto_ReservedRange* google_protobuf_DescriptorProto_add_reserved_range(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto_ReservedRange* sub = (struct google_protobuf_DescriptorProto_ReservedRange*)upb_msg_new(&google_protobuf_DescriptorProto_ReservedRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* google_protobuf_DescriptorProto_mutable_reserved_name(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* google_protobuf_DescriptorProto_resize_reserved_name(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_DescriptorProto_add_reserved_name(google_protobuf_DescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.DescriptorProto.ExtensionRange */
+
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ExtensionRange *)upb_msg_new(&google_protobuf_DescriptorProto_ExtensionRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto_ExtensionRange *ret = google_protobuf_DescriptorProto_ExtensionRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ExtensionRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_ExtensionRange_serialize(const google_protobuf_DescriptorProto_ExtensionRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ExtensionRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_start(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ExtensionRange_start(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_end(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ExtensionRange_end(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_options(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_options(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, const google_protobuf_ExtensionRangeOptions*, UPB_SIZE(12, 16)); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_start(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_end(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_options(google_protobuf_DescriptorProto_ExtensionRange *msg, google_protobuf_ExtensionRangeOptions* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, google_protobuf_ExtensionRangeOptions*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_mutable_options(google_protobuf_DescriptorProto_ExtensionRange *msg, upb_arena *arena) {
+  struct google_protobuf_ExtensionRangeOptions* sub = (struct google_protobuf_ExtensionRangeOptions*)google_protobuf_DescriptorProto_ExtensionRange_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ExtensionRangeOptions*)upb_msg_new(&google_protobuf_ExtensionRangeOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_DescriptorProto_ExtensionRange_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.DescriptorProto.ReservedRange */
+
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ReservedRange *)upb_msg_new(&google_protobuf_DescriptorProto_ReservedRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto_ReservedRange *ret = google_protobuf_DescriptorProto_ReservedRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ReservedRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_ReservedRange_serialize(const google_protobuf_DescriptorProto_ReservedRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ReservedRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_ReservedRange_has_start(const google_protobuf_DescriptorProto_ReservedRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ReservedRange_start(const google_protobuf_DescriptorProto_ReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ReservedRange_has_end(const google_protobuf_DescriptorProto_ReservedRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ReservedRange_end(const google_protobuf_DescriptorProto_ReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_ReservedRange_set_start(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ReservedRange_set_end(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* google.protobuf.ExtensionRangeOptions */
+
+UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_new(upb_arena *arena) {
+  return (google_protobuf_ExtensionRangeOptions *)upb_msg_new(&google_protobuf_ExtensionRangeOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ExtensionRangeOptions *ret = google_protobuf_ExtensionRangeOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ExtensionRangeOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ExtensionRangeOptions_serialize(const google_protobuf_ExtensionRangeOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ExtensionRangeOptions_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_ExtensionRangeOptions_uninterpreted_option(const google_protobuf_ExtensionRangeOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ExtensionRangeOptions_mutable_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ExtensionRangeOptions_resize_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_ExtensionRangeOptions_add_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FieldDescriptorProto */
+
+UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto *)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FieldDescriptorProto *ret = google_protobuf_FieldDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FieldDescriptorProto_serialize(const google_protobuf_FieldDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FieldDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_extendee(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_extendee(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_number(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_number(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_label(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_label(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_type(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_type(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_type_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_type_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_default_value(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_default_value(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_options(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE const google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_options(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_FieldOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_oneof_index(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_oneof_index(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(28, 28)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_json_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_json_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)); }
+
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_extendee(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_number(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_label(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_type(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_type_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_default_value(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_options(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldOptions* value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, google_protobuf_FieldOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_mutable_options(google_protobuf_FieldDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldOptions* sub = (struct google_protobuf_FieldOptions*)google_protobuf_FieldDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_FieldOptions*)upb_msg_new(&google_protobuf_FieldOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FieldDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_oneof_index(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(28, 28)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_json_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)) = value;
+}
+
+/* google.protobuf.OneofDescriptorProto */
+
+UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_OneofDescriptorProto *)upb_msg_new(&google_protobuf_OneofDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_OneofDescriptorProto *ret = google_protobuf_OneofDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_OneofDescriptorProto_serialize(const google_protobuf_OneofDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_OneofDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_OneofDescriptorProto_has_name(const google_protobuf_OneofDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_OneofDescriptorProto_name(const google_protobuf_OneofDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_OneofDescriptorProto_has_options(const google_protobuf_OneofDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_options(const google_protobuf_OneofDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_OneofOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void google_protobuf_OneofDescriptorProto_set_name(google_protobuf_OneofDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_OneofDescriptorProto_set_options(google_protobuf_OneofDescriptorProto *msg, google_protobuf_OneofOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_OneofOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_mutable_options(google_protobuf_OneofDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_OneofOptions* sub = (struct google_protobuf_OneofOptions*)google_protobuf_OneofDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_OneofOptions*)upb_msg_new(&google_protobuf_OneofOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_OneofDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.EnumDescriptorProto */
+
+UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto *)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumDescriptorProto *ret = google_protobuf_EnumDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumDescriptorProto_serialize(const google_protobuf_EnumDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_has_name(const google_protobuf_EnumDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_EnumDescriptorProto_name(const google_protobuf_EnumDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_EnumValueDescriptorProto* const* google_protobuf_EnumDescriptorProto_value(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumValueDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_has_options(const google_protobuf_EnumDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_options(const google_protobuf_EnumDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_EnumOptions*, UPB_SIZE(12, 24)); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto_EnumReservedRange* const* google_protobuf_EnumDescriptorProto_reserved_range(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto_EnumReservedRange* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* google_protobuf_EnumDescriptorProto_reserved_name(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+
+UPB_INLINE void google_protobuf_EnumDescriptorProto_set_name(google_protobuf_EnumDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto** google_protobuf_EnumDescriptorProto_mutable_value(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumValueDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto** google_protobuf_EnumDescriptorProto_resize_value(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumValueDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumValueDescriptorProto* google_protobuf_EnumDescriptorProto_add_value(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumValueDescriptorProto* sub = (struct google_protobuf_EnumValueDescriptorProto*)upb_msg_new(&google_protobuf_EnumValueDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_EnumDescriptorProto_set_options(google_protobuf_EnumDescriptorProto *msg, google_protobuf_EnumOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_EnumOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_mutable_options(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumOptions* sub = (struct google_protobuf_EnumOptions*)google_protobuf_EnumDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_EnumOptions*)upb_msg_new(&google_protobuf_EnumOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_EnumDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange** google_protobuf_EnumDescriptorProto_mutable_reserved_range(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange** google_protobuf_EnumDescriptorProto_resize_reserved_range(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto_EnumReservedRange* google_protobuf_EnumDescriptorProto_add_reserved_range(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto_EnumReservedRange* sub = (struct google_protobuf_EnumDescriptorProto_EnumReservedRange*)upb_msg_new(&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* google_protobuf_EnumDescriptorProto_mutable_reserved_name(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* google_protobuf_EnumDescriptorProto_resize_reserved_name(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_add_reserved_name(google_protobuf_EnumDescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.EnumDescriptorProto.EnumReservedRange */
+
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_new(upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange *)upb_msg_new(&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumDescriptorProto_EnumReservedRange *ret = google_protobuf_EnumDescriptorProto_EnumReservedRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumDescriptorProto_EnumReservedRange_serialize(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_EnumReservedRange_has_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_EnumReservedRange_has_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_start(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_end(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* google.protobuf.EnumValueDescriptorProto */
+
+UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_EnumValueDescriptorProto *)upb_msg_new(&google_protobuf_EnumValueDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumValueDescriptorProto *ret = google_protobuf_EnumValueDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumValueDescriptorProto_serialize(const google_protobuf_EnumValueDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumValueDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_name(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_EnumValueDescriptorProto_name(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_number(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_EnumValueDescriptorProto_number(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_options(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_options(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_EnumValueOptions*, UPB_SIZE(16, 24)); }
+
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_name(google_protobuf_EnumValueDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_number(google_protobuf_EnumValueDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_options(google_protobuf_EnumValueDescriptorProto *msg, google_protobuf_EnumValueOptions* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, google_protobuf_EnumValueOptions*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_mutable_options(google_protobuf_EnumValueDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumValueOptions* sub = (struct google_protobuf_EnumValueOptions*)google_protobuf_EnumValueDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_EnumValueOptions*)upb_msg_new(&google_protobuf_EnumValueOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_EnumValueDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.ServiceDescriptorProto */
+
+UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_ServiceDescriptorProto *)upb_msg_new(&google_protobuf_ServiceDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ServiceDescriptorProto *ret = google_protobuf_ServiceDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ServiceDescriptorProto_serialize(const google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ServiceDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_ServiceDescriptorProto_has_name(const google_protobuf_ServiceDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_ServiceDescriptorProto_name(const google_protobuf_ServiceDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_MethodDescriptorProto* const* google_protobuf_ServiceDescriptorProto_method(const google_protobuf_ServiceDescriptorProto *msg, size_t *len) { return (const google_protobuf_MethodDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE bool google_protobuf_ServiceDescriptorProto_has_options(const google_protobuf_ServiceDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_options(const google_protobuf_ServiceDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_ServiceOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void google_protobuf_ServiceDescriptorProto_set_name(google_protobuf_ServiceDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto** google_protobuf_ServiceDescriptorProto_mutable_method(google_protobuf_ServiceDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_MethodDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto** google_protobuf_ServiceDescriptorProto_resize_method(google_protobuf_ServiceDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_MethodDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_MethodDescriptorProto* google_protobuf_ServiceDescriptorProto_add_method(google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MethodDescriptorProto* sub = (struct google_protobuf_MethodDescriptorProto*)upb_msg_new(&google_protobuf_MethodDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_ServiceDescriptorProto_set_options(google_protobuf_ServiceDescriptorProto *msg, google_protobuf_ServiceOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_ServiceOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_mutable_options(google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_ServiceOptions* sub = (struct google_protobuf_ServiceOptions*)google_protobuf_ServiceDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ServiceOptions*)upb_msg_new(&google_protobuf_ServiceOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_ServiceDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.MethodDescriptorProto */
+
+UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_MethodDescriptorProto *)upb_msg_new(&google_protobuf_MethodDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MethodDescriptorProto *ret = google_protobuf_MethodDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MethodDescriptorProto_serialize(const google_protobuf_MethodDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MethodDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_name(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_name(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_input_type(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_input_type(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_output_type(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_output_type(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_options(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_options(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_MethodOptions*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_client_streaming(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_client_streaming(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_server_streaming(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_server_streaming(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_name(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_input_type(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_output_type(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_options(google_protobuf_MethodDescriptorProto *msg, google_protobuf_MethodOptions* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, google_protobuf_MethodOptions*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_mutable_options(google_protobuf_MethodDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MethodOptions* sub = (struct google_protobuf_MethodOptions*)google_protobuf_MethodDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_MethodOptions*)upb_msg_new(&google_protobuf_MethodOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_MethodDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_client_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_server_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* google.protobuf.FileOptions */
+
+UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_new(upb_arena *arena) {
+  return (google_protobuf_FileOptions *)upb_msg_new(&google_protobuf_FileOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileOptions *ret = google_protobuf_FileOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileOptions_serialize(const google_protobuf_FileOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FileOptions_has_java_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 11); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_java_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 32)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_outer_classname(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 12); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_java_outer_classname(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 48)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_optimize_for(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FileOptions_optimize_for(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_multiple_files(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_FileOptions_java_multiple_files(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_go_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 13); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_go_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 64)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_cc_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_FileOptions_cc_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_FileOptions_java_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(18, 18)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_py_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE bool google_protobuf_FileOptions_py_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(19, 19)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE bool google_protobuf_FileOptions_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(20, 20)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_deprecated(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE bool google_protobuf_FileOptions_deprecated(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(21, 21)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_string_check_utf8(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE bool google_protobuf_FileOptions_java_string_check_utf8(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(22, 22)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_cc_enable_arenas(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE bool google_protobuf_FileOptions_cc_enable_arenas(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(23, 23)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_objc_class_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 14); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_objc_class_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 80)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_csharp_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 15); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_csharp_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(60, 96)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_swift_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 16); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_swift_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(68, 112)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_class_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 17); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_class_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(76, 128)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 18); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(84, 144)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE bool google_protobuf_FileOptions_php_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_metadata_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 19); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_metadata_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(92, 160)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_ruby_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 20); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_ruby_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(100, 176)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_FileOptions_uninterpreted_option(const google_protobuf_FileOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(108, 192), len); }
+
+UPB_INLINE void google_protobuf_FileOptions_set_java_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 11);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_outer_classname(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 12);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 48)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_optimize_for(google_protobuf_FileOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_multiple_files(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_go_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 13);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 64)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_cc_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(18, 18)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_py_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(19, 19)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_generate_equals_and_hash(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_deprecated(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(21, 21)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_string_check_utf8(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(22, 22)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_cc_enable_arenas(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(23, 23)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_objc_class_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 14);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 80)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_csharp_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 15);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(60, 96)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_swift_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 16);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(68, 112)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_class_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 17);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(76, 128)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 18);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(84, 144)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_metadata_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 19);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(92, 160)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_ruby_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 20);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(100, 176)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FileOptions_mutable_uninterpreted_option(google_protobuf_FileOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(108, 192), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FileOptions_resize_uninterpreted_option(google_protobuf_FileOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(108, 192), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FileOptions_add_uninterpreted_option(google_protobuf_FileOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(108, 192), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.MessageOptions */
+
+UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_new(upb_arena *arena) {
+  return (google_protobuf_MessageOptions *)upb_msg_new(&google_protobuf_MessageOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MessageOptions *ret = google_protobuf_MessageOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MessageOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MessageOptions_serialize(const google_protobuf_MessageOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MessageOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MessageOptions_has_message_set_wire_format(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_MessageOptions_message_set_wire_format(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MessageOptions_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_deprecated(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_MessageOptions_deprecated(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_map_entry(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_MessageOptions_map_entry(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_MessageOptions_uninterpreted_option(const google_protobuf_MessageOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(8, 8), len); }
+
+UPB_INLINE void google_protobuf_MessageOptions_set_message_set_wire_format(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_no_standard_descriptor_accessor(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_deprecated(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_map_entry(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MessageOptions_mutable_uninterpreted_option(google_protobuf_MessageOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MessageOptions_resize_uninterpreted_option(google_protobuf_MessageOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MessageOptions_add_uninterpreted_option(google_protobuf_MessageOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FieldOptions */
+
+UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_new(upb_arena *arena) {
+  return (google_protobuf_FieldOptions *)upb_msg_new(&google_protobuf_FieldOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FieldOptions *ret = google_protobuf_FieldOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FieldOptions_serialize(const google_protobuf_FieldOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FieldOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FieldOptions_has_ctype(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FieldOptions_ctype(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_packed(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_FieldOptions_packed(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_deprecated(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_FieldOptions_deprecated(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_lazy(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE bool google_protobuf_FieldOptions_lazy(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_jstype(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_FieldOptions_jstype(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_weak(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE bool google_protobuf_FieldOptions_weak(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_FieldOptions_uninterpreted_option(const google_protobuf_FieldOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void google_protobuf_FieldOptions_set_ctype(google_protobuf_FieldOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_packed(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_deprecated(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_lazy(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_jstype(google_protobuf_FieldOptions *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_weak(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FieldOptions_mutable_uninterpreted_option(google_protobuf_FieldOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FieldOptions_resize_uninterpreted_option(google_protobuf_FieldOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FieldOptions_add_uninterpreted_option(google_protobuf_FieldOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.OneofOptions */
+
+UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_new(upb_arena *arena) {
+  return (google_protobuf_OneofOptions *)upb_msg_new(&google_protobuf_OneofOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_OneofOptions *ret = google_protobuf_OneofOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_OneofOptions_serialize(const google_protobuf_OneofOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_OneofOptions_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_OneofOptions_uninterpreted_option(const google_protobuf_OneofOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_OneofOptions_mutable_uninterpreted_option(google_protobuf_OneofOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_OneofOptions_resize_uninterpreted_option(google_protobuf_OneofOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_OneofOptions_add_uninterpreted_option(google_protobuf_OneofOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.EnumOptions */
+
+UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_new(upb_arena *arena) {
+  return (google_protobuf_EnumOptions *)upb_msg_new(&google_protobuf_EnumOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumOptions *ret = google_protobuf_EnumOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumOptions_serialize(const google_protobuf_EnumOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumOptions_has_allow_alias(const google_protobuf_EnumOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_EnumOptions_allow_alias(const google_protobuf_EnumOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_EnumOptions_has_deprecated(const google_protobuf_EnumOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_EnumOptions_deprecated(const google_protobuf_EnumOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_EnumOptions_uninterpreted_option(const google_protobuf_EnumOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_EnumOptions_set_allow_alias(google_protobuf_EnumOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_EnumOptions_set_deprecated(google_protobuf_EnumOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumOptions_mutable_uninterpreted_option(google_protobuf_EnumOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumOptions_resize_uninterpreted_option(google_protobuf_EnumOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumOptions_add_uninterpreted_option(google_protobuf_EnumOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.EnumValueOptions */
+
+UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_new(upb_arena *arena) {
+  return (google_protobuf_EnumValueOptions *)upb_msg_new(&google_protobuf_EnumValueOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumValueOptions *ret = google_protobuf_EnumValueOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumValueOptions_serialize(const google_protobuf_EnumValueOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumValueOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumValueOptions_has_deprecated(const google_protobuf_EnumValueOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_EnumValueOptions_deprecated(const google_protobuf_EnumValueOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_EnumValueOptions_uninterpreted_option(const google_protobuf_EnumValueOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_EnumValueOptions_set_deprecated(google_protobuf_EnumValueOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumValueOptions_mutable_uninterpreted_option(google_protobuf_EnumValueOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumValueOptions_resize_uninterpreted_option(google_protobuf_EnumValueOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumValueOptions_add_uninterpreted_option(google_protobuf_EnumValueOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.ServiceOptions */
+
+UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_new(upb_arena *arena) {
+  return (google_protobuf_ServiceOptions *)upb_msg_new(&google_protobuf_ServiceOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ServiceOptions *ret = google_protobuf_ServiceOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ServiceOptions_serialize(const google_protobuf_ServiceOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ServiceOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_ServiceOptions_has_deprecated(const google_protobuf_ServiceOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_ServiceOptions_deprecated(const google_protobuf_ServiceOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_ServiceOptions_uninterpreted_option(const google_protobuf_ServiceOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_ServiceOptions_set_deprecated(google_protobuf_ServiceOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ServiceOptions_mutable_uninterpreted_option(google_protobuf_ServiceOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ServiceOptions_resize_uninterpreted_option(google_protobuf_ServiceOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_ServiceOptions_add_uninterpreted_option(google_protobuf_ServiceOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.MethodOptions */
+
+UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_new(upb_arena *arena) {
+  return (google_protobuf_MethodOptions *)upb_msg_new(&google_protobuf_MethodOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MethodOptions *ret = google_protobuf_MethodOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MethodOptions_serialize(const google_protobuf_MethodOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MethodOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MethodOptions_has_deprecated(const google_protobuf_MethodOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MethodOptions_deprecated(const google_protobuf_MethodOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_MethodOptions_has_idempotency_level(const google_protobuf_MethodOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_MethodOptions_idempotency_level(const google_protobuf_MethodOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_MethodOptions_uninterpreted_option(const google_protobuf_MethodOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(20, 24), len); }
+
+UPB_INLINE void google_protobuf_MethodOptions_set_deprecated(google_protobuf_MethodOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_MethodOptions_set_idempotency_level(google_protobuf_MethodOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MethodOptions_mutable_uninterpreted_option(google_protobuf_MethodOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 24), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MethodOptions_resize_uninterpreted_option(google_protobuf_MethodOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MethodOptions_add_uninterpreted_option(google_protobuf_MethodOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.UninterpretedOption */
+
+UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_new(upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption *)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+}
+UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UninterpretedOption *ret = google_protobuf_UninterpretedOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UninterpretedOption_serialize(const google_protobuf_UninterpretedOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption_NamePart* const* google_protobuf_UninterpretedOption_name(const google_protobuf_UninterpretedOption *msg, size_t *len) { return (const google_protobuf_UninterpretedOption_NamePart* const*)_upb_array_accessor(msg, UPB_SIZE(56, 80), len); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_identifier_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_identifier_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_positive_int_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t google_protobuf_UninterpretedOption_positive_int_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_negative_int_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t google_protobuf_UninterpretedOption_negative_int_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_double_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE double google_protobuf_UninterpretedOption_double_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_string_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_string_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_aggregate_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_aggregate_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart** google_protobuf_UninterpretedOption_mutable_name(google_protobuf_UninterpretedOption *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption_NamePart**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 80), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart** google_protobuf_UninterpretedOption_resize_name(google_protobuf_UninterpretedOption *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption_NamePart**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption_NamePart* google_protobuf_UninterpretedOption_add_name(google_protobuf_UninterpretedOption *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption_NamePart* sub = (struct google_protobuf_UninterpretedOption_NamePart*)upb_msg_new(&google_protobuf_UninterpretedOption_NamePart_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_identifier_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_positive_int_value(google_protobuf_UninterpretedOption *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_negative_int_value(google_protobuf_UninterpretedOption *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_double_value(google_protobuf_UninterpretedOption *msg, double value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_string_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_aggregate_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+
+/* google.protobuf.UninterpretedOption.NamePart */
+
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_new(upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption_NamePart *)upb_msg_new(&google_protobuf_UninterpretedOption_NamePart_msginit, arena);
+}
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UninterpretedOption_NamePart *ret = google_protobuf_UninterpretedOption_NamePart_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_NamePart_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UninterpretedOption_NamePart_serialize(const google_protobuf_UninterpretedOption_NamePart *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_NamePart_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_has_name_part(const google_protobuf_UninterpretedOption_NamePart *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_NamePart_name_part(const google_protobuf_UninterpretedOption_NamePart *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_has_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void google_protobuf_UninterpretedOption_NamePart_set_name_part(google_protobuf_UninterpretedOption_NamePart *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_NamePart_set_is_extension(google_protobuf_UninterpretedOption_NamePart *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* google.protobuf.SourceCodeInfo */
+
+UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_new(upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo *)upb_msg_new(&google_protobuf_SourceCodeInfo_msginit, arena);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_SourceCodeInfo *ret = google_protobuf_SourceCodeInfo_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_SourceCodeInfo_serialize(const google_protobuf_SourceCodeInfo *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_SourceCodeInfo_Location* const* google_protobuf_SourceCodeInfo_location(const google_protobuf_SourceCodeInfo *msg, size_t *len) { return (const google_protobuf_SourceCodeInfo_Location* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_SourceCodeInfo_Location** google_protobuf_SourceCodeInfo_mutable_location(google_protobuf_SourceCodeInfo *msg, size_t *len) {
+  return (google_protobuf_SourceCodeInfo_Location**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo_Location** google_protobuf_SourceCodeInfo_resize_location(google_protobuf_SourceCodeInfo *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo_Location**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_SourceCodeInfo_Location* google_protobuf_SourceCodeInfo_add_location(google_protobuf_SourceCodeInfo *msg, upb_arena *arena) {
+  struct google_protobuf_SourceCodeInfo_Location* sub = (struct google_protobuf_SourceCodeInfo_Location*)upb_msg_new(&google_protobuf_SourceCodeInfo_Location_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.SourceCodeInfo.Location */
+
+UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_new(upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo_Location *)upb_msg_new(&google_protobuf_SourceCodeInfo_Location_msginit, arena);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_SourceCodeInfo_Location *ret = google_protobuf_SourceCodeInfo_Location_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_Location_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_SourceCodeInfo_Location_serialize(const google_protobuf_SourceCodeInfo_Location *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_Location_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* google_protobuf_SourceCodeInfo_Location_path(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE int32_t const* google_protobuf_SourceCodeInfo_Location_span(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_has_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_SourceCodeInfo_Location_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_has_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_SourceCodeInfo_Location_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* google_protobuf_SourceCodeInfo_Location_leading_detached_comments(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_mutable_path(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_resize_path(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_path(google_protobuf_SourceCodeInfo_Location *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_mutable_span(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_resize_span(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_span(google_protobuf_SourceCodeInfo_Location *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_SourceCodeInfo_Location_set_leading_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_SourceCodeInfo_Location_set_trailing_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE upb_strview* google_protobuf_SourceCodeInfo_Location_mutable_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* google_protobuf_SourceCodeInfo_Location_resize_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.GeneratedCodeInfo */
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_new(upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_msginit, arena);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_GeneratedCodeInfo *ret = google_protobuf_GeneratedCodeInfo_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_GeneratedCodeInfo_serialize(const google_protobuf_GeneratedCodeInfo *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_GeneratedCodeInfo_Annotation* const* google_protobuf_GeneratedCodeInfo_annotation(const google_protobuf_GeneratedCodeInfo *msg, size_t *len) { return (const google_protobuf_GeneratedCodeInfo_Annotation* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation** google_protobuf_GeneratedCodeInfo_mutable_annotation(google_protobuf_GeneratedCodeInfo *msg, size_t *len) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation** google_protobuf_GeneratedCodeInfo_resize_annotation(google_protobuf_GeneratedCodeInfo *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_GeneratedCodeInfo_Annotation* google_protobuf_GeneratedCodeInfo_add_annotation(google_protobuf_GeneratedCodeInfo *msg, upb_arena *arena) {
+  struct google_protobuf_GeneratedCodeInfo_Annotation* sub = (struct google_protobuf_GeneratedCodeInfo_Annotation*)upb_msg_new(&google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.GeneratedCodeInfo.Annotation */
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_new(upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_GeneratedCodeInfo_Annotation *ret = google_protobuf_GeneratedCodeInfo_Annotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_GeneratedCodeInfo_Annotation_serialize(const google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* google_protobuf_GeneratedCodeInfo_Annotation_path(const google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(20, 32), len); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_GeneratedCodeInfo_Annotation_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_GeneratedCodeInfo_Annotation_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_GeneratedCodeInfo_Annotation_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE int32_t* google_protobuf_GeneratedCodeInfo_Annotation_mutable_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 32), len);
+}
+UPB_INLINE int32_t* google_protobuf_GeneratedCodeInfo_Annotation_resize_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_add_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_source_file(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_begin(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_end(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/duration.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/duration.upb.h
new file mode 100644
index 0000000..685c7e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/duration.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/duration.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Duration;
+typedef struct google_protobuf_Duration google_protobuf_Duration;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* google.protobuf.Duration */
+
+UPB_INLINE google_protobuf_Duration *google_protobuf_Duration_new(upb_arena *arena) {
+  return (google_protobuf_Duration *)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+}
+UPB_INLINE google_protobuf_Duration *google_protobuf_Duration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Duration *ret = google_protobuf_Duration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Duration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Duration_serialize(const google_protobuf_Duration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Duration_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Duration_seconds(const google_protobuf_Duration *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t google_protobuf_Duration_nanos(const google_protobuf_Duration *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_Duration_set_seconds(google_protobuf_Duration *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Duration_set_nanos(google_protobuf_Duration *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/empty.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/empty.upb.h
new file mode 100644
index 0000000..5704f01
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/empty.upb.h	
@@ -0,0 +1,74 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/empty.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Empty;
+typedef struct google_protobuf_Empty google_protobuf_Empty;
+extern const upb_msglayout google_protobuf_Empty_msginit;
+
+
+/* google.protobuf.Empty */
+
+UPB_INLINE google_protobuf_Empty *google_protobuf_Empty_new(upb_arena *arena) {
+  return (google_protobuf_Empty *)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+}
+UPB_INLINE google_protobuf_Empty *google_protobuf_Empty_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Empty *ret = google_protobuf_Empty_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Empty_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Empty_serialize(const google_protobuf_Empty *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Empty_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/struct.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/struct.upb.h
new file mode 100644
index 0000000..d0eabd9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/struct.upb.h	
@@ -0,0 +1,239 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/struct.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Struct;
+struct google_protobuf_Struct_FieldsEntry;
+struct google_protobuf_Value;
+struct google_protobuf_ListValue;
+typedef struct google_protobuf_Struct google_protobuf_Struct;
+typedef struct google_protobuf_Struct_FieldsEntry google_protobuf_Struct_FieldsEntry;
+typedef struct google_protobuf_Value google_protobuf_Value;
+typedef struct google_protobuf_ListValue google_protobuf_ListValue;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_Struct_FieldsEntry_msginit;
+extern const upb_msglayout google_protobuf_Value_msginit;
+extern const upb_msglayout google_protobuf_ListValue_msginit;
+
+typedef enum {
+  google_protobuf_NULL_VALUE = 0
+} google_protobuf_NullValue;
+
+
+/* google.protobuf.Struct */
+
+UPB_INLINE google_protobuf_Struct *google_protobuf_Struct_new(upb_arena *arena) {
+  return (google_protobuf_Struct *)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+}
+UPB_INLINE google_protobuf_Struct *google_protobuf_Struct_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Struct *ret = google_protobuf_Struct_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Struct_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Struct_serialize(const google_protobuf_Struct *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Struct_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_Struct_FieldsEntry* const* google_protobuf_Struct_fields(const google_protobuf_Struct *msg, size_t *len) { return (const google_protobuf_Struct_FieldsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_Struct_FieldsEntry** google_protobuf_Struct_mutable_fields(google_protobuf_Struct *msg, size_t *len) {
+  return (google_protobuf_Struct_FieldsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_Struct_FieldsEntry** google_protobuf_Struct_resize_fields(google_protobuf_Struct *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_Struct_FieldsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Struct_FieldsEntry* google_protobuf_Struct_add_fields(google_protobuf_Struct *msg, upb_arena *arena) {
+  struct google_protobuf_Struct_FieldsEntry* sub = (struct google_protobuf_Struct_FieldsEntry*)upb_msg_new(&google_protobuf_Struct_FieldsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.Struct.FieldsEntry */
+
+UPB_INLINE google_protobuf_Struct_FieldsEntry *google_protobuf_Struct_FieldsEntry_new(upb_arena *arena) {
+  return (google_protobuf_Struct_FieldsEntry *)upb_msg_new(&google_protobuf_Struct_FieldsEntry_msginit, arena);
+}
+UPB_INLINE google_protobuf_Struct_FieldsEntry *google_protobuf_Struct_FieldsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Struct_FieldsEntry *ret = google_protobuf_Struct_FieldsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Struct_FieldsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Struct_FieldsEntry_serialize(const google_protobuf_Struct_FieldsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Struct_FieldsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_Struct_FieldsEntry_key(const google_protobuf_Struct_FieldsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const google_protobuf_Value* google_protobuf_Struct_FieldsEntry_value(const google_protobuf_Struct_FieldsEntry *msg) { return UPB_FIELD_AT(msg, const google_protobuf_Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_protobuf_Struct_FieldsEntry_set_key(google_protobuf_Struct_FieldsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Struct_FieldsEntry_set_value(google_protobuf_Struct_FieldsEntry *msg, google_protobuf_Value* value) {
+  UPB_FIELD_AT(msg, google_protobuf_Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Value* google_protobuf_Struct_FieldsEntry_mutable_value(google_protobuf_Struct_FieldsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Value* sub = (struct google_protobuf_Value*)google_protobuf_Struct_FieldsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Value*)upb_msg_new(&google_protobuf_Value_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Struct_FieldsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.Value */
+
+UPB_INLINE google_protobuf_Value *google_protobuf_Value_new(upb_arena *arena) {
+  return (google_protobuf_Value *)upb_msg_new(&google_protobuf_Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Value *google_protobuf_Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Value *ret = google_protobuf_Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Value_serialize(const google_protobuf_Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Value_msginit, arena, len);
+}
+
+typedef enum {
+  google_protobuf_Value_kind_null_value = 1,
+  google_protobuf_Value_kind_number_value = 2,
+  google_protobuf_Value_kind_string_value = 3,
+  google_protobuf_Value_kind_bool_value = 4,
+  google_protobuf_Value_kind_struct_value = 5,
+  google_protobuf_Value_kind_list_value = 6,
+  google_protobuf_Value_kind_NOT_SET = 0
+} google_protobuf_Value_kind_oneofcases;
+UPB_INLINE google_protobuf_Value_kind_oneofcases google_protobuf_Value_kind_case(const google_protobuf_Value* msg) { return (google_protobuf_Value_kind_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool google_protobuf_Value_has_null_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE int32_t google_protobuf_Value_null_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, google_protobuf_NULL_VALUE); }
+UPB_INLINE bool google_protobuf_Value_has_number_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE double google_protobuf_Value_number_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, double, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, 0); }
+UPB_INLINE bool google_protobuf_Value_has_string_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview google_protobuf_Value_string_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_protobuf_Value_has_bool_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 4); }
+UPB_INLINE bool google_protobuf_Value_bool_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 4, false); }
+UPB_INLINE bool google_protobuf_Value_has_struct_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const google_protobuf_Struct* google_protobuf_Value_struct_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, const google_protobuf_Struct*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 5, NULL); }
+UPB_INLINE bool google_protobuf_Value_has_list_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 6); }
+UPB_INLINE const google_protobuf_ListValue* google_protobuf_Value_list_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, const google_protobuf_ListValue*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 6, NULL); }
+
+UPB_INLINE void google_protobuf_Value_set_null_value(google_protobuf_Value *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void google_protobuf_Value_set_number_value(google_protobuf_Value *msg, double value) {
+  UPB_WRITE_ONEOF(msg, double, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE void google_protobuf_Value_set_string_value(google_protobuf_Value *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE void google_protobuf_Value_set_bool_value(google_protobuf_Value *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 4);
+}
+UPB_INLINE void google_protobuf_Value_set_struct_value(google_protobuf_Value *msg, google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, google_protobuf_Struct*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct google_protobuf_Struct* google_protobuf_Value_mutable_struct_value(google_protobuf_Value *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)google_protobuf_Value_struct_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Value_set_struct_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_Value_set_list_value(google_protobuf_Value *msg, google_protobuf_ListValue* value) {
+  UPB_WRITE_ONEOF(msg, google_protobuf_ListValue*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 6);
+}
+UPB_INLINE struct google_protobuf_ListValue* google_protobuf_Value_mutable_list_value(google_protobuf_Value *msg, upb_arena *arena) {
+  struct google_protobuf_ListValue* sub = (struct google_protobuf_ListValue*)google_protobuf_Value_list_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ListValue*)upb_msg_new(&google_protobuf_ListValue_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Value_set_list_value(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.ListValue */
+
+UPB_INLINE google_protobuf_ListValue *google_protobuf_ListValue_new(upb_arena *arena) {
+  return (google_protobuf_ListValue *)upb_msg_new(&google_protobuf_ListValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_ListValue *google_protobuf_ListValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ListValue *ret = google_protobuf_ListValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ListValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ListValue_serialize(const google_protobuf_ListValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ListValue_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_Value* const* google_protobuf_ListValue_values(const google_protobuf_ListValue *msg, size_t *len) { return (const google_protobuf_Value* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_Value** google_protobuf_ListValue_mutable_values(google_protobuf_ListValue *msg, size_t *len) {
+  return (google_protobuf_Value**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_Value** google_protobuf_ListValue_resize_values(google_protobuf_ListValue *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_Value**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Value* google_protobuf_ListValue_add_values(google_protobuf_ListValue *msg, upb_arena *arena) {
+  struct google_protobuf_Value* sub = (struct google_protobuf_Value*)upb_msg_new(&google_protobuf_Value_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h
new file mode 100644
index 0000000..1eb7de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/timestamp.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Timestamp;
+typedef struct google_protobuf_Timestamp google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+
+/* google.protobuf.Timestamp */
+
+UPB_INLINE google_protobuf_Timestamp *google_protobuf_Timestamp_new(upb_arena *arena) {
+  return (google_protobuf_Timestamp *)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+}
+UPB_INLINE google_protobuf_Timestamp *google_protobuf_Timestamp_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Timestamp *ret = google_protobuf_Timestamp_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Timestamp_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Timestamp_serialize(const google_protobuf_Timestamp *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Timestamp_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Timestamp_seconds(const google_protobuf_Timestamp *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t google_protobuf_Timestamp_nanos(const google_protobuf_Timestamp *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_Timestamp_set_seconds(google_protobuf_Timestamp *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Timestamp_set_nanos(google_protobuf_Timestamp *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h
new file mode 100644
index 0000000..4f2a405
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h	
@@ -0,0 +1,262 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/wrappers.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_DoubleValue;
+struct google_protobuf_FloatValue;
+struct google_protobuf_Int64Value;
+struct google_protobuf_UInt64Value;
+struct google_protobuf_Int32Value;
+struct google_protobuf_UInt32Value;
+struct google_protobuf_BoolValue;
+struct google_protobuf_StringValue;
+struct google_protobuf_BytesValue;
+typedef struct google_protobuf_DoubleValue google_protobuf_DoubleValue;
+typedef struct google_protobuf_FloatValue google_protobuf_FloatValue;
+typedef struct google_protobuf_Int64Value google_protobuf_Int64Value;
+typedef struct google_protobuf_UInt64Value google_protobuf_UInt64Value;
+typedef struct google_protobuf_Int32Value google_protobuf_Int32Value;
+typedef struct google_protobuf_UInt32Value google_protobuf_UInt32Value;
+typedef struct google_protobuf_BoolValue google_protobuf_BoolValue;
+typedef struct google_protobuf_StringValue google_protobuf_StringValue;
+typedef struct google_protobuf_BytesValue google_protobuf_BytesValue;
+extern const upb_msglayout google_protobuf_DoubleValue_msginit;
+extern const upb_msglayout google_protobuf_FloatValue_msginit;
+extern const upb_msglayout google_protobuf_Int64Value_msginit;
+extern const upb_msglayout google_protobuf_UInt64Value_msginit;
+extern const upb_msglayout google_protobuf_Int32Value_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_StringValue_msginit;
+extern const upb_msglayout google_protobuf_BytesValue_msginit;
+
+
+/* google.protobuf.DoubleValue */
+
+UPB_INLINE google_protobuf_DoubleValue *google_protobuf_DoubleValue_new(upb_arena *arena) {
+  return (google_protobuf_DoubleValue *)upb_msg_new(&google_protobuf_DoubleValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_DoubleValue *google_protobuf_DoubleValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DoubleValue *ret = google_protobuf_DoubleValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DoubleValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DoubleValue_serialize(const google_protobuf_DoubleValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DoubleValue_msginit, arena, len);
+}
+
+UPB_INLINE double google_protobuf_DoubleValue_value(const google_protobuf_DoubleValue *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_DoubleValue_set_value(google_protobuf_DoubleValue *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.FloatValue */
+
+UPB_INLINE google_protobuf_FloatValue *google_protobuf_FloatValue_new(upb_arena *arena) {
+  return (google_protobuf_FloatValue *)upb_msg_new(&google_protobuf_FloatValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_FloatValue *google_protobuf_FloatValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FloatValue *ret = google_protobuf_FloatValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FloatValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FloatValue_serialize(const google_protobuf_FloatValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FloatValue_msginit, arena, len);
+}
+
+UPB_INLINE float google_protobuf_FloatValue_value(const google_protobuf_FloatValue *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_FloatValue_set_value(google_protobuf_FloatValue *msg, float value) {
+  UPB_FIELD_AT(msg, float, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.Int64Value */
+
+UPB_INLINE google_protobuf_Int64Value *google_protobuf_Int64Value_new(upb_arena *arena) {
+  return (google_protobuf_Int64Value *)upb_msg_new(&google_protobuf_Int64Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Int64Value *google_protobuf_Int64Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Int64Value *ret = google_protobuf_Int64Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Int64Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Int64Value_serialize(const google_protobuf_Int64Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Int64Value_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Int64Value_value(const google_protobuf_Int64Value *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_Int64Value_set_value(google_protobuf_Int64Value *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.UInt64Value */
+
+UPB_INLINE google_protobuf_UInt64Value *google_protobuf_UInt64Value_new(upb_arena *arena) {
+  return (google_protobuf_UInt64Value *)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_UInt64Value *google_protobuf_UInt64Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UInt64Value *ret = google_protobuf_UInt64Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UInt64Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UInt64Value_serialize(const google_protobuf_UInt64Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UInt64Value_msginit, arena, len);
+}
+
+UPB_INLINE uint64_t google_protobuf_UInt64Value_value(const google_protobuf_UInt64Value *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_UInt64Value_set_value(google_protobuf_UInt64Value *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.Int32Value */
+
+UPB_INLINE google_protobuf_Int32Value *google_protobuf_Int32Value_new(upb_arena *arena) {
+  return (google_protobuf_Int32Value *)upb_msg_new(&google_protobuf_Int32Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Int32Value *google_protobuf_Int32Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Int32Value *ret = google_protobuf_Int32Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Int32Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Int32Value_serialize(const google_protobuf_Int32Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Int32Value_msginit, arena, len);
+}
+
+UPB_INLINE int32_t google_protobuf_Int32Value_value(const google_protobuf_Int32Value *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_Int32Value_set_value(google_protobuf_Int32Value *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.UInt32Value */
+
+UPB_INLINE google_protobuf_UInt32Value *google_protobuf_UInt32Value_new(upb_arena *arena) {
+  return (google_protobuf_UInt32Value *)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_UInt32Value *google_protobuf_UInt32Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UInt32Value *ret = google_protobuf_UInt32Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UInt32Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UInt32Value_serialize(const google_protobuf_UInt32Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UInt32Value_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t google_protobuf_UInt32Value_value(const google_protobuf_UInt32Value *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_UInt32Value_set_value(google_protobuf_UInt32Value *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.BoolValue */
+
+UPB_INLINE google_protobuf_BoolValue *google_protobuf_BoolValue_new(upb_arena *arena) {
+  return (google_protobuf_BoolValue *)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_BoolValue *google_protobuf_BoolValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_BoolValue *ret = google_protobuf_BoolValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_BoolValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_BoolValue_serialize(const google_protobuf_BoolValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_BoolValue_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_BoolValue_value(const google_protobuf_BoolValue *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_BoolValue_set_value(google_protobuf_BoolValue *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.StringValue */
+
+UPB_INLINE google_protobuf_StringValue *google_protobuf_StringValue_new(upb_arena *arena) {
+  return (google_protobuf_StringValue *)upb_msg_new(&google_protobuf_StringValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_StringValue *google_protobuf_StringValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_StringValue *ret = google_protobuf_StringValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_StringValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_StringValue_serialize(const google_protobuf_StringValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_StringValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_StringValue_value(const google_protobuf_StringValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_StringValue_set_value(google_protobuf_StringValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.BytesValue */
+
+UPB_INLINE google_protobuf_BytesValue *google_protobuf_BytesValue_new(upb_arena *arena) {
+  return (google_protobuf_BytesValue *)upb_msg_new(&google_protobuf_BytesValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_BytesValue *google_protobuf_BytesValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_BytesValue *ret = google_protobuf_BytesValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_BytesValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_BytesValue_serialize(const google_protobuf_BytesValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_BytesValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_BytesValue_value(const google_protobuf_BytesValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_BytesValue_set_value(google_protobuf_BytesValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/rpc/status.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/rpc/status.upb.h
new file mode 100644
index 0000000..7cccb8c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/google/rpc/status.upb.h	
@@ -0,0 +1,98 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/rpc/status.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_RPC_STATUS_PROTO_UPB_H_
+#define GOOGLE_RPC_STATUS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_rpc_Status;
+typedef struct google_rpc_Status google_rpc_Status;
+extern const upb_msglayout google_rpc_Status_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* google.rpc.Status */
+
+UPB_INLINE google_rpc_Status *google_rpc_Status_new(upb_arena *arena) {
+  return (google_rpc_Status *)upb_msg_new(&google_rpc_Status_msginit, arena);
+}
+UPB_INLINE google_rpc_Status *google_rpc_Status_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_rpc_Status *ret = google_rpc_Status_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_rpc_Status_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_rpc_Status_serialize(const google_rpc_Status *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_rpc_Status_msginit, arena, len);
+}
+
+UPB_INLINE int32_t google_rpc_Status_code(const google_rpc_Status *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_rpc_Status_message(const google_rpc_Status *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Any* const* google_rpc_Status_details(const google_rpc_Status *msg, size_t *len) { return (const struct google_protobuf_Any* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void google_rpc_Status_set_code(google_rpc_Status *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_rpc_Status_set_message(google_rpc_Status *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Any** google_rpc_Status_mutable_details(google_rpc_Status *msg, size_t *len) {
+  return (struct google_protobuf_Any**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct google_protobuf_Any** google_rpc_Status_resize_details(google_rpc_Status *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Any**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Any* google_rpc_Status_add_details(google_rpc_Status *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_RPC_STATUS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h
new file mode 100644
index 0000000..8defc69
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h	
@@ -0,0 +1,150 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/altscontext.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_AltsContext;
+struct grpc_gcp_AltsContext_PeerAttributesEntry;
+typedef struct grpc_gcp_AltsContext grpc_gcp_AltsContext;
+typedef struct grpc_gcp_AltsContext_PeerAttributesEntry grpc_gcp_AltsContext_PeerAttributesEntry;
+extern const upb_msglayout grpc_gcp_AltsContext_msginit;
+extern const upb_msglayout grpc_gcp_AltsContext_PeerAttributesEntry_msginit;
+struct grpc_gcp_RpcProtocolVersions;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+
+
+/* grpc.gcp.AltsContext */
+
+UPB_INLINE grpc_gcp_AltsContext *grpc_gcp_AltsContext_new(upb_arena *arena) {
+  return (grpc_gcp_AltsContext *)upb_msg_new(&grpc_gcp_AltsContext_msginit, arena);
+}
+UPB_INLINE grpc_gcp_AltsContext *grpc_gcp_AltsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_AltsContext *ret = grpc_gcp_AltsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_AltsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_AltsContext_serialize(const grpc_gcp_AltsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_AltsContext_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_AltsContext_application_protocol(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_record_protocol(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE int32_t grpc_gcp_AltsContext_security_level(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_peer_service_account(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_local_service_account(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 56)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_AltsContext_peer_rpc_versions(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)); }
+UPB_INLINE const grpc_gcp_AltsContext_PeerAttributesEntry* const* grpc_gcp_AltsContext_peer_attributes(const grpc_gcp_AltsContext *msg, size_t *len) { return (const grpc_gcp_AltsContext_PeerAttributesEntry* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+
+UPB_INLINE void grpc_gcp_AltsContext_set_application_protocol(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_record_protocol(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_security_level(grpc_gcp_AltsContext *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_peer_service_account(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_local_service_account(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_peer_rpc_versions(grpc_gcp_AltsContext *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_AltsContext_mutable_peer_rpc_versions(grpc_gcp_AltsContext *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_AltsContext_peer_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_AltsContext_set_peer_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry** grpc_gcp_AltsContext_mutable_peer_attributes(grpc_gcp_AltsContext *msg, size_t *len) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry** grpc_gcp_AltsContext_resize_peer_attributes(grpc_gcp_AltsContext *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_AltsContext_PeerAttributesEntry* grpc_gcp_AltsContext_add_peer_attributes(grpc_gcp_AltsContext *msg, upb_arena *arena) {
+  struct grpc_gcp_AltsContext_PeerAttributesEntry* sub = (struct grpc_gcp_AltsContext_PeerAttributesEntry*)upb_msg_new(&grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.AltsContext.PeerAttributesEntry */
+
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry *grpc_gcp_AltsContext_PeerAttributesEntry_new(upb_arena *arena) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry *)upb_msg_new(&grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry *grpc_gcp_AltsContext_PeerAttributesEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_AltsContext_PeerAttributesEntry *ret = grpc_gcp_AltsContext_PeerAttributesEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_AltsContext_PeerAttributesEntry_serialize(const grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_AltsContext_PeerAttributesEntry_key(const grpc_gcp_AltsContext_PeerAttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_PeerAttributesEntry_value(const grpc_gcp_AltsContext_PeerAttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_gcp_AltsContext_PeerAttributesEntry_set_key(grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_PeerAttributesEntry_set_value(grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h
new file mode 100644
index 0000000..14dfb95
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h	
@@ -0,0 +1,717 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/handshaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_Endpoint;
+struct grpc_gcp_Identity;
+struct grpc_gcp_Identity_AttributesEntry;
+struct grpc_gcp_StartClientHandshakeReq;
+struct grpc_gcp_ServerHandshakeParameters;
+struct grpc_gcp_StartServerHandshakeReq;
+struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry;
+struct grpc_gcp_NextHandshakeMessageReq;
+struct grpc_gcp_HandshakerReq;
+struct grpc_gcp_HandshakerResult;
+struct grpc_gcp_HandshakerStatus;
+struct grpc_gcp_HandshakerResp;
+typedef struct grpc_gcp_Endpoint grpc_gcp_Endpoint;
+typedef struct grpc_gcp_Identity grpc_gcp_Identity;
+typedef struct grpc_gcp_Identity_AttributesEntry grpc_gcp_Identity_AttributesEntry;
+typedef struct grpc_gcp_StartClientHandshakeReq grpc_gcp_StartClientHandshakeReq;
+typedef struct grpc_gcp_ServerHandshakeParameters grpc_gcp_ServerHandshakeParameters;
+typedef struct grpc_gcp_StartServerHandshakeReq grpc_gcp_StartServerHandshakeReq;
+typedef struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry;
+typedef struct grpc_gcp_NextHandshakeMessageReq grpc_gcp_NextHandshakeMessageReq;
+typedef struct grpc_gcp_HandshakerReq grpc_gcp_HandshakerReq;
+typedef struct grpc_gcp_HandshakerResult grpc_gcp_HandshakerResult;
+typedef struct grpc_gcp_HandshakerStatus grpc_gcp_HandshakerStatus;
+typedef struct grpc_gcp_HandshakerResp grpc_gcp_HandshakerResp;
+extern const upb_msglayout grpc_gcp_Endpoint_msginit;
+extern const upb_msglayout grpc_gcp_Identity_msginit;
+extern const upb_msglayout grpc_gcp_Identity_AttributesEntry_msginit;
+extern const upb_msglayout grpc_gcp_StartClientHandshakeReq_msginit;
+extern const upb_msglayout grpc_gcp_ServerHandshakeParameters_msginit;
+extern const upb_msglayout grpc_gcp_StartServerHandshakeReq_msginit;
+extern const upb_msglayout grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit;
+extern const upb_msglayout grpc_gcp_NextHandshakeMessageReq_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerReq_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerResult_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerStatus_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerResp_msginit;
+struct grpc_gcp_RpcProtocolVersions;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+
+typedef enum {
+  grpc_gcp_HANDSHAKE_PROTOCOL_UNSPECIFIED = 0,
+  grpc_gcp_TLS = 1,
+  grpc_gcp_ALTS = 2
+} grpc_gcp_HandshakeProtocol;
+
+typedef enum {
+  grpc_gcp_NETWORK_PROTOCOL_UNSPECIFIED = 0,
+  grpc_gcp_TCP = 1,
+  grpc_gcp_UDP = 2
+} grpc_gcp_NetworkProtocol;
+
+
+/* grpc.gcp.Endpoint */
+
+UPB_INLINE grpc_gcp_Endpoint *grpc_gcp_Endpoint_new(upb_arena *arena) {
+  return (grpc_gcp_Endpoint *)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Endpoint *grpc_gcp_Endpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Endpoint *ret = grpc_gcp_Endpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Endpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Endpoint_serialize(const grpc_gcp_Endpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Endpoint_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_Endpoint_ip_address(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE int32_t grpc_gcp_Endpoint_port(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t grpc_gcp_Endpoint_protocol(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_Endpoint_set_ip_address(grpc_gcp_Endpoint *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void grpc_gcp_Endpoint_set_port(grpc_gcp_Endpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_Endpoint_set_protocol(grpc_gcp_Endpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.Identity */
+
+UPB_INLINE grpc_gcp_Identity *grpc_gcp_Identity_new(upb_arena *arena) {
+  return (grpc_gcp_Identity *)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Identity *grpc_gcp_Identity_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Identity *ret = grpc_gcp_Identity_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Identity_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Identity_serialize(const grpc_gcp_Identity *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Identity_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_gcp_Identity_identity_oneof_service_account = 1,
+  grpc_gcp_Identity_identity_oneof_hostname = 2,
+  grpc_gcp_Identity_identity_oneof_NOT_SET = 0
+} grpc_gcp_Identity_identity_oneof_oneofcases;
+UPB_INLINE grpc_gcp_Identity_identity_oneof_oneofcases grpc_gcp_Identity_identity_oneof_case(const grpc_gcp_Identity* msg) { return (grpc_gcp_Identity_identity_oneof_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool grpc_gcp_Identity_has_service_account(const grpc_gcp_Identity *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE upb_strview grpc_gcp_Identity_service_account(const grpc_gcp_Identity *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool grpc_gcp_Identity_has_hostname(const grpc_gcp_Identity *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE upb_strview grpc_gcp_Identity_hostname(const grpc_gcp_Identity *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE const grpc_gcp_Identity_AttributesEntry* const* grpc_gcp_Identity_attributes(const grpc_gcp_Identity *msg, size_t *len) { return (const grpc_gcp_Identity_AttributesEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE void grpc_gcp_Identity_set_service_account(grpc_gcp_Identity *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE void grpc_gcp_Identity_set_hostname(grpc_gcp_Identity *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry** grpc_gcp_Identity_mutable_attributes(grpc_gcp_Identity *msg, size_t *len) {
+  return (grpc_gcp_Identity_AttributesEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry** grpc_gcp_Identity_resize_attributes(grpc_gcp_Identity *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity_AttributesEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity_AttributesEntry* grpc_gcp_Identity_add_attributes(grpc_gcp_Identity *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity_AttributesEntry* sub = (struct grpc_gcp_Identity_AttributesEntry*)upb_msg_new(&grpc_gcp_Identity_AttributesEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.Identity.AttributesEntry */
+
+UPB_INLINE grpc_gcp_Identity_AttributesEntry *grpc_gcp_Identity_AttributesEntry_new(upb_arena *arena) {
+  return (grpc_gcp_Identity_AttributesEntry *)upb_msg_new(&grpc_gcp_Identity_AttributesEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry *grpc_gcp_Identity_AttributesEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Identity_AttributesEntry *ret = grpc_gcp_Identity_AttributesEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Identity_AttributesEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Identity_AttributesEntry_serialize(const grpc_gcp_Identity_AttributesEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Identity_AttributesEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_Identity_AttributesEntry_key(const grpc_gcp_Identity_AttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_Identity_AttributesEntry_value(const grpc_gcp_Identity_AttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_gcp_Identity_AttributesEntry_set_key(grpc_gcp_Identity_AttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_Identity_AttributesEntry_set_value(grpc_gcp_Identity_AttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* grpc.gcp.StartClientHandshakeReq */
+
+UPB_INLINE grpc_gcp_StartClientHandshakeReq *grpc_gcp_StartClientHandshakeReq_new(upb_arena *arena) {
+  return (grpc_gcp_StartClientHandshakeReq *)upb_msg_new(&grpc_gcp_StartClientHandshakeReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartClientHandshakeReq *grpc_gcp_StartClientHandshakeReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartClientHandshakeReq *ret = grpc_gcp_StartClientHandshakeReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartClientHandshakeReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartClientHandshakeReq_serialize(const grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartClientHandshakeReq_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_gcp_StartClientHandshakeReq_handshake_security_protocol(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* grpc_gcp_StartClientHandshakeReq_application_protocols(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE upb_strview const* grpc_gcp_StartClientHandshakeReq_record_protocols(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const grpc_gcp_Identity* const* grpc_gcp_StartClientHandshakeReq_target_identities(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (const grpc_gcp_Identity* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_local_identity(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(20, 32)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_local_endpoint(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(24, 40)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_remote_endpoint(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(28, 48)); }
+UPB_INLINE upb_strview grpc_gcp_StartClientHandshakeReq_target_name(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartClientHandshakeReq_rpc_versions(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(32, 56)); }
+UPB_INLINE uint32_t grpc_gcp_StartClientHandshakeReq_max_frame_size(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_handshake_security_protocol(grpc_gcp_StartClientHandshakeReq *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_mutable_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_resize_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartClientHandshakeReq_add_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_mutable_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_resize_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartClientHandshakeReq_add_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_StartClientHandshakeReq_mutable_target_identities(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (grpc_gcp_Identity**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_StartClientHandshakeReq_resize_target_identities(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_add_target_identities(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_local_identity(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_mutable_local_identity(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_StartClientHandshakeReq_local_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_local_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_local_endpoint(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_mutable_local_endpoint(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartClientHandshakeReq_local_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_local_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_remote_endpoint(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_mutable_remote_endpoint(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartClientHandshakeReq_remote_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_remote_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_target_name(grpc_gcp_StartClientHandshakeReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_rpc_versions(grpc_gcp_StartClientHandshakeReq *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartClientHandshakeReq_mutable_rpc_versions(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_StartClientHandshakeReq_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_max_frame_size(grpc_gcp_StartClientHandshakeReq *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* grpc.gcp.ServerHandshakeParameters */
+
+UPB_INLINE grpc_gcp_ServerHandshakeParameters *grpc_gcp_ServerHandshakeParameters_new(upb_arena *arena) {
+  return (grpc_gcp_ServerHandshakeParameters *)upb_msg_new(&grpc_gcp_ServerHandshakeParameters_msginit, arena);
+}
+UPB_INLINE grpc_gcp_ServerHandshakeParameters *grpc_gcp_ServerHandshakeParameters_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_ServerHandshakeParameters *ret = grpc_gcp_ServerHandshakeParameters_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_ServerHandshakeParameters_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_ServerHandshakeParameters_serialize(const grpc_gcp_ServerHandshakeParameters *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_ServerHandshakeParameters_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* grpc_gcp_ServerHandshakeParameters_record_protocols(const grpc_gcp_ServerHandshakeParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+UPB_INLINE const grpc_gcp_Identity* const* grpc_gcp_ServerHandshakeParameters_local_identities(const grpc_gcp_ServerHandshakeParameters *msg, size_t *len) { return (const grpc_gcp_Identity* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE upb_strview* grpc_gcp_ServerHandshakeParameters_mutable_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_ServerHandshakeParameters_resize_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_ServerHandshakeParameters_add_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_ServerHandshakeParameters_mutable_local_identities(grpc_gcp_ServerHandshakeParameters *msg, size_t *len) {
+  return (grpc_gcp_Identity**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_ServerHandshakeParameters_resize_local_identities(grpc_gcp_ServerHandshakeParameters *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_ServerHandshakeParameters_add_local_identities(grpc_gcp_ServerHandshakeParameters *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.StartServerHandshakeReq */
+
+UPB_INLINE grpc_gcp_StartServerHandshakeReq *grpc_gcp_StartServerHandshakeReq_new(upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq *)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq *grpc_gcp_StartServerHandshakeReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartServerHandshakeReq *ret = grpc_gcp_StartServerHandshakeReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartServerHandshakeReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartServerHandshakeReq_serialize(const grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartServerHandshakeReq_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* grpc_gcp_StartServerHandshakeReq_application_protocols(const grpc_gcp_StartServerHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* const* grpc_gcp_StartServerHandshakeReq_handshake_parameters(const grpc_gcp_StartServerHandshakeReq *msg, size_t *len) { return (const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview grpc_gcp_StartServerHandshakeReq_in_bytes(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_local_endpoint(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(12, 24)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_remote_endpoint(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartServerHandshakeReq_rpc_versions(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(20, 40)); }
+UPB_INLINE uint32_t grpc_gcp_StartServerHandshakeReq_max_frame_size(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE upb_strview* grpc_gcp_StartServerHandshakeReq_mutable_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartServerHandshakeReq_resize_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartServerHandshakeReq_add_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry** grpc_gcp_StartServerHandshakeReq_mutable_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, size_t *len) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry** grpc_gcp_StartServerHandshakeReq_resize_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* grpc_gcp_StartServerHandshakeReq_add_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* sub = (struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry*)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_in_bytes(grpc_gcp_StartServerHandshakeReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_local_endpoint(grpc_gcp_StartServerHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_mutable_local_endpoint(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartServerHandshakeReq_local_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_local_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_remote_endpoint(grpc_gcp_StartServerHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_mutable_remote_endpoint(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartServerHandshakeReq_remote_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_remote_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_rpc_versions(grpc_gcp_StartServerHandshakeReq *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartServerHandshakeReq_mutable_rpc_versions(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_StartServerHandshakeReq_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_max_frame_size(grpc_gcp_StartServerHandshakeReq *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.StartServerHandshakeReq.HandshakeParametersEntry */
+
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_new(upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *ret = grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_serialize(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_key(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_ServerHandshakeParameters* grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_value(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_ServerHandshakeParameters*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_key(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_value(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, grpc_gcp_ServerHandshakeParameters* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_ServerHandshakeParameters*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct grpc_gcp_ServerHandshakeParameters* grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_mutable_value(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, upb_arena *arena) {
+  struct grpc_gcp_ServerHandshakeParameters* sub = (struct grpc_gcp_ServerHandshakeParameters*)grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_ServerHandshakeParameters*)upb_msg_new(&grpc_gcp_ServerHandshakeParameters_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.NextHandshakeMessageReq */
+
+UPB_INLINE grpc_gcp_NextHandshakeMessageReq *grpc_gcp_NextHandshakeMessageReq_new(upb_arena *arena) {
+  return (grpc_gcp_NextHandshakeMessageReq *)upb_msg_new(&grpc_gcp_NextHandshakeMessageReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_NextHandshakeMessageReq *grpc_gcp_NextHandshakeMessageReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_NextHandshakeMessageReq *ret = grpc_gcp_NextHandshakeMessageReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_NextHandshakeMessageReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_NextHandshakeMessageReq_serialize(const grpc_gcp_NextHandshakeMessageReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_NextHandshakeMessageReq_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_NextHandshakeMessageReq_in_bytes(const grpc_gcp_NextHandshakeMessageReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_NextHandshakeMessageReq_set_in_bytes(grpc_gcp_NextHandshakeMessageReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.HandshakerReq */
+
+UPB_INLINE grpc_gcp_HandshakerReq *grpc_gcp_HandshakerReq_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerReq *)upb_msg_new(&grpc_gcp_HandshakerReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerReq *grpc_gcp_HandshakerReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerReq *ret = grpc_gcp_HandshakerReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerReq_serialize(const grpc_gcp_HandshakerReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerReq_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_gcp_HandshakerReq_req_oneof_client_start = 1,
+  grpc_gcp_HandshakerReq_req_oneof_server_start = 2,
+  grpc_gcp_HandshakerReq_req_oneof_next = 3,
+  grpc_gcp_HandshakerReq_req_oneof_NOT_SET = 0
+} grpc_gcp_HandshakerReq_req_oneof_oneofcases;
+UPB_INLINE grpc_gcp_HandshakerReq_req_oneof_oneofcases grpc_gcp_HandshakerReq_req_oneof_case(const grpc_gcp_HandshakerReq* msg) { return (grpc_gcp_HandshakerReq_req_oneof_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_client_start(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_gcp_StartClientHandshakeReq* grpc_gcp_HandshakerReq_client_start(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_StartClientHandshakeReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_server_start(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_gcp_StartServerHandshakeReq* grpc_gcp_HandshakerReq_server_start(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_StartServerHandshakeReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_next(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const grpc_gcp_NextHandshakeMessageReq* grpc_gcp_HandshakerReq_next(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_NextHandshakeMessageReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void grpc_gcp_HandshakerReq_set_client_start(grpc_gcp_HandshakerReq *msg, grpc_gcp_StartClientHandshakeReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_StartClientHandshakeReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_gcp_StartClientHandshakeReq* grpc_gcp_HandshakerReq_mutable_client_start(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartClientHandshakeReq* sub = (struct grpc_gcp_StartClientHandshakeReq*)grpc_gcp_HandshakerReq_client_start(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_StartClientHandshakeReq*)upb_msg_new(&grpc_gcp_StartClientHandshakeReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_client_start(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerReq_set_server_start(grpc_gcp_HandshakerReq *msg, grpc_gcp_StartServerHandshakeReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_StartServerHandshakeReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_gcp_StartServerHandshakeReq* grpc_gcp_HandshakerReq_mutable_server_start(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartServerHandshakeReq* sub = (struct grpc_gcp_StartServerHandshakeReq*)grpc_gcp_HandshakerReq_server_start(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_StartServerHandshakeReq*)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_server_start(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerReq_set_next(grpc_gcp_HandshakerReq *msg, grpc_gcp_NextHandshakeMessageReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_NextHandshakeMessageReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct grpc_gcp_NextHandshakeMessageReq* grpc_gcp_HandshakerReq_mutable_next(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_NextHandshakeMessageReq* sub = (struct grpc_gcp_NextHandshakeMessageReq*)grpc_gcp_HandshakerReq_next(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_NextHandshakeMessageReq*)upb_msg_new(&grpc_gcp_NextHandshakeMessageReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_next(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.HandshakerResult */
+
+UPB_INLINE grpc_gcp_HandshakerResult *grpc_gcp_HandshakerResult_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerResult *)upb_msg_new(&grpc_gcp_HandshakerResult_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerResult *grpc_gcp_HandshakerResult_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerResult *ret = grpc_gcp_HandshakerResult_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerResult_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerResult_serialize(const grpc_gcp_HandshakerResult *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerResult_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_application_protocol(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_record_protocol(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_key_data(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_HandshakerResult_peer_identity(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(32, 56)); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_HandshakerResult_local_identity(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(36, 64)); }
+UPB_INLINE bool grpc_gcp_HandshakerResult_keep_channel_open(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_HandshakerResult_peer_rpc_versions(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)); }
+UPB_INLINE uint32_t grpc_gcp_HandshakerResult_max_frame_size(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_HandshakerResult_set_application_protocol(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_record_protocol(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_key_data(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_peer_identity(grpc_gcp_HandshakerResult *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_HandshakerResult_mutable_peer_identity(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_HandshakerResult_peer_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_peer_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_local_identity(grpc_gcp_HandshakerResult *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_HandshakerResult_mutable_local_identity(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_HandshakerResult_local_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_local_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_keep_channel_open(grpc_gcp_HandshakerResult *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_peer_rpc_versions(grpc_gcp_HandshakerResult *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_HandshakerResult_mutable_peer_rpc_versions(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_HandshakerResult_peer_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_peer_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_max_frame_size(grpc_gcp_HandshakerResult *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.HandshakerStatus */
+
+UPB_INLINE grpc_gcp_HandshakerStatus *grpc_gcp_HandshakerStatus_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerStatus *)upb_msg_new(&grpc_gcp_HandshakerStatus_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerStatus *grpc_gcp_HandshakerStatus_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerStatus *ret = grpc_gcp_HandshakerStatus_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerStatus_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerStatus_serialize(const grpc_gcp_HandshakerStatus *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerStatus_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t grpc_gcp_HandshakerStatus_code(const grpc_gcp_HandshakerStatus *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerStatus_details(const grpc_gcp_HandshakerStatus *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_HandshakerStatus_set_code(grpc_gcp_HandshakerStatus *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerStatus_set_details(grpc_gcp_HandshakerStatus *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+
+/* grpc.gcp.HandshakerResp */
+
+UPB_INLINE grpc_gcp_HandshakerResp *grpc_gcp_HandshakerResp_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerResp *)upb_msg_new(&grpc_gcp_HandshakerResp_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerResp *grpc_gcp_HandshakerResp_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerResp *ret = grpc_gcp_HandshakerResp_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerResp_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerResp_serialize(const grpc_gcp_HandshakerResp *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerResp_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_HandshakerResp_out_frames(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE uint32_t grpc_gcp_HandshakerResp_bytes_consumed(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_HandshakerResult* grpc_gcp_HandshakerResp_result(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_HandshakerResult*, UPB_SIZE(12, 24)); }
+UPB_INLINE const grpc_gcp_HandshakerStatus* grpc_gcp_HandshakerResp_status(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_HandshakerStatus*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void grpc_gcp_HandshakerResp_set_out_frames(grpc_gcp_HandshakerResp *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_bytes_consumed(grpc_gcp_HandshakerResp *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_result(grpc_gcp_HandshakerResp *msg, grpc_gcp_HandshakerResult* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_HandshakerResult*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct grpc_gcp_HandshakerResult* grpc_gcp_HandshakerResp_mutable_result(grpc_gcp_HandshakerResp *msg, upb_arena *arena) {
+  struct grpc_gcp_HandshakerResult* sub = (struct grpc_gcp_HandshakerResult*)grpc_gcp_HandshakerResp_result(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_HandshakerResult*)upb_msg_new(&grpc_gcp_HandshakerResult_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResp_set_result(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_status(grpc_gcp_HandshakerResp *msg, grpc_gcp_HandshakerStatus* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_HandshakerStatus*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_HandshakerStatus* grpc_gcp_HandshakerResp_mutable_status(grpc_gcp_HandshakerResp *msg, upb_arena *arena) {
+  struct grpc_gcp_HandshakerStatus* sub = (struct grpc_gcp_HandshakerStatus*)grpc_gcp_HandshakerResp_status(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_HandshakerStatus*)upb_msg_new(&grpc_gcp_HandshakerStatus_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResp_set_status(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h
new file mode 100644
index 0000000..06c4392
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h	
@@ -0,0 +1,133 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/transport_security_common.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_RpcProtocolVersions;
+struct grpc_gcp_RpcProtocolVersions_Version;
+typedef struct grpc_gcp_RpcProtocolVersions grpc_gcp_RpcProtocolVersions;
+typedef struct grpc_gcp_RpcProtocolVersions_Version grpc_gcp_RpcProtocolVersions_Version;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_Version_msginit;
+
+typedef enum {
+  grpc_gcp_SECURITY_NONE = 0,
+  grpc_gcp_INTEGRITY_ONLY = 1,
+  grpc_gcp_INTEGRITY_AND_PRIVACY = 2
+} grpc_gcp_SecurityLevel;
+
+
+/* grpc.gcp.RpcProtocolVersions */
+
+UPB_INLINE grpc_gcp_RpcProtocolVersions *grpc_gcp_RpcProtocolVersions_new(upb_arena *arena) {
+  return (grpc_gcp_RpcProtocolVersions *)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+}
+UPB_INLINE grpc_gcp_RpcProtocolVersions *grpc_gcp_RpcProtocolVersions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_RpcProtocolVersions *ret = grpc_gcp_RpcProtocolVersions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_RpcProtocolVersions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_RpcProtocolVersions_serialize(const grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_RpcProtocolVersions_msginit, arena, len);
+}
+
+UPB_INLINE const grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_max_rpc_version(const grpc_gcp_RpcProtocolVersions *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_min_rpc_version(const grpc_gcp_RpcProtocolVersions *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_set_max_rpc_version(grpc_gcp_RpcProtocolVersions *msg, grpc_gcp_RpcProtocolVersions_Version* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_mutable_max_rpc_version(grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions_Version* sub = (struct grpc_gcp_RpcProtocolVersions_Version*)grpc_gcp_RpcProtocolVersions_max_rpc_version(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions_Version*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_RpcProtocolVersions_set_max_rpc_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_set_min_rpc_version(grpc_gcp_RpcProtocolVersions *msg, grpc_gcp_RpcProtocolVersions_Version* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_mutable_min_rpc_version(grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions_Version* sub = (struct grpc_gcp_RpcProtocolVersions_Version*)grpc_gcp_RpcProtocolVersions_min_rpc_version(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions_Version*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_RpcProtocolVersions_set_min_rpc_version(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.RpcProtocolVersions.Version */
+
+UPB_INLINE grpc_gcp_RpcProtocolVersions_Version *grpc_gcp_RpcProtocolVersions_Version_new(upb_arena *arena) {
+  return (grpc_gcp_RpcProtocolVersions_Version *)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+}
+UPB_INLINE grpc_gcp_RpcProtocolVersions_Version *grpc_gcp_RpcProtocolVersions_Version_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_RpcProtocolVersions_Version *ret = grpc_gcp_RpcProtocolVersions_Version_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_RpcProtocolVersions_Version_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_RpcProtocolVersions_Version_serialize(const grpc_gcp_RpcProtocolVersions_Version *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_RpcProtocolVersions_Version_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t grpc_gcp_RpcProtocolVersions_Version_major(const grpc_gcp_RpcProtocolVersions_Version *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t grpc_gcp_RpcProtocolVersions_Version_minor(const grpc_gcp_RpcProtocolVersions_Version *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_Version_set_major(grpc_gcp_RpcProtocolVersions_Version *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_Version_set_minor(grpc_gcp_RpcProtocolVersions_Version *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h
new file mode 100644
index 0000000..df884ff
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h	
@@ -0,0 +1,108 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/health/v1/health.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_health_v1_HealthCheckRequest;
+struct grpc_health_v1_HealthCheckResponse;
+typedef struct grpc_health_v1_HealthCheckRequest grpc_health_v1_HealthCheckRequest;
+typedef struct grpc_health_v1_HealthCheckResponse grpc_health_v1_HealthCheckResponse;
+extern const upb_msglayout grpc_health_v1_HealthCheckRequest_msginit;
+extern const upb_msglayout grpc_health_v1_HealthCheckResponse_msginit;
+
+typedef enum {
+  grpc_health_v1_HealthCheckResponse_UNKNOWN = 0,
+  grpc_health_v1_HealthCheckResponse_SERVING = 1,
+  grpc_health_v1_HealthCheckResponse_NOT_SERVING = 2,
+  grpc_health_v1_HealthCheckResponse_SERVICE_UNKNOWN = 3
+} grpc_health_v1_HealthCheckResponse_ServingStatus;
+
+
+/* grpc.health.v1.HealthCheckRequest */
+
+UPB_INLINE grpc_health_v1_HealthCheckRequest *grpc_health_v1_HealthCheckRequest_new(upb_arena *arena) {
+  return (grpc_health_v1_HealthCheckRequest *)upb_msg_new(&grpc_health_v1_HealthCheckRequest_msginit, arena);
+}
+UPB_INLINE grpc_health_v1_HealthCheckRequest *grpc_health_v1_HealthCheckRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_health_v1_HealthCheckRequest *ret = grpc_health_v1_HealthCheckRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_health_v1_HealthCheckRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_health_v1_HealthCheckRequest_serialize(const grpc_health_v1_HealthCheckRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_health_v1_HealthCheckRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_health_v1_HealthCheckRequest_service(const grpc_health_v1_HealthCheckRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_health_v1_HealthCheckRequest_set_service(grpc_health_v1_HealthCheckRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.health.v1.HealthCheckResponse */
+
+UPB_INLINE grpc_health_v1_HealthCheckResponse *grpc_health_v1_HealthCheckResponse_new(upb_arena *arena) {
+  return (grpc_health_v1_HealthCheckResponse *)upb_msg_new(&grpc_health_v1_HealthCheckResponse_msginit, arena);
+}
+UPB_INLINE grpc_health_v1_HealthCheckResponse *grpc_health_v1_HealthCheckResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_health_v1_HealthCheckResponse *ret = grpc_health_v1_HealthCheckResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_health_v1_HealthCheckResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_health_v1_HealthCheckResponse_serialize(const grpc_health_v1_HealthCheckResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_health_v1_HealthCheckResponse_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_health_v1_HealthCheckResponse_status(const grpc_health_v1_HealthCheckResponse *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_health_v1_HealthCheckResponse_set_status(grpc_health_v1_HealthCheckResponse *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h
new file mode 100644
index 0000000..7be83b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h	
@@ -0,0 +1,417 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/lb/v1/load_balancer.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_lb_v1_LoadBalanceRequest;
+struct grpc_lb_v1_InitialLoadBalanceRequest;
+struct grpc_lb_v1_ClientStatsPerToken;
+struct grpc_lb_v1_ClientStats;
+struct grpc_lb_v1_LoadBalanceResponse;
+struct grpc_lb_v1_InitialLoadBalanceResponse;
+struct grpc_lb_v1_ServerList;
+struct grpc_lb_v1_Server;
+struct grpc_lb_v1_FallbackResponse;
+typedef struct grpc_lb_v1_LoadBalanceRequest grpc_lb_v1_LoadBalanceRequest;
+typedef struct grpc_lb_v1_InitialLoadBalanceRequest grpc_lb_v1_InitialLoadBalanceRequest;
+typedef struct grpc_lb_v1_ClientStatsPerToken grpc_lb_v1_ClientStatsPerToken;
+typedef struct grpc_lb_v1_ClientStats grpc_lb_v1_ClientStats;
+typedef struct grpc_lb_v1_LoadBalanceResponse grpc_lb_v1_LoadBalanceResponse;
+typedef struct grpc_lb_v1_InitialLoadBalanceResponse grpc_lb_v1_InitialLoadBalanceResponse;
+typedef struct grpc_lb_v1_ServerList grpc_lb_v1_ServerList;
+typedef struct grpc_lb_v1_Server grpc_lb_v1_Server;
+typedef struct grpc_lb_v1_FallbackResponse grpc_lb_v1_FallbackResponse;
+extern const upb_msglayout grpc_lb_v1_LoadBalanceRequest_msginit;
+extern const upb_msglayout grpc_lb_v1_InitialLoadBalanceRequest_msginit;
+extern const upb_msglayout grpc_lb_v1_ClientStatsPerToken_msginit;
+extern const upb_msglayout grpc_lb_v1_ClientStats_msginit;
+extern const upb_msglayout grpc_lb_v1_LoadBalanceResponse_msginit;
+extern const upb_msglayout grpc_lb_v1_InitialLoadBalanceResponse_msginit;
+extern const upb_msglayout grpc_lb_v1_ServerList_msginit;
+extern const upb_msglayout grpc_lb_v1_Server_msginit;
+extern const upb_msglayout grpc_lb_v1_FallbackResponse_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+
+/* grpc.lb.v1.LoadBalanceRequest */
+
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest *grpc_lb_v1_LoadBalanceRequest_new(upb_arena *arena) {
+  return (grpc_lb_v1_LoadBalanceRequest *)upb_msg_new(&grpc_lb_v1_LoadBalanceRequest_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest *grpc_lb_v1_LoadBalanceRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_LoadBalanceRequest *ret = grpc_lb_v1_LoadBalanceRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_LoadBalanceRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_LoadBalanceRequest_serialize(const grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_LoadBalanceRequest_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_initial_request = 1,
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_client_stats = 2,
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_NOT_SET = 0
+} grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases;
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_case(const grpc_lb_v1_LoadBalanceRequest* msg) { return (grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_lb_v1_LoadBalanceRequest_has_initial_request(const grpc_lb_v1_LoadBalanceRequest *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_lb_v1_InitialLoadBalanceRequest* grpc_lb_v1_LoadBalanceRequest_initial_request(const grpc_lb_v1_LoadBalanceRequest *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_InitialLoadBalanceRequest*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceRequest_has_client_stats(const grpc_lb_v1_LoadBalanceRequest *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_lb_v1_ClientStats* grpc_lb_v1_LoadBalanceRequest_client_stats(const grpc_lb_v1_LoadBalanceRequest *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_ClientStats*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void grpc_lb_v1_LoadBalanceRequest_set_initial_request(grpc_lb_v1_LoadBalanceRequest *msg, grpc_lb_v1_InitialLoadBalanceRequest* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_InitialLoadBalanceRequest*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_lb_v1_InitialLoadBalanceRequest* grpc_lb_v1_LoadBalanceRequest_mutable_initial_request(grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena) {
+  struct grpc_lb_v1_InitialLoadBalanceRequest* sub = (struct grpc_lb_v1_InitialLoadBalanceRequest*)grpc_lb_v1_LoadBalanceRequest_initial_request(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_InitialLoadBalanceRequest*)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceRequest_set_initial_request(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceRequest_set_client_stats(grpc_lb_v1_LoadBalanceRequest *msg, grpc_lb_v1_ClientStats* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_ClientStats*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_lb_v1_ClientStats* grpc_lb_v1_LoadBalanceRequest_mutable_client_stats(grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ClientStats* sub = (struct grpc_lb_v1_ClientStats*)grpc_lb_v1_LoadBalanceRequest_client_stats(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_ClientStats*)upb_msg_new(&grpc_lb_v1_ClientStats_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceRequest_set_client_stats(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.InitialLoadBalanceRequest */
+
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceRequest *grpc_lb_v1_InitialLoadBalanceRequest_new(upb_arena *arena) {
+  return (grpc_lb_v1_InitialLoadBalanceRequest *)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceRequest *grpc_lb_v1_InitialLoadBalanceRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_InitialLoadBalanceRequest *ret = grpc_lb_v1_InitialLoadBalanceRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_InitialLoadBalanceRequest_serialize(const grpc_lb_v1_InitialLoadBalanceRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_InitialLoadBalanceRequest_name(const grpc_lb_v1_InitialLoadBalanceRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceRequest_set_name(grpc_lb_v1_InitialLoadBalanceRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.lb.v1.ClientStatsPerToken */
+
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken *grpc_lb_v1_ClientStatsPerToken_new(upb_arena *arena) {
+  return (grpc_lb_v1_ClientStatsPerToken *)upb_msg_new(&grpc_lb_v1_ClientStatsPerToken_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken *grpc_lb_v1_ClientStatsPerToken_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ClientStatsPerToken *ret = grpc_lb_v1_ClientStatsPerToken_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ClientStatsPerToken_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ClientStatsPerToken_serialize(const grpc_lb_v1_ClientStatsPerToken *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ClientStatsPerToken_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_ClientStatsPerToken_load_balance_token(const grpc_lb_v1_ClientStatsPerToken *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStatsPerToken_num_calls(const grpc_lb_v1_ClientStatsPerToken *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_lb_v1_ClientStatsPerToken_set_load_balance_token(grpc_lb_v1_ClientStatsPerToken *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStatsPerToken_set_num_calls(grpc_lb_v1_ClientStatsPerToken *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.lb.v1.ClientStats */
+
+UPB_INLINE grpc_lb_v1_ClientStats *grpc_lb_v1_ClientStats_new(upb_arena *arena) {
+  return (grpc_lb_v1_ClientStats *)upb_msg_new(&grpc_lb_v1_ClientStats_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ClientStats *grpc_lb_v1_ClientStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ClientStats *ret = grpc_lb_v1_ClientStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ClientStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ClientStats_serialize(const grpc_lb_v1_ClientStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ClientStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Timestamp* grpc_lb_v1_ClientStats_timestamp(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(32, 32)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_started(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished_with_client_failed_to_send(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished_known_received(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE const grpc_lb_v1_ClientStatsPerToken* const* grpc_lb_v1_ClientStats_calls_finished_with_drop(const grpc_lb_v1_ClientStats *msg, size_t *len) { return (const grpc_lb_v1_ClientStatsPerToken* const*)_upb_array_accessor(msg, UPB_SIZE(36, 40), len); }
+
+UPB_INLINE void grpc_lb_v1_ClientStats_set_timestamp(grpc_lb_v1_ClientStats *msg, struct google_protobuf_Timestamp* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* grpc_lb_v1_ClientStats_mutable_timestamp(grpc_lb_v1_ClientStats *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)grpc_lb_v1_ClientStats_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_ClientStats_set_timestamp(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_started(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished_with_client_failed_to_send(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished_known_received(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken** grpc_lb_v1_ClientStats_mutable_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, size_t *len) {
+  return (grpc_lb_v1_ClientStatsPerToken**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 40), len);
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken** grpc_lb_v1_ClientStats_resize_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, size_t len, upb_arena *arena) {
+  return (grpc_lb_v1_ClientStatsPerToken**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_lb_v1_ClientStatsPerToken* grpc_lb_v1_ClientStats_add_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ClientStatsPerToken* sub = (struct grpc_lb_v1_ClientStatsPerToken*)upb_msg_new(&grpc_lb_v1_ClientStatsPerToken_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.lb.v1.LoadBalanceResponse */
+
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse *grpc_lb_v1_LoadBalanceResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_LoadBalanceResponse *)upb_msg_new(&grpc_lb_v1_LoadBalanceResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse *grpc_lb_v1_LoadBalanceResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_LoadBalanceResponse *ret = grpc_lb_v1_LoadBalanceResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_LoadBalanceResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_LoadBalanceResponse_serialize(const grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_LoadBalanceResponse_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_initial_response = 1,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_server_list = 2,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_fallback_response = 3,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_NOT_SET = 0
+} grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases;
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_case(const grpc_lb_v1_LoadBalanceResponse* msg) { return (grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_initial_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_lb_v1_InitialLoadBalanceResponse* grpc_lb_v1_LoadBalanceResponse_initial_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_InitialLoadBalanceResponse*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_server_list(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_lb_v1_ServerList* grpc_lb_v1_LoadBalanceResponse_server_list(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_ServerList*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_fallback_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const grpc_lb_v1_FallbackResponse* grpc_lb_v1_LoadBalanceResponse_fallback_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_FallbackResponse*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_initial_response(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_InitialLoadBalanceResponse* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_InitialLoadBalanceResponse*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_lb_v1_InitialLoadBalanceResponse* grpc_lb_v1_LoadBalanceResponse_mutable_initial_response(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_InitialLoadBalanceResponse* sub = (struct grpc_lb_v1_InitialLoadBalanceResponse*)grpc_lb_v1_LoadBalanceResponse_initial_response(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_InitialLoadBalanceResponse*)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_initial_response(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_server_list(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_ServerList* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_ServerList*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_lb_v1_ServerList* grpc_lb_v1_LoadBalanceResponse_mutable_server_list(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ServerList* sub = (struct grpc_lb_v1_ServerList*)grpc_lb_v1_LoadBalanceResponse_server_list(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_ServerList*)upb_msg_new(&grpc_lb_v1_ServerList_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_server_list(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_fallback_response(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_FallbackResponse* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_FallbackResponse*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct grpc_lb_v1_FallbackResponse* grpc_lb_v1_LoadBalanceResponse_mutable_fallback_response(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_FallbackResponse* sub = (struct grpc_lb_v1_FallbackResponse*)grpc_lb_v1_LoadBalanceResponse_fallback_response(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_FallbackResponse*)upb_msg_new(&grpc_lb_v1_FallbackResponse_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_fallback_response(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.InitialLoadBalanceResponse */
+
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceResponse *grpc_lb_v1_InitialLoadBalanceResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_InitialLoadBalanceResponse *)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceResponse *grpc_lb_v1_InitialLoadBalanceResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_InitialLoadBalanceResponse *ret = grpc_lb_v1_InitialLoadBalanceResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_InitialLoadBalanceResponse_serialize(const grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_InitialLoadBalanceResponse_load_balancer_delegate(const grpc_lb_v1_InitialLoadBalanceResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval(const grpc_lb_v1_InitialLoadBalanceResponse *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceResponse_set_load_balancer_delegate(grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceResponse_set_client_stats_report_interval(grpc_lb_v1_InitialLoadBalanceResponse *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* grpc_lb_v1_InitialLoadBalanceResponse_mutable_client_stats_report_interval(grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_InitialLoadBalanceResponse_set_client_stats_report_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.ServerList */
+
+UPB_INLINE grpc_lb_v1_ServerList *grpc_lb_v1_ServerList_new(upb_arena *arena) {
+  return (grpc_lb_v1_ServerList *)upb_msg_new(&grpc_lb_v1_ServerList_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ServerList *grpc_lb_v1_ServerList_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ServerList *ret = grpc_lb_v1_ServerList_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ServerList_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ServerList_serialize(const grpc_lb_v1_ServerList *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ServerList_msginit, arena, len);
+}
+
+UPB_INLINE const grpc_lb_v1_Server* const* grpc_lb_v1_ServerList_servers(const grpc_lb_v1_ServerList *msg, size_t *len) { return (const grpc_lb_v1_Server* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE grpc_lb_v1_Server** grpc_lb_v1_ServerList_mutable_servers(grpc_lb_v1_ServerList *msg, size_t *len) {
+  return (grpc_lb_v1_Server**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE grpc_lb_v1_Server** grpc_lb_v1_ServerList_resize_servers(grpc_lb_v1_ServerList *msg, size_t len, upb_arena *arena) {
+  return (grpc_lb_v1_Server**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_lb_v1_Server* grpc_lb_v1_ServerList_add_servers(grpc_lb_v1_ServerList *msg, upb_arena *arena) {
+  struct grpc_lb_v1_Server* sub = (struct grpc_lb_v1_Server*)upb_msg_new(&grpc_lb_v1_Server_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.lb.v1.Server */
+
+UPB_INLINE grpc_lb_v1_Server *grpc_lb_v1_Server_new(upb_arena *arena) {
+  return (grpc_lb_v1_Server *)upb_msg_new(&grpc_lb_v1_Server_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_Server *grpc_lb_v1_Server_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_Server *ret = grpc_lb_v1_Server_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_Server_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_Server_serialize(const grpc_lb_v1_Server *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_Server_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_Server_ip_address(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t grpc_lb_v1_Server_port(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_lb_v1_Server_load_balance_token(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE bool grpc_lb_v1_Server_drop(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void grpc_lb_v1_Server_set_ip_address(grpc_lb_v1_Server *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_port(grpc_lb_v1_Server *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_load_balance_token(grpc_lb_v1_Server *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_drop(grpc_lb_v1_Server *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+
+/* grpc.lb.v1.FallbackResponse */
+
+UPB_INLINE grpc_lb_v1_FallbackResponse *grpc_lb_v1_FallbackResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_FallbackResponse *)upb_msg_new(&grpc_lb_v1_FallbackResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_FallbackResponse *grpc_lb_v1_FallbackResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_FallbackResponse *ret = grpc_lb_v1_FallbackResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_FallbackResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_FallbackResponse_serialize(const grpc_lb_v1_FallbackResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_FallbackResponse_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h
new file mode 100644
index 0000000..b1d9426
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h	
@@ -0,0 +1,128 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/migrate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_
+#define UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct udpa_annotations_MigrateAnnotation;
+struct udpa_annotations_FieldMigrateAnnotation;
+struct udpa_annotations_FileMigrateAnnotation;
+typedef struct udpa_annotations_MigrateAnnotation udpa_annotations_MigrateAnnotation;
+typedef struct udpa_annotations_FieldMigrateAnnotation udpa_annotations_FieldMigrateAnnotation;
+typedef struct udpa_annotations_FileMigrateAnnotation udpa_annotations_FileMigrateAnnotation;
+extern const upb_msglayout udpa_annotations_MigrateAnnotation_msginit;
+extern const upb_msglayout udpa_annotations_FieldMigrateAnnotation_msginit;
+extern const upb_msglayout udpa_annotations_FileMigrateAnnotation_msginit;
+
+
+/* udpa.annotations.MigrateAnnotation */
+
+UPB_INLINE udpa_annotations_MigrateAnnotation *udpa_annotations_MigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_MigrateAnnotation *)upb_msg_new(&udpa_annotations_MigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_MigrateAnnotation *udpa_annotations_MigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_MigrateAnnotation *ret = udpa_annotations_MigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_MigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_MigrateAnnotation_serialize(const udpa_annotations_MigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_MigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_MigrateAnnotation_rename(const udpa_annotations_MigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_annotations_MigrateAnnotation_set_rename(udpa_annotations_MigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* udpa.annotations.FieldMigrateAnnotation */
+
+UPB_INLINE udpa_annotations_FieldMigrateAnnotation *udpa_annotations_FieldMigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_FieldMigrateAnnotation *)upb_msg_new(&udpa_annotations_FieldMigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_FieldMigrateAnnotation *udpa_annotations_FieldMigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_FieldMigrateAnnotation *ret = udpa_annotations_FieldMigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_FieldMigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_FieldMigrateAnnotation_serialize(const udpa_annotations_FieldMigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_FieldMigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_FieldMigrateAnnotation_rename(const udpa_annotations_FieldMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview udpa_annotations_FieldMigrateAnnotation_oneof_promotion(const udpa_annotations_FieldMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void udpa_annotations_FieldMigrateAnnotation_set_rename(udpa_annotations_FieldMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void udpa_annotations_FieldMigrateAnnotation_set_oneof_promotion(udpa_annotations_FieldMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* udpa.annotations.FileMigrateAnnotation */
+
+UPB_INLINE udpa_annotations_FileMigrateAnnotation *udpa_annotations_FileMigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_FileMigrateAnnotation *)upb_msg_new(&udpa_annotations_FileMigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_FileMigrateAnnotation *udpa_annotations_FileMigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_FileMigrateAnnotation *ret = udpa_annotations_FileMigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_FileMigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_FileMigrateAnnotation_serialize(const udpa_annotations_FileMigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_FileMigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_FileMigrateAnnotation_move_to_package(const udpa_annotations_FileMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_annotations_FileMigrateAnnotation_set_move_to_package(udpa_annotations_FileMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h
new file mode 100644
index 0000000..bf469fe
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/sensitive.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_
+#define UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h
new file mode 100644
index 0000000..b484173
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h	
@@ -0,0 +1,168 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/data/orca/v1/orca_load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_
+#define UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct udpa_data_orca_v1_OrcaLoadReport;
+struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry;
+struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry;
+typedef struct udpa_data_orca_v1_OrcaLoadReport udpa_data_orca_v1_OrcaLoadReport;
+typedef struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry;
+typedef struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_msginit;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit;
+
+
+/* udpa.data.orca.v1.OrcaLoadReport */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport *udpa_data_orca_v1_OrcaLoadReport_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport *udpa_data_orca_v1_OrcaLoadReport_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport *ret = udpa_data_orca_v1_OrcaLoadReport_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_serialize(const udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_msginit, arena, len);
+}
+
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_cpu_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_mem_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t udpa_data_orca_v1_OrcaLoadReport_rps(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* const* udpa_data_orca_v1_OrcaLoadReport_request_cost(const udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) { return (const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* const* udpa_data_orca_v1_OrcaLoadReport_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) { return (const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_cpu_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_mem_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_rps(udpa_data_orca_v1_OrcaLoadReport *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry** udpa_data_orca_v1_OrcaLoadReport_mutable_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry** udpa_data_orca_v1_OrcaLoadReport_resize_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, size_t len, upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* udpa_data_orca_v1_OrcaLoadReport_add_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena) {
+  struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* sub = (struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry*)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry** udpa_data_orca_v1_OrcaLoadReport_mutable_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry** udpa_data_orca_v1_OrcaLoadReport_resize_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, size_t len, upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* udpa_data_orca_v1_OrcaLoadReport_add_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena) {
+  struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* sub = (struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry*)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* udpa.data.orca.v1.OrcaLoadReport.RequestCostEntry */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *ret = udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_serialize(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_key(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_value(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_set_key(udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_set_value(udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* udpa.data.orca.v1.OrcaLoadReport.UtilizationEntry */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *ret = udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_serialize(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_key(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_value(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_set_key(udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_set_value(udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/validate/validate.upb.h b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/validate/validate.upb.h
new file mode 100644
index 0000000..72cb6cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/ext/upb-generated/validate/validate.upb.h	
@@ -0,0 +1,2091 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     validate/validate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef VALIDATE_VALIDATE_PROTO_UPB_H_
+#define VALIDATE_VALIDATE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct validate_FieldRules;
+struct validate_FloatRules;
+struct validate_DoubleRules;
+struct validate_Int32Rules;
+struct validate_Int64Rules;
+struct validate_UInt32Rules;
+struct validate_UInt64Rules;
+struct validate_SInt32Rules;
+struct validate_SInt64Rules;
+struct validate_Fixed32Rules;
+struct validate_Fixed64Rules;
+struct validate_SFixed32Rules;
+struct validate_SFixed64Rules;
+struct validate_BoolRules;
+struct validate_StringRules;
+struct validate_BytesRules;
+struct validate_EnumRules;
+struct validate_MessageRules;
+struct validate_RepeatedRules;
+struct validate_MapRules;
+struct validate_AnyRules;
+struct validate_DurationRules;
+struct validate_TimestampRules;
+typedef struct validate_FieldRules validate_FieldRules;
+typedef struct validate_FloatRules validate_FloatRules;
+typedef struct validate_DoubleRules validate_DoubleRules;
+typedef struct validate_Int32Rules validate_Int32Rules;
+typedef struct validate_Int64Rules validate_Int64Rules;
+typedef struct validate_UInt32Rules validate_UInt32Rules;
+typedef struct validate_UInt64Rules validate_UInt64Rules;
+typedef struct validate_SInt32Rules validate_SInt32Rules;
+typedef struct validate_SInt64Rules validate_SInt64Rules;
+typedef struct validate_Fixed32Rules validate_Fixed32Rules;
+typedef struct validate_Fixed64Rules validate_Fixed64Rules;
+typedef struct validate_SFixed32Rules validate_SFixed32Rules;
+typedef struct validate_SFixed64Rules validate_SFixed64Rules;
+typedef struct validate_BoolRules validate_BoolRules;
+typedef struct validate_StringRules validate_StringRules;
+typedef struct validate_BytesRules validate_BytesRules;
+typedef struct validate_EnumRules validate_EnumRules;
+typedef struct validate_MessageRules validate_MessageRules;
+typedef struct validate_RepeatedRules validate_RepeatedRules;
+typedef struct validate_MapRules validate_MapRules;
+typedef struct validate_AnyRules validate_AnyRules;
+typedef struct validate_DurationRules validate_DurationRules;
+typedef struct validate_TimestampRules validate_TimestampRules;
+extern const upb_msglayout validate_FieldRules_msginit;
+extern const upb_msglayout validate_FloatRules_msginit;
+extern const upb_msglayout validate_DoubleRules_msginit;
+extern const upb_msglayout validate_Int32Rules_msginit;
+extern const upb_msglayout validate_Int64Rules_msginit;
+extern const upb_msglayout validate_UInt32Rules_msginit;
+extern const upb_msglayout validate_UInt64Rules_msginit;
+extern const upb_msglayout validate_SInt32Rules_msginit;
+extern const upb_msglayout validate_SInt64Rules_msginit;
+extern const upb_msglayout validate_Fixed32Rules_msginit;
+extern const upb_msglayout validate_Fixed64Rules_msginit;
+extern const upb_msglayout validate_SFixed32Rules_msginit;
+extern const upb_msglayout validate_SFixed64Rules_msginit;
+extern const upb_msglayout validate_BoolRules_msginit;
+extern const upb_msglayout validate_StringRules_msginit;
+extern const upb_msglayout validate_BytesRules_msginit;
+extern const upb_msglayout validate_EnumRules_msginit;
+extern const upb_msglayout validate_MessageRules_msginit;
+extern const upb_msglayout validate_RepeatedRules_msginit;
+extern const upb_msglayout validate_MapRules_msginit;
+extern const upb_msglayout validate_AnyRules_msginit;
+extern const upb_msglayout validate_DurationRules_msginit;
+extern const upb_msglayout validate_TimestampRules_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+typedef enum {
+  validate_UNKNOWN = 0,
+  validate_HTTP_HEADER_NAME = 1,
+  validate_HTTP_HEADER_VALUE = 2
+} validate_KnownRegex;
+
+
+/* validate.FieldRules */
+
+UPB_INLINE validate_FieldRules *validate_FieldRules_new(upb_arena *arena) {
+  return (validate_FieldRules *)upb_msg_new(&validate_FieldRules_msginit, arena);
+}
+UPB_INLINE validate_FieldRules *validate_FieldRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_FieldRules *ret = validate_FieldRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_FieldRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_FieldRules_serialize(const validate_FieldRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_FieldRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_FieldRules_type_float = 1,
+  validate_FieldRules_type_double = 2,
+  validate_FieldRules_type_int32 = 3,
+  validate_FieldRules_type_int64 = 4,
+  validate_FieldRules_type_uint32 = 5,
+  validate_FieldRules_type_uint64 = 6,
+  validate_FieldRules_type_sint32 = 7,
+  validate_FieldRules_type_sint64 = 8,
+  validate_FieldRules_type_fixed32 = 9,
+  validate_FieldRules_type_fixed64 = 10,
+  validate_FieldRules_type_sfixed32 = 11,
+  validate_FieldRules_type_sfixed64 = 12,
+  validate_FieldRules_type_bool = 13,
+  validate_FieldRules_type_string = 14,
+  validate_FieldRules_type_bytes = 15,
+  validate_FieldRules_type_enum = 16,
+  validate_FieldRules_type_repeated = 18,
+  validate_FieldRules_type_map = 19,
+  validate_FieldRules_type_any = 20,
+  validate_FieldRules_type_duration = 21,
+  validate_FieldRules_type_timestamp = 22,
+  validate_FieldRules_type_NOT_SET = 0
+} validate_FieldRules_type_oneofcases;
+UPB_INLINE validate_FieldRules_type_oneofcases validate_FieldRules_type_case(const validate_FieldRules* msg) { return (validate_FieldRules_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool validate_FieldRules_has_float(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const validate_FloatRules* validate_FieldRules_float(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_FloatRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE bool validate_FieldRules_has_double(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const validate_DoubleRules* validate_FieldRules_double(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_DoubleRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool validate_FieldRules_has_int32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const validate_Int32Rules* validate_FieldRules_int32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Int32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool validate_FieldRules_has_int64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const validate_Int64Rules* validate_FieldRules_int64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Int64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool validate_FieldRules_has_uint32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const validate_UInt32Rules* validate_FieldRules_uint32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_UInt32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+UPB_INLINE bool validate_FieldRules_has_uint64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 6); }
+UPB_INLINE const validate_UInt64Rules* validate_FieldRules_uint64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_UInt64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 6, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sint32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 7); }
+UPB_INLINE const validate_SInt32Rules* validate_FieldRules_sint32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SInt32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 7, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sint64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 8); }
+UPB_INLINE const validate_SInt64Rules* validate_FieldRules_sint64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SInt64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 8, NULL); }
+UPB_INLINE bool validate_FieldRules_has_fixed32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 9); }
+UPB_INLINE const validate_Fixed32Rules* validate_FieldRules_fixed32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Fixed32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 9, NULL); }
+UPB_INLINE bool validate_FieldRules_has_fixed64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 10); }
+UPB_INLINE const validate_Fixed64Rules* validate_FieldRules_fixed64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Fixed64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 10, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sfixed32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 11); }
+UPB_INLINE const validate_SFixed32Rules* validate_FieldRules_sfixed32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SFixed32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 11, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sfixed64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 12); }
+UPB_INLINE const validate_SFixed64Rules* validate_FieldRules_sfixed64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SFixed64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 12, NULL); }
+UPB_INLINE bool validate_FieldRules_has_bool(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 13); }
+UPB_INLINE const validate_BoolRules* validate_FieldRules_bool(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_BoolRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 13, NULL); }
+UPB_INLINE bool validate_FieldRules_has_string(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 14); }
+UPB_INLINE const validate_StringRules* validate_FieldRules_string(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_StringRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 14, NULL); }
+UPB_INLINE bool validate_FieldRules_has_bytes(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 15); }
+UPB_INLINE const validate_BytesRules* validate_FieldRules_bytes(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_BytesRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 15, NULL); }
+UPB_INLINE bool validate_FieldRules_has_enum(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 16); }
+UPB_INLINE const validate_EnumRules* validate_FieldRules_enum(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_EnumRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 16, NULL); }
+UPB_INLINE bool validate_FieldRules_has_message(const validate_FieldRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE const validate_MessageRules* validate_FieldRules_message(const validate_FieldRules *msg) { return UPB_FIELD_AT(msg, const validate_MessageRules*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool validate_FieldRules_has_repeated(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 18); }
+UPB_INLINE const validate_RepeatedRules* validate_FieldRules_repeated(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_RepeatedRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 18, NULL); }
+UPB_INLINE bool validate_FieldRules_has_map(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 19); }
+UPB_INLINE const validate_MapRules* validate_FieldRules_map(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_MapRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 19, NULL); }
+UPB_INLINE bool validate_FieldRules_has_any(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 20); }
+UPB_INLINE const validate_AnyRules* validate_FieldRules_any(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_AnyRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 20, NULL); }
+UPB_INLINE bool validate_FieldRules_has_duration(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 21); }
+UPB_INLINE const validate_DurationRules* validate_FieldRules_duration(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_DurationRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 21, NULL); }
+UPB_INLINE bool validate_FieldRules_has_timestamp(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 22); }
+UPB_INLINE const validate_TimestampRules* validate_FieldRules_timestamp(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_TimestampRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 22, NULL); }
+
+UPB_INLINE void validate_FieldRules_set_float(validate_FieldRules *msg, validate_FloatRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_FloatRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct validate_FloatRules* validate_FieldRules_mutable_float(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_FloatRules* sub = (struct validate_FloatRules*)validate_FieldRules_float(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FloatRules*)upb_msg_new(&validate_FloatRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_float(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_double(validate_FieldRules *msg, validate_DoubleRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_DoubleRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct validate_DoubleRules* validate_FieldRules_mutable_double(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_DoubleRules* sub = (struct validate_DoubleRules*)validate_FieldRules_double(msg);
+  if (sub == NULL) {
+    sub = (struct validate_DoubleRules*)upb_msg_new(&validate_DoubleRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_double(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_int32(validate_FieldRules *msg, validate_Int32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Int32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct validate_Int32Rules* validate_FieldRules_mutable_int32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Int32Rules* sub = (struct validate_Int32Rules*)validate_FieldRules_int32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Int32Rules*)upb_msg_new(&validate_Int32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_int32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_int64(validate_FieldRules *msg, validate_Int64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Int64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct validate_Int64Rules* validate_FieldRules_mutable_int64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Int64Rules* sub = (struct validate_Int64Rules*)validate_FieldRules_int64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Int64Rules*)upb_msg_new(&validate_Int64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_int64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_uint32(validate_FieldRules *msg, validate_UInt32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_UInt32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct validate_UInt32Rules* validate_FieldRules_mutable_uint32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_UInt32Rules* sub = (struct validate_UInt32Rules*)validate_FieldRules_uint32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_UInt32Rules*)upb_msg_new(&validate_UInt32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_uint32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_uint64(validate_FieldRules *msg, validate_UInt64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_UInt64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 6);
+}
+UPB_INLINE struct validate_UInt64Rules* validate_FieldRules_mutable_uint64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_UInt64Rules* sub = (struct validate_UInt64Rules*)validate_FieldRules_uint64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_UInt64Rules*)upb_msg_new(&validate_UInt64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_uint64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sint32(validate_FieldRules *msg, validate_SInt32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SInt32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 7);
+}
+UPB_INLINE struct validate_SInt32Rules* validate_FieldRules_mutable_sint32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SInt32Rules* sub = (struct validate_SInt32Rules*)validate_FieldRules_sint32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SInt32Rules*)upb_msg_new(&validate_SInt32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sint32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sint64(validate_FieldRules *msg, validate_SInt64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SInt64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 8);
+}
+UPB_INLINE struct validate_SInt64Rules* validate_FieldRules_mutable_sint64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SInt64Rules* sub = (struct validate_SInt64Rules*)validate_FieldRules_sint64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SInt64Rules*)upb_msg_new(&validate_SInt64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sint64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_fixed32(validate_FieldRules *msg, validate_Fixed32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Fixed32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 9);
+}
+UPB_INLINE struct validate_Fixed32Rules* validate_FieldRules_mutable_fixed32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Fixed32Rules* sub = (struct validate_Fixed32Rules*)validate_FieldRules_fixed32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Fixed32Rules*)upb_msg_new(&validate_Fixed32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_fixed32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_fixed64(validate_FieldRules *msg, validate_Fixed64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Fixed64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 10);
+}
+UPB_INLINE struct validate_Fixed64Rules* validate_FieldRules_mutable_fixed64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Fixed64Rules* sub = (struct validate_Fixed64Rules*)validate_FieldRules_fixed64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Fixed64Rules*)upb_msg_new(&validate_Fixed64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_fixed64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sfixed32(validate_FieldRules *msg, validate_SFixed32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SFixed32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 11);
+}
+UPB_INLINE struct validate_SFixed32Rules* validate_FieldRules_mutable_sfixed32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SFixed32Rules* sub = (struct validate_SFixed32Rules*)validate_FieldRules_sfixed32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SFixed32Rules*)upb_msg_new(&validate_SFixed32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sfixed32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sfixed64(validate_FieldRules *msg, validate_SFixed64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SFixed64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 12);
+}
+UPB_INLINE struct validate_SFixed64Rules* validate_FieldRules_mutable_sfixed64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SFixed64Rules* sub = (struct validate_SFixed64Rules*)validate_FieldRules_sfixed64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SFixed64Rules*)upb_msg_new(&validate_SFixed64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sfixed64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_bool(validate_FieldRules *msg, validate_BoolRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_BoolRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 13);
+}
+UPB_INLINE struct validate_BoolRules* validate_FieldRules_mutable_bool(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_BoolRules* sub = (struct validate_BoolRules*)validate_FieldRules_bool(msg);
+  if (sub == NULL) {
+    sub = (struct validate_BoolRules*)upb_msg_new(&validate_BoolRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_bool(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_string(validate_FieldRules *msg, validate_StringRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_StringRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 14);
+}
+UPB_INLINE struct validate_StringRules* validate_FieldRules_mutable_string(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_StringRules* sub = (struct validate_StringRules*)validate_FieldRules_string(msg);
+  if (sub == NULL) {
+    sub = (struct validate_StringRules*)upb_msg_new(&validate_StringRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_string(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_bytes(validate_FieldRules *msg, validate_BytesRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_BytesRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 15);
+}
+UPB_INLINE struct validate_BytesRules* validate_FieldRules_mutable_bytes(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_BytesRules* sub = (struct validate_BytesRules*)validate_FieldRules_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct validate_BytesRules*)upb_msg_new(&validate_BytesRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_enum(validate_FieldRules *msg, validate_EnumRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_EnumRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 16);
+}
+UPB_INLINE struct validate_EnumRules* validate_FieldRules_mutable_enum(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_EnumRules* sub = (struct validate_EnumRules*)validate_FieldRules_enum(msg);
+  if (sub == NULL) {
+    sub = (struct validate_EnumRules*)upb_msg_new(&validate_EnumRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_enum(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_message(validate_FieldRules *msg, validate_MessageRules* value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, validate_MessageRules*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct validate_MessageRules* validate_FieldRules_mutable_message(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_MessageRules* sub = (struct validate_MessageRules*)validate_FieldRules_message(msg);
+  if (sub == NULL) {
+    sub = (struct validate_MessageRules*)upb_msg_new(&validate_MessageRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_message(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_repeated(validate_FieldRules *msg, validate_RepeatedRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_RepeatedRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 18);
+}
+UPB_INLINE struct validate_RepeatedRules* validate_FieldRules_mutable_repeated(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_RepeatedRules* sub = (struct validate_RepeatedRules*)validate_FieldRules_repeated(msg);
+  if (sub == NULL) {
+    sub = (struct validate_RepeatedRules*)upb_msg_new(&validate_RepeatedRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_repeated(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_map(validate_FieldRules *msg, validate_MapRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_MapRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 19);
+}
+UPB_INLINE struct validate_MapRules* validate_FieldRules_mutable_map(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_MapRules* sub = (struct validate_MapRules*)validate_FieldRules_map(msg);
+  if (sub == NULL) {
+    sub = (struct validate_MapRules*)upb_msg_new(&validate_MapRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_map(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_any(validate_FieldRules *msg, validate_AnyRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_AnyRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 20);
+}
+UPB_INLINE struct validate_AnyRules* validate_FieldRules_mutable_any(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_AnyRules* sub = (struct validate_AnyRules*)validate_FieldRules_any(msg);
+  if (sub == NULL) {
+    sub = (struct validate_AnyRules*)upb_msg_new(&validate_AnyRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_any(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_duration(validate_FieldRules *msg, validate_DurationRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_DurationRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 21);
+}
+UPB_INLINE struct validate_DurationRules* validate_FieldRules_mutable_duration(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_DurationRules* sub = (struct validate_DurationRules*)validate_FieldRules_duration(msg);
+  if (sub == NULL) {
+    sub = (struct validate_DurationRules*)upb_msg_new(&validate_DurationRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_duration(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_timestamp(validate_FieldRules *msg, validate_TimestampRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_TimestampRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 22);
+}
+UPB_INLINE struct validate_TimestampRules* validate_FieldRules_mutable_timestamp(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_TimestampRules* sub = (struct validate_TimestampRules*)validate_FieldRules_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct validate_TimestampRules*)upb_msg_new(&validate_TimestampRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_timestamp(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.FloatRules */
+
+UPB_INLINE validate_FloatRules *validate_FloatRules_new(upb_arena *arena) {
+  return (validate_FloatRules *)upb_msg_new(&validate_FloatRules_msginit, arena);
+}
+UPB_INLINE validate_FloatRules *validate_FloatRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_FloatRules *ret = validate_FloatRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_FloatRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_FloatRules_serialize(const validate_FloatRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_FloatRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_FloatRules_has_const(const validate_FloatRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE float validate_FloatRules_const(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_FloatRules_has_lt(const validate_FloatRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE float validate_FloatRules_lt(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_FloatRules_has_lte(const validate_FloatRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE float validate_FloatRules_lte(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_FloatRules_has_gt(const validate_FloatRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE float validate_FloatRules_gt(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_FloatRules_has_gte(const validate_FloatRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE float validate_FloatRules_gte(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(20, 20)); }
+UPB_INLINE float const* validate_FloatRules_in(const validate_FloatRules *msg, size_t *len) { return (float const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE float const* validate_FloatRules_not_in(const validate_FloatRules *msg, size_t *len) { return (float const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_FloatRules_set_const(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_lt(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_lte(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_gt(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_gte(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE float* validate_FloatRules_mutable_in(validate_FloatRules *msg, size_t *len) {
+  return (float*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE float* validate_FloatRules_resize_in(validate_FloatRules *msg, size_t len, upb_arena *arena) {
+  return (float*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_FLOAT, arena);
+}
+UPB_INLINE bool validate_FloatRules_add_in(validate_FloatRules *msg, float val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_FLOAT, &val, arena);
+}
+UPB_INLINE float* validate_FloatRules_mutable_not_in(validate_FloatRules *msg, size_t *len) {
+  return (float*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE float* validate_FloatRules_resize_not_in(validate_FloatRules *msg, size_t len, upb_arena *arena) {
+  return (float*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_FLOAT, arena);
+}
+UPB_INLINE bool validate_FloatRules_add_not_in(validate_FloatRules *msg, float val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_FLOAT, &val, arena);
+}
+
+/* validate.DoubleRules */
+
+UPB_INLINE validate_DoubleRules *validate_DoubleRules_new(upb_arena *arena) {
+  return (validate_DoubleRules *)upb_msg_new(&validate_DoubleRules_msginit, arena);
+}
+UPB_INLINE validate_DoubleRules *validate_DoubleRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_DoubleRules *ret = validate_DoubleRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_DoubleRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_DoubleRules_serialize(const validate_DoubleRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_DoubleRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_DoubleRules_has_const(const validate_DoubleRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE double validate_DoubleRules_const(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_DoubleRules_has_lt(const validate_DoubleRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE double validate_DoubleRules_lt(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_DoubleRules_has_lte(const validate_DoubleRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE double validate_DoubleRules_lte(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_DoubleRules_has_gt(const validate_DoubleRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE double validate_DoubleRules_gt(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_DoubleRules_has_gte(const validate_DoubleRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE double validate_DoubleRules_gte(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(40, 40)); }
+UPB_INLINE double const* validate_DoubleRules_in(const validate_DoubleRules *msg, size_t *len) { return (double const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE double const* validate_DoubleRules_not_in(const validate_DoubleRules *msg, size_t *len) { return (double const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_DoubleRules_set_const(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_lt(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_lte(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_gt(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_gte(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE double* validate_DoubleRules_mutable_in(validate_DoubleRules *msg, size_t *len) {
+  return (double*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE double* validate_DoubleRules_resize_in(validate_DoubleRules *msg, size_t len, upb_arena *arena) {
+  return (double*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, arena);
+}
+UPB_INLINE bool validate_DoubleRules_add_in(validate_DoubleRules *msg, double val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, &val, arena);
+}
+UPB_INLINE double* validate_DoubleRules_mutable_not_in(validate_DoubleRules *msg, size_t *len) {
+  return (double*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE double* validate_DoubleRules_resize_not_in(validate_DoubleRules *msg, size_t len, upb_arena *arena) {
+  return (double*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, arena);
+}
+UPB_INLINE bool validate_DoubleRules_add_not_in(validate_DoubleRules *msg, double val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, &val, arena);
+}
+
+/* validate.Int32Rules */
+
+UPB_INLINE validate_Int32Rules *validate_Int32Rules_new(upb_arena *arena) {
+  return (validate_Int32Rules *)upb_msg_new(&validate_Int32Rules_msginit, arena);
+}
+UPB_INLINE validate_Int32Rules *validate_Int32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Int32Rules *ret = validate_Int32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Int32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Int32Rules_serialize(const validate_Int32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Int32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Int32Rules_has_const(const validate_Int32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_Int32Rules_const(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_Int32Rules_has_lt(const validate_Int32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_Int32Rules_lt(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Int32Rules_has_lte(const validate_Int32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_Int32Rules_lte(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_Int32Rules_has_gt(const validate_Int32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_Int32Rules_gt(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Int32Rules_has_gte(const validate_Int32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_Int32Rules_gte(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_Int32Rules_in(const validate_Int32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_Int32Rules_not_in(const validate_Int32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_Int32Rules_set_const(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_lt(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_lte(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_gt(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_gte(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_Int32Rules_mutable_in(validate_Int32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_Int32Rules_resize_in(validate_Int32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_Int32Rules_add_in(validate_Int32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_Int32Rules_mutable_not_in(validate_Int32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_Int32Rules_resize_not_in(validate_Int32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_Int32Rules_add_not_in(validate_Int32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.Int64Rules */
+
+UPB_INLINE validate_Int64Rules *validate_Int64Rules_new(upb_arena *arena) {
+  return (validate_Int64Rules *)upb_msg_new(&validate_Int64Rules_msginit, arena);
+}
+UPB_INLINE validate_Int64Rules *validate_Int64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Int64Rules *ret = validate_Int64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Int64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Int64Rules_serialize(const validate_Int64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Int64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Int64Rules_has_const(const validate_Int64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_Int64Rules_const(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Int64Rules_has_lt(const validate_Int64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_Int64Rules_lt(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Int64Rules_has_lte(const validate_Int64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_Int64Rules_lte(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_Int64Rules_has_gt(const validate_Int64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_Int64Rules_gt(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_Int64Rules_has_gte(const validate_Int64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_Int64Rules_gte(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_Int64Rules_in(const validate_Int64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_Int64Rules_not_in(const validate_Int64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_Int64Rules_set_const(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_lt(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_lte(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_gt(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_gte(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_Int64Rules_mutable_in(validate_Int64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_Int64Rules_resize_in(validate_Int64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_Int64Rules_add_in(validate_Int64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_Int64Rules_mutable_not_in(validate_Int64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_Int64Rules_resize_not_in(validate_Int64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_Int64Rules_add_not_in(validate_Int64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.UInt32Rules */
+
+UPB_INLINE validate_UInt32Rules *validate_UInt32Rules_new(upb_arena *arena) {
+  return (validate_UInt32Rules *)upb_msg_new(&validate_UInt32Rules_msginit, arena);
+}
+UPB_INLINE validate_UInt32Rules *validate_UInt32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_UInt32Rules *ret = validate_UInt32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_UInt32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_UInt32Rules_serialize(const validate_UInt32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_UInt32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_UInt32Rules_has_const(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint32_t validate_UInt32Rules_const(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_UInt32Rules_has_lt(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint32_t validate_UInt32Rules_lt(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_UInt32Rules_has_lte(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint32_t validate_UInt32Rules_lte(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_UInt32Rules_has_gt(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint32_t validate_UInt32Rules_gt(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_UInt32Rules_has_gte(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint32_t validate_UInt32Rules_gte(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE uint32_t const* validate_UInt32Rules_in(const validate_UInt32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE uint32_t const* validate_UInt32Rules_not_in(const validate_UInt32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_UInt32Rules_set_const(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_lt(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_lte(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_gt(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_gte(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_mutable_in(validate_UInt32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_resize_in(validate_UInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_UInt32Rules_add_in(validate_UInt32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_mutable_not_in(validate_UInt32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_resize_not_in(validate_UInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_UInt32Rules_add_not_in(validate_UInt32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+
+/* validate.UInt64Rules */
+
+UPB_INLINE validate_UInt64Rules *validate_UInt64Rules_new(upb_arena *arena) {
+  return (validate_UInt64Rules *)upb_msg_new(&validate_UInt64Rules_msginit, arena);
+}
+UPB_INLINE validate_UInt64Rules *validate_UInt64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_UInt64Rules *ret = validate_UInt64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_UInt64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_UInt64Rules_serialize(const validate_UInt64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_UInt64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_UInt64Rules_has_const(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_UInt64Rules_const(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_UInt64Rules_has_lt(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_UInt64Rules_lt(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_UInt64Rules_has_lte(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_UInt64Rules_lte(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_UInt64Rules_has_gt(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_UInt64Rules_gt(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_UInt64Rules_has_gte(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_UInt64Rules_gte(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE uint64_t const* validate_UInt64Rules_in(const validate_UInt64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE uint64_t const* validate_UInt64Rules_not_in(const validate_UInt64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_UInt64Rules_set_const(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_lt(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_lte(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_gt(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_gte(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_mutable_in(validate_UInt64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_resize_in(validate_UInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_UInt64Rules_add_in(validate_UInt64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_mutable_not_in(validate_UInt64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_resize_not_in(validate_UInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_UInt64Rules_add_not_in(validate_UInt64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+
+/* validate.SInt32Rules */
+
+UPB_INLINE validate_SInt32Rules *validate_SInt32Rules_new(upb_arena *arena) {
+  return (validate_SInt32Rules *)upb_msg_new(&validate_SInt32Rules_msginit, arena);
+}
+UPB_INLINE validate_SInt32Rules *validate_SInt32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SInt32Rules *ret = validate_SInt32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SInt32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SInt32Rules_serialize(const validate_SInt32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SInt32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SInt32Rules_has_const(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_SInt32Rules_const(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_SInt32Rules_has_lt(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_SInt32Rules_lt(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SInt32Rules_has_lte(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_SInt32Rules_lte(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_SInt32Rules_has_gt(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_SInt32Rules_gt(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SInt32Rules_has_gte(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_SInt32Rules_gte(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_SInt32Rules_in(const validate_SInt32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_SInt32Rules_not_in(const validate_SInt32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_SInt32Rules_set_const(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_lt(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_lte(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_gt(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_gte(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_SInt32Rules_mutable_in(validate_SInt32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_resize_in(validate_SInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SInt32Rules_add_in(validate_SInt32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_mutable_not_in(validate_SInt32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_resize_not_in(validate_SInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SInt32Rules_add_not_in(validate_SInt32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.SInt64Rules */
+
+UPB_INLINE validate_SInt64Rules *validate_SInt64Rules_new(upb_arena *arena) {
+  return (validate_SInt64Rules *)upb_msg_new(&validate_SInt64Rules_msginit, arena);
+}
+UPB_INLINE validate_SInt64Rules *validate_SInt64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SInt64Rules *ret = validate_SInt64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SInt64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SInt64Rules_serialize(const validate_SInt64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SInt64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SInt64Rules_has_const(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_SInt64Rules_const(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SInt64Rules_has_lt(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_SInt64Rules_lt(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SInt64Rules_has_lte(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_SInt64Rules_lte(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_SInt64Rules_has_gt(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_SInt64Rules_gt(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_SInt64Rules_has_gte(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_SInt64Rules_gte(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_SInt64Rules_in(const validate_SInt64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_SInt64Rules_not_in(const validate_SInt64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_SInt64Rules_set_const(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_lt(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_lte(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_gt(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_gte(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_SInt64Rules_mutable_in(validate_SInt64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_resize_in(validate_SInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SInt64Rules_add_in(validate_SInt64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_mutable_not_in(validate_SInt64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_resize_not_in(validate_SInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SInt64Rules_add_not_in(validate_SInt64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.Fixed32Rules */
+
+UPB_INLINE validate_Fixed32Rules *validate_Fixed32Rules_new(upb_arena *arena) {
+  return (validate_Fixed32Rules *)upb_msg_new(&validate_Fixed32Rules_msginit, arena);
+}
+UPB_INLINE validate_Fixed32Rules *validate_Fixed32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Fixed32Rules *ret = validate_Fixed32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Fixed32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Fixed32Rules_serialize(const validate_Fixed32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Fixed32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Fixed32Rules_has_const(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint32_t validate_Fixed32Rules_const(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_Fixed32Rules_has_lt(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint32_t validate_Fixed32Rules_lt(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Fixed32Rules_has_lte(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint32_t validate_Fixed32Rules_lte(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_Fixed32Rules_has_gt(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint32_t validate_Fixed32Rules_gt(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Fixed32Rules_has_gte(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint32_t validate_Fixed32Rules_gte(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE uint32_t const* validate_Fixed32Rules_in(const validate_Fixed32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE uint32_t const* validate_Fixed32Rules_not_in(const validate_Fixed32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_Fixed32Rules_set_const(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_lt(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_lte(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_gt(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_gte(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_mutable_in(validate_Fixed32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_resize_in(validate_Fixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_Fixed32Rules_add_in(validate_Fixed32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_mutable_not_in(validate_Fixed32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_resize_not_in(validate_Fixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_Fixed32Rules_add_not_in(validate_Fixed32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+
+/* validate.Fixed64Rules */
+
+UPB_INLINE validate_Fixed64Rules *validate_Fixed64Rules_new(upb_arena *arena) {
+  return (validate_Fixed64Rules *)upb_msg_new(&validate_Fixed64Rules_msginit, arena);
+}
+UPB_INLINE validate_Fixed64Rules *validate_Fixed64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Fixed64Rules *ret = validate_Fixed64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Fixed64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Fixed64Rules_serialize(const validate_Fixed64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Fixed64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Fixed64Rules_has_const(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_Fixed64Rules_const(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Fixed64Rules_has_lt(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_Fixed64Rules_lt(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Fixed64Rules_has_lte(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_Fixed64Rules_lte(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_Fixed64Rules_has_gt(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_Fixed64Rules_gt(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_Fixed64Rules_has_gte(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_Fixed64Rules_gte(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE uint64_t const* validate_Fixed64Rules_in(const validate_Fixed64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE uint64_t const* validate_Fixed64Rules_not_in(const validate_Fixed64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_Fixed64Rules_set_const(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_lt(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_lte(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_gt(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_gte(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_mutable_in(validate_Fixed64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_resize_in(validate_Fixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_Fixed64Rules_add_in(validate_Fixed64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_mutable_not_in(validate_Fixed64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_resize_not_in(validate_Fixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_Fixed64Rules_add_not_in(validate_Fixed64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+
+/* validate.SFixed32Rules */
+
+UPB_INLINE validate_SFixed32Rules *validate_SFixed32Rules_new(upb_arena *arena) {
+  return (validate_SFixed32Rules *)upb_msg_new(&validate_SFixed32Rules_msginit, arena);
+}
+UPB_INLINE validate_SFixed32Rules *validate_SFixed32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SFixed32Rules *ret = validate_SFixed32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SFixed32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SFixed32Rules_serialize(const validate_SFixed32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SFixed32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SFixed32Rules_has_const(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_SFixed32Rules_const(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_SFixed32Rules_has_lt(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_SFixed32Rules_lt(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SFixed32Rules_has_lte(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_SFixed32Rules_lte(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_SFixed32Rules_has_gt(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_SFixed32Rules_gt(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SFixed32Rules_has_gte(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_SFixed32Rules_gte(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_SFixed32Rules_in(const validate_SFixed32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_SFixed32Rules_not_in(const validate_SFixed32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_SFixed32Rules_set_const(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_lt(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_lte(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_gt(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_gte(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_mutable_in(validate_SFixed32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_resize_in(validate_SFixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SFixed32Rules_add_in(validate_SFixed32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_mutable_not_in(validate_SFixed32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_resize_not_in(validate_SFixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SFixed32Rules_add_not_in(validate_SFixed32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.SFixed64Rules */
+
+UPB_INLINE validate_SFixed64Rules *validate_SFixed64Rules_new(upb_arena *arena) {
+  return (validate_SFixed64Rules *)upb_msg_new(&validate_SFixed64Rules_msginit, arena);
+}
+UPB_INLINE validate_SFixed64Rules *validate_SFixed64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SFixed64Rules *ret = validate_SFixed64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SFixed64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SFixed64Rules_serialize(const validate_SFixed64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SFixed64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SFixed64Rules_has_const(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_SFixed64Rules_const(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SFixed64Rules_has_lt(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_SFixed64Rules_lt(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SFixed64Rules_has_lte(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_SFixed64Rules_lte(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_SFixed64Rules_has_gt(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_SFixed64Rules_gt(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_SFixed64Rules_has_gte(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_SFixed64Rules_gte(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_SFixed64Rules_in(const validate_SFixed64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_SFixed64Rules_not_in(const validate_SFixed64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_SFixed64Rules_set_const(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_lt(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_lte(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_gt(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_gte(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_mutable_in(validate_SFixed64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_resize_in(validate_SFixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SFixed64Rules_add_in(validate_SFixed64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_mutable_not_in(validate_SFixed64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_resize_not_in(validate_SFixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SFixed64Rules_add_not_in(validate_SFixed64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.BoolRules */
+
+UPB_INLINE validate_BoolRules *validate_BoolRules_new(upb_arena *arena) {
+  return (validate_BoolRules *)upb_msg_new(&validate_BoolRules_msginit, arena);
+}
+UPB_INLINE validate_BoolRules *validate_BoolRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_BoolRules *ret = validate_BoolRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_BoolRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_BoolRules_serialize(const validate_BoolRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_BoolRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_BoolRules_has_const(const validate_BoolRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_BoolRules_const(const validate_BoolRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void validate_BoolRules_set_const(validate_BoolRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* validate.StringRules */
+
+UPB_INLINE validate_StringRules *validate_StringRules_new(upb_arena *arena) {
+  return (validate_StringRules *)upb_msg_new(&validate_StringRules_msginit, arena);
+}
+UPB_INLINE validate_StringRules *validate_StringRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_StringRules *ret = validate_StringRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_StringRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_StringRules_serialize(const validate_StringRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_StringRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_StringRules_well_known_email = 12,
+  validate_StringRules_well_known_hostname = 13,
+  validate_StringRules_well_known_ip = 14,
+  validate_StringRules_well_known_ipv4 = 15,
+  validate_StringRules_well_known_ipv6 = 16,
+  validate_StringRules_well_known_uri = 17,
+  validate_StringRules_well_known_uri_ref = 18,
+  validate_StringRules_well_known_address = 21,
+  validate_StringRules_well_known_uuid = 22,
+  validate_StringRules_well_known_well_known_regex = 24,
+  validate_StringRules_well_known_NOT_SET = 0
+} validate_StringRules_well_known_oneofcases;
+UPB_INLINE validate_StringRules_well_known_oneofcases validate_StringRules_well_known_case(const validate_StringRules* msg) { return (validate_StringRules_well_known_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(120, 176)); }
+
+UPB_INLINE bool validate_StringRules_has_const(const validate_StringRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview validate_StringRules_const(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 56)); }
+UPB_INLINE bool validate_StringRules_has_min_len(const validate_StringRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_StringRules_min_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_StringRules_has_max_len(const validate_StringRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_StringRules_max_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_StringRules_has_min_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_StringRules_min_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_StringRules_has_max_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_StringRules_max_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_StringRules_has_pattern(const validate_StringRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview validate_StringRules_pattern(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 72)); }
+UPB_INLINE bool validate_StringRules_has_prefix(const validate_StringRules *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE upb_strview validate_StringRules_prefix(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(72, 88)); }
+UPB_INLINE bool validate_StringRules_has_suffix(const validate_StringRules *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE upb_strview validate_StringRules_suffix(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(80, 104)); }
+UPB_INLINE bool validate_StringRules_has_contains(const validate_StringRules *msg) { return _upb_has_field(msg, 11); }
+UPB_INLINE upb_strview validate_StringRules_contains(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(88, 120)); }
+UPB_INLINE upb_strview const* validate_StringRules_in(const validate_StringRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(104, 152), len); }
+UPB_INLINE upb_strview const* validate_StringRules_not_in(const validate_StringRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(108, 160), len); }
+UPB_INLINE bool validate_StringRules_has_email(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 12); }
+UPB_INLINE bool validate_StringRules_email(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 12, false); }
+UPB_INLINE bool validate_StringRules_has_hostname(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 13); }
+UPB_INLINE bool validate_StringRules_hostname(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 13, false); }
+UPB_INLINE bool validate_StringRules_has_ip(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 14); }
+UPB_INLINE bool validate_StringRules_ip(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 14, false); }
+UPB_INLINE bool validate_StringRules_has_ipv4(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 15); }
+UPB_INLINE bool validate_StringRules_ipv4(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 15, false); }
+UPB_INLINE bool validate_StringRules_has_ipv6(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 16); }
+UPB_INLINE bool validate_StringRules_ipv6(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 16, false); }
+UPB_INLINE bool validate_StringRules_has_uri(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 17); }
+UPB_INLINE bool validate_StringRules_uri(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 17, false); }
+UPB_INLINE bool validate_StringRules_has_uri_ref(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 18); }
+UPB_INLINE bool validate_StringRules_uri_ref(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 18, false); }
+UPB_INLINE bool validate_StringRules_has_len(const validate_StringRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_StringRules_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE bool validate_StringRules_has_len_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE uint64_t validate_StringRules_len_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(48, 48)); }
+UPB_INLINE bool validate_StringRules_has_address(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 21); }
+UPB_INLINE bool validate_StringRules_address(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 21, false); }
+UPB_INLINE bool validate_StringRules_has_uuid(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 22); }
+UPB_INLINE bool validate_StringRules_uuid(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 22, false); }
+UPB_INLINE bool validate_StringRules_has_not_contains(const validate_StringRules *msg) { return _upb_has_field(msg, 12); }
+UPB_INLINE upb_strview validate_StringRules_not_contains(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(96, 136)); }
+UPB_INLINE bool validate_StringRules_has_well_known_regex(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 24); }
+UPB_INLINE int32_t validate_StringRules_well_known_regex(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 24, validate_UNKNOWN); }
+
+UPB_INLINE void validate_StringRules_set_const(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 56)) = value;
+}
+UPB_INLINE void validate_StringRules_set_min_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_StringRules_set_max_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_StringRules_set_min_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_StringRules_set_max_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_StringRules_set_pattern(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 72)) = value;
+}
+UPB_INLINE void validate_StringRules_set_prefix(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(72, 88)) = value;
+}
+UPB_INLINE void validate_StringRules_set_suffix(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(80, 104)) = value;
+}
+UPB_INLINE void validate_StringRules_set_contains(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 11);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(88, 120)) = value;
+}
+UPB_INLINE upb_strview* validate_StringRules_mutable_in(validate_StringRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(104, 152), len);
+}
+UPB_INLINE upb_strview* validate_StringRules_resize_in(validate_StringRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(104, 152), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_StringRules_add_in(validate_StringRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(104, 152), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_StringRules_mutable_not_in(validate_StringRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(108, 160), len);
+}
+UPB_INLINE upb_strview* validate_StringRules_resize_not_in(validate_StringRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(108, 160), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_StringRules_add_not_in(validate_StringRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(108, 160), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void validate_StringRules_set_email(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 12);
+}
+UPB_INLINE void validate_StringRules_set_hostname(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 13);
+}
+UPB_INLINE void validate_StringRules_set_ip(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 14);
+}
+UPB_INLINE void validate_StringRules_set_ipv4(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 15);
+}
+UPB_INLINE void validate_StringRules_set_ipv6(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 16);
+}
+UPB_INLINE void validate_StringRules_set_uri(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 17);
+}
+UPB_INLINE void validate_StringRules_set_uri_ref(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 18);
+}
+UPB_INLINE void validate_StringRules_set_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE void validate_StringRules_set_len_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(48, 48)) = value;
+}
+UPB_INLINE void validate_StringRules_set_address(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 21);
+}
+UPB_INLINE void validate_StringRules_set_uuid(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 22);
+}
+UPB_INLINE void validate_StringRules_set_not_contains(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 12);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(96, 136)) = value;
+}
+UPB_INLINE void validate_StringRules_set_well_known_regex(validate_StringRules *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 24);
+}
+
+/* validate.BytesRules */
+
+UPB_INLINE validate_BytesRules *validate_BytesRules_new(upb_arena *arena) {
+  return (validate_BytesRules *)upb_msg_new(&validate_BytesRules_msginit, arena);
+}
+UPB_INLINE validate_BytesRules *validate_BytesRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_BytesRules *ret = validate_BytesRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_BytesRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_BytesRules_serialize(const validate_BytesRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_BytesRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_BytesRules_well_known_ip = 10,
+  validate_BytesRules_well_known_ipv4 = 11,
+  validate_BytesRules_well_known_ipv6 = 12,
+  validate_BytesRules_well_known_NOT_SET = 0
+} validate_BytesRules_well_known_oneofcases;
+UPB_INLINE validate_BytesRules_well_known_oneofcases validate_BytesRules_well_known_case(const validate_BytesRules* msg) { return (validate_BytesRules_well_known_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(84, 132)); }
+
+UPB_INLINE bool validate_BytesRules_has_const(const validate_BytesRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview validate_BytesRules_const(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_BytesRules_has_min_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_BytesRules_min_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_BytesRules_has_max_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_BytesRules_max_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_BytesRules_has_pattern(const validate_BytesRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview validate_BytesRules_pattern(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool validate_BytesRules_has_prefix(const validate_BytesRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview validate_BytesRules_prefix(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+UPB_INLINE bool validate_BytesRules_has_suffix(const validate_BytesRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview validate_BytesRules_suffix(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)); }
+UPB_INLINE bool validate_BytesRules_has_contains(const validate_BytesRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview validate_BytesRules_contains(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)); }
+UPB_INLINE upb_strview const* validate_BytesRules_in(const validate_BytesRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(72, 112), len); }
+UPB_INLINE upb_strview const* validate_BytesRules_not_in(const validate_BytesRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(76, 120), len); }
+UPB_INLINE bool validate_BytesRules_has_ip(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 10); }
+UPB_INLINE bool validate_BytesRules_ip(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 10, false); }
+UPB_INLINE bool validate_BytesRules_has_ipv4(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 11); }
+UPB_INLINE bool validate_BytesRules_ipv4(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 11, false); }
+UPB_INLINE bool validate_BytesRules_has_ipv6(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 12); }
+UPB_INLINE bool validate_BytesRules_ipv6(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 12, false); }
+UPB_INLINE bool validate_BytesRules_has_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_BytesRules_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void validate_BytesRules_set_const(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_min_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_max_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_pattern(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_prefix(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_suffix(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_contains(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE upb_strview* validate_BytesRules_mutable_in(validate_BytesRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(72, 112), len);
+}
+UPB_INLINE upb_strview* validate_BytesRules_resize_in(validate_BytesRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(72, 112), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_BytesRules_add_in(validate_BytesRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(72, 112), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_BytesRules_mutable_not_in(validate_BytesRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 120), len);
+}
+UPB_INLINE upb_strview* validate_BytesRules_resize_not_in(validate_BytesRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(76, 120), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_BytesRules_add_not_in(validate_BytesRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 120), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void validate_BytesRules_set_ip(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 10);
+}
+UPB_INLINE void validate_BytesRules_set_ipv4(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 11);
+}
+UPB_INLINE void validate_BytesRules_set_ipv6(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 12);
+}
+UPB_INLINE void validate_BytesRules_set_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* validate.EnumRules */
+
+UPB_INLINE validate_EnumRules *validate_EnumRules_new(upb_arena *arena) {
+  return (validate_EnumRules *)upb_msg_new(&validate_EnumRules_msginit, arena);
+}
+UPB_INLINE validate_EnumRules *validate_EnumRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_EnumRules *ret = validate_EnumRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_EnumRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_EnumRules_serialize(const validate_EnumRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_EnumRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_EnumRules_has_const(const validate_EnumRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_EnumRules_const(const validate_EnumRules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_EnumRules_has_defined_only(const validate_EnumRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_EnumRules_defined_only(const validate_EnumRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t const* validate_EnumRules_in(const validate_EnumRules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(12, 16), len); }
+UPB_INLINE int32_t const* validate_EnumRules_not_in(const validate_EnumRules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(16, 24), len); }
+
+UPB_INLINE void validate_EnumRules_set_const(validate_EnumRules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_EnumRules_set_defined_only(validate_EnumRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE int32_t* validate_EnumRules_mutable_in(validate_EnumRules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 16), len);
+}
+UPB_INLINE int32_t* validate_EnumRules_resize_in(validate_EnumRules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(12, 16), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_EnumRules_add_in(validate_EnumRules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 16), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_EnumRules_mutable_not_in(validate_EnumRules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 24), len);
+}
+UPB_INLINE int32_t* validate_EnumRules_resize_not_in(validate_EnumRules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(16, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_EnumRules_add_not_in(validate_EnumRules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.MessageRules */
+
+UPB_INLINE validate_MessageRules *validate_MessageRules_new(upb_arena *arena) {
+  return (validate_MessageRules *)upb_msg_new(&validate_MessageRules_msginit, arena);
+}
+UPB_INLINE validate_MessageRules *validate_MessageRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_MessageRules *ret = validate_MessageRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_MessageRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_MessageRules_serialize(const validate_MessageRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_MessageRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_MessageRules_has_skip(const validate_MessageRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_MessageRules_skip(const validate_MessageRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool validate_MessageRules_has_required(const validate_MessageRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_MessageRules_required(const validate_MessageRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void validate_MessageRules_set_skip(validate_MessageRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void validate_MessageRules_set_required(validate_MessageRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* validate.RepeatedRules */
+
+UPB_INLINE validate_RepeatedRules *validate_RepeatedRules_new(upb_arena *arena) {
+  return (validate_RepeatedRules *)upb_msg_new(&validate_RepeatedRules_msginit, arena);
+}
+UPB_INLINE validate_RepeatedRules *validate_RepeatedRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_RepeatedRules *ret = validate_RepeatedRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_RepeatedRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_RepeatedRules_serialize(const validate_RepeatedRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_RepeatedRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_RepeatedRules_has_min_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_RepeatedRules_min_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_RepeatedRules_has_max_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_RepeatedRules_max_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_RepeatedRules_has_unique(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_RepeatedRules_unique(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_RepeatedRules_has_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const validate_FieldRules* validate_RepeatedRules_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(28, 32)); }
+
+UPB_INLINE void validate_RepeatedRules_set_min_items(validate_RepeatedRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_max_items(validate_RepeatedRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_unique(validate_RepeatedRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_items(validate_RepeatedRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_RepeatedRules_mutable_items(validate_RepeatedRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_RepeatedRules_items(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_RepeatedRules_set_items(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.MapRules */
+
+UPB_INLINE validate_MapRules *validate_MapRules_new(upb_arena *arena) {
+  return (validate_MapRules *)upb_msg_new(&validate_MapRules_msginit, arena);
+}
+UPB_INLINE validate_MapRules *validate_MapRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_MapRules *ret = validate_MapRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_MapRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_MapRules_serialize(const validate_MapRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_MapRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_MapRules_has_min_pairs(const validate_MapRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_MapRules_min_pairs(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_MapRules_has_max_pairs(const validate_MapRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_MapRules_max_pairs(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_MapRules_has_no_sparse(const validate_MapRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_MapRules_no_sparse(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_MapRules_has_keys(const validate_MapRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const validate_FieldRules* validate_MapRules_keys(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(28, 32)); }
+UPB_INLINE bool validate_MapRules_has_values(const validate_MapRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const validate_FieldRules* validate_MapRules_values(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(32, 40)); }
+
+UPB_INLINE void validate_MapRules_set_min_pairs(validate_MapRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_MapRules_set_max_pairs(validate_MapRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_MapRules_set_no_sparse(validate_MapRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_MapRules_set_keys(validate_MapRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_MapRules_mutable_keys(validate_MapRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_MapRules_keys(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_MapRules_set_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_MapRules_set_values(validate_MapRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(32, 40)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_MapRules_mutable_values(validate_MapRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_MapRules_values(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_MapRules_set_values(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.AnyRules */
+
+UPB_INLINE validate_AnyRules *validate_AnyRules_new(upb_arena *arena) {
+  return (validate_AnyRules *)upb_msg_new(&validate_AnyRules_msginit, arena);
+}
+UPB_INLINE validate_AnyRules *validate_AnyRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_AnyRules *ret = validate_AnyRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_AnyRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_AnyRules_serialize(const validate_AnyRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_AnyRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_AnyRules_has_required(const validate_AnyRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_AnyRules_required(const validate_AnyRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE upb_strview const* validate_AnyRules_in(const validate_AnyRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE upb_strview const* validate_AnyRules_not_in(const validate_AnyRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void validate_AnyRules_set_required(validate_AnyRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE upb_strview* validate_AnyRules_mutable_in(validate_AnyRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE upb_strview* validate_AnyRules_resize_in(validate_AnyRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_AnyRules_add_in(validate_AnyRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_AnyRules_mutable_not_in(validate_AnyRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* validate_AnyRules_resize_not_in(validate_AnyRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_AnyRules_add_not_in(validate_AnyRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* validate.DurationRules */
+
+UPB_INLINE validate_DurationRules *validate_DurationRules_new(upb_arena *arena) {
+  return (validate_DurationRules *)upb_msg_new(&validate_DurationRules_msginit, arena);
+}
+UPB_INLINE validate_DurationRules *validate_DurationRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_DurationRules *ret = validate_DurationRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_DurationRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_DurationRules_serialize(const validate_DurationRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_DurationRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_DurationRules_has_required(const validate_DurationRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_DurationRules_required(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool validate_DurationRules_has_const(const validate_DurationRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_const(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool validate_DurationRules_has_lt(const validate_DurationRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_lt(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool validate_DurationRules_has_lte(const validate_DurationRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_lte(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool validate_DurationRules_has_gt(const validate_DurationRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_gt(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool validate_DurationRules_has_gte(const validate_DurationRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_gte(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_Duration* const* validate_DurationRules_in(const validate_DurationRules *msg, size_t *len) { return (const struct google_protobuf_Duration* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const struct google_protobuf_Duration* const* validate_DurationRules_not_in(const validate_DurationRules *msg, size_t *len) { return (const struct google_protobuf_Duration* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE void validate_DurationRules_set_required(validate_DurationRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void validate_DurationRules_set_const(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_const(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_const(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_const(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_lt(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_lt(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_lt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_lt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_lte(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_lte(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_lte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_lte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_gt(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_gt(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_gt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_gt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_gte(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_gte(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_gte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_gte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_mutable_in(validate_DurationRules *msg, size_t *len) {
+  return (struct google_protobuf_Duration**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_resize_in(validate_DurationRules *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Duration**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_add_in(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_mutable_not_in(validate_DurationRules *msg, size_t *len) {
+  return (struct google_protobuf_Duration**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_resize_not_in(validate_DurationRules *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Duration**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_add_not_in(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* validate.TimestampRules */
+
+UPB_INLINE validate_TimestampRules *validate_TimestampRules_new(upb_arena *arena) {
+  return (validate_TimestampRules *)upb_msg_new(&validate_TimestampRules_msginit, arena);
+}
+UPB_INLINE validate_TimestampRules *validate_TimestampRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_TimestampRules *ret = validate_TimestampRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_TimestampRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_TimestampRules_serialize(const validate_TimestampRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_TimestampRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_TimestampRules_has_required(const validate_TimestampRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_TimestampRules_required(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool validate_TimestampRules_has_const(const validate_TimestampRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_const(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_TimestampRules_has_lt(const validate_TimestampRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_lt(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(12, 16)); }
+UPB_INLINE bool validate_TimestampRules_has_lte(const validate_TimestampRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_lte(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(16, 24)); }
+UPB_INLINE bool validate_TimestampRules_has_gt(const validate_TimestampRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_gt(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(20, 32)); }
+UPB_INLINE bool validate_TimestampRules_has_gte(const validate_TimestampRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_gte(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool validate_TimestampRules_has_lt_now(const validate_TimestampRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_TimestampRules_lt_now(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+UPB_INLINE bool validate_TimestampRules_has_gt_now(const validate_TimestampRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_TimestampRules_gt_now(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_TimestampRules_has_within(const validate_TimestampRules *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE const struct google_protobuf_Duration* validate_TimestampRules_within(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(28, 48)); }
+
+UPB_INLINE void validate_TimestampRules_set_required(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_const(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_const(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_const(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_const(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lt(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_lt(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_lt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_lt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lte(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_lte(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_lte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_lte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_gt(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_gt(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_gt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_gt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_gte(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_gte(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_gte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_gte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lt_now(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_gt_now(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_within(validate_TimestampRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_TimestampRules_mutable_within(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_TimestampRules_within(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_within(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* VALIDATE_VALIDATE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/avl/avl.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/avl/avl.h
new file mode 100644
index 0000000..15a9d56
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/avl/avl.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_AVL_AVL_H
+#define GRPC_CORE_LIB_AVL_AVL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+/** internal node of an AVL tree */
+typedef struct grpc_avl_node {
+  gpr_refcount refs;
+  void* key;
+  void* value;
+  struct grpc_avl_node* left;
+  struct grpc_avl_node* right;
+  long height;
+} grpc_avl_node;
+
+/** vtable for the AVL tree
+ * The optional user_data is propagated from the top level grpc_avl_XXX API.
+ * From the same API call, multiple vtable functions may be called multiple
+ * times.
+ */
+typedef struct grpc_avl_vtable {
+  /** destroy a key */
+  void (*destroy_key)(void* key, void* user_data);
+  /** copy a key, returning new value */
+  void* (*copy_key)(void* key, void* user_data);
+  /** compare key1, key2; return <0 if key1 < key2,
+      >0 if key1 > key2, 0 if key1 == key2 */
+  long (*compare_keys)(void* key1, void* key2, void* user_data);
+  /** destroy a value */
+  void (*destroy_value)(void* value, void* user_data);
+  /** copy a value */
+  void* (*copy_value)(void* value, void* user_data);
+} grpc_avl_vtable;
+
+/** "pointer" to an AVL tree - this is a reference
+    counted object - use grpc_avl_ref to add a reference,
+    grpc_avl_unref when done with a reference */
+typedef struct grpc_avl {
+  const grpc_avl_vtable* vtable;
+  grpc_avl_node* root;
+} grpc_avl;
+
+/** Create an immutable AVL tree. */
+grpc_avl grpc_avl_create(const grpc_avl_vtable* vtable);
+/** Add a reference to an existing tree - returns
+    the tree as a convenience. The optional user_data will be passed to vtable
+    functions. */
+grpc_avl grpc_avl_ref(grpc_avl avl, void* user_data);
+/** Remove a reference to a tree - destroying it if there
+    are no references left. The optional user_data will be passed to vtable
+    functions. */
+void grpc_avl_unref(grpc_avl avl, void* user_data);
+/** Return a new tree with (key, value) added to avl.
+    implicitly unrefs avl to allow easy chaining.
+    if key exists in avl, the new tree's key entry updated
+    (i.e. a duplicate is not created). The optional user_data will be passed to
+    vtable functions. */
+grpc_avl grpc_avl_add(grpc_avl avl, void* key, void* value, void* user_data);
+/** Return a new tree with key deleted
+    implicitly unrefs avl to allow easy chaining. The optional user_data will be
+    passed to vtable functions. */
+grpc_avl grpc_avl_remove(grpc_avl avl, void* key, void* user_data);
+/** Lookup key, and return the associated value.
+    Does not mutate avl.
+    Returns NULL if key is not found. The optional user_data will be passed to
+    vtable functions.*/
+void* grpc_avl_get(grpc_avl avl, void* key, void* user_data);
+/** Return 1 if avl contains key, 0 otherwise; if it has the key, sets *value to
+    its value. The optional user_data will be passed to vtable functions. */
+int grpc_avl_maybe_get(grpc_avl avl, void* key, void** value, void* user_data);
+/** Return 1 if avl is empty, 0 otherwise */
+int grpc_avl_is_empty(grpc_avl avl);
+
+#endif /* GRPC_CORE_LIB_AVL_AVL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/backoff/backoff.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/backoff/backoff.h
new file mode 100644
index 0000000..e769d15
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/backoff/backoff.h	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_BACKOFF_BACKOFF_H
+#define GRPC_CORE_LIB_BACKOFF_BACKOFF_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+/// Implementation of the backoff mechanism described in
+/// doc/connection-backoff.md
+class BackOff {
+ public:
+  class Options;
+
+  /// Initialize backoff machinery - does not need to be destroyed
+  explicit BackOff(const Options& options);
+
+  /// Returns the time at which the next attempt should start.
+  grpc_millis NextAttemptTime();
+
+  /// Reset the backoff, so the next value returned by NextAttemptTime()
+  /// will be the time of the second attempt (rather than the Nth).
+  void Reset();
+
+  void SetRandomSeed(unsigned int seed);
+
+  class Options {
+   public:
+    Options& set_initial_backoff(grpc_millis initial_backoff) {
+      initial_backoff_ = initial_backoff;
+      return *this;
+    }
+    Options& set_multiplier(double multiplier) {
+      multiplier_ = multiplier;
+      return *this;
+    }
+    Options& set_jitter(double jitter) {
+      jitter_ = jitter;
+      return *this;
+    }
+    Options& set_max_backoff(grpc_millis max_backoff) {
+      max_backoff_ = max_backoff;
+      return *this;
+    }
+    /// how long to wait after the first failure before retrying
+    grpc_millis initial_backoff() const { return initial_backoff_; }
+    /// factor with which to multiply backoff after a failed retry
+    double multiplier() const { return multiplier_; }
+    /// amount to randomize backoffs
+    double jitter() const { return jitter_; }
+    /// maximum time between retries
+    grpc_millis max_backoff() const { return max_backoff_; }
+
+   private:
+    grpc_millis initial_backoff_;
+    double multiplier_;
+    double jitter_;
+    grpc_millis max_backoff_;
+  };  // class Options
+
+ private:
+  const Options options_;
+  uint32_t rng_state_;
+  bool initial_;
+  /// current delay before retries
+  grpc_millis current_backoff_;
+};
+
+}  // namespace grpc_core
+#endif /* GRPC_CORE_LIB_BACKOFF_BACKOFF_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_args.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_args.h
new file mode 100644
index 0000000..df105fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_args.h	
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/surface/channel_stack_type.h"
+
+// Channel args are intentionally immutable, to avoid the need for locking.
+
+/** Copy the arguments in \a src into a new instance */
+grpc_channel_args* grpc_channel_args_copy(const grpc_channel_args* src);
+
+/** Copy the arguments in \a src into a new instance, stably sorting keys */
+grpc_channel_args* grpc_channel_args_normalize(const grpc_channel_args* src);
+
+/** Copy the arguments in \a src and append \a to_add. If \a to_add is NULL, it
+ * is equivalent to calling \a grpc_channel_args_copy. */
+grpc_channel_args* grpc_channel_args_copy_and_add(const grpc_channel_args* src,
+                                                  const grpc_arg* to_add,
+                                                  size_t num_to_add);
+
+/** Copies the arguments in \a src except for those whose keys are in
+    \a to_remove. */
+grpc_channel_args* grpc_channel_args_copy_and_remove(
+    const grpc_channel_args* src, const char** to_remove, size_t num_to_remove);
+
+/** Copies the arguments from \a src except for those whose keys are in
+    \a to_remove and appends the arguments in \a to_add. */
+grpc_channel_args* grpc_channel_args_copy_and_add_and_remove(
+    const grpc_channel_args* src, const char** to_remove, size_t num_to_remove,
+    const grpc_arg* to_add, size_t num_to_add);
+
+/** Perform the union of \a a and \a b, prioritizing \a a entries */
+grpc_channel_args* grpc_channel_args_union(const grpc_channel_args* a,
+                                           const grpc_channel_args* b);
+
+/** Destroy arguments created by \a grpc_channel_args_copy */
+void grpc_channel_args_destroy(grpc_channel_args* a);
+inline void grpc_channel_args_destroy(const grpc_channel_args* a) {
+  grpc_channel_args_destroy(const_cast<grpc_channel_args*>(a));
+}
+
+int grpc_channel_args_compare(const grpc_channel_args* a,
+                              const grpc_channel_args* b);
+
+/** Returns the value of argument \a name from \a args, or NULL if not found. */
+const grpc_arg* grpc_channel_args_find(const grpc_channel_args* args,
+                                       const char* name);
+
+bool grpc_channel_args_want_minimal_stack(const grpc_channel_args* args);
+
+typedef struct grpc_integer_options {
+  int default_value;  // Return this if value is outside of expected bounds.
+  int min_value;
+  int max_value;
+} grpc_integer_options;
+
+/** Returns the value of \a arg, subject to the constraints in \a options. */
+int grpc_channel_arg_get_integer(const grpc_arg* arg,
+                                 const grpc_integer_options options);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+int grpc_channel_args_find_integer(const grpc_channel_args* args,
+                                   const char* name,
+                                   const grpc_integer_options options);
+
+/** Returns the value of \a arg if \a arg is of type GRPC_ARG_STRING.
+    Otherwise, emits a warning log, and returns nullptr.
+    If arg is nullptr, returns nullptr, and does not emit a warning. */
+char* grpc_channel_arg_get_string(const grpc_arg* arg);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+char* grpc_channel_args_find_string(const grpc_channel_args* args,
+                                    const char* name);
+/** If \a arg is of type GRPC_ARG_INTEGER, returns true if it's non-zero.
+ * Returns \a default_value if \a arg is of other types. */
+bool grpc_channel_arg_get_bool(const grpc_arg* arg, bool default_value);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+bool grpc_channel_args_find_bool(const grpc_channel_args* args,
+                                 const char* name, bool default_value);
+
+template <typename T>
+T* grpc_channel_args_find_pointer(const grpc_channel_args* args,
+                                  const char* name) {
+  const grpc_arg* arg = grpc_channel_args_find(args, name);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return nullptr;
+  return static_cast<T*>(arg->value.pointer.p);
+}
+
+// Helpers for creating channel args.
+grpc_arg grpc_channel_arg_string_create(char* name, char* value);
+grpc_arg grpc_channel_arg_integer_create(char* name, int value);
+grpc_arg grpc_channel_arg_pointer_create(char* name, void* value,
+                                         const grpc_arg_pointer_vtable* vtable);
+
+// Returns a string representing channel args in human-readable form.
+// Callers takes ownership of result.
+char* grpc_channel_args_string(const grpc_channel_args* args);
+
+// Takes ownership of the old_args
+typedef grpc_channel_args* (*grpc_channel_args_client_channel_creation_mutator)(
+    const char* target, grpc_channel_args* old_args,
+    grpc_channel_stack_type type);
+
+// Should be called only once globaly before grpc is init'ed.
+void grpc_channel_args_set_client_channel_creation_mutator(
+    grpc_channel_args_client_channel_creation_mutator cb);
+// This will be called at the creation of each channel.
+grpc_channel_args_client_channel_creation_mutator
+grpc_channel_args_get_client_channel_creation_mutator();
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack.h
new file mode 100644
index 0000000..f927287
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack.h	
@@ -0,0 +1,297 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
+
+//////////////////////////////////////////////////////////////////////////////
+// IMPORTANT NOTE:
+//
+// When you update this API, please make the corresponding changes to
+// the C++ API in src/cpp/common/channel_filter.{h,cc}
+//////////////////////////////////////////////////////////////////////////////
+
+/* A channel filter defines how operations on a channel are implemented.
+   Channel filters are chained together to create full channels, and if those
+   chains are linear, then channel stacks provide a mechanism to minimize
+   allocations for that chain.
+   Call stacks are created by channel stacks and represent the per-call data
+   for that stack. */
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct grpc_channel_element grpc_channel_element;
+typedef struct grpc_call_element grpc_call_element;
+
+typedef struct grpc_channel_stack grpc_channel_stack;
+typedef struct grpc_call_stack grpc_call_stack;
+
+typedef struct {
+  grpc_channel_stack* channel_stack;
+  const grpc_channel_args* channel_args;
+  /** Transport, iff it is known */
+  grpc_transport* optional_transport;
+  int is_first;
+  int is_last;
+} grpc_channel_element_args;
+
+typedef struct {
+  grpc_call_stack* call_stack;
+  const void* server_transport_data;
+  grpc_call_context_element* context;
+  const grpc_slice& path;
+  gpr_cycle_counter start_time;
+  grpc_millis deadline;
+  grpc_core::Arena* arena;
+  grpc_core::CallCombiner* call_combiner;
+} grpc_call_element_args;
+
+typedef struct {
+  grpc_transport_stream_stats transport_stream_stats;
+  gpr_timespec latency; /* From call creating to enqueing of received status */
+} grpc_call_stats;
+
+/** Information about the call upon completion. */
+struct grpc_call_final_info {
+  grpc_call_stats stats;
+  grpc_status_code final_status = GRPC_STATUS_OK;
+  const char* error_string = nullptr;
+};
+
+/* Channel filters specify:
+   1. the amount of memory needed in the channel & call (via the sizeof_XXX
+      members)
+   2. functions to initialize and destroy channel & call data
+      (init_XXX, destroy_XXX)
+   3. functions to implement call operations and channel operations (call_op,
+      channel_op)
+   4. a name, which is useful when debugging
+
+   Members are laid out in approximate frequency of use order. */
+typedef struct {
+  /* Called to eg. send/receive data on a call.
+     See grpc_call_next_op on how to call the next element in the stack */
+  void (*start_transport_stream_op_batch)(grpc_call_element* elem,
+                                          grpc_transport_stream_op_batch* op);
+  /* Called to handle channel level operations - e.g. new calls, or transport
+     closure.
+     See grpc_channel_next_op on how to call the next element in the stack */
+  void (*start_transport_op)(grpc_channel_element* elem, grpc_transport_op* op);
+
+  /* sizeof(per call data) */
+  size_t sizeof_call_data;
+  /* Initialize per call data.
+     elem is initialized at the start of the call, and elem->call_data is what
+     needs initializing.
+     The filter does not need to do any chaining.
+     server_transport_data is an opaque pointer. If it is NULL, this call is
+     on a client; if it is non-NULL, then it points to memory owned by the
+     transport and is on the server. Most filters want to ignore this
+     argument.
+     Implementations may assume that elem->call_data is all zeros. */
+  grpc_error* (*init_call_elem)(grpc_call_element* elem,
+                                const grpc_call_element_args* args);
+  void (*set_pollset_or_pollset_set)(grpc_call_element* elem,
+                                     grpc_polling_entity* pollent);
+  /* Destroy per call data.
+     The filter does not need to do any chaining.
+     The bottom filter of a stack will be passed a non-NULL pointer to
+     \a then_schedule_closure that should be passed to GRPC_CLOSURE_SCHED when
+     destruction is complete. \a final_info contains data about the completed
+     call, mainly for reporting purposes. */
+  void (*destroy_call_elem)(grpc_call_element* elem,
+                            const grpc_call_final_info* final_info,
+                            grpc_closure* then_schedule_closure);
+
+  /* sizeof(per channel data) */
+  size_t sizeof_channel_data;
+  /* Initialize per-channel data.
+     elem is initialized at the creating of the channel, and elem->channel_data
+     is what needs initializing.
+     is_first, is_last designate this elements position in the stack, and are
+     useful for asserting correct configuration by upper layer code.
+     The filter does not need to do any chaining.
+     Implementations may assume that elem->channel_data is all zeros. */
+  grpc_error* (*init_channel_elem)(grpc_channel_element* elem,
+                                   grpc_channel_element_args* args);
+  /* Destroy per channel data.
+     The filter does not need to do any chaining */
+  void (*destroy_channel_elem)(grpc_channel_element* elem);
+
+  /* Implement grpc_channel_get_info() */
+  void (*get_channel_info)(grpc_channel_element* elem,
+                           const grpc_channel_info* channel_info);
+
+  /* The name of this filter */
+  const char* name;
+} grpc_channel_filter;
+
+/* A channel_element tracks its filter and the filter requested memory within
+   a channel allocation */
+struct grpc_channel_element {
+  const grpc_channel_filter* filter;
+  void* channel_data;
+};
+
+/* A call_element tracks its filter, the filter requested memory within
+   a channel allocation, and the filter requested memory within a call
+   allocation */
+struct grpc_call_element {
+  const grpc_channel_filter* filter;
+  void* channel_data;
+  void* call_data;
+};
+
+/* A channel stack tracks a set of related filters for one channel, and
+   guarantees they live within a single malloc() allocation */
+struct grpc_channel_stack {
+  grpc_stream_refcount refcount;
+  size_t count;
+  /* Memory required for a call stack (computed at channel stack
+     initialization) */
+  size_t call_stack_size;
+};
+
+/* A call stack tracks a set of related filters for one call, and guarantees
+   they live within a single malloc() allocation */
+struct grpc_call_stack {
+  /* shared refcount for this channel stack.
+     MUST be the first element: the underlying code calls destroy
+     with the address of the refcount, but higher layers prefer to think
+     about the address of the call stack itself. */
+  grpc_stream_refcount refcount;
+  size_t count;
+};
+
+/* Get a channel element given a channel stack and its index */
+grpc_channel_element* grpc_channel_stack_element(grpc_channel_stack* stack,
+                                                 size_t i);
+/* Get the last channel element in a channel stack */
+grpc_channel_element* grpc_channel_stack_last_element(
+    grpc_channel_stack* stack);
+/* Get a call stack element given a call stack and an index */
+grpc_call_element* grpc_call_stack_element(grpc_call_stack* stack, size_t i);
+
+/* Determine memory required for a channel stack containing a set of filters */
+size_t grpc_channel_stack_size(const grpc_channel_filter** filters,
+                               size_t filter_count);
+/* Initialize a channel stack given some filters */
+grpc_error* grpc_channel_stack_init(
+    int initial_refs, grpc_iomgr_cb_func destroy, void* destroy_arg,
+    const grpc_channel_filter** filters, size_t filter_count,
+    const grpc_channel_args* args, grpc_transport* optional_transport,
+    const char* name, grpc_channel_stack* stack);
+/* Destroy a channel stack */
+void grpc_channel_stack_destroy(grpc_channel_stack* stack);
+
+/* Initialize a call stack given a channel stack. transport_server_data is
+   expected to be NULL on a client, or an opaque transport owned pointer on the
+   server. */
+grpc_error* grpc_call_stack_init(grpc_channel_stack* channel_stack,
+                                 int initial_refs, grpc_iomgr_cb_func destroy,
+                                 void* destroy_arg,
+                                 const grpc_call_element_args* elem_args);
+/* Set a pollset or a pollset_set for a call stack: must occur before the first
+ * op is started */
+void grpc_call_stack_set_pollset_or_pollset_set(grpc_call_stack* call_stack,
+                                                grpc_polling_entity* pollent);
+
+#ifndef NDEBUG
+#define GRPC_CALL_STACK_REF(call_stack, reason) \
+  grpc_stream_ref(&(call_stack)->refcount, reason)
+#define GRPC_CALL_STACK_UNREF(call_stack, reason) \
+  grpc_stream_unref(&(call_stack)->refcount, reason)
+#define GRPC_CHANNEL_STACK_REF(channel_stack, reason) \
+  grpc_stream_ref(&(channel_stack)->refcount, reason)
+#define GRPC_CHANNEL_STACK_UNREF(channel_stack, reason) \
+  grpc_stream_unref(&(channel_stack)->refcount, reason)
+#else
+#define GRPC_CALL_STACK_REF(call_stack, reason) \
+  do {                                          \
+    grpc_stream_ref(&(call_stack)->refcount);   \
+    (void)(reason);                             \
+  } while (0);
+#define GRPC_CALL_STACK_UNREF(call_stack, reason) \
+  do {                                            \
+    grpc_stream_unref(&(call_stack)->refcount);   \
+    (void)(reason);                               \
+  } while (0);
+#define GRPC_CHANNEL_STACK_REF(channel_stack, reason) \
+  do {                                                \
+    grpc_stream_ref(&(channel_stack)->refcount);      \
+    (void)(reason);                                   \
+  } while (0);
+#define GRPC_CHANNEL_STACK_UNREF(channel_stack, reason) \
+  do {                                                  \
+    grpc_stream_unref(&(channel_stack)->refcount);      \
+    (void)(reason);                                     \
+  } while (0);
+#endif
+
+/* Destroy a call stack */
+void grpc_call_stack_destroy(grpc_call_stack* stack,
+                             const grpc_call_final_info* final_info,
+                             grpc_closure* then_schedule_closure);
+
+/* Ignore set pollset{_set} - used by filters if they don't care about pollsets
+ * at all. Does nothing. */
+void grpc_call_stack_ignore_set_pollset_or_pollset_set(
+    grpc_call_element* elem, grpc_polling_entity* pollent);
+/* Call the next operation in a call stack */
+void grpc_call_next_op(grpc_call_element* elem,
+                       grpc_transport_stream_op_batch* op);
+/* Call the next operation (depending on call directionality) in a channel
+   stack */
+void grpc_channel_next_op(grpc_channel_element* elem, grpc_transport_op* op);
+/* Pass through a request to get_channel_info() to the next child element */
+void grpc_channel_next_get_info(grpc_channel_element* elem,
+                                const grpc_channel_info* channel_info);
+
+/* Given the top element of a channel stack, get the channel stack itself */
+grpc_channel_stack* grpc_channel_stack_from_top_element(
+    grpc_channel_element* elem);
+/* Given the top element of a call stack, get the call stack itself */
+grpc_call_stack* grpc_call_stack_from_top_element(grpc_call_element* elem);
+
+void grpc_call_log_op(const char* file, int line, gpr_log_severity severity,
+                      grpc_call_element* elem,
+                      grpc_transport_stream_op_batch* op);
+
+extern grpc_core::TraceFlag grpc_trace_channel;
+
+#define GRPC_CALL_LOG_OP(sev, elem, op)                \
+  do {                                                 \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_channel)) { \
+      grpc_call_log_op(sev, elem, op);                 \
+    }                                                  \
+  } while (0)
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack_builder.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack_builder.h
new file mode 100644
index 0000000..89c30e0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_stack_builder.h	
@@ -0,0 +1,166 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+/// grpc_channel_stack_builder offers a programmatic interface to selected
+/// and order channel filters
+typedef struct grpc_channel_stack_builder grpc_channel_stack_builder;
+typedef struct grpc_channel_stack_builder_iterator
+    grpc_channel_stack_builder_iterator;
+
+/// Create a new channel stack builder
+grpc_channel_stack_builder* grpc_channel_stack_builder_create(void);
+
+/// Assign a name to the channel stack: \a name must be statically allocated
+void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder* builder,
+                                         const char* name);
+
+/// Set the target uri
+void grpc_channel_stack_builder_set_target(grpc_channel_stack_builder* b,
+                                           const char* target);
+
+const char* grpc_channel_stack_builder_get_target(
+    grpc_channel_stack_builder* b);
+
+/// Attach \a transport to the builder (does not take ownership)
+void grpc_channel_stack_builder_set_transport(
+    grpc_channel_stack_builder* builder, grpc_transport* transport);
+
+/// Fetch attached transport
+grpc_transport* grpc_channel_stack_builder_get_transport(
+    grpc_channel_stack_builder* builder);
+
+/// Attach \a resource_user to the builder (does not take ownership)
+void grpc_channel_stack_builder_set_resource_user(
+    grpc_channel_stack_builder* builder, grpc_resource_user* resource_user);
+
+/// Fetch attached resource user
+grpc_resource_user* grpc_channel_stack_builder_get_resource_user(
+    grpc_channel_stack_builder* builder);
+
+/// Set channel arguments: copies args
+void grpc_channel_stack_builder_set_channel_arguments(
+    grpc_channel_stack_builder* builder, const grpc_channel_args* args);
+
+/// Return a borrowed pointer to the channel arguments
+const grpc_channel_args* grpc_channel_stack_builder_get_channel_arguments(
+    grpc_channel_stack_builder* builder);
+
+/// Begin iterating over already defined filters in the builder at the beginning
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_first(
+    grpc_channel_stack_builder* builder);
+
+/// Begin iterating over already defined filters in the builder at the end
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_last(
+    grpc_channel_stack_builder* builder);
+
+/// Is an iterator at the first element?
+bool grpc_channel_stack_builder_iterator_is_first(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Is an iterator at the end?
+bool grpc_channel_stack_builder_iterator_is_end(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// What is the name of the filter at this iterator position?
+const char* grpc_channel_stack_builder_iterator_filter_name(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Move an iterator to the next item
+bool grpc_channel_stack_builder_move_next(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Move an iterator to the previous item
+bool grpc_channel_stack_builder_move_prev(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Return an iterator at \a filter_name, or at the end of the list if not
+/// found.
+grpc_channel_stack_builder_iterator* grpc_channel_stack_builder_iterator_find(
+    grpc_channel_stack_builder* builder, const char* filter_name);
+
+typedef void (*grpc_post_filter_create_init_func)(
+    grpc_channel_stack* channel_stack, grpc_channel_element* elem, void* arg);
+
+/// Add \a filter to the stack, after \a iterator.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_add_filter_after(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the stack, before \a iterator.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_add_filter_before(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the beginning of the filter list.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_prepend_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the end of the filter list.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_append_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Remove any filter whose name is \a filter_name from \a builder. Returns true
+/// if \a filter_name was not found.
+bool grpc_channel_stack_builder_remove_filter(
+    grpc_channel_stack_builder* builder, const char* filter_name);
+
+/// Terminate iteration and destroy \a iterator
+void grpc_channel_stack_builder_iterator_destroy(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Destroy the builder, return the freshly minted channel stack in \a result.
+/// Allocates \a prefix_bytes bytes before the channel stack
+/// Returns the base pointer of the allocated block
+/// \a initial_refs, \a destroy, \a destroy_arg are as per
+/// grpc_channel_stack_init
+grpc_error* grpc_channel_stack_builder_finish(
+    grpc_channel_stack_builder* builder, size_t prefix_bytes, int initial_refs,
+    grpc_iomgr_cb_func destroy, void* destroy_arg, void** result);
+
+/// Destroy the builder without creating a channel stack
+void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder* builder);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_trace.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_trace.h
new file mode 100644
index 0000000..c26e301
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channel_trace.h	
@@ -0,0 +1,134 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+namespace grpc_core {
+namespace channelz {
+
+namespace testing {
+size_t GetSizeofTraceEvent(void);
+}
+
+class BaseNode;
+
+// Object used to hold live data for a channel. This data is exposed via the
+// channelz service:
+// https://github.com/grpc/proposal/blob/master/A14-channelz.md
+class ChannelTrace {
+ public:
+  ChannelTrace(size_t max_event_memory);
+  ~ChannelTrace();
+
+  enum Severity {
+    Unset = 0,  // never to be used
+    Info,       // we start at 1 to avoid using proto default values
+    Warning,
+    Error
+  };
+
+  // Adds a new trace event to the tracing object
+  //
+  // NOTE: each ChannelTrace tracks the memory used by its list of trace
+  // events, so adding an event with a large amount of data could cause other
+  // trace event to be evicted. If a single trace is larger than the limit, it
+  // will cause all events to be evicted. The limit is set with the arg:
+  // GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE.
+  //
+  // TODO(ncteisen): as this call is used more and more throughout the gRPC
+  // stack, determine if it makes more sense to accept a char* instead of a
+  // slice.
+  void AddTraceEvent(Severity severity, const grpc_slice& data);
+
+  // Adds a new trace event to the tracing object. This trace event refers to a
+  // an event that concerns a different channelz entity. For example, if this
+  // channel has created a new subchannel, then it would record that with
+  // a TraceEvent referencing the new subchannel.
+  //
+  // NOTE: see the note in the method above.
+  //
+  // TODO(ncteisen): see the todo in the method above.
+  void AddTraceEventWithReference(Severity severity, const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_entity);
+
+  // Creates and returns the raw Json object, so a parent channelz
+  // object may incorporate the json before rendering.
+  Json RenderJson() const;
+
+ private:
+  friend size_t testing::GetSizeofTraceEvent(void);
+
+  // Private class to encapsulate all the data and bookkeeping needed for a
+  // a trace event.
+  class TraceEvent {
+   public:
+    // Constructor for a TraceEvent that references a channel.
+    TraceEvent(Severity severity, const grpc_slice& data,
+               RefCountedPtr<BaseNode> referenced_entity_);
+
+    // Constructor for a TraceEvent that does not reverence a different
+    // channel.
+    TraceEvent(Severity severity, const grpc_slice& data);
+
+    ~TraceEvent();
+
+    // Renders the data inside of this TraceEvent into a json object. This is
+    // used by the ChannelTrace, when it is rendering itself.
+    Json RenderTraceEvent() const;
+
+    // set and get for the next_ pointer.
+    TraceEvent* next() const { return next_; }
+    void set_next(TraceEvent* next) { next_ = next; }
+
+    size_t memory_usage() const { return memory_usage_; }
+
+   private:
+    Severity severity_;
+    grpc_slice data_;
+    gpr_timespec timestamp_;
+    TraceEvent* next_;
+    // the tracer object for the (sub)channel that this trace event refers to.
+    RefCountedPtr<BaseNode> referenced_entity_;
+    size_t memory_usage_;
+  };  // TraceEvent
+
+  // Internal helper to add and link in a trace event
+  void AddTraceEventHelper(TraceEvent* new_trace_event);
+
+  gpr_mu tracer_mu_;
+  uint64_t num_events_logged_;
+  size_t event_list_memory_usage_;
+  size_t max_event_memory_;
+  TraceEvent* head_trace_;
+  TraceEvent* tail_trace_;
+  gpr_timespec time_created_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz.h
new file mode 100644
index 0000000..73a9b57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz.h	
@@ -0,0 +1,333 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNELZ_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNELZ_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/json/json.h"
+
+// Channel arg key for channelz node.
+#define GRPC_ARG_CHANNELZ_CHANNEL_NODE "grpc.channelz_channel_node"
+
+// Channel arg key to encode the channelz uuid of the channel's parent.
+#define GRPC_ARG_CHANNELZ_PARENT_UUID "grpc.channelz_parent_uuid"
+
+/** This is the default value for whether or not to enable channelz. If
+ * GRPC_ARG_ENABLE_CHANNELZ is set, it will override this default value. */
+#define GRPC_ENABLE_CHANNELZ_DEFAULT true
+
+/** This is the default value for the maximum amount of memory used by trace
+ * events per channel trace node. If
+ * GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE is set, it will override
+ * this default value. */
+#define GRPC_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE_DEFAULT 1024 * 4
+
+namespace grpc_core {
+
+namespace channelz {
+
+// Helpers for getting and setting GRPC_ARG_CHANNELZ_PARENT_UUID.
+grpc_arg MakeParentUuidArg(intptr_t parent_uuid);
+intptr_t GetParentUuidFromArgs(const grpc_channel_args& args);
+
+class SocketNode;
+class ListenSocketNode;
+
+namespace testing {
+class CallCountingHelperPeer;
+class ChannelNodePeer;
+}  // namespace testing
+
+// base class for all channelz entities
+class BaseNode : public RefCounted<BaseNode> {
+ public:
+  // There are only four high level channelz entities. However, to support
+  // GetTopChannelsRequest, we split the Channel entity into two different
+  // types. All children of BaseNode must be one of these types.
+  enum class EntityType {
+    kTopLevelChannel,
+    kInternalChannel,
+    kSubchannel,
+    kServer,
+    kSocket,
+  };
+
+ protected:
+  BaseNode(EntityType type, std::string name);
+
+ public:
+  virtual ~BaseNode();
+
+  // All children must implement this function.
+  virtual Json RenderJson() = 0;
+
+  // Renders the json and returns allocated string that must be freed by the
+  // caller.
+  std::string RenderJsonString();
+
+  EntityType type() const { return type_; }
+  intptr_t uuid() const { return uuid_; }
+  const std::string& name() const { return name_; }
+
+ private:
+  // to allow the ChannelzRegistry to set uuid_ under its lock.
+  friend class ChannelzRegistry;
+  const EntityType type_;
+  intptr_t uuid_;
+  std::string name_;
+};
+
+// This class is a helper class for channelz entities that deal with Channels,
+// Subchannels, and Servers, since those have similar proto definitions.
+// This class has the ability to:
+//   - track calls_{started,succeeded,failed}
+//   - track last_call_started_timestamp
+//   - perform rendering of the above items
+class CallCountingHelper {
+ public:
+  CallCountingHelper();
+
+  void RecordCallStarted();
+  void RecordCallFailed();
+  void RecordCallSucceeded();
+
+  // Common rendering of the call count data and last_call_started_timestamp.
+  void PopulateCallCounts(Json::Object* json);
+
+ private:
+  // testing peer friend.
+  friend class testing::CallCountingHelperPeer;
+
+  // TODO(soheil): add a proper PerCPU helper and use it here.
+  struct AtomicCounterData {
+    // Define the ctors so that we can use this structure in InlinedVector.
+    AtomicCounterData() = default;
+    AtomicCounterData(const AtomicCounterData& that)
+        : calls_started(that.calls_started.Load(MemoryOrder::RELAXED)),
+          calls_succeeded(that.calls_succeeded.Load(MemoryOrder::RELAXED)),
+          calls_failed(that.calls_failed.Load(MemoryOrder::RELAXED)),
+          last_call_started_cycle(
+              that.last_call_started_cycle.Load(MemoryOrder::RELAXED)) {}
+
+    Atomic<int64_t> calls_started{0};
+    Atomic<int64_t> calls_succeeded{0};
+    Atomic<int64_t> calls_failed{0};
+    Atomic<gpr_cycle_counter> last_call_started_cycle{0};
+    // Make sure the size is exactly one cache line.
+    uint8_t padding[GPR_CACHELINE_SIZE - 3 * sizeof(Atomic<intptr_t>) -
+                    sizeof(Atomic<gpr_cycle_counter>)];
+  };
+  // TODO(soheilhy,veblush): Revist this after abseil integration.
+  // This has a problem when using abseil inlined_vector because it
+  // carries an alignment attribute properly but our allocator doesn't
+  // respect this. To avoid UBSAN errors, this should be removed with
+  // abseil inlined_vector.
+  // GPR_ALIGN_STRUCT(GPR_CACHELINE_SIZE);
+
+  struct CounterData {
+    int64_t calls_started = 0;
+    int64_t calls_succeeded = 0;
+    int64_t calls_failed = 0;
+    gpr_cycle_counter last_call_started_cycle = 0;
+  };
+
+  // collects the sharded data into one CounterData struct.
+  void CollectData(CounterData* out);
+
+  // Really zero-sized, but 0-sized arrays are illegal on MSVC.
+  InlinedVector<AtomicCounterData, 1> per_cpu_counter_data_storage_;
+  size_t num_cores_ = 0;
+};
+
+// Handles channelz bookkeeping for channels
+class ChannelNode : public BaseNode {
+ public:
+  ChannelNode(std::string target, size_t channel_tracer_max_nodes,
+              intptr_t parent_uuid);
+
+  // Returns the string description of the given connectivity state.
+  static const char* GetChannelConnectivityStateChangeString(
+      grpc_connectivity_state state);
+
+  intptr_t parent_uuid() const { return parent_uuid_; }
+
+  Json RenderJson() override;
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+  void SetConnectivityState(grpc_connectivity_state state);
+
+  // TODO(roth): take in a RefCountedPtr to the child channel so we can retrieve
+  // the human-readable name.
+  void AddChildChannel(intptr_t child_uuid);
+  void RemoveChildChannel(intptr_t child_uuid);
+
+  // TODO(roth): take in a RefCountedPtr to the child subchannel so we can
+  // retrieve the human-readable name.
+  void AddChildSubchannel(intptr_t child_uuid);
+  void RemoveChildSubchannel(intptr_t child_uuid);
+
+ private:
+  void PopulateChildRefs(Json::Object* json);
+
+  // to allow the channel trace test to access trace_.
+  friend class testing::ChannelNodePeer;
+
+  std::string target_;
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+  const intptr_t parent_uuid_;
+
+  // Least significant bit indicates whether the value is set.  Remaining
+  // bits are a grpc_connectivity_state value.
+  Atomic<int> connectivity_state_{0};
+
+  Mutex child_mu_;  // Guards child maps below.
+  // TODO(roth): We don't actually use the values here, only the keys, so
+  // these should be sets instead of maps, but we don't currently have a set
+  // implementation.  Change this if/when we have one.
+  std::map<intptr_t, bool> child_channels_;
+  std::map<intptr_t, bool> child_subchannels_;
+};
+
+// Handles channelz bookkeeping for servers
+class ServerNode : public BaseNode {
+ public:
+  ServerNode(grpc_server* server, size_t channel_tracer_max_nodes);
+
+  ~ServerNode() override;
+
+  Json RenderJson() override;
+
+  std::string RenderServerSockets(intptr_t start_socket_id,
+                                  intptr_t max_results);
+
+  void AddChildSocket(RefCountedPtr<SocketNode> node);
+
+  void RemoveChildSocket(intptr_t child_uuid);
+
+  void AddChildListenSocket(RefCountedPtr<ListenSocketNode> node);
+
+  void RemoveChildListenSocket(intptr_t child_uuid);
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+ private:
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+  Mutex child_mu_;  // Guards child maps below.
+  std::map<intptr_t, RefCountedPtr<SocketNode>> child_sockets_;
+  std::map<intptr_t, RefCountedPtr<ListenSocketNode>> child_listen_sockets_;
+};
+
+// Handles channelz bookkeeping for sockets
+class SocketNode : public BaseNode {
+ public:
+  SocketNode(std::string local, std::string remote, std::string name);
+  ~SocketNode() override {}
+
+  Json RenderJson() override;
+
+  void RecordStreamStartedFromLocal();
+  void RecordStreamStartedFromRemote();
+  void RecordStreamSucceeded() {
+    streams_succeeded_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  void RecordStreamFailed() {
+    streams_failed_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  void RecordMessagesSent(uint32_t num_sent);
+  void RecordMessageReceived();
+  void RecordKeepaliveSent() {
+    keepalives_sent_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+
+  const std::string& remote() { return remote_; }
+
+ private:
+  Atomic<int64_t> streams_started_{0};
+  Atomic<int64_t> streams_succeeded_{0};
+  Atomic<int64_t> streams_failed_{0};
+  Atomic<int64_t> messages_sent_{0};
+  Atomic<int64_t> messages_received_{0};
+  Atomic<int64_t> keepalives_sent_{0};
+  Atomic<gpr_cycle_counter> last_local_stream_created_cycle_{0};
+  Atomic<gpr_cycle_counter> last_remote_stream_created_cycle_{0};
+  Atomic<gpr_cycle_counter> last_message_sent_cycle_{0};
+  Atomic<gpr_cycle_counter> last_message_received_cycle_{0};
+  std::string local_;
+  std::string remote_;
+};
+
+// Handles channelz bookkeeping for listen sockets
+class ListenSocketNode : public BaseNode {
+ public:
+  ListenSocketNode(std::string local_addr, std::string name);
+  ~ListenSocketNode() override {}
+
+  Json RenderJson() override;
+
+ private:
+  std::string local_addr_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNELZ_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz_registry.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz_registry.h
new file mode 100644
index 0000000..d777651
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/channelz_registry.h	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stdint.h>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+namespace channelz {
+
+// singleton registry object to track all objects that are needed to support
+// channelz bookkeeping. All objects share globally distributed uuids.
+class ChannelzRegistry {
+ public:
+  // To be called in grpc_init()
+  static void Init();
+
+  // To be called in grpc_shutdown();
+  static void Shutdown();
+
+  static void Register(BaseNode* node) {
+    return Default()->InternalRegister(node);
+  }
+  static void Unregister(intptr_t uuid) { Default()->InternalUnregister(uuid); }
+  static RefCountedPtr<BaseNode> Get(intptr_t uuid) {
+    return Default()->InternalGet(uuid);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetTopChannelsResponse as per channelz.proto.
+  static std::string GetTopChannels(intptr_t start_channel_id) {
+    return Default()->InternalGetTopChannels(start_channel_id);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetServersResponse as per channelz.proto.
+  static std::string GetServers(intptr_t start_server_id) {
+    return Default()->InternalGetServers(start_server_id);
+  }
+
+  // Test only helper function to dump the JSON representation to std out.
+  // This can aid in debugging channelz code.
+  static void LogAllEntities() { Default()->InternalLogAllEntities(); }
+
+ private:
+  // Returned the singleton instance of ChannelzRegistry;
+  static ChannelzRegistry* Default();
+
+  // globally registers an Entry. Returns its unique uuid
+  void InternalRegister(BaseNode* node);
+
+  // globally unregisters the object that is associated to uuid. Also does
+  // sanity check that an object doesn't try to unregister the wrong type.
+  void InternalUnregister(intptr_t uuid);
+
+  // if object with uuid has previously been registered as the correct type,
+  // returns the void* associated with that uuid. Else returns nullptr.
+  RefCountedPtr<BaseNode> InternalGet(intptr_t uuid);
+
+  std::string InternalGetTopChannels(intptr_t start_channel_id);
+  std::string InternalGetServers(intptr_t start_server_id);
+
+  void InternalLogAllEntities();
+
+  // protects members
+  Mutex mu_;
+  std::map<intptr_t, BaseNode*> node_map_;
+  intptr_t uuid_generator_ = 0;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/connected_channel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/connected_channel.h
new file mode 100644
index 0000000..faa1c73
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/connected_channel.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
+#define GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+
+extern const grpc_channel_filter grpc_connected_filter;
+
+bool grpc_add_connected_filter(grpc_channel_stack_builder* builder,
+                               void* arg_must_be_null);
+
+/* Debug helper to dig the transport stream out of a call element */
+grpc_stream* grpc_connected_channel_get_stream(grpc_call_element* elem);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/context.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/context.h
new file mode 100644
index 0000000..e8a0245
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/context.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CONTEXT_H
+#define GRPC_CORE_LIB_CHANNEL_CONTEXT_H
+
+/// Call object context pointers.
+
+/// Call context is represented as an array of \a grpc_call_context_elements.
+/// This enum represents the indexes into the array, where each index
+/// contains a different type of value.
+typedef enum {
+  /// Value is either a \a grpc_client_security_context or a
+  /// \a grpc_server_security_context.
+  GRPC_CONTEXT_SECURITY = 0,
+
+  /// Value is a \a census_context.
+  GRPC_CONTEXT_TRACING,
+
+  /// Reserved for traffic_class_context.
+  GRPC_CONTEXT_TRAFFIC,
+
+  /// Holds a pointer to ServiceConfig::CallData associated with this call.
+  GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA,
+
+  GRPC_CONTEXT_COUNT
+} grpc_context_index;
+
+struct grpc_call_context_element {
+  void* value = nullptr;
+  void (*destroy)(void*) = nullptr;
+};
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CONTEXT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker.h
new file mode 100644
index 0000000..4f064d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker.h	
@@ -0,0 +1,177 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
+
+namespace grpc_core {
+
+/// Handshakers are used to perform initial handshakes on a connection
+/// before the client sends the initial request.  Some examples of what
+/// a handshaker can be used for includes support for HTTP CONNECT on
+/// the client side and various types of security initialization.
+///
+/// In general, handshakers should be used via a handshake manager.
+
+/// Arguments passed through handshakers and to the on_handshake_done callback.
+///
+/// For handshakers, all members are input/output parameters; for
+/// example, a handshaker may read from or write to \a endpoint and
+/// then later replace it with a wrapped endpoint.  Similarly, a
+/// handshaker may modify \a args.
+///
+/// A handshaker takes ownership of the members while a handshake is in
+/// progress.  Upon failure or shutdown of an in-progress handshaker,
+/// the handshaker is responsible for destroying the members and setting
+/// them to NULL before invoking the on_handshake_done callback.
+///
+/// For the on_handshake_done callback, all members are input arguments,
+/// which the callback takes ownership of.
+struct HandshakerArgs {
+  grpc_endpoint* endpoint = nullptr;
+  grpc_channel_args* args = nullptr;
+  grpc_slice_buffer* read_buffer = nullptr;
+  // A handshaker may set this to true before invoking on_handshake_done
+  // to indicate that subsequent handshakers should be skipped.
+  bool exit_early = false;
+  // User data passed through the handshake manager.  Not used by
+  // individual handshakers.
+  void* user_data = nullptr;
+};
+
+///
+/// Handshaker
+///
+
+class Handshaker : public RefCounted<Handshaker> {
+ public:
+  virtual ~Handshaker() = default;
+  virtual void Shutdown(grpc_error* why) = 0;
+  virtual void DoHandshake(grpc_tcp_server_acceptor* acceptor,
+                           grpc_closure* on_handshake_done,
+                           HandshakerArgs* args) = 0;
+  virtual const char* name() const = 0;
+};
+
+//
+// HandshakeManager
+//
+
+class HandshakeManager : public RefCounted<HandshakeManager> {
+ public:
+  HandshakeManager();
+  ~HandshakeManager();
+
+  /// Add \a mgr to the server side list of all pending handshake managers, the
+  /// list starts with \a *head.
+  // Not thread-safe. Caller needs to synchronize.
+  void AddToPendingMgrList(HandshakeManager** head);
+
+  /// Remove \a mgr from the server side list of all pending handshake managers.
+  // Not thread-safe. Caller needs to synchronize.
+  void RemoveFromPendingMgrList(HandshakeManager** head);
+
+  /// Shutdown all pending handshake managers starting at head on the server
+  /// side. Not thread-safe. Caller needs to synchronize.
+  void ShutdownAllPending(grpc_error* why);
+
+  /// Adds a handshaker to the handshake manager.
+  /// Takes ownership of \a handshaker.
+  void Add(RefCountedPtr<Handshaker> handshaker);
+
+  /// Shuts down the handshake manager (e.g., to clean up when the operation is
+  /// aborted in the middle).
+  void Shutdown(grpc_error* why);
+
+  /// Invokes handshakers in the order they were added.
+  /// Takes ownership of \a endpoint, and then passes that ownership to
+  /// the \a on_handshake_done callback.
+  /// Does NOT take ownership of \a channel_args.  Instead, makes a copy before
+  /// invoking the first handshaker.
+  /// \a acceptor will be nullptr for client-side handshakers.
+  ///
+  /// When done, invokes \a on_handshake_done with a HandshakerArgs
+  /// object as its argument.  If the callback is invoked with error !=
+  /// GRPC_ERROR_NONE, then handshaking failed and the handshaker has done
+  /// the necessary clean-up.  Otherwise, the callback takes ownership of
+  /// the arguments.
+  void DoHandshake(grpc_endpoint* endpoint,
+                   const grpc_channel_args* channel_args, grpc_millis deadline,
+                   grpc_tcp_server_acceptor* acceptor,
+                   grpc_iomgr_cb_func on_handshake_done, void* user_data);
+
+ private:
+  bool CallNextHandshakerLocked(grpc_error* error);
+
+  // A function used as the handshaker-done callback when chaining
+  // handshakers together.
+  static void CallNextHandshakerFn(void* arg, grpc_error* error);
+
+  // Callback invoked when deadline is exceeded.
+  static void OnTimeoutFn(void* arg, grpc_error* error);
+
+  static const size_t HANDSHAKERS_INIT_SIZE = 2;
+
+  gpr_mu mu_;
+  bool is_shutdown_ = false;
+  // An array of handshakers added via grpc_handshake_manager_add().
+  InlinedVector<RefCountedPtr<Handshaker>, HANDSHAKERS_INIT_SIZE> handshakers_;
+  // The index of the handshaker to invoke next and closure to invoke it.
+  size_t index_ = 0;
+  grpc_closure call_next_handshaker_;
+  // The acceptor to call the handshakers with.
+  grpc_tcp_server_acceptor* acceptor_;
+  // Deadline timer across all handshakers.
+  grpc_timer deadline_timer_;
+  grpc_closure on_timeout_;
+  // The final callback and user_data to invoke after the last handshaker.
+  grpc_closure on_handshake_done_;
+  // Handshaker args.
+  HandshakerArgs args_;
+  // Links to the previous and next managers in a list of all pending handshakes
+  // Used at server side only.
+  HandshakeManager* prev_ = nullptr;
+  HandshakeManager* next_ = nullptr;
+};
+
+}  // namespace grpc_core
+
+// TODO(arjunroy): These are transitional to account for the new handshaker API
+// and will eventually be removed entirely.
+typedef grpc_core::HandshakeManager grpc_handshake_manager;
+typedef grpc_core::Handshaker grpc_handshaker;
+void grpc_handshake_manager_add(grpc_handshake_manager* mgr,
+                                grpc_handshaker* handshaker);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_factory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_factory.h
new file mode 100644
index 0000000..520e5e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_factory.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker.h"
+
+// A handshaker factory is used to create handshakers.
+
+namespace grpc_core {
+
+class HandshakerFactory {
+ public:
+  virtual void AddHandshakers(const grpc_channel_args* args,
+                              grpc_pollset_set* interested_parties,
+                              HandshakeManager* handshake_mgr) = 0;
+  virtual ~HandshakerFactory() = default;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_registry.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_registry.h
new file mode 100644
index 0000000..4a02efc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/handshaker_registry.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker_factory.h"
+
+namespace grpc_core {
+
+typedef enum {
+  HANDSHAKER_CLIENT = 0,
+  HANDSHAKER_SERVER,
+  NUM_HANDSHAKER_TYPES,  // Must be last.
+} HandshakerType;
+
+class HandshakerRegistry {
+ public:
+  /// Registers a new handshaker factory.  Takes ownership.
+  /// If \a at_start is true, the new handshaker will be at the beginning of
+  /// the list.  Otherwise, it will be added to the end.
+  static void RegisterHandshakerFactory(
+      bool at_start, HandshakerType handshaker_type,
+      std::unique_ptr<HandshakerFactory> factory);
+  static void AddHandshakers(HandshakerType handshaker_type,
+                             const grpc_channel_args* args,
+                             grpc_pollset_set* interested_parties,
+                             HandshakeManager* handshake_mgr);
+  static void Init();
+  static void Shutdown();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/status_util.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/status_util.h
new file mode 100644
index 0000000..5409de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/channel/status_util.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H
+#define GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+
+#include <stdbool.h>
+#include <string.h>
+
+/// If \a status_str is a valid status string, sets \a status to the
+/// corresponding status value and returns true.
+bool grpc_status_code_from_string(const char* status_str,
+                                  grpc_status_code* status);
+
+/// Returns the string form of \a status, or "UNKNOWN" if invalid.
+const char* grpc_status_code_to_string(grpc_status_code status);
+
+namespace grpc_core {
+namespace internal {
+
+/// A set of grpc_status_code values.
+class StatusCodeSet {
+ public:
+  bool Empty() const { return status_code_mask_ == 0; }
+
+  void Add(grpc_status_code status) { status_code_mask_ |= (1 << status); }
+
+  bool Contains(grpc_status_code status) const {
+    return status_code_mask_ & (1 << status);
+  }
+
+ private:
+  int status_code_mask_ = 0;  // A bitfield of status codes in the set.
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/algorithm_metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/algorithm_metadata.h
new file mode 100644
index 0000000..d58d2f5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/algorithm_metadata.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
+#define GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/compression.h>
+#include "src/core/lib/compression/compression_internal.h"
+#include "src/core/lib/transport/metadata.h"
+
+/** Return compression algorithm based metadata value */
+grpc_slice grpc_compression_algorithm_slice(
+    grpc_compression_algorithm algorithm);
+
+/** Find compression algorithm based on passed in mdstr - returns
+ *  GRPC_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_compression_algorithm grpc_compression_algorithm_from_slice(
+    const grpc_slice& str);
+
+/** Return compression algorithm based metadata element */
+grpc_mdelem grpc_compression_encoding_mdelem(
+    grpc_compression_algorithm algorithm);
+
+/** Return message compression algorithm based metadata element (grpc-encoding:
+ * xxx) */
+grpc_mdelem grpc_message_compression_encoding_mdelem(
+    grpc_message_compression_algorithm algorithm);
+
+/** Return stream compression algorithm based metadata element
+ * (content-encoding: xxx) */
+grpc_mdelem grpc_stream_compression_encoding_mdelem(
+    grpc_stream_compression_algorithm algorithm);
+
+/** Find compression algorithm based on passed in mdstr - returns
+ * GRPC_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_message_compression_algorithm
+grpc_message_compression_algorithm_from_slice(const grpc_slice& str);
+
+/** Find stream compression algorithm based on passed in mdstr - returns
+ * GRPC_STREAM_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice(
+    const grpc_slice& str);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_args.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_args.h
new file mode 100644
index 0000000..f1abc12
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_args.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H
+#define GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/compression.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+/** Returns the compression algorithm set in \a a. */
+grpc_compression_algorithm
+grpc_channel_args_get_channel_default_compression_algorithm(
+    const grpc_channel_args* a);
+
+/** Returns a channel arg instance with compression enabled. If \a a is
+ * non-NULL, its args are copied. N.B. GRPC_COMPRESS_NONE disables compression
+ * for the channel. */
+grpc_channel_args* grpc_channel_args_set_channel_default_compression_algorithm(
+    grpc_channel_args* a, grpc_compression_algorithm algorithm);
+
+/** Sets the support for the given compression algorithm. By default, all
+ * compression algorithms are enabled. It's an error to disable an algorithm set
+ * by grpc_channel_args_set_compression_algorithm.
+ *
+ * Returns an instance with the updated algorithm states. The \a a pointer is
+ * modified to point to the returned instance (which may be different from the
+ * input value of \a a). */
+grpc_channel_args* grpc_channel_args_compression_algorithm_set_state(
+    grpc_channel_args** a, grpc_compression_algorithm algorithm, int state);
+
+/** Returns the bitset representing the support state (true for enabled, false
+ * for disabled) for compression algorithms.
+ *
+ * The i-th bit of the returned bitset corresponds to the i-th entry in the
+ * grpc_compression_algorithm enum. */
+uint32_t grpc_channel_args_compression_algorithm_get_states(
+    const grpc_channel_args* a);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_internal.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_internal.h
new file mode 100644
index 0000000..49afb94
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/compression_internal.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
+#define GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  GRPC_MESSAGE_COMPRESS_NONE = 0,
+  GRPC_MESSAGE_COMPRESS_DEFLATE,
+  GRPC_MESSAGE_COMPRESS_GZIP,
+  /* TODO(ctiller): snappy */
+  GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT
+} grpc_message_compression_algorithm;
+
+/** Stream compression algorithms supported by gRPC */
+typedef enum {
+  GRPC_STREAM_COMPRESS_NONE = 0,
+  GRPC_STREAM_COMPRESS_GZIP,
+  GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT
+} grpc_stream_compression_algorithm;
+
+/* Interfaces performing transformation between compression algorithms and
+ * levels. */
+
+grpc_message_compression_algorithm
+grpc_compression_algorithm_to_message_compression_algorithm(
+    grpc_compression_algorithm algo);
+
+grpc_stream_compression_algorithm
+grpc_compression_algorithm_to_stream_compression_algorithm(
+    grpc_compression_algorithm algo);
+
+uint32_t grpc_compression_bitset_to_message_bitset(uint32_t bitset);
+
+uint32_t grpc_compression_bitset_to_stream_bitset(uint32_t bitset);
+
+uint32_t grpc_compression_bitset_from_message_stream_compression_bitset(
+    uint32_t message_bitset, uint32_t stream_bitset);
+
+int grpc_compression_algorithm_from_message_stream_compression_algorithm(
+    grpc_compression_algorithm* algorithm,
+    grpc_message_compression_algorithm message_algorithm,
+    grpc_stream_compression_algorithm stream_algorithm);
+
+/* Interfaces for message compression. */
+
+int grpc_message_compression_algorithm_name(
+    grpc_message_compression_algorithm algorithm, const char** name);
+
+grpc_message_compression_algorithm grpc_message_compression_algorithm_for_level(
+    grpc_compression_level level, uint32_t accepted_encodings);
+
+int grpc_message_compression_algorithm_parse(
+    grpc_slice value, grpc_message_compression_algorithm* algorithm);
+
+/* Interfaces for stream compression. */
+
+int grpc_stream_compression_algorithm_parse(
+    grpc_slice value, grpc_stream_compression_algorithm* algorithm);
+
+#ifdef __cplusplus
+}
+#endif
+
+inline int grpc_compression_options_is_algorithm_enabled_internal(
+    const grpc_compression_options* opts,
+    grpc_compression_algorithm algorithm) {
+  return GPR_BITGET(opts->enabled_algorithms_bitset, algorithm);
+}
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/message_compress.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/message_compress.h
new file mode 100644
index 0000000..91654e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/message_compress.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
+#define GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/compression/compression_internal.h"
+
+/* compress 'input' to 'output' using 'algorithm'.
+   On success, appends compressed slices to output and returns 1.
+   On failure, appends uncompressed slices to output and returns 0. */
+int grpc_msg_compress(grpc_message_compression_algorithm algorithm,
+                      grpc_slice_buffer* input, grpc_slice_buffer* output);
+
+/* decompress 'input' to 'output' using 'algorithm'.
+   On success, appends slices to output and returns 1.
+   On failure, output is unchanged, and returns 0. */
+int grpc_msg_decompress(grpc_message_compression_algorithm algorithm,
+                        grpc_slice_buffer* input, grpc_slice_buffer* output);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression.h
new file mode 100644
index 0000000..7328c3e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression.h	
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/slice_buffer.h>
+#include <zlib.h>
+
+#include "src/core/lib/transport/static_metadata.h"
+
+typedef struct grpc_stream_compression_vtable grpc_stream_compression_vtable;
+
+/* Stream compression/decompression context */
+typedef struct grpc_stream_compression_context {
+  const grpc_stream_compression_vtable* vtable;
+} grpc_stream_compression_context;
+
+typedef enum grpc_stream_compression_method {
+  GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS = 0,
+  GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_COMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_METHOD_COUNT
+} grpc_stream_compression_method;
+
+typedef enum grpc_stream_compression_flush {
+  GRPC_STREAM_COMPRESSION_FLUSH_NONE = 0,
+  GRPC_STREAM_COMPRESSION_FLUSH_SYNC,
+  GRPC_STREAM_COMPRESSION_FLUSH_FINISH,
+  GRPC_STREAM_COMPRESSION_FLUSH_COUNT
+} grpc_stream_compression_flush;
+
+struct grpc_stream_compression_vtable {
+  bool (*compress)(grpc_stream_compression_context* ctx, grpc_slice_buffer* in,
+                   grpc_slice_buffer* out, size_t* output_size,
+                   size_t max_output_size, grpc_stream_compression_flush flush);
+  bool (*decompress)(grpc_stream_compression_context* ctx,
+                     grpc_slice_buffer* in, grpc_slice_buffer* out,
+                     size_t* output_size, size_t max_output_size,
+                     bool* end_of_context);
+  grpc_stream_compression_context* (*context_create)(
+      grpc_stream_compression_method method);
+  void (*context_destroy)(grpc_stream_compression_context* ctx);
+};
+
+/**
+ * Compress bytes provided in \a in with a given context, with an optional flush
+ * at the end of compression. Emits at most \a max_output_size compressed bytes
+ * into \a out. If all the bytes in input buffer \a in are depleted and \a flush
+ * is not GRPC_STREAM_COMPRESSION_FLUSH_NONE, the corresponding flush method is
+ * executed. The total number of bytes emitted is outputted in \a output_size.
+ *
+ * A SYNC flush indicates that the entire messages in \a in can be decompressed
+ * from \a out. A FINISH flush implies a SYNC flush, and that any further
+ * compression will not be dependent on the state of the current context and any
+ * previous compressed bytes. It allows corresponding decompression context to
+ * be dropped when reaching this boundary.
+ */
+bool grpc_stream_compress(grpc_stream_compression_context* ctx,
+                          grpc_slice_buffer* in, grpc_slice_buffer* out,
+                          size_t* output_size, size_t max_output_size,
+                          grpc_stream_compression_flush flush);
+
+/**
+ * Decompress bytes provided in \a in with a given context. Emits at most \a
+ * max_output_size decompressed bytes into \a out. If decompression process
+ * reached the end of a gzip stream, \a end_of_context is set to true; otherwise
+ * it is set to false. The total number of bytes emitted is outputted in \a
+ * output_size.
+ */
+bool grpc_stream_decompress(grpc_stream_compression_context* ctx,
+                            grpc_slice_buffer* in, grpc_slice_buffer* out,
+                            size_t* output_size, size_t max_output_size,
+                            bool* end_of_context);
+
+/**
+ * Creates a stream compression context. \a pending_bytes_buffer is the input
+ * buffer for compression/decompression operations. \a method specifies whether
+ * the context is for compression or decompression.
+ */
+grpc_stream_compression_context* grpc_stream_compression_context_create(
+    grpc_stream_compression_method method);
+
+/**
+ * Destroys a stream compression context.
+ */
+void grpc_stream_compression_context_destroy(
+    grpc_stream_compression_context* ctx);
+
+/**
+ * Parse stream compression method based on algorithm name
+ */
+int grpc_stream_compression_method_parse(
+    grpc_slice value, bool is_compress, grpc_stream_compression_method* method);
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_gzip.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_gzip.h
new file mode 100644
index 0000000..740f097
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_gzip.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+
+extern const grpc_stream_compression_vtable grpc_stream_compression_gzip_vtable;
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_identity.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_identity.h
new file mode 100644
index 0000000..cc77b63
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/compression/stream_compression_identity.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+
+extern const grpc_stream_compression_vtable
+    grpc_stream_compression_identity_vtable;
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats.h
new file mode 100644
index 0000000..9e88ad7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_H
+#define GRPC_CORE_LIB_DEBUG_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/stats_data.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef struct grpc_stats_data {
+  gpr_atm counters[GRPC_STATS_COUNTER_COUNT];
+  gpr_atm histograms[GRPC_STATS_HISTOGRAM_BUCKETS];
+} grpc_stats_data;
+
+extern grpc_stats_data* grpc_stats_per_cpu_storage;
+
+#define GRPC_THREAD_STATS_DATA() \
+  (&grpc_stats_per_cpu_storage[grpc_core::ExecCtx::Get()->starting_cpu()])
+
+/* Only collect stats if GRPC_COLLECT_STATS is defined or it is a debug build.
+ */
+#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)
+#define GRPC_STATS_INC_COUNTER(ctr) \
+  (gpr_atm_no_barrier_fetch_add(&GRPC_THREAD_STATS_DATA()->counters[(ctr)], 1))
+
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)                             \
+  (gpr_atm_no_barrier_fetch_add(                                               \
+      &GRPC_THREAD_STATS_DATA()->histograms[histogram##_FIRST_SLOT + (index)], \
+      1))
+#else /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+#define GRPC_STATS_INC_COUNTER(ctr)
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)
+#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+
+void grpc_stats_init(void);
+void grpc_stats_shutdown(void);
+void grpc_stats_collect(grpc_stats_data* output);
+// c = b-a
+void grpc_stats_diff(const grpc_stats_data* b, const grpc_stats_data* a,
+                     grpc_stats_data* c);
+char* grpc_stats_data_as_json(const grpc_stats_data* data);
+int grpc_stats_histo_find_bucket_slow(int value, const int* table,
+                                      int table_size);
+double grpc_stats_histo_percentile(const grpc_stats_data* data,
+                                   grpc_stats_histograms histogram,
+                                   double percentile);
+size_t grpc_stats_histo_count(const grpc_stats_data* data,
+                              grpc_stats_histograms histogram);
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats_data.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats_data.h
new file mode 100644
index 0000000..1f3861f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/stats_data.h	
@@ -0,0 +1,555 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_stats_data.py
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+#define GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef enum {
+  GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CALLS_CREATED,
+  GRPC_STATS_COUNTER_CQS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SYSCALL_POLL,
+  GRPC_STATS_COUNTER_SYSCALL_WAIT,
+  GRPC_STATS_COUNTER_POLLSET_KICK,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV,
+  GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD,
+  GRPC_STATS_COUNTER_SYSCALL_EPOLL_CTL,
+  GRPC_STATS_COUNTER_POLLSET_FD_CACHE_HITS,
+  GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS,
+  GRPC_STATS_COUNTER_SYSCALL_WRITE,
+  GRPC_STATS_COUNTER_SYSCALL_READ,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS,
+  GRPC_STATS_COUNTER_HTTP2_OP_BATCHES,
+  GRPC_STATS_COUNTER_HTTP2_OP_CANCEL,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_PINGS_SENT,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED,
+  GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_SPURIOUS_WRITES_BEGUN,
+  GRPC_STATS_COUNTER_HPACK_RECV_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64,
+  GRPC_STATS_COUNTER_HPACK_SEND_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED,
+  GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_INITIATED,
+  GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS,
+  GRPC_STATS_COUNTER_CALL_COMBINER_SET_NOTIFY_ON_CANCEL,
+  GRPC_STATS_COUNTER_CALL_COMBINER_CANCELLED,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF,
+  GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED,
+  GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED,
+  GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES,
+  GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS,
+  GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_FAILURES,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_SUCCESSES,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES,
+  GRPC_STATS_COUNTER_COUNT
+} grpc_stats_counters;
+extern const char* grpc_stats_counter_name[GRPC_STATS_COUNTER_COUNT];
+extern const char* grpc_stats_counter_doc[GRPC_STATS_COUNTER_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED,
+  GRPC_STATS_HISTOGRAM_COUNT
+} grpc_stats_histograms;
+extern const char* grpc_stats_histogram_name[GRPC_STATS_HISTOGRAM_COUNT];
+extern const char* grpc_stats_histogram_doc[GRPC_STATS_HISTOGRAM_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_FIRST_SLOT = 0,
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_FIRST_SLOT = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_BUCKETS = 128,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_FIRST_SLOT = 192,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_FIRST_SLOT = 256,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_FIRST_SLOT = 320,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_FIRST_SLOT = 384,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_FIRST_SLOT = 448,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_FIRST_SLOT = 512,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_FIRST_SLOT = 576,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_FIRST_SLOT = 640,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_FIRST_SLOT = 704,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_FIRST_SLOT = 768,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_FIRST_SLOT = 832,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_BUCKETS = 8,
+  GRPC_STATS_HISTOGRAM_BUCKETS = 840
+} grpc_stats_histogram_constants;
+#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)
+#define GRPC_STATS_INC_CLIENT_CALLS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED)
+#define GRPC_STATS_INC_SERVER_CALLS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_CALLS_CREATED)
+#define GRPC_STATS_INC_CQS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQS_CREATED)
+#define GRPC_STATS_INC_CLIENT_CHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED)
+#define GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED)
+#define GRPC_STATS_INC_SERVER_CHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED)
+#define GRPC_STATS_INC_SYSCALL_POLL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_POLL)
+#define GRPC_STATS_INC_SYSCALL_WAIT() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_WAIT)
+#define GRPC_STATS_INC_POLLSET_KICK() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK)
+#define GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER)
+#define GRPC_STATS_INC_POLLSET_KICKED_AGAIN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV)
+#define GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD)
+#define GRPC_STATS_INC_SYSCALL_EPOLL_CTL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_EPOLL_CTL)
+#define GRPC_STATS_INC_POLLSET_FD_CACHE_HITS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_FD_CACHE_HITS)
+#define GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS)
+#define GRPC_STATS_INC_SYSCALL_WRITE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_WRITE)
+#define GRPC_STATS_INC_SYSCALL_READ() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_READ)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS)
+#define GRPC_STATS_INC_HTTP2_OP_BATCHES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_BATCHES)
+#define GRPC_STATS_INC_HTTP2_OP_CANCEL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_CANCEL)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_SETTINGS_WRITES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES)
+#define GRPC_STATS_INC_HTTP2_PINGS_SENT() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_PINGS_SENT)
+#define GRPC_STATS_INC_HTTP2_WRITES_BEGUN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN)
+#define GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED)
+#define GRPC_STATS_INC_HTTP2_WRITES_CONTINUED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED)
+#define GRPC_STATS_INC_HTTP2_PARTIAL_WRITES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(                                         \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING() \
+  GRPC_STATS_INC_COUNTER(                                            \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT() \
+  GRPC_STATS_INC_COUNTER(                                        \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                       \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL() \
+  GRPC_STATS_INC_COUNTER(                                                \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL() \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING() \
+  GRPC_STATS_INC_COUNTER(                                               \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING() \
+  GRPC_STATS_INC_COUNTER(                                                              \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE() \
+  GRPC_STATS_INC_COUNTER(                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED() \
+  GRPC_STATS_INC_COUNTER(                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM)
+#define GRPC_STATS_INC_HTTP2_SPURIOUS_WRITES_BEGUN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_SPURIOUS_WRITES_BEGUN)
+#define GRPC_STATS_INC_HPACK_RECV_INDEXED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_INDEXED)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_RECV_HUFFMAN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_BINARY)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64)
+#define GRPC_STATS_INC_HPACK_SEND_INDEXED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_INDEXED)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_SEND_HUFFMAN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_BINARY)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64)
+#define GRPC_STATS_INC_COMBINER_LOCKS_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS() \
+  GRPC_STATS_INC_COUNTER(                                     \
+      GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED)
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_INITIATED)
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS)
+#define GRPC_STATS_INC_CALL_COMBINER_SET_NOTIFY_ON_CANCEL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_SET_NOTIFY_ON_CANCEL)
+#define GRPC_STATS_INC_CALL_COMBINER_CANCELLED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_CANCELLED)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF)
+#define GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED)
+#define GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED)
+#define GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES)
+#define GRPC_STATS_INC_SERVER_REQUESTED_CALLS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS)
+#define GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_FAILURES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_FAILURES)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_SUCCESSES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_SUCCESSES)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES)
+#define GRPC_STATS_INC_CALL_INITIAL_SIZE(value) \
+  grpc_stats_inc_call_initial_size((int)(value))
+void grpc_stats_inc_call_initial_size(int x);
+#define GRPC_STATS_INC_POLL_EVENTS_RETURNED(value) \
+  grpc_stats_inc_poll_events_returned((int)(value))
+void grpc_stats_inc_poll_events_returned(int x);
+#define GRPC_STATS_INC_TCP_WRITE_SIZE(value) \
+  grpc_stats_inc_tcp_write_size((int)(value))
+void grpc_stats_inc_tcp_write_size(int x);
+#define GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(value) \
+  grpc_stats_inc_tcp_write_iov_size((int)(value))
+void grpc_stats_inc_tcp_write_iov_size(int x);
+#define GRPC_STATS_INC_TCP_READ_SIZE(value) \
+  grpc_stats_inc_tcp_read_size((int)(value))
+void grpc_stats_inc_tcp_read_size(int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER(value) \
+  grpc_stats_inc_tcp_read_offer((int)(value))
+void grpc_stats_inc_tcp_read_offer(int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(value) \
+  grpc_stats_inc_tcp_read_offer_iov_size((int)(value))
+void grpc_stats_inc_tcp_read_offer_iov_size(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(value) \
+  grpc_stats_inc_http2_send_message_size((int)(value))
+void grpc_stats_inc_http2_send_message_size(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_initial_metadata_per_write((int)(value))
+void grpc_stats_inc_http2_send_initial_metadata_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_message_per_write((int)(value))
+void grpc_stats_inc_http2_send_message_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_trailing_metadata_per_write((int)(value))
+void grpc_stats_inc_http2_send_trailing_metadata_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_flowctl_per_write((int)(value))
+void grpc_stats_inc_http2_send_flowctl_per_write(int x);
+#define GRPC_STATS_INC_SERVER_CQS_CHECKED(value) \
+  grpc_stats_inc_server_cqs_checked((int)(value))
+void grpc_stats_inc_server_cqs_checked(int x);
+#else
+#define GRPC_STATS_INC_CLIENT_CALLS_CREATED()
+#define GRPC_STATS_INC_SERVER_CALLS_CREATED()
+#define GRPC_STATS_INC_CQS_CREATED()
+#define GRPC_STATS_INC_CLIENT_CHANNELS_CREATED()
+#define GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED()
+#define GRPC_STATS_INC_SERVER_CHANNELS_CREATED()
+#define GRPC_STATS_INC_SYSCALL_POLL()
+#define GRPC_STATS_INC_SYSCALL_WAIT()
+#define GRPC_STATS_INC_POLLSET_KICK()
+#define GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER()
+#define GRPC_STATS_INC_POLLSET_KICKED_AGAIN()
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD()
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV()
+#define GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD()
+#define GRPC_STATS_INC_SYSCALL_EPOLL_CTL()
+#define GRPC_STATS_INC_POLLSET_FD_CACHE_HITS()
+#define GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS()
+#define GRPC_STATS_INC_SYSCALL_WRITE()
+#define GRPC_STATS_INC_SYSCALL_READ()
+#define GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED()
+#define GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS()
+#define GRPC_STATS_INC_HTTP2_OP_BATCHES()
+#define GRPC_STATS_INC_HTTP2_OP_CANCEL()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_SETTINGS_WRITES()
+#define GRPC_STATS_INC_HTTP2_PINGS_SENT()
+#define GRPC_STATS_INC_HTTP2_WRITES_BEGUN()
+#define GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED()
+#define GRPC_STATS_INC_HTTP2_WRITES_CONTINUED()
+#define GRPC_STATS_INC_HTTP2_PARTIAL_WRITES()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM()
+#define GRPC_STATS_INC_HTTP2_SPURIOUS_WRITES_BEGUN()
+#define GRPC_STATS_INC_HPACK_RECV_INDEXED()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED()
+#define GRPC_STATS_INC_HPACK_RECV_HUFFMAN()
+#define GRPC_STATS_INC_HPACK_RECV_BINARY()
+#define GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64()
+#define GRPC_STATS_INC_HPACK_SEND_INDEXED()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED()
+#define GRPC_STATS_INC_HPACK_SEND_HUFFMAN()
+#define GRPC_STATS_INC_HPACK_SEND_BINARY()
+#define GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64()
+#define GRPC_STATS_INC_COMBINER_LOCKS_INITIATED()
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS()
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS()
+#define GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED()
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_INITIATED()
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS()
+#define GRPC_STATS_INC_CALL_COMBINER_SET_NOTIFY_ON_CANCEL()
+#define GRPC_STATS_INC_CALL_COMBINER_CANCELLED()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF()
+#define GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED()
+#define GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED()
+#define GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES()
+#define GRPC_STATS_INC_SERVER_REQUESTED_CALLS()
+#define GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_FAILURES()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_SUCCESSES()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES()
+#define GRPC_STATS_INC_CALL_INITIAL_SIZE(value)
+#define GRPC_STATS_INC_POLL_EVENTS_RETURNED(value)
+#define GRPC_STATS_INC_TCP_WRITE_SIZE(value)
+#define GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(value)
+#define GRPC_STATS_INC_TCP_READ_SIZE(value)
+#define GRPC_STATS_INC_TCP_READ_OFFER(value)
+#define GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(value)
+#define GRPC_STATS_INC_SERVER_CQS_CHECKED(value)
+#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+extern const int grpc_stats_histo_buckets[13];
+extern const int grpc_stats_histo_start[13];
+extern const int* const grpc_stats_histo_bucket_boundaries[13];
+extern void (*const grpc_stats_inc_histogram[13])(int x);
+
+#endif /* GRPC_CORE_LIB_DEBUG_STATS_DATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/trace.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/trace.h
new file mode 100644
index 0000000..ac7b40e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/debug/trace.h	
@@ -0,0 +1,131 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_TRACE_H
+#define GRPC_CORE_LIB_DEBUG_TRACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include <stdbool.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_trace);
+
+// TODO(veblush): Remove this deprecated function once codes depending on this
+// function are updated in the internal repo.
+void grpc_tracer_init(const char* env_var_name);
+
+void grpc_tracer_init();
+void grpc_tracer_shutdown(void);
+
+#if defined(__has_feature)
+#if __has_feature(thread_sanitizer)
+#define GRPC_THREADSAFE_TRACER
+#endif
+#endif
+
+namespace grpc_core {
+
+class TraceFlag;
+class TraceFlagList {
+ public:
+  static bool Set(const char* name, bool enabled);
+  static void Add(TraceFlag* flag);
+
+ private:
+  static void LogAllTracers();
+  static TraceFlag* root_tracer_;
+};
+
+namespace testing {
+void grpc_tracer_enable_flag(grpc_core::TraceFlag* flag);
+}
+
+class TraceFlag {
+ public:
+  TraceFlag(bool default_enabled, const char* name);
+  // TraceFlag needs to be trivially destructible since it is used as global
+  // variable.
+  ~TraceFlag() = default;
+
+  const char* name() const { return name_; }
+
+// Use the symbol GRPC_USE_TRACERS to determine if tracers will be enabled in
+// opt builds (tracers are always on in dbg builds). The default in OSS is for
+// tracers to be on since we support binary distributions of gRPC for the
+// wrapped language (wr don't want to force recompilation to get tracing).
+// Internally, however, for performance reasons, we compile them out by
+// default, since internal build systems make recompiling trivial.
+//
+// Prefer GRPC_TRACE_FLAG_ENABLED() macro instead of using enabled() directly.
+#define GRPC_USE_TRACERS  // tracers on by default in OSS
+#if defined(GRPC_USE_TRACERS) || !defined(NDEBUG)
+  bool enabled() {
+#ifdef GRPC_THREADSAFE_TRACER
+    return gpr_atm_no_barrier_load(&value_) != 0;
+#else
+    return value_;
+#endif  // GRPC_THREADSAFE_TRACER
+  }
+#else
+  bool enabled() { return false; }
+#endif /* defined(GRPC_USE_TRACERS) || !defined(NDEBUG) */
+
+ private:
+  friend void grpc_core::testing::grpc_tracer_enable_flag(TraceFlag* flag);
+  friend class TraceFlagList;
+
+  void set_enabled(bool enabled) {
+#ifdef GRPC_THREADSAFE_TRACER
+    gpr_atm_no_barrier_store(&value_, enabled);
+#else
+    value_ = enabled;
+#endif
+  }
+
+  TraceFlag* next_tracer_;
+  const char* const name_;
+#ifdef GRPC_THREADSAFE_TRACER
+  gpr_atm value_;
+#else
+  bool value_;
+#endif
+};
+
+#define GRPC_TRACE_FLAG_ENABLED(f) GPR_UNLIKELY((f).enabled())
+
+#ifndef NDEBUG
+typedef TraceFlag DebugOnlyTraceFlag;
+#else
+class DebugOnlyTraceFlag {
+ public:
+  constexpr DebugOnlyTraceFlag(bool /*default_enabled*/, const char* /*name*/) {
+  }
+  constexpr bool enabled() const { return false; }
+  constexpr const char* name() const { return "DebugOnlyTraceFlag"; }
+
+ private:
+  void set_enabled(bool /*enabled*/) {}
+};
+#endif
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_DEBUG_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/alloc.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/alloc.h
new file mode 100644
index 0000000..762b51b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/alloc.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_ALLOC_H
+#define GRPC_CORE_LIB_GPR_ALLOC_H
+
+#include <grpc/support/port_platform.h>
+
+/// Given a size, round up to the next multiple of sizeof(void*).
+#define GPR_ROUND_UP_TO_ALIGNMENT_SIZE(x) \
+  (((x) + GPR_MAX_ALIGNMENT - 1u) & ~(GPR_MAX_ALIGNMENT - 1u))
+
+#endif /* GRPC_CORE_LIB_GPR_ALLOC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/arena.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/arena.h
new file mode 100644
index 0000000..4d70695
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/arena.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// \file Arena based allocator
+// Allows very fast allocation of memory, but that memory cannot be freed until
+// the arena as a whole is freed
+// Tracks the total memory allocated against it, so that future arenas can
+// pre-allocate the right amount of memory
+// This transitional API is deprecated and will be removed soon in favour of
+// src/core/lib/gprpp/arena.h .
+
+#ifndef GRPC_CORE_LIB_GPR_ARENA_H
+#define GRPC_CORE_LIB_GPR_ARENA_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/arena.h"
+
+// TODO(arjunroy) : Remove deprecated gpr_arena API once all callers are gone.
+typedef class grpc_core::Arena gpr_arena;
+// Create an arena, with \a initial_size bytes in the first allocated buffer
+inline gpr_arena* gpr_arena_create(size_t initial_size) {
+  return grpc_core::Arena::Create(initial_size);
+}
+// Destroy an arena, returning the total number of bytes allocated
+inline size_t gpr_arena_destroy(gpr_arena* arena) { return arena->Destroy(); }
+// Allocate \a size bytes from the arena
+inline void* gpr_arena_alloc(gpr_arena* arena, size_t size) {
+  return arena->Alloc(size);
+}
+
+#endif /* GRPC_CORE_LIB_GPR_ARENA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/env.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/env.h
new file mode 100644
index 0000000..f5016c6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/env.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_ENV_H
+#define GRPC_CORE_LIB_GPR_ENV_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+/* Env utility functions */
+
+/* Gets the environment variable value with the specified name.
+   Returns a newly allocated string. It is the responsibility of the caller to
+   gpr_free the return value if not NULL (which means that the environment
+   variable exists). */
+char* gpr_getenv(const char* name);
+
+/* Sets the environment with the specified name to the specified value. */
+void gpr_setenv(const char* name, const char* value);
+
+/* Deletes the variable name from the environment. */
+void gpr_unsetenv(const char* name);
+
+#endif /* GRPC_CORE_LIB_GPR_ENV_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/murmur_hash.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/murmur_hash.h
new file mode 100644
index 0000000..8004889
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/murmur_hash.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_MURMUR_HASH_H
+#define GRPC_CORE_LIB_GPR_MURMUR_HASH_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* compute the hash of key (length len) */
+uint32_t gpr_murmur_hash3(const void* key, size_t len, uint32_t seed);
+
+#endif /* GRPC_CORE_LIB_GPR_MURMUR_HASH_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/spinlock.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/spinlock.h
new file mode 100644
index 0000000..9f35530
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/spinlock.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_SPINLOCK_H
+#define GRPC_CORE_LIB_GPR_SPINLOCK_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+/* Simple spinlock. No backoff strategy, gpr_spinlock_lock is almost always
+   a concurrency code smell. */
+typedef struct {
+  gpr_atm atm;
+} gpr_spinlock;
+
+#ifdef __cplusplus
+#define GPR_SPINLOCK_INITIALIZER (gpr_spinlock{0})
+#else
+#define GPR_SPINLOCK_INITIALIZER ((gpr_spinlock){0})
+#endif
+#define GPR_SPINLOCK_STATIC_INITIALIZER \
+  { 0 }
+
+#define gpr_spinlock_trylock(lock) (gpr_atm_acq_cas(&(lock)->atm, 0, 1))
+#define gpr_spinlock_unlock(lock) (gpr_atm_rel_store(&(lock)->atm, 0))
+#define gpr_spinlock_lock(lock) \
+  do {                          \
+  } while (!gpr_spinlock_trylock((lock)))
+
+#endif /* GRPC_CORE_LIB_GPR_SPINLOCK_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string.h
new file mode 100644
index 0000000..fcccf5e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_STRING_H
+#define GRPC_CORE_LIB_GPR_STRING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/* String utility functions */
+
+/* Flags for gpr_dump function. */
+#define GPR_DUMP_HEX 0x00000001
+#define GPR_DUMP_ASCII 0x00000002
+
+/* Converts array buf, of length len, into a C string according to the flags.
+   Result should be freed with gpr_free() */
+char* gpr_dump(const char* buf, size_t len, uint32_t flags);
+/* Converts array buf, of length len, into a C string according to the flags.
+   The length of the returned buffer is stored in out_len.
+   Result should be freed with gpr_free() */
+char* gpr_dump_return_len(const char* buf, size_t len, uint32_t flags,
+                          size_t* out_len);
+
+/* Parses an array of bytes into an integer (base 10). Returns 1 on success,
+   0 on failure. */
+int gpr_parse_bytes_to_uint32(const char* data, size_t length,
+                              uint32_t* result);
+
+/* Minimum buffer size for calling ltoa */
+#define GPR_LTOA_MIN_BUFSIZE (3 * sizeof(long))
+
+/* Convert a long to a string in base 10; returns the length of the
+   output string (or 0 on failure).
+   output must be at least GPR_LTOA_MIN_BUFSIZE bytes long. */
+int gpr_ltoa(long value, char* output);
+
+/* Minimum buffer size for calling int64toa */
+#define GPR_INT64TOA_MIN_BUFSIZE (3 * sizeof(int64_t))
+
+/* Convert an int64 to a string in base 10; returns the length of the
+output string (or 0 on failure).
+output must be at least GPR_INT64TOA_MIN_BUFSIZE bytes long.
+NOTE: This function ensures sufficient bit width even on Win x64,
+where long is 32bit is size.*/
+int int64_ttoa(int64_t value, char* output);
+
+// Parses a non-negative number from a value string.  Returns -1 on error.
+int gpr_parse_nonnegative_int(const char* value);
+
+/* Reverse a run of bytes */
+void gpr_reverse_bytes(char* str, int len);
+
+/* Pad a string with flag characters. The given length specifies the minimum
+   field width. The input string is never truncated. */
+char* gpr_leftpad(const char* str, char flag, size_t length);
+
+/* Join a set of strings, returning the resulting string.
+   Total combined length (excluding null terminator) is returned in total_length
+   if it is non-null. */
+char* gpr_strjoin(const char** strs, size_t nstrs, size_t* total_length);
+
+/* Join a set of strings using a separator, returning the resulting string.
+   Total combined length (excluding null terminator) is returned in total_length
+   if it is non-null. */
+char* gpr_strjoin_sep(const char** strs, size_t nstrs, const char* sep,
+                      size_t* total_length);
+
+void gpr_string_split(const char* input, const char* sep, char*** strs,
+                      size_t* nstrs);
+
+/* Returns an allocated string that represents tm according to RFC-3339, and,
+   more specifically, follows:
+   https://developers.google.com/protocol-buffers/docs/proto3#json
+
+   Uses RFC 3339, where generated output will always be Z-normalized and uses
+   0, 3, 6 or 9 fractional digits. */
+char* gpr_format_timespec(gpr_timespec);
+
+/* A vector of strings... for building up a final string one piece at a time */
+typedef struct {
+  char** strs;
+  size_t count;
+  size_t capacity;
+} gpr_strvec;
+
+/* Initialize/destroy */
+void gpr_strvec_init(gpr_strvec* strs);
+void gpr_strvec_destroy(gpr_strvec* strs);
+/* Add a string to a strvec, takes ownership of the string */
+void gpr_strvec_add(gpr_strvec* strs, char* add);
+/* Return a joined string with all added substrings, optionally setting
+   total_length as per gpr_strjoin */
+char* gpr_strvec_flatten(gpr_strvec* strs, size_t* total_length);
+
+/** Case insensitive string comparison... return <0 if lower(a)<lower(b), ==0 if
+    lower(a)==lower(b), >0 if lower(a)>lower(b) */
+int gpr_stricmp(const char* a, const char* b);
+int gpr_strincmp(const char* a, const char* b, size_t n);
+
+void* gpr_memrchr(const void* s, int c, size_t n);
+
+/* Try to parse given string into a boolean value.
+   When parsed successfully, dst will have the value and returns true.
+   Otherwise, it returns false. */
+bool gpr_parse_bool_value(const char* value, bool* dst);
+
+#endif /* GRPC_CORE_LIB_GPR_STRING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string_windows.h
new file mode 100644
index 0000000..e370f80
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/string_windows.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
+#define GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+/* These allocate new strings using gpr_malloc to convert from and to utf-8. */
+LPTSTR gpr_char_to_tchar(LPCSTR input);
+LPSTR gpr_tchar_to_char(LPCTSTR input);
+
+#endif /* GPR_WINDOWS */
+
+#endif /* GRPC_CORE_LIB_GPR_STRING_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/time_precise.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/time_precise.h
new file mode 100644
index 0000000..55eceb6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/time_precise.h	
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TIME_PRECISE_H
+#define GRPC_CORE_LIB_GPR_TIME_PRECISE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/support/time.h>
+
+// Depending on the platform gpr_get_cycle_counter() can have a resolution as
+// low as a usec. Use other clock sources or gpr_precise_clock_now(),
+// where you need high resolution clocks.
+//
+// Using gpr_get_cycle_counter() is preferred to using ExecCtx::Get()->Now()
+// whenever possible.
+
+#if GPR_CYCLE_COUNTER_RDTSC_32
+typedef int64_t gpr_cycle_counter;
+inline gpr_cycle_counter gpr_get_cycle_counter() {
+  int64_t ret;
+  __asm__ volatile("rdtsc" : "=A"(ret));
+  return ret;
+}
+#elif GPR_CYCLE_COUNTER_RDTSC_64
+typedef int64_t gpr_cycle_counter;
+inline gpr_cycle_counter gpr_get_cycle_counter() {
+  uint64_t low, high;
+  __asm__ volatile("rdtsc" : "=a"(low), "=d"(high));
+  return (high << 32) | low;
+}
+#elif GPR_CYCLE_COUNTER_FALLBACK
+// TODO(soheil): add support for mrs on Arm.
+
+// Real time in micros.
+typedef double gpr_cycle_counter;
+gpr_cycle_counter gpr_get_cycle_counter();
+#else
+#error Must define exactly one of \
+    GPR_CYCLE_COUNTER_RDTSC_32, \
+    GPR_CYCLE_COUNTER_RDTSC_64, or \
+    GPR_CYCLE_COUNTER_FALLBACK
+#endif
+
+void gpr_precise_clock_init(void);
+void gpr_precise_clock_now(gpr_timespec* clk);
+gpr_timespec gpr_cycle_counter_to_time(gpr_cycle_counter cycles);
+gpr_timespec gpr_cycle_counter_sub(gpr_cycle_counter a, gpr_cycle_counter b);
+
+#endif /* GRPC_CORE_LIB_GPR_TIME_PRECISE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls.h
new file mode 100644
index 0000000..aee8f4d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_H
+#define GRPC_CORE_LIB_GPR_TLS_H
+
+#include <grpc/support/port_platform.h>
+
+/** Thread local storage.
+
+   A minimal wrapper that should be implementable across many compilers,
+   and implementable efficiently across most modern compilers.
+
+   Thread locals have type intptr_t.
+
+   Declaring a thread local variable 'foo':
+     GPR_TLS_DECL(foo);
+   Thread locals always have static scope.
+
+   Declaring a thread local class variable 'foo':
+     GPR_TLS_CLASS_DECL(foo);
+
+   Defining the thread local class variable:
+     GPR_TLS_CLASS_DEF(foo);
+
+   Initializing a thread local (must be done at library initialization
+   time):
+     gpr_tls_init(&foo);
+
+   Destroying a thread local:
+     gpr_tls_destroy(&foo);
+
+   Setting a thread local (returns new_value):
+     gpr_tls_set(&foo, new_value);
+
+   Accessing a thread local:
+     current_value = gpr_tls_get(&foo);
+
+   ALL functions here may be implemented as macros. */
+
+#ifdef GPR_GCC_TLS
+#include "src/core/lib/gpr/tls_gcc.h"
+#endif
+
+#ifdef GPR_MSVC_TLS
+#include "src/core/lib/gpr/tls_msvc.h"
+#endif
+
+#ifdef GPR_PTHREAD_TLS
+#include "src/core/lib/gpr/tls_pthread.h"
+#endif
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_gcc.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_gcc.h
new file mode 100644
index 0000000..72b360b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_gcc.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_GCC_H
+#define GRPC_CORE_LIB_GPR_TLS_GCC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/support/log.h>
+
+/** Thread local storage based on gcc compiler primitives.
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_gcc_thread_local {
+  intptr_t value;
+};
+
+#define GPR_TLS_DECL(name) \
+  static __thread struct gpr_gcc_thread_local name = {0}
+
+#define GPR_TLS_CLASS_DECL(name) \
+  static __thread struct gpr_gcc_thread_local name
+
+#define GPR_TLS_CLASS_DEF(name) __thread struct gpr_gcc_thread_local name = {0}
+
+#define gpr_tls_init(tls) \
+  do {                    \
+  } while (0)
+#define gpr_tls_destroy(tls) \
+  do {                       \
+  } while (0)
+#define gpr_tls_set(tls, new_value) (((tls)->value) = (new_value))
+#define gpr_tls_get(tls) ((tls)->value)
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_GCC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_msvc.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_msvc.h
new file mode 100644
index 0000000..f4b3f0f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_msvc.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_MSVC_H
+#define GRPC_CORE_LIB_GPR_TLS_MSVC_H
+
+/** Thread local storage based on ms visual c compiler primitives.
+#include <grpc/support/port_platform.h>
+
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_msvc_thread_local {
+  intptr_t value;
+};
+
+/** Use GPR_TLS_DECL to declare tls static variables outside a class */
+#define GPR_TLS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+/** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name
+
+#define GPR_TLS_CLASS_DEF(name) \
+  __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+#define gpr_tls_init(tls) \
+  do {                    \
+  } while (0)
+#define gpr_tls_destroy(tls) \
+  do {                       \
+  } while (0)
+#define gpr_tls_set(tls, new_value) (((tls)->value) = (new_value))
+#define gpr_tls_get(tls) ((tls)->value)
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_MSVC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_pthread.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_pthread.h
new file mode 100644
index 0000000..a15f2f3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tls_pthread.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_PTHREAD_H
+#define GRPC_CORE_LIB_GPR_TLS_PTHREAD_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h> /* for GPR_ASSERT */
+#include <pthread.h>
+
+/** Thread local storage based on pthread library calls.
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_pthread_thread_local {
+  pthread_key_t key;
+};
+
+/** Use GPR_TLS_DECL to declare tls static variables outside a class */
+#define GPR_TLS_DECL(name) static struct gpr_pthread_thread_local name = {0}
+
+/** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DECL(name) static struct gpr_pthread_thread_local name
+
+/** Use GPR_TLS_CLASS_DEF to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DEF(name) struct gpr_pthread_thread_local name = {0}
+
+#define gpr_tls_init(tls) GPR_ASSERT(0 == pthread_key_create(&(tls)->key, NULL))
+#define gpr_tls_destroy(tls) pthread_key_delete((tls)->key)
+#define gpr_tls_get(tls) ((intptr_t)pthread_getspecific((tls)->key))
+#ifdef __cplusplus
+extern "C" {
+#endif
+intptr_t gpr_tls_set(struct gpr_pthread_thread_local* tls, intptr_t value);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_PTHREAD_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tmpfile.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tmpfile.h
new file mode 100644
index 0000000..3ce3ff5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/tmpfile.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TMPFILE_H
+#define GRPC_CORE_LIB_GPR_TMPFILE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+/* Creates a temporary file from a prefix.
+   If tmp_filename is not NULL, *tmp_filename is assigned the name of the
+   created file and it is the responsibility of the caller to gpr_free it
+   unless an error occurs in which case it will be set to NULL. */
+FILE* gpr_tmpfile(const char* prefix, char** tmp_filename);
+
+#endif /* GRPC_CORE_LIB_GPR_TMPFILE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/useful.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/useful.h
new file mode 100644
index 0000000..a4e73b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gpr/useful.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_USEFUL_H
+#define GRPC_CORE_LIB_GPR_USEFUL_H
+
+/** useful macros that don't belong anywhere else */
+
+#define GPR_MIN(a, b) ((a) < (b) ? (a) : (b))
+#define GPR_MAX(a, b) ((a) > (b) ? (a) : (b))
+#define GPR_CLAMP(a, min, max) ((a) < (min) ? (min) : (a) > (max) ? (max) : (a))
+/** rotl, rotr assume x is unsigned */
+#define GPR_ROTL(x, n) (((x) << (n)) | ((x) >> (sizeof(x) * 8 - (n))))
+#define GPR_ROTR(x, n) (((x) >> (n)) | ((x) << (sizeof(x) * 8 - (n))))
+
+#define GPR_ARRAY_SIZE(array) (sizeof(array) / sizeof(*(array)))
+
+#define GPR_SWAP(type, a, b) \
+  do {                       \
+    type x = a;              \
+    a = b;                   \
+    b = x;                   \
+  } while (0)
+
+/** Set the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITSET(i, n) ((*(i)) |= (1u << (n)))
+
+/** Clear the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITCLEAR(i, n) ((*(i)) &= ~(1u << (n)))
+
+/** Get the \a n-th bit of \a i */
+#define GPR_BITGET(i, n) (((i) & (1u << (n))) != 0)
+
+#define GPR_INTERNAL_HEXDIGIT_BITCOUNT(x)                        \
+  ((x) - (((x) >> 1) & 0x77777777) - (((x) >> 2) & 0x33333333) - \
+   (((x) >> 3) & 0x11111111))
+
+/** Returns number of bits set in bitset \a i */
+#define GPR_BITCOUNT(i)                          \
+  (((GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) +         \
+     (GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) >> 4)) & \
+    0x0f0f0f0f) %                                \
+   255)
+
+#define GPR_ICMP(a, b) ((a) < (b) ? -1 : ((a) > (b) ? 1 : 0))
+
+#define GPR_HASH_POINTER(x, range) \
+  ((((size_t)x) >> 4) ^ (((size_t)x) >> 9) ^ (((size_t)x) >> 14)) % (range)
+
+#endif /* GRPC_CORE_LIB_GPR_USEFUL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/arena.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/arena.h
new file mode 100644
index 0000000..67c91d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/arena.h	
@@ -0,0 +1,120 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// \file Arena based allocator
+// Allows very fast allocation of memory, but that memory cannot be freed until
+// the arena as a whole is freed
+// Tracks the total memory allocated against it, so that future arenas can
+// pre-allocate the right amount of memory
+
+#ifndef GRPC_CORE_LIB_GPRPP_ARENA_H
+#define GRPC_CORE_LIB_GPRPP_ARENA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <new>
+#include <utility>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gprpp/atomic.h"
+
+#include <stddef.h>
+
+namespace grpc_core {
+
+class Arena {
+ public:
+  // Create an arena, with \a initial_size bytes in the first allocated buffer.
+  static Arena* Create(size_t initial_size);
+
+  // Create an arena, with \a initial_size bytes in the first allocated buffer,
+  // and return both a void pointer to the returned arena and a void* with the
+  // first allocation.
+  static std::pair<Arena*, void*> CreateWithAlloc(size_t initial_size,
+                                                  size_t alloc_size);
+
+  // Destroy an arena, returning the total number of bytes allocated.
+  size_t Destroy();
+  // Allocate \a size bytes from the arena.
+  void* Alloc(size_t size) {
+    static constexpr size_t base_size =
+        GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(Arena));
+    size = GPR_ROUND_UP_TO_ALIGNMENT_SIZE(size);
+    size_t begin = total_used_.FetchAdd(size, MemoryOrder::RELAXED);
+    if (begin + size <= initial_zone_size_) {
+      return reinterpret_cast<char*>(this) + base_size + begin;
+    } else {
+      return AllocZone(size);
+    }
+  }
+
+  // TODO(roth): We currently assume that all callers need alignment of 16
+  // bytes, which may be wrong in some cases. When we have time, we should
+  // change this to instead use the alignment of the type being allocated by
+  // this method.
+  template <typename T, typename... Args>
+  T* New(Args&&... args) {
+    T* t = static_cast<T*>(Alloc(sizeof(T)));
+    new (t) T(std::forward<Args>(args)...);
+    return t;
+  }
+
+ private:
+  struct Zone {
+    Zone* prev;
+  };
+
+  // Initialize an arena.
+  // Parameters:
+  //   initial_size: The initial size of the whole arena in bytes. These bytes
+  //   are contained within 'zone 0'. If the arena user ends up requiring more
+  //   memory than the arena contains in zone 0, subsequent zones are allocated
+  //   on demand and maintained in a tail-linked list.
+  //
+  //   initial_alloc: Optionally, construct the arena as though a call to
+  //   Alloc() had already been made for initial_alloc bytes. This provides a
+  //   quick optimization (avoiding an atomic fetch-add) for the common case
+  //   where we wish to create an arena and then perform an immediate
+  //   allocation.
+  explicit Arena(size_t initial_size, size_t initial_alloc = 0)
+      : total_used_(initial_alloc), initial_zone_size_(initial_size) {}
+
+  ~Arena();
+
+  void* AllocZone(size_t size);
+
+  // Keep track of the total used size. We use this in our call sizing
+  // hysteresis.
+  Atomic<size_t> total_used_;
+  size_t initial_zone_size_;
+  gpr_spinlock arena_growth_spinlock_ = GPR_SPINLOCK_STATIC_INITIALIZER;
+  // If the initial arena allocation wasn't enough, we allocate additional zones
+  // in a reverse linked list. Each additional zone consists of (1) a pointer to
+  // the zone added before this zone (null if this is the first additional zone)
+  // and (2) the allocated memory. The arena itself maintains a pointer to the
+  // last zone; the zone list is reverse-walked during arena destruction only.
+  Zone* last_zone_ = nullptr;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ARENA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/atomic.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/atomic.h
new file mode 100644
index 0000000..095ebf1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/atomic.h	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_ATOMIC_H
+#define GRPC_CORE_LIB_GPRPP_ATOMIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <atomic>
+
+#include <grpc/support/atm.h>
+
+namespace grpc_core {
+
+enum class MemoryOrder {
+  RELAXED = std::memory_order_relaxed,
+  CONSUME = std::memory_order_consume,
+  ACQUIRE = std::memory_order_acquire,
+  RELEASE = std::memory_order_release,
+  ACQ_REL = std::memory_order_acq_rel,
+  SEQ_CST = std::memory_order_seq_cst
+};
+
+template <typename T>
+class Atomic {
+ public:
+  explicit Atomic(T val = T()) : storage_(val) {}
+
+  T Load(MemoryOrder order) const {
+    return storage_.load(static_cast<std::memory_order>(order));
+  }
+
+  void Store(T val, MemoryOrder order) {
+    storage_.store(val, static_cast<std::memory_order>(order));
+  }
+
+  T Exchange(T desired, MemoryOrder order) {
+    return storage_.exchange(desired, static_cast<std::memory_order>(order));
+  }
+
+  bool CompareExchangeWeak(T* expected, T desired, MemoryOrder success,
+                           MemoryOrder failure) {
+    return GPR_ATM_INC_CAS_THEN(storage_.compare_exchange_weak(
+        *expected, desired, static_cast<std::memory_order>(success),
+        static_cast<std::memory_order>(failure)));
+  }
+
+  bool CompareExchangeStrong(T* expected, T desired, MemoryOrder success,
+                             MemoryOrder failure) {
+    return GPR_ATM_INC_CAS_THEN(storage_.compare_exchange_strong(
+        *expected, desired, static_cast<std::memory_order>(success),
+        static_cast<std::memory_order>(failure)));
+  }
+
+  template <typename Arg>
+  T FetchAdd(Arg arg, MemoryOrder order = MemoryOrder::SEQ_CST) {
+    return GPR_ATM_INC_ADD_THEN(storage_.fetch_add(
+        static_cast<Arg>(arg), static_cast<std::memory_order>(order)));
+  }
+
+  template <typename Arg>
+  T FetchSub(Arg arg, MemoryOrder order = MemoryOrder::SEQ_CST) {
+    return GPR_ATM_INC_ADD_THEN(storage_.fetch_sub(
+        static_cast<Arg>(arg), static_cast<std::memory_order>(order)));
+  }
+
+  // Atomically increment a counter only if the counter value is not zero.
+  // Returns true if increment took place; false if counter is zero.
+  bool IncrementIfNonzero(MemoryOrder load_order = MemoryOrder::ACQUIRE) {
+    T count = storage_.load(static_cast<std::memory_order>(load_order));
+    do {
+      // If zero, we are done (without an increment). If not, we must do a CAS
+      // to maintain the contract: do not increment the counter if it is already
+      // zero
+      if (count == 0) {
+        return false;
+      }
+    } while (!CompareExchangeWeak(&count, count + 1, MemoryOrder::ACQ_REL,
+                                  load_order));
+    return true;
+  }
+
+ private:
+  std::atomic<T> storage_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ATOMIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/debug_location.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/debug_location.h
new file mode 100644
index 0000000..d2384fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/debug_location.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H
+#define GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H
+
+namespace grpc_core {
+
+// Used for tracking file and line where a call is made for debug builds.
+// No-op for non-debug builds.
+// Callers can use the DEBUG_LOCATION macro in either case.
+#ifndef NDEBUG
+// TODO(roth): See if there's a way to automatically populate this,
+// similarly to how absl::SourceLocation::current() works, so that
+// callers don't need to explicitly pass DEBUG_LOCATION anywhere.
+class DebugLocation {
+ public:
+  DebugLocation(const char* file, int line) : file_(file), line_(line) {}
+  const char* file() const { return file_; }
+  int line() const { return line_; }
+
+ private:
+  const char* file_;
+  const int line_;
+};
+#define DEBUG_LOCATION ::grpc_core::DebugLocation(__FILE__, __LINE__)
+#else
+class DebugLocation {
+ public:
+  const char* file() const { return nullptr; }
+  int line() const { return -1; }
+};
+#define DEBUG_LOCATION ::grpc_core::DebugLocation()
+#endif
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/fork.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/fork.h
new file mode 100644
index 0000000..3601d7c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/fork.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_FORK_H
+#define GRPC_CORE_LIB_GPRPP_FORK_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+namespace grpc_core {
+
+namespace internal {
+class ExecCtxState;
+class ThreadState;
+}  // namespace internal
+
+class Fork {
+ public:
+  typedef void (*child_postfork_func)(void);
+
+  static void GlobalInit();
+  static void GlobalShutdown();
+
+  // Returns true if fork suppport is enabled, false otherwise
+  static bool Enabled();
+
+  // Increment the count of active ExecCtxs.
+  // Will block until a pending fork is complete if one is in progress.
+  static void IncExecCtxCount() {
+    if (GPR_UNLIKELY(support_enabled_.Load(MemoryOrder::RELAXED))) {
+      DoIncExecCtxCount();
+    }
+  }
+
+  // Decrement the count of active ExecCtxs
+  static void DecExecCtxCount() {
+    if (GPR_UNLIKELY(support_enabled_.Load(MemoryOrder::RELAXED))) {
+      DoDecExecCtxCount();
+    }
+  }
+
+  // Provide a function that will be invoked in the child's postfork handler to
+  // reset the polling engine's internal state.
+  static void SetResetChildPollingEngineFunc(
+      child_postfork_func reset_child_polling_engine);
+  static child_postfork_func GetResetChildPollingEngineFunc();
+
+  // Check if there is a single active ExecCtx
+  // (the one used to invoke this function).  If there are more,
+  // return false.  Otherwise, return true and block creation of
+  // more ExecCtx s until AlloWExecCtx() is called
+  //
+  static bool BlockExecCtx();
+  static void AllowExecCtx();
+
+  // Increment the count of active threads.
+  static void IncThreadCount();
+
+  // Decrement the count of active threads.
+  static void DecThreadCount();
+
+  // Await all core threads to be joined.
+  static void AwaitThreads();
+
+  // Test only: overrides environment variables/compile flags
+  // Must be called before grpc_init()
+  static void Enable(bool enable);
+
+ private:
+  static void DoIncExecCtxCount();
+  static void DoDecExecCtxCount();
+
+  static internal::ExecCtxState* exec_ctx_state_;
+  static internal::ThreadState* thread_state_;
+  static grpc_core::Atomic<bool> support_enabled_;
+  static bool override_enabled_;
+  static child_postfork_func reset_child_polling_engine_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_FORK_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config.h
new file mode 100644
index 0000000..ed986b8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+// --------------------------------------------------------------------
+// How to use global configuration variables:
+//
+// Defining config variables of a specified type:
+//   GPR_GLOBAL_CONFIG_DEFINE_*TYPE*(name, default_value, help);
+//
+// Supported TYPEs: BOOL, INT32, STRING
+//
+// It's recommended to use lowercase letters for 'name' like
+// regular variables. The builtin configuration system uses
+// environment variable and the name is converted to uppercase
+// when looking up the value. For example,
+// GPR_GLOBAL_CONFIG_DEFINE(grpc_latency) looks up the value with the
+// name, "GRPC_LATENCY".
+//
+// The variable initially has the specified 'default_value'
+// which must be an expression convertible to 'Type'.
+// 'default_value' may be evaluated 0 or more times,
+// and at an unspecified time; keep it
+// simple and usually free of side-effects.
+//
+// GPR_GLOBAL_CONFIG_DEFINE_*TYPE* should not be called in a C++ header.
+// It should be called at the top-level (outside any namespaces)
+// in a .cc file.
+//
+// Getting the variables:
+//   GPR_GLOBAL_CONFIG_GET(name)
+//
+// If error happens during getting variables, error messages will
+// be logged and default value will be returned.
+//
+// Setting the variables with new value:
+//   GPR_GLOBAL_CONFIG_SET(name, new_value)
+//
+// Declaring config variables for other modules to access:
+//   GPR_GLOBAL_CONFIG_DECLARE_*TYPE*(name)
+//
+// * Caveat for setting global configs at runtime
+//
+// Setting global configs at runtime multiple times is safe but it doesn't
+// mean that it will have a valid effect on the module depending configs.
+// In unit tests, it may be unpredictable to set different global configs
+// between test cases because grpc init and shutdown can ignore changes.
+// It's considered safe to set global configs before the first call to
+// grpc_init().
+
+// --------------------------------------------------------------------
+// How to customize the global configuration system:
+//
+// How to read and write configuration value can be customized.
+// Builtin system uses environment variables but it can be extended to
+// support command-line flag, file, etc.
+//
+// To customize it, following macros should be redefined.
+//
+//   GPR_GLOBAL_CONFIG_DEFINE_BOOL
+//   GPR_GLOBAL_CONFIG_DEFINE_INT32
+//   GPR_GLOBAL_CONFIG_DEFINE_STRING
+//
+// These macros should define functions for getting and setting variable.
+// For example, GPR_GLOBAL_CONFIG_DEFINE_BOOL(test, ...) would define two
+// functions.
+//
+//   bool gpr_global_config_get_test();
+//   void gpr_global_config_set_test(bool value);
+
+#include "src/core/lib/gprpp/global_config_env.h"
+
+#include "src/core/lib/gprpp/global_config_custom.h"
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_custom.h
new file mode 100644
index 0000000..175677e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_custom.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H
+
+// This is a placeholder for custom global configuration implementation.
+// To use the custom one, please define following macros here.
+//
+//   GPR_GLOBAL_CONFIG_DEFINE_BOOL
+//   GPR_GLOBAL_CONFIG_DEFINE_INT32
+//   GPR_GLOBAL_CONFIG_DEFINE_STRING
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_env.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_env.h
new file mode 100644
index 0000000..b6d7d57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_env.h	
@@ -0,0 +1,131 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config_generic.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+typedef void (*GlobalConfigEnvErrorFunctionType)(const char* error_message);
+
+/*
+ * Set global_config_env_error_function which is called when config system
+ * encounters errors such as parsing error. What the default function does
+ * is logging error message.
+ */
+void SetGlobalConfigEnvErrorFunction(GlobalConfigEnvErrorFunctionType func);
+
+// Base class for all classes to access environment variables.
+class GlobalConfigEnv {
+ protected:
+  // `name` should be writable and alive after constructor is called.
+  constexpr explicit GlobalConfigEnv(char* name) : name_(name) {}
+
+ public:
+  // Returns the value of `name` variable.
+  grpc_core::UniquePtr<char> GetValue();
+
+  // Sets the value of `name` variable.
+  void SetValue(const char* value);
+
+  // Unsets `name` variable.
+  void Unset();
+
+ protected:
+  char* GetName();
+
+ private:
+  char* name_;
+};
+
+class GlobalConfigEnvBool : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvBool(char* name, bool default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  bool Get();
+  void Set(bool value);
+
+ private:
+  bool default_value_;
+};
+
+class GlobalConfigEnvInt32 : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvInt32(char* name, int32_t default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  int32_t Get();
+  void Set(int32_t value);
+
+ private:
+  int32_t default_value_;
+};
+
+class GlobalConfigEnvString : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvString(char* name, const char* default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  grpc_core::UniquePtr<char> Get();
+  void Set(const char* value);
+
+ private:
+  const char* default_value_;
+};
+
+}  // namespace grpc_core
+
+// Macros for defining global config instances using environment variables.
+// This defines a GlobalConfig*Type* instance with arguments for
+// mutable variable name and default value.
+// Mutable name (g_env_str_##name) is here for having an array
+// for the canonical name without dynamic allocation.
+// `help` argument is ignored for this implementation.
+
+#define GPR_GLOBAL_CONFIG_DEFINE_BOOL(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                \
+  static ::grpc_core::GlobalConfigEnvBool g_env_##name(g_env_str_##name, \
+                                                       default_value);   \
+  bool gpr_global_config_get_##name() { return g_env_##name.Get(); }     \
+  void gpr_global_config_set_##name(bool value) { g_env_##name.Set(value); }
+
+#define GPR_GLOBAL_CONFIG_DEFINE_INT32(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                 \
+  static ::grpc_core::GlobalConfigEnvInt32 g_env_##name(g_env_str_##name, \
+                                                        default_value);   \
+  int32_t gpr_global_config_get_##name() { return g_env_##name.Get(); }   \
+  void gpr_global_config_set_##name(int32_t value) { g_env_##name.Set(value); }
+
+#define GPR_GLOBAL_CONFIG_DEFINE_STRING(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                  \
+  static ::grpc_core::GlobalConfigEnvString g_env_##name(g_env_str_##name, \
+                                                         default_value);   \
+  ::grpc_core::UniquePtr<char> gpr_global_config_get_##name() {            \
+    return g_env_##name.Get();                                             \
+  }                                                                        \
+  void gpr_global_config_set_##name(const char* value) {                   \
+    g_env_##name.Set(value);                                               \
+  }
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_generic.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_generic.h
new file mode 100644
index 0000000..d3e3e2a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/global_config_generic.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+#include <stdint.h>
+
+#define GPR_GLOBAL_CONFIG_GET(name) gpr_global_config_get_##name()
+
+#define GPR_GLOBAL_CONFIG_SET(name, value) gpr_global_config_set_##name(value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_BOOL(name)  \
+  extern bool gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(bool value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_INT32(name)    \
+  extern int32_t gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(int32_t value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_STRING(name)                      \
+  extern grpc_core::UniquePtr<char> gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(const char* value)
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/host_port.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/host_port.h
new file mode 100644
index 0000000..c692f99
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/host_port.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_HOST_PORT_H
+#define GRPC_CORE_LIB_GPRPP_HOST_PORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+/** Given a host and port, creates a newly-allocated string of the form
+   "host:port" or "[ho:st]:port", depending on whether the host contains colons
+   like an IPv6 literal.  If the host is already bracketed, then additional
+   brackets will not be added.
+
+   Usage is similar to gpr_asprintf: returns the number of bytes written
+   (excluding the final '\0'), and *out points to a string.
+
+   In the unlikely event of an error, returns -1 and sets *out to NULL. */
+int JoinHostPort(grpc_core::UniquePtr<char>* out, const char* host, int port);
+
+/** Given a name in the form "host:port" or "[ho:st]:port", split into hostname
+   and port number.
+
+   There are two variants of this method:
+   1) StringView output: port and host are returned as views on name.
+   2) char* output: port and host are copied into newly allocated strings.
+
+   Prefer variant (1) over (2), because no allocation or copy is performed in
+   variant (1).  Use (2) only when interacting with C API that mandate
+   null-terminated strings.
+
+   Return true on success, false on failure. Guarantees *host and *port are
+   cleared on failure. */
+bool SplitHostPort(StringView name, StringView* host, StringView* port);
+bool SplitHostPort(StringView name, grpc_core::UniquePtr<char>* host,
+                   grpc_core::UniquePtr<char>* port);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_HOST_PORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/inlined_vector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/inlined_vector.h
new file mode 100644
index 0000000..3cad99d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/inlined_vector.h	
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H
+#define GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cassert>
+#include <cstring>
+
+#include "absl/container/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+template <typename T, size_t N, typename A = std::allocator<T>>
+using InlinedVector = absl::InlinedVector<T, N, A>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/manual_constructor.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/manual_constructor.h
new file mode 100644
index 0000000..7f827ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/manual_constructor.h	
@@ -0,0 +1,213 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MANUAL_CONSTRUCTOR_H
+#define GRPC_CORE_LIB_GPRPP_MANUAL_CONSTRUCTOR_H
+
+// manually construct a region of memory with some type
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include <grpc/support/log.h>
+
+namespace grpc_core {
+
+// this contains templated helpers needed to implement the ManualConstructors
+// in this file.
+namespace manual_ctor_impl {
+
+// is_one_of returns true it a class, Member, is present in a variadic list of
+// classes, List.
+template <class Member, class... List>
+class is_one_of;
+
+template <class Member, class... List>
+class is_one_of<Member, Member, List...> {
+ public:
+  static constexpr const bool value = true;
+};
+
+template <class Member, class A, class... List>
+class is_one_of<Member, A, List...> {
+ public:
+  static constexpr const bool value = is_one_of<Member, List...>::value;
+};
+
+template <class Member>
+class is_one_of<Member> {
+ public:
+  static constexpr const bool value = false;
+};
+
+// max_size_of returns sizeof(Type) for the largest type in the variadic list
+// of classes, Types.
+template <class... Types>
+class max_size_of;
+
+template <class A>
+class max_size_of<A> {
+ public:
+  static constexpr const size_t value = sizeof(A);
+};
+
+template <class A, class... B>
+class max_size_of<A, B...> {
+ public:
+  static constexpr const size_t value = sizeof(A) > max_size_of<B...>::value
+                                            ? sizeof(A)
+                                            : max_size_of<B...>::value;
+};
+
+// max_size_of returns alignof(Type) for the largest type in the variadic list
+// of classes, Types.
+template <class... Types>
+class max_align_of;
+
+template <class A>
+class max_align_of<A> {
+ public:
+  static constexpr const size_t value = alignof(A);
+};
+
+template <class A, class... B>
+class max_align_of<A, B...> {
+ public:
+  static constexpr const size_t value = alignof(A) > max_align_of<B...>::value
+                                            ? alignof(A)
+                                            : max_align_of<B...>::value;
+};
+
+}  // namespace manual_ctor_impl
+
+template <class BaseType, class... DerivedTypes>
+class PolymorphicManualConstructor {
+ public:
+  // No constructor or destructor because one of the most useful uses of
+  // this class is as part of a union, and members of a union could not have
+  // constructors or destructors till C++11.  And, anyway, the whole point of
+  // this class is to bypass constructor and destructor.
+
+  BaseType* get() { return reinterpret_cast<BaseType*>(&space_); }
+  const BaseType* get() const {
+    return reinterpret_cast<const BaseType*>(&space_);
+  }
+
+  BaseType* operator->() { return get(); }
+  const BaseType* operator->() const { return get(); }
+
+  BaseType& operator*() { return *get(); }
+  const BaseType& operator*() const { return *get(); }
+
+  template <class DerivedType>
+  void Init() {
+    FinishInit(new (&space_) DerivedType);
+  }
+
+  // Init() constructs the Type instance using the given arguments
+  // (which are forwarded to Type's constructor).
+  //
+  // Note that Init() with no arguments performs default-initialization,
+  // not zero-initialization (i.e it behaves the same as "new Type;", not
+  // "new Type();"), so it will leave non-class types uninitialized.
+  template <class DerivedType, typename... Ts>
+  void Init(Ts&&... args) {
+    FinishInit(new (&space_) DerivedType(std::forward<Ts>(args)...));
+  }
+
+  // Init() that is equivalent to copy and move construction.
+  // Enables usage like this:
+  //   ManualConstructor<std::vector<int>> v;
+  //   v.Init({1, 2, 3});
+  template <class DerivedType>
+  void Init(const DerivedType& x) {
+    FinishInit(new (&space_) DerivedType(x));
+  }
+  template <class DerivedType>
+  void Init(DerivedType&& x) {
+    FinishInit(new (&space_) DerivedType(std::move(x)));
+  }
+
+  void Destroy() { get()->~BaseType(); }
+
+ private:
+  template <class DerivedType>
+  void FinishInit(DerivedType* p) {
+    static_assert(
+        manual_ctor_impl::is_one_of<DerivedType, DerivedTypes...>::value,
+        "DerivedType must be one of the predeclared DerivedTypes");
+    GPR_ASSERT(static_cast<BaseType*>(p) == p);
+  }
+
+  typename std::aligned_storage<
+      grpc_core::manual_ctor_impl::max_size_of<DerivedTypes...>::value,
+      grpc_core::manual_ctor_impl::max_align_of<DerivedTypes...>::value>::type
+      space_;
+};
+
+template <typename Type>
+class ManualConstructor {
+ public:
+  // No constructor or destructor because one of the most useful uses of
+  // this class is as part of a union, and members of a union could not have
+  // constructors or destructors till C++11.  And, anyway, the whole point of
+  // this class is to bypass constructor and destructor.
+
+  Type* get() { return reinterpret_cast<Type*>(&space_); }
+  const Type* get() const { return reinterpret_cast<const Type*>(&space_); }
+
+  Type* operator->() { return get(); }
+  const Type* operator->() const { return get(); }
+
+  Type& operator*() { return *get(); }
+  const Type& operator*() const { return *get(); }
+
+  void Init() { new (&space_) Type; }
+
+  // Init() constructs the Type instance using the given arguments
+  // (which are forwarded to Type's constructor).
+  //
+  // Note that Init() with no arguments performs default-initialization,
+  // not zero-initialization (i.e it behaves the same as "new Type;", not
+  // "new Type();"), so it will leave non-class types uninitialized.
+  template <typename... Ts>
+  void Init(Ts&&... args) {
+    new (&space_) Type(std::forward<Ts>(args)...);
+  }
+
+  // Init() that is equivalent to copy and move construction.
+  // Enables usage like this:
+  //   ManualConstructor<std::vector<int>> v;
+  //   v.Init({1, 2, 3});
+  void Init(const Type& x) { new (&space_) Type(x); }
+  void Init(Type&& x) { new (&space_) Type(std::move(x)); }
+
+  void Destroy() { get()->~Type(); }
+
+ private:
+  typename std::aligned_storage<sizeof(Type), alignof(Type)>::type space_;
+};
+
+}  // namespace grpc_core
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/map.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/map.h
new file mode 100644
index 0000000..033b861
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/map.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MAP_H
+#define GRPC_CORE_LIB_GPRPP_MAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <map>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+struct StringLess {
+  bool operator()(const char* a, const char* b) const {
+    return strcmp(a, b) < 0;
+  }
+  bool operator()(const grpc_core::UniquePtr<char>& a,
+                  const grpc_core::UniquePtr<char>& b) const {
+    return strcmp(a.get(), b.get()) < 0;
+  }
+  bool operator()(const StringView& a, const StringView& b) const {
+    const size_t min_size = std::min(a.size(), b.size());
+    int c = strncmp(a.data(), b.data(), min_size);
+    if (c != 0) return c < 0;
+    return a.size() < b.size();
+  }
+};
+
+template <typename T>
+struct RefCountedPtrLess {
+  bool operator()(const RefCountedPtr<T>& p1,
+                  const RefCountedPtr<T>& p2) const {
+    return p1.get() < p2.get();
+  }
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/memory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/memory.h
new file mode 100644
index 0000000..4edc9b3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/memory.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MEMORY_H
+#define GRPC_CORE_LIB_GPRPP_MEMORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <limits>
+#include <memory>
+#include <utility>
+
+#include "absl/memory/memory.h"
+
+namespace grpc_core {
+
+class DefaultDeleteChar {
+ public:
+  void operator()(char* p) {
+    if (p == nullptr) return;
+    gpr_free(p);
+  }
+};
+
+// UniquePtr<T> is only allowed for char and UniquePtr<char> is deprecated
+// in favor of std::string. UniquePtr<char> is equivalent std::unique_ptr
+// except that it uses gpr_free for deleter.
+template <typename T>
+using UniquePtr = std::unique_ptr<T, DefaultDeleteChar>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MEMORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/mpscq.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/mpscq.h
new file mode 100644
index 0000000..a1c04ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/mpscq.h	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MPSCQ_H
+#define GRPC_CORE_LIB_GPRPP_MPSCQ_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+
+#include <grpc/support/log.h>
+
+namespace grpc_core {
+
+// Multiple-producer single-consumer lock free queue, based upon the
+// implementation from Dmitry Vyukov here:
+// http://www.1024cores.net/home/lock-free-algorithms/queues/intrusive-mpsc-node-based-queue
+class MultiProducerSingleConsumerQueue {
+ public:
+  // List node.  Application node types can inherit from this.
+  struct Node {
+    Atomic<Node*> next;
+  };
+
+  MultiProducerSingleConsumerQueue() : head_{&stub_}, tail_(&stub_) {}
+  ~MultiProducerSingleConsumerQueue() {
+    GPR_ASSERT(head_.Load(MemoryOrder::RELAXED) == &stub_);
+    GPR_ASSERT(tail_ == &stub_);
+  }
+
+  // Push a node
+  // Thread safe - can be called from multiple threads concurrently
+  // Returns true if this was possibly the first node (may return true
+  // sporadically, will not return false sporadically)
+  bool Push(Node* node);
+  // Pop a node (returns NULL if no node is ready - which doesn't indicate that
+  // the queue is empty!!)
+  // Thread compatible - can only be called from one thread at a time
+  Node* Pop();
+  // Pop a node; sets *empty to true if the queue is empty, or false if it is
+  // not.
+  Node* PopAndCheckEnd(bool* empty);
+
+ private:
+  // make sure head & tail don't share a cacheline
+  union {
+    char padding_[GPR_CACHELINE_SIZE];
+    Atomic<Node*> head_;
+  };
+  Node* tail_;
+  Node stub_;
+};
+
+// An mpscq with a lock: it's safe to pop from multiple threads, but doing
+// only one thread will succeed concurrently.
+class LockedMultiProducerSingleConsumerQueue {
+ public:
+  typedef MultiProducerSingleConsumerQueue::Node Node;
+
+  // Push a node
+  // Thread safe - can be called from multiple threads concurrently
+  // Returns true if this was possibly the first node (may return true
+  // sporadically, will not return false sporadically)
+  bool Push(Node* node);
+
+  // Pop a node (returns NULL if no node is ready - which doesn't indicate that
+  // the queue is empty!!)
+  // Thread safe - can be called from multiple threads concurrently
+  Node* TryPop();
+
+  // Pop a node.  Returns NULL only if the queue was empty at some point after
+  // calling this function
+  Node* Pop();
+
+ private:
+  MultiProducerSingleConsumerQueue queue_;
+  Mutex mu_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MPSCQ_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/optional.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/optional.h
new file mode 100644
index 0000000..f4535bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/optional.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_OPTIONAL_H
+#define GRPC_CORE_LIB_GPRPP_OPTIONAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "absl/types/optional.h"
+
+namespace grpc_core {
+
+template <typename T>
+using Optional = absl::optional<T>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_OPTIONAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/orphanable.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/orphanable.h
new file mode 100644
index 0000000..79542de
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/orphanable.h	
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_ORPHANABLE_H
+#define GRPC_CORE_LIB_GPRPP_ORPHANABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <cinttypes>
+#include <memory>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// A base class for orphanable objects, which have one external owner
+// but are not necessarily destroyed immediately when the external owner
+// gives up ownership.  Instead, the owner calls the object's Orphan()
+// method, and the object then takes responsibility for its own cleanup
+// and destruction.
+class Orphanable {
+ public:
+  // Gives up ownership of the object.  The implementation must arrange
+  // to eventually destroy the object without further interaction from the
+  // caller.
+  virtual void Orphan() = 0;
+
+  // Not copyable or movable.
+  Orphanable(const Orphanable&) = delete;
+  Orphanable& operator=(const Orphanable&) = delete;
+
+ protected:
+  Orphanable() {}
+  virtual ~Orphanable() {}
+};
+
+class OrphanableDelete {
+ public:
+  template <typename T>
+  void operator()(T* p) {
+    p->Orphan();
+  }
+};
+
+template <typename T, typename Deleter = OrphanableDelete>
+using OrphanablePtr = std::unique_ptr<T, Deleter>;
+
+template <typename T, typename... Args>
+inline OrphanablePtr<T> MakeOrphanable(Args&&... args) {
+  return OrphanablePtr<T>(new T(std::forward<Args>(args)...));
+}
+
+// A type of Orphanable with internal ref-counting.
+template <typename Child>
+class InternallyRefCounted : public Orphanable {
+ public:
+  // Not copyable nor movable.
+  InternallyRefCounted(const InternallyRefCounted&) = delete;
+  InternallyRefCounted& operator=(const InternallyRefCounted&) = delete;
+
+ protected:
+  // Allow RefCountedPtr<> to access Unref() and IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  explicit InternallyRefCounted(TraceFlagT* trace_flag = nullptr,
+                                intptr_t initial_refcount = 1)
+      : refs_(initial_refcount, trace_flag) {}
+  virtual ~InternallyRefCounted() = default;
+
+  RefCountedPtr<Child> Ref() GRPC_MUST_USE_RESULT {
+    IncrementRefCount();
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+  RefCountedPtr<Child> Ref(const DebugLocation& location,
+                           const char* reason) GRPC_MUST_USE_RESULT {
+    IncrementRefCount(location, reason);
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete this;
+    }
+  }
+  void Unref(const DebugLocation& location, const char* reason) {
+    if (GPR_UNLIKELY(refs_.Unref(location, reason))) {
+      delete this;
+    }
+  }
+
+ private:
+  void IncrementRefCount() { refs_.Ref(); }
+  void IncrementRefCount(const DebugLocation& location, const char* reason) {
+    refs_.Ref(location, reason);
+  }
+
+  grpc_core::RefCount refs_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ORPHANABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted.h
new file mode 100644
index 0000000..44070e5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted.h	
@@ -0,0 +1,312 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_REF_COUNTED_H
+#define GRPC_CORE_LIB_GPRPP_REF_COUNTED_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <atomic>
+#include <cassert>
+#include <cinttypes>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// PolymorphicRefCount enforces polymorphic destruction of RefCounted.
+class PolymorphicRefCount {
+ public:
+  virtual ~PolymorphicRefCount() = default;
+};
+
+// NonPolymorphicRefCount does not enforce polymorphic destruction of
+// RefCounted. Please refer to grpc_core::RefCounted for more details, and
+// when in doubt use PolymorphicRefCount.
+class NonPolymorphicRefCount {
+ public:
+  ~NonPolymorphicRefCount() = default;
+};
+
+// RefCount is a simple atomic ref-count.
+//
+// This is a C++ implementation of gpr_refcount, with inline functions. Due to
+// inline functions, this class is significantly more efficient than
+// gpr_refcount and should be preferred over gpr_refcount whenever possible.
+//
+// TODO(soheil): Remove gpr_refcount after submitting the GRFC and the paragraph
+//               above.
+class RefCount {
+ public:
+  using Value = intptr_t;
+
+  // `init` is the initial refcount stored in this object.
+  //
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  constexpr explicit RefCount(
+      Value init = 1,
+      TraceFlagT*
+#ifndef NDEBUG
+          // Leave unnamed if NDEBUG to avoid unused parameter warning
+          trace_flag
+#endif
+      = nullptr)
+      :
+#ifndef NDEBUG
+        trace_flag_(trace_flag),
+#endif
+        value_(init) {
+  }
+
+  // Increases the ref-count by `n`.
+  void Ref(Value n = 1) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(n, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p ref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + n);
+    }
+#else
+    value_.FetchAdd(n, MemoryOrder::RELAXED);
+#endif
+  }
+  void Ref(const DebugLocation& location, const char* reason, Value n = 1) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(n, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d ref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + n, reason);
+    }
+#else
+    // Use conditionally-important parameters
+    (void)location;
+    (void)reason;
+
+    value_.FetchAdd(n, MemoryOrder::RELAXED);
+#endif
+  }
+
+  // Similar to Ref() with an assert on the ref-count being non-zero.
+  void RefNonZero() {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(1, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p ref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + 1);
+    }
+    assert(prior > 0);
+#else
+    value_.FetchAdd(1, MemoryOrder::RELAXED);
+#endif
+  }
+  void RefNonZero(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(1, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d ref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + 1, reason);
+    }
+    assert(prior > 0);
+#else
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+    RefNonZero();
+#endif
+  }
+
+  bool RefIfNonZero() {
+#ifndef NDEBUG
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      const Value prior = get();
+      gpr_log(GPR_INFO, "%s:%p ref_if_non_zero %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + 1);
+    }
+#endif
+    return value_.IncrementIfNonzero();
+  }
+  bool RefIfNonZero(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      const Value prior = get();
+      gpr_log(GPR_INFO,
+              "%s:%p %s:%d ref_if_non_zero "
+              "%" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + 1, reason);
+    }
+#endif
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+    return value_.IncrementIfNonzero();
+  }
+
+  // Decrements the ref-count and returns true if the ref-count reaches 0.
+  bool Unref() {
+#ifndef NDEBUG
+    // Grab a copy of the trace flag before the atomic change, since we
+    // can't safely access it afterwards if we're going to be freed.
+    auto* trace_flag = trace_flag_;
+#endif
+    const Value prior = value_.FetchSub(1, MemoryOrder::ACQ_REL);
+#ifndef NDEBUG
+    if (trace_flag != nullptr && trace_flag->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p unref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag->name(), this, prior, prior - 1);
+    }
+    GPR_DEBUG_ASSERT(prior > 0);
+#endif
+    return prior == 1;
+  }
+  bool Unref(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    // Grab a copy of the trace flag before the atomic change, since we
+    // can't safely access it afterwards if we're going to be freed.
+    auto* trace_flag = trace_flag_;
+#endif
+    const Value prior = value_.FetchSub(1, MemoryOrder::ACQ_REL);
+#ifndef NDEBUG
+    if (trace_flag != nullptr && trace_flag->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d unref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag->name(), this, location.file(), location.line(), prior,
+              prior - 1, reason);
+    }
+    GPR_DEBUG_ASSERT(prior > 0);
+#else
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+#endif
+    return prior == 1;
+  }
+
+ private:
+  Value get() const { return value_.Load(MemoryOrder::RELAXED); }
+
+#ifndef NDEBUG
+  TraceFlag* trace_flag_;
+#endif
+  Atomic<Value> value_;
+};
+
+// A base class for reference-counted objects.
+// New objects should be created via New() and start with a refcount of 1.
+// When the refcount reaches 0, the object will be deleted via delete .
+//
+// This will commonly be used by CRTP (curiously-recurring template pattern)
+// e.g., class MyClass : public RefCounted<MyClass>
+//
+// Use PolymorphicRefCount and NonPolymorphicRefCount to select between
+// different implementations of RefCounted.
+//
+// Note that NonPolymorphicRefCount does not support polymorphic destruction.
+// So, use NonPolymorphicRefCount only when both of the following conditions
+// are guaranteed to hold:
+// (a) Child is a concrete leaf class in RefCounted<Child>, and
+// (b) you are guaranteed to call Unref only on concrete leaf classes and not
+//     their parents.
+//
+// The following example is illegal, because calling Unref() will not call
+// the dtor of Child.
+//
+//    class Parent : public RefCounted<Parent, NonPolymorphicRefCount> {}
+//    class Child : public Parent {}
+//
+//    Child* ch;
+//    ch->Unref();
+//
+template <typename Child, typename Impl = PolymorphicRefCount>
+class RefCounted : public Impl {
+ public:
+  // Note: Depending on the Impl used, this dtor can be implicitly virtual.
+  ~RefCounted() = default;
+
+  RefCountedPtr<Child> Ref() GRPC_MUST_USE_RESULT {
+    IncrementRefCount();
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  RefCountedPtr<Child> Ref(const DebugLocation& location,
+                           const char* reason) GRPC_MUST_USE_RESULT {
+    IncrementRefCount(location, reason);
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  // TODO(roth): Once all of our code is converted to C++ and can use
+  // RefCountedPtr<> instead of manual ref-counting, make this method
+  // private, since it will only be used by RefCountedPtr<>, which is a
+  // friend of this class.
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete static_cast<Child*>(this);
+    }
+  }
+  void Unref(const DebugLocation& location, const char* reason) {
+    if (GPR_UNLIKELY(refs_.Unref(location, reason))) {
+      delete static_cast<Child*>(this);
+    }
+  }
+
+  bool RefIfNonZero() { return refs_.RefIfNonZero(); }
+  bool RefIfNonZero(const DebugLocation& location, const char* reason) {
+    return refs_.RefIfNonZero(location, reason);
+  }
+
+  // Not copyable nor movable.
+  RefCounted(const RefCounted&) = delete;
+  RefCounted& operator=(const RefCounted&) = delete;
+
+ protected:
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  explicit RefCounted(TraceFlagT* trace_flag = nullptr,
+                      intptr_t initial_refcount = 1)
+      : refs_(initial_refcount, trace_flag) {}
+
+ private:
+  // Allow RefCountedPtr<> to access IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  void IncrementRefCount() { refs_.Ref(); }
+  void IncrementRefCount(const DebugLocation& location, const char* reason) {
+    refs_.Ref(location, reason);
+  }
+
+  RefCount refs_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_REF_COUNTED_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted_ptr.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted_ptr.h
new file mode 100644
index 0000000..4c5b465
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/ref_counted_ptr.h	
@@ -0,0 +1,187 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H
+#define GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <type_traits>
+#include <utility>
+
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+// A smart pointer class for objects that provide IncrementRefCount() and
+// Unref() methods, such as those provided by the RefCounted base class.
+template <typename T>
+class RefCountedPtr {
+ public:
+  RefCountedPtr() {}
+  RefCountedPtr(std::nullptr_t) {}
+
+  // If value is non-null, we take ownership of a ref to it.
+  template <typename Y>
+  explicit RefCountedPtr(Y* value) {
+    value_ = value;
+  }
+
+  // Move ctors.
+  RefCountedPtr(RefCountedPtr&& other) {
+    value_ = other.value_;
+    other.value_ = nullptr;
+  }
+  template <typename Y>
+  RefCountedPtr(RefCountedPtr<Y>&& other) {
+    value_ = static_cast<T*>(other.value_);
+    other.value_ = nullptr;
+  }
+
+  // Move assignment.
+  RefCountedPtr& operator=(RefCountedPtr&& other) {
+    reset(other.value_);
+    other.value_ = nullptr;
+    return *this;
+  }
+  template <typename Y>
+  RefCountedPtr& operator=(RefCountedPtr<Y>&& other) {
+    reset(other.value_);
+    other.value_ = nullptr;
+    return *this;
+  }
+
+  // Copy ctors.
+  RefCountedPtr(const RefCountedPtr& other) {
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    value_ = other.value_;
+  }
+  template <typename Y>
+  RefCountedPtr(const RefCountedPtr<Y>& other) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    value_ = static_cast<T*>(other.value_);
+  }
+
+  // Copy assignment.
+  RefCountedPtr& operator=(const RefCountedPtr& other) {
+    // Note: Order of reffing and unreffing is important here in case value_
+    // and other.value_ are the same object.
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    reset(other.value_);
+    return *this;
+  }
+  template <typename Y>
+  RefCountedPtr& operator=(const RefCountedPtr<Y>& other) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    // Note: Order of reffing and unreffing is important here in case value_
+    // and other.value_ are the same object.
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    reset(other.value_);
+    return *this;
+  }
+
+  ~RefCountedPtr() {
+    if (value_ != nullptr) value_->Unref();
+  }
+
+  void swap(RefCountedPtr& other) { std::swap(value_, other.value_); }
+
+  // If value is non-null, we take ownership of a ref to it.
+  void reset(T* value = nullptr) {
+    if (value_ != nullptr) value_->Unref();
+    value_ = value;
+  }
+  void reset(const DebugLocation& location, const char* reason,
+             T* value = nullptr) {
+    if (value_ != nullptr) value_->Unref(location, reason);
+    value_ = value;
+  }
+  template <typename Y>
+  void reset(Y* value = nullptr) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (value_ != nullptr) value_->Unref();
+    value_ = static_cast<T*>(value);
+  }
+  template <typename Y>
+  void reset(const DebugLocation& location, const char* reason,
+             Y* value = nullptr) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (value_ != nullptr) value_->Unref(location, reason);
+    value_ = static_cast<T*>(value);
+  }
+
+  // TODO(roth): This method exists solely as a transition mechanism to allow
+  // us to pass a ref to idiomatic C code that does not use RefCountedPtr<>.
+  // Once all of our code has been converted to idiomatic C++, this
+  // method should go away.
+  T* release() {
+    T* value = value_;
+    value_ = nullptr;
+    return value;
+  }
+
+  T* get() const { return value_; }
+
+  T& operator*() const { return *value_; }
+  T* operator->() const { return value_; }
+
+  template <typename Y>
+  bool operator==(const RefCountedPtr<Y>& other) const {
+    return value_ == other.value_;
+  }
+
+  template <typename Y>
+  bool operator==(const Y* other) const {
+    return value_ == other;
+  }
+
+  bool operator==(std::nullptr_t) const { return value_ == nullptr; }
+
+  template <typename Y>
+  bool operator!=(const RefCountedPtr<Y>& other) const {
+    return value_ != other.value_;
+  }
+
+  template <typename Y>
+  bool operator!=(const Y* other) const {
+    return value_ != other;
+  }
+
+  bool operator!=(std::nullptr_t) const { return value_ != nullptr; }
+
+ private:
+  template <typename Y>
+  friend class RefCountedPtr;
+
+  T* value_ = nullptr;
+};
+
+template <typename T, typename... Args>
+inline RefCountedPtr<T> MakeRefCounted(Args&&... args) {
+  return RefCountedPtr<T>(new T(std::forward<Args>(args)...));
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/string_view.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/string_view.h
new file mode 100644
index 0000000..bd4724b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/string_view.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPC_CORE_LIB_GPRPP_STRING_VIEW_H
+#define GRPC_CORE_LIB_GPRPP_STRING_VIEW_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <algorithm>
+#include <cstdint>
+#include <cstring>
+#include <limits>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+using StringView = absl::string_view;
+
+// Converts grpc_slice to StringView.
+inline absl::string_view StringViewFromSlice(const grpc_slice& slice) {
+  return absl::string_view(
+      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(slice)),
+      GRPC_SLICE_LENGTH(slice));
+}
+
+// Creates a dup of the string viewed by this class.
+// Return value is null-terminated and never nullptr.
+inline grpc_core::UniquePtr<char> StringViewToCString(const StringView sv) {
+  char* str = static_cast<char*>(gpr_malloc(sv.size() + 1));
+  if (sv.size() > 0) memcpy(str, sv.data(), sv.size());
+  str[sv.size()] = '\0';
+  return grpc_core::UniquePtr<char>(str);
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_STRING_VIEW_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/sync.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/sync.h
new file mode 100644
index 0000000..0a911b1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/sync.h	
@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_SYNC_H
+#define GRPC_CORE_LIB_GPRPP_SYNC_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/log.h>
+#include <grpc/impl/codegen/sync.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+// The core library is not accessible in C++ codegen headers, and vice versa.
+// Thus, we need to have duplicate headers with similar functionality.
+// Make sure any change to this file is also reflected in
+// include/grpcpp/impl/codegen/sync.h.
+//
+// Whenever possible, prefer using this file over <grpcpp/impl/codegen/sync.h>
+// since this file doesn't rely on g_core_codegen_interface and hence does not
+// pay the costs of virtual function calls.
+
+namespace grpc_core {
+
+class Mutex {
+ public:
+  Mutex() { gpr_mu_init(&mu_); }
+  ~Mutex() { gpr_mu_destroy(&mu_); }
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+
+  gpr_mu* get() { return &mu_; }
+  const gpr_mu* get() const { return &mu_; }
+
+ private:
+  gpr_mu mu_;
+};
+
+// MutexLock is a std::
+class MutexLock {
+ public:
+  explicit MutexLock(Mutex* mu) : mu_(mu->get()) { gpr_mu_lock(mu_); }
+  explicit MutexLock(gpr_mu* mu) : mu_(mu) { gpr_mu_lock(mu_); }
+  ~MutexLock() { gpr_mu_unlock(mu_); }
+
+  MutexLock(const MutexLock&) = delete;
+  MutexLock& operator=(const MutexLock&) = delete;
+
+ private:
+  gpr_mu* const mu_;
+};
+
+class ReleasableMutexLock {
+ public:
+  explicit ReleasableMutexLock(Mutex* mu) : mu_(mu->get()) { gpr_mu_lock(mu_); }
+  explicit ReleasableMutexLock(gpr_mu* mu) : mu_(mu) { gpr_mu_lock(mu_); }
+  ~ReleasableMutexLock() {
+    if (!released_) gpr_mu_unlock(mu_);
+  }
+
+  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
+
+  void Lock() {
+    GPR_DEBUG_ASSERT(released_);
+    gpr_mu_lock(mu_);
+    released_ = false;
+  }
+
+  void Unlock() {
+    GPR_DEBUG_ASSERT(!released_);
+    released_ = true;
+    gpr_mu_unlock(mu_);
+  }
+
+ private:
+  gpr_mu* const mu_;
+  bool released_ = false;
+};
+
+class CondVar {
+ public:
+  CondVar() { gpr_cv_init(&cv_); }
+  ~CondVar() { gpr_cv_destroy(&cv_); }
+
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+
+  void Signal() { gpr_cv_signal(&cv_); }
+  void Broadcast() { gpr_cv_broadcast(&cv_); }
+
+  int Wait(Mutex* mu) { return Wait(mu, gpr_inf_future(GPR_CLOCK_REALTIME)); }
+  int Wait(Mutex* mu, const gpr_timespec& deadline) {
+    return gpr_cv_wait(&cv_, mu->get(), deadline);
+  }
+
+  template <typename Predicate>
+  void WaitUntil(Mutex* mu, Predicate pred) {
+    while (!pred()) {
+      Wait(mu, gpr_inf_future(GPR_CLOCK_REALTIME));
+    }
+  }
+
+  // Returns true iff we timed-out
+  template <typename Predicate>
+  bool WaitUntil(Mutex* mu, Predicate pred, const gpr_timespec& deadline) {
+    while (!pred()) {
+      if (Wait(mu, deadline)) return true;
+    }
+    return false;
+  }
+
+ private:
+  gpr_cv cv_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/thd.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/thd.h
new file mode 100644
index 0000000..8e50f54
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/gprpp/thd.h	
@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_THD_H
+#define GRPC_CORE_LIB_GPRPP_THD_H
+
+/** Internal thread interface. */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd_id.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+namespace internal {
+
+/// Base class for platform-specific thread-state
+class ThreadInternalsInterface {
+ public:
+  virtual ~ThreadInternalsInterface() {}
+  virtual void Start() = 0;
+  virtual void Join() = 0;
+};
+
+}  // namespace internal
+
+class Thread {
+ public:
+  class Options {
+   public:
+    Options() : joinable_(true), tracked_(true), stack_size_(0) {}
+    /// Set whether the thread is joinable or detached.
+    Options& set_joinable(bool joinable) {
+      joinable_ = joinable;
+      return *this;
+    }
+    bool joinable() const { return joinable_; }
+
+    /// Set whether the thread is tracked for fork support.
+    Options& set_tracked(bool tracked) {
+      tracked_ = tracked;
+      return *this;
+    }
+    bool tracked() const { return tracked_; }
+
+    /// Sets thread stack size (in bytes). Sets to 0 will use the default stack
+    /// size which is 64KB for Windows threads and 2MB for Posix(x86) threads.
+    Options& set_stack_size(size_t bytes) {
+      stack_size_ = bytes;
+      return *this;
+    }
+    size_t stack_size() const { return stack_size_; }
+
+   private:
+    bool joinable_;
+    bool tracked_;
+    size_t stack_size_;
+  };
+  /// Default constructor only to allow use in structs that lack constructors
+  /// Does not produce a validly-constructed thread; must later
+  /// use placement new to construct a real thread. Does not init mu_ and cv_
+  Thread() : state_(FAKE), impl_(nullptr) {}
+
+  /// Normal constructor to create a thread with name \a thd_name,
+  /// which will execute a thread based on function \a thd_body
+  /// with argument \a arg once it is started.
+  /// The optional \a success argument indicates whether the thread
+  /// is successfully created.
+  /// The optional \a options can be used to set the thread detachable.
+  Thread(const char* thd_name, void (*thd_body)(void* arg), void* arg,
+         bool* success = nullptr, const Options& options = Options());
+
+  /// Move constructor for thread. After this is called, the other thread
+  /// no longer represents a living thread object
+  Thread(Thread&& other)
+      : state_(other.state_), impl_(other.impl_), options_(other.options_) {
+    other.state_ = MOVED;
+    other.impl_ = nullptr;
+    other.options_ = Options();
+  }
+
+  /// Move assignment operator for thread. After this is called, the other
+  /// thread no longer represents a living thread object. Not allowed if this
+  /// thread actually exists
+  Thread& operator=(Thread&& other) {
+    if (this != &other) {
+      // TODO(vjpai): if we can be sure that all Thread's are actually
+      // constructed, then we should assert GPR_ASSERT(impl_ == nullptr) here.
+      // However, as long as threads come in structures that are
+      // allocated via gpr_malloc, this will not be the case, so we cannot
+      // assert it for the time being.
+      state_ = other.state_;
+      impl_ = other.impl_;
+      options_ = other.options_;
+      other.state_ = MOVED;
+      other.impl_ = nullptr;
+      other.options_ = Options();
+    }
+    return *this;
+  }
+
+  /// The destructor is strictly optional; either the thread never came to life
+  /// and the constructor itself killed it, or it has already been joined and
+  /// the Join function kills it, or it was detached (non-joinable) and it has
+  /// run to completion and is now killing itself. The destructor shouldn't have
+  /// to do anything.
+  ~Thread() { GPR_ASSERT(!options_.joinable() || impl_ == nullptr); }
+
+  void Start() {
+    if (impl_ != nullptr) {
+      GPR_ASSERT(state_ == ALIVE);
+      state_ = STARTED;
+      impl_->Start();
+      // If the Thread is not joinable, then the impl_ will cause the deletion
+      // of this Thread object when the thread function completes. Since no
+      // other operation is allowed to a detached thread after Start, there is
+      // no need to change the value of the impl_ or state_ . The next operation
+      // on this object will be the deletion, which will trigger the destructor.
+    } else {
+      GPR_ASSERT(state_ == FAILED);
+    }
+  }
+
+  // It is only legal to call Join if the Thread is created as joinable.
+  void Join() {
+    if (impl_ != nullptr) {
+      impl_->Join();
+      delete impl_;
+      state_ = DONE;
+      impl_ = nullptr;
+    } else {
+      GPR_ASSERT(state_ == FAILED);
+    }
+  }
+
+ private:
+  Thread(const Thread&) = delete;
+  Thread& operator=(const Thread&) = delete;
+
+  /// The thread states are as follows:
+  /// FAKE -- just a dummy placeholder Thread created by the default constructor
+  /// ALIVE -- an actual thread of control exists associated with this thread
+  /// STARTED -- the thread of control has been started
+  /// DONE -- the thread of control has completed and been joined
+  /// FAILED -- the thread of control never came alive
+  /// MOVED -- contents were moved out and we're no longer tracking them
+  enum ThreadState { FAKE, ALIVE, STARTED, DONE, FAILED, MOVED };
+  ThreadState state_;
+  internal::ThreadInternalsInterface* impl_;
+  Options options_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_THD_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/format_request.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/format_request.h
new file mode 100644
index 0000000..bcc332f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/format_request.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
+#define GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/http/httpcli.h"
+
+grpc_slice grpc_httpcli_format_get_request(const grpc_httpcli_request* request);
+grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request* request,
+                                            const char* body_bytes,
+                                            size_t body_size);
+grpc_slice grpc_httpcli_format_connect_request(
+    const grpc_httpcli_request* request);
+
+#endif /* GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/httpcli.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/httpcli.h
new file mode 100644
index 0000000..b073508
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/httpcli.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_HTTPCLI_H
+#define GRPC_CORE_LIB_HTTP_HTTPCLI_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/time.h>
+
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+/* User agent this library reports */
+#define GRPC_HTTPCLI_USER_AGENT "grpc-httpcli/0.0"
+
+/* Tracks in-progress http requests
+   TODO(ctiller): allow caching and capturing multiple requests for the
+                  same content and combining them */
+typedef struct grpc_httpcli_context {
+  grpc_pollset_set* pollset_set;
+} grpc_httpcli_context;
+
+typedef struct {
+  const char* default_port;
+  void (*handshake)(void* arg, grpc_endpoint* endpoint, const char* host,
+                    grpc_millis deadline,
+                    void (*on_done)(void* arg, grpc_endpoint* endpoint));
+} grpc_httpcli_handshaker;
+
+extern const grpc_httpcli_handshaker grpc_httpcli_plaintext;
+extern const grpc_httpcli_handshaker grpc_httpcli_ssl;
+
+/* A request */
+typedef struct grpc_httpcli_request {
+  /* The host name to connect to */
+  char* host;
+  /* The host to verify in the SSL handshake (or NULL) */
+  char* ssl_host_override;
+  /* The main part of the request
+     The following headers are supplied automatically and MUST NOT be set here:
+     Host, Connection, User-Agent */
+  grpc_http_request http;
+  /* handshaker to use ssl for the request */
+  const grpc_httpcli_handshaker* handshaker;
+} grpc_httpcli_request;
+
+/* Expose the parser response type as a httpcli response too */
+typedef struct grpc_http_response grpc_httpcli_response;
+
+void grpc_httpcli_context_init(grpc_httpcli_context* context);
+void grpc_httpcli_context_destroy(grpc_httpcli_context* context);
+
+/* Asynchronously perform a HTTP GET.
+   'context' specifies the http context under which to do the get
+   'pollset' indicates a grpc_pollset that is interested in the result
+     of the get - work on this pollset may be used to progress the get
+     operation
+   'request' contains request parameters - these are caller owned and can be
+     destroyed once the call returns
+   'deadline' contains a deadline for the request (or gpr_inf_future)
+   'on_response' is a callback to report results to */
+void grpc_httpcli_get(grpc_httpcli_context* context,
+                      grpc_polling_entity* pollent,
+                      grpc_resource_quota* resource_quota,
+                      const grpc_httpcli_request* request, grpc_millis deadline,
+                      grpc_closure* on_complete,
+                      grpc_httpcli_response* response);
+
+/* Asynchronously perform a HTTP POST.
+   'context' specifies the http context under which to do the post
+   'pollset' indicates a grpc_pollset that is interested in the result
+     of the post - work on this pollset may be used to progress the post
+     operation
+   'request' contains request parameters - these are caller owned and can be
+     destroyed once the call returns
+   'body_bytes' and 'body_size' specify the payload for the post.
+     When there is no body, pass in NULL as body_bytes.
+   'deadline' contains a deadline for the request (or gpr_inf_future)
+   'em' points to a caller owned event manager that must be alive for the
+     lifetime of the request
+   'on_response' is a callback to report results to
+   Does not support ?var1=val1&var2=val2 in the path. */
+void grpc_httpcli_post(grpc_httpcli_context* context,
+                       grpc_polling_entity* pollent,
+                       grpc_resource_quota* resource_quota,
+                       const grpc_httpcli_request* request,
+                       const char* body_bytes, size_t body_size,
+                       grpc_millis deadline, grpc_closure* on_complete,
+                       grpc_httpcli_response* response);
+
+/* override functions return 1 if they handled the request, 0 otherwise */
+typedef int (*grpc_httpcli_get_override)(const grpc_httpcli_request* request,
+                                         grpc_millis deadline,
+                                         grpc_closure* on_complete,
+                                         grpc_httpcli_response* response);
+typedef int (*grpc_httpcli_post_override)(const grpc_httpcli_request* request,
+                                          const char* body_bytes,
+                                          size_t body_size,
+                                          grpc_millis deadline,
+                                          grpc_closure* on_complete,
+                                          grpc_httpcli_response* response);
+
+void grpc_httpcli_set_override(grpc_httpcli_get_override get,
+                               grpc_httpcli_post_override post);
+
+#endif /* GRPC_CORE_LIB_HTTP_HTTPCLI_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/parser.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/parser.h
new file mode 100644
index 0000000..b51fd5a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/http/parser.h	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_PARSER_H
+#define GRPC_CORE_LIB_HTTP_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/error.h"
+
+/* Maximum length of a header string of the form 'Key: Value\r\n' */
+#define GRPC_HTTP_PARSER_MAX_HEADER_LENGTH 4096
+
+/* A single header to be passed in a request */
+typedef struct grpc_http_header {
+  char* key;
+  char* value;
+} grpc_http_header;
+
+typedef enum {
+  GRPC_HTTP_FIRST_LINE,
+  GRPC_HTTP_HEADERS,
+  GRPC_HTTP_BODY
+} grpc_http_parser_state;
+
+typedef enum {
+  GRPC_HTTP_HTTP10,
+  GRPC_HTTP_HTTP11,
+  GRPC_HTTP_HTTP20,
+} grpc_http_version;
+
+typedef enum {
+  GRPC_HTTP_RESPONSE,
+  GRPC_HTTP_REQUEST,
+} grpc_http_type;
+
+/* A request */
+typedef struct grpc_http_request {
+  /* Method of the request (e.g. GET, POST) */
+  char* method;
+  /* The path of the resource to fetch */
+  char* path;
+  /* HTTP version to use */
+  grpc_http_version version;
+  /* Headers attached to the request */
+  size_t hdr_count;
+  grpc_http_header* hdrs;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length;
+  char* body;
+} grpc_http_request;
+
+/* A response */
+typedef struct grpc_http_response {
+  /* HTTP status code */
+  int status = 0;
+  /* Headers: count and key/values */
+  size_t hdr_count = 0;
+  grpc_http_header* hdrs = nullptr;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length = 0;
+  char* body = nullptr;
+} grpc_http_response;
+
+typedef struct {
+  grpc_http_parser_state state;
+  grpc_http_type type;
+
+  union {
+    grpc_http_response* response;
+    grpc_http_request* request;
+    void* request_or_response;
+  } http;
+  size_t body_capacity;
+  size_t hdr_capacity;
+
+  uint8_t cur_line[GRPC_HTTP_PARSER_MAX_HEADER_LENGTH];
+  size_t cur_line_length;
+  size_t cur_line_end_length;
+} grpc_http_parser;
+
+void grpc_http_parser_init(grpc_http_parser* parser, grpc_http_type type,
+                           void* request_or_response);
+void grpc_http_parser_destroy(grpc_http_parser* parser);
+
+/* Sets \a start_of_body to the offset in \a slice of the start of the body. */
+grpc_error* grpc_http_parser_parse(grpc_http_parser* parser,
+                                   const grpc_slice& slice,
+                                   size_t* start_of_body);
+grpc_error* grpc_http_parser_eof(grpc_http_parser* parser);
+
+void grpc_http_request_destroy(grpc_http_request* request);
+void grpc_http_response_destroy(grpc_http_response* response);
+
+extern grpc_core::TraceFlag grpc_http1_trace;
+
+#endif /* GRPC_CORE_LIB_HTTP_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/block_annotate.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/block_annotate.h
new file mode 100644
index 0000000..a57873a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/block_annotate.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H
+#define GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H
+
+void gpr_thd_start_blocking_region();
+void gpr_thd_end_blocking_region();
+
+/* These annotations identify the beginning and end of regions where
+   the code may block for reasons other than synchronization functions.
+   These include poll, epoll, and getaddrinfo. */
+
+#ifdef GRPC_SCHEDULING_MARK_BLOCKING_REGION
+#define GRPC_SCHEDULING_START_BLOCKING_REGION \
+  do {                                        \
+    gpr_thd_start_blocking_region();          \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION     \
+  do {                                          \
+    gpr_thd_end_blocking_region();              \
+    grpc_core::ExecCtx::Get()->InvalidateNow(); \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION_NO_EXEC_CTX \
+  do {                                                  \
+    gpr_thd_end_blocking_region();                      \
+  } while (0)
+
+#else
+#define GRPC_SCHEDULING_START_BLOCKING_REGION \
+  do {                                        \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION     \
+  do {                                          \
+    grpc_core::ExecCtx::Get()->InvalidateNow(); \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION_NO_EXEC_CTX \
+  do {                                                  \
+  } while (0)
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/buffer_list.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/buffer_list.h
new file mode 100644
index 0000000..c2552ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/buffer_list.h	
@@ -0,0 +1,164 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H
+#define GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/optional.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/internal_errqueue.h"
+
+namespace grpc_core {
+
+struct ConnectionMetrics {
+  /* Delivery rate in Bytes/s. */
+  Optional<uint64_t> delivery_rate;
+  /* If the delivery rate is limited by the application, this is set to true. */
+  Optional<bool> is_delivery_rate_app_limited;
+  /* Total packets retransmitted. */
+  Optional<uint32_t> packet_retx;
+  /* Total packets retransmitted spuriously. This metric is smaller than or
+  equal to packet_retx. */
+  Optional<uint32_t> packet_spurious_retx;
+  /* Total packets sent. */
+  Optional<uint32_t> packet_sent;
+  /* Total packets delivered. */
+  Optional<uint32_t> packet_delivered;
+  /* Total packets delivered with ECE marked. This metric is smaller than or
+  equal to packet_delivered. */
+  Optional<uint32_t> packet_delivered_ce;
+  /* Total bytes lost so far. */
+  Optional<uint64_t> data_retx;
+  /* Total bytes sent so far. */
+  Optional<uint64_t> data_sent;
+  /* Total bytes in write queue but not sent. */
+  Optional<uint64_t> data_notsent;
+  /* Pacing rate of the connection in Bps */
+  Optional<uint64_t> pacing_rate;
+  /* Minimum RTT observed in usec. */
+  Optional<uint32_t> min_rtt;
+  /* Smoothed RTT in usec */
+  Optional<uint32_t> srtt;
+  /* Send congestion window. */
+  Optional<uint32_t> congestion_window;
+  /* Slow start threshold in packets. */
+  Optional<uint32_t> snd_ssthresh;
+  /* Maximum degree of reordering (i.e., maximum number of packets reodered)
+   on the connection. */
+  Optional<uint32_t> reordering;
+  /* Represents the number of recurring retransmissions of the first sequence
+  that is not acknowledged yet. */
+  Optional<uint8_t> recurring_retrans;
+  /* The cumulative time (in usec) that the transport protocol was busy
+   sending data. */
+  Optional<uint64_t> busy_usec;
+  /* The cumulative time (in usec) that the transport protocol was limited by
+   the receive window size. */
+  Optional<uint64_t> rwnd_limited_usec;
+  /* The cumulative time (in usec) that the transport protocol was limited by
+   the send buffer size. */
+  Optional<uint64_t> sndbuf_limited_usec;
+};
+
+struct Timestamp {
+  gpr_timespec time;
+  ConnectionMetrics metrics; /* Metrics collected with this timestamp */
+};
+
+struct Timestamps {
+  Timestamp sendmsg_time;
+  Timestamp scheduled_time;
+  Timestamp sent_time;
+  Timestamp acked_time;
+
+  uint32_t byte_offset; /* byte offset relative to the start of the RPC */
+
+#ifdef GRPC_LINUX_ERRQUEUE
+  grpc_core::tcp_info info; /* tcp_info collected on sendmsg */
+#endif                      /* GRPC_LINUX_ERRQUEUE */
+};
+
+/** TracedBuffer is a class to keep track of timestamps for a specific buffer in
+ * the TCP layer. We are only tracking timestamps for Linux kernels and hence
+ * this class would only be used by Linux platforms. For all other platforms,
+ * TracedBuffer would be an empty class.
+ *
+ * The timestamps collected are according to grpc_core::Timestamps declared
+ * above.
+ *
+ * A TracedBuffer list is kept track of using the head element of the list. If
+ * the head element of the list is nullptr, then the list is empty.
+ */
+#ifdef GRPC_LINUX_ERRQUEUE
+class TracedBuffer {
+ public:
+  /** Use AddNewEntry function instead of using this directly. */
+  TracedBuffer(uint32_t seq_no, void* arg)
+      : seq_no_(seq_no), arg_(arg), next_(nullptr) {}
+
+  /** Add a new entry in the TracedBuffer list pointed to by head. Also saves
+   * sendmsg_time with the current timestamp. */
+  static void AddNewEntry(grpc_core::TracedBuffer** head, uint32_t seq_no,
+                          int fd, void* arg);
+
+  /** Processes a received timestamp based on sock_extended_err and
+   * scm_timestamping structures. It will invoke the timestamps callback if the
+   * timestamp type is SCM_TSTAMP_ACK. */
+  static void ProcessTimestamp(grpc_core::TracedBuffer** head,
+                               struct sock_extended_err* serr,
+                               struct cmsghdr* opt_stats,
+                               struct scm_timestamping* tss);
+
+  /** Cleans the list by calling the callback for each traced buffer in the list
+   * with timestamps that it has. */
+  static void Shutdown(grpc_core::TracedBuffer** head, void* remaining,
+                       grpc_error* shutdown_err);
+
+ private:
+  uint32_t seq_no_; /* The sequence number for the last byte in the buffer */
+  void* arg_;       /* The arg to pass to timestamps_callback */
+  grpc_core::Timestamps ts_; /* The timestamps corresponding to this buffer */
+  grpc_core::TracedBuffer* next_; /* The next TracedBuffer in the list */
+};
+#else  /* GRPC_LINUX_ERRQUEUE */
+class TracedBuffer {
+ public:
+  /* Dummy shutdown function */
+  static void Shutdown(grpc_core::TracedBuffer** /*head*/, void* /*remaining*/,
+                       grpc_error* shutdown_err) {
+    GRPC_ERROR_UNREF(shutdown_err);
+  }
+};
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+/** Sets the callback function to call when timestamps for a write are
+ *  collected. The callback does not own a reference to error. */
+void grpc_tcp_set_write_timestamps_callback(void (*fn)(void*,
+                                                       grpc_core::Timestamps*,
+                                                       grpc_error* error));
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/call_combiner.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/call_combiner.h
new file mode 100644
index 0000000..d3f43cf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/call_combiner.h	
@@ -0,0 +1,216 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+#define GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/dynamic_annotations.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+// A simple, lock-free mechanism for serializing activity related to a
+// single call.  This is similar to a combiner but is more lightweight.
+//
+// It requires the callback (or, in the common case where the callback
+// actually kicks off a chain of callbacks, the last callback in that
+// chain) to explicitly indicate (by calling GRPC_CALL_COMBINER_STOP())
+// when it is done with the action that was kicked off by the original
+// callback.
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_call_combiner_trace;
+
+class CallCombiner {
+ public:
+  CallCombiner();
+  ~CallCombiner();
+
+#ifndef NDEBUG
+#define GRPC_CALL_COMBINER_START(call_combiner, closure, error, reason) \
+  (call_combiner)->Start((closure), (error), __FILE__, __LINE__, (reason))
+#define GRPC_CALL_COMBINER_STOP(call_combiner, reason) \
+  (call_combiner)->Stop(__FILE__, __LINE__, (reason))
+  /// Starts processing \a closure.
+  void Start(grpc_closure* closure, grpc_error* error, const char* file,
+             int line, const char* reason);
+  /// Yields the call combiner to the next closure in the queue, if any.
+  void Stop(const char* file, int line, const char* reason);
+#else
+#define GRPC_CALL_COMBINER_START(call_combiner, closure, error, reason) \
+  (call_combiner)->Start((closure), (error), (reason))
+#define GRPC_CALL_COMBINER_STOP(call_combiner, reason) \
+  (call_combiner)->Stop((reason))
+  /// Starts processing \a closure.
+  void Start(grpc_closure* closure, grpc_error* error, const char* reason);
+  /// Yields the call combiner to the next closure in the queue, if any.
+  void Stop(const char* reason);
+#endif
+
+  /// Registers \a closure to be invoked when Cancel() is called.
+  ///
+  /// Once a closure is registered, it will always be scheduled exactly
+  /// once; this allows the closure to hold references that will be freed
+  /// regardless of whether or not the call was cancelled.  If a cancellation
+  /// does occur, the closure will be scheduled with the cancellation error;
+  /// otherwise, it will be scheduled with GRPC_ERROR_NONE.
+  ///
+  /// The closure will be scheduled in the following cases:
+  /// - If Cancel() was called prior to registering the closure, it will be
+  ///   scheduled immediately with the cancelation error.
+  /// - If Cancel() is called after registering the closure, the closure will
+  ///   be scheduled with the cancellation error.
+  /// - If SetNotifyOnCancel() is called again to register a new cancellation
+  ///   closure, the previous cancellation closure will be scheduled with
+  ///   GRPC_ERROR_NONE.
+  ///
+  /// If \a closure is NULL, then no closure will be invoked on
+  /// cancellation; this effectively unregisters the previously set closure.
+  /// However, most filters will not need to explicitly unregister their
+  /// callbacks, as this is done automatically when the call is destroyed.
+  /// Filters that schedule the cancellation closure on ExecCtx do not need
+  /// to take a ref on the call stack to guarantee closure liveness. This is
+  /// done by explicitly flushing ExecCtx after the unregistration during
+  /// call destruction.
+  void SetNotifyOnCancel(grpc_closure* closure);
+
+  /// Indicates that the call has been cancelled.
+  void Cancel(grpc_error* error);
+
+ private:
+  void ScheduleClosure(grpc_closure* closure, grpc_error* error);
+#ifdef GRPC_TSAN_ENABLED
+  static void TsanClosure(void* arg, grpc_error* error);
+#endif
+
+  gpr_atm size_ = 0;  // size_t, num closures in queue or currently executing
+  MultiProducerSingleConsumerQueue queue_;
+  // Either 0 (if not cancelled and no cancellation closure set),
+  // a grpc_closure* (if the lowest bit is 0),
+  // or a grpc_error* (if the lowest bit is 1).
+  gpr_atm cancel_state_ = 0;
+#ifdef GRPC_TSAN_ENABLED
+  // A fake ref-counted lock that is kept alive after the destruction of
+  // grpc_call_combiner, when we are running the original closure.
+  //
+  // Ideally we want to lock and unlock the call combiner as a pointer, when the
+  // callback is called. However, original_closure is free to trigger
+  // anything on the call combiner (including destruction of grpc_call).
+  // Thus, we need a ref-counted structure that can outlive the call combiner.
+  struct TsanLock : public RefCounted<TsanLock, NonPolymorphicRefCount> {
+    TsanLock() { TSAN_ANNOTATE_RWLOCK_CREATE(&taken); }
+    ~TsanLock() { TSAN_ANNOTATE_RWLOCK_DESTROY(&taken); }
+    // To avoid double-locking by the same thread, we should acquire/release
+    // the lock only when taken is false. On each acquire taken must be set to
+    // true.
+    std::atomic<bool> taken{false};
+  };
+  RefCountedPtr<TsanLock> tsan_lock_ = MakeRefCounted<TsanLock>();
+  grpc_closure tsan_closure_;
+  grpc_closure* original_closure_;
+#endif
+};
+
+// Helper for running a list of closures in a call combiner.
+//
+// Each callback running in the call combiner will eventually be
+// returned to the surface, at which point the surface will yield the
+// call combiner.  So when we are running in the call combiner and have
+// more than one callback to return to the surface, we need to re-enter
+// the call combiner for all but one of those callbacks.
+class CallCombinerClosureList {
+ public:
+  CallCombinerClosureList() {}
+
+  // Adds a closure to the list.  The closure must eventually result in
+  // the call combiner being yielded.
+  void Add(grpc_closure* closure, grpc_error* error, const char* reason) {
+    closures_.emplace_back(closure, error, reason);
+  }
+
+  // Runs all closures in the call combiner and yields the call combiner.
+  //
+  // All but one of the closures in the list will be scheduled via
+  // GRPC_CALL_COMBINER_START(), and the remaining closure will be
+  // scheduled via ExecCtx::Run(), which will eventually result
+  // in yielding the call combiner.  If the list is empty, then the call
+  // combiner will be yielded immediately.
+  void RunClosures(CallCombiner* call_combiner) {
+    if (closures_.empty()) {
+      GRPC_CALL_COMBINER_STOP(call_combiner, "no closures to schedule");
+      return;
+    }
+    for (size_t i = 1; i < closures_.size(); ++i) {
+      auto& closure = closures_[i];
+      GRPC_CALL_COMBINER_START(call_combiner, closure.closure, closure.error,
+                               closure.reason);
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+      gpr_log(GPR_INFO,
+              "CallCombinerClosureList executing closure while already "
+              "holding call_combiner %p: closure=%p error=%s reason=%s",
+              call_combiner, closures_[0].closure,
+              grpc_error_string(closures_[0].error), closures_[0].reason);
+    }
+    // This will release the call combiner.
+    ExecCtx::Run(DEBUG_LOCATION, closures_[0].closure, closures_[0].error);
+    closures_.clear();
+  }
+
+  // Runs all closures in the call combiner, but does NOT yield the call
+  // combiner.  All closures will be scheduled via GRPC_CALL_COMBINER_START().
+  void RunClosuresWithoutYielding(CallCombiner* call_combiner) {
+    for (size_t i = 0; i < closures_.size(); ++i) {
+      auto& closure = closures_[i];
+      GRPC_CALL_COMBINER_START(call_combiner, closure.closure, closure.error,
+                               closure.reason);
+    }
+    closures_.clear();
+  }
+
+  size_t size() const { return closures_.size(); }
+
+ private:
+  struct CallCombinerClosure {
+    grpc_closure* closure;
+    grpc_error* error;
+    const char* reason;
+
+    CallCombinerClosure(grpc_closure* closure, grpc_error* error,
+                        const char* reason)
+        : closure(closure), error(error), reason(reason) {}
+  };
+
+  // There are generally a maximum of 6 closures to run in the call
+  // combiner, one for each pending op.
+  InlinedVector<CallCombinerClosure, 6> closures_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/cfstream_handle.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/cfstream_handle.h
new file mode 100644
index 0000000..b0f0664
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/cfstream_handle.h	
@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* The CFStream handle acts as an event synchronization entity for
+ * read/write/open/error/eos events happening on CFStream streams. */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H
+#define GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM
+#import <CoreFoundation/CoreFoundation.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/lockfree_event.h"
+
+class GrpcLibraryInitHolder {
+ public:
+  GrpcLibraryInitHolder();
+  virtual ~GrpcLibraryInitHolder();
+};
+
+class CFStreamHandle : public GrpcLibraryInitHolder {
+ public:
+  static CFStreamHandle* CreateStreamHandle(CFReadStreamRef read_stream,
+                                            CFWriteStreamRef write_stream);
+  /** Use CreateStreamHandle function instead of using this directly. */
+  CFStreamHandle(CFReadStreamRef read_stream, CFWriteStreamRef write_stream);
+  CFStreamHandle(const CFStreamHandle& ref) = delete;
+  CFStreamHandle(CFStreamHandle&& ref) = delete;
+  CFStreamHandle& operator=(const CFStreamHandle& rhs) = delete;
+  ~CFStreamHandle() override;
+
+  void NotifyOnOpen(grpc_closure* closure);
+  void NotifyOnRead(grpc_closure* closure);
+  void NotifyOnWrite(grpc_closure* closure);
+  void Shutdown(grpc_error* error);
+
+  void Ref(const char* file = "", int line = 0, const char* reason = nullptr);
+  void Unref(const char* file = "", int line = 0, const char* reason = nullptr);
+
+ private:
+  static void ReadCallback(CFReadStreamRef stream, CFStreamEventType type,
+                           void* client_callback_info);
+  static void WriteCallback(CFWriteStreamRef stream, CFStreamEventType type,
+                            void* client_callback_info);
+  static void* Retain(void* info);
+  static void Release(void* info);
+
+  grpc_core::LockfreeEvent open_event_;
+  grpc_core::LockfreeEvent read_event_;
+  grpc_core::LockfreeEvent write_event_;
+
+  dispatch_queue_t dispatch_queue_;
+
+  gpr_refcount refcount_;
+};
+
+#ifdef DEBUG
+#define CFSTREAM_HANDLE_REF(handle, reason) \
+  (handle)->Ref(__FILE__, __LINE__, (reason))
+#define CFSTREAM_HANDLE_UNREF(handle, reason) \
+  (handle)->Unref(__FILE__, __LINE__, (reason))
+#else
+#define CFSTREAM_HANDLE_REF(handle, reason) (handle)->Ref()
+#define CFSTREAM_HANDLE_UNREF(handle, reason) (handle)->Unref()
+#endif
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/closure.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/closure.h
new file mode 100644
index 0000000..aae932e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/closure.h	
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CLOSURE_H
+#define GRPC_CORE_LIB_IOMGR_CLOSURE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/profiling/timers.h"
+
+struct grpc_closure;
+typedef struct grpc_closure grpc_closure;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_closure;
+
+typedef struct grpc_closure_list {
+  grpc_closure* head;
+  grpc_closure* tail;
+} grpc_closure_list;
+
+/** gRPC Callback definition.
+ *
+ * \param arg Arbitrary input.
+ * \param error GRPC_ERROR_NONE if no error occurred, otherwise some grpc_error
+ *              describing what went wrong.
+ *              Error contract: it is not the cb's job to unref this error;
+ *              the closure scheduler will do that after the cb returns */
+typedef void (*grpc_iomgr_cb_func)(void* arg, grpc_error* error);
+
+/** A closure over a grpc_iomgr_cb_func. */
+struct grpc_closure {
+  /** Once queued, next indicates the next queued closure; before then, scratch
+   *  space */
+  union {
+    grpc_closure* next;
+    grpc_core::ManualConstructor<
+        grpc_core::MultiProducerSingleConsumerQueue::Node>
+        mpscq_node;
+    uintptr_t scratch;
+  } next_data;
+
+  /** Bound callback. */
+  grpc_iomgr_cb_func cb;
+
+  /** Arguments to be passed to "cb". */
+  void* cb_arg;
+
+  /** Once queued, the result of the closure. Before then: scratch space */
+  union {
+    grpc_error* error;
+    uintptr_t scratch;
+  } error_data;
+
+// extra tracing and debugging for grpc_closure. This incurs a decent amount of
+// overhead per closure, so it must be enabled at compile time.
+#ifndef NDEBUG
+  bool scheduled;
+  bool run;  // true = run, false = scheduled
+  const char* file_created;
+  int line_created;
+  const char* file_initiated;
+  int line_initiated;
+#endif
+};
+
+#ifndef NDEBUG
+inline grpc_closure* grpc_closure_init(const char* file, int line,
+                                       grpc_closure* closure,
+                                       grpc_iomgr_cb_func cb, void* cb_arg) {
+#else
+inline grpc_closure* grpc_closure_init(grpc_closure* closure,
+                                       grpc_iomgr_cb_func cb, void* cb_arg) {
+#endif
+  closure->cb = cb;
+  closure->cb_arg = cb_arg;
+  closure->error_data.error = GRPC_ERROR_NONE;
+#ifndef NDEBUG
+  closure->scheduled = false;
+  closure->file_initiated = nullptr;
+  closure->line_initiated = 0;
+  closure->run = false;
+  closure->file_created = file;
+  closure->line_created = line;
+#endif
+  return closure;
+}
+
+/** Initializes \a closure with \a cb and \a cb_arg. Returns \a closure. */
+#ifndef NDEBUG
+#define GRPC_CLOSURE_INIT(closure, cb, cb_arg, scheduler) \
+  grpc_closure_init(__FILE__, __LINE__, closure, cb, cb_arg)
+#else
+#define GRPC_CLOSURE_INIT(closure, cb, cb_arg, scheduler) \
+  grpc_closure_init(closure, cb, cb_arg)
+#endif
+
+namespace closure_impl {
+
+typedef struct {
+  grpc_iomgr_cb_func cb;
+  void* cb_arg;
+  grpc_closure wrapper;
+} wrapped_closure;
+
+inline void closure_wrapper(void* arg, grpc_error* error) {
+  wrapped_closure* wc = static_cast<wrapped_closure*>(arg);
+  grpc_iomgr_cb_func cb = wc->cb;
+  void* cb_arg = wc->cb_arg;
+  gpr_free(wc);
+  cb(cb_arg, error);
+}
+
+}  // namespace closure_impl
+
+#ifndef NDEBUG
+inline grpc_closure* grpc_closure_create(const char* file, int line,
+                                         grpc_iomgr_cb_func cb, void* cb_arg) {
+#else
+inline grpc_closure* grpc_closure_create(grpc_iomgr_cb_func cb, void* cb_arg) {
+#endif
+  closure_impl::wrapped_closure* wc =
+      static_cast<closure_impl::wrapped_closure*>(gpr_malloc(sizeof(*wc)));
+  wc->cb = cb;
+  wc->cb_arg = cb_arg;
+#ifndef NDEBUG
+  grpc_closure_init(file, line, &wc->wrapper, closure_impl::closure_wrapper,
+                    wc);
+#else
+  grpc_closure_init(&wc->wrapper, closure_impl::closure_wrapper, wc);
+#endif
+  return &wc->wrapper;
+}
+
+/* Create a heap allocated closure: try to avoid except for very rare events */
+#ifndef NDEBUG
+#define GRPC_CLOSURE_CREATE(cb, cb_arg, scheduler) \
+  grpc_closure_create(__FILE__, __LINE__, cb, cb_arg)
+#else
+#define GRPC_CLOSURE_CREATE(cb, cb_arg, scheduler) \
+  grpc_closure_create(cb, cb_arg)
+#endif
+
+#define GRPC_CLOSURE_LIST_INIT \
+  { nullptr, nullptr }
+
+inline void grpc_closure_list_init(grpc_closure_list* closure_list) {
+  closure_list->head = closure_list->tail = nullptr;
+}
+
+/** add \a closure to the end of \a list
+    and set \a closure's result to \a error
+    Returns true if \a list becomes non-empty */
+inline bool grpc_closure_list_append(grpc_closure_list* closure_list,
+                                     grpc_closure* closure, grpc_error* error) {
+  if (closure == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return false;
+  }
+  closure->error_data.error = error;
+  closure->next_data.next = nullptr;
+  bool was_empty = (closure_list->head == nullptr);
+  if (was_empty) {
+    closure_list->head = closure;
+  } else {
+    closure_list->tail->next_data.next = closure;
+  }
+  closure_list->tail = closure;
+  return was_empty;
+}
+
+/** force all success bits in \a list to false */
+inline void grpc_closure_list_fail_all(grpc_closure_list* list,
+                                       grpc_error* forced_failure) {
+  for (grpc_closure* c = list->head; c != nullptr; c = c->next_data.next) {
+    if (c->error_data.error == GRPC_ERROR_NONE) {
+      c->error_data.error = GRPC_ERROR_REF(forced_failure);
+    }
+  }
+  GRPC_ERROR_UNREF(forced_failure);
+}
+
+/** append all closures from \a src to \a dst and empty \a src. */
+inline void grpc_closure_list_move(grpc_closure_list* src,
+                                   grpc_closure_list* dst) {
+  if (src->head == nullptr) {
+    return;
+  }
+  if (dst->head == nullptr) {
+    *dst = *src;
+  } else {
+    dst->tail->next_data.next = src->head;
+    dst->tail = src->tail;
+  }
+  src->head = src->tail = nullptr;
+}
+
+/** return whether \a list is empty. */
+inline bool grpc_closure_list_empty(grpc_closure_list closure_list) {
+  return closure_list.head == nullptr;
+}
+
+namespace grpc_core {
+class Closure {
+ public:
+  static void Run(const DebugLocation& location, grpc_closure* closure,
+                  grpc_error* error) {
+    (void)location;
+    if (closure == nullptr) {
+      GRPC_ERROR_UNREF(error);
+      return;
+    }
+#ifndef NDEBUG
+    if (grpc_trace_closure.enabled()) {
+      gpr_log(GPR_DEBUG, "running closure %p: created [%s:%d]: run [%s:%d]",
+              closure, closure->file_created, closure->line_created,
+              location.file(), location.line());
+    }
+    GPR_ASSERT(closure->cb != nullptr);
+#endif
+    closure->cb(closure->cb_arg, error);
+#ifndef NDEBUG
+    if (grpc_trace_closure.enabled()) {
+      gpr_log(GPR_DEBUG, "closure %p finished", closure);
+    }
+#endif
+    GRPC_ERROR_UNREF(error);
+  }
+};
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_CLOSURE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/combiner.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/combiner.h
new file mode 100644
index 0000000..3271206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/combiner.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_COMBINER_H
+#define GRPC_CORE_LIB_IOMGR_COMBINER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+// TODO(yashkt) : Remove this class and replace it with a class that does not
+// use ExecCtx
+class Combiner {
+ public:
+  void Run(grpc_closure* closure, grpc_error* error);
+  // TODO(yashkt) : Remove this method
+  void FinallyRun(grpc_closure* closure, grpc_error* error);
+  Combiner* next_combiner_on_this_exec_ctx = nullptr;
+  MultiProducerSingleConsumerQueue queue;
+  // either:
+  // a pointer to the initiating exec ctx if that is the only exec_ctx that has
+  // ever queued to this combiner, or NULL. If this is non-null, it's not
+  // dereferencable (since the initiating exec_ctx may have gone out of scope)
+  gpr_atm initiating_exec_ctx_or_null;
+  // state is:
+  // lower bit - zero if orphaned (STATE_UNORPHANED)
+  // other bits - number of items queued on the lock (STATE_ELEM_COUNT_LOW_BIT)
+  gpr_atm state;
+  bool time_to_execute_final_list = false;
+  grpc_closure_list final_list;
+  grpc_closure offload;
+  gpr_refcount refs;
+};
+}  // namespace grpc_core
+
+// Provides serialized access to some resource.
+// Each action queued on a combiner is executed serially in a borrowed thread.
+// The actual thread executing actions may change over time (but there will only
+// ever be one at a time).
+
+// Initialize the lock, with an optional workqueue to shift load to when
+// necessary
+grpc_core::Combiner* grpc_combiner_create(void);
+
+#ifndef NDEBUG
+#define GRPC_COMBINER_DEBUG_ARGS \
+  , const char *file, int line, const char *reason
+#define GRPC_COMBINER_REF(combiner, reason) \
+  grpc_combiner_ref((combiner), __FILE__, __LINE__, (reason))
+#define GRPC_COMBINER_UNREF(combiner, reason) \
+  grpc_combiner_unref((combiner), __FILE__, __LINE__, (reason))
+#else
+#define GRPC_COMBINER_DEBUG_ARGS
+#define GRPC_COMBINER_REF(combiner, reason) grpc_combiner_ref((combiner))
+#define GRPC_COMBINER_UNREF(combiner, reason) grpc_combiner_unref((combiner))
+#endif
+
+// Ref/unref the lock, for when we're sharing the lock ownership
+// Prefer to use the macros above
+grpc_core::Combiner* grpc_combiner_ref(
+    grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS);
+void grpc_combiner_unref(grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS);
+
+bool grpc_combiner_continue_exec_ctx();
+
+extern grpc_core::DebugOnlyTraceFlag grpc_combiner_trace;
+
+#endif /* GRPC_CORE_LIB_IOMGR_COMBINER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/dynamic_annotations.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/dynamic_annotations.h
new file mode 100644
index 0000000..7139280
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/dynamic_annotations.h	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H
+#define GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_TSAN_ENABLED
+
+#define TSAN_ANNOTATE_HAPPENS_BEFORE(addr) \
+  AnnotateHappensBefore(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_HAPPENS_AFTER(addr) \
+  AnnotateHappensAfter(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_CREATE(addr) \
+  AnnotateRWLockCreate(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_DESTROY(addr) \
+  AnnotateRWLockDestroy(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_ACQUIRED(addr, is_w) \
+  AnnotateRWLockAcquired(__FILE__, __LINE__, (void*)(addr), (is_w))
+#define TSAN_ANNOTATE_RWLOCK_RELEASED(addr, is_w) \
+  AnnotateRWLockReleased(__FILE__, __LINE__, (void*)(addr), (is_w))
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void AnnotateHappensBefore(const char* file, int line, const volatile void* cv);
+void AnnotateHappensAfter(const char* file, int line, const volatile void* cv);
+void AnnotateRWLockCreate(const char* file, int line,
+                          const volatile void* lock);
+void AnnotateRWLockDestroy(const char* file, int line,
+                           const volatile void* lock);
+void AnnotateRWLockAcquired(const char* file, int line,
+                            const volatile void* lock, long is_w);
+void AnnotateRWLockReleased(const char* file, int line,
+                            const volatile void* lock, long is_w);
+#ifdef __cplusplus
+}
+#endif
+
+#else /* GRPC_TSAN_ENABLED */
+
+#define TSAN_ANNOTATE_HAPPENS_BEFORE(addr)
+#define TSAN_ANNOTATE_HAPPENS_AFTER(addr)
+#define TSAN_ANNOTATE_RWLOCK_CREATE(addr)
+#define TSAN_ANNOTATE_RWLOCK_DESTROY(addr)
+#define TSAN_ANNOTATE_RWLOCK_ACQUIRED(addr, is_w)
+#define TSAN_ANNOTATE_RWLOCK_RELEASED(addr, is_w)
+
+#endif /* GRPC_TSAN_ENABLED */
+
+#endif /* GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint.h
new file mode 100644
index 0000000..932e7e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint.h	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+
+/* An endpoint caps a streaming channel between two communicating processes.
+   Examples may be: a tcp socket, <stdin+stdout>, or some shared memory. */
+
+typedef struct grpc_endpoint grpc_endpoint;
+typedef struct grpc_endpoint_vtable grpc_endpoint_vtable;
+class Timestamps;
+
+struct grpc_endpoint_vtable {
+  void (*read)(grpc_endpoint* ep, grpc_slice_buffer* slices, grpc_closure* cb,
+               bool urgent);
+  void (*write)(grpc_endpoint* ep, grpc_slice_buffer* slices, grpc_closure* cb,
+                void* arg);
+  void (*add_to_pollset)(grpc_endpoint* ep, grpc_pollset* pollset);
+  void (*add_to_pollset_set)(grpc_endpoint* ep, grpc_pollset_set* pollset);
+  void (*delete_from_pollset_set)(grpc_endpoint* ep, grpc_pollset_set* pollset);
+  void (*shutdown)(grpc_endpoint* ep, grpc_error* why);
+  void (*destroy)(grpc_endpoint* ep);
+  grpc_resource_user* (*get_resource_user)(grpc_endpoint* ep);
+  char* (*get_peer)(grpc_endpoint* ep);
+  int (*get_fd)(grpc_endpoint* ep);
+  bool (*can_track_err)(grpc_endpoint* ep);
+};
+
+/* When data is available on the connection, calls the callback with slices.
+   Callback success indicates that the endpoint can accept more reads, failure
+   indicates the endpoint is closed.
+   Valid slices may be placed into \a slices even when the callback is
+   invoked with error != GRPC_ERROR_NONE. */
+void grpc_endpoint_read(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                        grpc_closure* cb, bool urgent);
+
+char* grpc_endpoint_get_peer(grpc_endpoint* ep);
+
+/* Get the file descriptor used by \a ep. Return -1 if \a ep is not using an fd.
+ */
+int grpc_endpoint_get_fd(grpc_endpoint* ep);
+
+/* Write slices out to the socket.
+
+   If the connection is ready for more data after the end of the call, it
+   returns GRPC_ENDPOINT_DONE.
+   Otherwise it returns GRPC_ENDPOINT_PENDING and calls cb when the
+   connection is ready for more data.
+   \a slices may be mutated at will by the endpoint until cb is called.
+   No guarantee is made to the content of slices after a write EXCEPT that
+   it is a valid slice buffer.
+   \a arg is platform specific. It is currently only used by TCP on linux
+   platforms as an argument that would be forwarded to the timestamps callback.
+   */
+void grpc_endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                         grpc_closure* cb, void* arg);
+
+/* Causes any pending and future read/write callbacks to run immediately with
+   success==0 */
+void grpc_endpoint_shutdown(grpc_endpoint* ep, grpc_error* why);
+void grpc_endpoint_destroy(grpc_endpoint* ep);
+
+/* Add an endpoint to a pollset or pollset_set, so that when the pollset is
+   polled, events from this endpoint are considered */
+void grpc_endpoint_add_to_pollset(grpc_endpoint* ep, grpc_pollset* pollset);
+void grpc_endpoint_add_to_pollset_set(grpc_endpoint* ep,
+                                      grpc_pollset_set* pollset_set);
+
+/* Delete an endpoint from a pollset_set */
+void grpc_endpoint_delete_from_pollset_set(grpc_endpoint* ep,
+                                           grpc_pollset_set* pollset_set);
+
+grpc_resource_user* grpc_endpoint_get_resource_user(grpc_endpoint* endpoint);
+
+bool grpc_endpoint_can_track_err(grpc_endpoint* ep);
+
+struct grpc_endpoint {
+  const grpc_endpoint_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_cfstream.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_cfstream.h
new file mode 100644
index 0000000..ef957c1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_cfstream.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_CFSTREAM
+
+#import <CoreFoundation/CoreFoundation.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/cfstream_handle.h"
+#include "src/core/lib/iomgr/endpoint.h"
+
+grpc_endpoint* grpc_cfstream_endpoint_create(
+    CFReadStreamRef read_stream, CFWriteStreamRef write_stream,
+    const char* peer_string, grpc_resource_quota* resource_quota,
+    CFStreamHandle* stream_sync);
+
+#endif /* GRPC_CFSTREAM */
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_pair.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_pair.h
new file mode 100644
index 0000000..08f9e3c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/endpoint_pair.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+
+typedef struct {
+  grpc_endpoint* client;
+  grpc_endpoint* server;
+} grpc_endpoint_pair;
+
+grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char* name,
+                                                   grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error.h
new file mode 100644
index 0000000..5c79aa7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error.h	
@@ -0,0 +1,277 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <grpc/slice.h>
+#include <grpc/status.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+
+/// Opaque representation of an error.
+/// See https://github.com/grpc/grpc/blob/master/doc/core/grpc-error.md for a
+/// full write up of this object.
+
+typedef struct grpc_error grpc_error;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_error_refcount;
+
+typedef enum {
+  /// 'errno' from the operating system
+  GRPC_ERROR_INT_ERRNO,
+  /// __LINE__ from the call site creating the error
+  GRPC_ERROR_INT_FILE_LINE,
+  /// stream identifier: for errors that are associated with an individual
+  /// wire stream
+  GRPC_ERROR_INT_STREAM_ID,
+  /// grpc status code representing this error
+  GRPC_ERROR_INT_GRPC_STATUS,
+  /// offset into some binary blob (usually represented by
+  /// GRPC_ERROR_STR_RAW_BYTES) where the error occurred
+  GRPC_ERROR_INT_OFFSET,
+  /// context sensitive index associated with the error
+  GRPC_ERROR_INT_INDEX,
+  /// context sensitive size associated with the error
+  GRPC_ERROR_INT_SIZE,
+  /// http2 error code associated with the error (see the HTTP2 RFC)
+  GRPC_ERROR_INT_HTTP2_ERROR,
+  /// TSI status code associated with the error
+  GRPC_ERROR_INT_TSI_CODE,
+  /// grpc_security_status associated with the error
+  GRPC_ERROR_INT_SECURITY_STATUS,
+  /// WSAGetLastError() reported when this error occurred
+  GRPC_ERROR_INT_WSA_ERROR,
+  /// File descriptor associated with this error
+  GRPC_ERROR_INT_FD,
+  /// HTTP status (i.e. 404)
+  GRPC_ERROR_INT_HTTP_STATUS,
+  /// context sensitive limit associated with the error
+  GRPC_ERROR_INT_LIMIT,
+  /// chttp2: did the error occur while a write was in progress
+  GRPC_ERROR_INT_OCCURRED_DURING_WRITE,
+  /// channel connectivity state associated with the error
+  GRPC_ERROR_INT_CHANNEL_CONNECTIVITY_STATE,
+
+  /// Must always be last
+  GRPC_ERROR_INT_MAX,
+} grpc_error_ints;
+
+typedef enum {
+  /// top-level textual description of this error
+  GRPC_ERROR_STR_DESCRIPTION,
+  /// source file in which this error occurred
+  GRPC_ERROR_STR_FILE,
+  /// operating system description of this error
+  GRPC_ERROR_STR_OS_ERROR,
+  /// syscall that generated this error
+  GRPC_ERROR_STR_SYSCALL,
+  /// peer that we were trying to communicate when this error occurred
+  GRPC_ERROR_STR_TARGET_ADDRESS,
+  /// grpc status message associated with this error
+  GRPC_ERROR_STR_GRPC_MESSAGE,
+  /// hex dump (or similar) with the data that generated this error
+  GRPC_ERROR_STR_RAW_BYTES,
+  /// tsi error string associated with this error
+  GRPC_ERROR_STR_TSI_ERROR,
+  /// filename that we were trying to read/write when this error occurred
+  GRPC_ERROR_STR_FILENAME,
+  /// which data was queued for writing when the error occurred
+  GRPC_ERROR_STR_QUEUED_BUFFERS,
+  /// key associated with the error
+  GRPC_ERROR_STR_KEY,
+  /// value associated with the error
+  GRPC_ERROR_STR_VALUE,
+
+  /// Must always be last
+  GRPC_ERROR_STR_MAX,
+} grpc_error_strs;
+
+typedef enum {
+  /// timestamp of error creation
+  GRPC_ERROR_TIME_CREATED,
+
+  /// Must always be last
+  GRPC_ERROR_TIME_MAX,
+} grpc_error_times;
+
+/// The following "special" errors can be propagated without allocating memory.
+/// They are always even so that other code (particularly combiner locks,
+/// polling engines) can safely use the lower bit for themselves.
+
+#define GRPC_ERROR_NONE ((grpc_error*)NULL)
+#define GRPC_ERROR_RESERVED_1 ((grpc_error*)1)
+#define GRPC_ERROR_OOM ((grpc_error*)2)
+#define GRPC_ERROR_RESERVED_2 ((grpc_error*)3)
+#define GRPC_ERROR_CANCELLED ((grpc_error*)4)
+#define GRPC_ERROR_SPECIAL_MAX GRPC_ERROR_CANCELLED
+
+inline bool grpc_error_is_special(struct grpc_error* err) {
+  return err <= GRPC_ERROR_SPECIAL_MAX;
+}
+
+// debug only toggles that allow for a sanity to check that ensures we will
+// never create any errors in the per-RPC hotpath.
+void grpc_disable_error_creation();
+void grpc_enable_error_creation();
+
+const char* grpc_error_string(grpc_error* error);
+
+/// Create an error - but use GRPC_ERROR_CREATE instead
+grpc_error* grpc_error_create(const char* file, int line,
+                              const grpc_slice& desc, grpc_error** referencing,
+                              size_t num_referencing);
+/// Create an error (this is the preferred way of generating an error that is
+///   not due to a system call - for system calls, use GRPC_OS_ERROR or
+///   GRPC_WSA_ERROR as appropriate)
+/// \a referencing is an array of num_referencing elements indicating one or
+/// more errors that are believed to have contributed to this one
+/// err = grpc_error_create(x, y, z, r, nr) is equivalent to:
+///   err = grpc_error_create(x, y, z, NULL, 0);
+///   for (i=0; i<nr; i++) err = grpc_error_add_child(err, r[i]);
+#define GRPC_ERROR_CREATE_FROM_STATIC_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    NULL, 0)
+#define GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    NULL, 0)
+
+// Create an error that references some other errors. This function adds a
+// reference to each error in errs - it does not consume an existing reference
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    errs, count)
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    errs, count)
+
+#define GRPC_ERROR_CREATE_FROM_VECTOR(desc, error_list) \
+  grpc_error_create_from_vector(__FILE__, __LINE__, desc, error_list)
+
+#ifndef NDEBUG
+grpc_error* grpc_error_do_ref(grpc_error* err, const char* file, int line);
+void grpc_error_do_unref(grpc_error* err, const char* file, int line);
+inline grpc_error* grpc_error_ref(grpc_error* err, const char* file, int line) {
+  if (grpc_error_is_special(err)) return err;
+  return grpc_error_do_ref(err, file, line);
+}
+inline void grpc_error_unref(grpc_error* err, const char* file, int line) {
+  if (grpc_error_is_special(err)) return;
+  grpc_error_do_unref(err, file, line);
+}
+#define GRPC_ERROR_REF(err) grpc_error_ref(err, __FILE__, __LINE__)
+#define GRPC_ERROR_UNREF(err) grpc_error_unref(err, __FILE__, __LINE__)
+#else
+grpc_error* grpc_error_do_ref(grpc_error* err);
+void grpc_error_do_unref(grpc_error* err);
+inline grpc_error* grpc_error_ref(grpc_error* err) {
+  if (grpc_error_is_special(err)) return err;
+  return grpc_error_do_ref(err);
+}
+inline void grpc_error_unref(grpc_error* err) {
+  if (grpc_error_is_special(err)) return;
+  grpc_error_do_unref(err);
+}
+#define GRPC_ERROR_REF(err) grpc_error_ref(err)
+#define GRPC_ERROR_UNREF(err) grpc_error_unref(err)
+#endif
+
+// Consumes all the errors in the vector and forms a referencing error from
+// them. If the vector is empty, return GRPC_ERROR_NONE.
+template <typename VectorType>
+static grpc_error* grpc_error_create_from_vector(const char* file, int line,
+                                                 const char* desc,
+                                                 VectorType* error_list) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (error_list->size() != 0) {
+    error = grpc_error_create(file, line, grpc_slice_from_static_string(desc),
+                              error_list->data(), error_list->size());
+    // Remove refs to all errors in error_list.
+    for (size_t i = 0; i < error_list->size(); i++) {
+      GRPC_ERROR_UNREF((*error_list)[i]);
+    }
+    error_list->clear();
+  }
+  return error;
+}
+
+grpc_error* grpc_error_set_int(grpc_error* src, grpc_error_ints which,
+                               intptr_t value) GRPC_MUST_USE_RESULT;
+/// It is an error to pass nullptr as `p`. Caller should allocate a dummy
+/// intptr_t for `p`, even if the value of `p` is not used.
+bool grpc_error_get_int(grpc_error* error, grpc_error_ints which, intptr_t* p);
+/// This call takes ownership of the slice; the error is responsible for
+/// eventually unref-ing it.
+grpc_error* grpc_error_set_str(grpc_error* src, grpc_error_strs which,
+                               const grpc_slice& str) GRPC_MUST_USE_RESULT;
+/// Returns false if the specified string is not set.
+/// Caller does NOT own the slice.
+bool grpc_error_get_str(grpc_error* error, grpc_error_strs which,
+                        grpc_slice* s);
+
+/// Add a child error: an error that is believed to have contributed to this
+/// error occurring. Allows root causing high level errors from lower level
+/// errors that contributed to them. The src error takes ownership of the
+/// child error.
+///
+/// Edge Conditions -
+/// 1) If either of \a src or \a child is GRPC_ERROR_NONE, returns a reference
+/// to the other argument. 2) If both \a src and \a child are GRPC_ERROR_NONE,
+/// returns GRPC_ERROR_NONE. 3) If \a src and \a child point to the same error,
+/// returns a single reference. (Note that, 2 references should have been
+/// received to the error in this case.)
+grpc_error* grpc_error_add_child(grpc_error* src,
+                                 grpc_error* child) GRPC_MUST_USE_RESULT;
+
+grpc_error* grpc_os_error(const char* file, int line, int err,
+                          const char* call_name) GRPC_MUST_USE_RESULT;
+
+inline grpc_error* grpc_assert_never_ok(grpc_error* error) {
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  return error;
+}
+
+/// create an error associated with errno!=0 (an 'operating system' error)
+#define GRPC_OS_ERROR(err, call_name) \
+  grpc_assert_never_ok(grpc_os_error(__FILE__, __LINE__, err, call_name))
+grpc_error* grpc_wsa_error(const char* file, int line, int err,
+                           const char* call_name) GRPC_MUST_USE_RESULT;
+/// windows only: create an error associated with WSAGetLastError()!=0
+#define GRPC_WSA_ERROR(err, call_name) \
+  grpc_wsa_error(__FILE__, __LINE__, err, call_name)
+
+bool grpc_log_error(const char* what, grpc_error* error, const char* file,
+                    int line);
+inline bool grpc_log_if_error(const char* what, grpc_error* error,
+                              const char* file, int line) {
+  return error == GRPC_ERROR_NONE ? true
+                                  : grpc_log_error(what, error, file, line);
+}
+
+#define GRPC_LOG_IF_ERROR(what, error) \
+  (grpc_log_if_error((what), (error), __FILE__, __LINE__))
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_cfstream.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_cfstream.h
new file mode 100644
index 0000000..06ab751
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_cfstream.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H
+
+#ifdef GRPC_CFSTREAM
+// Create an error from Apple Core Foundation CFError object
+#define GRPC_ERROR_CREATE_FROM_CFERROR(error, desc)  \
+  grpc_error_create_from_cferror(__FILE__, __LINE__, \
+                                 static_cast<void*>((error)), (desc))
+grpc_error* grpc_error_create_from_cferror(const char* file, int line,
+                                           void* arg, const char* desc);
+#endif /* GRPC_CFSTREAM */
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_internal.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_internal.h
new file mode 100644
index 0000000..7b0cbd6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/error_internal.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>  // TODO, do we need this?
+
+#include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/error.h"
+
+typedef struct grpc_linked_error grpc_linked_error;
+
+struct grpc_linked_error {
+  grpc_error* err;
+  uint8_t next;
+};
+
+// c core representation of an error. See error.h for high level description of
+// this object.
+struct grpc_error {
+  // All atomics in grpc_error must be stored in this nested struct. The rest of
+  // the object is memcpy-ed in bulk in copy_and_unref.
+  struct atomics {
+    gpr_refcount refs;
+    gpr_atm error_string;
+  } atomics;
+  // These arrays index into dynamic arena at the bottom of the struct.
+  // UINT8_MAX is used as a sentinel value.
+  uint8_t ints[GRPC_ERROR_INT_MAX];
+  uint8_t strs[GRPC_ERROR_STR_MAX];
+  uint8_t times[GRPC_ERROR_TIME_MAX];
+  // The child errors are stored in the arena, but are effectively a linked list
+  // structure, since they are contained within grpc_linked_error objects.
+  uint8_t first_err;
+  uint8_t last_err;
+  // The arena is dynamically reallocated with a grow factor of 1.5.
+  uint8_t arena_size;
+  uint8_t arena_capacity;
+  intptr_t arena[0];
+};
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epoll1_linux.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epoll1_linux.h
new file mode 100644
index 0000000..ca0db72
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epoll1_linux.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H
+#define GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/port.h"
+
+// a polling engine that utilizes a singleton epoll set and turnstile polling
+
+const grpc_event_engine_vtable* grpc_init_epoll1_linux(bool explicit_request);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epollex_linux.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epollex_linux.h
new file mode 100644
index 0000000..e70ba72
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_epollex_linux.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H
+#define GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/port.h"
+
+const grpc_event_engine_vtable* grpc_init_epollex_linux(
+    bool explicitly_requested);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_poll_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_poll_posix.h
new file mode 100644
index 0000000..ab3cd90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_poll_posix.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+
+const grpc_event_engine_vtable* grpc_init_poll_posix(bool explicit_request);
+const grpc_event_engine_vtable* grpc_init_poll_cv_posix(bool explicit_request);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_posix.h
new file mode 100644
index 0000000..84edabc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/ev_posix.h	
@@ -0,0 +1,207 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_EV_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <poll.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_poll_strategy);
+
+extern grpc_core::DebugOnlyTraceFlag grpc_fd_trace; /* Disabled by default */
+extern grpc_core::DebugOnlyTraceFlag
+    grpc_polling_trace; /* Disabled by default */
+
+#define GRPC_FD_TRACE(format, ...)                        \
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_fd_trace)) {           \
+    gpr_log(GPR_INFO, "(fd-trace) " format, __VA_ARGS__); \
+  }
+
+typedef struct grpc_fd grpc_fd;
+
+typedef struct grpc_event_engine_vtable {
+  size_t pollset_size;
+  bool can_track_err;
+  bool run_in_background;
+
+  grpc_fd* (*fd_create)(int fd, const char* name, bool track_err);
+  int (*fd_wrapped_fd)(grpc_fd* fd);
+  void (*fd_orphan)(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                    const char* reason);
+  void (*fd_shutdown)(grpc_fd* fd, grpc_error* why);
+  void (*fd_notify_on_read)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_notify_on_write)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_notify_on_error)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_set_readable)(grpc_fd* fd);
+  void (*fd_set_writable)(grpc_fd* fd);
+  void (*fd_set_error)(grpc_fd* fd);
+  bool (*fd_is_shutdown)(grpc_fd* fd);
+
+  void (*pollset_init)(grpc_pollset* pollset, gpr_mu** mu);
+  void (*pollset_shutdown)(grpc_pollset* pollset, grpc_closure* closure);
+  void (*pollset_destroy)(grpc_pollset* pollset);
+  grpc_error* (*pollset_work)(grpc_pollset* pollset,
+                              grpc_pollset_worker** worker,
+                              grpc_millis deadline);
+  grpc_error* (*pollset_kick)(grpc_pollset* pollset,
+                              grpc_pollset_worker* specific_worker);
+  void (*pollset_add_fd)(grpc_pollset* pollset, struct grpc_fd* fd);
+
+  grpc_pollset_set* (*pollset_set_create)(void);
+  void (*pollset_set_destroy)(grpc_pollset_set* pollset_set);
+  void (*pollset_set_add_pollset)(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+  void (*pollset_set_del_pollset)(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+  void (*pollset_set_add_pollset_set)(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+  void (*pollset_set_del_pollset_set)(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+  void (*pollset_set_add_fd)(grpc_pollset_set* pollset_set, grpc_fd* fd);
+  void (*pollset_set_del_fd)(grpc_pollset_set* pollset_set, grpc_fd* fd);
+
+  bool (*is_any_background_poller_thread)(void);
+  void (*shutdown_background_closure)(void);
+  void (*shutdown_engine)(void);
+  bool (*add_closure_to_background_poller)(grpc_closure* closure,
+                                           grpc_error* error);
+} grpc_event_engine_vtable;
+
+/* register a new event engine factory */
+void grpc_register_event_engine_factory(
+    const char* name, const grpc_event_engine_vtable* (*factory)(bool),
+    bool add_at_head);
+
+void grpc_event_engine_init(void);
+void grpc_event_engine_shutdown(void);
+
+/* Return the name of the poll strategy */
+const char* grpc_get_poll_strategy_name();
+
+/* Returns true if polling engine can track errors separately, false otherwise.
+ * If this is true, fd can be created with track_err set. After this, error
+ * events will be reported using fd_notify_on_error. If it is not set, errors
+ * will continue to be reported through fd_notify_on_read and
+ * fd_notify_on_write.
+ */
+bool grpc_event_engine_can_track_errors();
+
+/* Returns true if polling engine runs in the background, false otherwise.
+ * Currently only 'epollbg' runs in the background.
+ */
+bool grpc_event_engine_run_in_background();
+
+/* Create a wrapped file descriptor.
+   Requires fd is a non-blocking file descriptor.
+   \a track_err if true means that error events would be tracked separately
+   using grpc_fd_notify_on_error. Currently, valid only for linux systems.
+   This takes ownership of closing fd. */
+grpc_fd* grpc_fd_create(int fd, const char* name, bool track_err);
+
+/* Return the wrapped fd, or -1 if it has been released or closed. */
+int grpc_fd_wrapped_fd(grpc_fd* fd);
+
+/* Releases fd to be asynchronously destroyed.
+   on_done is called when the underlying file descriptor is definitely close()d.
+   If on_done is NULL, no callback will be made.
+   If release_fd is not NULL, it's set to fd and fd will not be closed.
+   Requires: *fd initialized; no outstanding notify_on_read or
+   notify_on_write.
+   MUST NOT be called with a pollset lock taken */
+void grpc_fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                    const char* reason);
+
+/* Has grpc_fd_shutdown been called on an fd? */
+bool grpc_fd_is_shutdown(grpc_fd* fd);
+
+/* Cause any current and future callbacks to fail. */
+void grpc_fd_shutdown(grpc_fd* fd, grpc_error* why);
+
+/* Register read interest, causing read_cb to be called once when fd becomes
+   readable, on deadline specified by deadline, or on shutdown triggered by
+   grpc_fd_shutdown.
+   read_cb will be called with read_cb_arg when *fd becomes readable.
+   read_cb is Called with status of GRPC_CALLBACK_SUCCESS if readable,
+   GRPC_CALLBACK_TIMED_OUT if the call timed out,
+   and CANCELLED if the call was cancelled.
+
+   Requires:This method must not be called before the read_cb for any previous
+   call runs. Edge triggered events are used whenever they are supported by the
+   underlying platform. This means that users must drain fd in read_cb before
+   calling notify_on_read again. Users are also expected to handle spurious
+   events, i.e read_cb is called while nothing can be readable from fd  */
+void grpc_fd_notify_on_read(grpc_fd* fd, grpc_closure* closure);
+
+/* Exactly the same semantics as above, except based on writable events.  */
+void grpc_fd_notify_on_write(grpc_fd* fd, grpc_closure* closure);
+
+/* Exactly the same semantics as above, except based on error events. track_err
+ * needs to have been set on grpc_fd_create */
+void grpc_fd_notify_on_error(grpc_fd* fd, grpc_closure* closure);
+
+/* Forcibly set the fd to be readable, resulting in the closure registered with
+ * grpc_fd_notify_on_read being invoked.
+ */
+void grpc_fd_set_readable(grpc_fd* fd);
+
+/* Forcibly set the fd to be writable, resulting in the closure registered with
+ * grpc_fd_notify_on_write being invoked.
+ */
+void grpc_fd_set_writable(grpc_fd* fd);
+
+/* Forcibly set the fd to have errored, resulting in the closure registered with
+ * grpc_fd_notify_on_error being invoked.
+ */
+void grpc_fd_set_error(grpc_fd* fd);
+
+/* pollset_posix functions */
+
+/* Add an fd to a pollset */
+void grpc_pollset_add_fd(grpc_pollset* pollset, struct grpc_fd* fd);
+
+/* pollset_set_posix functions */
+
+void grpc_pollset_set_add_fd(grpc_pollset_set* pollset_set, grpc_fd* fd);
+void grpc_pollset_set_del_fd(grpc_pollset_set* pollset_set, grpc_fd* fd);
+
+/* Returns true if the caller is a worker thread for any background poller. */
+bool grpc_is_any_background_poller_thread();
+
+/* Returns true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_add_closure_to_background_poller(grpc_closure* closure,
+                                           grpc_error* error);
+
+/* Shut down all the closures registered in the background poller. */
+void grpc_shutdown_background_closure();
+
+/* override to allow tests to hook poll() usage */
+typedef int (*grpc_poll_function_type)(struct pollfd*, nfds_t, int);
+extern grpc_poll_function_type grpc_poll_function;
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/exec_ctx.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/exec_ctx.h
new file mode 100644
index 0000000..4e746bc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/exec_ctx.h	
@@ -0,0 +1,368 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
+#define GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/fork.h"
+#include "src/core/lib/iomgr/closure.h"
+
+typedef int64_t grpc_millis;
+
+#define GRPC_MILLIS_INF_FUTURE INT64_MAX
+#define GRPC_MILLIS_INF_PAST INT64_MIN
+
+/** A combiner represents a list of work to be executed later.
+    Forward declared here to avoid a circular dependency with combiner.h. */
+typedef struct grpc_combiner grpc_combiner;
+
+/* This exec_ctx is ready to return: either pre-populated, or cached as soon as
+   the finish_check returns true */
+#define GRPC_EXEC_CTX_FLAG_IS_FINISHED 1
+/* The exec_ctx's thread is (potentially) owned by a call or channel: care
+   should be given to not delete said call/channel from this exec_ctx */
+#define GRPC_EXEC_CTX_FLAG_THREAD_RESOURCE_LOOP 2
+/* This exec ctx was initialized by an internal thread, and should not
+   be counted by fork handlers */
+#define GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD 4
+
+/* This application callback exec ctx was initialized by an internal thread, and
+   should not be counted by fork handlers */
+#define GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD 1
+
+gpr_timespec grpc_millis_to_timespec(grpc_millis millis, gpr_clock_type clock);
+grpc_millis grpc_timespec_to_millis_round_down(gpr_timespec timespec);
+grpc_millis grpc_timespec_to_millis_round_up(gpr_timespec timespec);
+grpc_millis grpc_cycle_counter_to_millis_round_down(gpr_cycle_counter cycles);
+grpc_millis grpc_cycle_counter_to_millis_round_up(gpr_cycle_counter cycles);
+
+namespace grpc_core {
+class Combiner;
+/** Execution context.
+ *  A bag of data that collects information along a callstack.
+ *  It is created on the stack at core entry points (public API or iomgr), and
+ *  stored internally as a thread-local variable.
+ *
+ *  Generally, to create an exec_ctx instance, add the following line at the top
+ *  of the public API entry point or at the start of a thread's work function :
+ *
+ *  grpc_core::ExecCtx exec_ctx;
+ *
+ *  Access the created ExecCtx instance using :
+ *  grpc_core::ExecCtx::Get()
+ *
+ *  Specific responsibilities (this may grow in the future):
+ *  - track a list of core work that needs to be delayed until the base of the
+ *    call stack (this provides a convenient mechanism to run callbacks
+ *    without worrying about locking issues)
+ *  - provide a decision maker (via IsReadyToFinish) that provides a
+ *    signal as to whether a borrowed thread should continue to do work or
+ *    should actively try to finish up and get this thread back to its owner
+ *
+ *  CONVENTIONS:
+ *  - Instance of this must ALWAYS be constructed on the stack, never
+ *    heap allocated.
+ *  - Do not pass exec_ctx as a parameter to a function. Always access it using
+ *    grpc_core::ExecCtx::Get().
+ *  - NOTE: In the future, the convention is likely to change to allow only one
+ *          ExecCtx on a thread's stack at the same time. The TODO below
+ *          discusses this plan in more detail.
+ *
+ * TODO(yashykt): Only allow one "active" ExecCtx on a thread at the same time.
+ *                Stage 1: If a new one is created on the stack, it should just
+ *                pass-through to the underlying ExecCtx deeper in the thread's
+ *                stack.
+ *                Stage 2: Assert if a 2nd one is ever created on the stack
+ *                since that implies a core re-entry outside of application
+ *                callbacks.
+ */
+class ExecCtx {
+ public:
+  /** Default Constructor */
+
+  ExecCtx() : flags_(GRPC_EXEC_CTX_FLAG_IS_FINISHED) {
+    grpc_core::Fork::IncExecCtxCount();
+    Set(this);
+  }
+
+  /** Parameterised Constructor */
+  ExecCtx(uintptr_t fl) : flags_(fl) {
+    if (!(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+      grpc_core::Fork::IncExecCtxCount();
+    }
+    Set(this);
+  }
+
+  /** Destructor */
+  virtual ~ExecCtx() {
+    flags_ |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
+    Flush();
+    Set(last_exec_ctx_);
+    if (!(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+      grpc_core::Fork::DecExecCtxCount();
+    }
+  }
+
+  /** Disallow copy and assignment operators */
+  ExecCtx(const ExecCtx&) = delete;
+  ExecCtx& operator=(const ExecCtx&) = delete;
+
+  unsigned starting_cpu() const { return starting_cpu_; }
+
+  struct CombinerData {
+    /* currently active combiner: updated only via combiner.c */
+    Combiner* active_combiner;
+    /* last active combiner in the active combiner list */
+    Combiner* last_combiner;
+  };
+
+  /** Only to be used by grpc-combiner code */
+  CombinerData* combiner_data() { return &combiner_data_; }
+
+  /** Return pointer to grpc_closure_list */
+  grpc_closure_list* closure_list() { return &closure_list_; }
+
+  /** Return flags */
+  uintptr_t flags() { return flags_; }
+
+  /** Checks if there is work to be done */
+  bool HasWork() {
+    return combiner_data_.active_combiner != nullptr ||
+           !grpc_closure_list_empty(closure_list_);
+  }
+
+  /** Flush any work that has been enqueued onto this grpc_exec_ctx.
+   *  Caller must guarantee that no interfering locks are held.
+   *  Returns true if work was performed, false otherwise.
+   */
+  bool Flush();
+
+  /** Returns true if we'd like to leave this execution context as soon as
+   *  possible: useful for deciding whether to do something more or not
+   *  depending on outside context.
+   */
+  bool IsReadyToFinish() {
+    if ((flags_ & GRPC_EXEC_CTX_FLAG_IS_FINISHED) == 0) {
+      if (CheckReadyToFinish()) {
+        flags_ |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
+        return true;
+      }
+      return false;
+    } else {
+      return true;
+    }
+  }
+
+  /** Returns the stored current time relative to start if valid,
+   *  otherwise refreshes the stored time, sets it valid and returns the new
+   *  value.
+   */
+  grpc_millis Now();
+
+  /** Invalidates the stored time value. A new time value will be set on calling
+   *  Now().
+   */
+  void InvalidateNow() { now_is_valid_ = false; }
+
+  /** To be used only by shutdown code in iomgr */
+  void SetNowIomgrShutdown() {
+    now_ = GRPC_MILLIS_INF_FUTURE;
+    now_is_valid_ = true;
+  }
+
+  /** To be used only for testing.
+   *  Sets the now value.
+   */
+  void TestOnlySetNow(grpc_millis new_val) {
+    now_ = new_val;
+    now_is_valid_ = true;
+  }
+
+  static void TestOnlyGlobalInit(gpr_timespec new_val);
+
+  /** Global initialization for ExecCtx. Called by iomgr. */
+  static void GlobalInit(void);
+
+  /** Global shutdown for ExecCtx. Called by iomgr. */
+  static void GlobalShutdown(void) { gpr_tls_destroy(&exec_ctx_); }
+
+  /** Gets pointer to current exec_ctx. */
+  static ExecCtx* Get() {
+    return reinterpret_cast<ExecCtx*>(gpr_tls_get(&exec_ctx_));
+  }
+
+  static void Set(ExecCtx* exec_ctx) {
+    gpr_tls_set(&exec_ctx_, reinterpret_cast<intptr_t>(exec_ctx));
+  }
+
+  static void Run(const DebugLocation& location, grpc_closure* closure,
+                  grpc_error* error);
+
+  static void RunList(const DebugLocation& location, grpc_closure_list* list);
+
+ protected:
+  /** Check if ready to finish. */
+  virtual bool CheckReadyToFinish() { return false; }
+
+  /** Disallow delete on ExecCtx. */
+  static void operator delete(void* /* p */) { abort(); }
+
+ private:
+  /** Set exec_ctx_ to exec_ctx. */
+
+  grpc_closure_list closure_list_ = GRPC_CLOSURE_LIST_INIT;
+  CombinerData combiner_data_ = {nullptr, nullptr};
+  uintptr_t flags_;
+
+  unsigned starting_cpu_ = gpr_cpu_current_cpu();
+
+  bool now_is_valid_ = false;
+  grpc_millis now_ = 0;
+
+  GPR_TLS_CLASS_DECL(exec_ctx_);
+  ExecCtx* last_exec_ctx_ = Get();
+};
+
+/** Application-callback execution context.
+ *  A bag of data that collects information along a callstack.
+ *  It is created on the stack at core entry points, and stored internally
+ *  as a thread-local variable.
+ *
+ *  There are three key differences between this structure and ExecCtx:
+ *    1. ApplicationCallbackExecCtx builds a list of application-level
+ *       callbacks, but ExecCtx builds a list of internal callbacks to invoke.
+ *    2. ApplicationCallbackExecCtx invokes its callbacks only at destruction;
+ *       there is no explicit Flush method.
+ *    3. If more than one ApplicationCallbackExecCtx is created on the thread's
+ *       stack, only the one closest to the base of the stack is actually
+ *       active and this is the only one that enqueues application callbacks.
+ *       (Unlike ExecCtx, it is not feasible to prevent multiple of these on the
+ *       stack since the executing application callback may itself enter core.
+ *       However, the new one created will just pass callbacks through to the
+ *       base one and those will not be executed until the return to the
+ *       destructor of the base one, preventing unlimited stack growth.)
+ *
+ *  This structure exists because application callbacks may themselves cause a
+ *  core re-entry (e.g., through a public API call) and if that call in turn
+ *  causes another application-callback, there could be arbitrarily growing
+ *  stacks of core re-entries. Instead, any application callbacks instead should
+ *  not be invoked until other core work is done and other application callbacks
+ *  have completed. To accomplish this, any application callback should be
+ *  enqueued using grpc_core::ApplicationCallbackExecCtx::Enqueue .
+ *
+ *  CONVENTIONS:
+ *  - Instances of this must ALWAYS be constructed on the stack, never
+ *    heap allocated.
+ *  - Instances of this are generally constructed before ExecCtx when needed.
+ *    The only exception is for ExecCtx's that are explicitly flushed and
+ *    that survive beyond the scope of the function that can cause application
+ *    callbacks to be invoked (e.g., in the timer thread).
+ *
+ *  Generally, core entry points that may trigger application-level callbacks
+ *  will have the following declarations:
+ *
+ *  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+ *  grpc_core::ExecCtx exec_ctx;
+ *
+ *  This ordering is important to make sure that the ApplicationCallbackExecCtx
+ *  is destroyed after the ExecCtx (to prevent the re-entry problem described
+ *  above, as well as making sure that ExecCtx core callbacks are invoked first)
+ *
+ */
+
+class ApplicationCallbackExecCtx {
+ public:
+  /** Default Constructor */
+  ApplicationCallbackExecCtx() { Set(this, flags_); }
+
+  /** Parameterised Constructor */
+  ApplicationCallbackExecCtx(uintptr_t fl) : flags_(fl) { Set(this, flags_); }
+
+  ~ApplicationCallbackExecCtx() {
+    if (reinterpret_cast<ApplicationCallbackExecCtx*>(
+            gpr_tls_get(&callback_exec_ctx_)) == this) {
+      while (head_ != nullptr) {
+        auto* f = head_;
+        head_ = f->internal_next;
+        if (f->internal_next == nullptr) {
+          tail_ = nullptr;
+        }
+        (*f->functor_run)(f, f->internal_success);
+      }
+      gpr_tls_set(&callback_exec_ctx_, reinterpret_cast<intptr_t>(nullptr));
+      if (!(GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+        grpc_core::Fork::DecExecCtxCount();
+      }
+    } else {
+      GPR_DEBUG_ASSERT(head_ == nullptr);
+      GPR_DEBUG_ASSERT(tail_ == nullptr);
+    }
+  }
+
+  static void Set(ApplicationCallbackExecCtx* exec_ctx, uintptr_t flags) {
+    if (reinterpret_cast<ApplicationCallbackExecCtx*>(
+            gpr_tls_get(&callback_exec_ctx_)) == nullptr) {
+      if (!(GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags)) {
+        grpc_core::Fork::IncExecCtxCount();
+      }
+      gpr_tls_set(&callback_exec_ctx_, reinterpret_cast<intptr_t>(exec_ctx));
+    }
+  }
+
+  static void Enqueue(grpc_experimental_completion_queue_functor* functor,
+                      int is_success) {
+    functor->internal_success = is_success;
+    functor->internal_next = nullptr;
+
+    auto* ctx = reinterpret_cast<ApplicationCallbackExecCtx*>(
+        gpr_tls_get(&callback_exec_ctx_));
+
+    if (ctx->head_ == nullptr) {
+      ctx->head_ = functor;
+    }
+    if (ctx->tail_ != nullptr) {
+      ctx->tail_->internal_next = functor;
+    }
+    ctx->tail_ = functor;
+  }
+
+  /** Global initialization for ApplicationCallbackExecCtx. Called by init. */
+  static void GlobalInit(void) { gpr_tls_init(&callback_exec_ctx_); }
+
+  /** Global shutdown for ApplicationCallbackExecCtx. Called by init. */
+  static void GlobalShutdown(void) { gpr_tls_destroy(&callback_exec_ctx_); }
+
+ private:
+  uintptr_t flags_{0u};
+  grpc_experimental_completion_queue_functor* head_{nullptr};
+  grpc_experimental_completion_queue_functor* tail_{nullptr};
+  GPR_TLS_CLASS_DECL(callback_exec_ctx_);
+};
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXEC_CTX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor.h
new file mode 100644
index 0000000..7133700
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor.h	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/closure.h"
+
+namespace grpc_core {
+
+struct ThreadState {
+  gpr_mu mu;
+  size_t id;         // For debugging purposes
+  const char* name;  // Thread state name
+  gpr_cv cv;
+  grpc_closure_list elems;
+  size_t depth;  // Number of closures in the closure list
+  bool shutdown;
+  bool queued_long_job;
+  grpc_core::Thread thd;
+};
+
+enum class ExecutorType {
+  DEFAULT = 0,
+  RESOLVER,
+
+  NUM_EXECUTORS  // Add new values above this
+};
+
+enum class ExecutorJobType {
+  SHORT = 0,
+  LONG,
+  NUM_JOB_TYPES  // Add new values above this
+};
+
+class Executor {
+ public:
+  Executor(const char* executor_name);
+
+  void Init();
+
+  /** Is the executor multi-threaded? */
+  bool IsThreaded() const;
+
+  /* Enable/disable threading - must be called after Init and Shutdown(). Never
+   * call SetThreading(false) in the middle of an application */
+  void SetThreading(bool threading);
+
+  /** Shutdown the executor, running all pending work as part of the call */
+  void Shutdown();
+
+  /** Enqueue the closure onto the executor. is_short is true if the closure is
+   * a short job (i.e expected to not block and complete quickly) */
+  void Enqueue(grpc_closure* closure, grpc_error* error, bool is_short);
+
+  // TODO(sreek): Currently we have two executors (available globally): The
+  // default executor and the resolver executor.
+  //
+  // Some of the functions below operate on the DEFAULT executor only while some
+  // operate of ALL the executors. This is a bit confusing and should be cleaned
+  // up in future (where we make all the following functions take ExecutorType
+  // and/or JobType)
+
+  // Initialize ALL the executors
+  static void InitAll();
+
+  static void Run(grpc_closure* closure, grpc_error* error,
+                  ExecutorType executor_type = ExecutorType::DEFAULT,
+                  ExecutorJobType job_type = ExecutorJobType::SHORT);
+
+  // Shutdown ALL the executors
+  static void ShutdownAll();
+
+  // Set the threading mode for ALL the executors
+  static void SetThreadingAll(bool enable);
+
+  // Set the threading mode for ALL the executors
+  static void SetThreadingDefault(bool enable);
+
+  // Return if a given executor is running in threaded mode (i.e if
+  // SetThreading(true) was called previously on that executor)
+  static bool IsThreaded(ExecutorType executor_type);
+
+  // Return if the DEFAULT executor is threaded
+  static bool IsThreadedDefault();
+
+ private:
+  static size_t RunClosures(const char* executor_name, grpc_closure_list list);
+  static void ThreadMain(void* arg);
+
+  const char* name_;
+  ThreadState* thd_state_;
+  size_t max_threads_;
+  gpr_atm num_threads_;
+  gpr_spinlock adding_thread_lock_;
+};
+
+// Global initializer for executor
+void grpc_executor_global_init();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/mpmcqueue.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/mpmcqueue.h
new file mode 100644
index 0000000..474f40b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/mpmcqueue.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_thread_pool_trace;
+
+// Abstract base class of a Multiple-Producer-Multiple-Consumer(MPMC) queue
+// interface
+class MPMCQueueInterface {
+ public:
+  virtual ~MPMCQueueInterface() {}
+
+  // Puts elem into queue immediately at the end of queue.
+  // This might cause to block on full queue depending on implementation.
+  virtual void Put(void* elem) = 0;
+
+  // Removes the oldest element from the queue and return it.
+  // This might cause to block on empty queue depending on implementation.
+  // Optional argument for collecting stats purpose.
+  virtual void* Get(gpr_timespec* wait_time = nullptr) = 0;
+
+  // Returns number of elements in the queue currently
+  virtual int count() const = 0;
+};
+
+class InfLenFIFOQueue : public MPMCQueueInterface {
+ public:
+  // Creates a new MPMC Queue. The queue created will have infinite length.
+  InfLenFIFOQueue();
+
+  // Releases all resources held by the queue. The queue must be empty, and no
+  // one waits on conditional variables.
+  ~InfLenFIFOQueue();
+
+  // Puts elem into queue immediately at the end of queue. Since the queue has
+  // infinite length, this routine will never block and should never fail.
+  void Put(void* elem);
+
+  // Removes the oldest element from the queue and returns it.
+  // This routine will cause the thread to block if queue is currently empty.
+  // Argument wait_time should be passed in when trace flag turning on (for
+  // collecting stats info purpose.)
+  void* Get(gpr_timespec* wait_time = nullptr);
+
+  // Returns number of elements in queue currently.
+  // There might be concurrently add/remove on queue, so count might change
+  // quickly.
+  int count() const { return count_.Load(MemoryOrder::RELAXED); }
+
+  struct Node {
+    Node* next;  // Linking
+    Node* prev;
+    void* content;             // Points to actual element
+    gpr_timespec insert_time;  // Time for stats
+
+    Node() {
+      next = prev = nullptr;
+      content = nullptr;
+    }
+  };
+
+  // For test purpose only. Returns number of nodes allocated in queue.
+  // Any allocated node will be alive until the destruction of the queue.
+  int num_nodes() const { return num_nodes_; }
+
+  // For test purpose only. Returns the initial number of nodes in queue.
+  int init_num_nodes() const { return kQueueInitNumNodes; }
+
+ private:
+  // For Internal Use Only.
+  // Removes the oldest element from the queue and returns it. This routine
+  // will NOT check whether queue is empty, and it will NOT acquire mutex.
+  // Caller MUST check that queue is not empty and must acquire mutex before
+  // callling.
+  void* PopFront();
+
+  // Stats of queue. This will only be collect when debug trace mode is on.
+  // All printed stats info will have time measurement in microsecond.
+  struct Stats {
+    uint64_t num_started;    // Number of elements have been added to queue
+    uint64_t num_completed;  // Number of elements have been removed from
+                             // the queue
+    gpr_timespec total_queue_time;  // Total waiting time that all the
+                                    // removed elements have spent in queue
+    gpr_timespec max_queue_time;    // Max waiting time among all removed
+                                    // elements
+    gpr_timespec busy_queue_time;   // Accumulated amount of time that queue
+                                    // was not empty
+
+    Stats() {
+      num_started = 0;
+      num_completed = 0;
+      total_queue_time = gpr_time_0(GPR_TIMESPAN);
+      max_queue_time = gpr_time_0(GPR_TIMESPAN);
+      busy_queue_time = gpr_time_0(GPR_TIMESPAN);
+    }
+  };
+
+  // Node for waiting thread queue. Stands for one waiting thread, should have
+  // exact one thread waiting on its CondVar.
+  // Using a doubly linked list for waiting thread queue to wake up waiting
+  // threads in LIFO order to reduce cache misses.
+  struct Waiter {
+    CondVar cv;
+    Waiter* next;
+    Waiter* prev;
+  };
+
+  // Pushs waiter to the front of queue, require caller held mutex
+  void PushWaiter(Waiter* waiter);
+
+  // Removes waiter from queue, require caller held mutex
+  void RemoveWaiter(Waiter* waiter);
+
+  // Returns pointer to the waiter that should be waken up next, should be the
+  // last added waiter.
+  Waiter* TopWaiter();
+
+  Mutex mu_;        // Protecting lock
+  Waiter waiters_;  // Head of waiting thread queue
+
+  // Initial size for delete list
+  static const int kDeleteListInitSize = 1024;
+  // Initial number of nodes allocated
+  static const int kQueueInitNumNodes = 1024;
+
+  Node** delete_list_ = nullptr;  // Keeps track of all allocated array entries
+                                  // for deleting on destruction
+  size_t delete_list_count_ = 0;  // Number of entries in list
+  size_t delete_list_size_ = 0;   // Size of the list. List will be expanded to
+                                  // double size on full
+
+  Node* queue_head_ = nullptr;  // Head of the queue, remove position
+  Node* queue_tail_ = nullptr;  // End of queue, insert position
+  Atomic<int> count_{0};        // Number of elements in queue
+  int num_nodes_ = 0;           // Number of nodes allocated
+
+  Stats stats_;            // Stats info
+  gpr_timespec busy_time;  // Start time of busy queue
+
+  // Internal Helper.
+  // Allocates an array of nodes of size "num", links all nodes together except
+  // the first node's prev and last node's next. They should be set by caller
+  // manually afterward.
+  Node* AllocateNodes(int num);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/threadpool.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/threadpool.h
new file mode 100644
index 0000000..01a00c0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/executor/threadpool.h	
@@ -0,0 +1,149 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/executor/mpmcqueue.h"
+
+namespace grpc_core {
+
+// A base abstract base class for threadpool.
+// Threadpool is an executor that maintains a pool of threads sitting around
+// and waiting for closures. A threadpool also maintains a queue of pending
+// closures, when closures appearing in the queue, the threads in pool will
+// pull them out and execute them.
+class ThreadPoolInterface {
+ public:
+  // Waits for all pending closures to complete, then shuts down thread pool.
+  virtual ~ThreadPoolInterface() {}
+
+  // Schedules a given closure for execution later.
+  // Depending on specific subclass implementation, this routine might cause
+  // current thread to be blocked (in case of unable to schedule).
+  // Closure should contain a function pointer and arguments it will take, more
+  // details for closure struct at /grpc/include/grpc/impl/codegen/grpc_types.h
+  virtual void Add(grpc_experimental_completion_queue_functor* closure) = 0;
+
+  // Returns the current number of pending closures
+  virtual int num_pending_closures() const = 0;
+
+  // Returns the capacity of pool (number of worker threads in pool)
+  virtual int pool_capacity() const = 0;
+
+  // Thread option accessor
+  virtual const Thread::Options& thread_options() const = 0;
+
+  // Returns the thread name for threads in this ThreadPool.
+  virtual const char* thread_name() const = 0;
+};
+
+// Worker thread for threadpool. Executes closures in the queue, until getting a
+// NULL closure.
+class ThreadPoolWorker {
+ public:
+  ThreadPoolWorker(const char* thd_name, MPMCQueueInterface* queue,
+                   Thread::Options& options, int index)
+      : queue_(queue), thd_name_(thd_name), index_(index) {
+    thd_ = Thread(thd_name,
+                  [](void* th) { static_cast<ThreadPoolWorker*>(th)->Run(); },
+                  this, nullptr, options);
+  }
+
+  ~ThreadPoolWorker() {}
+
+  void Start() { thd_.Start(); }
+  void Join() { thd_.Join(); }
+
+ private:
+  // struct for tracking stats of thread
+  struct Stats {
+    gpr_timespec sleep_time;
+    Stats() { sleep_time = gpr_time_0(GPR_TIMESPAN); }
+  };
+
+  void Run();  // Pulls closures from queue and executes them
+
+  MPMCQueueInterface* queue_;  // Queue in thread pool to pull closures from
+  Thread thd_;                 // Thread wrapped in
+  Stats stats_;                // Stats to be collected in run time
+  const char* thd_name_;       // Name of thread
+  int index_;                  // Index in thread pool
+};
+
+// A fixed size thread pool implementation of abstract thread pool interface.
+// In this implementation, the number of threads in pool is fixed, but the
+// capacity of closure queue is unlimited.
+class ThreadPool : public ThreadPoolInterface {
+ public:
+  // Creates a thread pool with size of "num_threads", with default thread name
+  // "ThreadPoolWorker" and all thread options set to default. If the given size
+  // is 0 or less, there will be 1 worker thread created inside pool.
+  ThreadPool(int num_threads);
+
+  // Same as ThreadPool(int num_threads) constructor, except
+  // that it also sets "thd_name" as the name of all threads in the thread pool.
+  ThreadPool(int num_threads, const char* thd_name);
+
+  // Same as ThreadPool(const char *thd_name, int num_threads) constructor,
+  // except that is also set thread_options for threads.
+  // Notes for stack size:
+  // If the stack size field of the passed in Thread::Options is set to default
+  // value 0, default ThreadPool stack size will be used. The current default
+  // stack size of this implementation is 1952K for mobile platform and 64K for
+  // all others.
+  ThreadPool(int num_threads, const char* thd_name,
+             const Thread::Options& thread_options);
+
+  // Waits for all pending closures to complete, then shuts down thread pool.
+  ~ThreadPool() override;
+
+  // Adds given closure into pending queue immediately. Since closure queue has
+  // infinite length, this routine will not block.
+  void Add(grpc_experimental_completion_queue_functor* closure) override;
+
+  int num_pending_closures() const override;
+  int pool_capacity() const override;
+  const Thread::Options& thread_options() const override;
+  const char* thread_name() const override;
+
+ private:
+  int num_threads_ = 0;
+  const char* thd_name_ = nullptr;
+  Thread::Options thread_options_;
+  ThreadPoolWorker** threads_ = nullptr;  // Array of worker threads
+  MPMCQueueInterface* queue_ = nullptr;   // Closure queue
+
+  Atomic<bool> shut_down_{false};  // Destructor has been called if set to true
+
+  void SharedThreadPoolConstructor();
+  // For ThreadPool, default stack size for mobile platform is 1952K. for other
+  // platforms is 64K.
+  size_t DefaultStackSize();
+  // Internal Use Only for debug checking.
+  void AssertHasNotBeenShutDown();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/gethostname.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/gethostname.h
new file mode 100644
index 0000000..9f10b4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/gethostname.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H
+#define GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H
+
+// Returns the hostname of the local machine.
+// Caller takes ownership of result.
+char* grpc_gethostname();
+
+#endif /* GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/grpc_if_nametoindex.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/grpc_if_nametoindex.h
new file mode 100644
index 0000000..ed9612d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/grpc_if_nametoindex.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H
+#define GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* Returns the interface index corresponding to the interface "name" provided.
+ * Returns non-zero upon success, and zero upon failure. */
+uint32_t grpc_if_nametoindex(char* name);
+
+#endif /* GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/internal_errqueue.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/internal_errqueue.h
new file mode 100644
index 0000000..b9fe411
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/internal_errqueue.h	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This file contains constants defined in <linux/errqueue.h> and
+ * <linux/net_tstamp.h> so as to allow collecting network timestamps in the
+ * kernel. This file allows tcp_posix.cc to compile on platforms that do not
+ * have <linux/errqueue.h> and <linux/net_tstamp.h>.
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include <sys/types.h>
+#include <time.h>
+
+#ifdef GRPC_LINUX_ERRQUEUE
+#include <linux/errqueue.h>
+#include <linux/net_tstamp.h>
+#include <linux/netlink.h>
+#include <sys/socket.h>
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+namespace grpc_core {
+
+#ifdef GRPC_LINUX_ERRQUEUE
+
+/* Redefining scm_timestamping in the same way that <linux/errqueue.h> defines
+ * it, so that code compiles on systems that don't have it. */
+struct scm_timestamping {
+  struct timespec ts[3];
+};
+/* Also redefine timestamp types */
+/* The timestamp type for when the driver passed skb to NIC, or HW. */
+constexpr int SCM_TSTAMP_SND = 0;
+/* The timestamp type for when data entered the packet scheduler. */
+constexpr int SCM_TSTAMP_SCHED = 1;
+/* The timestamp type for when data acknowledged by peer. */
+constexpr int SCM_TSTAMP_ACK = 2;
+
+/* Control message type containing OPT_STATS */
+#ifndef SCM_TIMESTAMPING_OPT_STATS
+#define SCM_TIMESTAMPING_OPT_STATS 54
+#endif
+
+/* Redefine required constants from <linux/net_tstamp.h> */
+constexpr uint32_t SOF_TIMESTAMPING_TX_SOFTWARE = 1u << 1;
+constexpr uint32_t SOF_TIMESTAMPING_SOFTWARE = 1u << 4;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_ID = 1u << 7;
+constexpr uint32_t SOF_TIMESTAMPING_TX_SCHED = 1u << 8;
+constexpr uint32_t SOF_TIMESTAMPING_TX_ACK = 1u << 9;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_TSONLY = 1u << 11;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_STATS = 1u << 12;
+
+constexpr uint32_t kTimestampingSocketOptions =
+    SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_OPT_ID |
+    SOF_TIMESTAMPING_OPT_TSONLY | SOF_TIMESTAMPING_OPT_STATS;
+constexpr uint32_t kTimestampingRecordingOptions =
+    SOF_TIMESTAMPING_TX_SCHED | SOF_TIMESTAMPING_TX_SOFTWARE |
+    SOF_TIMESTAMPING_TX_ACK;
+
+/* Netlink attribute types used for TCP opt stats. */
+enum TCPOptStats {
+  TCP_NLA_PAD,
+  TCP_NLA_BUSY,           /* Time (usec) busy sending data. */
+  TCP_NLA_RWND_LIMITED,   /* Time (usec) limited by receive window. */
+  TCP_NLA_SNDBUF_LIMITED, /* Time (usec) limited by send buffer. */
+  TCP_NLA_DATA_SEGS_OUT,  /* Data pkts sent including retransmission. */
+  TCP_NLA_TOTAL_RETRANS,  /* Data pkts retransmitted. */
+  TCP_NLA_PACING_RATE,    /* Pacing rate in Bps. */
+  TCP_NLA_DELIVERY_RATE,  /* Delivery rate in Bps. */
+  TCP_NLA_SND_CWND,       /* Sending congestion window. */
+  TCP_NLA_REORDERING,     /* Reordering metric. */
+  TCP_NLA_MIN_RTT,        /* minimum RTT. */
+  TCP_NLA_RECUR_RETRANS,  /* Recurring retransmits for the current pkt. */
+  TCP_NLA_DELIVERY_RATE_APP_LMT, /* Delivery rate application limited? */
+  TCP_NLA_SNDQ_SIZE,             /* Data (bytes) pending in send queue */
+  TCP_NLA_CA_STATE,              /* ca_state of socket */
+  TCP_NLA_SND_SSTHRESH,          /* Slow start size threshold */
+  TCP_NLA_DELIVERED,             /* Data pkts delivered incl. out-of-order */
+  TCP_NLA_DELIVERED_CE,          /* Like above but only ones w/ CE marks */
+  TCP_NLA_BYTES_SENT,            /* Data bytes sent including retransmission */
+  TCP_NLA_BYTES_RETRANS,         /* Data bytes retransmitted */
+  TCP_NLA_DSACK_DUPS,            /* DSACK blocks received */
+  TCP_NLA_REORD_SEEN,            /* reordering events seen */
+  TCP_NLA_SRTT,                  /* smoothed RTT in usecs */
+};
+
+/* tcp_info from from linux/tcp.h */
+struct tcp_info {
+  uint8_t tcpi_state;
+  uint8_t tcpi_ca_state;
+  uint8_t tcpi_retransmits;
+  uint8_t tcpi_probes;
+  uint8_t tcpi_backoff;
+  uint8_t tcpi_options;
+  uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
+  uint8_t tcpi_delivery_rate_app_limited : 1;
+  uint32_t tcpi_rto;
+  uint32_t tcpi_ato;
+  uint32_t tcpi_snd_mss;
+  uint32_t tcpi_rcv_mss;
+  uint32_t tcpi_unacked;
+  uint32_t tcpi_sacked;
+  uint32_t tcpi_lost;
+  uint32_t tcpi_retrans;
+  uint32_t tcpi_fackets;
+  /* Times. */
+  uint32_t tcpi_last_data_sent;
+  uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */
+  uint32_t tcpi_last_data_recv;
+  uint32_t tcpi_last_ack_recv;
+  /* Metrics. */
+  uint32_t tcpi_pmtu;
+  uint32_t tcpi_rcv_ssthresh;
+  uint32_t tcpi_rtt;
+  uint32_t tcpi_rttvar;
+  uint32_t tcpi_snd_ssthresh;
+  uint32_t tcpi_snd_cwnd;
+  uint32_t tcpi_advmss;
+  uint32_t tcpi_reordering;
+  uint32_t tcpi_rcv_rtt;
+  uint32_t tcpi_rcv_space;
+  uint32_t tcpi_total_retrans;
+  uint64_t tcpi_pacing_rate;
+  uint64_t tcpi_max_pacing_rate;
+  uint64_t tcpi_bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked */
+  uint64_t tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */
+
+  uint32_t tcpi_segs_out; /* RFC4898 tcpEStatsPerfSegsOut */
+  uint32_t tcpi_segs_in;  /* RFC4898 tcpEStatsPerfSegsIn */
+  uint32_t tcpi_notsent_bytes;
+  uint32_t tcpi_min_rtt;
+
+  uint32_t tcpi_data_segs_in;  /* RFC4898 tcpEStatsDataSegsIn */
+  uint32_t tcpi_data_segs_out; /* RFC4898 tcpEStatsDataSegsOut */
+
+  uint64_t tcpi_delivery_rate;
+  uint64_t tcpi_busy_time;      /* Time (usec) busy sending data */
+  uint64_t tcpi_rwnd_limited;   /* Time (usec) limited by receive window */
+  uint64_t tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */
+
+  uint32_t tcpi_delivered;
+  uint32_t tcpi_delivered_ce;
+  uint64_t tcpi_bytes_sent;    /* RFC4898 tcpEStatsPerfHCDataOctetsOut */
+  uint64_t tcpi_bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans */
+  uint32_t tcpi_dsack_dups;    /* RFC4898 tcpEStatsStackDSACKDups */
+  uint32_t tcpi_reord_seen;    /* reordering events seen */
+  socklen_t length;            /* Length of struct returned by kernel */
+};
+
+#ifndef TCP_INFO
+#define TCP_INFO 11
+#endif
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+/* Returns true if kernel is capable of supporting errqueue and timestamping.
+ * Currently allowing only linux kernels above 4.0.0
+ */
+bool kernel_supports_errqueue();
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_POSIX_SOCKET_TCP */
+
+namespace grpc_core {
+/* Initializes errqueue support */
+void grpc_errqueue_init();
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iocp_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iocp_windows.h
new file mode 100644
index 0000000..68d9de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iocp_windows.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+typedef enum {
+  GRPC_IOCP_WORK_WORK,
+  GRPC_IOCP_WORK_TIMEOUT,
+  GRPC_IOCP_WORK_KICK
+} grpc_iocp_work_status;
+
+grpc_iocp_work_status grpc_iocp_work(grpc_millis deadline);
+void grpc_iocp_init(void);
+void grpc_iocp_kick(void);
+void grpc_iocp_flush(void);
+void grpc_iocp_shutdown(void);
+void grpc_iocp_add_socket(grpc_winsocket*);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr.h
new file mode 100644
index 0000000..e02f15e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/port.h"
+
+#include <stdlib.h>
+
+/** Initializes the iomgr. */
+void grpc_iomgr_init();
+
+/** Starts any background threads for iomgr. */
+void grpc_iomgr_start();
+
+/** Signals the intention to shutdown the iomgr. Expects to be able to flush
+ * exec_ctx. */
+void grpc_iomgr_shutdown();
+
+/** Signals the intention to shutdown all the closures registered in the
+ * background poller. */
+void grpc_iomgr_shutdown_background_closure();
+
+/* Returns true if polling engine runs in the background, false otherwise.
+ * Currently only 'epollbg' runs in the background.
+ */
+bool grpc_iomgr_run_in_background();
+
+/** Returns true if the caller is a worker thread for any background poller. */
+bool grpc_iomgr_is_any_background_poller_thread();
+
+/** Returns true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_iomgr_add_closure_to_background_poller(grpc_closure* closure,
+                                                 grpc_error* error);
+
+/* Exposed only for testing */
+size_t grpc_iomgr_count_objects_for_testing();
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_custom.h
new file mode 100644
index 0000000..e6a8884
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_custom.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset_custom.h"
+#include "src/core/lib/iomgr/resolve_address_custom.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/timer_custom.h"
+
+#include <grpc/support/thd_id.h>
+
+/* The thread ID of the thread on which grpc was initialized. Used to verify
+ * that all calls into the custom iomgr are made on that same thread */
+extern gpr_thd_id g_init_thread;
+
+#ifdef GRPC_CUSTOM_IOMGR_THREAD_CHECK
+#define GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD() \
+  GPR_ASSERT(gpr_thd_currentid() == g_init_thread)
+#else
+#define GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD()
+#endif /* GRPC_CUSTOM_IOMGR_THREAD_CHECK */
+
+extern bool g_custom_iomgr_enabled;
+
+void grpc_custom_iomgr_init(grpc_socket_vtable* socket,
+                            grpc_custom_resolver_vtable* resolver,
+                            grpc_custom_timer_vtable* timer,
+                            grpc_custom_poller_vtable* poller);
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_internal.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_internal.h
new file mode 100644
index 0000000..17607f9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_internal.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/iomgr/iomgr.h"
+
+typedef struct grpc_iomgr_object {
+  char* name;
+  struct grpc_iomgr_object* next;
+  struct grpc_iomgr_object* prev;
+} grpc_iomgr_object;
+
+typedef struct grpc_iomgr_platform_vtable {
+  void (*init)(void);
+  void (*flush)(void);
+  void (*shutdown)(void);
+  void (*shutdown_background_closure)(void);
+  bool (*is_any_background_poller_thread)(void);
+  bool (*add_closure_to_background_poller)(grpc_closure* closure,
+                                           grpc_error* error);
+} grpc_iomgr_platform_vtable;
+
+void grpc_iomgr_register_object(grpc_iomgr_object* obj, const char* name);
+void grpc_iomgr_unregister_object(grpc_iomgr_object* obj);
+
+void grpc_determine_iomgr_platform();
+
+void grpc_set_iomgr_platform_vtable(grpc_iomgr_platform_vtable* vtable);
+
+void grpc_set_default_iomgr_platform();
+
+void grpc_iomgr_platform_init(void);
+/** flush any globally queued work from iomgr */
+void grpc_iomgr_platform_flush(void);
+/** tear down all platform specific global iomgr structures */
+void grpc_iomgr_platform_shutdown(void);
+
+/** shut down all the closures registered in the background poller */
+void grpc_iomgr_platform_shutdown_background_closure(void);
+
+/** return true if the caller is a worker thread for any background poller */
+bool grpc_iomgr_platform_is_any_background_poller_thread(void);
+
+/** Return true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_iomgr_platform_add_closure_to_background_poller(grpc_closure* closure,
+                                                          grpc_error* error);
+
+bool grpc_iomgr_abort_on_leaks(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_posix.h
new file mode 100644
index 0000000..54ec46e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/iomgr_posix.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/iomgr_internal.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/is_epollexclusive_available.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/is_epollexclusive_available.h
new file mode 100644
index 0000000..8a44113
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/is_epollexclusive_available.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H
+#define GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool grpc_is_epollexclusive_available(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/load_file.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/load_file.h
new file mode 100644
index 0000000..1cb2b5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/load_file.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_LOAD_FILE_H
+#define GRPC_CORE_LIB_IOMGR_LOAD_FILE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/* Loads the content of a file into a slice. add_null_terminator will add
+   a NULL terminator if non-zero. */
+grpc_error* grpc_load_file(const char* filename, int add_null_terminator,
+                           grpc_slice* slice);
+
+#endif /* GRPC_CORE_LIB_IOMGR_LOAD_FILE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/lockfree_event.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/lockfree_event.h
new file mode 100644
index 0000000..d6a6c22
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/lockfree_event.h	
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H
+#define GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H
+
+/* Lock free event notification for file descriptors */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/iomgr/closure.h"
+
+namespace grpc_core {
+
+class LockfreeEvent {
+ public:
+  LockfreeEvent();
+
+  LockfreeEvent(const LockfreeEvent&) = delete;
+  LockfreeEvent& operator=(const LockfreeEvent&) = delete;
+
+  // These methods are used to initialize and destroy the internal state. These
+  // cannot be done in constructor and destructor because SetReady may be called
+  // when the event is destroyed and put in a freelist.
+  void InitEvent();
+  void DestroyEvent();
+
+  // Returns true if fd has been shutdown, false otherwise.
+  bool IsShutdown() const {
+    return (gpr_atm_no_barrier_load(&state_) & kShutdownBit) != 0;
+  }
+
+  // Schedules \a closure when the event is received (see SetReady()) or the
+  // shutdown state has been set. Note that the event may have already been
+  // received, in which case the closure would be scheduled immediately.
+  // If the shutdown state has already been set, then \a closure is scheduled
+  // with the shutdown error.
+  void NotifyOn(grpc_closure* closure);
+
+  // Sets the shutdown state. If a closure had been provided by NotifyOn and has
+  // not yet been scheduled, it will be scheduled with \a error.
+  bool SetShutdown(grpc_error* error);
+
+  // Signals that the event has been received.
+  void SetReady();
+
+ private:
+  enum State { kClosureNotReady = 0, kClosureReady = 2, kShutdownBit = 1 };
+
+  gpr_atm state_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/nameser.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/nameser.h
new file mode 100644
index 0000000..22a00cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/nameser.h	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_NAMESER_H
+#define GRPC_CORE_LIB_IOMGR_NAMESER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_HAVE_ARPA_NAMESER
+
+#include <arpa/nameser.h>
+
+#else /* GRPC_HAVE_ARPA_NAMESER */
+
+typedef enum __ns_class {
+  ns_c_invalid = 0, /* Cookie. */
+  ns_c_in = 1,      /* Internet. */
+  ns_c_2 = 2,       /* unallocated/unsupported. */
+  ns_c_chaos = 3,   /* MIT Chaos-net. */
+  ns_c_hs = 4,      /* MIT Hesiod. */
+  /* Query class values which do not appear in resource records */
+  ns_c_none = 254, /* for prereq. sections in update requests */
+  ns_c_any = 255,  /* Wildcard match. */
+  ns_c_max = 65536
+} ns_class;
+
+typedef enum __ns_type {
+  ns_t_invalid = 0,   /* Cookie. */
+  ns_t_a = 1,         /* Host address. */
+  ns_t_ns = 2,        /* Authoritative server. */
+  ns_t_md = 3,        /* Mail destination. */
+  ns_t_mf = 4,        /* Mail forwarder. */
+  ns_t_cname = 5,     /* Canonical name. */
+  ns_t_soa = 6,       /* Start of authority zone. */
+  ns_t_mb = 7,        /* Mailbox domain name. */
+  ns_t_mg = 8,        /* Mail group member. */
+  ns_t_mr = 9,        /* Mail rename name. */
+  ns_t_null = 10,     /* Null resource record. */
+  ns_t_wks = 11,      /* Well known service. */
+  ns_t_ptr = 12,      /* Domain name pointer. */
+  ns_t_hinfo = 13,    /* Host information. */
+  ns_t_minfo = 14,    /* Mailbox information. */
+  ns_t_mx = 15,       /* Mail routing information. */
+  ns_t_txt = 16,      /* Text strings. */
+  ns_t_rp = 17,       /* Responsible person. */
+  ns_t_afsdb = 18,    /* AFS cell database. */
+  ns_t_x25 = 19,      /* X_25 calling address. */
+  ns_t_isdn = 20,     /* ISDN calling address. */
+  ns_t_rt = 21,       /* Router. */
+  ns_t_nsap = 22,     /* NSAP address. */
+  ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
+  ns_t_sig = 24,      /* Security signature. */
+  ns_t_key = 25,      /* Security key. */
+  ns_t_px = 26,       /* X.400 mail mapping. */
+  ns_t_gpos = 27,     /* Geographical position (withdrawn). */
+  ns_t_aaaa = 28,     /* Ip6 Address. */
+  ns_t_loc = 29,      /* Location Information. */
+  ns_t_nxt = 30,      /* Next domain (security). */
+  ns_t_eid = 31,      /* Endpoint identifier. */
+  ns_t_nimloc = 32,   /* Nimrod Locator. */
+  ns_t_srv = 33,      /* Server Selection. */
+  ns_t_atma = 34,     /* ATM Address */
+  ns_t_naptr = 35,    /* Naming Authority PoinTeR */
+  ns_t_kx = 36,       /* Key Exchange */
+  ns_t_cert = 37,     /* Certification record */
+  ns_t_a6 = 38,       /* IPv6 address (deprecates AAAA) */
+  ns_t_dname = 39,    /* Non-terminal DNAME (for IPv6) */
+  ns_t_sink = 40,     /* Kitchen sink (experimentatl) */
+  ns_t_opt = 41,      /* EDNS0 option (meta-RR) */
+  ns_t_apl = 42,      /* Address prefix list (RFC3123) */
+  ns_t_ds = 43,       /* Delegation Signer (RFC4034) */
+  ns_t_sshfp = 44,    /* SSH Key Fingerprint (RFC4255) */
+  ns_t_rrsig = 46,    /* Resource Record Signature (RFC4034) */
+  ns_t_nsec = 47,     /* Next Secure (RFC4034) */
+  ns_t_dnskey = 48,   /* DNS Public Key (RFC4034) */
+  ns_t_tkey = 249,    /* Transaction key */
+  ns_t_tsig = 250,    /* Transaction signature. */
+  ns_t_ixfr = 251,    /* Incremental zone transfer. */
+  ns_t_axfr = 252,    /* Transfer zone of authority. */
+  ns_t_mailb = 253,   /* Transfer mailbox records. */
+  ns_t_maila = 254,   /* Transfer mail agent records. */
+  ns_t_any = 255,     /* Wildcard match. */
+  ns_t_zxfr = 256,    /* BIND-specific, nonstandard. */
+  ns_t_max = 65536
+} ns_type;
+
+#endif /* GRPC_HAVE_ARPA_NAMESER */
+
+#endif /* GRPC_CORE_LIB_IOMGR_NAMESER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/poller/eventmanager_libuv.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/poller/eventmanager_libuv.h
new file mode 100644
index 0000000..3c0e05d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/poller/eventmanager_libuv.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H
+#define GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string>
+#include <vector>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+
+namespace grpc {
+namespace experimental {
+
+class LibuvEventManager {
+ public:
+  class Options {
+   public:
+    Options();
+    Options(int num_workers);
+
+    int num_workers() const { return num_workers_; }
+    void set_num_workers(int num) { num_workers_ = num; }
+
+    const std::string& thread_name_prefix() const {
+      return thread_name_prefix_;
+    }
+    void set_thread_name_prefix(const std::string& name) {
+      thread_name_prefix_ = name;
+    }
+
+   private:
+    // Number of worker threads to create at startup. If less than 0, uses the
+    // default value of 32.
+    int num_workers_;
+    // Name prefix used for worker.
+    std::string thread_name_prefix_;
+  };
+
+  explicit LibuvEventManager(const Options& options);
+  virtual ~LibuvEventManager();
+
+  void Shutdown();
+  void ShutdownRef();
+  void ShutdownUnref();
+
+ private:
+  // Function run by the worker threads.
+  void RunWorkerLoop();
+
+  // Whether the EventManager has been shut down.
+  bool ShouldStop();
+
+  const Options options_;
+  // Whether the EventManager workers should be stopped.
+  grpc_core::Atomic<bool> should_stop_{false};
+  // A refcount preventing the EventManager from shutdown.
+  grpc_core::Atomic<int> shutdown_refcount_{0};
+  // Worker threads of the EventManager.
+  std::vector<grpc_core::Thread> workers_;
+  // Mutex and condition variable used for shutdown.
+  grpc_core::Mutex shutdown_mu_;
+  grpc_core::CondVar shutdown_cv_;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/polling_entity.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/polling_entity.h
new file mode 100644
index 0000000..6f4c5bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/polling_entity.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
+#define GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+typedef enum grpc_pollset_tag {
+  GRPC_POLLS_NONE,
+  GRPC_POLLS_POLLSET,
+  GRPC_POLLS_POLLSET_SET
+} grpc_pollset_tag;
+
+/* A grpc_polling_entity is a pollset-or-pollset_set container. It allows
+ * functions that accept a pollset XOR a pollset_set to do so through an
+ * abstract interface. No ownership is taken. */
+
+struct grpc_polling_entity {
+  union {
+    grpc_pollset* pollset = nullptr;
+    grpc_pollset_set* pollset_set;
+  } pollent;
+  grpc_pollset_tag tag = GRPC_POLLS_NONE;
+};
+
+grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
+    grpc_pollset_set* pollset_set);
+grpc_polling_entity grpc_polling_entity_create_from_pollset(
+    grpc_pollset* pollset);
+
+/** If \a pollent contains a pollset, return it. Otherwise, return NULL */
+grpc_pollset* grpc_polling_entity_pollset(grpc_polling_entity* pollent);
+
+/** If \a pollent contains a pollset_set, return it. Otherwise, return NULL */
+grpc_pollset_set* grpc_polling_entity_pollset_set(grpc_polling_entity* pollent);
+
+bool grpc_polling_entity_is_empty(const grpc_polling_entity* pollent);
+
+/** Add the pollset or pollset_set in \a pollent to the destination pollset_set
+ * \a * pss_dst */
+void grpc_polling_entity_add_to_pollset_set(grpc_polling_entity* pollent,
+                                            grpc_pollset_set* pss_dst);
+
+/** Delete the pollset or pollset_set in \a pollent from the destination
+ * pollset_set \a * pss_dst */
+void grpc_polling_entity_del_from_pollset_set(grpc_polling_entity* pollent,
+                                              grpc_pollset_set* pss_dst);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset.h
new file mode 100644
index 0000000..28472b3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset.h	
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_fd_refcount;
+
+/* A grpc_pollset is a set of file descriptors that a higher level item is
+   interested in. For example:
+    - a server will typically keep a pollset containing all connected channels,
+      so that it can find new calls to service
+    - a completion queue might keep a pollset with an entry for each transport
+      that is servicing a call that it's tracking */
+
+typedef struct grpc_pollset grpc_pollset;
+typedef struct grpc_pollset_worker grpc_pollset_worker;
+
+typedef struct grpc_pollset_vtable {
+  void (*global_init)(void);
+  void (*global_shutdown)(void);
+  void (*init)(grpc_pollset* pollset, gpr_mu** mu);
+  void (*shutdown)(grpc_pollset* pollset, grpc_closure* closure);
+  void (*destroy)(grpc_pollset* pollset);
+  grpc_error* (*work)(grpc_pollset* pollset, grpc_pollset_worker** worker,
+                      grpc_millis deadline);
+  grpc_error* (*kick)(grpc_pollset* pollset,
+                      grpc_pollset_worker* specific_worker);
+  size_t (*pollset_size)(void);
+} grpc_pollset_vtable;
+
+void grpc_set_pollset_vtable(grpc_pollset_vtable* vtable);
+
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
+size_t grpc_pollset_size(void);
+/* Initialize a pollset: assumes *pollset contains all zeros */
+void grpc_pollset_init(grpc_pollset* pollset, gpr_mu** mu);
+/* Begin shutting down the pollset, and call closure when done.
+ * pollset's mutex must be held */
+void grpc_pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure);
+void grpc_pollset_destroy(grpc_pollset* pollset);
+
+/* Do some work on a pollset.
+   May involve invoking asynchronous callbacks, or actually polling file
+   descriptors.
+   Requires pollset's mutex locked.
+   May unlock its mutex during its execution.
+
+   worker is a (platform-specific) handle that can be used to wake up
+   from grpc_pollset_work before any events are received and before the timeout
+   has expired. It is both initialized and destroyed by grpc_pollset_work.
+   Initialization of worker is guaranteed to occur BEFORE the
+   pollset's mutex is released for the first time by grpc_pollset_work
+   and it is guaranteed that it will not be released by grpc_pollset_work
+   AFTER worker has been destroyed.
+
+   It's legal for worker to be NULL: in that case, this specific thread can not
+   be directly woken with a kick, but maybe be indirectly (with a kick against
+   the pollset as a whole).
+
+   Tries not to block past deadline.
+   May call grpc_closure_list_run on grpc_closure_list, without holding the
+   pollset
+   lock */
+grpc_error* grpc_pollset_work(grpc_pollset* pollset,
+                              grpc_pollset_worker** worker,
+                              grpc_millis deadline) GRPC_MUST_USE_RESULT;
+
+/* Break one polling thread out of polling work for this pollset.
+   If specific_worker is non-NULL, then kick that worker. */
+grpc_error* grpc_pollset_kick(grpc_pollset* pollset,
+                              grpc_pollset_worker* specific_worker)
+    GRPC_MUST_USE_RESULT;
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_custom.h
new file mode 100644
index 0000000..9e2027f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_custom.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+typedef struct grpc_custom_poller_vtable {
+  void (*init)();
+  void (*poll)(size_t timeout_ms);
+  void (*kick)();
+  void (*shutdown)();
+} grpc_custom_poller_vtable;
+
+void grpc_custom_pollset_init(grpc_custom_poller_vtable* vtable);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set.h
new file mode 100644
index 0000000..d3355b8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+
+/* A grpc_pollset_set is a set of pollsets that are interested in an
+   action. Adding a pollset to a pollset_set automatically adds any
+   fd's (etc) that have been registered with the set_set to that pollset.
+   Registering fd's automatically adds them to all current pollsets. */
+
+typedef struct grpc_pollset_set grpc_pollset_set;
+
+typedef struct grpc_pollset_set_vtable {
+  grpc_pollset_set* (*create)(void);
+  void (*destroy)(grpc_pollset_set* pollset_set);
+  void (*add_pollset)(grpc_pollset_set* pollset_set, grpc_pollset* pollset);
+  void (*del_pollset)(grpc_pollset_set* pollset_set, grpc_pollset* pollset);
+  void (*add_pollset_set)(grpc_pollset_set* bag, grpc_pollset_set* item);
+  void (*del_pollset_set)(grpc_pollset_set* bag, grpc_pollset_set* item);
+} grpc_pollset_set_vtable;
+
+void grpc_set_pollset_set_vtable(grpc_pollset_set_vtable* vtable);
+
+grpc_pollset_set* grpc_pollset_set_create(void);
+void grpc_pollset_set_destroy(grpc_pollset_set* pollset_set);
+void grpc_pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+void grpc_pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+void grpc_pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+void grpc_pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_custom.h
new file mode 100644
index 0000000..80e19a1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_custom.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+void grpc_custom_pollset_set_init();
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_windows.h
new file mode 100644
index 0000000..5ac9d18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_set_windows.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_windows.h
new file mode 100644
index 0000000..e89758c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/pollset_windows.h	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include "src/core/lib/iomgr/socket_windows.h"
+
+/* There isn't really any such thing as a pollset under Windows, due to the
+   nature of the IO completion ports. A Windows "pollset" is merely a mutex
+   used to synchronize with the IOCP, and workers are condition variables
+   used to block threads until work is ready. */
+
+typedef enum {
+  GRPC_POLLSET_WORKER_LINK_POLLSET = 0,
+  GRPC_POLLSET_WORKER_LINK_GLOBAL,
+  GRPC_POLLSET_WORKER_LINK_TYPES
+} grpc_pollset_worker_link_type;
+
+typedef struct grpc_pollset_worker_link {
+  struct grpc_pollset_worker* next;
+  struct grpc_pollset_worker* prev;
+} grpc_pollset_worker_link;
+
+struct grpc_pollset;
+typedef struct grpc_pollset grpc_pollset;
+
+typedef struct grpc_pollset_worker {
+  gpr_cv cv;
+  int kicked;
+  struct grpc_pollset* pollset;
+  grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES];
+} grpc_pollset_worker;
+
+struct grpc_pollset {
+  int shutting_down;
+  int kicked_without_pollers;
+  int is_iocp_worker;
+  grpc_pollset_worker root_worker;
+  grpc_closure* on_shutdown;
+};
+
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/port.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/port.h
new file mode 100644
index 0000000..1d2e950
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/port.h	
@@ -0,0 +1,243 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifndef GRPC_CORE_LIB_IOMGR_PORT_H
+#define GRPC_CORE_LIB_IOMGR_PORT_H
+
+#ifdef GRPC_UV
+#ifndef GRPC_CUSTOM_SOCKET
+#define GRPC_CUSTOM_SOCKET
+#endif
+#endif
+/* This needs to be separate from the other conditions because it needs to
+ * apply to custom sockets too */
+#ifdef GPR_WINDOWS
+#define GRPC_ARES_RESOLVE_LOCALHOST_MANUALLY 1
+#endif
+#if defined(GRPC_CUSTOM_SOCKET)
+// Do Nothing
+#elif defined(GPR_MANYLINUX1)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#define GRPC_LINUX_EPOLL 1
+#elif defined(GPR_WINDOWS)
+#define GRPC_WINSOCK_SOCKET 1
+#define GRPC_WINDOWS_SOCKETUTILS 1
+#define GRPC_WINDOWS_SOCKET_ARES_EV_DRIVER 1
+#elif defined(GPR_ANDROID)
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_LINUX_EVENTFD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_LINUX)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+/* Linux has TCP_INQ support since 4.18, but it is safe to set
+   the socket option on older kernels. */
+#define GRPC_HAVE_TCP_INQ 1
+#ifdef LINUX_VERSION_CODE
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)
+#define GRPC_LINUX_ERRQUEUE 1
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0) */
+#endif /* LINUX_VERSION_CODE */
+#define GRPC_LINUX_MULTIPOLL_WITH_EPOLL 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_HOST_NAME_MAX 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#ifdef __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 4)
+#define GRPC_LINUX_EPOLL 1
+#endif
+#if __GLIBC_PREREQ(2, 9)
+#define GRPC_LINUX_EPOLL_CREATE1 1
+#define GRPC_LINUX_EVENTFD 1
+#endif
+#if __GLIBC_PREREQ(2, 10)
+#define GRPC_LINUX_SOCKETUTILS 1
+#endif
+#endif
+#ifdef LINUX_VERSION_CODE
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)
+#define GRPC_HAVE_TCP_USER_TIMEOUT
+#ifdef __GLIBC_PREREQ
+#if !(__GLIBC_PREREQ(2, 17))
+/*
+ * TCP_USER_TIMEOUT wasn't imported to glibc until 2.17. Use Linux system
+ * header instead.
+ */
+#define GRPC_LINUX_TCP_H 1
+#endif /* __GLIBC_PREREQ(2, 17) */
+#endif /* ifdef __GLIBC_PREREQ */
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37) */
+#endif /* LINUX_VERSION_CODE */
+#ifndef __GLIBC__
+#define GRPC_LINUX_EPOLL 1
+#define GRPC_LINUX_EPOLL_CREATE1 1
+#define GRPC_LINUX_EVENTFD 1
+#define GRPC_MSG_IOVLEN_TYPE int
+#endif
+#ifndef GRPC_LINUX_EVENTFD
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#endif
+#ifndef GRPC_LINUX_SOCKETUTILS
+#define GRPC_POSIX_SOCKETUTILS
+#endif
+#elif defined(GPR_APPLE)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_SO_NOSIGPIPE 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_MSG_IOVLEN_TYPE int
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#ifdef GRPC_CFSTREAM
+#define GRPC_CFSTREAM_IOMGR 1
+#define GRPC_CFSTREAM_CLIENT 1
+#define GRPC_CFSTREAM_ENDPOINT 1
+#define GRPC_POSIX_SOCKET_ARES_EV_DRIVER 1
+#define GRPC_POSIX_SOCKET_EV 1
+#define GRPC_POSIX_SOCKET_EV_EPOLL1 1
+#define GRPC_POSIX_SOCKET_EV_EPOLLEX 1
+#define GRPC_POSIX_SOCKET_EV_POLL 1
+#define GRPC_POSIX_SOCKET_IF_NAMETOINDEX 1
+#define GRPC_POSIX_SOCKET_RESOLVE_ADDRESS 1
+#define GRPC_POSIX_SOCKET_SOCKADDR 1
+#define GRPC_POSIX_SOCKET_SOCKET_FACTORY 1
+#define GRPC_POSIX_SOCKET_TCP 1
+#define GRPC_POSIX_SOCKET_TCP_CLIENT 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON 1
+#define GRPC_POSIX_SOCKET_UDP_SERVER 1
+#define GRPC_POSIX_SOCKET_UTILS_COMMON 1
+#else
+#define GRPC_POSIX_SOCKET 1
+#endif
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_SYSCONF 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_FREEBSD)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_SO_NOSIGPIPE 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_OPENBSD)
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_SOLARIS)
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_AIX)
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_NACL)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_FUCHSIA)
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+// Zircon does not support the MSG_NOSIGNAL flag since it doesn't support
+// signals.
+#undef GRPC_HAVE_MSG_NOSIGNAL
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_WAKEUP_FD 1
+// TODO(rudominer) Check that this does something we want.
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETADDR 1
+// TODO(rudominer) Check this does something we want.
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_TIMER_USE_GENERIC 1
+#elif !defined(GPR_NO_AUTODETECT_PLATFORM)
+#error "Platform not recognized"
+#endif
+
+#if defined(GRPC_POSIX_SOCKET) + defined(GRPC_WINSOCK_SOCKET) + \
+        defined(GRPC_CUSTOM_SOCKET) + defined(GRPC_CFSTREAM) != \
+    1
+#error \
+    "Must define exactly one of GRPC_POSIX_SOCKET, GRPC_WINSOCK_SOCKET, GRPC_CUSTOM_SOCKET"
+#endif
+
+#ifdef GRPC_POSIX_SOCKET
+#define GRPC_POSIX_SOCKET_ARES_EV_DRIVER 1
+#define GRPC_POSIX_SOCKET_EV 1
+#define GRPC_POSIX_SOCKET_EV_EPOLLEX 1
+#define GRPC_POSIX_SOCKET_EV_POLL 1
+#define GRPC_POSIX_SOCKET_EV_EPOLL1 1
+#define GRPC_POSIX_SOCKET_IF_NAMETOINDEX 1
+#define GRPC_POSIX_SOCKET_IOMGR 1
+#define GRPC_POSIX_SOCKET_RESOLVE_ADDRESS 1
+#define GRPC_POSIX_SOCKET_SOCKADDR 1
+#define GRPC_POSIX_SOCKET_SOCKET_FACTORY 1
+#define GRPC_POSIX_SOCKET_TCP 1
+#define GRPC_POSIX_SOCKET_TCP_CLIENT 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON 1
+#define GRPC_POSIX_SOCKET_UDP_SERVER 1
+#define GRPC_POSIX_SOCKET_UTILS_COMMON 1
+#endif
+
+#if defined(GRPC_POSIX_HOST_NAME_MAX) && defined(GRPC_POSIX_SYSCONF)
+#error "Cannot define both GRPC_POSIX_HOST_NAME_MAX and GRPC_POSIX_SYSCONF"
+#endif
+#if !defined(GRPC_POSIX_HOST_NAME_MAX) && !defined(GRPC_POSIX_SYSCONF)
+#define GRPC_GETHOSTNAME_FALLBACK 1
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_PORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address.h
new file mode 100644
index 0000000..7016ffc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address.h	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
+#define GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+#include <uv.h>
+#endif
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include <ws2tcpip.h>
+#endif
+
+#if defined(GRPC_POSIX_SOCKET) || defined(GRPC_CFSTREAM)
+#include <sys/socket.h>
+#endif
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#define GRPC_MAX_SOCKADDR_SIZE 128
+
+typedef struct {
+  char addr[GRPC_MAX_SOCKADDR_SIZE];
+  socklen_t len;
+} grpc_resolved_address;
+
+typedef struct {
+  size_t naddrs;
+  grpc_resolved_address* addrs;
+} grpc_resolved_addresses;
+
+typedef struct grpc_address_resolver_vtable {
+  void (*resolve_address)(const char* addr, const char* default_port,
+                          grpc_pollset_set* interested_parties,
+                          grpc_closure* on_done,
+                          grpc_resolved_addresses** addresses);
+  grpc_error* (*blocking_resolve_address)(const char* name,
+                                          const char* default_port,
+                                          grpc_resolved_addresses** addresses);
+} grpc_address_resolver_vtable;
+
+void grpc_set_resolver_impl(grpc_address_resolver_vtable* vtable);
+
+/* Asynchronously resolve addr. Use default_port if a port isn't designated
+   in addr, otherwise use the port in addr. */
+/* TODO(apolcyn): add a timeout here */
+void grpc_resolve_address(const char* addr, const char* default_port,
+                          grpc_pollset_set* interested_parties,
+                          grpc_closure* on_done,
+                          grpc_resolved_addresses** addresses);
+
+/* Destroy resolved addresses */
+void grpc_resolved_addresses_destroy(grpc_resolved_addresses* addresses);
+
+/* Resolve addr in a blocking fashion. On success,
+   result must be freed with grpc_resolved_addresses_destroy. */
+grpc_error* grpc_blocking_resolve_address(const char* name,
+                                          const char* default_port,
+                                          grpc_resolved_addresses** addresses);
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address_custom.h
new file mode 100644
index 0000000..e0c6714
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resolve_address_custom.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+
+typedef struct grpc_custom_resolver grpc_custom_resolver;
+
+typedef struct grpc_custom_resolver_vtable {
+  grpc_error* (*resolve)(char* host, char* port, grpc_resolved_addresses** res);
+  void (*resolve_async)(grpc_custom_resolver* resolver, char* host, char* port);
+} grpc_custom_resolver_vtable;
+
+void grpc_custom_resolve_callback(grpc_custom_resolver* resolver,
+                                  grpc_resolved_addresses* result,
+                                  grpc_error* error);
+
+/* Internal APIs */
+void grpc_custom_resolver_init(grpc_custom_resolver_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resource_quota.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resource_quota.h
new file mode 100644
index 0000000..ec89a92
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/resource_quota.h	
@@ -0,0 +1,177 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H
+#define GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/closure.h"
+
+/** \file Tracks resource usage against a pool.
+
+    The current implementation tracks only memory usage, but in the future
+    this may be extended to (for example) threads and file descriptors.
+
+    A grpc_resource_quota represents the pooled resources, and
+    grpc_resource_user instances attach to the quota and consume those
+    resources. They also offer a vector for reclamation: if we become
+    resource constrained, grpc_resource_user instances are asked (in turn) to
+    free up whatever they can so that the system as a whole can make progress.
+
+    There are three kinds of reclamation that take place, in order of increasing
+    invasiveness:
+    - an internal reclamation, where cached resource at the resource user level
+      is returned to the quota
+    - a benign reclamation phase, whereby resources that are in use but are not
+      helping anything make progress are reclaimed
+    - a destructive reclamation, whereby resources that are helping something
+      make progress may be enacted so that at least one part of the system can
+      complete.
+
+    Only one reclamation will be outstanding for a given quota at a given time.
+    On each reclamation attempt, the kinds of reclamation are tried in order of
+    increasing invasiveness, stopping at the first one that succeeds. Thus, on a
+    given reclamation attempt, if internal and benign reclamation both fail, it
+    will wind up doing a destructive reclamation. However, the next reclamation
+    attempt may then be able to get what it needs via internal or benign
+    reclamation, due to resources that may have been freed up by the destructive
+    reclamation in the previous attempt.
+
+    Future work will be to expose the current resource pressure so that back
+    pressure can be applied to avoid reclamation phases starting.
+
+    Resource users own references to resource quotas, and resource quotas
+    maintain lists of users (which users arrange to leave before they are
+    destroyed) */
+
+extern grpc_core::TraceFlag grpc_resource_quota_trace;
+
+// TODO(juanlishen): This is a hack. We need to do real accounting instead of
+// hard coding.
+constexpr size_t GRPC_RESOURCE_QUOTA_CALL_SIZE = 15 * 1024;
+constexpr size_t GRPC_RESOURCE_QUOTA_CHANNEL_SIZE = 50 * 1024;
+
+grpc_resource_quota* grpc_resource_quota_ref_internal(
+    grpc_resource_quota* resource_quota);
+void grpc_resource_quota_unref_internal(grpc_resource_quota* resource_quota);
+grpc_resource_quota* grpc_resource_quota_from_channel_args(
+    const grpc_channel_args* channel_args, bool create = true);
+
+/* Return a number indicating current memory pressure:
+   0.0 ==> no memory usage
+   1.0 ==> maximum memory usage */
+double grpc_resource_quota_get_memory_pressure(
+    grpc_resource_quota* resource_quota);
+
+size_t grpc_resource_quota_peek_size(grpc_resource_quota* resource_quota);
+
+typedef struct grpc_resource_user grpc_resource_user;
+
+grpc_resource_user* grpc_resource_user_create(
+    grpc_resource_quota* resource_quota, const char* name);
+
+/* Returns a borrowed reference to the underlying resource quota for this
+   resource user. */
+grpc_resource_quota* grpc_resource_user_quota(
+    grpc_resource_user* resource_user);
+
+void grpc_resource_user_ref(grpc_resource_user* resource_user);
+void grpc_resource_user_unref(grpc_resource_user* resource_user);
+void grpc_resource_user_shutdown(grpc_resource_user* resource_user);
+
+/* Attempts to get quota from the resource_user to create 'thread_count' number
+ * of threads. Returns true if successful (i.e the caller is now free to create
+ * 'thread_count' number of threads) or false if quota is not available */
+bool grpc_resource_user_allocate_threads(grpc_resource_user* resource_user,
+                                         int thread_count);
+/* Releases 'thread_count' worth of quota back to the resource user. The quota
+ * should have been previously obtained successfully by calling
+ * grpc_resource_user_allocate_threads().
+ *
+ * Note: There need not be an exact one-to-one correspondence between
+ * grpc_resource_user_allocate_threads() and grpc_resource_user_free_threads()
+ * calls. The only requirement is that the number of threads allocated should
+ * all be eventually released */
+void grpc_resource_user_free_threads(grpc_resource_user* resource_user,
+                                     int thread_count);
+
+/* Allocates from the resource user 'size' worth of memory if this won't exceed
+ * the resource quota's total size. Returns whether the allocation is done
+ * successfully. If allocated successfully, the memory should be freed by the
+ * caller eventually. */
+bool grpc_resource_user_safe_alloc(grpc_resource_user* resource_user,
+                                   size_t size);
+/* Allocates from the resource user 'size' worth of memory.
+ * If optional_on_done is NULL, then allocate immediately. This may push the
+ * quota over-limit, at which point reclamation will kick in. The caller is
+ * always responsible to free the memory eventually.
+ * Returns true if the allocation was successful. Otherwise, if optional_on_done
+ * is non-NULL, it will be scheduled without error when the allocation has been
+ * granted by the quota, and the caller is responsible to free the memory
+ * eventually. Or it may be scheduled with an error, in which case the caller
+ * fails to allocate the memory and shouldn't free the memory.
+ */
+bool grpc_resource_user_alloc(grpc_resource_user* resource_user, size_t size,
+                              grpc_closure* optional_on_done)
+    GRPC_MUST_USE_RESULT;
+/* Release memory back to the quota */
+void grpc_resource_user_free(grpc_resource_user* resource_user, size_t size);
+/* Post a memory reclaimer to the resource user. Only one benign and one
+   destructive reclaimer can be posted at once. When executed, the reclaimer
+   MUST call grpc_resource_user_finish_reclamation before it completes, to
+   return control to the resource quota. */
+void grpc_resource_user_post_reclaimer(grpc_resource_user* resource_user,
+                                       bool destructive, grpc_closure* closure);
+/* Finish a reclamation step */
+void grpc_resource_user_finish_reclamation(grpc_resource_user* resource_user);
+
+/* Helper to allocate slices from a resource user */
+typedef struct grpc_resource_user_slice_allocator {
+  /* Closure for when a resource user allocation completes */
+  grpc_closure on_allocated;
+  /* Closure to call when slices have been allocated */
+  grpc_closure on_done;
+  /* Length of slices to allocate on the current request */
+  size_t length;
+  /* Number of slices to allocate on the current request */
+  size_t count;
+  /* Destination for slices to allocate on the current request */
+  grpc_slice_buffer* dest;
+  /* Parent resource user */
+  grpc_resource_user* resource_user;
+} grpc_resource_user_slice_allocator;
+
+/* Initialize a slice allocator.
+   When an allocation is completed, calls \a cb with arg \p. */
+void grpc_resource_user_slice_allocator_init(
+    grpc_resource_user_slice_allocator* slice_allocator,
+    grpc_resource_user* resource_user, grpc_iomgr_cb_func cb, void* p);
+
+/* Allocate \a count slices of length \a length into \a dest. Only one request
+   can be outstanding at a time.
+   Returns whether the slice was allocated inline in the function. If true,
+   the \a slice_allocator->on_allocated callback will not be called. */
+bool grpc_resource_user_alloc_slices(
+    grpc_resource_user_slice_allocator* slice_allocator, size_t length,
+    size_t count, grpc_slice_buffer* dest) GRPC_MUST_USE_RESULT;
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr.h
new file mode 100644
index 0000000..5edf735
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This header transitively includes other headers that care about include
+ * order, so it should be included first. As a consequence, it should not be
+ * included in any other header. */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/sockaddr_custom.h"
+#include "src/core/lib/iomgr/sockaddr_posix.h"
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_custom.h
new file mode 100644
index 0000000..d85cc50
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_custom.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <uv.h>
+
+// TODO(kpayson)  It would be nice to abstract this so we don't
+// depend on anything uv specific
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif  // GRPC_UV
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_posix.h
new file mode 100644
index 0000000..3cedd90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_posix.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_SOCKADDR
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_utils.h
new file mode 100644
index 0000000..a4e90a7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_utils.h	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Returns true if addr is an IPv4-mapped IPv6 address within the
+   ::ffff:0.0.0.0/96 range, or false otherwise.
+
+   If addr4_out is non-NULL, the inner IPv4 address will be copied here when
+   returning true. */
+int grpc_sockaddr_is_v4mapped(const grpc_resolved_address* addr,
+                              grpc_resolved_address* addr4_out);
+
+/* If addr is an AF_INET address, writes the corresponding ::ffff:0.0.0.0/96
+   address to addr6_out and returns true.  Otherwise returns false. */
+int grpc_sockaddr_to_v4mapped(const grpc_resolved_address* addr,
+                              grpc_resolved_address* addr6_out);
+
+/* If addr is ::, 0.0.0.0, or ::ffff:0.0.0.0, writes the port number to
+ *port_out (if not NULL) and returns true, otherwise returns false. */
+int grpc_sockaddr_is_wildcard(const grpc_resolved_address* addr, int* port_out);
+
+/* Writes 0.0.0.0:port and [::]:port to separate sockaddrs. */
+void grpc_sockaddr_make_wildcards(int port, grpc_resolved_address* wild4_out,
+                                  grpc_resolved_address* wild6_out);
+
+/* Writes 0.0.0.0:port. */
+void grpc_sockaddr_make_wildcard4(int port, grpc_resolved_address* wild_out);
+
+/* Writes [::]:port. */
+void grpc_sockaddr_make_wildcard6(int port, grpc_resolved_address* wild_out);
+
+/* Return the IP port number of a sockaddr */
+int grpc_sockaddr_get_port(const grpc_resolved_address* addr);
+
+/* Set IP port number of a sockaddr */
+int grpc_sockaddr_set_port(const grpc_resolved_address* addr, int port);
+
+/* Converts a sockaddr into a newly-allocated human-readable string.
+
+   Currently, only the AF_INET and AF_INET6 families are recognized.
+   If the normalize flag is enabled, ::ffff:0.0.0.0/96 IPv6 addresses are
+   displayed as plain IPv4.
+
+   Usage is similar to gpr_asprintf: returns the number of bytes written
+   (excluding the final '\0'), and *out points to a string which must later be
+   destroyed using gpr_free().
+
+   In the unlikely event of an error, returns -1 and sets *out to NULL.
+   The existing value of errno is always preserved. */
+int grpc_sockaddr_to_string(char** out, const grpc_resolved_address* addr,
+                            int normalize);
+
+void grpc_string_to_sockaddr(grpc_resolved_address* out, char* addr, int port);
+
+/* Returns the URI string corresponding to \a addr */
+char* grpc_sockaddr_to_uri(const grpc_resolved_address* addr);
+
+/* Returns the URI scheme corresponding to \a addr */
+const char* grpc_sockaddr_get_uri_scheme(const grpc_resolved_address* addr);
+
+int grpc_sockaddr_get_family(const grpc_resolved_address* resolved_addr);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_windows.h
new file mode 100644
index 0000000..4d63725
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sockaddr_windows.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+// must be included after the above
+#include <mswsock.h>
+
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_factory_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_factory_posix.h
new file mode 100644
index 0000000..9a52f4e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_factory_posix.h	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/** The virtual table of grpc_socket_factory */
+typedef struct {
+  /** Replacement for socket(2) */
+  int (*socket)(grpc_socket_factory* factory, int domain, int type,
+                int protocol);
+  /** Replacement for bind(2) */
+  int (*bind)(grpc_socket_factory* factory, int sockfd,
+              const grpc_resolved_address* addr);
+  /** Compare socket factory \a a and \a b */
+  int (*compare)(grpc_socket_factory* a, grpc_socket_factory* b);
+  /** Destroys the socket factory instance */
+  void (*destroy)(grpc_socket_factory* factory);
+} grpc_socket_factory_vtable;
+
+/** The Socket Factory interface allows changes on socket options */
+struct grpc_socket_factory {
+  const grpc_socket_factory_vtable* vtable;
+  gpr_refcount refcount;
+};
+
+/** called by concrete implementations to initialize the base struct */
+void grpc_socket_factory_init(grpc_socket_factory* factory,
+                              const grpc_socket_factory_vtable* vtable);
+
+/** Wrap \a factory as a grpc_arg */
+grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory* factory);
+
+/** Perform the equivalent of a socket(2) operation using \a factory */
+int grpc_socket_factory_socket(grpc_socket_factory* factory, int domain,
+                               int type, int protocol);
+
+/** Perform the equivalent of a bind(2) operation using \a factory */
+int grpc_socket_factory_bind(grpc_socket_factory* factory, int sockfd,
+                             const grpc_resolved_address* addr);
+
+/** Compare if \a a and \a b are the same factory or have same settings */
+int grpc_socket_factory_compare(grpc_socket_factory* a, grpc_socket_factory* b);
+
+grpc_socket_factory* grpc_socket_factory_ref(grpc_socket_factory* factory);
+void grpc_socket_factory_unref(grpc_socket_factory* factory);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_mutator.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_mutator.h
new file mode 100644
index 0000000..8742a3b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_mutator.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+
+#include <stdbool.h>
+
+/** The virtual table of grpc_socket_mutator */
+typedef struct {
+  /** Mutates the socket options of \a fd */
+  bool (*mutate_fd)(int fd, grpc_socket_mutator* mutator);
+  /** Compare socket mutator \a a and \a b */
+  int (*compare)(grpc_socket_mutator* a, grpc_socket_mutator* b);
+  /** Destroys the socket mutator instance */
+  void (*destroy)(grpc_socket_mutator* mutator);
+} grpc_socket_mutator_vtable;
+
+/** The Socket Mutator interface allows changes on socket options */
+struct grpc_socket_mutator {
+  const grpc_socket_mutator_vtable* vtable;
+  gpr_refcount refcount;
+};
+
+/** called by concrete implementations to initialize the base struct */
+void grpc_socket_mutator_init(grpc_socket_mutator* mutator,
+                              const grpc_socket_mutator_vtable* vtable);
+
+/** Wrap \a mutator as a grpc_arg */
+grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator* mutator);
+
+/** Perform the file descriptor mutation operation of \a mutator on \a fd */
+bool grpc_socket_mutator_mutate_fd(grpc_socket_mutator* mutator, int fd);
+
+/** Compare if \a a and \a b are the same mutator or have same settings */
+int grpc_socket_mutator_compare(grpc_socket_mutator* a, grpc_socket_mutator* b);
+
+grpc_socket_mutator* grpc_socket_mutator_ref(grpc_socket_mutator* mutator);
+void grpc_socket_mutator_unref(grpc_socket_mutator* mutator);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils.h
new file mode 100644
index 0000000..14bb081
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+// TODO(juanlishen): The following functions might be simple enough to implement
+// ourselves, so that they don't cause any portability hassle.
+
+/* A wrapper for htons on POSIX and Windows */
+uint16_t grpc_htons(uint16_t hostshort);
+
+/* A wrapper for ntohs on POSIX and WINDOWS */
+uint16_t grpc_ntohs(uint16_t netshort);
+
+/* A wrapper for htonl on POSIX and Windows */
+uint32_t grpc_htonl(uint32_t hostlong);
+
+/* A wrapper for ntohl on POSIX and WINDOWS */
+uint32_t grpc_ntohl(uint32_t netlong);
+
+/* A wrapper for inet_pton on POSIX and WINDOWS */
+int grpc_inet_pton(int af, const char* src, void* dst);
+
+/* A wrapper for inet_ntop on POSIX systems and InetNtop on Windows systems */
+const char* grpc_inet_ntop(int af, const void* src, char* dst, size_t size);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils_posix.h
new file mode 100644
index 0000000..734d340
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_utils_posix.h	
@@ -0,0 +1,160 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
+#include "src/core/lib/iomgr/socket_mutator.h"
+
+#ifdef GRPC_LINUX_ERRQUEUE
+#ifndef SO_ZEROCOPY
+#define SO_ZEROCOPY 60
+#endif
+#ifndef SO_EE_ORIGIN_ZEROCOPY
+#define SO_EE_ORIGIN_ZEROCOPY 5
+#endif
+#endif /* ifdef GRPC_LINUX_ERRQUEUE */
+
+/* a wrapper for accept or accept4 */
+int grpc_accept4(int sockfd, grpc_resolved_address* resolved_addr, int nonblock,
+                 int cloexec);
+
+/* set a socket to use zerocopy */
+grpc_error* grpc_set_socket_zerocopy(int fd);
+
+/* set a socket to non blocking mode */
+grpc_error* grpc_set_socket_nonblocking(int fd, int non_blocking);
+
+/* set a socket to close on exec */
+grpc_error* grpc_set_socket_cloexec(int fd, int close_on_exec);
+
+/* set a socket to reuse old addresses */
+grpc_error* grpc_set_socket_reuse_addr(int fd, int reuse);
+
+/* return true if SO_REUSEPORT is supported */
+bool grpc_is_socket_reuse_port_supported();
+
+/* disable nagle */
+grpc_error* grpc_set_socket_low_latency(int fd, int low_latency);
+
+/* set SO_REUSEPORT */
+grpc_error* grpc_set_socket_reuse_port(int fd, int reuse);
+
+/* Configure the default values for TCP_USER_TIMEOUT */
+void config_default_tcp_user_timeout(bool enable, int timeout, bool is_client);
+
+/* Set TCP_USER_TIMEOUT */
+grpc_error* grpc_set_socket_tcp_user_timeout(
+    int fd, const grpc_channel_args* channel_args, bool is_client);
+
+/* Returns true if this system can create AF_INET6 sockets bound to ::1.
+   The value is probed once, and cached for the life of the process.
+
+   This is more restrictive than checking for socket(AF_INET6) to succeed,
+   because Linux with "net.ipv6.conf.all.disable_ipv6 = 1" is able to create
+   and bind IPv6 sockets, but cannot connect to a getsockname() of [::]:port
+   without a valid loopback interface.  Rather than expose this half-broken
+   state to library users, we turn off IPv6 sockets. */
+int grpc_ipv6_loopback_available(void);
+
+/* Tries to set SO_NOSIGPIPE if available on this platform.
+   If SO_NO_SIGPIPE is not available, returns 1. */
+grpc_error* grpc_set_socket_no_sigpipe_if_possible(int fd);
+
+/* Tries to set IP_PKTINFO if available on this platform.
+   If IP_PKTINFO is not available, returns 1. */
+grpc_error* grpc_set_socket_ip_pktinfo_if_possible(int fd);
+
+/* Tries to set IPV6_RECVPKTINFO if available on this platform.
+   If IPV6_RECVPKTINFO is not available, returns 1. */
+grpc_error* grpc_set_socket_ipv6_recvpktinfo_if_possible(int fd);
+
+/* Tries to set the socket's send buffer to given size. */
+grpc_error* grpc_set_socket_sndbuf(int fd, int buffer_size_bytes);
+
+/* Tries to set the socket's receive buffer to given size. */
+grpc_error* grpc_set_socket_rcvbuf(int fd, int buffer_size_bytes);
+
+/* Tries to set the socket using a grpc_socket_mutator */
+grpc_error* grpc_set_socket_with_mutator(int fd, grpc_socket_mutator* mutator);
+
+/* Extracts the first socket mutator from args if any and applies on the fd. */
+grpc_error* grpc_apply_socket_mutator_in_args(int fd,
+                                              const grpc_channel_args* args);
+
+/* An enum to keep track of IPv4/IPv6 socket modes.
+
+   Currently, this information is only used when a socket is first created, but
+   in the future we may wish to store it alongside the fd.  This would let calls
+   like sendto() know which family to use without asking the kernel first. */
+typedef enum grpc_dualstack_mode {
+  /* Uninitialized, or a non-IP socket. */
+  GRPC_DSMODE_NONE,
+  /* AF_INET only. */
+  GRPC_DSMODE_IPV4,
+  /* AF_INET6 only, because IPV6_V6ONLY could not be cleared. */
+  GRPC_DSMODE_IPV6,
+  /* AF_INET6, which also supports ::ffff-mapped IPv4 addresses. */
+  GRPC_DSMODE_DUALSTACK
+} grpc_dualstack_mode;
+
+/* Only tests should use this flag. */
+extern int grpc_forbid_dualstack_sockets_for_testing;
+
+/* Creates a new socket for connecting to (or listening on) an address.
+
+   If addr is AF_INET6, this creates an IPv6 socket first.  If that fails,
+   and addr is within ::ffff:0.0.0.0/96, then it automatically falls back to
+   an IPv4 socket.
+
+   If addr is AF_INET, AF_UNIX, or anything else, then this is similar to
+   calling socket() directly.
+
+   Returns an fd on success, otherwise returns -1 with errno set to the result
+   of a failed socket() call.
+
+   The *dsmode output indicates which address family was actually created.
+   The recommended way to use this is:
+   - First convert to IPv6 using grpc_sockaddr_to_v4mapped().
+   - Create the socket.
+   - If *dsmode is IPV4, use grpc_sockaddr_is_v4mapped() to convert back to
+     IPv4, so that bind() or connect() see the correct family.
+   Also, it's important to distinguish between DUALSTACK and IPV6 when
+   listening on the [::] wildcard address. */
+grpc_error* grpc_create_dualstack_socket(const grpc_resolved_address* addr,
+                                         int type, int protocol,
+                                         grpc_dualstack_mode* dsmode,
+                                         int* newfd);
+
+/* Same as grpc_create_dualstack_socket(), but use the given socket factory (if
+   non-null) to create the socket, rather than calling socket() directly. */
+grpc_error* grpc_create_dualstack_socket_using_factory(
+    grpc_socket_factory* factory, const grpc_resolved_address* addr, int type,
+    int protocol, grpc_dualstack_mode* dsmode, int* newfd);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_windows.h
new file mode 100644
index 0000000..78f7945
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/socket_windows.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include <winsock2.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+
+#ifndef WSA_FLAG_NO_HANDLE_INHERIT
+#define WSA_FLAG_NO_HANDLE_INHERIT 0x80
+#endif
+
+/* This holds the data for an outstanding read or write on a socket.
+   The mutex to protect the concurrent access to that data is the one
+   inside the winsocket wrapper. */
+typedef struct grpc_winsocket_callback_info {
+  /* This is supposed to be a WSAOVERLAPPED, but in order to get that
+     definition, we need to include ws2tcpip.h, which needs to be included
+     from the top, otherwise it'll clash with a previous inclusion of
+     windows.h that in turns includes winsock.h. If anyone knows a way
+     to do it properly, feel free to send a patch. */
+  OVERLAPPED overlapped;
+  /* The callback information for the pending operation. May be empty if the
+     caller hasn't registered a callback yet. */
+  grpc_closure* closure;
+  /* A boolean to describe if the IO Completion Port got a notification for
+     that operation. This will happen if the operation completed before the
+     called had time to register a callback. We could avoid that behavior
+     altogether by forcing the caller to always register its callback before
+     proceeding queue an operation, but it is frequent for an IO Completion
+     Port to trigger quickly. This way we avoid a context switch for calling
+     the callback. We also simplify the read / write operations to avoid having
+     to hold a mutex for a long amount of time. */
+  int has_pending_iocp;
+  /* The results of the overlapped operation. */
+  DWORD bytes_transferred;
+  int wsa_error;
+} grpc_winsocket_callback_info;
+
+/* This is a wrapper to a Windows socket. A socket can have one outstanding
+   read, and one outstanding write. Doing an asynchronous accept means waiting
+   for a read operation. Doing an asynchronous connect means waiting for a
+   write operation. These are completely arbitrary ties between the operation
+   and the kind of event, because we can have one overlapped per pending
+   operation, whichever its nature is. So we could have more dedicated pending
+   operation callbacks for connect and listen. But given the scope of listen
+   and accept, we don't need to go to that extent and waste memory. Also, this
+   is closer to what happens in posix world. */
+typedef struct grpc_winsocket {
+  SOCKET socket;
+  bool destroy_called;
+
+  grpc_winsocket_callback_info write_info;
+  grpc_winsocket_callback_info read_info;
+
+  gpr_mu state_mu;
+  bool shutdown_called;
+
+  /* You can't add the same socket twice to the same IO Completion Port.
+     This prevents that. */
+  int added_to_iocp;
+
+  grpc_closure shutdown_closure;
+
+  /* A label for iomgr to track outstanding objects */
+  grpc_iomgr_object iomgr_object;
+} grpc_winsocket;
+
+/* Create a wrapped windows handle. This takes ownership of it, meaning that
+   it will be responsible for closing it. */
+grpc_winsocket* grpc_winsocket_create(SOCKET socket, const char* name);
+
+SOCKET grpc_winsocket_wrapped_socket(grpc_winsocket* socket);
+
+/* Initiate an asynchronous shutdown of the socket. Will call off any pending
+   operation to cancel them. */
+void grpc_winsocket_shutdown(grpc_winsocket* socket);
+
+/* Destroy a socket. Should only be called if there's no pending operation. */
+void grpc_winsocket_destroy(grpc_winsocket* socket);
+
+void grpc_socket_notify_on_write(grpc_winsocket* winsocket,
+                                 grpc_closure* closure);
+
+void grpc_socket_notify_on_read(grpc_winsocket* winsocket,
+                                grpc_closure* closure);
+
+void grpc_socket_become_ready(grpc_winsocket* winsocket,
+                              grpc_winsocket_callback_info* ci);
+
+/* Returns true if this system can create AF_INET6 sockets bound to ::1.
+   The value is probed once, and cached for the life of the process. */
+int grpc_ipv6_loopback_available(void);
+
+void grpc_wsa_socket_flags_init();
+
+DWORD grpc_get_default_wsa_socket_flags();
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sys_epoll_wrapper.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sys_epoll_wrapper.h
new file mode 100644
index 0000000..d21d853
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/sys_epoll_wrapper.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H
+#define GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <sys/epoll.h>
+
+#ifndef EPOLLEXCLUSIVE
+#define EPOLLEXCLUSIVE (1 << 28)
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client.h
new file mode 100644
index 0000000..d209eeb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+typedef struct grpc_tcp_client_vtable {
+  void (*connect)(grpc_closure* on_connect, grpc_endpoint** endpoint,
+                  grpc_pollset_set* interested_parties,
+                  const grpc_channel_args* channel_args,
+                  const grpc_resolved_address* addr, grpc_millis deadline);
+} grpc_tcp_client_vtable;
+
+/* Asynchronously connect to an address (specified as (addr, len)), and call
+   cb with arg and the completed connection when done (or call cb with arg and
+   NULL on failure).
+   interested_parties points to a set of pollsets that would be interested
+   in this connection being established (in order to continue their work) */
+void grpc_tcp_client_connect(grpc_closure* on_connect, grpc_endpoint** endpoint,
+                             grpc_pollset_set* interested_parties,
+                             const grpc_channel_args* channel_args,
+                             const grpc_resolved_address* addr,
+                             grpc_millis deadline);
+
+void grpc_tcp_client_global_init();
+
+void grpc_set_tcp_client_impl(grpc_tcp_client_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client_posix.h
new file mode 100644
index 0000000..6f61866
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_client_posix.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+
+/* Create an endpoint from a connected grpc_fd.
+
+   fd: a connected FD. Ownership is taken.
+   channel_args: may contain custom settings for the endpoint
+   addr_str: destination address in printable format
+   Returns: a new endpoint
+*/
+grpc_endpoint* grpc_tcp_client_create_from_fd(
+    grpc_fd* fd, const grpc_channel_args* channel_args, const char* addr_str);
+
+/* Return a configured, unbound, unconnected TCP client fd.
+
+   channel_args: may contain custom settings for the fd
+   addr: the destination address
+   mapped_addr: out parameter. addr mapped to an address appropriate to the
+     type of socket FD created. For example, if addr is IPv4 and dual stack
+     sockets are available, mapped_addr will be an IPv4-mapped IPv6 address
+   fd: out parameter. The new FD
+   Returns: error, if any. Out parameters are not set on error
+*/
+grpc_error* grpc_tcp_client_prepare_fd(const grpc_channel_args* channel_args,
+                                       const grpc_resolved_address* addr,
+                                       grpc_resolved_address* mapped_addr,
+                                       int* fd);
+
+/* Connect a configured TCP client fd.
+
+   interested_parties: a set of pollsets that would be interested in this
+     connection being established (in order to continue their work
+   closure: called when complete. On success, *ep will be set.
+   fd: an FD returned from grpc_tcp_client_prepare_fd().
+   channel_args: may contain custom settings for the endpoint
+   deadline: connection deadline
+   ep: out parameter. Set before closure is called if successful
+*/
+void grpc_tcp_client_create_from_prepared_fd(
+    grpc_pollset_set* interested_parties, grpc_closure* closure, const int fd,
+    const grpc_channel_args* channel_args, const grpc_resolved_address* addr,
+    grpc_millis deadline, grpc_endpoint** ep);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_custom.h
new file mode 100644
index 0000000..fd2cb03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_custom.h	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+
+// Same number as the micro of SO_REUSEPORT in kernel
+#define GRPC_CUSTOM_SOCKET_OPT_SO_REUSEPORT (0x00000200u)
+
+typedef struct grpc_tcp_listener grpc_tcp_listener;
+typedef struct grpc_custom_tcp_connect grpc_custom_tcp_connect;
+
+typedef struct grpc_custom_socket {
+  // Implementation defined
+  void* impl;
+  grpc_endpoint* endpoint;
+  grpc_tcp_listener* listener;
+  grpc_custom_tcp_connect* connector;
+  int refs;
+} grpc_custom_socket;
+
+typedef void (*grpc_custom_connect_callback)(grpc_custom_socket* socket,
+                                             grpc_error* error);
+typedef void (*grpc_custom_write_callback)(grpc_custom_socket* socket,
+                                           grpc_error* error);
+typedef void (*grpc_custom_read_callback)(grpc_custom_socket* socket,
+                                          size_t nread, grpc_error* error);
+typedef void (*grpc_custom_accept_callback)(grpc_custom_socket* socket,
+                                            grpc_custom_socket* client,
+                                            grpc_error* error);
+typedef void (*grpc_custom_close_callback)(grpc_custom_socket* socket);
+
+typedef struct grpc_socket_vtable {
+  grpc_error* (*init)(grpc_custom_socket* socket, int domain);
+  void (*connect)(grpc_custom_socket* socket, const grpc_sockaddr* addr,
+                  size_t len, grpc_custom_connect_callback cb);
+  void (*destroy)(grpc_custom_socket* socket);
+  void (*shutdown)(grpc_custom_socket* socket);
+  void (*close)(grpc_custom_socket* socket, grpc_custom_close_callback cb);
+  void (*write)(grpc_custom_socket* socket, grpc_slice_buffer* slices,
+                grpc_custom_write_callback cb);
+  void (*read)(grpc_custom_socket* socket, char* buffer, size_t length,
+               grpc_custom_read_callback cb);
+  grpc_error* (*getpeername)(grpc_custom_socket* socket,
+                             const grpc_sockaddr* addr, int* len);
+  grpc_error* (*getsockname)(grpc_custom_socket* socket,
+                             const grpc_sockaddr* addr, int* len);
+  grpc_error* (*bind)(grpc_custom_socket* socket, const grpc_sockaddr* addr,
+                      size_t len, int flags);
+  grpc_error* (*listen)(grpc_custom_socket* socket);
+  void (*accept)(grpc_custom_socket* socket, grpc_custom_socket* client,
+                 grpc_custom_accept_callback cb);
+} grpc_socket_vtable;
+
+/* Internal APIs */
+void grpc_custom_endpoint_init(grpc_socket_vtable* impl);
+
+void grpc_custom_close_server_callback(grpc_tcp_listener* listener);
+
+grpc_endpoint* custom_tcp_endpoint_create(grpc_custom_socket* socket,
+                                          grpc_resource_quota* resource_quota,
+                                          char* peer_string);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_posix.h
new file mode 100644
index 0000000..eff825c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_posix.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/buffer_list.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+/* Create a tcp endpoint given a file desciptor and a read slice size.
+   Takes ownership of fd. */
+grpc_endpoint* grpc_tcp_create(grpc_fd* fd, const grpc_channel_args* args,
+                               const char* peer_string);
+
+/* Return the tcp endpoint's fd, or -1 if this is not available. Does not
+   release the fd.
+   Requires: ep must be a tcp endpoint.
+ */
+int grpc_tcp_fd(grpc_endpoint* ep);
+
+/* Destroy the tcp endpoint without closing its fd. *fd will be set and done
+ * will be called when the endpoint is destroyed.
+ * Requires: ep must be a tcp endpoint and fd must not be NULL. */
+void grpc_tcp_destroy_and_release_fd(grpc_endpoint* ep, int* fd,
+                                     grpc_closure* done);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server.h
new file mode 100644
index 0000000..0af8a79
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Forward decl of grpc_tcp_server */
+typedef struct grpc_tcp_server grpc_tcp_server;
+
+typedef struct grpc_tcp_server_acceptor {
+  /* grpc_tcp_server_cb functions share a ref on from_server that is valid
+     until the function returns. */
+  grpc_tcp_server* from_server;
+  /* Indices that may be passed to grpc_tcp_server_port_fd(). */
+  unsigned port_index;
+  unsigned fd_index;
+  /* Data when the connection is passed to tcp_server from external. */
+  bool external_connection;
+  int listener_fd;
+  grpc_byte_buffer* pending_data;
+} grpc_tcp_server_acceptor;
+
+/* Called for newly connected TCP connections.
+   Takes ownership of acceptor. */
+typedef void (*grpc_tcp_server_cb)(void* arg, grpc_endpoint* ep,
+                                   grpc_pollset* accepting_pollset,
+                                   grpc_tcp_server_acceptor* acceptor);
+namespace grpc_core {
+// An interface for a handler to take a externally connected fd as a internal
+// connection.
+class TcpServerFdHandler {
+ public:
+  virtual ~TcpServerFdHandler() = default;
+  virtual void Handle(int listener_fd, int fd,
+                      grpc_byte_buffer* pending_read) = 0;
+};
+}  // namespace grpc_core
+
+typedef struct grpc_tcp_server_vtable {
+  grpc_error* (*create)(grpc_closure* shutdown_complete,
+                        const grpc_channel_args* args,
+                        grpc_tcp_server** server);
+  void (*start)(grpc_tcp_server* server, grpc_pollset** pollsets,
+                size_t pollset_count, grpc_tcp_server_cb on_accept_cb,
+                void* cb_arg);
+  grpc_error* (*add_port)(grpc_tcp_server* s, const grpc_resolved_address* addr,
+                          int* out_port);
+  grpc_core::TcpServerFdHandler* (*create_fd_handler)(grpc_tcp_server* s);
+  unsigned (*port_fd_count)(grpc_tcp_server* s, unsigned port_index);
+  int (*port_fd)(grpc_tcp_server* s, unsigned port_index, unsigned fd_index);
+  grpc_tcp_server* (*ref)(grpc_tcp_server* s);
+  void (*shutdown_starting_add)(grpc_tcp_server* s,
+                                grpc_closure* shutdown_starting);
+  void (*unref)(grpc_tcp_server* s);
+  void (*shutdown_listeners)(grpc_tcp_server* s);
+} grpc_tcp_server_vtable;
+
+/* Create a server, initially not bound to any ports. The caller owns one ref.
+   If shutdown_complete is not NULL, it will be used by
+   grpc_tcp_server_unref() when the ref count reaches zero. */
+grpc_error* grpc_tcp_server_create(grpc_closure* shutdown_complete,
+                                   const grpc_channel_args* args,
+                                   grpc_tcp_server** server);
+
+/* Start listening to bound ports */
+void grpc_tcp_server_start(grpc_tcp_server* server, grpc_pollset** pollsets,
+                           size_t pollset_count,
+                           grpc_tcp_server_cb on_accept_cb, void* cb_arg);
+
+/* Add a port to the server, returning the newly allocated port on success, or
+   -1 on failure.
+
+   The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
+   both IPv4 and IPv6 connections, but :: is the preferred style.  This usually
+   creates one socket, but possibly two on systems which support IPv6,
+   but not dualstack sockets. */
+/* TODO(ctiller): deprecate this, and make grpc_tcp_server_add_ports to handle
+                  all of the multiple socket port matching logic in one place */
+grpc_error* grpc_tcp_server_add_port(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     int* out_port);
+
+/* Create and return a TcpServerFdHandler so that it can be used by upper layer
+   to hand over an externally connected fd to the grpc server. */
+grpc_core::TcpServerFdHandler* grpc_tcp_server_create_fd_handler(
+    grpc_tcp_server* s);
+
+/* Number of fds at the given port_index, or 0 if port_index is out of
+   bounds. */
+unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server* s, unsigned port_index);
+
+/* Returns the file descriptor of the Mth (fd_index) listening socket of the Nth
+   (port_index) call to add_port() on this server, or -1 if the indices are out
+   of bounds. The file descriptor remains owned by the server, and will be
+   cleaned up when the ref count reaches zero. */
+int grpc_tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+                            unsigned fd_index);
+
+/* Ref s and return s. */
+grpc_tcp_server* grpc_tcp_server_ref(grpc_tcp_server* s);
+
+/* shutdown_starting is called when ref count has reached zero and the server is
+   about to be destroyed. The server will be deleted after it returns. Calling
+   grpc_tcp_server_ref() from it has no effect. */
+void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                           grpc_closure* shutdown_starting);
+
+/* If the refcount drops to zero, enqueue calls on exec_ctx to
+   shutdown_listeners and delete s. */
+void grpc_tcp_server_unref(grpc_tcp_server* s);
+
+/* Shutdown the fds of listeners. */
+void grpc_tcp_server_shutdown_listeners(grpc_tcp_server* s);
+
+void grpc_tcp_server_global_init();
+
+void grpc_set_tcp_server_impl(grpc_tcp_server_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server_utils_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server_utils_posix.h
new file mode 100644
index 0000000..390d6d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_server_utils_posix.h	
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+
+/* one listening port */
+typedef struct grpc_tcp_listener {
+  int fd;
+  grpc_fd* emfd;
+  grpc_tcp_server* server;
+  grpc_resolved_address addr;
+  int port;
+  unsigned port_index;
+  unsigned fd_index;
+  grpc_closure read_closure;
+  grpc_closure destroyed_closure;
+  struct grpc_tcp_listener* next;
+  /* sibling is a linked list of all listeners for a given port. add_port and
+     clone_port place all new listeners in the same sibling list. A member of
+     the 'sibling' list is also a member of the 'next' list. The head of each
+     sibling list has is_sibling==0, and subsequent members of sibling lists
+     have is_sibling==1. is_sibling allows separate sibling lists to be
+     identified while iterating through 'next'. */
+  struct grpc_tcp_listener* sibling;
+  int is_sibling;
+} grpc_tcp_listener;
+
+/* the overall server */
+struct grpc_tcp_server {
+  gpr_refcount refs;
+  /* Called whenever accept() succeeds on a server port. */
+  grpc_tcp_server_cb on_accept_cb;
+  void* on_accept_cb_arg;
+
+  gpr_mu mu;
+
+  /* active port count: how many ports are actually still listening */
+  size_t active_ports;
+  /* destroyed port count: how many ports are completely destroyed */
+  size_t destroyed_ports;
+
+  /* is this server shutting down? */
+  bool shutdown;
+  /* have listeners been shutdown? */
+  bool shutdown_listeners;
+  /* use SO_REUSEPORT */
+  bool so_reuseport;
+  /* expand wildcard addresses to a list of all local addresses */
+  bool expand_wildcard_addrs;
+
+  /* linked list of server ports */
+  grpc_tcp_listener* head;
+  grpc_tcp_listener* tail;
+  unsigned nports;
+
+  /* List of closures passed to shutdown_starting_add(). */
+  grpc_closure_list shutdown_starting;
+
+  /* shutdown callback */
+  grpc_closure* shutdown_complete;
+
+  /* all pollsets interested in new connections */
+  grpc_pollset** pollsets;
+  /* number of pollsets in the pollsets array */
+  size_t pollset_count;
+
+  /* next pollset to assign a channel to */
+  gpr_atm next_pollset_to_assign;
+
+  /* channel args for this server */
+  grpc_channel_args* channel_args;
+
+  /* a handler for external connections, owned */
+  grpc_core::TcpServerFdHandler* fd_handler;
+};
+
+/* If successful, add a listener to \a s for \a addr, set \a dsmode for the
+   socket, and return the \a listener. */
+grpc_error* grpc_tcp_server_add_addr(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     unsigned port_index, unsigned fd_index,
+                                     grpc_dualstack_mode* dsmode,
+                                     grpc_tcp_listener** listener);
+
+/* Get all addresses assigned to network interfaces on the machine and create a
+   listener for each. requested_port is the port to use for every listener, or 0
+   to select one random port that will be used for every listener. Set *out_port
+   to the port selected. Return GRPC_ERROR_NONE only if all listeners were
+   added. */
+grpc_error* grpc_tcp_server_add_all_local_addrs(grpc_tcp_server* s,
+                                                unsigned port_index,
+                                                int requested_port,
+                                                int* out_port);
+
+/* Prepare a recently-created socket for listening. */
+grpc_error* grpc_tcp_server_prepare_socket(grpc_tcp_server*, int fd,
+                                           const grpc_resolved_address* addr,
+                                           bool so_reuseport, int* port);
+/* Ruturn true if the platform supports ifaddrs */
+bool grpc_tcp_server_have_ifaddrs(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_windows.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_windows.h
new file mode 100644
index 0000000..04ef810
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/tcp_windows.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+/* Create a tcp endpoint given a winsock handle.
+ * Takes ownership of the handle.
+ */
+grpc_endpoint* grpc_tcp_create(grpc_winsocket* socket,
+                               grpc_channel_args* channel_args,
+                               const char* peer_string);
+
+grpc_error* grpc_tcp_prepare_socket(SOCKET sock);
+
+grpc_error* grpc_tcp_set_non_block(SOCKET sock);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/time_averaged_stats.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/time_averaged_stats.h
new file mode 100644
index 0000000..8745f7f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/time_averaged_stats.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
+#define GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
+
+/* This tracks a time-decaying weighted average.  It works by collecting
+   batches of samples and then mixing their average into a time-decaying
+   weighted mean.  It is designed for batch operations where we do many adds
+   before updating the average. */
+
+typedef struct {
+  /* The initial average value.  This is the reported average until the first
+     grpc_time_averaged_stats_update_average call.  If a positive regress_weight
+     is used, we also regress towards this value on each update. */
+  double init_avg;
+  /* The sample weight of "init_avg" that is mixed in with each call to
+     grpc_time_averaged_stats_update_average.  If the calls to
+     grpc_time_averaged_stats_add_sample stop, this will cause the average to
+     regress back to the mean.  This should be non-negative.  Set it to 0 to
+     disable the bias.  A value of 1 has the effect of adding in 1 bonus sample
+     with value init_avg to each sample period. */
+  double regress_weight;
+  /* This determines the rate of decay of the time-averaging from one period
+     to the next by scaling the aggregate_total_weight of samples from prior
+     periods when combining with the latest period.  It should be in the range
+     [0,1].  A higher value adapts more slowly.  With a value of 0.5, if the
+     batches each have k samples, the samples_in_avg_ will grow to 2 k, so the
+     weighting of the time average will eventually be 1/3 new batch and 2/3
+     old average. */
+  double persistence_factor;
+
+  /* The total value of samples since the last UpdateAverage(). */
+  double batch_total_value;
+  /* The number of samples since the last UpdateAverage(). */
+  double batch_num_samples;
+  /* The time-decayed sum of batch_num_samples_ over previous batches.  This is
+     the "weight" of the old aggregate_weighted_avg_ when updating the
+     average. */
+  double aggregate_total_weight;
+  /* A time-decayed average of the (batch_total_value_ / batch_num_samples_),
+     computed by decaying the samples_in_avg_ weight in the weighted average. */
+  double aggregate_weighted_avg;
+} grpc_time_averaged_stats;
+
+/* See the comments on the members above for an explanation of init_avg,
+   regress_weight, and persistence_factor. */
+void grpc_time_averaged_stats_init(grpc_time_averaged_stats* stats,
+                                   double init_avg, double regress_weight,
+                                   double persistence_factor);
+/* Add a sample to the current batch. */
+void grpc_time_averaged_stats_add_sample(grpc_time_averaged_stats* stats,
+                                         double value);
+/* Complete a batch and compute the new estimate of the average sample
+   value. */
+double grpc_time_averaged_stats_update_average(grpc_time_averaged_stats* stats);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer.h
new file mode 100644
index 0000000..11da149
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
+
+typedef struct grpc_timer {
+  grpc_millis deadline;
+  // Uninitialized if not using heap, or INVALID_HEAP_INDEX if not in heap.
+  uint32_t heap_index;
+  bool pending;
+  struct grpc_timer* next;
+  struct grpc_timer* prev;
+  grpc_closure* closure;
+#ifndef NDEBUG
+  struct grpc_timer* hash_table_next;
+#endif
+
+  // Optional field used by custom timers
+  void* custom_timer;
+} grpc_timer;
+
+typedef enum {
+  GRPC_TIMERS_NOT_CHECKED,
+  GRPC_TIMERS_CHECKED_AND_EMPTY,
+  GRPC_TIMERS_FIRED,
+} grpc_timer_check_result;
+
+typedef struct grpc_timer_vtable {
+  void (*init)(grpc_timer* timer, grpc_millis, grpc_closure* closure);
+  void (*cancel)(grpc_timer* timer);
+
+  /* Internal API */
+  grpc_timer_check_result (*check)(grpc_millis* next);
+  void (*list_init)();
+  void (*list_shutdown)(void);
+  void (*consume_kick)(void);
+} grpc_timer_vtable;
+
+/* Initialize *timer. When expired or canceled, closure will be called with
+   error set to indicate if it expired (GRPC_ERROR_NONE) or was canceled
+   (GRPC_ERROR_CANCELLED). *closure is guaranteed to be called exactly once, and
+   application code should check the error to determine how it was invoked. The
+   application callback is also responsible for maintaining information about
+   when to free up any user-level state. Behavior is undefined for a deadline of
+   GRPC_MILLIS_INF_FUTURE. */
+void grpc_timer_init(grpc_timer* timer, grpc_millis deadline,
+                     grpc_closure* closure);
+
+/* Initialize *timer without setting it. This can later be passed through
+   the regular init or cancel */
+void grpc_timer_init_unset(grpc_timer* timer);
+
+/* Note that there is no timer destroy function. This is because the
+   timer is a one-time occurrence with a guarantee that the callback will
+   be called exactly once, either at expiration or cancellation. Thus, all
+   the internal timer event management state is destroyed just before
+   that callback is invoked. If the user has additional state associated with
+   the timer, the user is responsible for determining when it is safe to
+   destroy that state. */
+
+/* Cancel an *timer.
+   There are three cases:
+   1. We normally cancel the timer
+   2. The timer has already run
+   3. We can't cancel the timer because it is "in flight".
+
+   In all of these cases, the cancellation is still considered successful.
+   They are essentially distinguished in that the timer_cb will be run
+   exactly once from either the cancellation (with error GRPC_ERROR_CANCELLED)
+   or from the activation (with error GRPC_ERROR_NONE).
+
+   Note carefully that the callback function MAY occur in the same callstack
+   as grpc_timer_cancel. It's expected that most timers will be cancelled (their
+   primary use is to implement deadlines), and so this code is optimized such
+   that cancellation costs as little as possible. Making callbacks run inline
+   matches this aim.
+
+   Requires: cancel() must happen after init() on a given timer */
+void grpc_timer_cancel(grpc_timer* timer);
+
+/* iomgr internal api for dealing with timers */
+
+/* Check for timers to be run, and run them.
+   Return true if timer callbacks were executed.
+   If next is non-null, TRY to update *next with the next running timer
+   IF that timer occurs before *next current value.
+   *next is never guaranteed to be updated on any given execution; however,
+   with high probability at least one thread in the system will see an update
+   at any time slice. */
+grpc_timer_check_result grpc_timer_check(grpc_millis* next);
+void grpc_timer_list_init();
+void grpc_timer_list_shutdown();
+
+/* Consume a kick issued by grpc_kick_poller */
+void grpc_timer_consume_kick(void);
+
+/* the following must be implemented by each iomgr implementation */
+void grpc_kick_poller(void);
+
+/* Sets the timer implementation */
+void grpc_set_timer_impl(grpc_timer_vtable* vtable);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_custom.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_custom.h
new file mode 100644
index 0000000..bfea8ba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_custom.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct grpc_custom_timer {
+  // Implementation defined
+  void* timer;
+  uint64_t timeout_ms;
+
+  grpc_timer* original;
+} grpc_custom_timer;
+
+typedef struct grpc_custom_timer_vtable {
+  void (*start)(grpc_custom_timer* t);
+  void (*stop)(grpc_custom_timer* t);
+} grpc_custom_timer_vtable;
+
+void grpc_custom_timer_init(grpc_custom_timer_vtable* impl);
+
+void grpc_custom_timer_callback(grpc_custom_timer* t, grpc_error* error);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_heap.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_heap.h
new file mode 100644
index 0000000..7b983e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_heap.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct {
+  grpc_timer** timers;
+  uint32_t timer_count;
+  uint32_t timer_capacity;
+} grpc_timer_heap;
+
+/* return true if the new timer is the first timer in the heap */
+bool grpc_timer_heap_add(grpc_timer_heap* heap, grpc_timer* timer);
+
+void grpc_timer_heap_init(grpc_timer_heap* heap);
+void grpc_timer_heap_destroy(grpc_timer_heap* heap);
+
+void grpc_timer_heap_remove(grpc_timer_heap* heap, grpc_timer* timer);
+grpc_timer* grpc_timer_heap_top(grpc_timer_heap* heap);
+void grpc_timer_heap_pop(grpc_timer_heap* heap);
+
+bool grpc_timer_heap_is_empty(grpc_timer_heap* heap);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_manager.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_manager.h
new file mode 100644
index 0000000..d407cbb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/timer_manager.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+/* Timer Manager tries to keep only one thread waiting for the next timeout at
+   all times, and thus effectively preventing the thundering herd problem. */
+
+void grpc_timer_manager_init(void);
+void grpc_timer_manager_shutdown(void);
+
+/* enable/disable threading - must be called after grpc_timer_manager_init and
+ * before grpc_timer_manager_shutdown */
+void grpc_timer_manager_set_threading(bool enabled);
+/* explicitly perform one tick of the timer system - for when threading is
+ * disabled */
+void grpc_timer_manager_tick(void);
+/* get global counter that tracks timer wakeups */
+uint64_t grpc_timer_manager_get_wakeups_testonly(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/udp_server.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/udp_server.h
new file mode 100644
index 0000000..e92f3b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/udp_server.h	
@@ -0,0 +1,101 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Forward decl of struct grpc_server */
+/* This is not typedef'ed to avoid a typedef-redefinition error */
+struct grpc_server;
+
+/* Forward decl of grpc_udp_server */
+typedef struct grpc_udp_server grpc_udp_server;
+
+/* An interface associated with a socket. udp server delivers I/O event on that
+ * socket to the subclass of this interface which is created through
+ * GrpcUdpHandlerFactory.
+ * Its implementation should do the real IO work, e.g. read packet and write. */
+class GrpcUdpHandler {
+ public:
+  GrpcUdpHandler(grpc_fd* /* emfd */, void* /* user_data */) {}
+  virtual ~GrpcUdpHandler() {}
+
+  // Interfaces to be implemented by subclasses to do the actual setup/tear down
+  // or I/O.
+
+  // Called when data is available to read from the socket. Returns true if
+  // there is more data to read after this call.
+  virtual bool Read() = 0;
+  // Called when socket becomes write unblocked. The given closure should be
+  // scheduled when the socket becomes blocked next time.
+  virtual void OnCanWrite(void* user_data,
+                          grpc_closure* notify_on_write_closure) = 0;
+  // Called before the gRPC FD is orphaned. Notify udp server to continue
+  // orphaning fd by scheduling the given closure, afterwards the associated fd
+  // will be closed.
+  virtual void OnFdAboutToOrphan(grpc_closure* orphan_fd_closure,
+                                 void* user_data) = 0;
+};
+
+class GrpcUdpHandlerFactory {
+ public:
+  virtual ~GrpcUdpHandlerFactory() {}
+  /* Called when start to listen on a socket.
+   * Return an instance of the implementation of GrpcUdpHandler interface which
+   * will process I/O events for this socket from now on. */
+  virtual GrpcUdpHandler* CreateUdpHandler(grpc_fd* emfd, void* user_data) = 0;
+  virtual void DestroyUdpHandler(GrpcUdpHandler* handler) = 0;
+};
+
+/* Create a server, initially not bound to any ports */
+grpc_udp_server* grpc_udp_server_create(const grpc_channel_args* args);
+
+/* Start listening to bound ports. user_data is passed to callbacks. */
+void grpc_udp_server_start(grpc_udp_server* udp_server, grpc_pollset** pollsets,
+                           size_t pollset_count, void* user_data);
+
+int grpc_udp_server_get_fd(grpc_udp_server* s, unsigned port_index);
+
+/* Add a port to the server, returning port number on success, or negative
+   on failure.
+
+   Create |num_listeners| sockets for given address to listen on using
+   SO_REUSEPORT if supported.
+
+   The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
+   both IPv4 and IPv6 connections, but :: is the preferred style. This usually
+   creates |num_listeners| sockets, but possibly 2 * |num_listeners| on systems
+   which support IPv6, but not dualstack sockets. */
+
+/* TODO(ctiller): deprecate this, and make grpc_udp_server_add_ports to handle
+                  all of the multiple socket port matching logic in one place */
+int grpc_udp_server_add_port(grpc_udp_server* s,
+                             const grpc_resolved_address* addr,
+                             int rcv_buf_size, int snd_buf_size,
+                             GrpcUdpHandlerFactory* handler_factory,
+                             size_t num_listeners);
+
+void grpc_udp_server_destroy(grpc_udp_server* server, grpc_closure* on_done);
+
+#endif /* GRPC_CORE_LIB_IOMGR_UDP_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/unix_sockets_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/unix_sockets_posix.h
new file mode 100644
index 0000000..917d032
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/unix_sockets_posix.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+void grpc_create_socketpair_if_unix(int sv[2]);
+
+grpc_error* grpc_resolve_unix_domain_address(
+    const char* name, grpc_resolved_addresses** addresses);
+
+int grpc_is_unix_socket(const grpc_resolved_address* resolved_addr);
+
+void grpc_unlink_if_unix_domain_socket(
+    const grpc_resolved_address* resolved_addr);
+
+char* grpc_sockaddr_to_uri_unix_if_possible(
+    const grpc_resolved_address* resolved_addr);
+
+#endif /* GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_pipe.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_pipe.h
new file mode 100644
index 0000000..1756976
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_pipe.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+extern const grpc_wakeup_fd_vtable grpc_pipe_wakeup_fd_vtable;
+
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_posix.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_posix.h
new file mode 100644
index 0000000..670c319
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/wakeup_fd_posix.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * wakeup_fd abstracts the concept of a file descriptor for the purpose of
+ * waking up a thread in select()/poll()/epoll_wait()/etc.
+
+ * The poll() family of system calls provide a way for a thread to block until
+ * there is activity on one (or more) of a set of file descriptors. An
+ * application may wish to wake up this thread to do non file related work. The
+ * typical way to do this is to add a pipe to the set of file descriptors, then
+ * write to the pipe to wake up the thread in poll().
+ *
+ * Linux has a lighter weight eventfd specifically designed for this purpose.
+ * wakeup_fd abstracts the difference between the two.
+ *
+ * Setup:
+ * 1. Before calling anything, call global_init() at least once.
+ * 1. Call grpc_wakeup_fd_init() to set up a wakeup_fd.
+ * 2. Add the result of GRPC_WAKEUP_FD_FD to the set of monitored file
+ *    descriptors for the poll() style API you are using. Monitor the file
+ *    descriptor for readability.
+ * 3. To tear down, call grpc_wakeup_fd_destroy(). This closes the underlying
+ *    file descriptor.
+ *
+ * Usage:
+ * 1. To wake up a polling thread, call grpc_wakeup_fd_wakeup() on a wakeup_fd
+ *    it is monitoring.
+ * 2. If the polling thread was awakened by a wakeup_fd event, call
+ *    grpc_wakeup_fd_consume_wakeup() on it.
+ */
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+void grpc_wakeup_fd_global_init(void);
+void grpc_wakeup_fd_global_destroy(void);
+
+/* Force using the fallback implementation. This is intended for testing
+ * purposes only.*/
+void grpc_wakeup_fd_global_init_force_fallback(void);
+
+int grpc_has_wakeup_fd(void);
+int grpc_cv_wakeup_fds_enabled(void);
+void grpc_enable_cv_wakeup_fds(int enable);
+
+typedef struct grpc_wakeup_fd grpc_wakeup_fd;
+
+typedef struct grpc_wakeup_fd_vtable {
+  grpc_error* (*init)(grpc_wakeup_fd* fd_info);
+  grpc_error* (*consume)(grpc_wakeup_fd* fd_info);
+  grpc_error* (*wakeup)(grpc_wakeup_fd* fd_info);
+  void (*destroy)(grpc_wakeup_fd* fd_info);
+  /* Must be called before calling any other functions */
+  int (*check_availability)(void);
+} grpc_wakeup_fd_vtable;
+
+struct grpc_wakeup_fd {
+  int read_fd;
+  int write_fd;
+};
+
+extern int grpc_allow_specialized_wakeup_fd;
+extern int grpc_allow_pipe_wakeup_fd;
+
+#define GRPC_WAKEUP_FD_GET_READ_FD(fd_info) ((fd_info)->read_fd)
+
+grpc_error* grpc_wakeup_fd_init(grpc_wakeup_fd* fd_info) GRPC_MUST_USE_RESULT;
+grpc_error* grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd* fd_info)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_wakeup_fd_wakeup(grpc_wakeup_fd* fd_info) GRPC_MUST_USE_RESULT;
+void grpc_wakeup_fd_destroy(grpc_wakeup_fd* fd_info);
+
+/* Defined in some specialized implementation's .c file, or by
+ * wakeup_fd_nospecial.c if no such implementation exists. */
+extern const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable;
+
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/work_serializer.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/work_serializer.h
new file mode 100644
index 0000000..169562d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/iomgr/work_serializer.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <functional>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+#ifndef GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H
+#define GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H
+
+namespace grpc_core {
+
+// WorkSerializer is a mechanism to schedule callbacks in a synchronized manner.
+// All callbacks scheduled on a WorkSerializer instance will be executed
+// serially in a borrowed thread. The API provides a FIFO guarantee to the
+// execution of callbacks scheduled on the thread.
+// When a thread calls Run() with a callback, the thread is considered borrowed.
+// The callback might run inline, or it might run asynchronously in a different
+// thread that is already inside of Run(). If the callback runs directly inline,
+// other callbacks from other threads might also be executed before Run()
+// returns. Since an arbitrary set of callbacks might be executed when Run() is
+// called, generally no locks should be held while calling Run().
+class WorkSerializer {
+ public:
+  WorkSerializer();
+
+  ~WorkSerializer();
+
+  // TODO(yashkt): Replace grpc_core::DebugLocation with absl::SourceLocation
+  // once we can start using it directly.
+  void Run(std::function<void()> callback,
+           const grpc_core::DebugLocation& location);
+
+ private:
+  class WorkSerializerImpl;
+
+  OrphanablePtr<WorkSerializerImpl> impl_;
+};
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/json/json.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/json/json.h
new file mode 100644
index 0000000..a949ae5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/json/json.h	
@@ -0,0 +1,239 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_JSON_JSON_H
+#define GRPC_CORE_LIB_JSON_JSON_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/error.h"
+
+namespace grpc_core {
+
+// A JSON value, which can be any one of object, array, string,
+// number, true, false, or null.
+class Json {
+ public:
+  // TODO(roth): Currently, numbers are stored internally as strings,
+  // which makes the API a bit cumbersome to use. When we have time,
+  // consider whether there's a better alternative (e.g., maybe storing
+  // each numeric type as the native C++ type and automatically converting
+  // to string as needed).
+  enum class Type {
+    JSON_NULL,
+    JSON_TRUE,
+    JSON_FALSE,
+    NUMBER,
+    STRING,
+    OBJECT,
+    ARRAY
+  };
+
+  using Object = std::map<std::string, Json>;
+  using Array = std::vector<Json>;
+
+  // Parses JSON string from json_str.  On error, sets *error.
+  static Json Parse(StringView json_str, grpc_error** error);
+
+  Json() = default;
+
+  // Copyable.
+  Json(const Json& other) { CopyFrom(other); }
+  Json& operator=(const Json& other) {
+    CopyFrom(other);
+    return *this;
+  }
+
+  // Moveable.
+  Json(Json&& other) { MoveFrom(std::move(other)); }
+  Json& operator=(Json&& other) {
+    MoveFrom(std::move(other));
+    return *this;
+  }
+
+  // Construct from copying a string.
+  // If is_number is true, the type will be NUMBER instead of STRING.
+  Json(const std::string& string, bool is_number = false)
+      : type_(is_number ? Type::NUMBER : Type::STRING), string_value_(string) {}
+  Json& operator=(const std::string& string) {
+    type_ = Type::STRING;
+    string_value_ = string;
+    return *this;
+  }
+
+  // Same thing for C-style strings, both const and mutable.
+  Json(const char* string, bool is_number = false)
+      : Json(std::string(string), is_number) {}
+  Json& operator=(const char* string) {
+    *this = std::string(string);
+    return *this;
+  }
+  Json(char* string, bool is_number = false)
+      : Json(std::string(string), is_number) {}
+  Json& operator=(char* string) {
+    *this = std::string(string);
+    return *this;
+  }
+
+  // Construct by moving a string.
+  Json(std::string&& string)
+      : type_(Type::STRING), string_value_(std::move(string)) {}
+  Json& operator=(std::string&& string) {
+    type_ = Type::STRING;
+    string_value_ = std::move(string);
+    return *this;
+  }
+
+  // Construct from bool.
+  Json(bool b) : type_(b ? Type::JSON_TRUE : Type::JSON_FALSE) {}
+  Json& operator=(bool b) {
+    type_ = b ? Type::JSON_TRUE : Type::JSON_FALSE;
+    return *this;
+  }
+
+  // Construct from any numeric type.
+  template <typename NumericType>
+  Json(NumericType number)
+      : type_(Type::NUMBER), string_value_(std::to_string(number)) {}
+  template <typename NumericType>
+  Json& operator=(NumericType number) {
+    type_ = Type::NUMBER;
+    string_value_ = std::to_string(number);
+    return *this;
+  }
+
+  // Construct by copying object.
+  Json(const Object& object) : type_(Type::OBJECT), object_value_(object) {}
+  Json& operator=(const Object& object) {
+    type_ = Type::OBJECT;
+    object_value_ = object;
+    return *this;
+  }
+
+  // Construct by moving object.
+  Json(Object&& object)
+      : type_(Type::OBJECT), object_value_(std::move(object)) {}
+  Json& operator=(Object&& object) {
+    type_ = Type::OBJECT;
+    object_value_ = std::move(object);
+    return *this;
+  }
+
+  // Construct by copying array.
+  Json(const Array& array) : type_(Type::ARRAY), array_value_(array) {}
+  Json& operator=(const Array& array) {
+    type_ = Type::ARRAY;
+    array_value_ = array;
+    return *this;
+  }
+
+  // Construct by moving array.
+  Json(Array&& array) : type_(Type::ARRAY), array_value_(std::move(array)) {}
+  Json& operator=(Array&& array) {
+    type_ = Type::ARRAY;
+    array_value_ = std::move(array);
+    return *this;
+  }
+
+  // Dumps JSON from value to string form.
+  std::string Dump(int indent = 0) const;
+
+  // Accessor methods.
+  Type type() const { return type_; }
+  const std::string& string_value() const { return string_value_; }
+  std::string* mutable_string_value() { return &string_value_; }
+  const Object& object_value() const { return object_value_; }
+  Object* mutable_object() { return &object_value_; }
+  const Array& array_value() const { return array_value_; }
+  Array* mutable_array() { return &array_value_; }
+
+  bool operator==(const Json& other) const {
+    if (type_ != other.type_) return false;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        if (string_value_ != other.string_value_) return false;
+        break;
+      case Type::OBJECT:
+        if (object_value_ != other.object_value_) return false;
+        break;
+      case Type::ARRAY:
+        if (array_value_ != other.array_value_) return false;
+        break;
+      default:
+        break;
+    }
+    return true;
+  }
+
+  bool operator!=(const Json& other) const { return !(*this == other); }
+
+ private:
+  void CopyFrom(const Json& other) {
+    type_ = other.type_;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        string_value_ = other.string_value_;
+        break;
+      case Type::OBJECT:
+        object_value_ = other.object_value_;
+        break;
+      case Type::ARRAY:
+        array_value_ = other.array_value_;
+        break;
+      default:
+        break;
+    }
+  }
+
+  void MoveFrom(Json&& other) {
+    type_ = other.type_;
+    other.type_ = Type::JSON_NULL;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        string_value_ = std::move(other.string_value_);
+        break;
+      case Type::OBJECT:
+        object_value_ = std::move(other.object_value_);
+        break;
+      case Type::ARRAY:
+        array_value_ = std::move(other.array_value_);
+        break;
+      default:
+        break;
+    }
+  }
+
+  Type type_ = Type::JSON_NULL;
+  std::string string_value_;
+  Object object_value_;
+  Array array_value_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_JSON_JSON_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/profiling/timers.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/profiling/timers.h
new file mode 100644
index 0000000..7ff7278
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/profiling/timers.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_PROFILING_TIMERS_H
+#define GRPC_CORE_LIB_PROFILING_TIMERS_H
+
+void gpr_timers_global_init(void);
+void gpr_timers_global_destroy(void);
+
+void gpr_timer_add_mark(const char* tagstr, int important, const char* file,
+                        int line);
+void gpr_timer_begin(const char* tagstr, int important, const char* file,
+                     int line);
+void gpr_timer_end(const char* tagstr, int important, const char* file,
+                   int line);
+
+void gpr_timers_set_log_filename(const char* filename);
+
+void gpr_timer_set_enabled(int enabled);
+
+#if !(defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER) + \
+      defined(GRPC_CUSTOM_PROFILER))
+/* No profiling. No-op all the things. */
+#define GPR_TIMER_MARK(tag, important) \
+  do {                                 \
+  } while (0)
+
+#define GPR_TIMER_SCOPE(tag, important) \
+  do {                                  \
+  } while (0)
+
+#else /* at least one profiler requested... */
+/* ... hopefully only one. */
+#if defined(GRPC_STAP_PROFILER) && defined(GRPC_BASIC_PROFILER)
+#error "GRPC_STAP_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
+#endif
+#if defined(GRPC_STAP_PROFILER) && defined(GRPC_CUSTOM_PROFILER)
+#error "GRPC_STAP_PROFILER and GRPC_CUSTOM_PROFILER are mutually exclusive."
+#endif
+#if defined(GRPC_CUSTOM_PROFILER) && defined(GRPC_BASIC_PROFILER)
+#error "GRPC_CUSTOM_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
+#endif
+
+/* Generic profiling interface. */
+#define GPR_TIMER_MARK(tag, important) \
+  gpr_timer_add_mark(tag, important, __FILE__, __LINE__);
+
+#ifdef GRPC_STAP_PROFILER
+/* Empty placeholder for now. */
+#endif /* GRPC_STAP_PROFILER */
+
+#ifdef GRPC_BASIC_PROFILER
+/* Empty placeholder for now. */
+#endif /* GRPC_BASIC_PROFILER */
+
+namespace grpc {
+class ProfileScope {
+ public:
+  ProfileScope(const char* desc, bool important, const char* file, int line)
+      : desc_(desc) {
+    gpr_timer_begin(desc_, important ? 1 : 0, file, line);
+  }
+  ~ProfileScope() { gpr_timer_end(desc_, 0, "n/a", 0); }
+
+ private:
+  const char* const desc_;
+};
+}  // namespace grpc
+
+#define GPR_TIMER_SCOPE_NAME_INTERNAL(prefix, line) prefix##line
+#define GPR_TIMER_SCOPE_NAME(prefix, line) \
+  GPR_TIMER_SCOPE_NAME_INTERNAL(prefix, line)
+#define GPR_TIMER_SCOPE(tag, important)                                 \
+  ::grpc::ProfileScope GPR_TIMER_SCOPE_NAME(_profile_scope_, __LINE__)( \
+      (tag), (important), __FILE__, __LINE__)
+
+#endif /* at least one profiler requested. */
+
+#endif /* GRPC_CORE_LIB_PROFILING_TIMERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/context/security_context.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/context/security_context.h
new file mode 100644
index 0000000..b199108
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/context/security_context.h	
@@ -0,0 +1,150 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H
+#define GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_auth_context_refcount;
+
+/* --- grpc_auth_context ---
+
+   High level authentication context object. Can optionally be chained. */
+
+/* Property names are always NULL terminated. */
+
+struct grpc_auth_property_array {
+  grpc_auth_property* array = nullptr;
+  size_t count = 0;
+  size_t capacity = 0;
+};
+
+void grpc_auth_property_reset(grpc_auth_property* property);
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_auth_context
+    : public grpc_core::RefCounted<grpc_auth_context,
+                                   grpc_core::NonPolymorphicRefCount> {
+ public:
+  explicit grpc_auth_context(
+      grpc_core::RefCountedPtr<grpc_auth_context> chained)
+      : grpc_core::RefCounted<grpc_auth_context,
+                              grpc_core::NonPolymorphicRefCount>(
+            &grpc_trace_auth_context_refcount),
+        chained_(std::move(chained)) {
+    if (chained_ != nullptr) {
+      peer_identity_property_name_ = chained_->peer_identity_property_name_;
+    }
+  }
+
+  ~grpc_auth_context() {
+    chained_.reset(DEBUG_LOCATION, "chained");
+    if (properties_.array != nullptr) {
+      for (size_t i = 0; i < properties_.count; i++) {
+        grpc_auth_property_reset(&properties_.array[i]);
+      }
+      gpr_free(properties_.array);
+    }
+  }
+
+  const grpc_auth_context* chained() const { return chained_.get(); }
+  const grpc_auth_property_array& properties() const { return properties_; }
+
+  bool is_authenticated() const {
+    return peer_identity_property_name_ != nullptr;
+  }
+  const char* peer_identity_property_name() const {
+    return peer_identity_property_name_;
+  }
+  void set_peer_identity_property_name(const char* name) {
+    peer_identity_property_name_ = name;
+  }
+
+  void ensure_capacity();
+  void add_property(const char* name, const char* value, size_t value_length);
+  void add_cstring_property(const char* name, const char* value);
+
+ private:
+  grpc_core::RefCountedPtr<grpc_auth_context> chained_;
+  grpc_auth_property_array properties_;
+  const char* peer_identity_property_name_ = nullptr;
+};
+
+/* --- grpc_security_context_extension ---
+
+   Extension to the security context that may be set in a filter and accessed
+   later by a higher level method on a grpc_call object. */
+
+struct grpc_security_context_extension {
+  void* instance = nullptr;
+  void (*destroy)(void*) = nullptr;
+};
+
+/* --- grpc_client_security_context ---
+
+   Internal client-side security context. */
+
+struct grpc_client_security_context {
+  explicit grpc_client_security_context(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds)
+      : creds(std::move(creds)) {}
+  ~grpc_client_security_context();
+
+  grpc_core::RefCountedPtr<grpc_call_credentials> creds;
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+  grpc_security_context_extension extension;
+};
+
+grpc_client_security_context* grpc_client_security_context_create(
+    grpc_core::Arena* arena, grpc_call_credentials* creds);
+void grpc_client_security_context_destroy(void* ctx);
+
+/* --- grpc_server_security_context ---
+
+   Internal server-side security context. */
+
+struct grpc_server_security_context {
+  grpc_server_security_context() = default;
+  ~grpc_server_security_context();
+
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+  grpc_security_context_extension extension;
+};
+
+grpc_server_security_context* grpc_server_security_context_create(
+    grpc_core::Arena* arena);
+void grpc_server_security_context_destroy(void* ctx);
+
+/* --- Channel args for auth context --- */
+#define GRPC_AUTH_CONTEXT_ARG "grpc.auth_context"
+
+grpc_arg grpc_auth_context_to_arg(grpc_auth_context* c);
+grpc_auth_context* grpc_auth_context_from_arg(const grpc_arg* arg);
+grpc_auth_context* grpc_find_auth_context_in_args(
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/alts_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/alts_credentials.h
new file mode 100644
index 0000000..cc6d522
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/alts_credentials.h	
@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* Main struct for grpc ALTS channel credential. */
+class grpc_alts_credentials final : public grpc_channel_credentials {
+ public:
+  grpc_alts_credentials(const grpc_alts_credentials_options* options,
+                        const char* handshaker_service_url);
+  ~grpc_alts_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  const grpc_alts_credentials_options* options() const { return options_; }
+  grpc_alts_credentials_options* mutable_options() { return options_; }
+  const char* handshaker_service_url() const { return handshaker_service_url_; }
+
+ private:
+  grpc_alts_credentials_options* options_;
+  char* handshaker_service_url_;
+};
+
+/* Main struct for grpc ALTS server credential. */
+class grpc_alts_server_credentials final : public grpc_server_credentials {
+ public:
+  grpc_alts_server_credentials(const grpc_alts_credentials_options* options,
+                               const char* handshaker_service_url);
+  ~grpc_alts_server_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  const grpc_alts_credentials_options* options() const { return options_; }
+  grpc_alts_credentials_options* mutable_options() { return options_; }
+  const char* handshaker_service_url() const { return handshaker_service_url_; }
+
+ private:
+  grpc_alts_credentials_options* options_;
+  char* handshaker_service_url_;
+};
+
+/**
+ * This method creates an ALTS channel credential object with customized
+ * information provided by caller.
+ *
+ * - options: grpc ALTS credentials options instance for client.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port". If it's nullptr, the address of default metadata server will
+ *   be used.
+ * - enable_untrusted_alts: a boolean flag used to enable ALTS in untrusted
+ *   mode. This mode can be enabled when we are sure ALTS is running on GCP or
+ * for testing purpose.
+ *
+ * It returns nullptr if the flag is disabled AND ALTS is not running on GCP.
+ * Otherwise, it returns the created credential object.
+ */
+
+grpc_channel_credentials* grpc_alts_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts);
+
+/**
+ * This method creates an ALTS server credential object with customized
+ * information provided by caller.
+ *
+ * - options: grpc ALTS credentials options instance for server.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port". If it's nullptr, the address of default metadata server will
+ *   be used.
+ * - enable_untrusted_alts: a boolean flag used to enable ALTS in untrusted
+ *   mode. This mode can be enabled when we are sure ALTS is running on GCP or
+ * for testing purpose.
+ *
+ * It returns nullptr if the flag is disabled and ALTS is not running on GCP.
+ * Otherwise, it returns the created credential object.
+ */
+grpc_server_credentials* grpc_alts_server_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/check_gcp_environment.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/check_gcp_environment.h
new file mode 100644
index 0000000..aea4cea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/check_gcp_environment.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * This method is a helper function that reads a file containing system bios
+ * data. Exposed for testing only.
+ *
+ * - bios_file: a file containing BIOS data used to determine GCE tenancy
+ *   information.
+ *
+ * It returns a buffer containing the data read from the file.
+ */
+char* read_bios_file(const char* bios_file);
+
+/**
+ * This method checks if system BIOS data contains Google-specific phrases.
+ * Exposed for testing only.
+ *
+ * - bios_data: a buffer containing system BIOS data.
+ *
+ * It returns true if the BIOS data contains Google-specific phrases, and false
+ * otherwise.
+ */
+bool check_bios_data(const char* bios_data);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+/**
+ * This method checks if a VM (Windows or Linux) is running within Google
+ * compute Engine (GCE) or not. It returns true if the VM is running in GCE and
+ * false otherwise.
+ */
+bool grpc_alts_is_running_on_gcp();
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h
new file mode 100644
index 0000000..320af71
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/tsi/alts/handshaker/transport_security_common_api.h"
+
+/* V-table for grpc_alts_credentials_options */
+typedef struct grpc_alts_credentials_options_vtable {
+  grpc_alts_credentials_options* (*copy)(
+      const grpc_alts_credentials_options* options);
+  void (*destruct)(grpc_alts_credentials_options* options);
+} grpc_alts_credentials_options_vtable;
+
+struct grpc_alts_credentials_options {
+  const struct grpc_alts_credentials_options_vtable* vtable;
+  grpc_gcp_rpc_protocol_versions rpc_versions;
+};
+
+typedef struct target_service_account {
+  struct target_service_account* next;
+  char* data;
+} target_service_account;
+
+/**
+ * Main struct for ALTS client credentials options. The options contain a
+ * a list of target service accounts (if specified) used for secure naming
+ * check.
+ */
+typedef struct grpc_alts_credentials_client_options {
+  grpc_alts_credentials_options base;
+  target_service_account* target_account_list_head;
+} grpc_alts_credentials_client_options;
+
+/**
+ * Main struct for ALTS server credentials options. The options currently
+ * do not contain any server-specific fields.
+ */
+typedef struct grpc_alts_credentials_server_options {
+  grpc_alts_credentials_options base;
+} grpc_alts_credentials_server_options;
+
+/**
+ * This method performs a deep copy on grpc_alts_credentials_options instance.
+ *
+ * - options: a grpc_alts_credentials_options instance that needs to be copied.
+ *
+ * It returns a new grpc_alts_credentials_options instance on success and NULL
+ * on failure.
+ */
+grpc_alts_credentials_options* grpc_alts_credentials_options_copy(
+    const grpc_alts_credentials_options* options);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/composite/composite_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/composite/composite_credentials.h
new file mode 100644
index 0000000..74d55bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/composite/composite_credentials.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* -- Composite channel credentials. -- */
+
+class grpc_composite_channel_credentials : public grpc_channel_credentials {
+ public:
+  grpc_composite_channel_credentials(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds)
+      : grpc_channel_credentials(channel_creds->type()),
+        inner_creds_(std::move(channel_creds)),
+        call_creds_(std::move(call_creds)) {}
+
+  ~grpc_composite_channel_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_credentials>
+  duplicate_without_call_credentials() override {
+    return inner_creds_;
+  }
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_channel_args* update_arguments(grpc_channel_args* args) override {
+    return inner_creds_->update_arguments(args);
+  }
+
+  const grpc_channel_credentials* inner_creds() const {
+    return inner_creds_.get();
+  }
+  const grpc_call_credentials* call_creds() const { return call_creds_.get(); }
+  grpc_call_credentials* mutable_call_creds() { return call_creds_.get(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> inner_creds_;
+  grpc_core::RefCountedPtr<grpc_call_credentials> call_creds_;
+};
+
+/* -- Composite call credentials. -- */
+
+class grpc_composite_call_credentials : public grpc_call_credentials {
+ public:
+  using CallCredentialsList =
+      grpc_core::InlinedVector<grpc_core::RefCountedPtr<grpc_call_credentials>,
+                               2>;
+
+  grpc_composite_call_credentials(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds1,
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds2);
+  ~grpc_composite_call_credentials() override = default;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  grpc_security_level min_security_level() const override {
+    return min_security_level_;
+  }
+
+  const CallCredentialsList& inner() const { return inner_; }
+
+ private:
+  void push_to_inner(grpc_core::RefCountedPtr<grpc_call_credentials> creds,
+                     bool is_composite);
+  grpc_security_level min_security_level_;
+  CallCredentialsList inner_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/credentials.h
new file mode 100644
index 0000000..65996fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/credentials.h	
@@ -0,0 +1,334 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/transport/metadata_batch.h"
+
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+struct grpc_http_response;
+
+/* --- Constants. --- */
+
+typedef enum {
+  GRPC_CREDENTIALS_OK = 0,
+  GRPC_CREDENTIALS_ERROR
+} grpc_credentials_status;
+
+#define GRPC_FAKE_TRANSPORT_SECURITY_TYPE "fake"
+
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_SSL "Ssl"
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY \
+  "FakeTransportSecurity"
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_GOOGLE_DEFAULT "GoogleDefault"
+
+#define GRPC_CALL_CREDENTIALS_TYPE_OAUTH2 "Oauth2"
+#define GRPC_CALL_CREDENTIALS_TYPE_JWT "Jwt"
+#define GRPC_CALL_CREDENTIALS_TYPE_IAM "Iam"
+#define GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE "Composite"
+
+#define GRPC_AUTHORIZATION_METADATA_KEY "authorization"
+#define GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY \
+  "x-goog-iam-authorization-token"
+#define GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY "x-goog-iam-authority-selector"
+
+#define GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS 60
+
+#define GRPC_COMPUTE_ENGINE_METADATA_HOST "metadata.google.internal."
+#define GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH \
+  "/computeMetadata/v1/instance/service-accounts/default/token"
+
+#define GRPC_GOOGLE_OAUTH2_SERVICE_HOST "oauth2.googleapis.com"
+#define GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH "/token"
+
+#define GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX                         \
+  "grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&" \
+  "assertion="
+
+#define GRPC_REFRESH_TOKEN_POST_BODY_FORMAT_STRING \
+  "client_id=%s&client_secret=%s&refresh_token=%s&grant_type=refresh_token"
+
+/* --- Google utils --- */
+
+/* It is the caller's responsibility to gpr_free the result if not NULL. */
+char* grpc_get_well_known_google_credentials_file_path(void);
+
+/* Implementation function for the different platforms. */
+char* grpc_get_well_known_google_credentials_file_path_impl(void);
+
+/* Override for testing only. Not thread-safe */
+typedef char* (*grpc_well_known_credentials_path_getter)(void);
+void grpc_override_well_known_credentials_path_getter(
+    grpc_well_known_credentials_path_getter getter);
+
+/* --- grpc_channel_credentials. --- */
+
+#define GRPC_ARG_CHANNEL_CREDENTIALS "grpc.channel_credentials"
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_channel_credentials
+    : grpc_core::RefCounted<grpc_channel_credentials> {
+ public:
+  explicit grpc_channel_credentials(const char* type) : type_(type) {}
+  virtual ~grpc_channel_credentials() = default;
+
+  // Creates a security connector for the channel. May also create new channel
+  // args for the channel to be used in place of the passed in const args if
+  // returned non NULL. In that case the caller is responsible for destroying
+  // new_args after channel creation.
+  virtual grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) = 0;
+
+  // Creates a version of the channel credentials without any attached call
+  // credentials. This can be used in order to open a channel to a non-trusted
+  // gRPC load balancer.
+  virtual grpc_core::RefCountedPtr<grpc_channel_credentials>
+  duplicate_without_call_credentials() {
+    // By default we just increment the refcount.
+    return Ref();
+  }
+
+  // Allows credentials to optionally modify a parent channel's args.
+  // By default, leave channel args as is. The callee takes ownership
+  // of the passed-in channel args, and the caller takes ownership
+  // of the returned channel args.
+  virtual grpc_channel_args* update_arguments(grpc_channel_args* args) {
+    return args;
+  }
+
+  // Attaches control_plane_creds to the local registry, under authority,
+  // if no other creds are currently registered under authority. Returns
+  // true if registered successfully and false if not.
+  bool attach_credentials(
+      const char* authority,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> control_plane_creds);
+
+  // Gets the control plane credentials registered under authority. This
+  // prefers the local control plane creds registry but falls back to the
+  // global registry. Lastly, this returns self but with any attached
+  // call credentials stripped off, in the case that neither the local
+  // registry nor the global registry have an entry for authority.
+  grpc_core::RefCountedPtr<grpc_channel_credentials>
+  get_control_plane_credentials(const char* authority);
+
+  const char* type() const { return type_; }
+
+ private:
+  const char* type_;
+  std::map<grpc_core::UniquePtr<char>,
+           grpc_core::RefCountedPtr<grpc_channel_credentials>,
+           grpc_core::StringLess>
+      local_control_plane_creds_;
+};
+
+/* Util to encapsulate the channel credentials in a channel arg. */
+grpc_arg grpc_channel_credentials_to_arg(grpc_channel_credentials* credentials);
+
+/* Util to get the channel credentials from a channel arg. */
+grpc_channel_credentials* grpc_channel_credentials_from_arg(
+    const grpc_arg* arg);
+
+/* Util to find the channel credentials from channel args. */
+grpc_channel_credentials* grpc_channel_credentials_find_in_args(
+    const grpc_channel_args* args);
+
+/** EXPERIMENTAL.  API MAY CHANGE IN THE FUTURE.
+    Attaches \a control_plane_creds to \a credentials
+    under the key \a authority. Returns false if \a authority
+    is already present, in which case no changes are made.
+    Note that this API is not thread safe. Only one thread may
+    attach control plane creds to a given credentials object at
+    any one time, and new control plane creds must not be
+    attached after \a credentials has been used to create a channel. */
+bool grpc_channel_credentials_attach_credentials(
+    grpc_channel_credentials* credentials, const char* authority,
+    grpc_channel_credentials* control_plane_creds);
+
+/** EXPERIMENTAL.  API MAY CHANGE IN THE FUTURE.
+    Registers \a control_plane_creds in the global registry
+    under the key \a authority. Returns false if \a authority
+    is already present, in which case no changes are made. */
+bool grpc_control_plane_credentials_register(
+    const char* authority, grpc_channel_credentials* control_plane_creds);
+
+/* Initializes global control plane credentials data. */
+void grpc_control_plane_credentials_init();
+
+/* Test only: destroy global control plane credentials data.
+ * This API is meant for use by a few tests that need to
+ * satisdy grpc_core::LeakDetector. */
+void grpc_test_only_control_plane_credentials_destroy();
+
+/* Test only: force re-initialization of global control
+ * plane credentials data if it was previously destroyed.
+ * This API is meant to be used in
+ * tandem with the
+ * grpc_test_only_control_plane_credentials_destroy, for
+ * the few tests that need it. */
+void grpc_test_only_control_plane_credentials_force_init();
+
+/* --- grpc_credentials_mdelem_array. --- */
+
+typedef struct {
+  grpc_mdelem* md = nullptr;
+  size_t size = 0;
+} grpc_credentials_mdelem_array;
+
+/// Takes a new ref to \a md.
+void grpc_credentials_mdelem_array_add(grpc_credentials_mdelem_array* list,
+                                       grpc_mdelem md);
+
+/// Appends all elements from \a src to \a dst, taking a new ref to each one.
+void grpc_credentials_mdelem_array_append(grpc_credentials_mdelem_array* dst,
+                                          grpc_credentials_mdelem_array* src);
+
+void grpc_credentials_mdelem_array_destroy(grpc_credentials_mdelem_array* list);
+
+/* --- grpc_call_credentials. --- */
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_call_credentials
+    : public grpc_core::RefCounted<grpc_call_credentials> {
+ public:
+  explicit grpc_call_credentials(
+      const char* type,
+      grpc_security_level min_security_level = GRPC_PRIVACY_AND_INTEGRITY)
+      : type_(type), min_security_level_(min_security_level) {}
+
+  virtual ~grpc_call_credentials() = default;
+
+  // Returns true if completed synchronously, in which case \a error will
+  // be set to indicate the result.  Otherwise, \a on_request_metadata will
+  // be invoked asynchronously when complete.  \a md_array will be populated
+  // with the resulting metadata once complete.
+  virtual bool get_request_metadata(grpc_polling_entity* pollent,
+                                    grpc_auth_metadata_context context,
+                                    grpc_credentials_mdelem_array* md_array,
+                                    grpc_closure* on_request_metadata,
+                                    grpc_error** error) = 0;
+
+  // Cancels a pending asynchronous operation started by
+  // grpc_call_credentials_get_request_metadata() with the corresponding
+  // value of \a md_array.
+  virtual void cancel_get_request_metadata(
+      grpc_credentials_mdelem_array* md_array, grpc_error* error) = 0;
+
+  virtual grpc_security_level min_security_level() const {
+    return min_security_level_;
+  }
+
+  const char* type() const { return type_; }
+
+ private:
+  const char* type_;
+  const grpc_security_level min_security_level_;
+};
+
+/* Metadata-only credentials with the specified key and value where
+   asynchronicity can be simulated for testing. */
+grpc_call_credentials* grpc_md_only_test_credentials_create(
+    const char* md_key, const char* md_value, bool is_async);
+
+/* --- grpc_server_credentials. --- */
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_server_credentials
+    : public grpc_core::RefCounted<grpc_server_credentials> {
+ public:
+  explicit grpc_server_credentials(const char* type) : type_(type) {}
+
+  virtual ~grpc_server_credentials() { DestroyProcessor(); }
+
+  virtual grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() = 0;
+
+  const char* type() const { return type_; }
+
+  const grpc_auth_metadata_processor& auth_metadata_processor() const {
+    return processor_;
+  }
+  void set_auth_metadata_processor(
+      const grpc_auth_metadata_processor& processor);
+
+ private:
+  void DestroyProcessor() {
+    if (processor_.destroy != nullptr && processor_.state != nullptr) {
+      processor_.destroy(processor_.state);
+    }
+  }
+
+  const char* type_;
+  grpc_auth_metadata_processor processor_ =
+      grpc_auth_metadata_processor();  // Zero-initialize the C struct.
+};
+
+#define GRPC_SERVER_CREDENTIALS_ARG "grpc.server_credentials"
+
+grpc_arg grpc_server_credentials_to_arg(grpc_server_credentials* c);
+grpc_server_credentials* grpc_server_credentials_from_arg(const grpc_arg* arg);
+grpc_server_credentials* grpc_find_server_credentials_in_args(
+    const grpc_channel_args* args);
+
+/* -- Credentials Metadata Request. -- */
+
+struct grpc_credentials_metadata_request {
+  explicit grpc_credentials_metadata_request(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds)
+      : creds(std::move(creds)) {}
+  ~grpc_credentials_metadata_request() {
+    grpc_http_response_destroy(&response);
+  }
+
+  grpc_core::RefCountedPtr<grpc_call_credentials> creds;
+  grpc_http_response response;
+};
+
+inline grpc_credentials_metadata_request*
+grpc_credentials_metadata_request_create(
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds) {
+  return new grpc_credentials_metadata_request(std::move(creds));
+}
+
+inline void grpc_credentials_metadata_request_destroy(
+    grpc_credentials_metadata_request* r) {
+  delete r;
+}
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/fake/fake_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/fake/fake_credentials.h
new file mode 100644
index 0000000..411cfa9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/fake/fake_credentials.h	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#define GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS \
+  "grpc.fake_security.expected_targets"
+
+/* -- Fake transport security credentials. -- */
+
+/* Creates a fake transport security credentials object for testing. */
+grpc_channel_credentials* grpc_fake_transport_security_credentials_create(void);
+
+/* Creates a fake server transport security credentials object for testing. */
+grpc_server_credentials* grpc_fake_transport_security_server_credentials_create(
+    void);
+
+/* Used to verify the target names given to the fake transport security
+ * connector.
+ *
+ * The syntax of \a expected_targets by example:
+ * For LB channels:
+ *     "backend_target_1,backend_target_2,...;lb_target_1,lb_target_2,..."
+ * For regular channels:
+ *     "backend_taget_1,backend_target_2,..."
+ *
+ * That is to say, LB channels have a heading list of LB targets separated from
+ * the list of backend targets by a semicolon. For non-LB channels, only the
+ * latter is present. */
+grpc_arg grpc_fake_transport_expected_targets_arg(char* expected_targets);
+
+/* Return the value associated with the expected targets channel arg or NULL */
+const char* grpc_fake_transport_get_expected_targets(
+    const grpc_channel_args* args);
+
+/* --  Metadata-only Test credentials. -- */
+
+class grpc_md_only_test_credentials : public grpc_call_credentials {
+ public:
+  grpc_md_only_test_credentials(const char* md_key, const char* md_value,
+                                bool is_async)
+      : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_OAUTH2,
+                              GRPC_SECURITY_NONE),
+        md_(grpc_mdelem_from_slices(grpc_slice_from_copied_string(md_key),
+                                    grpc_slice_from_copied_string(md_value))),
+        is_async_(is_async) {}
+  ~grpc_md_only_test_credentials() override { GRPC_MDELEM_UNREF(md_); }
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_mdelem md_;
+  bool is_async_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/google_default/google_default_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/google_default/google_default_credentials.h
new file mode 100644
index 0000000..8a945da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/google_default/google_default_credentials.h	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+#define GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY "gcloud"
+#define GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE \
+  "application_default_credentials.json"
+
+#ifdef GPR_WINDOWS
+#define GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR "APPDATA"
+#define GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX \
+  GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY    \
+  "/" GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE
+#else
+#define GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR "HOME"
+#define GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX         \
+  ".config/" GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY \
+  "/" GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE
+#endif
+
+class grpc_google_default_channel_credentials
+    : public grpc_channel_credentials {
+ public:
+  grpc_google_default_channel_credentials(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> alts_creds,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> ssl_creds)
+      : grpc_channel_credentials(GRPC_CHANNEL_CREDENTIALS_TYPE_GOOGLE_DEFAULT),
+        alts_creds_(std::move(alts_creds)),
+        ssl_creds_(std::move(ssl_creds)) {}
+
+  ~grpc_google_default_channel_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_channel_args* update_arguments(grpc_channel_args* args) override;
+
+  const grpc_channel_credentials* alts_creds() const {
+    return alts_creds_.get();
+  }
+  const grpc_channel_credentials* ssl_creds() const { return ssl_creds_.get(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> alts_creds_;
+  grpc_core::RefCountedPtr<grpc_channel_credentials> ssl_creds_;
+};
+
+namespace grpc_core {
+namespace internal {
+
+typedef bool (*grpc_gce_tenancy_checker)(void);
+
+void set_gce_tenancy_checker_for_testing(grpc_gce_tenancy_checker checker);
+
+// TEST-ONLY. Reset the internal global state.
+void grpc_flush_cached_google_default_credentials(void);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/iam/iam_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/iam/iam_credentials.h
new file mode 100644
index 0000000..36f5ee8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/iam/iam_credentials.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+class grpc_google_iam_credentials : public grpc_call_credentials {
+ public:
+  grpc_google_iam_credentials(const char* token,
+                              const char* authority_selector);
+  ~grpc_google_iam_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_credentials_mdelem_array md_array_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/json_token.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/json_token.h
new file mode 100644
index 0000000..10143d3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/json_token.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+#if COCOAPODS==1
+  #include <openssl_grpc/rsa.h>
+#else
+  #include <openssl/rsa.h>
+#endif
+
+#include "src/core/lib/json/json.h"
+
+/* --- Constants. --- */
+
+#define GRPC_JWT_OAUTH2_AUDIENCE "https://oauth2.googleapis.com/token"
+
+/* --- auth_json_key parsing. --- */
+
+typedef struct {
+  const char* type;
+  char* private_key_id;
+  char* client_id;
+  char* client_email;
+  RSA* private_key;
+} grpc_auth_json_key;
+
+/* Returns 1 if the object is valid, 0 otherwise. */
+int grpc_auth_json_key_is_valid(const grpc_auth_json_key* json_key);
+
+/* Creates a json_key object from string. Returns an invalid object if a parsing
+   error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_string(
+    const char* json_string);
+
+/* Creates a json_key object from parsed json. Returns an invalid object if a
+   parsing error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_json(
+    const grpc_core::Json& json);
+
+/* Destructs the object. */
+void grpc_auth_json_key_destruct(grpc_auth_json_key* json_key);
+
+/* --- json token encoding and signing. --- */
+
+/* Caller is responsible for calling gpr_free on the returned value. May return
+   NULL on invalid input. The scope parameter may be NULL. */
+char* grpc_jwt_encode_and_sign(const grpc_auth_json_key* json_key,
+                               const char* audience,
+                               gpr_timespec token_lifetime, const char* scope);
+
+/* Override encode_and_sign function for testing. */
+typedef char* (*grpc_jwt_encode_and_sign_override)(
+    const grpc_auth_json_key* json_key, const char* audience,
+    gpr_timespec token_lifetime, const char* scope);
+
+/* Set a custom encode_and_sign override for testing. */
+void grpc_jwt_encode_and_sign_set_override(
+    grpc_jwt_encode_and_sign_override func);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_credentials.h
new file mode 100644
index 0000000..5af909f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_credentials.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/jwt/json_token.h"
+
+class grpc_service_account_jwt_access_credentials
+    : public grpc_call_credentials {
+ public:
+  grpc_service_account_jwt_access_credentials(grpc_auth_json_key key,
+                                              gpr_timespec token_lifetime);
+  ~grpc_service_account_jwt_access_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  const gpr_timespec& jwt_lifetime() const { return jwt_lifetime_; }
+  const grpc_auth_json_key& key() const { return key_; }
+
+ private:
+  void reset_cache();
+
+  // Have a simple cache for now with just 1 entry. We could have a map based on
+  // the service_url for a more sophisticated one.
+  gpr_mu cache_mu_;
+  struct {
+    grpc_mdelem jwt_md = GRPC_MDNULL;
+    char* service_url = nullptr;
+    gpr_timespec jwt_expiration;
+  } cached_;
+
+  grpc_auth_json_key key_;
+  gpr_timespec jwt_lifetime_;
+};
+
+// Private constructor for jwt credentials from an already parsed json key.
+// Takes ownership of the key.
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+    grpc_auth_json_key key, gpr_timespec token_lifetime);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_verifier.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_verifier.h
new file mode 100644
index 0000000..d448386
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/jwt/jwt_verifier.h	
@@ -0,0 +1,123 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/json/json.h"
+
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+
+/* --- Constants. --- */
+
+#define GRPC_OPENID_CONFIG_URL_SUFFIX "/.well-known/openid-configuration"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN "gserviceaccount.com"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX \
+  "www.googleapis.com/robot/v1/metadata/x509"
+
+/* --- grpc_jwt_verifier_status. --- */
+
+typedef enum {
+  GRPC_JWT_VERIFIER_OK = 0,
+  GRPC_JWT_VERIFIER_BAD_SIGNATURE,
+  GRPC_JWT_VERIFIER_BAD_FORMAT,
+  GRPC_JWT_VERIFIER_BAD_AUDIENCE,
+  GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
+  GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE,
+  GRPC_JWT_VERIFIER_BAD_SUBJECT,
+  GRPC_JWT_VERIFIER_GENERIC_ERROR
+} grpc_jwt_verifier_status;
+
+const char* grpc_jwt_verifier_status_to_string(grpc_jwt_verifier_status status);
+
+/* --- grpc_jwt_claims. --- */
+
+typedef struct grpc_jwt_claims grpc_jwt_claims;
+
+void grpc_jwt_claims_destroy(grpc_jwt_claims* claims);
+
+/* Returns the whole JSON tree of the claims. */
+const grpc_core::Json* grpc_jwt_claims_json(const grpc_jwt_claims* claims);
+
+/* Access to registered claims in https://tools.ietf.org/html/rfc7519#page-9 */
+const char* grpc_jwt_claims_subject(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_issuer(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_id(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_audience(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims* claims);
+
+/* --- grpc_jwt_verifier. --- */
+
+typedef struct grpc_jwt_verifier grpc_jwt_verifier;
+
+typedef struct {
+  /* The email domain is the part after the @ sign. */
+  const char* email_domain;
+
+  /* The key url prefix will be used to get the public key from the issuer:
+     https://<key_url_prefix>/<issuer_email>
+     Therefore the key_url_prefix must NOT contain https://. */
+  const char* key_url_prefix;
+} grpc_jwt_verifier_email_domain_key_url_mapping;
+
+/* Globals to control the verifier. Not thread-safe. */
+extern gpr_timespec grpc_jwt_verifier_clock_skew;
+extern grpc_millis grpc_jwt_verifier_max_delay;
+
+/* The verifier can be created with some custom mappings to help with key
+   discovery in the case where the issuer is an email address.
+   mappings can be NULL in which case num_mappings MUST be 0.
+   A verifier object has one built-in mapping (unless overridden):
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN ->
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX.*/
+grpc_jwt_verifier* grpc_jwt_verifier_create(
+    const grpc_jwt_verifier_email_domain_key_url_mapping* mappings,
+    size_t num_mappings);
+
+/*The verifier must not be destroyed if there are still outstanding callbacks.*/
+void grpc_jwt_verifier_destroy(grpc_jwt_verifier* verifier);
+
+/* User provided callback that will be called when the verification of the JWT
+   is done (maybe in another thread).
+   It is the responsibility of the callee to call grpc_jwt_claims_destroy on
+   the claims. */
+typedef void (*grpc_jwt_verification_done_cb)(void* user_data,
+                                              grpc_jwt_verifier_status status,
+                                              grpc_jwt_claims* claims);
+
+/* Verifies for the JWT for the given expected audience. */
+void grpc_jwt_verifier_verify(grpc_jwt_verifier* verifier,
+                              grpc_pollset* pollset, const char* jwt,
+                              const char* audience,
+                              grpc_jwt_verification_done_cb cb,
+                              void* user_data);
+
+/* --- TESTING ONLY exposed functions. --- */
+
+grpc_jwt_claims* grpc_jwt_claims_from_json(grpc_core::Json json);
+grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims* claims,
+                                               const char* audience);
+const char* grpc_jwt_issuer_email_domain(const char* issuer);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/local/local_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/local/local_credentials.h
new file mode 100644
index 0000000..60a8a4f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/local/local_credentials.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* Main class for grpc local channel credential. */
+class grpc_local_credentials final : public grpc_channel_credentials {
+ public:
+  explicit grpc_local_credentials(grpc_local_connect_type connect_type);
+  ~grpc_local_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_local_connect_type connect_type() const { return connect_type_; }
+
+ private:
+  grpc_local_connect_type connect_type_;
+};
+
+/* Main class for grpc local server credential. */
+class grpc_local_server_credentials final : public grpc_server_credentials {
+ public:
+  explicit grpc_local_server_credentials(grpc_local_connect_type connect_type);
+  ~grpc_local_server_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  grpc_local_connect_type connect_type() const { return connect_type_; }
+
+ private:
+  grpc_local_connect_type connect_type_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/oauth2/oauth2_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/oauth2/oauth2_credentials.h
new file mode 100644
index 0000000..9757952
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/oauth2/oauth2_credentials.h	
@@ -0,0 +1,165 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+// Constants.
+#define GRPC_STS_POST_MINIMAL_BODY_FORMAT_STRING                               \
+  "grant_type=urn:ietf:params:oauth:grant-type:token-exchange&subject_token=%" \
+  "s&subject_token_type=%s"
+
+// auth_refresh_token parsing.
+typedef struct {
+  const char* type;
+  char* client_id;
+  char* client_secret;
+  char* refresh_token;
+} grpc_auth_refresh_token;
+
+/// Returns 1 if the object is valid, 0 otherwise.
+int grpc_auth_refresh_token_is_valid(
+    const grpc_auth_refresh_token* refresh_token);
+
+/// Creates a refresh token object from string. Returns an invalid object if a
+/// parsing error has been encountered.
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_string(
+    const char* json_string);
+
+/// Creates a refresh token object from parsed json. Returns an invalid object
+/// if a parsing error has been encountered.
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_json(
+    const grpc_core::Json& json);
+
+/// Destructs the object.
+void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token* refresh_token);
+
+// -- Oauth2 Token Fetcher credentials --
+//
+//  This object is a base for credentials that need to acquire an oauth2 token
+//  from an http service.
+
+struct grpc_oauth2_pending_get_request_metadata {
+  grpc_credentials_mdelem_array* md_array;
+  grpc_closure* on_request_metadata;
+  grpc_polling_entity* pollent;
+  struct grpc_oauth2_pending_get_request_metadata* next;
+};
+
+class grpc_oauth2_token_fetcher_credentials : public grpc_call_credentials {
+ public:
+  grpc_oauth2_token_fetcher_credentials();
+  ~grpc_oauth2_token_fetcher_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  void on_http_response(grpc_credentials_metadata_request* r,
+                        grpc_error* error);
+
+ protected:
+  virtual void fetch_oauth2(grpc_credentials_metadata_request* req,
+                            grpc_httpcli_context* httpcli_context,
+                            grpc_polling_entity* pollent, grpc_iomgr_cb_func cb,
+                            grpc_millis deadline) = 0;
+
+ private:
+  gpr_mu mu_;
+  grpc_mdelem access_token_md_ = GRPC_MDNULL;
+  gpr_timespec token_expiration_;
+  bool token_fetch_pending_ = false;
+  grpc_oauth2_pending_get_request_metadata* pending_requests_ = nullptr;
+  grpc_httpcli_context httpcli_context_;
+  grpc_polling_entity pollent_;
+};
+
+// Google refresh token credentials.
+class grpc_google_refresh_token_credentials final
+    : public grpc_oauth2_token_fetcher_credentials {
+ public:
+  grpc_google_refresh_token_credentials(grpc_auth_refresh_token refresh_token);
+  ~grpc_google_refresh_token_credentials() override;
+
+  const grpc_auth_refresh_token& refresh_token() const {
+    return refresh_token_;
+  }
+
+ protected:
+  void fetch_oauth2(grpc_credentials_metadata_request* req,
+                    grpc_httpcli_context* httpcli_context,
+                    grpc_polling_entity* pollent, grpc_iomgr_cb_func cb,
+                    grpc_millis deadline) override;
+
+ private:
+  grpc_auth_refresh_token refresh_token_;
+  grpc_closure http_post_cb_closure_;
+};
+
+// Access token credentials.
+class grpc_access_token_credentials final : public grpc_call_credentials {
+ public:
+  grpc_access_token_credentials(const char* access_token);
+  ~grpc_access_token_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_mdelem access_token_md_;
+};
+
+// Private constructor for refresh token credentials from an already parsed
+// refresh token. Takes ownership of the refresh token.
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_refresh_token_credentials_create_from_auth_refresh_token(
+    grpc_auth_refresh_token token);
+
+// Exposed for testing only.
+grpc_credentials_status
+grpc_oauth2_token_fetcher_credentials_parse_server_response(
+    const struct grpc_http_response* response, grpc_mdelem* token_md,
+    grpc_millis* token_lifetime);
+
+namespace grpc_core {
+// Exposed for testing only. This function validates the options, ensuring that
+// the required fields are set, and outputs the parsed URL of the STS token
+// exchanged service.
+grpc_error* ValidateStsCredentialsOptions(
+    const grpc_sts_credentials_options* options, grpc_uri** sts_url);
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/plugin/plugin_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/plugin/plugin_credentials.h
new file mode 100644
index 0000000..fb9a7b7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/plugin/plugin_credentials.h	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+extern grpc_core::TraceFlag grpc_plugin_credentials_trace;
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_plugin_credentials final : public grpc_call_credentials {
+ public:
+  struct pending_request {
+    bool cancelled;
+    struct grpc_plugin_credentials* creds;
+    grpc_credentials_mdelem_array* md_array;
+    grpc_closure* on_request_metadata;
+    struct pending_request* prev;
+    struct pending_request* next;
+  };
+
+  explicit grpc_plugin_credentials(grpc_metadata_credentials_plugin plugin,
+                                   grpc_security_level min_security_level);
+  ~grpc_plugin_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  // Checks if the request has been cancelled.
+  // If not, removes it from the pending list, so that it cannot be
+  // cancelled out from under us.
+  // When this returns, r->cancelled indicates whether the request was
+  // cancelled before completion.
+  void pending_request_complete(pending_request* r);
+
+ private:
+  void pending_request_remove_locked(pending_request* pending_request);
+
+  grpc_metadata_credentials_plugin plugin_;
+  gpr_mu mu_;
+  pending_request* pending_requests_ = nullptr;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/ssl/ssl_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/ssl/ssl_credentials.h
new file mode 100644
index 0000000..545a27f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/ssl/ssl_credentials.h	
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#include "src/core/lib/security/security_connector/ssl/ssl_security_connector.h"
+
+class grpc_ssl_credentials : public grpc_channel_credentials {
+ public:
+  grpc_ssl_credentials(const char* pem_root_certs,
+                       grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+                       const grpc_ssl_verify_peer_options* verify_options);
+
+  ~grpc_ssl_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+ private:
+  void build_config(const char* pem_root_certs,
+                    grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+                    const grpc_ssl_verify_peer_options* verify_options);
+
+  grpc_ssl_config config_;
+};
+
+struct grpc_ssl_server_certificate_config {
+  grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs = nullptr;
+  size_t num_key_cert_pairs = 0;
+  char* pem_root_certs = nullptr;
+};
+
+struct grpc_ssl_server_certificate_config_fetcher {
+  grpc_ssl_server_certificate_config_callback cb = nullptr;
+  void* user_data;
+};
+
+class grpc_ssl_server_credentials final : public grpc_server_credentials {
+ public:
+  grpc_ssl_server_credentials(
+      const grpc_ssl_server_credentials_options& options);
+  ~grpc_ssl_server_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  bool has_cert_config_fetcher() const {
+    return certificate_config_fetcher_.cb != nullptr;
+  }
+
+  grpc_ssl_certificate_config_reload_status FetchCertConfig(
+      grpc_ssl_server_certificate_config** config) {
+    GPR_DEBUG_ASSERT(has_cert_config_fetcher());
+    return certificate_config_fetcher_.cb(certificate_config_fetcher_.user_data,
+                                          config);
+  }
+
+  const grpc_ssl_server_config& config() const { return config_; }
+
+ private:
+  void build_config(
+      const char* pem_root_certs,
+      grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs, size_t num_key_cert_pairs,
+      grpc_ssl_client_certificate_request_type client_certificate_request);
+
+  grpc_ssl_server_config config_;
+  grpc_ssl_server_certificate_config_fetcher certificate_config_fetcher_;
+};
+
+tsi_ssl_pem_key_cert_pair* grpc_convert_grpc_to_tsi_cert_pairs(
+    const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs);
+
+void grpc_tsi_ssl_pem_key_cert_pairs_destroy(tsi_ssl_pem_key_cert_pair* kp,
+                                             size_t num_key_cert_pairs);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h
new file mode 100644
index 0000000..a9e2495
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h	
@@ -0,0 +1,286 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+
+/** TLS key materials config. **/
+struct grpc_tls_key_materials_config
+    : public grpc_core::RefCounted<grpc_tls_key_materials_config> {
+ public:
+  typedef grpc_core::InlinedVector<grpc_core::PemKeyCertPair, 1>
+      PemKeyCertPairList;
+
+  /** Getters for member fields. **/
+  const char* pem_root_certs() const { return pem_root_certs_.get(); }
+  const PemKeyCertPairList& pem_key_cert_pair_list() const {
+    return pem_key_cert_pair_list_;
+  }
+  int version() const { return version_; }
+
+  /** Setters for member fields. **/
+  void set_pem_root_certs(grpc_core::UniquePtr<char> pem_root_certs) {
+    pem_root_certs_ = std::move(pem_root_certs);
+  }
+  void add_pem_key_cert_pair(grpc_core::PemKeyCertPair pem_key_cert_pair) {
+    pem_key_cert_pair_list_.push_back(pem_key_cert_pair);
+  }
+  void set_key_materials(grpc_core::UniquePtr<char> pem_root_certs,
+                         PemKeyCertPairList pem_key_cert_pair_list);
+  void set_version(int version) { version_ = version; }
+
+ private:
+  int version_ = 0;
+  PemKeyCertPairList pem_key_cert_pair_list_;
+  grpc_core::UniquePtr<char> pem_root_certs_;
+};
+
+/** TLS credential reload config. **/
+struct grpc_tls_credential_reload_config
+    : public grpc_core::RefCounted<grpc_tls_credential_reload_config> {
+ public:
+  grpc_tls_credential_reload_config(
+      const void* config_user_data,
+      int (*schedule)(void* config_user_data,
+                      grpc_tls_credential_reload_arg* arg),
+      void (*cancel)(void* config_user_data,
+                     grpc_tls_credential_reload_arg* arg),
+      void (*destruct)(void* config_user_data));
+  ~grpc_tls_credential_reload_config();
+
+  void* context() const { return context_; }
+  void set_context(void* context) { context_ = context; }
+
+  int Schedule(grpc_tls_credential_reload_arg* arg) const {
+    if (schedule_ == nullptr) {
+      gpr_log(GPR_ERROR, "schedule API is nullptr");
+      if (arg != nullptr) {
+        arg->status = GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL;
+        arg->error_details =
+            gpr_strdup("schedule API in credential reload config is nullptr");
+      }
+      return 1;
+    }
+    if (arg != nullptr) {
+      arg->config = const_cast<grpc_tls_credential_reload_config*>(this);
+    }
+    return schedule_(config_user_data_, arg);
+  }
+  void Cancel(grpc_tls_credential_reload_arg* arg) const {
+    if (cancel_ == nullptr) {
+      gpr_log(GPR_ERROR, "cancel API is nullptr.");
+      if (arg != nullptr) {
+        arg->status = GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL;
+        arg->error_details =
+            gpr_strdup("cancel API in credential reload config is nullptr");
+      }
+      return;
+    }
+    if (arg != nullptr) {
+      arg->config = const_cast<grpc_tls_credential_reload_config*>(this);
+    }
+    cancel_(config_user_data_, arg);
+  }
+
+ private:
+  /** This is a pointer to the wrapped language implementation of
+   * grpc_tls_credential_reload_config. It is necessary to implement the C
+   * schedule and cancel functions, given the schedule or cancel function in a
+   * wrapped language. **/
+  void* context_ = nullptr;
+  /** config-specific, read-only user data that works for all channels created
+     with a credential using the config. */
+  void* config_user_data_;
+  /** callback function for invoking credential reload API. The implementation
+     of this method has to be non-blocking, but can be performed synchronously
+     or asynchronously.
+     If processing occurs synchronously, it populates \a arg->key_materials, \a
+     arg->status, and \a arg->error_details and returns zero.
+     If processing occurs asynchronously, it returns a non-zero value.
+     Application then invokes \a arg->cb when processing is completed. Note that
+     \a arg->cb cannot be invoked before \a schedule returns.
+  */
+  int (*schedule_)(void* config_user_data, grpc_tls_credential_reload_arg* arg);
+  /** callback function for cancelling a credential reload request scheduled via
+     an asynchronous \a schedule. \a arg is used to pinpoint an exact reloading
+     request to be cancelled, and the operation may not have any effect if the
+     request has already been processed. */
+  void (*cancel_)(void* config_user_data, grpc_tls_credential_reload_arg* arg);
+  /** callback function for cleaning up any data associated with credential
+     reload config. */
+  void (*destruct_)(void* config_user_data);
+};
+
+/** TLS server authorization check config. **/
+struct grpc_tls_server_authorization_check_config
+    : public grpc_core::RefCounted<grpc_tls_server_authorization_check_config> {
+ public:
+  grpc_tls_server_authorization_check_config(
+      const void* config_user_data,
+      int (*schedule)(void* config_user_data,
+                      grpc_tls_server_authorization_check_arg* arg),
+      void (*cancel)(void* config_user_data,
+                     grpc_tls_server_authorization_check_arg* arg),
+      void (*destruct)(void* config_user_data));
+  ~grpc_tls_server_authorization_check_config();
+
+  void* context() const { return context_; }
+  void set_context(void* context) { context_ = context; }
+
+  int Schedule(grpc_tls_server_authorization_check_arg* arg) const {
+    if (schedule_ == nullptr) {
+      gpr_log(GPR_ERROR, "schedule API is nullptr");
+      if (arg != nullptr) {
+        arg->status = GRPC_STATUS_NOT_FOUND;
+        arg->error_details = gpr_strdup(
+            "schedule API in server authorization check config is nullptr");
+      }
+      return 1;
+    }
+    if (arg != nullptr && context_ != nullptr) {
+      arg->config =
+          const_cast<grpc_tls_server_authorization_check_config*>(this);
+    }
+    return schedule_(config_user_data_, arg);
+  }
+  void Cancel(grpc_tls_server_authorization_check_arg* arg) const {
+    if (cancel_ == nullptr) {
+      gpr_log(GPR_ERROR, "cancel API is nullptr.");
+      if (arg != nullptr) {
+        arg->status = GRPC_STATUS_NOT_FOUND;
+        arg->error_details = gpr_strdup(
+            "schedule API in server authorization check config is nullptr");
+      }
+      return;
+    }
+    if (arg != nullptr) {
+      arg->config =
+          const_cast<grpc_tls_server_authorization_check_config*>(this);
+    }
+    cancel_(config_user_data_, arg);
+  }
+
+ private:
+  /** This is a pointer to the wrapped language implementation of
+   * grpc_tls_server_authorization_check_config. It is necessary to implement
+   * the C schedule and cancel functions, given the schedule or cancel function
+   * in a wrapped language. **/
+  void* context_ = nullptr;
+  /** config-specific, read-only user data that works for all channels created
+     with a Credential using the config. */
+  void* config_user_data_;
+
+  /** callback function for invoking server authorization check. The
+     implementation of this method has to be non-blocking, but can be performed
+     synchronously or asynchronously.
+     If processing occurs synchronously, it populates \a arg->result, \a
+     arg->status, and \a arg->error_details, and returns zero.
+     If processing occurs asynchronously, it returns a non-zero value.
+     Application then invokes \a arg->cb when processing is completed. Note that
+     \a arg->cb cannot be invoked before \a schedule() returns.
+  */
+  int (*schedule_)(void* config_user_data,
+                   grpc_tls_server_authorization_check_arg* arg);
+
+  /** callback function for canceling a server authorization check request. */
+  void (*cancel_)(void* config_user_data,
+                  grpc_tls_server_authorization_check_arg* arg);
+
+  /** callback function for cleaning up any data associated with server
+     authorization check config. */
+  void (*destruct_)(void* config_user_data);
+};
+
+/* TLS credentials options. */
+struct grpc_tls_credentials_options
+    : public grpc_core::RefCounted<grpc_tls_credentials_options> {
+ public:
+  ~grpc_tls_credentials_options() {
+    if (key_materials_config_.get() != nullptr) {
+      key_materials_config_.get()->Unref();
+    }
+    if (credential_reload_config_.get() != nullptr) {
+      credential_reload_config_.get()->Unref();
+    }
+    if (server_authorization_check_config_.get() != nullptr) {
+      server_authorization_check_config_.get()->Unref();
+    }
+  }
+
+  /* Getters for member fields. */
+  grpc_ssl_client_certificate_request_type cert_request_type() const {
+    return cert_request_type_;
+  }
+  grpc_tls_server_verification_option server_verification_option() const {
+    return server_verification_option_;
+  }
+  grpc_tls_key_materials_config* key_materials_config() const {
+    return key_materials_config_.get();
+  }
+  grpc_tls_credential_reload_config* credential_reload_config() const {
+    return credential_reload_config_.get();
+  }
+  grpc_tls_server_authorization_check_config*
+  server_authorization_check_config() const {
+    return server_authorization_check_config_.get();
+  }
+
+  /* Setters for member fields. */
+  void set_cert_request_type(
+      const grpc_ssl_client_certificate_request_type type) {
+    cert_request_type_ = type;
+  }
+  void set_server_verification_option(
+      const grpc_tls_server_verification_option server_verification_option) {
+    server_verification_option_ = server_verification_option;
+  }
+  void set_key_materials_config(
+      grpc_core::RefCountedPtr<grpc_tls_key_materials_config> config) {
+    key_materials_config_ = std::move(config);
+  }
+  void set_credential_reload_config(
+      grpc_core::RefCountedPtr<grpc_tls_credential_reload_config> config) {
+    credential_reload_config_ = std::move(config);
+  }
+  void set_server_authorization_check_config(
+      grpc_core::RefCountedPtr<grpc_tls_server_authorization_check_config>
+          config) {
+    server_authorization_check_config_ = std::move(config);
+  }
+
+ private:
+  grpc_ssl_client_certificate_request_type cert_request_type_;
+  grpc_tls_server_verification_option server_verification_option_ =
+      GRPC_TLS_SERVER_VERIFICATION;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+  grpc_core::RefCountedPtr<grpc_tls_credential_reload_config>
+      credential_reload_config_;
+  grpc_core::RefCountedPtr<grpc_tls_server_authorization_check_config>
+      server_authorization_check_config_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/tls_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/tls_credentials.h
new file mode 100644
index 0000000..388c71f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/credentials/tls/tls_credentials.h	
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+class TlsCredentials final : public grpc_channel_credentials {
+ public:
+  explicit TlsCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options> options);
+  ~TlsCredentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  const grpc_tls_credentials_options& options() const { return *options_; }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_tls_credentials_options> options_;
+};
+
+class TlsServerCredentials final : public grpc_server_credentials {
+ public:
+  explicit TlsServerCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options> options);
+  ~TlsServerCredentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  const grpc_tls_credentials_options& options() const { return *options_; }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_tls_credentials_options> options_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/alts/alts_security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/alts/alts_security_connector.h
new file mode 100644
index 0000000..10c3fe9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/alts/alts_security_connector.h	
@@ -0,0 +1,76 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+
+#define GRPC_ALTS_TRANSPORT_SECURITY_TYPE "alts"
+#define GRPC_ALTS_URL_SCHEME "https"
+
+/**
+ * This method creates an ALTS channel security connector.
+ *
+ * - channel_creds: channel credential instance.
+ * - request_metadata_creds: credential object which will be sent with each
+ *   request. This parameter can be nullptr.
+ * - target_name: the name of the endpoint that the channel is connecting to.
+ * - sc: address of ALTS channel security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_alts_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name);
+
+/**
+ * This method creates an ALTS server security connector.
+ *
+ * - server_creds: server credential instance.
+ * - sc: address of ALTS server security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_alts_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+/* Initializes rpc_versions. */
+void grpc_alts_set_rpc_protocol_versions(
+    grpc_gcp_rpc_protocol_versions* rpc_versions);
+
+namespace grpc_core {
+namespace internal {
+
+/* Exposed only for testing. */
+grpc_core::RefCountedPtr<grpc_auth_context>
+grpc_alts_auth_context_from_tsi_peer(const tsi_peer* peer);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/fake/fake_security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/fake/fake_security_connector.h
new file mode 100644
index 0000000..344a234
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/fake/fake_security_connector.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+#define GRPC_FAKE_SECURITY_URL_SCHEME "http+fake_security"
+
+/* Creates a fake connector that emulates real channel security.  */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_fake_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target, const grpc_channel_args* args);
+
+/* Creates a fake connector that emulates real server security.  */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_fake_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots.h
new file mode 100644
index 0000000..5fdec15
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H
+
+namespace grpc_core {
+
+// Returns a slice containing roots from the OS trust store
+grpc_slice LoadSystemRootCerts();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots_linux.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots_linux.h
new file mode 100644
index 0000000..12617df
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/load_system_roots_linux.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX
+
+namespace grpc_core {
+
+// Creates a bundle slice containing the contents of all certificate files in
+// a directory.
+// Returns such slice.
+// Exposed for testing purposes only.
+grpc_slice CreateRootCertsBundle(const char* certs_directory);
+
+// Gets the absolute file path needed to load a certificate file.
+// Populates path_buffer, which must be of size MAXPATHLEN.
+// Exposed for testing purposes only.
+void GetAbsoluteFilePath(const char* valid_file_dir,
+                         const char* file_entry_name, char* path_buffer);
+
+}  // namespace grpc_core
+
+#endif /* GPR_LINUX */
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/local/local_security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/local/local_security_connector.h
new file mode 100644
index 0000000..6eee0ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/local/local_security_connector.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/context/security_context.h"
+
+/**
+ * This method creates a local channel security connector.
+ *
+ * - channel_creds: channel credential instance.
+ * - request_metadata_creds: credential object which will be sent with each
+ *   request. This parameter can be nullptr.
+ * - target_name: the name of the endpoint that the channel is connecting to.
+ * - args: channel args passed from the caller.
+ * - sc: address of local channel security connector instance to be returned
+ *   from the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_local_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_channel_args* args, const char* target_name);
+
+/**
+ * This method creates a local server security connector.
+ *
+ * - server_creds: server credential instance.
+ * - sc: address of local server security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_local_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/security_connector.h
new file mode 100644
index 0000000..32033ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/security_connector.h	
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_security_connector_refcount;
+
+typedef enum { GRPC_SECURITY_OK = 0, GRPC_SECURITY_ERROR } grpc_security_status;
+
+/* --- security_connector object. ---
+
+    A security connector object represents away to configure the underlying
+    transport security mechanism and check the resulting trusted peer.  */
+
+#define GRPC_ARG_SECURITY_CONNECTOR "grpc.security_connector"
+
+class grpc_security_connector
+    : public grpc_core::RefCounted<grpc_security_connector> {
+ public:
+  explicit grpc_security_connector(const char* url_scheme)
+      : grpc_core::RefCounted<grpc_security_connector>(
+            &grpc_trace_security_connector_refcount),
+        url_scheme_(url_scheme) {}
+  virtual ~grpc_security_connector() = default;
+
+  /* Check the peer. Callee takes ownership of the peer object.
+     When done, sets *auth_context and invokes on_peer_checked. */
+  virtual void check_peer(
+      tsi_peer peer, grpc_endpoint* ep,
+      grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+      grpc_closure* on_peer_checked) = 0;
+
+  /* Compares two security connectors. */
+  virtual int cmp(const grpc_security_connector* other) const = 0;
+
+  const char* url_scheme() const { return url_scheme_; }
+
+ private:
+  const char* url_scheme_;
+};
+
+/* Util to encapsulate the connector in a channel arg. */
+grpc_arg grpc_security_connector_to_arg(grpc_security_connector* sc);
+
+/* Util to get the connector from a channel arg. */
+grpc_security_connector* grpc_security_connector_from_arg(const grpc_arg* arg);
+
+/* Util to find the connector from channel args. */
+grpc_security_connector* grpc_security_connector_find_in_args(
+    const grpc_channel_args* args);
+
+/* --- channel_security_connector object. ---
+
+    A channel security connector object represents a way to configure the
+    underlying transport security mechanism on the client side.  */
+
+class grpc_channel_security_connector : public grpc_security_connector {
+ public:
+  grpc_channel_security_connector(
+      const char* url_scheme,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds
+      /*,
+      grpc_channel_args* channel_args = nullptr*/);
+  ~grpc_channel_security_connector() override;
+
+  /// Checks that the host that will be set for a call is acceptable.
+  /// Returns true if completed synchronously, in which case \a error will
+  /// be set to indicate the result.  Otherwise, \a on_call_host_checked
+  /// will be invoked when complete.
+  virtual bool check_call_host(grpc_core::StringView host,
+                               grpc_auth_context* auth_context,
+                               grpc_closure* on_call_host_checked,
+                               grpc_error** error) = 0;
+  /// Cancels a pending asynchronous call to
+  /// grpc_channel_security_connector_check_call_host() with
+  /// \a on_call_host_checked as its callback.
+  virtual void cancel_check_call_host(grpc_closure* on_call_host_checked,
+                                      grpc_error* error) = 0;
+  /// Registers handshakers with \a handshake_mgr.
+  virtual void add_handshakers(const grpc_channel_args* args,
+                               grpc_pollset_set* interested_parties,
+                               grpc_core::HandshakeManager* handshake_mgr) = 0;
+
+  const grpc_channel_credentials* channel_creds() const {
+    return channel_creds_.get();
+  }
+  grpc_channel_credentials* mutable_channel_creds() {
+    return channel_creds_.get();
+  }
+  const grpc_call_credentials* request_metadata_creds() const {
+    return request_metadata_creds_.get();
+  }
+  grpc_call_credentials* mutable_request_metadata_creds() {
+    return request_metadata_creds_.get();
+  }
+
+ protected:
+  // Helper methods to be used in subclasses.
+  int channel_security_connector_cmp(
+      const grpc_channel_security_connector* other) const;
+
+  // grpc_channel_args* channel_args() const { return channel_args_.get(); }
+  //// Should be called as soon as the channel args are not needed to reduce
+  //// memory usage.
+  // void clear_channel_arg() { channel_args_.reset(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds_;
+  grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds_;
+  std::unique_ptr<grpc_channel_args> channel_args_;
+};
+
+/* --- server_security_connector object. ---
+
+    A server security connector object represents a way to configure the
+    underlying transport security mechanism on the server side.  */
+
+class grpc_server_security_connector : public grpc_security_connector {
+ public:
+  grpc_server_security_connector(
+      const char* url_scheme,
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+  ~grpc_server_security_connector() override = default;
+
+  virtual void add_handshakers(const grpc_channel_args* args,
+                               grpc_pollset_set* interested_parties,
+                               grpc_core::HandshakeManager* handshake_mgr) = 0;
+
+  const grpc_server_credentials* server_creds() const {
+    return server_creds_.get();
+  }
+  grpc_server_credentials* mutable_server_creds() {
+    return server_creds_.get();
+  }
+
+ protected:
+  // Helper methods to be used in subclasses.
+  int server_security_connector_cmp(
+      const grpc_server_security_connector* other) const;
+
+ private:
+  grpc_core::RefCountedPtr<grpc_server_credentials> server_creds_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl/ssl_security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl/ssl_security_connector.h
new file mode 100644
index 0000000..70e26e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl/ssl_security_connector.h	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+typedef struct {
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pair;
+  char* pem_root_certs;
+  verify_peer_options verify_options;
+} grpc_ssl_config;
+
+/* Creates an SSL channel_security_connector.
+   - request_metadata_creds is the credentials object which metadata
+     will be sent with each request. This parameter can be NULL.
+   - config is the SSL config to be used for the SSL channel establishment.
+   - is_client should be 0 for a server or a non-0 value for a client.
+   - secure_peer_name is the secure peer name that should be checked in
+     grpc_channel_security_connector_check_peer. This parameter may be NULL in
+     which case the peer name will not be checked. Note that if this parameter
+     is not NULL, then, pem_root_certs should not be NULL either.
+   - sc is a pointer on the connector to be created.
+  This function returns GRPC_SECURITY_OK in case of success or a
+  specific error code otherwise.
+*/
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_ssl_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_ssl_config* config, const char* target_name,
+    const char* overridden_target_name,
+    tsi_ssl_session_cache* ssl_session_cache);
+
+/* Config for ssl servers. */
+typedef struct {
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs = nullptr;
+  size_t num_key_cert_pairs = 0;
+  char* pem_root_certs = nullptr;
+  grpc_ssl_client_certificate_request_type client_certificate_request =
+      GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE;
+} grpc_ssl_server_config;
+
+/* Creates an SSL server_security_connector.
+   - config is the SSL config to be used for the SSL channel establishment.
+   - sc is a pointer on the connector to be created.
+  This function returns GRPC_SECURITY_OK in case of success or a
+  specific error code otherwise.
+*/
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_ssl_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_credentials);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils.h
new file mode 100644
index 0000000..c521b1f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils.h	
@@ -0,0 +1,182 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/security_connector/ssl_utils_config.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+/* --- Util --- */
+
+/* --- URL schemes. --- */
+#define GRPC_SSL_URL_SCHEME "https"
+
+/* Check ALPN information returned from SSL handshakes. */
+grpc_error* grpc_ssl_check_alpn(const tsi_peer* peer);
+
+/* Check peer name information returned from SSL handshakes. */
+grpc_error* grpc_ssl_check_peer_name(grpc_core::StringView peer_name,
+                                     const tsi_peer* peer);
+/* Compare targer_name information extracted from SSL security connectors. */
+int grpc_ssl_cmp_target_name(
+    grpc_core::StringView target_name, grpc_core::StringView other_target_name,
+    grpc_core::StringView overridden_target_name,
+    grpc_core::StringView other_overridden_target_name);
+/* Check the host that will be set for a call is acceptable.*/
+bool grpc_ssl_check_call_host(grpc_core::StringView host,
+                              grpc_core::StringView target_name,
+                              grpc_core::StringView overridden_target_name,
+                              grpc_auth_context* auth_context,
+                              grpc_error** error);
+/* Return HTTP2-compliant cipher suites that gRPC accepts by default. */
+const char* grpc_get_ssl_cipher_suites(void);
+
+/* Map from grpc_ssl_client_certificate_request_type to
+ * tsi_client_certificate_request_type. */
+tsi_client_certificate_request_type
+grpc_get_tsi_client_certificate_request_type(
+    grpc_ssl_client_certificate_request_type grpc_request_type);
+
+/* Map tsi_security_level string to grpc_security_level enum. */
+grpc_security_level grpc_tsi_security_level_string_to_enum(
+    const char* security_level);
+
+/* Map grpc_security_level enum to a string. */
+const char* grpc_security_level_to_string(grpc_security_level security_level);
+
+/* Check security level of channel and call credential.*/
+bool grpc_check_security_level(grpc_security_level channel_level,
+                               grpc_security_level call_cred_level);
+
+/* Return an array of strings containing alpn protocols. */
+const char** grpc_fill_alpn_protocol_strings(size_t* num_alpn_protocols);
+
+/* Initialize TSI SSL server/client handshaker factory. */
+grpc_security_status grpc_ssl_tsi_client_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* key_cert_pair, const char* pem_root_certs,
+    bool skip_server_certificate_verification,
+    tsi_ssl_session_cache* ssl_session_cache,
+    tsi_ssl_client_handshaker_factory** handshaker_factory);
+
+grpc_security_status grpc_ssl_tsi_server_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* key_cert_pairs, size_t num_key_cert_pairs,
+    const char* pem_root_certs,
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    tsi_ssl_server_handshaker_factory** handshaker_factory);
+
+/* Exposed for testing only. */
+grpc_core::RefCountedPtr<grpc_auth_context> grpc_ssl_peer_to_auth_context(
+    const tsi_peer* peer, const char* transport_security_type);
+tsi_peer grpc_shallow_peer_from_ssl_auth_context(
+    const grpc_auth_context* auth_context);
+void grpc_shallow_peer_destruct(tsi_peer* peer);
+int grpc_ssl_host_matches_name(const tsi_peer* peer,
+                               grpc_core::StringView peer_name);
+
+/* --- Default SSL Root Store. --- */
+namespace grpc_core {
+
+// The class implements default SSL root store.
+class DefaultSslRootStore {
+ public:
+  // Gets the default SSL root store. Returns nullptr if not found.
+  static const tsi_ssl_root_certs_store* GetRootStore();
+
+  // Gets the default PEM root certificate.
+  static const char* GetPemRootCerts();
+
+ protected:
+  // Returns default PEM root certificates in nullptr terminated grpc_slice.
+  // This function is protected instead of private, so that it can be tested.
+  static grpc_slice ComputePemRootCerts();
+
+ private:
+  // Construct me not!
+  DefaultSslRootStore();
+
+  // Initialization of default SSL root store.
+  static void InitRootStore();
+
+  // One-time initialization of default SSL root store.
+  static void InitRootStoreOnce();
+
+  // SSL root store in tsi_ssl_root_certs_store object.
+  static tsi_ssl_root_certs_store* default_root_store_;
+
+  // Default PEM root certificates.
+  static grpc_slice default_pem_root_certs_;
+};
+
+class PemKeyCertPair {
+ public:
+  // Construct from the C struct.  We steal its members and then immediately
+  // free it.
+  explicit PemKeyCertPair(grpc_ssl_pem_key_cert_pair* pair)
+      : private_key_(const_cast<char*>(pair->private_key)),
+        cert_chain_(const_cast<char*>(pair->cert_chain)) {
+    gpr_free(pair);
+  }
+
+  // Movable.
+  PemKeyCertPair(PemKeyCertPair&& other) {
+    private_key_ = std::move(other.private_key_);
+    cert_chain_ = std::move(other.cert_chain_);
+  }
+  PemKeyCertPair& operator=(PemKeyCertPair&& other) {
+    private_key_ = std::move(other.private_key_);
+    cert_chain_ = std::move(other.cert_chain_);
+    return *this;
+  }
+
+  // Copyable.
+  PemKeyCertPair(const PemKeyCertPair& other)
+      : private_key_(gpr_strdup(other.private_key())),
+        cert_chain_(gpr_strdup(other.cert_chain())) {}
+  PemKeyCertPair& operator=(const PemKeyCertPair& other) {
+    private_key_ = grpc_core::UniquePtr<char>(gpr_strdup(other.private_key()));
+    cert_chain_ = grpc_core::UniquePtr<char>(gpr_strdup(other.cert_chain()));
+    return *this;
+  }
+
+  char* private_key() const { return private_key_.get(); }
+  char* cert_chain() const { return cert_chain_.get(); }
+
+ private:
+  grpc_core::UniquePtr<char> private_key_;
+  grpc_core::UniquePtr<char> cert_chain_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils_config.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils_config.h
new file mode 100644
index 0000000..efaf497
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/ssl_utils_config.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_default_ssl_roots_file_path);
+GPR_GLOBAL_CONFIG_DECLARE_BOOL(grpc_not_use_system_ssl_roots);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/tls/tls_security_connector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/tls/tls_security_connector.h
new file mode 100644
index 0000000..85c6976
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/security_connector/tls/tls_security_connector.h	
@@ -0,0 +1,161 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+#define GRPC_TLS_TRANSPORT_SECURITY_TYPE "tls"
+
+namespace grpc_core {
+
+// TLS channel security connector.
+class TlsChannelSecurityConnector final
+    : public grpc_channel_security_connector {
+ public:
+  // static factory method to create a TLS channel security connector.
+  static grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  CreateTlsChannelSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const char* overridden_target_name,
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  TlsChannelSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const char* overridden_target_name);
+  ~TlsChannelSecurityConnector() override;
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* interested_parties,
+                       grpc_core::HandshakeManager* handshake_mgr) override;
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override;
+
+  int cmp(const grpc_security_connector* other_sc) const override;
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* auth_context,
+                       grpc_closure* on_call_host_checked,
+                       grpc_error** error) override;
+
+  void cancel_check_call_host(grpc_closure* on_call_host_checked,
+                              grpc_error* error) override;
+
+ private:
+  // Initialize SSL TSI client handshaker factory.
+  grpc_security_status InitializeHandshakerFactory(
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  // A util function to create a new client handshaker factory to replace
+  // the existing one if exists.
+  grpc_security_status ReplaceHandshakerFactory(
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  // gRPC-provided callback executed by application, which servers to bring the
+  // control back to gRPC core.
+  static void ServerAuthorizationCheckDone(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to process server authorization check result.
+  static grpc_error* ProcessServerAuthorizationCheckResult(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to create a server authorization check arg instance.
+  static grpc_tls_server_authorization_check_arg*
+  ServerAuthorizationCheckArgCreate(void* user_data);
+
+  // A util function to destroy a server authorization check arg instance.
+  static void ServerAuthorizationCheckArgDestroy(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to refresh SSL TSI client handshaker factory with a valid
+  // credential.
+  grpc_security_status RefreshHandshakerFactory();
+
+  grpc_core::Mutex mu_;
+  grpc_closure* on_peer_checked_;
+  grpc_core::UniquePtr<char> target_name_;
+  grpc_core::UniquePtr<char> overridden_target_name_;
+  tsi_ssl_client_handshaker_factory* client_handshaker_factory_ = nullptr;
+  grpc_tls_server_authorization_check_arg* check_arg_;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+};
+
+// TLS server security connector.
+class TlsServerSecurityConnector final : public grpc_server_security_connector {
+ public:
+  // static factory method to create a TLS server security connector.
+  static grpc_core::RefCountedPtr<grpc_server_security_connector>
+  CreateTlsServerSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+  explicit TlsServerSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+  ~TlsServerSecurityConnector() override;
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* interested_parties,
+                       grpc_core::HandshakeManager* handshake_mgr) override;
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override;
+
+  int cmp(const grpc_security_connector* other) const override;
+
+ private:
+  // Initialize SSL TSI server handshaker factory.
+  grpc_security_status InitializeHandshakerFactory();
+
+  // A util function to create a new server handshaker factory to replace the
+  // existing once if exists.
+  grpc_security_status ReplaceHandshakerFactory();
+
+  // A util function to refresh SSL TSI server handshaker factory with a valid
+  // credential.
+  grpc_security_status RefreshHandshakerFactory();
+
+  grpc_core::Mutex mu_;
+  tsi_ssl_server_handshaker_factory* server_handshaker_factory_ = nullptr;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+};
+
+// ---- Functions below are exposed for testing only -----------------------
+grpc_status_code TlsFetchKeyMaterials(
+    const grpc_core::RefCountedPtr<grpc_tls_key_materials_config>&
+        key_materials_config,
+    const grpc_tls_credentials_options& options, bool server_config,
+    grpc_ssl_certificate_config_reload_status* status);
+
+// TlsCheckHostName checks if |peer_name| matches the identity information
+// contained in |peer|. This is AKA hostname check.
+grpc_error* TlsCheckHostName(const char* peer_name, const tsi_peer* peer);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/auth_filters.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/auth_filters.h
new file mode 100644
index 0000000..5e73c21
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/auth_filters.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_client_auth_filter;
+extern const grpc_channel_filter grpc_server_auth_filter;
+
+void grpc_auth_metadata_context_build(
+    const char* url_scheme, const grpc_slice& call_host,
+    const grpc_slice& call_method, grpc_auth_context* auth_context,
+    grpc_auth_metadata_context* auth_md_context);
+
+void grpc_auth_metadata_context_copy(grpc_auth_metadata_context* from,
+                                     grpc_auth_metadata_context* to);
+
+void grpc_auth_metadata_context_reset(grpc_auth_metadata_context* context);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/secure_endpoint.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/secure_endpoint.h
new file mode 100644
index 0000000..e7e3351
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/secure_endpoint.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/iomgr/endpoint.h"
+
+struct tsi_frame_protector;
+struct tsi_zero_copy_grpc_protector;
+
+extern grpc_core::TraceFlag grpc_trace_secure_endpoint;
+
+/* Takes ownership of protector, zero_copy_protector, and to_wrap, and refs
+ * leftover_slices. If zero_copy_protector is not NULL, protector will never be
+ * used. */
+grpc_endpoint* grpc_secure_endpoint_create(
+    struct tsi_frame_protector* protector,
+    struct tsi_zero_copy_grpc_protector* zero_copy_protector,
+    grpc_endpoint* to_wrap, grpc_slice* leftover_slices,
+    size_t leftover_nslices);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/security_handshaker.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/security_handshaker.h
new file mode 100644
index 0000000..a9e1fe8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/security_handshaker.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+namespace grpc_core {
+
+/// Creates a security handshaker using \a handshaker.
+RefCountedPtr<Handshaker> SecurityHandshakerCreate(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args);
+
+/// Registers security handshaker factories.
+void SecurityRegisterHandshakerFactories();
+
+}  // namespace grpc_core
+
+// TODO(arjunroy): This is transitional to account for the new handshaker API
+// and will eventually be removed entirely.
+grpc_handshaker* grpc_security_handshaker_create(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/target_authority_table.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/target_authority_table.h
new file mode 100644
index 0000000..10ed66f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/target_authority_table.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_hash_table.h"
+
+namespace grpc_core {
+
+/// A hash table mapping target addresses to authorities.
+typedef SliceHashTable<grpc_core::UniquePtr<char>> TargetAuthorityTable;
+
+/// Returns a channel argument containing \a table.
+grpc_arg CreateTargetAuthorityTableChannelArg(TargetAuthorityTable* table);
+
+/// Returns the target authority table from \a args or nullptr.
+TargetAuthorityTable* FindTargetAuthorityTableInArgs(
+    const grpc_channel_args* args);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/tsi_error.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/tsi_error.h
new file mode 100644
index 0000000..16e04f7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/transport/tsi_error.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+grpc_error* grpc_set_tsi_error_result(grpc_error* error, tsi_result result);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/util/json_util.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/util/json_util.h
new file mode 100644
index 0000000..42f7005
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/security/util/json_util.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H
+#define GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+// Constants.
+#define GRPC_AUTH_JSON_TYPE_INVALID "invalid"
+#define GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT "service_account"
+#define GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER "authorized_user"
+
+// Gets a child property from a json node.
+const char* grpc_json_get_string_property(const grpc_core::Json& json,
+                                          const char* prop_name,
+                                          grpc_error** error);
+
+// Copies the value of the json child property specified by prop_name.
+// Returns false if the property was not found.
+bool grpc_copy_json_string_property(const grpc_core::Json& json,
+                                    const char* prop_name, char** copied_value);
+
+#endif /* GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/b64.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/b64.h
new file mode 100644
index 0000000..65ba662
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/b64.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_B64_H
+#define GRPC_CORE_LIB_SLICE_B64_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+/* Encodes data using base64. It is the caller's responsibility to free
+   the returned char * using gpr_free. Returns NULL on NULL input.
+   TODO(makdharma) : change the flags to bool from int */
+char* grpc_base64_encode(const void* data, size_t data_size, int url_safe,
+                         int multiline);
+
+/* estimate the upper bound on size of base64 encoded data. The actual size
+ * is guaranteed to be less than or equal to the size returned here. */
+size_t grpc_base64_estimate_encoded_size(size_t data_size, int multiline);
+
+/* Encodes data using base64 and write it to memory pointed to by result. It is
+ * the caller's responsibility to allocate enough memory in |result| to fit the
+ * encoded data. */
+void grpc_base64_encode_core(char* result, const void* vdata, size_t data_size,
+                             int url_safe, int multiline);
+
+/* Decodes data according to the base64 specification. Returns an empty
+   slice in case of failure. */
+grpc_slice grpc_base64_decode(const char* b64, int url_safe);
+
+/* Same as above except that the length is provided by the caller. */
+grpc_slice grpc_base64_decode_with_len(const char* b64, size_t b64_len,
+                                       int url_safe);
+
+#endif /* GRPC_CORE_LIB_SLICE_B64_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/percent_encoding.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/percent_encoding.h
new file mode 100644
index 0000000..43b20f0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/percent_encoding.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H
+#define GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H
+
+/* Percent encoding and decoding of slices.
+   Transforms arbitrary strings into safe-for-transmission strings by using
+   variants of percent encoding (RFC 3986).
+   Two major variants are supplied: one that strictly matches URL encoding,
+     and another which applies percent encoding only to non-http2 header
+     bytes (the 'compatible' variant) */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/slice.h>
+
+/* URL percent encoding spec bitfield (usabel as 'unreserved_bytes' in
+   grpc_percent_encode_slice, grpc_strict_percent_decode_slice).
+   Flags [A-Za-z0-9-_.~] as unreserved bytes for the percent encoding routines
+   */
+extern const uint8_t grpc_url_percent_encoding_unreserved_bytes[256 / 8];
+/* URL percent encoding spec bitfield (usabel as 'unreserved_bytes' in
+   grpc_percent_encode_slice, grpc_strict_percent_decode_slice).
+   Flags ascii7 non-control characters excluding '%' as unreserved bytes for the
+   percent encoding routines */
+extern const uint8_t grpc_compatible_percent_encoding_unreserved_bytes[256 / 8];
+
+/* Percent-encode a slice, returning the new slice (this cannot fail):
+   unreserved_bytes is a bitfield indicating which bytes are considered
+   unreserved and thus do not need percent encoding */
+grpc_slice grpc_percent_encode_slice(const grpc_slice& slice,
+                                     const uint8_t* unreserved_bytes);
+/* Percent-decode a slice, strictly.
+   If the input is legal (contains no unreserved bytes, and legal % encodings),
+   returns true and sets *slice_out to the decoded slice.
+   If the input is not legal, returns false and leaves *slice_out untouched.
+   unreserved_bytes is a bitfield indicating which bytes are considered
+   unreserved and thus do not need percent encoding */
+bool grpc_strict_percent_decode_slice(const grpc_slice& slice_in,
+                                      const uint8_t* unreserved_bytes,
+                                      grpc_slice* slice_out);
+/* Percent-decode a slice, permissively.
+   If a % triplet can not be decoded, pass it through verbatim.
+   This cannot fail. */
+grpc_slice grpc_permissive_percent_decode_slice(const grpc_slice& slice_in);
+
+#endif /* GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_hash_table.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_hash_table.h
new file mode 100644
index 0000000..29a5fc6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_hash_table.h	
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H
+#define GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/// Hash table implementation.
+///
+/// This implementation uses open addressing
+/// (https://en.wikipedia.org/wiki/Open_addressing) with linear
+/// probing (https://en.wikipedia.org/wiki/Linear_probing).
+///
+/// The keys are \a grpc_slice objects.  The values can be any type.
+///
+/// Hash tables are intentionally immutable, to avoid the need for locking.
+
+namespace grpc_core {
+
+template <typename T>
+class SliceHashTable : public RefCounted<SliceHashTable<T>> {
+ public:
+  struct Entry {
+    grpc_slice key;
+    T value;
+    bool is_set;
+  };
+
+  // Function for comparing values.
+  // TODO(roth): Eliminate this and the Cmp() method from this API once
+  // grpc_channel_args is redesigned to require that keys are unique.
+  typedef int (*ValueCmp)(const T&, const T&);
+
+  /// Creates a new hash table containing \a entries, which is an array
+  /// of length \a num_entries.  Takes ownership of all keys and values in \a
+  /// entries.  If not null, \a value_cmp will be used to compare values in
+  /// the context of \a Cmp(). If null, raw pointer (\a GPR_ICMP) comparison
+  /// will be used.
+  static RefCountedPtr<SliceHashTable> Create(size_t num_entries,
+                                              Entry* entries,
+                                              ValueCmp value_cmp);
+
+  // Use Create function instead of using this directly.
+  SliceHashTable(size_t num_entries, Entry* entries, ValueCmp value_cmp);
+  virtual ~SliceHashTable();
+
+  /// Returns the value from the table associated with \a key.
+  /// Returns null if \a key is not found.
+  const T* Get(const grpc_slice& key) const;
+
+  /// Compares \a a vs. \a b.
+  /// A table is considered "smaller" (resp. "greater") if:
+  ///  - GPR_ICMP(a->value_cmp, b->value_cmp) < 1 (resp. > 1),
+  ///  - else, it contains fewer (resp. more) entries,
+  ///  - else, if strcmp(a_key, b_key) < 1 (resp. > 1),
+  ///  - else, if value_cmp(a_value, b_value) < 1 (resp. > 1).
+  static int Cmp(const SliceHashTable& a, const SliceHashTable& b);
+
+ private:
+  void Add(const grpc_slice& key, T& value);
+
+  // Default value comparison function, if none specified by caller.
+  static int DefaultValueCmp(const T& a, const T& b) { return GPR_ICMP(a, b); }
+
+  const ValueCmp value_cmp_;
+  const size_t size_;
+  size_t max_num_probes_;
+  Entry* entries_;
+};
+
+//
+// implementation -- no user-serviceable parts below
+//
+
+template <typename T>
+RefCountedPtr<SliceHashTable<T>> SliceHashTable<T>::Create(size_t num_entries,
+                                                           Entry* entries,
+                                                           ValueCmp value_cmp) {
+  return MakeRefCounted<SliceHashTable<T>>(num_entries, entries, value_cmp);
+}
+
+template <typename T>
+SliceHashTable<T>::SliceHashTable(size_t num_entries, Entry* entries,
+                                  ValueCmp value_cmp)
+    : value_cmp_(value_cmp),
+      // Keep load factor low to improve performance of lookups.
+      size_(num_entries * 2),
+      max_num_probes_(0) {
+  entries_ = static_cast<Entry*>(gpr_zalloc(sizeof(Entry) * size_));
+  for (size_t i = 0; i < num_entries; ++i) {
+    Entry* entry = &entries[i];
+    Add(entry->key, entry->value);
+  }
+}
+
+template <typename T>
+SliceHashTable<T>::~SliceHashTable() {
+  for (size_t i = 0; i < size_; ++i) {
+    Entry& entry = entries_[i];
+    if (entry.is_set) {
+      grpc_slice_unref_internal(entry.key);
+      entry.value.~T();
+    }
+  }
+  gpr_free(entries_);
+}
+
+template <typename T>
+void SliceHashTable<T>::Add(const grpc_slice& key, T& value) {
+  const size_t hash = grpc_slice_hash_internal(key);
+  for (size_t offset = 0; offset < size_; ++offset) {
+    const size_t idx = (hash + offset) % size_;
+    if (!entries_[idx].is_set) {
+      entries_[idx].is_set = true;
+      entries_[idx].key = key;
+      entries_[idx].value = std::move(value);
+      // Keep track of the maximum number of probes needed, since this
+      // provides an upper bound for lookups.
+      if (offset > max_num_probes_) max_num_probes_ = offset;
+      return;
+    }
+  }
+  GPR_ASSERT(false);  // Table should never be full.
+}
+
+template <typename T>
+const T* SliceHashTable<T>::Get(const grpc_slice& key) const {
+  const size_t hash = grpc_slice_hash_internal(key);
+  // We cap the number of probes at the max number recorded when
+  // populating the table.
+  for (size_t offset = 0; offset <= max_num_probes_; ++offset) {
+    const size_t idx = (hash + offset) % size_;
+    if (!entries_[idx].is_set) break;
+    if (grpc_slice_eq(entries_[idx].key, key)) {
+      return &entries_[idx].value;
+    }
+  }
+  return nullptr;  // Not found.
+}
+
+template <typename T>
+int SliceHashTable<T>::Cmp(const SliceHashTable& a, const SliceHashTable& b) {
+  ValueCmp value_cmp_a =
+      a.value_cmp_ != nullptr ? a.value_cmp_ : DefaultValueCmp;
+  ValueCmp value_cmp_b =
+      b.value_cmp_ != nullptr ? b.value_cmp_ : DefaultValueCmp;
+  // Compare value_fns
+  const int value_fns_cmp = GPR_ICMP((void*)value_cmp_a, (void*)value_cmp_b);
+  if (value_fns_cmp != 0) return value_fns_cmp;
+  // Compare sizes
+  if (a.size_ < b.size_) return -1;
+  if (a.size_ > b.size_) return 1;
+  // Compare rows.
+  for (size_t i = 0; i < a.size_; ++i) {
+    if (!a.entries_[i].is_set) {
+      if (b.entries_[i].is_set) {
+        return -1;  // a empty but b non-empty
+      }
+      continue;  // both empty, no need to check key or value
+    } else if (!b.entries_[i].is_set) {
+      return 1;  // a non-empty but b empty
+    }
+    // neither entry is empty
+    const int key_cmp = grpc_slice_cmp(a.entries_[i].key, b.entries_[i].key);
+    if (key_cmp != 0) return key_cmp;
+    const int value_cmp = value_cmp_a(a.entries_[i].value, b.entries_[i].value);
+    if (value_cmp != 0) return value_cmp;
+  }
+  return 0;
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_internal.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_internal.h
new file mode 100644
index 0000000..e74aba9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_internal.h	
@@ -0,0 +1,350 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+#define GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <string.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+// Interned slices have specific fast-path operations for hashing. To inline
+// these operations, we need to forward declare them here.
+extern uint32_t grpc_static_metadata_hash_values[GRPC_STATIC_MDSTR_COUNT];
+
+// grpc_slice_refcount : A reference count for grpc_slice.
+//
+// Non-inlined grpc_slice objects are refcounted. Historically this was
+// implemented via grpc_slice_refcount, a C-style polymorphic class using a
+// manually managed vtable of operations. Subclasses would define their own
+// vtable; the 'virtual' methods (ref, unref, equals and hash) would simply call
+// the function pointers in the vtable as necessary.
+//
+// Unfortunately, this leads to some inefficiencies in the generated code that
+// can be improved upon. For example, equality checking for interned slices is a
+// simple equality check on the refcount pointer. With the vtable approach, this
+// would translate to roughly the following (high-level) instructions:
+//
+// grpc_slice_equals(slice1, slice2):
+//   load vtable->eq -> eq_func
+//   call eq_func(slice1, slice2)
+//
+// interned_slice_equals(slice1, slice2)
+//   load slice1.ref -> r1
+//   load slice2.ref -> r2
+//   cmp r1, r2 -> retval
+//   ret retval
+//
+// This leads to a function call for a function defined in another translation
+// unit, which imposes memory barriers, which reduces the compiler's ability to
+// optimize (in addition to the added overhead of call/ret). Additionally, it
+// may be harder to reason about branch prediction when we're jumping to
+// essentially arbitrarily provided function pointers.
+//
+// In addition, it is arguable that while virtualization was helpful for
+// Equals()/Hash() methods, that it was fundamentally unnecessary for
+// Ref()/Unref().
+//
+// Instead, grpc_slice_refcount provides the same functionality as the C-style
+// virtual class, but in a de-virtualized manner - Eq(), Hash(), Ref() and
+// Unref() are provided within this header file. Fastpaths for Eq()/Hash()
+// (interned and static metadata slices), as well as the Ref() operation, can
+// all be inlined without any memory barriers.
+//
+// It does this by:
+// 1. Using grpc_core::RefCount<> (header-only) for Ref/Unref. Two special cases
+//    need support: No-op ref/unref (eg. static metadata slices) and stream
+//    slice references (where all the slices share the streamref). This is in
+//    addition to the normal case of '1 slice, 1 ref'.
+//    To support these cases, we explicitly track a nullable pointer to the
+//    underlying RefCount<>. No-op ref/unref is used by checking the pointer for
+//    null, and doing nothing if it is. Both stream slice refs and 'normal'
+//    slices use the same path for Ref/Unref (by targeting the non-null
+//    pointer).
+//
+// 2. introducing the notion of grpc_slice_refcount::Type. This describes if a
+//    slice ref is used by a static metadata slice, an interned slice, or other
+//    slices. We switch on the slice ref type in order to provide fastpaths for
+//    Equals() and Hash().
+//
+// In total, this saves us roughly 1-2% latency for unary calls, with smaller
+// calls benefitting. The effect is present, but not as useful, for larger calls
+// where the cost of sending the data dominates.
+// TODO(arjunroy): Investigate if this can be removed with strongly typed
+// grpc_slices.
+struct grpc_slice_refcount {
+ public:
+  enum class Type {
+    STATIC,    // Refcount for a static metadata slice.
+    INTERNED,  // Refcount for an interned slice.
+    NOP,       // No-Op
+    REGULAR    // Refcount for non-static-metadata, non-interned slices.
+  };
+  typedef void (*DestroyerFn)(void*);
+
+  grpc_slice_refcount() = default;
+
+  explicit grpc_slice_refcount(Type t) : ref_type_(t) {}
+
+  explicit grpc_slice_refcount(grpc_slice_refcount* sub) : sub_refcount_(sub) {}
+  // Regular constructor for grpc_slice_refcount.
+  //
+  // Parameters:
+  //  1. grpc_slice_refcount::Type type
+  //  Whether we are the refcount for a static
+  //  metadata slice, an interned slice, or any other kind of slice.
+  //
+  //  2. RefCount* ref
+  //  The pointer to the actual underlying grpc_core::RefCount. Rather than
+  //  performing struct offset computations as in the original implementation to
+  //  get to the refcount, which requires a virtual method, we devirtualize by
+  //  using a nullable pointer to allow a single pair of Ref/Unref methods.
+  //
+  //  3. DestroyerFn destroyer_fn
+  //  Called when the refcount goes to 0, with destroyer_arg as parameter.
+  //
+  //  4. void* destroyer_arg
+  //  Argument for the virtualized destructor.
+  //
+  //  5. grpc_slice_refcount* sub
+  //  Argument used for interned slices.
+  grpc_slice_refcount(grpc_slice_refcount::Type type, grpc_core::RefCount* ref,
+                      DestroyerFn destroyer_fn, void* destroyer_arg,
+                      grpc_slice_refcount* sub)
+      : ref_(ref),
+        ref_type_(type),
+        sub_refcount_(sub),
+        dest_fn_(destroyer_fn),
+        destroy_fn_arg_(destroyer_arg) {}
+  // Initializer for static refcounts.
+  grpc_slice_refcount(grpc_slice_refcount* sub, Type type)
+      : ref_type_(type), sub_refcount_(sub) {}
+
+  Type GetType() const { return ref_type_; }
+
+  int Eq(const grpc_slice& a, const grpc_slice& b);
+
+  uint32_t Hash(const grpc_slice& slice);
+  void Ref() {
+    if (ref_ == nullptr) return;
+    ref_->RefNonZero();
+  }
+  void Unref() {
+    if (ref_ == nullptr) return;
+    if (ref_->Unref()) {
+      dest_fn_(destroy_fn_arg_);
+    }
+  }
+
+  grpc_slice_refcount* sub_refcount() const { return sub_refcount_; }
+
+ private:
+  grpc_core::RefCount* ref_ = nullptr;
+  const Type ref_type_ = Type::REGULAR;
+  grpc_slice_refcount* sub_refcount_ = this;
+  DestroyerFn dest_fn_ = nullptr;
+  void* destroy_fn_arg_ = nullptr;
+};
+
+namespace grpc_core {
+
+struct StaticSliceRefcount {
+  static grpc_slice_refcount kStaticSubRefcount;
+
+  StaticSliceRefcount(uint32_t index)
+      : base(&kStaticSubRefcount, grpc_slice_refcount::Type::STATIC),
+        index(index) {}
+
+  grpc_slice_refcount base;
+  const uint32_t index;
+};
+
+extern grpc_slice_refcount kNoopRefcount;
+
+struct InternedSliceRefcount {
+  static void Destroy(void* arg) {
+    auto* rc = static_cast<InternedSliceRefcount*>(arg);
+    rc->~InternedSliceRefcount();
+    gpr_free(rc);
+  }
+
+  InternedSliceRefcount(size_t length, uint32_t hash,
+                        InternedSliceRefcount* bucket_next)
+      : base(grpc_slice_refcount::Type::INTERNED, &refcnt, Destroy, this, &sub),
+        sub(grpc_slice_refcount::Type::REGULAR, &refcnt, Destroy, this, &sub),
+        length(length),
+        hash(hash),
+        bucket_next(bucket_next) {}
+
+  ~InternedSliceRefcount();
+
+  grpc_slice_refcount base;
+  grpc_slice_refcount sub;
+  const size_t length;
+  RefCount refcnt;
+  const uint32_t hash;
+  InternedSliceRefcount* bucket_next;
+};
+
+}  // namespace grpc_core
+
+inline size_t grpc_refcounted_slice_length(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return slice.data.refcounted.length;
+}
+
+inline const uint8_t* grpc_refcounted_slice_data(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return slice.data.refcounted.bytes;
+}
+
+inline int grpc_slice_refcount::Eq(const grpc_slice& a, const grpc_slice& b) {
+  GPR_DEBUG_ASSERT(a.refcount != nullptr);
+  GPR_DEBUG_ASSERT(a.refcount == this);
+  switch (ref_type_) {
+    case Type::STATIC:
+      GPR_DEBUG_ASSERT(
+          (GRPC_STATIC_METADATA_INDEX(a) == GRPC_STATIC_METADATA_INDEX(b)) ==
+          (a.refcount == b.refcount));
+    case Type::INTERNED:
+      return a.refcount == b.refcount;
+    case Type::NOP:
+    case Type::REGULAR:
+      break;
+  }
+  if (grpc_refcounted_slice_length(a) != GRPC_SLICE_LENGTH(b)) return false;
+  if (grpc_refcounted_slice_length(a) == 0) return true;
+  return 0 == memcmp(grpc_refcounted_slice_data(a), GRPC_SLICE_START_PTR(b),
+                     grpc_refcounted_slice_length(a));
+}
+
+inline uint32_t grpc_slice_refcount::Hash(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  GPR_DEBUG_ASSERT(slice.refcount == this);
+  switch (ref_type_) {
+    case Type::STATIC:
+      return ::grpc_static_metadata_hash_values[GRPC_STATIC_METADATA_INDEX(
+          slice)];
+    case Type::INTERNED:
+      return reinterpret_cast<grpc_core::InternedSliceRefcount*>(slice.refcount)
+          ->hash;
+    case Type::NOP:
+    case Type::REGULAR:
+      break;
+  }
+  return gpr_murmur_hash3(grpc_refcounted_slice_data(slice),
+                          grpc_refcounted_slice_length(slice),
+                          grpc_core::g_hash_seed);
+}
+
+inline const grpc_slice& grpc_slice_ref_internal(const grpc_slice& slice) {
+  if (slice.refcount) {
+    slice.refcount->Ref();
+  }
+  return slice;
+}
+
+inline void grpc_slice_unref_internal(const grpc_slice& slice) {
+  if (slice.refcount) {
+    slice.refcount->Unref();
+  }
+}
+
+void grpc_slice_buffer_reset_and_unref_internal(grpc_slice_buffer* sb);
+void grpc_slice_buffer_partial_unref_internal(grpc_slice_buffer* sb,
+                                              size_t idx);
+void grpc_slice_buffer_destroy_internal(grpc_slice_buffer* sb);
+
+// Returns a pointer to the first slice in the slice buffer without giving
+// ownership to or a reference count on that slice.
+inline grpc_slice* grpc_slice_buffer_peek_first(grpc_slice_buffer* sb) {
+  GPR_DEBUG_ASSERT(sb->count > 0);
+  return &sb->slices[0];
+}
+
+// Removes the first slice from the slice buffer.
+void grpc_slice_buffer_remove_first(grpc_slice_buffer* sb);
+
+// Calls grpc_slice_sub with the given parameters on the first slice.
+void grpc_slice_buffer_sub_first(grpc_slice_buffer* sb, size_t begin,
+                                 size_t end);
+
+/* Check if a slice is interned */
+bool grpc_slice_is_interned(const grpc_slice& slice);
+inline bool grpc_slice_is_interned(const grpc_slice& slice) {
+  return (slice.refcount &&
+          (slice.refcount->GetType() == grpc_slice_refcount::Type::INTERNED ||
+           slice.refcount->GetType() == grpc_slice_refcount::Type::STATIC));
+}
+
+inline bool grpc_slice_static_interned_equal(const grpc_slice& a,
+                                             const grpc_slice& b) {
+  GPR_DEBUG_ASSERT(grpc_slice_is_interned(a) && grpc_slice_is_interned(b));
+  return a.refcount == b.refcount;
+}
+
+void grpc_slice_intern_init(void);
+void grpc_slice_intern_shutdown(void);
+void grpc_test_only_set_slice_hash_seed(uint32_t key);
+// if slice matches a static slice, returns the static slice
+// otherwise returns the passed in slice (without reffing it)
+// used for surface boundaries where we might receive an un-interned static
+// string
+grpc_slice grpc_slice_maybe_static_intern(grpc_slice slice,
+                                          bool* returned_slice_is_different);
+uint32_t grpc_static_slice_hash(grpc_slice s);
+int grpc_static_slice_eq(grpc_slice a, grpc_slice b);
+
+inline uint32_t grpc_slice_hash_refcounted(const grpc_slice& s) {
+  GPR_DEBUG_ASSERT(s.refcount != nullptr);
+  return s.refcount->Hash(s);
+}
+
+inline uint32_t grpc_slice_default_hash_internal(const grpc_slice& s) {
+  return gpr_murmur_hash3(GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s),
+                          grpc_core::g_hash_seed);
+}
+
+inline uint32_t grpc_slice_hash_internal(const grpc_slice& s) {
+  return s.refcount == nullptr ? grpc_slice_default_hash_internal(s)
+                               : grpc_slice_hash_refcounted(s);
+}
+
+grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char> p,
+                                        size_t len);
+grpc_slice grpc_slice_from_moved_string(grpc_core::UniquePtr<char> p);
+
+// Returns the memory used by this slice, not counting the slice structure
+// itself. This means that inlined and slices from static strings will return
+// 0. All other slices will return the size of the allocated chars.
+size_t grpc_slice_memory_usage(grpc_slice s);
+
+grpc_core::UnmanagedMemorySlice grpc_slice_sub_no_ref(
+    const grpc_core::UnmanagedMemorySlice& source, size_t begin, size_t end);
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_string_helpers.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_string_helpers.h
new file mode 100644
index 0000000..6551a6d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_string_helpers.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H
+#define GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/gpr/string.h"
+
+/* Calls gpr_dump on a slice. */
+char* grpc_dump_slice(const grpc_slice& slice, uint32_t flags);
+/* Calls gpr_dump on a slice and returns the result as a slice. */
+grpc_slice grpc_dump_slice_to_slice(const grpc_slice& slice, uint32_t flags);
+
+/** Split \a str by the separator \a sep. Results are stored in \a dst, which
+ * should be a properly initialized instance. */
+void grpc_slice_split(grpc_slice str, const char* sep, grpc_slice_buffer* dst);
+
+/** Split \a str by the separator \a sep and remove the leading and trailing
+ * spaces of each resulting token. Results are stored in \a dst, which should be
+ * a properly initialized instance. */
+void grpc_slice_split_without_space(grpc_slice str, const char* sep,
+                                    grpc_slice_buffer* dst);
+
+bool grpc_parse_slice_to_uint32(grpc_slice str, uint32_t* result);
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_utils.h
new file mode 100644
index 0000000..b203a16
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_utils.h	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_UTILS_H
+#define GRPC_CORE_LIB_SLICE_SLICE_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cstring>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+
+namespace grpc_core {
+extern uint32_t g_hash_seed;
+}  // namespace grpc_core
+
+// When we compare two slices, and we know the latter is not inlined, we can
+// short circuit our comparison operator. We specifically use differs()
+// semantics instead of equals() semantics due to more favourable code
+// generation when using differs(). Specifically, we may use the output of
+// grpc_slice_differs_refcounted for control flow. If we use differs()
+// semantics, we end with a tailcall to memcmp(). If we use equals() semantics,
+// we need to invert the result that memcmp provides us, which costs several
+// instructions to do so. If we're using the result for control flow (i.e.
+// branching based on the output) then we're just performing the extra
+// operations to invert the result pointlessly. Concretely, we save 6 ops on
+// x86-64/clang with differs().
+int grpc_slice_differs_refcounted(const grpc_slice& a,
+                                  const grpc_slice& b_not_inline);
+
+// When we compare two slices, and we *know* that one of them is static or
+// interned, we can short circuit our slice equality function. The second slice
+// here must be static or interned; slice a can be any slice, inlined or not.
+inline bool grpc_slice_eq_static_interned(const grpc_slice& a,
+                                          const grpc_slice& b_static_interned) {
+  if (a.refcount == b_static_interned.refcount) {
+    return true;
+  }
+  return !grpc_slice_differs_refcounted(a, b_static_interned);
+}
+
+// TODO(arjunroy): These type declarations ought to be in
+// src/core/lib/slice/slice_internal.h instead; they are here due to a circular
+// header depedency between slice_internal.h and
+// src/core/lib/transport/metadata.h. We need to fix this circular reference and
+// when we do, move these type declarations.
+//
+// Internal slice type declarations.
+// Externally, a grpc_slice is a grpc_slice is a grpc_slice.
+// Internally, we may have heap allocated slices, static slices, interned
+// slices, and inlined slices. If we know the specific type of slice
+// we're dealing with, we can save cycles (e.g. fast-paths when we know we don't
+// need to take a reference on a slice). Rather than introducing new methods
+// ad-hoc in these cases, we rely on type-system backed overloads to keep
+// internal APIs clean.
+//
+// For each overload, the definition and layout of the underlying slice does not
+// change; this is purely type-system information.
+namespace grpc_core {
+
+// There are two main types of slices: those that have their memory
+// managed by the slice library and those that do not.
+//
+// The following types of slices are not managed:
+// - inlined slices (i.e., refcount is null)
+// - slices that have a custom refcount type (i.e., not STATIC or INTERNED)
+// - slices where the memory is managed by some external agent. The slice is not
+//   ref-counted by grpc, and the programmer is responsible for ensuring the
+//   data is valid for the duration of the period that grpc may access it.
+//
+// The following types of slices are managed:
+// - static metadata slices (i.e., refcount type is STATIC)
+// - interned slices (i.e., refcount type is INTERNED)
+//
+// This categorization is reflected in the following hierarchy:
+//
+// - grpc_slice
+// > - UnmanagedMemorySlice
+//   > - ExternallyManagedSlice
+//   - ManagedMemorySlice
+//   > - InternedSlice
+//     - StaticMetadataSlice
+//
+struct ManagedMemorySlice : public grpc_slice {
+  ManagedMemorySlice() {
+    refcount = nullptr;
+    data.refcounted.bytes = nullptr;
+    data.refcounted.length = 0;
+  }
+  explicit ManagedMemorySlice(const char* string);
+  ManagedMemorySlice(const char* buf, size_t len);
+  explicit ManagedMemorySlice(const grpc_slice* slice);
+  bool operator==(const grpc_slice& other) const {
+    if (refcount == other.refcount) {
+      return true;
+    }
+    return !grpc_slice_differs_refcounted(other, *this);
+  }
+  bool operator!=(const grpc_slice& other) const { return !(*this == other); }
+  bool operator==(std::pair<const char*, size_t> buflen) const {
+    return data.refcounted.length == buflen.second && buflen.first != nullptr &&
+           memcmp(buflen.first, data.refcounted.bytes, buflen.second) == 0;
+  }
+};
+struct UnmanagedMemorySlice : public grpc_slice {
+  // TODO(arjunroy): Can we use a default=false param instead of this enum?
+  enum class ForceHeapAllocation {};
+  UnmanagedMemorySlice() {
+    refcount = nullptr;
+    data.inlined.length = 0;
+  }
+  explicit UnmanagedMemorySlice(const char* source);
+  UnmanagedMemorySlice(const char* source, size_t length);
+  // The first constructor creates a slice that may be heap allocated, or
+  // inlined in the slice structure if length is small enough
+  // (< GRPC_SLICE_INLINED_SIZE). The second constructor forces heap alloc.
+  explicit UnmanagedMemorySlice(size_t length);
+  explicit UnmanagedMemorySlice(size_t length, const ForceHeapAllocation&) {
+    HeapInit(length);
+  }
+
+ private:
+  void HeapInit(size_t length);
+};
+
+extern grpc_slice_refcount kNoopRefcount;
+
+struct ExternallyManagedSlice : public UnmanagedMemorySlice {
+  ExternallyManagedSlice()
+      : ExternallyManagedSlice(&kNoopRefcount, 0, nullptr) {}
+  explicit ExternallyManagedSlice(const char* s)
+      : ExternallyManagedSlice(s, strlen(s)) {}
+  ExternallyManagedSlice(const void* s, size_t len)
+      : ExternallyManagedSlice(
+            &kNoopRefcount, len,
+            reinterpret_cast<uint8_t*>(const_cast<void*>(s))) {}
+  ExternallyManagedSlice(grpc_slice_refcount* ref, size_t length,
+                         uint8_t* bytes) {
+    refcount = ref;
+    data.refcounted.length = length;
+    data.refcounted.bytes = bytes;
+  }
+  bool operator==(const grpc_slice& other) const {
+    return data.refcounted.length == GRPC_SLICE_LENGTH(other) &&
+           memcmp(data.refcounted.bytes, GRPC_SLICE_START_PTR(other),
+                  data.refcounted.length) == 0;
+  }
+  bool operator!=(const grpc_slice& other) const { return !(*this == other); }
+  uint32_t Hash() {
+    return gpr_murmur_hash3(data.refcounted.bytes, data.refcounted.length,
+                            g_hash_seed);
+  }
+};
+
+struct StaticMetadataSlice : public ManagedMemorySlice {
+  StaticMetadataSlice(grpc_slice_refcount* ref, size_t length,
+                      const uint8_t* bytes) {
+    refcount = ref;
+    data.refcounted.length = length;
+    // NB: grpc_slice may or may not point to a static slice, but we are
+    // definitely pointing to static data here. Since we are not changing
+    // the underlying C-type, we need a const_cast here.
+    data.refcounted.bytes = const_cast<uint8_t*>(bytes);
+  }
+};
+
+struct InternedSliceRefcount;
+struct InternedSlice : public ManagedMemorySlice {
+  explicit InternedSlice(InternedSliceRefcount* s);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_weak_hash_table.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_weak_hash_table.h
new file mode 100644
index 0000000..931e405
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/slice/slice_weak_hash_table.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H
+#define GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/// Weak hash table implementation.
+///
+/// This entries in this table are weak: an entry may be removed at any time due
+/// to a number of reasons: memory pressure, hash collisions, etc.
+///
+/// The keys are \a grpc_slice objects. The values are of arbitrary type.
+///
+/// This class is thread unsafe. It's the caller's responsibility to ensure
+/// proper locking when accessing its methods.
+
+namespace grpc_core {
+
+template <typename T, size_t Size>
+class SliceWeakHashTable : public RefCounted<SliceWeakHashTable<T, Size>> {
+ public:
+  /// Creates a new table of at most \a size entries.
+  static RefCountedPtr<SliceWeakHashTable> Create() {
+    return MakeRefCounted<SliceWeakHashTable<T, Size>>();
+  }
+
+  /// Use Create function instead of using this directly.
+  SliceWeakHashTable() = default;
+  ~SliceWeakHashTable() = default;
+
+  /// Add a mapping from \a key to \a value, taking ownership of \a key. This
+  /// operation will always succeed. It may discard older entries.
+  void Add(const grpc_slice& key, T value) {
+    const size_t idx = grpc_slice_hash_internal(key) % Size;
+    entries_[idx].Set(key, std::move(value));
+    return;
+  }
+
+  /// Returns the value from the table associated with / \a key or null if not
+  /// found.
+  const T* Get(const grpc_slice& key) const {
+    const size_t idx = grpc_slice_hash_internal(key) % Size;
+    const auto& entry = entries_[idx];
+    return grpc_slice_eq(entry.key(), key) ? entry.value() : nullptr;
+  }
+
+ private:
+  /// The type of the table "rows".
+  class Entry {
+   public:
+    Entry() = default;
+    ~Entry() {
+      if (is_set_) grpc_slice_unref_internal(key_);
+    }
+    const grpc_slice& key() const { return key_; }
+
+    /// Return the entry's value, or null if unset.
+    const T* value() const {
+      if (!is_set_) return nullptr;
+      return &value_;
+    }
+
+    /// Set the \a key and \a value (which is moved) for the entry.
+    void Set(const grpc_slice& key, T&& value) {
+      if (is_set_) grpc_slice_unref_internal(key_);
+      key_ = key;
+      value_ = std::move(value);
+      is_set_ = true;
+    }
+
+   private:
+    grpc_slice key_;
+    T value_;
+    bool is_set_ = false;
+  };
+
+  Entry entries_[Size];
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/api_trace.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/api_trace.h
new file mode 100644
index 0000000..51d1f52
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/api_trace.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_API_TRACE_H
+#define GRPC_CORE_LIB_SURFACE_API_TRACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/debug/trace.h"
+
+extern grpc_core::TraceFlag grpc_api_trace;
+
+/* Provide unwrapping macros because we're in C89 and variadic macros weren't
+   introduced until C99... */
+#define GRPC_API_TRACE_UNWRAP0()
+#define GRPC_API_TRACE_UNWRAP1(a) , a
+#define GRPC_API_TRACE_UNWRAP2(a, b) , a, b
+#define GRPC_API_TRACE_UNWRAP3(a, b, c) , a, b, c
+#define GRPC_API_TRACE_UNWRAP4(a, b, c, d) , a, b, c, d
+#define GRPC_API_TRACE_UNWRAP5(a, b, c, d, e) , a, b, c, d, e
+#define GRPC_API_TRACE_UNWRAP6(a, b, c, d, e, f) , a, b, c, d, e, f
+#define GRPC_API_TRACE_UNWRAP7(a, b, c, d, e, f, g) , a, b, c, d, e, f, g
+#define GRPC_API_TRACE_UNWRAP8(a, b, c, d, e, f, g, h) , a, b, c, d, e, f, g, h
+#define GRPC_API_TRACE_UNWRAP9(a, b, c, d, e, f, g, h, i) \
+  , a, b, c, d, e, f, g, h, i
+#define GRPC_API_TRACE_UNWRAP10(a, b, c, d, e, f, g, h, i, j) \
+  , a, b, c, d, e, f, g, h, i, j
+
+/* Due to the limitations of C89's preprocessor, the arity of the var-arg list
+   'nargs' must be specified. */
+#define GRPC_API_TRACE(fmt, nargs, args)                      \
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) {              \
+    gpr_log(GPR_INFO, fmt GRPC_API_TRACE_UNWRAP##nargs args); \
+  }
+
+#endif /* GRPC_CORE_LIB_SURFACE_API_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call.h
new file mode 100644
index 0000000..a33664a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call.h	
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_H
+#define GRPC_CORE_LIB_SURFACE_CALL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/compression_types.h>
+
+typedef void (*grpc_ioreq_completion_func)(grpc_call* call, int success,
+                                           void* user_data);
+
+typedef struct grpc_call_create_args {
+  grpc_channel* channel;
+  grpc_server* server;
+
+  grpc_call* parent;
+  uint32_t propagation_mask;
+
+  grpc_completion_queue* cq;
+  /* if not NULL, it'll be used in lieu of cq */
+  grpc_pollset_set* pollset_set_alternative;
+
+  const void* server_transport_data;
+
+  grpc_mdelem* add_initial_metadata;
+  size_t add_initial_metadata_count;
+
+  grpc_millis send_deadline;
+} grpc_call_create_args;
+
+/* Create a new call based on \a args.
+   Regardless of success or failure, always returns a valid new call into *call
+   */
+grpc_error* grpc_call_create(const grpc_call_create_args* args,
+                             grpc_call** call);
+
+void grpc_call_set_completion_queue(grpc_call* call, grpc_completion_queue* cq);
+
+#ifndef NDEBUG
+void grpc_call_internal_ref(grpc_call* call, const char* reason);
+void grpc_call_internal_unref(grpc_call* call, const char* reason);
+#define GRPC_CALL_INTERNAL_REF(call, reason) \
+  grpc_call_internal_ref(call, reason)
+#define GRPC_CALL_INTERNAL_UNREF(call, reason) \
+  grpc_call_internal_unref(call, reason)
+#else
+void grpc_call_internal_ref(grpc_call* call);
+void grpc_call_internal_unref(grpc_call* call);
+#define GRPC_CALL_INTERNAL_REF(call, reason) grpc_call_internal_ref(call)
+#define GRPC_CALL_INTERNAL_UNREF(call, reason) grpc_call_internal_unref(call)
+#endif
+
+grpc_core::Arena* grpc_call_get_arena(grpc_call* call);
+
+grpc_call_stack* grpc_call_get_call_stack(grpc_call* call);
+
+grpc_call_error grpc_call_start_batch_and_execute(grpc_call* call,
+                                                  const grpc_op* ops,
+                                                  size_t nops,
+                                                  grpc_closure* closure);
+
+/* gRPC core internal version of grpc_call_cancel that does not create
+ * exec_ctx. */
+void grpc_call_cancel_internal(grpc_call* call);
+
+/* Given the top call_element, get the call object. */
+grpc_call* grpc_call_from_top_element(grpc_call_element* surface_element);
+
+void grpc_call_log_batch(const char* file, int line, gpr_log_severity severity,
+                         const grpc_op* ops, size_t nops);
+
+/* Set a context pointer.
+   No thread safety guarantees are made wrt this value. */
+/* TODO(#9731): add exec_ctx to destroy */
+void grpc_call_context_set(grpc_call* call, grpc_context_index elem,
+                           void* value, void (*destroy)(void* value));
+/* Get a context pointer. */
+void* grpc_call_context_get(grpc_call* call, grpc_context_index elem);
+
+#define GRPC_CALL_LOG_BATCH(sev, ops, nops)        \
+  do {                                             \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) { \
+      grpc_call_log_batch(sev, ops, nops);         \
+    }                                              \
+  } while (0)
+
+uint8_t grpc_call_is_client(grpc_call* call);
+
+/* Get the estimated memory size for a call BESIDES the call stack. Combined
+ * with the size of the call stack, it helps estimate the arena size for the
+ * initial call. */
+size_t grpc_call_get_initial_size_estimate();
+
+/* Return an appropriate compression algorithm for the requested compression \a
+ * level in the context of \a call. */
+grpc_compression_algorithm grpc_call_compression_for_level(
+    grpc_call* call, grpc_compression_level level);
+
+extern grpc_core::TraceFlag grpc_call_error_trace;
+extern grpc_core::TraceFlag grpc_compression_trace;
+
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call_test_only.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call_test_only.h
new file mode 100644
index 0000000..dbd1a86
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/call_test_only.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
+#define GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+/** Return the message compression algorithm from \a call.
+ *
+ * \warning This function should \b only be used in test code. */
+grpc_compression_algorithm grpc_call_test_only_get_compression_algorithm(
+    grpc_call* call);
+
+/** Return the message flags from \a call.
+ *
+ * \warning This function should \b only be used in test code. */
+uint32_t grpc_call_test_only_get_message_flags(grpc_call* call);
+
+/** Returns a bitset for the encodings (compression algorithms) supported by \a
+ * call's peer.
+ *
+ * To be indexed by grpc_compression_algorithm enum values. */
+uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call* call);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel.h
new file mode 100644
index 0000000..280fc96
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+
+grpc_channel* grpc_channel_create(const char* target,
+                                  const grpc_channel_args* args,
+                                  grpc_channel_stack_type channel_stack_type,
+                                  grpc_transport* optional_transport,
+                                  grpc_resource_user* resource_user = nullptr);
+
+/** The same as grpc_channel_destroy, but doesn't create an ExecCtx, and so
+ * is safe to use from within core. */
+void grpc_channel_destroy_internal(grpc_channel* channel);
+
+grpc_channel* grpc_channel_create_with_builder(
+    grpc_channel_stack_builder* builder,
+    grpc_channel_stack_type channel_stack_type);
+
+/** Create a call given a grpc_channel, in order to call \a method.
+    Progress is tied to activity on \a pollset_set. The returned call object is
+    meant to be used with \a grpc_call_start_batch_and_execute, which relies on
+    callbacks to signal completions. \a method and \a host need
+    only live through the invocation of this function. If \a parent_call is
+    non-NULL, it must be a server-side call. It will be used to propagate
+    properties from the server call to this new client call, depending on the
+    value of \a propagation_mask (see propagation_bits.h for possible values) */
+grpc_call* grpc_channel_create_pollset_set_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_pollset_set* pollset_set, const grpc_slice& method,
+    const grpc_slice* host, grpc_millis deadline, void* reserved);
+
+/** Get a (borrowed) pointer to this channels underlying channel stack */
+grpc_channel_stack* grpc_channel_get_channel_stack(grpc_channel* channel);
+
+grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+    grpc_channel* channel);
+
+size_t grpc_channel_get_call_size_estimate(grpc_channel* channel);
+void grpc_channel_update_call_size_estimate(grpc_channel* channel, size_t size);
+
+struct registered_call;
+struct grpc_channel {
+  int is_client;
+  grpc_compression_options compression_options;
+
+  gpr_atm call_size_estimate;
+  grpc_resource_user* resource_user;
+
+  gpr_mu registered_call_mu;
+  registered_call* registered_calls;
+
+  grpc_core::RefCountedPtr<grpc_core::channelz::ChannelNode> channelz_node;
+
+  char* target;
+};
+#define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack*)((c) + 1))
+
+inline grpc_compression_options grpc_channel_compression_options(
+    const grpc_channel* channel) {
+  return channel->compression_options;
+}
+
+inline grpc_channel_stack* grpc_channel_get_channel_stack(
+    grpc_channel* channel) {
+  return CHANNEL_STACK_FROM_CHANNEL(channel);
+}
+
+inline grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+    grpc_channel* channel) {
+  return channel->channelz_node.get();
+}
+
+#ifndef NDEBUG
+inline void grpc_channel_internal_ref(grpc_channel* channel,
+                                      const char* reason) {
+  GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel,
+                                        const char* reason) {
+  GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+  grpc_channel_internal_ref(channel, reason)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+  grpc_channel_internal_unref(channel, reason)
+#else
+inline void grpc_channel_internal_ref(grpc_channel* channel) {
+  GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel) {
+  GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+  grpc_channel_internal_ref(channel)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+  grpc_channel_internal_unref(channel)
+#endif
+
+/** Return the channel's compression options. */
+grpc_compression_options grpc_channel_compression_options(
+    const grpc_channel* channel);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_init.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_init.h
new file mode 100644
index 0000000..d17a721
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_init.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/transport/transport.h"
+
+#define GRPC_CHANNEL_INIT_BUILTIN_PRIORITY 10000
+
+/// This module provides a way for plugins (and the grpc core library itself)
+/// to register mutators for channel stacks.
+/// It also provides a universal entry path to run those mutators to build
+/// a channel stack for various subsystems.
+
+/// One stage of mutation: call functions against \a builder to influence the
+/// finally constructed channel stack
+typedef bool (*grpc_channel_init_stage)(grpc_channel_stack_builder* builder,
+                                        void* arg);
+
+/// Global initialization of the system
+void grpc_channel_init_init(void);
+
+/// Register one stage of mutators.
+/// Stages are run in priority order (lowest to highest), and then in
+/// registration order (in the case of a tie).
+/// Stages are registered against one of the pre-determined channel stack
+/// types.
+/// If the channel stack type is GRPC_CLIENT_SUBCHANNEL, the caller should
+/// ensure that subchannels with different filter lists will always have
+/// different channel args. This requires setting a channel arg in case the
+/// registration function relies on some condition other than channel args to
+/// decide whether to add a filter or not.
+void grpc_channel_init_register_stage(grpc_channel_stack_type type,
+                                      int priority,
+                                      grpc_channel_init_stage stage_fn,
+                                      void* stage_arg);
+
+/// Finalize registration. No more calls to grpc_channel_init_register_stage are
+/// allowed.
+void grpc_channel_init_finalize(void);
+/// Shutdown the channel init system
+void grpc_channel_init_shutdown(void);
+
+/// Construct a channel stack of some sort: see channel_stack.h for details
+/// \a type is the type of channel stack to create
+/// \a prefix_bytes is the number of bytes before the channel stack to allocate
+/// \a args are configuration arguments for the channel stack
+/// \a initial_refs is the initial refcount to give the channel stack
+/// \a destroy and \a destroy_arg specify how to destroy the channel stack
+///    if destroy_arg is NULL, the returned value from this function will be
+///    substituted
+/// \a optional_transport is either NULL or a constructed transport object
+/// Returns a pointer to the base of the memory allocated (the actual channel
+/// stack object will be prefix_bytes past that pointer)
+bool grpc_channel_init_create_stack(grpc_channel_stack_builder* builder,
+                                    grpc_channel_stack_type type);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_stack_type.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_stack_type.h
new file mode 100644
index 0000000..8a3c08e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/channel_stack_type.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+typedef enum {
+  // normal top-half client channel with load-balancing, connection management
+  GRPC_CLIENT_CHANNEL,
+  // bottom-half of a client channel: everything that happens post-load
+  // balancing (bound to a specific transport)
+  GRPC_CLIENT_SUBCHANNEL,
+  // a permanently broken client channel
+  GRPC_CLIENT_LAME_CHANNEL,
+  // a directly connected client channel (without load-balancing, directly talks
+  // to a transport)
+  GRPC_CLIENT_DIRECT_CHANNEL,
+  // server side channel
+  GRPC_SERVER_CHANNEL,
+  // must be last
+  GRPC_NUM_CHANNEL_STACK_TYPES
+} grpc_channel_stack_type;
+
+bool grpc_channel_stack_type_is_client(grpc_channel_stack_type type);
+
+const char* grpc_channel_stack_type_string(grpc_channel_stack_type type);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue.h
new file mode 100644
index 0000000..4a114be
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue.h	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+
+/* Internal API for completion queues */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/pollset.h"
+
+/* These trace flags default to 1. The corresponding lines are only traced
+   if grpc_api_trace is also truthy */
+extern grpc_core::TraceFlag grpc_cq_pluck_trace;
+extern grpc_core::TraceFlag grpc_trace_operation_failures;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_pending_tags;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_cq_refcount;
+
+typedef struct grpc_cq_completion {
+  grpc_core::ManualConstructor<grpc_core::MultiProducerSingleConsumerQueue>
+      node;
+
+  /** user supplied tag */
+  void* tag;
+  /** done callback - called when this queue element is no longer
+      needed by the completion queue */
+  void (*done)(void* done_arg, struct grpc_cq_completion* c);
+  void* done_arg;
+  /** next pointer; low bit is used to indicate success or not */
+  uintptr_t next;
+} grpc_cq_completion;
+
+#ifndef NDEBUG
+void grpc_cq_internal_ref(grpc_completion_queue* cc, const char* reason,
+                          const char* file, int line);
+void grpc_cq_internal_unref(grpc_completion_queue* cc, const char* reason,
+                            const char* file, int line);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) \
+  grpc_cq_internal_ref(cc, reason, __FILE__, __LINE__)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) \
+  grpc_cq_internal_unref(cc, reason, __FILE__, __LINE__)
+#else
+void grpc_cq_internal_ref(grpc_completion_queue* cc);
+void grpc_cq_internal_unref(grpc_completion_queue* cc);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc)
+#endif
+
+/* Initializes global variables used by completion queues */
+void grpc_cq_global_init();
+
+/* Flag that an operation is beginning: the completion channel will not finish
+   shutdown until a corrensponding grpc_cq_end_* call is made.
+   \a tag is currently used only in debug builds. Return true on success, and
+   false if completion_queue has been shutdown. */
+bool grpc_cq_begin_op(grpc_completion_queue* cc, void* tag);
+
+/* Queue a GRPC_OP_COMPLETED operation; tag must correspond to the tag passed to
+   grpc_cq_begin_op */
+void grpc_cq_end_op(grpc_completion_queue* cc, void* tag, grpc_error* error,
+                    void (*done)(void* done_arg, grpc_cq_completion* storage),
+                    void* done_arg, grpc_cq_completion* storage,
+                    bool internal = false);
+
+grpc_pollset* grpc_cq_pollset(grpc_completion_queue* cc);
+
+bool grpc_cq_can_listen(grpc_completion_queue* cc);
+
+grpc_cq_completion_type grpc_get_cq_completion_type(grpc_completion_queue* cc);
+
+int grpc_get_cq_poll_num(grpc_completion_queue* cc);
+
+grpc_completion_queue* grpc_completion_queue_create_internal(
+    grpc_cq_completion_type completion_type, grpc_cq_polling_type polling_type,
+    grpc_experimental_completion_queue_functor* shutdown_callback);
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue_factory.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue_factory.h
new file mode 100644
index 0000000..d2b30a9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/completion_queue_factory.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/surface/completion_queue.h"
+
+typedef struct grpc_completion_queue_factory_vtable {
+  grpc_completion_queue* (*create)(const grpc_completion_queue_factory*,
+                                   const grpc_completion_queue_attributes*);
+} grpc_completion_queue_factory_vtable;
+
+struct grpc_completion_queue_factory {
+  const char* name;
+  void* data; /* Factory specific data */
+  grpc_completion_queue_factory_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/event_string.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/event_string.h
new file mode 100644
index 0000000..e609570
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/event_string.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
+#define GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+/* Returns a string describing an event. Must be later freed with gpr_free() */
+char* grpc_event_string(grpc_event* ev);
+
+#endif /* GRPC_CORE_LIB_SURFACE_EVENT_STRING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/init.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/init.h
new file mode 100644
index 0000000..6eaa488
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/init.h	
@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_INIT_H
+#define GRPC_CORE_LIB_SURFACE_INIT_H
+
+void grpc_register_security_filters(void);
+void grpc_security_pre_init(void);
+void grpc_security_init(void);
+void grpc_maybe_wait_for_async_shutdown(void);
+
+#endif /* GRPC_CORE_LIB_SURFACE_INIT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/lame_client.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/lame_client.h
new file mode 100644
index 0000000..aefa67c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/lame_client.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
+#define GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_lame_filter;
+
+#endif /* GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/server.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/server.h
new file mode 100644
index 0000000..2285821
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/server.h	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_SERVER_H
+#define GRPC_CORE_LIB_SURFACE_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/transport/transport.h"
+
+extern const grpc_channel_filter grpc_server_top_filter;
+
+/** Lightweight tracing of server channel state */
+extern grpc_core::TraceFlag grpc_server_channel_trace;
+
+/* Add a listener to the server: when the server starts, it will call start,
+   and when it shuts down, it will call destroy */
+void grpc_server_add_listener(
+    grpc_server* server, void* listener_arg,
+    void (*start)(grpc_server* server, void* arg, grpc_pollset** pollsets,
+                  size_t npollsets),
+    void (*destroy)(grpc_server* server, void* arg, grpc_closure* on_done),
+    grpc_core::RefCountedPtr<grpc_core::channelz::ListenSocketNode> node);
+
+/* Setup a transport - creates a channel stack, binds the transport to the
+   server */
+void grpc_server_setup_transport(
+    grpc_server* server, grpc_transport* transport,
+    grpc_pollset* accepting_pollset, const grpc_channel_args* args,
+    const grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>&
+        socket_node,
+    grpc_resource_user* resource_user = nullptr);
+
+grpc_core::channelz::ServerNode* grpc_server_get_channelz_node(
+    grpc_server* server);
+
+const grpc_channel_args* grpc_server_get_channel_args(grpc_server* server);
+
+grpc_resource_user* grpc_server_get_default_resource_user(grpc_server* server);
+
+int grpc_server_has_open_connections(grpc_server* server);
+
+/* Do not call this before grpc_server_start. Returns the pollsets and the
+ * number of pollsets via 'pollsets' and 'pollset_count'. */
+void grpc_server_get_pollsets(grpc_server* server, grpc_pollset*** pollsets,
+                              size_t* pollset_count);
+
+#endif /* GRPC_CORE_LIB_SURFACE_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/validate_metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/validate_metadata.h
new file mode 100644
index 0000000..db3be68
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/surface/validate_metadata.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H
+#define GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/iomgr/error.h"
+
+grpc_error* grpc_validate_header_key_is_legal(const grpc_slice& slice);
+grpc_error* grpc_validate_header_nonbin_value_is_legal(const grpc_slice& slice);
+
+int grpc_is_binary_header_internal(const grpc_slice& slice);
+inline int grpc_key_is_binary_header(const uint8_t* buf, size_t length) {
+  if (length < 5) return 0;
+  return 0 == memcmp(buf + length - 4, "-bin", 4);
+}
+inline int grpc_is_refcounted_slice_binary_header(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return grpc_key_is_binary_header(slice.data.refcounted.bytes,
+                                   slice.data.refcounted.length);
+}
+
+#endif /* GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/bdp_estimator.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/bdp_estimator.h
new file mode 100644
index 0000000..6dc4d6b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/bdp_estimator.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H
+#define GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::TraceFlag grpc_bdp_estimator_trace;
+
+namespace grpc_core {
+
+class BdpEstimator {
+ public:
+  explicit BdpEstimator(const char* name);
+  ~BdpEstimator() {}
+
+  int64_t EstimateBdp() const { return estimate_; }
+  double EstimateBandwidth() const { return bw_est_; }
+
+  void AddIncomingBytes(int64_t num_bytes) { accumulator_ += num_bytes; }
+
+  // Schedule a ping: call in response to receiving a true from
+  // grpc_bdp_estimator_add_incoming_bytes once a ping has been scheduled by a
+  // transport (but not necessarily started)
+  void SchedulePing() {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]:sched acc=%" PRId64 " est=%" PRId64, name_,
+              accumulator_, estimate_);
+    }
+    GPR_ASSERT(ping_state_ == PingState::UNSCHEDULED);
+    ping_state_ = PingState::SCHEDULED;
+    accumulator_ = 0;
+  }
+
+  // Start a ping: call after calling grpc_bdp_estimator_schedule_ping and
+  // once
+  // the ping is on the wire
+  void StartPing() {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]:start acc=%" PRId64 " est=%" PRId64, name_,
+              accumulator_, estimate_);
+    }
+    GPR_ASSERT(ping_state_ == PingState::SCHEDULED);
+    ping_state_ = PingState::STARTED;
+    accumulator_ = 0;
+    ping_start_time_ = gpr_now(GPR_CLOCK_MONOTONIC);
+  }
+
+  // Completes a previously started ping, returns when to schedule the next one
+  grpc_millis CompletePing();
+
+ private:
+  enum class PingState { UNSCHEDULED, SCHEDULED, STARTED };
+
+  PingState ping_state_;
+  int64_t accumulator_;
+  int64_t estimate_;
+  // when was the current ping started?
+  gpr_timespec ping_start_time_;
+  int inter_ping_delay_;
+  int stable_estimate_count_;
+  double bw_est_;
+  const char* name_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/byte_stream.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/byte_stream.h
new file mode 100644
index 0000000..6988ab8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/byte_stream.h	
@@ -0,0 +1,160 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
+#define GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/closure.h"
+
+/** Internal bit flag for grpc_begin_message's \a flags signaling the use of
+ * compression for the message */
+#define GRPC_WRITE_INTERNAL_COMPRESS (0x80000000u)
+/** Mask of all valid internal flags. */
+#define GRPC_WRITE_INTERNAL_USED_MASK (GRPC_WRITE_INTERNAL_COMPRESS)
+
+namespace grpc_core {
+
+class ByteStream : public Orphanable {
+ public:
+  virtual ~ByteStream() {}
+
+  // Returns true if the bytes are available immediately (in which case
+  // on_complete will not be called), or false if the bytes will be available
+  // asynchronously (in which case on_complete will be called when they
+  // are available). Should not be called if there is no data left on the
+  // stream.
+  //
+  // max_size_hint can be set as a hint as to the maximum number
+  // of bytes that would be acceptable to read.
+  virtual bool Next(size_t max_size_hint, grpc_closure* on_complete) = 0;
+
+  // Returns the next slice in the byte stream when it is available, as
+  // indicated by Next().
+  //
+  // Once a slice is returned into *slice, it is owned by the caller.
+  virtual grpc_error* Pull(grpc_slice* slice) = 0;
+
+  // Shuts down the byte stream.
+  //
+  // If there is a pending call to on_complete from Next(), it will be
+  // invoked with the error passed to Shutdown().
+  //
+  // The next call to Pull() (if any) will return the error passed to
+  // Shutdown().
+  virtual void Shutdown(grpc_error* error) = 0;
+
+  uint32_t length() const { return length_; }
+  uint32_t flags() const { return flags_; }
+
+  void set_flags(uint32_t flags) { flags_ = flags; }
+
+ protected:
+  ByteStream(uint32_t length, uint32_t flags)
+      : length_(length), flags_(flags) {}
+
+ private:
+  const uint32_t length_;
+  uint32_t flags_;
+};
+
+//
+// SliceBufferByteStream
+//
+// A ByteStream that wraps a slice buffer.
+//
+
+class SliceBufferByteStream : public ByteStream {
+ public:
+  // Removes all slices in slice_buffer, leaving it empty.
+  SliceBufferByteStream(grpc_slice_buffer* slice_buffer, uint32_t flags);
+
+  ~SliceBufferByteStream();
+
+  void Orphan() override;
+
+  bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+  grpc_error* Pull(grpc_slice* slice) override;
+  void Shutdown(grpc_error* error) override;
+
+ private:
+  grpc_error* shutdown_error_ = GRPC_ERROR_NONE;
+  grpc_slice_buffer backing_buffer_;
+};
+
+//
+// CachingByteStream
+//
+// A ByteStream that that wraps an underlying byte stream but caches
+// the resulting slices in a slice buffer.  If an initial attempt fails
+// without fully draining the underlying stream, a new caching stream
+// can be created from the same underlying cache, in which case it will
+// return whatever is in the backing buffer before continuing to read the
+// underlying stream.
+//
+// NOTE: No synchronization is done, so it is not safe to have multiple
+// CachingByteStreams simultaneously drawing from the same underlying
+// ByteStreamCache at the same time.
+//
+
+class ByteStreamCache {
+ public:
+  class CachingByteStream : public ByteStream {
+   public:
+    explicit CachingByteStream(ByteStreamCache* cache);
+
+    ~CachingByteStream();
+
+    void Orphan() override;
+
+    bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+    grpc_error* Pull(grpc_slice* slice) override;
+    void Shutdown(grpc_error* error) override;
+
+    // Resets the byte stream to the start of the underlying stream.
+    void Reset();
+
+   private:
+    ByteStreamCache* cache_;
+    size_t cursor_ = 0;
+    size_t offset_ = 0;
+    grpc_error* shutdown_error_ = GRPC_ERROR_NONE;
+  };
+
+  explicit ByteStreamCache(OrphanablePtr<ByteStream> underlying_stream);
+
+  ~ByteStreamCache();
+
+  // Must not be destroyed while still in use by a CachingByteStream.
+  void Destroy();
+
+  grpc_slice_buffer* cache_buffer() { return &cache_buffer_; }
+
+ private:
+  OrphanablePtr<ByteStream> underlying_stream_;
+  uint32_t length_;
+  uint32_t flags_;
+  grpc_slice_buffer cache_buffer_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/connectivity_state.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/connectivity_state.h
new file mode 100644
index 0000000..b2add5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/connectivity_state.h	
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
+#define GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+extern TraceFlag grpc_connectivity_state_trace;
+
+// Enum to string conversion.
+const char* ConnectivityStateName(grpc_connectivity_state state);
+
+// Interface for watching connectivity state.
+// Subclasses must implement the Notify() method.
+//
+// Note: Most callers will want to use
+// AsyncConnectivityStateWatcherInterface instead.
+class ConnectivityStateWatcherInterface
+    : public InternallyRefCounted<ConnectivityStateWatcherInterface> {
+ public:
+  virtual ~ConnectivityStateWatcherInterface() = default;
+
+  // Notifies the watcher that the state has changed to new_state.
+  virtual void Notify(grpc_connectivity_state new_state) = 0;
+
+  void Orphan() override { Unref(); }
+};
+
+// An alternative watcher interface that performs notifications via an
+// asynchronous callback scheduled on the ExecCtx.
+// Subclasses must implement the OnConnectivityStateChange() method.
+class AsyncConnectivityStateWatcherInterface
+    : public ConnectivityStateWatcherInterface {
+ public:
+  virtual ~AsyncConnectivityStateWatcherInterface() = default;
+
+  // Schedules a closure on the ExecCtx to invoke
+  // OnConnectivityStateChange() asynchronously.
+  void Notify(grpc_connectivity_state new_state) override final;
+
+ protected:
+  class Notifier;
+
+  // If \a combiner is nullptr, then the notification will be scheduled on the
+  // ExecCtx.
+  explicit AsyncConnectivityStateWatcherInterface(Combiner* combiner = nullptr)
+      : combiner_(combiner) {}
+
+  // Invoked asynchronously when Notify() is called.
+  virtual void OnConnectivityStateChange(grpc_connectivity_state new_state) = 0;
+
+ private:
+  Combiner* combiner_;
+};
+
+// Tracks connectivity state.  Maintains a list of watchers that are
+// notified whenever the state changes.
+//
+// Note that once the state becomes SHUTDOWN, watchers will be notified
+// and then automatically orphaned (i.e., RemoveWatcher() does not need
+// to be called).
+class ConnectivityStateTracker {
+ public:
+  ConnectivityStateTracker(const char* name,
+                           grpc_connectivity_state state = GRPC_CHANNEL_IDLE)
+      : name_(name), state_(state) {}
+
+  ~ConnectivityStateTracker();
+
+  // Adds a watcher.
+  // If the current state is different than initial_state, the watcher
+  // will be notified immediately.  Otherwise, it will be notified
+  // whenever the state changes.
+  // Not thread safe; access must be serialized with an external lock.
+  void AddWatcher(grpc_connectivity_state initial_state,
+                  OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  // Removes a watcher.  The watcher will be orphaned.
+  // Not thread safe; access must be serialized with an external lock.
+  void RemoveWatcher(ConnectivityStateWatcherInterface* watcher);
+
+  // Sets connectivity state.
+  // Not thread safe; access must be serialized with an external lock.
+  void SetState(grpc_connectivity_state state, const char* reason);
+
+  // Gets the current state.
+  // Thread safe; no need to use an external lock.
+  grpc_connectivity_state state() const;
+
+ private:
+  const char* name_;
+  Atomic<grpc_connectivity_state> state_;
+  // TODO(roth): Once we can use C++-14 heterogeneous lookups, this can
+  // be a set instead of a map.
+  std::map<ConnectivityStateWatcherInterface*,
+           OrphanablePtr<ConnectivityStateWatcherInterface>>
+      watchers_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/error_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/error_utils.h
new file mode 100644
index 0000000..9a46267
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/error_utils.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H
+#define GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+/// A utility function to get the status code and message to be returned
+/// to the application.  If not set in the top-level message, looks
+/// through child errors until it finds the first one with these attributes.
+/// All attributes are pulled from the same child error. error_string will
+/// be populated with the entire error string. If any of the attributes (code,
+/// msg, http_status, error_string) are unneeded, they can be passed as
+/// NULL.
+void grpc_error_get_status(grpc_error* error, grpc_millis deadline,
+                           grpc_status_code* code, grpc_slice* slice,
+                           grpc_http2_error_code* http_status,
+                           const char** error_string);
+
+/// A utility function to check whether there is a clear status code that
+/// doesn't need to be guessed in \a error. This means that \a error or some
+/// child has GRPC_ERROR_INT_GRPC_STATUS set, or that it is GRPC_ERROR_NONE or
+/// GRPC_ERROR_CANCELLED
+bool grpc_error_has_clear_grpc_status(grpc_error* error);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/http2_errors.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/http2_errors.h
new file mode 100644
index 0000000..d412c5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/http2_errors.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H
+#define GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H
+
+/* error codes for RST_STREAM from http2 draft 14 section 7 */
+typedef enum {
+  GRPC_HTTP2_NO_ERROR = 0x0,
+  GRPC_HTTP2_PROTOCOL_ERROR = 0x1,
+  GRPC_HTTP2_INTERNAL_ERROR = 0x2,
+  GRPC_HTTP2_FLOW_CONTROL_ERROR = 0x3,
+  GRPC_HTTP2_SETTINGS_TIMEOUT = 0x4,
+  GRPC_HTTP2_STREAM_CLOSED = 0x5,
+  GRPC_HTTP2_FRAME_SIZE_ERROR = 0x6,
+  GRPC_HTTP2_REFUSED_STREAM = 0x7,
+  GRPC_HTTP2_CANCEL = 0x8,
+  GRPC_HTTP2_COMPRESSION_ERROR = 0x9,
+  GRPC_HTTP2_CONNECT_ERROR = 0xa,
+  GRPC_HTTP2_ENHANCE_YOUR_CALM = 0xb,
+  GRPC_HTTP2_INADEQUATE_SECURITY = 0xc,
+  /* force use of a default clause */
+  GRPC_HTTP2__ERROR_DO_NOT_USE = -1
+} grpc_http2_error_code;
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata.h
new file mode 100644
index 0000000..4bb8d64
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata.h	
@@ -0,0 +1,446 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/log.h>
+
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/slice/slice_utils.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_metadata;
+
+/* This file provides a mechanism for tracking metadata through the grpc stack.
+   It's not intended for consumption outside of the library.
+
+   Metadata is tracked in the context of a sharded global grpc_mdctx. The
+   context tracks unique strings (grpc_mdstr) and pairs of strings
+   (grpc_mdelem). Any of these objects can be checked for equality by comparing
+   their pointers. These objects are reference counted.
+
+   grpc_mdelem can additionally store a (non-NULL) user data pointer. This
+   pointer is intended to be used to cache semantic meaning of a metadata
+   element. For example, an OAuth token may cache the credentials it represents
+   and the time at which it expires in the mdelem user data.
+
+   Combining this metadata cache and the hpack compression table allows us to
+   simply lookup complete preparsed objects quickly, incurring a few atomic
+   ops per metadata element on the fast path.
+
+   grpc_mdelem instances MAY live longer than their refcount implies, and are
+   garbage collected periodically, meaning cached data can easily outlive a
+   single request.
+
+   STATIC METADATA: in static_metadata.h we declare a set of static metadata.
+   These mdelems and mdstrs are available via pre-declared code generated macros
+   and are available to code anywhere between grpc_init() and grpc_shutdown().
+   They are not refcounted, but can be passed to _ref and _unref functions
+   declared here - in which case those functions are effectively no-ops. */
+
+/* Forward declarations */
+typedef struct grpc_mdelem grpc_mdelem;
+
+/* if changing this, make identical changes in:
+   - grpc_core::{InternedMetadata, AllocatedMetadata}
+   - grpc_metadata in grpc_types.h */
+typedef struct grpc_mdelem_data {
+  const grpc_slice key;
+  const grpc_slice value;
+  /* there is a private part to this in metadata.c */
+} grpc_mdelem_data;
+
+/* GRPC_MDELEM_STORAGE_* enum values that can be treated as interned always have
+   this bit set in their integer value */
+#define GRPC_MDELEM_STORAGE_INTERNED_BIT 1
+
+/* External and static storage metadata has no refcount to ref/unref. Allocated
+ * and interned metadata do have a refcount. Metadata ref and unref methods use
+ * a switch statement on this enum to determine which behaviour to execute.
+ * Keeping the no-ref cases together and the ref-cases together leads to
+ * slightly better code generation (9 inlined instructions rather than 10). */
+typedef enum {
+  /* memory pointed to by grpc_mdelem::payload is owned by an external system */
+  GRPC_MDELEM_STORAGE_EXTERNAL = 0,
+  /* memory is in the static metadata table */
+  GRPC_MDELEM_STORAGE_STATIC = GRPC_MDELEM_STORAGE_INTERNED_BIT,
+  /* memory pointed to by grpc_mdelem::payload is allocated by the metadata
+     system */
+  GRPC_MDELEM_STORAGE_ALLOCATED = 2,
+  /* memory pointed to by grpc_mdelem::payload is interned by the metadata
+     system */
+  GRPC_MDELEM_STORAGE_INTERNED = 2 | GRPC_MDELEM_STORAGE_INTERNED_BIT,
+} grpc_mdelem_data_storage;
+
+struct grpc_mdelem {
+  /* a grpc_mdelem_data* generally, with the two lower bits signalling memory
+     ownership as per grpc_mdelem_data_storage */
+  uintptr_t payload;
+};
+
+#define GRPC_MDELEM_DATA(md) ((grpc_mdelem_data*)((md).payload & ~(uintptr_t)3))
+#define GRPC_MDELEM_STORAGE(md) \
+  ((grpc_mdelem_data_storage)((md).payload & (uintptr_t)3))
+#ifdef __cplusplus
+#define GRPC_MAKE_MDELEM(data, storage) \
+  (grpc_mdelem{((uintptr_t)(data)) | ((uintptr_t)storage)})
+#else
+#define GRPC_MAKE_MDELEM(data, storage) \
+  ((grpc_mdelem){((uintptr_t)(data)) | ((uintptr_t)storage)})
+#endif
+#define GRPC_MDELEM_IS_INTERNED(md)          \
+  ((grpc_mdelem_data_storage)((md).payload & \
+                              (uintptr_t)GRPC_MDELEM_STORAGE_INTERNED_BIT))
+
+/* Given arbitrary input slices, create a grpc_mdelem object. The caller refs
+ * the input slices; we unref them. This method is always safe to call; however,
+ * if we know data about the slices in question (e.g. if we knew our key was
+ * static) we can call specializations that save on cycle count. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_slice& key,
+                                    const grpc_slice& value);
+
+/* Like grpc_mdelem_from_slices, but we know that key is a static slice. This
+   saves us a few branches and a no-op call to md_unref() for the key. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::StaticMetadataSlice& key,
+                                    const grpc_slice& value);
+
+/* Like grpc_mdelem_from_slices, but key is static and val is static. */
+grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::StaticMetadataSlice& value);
+
+/* Like grpc_mdelem_from_slices, but key is static and val is interned. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::StaticMetadataSlice& key,
+                                    const grpc_core::ManagedMemorySlice& value);
+
+/* Like grpc_mdelem_from_slices, but key and val are interned. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::ManagedMemorySlice& key,
+                                    const grpc_core::ManagedMemorySlice& value);
+
+/* Cheaply convert a grpc_metadata to a grpc_mdelem; may use the grpc_metadata
+   object as backing storage (so lifetimes should align) */
+grpc_mdelem grpc_mdelem_from_grpc_metadata(grpc_metadata* metadata);
+
+/* Does not unref the slices; if a new non-interned mdelem is needed, allocates
+   one if compatible_external_backing_store is NULL, or uses
+   compatible_external_backing_store if it is non-NULL (in which case it's the
+   users responsibility to ensure that it outlives usage) */
+grpc_mdelem grpc_mdelem_create(
+    const grpc_slice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store);
+
+/* Like grpc_mdelem_create, but we know that key is static. */
+grpc_mdelem grpc_mdelem_create(
+    const grpc_core::StaticMetadataSlice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store);
+
+#define GRPC_MDKEY(md) (GRPC_MDELEM_DATA(md)->key)
+#define GRPC_MDVALUE(md) (GRPC_MDELEM_DATA(md)->value)
+
+bool grpc_mdelem_eq(grpc_mdelem a, grpc_mdelem b);
+/* Often we compare metadata where we know a-priori that the second parameter is
+ * static, and that the keys match. This most commonly happens when processing
+ * metadata batch callouts in initial/trailing filters. In this case, fastpath
+ * grpc_mdelem_eq and remove unnecessary checks. */
+inline bool grpc_mdelem_static_value_eq(grpc_mdelem a, grpc_mdelem b_static) {
+  if (a.payload == b_static.payload) return true;
+  return grpc_slice_eq_static_interned(GRPC_MDVALUE(a), GRPC_MDVALUE(b_static));
+}
+#define GRPC_MDISNULL(md) (GRPC_MDELEM_DATA(md) == NULL)
+
+inline bool grpc_mdelem_both_interned_eq(grpc_mdelem a_interned,
+                                         grpc_mdelem b_interned) {
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(a_interned) ||
+                   GRPC_MDISNULL(a_interned));
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(b_interned) ||
+                   GRPC_MDISNULL(b_interned));
+  return a_interned.payload == b_interned.payload;
+}
+
+/* Mutator and accessor for grpc_mdelem user data. The destructor function
+   is used as a type tag and is checked during user_data fetch. */
+void* grpc_mdelem_get_user_data(grpc_mdelem md, void (*if_destroy_func)(void*));
+void* grpc_mdelem_set_user_data(grpc_mdelem md, void (*destroy_func)(void*),
+                                void* data);
+
+// Defined in metadata.cc.
+struct mdtab_shard;
+
+#ifndef NDEBUG
+void grpc_mdelem_trace_ref(void* md, const grpc_slice& key,
+                           const grpc_slice& value, intptr_t refcnt,
+                           const char* file, int line);
+void grpc_mdelem_trace_unref(void* md, const grpc_slice& key,
+                             const grpc_slice& value, intptr_t refcnt,
+                             const char* file, int line);
+#endif
+namespace grpc_core {
+
+typedef void (*destroy_user_data_func)(void* data);
+
+struct UserData {
+  Mutex mu_user_data;
+  grpc_core::Atomic<destroy_user_data_func> destroy_user_data;
+  grpc_core::Atomic<void*> data;
+};
+
+class StaticMetadata {
+ public:
+  StaticMetadata(const grpc_slice& key, const grpc_slice& value, uintptr_t idx)
+      : kv_({key, value}), hash_(0), static_idx_(idx) {}
+
+  const grpc_mdelem_data& data() const { return kv_; }
+
+  void HashInit();
+  uint32_t hash() { return hash_; }
+  uintptr_t StaticIndex() { return static_idx_; }
+
+ private:
+  grpc_mdelem_data kv_;
+
+  /* private only data */
+  uint32_t hash_;
+  uintptr_t static_idx_;
+};
+
+class RefcountedMdBase {
+ public:
+  RefcountedMdBase(const grpc_slice& key, const grpc_slice& value)
+      : key_(key), value_(value), refcnt_(1) {}
+  RefcountedMdBase(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash)
+      : key_(key), value_(value), refcnt_(1), hash_(hash) {}
+
+  const grpc_slice& key() const { return key_; }
+  const grpc_slice& value() const { return value_; }
+  uint32_t hash() { return hash_; }
+
+#ifndef NDEBUG
+  void Ref(const char* file, int line) {
+    grpc_mdelem_trace_ref(this, key_, value_, RefValue(), file, line);
+    const intptr_t prior = refcnt_.FetchAdd(1, MemoryOrder::RELAXED);
+    GPR_ASSERT(prior > 0);
+  }
+  bool Unref(const char* file, int line) {
+    grpc_mdelem_trace_unref(this, key_, value_, RefValue(), file, line);
+    return Unref();
+  }
+#endif
+  void Ref() {
+    /* we can assume the ref count is >= 1 as the application is calling
+       this function - meaning that no adjustment to mdtab_free is necessary,
+       simplifying the logic here to be just an atomic increment */
+    refcnt_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  bool Unref() {
+    const intptr_t prior = refcnt_.FetchSub(1, MemoryOrder::ACQ_REL);
+    GPR_DEBUG_ASSERT(prior > 0);
+    return prior == 1;
+  }
+
+ protected:
+#ifndef NDEBUG
+  void TraceAtStart(const char* tag);
+#endif
+
+  intptr_t RefValue() { return refcnt_.Load(MemoryOrder::RELAXED); }
+  bool AllRefsDropped() { return refcnt_.Load(MemoryOrder::ACQUIRE) == 0; }
+  bool FirstRef() { return refcnt_.FetchAdd(1, MemoryOrder::RELAXED) == 0; }
+
+ private:
+  /* must be byte compatible with grpc_mdelem_data */
+  grpc_slice key_;
+  grpc_slice value_;
+  grpc_core::Atomic<intptr_t> refcnt_;
+  uint32_t hash_ = 0;
+};
+
+class InternedMetadata : public RefcountedMdBase {
+ public:
+  // TODO(arjunroy): Change to use strongly typed slices instead.
+  struct NoRefKey {};
+  struct BucketLink {
+    explicit BucketLink(InternedMetadata* md) : next(md) {}
+
+    InternedMetadata* next = nullptr;
+  };
+  InternedMetadata(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash, InternedMetadata* next);
+  InternedMetadata(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash, InternedMetadata* next, const NoRefKey*);
+
+  ~InternedMetadata();
+  void RefWithShardLocked(mdtab_shard* shard);
+  UserData* user_data() { return &user_data_; }
+  InternedMetadata* bucket_next() { return link_.next; }
+  void set_bucket_next(InternedMetadata* md) { link_.next = md; }
+
+  static size_t CleanupLinkedMetadata(BucketLink* head);
+
+ private:
+  UserData user_data_;
+  BucketLink link_;
+};
+
+/* Shadow structure for grpc_mdelem_data for allocated elements */
+class AllocatedMetadata : public RefcountedMdBase {
+ public:
+  // TODO(arjunroy): Change to use strongly typed slices instead.
+  struct NoRefKey {};
+  AllocatedMetadata(const grpc_slice& key, const grpc_slice& value);
+  AllocatedMetadata(const grpc_core::ManagedMemorySlice& key,
+                    const grpc_core::UnmanagedMemorySlice& value);
+  AllocatedMetadata(const grpc_core::ExternallyManagedSlice& key,
+                    const grpc_core::UnmanagedMemorySlice& value);
+  AllocatedMetadata(const grpc_slice& key, const grpc_slice& value,
+                    const NoRefKey*);
+  ~AllocatedMetadata();
+
+  UserData* user_data() { return &user_data_; }
+
+ private:
+  UserData user_data_;
+};
+
+}  // namespace grpc_core
+
+#ifndef NDEBUG
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s), __FILE__, __LINE__)
+inline grpc_mdelem grpc_mdelem_ref(grpc_mdelem gmd, const char* file,
+                                   int line) {
+#else  // ifndef NDEBUG
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s))
+inline grpc_mdelem grpc_mdelem_ref(grpc_mdelem gmd) {
+#endif  // ifndef NDEBUG
+  switch (GRPC_MDELEM_STORAGE(gmd)) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      break;
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      auto* md =
+          reinterpret_cast<grpc_core::InternedMetadata*> GRPC_MDELEM_DATA(gmd);
+      /* use C assert to have this removed in opt builds */
+#ifndef NDEBUG
+      md->Ref(file, line);
+#else
+      md->Ref();
+#endif
+      break;
+    }
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      auto* md =
+          reinterpret_cast<grpc_core::AllocatedMetadata*> GRPC_MDELEM_DATA(gmd);
+#ifndef NDEBUG
+      md->Ref(file, line);
+#else
+      md->Ref();
+#endif
+      break;
+    }
+  }
+  return gmd;
+}
+
+#ifndef NDEBUG
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s), __FILE__, __LINE__)
+void grpc_mdelem_on_final_unref(grpc_mdelem_data_storage storage, void* ptr,
+                                uint32_t hash, const char* file, int line);
+inline void grpc_mdelem_unref(grpc_mdelem gmd, const char* file, int line) {
+#else
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s))
+void grpc_mdelem_on_final_unref(grpc_mdelem_data_storage storage, void* ptr,
+                                uint32_t hash);
+inline void grpc_mdelem_unref(grpc_mdelem gmd) {
+#endif
+  const grpc_mdelem_data_storage storage = GRPC_MDELEM_STORAGE(gmd);
+  switch (storage) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      return;
+    case GRPC_MDELEM_STORAGE_INTERNED:
+    case GRPC_MDELEM_STORAGE_ALLOCATED:
+      auto* md =
+          reinterpret_cast<grpc_core::RefcountedMdBase*> GRPC_MDELEM_DATA(gmd);
+      /* once the refcount hits zero, some other thread can come along and
+         free an interned md at any time: it's unsafe from this point on to
+         access it so we read the hash now. */
+      uint32_t hash = md->hash();
+#ifndef NDEBUG
+      if (GPR_UNLIKELY(md->Unref(file, line))) {
+        grpc_mdelem_on_final_unref(storage, md, hash, file, line);
+#else
+      if (GPR_UNLIKELY(md->Unref())) {
+        grpc_mdelem_on_final_unref(storage, md, hash);
+#endif
+      }
+      return;
+  }
+}
+
+#define GRPC_MDNULL GRPC_MAKE_MDELEM(NULL, GRPC_MDELEM_STORAGE_EXTERNAL)
+
+/* We add 32 bytes of padding as per RFC-7540 section 6.5.2. */
+#define GRPC_MDELEM_LENGTH(e)                                                  \
+  (GRPC_SLICE_LENGTH(GRPC_MDKEY((e))) + GRPC_SLICE_LENGTH(GRPC_MDVALUE((e))) + \
+   32)
+
+#define GRPC_MDSTR_KV_HASH(k_hash, v_hash) (GPR_ROTL((k_hash), 2) ^ (v_hash))
+
+void grpc_mdctx_global_init(void);
+void grpc_mdctx_global_shutdown();
+
+/* Like grpc_mdelem_from_slices, but we know that key is a static or interned
+   slice and value is not static or interned. This gives us an inlinable
+   fastpath - we know we must allocate metadata now, and that we do not need to
+   unref the value (rather, we just transfer the ref). We can avoid a ref since:
+   1) the key slice is passed in already ref'd
+   2) We're guaranteed to create a new Allocated slice, thus meaning the
+      ref can be considered 'transferred'.*/
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::ManagedMemorySlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::ExternallyManagedSlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata_batch.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata_batch.h
new file mode 100644
index 0000000..46a437e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/metadata_batch.h	
@@ -0,0 +1,192 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+typedef struct grpc_linked_mdelem {
+  grpc_linked_mdelem() {}
+
+  grpc_mdelem md;
+  struct grpc_linked_mdelem* next = nullptr;
+  struct grpc_linked_mdelem* prev = nullptr;
+  void* reserved;
+} grpc_linked_mdelem;
+
+typedef struct grpc_mdelem_list {
+  size_t count;
+  size_t default_count;  // Number of default keys.
+  grpc_linked_mdelem* head;
+  grpc_linked_mdelem* tail;
+} grpc_mdelem_list;
+
+typedef struct grpc_metadata_batch {
+  /** Metadata elements in this batch */
+  grpc_mdelem_list list;
+  grpc_metadata_batch_callouts idx;
+  /** Used to calculate grpc-timeout at the point of sending,
+      or GRPC_MILLIS_INF_FUTURE if this batch does not need to send a
+      grpc-timeout */
+  grpc_millis deadline;
+} grpc_metadata_batch;
+
+void grpc_metadata_batch_init(grpc_metadata_batch* batch);
+void grpc_metadata_batch_destroy(grpc_metadata_batch* batch);
+void grpc_metadata_batch_clear(grpc_metadata_batch* batch);
+bool grpc_metadata_batch_is_empty(grpc_metadata_batch* batch);
+
+/* Returns the transport size of the batch. */
+size_t grpc_metadata_batch_size(grpc_metadata_batch* batch);
+
+/** Remove \a storage from the batch, unreffing the mdelem contained */
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_linked_mdelem* storage);
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_metadata_batch_callouts_index idx);
+
+/** Substitute a new mdelem for an old value */
+grpc_error* grpc_metadata_batch_substitute(grpc_metadata_batch* batch,
+                                           grpc_linked_mdelem* storage,
+                                           grpc_mdelem new_value);
+
+void grpc_metadata_batch_set_value(grpc_linked_mdelem* storage,
+                                   const grpc_slice& value);
+
+/** Add \a storage to the beginning of \a batch. storage->md is
+    assumed to be valid.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call. */
+grpc_error* grpc_metadata_batch_link_head(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_metadata_batch_link_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) GRPC_MUST_USE_RESULT;
+
+/** Add \a storage to the end of \a batch. storage->md is
+    assumed to be valid.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call. */
+grpc_error* grpc_metadata_batch_link_tail(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_metadata_batch_link_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) GRPC_MUST_USE_RESULT;
+
+/** Add \a elem_to_add as the first element in \a batch, using
+    \a storage as backing storage for the linked list element.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call.
+    Takes ownership of \a elem_to_add */
+grpc_error* grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
+
+// TODO(arjunroy, roth): Remove redundant methods.
+// add/link_head/tail are almost identical.
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  return grpc_metadata_batch_link_head(batch, storage, idx);
+}
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add, grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_add_head(batch, storage, idx);
+}
+
+/** Add \a elem_to_add as the last element in \a batch, using
+    \a storage as backing storage for the linked list element.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call.
+    Takes ownership of \a elem_to_add */
+grpc_error* grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  return grpc_metadata_batch_link_tail(batch, storage, idx);
+}
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add, grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_add_tail(batch, storage, idx);
+}
+
+grpc_error* grpc_attach_md_to_error(grpc_error* src, grpc_mdelem md);
+
+typedef struct {
+  grpc_error* error;
+  grpc_mdelem md;
+} grpc_filtered_mdelem;
+
+#define GRPC_FILTERED_ERROR(error) \
+  { (error), GRPC_MDNULL }
+#define GRPC_FILTERED_MDELEM(md) \
+  { GRPC_ERROR_NONE, (md) }
+#define GRPC_FILTERED_REMOVE() \
+  { GRPC_ERROR_NONE, GRPC_MDNULL }
+
+typedef grpc_filtered_mdelem (*grpc_metadata_batch_filter_func)(
+    void* user_data, grpc_mdelem elem);
+grpc_error* grpc_metadata_batch_filter(
+    grpc_metadata_batch* batch, grpc_metadata_batch_filter_func func,
+    void* user_data, const char* composite_error_string) GRPC_MUST_USE_RESULT;
+
+#ifndef NDEBUG
+void grpc_metadata_batch_assert_ok(grpc_metadata_batch* comd);
+#else
+#define grpc_metadata_batch_assert_ok(comd) \
+  do {                                      \
+  } while (0)
+#endif
+
+/// Copies \a src to \a dst.  \a storage must point to an array of
+/// \a grpc_linked_mdelem structs of at least the same size as \a src.
+void grpc_metadata_batch_copy(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst,
+                              grpc_linked_mdelem* storage);
+
+void grpc_metadata_batch_move(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/pid_controller.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/pid_controller.h
new file mode 100644
index 0000000..e26205b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/pid_controller.h	
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H
+#define GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <limits>
+
+/* \file Simple PID controller.
+   Implements a proportional-integral-derivative controller.
+   Used when we want to iteratively control a variable to converge some other
+   observed value to a 'set-point'.
+   Gains can be set to adjust sensitivity to current error (p), the integral
+   of error (i), and the derivative of error (d). */
+
+namespace grpc_core {
+
+class PidController {
+ public:
+  class Args {
+   public:
+    double gain_p() const { return gain_p_; }
+    double gain_i() const { return gain_i_; }
+    double gain_d() const { return gain_d_; }
+    double initial_control_value() const { return initial_control_value_; }
+    double min_control_value() const { return min_control_value_; }
+    double max_control_value() const { return max_control_value_; }
+    double integral_range() const { return integral_range_; }
+
+    Args& set_gain_p(double gain_p) {
+      gain_p_ = gain_p;
+      return *this;
+    }
+    Args& set_gain_i(double gain_i) {
+      gain_i_ = gain_i;
+      return *this;
+    }
+    Args& set_gain_d(double gain_d) {
+      gain_d_ = gain_d;
+      return *this;
+    }
+    Args& set_initial_control_value(double initial_control_value) {
+      initial_control_value_ = initial_control_value;
+      return *this;
+    }
+    Args& set_min_control_value(double min_control_value) {
+      min_control_value_ = min_control_value;
+      return *this;
+    }
+    Args& set_max_control_value(double max_control_value) {
+      max_control_value_ = max_control_value;
+      return *this;
+    }
+    Args& set_integral_range(double integral_range) {
+      integral_range_ = integral_range;
+      return *this;
+    }
+
+   private:
+    double gain_p_ = 0.0;
+    double gain_i_ = 0.0;
+    double gain_d_ = 0.0;
+    double initial_control_value_ = 0.0;
+    double min_control_value_ = std::numeric_limits<double>::min();
+    double max_control_value_ = std::numeric_limits<double>::max();
+    double integral_range_ = std::numeric_limits<double>::max();
+  };
+
+  explicit PidController(const Args& args);
+
+  /// Reset the controller internal state: useful when the environment has
+  /// changed significantly
+  void Reset() {
+    last_error_ = 0.0;
+    last_dc_dt_ = 0.0;
+    error_integral_ = 0.0;
+  }
+
+  /// Update the controller: given a current error estimate, and the time since
+  /// the last update, returns a new control value
+  double Update(double error, double dt);
+
+  /// Returns the last control value calculated
+  double last_control_value() const { return last_control_value_; }
+
+  /// Returns the current error integral (mostly for testing)
+  double error_integral() const { return error_integral_; }
+
+ private:
+  double last_error_ = 0.0;
+  double error_integral_ = 0.0;
+  double last_control_value_;
+  double last_dc_dt_ = 0.0;
+  const Args args_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/static_metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/static_metadata.h
new file mode 100644
index 0000000..e88cf9f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/static_metadata.h	
@@ -0,0 +1,597 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * WARNING: Auto-generated code.
+ *
+ * To make changes to this file, change
+ * tools/codegen/core/gen_static_metadata.py, and then re-run it.
+ *
+ * See metadata.h for an explanation of the interface here, and metadata.cc for
+ * an explanation of what's going on.
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cstdint>
+
+#include "src/core/lib/transport/metadata.h"
+
+static_assert(
+    std::is_trivially_destructible<grpc_core::StaticMetadataSlice>::value,
+    "grpc_core::StaticMetadataSlice must be trivially destructible.");
+#define GRPC_STATIC_MDSTR_COUNT 108
+
+void grpc_init_static_metadata_ctx(void);
+void grpc_destroy_static_metadata_ctx(void);
+namespace grpc_core {
+#ifndef NDEBUG
+constexpr uint64_t kGrpcStaticMetadataInitCanary = 0xCAFEF00DC0FFEE11L;
+uint64_t StaticMetadataInitCanary();
+#endif
+extern const StaticMetadataSlice* g_static_metadata_slice_table;
+}
+inline const grpc_core::StaticMetadataSlice* grpc_static_slice_table() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_metadata_slice_table != nullptr);
+  return grpc_core::g_static_metadata_slice_table;
+}
+
+/* ":path" */
+#define GRPC_MDSTR_PATH (grpc_static_slice_table()[0])
+/* ":method" */
+#define GRPC_MDSTR_METHOD (grpc_static_slice_table()[1])
+/* ":status" */
+#define GRPC_MDSTR_STATUS (grpc_static_slice_table()[2])
+/* ":authority" */
+#define GRPC_MDSTR_AUTHORITY (grpc_static_slice_table()[3])
+/* ":scheme" */
+#define GRPC_MDSTR_SCHEME (grpc_static_slice_table()[4])
+/* "te" */
+#define GRPC_MDSTR_TE (grpc_static_slice_table()[5])
+/* "grpc-message" */
+#define GRPC_MDSTR_GRPC_MESSAGE (grpc_static_slice_table()[6])
+/* "grpc-status" */
+#define GRPC_MDSTR_GRPC_STATUS (grpc_static_slice_table()[7])
+/* "grpc-payload-bin" */
+#define GRPC_MDSTR_GRPC_PAYLOAD_BIN (grpc_static_slice_table()[8])
+/* "grpc-encoding" */
+#define GRPC_MDSTR_GRPC_ENCODING (grpc_static_slice_table()[9])
+/* "grpc-accept-encoding" */
+#define GRPC_MDSTR_GRPC_ACCEPT_ENCODING (grpc_static_slice_table()[10])
+/* "grpc-server-stats-bin" */
+#define GRPC_MDSTR_GRPC_SERVER_STATS_BIN (grpc_static_slice_table()[11])
+/* "grpc-tags-bin" */
+#define GRPC_MDSTR_GRPC_TAGS_BIN (grpc_static_slice_table()[12])
+/* "grpc-trace-bin" */
+#define GRPC_MDSTR_GRPC_TRACE_BIN (grpc_static_slice_table()[13])
+/* "content-type" */
+#define GRPC_MDSTR_CONTENT_TYPE (grpc_static_slice_table()[14])
+/* "content-encoding" */
+#define GRPC_MDSTR_CONTENT_ENCODING (grpc_static_slice_table()[15])
+/* "accept-encoding" */
+#define GRPC_MDSTR_ACCEPT_ENCODING (grpc_static_slice_table()[16])
+/* "grpc-internal-encoding-request" */
+#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST \
+  (grpc_static_slice_table()[17])
+/* "grpc-internal-stream-encoding-request" */
+#define GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST \
+  (grpc_static_slice_table()[18])
+/* "user-agent" */
+#define GRPC_MDSTR_USER_AGENT (grpc_static_slice_table()[19])
+/* "host" */
+#define GRPC_MDSTR_HOST (grpc_static_slice_table()[20])
+/* "grpc-previous-rpc-attempts" */
+#define GRPC_MDSTR_GRPC_PREVIOUS_RPC_ATTEMPTS (grpc_static_slice_table()[21])
+/* "grpc-retry-pushback-ms" */
+#define GRPC_MDSTR_GRPC_RETRY_PUSHBACK_MS (grpc_static_slice_table()[22])
+/* "x-endpoint-load-metrics-bin" */
+#define GRPC_MDSTR_X_ENDPOINT_LOAD_METRICS_BIN (grpc_static_slice_table()[23])
+/* "grpc-timeout" */
+#define GRPC_MDSTR_GRPC_TIMEOUT (grpc_static_slice_table()[24])
+/* "1" */
+#define GRPC_MDSTR_1 (grpc_static_slice_table()[25])
+/* "2" */
+#define GRPC_MDSTR_2 (grpc_static_slice_table()[26])
+/* "3" */
+#define GRPC_MDSTR_3 (grpc_static_slice_table()[27])
+/* "4" */
+#define GRPC_MDSTR_4 (grpc_static_slice_table()[28])
+/* "" */
+#define GRPC_MDSTR_EMPTY (grpc_static_slice_table()[29])
+/* "grpc.wait_for_ready" */
+#define GRPC_MDSTR_GRPC_DOT_WAIT_FOR_READY (grpc_static_slice_table()[30])
+/* "grpc.timeout" */
+#define GRPC_MDSTR_GRPC_DOT_TIMEOUT (grpc_static_slice_table()[31])
+/* "grpc.max_request_message_bytes" */
+#define GRPC_MDSTR_GRPC_DOT_MAX_REQUEST_MESSAGE_BYTES \
+  (grpc_static_slice_table()[32])
+/* "grpc.max_response_message_bytes" */
+#define GRPC_MDSTR_GRPC_DOT_MAX_RESPONSE_MESSAGE_BYTES \
+  (grpc_static_slice_table()[33])
+/* "/grpc.lb.v1.LoadBalancer/BalanceLoad" */
+#define GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD \
+  (grpc_static_slice_table()[34])
+/* "/envoy.service.load_stats.v2.LoadReportingService/StreamLoadStats" */
+#define GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_LOAD_STATS_DOT_V2_DOT_LOADREPORTINGSERVICE_SLASH_STREAMLOADSTATS \
+  (grpc_static_slice_table()[35])
+/* "/grpc.health.v1.Health/Watch" */
+#define GRPC_MDSTR_SLASH_GRPC_DOT_HEALTH_DOT_V1_DOT_HEALTH_SLASH_WATCH \
+  (grpc_static_slice_table()[36])
+/* "/envoy.service.discovery.v2.AggregatedDiscoveryService/StreamAggregatedResources"
+ */
+#define GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_DISCOVERY_DOT_V2_DOT_AGGREGATEDDISCOVERYSERVICE_SLASH_STREAMAGGREGATEDRESOURCES \
+  (grpc_static_slice_table()[37])
+/* "deflate" */
+#define GRPC_MDSTR_DEFLATE (grpc_static_slice_table()[38])
+/* "gzip" */
+#define GRPC_MDSTR_GZIP (grpc_static_slice_table()[39])
+/* "stream/gzip" */
+#define GRPC_MDSTR_STREAM_SLASH_GZIP (grpc_static_slice_table()[40])
+/* "GET" */
+#define GRPC_MDSTR_GET (grpc_static_slice_table()[41])
+/* "POST" */
+#define GRPC_MDSTR_POST (grpc_static_slice_table()[42])
+/* "/" */
+#define GRPC_MDSTR_SLASH (grpc_static_slice_table()[43])
+/* "/index.html" */
+#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (grpc_static_slice_table()[44])
+/* "http" */
+#define GRPC_MDSTR_HTTP (grpc_static_slice_table()[45])
+/* "https" */
+#define GRPC_MDSTR_HTTPS (grpc_static_slice_table()[46])
+/* "200" */
+#define GRPC_MDSTR_200 (grpc_static_slice_table()[47])
+/* "204" */
+#define GRPC_MDSTR_204 (grpc_static_slice_table()[48])
+/* "206" */
+#define GRPC_MDSTR_206 (grpc_static_slice_table()[49])
+/* "304" */
+#define GRPC_MDSTR_304 (grpc_static_slice_table()[50])
+/* "400" */
+#define GRPC_MDSTR_400 (grpc_static_slice_table()[51])
+/* "404" */
+#define GRPC_MDSTR_404 (grpc_static_slice_table()[52])
+/* "500" */
+#define GRPC_MDSTR_500 (grpc_static_slice_table()[53])
+/* "accept-charset" */
+#define GRPC_MDSTR_ACCEPT_CHARSET (grpc_static_slice_table()[54])
+/* "gzip, deflate" */
+#define GRPC_MDSTR_GZIP_COMMA_DEFLATE (grpc_static_slice_table()[55])
+/* "accept-language" */
+#define GRPC_MDSTR_ACCEPT_LANGUAGE (grpc_static_slice_table()[56])
+/* "accept-ranges" */
+#define GRPC_MDSTR_ACCEPT_RANGES (grpc_static_slice_table()[57])
+/* "accept" */
+#define GRPC_MDSTR_ACCEPT (grpc_static_slice_table()[58])
+/* "access-control-allow-origin" */
+#define GRPC_MDSTR_ACCESS_CONTROL_ALLOW_ORIGIN (grpc_static_slice_table()[59])
+/* "age" */
+#define GRPC_MDSTR_AGE (grpc_static_slice_table()[60])
+/* "allow" */
+#define GRPC_MDSTR_ALLOW (grpc_static_slice_table()[61])
+/* "authorization" */
+#define GRPC_MDSTR_AUTHORIZATION (grpc_static_slice_table()[62])
+/* "cache-control" */
+#define GRPC_MDSTR_CACHE_CONTROL (grpc_static_slice_table()[63])
+/* "content-disposition" */
+#define GRPC_MDSTR_CONTENT_DISPOSITION (grpc_static_slice_table()[64])
+/* "content-language" */
+#define GRPC_MDSTR_CONTENT_LANGUAGE (grpc_static_slice_table()[65])
+/* "content-length" */
+#define GRPC_MDSTR_CONTENT_LENGTH (grpc_static_slice_table()[66])
+/* "content-location" */
+#define GRPC_MDSTR_CONTENT_LOCATION (grpc_static_slice_table()[67])
+/* "content-range" */
+#define GRPC_MDSTR_CONTENT_RANGE (grpc_static_slice_table()[68])
+/* "cookie" */
+#define GRPC_MDSTR_COOKIE (grpc_static_slice_table()[69])
+/* "date" */
+#define GRPC_MDSTR_DATE (grpc_static_slice_table()[70])
+/* "etag" */
+#define GRPC_MDSTR_ETAG (grpc_static_slice_table()[71])
+/* "expect" */
+#define GRPC_MDSTR_EXPECT (grpc_static_slice_table()[72])
+/* "expires" */
+#define GRPC_MDSTR_EXPIRES (grpc_static_slice_table()[73])
+/* "from" */
+#define GRPC_MDSTR_FROM (grpc_static_slice_table()[74])
+/* "if-match" */
+#define GRPC_MDSTR_IF_MATCH (grpc_static_slice_table()[75])
+/* "if-modified-since" */
+#define GRPC_MDSTR_IF_MODIFIED_SINCE (grpc_static_slice_table()[76])
+/* "if-none-match" */
+#define GRPC_MDSTR_IF_NONE_MATCH (grpc_static_slice_table()[77])
+/* "if-range" */
+#define GRPC_MDSTR_IF_RANGE (grpc_static_slice_table()[78])
+/* "if-unmodified-since" */
+#define GRPC_MDSTR_IF_UNMODIFIED_SINCE (grpc_static_slice_table()[79])
+/* "last-modified" */
+#define GRPC_MDSTR_LAST_MODIFIED (grpc_static_slice_table()[80])
+/* "link" */
+#define GRPC_MDSTR_LINK (grpc_static_slice_table()[81])
+/* "location" */
+#define GRPC_MDSTR_LOCATION (grpc_static_slice_table()[82])
+/* "max-forwards" */
+#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table()[83])
+/* "proxy-authenticate" */
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table()[84])
+/* "proxy-authorization" */
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table()[85])
+/* "range" */
+#define GRPC_MDSTR_RANGE (grpc_static_slice_table()[86])
+/* "referer" */
+#define GRPC_MDSTR_REFERER (grpc_static_slice_table()[87])
+/* "refresh" */
+#define GRPC_MDSTR_REFRESH (grpc_static_slice_table()[88])
+/* "retry-after" */
+#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table()[89])
+/* "server" */
+#define GRPC_MDSTR_SERVER (grpc_static_slice_table()[90])
+/* "set-cookie" */
+#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table()[91])
+/* "strict-transport-security" */
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table()[92])
+/* "transfer-encoding" */
+#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table()[93])
+/* "vary" */
+#define GRPC_MDSTR_VARY (grpc_static_slice_table()[94])
+/* "via" */
+#define GRPC_MDSTR_VIA (grpc_static_slice_table()[95])
+/* "www-authenticate" */
+#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table()[96])
+/* "0" */
+#define GRPC_MDSTR_0 (grpc_static_slice_table()[97])
+/* "identity" */
+#define GRPC_MDSTR_IDENTITY (grpc_static_slice_table()[98])
+/* "trailers" */
+#define GRPC_MDSTR_TRAILERS (grpc_static_slice_table()[99])
+/* "application/grpc" */
+#define GRPC_MDSTR_APPLICATION_SLASH_GRPC (grpc_static_slice_table()[100])
+/* "grpc" */
+#define GRPC_MDSTR_GRPC (grpc_static_slice_table()[101])
+/* "PUT" */
+#define GRPC_MDSTR_PUT (grpc_static_slice_table()[102])
+/* "lb-cost-bin" */
+#define GRPC_MDSTR_LB_COST_BIN (grpc_static_slice_table()[103])
+/* "identity,deflate" */
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table()[104])
+/* "identity,gzip" */
+#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table()[105])
+/* "deflate,gzip" */
+#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table()[106])
+/* "identity,deflate,gzip" */
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
+  (grpc_static_slice_table()[107])
+
+namespace grpc_core {
+struct StaticSliceRefcount;
+extern StaticSliceRefcount* g_static_metadata_slice_refcounts;
+}  // namespace grpc_core
+inline grpc_core::StaticSliceRefcount* grpc_static_metadata_refcounts() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_metadata_slice_refcounts != nullptr);
+  return grpc_core::g_static_metadata_slice_refcounts;
+}
+
+#define GRPC_IS_STATIC_METADATA_STRING(slice) \
+  ((slice).refcount != NULL &&                \
+   (slice).refcount->GetType() == grpc_slice_refcount::Type::STATIC)
+
+#define GRPC_STATIC_METADATA_INDEX(static_slice)                              \
+  (reinterpret_cast<grpc_core::StaticSliceRefcount*>((static_slice).refcount) \
+       ->index)
+
+#define GRPC_STATIC_MDELEM_COUNT 85
+
+namespace grpc_core {
+extern StaticMetadata* g_static_mdelem_table;
+extern grpc_mdelem* g_static_mdelem_manifested;
+}  // namespace grpc_core
+inline grpc_core::StaticMetadata* grpc_static_mdelem_table() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_mdelem_table != nullptr);
+  return grpc_core::g_static_mdelem_table;
+}
+inline grpc_mdelem* grpc_static_mdelem_manifested() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_mdelem_manifested != nullptr);
+  return grpc_core::g_static_mdelem_manifested;
+}
+
+extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
+/* ":authority": "" */
+#define GRPC_MDELEM_AUTHORITY_EMPTY (grpc_static_mdelem_manifested()[0])
+/* ":method": "GET" */
+#define GRPC_MDELEM_METHOD_GET (grpc_static_mdelem_manifested()[1])
+/* ":method": "POST" */
+#define GRPC_MDELEM_METHOD_POST (grpc_static_mdelem_manifested()[2])
+/* ":path": "/" */
+#define GRPC_MDELEM_PATH_SLASH (grpc_static_mdelem_manifested()[3])
+/* ":path": "/index.html" */
+#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML \
+  (grpc_static_mdelem_manifested()[4])
+/* ":scheme": "http" */
+#define GRPC_MDELEM_SCHEME_HTTP (grpc_static_mdelem_manifested()[5])
+/* ":scheme": "https" */
+#define GRPC_MDELEM_SCHEME_HTTPS (grpc_static_mdelem_manifested()[6])
+/* ":status": "200" */
+#define GRPC_MDELEM_STATUS_200 (grpc_static_mdelem_manifested()[7])
+/* ":status": "204" */
+#define GRPC_MDELEM_STATUS_204 (grpc_static_mdelem_manifested()[8])
+/* ":status": "206" */
+#define GRPC_MDELEM_STATUS_206 (grpc_static_mdelem_manifested()[9])
+/* ":status": "304" */
+#define GRPC_MDELEM_STATUS_304 (grpc_static_mdelem_manifested()[10])
+/* ":status": "400" */
+#define GRPC_MDELEM_STATUS_400 (grpc_static_mdelem_manifested()[11])
+/* ":status": "404" */
+#define GRPC_MDELEM_STATUS_404 (grpc_static_mdelem_manifested()[12])
+/* ":status": "500" */
+#define GRPC_MDELEM_STATUS_500 (grpc_static_mdelem_manifested()[13])
+/* "accept-charset": "" */
+#define GRPC_MDELEM_ACCEPT_CHARSET_EMPTY (grpc_static_mdelem_manifested()[14])
+/* "accept-encoding": "gzip, deflate" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP_COMMA_DEFLATE \
+  (grpc_static_mdelem_manifested()[15])
+/* "accept-language": "" */
+#define GRPC_MDELEM_ACCEPT_LANGUAGE_EMPTY (grpc_static_mdelem_manifested()[16])
+/* "accept-ranges": "" */
+#define GRPC_MDELEM_ACCEPT_RANGES_EMPTY (grpc_static_mdelem_manifested()[17])
+/* "accept": "" */
+#define GRPC_MDELEM_ACCEPT_EMPTY (grpc_static_mdelem_manifested()[18])
+/* "access-control-allow-origin": "" */
+#define GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY \
+  (grpc_static_mdelem_manifested()[19])
+/* "age": "" */
+#define GRPC_MDELEM_AGE_EMPTY (grpc_static_mdelem_manifested()[20])
+/* "allow": "" */
+#define GRPC_MDELEM_ALLOW_EMPTY (grpc_static_mdelem_manifested()[21])
+/* "authorization": "" */
+#define GRPC_MDELEM_AUTHORIZATION_EMPTY (grpc_static_mdelem_manifested()[22])
+/* "cache-control": "" */
+#define GRPC_MDELEM_CACHE_CONTROL_EMPTY (grpc_static_mdelem_manifested()[23])
+/* "content-disposition": "" */
+#define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY \
+  (grpc_static_mdelem_manifested()[24])
+/* "content-encoding": "" */
+#define GRPC_MDELEM_CONTENT_ENCODING_EMPTY (grpc_static_mdelem_manifested()[25])
+/* "content-language": "" */
+#define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY (grpc_static_mdelem_manifested()[26])
+/* "content-length": "" */
+#define GRPC_MDELEM_CONTENT_LENGTH_EMPTY (grpc_static_mdelem_manifested()[27])
+/* "content-location": "" */
+#define GRPC_MDELEM_CONTENT_LOCATION_EMPTY (grpc_static_mdelem_manifested()[28])
+/* "content-range": "" */
+#define GRPC_MDELEM_CONTENT_RANGE_EMPTY (grpc_static_mdelem_manifested()[29])
+/* "content-type": "" */
+#define GRPC_MDELEM_CONTENT_TYPE_EMPTY (grpc_static_mdelem_manifested()[30])
+/* "cookie": "" */
+#define GRPC_MDELEM_COOKIE_EMPTY (grpc_static_mdelem_manifested()[31])
+/* "date": "" */
+#define GRPC_MDELEM_DATE_EMPTY (grpc_static_mdelem_manifested()[32])
+/* "etag": "" */
+#define GRPC_MDELEM_ETAG_EMPTY (grpc_static_mdelem_manifested()[33])
+/* "expect": "" */
+#define GRPC_MDELEM_EXPECT_EMPTY (grpc_static_mdelem_manifested()[34])
+/* "expires": "" */
+#define GRPC_MDELEM_EXPIRES_EMPTY (grpc_static_mdelem_manifested()[35])
+/* "from": "" */
+#define GRPC_MDELEM_FROM_EMPTY (grpc_static_mdelem_manifested()[36])
+/* "host": "" */
+#define GRPC_MDELEM_HOST_EMPTY (grpc_static_mdelem_manifested()[37])
+/* "if-match": "" */
+#define GRPC_MDELEM_IF_MATCH_EMPTY (grpc_static_mdelem_manifested()[38])
+/* "if-modified-since": "" */
+#define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY \
+  (grpc_static_mdelem_manifested()[39])
+/* "if-none-match": "" */
+#define GRPC_MDELEM_IF_NONE_MATCH_EMPTY (grpc_static_mdelem_manifested()[40])
+/* "if-range": "" */
+#define GRPC_MDELEM_IF_RANGE_EMPTY (grpc_static_mdelem_manifested()[41])
+/* "if-unmodified-since": "" */
+#define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY \
+  (grpc_static_mdelem_manifested()[42])
+/* "last-modified": "" */
+#define GRPC_MDELEM_LAST_MODIFIED_EMPTY (grpc_static_mdelem_manifested()[43])
+/* "link": "" */
+#define GRPC_MDELEM_LINK_EMPTY (grpc_static_mdelem_manifested()[44])
+/* "location": "" */
+#define GRPC_MDELEM_LOCATION_EMPTY (grpc_static_mdelem_manifested()[45])
+/* "max-forwards": "" */
+#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (grpc_static_mdelem_manifested()[46])
+/* "proxy-authenticate": "" */
+#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY \
+  (grpc_static_mdelem_manifested()[47])
+/* "proxy-authorization": "" */
+#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY \
+  (grpc_static_mdelem_manifested()[48])
+/* "range": "" */
+#define GRPC_MDELEM_RANGE_EMPTY (grpc_static_mdelem_manifested()[49])
+/* "referer": "" */
+#define GRPC_MDELEM_REFERER_EMPTY (grpc_static_mdelem_manifested()[50])
+/* "refresh": "" */
+#define GRPC_MDELEM_REFRESH_EMPTY (grpc_static_mdelem_manifested()[51])
+/* "retry-after": "" */
+#define GRPC_MDELEM_RETRY_AFTER_EMPTY (grpc_static_mdelem_manifested()[52])
+/* "server": "" */
+#define GRPC_MDELEM_SERVER_EMPTY (grpc_static_mdelem_manifested()[53])
+/* "set-cookie": "" */
+#define GRPC_MDELEM_SET_COOKIE_EMPTY (grpc_static_mdelem_manifested()[54])
+/* "strict-transport-security": "" */
+#define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
+  (grpc_static_mdelem_manifested()[55])
+/* "transfer-encoding": "" */
+#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY \
+  (grpc_static_mdelem_manifested()[56])
+/* "user-agent": "" */
+#define GRPC_MDELEM_USER_AGENT_EMPTY (grpc_static_mdelem_manifested()[57])
+/* "vary": "" */
+#define GRPC_MDELEM_VARY_EMPTY (grpc_static_mdelem_manifested()[58])
+/* "via": "" */
+#define GRPC_MDELEM_VIA_EMPTY (grpc_static_mdelem_manifested()[59])
+/* "www-authenticate": "" */
+#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (grpc_static_mdelem_manifested()[60])
+/* "grpc-status": "0" */
+#define GRPC_MDELEM_GRPC_STATUS_0 (grpc_static_mdelem_manifested()[61])
+/* "grpc-status": "1" */
+#define GRPC_MDELEM_GRPC_STATUS_1 (grpc_static_mdelem_manifested()[62])
+/* "grpc-status": "2" */
+#define GRPC_MDELEM_GRPC_STATUS_2 (grpc_static_mdelem_manifested()[63])
+/* "grpc-encoding": "identity" */
+#define GRPC_MDELEM_GRPC_ENCODING_IDENTITY (grpc_static_mdelem_manifested()[64])
+/* "grpc-encoding": "gzip" */
+#define GRPC_MDELEM_GRPC_ENCODING_GZIP (grpc_static_mdelem_manifested()[65])
+/* "grpc-encoding": "deflate" */
+#define GRPC_MDELEM_GRPC_ENCODING_DEFLATE (grpc_static_mdelem_manifested()[66])
+/* "te": "trailers" */
+#define GRPC_MDELEM_TE_TRAILERS (grpc_static_mdelem_manifested()[67])
+/* "content-type": "application/grpc" */
+#define GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC \
+  (grpc_static_mdelem_manifested()[68])
+/* ":scheme": "grpc" */
+#define GRPC_MDELEM_SCHEME_GRPC (grpc_static_mdelem_manifested()[69])
+/* ":method": "PUT" */
+#define GRPC_MDELEM_METHOD_PUT (grpc_static_mdelem_manifested()[70])
+/* "accept-encoding": "" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_EMPTY (grpc_static_mdelem_manifested()[71])
+/* "content-encoding": "identity" */
+#define GRPC_MDELEM_CONTENT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[72])
+/* "content-encoding": "gzip" */
+#define GRPC_MDELEM_CONTENT_ENCODING_GZIP (grpc_static_mdelem_manifested()[73])
+/* "lb-cost-bin": "" */
+#define GRPC_MDELEM_LB_COST_BIN_EMPTY (grpc_static_mdelem_manifested()[74])
+/* "grpc-accept-encoding": "identity" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[75])
+/* "grpc-accept-encoding": "deflate" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE \
+  (grpc_static_mdelem_manifested()[76])
+/* "grpc-accept-encoding": "identity,deflate" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE \
+  (grpc_static_mdelem_manifested()[77])
+/* "grpc-accept-encoding": "gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP \
+  (grpc_static_mdelem_manifested()[78])
+/* "grpc-accept-encoding": "identity,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[79])
+/* "grpc-accept-encoding": "deflate,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[80])
+/* "grpc-accept-encoding": "identity,deflate,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[81])
+/* "accept-encoding": "identity" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[82])
+/* "accept-encoding": "gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP (grpc_static_mdelem_manifested()[83])
+/* "accept-encoding": "identity,gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[84])
+
+grpc_mdelem grpc_static_mdelem_for_static_strings(intptr_t a, intptr_t b);
+typedef enum {
+  GRPC_BATCH_PATH,
+  GRPC_BATCH_METHOD,
+  GRPC_BATCH_STATUS,
+  GRPC_BATCH_AUTHORITY,
+  GRPC_BATCH_SCHEME,
+  GRPC_BATCH_TE,
+  GRPC_BATCH_GRPC_MESSAGE,
+  GRPC_BATCH_GRPC_STATUS,
+  GRPC_BATCH_GRPC_PAYLOAD_BIN,
+  GRPC_BATCH_GRPC_ENCODING,
+  GRPC_BATCH_GRPC_ACCEPT_ENCODING,
+  GRPC_BATCH_GRPC_SERVER_STATS_BIN,
+  GRPC_BATCH_GRPC_TAGS_BIN,
+  GRPC_BATCH_GRPC_TRACE_BIN,
+  GRPC_BATCH_CONTENT_TYPE,
+  GRPC_BATCH_CONTENT_ENCODING,
+  GRPC_BATCH_ACCEPT_ENCODING,
+  GRPC_BATCH_GRPC_INTERNAL_ENCODING_REQUEST,
+  GRPC_BATCH_GRPC_INTERNAL_STREAM_ENCODING_REQUEST,
+  GRPC_BATCH_USER_AGENT,
+  GRPC_BATCH_HOST,
+  GRPC_BATCH_GRPC_PREVIOUS_RPC_ATTEMPTS,
+  GRPC_BATCH_GRPC_RETRY_PUSHBACK_MS,
+  GRPC_BATCH_X_ENDPOINT_LOAD_METRICS_BIN,
+  GRPC_BATCH_CALLOUTS_COUNT
+} grpc_metadata_batch_callouts_index;
+
+typedef union {
+  struct grpc_linked_mdelem* array[GRPC_BATCH_CALLOUTS_COUNT];
+  struct {
+    struct grpc_linked_mdelem* path;
+    struct grpc_linked_mdelem* method;
+    struct grpc_linked_mdelem* status;
+    struct grpc_linked_mdelem* authority;
+    struct grpc_linked_mdelem* scheme;
+    struct grpc_linked_mdelem* te;
+    struct grpc_linked_mdelem* grpc_message;
+    struct grpc_linked_mdelem* grpc_status;
+    struct grpc_linked_mdelem* grpc_payload_bin;
+    struct grpc_linked_mdelem* grpc_encoding;
+    struct grpc_linked_mdelem* grpc_accept_encoding;
+    struct grpc_linked_mdelem* grpc_server_stats_bin;
+    struct grpc_linked_mdelem* grpc_tags_bin;
+    struct grpc_linked_mdelem* grpc_trace_bin;
+    struct grpc_linked_mdelem* content_type;
+    struct grpc_linked_mdelem* content_encoding;
+    struct grpc_linked_mdelem* accept_encoding;
+    struct grpc_linked_mdelem* grpc_internal_encoding_request;
+    struct grpc_linked_mdelem* grpc_internal_stream_encoding_request;
+    struct grpc_linked_mdelem* user_agent;
+    struct grpc_linked_mdelem* host;
+    struct grpc_linked_mdelem* grpc_previous_rpc_attempts;
+    struct grpc_linked_mdelem* grpc_retry_pushback_ms;
+    struct grpc_linked_mdelem* x_endpoint_load_metrics_bin;
+  } named;
+} grpc_metadata_batch_callouts;
+
+#define GRPC_BATCH_INDEX_OF(slice)                                             \
+  (GRPC_IS_STATIC_METADATA_STRING((slice)) &&                                  \
+           reinterpret_cast<grpc_core::StaticSliceRefcount*>((slice).refcount) \
+                   ->index <= static_cast<uint32_t>(GRPC_BATCH_CALLOUTS_COUNT) \
+       ? static_cast<grpc_metadata_batch_callouts_index>(                      \
+             reinterpret_cast<grpc_core::StaticSliceRefcount*>(                \
+                 (slice).refcount)                                             \
+                 ->index)                                                      \
+       : GRPC_BATCH_CALLOUTS_COUNT)
+
+extern const uint8_t grpc_static_accept_encoding_metadata[8];
+#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table()                         \
+                         [grpc_static_accept_encoding_metadata[(algs)]] \
+                             .data(),                                   \
+                    GRPC_MDELEM_STORAGE_STATIC))
+
+extern const uint8_t grpc_static_accept_stream_encoding_metadata[4];
+#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table()                                \
+                         [grpc_static_accept_stream_encoding_metadata[(algs)]] \
+                             .data(),                                          \
+                    GRPC_MDELEM_STORAGE_STATIC))
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_conversion.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_conversion.h
new file mode 100644
index 0000000..487f00c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_conversion.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H
+#define GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+/* Conversion of grpc status codes to http2 error codes (for RST_STREAM) */
+grpc_http2_error_code grpc_status_to_http2_error(grpc_status_code status);
+grpc_status_code grpc_http2_error_to_grpc_status(grpc_http2_error_code error,
+                                                 grpc_millis deadline);
+
+/* Conversion of HTTP status codes (:status) to grpc status codes */
+grpc_status_code grpc_http2_status_to_grpc_status(int status);
+int grpc_status_to_http2_status(grpc_status_code status);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_metadata.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_metadata.h
new file mode 100644
index 0000000..24022c0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/status_metadata.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+grpc_status_code grpc_get_status_code_from_metadata(grpc_mdelem md);
+
+/** Get a grpc_mdelem of grpc-status: X where X is the numeric value of
+    status_code.
+
+    The returned elem is owned by the caller. */
+grpc_mdelem grpc_get_reffed_status_elem_slowpath(int status_code);
+inline grpc_mdelem grpc_get_reffed_status_elem(int status_code) {
+  switch (status_code) {
+    case 0:
+      return GRPC_MDELEM_GRPC_STATUS_0;
+    case 1:
+      return GRPC_MDELEM_GRPC_STATUS_1;
+    case 2:
+      return GRPC_MDELEM_GRPC_STATUS_2;
+  }
+  return grpc_get_reffed_status_elem_slowpath(status_code);
+}
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/timeout_encoding.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/timeout_encoding.h
new file mode 100644
index 0000000..c87ff39
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/timeout_encoding.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+#define GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+#define GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE 10
+
+/* Encode/decode timeouts to the GRPC over HTTP/2 format;
+   encoding may round up arbitrarily. If the timeout is larger than about 1157
+   days, it will be capped and "99999999S" will be sent on the wire. */
+void grpc_http2_encode_timeout(grpc_millis timeout, char* buffer);
+int grpc_http2_decode_timeout(const grpc_slice& text, grpc_millis* timeout);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport.h
new file mode 100644
index 0000000..1837451
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport.h	
@@ -0,0 +1,455 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata_batch.h"
+
+/* Minimum and maximum protocol accepted versions. */
+#define GRPC_PROTOCOL_VERSION_MAX_MAJOR 2
+#define GRPC_PROTOCOL_VERSION_MAX_MINOR 1
+#define GRPC_PROTOCOL_VERSION_MIN_MAJOR 2
+#define GRPC_PROTOCOL_VERSION_MIN_MINOR 1
+
+/* forward declarations */
+
+typedef struct grpc_transport grpc_transport;
+
+/* grpc_stream doesn't actually exist. It's used as a typesafe
+   opaque pointer for whatever data the transport wants to track
+   for a stream. */
+typedef struct grpc_stream grpc_stream;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_stream_refcount;
+
+typedef struct grpc_stream_refcount {
+  grpc_core::RefCount refs;
+  grpc_closure destroy;
+#ifndef NDEBUG
+  const char* object_type;
+#endif
+  grpc_slice_refcount slice_refcount;
+} grpc_stream_refcount;
+
+#ifndef NDEBUG
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int initial_refs,
+                          grpc_iomgr_cb_func cb, void* cb_arg,
+                          const char* object_type);
+#define GRPC_STREAM_REF_INIT(rc, ir, cb, cb_arg, objtype) \
+  grpc_stream_ref_init(rc, ir, cb, cb_arg, objtype)
+#else
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int initial_refs,
+                          grpc_iomgr_cb_func cb, void* cb_arg);
+#define GRPC_STREAM_REF_INIT(rc, ir, cb, cb_arg, objtype) \
+  do {                                                    \
+    grpc_stream_ref_init(rc, ir, cb, cb_arg);             \
+    (void)(objtype);                                      \
+  } while (0)
+#endif
+
+#ifndef NDEBUG
+inline void grpc_stream_ref(grpc_stream_refcount* refcount,
+                            const char* reason) {
+  if (grpc_trace_stream_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%s %p:%p REF %s", refcount->object_type, refcount,
+            refcount->destroy.cb_arg, reason);
+  }
+  refcount->refs.RefNonZero(DEBUG_LOCATION, reason);
+}
+#else
+inline void grpc_stream_ref(grpc_stream_refcount* refcount) {
+  refcount->refs.RefNonZero();
+}
+#endif
+
+void grpc_stream_destroy(grpc_stream_refcount* refcount);
+
+#ifndef NDEBUG
+inline void grpc_stream_unref(grpc_stream_refcount* refcount,
+                              const char* reason) {
+  if (grpc_trace_stream_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%s %p:%p UNREF %s", refcount->object_type, refcount,
+            refcount->destroy.cb_arg, reason);
+  }
+  if (GPR_UNLIKELY(refcount->refs.Unref(DEBUG_LOCATION, reason))) {
+    grpc_stream_destroy(refcount);
+  }
+}
+#else
+inline void grpc_stream_unref(grpc_stream_refcount* refcount) {
+  if (GPR_UNLIKELY(refcount->refs.Unref())) {
+    grpc_stream_destroy(refcount);
+  }
+}
+#endif
+
+/* Wrap a buffer that is owned by some stream object into a slice that shares
+   the same refcount */
+grpc_slice grpc_slice_from_stream_owned_buffer(grpc_stream_refcount* refcount,
+                                               void* buffer, size_t length);
+
+struct grpc_transport_one_way_stats {
+  uint64_t framing_bytes = 0;
+  uint64_t data_bytes = 0;
+  uint64_t header_bytes = 0;
+};
+
+struct grpc_transport_stream_stats {
+  grpc_transport_one_way_stats incoming;
+  grpc_transport_one_way_stats outgoing;
+};
+
+void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats* from,
+                                       grpc_transport_one_way_stats* to);
+
+void grpc_transport_move_stats(grpc_transport_stream_stats* from,
+                               grpc_transport_stream_stats* to);
+
+// This struct (which is present in both grpc_transport_stream_op_batch
+// and grpc_transport_op_batch) is a convenience to allow filters or
+// transports to schedule a closure related to a particular batch without
+// having to allocate memory.  The general pattern is to initialize the
+// closure with the callback arg set to the batch and extra_arg set to
+// whatever state is associated with the handler (e.g., the call element
+// or the transport stream object).
+//
+// Note that this can only be used by the current handler of a given
+// batch on the way down the stack (i.e., whichever filter or transport is
+// currently handling the batch).  Once a filter or transport passes control
+// of the batch to the next handler, it cannot depend on the contents of
+// this struct anymore, because the next handler may reuse it.
+struct grpc_handler_private_op_data {
+  void* extra_arg = nullptr;
+  grpc_closure closure;
+  grpc_handler_private_op_data() { memset(&closure, 0, sizeof(closure)); }
+};
+
+typedef struct grpc_transport_stream_op_batch_payload
+    grpc_transport_stream_op_batch_payload;
+
+/* Transport stream op: a set of operations to perform on a transport
+   against a single stream */
+struct grpc_transport_stream_op_batch {
+  grpc_transport_stream_op_batch()
+      : send_initial_metadata(false),
+        send_trailing_metadata(false),
+        send_message(false),
+        recv_initial_metadata(false),
+        recv_message(false),
+        recv_trailing_metadata(false),
+        cancel_stream(false),
+        is_traced(false) {}
+
+  /** Should be scheduled when all of the non-recv operations in the batch
+      are complete.
+
+      The recv ops (recv_initial_metadata, recv_message, and
+      recv_trailing_metadata) each have their own callbacks.  If a batch
+      contains both recv ops and non-recv ops, on_complete should be
+      scheduled as soon as the non-recv ops are complete, regardless of
+      whether or not the recv ops are complete.  If a batch contains
+      only recv ops, on_complete can be null. */
+  grpc_closure* on_complete = nullptr;
+
+  /** Values for the stream op (fields set are determined by flags above) */
+  grpc_transport_stream_op_batch_payload* payload = nullptr;
+
+  /** Send initial metadata to the peer, from the provided metadata batch. */
+  bool send_initial_metadata : 1;
+
+  /** Send trailing metadata to the peer, from the provided metadata batch. */
+  bool send_trailing_metadata : 1;
+
+  /** Send message data to the peer, from the provided byte stream. */
+  bool send_message : 1;
+
+  /** Receive initial metadata from the stream, into provided metadata batch. */
+  bool recv_initial_metadata : 1;
+
+  /** Receive message data from the stream, into provided byte stream. */
+  bool recv_message : 1;
+
+  /** Receive trailing metadata from the stream, into provided metadata batch.
+   */
+  bool recv_trailing_metadata : 1;
+
+  /** Cancel this stream with the provided error */
+  bool cancel_stream : 1;
+
+  /** Is this stream traced */
+  bool is_traced : 1;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * current handler of the op */
+
+  grpc_handler_private_op_data handler_private;
+};
+
+struct grpc_transport_stream_op_batch_payload {
+  explicit grpc_transport_stream_op_batch_payload(
+      grpc_call_context_element* context)
+      : context(context) {}
+  ~grpc_transport_stream_op_batch_payload() {
+    // We don't really own `send_message`, so release ownership and let the
+    // owner clean the data.
+    send_message.send_message.release();
+  }
+
+  struct {
+    grpc_metadata_batch* send_initial_metadata = nullptr;
+    /** Iff send_initial_metadata != NULL, flags associated with
+        send_initial_metadata: a bitfield of GRPC_INITIAL_METADATA_xxx */
+    uint32_t send_initial_metadata_flags = 0;
+    // If non-NULL, will be set by the transport to the peer string (a char*).
+    // The transport retains ownership of the string.
+    // Note: This pointer may be used by the transport after the
+    // send_initial_metadata op is completed.  It must remain valid
+    // until the call is destroyed.
+    gpr_atm* peer_string = nullptr;
+  } send_initial_metadata;
+
+  struct {
+    grpc_metadata_batch* send_trailing_metadata = nullptr;
+  } send_trailing_metadata;
+
+  struct {
+    // The transport (or a filter that decides to return a failure before
+    // the op gets down to the transport) takes ownership.
+    // The batch's on_complete will not be called until after the byte
+    // stream is orphaned.
+    grpc_core::OrphanablePtr<grpc_core::ByteStream> send_message;
+    // Set by the transport if the stream has been closed for writes. If this
+    // is set and send message op is present, we set the operation to be a
+    // failure without sending a cancel OP down the stack. This is so that the
+    // status of the call does not get overwritten by the Cancel OP, which would
+    // be especially problematic if we had received a valid status from the
+    // server.
+    // For send_initial_metadata, it is fine for the status to be overwritten
+    // because at that point, the client will not have received a status.
+    // For send_trailing_metadata, we might overwrite the status if we have
+    // non-zero metadata to send. This is fine because the API does not allow
+    // the client to send trailing metadata.
+    bool stream_write_closed = false;
+  } send_message;
+
+  struct {
+    grpc_metadata_batch* recv_initial_metadata = nullptr;
+    // Flags are used only on the server side.  If non-null, will be set to
+    // a bitfield of the GRPC_INITIAL_METADATA_xxx macros (e.g., to
+    // indicate if the call is idempotent).
+    uint32_t* recv_flags = nullptr;
+    /** Should be enqueued when initial metadata is ready to be processed. */
+    grpc_closure* recv_initial_metadata_ready = nullptr;
+    // If not NULL, will be set to true if trailing metadata is
+    // immediately available.  This may be a signal that we received a
+    // Trailers-Only response.
+    bool* trailing_metadata_available = nullptr;
+    // If non-NULL, will be set by the transport to the peer string (a char*).
+    // The transport retains ownership of the string.
+    // Note: This pointer may be used by the transport after the
+    // recv_initial_metadata op is completed.  It must remain valid
+    // until the call is destroyed.
+    gpr_atm* peer_string = nullptr;
+  } recv_initial_metadata;
+
+  struct {
+    // Will be set by the transport to point to the byte stream
+    // containing a received message.
+    // Will be NULL if trailing metadata is received instead of a message.
+    grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message = nullptr;
+    /** Should be enqueued when one message is ready to be processed. */
+    grpc_closure* recv_message_ready = nullptr;
+  } recv_message;
+
+  struct {
+    grpc_metadata_batch* recv_trailing_metadata = nullptr;
+    grpc_transport_stream_stats* collect_stats = nullptr;
+    /** Should be enqueued when trailing metadata is ready to be processed. */
+    grpc_closure* recv_trailing_metadata_ready = nullptr;
+  } recv_trailing_metadata;
+
+  /** Forcefully close this stream.
+      The HTTP2 semantics should be:
+      - server side: if cancel_error has GRPC_ERROR_INT_GRPC_STATUS, and
+        trailing metadata has not been sent, send trailing metadata with status
+        and message from cancel_error (use grpc_error_get_status) followed by
+        a RST_STREAM with error=GRPC_CHTTP2_NO_ERROR to force a full close
+      - at all other times: use grpc_error_get_status to get a status code, and
+        convert to a HTTP2 error code using
+        grpc_chttp2_grpc_status_to_http2_error. Send a RST_STREAM with this
+        error. */
+  struct {
+    // Error contract: the transport that gets this op must cause cancel_error
+    //                 to be unref'ed after processing it
+    grpc_error* cancel_error = GRPC_ERROR_NONE;
+  } cancel_stream;
+
+  /* Indexes correspond to grpc_context_index enum values */
+  grpc_call_context_element* context;
+};
+
+/** Transport op: a set of operations to perform on a transport as a whole */
+typedef struct grpc_transport_op {
+  /** Called when processing of this op is done. */
+  grpc_closure* on_consumed = nullptr;
+  /** connectivity monitoring - set connectivity_state to NULL to unsubscribe */
+  grpc_core::OrphanablePtr<grpc_core::ConnectivityStateWatcherInterface>
+      start_connectivity_watch;
+  grpc_connectivity_state start_connectivity_watch_state = GRPC_CHANNEL_IDLE;
+  grpc_core::ConnectivityStateWatcherInterface* stop_connectivity_watch =
+      nullptr;
+  /** should the transport be disconnected
+   * Error contract: the transport that gets this op must cause
+   *                 disconnect_with_error to be unref'ed after processing it */
+  grpc_error* disconnect_with_error = nullptr;
+  /** what should the goaway contain?
+   * Error contract: the transport that gets this op must cause
+   *                 goaway_error to be unref'ed after processing it */
+  grpc_error* goaway_error = nullptr;
+  /** set the callback for accepting new streams;
+      this is a permanent callback, unlike the other one-shot closures.
+      If true, the callback is set to set_accept_stream_fn, with its
+      user_data argument set to set_accept_stream_user_data */
+  bool set_accept_stream = false;
+  void (*set_accept_stream_fn)(void* user_data, grpc_transport* transport,
+                               const void* server_data) = nullptr;
+  void* set_accept_stream_user_data = nullptr;
+  /** add this transport to a pollset */
+  grpc_pollset* bind_pollset = nullptr;
+  /** add this transport to a pollset_set */
+  grpc_pollset_set* bind_pollset_set = nullptr;
+  /** send a ping, if either on_initiate or on_ack is not NULL */
+  struct {
+    /** Ping may be delayed by the transport, on_initiate callback will be
+        called when the ping is actually being sent. */
+    grpc_closure* on_initiate = nullptr;
+    /** Called when the ping ack is received */
+    grpc_closure* on_ack = nullptr;
+  } send_ping;
+  // If true, will reset the channel's connection backoff.
+  bool reset_connect_backoff = false;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * transport implementation */
+
+  grpc_handler_private_op_data handler_private;
+} grpc_transport_op;
+
+/* Returns the amount of memory required to store a grpc_stream for this
+   transport */
+size_t grpc_transport_stream_size(grpc_transport* transport);
+
+/* Initialize transport data for a stream.
+
+   Returns 0 on success, any other (transport-defined) value for failure.
+   May assume that stream contains all-zeros.
+
+   Arguments:
+     transport   - the transport on which to create this stream
+     stream      - a pointer to uninitialized memory to initialize
+     server_data - either NULL for a client initiated stream, or a pointer
+                   supplied from the accept_stream callback function */
+int grpc_transport_init_stream(grpc_transport* transport, grpc_stream* stream,
+                               grpc_stream_refcount* refcount,
+                               const void* server_data,
+                               grpc_core::Arena* arena);
+
+void grpc_transport_set_pops(grpc_transport* transport, grpc_stream* stream,
+                             grpc_polling_entity* pollent);
+
+/* Destroy transport data for a stream.
+
+   Requires: a recv_batch with final_state == GRPC_STREAM_CLOSED has been
+   received by the up-layer. Must not be called in the same call stack as
+   recv_frame.
+
+   Arguments:
+     transport - the transport on which to create this stream
+     stream    - the grpc_stream to destroy (memory is still owned by the
+                 caller, but any child memory must be cleaned up) */
+void grpc_transport_destroy_stream(grpc_transport* transport,
+                                   grpc_stream* stream,
+                                   grpc_closure* then_schedule_closure);
+
+void grpc_transport_stream_op_batch_finish_with_failure(
+    grpc_transport_stream_op_batch* op, grpc_error* error,
+    grpc_core::CallCombiner* call_combiner);
+
+char* grpc_transport_stream_op_batch_string(grpc_transport_stream_op_batch* op);
+char* grpc_transport_op_string(grpc_transport_op* op);
+
+/* Send a batch of operations on a transport
+
+   Takes ownership of any objects contained in ops.
+
+   Arguments:
+     transport - the transport on which to initiate the stream
+     stream    - the stream on which to send the operations. This must be
+                 non-NULL and previously initialized by the same transport.
+     op        - a grpc_transport_stream_op_batch specifying the op to perform
+   */
+void grpc_transport_perform_stream_op(grpc_transport* transport,
+                                      grpc_stream* stream,
+                                      grpc_transport_stream_op_batch* op);
+
+void grpc_transport_perform_op(grpc_transport* transport,
+                               grpc_transport_op* op);
+
+/* Send a ping on a transport
+
+   Calls cb with user data when a response is received. */
+void grpc_transport_ping(grpc_transport* transport, grpc_closure* cb);
+
+/* Advise peer of pending connection termination. */
+void grpc_transport_goaway(grpc_transport* transport, grpc_status_code status,
+                           grpc_slice debug_data);
+
+/* Destroy the transport */
+void grpc_transport_destroy(grpc_transport* transport);
+
+/* Get the endpoint used by \a transport */
+grpc_endpoint* grpc_transport_get_endpoint(grpc_transport* transport);
+
+/* Allocate a grpc_transport_op, and preconfigure the on_consumed closure to
+   \a on_consumed and then delete the returned transport op */
+grpc_transport_op* grpc_make_transport_op(grpc_closure* on_consumed);
+/* Allocate a grpc_transport_stream_op_batch, and preconfigure the on_consumed
+   closure
+   to \a on_consumed and then delete the returned transport op */
+grpc_transport_stream_op_batch* grpc_make_transport_stream_op(
+    grpc_closure* on_consumed);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport_impl.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport_impl.h
new file mode 100644
index 0000000..526cc1b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/transport/transport_impl.h	
@@ -0,0 +1,71 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport.h"
+
+typedef struct grpc_transport_vtable {
+  /* Memory required for a single stream element - this is allocated by upper
+     layers and initialized by the transport */
+  size_t sizeof_stream; /* = sizeof(transport stream) */
+
+  /* name of this transport implementation */
+  const char* name;
+
+  /* implementation of grpc_transport_init_stream */
+  int (*init_stream)(grpc_transport* self, grpc_stream* stream,
+                     grpc_stream_refcount* refcount, const void* server_data,
+                     grpc_core::Arena* arena);
+
+  /* implementation of grpc_transport_set_pollset */
+  void (*set_pollset)(grpc_transport* self, grpc_stream* stream,
+                      grpc_pollset* pollset);
+
+  /* implementation of grpc_transport_set_pollset */
+  void (*set_pollset_set)(grpc_transport* self, grpc_stream* stream,
+                          grpc_pollset_set* pollset_set);
+
+  /* implementation of grpc_transport_perform_stream_op */
+  void (*perform_stream_op)(grpc_transport* self, grpc_stream* stream,
+                            grpc_transport_stream_op_batch* op);
+
+  /* implementation of grpc_transport_perform_op */
+  void (*perform_op)(grpc_transport* self, grpc_transport_op* op);
+
+  /* implementation of grpc_transport_destroy_stream */
+  void (*destroy_stream)(grpc_transport* self, grpc_stream* stream,
+                         grpc_closure* then_schedule_closure);
+
+  /* implementation of grpc_transport_destroy */
+  void (*destroy)(grpc_transport* self);
+
+  /* implementation of grpc_transport_get_endpoint */
+  grpc_endpoint* (*get_endpoint)(grpc_transport* self);
+} grpc_transport_vtable;
+
+/* an instance of a grpc transport */
+struct grpc_transport {
+  /* pointer to a vtable defining operations on this transport */
+  const grpc_transport_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/lib/uri/uri_parser.h b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/uri/uri_parser.h
new file mode 100644
index 0000000..b6771bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/lib/uri/uri_parser.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_URI_URI_PARSER_H
+#define GRPC_CORE_LIB_URI_URI_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+typedef struct {
+  char* scheme;
+  char* authority;
+  char* path;
+  char* query;
+  /** Query substrings separated by '&' */
+  char** query_parts;
+  /** Number of elements in \a query_parts and \a query_parts_values */
+  size_t num_query_parts;
+  /** Split each query part by '='. NULL if not present. */
+  char** query_parts_values;
+  char* fragment;
+} grpc_uri;
+
+/** parse a uri, return NULL on failure */
+grpc_uri* grpc_uri_parse(const char* uri_text, bool suppress_errors);
+
+/** return the part of a query string after the '=' in "?key=xxx&...", or NULL
+ * if key is not present */
+const char* grpc_uri_get_query_arg(const grpc_uri* uri, const char* key);
+
+/** destroy a uri */
+void grpc_uri_destroy(grpc_uri* uri);
+
+#endif /* GRPC_CORE_LIB_URI_URI_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/crypt/gsec.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/crypt/gsec.h
new file mode 100644
index 0000000..4d65caa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/crypt/gsec.h	
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H
+#define GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <grpc/grpc.h>
+
+struct iovec {
+  void* iov_base;
+  size_t iov_len;
+};
+
+/**
+ * A gsec interface for AEAD encryption schemes. The API is thread-compatible.
+ * Each implementation of this interface should specify supported values for
+ * key, nonce, and tag lengths.
+ */
+
+/* Key, nonce, and tag length in bytes */
+const size_t kAesGcmNonceLength = 12;
+const size_t kAesGcmTagLength = 16;
+const size_t kAes128GcmKeyLength = 16;
+const size_t kAes256GcmKeyLength = 32;
+
+// The first 32 bytes are used as a KDF key and the remaining 12 bytes are used
+// to mask the nonce.
+const size_t kAes128GcmRekeyKeyLength = 44;
+
+typedef struct gsec_aead_crypter gsec_aead_crypter;
+
+/**
+ * The gsec_aead_crypter is an API for different AEAD implementations such as
+ * AES_GCM. It encapsulates all AEAD-related operations in the format of
+ * V-table that stores pointers to functions implementing those operations.
+ * It also provides helper functions to wrap each of those function pointers.
+ *
+ * A typical usage of this object would be:
+ *
+ *------------------------------------------------------------------------------
+ * // Declare a gsec_aead_crypter object, and create and assign an instance
+ * // of specific AEAD implementation e.g., AES_GCM to it. We assume both
+ * // key and nonce contain cryptographically secure random bytes, and the key
+ * // can be derived from an upper-layer application.
+ * gsec_aead_crypter* crypter;
+ * char* error_in_creation;
+ * // User can populate the message with any 100 bytes data.
+ * uint8_t* message = gpr_malloc(100);
+ * grpc_status_code creation_status = gsec_aes_gcm_aead_crypter_create(key,
+ *                                                      kAes128GcmKeyLength,
+ *                                                      kAesGcmNonceLength,
+ *                                                      kAesGcmTagLength,
+ *                                                      &crypter,
+ *                                                      false,
+ *                                                      0
+ *                                                      &error_in_creation);
+ *
+ * if (creation_status == GRPC_STATUS_OK) {
+ *    // Allocate a correct amount of memory to hold a ciphertext.
+ *    size_t clength = 0;
+ *    gsec_aead_crypter_max_ciphertext_and_tag_length(crypter, 100, &clength,
+ *                                                    nullptr);
+ *    uint8_t* ciphertext = gpr_malloc(clength);
+ *
+ *    // Perform encryption
+ *    size_t num_encrypted_bytes = 0;
+ *    char* error_in_encryption = nullptr;
+ *    grpc_status_code status = gsec_aead_crypter_encrypt(crypter, nonce,
+ *                                                        kAesGcmNonceLength,
+ *                                                        nullptr, 0, message,
+ *                                                        100, ciphertext,
+ *                                                        clength,
+ *                                                        &num_encrypted_bytes,
+ *                                                        &error_in_encryption);
+ * if (status == GRPC_STATUS_OK) {
+ *       // Allocate a correct amount of memory to hold a plaintext.
+ *       size_t plength = 0;
+ *       gsec_aead_crypter_max_plaintext_length(crypter, num_encrypted_bytes,
+ *                                              &plength, nullptr);
+ *       uint8_t* plaintext = gpr_malloc(plength);
+ *
+ *       // Perform decryption.
+ *       size_t num_decrypted_bytes = 0;
+ *       char* error_in_decryption = nullptr;
+ *       status = gsec_aead_crypter_decrypt(crypter, nonce,
+ *                                          kAesGcmNonceLength, nullptr, 0,
+ *                                          ciphertext, num_encrypted_bytes,
+ *                                          plaintext, plength,
+ *                                          &num_decrypted_bytes,
+ *                                          &error_in_decryption);
+ *       if (status != GRPC_STATUS_OK) {
+ *         fprintf(stderr, "AEAD decrypt operation failed with error code:"
+ *                         "%d, message: %s\n", status, error_in_decryption);
+ *       }
+ *       ...
+ *       gpr_free(plaintext);
+ *       gpr_free(error_in_decryption);
+ *    } else {
+ *        fprintf(stderr, "AEAD encrypt operation failed with error code:"
+ *                        "%d, message: %s\n", status, error_in_encryption);
+ *    }
+ *    ...
+ *    gpr_free(ciphertext);
+ *    gpr_free(error_in_encryption);
+ * } else {
+ *   fprintf(stderr, "Creation of AEAD crypter instance failed with error code:"
+ *                   "%d, message: %s\n", creation_status, error_in_creation);
+ * }
+ *
+ * // Destruct AEAD crypter instance.
+ * if (creation_status == GRPC_STATUS_OK) {
+ *   gsec_aead_crypter_destroy(crypter);
+ * }
+ * gpr_free(error_in_creation);
+ * gpr_free(message);
+ * -----------------------------------------------------------------------------
+ */
+
+/* V-table for gsec AEAD operations */
+typedef struct gsec_aead_crypter_vtable {
+  grpc_status_code (*encrypt_iovec)(
+      gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+      const struct iovec* aad_vec, size_t aad_vec_length,
+      const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+      struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+      char** error_details);
+  grpc_status_code (*decrypt_iovec)(
+      gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+      const struct iovec* aad_vec, size_t aad_vec_length,
+      const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+      struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+      char** error_details);
+  grpc_status_code (*max_ciphertext_and_tag_length)(
+      const gsec_aead_crypter* crypter, size_t plaintext_length,
+      size_t* max_ciphertext_and_tag_length_to_return, char** error_details);
+  grpc_status_code (*max_plaintext_length)(
+      const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+      size_t* max_plaintext_length_to_return, char** error_details);
+  grpc_status_code (*nonce_length)(const gsec_aead_crypter* crypter,
+                                   size_t* nonce_length_to_return,
+                                   char** error_details);
+  grpc_status_code (*key_length)(const gsec_aead_crypter* crypter,
+                                 size_t* key_length_to_return,
+                                 char** error_details);
+  grpc_status_code (*tag_length)(const gsec_aead_crypter* crypter,
+                                 size_t* tag_length_to_return,
+                                 char** error_details);
+  void (*destruct)(gsec_aead_crypter* crypter);
+} gsec_aead_crypter_vtable;
+
+/* Main struct for gsec interface */
+struct gsec_aead_crypter {
+  const struct gsec_aead_crypter_vtable* vtable;
+};
+
+/**
+ * This method performs an AEAD encrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad: buffer containing data that needs to be authenticated but not
+ *   encrypted with its size equal to aad_length.
+ * - aad_length: size of aad buffer, which should be zero if the buffer is
+ *   nullptr.
+ * - plaintext: buffer containing data that needs to be both encrypted and
+ *   authenticated with its size equal to plaintext_length.
+ * - plaintext_length: size of plaintext buffer, which should be zero if
+ *   plaintext is nullptr.
+ * - ciphertext_and_tag: buffer that will contain ciphertext and tags the method
+ *   produced. The buffer should not overlap the plaintext buffer, and pointers
+ *   to those buffers should not be equal. Also if the ciphertext+tag buffer is
+ *   nullptr, the plaintext_length should be zero.
+ * - ciphertext_and_tag_length: size of ciphertext+tag buffer, which should be
+ *   at least as long as the one returned from method
+ *   gsec_aead_crypter_max_ciphertext_and_tag_length.
+ * - bytes_written: the actual number of bytes written to the ciphertext+tag
+ *   buffer. If bytes_written is nullptr, the plaintext_length should be zero.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of encryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+grpc_status_code gsec_aead_crypter_encrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* plaintext,
+    size_t plaintext_length, uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, size_t* bytes_written,
+    char** error_details);
+
+/**
+ * This method performs an AEAD encrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad_vec: an iovec array containing data that needs to be authenticated but
+ *   not encrypted.
+ * - aad_vec_length: the array length of aad_vec.
+ * - plaintext_vec: an iovec array containing data that needs to be both
+ *   encrypted and authenticated.
+ * - plaintext_vec_length: the array length of plaintext_vec.
+ * - ciphertext_vec: an iovec containing a ciphertext buffer. The buffer should
+ *   not overlap the plaintext buffer.
+ * - ciphertext_bytes_written: the actual number of bytes written to
+ *   ciphertext_vec.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of encryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+grpc_status_code gsec_aead_crypter_encrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+    struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+    char** error_details);
+
+/**
+ * This method performs an AEAD decrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad: buffer containing data that needs to be authenticated only.
+ * - aad_length: size of aad buffer, which should be zero if the buffer is
+ *   nullptr.
+ * - ciphertext_and_tag: buffer containing ciphertext and tag.
+ * - ciphertext_and_tag_length: length of ciphertext and tag. It should be zero
+ *   if any of plaintext, ciphertext_and_tag, or bytes_written is nullptr. Also,
+ *   ciphertext_and_tag_length should be at least as large as the tag length set
+ *   at AEAD crypter instance construction time.
+ * - plaintext: buffer containing decrypted and authenticated data the method
+ *   produced. The buffer should not overlap with the ciphertext+tag buffer, and
+ *   pointers to those buffers should not be equal.
+ * - plaintext_length: size of plaintext buffer, which should be at least as
+ *   long as the one returned from gsec_aead_crypter_max_plaintext_length
+ *   method.
+ * - bytes_written: the actual number of bytes written to the plaintext
+ *   buffer.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of decryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_decrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, uint8_t* plaintext,
+    size_t plaintext_length, size_t* bytes_written, char** error_details);
+
+/**
+ * This method performs an AEAD decrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad_vec: an iovec array containing data that needs to be authenticated but
+ *   not encrypted.
+ * - aad_vec_length: the array length of aad_vec.
+ * - ciphertext_vec: an iovec array containing the ciphertext and tag.
+ * - ciphertext_vec_length: the array length of ciphertext_vec.
+ * - plaintext_vec: an iovec containing a plaintext buffer. The buffer should
+ *   not overlap the ciphertext buffer.
+ * - plaintext_bytes_written: the actual number of bytes written to
+ *   plaintext_vec.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of decryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_decrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+    struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+    char** error_details);
+
+/**
+ * This method computes the size of ciphertext+tag buffer that must be passed to
+ * gsec_aead_crypter_encrypt function to ensure correct encryption of a
+ * plaintext. The actual size of ciphertext+tag written to the buffer could be
+ * smaller.
+ *
+ * - crypter: AEAD crypter instance.
+ * - plaintext_length: length of plaintext.
+ * - max_ciphertext_and_tag_length_to_return: the size of ciphertext+tag buffer
+ *   the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_max_ciphertext_and_tag_length(
+    const gsec_aead_crypter* crypter, size_t plaintext_length,
+    size_t* max_ciphertext_and_tag_length_to_return, char** error_details);
+
+/**
+ * This method computes the size of plaintext buffer that must be passed to
+ * gsec_aead_crypter_decrypt function to ensure correct decryption of a
+ * ciphertext. The actual size of plaintext written to the buffer could be
+ * smaller.
+ *
+ * - crypter: AEAD crypter instance.
+ * - ciphertext_and_tag_length: length of ciphertext and tag.
+ * - max_plaintext_length_to_return: the size of plaintext buffer the method
+ *   returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_max_plaintext_length(
+    const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+    size_t* max_plaintext_length_to_return, char** error_details);
+
+/**
+ * This method returns a valid size of nonce array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce_length_to_return: the length of nonce array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_nonce_length(
+    const gsec_aead_crypter* crypter, size_t* nonce_length_to_return,
+    char** error_details);
+
+/**
+ * This method returns a valid size of key array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - key_length_to_return: the length of key array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_key_length(const gsec_aead_crypter* crypter,
+                                              size_t* key_length_to_return,
+                                              char** error_details);
+/**
+ * This method returns a valid size of tag array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - tag_length_to_return: the length of tag array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_tag_length(const gsec_aead_crypter* crypter,
+                                              size_t* tag_length_to_return,
+                                              char** error_details);
+
+/**
+ * This method destroys an AEAD crypter instance by de-allocating all of its
+ * occupied memory.
+ *
+ * - crypter: AEAD crypter instance that needs to be destroyed.
+ */
+void gsec_aead_crypter_destroy(gsec_aead_crypter* crypter);
+
+/**
+ * This method creates an AEAD crypter instance of AES-GCM encryption scheme
+ * which supports 16 and 32 bytes long keys, 12 and 16 bytes long nonces, and
+ * 16 bytes long tags. It should be noted that once the lengths of key, nonce,
+ * and tag are determined at construction time, they cannot be modified later.
+ *
+ * - key: buffer containing a key which is binded with AEAD crypter instance.
+ * - key_length: length of a key in bytes, which should be 44 if rekeying is
+ *   enabled and 16 or 32 otherwise.
+ * - nonce_length: length of a nonce in bytes, which should be either 12 or 16.
+ * - tag_length: length of a tag in bytes, which should be always 16.
+ * - rekey: enable nonce-based rekeying and nonce-masking.
+ * - crypter: address of AES_GCM crypter instance returned from the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of instance creation, it stores the address of instance at
+ * crypter. Otherwise, it returns an error status code together with its details
+ * specified in error_details.
+ */
+grpc_status_code gsec_aes_gcm_aead_crypter_create(const uint8_t* key,
+                                                  size_t key_length,
+                                                  size_t nonce_length,
+                                                  size_t tag_length, bool rekey,
+                                                  gsec_aead_crypter** crypter,
+                                                  char** error_details);
+
+#endif /* GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_counter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_counter.h
new file mode 100644
index 0000000..d705638
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_counter.h	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <grpc/grpc.h>
+
+/* Main struct for a crypter counter managed within seal/unseal operations. */
+typedef struct alts_counter {
+  size_t size;
+  size_t overflow_size;
+  unsigned char* counter;
+} alts_counter;
+
+/**
+ * This method creates and initializes an alts_counter instance.
+ *
+ * - is_client: a flag indicating if the alts_counter instance will be used
+ *   at client (is_client = true) or server (is_client = false) side.
+ * - counter_size: size of buffer holding the counter value.
+ * - overflow_size: overflow size in bytes. The counter instance can be used
+ *   to produce at most 2^(overflow_size*8) frames.
+ * - crypter_counter: an alts_counter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_counter_create(bool is_client, size_t counter_size,
+                                     size_t overflow_size,
+                                     alts_counter** crypter_counter,
+                                     char** error_details);
+
+/**
+ * This method increments the internal counter.
+ *
+ * - crypter_counter: an alts_counter instance.
+ * - is_overflow: after incrementing the internal counter, if an overflow
+ *   occurs, is_overflow is set to true, and no further calls to
+ *   alts_counter_increment() should be made. Otherwise, is_overflow is set to
+ *   false.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_counter_increment(alts_counter* crypter_counter,
+                                        bool* is_overflow,
+                                        char** error_details);
+
+/**
+ * This method returns the size of counter buffer.
+ *
+ * - crypter_counter: an alts_counter instance.
+ */
+size_t alts_counter_get_size(alts_counter* crypter_counter);
+
+/**
+ * This method returns the counter buffer.
+ *
+ * - crypter_counter: an alts_counter instance.
+ */
+unsigned char* alts_counter_get_counter(alts_counter* crypter_counter);
+
+/**
+ * This method de-allocates all memory allocated to an alts_coutner instance.
+ * - crypter_counter: an alts_counter instance.
+ */
+void alts_counter_destroy(alts_counter* crypter_counter);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_crypter.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_crypter.h
new file mode 100644
index 0000000..3140778
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_crypter.h	
@@ -0,0 +1,255 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+/**
+ * An alts_crypter interface for an ALTS record protocol providing
+ * seal/unseal functionality. The interface is thread-compatible.
+ */
+
+typedef struct alts_crypter alts_crypter;
+
+/**
+ * A typical usage of the interface would be
+ *------------------------------------------------------------------------------
+ * // Perform a seal operation. We assume the gsec_aead_crypter instance -
+ * // client_aead_crypter is created beforehand with a 16-byte key and 12-byte
+ * // nonce length.
+ *
+ * alts_crypter* client = nullptr;
+ * char* client_error_in_creation = nullptr;
+ * unsigned char* data = nullptr;
+ * grpc_status_code client_status =
+ *                 alts_seal_crypter_create(client_aead_crypter, 1, 5, &client,
+ *                                          &client_error_in_creation);
+ * if (client_status == GRPC_STATUS_OK) {
+ *   size_t data_size = 100;
+ *   size_t num_overhead_bytes = alts_crypter_num_overhead_bytes(client);
+ *   size_t data_allocated_size = data_size + num_overhead_bytes;
+ *   data = gpr_malloc(data_allocated_size);
+ *   char* client_error_in_seal = nullptr;
+ *   // Client performs a seal operation.
+ *   client_status = alts_crypter_process_in_place(client, data,
+ *                                                 data_allocated_size,
+ *                                                 &data_size,
+ *                                                 &client_error_in_seal);
+ *   if (client_status != GRPC_STATUS_OK) {
+ *     fprintf(stderr, "seal operation failed with error code:"
+ *                     "%d, message: %s\n", client_status,
+ *                      client_error_in_seal);
+ *    }
+ *    gpr_free(client_error_in_seal);
+ * } else {
+ *     fprintf(stderr, "alts_crypter instance creation failed with error"
+ *                     "code: %d, message: %s\n", client_status,
+ *                      client_error_in_creation);
+ * }
+ *
+ * ...
+ *
+ * gpr_free(client_error_in_creation);
+ * alts_crypter_destroy(client);
+ *
+ * ...
+ *
+ * // Perform an unseal operation. We assume the gsec_aead_crypter instance -
+ * // server_aead_crypter is created beforehand with a 16-byte key and 12-byte
+ * // nonce length. The key used in the creation of gsec_aead_crypter instances
+ * // at server and client sides should be identical.
+ *
+ * alts_crypter* server = nullptr;
+ * char* server_error_in_creation = nullptr;
+ * grpc_status_code server_status =
+ *               alts_unseal_crypter_create(server_aead_crypter, 0, 5, &server,
+ *                                          &server_error_in_creation);
+ * if (server_status == GRPC_STATUS_OK) {
+ *   size_t num_overhead_bytes = alts_crypter_num_overhead_bytes(server);
+ *   size_t data_size = 100 + num_overhead_bytes;
+ *   size_t data_allocated_size = data_size;
+ *   char* server_error_in_unseal = nullptr;
+ *   // Server performs an unseal operation.
+ *   server_status = alts_crypter_process_in_place(server, data,
+ *                                                 data_allocated_size,
+ *                                                 &data_size,
+ *                                                 &server_error_in_unseal);
+ *   if (server_status != GRPC_STATUS_OK) {
+ *     fprintf(stderr, "unseal operation failed with error code:"
+ *                     "%d, message: %s\n", server_status,
+ *                      server_error_in_unseal);
+ *   }
+ *   gpr_free(server_error_in_unseal);
+ * } else {
+ *     fprintf(stderr, "alts_crypter instance creation failed with error"
+ *                     "code: %d, message: %s\n", server_status,
+ *                      server_error_in_creation);
+ * }
+ *
+ * ...
+ *
+ * gpr_free(data);
+ * gpr_free(server_error_in_creation);
+ * alts_crypter_destroy(server);
+ *
+ * ...
+ *------------------------------------------------------------------------------
+ */
+
+/* V-table for alts_crypter operations */
+typedef struct alts_crypter_vtable {
+  size_t (*num_overhead_bytes)(const alts_crypter* crypter);
+  grpc_status_code (*process_in_place)(alts_crypter* crypter,
+                                       unsigned char* data,
+                                       size_t data_allocated_size,
+                                       size_t data_size, size_t* output_size,
+                                       char** error_details);
+  void (*destruct)(alts_crypter* crypter);
+} alts_crypter_vtable;
+
+/* Main struct for alts_crypter interface */
+struct alts_crypter {
+  const alts_crypter_vtable* vtable;
+};
+
+/**
+ * This method gets the number of overhead bytes needed for sealing data that
+ * is the difference in size between the protected and raw data. The counter
+ * value used in a seal or unseal operation is locally maintained (not sent or
+ * received from the other peer) and therefore, will not be counted as part of
+ * overhead bytes.
+ *
+ * - crypter: an alts_crypter instance.
+ *
+ * On success, the method returns the number of overhead bytes. Otherwise, it
+ * returns zero.
+ *
+ */
+size_t alts_crypter_num_overhead_bytes(const alts_crypter* crypter);
+
+/**
+ * This method performs either a seal or an unseal operation depending on the
+ * alts_crypter instance - crypter passed to the method. If the crypter is
+ * an instance implementing a seal operation, the method will perform a seal
+ * operation. That is, it seals raw data and stores the result in-place, and the
+ * memory allocated for data must be at least data_length +
+ * alts_crypter_num_overhead_bytes(). If the crypter is an instance
+ * implementing an unseal operation, the method will perform an unseal
+ * operation. That is, it unseals protected data and stores the result in-place.
+ * The size of unsealed data will be data_length -
+ * alts_crypter_num_overhead_bytes(). Integrity tag will be verified during
+ * the unseal operation, and if verification fails, the data will be wiped.
+ * The counters used in both seal and unseal operations are managed internally.
+ *
+ * - crypter: an alts_crypter instance.
+ * - data: if the method performs a seal operation, the data represents raw data
+ *   that needs to be sealed. It also plays the role of buffer to hold the
+ *   protected data as a result of seal. If the method performs an unseal
+ *   operation, the data represents protected data that needs to be unsealed. It
+ *   also plays the role of buffer to hold raw data as a result of unseal.
+ * - data_allocated_size: the size of data buffer. The parameter is used to
+ *   check whether the result of either seal or unseal can be safely written to
+ *   the data buffer.
+ * - data_size: if the method performs a seal operation, data_size
+ *   represents the size of raw data that needs to be sealed, and if the method
+ *   performs an unseal operation, data_size represents the size of protected
+ *   data that needs to be unsealed.
+ * - output_size: size of data written to the data buffer after a seal or an
+ *   unseal operation.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_crypter_process_in_place(
+    alts_crypter* crypter, unsigned char* data, size_t data_allocated_size,
+    size_t data_size, size_t* output_size, char** error_details);
+
+/**
+ * This method creates an alts_crypter instance to be used to perform a seal
+ * operation, given a gsec_aead_crypter instance and a flag indicating if the
+ * created instance will be used at the client or server side. It takes
+ * ownership of gsec_aead_crypter instance.
+ *
+ * - gc: a gsec_aead_crypter instance used to perform AEAD encryption.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - crypter: an alts_crypter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns GRPC_STATUS_OK.
+ * Otherwise, it returns an error status code along with its details specified
+ * in error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_seal_crypter_create(gsec_aead_crypter* gc, bool is_client,
+                                          size_t overflow_size,
+                                          alts_crypter** crypter,
+                                          char** error_details);
+
+/**
+ * This method creates an alts_crypter instance used to perform an unseal
+ * operation, given a gsec_aead_crypter instance and a flag indicating if the
+ * created instance will be used at the client or server side. It takes
+ * ownership of gsec_aead_crypter instance.
+ *
+ * - gc: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - crypter: an alts_crypter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns GRPC_STATUS_OK.
+ * Otherwise, it returns an error status code along with its details specified
+ * in error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_unseal_crypter_create(gsec_aead_crypter* gc,
+                                            bool is_client,
+                                            size_t overflow_size,
+                                            alts_crypter** crypter,
+                                            char** error_details);
+
+/**
+ * This method destroys an alts_crypter instance by de-allocating all of its
+ * occupied memory. A gsec_aead_crypter instance passed in at alts_crypter
+ * instance creation time will be destroyed in this method.
+ *
+ * - crypter: an alts_crypter instance.
+ */
+void alts_crypter_destroy(alts_crypter* crypter);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_frame_protector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_frame_protector.h
new file mode 100644
index 0000000..321bffa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_frame_protector.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+typedef struct alts_frame_protector alts_frame_protector;
+
+/**
+ * TODO: Add a parameter to the interface to support the use of
+ * different record protocols within a frame protector.
+ *
+ * This method creates a frame protector.
+ *
+ * - key: a symmetric key used to seal/unseal frames.
+ * - key_size: the size of symmetric key.
+ * - is_client: a flag indicating if the frame protector will be used at client
+ *   (is_client = true) or server (is_client = false) side.
+ * - is_rekey: a flag indicating if the frame protector will use an AEAD with
+ *   rekeying.
+ * - max_protected_frame_size: an in/out parameter indicating max frame size
+ *   to be used by the frame protector. If it is nullptr, the default frame
+ *   size will be used. Otherwise, the provided frame size will be adjusted (if
+ *   not falling into a valid frame range) and used.
+ * - self: a pointer to the frame protector returned from the method.
+ *
+ * This method returns TSI_OK on success and TSI_INTERNAL_ERROR otherwise.
+ */
+tsi_result alts_create_frame_protector(const uint8_t* key, size_t key_size,
+                                       bool is_client, bool is_rekey,
+                                       size_t* max_protected_frame_size,
+                                       tsi_frame_protector** self);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h
new file mode 100644
index 0000000..682a8f7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+
+/**
+ * This file contains common implementation that will be used in both seal and
+ * unseal operations.
+ */
+
+/**
+ * Main struct for alts_record_protocol_crypter that will be used in both
+ * seal and unseal operations.
+ */
+typedef struct alts_record_protocol_crypter {
+  alts_crypter base;
+  gsec_aead_crypter* crypter;
+  alts_counter* ctr;
+} alts_record_protocol_crypter;
+
+/**
+ * This method performs input sanity checks on a subset of inputs to
+ * alts_crypter_process_in_place() for both seal and unseal operations.
+ *
+ * - rp_crypter: an alts_record_protocol_crypter instance.
+ * - data: it represents raw data that needs to be sealed in a seal operation or
+ *   protected data that needs to be unsealed in an unseal operation.
+ * - output_size: size of data written to the data buffer after a seal or
+ *   unseal operation.
+ * - error_details: a buffer containing an error message if any of checked
+ *   inputs is nullptr. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code input_sanity_check(
+    const alts_record_protocol_crypter* rp_crypter, const unsigned char* data,
+    size_t* output_size, char** error_details);
+
+/**
+ * This method increments the counter within an alts_record_protocol_crypter
+ * instance.
+ *
+ * - rp_crypter: an alts_record_protocol_crypter instance.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly or the counter is wrapped. It is legal to pass nullptr
+ *   into error_details and otherwise, the parameter should be freed with
+ *   gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code increment_counter(alts_record_protocol_crypter* rp_crypter,
+                                   char** error_details);
+
+/**
+ * This method creates an alts_crypter instance, and populates the fields
+ * that are common to both seal and unseal operations.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption. The
+ *   function does not take ownership of crypter.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns alts_record_protocol_crypter
+ * instance. Otherwise, it returns nullptr with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+alts_record_protocol_crypter* alts_crypter_create_common(
+    gsec_aead_crypter* crypter, bool is_client, size_t overflow_size,
+    char** error_details);
+
+/**
+ * For the following two methods, please refer to the corresponding API in
+ * alts_crypter.h for detailed specifications.
+ */
+size_t alts_record_protocol_crypter_num_overhead_bytes(const alts_crypter* c);
+
+void alts_record_protocol_crypter_destruct(alts_crypter* c);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/frame_handler.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/frame_handler.h
new file mode 100644
index 0000000..a703ff4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/frame_protector/frame_handler.h	
@@ -0,0 +1,236 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+const size_t kFrameMessageType = 0x06;
+const size_t kFrameLengthFieldSize = 4;
+const size_t kFrameMessageTypeFieldSize = 4;
+const size_t kFrameMaxSize = 1024 * 1024;
+const size_t kFrameHeaderSize =
+    kFrameLengthFieldSize + kFrameMessageTypeFieldSize;
+
+/**
+ * Implementation of frame reader and frame writer. All APIs in the
+ * header are thread-compatible.
+ */
+
+/**
+ * Main struct for a frame writer. It reads frames from an input buffer, and
+ * writes the contents as raw bytes. It does not own the input buffer.
+ */
+typedef struct alts_frame_writer {
+  const unsigned char* input_buffer;
+  unsigned char header_buffer[kFrameHeaderSize];
+  size_t input_bytes_written;
+  size_t header_bytes_written;
+  size_t input_size;
+} alts_frame_writer;
+
+/**
+ * Main struct for a frame reader. It reads raw bytes and puts the framed
+ * result into an output buffer. It does not own the output buffer.
+ */
+typedef struct alts_frame_reader {
+  unsigned char* output_buffer;
+  unsigned char header_buffer[kFrameHeaderSize];
+  size_t header_bytes_read;
+  size_t output_bytes_read;
+  size_t bytes_remaining;
+} alts_frame_reader;
+
+/**
+ * This method creates a frame writer instance and initializes its internal
+ * states.
+ */
+alts_frame_writer* alts_create_frame_writer();
+
+/**
+ * This method resets internal states of a frame writer and prepares to write
+ * a single frame. It does not take ownership of payload_buffer.
+ * The payload_buffer must outlive the writer.
+ *
+ * - writer: a frame writer instance.
+ * - buffer: a buffer storing full payload data to be framed.
+ * - length: size of payload data.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_reset_frame_writer(alts_frame_writer* writer,
+                             const unsigned char* buffer, size_t length);
+
+/**
+ * This method writes up to bytes_size bytes of a frame to output.
+ *
+ * - writer: a frame writer instance.
+ * - output: an output buffer used to store the frame.
+ * - bytes_size: an in/out parameter that stores the size of output buffer
+ *   before the call, and gets written the number of frame bytes written to the
+ *   buffer.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_write_frame_bytes(alts_frame_writer* writer, unsigned char* output,
+                            size_t* bytes_size);
+
+/**
+ * This method checks if a reset can be called to write a new frame. It returns
+ * true if it's the first time to frame a payload, or the current frame has
+ * been finished processing. It returns false if it's not ready yet to start a
+ * new frame (e.g., more payload data needs to be accumulated to process the
+ * current frame).
+ *
+ * if (alts_is_frame_writer_done(writer)) {
+ *   // a new frame can be written, call reset.
+ *   alts_reset_frame_writer(writer, payload_buffer, payload_size);
+ * } else {
+ *   // accumulate more payload data until a full frame can be written.
+ * }
+ *
+ * - writer: a frame writer instance.
+ */
+bool alts_is_frame_writer_done(alts_frame_writer* writer);
+
+/**
+ * This method returns the number of bytes left to write before a complete frame
+ * is formed.
+ *
+ * - writer: a frame writer instance.
+ */
+size_t alts_get_num_writer_bytes_remaining(alts_frame_writer* writer);
+
+/**
+ * This method destroys a frame writer instance.
+ *
+ * - writer: a frame writer instance.
+ */
+void alts_destroy_frame_writer(alts_frame_writer* writer);
+
+/**
+ * This method creates a frame reader instance and initializes its internal
+ * states.
+ */
+alts_frame_reader* alts_create_frame_reader();
+
+/**
+ * This method resets internal states of a frame reader (including setting its
+ * output_buffer with buffer), and prepares to write processed bytes to
+ * an output_buffer. It does not take ownership of buffer. The buffer must
+ * outlive reader.
+ *
+ * - reader: a frame reader instance.
+ * - buffer: an output buffer used to store deframed results.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_reset_frame_reader(alts_frame_reader* reader, unsigned char* buffer);
+
+/**
+ * This method processes up to the number of bytes given in bytes_size. It may
+ * choose not to process all the bytes, if, for instance, more bytes are
+ * given to the method than required to complete the current frame.
+ *
+ * - reader: a frame reader instance.
+ * - bytes: a buffer that stores data to be processed.
+ * - bytes_size: an in/out parameter that stores the size of bytes before the
+ *   call and gets written the number of bytes processed.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_read_frame_bytes(alts_frame_reader* reader,
+                           const unsigned char* bytes, size_t* bytes_size);
+
+/**
+ * This method checks if a frame length has been read.
+ *
+ * - reader: a frame reader instance.
+ *
+ * The method returns true if a frame length has been read and false otherwise.
+ */
+bool alts_has_read_frame_length(alts_frame_reader* reader);
+
+/**
+ * This method returns the number of bytes the frame reader intends to write.
+ * It may only be called if alts_has_read_frame_length() returns true.
+ *
+ * - reader: a frame reader instance.
+ */
+size_t alts_get_reader_bytes_remaining(alts_frame_reader* reader);
+
+/**
+ * This method resets output_buffer but does not otherwise modify other internal
+ * states of a frame reader instance. After being set, the new output_buffer
+ * will hold the deframed payload held by the original output_buffer. It does
+ * not take ownership of buffer. The buffer must outlive the reader.
+ * To distinguish between two reset methods on a frame reader,
+ *
+ * if (alts_fh_is_frame_reader_done(reader)) {
+ *   // if buffer contains a full payload to be deframed, call reset.
+ *   alts_reset_frame_reader(reader, buffer);
+ * }
+ *
+ * // if remaining buffer space is not enough to hold a full payload
+ * if (buffer_space_remaining < alts_get_reader_bytes_remaining(reader)) {
+ *   // allocate enough space for a new buffer, copy back data processed so far,
+ *   // and call reset.
+ *   alts_reset_reader_output_buffer(reader, new_buffer).
+ * }
+ *
+ * - reader: a frame reader instance.
+ * - buffer: a buffer used to set reader's output_buffer.
+ */
+void alts_reset_reader_output_buffer(alts_frame_reader* reader,
+                                     unsigned char* buffer);
+
+/**
+ * This method checks if reset can be called to start processing a new frame.
+ * If true and reset was previously called, a full frame has been processed and
+ * the content of the frame is available in output_buffer.
+
+ * - reader: a frame reader instance.
+ */
+bool alts_is_frame_reader_done(alts_frame_reader* reader);
+
+/**
+ * This method returns output_bytes_read of a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+size_t alts_get_output_bytes_read(alts_frame_reader* reader);
+
+/**
+ * This method returns output_buffer of a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+unsigned char* alts_get_output_buffer(alts_frame_reader* reader);
+
+/**
+ * This method destroys a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+void alts_destroy_frame_reader(alts_frame_reader* reader);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_handshaker_client.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_handshaker_client.h
new file mode 100644
index 0000000..319a23c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_handshaker_client.h	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/handshaker/alts_tsi_handshaker.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#define ALTS_SERVICE_METHOD "/grpc.gcp.HandshakerService/DoHandshake"
+#define ALTS_APPLICATION_PROTOCOL "grpc"
+#define ALTS_RECORD_PROTOCOL "ALTSRP_GCM_AES128_REKEY"
+#define ALTS_HANDSHAKER_SERVICE_URL_FOR_TESTING "lame"
+
+const size_t kAltsAes128GcmRekeyKeyLength = 44;
+
+typedef struct alts_tsi_handshaker alts_tsi_handshaker;
+/**
+ * A ALTS handshaker client interface. It is used to communicate with
+ * ALTS handshaker service by scheduling a handshaker request that could be one
+ * of client_start, server_start, and next handshaker requests. All APIs in the
+ * header are thread-compatible.
+ */
+typedef struct alts_handshaker_client alts_handshaker_client;
+
+/* A function that makes the grpc call to the handshaker service. */
+typedef grpc_call_error (*alts_grpc_caller)(grpc_call* call, const grpc_op* ops,
+                                            size_t nops, grpc_closure* tag);
+
+/* V-table for ALTS handshaker client operations. */
+typedef struct alts_handshaker_client_vtable {
+  tsi_result (*client_start)(alts_handshaker_client* client);
+  tsi_result (*server_start)(alts_handshaker_client* client,
+                             grpc_slice* bytes_received);
+  tsi_result (*next)(alts_handshaker_client* client,
+                     grpc_slice* bytes_received);
+  void (*shutdown)(alts_handshaker_client* client);
+  void (*destruct)(alts_handshaker_client* client);
+} alts_handshaker_client_vtable;
+
+/**
+ * This method schedules a client_start handshaker request to ALTS handshaker
+ * service.
+ *
+ * - client: ALTS handshaker client instance.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_start_client(alts_handshaker_client* client);
+
+/**
+ * This method schedules a server_start handshaker request to ALTS handshaker
+ * service.
+ *
+ * - client: ALTS handshaker client instance.
+ * - bytes_received: bytes in out_frames returned from the peer's handshaker
+ *   response.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_start_server(alts_handshaker_client* client,
+                                               grpc_slice* bytes_received);
+
+/**
+ * This method schedules a next handshaker request to ALTS handshaker service.
+ *
+ * - client: ALTS handshaker client instance.
+ * - bytes_received: bytes in out_frames returned from the peer's handshaker
+ *   response.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_next(alts_handshaker_client* client,
+                                       grpc_slice* bytes_received);
+
+/**
+ * This method cancels previously scheduled, but yet executed handshaker
+ * requests to ALTS handshaker service. After this operation, the handshake
+ * will be shutdown, and no more handshaker requests will get scheduled.
+ *
+ * - client: ALTS handshaker client instance.
+ */
+void alts_handshaker_client_shutdown(alts_handshaker_client* client);
+
+/**
+ * This method destroys an ALTS handshaker client.
+ *
+ * - client: an ALTS handshaker client instance.
+ */
+void alts_handshaker_client_destroy(alts_handshaker_client* client);
+
+/**
+ * This method creates an ALTS handshaker client.
+ *
+ * - handshaker: ALTS TSI handshaker to which the created handshaker client
+ * belongs to.
+ * - channel: grpc channel to ALTS handshaker service.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port".
+ * - interested_parties: set of pollsets interested in this connection.
+ * - options: ALTS credentials options containing information passed from TSI
+ *   caller (e.g., rpc protocol versions)
+ * - target_name: the name of the endpoint that the channel is connecting to,
+ *   and will be used for secure naming check
+ * - grpc_cb: gRPC provided callbacks passed from TSI handshaker.
+ * - cb: callback to be executed when tsi_handshaker_next API compltes.
+ * - user_data: argument passed to cb.
+ * - vtable_for_testing: ALTS handshaker client vtable instance used for
+ *   testing purpose.
+ * - is_client: a boolean value indicating if the created handshaker client is
+ * used at the client (is_client = true) or server (is_client = false) side. It
+ * returns the created ALTS handshaker client on success, and NULL on failure.
+ */
+alts_handshaker_client* alts_grpc_handshaker_client_create(
+    alts_tsi_handshaker* handshaker, grpc_channel* channel,
+    const char* handshaker_service_url, grpc_pollset_set* interested_parties,
+    grpc_alts_credentials_options* options, const grpc_slice& target_name,
+    grpc_iomgr_cb_func grpc_cb, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, alts_handshaker_client_vtable* vtable_for_testing,
+    bool is_client);
+
+/**
+ * This method handles handshaker response returned from ALTS handshaker
+ * service. Note that the only reason the API is exposed is that it is used in
+ * alts_shared_resources.cc.
+ *
+ * - client: an ALTS handshaker client instance.
+ * - is_ok: a boolean value indicating if the handshaker response is ok to read.
+ */
+void alts_handshaker_client_handle_response(alts_handshaker_client* client,
+                                            bool is_ok);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_shared_resource.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_shared_resource.h
new file mode 100644
index 0000000..d8638e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_shared_resource.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+/**
+ * Main struct containing ALTS shared resources used when
+ * employing the dedicated completion queue and thread.
+ */
+typedef struct alts_shared_resource_dedicated {
+  grpc_core::Thread thread;
+  grpc_completion_queue* cq;
+  grpc_pollset_set* interested_parties;
+  grpc_cq_completion storage;
+  gpr_mu mu;
+  grpc_channel* channel;
+} alts_shared_resource_dedicated;
+
+/* This method returns the address of alts_shared_resource_dedicated
+ * object shared by all TSI handshakes.
+ */
+alts_shared_resource_dedicated* grpc_alts_get_shared_resource_dedicated(void);
+
+/**
+ * This method destroys the alts_shared_resource_dedicated object
+ * shared by all TSI handshakes. The application is responsible for
+ * invoking the API before calling grpc_shutdown().
+ */
+void grpc_alts_shared_resource_dedicated_shutdown();
+
+/**
+ * This method initializes the alts_shared_resource_dedicated object
+ * shared by all TSI handshakes. The application is responsible for
+ * invoking the API after calling grpc_init();
+ */
+void grpc_alts_shared_resource_dedicated_init();
+
+/**
+ * This method populates various fields of the alts_shared_resource_dedicated
+ * object shared by all TSI handshakes and start the dedicated thread.
+ * The API will be invoked by the caller in a lazy manner. That is,
+ * it will get invoked when ALTS TSI handshake occurs for the first time.
+ */
+void grpc_alts_shared_resource_dedicated_start(
+    const char* handshaker_service_url);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h
new file mode 100644
index 0000000..0c45f06
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/altscontext.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/handshaker.upb.h"
+#endif
+
+#define TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY "service_account"
+#define TSI_ALTS_CERTIFICATE_TYPE "ALTS"
+#define TSI_ALTS_RPC_VERSIONS "rpc_versions"
+#define TSI_ALTS_CONTEXT "alts_context"
+
+const size_t kTsiAltsNumOfPeerProperties = 5;
+
+typedef struct alts_tsi_handshaker alts_tsi_handshaker;
+
+/**
+ * This method creates a ALTS TSI handshaker instance.
+ *
+ * - options: ALTS credentials options containing information passed from TSI
+ *   caller (e.g., rpc protocol versions).
+ * - target_name: the name of the endpoint that the channel is connecting to,
+ *   and will be used for secure naming check.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port".
+ * - is_client: boolean value indicating if the handshaker is used at the client
+ *   (is_client = true) or server (is_client = false) side.
+ * - interested_parties: set of pollsets interested in this connection.
+ * - self: address of ALTS TSI handshaker instance to be returned from the
+ *   method.
+ *
+ * It returns TSI_OK on success and an error status code on failure. Note that
+ * if interested_parties is nullptr, a dedicated TSI thread will be created and
+ * used.
+ */
+tsi_result alts_tsi_handshaker_create(
+    const grpc_alts_credentials_options* options, const char* target_name,
+    const char* handshaker_service_url, bool is_client,
+    grpc_pollset_set* interested_parties, tsi_handshaker** self);
+
+/**
+ * This method creates an ALTS TSI handshaker result instance.
+ *
+ * - resp: data received from the handshaker service.
+ * - is_client: a boolean value indicating if the result belongs to a
+ *   client or not.
+ * - result: address of ALTS TSI handshaker result instance.
+ */
+tsi_result alts_tsi_handshaker_result_create(grpc_gcp_HandshakerResp* resp,
+                                             bool is_client,
+                                             tsi_handshaker_result** result);
+
+/**
+ * This method sets unused bytes of ALTS TSI handshaker result instance.
+ *
+ * - result: an ALTS TSI handshaker result instance.
+ * - recv_bytes: data received from the handshaker service.
+ * - bytes_consumed: size of data consumed by the handshaker service.
+ */
+void alts_tsi_handshaker_result_set_unused_bytes(tsi_handshaker_result* result,
+                                                 grpc_slice* recv_bytes,
+                                                 size_t bytes_consumed);
+
+/**
+ * This method returns a boolean value indicating if an ALTS TSI handshaker
+ * has been shutdown or not.
+ */
+bool alts_tsi_handshaker_has_shutdown(alts_tsi_handshaker* handshaker);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h
new file mode 100644
index 0000000..cb99fdc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * Unsafe, use for testing only. */
+
+alts_handshaker_client* alts_tsi_handshaker_get_client_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+bool alts_tsi_handshaker_get_has_sent_start_message_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+void alts_tsi_handshaker_set_client_vtable_for_testing(
+    alts_tsi_handshaker* handshaker, alts_handshaker_client_vtable* vtable);
+
+bool alts_tsi_handshaker_get_is_client_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+void alts_handshaker_client_set_grpc_caller_for_testing(
+    alts_handshaker_client* client, alts_grpc_caller caller);
+
+grpc_byte_buffer* alts_handshaker_client_get_send_buffer_for_testing(
+    alts_handshaker_client* client);
+
+grpc_byte_buffer** alts_handshaker_client_get_recv_buffer_addr_for_testing(
+    alts_handshaker_client* client);
+
+grpc_metadata_array* alts_handshaker_client_get_initial_metadata_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_set_recv_bytes_for_testing(
+    alts_handshaker_client* client, grpc_slice* recv_bytes);
+
+void alts_handshaker_client_check_fields_for_testing(
+    alts_handshaker_client* client, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, bool has_sent_start_message, grpc_slice* recv_bytes);
+
+void alts_handshaker_client_set_fields_for_testing(
+    alts_handshaker_client* client, alts_tsi_handshaker* handshaker,
+    tsi_handshaker_on_next_done_cb cb, void* user_data,
+    grpc_byte_buffer* recv_buffer, grpc_status_code status);
+
+void alts_handshaker_client_set_vtable_for_testing(
+    alts_handshaker_client* client, alts_handshaker_client_vtable* vtable);
+
+alts_tsi_handshaker* alts_handshaker_client_get_handshaker_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_set_cb_for_testing(
+    alts_handshaker_client* client, tsi_handshaker_on_next_done_cb cb);
+
+grpc_closure* alts_handshaker_client_get_closure_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_on_status_received_for_testing(
+    alts_handshaker_client* client, grpc_status_code status, grpc_error* error);
+
+void alts_handshaker_client_ref_for_testing(alts_handshaker_client* c);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_utils.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_utils.h
new file mode 100644
index 0000000..b044e6b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/alts_tsi_utils.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/handshaker.upb.h"
+#endif
+
+/**
+ * This method converts grpc_status_code code to the corresponding tsi_result
+ * code.
+ *
+ * - code: grpc_status_code code.
+ *
+ * It returns the converted tsi_result code.
+ */
+tsi_result alts_tsi_utils_convert_to_tsi_result(grpc_status_code code);
+
+/**
+ * This method deserializes a handshaker response returned from ALTS handshaker
+ * service.
+ *
+ * - bytes_received: data returned from ALTS handshaker service.
+ * - arena: upb arena.
+ *
+ * It returns a deserialized handshaker response on success and nullptr on
+ * failure.
+ */
+grpc_gcp_HandshakerResp* alts_tsi_utils_deserialize_response(
+    grpc_byte_buffer* resp_buffer, upb_arena* arena);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/transport_security_common_api.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/transport_security_common_api.h
new file mode 100644
index 0000000..daed937
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/handshaker/transport_security_common_api.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/transport_security_common.upb.h"
+#endif
+
+// C struct coresponding to protobuf message RpcProtocolVersions.Version
+typedef struct _grpc_gcp_RpcProtocolVersions_Version {
+  uint32_t major;
+  uint32_t minor;
+} grpc_gcp_rpc_protocol_versions_version;
+
+// C struct coresponding to protobuf message RpcProtocolVersions
+typedef struct _grpc_gcp_RpcProtocolVersions {
+  grpc_gcp_rpc_protocol_versions_version max_rpc_version;
+  grpc_gcp_rpc_protocol_versions_version min_rpc_version;
+} grpc_gcp_rpc_protocol_versions;
+
+/**
+ * This method sets the value for max_rpc_versions field of rpc protocol
+ * versions.
+ *
+ * - versions: an rpc protocol version instance.
+ * - max_major: a major version of maximum supported RPC version.
+ * - max_minor: a minor version of maximum supported RPC version.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_set_max(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t max_major,
+    uint32_t max_minor);
+
+/**
+ * This method sets the value for min_rpc_versions field of rpc protocol
+ * versions.
+ *
+ * - versions: an rpc protocol version instance.
+ * - min_major: a major version of minimum supported RPC version.
+ * - min_minor: a minor version of minimum supported RPC version.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_set_min(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t min_major,
+    uint32_t min_minor);
+
+/**
+ * This method serializes an rpc protocol version and returns serialized rpc
+ * versions in grpc slice.
+ *
+ * - versions: an rpc protocol versions instance.
+ * - slice: grpc slice where the serialized result will be written.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_rpc_protocol_versions* versions, grpc_slice* slice);
+
+/**
+ * This method serializes an rpc protocol version and returns serialized rpc
+ * versions in grpc slice.
+ *
+ * - versions: an rpc protocol versions instance.
+ * - arena: upb arena.
+ * - slice: grpc slice where the serialized result will be written.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    grpc_slice* slice);
+
+/**
+ * This method de-serializes input in grpc slice form and stores the result
+ * in rpc protocol versions.
+ *
+ * - slice: a data stream containing a serialized rpc protocol version.
+ * - versions: an rpc protocol version instance used to hold de-serialized
+ *   result.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_decode(
+    const grpc_slice& slice, grpc_gcp_rpc_protocol_versions* versions);
+
+/**
+ * Assigns value of upb RpcProtocolVersions to grpc_gcp_rpc_protocol_versions.
+ */
+void grpc_gcp_rpc_protocol_versions_assign_from_upb(
+    grpc_gcp_rpc_protocol_versions* versions,
+    const grpc_gcp_RpcProtocolVersions* value);
+
+/**
+ * Assigns value of struct grpc_gcp_rpc_protocol_versions to
+ * RpcProtocolVersions.
+ */
+void grpc_gcp_RpcProtocolVersions_assign_from_struct(
+    grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    const grpc_gcp_rpc_protocol_versions* value);
+
+/**
+ * This method performs a deep copy operation on rpc protocol versions
+ * instance.
+ *
+ * - src: rpc protocol versions instance that needs to be copied.
+ * - dst: rpc protocol versions instance that stores the copied result.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_copy(
+    const grpc_gcp_rpc_protocol_versions* src,
+    grpc_gcp_rpc_protocol_versions* dst);
+
+/**
+ * This method performs a version check between local and peer rpc protocol
+ * versions.
+ *
+ * - local_versions: local rpc protocol versions instance.
+ * - peer_versions: peer rpc protocol versions instance.
+ * - highest_common_version: an output parameter that will store the highest
+ *   common rpc protocol version both parties agreed on.
+ *
+ * The method returns true if the check passes which means both parties agreed
+ * on a common rpc protocol to use, and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_check(
+    const grpc_gcp_rpc_protocol_versions* local_versions,
+    const grpc_gcp_rpc_protocol_versions* peer_versions,
+    grpc_gcp_rpc_protocol_versions_version* highest_common_version);
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * Exposed for testing only.
+ * The method returns 0 if v1 = v2,
+ *            returns 1 if v1 > v2,
+ *            returns -1 if v1 < v2.
+ */
+int grpc_gcp_rpc_protocol_version_compare(
+    const grpc_gcp_rpc_protocol_versions_version* v1,
+    const grpc_gcp_rpc_protocol_versions_version* v2);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h
new file mode 100644
index 0000000..5456d34
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+
+/**
+ * This method creates an integrity-only alts_grpc_record_protocol instance,
+ * given a gsec_aead_crypter instance and a flag indicating if the created
+ * instance will be used at the client or server side. The ownership of
+ * gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - overflow_size: overflow size of counter in bytes.
+ * - is_client: a flag indicating if the alts_grpc_record_protocol instance will
+ *   be used at the client or server side.
+ * - is_protect: a flag indicating if the alts_grpc_record_protocol instance
+ *   will be used for protect or unprotect.
+ *-  enable_extra_copy: a flag indicating if the instance uses one-copy instead
+ *   of zero-copy in the protect operation.
+ * - rp: an alts_grpc_record_protocol instance to be returned from
+ *   the method.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_integrity_only_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, bool enable_extra_copy, alts_grpc_record_protocol** rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h
new file mode 100644
index 0000000..1e34aef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+
+/**
+ * This method creates a privacy-integrity alts_grpc_record_protocol instance,
+ * given a gsec_aead_crypter instance and a flag indicating if the created
+ * instance will be used at the client or server side. The ownership of
+ * gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - is_client: a flag indicating if the alts_grpc_record_protocol instance will
+ *   be used at the client or server side.
+ * - rp: an alts_grpc_record_protocol instance to be returned from
+ *   the method.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_privacy_integrity_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, alts_grpc_record_protocol** rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h
new file mode 100644
index 0000000..d1e433d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+/**
+ * This alts_grpc_record_protocol object protects and unprotects a single frame
+ * stored in grpc slice buffer with zero or minimized memory copy.
+ * Implementations of this object must be thread compatible.
+ */
+typedef struct alts_grpc_record_protocol alts_grpc_record_protocol;
+
+/**
+ * This methods performs protect operation on unprotected data and appends the
+ * protected frame to protected_slices. The caller needs to ensure the length
+ * of unprotected data plus the frame overhead is less than or equal to the
+ * maximum frame length. The input unprotected data slice buffer will be
+ * cleared, although the actual unprotected data bytes are not modified.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - unprotected_slices: the unprotected data to be protected.
+ * - protected_slices: slice buffer where the protected frame is appended.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_record_protocol_protect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices);
+
+/**
+ * This methods performs unprotect operation on a full frame of protected data
+ * and appends unprotected data to unprotected_slices. It is the caller's
+ * responsibility to prepare a full frame of data before calling this method.
+ * The input protected frame slice buffer will be cleared, although the actual
+ * protected data bytes are not modified.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - protected_slices: a full frame of protected data in grpc slices.
+ * - unprotected_slices: slice buffer where unprotected data is appended.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_record_protocol_unprotect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices);
+
+/**
+ * This method returns maximum allowed unprotected data size, given maximum
+ * protected frame size.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - max_protected_frame_size: maximum protected frame size.
+ *
+ * On success, the method returns the maximum allowed unprotected data size.
+ * Otherwise, it returns zero.
+ */
+size_t alts_grpc_record_protocol_max_unprotected_data_size(
+    const alts_grpc_record_protocol* self, size_t max_protected_frame_size);
+
+/**
+ * This method destroys an alts_grpc_record_protocol instance by de-allocating
+ * all of its occupied memory.
+ */
+void alts_grpc_record_protocol_destroy(alts_grpc_record_protocol* self);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h
new file mode 100644
index 0000000..43b8a4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H
+
+/**
+ * this file contains alts_grpc_record_protocol internals and internal-only
+ * helper functions. The public functions of alts_grpc_record_protocol are
+ * defined in the alts_grpc_record_protocol.h.
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+
+/* V-table for alts_grpc_record_protocol implementations.  */
+typedef struct {
+  tsi_result (*protect)(alts_grpc_record_protocol* self,
+                        grpc_slice_buffer* unprotected_slices,
+                        grpc_slice_buffer* protected_slices);
+  tsi_result (*unprotect)(alts_grpc_record_protocol* self,
+                          grpc_slice_buffer* protected_slices,
+                          grpc_slice_buffer* unprotected_slices);
+  void (*destruct)(alts_grpc_record_protocol* self);
+} alts_grpc_record_protocol_vtable;
+
+/* Main struct for alts_grpc_record_protocol implementation, shared by both
+ * integrity-only record protocol and privacy-integrity record protocol.
+ * Integrity-only record protocol has additional data elements.
+ * Privacy-integrity record protocol uses this struct directly.  */
+struct alts_grpc_record_protocol {
+  const alts_grpc_record_protocol_vtable* vtable;
+  alts_iovec_record_protocol* iovec_rp;
+  grpc_slice_buffer header_sb;
+  unsigned char* header_buf;
+  size_t header_length;
+  size_t tag_length;
+  iovec_t* iovec_buf;
+  size_t iovec_buf_length;
+};
+
+/**
+ * Converts the slices of input sb into iovec_t's and puts the result into
+ * rp->iovec_buf. Note that the actual data are not copied, only
+ * pointers and lengths are copied.
+ */
+void alts_grpc_record_protocol_convert_slice_buffer_to_iovec(
+    alts_grpc_record_protocol* rp, const grpc_slice_buffer* sb);
+
+/**
+ * Copies bytes from slice buffer to destination buffer. Caller is responsible
+ * for allocating enough memory of destination buffer. This method is used for
+ * copying frame header and tag in case they are stored in multiple slices.
+ */
+void alts_grpc_record_protocol_copy_slice_buffer(const grpc_slice_buffer* src,
+                                                 unsigned char* dst);
+
+/**
+ * This method returns an iovec object pointing to the frame header stored in
+ * rp->header_sb. If the frame header is stored in multiple slices,
+ * this method will copy the bytes in rp->header_sb to
+ * rp->header_buf, and return an iovec object pointing to
+ * rp->header_buf.
+ */
+iovec_t alts_grpc_record_protocol_get_header_iovec(
+    alts_grpc_record_protocol* rp);
+
+/**
+ * Initializes an alts_grpc_record_protocol object, given a gsec_aead_crypter
+ * instance, the overflow size of the counter in bytes, a flag indicating if the
+ * object is used for client or server side, a flag indicating if it is used for
+ * integrity-only or privacy-integrity mode, and a flag indicating if it is for
+ * protect or unprotect. The ownership of gsec_aead_crypter object is
+ * transferred to the alts_grpc_record_protocol object.
+ */
+tsi_result alts_grpc_record_protocol_init(alts_grpc_record_protocol* rp,
+                                          gsec_aead_crypter* crypter,
+                                          size_t overflow_size, bool is_client,
+                                          bool is_integrity_only,
+                                          bool is_protect);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h
new file mode 100644
index 0000000..0b7d1bf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h	
@@ -0,0 +1,199 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+constexpr size_t kZeroCopyFrameMessageType = 0x06;
+constexpr size_t kZeroCopyFrameLengthFieldSize = 4;
+constexpr size_t kZeroCopyFrameMessageTypeFieldSize = 4;
+constexpr size_t kZeroCopyFrameHeaderSize =
+    kZeroCopyFrameLengthFieldSize + kZeroCopyFrameMessageTypeFieldSize;
+
+// Limit k on number of frames such that at most 2^(8 * k) frames can be sent.
+constexpr size_t kAltsRecordProtocolRekeyFrameLimit = 8;
+constexpr size_t kAltsRecordProtocolFrameLimit = 5;
+
+/* An implementation of alts record protocol. The API is thread-compatible. */
+
+typedef struct iovec iovec_t;
+
+typedef struct alts_iovec_record_protocol alts_iovec_record_protocol;
+
+/**
+ * This method gets the length of record protocol frame header.
+ */
+size_t alts_iovec_record_protocol_get_header_length();
+
+/**
+ * This method gets the length of record protocol frame tag.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ *
+ * On success, the method returns the length of record protocol frame tag.
+ * Otherwise, it returns zero.
+ */
+size_t alts_iovec_record_protocol_get_tag_length(
+    const alts_iovec_record_protocol* rp);
+
+/**
+ * This method returns maximum allowed unprotected data size, given maximum
+ * protected frame size.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - max_protected_frame_size: maximum protected frame size.
+ *
+ * On success, the method returns the maximum allowed unprotected data size.
+ * Otherwise, it returns zero.
+ */
+size_t alts_iovec_record_protocol_max_unprotected_data_size(
+    const alts_iovec_record_protocol* rp, size_t max_protected_frame_size);
+
+/**
+ * This method performs integrity-only protect operation on a
+ * alts_iovec_record_protocol instance, i.e., compute frame header and tag. The
+ * caller needs to allocate the memory for header and tag prior to calling this
+ * method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - unprotected_vec: an iovec array containing unprotected data.
+ * - unprotected_vec_length: the array length of unprotected_vec.
+ * - header: an iovec containing the output frame header.
+ * - tag: an iovec containing the output frame tag.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_integrity_only_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details);
+
+/**
+ * This method performs integrity-only unprotect operation on a
+ * alts_iovec_record_protocol instance, i.e., verify frame header and tag.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - protected_vec: an iovec array containing protected data.
+ * - protected_vec_length: the array length of protected_vec.
+ * - header: an iovec containing the frame header.
+ * - tag: an iovec containing the frame tag.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_integrity_only_unprotect(
+    alts_iovec_record_protocol* rp, const iovec_t* protected_vec,
+    size_t protected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details);
+
+/**
+ * This method performs privacy-integrity protect operation on a
+ * alts_iovec_record_protocol instance, i.e., compute a protected frame. The
+ * caller needs to allocate the memory for the protected frame prior to calling
+ * this method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - unprotected_vec: an iovec array containing unprotected data.
+ * - unprotected_vec_length: the array length of unprotected_vec.
+ * - protected_frame: an iovec containing the output protected frame.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t protected_frame,
+    char** error_details);
+
+/**
+ * This method performs privacy-integrity unprotect operation on a
+ * alts_iovec_record_protocol instance given a full protected frame, i.e.,
+ * compute the unprotected data. The caller needs to allocated the memory for
+ * the unprotected data prior to calling this method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - header: an iovec containing the frame header.
+ * - protected_vec: an iovec array containing protected data including the tag.
+ * - protected_vec_length: the array length of protected_vec.
+ * - unprotected_data: an iovec containing the output unprotected data.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_unprotect(
+    alts_iovec_record_protocol* rp, iovec_t header,
+    const iovec_t* protected_vec, size_t protected_vec_length,
+    iovec_t unprotected_data, char** error_details);
+
+/**
+ * This method creates an alts_iovec_record_protocol instance, given a
+ * gsec_aead_crypter instance, a flag indicating if the created instance will be
+ * used at the client or server side, and a flag indicating if the created
+ * instance will be used for integrity-only mode or privacy-integrity mode. The
+ * ownership of gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - overflow_size: overflow size of counter in bytes.
+ * - is_client: a flag indicating if the alts_iovec_record_protocol instance
+ *   will be used at the client or server side.
+ * - is_integrity_only: a flag indicating if the alts_iovec_record_protocol
+ *   instance will be used for integrity-only or privacy-integrity mode.
+ * - is_protect: a flag indicating if the alts_grpc_record_protocol instance
+ *   will be used for protect or unprotect.
+ * - rp: an alts_iovec_record_protocol instance to be returned from
+ *   the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_integrity_only, bool is_protect, alts_iovec_record_protocol** rp,
+    char** error_details);
+
+/**
+ * This method destroys an alts_iovec_record_protocol instance by de-allocating
+ * all of its occupied memory. A gsec_aead_crypter instance passed in at
+ * gsec_alts_crypter instance creation time will be destroyed in this method.
+ */
+void alts_iovec_record_protocol_destroy(alts_iovec_record_protocol* rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h
new file mode 100644
index 0000000..515c27e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/transport_security_grpc.h"
+
+/**
+ * This method creates an ALTS zero-copy grpc protector.
+ *
+ * - key: a symmetric key used to seal/unseal frames.
+ * - key_size: the size of symmetric key.
+ * - is_rekey: use rekeying AEAD crypter.
+ * - is_client: a flag indicating if the protector will be used at client or
+ *   server side.
+ * - is_integrity_only: a flag indicating if the protector instance will be
+ *   used for integrity-only or privacy-integrity mode.
+ * - enable_extra_copy: a flag indicating if the protector instance does one
+ *   extra memory copy during the protect operation for integrity_only mode.
+ *   For the unprotect operation, it is still zero-copy. If application intends
+ *   to modify the data buffer after the protect operation, we can turn on this
+ *   mode to avoid integrity check failure.
+ * - max_protected_frame_size: an in/out parameter indicating max frame size
+ *   to be used by the protector. If it is nullptr, the default frame size will
+ *   be used. Otherwise, the provided frame size will be adjusted (if not
+ *   falling into a valid frame range) and used.
+ * - protector: a pointer to the zero-copy protector returned from the method.
+ *
+ * This method returns TSI_OK on success or a specific error code otherwise.
+ */
+tsi_result alts_zero_copy_grpc_protector_create(
+    const uint8_t* key, size_t key_size, bool is_rekey, bool is_client,
+    bool is_integrity_only, bool enable_extra_copy,
+    size_t* max_protected_frame_size, tsi_zero_copy_grpc_protector** protector);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/fake_transport_security.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/fake_transport_security.h
new file mode 100644
index 0000000..704d9fb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/fake_transport_security.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+/* Value for the TSI_CERTIFICATE_TYPE_PEER_PROPERTY property for FAKE certs. */
+#define TSI_FAKE_CERTIFICATE_TYPE "FAKE"
+/* Value of the TSI_SECURITY_LEVEL_PEER_PROPERTY property for FAKE certs. */
+#define TSI_FAKE_SECURITY_LEVEL "TSI_SECURITY_NONE"
+
+/* Creates a fake handshaker that will create a fake frame protector.
+
+   No cryptography is performed in these objects. They just simulate handshake
+   messages going back and forth for the handshaker and do some framing on
+   cleartext data for the protector.  */
+tsi_handshaker* tsi_create_fake_handshaker(int is_client);
+
+/* Creates a protector directly without going through the handshake phase. */
+tsi_frame_protector* tsi_create_fake_frame_protector(
+    size_t* max_protected_frame_size);
+
+/* Creates a zero-copy protector directly without going through the handshake
+ * phase. */
+tsi_zero_copy_grpc_protector* tsi_create_fake_zero_copy_grpc_protector(
+    size_t* max_protected_frame_size);
+
+#endif /* GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/grpc_shadow_boringssl.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/grpc_shadow_boringssl.h
new file mode 100644
index 0000000..4610bb7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/grpc_shadow_boringssl.h	
@@ -0,0 +1,3311 @@
+
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// This file is autogenerated from a template file. Please make
+// modifications to
+// `templates/src/objective-c/tsi/grpc_shadow_boringssl.h.template`
+// instead. This file can be regenerated from the template by running
+// `tools/buildgen/generate_projects.sh`.
+
+#ifndef GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H
+#define GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H
+
+#ifdef GRPC_SHADOW_BORINGSSL_SYMBOLS
+
+#define a2i_GENERAL_NAME GRPC_SHADOW_a2i_GENERAL_NAME
+#define a2i_ipadd GRPC_SHADOW_a2i_ipadd
+#define a2i_IPADDRESS GRPC_SHADOW_a2i_IPADDRESS
+#define a2i_IPADDRESS_NC GRPC_SHADOW_a2i_IPADDRESS_NC
+#define abi_test_bad_unwind_temporary GRPC_SHADOW_abi_test_bad_unwind_temporary
+#define abi_test_bad_unwind_wrong_register GRPC_SHADOW_abi_test_bad_unwind_wrong_register
+#define abi_test_clobber_r10 GRPC_SHADOW_abi_test_clobber_r10
+#define abi_test_clobber_r11 GRPC_SHADOW_abi_test_clobber_r11
+#define abi_test_clobber_r12 GRPC_SHADOW_abi_test_clobber_r12
+#define abi_test_clobber_r13 GRPC_SHADOW_abi_test_clobber_r13
+#define abi_test_clobber_r14 GRPC_SHADOW_abi_test_clobber_r14
+#define abi_test_clobber_r15 GRPC_SHADOW_abi_test_clobber_r15
+#define abi_test_clobber_r8 GRPC_SHADOW_abi_test_clobber_r8
+#define abi_test_clobber_r9 GRPC_SHADOW_abi_test_clobber_r9
+#define abi_test_clobber_rax GRPC_SHADOW_abi_test_clobber_rax
+#define abi_test_clobber_rbp GRPC_SHADOW_abi_test_clobber_rbp
+#define abi_test_clobber_rbx GRPC_SHADOW_abi_test_clobber_rbx
+#define abi_test_clobber_rcx GRPC_SHADOW_abi_test_clobber_rcx
+#define abi_test_clobber_rdi GRPC_SHADOW_abi_test_clobber_rdi
+#define abi_test_clobber_rdx GRPC_SHADOW_abi_test_clobber_rdx
+#define abi_test_clobber_rsi GRPC_SHADOW_abi_test_clobber_rsi
+#define abi_test_clobber_xmm0 GRPC_SHADOW_abi_test_clobber_xmm0
+#define abi_test_clobber_xmm1 GRPC_SHADOW_abi_test_clobber_xmm1
+#define abi_test_clobber_xmm10 GRPC_SHADOW_abi_test_clobber_xmm10
+#define abi_test_clobber_xmm11 GRPC_SHADOW_abi_test_clobber_xmm11
+#define abi_test_clobber_xmm12 GRPC_SHADOW_abi_test_clobber_xmm12
+#define abi_test_clobber_xmm13 GRPC_SHADOW_abi_test_clobber_xmm13
+#define abi_test_clobber_xmm14 GRPC_SHADOW_abi_test_clobber_xmm14
+#define abi_test_clobber_xmm15 GRPC_SHADOW_abi_test_clobber_xmm15
+#define abi_test_clobber_xmm2 GRPC_SHADOW_abi_test_clobber_xmm2
+#define abi_test_clobber_xmm3 GRPC_SHADOW_abi_test_clobber_xmm3
+#define abi_test_clobber_xmm4 GRPC_SHADOW_abi_test_clobber_xmm4
+#define abi_test_clobber_xmm5 GRPC_SHADOW_abi_test_clobber_xmm5
+#define abi_test_clobber_xmm6 GRPC_SHADOW_abi_test_clobber_xmm6
+#define abi_test_clobber_xmm7 GRPC_SHADOW_abi_test_clobber_xmm7
+#define abi_test_clobber_xmm8 GRPC_SHADOW_abi_test_clobber_xmm8
+#define abi_test_clobber_xmm9 GRPC_SHADOW_abi_test_clobber_xmm9
+#define abi_test_get_and_clear_direction_flag GRPC_SHADOW_abi_test_get_and_clear_direction_flag
+#define abi_test_set_direction_flag GRPC_SHADOW_abi_test_set_direction_flag
+#define abi_test_trampoline GRPC_SHADOW_abi_test_trampoline
+#define abi_test_unwind_return GRPC_SHADOW_abi_test_unwind_return
+#define abi_test_unwind_start GRPC_SHADOW_abi_test_unwind_start
+#define abi_test_unwind_stop GRPC_SHADOW_abi_test_unwind_stop
+#define ACCESS_DESCRIPTION_free GRPC_SHADOW_ACCESS_DESCRIPTION_free
+#define ACCESS_DESCRIPTION_it GRPC_SHADOW_ACCESS_DESCRIPTION_it
+#define ACCESS_DESCRIPTION_new GRPC_SHADOW_ACCESS_DESCRIPTION_new
+#define aes128gcmsiv_aes_ks GRPC_SHADOW_aes128gcmsiv_aes_ks
+#define aes128gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes128gcmsiv_aes_ks_enc_x1
+#define aes128gcmsiv_dec GRPC_SHADOW_aes128gcmsiv_dec
+#define aes128gcmsiv_ecb_enc_block GRPC_SHADOW_aes128gcmsiv_ecb_enc_block
+#define aes128gcmsiv_enc_msg_x4 GRPC_SHADOW_aes128gcmsiv_enc_msg_x4
+#define aes128gcmsiv_enc_msg_x8 GRPC_SHADOW_aes128gcmsiv_enc_msg_x8
+#define aes128gcmsiv_kdf GRPC_SHADOW_aes128gcmsiv_kdf
+#define aes256gcmsiv_aes_ks GRPC_SHADOW_aes256gcmsiv_aes_ks
+#define aes256gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes256gcmsiv_aes_ks_enc_x1
+#define aes256gcmsiv_dec GRPC_SHADOW_aes256gcmsiv_dec
+#define aes256gcmsiv_ecb_enc_block GRPC_SHADOW_aes256gcmsiv_ecb_enc_block
+#define aes256gcmsiv_enc_msg_x4 GRPC_SHADOW_aes256gcmsiv_enc_msg_x4
+#define aes256gcmsiv_enc_msg_x8 GRPC_SHADOW_aes256gcmsiv_enc_msg_x8
+#define aes256gcmsiv_kdf GRPC_SHADOW_aes256gcmsiv_kdf
+#define AES_cbc_encrypt GRPC_SHADOW_AES_cbc_encrypt
+#define AES_cfb128_encrypt GRPC_SHADOW_AES_cfb128_encrypt
+#define AES_CMAC GRPC_SHADOW_AES_CMAC
+#define AES_ctr128_encrypt GRPC_SHADOW_AES_ctr128_encrypt
+#define aes_ctr_set_key GRPC_SHADOW_aes_ctr_set_key
+#define AES_decrypt GRPC_SHADOW_AES_decrypt
+#define AES_ecb_encrypt GRPC_SHADOW_AES_ecb_encrypt
+#define AES_encrypt GRPC_SHADOW_AES_encrypt
+#define aesgcmsiv_htable6_init GRPC_SHADOW_aesgcmsiv_htable6_init
+#define aesgcmsiv_htable_init GRPC_SHADOW_aesgcmsiv_htable_init
+#define aesgcmsiv_htable_polyval GRPC_SHADOW_aesgcmsiv_htable_polyval
+#define aesgcmsiv_polyval_horner GRPC_SHADOW_aesgcmsiv_polyval_horner
+#define aes_hw_cbc_encrypt GRPC_SHADOW_aes_hw_cbc_encrypt
+#define aes_hw_ctr32_encrypt_blocks GRPC_SHADOW_aes_hw_ctr32_encrypt_blocks
+#define aes_hw_decrypt GRPC_SHADOW_aes_hw_decrypt
+#define aes_hw_ecb_encrypt GRPC_SHADOW_aes_hw_ecb_encrypt
+#define aes_hw_encrypt GRPC_SHADOW_aes_hw_encrypt
+#define aes_hw_set_decrypt_key GRPC_SHADOW_aes_hw_set_decrypt_key
+#define aes_hw_set_encrypt_key GRPC_SHADOW_aes_hw_set_encrypt_key
+#define aesni_gcm_decrypt GRPC_SHADOW_aesni_gcm_decrypt
+#define aesni_gcm_encrypt GRPC_SHADOW_aesni_gcm_encrypt
+#define aes_nohw_cbc_encrypt GRPC_SHADOW_aes_nohw_cbc_encrypt
+#define aes_nohw_ctr32_encrypt_blocks GRPC_SHADOW_aes_nohw_ctr32_encrypt_blocks
+#define aes_nohw_decrypt GRPC_SHADOW_aes_nohw_decrypt
+#define aes_nohw_encrypt GRPC_SHADOW_aes_nohw_encrypt
+#define aes_nohw_set_decrypt_key GRPC_SHADOW_aes_nohw_set_decrypt_key
+#define aes_nohw_set_encrypt_key GRPC_SHADOW_aes_nohw_set_encrypt_key
+#define AES_ofb128_encrypt GRPC_SHADOW_AES_ofb128_encrypt
+#define AES_set_decrypt_key GRPC_SHADOW_AES_set_decrypt_key
+#define AES_set_encrypt_key GRPC_SHADOW_AES_set_encrypt_key
+#define AES_unwrap_key GRPC_SHADOW_AES_unwrap_key
+#define AES_unwrap_key_padded GRPC_SHADOW_AES_unwrap_key_padded
+#define AES_wrap_key GRPC_SHADOW_AES_wrap_key
+#define AES_wrap_key_padded GRPC_SHADOW_AES_wrap_key_padded
+#define ASN1_ANY_it GRPC_SHADOW_ASN1_ANY_it
+#define ASN1_BIT_STRING_check GRPC_SHADOW_ASN1_BIT_STRING_check
+#define ASN1_BIT_STRING_free GRPC_SHADOW_ASN1_BIT_STRING_free
+#define ASN1_BIT_STRING_get_bit GRPC_SHADOW_ASN1_BIT_STRING_get_bit
+#define ASN1_BIT_STRING_it GRPC_SHADOW_ASN1_BIT_STRING_it
+#define ASN1_BIT_STRING_new GRPC_SHADOW_ASN1_BIT_STRING_new
+#define ASN1_BIT_STRING_set GRPC_SHADOW_ASN1_BIT_STRING_set
+#define ASN1_BIT_STRING_set_bit GRPC_SHADOW_ASN1_BIT_STRING_set_bit
+#define ASN1_BMPSTRING_free GRPC_SHADOW_ASN1_BMPSTRING_free
+#define ASN1_BMPSTRING_it GRPC_SHADOW_ASN1_BMPSTRING_it
+#define ASN1_BMPSTRING_new GRPC_SHADOW_ASN1_BMPSTRING_new
+#define ASN1_BOOLEAN_it GRPC_SHADOW_ASN1_BOOLEAN_it
+#define ASN1_digest GRPC_SHADOW_ASN1_digest
+#define asn1_do_adb GRPC_SHADOW_asn1_do_adb
+#define asn1_enc_free GRPC_SHADOW_asn1_enc_free
+#define asn1_enc_init GRPC_SHADOW_asn1_enc_init
+#define asn1_enc_restore GRPC_SHADOW_asn1_enc_restore
+#define asn1_enc_save GRPC_SHADOW_asn1_enc_save
+#define ASN1_ENUMERATED_free GRPC_SHADOW_ASN1_ENUMERATED_free
+#define ASN1_ENUMERATED_get GRPC_SHADOW_ASN1_ENUMERATED_get
+#define ASN1_ENUMERATED_it GRPC_SHADOW_ASN1_ENUMERATED_it
+#define ASN1_ENUMERATED_new GRPC_SHADOW_ASN1_ENUMERATED_new
+#define ASN1_ENUMERATED_set GRPC_SHADOW_ASN1_ENUMERATED_set
+#define ASN1_ENUMERATED_to_BN GRPC_SHADOW_ASN1_ENUMERATED_to_BN
+#define asn1_ex_c2i GRPC_SHADOW_asn1_ex_c2i
+#define asn1_ex_i2c GRPC_SHADOW_asn1_ex_i2c
+#define ASN1_FBOOLEAN_it GRPC_SHADOW_ASN1_FBOOLEAN_it
+#define ASN1_GENERALIZEDTIME_adj GRPC_SHADOW_ASN1_GENERALIZEDTIME_adj
+#define ASN1_GENERALIZEDTIME_check GRPC_SHADOW_ASN1_GENERALIZEDTIME_check
+#define ASN1_GENERALIZEDTIME_free GRPC_SHADOW_ASN1_GENERALIZEDTIME_free
+#define ASN1_GENERALIZEDTIME_it GRPC_SHADOW_ASN1_GENERALIZEDTIME_it
+#define ASN1_GENERALIZEDTIME_new GRPC_SHADOW_ASN1_GENERALIZEDTIME_new
+#define ASN1_GENERALIZEDTIME_print GRPC_SHADOW_ASN1_GENERALIZEDTIME_print
+#define ASN1_GENERALIZEDTIME_set GRPC_SHADOW_ASN1_GENERALIZEDTIME_set
+#define ASN1_GENERALIZEDTIME_set_string GRPC_SHADOW_ASN1_GENERALIZEDTIME_set_string
+#define asn1_generalizedtime_to_tm GRPC_SHADOW_asn1_generalizedtime_to_tm
+#define ASN1_GENERALSTRING_free GRPC_SHADOW_ASN1_GENERALSTRING_free
+#define ASN1_GENERALSTRING_it GRPC_SHADOW_ASN1_GENERALSTRING_it
+#define ASN1_GENERALSTRING_new GRPC_SHADOW_ASN1_GENERALSTRING_new
+#define ASN1_generate_nconf GRPC_SHADOW_ASN1_generate_nconf
+#define ASN1_generate_v3 GRPC_SHADOW_ASN1_generate_v3
+#define asn1_get_choice_selector GRPC_SHADOW_asn1_get_choice_selector
+#define asn1_get_field_ptr GRPC_SHADOW_asn1_get_field_ptr
+#define ASN1_get_object GRPC_SHADOW_ASN1_get_object
+#define ASN1_IA5STRING_free GRPC_SHADOW_ASN1_IA5STRING_free
+#define ASN1_IA5STRING_it GRPC_SHADOW_ASN1_IA5STRING_it
+#define ASN1_IA5STRING_new GRPC_SHADOW_ASN1_IA5STRING_new
+#define ASN1_INTEGER_cmp GRPC_SHADOW_ASN1_INTEGER_cmp
+#define ASN1_INTEGER_dup GRPC_SHADOW_ASN1_INTEGER_dup
+#define ASN1_INTEGER_free GRPC_SHADOW_ASN1_INTEGER_free
+#define ASN1_INTEGER_get GRPC_SHADOW_ASN1_INTEGER_get
+#define ASN1_INTEGER_it GRPC_SHADOW_ASN1_INTEGER_it
+#define ASN1_INTEGER_new GRPC_SHADOW_ASN1_INTEGER_new
+#define ASN1_INTEGER_set GRPC_SHADOW_ASN1_INTEGER_set
+#define ASN1_INTEGER_set_uint64 GRPC_SHADOW_ASN1_INTEGER_set_uint64
+#define ASN1_INTEGER_to_BN GRPC_SHADOW_ASN1_INTEGER_to_BN
+#define asn1_item_combine_free GRPC_SHADOW_asn1_item_combine_free
+#define ASN1_item_d2i GRPC_SHADOW_ASN1_item_d2i
+#define ASN1_item_d2i_bio GRPC_SHADOW_ASN1_item_d2i_bio
+#define ASN1_item_d2i_fp GRPC_SHADOW_ASN1_item_d2i_fp
+#define ASN1_item_digest GRPC_SHADOW_ASN1_item_digest
+#define ASN1_item_dup GRPC_SHADOW_ASN1_item_dup
+#define ASN1_item_ex_d2i GRPC_SHADOW_ASN1_item_ex_d2i
+#define ASN1_item_ex_free GRPC_SHADOW_ASN1_item_ex_free
+#define ASN1_item_ex_i2d GRPC_SHADOW_ASN1_item_ex_i2d
+#define ASN1_item_ex_new GRPC_SHADOW_ASN1_item_ex_new
+#define ASN1_item_free GRPC_SHADOW_ASN1_item_free
+#define ASN1_item_i2d GRPC_SHADOW_ASN1_item_i2d
+#define ASN1_item_i2d_bio GRPC_SHADOW_ASN1_item_i2d_bio
+#define ASN1_item_i2d_fp GRPC_SHADOW_ASN1_item_i2d_fp
+#define ASN1_item_ndef_i2d GRPC_SHADOW_ASN1_item_ndef_i2d
+#define ASN1_item_new GRPC_SHADOW_ASN1_item_new
+#define ASN1_item_pack GRPC_SHADOW_ASN1_item_pack
+#define ASN1_item_sign GRPC_SHADOW_ASN1_item_sign
+#define ASN1_item_sign_ctx GRPC_SHADOW_ASN1_item_sign_ctx
+#define ASN1_item_unpack GRPC_SHADOW_ASN1_item_unpack
+#define ASN1_item_verify GRPC_SHADOW_ASN1_item_verify
+#define ASN1_mbstring_copy GRPC_SHADOW_ASN1_mbstring_copy
+#define ASN1_mbstring_ncopy GRPC_SHADOW_ASN1_mbstring_ncopy
+#define ASN1_NULL_free GRPC_SHADOW_ASN1_NULL_free
+#define ASN1_NULL_it GRPC_SHADOW_ASN1_NULL_it
+#define ASN1_NULL_new GRPC_SHADOW_ASN1_NULL_new
+#define ASN1_OBJECT_create GRPC_SHADOW_ASN1_OBJECT_create
+#define ASN1_OBJECT_free GRPC_SHADOW_ASN1_OBJECT_free
+#define ASN1_OBJECT_it GRPC_SHADOW_ASN1_OBJECT_it
+#define ASN1_OBJECT_new GRPC_SHADOW_ASN1_OBJECT_new
+#define ASN1_object_size GRPC_SHADOW_ASN1_object_size
+#define ASN1_OCTET_STRING_cmp GRPC_SHADOW_ASN1_OCTET_STRING_cmp
+#define ASN1_OCTET_STRING_dup GRPC_SHADOW_ASN1_OCTET_STRING_dup
+#define ASN1_OCTET_STRING_free GRPC_SHADOW_ASN1_OCTET_STRING_free
+#define ASN1_OCTET_STRING_it GRPC_SHADOW_ASN1_OCTET_STRING_it
+#define ASN1_OCTET_STRING_NDEF_it GRPC_SHADOW_ASN1_OCTET_STRING_NDEF_it
+#define ASN1_OCTET_STRING_new GRPC_SHADOW_ASN1_OCTET_STRING_new
+#define ASN1_OCTET_STRING_set GRPC_SHADOW_ASN1_OCTET_STRING_set
+#define ASN1_primitive_free GRPC_SHADOW_ASN1_primitive_free
+#define ASN1_primitive_new GRPC_SHADOW_ASN1_primitive_new
+#define ASN1_PRINTABLE_free GRPC_SHADOW_ASN1_PRINTABLE_free
+#define ASN1_PRINTABLE_it GRPC_SHADOW_ASN1_PRINTABLE_it
+#define ASN1_PRINTABLE_new GRPC_SHADOW_ASN1_PRINTABLE_new
+#define ASN1_PRINTABLESTRING_free GRPC_SHADOW_ASN1_PRINTABLESTRING_free
+#define ASN1_PRINTABLESTRING_it GRPC_SHADOW_ASN1_PRINTABLESTRING_it
+#define ASN1_PRINTABLESTRING_new GRPC_SHADOW_ASN1_PRINTABLESTRING_new
+#define ASN1_PRINTABLE_type GRPC_SHADOW_ASN1_PRINTABLE_type
+#define ASN1_put_eoc GRPC_SHADOW_ASN1_put_eoc
+#define ASN1_put_object GRPC_SHADOW_ASN1_put_object
+#define asn1_refcount_dec_and_test_zero GRPC_SHADOW_asn1_refcount_dec_and_test_zero
+#define asn1_refcount_set_one GRPC_SHADOW_asn1_refcount_set_one
+#define ASN1_SEQUENCE_ANY_it GRPC_SHADOW_ASN1_SEQUENCE_ANY_it
+#define ASN1_SEQUENCE_it GRPC_SHADOW_ASN1_SEQUENCE_it
+#define ASN1_SET_ANY_it GRPC_SHADOW_ASN1_SET_ANY_it
+#define asn1_set_choice_selector GRPC_SHADOW_asn1_set_choice_selector
+#define ASN1_STRING_cmp GRPC_SHADOW_ASN1_STRING_cmp
+#define ASN1_STRING_copy GRPC_SHADOW_ASN1_STRING_copy
+#define ASN1_STRING_data GRPC_SHADOW_ASN1_STRING_data
+#define ASN1_STRING_dup GRPC_SHADOW_ASN1_STRING_dup
+#define ASN1_STRING_free GRPC_SHADOW_ASN1_STRING_free
+#define ASN1_STRING_get0_data GRPC_SHADOW_ASN1_STRING_get0_data
+#define ASN1_STRING_get_default_mask GRPC_SHADOW_ASN1_STRING_get_default_mask
+#define ASN1_STRING_length GRPC_SHADOW_ASN1_STRING_length
+#define ASN1_STRING_length_set GRPC_SHADOW_ASN1_STRING_length_set
+#define ASN1_STRING_new GRPC_SHADOW_ASN1_STRING_new
+#define ASN1_STRING_print GRPC_SHADOW_ASN1_STRING_print
+#define ASN1_STRING_print_ex GRPC_SHADOW_ASN1_STRING_print_ex
+#define ASN1_STRING_print_ex_fp GRPC_SHADOW_ASN1_STRING_print_ex_fp
+#define ASN1_STRING_set GRPC_SHADOW_ASN1_STRING_set
+#define ASN1_STRING_set0 GRPC_SHADOW_ASN1_STRING_set0
+#define ASN1_STRING_set_by_NID GRPC_SHADOW_ASN1_STRING_set_by_NID
+#define ASN1_STRING_set_default_mask GRPC_SHADOW_ASN1_STRING_set_default_mask
+#define ASN1_STRING_set_default_mask_asc GRPC_SHADOW_ASN1_STRING_set_default_mask_asc
+#define ASN1_STRING_TABLE_add GRPC_SHADOW_ASN1_STRING_TABLE_add
+#define ASN1_STRING_TABLE_cleanup GRPC_SHADOW_ASN1_STRING_TABLE_cleanup
+#define ASN1_STRING_TABLE_get GRPC_SHADOW_ASN1_STRING_TABLE_get
+#define ASN1_STRING_to_UTF8 GRPC_SHADOW_ASN1_STRING_to_UTF8
+#define ASN1_STRING_type GRPC_SHADOW_ASN1_STRING_type
+#define ASN1_STRING_type_new GRPC_SHADOW_ASN1_STRING_type_new
+#define ASN1_T61STRING_free GRPC_SHADOW_ASN1_T61STRING_free
+#define ASN1_T61STRING_it GRPC_SHADOW_ASN1_T61STRING_it
+#define ASN1_T61STRING_new GRPC_SHADOW_ASN1_T61STRING_new
+#define ASN1_tag2bit GRPC_SHADOW_ASN1_tag2bit
+#define ASN1_tag2str GRPC_SHADOW_ASN1_tag2str
+#define ASN1_TBOOLEAN_it GRPC_SHADOW_ASN1_TBOOLEAN_it
+#define ASN1_template_free GRPC_SHADOW_ASN1_template_free
+#define ASN1_template_new GRPC_SHADOW_ASN1_template_new
+#define ASN1_TIME_adj GRPC_SHADOW_ASN1_TIME_adj
+#define ASN1_TIME_check GRPC_SHADOW_ASN1_TIME_check
+#define ASN1_TIME_diff GRPC_SHADOW_ASN1_TIME_diff
+#define ASN1_TIME_free GRPC_SHADOW_ASN1_TIME_free
+#define ASN1_TIME_it GRPC_SHADOW_ASN1_TIME_it
+#define ASN1_TIME_new GRPC_SHADOW_ASN1_TIME_new
+#define ASN1_TIME_print GRPC_SHADOW_ASN1_TIME_print
+#define ASN1_TIME_set GRPC_SHADOW_ASN1_TIME_set
+#define ASN1_TIME_set_string GRPC_SHADOW_ASN1_TIME_set_string
+#define ASN1_TIME_to_generalizedtime GRPC_SHADOW_ASN1_TIME_to_generalizedtime
+#define ASN1_TYPE_cmp GRPC_SHADOW_ASN1_TYPE_cmp
+#define ASN1_TYPE_free GRPC_SHADOW_ASN1_TYPE_free
+#define ASN1_TYPE_get GRPC_SHADOW_ASN1_TYPE_get
+#define ASN1_TYPE_new GRPC_SHADOW_ASN1_TYPE_new
+#define ASN1_TYPE_set GRPC_SHADOW_ASN1_TYPE_set
+#define ASN1_TYPE_set1 GRPC_SHADOW_ASN1_TYPE_set1
+#define ASN1_UNIVERSALSTRING_free GRPC_SHADOW_ASN1_UNIVERSALSTRING_free
+#define ASN1_UNIVERSALSTRING_it GRPC_SHADOW_ASN1_UNIVERSALSTRING_it
+#define ASN1_UNIVERSALSTRING_new GRPC_SHADOW_ASN1_UNIVERSALSTRING_new
+#define ASN1_UTCTIME_adj GRPC_SHADOW_ASN1_UTCTIME_adj
+#define ASN1_UTCTIME_check GRPC_SHADOW_ASN1_UTCTIME_check
+#define ASN1_UTCTIME_cmp_time_t GRPC_SHADOW_ASN1_UTCTIME_cmp_time_t
+#define ASN1_UTCTIME_free GRPC_SHADOW_ASN1_UTCTIME_free
+#define ASN1_UTCTIME_it GRPC_SHADOW_ASN1_UTCTIME_it
+#define ASN1_UTCTIME_new GRPC_SHADOW_ASN1_UTCTIME_new
+#define ASN1_UTCTIME_print GRPC_SHADOW_ASN1_UTCTIME_print
+#define ASN1_UTCTIME_set GRPC_SHADOW_ASN1_UTCTIME_set
+#define ASN1_UTCTIME_set_string GRPC_SHADOW_ASN1_UTCTIME_set_string
+#define asn1_utctime_to_tm GRPC_SHADOW_asn1_utctime_to_tm
+#define ASN1_UTF8STRING_free GRPC_SHADOW_ASN1_UTF8STRING_free
+#define ASN1_UTF8STRING_it GRPC_SHADOW_ASN1_UTF8STRING_it
+#define ASN1_UTF8STRING_new GRPC_SHADOW_ASN1_UTF8STRING_new
+#define ASN1_VISIBLESTRING_free GRPC_SHADOW_ASN1_VISIBLESTRING_free
+#define ASN1_VISIBLESTRING_it GRPC_SHADOW_ASN1_VISIBLESTRING_it
+#define ASN1_VISIBLESTRING_new GRPC_SHADOW_ASN1_VISIBLESTRING_new
+#define AUTHORITY_INFO_ACCESS_free GRPC_SHADOW_AUTHORITY_INFO_ACCESS_free
+#define AUTHORITY_INFO_ACCESS_it GRPC_SHADOW_AUTHORITY_INFO_ACCESS_it
+#define AUTHORITY_INFO_ACCESS_new GRPC_SHADOW_AUTHORITY_INFO_ACCESS_new
+#define AUTHORITY_KEYID_free GRPC_SHADOW_AUTHORITY_KEYID_free
+#define AUTHORITY_KEYID_it GRPC_SHADOW_AUTHORITY_KEYID_it
+#define AUTHORITY_KEYID_new GRPC_SHADOW_AUTHORITY_KEYID_new
+#define BASIC_CONSTRAINTS_free GRPC_SHADOW_BASIC_CONSTRAINTS_free
+#define BASIC_CONSTRAINTS_it GRPC_SHADOW_BASIC_CONSTRAINTS_it
+#define BASIC_CONSTRAINTS_new GRPC_SHADOW_BASIC_CONSTRAINTS_new
+#define beeu_mod_inverse_vartime GRPC_SHADOW_beeu_mod_inverse_vartime
+#define BIO_append_filename GRPC_SHADOW_BIO_append_filename
+#define BIO_callback_ctrl GRPC_SHADOW_BIO_callback_ctrl
+#define BIO_clear_flags GRPC_SHADOW_BIO_clear_flags
+#define BIO_clear_retry_flags GRPC_SHADOW_BIO_clear_retry_flags
+#define bio_clear_socket_error GRPC_SHADOW_bio_clear_socket_error
+#define BIO_copy_next_retry GRPC_SHADOW_BIO_copy_next_retry
+#define BIO_ctrl GRPC_SHADOW_BIO_ctrl
+#define BIO_ctrl_get_read_request GRPC_SHADOW_BIO_ctrl_get_read_request
+#define BIO_ctrl_get_write_guarantee GRPC_SHADOW_BIO_ctrl_get_write_guarantee
+#define BIO_ctrl_pending GRPC_SHADOW_BIO_ctrl_pending
+#define BIO_do_connect GRPC_SHADOW_BIO_do_connect
+#define BIO_eof GRPC_SHADOW_BIO_eof
+#define bio_fd_should_retry GRPC_SHADOW_bio_fd_should_retry
+#define BIO_find_type GRPC_SHADOW_BIO_find_type
+#define BIO_flush GRPC_SHADOW_BIO_flush
+#define BIO_free GRPC_SHADOW_BIO_free
+#define BIO_free_all GRPC_SHADOW_BIO_free_all
+#define BIO_f_ssl GRPC_SHADOW_BIO_f_ssl
+#define BIO_get_data GRPC_SHADOW_BIO_get_data
+#define BIO_get_fd GRPC_SHADOW_BIO_get_fd
+#define BIO_get_fp GRPC_SHADOW_BIO_get_fp
+#define BIO_get_init GRPC_SHADOW_BIO_get_init
+#define BIO_get_mem_data GRPC_SHADOW_BIO_get_mem_data
+#define BIO_get_mem_ptr GRPC_SHADOW_BIO_get_mem_ptr
+#define BIO_get_new_index GRPC_SHADOW_BIO_get_new_index
+#define BIO_get_retry_flags GRPC_SHADOW_BIO_get_retry_flags
+#define BIO_get_retry_reason GRPC_SHADOW_BIO_get_retry_reason
+#define BIO_gets GRPC_SHADOW_BIO_gets
+#define BIO_get_shutdown GRPC_SHADOW_BIO_get_shutdown
+#define BIO_hexdump GRPC_SHADOW_BIO_hexdump
+#define BIO_indent GRPC_SHADOW_BIO_indent
+#define BIO_int_ctrl GRPC_SHADOW_BIO_int_ctrl
+#define bio_ip_and_port_to_socket_and_addr GRPC_SHADOW_bio_ip_and_port_to_socket_and_addr
+#define BIO_mem_contents GRPC_SHADOW_BIO_mem_contents
+#define BIO_meth_free GRPC_SHADOW_BIO_meth_free
+#define BIO_meth_new GRPC_SHADOW_BIO_meth_new
+#define BIO_method_type GRPC_SHADOW_BIO_method_type
+#define BIO_meth_set_create GRPC_SHADOW_BIO_meth_set_create
+#define BIO_meth_set_ctrl GRPC_SHADOW_BIO_meth_set_ctrl
+#define BIO_meth_set_destroy GRPC_SHADOW_BIO_meth_set_destroy
+#define BIO_meth_set_gets GRPC_SHADOW_BIO_meth_set_gets
+#define BIO_meth_set_puts GRPC_SHADOW_BIO_meth_set_puts
+#define BIO_meth_set_read GRPC_SHADOW_BIO_meth_set_read
+#define BIO_meth_set_write GRPC_SHADOW_BIO_meth_set_write
+#define BIO_new GRPC_SHADOW_BIO_new
+#define BIO_new_bio_pair GRPC_SHADOW_BIO_new_bio_pair
+#define BIO_new_connect GRPC_SHADOW_BIO_new_connect
+#define BIO_new_fd GRPC_SHADOW_BIO_new_fd
+#define BIO_new_file GRPC_SHADOW_BIO_new_file
+#define BIO_new_fp GRPC_SHADOW_BIO_new_fp
+#define BIO_new_mem_buf GRPC_SHADOW_BIO_new_mem_buf
+#define BIO_new_socket GRPC_SHADOW_BIO_new_socket
+#define BIO_next GRPC_SHADOW_BIO_next
+#define BIO_number_read GRPC_SHADOW_BIO_number_read
+#define BIO_number_written GRPC_SHADOW_BIO_number_written
+#define BIO_pending GRPC_SHADOW_BIO_pending
+#define BIO_pop GRPC_SHADOW_BIO_pop
+#define BIO_printf GRPC_SHADOW_BIO_printf
+#define BIO_ptr_ctrl GRPC_SHADOW_BIO_ptr_ctrl
+#define BIO_push GRPC_SHADOW_BIO_push
+#define BIO_puts GRPC_SHADOW_BIO_puts
+#define BIO_read GRPC_SHADOW_BIO_read
+#define BIO_read_asn1 GRPC_SHADOW_BIO_read_asn1
+#define BIO_read_filename GRPC_SHADOW_BIO_read_filename
+#define BIO_reset GRPC_SHADOW_BIO_reset
+#define BIO_rw_filename GRPC_SHADOW_BIO_rw_filename
+#define BIO_s_connect GRPC_SHADOW_BIO_s_connect
+#define BIO_set_close GRPC_SHADOW_BIO_set_close
+#define BIO_set_conn_hostname GRPC_SHADOW_BIO_set_conn_hostname
+#define BIO_set_conn_int_port GRPC_SHADOW_BIO_set_conn_int_port
+#define BIO_set_conn_port GRPC_SHADOW_BIO_set_conn_port
+#define BIO_set_data GRPC_SHADOW_BIO_set_data
+#define BIO_set_fd GRPC_SHADOW_BIO_set_fd
+#define BIO_set_flags GRPC_SHADOW_BIO_set_flags
+#define BIO_set_fp GRPC_SHADOW_BIO_set_fp
+#define BIO_set_init GRPC_SHADOW_BIO_set_init
+#define BIO_set_mem_buf GRPC_SHADOW_BIO_set_mem_buf
+#define BIO_set_mem_eof_return GRPC_SHADOW_BIO_set_mem_eof_return
+#define BIO_set_nbio GRPC_SHADOW_BIO_set_nbio
+#define BIO_set_retry_read GRPC_SHADOW_BIO_set_retry_read
+#define BIO_set_retry_special GRPC_SHADOW_BIO_set_retry_special
+#define BIO_set_retry_write GRPC_SHADOW_BIO_set_retry_write
+#define BIO_set_shutdown GRPC_SHADOW_BIO_set_shutdown
+#define BIO_set_ssl GRPC_SHADOW_BIO_set_ssl
+#define BIO_set_write_buffer_size GRPC_SHADOW_BIO_set_write_buffer_size
+#define BIO_s_fd GRPC_SHADOW_BIO_s_fd
+#define BIO_s_file GRPC_SHADOW_BIO_s_file
+#define BIO_should_io_special GRPC_SHADOW_BIO_should_io_special
+#define BIO_should_read GRPC_SHADOW_BIO_should_read
+#define BIO_should_retry GRPC_SHADOW_BIO_should_retry
+#define BIO_should_write GRPC_SHADOW_BIO_should_write
+#define BIO_shutdown_wr GRPC_SHADOW_BIO_shutdown_wr
+#define BIO_s_mem GRPC_SHADOW_BIO_s_mem
+#define BIO_snprintf GRPC_SHADOW_BIO_snprintf
+#define bio_sock_error GRPC_SHADOW_bio_sock_error
+#define bio_socket_nbio GRPC_SHADOW_bio_socket_nbio
+#define BIO_s_socket GRPC_SHADOW_BIO_s_socket
+#define BIO_test_flags GRPC_SHADOW_BIO_test_flags
+#define BIO_up_ref GRPC_SHADOW_BIO_up_ref
+#define BIO_vfree GRPC_SHADOW_BIO_vfree
+#define BIO_vsnprintf GRPC_SHADOW_BIO_vsnprintf
+#define BIO_wpending GRPC_SHADOW_BIO_wpending
+#define BIO_write GRPC_SHADOW_BIO_write
+#define BIO_write_all GRPC_SHADOW_BIO_write_all
+#define BIO_write_filename GRPC_SHADOW_BIO_write_filename
+#define BN_abs_is_word GRPC_SHADOW_BN_abs_is_word
+#define bn_abs_sub_consttime GRPC_SHADOW_bn_abs_sub_consttime
+#define BN_add GRPC_SHADOW_BN_add
+#define BN_add_word GRPC_SHADOW_BN_add_word
+#define bn_add_words GRPC_SHADOW_bn_add_words
+#define BN_asc2bn GRPC_SHADOW_BN_asc2bn
+#define BN_bin2bn GRPC_SHADOW_BN_bin2bn
+#define BN_BLINDING_convert GRPC_SHADOW_BN_BLINDING_convert
+#define BN_BLINDING_free GRPC_SHADOW_BN_BLINDING_free
+#define BN_BLINDING_invert GRPC_SHADOW_BN_BLINDING_invert
+#define BN_BLINDING_new GRPC_SHADOW_BN_BLINDING_new
+#define BN_bn2bin GRPC_SHADOW_BN_bn2bin
+#define BN_bn2binpad GRPC_SHADOW_BN_bn2binpad
+#define BN_bn2bin_padded GRPC_SHADOW_BN_bn2bin_padded
+#define BN_bn2cbb_padded GRPC_SHADOW_BN_bn2cbb_padded
+#define BN_bn2dec GRPC_SHADOW_BN_bn2dec
+#define BN_bn2hex GRPC_SHADOW_BN_bn2hex
+#define BN_bn2le_padded GRPC_SHADOW_BN_bn2le_padded
+#define BN_bn2mpi GRPC_SHADOW_BN_bn2mpi
+#define BN_clear GRPC_SHADOW_BN_clear
+#define BN_clear_bit GRPC_SHADOW_BN_clear_bit
+#define BN_clear_free GRPC_SHADOW_BN_clear_free
+#define BN_cmp GRPC_SHADOW_BN_cmp
+#define BN_cmp_word GRPC_SHADOW_BN_cmp_word
+#define BN_copy GRPC_SHADOW_BN_copy
+#define bn_copy_words GRPC_SHADOW_bn_copy_words
+#define BN_count_low_zero_bits GRPC_SHADOW_BN_count_low_zero_bits
+#define BN_CTX_end GRPC_SHADOW_BN_CTX_end
+#define BN_CTX_free GRPC_SHADOW_BN_CTX_free
+#define BN_CTX_get GRPC_SHADOW_BN_CTX_get
+#define BN_CTX_new GRPC_SHADOW_BN_CTX_new
+#define BN_CTX_start GRPC_SHADOW_BN_CTX_start
+#define BN_dec2bn GRPC_SHADOW_BN_dec2bn
+#define BN_div GRPC_SHADOW_BN_div
+#define bn_div_consttime GRPC_SHADOW_bn_div_consttime
+#define BN_div_word GRPC_SHADOW_BN_div_word
+#define BN_dup GRPC_SHADOW_BN_dup
+#define BN_enhanced_miller_rabin_primality_test GRPC_SHADOW_BN_enhanced_miller_rabin_primality_test
+#define BN_equal_consttime GRPC_SHADOW_BN_equal_consttime
+#define BN_exp GRPC_SHADOW_BN_exp
+#define bn_expand GRPC_SHADOW_bn_expand
+#define bn_fits_in_words GRPC_SHADOW_bn_fits_in_words
+#define BN_free GRPC_SHADOW_BN_free
+#define bn_from_montgomery GRPC_SHADOW_bn_from_montgomery
+#define BN_from_montgomery GRPC_SHADOW_BN_from_montgomery
+#define bn_from_montgomery_small GRPC_SHADOW_bn_from_montgomery_small
+#define bn_gather5 GRPC_SHADOW_bn_gather5
+#define BN_gcd GRPC_SHADOW_BN_gcd
+#define BN_GENCB_call GRPC_SHADOW_BN_GENCB_call
+#define BN_GENCB_set GRPC_SHADOW_BN_GENCB_set
+#define BN_generate_prime_ex GRPC_SHADOW_BN_generate_prime_ex
+#define BN_get_rfc3526_prime_1536 GRPC_SHADOW_BN_get_rfc3526_prime_1536
+#define BN_get_u64 GRPC_SHADOW_BN_get_u64
+#define BN_get_word GRPC_SHADOW_BN_get_word
+#define BN_hex2bn GRPC_SHADOW_BN_hex2bn
+#define BN_init GRPC_SHADOW_BN_init
+#define bn_in_range_words GRPC_SHADOW_bn_in_range_words
+#define BN_is_bit_set GRPC_SHADOW_BN_is_bit_set
+#define bn_is_bit_set_words GRPC_SHADOW_bn_is_bit_set_words
+#define BN_is_negative GRPC_SHADOW_BN_is_negative
+#define BN_is_odd GRPC_SHADOW_BN_is_odd
+#define BN_is_one GRPC_SHADOW_BN_is_one
+#define BN_is_pow2 GRPC_SHADOW_BN_is_pow2
+#define BN_is_prime_ex GRPC_SHADOW_BN_is_prime_ex
+#define BN_is_prime_fasttest_ex GRPC_SHADOW_BN_is_prime_fasttest_ex
+#define bn_is_relatively_prime GRPC_SHADOW_bn_is_relatively_prime
+#define BN_is_word GRPC_SHADOW_BN_is_word
+#define BN_is_zero GRPC_SHADOW_BN_is_zero
+#define bn_jacobi GRPC_SHADOW_bn_jacobi
+#define bn_lcm_consttime GRPC_SHADOW_bn_lcm_consttime
+#define BN_le2bn GRPC_SHADOW_BN_le2bn
+#define bn_less_than_montgomery_R GRPC_SHADOW_bn_less_than_montgomery_R
+#define bn_less_than_words GRPC_SHADOW_bn_less_than_words
+#define BN_lshift GRPC_SHADOW_BN_lshift
+#define BN_lshift1 GRPC_SHADOW_BN_lshift1
+#define BN_marshal_asn1 GRPC_SHADOW_BN_marshal_asn1
+#define BN_mask_bits GRPC_SHADOW_BN_mask_bits
+#define bn_miller_rabin_init GRPC_SHADOW_bn_miller_rabin_init
+#define bn_miller_rabin_iteration GRPC_SHADOW_bn_miller_rabin_iteration
+#define bn_minimal_width GRPC_SHADOW_bn_minimal_width
+#define BN_mod_add GRPC_SHADOW_BN_mod_add
+#define bn_mod_add_consttime GRPC_SHADOW_bn_mod_add_consttime
+#define BN_mod_add_quick GRPC_SHADOW_BN_mod_add_quick
+#define bn_mod_add_words GRPC_SHADOW_bn_mod_add_words
+#define BN_mod_exp GRPC_SHADOW_BN_mod_exp
+#define BN_mod_exp2_mont GRPC_SHADOW_BN_mod_exp2_mont
+#define bn_mod_exp_base_2_consttime GRPC_SHADOW_bn_mod_exp_base_2_consttime
+#define BN_mod_exp_mont GRPC_SHADOW_BN_mod_exp_mont
+#define BN_mod_exp_mont_consttime GRPC_SHADOW_BN_mod_exp_mont_consttime
+#define bn_mod_exp_mont_small GRPC_SHADOW_bn_mod_exp_mont_small
+#define BN_mod_exp_mont_word GRPC_SHADOW_BN_mod_exp_mont_word
+#define BN_mod_inverse GRPC_SHADOW_BN_mod_inverse
+#define BN_mod_inverse_blinded GRPC_SHADOW_BN_mod_inverse_blinded
+#define bn_mod_inverse_consttime GRPC_SHADOW_bn_mod_inverse_consttime
+#define BN_mod_inverse_odd GRPC_SHADOW_BN_mod_inverse_odd
+#define bn_mod_inverse_prime GRPC_SHADOW_bn_mod_inverse_prime
+#define bn_mod_inverse_prime_mont_small GRPC_SHADOW_bn_mod_inverse_prime_mont_small
+#define bn_mod_inverse_secret_prime GRPC_SHADOW_bn_mod_inverse_secret_prime
+#define BN_mod_lshift GRPC_SHADOW_BN_mod_lshift
+#define BN_mod_lshift1 GRPC_SHADOW_BN_mod_lshift1
+#define bn_mod_lshift1_consttime GRPC_SHADOW_bn_mod_lshift1_consttime
+#define BN_mod_lshift1_quick GRPC_SHADOW_BN_mod_lshift1_quick
+#define bn_mod_lshift_consttime GRPC_SHADOW_bn_mod_lshift_consttime
+#define BN_mod_lshift_quick GRPC_SHADOW_BN_mod_lshift_quick
+#define BN_mod_mul GRPC_SHADOW_BN_mod_mul
+#define BN_mod_mul_montgomery GRPC_SHADOW_BN_mod_mul_montgomery
+#define bn_mod_mul_montgomery_small GRPC_SHADOW_bn_mod_mul_montgomery_small
+#define BN_mod_pow2 GRPC_SHADOW_BN_mod_pow2
+#define BN_mod_sqr GRPC_SHADOW_BN_mod_sqr
+#define BN_mod_sqrt GRPC_SHADOW_BN_mod_sqrt
+#define BN_mod_sub GRPC_SHADOW_BN_mod_sub
+#define bn_mod_sub_consttime GRPC_SHADOW_bn_mod_sub_consttime
+#define BN_mod_sub_quick GRPC_SHADOW_BN_mod_sub_quick
+#define bn_mod_sub_words GRPC_SHADOW_bn_mod_sub_words
+#define bn_mod_u16_consttime GRPC_SHADOW_bn_mod_u16_consttime
+#define BN_mod_word GRPC_SHADOW_BN_mod_word
+#define BN_MONT_CTX_copy GRPC_SHADOW_BN_MONT_CTX_copy
+#define BN_MONT_CTX_free GRPC_SHADOW_BN_MONT_CTX_free
+#define BN_MONT_CTX_new GRPC_SHADOW_BN_MONT_CTX_new
+#define BN_MONT_CTX_new_consttime GRPC_SHADOW_BN_MONT_CTX_new_consttime
+#define BN_MONT_CTX_new_for_modulus GRPC_SHADOW_BN_MONT_CTX_new_for_modulus
+#define BN_MONT_CTX_set GRPC_SHADOW_BN_MONT_CTX_set
+#define BN_MONT_CTX_set_locked GRPC_SHADOW_BN_MONT_CTX_set_locked
+#define bn_mont_n0 GRPC_SHADOW_bn_mont_n0
+#define BN_mpi2bn GRPC_SHADOW_BN_mpi2bn
+#define BN_mul GRPC_SHADOW_BN_mul
+#define bn_mul_add_words GRPC_SHADOW_bn_mul_add_words
+#define bn_mul_comba4 GRPC_SHADOW_bn_mul_comba4
+#define bn_mul_comba8 GRPC_SHADOW_bn_mul_comba8
+#define bn_mul_consttime GRPC_SHADOW_bn_mul_consttime
+#define bn_mul_mont GRPC_SHADOW_bn_mul_mont
+#define bn_mul_mont_gather5 GRPC_SHADOW_bn_mul_mont_gather5
+#define bn_mul_small GRPC_SHADOW_bn_mul_small
+#define BN_mul_word GRPC_SHADOW_BN_mul_word
+#define bn_mul_words GRPC_SHADOW_bn_mul_words
+#define BN_new GRPC_SHADOW_BN_new
+#define BN_nnmod GRPC_SHADOW_BN_nnmod
+#define BN_nnmod_pow2 GRPC_SHADOW_BN_nnmod_pow2
+#define BN_num_bits GRPC_SHADOW_BN_num_bits
+#define BN_num_bits_word GRPC_SHADOW_BN_num_bits_word
+#define BN_num_bytes GRPC_SHADOW_BN_num_bytes
+#define bn_odd_number_is_obviously_composite GRPC_SHADOW_bn_odd_number_is_obviously_composite
+#define BN_one GRPC_SHADOW_BN_one
+#define bn_one_to_montgomery GRPC_SHADOW_bn_one_to_montgomery
+#define BN_parse_asn1_unsigned GRPC_SHADOW_BN_parse_asn1_unsigned
+#define bn_power5 GRPC_SHADOW_bn_power5
+#define BN_primality_test GRPC_SHADOW_BN_primality_test
+#define BN_print GRPC_SHADOW_BN_print
+#define BN_print_fp GRPC_SHADOW_BN_print_fp
+#define BN_pseudo_rand GRPC_SHADOW_BN_pseudo_rand
+#define BN_pseudo_rand_range GRPC_SHADOW_BN_pseudo_rand_range
+#define BN_rand GRPC_SHADOW_BN_rand
+#define BN_rand_range GRPC_SHADOW_BN_rand_range
+#define BN_rand_range_ex GRPC_SHADOW_BN_rand_range_ex
+#define bn_rand_range_words GRPC_SHADOW_bn_rand_range_words
+#define bn_rand_secret_range GRPC_SHADOW_bn_rand_secret_range
+#define bn_reduce_once GRPC_SHADOW_bn_reduce_once
+#define bn_reduce_once_in_place GRPC_SHADOW_bn_reduce_once_in_place
+#define bn_resize_words GRPC_SHADOW_bn_resize_words
+#define BN_rshift GRPC_SHADOW_BN_rshift
+#define BN_rshift1 GRPC_SHADOW_BN_rshift1
+#define bn_rshift1_words GRPC_SHADOW_bn_rshift1_words
+#define bn_rshift_secret_shift GRPC_SHADOW_bn_rshift_secret_shift
+#define bn_rshift_words GRPC_SHADOW_bn_rshift_words
+#define bn_scatter5 GRPC_SHADOW_bn_scatter5
+#define bn_select_words GRPC_SHADOW_bn_select_words
+#define BN_set_bit GRPC_SHADOW_BN_set_bit
+#define bn_set_minimal_width GRPC_SHADOW_bn_set_minimal_width
+#define BN_set_negative GRPC_SHADOW_BN_set_negative
+#define BN_set_u64 GRPC_SHADOW_BN_set_u64
+#define BN_set_word GRPC_SHADOW_BN_set_word
+#define bn_set_words GRPC_SHADOW_bn_set_words
+#define BN_sqr GRPC_SHADOW_BN_sqr
+#define bn_sqr8x_internal GRPC_SHADOW_bn_sqr8x_internal
+#define bn_sqr_comba4 GRPC_SHADOW_bn_sqr_comba4
+#define bn_sqr_comba8 GRPC_SHADOW_bn_sqr_comba8
+#define bn_sqr_consttime GRPC_SHADOW_bn_sqr_consttime
+#define bn_sqr_small GRPC_SHADOW_bn_sqr_small
+#define BN_sqrt GRPC_SHADOW_BN_sqrt
+#define bn_sqr_words GRPC_SHADOW_bn_sqr_words
+#define bn_sqrx8x_internal GRPC_SHADOW_bn_sqrx8x_internal
+#define BN_sub GRPC_SHADOW_BN_sub
+#define BN_sub_word GRPC_SHADOW_BN_sub_word
+#define bn_sub_words GRPC_SHADOW_bn_sub_words
+#define BN_to_ASN1_ENUMERATED GRPC_SHADOW_BN_to_ASN1_ENUMERATED
+#define BN_to_ASN1_INTEGER GRPC_SHADOW_BN_to_ASN1_INTEGER
+#define BN_to_montgomery GRPC_SHADOW_BN_to_montgomery
+#define bn_to_montgomery_small GRPC_SHADOW_bn_to_montgomery_small
+#define BN_uadd GRPC_SHADOW_BN_uadd
+#define bn_uadd_consttime GRPC_SHADOW_bn_uadd_consttime
+#define BN_ucmp GRPC_SHADOW_BN_ucmp
+#define BN_usub GRPC_SHADOW_BN_usub
+#define bn_usub_consttime GRPC_SHADOW_bn_usub_consttime
+#define BN_value_one GRPC_SHADOW_BN_value_one
+#define bn_wexpand GRPC_SHADOW_bn_wexpand
+#define BN_zero GRPC_SHADOW_BN_zero
+#define boringssl_fips_self_test GRPC_SHADOW_boringssl_fips_self_test
+#define BORINGSSL_self_test GRPC_SHADOW_BORINGSSL_self_test
+#define BUF_MEM_append GRPC_SHADOW_BUF_MEM_append
+#define BUF_memdup GRPC_SHADOW_BUF_memdup
+#define BUF_MEM_free GRPC_SHADOW_BUF_MEM_free
+#define BUF_MEM_grow GRPC_SHADOW_BUF_MEM_grow
+#define BUF_MEM_grow_clean GRPC_SHADOW_BUF_MEM_grow_clean
+#define BUF_MEM_new GRPC_SHADOW_BUF_MEM_new
+#define BUF_MEM_reserve GRPC_SHADOW_BUF_MEM_reserve
+#define BUF_strdup GRPC_SHADOW_BUF_strdup
+#define BUF_strlcat GRPC_SHADOW_BUF_strlcat
+#define BUF_strlcpy GRPC_SHADOW_BUF_strlcpy
+#define BUF_strndup GRPC_SHADOW_BUF_strndup
+#define BUF_strnlen GRPC_SHADOW_BUF_strnlen
+#define c2i_ASN1_BIT_STRING GRPC_SHADOW_c2i_ASN1_BIT_STRING
+#define c2i_ASN1_INTEGER GRPC_SHADOW_c2i_ASN1_INTEGER
+#define c2i_ASN1_OBJECT GRPC_SHADOW_c2i_ASN1_OBJECT
+#define CBB_add_asn1 GRPC_SHADOW_CBB_add_asn1
+#define CBB_add_asn1_bool GRPC_SHADOW_CBB_add_asn1_bool
+#define CBB_add_asn1_int64 GRPC_SHADOW_CBB_add_asn1_int64
+#define CBB_add_asn1_octet_string GRPC_SHADOW_CBB_add_asn1_octet_string
+#define CBB_add_asn1_oid_from_text GRPC_SHADOW_CBB_add_asn1_oid_from_text
+#define CBB_add_asn1_uint64 GRPC_SHADOW_CBB_add_asn1_uint64
+#define CBB_add_bytes GRPC_SHADOW_CBB_add_bytes
+#define cbb_add_latin1 GRPC_SHADOW_cbb_add_latin1
+#define CBB_add_space GRPC_SHADOW_CBB_add_space
+#define CBB_add_u16 GRPC_SHADOW_CBB_add_u16
+#define CBB_add_u16le GRPC_SHADOW_CBB_add_u16le
+#define CBB_add_u16_length_prefixed GRPC_SHADOW_CBB_add_u16_length_prefixed
+#define CBB_add_u24 GRPC_SHADOW_CBB_add_u24
+#define CBB_add_u24_length_prefixed GRPC_SHADOW_CBB_add_u24_length_prefixed
+#define CBB_add_u32 GRPC_SHADOW_CBB_add_u32
+#define CBB_add_u32le GRPC_SHADOW_CBB_add_u32le
+#define CBB_add_u64 GRPC_SHADOW_CBB_add_u64
+#define CBB_add_u64le GRPC_SHADOW_CBB_add_u64le
+#define CBB_add_u8 GRPC_SHADOW_CBB_add_u8
+#define CBB_add_u8_length_prefixed GRPC_SHADOW_CBB_add_u8_length_prefixed
+#define cbb_add_ucs2_be GRPC_SHADOW_cbb_add_ucs2_be
+#define cbb_add_utf32_be GRPC_SHADOW_cbb_add_utf32_be
+#define cbb_add_utf8 GRPC_SHADOW_cbb_add_utf8
+#define CBB_cleanup GRPC_SHADOW_CBB_cleanup
+#define CBB_data GRPC_SHADOW_CBB_data
+#define CBB_did_write GRPC_SHADOW_CBB_did_write
+#define CBB_discard_child GRPC_SHADOW_CBB_discard_child
+#define CBB_finish GRPC_SHADOW_CBB_finish
+#define CBB_finish_i2d GRPC_SHADOW_CBB_finish_i2d
+#define CBB_flush GRPC_SHADOW_CBB_flush
+#define CBB_flush_asn1_set_of GRPC_SHADOW_CBB_flush_asn1_set_of
+#define cbb_get_utf8_len GRPC_SHADOW_cbb_get_utf8_len
+#define CBB_init GRPC_SHADOW_CBB_init
+#define CBB_init_fixed GRPC_SHADOW_CBB_init_fixed
+#define CBB_len GRPC_SHADOW_CBB_len
+#define CBB_reserve GRPC_SHADOW_CBB_reserve
+#define CBB_zero GRPC_SHADOW_CBB_zero
+#define CBS_asn1_ber_to_der GRPC_SHADOW_CBS_asn1_ber_to_der
+#define CBS_asn1_bitstring_has_bit GRPC_SHADOW_CBS_asn1_bitstring_has_bit
+#define CBS_asn1_oid_to_text GRPC_SHADOW_CBS_asn1_oid_to_text
+#define CBS_contains_zero_byte GRPC_SHADOW_CBS_contains_zero_byte
+#define CBS_copy_bytes GRPC_SHADOW_CBS_copy_bytes
+#define CBS_data GRPC_SHADOW_CBS_data
+#define CBS_get_any_asn1 GRPC_SHADOW_CBS_get_any_asn1
+#define CBS_get_any_asn1_element GRPC_SHADOW_CBS_get_any_asn1_element
+#define CBS_get_any_ber_asn1_element GRPC_SHADOW_CBS_get_any_ber_asn1_element
+#define CBS_get_asn1 GRPC_SHADOW_CBS_get_asn1
+#define CBS_get_asn1_bool GRPC_SHADOW_CBS_get_asn1_bool
+#define CBS_get_asn1_element GRPC_SHADOW_CBS_get_asn1_element
+#define CBS_get_asn1_implicit_string GRPC_SHADOW_CBS_get_asn1_implicit_string
+#define CBS_get_asn1_int64 GRPC_SHADOW_CBS_get_asn1_int64
+#define CBS_get_asn1_uint64 GRPC_SHADOW_CBS_get_asn1_uint64
+#define CBS_get_bytes GRPC_SHADOW_CBS_get_bytes
+#define CBS_get_last_u8 GRPC_SHADOW_CBS_get_last_u8
+#define cbs_get_latin1 GRPC_SHADOW_cbs_get_latin1
+#define CBS_get_optional_asn1 GRPC_SHADOW_CBS_get_optional_asn1
+#define CBS_get_optional_asn1_bool GRPC_SHADOW_CBS_get_optional_asn1_bool
+#define CBS_get_optional_asn1_octet_string GRPC_SHADOW_CBS_get_optional_asn1_octet_string
+#define CBS_get_optional_asn1_uint64 GRPC_SHADOW_CBS_get_optional_asn1_uint64
+#define CBS_get_u16 GRPC_SHADOW_CBS_get_u16
+#define CBS_get_u16le GRPC_SHADOW_CBS_get_u16le
+#define CBS_get_u16_length_prefixed GRPC_SHADOW_CBS_get_u16_length_prefixed
+#define CBS_get_u24 GRPC_SHADOW_CBS_get_u24
+#define CBS_get_u24_length_prefixed GRPC_SHADOW_CBS_get_u24_length_prefixed
+#define CBS_get_u32 GRPC_SHADOW_CBS_get_u32
+#define CBS_get_u32le GRPC_SHADOW_CBS_get_u32le
+#define CBS_get_u64 GRPC_SHADOW_CBS_get_u64
+#define CBS_get_u64le GRPC_SHADOW_CBS_get_u64le
+#define CBS_get_u8 GRPC_SHADOW_CBS_get_u8
+#define CBS_get_u8_length_prefixed GRPC_SHADOW_CBS_get_u8_length_prefixed
+#define cbs_get_ucs2_be GRPC_SHADOW_cbs_get_ucs2_be
+#define cbs_get_utf32_be GRPC_SHADOW_cbs_get_utf32_be
+#define cbs_get_utf8 GRPC_SHADOW_cbs_get_utf8
+#define CBS_init GRPC_SHADOW_CBS_init
+#define CBS_is_valid_asn1_bitstring GRPC_SHADOW_CBS_is_valid_asn1_bitstring
+#define CBS_len GRPC_SHADOW_CBS_len
+#define CBS_mem_equal GRPC_SHADOW_CBS_mem_equal
+#define CBS_peek_asn1_tag GRPC_SHADOW_CBS_peek_asn1_tag
+#define CBS_skip GRPC_SHADOW_CBS_skip
+#define CBS_stow GRPC_SHADOW_CBS_stow
+#define CBS_strdup GRPC_SHADOW_CBS_strdup
+#define CERTIFICATEPOLICIES_free GRPC_SHADOW_CERTIFICATEPOLICIES_free
+#define CERTIFICATEPOLICIES_it GRPC_SHADOW_CERTIFICATEPOLICIES_it
+#define CERTIFICATEPOLICIES_new GRPC_SHADOW_CERTIFICATEPOLICIES_new
+#define ChaCha20_ctr32 GRPC_SHADOW_ChaCha20_ctr32
+#define chacha20_poly1305_open GRPC_SHADOW_chacha20_poly1305_open
+#define chacha20_poly1305_seal GRPC_SHADOW_chacha20_poly1305_seal
+#define CMAC_CTX_copy GRPC_SHADOW_CMAC_CTX_copy
+#define CMAC_CTX_free GRPC_SHADOW_CMAC_CTX_free
+#define CMAC_CTX_new GRPC_SHADOW_CMAC_CTX_new
+#define CMAC_Final GRPC_SHADOW_CMAC_Final
+#define CMAC_Init GRPC_SHADOW_CMAC_Init
+#define CMAC_Reset GRPC_SHADOW_CMAC_Reset
+#define CMAC_Update GRPC_SHADOW_CMAC_Update
+#define CONF_modules_free GRPC_SHADOW_CONF_modules_free
+#define CONF_modules_load_file GRPC_SHADOW_CONF_modules_load_file
+#define CONF_parse_list GRPC_SHADOW_CONF_parse_list
+#define CONF_VALUE_new GRPC_SHADOW_CONF_VALUE_new
+#define CRL_DIST_POINTS_free GRPC_SHADOW_CRL_DIST_POINTS_free
+#define CRL_DIST_POINTS_it GRPC_SHADOW_CRL_DIST_POINTS_it
+#define CRL_DIST_POINTS_new GRPC_SHADOW_CRL_DIST_POINTS_new
+#define CRYPTO_BUFFER_alloc GRPC_SHADOW_CRYPTO_BUFFER_alloc
+#define CRYPTO_BUFFER_data GRPC_SHADOW_CRYPTO_BUFFER_data
+#define CRYPTO_BUFFER_free GRPC_SHADOW_CRYPTO_BUFFER_free
+#define CRYPTO_BUFFER_init_CBS GRPC_SHADOW_CRYPTO_BUFFER_init_CBS
+#define CRYPTO_BUFFER_len GRPC_SHADOW_CRYPTO_BUFFER_len
+#define CRYPTO_BUFFER_new GRPC_SHADOW_CRYPTO_BUFFER_new
+#define CRYPTO_BUFFER_new_from_CBS GRPC_SHADOW_CRYPTO_BUFFER_new_from_CBS
+#define CRYPTO_BUFFER_POOL_free GRPC_SHADOW_CRYPTO_BUFFER_POOL_free
+#define CRYPTO_BUFFER_POOL_new GRPC_SHADOW_CRYPTO_BUFFER_POOL_new
+#define CRYPTO_BUFFER_up_ref GRPC_SHADOW_CRYPTO_BUFFER_up_ref
+#define CRYPTO_cbc128_decrypt GRPC_SHADOW_CRYPTO_cbc128_decrypt
+#define CRYPTO_cbc128_encrypt GRPC_SHADOW_CRYPTO_cbc128_encrypt
+#define CRYPTO_cfb128_1_encrypt GRPC_SHADOW_CRYPTO_cfb128_1_encrypt
+#define CRYPTO_cfb128_8_encrypt GRPC_SHADOW_CRYPTO_cfb128_8_encrypt
+#define CRYPTO_cfb128_encrypt GRPC_SHADOW_CRYPTO_cfb128_encrypt
+#define CRYPTO_chacha_20 GRPC_SHADOW_CRYPTO_chacha_20
+#define CRYPTO_cleanup_all_ex_data GRPC_SHADOW_CRYPTO_cleanup_all_ex_data
+#define CRYPTO_ctr128_encrypt GRPC_SHADOW_CRYPTO_ctr128_encrypt
+#define CRYPTO_ctr128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_ctr128_encrypt_ctr32
+#define CRYPTO_free_ex_data GRPC_SHADOW_CRYPTO_free_ex_data
+#define CRYPTO_gcm128_aad GRPC_SHADOW_CRYPTO_gcm128_aad
+#define CRYPTO_gcm128_decrypt GRPC_SHADOW_CRYPTO_gcm128_decrypt
+#define CRYPTO_gcm128_decrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_decrypt_ctr32
+#define CRYPTO_gcm128_encrypt GRPC_SHADOW_CRYPTO_gcm128_encrypt
+#define CRYPTO_gcm128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_encrypt_ctr32
+#define CRYPTO_gcm128_finish GRPC_SHADOW_CRYPTO_gcm128_finish
+#define CRYPTO_gcm128_init_key GRPC_SHADOW_CRYPTO_gcm128_init_key
+#define CRYPTO_gcm128_setiv GRPC_SHADOW_CRYPTO_gcm128_setiv
+#define CRYPTO_gcm128_tag GRPC_SHADOW_CRYPTO_gcm128_tag
+#define crypto_gcm_clmul_enabled GRPC_SHADOW_crypto_gcm_clmul_enabled
+#define CRYPTO_get_dynlock_create_callback GRPC_SHADOW_CRYPTO_get_dynlock_create_callback
+#define CRYPTO_get_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_get_dynlock_destroy_callback
+#define CRYPTO_get_dynlock_lock_callback GRPC_SHADOW_CRYPTO_get_dynlock_lock_callback
+#define CRYPTO_get_ex_data GRPC_SHADOW_CRYPTO_get_ex_data
+#define CRYPTO_get_ex_new_index GRPC_SHADOW_CRYPTO_get_ex_new_index
+#define CRYPTO_get_locking_callback GRPC_SHADOW_CRYPTO_get_locking_callback
+#define CRYPTO_get_lock_name GRPC_SHADOW_CRYPTO_get_lock_name
+#define CRYPTO_get_thread_local GRPC_SHADOW_CRYPTO_get_thread_local
+#define CRYPTO_ghash_init GRPC_SHADOW_CRYPTO_ghash_init
+#define CRYPTO_has_asm GRPC_SHADOW_CRYPTO_has_asm
+#define CRYPTO_hchacha20 GRPC_SHADOW_CRYPTO_hchacha20
+#define CRYPTO_is_confidential_build GRPC_SHADOW_CRYPTO_is_confidential_build
+#define CRYPTO_library_init GRPC_SHADOW_CRYPTO_library_init
+#define CRYPTO_malloc_init GRPC_SHADOW_CRYPTO_malloc_init
+#define CRYPTO_memcmp GRPC_SHADOW_CRYPTO_memcmp
+#define CRYPTO_MUTEX_cleanup GRPC_SHADOW_CRYPTO_MUTEX_cleanup
+#define CRYPTO_MUTEX_init GRPC_SHADOW_CRYPTO_MUTEX_init
+#define CRYPTO_MUTEX_lock_read GRPC_SHADOW_CRYPTO_MUTEX_lock_read
+#define CRYPTO_MUTEX_lock_write GRPC_SHADOW_CRYPTO_MUTEX_lock_write
+#define CRYPTO_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_MUTEX_unlock_read
+#define CRYPTO_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_MUTEX_unlock_write
+#define CRYPTO_new_ex_data GRPC_SHADOW_CRYPTO_new_ex_data
+#define CRYPTO_num_locks GRPC_SHADOW_CRYPTO_num_locks
+#define CRYPTO_ofb128_encrypt GRPC_SHADOW_CRYPTO_ofb128_encrypt
+#define CRYPTO_once GRPC_SHADOW_CRYPTO_once
+#define CRYPTO_poly1305_finish GRPC_SHADOW_CRYPTO_poly1305_finish
+#define CRYPTO_poly1305_init GRPC_SHADOW_CRYPTO_poly1305_init
+#define CRYPTO_poly1305_update GRPC_SHADOW_CRYPTO_poly1305_update
+#define CRYPTO_POLYVAL_finish GRPC_SHADOW_CRYPTO_POLYVAL_finish
+#define CRYPTO_POLYVAL_init GRPC_SHADOW_CRYPTO_POLYVAL_init
+#define CRYPTO_POLYVAL_update_blocks GRPC_SHADOW_CRYPTO_POLYVAL_update_blocks
+#define CRYPTO_rdrand GRPC_SHADOW_CRYPTO_rdrand
+#define CRYPTO_rdrand_multiple8_buf GRPC_SHADOW_CRYPTO_rdrand_multiple8_buf
+#define CRYPTO_refcount_dec_and_test_zero GRPC_SHADOW_CRYPTO_refcount_dec_and_test_zero
+#define CRYPTO_refcount_inc GRPC_SHADOW_CRYPTO_refcount_inc
+#define CRYPTO_set_add_lock_callback GRPC_SHADOW_CRYPTO_set_add_lock_callback
+#define CRYPTO_set_dynlock_create_callback GRPC_SHADOW_CRYPTO_set_dynlock_create_callback
+#define CRYPTO_set_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_set_dynlock_destroy_callback
+#define CRYPTO_set_dynlock_lock_callback GRPC_SHADOW_CRYPTO_set_dynlock_lock_callback
+#define CRYPTO_set_ex_data GRPC_SHADOW_CRYPTO_set_ex_data
+#define CRYPTO_set_id_callback GRPC_SHADOW_CRYPTO_set_id_callback
+#define CRYPTO_set_locking_callback GRPC_SHADOW_CRYPTO_set_locking_callback
+#define CRYPTO_set_thread_local GRPC_SHADOW_CRYPTO_set_thread_local
+#define CRYPTO_STATIC_MUTEX_lock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_read
+#define CRYPTO_STATIC_MUTEX_lock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_write
+#define CRYPTO_STATIC_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_read
+#define CRYPTO_STATIC_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_write
+#define CRYPTO_sysrand GRPC_SHADOW_CRYPTO_sysrand
+#define CRYPTO_THREADID_current GRPC_SHADOW_CRYPTO_THREADID_current
+#define CRYPTO_THREADID_set_callback GRPC_SHADOW_CRYPTO_THREADID_set_callback
+#define CRYPTO_THREADID_set_numeric GRPC_SHADOW_CRYPTO_THREADID_set_numeric
+#define CRYPTO_THREADID_set_pointer GRPC_SHADOW_CRYPTO_THREADID_set_pointer
+#define CRYPTO_tls1_prf GRPC_SHADOW_CRYPTO_tls1_prf
+#define CTR_DRBG_clear GRPC_SHADOW_CTR_DRBG_clear
+#define CTR_DRBG_generate GRPC_SHADOW_CTR_DRBG_generate
+#define CTR_DRBG_init GRPC_SHADOW_CTR_DRBG_init
+#define CTR_DRBG_reseed GRPC_SHADOW_CTR_DRBG_reseed
+#define d2i_ACCESS_DESCRIPTION GRPC_SHADOW_d2i_ACCESS_DESCRIPTION
+#define d2i_ASN1_BIT_STRING GRPC_SHADOW_d2i_ASN1_BIT_STRING
+#define d2i_ASN1_BMPSTRING GRPC_SHADOW_d2i_ASN1_BMPSTRING
+#define d2i_ASN1_BOOLEAN GRPC_SHADOW_d2i_ASN1_BOOLEAN
+#define d2i_ASN1_ENUMERATED GRPC_SHADOW_d2i_ASN1_ENUMERATED
+#define d2i_ASN1_GENERALIZEDTIME GRPC_SHADOW_d2i_ASN1_GENERALIZEDTIME
+#define d2i_ASN1_GENERALSTRING GRPC_SHADOW_d2i_ASN1_GENERALSTRING
+#define d2i_ASN1_IA5STRING GRPC_SHADOW_d2i_ASN1_IA5STRING
+#define d2i_ASN1_INTEGER GRPC_SHADOW_d2i_ASN1_INTEGER
+#define d2i_ASN1_NULL GRPC_SHADOW_d2i_ASN1_NULL
+#define d2i_ASN1_OBJECT GRPC_SHADOW_d2i_ASN1_OBJECT
+#define d2i_ASN1_OCTET_STRING GRPC_SHADOW_d2i_ASN1_OCTET_STRING
+#define d2i_ASN1_PRINTABLE GRPC_SHADOW_d2i_ASN1_PRINTABLE
+#define d2i_ASN1_PRINTABLESTRING GRPC_SHADOW_d2i_ASN1_PRINTABLESTRING
+#define d2i_ASN1_SEQUENCE_ANY GRPC_SHADOW_d2i_ASN1_SEQUENCE_ANY
+#define d2i_ASN1_SET_ANY GRPC_SHADOW_d2i_ASN1_SET_ANY
+#define d2i_ASN1_T61STRING GRPC_SHADOW_d2i_ASN1_T61STRING
+#define d2i_ASN1_TIME GRPC_SHADOW_d2i_ASN1_TIME
+#define d2i_ASN1_TYPE GRPC_SHADOW_d2i_ASN1_TYPE
+#define d2i_ASN1_UNIVERSALSTRING GRPC_SHADOW_d2i_ASN1_UNIVERSALSTRING
+#define d2i_ASN1_UTCTIME GRPC_SHADOW_d2i_ASN1_UTCTIME
+#define d2i_ASN1_UTF8STRING GRPC_SHADOW_d2i_ASN1_UTF8STRING
+#define d2i_ASN1_VISIBLESTRING GRPC_SHADOW_d2i_ASN1_VISIBLESTRING
+#define d2i_AUTHORITY_INFO_ACCESS GRPC_SHADOW_d2i_AUTHORITY_INFO_ACCESS
+#define d2i_AUTHORITY_KEYID GRPC_SHADOW_d2i_AUTHORITY_KEYID
+#define d2i_AutoPrivateKey GRPC_SHADOW_d2i_AutoPrivateKey
+#define d2i_BASIC_CONSTRAINTS GRPC_SHADOW_d2i_BASIC_CONSTRAINTS
+#define d2i_CERTIFICATEPOLICIES GRPC_SHADOW_d2i_CERTIFICATEPOLICIES
+#define d2i_CRL_DIST_POINTS GRPC_SHADOW_d2i_CRL_DIST_POINTS
+#define d2i_DHparams GRPC_SHADOW_d2i_DHparams
+#define d2i_DHparams_bio GRPC_SHADOW_d2i_DHparams_bio
+#define d2i_DIRECTORYSTRING GRPC_SHADOW_d2i_DIRECTORYSTRING
+#define d2i_DISPLAYTEXT GRPC_SHADOW_d2i_DISPLAYTEXT
+#define d2i_DIST_POINT GRPC_SHADOW_d2i_DIST_POINT
+#define d2i_DIST_POINT_NAME GRPC_SHADOW_d2i_DIST_POINT_NAME
+#define d2i_DSAparams GRPC_SHADOW_d2i_DSAparams
+#define d2i_DSAPrivateKey GRPC_SHADOW_d2i_DSAPrivateKey
+#define d2i_DSAPrivateKey_bio GRPC_SHADOW_d2i_DSAPrivateKey_bio
+#define d2i_DSAPrivateKey_fp GRPC_SHADOW_d2i_DSAPrivateKey_fp
+#define d2i_DSA_PUBKEY GRPC_SHADOW_d2i_DSA_PUBKEY
+#define d2i_DSA_PUBKEY_bio GRPC_SHADOW_d2i_DSA_PUBKEY_bio
+#define d2i_DSA_PUBKEY_fp GRPC_SHADOW_d2i_DSA_PUBKEY_fp
+#define d2i_DSAPublicKey GRPC_SHADOW_d2i_DSAPublicKey
+#define d2i_DSA_SIG GRPC_SHADOW_d2i_DSA_SIG
+#define d2i_ECDSA_SIG GRPC_SHADOW_d2i_ECDSA_SIG
+#define d2i_ECParameters GRPC_SHADOW_d2i_ECParameters
+#define d2i_ECPrivateKey GRPC_SHADOW_d2i_ECPrivateKey
+#define d2i_ECPrivateKey_bio GRPC_SHADOW_d2i_ECPrivateKey_bio
+#define d2i_ECPrivateKey_fp GRPC_SHADOW_d2i_ECPrivateKey_fp
+#define d2i_EC_PUBKEY GRPC_SHADOW_d2i_EC_PUBKEY
+#define d2i_EC_PUBKEY_bio GRPC_SHADOW_d2i_EC_PUBKEY_bio
+#define d2i_EC_PUBKEY_fp GRPC_SHADOW_d2i_EC_PUBKEY_fp
+#define d2i_EDIPARTYNAME GRPC_SHADOW_d2i_EDIPARTYNAME
+#define d2i_EXTENDED_KEY_USAGE GRPC_SHADOW_d2i_EXTENDED_KEY_USAGE
+#define d2i_GENERAL_NAME GRPC_SHADOW_d2i_GENERAL_NAME
+#define d2i_GENERAL_NAMES GRPC_SHADOW_d2i_GENERAL_NAMES
+#define d2i_ISSUING_DIST_POINT GRPC_SHADOW_d2i_ISSUING_DIST_POINT
+#define d2i_NETSCAPE_SPKAC GRPC_SHADOW_d2i_NETSCAPE_SPKAC
+#define d2i_NETSCAPE_SPKI GRPC_SHADOW_d2i_NETSCAPE_SPKI
+#define d2i_NOTICEREF GRPC_SHADOW_d2i_NOTICEREF
+#define d2i_OTHERNAME GRPC_SHADOW_d2i_OTHERNAME
+#define d2i_PKCS12 GRPC_SHADOW_d2i_PKCS12
+#define d2i_PKCS12_bio GRPC_SHADOW_d2i_PKCS12_bio
+#define d2i_PKCS12_fp GRPC_SHADOW_d2i_PKCS12_fp
+#define d2i_PKCS7 GRPC_SHADOW_d2i_PKCS7
+#define d2i_PKCS7_bio GRPC_SHADOW_d2i_PKCS7_bio
+#define d2i_PKCS8_bio GRPC_SHADOW_d2i_PKCS8_bio
+#define d2i_PKCS8_fp GRPC_SHADOW_d2i_PKCS8_fp
+#define d2i_PKCS8PrivateKey_bio GRPC_SHADOW_d2i_PKCS8PrivateKey_bio
+#define d2i_PKCS8PrivateKey_fp GRPC_SHADOW_d2i_PKCS8PrivateKey_fp
+#define d2i_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO
+#define d2i_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_bio
+#define d2i_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_fp
+#define d2i_PKEY_USAGE_PERIOD GRPC_SHADOW_d2i_PKEY_USAGE_PERIOD
+#define d2i_POLICYINFO GRPC_SHADOW_d2i_POLICYINFO
+#define d2i_POLICYQUALINFO GRPC_SHADOW_d2i_POLICYQUALINFO
+#define d2i_PrivateKey GRPC_SHADOW_d2i_PrivateKey
+#define d2i_PrivateKey_bio GRPC_SHADOW_d2i_PrivateKey_bio
+#define d2i_PrivateKey_fp GRPC_SHADOW_d2i_PrivateKey_fp
+#define d2i_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_d2i_PROXY_CERT_INFO_EXTENSION
+#define d2i_PROXY_POLICY GRPC_SHADOW_d2i_PROXY_POLICY
+#define d2i_PUBKEY GRPC_SHADOW_d2i_PUBKEY
+#define d2i_PUBKEY_bio GRPC_SHADOW_d2i_PUBKEY_bio
+#define d2i_PUBKEY_fp GRPC_SHADOW_d2i_PUBKEY_fp
+#define d2i_PublicKey GRPC_SHADOW_d2i_PublicKey
+#define d2i_RSAPrivateKey GRPC_SHADOW_d2i_RSAPrivateKey
+#define d2i_RSAPrivateKey_bio GRPC_SHADOW_d2i_RSAPrivateKey_bio
+#define d2i_RSAPrivateKey_fp GRPC_SHADOW_d2i_RSAPrivateKey_fp
+#define d2i_RSA_PSS_PARAMS GRPC_SHADOW_d2i_RSA_PSS_PARAMS
+#define d2i_RSA_PUBKEY GRPC_SHADOW_d2i_RSA_PUBKEY
+#define d2i_RSA_PUBKEY_bio GRPC_SHADOW_d2i_RSA_PUBKEY_bio
+#define d2i_RSA_PUBKEY_fp GRPC_SHADOW_d2i_RSA_PUBKEY_fp
+#define d2i_RSAPublicKey GRPC_SHADOW_d2i_RSAPublicKey
+#define d2i_RSAPublicKey_bio GRPC_SHADOW_d2i_RSAPublicKey_bio
+#define d2i_RSAPublicKey_fp GRPC_SHADOW_d2i_RSAPublicKey_fp
+#define d2i_SSL_SESSION GRPC_SHADOW_d2i_SSL_SESSION
+#define d2i_SSL_SESSION_bio GRPC_SHADOW_d2i_SSL_SESSION_bio
+#define d2i_SXNET GRPC_SHADOW_d2i_SXNET
+#define d2i_SXNETID GRPC_SHADOW_d2i_SXNETID
+#define d2i_USERNOTICE GRPC_SHADOW_d2i_USERNOTICE
+#define d2i_X509 GRPC_SHADOW_d2i_X509
+#define d2i_X509_ALGOR GRPC_SHADOW_d2i_X509_ALGOR
+#define d2i_X509_ALGORS GRPC_SHADOW_d2i_X509_ALGORS
+#define d2i_X509_ATTRIBUTE GRPC_SHADOW_d2i_X509_ATTRIBUTE
+#define d2i_X509_AUX GRPC_SHADOW_d2i_X509_AUX
+#define d2i_X509_bio GRPC_SHADOW_d2i_X509_bio
+#define d2i_X509_CERT_AUX GRPC_SHADOW_d2i_X509_CERT_AUX
+#define d2i_X509_CINF GRPC_SHADOW_d2i_X509_CINF
+#define d2i_X509_CRL GRPC_SHADOW_d2i_X509_CRL
+#define d2i_X509_CRL_bio GRPC_SHADOW_d2i_X509_CRL_bio
+#define d2i_X509_CRL_fp GRPC_SHADOW_d2i_X509_CRL_fp
+#define d2i_X509_CRL_INFO GRPC_SHADOW_d2i_X509_CRL_INFO
+#define d2i_X509_EXTENSION GRPC_SHADOW_d2i_X509_EXTENSION
+#define d2i_X509_EXTENSIONS GRPC_SHADOW_d2i_X509_EXTENSIONS
+#define d2i_X509_fp GRPC_SHADOW_d2i_X509_fp
+#define d2i_X509_NAME GRPC_SHADOW_d2i_X509_NAME
+#define d2i_X509_NAME_ENTRY GRPC_SHADOW_d2i_X509_NAME_ENTRY
+#define d2i_X509_PUBKEY GRPC_SHADOW_d2i_X509_PUBKEY
+#define d2i_X509_REQ GRPC_SHADOW_d2i_X509_REQ
+#define d2i_X509_REQ_bio GRPC_SHADOW_d2i_X509_REQ_bio
+#define d2i_X509_REQ_fp GRPC_SHADOW_d2i_X509_REQ_fp
+#define d2i_X509_REQ_INFO GRPC_SHADOW_d2i_X509_REQ_INFO
+#define d2i_X509_REVOKED GRPC_SHADOW_d2i_X509_REVOKED
+#define d2i_X509_SIG GRPC_SHADOW_d2i_X509_SIG
+#define d2i_X509_VAL GRPC_SHADOW_d2i_X509_VAL
+#define DES_decrypt3 GRPC_SHADOW_DES_decrypt3
+#define DES_ecb3_encrypt GRPC_SHADOW_DES_ecb3_encrypt
+#define DES_ecb_encrypt GRPC_SHADOW_DES_ecb_encrypt
+#define DES_ede2_cbc_encrypt GRPC_SHADOW_DES_ede2_cbc_encrypt
+#define DES_ede3_cbc_encrypt GRPC_SHADOW_DES_ede3_cbc_encrypt
+#define DES_encrypt3 GRPC_SHADOW_DES_encrypt3
+#define DES_ncbc_encrypt GRPC_SHADOW_DES_ncbc_encrypt
+#define DES_set_key GRPC_SHADOW_DES_set_key
+#define DES_set_key_unchecked GRPC_SHADOW_DES_set_key_unchecked
+#define DES_set_odd_parity GRPC_SHADOW_DES_set_odd_parity
+#define DH_check GRPC_SHADOW_DH_check
+#define DH_check_pub_key GRPC_SHADOW_DH_check_pub_key
+#define DH_compute_key GRPC_SHADOW_DH_compute_key
+#define DH_free GRPC_SHADOW_DH_free
+#define DH_generate_key GRPC_SHADOW_DH_generate_key
+#define DH_generate_parameters_ex GRPC_SHADOW_DH_generate_parameters_ex
+#define DH_get0_key GRPC_SHADOW_DH_get0_key
+#define DH_get0_pqg GRPC_SHADOW_DH_get0_pqg
+#define DH_get_ex_data GRPC_SHADOW_DH_get_ex_data
+#define DH_get_ex_new_index GRPC_SHADOW_DH_get_ex_new_index
+#define DH_marshal_parameters GRPC_SHADOW_DH_marshal_parameters
+#define DH_new GRPC_SHADOW_DH_new
+#define DH_num_bits GRPC_SHADOW_DH_num_bits
+#define DHparams_dup GRPC_SHADOW_DHparams_dup
+#define DH_parse_parameters GRPC_SHADOW_DH_parse_parameters
+#define DH_set0_key GRPC_SHADOW_DH_set0_key
+#define DH_set0_pqg GRPC_SHADOW_DH_set0_pqg
+#define DH_set_ex_data GRPC_SHADOW_DH_set_ex_data
+#define DH_size GRPC_SHADOW_DH_size
+#define DH_up_ref GRPC_SHADOW_DH_up_ref
+#define DIRECTORYSTRING_free GRPC_SHADOW_DIRECTORYSTRING_free
+#define DIRECTORYSTRING_it GRPC_SHADOW_DIRECTORYSTRING_it
+#define DIRECTORYSTRING_new GRPC_SHADOW_DIRECTORYSTRING_new
+#define DISPLAYTEXT_free GRPC_SHADOW_DISPLAYTEXT_free
+#define DISPLAYTEXT_it GRPC_SHADOW_DISPLAYTEXT_it
+#define DISPLAYTEXT_new GRPC_SHADOW_DISPLAYTEXT_new
+#define DIST_POINT_free GRPC_SHADOW_DIST_POINT_free
+#define DIST_POINT_it GRPC_SHADOW_DIST_POINT_it
+#define DIST_POINT_NAME_free GRPC_SHADOW_DIST_POINT_NAME_free
+#define DIST_POINT_NAME_it GRPC_SHADOW_DIST_POINT_NAME_it
+#define DIST_POINT_NAME_new GRPC_SHADOW_DIST_POINT_NAME_new
+#define DIST_POINT_new GRPC_SHADOW_DIST_POINT_new
+#define DIST_POINT_set_dpname GRPC_SHADOW_DIST_POINT_set_dpname
+#define dsa_asn1_meth GRPC_SHADOW_dsa_asn1_meth
+#define DSA_check_signature GRPC_SHADOW_DSA_check_signature
+#define DSA_do_check_signature GRPC_SHADOW_DSA_do_check_signature
+#define DSA_do_sign GRPC_SHADOW_DSA_do_sign
+#define DSA_do_verify GRPC_SHADOW_DSA_do_verify
+#define DSA_dup_DH GRPC_SHADOW_DSA_dup_DH
+#define DSA_free GRPC_SHADOW_DSA_free
+#define DSA_generate_key GRPC_SHADOW_DSA_generate_key
+#define DSA_generate_parameters_ex GRPC_SHADOW_DSA_generate_parameters_ex
+#define DSA_get0_key GRPC_SHADOW_DSA_get0_key
+#define DSA_get0_pqg GRPC_SHADOW_DSA_get0_pqg
+#define DSA_get_ex_data GRPC_SHADOW_DSA_get_ex_data
+#define DSA_get_ex_new_index GRPC_SHADOW_DSA_get_ex_new_index
+#define DSA_marshal_parameters GRPC_SHADOW_DSA_marshal_parameters
+#define DSA_marshal_private_key GRPC_SHADOW_DSA_marshal_private_key
+#define DSA_marshal_public_key GRPC_SHADOW_DSA_marshal_public_key
+#define DSA_new GRPC_SHADOW_DSA_new
+#define DSAparams_dup GRPC_SHADOW_DSAparams_dup
+#define DSA_parse_parameters GRPC_SHADOW_DSA_parse_parameters
+#define DSA_parse_private_key GRPC_SHADOW_DSA_parse_private_key
+#define DSA_parse_public_key GRPC_SHADOW_DSA_parse_public_key
+#define DSA_set0_key GRPC_SHADOW_DSA_set0_key
+#define DSA_set0_pqg GRPC_SHADOW_DSA_set0_pqg
+#define DSA_set_ex_data GRPC_SHADOW_DSA_set_ex_data
+#define DSA_SIG_free GRPC_SHADOW_DSA_SIG_free
+#define DSA_SIG_marshal GRPC_SHADOW_DSA_SIG_marshal
+#define DSA_sign GRPC_SHADOW_DSA_sign
+#define DSA_SIG_new GRPC_SHADOW_DSA_SIG_new
+#define DSA_SIG_parse GRPC_SHADOW_DSA_SIG_parse
+#define DSA_size GRPC_SHADOW_DSA_size
+#define DSA_up_ref GRPC_SHADOW_DSA_up_ref
+#define DSA_verify GRPC_SHADOW_DSA_verify
+#define DTLS_client_method GRPC_SHADOW_DTLS_client_method
+#define DTLS_method GRPC_SHADOW_DTLS_method
+#define DTLS_server_method GRPC_SHADOW_DTLS_server_method
+#define DTLSv1_2_client_method GRPC_SHADOW_DTLSv1_2_client_method
+#define DTLSv1_2_method GRPC_SHADOW_DTLSv1_2_method
+#define DTLSv1_2_server_method GRPC_SHADOW_DTLSv1_2_server_method
+#define DTLSv1_client_method GRPC_SHADOW_DTLSv1_client_method
+#define DTLSv1_get_timeout GRPC_SHADOW_DTLSv1_get_timeout
+#define DTLSv1_handle_timeout GRPC_SHADOW_DTLSv1_handle_timeout
+#define DTLSv1_method GRPC_SHADOW_DTLSv1_method
+#define DTLSv1_server_method GRPC_SHADOW_DTLSv1_server_method
+#define DTLSv1_set_initial_timeout_duration GRPC_SHADOW_DTLSv1_set_initial_timeout_duration
+#define DTLS_with_buffers_method GRPC_SHADOW_DTLS_with_buffers_method
+#define ec_asn1_meth GRPC_SHADOW_ec_asn1_meth
+#define ec_bignum_to_felem GRPC_SHADOW_ec_bignum_to_felem
+#define ec_bignum_to_scalar GRPC_SHADOW_ec_bignum_to_scalar
+#define ec_cmp_x_coordinate GRPC_SHADOW_ec_cmp_x_coordinate
+#define ec_compute_wNAF GRPC_SHADOW_ec_compute_wNAF
+#define EC_curve_nid2nist GRPC_SHADOW_EC_curve_nid2nist
+#define EC_curve_nist2nid GRPC_SHADOW_EC_curve_nist2nid
+#define ECDH_compute_key GRPC_SHADOW_ECDH_compute_key
+#define ECDH_compute_key_fips GRPC_SHADOW_ECDH_compute_key_fips
+#define ECDSA_do_sign GRPC_SHADOW_ECDSA_do_sign
+#define ECDSA_do_verify GRPC_SHADOW_ECDSA_do_verify
+#define ECDSA_SIG_free GRPC_SHADOW_ECDSA_SIG_free
+#define ECDSA_SIG_from_bytes GRPC_SHADOW_ECDSA_SIG_from_bytes
+#define ECDSA_SIG_get0 GRPC_SHADOW_ECDSA_SIG_get0
+#define ECDSA_SIG_marshal GRPC_SHADOW_ECDSA_SIG_marshal
+#define ECDSA_SIG_max_len GRPC_SHADOW_ECDSA_SIG_max_len
+#define ECDSA_sign GRPC_SHADOW_ECDSA_sign
+#define ECDSA_SIG_new GRPC_SHADOW_ECDSA_SIG_new
+#define ECDSA_SIG_parse GRPC_SHADOW_ECDSA_SIG_parse
+#define ECDSA_SIG_set0 GRPC_SHADOW_ECDSA_SIG_set0
+#define ECDSA_SIG_to_bytes GRPC_SHADOW_ECDSA_SIG_to_bytes
+#define ECDSA_size GRPC_SHADOW_ECDSA_size
+#define ECDSA_verify GRPC_SHADOW_ECDSA_verify
+#define ec_felem_add GRPC_SHADOW_ec_felem_add
+#define ec_felem_equal GRPC_SHADOW_ec_felem_equal
+#define ec_felem_neg GRPC_SHADOW_ec_felem_neg
+#define ec_felem_non_zero_mask GRPC_SHADOW_ec_felem_non_zero_mask
+#define ec_felem_select GRPC_SHADOW_ec_felem_select
+#define ec_felem_sub GRPC_SHADOW_ec_felem_sub
+#define ec_felem_to_bignum GRPC_SHADOW_ec_felem_to_bignum
+#define EC_get_builtin_curves GRPC_SHADOW_EC_get_builtin_curves
+#define ec_get_x_coordinate_as_scalar GRPC_SHADOW_ec_get_x_coordinate_as_scalar
+#define ec_GFp_mont_add GRPC_SHADOW_ec_GFp_mont_add
+#define ec_GFp_mont_bignum_to_felem GRPC_SHADOW_ec_GFp_mont_bignum_to_felem
+#define ec_GFp_mont_dbl GRPC_SHADOW_ec_GFp_mont_dbl
+#define ec_GFp_mont_felem_mul GRPC_SHADOW_ec_GFp_mont_felem_mul
+#define ec_GFp_mont_felem_sqr GRPC_SHADOW_ec_GFp_mont_felem_sqr
+#define ec_GFp_mont_felem_to_bignum GRPC_SHADOW_ec_GFp_mont_felem_to_bignum
+#define ec_GFp_mont_group_finish GRPC_SHADOW_ec_GFp_mont_group_finish
+#define ec_GFp_mont_group_init GRPC_SHADOW_ec_GFp_mont_group_init
+#define ec_GFp_mont_group_set_curve GRPC_SHADOW_ec_GFp_mont_group_set_curve
+#define EC_GFp_mont_method GRPC_SHADOW_EC_GFp_mont_method
+#define ec_GFp_mont_mul GRPC_SHADOW_ec_GFp_mont_mul
+#define ec_GFp_mont_mul_base GRPC_SHADOW_ec_GFp_mont_mul_base
+#define ec_GFp_mont_mul_public GRPC_SHADOW_ec_GFp_mont_mul_public
+#define EC_GFp_nistp224_method GRPC_SHADOW_EC_GFp_nistp224_method
+#define EC_GFp_nistp256_method GRPC_SHADOW_EC_GFp_nistp256_method
+#define ec_GFp_nistp_recode_scalar_bits GRPC_SHADOW_ec_GFp_nistp_recode_scalar_bits
+#define EC_GFp_nistz256_method GRPC_SHADOW_EC_GFp_nistz256_method
+#define ec_GFp_simple_cmp GRPC_SHADOW_ec_GFp_simple_cmp
+#define ec_GFp_simple_cmp_x_coordinate GRPC_SHADOW_ec_GFp_simple_cmp_x_coordinate
+#define ec_GFp_simple_group_finish GRPC_SHADOW_ec_GFp_simple_group_finish
+#define ec_GFp_simple_group_get_curve GRPC_SHADOW_ec_GFp_simple_group_get_curve
+#define ec_GFp_simple_group_init GRPC_SHADOW_ec_GFp_simple_group_init
+#define ec_GFp_simple_group_set_curve GRPC_SHADOW_ec_GFp_simple_group_set_curve
+#define ec_GFp_simple_invert GRPC_SHADOW_ec_GFp_simple_invert
+#define ec_GFp_simple_is_at_infinity GRPC_SHADOW_ec_GFp_simple_is_at_infinity
+#define ec_GFp_simple_is_on_curve GRPC_SHADOW_ec_GFp_simple_is_on_curve
+#define ec_GFp_simple_mont_inv_mod_ord_vartime GRPC_SHADOW_ec_GFp_simple_mont_inv_mod_ord_vartime
+#define ec_GFp_simple_point_copy GRPC_SHADOW_ec_GFp_simple_point_copy
+#define ec_GFp_simple_point_init GRPC_SHADOW_ec_GFp_simple_point_init
+#define ec_GFp_simple_point_set_affine_coordinates GRPC_SHADOW_ec_GFp_simple_point_set_affine_coordinates
+#define ec_GFp_simple_point_set_to_infinity GRPC_SHADOW_ec_GFp_simple_point_set_to_infinity
+#define EC_GROUP_cmp GRPC_SHADOW_EC_GROUP_cmp
+#define EC_GROUP_dup GRPC_SHADOW_EC_GROUP_dup
+#define EC_GROUP_free GRPC_SHADOW_EC_GROUP_free
+#define EC_GROUP_get0_generator GRPC_SHADOW_EC_GROUP_get0_generator
+#define EC_GROUP_get0_order GRPC_SHADOW_EC_GROUP_get0_order
+#define EC_GROUP_get_cofactor GRPC_SHADOW_EC_GROUP_get_cofactor
+#define EC_GROUP_get_curve_GFp GRPC_SHADOW_EC_GROUP_get_curve_GFp
+#define EC_GROUP_get_curve_name GRPC_SHADOW_EC_GROUP_get_curve_name
+#define EC_GROUP_get_degree GRPC_SHADOW_EC_GROUP_get_degree
+#define EC_GROUP_get_order GRPC_SHADOW_EC_GROUP_get_order
+#define EC_GROUP_method_of GRPC_SHADOW_EC_GROUP_method_of
+#define ec_group_new GRPC_SHADOW_ec_group_new
+#define EC_GROUP_new_by_curve_name GRPC_SHADOW_EC_GROUP_new_by_curve_name
+#define EC_GROUP_new_curve_GFp GRPC_SHADOW_EC_GROUP_new_curve_GFp
+#define EC_GROUP_order_bits GRPC_SHADOW_EC_GROUP_order_bits
+#define EC_GROUP_set_asn1_flag GRPC_SHADOW_EC_GROUP_set_asn1_flag
+#define EC_GROUP_set_generator GRPC_SHADOW_EC_GROUP_set_generator
+#define EC_GROUP_set_point_conversion_form GRPC_SHADOW_EC_GROUP_set_point_conversion_form
+#define EC_KEY_check_fips GRPC_SHADOW_EC_KEY_check_fips
+#define EC_KEY_check_key GRPC_SHADOW_EC_KEY_check_key
+#define EC_KEY_derive_from_secret GRPC_SHADOW_EC_KEY_derive_from_secret
+#define EC_KEY_dup GRPC_SHADOW_EC_KEY_dup
+#define EC_KEY_free GRPC_SHADOW_EC_KEY_free
+#define EC_KEY_generate_key GRPC_SHADOW_EC_KEY_generate_key
+#define EC_KEY_generate_key_fips GRPC_SHADOW_EC_KEY_generate_key_fips
+#define EC_KEY_get0_group GRPC_SHADOW_EC_KEY_get0_group
+#define EC_KEY_get0_private_key GRPC_SHADOW_EC_KEY_get0_private_key
+#define EC_KEY_get0_public_key GRPC_SHADOW_EC_KEY_get0_public_key
+#define EC_KEY_get_conv_form GRPC_SHADOW_EC_KEY_get_conv_form
+#define EC_KEY_get_enc_flags GRPC_SHADOW_EC_KEY_get_enc_flags
+#define EC_KEY_get_ex_data GRPC_SHADOW_EC_KEY_get_ex_data
+#define EC_KEY_get_ex_new_index GRPC_SHADOW_EC_KEY_get_ex_new_index
+#define EC_KEY_is_opaque GRPC_SHADOW_EC_KEY_is_opaque
+#define EC_KEY_key2buf GRPC_SHADOW_EC_KEY_key2buf
+#define EC_KEY_marshal_curve_name GRPC_SHADOW_EC_KEY_marshal_curve_name
+#define EC_KEY_marshal_private_key GRPC_SHADOW_EC_KEY_marshal_private_key
+#define EC_KEY_new GRPC_SHADOW_EC_KEY_new
+#define EC_KEY_new_by_curve_name GRPC_SHADOW_EC_KEY_new_by_curve_name
+#define EC_KEY_new_method GRPC_SHADOW_EC_KEY_new_method
+#define EC_KEY_parse_curve_name GRPC_SHADOW_EC_KEY_parse_curve_name
+#define EC_KEY_parse_parameters GRPC_SHADOW_EC_KEY_parse_parameters
+#define EC_KEY_parse_private_key GRPC_SHADOW_EC_KEY_parse_private_key
+#define EC_KEY_set_asn1_flag GRPC_SHADOW_EC_KEY_set_asn1_flag
+#define EC_KEY_set_conv_form GRPC_SHADOW_EC_KEY_set_conv_form
+#define EC_KEY_set_enc_flags GRPC_SHADOW_EC_KEY_set_enc_flags
+#define EC_KEY_set_ex_data GRPC_SHADOW_EC_KEY_set_ex_data
+#define EC_KEY_set_group GRPC_SHADOW_EC_KEY_set_group
+#define EC_KEY_set_private_key GRPC_SHADOW_EC_KEY_set_private_key
+#define EC_KEY_set_public_key GRPC_SHADOW_EC_KEY_set_public_key
+#define EC_KEY_set_public_key_affine_coordinates GRPC_SHADOW_EC_KEY_set_public_key_affine_coordinates
+#define EC_KEY_up_ref GRPC_SHADOW_EC_KEY_up_ref
+#define EC_METHOD_get_field_type GRPC_SHADOW_EC_METHOD_get_field_type
+#define ec_pkey_meth GRPC_SHADOW_ec_pkey_meth
+#define ecp_nistz256_avx2_select_w7 GRPC_SHADOW_ecp_nistz256_avx2_select_w7
+#define ecp_nistz256_mul_mont GRPC_SHADOW_ecp_nistz256_mul_mont
+#define ecp_nistz256_neg GRPC_SHADOW_ecp_nistz256_neg
+#define ecp_nistz256_ord_mul_mont GRPC_SHADOW_ecp_nistz256_ord_mul_mont
+#define ecp_nistz256_ord_sqr_mont GRPC_SHADOW_ecp_nistz256_ord_sqr_mont
+#define ecp_nistz256_point_add GRPC_SHADOW_ecp_nistz256_point_add
+#define ecp_nistz256_point_add_affine GRPC_SHADOW_ecp_nistz256_point_add_affine
+#define ecp_nistz256_point_double GRPC_SHADOW_ecp_nistz256_point_double
+#define ecp_nistz256_select_w5 GRPC_SHADOW_ecp_nistz256_select_w5
+#define ecp_nistz256_select_w7 GRPC_SHADOW_ecp_nistz256_select_w7
+#define ecp_nistz256_sqr_mont GRPC_SHADOW_ecp_nistz256_sqr_mont
+#define EC_POINT_add GRPC_SHADOW_EC_POINT_add
+#define EC_POINT_clear_free GRPC_SHADOW_EC_POINT_clear_free
+#define EC_POINT_cmp GRPC_SHADOW_EC_POINT_cmp
+#define EC_POINT_copy GRPC_SHADOW_EC_POINT_copy
+#define EC_POINT_dbl GRPC_SHADOW_EC_POINT_dbl
+#define EC_POINT_dup GRPC_SHADOW_EC_POINT_dup
+#define EC_POINT_free GRPC_SHADOW_EC_POINT_free
+#define ec_point_get_affine_coordinate_bytes GRPC_SHADOW_ec_point_get_affine_coordinate_bytes
+#define EC_POINT_get_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_get_affine_coordinates_GFp
+#define EC_POINT_invert GRPC_SHADOW_EC_POINT_invert
+#define EC_POINT_is_at_infinity GRPC_SHADOW_EC_POINT_is_at_infinity
+#define EC_POINT_is_on_curve GRPC_SHADOW_EC_POINT_is_on_curve
+#define EC_POINT_mul GRPC_SHADOW_EC_POINT_mul
+#define ec_point_mul_scalar GRPC_SHADOW_ec_point_mul_scalar
+#define ec_point_mul_scalar_base GRPC_SHADOW_ec_point_mul_scalar_base
+#define ec_point_mul_scalar_public GRPC_SHADOW_ec_point_mul_scalar_public
+#define EC_POINT_new GRPC_SHADOW_EC_POINT_new
+#define EC_POINT_oct2point GRPC_SHADOW_EC_POINT_oct2point
+#define EC_POINT_point2cbb GRPC_SHADOW_EC_POINT_point2cbb
+#define EC_POINT_point2oct GRPC_SHADOW_EC_POINT_point2oct
+#define EC_POINT_set_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_set_affine_coordinates_GFp
+#define EC_POINT_set_compressed_coordinates_GFp GRPC_SHADOW_EC_POINT_set_compressed_coordinates_GFp
+#define EC_POINT_set_to_infinity GRPC_SHADOW_EC_POINT_set_to_infinity
+#define ec_random_nonzero_scalar GRPC_SHADOW_ec_random_nonzero_scalar
+#define ec_scalar_add GRPC_SHADOW_ec_scalar_add
+#define ec_scalar_equal_vartime GRPC_SHADOW_ec_scalar_equal_vartime
+#define ec_scalar_from_montgomery GRPC_SHADOW_ec_scalar_from_montgomery
+#define ec_scalar_inv_montgomery GRPC_SHADOW_ec_scalar_inv_montgomery
+#define ec_scalar_inv_montgomery_vartime GRPC_SHADOW_ec_scalar_inv_montgomery_vartime
+#define ec_scalar_is_zero GRPC_SHADOW_ec_scalar_is_zero
+#define ec_scalar_mul_montgomery GRPC_SHADOW_ec_scalar_mul_montgomery
+#define ec_scalar_to_montgomery GRPC_SHADOW_ec_scalar_to_montgomery
+#define ec_simple_scalar_inv_montgomery GRPC_SHADOW_ec_simple_scalar_inv_montgomery
+#define ed25519_asn1_meth GRPC_SHADOW_ed25519_asn1_meth
+#define ED25519_keypair GRPC_SHADOW_ED25519_keypair
+#define ED25519_keypair_from_seed GRPC_SHADOW_ED25519_keypair_from_seed
+#define ed25519_pkey_meth GRPC_SHADOW_ed25519_pkey_meth
+#define ED25519_sign GRPC_SHADOW_ED25519_sign
+#define ED25519_verify GRPC_SHADOW_ED25519_verify
+#define EDIPARTYNAME_free GRPC_SHADOW_EDIPARTYNAME_free
+#define EDIPARTYNAME_it GRPC_SHADOW_EDIPARTYNAME_it
+#define EDIPARTYNAME_new GRPC_SHADOW_EDIPARTYNAME_new
+#define ENGINE_free GRPC_SHADOW_ENGINE_free
+#define ENGINE_get_ECDSA_method GRPC_SHADOW_ENGINE_get_ECDSA_method
+#define ENGINE_get_RSA_method GRPC_SHADOW_ENGINE_get_RSA_method
+#define ENGINE_load_builtin_engines GRPC_SHADOW_ENGINE_load_builtin_engines
+#define ENGINE_new GRPC_SHADOW_ENGINE_new
+#define ENGINE_register_all_complete GRPC_SHADOW_ENGINE_register_all_complete
+#define ENGINE_set_ECDSA_method GRPC_SHADOW_ENGINE_set_ECDSA_method
+#define ENGINE_set_RSA_method GRPC_SHADOW_ENGINE_set_RSA_method
+#define ERR_add_error_data GRPC_SHADOW_ERR_add_error_data
+#define ERR_add_error_dataf GRPC_SHADOW_ERR_add_error_dataf
+#define ERR_clear_error GRPC_SHADOW_ERR_clear_error
+#define ERR_clear_system_error GRPC_SHADOW_ERR_clear_system_error
+#define ERR_error_string GRPC_SHADOW_ERR_error_string
+#define ERR_error_string_n GRPC_SHADOW_ERR_error_string_n
+#define ERR_free_strings GRPC_SHADOW_ERR_free_strings
+#define ERR_func_error_string GRPC_SHADOW_ERR_func_error_string
+#define ERR_get_error GRPC_SHADOW_ERR_get_error
+#define ERR_get_error_line GRPC_SHADOW_ERR_get_error_line
+#define ERR_get_error_line_data GRPC_SHADOW_ERR_get_error_line_data
+#define ERR_get_next_error_library GRPC_SHADOW_ERR_get_next_error_library
+#define ERR_lib_error_string GRPC_SHADOW_ERR_lib_error_string
+#define ERR_load_BIO_strings GRPC_SHADOW_ERR_load_BIO_strings
+#define ERR_load_crypto_strings GRPC_SHADOW_ERR_load_crypto_strings
+#define ERR_load_ERR_strings GRPC_SHADOW_ERR_load_ERR_strings
+#define ERR_load_RAND_strings GRPC_SHADOW_ERR_load_RAND_strings
+#define ERR_load_SSL_strings GRPC_SHADOW_ERR_load_SSL_strings
+#define ERR_peek_error GRPC_SHADOW_ERR_peek_error
+#define ERR_peek_error_line GRPC_SHADOW_ERR_peek_error_line
+#define ERR_peek_error_line_data GRPC_SHADOW_ERR_peek_error_line_data
+#define ERR_peek_last_error GRPC_SHADOW_ERR_peek_last_error
+#define ERR_peek_last_error_line GRPC_SHADOW_ERR_peek_last_error_line
+#define ERR_peek_last_error_line_data GRPC_SHADOW_ERR_peek_last_error_line_data
+#define ERR_pop_to_mark GRPC_SHADOW_ERR_pop_to_mark
+#define ERR_print_errors GRPC_SHADOW_ERR_print_errors
+#define ERR_print_errors_cb GRPC_SHADOW_ERR_print_errors_cb
+#define ERR_print_errors_fp GRPC_SHADOW_ERR_print_errors_fp
+#define ERR_put_error GRPC_SHADOW_ERR_put_error
+#define ERR_reason_error_string GRPC_SHADOW_ERR_reason_error_string
+#define ERR_remove_state GRPC_SHADOW_ERR_remove_state
+#define ERR_remove_thread_state GRPC_SHADOW_ERR_remove_thread_state
+#define ERR_restore_state GRPC_SHADOW_ERR_restore_state
+#define ERR_save_state GRPC_SHADOW_ERR_save_state
+#define ERR_SAVE_STATE_free GRPC_SHADOW_ERR_SAVE_STATE_free
+#define ERR_set_mark GRPC_SHADOW_ERR_set_mark
+#define EVP_add_cipher_alias GRPC_SHADOW_EVP_add_cipher_alias
+#define EVP_add_digest GRPC_SHADOW_EVP_add_digest
+#define EVP_aead_aes_128_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls
+#define EVP_aead_aes_128_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_128_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha256_tls
+#define EVP_aead_aes_128_ccm_bluetooth GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth
+#define EVP_aead_aes_128_ccm_bluetooth_8 GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth_8
+#define EVP_aead_aes_128_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_128_ctr_hmac_sha256
+#define EVP_aead_aes_128_gcm GRPC_SHADOW_EVP_aead_aes_128_gcm
+#define EVP_aead_aes_128_gcm_siv GRPC_SHADOW_EVP_aead_aes_128_gcm_siv
+#define EVP_aead_aes_128_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls12
+#define EVP_aead_aes_128_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls13
+#define EVP_aead_aes_192_gcm GRPC_SHADOW_EVP_aead_aes_192_gcm
+#define EVP_aead_aes_256_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls
+#define EVP_aead_aes_256_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_256_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha256_tls
+#define EVP_aead_aes_256_cbc_sha384_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha384_tls
+#define EVP_aead_aes_256_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_256_ctr_hmac_sha256
+#define EVP_aead_aes_256_gcm GRPC_SHADOW_EVP_aead_aes_256_gcm
+#define EVP_aead_aes_256_gcm_siv GRPC_SHADOW_EVP_aead_aes_256_gcm_siv
+#define EVP_aead_aes_256_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls12
+#define EVP_aead_aes_256_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls13
+#define EVP_aead_chacha20_poly1305 GRPC_SHADOW_EVP_aead_chacha20_poly1305
+#define EVP_AEAD_CTX_aead GRPC_SHADOW_EVP_AEAD_CTX_aead
+#define EVP_AEAD_CTX_cleanup GRPC_SHADOW_EVP_AEAD_CTX_cleanup
+#define EVP_AEAD_CTX_free GRPC_SHADOW_EVP_AEAD_CTX_free
+#define EVP_AEAD_CTX_get_iv GRPC_SHADOW_EVP_AEAD_CTX_get_iv
+#define EVP_AEAD_CTX_init GRPC_SHADOW_EVP_AEAD_CTX_init
+#define EVP_AEAD_CTX_init_with_direction GRPC_SHADOW_EVP_AEAD_CTX_init_with_direction
+#define EVP_AEAD_CTX_new GRPC_SHADOW_EVP_AEAD_CTX_new
+#define EVP_AEAD_CTX_open GRPC_SHADOW_EVP_AEAD_CTX_open
+#define EVP_AEAD_CTX_open_gather GRPC_SHADOW_EVP_AEAD_CTX_open_gather
+#define EVP_AEAD_CTX_seal GRPC_SHADOW_EVP_AEAD_CTX_seal
+#define EVP_AEAD_CTX_seal_scatter GRPC_SHADOW_EVP_AEAD_CTX_seal_scatter
+#define EVP_AEAD_CTX_tag_len GRPC_SHADOW_EVP_AEAD_CTX_tag_len
+#define EVP_AEAD_CTX_zero GRPC_SHADOW_EVP_AEAD_CTX_zero
+#define EVP_aead_des_ede3_cbc_sha1_tls GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls
+#define EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv
+#define EVP_AEAD_key_length GRPC_SHADOW_EVP_AEAD_key_length
+#define EVP_AEAD_max_overhead GRPC_SHADOW_EVP_AEAD_max_overhead
+#define EVP_AEAD_max_tag_len GRPC_SHADOW_EVP_AEAD_max_tag_len
+#define EVP_AEAD_nonce_length GRPC_SHADOW_EVP_AEAD_nonce_length
+#define EVP_aead_null_sha1_tls GRPC_SHADOW_EVP_aead_null_sha1_tls
+#define EVP_aead_xchacha20_poly1305 GRPC_SHADOW_EVP_aead_xchacha20_poly1305
+#define EVP_aes_128_cbc GRPC_SHADOW_EVP_aes_128_cbc
+#define EVP_aes_128_ctr GRPC_SHADOW_EVP_aes_128_ctr
+#define EVP_aes_128_ecb GRPC_SHADOW_EVP_aes_128_ecb
+#define EVP_aes_128_gcm GRPC_SHADOW_EVP_aes_128_gcm
+#define EVP_aes_128_ofb GRPC_SHADOW_EVP_aes_128_ofb
+#define EVP_aes_192_cbc GRPC_SHADOW_EVP_aes_192_cbc
+#define EVP_aes_192_ctr GRPC_SHADOW_EVP_aes_192_ctr
+#define EVP_aes_192_ecb GRPC_SHADOW_EVP_aes_192_ecb
+#define EVP_aes_192_gcm GRPC_SHADOW_EVP_aes_192_gcm
+#define EVP_aes_192_ofb GRPC_SHADOW_EVP_aes_192_ofb
+#define EVP_aes_256_cbc GRPC_SHADOW_EVP_aes_256_cbc
+#define EVP_aes_256_ctr GRPC_SHADOW_EVP_aes_256_ctr
+#define EVP_aes_256_ecb GRPC_SHADOW_EVP_aes_256_ecb
+#define EVP_aes_256_gcm GRPC_SHADOW_EVP_aes_256_gcm
+#define EVP_aes_256_ofb GRPC_SHADOW_EVP_aes_256_ofb
+#define EVP_BytesToKey GRPC_SHADOW_EVP_BytesToKey
+#define EVP_Cipher GRPC_SHADOW_EVP_Cipher
+#define EVP_CIPHER_block_size GRPC_SHADOW_EVP_CIPHER_block_size
+#define EVP_CIPHER_CTX_block_size GRPC_SHADOW_EVP_CIPHER_CTX_block_size
+#define EVP_CIPHER_CTX_cipher GRPC_SHADOW_EVP_CIPHER_CTX_cipher
+#define EVP_CIPHER_CTX_cleanup GRPC_SHADOW_EVP_CIPHER_CTX_cleanup
+#define EVP_CIPHER_CTX_copy GRPC_SHADOW_EVP_CIPHER_CTX_copy
+#define EVP_CIPHER_CTX_ctrl GRPC_SHADOW_EVP_CIPHER_CTX_ctrl
+#define EVP_CIPHER_CTX_encrypting GRPC_SHADOW_EVP_CIPHER_CTX_encrypting
+#define EVP_CIPHER_CTX_flags GRPC_SHADOW_EVP_CIPHER_CTX_flags
+#define EVP_CIPHER_CTX_free GRPC_SHADOW_EVP_CIPHER_CTX_free
+#define EVP_CIPHER_CTX_get_app_data GRPC_SHADOW_EVP_CIPHER_CTX_get_app_data
+#define EVP_CIPHER_CTX_init GRPC_SHADOW_EVP_CIPHER_CTX_init
+#define EVP_CIPHER_CTX_iv_length GRPC_SHADOW_EVP_CIPHER_CTX_iv_length
+#define EVP_CIPHER_CTX_key_length GRPC_SHADOW_EVP_CIPHER_CTX_key_length
+#define EVP_CIPHER_CTX_mode GRPC_SHADOW_EVP_CIPHER_CTX_mode
+#define EVP_CIPHER_CTX_new GRPC_SHADOW_EVP_CIPHER_CTX_new
+#define EVP_CIPHER_CTX_nid GRPC_SHADOW_EVP_CIPHER_CTX_nid
+#define EVP_CIPHER_CTX_reset GRPC_SHADOW_EVP_CIPHER_CTX_reset
+#define EVP_CIPHER_CTX_set_app_data GRPC_SHADOW_EVP_CIPHER_CTX_set_app_data
+#define EVP_CIPHER_CTX_set_flags GRPC_SHADOW_EVP_CIPHER_CTX_set_flags
+#define EVP_CIPHER_CTX_set_key_length GRPC_SHADOW_EVP_CIPHER_CTX_set_key_length
+#define EVP_CIPHER_CTX_set_padding GRPC_SHADOW_EVP_CIPHER_CTX_set_padding
+#define EVP_CipherFinal_ex GRPC_SHADOW_EVP_CipherFinal_ex
+#define EVP_CIPHER_flags GRPC_SHADOW_EVP_CIPHER_flags
+#define EVP_CipherInit GRPC_SHADOW_EVP_CipherInit
+#define EVP_CipherInit_ex GRPC_SHADOW_EVP_CipherInit_ex
+#define EVP_CIPHER_iv_length GRPC_SHADOW_EVP_CIPHER_iv_length
+#define EVP_CIPHER_key_length GRPC_SHADOW_EVP_CIPHER_key_length
+#define EVP_CIPHER_mode GRPC_SHADOW_EVP_CIPHER_mode
+#define EVP_CIPHER_nid GRPC_SHADOW_EVP_CIPHER_nid
+#define EVP_CipherUpdate GRPC_SHADOW_EVP_CipherUpdate
+#define EVP_cleanup GRPC_SHADOW_EVP_cleanup
+#define EVP_DecodeBase64 GRPC_SHADOW_EVP_DecodeBase64
+#define EVP_DecodeBlock GRPC_SHADOW_EVP_DecodeBlock
+#define EVP_DecodedLength GRPC_SHADOW_EVP_DecodedLength
+#define EVP_DecodeFinal GRPC_SHADOW_EVP_DecodeFinal
+#define EVP_DecodeInit GRPC_SHADOW_EVP_DecodeInit
+#define EVP_DecodeUpdate GRPC_SHADOW_EVP_DecodeUpdate
+#define EVP_DecryptFinal_ex GRPC_SHADOW_EVP_DecryptFinal_ex
+#define EVP_DecryptInit GRPC_SHADOW_EVP_DecryptInit
+#define EVP_DecryptInit_ex GRPC_SHADOW_EVP_DecryptInit_ex
+#define EVP_DecryptUpdate GRPC_SHADOW_EVP_DecryptUpdate
+#define EVP_des_cbc GRPC_SHADOW_EVP_des_cbc
+#define EVP_des_ecb GRPC_SHADOW_EVP_des_ecb
+#define EVP_des_ede GRPC_SHADOW_EVP_des_ede
+#define EVP_des_ede3 GRPC_SHADOW_EVP_des_ede3
+#define EVP_des_ede3_cbc GRPC_SHADOW_EVP_des_ede3_cbc
+#define EVP_des_ede3_ecb GRPC_SHADOW_EVP_des_ede3_ecb
+#define EVP_des_ede_cbc GRPC_SHADOW_EVP_des_ede_cbc
+#define EVP_Digest GRPC_SHADOW_EVP_Digest
+#define EVP_DigestFinal GRPC_SHADOW_EVP_DigestFinal
+#define EVP_DigestFinal_ex GRPC_SHADOW_EVP_DigestFinal_ex
+#define EVP_DigestFinalXOF GRPC_SHADOW_EVP_DigestFinalXOF
+#define EVP_DigestInit GRPC_SHADOW_EVP_DigestInit
+#define EVP_DigestInit_ex GRPC_SHADOW_EVP_DigestInit_ex
+#define EVP_DigestSign GRPC_SHADOW_EVP_DigestSign
+#define EVP_DigestSignFinal GRPC_SHADOW_EVP_DigestSignFinal
+#define EVP_DigestSignInit GRPC_SHADOW_EVP_DigestSignInit
+#define EVP_DigestSignUpdate GRPC_SHADOW_EVP_DigestSignUpdate
+#define EVP_DigestUpdate GRPC_SHADOW_EVP_DigestUpdate
+#define EVP_DigestVerify GRPC_SHADOW_EVP_DigestVerify
+#define EVP_DigestVerifyFinal GRPC_SHADOW_EVP_DigestVerifyFinal
+#define EVP_DigestVerifyInit GRPC_SHADOW_EVP_DigestVerifyInit
+#define EVP_DigestVerifyUpdate GRPC_SHADOW_EVP_DigestVerifyUpdate
+#define EVP_enc_null GRPC_SHADOW_EVP_enc_null
+#define EVP_EncodeBlock GRPC_SHADOW_EVP_EncodeBlock
+#define EVP_EncodedLength GRPC_SHADOW_EVP_EncodedLength
+#define EVP_EncodeFinal GRPC_SHADOW_EVP_EncodeFinal
+#define EVP_EncodeInit GRPC_SHADOW_EVP_EncodeInit
+#define EVP_EncodeUpdate GRPC_SHADOW_EVP_EncodeUpdate
+#define EVP_EncryptFinal_ex GRPC_SHADOW_EVP_EncryptFinal_ex
+#define EVP_EncryptInit GRPC_SHADOW_EVP_EncryptInit
+#define EVP_EncryptInit_ex GRPC_SHADOW_EVP_EncryptInit_ex
+#define EVP_EncryptUpdate GRPC_SHADOW_EVP_EncryptUpdate
+#define EVP_get_cipherbyname GRPC_SHADOW_EVP_get_cipherbyname
+#define EVP_get_cipherbynid GRPC_SHADOW_EVP_get_cipherbynid
+#define EVP_get_digestbyname GRPC_SHADOW_EVP_get_digestbyname
+#define EVP_get_digestbynid GRPC_SHADOW_EVP_get_digestbynid
+#define EVP_get_digestbyobj GRPC_SHADOW_EVP_get_digestbyobj
+#define EVP_has_aes_hardware GRPC_SHADOW_EVP_has_aes_hardware
+#define EVP_marshal_digest_algorithm GRPC_SHADOW_EVP_marshal_digest_algorithm
+#define EVP_marshal_private_key GRPC_SHADOW_EVP_marshal_private_key
+#define EVP_marshal_public_key GRPC_SHADOW_EVP_marshal_public_key
+#define EVP_md4 GRPC_SHADOW_EVP_md4
+#define EVP_md5 GRPC_SHADOW_EVP_md5
+#define EVP_md5_sha1 GRPC_SHADOW_EVP_md5_sha1
+#define EVP_MD_block_size GRPC_SHADOW_EVP_MD_block_size
+#define EVP_MD_CTX_block_size GRPC_SHADOW_EVP_MD_CTX_block_size
+#define EVP_MD_CTX_cleanup GRPC_SHADOW_EVP_MD_CTX_cleanup
+#define EVP_MD_CTX_copy GRPC_SHADOW_EVP_MD_CTX_copy
+#define EVP_MD_CTX_copy_ex GRPC_SHADOW_EVP_MD_CTX_copy_ex
+#define EVP_MD_CTX_create GRPC_SHADOW_EVP_MD_CTX_create
+#define EVP_MD_CTX_destroy GRPC_SHADOW_EVP_MD_CTX_destroy
+#define EVP_MD_CTX_free GRPC_SHADOW_EVP_MD_CTX_free
+#define EVP_MD_CTX_init GRPC_SHADOW_EVP_MD_CTX_init
+#define EVP_MD_CTX_md GRPC_SHADOW_EVP_MD_CTX_md
+#define EVP_MD_CTX_new GRPC_SHADOW_EVP_MD_CTX_new
+#define EVP_MD_CTX_reset GRPC_SHADOW_EVP_MD_CTX_reset
+#define EVP_MD_CTX_size GRPC_SHADOW_EVP_MD_CTX_size
+#define EVP_MD_CTX_type GRPC_SHADOW_EVP_MD_CTX_type
+#define EVP_MD_flags GRPC_SHADOW_EVP_MD_flags
+#define EVP_MD_meth_get_flags GRPC_SHADOW_EVP_MD_meth_get_flags
+#define EVP_MD_size GRPC_SHADOW_EVP_MD_size
+#define EVP_MD_type GRPC_SHADOW_EVP_MD_type
+#define EVP_parse_digest_algorithm GRPC_SHADOW_EVP_parse_digest_algorithm
+#define EVP_parse_private_key GRPC_SHADOW_EVP_parse_private_key
+#define EVP_parse_public_key GRPC_SHADOW_EVP_parse_public_key
+#define EVP_PBE_scrypt GRPC_SHADOW_EVP_PBE_scrypt
+#define EVP_PKCS82PKEY GRPC_SHADOW_EVP_PKCS82PKEY
+#define EVP_PKEY2PKCS8 GRPC_SHADOW_EVP_PKEY2PKCS8
+#define EVP_PKEY_assign GRPC_SHADOW_EVP_PKEY_assign
+#define EVP_PKEY_assign_DSA GRPC_SHADOW_EVP_PKEY_assign_DSA
+#define EVP_PKEY_assign_EC_KEY GRPC_SHADOW_EVP_PKEY_assign_EC_KEY
+#define EVP_PKEY_assign_RSA GRPC_SHADOW_EVP_PKEY_assign_RSA
+#define EVP_PKEY_base_id GRPC_SHADOW_EVP_PKEY_base_id
+#define EVP_PKEY_bits GRPC_SHADOW_EVP_PKEY_bits
+#define EVP_PKEY_cmp GRPC_SHADOW_EVP_PKEY_cmp
+#define EVP_PKEY_cmp_parameters GRPC_SHADOW_EVP_PKEY_cmp_parameters
+#define EVP_PKEY_copy_parameters GRPC_SHADOW_EVP_PKEY_copy_parameters
+#define EVP_PKEY_CTX_ctrl GRPC_SHADOW_EVP_PKEY_CTX_ctrl
+#define EVP_PKEY_CTX_dup GRPC_SHADOW_EVP_PKEY_CTX_dup
+#define EVP_PKEY_CTX_free GRPC_SHADOW_EVP_PKEY_CTX_free
+#define EVP_PKEY_CTX_get0_pkey GRPC_SHADOW_EVP_PKEY_CTX_get0_pkey
+#define EVP_PKEY_CTX_get0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_get0_rsa_oaep_label
+#define EVP_PKEY_CTX_get_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_mgf1_md
+#define EVP_PKEY_CTX_get_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_oaep_md
+#define EVP_PKEY_CTX_get_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_padding
+#define EVP_PKEY_CTX_get_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_pss_saltlen
+#define EVP_PKEY_CTX_get_signature_md GRPC_SHADOW_EVP_PKEY_CTX_get_signature_md
+#define EVP_PKEY_CTX_new GRPC_SHADOW_EVP_PKEY_CTX_new
+#define EVP_PKEY_CTX_new_id GRPC_SHADOW_EVP_PKEY_CTX_new_id
+#define EVP_PKEY_CTX_set0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_set0_rsa_oaep_label
+#define EVP_PKEY_CTX_set_ec_param_enc GRPC_SHADOW_EVP_PKEY_CTX_set_ec_param_enc
+#define EVP_PKEY_CTX_set_ec_paramgen_curve_nid GRPC_SHADOW_EVP_PKEY_CTX_set_ec_paramgen_curve_nid
+#define EVP_PKEY_CTX_set_rsa_keygen_bits GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_bits
+#define EVP_PKEY_CTX_set_rsa_keygen_pubexp GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_pubexp
+#define EVP_PKEY_CTX_set_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_oaep_md
+#define EVP_PKEY_CTX_set_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_padding
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen
+#define EVP_PKEY_CTX_set_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_saltlen
+#define EVP_PKEY_CTX_set_signature_md GRPC_SHADOW_EVP_PKEY_CTX_set_signature_md
+#define EVP_PKEY_decrypt GRPC_SHADOW_EVP_PKEY_decrypt
+#define EVP_PKEY_decrypt_init GRPC_SHADOW_EVP_PKEY_decrypt_init
+#define EVP_PKEY_derive GRPC_SHADOW_EVP_PKEY_derive
+#define EVP_PKEY_derive_init GRPC_SHADOW_EVP_PKEY_derive_init
+#define EVP_PKEY_derive_set_peer GRPC_SHADOW_EVP_PKEY_derive_set_peer
+#define EVP_PKEY_encrypt GRPC_SHADOW_EVP_PKEY_encrypt
+#define EVP_PKEY_encrypt_init GRPC_SHADOW_EVP_PKEY_encrypt_init
+#define EVP_PKEY_free GRPC_SHADOW_EVP_PKEY_free
+#define EVP_PKEY_get0_DH GRPC_SHADOW_EVP_PKEY_get0_DH
+#define EVP_PKEY_get0_DSA GRPC_SHADOW_EVP_PKEY_get0_DSA
+#define EVP_PKEY_get0_EC_KEY GRPC_SHADOW_EVP_PKEY_get0_EC_KEY
+#define EVP_PKEY_get0_RSA GRPC_SHADOW_EVP_PKEY_get0_RSA
+#define EVP_PKEY_get1_DH GRPC_SHADOW_EVP_PKEY_get1_DH
+#define EVP_PKEY_get1_DSA GRPC_SHADOW_EVP_PKEY_get1_DSA
+#define EVP_PKEY_get1_EC_KEY GRPC_SHADOW_EVP_PKEY_get1_EC_KEY
+#define EVP_PKEY_get1_RSA GRPC_SHADOW_EVP_PKEY_get1_RSA
+#define EVP_PKEY_get1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_get1_tls_encodedpoint
+#define EVP_PKEY_get_raw_private_key GRPC_SHADOW_EVP_PKEY_get_raw_private_key
+#define EVP_PKEY_get_raw_public_key GRPC_SHADOW_EVP_PKEY_get_raw_public_key
+#define EVP_PKEY_id GRPC_SHADOW_EVP_PKEY_id
+#define EVP_PKEY_is_opaque GRPC_SHADOW_EVP_PKEY_is_opaque
+#define EVP_PKEY_keygen GRPC_SHADOW_EVP_PKEY_keygen
+#define EVP_PKEY_keygen_init GRPC_SHADOW_EVP_PKEY_keygen_init
+#define EVP_PKEY_missing_parameters GRPC_SHADOW_EVP_PKEY_missing_parameters
+#define EVP_PKEY_new GRPC_SHADOW_EVP_PKEY_new
+#define EVP_PKEY_new_raw_private_key GRPC_SHADOW_EVP_PKEY_new_raw_private_key
+#define EVP_PKEY_new_raw_public_key GRPC_SHADOW_EVP_PKEY_new_raw_public_key
+#define EVP_PKEY_paramgen GRPC_SHADOW_EVP_PKEY_paramgen
+#define EVP_PKEY_paramgen_init GRPC_SHADOW_EVP_PKEY_paramgen_init
+#define EVP_PKEY_print_params GRPC_SHADOW_EVP_PKEY_print_params
+#define EVP_PKEY_print_private GRPC_SHADOW_EVP_PKEY_print_private
+#define EVP_PKEY_print_public GRPC_SHADOW_EVP_PKEY_print_public
+#define EVP_PKEY_set1_DSA GRPC_SHADOW_EVP_PKEY_set1_DSA
+#define EVP_PKEY_set1_EC_KEY GRPC_SHADOW_EVP_PKEY_set1_EC_KEY
+#define EVP_PKEY_set1_RSA GRPC_SHADOW_EVP_PKEY_set1_RSA
+#define EVP_PKEY_set1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_set1_tls_encodedpoint
+#define EVP_PKEY_set_type GRPC_SHADOW_EVP_PKEY_set_type
+#define EVP_PKEY_sign GRPC_SHADOW_EVP_PKEY_sign
+#define EVP_PKEY_sign_init GRPC_SHADOW_EVP_PKEY_sign_init
+#define EVP_PKEY_size GRPC_SHADOW_EVP_PKEY_size
+#define EVP_PKEY_type GRPC_SHADOW_EVP_PKEY_type
+#define EVP_PKEY_up_ref GRPC_SHADOW_EVP_PKEY_up_ref
+#define EVP_PKEY_verify GRPC_SHADOW_EVP_PKEY_verify
+#define EVP_PKEY_verify_init GRPC_SHADOW_EVP_PKEY_verify_init
+#define EVP_PKEY_verify_recover GRPC_SHADOW_EVP_PKEY_verify_recover
+#define EVP_PKEY_verify_recover_init GRPC_SHADOW_EVP_PKEY_verify_recover_init
+#define EVP_rc2_40_cbc GRPC_SHADOW_EVP_rc2_40_cbc
+#define EVP_rc2_cbc GRPC_SHADOW_EVP_rc2_cbc
+#define EVP_rc4 GRPC_SHADOW_EVP_rc4
+#define EVP_sha1 GRPC_SHADOW_EVP_sha1
+#define EVP_sha224 GRPC_SHADOW_EVP_sha224
+#define EVP_sha256 GRPC_SHADOW_EVP_sha256
+#define EVP_sha384 GRPC_SHADOW_EVP_sha384
+#define EVP_sha512 GRPC_SHADOW_EVP_sha512
+#define EVP_SignFinal GRPC_SHADOW_EVP_SignFinal
+#define EVP_SignInit GRPC_SHADOW_EVP_SignInit
+#define EVP_SignInit_ex GRPC_SHADOW_EVP_SignInit_ex
+#define EVP_SignUpdate GRPC_SHADOW_EVP_SignUpdate
+#define EVP_tls_cbc_copy_mac GRPC_SHADOW_EVP_tls_cbc_copy_mac
+#define EVP_tls_cbc_digest_record GRPC_SHADOW_EVP_tls_cbc_digest_record
+#define EVP_tls_cbc_record_digest_supported GRPC_SHADOW_EVP_tls_cbc_record_digest_supported
+#define EVP_tls_cbc_remove_padding GRPC_SHADOW_EVP_tls_cbc_remove_padding
+#define EVP_VerifyFinal GRPC_SHADOW_EVP_VerifyFinal
+#define EVP_VerifyInit GRPC_SHADOW_EVP_VerifyInit
+#define EVP_VerifyInit_ex GRPC_SHADOW_EVP_VerifyInit_ex
+#define EVP_VerifyUpdate GRPC_SHADOW_EVP_VerifyUpdate
+#define EXTENDED_KEY_USAGE_free GRPC_SHADOW_EXTENDED_KEY_USAGE_free
+#define EXTENDED_KEY_USAGE_it GRPC_SHADOW_EXTENDED_KEY_USAGE_it
+#define EXTENDED_KEY_USAGE_new GRPC_SHADOW_EXTENDED_KEY_USAGE_new
+#define FIPS_mode GRPC_SHADOW_FIPS_mode
+#define FIPS_mode_set GRPC_SHADOW_FIPS_mode_set
+#define gcm_ghash_avx GRPC_SHADOW_gcm_ghash_avx
+#define gcm_ghash_clmul GRPC_SHADOW_gcm_ghash_clmul
+#define gcm_ghash_nohw GRPC_SHADOW_gcm_ghash_nohw
+#define gcm_ghash_ssse3 GRPC_SHADOW_gcm_ghash_ssse3
+#define gcm_gmult_avx GRPC_SHADOW_gcm_gmult_avx
+#define gcm_gmult_clmul GRPC_SHADOW_gcm_gmult_clmul
+#define gcm_gmult_nohw GRPC_SHADOW_gcm_gmult_nohw
+#define gcm_gmult_ssse3 GRPC_SHADOW_gcm_gmult_ssse3
+#define gcm_init_avx GRPC_SHADOW_gcm_init_avx
+#define gcm_init_clmul GRPC_SHADOW_gcm_init_clmul
+#define gcm_init_nohw GRPC_SHADOW_gcm_init_nohw
+#define gcm_init_ssse3 GRPC_SHADOW_gcm_init_ssse3
+#define GENERAL_NAME_cmp GRPC_SHADOW_GENERAL_NAME_cmp
+#define GENERAL_NAME_dup GRPC_SHADOW_GENERAL_NAME_dup
+#define GENERAL_NAME_free GRPC_SHADOW_GENERAL_NAME_free
+#define GENERAL_NAME_get0_otherName GRPC_SHADOW_GENERAL_NAME_get0_otherName
+#define GENERAL_NAME_get0_value GRPC_SHADOW_GENERAL_NAME_get0_value
+#define GENERAL_NAME_it GRPC_SHADOW_GENERAL_NAME_it
+#define GENERAL_NAME_new GRPC_SHADOW_GENERAL_NAME_new
+#define GENERAL_NAME_print GRPC_SHADOW_GENERAL_NAME_print
+#define GENERAL_NAME_set0_othername GRPC_SHADOW_GENERAL_NAME_set0_othername
+#define GENERAL_NAME_set0_value GRPC_SHADOW_GENERAL_NAME_set0_value
+#define GENERAL_NAMES_free GRPC_SHADOW_GENERAL_NAMES_free
+#define GENERAL_NAMES_it GRPC_SHADOW_GENERAL_NAMES_it
+#define GENERAL_NAMES_new GRPC_SHADOW_GENERAL_NAMES_new
+#define GENERAL_SUBTREE_free GRPC_SHADOW_GENERAL_SUBTREE_free
+#define GENERAL_SUBTREE_it GRPC_SHADOW_GENERAL_SUBTREE_it
+#define GENERAL_SUBTREE_new GRPC_SHADOW_GENERAL_SUBTREE_new
+#define HKDF GRPC_SHADOW_HKDF
+#define HKDF_expand GRPC_SHADOW_HKDF_expand
+#define HKDF_extract GRPC_SHADOW_HKDF_extract
+#define HMAC GRPC_SHADOW_HMAC
+#define HMAC_CTX_cleanup GRPC_SHADOW_HMAC_CTX_cleanup
+#define HMAC_CTX_copy GRPC_SHADOW_HMAC_CTX_copy
+#define HMAC_CTX_copy_ex GRPC_SHADOW_HMAC_CTX_copy_ex
+#define HMAC_CTX_free GRPC_SHADOW_HMAC_CTX_free
+#define HMAC_CTX_init GRPC_SHADOW_HMAC_CTX_init
+#define HMAC_CTX_new GRPC_SHADOW_HMAC_CTX_new
+#define HMAC_CTX_reset GRPC_SHADOW_HMAC_CTX_reset
+#define HMAC_Final GRPC_SHADOW_HMAC_Final
+#define HMAC_Init GRPC_SHADOW_HMAC_Init
+#define HMAC_Init_ex GRPC_SHADOW_HMAC_Init_ex
+#define HMAC_size GRPC_SHADOW_HMAC_size
+#define HMAC_Update GRPC_SHADOW_HMAC_Update
+#define HRSS_decap GRPC_SHADOW_HRSS_decap
+#define HRSS_encap GRPC_SHADOW_HRSS_encap
+#define HRSS_generate_key GRPC_SHADOW_HRSS_generate_key
+#define HRSS_marshal_public_key GRPC_SHADOW_HRSS_marshal_public_key
+#define HRSS_parse_public_key GRPC_SHADOW_HRSS_parse_public_key
+#define HRSS_poly3_invert GRPC_SHADOW_HRSS_poly3_invert
+#define HRSS_poly3_mul GRPC_SHADOW_HRSS_poly3_mul
+#define i2a_ACCESS_DESCRIPTION GRPC_SHADOW_i2a_ACCESS_DESCRIPTION
+#define i2a_ASN1_ENUMERATED GRPC_SHADOW_i2a_ASN1_ENUMERATED
+#define i2a_ASN1_INTEGER GRPC_SHADOW_i2a_ASN1_INTEGER
+#define i2a_ASN1_OBJECT GRPC_SHADOW_i2a_ASN1_OBJECT
+#define i2a_ASN1_STRING GRPC_SHADOW_i2a_ASN1_STRING
+#define i2c_ASN1_BIT_STRING GRPC_SHADOW_i2c_ASN1_BIT_STRING
+#define i2c_ASN1_INTEGER GRPC_SHADOW_i2c_ASN1_INTEGER
+#define i2d_ACCESS_DESCRIPTION GRPC_SHADOW_i2d_ACCESS_DESCRIPTION
+#define i2d_ASN1_BIT_STRING GRPC_SHADOW_i2d_ASN1_BIT_STRING
+#define i2d_ASN1_BMPSTRING GRPC_SHADOW_i2d_ASN1_BMPSTRING
+#define i2d_ASN1_BOOLEAN GRPC_SHADOW_i2d_ASN1_BOOLEAN
+#define i2d_ASN1_ENUMERATED GRPC_SHADOW_i2d_ASN1_ENUMERATED
+#define i2d_ASN1_GENERALIZEDTIME GRPC_SHADOW_i2d_ASN1_GENERALIZEDTIME
+#define i2d_ASN1_GENERALSTRING GRPC_SHADOW_i2d_ASN1_GENERALSTRING
+#define i2d_ASN1_IA5STRING GRPC_SHADOW_i2d_ASN1_IA5STRING
+#define i2d_ASN1_INTEGER GRPC_SHADOW_i2d_ASN1_INTEGER
+#define i2d_ASN1_NULL GRPC_SHADOW_i2d_ASN1_NULL
+#define i2d_ASN1_OBJECT GRPC_SHADOW_i2d_ASN1_OBJECT
+#define i2d_ASN1_OCTET_STRING GRPC_SHADOW_i2d_ASN1_OCTET_STRING
+#define i2d_ASN1_PRINTABLE GRPC_SHADOW_i2d_ASN1_PRINTABLE
+#define i2d_ASN1_PRINTABLESTRING GRPC_SHADOW_i2d_ASN1_PRINTABLESTRING
+#define i2d_ASN1_SEQUENCE_ANY GRPC_SHADOW_i2d_ASN1_SEQUENCE_ANY
+#define i2d_ASN1_SET_ANY GRPC_SHADOW_i2d_ASN1_SET_ANY
+#define i2d_ASN1_T61STRING GRPC_SHADOW_i2d_ASN1_T61STRING
+#define i2d_ASN1_TIME GRPC_SHADOW_i2d_ASN1_TIME
+#define i2d_ASN1_TYPE GRPC_SHADOW_i2d_ASN1_TYPE
+#define i2d_ASN1_UNIVERSALSTRING GRPC_SHADOW_i2d_ASN1_UNIVERSALSTRING
+#define i2d_ASN1_UTCTIME GRPC_SHADOW_i2d_ASN1_UTCTIME
+#define i2d_ASN1_UTF8STRING GRPC_SHADOW_i2d_ASN1_UTF8STRING
+#define i2d_ASN1_VISIBLESTRING GRPC_SHADOW_i2d_ASN1_VISIBLESTRING
+#define i2d_AUTHORITY_INFO_ACCESS GRPC_SHADOW_i2d_AUTHORITY_INFO_ACCESS
+#define i2d_AUTHORITY_KEYID GRPC_SHADOW_i2d_AUTHORITY_KEYID
+#define i2d_BASIC_CONSTRAINTS GRPC_SHADOW_i2d_BASIC_CONSTRAINTS
+#define i2d_CERTIFICATEPOLICIES GRPC_SHADOW_i2d_CERTIFICATEPOLICIES
+#define i2d_CRL_DIST_POINTS GRPC_SHADOW_i2d_CRL_DIST_POINTS
+#define i2d_DHparams GRPC_SHADOW_i2d_DHparams
+#define i2d_DHparams_bio GRPC_SHADOW_i2d_DHparams_bio
+#define i2d_DIRECTORYSTRING GRPC_SHADOW_i2d_DIRECTORYSTRING
+#define i2d_DISPLAYTEXT GRPC_SHADOW_i2d_DISPLAYTEXT
+#define i2d_DIST_POINT GRPC_SHADOW_i2d_DIST_POINT
+#define i2d_DIST_POINT_NAME GRPC_SHADOW_i2d_DIST_POINT_NAME
+#define i2d_DSAparams GRPC_SHADOW_i2d_DSAparams
+#define i2d_DSAPrivateKey GRPC_SHADOW_i2d_DSAPrivateKey
+#define i2d_DSAPrivateKey_bio GRPC_SHADOW_i2d_DSAPrivateKey_bio
+#define i2d_DSAPrivateKey_fp GRPC_SHADOW_i2d_DSAPrivateKey_fp
+#define i2d_DSA_PUBKEY GRPC_SHADOW_i2d_DSA_PUBKEY
+#define i2d_DSA_PUBKEY_bio GRPC_SHADOW_i2d_DSA_PUBKEY_bio
+#define i2d_DSA_PUBKEY_fp GRPC_SHADOW_i2d_DSA_PUBKEY_fp
+#define i2d_DSAPublicKey GRPC_SHADOW_i2d_DSAPublicKey
+#define i2d_DSA_SIG GRPC_SHADOW_i2d_DSA_SIG
+#define i2d_ECDSA_SIG GRPC_SHADOW_i2d_ECDSA_SIG
+#define i2d_ECParameters GRPC_SHADOW_i2d_ECParameters
+#define i2d_ECPrivateKey GRPC_SHADOW_i2d_ECPrivateKey
+#define i2d_ECPrivateKey_bio GRPC_SHADOW_i2d_ECPrivateKey_bio
+#define i2d_ECPrivateKey_fp GRPC_SHADOW_i2d_ECPrivateKey_fp
+#define i2d_EC_PUBKEY GRPC_SHADOW_i2d_EC_PUBKEY
+#define i2d_EC_PUBKEY_bio GRPC_SHADOW_i2d_EC_PUBKEY_bio
+#define i2d_EC_PUBKEY_fp GRPC_SHADOW_i2d_EC_PUBKEY_fp
+#define i2d_EDIPARTYNAME GRPC_SHADOW_i2d_EDIPARTYNAME
+#define i2d_EXTENDED_KEY_USAGE GRPC_SHADOW_i2d_EXTENDED_KEY_USAGE
+#define i2d_GENERAL_NAME GRPC_SHADOW_i2d_GENERAL_NAME
+#define i2d_GENERAL_NAMES GRPC_SHADOW_i2d_GENERAL_NAMES
+#define i2d_ISSUING_DIST_POINT GRPC_SHADOW_i2d_ISSUING_DIST_POINT
+#define i2d_NETSCAPE_SPKAC GRPC_SHADOW_i2d_NETSCAPE_SPKAC
+#define i2d_NETSCAPE_SPKI GRPC_SHADOW_i2d_NETSCAPE_SPKI
+#define i2d_NOTICEREF GRPC_SHADOW_i2d_NOTICEREF
+#define i2d_OTHERNAME GRPC_SHADOW_i2d_OTHERNAME
+#define i2d_PKCS12 GRPC_SHADOW_i2d_PKCS12
+#define i2d_PKCS12_bio GRPC_SHADOW_i2d_PKCS12_bio
+#define i2d_PKCS12_fp GRPC_SHADOW_i2d_PKCS12_fp
+#define i2d_PKCS7 GRPC_SHADOW_i2d_PKCS7
+#define i2d_PKCS7_bio GRPC_SHADOW_i2d_PKCS7_bio
+#define i2d_PKCS8_bio GRPC_SHADOW_i2d_PKCS8_bio
+#define i2d_PKCS8_fp GRPC_SHADOW_i2d_PKCS8_fp
+#define i2d_PKCS8PrivateKey_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_bio
+#define i2d_PKCS8PrivateKey_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_fp
+#define i2d_PKCS8PrivateKeyInfo_bio GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_bio
+#define i2d_PKCS8PrivateKeyInfo_fp GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_fp
+#define i2d_PKCS8PrivateKey_nid_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_bio
+#define i2d_PKCS8PrivateKey_nid_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_fp
+#define i2d_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO
+#define i2d_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_bio
+#define i2d_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_fp
+#define i2d_PKEY_USAGE_PERIOD GRPC_SHADOW_i2d_PKEY_USAGE_PERIOD
+#define i2d_POLICYINFO GRPC_SHADOW_i2d_POLICYINFO
+#define i2d_POLICYQUALINFO GRPC_SHADOW_i2d_POLICYQUALINFO
+#define i2d_PrivateKey GRPC_SHADOW_i2d_PrivateKey
+#define i2d_PrivateKey_bio GRPC_SHADOW_i2d_PrivateKey_bio
+#define i2d_PrivateKey_fp GRPC_SHADOW_i2d_PrivateKey_fp
+#define i2d_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_i2d_PROXY_CERT_INFO_EXTENSION
+#define i2d_PROXY_POLICY GRPC_SHADOW_i2d_PROXY_POLICY
+#define i2d_PUBKEY GRPC_SHADOW_i2d_PUBKEY
+#define i2d_PUBKEY_bio GRPC_SHADOW_i2d_PUBKEY_bio
+#define i2d_PUBKEY_fp GRPC_SHADOW_i2d_PUBKEY_fp
+#define i2d_PublicKey GRPC_SHADOW_i2d_PublicKey
+#define i2d_re_X509_CRL_tbs GRPC_SHADOW_i2d_re_X509_CRL_tbs
+#define i2d_re_X509_REQ_tbs GRPC_SHADOW_i2d_re_X509_REQ_tbs
+#define i2d_re_X509_tbs GRPC_SHADOW_i2d_re_X509_tbs
+#define i2d_RSAPrivateKey GRPC_SHADOW_i2d_RSAPrivateKey
+#define i2d_RSAPrivateKey_bio GRPC_SHADOW_i2d_RSAPrivateKey_bio
+#define i2d_RSAPrivateKey_fp GRPC_SHADOW_i2d_RSAPrivateKey_fp
+#define i2d_RSA_PSS_PARAMS GRPC_SHADOW_i2d_RSA_PSS_PARAMS
+#define i2d_RSA_PUBKEY GRPC_SHADOW_i2d_RSA_PUBKEY
+#define i2d_RSA_PUBKEY_bio GRPC_SHADOW_i2d_RSA_PUBKEY_bio
+#define i2d_RSA_PUBKEY_fp GRPC_SHADOW_i2d_RSA_PUBKEY_fp
+#define i2d_RSAPublicKey GRPC_SHADOW_i2d_RSAPublicKey
+#define i2d_RSAPublicKey_bio GRPC_SHADOW_i2d_RSAPublicKey_bio
+#define i2d_RSAPublicKey_fp GRPC_SHADOW_i2d_RSAPublicKey_fp
+#define i2d_SSL_SESSION GRPC_SHADOW_i2d_SSL_SESSION
+#define i2d_SSL_SESSION_bio GRPC_SHADOW_i2d_SSL_SESSION_bio
+#define i2d_SXNET GRPC_SHADOW_i2d_SXNET
+#define i2d_SXNETID GRPC_SHADOW_i2d_SXNETID
+#define i2d_USERNOTICE GRPC_SHADOW_i2d_USERNOTICE
+#define i2d_X509 GRPC_SHADOW_i2d_X509
+#define i2d_X509_ALGOR GRPC_SHADOW_i2d_X509_ALGOR
+#define i2d_X509_ALGORS GRPC_SHADOW_i2d_X509_ALGORS
+#define i2d_X509_ATTRIBUTE GRPC_SHADOW_i2d_X509_ATTRIBUTE
+#define i2d_X509_AUX GRPC_SHADOW_i2d_X509_AUX
+#define i2d_X509_bio GRPC_SHADOW_i2d_X509_bio
+#define i2d_X509_CERT_AUX GRPC_SHADOW_i2d_X509_CERT_AUX
+#define i2d_X509_CINF GRPC_SHADOW_i2d_X509_CINF
+#define i2d_X509_CRL GRPC_SHADOW_i2d_X509_CRL
+#define i2d_X509_CRL_bio GRPC_SHADOW_i2d_X509_CRL_bio
+#define i2d_X509_CRL_fp GRPC_SHADOW_i2d_X509_CRL_fp
+#define i2d_X509_CRL_INFO GRPC_SHADOW_i2d_X509_CRL_INFO
+#define i2d_X509_EXTENSION GRPC_SHADOW_i2d_X509_EXTENSION
+#define i2d_X509_EXTENSIONS GRPC_SHADOW_i2d_X509_EXTENSIONS
+#define i2d_X509_fp GRPC_SHADOW_i2d_X509_fp
+#define i2d_X509_NAME GRPC_SHADOW_i2d_X509_NAME
+#define i2d_X509_NAME_ENTRY GRPC_SHADOW_i2d_X509_NAME_ENTRY
+#define i2d_X509_PUBKEY GRPC_SHADOW_i2d_X509_PUBKEY
+#define i2d_X509_REQ GRPC_SHADOW_i2d_X509_REQ
+#define i2d_X509_REQ_bio GRPC_SHADOW_i2d_X509_REQ_bio
+#define i2d_X509_REQ_fp GRPC_SHADOW_i2d_X509_REQ_fp
+#define i2d_X509_REQ_INFO GRPC_SHADOW_i2d_X509_REQ_INFO
+#define i2d_X509_REVOKED GRPC_SHADOW_i2d_X509_REVOKED
+#define i2d_X509_SIG GRPC_SHADOW_i2d_X509_SIG
+#define i2d_X509_VAL GRPC_SHADOW_i2d_X509_VAL
+#define i2o_ECPublicKey GRPC_SHADOW_i2o_ECPublicKey
+#define i2s_ASN1_ENUMERATED GRPC_SHADOW_i2s_ASN1_ENUMERATED
+#define i2s_ASN1_ENUMERATED_TABLE GRPC_SHADOW_i2s_ASN1_ENUMERATED_TABLE
+#define i2s_ASN1_INTEGER GRPC_SHADOW_i2s_ASN1_INTEGER
+#define i2s_ASN1_OCTET_STRING GRPC_SHADOW_i2s_ASN1_OCTET_STRING
+#define i2t_ASN1_OBJECT GRPC_SHADOW_i2t_ASN1_OBJECT
+#define i2v_ASN1_BIT_STRING GRPC_SHADOW_i2v_ASN1_BIT_STRING
+#define i2v_GENERAL_NAME GRPC_SHADOW_i2v_GENERAL_NAME
+#define i2v_GENERAL_NAMES GRPC_SHADOW_i2v_GENERAL_NAMES
+#define ISSUING_DIST_POINT_free GRPC_SHADOW_ISSUING_DIST_POINT_free
+#define ISSUING_DIST_POINT_it GRPC_SHADOW_ISSUING_DIST_POINT_it
+#define ISSUING_DIST_POINT_new GRPC_SHADOW_ISSUING_DIST_POINT_new
+#define kBoringSSLRSASqrtTwo GRPC_SHADOW_kBoringSSLRSASqrtTwo
+#define kBoringSSLRSASqrtTwoLen GRPC_SHADOW_kBoringSSLRSASqrtTwoLen
+#define kOpenSSLReasonStringData GRPC_SHADOW_kOpenSSLReasonStringData
+#define kOpenSSLReasonValues GRPC_SHADOW_kOpenSSLReasonValues
+#define kOpenSSLReasonValuesLen GRPC_SHADOW_kOpenSSLReasonValuesLen
+#define level_add_node GRPC_SHADOW_level_add_node
+#define level_find_node GRPC_SHADOW_level_find_node
+#define lh_delete GRPC_SHADOW_lh_delete
+#define lh_doall_arg GRPC_SHADOW_lh_doall_arg
+#define lh_free GRPC_SHADOW_lh_free
+#define lh_insert GRPC_SHADOW_lh_insert
+#define lh_new GRPC_SHADOW_lh_new
+#define lh_num_items GRPC_SHADOW_lh_num_items
+#define lh_retrieve GRPC_SHADOW_lh_retrieve
+#define lh_retrieve_key GRPC_SHADOW_lh_retrieve_key
+#define lh_strhash GRPC_SHADOW_lh_strhash
+#define MD4 GRPC_SHADOW_MD4
+#define md4_block_data_order GRPC_SHADOW_md4_block_data_order
+#define MD4_Final GRPC_SHADOW_MD4_Final
+#define MD4_Init GRPC_SHADOW_MD4_Init
+#define MD4_Transform GRPC_SHADOW_MD4_Transform
+#define MD4_Update GRPC_SHADOW_MD4_Update
+#define MD5 GRPC_SHADOW_MD5
+#define md5_block_asm_data_order GRPC_SHADOW_md5_block_asm_data_order
+#define MD5_Final GRPC_SHADOW_MD5_Final
+#define MD5_Init GRPC_SHADOW_MD5_Init
+#define MD5_Transform GRPC_SHADOW_MD5_Transform
+#define MD5_Update GRPC_SHADOW_MD5_Update
+#define METHOD_ref GRPC_SHADOW_METHOD_ref
+#define METHOD_unref GRPC_SHADOW_METHOD_unref
+#define NAME_CONSTRAINTS_check GRPC_SHADOW_NAME_CONSTRAINTS_check
+#define NAME_CONSTRAINTS_free GRPC_SHADOW_NAME_CONSTRAINTS_free
+#define NAME_CONSTRAINTS_it GRPC_SHADOW_NAME_CONSTRAINTS_it
+#define NAME_CONSTRAINTS_new GRPC_SHADOW_NAME_CONSTRAINTS_new
+#define NCONF_free GRPC_SHADOW_NCONF_free
+#define NCONF_get_section GRPC_SHADOW_NCONF_get_section
+#define NCONF_get_string GRPC_SHADOW_NCONF_get_string
+#define NCONF_load GRPC_SHADOW_NCONF_load
+#define NCONF_load_bio GRPC_SHADOW_NCONF_load_bio
+#define NCONF_new GRPC_SHADOW_NCONF_new
+#define NETSCAPE_SPKAC_free GRPC_SHADOW_NETSCAPE_SPKAC_free
+#define NETSCAPE_SPKAC_it GRPC_SHADOW_NETSCAPE_SPKAC_it
+#define NETSCAPE_SPKAC_new GRPC_SHADOW_NETSCAPE_SPKAC_new
+#define NETSCAPE_SPKI_b64_decode GRPC_SHADOW_NETSCAPE_SPKI_b64_decode
+#define NETSCAPE_SPKI_b64_encode GRPC_SHADOW_NETSCAPE_SPKI_b64_encode
+#define NETSCAPE_SPKI_free GRPC_SHADOW_NETSCAPE_SPKI_free
+#define NETSCAPE_SPKI_get_pubkey GRPC_SHADOW_NETSCAPE_SPKI_get_pubkey
+#define NETSCAPE_SPKI_it GRPC_SHADOW_NETSCAPE_SPKI_it
+#define NETSCAPE_SPKI_new GRPC_SHADOW_NETSCAPE_SPKI_new
+#define NETSCAPE_SPKI_set_pubkey GRPC_SHADOW_NETSCAPE_SPKI_set_pubkey
+#define NETSCAPE_SPKI_sign GRPC_SHADOW_NETSCAPE_SPKI_sign
+#define NETSCAPE_SPKI_verify GRPC_SHADOW_NETSCAPE_SPKI_verify
+#define NOTICEREF_free GRPC_SHADOW_NOTICEREF_free
+#define NOTICEREF_it GRPC_SHADOW_NOTICEREF_it
+#define NOTICEREF_new GRPC_SHADOW_NOTICEREF_new
+#define o2i_ECPublicKey GRPC_SHADOW_o2i_ECPublicKey
+#define OBJ_cbs2nid GRPC_SHADOW_OBJ_cbs2nid
+#define OBJ_cleanup GRPC_SHADOW_OBJ_cleanup
+#define OBJ_cmp GRPC_SHADOW_OBJ_cmp
+#define OBJ_create GRPC_SHADOW_OBJ_create
+#define OBJ_dup GRPC_SHADOW_OBJ_dup
+#define OBJ_find_sigid_algs GRPC_SHADOW_OBJ_find_sigid_algs
+#define OBJ_find_sigid_by_algs GRPC_SHADOW_OBJ_find_sigid_by_algs
+#define OBJ_get0_data GRPC_SHADOW_OBJ_get0_data
+#define OBJ_length GRPC_SHADOW_OBJ_length
+#define OBJ_ln2nid GRPC_SHADOW_OBJ_ln2nid
+#define OBJ_nid2cbb GRPC_SHADOW_OBJ_nid2cbb
+#define OBJ_nid2ln GRPC_SHADOW_OBJ_nid2ln
+#define OBJ_nid2obj GRPC_SHADOW_OBJ_nid2obj
+#define OBJ_nid2sn GRPC_SHADOW_OBJ_nid2sn
+#define OBJ_obj2nid GRPC_SHADOW_OBJ_obj2nid
+#define OBJ_obj2txt GRPC_SHADOW_OBJ_obj2txt
+#define OBJ_sn2nid GRPC_SHADOW_OBJ_sn2nid
+#define OBJ_txt2nid GRPC_SHADOW_OBJ_txt2nid
+#define OBJ_txt2obj GRPC_SHADOW_OBJ_txt2obj
+#define OpenSSL_add_all_algorithms GRPC_SHADOW_OpenSSL_add_all_algorithms
+#define OPENSSL_add_all_algorithms_conf GRPC_SHADOW_OPENSSL_add_all_algorithms_conf
+#define OpenSSL_add_all_ciphers GRPC_SHADOW_OpenSSL_add_all_ciphers
+#define OpenSSL_add_all_digests GRPC_SHADOW_OpenSSL_add_all_digests
+#define OPENSSL_built_in_curves GRPC_SHADOW_OPENSSL_built_in_curves
+#define OPENSSL_cleanse GRPC_SHADOW_OPENSSL_cleanse
+#define OPENSSL_cleanup GRPC_SHADOW_OPENSSL_cleanup
+#define OPENSSL_clear_free GRPC_SHADOW_OPENSSL_clear_free
+#define OPENSSL_config GRPC_SHADOW_OPENSSL_config
+#define OPENSSL_cpuid_setup GRPC_SHADOW_OPENSSL_cpuid_setup
+#define OPENSSL_free GRPC_SHADOW_OPENSSL_free
+#define OPENSSL_gmtime GRPC_SHADOW_OPENSSL_gmtime
+#define OPENSSL_gmtime_adj GRPC_SHADOW_OPENSSL_gmtime_adj
+#define OPENSSL_gmtime_diff GRPC_SHADOW_OPENSSL_gmtime_diff
+#define OPENSSL_hash32 GRPC_SHADOW_OPENSSL_hash32
+#define OPENSSL_ia32cap_P GRPC_SHADOW_OPENSSL_ia32cap_P
+#define OPENSSL_init_crypto GRPC_SHADOW_OPENSSL_init_crypto
+#define OPENSSL_init_ssl GRPC_SHADOW_OPENSSL_init_ssl
+#define OPENSSL_load_builtin_modules GRPC_SHADOW_OPENSSL_load_builtin_modules
+#define OPENSSL_malloc GRPC_SHADOW_OPENSSL_malloc
+#define OPENSSL_malloc_init GRPC_SHADOW_OPENSSL_malloc_init
+#define OPENSSL_memdup GRPC_SHADOW_OPENSSL_memdup
+#define OPENSSL_no_config GRPC_SHADOW_OPENSSL_no_config
+#define OPENSSL_realloc GRPC_SHADOW_OPENSSL_realloc
+#define OPENSSL_strcasecmp GRPC_SHADOW_OPENSSL_strcasecmp
+#define OPENSSL_strdup GRPC_SHADOW_OPENSSL_strdup
+#define OPENSSL_strlcat GRPC_SHADOW_OPENSSL_strlcat
+#define OPENSSL_strlcpy GRPC_SHADOW_OPENSSL_strlcpy
+#define OPENSSL_strncasecmp GRPC_SHADOW_OPENSSL_strncasecmp
+#define OPENSSL_strndup GRPC_SHADOW_OPENSSL_strndup
+#define OPENSSL_strnlen GRPC_SHADOW_OPENSSL_strnlen
+#define OPENSSL_tolower GRPC_SHADOW_OPENSSL_tolower
+#define OpenSSL_version GRPC_SHADOW_OpenSSL_version
+#define OpenSSL_version_num GRPC_SHADOW_OpenSSL_version_num
+#define OTHERNAME_cmp GRPC_SHADOW_OTHERNAME_cmp
+#define OTHERNAME_free GRPC_SHADOW_OTHERNAME_free
+#define OTHERNAME_it GRPC_SHADOW_OTHERNAME_it
+#define OTHERNAME_new GRPC_SHADOW_OTHERNAME_new
+#define PEM_ASN1_read GRPC_SHADOW_PEM_ASN1_read
+#define PEM_ASN1_read_bio GRPC_SHADOW_PEM_ASN1_read_bio
+#define PEM_ASN1_write GRPC_SHADOW_PEM_ASN1_write
+#define PEM_ASN1_write_bio GRPC_SHADOW_PEM_ASN1_write_bio
+#define PEM_bytes_read_bio GRPC_SHADOW_PEM_bytes_read_bio
+#define PEM_def_callback GRPC_SHADOW_PEM_def_callback
+#define PEM_dek_info GRPC_SHADOW_PEM_dek_info
+#define PEM_do_header GRPC_SHADOW_PEM_do_header
+#define PEM_get_EVP_CIPHER_INFO GRPC_SHADOW_PEM_get_EVP_CIPHER_INFO
+#define PEM_proc_type GRPC_SHADOW_PEM_proc_type
+#define PEM_read GRPC_SHADOW_PEM_read
+#define PEM_read_bio GRPC_SHADOW_PEM_read_bio
+#define PEM_read_bio_DHparams GRPC_SHADOW_PEM_read_bio_DHparams
+#define PEM_read_bio_DSAparams GRPC_SHADOW_PEM_read_bio_DSAparams
+#define PEM_read_bio_DSAPrivateKey GRPC_SHADOW_PEM_read_bio_DSAPrivateKey
+#define PEM_read_bio_DSA_PUBKEY GRPC_SHADOW_PEM_read_bio_DSA_PUBKEY
+#define PEM_read_bio_ECPrivateKey GRPC_SHADOW_PEM_read_bio_ECPrivateKey
+#define PEM_read_bio_EC_PUBKEY GRPC_SHADOW_PEM_read_bio_EC_PUBKEY
+#define PEM_read_bio_PKCS7 GRPC_SHADOW_PEM_read_bio_PKCS7
+#define PEM_read_bio_PKCS8 GRPC_SHADOW_PEM_read_bio_PKCS8
+#define PEM_read_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_read_bio_PrivateKey GRPC_SHADOW_PEM_read_bio_PrivateKey
+#define PEM_read_bio_PUBKEY GRPC_SHADOW_PEM_read_bio_PUBKEY
+#define PEM_read_bio_RSAPrivateKey GRPC_SHADOW_PEM_read_bio_RSAPrivateKey
+#define PEM_read_bio_RSA_PUBKEY GRPC_SHADOW_PEM_read_bio_RSA_PUBKEY
+#define PEM_read_bio_RSAPublicKey GRPC_SHADOW_PEM_read_bio_RSAPublicKey
+#define PEM_read_bio_SSL_SESSION GRPC_SHADOW_PEM_read_bio_SSL_SESSION
+#define PEM_read_bio_X509 GRPC_SHADOW_PEM_read_bio_X509
+#define PEM_read_bio_X509_AUX GRPC_SHADOW_PEM_read_bio_X509_AUX
+#define PEM_read_bio_X509_CRL GRPC_SHADOW_PEM_read_bio_X509_CRL
+#define PEM_read_bio_X509_REQ GRPC_SHADOW_PEM_read_bio_X509_REQ
+#define PEM_read_DHparams GRPC_SHADOW_PEM_read_DHparams
+#define PEM_read_DSAparams GRPC_SHADOW_PEM_read_DSAparams
+#define PEM_read_DSAPrivateKey GRPC_SHADOW_PEM_read_DSAPrivateKey
+#define PEM_read_DSA_PUBKEY GRPC_SHADOW_PEM_read_DSA_PUBKEY
+#define PEM_read_ECPrivateKey GRPC_SHADOW_PEM_read_ECPrivateKey
+#define PEM_read_EC_PUBKEY GRPC_SHADOW_PEM_read_EC_PUBKEY
+#define PEM_read_PKCS7 GRPC_SHADOW_PEM_read_PKCS7
+#define PEM_read_PKCS8 GRPC_SHADOW_PEM_read_PKCS8
+#define PEM_read_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_PKCS8_PRIV_KEY_INFO
+#define PEM_read_PrivateKey GRPC_SHADOW_PEM_read_PrivateKey
+#define PEM_read_PUBKEY GRPC_SHADOW_PEM_read_PUBKEY
+#define PEM_read_RSAPrivateKey GRPC_SHADOW_PEM_read_RSAPrivateKey
+#define PEM_read_RSA_PUBKEY GRPC_SHADOW_PEM_read_RSA_PUBKEY
+#define PEM_read_RSAPublicKey GRPC_SHADOW_PEM_read_RSAPublicKey
+#define PEM_read_SSL_SESSION GRPC_SHADOW_PEM_read_SSL_SESSION
+#define PEM_read_X509 GRPC_SHADOW_PEM_read_X509
+#define PEM_read_X509_AUX GRPC_SHADOW_PEM_read_X509_AUX
+#define PEM_read_X509_CRL GRPC_SHADOW_PEM_read_X509_CRL
+#define PEM_read_X509_REQ GRPC_SHADOW_PEM_read_X509_REQ
+#define PEM_write GRPC_SHADOW_PEM_write
+#define PEM_write_bio GRPC_SHADOW_PEM_write_bio
+#define PEM_write_bio_DHparams GRPC_SHADOW_PEM_write_bio_DHparams
+#define PEM_write_bio_DSAparams GRPC_SHADOW_PEM_write_bio_DSAparams
+#define PEM_write_bio_DSAPrivateKey GRPC_SHADOW_PEM_write_bio_DSAPrivateKey
+#define PEM_write_bio_DSA_PUBKEY GRPC_SHADOW_PEM_write_bio_DSA_PUBKEY
+#define PEM_write_bio_ECPrivateKey GRPC_SHADOW_PEM_write_bio_ECPrivateKey
+#define PEM_write_bio_EC_PUBKEY GRPC_SHADOW_PEM_write_bio_EC_PUBKEY
+#define PEM_write_bio_PKCS7 GRPC_SHADOW_PEM_write_bio_PKCS7
+#define PEM_write_bio_PKCS8 GRPC_SHADOW_PEM_write_bio_PKCS8
+#define PEM_write_bio_PKCS8PrivateKey GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey
+#define PEM_write_bio_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey_nid
+#define PEM_write_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_write_bio_PrivateKey GRPC_SHADOW_PEM_write_bio_PrivateKey
+#define PEM_write_bio_PUBKEY GRPC_SHADOW_PEM_write_bio_PUBKEY
+#define PEM_write_bio_RSAPrivateKey GRPC_SHADOW_PEM_write_bio_RSAPrivateKey
+#define PEM_write_bio_RSA_PUBKEY GRPC_SHADOW_PEM_write_bio_RSA_PUBKEY
+#define PEM_write_bio_RSAPublicKey GRPC_SHADOW_PEM_write_bio_RSAPublicKey
+#define PEM_write_bio_SSL_SESSION GRPC_SHADOW_PEM_write_bio_SSL_SESSION
+#define PEM_write_bio_X509 GRPC_SHADOW_PEM_write_bio_X509
+#define PEM_write_bio_X509_AUX GRPC_SHADOW_PEM_write_bio_X509_AUX
+#define PEM_write_bio_X509_CRL GRPC_SHADOW_PEM_write_bio_X509_CRL
+#define PEM_write_bio_X509_REQ GRPC_SHADOW_PEM_write_bio_X509_REQ
+#define PEM_write_bio_X509_REQ_NEW GRPC_SHADOW_PEM_write_bio_X509_REQ_NEW
+#define PEM_write_DHparams GRPC_SHADOW_PEM_write_DHparams
+#define PEM_write_DSAparams GRPC_SHADOW_PEM_write_DSAparams
+#define PEM_write_DSAPrivateKey GRPC_SHADOW_PEM_write_DSAPrivateKey
+#define PEM_write_DSA_PUBKEY GRPC_SHADOW_PEM_write_DSA_PUBKEY
+#define PEM_write_ECPrivateKey GRPC_SHADOW_PEM_write_ECPrivateKey
+#define PEM_write_EC_PUBKEY GRPC_SHADOW_PEM_write_EC_PUBKEY
+#define PEM_write_PKCS7 GRPC_SHADOW_PEM_write_PKCS7
+#define PEM_write_PKCS8 GRPC_SHADOW_PEM_write_PKCS8
+#define PEM_write_PKCS8PrivateKey GRPC_SHADOW_PEM_write_PKCS8PrivateKey
+#define PEM_write_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_PKCS8PrivateKey_nid
+#define PEM_write_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_PKCS8_PRIV_KEY_INFO
+#define PEM_write_PrivateKey GRPC_SHADOW_PEM_write_PrivateKey
+#define PEM_write_PUBKEY GRPC_SHADOW_PEM_write_PUBKEY
+#define PEM_write_RSAPrivateKey GRPC_SHADOW_PEM_write_RSAPrivateKey
+#define PEM_write_RSA_PUBKEY GRPC_SHADOW_PEM_write_RSA_PUBKEY
+#define PEM_write_RSAPublicKey GRPC_SHADOW_PEM_write_RSAPublicKey
+#define PEM_write_SSL_SESSION GRPC_SHADOW_PEM_write_SSL_SESSION
+#define PEM_write_X509 GRPC_SHADOW_PEM_write_X509
+#define PEM_write_X509_AUX GRPC_SHADOW_PEM_write_X509_AUX
+#define PEM_write_X509_CRL GRPC_SHADOW_PEM_write_X509_CRL
+#define PEM_write_X509_REQ GRPC_SHADOW_PEM_write_X509_REQ
+#define PEM_write_X509_REQ_NEW GRPC_SHADOW_PEM_write_X509_REQ_NEW
+#define PEM_X509_INFO_read GRPC_SHADOW_PEM_X509_INFO_read
+#define PEM_X509_INFO_read_bio GRPC_SHADOW_PEM_X509_INFO_read_bio
+#define PEM_X509_INFO_write_bio GRPC_SHADOW_PEM_X509_INFO_write_bio
+#define PKCS12_create GRPC_SHADOW_PKCS12_create
+#define PKCS12_free GRPC_SHADOW_PKCS12_free
+#define PKCS12_get_key_and_certs GRPC_SHADOW_PKCS12_get_key_and_certs
+#define pkcs12_iterations_acceptable GRPC_SHADOW_pkcs12_iterations_acceptable
+#define pkcs12_key_gen GRPC_SHADOW_pkcs12_key_gen
+#define PKCS12_parse GRPC_SHADOW_PKCS12_parse
+#define PKCS12_PBE_add GRPC_SHADOW_PKCS12_PBE_add
+#define pkcs12_pbe_encrypt_init GRPC_SHADOW_pkcs12_pbe_encrypt_init
+#define PKCS12_verify_mac GRPC_SHADOW_PKCS12_verify_mac
+#define PKCS5_pbe2_decrypt_init GRPC_SHADOW_PKCS5_pbe2_decrypt_init
+#define PKCS5_pbe2_encrypt_init GRPC_SHADOW_PKCS5_pbe2_encrypt_init
+#define PKCS5_PBKDF2_HMAC GRPC_SHADOW_PKCS5_PBKDF2_HMAC
+#define PKCS5_PBKDF2_HMAC_SHA1 GRPC_SHADOW_PKCS5_PBKDF2_HMAC_SHA1
+#define pkcs7_bundle GRPC_SHADOW_pkcs7_bundle
+#define PKCS7_bundle_certificates GRPC_SHADOW_PKCS7_bundle_certificates
+#define PKCS7_bundle_CRLs GRPC_SHADOW_PKCS7_bundle_CRLs
+#define PKCS7_free GRPC_SHADOW_PKCS7_free
+#define PKCS7_get_certificates GRPC_SHADOW_PKCS7_get_certificates
+#define PKCS7_get_CRLs GRPC_SHADOW_PKCS7_get_CRLs
+#define PKCS7_get_PEM_certificates GRPC_SHADOW_PKCS7_get_PEM_certificates
+#define PKCS7_get_PEM_CRLs GRPC_SHADOW_PKCS7_get_PEM_CRLs
+#define PKCS7_get_raw_certificates GRPC_SHADOW_PKCS7_get_raw_certificates
+#define pkcs7_parse_header GRPC_SHADOW_pkcs7_parse_header
+#define PKCS7_sign GRPC_SHADOW_PKCS7_sign
+#define PKCS7_type_is_data GRPC_SHADOW_PKCS7_type_is_data
+#define PKCS7_type_is_digest GRPC_SHADOW_PKCS7_type_is_digest
+#define PKCS7_type_is_encrypted GRPC_SHADOW_PKCS7_type_is_encrypted
+#define PKCS7_type_is_enveloped GRPC_SHADOW_PKCS7_type_is_enveloped
+#define PKCS7_type_is_signed GRPC_SHADOW_PKCS7_type_is_signed
+#define PKCS7_type_is_signedAndEnveloped GRPC_SHADOW_PKCS7_type_is_signedAndEnveloped
+#define PKCS8_decrypt GRPC_SHADOW_PKCS8_decrypt
+#define PKCS8_encrypt GRPC_SHADOW_PKCS8_encrypt
+#define PKCS8_marshal_encrypted_private_key GRPC_SHADOW_PKCS8_marshal_encrypted_private_key
+#define PKCS8_parse_encrypted_private_key GRPC_SHADOW_PKCS8_parse_encrypted_private_key
+#define pkcs8_pbe_decrypt GRPC_SHADOW_pkcs8_pbe_decrypt
+#define PKCS8_pkey_get0 GRPC_SHADOW_PKCS8_pkey_get0
+#define PKCS8_pkey_set0 GRPC_SHADOW_PKCS8_pkey_set0
+#define PKCS8_PRIV_KEY_INFO_free GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_free
+#define PKCS8_PRIV_KEY_INFO_it GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_it
+#define PKCS8_PRIV_KEY_INFO_new GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_new
+#define PKEY_USAGE_PERIOD_free GRPC_SHADOW_PKEY_USAGE_PERIOD_free
+#define PKEY_USAGE_PERIOD_it GRPC_SHADOW_PKEY_USAGE_PERIOD_it
+#define PKEY_USAGE_PERIOD_new GRPC_SHADOW_PKEY_USAGE_PERIOD_new
+#define policy_cache_find_data GRPC_SHADOW_policy_cache_find_data
+#define policy_cache_free GRPC_SHADOW_policy_cache_free
+#define policy_cache_set GRPC_SHADOW_policy_cache_set
+#define policy_cache_set_mapping GRPC_SHADOW_policy_cache_set_mapping
+#define POLICY_CONSTRAINTS_free GRPC_SHADOW_POLICY_CONSTRAINTS_free
+#define POLICY_CONSTRAINTS_it GRPC_SHADOW_POLICY_CONSTRAINTS_it
+#define POLICY_CONSTRAINTS_new GRPC_SHADOW_POLICY_CONSTRAINTS_new
+#define policy_data_free GRPC_SHADOW_policy_data_free
+#define policy_data_new GRPC_SHADOW_policy_data_new
+#define POLICYINFO_free GRPC_SHADOW_POLICYINFO_free
+#define POLICYINFO_it GRPC_SHADOW_POLICYINFO_it
+#define POLICYINFO_new GRPC_SHADOW_POLICYINFO_new
+#define POLICY_MAPPING_free GRPC_SHADOW_POLICY_MAPPING_free
+#define POLICY_MAPPING_it GRPC_SHADOW_POLICY_MAPPING_it
+#define POLICY_MAPPING_new GRPC_SHADOW_POLICY_MAPPING_new
+#define POLICY_MAPPINGS_it GRPC_SHADOW_POLICY_MAPPINGS_it
+#define policy_node_cmp_new GRPC_SHADOW_policy_node_cmp_new
+#define policy_node_free GRPC_SHADOW_policy_node_free
+#define policy_node_match GRPC_SHADOW_policy_node_match
+#define POLICYQUALINFO_free GRPC_SHADOW_POLICYQUALINFO_free
+#define POLICYQUALINFO_it GRPC_SHADOW_POLICYQUALINFO_it
+#define POLICYQUALINFO_new GRPC_SHADOW_POLICYQUALINFO_new
+#define poly_Rq_mul GRPC_SHADOW_poly_Rq_mul
+#define PROXY_CERT_INFO_EXTENSION_free GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_free
+#define PROXY_CERT_INFO_EXTENSION_it GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_it
+#define PROXY_CERT_INFO_EXTENSION_new GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_new
+#define PROXY_POLICY_free GRPC_SHADOW_PROXY_POLICY_free
+#define PROXY_POLICY_it GRPC_SHADOW_PROXY_POLICY_it
+#define PROXY_POLICY_new GRPC_SHADOW_PROXY_POLICY_new
+#define RAND_add GRPC_SHADOW_RAND_add
+#define RAND_bytes GRPC_SHADOW_RAND_bytes
+#define RAND_bytes_with_additional_data GRPC_SHADOW_RAND_bytes_with_additional_data
+#define RAND_cleanup GRPC_SHADOW_RAND_cleanup
+#define RAND_egd GRPC_SHADOW_RAND_egd
+#define RAND_enable_fork_unsafe_buffering GRPC_SHADOW_RAND_enable_fork_unsafe_buffering
+#define RAND_file_name GRPC_SHADOW_RAND_file_name
+#define rand_fork_unsafe_buffering_enabled GRPC_SHADOW_rand_fork_unsafe_buffering_enabled
+#define RAND_get_rand_method GRPC_SHADOW_RAND_get_rand_method
+#define RAND_load_file GRPC_SHADOW_RAND_load_file
+#define RAND_poll GRPC_SHADOW_RAND_poll
+#define RAND_pseudo_bytes GRPC_SHADOW_RAND_pseudo_bytes
+#define RAND_seed GRPC_SHADOW_RAND_seed
+#define RAND_set_rand_method GRPC_SHADOW_RAND_set_rand_method
+#define RAND_set_urandom_fd GRPC_SHADOW_RAND_set_urandom_fd
+#define RAND_SSLeay GRPC_SHADOW_RAND_SSLeay
+#define RAND_status GRPC_SHADOW_RAND_status
+#define RC4 GRPC_SHADOW_RC4
+#define RC4_set_key GRPC_SHADOW_RC4_set_key
+#define RSA_add_pkcs1_prefix GRPC_SHADOW_RSA_add_pkcs1_prefix
+#define rsa_asn1_meth GRPC_SHADOW_rsa_asn1_meth
+#define RSA_bits GRPC_SHADOW_RSA_bits
+#define RSA_blinding_on GRPC_SHADOW_RSA_blinding_on
+#define RSA_check_fips GRPC_SHADOW_RSA_check_fips
+#define RSA_check_key GRPC_SHADOW_RSA_check_key
+#define RSA_decrypt GRPC_SHADOW_RSA_decrypt
+#define rsa_default_decrypt GRPC_SHADOW_rsa_default_decrypt
+#define RSA_default_method GRPC_SHADOW_RSA_default_method
+#define rsa_default_private_transform GRPC_SHADOW_rsa_default_private_transform
+#define rsa_default_sign_raw GRPC_SHADOW_rsa_default_sign_raw
+#define rsa_default_size GRPC_SHADOW_rsa_default_size
+#define RSA_encrypt GRPC_SHADOW_RSA_encrypt
+#define RSA_flags GRPC_SHADOW_RSA_flags
+#define RSA_free GRPC_SHADOW_RSA_free
+#define RSA_generate_key_ex GRPC_SHADOW_RSA_generate_key_ex
+#define RSA_generate_key_fips GRPC_SHADOW_RSA_generate_key_fips
+#define RSA_get0_crt_params GRPC_SHADOW_RSA_get0_crt_params
+#define RSA_get0_factors GRPC_SHADOW_RSA_get0_factors
+#define RSA_get0_key GRPC_SHADOW_RSA_get0_key
+#define RSA_get_ex_data GRPC_SHADOW_RSA_get_ex_data
+#define RSA_get_ex_new_index GRPC_SHADOW_RSA_get_ex_new_index
+#define RSA_is_opaque GRPC_SHADOW_RSA_is_opaque
+#define RSA_marshal_private_key GRPC_SHADOW_RSA_marshal_private_key
+#define RSA_marshal_public_key GRPC_SHADOW_RSA_marshal_public_key
+#define RSA_new GRPC_SHADOW_RSA_new
+#define RSA_new_method GRPC_SHADOW_RSA_new_method
+#define RSA_padding_add_none GRPC_SHADOW_RSA_padding_add_none
+#define RSA_padding_add_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_OAEP_mgf1
+#define RSA_padding_add_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_PSS_mgf1
+#define RSA_padding_add_PKCS1_type_1 GRPC_SHADOW_RSA_padding_add_PKCS1_type_1
+#define RSA_padding_add_PKCS1_type_2 GRPC_SHADOW_RSA_padding_add_PKCS1_type_2
+#define RSA_padding_check_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_check_PKCS1_OAEP_mgf1
+#define RSA_padding_check_PKCS1_type_1 GRPC_SHADOW_RSA_padding_check_PKCS1_type_1
+#define RSA_padding_check_PKCS1_type_2 GRPC_SHADOW_RSA_padding_check_PKCS1_type_2
+#define RSA_parse_private_key GRPC_SHADOW_RSA_parse_private_key
+#define RSA_parse_public_key GRPC_SHADOW_RSA_parse_public_key
+#define rsa_pkey_meth GRPC_SHADOW_rsa_pkey_meth
+#define RSA_print GRPC_SHADOW_RSA_print
+#define RSA_private_decrypt GRPC_SHADOW_RSA_private_decrypt
+#define RSA_private_encrypt GRPC_SHADOW_RSA_private_encrypt
+#define RSAPrivateKey_dup GRPC_SHADOW_RSAPrivateKey_dup
+#define RSA_private_key_from_bytes GRPC_SHADOW_RSA_private_key_from_bytes
+#define RSA_private_key_to_bytes GRPC_SHADOW_RSA_private_key_to_bytes
+#define RSA_private_transform GRPC_SHADOW_RSA_private_transform
+#define RSA_PSS_PARAMS_free GRPC_SHADOW_RSA_PSS_PARAMS_free
+#define RSA_PSS_PARAMS_it GRPC_SHADOW_RSA_PSS_PARAMS_it
+#define RSA_PSS_PARAMS_new GRPC_SHADOW_RSA_PSS_PARAMS_new
+#define RSA_public_decrypt GRPC_SHADOW_RSA_public_decrypt
+#define RSA_public_encrypt GRPC_SHADOW_RSA_public_encrypt
+#define RSAPublicKey_dup GRPC_SHADOW_RSAPublicKey_dup
+#define RSA_public_key_from_bytes GRPC_SHADOW_RSA_public_key_from_bytes
+#define RSA_public_key_to_bytes GRPC_SHADOW_RSA_public_key_to_bytes
+#define RSA_set0_crt_params GRPC_SHADOW_RSA_set0_crt_params
+#define RSA_set0_factors GRPC_SHADOW_RSA_set0_factors
+#define RSA_set0_key GRPC_SHADOW_RSA_set0_key
+#define RSA_set_ex_data GRPC_SHADOW_RSA_set_ex_data
+#define RSA_sign GRPC_SHADOW_RSA_sign
+#define RSA_sign_pss_mgf1 GRPC_SHADOW_RSA_sign_pss_mgf1
+#define RSA_sign_raw GRPC_SHADOW_RSA_sign_raw
+#define RSA_size GRPC_SHADOW_RSA_size
+#define RSA_up_ref GRPC_SHADOW_RSA_up_ref
+#define RSA_verify GRPC_SHADOW_RSA_verify
+#define RSA_verify_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_verify_PKCS1_PSS_mgf1
+#define RSA_verify_pss_mgf1 GRPC_SHADOW_RSA_verify_pss_mgf1
+#define RSA_verify_raw GRPC_SHADOW_RSA_verify_raw
+#define rsaz_1024_gather5_avx2 GRPC_SHADOW_rsaz_1024_gather5_avx2
+#define RSAZ_1024_mod_exp_avx2 GRPC_SHADOW_RSAZ_1024_mod_exp_avx2
+#define rsaz_1024_mul_avx2 GRPC_SHADOW_rsaz_1024_mul_avx2
+#define rsaz_1024_norm2red_avx2 GRPC_SHADOW_rsaz_1024_norm2red_avx2
+#define rsaz_1024_red2norm_avx2 GRPC_SHADOW_rsaz_1024_red2norm_avx2
+#define rsaz_1024_scatter5_avx2 GRPC_SHADOW_rsaz_1024_scatter5_avx2
+#define rsaz_1024_sqr_avx2 GRPC_SHADOW_rsaz_1024_sqr_avx2
+#define s2i_ASN1_INTEGER GRPC_SHADOW_s2i_ASN1_INTEGER
+#define s2i_ASN1_OCTET_STRING GRPC_SHADOW_s2i_ASN1_OCTET_STRING
+#define sdallocx GRPC_SHADOW_sdallocx
+#define SHA1 GRPC_SHADOW_SHA1
+#define sha1_block_data_order GRPC_SHADOW_sha1_block_data_order
+#define SHA1_Final GRPC_SHADOW_SHA1_Final
+#define SHA1_Init GRPC_SHADOW_SHA1_Init
+#define SHA1_Transform GRPC_SHADOW_SHA1_Transform
+#define SHA1_Update GRPC_SHADOW_SHA1_Update
+#define SHA224 GRPC_SHADOW_SHA224
+#define SHA224_Final GRPC_SHADOW_SHA224_Final
+#define SHA224_Init GRPC_SHADOW_SHA224_Init
+#define SHA224_Update GRPC_SHADOW_SHA224_Update
+#define SHA256 GRPC_SHADOW_SHA256
+#define sha256_block_data_order GRPC_SHADOW_sha256_block_data_order
+#define SHA256_Final GRPC_SHADOW_SHA256_Final
+#define SHA256_Init GRPC_SHADOW_SHA256_Init
+#define SHA256_Transform GRPC_SHADOW_SHA256_Transform
+#define SHA256_TransformBlocks GRPC_SHADOW_SHA256_TransformBlocks
+#define SHA256_Update GRPC_SHADOW_SHA256_Update
+#define SHA384 GRPC_SHADOW_SHA384
+#define SHA384_Final GRPC_SHADOW_SHA384_Final
+#define SHA384_Init GRPC_SHADOW_SHA384_Init
+#define SHA384_Update GRPC_SHADOW_SHA384_Update
+#define SHA512 GRPC_SHADOW_SHA512
+#define sha512_block_data_order GRPC_SHADOW_sha512_block_data_order
+#define SHA512_Final GRPC_SHADOW_SHA512_Final
+#define SHA512_Init GRPC_SHADOW_SHA512_Init
+#define SHA512_Transform GRPC_SHADOW_SHA512_Transform
+#define SHA512_Update GRPC_SHADOW_SHA512_Update
+#define SIPHASH_24 GRPC_SHADOW_SIPHASH_24
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_push GRPC_SHADOW_sk_CRYPTO_BUFFER_push
+#define sk_CRYPTO_BUFFER_set GRPC_SHADOW_sk_CRYPTO_BUFFER_set
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_deep_copy GRPC_SHADOW_sk_deep_copy
+#define sk_delete GRPC_SHADOW_sk_delete
+#define sk_delete_ptr GRPC_SHADOW_sk_delete_ptr
+#define sk_dup GRPC_SHADOW_sk_dup
+#define sk_find GRPC_SHADOW_sk_find
+#define sk_free GRPC_SHADOW_sk_free
+#define sk_insert GRPC_SHADOW_sk_insert
+#define sk_is_sorted GRPC_SHADOW_sk_is_sorted
+#define sk_new GRPC_SHADOW_sk_new
+#define sk_new_null GRPC_SHADOW_sk_new_null
+#define sk_num GRPC_SHADOW_sk_num
+#define sk_pop GRPC_SHADOW_sk_pop
+#define sk_pop_free GRPC_SHADOW_sk_pop_free
+#define sk_pop_free_ex GRPC_SHADOW_sk_pop_free_ex
+#define sk_push GRPC_SHADOW_sk_push
+#define sk_set GRPC_SHADOW_sk_set
+#define sk_set_cmp_func GRPC_SHADOW_sk_set_cmp_func
+#define sk_shift GRPC_SHADOW_sk_shift
+#define sk_sort GRPC_SHADOW_sk_sort
+#define sk_SRTP_PROTECTION_PROFILE_new_null GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_new_null
+#define sk_SRTP_PROTECTION_PROFILE_num GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_num
+#define sk_SRTP_PROTECTION_PROFILE_push GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_push
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_delete GRPC_SHADOW_sk_SSL_CIPHER_delete
+#define sk_SSL_CIPHER_dup GRPC_SHADOW_sk_SSL_CIPHER_dup
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_value GRPC_SHADOW_sk_value
+#define sk_X509_call_free_func GRPC_SHADOW_sk_X509_call_free_func
+#define sk_X509_NAME_call_cmp_func GRPC_SHADOW_sk_X509_NAME_call_cmp_func
+#define sk_X509_NAME_call_copy_func GRPC_SHADOW_sk_X509_NAME_call_copy_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_deep_copy GRPC_SHADOW_sk_X509_NAME_deep_copy
+#define sk_X509_NAME_find GRPC_SHADOW_sk_X509_NAME_find
+#define sk_X509_NAME_free GRPC_SHADOW_sk_X509_NAME_free
+#define sk_X509_NAME_new GRPC_SHADOW_sk_X509_NAME_new
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_push GRPC_SHADOW_sk_X509_NAME_push
+#define sk_X509_NAME_set_cmp_func GRPC_SHADOW_sk_X509_NAME_set_cmp_func
+#define sk_X509_NAME_sort GRPC_SHADOW_sk_X509_NAME_sort
+#define sk_X509_new_null GRPC_SHADOW_sk_X509_new_null
+#define sk_X509_num GRPC_SHADOW_sk_X509_num
+#define sk_X509_pop_free GRPC_SHADOW_sk_X509_pop_free
+#define sk_X509_shift GRPC_SHADOW_sk_X509_shift
+#define sk_X509_value GRPC_SHADOW_sk_X509_value
+#define sk_zero GRPC_SHADOW_sk_zero
+#define SPAKE2_CTX_free GRPC_SHADOW_SPAKE2_CTX_free
+#define SPAKE2_CTX_new GRPC_SHADOW_SPAKE2_CTX_new
+#define SPAKE2_generate_msg GRPC_SHADOW_SPAKE2_generate_msg
+#define SPAKE2_process_msg GRPC_SHADOW_SPAKE2_process_msg
+#define SSL_accept GRPC_SHADOW_SSL_accept
+#define SSL_add0_chain_cert GRPC_SHADOW_SSL_add0_chain_cert
+#define SSL_add1_chain_cert GRPC_SHADOW_SSL_add1_chain_cert
+#define SSL_add_client_CA GRPC_SHADOW_SSL_add_client_CA
+#define SSL_add_file_cert_subjects_to_stack GRPC_SHADOW_SSL_add_file_cert_subjects_to_stack
+#define SSL_alert_desc_string GRPC_SHADOW_SSL_alert_desc_string
+#define SSL_alert_desc_string_long GRPC_SHADOW_SSL_alert_desc_string_long
+#define SSL_alert_from_verify_result GRPC_SHADOW_SSL_alert_from_verify_result
+#define SSL_alert_type_string GRPC_SHADOW_SSL_alert_type_string
+#define SSL_alert_type_string_long GRPC_SHADOW_SSL_alert_type_string_long
+#define SSL_cache_hit GRPC_SHADOW_SSL_cache_hit
+#define SSL_certs_clear GRPC_SHADOW_SSL_certs_clear
+#define SSL_check_private_key GRPC_SHADOW_SSL_check_private_key
+#define SSL_CIPHER_description GRPC_SHADOW_SSL_CIPHER_description
+#define SSL_CIPHER_get_auth_nid GRPC_SHADOW_SSL_CIPHER_get_auth_nid
+#define SSL_CIPHER_get_bits GRPC_SHADOW_SSL_CIPHER_get_bits
+#define SSL_CIPHER_get_cipher_nid GRPC_SHADOW_SSL_CIPHER_get_cipher_nid
+#define SSL_CIPHER_get_digest_nid GRPC_SHADOW_SSL_CIPHER_get_digest_nid
+#define SSL_CIPHER_get_id GRPC_SHADOW_SSL_CIPHER_get_id
+#define SSL_CIPHER_get_kx_name GRPC_SHADOW_SSL_CIPHER_get_kx_name
+#define SSL_CIPHER_get_kx_nid GRPC_SHADOW_SSL_CIPHER_get_kx_nid
+#define SSL_CIPHER_get_max_version GRPC_SHADOW_SSL_CIPHER_get_max_version
+#define SSL_CIPHER_get_min_version GRPC_SHADOW_SSL_CIPHER_get_min_version
+#define SSL_CIPHER_get_name GRPC_SHADOW_SSL_CIPHER_get_name
+#define SSL_CIPHER_get_prf_nid GRPC_SHADOW_SSL_CIPHER_get_prf_nid
+#define SSL_CIPHER_get_rfc_name GRPC_SHADOW_SSL_CIPHER_get_rfc_name
+#define SSL_CIPHER_get_value GRPC_SHADOW_SSL_CIPHER_get_value
+#define SSL_CIPHER_get_version GRPC_SHADOW_SSL_CIPHER_get_version
+#define SSL_CIPHER_is_aead GRPC_SHADOW_SSL_CIPHER_is_aead
+#define SSL_CIPHER_is_block_cipher GRPC_SHADOW_SSL_CIPHER_is_block_cipher
+#define SSL_CIPHER_standard_name GRPC_SHADOW_SSL_CIPHER_standard_name
+#define SSL_clear GRPC_SHADOW_SSL_clear
+#define SSL_clear_chain_certs GRPC_SHADOW_SSL_clear_chain_certs
+#define SSL_clear_mode GRPC_SHADOW_SSL_clear_mode
+#define SSL_clear_options GRPC_SHADOW_SSL_clear_options
+#define SSL_COMP_add_compression_method GRPC_SHADOW_SSL_COMP_add_compression_method
+#define SSL_COMP_free_compression_methods GRPC_SHADOW_SSL_COMP_free_compression_methods
+#define SSL_COMP_get0_name GRPC_SHADOW_SSL_COMP_get0_name
+#define SSL_COMP_get_compression_methods GRPC_SHADOW_SSL_COMP_get_compression_methods
+#define SSL_COMP_get_id GRPC_SHADOW_SSL_COMP_get_id
+#define SSL_COMP_get_name GRPC_SHADOW_SSL_COMP_get_name
+#define SSL_connect GRPC_SHADOW_SSL_connect
+#define SSL_CTX_add0_chain_cert GRPC_SHADOW_SSL_CTX_add0_chain_cert
+#define SSL_CTX_add1_chain_cert GRPC_SHADOW_SSL_CTX_add1_chain_cert
+#define SSL_CTX_add_cert_compression_alg GRPC_SHADOW_SSL_CTX_add_cert_compression_alg
+#define SSL_CTX_add_client_CA GRPC_SHADOW_SSL_CTX_add_client_CA
+#define SSL_CTX_add_extra_chain_cert GRPC_SHADOW_SSL_CTX_add_extra_chain_cert
+#define SSL_CTX_add_session GRPC_SHADOW_SSL_CTX_add_session
+#define SSL_CTX_check_private_key GRPC_SHADOW_SSL_CTX_check_private_key
+#define SSL_CTX_cipher_in_group GRPC_SHADOW_SSL_CTX_cipher_in_group
+#define SSL_CTX_clear_chain_certs GRPC_SHADOW_SSL_CTX_clear_chain_certs
+#define SSL_CTX_clear_extra_chain_certs GRPC_SHADOW_SSL_CTX_clear_extra_chain_certs
+#define SSL_CTX_clear_mode GRPC_SHADOW_SSL_CTX_clear_mode
+#define SSL_CTX_clear_options GRPC_SHADOW_SSL_CTX_clear_options
+#define SSL_CTX_enable_ocsp_stapling GRPC_SHADOW_SSL_CTX_enable_ocsp_stapling
+#define SSL_CTX_enable_signed_cert_timestamps GRPC_SHADOW_SSL_CTX_enable_signed_cert_timestamps
+#define SSL_CTX_enable_tls_channel_id GRPC_SHADOW_SSL_CTX_enable_tls_channel_id
+#define SSL_CTX_flush_sessions GRPC_SHADOW_SSL_CTX_flush_sessions
+#define SSL_CTX_free GRPC_SHADOW_SSL_CTX_free
+#define SSL_CTX_get0_certificate GRPC_SHADOW_SSL_CTX_get0_certificate
+#define SSL_CTX_get0_chain_certs GRPC_SHADOW_SSL_CTX_get0_chain_certs
+#define SSL_CTX_get0_param GRPC_SHADOW_SSL_CTX_get0_param
+#define SSL_CTX_get0_privatekey GRPC_SHADOW_SSL_CTX_get0_privatekey
+#define SSL_CTX_get_cert_store GRPC_SHADOW_SSL_CTX_get_cert_store
+#define SSL_CTX_get_channel_id_cb GRPC_SHADOW_SSL_CTX_get_channel_id_cb
+#define SSL_CTX_get_ciphers GRPC_SHADOW_SSL_CTX_get_ciphers
+#define SSL_CTX_get_client_CA_list GRPC_SHADOW_SSL_CTX_get_client_CA_list
+#define SSL_CTX_get_default_passwd_cb GRPC_SHADOW_SSL_CTX_get_default_passwd_cb
+#define SSL_CTX_get_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_get_default_passwd_cb_userdata
+#define SSL_CTX_get_ex_data GRPC_SHADOW_SSL_CTX_get_ex_data
+#define SSL_CTX_get_ex_new_index GRPC_SHADOW_SSL_CTX_get_ex_new_index
+#define SSL_CTX_get_extra_chain_certs GRPC_SHADOW_SSL_CTX_get_extra_chain_certs
+#define SSL_CTX_get_info_callback GRPC_SHADOW_SSL_CTX_get_info_callback
+#define SSL_CTX_get_keylog_callback GRPC_SHADOW_SSL_CTX_get_keylog_callback
+#define SSL_CTX_get_max_cert_list GRPC_SHADOW_SSL_CTX_get_max_cert_list
+#define SSL_CTX_get_max_proto_version GRPC_SHADOW_SSL_CTX_get_max_proto_version
+#define SSL_CTX_get_min_proto_version GRPC_SHADOW_SSL_CTX_get_min_proto_version
+#define SSL_CTX_get_mode GRPC_SHADOW_SSL_CTX_get_mode
+#define SSL_CTX_get_options GRPC_SHADOW_SSL_CTX_get_options
+#define SSL_CTX_get_quiet_shutdown GRPC_SHADOW_SSL_CTX_get_quiet_shutdown
+#define SSL_CTX_get_read_ahead GRPC_SHADOW_SSL_CTX_get_read_ahead
+#define SSL_CTX_get_session_cache_mode GRPC_SHADOW_SSL_CTX_get_session_cache_mode
+#define SSL_CTX_get_timeout GRPC_SHADOW_SSL_CTX_get_timeout
+#define SSL_CTX_get_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_get_tlsext_ticket_keys
+#define SSL_CTX_get_verify_callback GRPC_SHADOW_SSL_CTX_get_verify_callback
+#define SSL_CTX_get_verify_depth GRPC_SHADOW_SSL_CTX_get_verify_depth
+#define SSL_CTX_get_verify_mode GRPC_SHADOW_SSL_CTX_get_verify_mode
+#define SSL_CTX_load_verify_locations GRPC_SHADOW_SSL_CTX_load_verify_locations
+#define SSL_CTX_need_tmp_RSA GRPC_SHADOW_SSL_CTX_need_tmp_RSA
+#define SSL_CTX_new GRPC_SHADOW_SSL_CTX_new
+#define SSL_CTX_remove_session GRPC_SHADOW_SSL_CTX_remove_session
+#define SSL_CTX_sess_accept GRPC_SHADOW_SSL_CTX_sess_accept
+#define SSL_CTX_sess_accept_good GRPC_SHADOW_SSL_CTX_sess_accept_good
+#define SSL_CTX_sess_accept_renegotiate GRPC_SHADOW_SSL_CTX_sess_accept_renegotiate
+#define SSL_CTX_sess_cache_full GRPC_SHADOW_SSL_CTX_sess_cache_full
+#define SSL_CTX_sess_cb_hits GRPC_SHADOW_SSL_CTX_sess_cb_hits
+#define SSL_CTX_sess_connect GRPC_SHADOW_SSL_CTX_sess_connect
+#define SSL_CTX_sess_connect_good GRPC_SHADOW_SSL_CTX_sess_connect_good
+#define SSL_CTX_sess_connect_renegotiate GRPC_SHADOW_SSL_CTX_sess_connect_renegotiate
+#define SSL_CTX_sess_get_cache_size GRPC_SHADOW_SSL_CTX_sess_get_cache_size
+#define SSL_CTX_sess_get_get_cb GRPC_SHADOW_SSL_CTX_sess_get_get_cb
+#define SSL_CTX_sess_get_new_cb GRPC_SHADOW_SSL_CTX_sess_get_new_cb
+#define SSL_CTX_sess_get_remove_cb GRPC_SHADOW_SSL_CTX_sess_get_remove_cb
+#define SSL_CTX_sess_hits GRPC_SHADOW_SSL_CTX_sess_hits
+#define SSL_CTX_sess_misses GRPC_SHADOW_SSL_CTX_sess_misses
+#define SSL_CTX_sess_number GRPC_SHADOW_SSL_CTX_sess_number
+#define SSL_CTX_sess_set_cache_size GRPC_SHADOW_SSL_CTX_sess_set_cache_size
+#define SSL_CTX_sess_set_get_cb GRPC_SHADOW_SSL_CTX_sess_set_get_cb
+#define SSL_CTX_sess_set_new_cb GRPC_SHADOW_SSL_CTX_sess_set_new_cb
+#define SSL_CTX_sess_set_remove_cb GRPC_SHADOW_SSL_CTX_sess_set_remove_cb
+#define SSL_CTX_sess_timeouts GRPC_SHADOW_SSL_CTX_sess_timeouts
+#define SSL_CTX_set0_buffer_pool GRPC_SHADOW_SSL_CTX_set0_buffer_pool
+#define SSL_CTX_set0_chain GRPC_SHADOW_SSL_CTX_set0_chain
+#define SSL_CTX_set0_client_CAs GRPC_SHADOW_SSL_CTX_set0_client_CAs
+#define SSL_CTX_set0_verify_cert_store GRPC_SHADOW_SSL_CTX_set0_verify_cert_store
+#define SSL_CTX_set1_chain GRPC_SHADOW_SSL_CTX_set1_chain
+#define SSL_CTX_set1_curves GRPC_SHADOW_SSL_CTX_set1_curves
+#define SSL_CTX_set1_curves_list GRPC_SHADOW_SSL_CTX_set1_curves_list
+#define SSL_CTX_set1_param GRPC_SHADOW_SSL_CTX_set1_param
+#define SSL_CTX_set1_sigalgs GRPC_SHADOW_SSL_CTX_set1_sigalgs
+#define SSL_CTX_set1_sigalgs_list GRPC_SHADOW_SSL_CTX_set1_sigalgs_list
+#define SSL_CTX_set1_tls_channel_id GRPC_SHADOW_SSL_CTX_set1_tls_channel_id
+#define SSL_CTX_set1_verify_cert_store GRPC_SHADOW_SSL_CTX_set1_verify_cert_store
+#define SSL_CTX_set_allow_unknown_alpn_protos GRPC_SHADOW_SSL_CTX_set_allow_unknown_alpn_protos
+#define SSL_CTX_set_alpn_protos GRPC_SHADOW_SSL_CTX_set_alpn_protos
+#define SSL_CTX_set_alpn_select_cb GRPC_SHADOW_SSL_CTX_set_alpn_select_cb
+#define SSL_CTX_set_cert_cb GRPC_SHADOW_SSL_CTX_set_cert_cb
+#define SSL_CTX_set_cert_store GRPC_SHADOW_SSL_CTX_set_cert_store
+#define SSL_CTX_set_cert_verify_callback GRPC_SHADOW_SSL_CTX_set_cert_verify_callback
+#define SSL_CTX_set_chain_and_key GRPC_SHADOW_SSL_CTX_set_chain_and_key
+#define SSL_CTX_set_channel_id_cb GRPC_SHADOW_SSL_CTX_set_channel_id_cb
+#define SSL_CTX_set_cipher_list GRPC_SHADOW_SSL_CTX_set_cipher_list
+#define SSL_CTX_set_client_CA_list GRPC_SHADOW_SSL_CTX_set_client_CA_list
+#define SSL_CTX_set_client_cert_cb GRPC_SHADOW_SSL_CTX_set_client_cert_cb
+#define SSL_CTX_set_current_time_cb GRPC_SHADOW_SSL_CTX_set_current_time_cb
+#define SSL_CTX_set_custom_verify GRPC_SHADOW_SSL_CTX_set_custom_verify
+#define SSL_CTX_set_default_passwd_cb GRPC_SHADOW_SSL_CTX_set_default_passwd_cb
+#define SSL_CTX_set_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_set_default_passwd_cb_userdata
+#define SSL_CTX_set_default_verify_paths GRPC_SHADOW_SSL_CTX_set_default_verify_paths
+#define SSL_CTX_set_dos_protection_cb GRPC_SHADOW_SSL_CTX_set_dos_protection_cb
+#define SSL_CTX_set_early_data_enabled GRPC_SHADOW_SSL_CTX_set_early_data_enabled
+#define SSL_CTX_set_ed25519_enabled GRPC_SHADOW_SSL_CTX_set_ed25519_enabled
+#define SSL_CTX_set_ex_data GRPC_SHADOW_SSL_CTX_set_ex_data
+#define SSL_CTX_set_false_start_allowed_without_alpn GRPC_SHADOW_SSL_CTX_set_false_start_allowed_without_alpn
+#define SSL_CTX_set_grease_enabled GRPC_SHADOW_SSL_CTX_set_grease_enabled
+#define SSL_CTX_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_CTX_set_ignore_tls13_downgrade
+#define SSL_CTX_set_info_callback GRPC_SHADOW_SSL_CTX_set_info_callback
+#define SSL_CTX_set_keylog_callback GRPC_SHADOW_SSL_CTX_set_keylog_callback
+#define SSL_CTX_set_max_cert_list GRPC_SHADOW_SSL_CTX_set_max_cert_list
+#define SSL_CTX_set_max_proto_version GRPC_SHADOW_SSL_CTX_set_max_proto_version
+#define SSL_CTX_set_max_send_fragment GRPC_SHADOW_SSL_CTX_set_max_send_fragment
+#define SSL_CTX_set_min_proto_version GRPC_SHADOW_SSL_CTX_set_min_proto_version
+#define SSL_CTX_set_mode GRPC_SHADOW_SSL_CTX_set_mode
+#define SSL_CTX_set_msg_callback GRPC_SHADOW_SSL_CTX_set_msg_callback
+#define SSL_CTX_set_msg_callback_arg GRPC_SHADOW_SSL_CTX_set_msg_callback_arg
+#define SSL_CTX_set_next_protos_advertised_cb GRPC_SHADOW_SSL_CTX_set_next_protos_advertised_cb
+#define SSL_CTX_set_next_proto_select_cb GRPC_SHADOW_SSL_CTX_set_next_proto_select_cb
+#define SSL_CTX_set_ocsp_response GRPC_SHADOW_SSL_CTX_set_ocsp_response
+#define SSL_CTX_set_options GRPC_SHADOW_SSL_CTX_set_options
+#define SSL_CTX_set_private_key_method GRPC_SHADOW_SSL_CTX_set_private_key_method
+#define SSL_CTX_set_psk_client_callback GRPC_SHADOW_SSL_CTX_set_psk_client_callback
+#define SSL_CTX_set_psk_server_callback GRPC_SHADOW_SSL_CTX_set_psk_server_callback
+#define SSL_CTX_set_purpose GRPC_SHADOW_SSL_CTX_set_purpose
+#define SSL_CTX_set_quic_method GRPC_SHADOW_SSL_CTX_set_quic_method
+#define SSL_CTX_set_quiet_shutdown GRPC_SHADOW_SSL_CTX_set_quiet_shutdown
+#define SSL_CTX_set_read_ahead GRPC_SHADOW_SSL_CTX_set_read_ahead
+#define SSL_CTX_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_CTX_set_retain_only_sha256_of_client_certs
+#define SSL_CTX_set_reverify_on_resume GRPC_SHADOW_SSL_CTX_set_reverify_on_resume
+#define SSL_CTX_set_select_certificate_cb GRPC_SHADOW_SSL_CTX_set_select_certificate_cb
+#define SSL_CTX_set_session_cache_mode GRPC_SHADOW_SSL_CTX_set_session_cache_mode
+#define SSL_CTX_set_session_id_context GRPC_SHADOW_SSL_CTX_set_session_id_context
+#define SSL_CTX_set_session_psk_dhe_timeout GRPC_SHADOW_SSL_CTX_set_session_psk_dhe_timeout
+#define SSL_CTX_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_CTX_set_signed_cert_timestamp_list
+#define SSL_CTX_set_signing_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_signing_algorithm_prefs
+#define SSL_CTX_set_srtp_profiles GRPC_SHADOW_SSL_CTX_set_srtp_profiles
+#define SSL_CTX_set_strict_cipher_list GRPC_SHADOW_SSL_CTX_set_strict_cipher_list
+#define SSL_CTX_set_ticket_aead_method GRPC_SHADOW_SSL_CTX_set_ticket_aead_method
+#define SSL_CTX_set_timeout GRPC_SHADOW_SSL_CTX_set_timeout
+#define SSL_CTX_set_tls_channel_id_enabled GRPC_SHADOW_SSL_CTX_set_tls_channel_id_enabled
+#define SSL_CTX_set_tlsext_servername_arg GRPC_SHADOW_SSL_CTX_set_tlsext_servername_arg
+#define SSL_CTX_set_tlsext_servername_callback GRPC_SHADOW_SSL_CTX_set_tlsext_servername_callback
+#define SSL_CTX_set_tlsext_status_arg GRPC_SHADOW_SSL_CTX_set_tlsext_status_arg
+#define SSL_CTX_set_tlsext_status_cb GRPC_SHADOW_SSL_CTX_set_tlsext_status_cb
+#define SSL_CTX_set_tlsext_ticket_key_cb GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_key_cb
+#define SSL_CTX_set_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_keys
+#define SSL_CTX_set_tlsext_use_srtp GRPC_SHADOW_SSL_CTX_set_tlsext_use_srtp
+#define SSL_CTX_set_tmp_dh GRPC_SHADOW_SSL_CTX_set_tmp_dh
+#define SSL_CTX_set_tmp_dh_callback GRPC_SHADOW_SSL_CTX_set_tmp_dh_callback
+#define SSL_CTX_set_tmp_ecdh GRPC_SHADOW_SSL_CTX_set_tmp_ecdh
+#define SSL_CTX_set_tmp_rsa GRPC_SHADOW_SSL_CTX_set_tmp_rsa
+#define SSL_CTX_set_tmp_rsa_callback GRPC_SHADOW_SSL_CTX_set_tmp_rsa_callback
+#define SSL_CTX_set_trust GRPC_SHADOW_SSL_CTX_set_trust
+#define SSL_CTX_set_verify GRPC_SHADOW_SSL_CTX_set_verify
+#define SSL_CTX_set_verify_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_verify_algorithm_prefs
+#define SSL_CTX_set_verify_depth GRPC_SHADOW_SSL_CTX_set_verify_depth
+#define SSL_CTX_up_ref GRPC_SHADOW_SSL_CTX_up_ref
+#define SSL_CTX_use_certificate GRPC_SHADOW_SSL_CTX_use_certificate
+#define SSL_CTX_use_certificate_ASN1 GRPC_SHADOW_SSL_CTX_use_certificate_ASN1
+#define SSL_CTX_use_certificate_chain_file GRPC_SHADOW_SSL_CTX_use_certificate_chain_file
+#define SSL_CTX_use_certificate_file GRPC_SHADOW_SSL_CTX_use_certificate_file
+#define SSL_CTX_use_PrivateKey GRPC_SHADOW_SSL_CTX_use_PrivateKey
+#define SSL_CTX_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_PrivateKey_ASN1
+#define SSL_CTX_use_PrivateKey_file GRPC_SHADOW_SSL_CTX_use_PrivateKey_file
+#define SSL_CTX_use_psk_identity_hint GRPC_SHADOW_SSL_CTX_use_psk_identity_hint
+#define SSL_CTX_use_RSAPrivateKey GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey
+#define SSL_CTX_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_ASN1
+#define SSL_CTX_use_RSAPrivateKey_file GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_file
+#define SSL_cutthrough_complete GRPC_SHADOW_SSL_cutthrough_complete
+#define SSL_delegated_credential_used GRPC_SHADOW_SSL_delegated_credential_used
+#define SSL_do_handshake GRPC_SHADOW_SSL_do_handshake
+#define SSL_dup_CA_list GRPC_SHADOW_SSL_dup_CA_list
+#define SSL_early_callback_ctx_extension_get GRPC_SHADOW_SSL_early_callback_ctx_extension_get
+#define SSL_early_data_accepted GRPC_SHADOW_SSL_early_data_accepted
+#define SSLeay GRPC_SHADOW_SSLeay
+#define SSLeay_version GRPC_SHADOW_SSLeay_version
+#define SSL_enable_ocsp_stapling GRPC_SHADOW_SSL_enable_ocsp_stapling
+#define SSL_enable_signed_cert_timestamps GRPC_SHADOW_SSL_enable_signed_cert_timestamps
+#define SSL_enable_tls_channel_id GRPC_SHADOW_SSL_enable_tls_channel_id
+#define SSL_error_description GRPC_SHADOW_SSL_error_description
+#define SSL_export_keying_material GRPC_SHADOW_SSL_export_keying_material
+#define SSL_free GRPC_SHADOW_SSL_free
+#define SSL_generate_key_block GRPC_SHADOW_SSL_generate_key_block
+#define SSL_get0_alpn_selected GRPC_SHADOW_SSL_get0_alpn_selected
+#define SSL_get0_certificate_types GRPC_SHADOW_SSL_get0_certificate_types
+#define SSL_get0_chain_certs GRPC_SHADOW_SSL_get0_chain_certs
+#define SSL_get0_next_proto_negotiated GRPC_SHADOW_SSL_get0_next_proto_negotiated
+#define SSL_get0_ocsp_response GRPC_SHADOW_SSL_get0_ocsp_response
+#define SSL_get0_param GRPC_SHADOW_SSL_get0_param
+#define SSL_get0_peer_certificates GRPC_SHADOW_SSL_get0_peer_certificates
+#define SSL_get0_peer_verify_algorithms GRPC_SHADOW_SSL_get0_peer_verify_algorithms
+#define SSL_get0_server_requested_CAs GRPC_SHADOW_SSL_get0_server_requested_CAs
+#define SSL_get0_session_id_context GRPC_SHADOW_SSL_get0_session_id_context
+#define SSL_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_get0_signed_cert_timestamp_list
+#define SSL_get1_session GRPC_SHADOW_SSL_get1_session
+#define SSL_get_certificate GRPC_SHADOW_SSL_get_certificate
+#define SSL_get_cipher_by_value GRPC_SHADOW_SSL_get_cipher_by_value
+#define SSL_get_cipher_list GRPC_SHADOW_SSL_get_cipher_list
+#define SSL_get_ciphers GRPC_SHADOW_SSL_get_ciphers
+#define SSL_get_client_CA_list GRPC_SHADOW_SSL_get_client_CA_list
+#define SSL_get_client_random GRPC_SHADOW_SSL_get_client_random
+#define SSL_get_current_cipher GRPC_SHADOW_SSL_get_current_cipher
+#define SSL_get_current_compression GRPC_SHADOW_SSL_get_current_compression
+#define SSL_get_current_expansion GRPC_SHADOW_SSL_get_current_expansion
+#define SSL_get_curve_id GRPC_SHADOW_SSL_get_curve_id
+#define SSL_get_curve_name GRPC_SHADOW_SSL_get_curve_name
+#define SSL_get_default_timeout GRPC_SHADOW_SSL_get_default_timeout
+#define SSL_get_early_data_reason GRPC_SHADOW_SSL_get_early_data_reason
+#define SSL_get_error GRPC_SHADOW_SSL_get_error
+#define SSL_get_ex_data GRPC_SHADOW_SSL_get_ex_data
+#define SSL_get_ex_data_X509_STORE_CTX_idx GRPC_SHADOW_SSL_get_ex_data_X509_STORE_CTX_idx
+#define SSL_get_ex_new_index GRPC_SHADOW_SSL_get_ex_new_index
+#define SSL_get_extms_support GRPC_SHADOW_SSL_get_extms_support
+#define SSL_get_fd GRPC_SHADOW_SSL_get_fd
+#define SSL_get_finished GRPC_SHADOW_SSL_get_finished
+#define SSL_get_info_callback GRPC_SHADOW_SSL_get_info_callback
+#define SSL_get_ivs GRPC_SHADOW_SSL_get_ivs
+#define SSL_get_key_block_len GRPC_SHADOW_SSL_get_key_block_len
+#define SSL_get_max_cert_list GRPC_SHADOW_SSL_get_max_cert_list
+#define SSL_get_max_proto_version GRPC_SHADOW_SSL_get_max_proto_version
+#define SSL_get_min_proto_version GRPC_SHADOW_SSL_get_min_proto_version
+#define SSL_get_mode GRPC_SHADOW_SSL_get_mode
+#define SSL_get_negotiated_token_binding_param GRPC_SHADOW_SSL_get_negotiated_token_binding_param
+#define SSL_get_options GRPC_SHADOW_SSL_get_options
+#define SSL_get_peer_cert_chain GRPC_SHADOW_SSL_get_peer_cert_chain
+#define SSL_get_peer_certificate GRPC_SHADOW_SSL_get_peer_certificate
+#define SSL_get_peer_finished GRPC_SHADOW_SSL_get_peer_finished
+#define SSL_get_peer_full_cert_chain GRPC_SHADOW_SSL_get_peer_full_cert_chain
+#define SSL_get_peer_quic_transport_params GRPC_SHADOW_SSL_get_peer_quic_transport_params
+#define SSL_get_peer_signature_algorithm GRPC_SHADOW_SSL_get_peer_signature_algorithm
+#define SSL_get_pending_cipher GRPC_SHADOW_SSL_get_pending_cipher
+#define SSL_get_privatekey GRPC_SHADOW_SSL_get_privatekey
+#define SSL_get_psk_identity GRPC_SHADOW_SSL_get_psk_identity
+#define SSL_get_psk_identity_hint GRPC_SHADOW_SSL_get_psk_identity_hint
+#define SSL_get_quiet_shutdown GRPC_SHADOW_SSL_get_quiet_shutdown
+#define SSL_get_rbio GRPC_SHADOW_SSL_get_rbio
+#define SSL_get_read_ahead GRPC_SHADOW_SSL_get_read_ahead
+#define SSL_get_read_sequence GRPC_SHADOW_SSL_get_read_sequence
+#define SSL_get_rfd GRPC_SHADOW_SSL_get_rfd
+#define SSL_get_secure_renegotiation_support GRPC_SHADOW_SSL_get_secure_renegotiation_support
+#define SSL_get_selected_srtp_profile GRPC_SHADOW_SSL_get_selected_srtp_profile
+#define SSL_get_servername GRPC_SHADOW_SSL_get_servername
+#define SSL_get_servername_type GRPC_SHADOW_SSL_get_servername_type
+#define SSL_get_server_random GRPC_SHADOW_SSL_get_server_random
+#define SSL_get_server_tmp_key GRPC_SHADOW_SSL_get_server_tmp_key
+#define SSL_get_session GRPC_SHADOW_SSL_get_session
+#define SSL_get_shared_ciphers GRPC_SHADOW_SSL_get_shared_ciphers
+#define SSL_get_shared_sigalgs GRPC_SHADOW_SSL_get_shared_sigalgs
+#define SSL_get_shutdown GRPC_SHADOW_SSL_get_shutdown
+#define SSL_get_signature_algorithm_digest GRPC_SHADOW_SSL_get_signature_algorithm_digest
+#define SSL_get_signature_algorithm_key_type GRPC_SHADOW_SSL_get_signature_algorithm_key_type
+#define SSL_get_signature_algorithm_name GRPC_SHADOW_SSL_get_signature_algorithm_name
+#define SSL_get_srtp_profiles GRPC_SHADOW_SSL_get_srtp_profiles
+#define SSL_get_SSL_CTX GRPC_SHADOW_SSL_get_SSL_CTX
+#define SSL_get_ticket_age_skew GRPC_SHADOW_SSL_get_ticket_age_skew
+#define SSL_get_tls_channel_id GRPC_SHADOW_SSL_get_tls_channel_id
+#define SSL_get_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_get_tlsext_status_ocsp_resp
+#define SSL_get_tlsext_status_type GRPC_SHADOW_SSL_get_tlsext_status_type
+#define SSL_get_tls_unique GRPC_SHADOW_SSL_get_tls_unique
+#define SSL_get_verify_callback GRPC_SHADOW_SSL_get_verify_callback
+#define SSL_get_verify_depth GRPC_SHADOW_SSL_get_verify_depth
+#define SSL_get_verify_mode GRPC_SHADOW_SSL_get_verify_mode
+#define SSL_get_verify_result GRPC_SHADOW_SSL_get_verify_result
+#define SSL_get_version GRPC_SHADOW_SSL_get_version
+#define SSL_get_wbio GRPC_SHADOW_SSL_get_wbio
+#define SSL_get_wfd GRPC_SHADOW_SSL_get_wfd
+#define SSL_get_write_sequence GRPC_SHADOW_SSL_get_write_sequence
+#define SSL_in_early_data GRPC_SHADOW_SSL_in_early_data
+#define SSL_in_false_start GRPC_SHADOW_SSL_in_false_start
+#define SSL_in_init GRPC_SHADOW_SSL_in_init
+#define SSL_is_dtls GRPC_SHADOW_SSL_is_dtls
+#define SSL_is_init_finished GRPC_SHADOW_SSL_is_init_finished
+#define SSL_is_server GRPC_SHADOW_SSL_is_server
+#define SSL_is_signature_algorithm_rsa_pss GRPC_SHADOW_SSL_is_signature_algorithm_rsa_pss
+#define SSL_is_tls13_downgrade GRPC_SHADOW_SSL_is_tls13_downgrade
+#define SSL_is_token_binding_negotiated GRPC_SHADOW_SSL_is_token_binding_negotiated
+#define SSL_key_update GRPC_SHADOW_SSL_key_update
+#define SSL_library_init GRPC_SHADOW_SSL_library_init
+#define SSL_load_client_CA_file GRPC_SHADOW_SSL_load_client_CA_file
+#define SSL_load_error_strings GRPC_SHADOW_SSL_load_error_strings
+#define SSL_magic_pending_session_ptr GRPC_SHADOW_SSL_magic_pending_session_ptr
+#define SSL_max_seal_overhead GRPC_SHADOW_SSL_max_seal_overhead
+#define SSL_need_tmp_RSA GRPC_SHADOW_SSL_need_tmp_RSA
+#define SSL_new GRPC_SHADOW_SSL_new
+#define SSL_num_renegotiations GRPC_SHADOW_SSL_num_renegotiations
+#define SSL_peek GRPC_SHADOW_SSL_peek
+#define SSL_pending GRPC_SHADOW_SSL_pending
+#define SSL_process_quic_post_handshake GRPC_SHADOW_SSL_process_quic_post_handshake
+#define SSL_provide_quic_data GRPC_SHADOW_SSL_provide_quic_data
+#define SSL_quic_max_handshake_flight_len GRPC_SHADOW_SSL_quic_max_handshake_flight_len
+#define SSL_quic_read_level GRPC_SHADOW_SSL_quic_read_level
+#define SSL_quic_write_level GRPC_SHADOW_SSL_quic_write_level
+#define SSL_read GRPC_SHADOW_SSL_read
+#define SSL_renegotiate GRPC_SHADOW_SSL_renegotiate
+#define SSL_renegotiate_pending GRPC_SHADOW_SSL_renegotiate_pending
+#define SSL_reset_early_data_reject GRPC_SHADOW_SSL_reset_early_data_reject
+#define SSL_select_next_proto GRPC_SHADOW_SSL_select_next_proto
+#define SSL_send_fatal_alert GRPC_SHADOW_SSL_send_fatal_alert
+#define SSL_SESSION_early_data_capable GRPC_SHADOW_SSL_SESSION_early_data_capable
+#define SSL_SESSION_free GRPC_SHADOW_SSL_SESSION_free
+#define SSL_SESSION_from_bytes GRPC_SHADOW_SSL_SESSION_from_bytes
+#define SSL_SESSION_get0_cipher GRPC_SHADOW_SSL_SESSION_get0_cipher
+#define SSL_SESSION_get0_id_context GRPC_SHADOW_SSL_SESSION_get0_id_context
+#define SSL_SESSION_get0_ocsp_response GRPC_SHADOW_SSL_SESSION_get0_ocsp_response
+#define SSL_SESSION_get0_peer GRPC_SHADOW_SSL_SESSION_get0_peer
+#define SSL_SESSION_get0_peer_certificates GRPC_SHADOW_SSL_SESSION_get0_peer_certificates
+#define SSL_SESSION_get0_peer_sha256 GRPC_SHADOW_SSL_SESSION_get0_peer_sha256
+#define SSL_SESSION_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_SESSION_get0_signed_cert_timestamp_list
+#define SSL_SESSION_get0_ticket GRPC_SHADOW_SSL_SESSION_get0_ticket
+#define SSL_SESSION_get_ex_data GRPC_SHADOW_SSL_SESSION_get_ex_data
+#define SSL_SESSION_get_ex_new_index GRPC_SHADOW_SSL_SESSION_get_ex_new_index
+#define SSL_SESSION_get_id GRPC_SHADOW_SSL_SESSION_get_id
+#define SSL_SESSION_get_master_key GRPC_SHADOW_SSL_SESSION_get_master_key
+#define SSL_SESSION_get_protocol_version GRPC_SHADOW_SSL_SESSION_get_protocol_version
+#define SSL_SESSION_get_ticket_lifetime_hint GRPC_SHADOW_SSL_SESSION_get_ticket_lifetime_hint
+#define SSL_SESSION_get_time GRPC_SHADOW_SSL_SESSION_get_time
+#define SSL_SESSION_get_timeout GRPC_SHADOW_SSL_SESSION_get_timeout
+#define SSL_SESSION_get_version GRPC_SHADOW_SSL_SESSION_get_version
+#define SSL_SESSION_has_peer_sha256 GRPC_SHADOW_SSL_SESSION_has_peer_sha256
+#define SSL_SESSION_has_ticket GRPC_SHADOW_SSL_SESSION_has_ticket
+#define SSL_SESSION_is_resumable GRPC_SHADOW_SSL_SESSION_is_resumable
+#define SSL_SESSION_new GRPC_SHADOW_SSL_SESSION_new
+#define SSL_session_reused GRPC_SHADOW_SSL_session_reused
+#define SSL_SESSION_set1_id GRPC_SHADOW_SSL_SESSION_set1_id
+#define SSL_SESSION_set1_id_context GRPC_SHADOW_SSL_SESSION_set1_id_context
+#define SSL_SESSION_set_ex_data GRPC_SHADOW_SSL_SESSION_set_ex_data
+#define SSL_SESSION_set_protocol_version GRPC_SHADOW_SSL_SESSION_set_protocol_version
+#define SSL_SESSION_set_ticket GRPC_SHADOW_SSL_SESSION_set_ticket
+#define SSL_SESSION_set_time GRPC_SHADOW_SSL_SESSION_set_time
+#define SSL_SESSION_set_timeout GRPC_SHADOW_SSL_SESSION_set_timeout
+#define SSL_SESSION_should_be_single_use GRPC_SHADOW_SSL_SESSION_should_be_single_use
+#define SSL_SESSION_to_bytes GRPC_SHADOW_SSL_SESSION_to_bytes
+#define SSL_SESSION_to_bytes_for_ticket GRPC_SHADOW_SSL_SESSION_to_bytes_for_ticket
+#define SSL_SESSION_up_ref GRPC_SHADOW_SSL_SESSION_up_ref
+#define SSL_set0_chain GRPC_SHADOW_SSL_set0_chain
+#define SSL_set0_client_CAs GRPC_SHADOW_SSL_set0_client_CAs
+#define SSL_set0_rbio GRPC_SHADOW_SSL_set0_rbio
+#define SSL_set0_verify_cert_store GRPC_SHADOW_SSL_set0_verify_cert_store
+#define SSL_set0_wbio GRPC_SHADOW_SSL_set0_wbio
+#define SSL_set1_chain GRPC_SHADOW_SSL_set1_chain
+#define SSL_set1_curves GRPC_SHADOW_SSL_set1_curves
+#define SSL_set1_curves_list GRPC_SHADOW_SSL_set1_curves_list
+#define SSL_set1_delegated_credential GRPC_SHADOW_SSL_set1_delegated_credential
+#define SSL_set1_param GRPC_SHADOW_SSL_set1_param
+#define SSL_set1_sigalgs GRPC_SHADOW_SSL_set1_sigalgs
+#define SSL_set1_sigalgs_list GRPC_SHADOW_SSL_set1_sigalgs_list
+#define SSL_set1_tls_channel_id GRPC_SHADOW_SSL_set1_tls_channel_id
+#define SSL_set1_verify_cert_store GRPC_SHADOW_SSL_set1_verify_cert_store
+#define SSL_set_accept_state GRPC_SHADOW_SSL_set_accept_state
+#define SSL_set_alpn_protos GRPC_SHADOW_SSL_set_alpn_protos
+#define SSL_set_bio GRPC_SHADOW_SSL_set_bio
+#define SSL_set_cert_cb GRPC_SHADOW_SSL_set_cert_cb
+#define SSL_set_chain_and_key GRPC_SHADOW_SSL_set_chain_and_key
+#define SSL_set_cipher_list GRPC_SHADOW_SSL_set_cipher_list
+#define SSL_set_client_CA_list GRPC_SHADOW_SSL_set_client_CA_list
+#define SSL_set_connect_state GRPC_SHADOW_SSL_set_connect_state
+#define SSL_set_custom_verify GRPC_SHADOW_SSL_set_custom_verify
+#define SSL_set_early_data_enabled GRPC_SHADOW_SSL_set_early_data_enabled
+#define SSL_set_enforce_rsa_key_usage GRPC_SHADOW_SSL_set_enforce_rsa_key_usage
+#define SSL_set_ex_data GRPC_SHADOW_SSL_set_ex_data
+#define SSL_set_fd GRPC_SHADOW_SSL_set_fd
+#define SSL_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_set_ignore_tls13_downgrade
+#define SSL_set_info_callback GRPC_SHADOW_SSL_set_info_callback
+#define SSL_set_jdk11_workaround GRPC_SHADOW_SSL_set_jdk11_workaround
+#define SSL_set_max_cert_list GRPC_SHADOW_SSL_set_max_cert_list
+#define SSL_set_max_proto_version GRPC_SHADOW_SSL_set_max_proto_version
+#define SSL_set_max_send_fragment GRPC_SHADOW_SSL_set_max_send_fragment
+#define SSL_set_min_proto_version GRPC_SHADOW_SSL_set_min_proto_version
+#define SSL_set_mode GRPC_SHADOW_SSL_set_mode
+#define SSL_set_msg_callback GRPC_SHADOW_SSL_set_msg_callback
+#define SSL_set_msg_callback_arg GRPC_SHADOW_SSL_set_msg_callback_arg
+#define SSL_set_mtu GRPC_SHADOW_SSL_set_mtu
+#define SSL_set_ocsp_response GRPC_SHADOW_SSL_set_ocsp_response
+#define SSL_set_options GRPC_SHADOW_SSL_set_options
+#define SSL_set_private_key_method GRPC_SHADOW_SSL_set_private_key_method
+#define SSL_set_psk_client_callback GRPC_SHADOW_SSL_set_psk_client_callback
+#define SSL_set_psk_server_callback GRPC_SHADOW_SSL_set_psk_server_callback
+#define SSL_set_purpose GRPC_SHADOW_SSL_set_purpose
+#define SSL_set_quic_method GRPC_SHADOW_SSL_set_quic_method
+#define SSL_set_quic_transport_params GRPC_SHADOW_SSL_set_quic_transport_params
+#define SSL_set_quiet_shutdown GRPC_SHADOW_SSL_set_quiet_shutdown
+#define SSL_set_read_ahead GRPC_SHADOW_SSL_set_read_ahead
+#define SSL_set_renegotiate_mode GRPC_SHADOW_SSL_set_renegotiate_mode
+#define SSL_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_set_retain_only_sha256_of_client_certs
+#define SSL_set_rfd GRPC_SHADOW_SSL_set_rfd
+#define SSL_set_session GRPC_SHADOW_SSL_set_session
+#define SSL_set_session_id_context GRPC_SHADOW_SSL_set_session_id_context
+#define SSL_set_shed_handshake_config GRPC_SHADOW_SSL_set_shed_handshake_config
+#define SSL_set_shutdown GRPC_SHADOW_SSL_set_shutdown
+#define SSL_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_set_signed_cert_timestamp_list
+#define SSL_set_signing_algorithm_prefs GRPC_SHADOW_SSL_set_signing_algorithm_prefs
+#define SSL_set_srtp_profiles GRPC_SHADOW_SSL_set_srtp_profiles
+#define SSL_set_SSL_CTX GRPC_SHADOW_SSL_set_SSL_CTX
+#define SSL_set_state GRPC_SHADOW_SSL_set_state
+#define SSL_set_strict_cipher_list GRPC_SHADOW_SSL_set_strict_cipher_list
+#define SSL_set_tls_channel_id_enabled GRPC_SHADOW_SSL_set_tls_channel_id_enabled
+#define SSL_set_tlsext_host_name GRPC_SHADOW_SSL_set_tlsext_host_name
+#define SSL_set_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_set_tlsext_status_ocsp_resp
+#define SSL_set_tlsext_status_type GRPC_SHADOW_SSL_set_tlsext_status_type
+#define SSL_set_tlsext_use_srtp GRPC_SHADOW_SSL_set_tlsext_use_srtp
+#define SSL_set_tmp_dh GRPC_SHADOW_SSL_set_tmp_dh
+#define SSL_set_tmp_dh_callback GRPC_SHADOW_SSL_set_tmp_dh_callback
+#define SSL_set_tmp_ecdh GRPC_SHADOW_SSL_set_tmp_ecdh
+#define SSL_set_tmp_rsa GRPC_SHADOW_SSL_set_tmp_rsa
+#define SSL_set_tmp_rsa_callback GRPC_SHADOW_SSL_set_tmp_rsa_callback
+#define SSL_set_token_binding_params GRPC_SHADOW_SSL_set_token_binding_params
+#define SSL_set_trust GRPC_SHADOW_SSL_set_trust
+#define SSL_set_verify GRPC_SHADOW_SSL_set_verify
+#define SSL_set_verify_depth GRPC_SHADOW_SSL_set_verify_depth
+#define SSL_set_verify_result GRPC_SHADOW_SSL_set_verify_result
+#define SSL_set_wfd GRPC_SHADOW_SSL_set_wfd
+#define SSL_shutdown GRPC_SHADOW_SSL_shutdown
+#define SSL_state GRPC_SHADOW_SSL_state
+#define SSL_state_string GRPC_SHADOW_SSL_state_string
+#define SSL_state_string_long GRPC_SHADOW_SSL_state_string_long
+#define SSL_total_renegotiations GRPC_SHADOW_SSL_total_renegotiations
+#define SSL_use_certificate GRPC_SHADOW_SSL_use_certificate
+#define SSL_use_certificate_ASN1 GRPC_SHADOW_SSL_use_certificate_ASN1
+#define SSL_use_certificate_file GRPC_SHADOW_SSL_use_certificate_file
+#define SSL_used_hello_retry_request GRPC_SHADOW_SSL_used_hello_retry_request
+#define SSL_use_PrivateKey GRPC_SHADOW_SSL_use_PrivateKey
+#define SSL_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_use_PrivateKey_ASN1
+#define SSL_use_PrivateKey_file GRPC_SHADOW_SSL_use_PrivateKey_file
+#define SSL_use_psk_identity_hint GRPC_SHADOW_SSL_use_psk_identity_hint
+#define SSL_use_RSAPrivateKey GRPC_SHADOW_SSL_use_RSAPrivateKey
+#define SSL_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_use_RSAPrivateKey_ASN1
+#define SSL_use_RSAPrivateKey_file GRPC_SHADOW_SSL_use_RSAPrivateKey_file
+#define SSLv23_client_method GRPC_SHADOW_SSLv23_client_method
+#define SSLv23_method GRPC_SHADOW_SSLv23_method
+#define SSLv23_server_method GRPC_SHADOW_SSLv23_server_method
+#define SSL_version GRPC_SHADOW_SSL_version
+#define SSL_want GRPC_SHADOW_SSL_want
+#define SSL_write GRPC_SHADOW_SSL_write
+#define SXNET_add_id_asc GRPC_SHADOW_SXNET_add_id_asc
+#define SXNET_add_id_INTEGER GRPC_SHADOW_SXNET_add_id_INTEGER
+#define SXNET_add_id_ulong GRPC_SHADOW_SXNET_add_id_ulong
+#define SXNET_free GRPC_SHADOW_SXNET_free
+#define SXNET_get_id_asc GRPC_SHADOW_SXNET_get_id_asc
+#define SXNET_get_id_INTEGER GRPC_SHADOW_SXNET_get_id_INTEGER
+#define SXNET_get_id_ulong GRPC_SHADOW_SXNET_get_id_ulong
+#define SXNETID_free GRPC_SHADOW_SXNETID_free
+#define SXNETID_it GRPC_SHADOW_SXNETID_it
+#define SXNETID_new GRPC_SHADOW_SXNETID_new
+#define SXNET_it GRPC_SHADOW_SXNET_it
+#define SXNET_new GRPC_SHADOW_SXNET_new
+#define TLS_client_method GRPC_SHADOW_TLS_client_method
+#define TLS_method GRPC_SHADOW_TLS_method
+#define TLS_server_method GRPC_SHADOW_TLS_server_method
+#define TLSv1_1_client_method GRPC_SHADOW_TLSv1_1_client_method
+#define TLSv1_1_method GRPC_SHADOW_TLSv1_1_method
+#define TLSv1_1_server_method GRPC_SHADOW_TLSv1_1_server_method
+#define TLSv1_2_client_method GRPC_SHADOW_TLSv1_2_client_method
+#define TLSv1_2_method GRPC_SHADOW_TLSv1_2_method
+#define TLSv1_2_server_method GRPC_SHADOW_TLSv1_2_server_method
+#define TLSv1_client_method GRPC_SHADOW_TLSv1_client_method
+#define TLSv1_method GRPC_SHADOW_TLSv1_method
+#define TLSv1_server_method GRPC_SHADOW_TLSv1_server_method
+#define TLS_with_buffers_method GRPC_SHADOW_TLS_with_buffers_method
+#define tree_find_sk GRPC_SHADOW_tree_find_sk
+#define USERNOTICE_free GRPC_SHADOW_USERNOTICE_free
+#define USERNOTICE_it GRPC_SHADOW_USERNOTICE_it
+#define USERNOTICE_new GRPC_SHADOW_USERNOTICE_new
+#define UTF8_getc GRPC_SHADOW_UTF8_getc
+#define UTF8_putc GRPC_SHADOW_UTF8_putc
+#define v2i_ASN1_BIT_STRING GRPC_SHADOW_v2i_ASN1_BIT_STRING
+#define v2i_GENERAL_NAME GRPC_SHADOW_v2i_GENERAL_NAME
+#define v2i_GENERAL_NAME_ex GRPC_SHADOW_v2i_GENERAL_NAME_ex
+#define v2i_GENERAL_NAMES GRPC_SHADOW_v2i_GENERAL_NAMES
+#define v3_akey_id GRPC_SHADOW_v3_akey_id
+#define v3_alt GRPC_SHADOW_v3_alt
+#define v3_bcons GRPC_SHADOW_v3_bcons
+#define v3_cpols GRPC_SHADOW_v3_cpols
+#define v3_crld GRPC_SHADOW_v3_crld
+#define v3_crl_invdate GRPC_SHADOW_v3_crl_invdate
+#define v3_crl_num GRPC_SHADOW_v3_crl_num
+#define v3_crl_reason GRPC_SHADOW_v3_crl_reason
+#define v3_delta_crl GRPC_SHADOW_v3_delta_crl
+#define v3_ext_ku GRPC_SHADOW_v3_ext_ku
+#define v3_freshest_crl GRPC_SHADOW_v3_freshest_crl
+#define v3_idp GRPC_SHADOW_v3_idp
+#define v3_info GRPC_SHADOW_v3_info
+#define v3_inhibit_anyp GRPC_SHADOW_v3_inhibit_anyp
+#define v3_key_usage GRPC_SHADOW_v3_key_usage
+#define v3_name_constraints GRPC_SHADOW_v3_name_constraints
+#define v3_nscert GRPC_SHADOW_v3_nscert
+#define v3_ns_ia5_list GRPC_SHADOW_v3_ns_ia5_list
+#define v3_ocsp_accresp GRPC_SHADOW_v3_ocsp_accresp
+#define v3_ocsp_nocheck GRPC_SHADOW_v3_ocsp_nocheck
+#define v3_pci GRPC_SHADOW_v3_pci
+#define v3_pkey_usage_period GRPC_SHADOW_v3_pkey_usage_period
+#define v3_policy_constraints GRPC_SHADOW_v3_policy_constraints
+#define v3_policy_mappings GRPC_SHADOW_v3_policy_mappings
+#define v3_sinfo GRPC_SHADOW_v3_sinfo
+#define v3_skey_id GRPC_SHADOW_v3_skey_id
+#define v3_sxnet GRPC_SHADOW_v3_sxnet
+#define vpaes_cbc_encrypt GRPC_SHADOW_vpaes_cbc_encrypt
+#define vpaes_ctr32_encrypt_blocks GRPC_SHADOW_vpaes_ctr32_encrypt_blocks
+#define vpaes_decrypt GRPC_SHADOW_vpaes_decrypt
+#define vpaes_encrypt GRPC_SHADOW_vpaes_encrypt
+#define vpaes_set_decrypt_key GRPC_SHADOW_vpaes_set_decrypt_key
+#define vpaes_set_encrypt_key GRPC_SHADOW_vpaes_set_encrypt_key
+#define X25519 GRPC_SHADOW_X25519
+#define x25519_asn1_meth GRPC_SHADOW_x25519_asn1_meth
+#define x25519_ge_add GRPC_SHADOW_x25519_ge_add
+#define x25519_ge_frombytes_vartime GRPC_SHADOW_x25519_ge_frombytes_vartime
+#define x25519_ge_p1p1_to_p2 GRPC_SHADOW_x25519_ge_p1p1_to_p2
+#define x25519_ge_p1p1_to_p3 GRPC_SHADOW_x25519_ge_p1p1_to_p3
+#define x25519_ge_p3_to_cached GRPC_SHADOW_x25519_ge_p3_to_cached
+#define x25519_ge_scalarmult GRPC_SHADOW_x25519_ge_scalarmult
+#define x25519_ge_scalarmult_base GRPC_SHADOW_x25519_ge_scalarmult_base
+#define x25519_ge_scalarmult_small_precomp GRPC_SHADOW_x25519_ge_scalarmult_small_precomp
+#define x25519_ge_sub GRPC_SHADOW_x25519_ge_sub
+#define x25519_ge_tobytes GRPC_SHADOW_x25519_ge_tobytes
+#define X25519_keypair GRPC_SHADOW_X25519_keypair
+#define x25519_pkey_meth GRPC_SHADOW_x25519_pkey_meth
+#define X25519_public_from_private GRPC_SHADOW_X25519_public_from_private
+#define x25519_sc_reduce GRPC_SHADOW_x25519_sc_reduce
+#define X509_add1_ext_i2d GRPC_SHADOW_X509_add1_ext_i2d
+#define X509_add1_reject_object GRPC_SHADOW_X509_add1_reject_object
+#define X509_add1_trust_object GRPC_SHADOW_X509_add1_trust_object
+#define X509_add_ext GRPC_SHADOW_X509_add_ext
+#define X509_ALGOR_cmp GRPC_SHADOW_X509_ALGOR_cmp
+#define X509_ALGOR_dup GRPC_SHADOW_X509_ALGOR_dup
+#define X509_ALGOR_free GRPC_SHADOW_X509_ALGOR_free
+#define X509_ALGOR_get0 GRPC_SHADOW_X509_ALGOR_get0
+#define X509_ALGOR_it GRPC_SHADOW_X509_ALGOR_it
+#define X509_ALGOR_new GRPC_SHADOW_X509_ALGOR_new
+#define X509_ALGOR_set0 GRPC_SHADOW_X509_ALGOR_set0
+#define X509_ALGOR_set_md GRPC_SHADOW_X509_ALGOR_set_md
+#define X509_ALGORS_it GRPC_SHADOW_X509_ALGORS_it
+#define X509_alias_get0 GRPC_SHADOW_X509_alias_get0
+#define X509_alias_set1 GRPC_SHADOW_X509_alias_set1
+#define X509at_add1_attr GRPC_SHADOW_X509at_add1_attr
+#define X509at_add1_attr_by_NID GRPC_SHADOW_X509at_add1_attr_by_NID
+#define X509at_add1_attr_by_OBJ GRPC_SHADOW_X509at_add1_attr_by_OBJ
+#define X509at_add1_attr_by_txt GRPC_SHADOW_X509at_add1_attr_by_txt
+#define X509at_delete_attr GRPC_SHADOW_X509at_delete_attr
+#define X509at_get0_data_by_OBJ GRPC_SHADOW_X509at_get0_data_by_OBJ
+#define X509at_get_attr GRPC_SHADOW_X509at_get_attr
+#define X509at_get_attr_by_NID GRPC_SHADOW_X509at_get_attr_by_NID
+#define X509at_get_attr_by_OBJ GRPC_SHADOW_X509at_get_attr_by_OBJ
+#define X509at_get_attr_count GRPC_SHADOW_X509at_get_attr_count
+#define X509_ATTRIBUTE_count GRPC_SHADOW_X509_ATTRIBUTE_count
+#define X509_ATTRIBUTE_create GRPC_SHADOW_X509_ATTRIBUTE_create
+#define X509_ATTRIBUTE_create_by_NID GRPC_SHADOW_X509_ATTRIBUTE_create_by_NID
+#define X509_ATTRIBUTE_create_by_OBJ GRPC_SHADOW_X509_ATTRIBUTE_create_by_OBJ
+#define X509_ATTRIBUTE_create_by_txt GRPC_SHADOW_X509_ATTRIBUTE_create_by_txt
+#define X509_ATTRIBUTE_dup GRPC_SHADOW_X509_ATTRIBUTE_dup
+#define X509_ATTRIBUTE_free GRPC_SHADOW_X509_ATTRIBUTE_free
+#define X509_ATTRIBUTE_get0_data GRPC_SHADOW_X509_ATTRIBUTE_get0_data
+#define X509_ATTRIBUTE_get0_object GRPC_SHADOW_X509_ATTRIBUTE_get0_object
+#define X509_ATTRIBUTE_get0_type GRPC_SHADOW_X509_ATTRIBUTE_get0_type
+#define X509_ATTRIBUTE_it GRPC_SHADOW_X509_ATTRIBUTE_it
+#define X509_ATTRIBUTE_new GRPC_SHADOW_X509_ATTRIBUTE_new
+#define X509_ATTRIBUTE_set1_data GRPC_SHADOW_X509_ATTRIBUTE_set1_data
+#define X509_ATTRIBUTE_set1_object GRPC_SHADOW_X509_ATTRIBUTE_set1_object
+#define X509_ATTRIBUTE_SET_it GRPC_SHADOW_X509_ATTRIBUTE_SET_it
+#define X509_CERT_AUX_free GRPC_SHADOW_X509_CERT_AUX_free
+#define X509_CERT_AUX_it GRPC_SHADOW_X509_CERT_AUX_it
+#define X509_CERT_AUX_new GRPC_SHADOW_X509_CERT_AUX_new
+#define X509_CERT_AUX_print GRPC_SHADOW_X509_CERT_AUX_print
+#define X509_chain_check_suiteb GRPC_SHADOW_X509_chain_check_suiteb
+#define X509_chain_up_ref GRPC_SHADOW_X509_chain_up_ref
+#define X509_check_akid GRPC_SHADOW_X509_check_akid
+#define X509_check_ca GRPC_SHADOW_X509_check_ca
+#define X509_check_email GRPC_SHADOW_X509_check_email
+#define X509_check_host GRPC_SHADOW_X509_check_host
+#define X509_check_ip GRPC_SHADOW_X509_check_ip
+#define X509_check_ip_asc GRPC_SHADOW_X509_check_ip_asc
+#define X509_check_issued GRPC_SHADOW_X509_check_issued
+#define X509_check_private_key GRPC_SHADOW_X509_check_private_key
+#define X509_check_purpose GRPC_SHADOW_X509_check_purpose
+#define X509_check_trust GRPC_SHADOW_X509_check_trust
+#define X509_CINF_free GRPC_SHADOW_X509_CINF_free
+#define X509_CINF_it GRPC_SHADOW_X509_CINF_it
+#define X509_CINF_new GRPC_SHADOW_X509_CINF_new
+#define X509_cmp GRPC_SHADOW_X509_cmp
+#define X509_cmp_current_time GRPC_SHADOW_X509_cmp_current_time
+#define X509_cmp_time GRPC_SHADOW_X509_cmp_time
+#define X509_CRL_add0_revoked GRPC_SHADOW_X509_CRL_add0_revoked
+#define X509_CRL_add1_ext_i2d GRPC_SHADOW_X509_CRL_add1_ext_i2d
+#define X509_CRL_add_ext GRPC_SHADOW_X509_CRL_add_ext
+#define X509_CRL_check_suiteb GRPC_SHADOW_X509_CRL_check_suiteb
+#define X509_CRL_cmp GRPC_SHADOW_X509_CRL_cmp
+#define X509_CRL_delete_ext GRPC_SHADOW_X509_CRL_delete_ext
+#define X509_CRL_diff GRPC_SHADOW_X509_CRL_diff
+#define X509_CRL_digest GRPC_SHADOW_X509_CRL_digest
+#define X509_CRL_dup GRPC_SHADOW_X509_CRL_dup
+#define X509_CRL_free GRPC_SHADOW_X509_CRL_free
+#define X509_CRL_get0_by_cert GRPC_SHADOW_X509_CRL_get0_by_cert
+#define X509_CRL_get0_by_serial GRPC_SHADOW_X509_CRL_get0_by_serial
+#define X509_CRL_get0_lastUpdate GRPC_SHADOW_X509_CRL_get0_lastUpdate
+#define X509_CRL_get0_nextUpdate GRPC_SHADOW_X509_CRL_get0_nextUpdate
+#define X509_CRL_get0_signature GRPC_SHADOW_X509_CRL_get0_signature
+#define X509_CRL_get_ext GRPC_SHADOW_X509_CRL_get_ext
+#define X509_CRL_get_ext_by_critical GRPC_SHADOW_X509_CRL_get_ext_by_critical
+#define X509_CRL_get_ext_by_NID GRPC_SHADOW_X509_CRL_get_ext_by_NID
+#define X509_CRL_get_ext_by_OBJ GRPC_SHADOW_X509_CRL_get_ext_by_OBJ
+#define X509_CRL_get_ext_count GRPC_SHADOW_X509_CRL_get_ext_count
+#define X509_CRL_get_ext_d2i GRPC_SHADOW_X509_CRL_get_ext_d2i
+#define X509_CRL_get_meth_data GRPC_SHADOW_X509_CRL_get_meth_data
+#define X509_CRL_get_signature_nid GRPC_SHADOW_X509_CRL_get_signature_nid
+#define X509_CRL_INFO_free GRPC_SHADOW_X509_CRL_INFO_free
+#define X509_CRL_INFO_it GRPC_SHADOW_X509_CRL_INFO_it
+#define X509_CRL_INFO_new GRPC_SHADOW_X509_CRL_INFO_new
+#define X509_CRL_it GRPC_SHADOW_X509_CRL_it
+#define X509_CRL_match GRPC_SHADOW_X509_CRL_match
+#define X509_CRL_METHOD_free GRPC_SHADOW_X509_CRL_METHOD_free
+#define X509_CRL_METHOD_new GRPC_SHADOW_X509_CRL_METHOD_new
+#define X509_CRL_new GRPC_SHADOW_X509_CRL_new
+#define X509_CRL_print GRPC_SHADOW_X509_CRL_print
+#define X509_CRL_print_fp GRPC_SHADOW_X509_CRL_print_fp
+#define X509_CRL_set_default_method GRPC_SHADOW_X509_CRL_set_default_method
+#define X509_CRL_set_issuer_name GRPC_SHADOW_X509_CRL_set_issuer_name
+#define X509_CRL_set_lastUpdate GRPC_SHADOW_X509_CRL_set_lastUpdate
+#define X509_CRL_set_meth_data GRPC_SHADOW_X509_CRL_set_meth_data
+#define X509_CRL_set_nextUpdate GRPC_SHADOW_X509_CRL_set_nextUpdate
+#define X509_CRL_set_version GRPC_SHADOW_X509_CRL_set_version
+#define X509_CRL_sign GRPC_SHADOW_X509_CRL_sign
+#define X509_CRL_sign_ctx GRPC_SHADOW_X509_CRL_sign_ctx
+#define X509_CRL_sort GRPC_SHADOW_X509_CRL_sort
+#define X509_CRL_up_ref GRPC_SHADOW_X509_CRL_up_ref
+#define X509_CRL_verify GRPC_SHADOW_X509_CRL_verify
+#define X509_delete_ext GRPC_SHADOW_X509_delete_ext
+#define X509_digest GRPC_SHADOW_X509_digest
+#define x509_digest_sign_algorithm GRPC_SHADOW_x509_digest_sign_algorithm
+#define x509_digest_verify_init GRPC_SHADOW_x509_digest_verify_init
+#define X509_dup GRPC_SHADOW_X509_dup
+#define X509_email_free GRPC_SHADOW_X509_email_free
+#define X509_EXTENSION_create_by_NID GRPC_SHADOW_X509_EXTENSION_create_by_NID
+#define X509_EXTENSION_create_by_OBJ GRPC_SHADOW_X509_EXTENSION_create_by_OBJ
+#define X509_EXTENSION_dup GRPC_SHADOW_X509_EXTENSION_dup
+#define X509_EXTENSION_free GRPC_SHADOW_X509_EXTENSION_free
+#define X509_EXTENSION_get_critical GRPC_SHADOW_X509_EXTENSION_get_critical
+#define X509_EXTENSION_get_data GRPC_SHADOW_X509_EXTENSION_get_data
+#define X509_EXTENSION_get_object GRPC_SHADOW_X509_EXTENSION_get_object
+#define X509_EXTENSION_it GRPC_SHADOW_X509_EXTENSION_it
+#define X509_EXTENSION_new GRPC_SHADOW_X509_EXTENSION_new
+#define X509_EXTENSION_set_critical GRPC_SHADOW_X509_EXTENSION_set_critical
+#define X509_EXTENSION_set_data GRPC_SHADOW_X509_EXTENSION_set_data
+#define X509_EXTENSION_set_object GRPC_SHADOW_X509_EXTENSION_set_object
+#define X509_EXTENSIONS_it GRPC_SHADOW_X509_EXTENSIONS_it
+#define X509_find_by_issuer_and_serial GRPC_SHADOW_X509_find_by_issuer_and_serial
+#define X509_find_by_subject GRPC_SHADOW_X509_find_by_subject
+#define X509_free GRPC_SHADOW_X509_free
+#define X509_get0_extensions GRPC_SHADOW_X509_get0_extensions
+#define X509_get0_notAfter GRPC_SHADOW_X509_get0_notAfter
+#define X509_get0_notBefore GRPC_SHADOW_X509_get0_notBefore
+#define X509_get0_pubkey_bitstr GRPC_SHADOW_X509_get0_pubkey_bitstr
+#define X509_get0_signature GRPC_SHADOW_X509_get0_signature
+#define X509_get0_tbs_sigalg GRPC_SHADOW_X509_get0_tbs_sigalg
+#define X509_get1_email GRPC_SHADOW_X509_get1_email
+#define X509_get1_ocsp GRPC_SHADOW_X509_get1_ocsp
+#define X509_get_default_cert_area GRPC_SHADOW_X509_get_default_cert_area
+#define X509_get_default_cert_dir GRPC_SHADOW_X509_get_default_cert_dir
+#define X509_get_default_cert_dir_env GRPC_SHADOW_X509_get_default_cert_dir_env
+#define X509_get_default_cert_file GRPC_SHADOW_X509_get_default_cert_file
+#define X509_get_default_cert_file_env GRPC_SHADOW_X509_get_default_cert_file_env
+#define X509_get_default_private_dir GRPC_SHADOW_X509_get_default_private_dir
+#define X509_get_ex_data GRPC_SHADOW_X509_get_ex_data
+#define X509_get_ex_new_index GRPC_SHADOW_X509_get_ex_new_index
+#define X509_get_ext GRPC_SHADOW_X509_get_ext
+#define X509_get_ext_by_critical GRPC_SHADOW_X509_get_ext_by_critical
+#define X509_get_ext_by_NID GRPC_SHADOW_X509_get_ext_by_NID
+#define X509_get_ext_by_OBJ GRPC_SHADOW_X509_get_ext_by_OBJ
+#define X509_get_ext_count GRPC_SHADOW_X509_get_ext_count
+#define X509_get_ext_d2i GRPC_SHADOW_X509_get_ext_d2i
+#define X509_get_extended_key_usage GRPC_SHADOW_X509_get_extended_key_usage
+#define X509_get_extension_flags GRPC_SHADOW_X509_get_extension_flags
+#define X509_get_issuer_name GRPC_SHADOW_X509_get_issuer_name
+#define X509_get_key_usage GRPC_SHADOW_X509_get_key_usage
+#define X509_get_pubkey GRPC_SHADOW_X509_get_pubkey
+#define X509_get_serialNumber GRPC_SHADOW_X509_get_serialNumber
+#define X509_get_signature_nid GRPC_SHADOW_X509_get_signature_nid
+#define X509_get_subject_name GRPC_SHADOW_X509_get_subject_name
+#define X509_gmtime_adj GRPC_SHADOW_X509_gmtime_adj
+#define X509_INFO_free GRPC_SHADOW_X509_INFO_free
+#define X509_INFO_new GRPC_SHADOW_X509_INFO_new
+#define X509_issuer_and_serial_cmp GRPC_SHADOW_X509_issuer_and_serial_cmp
+#define X509_issuer_and_serial_hash GRPC_SHADOW_X509_issuer_and_serial_hash
+#define X509_issuer_name_cmp GRPC_SHADOW_X509_issuer_name_cmp
+#define X509_issuer_name_hash GRPC_SHADOW_X509_issuer_name_hash
+#define X509_issuer_name_hash_old GRPC_SHADOW_X509_issuer_name_hash_old
+#define X509_it GRPC_SHADOW_X509_it
+#define X509_keyid_get0 GRPC_SHADOW_X509_keyid_get0
+#define X509_keyid_set1 GRPC_SHADOW_X509_keyid_set1
+#define X509_load_cert_crl_file GRPC_SHADOW_X509_load_cert_crl_file
+#define X509_load_cert_file GRPC_SHADOW_X509_load_cert_file
+#define X509_load_crl_file GRPC_SHADOW_X509_load_crl_file
+#define X509_LOOKUP_by_alias GRPC_SHADOW_X509_LOOKUP_by_alias
+#define X509_LOOKUP_by_fingerprint GRPC_SHADOW_X509_LOOKUP_by_fingerprint
+#define X509_LOOKUP_by_issuer_serial GRPC_SHADOW_X509_LOOKUP_by_issuer_serial
+#define X509_LOOKUP_by_subject GRPC_SHADOW_X509_LOOKUP_by_subject
+#define X509_LOOKUP_ctrl GRPC_SHADOW_X509_LOOKUP_ctrl
+#define X509_LOOKUP_file GRPC_SHADOW_X509_LOOKUP_file
+#define X509_LOOKUP_free GRPC_SHADOW_X509_LOOKUP_free
+#define X509_LOOKUP_hash_dir GRPC_SHADOW_X509_LOOKUP_hash_dir
+#define X509_LOOKUP_init GRPC_SHADOW_X509_LOOKUP_init
+#define X509_LOOKUP_new GRPC_SHADOW_X509_LOOKUP_new
+#define X509_LOOKUP_shutdown GRPC_SHADOW_X509_LOOKUP_shutdown
+#define X509_NAME_add_entry GRPC_SHADOW_X509_NAME_add_entry
+#define X509_NAME_add_entry_by_NID GRPC_SHADOW_X509_NAME_add_entry_by_NID
+#define X509_NAME_add_entry_by_OBJ GRPC_SHADOW_X509_NAME_add_entry_by_OBJ
+#define X509_NAME_add_entry_by_txt GRPC_SHADOW_X509_NAME_add_entry_by_txt
+#define X509_NAME_cmp GRPC_SHADOW_X509_NAME_cmp
+#define X509_NAME_delete_entry GRPC_SHADOW_X509_NAME_delete_entry
+#define X509_NAME_digest GRPC_SHADOW_X509_NAME_digest
+#define X509_NAME_dup GRPC_SHADOW_X509_NAME_dup
+#define X509_NAME_ENTRIES_it GRPC_SHADOW_X509_NAME_ENTRIES_it
+#define X509_NAME_entry_count GRPC_SHADOW_X509_NAME_entry_count
+#define X509_NAME_ENTRY_create_by_NID GRPC_SHADOW_X509_NAME_ENTRY_create_by_NID
+#define X509_NAME_ENTRY_create_by_OBJ GRPC_SHADOW_X509_NAME_ENTRY_create_by_OBJ
+#define X509_NAME_ENTRY_create_by_txt GRPC_SHADOW_X509_NAME_ENTRY_create_by_txt
+#define X509_NAME_ENTRY_dup GRPC_SHADOW_X509_NAME_ENTRY_dup
+#define X509_NAME_ENTRY_free GRPC_SHADOW_X509_NAME_ENTRY_free
+#define X509_NAME_ENTRY_get_data GRPC_SHADOW_X509_NAME_ENTRY_get_data
+#define X509_NAME_ENTRY_get_object GRPC_SHADOW_X509_NAME_ENTRY_get_object
+#define X509_NAME_ENTRY_it GRPC_SHADOW_X509_NAME_ENTRY_it
+#define X509_NAME_ENTRY_new GRPC_SHADOW_X509_NAME_ENTRY_new
+#define X509_NAME_ENTRY_set GRPC_SHADOW_X509_NAME_ENTRY_set
+#define X509_NAME_ENTRY_set_data GRPC_SHADOW_X509_NAME_ENTRY_set_data
+#define X509_NAME_ENTRY_set_object GRPC_SHADOW_X509_NAME_ENTRY_set_object
+#define X509_NAME_free GRPC_SHADOW_X509_NAME_free
+#define X509_NAME_get0_der GRPC_SHADOW_X509_NAME_get0_der
+#define X509_NAME_get_entry GRPC_SHADOW_X509_NAME_get_entry
+#define X509_NAME_get_index_by_NID GRPC_SHADOW_X509_NAME_get_index_by_NID
+#define X509_NAME_get_index_by_OBJ GRPC_SHADOW_X509_NAME_get_index_by_OBJ
+#define X509_NAME_get_text_by_NID GRPC_SHADOW_X509_NAME_get_text_by_NID
+#define X509_NAME_get_text_by_OBJ GRPC_SHADOW_X509_NAME_get_text_by_OBJ
+#define X509_NAME_hash GRPC_SHADOW_X509_NAME_hash
+#define X509_NAME_hash_old GRPC_SHADOW_X509_NAME_hash_old
+#define X509_NAME_INTERNAL_it GRPC_SHADOW_X509_NAME_INTERNAL_it
+#define X509_NAME_it GRPC_SHADOW_X509_NAME_it
+#define X509_NAME_new GRPC_SHADOW_X509_NAME_new
+#define X509_NAME_oneline GRPC_SHADOW_X509_NAME_oneline
+#define X509_NAME_print GRPC_SHADOW_X509_NAME_print
+#define X509_NAME_print_ex GRPC_SHADOW_X509_NAME_print_ex
+#define X509_NAME_print_ex_fp GRPC_SHADOW_X509_NAME_print_ex_fp
+#define X509_NAME_set GRPC_SHADOW_X509_NAME_set
+#define X509_new GRPC_SHADOW_X509_new
+#define X509_OBJECT_free_contents GRPC_SHADOW_X509_OBJECT_free_contents
+#define X509_OBJECT_get0_X509 GRPC_SHADOW_X509_OBJECT_get0_X509
+#define X509_OBJECT_get_type GRPC_SHADOW_X509_OBJECT_get_type
+#define X509_OBJECT_idx_by_subject GRPC_SHADOW_X509_OBJECT_idx_by_subject
+#define X509_OBJECT_retrieve_by_subject GRPC_SHADOW_X509_OBJECT_retrieve_by_subject
+#define X509_OBJECT_retrieve_match GRPC_SHADOW_X509_OBJECT_retrieve_match
+#define X509_OBJECT_up_ref_count GRPC_SHADOW_X509_OBJECT_up_ref_count
+#define X509_ocspid_print GRPC_SHADOW_X509_ocspid_print
+#define X509_parse_from_buffer GRPC_SHADOW_X509_parse_from_buffer
+#define X509_PKEY_free GRPC_SHADOW_X509_PKEY_free
+#define X509_PKEY_new GRPC_SHADOW_X509_PKEY_new
+#define X509_policy_check GRPC_SHADOW_X509_policy_check
+#define X509_policy_level_get0_node GRPC_SHADOW_X509_policy_level_get0_node
+#define X509_policy_level_node_count GRPC_SHADOW_X509_policy_level_node_count
+#define X509_policy_node_get0_parent GRPC_SHADOW_X509_policy_node_get0_parent
+#define X509_policy_node_get0_policy GRPC_SHADOW_X509_policy_node_get0_policy
+#define X509_policy_node_get0_qualifiers GRPC_SHADOW_X509_policy_node_get0_qualifiers
+#define X509_POLICY_NODE_print GRPC_SHADOW_X509_POLICY_NODE_print
+#define X509_policy_tree_free GRPC_SHADOW_X509_policy_tree_free
+#define X509_policy_tree_get0_level GRPC_SHADOW_X509_policy_tree_get0_level
+#define X509_policy_tree_get0_policies GRPC_SHADOW_X509_policy_tree_get0_policies
+#define X509_policy_tree_get0_user_policies GRPC_SHADOW_X509_policy_tree_get0_user_policies
+#define X509_policy_tree_level_count GRPC_SHADOW_X509_policy_tree_level_count
+#define X509_print GRPC_SHADOW_X509_print
+#define X509_print_ex GRPC_SHADOW_X509_print_ex
+#define X509_print_ex_fp GRPC_SHADOW_X509_print_ex_fp
+#define X509_print_fp GRPC_SHADOW_X509_print_fp
+#define x509_print_rsa_pss_params GRPC_SHADOW_x509_print_rsa_pss_params
+#define X509_pubkey_digest GRPC_SHADOW_X509_pubkey_digest
+#define X509_PUBKEY_free GRPC_SHADOW_X509_PUBKEY_free
+#define X509_PUBKEY_get GRPC_SHADOW_X509_PUBKEY_get
+#define X509_PUBKEY_get0_param GRPC_SHADOW_X509_PUBKEY_get0_param
+#define X509_PUBKEY_it GRPC_SHADOW_X509_PUBKEY_it
+#define X509_PUBKEY_new GRPC_SHADOW_X509_PUBKEY_new
+#define X509_PUBKEY_set GRPC_SHADOW_X509_PUBKEY_set
+#define X509_PUBKEY_set0_param GRPC_SHADOW_X509_PUBKEY_set0_param
+#define X509_PURPOSE_add GRPC_SHADOW_X509_PURPOSE_add
+#define X509_PURPOSE_cleanup GRPC_SHADOW_X509_PURPOSE_cleanup
+#define X509_PURPOSE_get0 GRPC_SHADOW_X509_PURPOSE_get0
+#define X509_PURPOSE_get0_name GRPC_SHADOW_X509_PURPOSE_get0_name
+#define X509_PURPOSE_get0_sname GRPC_SHADOW_X509_PURPOSE_get0_sname
+#define X509_PURPOSE_get_by_id GRPC_SHADOW_X509_PURPOSE_get_by_id
+#define X509_PURPOSE_get_by_sname GRPC_SHADOW_X509_PURPOSE_get_by_sname
+#define X509_PURPOSE_get_count GRPC_SHADOW_X509_PURPOSE_get_count
+#define X509_PURPOSE_get_id GRPC_SHADOW_X509_PURPOSE_get_id
+#define X509_PURPOSE_get_trust GRPC_SHADOW_X509_PURPOSE_get_trust
+#define X509_PURPOSE_set GRPC_SHADOW_X509_PURPOSE_set
+#define X509_reject_clear GRPC_SHADOW_X509_reject_clear
+#define X509_REQ_add1_attr GRPC_SHADOW_X509_REQ_add1_attr
+#define X509_REQ_add1_attr_by_NID GRPC_SHADOW_X509_REQ_add1_attr_by_NID
+#define X509_REQ_add1_attr_by_OBJ GRPC_SHADOW_X509_REQ_add1_attr_by_OBJ
+#define X509_REQ_add1_attr_by_txt GRPC_SHADOW_X509_REQ_add1_attr_by_txt
+#define X509_REQ_add_extensions GRPC_SHADOW_X509_REQ_add_extensions
+#define X509_REQ_add_extensions_nid GRPC_SHADOW_X509_REQ_add_extensions_nid
+#define X509_REQ_check_private_key GRPC_SHADOW_X509_REQ_check_private_key
+#define X509_REQ_delete_attr GRPC_SHADOW_X509_REQ_delete_attr
+#define X509_REQ_digest GRPC_SHADOW_X509_REQ_digest
+#define X509_REQ_dup GRPC_SHADOW_X509_REQ_dup
+#define X509_REQ_extension_nid GRPC_SHADOW_X509_REQ_extension_nid
+#define X509_REQ_free GRPC_SHADOW_X509_REQ_free
+#define X509_REQ_get0_signature GRPC_SHADOW_X509_REQ_get0_signature
+#define X509_REQ_get1_email GRPC_SHADOW_X509_REQ_get1_email
+#define X509_REQ_get_attr GRPC_SHADOW_X509_REQ_get_attr
+#define X509_REQ_get_attr_by_NID GRPC_SHADOW_X509_REQ_get_attr_by_NID
+#define X509_REQ_get_attr_by_OBJ GRPC_SHADOW_X509_REQ_get_attr_by_OBJ
+#define X509_REQ_get_attr_count GRPC_SHADOW_X509_REQ_get_attr_count
+#define X509_REQ_get_extension_nids GRPC_SHADOW_X509_REQ_get_extension_nids
+#define X509_REQ_get_extensions GRPC_SHADOW_X509_REQ_get_extensions
+#define X509_REQ_get_pubkey GRPC_SHADOW_X509_REQ_get_pubkey
+#define X509_REQ_get_signature_nid GRPC_SHADOW_X509_REQ_get_signature_nid
+#define X509_REQ_INFO_free GRPC_SHADOW_X509_REQ_INFO_free
+#define X509_REQ_INFO_it GRPC_SHADOW_X509_REQ_INFO_it
+#define X509_REQ_INFO_new GRPC_SHADOW_X509_REQ_INFO_new
+#define X509_REQ_it GRPC_SHADOW_X509_REQ_it
+#define X509_REQ_new GRPC_SHADOW_X509_REQ_new
+#define X509_REQ_print GRPC_SHADOW_X509_REQ_print
+#define X509_REQ_print_ex GRPC_SHADOW_X509_REQ_print_ex
+#define X509_REQ_print_fp GRPC_SHADOW_X509_REQ_print_fp
+#define X509_REQ_set_extension_nids GRPC_SHADOW_X509_REQ_set_extension_nids
+#define X509_REQ_set_pubkey GRPC_SHADOW_X509_REQ_set_pubkey
+#define X509_REQ_set_subject_name GRPC_SHADOW_X509_REQ_set_subject_name
+#define X509_REQ_set_version GRPC_SHADOW_X509_REQ_set_version
+#define X509_REQ_sign GRPC_SHADOW_X509_REQ_sign
+#define X509_REQ_sign_ctx GRPC_SHADOW_X509_REQ_sign_ctx
+#define X509_REQ_to_X509 GRPC_SHADOW_X509_REQ_to_X509
+#define X509_REQ_verify GRPC_SHADOW_X509_REQ_verify
+#define X509_REVOKED_add1_ext_i2d GRPC_SHADOW_X509_REVOKED_add1_ext_i2d
+#define X509_REVOKED_add_ext GRPC_SHADOW_X509_REVOKED_add_ext
+#define X509_REVOKED_delete_ext GRPC_SHADOW_X509_REVOKED_delete_ext
+#define X509_REVOKED_dup GRPC_SHADOW_X509_REVOKED_dup
+#define X509_REVOKED_free GRPC_SHADOW_X509_REVOKED_free
+#define X509_REVOKED_get0_revocationDate GRPC_SHADOW_X509_REVOKED_get0_revocationDate
+#define X509_REVOKED_get0_serialNumber GRPC_SHADOW_X509_REVOKED_get0_serialNumber
+#define X509_REVOKED_get_ext GRPC_SHADOW_X509_REVOKED_get_ext
+#define X509_REVOKED_get_ext_by_critical GRPC_SHADOW_X509_REVOKED_get_ext_by_critical
+#define X509_REVOKED_get_ext_by_NID GRPC_SHADOW_X509_REVOKED_get_ext_by_NID
+#define X509_REVOKED_get_ext_by_OBJ GRPC_SHADOW_X509_REVOKED_get_ext_by_OBJ
+#define X509_REVOKED_get_ext_count GRPC_SHADOW_X509_REVOKED_get_ext_count
+#define X509_REVOKED_get_ext_d2i GRPC_SHADOW_X509_REVOKED_get_ext_d2i
+#define X509_REVOKED_it GRPC_SHADOW_X509_REVOKED_it
+#define X509_REVOKED_new GRPC_SHADOW_X509_REVOKED_new
+#define X509_REVOKED_set_revocationDate GRPC_SHADOW_X509_REVOKED_set_revocationDate
+#define X509_REVOKED_set_serialNumber GRPC_SHADOW_X509_REVOKED_set_serialNumber
+#define x509_rsa_ctx_to_pss GRPC_SHADOW_x509_rsa_ctx_to_pss
+#define x509_rsa_pss_to_ctx GRPC_SHADOW_x509_rsa_pss_to_ctx
+#define X509_set_ex_data GRPC_SHADOW_X509_set_ex_data
+#define X509_set_issuer_name GRPC_SHADOW_X509_set_issuer_name
+#define X509_set_notAfter GRPC_SHADOW_X509_set_notAfter
+#define X509_set_notBefore GRPC_SHADOW_X509_set_notBefore
+#define X509_set_pubkey GRPC_SHADOW_X509_set_pubkey
+#define X509_set_serialNumber GRPC_SHADOW_X509_set_serialNumber
+#define X509_set_subject_name GRPC_SHADOW_X509_set_subject_name
+#define X509_set_version GRPC_SHADOW_X509_set_version
+#define X509_SIG_free GRPC_SHADOW_X509_SIG_free
+#define X509_SIG_it GRPC_SHADOW_X509_SIG_it
+#define X509_sign GRPC_SHADOW_X509_sign
+#define X509_signature_dump GRPC_SHADOW_X509_signature_dump
+#define X509_signature_print GRPC_SHADOW_X509_signature_print
+#define X509_sign_ctx GRPC_SHADOW_X509_sign_ctx
+#define X509_SIG_new GRPC_SHADOW_X509_SIG_new
+#define X509_STORE_add_cert GRPC_SHADOW_X509_STORE_add_cert
+#define X509_STORE_add_crl GRPC_SHADOW_X509_STORE_add_crl
+#define X509_STORE_add_lookup GRPC_SHADOW_X509_STORE_add_lookup
+#define X509_STORE_CTX_cleanup GRPC_SHADOW_X509_STORE_CTX_cleanup
+#define X509_STORE_CTX_free GRPC_SHADOW_X509_STORE_CTX_free
+#define X509_STORE_CTX_get0_cert GRPC_SHADOW_X509_STORE_CTX_get0_cert
+#define X509_STORE_CTX_get0_current_crl GRPC_SHADOW_X509_STORE_CTX_get0_current_crl
+#define X509_STORE_CTX_get0_current_issuer GRPC_SHADOW_X509_STORE_CTX_get0_current_issuer
+#define X509_STORE_CTX_get0_param GRPC_SHADOW_X509_STORE_CTX_get0_param
+#define X509_STORE_CTX_get0_parent_ctx GRPC_SHADOW_X509_STORE_CTX_get0_parent_ctx
+#define X509_STORE_CTX_get0_policy_tree GRPC_SHADOW_X509_STORE_CTX_get0_policy_tree
+#define X509_STORE_CTX_get0_store GRPC_SHADOW_X509_STORE_CTX_get0_store
+#define X509_STORE_CTX_get0_untrusted GRPC_SHADOW_X509_STORE_CTX_get0_untrusted
+#define X509_STORE_CTX_get1_chain GRPC_SHADOW_X509_STORE_CTX_get1_chain
+#define X509_STORE_CTX_get1_issuer GRPC_SHADOW_X509_STORE_CTX_get1_issuer
+#define X509_STORE_CTX_get_chain GRPC_SHADOW_X509_STORE_CTX_get_chain
+#define X509_STORE_CTX_get_current_cert GRPC_SHADOW_X509_STORE_CTX_get_current_cert
+#define X509_STORE_CTX_get_error GRPC_SHADOW_X509_STORE_CTX_get_error
+#define X509_STORE_CTX_get_error_depth GRPC_SHADOW_X509_STORE_CTX_get_error_depth
+#define X509_STORE_CTX_get_ex_data GRPC_SHADOW_X509_STORE_CTX_get_ex_data
+#define X509_STORE_CTX_get_ex_new_index GRPC_SHADOW_X509_STORE_CTX_get_ex_new_index
+#define X509_STORE_CTX_get_explicit_policy GRPC_SHADOW_X509_STORE_CTX_get_explicit_policy
+#define X509_STORE_CTX_init GRPC_SHADOW_X509_STORE_CTX_init
+#define X509_STORE_CTX_new GRPC_SHADOW_X509_STORE_CTX_new
+#define X509_STORE_CTX_purpose_inherit GRPC_SHADOW_X509_STORE_CTX_purpose_inherit
+#define X509_STORE_CTX_set0_crls GRPC_SHADOW_X509_STORE_CTX_set0_crls
+#define X509_STORE_CTX_set0_param GRPC_SHADOW_X509_STORE_CTX_set0_param
+#define X509_STORE_CTX_set_cert GRPC_SHADOW_X509_STORE_CTX_set_cert
+#define X509_STORE_CTX_set_chain GRPC_SHADOW_X509_STORE_CTX_set_chain
+#define X509_STORE_CTX_set_default GRPC_SHADOW_X509_STORE_CTX_set_default
+#define X509_STORE_CTX_set_depth GRPC_SHADOW_X509_STORE_CTX_set_depth
+#define X509_STORE_CTX_set_error GRPC_SHADOW_X509_STORE_CTX_set_error
+#define X509_STORE_CTX_set_ex_data GRPC_SHADOW_X509_STORE_CTX_set_ex_data
+#define X509_STORE_CTX_set_flags GRPC_SHADOW_X509_STORE_CTX_set_flags
+#define X509_STORE_CTX_set_purpose GRPC_SHADOW_X509_STORE_CTX_set_purpose
+#define X509_STORE_CTX_set_time GRPC_SHADOW_X509_STORE_CTX_set_time
+#define X509_STORE_CTX_set_trust GRPC_SHADOW_X509_STORE_CTX_set_trust
+#define X509_STORE_CTX_set_verify_cb GRPC_SHADOW_X509_STORE_CTX_set_verify_cb
+#define X509_STORE_CTX_trusted_stack GRPC_SHADOW_X509_STORE_CTX_trusted_stack
+#define X509_STORE_CTX_zero GRPC_SHADOW_X509_STORE_CTX_zero
+#define X509_STORE_free GRPC_SHADOW_X509_STORE_free
+#define X509_STORE_get0_objects GRPC_SHADOW_X509_STORE_get0_objects
+#define X509_STORE_get0_param GRPC_SHADOW_X509_STORE_get0_param
+#define X509_STORE_get1_certs GRPC_SHADOW_X509_STORE_get1_certs
+#define X509_STORE_get1_crls GRPC_SHADOW_X509_STORE_get1_crls
+#define X509_STORE_get_by_subject GRPC_SHADOW_X509_STORE_get_by_subject
+#define X509_STORE_get_cert_crl GRPC_SHADOW_X509_STORE_get_cert_crl
+#define X509_STORE_get_check_crl GRPC_SHADOW_X509_STORE_get_check_crl
+#define X509_STORE_get_check_issued GRPC_SHADOW_X509_STORE_get_check_issued
+#define X509_STORE_get_check_revocation GRPC_SHADOW_X509_STORE_get_check_revocation
+#define X509_STORE_get_cleanup GRPC_SHADOW_X509_STORE_get_cleanup
+#define X509_STORE_get_get_crl GRPC_SHADOW_X509_STORE_get_get_crl
+#define X509_STORE_get_get_issuer GRPC_SHADOW_X509_STORE_get_get_issuer
+#define X509_STORE_get_lookup_certs GRPC_SHADOW_X509_STORE_get_lookup_certs
+#define X509_STORE_get_lookup_crls GRPC_SHADOW_X509_STORE_get_lookup_crls
+#define X509_STORE_get_verify GRPC_SHADOW_X509_STORE_get_verify
+#define X509_STORE_get_verify_cb GRPC_SHADOW_X509_STORE_get_verify_cb
+#define X509_STORE_load_locations GRPC_SHADOW_X509_STORE_load_locations
+#define X509_STORE_new GRPC_SHADOW_X509_STORE_new
+#define X509_STORE_set0_additional_untrusted GRPC_SHADOW_X509_STORE_set0_additional_untrusted
+#define X509_STORE_set1_param GRPC_SHADOW_X509_STORE_set1_param
+#define X509_STORE_set_cert_crl GRPC_SHADOW_X509_STORE_set_cert_crl
+#define X509_STORE_set_check_crl GRPC_SHADOW_X509_STORE_set_check_crl
+#define X509_STORE_set_check_issued GRPC_SHADOW_X509_STORE_set_check_issued
+#define X509_STORE_set_check_revocation GRPC_SHADOW_X509_STORE_set_check_revocation
+#define X509_STORE_set_cleanup GRPC_SHADOW_X509_STORE_set_cleanup
+#define X509_STORE_set_default_paths GRPC_SHADOW_X509_STORE_set_default_paths
+#define X509_STORE_set_depth GRPC_SHADOW_X509_STORE_set_depth
+#define X509_STORE_set_flags GRPC_SHADOW_X509_STORE_set_flags
+#define X509_STORE_set_get_crl GRPC_SHADOW_X509_STORE_set_get_crl
+#define X509_STORE_set_get_issuer GRPC_SHADOW_X509_STORE_set_get_issuer
+#define X509_STORE_set_lookup_certs GRPC_SHADOW_X509_STORE_set_lookup_certs
+#define X509_STORE_set_lookup_crls GRPC_SHADOW_X509_STORE_set_lookup_crls
+#define X509_STORE_set_purpose GRPC_SHADOW_X509_STORE_set_purpose
+#define X509_STORE_set_trust GRPC_SHADOW_X509_STORE_set_trust
+#define X509_STORE_set_verify GRPC_SHADOW_X509_STORE_set_verify
+#define X509_STORE_set_verify_cb GRPC_SHADOW_X509_STORE_set_verify_cb
+#define X509_STORE_up_ref GRPC_SHADOW_X509_STORE_up_ref
+#define X509_subject_name_cmp GRPC_SHADOW_X509_subject_name_cmp
+#define X509_subject_name_hash GRPC_SHADOW_X509_subject_name_hash
+#define X509_subject_name_hash_old GRPC_SHADOW_X509_subject_name_hash_old
+#define X509_supported_extension GRPC_SHADOW_X509_supported_extension
+#define X509_time_adj GRPC_SHADOW_X509_time_adj
+#define X509_time_adj_ex GRPC_SHADOW_X509_time_adj_ex
+#define X509_to_X509_REQ GRPC_SHADOW_X509_to_X509_REQ
+#define X509_TRUST_add GRPC_SHADOW_X509_TRUST_add
+#define X509_TRUST_cleanup GRPC_SHADOW_X509_TRUST_cleanup
+#define X509_trust_clear GRPC_SHADOW_X509_trust_clear
+#define X509_TRUST_get0 GRPC_SHADOW_X509_TRUST_get0
+#define X509_TRUST_get0_name GRPC_SHADOW_X509_TRUST_get0_name
+#define X509_TRUST_get_by_id GRPC_SHADOW_X509_TRUST_get_by_id
+#define X509_TRUST_get_count GRPC_SHADOW_X509_TRUST_get_count
+#define X509_TRUST_get_flags GRPC_SHADOW_X509_TRUST_get_flags
+#define X509_TRUST_get_trust GRPC_SHADOW_X509_TRUST_get_trust
+#define X509_TRUST_set GRPC_SHADOW_X509_TRUST_set
+#define X509_TRUST_set_default GRPC_SHADOW_X509_TRUST_set_default
+#define X509_up_ref GRPC_SHADOW_X509_up_ref
+#define X509V3_add1_i2d GRPC_SHADOW_X509V3_add1_i2d
+#define X509v3_add_ext GRPC_SHADOW_X509v3_add_ext
+#define X509V3_add_standard_extensions GRPC_SHADOW_X509V3_add_standard_extensions
+#define X509V3_add_value GRPC_SHADOW_X509V3_add_value
+#define X509V3_add_value_bool GRPC_SHADOW_X509V3_add_value_bool
+#define X509V3_add_value_bool_nf GRPC_SHADOW_X509V3_add_value_bool_nf
+#define X509V3_add_value_int GRPC_SHADOW_X509V3_add_value_int
+#define X509V3_add_value_uchar GRPC_SHADOW_X509V3_add_value_uchar
+#define x509v3_bytes_to_hex GRPC_SHADOW_x509v3_bytes_to_hex
+#define X509V3_conf_free GRPC_SHADOW_X509V3_conf_free
+#define X509v3_delete_ext GRPC_SHADOW_X509v3_delete_ext
+#define X509V3_EXT_add GRPC_SHADOW_X509V3_EXT_add
+#define X509V3_EXT_add_alias GRPC_SHADOW_X509V3_EXT_add_alias
+#define X509V3_EXT_add_list GRPC_SHADOW_X509V3_EXT_add_list
+#define X509V3_EXT_add_nconf GRPC_SHADOW_X509V3_EXT_add_nconf
+#define X509V3_EXT_add_nconf_sk GRPC_SHADOW_X509V3_EXT_add_nconf_sk
+#define X509V3_EXT_cleanup GRPC_SHADOW_X509V3_EXT_cleanup
+#define X509V3_EXT_CRL_add_nconf GRPC_SHADOW_X509V3_EXT_CRL_add_nconf
+#define X509V3_EXT_d2i GRPC_SHADOW_X509V3_EXT_d2i
+#define X509V3_extensions_print GRPC_SHADOW_X509V3_extensions_print
+#define X509V3_EXT_free GRPC_SHADOW_X509V3_EXT_free
+#define X509V3_EXT_get GRPC_SHADOW_X509V3_EXT_get
+#define X509V3_EXT_get_nid GRPC_SHADOW_X509V3_EXT_get_nid
+#define X509V3_EXT_i2d GRPC_SHADOW_X509V3_EXT_i2d
+#define X509V3_EXT_nconf GRPC_SHADOW_X509V3_EXT_nconf
+#define X509V3_EXT_nconf_nid GRPC_SHADOW_X509V3_EXT_nconf_nid
+#define X509V3_EXT_print GRPC_SHADOW_X509V3_EXT_print
+#define X509V3_EXT_print_fp GRPC_SHADOW_X509V3_EXT_print_fp
+#define X509V3_EXT_REQ_add_nconf GRPC_SHADOW_X509V3_EXT_REQ_add_nconf
+#define X509V3_EXT_val_prn GRPC_SHADOW_X509V3_EXT_val_prn
+#define X509V3_get_d2i GRPC_SHADOW_X509V3_get_d2i
+#define X509v3_get_ext GRPC_SHADOW_X509v3_get_ext
+#define X509v3_get_ext_by_critical GRPC_SHADOW_X509v3_get_ext_by_critical
+#define X509v3_get_ext_by_NID GRPC_SHADOW_X509v3_get_ext_by_NID
+#define X509v3_get_ext_by_OBJ GRPC_SHADOW_X509v3_get_ext_by_OBJ
+#define X509v3_get_ext_count GRPC_SHADOW_X509v3_get_ext_count
+#define X509V3_get_section GRPC_SHADOW_X509V3_get_section
+#define X509V3_get_string GRPC_SHADOW_X509V3_get_string
+#define X509V3_get_value_bool GRPC_SHADOW_X509V3_get_value_bool
+#define X509V3_get_value_int GRPC_SHADOW_X509V3_get_value_int
+#define x509v3_hex_to_bytes GRPC_SHADOW_x509v3_hex_to_bytes
+#define x509v3_looks_like_dns_name GRPC_SHADOW_x509v3_looks_like_dns_name
+#define x509v3_name_cmp GRPC_SHADOW_x509v3_name_cmp
+#define X509V3_NAME_from_section GRPC_SHADOW_X509V3_NAME_from_section
+#define X509V3_parse_list GRPC_SHADOW_X509V3_parse_list
+#define X509V3_section_free GRPC_SHADOW_X509V3_section_free
+#define X509V3_set_ctx GRPC_SHADOW_X509V3_set_ctx
+#define X509V3_set_nconf GRPC_SHADOW_X509V3_set_nconf
+#define X509V3_string_free GRPC_SHADOW_X509V3_string_free
+#define X509_VAL_free GRPC_SHADOW_X509_VAL_free
+#define X509_VAL_it GRPC_SHADOW_X509_VAL_it
+#define X509_VAL_new GRPC_SHADOW_X509_VAL_new
+#define X509_verify GRPC_SHADOW_X509_verify
+#define X509_verify_cert GRPC_SHADOW_X509_verify_cert
+#define X509_verify_cert_error_string GRPC_SHADOW_X509_verify_cert_error_string
+#define X509_VERIFY_PARAM_add0_policy GRPC_SHADOW_X509_VERIFY_PARAM_add0_policy
+#define X509_VERIFY_PARAM_add0_table GRPC_SHADOW_X509_VERIFY_PARAM_add0_table
+#define X509_VERIFY_PARAM_add1_host GRPC_SHADOW_X509_VERIFY_PARAM_add1_host
+#define X509_VERIFY_PARAM_clear_flags GRPC_SHADOW_X509_VERIFY_PARAM_clear_flags
+#define X509_VERIFY_PARAM_free GRPC_SHADOW_X509_VERIFY_PARAM_free
+#define X509_VERIFY_PARAM_get0 GRPC_SHADOW_X509_VERIFY_PARAM_get0
+#define X509_VERIFY_PARAM_get0_name GRPC_SHADOW_X509_VERIFY_PARAM_get0_name
+#define X509_VERIFY_PARAM_get0_peername GRPC_SHADOW_X509_VERIFY_PARAM_get0_peername
+#define X509_VERIFY_PARAM_get_count GRPC_SHADOW_X509_VERIFY_PARAM_get_count
+#define X509_VERIFY_PARAM_get_depth GRPC_SHADOW_X509_VERIFY_PARAM_get_depth
+#define X509_VERIFY_PARAM_get_flags GRPC_SHADOW_X509_VERIFY_PARAM_get_flags
+#define X509_VERIFY_PARAM_inherit GRPC_SHADOW_X509_VERIFY_PARAM_inherit
+#define X509_VERIFY_PARAM_lookup GRPC_SHADOW_X509_VERIFY_PARAM_lookup
+#define X509_VERIFY_PARAM_new GRPC_SHADOW_X509_VERIFY_PARAM_new
+#define X509_VERIFY_PARAM_set1 GRPC_SHADOW_X509_VERIFY_PARAM_set1
+#define X509_VERIFY_PARAM_set1_email GRPC_SHADOW_X509_VERIFY_PARAM_set1_email
+#define X509_VERIFY_PARAM_set1_host GRPC_SHADOW_X509_VERIFY_PARAM_set1_host
+#define X509_VERIFY_PARAM_set1_ip GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip
+#define X509_VERIFY_PARAM_set1_ip_asc GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip_asc
+#define X509_VERIFY_PARAM_set1_name GRPC_SHADOW_X509_VERIFY_PARAM_set1_name
+#define X509_VERIFY_PARAM_set1_policies GRPC_SHADOW_X509_VERIFY_PARAM_set1_policies
+#define X509_VERIFY_PARAM_set_depth GRPC_SHADOW_X509_VERIFY_PARAM_set_depth
+#define X509_VERIFY_PARAM_set_flags GRPC_SHADOW_X509_VERIFY_PARAM_set_flags
+#define X509_VERIFY_PARAM_set_hostflags GRPC_SHADOW_X509_VERIFY_PARAM_set_hostflags
+#define X509_VERIFY_PARAM_set_purpose GRPC_SHADOW_X509_VERIFY_PARAM_set_purpose
+#define X509_VERIFY_PARAM_set_time GRPC_SHADOW_X509_VERIFY_PARAM_set_time
+#define X509_VERIFY_PARAM_set_trust GRPC_SHADOW_X509_VERIFY_PARAM_set_trust
+#define X509_VERIFY_PARAM_table_cleanup GRPC_SHADOW_X509_VERIFY_PARAM_table_cleanup
+
+#endif /* GRPC_SHADOW_BORINGSSL_SYMBOLS */
+
+#endif /* GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/local_transport_security.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/local_transport_security.h
new file mode 100644
index 0000000..17213ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/local_transport_security.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+#define TSI_LOCAL_NUM_OF_PEER_PROPERTIES 1
+#define TSI_LOCAL_PROCESS_ID_PEER_PROPERTY "process_id"
+
+/**
+ * Main struct for local TSI handshaker. All APIs in the header are
+ * thread-comptabile.
+ */
+typedef struct local_tsi_handshaker local_tsi_handshaker;
+
+/**
+ * This method creates a local TSI handshaker instance.
+ *
+ * - is_client: boolean value indicating if the handshaker is used at the client
+ *   (is_client = true) or server (is_client = false) side. The parameter is
+ *   added for future extension.
+ * - self: address of local TSI handshaker instance to be returned from the
+ *   method.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result local_tsi_handshaker_create(bool is_client, tsi_handshaker** self);
+
+#endif /* GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session.h
new file mode 100644
index 0000000..4cbe0d5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session.h	
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H
+#define GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+}
+
+#include "src/core/lib/gprpp/ref_counted.h"
+
+// The main purpose of code here is to provide means to cache SSL sessions
+// in a way that they can be shared between connections.
+//
+// SSL_SESSION stands for single instance of session and is not generally safe
+// to share between SSL contexts with different lifetimes. It happens because
+// not all SSL implementations guarantee immutability of SSL_SESSION object.
+// See SSL_SESSION documentation in BoringSSL and OpenSSL for more details.
+
+namespace tsi {
+
+struct SslSessionDeleter {
+  void operator()(SSL_SESSION* session) { SSL_SESSION_free(session); }
+};
+
+typedef std::unique_ptr<SSL_SESSION, SslSessionDeleter> SslSessionPtr;
+
+/// SslCachedSession is an immutable thread-safe storage for single session
+/// representation. It provides means to share SSL session data (e.g. TLS
+/// ticket) between encrypted connections regardless of SSL context lifetime.
+class SslCachedSession {
+ public:
+  // Not copyable nor movable.
+  SslCachedSession(const SslCachedSession&) = delete;
+  SslCachedSession& operator=(const SslCachedSession&) = delete;
+
+  /// Create single cached instance of \a session.
+  static std::unique_ptr<SslCachedSession> Create(SslSessionPtr session);
+
+  virtual ~SslCachedSession() = default;
+
+  /// Returns a copy of previously cached session.
+  virtual SslSessionPtr CopySession() const = 0;
+
+ protected:
+  SslCachedSession() = default;
+};
+
+}  // namespace tsi
+
+#endif /* GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session_cache.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session_cache.h
new file mode 100644
index 0000000..1235370
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl/session_cache/ssl_session_cache.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H
+#define GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+#include <grpc/support/sync.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+}
+
+#include "src/core/lib/avl/avl.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/tsi/ssl/session_cache/ssl_session.h"
+
+/// Cache for SSL sessions for sessions resumption.
+///
+/// Older sessions may be evicted from the cache using LRU policy if capacity
+/// limit is hit. All sessions are associated with some key, usually server
+/// name. Note that servers are required to share session ticket encryption keys
+/// in order for cache to be effective.
+///
+/// This class is thread safe.
+
+namespace tsi {
+
+class SslSessionLRUCache : public grpc_core::RefCounted<SslSessionLRUCache> {
+ public:
+  /// Create new LRU cache with the given capacity.
+  static grpc_core::RefCountedPtr<SslSessionLRUCache> Create(size_t capacity) {
+    return grpc_core::MakeRefCounted<SslSessionLRUCache>(capacity);
+  }
+
+  // Use Create function instead of using this directly.
+  explicit SslSessionLRUCache(size_t capacity);
+  ~SslSessionLRUCache();
+
+  // Not copyable nor movable.
+  SslSessionLRUCache(const SslSessionLRUCache&) = delete;
+  SslSessionLRUCache& operator=(const SslSessionLRUCache&) = delete;
+
+  /// Returns current number of sessions in the cache.
+  size_t Size();
+  /// Add \a session in the cache using \a key. This operation may discard older
+  /// sessions.
+  void Put(const char* key, SslSessionPtr session);
+  /// Returns the session from the cache associated with \a key or null if not
+  /// found.
+  SslSessionPtr Get(const char* key);
+
+ private:
+  class Node;
+
+  Node* FindLocked(const grpc_slice& key);
+  void Remove(Node* node);
+  void PushFront(Node* node);
+  void AssertInvariants();
+
+  gpr_mu lock_;
+  size_t capacity_;
+
+  Node* use_order_list_head_ = nullptr;
+  Node* use_order_list_tail_ = nullptr;
+  size_t use_order_list_size_ = 0;
+  grpc_avl entry_by_key_;
+};
+
+}  // namespace tsi
+
+#endif /* GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_transport_security.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_transport_security.h
new file mode 100644
index 0000000..d453308
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_transport_security.h	
@@ -0,0 +1,357 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/x509.h>
+#else
+  #include <openssl/x509.h>
+#endif
+}
+
+/* Value for the TSI_CERTIFICATE_TYPE_PEER_PROPERTY property for X509 certs. */
+#define TSI_X509_CERTIFICATE_TYPE "X509"
+
+/* This property is of type TSI_PEER_PROPERTY_STRING.  */
+#define TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY "x509_subject_common_name"
+#define TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY \
+  "x509_subject_alternative_name"
+#define TSI_SSL_SESSION_REUSED_PEER_PROPERTY "ssl_session_reused"
+
+#define TSI_X509_PEM_CERT_PROPERTY "x509_pem_cert"
+
+#define TSI_X509_PEM_CERT_CHAIN_PROPERTY "x509_pem_cert_chain"
+
+#define TSI_SSL_ALPN_SELECTED_PROTOCOL "ssl_alpn_selected_protocol"
+
+/* --- tsi_ssl_root_certs_store object ---
+
+   This object stores SSL root certificates. It can be shared by multiple SSL
+   context. */
+typedef struct tsi_ssl_root_certs_store tsi_ssl_root_certs_store;
+
+/* Given a NULL-terminated string containing the PEM encoding of the root
+   certificates, creates a tsi_ssl_root_certs_store object. */
+tsi_ssl_root_certs_store* tsi_ssl_root_certs_store_create(
+    const char* pem_roots);
+
+/* Destroys the tsi_ssl_root_certs_store object. */
+void tsi_ssl_root_certs_store_destroy(tsi_ssl_root_certs_store* self);
+
+/* --- tsi_ssl_session_cache object ---
+
+   Cache for SSL sessions for sessions resumption.  */
+
+typedef struct tsi_ssl_session_cache tsi_ssl_session_cache;
+
+/* Create LRU cache for SSL sessions with \a capacity.  */
+tsi_ssl_session_cache* tsi_ssl_session_cache_create_lru(size_t capacity);
+
+/* Increment reference counter of \a cache.  */
+void tsi_ssl_session_cache_ref(tsi_ssl_session_cache* cache);
+
+/* Decrement reference counter of \a cache.  */
+void tsi_ssl_session_cache_unref(tsi_ssl_session_cache* cache);
+
+/* --- tsi_ssl_client_handshaker_factory object ---
+
+   This object creates a client tsi_handshaker objects implemented in terms of
+   the TLS 1.2 specificiation.  */
+
+typedef struct tsi_ssl_client_handshaker_factory
+    tsi_ssl_client_handshaker_factory;
+
+/* Object that holds a private key / certificate chain pair in PEM format. */
+typedef struct {
+  /* private_key is the NULL-terminated string containing the PEM encoding of
+     the client's private key. */
+  const char* private_key;
+
+  /* cert_chain is the NULL-terminated string containing the PEM encoding of
+     the client's certificate chain. */
+  const char* cert_chain;
+} tsi_ssl_pem_key_cert_pair;
+
+/* TO BE DEPRECATED.
+   Creates a client handshaker factory.
+   - pem_key_cert_pair is a pointer to the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair.
+   - pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the server root certificates.
+   - cipher_suites contains an optional list of the ciphers that the client
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter.
+   - alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL.
+   - num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be NULL.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid.  */
+tsi_result tsi_create_ssl_client_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const char* pem_root_certs, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_client_handshaker_factory** factory);
+
+struct tsi_ssl_client_handshaker_options {
+  /* pem_key_cert_pair is a pointer to the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair. */
+  const tsi_ssl_pem_key_cert_pair* pem_key_cert_pair;
+  /* pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the client root certificates. */
+  const char* pem_root_certs;
+  /* root_store is a pointer to the ssl_root_certs_store object. If root_store
+    is not nullptr and SSL implementation permits, root_store will be used as
+    root certificates. Otherwise, pem_roots_cert will be used to load server
+    root certificates. */
+  const tsi_ssl_root_certs_store* root_store;
+  /* cipher_suites contains an optional list of the ciphers that the client
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter. */
+  const char* cipher_suites;
+  /* alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL. */
+  const char** alpn_protocols;
+  /* num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be
+     NULL. */
+  size_t num_alpn_protocols;
+  /* ssl_session_cache is a cache for reusable client-side sessions. */
+  tsi_ssl_session_cache* session_cache;
+
+  /* skip server certificate verification. */
+  bool skip_server_certificate_verification;
+
+  tsi_ssl_client_handshaker_options()
+      : pem_key_cert_pair(nullptr),
+        pem_root_certs(nullptr),
+        root_store(nullptr),
+        cipher_suites(nullptr),
+        alpn_protocols(nullptr),
+        num_alpn_protocols(0),
+        session_cache(nullptr),
+        skip_server_certificate_verification(false) {}
+};
+
+/* Creates a client handshaker factory.
+   - options is the options used to create a factory.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid. */
+tsi_result tsi_create_ssl_client_handshaker_factory_with_options(
+    const tsi_ssl_client_handshaker_options* options,
+    tsi_ssl_client_handshaker_factory** factory);
+
+/* Creates a client handshaker.
+  - self is the factory from which the handshaker will be created.
+  - server_name_indication indicates the name of the server the client is
+    trying to connect to which will be relayed to the server using the SNI
+    extension.
+  - handshaker is the address of the handshaker pointer to be created.
+
+  - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+    where a parameter is invalid.  */
+tsi_result tsi_ssl_client_handshaker_factory_create_handshaker(
+    tsi_ssl_client_handshaker_factory* self, const char* server_name_indication,
+    tsi_handshaker** handshaker);
+
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_client_handshaker_factory_unref(
+    tsi_ssl_client_handshaker_factory* factory);
+
+/* --- tsi_ssl_server_handshaker_factory object ---
+
+   This object creates a client tsi_handshaker objects implemented in terms of
+   the TLS 1.2 specificiation.  */
+
+typedef struct tsi_ssl_server_handshaker_factory
+    tsi_ssl_server_handshaker_factory;
+
+/* TO BE DEPRECATED.
+   Creates a server handshaker factory.
+   - pem_key_cert_pairs is an array private key / certificate chains of the
+     server.
+   - num_key_cert_pairs is the number of items in the pem_key_cert_pairs array.
+   - pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the client root certificates. This parameter may be NULL if the server
+     does not want the client to be authenticated with SSL.
+   - cipher_suites contains an optional list of the ciphers that the server
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter.
+   - alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL.
+   - num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be NULL.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid.  */
+tsi_result tsi_create_ssl_server_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    int force_client_auth, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_server_handshaker_factory** factory);
+
+/* TO BE DEPRECATED.
+   Same as tsi_create_ssl_server_handshaker_factory method except uses
+   tsi_client_certificate_request_type to support more ways to handle client
+   certificate authentication.
+   - client_certificate_request, if set to non-zero will force the client to
+     authenticate with an SSL cert. Note that this option is ignored if
+     pem_client_root_certs is NULL or pem_client_roots_certs_size is 0 */
+tsi_result tsi_create_ssl_server_handshaker_factory_ex(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    tsi_client_certificate_request_type client_certificate_request,
+    const char* cipher_suites, const char** alpn_protocols,
+    uint16_t num_alpn_protocols, tsi_ssl_server_handshaker_factory** factory);
+
+struct tsi_ssl_server_handshaker_options {
+  /* pem_key_cert_pairs is an array private key / certificate chains of the
+     server. */
+  const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs;
+  /* num_key_cert_pairs is the number of items in the pem_key_cert_pairs
+     array. */
+  size_t num_key_cert_pairs;
+  /* pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the server root certificates. This parameter may be NULL if the server
+     does not want the client to be authenticated with SSL. */
+  const char* pem_client_root_certs;
+  /* client_certificate_request, if set to non-zero will force the client to
+     authenticate with an SSL cert. Note that this option is ignored if
+     pem_client_root_certs is NULL or pem_client_roots_certs_size is 0. */
+  tsi_client_certificate_request_type client_certificate_request;
+  /* cipher_suites contains an optional list of the ciphers that the server
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter. */
+  const char* cipher_suites;
+  /* alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL. */
+  const char** alpn_protocols;
+  /* num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be
+     NULL. */
+  uint16_t num_alpn_protocols;
+  /* session_ticket_key is optional key for encrypting session keys. If
+     parameter is not specified it must be NULL. */
+  const char* session_ticket_key;
+  /* session_ticket_key_size is a size of session ticket encryption key. */
+  size_t session_ticket_key_size;
+
+  tsi_ssl_server_handshaker_options()
+      : pem_key_cert_pairs(nullptr),
+        num_key_cert_pairs(0),
+        pem_client_root_certs(nullptr),
+        client_certificate_request(TSI_DONT_REQUEST_CLIENT_CERTIFICATE),
+        cipher_suites(nullptr),
+        alpn_protocols(nullptr),
+        num_alpn_protocols(0),
+        session_ticket_key(nullptr),
+        session_ticket_key_size(0) {}
+};
+
+/* Creates a server handshaker factory.
+   - options is the options used to create a factory.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid. */
+tsi_result tsi_create_ssl_server_handshaker_factory_with_options(
+    const tsi_ssl_server_handshaker_options* options,
+    tsi_ssl_server_handshaker_factory** factory);
+
+/* Creates a server handshaker.
+  - self is the factory from which the handshaker will be created.
+  - handshaker is the address of the handshaker pointer to be created.
+
+  - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+    where a parameter is invalid.  */
+tsi_result tsi_ssl_server_handshaker_factory_create_handshaker(
+    tsi_ssl_server_handshaker_factory* self, tsi_handshaker** handshaker);
+
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_server_handshaker_factory_unref(
+    tsi_ssl_server_handshaker_factory* self);
+
+/* Util that checks that an ssl peer matches a specific name.
+   Still TODO(jboeuf):
+   - handle mixed case.
+   - handle %encoded chars.
+   - handle public suffix wildchar more strictly (e.g. *.co.uk) */
+int tsi_ssl_peer_matches_name(const tsi_peer* peer, grpc_core::StringView name);
+
+/* --- Testing support. ---
+
+   These functions and typedefs are not intended to be used outside of testing.
+   */
+
+/* Base type of client and server handshaker factories. */
+typedef struct tsi_ssl_handshaker_factory tsi_ssl_handshaker_factory;
+
+/* Function pointer to handshaker_factory destructor. */
+typedef void (*tsi_ssl_handshaker_factory_destructor)(
+    tsi_ssl_handshaker_factory* factory);
+
+/* Virtual table for tsi_ssl_handshaker_factory. */
+typedef struct {
+  tsi_ssl_handshaker_factory_destructor destroy;
+} tsi_ssl_handshaker_factory_vtable;
+
+/* Set destructor of handshaker_factory to new_destructor, returns previous
+   destructor. */
+const tsi_ssl_handshaker_factory_vtable* tsi_ssl_handshaker_factory_swap_vtable(
+    tsi_ssl_handshaker_factory* factory,
+    tsi_ssl_handshaker_factory_vtable* new_vtable);
+
+/* Exposed for testing only. */
+tsi_result tsi_ssl_extract_x509_subject_names_from_pem_cert(
+    const char* pem_cert, tsi_peer* peer);
+
+/* Exposed for testing only. */
+tsi_result tsi_ssl_get_cert_chain_contents(STACK_OF(X509) * peer_chain,
+                                           tsi_peer_property* property);
+
+#endif /* GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_types.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_types.h
new file mode 100644
index 0000000..b405b99
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/ssl_types.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_TYPES_H
+#define GRPC_CORE_TSI_SSL_TYPES_H
+
+/* A collection of macros to cast between various integer types that are
+ * used differently between BoringSSL and OpenSSL:
+ * TSI_INT_AS_SIZE(x):  convert 'int x' to a length parameter for an OpenSSL
+ *                      function
+ * TSI_SIZE_AS_SIZE(x): convert 'size_t x' to a length parameter for an OpenSSL
+ *                      function
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+
+#ifdef OPENSSL_IS_BORINGSSL
+#define TSI_INT_AS_SIZE(x) ((size_t)(x))
+#define TSI_SIZE_AS_SIZE(x) (x)
+#else
+#define TSI_INT_AS_SIZE(x) (x)
+#define TSI_SIZE_AS_SIZE(x) ((int)(x))
+#endif
+
+#endif /* GRPC_CORE_TSI_SSL_TYPES_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security.h
new file mode 100644
index 0000000..482d300
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security.h	
@@ -0,0 +1,130 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern grpc_core::TraceFlag tsi_tracing_enabled;
+
+/* Base for tsi_frame_protector implementations.
+   See transport_security_interface.h for documentation. */
+typedef struct {
+  tsi_result (*protect)(tsi_frame_protector* self,
+                        const unsigned char* unprotected_bytes,
+                        size_t* unprotected_bytes_size,
+                        unsigned char* protected_output_frames,
+                        size_t* protected_output_frames_size);
+  tsi_result (*protect_flush)(tsi_frame_protector* self,
+                              unsigned char* protected_output_frames,
+                              size_t* protected_output_frames_size,
+                              size_t* still_pending_size);
+  tsi_result (*unprotect)(tsi_frame_protector* self,
+                          const unsigned char* protected_frames_bytes,
+                          size_t* protected_frames_bytes_size,
+                          unsigned char* unprotected_bytes,
+                          size_t* unprotected_bytes_size);
+  void (*destroy)(tsi_frame_protector* self);
+} tsi_frame_protector_vtable;
+
+struct tsi_frame_protector {
+  const tsi_frame_protector_vtable* vtable;
+};
+
+/* Base for tsi_handshaker implementations.
+   See transport_security_interface.h for documentation. */
+typedef struct {
+  tsi_result (*get_bytes_to_send_to_peer)(tsi_handshaker* self,
+                                          unsigned char* bytes,
+                                          size_t* bytes_size);
+  tsi_result (*process_bytes_from_peer)(tsi_handshaker* self,
+                                        const unsigned char* bytes,
+                                        size_t* bytes_size);
+  tsi_result (*get_result)(tsi_handshaker* self);
+  tsi_result (*extract_peer)(tsi_handshaker* self, tsi_peer* peer);
+  tsi_result (*create_frame_protector)(tsi_handshaker* self,
+                                       size_t* max_protected_frame_size,
+                                       tsi_frame_protector** protector);
+  void (*destroy)(tsi_handshaker* self);
+  tsi_result (*next)(tsi_handshaker* self, const unsigned char* received_bytes,
+                     size_t received_bytes_size,
+                     const unsigned char** bytes_to_send,
+                     size_t* bytes_to_send_size,
+                     tsi_handshaker_result** handshaker_result,
+                     tsi_handshaker_on_next_done_cb cb, void* user_data);
+  void (*shutdown)(tsi_handshaker* self);
+} tsi_handshaker_vtable;
+
+struct tsi_handshaker {
+  const tsi_handshaker_vtable* vtable;
+  bool frame_protector_created;
+  bool handshaker_result_created;
+  bool handshake_shutdown;
+};
+
+/* Base for tsi_handshaker_result implementations.
+   See transport_security_interface.h for documentation.
+   The exec_ctx parameter in create_zero_copy_grpc_protector is supposed to be
+   of type grpc_exec_ctx*, but we're using void* instead to avoid making the TSI
+   API depend on grpc. The create_zero_copy_grpc_protector() method is only used
+   in grpc, where we do need the exec_ctx passed through, but the API still
+   needs to compile in other applications, where grpc_exec_ctx is not defined.
+*/
+typedef struct {
+  tsi_result (*extract_peer)(const tsi_handshaker_result* self, tsi_peer* peer);
+  tsi_result (*create_zero_copy_grpc_protector)(
+      const tsi_handshaker_result* self,
+      size_t* max_output_protected_frame_size,
+      tsi_zero_copy_grpc_protector** protector);
+  tsi_result (*create_frame_protector)(const tsi_handshaker_result* self,
+                                       size_t* max_output_protected_frame_size,
+                                       tsi_frame_protector** protector);
+  tsi_result (*get_unused_bytes)(const tsi_handshaker_result* self,
+                                 const unsigned char** bytes,
+                                 size_t* bytes_size);
+  void (*destroy)(tsi_handshaker_result* self);
+} tsi_handshaker_result_vtable;
+
+struct tsi_handshaker_result {
+  const tsi_handshaker_result_vtable* vtable;
+};
+
+/* Peer and property construction/destruction functions. */
+tsi_result tsi_construct_peer(size_t property_count, tsi_peer* peer);
+tsi_peer_property tsi_init_peer_property(void);
+void tsi_peer_property_destruct(tsi_peer_property* property);
+tsi_result tsi_construct_string_peer_property(const char* name,
+                                              const char* value,
+                                              size_t value_length,
+                                              tsi_peer_property* property);
+tsi_result tsi_construct_allocated_string_peer_property(
+    const char* name, size_t value_length, tsi_peer_property* property);
+tsi_result tsi_construct_string_peer_property_from_cstring(
+    const char* name, const char* value, tsi_peer_property* property);
+const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* peer,
+                                                       const char* name);
+/* Utils. */
+char* tsi_strdup(const char* src); /* Sadly, no strdup in C89. */
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_grpc.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_grpc.h
new file mode 100644
index 0000000..d33fa0b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_grpc.h	
@@ -0,0 +1,80 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/tsi/transport_security.h"
+
+/* This method creates a tsi_zero_copy_grpc_protector object. It return TSI_OK
+   assuming there is no fatal error.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector);
+
+/* -- tsi_zero_copy_grpc_protector object --  */
+
+/* Outputs protected frames.
+   - unprotected_slices is the unprotected data to be protected.
+   - protected_slices is the protected output frames. One or more frames
+     may be produced in this protect function.
+   - This method returns TSI_OK in case of success or a specific error code in
+     case of failure.  */
+tsi_result tsi_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices);
+
+/* Outputs unprotected bytes.
+   - protected_slices is the bytes of protected frames.
+   - unprotected_slices is the unprotected output data.
+   - This method returns TSI_OK in case of success. Success includes cases where
+     there is not enough data to output in which case unprotected_slices has 0
+     bytes.  */
+tsi_result tsi_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices);
+
+/* Destroys the tsi_zero_copy_grpc_protector object.  */
+void tsi_zero_copy_grpc_protector_destroy(tsi_zero_copy_grpc_protector* self);
+
+/* Returns value of max protected frame size. Useful for testing. */
+tsi_result tsi_zero_copy_grpc_protector_max_frame_size(
+    tsi_zero_copy_grpc_protector* self, size_t* max_frame_size);
+
+/* Base for tsi_zero_copy_grpc_protector implementations.  */
+typedef struct {
+  tsi_result (*protect)(tsi_zero_copy_grpc_protector* self,
+                        grpc_slice_buffer* unprotected_slices,
+                        grpc_slice_buffer* protected_slices);
+  tsi_result (*unprotect)(tsi_zero_copy_grpc_protector* self,
+                          grpc_slice_buffer* protected_slices,
+                          grpc_slice_buffer* unprotected_slices);
+  void (*destroy)(tsi_zero_copy_grpc_protector* self);
+  tsi_result (*max_frame_size)(tsi_zero_copy_grpc_protector* self,
+                               size_t* max_frame_size);
+} tsi_zero_copy_grpc_protector_vtable;
+
+struct tsi_zero_copy_grpc_protector {
+  const tsi_zero_copy_grpc_protector_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_interface.h b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_interface.h
new file mode 100644
index 0000000..8b4c929
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/core/tsi/transport_security_interface.h	
@@ -0,0 +1,476 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "src/core/lib/debug/trace.h"
+
+/* --- tsi result ---  */
+
+typedef enum {
+  TSI_OK = 0,
+  TSI_UNKNOWN_ERROR = 1,
+  TSI_INVALID_ARGUMENT = 2,
+  TSI_PERMISSION_DENIED = 3,
+  TSI_INCOMPLETE_DATA = 4,
+  TSI_FAILED_PRECONDITION = 5,
+  TSI_UNIMPLEMENTED = 6,
+  TSI_INTERNAL_ERROR = 7,
+  TSI_DATA_CORRUPTED = 8,
+  TSI_NOT_FOUND = 9,
+  TSI_PROTOCOL_FAILURE = 10,
+  TSI_HANDSHAKE_IN_PROGRESS = 11,
+  TSI_OUT_OF_RESOURCES = 12,
+  TSI_ASYNC = 13,
+  TSI_HANDSHAKE_SHUTDOWN = 14,
+} tsi_result;
+
+typedef enum {
+  TSI_SECURITY_MIN,
+  TSI_SECURITY_NONE = TSI_SECURITY_MIN,
+  TSI_INTEGRITY_ONLY,
+  TSI_PRIVACY_AND_INTEGRITY,
+  TSI_SECURITY_MAX = TSI_PRIVACY_AND_INTEGRITY,
+} tsi_security_level;
+
+typedef enum {
+  // Default option
+  TSI_DONT_REQUEST_CLIENT_CERTIFICATE,
+  TSI_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  TSI_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY,
+  TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY,
+} tsi_client_certificate_request_type;
+
+const char* tsi_result_to_string(tsi_result result);
+const char* tsi_security_level_to_string(tsi_security_level security_level);
+
+/* --- tsi tracing --- */
+
+extern grpc_core::TraceFlag tsi_tracing_enabled;
+
+/* -- tsi_zero_copy_grpc_protector object --
+
+  This object protects and unprotects grpc slice buffers with zero or minimized
+  memory copy once the handshake is done. Implementations of this object must be
+  thread compatible. This object depends on grpc and the details of this object
+  is defined in transport_security_grpc.h.  */
+
+typedef struct tsi_zero_copy_grpc_protector tsi_zero_copy_grpc_protector;
+
+/* --- tsi_frame_protector object ---
+
+  This object protects and unprotects buffers once the handshake is done.
+  Implementations of this object must be thread compatible.  */
+
+typedef struct tsi_frame_protector tsi_frame_protector;
+
+/* Outputs protected frames.
+   - unprotected_bytes is an input only parameter and points to the data
+     to be protected.
+   - unprotected_bytes_size is an input/output parameter used by the caller to
+     specify how many bytes are available in unprotected_bytes. The output
+     value is the number of bytes consumed during the call.
+   - protected_output_frames points to a buffer allocated by the caller that
+     will be written.
+   - protected_output_frames_size is an input/output parameter used by the
+     caller to specify how many bytes are available in protected_output_frames.
+     As an output, this value indicates the number of bytes written.
+   - This method returns TSI_OK in case of success or a specific error code in
+     case of failure. Note that even if all the input unprotected bytes are
+     consumed, they may not have been processed into the returned protected
+     output frames. The caller should call the protect_flush method
+     to make sure that there are no more protected bytes buffered in the
+     protector.
+
+   A typical way to call this method would be:
+
+   ------------------------------------------------------------------------
+   unsigned char protected_buffer[4096];
+   size_t protected_buffer_size = sizeof(protected_buffer);
+   tsi_result result = TSI_OK;
+   while (message_size > 0) {
+     size_t protected_buffer_size_to_send = protected_buffer_size;
+     size_t processed_message_size = message_size;
+     result = tsi_frame_protector_protect(protector,
+                                          message_bytes,
+                                          &processed_message_size,
+                                          protected_buffer,
+                                          &protected_buffer_size_to_send);
+     if (result != TSI_OK) break;
+     send_bytes_to_peer(protected_buffer, protected_buffer_size_to_send);
+     message_bytes += processed_message_size;
+     message_size -= processed_message_size;
+
+     // Don't forget to flush.
+     if (message_size == 0) {
+       size_t still_pending_size;
+       do {
+         protected_buffer_size_to_send = protected_buffer_size;
+         result = tsi_frame_protector_protect_flush(
+             protector, protected_buffer,
+             &protected_buffer_size_to_send, &still_pending_size);
+         if (result != TSI_OK) break;
+         send_bytes_to_peer(protected_buffer, protected_buffer_size_to_send);
+       } while (still_pending_size > 0);
+     }
+   }
+
+   if (result != TSI_OK) HandleError(result);
+   ------------------------------------------------------------------------  */
+tsi_result tsi_frame_protector_protect(tsi_frame_protector* self,
+                                       const unsigned char* unprotected_bytes,
+                                       size_t* unprotected_bytes_size,
+                                       unsigned char* protected_output_frames,
+                                       size_t* protected_output_frames_size);
+
+/* Indicates that we need to flush the bytes buffered in the protector and get
+   the resulting frame.
+   - protected_output_frames points to a buffer allocated by the caller that
+     will be written.
+   - protected_output_frames_size is an input/output parameter used by the
+     caller to specify how many bytes are available in protected_output_frames.
+   - still_pending_bytes is an output parameter indicating the number of bytes
+     that still need to be flushed from the protector.*/
+tsi_result tsi_frame_protector_protect_flush(
+    tsi_frame_protector* self, unsigned char* protected_output_frames,
+    size_t* protected_output_frames_size, size_t* still_pending_size);
+
+/* Outputs unprotected bytes.
+   - protected_frames_bytes is an input only parameter and points to the
+     protected frames to be unprotected.
+   - protected_frames_bytes_size is an input/output only parameter used by the
+     caller to specify how many bytes are available in protected_bytes. The
+     output value is the number of bytes consumed during the call.
+     Implementations will buffer up to a frame of protected data.
+   - unprotected_bytes points to a buffer allocated by the caller that will be
+     written.
+   - unprotected_bytes_size is an input/output parameter used by the caller to
+     specify how many bytes are available in unprotected_bytes. This
+     value is expected to be at most max_protected_frame_size minus overhead
+     which means that max_protected_frame_size is a safe bet. The output value
+     is the number of bytes actually written.
+     If *unprotected_bytes_size is unchanged, there may be more data remaining
+     to unprotect, and the caller should call this function again.
+
+   - This method returns TSI_OK in case of success. Success includes cases where
+     there is not enough data to output a frame in which case
+     unprotected_bytes_size will be set to 0 and cases where the internal buffer
+     needs to be read before new protected data can be processed in which case
+     protected_frames_size will be set to 0.  */
+tsi_result tsi_frame_protector_unprotect(
+    tsi_frame_protector* self, const unsigned char* protected_frames_bytes,
+    size_t* protected_frames_bytes_size, unsigned char* unprotected_bytes,
+    size_t* unprotected_bytes_size);
+
+/* Destroys the tsi_frame_protector object.  */
+void tsi_frame_protector_destroy(tsi_frame_protector* self);
+
+/* --- tsi_peer objects ---
+
+   tsi_peer objects are a set of properties. The peer owns the properties.  */
+
+/* This property is of type TSI_PEER_PROPERTY_STRING.  */
+#define TSI_CERTIFICATE_TYPE_PEER_PROPERTY "certificate_type"
+
+/* This property represents security level of a channel. */
+#define TSI_SECURITY_LEVEL_PEER_PROPERTY "security_level"
+
+/* Property values may contain NULL characters just like C++ strings.
+   The length field gives the length of the string. */
+typedef struct tsi_peer_property {
+  char* name;
+  struct {
+    char* data;
+    size_t length;
+  } value;
+} tsi_peer_property;
+
+typedef struct {
+  tsi_peer_property* properties;
+  size_t property_count;
+} tsi_peer;
+
+/* Destructs the tsi_peer object. */
+void tsi_peer_destruct(tsi_peer* self);
+
+/*  --- tsi_handshaker_result object ---
+
+  This object contains all necessary handshake results and data such as peer
+  info, negotiated keys, unused handshake bytes, when the handshake completes.
+  Implementations of this object must be thread compatible.  */
+
+typedef struct tsi_handshaker_result tsi_handshaker_result;
+
+/* This method extracts tsi peer. It returns TSI_OK assuming there is no fatal
+   error.
+   The caller is responsible for destructing the peer.  */
+tsi_result tsi_handshaker_result_extract_peer(const tsi_handshaker_result* self,
+                                              tsi_peer* peer);
+
+/* This method creates a tsi_frame_protector object. It returns TSI_OK assuming
+   there is no fatal error.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector);
+
+/* This method returns the unused bytes from the handshake. It returns TSI_OK
+   assuming there is no fatal error.
+   Ownership of the bytes is retained by the handshaker result. As a
+   consequence, the caller must not free the bytes.  */
+tsi_result tsi_handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* byte_size);
+
+/* This method releases the tsi_handshaker_handshaker object. After this method
+   is called, no other method can be called on the object.  */
+void tsi_handshaker_result_destroy(tsi_handshaker_result* self);
+
+/* --- tsi_handshaker objects ----
+
+   Implementations of this object must be thread compatible.
+
+   ------------------------------------------------------------------------
+
+   A typical usage supporting both synchronous and asynchronous TSI handshaker
+   implementations would be:
+
+   ------------------------------------------------------------------------
+
+   typedef struct {
+     tsi_handshaker *handshaker;
+     tsi_handshaker_result *handshaker_result;
+     unsigned char *handshake_buffer;
+     size_t handshake_buffer_size;
+     ...
+   } security_handshaker;
+
+   void do_handshake(security_handshaker *h, ...) {
+     // Start the handshake by the calling do_handshake_next.
+     do_handshake_next(h, NULL, 0);
+     ...
+   }
+
+   // This method is the callback function when data is received from the
+   // peer. This method will read bytes into the handshake buffer and call
+   // do_handshake_next.
+   void on_handshake_data_received_from_peer(void *user_data) {
+     security_handshaker *h = (security_handshaker *)user_data;
+     size_t bytes_received_size = h->handshake_buffer_size;
+     read_bytes_from_peer(h->handshake_buffer, &bytes_received_size);
+     do_handshake_next(h, h->handshake_buffer, bytes_received_size);
+   }
+
+   // This method processes a step of handshake, calling tsi_handshaker_next.
+   void do_handshake_next(security_handshaker *h,
+                          const unsigned char* bytes_received,
+                          size_t bytes_received_size) {
+     tsi_result status = TSI_OK;
+     unsigned char *bytes_to_send = NULL;
+     size_t bytes_to_send_size = 0;
+     tsi_handshaker_result *result = NULL;
+     status = tsi_handshaker_next(
+         handshaker, bytes_received, bytes_received_size, &bytes_to_send,
+         &bytes_to_send_size, &result, on_handshake_next_done, h);
+     // If TSI handshaker is asynchronous, on_handshake_next_done will be
+     // executed inside tsi_handshaker_next.
+     if (status == TSI_ASYNC) return;
+     // If TSI handshaker is synchronous, invoke callback directly in this
+     // thread.
+     on_handshake_next_done(status, (void *)h, bytes_to_send,
+                            bytes_to_send_size, result);
+   }
+
+   // This is the callback function to execute after tsi_handshaker_next.
+   // It is passed to tsi_handshaker_next as a function parameter.
+   void on_handshake_next_done(
+       tsi_result status, void *user_data, const unsigned char *bytes_to_send,
+       size_t bytes_to_send_size, tsi_handshaker_result *result) {
+     security_handshaker *h = (security_handshaker *)user_data;
+     if (status == TSI_INCOMPLETE_DATA) {
+       // Schedule an asynchronous read from the peer. If handshake data are
+       // received, on_handshake_data_received_from_peer will be called.
+       async_read_from_peer(..., ..., on_handshake_data_received_from_peer);
+       return;
+     }
+     if (status != TSI_OK) return;
+
+     if (bytes_to_send_size > 0) {
+       send_bytes_to_peer(bytes_to_send, bytes_to_send_size);
+     }
+
+     if (result != NULL) {
+       // Handshake completed.
+       h->result = result;
+       // Check the Peer.
+       tsi_peer peer;
+       status = tsi_handshaker_result_extract_peer(result, &peer);
+       if (status != TSI_OK) return;
+       status = check_peer(&peer);
+       tsi_peer_destruct(&peer);
+       if (status != TSI_OK) return;
+
+       // Create the protector.
+       tsi_frame_protector* protector = NULL;
+       status = tsi_handshaker_result_create_frame_protector(result, NULL,
+                                                             &protector);
+       if (status != TSI_OK) return;
+
+       // Do not forget to unprotect outstanding data if any.
+       ....
+     }
+   }
+   ------------------------------------------------------------------------   */
+typedef struct tsi_handshaker tsi_handshaker;
+
+/* TODO(jiangtaoli2016): Cleans up deprecated methods when we are ready. */
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_next instead.
+   Gets bytes that need to be sent to the peer.
+   - bytes is the buffer that will be written with the data to be sent to the
+     peer.
+   - bytes_size is an input/output parameter specifying the capacity of the
+     bytes parameter as input and the number of bytes written as output.
+   Returns TSI_OK if all the data to send to the peer has been written or if
+   nothing has to be sent to the peer (in which base bytes_size outputs to 0),
+   otherwise returns TSI_INCOMPLETE_DATA which indicates that this method
+   needs to be called again to get all the bytes to send to the peer (there
+   was more data to write than the specified bytes_size). In case of a fatal
+   error in the handshake, another specific error code is returned.  */
+tsi_result tsi_handshaker_get_bytes_to_send_to_peer(tsi_handshaker* self,
+                                                    unsigned char* bytes,
+                                                    size_t* bytes_size);
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_next instead.
+   Processes bytes received from the peer.
+   - bytes is the buffer containing the data.
+   - bytes_size is an input/output parameter specifying the size of the data as
+     input and the number of bytes consumed as output.
+   Return TSI_OK if the handshake has all the data it needs to process,
+   otherwise return TSI_INCOMPLETE_DATA which indicates that this method
+   needs to be called again to complete the data needed for processing. In
+   case of a fatal error in the handshake, another specific error code is
+   returned.  */
+tsi_result tsi_handshaker_process_bytes_from_peer(tsi_handshaker* self,
+                                                  const unsigned char* bytes,
+                                                  size_t* bytes_size);
+
+/* TO BE DEPRECATED SOON.
+   Gets the result of the handshaker.
+   Returns TSI_OK if the hanshake completed successfully and there has been no
+   errors. Returns TSI_HANDSHAKE_IN_PROGRESS if the handshaker is not done yet
+   but no error has been encountered so far. Otherwise the handshaker failed
+   with the returned error.  */
+tsi_result tsi_handshaker_get_result(tsi_handshaker* self);
+
+/* TO BE DEPRECATED SOON.
+   Returns 1 if the handshake is in progress, 0 otherwise.  */
+#define tsi_handshaker_is_in_progress(h) \
+  (tsi_handshaker_get_result((h)) == TSI_HANDSHAKE_IN_PROGRESS)
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_result_extract_peer instead.
+   This method may return TSI_FAILED_PRECONDITION if
+   tsi_handshaker_is_in_progress returns 1, it returns TSI_OK otherwise
+   assuming the handshaker is not in a fatal error state.
+   The caller is responsible for destructing the peer.  */
+tsi_result tsi_handshaker_extract_peer(tsi_handshaker* self, tsi_peer* peer);
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_result_create_frame_protector
+   instead.
+   This method creates a tsi_frame_protector object after the handshake phase
+   is done. After this method has been called successfully, the only method
+   that can be called on this object is Destroy.
+   - max_output_protected_frame_size is an input/output parameter specifying the
+     desired max output protected frame size as input and outputing the actual
+     max output frame size as the output. Passing NULL is OK and will result in
+     the implementation choosing the default maximum protected frame size. Note
+     that this size only applies to outgoing frames (generated with
+     tsi_frame_protector_protect) and not incoming frames (input of
+     tsi_frame_protector_unprotect).
+   - protector is an output parameter pointing to the newly created
+     tsi_frame_protector object.
+   This method may return TSI_FAILED_PRECONDITION if
+   tsi_handshaker_is_in_progress returns 1, it returns TSI_OK otherwise assuming
+   the handshaker is not in a fatal error state.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_create_frame_protector(
+    tsi_handshaker* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector);
+
+/* Callback function definition for tsi_handshaker_next.
+   - status indicates the status of the next operation.
+   - user_data is the argument to callback function passed from the caller.
+   - bytes_to_send is the data buffer to be sent to the peer.
+   - bytes_to_send_size is the size of data buffer to be sent to the peer.
+   - handshaker_result is the result of handshake when the handshake completes,
+     is NULL otherwise.  */
+typedef void (*tsi_handshaker_on_next_done_cb)(
+    tsi_result status, void* user_data, const unsigned char* bytes_to_send,
+    size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result);
+
+/* Conduct a next step of the handshake.
+   - received_bytes is the buffer containing the data received from the peer.
+   - received_bytes_size is the size of the data received from the peer.
+   - bytes_to_send is the data buffer to be sent to the peer.
+   - bytes_to_send_size is the size of data buffer to be sent to the peer.
+   - handshaker_result is the result of handshake if the handshake completes.
+   - cb is the callback function defined above. It can be NULL for synchronous
+     TSI handshaker implementation.
+   - user_data is the argument to callback function passed from the caller.
+   This method returns TSI_ASYNC if the TSI handshaker implementation is
+   asynchronous, and in this case, the callback is guaranteed to run in another
+   thread owned by TSI. It returns TSI_OK if the handshake completes or if
+   there are data to send to the peer, otherwise returns TSI_INCOMPLETE_DATA
+   which indicates that this method needs to be called again with more data
+   from the peer. In case of a fatal error in the handshake, another specific
+   error code is returned.
+   The caller is responsible for destroying the handshaker_result. However,
+   the caller should not free bytes_to_send, as the buffer is owned by the
+   tsi_handshaker object.  */
+tsi_result tsi_handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** handshaker_result,
+    tsi_handshaker_on_next_done_cb cb, void* user_data);
+
+/* This method shuts down a TSI handshake that is in progress.
+ *
+ * This method will be invoked when TSI handshake should be terminated before
+ * being finished in order to free any resources being used.
+ */
+void tsi_handshaker_shutdown(tsi_handshaker* self);
+
+/* This method releases the tsi_handshaker object. After this method is called,
+   no other method can be called on the object.  */
+void tsi_handshaker_destroy(tsi_handshaker* self);
+
+/* This method initializes the necessary shared objects used for tsi
+   implementation.  */
+void tsi_init();
+
+/* This method destroys the shared objects created by tsi_init.  */
+void tsi_destroy();
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/channel_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/channel_cc.cc
new file mode 100644
index 0000000..f7ac284
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/channel_cc.cc	
@@ -0,0 +1,257 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/channel.h>
+
+#include <cstring>
+#include <memory>
+
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/codegen/call_op_set.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/security/credentials.h>
+#include <grpcpp/support/channel_arguments.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/status.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+void ::grpc::experimental::ChannelResetConnectionBackoff(Channel* channel) {
+  grpc_impl::experimental::ChannelResetConnectionBackoff(channel);
+}
+
+namespace grpc_impl {
+
+static ::grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+Channel::Channel(const grpc::string& host, grpc_channel* channel,
+                 std::vector<std::unique_ptr<
+                     ::grpc::experimental::ClientInterceptorFactoryInterface>>
+                     interceptor_creators)
+    : host_(host), c_channel_(channel) {
+  interceptor_creators_ = std::move(interceptor_creators);
+  g_gli_initializer.summon();
+}
+
+Channel::~Channel() {
+  grpc_channel_destroy(c_channel_);
+  if (callback_cq_ != nullptr) {
+    callback_cq_->Shutdown();
+  }
+}
+
+namespace {
+
+inline grpc_slice SliceFromArray(const char* arr, size_t len) {
+  return ::grpc::g_core_codegen_interface->grpc_slice_from_copied_buffer(arr,
+                                                                         len);
+}
+
+grpc::string GetChannelInfoField(grpc_channel* channel,
+                                 grpc_channel_info* channel_info,
+                                 char*** channel_info_field) {
+  char* value = nullptr;
+  memset(channel_info, 0, sizeof(*channel_info));
+  *channel_info_field = &value;
+  grpc_channel_get_info(channel, channel_info);
+  if (value == nullptr) return "";
+  grpc::string result = value;
+  gpr_free(value);
+  return result;
+}
+
+}  // namespace
+
+grpc::string Channel::GetLoadBalancingPolicyName() const {
+  grpc_channel_info channel_info;
+  return GetChannelInfoField(c_channel_, &channel_info,
+                             &channel_info.lb_policy_name);
+}
+
+grpc::string Channel::GetServiceConfigJSON() const {
+  grpc_channel_info channel_info;
+  return GetChannelInfoField(c_channel_, &channel_info,
+                             &channel_info.service_config_json);
+}
+
+namespace experimental {
+
+void ChannelResetConnectionBackoff(Channel* channel) {
+  grpc_channel_reset_connect_backoff(channel->c_channel_);
+}
+
+}  // namespace experimental
+
+::grpc::internal::Call Channel::CreateCallInternal(
+    const ::grpc::internal::RpcMethod& method, ::grpc::ClientContext* context,
+    ::grpc::CompletionQueue* cq, size_t interceptor_pos) {
+  const bool kRegistered = method.channel_tag() && context->authority().empty();
+  grpc_call* c_call = nullptr;
+  if (kRegistered) {
+    c_call = grpc_channel_create_registered_call(
+        c_channel_, context->propagate_from_call_,
+        context->propagation_options_.c_bitmask(), cq->cq(),
+        method.channel_tag(), context->raw_deadline(), nullptr);
+  } else {
+    const ::grpc::string* host_str = nullptr;
+    if (!context->authority_.empty()) {
+      host_str = &context->authority_;
+    } else if (!host_.empty()) {
+      host_str = &host_;
+    }
+    grpc_slice method_slice =
+        SliceFromArray(method.name(), strlen(method.name()));
+    grpc_slice host_slice;
+    if (host_str != nullptr) {
+      host_slice = ::grpc::SliceFromCopiedString(*host_str);
+    }
+    c_call = grpc_channel_create_call(
+        c_channel_, context->propagate_from_call_,
+        context->propagation_options_.c_bitmask(), cq->cq(), method_slice,
+        host_str == nullptr ? nullptr : &host_slice, context->raw_deadline(),
+        nullptr);
+    grpc_slice_unref(method_slice);
+    if (host_str != nullptr) {
+      grpc_slice_unref(host_slice);
+    }
+  }
+  grpc_census_call_set_context(c_call, context->census_context());
+
+  // ClientRpcInfo should be set before call because set_call also checks
+  // whether the call has been cancelled, and if the call was cancelled, we
+  // should notify the interceptors too.
+  auto* info =
+      context->set_client_rpc_info(method.name(), method.method_type(), this,
+                                   interceptor_creators_, interceptor_pos);
+  context->set_call(c_call, shared_from_this());
+
+  return ::grpc::internal::Call(c_call, this, cq, info);
+}
+
+::grpc::internal::Call Channel::CreateCall(
+    const ::grpc::internal::RpcMethod& method, ::grpc::ClientContext* context,
+    CompletionQueue* cq) {
+  return CreateCallInternal(method, context, cq, 0);
+}
+
+void Channel::PerformOpsOnCall(::grpc::internal::CallOpSetInterface* ops,
+                               ::grpc::internal::Call* call) {
+  ops->FillOps(
+      call);  // Make a copy of call. It's fine since Call just has pointers
+}
+
+void* Channel::RegisterMethod(const char* method) {
+  return grpc_channel_register_call(
+      c_channel_, method, host_.empty() ? nullptr : host_.c_str(), nullptr);
+}
+
+grpc_connectivity_state Channel::GetState(bool try_to_connect) {
+  return grpc_channel_check_connectivity_state(c_channel_, try_to_connect);
+}
+
+namespace {
+
+class TagSaver final : public ::grpc::internal::CompletionQueueTag {
+ public:
+  explicit TagSaver(void* tag) : tag_(tag) {}
+  ~TagSaver() override {}
+  bool FinalizeResult(void** tag, bool* /*status*/) override {
+    *tag = tag_;
+    delete this;
+    return true;
+  }
+
+ private:
+  void* tag_;
+};
+
+}  // namespace
+
+void Channel::NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                                      gpr_timespec deadline,
+                                      ::grpc::CompletionQueue* cq, void* tag) {
+  TagSaver* tag_saver = new TagSaver(tag);
+  grpc_channel_watch_connectivity_state(c_channel_, last_observed, deadline,
+                                        cq->cq(), tag_saver);
+}
+
+bool Channel::WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                                     gpr_timespec deadline) {
+  ::grpc::CompletionQueue cq;
+  bool ok = false;
+  void* tag = nullptr;
+  NotifyOnStateChangeImpl(last_observed, deadline, &cq, nullptr);
+  cq.Next(&tag, &ok);
+  GPR_ASSERT(tag == nullptr);
+  return ok;
+}
+
+namespace {
+class ShutdownCallback : public grpc_experimental_completion_queue_functor {
+ public:
+  ShutdownCallback() {
+    functor_run = &ShutdownCallback::Run;
+    // Set inlineable to true since this callback is trivial and thus does not
+    // need to be run from the executor (triggering a thread hop). This should
+    // only be used by internal callbacks like this and not by user application
+    // code.
+    inlineable = true;
+  }
+  // TakeCQ takes ownership of the cq into the shutdown callback
+  // so that the shutdown callback will be responsible for destroying it
+  void TakeCQ(::grpc::CompletionQueue* cq) { cq_ = cq; }
+
+  // The Run function will get invoked by the completion queue library
+  // when the shutdown is actually complete
+  static void Run(grpc_experimental_completion_queue_functor* cb, int) {
+    auto* callback = static_cast<ShutdownCallback*>(cb);
+    delete callback->cq_;
+    delete callback;
+  }
+
+ private:
+  ::grpc::CompletionQueue* cq_ = nullptr;
+};
+}  // namespace
+
+::grpc::CompletionQueue* Channel::CallbackCQ() {
+  // TODO(vjpai): Consider using a single global CQ for the default CQ
+  // if there is no explicit per-channel CQ registered
+  grpc::internal::MutexLock l(&mu_);
+  if (callback_cq_ == nullptr) {
+    auto* shutdown_callback = new ShutdownCallback;
+    callback_cq_ = new ::grpc::CompletionQueue(grpc_completion_queue_attributes{
+        GRPC_CQ_CURRENT_VERSION, GRPC_CQ_CALLBACK, GRPC_CQ_DEFAULT_POLLING,
+        shutdown_callback});
+
+    // Transfer ownership of the new cq to its own shutdown callback
+    shutdown_callback->TakeCQ(callback_cq_);
+  }
+  return callback_cq_;
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_context.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_context.cc
new file mode 100644
index 0000000..6865758
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_context.cc	
@@ -0,0 +1,181 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/client_context.h>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include <grpcpp/impl/codegen/interceptor_common.h>
+#include <grpcpp/impl/codegen/sync.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/security/credentials.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/support/time.h>
+
+namespace grpc_impl {
+
+class Channel;
+
+class DefaultGlobalClientCallbacks final
+    : public ClientContext::GlobalCallbacks {
+ public:
+  ~DefaultGlobalClientCallbacks() override {}
+  void DefaultConstructor(ClientContext* /*context*/) override {}
+  void Destructor(ClientContext* /*context*/) override {}
+};
+
+static grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+static DefaultGlobalClientCallbacks* g_default_client_callbacks =
+    new DefaultGlobalClientCallbacks();
+static ClientContext::GlobalCallbacks* g_client_callbacks =
+    g_default_client_callbacks;
+
+ClientContext::ClientContext()
+    : initial_metadata_received_(false),
+      wait_for_ready_(false),
+      wait_for_ready_explicitly_set_(false),
+      idempotent_(false),
+      cacheable_(false),
+      call_(nullptr),
+      call_canceled_(false),
+      deadline_(gpr_inf_future(GPR_CLOCK_REALTIME)),
+      census_context_(nullptr),
+      propagate_from_call_(nullptr),
+      compression_algorithm_(GRPC_COMPRESS_NONE),
+      initial_metadata_corked_(false) {
+  g_client_callbacks->DefaultConstructor(this);
+}
+
+ClientContext::~ClientContext() {
+  if (call_) {
+    grpc_call_unref(call_);
+  }
+  g_client_callbacks->Destructor(this);
+}
+
+void ClientContext::set_credentials(
+    const std::shared_ptr<grpc_impl::CallCredentials>& creds) {
+  creds_ = creds;
+  // If call_ is set, we have already created the call, and set the call
+  // credentials. This should only be done before we have started the batch
+  // for sending initial metadata.
+  if (creds_ != nullptr && call_ != nullptr) {
+    if (!creds_->ApplyToCall(call_)) {
+      SendCancelToInterceptors();
+      grpc_call_cancel_with_status(call_, GRPC_STATUS_CANCELLED,
+                                   "Failed to set credentials to rpc.",
+                                   nullptr);
+    }
+  }
+}
+
+std::unique_ptr<ClientContext> ClientContext::FromInternalServerContext(
+    const grpc_impl::ServerContextBase& context, PropagationOptions options) {
+  std::unique_ptr<ClientContext> ctx(new ClientContext);
+  ctx->propagate_from_call_ = context.call_;
+  ctx->propagation_options_ = options;
+  return ctx;
+}
+
+std::unique_ptr<ClientContext> ClientContext::FromServerContext(
+    const grpc_impl::ServerContext& server_context,
+    PropagationOptions options) {
+  return FromInternalServerContext(server_context, options);
+}
+
+std::unique_ptr<ClientContext> ClientContext::FromCallbackServerContext(
+    const grpc_impl::CallbackServerContext& server_context,
+    PropagationOptions options) {
+  return FromInternalServerContext(server_context, options);
+}
+
+void ClientContext::AddMetadata(const grpc::string& meta_key,
+                                const grpc::string& meta_value) {
+  send_initial_metadata_.insert(std::make_pair(meta_key, meta_value));
+}
+
+void ClientContext::set_call(
+    grpc_call* call, const std::shared_ptr<::grpc_impl::Channel>& channel) {
+  grpc::internal::MutexLock lock(&mu_);
+  GPR_ASSERT(call_ == nullptr);
+  call_ = call;
+  channel_ = channel;
+  if (creds_ && !creds_->ApplyToCall(call_)) {
+    // TODO(yashykt): should interceptors also see this status?
+    SendCancelToInterceptors();
+    grpc_call_cancel_with_status(call, GRPC_STATUS_CANCELLED,
+                                 "Failed to set credentials to rpc.", nullptr);
+  }
+  if (call_canceled_) {
+    SendCancelToInterceptors();
+    grpc_call_cancel(call_, nullptr);
+  }
+}
+
+void ClientContext::set_compression_algorithm(
+    grpc_compression_algorithm algorithm) {
+  compression_algorithm_ = algorithm;
+  const char* algorithm_name = nullptr;
+  if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
+    gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",
+            algorithm);
+    abort();
+  }
+  GPR_ASSERT(algorithm_name != nullptr);
+  AddMetadata(GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY, algorithm_name);
+}
+
+void ClientContext::TryCancel() {
+  grpc::internal::MutexLock lock(&mu_);
+  if (call_) {
+    SendCancelToInterceptors();
+    grpc_call_cancel(call_, nullptr);
+  } else {
+    call_canceled_ = true;
+  }
+}
+
+void ClientContext::SendCancelToInterceptors() {
+  grpc::internal::CancelInterceptorBatchMethods cancel_methods;
+  for (size_t i = 0; i < rpc_info_.interceptors_.size(); i++) {
+    rpc_info_.RunInterceptor(&cancel_methods, i);
+  }
+}
+
+grpc::string ClientContext::peer() const {
+  grpc::string peer;
+  if (call_) {
+    char* c_peer = grpc_call_get_peer(call_);
+    peer = c_peer;
+    gpr_free(c_peer);
+  }
+  return peer;
+}
+
+void ClientContext::SetGlobalCallbacks(GlobalCallbacks* client_callbacks) {
+  GPR_ASSERT(g_client_callbacks == g_default_client_callbacks);
+  GPR_ASSERT(client_callbacks != nullptr);
+  GPR_ASSERT(client_callbacks != g_default_client_callbacks);
+  g_client_callbacks = client_callbacks;
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_interceptor.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_interceptor.cc
new file mode 100644
index 0000000..a91950c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/client_interceptor.cc	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/codegen/client_interceptor.h>
+
+namespace grpc {
+
+namespace internal {
+experimental::ClientInterceptorFactoryInterface*
+    g_global_client_interceptor_factory = nullptr;
+}
+
+namespace experimental {
+void RegisterGlobalClientInterceptorFactory(
+    ClientInterceptorFactoryInterface* factory) {
+  if (internal::g_global_client_interceptor_factory != nullptr) {
+    GPR_ASSERT(false &&
+               "It is illegal to call RegisterGlobalClientInterceptorFactory "
+               "multiple times.");
+  }
+  internal::g_global_client_interceptor_factory = factory;
+}
+
+// For testing purposes only.
+void TestOnlyResetGlobalClientInterceptorFactory() {
+  internal::g_global_client_interceptor_factory = nullptr;
+}
+}  // namespace experimental
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel.cc
new file mode 100644
index 0000000..c6041ed
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel.cc	
@@ -0,0 +1,85 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <memory>
+
+#include <grpcpp/channel.h>
+#include <grpcpp/create_channel.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/security/credentials.h>
+#include <grpcpp/support/channel_arguments.h>
+
+#include "src/cpp/client/create_channel_internal.h"
+
+namespace grpc_impl {
+std::shared_ptr<grpc::Channel> CreateChannelImpl(
+    const grpc::string& target,
+    const std::shared_ptr<grpc::ChannelCredentials>& creds) {
+  return CreateCustomChannelImpl(target, creds, grpc::ChannelArguments());
+}
+
+std::shared_ptr<grpc::Channel> CreateCustomChannelImpl(
+    const grpc::string& target,
+    const std::shared_ptr<grpc::ChannelCredentials>& creds,
+    const grpc::ChannelArguments& args) {
+  grpc::GrpcLibraryCodegen
+      init_lib;  // We need to call init in case of bad creds.
+  return creds ? creds->CreateChannelImpl(target, args)
+               : grpc::CreateChannelInternal(
+                     "",
+                     grpc_lame_client_channel_create(
+                         nullptr, GRPC_STATUS_INVALID_ARGUMENT,
+                         "Invalid credentials."),
+                     std::vector<std::unique_ptr<
+                         grpc::experimental::
+                             ClientInterceptorFactoryInterface>>());
+}
+
+namespace experimental {
+/// Create a new \em custom \a Channel pointing to \a target with \a
+/// interceptors being invoked per call.
+///
+/// \warning For advanced use and testing ONLY. Override default channel
+/// arguments only if necessary.
+///
+/// \param target The URI of the endpoint to connect to.
+/// \param creds Credentials to use for the created channel. If it does not
+/// hold an object or is invalid, a lame channel (one on which all operations
+/// fail) is returned.
+/// \param args Options for channel creation.
+std::shared_ptr<grpc::Channel> CreateCustomChannelWithInterceptors(
+    const grpc::string& target,
+    const std::shared_ptr<grpc::ChannelCredentials>& creds,
+    const grpc::ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  grpc::GrpcLibraryCodegen
+      init_lib;  // We need to call init in case of bad creds.
+  return creds ? creds->CreateChannelWithInterceptors(
+                     target, args, std::move(interceptor_creators))
+               : grpc::CreateChannelInternal(
+                     "",
+                     grpc_lame_client_channel_create(
+                         nullptr, GRPC_STATUS_INVALID_ARGUMENT,
+                         "Invalid credentials."),
+                     std::move(interceptor_creators));
+}
+}  // namespace experimental
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.cc
new file mode 100644
index 0000000..63e1d14
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <memory>
+
+#include <grpcpp/channel.h>
+
+struct grpc_channel;
+
+namespace grpc {
+
+std::shared_ptr<Channel> CreateChannelInternal(
+    const grpc::string& host, grpc_channel* c_channel,
+    std::vector<std::unique_ptr<
+        ::grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  return std::shared_ptr<Channel>(
+      new Channel(host, c_channel, std::move(interceptor_creators)));
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.h
new file mode 100644
index 0000000..4abd4c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_internal.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_CLIENT_CREATE_CHANNEL_INTERNAL_H
+#define GRPC_INTERNAL_CPP_CLIENT_CREATE_CHANNEL_INTERNAL_H
+
+#include <memory>
+
+#include <grpcpp/channel.h>
+#include <grpcpp/impl/codegen/client_interceptor.h>
+#include <grpcpp/support/config.h>
+
+struct grpc_channel;
+
+namespace grpc {
+
+std::shared_ptr<Channel> CreateChannelInternal(
+    const grpc::string& host, grpc_channel* c_channel,
+    std::vector<std::unique_ptr<
+        ::grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators);
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_CLIENT_CREATE_CHANNEL_INTERNAL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_posix.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_posix.cc
new file mode 100644
index 0000000..ca26c3f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/create_channel_posix.cc	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_posix.h>
+#include <grpcpp/channel.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/channel_arguments.h>
+
+#include "src/cpp/client/create_channel_internal.h"
+
+namespace grpc_impl {
+
+class ChannelArguments;
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+std::shared_ptr<grpc::Channel> CreateInsecureChannelFromFd(
+    const grpc::string& target, int fd) {
+  grpc::internal::GrpcLibrary init_lib;
+  init_lib.init();
+  return ::grpc::CreateChannelInternal(
+      "", grpc_insecure_channel_create_from_fd(target.c_str(), fd, nullptr),
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>());
+}
+
+std::shared_ptr<grpc::Channel> CreateCustomInsecureChannelFromFd(
+    const grpc::string& target, int fd, const grpc::ChannelArguments& args) {
+  grpc::internal::GrpcLibrary init_lib;
+  init_lib.init();
+  grpc_channel_args channel_args;
+  args.SetChannelArgs(&channel_args);
+  return ::grpc::CreateChannelInternal(
+      "",
+      grpc_insecure_channel_create_from_fd(target.c_str(), fd, &channel_args),
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>());
+}
+
+namespace experimental {
+
+std::shared_ptr<grpc::Channel>
+CreateCustomInsecureChannelWithInterceptorsFromFd(
+    const grpc::string& target, int fd, const grpc::ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  grpc::internal::GrpcLibrary init_lib;
+  init_lib.init();
+  grpc_channel_args channel_args;
+  args.SetChannelArgs(&channel_args);
+  return ::grpc::CreateChannelInternal(
+      "",
+      grpc_insecure_channel_create_from_fd(target.c_str(), fd, &channel_args),
+      std::move(interceptor_creators));
+}
+
+}  // namespace experimental
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/credentials_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/credentials_cc.cc
new file mode 100644
index 0000000..62334bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/credentials_cc.cc	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/security/credentials.h>
+
+namespace grpc_impl {
+
+static grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+ChannelCredentials::ChannelCredentials() { g_gli_initializer.summon(); }
+
+ChannelCredentials::~ChannelCredentials() {}
+
+CallCredentials::CallCredentials() { g_gli_initializer.summon(); }
+
+CallCredentials::~CallCredentials() {}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/insecure_credentials.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/insecure_credentials.cc
new file mode 100644
index 0000000..0556fa0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/insecure_credentials.cc	
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpcpp/security/credentials.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/channel.h>
+#include <grpcpp/support/channel_arguments.h>
+#include <grpcpp/support/config.h>
+#include "src/cpp/client/create_channel_internal.h"
+
+namespace grpc_impl {
+
+namespace {
+class InsecureChannelCredentialsImpl final : public ChannelCredentials {
+ public:
+  std::shared_ptr<Channel> CreateChannelImpl(
+      const grpc::string& target, const ChannelArguments& args) override {
+    return CreateChannelWithInterceptors(
+        target, args,
+        std::vector<std::unique_ptr<
+            grpc::experimental::ClientInterceptorFactoryInterface>>());
+  }
+
+  std::shared_ptr<Channel> CreateChannelWithInterceptors(
+      const grpc::string& target, const ChannelArguments& args,
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>
+          interceptor_creators) override {
+    grpc_channel_args channel_args;
+    args.SetChannelArgs(&channel_args);
+    return ::grpc::CreateChannelInternal(
+        "",
+        grpc_insecure_channel_create(target.c_str(), &channel_args, nullptr),
+        std::move(interceptor_creators));
+  }
+
+  SecureChannelCredentials* AsSecureCredentials() override { return nullptr; }
+};
+}  // namespace
+
+std::shared_ptr<ChannelCredentials> InsecureChannelCredentials() {
+  return std::shared_ptr<ChannelCredentials>(
+      new InsecureChannelCredentialsImpl());
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.cc
new file mode 100644
index 0000000..33f56d3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.cc	
@@ -0,0 +1,505 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/client/secure_credentials.h"
+
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/slice.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpcpp/channel.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/channel_arguments.h>
+
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/security/transport/auth_filters.h"
+#include "src/core/lib/security/util/json_util.h"
+#include "src/cpp/client/create_channel_internal.h"
+#include "src/cpp/common/secure_auth_context.h"
+
+namespace grpc_impl {
+
+static grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+SecureChannelCredentials::SecureChannelCredentials(
+    grpc_channel_credentials* c_creds)
+    : c_creds_(c_creds) {
+  g_gli_initializer.summon();
+}
+
+std::shared_ptr<Channel> SecureChannelCredentials::CreateChannelImpl(
+    const grpc::string& target, const ChannelArguments& args) {
+  return CreateChannelWithInterceptors(
+      target, args,
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>());
+}
+
+std::shared_ptr<Channel>
+SecureChannelCredentials::CreateChannelWithInterceptors(
+    const grpc::string& target, const ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  grpc_channel_args channel_args;
+  args.SetChannelArgs(&channel_args);
+  return ::grpc::CreateChannelInternal(
+      args.GetSslTargetNameOverride(),
+      grpc_secure_channel_create(c_creds_, target.c_str(), &channel_args,
+                                 nullptr),
+      std::move(interceptor_creators));
+}
+
+SecureCallCredentials::SecureCallCredentials(grpc_call_credentials* c_creds)
+    : c_creds_(c_creds) {
+  g_gli_initializer.summon();
+}
+
+bool SecureCallCredentials::ApplyToCall(grpc_call* call) {
+  return grpc_call_set_credentials(call, c_creds_) == GRPC_CALL_OK;
+}
+
+namespace {
+std::shared_ptr<ChannelCredentials> WrapChannelCredentials(
+    grpc_channel_credentials* creds) {
+  return creds == nullptr ? nullptr
+                          : std::shared_ptr<ChannelCredentials>(
+                                new SecureChannelCredentials(creds));
+}
+
+std::shared_ptr<CallCredentials> WrapCallCredentials(
+    grpc_call_credentials* creds) {
+  return creds == nullptr ? nullptr
+                          : std::shared_ptr<CallCredentials>(
+                                new SecureCallCredentials(creds));
+}
+}  // namespace
+
+std::shared_ptr<ChannelCredentials> GoogleDefaultCredentials() {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapChannelCredentials(grpc_google_default_credentials_create());
+}
+
+// Builds SSL Credentials given SSL specific options
+std::shared_ptr<ChannelCredentials> SslCredentials(
+    const SslCredentialsOptions& options) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {
+      options.pem_private_key.c_str(), options.pem_cert_chain.c_str()};
+
+  grpc_channel_credentials* c_creds = grpc_ssl_credentials_create(
+      options.pem_root_certs.empty() ? nullptr : options.pem_root_certs.c_str(),
+      options.pem_private_key.empty() ? nullptr : &pem_key_cert_pair, nullptr,
+      nullptr);
+  return WrapChannelCredentials(c_creds);
+}
+
+namespace experimental {
+
+namespace {
+
+void ClearStsCredentialsOptions(StsCredentialsOptions* options) {
+  if (options == nullptr) return;
+  options->token_exchange_service_uri.clear();
+  options->resource.clear();
+  options->audience.clear();
+  options->scope.clear();
+  options->requested_token_type.clear();
+  options->subject_token_path.clear();
+  options->subject_token_type.clear();
+  options->actor_token_path.clear();
+  options->actor_token_type.clear();
+}
+
+}  // namespace
+
+// Builds STS credentials options from JSON.
+grpc::Status StsCredentialsOptionsFromJson(const grpc::string& json_string,
+                                           StsCredentialsOptions* options) {
+  if (options == nullptr) {
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT,
+                        "options cannot be nullptr.");
+  }
+  ClearStsCredentialsOptions(options);
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_core::Json json = grpc_core::Json::Parse(json_string.c_str(), &error);
+  if (error != GRPC_ERROR_NONE ||
+      json.type() != grpc_core::Json::Type::OBJECT) {
+    GRPC_ERROR_UNREF(error);
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT, "Invalid json.");
+  }
+
+  // Required fields.
+  const char* value = grpc_json_get_string_property(
+      json, "token_exchange_service_uri", nullptr);
+  if (value == nullptr) {
+    ClearStsCredentialsOptions(options);
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT,
+                        "token_exchange_service_uri must be specified.");
+  }
+  options->token_exchange_service_uri.assign(value);
+  value = grpc_json_get_string_property(json, "subject_token_path", nullptr);
+  if (value == nullptr) {
+    ClearStsCredentialsOptions(options);
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT,
+                        "subject_token_path must be specified.");
+  }
+  options->subject_token_path.assign(value);
+  value = grpc_json_get_string_property(json, "subject_token_type", nullptr);
+  if (value == nullptr) {
+    ClearStsCredentialsOptions(options);
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT,
+                        "subject_token_type must be specified.");
+  }
+  options->subject_token_type.assign(value);
+
+  // Optional fields.
+  value = grpc_json_get_string_property(json, "resource", nullptr);
+  if (value != nullptr) options->resource.assign(value);
+  value = grpc_json_get_string_property(json, "audience", nullptr);
+  if (value != nullptr) options->audience.assign(value);
+  value = grpc_json_get_string_property(json, "scope", nullptr);
+  if (value != nullptr) options->scope.assign(value);
+  value = grpc_json_get_string_property(json, "requested_token_type", nullptr);
+  if (value != nullptr) options->requested_token_type.assign(value);
+  value = grpc_json_get_string_property(json, "actor_token_path", nullptr);
+  if (value != nullptr) options->actor_token_path.assign(value);
+  value = grpc_json_get_string_property(json, "actor_token_type", nullptr);
+  if (value != nullptr) options->actor_token_type.assign(value);
+
+  return grpc::Status();
+}
+
+// Builds STS credentials Options from the $STS_CREDENTIALS env var.
+grpc::Status StsCredentialsOptionsFromEnv(StsCredentialsOptions* options) {
+  if (options == nullptr) {
+    return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT,
+                        "options cannot be nullptr.");
+  }
+  ClearStsCredentialsOptions(options);
+  grpc_slice json_string = grpc_empty_slice();
+  char* sts_creds_path = gpr_getenv("STS_CREDENTIALS");
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc::Status status;
+  auto cleanup = [&json_string, &sts_creds_path, &error, &status]() {
+    grpc_slice_unref_internal(json_string);
+    gpr_free(sts_creds_path);
+    GRPC_ERROR_UNREF(error);
+    return status;
+  };
+
+  if (sts_creds_path == nullptr) {
+    status = grpc::Status(grpc::StatusCode::NOT_FOUND,
+                          "STS_CREDENTIALS environment variable not set.");
+    return cleanup();
+  }
+  error = grpc_load_file(sts_creds_path, 1, &json_string);
+  if (error != GRPC_ERROR_NONE) {
+    status =
+        grpc::Status(grpc::StatusCode::NOT_FOUND, grpc_error_string(error));
+    return cleanup();
+  }
+  status = StsCredentialsOptionsFromJson(
+      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(json_string)),
+      options);
+  return cleanup();
+}
+
+// C++ to Core STS Credentials options.
+grpc_sts_credentials_options StsCredentialsCppToCoreOptions(
+    const StsCredentialsOptions& options) {
+  grpc_sts_credentials_options opts;
+  memset(&opts, 0, sizeof(opts));
+  opts.token_exchange_service_uri = options.token_exchange_service_uri.c_str();
+  opts.resource = options.resource.c_str();
+  opts.audience = options.audience.c_str();
+  opts.scope = options.scope.c_str();
+  opts.requested_token_type = options.requested_token_type.c_str();
+  opts.subject_token_path = options.subject_token_path.c_str();
+  opts.subject_token_type = options.subject_token_type.c_str();
+  opts.actor_token_path = options.actor_token_path.c_str();
+  opts.actor_token_type = options.actor_token_type.c_str();
+  return opts;
+}
+
+// Builds STS credentials.
+std::shared_ptr<CallCredentials> StsCredentials(
+    const StsCredentialsOptions& options) {
+  auto opts = StsCredentialsCppToCoreOptions(options);
+  return WrapCallCredentials(grpc_sts_credentials_create(&opts, nullptr));
+}
+
+std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin,
+    grpc_security_level min_security_level) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  const char* type = plugin->GetType();
+  grpc::MetadataCredentialsPluginWrapper* wrapper =
+      new grpc::MetadataCredentialsPluginWrapper(std::move(plugin));
+  grpc_metadata_credentials_plugin c_plugin = {
+      grpc::MetadataCredentialsPluginWrapper::GetMetadata,
+      grpc::MetadataCredentialsPluginWrapper::Destroy, wrapper, type};
+  return WrapCallCredentials(grpc_metadata_credentials_create_from_plugin(
+      c_plugin, min_security_level, nullptr));
+}
+
+// Builds ALTS Credentials given ALTS specific options
+std::shared_ptr<ChannelCredentials> AltsCredentials(
+    const AltsCredentialsOptions& options) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  grpc_alts_credentials_options* c_options =
+      grpc_alts_credentials_client_options_create();
+  for (const auto& service_account : options.target_service_accounts) {
+    grpc_alts_credentials_client_options_add_target_service_account(
+        c_options, service_account.c_str());
+  }
+  grpc_channel_credentials* c_creds = grpc_alts_credentials_create(c_options);
+  grpc_alts_credentials_options_destroy(c_options);
+  return WrapChannelCredentials(c_creds);
+}
+
+// Builds Local Credentials
+std::shared_ptr<ChannelCredentials> LocalCredentials(
+    grpc_local_connect_type type) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapChannelCredentials(grpc_local_credentials_create(type));
+}
+
+// Builds TLS Credentials given TLS options.
+std::shared_ptr<ChannelCredentials> TlsCredentials(
+    const TlsCredentialsOptions& options) {
+  return WrapChannelCredentials(
+      grpc_tls_credentials_create(options.c_credentials_options()));
+}
+
+}  // namespace experimental
+
+// Builds credentials for use when running in GCE
+std::shared_ptr<CallCredentials> GoogleComputeEngineCredentials() {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapCallCredentials(
+      grpc_google_compute_engine_credentials_create(nullptr));
+}
+
+// Builds JWT credentials.
+std::shared_ptr<CallCredentials> ServiceAccountJWTAccessCredentials(
+    const grpc::string& json_key, long token_lifetime_seconds) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  if (token_lifetime_seconds <= 0) {
+    gpr_log(GPR_ERROR,
+            "Trying to create JWTCredentials with non-positive lifetime");
+    return WrapCallCredentials(nullptr);
+  }
+  gpr_timespec lifetime =
+      gpr_time_from_seconds(token_lifetime_seconds, GPR_TIMESPAN);
+  return WrapCallCredentials(grpc_service_account_jwt_access_credentials_create(
+      json_key.c_str(), lifetime, nullptr));
+}
+
+// Builds refresh token credentials.
+std::shared_ptr<CallCredentials> GoogleRefreshTokenCredentials(
+    const grpc::string& json_refresh_token) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapCallCredentials(grpc_google_refresh_token_credentials_create(
+      json_refresh_token.c_str(), nullptr));
+}
+
+// Builds access token credentials.
+std::shared_ptr<CallCredentials> AccessTokenCredentials(
+    const grpc::string& access_token) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapCallCredentials(
+      grpc_access_token_credentials_create(access_token.c_str(), nullptr));
+}
+
+// Builds IAM credentials.
+std::shared_ptr<CallCredentials> GoogleIAMCredentials(
+    const grpc::string& authorization_token,
+    const grpc::string& authority_selector) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  return WrapCallCredentials(grpc_google_iam_credentials_create(
+      authorization_token.c_str(), authority_selector.c_str(), nullptr));
+}
+
+// Combines one channel credentials and one call credentials into a channel
+// composite credentials.
+std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
+    const std::shared_ptr<ChannelCredentials>& channel_creds,
+    const std::shared_ptr<CallCredentials>& call_creds) {
+  // Note that we are not saving shared_ptrs to the two credentials passed in
+  // here. This is OK because the underlying C objects (i.e., channel_creds and
+  // call_creds) into grpc_composite_credentials_create will see their refcounts
+  // incremented.
+  SecureChannelCredentials* s_channel_creds =
+      channel_creds->AsSecureCredentials();
+  SecureCallCredentials* s_call_creds = call_creds->AsSecureCredentials();
+  if (s_channel_creds && s_call_creds) {
+    return WrapChannelCredentials(grpc_composite_channel_credentials_create(
+        s_channel_creds->GetRawCreds(), s_call_creds->GetRawCreds(), nullptr));
+  }
+  return nullptr;
+}
+
+std::shared_ptr<CallCredentials> CompositeCallCredentials(
+    const std::shared_ptr<CallCredentials>& creds1,
+    const std::shared_ptr<CallCredentials>& creds2) {
+  SecureCallCredentials* s_creds1 = creds1->AsSecureCredentials();
+  SecureCallCredentials* s_creds2 = creds2->AsSecureCredentials();
+  if (s_creds1 != nullptr && s_creds2 != nullptr) {
+    return WrapCallCredentials(grpc_composite_call_credentials_create(
+        s_creds1->GetRawCreds(), s_creds2->GetRawCreds(), nullptr));
+  }
+  return nullptr;
+}
+
+std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin) {
+  grpc::GrpcLibraryCodegen init;  // To call grpc_init().
+  const char* type = plugin->GetType();
+  grpc::MetadataCredentialsPluginWrapper* wrapper =
+      new grpc::MetadataCredentialsPluginWrapper(std::move(plugin));
+  grpc_metadata_credentials_plugin c_plugin = {
+      grpc::MetadataCredentialsPluginWrapper::GetMetadata,
+      grpc::MetadataCredentialsPluginWrapper::Destroy, wrapper, type};
+  return WrapCallCredentials(grpc_metadata_credentials_create_from_plugin(
+      c_plugin, GRPC_PRIVACY_AND_INTEGRITY, nullptr));
+}
+
+}  // namespace grpc_impl
+
+namespace grpc {
+namespace {
+void DeleteWrapper(void* wrapper, grpc_error* /*ignored*/) {
+  MetadataCredentialsPluginWrapper* w =
+      static_cast<MetadataCredentialsPluginWrapper*>(wrapper);
+  delete w;
+}
+}  // namespace
+
+void MetadataCredentialsPluginWrapper::Destroy(void* wrapper) {
+  if (wrapper == nullptr) return;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_core::Executor::Run(GRPC_CLOSURE_CREATE(DeleteWrapper, wrapper, nullptr),
+                           GRPC_ERROR_NONE);
+}
+
+int MetadataCredentialsPluginWrapper::GetMetadata(
+    void* wrapper, grpc_auth_metadata_context context,
+    grpc_credentials_plugin_metadata_cb cb, void* user_data,
+    grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
+    size_t* num_creds_md, grpc_status_code* status,
+    const char** error_details) {
+  GPR_ASSERT(wrapper);
+  MetadataCredentialsPluginWrapper* w =
+      static_cast<MetadataCredentialsPluginWrapper*>(wrapper);
+  if (!w->plugin_) {
+    *num_creds_md = 0;
+    *status = GRPC_STATUS_OK;
+    *error_details = nullptr;
+    return 1;
+  }
+  if (w->plugin_->IsBlocking()) {
+    // The internals of context may be destroyed if GetMetadata is cancelled.
+    // Make a copy for InvokePlugin.
+    grpc_auth_metadata_context context_copy = grpc_auth_metadata_context();
+    grpc_auth_metadata_context_copy(&context, &context_copy);
+    // Asynchronous return.
+    w->thread_pool_->Add([w, context_copy, cb, user_data]() mutable {
+      w->MetadataCredentialsPluginWrapper::InvokePlugin(
+          context_copy, cb, user_data, nullptr, nullptr, nullptr, nullptr);
+      grpc_auth_metadata_context_reset(&context_copy);
+    });
+    return 0;
+  } else {
+    // Synchronous return.
+    w->InvokePlugin(context, cb, user_data, creds_md, num_creds_md, status,
+                    error_details);
+    return 1;
+  }
+}
+
+namespace {
+
+void UnrefMetadata(const std::vector<grpc_metadata>& md) {
+  for (const auto& metadatum : md) {
+    grpc_slice_unref(metadatum.key);
+    grpc_slice_unref(metadatum.value);
+  }
+}
+
+}  // namespace
+
+void MetadataCredentialsPluginWrapper::InvokePlugin(
+    grpc_auth_metadata_context context, grpc_credentials_plugin_metadata_cb cb,
+    void* user_data, grpc_metadata creds_md[4], size_t* num_creds_md,
+    grpc_status_code* status_code, const char** error_details) {
+  std::multimap<grpc::string, grpc::string> metadata;
+
+  // const_cast is safe since the SecureAuthContext only inc/dec the refcount
+  // and the object is passed as a const ref to plugin_->GetMetadata.
+  SecureAuthContext cpp_channel_auth_context(
+      const_cast<grpc_auth_context*>(context.channel_auth_context));
+
+  Status status = plugin_->GetMetadata(context.service_url, context.method_name,
+                                       cpp_channel_auth_context, &metadata);
+  std::vector<grpc_metadata> md;
+  for (auto& metadatum : metadata) {
+    grpc_metadata md_entry;
+    md_entry.key = SliceFromCopiedString(metadatum.first);
+    md_entry.value = SliceFromCopiedString(metadatum.second);
+    md_entry.flags = 0;
+    md.push_back(md_entry);
+  }
+  if (creds_md != nullptr) {
+    // Synchronous return.
+    if (md.size() > GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX) {
+      *num_creds_md = 0;
+      *status_code = GRPC_STATUS_INTERNAL;
+      *error_details = gpr_strdup(
+          "blocking plugin credentials returned too many metadata keys");
+      UnrefMetadata(md);
+    } else {
+      for (const auto& elem : md) {
+        creds_md[*num_creds_md].key = elem.key;
+        creds_md[*num_creds_md].value = elem.value;
+        creds_md[*num_creds_md].flags = elem.flags;
+        ++(*num_creds_md);
+      }
+      *status_code = static_cast<grpc_status_code>(status.error_code());
+      *error_details =
+          status.ok() ? nullptr : gpr_strdup(status.error_message().c_str());
+    }
+  } else {
+    // Asynchronous return.
+    cb(user_data, md.empty() ? nullptr : &md[0], md.size(),
+       static_cast<grpc_status_code>(status.error_code()),
+       status.error_message().c_str());
+    UnrefMetadata(md);
+  }
+}
+
+MetadataCredentialsPluginWrapper::MetadataCredentialsPluginWrapper(
+    std::unique_ptr<MetadataCredentialsPlugin> plugin)
+    : thread_pool_(CreateDefaultThreadPool()), plugin_(std::move(plugin)) {}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.h
new file mode 100644
index 0000000..2c81727
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/client/secure_credentials.h	
@@ -0,0 +1,113 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_CLIENT_SECURE_CREDENTIALS_H
+#define GRPC_INTERNAL_CPP_CLIENT_SECURE_CREDENTIALS_H
+
+#include <grpc/grpc_security.h>
+
+#include <grpcpp/security/credentials.h>
+#include <grpcpp/security/credentials_impl.h>
+#include <grpcpp/security/tls_credentials_options.h>
+#include <grpcpp/support/config.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc_impl {
+
+class Channel;
+
+class SecureChannelCredentials final : public ChannelCredentials {
+ public:
+  explicit SecureChannelCredentials(grpc_channel_credentials* c_creds);
+  ~SecureChannelCredentials() {
+    if (c_creds_ != nullptr) c_creds_->Unref();
+  }
+  grpc_channel_credentials* GetRawCreds() { return c_creds_; }
+
+  std::shared_ptr<Channel> CreateChannelImpl(
+      const grpc::string& target, const ChannelArguments& args) override;
+
+  SecureChannelCredentials* AsSecureCredentials() override { return this; }
+
+ private:
+  std::shared_ptr<Channel> CreateChannelWithInterceptors(
+      const grpc::string& target, const ChannelArguments& args,
+      std::vector<std::unique_ptr<
+          ::grpc::experimental::ClientInterceptorFactoryInterface>>
+          interceptor_creators) override;
+  grpc_channel_credentials* const c_creds_;
+};
+
+class SecureCallCredentials final : public CallCredentials {
+ public:
+  explicit SecureCallCredentials(grpc_call_credentials* c_creds);
+  ~SecureCallCredentials() {
+    if (c_creds_ != nullptr) c_creds_->Unref();
+  }
+  grpc_call_credentials* GetRawCreds() { return c_creds_; }
+
+  bool ApplyToCall(grpc_call* call) override;
+  SecureCallCredentials* AsSecureCredentials() override { return this; }
+
+ private:
+  grpc_call_credentials* const c_creds_;
+};
+
+namespace experimental {
+
+// Transforms C++ STS Credentials options to core options. The pointers of the
+// resulting core options point to the memory held by the C++ options so C++
+// options need to be kept alive until after the core credentials creation.
+grpc_sts_credentials_options StsCredentialsCppToCoreOptions(
+    const StsCredentialsOptions& options);
+
+}  // namespace experimental
+
+}  // namespace grpc_impl
+
+namespace grpc {
+
+class MetadataCredentialsPluginWrapper final : private GrpcLibraryCodegen {
+ public:
+  static void Destroy(void* wrapper);
+  static int GetMetadata(
+      void* wrapper, grpc_auth_metadata_context context,
+      grpc_credentials_plugin_metadata_cb cb, void* user_data,
+      grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
+      size_t* num_creds_md, grpc_status_code* status,
+      const char** error_details);
+
+  explicit MetadataCredentialsPluginWrapper(
+      std::unique_ptr<MetadataCredentialsPlugin> plugin);
+
+ private:
+  void InvokePlugin(
+      grpc_auth_metadata_context context,
+      grpc_credentials_plugin_metadata_cb cb, void* user_data,
+      grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
+      size_t* num_creds_md, grpc_status_code* status_code,
+      const char** error_details);
+  std::unique_ptr<ThreadPoolInterface> thread_pool_;
+  std::unique_ptr<MetadataCredentialsPlugin> plugin_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_CLIENT_SECURE_CREDENTIALS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/codegen/codegen_init.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/codegen/codegen_init.cc
new file mode 100644
index 0000000..e1e47cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/codegen/codegen_init.cc	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/grpc_library.h>
+
+/// Null-initializes the global gRPC variables for the codegen library. These
+/// stay null in the absence of grpc++ library. In this case, no gRPC
+/// features such as the ability to perform calls will be available. Trying to
+/// perform them would result in a segmentation fault when trying to deference
+/// the following nulled globals. These should be associated with actual
+/// as part of the instantiation of a \a grpc::GrpcLibraryInitializer variable.
+
+grpc::CoreCodegenInterface* grpc::g_core_codegen_interface;
+grpc::GrpcLibraryInterface* grpc::g_glip;
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/alarm.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/alarm.cc
new file mode 100644
index 0000000..d3750c9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/alarm.cc	
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/alarm.h>
+
+#include <memory>
+
+#include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+#include <grpc/support/log.h>
+#include "src/core/lib/debug/trace.h"
+
+namespace grpc_impl {
+
+namespace internal {
+class AlarmImpl : public ::grpc::internal::CompletionQueueTag {
+ public:
+  AlarmImpl() : cq_(nullptr), tag_(nullptr) {
+    gpr_ref_init(&refs_, 1);
+    grpc_timer_init_unset(&timer_);
+  }
+  ~AlarmImpl() {}
+  bool FinalizeResult(void** tag, bool* /*status*/) override {
+    *tag = tag_;
+    Unref();
+    return true;
+  }
+  void Set(::grpc::CompletionQueue* cq, gpr_timespec deadline, void* tag) {
+    grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+    grpc_core::ExecCtx exec_ctx;
+    GRPC_CQ_INTERNAL_REF(cq->cq(), "alarm");
+    cq_ = cq->cq();
+    tag_ = tag;
+    GPR_ASSERT(grpc_cq_begin_op(cq_, this));
+    GRPC_CLOSURE_INIT(
+        &on_alarm_,
+        [](void* arg, grpc_error* error) {
+          // queue the op on the completion queue
+          AlarmImpl* alarm = static_cast<AlarmImpl*>(arg);
+          alarm->Ref();
+          // Preserve the cq and reset the cq_ so that the alarm
+          // can be reset when the alarm tag is delivered.
+          grpc_completion_queue* cq = alarm->cq_;
+          alarm->cq_ = nullptr;
+          grpc_cq_end_op(
+              cq, alarm, error,
+              [](void* /*arg*/, grpc_cq_completion* /*completion*/) {}, arg,
+              &alarm->completion_);
+          GRPC_CQ_INTERNAL_UNREF(cq, "alarm");
+        },
+        this, grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&timer_, grpc_timespec_to_millis_round_up(deadline),
+                    &on_alarm_);
+  }
+  void Set(gpr_timespec deadline, std::function<void(bool)> f) {
+    grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+    grpc_core::ExecCtx exec_ctx;
+    // Don't use any CQ at all. Instead just use the timer to fire the function
+    callback_ = std::move(f);
+    Ref();
+    GRPC_CLOSURE_INIT(&on_alarm_,
+                      [](void* arg, grpc_error* error) {
+                        grpc_core::Executor::Run(
+                            GRPC_CLOSURE_CREATE(
+                                [](void* arg, grpc_error* error) {
+                                  AlarmImpl* alarm =
+                                      static_cast<AlarmImpl*>(arg);
+                                  alarm->callback_(error == GRPC_ERROR_NONE);
+                                  alarm->Unref();
+                                },
+                                arg, nullptr),
+                            error);
+                      },
+                      this, grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&timer_, grpc_timespec_to_millis_round_up(deadline),
+                    &on_alarm_);
+  }
+  void Cancel() {
+    grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+    grpc_core::ExecCtx exec_ctx;
+    grpc_timer_cancel(&timer_);
+  }
+  void Destroy() {
+    Cancel();
+    Unref();
+  }
+
+ private:
+  void Ref() { gpr_ref(&refs_); }
+  void Unref() {
+    if (gpr_unref(&refs_)) {
+      delete this;
+    }
+  }
+
+  grpc_timer timer_;
+  gpr_refcount refs_;
+  grpc_closure on_alarm_;
+  grpc_cq_completion completion_;
+  // completion queue where events about this alarm will be posted
+  grpc_completion_queue* cq_;
+  void* tag_;
+  std::function<void(bool)> callback_;
+};
+}  // namespace internal
+
+static ::grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+
+Alarm::Alarm() : alarm_(new internal::AlarmImpl()) {
+  g_gli_initializer.summon();
+}
+
+void Alarm::SetInternal(::grpc::CompletionQueue* cq, gpr_timespec deadline,
+                        void* tag) {
+  // Note that we know that alarm_ is actually an internal::AlarmImpl
+  // but we declared it as the base pointer to avoid a forward declaration
+  // or exposing core data structures in the C++ public headers.
+  // Thus it is safe to use a static_cast to the subclass here, and the
+  // C++ style guide allows us to do so in this case
+  static_cast<internal::AlarmImpl*>(alarm_)->Set(cq, deadline, tag);
+}
+
+void Alarm::SetInternal(gpr_timespec deadline, std::function<void(bool)> f) {
+  // Note that we know that alarm_ is actually an internal::AlarmImpl
+  // but we declared it as the base pointer to avoid a forward declaration
+  // or exposing core data structures in the C++ public headers.
+  // Thus it is safe to use a static_cast to the subclass here, and the
+  // C++ style guide allows us to do so in this case
+  static_cast<internal::AlarmImpl*>(alarm_)->Set(deadline, std::move(f));
+}
+
+Alarm::~Alarm() {
+  if (alarm_ != nullptr) {
+    static_cast<internal::AlarmImpl*>(alarm_)->Destroy();
+  }
+}
+
+void Alarm::Cancel() { static_cast<internal::AlarmImpl*>(alarm_)->Cancel(); }
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/auth_property_iterator.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/auth_property_iterator.cc
new file mode 100644
index 0000000..fbb18e9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/auth_property_iterator.cc	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/security/auth_context.h>
+
+#include <grpc/grpc_security.h>
+
+namespace grpc {
+
+AuthPropertyIterator::AuthPropertyIterator()
+    : property_(nullptr), ctx_(nullptr), index_(0), name_(nullptr) {}
+
+AuthPropertyIterator::AuthPropertyIterator(
+    const grpc_auth_property* property, const grpc_auth_property_iterator* iter)
+    : property_(property),
+      ctx_(iter->ctx),
+      index_(iter->index),
+      name_(iter->name) {}
+
+AuthPropertyIterator::~AuthPropertyIterator() {}
+
+AuthPropertyIterator& AuthPropertyIterator::operator++() {
+  grpc_auth_property_iterator iter = {ctx_, index_, name_};
+  property_ = grpc_auth_property_iterator_next(&iter);
+  ctx_ = iter.ctx;
+  index_ = iter.index;
+  name_ = iter.name;
+  return *this;
+}
+
+AuthPropertyIterator AuthPropertyIterator::operator++(int) {
+  AuthPropertyIterator tmp(*this);
+  operator++();
+  return tmp;
+}
+
+bool AuthPropertyIterator::operator==(const AuthPropertyIterator& rhs) const {
+  if (property_ == nullptr || rhs.property_ == nullptr) {
+    return property_ == rhs.property_;
+  } else {
+    return index_ == rhs.index_;
+  }
+}
+
+bool AuthPropertyIterator::operator!=(const AuthPropertyIterator& rhs) const {
+  return !operator==(rhs);
+}
+
+const AuthProperty AuthPropertyIterator::operator*() {
+  return std::pair<grpc::string_ref, grpc::string_ref>(
+      property_->name,
+      grpc::string_ref(property_->value, property_->value_length));
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_arguments.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_arguments.cc
new file mode 100644
index 0000000..4ef4597
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_arguments.cc	
@@ -0,0 +1,217 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpcpp/support/channel_arguments.h>
+
+#include <sstream>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/log.h>
+#include <grpcpp/grpcpp.h>
+#include <grpcpp/resource_quota.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/socket_mutator.h"
+
+namespace grpc_impl {
+
+ChannelArguments::ChannelArguments() {
+  // This will be ignored if used on the server side.
+  SetString(GRPC_ARG_PRIMARY_USER_AGENT_STRING, "grpc-c++/" + grpc::Version());
+}
+
+ChannelArguments::ChannelArguments(const ChannelArguments& other)
+    : strings_(other.strings_) {
+  args_.reserve(other.args_.size());
+  auto list_it_dst = strings_.begin();
+  auto list_it_src = other.strings_.begin();
+  for (const auto& a : other.args_) {
+    grpc_arg ap;
+    ap.type = a.type;
+    GPR_ASSERT(list_it_src->c_str() == a.key);
+    ap.key = const_cast<char*>(list_it_dst->c_str());
+    ++list_it_src;
+    ++list_it_dst;
+    switch (a.type) {
+      case GRPC_ARG_INTEGER:
+        ap.value.integer = a.value.integer;
+        break;
+      case GRPC_ARG_STRING:
+        GPR_ASSERT(list_it_src->c_str() == a.value.string);
+        ap.value.string = const_cast<char*>(list_it_dst->c_str());
+        ++list_it_src;
+        ++list_it_dst;
+        break;
+      case GRPC_ARG_POINTER:
+        ap.value.pointer = a.value.pointer;
+        ap.value.pointer.p = a.value.pointer.vtable->copy(ap.value.pointer.p);
+        break;
+    }
+    args_.push_back(ap);
+  }
+}
+
+ChannelArguments::~ChannelArguments() {
+  grpc_core::ExecCtx exec_ctx;
+  for (auto& arg : args_) {
+    if (arg.type == GRPC_ARG_POINTER) {
+      arg.value.pointer.vtable->destroy(arg.value.pointer.p);
+    }
+  }
+}
+
+void ChannelArguments::Swap(ChannelArguments& other) {
+  args_.swap(other.args_);
+  strings_.swap(other.strings_);
+}
+
+void ChannelArguments::SetCompressionAlgorithm(
+    grpc_compression_algorithm algorithm) {
+  SetInt(GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM, algorithm);
+}
+
+void ChannelArguments::SetGrpclbFallbackTimeout(int fallback_timeout) {
+  SetInt(GRPC_ARG_GRPCLB_FALLBACK_TIMEOUT_MS, fallback_timeout);
+}
+
+void ChannelArguments::SetSocketMutator(grpc_socket_mutator* mutator) {
+  if (!mutator) {
+    return;
+  }
+  grpc_arg mutator_arg = grpc_socket_mutator_to_arg(mutator);
+  bool replaced = false;
+  grpc_core::ExecCtx exec_ctx;
+  for (auto& arg : args_) {
+    if (arg.type == mutator_arg.type &&
+        grpc::string(arg.key) == grpc::string(mutator_arg.key)) {
+      GPR_ASSERT(!replaced);
+      arg.value.pointer.vtable->destroy(arg.value.pointer.p);
+      arg.value.pointer = mutator_arg.value.pointer;
+      replaced = true;
+    }
+  }
+
+  if (!replaced) {
+    strings_.push_back(grpc::string(mutator_arg.key));
+    args_.push_back(mutator_arg);
+    args_.back().key = const_cast<char*>(strings_.back().c_str());
+  }
+}
+
+// Note: a second call to this will add in front the result of the first call.
+// An example is calling this on a copy of ChannelArguments which already has a
+// prefix. The user can build up a prefix string by calling this multiple times,
+// each with more significant identifier.
+void ChannelArguments::SetUserAgentPrefix(
+    const grpc::string& user_agent_prefix) {
+  if (user_agent_prefix.empty()) {
+    return;
+  }
+  bool replaced = false;
+  auto strings_it = strings_.begin();
+  for (auto& arg : args_) {
+    ++strings_it;
+    if (arg.type == GRPC_ARG_STRING) {
+      if (grpc::string(arg.key) == GRPC_ARG_PRIMARY_USER_AGENT_STRING) {
+        GPR_ASSERT(arg.value.string == strings_it->c_str());
+        *(strings_it) = user_agent_prefix + " " + arg.value.string;
+        arg.value.string = const_cast<char*>(strings_it->c_str());
+        replaced = true;
+        break;
+      }
+      ++strings_it;
+    }
+  }
+  if (!replaced) {
+    SetString(GRPC_ARG_PRIMARY_USER_AGENT_STRING, user_agent_prefix);
+  }
+}
+
+void ChannelArguments::SetResourceQuota(
+    const grpc_impl::ResourceQuota& resource_quota) {
+  SetPointerWithVtable(GRPC_ARG_RESOURCE_QUOTA,
+                       resource_quota.c_resource_quota(),
+                       grpc_resource_quota_arg_vtable());
+}
+
+void ChannelArguments::SetMaxReceiveMessageSize(int size) {
+  SetInt(GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH, size);
+}
+
+void ChannelArguments::SetMaxSendMessageSize(int size) {
+  SetInt(GRPC_ARG_MAX_SEND_MESSAGE_LENGTH, size);
+}
+
+void ChannelArguments::SetLoadBalancingPolicyName(
+    const grpc::string& lb_policy_name) {
+  SetString(GRPC_ARG_LB_POLICY_NAME, lb_policy_name);
+}
+
+void ChannelArguments::SetServiceConfigJSON(
+    const grpc::string& service_config_json) {
+  SetString(GRPC_ARG_SERVICE_CONFIG, service_config_json);
+}
+
+void ChannelArguments::SetInt(const grpc::string& key, int value) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_INTEGER;
+  strings_.push_back(key);
+  arg.key = const_cast<char*>(strings_.back().c_str());
+  arg.value.integer = value;
+
+  args_.push_back(arg);
+}
+
+void ChannelArguments::SetPointer(const grpc::string& key, void* value) {
+  static const grpc_arg_pointer_vtable vtable = {
+      &PointerVtableMembers::Copy, &PointerVtableMembers::Destroy,
+      &PointerVtableMembers::Compare};
+  SetPointerWithVtable(key, value, &vtable);
+}
+
+void ChannelArguments::SetPointerWithVtable(
+    const grpc::string& key, void* value,
+    const grpc_arg_pointer_vtable* vtable) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  strings_.push_back(key);
+  arg.key = const_cast<char*>(strings_.back().c_str());
+  arg.value.pointer.p = vtable->copy(value);
+  arg.value.pointer.vtable = vtable;
+  args_.push_back(arg);
+}
+
+void ChannelArguments::SetString(const grpc::string& key,
+                                 const grpc::string& value) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  strings_.push_back(key);
+  arg.key = const_cast<char*>(strings_.back().c_str());
+  strings_.push_back(value);
+  arg.value.string = const_cast<char*>(strings_.back().c_str());
+
+  args_.push_back(arg);
+}
+
+void ChannelArguments::SetChannelArgs(grpc_channel_args* channel_args) const {
+  channel_args->num_args = args_.size();
+  if (channel_args->num_args > 0) {
+    channel_args->args = const_cast<grpc_arg*>(&args_[0]);
+  }
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.cc
new file mode 100644
index 0000000..8df6c7b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.cc	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <string.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/cpp/common/channel_filter.h"
+
+#include <grpcpp/impl/codegen/slice.h>
+
+namespace grpc {
+
+// MetadataBatch
+
+grpc_linked_mdelem* MetadataBatch::AddMetadata(const string& key,
+                                               const string& value) {
+  grpc_linked_mdelem* storage = new grpc_linked_mdelem;
+  storage->md = grpc_mdelem_from_slices(SliceFromCopiedString(key),
+                                        SliceFromCopiedString(value));
+  GRPC_LOG_IF_ERROR("MetadataBatch::AddMetadata",
+                    grpc_metadata_batch_link_head(batch_, storage));
+  return storage;
+}
+
+// ChannelData
+
+void ChannelData::StartTransportOp(grpc_channel_element* elem,
+                                   TransportOp* op) {
+  grpc_channel_next_op(elem, op->op());
+}
+
+void ChannelData::GetInfo(grpc_channel_element* elem,
+                          const grpc_channel_info* channel_info) {
+  grpc_channel_next_get_info(elem, channel_info);
+}
+
+// CallData
+
+void CallData::StartTransportStreamOpBatch(grpc_call_element* elem,
+                                           TransportStreamOpBatch* op) {
+  grpc_call_next_op(elem, op->op());
+}
+
+void CallData::SetPollsetOrPollsetSet(grpc_call_element* elem,
+                                      grpc_polling_entity* pollent) {
+  grpc_call_stack_ignore_set_pollset_or_pollset_set(elem, pollent);
+}
+
+// internal code used by RegisterChannelFilter()
+
+namespace internal {
+
+// Note: Implicitly initialized to nullptr due to static lifetime.
+std::vector<FilterRecord>* channel_filters;
+
+namespace {
+
+bool MaybeAddFilter(grpc_channel_stack_builder* builder, void* arg) {
+  const FilterRecord& filter = *static_cast<FilterRecord*>(arg);
+  if (filter.include_filter) {
+    const grpc_channel_args* args =
+        grpc_channel_stack_builder_get_channel_arguments(builder);
+    if (!filter.include_filter(*args)) return true;
+  }
+  return grpc_channel_stack_builder_prepend_filter(builder, &filter.filter,
+                                                   nullptr, nullptr);
+}
+
+}  // namespace
+
+void ChannelFilterPluginInit() {
+  for (size_t i = 0; i < channel_filters->size(); ++i) {
+    FilterRecord& filter = (*channel_filters)[i];
+    grpc_channel_init_register_stage(filter.stack_type, filter.priority,
+                                     MaybeAddFilter, (void*)&filter);
+  }
+}
+
+void ChannelFilterPluginShutdown() {}
+
+}  // namespace internal
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.h
new file mode 100644
index 0000000..5ce720b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/channel_filter.h	
@@ -0,0 +1,402 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCXX_CHANNEL_FILTER_H
+#define GRPCXX_CHANNEL_FILTER_H
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpcpp/impl/codegen/config.h>
+
+#include <functional>
+#include <vector>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/metadata_batch.h"
+
+/// An interface to define filters.
+///
+/// To define a filter, implement a subclass of each of \c CallData and
+/// \c ChannelData. Then register the filter using something like this:
+/// \code{.cpp}
+///   RegisterChannelFilter<MyChannelDataSubclass, MyCallDataSubclass>(
+///       "name-of-filter", GRPC_SERVER_CHANNEL, INT_MAX, nullptr);
+/// \endcode
+
+namespace grpc {
+
+/// A C++ wrapper for the \c grpc_metadata_batch struct.
+class MetadataBatch {
+ public:
+  /// Borrows a pointer to \a batch, but does NOT take ownership.
+  /// The caller must ensure that \a batch continues to exist for as
+  /// long as the MetadataBatch object does.
+  explicit MetadataBatch(grpc_metadata_batch* batch) : batch_(batch) {}
+
+  grpc_metadata_batch* batch() const { return batch_; }
+
+  /// Adds metadata and returns the newly allocated storage.
+  /// The caller takes ownership of the result, which must exist for the
+  /// lifetime of the gRPC call.
+  grpc_linked_mdelem* AddMetadata(const string& key, const string& value);
+
+  class const_iterator : public std::iterator<std::bidirectional_iterator_tag,
+                                              const grpc_mdelem> {
+   public:
+    const grpc_mdelem& operator*() const { return elem_->md; }
+    const grpc_mdelem operator->() const { return elem_->md; }
+
+    const_iterator& operator++() {
+      elem_ = elem_->next;
+      return *this;
+    }
+    const_iterator operator++(int) {
+      const_iterator tmp(*this);
+      operator++();
+      return tmp;
+    }
+    const_iterator& operator--() {
+      elem_ = elem_->prev;
+      return *this;
+    }
+    const_iterator operator--(int) {
+      const_iterator tmp(*this);
+      operator--();
+      return tmp;
+    }
+
+    bool operator==(const const_iterator& other) const {
+      return elem_ == other.elem_;
+    }
+    bool operator!=(const const_iterator& other) const {
+      return elem_ != other.elem_;
+    }
+
+   private:
+    friend class MetadataBatch;
+    explicit const_iterator(grpc_linked_mdelem* elem) : elem_(elem) {}
+
+    grpc_linked_mdelem* elem_;
+  };
+
+  const_iterator begin() const { return const_iterator(batch_->list.head); }
+  const_iterator end() const { return const_iterator(nullptr); }
+
+ private:
+  grpc_metadata_batch* batch_;  // Not owned.
+};
+
+/// A C++ wrapper for the \c grpc_transport_op struct.
+class TransportOp {
+ public:
+  /// Borrows a pointer to \a op, but does NOT take ownership.
+  /// The caller must ensure that \a op continues to exist for as
+  /// long as the TransportOp object does.
+  explicit TransportOp(grpc_transport_op* op) : op_(op) {}
+
+  grpc_transport_op* op() const { return op_; }
+
+  // TODO(roth): Add a C++ wrapper for grpc_error?
+  grpc_error* disconnect_with_error() const {
+    return op_->disconnect_with_error;
+  }
+  bool send_goaway() const { return op_->goaway_error != GRPC_ERROR_NONE; }
+
+  // TODO(roth): Add methods for additional fields as needed.
+
+ private:
+  grpc_transport_op* op_;  // Not owned.
+};
+
+/// A C++ wrapper for the \c grpc_transport_stream_op_batch struct.
+class TransportStreamOpBatch {
+ public:
+  /// Borrows a pointer to \a op, but does NOT take ownership.
+  /// The caller must ensure that \a op continues to exist for as
+  /// long as the TransportStreamOpBatch object does.
+  explicit TransportStreamOpBatch(grpc_transport_stream_op_batch* op)
+      : op_(op),
+        send_initial_metadata_(
+            op->send_initial_metadata
+                ? op->payload->send_initial_metadata.send_initial_metadata
+                : nullptr),
+        send_trailing_metadata_(
+            op->send_trailing_metadata
+                ? op->payload->send_trailing_metadata.send_trailing_metadata
+                : nullptr),
+        recv_initial_metadata_(
+            op->recv_initial_metadata
+                ? op->payload->recv_initial_metadata.recv_initial_metadata
+                : nullptr),
+        recv_trailing_metadata_(
+            op->recv_trailing_metadata
+                ? op->payload->recv_trailing_metadata.recv_trailing_metadata
+                : nullptr) {}
+
+  grpc_transport_stream_op_batch* op() const { return op_; }
+
+  grpc_closure* on_complete() const { return op_->on_complete; }
+  void set_on_complete(grpc_closure* closure) { op_->on_complete = closure; }
+
+  MetadataBatch* send_initial_metadata() {
+    return op_->send_initial_metadata ? &send_initial_metadata_ : nullptr;
+  }
+  MetadataBatch* send_trailing_metadata() {
+    return op_->send_trailing_metadata ? &send_trailing_metadata_ : nullptr;
+  }
+  MetadataBatch* recv_initial_metadata() {
+    return op_->recv_initial_metadata ? &recv_initial_metadata_ : nullptr;
+  }
+  MetadataBatch* recv_trailing_metadata() {
+    return op_->recv_trailing_metadata ? &recv_trailing_metadata_ : nullptr;
+  }
+
+  uint32_t* send_initial_metadata_flags() const {
+    return op_->send_initial_metadata ? &op_->payload->send_initial_metadata
+                                             .send_initial_metadata_flags
+                                      : nullptr;
+  }
+
+  grpc_closure* recv_initial_metadata_ready() const {
+    return op_->recv_initial_metadata
+               ? op_->payload->recv_initial_metadata.recv_initial_metadata_ready
+               : nullptr;
+  }
+  void set_recv_initial_metadata_ready(grpc_closure* closure) {
+    op_->payload->recv_initial_metadata.recv_initial_metadata_ready = closure;
+  }
+
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* send_message() const {
+    return op_->send_message ? &op_->payload->send_message.send_message
+                             : nullptr;
+  }
+  void set_send_message(
+      grpc_core::OrphanablePtr<grpc_core::ByteStream> send_message) {
+    op_->send_message = true;
+    op_->payload->send_message.send_message = std::move(send_message);
+  }
+
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message() const {
+    return op_->recv_message ? op_->payload->recv_message.recv_message
+                             : nullptr;
+  }
+  void set_recv_message(
+      grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message) {
+    op_->recv_message = true;
+    op_->payload->recv_message.recv_message = recv_message;
+  }
+
+  census_context* get_census_context() const {
+    return static_cast<census_context*>(
+        op_->payload->context[GRPC_CONTEXT_TRACING].value);
+  }
+
+  const gpr_atm* get_peer_string() const {
+    if (op_->send_initial_metadata &&
+        op_->payload->send_initial_metadata.peer_string != nullptr) {
+      return op_->payload->send_initial_metadata.peer_string;
+    } else if (op_->recv_initial_metadata &&
+               op_->payload->recv_initial_metadata.peer_string != nullptr) {
+      return op_->payload->recv_initial_metadata.peer_string;
+    } else {
+      return nullptr;
+    }
+  }
+
+ private:
+  grpc_transport_stream_op_batch* op_;  // Not owned.
+  MetadataBatch send_initial_metadata_;
+  MetadataBatch send_trailing_metadata_;
+  MetadataBatch recv_initial_metadata_;
+  MetadataBatch recv_trailing_metadata_;
+};
+
+/// Represents channel data.
+class ChannelData {
+ public:
+  ChannelData() {}
+  virtual ~ChannelData() {}
+
+  // TODO(roth): Come up with a more C++-like API for the channel element.
+
+  /// Initializes the channel data.
+  virtual grpc_error* Init(grpc_channel_element* /*elem*/,
+                           grpc_channel_element_args* /*args*/) {
+    return GRPC_ERROR_NONE;
+  }
+
+  // Called before destruction.
+  virtual void Destroy(grpc_channel_element* /*elem*/) {}
+
+  virtual void StartTransportOp(grpc_channel_element* elem, TransportOp* op);
+
+  virtual void GetInfo(grpc_channel_element* elem,
+                       const grpc_channel_info* channel_info);
+};
+
+/// Represents call data.
+class CallData {
+ public:
+  CallData() {}
+  virtual ~CallData() {}
+
+  // TODO(roth): Come up with a more C++-like API for the call element.
+
+  /// Initializes the call data.
+  virtual grpc_error* Init(grpc_call_element* /*elem*/,
+                           const grpc_call_element_args* /*args*/) {
+    return GRPC_ERROR_NONE;
+  }
+
+  // Called before destruction.
+  virtual void Destroy(grpc_call_element* /*elem*/,
+                       const grpc_call_final_info* /*final_info*/,
+                       grpc_closure* /*then_call_closure*/) {}
+
+  /// Starts a new stream operation.
+  virtual void StartTransportStreamOpBatch(grpc_call_element* elem,
+                                           TransportStreamOpBatch* op);
+
+  /// Sets a pollset or pollset set.
+  virtual void SetPollsetOrPollsetSet(grpc_call_element* elem,
+                                      grpc_polling_entity* pollent);
+};
+
+namespace internal {
+
+// Defines static members for passing to C core.
+// Members of this class correspond to the members of the C
+// grpc_channel_filter struct.
+template <typename ChannelDataType, typename CallDataType>
+class ChannelFilter final {
+ public:
+  static const size_t channel_data_size = sizeof(ChannelDataType);
+
+  static grpc_error* InitChannelElement(grpc_channel_element* elem,
+                                        grpc_channel_element_args* args) {
+    // Construct the object in the already-allocated memory.
+    ChannelDataType* channel_data = new (elem->channel_data) ChannelDataType();
+    return channel_data->Init(elem, args);
+  }
+
+  static void DestroyChannelElement(grpc_channel_element* elem) {
+    ChannelDataType* channel_data =
+        static_cast<ChannelDataType*>(elem->channel_data);
+    channel_data->Destroy(elem);
+    channel_data->~ChannelDataType();
+  }
+
+  static void StartTransportOp(grpc_channel_element* elem,
+                               grpc_transport_op* op) {
+    ChannelDataType* channel_data =
+        static_cast<ChannelDataType*>(elem->channel_data);
+    TransportOp op_wrapper(op);
+    channel_data->StartTransportOp(elem, &op_wrapper);
+  }
+
+  static void GetChannelInfo(grpc_channel_element* elem,
+                             const grpc_channel_info* channel_info) {
+    ChannelDataType* channel_data =
+        static_cast<ChannelDataType*>(elem->channel_data);
+    channel_data->GetInfo(elem, channel_info);
+  }
+
+  static const size_t call_data_size = sizeof(CallDataType);
+
+  static grpc_error* InitCallElement(grpc_call_element* elem,
+                                     const grpc_call_element_args* args) {
+    // Construct the object in the already-allocated memory.
+    CallDataType* call_data = new (elem->call_data) CallDataType();
+    return call_data->Init(elem, args);
+  }
+
+  static void DestroyCallElement(grpc_call_element* elem,
+                                 const grpc_call_final_info* final_info,
+                                 grpc_closure* then_call_closure) {
+    CallDataType* call_data = static_cast<CallDataType*>(elem->call_data);
+    call_data->Destroy(elem, final_info, then_call_closure);
+    call_data->~CallDataType();
+  }
+
+  static void StartTransportStreamOpBatch(grpc_call_element* elem,
+                                          grpc_transport_stream_op_batch* op) {
+    CallDataType* call_data = static_cast<CallDataType*>(elem->call_data);
+    TransportStreamOpBatch op_wrapper(op);
+    call_data->StartTransportStreamOpBatch(elem, &op_wrapper);
+  }
+
+  static void SetPollsetOrPollsetSet(grpc_call_element* elem,
+                                     grpc_polling_entity* pollent) {
+    CallDataType* call_data = static_cast<CallDataType*>(elem->call_data);
+    call_data->SetPollsetOrPollsetSet(elem, pollent);
+  }
+};
+
+struct FilterRecord {
+  grpc_channel_stack_type stack_type;
+  int priority;
+  std::function<bool(const grpc_channel_args&)> include_filter;
+  grpc_channel_filter filter;
+};
+extern std::vector<FilterRecord>* channel_filters;
+
+void ChannelFilterPluginInit();
+void ChannelFilterPluginShutdown();
+
+}  // namespace internal
+
+/// Registers a new filter.
+/// Must be called by only one thread at a time.
+/// The \a include_filter argument specifies a function that will be called
+/// to determine at run-time whether or not to add the filter. If the
+/// value is nullptr, the filter will be added unconditionally.
+/// If the channel stack type is GRPC_CLIENT_SUBCHANNEL, the caller should
+/// ensure that subchannels with different filter lists will always have
+/// different channel args. This requires setting a channel arg in case the
+/// registration function relies on some condition other than channel args to
+/// decide whether to add a filter or not.
+template <typename ChannelDataType, typename CallDataType>
+void RegisterChannelFilter(
+    const char* name, grpc_channel_stack_type stack_type, int priority,
+    std::function<bool(const grpc_channel_args&)> include_filter) {
+  // If we haven't been called before, initialize channel_filters and
+  // call grpc_register_plugin().
+  if (internal::channel_filters == nullptr) {
+    grpc_register_plugin(internal::ChannelFilterPluginInit,
+                         internal::ChannelFilterPluginShutdown);
+    internal::channel_filters = new std::vector<internal::FilterRecord>();
+  }
+  // Add an entry to channel_filters. The filter will be added when the
+  // C-core initialization code calls ChannelFilterPluginInit().
+  typedef internal::ChannelFilter<ChannelDataType, CallDataType> FilterType;
+  internal::FilterRecord filter_record = {
+      stack_type,
+      priority,
+      include_filter,
+      {FilterType::StartTransportStreamOpBatch, FilterType::StartTransportOp,
+       FilterType::call_data_size, FilterType::InitCallElement,
+       FilterType::SetPollsetOrPollsetSet, FilterType::DestroyCallElement,
+       FilterType::channel_data_size, FilterType::InitChannelElement,
+       FilterType::DestroyChannelElement, FilterType::GetChannelInfo, name}};
+  internal::channel_filters->push_back(filter_record);
+}
+
+}  // namespace grpc
+
+#endif  // GRPCXX_CHANNEL_FILTER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/completion_queue_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/completion_queue_cc.cc
new file mode 100644
index 0000000..93f5f4c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/completion_queue_cc.cc	
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/completion_queue.h>
+
+#include <memory>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/time.h>
+
+namespace grpc_impl {
+
+static ::grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+
+// 'CompletionQueue' constructor can safely call GrpcLibraryCodegen(false) here
+// i.e not have GrpcLibraryCodegen call grpc_init(). This is because, to create
+// a 'grpc_completion_queue' instance (which is being passed as the input to
+// this constructor), one must have already called grpc_init().
+CompletionQueue::CompletionQueue(grpc_completion_queue* take)
+    : GrpcLibraryCodegen(false), cq_(take) {
+  InitialAvalanching();
+}
+
+void CompletionQueue::Shutdown() {
+  g_gli_initializer.summon();
+#ifndef NDEBUG
+  if (!ServerListEmpty()) {
+    gpr_log(GPR_ERROR,
+            "CompletionQueue shutdown being shutdown before its server.");
+  }
+#endif
+  CompleteAvalanching();
+}
+
+CompletionQueue::NextStatus CompletionQueue::AsyncNextInternal(
+    void** tag, bool* ok, gpr_timespec deadline) {
+  for (;;) {
+    auto ev = grpc_completion_queue_next(cq_, deadline, nullptr);
+    switch (ev.type) {
+      case GRPC_QUEUE_TIMEOUT:
+        return TIMEOUT;
+      case GRPC_QUEUE_SHUTDOWN:
+        return SHUTDOWN;
+      case GRPC_OP_COMPLETE:
+        auto core_cq_tag =
+            static_cast<::grpc::internal::CompletionQueueTag*>(ev.tag);
+        *ok = ev.success != 0;
+        *tag = core_cq_tag;
+        if (core_cq_tag->FinalizeResult(tag, ok)) {
+          return GOT_EVENT;
+        }
+        break;
+    }
+  }
+}
+
+CompletionQueue::CompletionQueueTLSCache::CompletionQueueTLSCache(
+    CompletionQueue* cq)
+    : cq_(cq), flushed_(false) {
+  grpc_completion_queue_thread_local_cache_init(cq_->cq_);
+}
+
+CompletionQueue::CompletionQueueTLSCache::~CompletionQueueTLSCache() {
+  GPR_ASSERT(flushed_);
+}
+
+bool CompletionQueue::CompletionQueueTLSCache::Flush(void** tag, bool* ok) {
+  int res = 0;
+  void* res_tag;
+  flushed_ = true;
+  if (grpc_completion_queue_thread_local_cache_flush(cq_->cq_, &res_tag,
+                                                     &res)) {
+    auto core_cq_tag =
+        static_cast<::grpc::internal::CompletionQueueTag*>(res_tag);
+    *ok = res == 1;
+    if (core_cq_tag->FinalizeResult(tag, ok)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/core_codegen.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/core_codegen.cc
new file mode 100644
index 0000000..75383ed
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/core_codegen.cc	
@@ -0,0 +1,240 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/codegen/core_codegen.h>
+
+#include <stdlib.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
+#include <grpc/support/sync.h>
+#include <grpcpp/support/config.h>
+
+#include "src/core/lib/profiling/timers.h"
+
+struct grpc_byte_buffer;
+
+namespace grpc {
+
+const grpc_completion_queue_factory*
+CoreCodegen::grpc_completion_queue_factory_lookup(
+    const grpc_completion_queue_attributes* attributes) {
+  return ::grpc_completion_queue_factory_lookup(attributes);
+}
+
+grpc_completion_queue* CoreCodegen::grpc_completion_queue_create(
+    const grpc_completion_queue_factory* factory,
+    const grpc_completion_queue_attributes* attributes, void* reserved) {
+  return ::grpc_completion_queue_create(factory, attributes, reserved);
+}
+
+grpc_completion_queue* CoreCodegen::grpc_completion_queue_create_for_next(
+    void* reserved) {
+  return ::grpc_completion_queue_create_for_next(reserved);
+}
+
+grpc_completion_queue* CoreCodegen::grpc_completion_queue_create_for_pluck(
+    void* reserved) {
+  return ::grpc_completion_queue_create_for_pluck(reserved);
+}
+
+void CoreCodegen::grpc_completion_queue_shutdown(grpc_completion_queue* cq) {
+  ::grpc_completion_queue_shutdown(cq);
+}
+
+void CoreCodegen::grpc_completion_queue_destroy(grpc_completion_queue* cq) {
+  ::grpc_completion_queue_destroy(cq);
+}
+
+grpc_event CoreCodegen::grpc_completion_queue_pluck(grpc_completion_queue* cq,
+                                                    void* tag,
+                                                    gpr_timespec deadline,
+                                                    void* reserved) {
+  return ::grpc_completion_queue_pluck(cq, tag, deadline, reserved);
+}
+
+void* CoreCodegen::gpr_malloc(size_t size) { return ::gpr_malloc(size); }
+
+void CoreCodegen::gpr_free(void* p) { return ::gpr_free(p); }
+
+void CoreCodegen::grpc_init() { ::grpc_init(); }
+void CoreCodegen::grpc_shutdown() { ::grpc_shutdown(); }
+
+void CoreCodegen::gpr_mu_init(gpr_mu* mu) { ::gpr_mu_init(mu); }
+void CoreCodegen::gpr_mu_destroy(gpr_mu* mu) { ::gpr_mu_destroy(mu); }
+void CoreCodegen::gpr_mu_lock(gpr_mu* mu) { ::gpr_mu_lock(mu); }
+void CoreCodegen::gpr_mu_unlock(gpr_mu* mu) { ::gpr_mu_unlock(mu); }
+void CoreCodegen::gpr_cv_init(gpr_cv* cv) { ::gpr_cv_init(cv); }
+void CoreCodegen::gpr_cv_destroy(gpr_cv* cv) { ::gpr_cv_destroy(cv); }
+int CoreCodegen::gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
+                             gpr_timespec abs_deadline) {
+  return ::gpr_cv_wait(cv, mu, abs_deadline);
+}
+void CoreCodegen::gpr_cv_signal(gpr_cv* cv) { ::gpr_cv_signal(cv); }
+void CoreCodegen::gpr_cv_broadcast(gpr_cv* cv) { ::gpr_cv_broadcast(cv); }
+
+grpc_byte_buffer* CoreCodegen::grpc_byte_buffer_copy(grpc_byte_buffer* bb) {
+  return ::grpc_byte_buffer_copy(bb);
+}
+
+void CoreCodegen::grpc_byte_buffer_destroy(grpc_byte_buffer* bb) {
+  ::grpc_byte_buffer_destroy(bb);
+}
+
+size_t CoreCodegen::grpc_byte_buffer_length(grpc_byte_buffer* bb) {
+  return ::grpc_byte_buffer_length(bb);
+}
+
+grpc_call_error CoreCodegen::grpc_call_start_batch(grpc_call* call,
+                                                   const grpc_op* ops,
+                                                   size_t nops, void* tag,
+                                                   void* reserved) {
+  return ::grpc_call_start_batch(call, ops, nops, tag, reserved);
+}
+
+grpc_call_error CoreCodegen::grpc_call_cancel_with_status(
+    grpc_call* call, grpc_status_code status, const char* description,
+    void* reserved) {
+  return ::grpc_call_cancel_with_status(call, status, description, reserved);
+}
+void CoreCodegen::grpc_call_ref(grpc_call* call) { ::grpc_call_ref(call); }
+void CoreCodegen::grpc_call_unref(grpc_call* call) { ::grpc_call_unref(call); }
+void* CoreCodegen::grpc_call_arena_alloc(grpc_call* call, size_t length) {
+  return ::grpc_call_arena_alloc(call, length);
+}
+const char* CoreCodegen::grpc_call_error_to_string(grpc_call_error error) {
+  return ::grpc_call_error_to_string(error);
+}
+
+int CoreCodegen::grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
+                                              grpc_byte_buffer* buffer) {
+  return ::grpc_byte_buffer_reader_init(reader, buffer);
+}
+
+void CoreCodegen::grpc_byte_buffer_reader_destroy(
+    grpc_byte_buffer_reader* reader) {
+  ::grpc_byte_buffer_reader_destroy(reader);
+}
+
+int CoreCodegen::grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
+                                              grpc_slice* slice) {
+  return ::grpc_byte_buffer_reader_next(reader, slice);
+}
+
+int CoreCodegen::grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
+                                              grpc_slice** slice) {
+  return ::grpc_byte_buffer_reader_peek(reader, slice);
+}
+
+grpc_byte_buffer* CoreCodegen::grpc_raw_byte_buffer_create(grpc_slice* slice,
+                                                           size_t nslices) {
+  return ::grpc_raw_byte_buffer_create(slice, nslices);
+}
+
+grpc_slice CoreCodegen::grpc_slice_new_with_user_data(void* p, size_t len,
+                                                      void (*destroy)(void*),
+                                                      void* user_data) {
+  return ::grpc_slice_new_with_user_data(p, len, destroy, user_data);
+}
+
+grpc_slice CoreCodegen::grpc_slice_new_with_len(void* p, size_t len,
+                                                void (*destroy)(void*,
+                                                                size_t)) {
+  return ::grpc_slice_new_with_len(p, len, destroy);
+}
+
+grpc_slice CoreCodegen::grpc_empty_slice() { return ::grpc_empty_slice(); }
+
+grpc_slice CoreCodegen::grpc_slice_malloc(size_t length) {
+  return ::grpc_slice_malloc(length);
+}
+
+void CoreCodegen::grpc_slice_unref(grpc_slice slice) {
+  ::grpc_slice_unref(slice);
+}
+
+grpc_slice CoreCodegen::grpc_slice_ref(grpc_slice slice) {
+  return ::grpc_slice_ref(slice);
+}
+
+grpc_slice CoreCodegen::grpc_slice_split_tail(grpc_slice* s, size_t split) {
+  return ::grpc_slice_split_tail(s, split);
+}
+
+grpc_slice CoreCodegen::grpc_slice_split_head(grpc_slice* s, size_t split) {
+  return ::grpc_slice_split_head(s, split);
+}
+
+grpc_slice CoreCodegen::grpc_slice_sub(grpc_slice s, size_t begin, size_t end) {
+  return ::grpc_slice_sub(s, begin, end);
+}
+
+grpc_slice CoreCodegen::grpc_slice_from_static_buffer(const void* buffer,
+                                                      size_t length) {
+  return ::grpc_slice_from_static_buffer(buffer, length);
+}
+
+grpc_slice CoreCodegen::grpc_slice_from_copied_buffer(const void* buffer,
+                                                      size_t length) {
+  return ::grpc_slice_from_copied_buffer(static_cast<const char*>(buffer),
+                                         length);
+}
+
+void CoreCodegen::grpc_slice_buffer_add(grpc_slice_buffer* sb,
+                                        grpc_slice slice) {
+  ::grpc_slice_buffer_add(sb, slice);
+}
+
+void CoreCodegen::grpc_slice_buffer_pop(grpc_slice_buffer* sb) {
+  ::grpc_slice_buffer_pop(sb);
+}
+
+void CoreCodegen::grpc_metadata_array_init(grpc_metadata_array* array) {
+  ::grpc_metadata_array_init(array);
+}
+
+void CoreCodegen::grpc_metadata_array_destroy(grpc_metadata_array* array) {
+  ::grpc_metadata_array_destroy(array);
+}
+
+const Status& CoreCodegen::ok() { return grpc::Status::OK; }
+
+const Status& CoreCodegen::cancelled() { return grpc::Status::CANCELLED; }
+
+gpr_timespec CoreCodegen::gpr_inf_future(gpr_clock_type type) {
+  return ::gpr_inf_future(type);
+}
+
+gpr_timespec CoreCodegen::gpr_time_0(gpr_clock_type type) {
+  return ::gpr_time_0(type);
+}
+
+void CoreCodegen::assert_fail(const char* failed_assertion, const char* file,
+                              int line) {
+  gpr_log(file, line, GPR_LOG_SEVERITY_ERROR, "assertion failed: %s",
+          failed_assertion);
+  abort();
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/resource_quota_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/resource_quota_cc.cc
new file mode 100644
index 0000000..4fab297
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/resource_quota_cc.cc	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpcpp/resource_quota.h>
+
+namespace grpc_impl {
+
+ResourceQuota::ResourceQuota() : impl_(grpc_resource_quota_create(nullptr)) {}
+
+ResourceQuota::ResourceQuota(const grpc::string& name)
+    : impl_(grpc_resource_quota_create(name.c_str())) {}
+
+ResourceQuota::~ResourceQuota() { grpc_resource_quota_unref(impl_); }
+
+ResourceQuota& ResourceQuota::Resize(size_t new_size) {
+  grpc_resource_quota_resize(impl_, new_size);
+  return *this;
+}
+
+ResourceQuota& ResourceQuota::SetMaxThreads(int new_max_threads) {
+  grpc_resource_quota_set_max_threads(impl_, new_max_threads);
+  return *this;
+}
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/rpc_method.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/rpc_method.cc
new file mode 100644
index 0000000..a47dd3e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/rpc_method.cc	
@@ -0,0 +1,21 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/rpc_method.h>
+
+namespace grpc {}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.cc
new file mode 100644
index 0000000..7a2b5af
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.cc	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/common/secure_auth_context.h"
+
+#include <grpc/grpc_security.h>
+
+namespace grpc {
+
+std::vector<grpc::string_ref> SecureAuthContext::GetPeerIdentity() const {
+  if (ctx_ == nullptr) {
+    return std::vector<grpc::string_ref>();
+  }
+  grpc_auth_property_iterator iter =
+      grpc_auth_context_peer_identity(ctx_.get());
+  std::vector<grpc::string_ref> identity;
+  const grpc_auth_property* property = nullptr;
+  while ((property = grpc_auth_property_iterator_next(&iter))) {
+    identity.push_back(
+        grpc::string_ref(property->value, property->value_length));
+  }
+  return identity;
+}
+
+grpc::string SecureAuthContext::GetPeerIdentityPropertyName() const {
+  if (ctx_ == nullptr) {
+    return "";
+  }
+  const char* name = grpc_auth_context_peer_identity_property_name(ctx_.get());
+  return name == nullptr ? "" : name;
+}
+
+std::vector<grpc::string_ref> SecureAuthContext::FindPropertyValues(
+    const grpc::string& name) const {
+  if (ctx_ == nullptr) {
+    return std::vector<grpc::string_ref>();
+  }
+  grpc_auth_property_iterator iter =
+      grpc_auth_context_find_properties_by_name(ctx_.get(), name.c_str());
+  const grpc_auth_property* property = nullptr;
+  std::vector<grpc::string_ref> values;
+  while ((property = grpc_auth_property_iterator_next(&iter))) {
+    values.push_back(grpc::string_ref(property->value, property->value_length));
+  }
+  return values;
+}
+
+AuthPropertyIterator SecureAuthContext::begin() const {
+  if (ctx_ != nullptr) {
+    grpc_auth_property_iterator iter =
+        grpc_auth_context_property_iterator(ctx_.get());
+    const grpc_auth_property* property =
+        grpc_auth_property_iterator_next(&iter);
+    return AuthPropertyIterator(property, &iter);
+  } else {
+    return end();
+  }
+}
+
+AuthPropertyIterator SecureAuthContext::end() const {
+  return AuthPropertyIterator();
+}
+
+void SecureAuthContext::AddProperty(const grpc::string& key,
+                                    const grpc::string_ref& value) {
+  if (ctx_ == nullptr) return;
+  grpc_auth_context_add_property(ctx_.get(), key.c_str(), value.data(),
+                                 value.size());
+}
+
+bool SecureAuthContext::SetPeerIdentityPropertyName(const grpc::string& name) {
+  if (ctx_ == nullptr) return false;
+  return grpc_auth_context_set_peer_identity_property_name(ctx_.get(),
+                                                           name.c_str()) != 0;
+}
+
+bool SecureAuthContext::IsPeerAuthenticated() const {
+  if (ctx_ == nullptr) return false;
+  return grpc_auth_context_peer_is_authenticated(ctx_.get()) != 0;
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.h
new file mode 100644
index 0000000..2e8f793
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_auth_context.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H
+#define GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H
+
+#include <grpcpp/security/auth_context.h>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+
+namespace grpc {
+
+class SecureAuthContext final : public AuthContext {
+ public:
+  explicit SecureAuthContext(grpc_auth_context* ctx)
+      : ctx_(ctx != nullptr ? ctx->Ref() : nullptr) {}
+
+  ~SecureAuthContext() override = default;
+
+  bool IsPeerAuthenticated() const override;
+
+  std::vector<grpc::string_ref> GetPeerIdentity() const override;
+
+  grpc::string GetPeerIdentityPropertyName() const override;
+
+  std::vector<grpc::string_ref> FindPropertyValues(
+      const grpc::string& name) const override;
+
+  AuthPropertyIterator begin() const override;
+
+  AuthPropertyIterator end() const override;
+
+  void AddProperty(const grpc::string& key,
+                   const grpc::string_ref& value) override;
+
+  virtual bool SetPeerIdentityPropertyName(const grpc::string& name) override;
+
+ private:
+  grpc_core::RefCountedPtr<grpc_auth_context> ctx_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_COMMON_SECURE_AUTH_CONTEXT_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_channel_arguments.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_channel_arguments.cc
new file mode 100644
index 0000000..e5d03cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_channel_arguments.cc	
@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/support/channel_arguments.h>
+
+#include <grpc/grpc_security.h>
+#include "src/core/lib/channel/channel_args.h"
+
+namespace grpc_impl {
+
+void ChannelArguments::SetSslTargetNameOverride(const grpc::string& name) {
+  SetString(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG, name);
+}
+
+grpc::string ChannelArguments::GetSslTargetNameOverride() const {
+  for (unsigned int i = 0; i < args_.size(); i++) {
+    if (grpc::string(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == args_[i].key) {
+      return args_[i].value.string;
+    }
+  }
+  return "";
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_create_auth_context.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_create_auth_context.cc
new file mode 100644
index 0000000..908c466
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/secure_create_auth_context.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <memory>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpcpp/security/auth_context.h>
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/cpp/common/secure_auth_context.h"
+
+namespace grpc {
+
+std::shared_ptr<const AuthContext> CreateAuthContext(grpc_call* call) {
+  if (call == nullptr) {
+    return std::shared_ptr<const AuthContext>();
+  }
+  grpc_core::RefCountedPtr<grpc_auth_context> ctx(grpc_call_auth_context(call));
+  return std::make_shared<SecureAuthContext>(ctx.get());
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options.cc
new file mode 100644
index 0000000..1c65ea6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options.cc	
@@ -0,0 +1,326 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/alloc.h>
+#include <grpcpp/security/tls_credentials_options.h>
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+#include "src/cpp/common/tls_credentials_options_util.h"
+
+namespace grpc_impl {
+namespace experimental {
+
+/** TLS key materials config API implementation **/
+void TlsKeyMaterialsConfig::set_pem_root_certs(
+    const grpc::string& pem_root_certs) {
+  pem_root_certs_ = pem_root_certs;
+}
+
+void TlsKeyMaterialsConfig::add_pem_key_cert_pair(
+    const PemKeyCertPair& pem_key_cert_pair) {
+  pem_key_cert_pair_list_.push_back(pem_key_cert_pair);
+}
+
+void TlsKeyMaterialsConfig::set_key_materials(
+    const grpc::string& pem_root_certs,
+    const std::vector<PemKeyCertPair>& pem_key_cert_pair_list) {
+  pem_key_cert_pair_list_ = pem_key_cert_pair_list;
+  pem_root_certs_ = pem_root_certs;
+}
+
+/** TLS credential reload arg API implementation **/
+TlsCredentialReloadArg::TlsCredentialReloadArg(
+    grpc_tls_credential_reload_arg* arg)
+    : c_arg_(arg) {
+  if (c_arg_ != nullptr && c_arg_->context != nullptr) {
+    gpr_log(GPR_ERROR, "c_arg context has already been set");
+  }
+  c_arg_->context = static_cast<void*>(this);
+  c_arg_->destroy_context = &TlsCredentialReloadArgDestroyContext;
+}
+
+TlsCredentialReloadArg::~TlsCredentialReloadArg() {}
+
+void* TlsCredentialReloadArg::cb_user_data() const {
+  return c_arg_->cb_user_data;
+}
+bool TlsCredentialReloadArg::is_pem_key_cert_pair_list_empty() const {
+  return c_arg_->key_materials_config->pem_key_cert_pair_list().empty();
+}
+
+grpc_ssl_certificate_config_reload_status TlsCredentialReloadArg::status()
+    const {
+  return c_arg_->status;
+}
+
+grpc::string TlsCredentialReloadArg::error_details() const {
+  grpc::string cpp_error_details(c_arg_->error_details);
+  return cpp_error_details;
+}
+
+void TlsCredentialReloadArg::set_cb_user_data(void* cb_user_data) {
+  c_arg_->cb_user_data = cb_user_data;
+}
+
+void TlsCredentialReloadArg::set_pem_root_certs(
+    const grpc::string& pem_root_certs) {
+  ::grpc_core::UniquePtr<char> c_pem_root_certs(
+      gpr_strdup(pem_root_certs.c_str()));
+  c_arg_->key_materials_config->set_pem_root_certs(std::move(c_pem_root_certs));
+}
+
+namespace {
+
+::grpc_core::PemKeyCertPair ConvertToCorePemKeyCertPair(
+    const TlsKeyMaterialsConfig::PemKeyCertPair& pem_key_cert_pair) {
+  grpc_ssl_pem_key_cert_pair* ssl_pair =
+      (grpc_ssl_pem_key_cert_pair*)gpr_malloc(
+          sizeof(grpc_ssl_pem_key_cert_pair));
+  ssl_pair->private_key = gpr_strdup(pem_key_cert_pair.private_key.c_str());
+  ssl_pair->cert_chain = gpr_strdup(pem_key_cert_pair.cert_chain.c_str());
+  return ::grpc_core::PemKeyCertPair(ssl_pair);
+}
+
+}  //  namespace
+
+void TlsCredentialReloadArg::add_pem_key_cert_pair(
+    const TlsKeyMaterialsConfig::PemKeyCertPair& pem_key_cert_pair) {
+  c_arg_->key_materials_config->add_pem_key_cert_pair(
+      ConvertToCorePemKeyCertPair(pem_key_cert_pair));
+}
+
+void TlsCredentialReloadArg::set_key_materials(
+    const grpc::string& pem_root_certs,
+    std::vector<TlsKeyMaterialsConfig::PemKeyCertPair> pem_key_cert_pair_list) {
+  /** Initialize the |key_materials_config| field of |c_arg_|, if it has not
+   *  already been done. **/
+  if (c_arg_->key_materials_config == nullptr) {
+    c_arg_->key_materials_config = grpc_tls_key_materials_config_create();
+  }
+  /** Convert |pem_key_cert_pair_list| to an inlined vector of ssl pairs. **/
+  ::grpc_core::InlinedVector<::grpc_core::PemKeyCertPair, 1>
+      c_pem_key_cert_pair_list;
+  for (const auto& key_cert_pair : pem_key_cert_pair_list) {
+    c_pem_key_cert_pair_list.emplace_back(
+        ConvertToCorePemKeyCertPair(key_cert_pair));
+  }
+  /** Populate the key materials config field of |c_arg_|. **/
+  ::grpc_core::UniquePtr<char> c_pem_root_certs(
+      gpr_strdup(pem_root_certs.c_str()));
+  c_arg_->key_materials_config->set_key_materials(std::move(c_pem_root_certs),
+                                                  c_pem_key_cert_pair_list);
+}
+
+void TlsCredentialReloadArg::set_key_materials_config(
+    const std::shared_ptr<TlsKeyMaterialsConfig>& key_materials_config) {
+  if (key_materials_config == nullptr) {
+    c_arg_->key_materials_config = nullptr;
+    return;
+  }
+  ::grpc_core::InlinedVector<::grpc_core::PemKeyCertPair, 1>
+      c_pem_key_cert_pair_list;
+  for (const auto& key_cert_pair :
+       key_materials_config->pem_key_cert_pair_list()) {
+    grpc_ssl_pem_key_cert_pair* ssl_pair =
+        (grpc_ssl_pem_key_cert_pair*)gpr_malloc(
+            sizeof(grpc_ssl_pem_key_cert_pair));
+    ssl_pair->private_key = gpr_strdup(key_cert_pair.private_key.c_str());
+    ssl_pair->cert_chain = gpr_strdup(key_cert_pair.cert_chain.c_str());
+    ::grpc_core::PemKeyCertPair c_pem_key_cert_pair =
+        ::grpc_core::PemKeyCertPair(ssl_pair);
+    c_pem_key_cert_pair_list.emplace_back(std::move(c_pem_key_cert_pair));
+  }
+  ::grpc_core::UniquePtr<char> c_pem_root_certs(
+      gpr_strdup(key_materials_config->pem_root_certs().c_str()));
+  if (c_arg_->key_materials_config == nullptr) {
+    c_arg_->key_materials_config = grpc_tls_key_materials_config_create();
+  }
+  c_arg_->key_materials_config->set_key_materials(
+      std::move(c_pem_root_certs), std::move(c_pem_key_cert_pair_list));
+  c_arg_->key_materials_config->set_version(key_materials_config->version());
+}
+
+void TlsCredentialReloadArg::set_status(
+    grpc_ssl_certificate_config_reload_status status) {
+  c_arg_->status = status;
+}
+
+void TlsCredentialReloadArg::set_error_details(
+    const grpc::string& error_details) {
+  c_arg_->error_details = gpr_strdup(error_details.c_str());
+}
+
+void TlsCredentialReloadArg::OnCredentialReloadDoneCallback() {
+  if (c_arg_->cb == nullptr) {
+    gpr_log(GPR_ERROR, "credential reload arg callback API is nullptr");
+    return;
+  }
+  c_arg_->cb(c_arg_);
+}
+
+/** gRPC TLS credential reload config API implementation **/
+TlsCredentialReloadConfig::TlsCredentialReloadConfig(
+    std::shared_ptr<TlsCredentialReloadInterface> credential_reload_interface)
+    : credential_reload_interface_(std::move(credential_reload_interface)) {
+  c_config_ = grpc_tls_credential_reload_config_create(
+      nullptr, &TlsCredentialReloadConfigCSchedule,
+      &TlsCredentialReloadConfigCCancel, nullptr);
+  c_config_->set_context(static_cast<void*>(this));
+}
+
+TlsCredentialReloadConfig::~TlsCredentialReloadConfig() {}
+
+/** gRPC TLS server authorization check arg API implementation **/
+TlsServerAuthorizationCheckArg::TlsServerAuthorizationCheckArg(
+    grpc_tls_server_authorization_check_arg* arg)
+    : c_arg_(arg) {
+  if (c_arg_ != nullptr && c_arg_->context != nullptr) {
+    gpr_log(GPR_ERROR, "c_arg context has already been set");
+  }
+  c_arg_->context = static_cast<void*>(this);
+  c_arg_->destroy_context = &TlsServerAuthorizationCheckArgDestroyContext;
+}
+
+TlsServerAuthorizationCheckArg::~TlsServerAuthorizationCheckArg() {}
+
+void* TlsServerAuthorizationCheckArg::cb_user_data() const {
+  return c_arg_->cb_user_data;
+}
+
+int TlsServerAuthorizationCheckArg::success() const { return c_arg_->success; }
+
+grpc::string TlsServerAuthorizationCheckArg::target_name() const {
+  grpc::string cpp_target_name(c_arg_->target_name);
+  return cpp_target_name;
+}
+
+grpc::string TlsServerAuthorizationCheckArg::peer_cert() const {
+  grpc::string cpp_peer_cert(c_arg_->peer_cert);
+  return cpp_peer_cert;
+}
+
+grpc::string TlsServerAuthorizationCheckArg::peer_cert_full_chain() const {
+  grpc::string cpp_peer_cert_full_chain(c_arg_->peer_cert_full_chain);
+  return cpp_peer_cert_full_chain;
+}
+
+grpc_status_code TlsServerAuthorizationCheckArg::status() const {
+  return c_arg_->status;
+}
+
+grpc::string TlsServerAuthorizationCheckArg::error_details() const {
+  grpc::string cpp_error_details(c_arg_->error_details);
+  return cpp_error_details;
+}
+
+void TlsServerAuthorizationCheckArg::set_cb_user_data(void* cb_user_data) {
+  c_arg_->cb_user_data = cb_user_data;
+}
+
+void TlsServerAuthorizationCheckArg::set_success(int success) {
+  c_arg_->success = success;
+}
+
+void TlsServerAuthorizationCheckArg::set_target_name(
+    const grpc::string& target_name) {
+  c_arg_->target_name = gpr_strdup(target_name.c_str());
+}
+
+void TlsServerAuthorizationCheckArg::set_peer_cert(
+    const grpc::string& peer_cert) {
+  c_arg_->peer_cert = gpr_strdup(peer_cert.c_str());
+}
+
+void TlsServerAuthorizationCheckArg::set_peer_cert_full_chain(
+    const grpc::string& peer_cert_full_chain) {
+  c_arg_->peer_cert_full_chain = gpr_strdup(peer_cert_full_chain.c_str());
+}
+
+void TlsServerAuthorizationCheckArg::set_status(grpc_status_code status) {
+  c_arg_->status = status;
+}
+
+void TlsServerAuthorizationCheckArg::set_error_details(
+    const grpc::string& error_details) {
+  c_arg_->error_details = gpr_strdup(error_details.c_str());
+}
+
+void TlsServerAuthorizationCheckArg::OnServerAuthorizationCheckDoneCallback() {
+  if (c_arg_->cb == nullptr) {
+    gpr_log(GPR_ERROR, "server authorizaton check arg callback API is nullptr");
+    return;
+  }
+  c_arg_->cb(c_arg_);
+}
+
+/** gRPC TLS server authorization check config API implementation. **/
+TlsServerAuthorizationCheckConfig::TlsServerAuthorizationCheckConfig(
+    std::shared_ptr<TlsServerAuthorizationCheckInterface>
+        server_authorization_check_interface)
+    : server_authorization_check_interface_(
+          std::move(server_authorization_check_interface)) {
+  c_config_ = grpc_tls_server_authorization_check_config_create(
+      nullptr, &TlsServerAuthorizationCheckConfigCSchedule,
+      &TlsServerAuthorizationCheckConfigCCancel, nullptr);
+  c_config_->set_context(static_cast<void*>(this));
+}
+
+TlsServerAuthorizationCheckConfig::~TlsServerAuthorizationCheckConfig() {}
+
+/** gRPC TLS credential options API implementation **/
+TlsCredentialsOptions::TlsCredentialsOptions(
+    grpc_ssl_client_certificate_request_type cert_request_type,
+    grpc_tls_server_verification_option server_verification_option,
+    std::shared_ptr<TlsKeyMaterialsConfig> key_materials_config,
+    std::shared_ptr<TlsCredentialReloadConfig> credential_reload_config,
+    std::shared_ptr<TlsServerAuthorizationCheckConfig>
+        server_authorization_check_config)
+    : cert_request_type_(cert_request_type),
+      server_verification_option_(server_verification_option),
+      key_materials_config_(std::move(key_materials_config)),
+      credential_reload_config_(std::move(credential_reload_config)),
+      server_authorization_check_config_(
+          std::move(server_authorization_check_config)) {
+  c_credentials_options_ = grpc_tls_credentials_options_create();
+  grpc_tls_credentials_options_set_cert_request_type(c_credentials_options_,
+                                                     cert_request_type_);
+  if (key_materials_config_ != nullptr) {
+    grpc_tls_credentials_options_set_key_materials_config(
+        c_credentials_options_,
+        ConvertToCKeyMaterialsConfig(key_materials_config_));
+  }
+  if (credential_reload_config_ != nullptr) {
+    grpc_tls_credentials_options_set_credential_reload_config(
+        c_credentials_options_, credential_reload_config_->c_config());
+  }
+  if (server_authorization_check_config_ != nullptr) {
+    grpc_tls_credentials_options_set_server_authorization_check_config(
+        c_credentials_options_, server_authorization_check_config_->c_config());
+  }
+  grpc_tls_credentials_options_set_server_verification_option(
+      c_credentials_options_, server_verification_option);
+}
+
+/** Whenever a TlsCredentialsOptions instance is created, the caller takes
+ *  ownership of the c_credentials_options_ pointer (see e.g. the implementation
+ *  of the TlsCredentials API in secure_credentials.cc). For this reason, the
+ *  TlsCredentialsOptions destructor is not responsible for freeing
+ *  c_credentials_options_. **/
+TlsCredentialsOptions::~TlsCredentialsOptions() {}
+
+}  // namespace experimental
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.cc
new file mode 100644
index 0000000..a3b80d5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.cc	
@@ -0,0 +1,149 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/common/tls_credentials_options_util.h"
+#include <grpcpp/security/tls_credentials_options.h>
+
+namespace grpc_impl {
+namespace experimental {
+
+/** Converts the Cpp key materials to C key materials; this allocates memory for
+ * the C key materials. Note that the user must free
+ * the underlying pointer to private key and cert chain duplicates; they are not
+ * freed when the grpc_core::UniquePtr<char> member variables of PemKeyCertPair
+ * are unused. Similarly, the user must free the underlying pointer to
+ * c_pem_root_certs. **/
+grpc_tls_key_materials_config* ConvertToCKeyMaterialsConfig(
+    const std::shared_ptr<TlsKeyMaterialsConfig>& config) {
+  if (config == nullptr) {
+    return nullptr;
+  }
+  grpc_tls_key_materials_config* c_config =
+      grpc_tls_key_materials_config_create();
+  ::grpc_core::InlinedVector<::grpc_core::PemKeyCertPair, 1>
+      c_pem_key_cert_pair_list;
+  for (const auto& key_cert_pair : config->pem_key_cert_pair_list()) {
+    grpc_ssl_pem_key_cert_pair* ssl_pair =
+        (grpc_ssl_pem_key_cert_pair*)gpr_malloc(
+            sizeof(grpc_ssl_pem_key_cert_pair));
+    ssl_pair->private_key = gpr_strdup(key_cert_pair.private_key.c_str());
+    ssl_pair->cert_chain = gpr_strdup(key_cert_pair.cert_chain.c_str());
+    ::grpc_core::PemKeyCertPair c_pem_key_cert_pair =
+        ::grpc_core::PemKeyCertPair(ssl_pair);
+    c_pem_key_cert_pair_list.push_back(::std::move(c_pem_key_cert_pair));
+  }
+  ::grpc_core::UniquePtr<char> c_pem_root_certs(
+      gpr_strdup(config->pem_root_certs().c_str()));
+  c_config->set_key_materials(std::move(c_pem_root_certs),
+                              std::move(c_pem_key_cert_pair_list));
+  c_config->set_version(config->version());
+  return c_config;
+}
+
+/** The C schedule and cancel functions for the credential reload config.
+ * They populate a C credential reload arg with the result of a C++ credential
+ * reload schedule/cancel API. **/
+int TlsCredentialReloadConfigCSchedule(void* /*config_user_data*/,
+                                       grpc_tls_credential_reload_arg* arg) {
+  if (arg == nullptr || arg->config == nullptr ||
+      arg->config->context() == nullptr) {
+    gpr_log(GPR_ERROR, "credential reload arg was not properly initialized");
+    return 1;
+  }
+  TlsCredentialReloadConfig* cpp_config =
+      static_cast<TlsCredentialReloadConfig*>(arg->config->context());
+  TlsCredentialReloadArg* cpp_arg = new TlsCredentialReloadArg(arg);
+  int schedule_result = cpp_config->Schedule(cpp_arg);
+  return schedule_result;
+}
+
+void TlsCredentialReloadConfigCCancel(void* /*config_user_data*/,
+                                      grpc_tls_credential_reload_arg* arg) {
+  if (arg == nullptr || arg->config == nullptr ||
+      arg->config->context() == nullptr) {
+    gpr_log(GPR_ERROR, "credential reload arg was not properly initialized");
+    return;
+  }
+  if (arg->context == nullptr) {
+    gpr_log(GPR_ERROR, "credential reload arg schedule has already completed");
+    return;
+  }
+  TlsCredentialReloadConfig* cpp_config =
+      static_cast<TlsCredentialReloadConfig*>(arg->config->context());
+  TlsCredentialReloadArg* cpp_arg =
+      static_cast<TlsCredentialReloadArg*>(arg->context);
+  cpp_config->Cancel(cpp_arg);
+}
+
+void TlsCredentialReloadArgDestroyContext(void* context) {
+  if (context != nullptr) {
+    TlsCredentialReloadArg* cpp_arg =
+        static_cast<TlsCredentialReloadArg*>(context);
+    delete cpp_arg;
+  }
+}
+
+/** The C schedule and cancel functions for the server authorization check
+ * config. They populate a C server authorization check arg with the result
+ * of a C++ server authorization check schedule/cancel API. **/
+int TlsServerAuthorizationCheckConfigCSchedule(
+    void* /*config_user_data*/, grpc_tls_server_authorization_check_arg* arg) {
+  if (arg == nullptr || arg->config == nullptr ||
+      arg->config->context() == nullptr) {
+    gpr_log(GPR_ERROR,
+            "server authorization check arg was not properly initialized");
+    return 1;
+  }
+  TlsServerAuthorizationCheckConfig* cpp_config =
+      static_cast<TlsServerAuthorizationCheckConfig*>(arg->config->context());
+  TlsServerAuthorizationCheckArg* cpp_arg =
+      new TlsServerAuthorizationCheckArg(arg);
+  int schedule_result = cpp_config->Schedule(cpp_arg);
+  return schedule_result;
+}
+
+void TlsServerAuthorizationCheckConfigCCancel(
+    void* /*config_user_data*/, grpc_tls_server_authorization_check_arg* arg) {
+  if (arg == nullptr || arg->config == nullptr ||
+      arg->config->context() == nullptr) {
+    gpr_log(GPR_ERROR,
+            "server authorization check arg was not properly initialized");
+    return;
+  }
+  if (arg->context == nullptr) {
+    gpr_log(GPR_ERROR,
+            "server authorization check arg schedule has already completed");
+    return;
+  }
+  TlsServerAuthorizationCheckConfig* cpp_config =
+      static_cast<TlsServerAuthorizationCheckConfig*>(arg->config->context());
+  TlsServerAuthorizationCheckArg* cpp_arg =
+      static_cast<TlsServerAuthorizationCheckArg*>(arg->context);
+  cpp_config->Cancel(cpp_arg);
+}
+
+void TlsServerAuthorizationCheckArgDestroyContext(void* context) {
+  if (context != nullptr) {
+    TlsServerAuthorizationCheckArg* cpp_arg =
+        static_cast<TlsServerAuthorizationCheckArg*>(context);
+    delete cpp_arg;
+  }
+}
+
+}  // namespace experimental
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.h
new file mode 100644
index 0000000..93e9456
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/tls_credentials_options_util.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_COMMON_TLS_CREDENTIALS_OPTIONS_UTIL_H
+#define GRPC_INTERNAL_CPP_COMMON_TLS_CREDENTIALS_OPTIONS_UTIL_H
+
+#include <grpc/grpc_security.h>
+#include <grpcpp/security/tls_credentials_options.h>
+
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+namespace grpc_impl {
+namespace experimental {
+
+/** The following function is exposed for testing purposes. **/
+grpc_tls_key_materials_config* ConvertToCKeyMaterialsConfig(
+    const std::shared_ptr<TlsKeyMaterialsConfig>& config);
+
+/** The following 4 functions convert the user-provided schedule or cancel
+ *  functions into C style schedule or cancel functions. These are internal
+ *  functions, not meant to be accessed by the user. **/
+int TlsCredentialReloadConfigCSchedule(void* config_user_data,
+                                       grpc_tls_credential_reload_arg* arg);
+
+void TlsCredentialReloadConfigCCancel(void* config_user_data,
+                                      grpc_tls_credential_reload_arg* arg);
+
+int TlsServerAuthorizationCheckConfigCSchedule(
+    void* config_user_data, grpc_tls_server_authorization_check_arg* arg);
+
+void TlsServerAuthorizationCheckConfigCCancel(
+    void* config_user_data, grpc_tls_server_authorization_check_arg* arg);
+
+/** The following 2 functions cleanup data created in the above C schedule
+ *  functions. **/
+void TlsCredentialReloadArgDestroyContext(void* context);
+
+void TlsServerAuthorizationCheckArgDestroyContext(void* context);
+
+}  //  namespace experimental
+}  // namespace grpc_impl
+
+#endif  // GRPC_INTERNAL_CPP_COMMON_TLS_CREDENTIALS_OPTIONS_UTIL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/validate_service_config.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/validate_service_config.cc
new file mode 100644
index 0000000..0f193cf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/validate_service_config.cc	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpcpp/support/validate_service_config.h>
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+
+namespace grpc {
+namespace experimental {
+grpc::string ValidateServiceConfigJSON(
+    const grpc::string& service_config_json) {
+  grpc_init();
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_core::ServiceConfig::Create(service_config_json.c_str(), &error);
+  grpc::string return_value;
+  if (error != GRPC_ERROR_NONE) {
+    return_value = grpc_error_string(error);
+    GRPC_ERROR_UNREF(error);
+  }
+  grpc_shutdown();
+  return return_value;
+}
+}  // namespace experimental
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/version_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/version_cc.cc
new file mode 100644
index 0000000..4285a58
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/common/version_cc.cc	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This file is autogenerated from:
+   templates/src/core/surface/version.c.template */
+
+#include <grpcpp/grpcpp.h>
+
+namespace grpc {
+grpc::string Version() { return "1.28.2"; }
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/async_generic_service.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/async_generic_service.cc
new file mode 100644
index 0000000..556447a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/async_generic_service.cc	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/generic/async_generic_service.h>
+
+#include <grpcpp/server.h>
+
+namespace grpc {
+
+void AsyncGenericService::RequestCall(
+    GenericServerContext* ctx, GenericServerAsyncReaderWriter* reader_writer,
+    ::grpc_impl::CompletionQueue* call_cq,
+    ::grpc_impl::ServerCompletionQueue* notification_cq, void* tag) {
+  server_->RequestAsyncGenericCall(ctx, reader_writer, call_cq, notification_cq,
+                                   tag);
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/channel_argument_option.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/channel_argument_option.cc
new file mode 100644
index 0000000..9bd091c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/channel_argument_option.cc	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/channel_argument_option.h>
+
+namespace grpc {
+
+std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
+    const grpc::string& name, const grpc::string& value) {
+  class StringOption final : public ServerBuilderOption {
+   public:
+    StringOption(const grpc::string& name, const grpc::string& value)
+        : name_(name), value_(value) {}
+
+    virtual void UpdateArguments(ChannelArguments* args) override {
+      args->SetString(name_, value_);
+    }
+    virtual void UpdatePlugins(
+        std::vector<std::unique_ptr<ServerBuilderPlugin>>* /*plugins*/)
+        override {}
+
+   private:
+    const grpc::string name_;
+    const grpc::string value_;
+  };
+  return std::unique_ptr<ServerBuilderOption>(new StringOption(name, value));
+}
+
+std::unique_ptr<ServerBuilderOption> MakeChannelArgumentOption(
+    const grpc::string& name, int value) {
+  class IntOption final : public ServerBuilderOption {
+   public:
+    IntOption(const grpc::string& name, int value)
+        : name_(name), value_(value) {}
+
+    virtual void UpdateArguments(ChannelArguments* args) override {
+      args->SetInt(name_, value_);
+    }
+    virtual void UpdatePlugins(
+        std::vector<std::unique_ptr<ServerBuilderPlugin>>* /*plugins*/)
+        override {}
+
+   private:
+    const grpc::string name_;
+    const int value_;
+  };
+  return std::unique_ptr<ServerBuilderOption>(new IntOption(name, value));
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/create_default_thread_pool.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/create_default_thread_pool.cc
new file mode 100644
index 0000000..8ca3e32
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/create_default_thread_pool.cc	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/cpu.h>
+
+#include "src/cpp/server/dynamic_thread_pool.h"
+
+#ifndef GRPC_CUSTOM_DEFAULT_THREAD_POOL
+
+namespace grpc {
+namespace {
+
+ThreadPoolInterface* CreateDefaultThreadPoolImpl() {
+  int cores = gpr_cpu_num_cores();
+  if (!cores) cores = 4;
+  return new DynamicThreadPool(cores);
+}
+
+CreateThreadPoolFunc g_ctp_impl = CreateDefaultThreadPoolImpl;
+
+}  // namespace
+
+ThreadPoolInterface* CreateDefaultThreadPool() { return g_ctp_impl(); }
+
+void SetCreateThreadPool(CreateThreadPoolFunc func) { g_ctp_impl = func; }
+
+}  // namespace grpc
+
+#endif  // !GRPC_CUSTOM_DEFAULT_THREAD_POOL
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.cc
new file mode 100644
index 0000000..77c5d6a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.cc	
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/server/dynamic_thread_pool.h"
+
+#include <grpc/support/log.h>
+#include <grpcpp/impl/codegen/sync.h>
+
+#include "src/core/lib/gprpp/thd.h"
+
+namespace grpc {
+
+DynamicThreadPool::DynamicThread::DynamicThread(DynamicThreadPool* pool)
+    : pool_(pool),
+      thd_("grpcpp_dynamic_pool",
+           [](void* th) {
+             static_cast<DynamicThreadPool::DynamicThread*>(th)->ThreadFunc();
+           },
+           this) {
+  thd_.Start();
+}
+DynamicThreadPool::DynamicThread::~DynamicThread() { thd_.Join(); }
+
+void DynamicThreadPool::DynamicThread::ThreadFunc() {
+  pool_->ThreadFunc();
+  // Now that we have killed ourselves, we should reduce the thread count
+  grpc_core::MutexLock lock(&pool_->mu_);
+  pool_->nthreads_--;
+  // Move ourselves to dead list
+  pool_->dead_threads_.push_back(this);
+
+  if ((pool_->shutdown_) && (pool_->nthreads_ == 0)) {
+    pool_->shutdown_cv_.Signal();
+  }
+}
+
+void DynamicThreadPool::ThreadFunc() {
+  for (;;) {
+    // Wait until work is available or we are shutting down.
+    grpc_core::ReleasableMutexLock lock(&mu_);
+    if (!shutdown_ && callbacks_.empty()) {
+      // If there are too many threads waiting, then quit this thread
+      if (threads_waiting_ >= reserve_threads_) {
+        break;
+      }
+      threads_waiting_++;
+      cv_.Wait(&mu_);
+      threads_waiting_--;
+    }
+    // Drain callbacks before considering shutdown to ensure all work
+    // gets completed.
+    if (!callbacks_.empty()) {
+      auto cb = callbacks_.front();
+      callbacks_.pop();
+      lock.Unlock();
+      cb();
+    } else if (shutdown_) {
+      break;
+    }
+  }
+}
+
+DynamicThreadPool::DynamicThreadPool(int reserve_threads)
+    : shutdown_(false),
+      reserve_threads_(reserve_threads),
+      nthreads_(0),
+      threads_waiting_(0) {
+  for (int i = 0; i < reserve_threads_; i++) {
+    grpc_core::MutexLock lock(&mu_);
+    nthreads_++;
+    new DynamicThread(this);
+  }
+}
+
+void DynamicThreadPool::ReapThreads(std::list<DynamicThread*>* tlist) {
+  for (auto t = tlist->begin(); t != tlist->end(); t = tlist->erase(t)) {
+    delete *t;
+  }
+}
+
+DynamicThreadPool::~DynamicThreadPool() {
+  grpc_core::MutexLock lock(&mu_);
+  shutdown_ = true;
+  cv_.Broadcast();
+  while (nthreads_ != 0) {
+    shutdown_cv_.Wait(&mu_);
+  }
+  ReapThreads(&dead_threads_);
+}
+
+void DynamicThreadPool::Add(const std::function<void()>& callback) {
+  grpc_core::MutexLock lock(&mu_);
+  // Add works to the callbacks list
+  callbacks_.push(callback);
+  // Increase pool size or notify as needed
+  if (threads_waiting_ == 0) {
+    // Kick off a new thread
+    nthreads_++;
+    new DynamicThread(this);
+  } else {
+    cv_.Signal();
+  }
+  // Also use this chance to harvest dead threads
+  if (!dead_threads_.empty()) {
+    ReapThreads(&dead_threads_);
+  }
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.h
new file mode 100644
index 0000000..6f9f943
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/dynamic_thread_pool.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_DYNAMIC_THREAD_POOL_H
+#define GRPC_INTERNAL_CPP_DYNAMIC_THREAD_POOL_H
+
+#include <list>
+#include <memory>
+#include <queue>
+
+#include <grpcpp/support/config.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc {
+
+class DynamicThreadPool final : public ThreadPoolInterface {
+ public:
+  explicit DynamicThreadPool(int reserve_threads);
+  ~DynamicThreadPool();
+
+  void Add(const std::function<void()>& callback) override;
+
+ private:
+  class DynamicThread {
+   public:
+    DynamicThread(DynamicThreadPool* pool);
+    ~DynamicThread();
+
+   private:
+    DynamicThreadPool* pool_;
+    grpc_core::Thread thd_;
+    void ThreadFunc();
+  };
+  grpc_core::Mutex mu_;
+  grpc_core::CondVar cv_;
+  grpc_core::CondVar shutdown_cv_;
+  bool shutdown_;
+  std::queue<std::function<void()>> callbacks_;
+  int reserve_threads_;
+  int nthreads_;
+  int threads_waiting_;
+  std::list<DynamicThread*> dead_threads_;
+
+  void ThreadFunc();
+  static void ReapThreads(std::list<DynamicThread*>* tlist);
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_DYNAMIC_THREAD_POOL_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.cc
new file mode 100644
index 0000000..e03d3c6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.cc	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/server/external_connection_acceptor_impl.h"
+
+#include <memory>
+
+#include <grpcpp/server_builder_impl.h>
+#include <grpcpp/support/channel_arguments.h>
+
+namespace grpc {
+namespace internal {
+namespace {
+// The actual type to return to user. It co-owns the internal impl object with
+// the server.
+class AcceptorWrapper : public experimental::ExternalConnectionAcceptor {
+ public:
+  explicit AcceptorWrapper(std::shared_ptr<ExternalConnectionAcceptorImpl> impl)
+      : impl_(std::move(impl)) {}
+  void HandleNewConnection(NewConnectionParameters* p) override {
+    impl_->HandleNewConnection(p);
+  }
+
+ private:
+  std::shared_ptr<ExternalConnectionAcceptorImpl> impl_;
+};
+}  // namespace
+
+ExternalConnectionAcceptorImpl::ExternalConnectionAcceptorImpl(
+    const grpc::string& name,
+    ServerBuilder::experimental_type::ExternalConnectionType type,
+    std::shared_ptr<ServerCredentials> creds)
+    : name_(name), creds_(std::move(creds)) {
+  GPR_ASSERT(type ==
+             ServerBuilder::experimental_type::ExternalConnectionType::FROM_FD);
+}
+
+std::unique_ptr<experimental::ExternalConnectionAcceptor>
+ExternalConnectionAcceptorImpl::GetAcceptor() {
+  grpc_core::MutexLock lock(&mu_);
+  GPR_ASSERT(!has_acceptor_);
+  has_acceptor_ = true;
+  return std::unique_ptr<experimental::ExternalConnectionAcceptor>(
+      new AcceptorWrapper(shared_from_this()));
+}
+
+void ExternalConnectionAcceptorImpl::HandleNewConnection(
+    experimental::ExternalConnectionAcceptor::NewConnectionParameters* p) {
+  grpc_core::MutexLock lock(&mu_);
+  if (shutdown_ || !started_) {
+    // TODO(yangg) clean up.
+    gpr_log(
+        GPR_ERROR,
+        "NOT handling external connection with fd %d, started %d, shutdown %d",
+        p->fd, started_, shutdown_);
+    return;
+  }
+  if (handler_) {
+    handler_->Handle(p->listener_fd, p->fd, p->read_buffer.c_buffer());
+  }
+}
+
+void ExternalConnectionAcceptorImpl::Shutdown() {
+  grpc_core::MutexLock lock(&mu_);
+  shutdown_ = true;
+}
+
+void ExternalConnectionAcceptorImpl::Start() {
+  grpc_core::MutexLock lock(&mu_);
+  GPR_ASSERT(!started_);
+  GPR_ASSERT(has_acceptor_);
+  GPR_ASSERT(!shutdown_);
+  started_ = true;
+}
+
+void ExternalConnectionAcceptorImpl::SetToChannelArgs(ChannelArguments* args) {
+  args->SetPointer(name_.c_str(), &handler_);
+}
+
+}  // namespace internal
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.h
new file mode 100644
index 0000000..a545950
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/external_connection_acceptor_impl.h	
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef SRC_CPP_SERVER_EXTERNAL_CONNECTION_ACCEPTOR_IMPL_H_
+#define SRC_CPP_SERVER_EXTERNAL_CONNECTION_ACCEPTOR_IMPL_H_
+
+#include <memory>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/security/server_credentials.h>
+#include <grpcpp/security/server_credentials_impl.h>
+#include <grpcpp/server_builder.h>
+#include <grpcpp/support/channel_arguments.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+
+namespace grpc {
+namespace internal {
+
+class ExternalConnectionAcceptorImpl
+    : public std::enable_shared_from_this<ExternalConnectionAcceptorImpl> {
+ public:
+  ExternalConnectionAcceptorImpl(
+      const grpc::string& name,
+      ServerBuilder::experimental_type::ExternalConnectionType type,
+      std::shared_ptr<ServerCredentials> creds);
+  // Should only be called once.
+  std::unique_ptr<experimental::ExternalConnectionAcceptor> GetAcceptor();
+
+  void HandleNewConnection(
+      experimental::ExternalConnectionAcceptor::NewConnectionParameters* p);
+
+  void Shutdown();
+
+  void Start();
+
+  const char* name() { return name_.c_str(); }
+
+  ServerCredentials* GetCredentials() { return creds_.get(); }
+
+  void SetToChannelArgs(::grpc::ChannelArguments* args);
+
+ private:
+  const grpc::string name_;
+  std::shared_ptr<ServerCredentials> creds_;
+  grpc_core::TcpServerFdHandler* handler_ = nullptr;  // not owned
+  grpc_core::Mutex mu_;
+  bool has_acceptor_ = false;
+  bool started_ = false;
+  bool shutdown_ = false;
+};
+
+}  // namespace internal
+}  // namespace grpc
+
+#endif  // SRC_CPP_SERVER_EXTERNAL_CONNECTION_ACCEPTOR_IMPL_H_
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.cc
new file mode 100644
index 0000000..ccf14b4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.cc	
@@ -0,0 +1,505 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <memory>
+
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/codegen/method_handler_impl.h>
+
+#include "src/cpp/server/health/default_health_check_service.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h"
+#else
+  #include  "src/proto/grpc/health/v1/health.upb.h"
+#endif
+
+#define MAX_SERVICE_NAME_LENGTH 200
+
+namespace grpc {
+
+//
+// DefaultHealthCheckService
+//
+
+DefaultHealthCheckService::DefaultHealthCheckService() {
+  services_map_[""].SetServingStatus(SERVING);
+}
+
+void DefaultHealthCheckService::SetServingStatus(
+    const grpc::string& service_name, bool serving) {
+  grpc_core::MutexLock lock(&mu_);
+  if (shutdown_) {
+    // Set to NOT_SERVING in case service_name is not in the map.
+    serving = false;
+  }
+  services_map_[service_name].SetServingStatus(serving ? SERVING : NOT_SERVING);
+}
+
+void DefaultHealthCheckService::SetServingStatus(bool serving) {
+  const ServingStatus status = serving ? SERVING : NOT_SERVING;
+  grpc_core::MutexLock lock(&mu_);
+  if (shutdown_) {
+    return;
+  }
+  for (auto& p : services_map_) {
+    ServiceData& service_data = p.second;
+    service_data.SetServingStatus(status);
+  }
+}
+
+void DefaultHealthCheckService::Shutdown() {
+  grpc_core::MutexLock lock(&mu_);
+  if (shutdown_) {
+    return;
+  }
+  shutdown_ = true;
+  for (auto& p : services_map_) {
+    ServiceData& service_data = p.second;
+    service_data.SetServingStatus(NOT_SERVING);
+  }
+}
+
+DefaultHealthCheckService::ServingStatus
+DefaultHealthCheckService::GetServingStatus(
+    const grpc::string& service_name) const {
+  grpc_core::MutexLock lock(&mu_);
+  auto it = services_map_.find(service_name);
+  if (it == services_map_.end()) {
+    return NOT_FOUND;
+  }
+  const ServiceData& service_data = it->second;
+  return service_data.GetServingStatus();
+}
+
+void DefaultHealthCheckService::RegisterCallHandler(
+    const grpc::string& service_name,
+    std::shared_ptr<HealthCheckServiceImpl::CallHandler> handler) {
+  grpc_core::MutexLock lock(&mu_);
+  ServiceData& service_data = services_map_[service_name];
+  service_data.AddCallHandler(handler /* copies ref */);
+  HealthCheckServiceImpl::CallHandler* h = handler.get();
+  h->SendHealth(std::move(handler), service_data.GetServingStatus());
+}
+
+void DefaultHealthCheckService::UnregisterCallHandler(
+    const grpc::string& service_name,
+    const std::shared_ptr<HealthCheckServiceImpl::CallHandler>& handler) {
+  grpc_core::MutexLock lock(&mu_);
+  auto it = services_map_.find(service_name);
+  if (it == services_map_.end()) return;
+  ServiceData& service_data = it->second;
+  service_data.RemoveCallHandler(handler);
+  if (service_data.Unused()) {
+    services_map_.erase(it);
+  }
+}
+
+DefaultHealthCheckService::HealthCheckServiceImpl*
+DefaultHealthCheckService::GetHealthCheckService(
+    std::unique_ptr<ServerCompletionQueue> cq) {
+  GPR_ASSERT(impl_ == nullptr);
+  impl_.reset(new HealthCheckServiceImpl(this, std::move(cq)));
+  return impl_.get();
+}
+
+//
+// DefaultHealthCheckService::ServiceData
+//
+
+void DefaultHealthCheckService::ServiceData::SetServingStatus(
+    ServingStatus status) {
+  status_ = status;
+  for (auto& call_handler : call_handlers_) {
+    call_handler->SendHealth(call_handler /* copies ref */, status);
+  }
+}
+
+void DefaultHealthCheckService::ServiceData::AddCallHandler(
+    std::shared_ptr<HealthCheckServiceImpl::CallHandler> handler) {
+  call_handlers_.insert(std::move(handler));
+}
+
+void DefaultHealthCheckService::ServiceData::RemoveCallHandler(
+    const std::shared_ptr<HealthCheckServiceImpl::CallHandler>& handler) {
+  call_handlers_.erase(handler);
+}
+
+//
+// DefaultHealthCheckService::HealthCheckServiceImpl
+//
+
+namespace {
+const char kHealthCheckMethodName[] = "/grpc.health.v1.Health/Check";
+const char kHealthWatchMethodName[] = "/grpc.health.v1.Health/Watch";
+}  // namespace
+
+DefaultHealthCheckService::HealthCheckServiceImpl::HealthCheckServiceImpl(
+    DefaultHealthCheckService* database,
+    std::unique_ptr<ServerCompletionQueue> cq)
+    : database_(database), cq_(std::move(cq)) {
+  // Add Check() method.
+  AddMethod(new internal::RpcServiceMethod(
+      kHealthCheckMethodName, internal::RpcMethod::NORMAL_RPC, nullptr));
+  // Add Watch() method.
+  AddMethod(new internal::RpcServiceMethod(
+      kHealthWatchMethodName, internal::RpcMethod::SERVER_STREAMING, nullptr));
+  // Create serving thread.
+  thread_ = std::unique_ptr<::grpc_core::Thread>(
+      new ::grpc_core::Thread("grpc_health_check_service", Serve, this));
+}
+
+DefaultHealthCheckService::HealthCheckServiceImpl::~HealthCheckServiceImpl() {
+  // We will reach here after the server starts shutting down.
+  shutdown_ = true;
+  {
+    grpc_core::MutexLock lock(&cq_shutdown_mu_);
+    cq_->Shutdown();
+  }
+  thread_->Join();
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::StartServingThread() {
+  // Request the calls we're interested in.
+  // We do this before starting the serving thread, so that we know it's
+  // done before server startup is complete.
+  CheckCallHandler::CreateAndStart(cq_.get(), database_, this);
+  WatchCallHandler::CreateAndStart(cq_.get(), database_, this);
+  // Start serving thread.
+  thread_->Start();
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::Serve(void* arg) {
+  HealthCheckServiceImpl* service = static_cast<HealthCheckServiceImpl*>(arg);
+  void* tag;
+  bool ok;
+  while (true) {
+    if (!service->cq_->Next(&tag, &ok)) {
+      // The completion queue is shutting down.
+      GPR_ASSERT(service->shutdown_);
+      break;
+    }
+    auto* next_step = static_cast<CallableTag*>(tag);
+    next_step->Run(ok);
+  }
+}
+
+bool DefaultHealthCheckService::HealthCheckServiceImpl::DecodeRequest(
+    const ByteBuffer& request, grpc::string* service_name) {
+  std::vector<Slice> slices;
+  if (!request.Dump(&slices).ok()) return false;
+  uint8_t* request_bytes = nullptr;
+  size_t request_size = 0;
+  if (slices.size() == 1) {
+    request_bytes = const_cast<uint8_t*>(slices[0].begin());
+    request_size = slices[0].size();
+  } else if (slices.size() > 1) {
+    request_bytes = static_cast<uint8_t*>(gpr_malloc(request.Length()));
+    uint8_t* copy_to = request_bytes;
+    for (size_t i = 0; i < slices.size(); i++) {
+      memcpy(copy_to, slices[i].begin(), slices[i].size());
+      copy_to += slices[i].size();
+    }
+  }
+  upb::Arena arena;
+  grpc_health_v1_HealthCheckRequest* request_struct =
+      grpc_health_v1_HealthCheckRequest_parse(
+          reinterpret_cast<char*>(request_bytes), request_size, arena.ptr());
+  if (slices.size() > 1) {
+    gpr_free(request_bytes);
+  }
+  if (request_struct == nullptr) {
+    return false;
+  }
+  upb_strview service =
+      grpc_health_v1_HealthCheckRequest_service(request_struct);
+  if (service.size > MAX_SERVICE_NAME_LENGTH) {
+    return false;
+  }
+  service_name->assign(service.data, service.size);
+  return true;
+}
+
+bool DefaultHealthCheckService::HealthCheckServiceImpl::EncodeResponse(
+    ServingStatus status, ByteBuffer* response) {
+  upb::Arena arena;
+  grpc_health_v1_HealthCheckResponse* response_struct =
+      grpc_health_v1_HealthCheckResponse_new(arena.ptr());
+  grpc_health_v1_HealthCheckResponse_set_status(
+      response_struct,
+      status == NOT_FOUND
+          ? grpc_health_v1_HealthCheckResponse_SERVICE_UNKNOWN
+          : status == SERVING ? grpc_health_v1_HealthCheckResponse_SERVING
+                              : grpc_health_v1_HealthCheckResponse_NOT_SERVING);
+  size_t buf_length;
+  char* buf = grpc_health_v1_HealthCheckResponse_serialize(
+      response_struct, arena.ptr(), &buf_length);
+  if (buf == nullptr) {
+    return false;
+  }
+  grpc_slice response_slice = grpc_slice_from_copied_buffer(buf, buf_length);
+  Slice encoded_response(response_slice, Slice::STEAL_REF);
+  ByteBuffer response_buffer(&encoded_response, 1);
+  response->Swap(&response_buffer);
+  return true;
+}
+
+//
+// DefaultHealthCheckService::HealthCheckServiceImpl::CheckCallHandler
+//
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::CheckCallHandler::
+    CreateAndStart(ServerCompletionQueue* cq,
+                   DefaultHealthCheckService* database,
+                   HealthCheckServiceImpl* service) {
+  std::shared_ptr<CallHandler> self =
+      std::make_shared<CheckCallHandler>(cq, database, service);
+  CheckCallHandler* handler = static_cast<CheckCallHandler*>(self.get());
+  {
+    grpc_core::MutexLock lock(&service->cq_shutdown_mu_);
+    if (service->shutdown_) return;
+    // Request a Check() call.
+    handler->next_ =
+        CallableTag(std::bind(&CheckCallHandler::OnCallReceived, handler,
+                              std::placeholders::_1, std::placeholders::_2),
+                    std::move(self));
+    service->RequestAsyncUnary(0, &handler->ctx_, &handler->request_,
+                               &handler->writer_, cq, cq, &handler->next_);
+  }
+}
+
+DefaultHealthCheckService::HealthCheckServiceImpl::CheckCallHandler::
+    CheckCallHandler(ServerCompletionQueue* cq,
+                     DefaultHealthCheckService* database,
+                     HealthCheckServiceImpl* service)
+    : cq_(cq), database_(database), service_(service), writer_(&ctx_) {}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::CheckCallHandler::
+    OnCallReceived(std::shared_ptr<CallHandler> self, bool ok) {
+  if (!ok) {
+    // The value of ok being false means that the server is shutting down.
+    return;
+  }
+  // Spawn a new handler instance to serve the next new client. Every handler
+  // instance will deallocate itself when it's done.
+  CreateAndStart(cq_, database_, service_);
+  // Process request.
+  gpr_log(GPR_DEBUG, "[HCS %p] Health check started for handler %p", service_,
+          this);
+  grpc::string service_name;
+  grpc::Status status = Status::OK;
+  ByteBuffer response;
+  if (!service_->DecodeRequest(request_, &service_name)) {
+    status = Status(StatusCode::INVALID_ARGUMENT, "could not parse request");
+  } else {
+    ServingStatus serving_status = database_->GetServingStatus(service_name);
+    if (serving_status == NOT_FOUND) {
+      status = Status(StatusCode::NOT_FOUND, "service name unknown");
+    } else if (!service_->EncodeResponse(serving_status, &response)) {
+      status = Status(StatusCode::INTERNAL, "could not encode response");
+    }
+  }
+  // Send response.
+  {
+    grpc_core::MutexLock lock(&service_->cq_shutdown_mu_);
+    if (!service_->shutdown_) {
+      next_ =
+          CallableTag(std::bind(&CheckCallHandler::OnFinishDone, this,
+                                std::placeholders::_1, std::placeholders::_2),
+                      std::move(self));
+      if (status.ok()) {
+        writer_.Finish(response, status, &next_);
+      } else {
+        writer_.FinishWithError(status, &next_);
+      }
+    }
+  }
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::CheckCallHandler::
+    OnFinishDone(std::shared_ptr<CallHandler> self, bool ok) {
+  if (ok) {
+    gpr_log(GPR_DEBUG, "[HCS %p] Health check call finished for handler %p",
+            service_, this);
+  }
+  self.reset();  // To appease clang-tidy.
+}
+
+//
+// DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler
+//
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    CreateAndStart(ServerCompletionQueue* cq,
+                   DefaultHealthCheckService* database,
+                   HealthCheckServiceImpl* service) {
+  std::shared_ptr<CallHandler> self =
+      std::make_shared<WatchCallHandler>(cq, database, service);
+  WatchCallHandler* handler = static_cast<WatchCallHandler*>(self.get());
+  {
+    grpc_core::MutexLock lock(&service->cq_shutdown_mu_);
+    if (service->shutdown_) return;
+    // Request AsyncNotifyWhenDone().
+    handler->on_done_notified_ =
+        CallableTag(std::bind(&WatchCallHandler::OnDoneNotified, handler,
+                              std::placeholders::_1, std::placeholders::_2),
+                    self /* copies ref */);
+    handler->ctx_.AsyncNotifyWhenDone(&handler->on_done_notified_);
+    // Request a Watch() call.
+    handler->next_ =
+        CallableTag(std::bind(&WatchCallHandler::OnCallReceived, handler,
+                              std::placeholders::_1, std::placeholders::_2),
+                    std::move(self));
+    service->RequestAsyncServerStreaming(1, &handler->ctx_, &handler->request_,
+                                         &handler->stream_, cq, cq,
+                                         &handler->next_);
+  }
+}
+
+DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    WatchCallHandler(ServerCompletionQueue* cq,
+                     DefaultHealthCheckService* database,
+                     HealthCheckServiceImpl* service)
+    : cq_(cq), database_(database), service_(service), stream_(&ctx_) {}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    OnCallReceived(std::shared_ptr<CallHandler> self, bool ok) {
+  if (!ok) {
+    // Server shutting down.
+    //
+    // AsyncNotifyWhenDone() needs to be called before the call starts, but the
+    // tag will not pop out if the call never starts (
+    // https://github.com/grpc/grpc/issues/10136). So we need to manually
+    // release the ownership of the handler in this case.
+    GPR_ASSERT(on_done_notified_.ReleaseHandler() != nullptr);
+    return;
+  }
+  // Spawn a new handler instance to serve the next new client. Every handler
+  // instance will deallocate itself when it's done.
+  CreateAndStart(cq_, database_, service_);
+  // Parse request.
+  if (!service_->DecodeRequest(request_, &service_name_)) {
+    SendFinish(std::move(self),
+               Status(StatusCode::INVALID_ARGUMENT, "could not parse request"));
+    return;
+  }
+  // Register the call for updates to the service.
+  gpr_log(GPR_DEBUG,
+          "[HCS %p] Health watch started for service \"%s\" (handler: %p)",
+          service_, service_name_.c_str(), this);
+  database_->RegisterCallHandler(service_name_, std::move(self));
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    SendHealth(std::shared_ptr<CallHandler> self, ServingStatus status) {
+  grpc_core::MutexLock lock(&send_mu_);
+  // If there's already a send in flight, cache the new status, and
+  // we'll start a new send for it when the one in flight completes.
+  if (send_in_flight_) {
+    pending_status_ = status;
+    return;
+  }
+  // Start a send.
+  SendHealthLocked(std::move(self), status);
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    SendHealthLocked(std::shared_ptr<CallHandler> self, ServingStatus status) {
+  send_in_flight_ = true;
+  // Construct response.
+  ByteBuffer response;
+  bool success = service_->EncodeResponse(status, &response);
+  // Grab shutdown lock and send response.
+  grpc_core::MutexLock cq_lock(&service_->cq_shutdown_mu_);
+  if (service_->shutdown_) {
+    SendFinishLocked(std::move(self), Status::CANCELLED);
+    return;
+  }
+  if (!success) {
+    SendFinishLocked(std::move(self),
+                     Status(StatusCode::INTERNAL, "could not encode response"));
+    return;
+  }
+  next_ = CallableTag(std::bind(&WatchCallHandler::OnSendHealthDone, this,
+                                std::placeholders::_1, std::placeholders::_2),
+                      std::move(self));
+  stream_.Write(response, &next_);
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    OnSendHealthDone(std::shared_ptr<CallHandler> self, bool ok) {
+  if (!ok) {
+    SendFinish(std::move(self), Status::CANCELLED);
+    return;
+  }
+  grpc_core::MutexLock lock(&send_mu_);
+  send_in_flight_ = false;
+  // If we got a new status since we started the last send, start a
+  // new send for it.
+  if (pending_status_ != NOT_FOUND) {
+    auto status = pending_status_;
+    pending_status_ = NOT_FOUND;
+    SendHealthLocked(std::move(self), status);
+  }
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    SendFinish(std::shared_ptr<CallHandler> self, const Status& status) {
+  if (finish_called_) return;
+  grpc_core::MutexLock cq_lock(&service_->cq_shutdown_mu_);
+  if (service_->shutdown_) return;
+  SendFinishLocked(std::move(self), status);
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    SendFinishLocked(std::shared_ptr<CallHandler> self, const Status& status) {
+  on_finish_done_ =
+      CallableTag(std::bind(&WatchCallHandler::OnFinishDone, this,
+                            std::placeholders::_1, std::placeholders::_2),
+                  std::move(self));
+  stream_.Finish(status, &on_finish_done_);
+  finish_called_ = true;
+}
+
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    OnFinishDone(std::shared_ptr<CallHandler> self, bool ok) {
+  if (ok) {
+    gpr_log(GPR_DEBUG,
+            "[HCS %p] Health watch call finished (service_name: \"%s\", "
+            "handler: %p).",
+            service_, service_name_.c_str(), this);
+  }
+  self.reset();  // To appease clang-tidy.
+}
+
+// TODO(roth): This method currently assumes that there will be only one
+// thread polling the cq and invoking the corresponding callbacks.  If
+// that changes, we will need to add synchronization here.
+void DefaultHealthCheckService::HealthCheckServiceImpl::WatchCallHandler::
+    OnDoneNotified(std::shared_ptr<CallHandler> self, bool ok) {
+  GPR_ASSERT(ok);
+  gpr_log(GPR_DEBUG,
+          "[HCS %p] Health watch call is notified done (handler: %p, "
+          "is_cancelled: %d).",
+          service_, this, static_cast<int>(ctx_.IsCancelled()));
+  database_->UnregisterCallHandler(service_name_, self);
+  SendFinish(std::move(self), Status::CANCELLED);
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.h
new file mode 100644
index 0000000..1a9bd33
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/default_health_check_service.h	
@@ -0,0 +1,285 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
+#define GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
+
+#include <atomic>
+#include <set>
+
+#include <grpc/support/log.h>
+#include <grpcpp/grpcpp.h>
+#include <grpcpp/health_check_service_interface.h>
+#include <grpcpp/impl/codegen/async_generic_service.h>
+#include <grpcpp/impl/codegen/async_unary_call.h>
+#include <grpcpp/impl/codegen/completion_queue.h>
+#include <grpcpp/impl/codegen/service_type.h>
+#include <grpcpp/support/byte_buffer.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+
+namespace grpc {
+
+// Default implementation of HealthCheckServiceInterface. Server will create and
+// own it.
+class DefaultHealthCheckService final : public HealthCheckServiceInterface {
+ public:
+  enum ServingStatus { NOT_FOUND, SERVING, NOT_SERVING };
+
+  // The service impl to register with the server.
+  class HealthCheckServiceImpl : public Service {
+   public:
+    // Base class for call handlers.
+    class CallHandler {
+     public:
+      virtual ~CallHandler() = default;
+      virtual void SendHealth(std::shared_ptr<CallHandler> self,
+                              ServingStatus status) = 0;
+    };
+
+    HealthCheckServiceImpl(DefaultHealthCheckService* database,
+                           std::unique_ptr<ServerCompletionQueue> cq);
+
+    ~HealthCheckServiceImpl();
+
+    void StartServingThread();
+
+   private:
+    // A tag that can be called with a bool argument. It's tailored for
+    // CallHandler's use. Before being used, it should be constructed with a
+    // method of CallHandler and a shared pointer to the handler. The
+    // shared pointer will be moved to the invoked function and the function
+    // can only be invoked once. That makes ref counting of the handler easier,
+    // because the shared pointer is not bound to the function and can be gone
+    // once the invoked function returns (if not used any more).
+    class CallableTag {
+     public:
+      using HandlerFunction =
+          std::function<void(std::shared_ptr<CallHandler>, bool)>;
+
+      CallableTag() {}
+
+      CallableTag(HandlerFunction func, std::shared_ptr<CallHandler> handler)
+          : handler_function_(std::move(func)), handler_(std::move(handler)) {
+        GPR_ASSERT(handler_function_ != nullptr);
+        GPR_ASSERT(handler_ != nullptr);
+      }
+
+      // Runs the tag. This should be called only once. The handler is no
+      // longer owned by this tag after this method is invoked.
+      void Run(bool ok) {
+        GPR_ASSERT(handler_function_ != nullptr);
+        GPR_ASSERT(handler_ != nullptr);
+        handler_function_(std::move(handler_), ok);
+      }
+
+      // Releases and returns the shared pointer to the handler.
+      std::shared_ptr<CallHandler> ReleaseHandler() {
+        return std::move(handler_);
+      }
+
+     private:
+      HandlerFunction handler_function_ = nullptr;
+      std::shared_ptr<CallHandler> handler_;
+    };
+
+    // Call handler for Check method.
+    // Each handler takes care of one call. It contains per-call data and it
+    // will access the members of the parent class (i.e.,
+    // DefaultHealthCheckService) for per-service health data.
+    class CheckCallHandler : public CallHandler {
+     public:
+      // Instantiates a CheckCallHandler and requests the next health check
+      // call. The handler object will manage its own lifetime, so no action is
+      // needed from the caller any more regarding that object.
+      static void CreateAndStart(ServerCompletionQueue* cq,
+                                 DefaultHealthCheckService* database,
+                                 HealthCheckServiceImpl* service);
+
+      // This ctor is public because we want to use std::make_shared<> in
+      // CreateAndStart(). This ctor shouldn't be used elsewhere.
+      CheckCallHandler(ServerCompletionQueue* cq,
+                       DefaultHealthCheckService* database,
+                       HealthCheckServiceImpl* service);
+
+      // Not used for Check.
+      void SendHealth(std::shared_ptr<CallHandler> /*self*/,
+                      ServingStatus /*status*/) override {}
+
+     private:
+      // Called when we receive a call.
+      // Spawns a new handler so that we can keep servicing future calls.
+      void OnCallReceived(std::shared_ptr<CallHandler> self, bool ok);
+
+      // Called when Finish() is done.
+      void OnFinishDone(std::shared_ptr<CallHandler> self, bool ok);
+
+      // The members passed down from HealthCheckServiceImpl.
+      ServerCompletionQueue* cq_;
+      DefaultHealthCheckService* database_;
+      HealthCheckServiceImpl* service_;
+
+      ByteBuffer request_;
+      GenericServerAsyncResponseWriter writer_;
+      ServerContext ctx_;
+
+      CallableTag next_;
+    };
+
+    // Call handler for Watch method.
+    // Each handler takes care of one call. It contains per-call data and it
+    // will access the members of the parent class (i.e.,
+    // DefaultHealthCheckService) for per-service health data.
+    class WatchCallHandler : public CallHandler {
+     public:
+      // Instantiates a WatchCallHandler and requests the next health check
+      // call. The handler object will manage its own lifetime, so no action is
+      // needed from the caller any more regarding that object.
+      static void CreateAndStart(ServerCompletionQueue* cq,
+                                 DefaultHealthCheckService* database,
+                                 HealthCheckServiceImpl* service);
+
+      // This ctor is public because we want to use std::make_shared<> in
+      // CreateAndStart(). This ctor shouldn't be used elsewhere.
+      WatchCallHandler(ServerCompletionQueue* cq,
+                       DefaultHealthCheckService* database,
+                       HealthCheckServiceImpl* service);
+
+      void SendHealth(std::shared_ptr<CallHandler> self,
+                      ServingStatus status) override;
+
+     private:
+      // Called when we receive a call.
+      // Spawns a new handler so that we can keep servicing future calls.
+      void OnCallReceived(std::shared_ptr<CallHandler> self, bool ok);
+
+      // Requires holding send_mu_.
+      void SendHealthLocked(std::shared_ptr<CallHandler> self,
+                            ServingStatus status);
+
+      // When sending a health result finishes.
+      void OnSendHealthDone(std::shared_ptr<CallHandler> self, bool ok);
+
+      void SendFinish(std::shared_ptr<CallHandler> self, const Status& status);
+
+      // Requires holding service_->cq_shutdown_mu_.
+      void SendFinishLocked(std::shared_ptr<CallHandler> self,
+                            const Status& status);
+
+      // Called when Finish() is done.
+      void OnFinishDone(std::shared_ptr<CallHandler> self, bool ok);
+
+      // Called when AsyncNotifyWhenDone() notifies us.
+      void OnDoneNotified(std::shared_ptr<CallHandler> self, bool ok);
+
+      // The members passed down from HealthCheckServiceImpl.
+      ServerCompletionQueue* cq_;
+      DefaultHealthCheckService* database_;
+      HealthCheckServiceImpl* service_;
+
+      ByteBuffer request_;
+      grpc::string service_name_;
+      GenericServerAsyncWriter stream_;
+      ServerContext ctx_;
+
+      grpc_core::Mutex send_mu_;
+      bool send_in_flight_ = false;               // Guarded by mu_.
+      ServingStatus pending_status_ = NOT_FOUND;  // Guarded by mu_.
+
+      bool finish_called_ = false;
+      CallableTag next_;
+      CallableTag on_done_notified_;
+      CallableTag on_finish_done_;
+    };
+
+    // Handles the incoming requests and drives the completion queue in a loop.
+    static void Serve(void* arg);
+
+    // Returns true on success.
+    static bool DecodeRequest(const ByteBuffer& request,
+                              grpc::string* service_name);
+    static bool EncodeResponse(ServingStatus status, ByteBuffer* response);
+
+    // Needed to appease Windows compilers, which don't seem to allow
+    // nested classes to access protected members in the parent's
+    // superclass.
+    using Service::RequestAsyncServerStreaming;
+    using Service::RequestAsyncUnary;
+
+    DefaultHealthCheckService* database_;
+    std::unique_ptr<ServerCompletionQueue> cq_;
+
+    // To synchronize the operations related to shutdown state of cq_, so that
+    // we don't enqueue new tags into cq_ after it is already shut down.
+    grpc_core::Mutex cq_shutdown_mu_;
+    std::atomic_bool shutdown_{false};
+    std::unique_ptr<::grpc_core::Thread> thread_;
+  };
+
+  DefaultHealthCheckService();
+
+  void SetServingStatus(const grpc::string& service_name,
+                        bool serving) override;
+  void SetServingStatus(bool serving) override;
+
+  void Shutdown() override;
+
+  ServingStatus GetServingStatus(const grpc::string& service_name) const;
+
+  HealthCheckServiceImpl* GetHealthCheckService(
+      std::unique_ptr<ServerCompletionQueue> cq);
+
+ private:
+  // Stores the current serving status of a service and any call
+  // handlers registered for updates when the service's status changes.
+  class ServiceData {
+   public:
+    void SetServingStatus(ServingStatus status);
+    ServingStatus GetServingStatus() const { return status_; }
+    void AddCallHandler(
+        std::shared_ptr<HealthCheckServiceImpl::CallHandler> handler);
+    void RemoveCallHandler(
+        const std::shared_ptr<HealthCheckServiceImpl::CallHandler>& handler);
+    bool Unused() const {
+      return call_handlers_.empty() && status_ == NOT_FOUND;
+    }
+
+   private:
+    ServingStatus status_ = NOT_FOUND;
+    std::set<std::shared_ptr<HealthCheckServiceImpl::CallHandler>>
+        call_handlers_;
+  };
+
+  void RegisterCallHandler(
+      const grpc::string& service_name,
+      std::shared_ptr<HealthCheckServiceImpl::CallHandler> handler);
+
+  void UnregisterCallHandler(
+      const grpc::string& service_name,
+      const std::shared_ptr<HealthCheckServiceImpl::CallHandler>& handler);
+
+  mutable grpc_core::Mutex mu_;
+  bool shutdown_ = false;                             // Guarded by mu_.
+  std::map<grpc::string, ServiceData> services_map_;  // Guarded by mu_.
+  std::unique_ptr<HealthCheckServiceImpl> impl_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_SERVER_DEFAULT_HEALTH_CHECK_SERVICE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service.cc
new file mode 100644
index 0000000..ca0b49a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service.cc	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/health_check_service_interface_impl.h>
+
+namespace grpc_impl {
+namespace {
+bool g_grpc_default_health_check_service_enabled = false;
+}  // namespace
+
+bool DefaultHealthCheckServiceEnabled() {
+  return g_grpc_default_health_check_service_enabled;
+}
+
+void EnableDefaultHealthCheckService(bool enable) {
+  g_grpc_default_health_check_service_enabled = enable;
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service_server_builder_option.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service_server_builder_option.cc
new file mode 100644
index 0000000..3fa384a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/health/health_check_service_server_builder_option.cc	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/ext/health_check_service_server_builder_option.h>
+
+namespace grpc {
+
+HealthCheckServiceServerBuilderOption::HealthCheckServiceServerBuilderOption(
+    std::unique_ptr<HealthCheckServiceInterface> hc)
+    : hc_(std::move(hc)) {}
+// Hand over hc_ to the server.
+void HealthCheckServiceServerBuilderOption::UpdateArguments(
+    ChannelArguments* args) {
+  args->SetPointer(kHealthCheckServiceInterfaceArg, hc_.release());
+}
+
+void HealthCheckServiceServerBuilderOption::UpdatePlugins(
+    std::vector<std::unique_ptr<ServerBuilderPlugin>>* /*plugins*/) {}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/insecure_server_credentials.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/insecure_server_credentials.cc
new file mode 100644
index 0000000..e4623ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/insecure_server_credentials.cc	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/security/server_credentials.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+
+namespace grpc_impl {
+namespace {
+class InsecureServerCredentialsImpl final : public ServerCredentials {
+ public:
+  int AddPortToServer(const grpc::string& addr, grpc_server* server) override {
+    return grpc_server_add_insecure_http2_port(server, addr.c_str());
+  }
+  void SetAuthMetadataProcessor(
+      const std::shared_ptr<grpc::AuthMetadataProcessor>& processor) override {
+    (void)processor;
+    GPR_ASSERT(0);  // Should not be called on InsecureServerCredentials.
+  }
+};
+}  // namespace
+
+std::shared_ptr<ServerCredentials> InsecureServerCredentials() {
+  return std::shared_ptr<ServerCredentials>(
+      new InsecureServerCredentialsImpl());
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.cc
new file mode 100644
index 0000000..205ebc7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.cc	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <functional>
+#include <map>
+#include <memory>
+
+#include <grpcpp/impl/codegen/slice.h>
+#include <grpcpp/security/auth_metadata_processor.h>
+
+#include "src/cpp/common/secure_auth_context.h"
+#include "src/cpp/server/secure_server_credentials.h"
+
+namespace grpc {
+
+void AuthMetadataProcessorAyncWrapper::Destroy(void* wrapper) {
+  auto* w = static_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
+  delete w;
+}
+
+void AuthMetadataProcessorAyncWrapper::Process(
+    void* wrapper, grpc_auth_context* context, const grpc_metadata* md,
+    size_t num_md, grpc_process_auth_metadata_done_cb cb, void* user_data) {
+  auto* w = static_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
+  if (!w->processor_) {
+    // Early exit.
+    cb(user_data, nullptr, 0, nullptr, 0, GRPC_STATUS_OK, nullptr);
+    return;
+  }
+  if (w->processor_->IsBlocking()) {
+    w->thread_pool_->Add([w, context, md, num_md, cb, user_data] {
+      w->AuthMetadataProcessorAyncWrapper::InvokeProcessor(context, md, num_md,
+                                                           cb, user_data);
+    });
+  } else {
+    // invoke directly.
+    w->InvokeProcessor(context, md, num_md, cb, user_data);
+  }
+}
+
+void AuthMetadataProcessorAyncWrapper::InvokeProcessor(
+    grpc_auth_context* ctx, const grpc_metadata* md, size_t num_md,
+    grpc_process_auth_metadata_done_cb cb, void* user_data) {
+  AuthMetadataProcessor::InputMetadata metadata;
+  for (size_t i = 0; i < num_md; i++) {
+    metadata.insert(std::make_pair(StringRefFromSlice(&md[i].key),
+                                   StringRefFromSlice(&md[i].value)));
+  }
+  SecureAuthContext context(ctx);
+  AuthMetadataProcessor::OutputMetadata consumed_metadata;
+  AuthMetadataProcessor::OutputMetadata response_metadata;
+
+  Status status = processor_->Process(metadata, &context, &consumed_metadata,
+                                      &response_metadata);
+
+  std::vector<grpc_metadata> consumed_md;
+  for (const auto& consumed : consumed_metadata) {
+    grpc_metadata md_entry;
+    md_entry.key = SliceReferencingString(consumed.first);
+    md_entry.value = SliceReferencingString(consumed.second);
+    md_entry.flags = 0;
+    consumed_md.push_back(md_entry);
+  }
+  std::vector<grpc_metadata> response_md;
+  for (const auto& response : response_metadata) {
+    grpc_metadata md_entry;
+    md_entry.key = SliceReferencingString(response.first);
+    md_entry.value = SliceReferencingString(response.second);
+    md_entry.flags = 0;
+    response_md.push_back(md_entry);
+  }
+  auto consumed_md_data = consumed_md.empty() ? nullptr : &consumed_md[0];
+  auto response_md_data = response_md.empty() ? nullptr : &response_md[0];
+  cb(user_data, consumed_md_data, consumed_md.size(), response_md_data,
+     response_md.size(), static_cast<grpc_status_code>(status.error_code()),
+     status.error_message().c_str());
+}
+
+}  // namespace grpc
+
+namespace grpc_impl {
+
+int SecureServerCredentials::AddPortToServer(const grpc::string& addr,
+                                             grpc_server* server) {
+  return grpc_server_add_secure_http2_port(server, addr.c_str(), creds_);
+}
+
+void SecureServerCredentials::SetAuthMetadataProcessor(
+    const std::shared_ptr<grpc::AuthMetadataProcessor>& processor) {
+  auto* wrapper = new grpc::AuthMetadataProcessorAyncWrapper(processor);
+  grpc_server_credentials_set_auth_metadata_processor(
+      creds_, {grpc::AuthMetadataProcessorAyncWrapper::Process,
+               grpc::AuthMetadataProcessorAyncWrapper::Destroy, wrapper});
+}
+
+std::shared_ptr<ServerCredentials> SslServerCredentials(
+    const grpc::SslServerCredentialsOptions& options) {
+  std::vector<grpc_ssl_pem_key_cert_pair> pem_key_cert_pairs;
+  for (const auto& key_cert_pair : options.pem_key_cert_pairs) {
+    grpc_ssl_pem_key_cert_pair p = {key_cert_pair.private_key.c_str(),
+                                    key_cert_pair.cert_chain.c_str()};
+    pem_key_cert_pairs.push_back(p);
+  }
+  grpc_server_credentials* c_creds = grpc_ssl_server_credentials_create_ex(
+      options.pem_root_certs.empty() ? nullptr : options.pem_root_certs.c_str(),
+      pem_key_cert_pairs.empty() ? nullptr : &pem_key_cert_pairs[0],
+      pem_key_cert_pairs.size(),
+      options.force_client_auth
+          ? GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
+          : options.client_certificate_request,
+      nullptr);
+  return std::shared_ptr<ServerCredentials>(
+      new SecureServerCredentials(c_creds));
+}
+
+namespace experimental {
+
+std::shared_ptr<ServerCredentials> AltsServerCredentials(
+    const AltsServerCredentialsOptions& /* options */) {
+  grpc_alts_credentials_options* c_options =
+      grpc_alts_credentials_server_options_create();
+  grpc_server_credentials* c_creds =
+      grpc_alts_server_credentials_create(c_options);
+  grpc_alts_credentials_options_destroy(c_options);
+  return std::shared_ptr<ServerCredentials>(
+      new SecureServerCredentials(c_creds));
+}
+
+std::shared_ptr<ServerCredentials> LocalServerCredentials(
+    grpc_local_connect_type type) {
+  return std::shared_ptr<ServerCredentials>(
+      new SecureServerCredentials(grpc_local_server_credentials_create(type)));
+}
+
+std::shared_ptr<ServerCredentials> TlsServerCredentials(
+    const TlsCredentialsOptions& options) {
+  return std::shared_ptr<ServerCredentials>(new SecureServerCredentials(
+      grpc_tls_server_credentials_create(options.c_credentials_options())));
+}
+
+}  // namespace experimental
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.h
new file mode 100644
index 0000000..7db0ee2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/secure_server_credentials.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H
+#define GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H
+
+#include <memory>
+
+#include <grpcpp/security/server_credentials.h>
+#include <grpcpp/security/tls_credentials_options.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc_impl {
+
+class SecureServerCredentials;
+}  // namespace grpc_impl
+
+namespace grpc {
+
+typedef ::grpc_impl::SecureServerCredentials SecureServerCredentials;
+
+class AuthMetadataProcessorAyncWrapper final {
+ public:
+  static void Destroy(void* wrapper);
+
+  static void Process(void* wrapper, grpc_auth_context* context,
+                      const grpc_metadata* md, size_t num_md,
+                      grpc_process_auth_metadata_done_cb cb, void* user_data);
+
+  AuthMetadataProcessorAyncWrapper(
+      const std::shared_ptr<AuthMetadataProcessor>& processor)
+      : processor_(processor) {
+    if (processor && processor->IsBlocking()) {
+      thread_pool_.reset(CreateDefaultThreadPool());
+    }
+  }
+
+ private:
+  void InvokeProcessor(grpc_auth_context* context, const grpc_metadata* md,
+                       size_t num_md, grpc_process_auth_metadata_done_cb cb,
+                       void* user_data);
+  std::unique_ptr<ThreadPoolInterface> thread_pool_;
+  std::shared_ptr<AuthMetadataProcessor> processor_;
+};
+
+}  // namespace grpc
+
+namespace grpc_impl {
+
+class SecureServerCredentials final : public ServerCredentials {
+ public:
+  explicit SecureServerCredentials(grpc_server_credentials* creds)
+      : creds_(creds) {}
+  ~SecureServerCredentials() override {
+    grpc_server_credentials_release(creds_);
+  }
+
+  int AddPortToServer(const grpc::string& addr, grpc_server* server) override;
+
+  void SetAuthMetadataProcessor(
+      const std::shared_ptr<grpc::AuthMetadataProcessor>& processor) override;
+
+ private:
+  grpc_server_credentials* creds_;
+  std::unique_ptr<grpc::AuthMetadataProcessorAyncWrapper> processor_;
+};
+
+}  // namespace grpc_impl
+
+#endif  // GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_builder.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_builder.cc
new file mode 100644
index 0000000..d5e9347
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_builder.cc	
@@ -0,0 +1,449 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/server_builder.h>
+
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/resource_quota.h>
+#include <grpcpp/server.h>
+
+#include <utility>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/cpp/server/external_connection_acceptor_impl.h"
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc_impl {
+
+static std::vector<std::unique_ptr<grpc::ServerBuilderPlugin> (*)()>*
+    g_plugin_factory_list;
+static gpr_once once_init_plugin_list = GPR_ONCE_INIT;
+
+static void do_plugin_list_init(void) {
+  g_plugin_factory_list =
+      new std::vector<std::unique_ptr<grpc::ServerBuilderPlugin> (*)()>();
+}
+
+ServerBuilder::ServerBuilder()
+    : max_receive_message_size_(INT_MIN),
+      max_send_message_size_(INT_MIN),
+      sync_server_settings_(SyncServerSettings()),
+      resource_quota_(nullptr) {
+  gpr_once_init(&once_init_plugin_list, do_plugin_list_init);
+  for (const auto& value : *g_plugin_factory_list) {
+    plugins_.emplace_back(value());
+  }
+
+  // all compression algorithms enabled by default.
+  enabled_compression_algorithms_bitset_ =
+      (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1;
+  memset(&maybe_default_compression_level_, 0,
+         sizeof(maybe_default_compression_level_));
+  memset(&maybe_default_compression_algorithm_, 0,
+         sizeof(maybe_default_compression_algorithm_));
+}
+
+ServerBuilder::~ServerBuilder() {
+  if (resource_quota_ != nullptr) {
+    grpc_resource_quota_unref(resource_quota_);
+  }
+}
+
+std::unique_ptr<ServerCompletionQueue> ServerBuilder::AddCompletionQueue(
+    bool is_frequently_polled) {
+  ServerCompletionQueue* cq = new ServerCompletionQueue(
+      GRPC_CQ_NEXT,
+      is_frequently_polled ? GRPC_CQ_DEFAULT_POLLING : GRPC_CQ_NON_LISTENING,
+      nullptr);
+  cqs_.push_back(cq);
+  return std::unique_ptr<ServerCompletionQueue>(cq);
+}
+
+ServerBuilder& ServerBuilder::RegisterService(grpc::Service* service) {
+  services_.emplace_back(new NamedService(service));
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::RegisterService(const grpc::string& addr,
+                                              grpc::Service* service) {
+  services_.emplace_back(new NamedService(addr, service));
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::RegisterAsyncGenericService(
+    grpc::AsyncGenericService* service) {
+  if (generic_service_ || callback_generic_service_) {
+    gpr_log(GPR_ERROR,
+            "Adding multiple generic services is unsupported for now. "
+            "Dropping the service %p",
+            (void*)service);
+  } else {
+    generic_service_ = service;
+  }
+  return *this;
+}
+
+#ifdef GRPC_CALLBACK_API_NONEXPERIMENTAL
+ServerBuilder& ServerBuilder::RegisterCallbackGenericService(
+    grpc::CallbackGenericService* service) {
+  if (generic_service_ || callback_generic_service_) {
+    gpr_log(GPR_ERROR,
+            "Adding multiple generic services is unsupported for now. "
+            "Dropping the service %p",
+            (void*)service);
+  } else {
+    callback_generic_service_ = service;
+  }
+  return *this;
+}
+#else
+ServerBuilder& ServerBuilder::experimental_type::RegisterCallbackGenericService(
+    grpc::experimental::CallbackGenericService* service) {
+  if (builder_->generic_service_ || builder_->callback_generic_service_) {
+    gpr_log(GPR_ERROR,
+            "Adding multiple generic services is unsupported for now. "
+            "Dropping the service %p",
+            (void*)service);
+  } else {
+    builder_->callback_generic_service_ = service;
+  }
+  return *builder_;
+}
+#endif
+
+std::unique_ptr<grpc::experimental::ExternalConnectionAcceptor>
+ServerBuilder::experimental_type::AddExternalConnectionAcceptor(
+    experimental_type::ExternalConnectionType type,
+    std::shared_ptr<ServerCredentials> creds) {
+  grpc::string name_prefix("external:");
+  char count_str[GPR_LTOA_MIN_BUFSIZE];
+  gpr_ltoa(static_cast<long>(builder_->acceptors_.size()), count_str);
+  builder_->acceptors_.emplace_back(
+      std::make_shared<grpc::internal::ExternalConnectionAcceptorImpl>(
+          name_prefix.append(count_str), type, creds));
+  return builder_->acceptors_.back()->GetAcceptor();
+}
+
+ServerBuilder& ServerBuilder::SetOption(
+    std::unique_ptr<grpc::ServerBuilderOption> option) {
+  options_.push_back(std::move(option));
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::SetSyncServerOption(
+    ServerBuilder::SyncServerOption option, int val) {
+  switch (option) {
+    case NUM_CQS:
+      sync_server_settings_.num_cqs = val;
+      break;
+    case MIN_POLLERS:
+      sync_server_settings_.min_pollers = val;
+      break;
+    case MAX_POLLERS:
+      sync_server_settings_.max_pollers = val;
+      break;
+    case CQ_TIMEOUT_MSEC:
+      sync_server_settings_.cq_timeout_msec = val;
+      break;
+  }
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::SetCompressionAlgorithmSupportStatus(
+    grpc_compression_algorithm algorithm, bool enabled) {
+  if (enabled) {
+    GPR_BITSET(&enabled_compression_algorithms_bitset_, algorithm);
+  } else {
+    GPR_BITCLEAR(&enabled_compression_algorithms_bitset_, algorithm);
+  }
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::SetDefaultCompressionLevel(
+    grpc_compression_level level) {
+  maybe_default_compression_level_.is_set = true;
+  maybe_default_compression_level_.level = level;
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::SetDefaultCompressionAlgorithm(
+    grpc_compression_algorithm algorithm) {
+  maybe_default_compression_algorithm_.is_set = true;
+  maybe_default_compression_algorithm_.algorithm = algorithm;
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::SetResourceQuota(
+    const grpc_impl::ResourceQuota& resource_quota) {
+  if (resource_quota_ != nullptr) {
+    grpc_resource_quota_unref(resource_quota_);
+  }
+  resource_quota_ = resource_quota.c_resource_quota();
+  grpc_resource_quota_ref(resource_quota_);
+  return *this;
+}
+
+ServerBuilder& ServerBuilder::AddListeningPort(
+    const grpc::string& addr_uri,
+    std::shared_ptr<grpc::ServerCredentials> creds, int* selected_port) {
+  const grpc::string uri_scheme = "dns:";
+  grpc::string addr = addr_uri;
+  if (addr_uri.compare(0, uri_scheme.size(), uri_scheme) == 0) {
+    size_t pos = uri_scheme.size();
+    while (addr_uri[pos] == '/') ++pos;  // Skip slashes.
+    addr = addr_uri.substr(pos);
+  }
+  Port port = {addr, std::move(creds), selected_port};
+  ports_.push_back(port);
+  return *this;
+}
+
+std::unique_ptr<grpc::Server> ServerBuilder::BuildAndStart() {
+  grpc::ChannelArguments args;
+
+  for (const auto& option : options_) {
+    option->UpdateArguments(&args);
+    option->UpdatePlugins(&plugins_);
+  }
+  if (max_receive_message_size_ >= -1) {
+    grpc_channel_args c_args = args.c_channel_args();
+    const grpc_arg* arg =
+        grpc_channel_args_find(&c_args, GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH);
+    // Some option has set max_receive_message_length and it is also set
+    // directly on the ServerBuilder.
+    if (arg != nullptr) {
+      gpr_log(
+          GPR_ERROR,
+          "gRPC ServerBuilder receives multiple max_receive_message_length");
+    }
+    args.SetInt(GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH, max_receive_message_size_);
+  }
+  // The default message size is -1 (max), so no need to explicitly set it for
+  // -1.
+  if (max_send_message_size_ >= 0) {
+    args.SetInt(GRPC_ARG_MAX_SEND_MESSAGE_LENGTH, max_send_message_size_);
+  }
+
+  args.SetInt(GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET,
+              enabled_compression_algorithms_bitset_);
+  if (maybe_default_compression_level_.is_set) {
+    args.SetInt(GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL,
+                maybe_default_compression_level_.level);
+  }
+  if (maybe_default_compression_algorithm_.is_set) {
+    args.SetInt(GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM,
+                maybe_default_compression_algorithm_.algorithm);
+  }
+
+  if (resource_quota_ != nullptr) {
+    args.SetPointerWithVtable(GRPC_ARG_RESOURCE_QUOTA, resource_quota_,
+                              grpc_resource_quota_arg_vtable());
+  }
+
+  for (const auto& plugin : plugins_) {
+    plugin->UpdateServerBuilder(this);
+    plugin->UpdateChannelArguments(&args);
+  }
+
+  // == Determine if the server has any syncrhonous methods ==
+  bool has_sync_methods = false;
+  for (const auto& value : services_) {
+    if (value->service->has_synchronous_methods()) {
+      has_sync_methods = true;
+      break;
+    }
+  }
+
+  if (!has_sync_methods) {
+    for (const auto& value : plugins_) {
+      if (value->has_sync_methods()) {
+        has_sync_methods = true;
+        break;
+      }
+    }
+  }
+
+  // If this is a Sync server, i.e a server expositing sync API, then the server
+  // needs to create some completion queues to listen for incoming requests.
+  // 'sync_server_cqs' are those internal completion queues.
+  //
+  // This is different from the completion queues added to the server via
+  // ServerBuilder's AddCompletionQueue() method (those completion queues
+  // are in 'cqs_' member variable of ServerBuilder object)
+  std::shared_ptr<std::vector<std::unique_ptr<ServerCompletionQueue>>>
+      sync_server_cqs(std::make_shared<
+                      std::vector<std::unique_ptr<ServerCompletionQueue>>>());
+
+  bool has_frequently_polled_cqs = false;
+  for (const auto& cq : cqs_) {
+    if (cq->IsFrequentlyPolled()) {
+      has_frequently_polled_cqs = true;
+      break;
+    }
+  }
+
+  // == Determine if the server has any callback methods ==
+  bool has_callback_methods = false;
+  for (const auto& service : services_) {
+    if (service->service->has_callback_methods()) {
+      has_callback_methods = true;
+      has_frequently_polled_cqs = true;
+      break;
+    }
+  }
+
+  const bool is_hybrid_server = has_sync_methods && has_frequently_polled_cqs;
+
+  if (has_sync_methods) {
+    grpc_cq_polling_type polling_type =
+        is_hybrid_server ? GRPC_CQ_NON_POLLING : GRPC_CQ_DEFAULT_POLLING;
+
+    // Create completion queues to listen to incoming rpc requests
+    for (int i = 0; i < sync_server_settings_.num_cqs; i++) {
+      sync_server_cqs->emplace_back(
+          new ServerCompletionQueue(GRPC_CQ_NEXT, polling_type, nullptr));
+    }
+  }
+
+  // TODO(vjpai): Add a section here for plugins once they can support callback
+  // methods
+
+  if (has_sync_methods) {
+    // This is a Sync server
+    gpr_log(GPR_INFO,
+            "Synchronous server. Num CQs: %d, Min pollers: %d, Max Pollers: "
+            "%d, CQ timeout (msec): %d",
+            sync_server_settings_.num_cqs, sync_server_settings_.min_pollers,
+            sync_server_settings_.max_pollers,
+            sync_server_settings_.cq_timeout_msec);
+  }
+
+  if (has_callback_methods) {
+    gpr_log(GPR_INFO, "Callback server.");
+  }
+
+  std::unique_ptr<grpc::Server> server(new grpc::Server(
+      &args, sync_server_cqs, sync_server_settings_.min_pollers,
+      sync_server_settings_.max_pollers, sync_server_settings_.cq_timeout_msec,
+      std::move(acceptors_), resource_quota_,
+      std::move(interceptor_creators_)));
+
+  grpc_impl::ServerInitializer* initializer = server->initializer();
+
+  // Register all the completion queues with the server. i.e
+  //  1. sync_server_cqs: internal completion queues created IF this is a sync
+  //     server
+  //  2. cqs_: Completion queues added via AddCompletionQueue() call
+
+  for (const auto& cq : *sync_server_cqs) {
+    grpc_server_register_completion_queue(server->server_, cq->cq(), nullptr);
+    has_frequently_polled_cqs = true;
+  }
+
+  if (has_callback_methods || callback_generic_service_ != nullptr) {
+    auto* cq = server->CallbackCQ();
+    grpc_server_register_completion_queue(server->server_, cq->cq(), nullptr);
+  }
+
+  // cqs_ contains the completion queue added by calling the ServerBuilder's
+  // AddCompletionQueue() API. Some of them may not be frequently polled (i.e by
+  // calling Next() or AsyncNext()) and hence are not safe to be used for
+  // listening to incoming channels. Such completion queues must be registered
+  // as non-listening queues. In debug mode, these should have their server list
+  // tracked since these are provided the user and must be Shutdown by the user
+  // after the server is shutdown.
+  for (const auto& cq : cqs_) {
+    grpc_server_register_completion_queue(server->server_, cq->cq(), nullptr);
+    cq->RegisterServer(server.get());
+  }
+
+  if (!has_frequently_polled_cqs) {
+    gpr_log(GPR_ERROR,
+            "At least one of the completion queues must be frequently polled");
+    return nullptr;
+  }
+
+  for (const auto& value : services_) {
+    if (!server->RegisterService(value->host.get(), value->service)) {
+      return nullptr;
+    }
+  }
+
+  for (const auto& value : plugins_) {
+    value->InitServer(initializer);
+  }
+
+  if (generic_service_) {
+    server->RegisterAsyncGenericService(generic_service_);
+  } else if (callback_generic_service_) {
+    server->RegisterCallbackGenericService(callback_generic_service_);
+  } else {
+    for (const auto& value : services_) {
+      if (value->service->has_generic_methods()) {
+        gpr_log(GPR_ERROR,
+                "Some methods were marked generic but there is no "
+                "generic service registered.");
+        return nullptr;
+      }
+    }
+  }
+
+  bool added_port = false;
+  for (auto& port : ports_) {
+    int r = server->AddListeningPort(port.addr, port.creds.get());
+    if (!r) {
+      if (added_port) server->Shutdown();
+      return nullptr;
+    }
+    added_port = true;
+    if (port.selected_port != nullptr) {
+      *port.selected_port = r;
+    }
+  }
+
+  auto cqs_data = cqs_.empty() ? nullptr : &cqs_[0];
+  server->Start(cqs_data, cqs_.size());
+
+  for (const auto& value : plugins_) {
+    value->Finish(initializer);
+  }
+
+  return server;
+}
+
+void ServerBuilder::InternalAddPluginFactory(
+    std::unique_ptr<grpc::ServerBuilderPlugin> (*CreatePlugin)()) {
+  gpr_once_init(&once_init_plugin_list, do_plugin_list_init);
+  (*g_plugin_factory_list).push_back(CreatePlugin);
+}
+
+ServerBuilder& ServerBuilder::EnableWorkaround(grpc_workaround_list id) {
+  switch (id) {
+    case GRPC_WORKAROUND_ID_CRONET_COMPRESSION:
+      return AddChannelArgument(GRPC_ARG_WORKAROUND_CRONET_COMPRESSION, 1);
+    default:
+      gpr_log(GPR_ERROR, "Workaround %u does not exist or is obsolete.", id);
+      return *this;
+  }
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_callback.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_callback.cc
new file mode 100644
index 0000000..c1620b7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_callback.cc	
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/codegen/server_callback_impl.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/executor.h"
+
+namespace grpc_impl {
+namespace internal {
+
+void ServerCallbackCall::ScheduleOnDone(bool inline_ondone) {
+  if (inline_ondone) {
+    CallOnDone();
+  } else {
+    // Unlike other uses of closure, do not Ref or Unref here since at this
+    // point, all the Ref'fing and Unref'fing is done for this call.
+    grpc_core::ExecCtx exec_ctx;
+    struct ClosureWithArg {
+      grpc_closure closure;
+      ServerCallbackCall* call;
+      explicit ClosureWithArg(ServerCallbackCall* call_arg) : call(call_arg) {
+        GRPC_CLOSURE_INIT(&closure,
+                          [](void* void_arg, grpc_error*) {
+                            ClosureWithArg* arg =
+                                static_cast<ClosureWithArg*>(void_arg);
+                            arg->call->CallOnDone();
+                            delete arg;
+                          },
+                          this, grpc_schedule_on_exec_ctx);
+      }
+    };
+    ClosureWithArg* arg = new ClosureWithArg(this);
+    grpc_core::Executor::Run(&arg->closure, GRPC_ERROR_NONE);
+  }
+}
+
+void ServerCallbackCall::CallOnCancel(ServerReactor* reactor) {
+  if (reactor->InternalInlineable()) {
+    reactor->OnCancel();
+  } else {
+    // Ref to make sure that the closure executes before the whole call gets
+    // destructed, and Unref within the closure.
+    Ref();
+    grpc_core::ExecCtx exec_ctx;
+    struct ClosureWithArg {
+      grpc_closure closure;
+      ServerCallbackCall* call;
+      ServerReactor* reactor;
+      ClosureWithArg(ServerCallbackCall* call_arg, ServerReactor* reactor_arg)
+          : call(call_arg), reactor(reactor_arg) {
+        GRPC_CLOSURE_INIT(&closure,
+                          [](void* void_arg, grpc_error*) {
+                            ClosureWithArg* arg =
+                                static_cast<ClosureWithArg*>(void_arg);
+                            arg->reactor->OnCancel();
+                            arg->call->MaybeDone();
+                            delete arg;
+                          },
+                          this, grpc_schedule_on_exec_ctx);
+      }
+    };
+    ClosureWithArg* arg = new ClosureWithArg(this, reactor);
+    grpc_core::Executor::Run(&arg->closure, GRPC_ERROR_NONE);
+  }
+}
+
+}  // namespace internal
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_cc.cc
new file mode 100644
index 0000000..34ffd59
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_cc.cc	
@@ -0,0 +1,1433 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/server.h>
+
+#include <cstdlib>
+#include <sstream>
+#include <type_traits>
+#include <utility>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/impl/codegen/async_unary_call.h>
+#include <grpcpp/impl/codegen/byte_buffer.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/completion_queue_tag.h>
+#include <grpcpp/impl/codegen/method_handler.h>
+#include <grpcpp/impl/codegen/server_interceptor.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/impl/server_initializer.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/security/server_credentials.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/support/time.h>
+
+#include "src/core/ext/transport/inproc/inproc_transport.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/cpp/client/create_channel_internal.h"
+#include "src/cpp/server/external_connection_acceptor_impl.h"
+#include "src/cpp/server/health/default_health_check_service.h"
+#include "src/cpp/thread_manager/thread_manager.h"
+
+namespace grpc {
+namespace {
+
+// The default value for maximum number of threads that can be created in the
+// sync server. This value of INT_MAX is chosen to match the default behavior if
+// no ResourceQuota is set. To modify the max number of threads in a sync
+// server, pass a custom ResourceQuota object  (with the desired number of
+// max-threads set) to the server builder.
+#define DEFAULT_MAX_SYNC_SERVER_THREADS INT_MAX
+
+// How many callback requests of each method should we pre-register at start
+#define DEFAULT_CALLBACK_REQS_PER_METHOD 512
+
+// What is the (soft) limit for outstanding requests in the server
+#define SOFT_MAXIMUM_CALLBACK_REQS_OUTSTANDING 30000
+
+// If the number of unmatched requests for a method drops below this amount, try
+// to allocate extra unless it pushes the total number of callbacks above the
+// soft maximum
+#define SOFT_MINIMUM_SPARE_CALLBACK_REQS_PER_METHOD 128
+
+class DefaultGlobalCallbacks final : public Server::GlobalCallbacks {
+ public:
+  ~DefaultGlobalCallbacks() override {}
+  void PreSynchronousRequest(ServerContext* /*context*/) override {}
+  void PostSynchronousRequest(ServerContext* /*context*/) override {}
+};
+
+std::shared_ptr<Server::GlobalCallbacks> g_callbacks = nullptr;
+gpr_once g_once_init_callbacks = GPR_ONCE_INIT;
+
+void InitGlobalCallbacks() {
+  if (!g_callbacks) {
+    g_callbacks.reset(new DefaultGlobalCallbacks());
+  }
+}
+
+class ShutdownTag : public internal::CompletionQueueTag {
+ public:
+  bool FinalizeResult(void** /*tag*/, bool* /*status*/) { return false; }
+};
+
+class DummyTag : public internal::CompletionQueueTag {
+ public:
+  bool FinalizeResult(void** /*tag*/, bool* /*status*/) { return true; }
+};
+
+class UnimplementedAsyncRequestContext {
+ protected:
+  UnimplementedAsyncRequestContext() : generic_stream_(&server_context_) {}
+
+  GenericServerContext server_context_;
+  GenericServerAsyncReaderWriter generic_stream_;
+};
+
+// TODO(vjpai): Just for this file, use some contents of the experimental
+// namespace here to make the code easier to read below. Remove this when
+// de-experimentalized fully.
+#ifndef GRPC_CALLBACK_API_NONEXPERIMENTAL
+using ::grpc::experimental::CallbackGenericService;
+using ::grpc::experimental::CallbackServerContext;
+using ::grpc::experimental::GenericCallbackServerContext;
+#endif
+
+}  // namespace
+
+ServerInterface::BaseAsyncRequest::BaseAsyncRequest(
+    ServerInterface* server, ServerContext* context,
+    internal::ServerAsyncStreamingInterface* stream, CompletionQueue* call_cq,
+    ServerCompletionQueue* notification_cq, void* tag, bool delete_on_finalize)
+    : server_(server),
+      context_(context),
+      stream_(stream),
+      call_cq_(call_cq),
+      notification_cq_(notification_cq),
+      tag_(tag),
+      delete_on_finalize_(delete_on_finalize),
+      call_(nullptr),
+      done_intercepting_(false) {
+  /* Set up interception state partially for the receive ops. call_wrapper_ is
+   * not filled at this point, but it will be filled before the interceptors are
+   * run. */
+  interceptor_methods_.SetCall(&call_wrapper_);
+  interceptor_methods_.SetReverse();
+  call_cq_->RegisterAvalanching();  // This op will trigger more ops
+}
+
+ServerInterface::BaseAsyncRequest::~BaseAsyncRequest() {
+  call_cq_->CompleteAvalanching();
+}
+
+bool ServerInterface::BaseAsyncRequest::FinalizeResult(void** tag,
+                                                       bool* status) {
+  if (done_intercepting_) {
+    *tag = tag_;
+    if (delete_on_finalize_) {
+      delete this;
+    }
+    return true;
+  }
+  context_->set_call(call_);
+  context_->cq_ = call_cq_;
+  if (call_wrapper_.call() == nullptr) {
+    // Fill it since it is empty.
+    call_wrapper_ = internal::Call(
+        call_, server_, call_cq_, server_->max_receive_message_size(), nullptr);
+  }
+
+  // just the pointers inside call are copied here
+  stream_->BindCall(&call_wrapper_);
+
+  if (*status && call_ && call_wrapper_.server_rpc_info()) {
+    done_intercepting_ = true;
+    // Set interception point for RECV INITIAL METADATA
+    interceptor_methods_.AddInterceptionHookPoint(
+        experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA);
+    interceptor_methods_.SetRecvInitialMetadata(&context_->client_metadata_);
+    if (interceptor_methods_.RunInterceptors(
+            [this]() { ContinueFinalizeResultAfterInterception(); })) {
+      // There are no interceptors to run. Continue
+    } else {
+      // There were interceptors to be run, so
+      // ContinueFinalizeResultAfterInterception will be run when interceptors
+      // are done.
+      return false;
+    }
+  }
+  if (*status && call_) {
+    context_->BeginCompletionOp(&call_wrapper_, nullptr, nullptr);
+  }
+  *tag = tag_;
+  if (delete_on_finalize_) {
+    delete this;
+  }
+  return true;
+}
+
+void ServerInterface::BaseAsyncRequest::
+    ContinueFinalizeResultAfterInterception() {
+  context_->BeginCompletionOp(&call_wrapper_, nullptr, nullptr);
+  // Queue a tag which will be returned immediately
+  grpc_core::ExecCtx exec_ctx;
+  grpc_cq_begin_op(notification_cq_->cq(), this);
+  grpc_cq_end_op(
+      notification_cq_->cq(), this, GRPC_ERROR_NONE,
+      [](void* /*arg*/, grpc_cq_completion* completion) { delete completion; },
+      nullptr, new grpc_cq_completion());
+}
+
+ServerInterface::RegisteredAsyncRequest::RegisteredAsyncRequest(
+    ServerInterface* server, ServerContext* context,
+    internal::ServerAsyncStreamingInterface* stream, CompletionQueue* call_cq,
+    ServerCompletionQueue* notification_cq, void* tag, const char* name,
+    internal::RpcMethod::RpcType type)
+    : BaseAsyncRequest(server, context, stream, call_cq, notification_cq, tag,
+                       true),
+      name_(name),
+      type_(type) {}
+
+void ServerInterface::RegisteredAsyncRequest::IssueRequest(
+    void* registered_method, grpc_byte_buffer** payload,
+    ServerCompletionQueue* notification_cq) {
+  // The following call_start_batch is internally-generated so no need for an
+  // explanatory log on failure.
+  GPR_ASSERT(grpc_server_request_registered_call(
+                 server_->server(), registered_method, &call_,
+                 &context_->deadline_, context_->client_metadata_.arr(),
+                 payload, call_cq_->cq(), notification_cq->cq(),
+                 this) == GRPC_CALL_OK);
+}
+
+ServerInterface::GenericAsyncRequest::GenericAsyncRequest(
+    ServerInterface* server, GenericServerContext* context,
+    internal::ServerAsyncStreamingInterface* stream, CompletionQueue* call_cq,
+    ServerCompletionQueue* notification_cq, void* tag, bool delete_on_finalize)
+    : BaseAsyncRequest(server, context, stream, call_cq, notification_cq, tag,
+                       delete_on_finalize) {
+  grpc_call_details_init(&call_details_);
+  GPR_ASSERT(notification_cq);
+  GPR_ASSERT(call_cq);
+  // The following call_start_batch is internally-generated so no need for an
+  // explanatory log on failure.
+  GPR_ASSERT(grpc_server_request_call(server->server(), &call_, &call_details_,
+                                      context->client_metadata_.arr(),
+                                      call_cq->cq(), notification_cq->cq(),
+                                      this) == GRPC_CALL_OK);
+}
+
+bool ServerInterface::GenericAsyncRequest::FinalizeResult(void** tag,
+                                                          bool* status) {
+  // If we are done intercepting, there is nothing more for us to do
+  if (done_intercepting_) {
+    return BaseAsyncRequest::FinalizeResult(tag, status);
+  }
+  // TODO(yangg) remove the copy here.
+  if (*status) {
+    static_cast<GenericServerContext*>(context_)->method_ =
+        StringFromCopiedSlice(call_details_.method);
+    static_cast<GenericServerContext*>(context_)->host_ =
+        StringFromCopiedSlice(call_details_.host);
+    context_->deadline_ = call_details_.deadline;
+  }
+  grpc_slice_unref(call_details_.method);
+  grpc_slice_unref(call_details_.host);
+  call_wrapper_ = internal::Call(
+      call_, server_, call_cq_, server_->max_receive_message_size(),
+      context_->set_server_rpc_info(
+          static_cast<GenericServerContext*>(context_)->method_.c_str(),
+          internal::RpcMethod::BIDI_STREAMING,
+          *server_->interceptor_creators()));
+  return BaseAsyncRequest::FinalizeResult(tag, status);
+}
+
+namespace {
+class ShutdownCallback : public grpc_experimental_completion_queue_functor {
+ public:
+  ShutdownCallback() {
+    functor_run = &ShutdownCallback::Run;
+    // Set inlineable to true since this callback is trivial and thus does not
+    // need to be run from the executor (triggering a thread hop). This should
+    // only be used by internal callbacks like this and not by user application
+    // code.
+    inlineable = true;
+  }
+  // TakeCQ takes ownership of the cq into the shutdown callback
+  // so that the shutdown callback will be responsible for destroying it
+  void TakeCQ(CompletionQueue* cq) { cq_ = cq; }
+
+  // The Run function will get invoked by the completion queue library
+  // when the shutdown is actually complete
+  static void Run(grpc_experimental_completion_queue_functor* cb, int) {
+    auto* callback = static_cast<ShutdownCallback*>(cb);
+    delete callback->cq_;
+    delete callback;
+  }
+
+ private:
+  CompletionQueue* cq_ = nullptr;
+};
+}  // namespace
+
+}  // namespace grpc
+
+namespace grpc_impl {
+
+/// Use private inheritance rather than composition only to establish order
+/// of construction, since the public base class should be constructed after the
+/// elements belonging to the private base class are constructed. This is not
+/// possible using true composition.
+class Server::UnimplementedAsyncRequest final
+    : private grpc::UnimplementedAsyncRequestContext,
+      public GenericAsyncRequest {
+ public:
+  UnimplementedAsyncRequest(Server* server, grpc::ServerCompletionQueue* cq)
+      : GenericAsyncRequest(server, &server_context_, &generic_stream_, cq, cq,
+                            nullptr, false),
+        server_(server),
+        cq_(cq) {}
+
+  bool FinalizeResult(void** tag, bool* status) override;
+
+  grpc::ServerContext* context() { return &server_context_; }
+  grpc::GenericServerAsyncReaderWriter* stream() { return &generic_stream_; }
+
+ private:
+  Server* const server_;
+  grpc::ServerCompletionQueue* const cq_;
+};
+
+/// UnimplementedAsyncResponse should not post user-visible completions to the
+/// C++ completion queue, but is generated as a CQ event by the core
+class Server::UnimplementedAsyncResponse final
+    : public grpc::internal::CallOpSet<
+          grpc::internal::CallOpSendInitialMetadata,
+          grpc::internal::CallOpServerSendStatus> {
+ public:
+  UnimplementedAsyncResponse(UnimplementedAsyncRequest* request);
+  ~UnimplementedAsyncResponse() { delete request_; }
+
+  bool FinalizeResult(void** tag, bool* status) override {
+    if (grpc::internal::CallOpSet<
+            grpc::internal::CallOpSendInitialMetadata,
+            grpc::internal::CallOpServerSendStatus>::FinalizeResult(tag,
+                                                                    status)) {
+      delete this;
+    } else {
+      // The tag was swallowed due to interception. We will see it again.
+    }
+    return false;
+  }
+
+ private:
+  UnimplementedAsyncRequest* const request_;
+};
+
+class Server::SyncRequest final : public grpc::internal::CompletionQueueTag {
+ public:
+  SyncRequest(grpc::internal::RpcServiceMethod* method, void* method_tag)
+      : method_(method),
+        method_tag_(method_tag),
+        in_flight_(false),
+        has_request_payload_(method->method_type() ==
+                                 grpc::internal::RpcMethod::NORMAL_RPC ||
+                             method->method_type() ==
+                                 grpc::internal::RpcMethod::SERVER_STREAMING),
+        call_details_(nullptr),
+        cq_(nullptr) {
+    grpc_metadata_array_init(&request_metadata_);
+  }
+
+  ~SyncRequest() {
+    if (call_details_) {
+      delete call_details_;
+    }
+    grpc_metadata_array_destroy(&request_metadata_);
+  }
+
+  void SetupRequest() { cq_ = grpc_completion_queue_create_for_pluck(nullptr); }
+
+  void TeardownRequest() {
+    grpc_completion_queue_destroy(cq_);
+    cq_ = nullptr;
+  }
+
+  void Request(grpc_server* server, grpc_completion_queue* notify_cq) {
+    GPR_ASSERT(cq_ && !in_flight_);
+    in_flight_ = true;
+    if (method_tag_) {
+      if (grpc_server_request_registered_call(
+              server, method_tag_, &call_, &deadline_, &request_metadata_,
+              has_request_payload_ ? &request_payload_ : nullptr, cq_,
+              notify_cq, this) != GRPC_CALL_OK) {
+        TeardownRequest();
+        return;
+      }
+    } else {
+      if (!call_details_) {
+        call_details_ = new grpc_call_details;
+        grpc_call_details_init(call_details_);
+      }
+      if (grpc_server_request_call(server, &call_, call_details_,
+                                   &request_metadata_, cq_, notify_cq,
+                                   this) != GRPC_CALL_OK) {
+        TeardownRequest();
+        return;
+      }
+    }
+  }
+
+  void PostShutdownCleanup() {
+    if (call_) {
+      grpc_call_unref(call_);
+      call_ = nullptr;
+    }
+    if (cq_) {
+      grpc_completion_queue_destroy(cq_);
+      cq_ = nullptr;
+    }
+  }
+
+  bool FinalizeResult(void** /*tag*/, bool* status) override {
+    if (!*status) {
+      grpc_completion_queue_destroy(cq_);
+      cq_ = nullptr;
+    }
+    if (call_details_) {
+      deadline_ = call_details_->deadline;
+      grpc_call_details_destroy(call_details_);
+      grpc_call_details_init(call_details_);
+    }
+    return true;
+  }
+
+  // The CallData class represents a call that is "active" as opposed
+  // to just being requested. It wraps and takes ownership of the cq from
+  // the call request
+  class CallData final {
+   public:
+    explicit CallData(Server* server, SyncRequest* mrd)
+        : cq_(mrd->cq_),
+          ctx_(mrd->deadline_, &mrd->request_metadata_),
+          has_request_payload_(mrd->has_request_payload_),
+          request_payload_(has_request_payload_ ? mrd->request_payload_
+                                                : nullptr),
+          request_(nullptr),
+          method_(mrd->method_),
+          call_(
+              mrd->call_, server, &cq_, server->max_receive_message_size(),
+              ctx_.set_server_rpc_info(method_->name(), method_->method_type(),
+                                       server->interceptor_creators_)),
+          server_(server),
+          global_callbacks_(nullptr),
+          resources_(false) {
+      ctx_.set_call(mrd->call_);
+      ctx_.cq_ = &cq_;
+      GPR_ASSERT(mrd->in_flight_);
+      mrd->in_flight_ = false;
+      mrd->request_metadata_.count = 0;
+    }
+
+    ~CallData() {
+      if (has_request_payload_ && request_payload_) {
+        grpc_byte_buffer_destroy(request_payload_);
+      }
+    }
+
+    void Run(const std::shared_ptr<GlobalCallbacks>& global_callbacks,
+             bool resources) {
+      global_callbacks_ = global_callbacks;
+      resources_ = resources;
+
+      interceptor_methods_.SetCall(&call_);
+      interceptor_methods_.SetReverse();
+      // Set interception point for RECV INITIAL METADATA
+      interceptor_methods_.AddInterceptionHookPoint(
+          grpc::experimental::InterceptionHookPoints::
+              POST_RECV_INITIAL_METADATA);
+      interceptor_methods_.SetRecvInitialMetadata(&ctx_.client_metadata_);
+
+      if (has_request_payload_) {
+        // Set interception point for RECV MESSAGE
+        auto* handler = resources_ ? method_->handler()
+                                   : server_->resource_exhausted_handler_.get();
+        request_ = handler->Deserialize(call_.call(), request_payload_,
+                                        &request_status_, nullptr);
+
+        request_payload_ = nullptr;
+        interceptor_methods_.AddInterceptionHookPoint(
+            grpc::experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
+        interceptor_methods_.SetRecvMessage(request_, nullptr);
+      }
+
+      if (interceptor_methods_.RunInterceptors(
+              [this]() { ContinueRunAfterInterception(); })) {
+        ContinueRunAfterInterception();
+      } else {
+        // There were interceptors to be run, so ContinueRunAfterInterception
+        // will be run when interceptors are done.
+      }
+    }
+
+    void ContinueRunAfterInterception() {
+      {
+        ctx_.BeginCompletionOp(&call_, nullptr, nullptr);
+        global_callbacks_->PreSynchronousRequest(&ctx_);
+        auto* handler = resources_ ? method_->handler()
+                                   : server_->resource_exhausted_handler_.get();
+        handler->RunHandler(grpc::internal::MethodHandler::HandlerParameter(
+            &call_, &ctx_, request_, request_status_, nullptr, nullptr));
+        request_ = nullptr;
+        global_callbacks_->PostSynchronousRequest(&ctx_);
+
+        cq_.Shutdown();
+
+        grpc::internal::CompletionQueueTag* op_tag = ctx_.GetCompletionOpTag();
+        cq_.TryPluck(op_tag, gpr_inf_future(GPR_CLOCK_REALTIME));
+
+        /* Ensure the cq_ is shutdown */
+        grpc::DummyTag ignored_tag;
+        GPR_ASSERT(cq_.Pluck(&ignored_tag) == false);
+      }
+      delete this;
+    }
+
+   private:
+    grpc::CompletionQueue cq_;
+    grpc::ServerContext ctx_;
+    const bool has_request_payload_;
+    grpc_byte_buffer* request_payload_;
+    void* request_;
+    grpc::Status request_status_;
+    grpc::internal::RpcServiceMethod* const method_;
+    grpc::internal::Call call_;
+    Server* server_;
+    std::shared_ptr<GlobalCallbacks> global_callbacks_;
+    bool resources_;
+    grpc::internal::InterceptorBatchMethodsImpl interceptor_methods_;
+  };
+
+ private:
+  grpc::internal::RpcServiceMethod* const method_;
+  void* const method_tag_;
+  bool in_flight_;
+  const bool has_request_payload_;
+  grpc_call* call_;
+  grpc_call_details* call_details_;
+  gpr_timespec deadline_;
+  grpc_metadata_array request_metadata_;
+  grpc_byte_buffer* request_payload_;
+  grpc_completion_queue* cq_;
+};
+
+class Server::CallbackRequestBase : public grpc::internal::CompletionQueueTag {
+ public:
+  virtual ~CallbackRequestBase() {}
+  virtual bool Request() = 0;
+};
+
+template <class ServerContextType>
+class Server::CallbackRequest final : public Server::CallbackRequestBase {
+ public:
+  static_assert(
+      std::is_base_of<grpc::CallbackServerContext, ServerContextType>::value,
+      "ServerContextType must be derived from CallbackServerContext");
+
+  // The constructor needs to know the server for this callback request and its
+  // index in the server's request count array to allow for proper dynamic
+  // requesting of incoming RPCs. For codegen services, the values of method and
+  // method_tag represent the defined characteristics of the method being
+  // requested. For generic services, method and method_tag are nullptr since
+  // these services don't have pre-defined methods or method registration tags.
+  CallbackRequest(Server* server, size_t method_idx,
+                  grpc::internal::RpcServiceMethod* method, void* method_tag)
+      : server_(server),
+        method_index_(method_idx),
+        method_(method),
+        method_tag_(method_tag),
+        has_request_payload_(
+            method_ != nullptr &&
+            (method->method_type() == grpc::internal::RpcMethod::NORMAL_RPC ||
+             method->method_type() ==
+                 grpc::internal::RpcMethod::SERVER_STREAMING)),
+        cq_(server->CallbackCQ()),
+        tag_(this) {
+    server_->callback_reqs_outstanding_++;
+    Setup();
+  }
+
+  ~CallbackRequest() {
+    Clear();
+
+    // The counter of outstanding requests must be decremented
+    // under a lock in case it causes the server shutdown.
+    grpc::internal::MutexLock l(&server_->callback_reqs_mu_);
+    if (--server_->callback_reqs_outstanding_ == 0) {
+      server_->callback_reqs_done_cv_.Signal();
+    }
+  }
+
+  bool Request() override {
+    if (method_tag_) {
+      if (grpc_server_request_registered_call(
+              server_->c_server(), method_tag_, &call_, &deadline_,
+              &request_metadata_,
+              has_request_payload_ ? &request_payload_ : nullptr, cq_->cq(),
+              cq_->cq(), static_cast<void*>(&tag_)) != GRPC_CALL_OK) {
+        return false;
+      }
+    } else {
+      if (!call_details_) {
+        call_details_ = new grpc_call_details;
+        grpc_call_details_init(call_details_);
+      }
+      if (grpc_server_request_call(server_->c_server(), &call_, call_details_,
+                                   &request_metadata_, cq_->cq(), cq_->cq(),
+                                   static_cast<void*>(&tag_)) != GRPC_CALL_OK) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  // Needs specialization to account for different processing of metadata
+  // in generic API
+  bool FinalizeResult(void** tag, bool* status) override;
+
+ private:
+  // method_name needs to be specialized between named method and generic
+  const char* method_name() const;
+
+  class CallbackCallTag : public grpc_experimental_completion_queue_functor {
+   public:
+    CallbackCallTag(Server::CallbackRequest<ServerContextType>* req)
+        : req_(req) {
+      functor_run = &CallbackCallTag::StaticRun;
+      // Set inlineable to true since this callback is internally-controlled
+      // without taking any locks, and thus does not need to be run from the
+      // executor (which triggers a thread hop). This should only be used by
+      // internal callbacks like this and not by user application code. The work
+      // here is actually non-trivial, but there is no chance of having user
+      // locks conflict with each other so it's ok to run inlined.
+      inlineable = true;
+    }
+
+    // force_run can not be performed on a tag if operations using this tag
+    // have been sent to PerformOpsOnCall. It is intended for error conditions
+    // that are detected before the operations are internally processed.
+    void force_run(bool ok) { Run(ok); }
+
+   private:
+    Server::CallbackRequest<ServerContextType>* req_;
+    grpc::internal::Call* call_;
+
+    static void StaticRun(grpc_experimental_completion_queue_functor* cb,
+                          int ok) {
+      static_cast<CallbackCallTag*>(cb)->Run(static_cast<bool>(ok));
+    }
+    void Run(bool ok) {
+      void* ignored = req_;
+      bool new_ok = ok;
+      GPR_ASSERT(!req_->FinalizeResult(&ignored, &new_ok));
+      GPR_ASSERT(ignored == req_);
+
+      int count =
+          static_cast<int>(gpr_atm_no_barrier_fetch_add(
+              &req_->server_
+                   ->callback_unmatched_reqs_count_[req_->method_index_],
+              -1)) -
+          1;
+      if (!ok) {
+        // The call has been shutdown.
+        // Delete its contents to free up the request.
+        delete req_;
+        return;
+      }
+
+      // If this was the last request in the list or it is below the soft
+      // minimum and there are spare requests available, set up a new one.
+      if (count == 0 || (count < SOFT_MINIMUM_SPARE_CALLBACK_REQS_PER_METHOD &&
+                         req_->server_->callback_reqs_outstanding_ <
+                             SOFT_MAXIMUM_CALLBACK_REQS_OUTSTANDING)) {
+        auto* new_req = new CallbackRequest<ServerContextType>(
+            req_->server_, req_->method_index_, req_->method_,
+            req_->method_tag_);
+        if (!new_req->Request()) {
+          // The server must have just decided to shutdown.
+          gpr_atm_no_barrier_fetch_add(
+              &new_req->server_
+                   ->callback_unmatched_reqs_count_[new_req->method_index_],
+              -1);
+          delete new_req;
+        }
+      }
+
+      // Bind the call, deadline, and metadata from what we got
+      req_->ctx_.set_call(req_->call_);
+      req_->ctx_.cq_ = req_->cq_;
+      req_->ctx_.BindDeadlineAndMetadata(req_->deadline_,
+                                         &req_->request_metadata_);
+      req_->request_metadata_.count = 0;
+
+      // Create a C++ Call to control the underlying core call
+      call_ =
+          new (grpc_call_arena_alloc(req_->call_, sizeof(grpc::internal::Call)))
+              grpc::internal::Call(
+                  req_->call_, req_->server_, req_->cq_,
+                  req_->server_->max_receive_message_size(),
+                  req_->ctx_.set_server_rpc_info(
+                      req_->method_name(),
+                      (req_->method_ != nullptr)
+                          ? req_->method_->method_type()
+                          : grpc::internal::RpcMethod::BIDI_STREAMING,
+                      req_->server_->interceptor_creators_));
+
+      req_->interceptor_methods_.SetCall(call_);
+      req_->interceptor_methods_.SetReverse();
+      // Set interception point for RECV INITIAL METADATA
+      req_->interceptor_methods_.AddInterceptionHookPoint(
+          grpc::experimental::InterceptionHookPoints::
+              POST_RECV_INITIAL_METADATA);
+      req_->interceptor_methods_.SetRecvInitialMetadata(
+          &req_->ctx_.client_metadata_);
+
+      if (req_->has_request_payload_) {
+        // Set interception point for RECV MESSAGE
+        req_->request_ = req_->method_->handler()->Deserialize(
+            req_->call_, req_->request_payload_, &req_->request_status_,
+            &req_->handler_data_);
+        req_->request_payload_ = nullptr;
+        req_->interceptor_methods_.AddInterceptionHookPoint(
+            grpc::experimental::InterceptionHookPoints::POST_RECV_MESSAGE);
+        req_->interceptor_methods_.SetRecvMessage(req_->request_, nullptr);
+      }
+
+      if (req_->interceptor_methods_.RunInterceptors(
+              [this] { ContinueRunAfterInterception(); })) {
+        ContinueRunAfterInterception();
+      } else {
+        // There were interceptors to be run, so ContinueRunAfterInterception
+        // will be run when interceptors are done.
+      }
+    }
+    void ContinueRunAfterInterception() {
+      auto* handler = (req_->method_ != nullptr)
+                          ? req_->method_->handler()
+                          : req_->server_->generic_handler_.get();
+      handler->RunHandler(grpc::internal::MethodHandler::HandlerParameter(
+          call_, &req_->ctx_, req_->request_, req_->request_status_,
+          req_->handler_data_, [this] {
+            // Recycle this request if there aren't too many outstanding.
+            // Note that we don't have to worry about a case where there
+            // are no requests waiting to match for this method since that
+            // is already taken care of when binding a request to a call.
+            // TODO(vjpai): Also don't recycle this request if the dynamic
+            //              load no longer justifies it. Consider measuring
+            //              dynamic load and setting a target accordingly.
+            if (req_->server_->callback_reqs_outstanding_ <
+                SOFT_MAXIMUM_CALLBACK_REQS_OUTSTANDING) {
+              req_->Clear();
+              req_->Setup();
+            } else {
+              // We can free up this request because there are too many
+              delete req_;
+              return;
+            }
+            if (!req_->Request()) {
+              // The server must have just decided to shutdown.
+              delete req_;
+            }
+          }));
+    }
+  };
+
+  void Clear() {
+    if (call_details_) {
+      delete call_details_;
+      call_details_ = nullptr;
+    }
+    grpc_metadata_array_destroy(&request_metadata_);
+    if (has_request_payload_ && request_payload_) {
+      grpc_byte_buffer_destroy(request_payload_);
+    }
+    ctx_.Clear();
+    interceptor_methods_.ClearState();
+  }
+
+  void Setup() {
+    gpr_atm_no_barrier_fetch_add(
+        &server_->callback_unmatched_reqs_count_[method_index_], 1);
+    grpc_metadata_array_init(&request_metadata_);
+    ctx_.Setup(gpr_inf_future(GPR_CLOCK_REALTIME));
+    request_payload_ = nullptr;
+    request_ = nullptr;
+    handler_data_ = nullptr;
+    request_status_ = grpc::Status();
+  }
+
+  Server* const server_;
+  const size_t method_index_;
+  grpc::internal::RpcServiceMethod* const method_;
+  void* const method_tag_;
+  const bool has_request_payload_;
+  grpc_byte_buffer* request_payload_;
+  void* request_;
+  void* handler_data_;
+  grpc::Status request_status_;
+  grpc_call_details* call_details_ = nullptr;
+  grpc_call* call_;
+  gpr_timespec deadline_;
+  grpc_metadata_array request_metadata_;
+  grpc::CompletionQueue* cq_;
+  CallbackCallTag tag_;
+  ServerContextType ctx_;
+  grpc::internal::InterceptorBatchMethodsImpl interceptor_methods_;
+};
+
+template <>
+bool Server::CallbackRequest<grpc::CallbackServerContext>::FinalizeResult(
+    void** /*tag*/, bool* /*status*/) {
+  return false;
+}
+
+template <>
+bool Server::CallbackRequest<
+    grpc::GenericCallbackServerContext>::FinalizeResult(void** /*tag*/,
+                                                        bool* status) {
+  if (*status) {
+    deadline_ = call_details_->deadline;
+    // TODO(yangg) remove the copy here
+    ctx_.method_ = grpc::StringFromCopiedSlice(call_details_->method);
+    ctx_.host_ = grpc::StringFromCopiedSlice(call_details_->host);
+  }
+  grpc_slice_unref(call_details_->method);
+  grpc_slice_unref(call_details_->host);
+  return false;
+}
+
+template <>
+const char* Server::CallbackRequest<grpc::CallbackServerContext>::method_name()
+    const {
+  return method_->name();
+}
+
+template <>
+const char* Server::CallbackRequest<
+    grpc::GenericCallbackServerContext>::method_name() const {
+  return ctx_.method().c_str();
+}
+
+// Implementation of ThreadManager. Each instance of SyncRequestThreadManager
+// manages a pool of threads that poll for incoming Sync RPCs and call the
+// appropriate RPC handlers
+class Server::SyncRequestThreadManager : public grpc::ThreadManager {
+ public:
+  SyncRequestThreadManager(Server* server, grpc::CompletionQueue* server_cq,
+                           std::shared_ptr<GlobalCallbacks> global_callbacks,
+                           grpc_resource_quota* rq, int min_pollers,
+                           int max_pollers, int cq_timeout_msec)
+      : ThreadManager("SyncServer", rq, min_pollers, max_pollers),
+        server_(server),
+        server_cq_(server_cq),
+        cq_timeout_msec_(cq_timeout_msec),
+        global_callbacks_(std::move(global_callbacks)) {}
+
+  WorkStatus PollForWork(void** tag, bool* ok) override {
+    *tag = nullptr;
+    // TODO(ctiller): workaround for GPR_TIMESPAN based deadlines not working
+    // right now
+    gpr_timespec deadline =
+        gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                     gpr_time_from_millis(cq_timeout_msec_, GPR_TIMESPAN));
+
+    switch (server_cq_->AsyncNext(tag, ok, deadline)) {
+      case grpc::CompletionQueue::TIMEOUT:
+        return TIMEOUT;
+      case grpc::CompletionQueue::SHUTDOWN:
+        return SHUTDOWN;
+      case grpc::CompletionQueue::GOT_EVENT:
+        return WORK_FOUND;
+    }
+
+    GPR_UNREACHABLE_CODE(return TIMEOUT);
+  }
+
+  void DoWork(void* tag, bool ok, bool resources) override {
+    SyncRequest* sync_req = static_cast<SyncRequest*>(tag);
+
+    if (!sync_req) {
+      // No tag. Nothing to work on. This is an unlikley scenario and possibly a
+      // bug in RPC Manager implementation.
+      gpr_log(GPR_ERROR, "Sync server. DoWork() was called with NULL tag");
+      return;
+    }
+
+    if (ok) {
+      // Calldata takes ownership of the completion queue and interceptors
+      // inside sync_req
+      auto* cd = new SyncRequest::CallData(server_, sync_req);
+      // Prepare for the next request
+      if (!IsShutdown()) {
+        sync_req->SetupRequest();  // Create new completion queue for sync_req
+        sync_req->Request(server_->c_server(), server_cq_->cq());
+      }
+
+      GPR_TIMER_SCOPE("cd.Run()", 0);
+      cd->Run(global_callbacks_, resources);
+    }
+    // TODO (sreek) If ok is false here (which it isn't in case of
+    // grpc_request_registered_call), we should still re-queue the request
+    // object
+  }
+
+  void AddSyncMethod(grpc::internal::RpcServiceMethod* method, void* tag) {
+    sync_requests_.emplace_back(new SyncRequest(method, tag));
+  }
+
+  void AddUnknownSyncMethod() {
+    if (!sync_requests_.empty()) {
+      unknown_method_.reset(new grpc::internal::RpcServiceMethod(
+          "unknown", grpc::internal::RpcMethod::BIDI_STREAMING,
+          new grpc::internal::UnknownMethodHandler));
+      sync_requests_.emplace_back(
+          new SyncRequest(unknown_method_.get(), nullptr));
+    }
+  }
+
+  void Shutdown() override {
+    ThreadManager::Shutdown();
+    server_cq_->Shutdown();
+  }
+
+  void Wait() override {
+    ThreadManager::Wait();
+    // Drain any pending items from the queue
+    void* tag;
+    bool ok;
+    while (server_cq_->Next(&tag, &ok)) {
+      if (ok) {
+        // If a request was pulled off the queue, it means that the thread
+        // handling the request added it to the completion queue after shutdown
+        // was called - because the thread had already started and checked the
+        // shutdown flag before shutdown was called. In this case, we simply
+        // clean it up here, *after* calling wait on all the worker threads, at
+        // which point we are certain no in-flight requests will add more to the
+        // queue. This fixes an intermittent memory leak on shutdown.
+        SyncRequest* sync_req = static_cast<SyncRequest*>(tag);
+        sync_req->PostShutdownCleanup();
+      }
+    }
+  }
+
+  void Start() {
+    if (!sync_requests_.empty()) {
+      for (const auto& value : sync_requests_) {
+        value->SetupRequest();
+        value->Request(server_->c_server(), server_cq_->cq());
+      }
+
+      Initialize();  // ThreadManager's Initialize()
+    }
+  }
+
+ private:
+  Server* server_;
+  grpc::CompletionQueue* server_cq_;
+  int cq_timeout_msec_;
+  std::vector<std::unique_ptr<SyncRequest>> sync_requests_;
+  std::unique_ptr<grpc::internal::RpcServiceMethod> unknown_method_;
+  std::shared_ptr<Server::GlobalCallbacks> global_callbacks_;
+};
+
+static grpc::internal::GrpcLibraryInitializer g_gli_initializer;
+Server::Server(
+    grpc::ChannelArguments* args,
+    std::shared_ptr<std::vector<std::unique_ptr<grpc::ServerCompletionQueue>>>
+        sync_server_cqs,
+    int min_pollers, int max_pollers, int sync_cq_timeout_msec,
+    std::vector<std::shared_ptr<grpc::internal::ExternalConnectionAcceptorImpl>>
+        acceptors,
+    grpc_resource_quota* server_rq,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ServerInterceptorFactoryInterface>>
+        interceptor_creators)
+    : acceptors_(std::move(acceptors)),
+      interceptor_creators_(std::move(interceptor_creators)),
+      max_receive_message_size_(INT_MIN),
+      sync_server_cqs_(std::move(sync_server_cqs)),
+      started_(false),
+      shutdown_(false),
+      shutdown_notified_(false),
+      server_(nullptr),
+      server_initializer_(new grpc_impl::ServerInitializer(this)),
+      health_check_service_disabled_(false) {
+  g_gli_initializer.summon();
+  gpr_once_init(&grpc::g_once_init_callbacks, grpc::InitGlobalCallbacks);
+  global_callbacks_ = grpc::g_callbacks;
+  global_callbacks_->UpdateArguments(args);
+
+  if (sync_server_cqs_ != nullptr) {
+    bool default_rq_created = false;
+    if (server_rq == nullptr) {
+      server_rq = grpc_resource_quota_create("SyncServer-default-rq");
+      grpc_resource_quota_set_max_threads(server_rq,
+                                          DEFAULT_MAX_SYNC_SERVER_THREADS);
+      default_rq_created = true;
+    }
+
+    for (const auto& it : *sync_server_cqs_) {
+      sync_req_mgrs_.emplace_back(new SyncRequestThreadManager(
+          this, it.get(), global_callbacks_, server_rq, min_pollers,
+          max_pollers, sync_cq_timeout_msec));
+    }
+
+    if (default_rq_created) {
+      grpc_resource_quota_unref(server_rq);
+    }
+  }
+
+  for (auto& acceptor : acceptors_) {
+    acceptor->SetToChannelArgs(args);
+  }
+
+  grpc_channel_args channel_args;
+  args->SetChannelArgs(&channel_args);
+
+  for (size_t i = 0; i < channel_args.num_args; i++) {
+    if (0 == strcmp(channel_args.args[i].key,
+                    grpc::kHealthCheckServiceInterfaceArg)) {
+      if (channel_args.args[i].value.pointer.p == nullptr) {
+        health_check_service_disabled_ = true;
+      } else {
+        health_check_service_.reset(
+            static_cast<grpc::HealthCheckServiceInterface*>(
+                channel_args.args[i].value.pointer.p));
+      }
+    }
+    if (0 ==
+        strcmp(channel_args.args[i].key, GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH)) {
+      max_receive_message_size_ = channel_args.args[i].value.integer;
+    }
+  }
+  server_ = grpc_server_create(&channel_args, nullptr);
+}
+
+Server::~Server() {
+  {
+    grpc::internal::ReleasableMutexLock lock(&mu_);
+    if (started_ && !shutdown_) {
+      lock.Unlock();
+      Shutdown();
+    } else if (!started_) {
+      // Shutdown the completion queues
+      for (const auto& value : sync_req_mgrs_) {
+        value->Shutdown();
+      }
+      if (callback_cq_ != nullptr) {
+        callback_cq_->Shutdown();
+        callback_cq_ = nullptr;
+      }
+    }
+  }
+
+  grpc_server_destroy(server_);
+  for (auto& per_method_count : callback_unmatched_reqs_count_) {
+    // There should be no more unmatched callbacks for any method
+    // as each request is failed by Shutdown. Check that this actually
+    // happened
+    GPR_ASSERT(static_cast<int>(gpr_atm_no_barrier_load(&per_method_count)) ==
+               0);
+  }
+}
+
+void Server::SetGlobalCallbacks(GlobalCallbacks* callbacks) {
+  GPR_ASSERT(!grpc::g_callbacks);
+  GPR_ASSERT(callbacks);
+  grpc::g_callbacks.reset(callbacks);
+}
+
+grpc_server* Server::c_server() { return server_; }
+
+std::shared_ptr<grpc::Channel> Server::InProcessChannel(
+    const grpc::ChannelArguments& args) {
+  grpc_channel_args channel_args = args.c_channel_args();
+  return grpc::CreateChannelInternal(
+      "inproc", grpc_inproc_channel_create(server_, &channel_args, nullptr),
+      std::vector<std::unique_ptr<
+          grpc::experimental::ClientInterceptorFactoryInterface>>());
+}
+
+std::shared_ptr<grpc::Channel>
+Server::experimental_type::InProcessChannelWithInterceptors(
+    const grpc::ChannelArguments& args,
+    std::vector<
+        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
+        interceptor_creators) {
+  grpc_channel_args channel_args = args.c_channel_args();
+  return grpc::CreateChannelInternal(
+      "inproc",
+      grpc_inproc_channel_create(server_->server_, &channel_args, nullptr),
+      std::move(interceptor_creators));
+}
+
+static grpc_server_register_method_payload_handling PayloadHandlingForMethod(
+    grpc::internal::RpcServiceMethod* method) {
+  switch (method->method_type()) {
+    case grpc::internal::RpcMethod::NORMAL_RPC:
+    case grpc::internal::RpcMethod::SERVER_STREAMING:
+      return GRPC_SRM_PAYLOAD_READ_INITIAL_BYTE_BUFFER;
+    case grpc::internal::RpcMethod::CLIENT_STREAMING:
+    case grpc::internal::RpcMethod::BIDI_STREAMING:
+      return GRPC_SRM_PAYLOAD_NONE;
+  }
+  GPR_UNREACHABLE_CODE(return GRPC_SRM_PAYLOAD_NONE;);
+}
+
+bool Server::RegisterService(const grpc::string* host, grpc::Service* service) {
+  bool has_async_methods = service->has_async_methods();
+  if (has_async_methods) {
+    GPR_ASSERT(service->server_ == nullptr &&
+               "Can only register an asynchronous service against one server.");
+    service->server_ = this;
+  }
+
+  const char* method_name = nullptr;
+
+  for (const auto& method : service->methods_) {
+    if (method.get() == nullptr) {  // Handled by generic service if any.
+      continue;
+    }
+
+    void* method_registration_tag = grpc_server_register_method(
+        server_, method->name(), host ? host->c_str() : nullptr,
+        PayloadHandlingForMethod(method.get()), 0);
+    if (method_registration_tag == nullptr) {
+      gpr_log(GPR_DEBUG, "Attempt to register %s multiple times",
+              method->name());
+      return false;
+    }
+
+    if (method->handler() == nullptr) {  // Async method without handler
+      method->set_server_tag(method_registration_tag);
+    } else if (method->api_type() ==
+               grpc::internal::RpcServiceMethod::ApiType::SYNC) {
+      for (const auto& value : sync_req_mgrs_) {
+        value->AddSyncMethod(method.get(), method_registration_tag);
+      }
+    } else {
+      // a callback method. Register at least some callback requests
+      callback_unmatched_reqs_count_.push_back(0);
+      auto method_index = callback_unmatched_reqs_count_.size() - 1;
+      // TODO(vjpai): Register these dynamically based on need
+      for (int i = 0; i < DEFAULT_CALLBACK_REQS_PER_METHOD; i++) {
+        callback_reqs_to_start_.push_back(
+            new CallbackRequest<grpc::CallbackServerContext>(
+                this, method_index, method.get(), method_registration_tag));
+      }
+      // Enqueue it so that it will be Request'ed later after all request
+      // matchers are created at core server startup
+    }
+
+    method_name = method->name();
+  }
+
+  // Parse service name.
+  if (method_name != nullptr) {
+    std::stringstream ss(method_name);
+    grpc::string service_name;
+    if (std::getline(ss, service_name, '/') &&
+        std::getline(ss, service_name, '/')) {
+      services_.push_back(service_name);
+    }
+  }
+  return true;
+}
+
+void Server::RegisterAsyncGenericService(grpc::AsyncGenericService* service) {
+  GPR_ASSERT(service->server_ == nullptr &&
+             "Can only register an async generic service against one server.");
+  service->server_ = this;
+  has_async_generic_service_ = true;
+}
+
+void Server::RegisterCallbackGenericService(
+    grpc::CallbackGenericService* service) {
+  GPR_ASSERT(
+      service->server_ == nullptr &&
+      "Can only register a callback generic service against one server.");
+  service->server_ = this;
+  has_callback_generic_service_ = true;
+  generic_handler_.reset(service->Handler());
+
+  callback_unmatched_reqs_count_.push_back(0);
+  auto method_index = callback_unmatched_reqs_count_.size() - 1;
+  // TODO(vjpai): Register these dynamically based on need
+  for (int i = 0; i < DEFAULT_CALLBACK_REQS_PER_METHOD; i++) {
+    callback_reqs_to_start_.push_back(
+        new CallbackRequest<grpc::GenericCallbackServerContext>(
+            this, method_index, nullptr, nullptr));
+  }
+}
+
+int Server::AddListeningPort(const grpc::string& addr,
+                             grpc::ServerCredentials* creds) {
+  GPR_ASSERT(!started_);
+  int port = creds->AddPortToServer(addr, server_);
+  global_callbacks_->AddPort(this, addr, creds, port);
+  return port;
+}
+
+void Server::Start(grpc::ServerCompletionQueue** cqs, size_t num_cqs) {
+  GPR_ASSERT(!started_);
+  global_callbacks_->PreServerStart(this);
+  started_ = true;
+
+  // Only create default health check service when user did not provide an
+  // explicit one.
+  grpc::ServerCompletionQueue* health_check_cq = nullptr;
+  grpc::DefaultHealthCheckService::HealthCheckServiceImpl*
+      default_health_check_service_impl = nullptr;
+  if (health_check_service_ == nullptr && !health_check_service_disabled_ &&
+      grpc::DefaultHealthCheckServiceEnabled()) {
+    auto* default_hc_service = new grpc::DefaultHealthCheckService;
+    health_check_service_.reset(default_hc_service);
+    // We create a non-polling CQ to avoid impacting application
+    // performance.  This ensures that we don't introduce thread hops
+    // for application requests that wind up on this CQ, which is polled
+    // in its own thread.
+    health_check_cq = new grpc::ServerCompletionQueue(
+        GRPC_CQ_NEXT, GRPC_CQ_NON_POLLING, nullptr);
+    grpc_server_register_completion_queue(server_, health_check_cq->cq(),
+                                          nullptr);
+    default_health_check_service_impl =
+        default_hc_service->GetHealthCheckService(
+            std::unique_ptr<grpc::ServerCompletionQueue>(health_check_cq));
+    RegisterService(nullptr, default_health_check_service_impl);
+  }
+
+  for (auto& acceptor : acceptors_) {
+    acceptor->GetCredentials()->AddPortToServer(acceptor->name(), server_);
+  }
+
+  // If this server uses callback methods, then create a callback generic
+  // service to handle any unimplemented methods using the default reactor
+  // creator
+  if (!callback_reqs_to_start_.empty() && !has_callback_generic_service_) {
+    unimplemented_service_.reset(new grpc::CallbackGenericService);
+    RegisterCallbackGenericService(unimplemented_service_.get());
+  }
+
+  grpc_server_start(server_);
+
+  if (!has_async_generic_service_ && !has_callback_generic_service_) {
+    for (const auto& value : sync_req_mgrs_) {
+      value->AddUnknownSyncMethod();
+    }
+
+    for (size_t i = 0; i < num_cqs; i++) {
+#ifndef NDEBUG
+      cq_list_.push_back(cqs[i]);
+#endif
+      if (cqs[i]->IsFrequentlyPolled()) {
+        new UnimplementedAsyncRequest(this, cqs[i]);
+      }
+    }
+    if (health_check_cq != nullptr) {
+      new UnimplementedAsyncRequest(this, health_check_cq);
+    }
+  }
+
+  // If this server has any support for synchronous methods (has any sync
+  // server CQs), make sure that we have a ResourceExhausted handler
+  // to deal with the case of thread exhaustion
+  if (sync_server_cqs_ != nullptr && !sync_server_cqs_->empty()) {
+    resource_exhausted_handler_.reset(
+        new grpc::internal::ResourceExhaustedHandler);
+  }
+
+  for (const auto& value : sync_req_mgrs_) {
+    value->Start();
+  }
+
+  for (auto* cbreq : callback_reqs_to_start_) {
+    GPR_ASSERT(cbreq->Request());
+  }
+  callback_reqs_to_start_.clear();
+
+  if (default_health_check_service_impl != nullptr) {
+    default_health_check_service_impl->StartServingThread();
+  }
+
+  for (auto& acceptor : acceptors_) {
+    acceptor->Start();
+  }
+}
+
+void Server::ShutdownInternal(gpr_timespec deadline) {
+  grpc::internal::MutexLock lock(&mu_);
+  if (shutdown_) {
+    return;
+  }
+
+  shutdown_ = true;
+
+  for (auto& acceptor : acceptors_) {
+    acceptor->Shutdown();
+  }
+
+  /// The completion queue to use for server shutdown completion notification
+  grpc::CompletionQueue shutdown_cq;
+  grpc::ShutdownTag shutdown_tag;  // Dummy shutdown tag
+  grpc_server_shutdown_and_notify(server_, shutdown_cq.cq(), &shutdown_tag);
+
+  shutdown_cq.Shutdown();
+
+  void* tag;
+  bool ok;
+  grpc::CompletionQueue::NextStatus status =
+      shutdown_cq.AsyncNext(&tag, &ok, deadline);
+
+  // If this timed out, it means we are done with the grace period for a clean
+  // shutdown. We should force a shutdown now by cancelling all inflight calls
+  if (status == grpc::CompletionQueue::NextStatus::TIMEOUT) {
+    grpc_server_cancel_all_calls(server_);
+  }
+  // Else in case of SHUTDOWN or GOT_EVENT, it means that the server has
+  // successfully shutdown
+
+  // Shutdown all ThreadManagers. This will try to gracefully stop all the
+  // threads in the ThreadManagers (once they process any inflight requests)
+  for (const auto& value : sync_req_mgrs_) {
+    value->Shutdown();  // ThreadManager's Shutdown()
+  }
+
+  // Wait for threads in all ThreadManagers to terminate
+  for (const auto& value : sync_req_mgrs_) {
+    value->Wait();
+  }
+
+  // Wait for all outstanding callback requests to complete
+  // (whether waiting for a match or already active).
+  // We know that no new requests will be created after this point
+  // because they are only created at server startup time or when
+  // we have a successful match on a request. During the shutdown phase,
+  // requests that have not yet matched will be failed rather than
+  // allowed to succeed, which will cause the server to delete the
+  // request and decrement the count. Possibly a request will match before
+  // the shutdown but then find that shutdown has already started by the
+  // time it tries to register a new request. In that case, the registration
+  // will report a failure, indicating a shutdown and again we won't end
+  // up incrementing the counter.
+  {
+    grpc::internal::MutexLock cblock(&callback_reqs_mu_);
+    callback_reqs_done_cv_.WaitUntil(
+        &callback_reqs_mu_, [this] { return callback_reqs_outstanding_ == 0; });
+  }
+
+  // Shutdown the callback CQ. The CQ is owned by its own shutdown tag, so it
+  // will delete itself at true shutdown.
+  if (callback_cq_ != nullptr) {
+    callback_cq_->Shutdown();
+    callback_cq_ = nullptr;
+  }
+
+  // Drain the shutdown queue (if the previous call to AsyncNext() timed out
+  // and we didn't remove the tag from the queue yet)
+  while (shutdown_cq.Next(&tag, &ok)) {
+    // Nothing to be done here. Just ignore ok and tag values
+  }
+
+  shutdown_notified_ = true;
+  shutdown_cv_.Broadcast();
+
+#ifndef NDEBUG
+  // Unregister this server with the CQs passed into it by the user so that
+  // those can be checked for properly-ordered shutdown.
+  for (auto* cq : cq_list_) {
+    cq->UnregisterServer(this);
+  }
+  cq_list_.clear();
+#endif
+}
+
+void Server::Wait() {
+  grpc::internal::MutexLock lock(&mu_);
+  while (started_ && !shutdown_notified_) {
+    shutdown_cv_.Wait(&mu_);
+  }
+}
+
+void Server::PerformOpsOnCall(grpc::internal::CallOpSetInterface* ops,
+                              grpc::internal::Call* call) {
+  ops->FillOps(call);
+}
+
+bool Server::UnimplementedAsyncRequest::FinalizeResult(void** tag,
+                                                       bool* status) {
+  if (GenericAsyncRequest::FinalizeResult(tag, status)) {
+    // We either had no interceptors run or we are done intercepting
+    if (*status) {
+      new UnimplementedAsyncRequest(server_, cq_);
+      new UnimplementedAsyncResponse(this);
+    } else {
+      delete this;
+    }
+  } else {
+    // The tag was swallowed due to interception. We will see it again.
+  }
+  return false;
+}
+
+Server::UnimplementedAsyncResponse::UnimplementedAsyncResponse(
+    UnimplementedAsyncRequest* request)
+    : request_(request) {
+  grpc::Status status(grpc::StatusCode::UNIMPLEMENTED, "");
+  grpc::internal::UnknownMethodHandler::FillOps(request_->context(), this);
+  request_->stream()->call_.PerformOps(this);
+}
+
+grpc::ServerInitializer* Server::initializer() {
+  return server_initializer_.get();
+}
+
+grpc::CompletionQueue* Server::CallbackCQ() {
+  // TODO(vjpai): Consider using a single global CQ for the default CQ
+  // if there is no explicit per-server CQ registered
+  grpc::internal::MutexLock l(&mu_);
+  if (callback_cq_ == nullptr) {
+    auto* shutdown_callback = new grpc::ShutdownCallback;
+    callback_cq_ = new grpc::CompletionQueue(grpc_completion_queue_attributes{
+        GRPC_CQ_CURRENT_VERSION, GRPC_CQ_CALLBACK, GRPC_CQ_DEFAULT_POLLING,
+        shutdown_callback});
+
+    // Transfer ownership of the new cq to its own shutdown callback
+    shutdown_callback->TakeCQ(callback_cq_);
+  }
+  return callback_cq_;
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_context.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_context.cc
new file mode 100644
index 0000000..1c8e1e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_context.cc	
@@ -0,0 +1,380 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/impl/codegen/server_context_impl.h>
+
+#include <algorithm>
+#include <utility>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/load_reporting.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpcpp/impl/call.h>
+#include <grpcpp/impl/codegen/completion_queue_impl.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/support/time.h>
+
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/surface/call.h"
+
+namespace grpc_impl {
+
+// CompletionOp
+
+class ServerContextBase::CompletionOp final
+    : public ::grpc::internal::CallOpSetInterface {
+ public:
+  // initial refs: one in the server context, one in the cq
+  // must ref the call before calling constructor and after deleting this
+  CompletionOp(::grpc::internal::Call* call,
+               ::grpc_impl::internal::ServerCallbackCall* callback_controller)
+      : call_(*call),
+        callback_controller_(callback_controller),
+        has_tag_(false),
+        tag_(nullptr),
+        core_cq_tag_(this),
+        refs_(2),
+        finalized_(false),
+        cancelled_(0),
+        done_intercepting_(false) {}
+
+  // CompletionOp isn't copyable or movable
+  CompletionOp(const CompletionOp&) = delete;
+  CompletionOp& operator=(const CompletionOp&) = delete;
+  CompletionOp(CompletionOp&&) = delete;
+  CompletionOp& operator=(CompletionOp&&) = delete;
+
+  ~CompletionOp() {
+    if (call_.server_rpc_info()) {
+      call_.server_rpc_info()->Unref();
+    }
+  }
+
+  void FillOps(::grpc::internal::Call* call) override;
+
+  // This should always be arena allocated in the call, so override delete.
+  // But this class is not trivially destructible, so must actually call delete
+  // before allowing the arena to be freed
+  static void operator delete(void* /*ptr*/, std::size_t size) {
+    // Use size to avoid unused-parameter warning since assert seems to be
+    // compiled out and treated as unused in some gcc optimized versions.
+    (void)size;
+    assert(size == sizeof(CompletionOp));
+  }
+
+  // This operator should never be called as the memory should be freed as part
+  // of the arena destruction. It only exists to provide a matching operator
+  // delete to the operator new so that some compilers will not complain (see
+  // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+  // there are no tests catching the compiler warning.
+  static void operator delete(void*, void*) { assert(0); }
+
+  bool FinalizeResult(void** tag, bool* status) override;
+
+  bool CheckCancelled(CompletionQueue* cq) {
+    cq->TryPluck(this);
+    return CheckCancelledNoPluck();
+  }
+  bool CheckCancelledAsync() { return CheckCancelledNoPluck(); }
+
+  void set_tag(void* tag) {
+    has_tag_ = true;
+    tag_ = tag;
+  }
+
+  void set_core_cq_tag(void* core_cq_tag) { core_cq_tag_ = core_cq_tag; }
+
+  void* core_cq_tag() override { return core_cq_tag_; }
+
+  void Unref();
+
+  // This will be called while interceptors are run if the RPC is a hijacked
+  // RPC. This should set hijacking state for each of the ops.
+  void SetHijackingState() override {
+    /* Servers don't allow hijacking */
+    GPR_ASSERT(false);
+  }
+
+  /* Should be called after interceptors are done running */
+  void ContinueFillOpsAfterInterception() override {}
+
+  /* Should be called after interceptors are done running on the finalize result
+   * path */
+  void ContinueFinalizeResultAfterInterception() override {
+    done_intercepting_ = true;
+    if (!has_tag_) {
+      /* We don't have a tag to return. */
+      Unref();
+      return;
+    }
+    /* Start a dummy op so that we can return the tag */
+    GPR_ASSERT(grpc_call_start_batch(call_.call(), nullptr, 0, core_cq_tag_,
+                                     nullptr) == GRPC_CALL_OK);
+  }
+
+ private:
+  bool CheckCancelledNoPluck() {
+    grpc_core::MutexLock lock(&mu_);
+    return finalized_ ? (cancelled_ != 0) : false;
+  }
+
+  ::grpc::internal::Call call_;
+  ::grpc_impl::internal::ServerCallbackCall* const callback_controller_;
+  bool has_tag_;
+  void* tag_;
+  void* core_cq_tag_;
+  grpc_core::RefCount refs_;
+  grpc_core::Mutex mu_;
+  bool finalized_;
+  int cancelled_;  // This is an int (not bool) because it is passed to core
+  bool done_intercepting_;
+  ::grpc::internal::InterceptorBatchMethodsImpl interceptor_methods_;
+};
+
+void ServerContextBase::CompletionOp::Unref() {
+  if (refs_.Unref()) {
+    grpc_call* call = call_.call();
+    delete this;
+    grpc_call_unref(call);
+  }
+}
+
+void ServerContextBase::CompletionOp::FillOps(::grpc::internal::Call* call) {
+  grpc_op ops;
+  ops.op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  ops.data.recv_close_on_server.cancelled = &cancelled_;
+  ops.flags = 0;
+  ops.reserved = nullptr;
+  interceptor_methods_.SetCall(&call_);
+  interceptor_methods_.SetReverse();
+  interceptor_methods_.SetCallOpSetInterface(this);
+  // The following call_start_batch is internally-generated so no need for an
+  // explanatory log on failure.
+  GPR_ASSERT(grpc_call_start_batch(call->call(), &ops, 1, core_cq_tag_,
+                                   nullptr) == GRPC_CALL_OK);
+  /* No interceptors to run here */
+}
+
+bool ServerContextBase::CompletionOp::FinalizeResult(void** tag, bool* status) {
+  bool ret = false;
+  grpc_core::ReleasableMutexLock lock(&mu_);
+  if (done_intercepting_) {
+    /* We are done intercepting. */
+    if (has_tag_) {
+      *tag = tag_;
+      ret = true;
+    }
+    Unref();
+    return ret;
+  }
+  finalized_ = true;
+
+  // If for some reason the incoming status is false, mark that as a
+  // cancellation.
+  // TODO(vjpai): does this ever happen?
+  if (!*status) {
+    cancelled_ = 1;
+  }
+
+  // Decide whether to call the cancel callback before releasing the lock
+  bool call_cancel = (cancelled_ != 0);
+
+  // Release the lock since we may call a callback and interceptors now.
+  lock.Unlock();
+
+  if (call_cancel && callback_controller_ != nullptr) {
+    callback_controller_->MaybeCallOnCancel();
+  }
+  /* Add interception point and run through interceptors */
+  interceptor_methods_.AddInterceptionHookPoint(
+      ::grpc::experimental::InterceptionHookPoints::POST_RECV_CLOSE);
+  if (interceptor_methods_.RunInterceptors()) {
+    /* No interceptors were run */
+    if (has_tag_) {
+      *tag = tag_;
+      ret = true;
+    }
+    Unref();
+    return ret;
+  }
+  /* There are interceptors to be run. Return false for now */
+  return false;
+}
+
+// ServerContextBase body
+
+ServerContextBase::ServerContextBase() {
+  Setup(gpr_inf_future(GPR_CLOCK_REALTIME));
+}
+
+ServerContextBase::ServerContextBase(gpr_timespec deadline,
+                                     grpc_metadata_array* arr) {
+  Setup(deadline);
+  std::swap(*client_metadata_.arr(), *arr);
+}
+
+void ServerContextBase::Setup(gpr_timespec deadline) {
+  completion_op_ = nullptr;
+  has_notify_when_done_tag_ = false;
+  async_notify_when_done_tag_ = nullptr;
+  deadline_ = deadline;
+  call_ = nullptr;
+  cq_ = nullptr;
+  sent_initial_metadata_ = false;
+  compression_level_set_ = false;
+  has_pending_ops_ = false;
+  rpc_info_ = nullptr;
+}
+
+void ServerContextBase::BindDeadlineAndMetadata(gpr_timespec deadline,
+                                                grpc_metadata_array* arr) {
+  deadline_ = deadline;
+  std::swap(*client_metadata_.arr(), *arr);
+}
+
+ServerContextBase::~ServerContextBase() { Clear(); }
+
+void ServerContextBase::Clear() {
+  auth_context_.reset();
+  initial_metadata_.clear();
+  trailing_metadata_.clear();
+  client_metadata_.Reset();
+  if (completion_op_) {
+    completion_op_->Unref();
+    completion_op_ = nullptr;
+    completion_tag_.Clear();
+  }
+  if (rpc_info_) {
+    rpc_info_->Unref();
+    rpc_info_ = nullptr;
+  }
+  if (call_) {
+    auto* call = call_;
+    call_ = nullptr;
+    grpc_call_unref(call);
+  }
+  if (default_reactor_used_.load(std::memory_order_relaxed)) {
+    reinterpret_cast<Reactor*>(&default_reactor_)->~Reactor();
+    default_reactor_used_.store(false, std::memory_order_relaxed);
+  }
+  test_unary_.reset();
+}
+
+void ServerContextBase::BeginCompletionOp(
+    ::grpc::internal::Call* call, std::function<void(bool)> callback,
+    ::grpc_impl::internal::ServerCallbackCall* callback_controller) {
+  GPR_ASSERT(!completion_op_);
+  if (rpc_info_) {
+    rpc_info_->Ref();
+  }
+  grpc_call_ref(call->call());
+  completion_op_ =
+      new (grpc_call_arena_alloc(call->call(), sizeof(CompletionOp)))
+          CompletionOp(call, callback_controller);
+  if (callback_controller != nullptr) {
+    completion_tag_.Set(call->call(), std::move(callback), completion_op_,
+                        true);
+    completion_op_->set_core_cq_tag(&completion_tag_);
+    completion_op_->set_tag(completion_op_);
+  } else if (has_notify_when_done_tag_) {
+    completion_op_->set_tag(async_notify_when_done_tag_);
+  }
+  call->PerformOps(completion_op_);
+}
+
+::grpc::internal::CompletionQueueTag* ServerContextBase::GetCompletionOpTag() {
+  return static_cast<::grpc::internal::CompletionQueueTag*>(completion_op_);
+}
+
+void ServerContextBase::AddInitialMetadata(const grpc::string& key,
+                                           const grpc::string& value) {
+  initial_metadata_.insert(std::make_pair(key, value));
+}
+
+void ServerContextBase::AddTrailingMetadata(const grpc::string& key,
+                                            const grpc::string& value) {
+  trailing_metadata_.insert(std::make_pair(key, value));
+}
+
+void ServerContextBase::TryCancel() const {
+  ::grpc::internal::CancelInterceptorBatchMethods cancel_methods;
+  if (rpc_info_) {
+    for (size_t i = 0; i < rpc_info_->interceptors_.size(); i++) {
+      rpc_info_->RunInterceptor(&cancel_methods, i);
+    }
+  }
+  grpc_call_error err = grpc_call_cancel_with_status(
+      call_, GRPC_STATUS_CANCELLED, "Cancelled on the server side", nullptr);
+  if (err != GRPC_CALL_OK) {
+    gpr_log(GPR_ERROR, "TryCancel failed with: %d", err);
+  }
+}
+
+bool ServerContextBase::IsCancelled() const {
+  if (completion_tag_) {
+    // When using callback API, this result is always valid.
+    return completion_op_->CheckCancelledAsync();
+  } else if (has_notify_when_done_tag_) {
+    // When using async API, the result is only valid
+    // if the tag has already been delivered at the completion queue
+    return completion_op_ && completion_op_->CheckCancelledAsync();
+  } else {
+    // when using sync API, the result is always valid
+    return completion_op_ && completion_op_->CheckCancelled(cq_);
+  }
+}
+
+void ServerContextBase::set_compression_algorithm(
+    grpc_compression_algorithm algorithm) {
+  compression_algorithm_ = algorithm;
+  const char* algorithm_name = nullptr;
+  if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
+    gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",
+            algorithm);
+    abort();
+  }
+  GPR_ASSERT(algorithm_name != nullptr);
+  AddInitialMetadata(GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY, algorithm_name);
+}
+
+grpc::string ServerContextBase::peer() const {
+  grpc::string peer;
+  if (call_) {
+    char* c_peer = grpc_call_get_peer(call_);
+    peer = c_peer;
+    gpr_free(c_peer);
+  }
+  return peer;
+}
+
+const struct census_context* ServerContextBase::census_context() const {
+  return grpc_census_call_get_context(call_);
+}
+
+void ServerContextBase::SetLoadReportingCosts(
+    const std::vector<grpc::string>& cost_data) {
+  if (call_ == nullptr) return;
+  for (const auto& cost_datum : cost_data) {
+    AddTrailingMetadata(GRPC_LB_COST_MD_KEY, cost_datum);
+  }
+}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_credentials.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_credentials.cc
new file mode 100644
index 0000000..8b85264
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_credentials.cc	
@@ -0,0 +1,25 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/security/server_credentials_impl.h>
+
+namespace grpc_impl {
+
+ServerCredentials::~ServerCredentials() {}
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_posix.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_posix.cc
new file mode 100644
index 0000000..7b77e24
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/server_posix.cc	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/server_posix.h>
+
+#include <grpc/grpc_posix.h>
+
+namespace grpc_impl {
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+void AddInsecureChannelFromFd(grpc::Server* server, int fd) {
+  grpc_server_add_insecure_channel_from_fd(server->c_server(), nullptr, fd);
+}
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+}  // namespace grpc_impl
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/thread_pool_interface.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/thread_pool_interface.h
new file mode 100644
index 0000000..028842a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/server/thread_pool_interface.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_THREAD_POOL_INTERFACE_H
+#define GRPC_INTERNAL_CPP_THREAD_POOL_INTERFACE_H
+
+#include <functional>
+
+namespace grpc {
+
+// A thread pool interface for running callbacks.
+class ThreadPoolInterface {
+ public:
+  virtual ~ThreadPoolInterface() {}
+
+  // Schedule the given callback for execution.
+  virtual void Add(const std::function<void()>& callback) = 0;
+};
+
+// Allows different codebases to use their own thread pool impls
+typedef ThreadPoolInterface* (*CreateThreadPoolFunc)(void);
+void SetCreateThreadPool(CreateThreadPoolFunc func);
+
+ThreadPoolInterface* CreateDefaultThreadPool();
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_THREAD_POOL_INTERFACE_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.cc
new file mode 100644
index 0000000..305d436
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.cc	
@@ -0,0 +1,263 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/thread_manager/thread_manager.h"
+
+#include <climits>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc {
+
+ThreadManager::WorkerThread::WorkerThread(ThreadManager* thd_mgr)
+    : thd_mgr_(thd_mgr) {
+  // Make thread creation exclusive with respect to its join happening in
+  // ~WorkerThread().
+  thd_ = grpc_core::Thread(
+      "grpcpp_sync_server",
+      [](void* th) { static_cast<ThreadManager::WorkerThread*>(th)->Run(); },
+      this, &created_);
+  if (!created_) {
+    gpr_log(GPR_ERROR, "Could not create grpc_sync_server worker-thread");
+  }
+}
+
+void ThreadManager::WorkerThread::Run() {
+  thd_mgr_->MainWorkLoop();
+  thd_mgr_->MarkAsCompleted(this);
+}
+
+ThreadManager::WorkerThread::~WorkerThread() {
+  // Don't join until the thread is fully constructed.
+  thd_.Join();
+}
+
+ThreadManager::ThreadManager(const char* name,
+                             grpc_resource_quota* resource_quota,
+                             int min_pollers, int max_pollers)
+    : shutdown_(false),
+      num_pollers_(0),
+      min_pollers_(min_pollers),
+      max_pollers_(max_pollers == -1 ? INT_MAX : max_pollers),
+      num_threads_(0),
+      max_active_threads_sofar_(0) {
+  resource_user_ = grpc_resource_user_create(resource_quota, name);
+}
+
+ThreadManager::~ThreadManager() {
+  {
+    grpc_core::MutexLock lock(&mu_);
+    GPR_ASSERT(num_threads_ == 0);
+  }
+
+  grpc_core::ExecCtx exec_ctx;  // grpc_resource_user_unref needs an exec_ctx
+  grpc_resource_user_unref(resource_user_);
+  CleanupCompletedThreads();
+}
+
+void ThreadManager::Wait() {
+  grpc_core::MutexLock lock(&mu_);
+  while (num_threads_ != 0) {
+    shutdown_cv_.Wait(&mu_);
+  }
+}
+
+void ThreadManager::Shutdown() {
+  grpc_core::MutexLock lock(&mu_);
+  shutdown_ = true;
+}
+
+bool ThreadManager::IsShutdown() {
+  grpc_core::MutexLock lock(&mu_);
+  return shutdown_;
+}
+
+int ThreadManager::GetMaxActiveThreadsSoFar() {
+  grpc_core::MutexLock list_lock(&list_mu_);
+  return max_active_threads_sofar_;
+}
+
+void ThreadManager::MarkAsCompleted(WorkerThread* thd) {
+  {
+    grpc_core::MutexLock list_lock(&list_mu_);
+    completed_threads_.push_back(thd);
+  }
+
+  {
+    grpc_core::MutexLock lock(&mu_);
+    num_threads_--;
+    if (num_threads_ == 0) {
+      shutdown_cv_.Signal();
+    }
+  }
+
+  // Give a thread back to the resource quota
+  grpc_resource_user_free_threads(resource_user_, 1);
+}
+
+void ThreadManager::CleanupCompletedThreads() {
+  std::list<WorkerThread*> completed_threads;
+  {
+    // swap out the completed threads list: allows other threads to clean up
+    // more quickly
+    grpc_core::MutexLock lock(&list_mu_);
+    completed_threads.swap(completed_threads_);
+  }
+  for (auto thd : completed_threads) delete thd;
+}
+
+void ThreadManager::Initialize() {
+  if (!grpc_resource_user_allocate_threads(resource_user_, min_pollers_)) {
+    gpr_log(GPR_ERROR,
+            "No thread quota available to even create the minimum required "
+            "polling threads (i.e %d). Unable to start the thread manager",
+            min_pollers_);
+    abort();
+  }
+
+  {
+    grpc_core::MutexLock lock(&mu_);
+    num_pollers_ = min_pollers_;
+    num_threads_ = min_pollers_;
+    max_active_threads_sofar_ = min_pollers_;
+  }
+
+  for (int i = 0; i < min_pollers_; i++) {
+    WorkerThread* worker = new WorkerThread(this);
+    GPR_ASSERT(worker->created());  // Must be able to create the minimum
+    worker->Start();
+  }
+}
+
+void ThreadManager::MainWorkLoop() {
+  while (true) {
+    void* tag;
+    bool ok;
+    WorkStatus work_status = PollForWork(&tag, &ok);
+
+    grpc_core::ReleasableMutexLock lock(&mu_);
+    // Reduce the number of pollers by 1 and check what happened with the poll
+    num_pollers_--;
+    bool done = false;
+    switch (work_status) {
+      case TIMEOUT:
+        // If we timed out and we have more pollers than we need (or we are
+        // shutdown), finish this thread
+        if (shutdown_ || num_pollers_ > max_pollers_) done = true;
+        break;
+      case SHUTDOWN:
+        // If the thread manager is shutdown, finish this thread
+        done = true;
+        break;
+      case WORK_FOUND:
+        // If we got work and there are now insufficient pollers and there is
+        // quota available to create a new thread, start a new poller thread
+        bool resource_exhausted = false;
+        if (!shutdown_ && num_pollers_ < min_pollers_) {
+          if (grpc_resource_user_allocate_threads(resource_user_, 1)) {
+            // We can allocate a new poller thread
+            num_pollers_++;
+            num_threads_++;
+            if (num_threads_ > max_active_threads_sofar_) {
+              max_active_threads_sofar_ = num_threads_;
+            }
+            // Drop lock before spawning thread to avoid contention
+            lock.Unlock();
+            WorkerThread* worker = new WorkerThread(this);
+            if (worker->created()) {
+              worker->Start();
+            } else {
+              num_pollers_--;
+              num_threads_--;
+              resource_exhausted = true;
+              delete worker;
+            }
+          } else if (num_pollers_ > 0) {
+            // There is still at least some thread polling, so we can go on
+            // even though we are below the number of pollers that we would
+            // like to have (min_pollers_)
+            lock.Unlock();
+          } else {
+            // There are no pollers to spare and we couldn't allocate
+            // a new thread, so resources are exhausted!
+            lock.Unlock();
+            resource_exhausted = true;
+          }
+        } else {
+          // There are a sufficient number of pollers available so we can do
+          // the work and continue polling with our existing poller threads
+          lock.Unlock();
+        }
+        // Lock is always released at this point - do the application work
+        // or return resource exhausted if there is new work but we couldn't
+        // get a thread in which to do it.
+        DoWork(tag, ok, !resource_exhausted);
+        // Take the lock again to check post conditions
+        lock.Lock();
+        // If we're shutdown, we should finish at this point.
+        if (shutdown_) done = true;
+        break;
+    }
+    // If we decided to finish the thread, break out of the while loop
+    if (done) break;
+
+    // Otherwise go back to polling as long as it doesn't exceed max_pollers_
+    //
+    // **WARNING**:
+    // There is a possibility of threads thrashing here (i.e excessive thread
+    // shutdowns and creations than the ideal case). This happens if max_poller_
+    // count is small and the rate of incoming requests is also small. In such
+    // scenarios we can possibly configure max_pollers_ to a higher value and/or
+    // increase the cq timeout.
+    //
+    // However, not doing this check here and unconditionally incrementing
+    // num_pollers (and hoping that the system will eventually settle down) has
+    // far worse consequences i.e huge number of threads getting created to the
+    // point of thread-exhaustion. For example: if the incoming request rate is
+    // very high, all the polling threads will return very quickly from
+    // PollForWork() with WORK_FOUND. They all briefly decrement num_pollers_
+    // counter thereby possibly - and briefly - making it go below min_pollers;
+    // This will most likely result in the creation of a new poller since
+    // num_pollers_ dipped below min_pollers_.
+    //
+    // Now, If we didn't do the max_poller_ check here, all these threads will
+    // go back to doing PollForWork() and the whole cycle repeats (with a new
+    // thread being added in each cycle). Once the total number of threads in
+    // the system crosses a certain threshold (around ~1500), there is heavy
+    // contention on mutexes (the mu_ here or the mutexes in gRPC core like the
+    // pollset mutex) that makes DoWork() take longer to finish thereby causing
+    // new poller threads to be created even faster. This results in a thread
+    // avalanche.
+    if (num_pollers_ < max_pollers_) {
+      num_pollers_++;
+    } else {
+      break;
+    }
+  };
+
+  // This thread is exiting. Do some cleanup work i.e delete already completed
+  // worker threads
+  CleanupCompletedThreads();
+
+  // If we are here, either ThreadManager is shutting down or it already has
+  // enough threads.
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.h b/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.h
new file mode 100644
index 0000000..43f1fd5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/thread_manager/thread_manager.h	
@@ -0,0 +1,181 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_THREAD_MANAGER_H
+#define GRPC_INTERNAL_CPP_THREAD_MANAGER_H
+
+#include <list>
+#include <memory>
+
+#include <grpcpp/support/config.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+
+namespace grpc {
+
+class ThreadManager {
+ public:
+  explicit ThreadManager(const char* name, grpc_resource_quota* resource_quota,
+                         int min_pollers, int max_pollers);
+  virtual ~ThreadManager();
+
+  // Initializes and Starts the Rpc Manager threads
+  void Initialize();
+
+  // The return type of PollForWork() function
+  enum WorkStatus { WORK_FOUND, SHUTDOWN, TIMEOUT };
+
+  // "Polls" for new work.
+  // If the return value is WORK_FOUND:
+  //  - The implementaion of PollForWork() MAY set some opaque identifier to
+  //    (identify the work item found) via the '*tag' parameter
+  //  - The implementaion MUST set the value of 'ok' to 'true' or 'false'. A
+  //    value of 'false' indicates some implemenation specific error (that is
+  //    neither SHUTDOWN nor TIMEOUT)
+  //  - ThreadManager does not interpret the values of 'tag' and 'ok'
+  //  - ThreadManager WILL call DoWork() and pass '*tag' and 'ok' as input to
+  //    DoWork()
+  //
+  // If the return value is SHUTDOWN:,
+  //  - ThreadManager WILL NOT call DoWork() and terminates the thread
+  //
+  // If the return value is TIMEOUT:,
+  //  - ThreadManager WILL NOT call DoWork()
+  //  - ThreadManager MAY terminate the thread depending on the current number
+  //    of active poller threads and mix_pollers/max_pollers settings
+  //  - Also, the value of timeout is specific to the derived class
+  //    implementation
+  virtual WorkStatus PollForWork(void** tag, bool* ok) = 0;
+
+  // The implementation of DoWork() is supposed to perform the work found by
+  // PollForWork(). The tag and ok parameters are the same as returned by
+  // PollForWork(). The resources parameter indicates that the call actually
+  // has the resources available for performing the RPC's work. If it doesn't,
+  // the implementation should fail it appropriately.
+  //
+  // The implementation of DoWork() should also do any setup needed to ensure
+  // that the next call to PollForWork() (not necessarily by the current thread)
+  // actually finds some work
+  virtual void DoWork(void* tag, bool ok, bool resources) = 0;
+
+  // Mark the ThreadManager as shutdown and begin draining the work. This is a
+  // non-blocking call and the caller should call Wait(), a blocking call which
+  // returns only once the shutdown is complete
+  virtual void Shutdown();
+
+  // Has Shutdown() been called
+  bool IsShutdown();
+
+  // A blocking call that returns only after the ThreadManager has shutdown and
+  // all the threads have drained all the outstanding work
+  virtual void Wait();
+
+  // Max number of concurrent threads that were ever active in this thread
+  // manager so far. This is useful for debugging purposes (and in unit tests)
+  // to check if resource_quota is properly being enforced.
+  int GetMaxActiveThreadsSoFar();
+
+ private:
+  // Helper wrapper class around grpc_core::Thread. Takes a ThreadManager object
+  // and starts a new grpc_core::Thread to calls the Run() function.
+  //
+  // The Run() function calls ThreadManager::MainWorkLoop() function and once
+  // that completes, it marks the WorkerThread completed by calling
+  // ThreadManager::MarkAsCompleted()
+  //
+  // WHY IS THIS NEEDED?:
+  // When a thread terminates, some other thread *must* call Join() on that
+  // thread so that the resources are released. Having a WorkerThread wrapper
+  // will make this easier. Once Run() completes, each thread calls the
+  // following two functions:
+  //    ThreadManager::CleanupCompletedThreads()
+  //    ThreadManager::MarkAsCompleted()
+  //
+  //  - MarkAsCompleted() puts the WorkerThread object in the ThreadManger's
+  //    completed_threads_ list
+  //  - CleanupCompletedThreads() calls "Join()" on the threads that are already
+  //    in the completed_threads_ list  (since a thread cannot call Join() on
+  //    itself, it calls CleanupCompletedThreads() *before* calling
+  //    MarkAsCompleted())
+  //
+  // TODO(sreek): Consider creating the threads 'detached' so that Join() need
+  // not be called (and the need for this WorkerThread class is eliminated)
+  class WorkerThread {
+   public:
+    WorkerThread(ThreadManager* thd_mgr);
+    ~WorkerThread();
+
+    bool created() const { return created_; }
+    void Start() { thd_.Start(); }
+
+   private:
+    // Calls thd_mgr_->MainWorkLoop() and once that completes, calls
+    // thd_mgr_>MarkAsCompleted(this) to mark the thread as completed
+    void Run();
+
+    ThreadManager* const thd_mgr_;
+    grpc_core::Thread thd_;
+    bool created_;
+  };
+
+  // The main function in ThreadManager
+  void MainWorkLoop();
+
+  void MarkAsCompleted(WorkerThread* thd);
+  void CleanupCompletedThreads();
+
+  // Protects shutdown_, num_pollers_, num_threads_ and
+  // max_active_threads_sofar_
+  grpc_core::Mutex mu_;
+
+  bool shutdown_;
+  grpc_core::CondVar shutdown_cv_;
+
+  // The resource user object to use when requesting quota to create threads
+  //
+  // Note: The user of this ThreadManager object must create grpc_resource_quota
+  // object (that contains the actual max thread quota) and a grpc_resource_user
+  // object through which quota is requested whenever new threads need to be
+  // created
+  grpc_resource_user* resource_user_;
+
+  // Number of threads doing polling
+  int num_pollers_;
+
+  // The minimum and maximum number of threads that should be doing polling
+  int min_pollers_;
+  int max_pollers_;
+
+  // The total number of threads currently active (includes threads includes the
+  // threads that are currently polling i.e num_pollers_)
+  int num_threads_;
+
+  // See GetMaxActiveThreadsSoFar()'s description.
+  // To be more specific, this variable tracks the max value num_threads_ was
+  // ever set so far
+  int max_active_threads_sofar_;
+
+  grpc_core::Mutex list_mu_;
+  std::list<WorkerThread*> completed_threads_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_THREAD_MANAGER_H
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/byte_buffer_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/byte_buffer_cc.cc
new file mode 100644
index 0000000..fb70590
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/byte_buffer_cc.cc	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpcpp/impl/grpc_library.h>
+#include <grpcpp/support/byte_buffer.h>
+
+namespace grpc {
+
+static internal::GrpcLibraryInitializer g_gli_initializer;
+
+Status ByteBuffer::Dump(std::vector<Slice>* slices) const {
+  slices->clear();
+  if (!buffer_) {
+    return Status(StatusCode::FAILED_PRECONDITION, "Buffer not initialized");
+  }
+  grpc_byte_buffer_reader reader;
+  if (!grpc_byte_buffer_reader_init(&reader, buffer_)) {
+    return Status(StatusCode::INTERNAL,
+                  "Couldn't initialize byte buffer reader");
+  }
+  grpc_slice s;
+  while (grpc_byte_buffer_reader_next(&reader, &s)) {
+    slices->push_back(Slice(s, Slice::STEAL_REF));
+  }
+  grpc_byte_buffer_reader_destroy(&reader);
+  return Status::OK;
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/status.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/status.cc
new file mode 100644
index 0000000..93696d8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/status.cc	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/support/status.h>
+
+namespace grpc {
+
+const Status& Status::OK = Status();
+const Status& Status::CANCELLED = Status(StatusCode::CANCELLED, "");
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/string_ref.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/string_ref.cc
new file mode 100644
index 0000000..8b09a82
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/string_ref.cc	
@@ -0,0 +1,25 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpcpp/support/string_ref.h>
+
+namespace grpc {
+
+const size_t string_ref::npos = size_t(-1);
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/time_cc.cc b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/time_cc.cc
new file mode 100644
index 0000000..6c9c228
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/src/cpp/util/time_cc.cc	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/time.h>
+#include <grpcpp/support/config.h>
+#include <grpcpp/support/time.h>
+
+using std::chrono::duration_cast;
+using std::chrono::high_resolution_clock;
+using std::chrono::nanoseconds;
+using std::chrono::seconds;
+using std::chrono::system_clock;
+
+namespace grpc {
+
+void Timepoint2Timespec(const system_clock::time_point& from,
+                        gpr_timespec* to) {
+  system_clock::duration deadline = from.time_since_epoch();
+  seconds secs = duration_cast<seconds>(deadline);
+  if (from == system_clock::time_point::max() ||
+      secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
+      secs.count() < 0) {
+    *to = gpr_inf_future(GPR_CLOCK_REALTIME);
+    return;
+  }
+  nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
+  to->tv_sec = static_cast<int64_t>(secs.count());
+  to->tv_nsec = static_cast<int32_t>(nsecs.count());
+  to->clock_type = GPR_CLOCK_REALTIME;
+}
+
+void TimepointHR2Timespec(const high_resolution_clock::time_point& from,
+                          gpr_timespec* to) {
+  high_resolution_clock::duration deadline = from.time_since_epoch();
+  seconds secs = duration_cast<seconds>(deadline);
+  if (from == high_resolution_clock::time_point::max() ||
+      secs.count() >= gpr_inf_future(GPR_CLOCK_REALTIME).tv_sec ||
+      secs.count() < 0) {
+    *to = gpr_inf_future(GPR_CLOCK_REALTIME);
+    return;
+  }
+  nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
+  to->tv_sec = static_cast<int64_t>(secs.count());
+  to->tv_nsec = static_cast<int32_t>(nsecs.count());
+  to->clock_type = GPR_CLOCK_REALTIME;
+}
+
+system_clock::time_point Timespec2Timepoint(gpr_timespec t) {
+  if (gpr_time_cmp(t, gpr_inf_future(t.clock_type)) == 0) {
+    return system_clock::time_point::max();
+  }
+  t = gpr_convert_clock_type(t, GPR_CLOCK_REALTIME);
+  system_clock::time_point tp;
+  tp += duration_cast<system_clock::time_point::duration>(seconds(t.tv_sec));
+  tp +=
+      duration_cast<system_clock::time_point::duration>(nanoseconds(t.tv_nsec));
+  return tp;
+}
+
+}  // namespace grpc
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/decode.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/decode.h
new file mode 100644
index 0000000..0a2f564
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/decode.h	
@@ -0,0 +1,25 @@
+/*
+** upb_decode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_DECODE_H_
+#define UPB_DECODE_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool upb_decode(const char *buf, size_t size, upb_msg *msg,
+                const upb_msglayout *l, upb_arena *arena);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_DECODE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/encode.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/encode.h
new file mode 100644
index 0000000..b826983
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/encode.h	
@@ -0,0 +1,25 @@
+/*
+** upb_encode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_ENCODE_H_
+#define UPB_ENCODE_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+char *upb_encode(const void *msg, const upb_msglayout *l, upb_arena *arena,
+                 size_t *size);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_ENCODE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/generated_util.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/generated_util.h
new file mode 100644
index 0000000..ccdb80b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/generated_util.h	
@@ -0,0 +1,117 @@
+/*
+** Functions for use by generated code.  These are not public and users must
+** not call them directly.
+*/
+
+#ifndef UPB_GENERATED_UTIL_H_
+#define UPB_GENERATED_UTIL_H_
+
+#include <stdint.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#define PTR_AT(msg, ofs, type) (type*)((const char*)msg + ofs)
+
+UPB_INLINE const void *_upb_array_accessor(const void *msg, size_t ofs,
+                                           size_t *size) {
+  const upb_array *arr = *PTR_AT(msg, ofs, const upb_array*);
+  if (arr) {
+    if (size) *size = arr->len;
+    return arr->data;
+  } else {
+    if (size) *size = 0;
+    return NULL;
+  }
+}
+
+UPB_INLINE void *_upb_array_mutable_accessor(void *msg, size_t ofs,
+                                             size_t *size) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+  if (arr) {
+    if (size) *size = arr->len;
+    return arr->data;
+  } else {
+    if (size) *size = 0;
+    return NULL;
+  }
+}
+
+/* TODO(haberman): this is a mess.  It will improve when upb_array no longer
+ * carries reflective state (type, elem_size). */
+UPB_INLINE void *_upb_array_resize_accessor(void *msg, size_t ofs, size_t size,
+                                            size_t elem_size,
+                                            upb_fieldtype_t type,
+                                            upb_arena *arena) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+
+  if (!arr) {
+    arr = upb_array_new(arena);
+    if (!arr) return NULL;
+    *PTR_AT(msg, ofs, upb_array*) = arr;
+  }
+
+  if (size > arr->size) {
+    size_t new_size = UPB_MAX(arr->size, 4);
+    size_t old_bytes = arr->size * elem_size;
+    size_t new_bytes;
+    while (new_size < size) new_size *= 2;
+    new_bytes = new_size * elem_size;
+    arr->data = upb_arena_realloc(arena, arr->data, old_bytes, new_bytes);
+    if (!arr->data) {
+      return NULL;
+    }
+    arr->size = new_size;
+  }
+
+  arr->len = size;
+  return arr->data;
+}
+
+UPB_INLINE bool _upb_array_append_accessor(void *msg, size_t ofs,
+                                           size_t elem_size,
+                                           upb_fieldtype_t type,
+                                           const void *value,
+                                           upb_arena *arena) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+  size_t i = arr ? arr->len : 0;
+  void *data =
+      _upb_array_resize_accessor(msg, ofs, i + 1, elem_size, type, arena);
+  if (!data) return false;
+  memcpy(PTR_AT(data, i * elem_size, char), value, elem_size);
+  return true;
+}
+
+UPB_INLINE bool _upb_has_field(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, const char) & (1 << (idx % 8))) != 0;
+}
+
+UPB_INLINE bool _upb_sethas(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, char)) |= (char)(1 << (idx % 8));
+}
+
+UPB_INLINE bool _upb_clearhas(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, char)) &= (char)(~(1 << (idx % 8)));
+}
+
+UPB_INLINE bool _upb_has_oneof_field(const void *msg, size_t case_ofs, int32_t num) {
+  return *PTR_AT(msg, case_ofs, int32_t) == num;
+}
+
+#undef PTR_AT
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_GENERATED_UTIL_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/msg.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/msg.h
new file mode 100644
index 0000000..d98486a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/msg.h	
@@ -0,0 +1,73 @@
+/*
+** Data structures for message tables, used for parsing and serialization.
+** This are much lighter-weight than full reflection, but they are do not
+** have enough information to convert to text format, JSON, etc.
+**
+** The definitions in this file are internal to upb.
+**/
+
+#ifndef UPB_MSG_H_
+#define UPB_MSG_H_
+
+#include <stdint.h>
+#include <string.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void upb_msg;
+
+/** upb_msglayout *************************************************************/
+
+/* upb_msglayout represents the memory layout of a given upb_msgdef.  The
+ * members are public so generated code can initialize them, but users MUST NOT
+ * read or write any of its members. */
+
+typedef struct {
+  uint32_t number;
+  uint16_t offset;
+  int16_t presence;      /* If >0, hasbit_index+1.  If <0, oneof_index+1. */
+  uint16_t submsg_index;  /* undefined if descriptortype != MESSAGE or GROUP. */
+  uint8_t descriptortype;
+  uint8_t label;
+} upb_msglayout_field;
+
+typedef struct upb_msglayout {
+  const struct upb_msglayout *const* submsgs;
+  const upb_msglayout_field *fields;
+  /* Must be aligned to sizeof(void*).  Doesn't include internal members like
+   * unknown fields, extension dict, pointer to msglayout, etc. */
+  uint16_t size;
+  uint16_t field_count;
+  bool extendable;
+} upb_msglayout;
+
+/** Message internal representation *******************************************/
+
+/* Our internal representation for repeated fields. */
+typedef struct {
+  void *data;   /* Each element is element_size. */
+  size_t len;   /* Measured in elements. */
+  size_t size;  /* Measured in elements. */
+} upb_array;
+
+upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a);
+upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a);
+
+void upb_msg_addunknown(upb_msg *msg, const char *data, size_t len,
+                        upb_arena *arena);
+const char *upb_msg_getunknown(const upb_msg *msg, size_t *len);
+
+upb_array *upb_array_new(upb_arena *a);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif /* UPB_MSG_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_def.inc b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_def.inc
new file mode 100644
index 0000000..b416eae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_def.inc	
@@ -0,0 +1,150 @@
+/*
+* This is where we define macros used across upb.
+*
+* All of these macros are undef'd in port_undef.inc to avoid leaking them to
+* users.
+*
+* The correct usage is:
+*
+*   #include "upb/foobar.h"
+*   #include "upb/baz.h"
+*
+*   // MUST be last included header.
+*   #include "upb/port_def.inc"
+*
+*   // Code for this file.
+*   // <...>
+*
+*   // Can be omitted for .c files, required for .h.
+*   #include "upb/port_undef.inc"
+*
+* This file is private and must not be included by users!
+*/
+#include <stdint.h>
+
+#if UINTPTR_MAX == 0xffffffff
+#define UPB_SIZE(size32, size64) size32
+#else
+#define UPB_SIZE(size32, size64) size64
+#endif
+
+#define UPB_FIELD_AT(msg, fieldtype, offset) \
+  *(fieldtype*)((const char*)(msg) + offset)
+
+#define UPB_READ_ONEOF(msg, fieldtype, offset, case_offset, case_val, default) \
+  UPB_FIELD_AT(msg, int, case_offset) == case_val                              \
+      ? UPB_FIELD_AT(msg, fieldtype, offset)                                   \
+      : default
+
+#define UPB_WRITE_ONEOF(msg, fieldtype, offset, value, case_offset, case_val) \
+  UPB_FIELD_AT(msg, int, case_offset) = case_val;                             \
+  UPB_FIELD_AT(msg, fieldtype, offset) = value;
+
+/* UPB_INLINE: inline if possible, emit standalone code if required. */
+#ifdef __cplusplus
+#define UPB_INLINE inline
+#elif defined (__GNUC__) || defined(__clang__)
+#define UPB_INLINE static __inline__
+#else
+#define UPB_INLINE static
+#endif
+
+/* Hints to the compiler about likely/unlikely branches. */
+#if defined (__GNUC__) || defined(__clang__)
+#define UPB_LIKELY(x) __builtin_expect((x),1)
+#define UPB_UNLIKELY(x) __builtin_expect((x),0)
+#else
+#define UPB_LIKELY(x) (x)
+#define UPB_UNLIKELY(x) (x)
+#endif
+
+/* Define UPB_BIG_ENDIAN manually if you're on big endian and your compiler
+ * doesn't provide these preprocessor symbols. */
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#define UPB_BIG_ENDIAN
+#endif
+
+/* Macros for function attributes on compilers that support them. */
+#ifdef __GNUC__
+#define UPB_FORCEINLINE __inline__ __attribute__((always_inline))
+#define UPB_NOINLINE __attribute__((noinline))
+#define UPB_NORETURN __attribute__((__noreturn__))
+#else  /* !defined(__GNUC__) */
+#define UPB_FORCEINLINE
+#define UPB_NOINLINE
+#define UPB_NORETURN
+#endif
+
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
+/* C99/C++11 versions. */
+#include <stdio.h>
+#define _upb_snprintf snprintf
+#define _upb_vsnprintf vsnprintf
+#define _upb_va_copy(a, b) va_copy(a, b)
+#elif defined(_MSC_VER)
+/* Microsoft C/C++ versions. */
+#include <stdarg.h>
+#include <stdio.h>
+#if _MSC_VER < 1900
+int msvc_snprintf(char* s, size_t n, const char* format, ...);
+int msvc_vsnprintf(char* s, size_t n, const char* format, va_list arg);
+#define UPB_MSVC_VSNPRINTF
+#define _upb_snprintf msvc_snprintf
+#define _upb_vsnprintf msvc_vsnprintf
+#else
+#define _upb_snprintf snprintf
+#define _upb_vsnprintf vsnprintf
+#endif
+#define _upb_va_copy(a, b) va_copy(a, b)
+#elif defined __GNUC__
+/* A few hacky workarounds for functions not in C89.
+ * For internal use only!
+ * TODO(haberman): fix these by including our own implementations, or finding
+ * another workaround.
+ */
+#define _upb_snprintf __builtin_snprintf
+#define _upb_vsnprintf __builtin_vsnprintf
+#define _upb_va_copy(a, b) __va_copy(a, b)
+#else
+#error Need implementations of [v]snprintf and va_copy
+#endif
+
+#ifdef __cplusplus
+#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || \
+    (defined(_MSC_VER) && _MSC_VER >= 1900)
+/* C++11 is present */
+#else
+#error upb requires C++11 for C++ support
+#endif
+#endif
+
+#define UPB_MAX(x, y) ((x) > (y) ? (x) : (y))
+#define UPB_MIN(x, y) ((x) < (y) ? (x) : (y))
+
+#define UPB_UNUSED(var) (void)var
+
+/* UPB_ASSERT(): in release mode, we use the expression without letting it be
+ * evaluated.  This prevents "unused variable" warnings. */
+#ifdef NDEBUG
+#define UPB_ASSERT(expr) do {} while (false && (expr))
+#else
+#define UPB_ASSERT(expr) assert(expr)
+#endif
+
+/* UPB_ASSERT_DEBUGVAR(): assert that uses functions or variables that only
+ * exist in debug mode.  This turns into regular assert. */
+#define UPB_ASSERT_DEBUGVAR(expr) assert(expr)
+
+#if defined(__GNUC__) || defined(__clang__)
+#define UPB_UNREACHABLE() do { assert(0); __builtin_unreachable(); } while(0)
+#else
+#define UPB_UNREACHABLE() do { assert(0); } while(0)
+#endif
+
+/* UPB_INFINITY representing floating-point positive infinity. */
+#include <math.h>
+#ifdef INFINITY
+#define UPB_INFINITY INFINITY
+#else
+#define UPB_INFINITY (1.0 / 0.0)
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_undef.inc b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_undef.inc
new file mode 100644
index 0000000..103180b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/port_undef.inc	
@@ -0,0 +1,21 @@
+/* See port_def.inc.  This should #undef all macros #defined there. */
+
+#undef UPB_SIZE
+#undef UPB_FIELD_AT
+#undef UPB_READ_ONEOF
+#undef UPB_WRITE_ONEOF
+#undef UPB_INLINE
+#undef UPB_FORCEINLINE
+#undef UPB_NOINLINE
+#undef UPB_NORETURN
+#undef UPB_MAX
+#undef UPB_MIN
+#undef UPB_UNUSED
+#undef UPB_ASSERT
+#undef UPB_ASSERT_DEBUGVAR
+#undef UPB_UNREACHABLE
+#undef UPB_INFINITY
+#undef UPB_MSVC_VSNPRINTF
+#undef _upb_snprintf
+#undef _upb_vsnprintf
+#undef _upb_va_copy
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/table.int.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/table.int.h
new file mode 100644
index 0000000..9444771
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/table.int.h	
@@ -0,0 +1,519 @@
+/*
+** upb_table
+**
+** This header is INTERNAL-ONLY!  Its interfaces are not public or stable!
+** This file defines very fast int->upb_value (inttable) and string->upb_value
+** (strtable) hash tables.
+**
+** The table uses chained scatter with Brent's variation (inspired by the Lua
+** implementation of hash tables).  The hash function for strings is Austin
+** Appleby's "MurmurHash."
+**
+** The inttable uses uintptr_t as its key, which guarantees it can be used to
+** store pointers or integers of at least 32 bits (upb isn't really useful on
+** systems where sizeof(void*) < 4).
+**
+** The table must be homogenous (all values of the same type).  In debug
+** mode, we check this on insert and lookup.
+*/
+
+#ifndef UPB_TABLE_H_
+#define UPB_TABLE_H_
+
+#include <stdint.h>
+#include <string.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* upb_value ******************************************************************/
+
+/* A tagged union (stored untagged inside the table) so that we can check that
+ * clients calling table accessors are correctly typed without having to have
+ * an explosion of accessors. */
+typedef enum {
+  UPB_CTYPE_INT32    = 1,
+  UPB_CTYPE_INT64    = 2,
+  UPB_CTYPE_UINT32   = 3,
+  UPB_CTYPE_UINT64   = 4,
+  UPB_CTYPE_BOOL     = 5,
+  UPB_CTYPE_CSTR     = 6,
+  UPB_CTYPE_PTR      = 7,
+  UPB_CTYPE_CONSTPTR = 8,
+  UPB_CTYPE_FPTR     = 9,
+  UPB_CTYPE_FLOAT    = 10,
+  UPB_CTYPE_DOUBLE   = 11
+} upb_ctype_t;
+
+typedef struct {
+  uint64_t val;
+#ifndef NDEBUG
+  /* In debug mode we carry the value type around also so we can check accesses
+   * to be sure the right member is being read. */
+  upb_ctype_t ctype;
+#endif
+} upb_value;
+
+#ifdef NDEBUG
+#define SET_TYPE(dest, val)      UPB_UNUSED(val)
+#else
+#define SET_TYPE(dest, val) dest = val
+#endif
+
+/* Like strdup(), which isn't always available since it's not ANSI C. */
+char *upb_strdup(const char *s, upb_alloc *a);
+/* Variant that works with a length-delimited rather than NULL-delimited string,
+ * as supported by strtable. */
+char *upb_strdup2(const char *s, size_t len, upb_alloc *a);
+
+UPB_INLINE char *upb_gstrdup(const char *s) {
+  return upb_strdup(s, &upb_alloc_global);
+}
+
+UPB_INLINE void _upb_value_setval(upb_value *v, uint64_t val,
+                                  upb_ctype_t ctype) {
+  v->val = val;
+  SET_TYPE(v->ctype, ctype);
+}
+
+UPB_INLINE upb_value _upb_value_val(uint64_t val, upb_ctype_t ctype) {
+  upb_value ret;
+  _upb_value_setval(&ret, val, ctype);
+  return ret;
+}
+
+/* For each value ctype, define the following set of functions:
+ *
+ * // Get/set an int32 from a upb_value.
+ * int32_t upb_value_getint32(upb_value val);
+ * void upb_value_setint32(upb_value *val, int32_t cval);
+ *
+ * // Construct a new upb_value from an int32.
+ * upb_value upb_value_int32(int32_t val); */
+#define FUNCS(name, membername, type_t, converter, proto_type) \
+  UPB_INLINE void upb_value_set ## name(upb_value *val, type_t cval) { \
+    val->val = (converter)cval; \
+    SET_TYPE(val->ctype, proto_type); \
+  } \
+  UPB_INLINE upb_value upb_value_ ## name(type_t val) { \
+    upb_value ret; \
+    upb_value_set ## name(&ret, val); \
+    return ret; \
+  } \
+  UPB_INLINE type_t upb_value_get ## name(upb_value val) { \
+    UPB_ASSERT_DEBUGVAR(val.ctype == proto_type); \
+    return (type_t)(converter)val.val; \
+  }
+
+FUNCS(int32,    int32,        int32_t,      int32_t,    UPB_CTYPE_INT32)
+FUNCS(int64,    int64,        int64_t,      int64_t,    UPB_CTYPE_INT64)
+FUNCS(uint32,   uint32,       uint32_t,     uint32_t,   UPB_CTYPE_UINT32)
+FUNCS(uint64,   uint64,       uint64_t,     uint64_t,   UPB_CTYPE_UINT64)
+FUNCS(bool,     _bool,        bool,         bool,       UPB_CTYPE_BOOL)
+FUNCS(cstr,     cstr,         char*,        uintptr_t,  UPB_CTYPE_CSTR)
+FUNCS(ptr,      ptr,          void*,        uintptr_t,  UPB_CTYPE_PTR)
+FUNCS(constptr, constptr,     const void*,  uintptr_t,  UPB_CTYPE_CONSTPTR)
+FUNCS(fptr,     fptr,         upb_func*,    uintptr_t,  UPB_CTYPE_FPTR)
+
+#undef FUNCS
+
+UPB_INLINE void upb_value_setfloat(upb_value *val, float cval) {
+  memcpy(&val->val, &cval, sizeof(cval));
+  SET_TYPE(val->ctype, UPB_CTYPE_FLOAT);
+}
+
+UPB_INLINE void upb_value_setdouble(upb_value *val, double cval) {
+  memcpy(&val->val, &cval, sizeof(cval));
+  SET_TYPE(val->ctype, UPB_CTYPE_DOUBLE);
+}
+
+UPB_INLINE upb_value upb_value_float(float cval) {
+  upb_value ret;
+  upb_value_setfloat(&ret, cval);
+  return ret;
+}
+
+UPB_INLINE upb_value upb_value_double(double cval) {
+  upb_value ret;
+  upb_value_setdouble(&ret, cval);
+  return ret;
+}
+
+#undef SET_TYPE
+
+
+/* upb_tabkey *****************************************************************/
+
+/* Either:
+ *   1. an actual integer key, or
+ *   2. a pointer to a string prefixed by its uint32_t length, owned by us.
+ *
+ * ...depending on whether this is a string table or an int table.  We would
+ * make this a union of those two types, but C89 doesn't support statically
+ * initializing a non-first union member. */
+typedef uintptr_t upb_tabkey;
+
+UPB_INLINE char *upb_tabstr(upb_tabkey key, uint32_t *len) {
+  char* mem = (char*)key;
+  if (len) memcpy(len, mem, sizeof(*len));
+  return mem + sizeof(*len);
+}
+
+
+/* upb_tabval *****************************************************************/
+
+typedef struct {
+  uint64_t val;
+} upb_tabval;
+
+#define UPB_TABVALUE_EMPTY_INIT  {-1}
+
+
+/* upb_table ******************************************************************/
+
+typedef struct _upb_tabent {
+  upb_tabkey key;
+  upb_tabval val;
+
+  /* Internal chaining.  This is const so we can create static initializers for
+   * tables.  We cast away const sometimes, but *only* when the containing
+   * upb_table is known to be non-const.  This requires a bit of care, but
+   * the subtlety is confined to table.c. */
+  const struct _upb_tabent *next;
+} upb_tabent;
+
+typedef struct {
+  size_t count;          /* Number of entries in the hash part. */
+  size_t mask;           /* Mask to turn hash value -> bucket. */
+  upb_ctype_t ctype;     /* Type of all values. */
+  uint8_t size_lg2;      /* Size of the hashtable part is 2^size_lg2 entries. */
+
+  /* Hash table entries.
+   * Making this const isn't entirely accurate; what we really want is for it to
+   * have the same const-ness as the table it's inside.  But there's no way to
+   * declare that in C.  So we have to make it const so that we can statically
+   * initialize const hash tables.  Then we cast away const when we have to.
+   */
+  const upb_tabent *entries;
+
+#ifndef NDEBUG
+  /* This table's allocator.  We make the user pass it in to every relevant
+   * function and only use this to check it in debug mode.  We do this solely
+   * to keep upb_table as small as possible.  This might seem slightly paranoid
+   * but the plan is to use upb_table for all map fields and extension sets in
+   * a forthcoming message representation, so there could be a lot of these.
+   * If this turns out to be too annoying later, we can change it (since this
+   * is an internal-only header file). */
+  upb_alloc *alloc;
+#endif
+} upb_table;
+
+typedef struct {
+  upb_table t;
+} upb_strtable;
+
+typedef struct {
+  upb_table t;              /* For entries that don't fit in the array part. */
+  const upb_tabval *array;  /* Array part of the table. See const note above. */
+  size_t array_size;        /* Array part size. */
+  size_t array_count;       /* Array part number of elements. */
+} upb_inttable;
+
+#define UPB_INTTABLE_INIT(count, mask, ctype, size_lg2, ent, a, asize, acount) \
+  {UPB_TABLE_INIT(count, mask, ctype, size_lg2, ent), a, asize, acount}
+
+#define UPB_EMPTY_INTTABLE_INIT(ctype) \
+  UPB_INTTABLE_INIT(0, 0, ctype, 0, NULL, NULL, 0, 0)
+
+#define UPB_ARRAY_EMPTYENT -1
+
+UPB_INLINE size_t upb_table_size(const upb_table *t) {
+  if (t->size_lg2 == 0)
+    return 0;
+  else
+    return 1 << t->size_lg2;
+}
+
+/* Internal-only functions, in .h file only out of necessity. */
+UPB_INLINE bool upb_tabent_isempty(const upb_tabent *e) {
+  return e->key == 0;
+}
+
+/* Used by some of the unit tests for generic hashing functionality. */
+uint32_t upb_murmur_hash2(const void * key, size_t len, uint32_t seed);
+
+UPB_INLINE uintptr_t upb_intkey(uintptr_t key) {
+  return key;
+}
+
+UPB_INLINE uint32_t upb_inthash(uintptr_t key) {
+  return (uint32_t)key;
+}
+
+static const upb_tabent *upb_getentry(const upb_table *t, uint32_t hash) {
+  return t->entries + (hash & t->mask);
+}
+
+UPB_INLINE bool upb_arrhas(upb_tabval key) {
+  return key.val != (uint64_t)-1;
+}
+
+/* Initialize and uninitialize a table, respectively.  If memory allocation
+ * failed, false is returned that the table is uninitialized. */
+bool upb_inttable_init2(upb_inttable *table, upb_ctype_t ctype, upb_alloc *a);
+bool upb_strtable_init2(upb_strtable *table, upb_ctype_t ctype, upb_alloc *a);
+void upb_inttable_uninit2(upb_inttable *table, upb_alloc *a);
+void upb_strtable_uninit2(upb_strtable *table, upb_alloc *a);
+
+UPB_INLINE bool upb_inttable_init(upb_inttable *table, upb_ctype_t ctype) {
+  return upb_inttable_init2(table, ctype, &upb_alloc_global);
+}
+
+UPB_INLINE bool upb_strtable_init(upb_strtable *table, upb_ctype_t ctype) {
+  return upb_strtable_init2(table, ctype, &upb_alloc_global);
+}
+
+UPB_INLINE void upb_inttable_uninit(upb_inttable *table) {
+  upb_inttable_uninit2(table, &upb_alloc_global);
+}
+
+UPB_INLINE void upb_strtable_uninit(upb_strtable *table) {
+  upb_strtable_uninit2(table, &upb_alloc_global);
+}
+
+/* Returns the number of values in the table. */
+size_t upb_inttable_count(const upb_inttable *t);
+UPB_INLINE size_t upb_strtable_count(const upb_strtable *t) {
+  return t->t.count;
+}
+
+void upb_inttable_packedsize(const upb_inttable *t, size_t *size);
+void upb_strtable_packedsize(const upb_strtable *t, size_t *size);
+upb_inttable *upb_inttable_pack(const upb_inttable *t, void *p, size_t *ofs,
+                                size_t size);
+upb_strtable *upb_strtable_pack(const upb_strtable *t, void *p, size_t *ofs,
+                                size_t size);
+
+/* Inserts the given key into the hashtable with the given value.  The key must
+ * not already exist in the hash table.  For string tables, the key must be
+ * NULL-terminated, and the table will make an internal copy of the key.
+ * Inttables must not insert a value of UINTPTR_MAX.
+ *
+ * If a table resize was required but memory allocation failed, false is
+ * returned and the table is unchanged. */
+bool upb_inttable_insert2(upb_inttable *t, uintptr_t key, upb_value val,
+                          upb_alloc *a);
+bool upb_strtable_insert3(upb_strtable *t, const char *key, size_t len,
+                          upb_value val, upb_alloc *a);
+
+UPB_INLINE bool upb_inttable_insert(upb_inttable *t, uintptr_t key,
+                                    upb_value val) {
+  return upb_inttable_insert2(t, key, val, &upb_alloc_global);
+}
+
+UPB_INLINE bool upb_strtable_insert2(upb_strtable *t, const char *key,
+                                     size_t len, upb_value val) {
+  return upb_strtable_insert3(t, key, len, val, &upb_alloc_global);
+}
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_insert(upb_strtable *t, const char *key,
+                                    upb_value val) {
+  return upb_strtable_insert2(t, key, strlen(key), val);
+}
+
+/* Looks up key in this table, returning "true" if the key was found.
+ * If v is non-NULL, copies the value for this key into *v. */
+bool upb_inttable_lookup(const upb_inttable *t, uintptr_t key, upb_value *v);
+bool upb_strtable_lookup2(const upb_strtable *t, const char *key, size_t len,
+                          upb_value *v);
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_lookup(const upb_strtable *t, const char *key,
+                                    upb_value *v) {
+  return upb_strtable_lookup2(t, key, strlen(key), v);
+}
+
+/* Removes an item from the table.  Returns true if the remove was successful,
+ * and stores the removed item in *val if non-NULL. */
+bool upb_inttable_remove(upb_inttable *t, uintptr_t key, upb_value *val);
+bool upb_strtable_remove3(upb_strtable *t, const char *key, size_t len,
+                          upb_value *val, upb_alloc *alloc);
+
+UPB_INLINE bool upb_strtable_remove2(upb_strtable *t, const char *key,
+                                     size_t len, upb_value *val) {
+  return upb_strtable_remove3(t, key, len, val, &upb_alloc_global);
+}
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_remove(upb_strtable *t, const char *key,
+                                    upb_value *v) {
+  return upb_strtable_remove2(t, key, strlen(key), v);
+}
+
+/* Updates an existing entry in an inttable.  If the entry does not exist,
+ * returns false and does nothing.  Unlike insert/remove, this does not
+ * invalidate iterators. */
+bool upb_inttable_replace(upb_inttable *t, uintptr_t key, upb_value val);
+
+/* Handy routines for treating an inttable like a stack.  May not be mixed with
+ * other insert/remove calls. */
+bool upb_inttable_push2(upb_inttable *t, upb_value val, upb_alloc *a);
+upb_value upb_inttable_pop(upb_inttable *t);
+
+UPB_INLINE bool upb_inttable_push(upb_inttable *t, upb_value val) {
+  return upb_inttable_push2(t, val, &upb_alloc_global);
+}
+
+/* Convenience routines for inttables with pointer keys. */
+bool upb_inttable_insertptr2(upb_inttable *t, const void *key, upb_value val,
+                             upb_alloc *a);
+bool upb_inttable_removeptr(upb_inttable *t, const void *key, upb_value *val);
+bool upb_inttable_lookupptr(
+    const upb_inttable *t, const void *key, upb_value *val);
+
+UPB_INLINE bool upb_inttable_insertptr(upb_inttable *t, const void *key,
+                                       upb_value val) {
+  return upb_inttable_insertptr2(t, key, val, &upb_alloc_global);
+}
+
+/* Optimizes the table for the current set of entries, for both memory use and
+ * lookup time.  Client should call this after all entries have been inserted;
+ * inserting more entries is legal, but will likely require a table resize. */
+void upb_inttable_compact2(upb_inttable *t, upb_alloc *a);
+
+UPB_INLINE void upb_inttable_compact(upb_inttable *t) {
+  upb_inttable_compact2(t, &upb_alloc_global);
+}
+
+/* A special-case inlinable version of the lookup routine for 32-bit
+ * integers. */
+UPB_INLINE bool upb_inttable_lookup32(const upb_inttable *t, uint32_t key,
+                                      upb_value *v) {
+  *v = upb_value_int32(0);  /* Silence compiler warnings. */
+  if (key < t->array_size) {
+    upb_tabval arrval = t->array[key];
+    if (upb_arrhas(arrval)) {
+      _upb_value_setval(v, arrval.val, t->t.ctype);
+      return true;
+    } else {
+      return false;
+    }
+  } else {
+    const upb_tabent *e;
+    if (t->t.entries == NULL) return false;
+    for (e = upb_getentry(&t->t, upb_inthash(key)); true; e = e->next) {
+      if ((uint32_t)e->key == key) {
+        _upb_value_setval(v, e->val.val, t->t.ctype);
+        return true;
+      }
+      if (e->next == NULL) return false;
+    }
+  }
+}
+
+/* Exposed for testing only. */
+bool upb_strtable_resize(upb_strtable *t, size_t size_lg2, upb_alloc *a);
+
+/* Iterators ******************************************************************/
+
+/* Iterators for int and string tables.  We are subject to some kind of unusual
+ * design constraints:
+ *
+ * For high-level languages:
+ *  - we must be able to guarantee that we don't crash or corrupt memory even if
+ *    the program accesses an invalidated iterator.
+ *
+ * For C++11 range-based for:
+ *  - iterators must be copyable
+ *  - iterators must be comparable
+ *  - it must be possible to construct an "end" value.
+ *
+ * Iteration order is undefined.
+ *
+ * Modifying the table invalidates iterators.  upb_{str,int}table_done() is
+ * guaranteed to work even on an invalidated iterator, as long as the table it
+ * is iterating over has not been freed.  Calling next() or accessing data from
+ * an invalidated iterator yields unspecified elements from the table, but it is
+ * guaranteed not to crash and to return real table elements (except when done()
+ * is true). */
+
+
+/* upb_strtable_iter **********************************************************/
+
+/*   upb_strtable_iter i;
+ *   upb_strtable_begin(&i, t);
+ *   for(; !upb_strtable_done(&i); upb_strtable_next(&i)) {
+ *     const char *key = upb_strtable_iter_key(&i);
+ *     const upb_value val = upb_strtable_iter_value(&i);
+ *     // ...
+ *   }
+ */
+
+typedef struct {
+  const upb_strtable *t;
+  size_t index;
+} upb_strtable_iter;
+
+void upb_strtable_begin(upb_strtable_iter *i, const upb_strtable *t);
+void upb_strtable_next(upb_strtable_iter *i);
+bool upb_strtable_done(const upb_strtable_iter *i);
+const char *upb_strtable_iter_key(const upb_strtable_iter *i);
+size_t upb_strtable_iter_keylength(const upb_strtable_iter *i);
+upb_value upb_strtable_iter_value(const upb_strtable_iter *i);
+void upb_strtable_iter_setdone(upb_strtable_iter *i);
+bool upb_strtable_iter_isequal(const upb_strtable_iter *i1,
+                               const upb_strtable_iter *i2);
+
+
+/* upb_inttable_iter **********************************************************/
+
+/*   upb_inttable_iter i;
+ *   upb_inttable_begin(&i, t);
+ *   for(; !upb_inttable_done(&i); upb_inttable_next(&i)) {
+ *     uintptr_t key = upb_inttable_iter_key(&i);
+ *     upb_value val = upb_inttable_iter_value(&i);
+ *     // ...
+ *   }
+ */
+
+typedef struct {
+  const upb_inttable *t;
+  size_t index;
+  bool array_part;
+} upb_inttable_iter;
+
+void upb_inttable_begin(upb_inttable_iter *i, const upb_inttable *t);
+void upb_inttable_next(upb_inttable_iter *i);
+bool upb_inttable_done(const upb_inttable_iter *i);
+uintptr_t upb_inttable_iter_key(const upb_inttable_iter *i);
+upb_value upb_inttable_iter_value(const upb_inttable_iter *i);
+void upb_inttable_iter_setdone(upb_inttable_iter *i);
+bool upb_inttable_iter_isequal(const upb_inttable_iter *i1,
+                               const upb_inttable_iter *i2);
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_TABLE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/upb.h b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/upb.h
new file mode 100644
index 0000000..8117f14
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-C++/third_party/upb/upb/upb.h	
@@ -0,0 +1,372 @@
+/*
+** This file contains shared definitions that are widely used across upb.
+**
+** This is a mixed C/C++ interface that offers a full API to both languages.
+** See the top-level README for more information.
+*/
+
+#ifndef UPB_H_
+#define UPB_H_
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+#include <memory>
+namespace upb {
+class Arena;
+class Status;
+template <int N> class InlinedArena;
+}
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+/* upb_status *****************************************************************/
+
+/* upb_status represents a success or failure status and error message.
+ * It owns no resources and allocates no memory, so it should work
+ * even in OOM situations. */
+
+/* The maximum length of an error message before it will get truncated. */
+#define UPB_STATUS_MAX_MESSAGE 127
+
+typedef struct {
+  bool ok;
+  char msg[UPB_STATUS_MAX_MESSAGE];  /* Error message; NULL-terminated. */
+} upb_status;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const char *upb_status_errmsg(const upb_status *status);
+bool upb_ok(const upb_status *status);
+
+/* Any of the functions that write to a status object allow status to be NULL,
+ * to support use cases where the function's caller does not care about the
+ * status message. */
+void upb_status_clear(upb_status *status);
+void upb_status_seterrmsg(upb_status *status, const char *msg);
+void upb_status_seterrf(upb_status *status, const char *fmt, ...);
+void upb_status_vseterrf(upb_status *status, const char *fmt, va_list args);
+
+UPB_INLINE void upb_status_setoom(upb_status *status) {
+  upb_status_seterrmsg(status, "out of memory");
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+
+class upb::Status {
+ public:
+  Status() { upb_status_clear(&status_); }
+
+  upb_status* ptr() { return &status_; }
+
+  /* Returns true if there is no error. */
+  bool ok() const { return upb_ok(&status_); }
+
+  /* Guaranteed to be NULL-terminated. */
+  const char *error_message() const { return upb_status_errmsg(&status_); }
+
+  /* The error message will be truncated if it is longer than
+   * UPB_STATUS_MAX_MESSAGE-4. */
+  void SetErrorMessage(const char *msg) { upb_status_seterrmsg(&status_, msg); }
+  void SetFormattedErrorMessage(const char *fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+    upb_status_vseterrf(&status_, fmt, args);
+    va_end(args);
+  }
+
+  /* Resets the status to a successful state with no message. */
+  void Clear() { upb_status_clear(&status_); }
+
+ private:
+  upb_status status_;
+};
+
+#endif  /* __cplusplus */
+
+/** upb_strview ************************************************************/
+
+typedef struct {
+  const char *data;
+  size_t size;
+} upb_strview;
+
+UPB_INLINE upb_strview upb_strview_make(const char *data, size_t size) {
+  upb_strview ret;
+  ret.data = data;
+  ret.size = size;
+  return ret;
+}
+
+UPB_INLINE upb_strview upb_strview_makez(const char *data) {
+  return upb_strview_make(data, strlen(data));
+}
+
+UPB_INLINE bool upb_strview_eql(upb_strview a, upb_strview b) {
+  return a.size == b.size && memcmp(a.data, b.data, a.size) == 0;
+}
+
+#define UPB_STRVIEW_INIT(ptr, len) {ptr, len}
+
+#define UPB_STRVIEW_FORMAT "%.*s"
+#define UPB_STRVIEW_ARGS(view) (int)(view).size, (view).data
+
+/** upb_alloc *****************************************************************/
+
+/* A upb_alloc is a possibly-stateful allocator object.
+ *
+ * It could either be an arena allocator (which doesn't require individual
+ * free() calls) or a regular malloc() (which does).  The client must therefore
+ * free memory unless it knows that the allocator is an arena allocator. */
+
+struct upb_alloc;
+typedef struct upb_alloc upb_alloc;
+
+/* A malloc()/free() function.
+ * If "size" is 0 then the function acts like free(), otherwise it acts like
+ * realloc().  Only "oldsize" bytes from a previous allocation are preserved. */
+typedef void *upb_alloc_func(upb_alloc *alloc, void *ptr, size_t oldsize,
+                             size_t size);
+
+struct upb_alloc {
+  upb_alloc_func *func;
+};
+
+UPB_INLINE void *upb_malloc(upb_alloc *alloc, size_t size) {
+  UPB_ASSERT(alloc);
+  return alloc->func(alloc, NULL, 0, size);
+}
+
+UPB_INLINE void *upb_realloc(upb_alloc *alloc, void *ptr, size_t oldsize,
+                             size_t size) {
+  UPB_ASSERT(alloc);
+  return alloc->func(alloc, ptr, oldsize, size);
+}
+
+UPB_INLINE void upb_free(upb_alloc *alloc, void *ptr) {
+  assert(alloc);
+  alloc->func(alloc, ptr, 0, 0);
+}
+
+/* The global allocator used by upb.  Uses the standard malloc()/free(). */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern upb_alloc upb_alloc_global;
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+/* Functions that hard-code the global malloc.
+ *
+ * We still get benefit because we can put custom logic into our global
+ * allocator, like injecting out-of-memory faults in debug/testing builds. */
+
+UPB_INLINE void *upb_gmalloc(size_t size) {
+  return upb_malloc(&upb_alloc_global, size);
+}
+
+UPB_INLINE void *upb_grealloc(void *ptr, size_t oldsize, size_t size) {
+  return upb_realloc(&upb_alloc_global, ptr, oldsize, size);
+}
+
+UPB_INLINE void upb_gfree(void *ptr) {
+  upb_free(&upb_alloc_global, ptr);
+}
+
+/* upb_arena ******************************************************************/
+
+/* upb_arena is a specific allocator implementation that uses arena allocation.
+ * The user provides an allocator that will be used to allocate the underlying
+ * arena blocks.  Arenas by nature do not require the individual allocations
+ * to be freed.  However the Arena does allow users to register cleanup
+ * functions that will run when the arena is destroyed.
+ *
+ * A upb_arena is *not* thread-safe.
+ *
+ * You could write a thread-safe arena allocator that satisfies the
+ * upb_alloc interface, but it would not be as efficient for the
+ * single-threaded case. */
+
+typedef void upb_cleanup_func(void *ud);
+
+struct upb_arena;
+typedef struct upb_arena upb_arena;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Creates an arena from the given initial block (if any -- n may be 0).
+ * Additional blocks will be allocated from |alloc|.  If |alloc| is NULL, this
+ * is a fixed-size arena and cannot grow. */
+upb_arena *upb_arena_init(void *mem, size_t n, upb_alloc *alloc);
+void upb_arena_free(upb_arena *a);
+bool upb_arena_addcleanup(upb_arena *a, void *ud, upb_cleanup_func *func);
+size_t upb_arena_bytesallocated(const upb_arena *a);
+
+UPB_INLINE upb_alloc *upb_arena_alloc(upb_arena *a) { return (upb_alloc*)a; }
+
+/* Convenience wrappers around upb_alloc functions. */
+
+UPB_INLINE void *upb_arena_malloc(upb_arena *a, size_t size) {
+  return upb_malloc(upb_arena_alloc(a), size);
+}
+
+UPB_INLINE void *upb_arena_realloc(upb_arena *a, void *ptr, size_t oldsize,
+                                   size_t size) {
+  return upb_realloc(upb_arena_alloc(a), ptr, oldsize, size);
+}
+
+UPB_INLINE upb_arena *upb_arena_new(void) {
+  return upb_arena_init(NULL, 0, &upb_alloc_global);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+
+class upb::Arena {
+ public:
+  /* A simple arena with no initial memory block and the default allocator. */
+  Arena() : ptr_(upb_arena_new(), upb_arena_free) {}
+
+  upb_arena* ptr() { return ptr_.get(); }
+
+  /* Allows this arena to be used as a generic allocator.
+   *
+   * The arena does not need free() calls so when using Arena as an allocator
+   * it is safe to skip them.  However they are no-ops so there is no harm in
+   * calling free() either. */
+  upb_alloc *allocator() { return upb_arena_alloc(ptr_.get()); }
+
+  /* Add a cleanup function to run when the arena is destroyed.
+   * Returns false on out-of-memory. */
+  bool AddCleanup(void *ud, upb_cleanup_func* func) {
+    return upb_arena_addcleanup(ptr_.get(), ud, func);
+  }
+
+  /* Total number of bytes that have been allocated.  It is undefined what
+   * Realloc() does to &arena_ counter. */
+  size_t BytesAllocated() const { return upb_arena_bytesallocated(ptr_.get()); }
+
+ private:
+  std::unique_ptr<upb_arena, decltype(&upb_arena_free)> ptr_;
+};
+
+#endif
+
+/* upb::InlinedArena **********************************************************/
+
+/* upb::InlinedArena seeds the arenas with a predefined amount of memory.  No
+ * heap memory will be allocated until the initial block is exceeded.
+ *
+ * These types only exist in C++ */
+
+#ifdef __cplusplus
+
+template <int N> class upb::InlinedArena : public upb::Arena {
+ public:
+  InlinedArena() : ptr_(upb_arena_new(&initial_block_, N, &upb_alloc_global)) {}
+
+  upb_arena* ptr() { return ptr_.get(); }
+
+ private:
+  InlinedArena(const InlinedArena*) = delete;
+  InlinedArena& operator=(const InlinedArena*) = delete;
+
+  std::unique_ptr<upb_arena, decltype(&upb_arena_free)> ptr_;
+  char initial_block_[N];
+};
+
+#endif  /* __cplusplus */
+
+/* Constants ******************************************************************/
+
+/* Generic function type. */
+typedef void upb_func(void);
+
+/* A list of types as they are encoded on-the-wire. */
+typedef enum {
+  UPB_WIRE_TYPE_VARINT      = 0,
+  UPB_WIRE_TYPE_64BIT       = 1,
+  UPB_WIRE_TYPE_DELIMITED   = 2,
+  UPB_WIRE_TYPE_START_GROUP = 3,
+  UPB_WIRE_TYPE_END_GROUP   = 4,
+  UPB_WIRE_TYPE_32BIT       = 5
+} upb_wiretype_t;
+
+/* The types a field can have.  Note that this list is not identical to the
+ * types defined in descriptor.proto, which gives INT32 and SINT32 separate
+ * types (we distinguish the two with the "integer encoding" enum below). */
+typedef enum {
+  /* Types stored in 1 byte. */
+  UPB_TYPE_BOOL     = 1,
+  /* Types stored in 4 bytes. */
+  UPB_TYPE_FLOAT    = 2,
+  UPB_TYPE_INT32    = 3,
+  UPB_TYPE_UINT32   = 4,
+  UPB_TYPE_ENUM     = 5,  /* Enum values are int32. */
+  /* Types stored as pointers (probably 4 or 8 bytes). */
+  UPB_TYPE_STRING   = 6,
+  UPB_TYPE_BYTES    = 7,
+  UPB_TYPE_MESSAGE  = 8,
+  /* Types stored as 8 bytes. */
+  UPB_TYPE_DOUBLE   = 9,
+  UPB_TYPE_INT64    = 10,
+  UPB_TYPE_UINT64   = 11
+} upb_fieldtype_t;
+
+/* The repeated-ness of each field; this matches descriptor.proto. */
+typedef enum {
+  UPB_LABEL_OPTIONAL = 1,
+  UPB_LABEL_REQUIRED = 2,
+  UPB_LABEL_REPEATED = 3
+} upb_label_t;
+
+/* Descriptor types, as defined in descriptor.proto. */
+typedef enum {
+  UPB_DESCRIPTOR_TYPE_DOUBLE   = 1,
+  UPB_DESCRIPTOR_TYPE_FLOAT    = 2,
+  UPB_DESCRIPTOR_TYPE_INT64    = 3,
+  UPB_DESCRIPTOR_TYPE_UINT64   = 4,
+  UPB_DESCRIPTOR_TYPE_INT32    = 5,
+  UPB_DESCRIPTOR_TYPE_FIXED64  = 6,
+  UPB_DESCRIPTOR_TYPE_FIXED32  = 7,
+  UPB_DESCRIPTOR_TYPE_BOOL     = 8,
+  UPB_DESCRIPTOR_TYPE_STRING   = 9,
+  UPB_DESCRIPTOR_TYPE_GROUP    = 10,
+  UPB_DESCRIPTOR_TYPE_MESSAGE  = 11,
+  UPB_DESCRIPTOR_TYPE_BYTES    = 12,
+  UPB_DESCRIPTOR_TYPE_UINT32   = 13,
+  UPB_DESCRIPTOR_TYPE_ENUM     = 14,
+  UPB_DESCRIPTOR_TYPE_SFIXED32 = 15,
+  UPB_DESCRIPTOR_TYPE_SFIXED64 = 16,
+  UPB_DESCRIPTOR_TYPE_SINT32   = 17,
+  UPB_DESCRIPTOR_TYPE_SINT64   = 18
+} upb_descriptortype_t;
+
+extern const uint8_t upb_desctype_to_fieldtype[];
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/LICENSE b/ChattingApp 000/Pods/gRPC-Core/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/LICENSE	
@@ -0,0 +1,202 @@
+
+                                 Apache License
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+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      any Contribution intentionally submitted for inclusion in the Work
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diff --git a/ChattingApp 000/Pods/gRPC-Core/README.md b/ChattingApp 000/Pods/gRPC-Core/README.md
new file mode 100644
index 0000000..d3eee33
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/README.md	
@@ -0,0 +1,85 @@
+gRPC - An RPC library and framework
+===================================
+
+gRPC is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. gRPC enables client and server applications to communicate transparently, and simplifies the building of connected systems.
+
+<table>
+  <tr>
+    <td><b>Homepage:</b></td>
+    <td><a href="https://grpc.io/">grpc.io</a></td>
+  </tr>
+  <tr>
+    <td><b>Mailing List:</b></td>
+    <td><a href="https://groups.google.com/forum/#!forum/grpc-io">grpc-io@googlegroups.com</a></td>
+  </tr>
+</table>
+
+[![Join the chat at https://gitter.im/grpc/grpc](https://badges.gitter.im/grpc/grpc.svg)](https://gitter.im/grpc/grpc?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+# To start using gRPC
+
+To maximize usability, gRPC supports the standard method for adding dependencies to a user's chosen language (if there is one).
+In most languages, the gRPC runtime comes as a package available in a user's language package manager.
+
+For instructions on how to use the language-specific gRPC runtime for a project, please refer to these documents
+
+ * [C++](src/cpp): follow the instructions under the `src/cpp` directory
+ * [C#](src/csharp): NuGet package `Grpc`
+ * [Dart](https://github.com/grpc/grpc-dart): pub package `grpc`
+ * [Go](https://github.com/grpc/grpc-go): `go get google.golang.org/grpc`
+ * [Java](https://github.com/grpc/grpc-java): Use JARs from Maven Central Repository
+ * [Node](https://github.com/grpc/grpc-node): `npm install grpc`
+ * [Objective-C](src/objective-c): Add `gRPC-ProtoRPC` dependency to podspec
+ * [PHP](src/php): `pecl install grpc`
+ * [Python](src/python/grpcio): `pip install grpcio`
+ * [Ruby](src/ruby): `gem install grpc`
+ * [WebJS](https://github.com/grpc/grpc-web): follow the grpc-web instructions
+
+Per-language quickstart guides and tutorials can be found in the [documentation section on the grpc.io website](https://grpc.io/docs/). Code examples are available in the [examples](examples) directory.
+
+Precompiled bleeding-edge package builds of gRPC `master` branch's `HEAD` are uploaded daily to [packages.grpc.io](https://packages.grpc.io).
+
+# To start developing gRPC
+
+Contributions are welcome!
+
+Please read [How to contribute](CONTRIBUTING.md) which will guide you through the entire workflow of how to build the source code, how to run the tests, and how to contribute changes to
+the gRPC codebase.
+The "How to contribute" document also contains info on how the contribution process works and contains best practices for creating contributions.
+
+# Troubleshooting
+
+Sometimes things go wrong. Please check out the [Troubleshooting guide](TROUBLESHOOTING.md) if you are experiencing issues with gRPC.
+
+# Performance 
+
+See the [Performance dashboard](https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584) for performance numbers of master branch daily builds.
+
+# Concepts
+
+See [gRPC Concepts](CONCEPTS.md)
+
+# About This Repository
+
+This repository contains source code for gRPC libraries implemented in multiple languages written on top of a shared C core library [src/core](src/core).
+
+Libraries in different languages may be in various states of development. We are seeking contributions for all of these libraries:
+
+| Language                | Source                              |
+|-------------------------|-------------------------------------|
+| Shared C [core library] | [src/core](src/core)                |
+| C++                     | [src/cpp](src/cpp)                  |
+| Ruby                    | [src/ruby](src/ruby)                |
+| Python                  | [src/python](src/python)            |
+| PHP                     | [src/php](src/php)                  |
+| C# (core library based) | [src/csharp](src/csharp)            |
+| Objective-C             | [src/objective-c](src/objective-c)  |
+
+| Language                | Source repo                                          |
+|-------------------------|------------------------------------------------------|
+| Java                    | [grpc-java](https://github.com/grpc/grpc-java)        |
+| Go                      | [grpc-go](https://github.com/grpc/grpc-go)            |
+| NodeJS                  | [grpc-node](https://github.com/grpc/grpc-node)       |
+| WebJS                   | [grpc-web](https://github.com/grpc/grpc-web)         |
+| Dart                    | [grpc-dart](https://github.com/grpc/grpc-dart)       |
+| .NET (pure C# impl.)    | [grpc-dotnet](https://github.com/grpc/grpc-dotnet)   |
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer.h
new file mode 100644
index 0000000..ee740f4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer.h	
@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_BYTE_BUFFER_H
+#define GRPC_BYTE_BUFFER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/byte_buffer.h>
+#include <grpc/slice_buffer.h>
+
+#endif /* GRPC_BYTE_BUFFER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer_reader.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer_reader.h
new file mode 100644
index 0000000..15e06ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/byte_buffer_reader.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_BYTE_BUFFER_READER_H
+#define GRPC_BYTE_BUFFER_READER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/byte_buffer_reader.h>
+
+#endif /* GRPC_BYTE_BUFFER_READER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/census.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/census.h
new file mode 100644
index 0000000..4894f1c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/census.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CENSUS_H
+#define GRPC_CENSUS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  A Census Context is a handle used by Census to represent the current tracing
+  and stats collection information. Contexts should be propagated across RPC's
+  (this is the responsibility of the local RPC system). */
+typedef struct census_context census_context;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CENSUS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/compression.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/compression.h
new file mode 100644
index 0000000..a4f6a8f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/compression.h	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_COMPRESSION_H
+#define GRPC_COMPRESSION_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stdlib.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/slice.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Return if an algorithm is message compression algorithm. */
+GRPCAPI int grpc_compression_algorithm_is_message(
+    grpc_compression_algorithm algorithm);
+
+/** Return if an algorithm is stream compression algorithm. */
+GRPCAPI int grpc_compression_algorithm_is_stream(
+    grpc_compression_algorithm algorithm);
+
+/** Parses the \a slice as a grpc_compression_algorithm instance and updating \a
+ * algorithm. Returns 1 upon success, 0 otherwise. */
+GRPCAPI int grpc_compression_algorithm_parse(
+    grpc_slice value, grpc_compression_algorithm* algorithm);
+
+/** Updates \a name with the encoding name corresponding to a valid \a
+ * algorithm. Note that \a name is statically allocated and must *not* be freed.
+ * Returns 1 upon success, 0 otherwise. */
+GRPCAPI int grpc_compression_algorithm_name(
+    grpc_compression_algorithm algorithm, const char** name);
+
+/** Returns the compression algorithm corresponding to \a level for the
+ * compression algorithms encoded in the \a accepted_encodings bitset.*/
+GRPCAPI grpc_compression_algorithm grpc_compression_algorithm_for_level(
+    grpc_compression_level level, uint32_t accepted_encodings);
+
+GRPCAPI void grpc_compression_options_init(grpc_compression_options* opts);
+
+/** Mark \a algorithm as enabled in \a opts. */
+GRPCAPI void grpc_compression_options_enable_algorithm(
+    grpc_compression_options* opts, grpc_compression_algorithm algorithm);
+
+/** Mark \a algorithm as disabled in \a opts. */
+GRPCAPI void grpc_compression_options_disable_algorithm(
+    grpc_compression_options* opts, grpc_compression_algorithm algorithm);
+
+/** Returns true if \a algorithm is marked as enabled in \a opts. */
+GRPCAPI int grpc_compression_options_is_algorithm_enabled(
+    const grpc_compression_options* opts, grpc_compression_algorithm algorithm);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_COMPRESSION_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/fork.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/fork.h
new file mode 100644
index 0000000..26f9df9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/fork.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_FORK_H
+#define GRPC_FORK_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/fork.h>
+
+#endif /* GRPC_FORK_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc.h
new file mode 100644
index 0000000..cb46477
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc.h	
@@ -0,0 +1,540 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_GRPC_H
+#define GRPC_GRPC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/impl/codegen/connectivity_state.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/impl/codegen/propagation_bits.h>
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*! \mainpage GRPC Core
+ *
+ * The GRPC Core library is a low-level library designed to be wrapped by higher
+ * level libraries. The top-level API is provided in grpc.h. Security related
+ * functionality lives in grpc_security.h.
+ */
+
+GRPCAPI void grpc_metadata_array_init(grpc_metadata_array* array);
+GRPCAPI void grpc_metadata_array_destroy(grpc_metadata_array* array);
+
+GRPCAPI void grpc_call_details_init(grpc_call_details* details);
+GRPCAPI void grpc_call_details_destroy(grpc_call_details* details);
+
+/** Registers a plugin to be initialized and destroyed with the library.
+
+    The \a init and \a destroy functions will be invoked as part of
+    \a grpc_init() and \a grpc_shutdown(), respectively.
+    Note that these functions can be invoked an arbitrary number of times
+    (and hence so will \a init and \a destroy).
+    It is safe to pass NULL to either argument. Plugins are destroyed in
+    the reverse order they were initialized. */
+GRPCAPI void grpc_register_plugin(void (*init)(void), void (*destroy)(void));
+
+/** Initialize the grpc library.
+
+    After it's called, a matching invocation to grpc_shutdown() is expected.
+
+    It is not safe to call any other grpc functions before calling this.
+    (To avoid overhead, little checking is done, and some things may work. We
+    do not warrant that they will continue to do so in future revisions of this
+    library). */
+GRPCAPI void grpc_init(void);
+
+/** Shut down the grpc library.
+
+    Before it's called, there should haven been a matching invocation to
+    grpc_init().
+
+    The last call to grpc_shutdown will initiate cleaning up of grpc library
+    internals, which can happen in another thread. Once the clean-up is done,
+    no memory is used by grpc, nor are any instructions executing within the
+    grpc library.  Prior to calling, all application owned grpc objects must
+    have been destroyed. */
+GRPCAPI void grpc_shutdown(void);
+
+/** EXPERIMENTAL. Returns 1 if the grpc library has been initialized.
+    TODO(ericgribkoff) Decide if this should be promoted to non-experimental as
+    part of stabilizing the fork support API, as tracked in
+    https://github.com/grpc/grpc/issues/15334 */
+GRPCAPI int grpc_is_initialized(void);
+
+/** EXPERIMENTAL. Blocking shut down grpc library.
+    This is only for wrapped language to use now. */
+GRPCAPI void grpc_shutdown_blocking(void);
+
+/** Return a string representing the current version of grpc */
+GRPCAPI const char* grpc_version_string(void);
+
+/** Return a string specifying what the 'g' in gRPC stands for */
+GRPCAPI const char* grpc_g_stands_for(void);
+
+/** Returns the completion queue factory based on the attributes. MAY return a
+    NULL if no factory can be found */
+GRPCAPI const grpc_completion_queue_factory*
+grpc_completion_queue_factory_lookup(
+    const grpc_completion_queue_attributes* attributes);
+
+/** Helper function to create a completion queue with grpc_cq_completion_type
+    of GRPC_CQ_NEXT and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
+GRPCAPI grpc_completion_queue* grpc_completion_queue_create_for_next(
+    void* reserved);
+
+/** Helper function to create a completion queue with grpc_cq_completion_type
+    of GRPC_CQ_PLUCK and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
+GRPCAPI grpc_completion_queue* grpc_completion_queue_create_for_pluck(
+    void* reserved);
+
+/** Helper function to create a completion queue with grpc_cq_completion_type
+    of GRPC_CQ_CALLBACK and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING.
+    This function is experimental. */
+GRPCAPI grpc_completion_queue* grpc_completion_queue_create_for_callback(
+    grpc_experimental_completion_queue_functor* shutdown_callback,
+    void* reserved);
+
+/** Create a completion queue */
+GRPCAPI grpc_completion_queue* grpc_completion_queue_create(
+    const grpc_completion_queue_factory* factory,
+    const grpc_completion_queue_attributes* attributes, void* reserved);
+
+/** Blocks until an event is available, the completion queue is being shut down,
+    or deadline is reached.
+
+    Returns a grpc_event with type GRPC_QUEUE_TIMEOUT on timeout,
+    otherwise a grpc_event describing the event that occurred.
+
+    Callers must not call grpc_completion_queue_next and
+    grpc_completion_queue_pluck simultaneously on the same completion queue. */
+GRPCAPI grpc_event grpc_completion_queue_next(grpc_completion_queue* cq,
+                                              gpr_timespec deadline,
+                                              void* reserved);
+
+/** Blocks until an event with tag 'tag' is available, the completion queue is
+    being shutdown or deadline is reached.
+
+    Returns a grpc_event with type GRPC_QUEUE_TIMEOUT on timeout,
+    otherwise a grpc_event describing the event that occurred.
+
+    Callers must not call grpc_completion_queue_next and
+    grpc_completion_queue_pluck simultaneously on the same completion queue.
+
+    Completion queues support a maximum of GRPC_MAX_COMPLETION_QUEUE_PLUCKERS
+    concurrently executing plucks at any time. */
+GRPCAPI grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq,
+                                               void* tag, gpr_timespec deadline,
+                                               void* reserved);
+
+/** Maximum number of outstanding grpc_completion_queue_pluck executions per
+    completion queue */
+#define GRPC_MAX_COMPLETION_QUEUE_PLUCKERS 6
+
+/** Begin destruction of a completion queue. Once all possible events are
+    drained then grpc_completion_queue_next will start to produce
+    GRPC_QUEUE_SHUTDOWN events only. At that point it's safe to call
+    grpc_completion_queue_destroy.
+
+    After calling this function applications should ensure that no
+    NEW work is added to be published on this completion queue. */
+GRPCAPI void grpc_completion_queue_shutdown(grpc_completion_queue* cq);
+
+/** Destroy a completion queue. The caller must ensure that the queue is
+    drained and no threads are executing grpc_completion_queue_next */
+GRPCAPI void grpc_completion_queue_destroy(grpc_completion_queue* cq);
+
+/*********** EXPERIMENTAL API ************/
+/** Initializes a thread local cache for \a cq.
+ * grpc_flush_cq_tls_cache() MUST be called on the same thread,
+ * with the same cq.
+ */
+GRPCAPI void grpc_completion_queue_thread_local_cache_init(
+    grpc_completion_queue* cq);
+
+/*********** EXPERIMENTAL API ************/
+/** Flushes the thread local cache for \a cq.
+ * Returns 1 if there was contents in the cache.  If there was an event
+ * in \a cq tls cache, its tag is placed in tag, and ok is set to the
+ * event success.
+ */
+GRPCAPI int grpc_completion_queue_thread_local_cache_flush(
+    grpc_completion_queue* cq, void** tag, int* ok);
+
+/** Check the connectivity state of a channel. */
+GRPCAPI grpc_connectivity_state grpc_channel_check_connectivity_state(
+    grpc_channel* channel, int try_to_connect);
+
+/** Number of active "external connectivity state watchers" attached to a
+ * channel.
+ * Useful for testing. **/
+GRPCAPI int grpc_channel_num_external_connectivity_watchers(
+    grpc_channel* channel);
+
+/** Watch for a change in connectivity state.
+    Once the channel connectivity state is different from last_observed_state,
+    tag will be enqueued on cq with success=1.
+    If deadline expires BEFORE the state is changed, tag will be enqueued on cq
+    with success=0. */
+GRPCAPI void grpc_channel_watch_connectivity_state(
+    grpc_channel* channel, grpc_connectivity_state last_observed_state,
+    gpr_timespec deadline, grpc_completion_queue* cq, void* tag);
+
+/** Check whether a grpc channel supports connectivity watcher */
+GRPCAPI int grpc_channel_support_connectivity_watcher(grpc_channel* channel);
+
+/** Create a call given a grpc_channel, in order to call 'method'. All
+    completions are sent to 'completion_queue'. 'method' and 'host' need only
+    live through the invocation of this function.
+    If parent_call is non-NULL, it must be a server-side call. It will be used
+    to propagate properties from the server call to this new client call,
+    depending on the value of \a propagation_mask (see propagation_bits.h for
+    possible values). */
+GRPCAPI grpc_call* grpc_channel_create_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_completion_queue* completion_queue, grpc_slice method,
+    const grpc_slice* host, gpr_timespec deadline, void* reserved);
+
+/** Ping the channels peer (load balanced channels will select one sub-channel
+    to ping); if the channel is not connected, posts a failed. */
+GRPCAPI void grpc_channel_ping(grpc_channel* channel, grpc_completion_queue* cq,
+                               void* tag, void* reserved);
+
+/** Pre-register a method/host pair on a channel.
+    method and host are not owned and must remain alive while the server is
+    running. */
+GRPCAPI void* grpc_channel_register_call(grpc_channel* channel,
+                                         const char* method, const char* host,
+                                         void* reserved);
+
+/** Create a call given a handle returned from grpc_channel_register_call.
+    \sa grpc_channel_create_call. */
+GRPCAPI grpc_call* grpc_channel_create_registered_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_completion_queue* completion_queue, void* registered_call_handle,
+    gpr_timespec deadline, void* reserved);
+
+/** Allocate memory in the grpc_call arena: this memory is automatically
+    discarded at call completion */
+GRPCAPI void* grpc_call_arena_alloc(grpc_call* call, size_t size);
+
+/** Start a batch of operations defined in the array ops; when complete, post a
+    completion of type 'tag' to the completion queue bound to the call.
+    The order of ops specified in the batch has no significance.
+    Only one operation of each type can be active at once in any given
+    batch.
+    If a call to grpc_call_start_batch returns GRPC_CALL_OK you must call
+    grpc_completion_queue_next or grpc_completion_queue_pluck on the completion
+    queue associated with 'call' for work to be performed. If a call to
+    grpc_call_start_batch returns any value other than GRPC_CALL_OK it is
+    guaranteed that no state associated with 'call' is changed and it is not
+    appropriate to call grpc_completion_queue_next or
+    grpc_completion_queue_pluck consequent to the failed grpc_call_start_batch
+    call.
+    If a call to grpc_call_start_batch with an empty batch returns
+    GRPC_CALL_OK, the tag is put in the completion queue immediately.
+    THREAD SAFETY: access to grpc_call_start_batch in multi-threaded environment
+    needs to be synchronized. As an optimization, you may synchronize batches
+    containing just send operations independently from batches containing just
+    receive operations. Access to grpc_call_start_batch with an empty batch is
+    thread-compatible. */
+GRPCAPI grpc_call_error grpc_call_start_batch(grpc_call* call,
+                                              const grpc_op* ops, size_t nops,
+                                              void* tag, void* reserved);
+
+/** Returns a newly allocated string representing the endpoint to which this
+    call is communicating with. The string is in the uri format accepted by
+    grpc_channel_create.
+    The returned string should be disposed of with gpr_free().
+
+    WARNING: this value is never authenticated or subject to any security
+    related code. It must not be used for any authentication related
+    functionality. Instead, use grpc_auth_context. */
+GRPCAPI char* grpc_call_get_peer(grpc_call* call);
+
+struct census_context;
+
+/** Set census context for a call; Must be called before first call to
+   grpc_call_start_batch(). */
+GRPCAPI void grpc_census_call_set_context(grpc_call* call,
+                                          struct census_context* context);
+
+/** Retrieve the calls current census context. */
+GRPCAPI struct census_context* grpc_census_call_get_context(grpc_call* call);
+
+/** Return a newly allocated string representing the target a channel was
+    created for. */
+GRPCAPI char* grpc_channel_get_target(grpc_channel* channel);
+
+/** Request info about the channel.
+    \a channel_info indicates what information is being requested and
+    how that information will be returned.
+    \a channel_info is owned by the caller. */
+GRPCAPI void grpc_channel_get_info(grpc_channel* channel,
+                                   const grpc_channel_info* channel_info);
+
+/** EXPERIMENTAL.  Resets the channel's connect backoff.
+    TODO(roth): When we see whether this proves useful, either promote
+    to non-experimental or remove it. */
+GRPCAPI void grpc_channel_reset_connect_backoff(grpc_channel* channel);
+
+/** Create a client channel to 'target'. Additional channel level configuration
+    MAY be provided by grpc_channel_args, though the expectation is that most
+    clients will want to simply pass NULL. The user data in 'args' need only
+    live through the invocation of this function. However, if any args of the
+    'pointer' type are passed, then the referenced vtable must be maintained
+    by the caller until grpc_channel_destroy terminates. See grpc_channel_args
+    definition for more on this. */
+GRPCAPI grpc_channel* grpc_insecure_channel_create(
+    const char* target, const grpc_channel_args* args, void* reserved);
+
+/** Create a lame client: this client fails every operation attempted on it. */
+GRPCAPI grpc_channel* grpc_lame_client_channel_create(
+    const char* target, grpc_status_code error_code, const char* error_message);
+
+/** Close and destroy a grpc channel */
+GRPCAPI void grpc_channel_destroy(grpc_channel* channel);
+
+/** Error handling for grpc_call
+   Most grpc_call functions return a grpc_error. If the error is not GRPC_OK
+   then the operation failed due to some unsatisfied precondition.
+   If a grpc_call fails, it's guaranteed that no change to the call state
+   has been made. */
+
+/** Cancel an RPC.
+    Can be called multiple times, from any thread.
+    THREAD-SAFETY grpc_call_cancel and grpc_call_cancel_with_status
+    are thread-safe, and can be called at any point before grpc_call_unref
+    is called.*/
+GRPCAPI grpc_call_error grpc_call_cancel(grpc_call* call, void* reserved);
+
+/** Cancel an RPC.
+    Can be called multiple times, from any thread.
+    If a status has not been received for the call, set it to the status code
+    and description passed in.
+    Importantly, this function does not send status nor description to the
+    remote endpoint.
+    Note that \a description doesn't need be a static string.
+    It doesn't need to be alive after the call to
+    grpc_call_cancel_with_status completes.
+    */
+GRPCAPI grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
+                                                     grpc_status_code status,
+                                                     const char* description,
+                                                     void* reserved);
+
+/** Ref a call.
+    THREAD SAFETY: grpc_call_ref is thread-compatible */
+GRPCAPI void grpc_call_ref(grpc_call* call);
+
+/** Unref a call.
+    THREAD SAFETY: grpc_call_unref is thread-compatible */
+GRPCAPI void grpc_call_unref(grpc_call* call);
+
+/** Request notification of a new call.
+    Once a call is received, a notification tagged with \a tag_new is added to
+    \a cq_for_notification. \a call, \a details and \a request_metadata are
+    updated with the appropriate call information. \a cq_bound_to_call is bound
+    to \a call, and batch operation notifications for that call will be posted
+    to \a cq_bound_to_call.
+    Note that \a cq_for_notification must have been registered to the server via
+    \a grpc_server_register_completion_queue. */
+GRPCAPI grpc_call_error grpc_server_request_call(
+    grpc_server* server, grpc_call** call, grpc_call_details* details,
+    grpc_metadata_array* request_metadata,
+    grpc_completion_queue* cq_bound_to_call,
+    grpc_completion_queue* cq_for_notification, void* tag_new);
+
+/** How to handle payloads for a registered method */
+typedef enum {
+  /** Don't try to read the payload */
+  GRPC_SRM_PAYLOAD_NONE,
+  /** Read the initial payload as a byte buffer */
+  GRPC_SRM_PAYLOAD_READ_INITIAL_BYTE_BUFFER
+} grpc_server_register_method_payload_handling;
+
+/** Registers a method in the server.
+    Methods to this (host, method) pair will not be reported by
+    grpc_server_request_call, but instead be reported by
+    grpc_server_request_registered_call when passed the appropriate
+    registered_method (as returned by this function).
+    Must be called before grpc_server_start.
+    Returns NULL on failure. */
+GRPCAPI void* grpc_server_register_method(
+    grpc_server* server, const char* method, const char* host,
+    grpc_server_register_method_payload_handling payload_handling,
+    uint32_t flags);
+
+/** Request notification of a new pre-registered call. 'cq_for_notification'
+    must have been registered to the server via
+    grpc_server_register_completion_queue. */
+GRPCAPI grpc_call_error grpc_server_request_registered_call(
+    grpc_server* server, void* registered_method, grpc_call** call,
+    gpr_timespec* deadline, grpc_metadata_array* request_metadata,
+    grpc_byte_buffer** optional_payload,
+    grpc_completion_queue* cq_bound_to_call,
+    grpc_completion_queue* cq_for_notification, void* tag_new);
+
+/** Create a server. Additional configuration for each incoming channel can
+    be specified with args. If no additional configuration is needed, args can
+    be NULL. The user data in 'args' need only live through the invocation of
+    this function. However, if any args of the 'pointer' type are passed, then
+    the referenced vtable must be maintained by the caller until
+    grpc_server_destroy terminates. See grpc_channel_args definition for more
+    on this. */
+GRPCAPI grpc_server* grpc_server_create(const grpc_channel_args* args,
+                                        void* reserved);
+
+/** Register a completion queue with the server. Must be done for any
+    notification completion queue that is passed to grpc_server_request_*_call
+    and to grpc_server_shutdown_and_notify. Must be performed prior to
+    grpc_server_start. */
+GRPCAPI void grpc_server_register_completion_queue(grpc_server* server,
+                                                   grpc_completion_queue* cq,
+                                                   void* reserved);
+
+/** Add a HTTP2 over plaintext over tcp listener.
+    Returns bound port number on success, 0 on failure.
+    REQUIRES: server not started */
+GRPCAPI int grpc_server_add_insecure_http2_port(grpc_server* server,
+                                                const char* addr);
+
+/** Start a server - tells all listeners to start listening */
+GRPCAPI void grpc_server_start(grpc_server* server);
+
+/** Begin shutting down a server.
+    After completion, no new calls or connections will be admitted.
+    Existing calls will be allowed to complete.
+    Send a GRPC_OP_COMPLETE event when there are no more calls being serviced.
+    Shutdown is idempotent, and all tags will be notified at once if multiple
+    grpc_server_shutdown_and_notify calls are made. 'cq' must have been
+    registered to this server via grpc_server_register_completion_queue. */
+GRPCAPI void grpc_server_shutdown_and_notify(grpc_server* server,
+                                             grpc_completion_queue* cq,
+                                             void* tag);
+
+/** Cancel all in-progress calls.
+    Only usable after shutdown. */
+GRPCAPI void grpc_server_cancel_all_calls(grpc_server* server);
+
+/** Destroy a server.
+    Shutdown must have completed beforehand (i.e. all tags generated by
+    grpc_server_shutdown_and_notify must have been received, and at least
+    one call to grpc_server_shutdown_and_notify must have been made). */
+GRPCAPI void grpc_server_destroy(grpc_server* server);
+
+/** Enable or disable a tracer.
+
+    Tracers (usually controlled by the environment variable GRPC_TRACE)
+    allow printf-style debugging on GRPC internals, and are useful for
+    tracking down problems in the field.
+
+    Use of this function is not strictly thread-safe, but the
+    thread-safety issues raised by it should not be of concern. */
+GRPCAPI int grpc_tracer_set_enabled(const char* name, int enabled);
+
+/** Check whether a metadata key is legal (will be accepted by core) */
+GRPCAPI int grpc_header_key_is_legal(grpc_slice slice);
+
+/** Check whether a non-binary metadata value is legal (will be accepted by
+    core) */
+GRPCAPI int grpc_header_nonbin_value_is_legal(grpc_slice slice);
+
+/** Check whether a metadata key corresponds to a binary value */
+GRPCAPI int grpc_is_binary_header(grpc_slice slice);
+
+/** Convert grpc_call_error values to a string */
+GRPCAPI const char* grpc_call_error_to_string(grpc_call_error error);
+
+/** Create a buffer pool */
+GRPCAPI grpc_resource_quota* grpc_resource_quota_create(const char* trace_name);
+
+/** Add a reference to a buffer pool */
+GRPCAPI void grpc_resource_quota_ref(grpc_resource_quota* resource_quota);
+
+/** Drop a reference to a buffer pool */
+GRPCAPI void grpc_resource_quota_unref(grpc_resource_quota* resource_quota);
+
+/** Update the size of a buffer pool */
+GRPCAPI void grpc_resource_quota_resize(grpc_resource_quota* resource_quota,
+                                        size_t new_size);
+
+/** Update the size of the maximum number of threads allowed */
+GRPCAPI void grpc_resource_quota_set_max_threads(
+    grpc_resource_quota* resource_quota, int new_max_threads);
+
+/** Fetch a vtable for a grpc_channel_arg that points to a grpc_resource_quota
+ */
+GRPCAPI const grpc_arg_pointer_vtable* grpc_resource_quota_arg_vtable(void);
+
+/************* CHANNELZ API *************/
+/** Channelz is under active development. The following APIs will see some
+    churn as the feature is implemented. This comment will be removed once
+    channelz is officially supported, and these APIs become stable. For now
+    you may track the progress by following this github issue:
+    https://github.com/grpc/grpc/issues/15340
+
+    the following APIs return allocated JSON strings that match the response
+    objects from the channelz proto, found here:
+    https://github.com/grpc/grpc/blob/master/src/proto/grpc/channelz/channelz.proto.
+
+    For easy conversion to protobuf, The JSON is formatted according to:
+    https://developers.google.com/protocol-buffers/docs/proto3#json. */
+
+/* Gets all root channels (i.e. channels the application has directly
+   created). This does not include subchannels nor non-top level channels.
+   The returned string is allocated and must be freed by the application. */
+GRPCAPI char* grpc_channelz_get_top_channels(intptr_t start_channel_id);
+
+/* Gets all servers that exist in the process. */
+GRPCAPI char* grpc_channelz_get_servers(intptr_t start_server_id);
+
+/* Returns a single Server, or else a NOT_FOUND code. */
+GRPCAPI char* grpc_channelz_get_server(intptr_t server_id);
+
+/* Gets all server sockets that exist in the server. */
+GRPCAPI char* grpc_channelz_get_server_sockets(intptr_t server_id,
+                                               intptr_t start_socket_id,
+                                               intptr_t max_results);
+
+/* Returns a single Channel, or else a NOT_FOUND code. The returned string
+   is allocated and must be freed by the application. */
+GRPCAPI char* grpc_channelz_get_channel(intptr_t channel_id);
+
+/* Returns a single Subchannel, or else a NOT_FOUND code. The returned string
+   is allocated and must be freed by the application. */
+GRPCAPI char* grpc_channelz_get_subchannel(intptr_t subchannel_id);
+
+/* Returns a single Socket, or else a NOT_FOUND code. The returned string
+   is allocated and must be freed by the application. */
+GRPCAPI char* grpc_channelz_get_socket(intptr_t socket_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_posix.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_posix.h
new file mode 100644
index 0000000..fbce5e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_posix.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_GRPC_POSIX_H
+#define GRPC_GRPC_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*! \mainpage GRPC Core POSIX
+ *
+ * The GRPC Core POSIX library provides some POSIX-specific low-level
+ * functionality on top of GRPC Core.
+ */
+
+/** Create a client channel to 'target' using file descriptor 'fd'. The 'target'
+    argument will be used to indicate the name for this channel. See the comment
+    for grpc_insecure_channel_create for description of 'args' argument. */
+GRPCAPI grpc_channel* grpc_insecure_channel_create_from_fd(
+    const char* target, int fd, const grpc_channel_args* args);
+
+/** Add the connected communication channel based on file descriptor 'fd' to the
+    'server'. The 'fd' must be an open file descriptor corresponding to a
+    connected socket. Events from the file descriptor may come on any of the
+    server completion queues (i.e completion queues registered via the
+    grpc_server_register_completion_queue API).
+
+    The 'reserved' pointer MUST be NULL.
+    */
+GRPCAPI void grpc_server_add_insecure_channel_from_fd(grpc_server* server,
+                                                      void* reserved, int fd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security.h
new file mode 100644
index 0000000..67af986
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security.h	
@@ -0,0 +1,998 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_GRPC_SECURITY_H
+#define GRPC_GRPC_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security_constants.h>
+#include <grpc/status.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** --- Authentication Context. --- */
+
+typedef struct grpc_auth_context grpc_auth_context;
+
+typedef struct grpc_auth_property_iterator {
+  const grpc_auth_context* ctx;
+  size_t index;
+  const char* name;
+} grpc_auth_property_iterator;
+
+/** value, if not NULL, is guaranteed to be NULL terminated. */
+typedef struct grpc_auth_property {
+  char* name;
+  char* value;
+  size_t value_length;
+} grpc_auth_property;
+
+/** Returns NULL when the iterator is at the end. */
+GRPCAPI const grpc_auth_property* grpc_auth_property_iterator_next(
+    grpc_auth_property_iterator* it);
+
+/** Iterates over the auth context. */
+GRPCAPI grpc_auth_property_iterator
+grpc_auth_context_property_iterator(const grpc_auth_context* ctx);
+
+/** Gets the peer identity. Returns an empty iterator (first _next will return
+   NULL) if the peer is not authenticated. */
+GRPCAPI grpc_auth_property_iterator
+grpc_auth_context_peer_identity(const grpc_auth_context* ctx);
+
+/** Finds a property in the context. May return an empty iterator (first _next
+   will return NULL) if no property with this name was found in the context. */
+GRPCAPI grpc_auth_property_iterator grpc_auth_context_find_properties_by_name(
+    const grpc_auth_context* ctx, const char* name);
+
+/** Gets the name of the property that indicates the peer identity. Will return
+   NULL if the peer is not authenticated. */
+GRPCAPI const char* grpc_auth_context_peer_identity_property_name(
+    const grpc_auth_context* ctx);
+
+/** Returns 1 if the peer is authenticated, 0 otherwise. */
+GRPCAPI int grpc_auth_context_peer_is_authenticated(
+    const grpc_auth_context* ctx);
+
+/** Gets the auth context from the call. Caller needs to call
+   grpc_auth_context_release on the returned context. */
+GRPCAPI grpc_auth_context* grpc_call_auth_context(grpc_call* call);
+
+/** Releases the auth context returned from grpc_call_auth_context. */
+GRPCAPI void grpc_auth_context_release(grpc_auth_context* context);
+
+/** --
+   The following auth context methods should only be called by a server metadata
+   processor to set properties extracted from auth metadata.
+   -- */
+
+/** Add a property. */
+GRPCAPI void grpc_auth_context_add_property(grpc_auth_context* ctx,
+                                            const char* name, const char* value,
+                                            size_t value_length);
+
+/** Add a C string property. */
+GRPCAPI void grpc_auth_context_add_cstring_property(grpc_auth_context* ctx,
+                                                    const char* name,
+                                                    const char* value);
+
+/** Sets the property name. Returns 1 if successful or 0 in case of failure
+   (which means that no property with this name exists). */
+GRPCAPI int grpc_auth_context_set_peer_identity_property_name(
+    grpc_auth_context* ctx, const char* name);
+
+/** --- SSL Session Cache. ---
+
+    A SSL session cache object represents a way to cache client sessions
+    between connections. Only ticket-based resumption is supported. */
+
+typedef struct grpc_ssl_session_cache grpc_ssl_session_cache;
+
+/** Create LRU cache for client-side SSL sessions with the given capacity.
+    If capacity is < 1, a default capacity is used instead. */
+GRPCAPI grpc_ssl_session_cache* grpc_ssl_session_cache_create_lru(
+    size_t capacity);
+
+/** Destroy SSL session cache. */
+GRPCAPI void grpc_ssl_session_cache_destroy(grpc_ssl_session_cache* cache);
+
+/** Create a channel arg with the given cache object. */
+GRPCAPI grpc_arg
+grpc_ssl_session_cache_create_channel_arg(grpc_ssl_session_cache* cache);
+
+/** --- grpc_channel_credentials object. ---
+
+   A channel credentials object represents a way to authenticate a client on a
+   channel.  */
+
+typedef struct grpc_channel_credentials grpc_channel_credentials;
+
+/** Releases a channel credentials object.
+   The creator of the credentials object is responsible for its release. */
+GRPCAPI void grpc_channel_credentials_release(grpc_channel_credentials* creds);
+
+/** Creates default credentials to connect to a google gRPC service.
+   WARNING: Do NOT use this credentials to connect to a non-google service as
+   this could result in an oauth2 token leak. The security level of the
+   resulting connection is GRPC_PRIVACY_AND_INTEGRITY. */
+GRPCAPI grpc_channel_credentials* grpc_google_default_credentials_create(void);
+
+/** Callback for getting the SSL roots override from the application.
+   In case of success, *pem_roots_certs must be set to a NULL terminated string
+   containing the list of PEM encoded root certificates. The ownership is passed
+   to the core and freed (laster by the core) with gpr_free.
+   If this function fails and GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment is
+   set to a valid path, it will override the roots specified this func */
+typedef grpc_ssl_roots_override_result (*grpc_ssl_roots_override_callback)(
+    char** pem_root_certs);
+
+/** Setup a callback to override the default TLS/SSL roots.
+   This function is not thread-safe and must be called at initialization time
+   before any ssl credentials are created to have the desired side effect.
+   If GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment is set to a valid path, the
+   callback will not be called. */
+GRPCAPI void grpc_set_ssl_roots_override_callback(
+    grpc_ssl_roots_override_callback cb);
+
+/** Object that holds a private key / certificate chain pair in PEM format. */
+typedef struct {
+  /** private_key is the NULL-terminated string containing the PEM encoding of
+     the client's private key. */
+  const char* private_key;
+
+  /** cert_chain is the NULL-terminated string containing the PEM encoding of
+     the client's certificate chain. */
+  const char* cert_chain;
+} grpc_ssl_pem_key_cert_pair;
+
+/** Deprecated in favor of grpc_ssl_verify_peer_options. It will be removed
+  after all of its call sites are migrated to grpc_ssl_verify_peer_options.
+  Object that holds additional peer-verification options on a secure
+  channel. */
+typedef struct {
+  /** If non-NULL this callback will be invoked with the expected
+     target_name, the peer's certificate (in PEM format), and whatever
+     userdata pointer is set below. If a non-zero value is returned by this
+     callback then it is treated as a verification failure. Invocation of
+     the callback is blocking, so any implementation should be light-weight.
+     */
+  int (*verify_peer_callback)(const char* target_name, const char* peer_pem,
+                              void* userdata);
+  /** Arbitrary userdata that will be passed as the last argument to
+     verify_peer_callback. */
+  void* verify_peer_callback_userdata;
+  /** A destruct callback that will be invoked when the channel is being
+     cleaned up. The userdata argument will be passed to it. The intent is
+     to perform any cleanup associated with that userdata. */
+  void (*verify_peer_destruct)(void* userdata);
+} verify_peer_options;
+
+/** Object that holds additional peer-verification options on a secure
+   channel. */
+typedef struct {
+  /** If non-NULL this callback will be invoked with the expected
+     target_name, the peer's certificate (in PEM format), and whatever
+     userdata pointer is set below. If a non-zero value is returned by this
+     callback then it is treated as a verification failure. Invocation of
+     the callback is blocking, so any implementation should be light-weight.
+     */
+  int (*verify_peer_callback)(const char* target_name, const char* peer_pem,
+                              void* userdata);
+  /** Arbitrary userdata that will be passed as the last argument to
+     verify_peer_callback. */
+  void* verify_peer_callback_userdata;
+  /** A destruct callback that will be invoked when the channel is being
+     cleaned up. The userdata argument will be passed to it. The intent is
+     to perform any cleanup associated with that userdata. */
+  void (*verify_peer_destruct)(void* userdata);
+} grpc_ssl_verify_peer_options;
+
+/** Deprecated in favor of grpc_ssl_server_credentials_create_ex. It will be
+   removed after all of its call sites are migrated to
+   grpc_ssl_server_credentials_create_ex. Creates an SSL credentials object.
+   The security level of the resulting connection is GRPC_PRIVACY_AND_INTEGRITY.
+   - pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the server root certificates. If this parameter is NULL, the
+     implementation will first try to dereference the file pointed by the
+     GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable, and if that fails,
+     try to get the roots set by grpc_override_ssl_default_roots. Eventually,
+     if all these fail, it will try to get the roots from a well-known place on
+     disk (in the grpc install directory).
+
+     gRPC has implemented root cache if the underlying OpenSSL library supports
+     it. The gRPC root certificates cache is only applicable on the default
+     root certificates, which is used when this parameter is nullptr. If user
+     provides their own pem_root_certs, when creating an SSL credential object,
+     gRPC would not be able to cache it, and each subchannel will generate a
+     copy of the root store. So it is recommended to avoid providing large room
+     pem with pem_root_certs parameter to avoid excessive memory consumption,
+     particularly on mobile platforms such as iOS.
+   - pem_key_cert_pair is a pointer on the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair.
+   - verify_options is an optional verify_peer_options object which holds
+     additional options controlling how peer certificates are verified. For
+     example, you can supply a callback which receives the peer's certificate
+     with which you can do additional verification. Can be NULL, in which
+     case verification will retain default behavior. Any settings in
+     verify_options are copied during this call, so the verify_options
+     object can be released afterwards. */
+GRPCAPI grpc_channel_credentials* grpc_ssl_credentials_create(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const verify_peer_options* verify_options, void* reserved);
+
+/* Creates an SSL credentials object.
+   The security level of the resulting connection is GRPC_PRIVACY_AND_INTEGRITY.
+   - pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the server root certificates. If this parameter is NULL, the
+     implementation will first try to dereference the file pointed by the
+     GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable, and if that fails,
+     try to get the roots set by grpc_override_ssl_default_roots. Eventually,
+     if all these fail, it will try to get the roots from a well-known place on
+     disk (in the grpc install directory).
+
+     gRPC has implemented root cache if the underlying OpenSSL library supports
+     it. The gRPC root certificates cache is only applicable on the default
+     root certificates, which is used when this parameter is nullptr. If user
+     provides their own pem_root_certs, when creating an SSL credential object,
+     gRPC would not be able to cache it, and each subchannel will generate a
+     copy of the root store. So it is recommended to avoid providing large room
+     pem with pem_root_certs parameter to avoid excessive memory consumption,
+     particularly on mobile platforms such as iOS.
+   - pem_key_cert_pair is a pointer on the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair.
+   - verify_options is an optional verify_peer_options object which holds
+     additional options controlling how peer certificates are verified. For
+     example, you can supply a callback which receives the peer's certificate
+     with which you can do additional verification. Can be NULL, in which
+     case verification will retain default behavior. Any settings in
+     verify_options are copied during this call, so the verify_options
+     object can be released afterwards. */
+GRPCAPI grpc_channel_credentials* grpc_ssl_credentials_create_ex(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const grpc_ssl_verify_peer_options* verify_options, void* reserved);
+
+/** --- grpc_call_credentials object.
+
+   A call credentials object represents a way to authenticate on a particular
+   call. These credentials can be composed with a channel credentials object
+   so that they are sent with every call on this channel.  */
+
+typedef struct grpc_call_credentials grpc_call_credentials;
+
+/** Releases a call credentials object.
+   The creator of the credentials object is responsible for its release. */
+GRPCAPI void grpc_call_credentials_release(grpc_call_credentials* creds);
+
+/** Creates a composite channel credentials object. The security level of
+ * resulting connection is determined by channel_creds. */
+GRPCAPI grpc_channel_credentials* grpc_composite_channel_credentials_create(
+    grpc_channel_credentials* channel_creds, grpc_call_credentials* call_creds,
+    void* reserved);
+
+/** Creates a composite call credentials object. */
+GRPCAPI grpc_call_credentials* grpc_composite_call_credentials_create(
+    grpc_call_credentials* creds1, grpc_call_credentials* creds2,
+    void* reserved);
+
+/** Creates a compute engine credentials object for connecting to Google.
+   WARNING: Do NOT use this credentials to connect to a non-google service as
+   this could result in an oauth2 token leak. */
+GRPCAPI grpc_call_credentials* grpc_google_compute_engine_credentials_create(
+    void* reserved);
+
+GRPCAPI gpr_timespec grpc_max_auth_token_lifetime(void);
+
+/** Creates a JWT credentials object. May return NULL if the input is invalid.
+   - json_key is the JSON key string containing the client's private key.
+   - token_lifetime is the lifetime of each Json Web Token (JWT) created with
+     this credentials.  It should not exceed grpc_max_auth_token_lifetime or
+     will be cropped to this value.  */
+GRPCAPI grpc_call_credentials*
+grpc_service_account_jwt_access_credentials_create(const char* json_key,
+                                                   gpr_timespec token_lifetime,
+                                                   void* reserved);
+
+/** Creates an Oauth2 Refresh Token credentials object for connecting to Google.
+   May return NULL if the input is invalid.
+   WARNING: Do NOT use this credentials to connect to a non-google service as
+   this could result in an oauth2 token leak.
+   - json_refresh_token is the JSON string containing the refresh token itself
+     along with a client_id and client_secret. */
+GRPCAPI grpc_call_credentials* grpc_google_refresh_token_credentials_create(
+    const char* json_refresh_token, void* reserved);
+
+/** Creates an Oauth2 Access Token credentials with an access token that was
+   acquired by an out of band mechanism. */
+GRPCAPI grpc_call_credentials* grpc_access_token_credentials_create(
+    const char* access_token, void* reserved);
+
+/** Creates an IAM credentials object for connecting to Google. */
+GRPCAPI grpc_call_credentials* grpc_google_iam_credentials_create(
+    const char* authorization_token, const char* authority_selector,
+    void* reserved);
+
+/** Options for creating STS Oauth Token Exchange credentials following the IETF
+   draft https://tools.ietf.org/html/draft-ietf-oauth-token-exchange-16.
+   Optional fields may be set to NULL or empty string. It is the responsibility
+   of the caller to ensure that the subject and actor tokens are refreshed on
+   disk at the specified paths. This API is used for experimental purposes for
+   now and may change in the future. */
+typedef struct {
+  const char* token_exchange_service_uri; /* Required. */
+  const char* resource;                   /* Optional. */
+  const char* audience;                   /* Optional. */
+  const char* scope;                      /* Optional. */
+  const char* requested_token_type;       /* Optional. */
+  const char* subject_token_path;         /* Required. */
+  const char* subject_token_type;         /* Required. */
+  const char* actor_token_path;           /* Optional. */
+  const char* actor_token_type;           /* Optional. */
+} grpc_sts_credentials_options;
+
+/** Creates an STS credentials following the STS Token Exchanged specifed in the
+   IETF draft https://tools.ietf.org/html/draft-ietf-oauth-token-exchange-16.
+   This API is used for experimental purposes for now and may change in the
+   future. */
+GRPCAPI grpc_call_credentials* grpc_sts_credentials_create(
+    const grpc_sts_credentials_options* options, void* reserved);
+
+/** Callback function to be called by the metadata credentials plugin
+   implementation when the metadata is ready.
+   - user_data is the opaque pointer that was passed in the get_metadata method
+     of the grpc_metadata_credentials_plugin (see below).
+   - creds_md is an array of credentials metadata produced by the plugin. It
+     may be set to NULL in case of an error.
+   - num_creds_md is the number of items in the creds_md array.
+   - status must be GRPC_STATUS_OK in case of success or another specific error
+     code otherwise.
+   - error_details contains details about the error if any. In case of success
+     it should be NULL and will be otherwise ignored. */
+typedef void (*grpc_credentials_plugin_metadata_cb)(
+    void* user_data, const grpc_metadata* creds_md, size_t num_creds_md,
+    grpc_status_code status, const char* error_details);
+
+/** Context that can be used by metadata credentials plugin in order to create
+   auth related metadata. */
+typedef struct {
+  /** The fully qualifed service url. */
+  const char* service_url;
+
+  /** The method name of the RPC being called (not fully qualified).
+     The fully qualified method name can be built from the service_url:
+     full_qualified_method_name = ctx->service_url + '/' + ctx->method_name. */
+  const char* method_name;
+
+  /** The auth_context of the channel which gives the server's identity. */
+  const grpc_auth_context* channel_auth_context;
+
+  /** Reserved for future use. */
+  void* reserved;
+} grpc_auth_metadata_context;
+
+/** Maximum number of metadata entries returnable by a credentials plugin via
+    a synchronous return. */
+#define GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX 4
+
+/** grpc_metadata_credentials plugin is an API user provided structure used to
+   create grpc_credentials objects that can be set on a channel (composed) or
+   a call. See grpc_credentials_metadata_create_from_plugin below.
+   The grpc client stack will call the get_metadata method of the plugin for
+   every call in scope for the credentials created from it. */
+typedef struct {
+  /** The implementation of this method has to be non-blocking, but can
+     be performed synchronously or asynchronously.
+
+     If processing occurs synchronously, returns non-zero and populates
+     creds_md, num_creds_md, status, and error_details.  In this case,
+     the caller takes ownership of the entries in creds_md and of
+     error_details.  Note that if the plugin needs to return more than
+     GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX entries in creds_md, it must
+     return asynchronously.
+
+     If processing occurs asynchronously, returns zero and invokes \a cb
+     when processing is completed.  \a user_data will be passed as the
+     first parameter of the callback.  NOTE: \a cb MUST be invoked in a
+     different thread, not from the thread in which \a get_metadata() is
+     invoked.
+
+     \a context is the information that can be used by the plugin to create
+     auth metadata. */
+  int (*get_metadata)(
+      void* state, grpc_auth_metadata_context context,
+      grpc_credentials_plugin_metadata_cb cb, void* user_data,
+      grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
+      size_t* num_creds_md, grpc_status_code* status,
+      const char** error_details);
+
+  /** Destroys the plugin state. */
+  void (*destroy)(void* state);
+
+  /** State that will be set as the first parameter of the methods above. */
+  void* state;
+
+  /** Type of credentials that this plugin is implementing. */
+  const char* type;
+} grpc_metadata_credentials_plugin;
+
+/** Creates a credentials object from a plugin with a specified minimum security
+ * level. */
+GRPCAPI grpc_call_credentials* grpc_metadata_credentials_create_from_plugin(
+    grpc_metadata_credentials_plugin plugin,
+    grpc_security_level min_security_level, void* reserved);
+
+/** --- Secure channel creation. --- */
+
+/** Creates a secure channel using the passed-in credentials. Additional
+    channel level configuration MAY be provided by grpc_channel_args, though
+    the expectation is that most clients will want to simply pass NULL. The
+    user data in 'args' need only live through the invocation of this function.
+    However, if any args of the 'pointer' type are passed, then the referenced
+    vtable must be maintained by the caller until grpc_channel_destroy
+    terminates. See grpc_channel_args definition for more on this. */
+GRPCAPI grpc_channel* grpc_secure_channel_create(
+    grpc_channel_credentials* creds, const char* target,
+    const grpc_channel_args* args, void* reserved);
+
+/** --- grpc_server_credentials object. ---
+
+   A server credentials object represents a way to authenticate a server.  */
+
+typedef struct grpc_server_credentials grpc_server_credentials;
+
+/** Releases a server_credentials object.
+   The creator of the server_credentials object is responsible for its release.
+   */
+GRPCAPI void grpc_server_credentials_release(grpc_server_credentials* creds);
+
+/** Server certificate config object holds the server's public certificates and
+   associated private keys, as well as any CA certificates needed for client
+   certificate validation (if applicable). Create using
+   grpc_ssl_server_certificate_config_create(). */
+typedef struct grpc_ssl_server_certificate_config
+    grpc_ssl_server_certificate_config;
+
+/** Creates a grpc_ssl_server_certificate_config object.
+   - pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the client root certificates. This parameter may be NULL if the server does
+     not want the client to be authenticated with SSL.
+   - pem_key_cert_pairs is an array private key / certificate chains of the
+     server. This parameter cannot be NULL.
+   - num_key_cert_pairs indicates the number of items in the private_key_files
+     and cert_chain_files parameters. It must be at least 1.
+   - It is the caller's responsibility to free this object via
+     grpc_ssl_server_certificate_config_destroy(). */
+GRPCAPI grpc_ssl_server_certificate_config*
+grpc_ssl_server_certificate_config_create(
+    const char* pem_root_certs,
+    const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs);
+
+/** Destroys a grpc_ssl_server_certificate_config object. */
+GRPCAPI void grpc_ssl_server_certificate_config_destroy(
+    grpc_ssl_server_certificate_config* config);
+
+/** Callback to retrieve updated SSL server certificates, private keys, and
+   trusted CAs (for client authentication).
+    - user_data parameter, if not NULL, contains opaque data to be used by the
+      callback.
+    - Use grpc_ssl_server_certificate_config_create to create the config.
+    - The caller assumes ownership of the config. */
+typedef grpc_ssl_certificate_config_reload_status (
+    *grpc_ssl_server_certificate_config_callback)(
+    void* user_data, grpc_ssl_server_certificate_config** config);
+
+/** Deprecated in favor of grpc_ssl_server_credentials_create_ex.
+   Creates an SSL server_credentials object.
+   - pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the client root certificates. This parameter may be NULL if the server does
+     not want the client to be authenticated with SSL.
+   - pem_key_cert_pairs is an array private key / certificate chains of the
+     server. This parameter cannot be NULL.
+   - num_key_cert_pairs indicates the number of items in the private_key_files
+     and cert_chain_files parameters. It should be at least 1.
+   - force_client_auth, if set to non-zero will force the client to authenticate
+     with an SSL cert. Note that this option is ignored if pem_root_certs is
+     NULL. */
+GRPCAPI grpc_server_credentials* grpc_ssl_server_credentials_create(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, int force_client_auth, void* reserved);
+
+/** Deprecated in favor of grpc_ssl_server_credentials_create_with_options.
+   Same as grpc_ssl_server_credentials_create method except uses
+   grpc_ssl_client_certificate_request_type enum to support more ways to
+   authenticate client certificates.*/
+GRPCAPI grpc_server_credentials* grpc_ssl_server_credentials_create_ex(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs,
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    void* reserved);
+
+typedef struct grpc_ssl_server_credentials_options
+    grpc_ssl_server_credentials_options;
+
+/** Creates an options object using a certificate config. Use this method when
+   the certificates and keys of the SSL server will not change during the
+   server's lifetime.
+   - Takes ownership of the certificate_config parameter. */
+GRPCAPI grpc_ssl_server_credentials_options*
+grpc_ssl_server_credentials_create_options_using_config(
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    grpc_ssl_server_certificate_config* certificate_config);
+
+/** Creates an options object using a certificate config fetcher. Use this
+   method to reload the certificates and keys of the SSL server without
+   interrupting the operation of the server. Initial certificate config will be
+   fetched during server initialization.
+   - user_data parameter, if not NULL, contains opaque data which will be passed
+     to the fetcher (see definition of
+     grpc_ssl_server_certificate_config_callback). */
+GRPCAPI grpc_ssl_server_credentials_options*
+grpc_ssl_server_credentials_create_options_using_config_fetcher(
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    grpc_ssl_server_certificate_config_callback cb, void* user_data);
+
+/** Destroys a grpc_ssl_server_credentials_options object. */
+GRPCAPI void grpc_ssl_server_credentials_options_destroy(
+    grpc_ssl_server_credentials_options* options);
+
+/** Creates an SSL server_credentials object using the provided options struct.
+    - Takes ownership of the options parameter. */
+GRPCAPI grpc_server_credentials*
+grpc_ssl_server_credentials_create_with_options(
+    grpc_ssl_server_credentials_options* options);
+
+/** --- Server-side secure ports. --- */
+
+/** Add a HTTP2 over an encrypted link over tcp listener.
+   Returns bound port number on success, 0 on failure.
+   REQUIRES: server not started */
+GRPCAPI int grpc_server_add_secure_http2_port(grpc_server* server,
+                                              const char* addr,
+                                              grpc_server_credentials* creds);
+
+/** --- Call specific credentials. --- */
+
+/** Sets a credentials to a call. Can only be called on the client side before
+   grpc_call_start_batch. */
+GRPCAPI grpc_call_error grpc_call_set_credentials(grpc_call* call,
+                                                  grpc_call_credentials* creds);
+
+/** --- Auth Metadata Processing --- */
+
+/** Callback function that is called when the metadata processing is done.
+   - Consumed metadata will be removed from the set of metadata available on the
+     call. consumed_md may be NULL if no metadata has been consumed.
+   - Response metadata will be set on the response. response_md may be NULL.
+   - status is GRPC_STATUS_OK for success or a specific status for an error.
+     Common error status for auth metadata processing is either
+     GRPC_STATUS_UNAUTHENTICATED in case of an authentication failure or
+     GRPC_STATUS PERMISSION_DENIED in case of an authorization failure.
+   - error_details gives details about the error. May be NULL. */
+typedef void (*grpc_process_auth_metadata_done_cb)(
+    void* user_data, const grpc_metadata* consumed_md, size_t num_consumed_md,
+    const grpc_metadata* response_md, size_t num_response_md,
+    grpc_status_code status, const char* error_details);
+
+/** Pluggable server-side metadata processor object. */
+typedef struct {
+  /** The context object is read/write: it contains the properties of the
+     channel peer and it is the job of the process function to augment it with
+     properties derived from the passed-in metadata.
+     The lifetime of these objects is guaranteed until cb is invoked. */
+  void (*process)(void* state, grpc_auth_context* context,
+                  const grpc_metadata* md, size_t num_md,
+                  grpc_process_auth_metadata_done_cb cb, void* user_data);
+  void (*destroy)(void* state);
+  void* state;
+} grpc_auth_metadata_processor;
+
+GRPCAPI void grpc_server_credentials_set_auth_metadata_processor(
+    grpc_server_credentials* creds, grpc_auth_metadata_processor processor);
+
+/** --- ALTS channel/server credentials --- **/
+
+/**
+ * Main interface for ALTS credentials options. The options will contain
+ * information that will be passed from grpc to TSI layer such as RPC protocol
+ * versions. ALTS client (channel) and server credentials will have their own
+ * implementation of this interface. The APIs listed in this header are
+ * thread-compatible. It is used for experimental purpose for now and subject
+ * to change.
+ */
+typedef struct grpc_alts_credentials_options grpc_alts_credentials_options;
+
+/**
+ * This method creates a grpc ALTS credentials client options instance.
+ * It is used for experimental purpose for now and subject to change.
+ */
+GRPCAPI grpc_alts_credentials_options*
+grpc_alts_credentials_client_options_create(void);
+
+/**
+ * This method creates a grpc ALTS credentials server options instance.
+ * It is used for experimental purpose for now and subject to change.
+ */
+GRPCAPI grpc_alts_credentials_options*
+grpc_alts_credentials_server_options_create(void);
+
+/**
+ * This method adds a target service account to grpc client's ALTS credentials
+ * options instance. It is used for experimental purpose for now and subject
+ * to change.
+ *
+ * - options: grpc ALTS credentials options instance.
+ * - service_account: service account of target endpoint.
+ */
+GRPCAPI void grpc_alts_credentials_client_options_add_target_service_account(
+    grpc_alts_credentials_options* options, const char* service_account);
+
+/**
+ * This method destroys a grpc_alts_credentials_options instance by
+ * de-allocating all of its occupied memory. It is used for experimental purpose
+ * for now and subject to change.
+ *
+ * - options: a grpc_alts_credentials_options instance that needs to be
+ *   destroyed.
+ */
+GRPCAPI void grpc_alts_credentials_options_destroy(
+    grpc_alts_credentials_options* options);
+
+/**
+ * This method creates an ALTS channel credential object. The security
+ * level of the resulting connection is GRPC_PRIVACY_AND_INTEGRITY.
+ * It is used for experimental purpose for now and subject to change.
+ *
+ * - options: grpc ALTS credentials options instance for client.
+ *
+ * It returns the created ALTS channel credential object.
+ */
+GRPCAPI grpc_channel_credentials* grpc_alts_credentials_create(
+    const grpc_alts_credentials_options* options);
+
+/**
+ * This method creates an ALTS server credential object. It is used for
+ * experimental purpose for now and subject to change.
+ *
+ * - options: grpc ALTS credentials options instance for server.
+ *
+ * It returns the created ALTS server credential object.
+ */
+GRPCAPI grpc_server_credentials* grpc_alts_server_credentials_create(
+    const grpc_alts_credentials_options* options);
+
+/** --- Local channel/server credentials --- **/
+
+/**
+ * This method creates a local channel credential object. The security level
+ * of the resulting connection is GRPC_PRIVACY_AND_INTEGRITY for UDS and
+ * GRPC_SECURITY_NONE for LOCAL_TCP. It is used for experimental purpose
+ * for now and subject to change.
+ *
+ * - type: local connection type
+ *
+ * It returns the created local channel credential object.
+ */
+GRPCAPI grpc_channel_credentials* grpc_local_credentials_create(
+    grpc_local_connect_type type);
+
+/**
+ * This method creates a local server credential object. It is used for
+ * experimental purpose for now and subject to change.
+ *
+ * - type: local connection type
+ *
+ * It returns the created local server credential object.
+ */
+GRPCAPI grpc_server_credentials* grpc_local_server_credentials_create(
+    grpc_local_connect_type type);
+
+/** --- TLS channel/server credentials ---
+ * It is used for experimental purpose for now and subject to change. */
+
+/** Config for TLS key materials. It is used for
+ *  experimental purpose for now and subject to change. */
+typedef struct grpc_tls_key_materials_config grpc_tls_key_materials_config;
+
+/** Config for TLS credential reload. It is used for
+ *  experimental purpose for now and subject to change. */
+typedef struct grpc_tls_credential_reload_config
+    grpc_tls_credential_reload_config;
+
+/** Config for TLS server authorization check. It is used for
+ *  experimental purpose for now and subject to change. */
+typedef struct grpc_tls_server_authorization_check_config
+    grpc_tls_server_authorization_check_config;
+
+/** TLS credentials options. It is used for
+ *  experimental purpose for now and subject to change. */
+typedef struct grpc_tls_credentials_options grpc_tls_credentials_options;
+
+/** Create an empty TLS credentials options. It is used for
+ *  experimental purpose for now and subject to change. */
+GRPCAPI grpc_tls_credentials_options* grpc_tls_credentials_options_create(void);
+
+/** Set grpc_ssl_client_certificate_request_type field in credentials options
+    with the provided type. options should not be NULL.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change. */
+GRPCAPI int grpc_tls_credentials_options_set_cert_request_type(
+    grpc_tls_credentials_options* options,
+    grpc_ssl_client_certificate_request_type type);
+
+/** Set grpc_tls_server_verification_option field in credentials options
+    with the provided server_verification_option. options should not be NULL.
+    This should be called only on the client side.
+    If grpc_tls_server_verification_option is not
+    GRPC_TLS_SERVER_VERIFICATION, use of a customer server
+    authorization check (grpc_tls_server_authorization_check_config)
+    will be mandatory.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change. */
+GRPCAPI int grpc_tls_credentials_options_set_server_verification_option(
+    grpc_tls_credentials_options* options,
+    grpc_tls_server_verification_option server_verification_option);
+
+/** Set grpc_tls_key_materials_config field in credentials options
+    with the provided config struct whose ownership is transferred.
+    Both parameters should not be NULL.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change. */
+GRPCAPI int grpc_tls_credentials_options_set_key_materials_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_key_materials_config* config);
+
+/** Set grpc_tls_credential_reload_config field in credentials options
+    with the provided config struct whose ownership is transferred.
+    Both parameters should not be NULL.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change. */
+GRPCAPI int grpc_tls_credentials_options_set_credential_reload_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_credential_reload_config* config);
+
+/** Set grpc_tls_server_authorization_check_config field in credentials options
+    with the provided config struct whose ownership is transferred.
+    Both parameters should not be NULL.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change. */
+GRPCAPI int grpc_tls_credentials_options_set_server_authorization_check_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_server_authorization_check_config* config);
+
+/** --- TLS key materials config. ---
+    It is used for experimental purpose for now and subject to change. */
+
+/** Create an empty grpc_tls_key_materials_config instance.
+ *  It is used for experimental purpose for now and subject to change. */
+GRPCAPI grpc_tls_key_materials_config* grpc_tls_key_materials_config_create(
+    void);
+
+/** Set grpc_tls_key_materials_config instance with provided a TLS certificate.
+    config will take the ownership of pem_root_certs and pem_key_cert_pairs.
+    It's valid for the caller to provide nullptr pem_root_certs, in which case
+    the gRPC-provided root cert will be used. pem_key_cert_pairs should not be
+    NULL. It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change.
+ */
+GRPCAPI int grpc_tls_key_materials_config_set_key_materials(
+    grpc_tls_key_materials_config* config, const char* pem_root_certs,
+    const grpc_ssl_pem_key_cert_pair** pem_key_cert_pairs,
+    size_t num_key_cert_pairs);
+
+/** Set grpc_tls_key_materials_config instance with a provided version number,
+    which is used to keep track of the version of key materials.
+    It returns 1 on success and 0 on failure. It is used for
+    experimental purpose for now and subject to change.
+ */
+GRPCAPI int grpc_tls_key_materials_config_set_version(
+    grpc_tls_key_materials_config* config, int version);
+
+/** Get the version number of a grpc_tls_key_materials_config instance.
+    It returns the version number on success and -1 on failure.
+    It is used for experimental purpose for now and subject to change.
+ */
+GRPCAPI int grpc_tls_key_materials_config_get_version(
+    grpc_tls_key_materials_config* config);
+
+/** --- TLS credential reload config. ---
+    It is used for experimental purpose for now and subject to change.*/
+
+typedef struct grpc_tls_credential_reload_arg grpc_tls_credential_reload_arg;
+
+/** A callback function provided by gRPC to handle the result of credential
+    reload. It is used when schedule API is implemented asynchronously and
+    serves to bring the control back to grpc C core. It is used for
+    experimental purpose for now and subject to change. */
+typedef void (*grpc_tls_on_credential_reload_done_cb)(
+    grpc_tls_credential_reload_arg* arg);
+
+/** A struct containing all information necessary to schedule/cancel a
+    credential reload request.
+    - cb and cb_user_data represent a gRPC-provided
+      callback and an argument passed to it.
+    - key_materials_config is an in/output parameter containing currently
+      used/newly reloaded credentials. If credential reload does not result
+      in a new credential, key_materials_config should not be modified.
+    - status and error_details are used to hold information about
+      errors occurred when a credential reload request is scheduled/cancelled.
+    - config is a pointer to the unique grpc_tls_credential_reload_config
+      instance that this argument corresponds to.
+    - context is a pointer to a wrapped language implementation of this
+      grpc_tls_credential_reload_arg instance.
+    - destroy_context is a pointer to a caller-provided method that cleans
+      up any data associated with the context pointer.
+    It is used for experimental purposes for now and subject to change.
+*/
+struct grpc_tls_credential_reload_arg {
+  grpc_tls_on_credential_reload_done_cb cb;
+  void* cb_user_data;
+  grpc_tls_key_materials_config* key_materials_config;
+  grpc_ssl_certificate_config_reload_status status;
+  const char* error_details;
+  grpc_tls_credential_reload_config* config;
+  void* context;
+  void (*destroy_context)(void* ctx);
+};
+
+/** Create a grpc_tls_credential_reload_config instance.
+    - config_user_data is config-specific, read-only user data
+      that works for all channels created with a credential using the config.
+    - schedule is a pointer to an application-provided callback used to invoke
+      credential reload API. The implementation of this method has to be
+      non-blocking, but can be performed synchronously or asynchronously.
+      1) If processing occurs synchronously, it populates arg->key_materials,
+      arg->status, and arg->error_details and returns zero.
+      2) If processing occurs asynchronously, it returns a non-zero value.
+      The application then invokes arg->cb when processing is completed. Note
+      that arg->cb cannot be invoked before schedule API returns.
+    - cancel is a pointer to an application-provided callback used to cancel
+      a credential reload request scheduled via an asynchronous schedule API.
+      arg is used to pinpoint an exact reloading request to be cancelled.
+      The operation may not have any effect if the request has already been
+      processed.
+    - destruct is a pointer to an application-provided callback used to clean up
+      any data associated with the config.
+    It is used for experimental purpose for now and subject to change.
+*/
+GRPCAPI grpc_tls_credential_reload_config*
+grpc_tls_credential_reload_config_create(
+    const void* config_user_data,
+    int (*schedule)(void* config_user_data,
+                    grpc_tls_credential_reload_arg* arg),
+    void (*cancel)(void* config_user_data, grpc_tls_credential_reload_arg* arg),
+    void (*destruct)(void* config_user_data));
+
+/** --- TLS server authorization check config. ---
+ *  It is used for experimental purpose for now and subject to change. */
+
+typedef struct grpc_tls_server_authorization_check_arg
+    grpc_tls_server_authorization_check_arg;
+
+/** callback function provided by gRPC used to handle the result of server
+    authorization check. It is used when schedule API is implemented
+    asynchronously, and serves to bring the control back to gRPC C core. It is
+    used for experimental purpose for now and subject to change. */
+typedef void (*grpc_tls_on_server_authorization_check_done_cb)(
+    grpc_tls_server_authorization_check_arg* arg);
+
+/** A struct containing all information necessary to schedule/cancel a server
+    authorization check request.
+    - cb and cb_user_data represent a gRPC-provided callback and an argument
+      passed to it.
+    - success will store the result of server authorization check. That is,
+      if success returns a non-zero value, it means the authorization check
+      passes and if returning zero, it means the check fails.
+   - target_name is the name of an endpoint the channel is connecting to.
+   - peer_cert represents a complete certificate chain including both
+     signing and leaf certificates.
+   - status and error_details contain information
+     about errors occurred when a server authorization check request is
+     scheduled/cancelled.
+   - config is a pointer to the unique
+     grpc_tls_server_authorization_check_config instance that this argument
+     corresponds to.
+   - context is a pointer to a wrapped language implementation of this
+     grpc_tls_server_authorization_check_arg instance.
+   - destroy_context is a pointer to a caller-provided method that cleans
+      up any data associated with the context pointer.
+   It is used for experimental purpose for now and subject to change.
+*/
+struct grpc_tls_server_authorization_check_arg {
+  grpc_tls_on_server_authorization_check_done_cb cb;
+  void* cb_user_data;
+  int success;
+  const char* target_name;
+  const char* peer_cert;
+  const char* peer_cert_full_chain;
+  grpc_status_code status;
+  const char* error_details;
+  grpc_tls_server_authorization_check_config* config;
+  void* context;
+  void (*destroy_context)(void* ctx);
+};
+
+/** Create a grpc_tls_server_authorization_check_config instance.
+    - config_user_data is config-specific, read-only user data
+      that works for all channels created with a credential using the config.
+    - schedule is a pointer to an application-provided callback used to invoke
+      server authorization check API. The implementation of this method has to
+      be non-blocking, but can be performed synchronously or asynchronously.
+      1)If processing occurs synchronously, it populates arg->result,
+      arg->status, and arg->error_details and returns zero.
+      2) If processing occurs asynchronously, it returns a non-zero value. The
+      application then invokes arg->cb when processing is completed. Note that
+      arg->cb cannot be invoked before schedule API returns.
+    - cancel is a pointer to an application-provided callback used to cancel a
+      server authorization check request scheduled via an asynchronous schedule
+      API. arg is used to pinpoint an exact check request to be cancelled. The
+      operation may not have any effect if the request has already been
+      processed.
+    - destruct is a pointer to an application-provided callback used to clean up
+      any data associated with the config.
+    It is used for experimental purpose for now and subject to change.
+*/
+GRPCAPI grpc_tls_server_authorization_check_config*
+grpc_tls_server_authorization_check_config_create(
+    const void* config_user_data,
+    int (*schedule)(void* config_user_data,
+                    grpc_tls_server_authorization_check_arg* arg),
+    void (*cancel)(void* config_user_data,
+                   grpc_tls_server_authorization_check_arg* arg),
+    void (*destruct)(void* config_user_data));
+
+/**
+ * This method creates a TLS channel credential object.
+ * It takes ownership of the options parameter. The security level
+ * of the resulting connection is GRPC_PRIVACY_AND_INTEGRITY.
+ *
+ * - options: grpc TLS credentials options instance.
+ *
+ * It returns the created credential object.
+ *
+ * It is used for experimental purpose for now and subject
+ * to change.
+ */
+
+grpc_channel_credentials* grpc_tls_credentials_create(
+    grpc_tls_credentials_options* options);
+
+/**
+ * This method creates a TLS server credential object.
+ * It takes ownership of the options parameter.
+ *
+ * - options: grpc TLS credentials options instance.
+ *
+ * It returns the created credential object.
+ *
+ * It is used for experimental purpose for now and subject
+ * to change.
+ */
+grpc_server_credentials* grpc_tls_server_credentials_create(
+    grpc_tls_credentials_options* options);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security_constants.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security_constants.h
new file mode 100644
index 0000000..053b2da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/grpc_security_constants.h	
@@ -0,0 +1,145 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_GRPC_SECURITY_CONSTANTS_H
+#define GRPC_GRPC_SECURITY_CONSTANTS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME "transport_security_type"
+#define GRPC_SSL_TRANSPORT_SECURITY_TYPE "ssl"
+
+#define GRPC_X509_CN_PROPERTY_NAME "x509_common_name"
+#define GRPC_X509_SAN_PROPERTY_NAME "x509_subject_alternative_name"
+#define GRPC_X509_PEM_CERT_PROPERTY_NAME "x509_pem_cert"
+#define GRPC_X509_PEM_CERT_CHAIN_PROPERTY_NAME "x509_pem_cert_chain"
+#define GRPC_SSL_SESSION_REUSED_PROPERTY "ssl_session_reused"
+#define GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME "security_level"
+
+/** Environment variable that points to the default SSL roots file. This file
+   must be a PEM encoded file with all the roots such as the one that can be
+   downloaded from https://pki.google.com/roots.pem.  */
+#define GRPC_DEFAULT_SSL_ROOTS_FILE_PATH_ENV_VAR \
+  "GRPC_DEFAULT_SSL_ROOTS_FILE_PATH"
+
+/** Environment variable that points to the google default application
+   credentials json key or refresh token. Used in the
+   grpc_google_default_credentials_create function. */
+#define GRPC_GOOGLE_CREDENTIALS_ENV_VAR "GOOGLE_APPLICATION_CREDENTIALS"
+
+/** Results for the SSL roots override callback. */
+typedef enum {
+  GRPC_SSL_ROOTS_OVERRIDE_OK,
+  GRPC_SSL_ROOTS_OVERRIDE_FAIL_PERMANENTLY, /** Do not try fallback options. */
+  GRPC_SSL_ROOTS_OVERRIDE_FAIL
+} grpc_ssl_roots_override_result;
+
+/** Callback results for dynamically loading a SSL certificate config. */
+typedef enum {
+  GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED,
+  GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_NEW,
+  GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL
+} grpc_ssl_certificate_config_reload_status;
+
+typedef enum {
+  /** Server does not request client certificate.
+     The certificate presented by the client is not checked by the server at
+     all. (A client may present a self signed or signed certificate or not
+     present a certificate at all and any of those option would be accepted) */
+  GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE,
+  /** Server requests client certificate but does not enforce that the client
+     presents a certificate.
+
+     If the client presents a certificate, the client authentication is left to
+     the application (the necessary metadata will be available to the
+     application via authentication context properties, see grpc_auth_context).
+
+     The client's key certificate pair must be valid for the SSL connection to
+     be established. */
+  GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  /** Server requests client certificate but does not enforce that the client
+     presents a certificate.
+
+     If the client presents a certificate, the client authentication is done by
+     the gRPC framework. (For a successful connection the client needs to either
+     present a certificate that can be verified against the root certificate
+     configured by the server or not present a certificate at all)
+
+     The client's key certificate pair must be valid for the SSL connection to
+     be established. */
+  GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY,
+  /** Server requests client certificate and enforces that the client presents a
+     certificate.
+
+     If the client presents a certificate, the client authentication is left to
+     the application (the necessary metadata will be available to the
+     application via authentication context properties, see grpc_auth_context).
+
+     The client's key certificate pair must be valid for the SSL connection to
+     be established. */
+  GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  /** Server requests client certificate and enforces that the client presents a
+     certificate.
+
+     The certificate presented by the client is verified by the gRPC framework.
+     (For a successful connection the client needs to present a certificate that
+     can be verified against the root certificate configured by the server)
+
+     The client's key certificate pair must be valid for the SSL connection to
+     be established. */
+  GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
+} grpc_ssl_client_certificate_request_type;
+
+/* Security levels of grpc transport security. It represents an inherent
+ * property of a backend connection and is determined by a channel credential
+ * used to create the connection. */
+typedef enum {
+  GRPC_SECURITY_MIN,
+  GRPC_SECURITY_NONE = GRPC_SECURITY_MIN,
+  GRPC_INTEGRITY_ONLY,
+  GRPC_PRIVACY_AND_INTEGRITY,
+  GRPC_SECURITY_MAX = GRPC_PRIVACY_AND_INTEGRITY,
+} grpc_security_level;
+
+typedef enum {
+  /** Default option: performs server certificate verification and hostname
+     verification. */
+  GRPC_TLS_SERVER_VERIFICATION,
+  /** Performs server certificate verification, but skips hostname verification
+     Client is responsible for verifying server's identity via
+     server authorization check callback. */
+  GRPC_TLS_SKIP_HOSTNAME_VERIFICATION,
+  /** Skips both server certificate and hostname verification.
+     Client is responsible for verifying server's identity and
+     server's certificate via server authorization check callback. */
+  GRPC_TLS_SKIP_ALL_SERVER_VERIFICATION
+} grpc_tls_server_verification_option;
+
+/**
+ * Type of local connections for which local channel/server credentials will be
+ * applied. It supports UDS and local TCP connections.
+ */
+typedef enum { UDS = 0, LOCAL_TCP } grpc_local_connect_type;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_SECURITY_CONSTANTS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm.h
new file mode 100644
index 0000000..00d83f0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm.h	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_H
+#define GRPC_IMPL_CODEGEN_ATM_H
+
+/** This interface provides atomic operations and barriers.
+   It is internal to gpr support code and should not be used outside it.
+
+   If an operation with acquire semantics precedes another memory access by the
+   same thread, the operation will precede that other access as seen by other
+   threads.
+
+   If an operation with release semantics follows another memory access by the
+   same thread, the operation will follow that other access as seen by other
+   threads.
+
+   Routines with "acq" or "full" in the name have acquire semantics.  Routines
+   with "rel" or "full" in the name have release semantics.  Routines with
+   "no_barrier" in the name have neither acquire not release semantics.
+
+   The routines may be implemented as macros.
+
+   // Atomic operations act on an intergral_type gpr_atm that is guaranteed to
+   // be the same size as a pointer.
+   typedef intptr_t gpr_atm;
+
+   // A memory barrier, providing both acquire and release semantics, but not
+   // otherwise acting on memory.
+   void gpr_atm_full_barrier(void);
+
+   // Atomically return *p, with acquire semantics.
+   gpr_atm gpr_atm_acq_load(gpr_atm *p);
+   gpr_atm gpr_atm_no_barrier_load(gpr_atm *p);
+
+   // Atomically set *p = value, with release semantics.
+   void gpr_atm_rel_store(gpr_atm *p, gpr_atm value);
+
+   // Atomically add delta to *p, and return the old value of *p, with
+   // the barriers specified.
+   gpr_atm gpr_atm_no_barrier_fetch_add(gpr_atm *p, gpr_atm delta);
+   gpr_atm gpr_atm_full_fetch_add(gpr_atm *p, gpr_atm delta);
+
+   // Atomically, if *p==o, set *p=n and return non-zero otherwise return 0,
+   // with the barriers specified if the operation succeeds.
+   int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
+   int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
+   int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
+   int gpr_atm_full_cas(gpr_atm *p, gpr_atm o, gpr_atm n);
+
+   // Atomically, set *p=n and return the old value of *p
+   gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n);
+*/
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#if defined(GPR_GCC_ATOMIC)
+#include <grpc/impl/codegen/atm_gcc_atomic.h>
+#elif defined(GPR_GCC_SYNC)
+#include <grpc/impl/codegen/atm_gcc_sync.h>
+#elif defined(GPR_WINDOWS_ATOMIC)
+#include <grpc/impl/codegen/atm_windows.h>
+#else
+#error could not determine platform for atm
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Adds \a delta to \a *value, clamping the result to the range specified
+    by \a min and \a max.  Returns the new value. */
+gpr_atm gpr_atm_no_barrier_clamped_add(gpr_atm* value, gpr_atm delta,
+                                       gpr_atm min, gpr_atm max);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_atomic.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_atomic.h
new file mode 100644
index 0000000..5879708
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_atomic.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
+#define GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
+
+/* atm_platform.h for gcc and gcc-like compilers with the
+   __atomic_* interface.  */
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef intptr_t gpr_atm;
+#define GPR_ATM_MAX INTPTR_MAX
+#define GPR_ATM_MIN INTPTR_MIN
+
+#ifdef GPR_LOW_LEVEL_COUNTERS
+extern gpr_atm gpr_counter_atm_cas;
+extern gpr_atm gpr_counter_atm_add;
+#define GPR_ATM_INC_COUNTER(counter) \
+  __atomic_fetch_add(&counter, 1, __ATOMIC_RELAXED)
+#define GPR_ATM_INC_CAS_THEN(blah) \
+  (GPR_ATM_INC_COUNTER(gpr_counter_atm_cas), blah)
+#define GPR_ATM_INC_ADD_THEN(blah) \
+  (GPR_ATM_INC_COUNTER(gpr_counter_atm_add), blah)
+#else
+#define GPR_ATM_INC_CAS_THEN(blah) blah
+#define GPR_ATM_INC_ADD_THEN(blah) blah
+#endif
+
+#define gpr_atm_full_barrier() (__atomic_thread_fence(__ATOMIC_SEQ_CST))
+
+#define gpr_atm_acq_load(p) (__atomic_load_n((p), __ATOMIC_ACQUIRE))
+#define gpr_atm_no_barrier_load(p) (__atomic_load_n((p), __ATOMIC_RELAXED))
+#define gpr_atm_rel_store(p, value) \
+  (__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELEASE))
+#define gpr_atm_no_barrier_store(p, value) \
+  (__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELAXED))
+
+#define gpr_atm_no_barrier_fetch_add(p, delta) \
+  GPR_ATM_INC_ADD_THEN(                        \
+      __atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_RELAXED))
+#define gpr_atm_full_fetch_add(p, delta) \
+  GPR_ATM_INC_ADD_THEN(                  \
+      __atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_ACQ_REL))
+
+static __inline int gpr_atm_no_barrier_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+  return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
+      p, &o, n, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED));
+}
+
+static __inline int gpr_atm_acq_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+  return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
+      p, &o, n, 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED));
+}
+
+static __inline int gpr_atm_rel_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+  return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
+      p, &o, n, 0, __ATOMIC_RELEASE, __ATOMIC_RELAXED));
+}
+
+static __inline int gpr_atm_full_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+  return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
+      p, &o, n, 0, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED));
+}
+
+#define gpr_atm_full_xchg(p, n) \
+  GPR_ATM_INC_CAS_THEN(__atomic_exchange_n((p), (n), __ATOMIC_ACQ_REL))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_sync.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_sync.h
new file mode 100644
index 0000000..728c3d5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_sync.h	
@@ -0,0 +1,85 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
+#define GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
+
+/* variant of atm_platform.h for gcc and gcc-like compiers with __sync_*
+   interface */
+#include <grpc/impl/codegen/port_platform.h>
+
+typedef intptr_t gpr_atm;
+#define GPR_ATM_MAX INTPTR_MAX
+#define GPR_ATM_MIN INTPTR_MIN
+#define GPR_ATM_INC_CAS_THEN(blah) blah
+#define GPR_ATM_INC_ADD_THEN(blah) blah
+
+#define GPR_ATM_COMPILE_BARRIER_() __asm__ __volatile__("" : : : "memory")
+
+#if defined(__i386) || defined(__x86_64__)
+/* All loads are acquire loads and all stores are release stores.  */
+#define GPR_ATM_LS_BARRIER_() GPR_ATM_COMPILE_BARRIER_()
+#else
+#define GPR_ATM_LS_BARRIER_() gpr_atm_full_barrier()
+#endif
+
+#define gpr_atm_full_barrier() (__sync_synchronize())
+
+static __inline gpr_atm gpr_atm_acq_load(const gpr_atm* p) {
+  gpr_atm value = *p;
+  GPR_ATM_LS_BARRIER_();
+  return value;
+}
+
+static __inline gpr_atm gpr_atm_no_barrier_load(const gpr_atm* p) {
+  gpr_atm value = *p;
+  GPR_ATM_COMPILE_BARRIER_();
+  return value;
+}
+
+static __inline void gpr_atm_rel_store(gpr_atm* p, gpr_atm value) {
+  GPR_ATM_LS_BARRIER_();
+  *p = value;
+}
+
+static __inline void gpr_atm_no_barrier_store(gpr_atm* p, gpr_atm value) {
+  GPR_ATM_COMPILE_BARRIER_();
+  *p = value;
+}
+
+#undef GPR_ATM_LS_BARRIER_
+#undef GPR_ATM_COMPILE_BARRIER_
+
+#define gpr_atm_no_barrier_fetch_add(p, delta) \
+  gpr_atm_full_fetch_add((p), (delta))
+#define gpr_atm_full_fetch_add(p, delta) (__sync_fetch_and_add((p), (delta)))
+
+#define gpr_atm_no_barrier_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
+#define gpr_atm_acq_cas(p, o, n) (__sync_bool_compare_and_swap((p), (o), (n)))
+#define gpr_atm_rel_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
+#define gpr_atm_full_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
+
+static __inline gpr_atm gpr_atm_full_xchg(gpr_atm* p, gpr_atm n) {
+  gpr_atm cur;
+  do {
+    cur = gpr_atm_acq_load(p);
+  } while (!gpr_atm_rel_cas(p, cur, n));
+  return cur;
+}
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_windows.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_windows.h
new file mode 100644
index 0000000..c016b90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/atm_windows.h	
@@ -0,0 +1,128 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
+#define GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
+
+/** Win32 variant of atm_platform.h */
+#include <grpc/impl/codegen/port_platform.h>
+
+typedef intptr_t gpr_atm;
+#define GPR_ATM_MAX INTPTR_MAX
+#define GPR_ATM_MIN INTPTR_MIN
+#define GPR_ATM_INC_CAS_THEN(blah) blah
+#define GPR_ATM_INC_ADD_THEN(blah) blah
+
+#define gpr_atm_full_barrier MemoryBarrier
+
+static __inline gpr_atm gpr_atm_acq_load(const gpr_atm* p) {
+  gpr_atm result = *p;
+  gpr_atm_full_barrier();
+  return result;
+}
+
+static __inline gpr_atm gpr_atm_no_barrier_load(const gpr_atm* p) {
+  /* TODO(dklempner): Can we implement something better here? */
+  return gpr_atm_acq_load(p);
+}
+
+static __inline void gpr_atm_rel_store(gpr_atm* p, gpr_atm value) {
+  gpr_atm_full_barrier();
+  *p = value;
+}
+
+static __inline void gpr_atm_no_barrier_store(gpr_atm* p, gpr_atm value) {
+  /* TODO(ctiller): Can we implement something better here? */
+  gpr_atm_rel_store(p, value);
+}
+
+static __inline int gpr_atm_no_barrier_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+/** InterlockedCompareExchangePointerNoFence() not available on vista or
+   windows7 */
+#ifdef GPR_ARCH_64
+  return o == (gpr_atm)InterlockedCompareExchangeAcquire64(
+                  (volatile LONGLONG*)p, (LONGLONG)n, (LONGLONG)o);
+#else
+  return o == (gpr_atm)InterlockedCompareExchangeAcquire((volatile LONG*)p,
+                                                         (LONG)n, (LONG)o);
+#endif
+}
+
+static __inline int gpr_atm_acq_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+#ifdef GPR_ARCH_64
+  return o == (gpr_atm)InterlockedCompareExchangeAcquire64(
+                  (volatile LONGLONG*)p, (LONGLONG)n, (LONGLONG)o);
+#else
+  return o == (gpr_atm)InterlockedCompareExchangeAcquire((volatile LONG*)p,
+                                                         (LONG)n, (LONG)o);
+#endif
+}
+
+static __inline int gpr_atm_rel_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+#ifdef GPR_ARCH_64
+  return o == (gpr_atm)InterlockedCompareExchangeRelease64(
+                  (volatile LONGLONG*)p, (LONGLONG)n, (LONGLONG)o);
+#else
+  return o == (gpr_atm)InterlockedCompareExchangeRelease((volatile LONG*)p,
+                                                         (LONG)n, (LONG)o);
+#endif
+}
+
+static __inline int gpr_atm_full_cas(gpr_atm* p, gpr_atm o, gpr_atm n) {
+#ifdef GPR_ARCH_64
+  return o == (gpr_atm)InterlockedCompareExchange64((volatile LONGLONG*)p,
+                                                    (LONGLONG)n, (LONGLONG)o);
+#else
+  return o == (gpr_atm)InterlockedCompareExchange((volatile LONG*)p, (LONG)n,
+                                                  (LONG)o);
+#endif
+}
+
+static __inline gpr_atm gpr_atm_no_barrier_fetch_add(gpr_atm* p,
+                                                     gpr_atm delta) {
+  /** Use the CAS operation to get pointer-sized fetch and add */
+  gpr_atm old;
+  do {
+    old = *p;
+  } while (!gpr_atm_no_barrier_cas(p, old, old + delta));
+  return old;
+}
+
+static __inline gpr_atm gpr_atm_full_fetch_add(gpr_atm* p, gpr_atm delta) {
+  /** Use a CAS operation to get pointer-sized fetch and add */
+  gpr_atm old;
+#ifdef GPR_ARCH_64
+  do {
+    old = *p;
+  } while (old != (gpr_atm)InterlockedCompareExchange64((volatile LONGLONG*)p,
+                                                        (LONGLONG)old + delta,
+                                                        (LONGLONG)old));
+#else
+  do {
+    old = *p;
+  } while (old != (gpr_atm)InterlockedCompareExchange(
+                      (volatile LONG*)p, (LONG)old + delta, (LONG)old));
+#endif
+  return old;
+}
+
+static __inline gpr_atm gpr_atm_full_xchg(gpr_atm* p, gpr_atm n) {
+  return (gpr_atm)InterlockedExchangePointer((PVOID*)p, (PVOID)n);
+}
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer.h
new file mode 100644
index 0000000..1247906
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer.h	
@@ -0,0 +1,101 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Returns a RAW byte buffer instance over the given slices (up to \a nslices).
+ *
+ * Increases the reference count for all \a slices processed. The user is
+ * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
+GRPCAPI grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slices,
+                                                      size_t nslices);
+
+/** Returns a *compressed* RAW byte buffer instance over the given slices (up to
+ * \a nslices). The \a compression argument defines the compression algorithm
+ * used to generate the data in \a slices.
+ *
+ * Increases the reference count for all \a slices processed. The user is
+ * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
+GRPCAPI grpc_byte_buffer* grpc_raw_compressed_byte_buffer_create(
+    grpc_slice* slices, size_t nslices, grpc_compression_algorithm compression);
+
+/** Copies input byte buffer \a bb.
+ *
+ * Increases the reference count of all the source slices. The user is
+ * responsible for calling grpc_byte_buffer_destroy over the returned copy. */
+GRPCAPI grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb);
+
+/** Returns the size of the given byte buffer, in bytes. */
+GRPCAPI size_t grpc_byte_buffer_length(grpc_byte_buffer* bb);
+
+/** Destroys \a byte_buffer deallocating all its memory. */
+GRPCAPI void grpc_byte_buffer_destroy(grpc_byte_buffer* byte_buffer);
+
+/** Reader for byte buffers. Iterates over slices in the byte buffer */
+struct grpc_byte_buffer_reader;
+typedef struct grpc_byte_buffer_reader grpc_byte_buffer_reader;
+
+/** Initialize \a reader to read over \a buffer.
+ * Returns 1 upon success, 0 otherwise. */
+GRPCAPI int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
+                                         grpc_byte_buffer* buffer);
+
+/** Cleanup and destroy \a reader */
+GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader* reader);
+
+/** Updates \a slice with the next piece of data from from \a reader and returns
+ * 1. Returns 0 at the end of the stream. Caller is responsible for calling
+ * grpc_slice_unref on the result. */
+GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
+                                         grpc_slice* slice);
+
+/** EXPERIMENTAL API - This function may be removed and changed, in the future.
+ *
+ * Updates \a slice with the next piece of data from from \a reader and returns
+ * 1. Returns 0 at the end of the stream. Caller is responsible for making sure
+ * the slice pointer remains valid when accessed.
+ *
+ * NOTE: Do not use this function unless the caller can guarantee that the
+ *       underlying grpc_byte_buffer outlasts the use of the slice. This is only
+ *       safe when the underlying grpc_byte_buffer remains immutable while slice
+ *       is being accessed. */
+GRPCAPI int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
+                                         grpc_slice** slice);
+
+/** Merge all data from \a reader into single slice */
+GRPCAPI grpc_slice
+grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader* reader);
+
+/** Returns a RAW byte buffer instance from the output of \a reader. */
+GRPCAPI grpc_byte_buffer* grpc_raw_byte_buffer_from_reader(
+    grpc_byte_buffer_reader* reader);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer_reader.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer_reader.h
new file mode 100644
index 0000000..e06e195
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer_reader.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
+#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_byte_buffer;
+
+struct grpc_byte_buffer_reader {
+  struct grpc_byte_buffer* buffer_in;
+  struct grpc_byte_buffer* buffer_out;
+  /** Different current objects correspond to different types of byte buffers */
+  union grpc_byte_buffer_reader_current {
+    /** Index into a slice buffer's array of slices */
+    unsigned index;
+  } current;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/compression_types.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/compression_types.h
new file mode 100644
index 0000000..f778b00
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/compression_types.h	
@@ -0,0 +1,108 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H
+#define GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** To be used as initial metadata key for the request of a concrete compression
+ * algorithm */
+#define GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
+  "grpc-internal-encoding-request"
+
+/** To be used in channel arguments.
+ *
+ * \addtogroup grpc_arg_keys
+ * \{ */
+/** Default compression algorithm for the channel.
+ * Its value is an int from the \a grpc_compression_algorithm enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
+  "grpc.default_compression_algorithm"
+/** Default compression level for the channel.
+ * Its value is an int from the \a grpc_compression_level enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL "grpc.default_compression_level"
+/** Compression algorithms supported by the channel.
+ * Its value is a bitset (an int). Bits correspond to algorithms in \a
+ * grpc_compression_algorithm. For example, its LSB corresponds to
+ * GRPC_COMPRESS_NONE, the next bit to GRPC_COMPRESS_DEFLATE, etc.
+ * Unset bits disable support for the algorithm. By default all algorithms are
+ * supported. It's not possible to disable GRPC_COMPRESS_NONE (the attempt will
+ * be ignored). */
+#define GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
+  "grpc.compression_enabled_algorithms_bitset"
+/** \} */
+
+/** The various compression algorithms supported by gRPC (not sorted by
+ * compression level) */
+typedef enum {
+  GRPC_COMPRESS_NONE = 0,
+  GRPC_COMPRESS_DEFLATE,
+  GRPC_COMPRESS_GZIP,
+  /* EXPERIMENTAL: Stream compression is currently experimental. */
+  GRPC_COMPRESS_STREAM_GZIP,
+  /* TODO(ctiller): snappy */
+  GRPC_COMPRESS_ALGORITHMS_COUNT
+} grpc_compression_algorithm;
+
+/** Compression levels allow a party with knowledge of its peer's accepted
+ * encodings to request compression in an abstract way. The level-algorithm
+ * mapping is performed internally and depends on the peer's supported
+ * compression algorithms. */
+typedef enum {
+  GRPC_COMPRESS_LEVEL_NONE = 0,
+  GRPC_COMPRESS_LEVEL_LOW,
+  GRPC_COMPRESS_LEVEL_MED,
+  GRPC_COMPRESS_LEVEL_HIGH,
+  GRPC_COMPRESS_LEVEL_COUNT
+} grpc_compression_level;
+
+typedef struct grpc_compression_options {
+  /** All algs are enabled by default. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET
+   */
+  uint32_t enabled_algorithms_bitset;
+
+  /** The default compression level. It'll be used in the absence of call
+   * specific settings. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL. If present,
+   * takes precedence over \a default_algorithm.
+   * TODO(dgq): currently only available for server channels. */
+  struct grpc_compression_options_default_level {
+    int is_set;
+    grpc_compression_level level;
+  } default_level;
+
+  /** The default message compression algorithm. It'll be used in the absence of
+   * call specific settings. This option corresponds to the channel argument key
+   * behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM. */
+  struct grpc_compression_options_default_algorithm {
+    int is_set;
+    grpc_compression_algorithm algorithm;
+  } default_algorithm;
+} grpc_compression_options;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/connectivity_state.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/connectivity_state.h
new file mode 100644
index 0000000..b70dbef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/connectivity_state.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H
+#define GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Connectivity state of a channel. */
+typedef enum {
+  /** channel is idle */
+  GRPC_CHANNEL_IDLE,
+  /** channel is connecting */
+  GRPC_CHANNEL_CONNECTING,
+  /** channel is ready for work */
+  GRPC_CHANNEL_READY,
+  /** channel has seen a failure but expects to recover */
+  GRPC_CHANNEL_TRANSIENT_FAILURE,
+  /** channel has seen a failure that it cannot recover from */
+  GRPC_CHANNEL_SHUTDOWN
+} grpc_connectivity_state;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/fork.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/fork.h
new file mode 100644
index 0000000..555df34
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/fork.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_FORK_H
+#define GRPC_IMPL_CODEGEN_FORK_H
+
+/**
+ * gRPC applications should call this before calling fork().  There should be no
+ * active gRPC function calls between calling grpc_prefork() and
+ * grpc_postfork_parent()/grpc_postfork_child().
+ *
+ *
+ * Typical use:
+ * grpc_prefork();
+ * int pid = fork();
+ * if (pid) {
+ *  grpc_postfork_parent();
+ *  // Parent process..
+ * } else {
+ *  grpc_postfork_child();
+ *  // Child process...
+ * }
+ */
+
+void grpc_prefork(void);
+
+void grpc_postfork_parent(void);
+
+void grpc_postfork_child(void);
+
+void grpc_fork_handlers_auto_register(void);
+
+#endif /* GRPC_IMPL_CODEGEN_FORK_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_slice.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_slice.h
new file mode 100644
index 0000000..89fa72d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_slice.h	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPC_IMPL_CODEGEN_GPR_SLICE_H
+#define GRPC_IMPL_CODEGEN_GPR_SLICE_H
+
+/** WARNING: Please do not use this header. This was added as a temporary
+ * measure to not break some of the external projects that depend on
+ * gpr_slice_* functions. We are actively working on moving all the
+ * gpr_slice_* references to grpc_slice_* and this file will be removed
+ */
+
+/* TODO (sreek) - Allowed by default but will be very soon turned off */
+#define GRPC_ALLOW_GPR_SLICE_FUNCTIONS 1
+
+#ifdef GRPC_ALLOW_GPR_SLICE_FUNCTIONS
+
+#define gpr_slice_refcount grpc_slice_refcount
+#define gpr_slice grpc_slice
+#define gpr_slice_buffer grpc_slice_buffer
+
+#define gpr_slice_ref grpc_slice_ref
+#define gpr_slice_unref grpc_slice_unref
+#define gpr_slice_new grpc_slice_new
+#define gpr_slice_new_with_user_data grpc_slice_new_with_user_data
+#define gpr_slice_new_with_len grpc_slice_new_with_len
+#define gpr_slice_malloc grpc_slice_malloc
+#define gpr_slice_from_copied_string grpc_slice_from_copied_string
+#define gpr_slice_from_copied_buffer grpc_slice_from_copied_buffer
+#define gpr_slice_from_static_string grpc_slice_from_static_string
+#define gpr_slice_sub grpc_slice_sub
+#define gpr_slice_sub_no_ref grpc_slice_sub_no_ref
+#define gpr_slice_split_tail grpc_slice_split_tail
+#define gpr_slice_split_head grpc_slice_split_head
+#define gpr_slice_cmp grpc_slice_cmp
+#define gpr_slice_str_cmp grpc_slice_str_cmp
+
+#define gpr_slice_buffer grpc_slice_buffer
+#define gpr_slice_buffer_init grpc_slice_buffer_init
+#define gpr_slice_buffer_destroy grpc_slice_buffer_destroy
+#define gpr_slice_buffer_add grpc_slice_buffer_add
+#define gpr_slice_buffer_add_indexed grpc_slice_buffer_add_indexed
+#define gpr_slice_buffer_addn grpc_slice_buffer_addn
+#define gpr_slice_buffer_tiny_add grpc_slice_buffer_tiny_add
+#define gpr_slice_buffer_pop grpc_slice_buffer_pop
+#define gpr_slice_buffer_reset_and_unref grpc_slice_buffer_reset_and_unref
+#define gpr_slice_buffer_swap grpc_slice_buffer_swap
+#define gpr_slice_buffer_move_into grpc_slice_buffer_move_into
+#define gpr_slice_buffer_trim_end grpc_slice_buffer_trim_end
+#define gpr_slice_buffer_move_first grpc_slice_buffer_move_first
+#define gpr_slice_buffer_take_first grpc_slice_buffer_take_first
+
+#endif /* GRPC_ALLOW_GPR_SLICE_FUNCTIONS */
+
+#endif /* GRPC_IMPL_CODEGEN_GPR_SLICE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_types.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_types.h
new file mode 100644
index 0000000..6daf339
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/gpr_types.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_GPR_TYPES_H
+#define GRPC_IMPL_CODEGEN_GPR_TYPES_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** The clocks we support. */
+typedef enum {
+  /** Monotonic clock. Epoch undefined. Always moves forwards. */
+  GPR_CLOCK_MONOTONIC = 0,
+  /** Realtime clock. May jump forwards or backwards. Settable by
+     the system administrator. Has its epoch at 0:00:00 UTC 1 Jan 1970. */
+  GPR_CLOCK_REALTIME,
+  /** CPU cycle time obtained by rdtsc instruction on x86 platforms. Epoch
+     undefined. Degrades to GPR_CLOCK_REALTIME on other platforms. */
+  GPR_CLOCK_PRECISE,
+  /** Unmeasurable clock type: no base, created by taking the difference
+     between two times */
+  GPR_TIMESPAN
+} gpr_clock_type;
+
+/** Analogous to struct timespec. On some machines, absolute times may be in
+ * local time. */
+typedef struct gpr_timespec {
+  int64_t tv_sec;
+  int32_t tv_nsec;
+  /** Against which clock was this time measured? (or GPR_TIMESPAN if
+      this is a relative time measure) */
+  gpr_clock_type clock_type;
+} gpr_timespec;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_GPR_TYPES_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/grpc_types.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/grpc_types.h
new file mode 100644
index 0000000..ab4c39f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/grpc_types.h	
@@ -0,0 +1,787 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_GRPC_TYPES_H
+#define GRPC_IMPL_CODEGEN_GRPC_TYPES_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/impl/codegen/status.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  GRPC_BB_RAW
+  /** Future types may include GRPC_BB_PROTOBUF, etc. */
+} grpc_byte_buffer_type;
+
+typedef struct grpc_byte_buffer {
+  void* reserved;
+  grpc_byte_buffer_type type;
+  union grpc_byte_buffer_data {
+    struct /* internal */ {
+      void* reserved[8];
+    } reserved;
+    struct grpc_compressed_buffer {
+      grpc_compression_algorithm compression;
+      grpc_slice_buffer slice_buffer;
+    } raw;
+  } data;
+} grpc_byte_buffer;
+
+/** Completion Queues enable notification of the completion of
+ * asynchronous actions. */
+typedef struct grpc_completion_queue grpc_completion_queue;
+
+/** An alarm associated with a completion queue. */
+typedef struct grpc_alarm grpc_alarm;
+
+/** The Channel interface allows creation of Call objects. */
+typedef struct grpc_channel grpc_channel;
+
+/** A server listens to some port and responds to request calls */
+typedef struct grpc_server grpc_server;
+
+/** A Call represents an RPC. When created, it is in a configuration state
+    allowing properties to be set until it is invoked. After invoke, the Call
+    can have messages written to it and read from it. */
+typedef struct grpc_call grpc_call;
+
+/** The Socket Mutator interface allows changes on socket options */
+typedef struct grpc_socket_mutator grpc_socket_mutator;
+
+/** The Socket Factory interface creates and binds sockets */
+typedef struct grpc_socket_factory grpc_socket_factory;
+
+/** Type specifier for grpc_arg */
+typedef enum {
+  GRPC_ARG_STRING,
+  GRPC_ARG_INTEGER,
+  GRPC_ARG_POINTER
+} grpc_arg_type;
+
+typedef struct grpc_arg_pointer_vtable {
+  void* (*copy)(void* p);
+  void (*destroy)(void* p);
+  int (*cmp)(void* p, void* q);
+} grpc_arg_pointer_vtable;
+
+/** A single argument... each argument has a key and a value
+
+    A note on naming keys:
+      Keys are namespaced into groups, usually grouped by library, and are
+      keys for module XYZ are named XYZ.key1, XYZ.key2, etc. Module names must
+      be restricted to the regex [A-Za-z][_A-Za-z0-9]{,15}.
+      Key names must be restricted to the regex [A-Za-z][_A-Za-z0-9]{,47}.
+
+    GRPC core library keys are prefixed by grpc.
+
+    Library authors are strongly encouraged to \#define symbolic constants for
+    their keys so that it's possible to change them in the future. */
+typedef struct {
+  grpc_arg_type type;
+  char* key;
+  union grpc_arg_value {
+    char* string;
+    int integer;
+    struct grpc_arg_pointer {
+      void* p;
+      const grpc_arg_pointer_vtable* vtable;
+    } pointer;
+  } value;
+} grpc_arg;
+
+/** An array of arguments that can be passed around.
+
+    Used to set optional channel-level configuration.
+    These configuration options are modelled as key-value pairs as defined
+    by grpc_arg; keys are strings to allow easy backwards-compatible extension
+    by arbitrary parties. All evaluation is performed at channel creation
+    time (i.e. the keys and values in this structure need only live through the
+    creation invocation).
+
+    However, if one of the args has grpc_arg_type==GRPC_ARG_POINTER, then the
+    grpc_arg_pointer_vtable must live until the channel args are done being
+    used by core (i.e. when the object for use with which they were passed
+    is destroyed).
+
+    See the description of the \ref grpc_arg_keys "available args" for more
+    details. */
+typedef struct {
+  size_t num_args;
+  grpc_arg* args;
+} grpc_channel_args;
+
+/** \defgroup grpc_arg_keys
+ * Channel argument keys.
+ * \{
+ */
+/** If non-zero, enable census for tracing and stats collection. */
+#define GRPC_ARG_ENABLE_CENSUS "grpc.census"
+/** If non-zero, enable load reporting. */
+#define GRPC_ARG_ENABLE_LOAD_REPORTING "grpc.loadreporting"
+/** Request that optional features default to off (regardless of what they
+    usually default to) - to enable tight control over what gets enabled */
+#define GRPC_ARG_MINIMAL_STACK "grpc.minimal_stack"
+/** Maximum number of concurrent incoming streams to allow on a http2
+    connection. Int valued. */
+#define GRPC_ARG_MAX_CONCURRENT_STREAMS "grpc.max_concurrent_streams"
+/** Maximum message length that the channel can receive. Int valued, bytes.
+    -1 means unlimited. */
+#define GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH "grpc.max_receive_message_length"
+/** \deprecated For backward compatibility.
+ * Use GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH instead. */
+#define GRPC_ARG_MAX_MESSAGE_LENGTH GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH
+/** Maximum message length that the channel can send. Int valued, bytes.
+    -1 means unlimited. */
+#define GRPC_ARG_MAX_SEND_MESSAGE_LENGTH "grpc.max_send_message_length"
+/** Maximum time that a channel may have no outstanding rpcs, after which the
+ * server will close the connection. Int valued, milliseconds. INT_MAX means
+ * unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_IDLE_MS "grpc.max_connection_idle_ms"
+/** Maximum time that a channel may exist. Int valued, milliseconds.
+ * INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_MS "grpc.max_connection_age_ms"
+/** Grace period after the channel reaches its max age. Int valued,
+   milliseconds. INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS "grpc.max_connection_age_grace_ms"
+/** Timeout after the last RPC finishes on the client channel at which the
+ * channel goes back into IDLE state. Int valued, milliseconds. INT_MAX means
+ * unlimited. The default value is 30 minutes and the min value is 1 second. */
+#define GRPC_ARG_CLIENT_IDLE_TIMEOUT_MS "grpc.client_idle_timeout_ms"
+/** Enable/disable support for per-message compression. Defaults to 1, unless
+    GRPC_ARG_MINIMAL_STACK is enabled, in which case it defaults to 0. */
+#define GRPC_ARG_ENABLE_PER_MESSAGE_COMPRESSION "grpc.per_message_compression"
+/** Enable/disable support for deadline checking. Defaults to 1, unless
+    GRPC_ARG_MINIMAL_STACK is enabled, in which case it defaults to 0 */
+#define GRPC_ARG_ENABLE_DEADLINE_CHECKS "grpc.enable_deadline_checking"
+/** Initial stream ID for http2 transports. Int valued. */
+#define GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER \
+  "grpc.http2.initial_sequence_number"
+/** Amount to read ahead on individual streams. Defaults to 64kb, larger
+    values can help throughput on high-latency connections.
+    NOTE: at some point we'd like to auto-tune this, and this parameter
+    will become a no-op. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES "grpc.http2.lookahead_bytes"
+/** How much memory to use for hpack decoding. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_DECODER \
+  "grpc.http2.hpack_table_size.decoder"
+/** How much memory to use for hpack encoding. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_ENCODER \
+  "grpc.http2.hpack_table_size.encoder"
+/** How big a frame are we willing to receive via HTTP2.
+    Min 16384, max 16777215. Larger values give lower CPU usage for large
+    messages, but more head of line blocking for small messages. */
+#define GRPC_ARG_HTTP2_MAX_FRAME_SIZE "grpc.http2.max_frame_size"
+/** Should BDP probing be performed? */
+#define GRPC_ARG_HTTP2_BDP_PROBE "grpc.http2.bdp_probe"
+/** Minimum time between sending successive ping frames without receiving any
+    data frame, Int valued, milliseconds. */
+#define GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_time_between_pings_ms"
+/** Minimum allowed time between a server receiving successive ping frames
+   without sending any data frame. Int valued, milliseconds */
+#define GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_ping_interval_without_data_ms"
+/** Channel arg to override the http2 :scheme header */
+#define GRPC_ARG_HTTP2_SCHEME "grpc.http2_scheme"
+/** How many pings can we send before needing to send a data frame or header
+    frame? (0 indicates that an infinite number of pings can be sent without
+    sending a data frame or header frame) */
+#define GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA \
+  "grpc.http2.max_pings_without_data"
+/** How many misbehaving pings the server can bear before sending goaway and
+    closing the transport? (0 indicates that the server can bear an infinite
+    number of misbehaving pings) */
+#define GRPC_ARG_HTTP2_MAX_PING_STRIKES "grpc.http2.max_ping_strikes"
+/** How much data are we willing to queue up per stream if
+    GRPC_WRITE_BUFFER_HINT is set? This is an upper bound */
+#define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
+/** Should we allow receipt of true-binary data on http2 connections?
+    Defaults to on (1) */
+#define GRPC_ARG_HTTP2_ENABLE_TRUE_BINARY "grpc.http2.true_binary"
+/** After a duration of this time the client/server pings its peer to see if the
+    transport is still alive. Int valued, milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIME_MS "grpc.keepalive_time_ms"
+/** After waiting for a duration of this time, if the keepalive ping sender does
+    not receive the ping ack, it will close the transport. Int valued,
+    milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIMEOUT_MS "grpc.keepalive_timeout_ms"
+/** Is it permissible to send keepalive pings without any outstanding streams.
+    Int valued, 0(false)/1(true). */
+#define GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS \
+  "grpc.keepalive_permit_without_calls"
+/** Default authority to pass if none specified on call construction. A string.
+ * */
+#define GRPC_ARG_DEFAULT_AUTHORITY "grpc.default_authority"
+/** Primary user agent: goes at the start of the user-agent metadata
+    sent on each request. A string. */
+#define GRPC_ARG_PRIMARY_USER_AGENT_STRING "grpc.primary_user_agent"
+/** Secondary user agent: goes at the end of the user-agent metadata
+    sent on each request. A string. */
+#define GRPC_ARG_SECONDARY_USER_AGENT_STRING "grpc.secondary_user_agent"
+/** The minimum time between subsequent connection attempts, in ms */
+#define GRPC_ARG_MIN_RECONNECT_BACKOFF_MS "grpc.min_reconnect_backoff_ms"
+/** The maximum time between subsequent connection attempts, in ms */
+#define GRPC_ARG_MAX_RECONNECT_BACKOFF_MS "grpc.max_reconnect_backoff_ms"
+/** The time between the first and second connection attempts, in ms */
+#define GRPC_ARG_INITIAL_RECONNECT_BACKOFF_MS \
+  "grpc.initial_reconnect_backoff_ms"
+/** Minimum amount of time between DNS resolutions, in ms */
+#define GRPC_ARG_DNS_MIN_TIME_BETWEEN_RESOLUTIONS_MS \
+  "grpc.dns_min_time_between_resolutions_ms"
+/** The timeout used on servers for finishing handshaking on an incoming
+    connection.  Defaults to 120 seconds. */
+#define GRPC_ARG_SERVER_HANDSHAKE_TIMEOUT_MS "grpc.server_handshake_timeout_ms"
+/** This *should* be used for testing only.
+    The caller of the secure_channel_create functions may override the target
+    name used for SSL host name checking using this channel argument which is of
+    type \a GRPC_ARG_STRING. If this argument is not specified, the name used
+    for SSL host name checking will be the target parameter (assuming that the
+    secure channel is an SSL channel). If this parameter is specified and the
+    underlying is not an SSL channel, it will just be ignored. */
+#define GRPC_SSL_TARGET_NAME_OVERRIDE_ARG "grpc.ssl_target_name_override"
+/** If non-zero, a pointer to a session cache (a pointer of type
+    grpc_ssl_session_cache*). (use grpc_ssl_session_cache_arg_vtable() to fetch
+    an appropriate pointer arg vtable) */
+#define GRPC_SSL_SESSION_CACHE_ARG "grpc.ssl_session_cache"
+/** If non-zero, it will determine the maximum frame size used by TSI's frame
+ *  protector.
+ *
+ *  NOTE: Be aware that using a large "max_frame_size" is memory inefficient
+ *        for non-zerocopy protectors. Also, increasing this value above 1MiB
+ *        can break old binaries that don't support larger than 1MiB frame
+ *        size. */
+#define GRPC_ARG_TSI_MAX_FRAME_SIZE "grpc.tsi.max_frame_size"
+/** Maximum metadata size, in bytes. Note this limit applies to the max sum of
+    all metadata key-value entries in a batch of headers. */
+#define GRPC_ARG_MAX_METADATA_SIZE "grpc.max_metadata_size"
+/** If non-zero, allow the use of SO_REUSEPORT if it's available (default 1) */
+#define GRPC_ARG_ALLOW_REUSEPORT "grpc.so_reuseport"
+/** If non-zero, a pointer to a buffer pool (a pointer of type
+ * grpc_resource_quota*). (use grpc_resource_quota_arg_vtable() to fetch an
+ * appropriate pointer arg vtable) */
+#define GRPC_ARG_RESOURCE_QUOTA "grpc.resource_quota"
+/** If non-zero, expand wildcard addresses to a list of local addresses. */
+#define GRPC_ARG_EXPAND_WILDCARD_ADDRS "grpc.expand_wildcard_addrs"
+/** Service config data in JSON form.
+    This value will be ignored if the name resolver returns a service config. */
+#define GRPC_ARG_SERVICE_CONFIG "grpc.service_config"
+/** Disable looking up the service config via the name resolver. */
+#define GRPC_ARG_SERVICE_CONFIG_DISABLE_RESOLUTION \
+  "grpc.service_config_disable_resolution"
+/** LB policy name. */
+#define GRPC_ARG_LB_POLICY_NAME "grpc.lb_policy_name"
+/** The grpc_socket_mutator instance that set the socket options. A pointer. */
+#define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
+/** The grpc_socket_factory instance to create and bind sockets. A pointer. */
+#define GRPC_ARG_SOCKET_FACTORY "grpc.socket_factory"
+/** The maximum amount of memory used by trace events per channel trace node.
+ * Once the maximum is reached, subsequent events will evict the oldest events
+ * from the buffer. The unit for this knob is bytes. Setting it to zero causes
+ * channel tracing to be disabled. */
+#define GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE \
+  "grpc.max_channel_trace_event_memory_per_node"
+/** If non-zero, gRPC library will track stats and information at at per channel
+ * level. Disabling channelz naturally disables channel tracing. The default
+ * is for channelz to be enabled. */
+#define GRPC_ARG_ENABLE_CHANNELZ "grpc.enable_channelz"
+/** If non-zero, Cronet transport will coalesce packets to fewer frames
+ * when possible. */
+#define GRPC_ARG_USE_CRONET_PACKET_COALESCING \
+  "grpc.use_cronet_packet_coalescing"
+/** Channel arg (integer) setting how large a slice to try and read from the
+   wire each time recvmsg (or equivalent) is called **/
+#define GRPC_ARG_TCP_READ_CHUNK_SIZE "grpc.experimental.tcp_read_chunk_size"
+/** Note this is not a "channel arg" key. This is the default slice size to use
+ * when trying to read from the wire if the GRPC_ARG_TCP_READ_CHUNK_SIZE
+ * channel arg is unspecified. */
+#define GRPC_TCP_DEFAULT_READ_SLICE_SIZE 8192
+#define GRPC_ARG_TCP_MIN_READ_CHUNK_SIZE \
+  "grpc.experimental.tcp_min_read_chunk_size"
+#define GRPC_ARG_TCP_MAX_READ_CHUNK_SIZE \
+  "grpc.experimental.tcp_max_read_chunk_size"
+/* TCP TX Zerocopy enable state: zero is disabled, non-zero is enabled. By
+   default, it is disabled. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_ENABLED \
+  "grpc.experimental.tcp_tx_zerocopy_enabled"
+/* TCP TX Zerocopy send threshold: only zerocopy if >= this many bytes sent. By
+   default, this is set to 16KB. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_SEND_BYTES_THRESHOLD \
+  "grpc.experimental.tcp_tx_zerocopy_send_bytes_threshold"
+/* TCP TX Zerocopy max simultaneous sends: limit for maximum number of pending
+   calls to tcp_write() using zerocopy. A tcp_write() is considered pending
+   until the kernel performs the zerocopy-done callback for all sendmsg() calls
+   issued by the tcp_write(). By default, this is set to 4. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_MAX_SIMULT_SENDS \
+  "grpc.experimental.tcp_tx_zerocopy_max_simultaneous_sends"
+/* Timeout in milliseconds to use for calls to the grpclb load balancer.
+   If 0 or unset, the balancer calls will have no deadline. */
+#define GRPC_ARG_GRPCLB_CALL_TIMEOUT_MS "grpc.grpclb_call_timeout_ms"
+/* Timeout in milliseconds to wait for the serverlist from the grpclb load
+   balancer before using fallback backend addresses from the resolver.
+   If 0, enter fallback mode immediately. Default value is 10000. */
+#define GRPC_ARG_GRPCLB_FALLBACK_TIMEOUT_MS "grpc.grpclb_fallback_timeout_ms"
+/* Timeout in milliseconds to wait for the serverlist from the xDS load
+   balancer before using fallback backend addresses from the resolver.
+   If 0, enter fallback mode immediately. Default value is 10000. */
+#define GRPC_ARG_XDS_FALLBACK_TIMEOUT_MS "grpc.xds_fallback_timeout_ms"
+/* Time in milliseconds to wait before a locality is deleted after it's removed
+   from the received EDS update. If 0, delete the locality immediately. Default
+   value is 15 minutes. */
+#define GRPC_ARG_LOCALITY_RETENTION_INTERVAL_MS \
+  "grpc.xds_locality_retention_interval_ms"
+/* Timeout in milliseconds to wait for the localities of a specific priority to
+   complete their initial connection attempt before xDS fails over to the next
+   priority. Specifically, the connection attempt of a priority is considered
+   completed when any locality of that priority is ready or all the localities
+   of that priority fail to connect. If 0, failover happens immediately. Default
+   value is 10 seconds. */
+#define GRPC_ARG_XDS_FAILOVER_TIMEOUT_MS "grpc.xds_failover_timeout_ms"
+/* Timeout in milliseconds to wait for a resource to be returned from
+ * the xds server before assuming that it does not exist.
+ * The default is 15 seconds. */
+#define GRPC_ARG_XDS_RESOURCE_DOES_NOT_EXIST_TIMEOUT_MS \
+  "grpc.xds_resource_does_not_exist_timeout_ms"
+/** If non-zero, grpc server's cronet compression workaround will be enabled */
+#define GRPC_ARG_WORKAROUND_CRONET_COMPRESSION \
+  "grpc.workaround.cronet_compression"
+/** String defining the optimization target for a channel.
+    Can be: "latency"    - attempt to minimize latency at the cost of throughput
+            "blend"      - try to balance latency and throughput
+            "throughput" - attempt to maximize throughput at the expense of
+                           latency
+    Defaults to "blend". In the current implementation "blend" is equivalent to
+    "latency". */
+#define GRPC_ARG_OPTIMIZATION_TARGET "grpc.optimization_target"
+/** If set to zero, disables retry behavior. Otherwise, transparent retries
+    are enabled for all RPCs, and configurable retries are enabled when they
+    are configured via the service config. For details, see:
+      https://github.com/grpc/proposal/blob/master/A6-client-retries.md
+ */
+#define GRPC_ARG_ENABLE_RETRIES "grpc.enable_retries"
+/** Per-RPC retry buffer size, in bytes. Default is 256 KiB. */
+#define GRPC_ARG_PER_RPC_RETRY_BUFFER_SIZE "grpc.per_rpc_retry_buffer_size"
+/** Channel arg that carries the bridged objective c object for custom metrics
+ * logging filter. */
+#define GRPC_ARG_MOBILE_LOG_CONTEXT "grpc.mobile_log_context"
+/** If non-zero, client authority filter is disabled for the channel */
+#define GRPC_ARG_DISABLE_CLIENT_AUTHORITY_FILTER \
+  "grpc.disable_client_authority_filter"
+/** If set to zero, disables use of http proxies. Enabled by default. */
+#define GRPC_ARG_ENABLE_HTTP_PROXY "grpc.enable_http_proxy"
+/** If set to non zero, surfaces the user agent string to the server. User
+    agent is surfaced by default. */
+#define GRPC_ARG_SURFACE_USER_AGENT "grpc.surface_user_agent"
+/** If set, inhibits health checking (which may be enabled via the
+ *  service config.) */
+#define GRPC_ARG_INHIBIT_HEALTH_CHECKING "grpc.inhibit_health_checking"
+/** If set, the channel's resolver is allowed to query for SRV records.
+ * For example, this is useful as a way to enable the "grpclb"
+ * load balancing policy. Note that this only works with the "ares"
+ * DNS resolver, and isn't supported by the "native" DNS resolver. */
+#define GRPC_ARG_DNS_ENABLE_SRV_QUERIES "grpc.dns_enable_srv_queries"
+/** If set, determines an upper bound on the number of milliseconds that the
+ * c-ares based DNS resolver will wait on queries before cancelling them.
+ * The default value is 120,000. Setting this to "0" will disable the
+ * overall timeout entirely. Note that this doesn't include internal c-ares
+ * timeouts/backoff/retry logic, and so the actual DNS resolution may time out
+ * sooner than the value specified here. */
+#define GRPC_ARG_DNS_ARES_QUERY_TIMEOUT_MS "grpc.dns_ares_query_timeout"
+/** If set, uses a local subchannel pool within the channel. Otherwise, uses the
+ * global subchannel pool. */
+#define GRPC_ARG_USE_LOCAL_SUBCHANNEL_POOL "grpc.use_local_subchannel_pool"
+/** gRPC Objective-C channel pooling domain string. */
+#define GRPC_ARG_CHANNEL_POOL_DOMAIN "grpc.channel_pooling_domain"
+/** gRPC Objective-C channel pooling id. */
+#define GRPC_ARG_CHANNEL_ID "grpc.channel_id"
+/** \} */
+
+/** Result of a grpc call. If the caller satisfies the prerequisites of a
+    particular operation, the grpc_call_error returned will be GRPC_CALL_OK.
+    Receiving any other value listed here is an indication of a bug in the
+    caller. */
+typedef enum grpc_call_error {
+  /** everything went ok */
+  GRPC_CALL_OK = 0,
+  /** something failed, we don't know what */
+  GRPC_CALL_ERROR,
+  /** this method is not available on the server */
+  GRPC_CALL_ERROR_NOT_ON_SERVER,
+  /** this method is not available on the client */
+  GRPC_CALL_ERROR_NOT_ON_CLIENT,
+  /** this method must be called before server_accept */
+  GRPC_CALL_ERROR_ALREADY_ACCEPTED,
+  /** this method must be called before invoke */
+  GRPC_CALL_ERROR_ALREADY_INVOKED,
+  /** this method must be called after invoke */
+  GRPC_CALL_ERROR_NOT_INVOKED,
+  /** this call is already finished
+      (writes_done or write_status has already been called) */
+  GRPC_CALL_ERROR_ALREADY_FINISHED,
+  /** there is already an outstanding read/write operation on the call */
+  GRPC_CALL_ERROR_TOO_MANY_OPERATIONS,
+  /** the flags value was illegal for this call */
+  GRPC_CALL_ERROR_INVALID_FLAGS,
+  /** invalid metadata was passed to this call */
+  GRPC_CALL_ERROR_INVALID_METADATA,
+  /** invalid message was passed to this call */
+  GRPC_CALL_ERROR_INVALID_MESSAGE,
+  /** completion queue for notification has not been registered
+   * with the server */
+  GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE,
+  /** this batch of operations leads to more operations than allowed */
+  GRPC_CALL_ERROR_BATCH_TOO_BIG,
+  /** payload type requested is not the type registered */
+  GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH,
+  /** completion queue has been shutdown */
+  GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN
+} grpc_call_error;
+
+/** Default send/receive message size limits in bytes. -1 for unlimited. */
+/** TODO(roth) Make this match the default receive limit after next release */
+#define GRPC_DEFAULT_MAX_SEND_MESSAGE_LENGTH -1
+#define GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH (4 * 1024 * 1024)
+
+/** Write Flags: */
+/** Hint that the write may be buffered and need not go out on the wire
+    immediately. GRPC is free to buffer the message until the next non-buffered
+    write, or until writes_done, but it need not buffer completely or at all. */
+#define GRPC_WRITE_BUFFER_HINT (0x00000001u)
+/** Force compression to be disabled for a particular write
+    (start_write/add_metadata). Illegal on invoke/accept. */
+#define GRPC_WRITE_NO_COMPRESS (0x00000002u)
+/** Force this message to be written to the socket before completing it */
+#define GRPC_WRITE_THROUGH (0x00000004u)
+/** Mask of all valid flags. */
+#define GRPC_WRITE_USED_MASK \
+  (GRPC_WRITE_BUFFER_HINT | GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_THROUGH)
+
+/** Initial metadata flags */
+/** Signal that the call is idempotent */
+#define GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST (0x00000010u)
+/** Signal that the call should not return UNAVAILABLE before it has started */
+#define GRPC_INITIAL_METADATA_WAIT_FOR_READY (0x00000020u)
+/** Signal that the call is cacheable. GRPC is free to use GET verb */
+#define GRPC_INITIAL_METADATA_CACHEABLE_REQUEST (0x00000040u)
+/** Signal that GRPC_INITIAL_METADATA_WAIT_FOR_READY was explicitly set
+    by the calling application. */
+#define GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET (0x00000080u)
+/** Signal that the initial metadata should be corked */
+#define GRPC_INITIAL_METADATA_CORKED (0x00000100u)
+
+/** Mask of all valid flags */
+#define GRPC_INITIAL_METADATA_USED_MASK                  \
+  (GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST |            \
+   GRPC_INITIAL_METADATA_WAIT_FOR_READY |                \
+   GRPC_INITIAL_METADATA_CACHEABLE_REQUEST |             \
+   GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET | \
+   GRPC_INITIAL_METADATA_CORKED | GRPC_WRITE_THROUGH)
+
+/** A single metadata element */
+typedef struct grpc_metadata {
+  /** the key, value values are expected to line up with grpc_mdelem: if
+     changing them, update metadata.h at the same time. */
+  grpc_slice key;
+  grpc_slice value;
+
+  uint32_t flags;
+
+  /** The following fields are reserved for grpc internal use.
+      There is no need to initialize them, and they will be set to garbage
+      during calls to grpc. */
+  struct /* internal */ {
+    void* obfuscated[4];
+  } internal_data;
+} grpc_metadata;
+
+/** The type of completion (for grpc_event) */
+typedef enum grpc_completion_type {
+  /** Shutting down */
+  GRPC_QUEUE_SHUTDOWN,
+  /** No event before timeout */
+  GRPC_QUEUE_TIMEOUT,
+  /** Operation completion */
+  GRPC_OP_COMPLETE
+} grpc_completion_type;
+
+/** The result of an operation.
+
+    Returned by a completion queue when the operation started with tag. */
+typedef struct grpc_event {
+  /** The type of the completion. */
+  grpc_completion_type type;
+  /** If the grpc_completion_type is GRPC_OP_COMPLETE, this field indicates
+      whether the operation was successful or not; 0 in case of failure and
+      non-zero in case of success.
+      If grpc_completion_type is GRPC_QUEUE_SHUTDOWN or GRPC_QUEUE_TIMEOUT, this
+      field is guaranteed to be 0 */
+  int success;
+  /** The tag passed to grpc_call_start_batch etc to start this operation.
+      *Only* GRPC_OP_COMPLETE has a tag. For all other grpc_completion_type
+      values, tag is uninitialized. */
+  void* tag;
+} grpc_event;
+
+typedef struct {
+  size_t count;
+  size_t capacity;
+  grpc_metadata* metadata;
+} grpc_metadata_array;
+
+typedef struct {
+  grpc_slice method;
+  grpc_slice host;
+  gpr_timespec deadline;
+  uint32_t flags;
+  void* reserved;
+} grpc_call_details;
+
+typedef enum {
+  /** Send initial metadata: one and only one instance MUST be sent for each
+      call, unless the call was cancelled - in which case this can be skipped.
+      This op completes after all bytes of metadata have been accepted by
+      outgoing flow control. */
+  GRPC_OP_SEND_INITIAL_METADATA = 0,
+  /** Send a message: 0 or more of these operations can occur for each call.
+      This op completes after all bytes for the message have been accepted by
+      outgoing flow control. */
+  GRPC_OP_SEND_MESSAGE,
+  /** Send a close from the client: one and only one instance MUST be sent from
+      the client, unless the call was cancelled - in which case this can be
+      skipped. This op completes after all bytes for the call
+      (including the close) have passed outgoing flow control. */
+  GRPC_OP_SEND_CLOSE_FROM_CLIENT,
+  /** Send status from the server: one and only one instance MUST be sent from
+      the server unless the call was cancelled - in which case this can be
+      skipped. This op completes after all bytes for the call
+      (including the status) have passed outgoing flow control. */
+  GRPC_OP_SEND_STATUS_FROM_SERVER,
+  /** Receive initial metadata: one and only one MUST be made on the client,
+      must not be made on the server.
+      This op completes after all initial metadata has been read from the
+      peer. */
+  GRPC_OP_RECV_INITIAL_METADATA,
+  /** Receive a message: 0 or more of these operations can occur for each call.
+      This op completes after all bytes of the received message have been
+      read, or after a half-close has been received on this call. */
+  GRPC_OP_RECV_MESSAGE,
+  /** Receive status on the client: one and only one must be made on the client.
+      This operation always succeeds, meaning ops paired with this operation
+      will also appear to succeed, even though they may not have. In that case
+      the status will indicate some failure.
+      This op completes after all activity on the call has completed. */
+  GRPC_OP_RECV_STATUS_ON_CLIENT,
+  /** Receive close on the server: one and only one must be made on the
+      server. This op completes after the close has been received by the
+      server. This operation always succeeds, meaning ops paired with
+      this operation will also appear to succeed, even though they may not
+      have. */
+  GRPC_OP_RECV_CLOSE_ON_SERVER
+} grpc_op_type;
+
+struct grpc_byte_buffer;
+
+/** Operation data: one field for each op type (except SEND_CLOSE_FROM_CLIENT
+   which has no arguments) */
+typedef struct grpc_op {
+  /** Operation type, as defined by grpc_op_type */
+  grpc_op_type op;
+  /** Write flags bitset for grpc_begin_messages */
+  uint32_t flags;
+  /** Reserved for future usage */
+  void* reserved;
+  union grpc_op_data {
+    /** Reserved for future usage */
+    struct /* internal */ {
+      void* reserved[8];
+    } reserved;
+    struct grpc_op_send_initial_metadata {
+      size_t count;
+      grpc_metadata* metadata;
+      /** If \a is_set, \a compression_level will be used for the call.
+       * Otherwise, \a compression_level won't be considered */
+      struct grpc_op_send_initial_metadata_maybe_compression_level {
+        uint8_t is_set;
+        grpc_compression_level level;
+      } maybe_compression_level;
+    } send_initial_metadata;
+    struct grpc_op_send_message {
+      /** This op takes ownership of the slices in send_message.  After
+       * a call completes, the contents of send_message are not guaranteed
+       * and likely empty.  The original owner should still call
+       * grpc_byte_buffer_destroy() on this object however.
+       */
+      struct grpc_byte_buffer* send_message;
+    } send_message;
+    struct grpc_op_send_status_from_server {
+      size_t trailing_metadata_count;
+      grpc_metadata* trailing_metadata;
+      grpc_status_code status;
+      /** optional: set to NULL if no details need sending, non-NULL if they do
+       * pointer will not be retained past the start_batch call
+       */
+      grpc_slice* status_details;
+    } send_status_from_server;
+    /** ownership of the array is with the caller, but ownership of the elements
+        stays with the call object (ie key, value members are owned by the call
+        object, recv_initial_metadata->array is owned by the caller).
+        After the operation completes, call grpc_metadata_array_destroy on this
+        value, or reuse it in a future op. */
+    struct grpc_op_recv_initial_metadata {
+      grpc_metadata_array* recv_initial_metadata;
+    } recv_initial_metadata;
+    /** ownership of the byte buffer is moved to the caller; the caller must
+        call grpc_byte_buffer_destroy on this value, or reuse it in a future op.
+        The returned byte buffer will be NULL if trailing metadata was
+        received instead of a message.
+       */
+    struct grpc_op_recv_message {
+      struct grpc_byte_buffer** recv_message;
+    } recv_message;
+    struct grpc_op_recv_status_on_client {
+      /** ownership of the array is with the caller, but ownership of the
+          elements stays with the call object (ie key, value members are owned
+          by the call object, trailing_metadata->array is owned by the caller).
+          After the operation completes, call grpc_metadata_array_destroy on
+          this value, or reuse it in a future op. */
+      grpc_metadata_array* trailing_metadata;
+      grpc_status_code* status;
+      grpc_slice* status_details;
+      /** If this is not nullptr, it will be populated with the full fidelity
+       * error string for debugging purposes. The application is responsible
+       * for freeing the data by using gpr_free(). */
+      const char** error_string;
+    } recv_status_on_client;
+    struct grpc_op_recv_close_on_server {
+      /** out argument, set to 1 if the call failed in any way (seen as a
+          cancellation on the server), or 0 if the call succeeded */
+      int* cancelled;
+    } recv_close_on_server;
+  } data;
+} grpc_op;
+
+/** Information requested from the channel. */
+typedef struct {
+  /** If non-NULL, will be set to point to a string indicating the LB
+   * policy name.  Caller takes ownership. */
+  char** lb_policy_name;
+  /** If non-NULL, will be set to point to a string containing the
+   * service config used by the channel in JSON form. */
+  char** service_config_json;
+} grpc_channel_info;
+
+typedef struct grpc_resource_quota grpc_resource_quota;
+
+/** Completion queues internally MAY maintain a set of file descriptors in a
+    structure called 'pollset'. This enum specifies if a completion queue has an
+    associated pollset and any restrictions on the type of file descriptors that
+    can be present in the pollset.
+
+    I/O progress can only be made when grpc_completion_queue_next() or
+    grpc_completion_queue_pluck() are called on the completion queue (unless the
+    grpc_cq_polling_type is GRPC_CQ_NON_POLLING) and hence it is very important
+    to actively call these APIs */
+typedef enum {
+  /** The completion queue will have an associated pollset and there is no
+      restriction on the type of file descriptors the pollset may contain */
+  GRPC_CQ_DEFAULT_POLLING,
+
+  /** Similar to GRPC_CQ_DEFAULT_POLLING except that the completion queues will
+      not contain any 'listening file descriptors' (i.e file descriptors used to
+      listen to incoming channels) */
+  GRPC_CQ_NON_LISTENING,
+
+  /** The completion queue will not have an associated pollset. Note that
+      grpc_completion_queue_next() or grpc_completion_queue_pluck() MUST still
+      be called to pop events from the completion queue; it is not required to
+      call them actively to make I/O progress */
+  GRPC_CQ_NON_POLLING
+} grpc_cq_polling_type;
+
+/** Specifies the type of APIs to use to pop events from the completion queue */
+typedef enum {
+  /** Events are popped out by calling grpc_completion_queue_next() API ONLY */
+  GRPC_CQ_NEXT,
+
+  /** Events are popped out by calling grpc_completion_queue_pluck() API ONLY*/
+  GRPC_CQ_PLUCK,
+
+  /** EXPERIMENTAL: Events trigger a callback specified as the tag */
+  GRPC_CQ_CALLBACK
+} grpc_cq_completion_type;
+
+/** EXPERIMENTAL: Specifies an interface class to be used as a tag
+    for callback-based completion queues. This can be used directly,
+    as the first element of a struct in C, or as a base class in C++.
+    Its "run" value should be assigned to some non-member function, such as
+    a static method. */
+typedef struct grpc_experimental_completion_queue_functor {
+  /** The run member specifies a function that will be called when this
+      tag is extracted from the completion queue. Its arguments will be a
+      pointer to this functor and a boolean that indicates whether the
+      operation succeeded (non-zero) or failed (zero) */
+  void (*functor_run)(struct grpc_experimental_completion_queue_functor*, int);
+
+  /** The inlineable member specifies whether this functor can be run inline.
+      This should only be used for trivial internally-defined functors. */
+  int inlineable;
+
+  /** The following fields are not API. They are meant for internal use. */
+  int internal_success;
+  struct grpc_experimental_completion_queue_functor* internal_next;
+} grpc_experimental_completion_queue_functor;
+
+/* The upgrade to version 2 is currently experimental. */
+
+#define GRPC_CQ_CURRENT_VERSION 2
+#define GRPC_CQ_VERSION_MINIMUM_FOR_CALLBACKABLE 2
+typedef struct grpc_completion_queue_attributes {
+  /** The version number of this structure. More fields might be added to this
+     structure in future. */
+  int version; /** Set to GRPC_CQ_CURRENT_VERSION */
+
+  grpc_cq_completion_type cq_completion_type;
+
+  grpc_cq_polling_type cq_polling_type;
+
+  /* END OF VERSION 1 CQ ATTRIBUTES */
+
+  /* EXPERIMENTAL: START OF VERSION 2 CQ ATTRIBUTES */
+  /** When creating a callbackable CQ, pass in a functor to get invoked when
+   * shutdown is complete */
+  grpc_experimental_completion_queue_functor* cq_shutdown_cb;
+
+  /* END OF VERSION 2 CQ ATTRIBUTES */
+} grpc_completion_queue_attributes;
+
+/** The completion queue factory structure is opaque to the callers of grpc */
+typedef struct grpc_completion_queue_factory grpc_completion_queue_factory;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_GRPC_TYPES_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/log.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/log.h
new file mode 100644
index 0000000..ad7f024
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/log.h	
@@ -0,0 +1,112 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_LOG_H
+#define GRPC_IMPL_CODEGEN_LOG_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stdarg.h>
+#include <stdlib.h> /* for abort() */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** GPR log API.
+
+   Usage (within grpc):
+
+   int argument1 = 3;
+   char* argument2 = "hello";
+   gpr_log(GPR_DEBUG, "format string %d", argument1);
+   gpr_log(GPR_INFO, "hello world");
+   gpr_log(GPR_ERROR, "%d %s!!", argument1, argument2); */
+
+/** The severity of a log message - use the #defines below when calling into
+   gpr_log to additionally supply file and line data */
+typedef enum gpr_log_severity {
+  GPR_LOG_SEVERITY_DEBUG,
+  GPR_LOG_SEVERITY_INFO,
+  GPR_LOG_SEVERITY_ERROR
+} gpr_log_severity;
+
+#define GPR_LOG_VERBOSITY_UNSET -1
+
+/** Returns a string representation of the log severity */
+GPRAPI const char* gpr_log_severity_string(gpr_log_severity severity);
+
+/** Macros to build log contexts at various severity levels */
+#define GPR_DEBUG __FILE__, __LINE__, GPR_LOG_SEVERITY_DEBUG
+#define GPR_INFO __FILE__, __LINE__, GPR_LOG_SEVERITY_INFO
+#define GPR_ERROR __FILE__, __LINE__, GPR_LOG_SEVERITY_ERROR
+
+/** Log a message. It's advised to use GPR_xxx above to generate the context
+ * for each message */
+GPRAPI void gpr_log(const char* file, int line, gpr_log_severity severity,
+                    const char* format, ...) GPR_PRINT_FORMAT_CHECK(4, 5);
+
+GPRAPI int gpr_should_log(gpr_log_severity severity);
+
+GPRAPI void gpr_log_message(const char* file, int line,
+                            gpr_log_severity severity, const char* message);
+
+/** Set global log verbosity */
+GPRAPI void gpr_set_log_verbosity(gpr_log_severity min_severity_to_print);
+
+GPRAPI void gpr_log_verbosity_init(void);
+
+/** Log overrides: applications can use this API to intercept logging calls
+   and use their own implementations */
+
+struct gpr_log_func_args {
+  const char* file;
+  int line;
+  gpr_log_severity severity;
+  const char* message;
+};
+
+typedef struct gpr_log_func_args gpr_log_func_args;
+
+typedef void (*gpr_log_func)(gpr_log_func_args* args);
+GPRAPI void gpr_set_log_function(gpr_log_func func);
+
+/** abort() the process if x is zero, having written a line to the log.
+
+   Intended for internal invariants.  If the error can be recovered from,
+   without the possibility of corruption, or might best be reflected via
+   an exception in a higher-level language, consider returning error code.  */
+#define GPR_ASSERT(x)                                 \
+  do {                                                \
+    if (GPR_UNLIKELY(!(x))) {                         \
+      gpr_log(GPR_ERROR, "assertion failed: %s", #x); \
+      abort();                                        \
+    }                                                 \
+  } while (0)
+
+#ifndef NDEBUG
+#define GPR_DEBUG_ASSERT(x) GPR_ASSERT(x)
+#else
+#define GPR_DEBUG_ASSERT(x)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_LOG_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/port_platform.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/port_platform.h
new file mode 100644
index 0000000..cb3fb79
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/port_platform.h	
@@ -0,0 +1,716 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_PORT_PLATFORM_H
+#define GRPC_IMPL_CODEGEN_PORT_PLATFORM_H
+
+/*
+ * Define GPR_BACKWARDS_COMPATIBILITY_MODE to try harder to be ABI
+ * compatible with older platforms (currently only on Linux)
+ * Causes:
+ *  - some libc calls to be gotten via dlsym
+ *  - some syscalls to be made directly
+ */
+
+/*
+ * Defines GRPC_USE_ABSL to use Abseil Common Libraries (C++)
+ */
+#ifndef GRPC_USE_ABSL
+#define GRPC_USE_ABSL 1
+#endif
+
+/*
+ * Defines GPR_ABSEIL_SYNC to use synchronization features from Abseil
+ */
+#ifndef GPR_ABSEIL_SYNC
+/* #define GPR_ABSEIL_SYNC 1 */
+#endif
+
+/* Get windows.h included everywhere (we need it) */
+#if defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32)
+#ifndef WIN32_LEAN_AND_MEAN
+#define GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#define WIN32_LEAN_AND_MEAN
+#endif /* WIN32_LEAN_AND_MEAN */
+
+#ifndef NOMINMAX
+#define GRPC_NOMINMX_WAS_NOT_DEFINED
+#define NOMINMAX
+#endif /* NOMINMAX */
+
+#ifndef _WIN32_WINNT
+#error \
+    "Please compile grpc with _WIN32_WINNT of at least 0x600 (aka Windows Vista)"
+#else /* !defined(_WIN32_WINNT) */
+#if (_WIN32_WINNT < 0x0600)
+#error \
+    "Please compile grpc with _WIN32_WINNT of at least 0x600 (aka Windows Vista)"
+#endif /* _WIN32_WINNT < 0x0600 */
+#endif /* defined(_WIN32_WINNT) */
+
+#include <windows.h>
+
+#ifdef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#undef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#undef WIN32_LEAN_AND_MEAN
+#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */
+
+#ifdef GRPC_NOMINMAX_WAS_NOT_DEFINED
+#undef GRPC_NOMINMAX_WAS_NOT_DEFINED
+#undef NOMINMAX
+#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */
+#endif /* defined(_WIN64) || defined(WIN64) || defined(_WIN32) || \
+          defined(WIN32) */
+
+/* Override this file with one for your platform if you need to redefine
+   things.  */
+
+#if !defined(GPR_NO_AUTODETECT_PLATFORM)
+#if defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32)
+#if defined(_WIN64) || defined(WIN64)
+#define GPR_ARCH_64 1
+#else
+#define GPR_ARCH_32 1
+#endif
+#define GPR_PLATFORM_STRING "windows"
+#define GPR_WINDOWS 1
+#define GPR_WINDOWS_SUBPROCESS 1
+#define GPR_WINDOWS_ENV
+#ifdef __MSYS__
+#define GPR_GETPID_IN_UNISTD_H 1
+#define GPR_MSYS_TMPFILE
+#define GPR_POSIX_LOG
+#define GPR_POSIX_STRING
+#define GPR_POSIX_TIME
+#else
+#define GPR_GETPID_IN_PROCESS_H 1
+#define GPR_WINDOWS_TMPFILE
+#define GPR_WINDOWS_LOG
+#define GPR_WINDOWS_CRASH_HANDLER 1
+#define GPR_WINDOWS_STRING
+#define GPR_WINDOWS_TIME
+#endif
+#ifdef __GNUC__
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#else
+#define GPR_WINDOWS_ATOMIC 1
+#define GPR_MSVC_TLS 1
+#endif
+#elif defined(GPR_MANYLINUX1)
+// TODO(atash): manylinux1 is just another __linux__ but with ancient
+// libraries; it should be integrated with the `__linux__` definitions below.
+#define GPR_PLATFORM_STRING "manylinux"
+#define GPR_POSIX_CRASH_HANDLER 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_LINUX 1
+#define GPR_LINUX_LOG 1
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#define GPR_LINUX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#include <linux/version.h>
+#elif defined(ANDROID) || defined(__ANDROID__)
+#define GPR_PLATFORM_STRING "android"
+#define GPR_ANDROID 1
+// TODO(apolcyn): re-evaluate support for c-ares
+// on android after upgrading our c-ares dependency.
+// See https://github.com/grpc/grpc/issues/18038.
+#define GRPC_ARES 0
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_SYNC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_ANDROID_LOG 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#elif defined(__linux__)
+#define GPR_PLATFORM_STRING "linux"
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <features.h>
+#define GPR_CPU_LINUX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_LINUX 1
+#define GPR_LINUX_LOG
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#define GPR_LINUX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#ifdef __GLIBC__
+#define GPR_POSIX_CRASH_HANDLER 1
+#define GPR_LINUX_PTHREAD_NAME 1
+#include <linux/version.h>
+#else /* musl libc */
+#define GPR_MUSL_LIBC_COMPAT 1
+#endif
+#elif defined(__ASYLO__)
+#define GPR_ARCH_64 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_TLS 1
+#define GPR_PLATFORM_STRING "asylo"
+#define GPR_GCC_SYNC 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_TIME 1
+#define GPR_POSIX_ENV 1
+#define GPR_ASYLO 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETADDR
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_TIMER_USE_GENERIC 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#define GRPC_ARES 0
+#define GPR_NO_AUTODETECT_PLATFORM 1
+#elif defined(__APPLE__)
+#include <Availability.h>
+#include <TargetConditionals.h>
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#if TARGET_OS_IPHONE
+#define GPR_PLATFORM_STRING "ios"
+#define GPR_CPU_IPHONE 1
+#define GPR_PTHREAD_TLS 1
+#define GRPC_CFSTREAM 1
+/* the c-ares resolver isn't safe to enable on iOS */
+#define GRPC_ARES 0
+#else /* TARGET_OS_IPHONE */
+#define GPR_PLATFORM_STRING "osx"
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+#if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_7
+#define GPR_CPU_IPHONE 1
+#define GPR_PTHREAD_TLS 1
+#else /* __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_7 */
+#define GPR_CPU_POSIX 1
+/* TODO(vjpai): there is a reported issue in bazel build for Mac where __thread
+   in a header is currently not working (bazelbuild/bazel#4341). Remove
+   the following conditional and use GPR_GCC_TLS when that is fixed */
+#ifndef GRPC_BAZEL_BUILD
+#define GPR_GCC_TLS 1
+#else /* GRPC_BAZEL_BUILD */
+#define GPR_PTHREAD_TLS 1
+#endif /* GRPC_BAZEL_BUILD */
+#define GPR_APPLE_PTHREAD_NAME 1
+#endif
+#else /* __MAC_OS_X_VERSION_MIN_REQUIRED */
+#define GPR_CPU_POSIX 1
+/* TODO(vjpai): Remove the following conditional and use only GPR_GCC_TLS
+   when bazelbuild/bazel#4341 is fixed */
+#ifndef GRPC_BAZEL_BUILD
+#define GPR_GCC_TLS 1
+#else /* GRPC_BAZEL_BUILD */
+#define GPR_PTHREAD_TLS 1
+#endif /* GRPC_BAZEL_BUILD */
+#endif
+#define GPR_POSIX_CRASH_HANDLER 1
+#endif
+#define GPR_APPLE 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifndef GRPC_CFSTREAM
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#endif
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(__FreeBSD__)
+#define GPR_PLATFORM_STRING "freebsd"
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#define GPR_FREEBSD 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(__OpenBSD__)
+#define GPR_PLATFORM_STRING "openbsd"
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#define GPR_OPENBSD 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#define GPR_SUPPORT_CHANNELS_FROM_FD 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(__sun) && defined(__SVR4)
+#define GPR_PLATFORM_STRING "solaris"
+#define GPR_SOLARIS 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(_AIX)
+#define GPR_PLATFORM_STRING "aix"
+#ifndef _ALL_SOURCE
+#define _ALL_SOURCE
+#endif
+#define GPR_AIX 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(__native_client__)
+#define GPR_PLATFORM_STRING "nacl"
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#define GPR_NACL 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_GCC_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#ifdef _LP64
+#define GPR_ARCH_64 1
+#else /* _LP64 */
+#define GPR_ARCH_32 1
+#endif /* _LP64 */
+#elif defined(__Fuchsia__)
+#define GPR_FUCHSIA 1
+#define GPR_ARCH_64 1
+#define GPR_PLATFORM_STRING "fuchsia"
+#include <features.h>
+// Specifying musl libc affects wrap_memcpy.c. It causes memmove() to be
+// invoked.
+#define GPR_MUSL_LIBC_COMPAT 1
+#define GPR_CPU_POSIX 1
+#define GPR_GCC_ATOMIC 1
+#define GPR_PTHREAD_TLS 1
+#define GPR_POSIX_LOG 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_ENV 1
+#define GPR_POSIX_TMPFILE 1
+#define GPR_POSIX_SUBPROCESS 1
+#define GPR_POSIX_SYNC 1
+#define GPR_POSIX_STRING 1
+#define GPR_POSIX_TIME 1
+#define GPR_HAS_PTHREAD_H 1
+#define GPR_GETPID_IN_UNISTD_H 1
+#else
+#error "Could not auto-detect platform"
+#endif
+#endif /* GPR_NO_AUTODETECT_PLATFORM */
+
+#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE)
+/*
+ * For backward compatibility mode, reset _FORTIFY_SOURCE to prevent
+ * a library from having non-standard symbols such as __asprintf_chk.
+ * This helps non-glibc systems such as alpine using musl to find symbols.
+ */
+#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
+#undef _FORTIFY_SOURCE
+#define _FORTIFY_SOURCE 0
+#endif
+#endif
+
+/*
+ *  There are platforms for which TLS should not be used even though the
+ * compiler makes it seem like it's supported (Android NDK < r12b for example).
+ * This is primarily because of linker problems and toolchain misconfiguration:
+ * TLS isn't supported until NDK r12b per
+ * https://developer.android.com/ndk/downloads/revision_history.html
+ * TLS also does not work with Android NDK if GCC is being used as the compiler
+ * instead of Clang.
+ * Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in
+ * <android/ndk-version.h>. For NDK < r16, users should define these macros,
+ * e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11. */
+#if defined(__ANDROID__) && defined(GPR_GCC_TLS)
+#if __has_include(<android/ndk-version.h>)
+#include <android/ndk-version.h>
+#endif /* __has_include(<android/ndk-version.h>) */
+#if (defined(__clang__) && defined(__NDK_MAJOR__) && defined(__NDK_MINOR__) && \
+     ((__NDK_MAJOR__ < 12) ||                                                  \
+      ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))) ||                      \
+    (defined(__GNUC__) && !defined(__clang__))
+#undef GPR_GCC_TLS
+#define GPR_PTHREAD_TLS 1
+#endif
+#endif /*defined(__ANDROID__) && defined(GPR_GCC_TLS) */
+
+#if defined(__has_include)
+#if __has_include(<atomic>)
+#define GRPC_HAS_CXX11_ATOMIC
+#endif /* __has_include(<atomic>) */
+#endif /* defined(__has_include) */
+
+#ifndef GPR_PLATFORM_STRING
+#warning "GPR_PLATFORM_STRING not auto-detected"
+#define GPR_PLATFORM_STRING "unknown"
+#endif
+
+#ifdef GPR_GCOV
+#undef GPR_FORBID_UNREACHABLE_CODE
+#define GPR_FORBID_UNREACHABLE_CODE 1
+#endif
+
+#ifdef _MSC_VER
+#if _MSC_VER < 1700
+typedef __int8 int8_t;
+typedef __int16 int16_t;
+typedef __int32 int32_t;
+typedef __int64 int64_t;
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int16 uint16_t;
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int64 uint64_t;
+#else
+#include <stdint.h>
+#endif /* _MSC_VER < 1700 */
+#else
+#include <stdint.h>
+#endif /* _MSC_VER */
+
+/* Type of cycle clock implementation */
+#ifdef GPR_LINUX
+/* Disable cycle clock by default.
+   TODO(soheil): enable when we support fallback for unstable cycle clocks.
+#if defined(__i386__)
+#define GPR_CYCLE_COUNTER_RDTSC_32 1
+#elif defined(__x86_64__) || defined(__amd64__)
+#define GPR_CYCLE_COUNTER_RDTSC_64 1
+#else
+#define GPR_CYCLE_COUNTER_FALLBACK 1
+#endif
+*/
+#define GPR_CYCLE_COUNTER_FALLBACK 1
+#else
+#define GPR_CYCLE_COUNTER_FALLBACK 1
+#endif /* GPR_LINUX */
+
+/* Cache line alignment */
+#ifndef GPR_CACHELINE_SIZE_LOG
+#if defined(__i386__) || defined(__x86_64__)
+#define GPR_CACHELINE_SIZE_LOG 6
+#endif
+#ifndef GPR_CACHELINE_SIZE_LOG
+/* A reasonable default guess. Note that overestimates tend to waste more
+   space, while underestimates tend to waste more time. */
+#define GPR_CACHELINE_SIZE_LOG 6
+#endif /* GPR_CACHELINE_SIZE_LOG */
+#endif /* GPR_CACHELINE_SIZE_LOG */
+
+#define GPR_CACHELINE_SIZE (1 << GPR_CACHELINE_SIZE_LOG)
+
+/* scrub GCC_ATOMIC if it's not available on this compiler */
+#if defined(GPR_GCC_ATOMIC) && !defined(__ATOMIC_RELAXED)
+#undef GPR_GCC_ATOMIC
+#define GPR_GCC_SYNC 1
+#endif
+
+/* Validate platform combinations */
+#if defined(GPR_GCC_ATOMIC) + defined(GPR_GCC_SYNC) + \
+        defined(GPR_WINDOWS_ATOMIC) !=                \
+    1
+#error Must define exactly one of GPR_GCC_ATOMIC, GPR_GCC_SYNC, GPR_WINDOWS_ATOMIC
+#endif
+
+#if defined(GPR_ARCH_32) + defined(GPR_ARCH_64) != 1
+#error Must define exactly one of GPR_ARCH_32, GPR_ARCH_64
+#endif
+
+#if defined(GPR_CPU_LINUX) + defined(GPR_CPU_POSIX) + defined(GPR_WINDOWS) + \
+        defined(GPR_CPU_IPHONE) + defined(GPR_CPU_CUSTOM) !=                 \
+    1
+#error Must define exactly one of GPR_CPU_LINUX, GPR_CPU_POSIX, GPR_WINDOWS, GPR_CPU_IPHONE, GPR_CPU_CUSTOM
+#endif
+
+#if defined(GPR_MSVC_TLS) + defined(GPR_GCC_TLS) + defined(GPR_PTHREAD_TLS) + \
+        defined(GPR_CUSTOM_TLS) !=                                            \
+    1
+#error Must define exactly one of GPR_MSVC_TLS, GPR_GCC_TLS, GPR_PTHREAD_TLS, GPR_CUSTOM_TLS
+#endif
+
+/* maximum alignment needed for any type on this platform, rounded up to a
+   power of two */
+#define GPR_MAX_ALIGNMENT 16
+
+#ifndef GRPC_ARES
+#define GRPC_ARES 1
+#endif
+
+#ifndef GRPC_IF_NAMETOINDEX
+#define GRPC_IF_NAMETOINDEX 1
+#endif
+
+#ifndef GRPC_MUST_USE_RESULT
+#if defined(__GNUC__) && !defined(__MINGW32__)
+#define GRPC_MUST_USE_RESULT __attribute__((warn_unused_result))
+#define GPR_ALIGN_STRUCT(n) __attribute__((aligned(n)))
+#else
+#define GRPC_MUST_USE_RESULT
+#define GPR_ALIGN_STRUCT(n)
+#endif
+#endif
+
+#ifndef GRPC_UNUSED
+#if defined(__GNUC__) && !defined(__MINGW32__)
+#define GRPC_UNUSED __attribute__((unused))
+#else
+#define GRPC_UNUSED
+#endif
+#endif
+
+#ifndef GPR_PRINT_FORMAT_CHECK
+#ifdef __GNUC__
+#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS) \
+  __attribute__((format(printf, FORMAT_STR, ARGS)))
+#else
+#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS)
+#endif
+#endif /* GPR_PRINT_FORMAT_CHECK */
+
+#if GPR_FORBID_UNREACHABLE_CODE
+#define GPR_UNREACHABLE_CODE(STATEMENT)
+#else
+#define GPR_UNREACHABLE_CODE(STATEMENT)             \
+  do {                                              \
+    gpr_log(GPR_ERROR, "Should never reach here."); \
+    abort();                                        \
+    STATEMENT;                                      \
+  } while (0)
+#endif /* GPR_FORBID_UNREACHABLE_CODE */
+
+#ifndef GPRAPI
+#define GPRAPI
+#endif
+
+#ifndef GRPCAPI
+#define GRPCAPI GPRAPI
+#endif
+
+#ifndef CENSUSAPI
+#define CENSUSAPI GRPCAPI
+#endif
+
+#ifndef GPR_HAS_ATTRIBUTE
+#ifdef __has_attribute
+#define GPR_HAS_ATTRIBUTE(a) __has_attribute(a)
+#else
+#define GPR_HAS_ATTRIBUTE(a) 0
+#endif
+#endif /* GPR_HAS_ATTRIBUTE */
+
+#ifndef GPR_HAS_FEATURE
+#ifdef __has_feature
+#define GPR_HAS_FEATURE(a) __has_feature(a)
+#else
+#define GPR_HAS_FEATURE(a) 0
+#endif
+#endif /* GPR_HAS_FEATURE */
+
+#ifndef GPR_ATTRIBUTE_NOINLINE
+#if GPR_HAS_ATTRIBUTE(noinline) || (defined(__GNUC__) && !defined(__clang__))
+#define GPR_ATTRIBUTE_NOINLINE __attribute__((noinline))
+#define GPR_HAS_ATTRIBUTE_NOINLINE 1
+#else
+#define GPR_ATTRIBUTE_NOINLINE
+#endif
+#endif /* GPR_ATTRIBUTE_NOINLINE */
+
+#ifndef GPR_ATTRIBUTE_WEAK
+/* Attribute weak is broken on LLVM/windows:
+ * https://bugs.llvm.org/show_bug.cgi?id=37598 */
+#if (GPR_HAS_ATTRIBUTE(weak) || (defined(__GNUC__) && !defined(__clang__))) && \
+    !(defined(__llvm__) && defined(_WIN32))
+#define GPR_ATTRIBUTE_WEAK __attribute__((weak))
+#define GPR_HAS_ATTRIBUTE_WEAK 1
+#else
+#define GPR_ATTRIBUTE_WEAK
+#endif
+#endif /* GPR_ATTRIBUTE_WEAK */
+
+#ifndef GPR_ATTRIBUTE_NO_TSAN /* (1) */
+#if GPR_HAS_FEATURE(thread_sanitizer)
+#define GPR_ATTRIBUTE_NO_TSAN __attribute__((no_sanitize("thread")))
+#endif                        /* GPR_HAS_FEATURE */
+#ifndef GPR_ATTRIBUTE_NO_TSAN /* (2) */
+#define GPR_ATTRIBUTE_NO_TSAN
+#endif /* GPR_ATTRIBUTE_NO_TSAN (2) */
+#endif /* GPR_ATTRIBUTE_NO_TSAN (1) */
+
+/* GRPC_TSAN_ENABLED will be defined, when compiled with thread sanitizer. */
+#if defined(__SANITIZE_THREAD__)
+#define GRPC_TSAN_ENABLED
+#elif GPR_HAS_FEATURE(thread_sanitizer)
+#define GRPC_TSAN_ENABLED
+#endif
+
+/* GRPC_ASAN_ENABLED will be defined, when compiled with address sanitizer. */
+#if defined(__SANITIZE_ADDRESS__)
+#define GRPC_ASAN_ENABLED
+#elif GPR_HAS_FEATURE(address_sanitizer)
+#define GRPC_ASAN_ENABLED
+#endif
+
+/* GRPC_ALLOW_EXCEPTIONS should be 0 or 1 if exceptions are allowed or not */
+#ifndef GRPC_ALLOW_EXCEPTIONS
+#ifdef GPR_WINDOWS
+#if defined(_MSC_VER) && defined(_CPPUNWIND)
+#define GRPC_ALLOW_EXCEPTIONS 1
+#elif defined(__EXCEPTIONS)
+#define GRPC_ALLOW_EXCEPTIONS 1
+#else
+#define GRPC_ALLOW_EXCEPTIONS 0
+#endif
+#else /* GPR_WINDOWS */
+#ifdef __EXCEPTIONS
+#define GRPC_ALLOW_EXCEPTIONS 1
+#else /* __EXCEPTIONS */
+#define GRPC_ALLOW_EXCEPTIONS 0
+#endif /* __EXCEPTIONS */
+#endif /* __GPR_WINDOWS */
+#endif /* GRPC_ALLOW_EXCEPTIONS */
+
+/* Use GPR_LIKELY only in cases where you are sure that a certain outcome is the
+ * most likely. Ideally, also collect performance numbers to justify the claim.
+ */
+#ifdef __GNUC__
+#define GPR_LIKELY(x) __builtin_expect((x), 1)
+#define GPR_UNLIKELY(x) __builtin_expect((x), 0)
+#else /* __GNUC__ */
+#define GPR_LIKELY(x) (x)
+#define GPR_UNLIKELY(x) (x)
+#endif /* __GNUC__ */
+
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_PORT_PLATFORM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/propagation_bits.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/propagation_bits.h
new file mode 100644
index 0000000..824bdbd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/propagation_bits.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H
+#define GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Propagation bits: this can be bitwise or-ed to form propagation_mask for
+ * grpc_call */
+/** Propagate deadline */
+#define GRPC_PROPAGATE_DEADLINE ((uint32_t)1)
+/** Propagate census context */
+#define GRPC_PROPAGATE_CENSUS_STATS_CONTEXT ((uint32_t)2)
+#define GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT ((uint32_t)4)
+/** Propagate cancellation */
+#define GRPC_PROPAGATE_CANCELLATION ((uint32_t)8)
+
+/** Default propagation mask: clients of the core API are encouraged to encode
+   deltas from this in their implementations... ie write:
+   GRPC_PROPAGATE_DEFAULTS & ~GRPC_PROPAGATE_DEADLINE to disable deadline
+   propagation. Doing so gives flexibility in the future to define new
+   propagation types that are default inherited or not. */
+#define GRPC_PROPAGATE_DEFAULTS                                                \
+  ((uint32_t)((                                                                \
+      0xffff | GRPC_PROPAGATE_DEADLINE | GRPC_PROPAGATE_CENSUS_STATS_CONTEXT | \
+      GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT | GRPC_PROPAGATE_CANCELLATION)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/slice.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/slice.h
new file mode 100644
index 0000000..3567b1e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/slice.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SLICE_H
+#define GRPC_IMPL_CODEGEN_SLICE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/impl/codegen/gpr_slice.h>
+
+typedef struct grpc_slice grpc_slice;
+
+/** Slice API
+
+   A slice represents a contiguous reference counted array of bytes.
+   It is cheap to take references to a slice, and it is cheap to create a
+   slice pointing to a subset of another slice.
+
+   The data-structure for slices is exposed here to allow non-gpr code to
+   build slices from whatever data they have available.
+
+   When defining interfaces that handle slices, care should be taken to define
+   reference ownership semantics (who should call unref?) and mutability
+   constraints (is the callee allowed to modify the slice?) */
+
+/* Inlined half of grpc_slice is allowed to expand the size of the overall type
+   by this many bytes */
+#define GRPC_SLICE_INLINE_EXTRA_SIZE sizeof(void*)
+
+#define GRPC_SLICE_INLINED_SIZE \
+  (sizeof(size_t) + sizeof(uint8_t*) - 1 + GRPC_SLICE_INLINE_EXTRA_SIZE)
+
+struct grpc_slice_refcount;
+/** A grpc_slice s, if initialized, represents the byte range
+   s.bytes[0..s.length-1].
+
+   It can have an associated ref count which has a destruction routine to be run
+   when the ref count reaches zero (see grpc_slice_new() and grp_slice_unref()).
+   Multiple grpc_slice values may share a ref count.
+
+   If the slice does not have a refcount, it represents an inlined small piece
+   of data that is copied by value. */
+struct grpc_slice {
+  struct grpc_slice_refcount* refcount;
+  union grpc_slice_data {
+    struct grpc_slice_refcounted {
+      size_t length;
+      uint8_t* bytes;
+    } refcounted;
+    struct grpc_slice_inlined {
+      uint8_t length;
+      uint8_t bytes[GRPC_SLICE_INLINED_SIZE];
+    } inlined;
+  } data;
+};
+
+#define GRPC_SLICE_BUFFER_INLINE_ELEMENTS 8
+
+/** Represents an expandable array of slices, to be interpreted as a
+   single item. */
+typedef struct grpc_slice_buffer {
+  /** This is for internal use only. External users (i.e any code outside grpc
+   * core) MUST NOT use this field */
+  grpc_slice* base_slices;
+
+  /** slices in the array (Points to the first valid grpc_slice in the array) */
+  grpc_slice* slices;
+  /** the number of slices in the array */
+  size_t count;
+  /** the number of slices allocated in the array. External users (i.e any code
+   * outside grpc core) MUST NOT use this field */
+  size_t capacity;
+  /** the combined length of all slices in the array */
+  size_t length;
+  /** inlined elements to avoid allocations */
+  grpc_slice inlined[GRPC_SLICE_BUFFER_INLINE_ELEMENTS];
+} grpc_slice_buffer;
+
+#define GRPC_SLICE_START_PTR(slice)                 \
+  ((slice).refcount ? (slice).data.refcounted.bytes \
+                    : (slice).data.inlined.bytes)
+#define GRPC_SLICE_LENGTH(slice)                     \
+  ((slice).refcount ? (slice).data.refcounted.length \
+                    : (slice).data.inlined.length)
+#define GRPC_SLICE_SET_LENGTH(slice, newlen)                              \
+  ((slice).refcount ? ((slice).data.refcounted.length = (size_t)(newlen)) \
+                    : ((slice).data.inlined.length = (uint8_t)(newlen)))
+#define GRPC_SLICE_END_PTR(slice) \
+  GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
+#define GRPC_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
+
+#ifdef GRPC_ALLOW_GPR_SLICE_FUNCTIONS
+
+/* Duplicate GPR_* definitions */
+#define GPR_SLICE_START_PTR(slice)                  \
+  ((slice).refcount ? (slice).data.refcounted.bytes \
+                    : (slice).data.inlined.bytes)
+#define GPR_SLICE_LENGTH(slice)                      \
+  ((slice).refcount ? (slice).data.refcounted.length \
+                    : (slice).data.inlined.length)
+#define GPR_SLICE_SET_LENGTH(slice, newlen)                               \
+  ((slice).refcount ? ((slice).data.refcounted.length = (size_t)(newlen)) \
+                    : ((slice).data.inlined.length = (uint8_t)(newlen)))
+#define GPR_SLICE_END_PTR(slice) \
+  GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
+#define GPR_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
+
+#endif /* GRPC_ALLOW_GPR_SLICE_FUNCTIONS */
+
+#endif /* GRPC_IMPL_CODEGEN_SLICE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/status.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/status.h
new file mode 100644
index 0000000..dec3b8f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/status.h	
@@ -0,0 +1,154 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_STATUS_H
+#define GRPC_IMPL_CODEGEN_STATUS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  /** Not an error; returned on success */
+  GRPC_STATUS_OK = 0,
+
+  /** The operation was cancelled (typically by the caller). */
+  GRPC_STATUS_CANCELLED = 1,
+
+  /** Unknown error.  An example of where this error may be returned is
+     if a Status value received from another address space belongs to
+     an error-space that is not known in this address space.  Also
+     errors raised by APIs that do not return enough error information
+     may be converted to this error. */
+  GRPC_STATUS_UNKNOWN = 2,
+
+  /** Client specified an invalid argument.  Note that this differs
+     from FAILED_PRECONDITION.  INVALID_ARGUMENT indicates arguments
+     that are problematic regardless of the state of the system
+     (e.g., a malformed file name). */
+  GRPC_STATUS_INVALID_ARGUMENT = 3,
+
+  /** Deadline expired before operation could complete.  For operations
+     that change the state of the system, this error may be returned
+     even if the operation has completed successfully.  For example, a
+     successful response from a server could have been delayed long
+     enough for the deadline to expire. */
+  GRPC_STATUS_DEADLINE_EXCEEDED = 4,
+
+  /** Some requested entity (e.g., file or directory) was not found. */
+  GRPC_STATUS_NOT_FOUND = 5,
+
+  /** Some entity that we attempted to create (e.g., file or directory)
+     already exists. */
+  GRPC_STATUS_ALREADY_EXISTS = 6,
+
+  /** The caller does not have permission to execute the specified
+     operation.  PERMISSION_DENIED must not be used for rejections
+     caused by exhausting some resource (use RESOURCE_EXHAUSTED
+     instead for those errors).  PERMISSION_DENIED must not be
+     used if the caller can not be identified (use UNAUTHENTICATED
+     instead for those errors). */
+  GRPC_STATUS_PERMISSION_DENIED = 7,
+
+  /** The request does not have valid authentication credentials for the
+     operation. */
+  GRPC_STATUS_UNAUTHENTICATED = 16,
+
+  /** Some resource has been exhausted, perhaps a per-user quota, or
+     perhaps the entire file system is out of space. */
+  GRPC_STATUS_RESOURCE_EXHAUSTED = 8,
+
+  /** Operation was rejected because the system is not in a state
+     required for the operation's execution.  For example, directory
+     to be deleted may be non-empty, an rmdir operation is applied to
+     a non-directory, etc.
+
+     A litmus test that may help a service implementor in deciding
+     between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:
+      (a) Use UNAVAILABLE if the client can retry just the failing call.
+      (b) Use ABORTED if the client should retry at a higher-level
+          (e.g., restarting a read-modify-write sequence).
+      (c) Use FAILED_PRECONDITION if the client should not retry until
+          the system state has been explicitly fixed.  E.g., if an "rmdir"
+          fails because the directory is non-empty, FAILED_PRECONDITION
+          should be returned since the client should not retry unless
+          they have first fixed up the directory by deleting files from it.
+      (d) Use FAILED_PRECONDITION if the client performs conditional
+          REST Get/Update/Delete on a resource and the resource on the
+          server does not match the condition. E.g., conflicting
+          read-modify-write on the same resource. */
+  GRPC_STATUS_FAILED_PRECONDITION = 9,
+
+  /** The operation was aborted, typically due to a concurrency issue
+     like sequencer check failures, transaction aborts, etc.
+
+     See litmus test above for deciding between FAILED_PRECONDITION,
+     ABORTED, and UNAVAILABLE. */
+  GRPC_STATUS_ABORTED = 10,
+
+  /** Operation was attempted past the valid range.  E.g., seeking or
+     reading past end of file.
+
+     Unlike INVALID_ARGUMENT, this error indicates a problem that may
+     be fixed if the system state changes. For example, a 32-bit file
+     system will generate INVALID_ARGUMENT if asked to read at an
+     offset that is not in the range [0,2^32-1], but it will generate
+     OUT_OF_RANGE if asked to read from an offset past the current
+     file size.
+
+     There is a fair bit of overlap between FAILED_PRECONDITION and
+     OUT_OF_RANGE.  We recommend using OUT_OF_RANGE (the more specific
+     error) when it applies so that callers who are iterating through
+     a space can easily look for an OUT_OF_RANGE error to detect when
+     they are done. */
+  GRPC_STATUS_OUT_OF_RANGE = 11,
+
+  /** Operation is not implemented or not supported/enabled in this service. */
+  GRPC_STATUS_UNIMPLEMENTED = 12,
+
+  /** Internal errors.  Means some invariants expected by underlying
+     system has been broken.  If you see one of these errors,
+     something is very broken. */
+  GRPC_STATUS_INTERNAL = 13,
+
+  /** The service is currently unavailable.  This is a most likely a
+     transient condition and may be corrected by retrying with
+     a backoff. Note that it is not always safe to retry non-idempotent
+     operations.
+
+     WARNING: Although data MIGHT not have been transmitted when this
+     status occurs, there is NOT A GUARANTEE that the server has not seen
+     anything. So in general it is unsafe to retry on this status code
+     if the call is non-idempotent.
+
+     See litmus test above for deciding between FAILED_PRECONDITION,
+     ABORTED, and UNAVAILABLE. */
+  GRPC_STATUS_UNAVAILABLE = 14,
+
+  /** Unrecoverable data loss or corruption. */
+  GRPC_STATUS_DATA_LOSS = 15,
+
+  /** Force users to include a default branch: */
+  GRPC_STATUS__DO_NOT_USE = -1
+} grpc_status_code;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_STATUS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync.h
new file mode 100644
index 0000000..49e3194
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_H
+#define GRPC_IMPL_CODEGEN_SYNC_H
+/** Synchronization primitives for GPR.
+
+   The type  gpr_mu              provides a non-reentrant mutex (lock).
+
+   The type  gpr_cv              provides a condition variable.
+
+   The type  gpr_once            provides for one-time initialization.
+
+   The type gpr_event            provides one-time-setting, reading, and
+                                 waiting of a void*, with memory barriers.
+
+   The type gpr_refcount         provides an object reference counter,
+                                 with memory barriers suitable to control
+                                 object lifetimes.
+
+   The type gpr_stats_counter    provides an atomic statistics counter. It
+                                 provides no memory barriers.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Platform-specific type declarations of gpr_mu and gpr_cv.   */
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+#if defined(GPR_CUSTOM_SYNC)
+#include <grpc/impl/codegen/sync_custom.h>
+#elif defined(GPR_ABSEIL_SYNC)
+#include <grpc/impl/codegen/sync_abseil.h>
+#elif defined(GPR_POSIX_SYNC)
+#include <grpc/impl/codegen/sync_posix.h>
+#elif defined(GPR_WINDOWS)
+#include <grpc/impl/codegen/sync_windows.h>
+#else
+#error Unable to determine platform for sync
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_abseil.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_abseil.h
new file mode 100644
index 0000000..38dfab3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_abseil.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H
+#define GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+#ifdef GPR_ABSEIL_SYNC
+
+typedef intptr_t gpr_mu;
+typedef intptr_t gpr_cv;
+typedef int32_t gpr_once;
+
+#define GPR_ONCE_INIT 0
+
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_custom.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_custom.h
new file mode 100644
index 0000000..69b1bf6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_custom.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+#define GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+/* Users defining GPR_CUSTOM_SYNC need to define the following macros. */
+
+#ifdef GPR_CUSTOM_SYNC
+
+typedef GPR_CUSTOM_MU_TYPE gpr_mu;
+typedef GPR_CUSTOM_CV_TYPE gpr_cv;
+typedef GPR_CUSTOM_ONCE_TYPE gpr_once;
+
+#define GPR_ONCE_INIT GPR_CUSTOM_ONCE_INIT
+
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_generic.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_generic.h
new file mode 100644
index 0000000..eabdc51
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_generic.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_GENERIC_H
+#define GRPC_IMPL_CODEGEN_SYNC_GENERIC_H
+/* Generic type definitions for gpr_sync. */
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/atm.h>
+
+/* gpr_event */
+typedef struct {
+  gpr_atm state;
+} gpr_event;
+
+#define GPR_EVENT_INIT \
+  { 0 }
+
+/* gpr_refcount */
+typedef struct {
+  gpr_atm count;
+} gpr_refcount;
+
+/* gpr_stats_counter */
+typedef struct {
+  gpr_atm value;
+} gpr_stats_counter;
+
+#define GPR_STATS_INIT \
+  { 0 }
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_GENERIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_posix.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_posix.h
new file mode 100644
index 0000000..2aec3a3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_posix.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_POSIX_H
+#define GRPC_IMPL_CODEGEN_SYNC_POSIX_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+#include <pthread.h>
+
+#ifdef GRPC_ASAN_ENABLED
+/* The member |leak_checker| is used to check whether there is a memory leak
+ * caused by upper layer logic that's missing the |gpr_xx_destroy| call
+ * to the object before freeing it.
+ * This issue was reported at https://github.com/grpc/grpc/issues/17563
+ * and discussed at https://github.com/grpc/grpc/pull/17586
+ */
+typedef struct {
+  pthread_mutex_t mutex;
+  int* leak_checker;
+} gpr_mu;
+
+typedef struct {
+  pthread_cond_t cond_var;
+  int* leak_checker;
+} gpr_cv;
+#else
+typedef pthread_mutex_t gpr_mu;
+typedef pthread_cond_t gpr_cv;
+#endif
+typedef pthread_once_t gpr_once;
+
+#define GPR_ONCE_INIT PTHREAD_ONCE_INIT
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_windows.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_windows.h
new file mode 100644
index 0000000..ba5d5ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/impl/codegen/sync_windows.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H
+#define GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+typedef struct {
+  CRITICAL_SECTION cs; /* Not an SRWLock until Vista is unsupported */
+  int locked;
+} gpr_mu;
+
+typedef CONDITION_VARIABLE gpr_cv;
+
+typedef INIT_ONCE gpr_once;
+#define GPR_ONCE_INIT INIT_ONCE_STATIC_INIT
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/load_reporting.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/load_reporting.h
new file mode 100644
index 0000000..55f50ea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/load_reporting.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_LOAD_REPORTING_H
+#define GRPC_LOAD_REPORTING_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Metadata key for the gRPC LB load balancer token.
+ *
+ * The value corresponding to this key is an opaque token that is given to the
+ * frontend as part of each pick; the frontend sends this token to the backend
+ * in each request it sends when using that pick. The token is used by the
+ * backend to verify the request and to allow the backend to report load to the
+ * gRPC LB system. */
+#define GRPC_LB_TOKEN_MD_KEY "lb-token"
+
+/** Metadata key for gRPC LB cost reporting.
+ *
+ * The value corresponding to this key is an opaque binary blob reported by the
+ * backend as part of its trailing metadata containing cost information for the
+ * call. */
+#define GRPC_LB_COST_MD_KEY "lb-cost-bin"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_LOAD_REPORTING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/module.modulemap b/ChattingApp 000/Pods/gRPC-Core/include/grpc/module.modulemap
new file mode 100644
index 0000000..5e3b97e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/module.modulemap	
@@ -0,0 +1,79 @@
+
+framework module grpc {
+  umbrella header "grpc.h"
+
+  header "support/alloc.h"
+  header "support/atm.h"
+  header "support/cpu.h"
+  header "support/log.h"
+  header "support/log_windows.h"
+  header "support/port_platform.h"
+  header "support/string_util.h"
+  header "support/sync.h"
+  header "support/sync_abseil.h"
+  header "support/sync_generic.h"
+  header "support/thd_id.h"
+  header "support/time.h"
+  header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
+  header "impl/codegen/gpr_slice.h"
+  header "impl/codegen/gpr_types.h"
+  header "impl/codegen/log.h"
+  header "impl/codegen/port_platform.h"
+  header "impl/codegen/sync.h"
+  header "impl/codegen/sync_abseil.h"
+  header "impl/codegen/sync_generic.h"
+  header "impl/codegen/byte_buffer.h"
+  header "impl/codegen/byte_buffer_reader.h"
+  header "impl/codegen/compression_types.h"
+  header "impl/codegen/connectivity_state.h"
+  header "impl/codegen/grpc_types.h"
+  header "impl/codegen/propagation_bits.h"
+  header "impl/codegen/slice.h"
+  header "impl/codegen/status.h"
+  header "impl/codegen/atm.h"
+  header "impl/codegen/fork.h"
+  header "impl/codegen/gpr_slice.h"
+  header "impl/codegen/gpr_types.h"
+  header "impl/codegen/log.h"
+  header "impl/codegen/port_platform.h"
+  header "impl/codegen/sync.h"
+  header "impl/codegen/sync_abseil.h"
+  header "impl/codegen/sync_generic.h"
+  header "grpc_security.h"
+  header "byte_buffer.h"
+  header "byte_buffer_reader.h"
+  header "compression.h"
+  header "fork.h"
+  header "grpc.h"
+  header "grpc_posix.h"
+  header "grpc_security_constants.h"
+  header "load_reporting.h"
+  header "slice.h"
+  header "slice_buffer.h"
+  header "status.h"
+  header "support/workaround_list.h"
+  header "census.h"
+
+  textual header "support/atm_gcc_atomic.h"
+  textual header "support/atm_gcc_sync.h"
+  textual header "support/atm_windows.h"
+  textual header "support/sync_custom.h"
+  textual header "support/sync_posix.h"
+  textual header "support/sync_windows.h"
+  textual header "impl/codegen/atm_gcc_atomic.h"
+  textual header "impl/codegen/atm_gcc_sync.h"
+  textual header "impl/codegen/atm_windows.h"
+  textual header "impl/codegen/sync_custom.h"
+  textual header "impl/codegen/sync_posix.h"
+  textual header "impl/codegen/sync_windows.h"
+  textual header "impl/codegen/atm_gcc_atomic.h"
+  textual header "impl/codegen/atm_gcc_sync.h"
+  textual header "impl/codegen/atm_windows.h"
+  textual header "impl/codegen/sync_custom.h"
+  textual header "impl/codegen/sync_posix.h"
+  textual header "impl/codegen/sync_windows.h"
+
+  export *
+  module * { export * }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice.h
new file mode 100644
index 0000000..51fc62b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice.h	
@@ -0,0 +1,172 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SLICE_H
+#define GRPC_SLICE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/support/sync.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Increment the refcount of s. Requires slice is initialized.
+   Returns s. */
+GPRAPI grpc_slice grpc_slice_ref(grpc_slice s);
+
+/** Decrement the ref count of s.  If the ref count of s reaches zero, all
+   slices sharing the ref count are destroyed, and considered no longer
+   initialized.  If s is ultimately derived from a call to grpc_slice_new(start,
+   len, dest) where dest!=NULL , then (*dest)(start) is called, else if s is
+   ultimately derived from a call to grpc_slice_new_with_len(start, len, dest)
+   where dest!=NULL , then (*dest)(start, len).  Requires s initialized.  */
+GPRAPI void grpc_slice_unref(grpc_slice s);
+
+/** Copy slice - create a new slice that contains the same data as s */
+GPRAPI grpc_slice grpc_slice_copy(grpc_slice s);
+
+/** Create a slice pointing at some data. Calls malloc to allocate a refcount
+   for the object, and arranges that destroy will be called with the pointer
+   passed in at destruction. */
+GPRAPI grpc_slice grpc_slice_new(void* p, size_t len, void (*destroy)(void*));
+
+/** Equivalent to grpc_slice_new, but with a separate pointer that is
+   passed to the destroy function.  This function can be useful when
+   the data is part of a larger structure that must be destroyed when
+   the data is no longer needed. */
+GPRAPI grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
+                                                void (*destroy)(void*),
+                                                void* user_data);
+
+/** Equivalent to grpc_slice_new, but with a two argument destroy function that
+   also takes the slice length. */
+GPRAPI grpc_slice grpc_slice_new_with_len(void* p, size_t len,
+                                          void (*destroy)(void*, size_t));
+
+/** Equivalent to grpc_slice_new(malloc(len), len, free), but saves one malloc()
+   call.
+   Aborts if malloc() fails. */
+GPRAPI grpc_slice grpc_slice_malloc(size_t length);
+GPRAPI grpc_slice grpc_slice_malloc_large(size_t length);
+
+#define GRPC_SLICE_MALLOC(len) grpc_slice_malloc(len)
+
+/** Intern a slice:
+
+   The return value for two invocations of this function with  the same sequence
+   of bytes is a slice which points to the same memory. */
+GPRAPI grpc_slice grpc_slice_intern(grpc_slice slice);
+
+/** Create a slice by copying a string.
+   Does not preserve null terminators.
+   Equivalent to:
+     size_t len = strlen(source);
+     grpc_slice slice = grpc_slice_malloc(len);
+     memcpy(slice->data, source, len); */
+GPRAPI grpc_slice grpc_slice_from_copied_string(const char* source);
+
+/** Create a slice by copying a buffer.
+   Equivalent to:
+     grpc_slice slice = grpc_slice_malloc(len);
+     memcpy(slice->data, source, len); */
+GPRAPI grpc_slice grpc_slice_from_copied_buffer(const char* source, size_t len);
+
+/** Create a slice pointing to constant memory */
+GPRAPI grpc_slice grpc_slice_from_static_string(const char* source);
+
+/** Create a slice pointing to constant memory */
+GPRAPI grpc_slice grpc_slice_from_static_buffer(const void* source, size_t len);
+
+/** Return a result slice derived from s, which shares a ref count with \a s,
+   where result.data==s.data+begin, and result.length==end-begin. The ref count
+   of \a s is increased by one. Do not assign result back to \a s.
+   Requires s initialized, begin <= end, begin <= s.length, and
+   end <= source->length. */
+GPRAPI grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end);
+
+/** The same as grpc_slice_sub, but without altering the ref count */
+GPRAPI grpc_slice grpc_slice_sub_no_ref(grpc_slice s, size_t begin, size_t end);
+
+/** Splits s into two: modifies s to be s[0:split], and returns a new slice,
+   sharing a refcount with s, that contains s[split:s.length].
+   Requires s initialized, split <= s.length */
+GPRAPI grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split);
+
+typedef enum {
+  GRPC_SLICE_REF_TAIL = 1,
+  GRPC_SLICE_REF_HEAD = 2,
+  GRPC_SLICE_REF_BOTH = 1 + 2
+} grpc_slice_ref_whom;
+
+/** The same as grpc_slice_split_tail, but with an option to skip altering
+ * refcounts (grpc_slice_split_tail_maybe_ref(..., true) is equivalent to
+ * grpc_slice_split_tail(...)) */
+GPRAPI grpc_slice grpc_slice_split_tail_maybe_ref(grpc_slice* s, size_t split,
+                                                  grpc_slice_ref_whom ref_whom);
+
+/** Splits s into two: modifies s to be s[split:s.length], and returns a new
+   slice, sharing a refcount with s, that contains s[0:split].
+   Requires s initialized, split <= s.length */
+GPRAPI grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split);
+
+GPRAPI grpc_slice grpc_empty_slice(void);
+
+GPRAPI uint32_t grpc_slice_default_hash_impl(grpc_slice s);
+GPRAPI int grpc_slice_default_eq_impl(grpc_slice a, grpc_slice b);
+
+GPRAPI int grpc_slice_eq(grpc_slice a, grpc_slice b);
+
+/** Returns <0 if a < b, ==0 if a == b, >0 if a > b
+   The order is arbitrary, and is not guaranteed to be stable across different
+   versions of the API. */
+GPRAPI int grpc_slice_cmp(grpc_slice a, grpc_slice b);
+GPRAPI int grpc_slice_str_cmp(grpc_slice a, const char* b);
+
+/** return non-zero if the first blen bytes of a are equal to b */
+GPRAPI int grpc_slice_buf_start_eq(grpc_slice a, const void* b, size_t blen);
+
+/** return the index of the last instance of \a c in \a s, or -1 if not found */
+GPRAPI int grpc_slice_rchr(grpc_slice s, char c);
+GPRAPI int grpc_slice_chr(grpc_slice s, char c);
+
+/** return the index of the first occurrence of \a needle in \a haystack, or -1
+   if it's not found */
+GPRAPI int grpc_slice_slice(grpc_slice haystack, grpc_slice needle);
+
+GPRAPI uint32_t grpc_slice_hash(grpc_slice s);
+
+/** Do two slices point at the same memory, with the same length
+   If a or b is inlined, actually compares data */
+GPRAPI int grpc_slice_is_equivalent(grpc_slice a, grpc_slice b);
+
+/** Return a slice pointing to newly allocated memory that has the same contents
+ * as \a s */
+GPRAPI grpc_slice grpc_slice_dup(grpc_slice a);
+
+/** Return a copy of slice as a C string. Offers no protection against embedded
+   NULL's. Returned string must be freed with gpr_free. */
+GPRAPI char* grpc_slice_to_c_string(grpc_slice s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SLICE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice_buffer.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice_buffer.h
new file mode 100644
index 0000000..3260019
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/slice_buffer.h	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SLICE_BUFFER_H
+#define GRPC_SLICE_BUFFER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** initialize a slice buffer */
+GPRAPI void grpc_slice_buffer_init(grpc_slice_buffer* sb);
+/** destroy a slice buffer - unrefs any held elements */
+GPRAPI void grpc_slice_buffer_destroy(grpc_slice_buffer* sb);
+/** Add an element to a slice buffer - takes ownership of the slice.
+   This function is allowed to concatenate the passed in slice to the end of
+   some other slice if desired by the slice buffer. */
+GPRAPI void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice slice);
+/** add an element to a slice buffer - takes ownership of the slice and returns
+   the index of the slice.
+   Guarantees that the slice will not be concatenated at the end of another
+   slice (i.e. the data for this slice will begin at the first byte of the
+   slice at the returned index in sb->slices)
+   The implementation MAY decide to concatenate data at the end of a small
+   slice added in this fashion. */
+GPRAPI size_t grpc_slice_buffer_add_indexed(grpc_slice_buffer* sb,
+                                            grpc_slice slice);
+GPRAPI void grpc_slice_buffer_addn(grpc_slice_buffer* sb, grpc_slice* slices,
+                                   size_t n);
+/** add a very small (less than 8 bytes) amount of data to the end of a slice
+   buffer: returns a pointer into which to add the data */
+GPRAPI uint8_t* grpc_slice_buffer_tiny_add(grpc_slice_buffer* sb, size_t len);
+/** pop the last buffer, but don't unref it */
+GPRAPI void grpc_slice_buffer_pop(grpc_slice_buffer* sb);
+/** clear a slice buffer, unref all elements */
+GPRAPI void grpc_slice_buffer_reset_and_unref(grpc_slice_buffer* sb);
+/** swap the contents of two slice buffers */
+GPRAPI void grpc_slice_buffer_swap(grpc_slice_buffer* a, grpc_slice_buffer* b);
+/** move all of the elements of src into dst */
+GPRAPI void grpc_slice_buffer_move_into(grpc_slice_buffer* src,
+                                        grpc_slice_buffer* dst);
+/** remove n bytes from the end of a slice buffer */
+GPRAPI void grpc_slice_buffer_trim_end(grpc_slice_buffer* src, size_t n,
+                                       grpc_slice_buffer* garbage);
+/** move the first n bytes of src into dst */
+GPRAPI void grpc_slice_buffer_move_first(grpc_slice_buffer* src, size_t n,
+                                         grpc_slice_buffer* dst);
+/** move the first n bytes of src into dst without adding references */
+GPRAPI void grpc_slice_buffer_move_first_no_ref(grpc_slice_buffer* src,
+                                                size_t n,
+                                                grpc_slice_buffer* dst);
+/** move the first n bytes of src into dst (copying them) */
+GPRAPI void grpc_slice_buffer_move_first_into_buffer(grpc_slice_buffer* src,
+                                                     size_t n, void* dst);
+/** take the first slice in the slice buffer */
+GPRAPI grpc_slice grpc_slice_buffer_take_first(grpc_slice_buffer* src);
+/** undo the above with (a possibly different) \a slice */
+GPRAPI void grpc_slice_buffer_undo_take_first(grpc_slice_buffer* src,
+                                              grpc_slice slice);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SLICE_BUFFER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/status.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/status.h
new file mode 100644
index 0000000..ecb9668
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/status.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_STATUS_H
+#define GRPC_STATUS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/status.h>
+
+#endif /* GRPC_STATUS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/alloc.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/alloc.h
new file mode 100644
index 0000000..d440e4b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/alloc.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_ALLOC_H
+#define GRPC_SUPPORT_ALLOC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** malloc.
+ * If size==0, always returns NULL. Otherwise this function never returns NULL.
+ * The pointer returned is suitably aligned for any kind of variable it could
+ * contain.
+ */
+GPRAPI void* gpr_malloc(size_t size);
+/** like malloc, but zero all bytes before returning them */
+GPRAPI void* gpr_zalloc(size_t size);
+/** free */
+GPRAPI void gpr_free(void* ptr);
+/** realloc, never returns NULL */
+GPRAPI void* gpr_realloc(void* p, size_t size);
+/** aligned malloc, never returns NULL, will align to alignment, which
+ * must be a power of 2. */
+GPRAPI void* gpr_malloc_aligned(size_t size, size_t alignment);
+/** free memory allocated by gpr_malloc_aligned */
+GPRAPI void gpr_free_aligned(void* ptr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SUPPORT_ALLOC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm.h
new file mode 100644
index 0000000..073b0a6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_ATM_H
+#define GRPC_SUPPORT_ATM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/atm.h>
+
+#endif /* GRPC_SUPPORT_ATM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_atomic.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_atomic.h
new file mode 100644
index 0000000..ae603db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_atomic.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_ATM_GCC_ATOMIC_H
+#define GRPC_SUPPORT_ATM_GCC_ATOMIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/atm_gcc_atomic.h>
+
+#endif /* GRPC_SUPPORT_ATM_GCC_ATOMIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_sync.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_sync.h
new file mode 100644
index 0000000..6f51fdb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_gcc_sync.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_ATM_GCC_SYNC_H
+#define GRPC_SUPPORT_ATM_GCC_SYNC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/atm_gcc_sync.h>
+
+#endif /* GRPC_SUPPORT_ATM_GCC_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_windows.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_windows.h
new file mode 100644
index 0000000..36955e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/atm_windows.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_ATM_WINDOWS_H
+#define GRPC_SUPPORT_ATM_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/atm_windows.h>
+
+#endif /* GRPC_SUPPORT_ATM_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/cpu.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/cpu.h
new file mode 100644
index 0000000..f0e898e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/cpu.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_CPU_H
+#define GRPC_SUPPORT_CPU_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Interface providing CPU information for currently running system */
+
+/** Return the number of CPU cores on the current system. Will return 0 if
+   the information is not available. */
+GPRAPI unsigned gpr_cpu_num_cores(void);
+
+/** Return the CPU on which the current thread is executing; N.B. This should
+   be considered advisory only - it is possible that the thread is switched
+   to a different CPU at any time. Returns a value in range
+   [0, gpr_cpu_num_cores() - 1] */
+GPRAPI unsigned gpr_cpu_current_cpu(void);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif /* GRPC_SUPPORT_CPU_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log.h
new file mode 100644
index 0000000..8d8742b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_LOG_H
+#define GRPC_SUPPORT_LOG_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/log.h>
+
+#endif /* GRPC_SUPPORT_LOG_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log_windows.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log_windows.h
new file mode 100644
index 0000000..e833f9d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/log_windows.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_LOG_WINDOWS_H
+#define GRPC_SUPPORT_LOG_WINDOWS_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Returns a string allocated with gpr_malloc that contains a UTF-8
+ * formatted error message, corresponding to the error messageid.
+ * Use in conjunction with GetLastError() et al.
+ */
+GPRAPI char* gpr_format_message(int messageid);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SUPPORT_LOG_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/port_platform.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/port_platform.h
new file mode 100644
index 0000000..26025dc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/port_platform.h	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_PORT_PLATFORM_H
+#define GRPC_SUPPORT_PORT_PLATFORM_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#endif /* GRPC_SUPPORT_PORT_PLATFORM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/string_util.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/string_util.h
new file mode 100644
index 0000000..2679160
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/string_util.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_STRING_UTIL_H
+#define GRPC_SUPPORT_STRING_UTIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** String utility functions */
+
+/** Returns a copy of src that can be passed to gpr_free().
+   If allocation fails or if src is NULL, returns NULL. */
+GPRAPI char* gpr_strdup(const char* src);
+
+/** printf to a newly-allocated string.  The set of supported formats may vary
+   between platforms.
+
+   On success, returns the number of bytes printed (excluding the final '\0'),
+   and *strp points to a string which must later be destroyed with gpr_free().
+
+   On error, returns -1 and sets *strp to NULL. If the format string is bad,
+   the result is undefined. */
+GPRAPI int gpr_asprintf(char** strp, const char* format, ...)
+    GPR_PRINT_FORMAT_CHECK(2, 3);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SUPPORT_STRING_UTIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync.h
new file mode 100644
index 0000000..da820de
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync.h	
@@ -0,0 +1,282 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_H
+#define GRPC_SUPPORT_SYNC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h> /* for gpr_timespec */
+#include <grpc/impl/codegen/sync.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** --- Mutex interface ---
+
+   At most one thread may hold an exclusive lock on a mutex at any given time.
+   Actions taken by a thread that holds a mutex exclusively happen after
+   actions taken by all previous holders of the mutex.  Variables of type
+   gpr_mu are uninitialized when first declared.  */
+
+/** Initialize *mu.  Requires:  *mu uninitialized.  */
+GPRAPI void gpr_mu_init(gpr_mu* mu);
+
+/** Cause *mu no longer to be initialized, freeing any memory in use.  Requires:
+ *mu initialized; no other concurrent operation on *mu.  */
+GPRAPI void gpr_mu_destroy(gpr_mu* mu);
+
+/** Wait until no thread has a lock on *mu, cause the calling thread to own an
+   exclusive lock on *mu, then return.  May block indefinitely or crash if the
+   calling thread has a lock on *mu.  Requires:  *mu initialized.  */
+GPRAPI void gpr_mu_lock(gpr_mu* mu);
+
+/** Release an exclusive lock on *mu held by the calling thread.  Requires:  *mu
+   initialized; the calling thread holds an exclusive lock on *mu.  */
+GPRAPI void gpr_mu_unlock(gpr_mu* mu);
+
+/** Without blocking, attempt to acquire an exclusive lock on *mu for the
+   calling thread, then return non-zero iff success.  Fail, if any thread holds
+   the lock; succeeds with high probability if no thread holds the lock.
+   Requires:  *mu initialized.  */
+GPRAPI int gpr_mu_trylock(gpr_mu* mu);
+
+/** --- Condition variable interface ---
+
+   A while-loop should be used with gpr_cv_wait() when waiting for conditions
+   to become true.  See the example below.  Variables of type gpr_cv are
+   uninitialized when first declared.  */
+
+/** Initialize *cv.  Requires:  *cv uninitialized.  */
+GPRAPI void gpr_cv_init(gpr_cv* cv);
+
+/** Cause *cv no longer to be initialized, freeing any memory in use.  Requires:
+ *cv initialized; no other concurrent operation on *cv.*/
+GPRAPI void gpr_cv_destroy(gpr_cv* cv);
+
+/** Atomically release *mu and wait on *cv.  When the calling thread is woken
+   from *cv or the deadline abs_deadline is exceeded, execute gpr_mu_lock(mu)
+   and return whether the deadline was exceeded.  Use
+   abs_deadline==gpr_inf_future for no deadline.  abs_deadline can be either
+   an absolute deadline, or a GPR_TIMESPAN.  May return even when not
+   woken explicitly.  Requires:  *mu and *cv initialized; the calling thread
+   holds an exclusive lock on *mu.  */
+GPRAPI int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline);
+
+/** If any threads are waiting on *cv, wake at least one.
+   Clients may treat this as an optimization of gpr_cv_broadcast()
+   for use in the case where waking more than one waiter is not useful.
+   Requires:  *cv initialized.  */
+GPRAPI void gpr_cv_signal(gpr_cv* cv);
+
+/** Wake all threads waiting on *cv.  Requires:  *cv initialized.  */
+GPRAPI void gpr_cv_broadcast(gpr_cv* cv);
+
+/** --- One-time initialization ---
+
+   gpr_once must be declared with static storage class, and initialized with
+   GPR_ONCE_INIT.  e.g.,
+     static gpr_once once_var = GPR_ONCE_INIT;     */
+
+/** Ensure that (*init_routine)() has been called exactly once (for the
+   specified gpr_once instance) and then return.
+   If multiple threads call gpr_once() on the same gpr_once instance, one of
+   them will call (*init_routine)(), and the others will block until that call
+   finishes.*/
+GPRAPI void gpr_once_init(gpr_once* once, void (*init_routine)(void));
+
+/** --- One-time event notification ---
+
+  These operations act on a gpr_event, which should be initialized with
+  gpr_ev_init(), or with GPR_EVENT_INIT if static, e.g.,
+       static gpr_event event_var = GPR_EVENT_INIT;
+  It requires no destruction.  */
+
+/** Initialize *ev. */
+GPRAPI void gpr_event_init(gpr_event* ev);
+
+/** Set *ev so that gpr_event_get() and gpr_event_wait() will return value.
+   Requires:  *ev initialized; value != NULL; no prior or concurrent calls to
+   gpr_event_set(ev, ...) since initialization.  */
+GPRAPI void gpr_event_set(gpr_event* ev, void* value);
+
+/** Return the value set by gpr_event_set(ev, ...), or NULL if no such call has
+   completed.  If the result is non-NULL, all operations that occurred prior to
+   the gpr_event_set(ev, ...) set will be visible after this call returns.
+   Requires:  *ev initialized.  This operation is faster than acquiring a mutex
+   on most platforms.  */
+GPRAPI void* gpr_event_get(gpr_event* ev);
+
+/** Wait until *ev is set by gpr_event_set(ev, ...), or abs_deadline is
+   exceeded, then return gpr_event_get(ev).  Requires:  *ev initialized.  Use
+   abs_deadline==gpr_inf_future for no deadline.  When the event has been
+   signalled before the call, this operation is faster than acquiring a mutex
+   on most platforms.  */
+GPRAPI void* gpr_event_wait(gpr_event* ev, gpr_timespec abs_deadline);
+
+/** --- Reference counting ---
+
+   These calls act on the type gpr_refcount.  It requires no destruction.  */
+
+/** Initialize *r to value n.  */
+GPRAPI void gpr_ref_init(gpr_refcount* r, int n);
+
+/** Increment the reference count *r.  Requires *r initialized. */
+GPRAPI void gpr_ref(gpr_refcount* r);
+
+/** Increment the reference count *r.  Requires *r initialized.
+   Crashes if refcount is zero */
+GPRAPI void gpr_ref_non_zero(gpr_refcount* r);
+
+/** Increment the reference count *r by n.  Requires *r initialized, n > 0. */
+GPRAPI void gpr_refn(gpr_refcount* r, int n);
+
+/** Decrement the reference count *r and return non-zero iff it has reached
+   zero. .  Requires *r initialized. */
+GPRAPI int gpr_unref(gpr_refcount* r);
+
+/** Return non-zero iff the reference count of *r is one, and thus is owned
+   by exactly one object. */
+GPRAPI int gpr_ref_is_unique(gpr_refcount* r);
+
+/** --- Stats counters ---
+
+   These calls act on the integral type gpr_stats_counter.  It requires no
+   destruction.  Static instances may be initialized with
+       gpr_stats_counter c = GPR_STATS_INIT;
+   Beware:  These operations do not imply memory barriers.  Do not use them to
+   synchronize other events.  */
+
+/** Initialize *c to the value n. */
+GPRAPI void gpr_stats_init(gpr_stats_counter* c, intptr_t n);
+
+/** *c += inc.  Requires: *c initialized. */
+GPRAPI void gpr_stats_inc(gpr_stats_counter* c, intptr_t inc);
+
+/** Return *c.  Requires: *c initialized. */
+GPRAPI intptr_t gpr_stats_read(const gpr_stats_counter* c);
+
+/** ==================Example use of interface===================
+   A producer-consumer queue of up to N integers,
+   illustrating the use of the calls in this interface. */
+#if 0
+
+#define N 4
+
+   typedef struct queue {
+     gpr_cv non_empty;  /* Signalled when length becomes non-zero. */
+     gpr_cv non_full;   /* Signalled when length becomes non-N. */
+     gpr_mu mu;         /* Protects all fields below.
+                            (That is, except during initialization or
+                            destruction, the fields below should be accessed
+                            only by a thread that holds mu.) */
+     int head;           /* Index of head of queue 0..N-1. */
+     int length;         /* Number of valid elements in queue 0..N. */
+     int elem[N];        /* elem[head .. head+length-1] are queue elements. */
+   } queue;
+
+   /* Initialize *q. */
+   void queue_init(queue *q) {
+     gpr_mu_init(&q->mu);
+     gpr_cv_init(&q->non_empty);
+     gpr_cv_init(&q->non_full);
+     q->head = 0;
+     q->length = 0;
+   }
+
+   /* Free storage associated with *q. */
+   void queue_destroy(queue *q) {
+     gpr_mu_destroy(&q->mu);
+     gpr_cv_destroy(&q->non_empty);
+     gpr_cv_destroy(&q->non_full);
+   }
+
+   /* Wait until there is room in *q, then append x to *q. */
+   void queue_append(queue *q, int x) {
+     gpr_mu_lock(&q->mu);
+     /* To wait for a predicate without a deadline, loop on the negation of the
+        predicate, and use gpr_cv_wait(..., gpr_inf_future) inside the loop
+        to release the lock, wait, and reacquire on each iteration.  Code that
+        makes the condition true should use gpr_cv_broadcast() on the
+        corresponding condition variable.  The predicate must be on state
+        protected by the lock.  */
+     while (q->length == N) {
+       gpr_cv_wait(&q->non_full, &q->mu, gpr_inf_future);
+     }
+     if (q->length == 0) {  /* Wake threads blocked in queue_remove(). */
+       /* It's normal to use gpr_cv_broadcast() or gpr_signal() while
+          holding the lock. */
+       gpr_cv_broadcast(&q->non_empty);
+     }
+     q->elem[(q->head + q->length) % N] = x;
+     q->length++;
+     gpr_mu_unlock(&q->mu);
+   }
+
+   /* If it can be done without blocking, append x to *q and return non-zero.
+      Otherwise return 0. */
+   int queue_try_append(queue *q, int x) {
+     int result = 0;
+     if (gpr_mu_trylock(&q->mu)) {
+       if (q->length != N) {
+         if (q->length == 0) {  /* Wake threads blocked in queue_remove(). */
+           gpr_cv_broadcast(&q->non_empty);
+         }
+         q->elem[(q->head + q->length) % N] = x;
+         q->length++;
+         result = 1;
+       }
+       gpr_mu_unlock(&q->mu);
+     }
+     return result;
+   }
+
+   /* Wait until the *q is non-empty or deadline abs_deadline passes.  If the
+      queue is non-empty, remove its head entry, place it in *head, and return
+      non-zero.  Otherwise return 0.  */
+   int queue_remove(queue *q, int *head, gpr_timespec abs_deadline) {
+     int result = 0;
+     gpr_mu_lock(&q->mu);
+     /* To wait for a predicate with a deadline, loop on the negation of the
+        predicate or until gpr_cv_wait() returns true.  Code that makes
+        the condition true should use gpr_cv_broadcast() on the corresponding
+        condition variable.  The predicate must be on state protected by the
+        lock. */
+     while (q->length == 0 &&
+            !gpr_cv_wait(&q->non_empty, &q->mu, abs_deadline)) {
+     }
+     if (q->length != 0) {    /* Queue is non-empty. */
+       result = 1;
+       if (q->length == N) {  /* Wake threads blocked in queue_append(). */
+         gpr_cv_broadcast(&q->non_full);
+       }
+       *head = q->elem[q->head];
+       q->head = (q->head + 1) % N;
+       q->length--;
+     } /* else deadline exceeded */
+     gpr_mu_unlock(&q->mu);
+     return result;
+   }
+#endif /* 0 */
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif /* GRPC_SUPPORT_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_abseil.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_abseil.h
new file mode 100644
index 0000000..3ee7348
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_abseil.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_ABSEIL_H
+#define GRPC_SUPPORT_SYNC_ABSEIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/sync_abseil.h>
+
+#endif /* GRPC_SUPPORT_SYNC_ABSEIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_custom.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_custom.h
new file mode 100644
index 0000000..27cf0e0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_custom.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_CUSTOM_H
+#define GRPC_SUPPORT_SYNC_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/sync_custom.h>
+
+#endif /* GRPC_SUPPORT_SYNC_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_generic.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_generic.h
new file mode 100644
index 0000000..93028c4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_generic.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_GENERIC_H
+#define GRPC_SUPPORT_SYNC_GENERIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+#endif /* GRPC_SUPPORT_SYNC_GENERIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_posix.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_posix.h
new file mode 100644
index 0000000..3dce7ee
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_posix.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_POSIX_H
+#define GRPC_SUPPORT_SYNC_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/sync_posix.h>
+
+#endif /* GRPC_SUPPORT_SYNC_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_windows.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_windows.h
new file mode 100644
index 0000000..a493c86
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/sync_windows.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_SYNC_WINDOWS_H
+#define GRPC_SUPPORT_SYNC_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/sync_windows.h>
+
+#endif /* GRPC_SUPPORT_SYNC_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/thd_id.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/thd_id.h
new file mode 100644
index 0000000..e9b2b7e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/thd_id.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_THD_ID_H
+#define GRPC_SUPPORT_THD_ID_H
+/** Thread ID interface for GPR.
+
+   Used by some wrapped languages for logging purposes.
+
+   Types
+        gpr_thd_id        a unique opaque identifier for a thread.
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uintptr_t gpr_thd_id;
+
+/** Returns the identifier of the current thread. */
+GPRAPI gpr_thd_id gpr_thd_currentid(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SUPPORT_THD_ID_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/time.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/time.h
new file mode 100644
index 0000000..550ffc2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/time.h	
@@ -0,0 +1,92 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_TIME_H
+#define GRPC_SUPPORT_TIME_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+
+#include <stddef.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Time constants. */
+GPRAPI gpr_timespec
+gpr_time_0(gpr_clock_type type); /** The zero time interval. */
+GPRAPI gpr_timespec gpr_inf_future(gpr_clock_type type); /** The far future */
+GPRAPI gpr_timespec gpr_inf_past(gpr_clock_type type);   /** The far past. */
+
+#define GPR_MS_PER_SEC 1000
+#define GPR_US_PER_SEC 1000000
+#define GPR_NS_PER_SEC 1000000000
+#define GPR_NS_PER_MS 1000000
+#define GPR_NS_PER_US 1000
+#define GPR_US_PER_MS 1000
+
+/** initialize time subsystem */
+GPRAPI void gpr_time_init(void);
+
+/** Return the current time measured from the given clocks epoch. */
+GPRAPI gpr_timespec gpr_now(gpr_clock_type clock);
+
+/** Convert a timespec from one clock to another */
+GPRAPI gpr_timespec gpr_convert_clock_type(gpr_timespec t,
+                                           gpr_clock_type target_clock);
+
+/** Return -ve, 0, or +ve according to whether a < b, a == b, or a > b
+   respectively.  */
+GPRAPI int gpr_time_cmp(gpr_timespec a, gpr_timespec b);
+
+GPRAPI gpr_timespec gpr_time_max(gpr_timespec a, gpr_timespec b);
+GPRAPI gpr_timespec gpr_time_min(gpr_timespec a, gpr_timespec b);
+
+/** Add and subtract times.  Calculations saturate at infinities. */
+GPRAPI gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b);
+GPRAPI gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b);
+
+/** Return a timespec representing a given number of time units. INT64_MIN is
+   interpreted as gpr_inf_past, and INT64_MAX as gpr_inf_future.  */
+GPRAPI gpr_timespec gpr_time_from_micros(int64_t x, gpr_clock_type clock_type);
+GPRAPI gpr_timespec gpr_time_from_nanos(int64_t x, gpr_clock_type clock_type);
+GPRAPI gpr_timespec gpr_time_from_millis(int64_t x, gpr_clock_type clock_type);
+GPRAPI gpr_timespec gpr_time_from_seconds(int64_t x, gpr_clock_type clock_type);
+GPRAPI gpr_timespec gpr_time_from_minutes(int64_t x, gpr_clock_type clock_type);
+GPRAPI gpr_timespec gpr_time_from_hours(int64_t x, gpr_clock_type clock_type);
+
+GPRAPI int32_t gpr_time_to_millis(gpr_timespec timespec);
+
+/** Return 1 if two times are equal or within threshold of each other,
+   0 otherwise */
+GPRAPI int gpr_time_similar(gpr_timespec a, gpr_timespec b,
+                            gpr_timespec threshold);
+
+/** Sleep until at least 'until' - an absolute timeout */
+GPRAPI void gpr_sleep_until(gpr_timespec until);
+
+GPRAPI double gpr_timespec_to_micros(gpr_timespec t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_SUPPORT_TIME_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/workaround_list.h b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/workaround_list.h
new file mode 100644
index 0000000..e28dfa1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/include/grpc/support/workaround_list.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_SUPPORT_WORKAROUND_LIST_H
+#define GRPC_SUPPORT_WORKAROUND_LIST_H
+
+/* The list of IDs of server workarounds currently maintained by gRPC. For
+ * explanation and detailed descriptions of workarounds, see
+ * /doc/workarounds.md
+ */
+typedef enum {
+  GRPC_WORKAROUND_ID_CRONET_COMPRESSION = 0,
+  GRPC_MAX_WORKAROUND_ID
+} grpc_workaround_list;
+
+#endif /* GRPC_SUPPORT_WORKAROUND_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/census/grpc_context.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/census/grpc_context.cc
new file mode 100644
index 0000000..599a798
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/census/grpc_context.cc	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/census.h>
+#include <grpc/grpc.h>
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+
+void grpc_census_call_set_context(grpc_call* call, census_context* context) {
+  GRPC_API_TRACE("grpc_census_call_set_context(call=%p, census_context=%p)", 2,
+                 (call, context));
+  if (context != nullptr) {
+    grpc_call_context_set(call, GRPC_CONTEXT_TRACING, context, nullptr);
+  }
+}
+
+census_context* grpc_census_call_get_context(grpc_call* call) {
+  GRPC_API_TRACE("grpc_census_call_get_context(call=%p)", 1, (call));
+  return static_cast<census_context*>(
+      grpc_call_context_get(call, GRPC_CONTEXT_TRACING));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.cc
new file mode 100644
index 0000000..63733fc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.cc	
@@ -0,0 +1,82 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/backend_metric.h"
+
+#include "src/core/lib/gprpp/string_view.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h"
+#else
+  #include  "udpa/data/orca/v1/orca_load_report.upb.h"
+#endif
+
+namespace grpc_core {
+
+namespace {
+
+template <typename EntryType>
+std::map<StringView, double, StringLess> ParseMap(
+    udpa_data_orca_v1_OrcaLoadReport* msg,
+    EntryType** (*entry_func)(udpa_data_orca_v1_OrcaLoadReport*, size_t*),
+    upb_strview (*key_func)(const EntryType*),
+    double (*value_func)(const EntryType*), Arena* arena) {
+  std::map<StringView, double, StringLess> result;
+  size_t size;
+  const auto* const* entries = entry_func(msg, &size);
+  for (size_t i = 0; i < size; ++i) {
+    upb_strview key_view = key_func(entries[i]);
+    char* key = static_cast<char*>(arena->Alloc(key_view.size + 1));
+    memcpy(key, key_view.data, key_view.size);
+    result[StringView(key, key_view.size)] = value_func(entries[i]);
+  }
+  return result;
+}
+
+}  // namespace
+
+const LoadBalancingPolicy::BackendMetricData* ParseBackendMetricData(
+    const grpc_slice& serialized_load_report, Arena* arena) {
+  upb::Arena upb_arena;
+  udpa_data_orca_v1_OrcaLoadReport* msg =
+      udpa_data_orca_v1_OrcaLoadReport_parse(
+          reinterpret_cast<const char*>(
+              GRPC_SLICE_START_PTR(serialized_load_report)),
+          GRPC_SLICE_LENGTH(serialized_load_report), upb_arena.ptr());
+  if (msg == nullptr) return nullptr;
+  LoadBalancingPolicy::BackendMetricData* backend_metric_data =
+      arena->New<LoadBalancingPolicy::BackendMetricData>();
+  backend_metric_data->cpu_utilization =
+      udpa_data_orca_v1_OrcaLoadReport_cpu_utilization(msg);
+  backend_metric_data->mem_utilization =
+      udpa_data_orca_v1_OrcaLoadReport_mem_utilization(msg);
+  backend_metric_data->requests_per_second =
+      udpa_data_orca_v1_OrcaLoadReport_rps(msg);
+  backend_metric_data->request_cost =
+      ParseMap<udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry>(
+          msg, udpa_data_orca_v1_OrcaLoadReport_mutable_request_cost,
+          udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_key,
+          udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_value, arena);
+  backend_metric_data->utilization =
+      ParseMap<udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry>(
+          msg, udpa_data_orca_v1_OrcaLoadReport_mutable_utilization,
+          udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_key,
+          udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_value, arena);
+  return backend_metric_data;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.h
new file mode 100644
index 0000000..d92b76c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backend_metric.h	
@@ -0,0 +1,36 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/gprpp/arena.h"
+
+namespace grpc_core {
+
+// Parses the serialized load report and allocates a BackendMetricData
+// object on the arena.
+const LoadBalancingPolicy::BackendMetricData* ParseBackendMetricData(
+    const grpc_slice& serialized_load_report, Arena* arena);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.cc
new file mode 100644
index 0000000..6ebb408
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.cc	
@@ -0,0 +1,181 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/backup_poller.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+#define DEFAULT_POLL_INTERVAL_MS 5000
+
+namespace {
+struct backup_poller {
+  grpc_timer polling_timer;
+  grpc_closure run_poller_closure;
+  grpc_closure shutdown_closure;
+  gpr_mu* pollset_mu;
+  grpc_pollset* pollset;  // guarded by pollset_mu
+  bool shutting_down;     // guarded by pollset_mu
+  gpr_refcount refs;
+  gpr_refcount shutdown_refs;
+};
+}  // namespace
+
+static gpr_once g_once = GPR_ONCE_INIT;
+static gpr_mu g_poller_mu;
+static backup_poller* g_poller = nullptr;  // guarded by g_poller_mu
+// g_poll_interval_ms is set only once at the first time
+// grpc_client_channel_start_backup_polling() is called, after that it is
+// treated as const.
+static int g_poll_interval_ms = DEFAULT_POLL_INTERVAL_MS;
+
+GPR_GLOBAL_CONFIG_DEFINE_INT32(
+    grpc_client_channel_backup_poll_interval_ms, DEFAULT_POLL_INTERVAL_MS,
+    "Declares the interval in ms between two backup polls on client channels. "
+    "These polls are run in the timer thread so that gRPC can process "
+    "connection failures while there is no active polling thread. "
+    "They help reconnect disconnected client channels (mostly due to "
+    "idleness), so that the next RPC on this channel won't fail. Set to 0 to "
+    "turn off the backup polls.");
+
+void grpc_client_channel_global_init_backup_polling() {
+  gpr_once_init(&g_once, [] { gpr_mu_init(&g_poller_mu); });
+  int32_t poll_interval_ms =
+      GPR_GLOBAL_CONFIG_GET(grpc_client_channel_backup_poll_interval_ms);
+  if (poll_interval_ms < 0) {
+    gpr_log(GPR_ERROR,
+            "Invalid GRPC_CLIENT_CHANNEL_BACKUP_POLL_INTERVAL_MS: %d, "
+            "default value %d will be used.",
+            poll_interval_ms, g_poll_interval_ms);
+  } else {
+    g_poll_interval_ms = poll_interval_ms;
+  }
+}
+
+static void backup_poller_shutdown_unref(backup_poller* p) {
+  if (gpr_unref(&p->shutdown_refs)) {
+    grpc_pollset_destroy(p->pollset);
+    gpr_free(p->pollset);
+    gpr_free(p);
+  }
+}
+
+static void done_poller(void* arg, grpc_error* /*error*/) {
+  backup_poller_shutdown_unref(static_cast<backup_poller*>(arg));
+}
+
+static void g_poller_unref() {
+  gpr_mu_lock(&g_poller_mu);
+  if (gpr_unref(&g_poller->refs)) {
+    backup_poller* p = g_poller;
+    g_poller = nullptr;
+    gpr_mu_unlock(&g_poller_mu);
+    gpr_mu_lock(p->pollset_mu);
+    p->shutting_down = true;
+    grpc_pollset_shutdown(
+        p->pollset, GRPC_CLOSURE_INIT(&p->shutdown_closure, done_poller, p,
+                                      grpc_schedule_on_exec_ctx));
+    gpr_mu_unlock(p->pollset_mu);
+    grpc_timer_cancel(&p->polling_timer);
+  } else {
+    gpr_mu_unlock(&g_poller_mu);
+  }
+}
+
+static void run_poller(void* arg, grpc_error* error) {
+  backup_poller* p = static_cast<backup_poller*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    if (error != GRPC_ERROR_CANCELLED) {
+      GRPC_LOG_IF_ERROR("run_poller", GRPC_ERROR_REF(error));
+    }
+    backup_poller_shutdown_unref(p);
+    return;
+  }
+  gpr_mu_lock(p->pollset_mu);
+  if (p->shutting_down) {
+    gpr_mu_unlock(p->pollset_mu);
+    backup_poller_shutdown_unref(p);
+    return;
+  }
+  grpc_error* err =
+      grpc_pollset_work(p->pollset, nullptr, grpc_core::ExecCtx::Get()->Now());
+  gpr_mu_unlock(p->pollset_mu);
+  GRPC_LOG_IF_ERROR("Run client channel backup poller", err);
+  grpc_timer_init(&p->polling_timer,
+                  grpc_core::ExecCtx::Get()->Now() + g_poll_interval_ms,
+                  &p->run_poller_closure);
+}
+
+static void g_poller_init_locked() {
+  if (g_poller == nullptr) {
+    g_poller = static_cast<backup_poller*>(gpr_zalloc(sizeof(backup_poller)));
+    g_poller->pollset =
+        static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size()));
+    g_poller->shutting_down = false;
+    grpc_pollset_init(g_poller->pollset, &g_poller->pollset_mu);
+    gpr_ref_init(&g_poller->refs, 0);
+    // one for timer cancellation, one for pollset shutdown
+    gpr_ref_init(&g_poller->shutdown_refs, 2);
+    GRPC_CLOSURE_INIT(&g_poller->run_poller_closure, run_poller, g_poller,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&g_poller->polling_timer,
+                    grpc_core::ExecCtx::Get()->Now() + g_poll_interval_ms,
+                    &g_poller->run_poller_closure);
+  }
+}
+
+void grpc_client_channel_start_backup_polling(
+    grpc_pollset_set* interested_parties) {
+  if (g_poll_interval_ms == 0 || grpc_iomgr_run_in_background()) {
+    return;
+  }
+  gpr_mu_lock(&g_poller_mu);
+  g_poller_init_locked();
+  gpr_ref(&g_poller->refs);
+  /* Get a reference to g_poller->pollset before releasing g_poller_mu to make
+   * TSAN happy. Otherwise, reading from g_poller (i.e g_poller->pollset) after
+   * releasing the lock and setting g_poller to NULL in g_poller_unref() is
+   * being flagged as a data-race by TSAN */
+  grpc_pollset* pollset = g_poller->pollset;
+  gpr_mu_unlock(&g_poller_mu);
+
+  grpc_pollset_set_add_pollset(interested_parties, pollset);
+}
+
+void grpc_client_channel_stop_backup_polling(
+    grpc_pollset_set* interested_parties) {
+  if (g_poll_interval_ms == 0 || grpc_iomgr_run_in_background()) {
+    return;
+  }
+  grpc_pollset_set_del_pollset(interested_parties, g_poller->pollset);
+  g_poller_unref();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.h
new file mode 100644
index 0000000..b412081
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/backup_poller.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_INT32(grpc_client_channel_backup_poll_interval_ms);
+
+/* Initializes backup polling. */
+void grpc_client_channel_global_init_backup_polling();
+
+/* Starts polling \a interested_parties periodically in the timer thread. */
+void grpc_client_channel_start_backup_polling(
+    grpc_pollset_set* interested_parties);
+
+/* Stops polling \a interested_parties. */
+void grpc_client_channel_stop_backup_polling(
+    grpc_pollset_set* interested_parties);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKUP_POLLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/channel_connectivity.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/channel_connectivity.cc
new file mode 100644
index 0000000..4ebb976
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/channel_connectivity.cc	
@@ -0,0 +1,264 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/channel.h"
+
+#include <inttypes.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+grpc_connectivity_state grpc_channel_check_connectivity_state(
+    grpc_channel* channel, int try_to_connect) {
+  /* forward through to the underlying client channel */
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_connectivity_state state;
+  GRPC_API_TRACE(
+      "grpc_channel_check_connectivity_state(channel=%p, try_to_connect=%d)", 2,
+      (channel, try_to_connect));
+  if (GPR_LIKELY(client_channel_elem->filter == &grpc_client_channel_filter)) {
+    state = grpc_client_channel_check_connectivity_state(client_channel_elem,
+                                                         try_to_connect);
+
+    return state;
+  }
+  gpr_log(GPR_ERROR,
+          "grpc_channel_check_connectivity_state called on something that is "
+          "not a client channel, but '%s'",
+          client_channel_elem->filter->name);
+
+  return GRPC_CHANNEL_SHUTDOWN;
+}
+
+typedef enum {
+  WAITING,
+  READY_TO_CALL_BACK,
+  CALLING_BACK_AND_FINISHED,
+} callback_phase;
+
+namespace {
+struct state_watcher {
+  gpr_mu mu;
+  callback_phase phase;
+  grpc_closure on_complete;
+  grpc_closure on_timeout;
+  grpc_closure watcher_timer_init;
+  grpc_timer alarm;
+  grpc_connectivity_state state;
+  grpc_completion_queue* cq;
+  grpc_cq_completion completion_storage;
+  grpc_channel* channel;
+  grpc_error* error;
+  void* tag;
+};
+}  // namespace
+
+static void delete_state_watcher(state_watcher* w) {
+  grpc_channel_element* client_channel_elem = grpc_channel_stack_last_element(
+      grpc_channel_get_channel_stack(w->channel));
+  if (client_channel_elem->filter == &grpc_client_channel_filter) {
+    GRPC_CHANNEL_INTERNAL_UNREF(w->channel, "watch_channel_connectivity");
+  } else {
+    abort();
+  }
+  gpr_mu_destroy(&w->mu);
+  gpr_free(w);
+}
+
+static void finished_completion(void* pw, grpc_cq_completion* /*ignored*/) {
+  bool should_delete = false;
+  state_watcher* w = static_cast<state_watcher*>(pw);
+  gpr_mu_lock(&w->mu);
+  switch (w->phase) {
+    case WAITING:
+    case READY_TO_CALL_BACK:
+      GPR_UNREACHABLE_CODE(return );
+    case CALLING_BACK_AND_FINISHED:
+      should_delete = true;
+      break;
+  }
+  gpr_mu_unlock(&w->mu);
+
+  if (should_delete) {
+    delete_state_watcher(w);
+  }
+}
+
+static void partly_done(state_watcher* w, bool due_to_completion,
+                        grpc_error* error) {
+  bool end_op = false;
+  void* end_op_tag = nullptr;
+  grpc_error* end_op_error = nullptr;
+  grpc_completion_queue* end_op_cq = nullptr;
+  grpc_cq_completion* end_op_completion_storage = nullptr;
+
+  if (due_to_completion) {
+    grpc_timer_cancel(&w->alarm);
+  } else {
+    grpc_channel_element* client_channel_elem = grpc_channel_stack_last_element(
+        grpc_channel_get_channel_stack(w->channel));
+    grpc_client_channel_watch_connectivity_state(
+        client_channel_elem,
+        grpc_polling_entity_create_from_pollset(grpc_cq_pollset(w->cq)),
+        nullptr, &w->on_complete, nullptr);
+  }
+
+  gpr_mu_lock(&w->mu);
+
+  if (due_to_completion) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures)) {
+      GRPC_LOG_IF_ERROR("watch_completion_error", GRPC_ERROR_REF(error));
+    }
+    GRPC_ERROR_UNREF(error);
+    error = GRPC_ERROR_NONE;
+  } else {
+    if (error == GRPC_ERROR_NONE) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Timed out waiting for connection state change");
+    } else if (error == GRPC_ERROR_CANCELLED) {
+      error = GRPC_ERROR_NONE;
+    }
+  }
+  switch (w->phase) {
+    case WAITING:
+      GRPC_ERROR_REF(error);
+      w->error = error;
+      w->phase = READY_TO_CALL_BACK;
+      break;
+    case READY_TO_CALL_BACK:
+      if (error != GRPC_ERROR_NONE) {
+        GPR_ASSERT(!due_to_completion);
+        GRPC_ERROR_UNREF(w->error);
+        GRPC_ERROR_REF(error);
+        w->error = error;
+      }
+      w->phase = CALLING_BACK_AND_FINISHED;
+      end_op = true;
+      end_op_cq = w->cq;
+      end_op_tag = w->tag;
+      end_op_error = w->error;
+      end_op_completion_storage = &w->completion_storage;
+      break;
+    case CALLING_BACK_AND_FINISHED:
+      GPR_UNREACHABLE_CODE(return );
+      break;
+  }
+  gpr_mu_unlock(&w->mu);
+
+  if (end_op) {
+    grpc_cq_end_op(end_op_cq, end_op_tag, end_op_error, finished_completion, w,
+                   end_op_completion_storage);
+  }
+
+  GRPC_ERROR_UNREF(error);
+}
+
+static void watch_complete(void* pw, grpc_error* error) {
+  partly_done(static_cast<state_watcher*>(pw), true, GRPC_ERROR_REF(error));
+}
+
+static void timeout_complete(void* pw, grpc_error* error) {
+  partly_done(static_cast<state_watcher*>(pw), false, GRPC_ERROR_REF(error));
+}
+
+int grpc_channel_num_external_connectivity_watchers(grpc_channel* channel) {
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
+  return grpc_client_channel_num_external_connectivity_watchers(
+      client_channel_elem);
+}
+
+typedef struct watcher_timer_init_arg {
+  state_watcher* w;
+  gpr_timespec deadline;
+} watcher_timer_init_arg;
+
+static void watcher_timer_init(void* arg, grpc_error* /*error_ignored*/) {
+  watcher_timer_init_arg* wa = static_cast<watcher_timer_init_arg*>(arg);
+
+  grpc_timer_init(&wa->w->alarm, grpc_timespec_to_millis_round_up(wa->deadline),
+                  &wa->w->on_timeout);
+  gpr_free(wa);
+}
+
+int grpc_channel_support_connectivity_watcher(grpc_channel* channel) {
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
+  return client_channel_elem->filter != &grpc_client_channel_filter ? 0 : 1;
+}
+
+void grpc_channel_watch_connectivity_state(
+    grpc_channel* channel, grpc_connectivity_state last_observed_state,
+    gpr_timespec deadline, grpc_completion_queue* cq, void* tag) {
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  state_watcher* w = static_cast<state_watcher*>(gpr_malloc(sizeof(*w)));
+
+  GRPC_API_TRACE(
+      "grpc_channel_watch_connectivity_state("
+      "channel=%p, last_observed_state=%d, "
+      "deadline=gpr_timespec { tv_sec: %" PRId64
+      ", tv_nsec: %d, clock_type: %d }, "
+      "cq=%p, tag=%p)",
+      7,
+      (channel, (int)last_observed_state, deadline.tv_sec, deadline.tv_nsec,
+       (int)deadline.clock_type, cq, tag));
+
+  GPR_ASSERT(grpc_cq_begin_op(cq, tag));
+
+  gpr_mu_init(&w->mu);
+  GRPC_CLOSURE_INIT(&w->on_complete, watch_complete, w,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&w->on_timeout, timeout_complete, w,
+                    grpc_schedule_on_exec_ctx);
+  w->phase = WAITING;
+  w->state = last_observed_state;
+  w->cq = cq;
+  w->tag = tag;
+  w->channel = channel;
+  w->error = nullptr;
+
+  watcher_timer_init_arg* wa = static_cast<watcher_timer_init_arg*>(
+      gpr_malloc(sizeof(watcher_timer_init_arg)));
+  wa->w = w;
+  wa->deadline = deadline;
+  GRPC_CLOSURE_INIT(&w->watcher_timer_init, watcher_timer_init, wa,
+                    grpc_schedule_on_exec_ctx);
+
+  if (client_channel_elem->filter == &grpc_client_channel_filter) {
+    GRPC_CHANNEL_INTERNAL_REF(channel, "watch_channel_connectivity");
+    grpc_client_channel_watch_connectivity_state(
+        client_channel_elem,
+        grpc_polling_entity_create_from_pollset(grpc_cq_pollset(cq)), &w->state,
+        &w->on_complete, &w->watcher_timer_init);
+  } else {
+    abort();
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.cc
new file mode 100644
index 0000000..eba4059
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.cc	
@@ -0,0 +1,4088 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <set>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/backend_metric.h"
+#include "src/core/ext/filters/client_channel/backup_poller.h"
+#include "src/core/ext/filters/client_channel/global_subchannel_pool.h"
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/local_subchannel_pool.h"
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/resolver_result_parsing.h"
+#include "src/core/ext/filters/client_channel/resolving_lb_policy.h"
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/filters/deadline/deadline_filter.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/status_metadata.h"
+
+using grpc_core::internal::ClientChannelMethodParsedConfig;
+using grpc_core::internal::ServerRetryThrottleData;
+
+//
+// Client channel filter
+//
+
+// By default, we buffer 256 KiB per RPC for retries.
+// TODO(roth): Do we have any data to suggest a better value?
+#define DEFAULT_PER_RPC_RETRY_BUFFER_SIZE (256 << 10)
+
+// This value was picked arbitrarily.  It can be changed if there is
+// any even moderately compelling reason to do so.
+#define RETRY_BACKOFF_JITTER 0.2
+
+// Max number of batches that can be pending on a call at any given
+// time.  This includes one batch for each of the following ops:
+//   recv_initial_metadata
+//   send_initial_metadata
+//   recv_message
+//   send_message
+//   recv_trailing_metadata
+//   send_trailing_metadata
+#define MAX_PENDING_BATCHES 6
+
+namespace grpc_core {
+
+TraceFlag grpc_client_channel_call_trace(false, "client_channel_call");
+TraceFlag grpc_client_channel_routing_trace(false, "client_channel_routing");
+
+namespace {
+
+//
+// ChannelData definition
+//
+
+class ChannelData {
+ public:
+  struct QueuedPick {
+    grpc_call_element* elem;
+    QueuedPick* next = nullptr;
+  };
+
+  static grpc_error* Init(grpc_channel_element* elem,
+                          grpc_channel_element_args* args);
+  static void Destroy(grpc_channel_element* elem);
+  static void StartTransportOp(grpc_channel_element* elem,
+                               grpc_transport_op* op);
+  static void GetChannelInfo(grpc_channel_element* elem,
+                             const grpc_channel_info* info);
+
+  bool deadline_checking_enabled() const { return deadline_checking_enabled_; }
+  bool enable_retries() const { return enable_retries_; }
+  size_t per_rpc_retry_buffer_size() const {
+    return per_rpc_retry_buffer_size_;
+  }
+
+  // Note: Does NOT return a new ref.
+  grpc_error* disconnect_error() const {
+    return disconnect_error_.Load(MemoryOrder::ACQUIRE);
+  }
+
+  Mutex* data_plane_mu() const { return &data_plane_mu_; }
+
+  LoadBalancingPolicy::SubchannelPicker* picker() const {
+    return picker_.get();
+  }
+  void AddQueuedPick(QueuedPick* pick, grpc_polling_entity* pollent);
+  void RemoveQueuedPick(QueuedPick* to_remove, grpc_polling_entity* pollent);
+
+  bool received_service_config_data() const {
+    return received_service_config_data_;
+  }
+  RefCountedPtr<ServerRetryThrottleData> retry_throttle_data() const {
+    return retry_throttle_data_;
+  }
+  RefCountedPtr<ServiceConfig> service_config() const {
+    return service_config_;
+  }
+
+  RefCountedPtr<ConnectedSubchannel> GetConnectedSubchannelInDataPlane(
+      SubchannelInterface* subchannel) const;
+
+  grpc_connectivity_state CheckConnectivityState(bool try_to_connect);
+
+  void AddExternalConnectivityWatcher(grpc_polling_entity pollent,
+                                      grpc_connectivity_state* state,
+                                      grpc_closure* on_complete,
+                                      grpc_closure* watcher_timer_init) {
+    MutexLock lock(&external_watchers_mu_);
+    // Will be deleted when the watch is complete.
+    GPR_ASSERT(external_watchers_[on_complete] == nullptr);
+    external_watchers_[on_complete] = new ExternalConnectivityWatcher(
+        this, pollent, state, on_complete, watcher_timer_init);
+  }
+
+  void RemoveExternalConnectivityWatcher(grpc_closure* on_complete,
+                                         bool cancel) {
+    MutexLock lock(&external_watchers_mu_);
+    auto it = external_watchers_.find(on_complete);
+    if (it != external_watchers_.end()) {
+      if (cancel) it->second->Cancel();
+      external_watchers_.erase(it);
+    }
+  }
+
+  int NumExternalConnectivityWatchers() const {
+    MutexLock lock(&external_watchers_mu_);
+    return static_cast<int>(external_watchers_.size());
+  }
+
+  void AddConnectivityWatcher(
+      grpc_connectivity_state initial_state,
+      OrphanablePtr<AsyncConnectivityStateWatcherInterface> watcher);
+  void RemoveConnectivityWatcher(
+      AsyncConnectivityStateWatcherInterface* watcher);
+
+ private:
+  class SubchannelWrapper;
+  class ClientChannelControlHelper;
+  class ConnectivityWatcherAdder;
+  class ConnectivityWatcherRemover;
+
+  // Represents a pending connectivity callback from an external caller
+  // via grpc_client_channel_watch_connectivity_state().
+  class ExternalConnectivityWatcher : public ConnectivityStateWatcherInterface {
+   public:
+    ExternalConnectivityWatcher(ChannelData* chand, grpc_polling_entity pollent,
+                                grpc_connectivity_state* state,
+                                grpc_closure* on_complete,
+                                grpc_closure* watcher_timer_init);
+
+    ~ExternalConnectivityWatcher();
+
+    void Notify(grpc_connectivity_state state) override;
+
+    void Cancel();
+
+   private:
+    static void AddWatcherLocked(void* arg, grpc_error* ignored);
+    static void RemoveWatcherLocked(void* arg, grpc_error* ignored);
+
+    ChannelData* chand_;
+    grpc_polling_entity pollent_;
+    grpc_connectivity_state initial_state_;
+    grpc_connectivity_state* state_;
+    grpc_closure* on_complete_;
+    grpc_closure* watcher_timer_init_;
+    grpc_closure add_closure_;
+    grpc_closure remove_closure_;
+    Atomic<bool> done_{false};
+  };
+
+  ChannelData(grpc_channel_element_args* args, grpc_error** error);
+  ~ChannelData();
+
+  void UpdateStateAndPickerLocked(
+      grpc_connectivity_state state, const char* reason,
+      std::unique_ptr<LoadBalancingPolicy::SubchannelPicker> picker);
+
+  void UpdateServiceConfigLocked(
+      RefCountedPtr<ServerRetryThrottleData> retry_throttle_data,
+      RefCountedPtr<ServiceConfig> service_config);
+
+  void CreateResolvingLoadBalancingPolicyLocked();
+
+  void DestroyResolvingLoadBalancingPolicyLocked();
+
+  static bool ProcessResolverResultLocked(
+      void* arg, const Resolver::Result& result,
+      RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config,
+      grpc_error** service_config_error, bool* no_valid_service_config);
+
+  grpc_error* DoPingLocked(grpc_transport_op* op);
+
+  static void StartTransportOpLocked(void* arg, grpc_error* ignored);
+
+  static void TryToConnectLocked(void* arg, grpc_error* error_ignored);
+
+  void ProcessLbPolicy(
+      const Resolver::Result& resolver_result,
+      const internal::ClientChannelGlobalParsedConfig* parsed_service_config,
+      RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config);
+
+  //
+  // Fields set at construction and never modified.
+  //
+  const bool deadline_checking_enabled_;
+  const bool enable_retries_;
+  const size_t per_rpc_retry_buffer_size_;
+  grpc_channel_stack* owning_stack_;
+  ClientChannelFactory* client_channel_factory_;
+  const grpc_channel_args* channel_args_;
+  RefCountedPtr<ServiceConfig> default_service_config_;
+  grpc_core::UniquePtr<char> server_name_;
+  grpc_core::UniquePtr<char> target_uri_;
+  channelz::ChannelNode* channelz_node_;
+
+  //
+  // Fields used in the data plane.  Guarded by data_plane_mu.
+  //
+  mutable Mutex data_plane_mu_;
+  std::unique_ptr<LoadBalancingPolicy::SubchannelPicker> picker_;
+  QueuedPick* queued_picks_ = nullptr;  // Linked list of queued picks.
+  // Data from service config.
+  bool received_service_config_data_ = false;
+  RefCountedPtr<ServerRetryThrottleData> retry_throttle_data_;
+  RefCountedPtr<ServiceConfig> service_config_;
+
+  //
+  // Fields used in the control plane.  Guarded by combiner.
+  //
+  Combiner* combiner_;
+  grpc_pollset_set* interested_parties_;
+  RefCountedPtr<SubchannelPoolInterface> subchannel_pool_;
+  OrphanablePtr<ResolvingLoadBalancingPolicy> resolving_lb_policy_;
+  ConnectivityStateTracker state_tracker_;
+  grpc_core::UniquePtr<char> health_check_service_name_;
+  RefCountedPtr<ServiceConfig> saved_service_config_;
+  bool received_first_resolver_result_ = false;
+  // The number of SubchannelWrapper instances referencing a given Subchannel.
+  std::map<Subchannel*, int> subchannel_refcount_map_;
+  // The set of SubchannelWrappers that currently exist.
+  // No need to hold a ref, since the map is updated in the control-plane
+  // combiner when the SubchannelWrappers are created and destroyed.
+  std::set<SubchannelWrapper*> subchannel_wrappers_;
+  // Pending ConnectedSubchannel updates for each SubchannelWrapper.
+  // Updates are queued here in the control plane combiner and then applied
+  // in the data plane mutex when the picker is updated.
+  std::map<RefCountedPtr<SubchannelWrapper>, RefCountedPtr<ConnectedSubchannel>,
+           RefCountedPtrLess<SubchannelWrapper>>
+      pending_subchannel_updates_;
+
+  //
+  // Fields accessed from both data plane mutex and control plane combiner.
+  //
+  Atomic<grpc_error*> disconnect_error_;
+
+  //
+  // Fields guarded by a mutex, since they need to be accessed
+  // synchronously via get_channel_info().
+  //
+  gpr_mu info_mu_;
+  grpc_core::UniquePtr<char> info_lb_policy_name_;
+  grpc_core::UniquePtr<char> info_service_config_json_;
+
+  //
+  // Fields guarded by a mutex, since they need to be accessed
+  // synchronously via grpc_channel_num_external_connectivity_watchers().
+  //
+  mutable Mutex external_watchers_mu_;
+  std::map<grpc_closure*, ExternalConnectivityWatcher*> external_watchers_;
+};
+
+//
+// CallData definition
+//
+
+class CallData {
+ public:
+  static grpc_error* Init(grpc_call_element* elem,
+                          const grpc_call_element_args* args);
+  static void Destroy(grpc_call_element* elem,
+                      const grpc_call_final_info* final_info,
+                      grpc_closure* then_schedule_closure);
+  static void StartTransportStreamOpBatch(
+      grpc_call_element* elem, grpc_transport_stream_op_batch* batch);
+  static void SetPollent(grpc_call_element* elem, grpc_polling_entity* pollent);
+
+  RefCountedPtr<SubchannelCall> subchannel_call() { return subchannel_call_; }
+
+  // Invoked by channel for queued picks once resolver results are available.
+  void MaybeApplyServiceConfigToCallLocked(grpc_call_element* elem);
+
+  // Invoked by channel for queued picks when the picker is updated.
+  static void PickSubchannel(void* arg, grpc_error* error);
+
+  // Helper function for performing a pick while holding the data plane
+  // mutex.  Returns true if the pick is complete, in which case the caller
+  // must invoke PickDone() or AsyncPickDone() with the returned error.
+  bool PickSubchannelLocked(grpc_call_element* elem, grpc_error** error);
+
+  // Schedules a callback to process the completed pick.  The callback
+  // will not run until after this method returns.
+  void AsyncPickDone(grpc_call_element* elem, grpc_error* error);
+
+ private:
+  class QueuedPickCanceller;
+
+  class Metadata : public LoadBalancingPolicy::MetadataInterface {
+   public:
+    Metadata(CallData* calld, grpc_metadata_batch* batch)
+        : calld_(calld), batch_(batch) {}
+
+    void Add(StringView key, StringView value) override {
+      grpc_linked_mdelem* linked_mdelem = static_cast<grpc_linked_mdelem*>(
+          calld_->arena_->Alloc(sizeof(grpc_linked_mdelem)));
+      linked_mdelem->md = grpc_mdelem_from_slices(
+          grpc_core::ExternallyManagedSlice(key.data(), key.size()),
+          grpc_core::ExternallyManagedSlice(value.data(), value.size()));
+      GPR_ASSERT(grpc_metadata_batch_link_tail(batch_, linked_mdelem) ==
+                 GRPC_ERROR_NONE);
+    }
+
+    iterator begin() const override {
+      static_assert(sizeof(grpc_linked_mdelem*) <= sizeof(intptr_t),
+                    "iterator size too large");
+      return iterator(this, reinterpret_cast<intptr_t>(batch_->list.head));
+    }
+    iterator end() const override {
+      static_assert(sizeof(grpc_linked_mdelem*) <= sizeof(intptr_t),
+                    "iterator size too large");
+      return iterator(this, 0);
+    }
+
+    iterator erase(iterator it) override {
+      grpc_linked_mdelem* linked_mdelem =
+          reinterpret_cast<grpc_linked_mdelem*>(GetIteratorHandle(it));
+      intptr_t handle = reinterpret_cast<intptr_t>(linked_mdelem->next);
+      grpc_metadata_batch_remove(batch_, linked_mdelem);
+      return iterator(this, handle);
+    }
+
+   private:
+    intptr_t IteratorHandleNext(intptr_t handle) const override {
+      grpc_linked_mdelem* linked_mdelem =
+          reinterpret_cast<grpc_linked_mdelem*>(handle);
+      return reinterpret_cast<intptr_t>(linked_mdelem->next);
+    }
+    std::pair<StringView, StringView> IteratorHandleGet(
+        intptr_t handle) const override {
+      grpc_linked_mdelem* linked_mdelem =
+          reinterpret_cast<grpc_linked_mdelem*>(handle);
+      return std::make_pair(
+          StringViewFromSlice(GRPC_MDKEY(linked_mdelem->md)),
+          StringViewFromSlice(GRPC_MDVALUE(linked_mdelem->md)));
+    }
+
+    CallData* calld_;
+    grpc_metadata_batch* batch_;
+  };
+
+  class LbCallState : public LoadBalancingPolicy::CallState {
+   public:
+    explicit LbCallState(CallData* calld) : calld_(calld) {}
+
+    void* Alloc(size_t size) override { return calld_->arena_->Alloc(size); }
+
+    const LoadBalancingPolicy::BackendMetricData* GetBackendMetricData()
+        override {
+      if (calld_->backend_metric_data_ == nullptr) {
+        grpc_linked_mdelem* md = calld_->recv_trailing_metadata_->idx.named
+                                     .x_endpoint_load_metrics_bin;
+        if (md != nullptr) {
+          calld_->backend_metric_data_ =
+              ParseBackendMetricData(GRPC_MDVALUE(md->md), calld_->arena_);
+        }
+      }
+      return calld_->backend_metric_data_;
+    }
+
+   private:
+    CallData* calld_;
+  };
+
+  // State used for starting a retryable batch on a subchannel call.
+  // This provides its own grpc_transport_stream_op_batch and other data
+  // structures needed to populate the ops in the batch.
+  // We allocate one struct on the arena for each attempt at starting a
+  // batch on a given subchannel call.
+  struct SubchannelCallBatchData {
+    // Creates a SubchannelCallBatchData object on the call's arena with the
+    // specified refcount.  If set_on_complete is true, the batch's
+    // on_complete callback will be set to point to on_complete();
+    // otherwise, the batch's on_complete callback will be null.
+    static SubchannelCallBatchData* Create(grpc_call_element* elem,
+                                           int refcount, bool set_on_complete);
+
+    void Unref() {
+      if (gpr_unref(&refs)) Destroy();
+    }
+
+    SubchannelCallBatchData(grpc_call_element* elem, CallData* calld,
+                            int refcount, bool set_on_complete);
+    // All dtor code must be added in `Destroy()`. This is because we may
+    // call closures in `SubchannelCallBatchData` after they are unrefed by
+    // `Unref()`, and msan would complain about accessing this class
+    // after calling dtor. As a result we cannot call the `dtor` in `Unref()`.
+    // TODO(soheil): We should try to call the dtor in `Unref()`.
+    ~SubchannelCallBatchData() { Destroy(); }
+    void Destroy();
+
+    gpr_refcount refs;
+    grpc_call_element* elem;
+    RefCountedPtr<SubchannelCall> subchannel_call;
+    // The batch to use in the subchannel call.
+    // Its payload field points to SubchannelCallRetryState::batch_payload.
+    grpc_transport_stream_op_batch batch;
+    // For intercepting on_complete.
+    grpc_closure on_complete;
+  };
+
+  // Retry state associated with a subchannel call.
+  // Stored in the parent_data of the subchannel call object.
+  struct SubchannelCallRetryState {
+    explicit SubchannelCallRetryState(grpc_call_context_element* context)
+        : batch_payload(context),
+          started_send_initial_metadata(false),
+          completed_send_initial_metadata(false),
+          started_send_trailing_metadata(false),
+          completed_send_trailing_metadata(false),
+          started_recv_initial_metadata(false),
+          completed_recv_initial_metadata(false),
+          started_recv_trailing_metadata(false),
+          completed_recv_trailing_metadata(false),
+          retry_dispatched(false) {}
+
+    // SubchannelCallBatchData.batch.payload points to this.
+    grpc_transport_stream_op_batch_payload batch_payload;
+    // For send_initial_metadata.
+    // Note that we need to make a copy of the initial metadata for each
+    // subchannel call instead of just referring to the copy in call_data,
+    // because filters in the subchannel stack will probably add entries,
+    // so we need to start in a pristine state for each attempt of the call.
+    grpc_linked_mdelem* send_initial_metadata_storage;
+    grpc_metadata_batch send_initial_metadata;
+    // For send_message.
+    // TODO(roth): Restructure this to eliminate use of ManualConstructor.
+    ManualConstructor<ByteStreamCache::CachingByteStream> send_message;
+    // For send_trailing_metadata.
+    grpc_linked_mdelem* send_trailing_metadata_storage;
+    grpc_metadata_batch send_trailing_metadata;
+    // For intercepting recv_initial_metadata.
+    grpc_metadata_batch recv_initial_metadata;
+    grpc_closure recv_initial_metadata_ready;
+    bool trailing_metadata_available = false;
+    // For intercepting recv_message.
+    grpc_closure recv_message_ready;
+    OrphanablePtr<ByteStream> recv_message;
+    // For intercepting recv_trailing_metadata.
+    grpc_metadata_batch recv_trailing_metadata;
+    grpc_transport_stream_stats collect_stats;
+    grpc_closure recv_trailing_metadata_ready;
+    // These fields indicate which ops have been started and completed on
+    // this subchannel call.
+    size_t started_send_message_count = 0;
+    size_t completed_send_message_count = 0;
+    size_t started_recv_message_count = 0;
+    size_t completed_recv_message_count = 0;
+    bool started_send_initial_metadata : 1;
+    bool completed_send_initial_metadata : 1;
+    bool started_send_trailing_metadata : 1;
+    bool completed_send_trailing_metadata : 1;
+    bool started_recv_initial_metadata : 1;
+    bool completed_recv_initial_metadata : 1;
+    bool started_recv_trailing_metadata : 1;
+    bool completed_recv_trailing_metadata : 1;
+    // State for callback processing.
+    SubchannelCallBatchData* recv_initial_metadata_ready_deferred_batch =
+        nullptr;
+    grpc_error* recv_initial_metadata_error = GRPC_ERROR_NONE;
+    SubchannelCallBatchData* recv_message_ready_deferred_batch = nullptr;
+    grpc_error* recv_message_error = GRPC_ERROR_NONE;
+    SubchannelCallBatchData* recv_trailing_metadata_internal_batch = nullptr;
+    // NOTE: Do not move this next to the metadata bitfields above. That would
+    //       save space but will also result in a data race because compiler
+    //       will generate a 2 byte store which overwrites the meta-data
+    //       fields upon setting this field.
+    bool retry_dispatched : 1;
+  };
+
+  // Pending batches stored in call data.
+  struct PendingBatch {
+    // The pending batch.  If nullptr, this slot is empty.
+    grpc_transport_stream_op_batch* batch;
+    // Indicates whether payload for send ops has been cached in CallData.
+    bool send_ops_cached;
+  };
+
+  CallData(grpc_call_element* elem, const ChannelData& chand,
+           const grpc_call_element_args& args);
+  ~CallData();
+
+  // Caches data for send ops so that it can be retried later, if not
+  // already cached.
+  void MaybeCacheSendOpsForBatch(PendingBatch* pending);
+  void FreeCachedSendInitialMetadata(ChannelData* chand);
+  // Frees cached send_message at index idx.
+  void FreeCachedSendMessage(ChannelData* chand, size_t idx);
+  void FreeCachedSendTrailingMetadata(ChannelData* chand);
+  // Frees cached send ops that have already been completed after
+  // committing the call.
+  void FreeCachedSendOpDataAfterCommit(grpc_call_element* elem,
+                                       SubchannelCallRetryState* retry_state);
+  // Frees cached send ops that were completed by the completed batch in
+  // batch_data.  Used when batches are completed after the call is committed.
+  void FreeCachedSendOpDataForCompletedBatch(
+      grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+      SubchannelCallRetryState* retry_state);
+
+  static void RecvTrailingMetadataReadyForLoadBalancingPolicy(
+      void* arg, grpc_error* error);
+  void MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy(
+      grpc_transport_stream_op_batch* batch);
+
+  // Returns the index into pending_batches_ to be used for batch.
+  static size_t GetBatchIndex(grpc_transport_stream_op_batch* batch);
+  void PendingBatchesAdd(grpc_call_element* elem,
+                         grpc_transport_stream_op_batch* batch);
+  void PendingBatchClear(PendingBatch* pending);
+  void MaybeClearPendingBatch(grpc_call_element* elem, PendingBatch* pending);
+  static void FailPendingBatchInCallCombiner(void* arg, grpc_error* error);
+  // A predicate type and some useful implementations for PendingBatchesFail().
+  typedef bool (*YieldCallCombinerPredicate)(
+      const CallCombinerClosureList& closures);
+  static bool YieldCallCombiner(const CallCombinerClosureList& /*closures*/) {
+    return true;
+  }
+  static bool NoYieldCallCombiner(const CallCombinerClosureList& /*closures*/) {
+    return false;
+  }
+  static bool YieldCallCombinerIfPendingBatchesFound(
+      const CallCombinerClosureList& closures) {
+    return closures.size() > 0;
+  }
+  // Fails all pending batches.
+  // If yield_call_combiner_predicate returns true, assumes responsibility for
+  // yielding the call combiner.
+  void PendingBatchesFail(
+      grpc_call_element* elem, grpc_error* error,
+      YieldCallCombinerPredicate yield_call_combiner_predicate);
+  static void ResumePendingBatchInCallCombiner(void* arg, grpc_error* ignored);
+  // Resumes all pending batches on subchannel_call_.
+  void PendingBatchesResume(grpc_call_element* elem);
+  // Returns a pointer to the first pending batch for which predicate(batch)
+  // returns true, or null if not found.
+  template <typename Predicate>
+  PendingBatch* PendingBatchFind(grpc_call_element* elem,
+                                 const char* log_message, Predicate predicate);
+
+  // Commits the call so that no further retry attempts will be performed.
+  void RetryCommit(grpc_call_element* elem,
+                   SubchannelCallRetryState* retry_state);
+  // Starts a retry after appropriate back-off.
+  void DoRetry(grpc_call_element* elem, SubchannelCallRetryState* retry_state,
+               grpc_millis server_pushback_ms);
+  // Returns true if the call is being retried.
+  bool MaybeRetry(grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+                  grpc_status_code status, grpc_mdelem* server_pushback_md);
+
+  // Invokes recv_initial_metadata_ready for a subchannel batch.
+  static void InvokeRecvInitialMetadataCallback(void* arg, grpc_error* error);
+  // Intercepts recv_initial_metadata_ready callback for retries.
+  // Commits the call and returns the initial metadata up the stack.
+  static void RecvInitialMetadataReady(void* arg, grpc_error* error);
+
+  // Invokes recv_message_ready for a subchannel batch.
+  static void InvokeRecvMessageCallback(void* arg, grpc_error* error);
+  // Intercepts recv_message_ready callback for retries.
+  // Commits the call and returns the message up the stack.
+  static void RecvMessageReady(void* arg, grpc_error* error);
+
+  // Sets *status and *server_pushback_md based on md_batch and error.
+  // Only sets *server_pushback_md if server_pushback_md != nullptr.
+  void GetCallStatus(grpc_metadata_batch* md_batch, grpc_error* error,
+                     grpc_status_code* status,
+                     grpc_mdelem** server_pushback_md);
+  // Adds recv_trailing_metadata_ready closure to closures.
+  void AddClosureForRecvTrailingMetadataReady(
+      grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+      grpc_error* error, CallCombinerClosureList* closures);
+  // Adds any necessary closures for deferred recv_initial_metadata and
+  // recv_message callbacks to closures.
+  static void AddClosuresForDeferredRecvCallbacks(
+      SubchannelCallBatchData* batch_data,
+      SubchannelCallRetryState* retry_state, CallCombinerClosureList* closures);
+  // Returns true if any op in the batch was not yet started.
+  // Only looks at send ops, since recv ops are always started immediately.
+  bool PendingBatchIsUnstarted(PendingBatch* pending,
+                               SubchannelCallRetryState* retry_state);
+  // For any pending batch containing an op that has not yet been started,
+  // adds the pending batch's completion closures to closures.
+  void AddClosuresToFailUnstartedPendingBatches(
+      grpc_call_element* elem, SubchannelCallRetryState* retry_state,
+      grpc_error* error, CallCombinerClosureList* closures);
+  // Runs necessary closures upon completion of a call attempt.
+  void RunClosuresForCompletedCall(SubchannelCallBatchData* batch_data,
+                                   grpc_error* error);
+  // Intercepts recv_trailing_metadata_ready callback for retries.
+  // Commits the call and returns the trailing metadata up the stack.
+  static void RecvTrailingMetadataReady(void* arg, grpc_error* error);
+
+  // Adds the on_complete closure for the pending batch completed in
+  // batch_data to closures.
+  void AddClosuresForCompletedPendingBatch(grpc_call_element* elem,
+                                           SubchannelCallBatchData* batch_data,
+                                           grpc_error* error,
+                                           CallCombinerClosureList* closures);
+
+  // If there are any cached ops to replay or pending ops to start on the
+  // subchannel call, adds a closure to closures to invoke
+  // StartRetriableSubchannelBatches().
+  void AddClosuresForReplayOrPendingSendOps(
+      grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+      SubchannelCallRetryState* retry_state, CallCombinerClosureList* closures);
+
+  // Callback used to intercept on_complete from subchannel calls.
+  // Called only when retries are enabled.
+  static void OnComplete(void* arg, grpc_error* error);
+
+  static void StartBatchInCallCombiner(void* arg, grpc_error* ignored);
+  // Adds a closure to closures that will execute batch in the call combiner.
+  void AddClosureForSubchannelBatch(grpc_call_element* elem,
+                                    grpc_transport_stream_op_batch* batch,
+                                    CallCombinerClosureList* closures);
+  // Adds retriable send_initial_metadata op to batch_data.
+  void AddRetriableSendInitialMetadataOp(SubchannelCallRetryState* retry_state,
+                                         SubchannelCallBatchData* batch_data);
+  // Adds retriable send_message op to batch_data.
+  void AddRetriableSendMessageOp(grpc_call_element* elem,
+                                 SubchannelCallRetryState* retry_state,
+                                 SubchannelCallBatchData* batch_data);
+  // Adds retriable send_trailing_metadata op to batch_data.
+  void AddRetriableSendTrailingMetadataOp(SubchannelCallRetryState* retry_state,
+                                          SubchannelCallBatchData* batch_data);
+  // Adds retriable recv_initial_metadata op to batch_data.
+  void AddRetriableRecvInitialMetadataOp(SubchannelCallRetryState* retry_state,
+                                         SubchannelCallBatchData* batch_data);
+  // Adds retriable recv_message op to batch_data.
+  void AddRetriableRecvMessageOp(SubchannelCallRetryState* retry_state,
+                                 SubchannelCallBatchData* batch_data);
+  // Adds retriable recv_trailing_metadata op to batch_data.
+  void AddRetriableRecvTrailingMetadataOp(SubchannelCallRetryState* retry_state,
+                                          SubchannelCallBatchData* batch_data);
+  // Helper function used to start a recv_trailing_metadata batch.  This
+  // is used in the case where a recv_initial_metadata or recv_message
+  // op fails in a way that we know the call is over but when the application
+  // has not yet started its own recv_trailing_metadata op.
+  void StartInternalRecvTrailingMetadata(grpc_call_element* elem);
+  // If there are any cached send ops that need to be replayed on the
+  // current subchannel call, creates and returns a new subchannel batch
+  // to replay those ops.  Otherwise, returns nullptr.
+  SubchannelCallBatchData* MaybeCreateSubchannelBatchForReplay(
+      grpc_call_element* elem, SubchannelCallRetryState* retry_state);
+  // Adds subchannel batches for pending batches to closures.
+  void AddSubchannelBatchesForPendingBatches(
+      grpc_call_element* elem, SubchannelCallRetryState* retry_state,
+      CallCombinerClosureList* closures);
+  // Constructs and starts whatever subchannel batches are needed on the
+  // subchannel call.
+  static void StartRetriableSubchannelBatches(void* arg, grpc_error* ignored);
+
+  void CreateSubchannelCall(grpc_call_element* elem);
+  // Invoked when a pick is completed, on both success or failure.
+  static void PickDone(void* arg, grpc_error* error);
+  // Removes the call from the channel's list of queued picks.
+  void RemoveCallFromQueuedPicksLocked(grpc_call_element* elem);
+  // Adds the call to the channel's list of queued picks.
+  void AddCallToQueuedPicksLocked(grpc_call_element* elem);
+  // Applies service config to the call.  Must be invoked once we know
+  // that the resolver has returned results to the channel.
+  void ApplyServiceConfigToCallLocked(grpc_call_element* elem);
+
+  // State for handling deadlines.
+  // The code in deadline_filter.c requires this to be the first field.
+  // TODO(roth): This is slightly sub-optimal in that grpc_deadline_state
+  // and this struct both independently store pointers to the call stack
+  // and call combiner.  If/when we have time, find a way to avoid this
+  // without breaking the grpc_deadline_state abstraction.
+  grpc_deadline_state deadline_state_;
+
+  grpc_slice path_;  // Request path.
+  gpr_cycle_counter call_start_time_;
+  grpc_millis deadline_;
+  Arena* arena_;
+  grpc_call_stack* owning_call_;
+  CallCombiner* call_combiner_;
+  grpc_call_context_element* call_context_;
+
+  RefCountedPtr<ServerRetryThrottleData> retry_throttle_data_;
+  ServiceConfig::CallData service_config_call_data_;
+  const ClientChannelMethodParsedConfig* method_params_ = nullptr;
+
+  RefCountedPtr<SubchannelCall> subchannel_call_;
+
+  // Set when we get a cancel_stream op.
+  grpc_error* cancel_error_ = GRPC_ERROR_NONE;
+
+  ChannelData::QueuedPick pick_;
+  bool pick_queued_ = false;
+  bool service_config_applied_ = false;
+  QueuedPickCanceller* pick_canceller_ = nullptr;
+  LbCallState lb_call_state_;
+  const LoadBalancingPolicy::BackendMetricData* backend_metric_data_ = nullptr;
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  std::function<void(grpc_error*, LoadBalancingPolicy::MetadataInterface*,
+                     LoadBalancingPolicy::CallState*)>
+      lb_recv_trailing_metadata_ready_;
+  grpc_closure pick_closure_;
+
+  // For intercepting recv_trailing_metadata_ready for the LB policy.
+  grpc_metadata_batch* recv_trailing_metadata_ = nullptr;
+  grpc_closure recv_trailing_metadata_ready_;
+  grpc_closure* original_recv_trailing_metadata_ready_ = nullptr;
+
+  grpc_polling_entity* pollent_ = nullptr;
+
+  // Batches are added to this list when received from above.
+  // They are removed when we are done handling the batch (i.e., when
+  // either we have invoked all of the batch's callbacks or we have
+  // passed the batch down to the subchannel call and are not
+  // intercepting any of its callbacks).
+  PendingBatch pending_batches_[MAX_PENDING_BATCHES] = {};
+  bool pending_send_initial_metadata_ : 1;
+  bool pending_send_message_ : 1;
+  bool pending_send_trailing_metadata_ : 1;
+
+  // Retry state.
+  bool enable_retries_ : 1;
+  bool retry_committed_ : 1;
+  bool last_attempt_got_server_pushback_ : 1;
+  int num_attempts_completed_ = 0;
+  size_t bytes_buffered_for_retry_ = 0;
+  // TODO(roth): Restructure this to eliminate use of ManualConstructor.
+  ManualConstructor<BackOff> retry_backoff_;
+  grpc_timer retry_timer_;
+
+  // The number of pending retriable subchannel batches containing send ops.
+  // We hold a ref to the call stack while this is non-zero, since replay
+  // batches may not complete until after all callbacks have been returned
+  // to the surface, and we need to make sure that the call is not destroyed
+  // until all of these batches have completed.
+  // Note that we actually only need to track replay batches, but it's
+  // easier to track all batches with send ops.
+  int num_pending_retriable_subchannel_send_batches_ = 0;
+
+  // Cached data for retrying send ops.
+  // send_initial_metadata
+  bool seen_send_initial_metadata_ = false;
+  grpc_linked_mdelem* send_initial_metadata_storage_ = nullptr;
+  grpc_metadata_batch send_initial_metadata_;
+  uint32_t send_initial_metadata_flags_;
+  gpr_atm* peer_string_;
+  // send_message
+  // When we get a send_message op, we replace the original byte stream
+  // with a CachingByteStream that caches the slices to a local buffer for
+  // use in retries.
+  // Note: We inline the cache for the first 3 send_message ops and use
+  // dynamic allocation after that.  This number was essentially picked
+  // at random; it could be changed in the future to tune performance.
+  InlinedVector<ByteStreamCache*, 3> send_messages_;
+  // send_trailing_metadata
+  bool seen_send_trailing_metadata_ = false;
+  grpc_linked_mdelem* send_trailing_metadata_storage_ = nullptr;
+  grpc_metadata_batch send_trailing_metadata_;
+};
+
+//
+// ChannelData::SubchannelWrapper
+//
+
+// This class is a wrapper for Subchannel that hides details of the
+// channel's implementation (such as the health check service name and
+// connected subchannel) from the LB policy API.
+//
+// Note that no synchronization is needed here, because even if the
+// underlying subchannel is shared between channels, this wrapper will only
+// be used within one channel, so it will always be synchronized by the
+// control plane combiner.
+class ChannelData::SubchannelWrapper : public SubchannelInterface {
+ public:
+  SubchannelWrapper(ChannelData* chand, Subchannel* subchannel,
+                    grpc_core::UniquePtr<char> health_check_service_name)
+      : SubchannelInterface(&grpc_client_channel_routing_trace),
+        chand_(chand),
+        subchannel_(subchannel),
+        health_check_service_name_(std::move(health_check_service_name)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p: creating subchannel wrapper %p for subchannel %p",
+              chand, this, subchannel_);
+    }
+    GRPC_CHANNEL_STACK_REF(chand_->owning_stack_, "SubchannelWrapper");
+    auto* subchannel_node = subchannel_->channelz_node();
+    if (subchannel_node != nullptr) {
+      auto it = chand_->subchannel_refcount_map_.find(subchannel_);
+      if (it == chand_->subchannel_refcount_map_.end()) {
+        chand_->channelz_node_->AddChildSubchannel(subchannel_node->uuid());
+        it = chand_->subchannel_refcount_map_.emplace(subchannel_, 0).first;
+      }
+      ++it->second;
+    }
+    chand_->subchannel_wrappers_.insert(this);
+  }
+
+  ~SubchannelWrapper() {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p: destroying subchannel wrapper %p for subchannel %p",
+              chand_, this, subchannel_);
+    }
+    chand_->subchannel_wrappers_.erase(this);
+    auto* subchannel_node = subchannel_->channelz_node();
+    if (subchannel_node != nullptr) {
+      auto it = chand_->subchannel_refcount_map_.find(subchannel_);
+      GPR_ASSERT(it != chand_->subchannel_refcount_map_.end());
+      --it->second;
+      if (it->second == 0) {
+        chand_->channelz_node_->RemoveChildSubchannel(subchannel_node->uuid());
+        chand_->subchannel_refcount_map_.erase(it);
+      }
+    }
+    GRPC_SUBCHANNEL_UNREF(subchannel_, "unref from LB");
+    GRPC_CHANNEL_STACK_UNREF(chand_->owning_stack_, "SubchannelWrapper");
+  }
+
+  grpc_connectivity_state CheckConnectivityState() override {
+    RefCountedPtr<ConnectedSubchannel> connected_subchannel;
+    grpc_connectivity_state connectivity_state =
+        subchannel_->CheckConnectivityState(health_check_service_name_.get(),
+                                            &connected_subchannel);
+    MaybeUpdateConnectedSubchannel(std::move(connected_subchannel));
+    return connectivity_state;
+  }
+
+  void WatchConnectivityState(
+      grpc_connectivity_state initial_state,
+      std::unique_ptr<ConnectivityStateWatcherInterface> watcher) override {
+    auto& watcher_wrapper = watcher_map_[watcher.get()];
+    GPR_ASSERT(watcher_wrapper == nullptr);
+    watcher_wrapper = new WatcherWrapper(std::move(watcher),
+                                         Ref(DEBUG_LOCATION, "WatcherWrapper"),
+                                         initial_state);
+    subchannel_->WatchConnectivityState(
+        initial_state,
+        grpc_core::UniquePtr<char>(
+            gpr_strdup(health_check_service_name_.get())),
+        OrphanablePtr<Subchannel::ConnectivityStateWatcherInterface>(
+            watcher_wrapper));
+  }
+
+  void CancelConnectivityStateWatch(
+      ConnectivityStateWatcherInterface* watcher) override {
+    auto it = watcher_map_.find(watcher);
+    GPR_ASSERT(it != watcher_map_.end());
+    subchannel_->CancelConnectivityStateWatch(health_check_service_name_.get(),
+                                              it->second);
+    watcher_map_.erase(it);
+  }
+
+  void AttemptToConnect() override { subchannel_->AttemptToConnect(); }
+
+  void ResetBackoff() override { subchannel_->ResetBackoff(); }
+
+  const grpc_channel_args* channel_args() override {
+    return subchannel_->channel_args();
+  }
+
+  void UpdateHealthCheckServiceName(
+      grpc_core::UniquePtr<char> health_check_service_name) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p: subchannel wrapper %p: updating health check service "
+              "name from \"%s\" to \"%s\"",
+              chand_, this, health_check_service_name_.get(),
+              health_check_service_name.get());
+    }
+    for (auto& p : watcher_map_) {
+      WatcherWrapper*& watcher_wrapper = p.second;
+      // Cancel the current watcher and create a new one using the new
+      // health check service name.
+      // TODO(roth): If there is not already an existing health watch
+      // call for the new name, then the watcher will initially report
+      // state CONNECTING.  If the LB policy is currently reporting
+      // state READY, this may cause it to switch to CONNECTING before
+      // switching back to READY.  This could cause a small delay for
+      // RPCs being started on the channel.  If/when this becomes a
+      // problem, we may be able to handle it by waiting for the new
+      // watcher to report READY before we use it to replace the old one.
+      WatcherWrapper* replacement = watcher_wrapper->MakeReplacement();
+      subchannel_->CancelConnectivityStateWatch(
+          health_check_service_name_.get(), watcher_wrapper);
+      watcher_wrapper = replacement;
+      subchannel_->WatchConnectivityState(
+          replacement->last_seen_state(),
+          grpc_core::UniquePtr<char>(
+              gpr_strdup(health_check_service_name.get())),
+          OrphanablePtr<Subchannel::ConnectivityStateWatcherInterface>(
+              replacement));
+    }
+    // Save the new health check service name.
+    health_check_service_name_ = std::move(health_check_service_name);
+  }
+
+  // Caller must be holding the control-plane combiner.
+  ConnectedSubchannel* connected_subchannel() const {
+    return connected_subchannel_.get();
+  }
+
+  // Caller must be holding the data-plane mutex.
+  ConnectedSubchannel* connected_subchannel_in_data_plane() const {
+    return connected_subchannel_in_data_plane_.get();
+  }
+  void set_connected_subchannel_in_data_plane(
+      RefCountedPtr<ConnectedSubchannel> connected_subchannel) {
+    connected_subchannel_in_data_plane_ = std::move(connected_subchannel);
+  }
+
+ private:
+  // Subchannel and SubchannelInterface have different interfaces for
+  // their respective ConnectivityStateWatcherInterface classes.
+  // The one in Subchannel updates the ConnectedSubchannel along with
+  // the state, whereas the one in SubchannelInterface does not expose
+  // the ConnectedSubchannel.
+  //
+  // This wrapper provides a bridge between the two.  It implements
+  // Subchannel::ConnectivityStateWatcherInterface and wraps
+  // the instance of SubchannelInterface::ConnectivityStateWatcherInterface
+  // that was passed in by the LB policy.  We pass an instance of this
+  // class to the underlying Subchannel, and when we get updates from
+  // the subchannel, we pass those on to the wrapped watcher to return
+  // the update to the LB policy.  This allows us to set the connected
+  // subchannel before passing the result back to the LB policy.
+  class WatcherWrapper : public Subchannel::ConnectivityStateWatcherInterface {
+   public:
+    WatcherWrapper(
+        std::unique_ptr<SubchannelInterface::ConnectivityStateWatcherInterface>
+            watcher,
+        RefCountedPtr<SubchannelWrapper> parent,
+        grpc_connectivity_state initial_state)
+        : watcher_(std::move(watcher)),
+          parent_(std::move(parent)),
+          last_seen_state_(initial_state) {}
+
+    ~WatcherWrapper() { parent_.reset(DEBUG_LOCATION, "WatcherWrapper"); }
+
+    void Orphan() override { Unref(); }
+
+    void OnConnectivityStateChange(
+        grpc_connectivity_state new_state,
+        RefCountedPtr<ConnectedSubchannel> connected_subchannel) override {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p: connectivity change for subchannel wrapper %p "
+                "subchannel %p (connected_subchannel=%p state=%s); "
+                "hopping into combiner",
+                parent_->chand_, parent_.get(), parent_->subchannel_,
+                connected_subchannel.get(), ConnectivityStateName(new_state));
+      }
+      // Will delete itself.
+      new Updater(Ref(), new_state, std::move(connected_subchannel));
+    }
+
+    grpc_pollset_set* interested_parties() override {
+      SubchannelInterface::ConnectivityStateWatcherInterface* watcher =
+          watcher_.get();
+      if (watcher_ == nullptr) watcher = replacement_->watcher_.get();
+      return watcher->interested_parties();
+    }
+
+    WatcherWrapper* MakeReplacement() {
+      auto* replacement =
+          new WatcherWrapper(std::move(watcher_), parent_, last_seen_state_);
+      replacement_ = replacement;
+      return replacement;
+    }
+
+    grpc_connectivity_state last_seen_state() const { return last_seen_state_; }
+
+   private:
+    class Updater {
+     public:
+      Updater(RefCountedPtr<WatcherWrapper> parent,
+              grpc_connectivity_state new_state,
+              RefCountedPtr<ConnectedSubchannel> connected_subchannel)
+          : parent_(std::move(parent)),
+            state_(new_state),
+            connected_subchannel_(std::move(connected_subchannel)) {
+        parent_->parent_->chand_->combiner_->Run(
+            GRPC_CLOSURE_INIT(&closure_, ApplyUpdateInControlPlaneCombiner,
+                              this, nullptr),
+            GRPC_ERROR_NONE);
+      }
+
+     private:
+      static void ApplyUpdateInControlPlaneCombiner(void* arg,
+                                                    grpc_error* /*error*/) {
+        Updater* self = static_cast<Updater*>(arg);
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+          gpr_log(GPR_INFO,
+                  "chand=%p: processing connectivity change in combiner "
+                  "for subchannel wrapper %p subchannel %p "
+                  "(connected_subchannel=%p state=%s): watcher=%p",
+                  self->parent_->parent_->chand_, self->parent_->parent_.get(),
+                  self->parent_->parent_->subchannel_,
+                  self->connected_subchannel_.get(),
+                  ConnectivityStateName(self->state_),
+                  self->parent_->watcher_.get());
+        }
+        // Ignore update if the parent WatcherWrapper has been replaced
+        // since this callback was scheduled.
+        if (self->parent_->watcher_ == nullptr) return;
+        self->parent_->last_seen_state_ = self->state_;
+        self->parent_->parent_->MaybeUpdateConnectedSubchannel(
+            std::move(self->connected_subchannel_));
+        self->parent_->watcher_->OnConnectivityStateChange(self->state_);
+        delete self;
+      }
+
+      RefCountedPtr<WatcherWrapper> parent_;
+      grpc_connectivity_state state_;
+      RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+      grpc_closure closure_;
+    };
+
+    std::unique_ptr<SubchannelInterface::ConnectivityStateWatcherInterface>
+        watcher_;
+    RefCountedPtr<SubchannelWrapper> parent_;
+    grpc_connectivity_state last_seen_state_;
+    WatcherWrapper* replacement_ = nullptr;
+  };
+
+  void MaybeUpdateConnectedSubchannel(
+      RefCountedPtr<ConnectedSubchannel> connected_subchannel) {
+    // Update the connected subchannel only if the channel is not shutting
+    // down.  This is because once the channel is shutting down, we
+    // ignore picker updates from the LB policy, which means that
+    // UpdateStateAndPickerLocked() will never process the entries
+    // in chand_->pending_subchannel_updates_.  So we don't want to add
+    // entries there that will never be processed, since that would
+    // leave dangling refs to the channel and prevent its destruction.
+    grpc_error* disconnect_error = chand_->disconnect_error();
+    if (disconnect_error != GRPC_ERROR_NONE) return;
+    // Not shutting down, so do the update.
+    if (connected_subchannel_ != connected_subchannel) {
+      connected_subchannel_ = std::move(connected_subchannel);
+      // Record the new connected subchannel so that it can be updated
+      // in the data plane mutex the next time the picker is updated.
+      chand_->pending_subchannel_updates_[Ref(
+          DEBUG_LOCATION, "ConnectedSubchannelUpdate")] = connected_subchannel_;
+    }
+  }
+
+  ChannelData* chand_;
+  Subchannel* subchannel_;
+  grpc_core::UniquePtr<char> health_check_service_name_;
+  // Maps from the address of the watcher passed to us by the LB policy
+  // to the address of the WrapperWatcher that we passed to the underlying
+  // subchannel.  This is needed so that when the LB policy calls
+  // CancelConnectivityStateWatch() with its watcher, we know the
+  // corresponding WrapperWatcher to cancel on the underlying subchannel.
+  std::map<ConnectivityStateWatcherInterface*, WatcherWrapper*> watcher_map_;
+  // To be accessed only in the control plane combiner.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  // To be accessed only in the data plane mutex.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_in_data_plane_;
+};
+
+//
+// ChannelData::ExternalConnectivityWatcher
+//
+
+ChannelData::ExternalConnectivityWatcher::ExternalConnectivityWatcher(
+    ChannelData* chand, grpc_polling_entity pollent,
+    grpc_connectivity_state* state, grpc_closure* on_complete,
+    grpc_closure* watcher_timer_init)
+    : chand_(chand),
+      pollent_(pollent),
+      initial_state_(*state),
+      state_(state),
+      on_complete_(on_complete),
+      watcher_timer_init_(watcher_timer_init) {
+  grpc_polling_entity_add_to_pollset_set(&pollent_,
+                                         chand_->interested_parties_);
+  GRPC_CHANNEL_STACK_REF(chand_->owning_stack_, "ExternalConnectivityWatcher");
+  chand_->combiner_->Run(
+      GRPC_CLOSURE_INIT(&add_closure_, AddWatcherLocked, this, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+ChannelData::ExternalConnectivityWatcher::~ExternalConnectivityWatcher() {
+  grpc_polling_entity_del_from_pollset_set(&pollent_,
+                                           chand_->interested_parties_);
+  GRPC_CHANNEL_STACK_UNREF(chand_->owning_stack_,
+                           "ExternalConnectivityWatcher");
+}
+
+void ChannelData::ExternalConnectivityWatcher::Notify(
+    grpc_connectivity_state state) {
+  bool done = false;
+  if (!done_.CompareExchangeStrong(&done, true, MemoryOrder::RELAXED,
+                                   MemoryOrder::RELAXED)) {
+    return;  // Already done.
+  }
+  // Remove external watcher.
+  chand_->RemoveExternalConnectivityWatcher(on_complete_, /*cancel=*/false);
+  // Report new state to the user.
+  *state_ = state;
+  ExecCtx::Run(DEBUG_LOCATION, on_complete_, GRPC_ERROR_NONE);
+  // Hop back into the combiner to clean up.
+  // Not needed in state SHUTDOWN, because the tracker will
+  // automatically remove all watchers in that case.
+  if (state != GRPC_CHANNEL_SHUTDOWN) {
+    chand_->combiner_->Run(
+        GRPC_CLOSURE_INIT(&remove_closure_, RemoveWatcherLocked, this, nullptr),
+        GRPC_ERROR_NONE);
+  }
+}
+
+void ChannelData::ExternalConnectivityWatcher::Cancel() {
+  bool done = false;
+  if (!done_.CompareExchangeStrong(&done, true, MemoryOrder::RELAXED,
+                                   MemoryOrder::RELAXED)) {
+    return;  // Already done.
+  }
+  ExecCtx::Run(DEBUG_LOCATION, on_complete_, GRPC_ERROR_CANCELLED);
+  // Hop back into the combiner to clean up.
+  chand_->combiner_->Run(
+      GRPC_CLOSURE_INIT(&remove_closure_, RemoveWatcherLocked, this, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void ChannelData::ExternalConnectivityWatcher::AddWatcherLocked(
+    void* arg, grpc_error* /*ignored*/) {
+  ExternalConnectivityWatcher* self =
+      static_cast<ExternalConnectivityWatcher*>(arg);
+  Closure::Run(DEBUG_LOCATION, self->watcher_timer_init_, GRPC_ERROR_NONE);
+  // Add new watcher.
+  self->chand_->state_tracker_.AddWatcher(
+      self->initial_state_,
+      OrphanablePtr<ConnectivityStateWatcherInterface>(self));
+}
+
+void ChannelData::ExternalConnectivityWatcher::RemoveWatcherLocked(
+    void* arg, grpc_error* /*ignored*/) {
+  ExternalConnectivityWatcher* self =
+      static_cast<ExternalConnectivityWatcher*>(arg);
+  self->chand_->state_tracker_.RemoveWatcher(self);
+}
+
+//
+// ChannelData::ConnectivityWatcherAdder
+//
+
+class ChannelData::ConnectivityWatcherAdder {
+ public:
+  ConnectivityWatcherAdder(
+      ChannelData* chand, grpc_connectivity_state initial_state,
+      OrphanablePtr<AsyncConnectivityStateWatcherInterface> watcher)
+      : chand_(chand),
+        initial_state_(initial_state),
+        watcher_(std::move(watcher)) {
+    GRPC_CHANNEL_STACK_REF(chand_->owning_stack_, "ConnectivityWatcherAdder");
+    chand_->combiner_->Run(
+        GRPC_CLOSURE_INIT(&closure_,
+                          &ConnectivityWatcherAdder::AddWatcherLocked, this,
+                          nullptr),
+        GRPC_ERROR_NONE);
+  }
+
+ private:
+  static void AddWatcherLocked(void* arg, grpc_error* /*error*/) {
+    ConnectivityWatcherAdder* self =
+        static_cast<ConnectivityWatcherAdder*>(arg);
+    self->chand_->state_tracker_.AddWatcher(self->initial_state_,
+                                            std::move(self->watcher_));
+    GRPC_CHANNEL_STACK_UNREF(self->chand_->owning_stack_,
+                             "ConnectivityWatcherAdder");
+    delete self;
+  }
+
+  ChannelData* chand_;
+  grpc_connectivity_state initial_state_;
+  OrphanablePtr<AsyncConnectivityStateWatcherInterface> watcher_;
+  grpc_closure closure_;
+};
+
+//
+// ChannelData::ConnectivityWatcherRemover
+//
+
+class ChannelData::ConnectivityWatcherRemover {
+ public:
+  ConnectivityWatcherRemover(ChannelData* chand,
+                             AsyncConnectivityStateWatcherInterface* watcher)
+      : chand_(chand), watcher_(watcher) {
+    GRPC_CHANNEL_STACK_REF(chand_->owning_stack_, "ConnectivityWatcherRemover");
+    chand_->combiner_->Run(
+        GRPC_CLOSURE_INIT(&closure_,
+                          &ConnectivityWatcherRemover::RemoveWatcherLocked,
+                          this, nullptr),
+        GRPC_ERROR_NONE);
+  }
+
+ private:
+  static void RemoveWatcherLocked(void* arg, grpc_error* /*error*/) {
+    ConnectivityWatcherRemover* self =
+        static_cast<ConnectivityWatcherRemover*>(arg);
+    self->chand_->state_tracker_.RemoveWatcher(self->watcher_);
+    GRPC_CHANNEL_STACK_UNREF(self->chand_->owning_stack_,
+                             "ConnectivityWatcherRemover");
+    delete self;
+  }
+
+  ChannelData* chand_;
+  AsyncConnectivityStateWatcherInterface* watcher_;
+  grpc_closure closure_;
+};
+
+//
+// ChannelData::ClientChannelControlHelper
+//
+
+class ChannelData::ClientChannelControlHelper
+    : public LoadBalancingPolicy::ChannelControlHelper {
+ public:
+  explicit ClientChannelControlHelper(ChannelData* chand) : chand_(chand) {
+    GRPC_CHANNEL_STACK_REF(chand_->owning_stack_, "ClientChannelControlHelper");
+  }
+
+  ~ClientChannelControlHelper() override {
+    GRPC_CHANNEL_STACK_UNREF(chand_->owning_stack_,
+                             "ClientChannelControlHelper");
+  }
+
+  RefCountedPtr<SubchannelInterface> CreateSubchannel(
+      const grpc_channel_args& args) override {
+    bool inhibit_health_checking = grpc_channel_arg_get_bool(
+        grpc_channel_args_find(&args, GRPC_ARG_INHIBIT_HEALTH_CHECKING), false);
+    grpc_core::UniquePtr<char> health_check_service_name;
+    if (!inhibit_health_checking) {
+      health_check_service_name.reset(
+          gpr_strdup(chand_->health_check_service_name_.get()));
+    }
+    static const char* args_to_remove[] = {
+        GRPC_ARG_INHIBIT_HEALTH_CHECKING,
+        GRPC_ARG_CHANNELZ_CHANNEL_NODE,
+    };
+    grpc_arg arg = SubchannelPoolInterface::CreateChannelArg(
+        chand_->subchannel_pool_.get());
+    grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+        &args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), &arg, 1);
+    Subchannel* subchannel =
+        chand_->client_channel_factory_->CreateSubchannel(new_args);
+    grpc_channel_args_destroy(new_args);
+    if (subchannel == nullptr) return nullptr;
+    return MakeRefCounted<SubchannelWrapper>(
+        chand_, subchannel, std::move(health_check_service_name));
+  }
+
+  void UpdateState(
+      grpc_connectivity_state state,
+      std::unique_ptr<LoadBalancingPolicy::SubchannelPicker> picker) override {
+    grpc_error* disconnect_error = chand_->disconnect_error();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      const char* extra = disconnect_error == GRPC_ERROR_NONE
+                              ? ""
+                              : " (ignoring -- channel shutting down)";
+      gpr_log(GPR_INFO, "chand=%p: update: state=%s picker=%p%s", chand_,
+              ConnectivityStateName(state), picker.get(), extra);
+    }
+    // Do update only if not shutting down.
+    if (disconnect_error == GRPC_ERROR_NONE) {
+      chand_->UpdateStateAndPickerLocked(state, "helper", std::move(picker));
+    }
+  }
+
+  // No-op -- we should never get this from ResolvingLoadBalancingPolicy.
+  void RequestReresolution() override {}
+
+  void AddTraceEvent(TraceSeverity severity, StringView message) override {
+    if (chand_->channelz_node_ != nullptr) {
+      chand_->channelz_node_->AddTraceEvent(
+          ConvertSeverityEnum(severity),
+          grpc_slice_from_copied_buffer(message.data(), message.size()));
+    }
+  }
+
+ private:
+  static channelz::ChannelTrace::Severity ConvertSeverityEnum(
+      TraceSeverity severity) {
+    if (severity == TRACE_INFO) return channelz::ChannelTrace::Info;
+    if (severity == TRACE_WARNING) return channelz::ChannelTrace::Warning;
+    return channelz::ChannelTrace::Error;
+  }
+
+  ChannelData* chand_;
+};
+
+//
+// ChannelData implementation
+//
+
+grpc_error* ChannelData::Init(grpc_channel_element* elem,
+                              grpc_channel_element_args* args) {
+  GPR_ASSERT(args->is_last);
+  GPR_ASSERT(elem->filter == &grpc_client_channel_filter);
+  grpc_error* error = GRPC_ERROR_NONE;
+  new (elem->channel_data) ChannelData(args, &error);
+  return error;
+}
+
+void ChannelData::Destroy(grpc_channel_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->~ChannelData();
+}
+
+bool GetEnableRetries(const grpc_channel_args* args) {
+  return grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args, GRPC_ARG_ENABLE_RETRIES), true);
+}
+
+size_t GetMaxPerRpcRetryBufferSize(const grpc_channel_args* args) {
+  return static_cast<size_t>(grpc_channel_arg_get_integer(
+      grpc_channel_args_find(args, GRPC_ARG_PER_RPC_RETRY_BUFFER_SIZE),
+      {DEFAULT_PER_RPC_RETRY_BUFFER_SIZE, 0, INT_MAX}));
+}
+
+RefCountedPtr<SubchannelPoolInterface> GetSubchannelPool(
+    const grpc_channel_args* args) {
+  const bool use_local_subchannel_pool = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args, GRPC_ARG_USE_LOCAL_SUBCHANNEL_POOL), false);
+  if (use_local_subchannel_pool) {
+    return MakeRefCounted<LocalSubchannelPool>();
+  }
+  return GlobalSubchannelPool::instance();
+}
+
+channelz::ChannelNode* GetChannelzNode(const grpc_channel_args* args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_CHANNELZ_CHANNEL_NODE);
+  if (arg != nullptr && arg->type == GRPC_ARG_POINTER) {
+    return static_cast<channelz::ChannelNode*>(arg->value.pointer.p);
+  }
+  return nullptr;
+}
+
+ChannelData::ChannelData(grpc_channel_element_args* args, grpc_error** error)
+    : deadline_checking_enabled_(
+          grpc_deadline_checking_enabled(args->channel_args)),
+      enable_retries_(GetEnableRetries(args->channel_args)),
+      per_rpc_retry_buffer_size_(
+          GetMaxPerRpcRetryBufferSize(args->channel_args)),
+      owning_stack_(args->channel_stack),
+      client_channel_factory_(
+          ClientChannelFactory::GetFromChannelArgs(args->channel_args)),
+      channelz_node_(GetChannelzNode(args->channel_args)),
+      combiner_(grpc_combiner_create()),
+      interested_parties_(grpc_pollset_set_create()),
+      subchannel_pool_(GetSubchannelPool(args->channel_args)),
+      state_tracker_("client_channel", GRPC_CHANNEL_IDLE),
+      disconnect_error_(GRPC_ERROR_NONE) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p: creating client_channel for channel stack %p",
+            this, owning_stack_);
+  }
+  // Initialize data members.
+  gpr_mu_init(&info_mu_);
+  // Start backup polling.
+  grpc_client_channel_start_backup_polling(interested_parties_);
+  // Check client channel factory.
+  if (client_channel_factory_ == nullptr) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Missing client channel factory in args for client channel filter");
+    return;
+  }
+  // Get server name to resolve, using proxy mapper if needed.
+  const char* server_uri = grpc_channel_arg_get_string(
+      grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVER_URI));
+  if (server_uri == nullptr) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "server URI channel arg missing or wrong type in client channel "
+        "filter");
+    return;
+  }
+  // Get default service config
+  const char* service_config_json = grpc_channel_arg_get_string(
+      grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVICE_CONFIG));
+  if (service_config_json != nullptr) {
+    *error = GRPC_ERROR_NONE;
+    default_service_config_ = ServiceConfig::Create(service_config_json, error);
+    if (*error != GRPC_ERROR_NONE) {
+      default_service_config_.reset();
+      return;
+    }
+  }
+  grpc_uri* uri = grpc_uri_parse(server_uri, true);
+  if (uri != nullptr && uri->path[0] != '\0') {
+    server_name_.reset(
+        gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path));
+  }
+  grpc_uri_destroy(uri);
+  char* proxy_name = nullptr;
+  grpc_channel_args* new_args = nullptr;
+  ProxyMapperRegistry::MapName(server_uri, args->channel_args, &proxy_name,
+                               &new_args);
+  target_uri_.reset(proxy_name != nullptr ? proxy_name
+                                          : gpr_strdup(server_uri));
+  channel_args_ = new_args != nullptr
+                      ? new_args
+                      : grpc_channel_args_copy(args->channel_args);
+  if (!ResolverRegistry::IsValidTarget(target_uri_.get())) {
+    *error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("the target uri is not valid.");
+    return;
+  }
+  *error = GRPC_ERROR_NONE;
+}
+
+ChannelData::~ChannelData() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p: destroying channel", this);
+  }
+  DestroyResolvingLoadBalancingPolicyLocked();
+  grpc_channel_args_destroy(channel_args_);
+  // Stop backup polling.
+  grpc_client_channel_stop_backup_polling(interested_parties_);
+  grpc_pollset_set_destroy(interested_parties_);
+  GRPC_COMBINER_UNREF(combiner_, "client_channel");
+  GRPC_ERROR_UNREF(disconnect_error_.Load(MemoryOrder::RELAXED));
+  gpr_mu_destroy(&info_mu_);
+}
+
+void ChannelData::UpdateStateAndPickerLocked(
+    grpc_connectivity_state state, const char* reason,
+    std::unique_ptr<LoadBalancingPolicy::SubchannelPicker> picker) {
+  // Clean the control plane when entering IDLE.
+  if (picker_ == nullptr) {
+    health_check_service_name_.reset();
+    saved_service_config_.reset();
+    received_first_resolver_result_ = false;
+  }
+  // Update connectivity state.
+  state_tracker_.SetState(state, reason);
+  if (channelz_node_ != nullptr) {
+    channelz_node_->SetConnectivityState(state);
+    channelz_node_->AddTraceEvent(
+        channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string(
+            channelz::ChannelNode::GetChannelConnectivityStateChangeString(
+                state)));
+  }
+  // Grab data plane lock to do subchannel updates and update the picker.
+  //
+  // Note that we want to minimize the work done while holding the data
+  // plane lock, to keep the critical section small.  So, for all of the
+  // objects that we might wind up unreffing here, we actually hold onto
+  // the refs until after we release the lock, and then unref them at
+  // that point.  This includes the following:
+  // - refs to subchannel wrappers in the keys of pending_subchannel_updates_
+  // - ref stored in retry_throttle_data_
+  // - ref stored in service_config_
+  // - ownership of the existing picker in picker_
+  RefCountedPtr<ServerRetryThrottleData> retry_throttle_data_to_unref;
+  RefCountedPtr<ServiceConfig> service_config_to_unref;
+  {
+    MutexLock lock(&data_plane_mu_);
+    // Handle subchannel updates.
+    for (auto& p : pending_subchannel_updates_) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p: updating subchannel wrapper %p data plane "
+                "connected_subchannel to %p",
+                this, p.first.get(), p.second.get());
+      }
+      // Note: We do not remove the entry from pending_subchannel_updates_
+      // here, since this would unref the subchannel wrapper; instead,
+      // we wait until we've released the lock to clear the map.
+      p.first->set_connected_subchannel_in_data_plane(std::move(p.second));
+    }
+    // Swap out the picker.
+    // Note: Original value will be destroyed after the lock is released.
+    picker_.swap(picker);
+    // Clean the data plane if the updated picker is nullptr.
+    if (picker_ == nullptr) {
+      received_service_config_data_ = false;
+      // Note: We save the objects to unref until after the lock is released.
+      retry_throttle_data_to_unref = std::move(retry_throttle_data_);
+      service_config_to_unref = std::move(service_config_);
+    }
+    // Re-process queued picks.
+    for (QueuedPick* pick = queued_picks_; pick != nullptr; pick = pick->next) {
+      grpc_call_element* elem = pick->elem;
+      CallData* calld = static_cast<CallData*>(elem->call_data);
+      grpc_error* error = GRPC_ERROR_NONE;
+      if (calld->PickSubchannelLocked(elem, &error)) {
+        calld->AsyncPickDone(elem, error);
+      }
+    }
+  }
+  // Clear the pending update map after releasing the lock, to keep the
+  // critical section small.
+  pending_subchannel_updates_.clear();
+}
+
+void ChannelData::UpdateServiceConfigLocked(
+    RefCountedPtr<ServerRetryThrottleData> retry_throttle_data,
+    RefCountedPtr<ServiceConfig> service_config) {
+  // Grab data plane lock to update service config.
+  //
+  // We defer unreffing the old values (and deallocating memory) until
+  // after releasing the lock to keep the critical section small.
+  {
+    MutexLock lock(&data_plane_mu_);
+    // Update service config.
+    received_service_config_data_ = true;
+    // Old values will be unreffed after lock is released.
+    retry_throttle_data_.swap(retry_throttle_data);
+    service_config_.swap(service_config);
+    // Apply service config to queued picks.
+    for (QueuedPick* pick = queued_picks_; pick != nullptr; pick = pick->next) {
+      CallData* calld = static_cast<CallData*>(pick->elem->call_data);
+      calld->MaybeApplyServiceConfigToCallLocked(pick->elem);
+    }
+  }
+  // Old values will be unreffed after lock is released when they go out
+  // of scope.
+}
+
+void ChannelData::CreateResolvingLoadBalancingPolicyLocked() {
+  // Instantiate resolving LB policy.
+  LoadBalancingPolicy::Args lb_args;
+  lb_args.combiner = combiner_;
+  lb_args.channel_control_helper =
+      absl::make_unique<ClientChannelControlHelper>(this);
+  lb_args.args = channel_args_;
+  grpc_core::UniquePtr<char> target_uri(gpr_strdup(target_uri_.get()));
+  resolving_lb_policy_.reset(new ResolvingLoadBalancingPolicy(
+      std::move(lb_args), &grpc_client_channel_routing_trace,
+      std::move(target_uri), ProcessResolverResultLocked, this));
+  grpc_pollset_set_add_pollset_set(resolving_lb_policy_->interested_parties(),
+                                   interested_parties_);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p: created resolving_lb_policy=%p", this,
+            resolving_lb_policy_.get());
+  }
+}
+
+void ChannelData::DestroyResolvingLoadBalancingPolicyLocked() {
+  if (resolving_lb_policy_ != nullptr) {
+    grpc_pollset_set_del_pollset_set(resolving_lb_policy_->interested_parties(),
+                                     interested_parties_);
+    resolving_lb_policy_.reset();
+  }
+}
+
+void ChannelData::ProcessLbPolicy(
+    const Resolver::Result& resolver_result,
+    const internal::ClientChannelGlobalParsedConfig* parsed_service_config,
+    RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config) {
+  // Prefer the LB policy config found in the service config.
+  if (parsed_service_config != nullptr &&
+      parsed_service_config->parsed_lb_config() != nullptr) {
+    *lb_policy_config = parsed_service_config->parsed_lb_config();
+    return;
+  }
+  // Try the deprecated LB policy name from the service config.
+  // If not, try the setting from channel args.
+  const char* policy_name = nullptr;
+  if (parsed_service_config != nullptr &&
+      parsed_service_config->parsed_deprecated_lb_policy() != nullptr) {
+    policy_name = parsed_service_config->parsed_deprecated_lb_policy();
+  } else {
+    const grpc_arg* channel_arg =
+        grpc_channel_args_find(resolver_result.args, GRPC_ARG_LB_POLICY_NAME);
+    policy_name = grpc_channel_arg_get_string(channel_arg);
+  }
+  // Special case: If at least one balancer address is present, we use
+  // the grpclb policy, regardless of what the resolver has returned.
+  bool found_balancer_address = false;
+  for (size_t i = 0; i < resolver_result.addresses.size(); ++i) {
+    const ServerAddress& address = resolver_result.addresses[i];
+    if (address.IsBalancer()) {
+      found_balancer_address = true;
+      break;
+    }
+  }
+  if (found_balancer_address) {
+    if (policy_name != nullptr && strcmp(policy_name, "grpclb") != 0) {
+      gpr_log(GPR_INFO,
+              "resolver requested LB policy %s but provided at least one "
+              "balancer address -- forcing use of grpclb LB policy",
+              policy_name);
+    }
+    policy_name = "grpclb";
+  }
+  // Use pick_first if nothing was specified and we didn't select grpclb
+  // above.
+  if (policy_name == nullptr) policy_name = "pick_first";
+  // Now that we have the policy name, construct an empty config for it.
+  Json config_json = Json::Array{Json::Object{
+      {policy_name, Json::Object{}},
+  }};
+  grpc_error* parse_error = GRPC_ERROR_NONE;
+  *lb_policy_config = LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(
+      config_json, &parse_error);
+  // The policy name came from one of three places:
+  // - The deprecated loadBalancingPolicy field in the service config,
+  //   in which case the code in ClientChannelServiceConfigParser
+  //   already verified that the policy does not require a config.
+  // - One of the hard-coded values here, all of which are known to not
+  //   require a config.
+  // - A channel arg, in which case the application did something that
+  //   is a misuse of our API.
+  // In the first two cases, these assertions will always be true.  In
+  // the last case, this is probably fine for now.
+  // TODO(roth): If the last case becomes a problem, add better error
+  // handling here.
+  GPR_ASSERT(*lb_policy_config != nullptr);
+  GPR_ASSERT(parse_error == GRPC_ERROR_NONE);
+}
+
+// Synchronous callback from ResolvingLoadBalancingPolicy to process a
+// resolver result update.
+bool ChannelData::ProcessResolverResultLocked(
+    void* arg, const Resolver::Result& result,
+    RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config,
+    grpc_error** service_config_error, bool* no_valid_service_config) {
+  ChannelData* chand = static_cast<ChannelData*>(arg);
+  RefCountedPtr<ServiceConfig> service_config;
+  // If resolver did not return a service config or returned an invalid service
+  // config, we need a fallback service config.
+  if (result.service_config_error != GRPC_ERROR_NONE) {
+    // If the service config was invalid, then fallback to the saved service
+    // config. If there is no saved config either, use the default service
+    // config.
+    if (chand->saved_service_config_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p: resolver returned invalid service config. "
+                "Continuing to use previous service config.",
+                chand);
+      }
+      service_config = chand->saved_service_config_;
+    } else if (chand->default_service_config_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p: resolver returned invalid service config. Using "
+                "default service config provided by client API.",
+                chand);
+      }
+      service_config = chand->default_service_config_;
+    }
+  } else if (result.service_config == nullptr) {
+    if (chand->default_service_config_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p: resolver returned no service config. Using default "
+                "service config provided by client API.",
+                chand);
+      }
+      service_config = chand->default_service_config_;
+    }
+  } else {
+    service_config = result.service_config;
+  }
+  *service_config_error = GRPC_ERROR_REF(result.service_config_error);
+  if (service_config == nullptr &&
+      result.service_config_error != GRPC_ERROR_NONE) {
+    *no_valid_service_config = true;
+    return false;
+  }
+  // Process service config.
+  grpc_core::UniquePtr<char> service_config_json;
+  const internal::ClientChannelGlobalParsedConfig* parsed_service_config =
+      nullptr;
+  if (service_config != nullptr) {
+    parsed_service_config =
+        static_cast<const internal::ClientChannelGlobalParsedConfig*>(
+            service_config->GetGlobalParsedConfig(
+                internal::ClientChannelServiceConfigParser::ParserIndex()));
+  }
+  // Check if the config has changed.
+  const bool service_config_changed =
+      ((service_config == nullptr) !=
+       (chand->saved_service_config_ == nullptr)) ||
+      (service_config != nullptr &&
+       service_config->json_string() !=
+           chand->saved_service_config_->json_string());
+  if (service_config_changed) {
+    service_config_json.reset(gpr_strdup(
+        service_config != nullptr ? service_config->json_string().c_str()
+                                  : ""));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p: resolver returned updated service config: \"%s\"",
+              chand, service_config_json.get());
+    }
+    // Save health check service name.
+    if (service_config != nullptr) {
+      chand->health_check_service_name_.reset(
+          gpr_strdup(parsed_service_config->health_check_service_name()));
+    } else {
+      chand->health_check_service_name_.reset();
+    }
+    // Update health check service name used by existing subchannel wrappers.
+    for (auto* subchannel_wrapper : chand->subchannel_wrappers_) {
+      subchannel_wrapper->UpdateHealthCheckServiceName(
+          grpc_core::UniquePtr<char>(
+              gpr_strdup(chand->health_check_service_name_.get())));
+    }
+    // Save service config.
+    chand->saved_service_config_ = std::move(service_config);
+  }
+  // We want to set the service config at least once. This should not really be
+  // needed, but we are doing it as a defensive approach. This can be removed,
+  // if we feel it is unnecessary.
+  if (service_config_changed || !chand->received_first_resolver_result_) {
+    chand->received_first_resolver_result_ = true;
+    RefCountedPtr<ServerRetryThrottleData> retry_throttle_data;
+    if (parsed_service_config != nullptr) {
+      Optional<internal::ClientChannelGlobalParsedConfig::RetryThrottling>
+          retry_throttle_config = parsed_service_config->retry_throttling();
+      if (retry_throttle_config.has_value()) {
+        retry_throttle_data =
+            internal::ServerRetryThrottleMap::GetDataForServer(
+                chand->server_name_.get(),
+                retry_throttle_config.value().max_milli_tokens,
+                retry_throttle_config.value().milli_token_ratio);
+      }
+    }
+    chand->UpdateServiceConfigLocked(std::move(retry_throttle_data),
+                                     chand->saved_service_config_);
+  }
+  chand->ProcessLbPolicy(result, parsed_service_config, lb_policy_config);
+  grpc_core::UniquePtr<char> lb_policy_name(
+      gpr_strdup((*lb_policy_config)->name()));
+  // Swap out the data used by GetChannelInfo().
+  {
+    MutexLock lock(&chand->info_mu_);
+    chand->info_lb_policy_name_ = std::move(lb_policy_name);
+    if (service_config_json != nullptr) {
+      chand->info_service_config_json_ = std::move(service_config_json);
+    }
+  }
+  // Return results.
+  return service_config_changed;
+}
+
+grpc_error* ChannelData::DoPingLocked(grpc_transport_op* op) {
+  if (state_tracker_.state() != GRPC_CHANNEL_READY) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("channel not connected");
+  }
+  LoadBalancingPolicy::PickResult result =
+      picker_->Pick(LoadBalancingPolicy::PickArgs());
+  ConnectedSubchannel* connected_subchannel = nullptr;
+  if (result.subchannel != nullptr) {
+    SubchannelWrapper* subchannel =
+        static_cast<SubchannelWrapper*>(result.subchannel.get());
+    connected_subchannel = subchannel->connected_subchannel();
+  }
+  if (connected_subchannel != nullptr) {
+    connected_subchannel->Ping(op->send_ping.on_initiate, op->send_ping.on_ack);
+  } else {
+    if (result.error == GRPC_ERROR_NONE) {
+      result.error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "LB policy dropped call on ping");
+    }
+  }
+  return result.error;
+}
+
+void ChannelData::StartTransportOpLocked(void* arg, grpc_error* /*ignored*/) {
+  grpc_transport_op* op = static_cast<grpc_transport_op*>(arg);
+  grpc_channel_element* elem =
+      static_cast<grpc_channel_element*>(op->handler_private.extra_arg);
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  // Connectivity watch.
+  if (op->start_connectivity_watch != nullptr) {
+    chand->state_tracker_.AddWatcher(op->start_connectivity_watch_state,
+                                     std::move(op->start_connectivity_watch));
+  }
+  if (op->stop_connectivity_watch != nullptr) {
+    chand->state_tracker_.RemoveWatcher(op->stop_connectivity_watch);
+  }
+  // Ping.
+  if (op->send_ping.on_initiate != nullptr || op->send_ping.on_ack != nullptr) {
+    grpc_error* error = chand->DoPingLocked(op);
+    if (error != GRPC_ERROR_NONE) {
+      ExecCtx::Run(DEBUG_LOCATION, op->send_ping.on_initiate,
+                   GRPC_ERROR_REF(error));
+      ExecCtx::Run(DEBUG_LOCATION, op->send_ping.on_ack, error);
+    }
+    op->bind_pollset = nullptr;
+    op->send_ping.on_initiate = nullptr;
+    op->send_ping.on_ack = nullptr;
+  }
+  // Reset backoff.
+  if (op->reset_connect_backoff) {
+    if (chand->resolving_lb_policy_ != nullptr) {
+      chand->resolving_lb_policy_->ResetBackoffLocked();
+    }
+  }
+  // Disconnect or enter IDLE.
+  if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p: disconnect_with_error: %s", chand,
+              grpc_error_string(op->disconnect_with_error));
+    }
+    chand->DestroyResolvingLoadBalancingPolicyLocked();
+    intptr_t value;
+    if (grpc_error_get_int(op->disconnect_with_error,
+                           GRPC_ERROR_INT_CHANNEL_CONNECTIVITY_STATE, &value) &&
+        static_cast<grpc_connectivity_state>(value) == GRPC_CHANNEL_IDLE) {
+      if (chand->disconnect_error() == GRPC_ERROR_NONE) {
+        // Enter IDLE state.
+        chand->UpdateStateAndPickerLocked(GRPC_CHANNEL_IDLE,
+                                          "channel entering IDLE", nullptr);
+      }
+      GRPC_ERROR_UNREF(op->disconnect_with_error);
+    } else {
+      // Disconnect.
+      GPR_ASSERT(chand->disconnect_error_.Load(MemoryOrder::RELAXED) ==
+                 GRPC_ERROR_NONE);
+      chand->disconnect_error_.Store(op->disconnect_with_error,
+                                     MemoryOrder::RELEASE);
+      chand->UpdateStateAndPickerLocked(
+          GRPC_CHANNEL_SHUTDOWN, "shutdown from API",
+          absl::make_unique<LoadBalancingPolicy::TransientFailurePicker>(
+              GRPC_ERROR_REF(op->disconnect_with_error)));
+    }
+  }
+  GRPC_CHANNEL_STACK_UNREF(chand->owning_stack_, "start_transport_op");
+  ExecCtx::Run(DEBUG_LOCATION, op->on_consumed, GRPC_ERROR_NONE);
+}
+
+void ChannelData::StartTransportOp(grpc_channel_element* elem,
+                                   grpc_transport_op* op) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  GPR_ASSERT(op->set_accept_stream == false);
+  // Handle bind_pollset.
+  if (op->bind_pollset != nullptr) {
+    grpc_pollset_set_add_pollset(chand->interested_parties_, op->bind_pollset);
+  }
+  // Pop into control plane combiner for remaining ops.
+  op->handler_private.extra_arg = elem;
+  GRPC_CHANNEL_STACK_REF(chand->owning_stack_, "start_transport_op");
+  chand->combiner_->Run(
+      GRPC_CLOSURE_INIT(&op->handler_private.closure,
+                        ChannelData::StartTransportOpLocked, op, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void ChannelData::GetChannelInfo(grpc_channel_element* elem,
+                                 const grpc_channel_info* info) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  MutexLock lock(&chand->info_mu_);
+  if (info->lb_policy_name != nullptr) {
+    *info->lb_policy_name = gpr_strdup(chand->info_lb_policy_name_.get());
+  }
+  if (info->service_config_json != nullptr) {
+    *info->service_config_json =
+        gpr_strdup(chand->info_service_config_json_.get());
+  }
+}
+
+void ChannelData::AddQueuedPick(QueuedPick* pick,
+                                grpc_polling_entity* pollent) {
+  // Add call to queued picks list.
+  pick->next = queued_picks_;
+  queued_picks_ = pick;
+  // Add call's pollent to channel's interested_parties, so that I/O
+  // can be done under the call's CQ.
+  grpc_polling_entity_add_to_pollset_set(pollent, interested_parties_);
+}
+
+void ChannelData::RemoveQueuedPick(QueuedPick* to_remove,
+                                   grpc_polling_entity* pollent) {
+  // Remove call's pollent from channel's interested_parties.
+  grpc_polling_entity_del_from_pollset_set(pollent, interested_parties_);
+  // Remove from queued picks list.
+  for (QueuedPick** pick = &queued_picks_; *pick != nullptr;
+       pick = &(*pick)->next) {
+    if (*pick == to_remove) {
+      *pick = to_remove->next;
+      return;
+    }
+  }
+}
+
+RefCountedPtr<ConnectedSubchannel>
+ChannelData::GetConnectedSubchannelInDataPlane(
+    SubchannelInterface* subchannel) const {
+  SubchannelWrapper* subchannel_wrapper =
+      static_cast<SubchannelWrapper*>(subchannel);
+  ConnectedSubchannel* connected_subchannel =
+      subchannel_wrapper->connected_subchannel_in_data_plane();
+  if (connected_subchannel == nullptr) return nullptr;
+  return connected_subchannel->Ref();
+}
+
+void ChannelData::TryToConnectLocked(void* arg, grpc_error* /*error_ignored*/) {
+  auto* chand = static_cast<ChannelData*>(arg);
+  if (chand->resolving_lb_policy_ != nullptr) {
+    chand->resolving_lb_policy_->ExitIdleLocked();
+  } else {
+    chand->CreateResolvingLoadBalancingPolicyLocked();
+  }
+  GRPC_CHANNEL_STACK_UNREF(chand->owning_stack_, "TryToConnect");
+}
+
+grpc_connectivity_state ChannelData::CheckConnectivityState(
+    bool try_to_connect) {
+  grpc_connectivity_state out = state_tracker_.state();
+  if (out == GRPC_CHANNEL_IDLE && try_to_connect) {
+    GRPC_CHANNEL_STACK_REF(owning_stack_, "TryToConnect");
+    combiner_->Run(GRPC_CLOSURE_CREATE(TryToConnectLocked, this, nullptr),
+                   GRPC_ERROR_NONE);
+  }
+  return out;
+}
+
+void ChannelData::AddConnectivityWatcher(
+    grpc_connectivity_state initial_state,
+    OrphanablePtr<AsyncConnectivityStateWatcherInterface> watcher) {
+  new ConnectivityWatcherAdder(this, initial_state, std::move(watcher));
+}
+
+void ChannelData::RemoveConnectivityWatcher(
+    AsyncConnectivityStateWatcherInterface* watcher) {
+  new ConnectivityWatcherRemover(this, watcher);
+}
+
+//
+// CallData implementation
+//
+
+// Retry support:
+//
+// In order to support retries, we act as a proxy for stream op batches.
+// When we get a batch from the surface, we add it to our list of pending
+// batches, and we then use those batches to construct separate "child"
+// batches to be started on the subchannel call.  When the child batches
+// return, we then decide which pending batches have been completed and
+// schedule their callbacks accordingly.  If a subchannel call fails and
+// we want to retry it, we do a new pick and start again, constructing
+// new "child" batches for the new subchannel call.
+//
+// Note that retries are committed when receiving data from the server
+// (except for Trailers-Only responses).  However, there may be many
+// send ops started before receiving any data, so we may have already
+// completed some number of send ops (and returned the completions up to
+// the surface) by the time we realize that we need to retry.  To deal
+// with this, we cache data for send ops, so that we can replay them on a
+// different subchannel call even after we have completed the original
+// batches.
+//
+// There are two sets of data to maintain:
+// - In call_data (in the parent channel), we maintain a list of pending
+//   ops and cached data for send ops.
+// - In the subchannel call, we maintain state to indicate what ops have
+//   already been sent down to that call.
+//
+// When constructing the "child" batches, we compare those two sets of
+// data to see which batches need to be sent to the subchannel call.
+
+// TODO(roth): In subsequent PRs:
+// - add support for transparent retries (including initial metadata)
+// - figure out how to record stats in census for retries
+//   (census filter is on top of this one)
+// - add census stats for retries
+
+CallData::CallData(grpc_call_element* elem, const ChannelData& chand,
+                   const grpc_call_element_args& args)
+    : deadline_state_(elem, args.call_stack, args.call_combiner,
+                      GPR_LIKELY(chand.deadline_checking_enabled())
+                          ? args.deadline
+                          : GRPC_MILLIS_INF_FUTURE),
+      path_(grpc_slice_ref_internal(args.path)),
+      call_start_time_(args.start_time),
+      deadline_(args.deadline),
+      arena_(args.arena),
+      owning_call_(args.call_stack),
+      call_combiner_(args.call_combiner),
+      call_context_(args.context),
+      lb_call_state_(this),
+      pending_send_initial_metadata_(false),
+      pending_send_message_(false),
+      pending_send_trailing_metadata_(false),
+      enable_retries_(chand.enable_retries()),
+      retry_committed_(false),
+      last_attempt_got_server_pushback_(false) {}
+
+CallData::~CallData() {
+  grpc_slice_unref_internal(path_);
+  GRPC_ERROR_UNREF(cancel_error_);
+  if (backend_metric_data_ != nullptr) {
+    backend_metric_data_
+        ->LoadBalancingPolicy::BackendMetricData::~BackendMetricData();
+  }
+  // Make sure there are no remaining pending batches.
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    GPR_ASSERT(pending_batches_[i].batch == nullptr);
+  }
+}
+
+grpc_error* CallData::Init(grpc_call_element* elem,
+                           const grpc_call_element_args* args) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  new (elem->call_data) CallData(elem, *chand, *args);
+  return GRPC_ERROR_NONE;
+}
+
+void CallData::Destroy(grpc_call_element* elem,
+                       const grpc_call_final_info* /*final_info*/,
+                       grpc_closure* then_schedule_closure) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GPR_LIKELY(calld->subchannel_call_ != nullptr)) {
+    calld->subchannel_call_->SetAfterCallStackDestroy(then_schedule_closure);
+    then_schedule_closure = nullptr;
+  }
+  calld->~CallData();
+  // TODO(yashkt) : This can potentially be a Closure::Run
+  ExecCtx::Run(DEBUG_LOCATION, then_schedule_closure, GRPC_ERROR_NONE);
+}
+
+void CallData::StartTransportStreamOpBatch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  GPR_TIMER_SCOPE("cc_start_transport_stream_op_batch", 0);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GPR_LIKELY(chand->deadline_checking_enabled())) {
+    grpc_deadline_state_client_start_transport_stream_op_batch(elem, batch);
+  }
+  // If we've previously been cancelled, immediately fail any new batches.
+  if (GPR_UNLIKELY(calld->cancel_error_ != GRPC_ERROR_NONE)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: failing batch with error: %s",
+              chand, calld, grpc_error_string(calld->cancel_error_));
+    }
+    // Note: This will release the call combiner.
+    grpc_transport_stream_op_batch_finish_with_failure(
+        batch, GRPC_ERROR_REF(calld->cancel_error_), calld->call_combiner_);
+    return;
+  }
+  // Handle cancellation.
+  if (GPR_UNLIKELY(batch->cancel_stream)) {
+    // Stash a copy of cancel_error in our call data, so that we can use
+    // it for subsequent operations.  This ensures that if the call is
+    // cancelled before any batches are passed down (e.g., if the deadline
+    // is in the past when the call starts), we can return the right
+    // error to the caller when the first batch does get passed down.
+    GRPC_ERROR_UNREF(calld->cancel_error_);
+    calld->cancel_error_ =
+        GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: recording cancel_error=%s", chand,
+              calld, grpc_error_string(calld->cancel_error_));
+    }
+    // If we do not have a subchannel call (i.e., a pick has not yet
+    // been started), fail all pending batches.  Otherwise, send the
+    // cancellation down to the subchannel call.
+    if (calld->subchannel_call_ == nullptr) {
+      // TODO(roth): If there is a pending retry callback, do we need to
+      // cancel it here?
+      calld->PendingBatchesFail(elem, GRPC_ERROR_REF(calld->cancel_error_),
+                                NoYieldCallCombiner);
+      // Note: This will release the call combiner.
+      grpc_transport_stream_op_batch_finish_with_failure(
+          batch, GRPC_ERROR_REF(calld->cancel_error_), calld->call_combiner_);
+    } else {
+      // Note: This will release the call combiner.
+      calld->subchannel_call_->StartTransportStreamOpBatch(batch);
+    }
+    return;
+  }
+  // Add the batch to the pending list.
+  calld->PendingBatchesAdd(elem, batch);
+  // Check if we've already gotten a subchannel call.
+  // Note that once we have picked a subchannel, we do not need to acquire
+  // the channel's data plane mutex, which is more efficient (especially for
+  // streaming calls).
+  if (calld->subchannel_call_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: starting batch on subchannel_call=%p", chand,
+              calld, calld->subchannel_call_.get());
+    }
+    calld->PendingBatchesResume(elem);
+    return;
+  }
+  // We do not yet have a subchannel call.
+  // For batches containing a send_initial_metadata op, acquire the
+  // channel's data plane mutex to pick a subchannel.
+  if (GPR_LIKELY(batch->send_initial_metadata)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: grabbing data plane mutex to perform pick",
+              chand, calld);
+    }
+    PickSubchannel(elem, GRPC_ERROR_NONE);
+  } else {
+    // For all other batches, release the call combiner.
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: saved batch, yielding call combiner", chand,
+              calld);
+    }
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner_,
+                            "batch does not include send_initial_metadata");
+  }
+}
+
+void CallData::SetPollent(grpc_call_element* elem,
+                          grpc_polling_entity* pollent) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  calld->pollent_ = pollent;
+}
+
+//
+// send op data caching
+//
+
+void CallData::MaybeCacheSendOpsForBatch(PendingBatch* pending) {
+  if (pending->send_ops_cached) return;
+  pending->send_ops_cached = true;
+  grpc_transport_stream_op_batch* batch = pending->batch;
+  // Save a copy of metadata for send_initial_metadata ops.
+  if (batch->send_initial_metadata) {
+    seen_send_initial_metadata_ = true;
+    GPR_ASSERT(send_initial_metadata_storage_ == nullptr);
+    grpc_metadata_batch* send_initial_metadata =
+        batch->payload->send_initial_metadata.send_initial_metadata;
+    send_initial_metadata_storage_ = (grpc_linked_mdelem*)arena_->Alloc(
+        sizeof(grpc_linked_mdelem) * send_initial_metadata->list.count);
+    grpc_metadata_batch_copy(send_initial_metadata, &send_initial_metadata_,
+                             send_initial_metadata_storage_);
+    send_initial_metadata_flags_ =
+        batch->payload->send_initial_metadata.send_initial_metadata_flags;
+    peer_string_ = batch->payload->send_initial_metadata.peer_string;
+  }
+  // Set up cache for send_message ops.
+  if (batch->send_message) {
+    ByteStreamCache* cache = arena_->New<ByteStreamCache>(
+        std::move(batch->payload->send_message.send_message));
+    send_messages_.push_back(cache);
+  }
+  // Save metadata batch for send_trailing_metadata ops.
+  if (batch->send_trailing_metadata) {
+    seen_send_trailing_metadata_ = true;
+    GPR_ASSERT(send_trailing_metadata_storage_ == nullptr);
+    grpc_metadata_batch* send_trailing_metadata =
+        batch->payload->send_trailing_metadata.send_trailing_metadata;
+    send_trailing_metadata_storage_ = (grpc_linked_mdelem*)arena_->Alloc(
+        sizeof(grpc_linked_mdelem) * send_trailing_metadata->list.count);
+    grpc_metadata_batch_copy(send_trailing_metadata, &send_trailing_metadata_,
+                             send_trailing_metadata_storage_);
+  }
+}
+
+void CallData::FreeCachedSendInitialMetadata(ChannelData* chand) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: destroying calld->send_initial_metadata", chand,
+            this);
+  }
+  grpc_metadata_batch_destroy(&send_initial_metadata_);
+}
+
+void CallData::FreeCachedSendMessage(ChannelData* chand, size_t idx) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: destroying calld->send_messages[%" PRIuPTR "]",
+            chand, this, idx);
+  }
+  send_messages_[idx]->Destroy();
+}
+
+void CallData::FreeCachedSendTrailingMetadata(ChannelData* chand) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: destroying calld->send_trailing_metadata",
+            chand, this);
+  }
+  grpc_metadata_batch_destroy(&send_trailing_metadata_);
+}
+
+void CallData::FreeCachedSendOpDataAfterCommit(
+    grpc_call_element* elem, SubchannelCallRetryState* retry_state) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (retry_state->completed_send_initial_metadata) {
+    FreeCachedSendInitialMetadata(chand);
+  }
+  for (size_t i = 0; i < retry_state->completed_send_message_count; ++i) {
+    FreeCachedSendMessage(chand, i);
+  }
+  if (retry_state->completed_send_trailing_metadata) {
+    FreeCachedSendTrailingMetadata(chand);
+  }
+}
+
+void CallData::FreeCachedSendOpDataForCompletedBatch(
+    grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+    SubchannelCallRetryState* retry_state) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (batch_data->batch.send_initial_metadata) {
+    FreeCachedSendInitialMetadata(chand);
+  }
+  if (batch_data->batch.send_message) {
+    FreeCachedSendMessage(chand, retry_state->completed_send_message_count - 1);
+  }
+  if (batch_data->batch.send_trailing_metadata) {
+    FreeCachedSendTrailingMetadata(chand);
+  }
+}
+
+//
+// LB recv_trailing_metadata_ready handling
+//
+
+void CallData::RecvTrailingMetadataReadyForLoadBalancingPolicy(
+    void* arg, grpc_error* error) {
+  CallData* calld = static_cast<CallData*>(arg);
+  // Set error if call did not succeed.
+  grpc_error* error_for_lb = GRPC_ERROR_NONE;
+  if (error != GRPC_ERROR_NONE) {
+    error_for_lb = error;
+  } else {
+    const auto& fields = calld->recv_trailing_metadata_->idx.named;
+    GPR_ASSERT(fields.grpc_status != nullptr);
+    grpc_status_code status =
+        grpc_get_status_code_from_metadata(fields.grpc_status->md);
+    std::string msg;
+    if (status != GRPC_STATUS_OK) {
+      error_for_lb = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("call failed"),
+          GRPC_ERROR_INT_GRPC_STATUS, status);
+      if (fields.grpc_message != nullptr) {
+        error_for_lb = grpc_error_set_str(
+            error_for_lb, GRPC_ERROR_STR_GRPC_MESSAGE,
+            grpc_slice_ref_internal(GRPC_MDVALUE(fields.grpc_message->md)));
+      }
+    }
+  }
+  // Invoke callback to LB policy.
+  Metadata trailing_metadata(calld, calld->recv_trailing_metadata_);
+  calld->lb_recv_trailing_metadata_ready_(error_for_lb, &trailing_metadata,
+                                          &calld->lb_call_state_);
+  if (error == GRPC_ERROR_NONE) GRPC_ERROR_UNREF(error_for_lb);
+  // Chain to original callback.
+  Closure::Run(DEBUG_LOCATION, calld->original_recv_trailing_metadata_ready_,
+               GRPC_ERROR_REF(error));
+}
+
+void CallData::MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy(
+    grpc_transport_stream_op_batch* batch) {
+  if (lb_recv_trailing_metadata_ready_ != nullptr) {
+    recv_trailing_metadata_ =
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata;
+    original_recv_trailing_metadata_ready_ =
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready_,
+                      RecvTrailingMetadataReadyForLoadBalancingPolicy, this,
+                      grpc_schedule_on_exec_ctx);
+    batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &recv_trailing_metadata_ready_;
+  }
+}
+
+//
+// pending_batches management
+//
+
+size_t CallData::GetBatchIndex(grpc_transport_stream_op_batch* batch) {
+  // Note: It is important the send_initial_metadata be the first entry
+  // here, since the code in pick_subchannel_locked() assumes it will be.
+  if (batch->send_initial_metadata) return 0;
+  if (batch->send_message) return 1;
+  if (batch->send_trailing_metadata) return 2;
+  if (batch->recv_initial_metadata) return 3;
+  if (batch->recv_message) return 4;
+  if (batch->recv_trailing_metadata) return 5;
+  GPR_UNREACHABLE_CODE(return (size_t)-1);
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+void CallData::PendingBatchesAdd(grpc_call_element* elem,
+                                 grpc_transport_stream_op_batch* batch) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  const size_t idx = GetBatchIndex(batch);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: adding pending batch at index %" PRIuPTR, chand,
+            this, idx);
+  }
+  PendingBatch* pending = &pending_batches_[idx];
+  GPR_ASSERT(pending->batch == nullptr);
+  pending->batch = batch;
+  pending->send_ops_cached = false;
+  if (enable_retries_) {
+    // Update state in calld about pending batches.
+    // Also check if the batch takes us over the retry buffer limit.
+    // Note: We don't check the size of trailing metadata here, because
+    // gRPC clients do not send trailing metadata.
+    if (batch->send_initial_metadata) {
+      pending_send_initial_metadata_ = true;
+      bytes_buffered_for_retry_ += grpc_metadata_batch_size(
+          batch->payload->send_initial_metadata.send_initial_metadata);
+    }
+    if (batch->send_message) {
+      pending_send_message_ = true;
+      bytes_buffered_for_retry_ +=
+          batch->payload->send_message.send_message->length();
+    }
+    if (batch->send_trailing_metadata) {
+      pending_send_trailing_metadata_ = true;
+    }
+    if (GPR_UNLIKELY(bytes_buffered_for_retry_ >
+                     chand->per_rpc_retry_buffer_size())) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p calld=%p: exceeded retry buffer size, committing",
+                chand, this);
+      }
+      SubchannelCallRetryState* retry_state =
+          subchannel_call_ == nullptr ? nullptr
+                                      : static_cast<SubchannelCallRetryState*>(
+                                            subchannel_call_->GetParentData());
+      RetryCommit(elem, retry_state);
+      // If we are not going to retry and have not yet started, pretend
+      // retries are disabled so that we don't bother with retry overhead.
+      if (num_attempts_completed_ == 0) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+          gpr_log(GPR_INFO,
+                  "chand=%p calld=%p: disabling retries before first attempt",
+                  chand, this);
+        }
+        enable_retries_ = false;
+      }
+    }
+  }
+}
+
+void CallData::PendingBatchClear(PendingBatch* pending) {
+  if (enable_retries_) {
+    if (pending->batch->send_initial_metadata) {
+      pending_send_initial_metadata_ = false;
+    }
+    if (pending->batch->send_message) {
+      pending_send_message_ = false;
+    }
+    if (pending->batch->send_trailing_metadata) {
+      pending_send_trailing_metadata_ = false;
+    }
+  }
+  pending->batch = nullptr;
+}
+
+void CallData::MaybeClearPendingBatch(grpc_call_element* elem,
+                                      PendingBatch* pending) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  grpc_transport_stream_op_batch* batch = pending->batch;
+  // We clear the pending batch if all of its callbacks have been
+  // scheduled and reset to nullptr.
+  if (batch->on_complete == nullptr &&
+      (!batch->recv_initial_metadata ||
+       batch->payload->recv_initial_metadata.recv_initial_metadata_ready ==
+           nullptr) &&
+      (!batch->recv_message ||
+       batch->payload->recv_message.recv_message_ready == nullptr) &&
+      (!batch->recv_trailing_metadata ||
+       batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready ==
+           nullptr)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: clearing pending batch", chand,
+              this);
+    }
+    PendingBatchClear(pending);
+  }
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+void CallData::FailPendingBatchInCallCombiner(void* arg, grpc_error* error) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  CallData* calld = static_cast<CallData*>(batch->handler_private.extra_arg);
+  // Note: This will release the call combiner.
+  grpc_transport_stream_op_batch_finish_with_failure(
+      batch, GRPC_ERROR_REF(error), calld->call_combiner_);
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+void CallData::PendingBatchesFail(
+    grpc_call_element* elem, grpc_error* error,
+    YieldCallCombinerPredicate yield_call_combiner_predicate) {
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    size_t num_batches = 0;
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+      if (pending_batches_[i].batch != nullptr) ++num_batches;
+    }
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: failing %" PRIuPTR " pending batches: %s",
+            elem->channel_data, this, num_batches, grpc_error_string(error));
+  }
+  CallCombinerClosureList closures;
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    PendingBatch* pending = &pending_batches_[i];
+    grpc_transport_stream_op_batch* batch = pending->batch;
+    if (batch != nullptr) {
+      if (batch->recv_trailing_metadata) {
+        MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy(batch);
+      }
+      batch->handler_private.extra_arg = this;
+      GRPC_CLOSURE_INIT(&batch->handler_private.closure,
+                        FailPendingBatchInCallCombiner, batch,
+                        grpc_schedule_on_exec_ctx);
+      closures.Add(&batch->handler_private.closure, GRPC_ERROR_REF(error),
+                   "PendingBatchesFail");
+      PendingBatchClear(pending);
+    }
+  }
+  if (yield_call_combiner_predicate(closures)) {
+    closures.RunClosures(call_combiner_);
+  } else {
+    closures.RunClosuresWithoutYielding(call_combiner_);
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+void CallData::ResumePendingBatchInCallCombiner(void* arg,
+                                                grpc_error* /*ignored*/) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  SubchannelCall* subchannel_call =
+      static_cast<SubchannelCall*>(batch->handler_private.extra_arg);
+  // Note: This will release the call combiner.
+  subchannel_call->StartTransportStreamOpBatch(batch);
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+void CallData::PendingBatchesResume(grpc_call_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (enable_retries_) {
+    StartRetriableSubchannelBatches(elem, GRPC_ERROR_NONE);
+    return;
+  }
+  // Retries not enabled; send down batches as-is.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    size_t num_batches = 0;
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+      if (pending_batches_[i].batch != nullptr) ++num_batches;
+    }
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: starting %" PRIuPTR
+            " pending batches on subchannel_call=%p",
+            chand, this, num_batches, subchannel_call_.get());
+  }
+  CallCombinerClosureList closures;
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    PendingBatch* pending = &pending_batches_[i];
+    grpc_transport_stream_op_batch* batch = pending->batch;
+    if (batch != nullptr) {
+      if (batch->recv_trailing_metadata) {
+        MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy(batch);
+      }
+      batch->handler_private.extra_arg = subchannel_call_.get();
+      GRPC_CLOSURE_INIT(&batch->handler_private.closure,
+                        ResumePendingBatchInCallCombiner, batch,
+                        grpc_schedule_on_exec_ctx);
+      closures.Add(&batch->handler_private.closure, GRPC_ERROR_NONE,
+                   "PendingBatchesResume");
+      PendingBatchClear(pending);
+    }
+  }
+  // Note: This will release the call combiner.
+  closures.RunClosures(call_combiner_);
+}
+
+template <typename Predicate>
+CallData::PendingBatch* CallData::PendingBatchFind(grpc_call_element* elem,
+                                                   const char* log_message,
+                                                   Predicate predicate) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    PendingBatch* pending = &pending_batches_[i];
+    grpc_transport_stream_op_batch* batch = pending->batch;
+    if (batch != nullptr && predicate(batch)) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p calld=%p: %s pending batch at index %" PRIuPTR, chand,
+                this, log_message, i);
+      }
+      return pending;
+    }
+  }
+  return nullptr;
+}
+
+//
+// retry code
+//
+
+void CallData::RetryCommit(grpc_call_element* elem,
+                           SubchannelCallRetryState* retry_state) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (retry_committed_) return;
+  retry_committed_ = true;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: committing retries", chand, this);
+  }
+  if (retry_state != nullptr) {
+    FreeCachedSendOpDataAfterCommit(elem, retry_state);
+  }
+}
+
+void CallData::DoRetry(grpc_call_element* elem,
+                       SubchannelCallRetryState* retry_state,
+                       grpc_millis server_pushback_ms) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  GPR_ASSERT(method_params_ != nullptr);
+  const auto* retry_policy = method_params_->retry_policy();
+  GPR_ASSERT(retry_policy != nullptr);
+  // Reset subchannel call.
+  subchannel_call_.reset();
+  // Compute backoff delay.
+  grpc_millis next_attempt_time;
+  if (server_pushback_ms >= 0) {
+    next_attempt_time = ExecCtx::Get()->Now() + server_pushback_ms;
+    last_attempt_got_server_pushback_ = true;
+  } else {
+    if (num_attempts_completed_ == 1 || last_attempt_got_server_pushback_) {
+      retry_backoff_.Init(
+          BackOff::Options()
+              .set_initial_backoff(retry_policy->initial_backoff)
+              .set_multiplier(retry_policy->backoff_multiplier)
+              .set_jitter(RETRY_BACKOFF_JITTER)
+              .set_max_backoff(retry_policy->max_backoff));
+      last_attempt_got_server_pushback_ = false;
+    }
+    next_attempt_time = retry_backoff_->NextAttemptTime();
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: retrying failed call in %" PRId64 " ms", chand,
+            this, next_attempt_time - ExecCtx::Get()->Now());
+  }
+  // Schedule retry after computed delay.
+  GRPC_CLOSURE_INIT(&pick_closure_, PickSubchannel, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&retry_timer_, next_attempt_time, &pick_closure_);
+  // Update bookkeeping.
+  if (retry_state != nullptr) retry_state->retry_dispatched = true;
+}
+
+bool CallData::MaybeRetry(grpc_call_element* elem,
+                          SubchannelCallBatchData* batch_data,
+                          grpc_status_code status,
+                          grpc_mdelem* server_pushback_md) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  // Get retry policy.
+  if (method_params_ == nullptr) return false;
+  const auto* retry_policy = method_params_->retry_policy();
+  if (retry_policy == nullptr) return false;
+  // If we've already dispatched a retry from this call, return true.
+  // This catches the case where the batch has multiple callbacks
+  // (i.e., it includes either recv_message or recv_initial_metadata).
+  SubchannelCallRetryState* retry_state = nullptr;
+  if (batch_data != nullptr) {
+    retry_state = static_cast<SubchannelCallRetryState*>(
+        batch_data->subchannel_call->GetParentData());
+    if (retry_state->retry_dispatched) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO, "chand=%p calld=%p: retry already dispatched", chand,
+                this);
+      }
+      return true;
+    }
+  }
+  // Check status.
+  if (GPR_LIKELY(status == GRPC_STATUS_OK)) {
+    if (retry_throttle_data_ != nullptr) {
+      retry_throttle_data_->RecordSuccess();
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: call succeeded", chand, this);
+    }
+    return false;
+  }
+  // Status is not OK.  Check whether the status is retryable.
+  if (!retry_policy->retryable_status_codes.Contains(status)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: status %s not configured as retryable", chand,
+              this, grpc_status_code_to_string(status));
+    }
+    return false;
+  }
+  // Record the failure and check whether retries are throttled.
+  // Note that it's important for this check to come after the status
+  // code check above, since we should only record failures whose statuses
+  // match the configured retryable status codes, so that we don't count
+  // things like failures due to malformed requests (INVALID_ARGUMENT).
+  // Conversely, it's important for this to come before the remaining
+  // checks, so that we don't fail to record failures due to other factors.
+  if (retry_throttle_data_ != nullptr &&
+      !retry_throttle_data_->RecordFailure()) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: retries throttled", chand, this);
+    }
+    return false;
+  }
+  // Check whether the call is committed.
+  if (retry_committed_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: retries already committed", chand,
+              this);
+    }
+    return false;
+  }
+  // Check whether we have retries remaining.
+  ++num_attempts_completed_;
+  if (num_attempts_completed_ >= retry_policy->max_attempts) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO, "chand=%p calld=%p: exceeded %d retry attempts", chand,
+              this, retry_policy->max_attempts);
+    }
+    return false;
+  }
+  // If the call was cancelled from the surface, don't retry.
+  if (cancel_error_ != GRPC_ERROR_NONE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: call cancelled from surface, not retrying",
+              chand, this);
+    }
+    return false;
+  }
+  // Check server push-back.
+  grpc_millis server_pushback_ms = -1;
+  if (server_pushback_md != nullptr) {
+    // If the value is "-1" or any other unparseable string, we do not retry.
+    uint32_t ms;
+    if (!grpc_parse_slice_to_uint32(GRPC_MDVALUE(*server_pushback_md), &ms)) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p calld=%p: not retrying due to server push-back",
+                chand, this);
+      }
+      return false;
+    } else {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO, "chand=%p calld=%p: server push-back: retry in %u ms",
+                chand, this, ms);
+      }
+      server_pushback_ms = (grpc_millis)ms;
+    }
+  }
+  DoRetry(elem, retry_state, server_pushback_ms);
+  return true;
+}
+
+//
+// CallData::SubchannelCallBatchData
+//
+
+CallData::SubchannelCallBatchData* CallData::SubchannelCallBatchData::Create(
+    grpc_call_element* elem, int refcount, bool set_on_complete) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  return calld->arena_->New<SubchannelCallBatchData>(elem, calld, refcount,
+                                                     set_on_complete);
+}
+
+CallData::SubchannelCallBatchData::SubchannelCallBatchData(
+    grpc_call_element* elem, CallData* calld, int refcount,
+    bool set_on_complete)
+    : elem(elem), subchannel_call(calld->subchannel_call_) {
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          calld->subchannel_call_->GetParentData());
+  batch.payload = &retry_state->batch_payload;
+  gpr_ref_init(&refs, refcount);
+  if (set_on_complete) {
+    GRPC_CLOSURE_INIT(&on_complete, CallData::OnComplete, this,
+                      grpc_schedule_on_exec_ctx);
+    batch.on_complete = &on_complete;
+  }
+  GRPC_CALL_STACK_REF(calld->owning_call_, "batch_data");
+}
+
+void CallData::SubchannelCallBatchData::Destroy() {
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(subchannel_call->GetParentData());
+  if (batch.send_initial_metadata) {
+    grpc_metadata_batch_destroy(&retry_state->send_initial_metadata);
+  }
+  if (batch.send_trailing_metadata) {
+    grpc_metadata_batch_destroy(&retry_state->send_trailing_metadata);
+  }
+  if (batch.recv_initial_metadata) {
+    grpc_metadata_batch_destroy(&retry_state->recv_initial_metadata);
+  }
+  if (batch.recv_trailing_metadata) {
+    grpc_metadata_batch_destroy(&retry_state->recv_trailing_metadata);
+  }
+  subchannel_call.reset();
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  GRPC_CALL_STACK_UNREF(calld->owning_call_, "batch_data");
+}
+
+//
+// recv_initial_metadata callback handling
+//
+
+void CallData::InvokeRecvInitialMetadataCallback(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  CallData* calld = static_cast<CallData*>(batch_data->elem->call_data);
+  // Find pending batch.
+  PendingBatch* pending = calld->PendingBatchFind(
+      batch_data->elem, "invoking recv_initial_metadata_ready for",
+      [](grpc_transport_stream_op_batch* batch) {
+        return batch->recv_initial_metadata &&
+               batch->payload->recv_initial_metadata
+                       .recv_initial_metadata_ready != nullptr;
+      });
+  GPR_ASSERT(pending != nullptr);
+  // Return metadata.
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  grpc_metadata_batch_move(
+      &retry_state->recv_initial_metadata,
+      pending->batch->payload->recv_initial_metadata.recv_initial_metadata);
+  // Update bookkeeping.
+  // Note: Need to do this before invoking the callback, since invoking
+  // the callback will result in yielding the call combiner.
+  grpc_closure* recv_initial_metadata_ready =
+      pending->batch->payload->recv_initial_metadata
+          .recv_initial_metadata_ready;
+  pending->batch->payload->recv_initial_metadata.recv_initial_metadata_ready =
+      nullptr;
+  calld->MaybeClearPendingBatch(batch_data->elem, pending);
+  batch_data->Unref();
+  // Invoke callback.
+  Closure::Run(DEBUG_LOCATION, recv_initial_metadata_ready,
+               GRPC_ERROR_REF(error));
+}
+
+void CallData::RecvInitialMetadataReady(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  grpc_call_element* elem = batch_data->elem;
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: got recv_initial_metadata_ready, error=%s",
+            chand, calld, grpc_error_string(error));
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  retry_state->completed_recv_initial_metadata = true;
+  // If a retry was already dispatched, then we're not going to use the
+  // result of this recv_initial_metadata op, so do nothing.
+  if (retry_state->retry_dispatched) {
+    GRPC_CALL_COMBINER_STOP(
+        calld->call_combiner_,
+        "recv_initial_metadata_ready after retry dispatched");
+    return;
+  }
+  // If we got an error or a Trailers-Only response and have not yet gotten
+  // the recv_trailing_metadata_ready callback, then defer propagating this
+  // callback back to the surface.  We can evaluate whether to retry when
+  // recv_trailing_metadata comes back.
+  if (GPR_UNLIKELY((retry_state->trailing_metadata_available ||
+                    error != GRPC_ERROR_NONE) &&
+                   !retry_state->completed_recv_trailing_metadata)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: deferring recv_initial_metadata_ready "
+              "(Trailers-Only)",
+              chand, calld);
+    }
+    retry_state->recv_initial_metadata_ready_deferred_batch = batch_data;
+    retry_state->recv_initial_metadata_error = GRPC_ERROR_REF(error);
+    if (!retry_state->started_recv_trailing_metadata) {
+      // recv_trailing_metadata not yet started by application; start it
+      // ourselves to get status.
+      calld->StartInternalRecvTrailingMetadata(elem);
+    } else {
+      GRPC_CALL_COMBINER_STOP(
+          calld->call_combiner_,
+          "recv_initial_metadata_ready trailers-only or error");
+    }
+    return;
+  }
+  // Received valid initial metadata, so commit the call.
+  calld->RetryCommit(elem, retry_state);
+  // Invoke the callback to return the result to the surface.
+  // Manually invoking a callback function; it does not take ownership of error.
+  calld->InvokeRecvInitialMetadataCallback(batch_data, error);
+}
+
+//
+// recv_message callback handling
+//
+
+void CallData::InvokeRecvMessageCallback(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  CallData* calld = static_cast<CallData*>(batch_data->elem->call_data);
+  // Find pending op.
+  PendingBatch* pending = calld->PendingBatchFind(
+      batch_data->elem, "invoking recv_message_ready for",
+      [](grpc_transport_stream_op_batch* batch) {
+        return batch->recv_message &&
+               batch->payload->recv_message.recv_message_ready != nullptr;
+      });
+  GPR_ASSERT(pending != nullptr);
+  // Return payload.
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  *pending->batch->payload->recv_message.recv_message =
+      std::move(retry_state->recv_message);
+  // Update bookkeeping.
+  // Note: Need to do this before invoking the callback, since invoking
+  // the callback will result in yielding the call combiner.
+  grpc_closure* recv_message_ready =
+      pending->batch->payload->recv_message.recv_message_ready;
+  pending->batch->payload->recv_message.recv_message_ready = nullptr;
+  calld->MaybeClearPendingBatch(batch_data->elem, pending);
+  batch_data->Unref();
+  // Invoke callback.
+  Closure::Run(DEBUG_LOCATION, recv_message_ready, GRPC_ERROR_REF(error));
+}
+
+void CallData::RecvMessageReady(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  grpc_call_element* elem = batch_data->elem;
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: got recv_message_ready, error=%s",
+            chand, calld, grpc_error_string(error));
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  ++retry_state->completed_recv_message_count;
+  // If a retry was already dispatched, then we're not going to use the
+  // result of this recv_message op, so do nothing.
+  if (retry_state->retry_dispatched) {
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner_,
+                            "recv_message_ready after retry dispatched");
+    return;
+  }
+  // If we got an error or the payload was nullptr and we have not yet gotten
+  // the recv_trailing_metadata_ready callback, then defer propagating this
+  // callback back to the surface.  We can evaluate whether to retry when
+  // recv_trailing_metadata comes back.
+  if (GPR_UNLIKELY(
+          (retry_state->recv_message == nullptr || error != GRPC_ERROR_NONE) &&
+          !retry_state->completed_recv_trailing_metadata)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: deferring recv_message_ready (nullptr "
+              "message and recv_trailing_metadata pending)",
+              chand, calld);
+    }
+    retry_state->recv_message_ready_deferred_batch = batch_data;
+    retry_state->recv_message_error = GRPC_ERROR_REF(error);
+    if (!retry_state->started_recv_trailing_metadata) {
+      // recv_trailing_metadata not yet started by application; start it
+      // ourselves to get status.
+      calld->StartInternalRecvTrailingMetadata(elem);
+    } else {
+      GRPC_CALL_COMBINER_STOP(calld->call_combiner_, "recv_message_ready null");
+    }
+    return;
+  }
+  // Received a valid message, so commit the call.
+  calld->RetryCommit(elem, retry_state);
+  // Invoke the callback to return the result to the surface.
+  // Manually invoking a callback function; it does not take ownership of error.
+  calld->InvokeRecvMessageCallback(batch_data, error);
+}
+
+//
+// recv_trailing_metadata handling
+//
+
+void CallData::GetCallStatus(grpc_metadata_batch* md_batch, grpc_error* error,
+                             grpc_status_code* status,
+                             grpc_mdelem** server_pushback_md) {
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error_get_status(error, deadline_, status, nullptr, nullptr, nullptr);
+  } else {
+    GPR_ASSERT(md_batch->idx.named.grpc_status != nullptr);
+    *status =
+        grpc_get_status_code_from_metadata(md_batch->idx.named.grpc_status->md);
+    if (server_pushback_md != nullptr &&
+        md_batch->idx.named.grpc_retry_pushback_ms != nullptr) {
+      *server_pushback_md = &md_batch->idx.named.grpc_retry_pushback_ms->md;
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void CallData::AddClosureForRecvTrailingMetadataReady(
+    grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+    grpc_error* error, CallCombinerClosureList* closures) {
+  // Find pending batch.
+  PendingBatch* pending = PendingBatchFind(
+      elem, "invoking recv_trailing_metadata for",
+      [](grpc_transport_stream_op_batch* batch) {
+        return batch->recv_trailing_metadata &&
+               batch->payload->recv_trailing_metadata
+                       .recv_trailing_metadata_ready != nullptr;
+      });
+  // If we generated the recv_trailing_metadata op internally via
+  // StartInternalRecvTrailingMetadata(), then there will be no pending batch.
+  if (pending == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  // Return metadata.
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  grpc_metadata_batch_move(
+      &retry_state->recv_trailing_metadata,
+      pending->batch->payload->recv_trailing_metadata.recv_trailing_metadata);
+  // Add closure.
+  closures->Add(pending->batch->payload->recv_trailing_metadata
+                    .recv_trailing_metadata_ready,
+                error, "recv_trailing_metadata_ready for pending batch");
+  // Update bookkeeping.
+  pending->batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+      nullptr;
+  MaybeClearPendingBatch(elem, pending);
+}
+
+void CallData::AddClosuresForDeferredRecvCallbacks(
+    SubchannelCallBatchData* batch_data, SubchannelCallRetryState* retry_state,
+    CallCombinerClosureList* closures) {
+  if (batch_data->batch.recv_trailing_metadata) {
+    // Add closure for deferred recv_initial_metadata_ready.
+    if (GPR_UNLIKELY(retry_state->recv_initial_metadata_ready_deferred_batch !=
+                     nullptr)) {
+      GRPC_CLOSURE_INIT(&retry_state->recv_initial_metadata_ready,
+                        InvokeRecvInitialMetadataCallback,
+                        retry_state->recv_initial_metadata_ready_deferred_batch,
+                        grpc_schedule_on_exec_ctx);
+      closures->Add(&retry_state->recv_initial_metadata_ready,
+                    retry_state->recv_initial_metadata_error,
+                    "resuming recv_initial_metadata_ready");
+      retry_state->recv_initial_metadata_ready_deferred_batch = nullptr;
+    }
+    // Add closure for deferred recv_message_ready.
+    if (GPR_UNLIKELY(retry_state->recv_message_ready_deferred_batch !=
+                     nullptr)) {
+      GRPC_CLOSURE_INIT(&retry_state->recv_message_ready,
+                        InvokeRecvMessageCallback,
+                        retry_state->recv_message_ready_deferred_batch,
+                        grpc_schedule_on_exec_ctx);
+      closures->Add(&retry_state->recv_message_ready,
+                    retry_state->recv_message_error,
+                    "resuming recv_message_ready");
+      retry_state->recv_message_ready_deferred_batch = nullptr;
+    }
+  }
+}
+
+bool CallData::PendingBatchIsUnstarted(PendingBatch* pending,
+                                       SubchannelCallRetryState* retry_state) {
+  if (pending->batch == nullptr || pending->batch->on_complete == nullptr) {
+    return false;
+  }
+  if (pending->batch->send_initial_metadata &&
+      !retry_state->started_send_initial_metadata) {
+    return true;
+  }
+  if (pending->batch->send_message &&
+      retry_state->started_send_message_count < send_messages_.size()) {
+    return true;
+  }
+  if (pending->batch->send_trailing_metadata &&
+      !retry_state->started_send_trailing_metadata) {
+    return true;
+  }
+  return false;
+}
+
+void CallData::AddClosuresToFailUnstartedPendingBatches(
+    grpc_call_element* elem, SubchannelCallRetryState* retry_state,
+    grpc_error* error, CallCombinerClosureList* closures) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    PendingBatch* pending = &pending_batches_[i];
+    if (PendingBatchIsUnstarted(pending, retry_state)) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+        gpr_log(GPR_INFO,
+                "chand=%p calld=%p: failing unstarted pending batch at index "
+                "%" PRIuPTR,
+                chand, this, i);
+      }
+      closures->Add(pending->batch->on_complete, GRPC_ERROR_REF(error),
+                    "failing on_complete for pending batch");
+      pending->batch->on_complete = nullptr;
+      MaybeClearPendingBatch(elem, pending);
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void CallData::RunClosuresForCompletedCall(SubchannelCallBatchData* batch_data,
+                                           grpc_error* error) {
+  grpc_call_element* elem = batch_data->elem;
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  // Construct list of closures to execute.
+  CallCombinerClosureList closures;
+  // First, add closure for recv_trailing_metadata_ready.
+  AddClosureForRecvTrailingMetadataReady(elem, batch_data,
+                                         GRPC_ERROR_REF(error), &closures);
+  // If there are deferred recv_initial_metadata_ready or recv_message_ready
+  // callbacks, add them to closures.
+  AddClosuresForDeferredRecvCallbacks(batch_data, retry_state, &closures);
+  // Add closures to fail any pending batches that have not yet been started.
+  AddClosuresToFailUnstartedPendingBatches(elem, retry_state,
+                                           GRPC_ERROR_REF(error), &closures);
+  // Don't need batch_data anymore.
+  batch_data->Unref();
+  // Schedule all of the closures identified above.
+  // Note: This will release the call combiner.
+  closures.RunClosures(call_combiner_);
+  GRPC_ERROR_UNREF(error);
+}
+
+void CallData::RecvTrailingMetadataReady(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  grpc_call_element* elem = batch_data->elem;
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: got recv_trailing_metadata_ready, error=%s",
+            chand, calld, grpc_error_string(error));
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  retry_state->completed_recv_trailing_metadata = true;
+  // Get the call's status and check for server pushback metadata.
+  grpc_status_code status = GRPC_STATUS_OK;
+  grpc_mdelem* server_pushback_md = nullptr;
+  grpc_metadata_batch* md_batch =
+      batch_data->batch.payload->recv_trailing_metadata.recv_trailing_metadata;
+  calld->GetCallStatus(md_batch, GRPC_ERROR_REF(error), &status,
+                       &server_pushback_md);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: call finished, status=%s", chand,
+            calld, grpc_status_code_to_string(status));
+  }
+  // Check if we should retry.
+  if (calld->MaybeRetry(elem, batch_data, status, server_pushback_md)) {
+    // Unref batch_data for deferred recv_initial_metadata_ready or
+    // recv_message_ready callbacks, if any.
+    if (retry_state->recv_initial_metadata_ready_deferred_batch != nullptr) {
+      batch_data->Unref();
+      GRPC_ERROR_UNREF(retry_state->recv_initial_metadata_error);
+    }
+    if (retry_state->recv_message_ready_deferred_batch != nullptr) {
+      batch_data->Unref();
+      GRPC_ERROR_UNREF(retry_state->recv_message_error);
+    }
+    batch_data->Unref();
+    return;
+  }
+  // Not retrying, so commit the call.
+  calld->RetryCommit(elem, retry_state);
+  // Run any necessary closures.
+  calld->RunClosuresForCompletedCall(batch_data, GRPC_ERROR_REF(error));
+}
+
+//
+// on_complete callback handling
+//
+
+void CallData::AddClosuresForCompletedPendingBatch(
+    grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+    grpc_error* error, CallCombinerClosureList* closures) {
+  PendingBatch* pending = PendingBatchFind(
+      elem, "completed", [batch_data](grpc_transport_stream_op_batch* batch) {
+        // Match the pending batch with the same set of send ops as the
+        // subchannel batch we've just completed.
+        return batch->on_complete != nullptr &&
+               batch_data->batch.send_initial_metadata ==
+                   batch->send_initial_metadata &&
+               batch_data->batch.send_message == batch->send_message &&
+               batch_data->batch.send_trailing_metadata ==
+                   batch->send_trailing_metadata;
+      });
+  // If batch_data is a replay batch, then there will be no pending
+  // batch to complete.
+  if (pending == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  // Add closure.
+  closures->Add(pending->batch->on_complete, error,
+                "on_complete for pending batch");
+  pending->batch->on_complete = nullptr;
+  MaybeClearPendingBatch(elem, pending);
+}
+
+void CallData::AddClosuresForReplayOrPendingSendOps(
+    grpc_call_element* elem, SubchannelCallBatchData* batch_data,
+    SubchannelCallRetryState* retry_state, CallCombinerClosureList* closures) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  bool have_pending_send_message_ops =
+      retry_state->started_send_message_count < send_messages_.size();
+  bool have_pending_send_trailing_metadata_op =
+      seen_send_trailing_metadata_ &&
+      !retry_state->started_send_trailing_metadata;
+  if (!have_pending_send_message_ops &&
+      !have_pending_send_trailing_metadata_op) {
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+      PendingBatch* pending = &pending_batches_[i];
+      grpc_transport_stream_op_batch* batch = pending->batch;
+      if (batch == nullptr || pending->send_ops_cached) continue;
+      if (batch->send_message) have_pending_send_message_ops = true;
+      if (batch->send_trailing_metadata) {
+        have_pending_send_trailing_metadata_op = true;
+      }
+    }
+  }
+  if (have_pending_send_message_ops || have_pending_send_trailing_metadata_op) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: starting next batch for pending send op(s)",
+              chand, this);
+    }
+    GRPC_CLOSURE_INIT(&batch_data->batch.handler_private.closure,
+                      StartRetriableSubchannelBatches, elem,
+                      grpc_schedule_on_exec_ctx);
+    closures->Add(&batch_data->batch.handler_private.closure, GRPC_ERROR_NONE,
+                  "starting next batch for send_* op(s)");
+  }
+}
+
+void CallData::OnComplete(void* arg, grpc_error* error) {
+  SubchannelCallBatchData* batch_data =
+      static_cast<SubchannelCallBatchData*>(arg);
+  grpc_call_element* elem = batch_data->elem;
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    char* batch_str = grpc_transport_stream_op_batch_string(&batch_data->batch);
+    gpr_log(GPR_INFO, "chand=%p calld=%p: got on_complete, error=%s, batch=%s",
+            chand, calld, grpc_error_string(error), batch_str);
+    gpr_free(batch_str);
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          batch_data->subchannel_call->GetParentData());
+  // Update bookkeeping in retry_state.
+  if (batch_data->batch.send_initial_metadata) {
+    retry_state->completed_send_initial_metadata = true;
+  }
+  if (batch_data->batch.send_message) {
+    ++retry_state->completed_send_message_count;
+  }
+  if (batch_data->batch.send_trailing_metadata) {
+    retry_state->completed_send_trailing_metadata = true;
+  }
+  // If the call is committed, free cached data for send ops that we've just
+  // completed.
+  if (calld->retry_committed_) {
+    calld->FreeCachedSendOpDataForCompletedBatch(elem, batch_data, retry_state);
+  }
+  // Construct list of closures to execute.
+  CallCombinerClosureList closures;
+  // If a retry was already dispatched, that means we saw
+  // recv_trailing_metadata before this, so we do nothing here.
+  // Otherwise, invoke the callback to return the result to the surface.
+  if (!retry_state->retry_dispatched) {
+    // Add closure for the completed pending batch, if any.
+    calld->AddClosuresForCompletedPendingBatch(
+        elem, batch_data, GRPC_ERROR_REF(error), &closures);
+    // If needed, add a callback to start any replay or pending send ops on
+    // the subchannel call.
+    if (!retry_state->completed_recv_trailing_metadata) {
+      calld->AddClosuresForReplayOrPendingSendOps(elem, batch_data, retry_state,
+                                                  &closures);
+    }
+  }
+  // Track number of pending subchannel send batches and determine if this
+  // was the last one.
+  --calld->num_pending_retriable_subchannel_send_batches_;
+  const bool last_send_batch_complete =
+      calld->num_pending_retriable_subchannel_send_batches_ == 0;
+  // Don't need batch_data anymore.
+  batch_data->Unref();
+  // Schedule all of the closures identified above.
+  // Note: This yeilds the call combiner.
+  closures.RunClosures(calld->call_combiner_);
+  // If this was the last subchannel send batch, unref the call stack.
+  if (last_send_batch_complete) {
+    GRPC_CALL_STACK_UNREF(calld->owning_call_, "subchannel_send_batches");
+  }
+}
+
+//
+// subchannel batch construction
+//
+
+void CallData::StartBatchInCallCombiner(void* arg, grpc_error* /*ignored*/) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  SubchannelCall* subchannel_call =
+      static_cast<SubchannelCall*>(batch->handler_private.extra_arg);
+  // Note: This will release the call combiner.
+  subchannel_call->StartTransportStreamOpBatch(batch);
+}
+
+void CallData::AddClosureForSubchannelBatch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch,
+    CallCombinerClosureList* closures) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  batch->handler_private.extra_arg = subchannel_call_.get();
+  GRPC_CLOSURE_INIT(&batch->handler_private.closure, StartBatchInCallCombiner,
+                    batch, grpc_schedule_on_exec_ctx);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    char* batch_str = grpc_transport_stream_op_batch_string(batch);
+    gpr_log(GPR_INFO, "chand=%p calld=%p: starting subchannel batch: %s", chand,
+            this, batch_str);
+    gpr_free(batch_str);
+  }
+  closures->Add(&batch->handler_private.closure, GRPC_ERROR_NONE,
+                "start_subchannel_batch");
+}
+
+void CallData::AddRetriableSendInitialMetadataOp(
+    SubchannelCallRetryState* retry_state,
+    SubchannelCallBatchData* batch_data) {
+  // Maps the number of retries to the corresponding metadata value slice.
+  const grpc_slice* retry_count_strings[] = {&GRPC_MDSTR_1, &GRPC_MDSTR_2,
+                                             &GRPC_MDSTR_3, &GRPC_MDSTR_4};
+  // We need to make a copy of the metadata batch for each attempt, since
+  // the filters in the subchannel stack may modify this batch, and we don't
+  // want those modifications to be passed forward to subsequent attempts.
+  //
+  // If we've already completed one or more attempts, add the
+  // grpc-retry-attempts header.
+  retry_state->send_initial_metadata_storage =
+      static_cast<grpc_linked_mdelem*>(arena_->Alloc(
+          sizeof(grpc_linked_mdelem) *
+          (send_initial_metadata_.list.count + (num_attempts_completed_ > 0))));
+  grpc_metadata_batch_copy(&send_initial_metadata_,
+                           &retry_state->send_initial_metadata,
+                           retry_state->send_initial_metadata_storage);
+  if (GPR_UNLIKELY(retry_state->send_initial_metadata.idx.named
+                       .grpc_previous_rpc_attempts != nullptr)) {
+    grpc_metadata_batch_remove(&retry_state->send_initial_metadata,
+                               GRPC_BATCH_GRPC_PREVIOUS_RPC_ATTEMPTS);
+  }
+  if (GPR_UNLIKELY(num_attempts_completed_ > 0)) {
+    grpc_mdelem retry_md = grpc_mdelem_create(
+        GRPC_MDSTR_GRPC_PREVIOUS_RPC_ATTEMPTS,
+        *retry_count_strings[num_attempts_completed_ - 1], nullptr);
+    grpc_error* error = grpc_metadata_batch_add_tail(
+        &retry_state->send_initial_metadata,
+        &retry_state
+             ->send_initial_metadata_storage[send_initial_metadata_.list.count],
+        retry_md, GRPC_BATCH_GRPC_PREVIOUS_RPC_ATTEMPTS);
+    if (GPR_UNLIKELY(error != GRPC_ERROR_NONE)) {
+      gpr_log(GPR_ERROR, "error adding retry metadata: %s",
+              grpc_error_string(error));
+      GPR_ASSERT(false);
+    }
+  }
+  retry_state->started_send_initial_metadata = true;
+  batch_data->batch.send_initial_metadata = true;
+  batch_data->batch.payload->send_initial_metadata.send_initial_metadata =
+      &retry_state->send_initial_metadata;
+  batch_data->batch.payload->send_initial_metadata.send_initial_metadata_flags =
+      send_initial_metadata_flags_;
+  batch_data->batch.payload->send_initial_metadata.peer_string = peer_string_;
+}
+
+void CallData::AddRetriableSendMessageOp(grpc_call_element* elem,
+                                         SubchannelCallRetryState* retry_state,
+                                         SubchannelCallBatchData* batch_data) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: starting calld->send_messages[%" PRIuPTR "]",
+            chand, this, retry_state->started_send_message_count);
+  }
+  ByteStreamCache* cache =
+      send_messages_[retry_state->started_send_message_count];
+  ++retry_state->started_send_message_count;
+  retry_state->send_message.Init(cache);
+  batch_data->batch.send_message = true;
+  batch_data->batch.payload->send_message.send_message.reset(
+      retry_state->send_message.get());
+}
+
+void CallData::AddRetriableSendTrailingMetadataOp(
+    SubchannelCallRetryState* retry_state,
+    SubchannelCallBatchData* batch_data) {
+  // We need to make a copy of the metadata batch for each attempt, since
+  // the filters in the subchannel stack may modify this batch, and we don't
+  // want those modifications to be passed forward to subsequent attempts.
+  retry_state->send_trailing_metadata_storage =
+      static_cast<grpc_linked_mdelem*>(arena_->Alloc(
+          sizeof(grpc_linked_mdelem) * send_trailing_metadata_.list.count));
+  grpc_metadata_batch_copy(&send_trailing_metadata_,
+                           &retry_state->send_trailing_metadata,
+                           retry_state->send_trailing_metadata_storage);
+  retry_state->started_send_trailing_metadata = true;
+  batch_data->batch.send_trailing_metadata = true;
+  batch_data->batch.payload->send_trailing_metadata.send_trailing_metadata =
+      &retry_state->send_trailing_metadata;
+}
+
+void CallData::AddRetriableRecvInitialMetadataOp(
+    SubchannelCallRetryState* retry_state,
+    SubchannelCallBatchData* batch_data) {
+  retry_state->started_recv_initial_metadata = true;
+  batch_data->batch.recv_initial_metadata = true;
+  grpc_metadata_batch_init(&retry_state->recv_initial_metadata);
+  batch_data->batch.payload->recv_initial_metadata.recv_initial_metadata =
+      &retry_state->recv_initial_metadata;
+  batch_data->batch.payload->recv_initial_metadata.trailing_metadata_available =
+      &retry_state->trailing_metadata_available;
+  GRPC_CLOSURE_INIT(&retry_state->recv_initial_metadata_ready,
+                    RecvInitialMetadataReady, batch_data,
+                    grpc_schedule_on_exec_ctx);
+  batch_data->batch.payload->recv_initial_metadata.recv_initial_metadata_ready =
+      &retry_state->recv_initial_metadata_ready;
+}
+
+void CallData::AddRetriableRecvMessageOp(SubchannelCallRetryState* retry_state,
+                                         SubchannelCallBatchData* batch_data) {
+  ++retry_state->started_recv_message_count;
+  batch_data->batch.recv_message = true;
+  batch_data->batch.payload->recv_message.recv_message =
+      &retry_state->recv_message;
+  GRPC_CLOSURE_INIT(&retry_state->recv_message_ready, RecvMessageReady,
+                    batch_data, grpc_schedule_on_exec_ctx);
+  batch_data->batch.payload->recv_message.recv_message_ready =
+      &retry_state->recv_message_ready;
+}
+
+void CallData::AddRetriableRecvTrailingMetadataOp(
+    SubchannelCallRetryState* retry_state,
+    SubchannelCallBatchData* batch_data) {
+  retry_state->started_recv_trailing_metadata = true;
+  batch_data->batch.recv_trailing_metadata = true;
+  grpc_metadata_batch_init(&retry_state->recv_trailing_metadata);
+  batch_data->batch.payload->recv_trailing_metadata.recv_trailing_metadata =
+      &retry_state->recv_trailing_metadata;
+  batch_data->batch.payload->recv_trailing_metadata.collect_stats =
+      &retry_state->collect_stats;
+  GRPC_CLOSURE_INIT(&retry_state->recv_trailing_metadata_ready,
+                    RecvTrailingMetadataReady, batch_data,
+                    grpc_schedule_on_exec_ctx);
+  batch_data->batch.payload->recv_trailing_metadata
+      .recv_trailing_metadata_ready =
+      &retry_state->recv_trailing_metadata_ready;
+  MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy(
+      &batch_data->batch);
+}
+
+void CallData::StartInternalRecvTrailingMetadata(grpc_call_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: call failed but recv_trailing_metadata not "
+            "started; starting it internally",
+            chand, this);
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(subchannel_call_->GetParentData());
+  // Create batch_data with 2 refs, since this batch will be unreffed twice:
+  // once for the recv_trailing_metadata_ready callback when the subchannel
+  // batch returns, and again when we actually get a recv_trailing_metadata
+  // op from the surface.
+  SubchannelCallBatchData* batch_data =
+      SubchannelCallBatchData::Create(elem, 2, false /* set_on_complete */);
+  AddRetriableRecvTrailingMetadataOp(retry_state, batch_data);
+  retry_state->recv_trailing_metadata_internal_batch = batch_data;
+  // Note: This will release the call combiner.
+  subchannel_call_->StartTransportStreamOpBatch(&batch_data->batch);
+}
+
+// If there are any cached send ops that need to be replayed on the
+// current subchannel call, creates and returns a new subchannel batch
+// to replay those ops.  Otherwise, returns nullptr.
+CallData::SubchannelCallBatchData*
+CallData::MaybeCreateSubchannelBatchForReplay(
+    grpc_call_element* elem, SubchannelCallRetryState* retry_state) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  SubchannelCallBatchData* replay_batch_data = nullptr;
+  // send_initial_metadata.
+  if (seen_send_initial_metadata_ &&
+      !retry_state->started_send_initial_metadata &&
+      !pending_send_initial_metadata_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: replaying previously completed "
+              "send_initial_metadata op",
+              chand, this);
+    }
+    replay_batch_data =
+        SubchannelCallBatchData::Create(elem, 1, true /* set_on_complete */);
+    AddRetriableSendInitialMetadataOp(retry_state, replay_batch_data);
+  }
+  // send_message.
+  // Note that we can only have one send_message op in flight at a time.
+  if (retry_state->started_send_message_count < send_messages_.size() &&
+      retry_state->started_send_message_count ==
+          retry_state->completed_send_message_count &&
+      !pending_send_message_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: replaying previously completed "
+              "send_message op",
+              chand, this);
+    }
+    if (replay_batch_data == nullptr) {
+      replay_batch_data =
+          SubchannelCallBatchData::Create(elem, 1, true /* set_on_complete */);
+    }
+    AddRetriableSendMessageOp(elem, retry_state, replay_batch_data);
+  }
+  // send_trailing_metadata.
+  // Note that we only add this op if we have no more send_message ops
+  // to start, since we can't send down any more send_message ops after
+  // send_trailing_metadata.
+  if (seen_send_trailing_metadata_ &&
+      retry_state->started_send_message_count == send_messages_.size() &&
+      !retry_state->started_send_trailing_metadata &&
+      !pending_send_trailing_metadata_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: replaying previously completed "
+              "send_trailing_metadata op",
+              chand, this);
+    }
+    if (replay_batch_data == nullptr) {
+      replay_batch_data =
+          SubchannelCallBatchData::Create(elem, 1, true /* set_on_complete */);
+    }
+    AddRetriableSendTrailingMetadataOp(retry_state, replay_batch_data);
+  }
+  return replay_batch_data;
+}
+
+void CallData::AddSubchannelBatchesForPendingBatches(
+    grpc_call_element* elem, SubchannelCallRetryState* retry_state,
+    CallCombinerClosureList* closures) {
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(pending_batches_); ++i) {
+    PendingBatch* pending = &pending_batches_[i];
+    grpc_transport_stream_op_batch* batch = pending->batch;
+    if (batch == nullptr) continue;
+    // Skip any batch that either (a) has already been started on this
+    // subchannel call or (b) we can't start yet because we're still
+    // replaying send ops that need to be completed first.
+    // TODO(roth): Note that if any one op in the batch can't be sent
+    // yet due to ops that we're replaying, we don't start any of the ops
+    // in the batch.  This is probably okay, but it could conceivably
+    // lead to increased latency in some cases -- e.g., we could delay
+    // starting a recv op due to it being in the same batch with a send
+    // op.  If/when we revamp the callback protocol in
+    // transport_stream_op_batch, we may be able to fix this.
+    if (batch->send_initial_metadata &&
+        retry_state->started_send_initial_metadata) {
+      continue;
+    }
+    if (batch->send_message && retry_state->completed_send_message_count <
+                                   retry_state->started_send_message_count) {
+      continue;
+    }
+    // Note that we only start send_trailing_metadata if we have no more
+    // send_message ops to start, since we can't send down any more
+    // send_message ops after send_trailing_metadata.
+    if (batch->send_trailing_metadata &&
+        (retry_state->started_send_message_count + batch->send_message <
+             send_messages_.size() ||
+         retry_state->started_send_trailing_metadata)) {
+      continue;
+    }
+    if (batch->recv_initial_metadata &&
+        retry_state->started_recv_initial_metadata) {
+      continue;
+    }
+    if (batch->recv_message && retry_state->completed_recv_message_count <
+                                   retry_state->started_recv_message_count) {
+      continue;
+    }
+    if (batch->recv_trailing_metadata &&
+        retry_state->started_recv_trailing_metadata) {
+      // If we previously completed a recv_trailing_metadata op
+      // initiated by StartInternalRecvTrailingMetadata(), use the
+      // result of that instead of trying to re-start this op.
+      if (GPR_UNLIKELY((retry_state->recv_trailing_metadata_internal_batch !=
+                        nullptr))) {
+        // If the batch completed, then trigger the completion callback
+        // directly, so that we return the previously returned results to
+        // the application.  Otherwise, just unref the internally
+        // started subchannel batch, since we'll propagate the
+        // completion when it completes.
+        if (retry_state->completed_recv_trailing_metadata) {
+          // Batches containing recv_trailing_metadata always succeed.
+          closures->Add(
+              &retry_state->recv_trailing_metadata_ready, GRPC_ERROR_NONE,
+              "re-executing recv_trailing_metadata_ready to propagate "
+              "internally triggered result");
+        } else {
+          retry_state->recv_trailing_metadata_internal_batch->Unref();
+        }
+        retry_state->recv_trailing_metadata_internal_batch = nullptr;
+      }
+      continue;
+    }
+    // If we're not retrying, just send the batch as-is.
+    if (method_params_ == nullptr ||
+        method_params_->retry_policy() == nullptr || retry_committed_) {
+      // TODO(roth) : We should probably call
+      // MaybeInjectRecvTrailingMetadataReadyForLoadBalancingPolicy here.
+      AddClosureForSubchannelBatch(elem, batch, closures);
+      PendingBatchClear(pending);
+      continue;
+    }
+    // Create batch with the right number of callbacks.
+    const bool has_send_ops = batch->send_initial_metadata ||
+                              batch->send_message ||
+                              batch->send_trailing_metadata;
+    const int num_callbacks = has_send_ops + batch->recv_initial_metadata +
+                              batch->recv_message +
+                              batch->recv_trailing_metadata;
+    SubchannelCallBatchData* batch_data = SubchannelCallBatchData::Create(
+        elem, num_callbacks, has_send_ops /* set_on_complete */);
+    // Cache send ops if needed.
+    MaybeCacheSendOpsForBatch(pending);
+    // send_initial_metadata.
+    if (batch->send_initial_metadata) {
+      AddRetriableSendInitialMetadataOp(retry_state, batch_data);
+    }
+    // send_message.
+    if (batch->send_message) {
+      AddRetriableSendMessageOp(elem, retry_state, batch_data);
+    }
+    // send_trailing_metadata.
+    if (batch->send_trailing_metadata) {
+      AddRetriableSendTrailingMetadataOp(retry_state, batch_data);
+    }
+    // recv_initial_metadata.
+    if (batch->recv_initial_metadata) {
+      // recv_flags is only used on the server side.
+      GPR_ASSERT(batch->payload->recv_initial_metadata.recv_flags == nullptr);
+      AddRetriableRecvInitialMetadataOp(retry_state, batch_data);
+    }
+    // recv_message.
+    if (batch->recv_message) {
+      AddRetriableRecvMessageOp(retry_state, batch_data);
+    }
+    // recv_trailing_metadata.
+    if (batch->recv_trailing_metadata) {
+      AddRetriableRecvTrailingMetadataOp(retry_state, batch_data);
+    }
+    AddClosureForSubchannelBatch(elem, &batch_data->batch, closures);
+    // Track number of pending subchannel send batches.
+    // If this is the first one, take a ref to the call stack.
+    if (batch->send_initial_metadata || batch->send_message ||
+        batch->send_trailing_metadata) {
+      if (num_pending_retriable_subchannel_send_batches_ == 0) {
+        GRPC_CALL_STACK_REF(owning_call_, "subchannel_send_batches");
+      }
+      ++num_pending_retriable_subchannel_send_batches_;
+    }
+  }
+}
+
+void CallData::StartRetriableSubchannelBatches(void* arg,
+                                               grpc_error* /*ignored*/) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: constructing retriable batches",
+            chand, calld);
+  }
+  SubchannelCallRetryState* retry_state =
+      static_cast<SubchannelCallRetryState*>(
+          calld->subchannel_call_->GetParentData());
+  // Construct list of closures to execute, one for each pending batch.
+  CallCombinerClosureList closures;
+  // Replay previously-returned send_* ops if needed.
+  SubchannelCallBatchData* replay_batch_data =
+      calld->MaybeCreateSubchannelBatchForReplay(elem, retry_state);
+  if (replay_batch_data != nullptr) {
+    calld->AddClosureForSubchannelBatch(elem, &replay_batch_data->batch,
+                                        &closures);
+    // Track number of pending subchannel send batches.
+    // If this is the first one, take a ref to the call stack.
+    if (calld->num_pending_retriable_subchannel_send_batches_ == 0) {
+      GRPC_CALL_STACK_REF(calld->owning_call_, "subchannel_send_batches");
+    }
+    ++calld->num_pending_retriable_subchannel_send_batches_;
+  }
+  // Now add pending batches.
+  calld->AddSubchannelBatchesForPendingBatches(elem, retry_state, &closures);
+  // Start batches on subchannel call.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_call_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: starting %" PRIuPTR
+            " retriable batches on subchannel_call=%p",
+            chand, calld, closures.size(), calld->subchannel_call_.get());
+  }
+  // Note: This will yield the call combiner.
+  closures.RunClosures(calld->call_combiner_);
+}
+
+//
+// LB pick
+//
+
+void CallData::CreateSubchannelCall(grpc_call_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  const size_t parent_data_size =
+      enable_retries_ ? sizeof(SubchannelCallRetryState) : 0;
+  SubchannelCall::Args call_args = {
+      std::move(connected_subchannel_), pollent_, path_, call_start_time_,
+      deadline_, arena_,
+      // TODO(roth): When we implement hedging support, we will probably
+      // need to use a separate call context for each subchannel call.
+      call_context_, call_combiner_, parent_data_size};
+  grpc_error* error = GRPC_ERROR_NONE;
+  subchannel_call_ = SubchannelCall::Create(std::move(call_args), &error);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: create subchannel_call=%p: error=%s",
+            chand, this, subchannel_call_.get(), grpc_error_string(error));
+  }
+  if (GPR_UNLIKELY(error != GRPC_ERROR_NONE)) {
+    PendingBatchesFail(elem, error, YieldCallCombiner);
+  } else {
+    if (parent_data_size > 0) {
+      new (subchannel_call_->GetParentData())
+          SubchannelCallRetryState(call_context_);
+    }
+    PendingBatchesResume(elem);
+  }
+}
+
+void CallData::AsyncPickDone(grpc_call_element* elem, grpc_error* error) {
+  GRPC_CLOSURE_INIT(&pick_closure_, PickDone, elem, grpc_schedule_on_exec_ctx);
+  ExecCtx::Run(DEBUG_LOCATION, &pick_closure_, error);
+}
+
+void CallData::PickDone(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (error != GRPC_ERROR_NONE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: failed to pick subchannel: error=%s", chand,
+              calld, grpc_error_string(error));
+    }
+    calld->PendingBatchesFail(elem, GRPC_ERROR_REF(error), YieldCallCombiner);
+    return;
+  }
+  calld->CreateSubchannelCall(elem);
+}
+
+// A class to handle the call combiner cancellation callback for a
+// queued pick.
+class CallData::QueuedPickCanceller {
+ public:
+  explicit QueuedPickCanceller(grpc_call_element* elem) : elem_(elem) {
+    auto* calld = static_cast<CallData*>(elem->call_data);
+    GRPC_CALL_STACK_REF(calld->owning_call_, "QueuedPickCanceller");
+    GRPC_CLOSURE_INIT(&closure_, &CancelLocked, this,
+                      grpc_schedule_on_exec_ctx);
+    calld->call_combiner_->SetNotifyOnCancel(&closure_);
+  }
+
+ private:
+  static void CancelLocked(void* arg, grpc_error* error) {
+    auto* self = static_cast<QueuedPickCanceller*>(arg);
+    auto* chand = static_cast<ChannelData*>(self->elem_->channel_data);
+    auto* calld = static_cast<CallData*>(self->elem_->call_data);
+    MutexLock lock(chand->data_plane_mu());
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+      gpr_log(GPR_INFO,
+              "chand=%p calld=%p: cancelling queued pick: "
+              "error=%s self=%p calld->pick_canceller=%p",
+              chand, calld, grpc_error_string(error), self,
+              calld->pick_canceller_);
+    }
+    if (calld->pick_canceller_ == self && error != GRPC_ERROR_NONE) {
+      // Remove pick from list of queued picks.
+      calld->RemoveCallFromQueuedPicksLocked(self->elem_);
+      // Fail pending batches on the call.
+      calld->PendingBatchesFail(self->elem_, GRPC_ERROR_REF(error),
+                                YieldCallCombinerIfPendingBatchesFound);
+    }
+    GRPC_CALL_STACK_UNREF(calld->owning_call_, "QueuedPickCanceller");
+    delete self;
+  }
+
+  grpc_call_element* elem_;
+  grpc_closure closure_;
+};
+
+void CallData::RemoveCallFromQueuedPicksLocked(grpc_call_element* elem) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: removing from queued picks list",
+            chand, this);
+  }
+  chand->RemoveQueuedPick(&pick_, pollent_);
+  pick_queued_ = false;
+  // Lame the call combiner canceller.
+  pick_canceller_ = nullptr;
+}
+
+void CallData::AddCallToQueuedPicksLocked(grpc_call_element* elem) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: adding to queued picks list", chand,
+            this);
+  }
+  pick_queued_ = true;
+  pick_.elem = elem;
+  chand->AddQueuedPick(&pick_, pollent_);
+  // Register call combiner cancellation callback.
+  pick_canceller_ = new QueuedPickCanceller(elem);
+}
+
+void CallData::ApplyServiceConfigToCallLocked(grpc_call_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO, "chand=%p calld=%p: applying service config to call",
+            chand, this);
+  }
+  // Store a ref to the service_config in service_config_call_data_. Also, save
+  // a pointer to this in the call_context so that all future filters can access
+  // it.
+  service_config_call_data_ =
+      ServiceConfig::CallData(chand->service_config(), path_);
+  if (service_config_call_data_.service_config() != nullptr) {
+    call_context_[GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA].value =
+        &service_config_call_data_;
+    method_params_ = static_cast<ClientChannelMethodParsedConfig*>(
+        service_config_call_data_.GetMethodParsedConfig(
+            internal::ClientChannelServiceConfigParser::ParserIndex()));
+  }
+  retry_throttle_data_ = chand->retry_throttle_data();
+  if (method_params_ != nullptr) {
+    // If the deadline from the service config is shorter than the one
+    // from the client API, reset the deadline timer.
+    if (chand->deadline_checking_enabled() && method_params_->timeout() != 0) {
+      const grpc_millis per_method_deadline =
+          grpc_cycle_counter_to_millis_round_up(call_start_time_) +
+          method_params_->timeout();
+      if (per_method_deadline < deadline_) {
+        deadline_ = per_method_deadline;
+        grpc_deadline_state_reset(elem, deadline_);
+      }
+    }
+    // If the service config set wait_for_ready and the application
+    // did not explicitly set it, use the value from the service config.
+    uint32_t* send_initial_metadata_flags =
+        &pending_batches_[0]
+             .batch->payload->send_initial_metadata.send_initial_metadata_flags;
+    if (method_params_->wait_for_ready().has_value() &&
+        !(*send_initial_metadata_flags &
+          GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET)) {
+      if (method_params_->wait_for_ready().value()) {
+        *send_initial_metadata_flags |= GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+      } else {
+        *send_initial_metadata_flags &= ~GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+      }
+    }
+  }
+  // If no retry policy, disable retries.
+  // TODO(roth): Remove this when adding support for transparent retries.
+  if (method_params_ == nullptr || method_params_->retry_policy() == nullptr) {
+    enable_retries_ = false;
+  }
+}
+
+void CallData::MaybeApplyServiceConfigToCallLocked(grpc_call_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  // Apply service config data to the call only once, and only if the
+  // channel has the data available.
+  if (GPR_LIKELY(chand->received_service_config_data() &&
+                 !service_config_applied_)) {
+    service_config_applied_ = true;
+    ApplyServiceConfigToCallLocked(elem);
+  }
+}
+
+const char* PickResultTypeName(
+    LoadBalancingPolicy::PickResult::ResultType type) {
+  switch (type) {
+    case LoadBalancingPolicy::PickResult::PICK_COMPLETE:
+      return "COMPLETE";
+    case LoadBalancingPolicy::PickResult::PICK_QUEUE:
+      return "QUEUE";
+    case LoadBalancingPolicy::PickResult::PICK_FAILED:
+      return "FAILED";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+void CallData::PickSubchannel(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  bool pick_complete;
+  {
+    MutexLock lock(chand->data_plane_mu());
+    pick_complete = calld->PickSubchannelLocked(elem, &error);
+  }
+  if (pick_complete) {
+    PickDone(elem, error);
+    GRPC_ERROR_UNREF(error);
+  }
+}
+
+bool CallData::PickSubchannelLocked(grpc_call_element* elem,
+                                    grpc_error** error) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  GPR_ASSERT(connected_subchannel_ == nullptr);
+  GPR_ASSERT(subchannel_call_ == nullptr);
+  // The picker being null means that the channel is currently in IDLE state.
+  // The incoming call will make the channel exit IDLE.
+  if (chand->picker() == nullptr) {
+    // Bounce into the control plane combiner to exit IDLE.
+    chand->CheckConnectivityState(/*try_to_connect=*/true);
+    // Queue the pick, so that it will be attempted once the channel
+    // becomes connected.
+    AddCallToQueuedPicksLocked(elem);
+    return false;
+  }
+  // Apply service config to call if needed.
+  MaybeApplyServiceConfigToCallLocked(elem);
+  // If this is a retry, use the send_initial_metadata payload that
+  // we've cached; otherwise, use the pending batch.  The
+  // send_initial_metadata batch will be the first pending batch in the
+  // list, as set by GetBatchIndex() above.
+  // TODO(roth): What if the LB policy needs to add something to the
+  // call's initial metadata, and then there's a retry?  We don't want
+  // the new metadata to be added twice.  We might need to somehow
+  // allocate the subchannel batch earlier so that we can give the
+  // subchannel's copy of the metadata batch (which is copied for each
+  // attempt) to the LB policy instead the one from the parent channel.
+  LoadBalancingPolicy::PickArgs pick_args;
+  pick_args.call_state = &lb_call_state_;
+  Metadata initial_metadata(
+      this,
+      seen_send_initial_metadata_
+          ? &send_initial_metadata_
+          : pending_batches_[0]
+                .batch->payload->send_initial_metadata.send_initial_metadata);
+  pick_args.initial_metadata = &initial_metadata;
+  // Grab initial metadata flags so that we can check later if the call has
+  // wait_for_ready enabled.
+  const uint32_t send_initial_metadata_flags =
+      seen_send_initial_metadata_ ? send_initial_metadata_flags_
+                                  : pending_batches_[0]
+                                        .batch->payload->send_initial_metadata
+                                        .send_initial_metadata_flags;
+  // Attempt pick.
+  auto result = chand->picker()->Pick(pick_args);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_routing_trace)) {
+    gpr_log(GPR_INFO,
+            "chand=%p calld=%p: LB pick returned %s (subchannel=%p, error=%s)",
+            chand, this, PickResultTypeName(result.type),
+            result.subchannel.get(), grpc_error_string(result.error));
+  }
+  switch (result.type) {
+    case LoadBalancingPolicy::PickResult::PICK_FAILED: {
+      // If we're shutting down, fail all RPCs.
+      grpc_error* disconnect_error = chand->disconnect_error();
+      if (disconnect_error != GRPC_ERROR_NONE) {
+        GRPC_ERROR_UNREF(result.error);
+        if (pick_queued_) RemoveCallFromQueuedPicksLocked(elem);
+        *error = GRPC_ERROR_REF(disconnect_error);
+        return true;
+      }
+      // If wait_for_ready is false, then the error indicates the RPC
+      // attempt's final status.
+      if ((send_initial_metadata_flags &
+           GRPC_INITIAL_METADATA_WAIT_FOR_READY) == 0) {
+        // Retry if appropriate; otherwise, fail.
+        grpc_status_code status = GRPC_STATUS_OK;
+        grpc_error_get_status(result.error, deadline_, &status, nullptr,
+                              nullptr, nullptr);
+        const bool retried = enable_retries_ &&
+                             MaybeRetry(elem, nullptr /* batch_data */, status,
+                                        nullptr /* server_pushback_md */);
+        if (!retried) {
+          grpc_error* new_error =
+              GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                  "Failed to pick subchannel", &result.error, 1);
+          GRPC_ERROR_UNREF(result.error);
+          *error = new_error;
+        }
+        if (pick_queued_) RemoveCallFromQueuedPicksLocked(elem);
+        return !retried;
+      }
+      // If wait_for_ready is true, then queue to retry when we get a new
+      // picker.
+      GRPC_ERROR_UNREF(result.error);
+    }
+    // Fallthrough
+    case LoadBalancingPolicy::PickResult::PICK_QUEUE:
+      if (!pick_queued_) AddCallToQueuedPicksLocked(elem);
+      return false;
+    default:  // PICK_COMPLETE
+      if (pick_queued_) RemoveCallFromQueuedPicksLocked(elem);
+      // Handle drops.
+      if (GPR_UNLIKELY(result.subchannel == nullptr)) {
+        result.error = grpc_error_set_int(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "Call dropped by load balancing policy"),
+            GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+      } else {
+        // Grab a ref to the connected subchannel while we're still
+        // holding the data plane mutex.
+        connected_subchannel_ =
+            chand->GetConnectedSubchannelInDataPlane(result.subchannel.get());
+        GPR_ASSERT(connected_subchannel_ != nullptr);
+      }
+      lb_recv_trailing_metadata_ready_ = result.recv_trailing_metadata_ready;
+      *error = result.error;
+      return true;
+  }
+}
+
+}  // namespace
+}  // namespace grpc_core
+
+/*************************************************************************
+ * EXPORTED SYMBOLS
+ */
+
+using grpc_core::CallData;
+using grpc_core::ChannelData;
+
+const grpc_channel_filter grpc_client_channel_filter = {
+    CallData::StartTransportStreamOpBatch,
+    ChannelData::StartTransportOp,
+    sizeof(CallData),
+    CallData::Init,
+    CallData::SetPollent,
+    CallData::Destroy,
+    sizeof(ChannelData),
+    ChannelData::Init,
+    ChannelData::Destroy,
+    ChannelData::GetChannelInfo,
+    "client-channel",
+};
+
+grpc_connectivity_state grpc_client_channel_check_connectivity_state(
+    grpc_channel_element* elem, int try_to_connect) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  return chand->CheckConnectivityState(try_to_connect);
+}
+
+int grpc_client_channel_num_external_connectivity_watchers(
+    grpc_channel_element* elem) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  return chand->NumExternalConnectivityWatchers();
+}
+
+void grpc_client_channel_watch_connectivity_state(
+    grpc_channel_element* elem, grpc_polling_entity pollent,
+    grpc_connectivity_state* state, grpc_closure* closure,
+    grpc_closure* watcher_timer_init) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  if (state == nullptr) {
+    // Handle cancellation.
+    GPR_ASSERT(watcher_timer_init == nullptr);
+    chand->RemoveExternalConnectivityWatcher(closure, /*cancel=*/true);
+    return;
+  }
+  // Handle addition.
+  return chand->AddExternalConnectivityWatcher(pollent, state, closure,
+                                               watcher_timer_init);
+}
+
+void grpc_client_channel_start_connectivity_watch(
+    grpc_channel_element* elem, grpc_connectivity_state initial_state,
+    grpc_core::OrphanablePtr<grpc_core::AsyncConnectivityStateWatcherInterface>
+        watcher) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->AddConnectivityWatcher(initial_state, std::move(watcher));
+}
+
+void grpc_client_channel_stop_connectivity_watch(
+    grpc_channel_element* elem,
+    grpc_core::AsyncConnectivityStateWatcherInterface* watcher) {
+  auto* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->RemoveConnectivityWatcher(watcher);
+}
+
+grpc_core::RefCountedPtr<grpc_core::SubchannelCall>
+grpc_client_channel_get_subchannel_call(grpc_call_element* elem) {
+  auto* calld = static_cast<CallData*>(elem->call_data);
+  return calld->subchannel_call();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.h
new file mode 100644
index 0000000..2ba2b87
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/client_channel_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+extern grpc_core::TraceFlag grpc_client_channel_trace;
+
+// Channel arg key for server URI string.
+#define GRPC_ARG_SERVER_URI "grpc.server_uri"
+
+/* A client channel is a channel that begins disconnected, and can connect
+   to some endpoint on demand. If that endpoint disconnects, it will be
+   connected to again later.
+
+   Calls on a disconnected client channel are queued until a connection is
+   established. */
+
+extern const grpc_channel_filter grpc_client_channel_filter;
+
+grpc_connectivity_state grpc_client_channel_check_connectivity_state(
+    grpc_channel_element* elem, int try_to_connect);
+
+int grpc_client_channel_num_external_connectivity_watchers(
+    grpc_channel_element* elem);
+
+// Starts a one-time connectivity state watch.  When the channel's state
+// becomes different from *state, sets *state to the new state and
+// schedules on_complete.  The watcher_timer_init callback is invoked as
+// soon as the watch is actually started (i.e., after hopping into the
+// client channel combiner).  I/O will be serviced via pollent.
+//
+// This is intended to be used when starting a watch from outside of C-core
+// via grpc_channel_watch_connectivity_state().  It should not be used
+// by other callers.
+void grpc_client_channel_watch_connectivity_state(
+    grpc_channel_element* elem, grpc_polling_entity pollent,
+    grpc_connectivity_state* state, grpc_closure* on_complete,
+    grpc_closure* watcher_timer_init);
+
+// Starts and stops a connectivity watch.  The watcher will be initially
+// notified as soon as the state changes from initial_state and then on
+// every subsequent state change until either the watch is stopped or
+// it is notified that the state has changed to SHUTDOWN.
+//
+// This is intended to be used when starting watches from code inside of
+// C-core (e.g., for a nested control plane channel for things like xds).
+void grpc_client_channel_start_connectivity_watch(
+    grpc_channel_element* elem, grpc_connectivity_state initial_state,
+    grpc_core::OrphanablePtr<grpc_core::AsyncConnectivityStateWatcherInterface>
+        watcher);
+void grpc_client_channel_stop_connectivity_watch(
+    grpc_channel_element* elem,
+    grpc_core::AsyncConnectivityStateWatcherInterface* watcher);
+
+/* Debug helper: pull the subchannel call from a call stack element */
+grpc_core::RefCountedPtr<grpc_core::SubchannelCall>
+grpc_client_channel_get_subchannel_call(grpc_call_element* elem);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.cc
new file mode 100644
index 0000000..9a9e3b7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.cc	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+#include <grpc/support/string_util.h>
+
+namespace grpc_core {
+namespace channelz {
+
+SubchannelNode::SubchannelNode(std::string target_address,
+                               size_t channel_tracer_max_nodes)
+    : BaseNode(EntityType::kSubchannel, target_address),
+      target_(std::move(target_address)),
+      trace_(channel_tracer_max_nodes) {}
+
+SubchannelNode::~SubchannelNode() {}
+
+void SubchannelNode::UpdateConnectivityState(grpc_connectivity_state state) {
+  connectivity_state_.Store(state, MemoryOrder::RELAXED);
+}
+
+void SubchannelNode::SetChildSocket(RefCountedPtr<SocketNode> socket) {
+  MutexLock lock(&socket_mu_);
+  child_socket_ = std::move(socket);
+}
+
+Json SubchannelNode::RenderJson() {
+  // Create and fill the data child.
+  grpc_connectivity_state state =
+      connectivity_state_.Load(MemoryOrder::RELAXED);
+  Json::Object data = {
+      {"state",
+       Json::Object{
+           {"state", ConnectivityStateName(state)},
+       }},
+      {"target", target_},
+  };
+
+  // Fill in the channel trace if applicable
+  Json trace_json = trace_.RenderJson();
+  if (trace_json.type() != Json::Type::JSON_NULL) {
+    data["trace"] = std::move(trace_json);
+  }
+  // Ask CallCountingHelper to populate call count data.
+  call_counter_.PopulateCallCounts(&data);
+  // Construct top-level object.
+  Json::Object object{
+      {"ref",
+       Json::Object{
+           {"subchannelId", std::to_string(uuid())},
+       }},
+      {"data", std::move(data)},
+  };
+  // Populate the child socket.
+  RefCountedPtr<SocketNode> child_socket;
+  {
+    MutexLock lock(&socket_mu_);
+    child_socket = child_socket_;
+  }
+  if (child_socket != nullptr && child_socket->uuid() != 0) {
+    object["socketRef"] = Json::Array{
+        Json::Object{
+            {"socketId", std::to_string(child_socket->uuid())},
+            {"name", child_socket->name()},
+        },
+    };
+  }
+  return object;
+}
+
+}  // namespace channelz
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.h
new file mode 100644
index 0000000..c29569a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_channelz.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+
+namespace grpc_core {
+
+class Subchannel;
+
+namespace channelz {
+
+class SubchannelNode : public BaseNode {
+ public:
+  SubchannelNode(std::string target_address, size_t channel_tracer_max_nodes);
+  ~SubchannelNode() override;
+
+  // Sets the subchannel's connectivity state without health checking.
+  void UpdateConnectivityState(grpc_connectivity_state state);
+
+  // Used when the subchannel's child socket changes. This should be set when
+  // the subchannel's transport is created and set to nullptr when the
+  // subchannel unrefs the transport.
+  void SetChildSocket(RefCountedPtr<SocketNode> socket);
+
+  Json RenderJson() override;
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+ private:
+  Atomic<grpc_connectivity_state> connectivity_state_{GRPC_CHANNEL_IDLE};
+  Mutex socket_mu_;
+  RefCountedPtr<SocketNode> child_socket_;
+  std::string target_;
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_CHANNELZ_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.cc
new file mode 100644
index 0000000..c0d853e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.cc	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_factory.h"
+#include "src/core/lib/channel/channel_args.h"
+
+// Channel arg key for client channel factory.
+#define GRPC_ARG_CLIENT_CHANNEL_FACTORY "grpc.client_channel_factory"
+
+namespace grpc_core {
+
+namespace {
+
+void* factory_arg_copy(void* f) { return f; }
+void factory_arg_destroy(void* /*f*/) {}
+int factory_arg_cmp(void* factory1, void* factory2) {
+  return GPR_ICMP(factory1, factory2);
+}
+const grpc_arg_pointer_vtable factory_arg_vtable = {
+    factory_arg_copy, factory_arg_destroy, factory_arg_cmp};
+
+}  // namespace
+
+grpc_arg ClientChannelFactory::CreateChannelArg(ClientChannelFactory* factory) {
+  return grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_ARG_CLIENT_CHANNEL_FACTORY), factory,
+      &factory_arg_vtable);
+}
+
+ClientChannelFactory* ClientChannelFactory::GetFromChannelArgs(
+    const grpc_channel_args* args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_CLIENT_CHANNEL_FACTORY);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return nullptr;
+  return static_cast<ClientChannelFactory*>(arg->value.pointer.p);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.h
new file mode 100644
index 0000000..79797bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_factory.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+namespace grpc_core {
+
+class ClientChannelFactory {
+ public:
+  virtual ~ClientChannelFactory() = default;
+
+  // Creates a subchannel with the specified args.
+  virtual Subchannel* CreateSubchannel(const grpc_channel_args* args) = 0;
+
+  // Returns a channel arg containing the specified factory.
+  static grpc_arg CreateChannelArg(ClientChannelFactory* factory);
+
+  // Returns the factory from args, or null if not found.
+  static ClientChannelFactory* GetFromChannelArgs(
+      const grpc_channel_args* args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_plugin.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_plugin.cc
new file mode 100644
index 0000000..2788d4b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/client_channel_plugin.cc	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/client_channel/backup_poller.h"
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/global_subchannel_pool.h"
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/http_proxy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/resolver_result_parsing.h"
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+#include "src/core/lib/surface/channel_init.h"
+
+static bool append_filter(grpc_channel_stack_builder* builder, void* arg) {
+  return grpc_channel_stack_builder_append_filter(
+      builder, static_cast<const grpc_channel_filter*>(arg), nullptr, nullptr);
+}
+
+void grpc_client_channel_init(void) {
+  grpc_core::ServiceConfig::Init();
+  grpc_core::internal::ClientChannelServiceConfigParser::Register();
+  grpc_core::LoadBalancingPolicyRegistry::Builder::InitRegistry();
+  grpc_core::ResolverRegistry::Builder::InitRegistry();
+  grpc_core::internal::ServerRetryThrottleMap::Init();
+  grpc_core::ProxyMapperRegistry::Init();
+  grpc_core::RegisterHttpProxyMapper();
+  grpc_core::GlobalSubchannelPool::Init();
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, append_filter,
+      (void*)&grpc_client_channel_filter);
+  grpc_http_connect_register_handshaker_factory();
+  grpc_client_channel_global_init_backup_polling();
+}
+
+void grpc_client_channel_shutdown(void) {
+  grpc_core::GlobalSubchannelPool::Shutdown();
+  grpc_channel_init_shutdown();
+  grpc_core::ProxyMapperRegistry::Shutdown();
+  grpc_core::internal::ServerRetryThrottleMap::Shutdown();
+  grpc_core::ResolverRegistry::Builder::ShutdownRegistry();
+  grpc_core::LoadBalancingPolicyRegistry::Builder::ShutdownRegistry();
+  grpc_core::ServiceConfig::Shutdown();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/connector.h
new file mode 100644
index 0000000..2564714
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/connector.h	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/transport/transport.h"
+
+namespace grpc_core {
+
+// Interface for connection-establishment functionality.
+// Each transport that supports client channels (e.g., not inproc) must
+// supply an implementation of this.
+class SubchannelConnector : public InternallyRefCounted<SubchannelConnector> {
+ public:
+  struct Args {
+    // Set of pollsets interested in this connection.
+    grpc_pollset_set* interested_parties;
+    // Deadline for connection.
+    grpc_millis deadline;
+    // Channel args to be passed to handshakers and transport.
+    const grpc_channel_args* channel_args;
+  };
+
+  struct Result {
+    // The connected transport.
+    grpc_transport* transport = nullptr;
+    // Channel args to be passed to filters.
+    const grpc_channel_args* channel_args = nullptr;
+    // Channelz socket node of the connected transport, if any.
+    RefCountedPtr<channelz::SocketNode> socket_node;
+
+    void Reset() {
+      transport = nullptr;
+      channel_args = nullptr;
+      socket_node.reset();
+    }
+  };
+
+  // Attempts to connect.
+  // When complete, populates *result and invokes notify.
+  // Only one connection attempt may be in progress at any one time.
+  virtual void Connect(const Args& args, Result* result,
+                       grpc_closure* notify) = 0;
+
+  // Cancels any in-flight connection attempt and shuts down the
+  // connector.
+  virtual void Shutdown(grpc_error* error) = 0;
+
+  void Orphan() override {
+    Shutdown(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Subchannel disconnected"));
+    Unref();
+  }
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.cc
new file mode 100644
index 0000000..339a477
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.cc	
@@ -0,0 +1,179 @@
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/global_subchannel_pool.h"
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+namespace grpc_core {
+
+GlobalSubchannelPool::GlobalSubchannelPool() {
+  subchannel_map_ = grpc_avl_create(&subchannel_avl_vtable_);
+  gpr_mu_init(&mu_);
+}
+
+GlobalSubchannelPool::~GlobalSubchannelPool() {
+  gpr_mu_destroy(&mu_);
+  grpc_avl_unref(subchannel_map_, nullptr);
+}
+
+void GlobalSubchannelPool::Init() {
+  instance_ = new RefCountedPtr<GlobalSubchannelPool>(
+      MakeRefCounted<GlobalSubchannelPool>());
+}
+
+void GlobalSubchannelPool::Shutdown() {
+  // To ensure Init() was called before.
+  GPR_ASSERT(instance_ != nullptr);
+  // To ensure Shutdown() was not called before.
+  GPR_ASSERT(*instance_ != nullptr);
+  instance_->reset();
+  delete instance_;
+}
+
+RefCountedPtr<GlobalSubchannelPool> GlobalSubchannelPool::instance() {
+  GPR_ASSERT(instance_ != nullptr);
+  GPR_ASSERT(*instance_ != nullptr);
+  return *instance_;
+}
+
+Subchannel* GlobalSubchannelPool::RegisterSubchannel(SubchannelKey* key,
+                                                     Subchannel* constructed) {
+  Subchannel* c = nullptr;
+  // Compare and swap (CAS) loop:
+  while (c == nullptr) {
+    // Ref the shared map to have a local copy.
+    gpr_mu_lock(&mu_);
+    grpc_avl old_map = grpc_avl_ref(subchannel_map_, nullptr);
+    gpr_mu_unlock(&mu_);
+    // Check to see if a subchannel already exists.
+    c = static_cast<Subchannel*>(grpc_avl_get(old_map, key, nullptr));
+    if (c != nullptr) {
+      // The subchannel already exists. Try to reuse it.
+      c = GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(c, "subchannel_register+reuse");
+      if (c != nullptr) {
+        GRPC_SUBCHANNEL_UNREF(constructed,
+                              "subchannel_register+found_existing");
+        // Exit the CAS loop without modifying the shared map.
+      }  // Else, reuse failed, so retry CAS loop.
+    } else {
+      // There hasn't been such subchannel. Add one.
+      // Note that we should ref the old map first because grpc_avl_add() will
+      // unref it while we still need to access it later.
+      grpc_avl new_map = grpc_avl_add(
+          grpc_avl_ref(old_map, nullptr), new SubchannelKey(*key),
+          GRPC_SUBCHANNEL_WEAK_REF(constructed, "subchannel_register+new"),
+          nullptr);
+      // Try to publish the change to the shared map. It may happen (but
+      // unlikely) that some other thread has changed the shared map, so compare
+      // to make sure it's unchanged before swapping. Retry if it's changed.
+      gpr_mu_lock(&mu_);
+      if (old_map.root == subchannel_map_.root) {
+        GPR_SWAP(grpc_avl, new_map, subchannel_map_);
+        c = constructed;
+      }
+      gpr_mu_unlock(&mu_);
+      grpc_avl_unref(new_map, nullptr);
+    }
+    grpc_avl_unref(old_map, nullptr);
+  }
+  return c;
+}
+
+void GlobalSubchannelPool::UnregisterSubchannel(SubchannelKey* key) {
+  bool done = false;
+  // Compare and swap (CAS) loop:
+  while (!done) {
+    // Ref the shared map to have a local copy.
+    gpr_mu_lock(&mu_);
+    grpc_avl old_map = grpc_avl_ref(subchannel_map_, nullptr);
+    gpr_mu_unlock(&mu_);
+    // Remove the subchannel.
+    // Note that we should ref the old map first because grpc_avl_remove() will
+    // unref it while we still need to access it later.
+    grpc_avl new_map =
+        grpc_avl_remove(grpc_avl_ref(old_map, nullptr), key, nullptr);
+    // Try to publish the change to the shared map. It may happen (but
+    // unlikely) that some other thread has changed the shared map, so compare
+    // to make sure it's unchanged before swapping. Retry if it's changed.
+    gpr_mu_lock(&mu_);
+    if (old_map.root == subchannel_map_.root) {
+      GPR_SWAP(grpc_avl, new_map, subchannel_map_);
+      done = true;
+    }
+    gpr_mu_unlock(&mu_);
+    grpc_avl_unref(new_map, nullptr);
+    grpc_avl_unref(old_map, nullptr);
+  }
+}
+
+Subchannel* GlobalSubchannelPool::FindSubchannel(SubchannelKey* key) {
+  // Lock, and take a reference to the subchannel map.
+  // We don't need to do the search under a lock as AVL's are immutable.
+  gpr_mu_lock(&mu_);
+  grpc_avl index = grpc_avl_ref(subchannel_map_, nullptr);
+  gpr_mu_unlock(&mu_);
+  Subchannel* c = static_cast<Subchannel*>(grpc_avl_get(index, key, nullptr));
+  if (c != nullptr) c = GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(c, "found_from_pool");
+  grpc_avl_unref(index, nullptr);
+  return c;
+}
+
+RefCountedPtr<GlobalSubchannelPool>* GlobalSubchannelPool::instance_ = nullptr;
+
+namespace {
+
+void sck_avl_destroy(void* p, void* /*user_data*/) {
+  SubchannelKey* key = static_cast<SubchannelKey*>(p);
+  delete key;
+}
+
+void* sck_avl_copy(void* p, void* /*unused*/) {
+  const SubchannelKey* key = static_cast<const SubchannelKey*>(p);
+  auto* new_key = new SubchannelKey(*key);
+  return static_cast<void*>(new_key);
+}
+
+long sck_avl_compare(void* a, void* b, void* /*unused*/) {
+  const SubchannelKey* key_a = static_cast<const SubchannelKey*>(a);
+  const SubchannelKey* key_b = static_cast<const SubchannelKey*>(b);
+  return key_a->Cmp(*key_b);
+}
+
+void scv_avl_destroy(void* p, void* /*user_data*/) {
+  GRPC_SUBCHANNEL_WEAK_UNREF((Subchannel*)p, "global_subchannel_pool");
+}
+
+void* scv_avl_copy(void* p, void* /*unused*/) {
+  GRPC_SUBCHANNEL_WEAK_REF((Subchannel*)p, "global_subchannel_pool");
+  return p;
+}
+
+}  // namespace
+
+const grpc_avl_vtable GlobalSubchannelPool::subchannel_avl_vtable_ = {
+    sck_avl_destroy,  // destroy_key
+    sck_avl_copy,     // copy_key
+    sck_avl_compare,  // compare_keys
+    scv_avl_destroy,  // destroy_value
+    scv_avl_copy      // copy_value
+};
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.h
new file mode 100644
index 0000000..96dc8d7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/global_subchannel_pool.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+
+namespace grpc_core {
+
+// The global subchannel pool. It shares subchannels among channels. There
+// should be only one instance of this class. Init() should be called once at
+// the filter initialization time; Shutdown() should be called once at the
+// filter shutdown time.
+// TODO(juanlishen): Enable subchannel retention.
+class GlobalSubchannelPool final : public SubchannelPoolInterface {
+ public:
+  // The ctor and dtor are not intended to use directly.
+  GlobalSubchannelPool();
+  ~GlobalSubchannelPool() override;
+
+  // Should be called exactly once at filter initialization time.
+  static void Init();
+  // Should be called exactly once at filter shutdown time.
+  static void Shutdown();
+
+  // Gets the singleton instance.
+  static RefCountedPtr<GlobalSubchannelPool> instance();
+
+  // Implements interface methods.
+  Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                 Subchannel* constructed) override;
+  void UnregisterSubchannel(SubchannelKey* key) override;
+  Subchannel* FindSubchannel(SubchannelKey* key) override;
+
+ private:
+  // The singleton instance. (It's a pointer to RefCountedPtr so that this
+  // non-local static object can be trivially destructible.)
+  static RefCountedPtr<GlobalSubchannelPool>* instance_;
+
+  // The vtable for subchannel operations in an AVL tree.
+  static const grpc_avl_vtable subchannel_avl_vtable_;
+  // A map from subchannel key to subchannel.
+  grpc_avl subchannel_map_;
+  // To protect subchannel_map_.
+  gpr_mu mu_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_GLOBAL_SUBCHANNEL_POOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.cc
new file mode 100644
index 0000000..aff7040
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.cc	
@@ -0,0 +1,625 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include "src/core/ext/filters/client_channel/health/health_check_client.h"
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/status_metadata.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h"
+#else
+  #include  "src/proto/grpc/health/v1/health.upb.h"
+#endif
+
+#define HEALTH_CHECK_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define HEALTH_CHECK_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define HEALTH_CHECK_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define HEALTH_CHECK_RECONNECT_JITTER 0.2
+
+namespace grpc_core {
+
+TraceFlag grpc_health_check_client_trace(false, "health_check_client");
+
+//
+// HealthCheckClient
+//
+
+HealthCheckClient::HealthCheckClient(
+    const char* service_name,
+    RefCountedPtr<ConnectedSubchannel> connected_subchannel,
+    grpc_pollset_set* interested_parties,
+    RefCountedPtr<channelz::SubchannelNode> channelz_node,
+    RefCountedPtr<ConnectivityStateWatcherInterface> watcher)
+    : InternallyRefCounted<HealthCheckClient>(&grpc_health_check_client_trace),
+      service_name_(service_name),
+      connected_subchannel_(std::move(connected_subchannel)),
+      interested_parties_(interested_parties),
+      channelz_node_(std::move(channelz_node)),
+      watcher_(std::move(watcher)),
+      retry_backoff_(
+          BackOff::Options()
+              .set_initial_backoff(
+                  HEALTH_CHECK_INITIAL_CONNECT_BACKOFF_SECONDS * 1000)
+              .set_multiplier(HEALTH_CHECK_RECONNECT_BACKOFF_MULTIPLIER)
+              .set_jitter(HEALTH_CHECK_RECONNECT_JITTER)
+              .set_max_backoff(HEALTH_CHECK_RECONNECT_MAX_BACKOFF_SECONDS *
+                               1000)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "created HealthCheckClient %p", this);
+  }
+  GRPC_CLOSURE_INIT(&retry_timer_callback_, OnRetryTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  StartCall();
+}
+
+HealthCheckClient::~HealthCheckClient() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "destroying HealthCheckClient %p", this);
+  }
+}
+
+void HealthCheckClient::SetHealthStatus(grpc_connectivity_state state,
+                                        const char* reason) {
+  MutexLock lock(&mu_);
+  SetHealthStatusLocked(state, reason);
+}
+
+void HealthCheckClient::SetHealthStatusLocked(grpc_connectivity_state state,
+                                              const char* reason) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "HealthCheckClient %p: setting state=%s reason=%s", this,
+            ConnectivityStateName(state), reason);
+  }
+  if (watcher_ != nullptr) watcher_->Notify(state);
+}
+
+void HealthCheckClient::Orphan() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "HealthCheckClient %p: shutting down", this);
+  }
+  {
+    MutexLock lock(&mu_);
+    shutting_down_ = true;
+    watcher_.reset();
+    call_state_.reset();
+    if (retry_timer_callback_pending_) {
+      grpc_timer_cancel(&retry_timer_);
+    }
+  }
+  Unref(DEBUG_LOCATION, "orphan");
+}
+
+void HealthCheckClient::StartCall() {
+  MutexLock lock(&mu_);
+  StartCallLocked();
+}
+
+void HealthCheckClient::StartCallLocked() {
+  if (shutting_down_) return;
+  GPR_ASSERT(call_state_ == nullptr);
+  SetHealthStatusLocked(GRPC_CHANNEL_CONNECTING, "starting health watch");
+  call_state_ = MakeOrphanable<CallState>(Ref(), interested_parties_);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "HealthCheckClient %p: created CallState %p", this,
+            call_state_.get());
+  }
+  call_state_->StartCall();
+}
+
+void HealthCheckClient::StartRetryTimer() {
+  MutexLock lock(&mu_);
+  SetHealthStatusLocked(GRPC_CHANNEL_TRANSIENT_FAILURE,
+                        "health check call failed; will retry after backoff");
+  grpc_millis next_try = retry_backoff_.NextAttemptTime();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "HealthCheckClient %p: health check call lost...", this);
+    grpc_millis timeout = next_try - ExecCtx::Get()->Now();
+    if (timeout > 0) {
+      gpr_log(GPR_INFO,
+              "HealthCheckClient %p: ... will retry in %" PRId64 "ms.", this,
+              timeout);
+    } else {
+      gpr_log(GPR_INFO, "HealthCheckClient %p: ... retrying immediately.",
+              this);
+    }
+  }
+  // Ref for callback, tracked manually.
+  Ref(DEBUG_LOCATION, "health_retry_timer").release();
+  retry_timer_callback_pending_ = true;
+  grpc_timer_init(&retry_timer_, next_try, &retry_timer_callback_);
+}
+
+void HealthCheckClient::OnRetryTimer(void* arg, grpc_error* error) {
+  HealthCheckClient* self = static_cast<HealthCheckClient*>(arg);
+  {
+    MutexLock lock(&self->mu_);
+    self->retry_timer_callback_pending_ = false;
+    if (!self->shutting_down_ && error == GRPC_ERROR_NONE &&
+        self->call_state_ == nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+        gpr_log(GPR_INFO, "HealthCheckClient %p: restarting health check call",
+                self);
+      }
+      self->StartCallLocked();
+    }
+  }
+  self->Unref(DEBUG_LOCATION, "health_retry_timer");
+}
+
+//
+// protobuf helpers
+//
+
+namespace {
+
+void EncodeRequest(const char* service_name,
+                   ManualConstructor<SliceBufferByteStream>* send_message) {
+  upb::Arena arena;
+  grpc_health_v1_HealthCheckRequest* request_struct =
+      grpc_health_v1_HealthCheckRequest_new(arena.ptr());
+  grpc_health_v1_HealthCheckRequest_set_service(
+      request_struct, upb_strview_makez(service_name));
+  size_t buf_length;
+  char* buf = grpc_health_v1_HealthCheckRequest_serialize(
+      request_struct, arena.ptr(), &buf_length);
+  grpc_slice request_slice = GRPC_SLICE_MALLOC(buf_length);
+  memcpy(GRPC_SLICE_START_PTR(request_slice), buf, buf_length);
+  grpc_slice_buffer slice_buffer;
+  grpc_slice_buffer_init(&slice_buffer);
+  grpc_slice_buffer_add(&slice_buffer, request_slice);
+  send_message->Init(&slice_buffer, 0);
+  grpc_slice_buffer_destroy_internal(&slice_buffer);
+}
+
+// Returns true if healthy.
+// If there was an error parsing the response, sets *error and returns false.
+bool DecodeResponse(grpc_slice_buffer* slice_buffer, grpc_error** error) {
+  // If message is empty, assume unhealthy.
+  if (slice_buffer->length == 0) {
+    *error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("health check response was empty");
+    return false;
+  }
+  // Concatenate the slices to form a single string.
+  std::unique_ptr<uint8_t> recv_message_deleter;
+  uint8_t* recv_message;
+  if (slice_buffer->count == 1) {
+    recv_message = GRPC_SLICE_START_PTR(slice_buffer->slices[0]);
+  } else {
+    recv_message = static_cast<uint8_t*>(gpr_malloc(slice_buffer->length));
+    recv_message_deleter.reset(recv_message);
+    size_t offset = 0;
+    for (size_t i = 0; i < slice_buffer->count; ++i) {
+      memcpy(recv_message + offset,
+             GRPC_SLICE_START_PTR(slice_buffer->slices[i]),
+             GRPC_SLICE_LENGTH(slice_buffer->slices[i]));
+      offset += GRPC_SLICE_LENGTH(slice_buffer->slices[i]);
+    }
+  }
+  // Deserialize message.
+  upb::Arena arena;
+  grpc_health_v1_HealthCheckResponse* response_struct =
+      grpc_health_v1_HealthCheckResponse_parse(
+          reinterpret_cast<char*>(recv_message), slice_buffer->length,
+          arena.ptr());
+  if (response_struct == nullptr) {
+    // Can't parse message; assume unhealthy.
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "cannot parse health check response");
+    return false;
+  }
+  int32_t status = grpc_health_v1_HealthCheckResponse_status(response_struct);
+  return status == grpc_health_v1_HealthCheckResponse_SERVING;
+}
+
+}  // namespace
+
+//
+// HealthCheckClient::CallState
+//
+
+HealthCheckClient::CallState::CallState(
+    RefCountedPtr<HealthCheckClient> health_check_client,
+    grpc_pollset_set* interested_parties)
+    : health_check_client_(std::move(health_check_client)),
+      pollent_(grpc_polling_entity_create_from_pollset_set(interested_parties)),
+      arena_(Arena::Create(health_check_client_->connected_subchannel_
+                               ->GetInitialCallSizeEstimate(0))),
+      payload_(context_) {}
+
+HealthCheckClient::CallState::~CallState() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO, "HealthCheckClient %p: destroying CallState %p",
+            health_check_client_.get(), this);
+  }
+  for (size_t i = 0; i < GRPC_CONTEXT_COUNT; i++) {
+    if (context_[i].destroy != nullptr) {
+      context_[i].destroy(context_[i].value);
+    }
+  }
+  // Unset the call combiner cancellation closure.  This has the
+  // effect of scheduling the previously set cancellation closure, if
+  // any, so that it can release any internal references it may be
+  // holding to the call stack. Also flush the closures on exec_ctx so that
+  // filters that schedule cancel notification closures on exec_ctx do not
+  // need to take a ref of the call stack to guarantee closure liveness.
+  call_combiner_.SetNotifyOnCancel(nullptr);
+  ExecCtx::Get()->Flush();
+  arena_->Destroy();
+}
+
+void HealthCheckClient::CallState::Orphan() {
+  call_combiner_.Cancel(GRPC_ERROR_CANCELLED);
+  Cancel();
+}
+
+void HealthCheckClient::CallState::StartCall() {
+  SubchannelCall::Args args = {
+      health_check_client_->connected_subchannel_,
+      &pollent_,
+      GRPC_MDSTR_SLASH_GRPC_DOT_HEALTH_DOT_V1_DOT_HEALTH_SLASH_WATCH,
+      gpr_get_cycle_counter(),  // start_time
+      GRPC_MILLIS_INF_FUTURE,   // deadline
+      arena_,
+      context_,
+      &call_combiner_,
+      0,  // parent_data_size
+  };
+  grpc_error* error = GRPC_ERROR_NONE;
+  call_ = SubchannelCall::Create(std::move(args), &error).release();
+  // Register after-destruction callback.
+  GRPC_CLOSURE_INIT(&after_call_stack_destruction_, AfterCallStackDestruction,
+                    this, grpc_schedule_on_exec_ctx);
+  call_->SetAfterCallStackDestroy(&after_call_stack_destruction_);
+  // Check if creation failed.
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR,
+            "HealthCheckClient %p CallState %p: error creating health "
+            "checking call on subchannel (%s); will retry",
+            health_check_client_.get(), this, grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+    // Schedule instead of running directly, since we must not be
+    // holding health_check_client_->mu_ when CallEnded() is called.
+    call_->Ref(DEBUG_LOCATION, "call_end_closure").release();
+    ExecCtx::Run(
+        DEBUG_LOCATION,
+        GRPC_CLOSURE_INIT(&batch_.handler_private.closure, CallEndedRetry, this,
+                          grpc_schedule_on_exec_ctx),
+        GRPC_ERROR_NONE);
+    return;
+  }
+  // Initialize payload and batch.
+  payload_.context = context_;
+  batch_.payload = &payload_;
+  // on_complete callback takes ref, handled manually.
+  call_->Ref(DEBUG_LOCATION, "on_complete").release();
+  batch_.on_complete = GRPC_CLOSURE_INIT(&on_complete_, OnComplete, this,
+                                         grpc_schedule_on_exec_ctx);
+  // Add send_initial_metadata op.
+  grpc_metadata_batch_init(&send_initial_metadata_);
+  error = grpc_metadata_batch_add_head(
+      &send_initial_metadata_, &path_metadata_storage_,
+      grpc_mdelem_from_slices(
+          GRPC_MDSTR_PATH,
+          GRPC_MDSTR_SLASH_GRPC_DOT_HEALTH_DOT_V1_DOT_HEALTH_SLASH_WATCH),
+      GRPC_BATCH_PATH);
+  GPR_ASSERT(error == GRPC_ERROR_NONE);
+  payload_.send_initial_metadata.send_initial_metadata =
+      &send_initial_metadata_;
+  payload_.send_initial_metadata.send_initial_metadata_flags = 0;
+  payload_.send_initial_metadata.peer_string = nullptr;
+  batch_.send_initial_metadata = true;
+  // Add send_message op.
+  EncodeRequest(health_check_client_->service_name_, &send_message_);
+  payload_.send_message.send_message.reset(send_message_.get());
+  batch_.send_message = true;
+  // Add send_trailing_metadata op.
+  grpc_metadata_batch_init(&send_trailing_metadata_);
+  payload_.send_trailing_metadata.send_trailing_metadata =
+      &send_trailing_metadata_;
+  batch_.send_trailing_metadata = true;
+  // Add recv_initial_metadata op.
+  grpc_metadata_batch_init(&recv_initial_metadata_);
+  payload_.recv_initial_metadata.recv_initial_metadata =
+      &recv_initial_metadata_;
+  payload_.recv_initial_metadata.recv_flags = nullptr;
+  payload_.recv_initial_metadata.trailing_metadata_available = nullptr;
+  payload_.recv_initial_metadata.peer_string = nullptr;
+  // recv_initial_metadata_ready callback takes ref, handled manually.
+  call_->Ref(DEBUG_LOCATION, "recv_initial_metadata_ready").release();
+  payload_.recv_initial_metadata.recv_initial_metadata_ready =
+      GRPC_CLOSURE_INIT(&recv_initial_metadata_ready_, RecvInitialMetadataReady,
+                        this, grpc_schedule_on_exec_ctx);
+  batch_.recv_initial_metadata = true;
+  // Add recv_message op.
+  payload_.recv_message.recv_message = &recv_message_;
+  // recv_message callback takes ref, handled manually.
+  call_->Ref(DEBUG_LOCATION, "recv_message_ready").release();
+  payload_.recv_message.recv_message_ready = GRPC_CLOSURE_INIT(
+      &recv_message_ready_, RecvMessageReady, this, grpc_schedule_on_exec_ctx);
+  batch_.recv_message = true;
+  // Start batch.
+  StartBatch(&batch_);
+  // Initialize recv_trailing_metadata batch.
+  recv_trailing_metadata_batch_.payload = &payload_;
+  // Add recv_trailing_metadata op.
+  grpc_metadata_batch_init(&recv_trailing_metadata_);
+  payload_.recv_trailing_metadata.recv_trailing_metadata =
+      &recv_trailing_metadata_;
+  payload_.recv_trailing_metadata.collect_stats = &collect_stats_;
+  // This callback signals the end of the call, so it relies on the
+  // initial ref instead of taking a new ref.  When it's invoked, the
+  // initial ref is released.
+  payload_.recv_trailing_metadata.recv_trailing_metadata_ready =
+      GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready_,
+                        RecvTrailingMetadataReady, this,
+                        grpc_schedule_on_exec_ctx);
+  recv_trailing_metadata_batch_.recv_trailing_metadata = true;
+  // Start recv_trailing_metadata batch.
+  StartBatch(&recv_trailing_metadata_batch_);
+}
+
+void HealthCheckClient::CallState::StartBatchInCallCombiner(
+    void* arg, grpc_error* /*error*/) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  SubchannelCall* call =
+      static_cast<SubchannelCall*>(batch->handler_private.extra_arg);
+  call->StartTransportStreamOpBatch(batch);
+}
+
+void HealthCheckClient::CallState::StartBatch(
+    grpc_transport_stream_op_batch* batch) {
+  batch->handler_private.extra_arg = call_;
+  GRPC_CLOSURE_INIT(&batch->handler_private.closure, StartBatchInCallCombiner,
+                    batch, grpc_schedule_on_exec_ctx);
+  GRPC_CALL_COMBINER_START(&call_combiner_, &batch->handler_private.closure,
+                           GRPC_ERROR_NONE, "start_subchannel_batch");
+}
+
+void HealthCheckClient::CallState::AfterCallStackDestruction(
+    void* arg, grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  delete self;
+}
+
+void HealthCheckClient::CallState::OnCancelComplete(void* arg,
+                                                    grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  GRPC_CALL_COMBINER_STOP(&self->call_combiner_, "health_cancel");
+  self->call_->Unref(DEBUG_LOCATION, "cancel");
+}
+
+void HealthCheckClient::CallState::StartCancel(void* arg,
+                                               grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  auto* batch = grpc_make_transport_stream_op(
+      GRPC_CLOSURE_CREATE(OnCancelComplete, self, grpc_schedule_on_exec_ctx));
+  batch->cancel_stream = true;
+  batch->payload->cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
+  self->call_->StartTransportStreamOpBatch(batch);
+}
+
+void HealthCheckClient::CallState::Cancel() {
+  bool expected = false;
+  if (cancelled_.CompareExchangeStrong(&expected, true, MemoryOrder::ACQ_REL,
+                                       MemoryOrder::ACQUIRE)) {
+    call_->Ref(DEBUG_LOCATION, "cancel").release();
+    GRPC_CALL_COMBINER_START(
+        &call_combiner_,
+        GRPC_CLOSURE_CREATE(StartCancel, this, grpc_schedule_on_exec_ctx),
+        GRPC_ERROR_NONE, "health_cancel");
+  }
+}
+
+void HealthCheckClient::CallState::OnComplete(void* arg,
+                                              grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  GRPC_CALL_COMBINER_STOP(&self->call_combiner_, "on_complete");
+  grpc_metadata_batch_destroy(&self->send_initial_metadata_);
+  grpc_metadata_batch_destroy(&self->send_trailing_metadata_);
+  self->call_->Unref(DEBUG_LOCATION, "on_complete");
+}
+
+void HealthCheckClient::CallState::RecvInitialMetadataReady(
+    void* arg, grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  GRPC_CALL_COMBINER_STOP(&self->call_combiner_, "recv_initial_metadata_ready");
+  grpc_metadata_batch_destroy(&self->recv_initial_metadata_);
+  self->call_->Unref(DEBUG_LOCATION, "recv_initial_metadata_ready");
+}
+
+void HealthCheckClient::CallState::DoneReadingRecvMessage(grpc_error* error) {
+  recv_message_.reset();
+  if (error != GRPC_ERROR_NONE) {
+    GRPC_ERROR_UNREF(error);
+    Cancel();
+    grpc_slice_buffer_destroy_internal(&recv_message_buffer_);
+    call_->Unref(DEBUG_LOCATION, "recv_message_ready");
+    return;
+  }
+  const bool healthy = DecodeResponse(&recv_message_buffer_, &error);
+  const grpc_connectivity_state state =
+      healthy ? GRPC_CHANNEL_READY : GRPC_CHANNEL_TRANSIENT_FAILURE;
+  const char* reason = error == GRPC_ERROR_NONE && !healthy
+                           ? "backend unhealthy"
+                           : grpc_error_string(error);
+  health_check_client_->SetHealthStatus(state, reason);
+  seen_response_.Store(true, MemoryOrder::RELEASE);
+  grpc_slice_buffer_destroy_internal(&recv_message_buffer_);
+  // Start another recv_message batch.
+  // This re-uses the ref we're holding.
+  // Note: Can't just reuse batch_ here, since we don't know that all
+  // callbacks from the original batch have completed yet.
+  recv_message_batch_.payload = &payload_;
+  payload_.recv_message.recv_message = &recv_message_;
+  payload_.recv_message.recv_message_ready = GRPC_CLOSURE_INIT(
+      &recv_message_ready_, RecvMessageReady, this, grpc_schedule_on_exec_ctx);
+  recv_message_batch_.recv_message = true;
+  StartBatch(&recv_message_batch_);
+}
+
+grpc_error* HealthCheckClient::CallState::PullSliceFromRecvMessage() {
+  grpc_slice slice;
+  grpc_error* error = recv_message_->Pull(&slice);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_slice_buffer_add(&recv_message_buffer_, slice);
+  }
+  return error;
+}
+
+void HealthCheckClient::CallState::ContinueReadingRecvMessage() {
+  while (recv_message_->Next(SIZE_MAX, &recv_message_ready_)) {
+    grpc_error* error = PullSliceFromRecvMessage();
+    if (error != GRPC_ERROR_NONE) {
+      DoneReadingRecvMessage(error);
+      return;
+    }
+    if (recv_message_buffer_.length == recv_message_->length()) {
+      DoneReadingRecvMessage(GRPC_ERROR_NONE);
+      break;
+    }
+  }
+}
+
+void HealthCheckClient::CallState::OnByteStreamNext(void* arg,
+                                                    grpc_error* error) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    self->DoneReadingRecvMessage(GRPC_ERROR_REF(error));
+    return;
+  }
+  error = self->PullSliceFromRecvMessage();
+  if (error != GRPC_ERROR_NONE) {
+    self->DoneReadingRecvMessage(error);
+    return;
+  }
+  if (self->recv_message_buffer_.length == self->recv_message_->length()) {
+    self->DoneReadingRecvMessage(GRPC_ERROR_NONE);
+  } else {
+    self->ContinueReadingRecvMessage();
+  }
+}
+
+void HealthCheckClient::CallState::RecvMessageReady(void* arg,
+                                                    grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  GRPC_CALL_COMBINER_STOP(&self->call_combiner_, "recv_message_ready");
+  if (self->recv_message_ == nullptr) {
+    self->call_->Unref(DEBUG_LOCATION, "recv_message_ready");
+    return;
+  }
+  grpc_slice_buffer_init(&self->recv_message_buffer_);
+  GRPC_CLOSURE_INIT(&self->recv_message_ready_, OnByteStreamNext, self,
+                    grpc_schedule_on_exec_ctx);
+  self->ContinueReadingRecvMessage();
+  // Ref will continue to be held until we finish draining the byte stream.
+}
+
+void HealthCheckClient::CallState::RecvTrailingMetadataReady(
+    void* arg, grpc_error* error) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  GRPC_CALL_COMBINER_STOP(&self->call_combiner_,
+                          "recv_trailing_metadata_ready");
+  // Get call status.
+  grpc_status_code status = GRPC_STATUS_UNKNOWN;
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error_get_status(error, GRPC_MILLIS_INF_FUTURE, &status,
+                          nullptr /* slice */, nullptr /* http_error */,
+                          nullptr /* error_string */);
+  } else if (self->recv_trailing_metadata_.idx.named.grpc_status != nullptr) {
+    status = grpc_get_status_code_from_metadata(
+        self->recv_trailing_metadata_.idx.named.grpc_status->md);
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)) {
+    gpr_log(GPR_INFO,
+            "HealthCheckClient %p CallState %p: health watch failed with "
+            "status %d",
+            self->health_check_client_.get(), self, status);
+  }
+  // Clean up.
+  grpc_metadata_batch_destroy(&self->recv_trailing_metadata_);
+  // For status UNIMPLEMENTED, give up and assume always healthy.
+  bool retry = true;
+  if (status == GRPC_STATUS_UNIMPLEMENTED) {
+    static const char kErrorMessage[] =
+        "health checking Watch method returned UNIMPLEMENTED; "
+        "disabling health checks but assuming server is healthy";
+    gpr_log(GPR_ERROR, kErrorMessage);
+    if (self->health_check_client_->channelz_node_ != nullptr) {
+      self->health_check_client_->channelz_node_->AddTraceEvent(
+          channelz::ChannelTrace::Error,
+          grpc_slice_from_static_string(kErrorMessage));
+    }
+    self->health_check_client_->SetHealthStatus(GRPC_CHANNEL_READY,
+                                                kErrorMessage);
+    retry = false;
+  }
+  self->CallEnded(retry);
+}
+
+void HealthCheckClient::CallState::CallEndedRetry(void* arg,
+                                                  grpc_error* /*error*/) {
+  HealthCheckClient::CallState* self =
+      static_cast<HealthCheckClient::CallState*>(arg);
+  self->CallEnded(true /* retry */);
+  self->call_->Unref(DEBUG_LOCATION, "call_end_closure");
+}
+
+void HealthCheckClient::CallState::CallEnded(bool retry) {
+  // If this CallState is still in use, this call ended because of a failure,
+  // so we need to stop using it and optionally create a new one.
+  // Otherwise, we have deliberately ended this call, and no further action
+  // is required.
+  if (this == health_check_client_->call_state_.get()) {
+    health_check_client_->call_state_.reset();
+    if (retry) {
+      GPR_ASSERT(!health_check_client_->shutting_down_);
+      if (seen_response_.Load(MemoryOrder::ACQUIRE)) {
+        // If the call fails after we've gotten a successful response, reset
+        // the backoff and restart the call immediately.
+        health_check_client_->retry_backoff_.Reset();
+        health_check_client_->StartCall();
+      } else {
+        // If the call failed without receiving any messages, retry later.
+        health_check_client_->StartRetryTimer();
+      }
+    }
+  }
+  // When the last ref to the call stack goes away, the CallState object
+  // will be automatically destroyed.
+  call_->Unref(DEBUG_LOCATION, "call_ended");
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.h
new file mode 100644
index 0000000..f8b9ade
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/health/health_check_client.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/transport.h"
+
+namespace grpc_core {
+
+class HealthCheckClient : public InternallyRefCounted<HealthCheckClient> {
+ public:
+  HealthCheckClient(const char* service_name,
+                    RefCountedPtr<ConnectedSubchannel> connected_subchannel,
+                    grpc_pollset_set* interested_parties,
+                    RefCountedPtr<channelz::SubchannelNode> channelz_node,
+                    RefCountedPtr<ConnectivityStateWatcherInterface> watcher);
+
+  ~HealthCheckClient();
+
+  void Orphan() override;
+
+ private:
+  // Contains a call to the backend and all the data related to the call.
+  class CallState : public Orphanable {
+   public:
+    CallState(RefCountedPtr<HealthCheckClient> health_check_client,
+              grpc_pollset_set* interested_parties_);
+    ~CallState();
+
+    void Orphan() override;
+
+    void StartCall();
+
+   private:
+    void Cancel();
+
+    void StartBatch(grpc_transport_stream_op_batch* batch);
+    static void StartBatchInCallCombiner(void* arg, grpc_error* error);
+
+    static void CallEndedRetry(void* arg, grpc_error* error);
+    void CallEnded(bool retry);
+
+    static void OnComplete(void* arg, grpc_error* error);
+    static void RecvInitialMetadataReady(void* arg, grpc_error* error);
+    static void RecvMessageReady(void* arg, grpc_error* error);
+    static void RecvTrailingMetadataReady(void* arg, grpc_error* error);
+    static void StartCancel(void* arg, grpc_error* error);
+    static void OnCancelComplete(void* arg, grpc_error* error);
+
+    static void OnByteStreamNext(void* arg, grpc_error* error);
+    void ContinueReadingRecvMessage();
+    grpc_error* PullSliceFromRecvMessage();
+    void DoneReadingRecvMessage(grpc_error* error);
+
+    static void AfterCallStackDestruction(void* arg, grpc_error* error);
+
+    RefCountedPtr<HealthCheckClient> health_check_client_;
+    grpc_polling_entity pollent_;
+
+    Arena* arena_;
+    grpc_core::CallCombiner call_combiner_;
+    grpc_call_context_element context_[GRPC_CONTEXT_COUNT] = {};
+
+    // The streaming call to the backend. Always non-null.
+    // Refs are tracked manually; when the last ref is released, the
+    // CallState object will be automatically destroyed.
+    SubchannelCall* call_;
+
+    grpc_transport_stream_op_batch_payload payload_;
+    grpc_transport_stream_op_batch batch_;
+    grpc_transport_stream_op_batch recv_message_batch_;
+    grpc_transport_stream_op_batch recv_trailing_metadata_batch_;
+
+    grpc_closure on_complete_;
+
+    // send_initial_metadata
+    grpc_metadata_batch send_initial_metadata_;
+    grpc_linked_mdelem path_metadata_storage_;
+
+    // send_message
+    ManualConstructor<SliceBufferByteStream> send_message_;
+
+    // send_trailing_metadata
+    grpc_metadata_batch send_trailing_metadata_;
+
+    // recv_initial_metadata
+    grpc_metadata_batch recv_initial_metadata_;
+    grpc_closure recv_initial_metadata_ready_;
+
+    // recv_message
+    OrphanablePtr<ByteStream> recv_message_;
+    grpc_closure recv_message_ready_;
+    grpc_slice_buffer recv_message_buffer_;
+    Atomic<bool> seen_response_{false};
+
+    // recv_trailing_metadata
+    grpc_metadata_batch recv_trailing_metadata_;
+    grpc_transport_stream_stats collect_stats_;
+    grpc_closure recv_trailing_metadata_ready_;
+
+    // True if the cancel_stream batch has been started.
+    Atomic<bool> cancelled_{false};
+
+    // Closure for call stack destruction.
+    grpc_closure after_call_stack_destruction_;
+  };
+
+  void StartCall();
+  void StartCallLocked();  // Requires holding mu_.
+
+  void StartRetryTimer();
+  static void OnRetryTimer(void* arg, grpc_error* error);
+
+  void SetHealthStatus(grpc_connectivity_state state, const char* reason);
+  void SetHealthStatusLocked(grpc_connectivity_state state,
+                             const char* reason);  // Requires holding mu_.
+
+  const char* service_name_;  // Do not own.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  grpc_pollset_set* interested_parties_;  // Do not own.
+  RefCountedPtr<channelz::SubchannelNode> channelz_node_;
+
+  Mutex mu_;
+  RefCountedPtr<ConnectivityStateWatcherInterface> watcher_;
+  bool shutting_down_ = false;
+
+  // The data associated with the current health check call.  It holds a ref
+  // to this HealthCheckClient object.
+  OrphanablePtr<CallState> call_state_;
+
+  // Call retry state.
+  BackOff retry_backoff_;
+  grpc_timer retry_timer_;
+  grpc_closure retry_timer_callback_;
+  bool retry_timer_callback_pending_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HEALTH_HEALTH_CHECK_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.cc
new file mode 100644
index 0000000..6e8c84e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.cc	
@@ -0,0 +1,389 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/http/format_request.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+
+namespace {
+
+class HttpConnectHandshaker : public Handshaker {
+ public:
+  HttpConnectHandshaker();
+  void Shutdown(grpc_error* why) override;
+  void DoHandshake(grpc_tcp_server_acceptor* acceptor,
+                   grpc_closure* on_handshake_done,
+                   HandshakerArgs* args) override;
+  const char* name() const override { return "http_connect"; }
+
+ private:
+  virtual ~HttpConnectHandshaker();
+  void CleanupArgsForFailureLocked();
+  void HandshakeFailedLocked(grpc_error* error);
+  static void OnWriteDone(void* arg, grpc_error* error);
+  static void OnReadDone(void* arg, grpc_error* error);
+  static void OnWriteDoneScheduler(void* arg, grpc_error* error);
+  static void OnReadDoneScheduler(void* arg, grpc_error* error);
+
+  Mutex mu_;
+
+  bool is_shutdown_ = false;
+  // Endpoint and read buffer to destroy after a shutdown.
+  grpc_endpoint* endpoint_to_destroy_ = nullptr;
+  grpc_slice_buffer* read_buffer_to_destroy_ = nullptr;
+
+  // State saved while performing the handshake.
+  HandshakerArgs* args_ = nullptr;
+  grpc_closure* on_handshake_done_ = nullptr;
+
+  // Objects for processing the HTTP CONNECT request and response.
+  grpc_slice_buffer write_buffer_;
+  grpc_closure request_done_closure_;
+  grpc_closure response_read_closure_;
+  grpc_http_parser http_parser_;
+  grpc_http_response http_response_;
+};
+
+HttpConnectHandshaker::~HttpConnectHandshaker() {
+  if (endpoint_to_destroy_ != nullptr) {
+    grpc_endpoint_destroy(endpoint_to_destroy_);
+  }
+  if (read_buffer_to_destroy_ != nullptr) {
+    grpc_slice_buffer_destroy_internal(read_buffer_to_destroy_);
+    gpr_free(read_buffer_to_destroy_);
+  }
+  grpc_slice_buffer_destroy_internal(&write_buffer_);
+  grpc_http_parser_destroy(&http_parser_);
+  grpc_http_response_destroy(&http_response_);
+}
+
+// Set args fields to nullptr, saving the endpoint and read buffer for
+// later destruction.
+void HttpConnectHandshaker::CleanupArgsForFailureLocked() {
+  endpoint_to_destroy_ = args_->endpoint;
+  args_->endpoint = nullptr;
+  read_buffer_to_destroy_ = args_->read_buffer;
+  args_->read_buffer = nullptr;
+  grpc_channel_args_destroy(args_->args);
+  args_->args = nullptr;
+}
+
+// If the handshake failed or we're shutting down, clean up and invoke the
+// callback with the error.
+void HttpConnectHandshaker::HandshakeFailedLocked(grpc_error* error) {
+  if (error == GRPC_ERROR_NONE) {
+    // If we were shut down after an endpoint operation succeeded but
+    // before the endpoint callback was invoked, we need to generate our
+    // own error.
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshaker shutdown");
+  }
+  if (!is_shutdown_) {
+    // TODO(ctiller): It is currently necessary to shutdown endpoints
+    // before destroying them, even if we know that there are no
+    // pending read/write callbacks.  This should be fixed, at which
+    // point this can be removed.
+    grpc_endpoint_shutdown(args_->endpoint, GRPC_ERROR_REF(error));
+    // Not shutting down, so the handshake failed.  Clean up before
+    // invoking the callback.
+    CleanupArgsForFailureLocked();
+    // Set shutdown to true so that subsequent calls to
+    // http_connect_handshaker_shutdown() do nothing.
+    is_shutdown_ = true;
+  }
+  // Invoke callback.
+  ExecCtx::Run(DEBUG_LOCATION, on_handshake_done_, error);
+}
+
+// This callback can be invoked inline while already holding onto the mutex. To
+// avoid deadlocks, schedule OnWriteDone on ExecCtx.
+void HttpConnectHandshaker::OnWriteDoneScheduler(void* arg, grpc_error* error) {
+  auto* handshaker = static_cast<HttpConnectHandshaker*>(arg);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      GRPC_CLOSURE_INIT(&handshaker->request_done_closure_,
+                        &HttpConnectHandshaker::OnWriteDone, handshaker,
+                        grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_REF(error));
+}
+
+// Callback invoked when finished writing HTTP CONNECT request.
+void HttpConnectHandshaker::OnWriteDone(void* arg, grpc_error* error) {
+  auto* handshaker = static_cast<HttpConnectHandshaker*>(arg);
+  ReleasableMutexLock lock(&handshaker->mu_);
+  if (error != GRPC_ERROR_NONE || handshaker->is_shutdown_) {
+    // If the write failed or we're shutting down, clean up and invoke the
+    // callback with the error.
+    handshaker->HandshakeFailedLocked(GRPC_ERROR_REF(error));
+    lock.Unlock();
+    handshaker->Unref();
+  } else {
+    // Otherwise, read the response.
+    // The read callback inherits our ref to the handshaker.
+    grpc_endpoint_read(
+        handshaker->args_->endpoint, handshaker->args_->read_buffer,
+        GRPC_CLOSURE_INIT(&handshaker->response_read_closure_,
+                          &HttpConnectHandshaker::OnReadDoneScheduler,
+                          handshaker, grpc_schedule_on_exec_ctx),
+        /*urgent=*/true);
+  }
+}
+
+// This callback can be invoked inline while already holding onto the mutex. To
+// avoid deadlocks, schedule OnReadDone on ExecCtx.
+void HttpConnectHandshaker::OnReadDoneScheduler(void* arg, grpc_error* error) {
+  auto* handshaker = static_cast<HttpConnectHandshaker*>(arg);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      GRPC_CLOSURE_INIT(&handshaker->response_read_closure_,
+                        &HttpConnectHandshaker::OnReadDone, handshaker,
+                        grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_REF(error));
+}
+
+// Callback invoked for reading HTTP CONNECT response.
+void HttpConnectHandshaker::OnReadDone(void* arg, grpc_error* error) {
+  auto* handshaker = static_cast<HttpConnectHandshaker*>(arg);
+  ReleasableMutexLock lock(&handshaker->mu_);
+  if (error != GRPC_ERROR_NONE || handshaker->is_shutdown_) {
+    // If the read failed or we're shutting down, clean up and invoke the
+    // callback with the error.
+    handshaker->HandshakeFailedLocked(GRPC_ERROR_REF(error));
+    goto done;
+  }
+  // Add buffer to parser.
+  for (size_t i = 0; i < handshaker->args_->read_buffer->count; ++i) {
+    if (GRPC_SLICE_LENGTH(handshaker->args_->read_buffer->slices[i]) > 0) {
+      size_t body_start_offset = 0;
+      error = grpc_http_parser_parse(&handshaker->http_parser_,
+                                     handshaker->args_->read_buffer->slices[i],
+                                     &body_start_offset);
+      if (error != GRPC_ERROR_NONE) {
+        handshaker->HandshakeFailedLocked(error);
+        goto done;
+      }
+      if (handshaker->http_parser_.state == GRPC_HTTP_BODY) {
+        // Remove the data we've already read from the read buffer,
+        // leaving only the leftover bytes (if any).
+        grpc_slice_buffer tmp_buffer;
+        grpc_slice_buffer_init(&tmp_buffer);
+        if (body_start_offset <
+            GRPC_SLICE_LENGTH(handshaker->args_->read_buffer->slices[i])) {
+          grpc_slice_buffer_add(
+              &tmp_buffer,
+              grpc_slice_split_tail(&handshaker->args_->read_buffer->slices[i],
+                                    body_start_offset));
+        }
+        grpc_slice_buffer_addn(&tmp_buffer,
+                               &handshaker->args_->read_buffer->slices[i + 1],
+                               handshaker->args_->read_buffer->count - i - 1);
+        grpc_slice_buffer_swap(handshaker->args_->read_buffer, &tmp_buffer);
+        grpc_slice_buffer_destroy_internal(&tmp_buffer);
+        break;
+      }
+    }
+  }
+  // If we're not done reading the response, read more data.
+  // TODO(roth): In practice, I suspect that the response to a CONNECT
+  // request will never include a body, in which case this check is
+  // sufficient.  However, the language of RFC-2817 doesn't explicitly
+  // forbid the response from including a body.  If there is a body,
+  // it's possible that we might have parsed part but not all of the
+  // body, in which case this check will cause us to fail to parse the
+  // remainder of the body.  If that ever becomes an issue, we may
+  // need to fix the HTTP parser to understand when the body is
+  // complete (e.g., handling chunked transfer encoding or looking
+  // at the Content-Length: header).
+  if (handshaker->http_parser_.state != GRPC_HTTP_BODY) {
+    grpc_slice_buffer_reset_and_unref_internal(handshaker->args_->read_buffer);
+    grpc_endpoint_read(
+        handshaker->args_->endpoint, handshaker->args_->read_buffer,
+        GRPC_CLOSURE_INIT(&handshaker->response_read_closure_,
+                          &HttpConnectHandshaker::OnReadDoneScheduler,
+                          handshaker, grpc_schedule_on_exec_ctx),
+        /*urgent=*/true);
+    return;
+  }
+  // Make sure we got a 2xx response.
+  if (handshaker->http_response_.status < 200 ||
+      handshaker->http_response_.status >= 300) {
+    char* msg;
+    gpr_asprintf(&msg, "HTTP proxy returned response code %d",
+                 handshaker->http_response_.status);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    handshaker->HandshakeFailedLocked(error);
+    goto done;
+  }
+  // Success.  Invoke handshake-done callback.
+  ExecCtx::Run(DEBUG_LOCATION, handshaker->on_handshake_done_, error);
+done:
+  // Set shutdown to true so that subsequent calls to
+  // http_connect_handshaker_shutdown() do nothing.
+  handshaker->is_shutdown_ = true;
+  lock.Unlock();
+  handshaker->Unref();
+}
+
+//
+// Public handshaker methods
+//
+
+void HttpConnectHandshaker::Shutdown(grpc_error* why) {
+  {
+    MutexLock lock(&mu_);
+    if (!is_shutdown_) {
+      is_shutdown_ = true;
+      grpc_endpoint_shutdown(args_->endpoint, GRPC_ERROR_REF(why));
+      CleanupArgsForFailureLocked();
+    }
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+void HttpConnectHandshaker::DoHandshake(grpc_tcp_server_acceptor* /*acceptor*/,
+                                        grpc_closure* on_handshake_done,
+                                        HandshakerArgs* args) {
+  // Check for HTTP CONNECT channel arg.
+  // If not found, invoke on_handshake_done without doing anything.
+  const grpc_arg* arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_HTTP_CONNECT_SERVER);
+  char* server_name = grpc_channel_arg_get_string(arg);
+  if (server_name == nullptr) {
+    // Set shutdown to true so that subsequent calls to
+    // http_connect_handshaker_shutdown() do nothing.
+    {
+      MutexLock lock(&mu_);
+      is_shutdown_ = true;
+    }
+    ExecCtx::Run(DEBUG_LOCATION, on_handshake_done, GRPC_ERROR_NONE);
+    return;
+  }
+  // Get headers from channel args.
+  arg = grpc_channel_args_find(args->args, GRPC_ARG_HTTP_CONNECT_HEADERS);
+  char* arg_header_string = grpc_channel_arg_get_string(arg);
+  grpc_http_header* headers = nullptr;
+  size_t num_headers = 0;
+  char** header_strings = nullptr;
+  size_t num_header_strings = 0;
+  if (arg_header_string != nullptr) {
+    gpr_string_split(arg_header_string, "\n", &header_strings,
+                     &num_header_strings);
+    headers = static_cast<grpc_http_header*>(
+        gpr_malloc(sizeof(grpc_http_header) * num_header_strings));
+    for (size_t i = 0; i < num_header_strings; ++i) {
+      char* sep = strchr(header_strings[i], ':');
+
+      if (sep == nullptr) {
+        gpr_log(GPR_ERROR, "skipping unparseable HTTP CONNECT header: %s",
+                header_strings[i]);
+        continue;
+      }
+      *sep = '\0';
+      headers[num_headers].key = header_strings[i];
+      headers[num_headers].value = sep + 1;
+      ++num_headers;
+    }
+  }
+  // Save state in the handshaker object.
+  MutexLock lock(&mu_);
+  args_ = args;
+  on_handshake_done_ = on_handshake_done;
+  // Log connection via proxy.
+  char* proxy_name = grpc_endpoint_get_peer(args->endpoint);
+  gpr_log(GPR_INFO, "Connecting to server %s via HTTP proxy %s", server_name,
+          proxy_name);
+  gpr_free(proxy_name);
+  // Construct HTTP CONNECT request.
+  grpc_httpcli_request request;
+  request.host = server_name;
+  request.ssl_host_override = nullptr;
+  request.http.method = (char*)"CONNECT";
+  request.http.path = server_name;
+  request.http.version = GRPC_HTTP_HTTP10;  // Set by OnReadDone
+  request.http.hdrs = headers;
+  request.http.hdr_count = num_headers;
+  request.http.body_length = 0;
+  request.http.body = nullptr;
+  request.handshaker = &grpc_httpcli_plaintext;
+  grpc_slice request_slice = grpc_httpcli_format_connect_request(&request);
+  grpc_slice_buffer_add(&write_buffer_, request_slice);
+  // Clean up.
+  gpr_free(headers);
+  for (size_t i = 0; i < num_header_strings; ++i) {
+    gpr_free(header_strings[i]);
+  }
+  gpr_free(header_strings);
+  // Take a new ref to be held by the write callback.
+  Ref().release();
+  grpc_endpoint_write(
+      args->endpoint, &write_buffer_,
+      GRPC_CLOSURE_INIT(&request_done_closure_,
+                        &HttpConnectHandshaker::OnWriteDoneScheduler, this,
+                        grpc_schedule_on_exec_ctx),
+      nullptr);
+}
+
+HttpConnectHandshaker::HttpConnectHandshaker() {
+  grpc_slice_buffer_init(&write_buffer_);
+  grpc_http_parser_init(&http_parser_, GRPC_HTTP_RESPONSE, &http_response_);
+}
+
+//
+// handshaker factory
+//
+
+class HttpConnectHandshakerFactory : public HandshakerFactory {
+ public:
+  void AddHandshakers(const grpc_channel_args* /*args*/,
+                      grpc_pollset_set* /*interested_parties*/,
+                      HandshakeManager* handshake_mgr) override {
+    handshake_mgr->Add(MakeRefCounted<HttpConnectHandshaker>());
+  }
+  ~HttpConnectHandshakerFactory() override = default;
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_http_connect_register_handshaker_factory() {
+  using namespace grpc_core;
+  HandshakerRegistry::RegisterHandshakerFactory(
+      true /* at_start */, HANDSHAKER_CLIENT,
+      absl::make_unique<HttpConnectHandshakerFactory>());
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.h
new file mode 100644
index 0000000..26c31f2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_connect_handshaker.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
+
+/// Channel arg indicating the server in HTTP CONNECT request (string).
+/// The presence of this arg triggers the use of HTTP CONNECT.
+#define GRPC_ARG_HTTP_CONNECT_SERVER "grpc.http_connect_server"
+
+/// Channel arg indicating HTTP CONNECT headers (string).
+/// Multiple headers are separated by newlines.  Key/value pairs are
+/// separated by colons.
+#define GRPC_ARG_HTTP_CONNECT_HEADERS "grpc.http_connect_headers"
+
+/// Registers handshaker factory.
+void grpc_http_connect_register_handshaker_factory();
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.cc
new file mode 100644
index 0000000..efd188c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.cc	
@@ -0,0 +1,209 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/http_proxy.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/slice/b64.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+namespace {
+
+/**
+ * Parses the 'https_proxy' env var (fallback on 'http_proxy') and returns the
+ * proxy hostname to resolve or nullptr on error. Also sets 'user_cred' to user
+ * credentials if present in the 'http_proxy' env var, otherwise leaves it
+ * unchanged. It is caller's responsibility to gpr_free user_cred.
+ */
+char* GetHttpProxyServer(char** user_cred) {
+  GPR_ASSERT(user_cred != nullptr);
+  grpc_uri* uri = nullptr;
+  char* proxy_name = nullptr;
+  char** authority_strs = nullptr;
+  size_t authority_nstrs;
+  /* Prefer using 'grpc_proxy'. Fallback on 'http_proxy' if it is not set.
+   * Also prefer using 'https_proxy' with fallback on 'http_proxy'. The
+   * fallback behavior can be removed if there's a demand for it.
+   */
+  char* uri_str = gpr_getenv("grpc_proxy");
+  if (uri_str == nullptr) uri_str = gpr_getenv("https_proxy");
+  if (uri_str == nullptr) uri_str = gpr_getenv("http_proxy");
+  if (uri_str == nullptr) return nullptr;
+  // an emtpy value means "don't use proxy"
+  if (uri_str[0] == '\0') goto done;
+  uri = grpc_uri_parse(uri_str, false /* suppress_errors */);
+  if (uri == nullptr || uri->authority == nullptr) {
+    gpr_log(GPR_ERROR, "cannot parse value of 'http_proxy' env var");
+    goto done;
+  }
+  if (strcmp(uri->scheme, "http") != 0) {
+    gpr_log(GPR_ERROR, "'%s' scheme not supported in proxy URI", uri->scheme);
+    goto done;
+  }
+  /* Split on '@' to separate user credentials from host */
+  gpr_string_split(uri->authority, "@", &authority_strs, &authority_nstrs);
+  GPR_ASSERT(authority_nstrs != 0); /* should have at least 1 string */
+  if (authority_nstrs == 1) {
+    /* User cred not present in authority */
+    proxy_name = authority_strs[0];
+  } else if (authority_nstrs == 2) {
+    /* User cred found */
+    *user_cred = authority_strs[0];
+    proxy_name = authority_strs[1];
+    gpr_log(GPR_DEBUG, "userinfo found in proxy URI");
+  } else {
+    /* Bad authority */
+    for (size_t i = 0; i < authority_nstrs; i++) {
+      gpr_free(authority_strs[i]);
+    }
+    proxy_name = nullptr;
+  }
+  gpr_free(authority_strs);
+done:
+  gpr_free(uri_str);
+  grpc_uri_destroy(uri);
+  return proxy_name;
+}
+
+class HttpProxyMapper : public ProxyMapperInterface {
+ public:
+  bool MapName(const char* server_uri, const grpc_channel_args* args,
+               char** name_to_resolve, grpc_channel_args** new_args) override {
+    if (!grpc_channel_args_find_bool(args, GRPC_ARG_ENABLE_HTTP_PROXY, true)) {
+      return false;
+    }
+    char* user_cred = nullptr;
+    *name_to_resolve = GetHttpProxyServer(&user_cred);
+    if (*name_to_resolve == nullptr) return false;
+    char* no_proxy_str = nullptr;
+    grpc_uri* uri = grpc_uri_parse(server_uri, false /* suppress_errors */);
+    if (uri == nullptr || uri->path[0] == '\0') {
+      gpr_log(GPR_ERROR,
+              "'http_proxy' environment variable set, but cannot "
+              "parse server URI '%s' -- not using proxy",
+              server_uri);
+      goto no_use_proxy;
+    }
+    if (strcmp(uri->scheme, "unix") == 0) {
+      gpr_log(GPR_INFO, "not using proxy for Unix domain socket '%s'",
+              server_uri);
+      goto no_use_proxy;
+    }
+    /* Prefer using 'no_grpc_proxy'. Fallback on 'no_proxy' if it is not set. */
+    no_proxy_str = gpr_getenv("no_grpc_proxy");
+    if (no_proxy_str == nullptr) no_proxy_str = gpr_getenv("no_proxy");
+    if (no_proxy_str != nullptr) {
+      static const char* NO_PROXY_SEPARATOR = ",";
+      bool use_proxy = true;
+      grpc_core::UniquePtr<char> server_host;
+      grpc_core::UniquePtr<char> server_port;
+      if (!grpc_core::SplitHostPort(
+              uri->path[0] == '/' ? uri->path + 1 : uri->path, &server_host,
+              &server_port)) {
+        gpr_log(GPR_INFO,
+                "unable to split host and port, not checking no_proxy list for "
+                "host '%s'",
+                server_uri);
+        gpr_free(no_proxy_str);
+      } else {
+        size_t uri_len = strlen(server_host.get());
+        char** no_proxy_hosts;
+        size_t num_no_proxy_hosts;
+        gpr_string_split(no_proxy_str, NO_PROXY_SEPARATOR, &no_proxy_hosts,
+                         &num_no_proxy_hosts);
+        for (size_t i = 0; i < num_no_proxy_hosts; i++) {
+          char* no_proxy_entry = no_proxy_hosts[i];
+          size_t no_proxy_len = strlen(no_proxy_entry);
+          if (no_proxy_len <= uri_len &&
+              gpr_stricmp(no_proxy_entry,
+                          &(server_host.get()[uri_len - no_proxy_len])) == 0) {
+            gpr_log(GPR_INFO, "not using proxy for host in no_proxy list '%s'",
+                    server_uri);
+            use_proxy = false;
+            break;
+          }
+        }
+        for (size_t i = 0; i < num_no_proxy_hosts; i++) {
+          gpr_free(no_proxy_hosts[i]);
+        }
+        gpr_free(no_proxy_hosts);
+        gpr_free(no_proxy_str);
+        if (!use_proxy) goto no_use_proxy;
+      }
+    }
+    grpc_arg args_to_add[2];
+    args_to_add[0] = grpc_channel_arg_string_create(
+        (char*)GRPC_ARG_HTTP_CONNECT_SERVER,
+        uri->path[0] == '/' ? uri->path + 1 : uri->path);
+    if (user_cred != nullptr) {
+      /* Use base64 encoding for user credentials as stated in RFC 7617 */
+      char* encoded_user_cred =
+          grpc_base64_encode(user_cred, strlen(user_cred), 0, 0);
+      char* header;
+      gpr_asprintf(&header, "Proxy-Authorization:Basic %s", encoded_user_cred);
+      gpr_free(encoded_user_cred);
+      args_to_add[1] = grpc_channel_arg_string_create(
+          (char*)GRPC_ARG_HTTP_CONNECT_HEADERS, header);
+      *new_args = grpc_channel_args_copy_and_add(args, args_to_add, 2);
+      gpr_free(header);
+    } else {
+      *new_args = grpc_channel_args_copy_and_add(args, args_to_add, 1);
+    }
+    grpc_uri_destroy(uri);
+    gpr_free(user_cred);
+    return true;
+  no_use_proxy:
+    if (uri != nullptr) grpc_uri_destroy(uri);
+    gpr_free(*name_to_resolve);
+    *name_to_resolve = nullptr;
+    gpr_free(user_cred);
+    return false;
+  }
+
+  bool MapAddress(const grpc_resolved_address& /*address*/,
+                  const grpc_channel_args* /*args*/,
+                  grpc_resolved_address** /*new_address*/,
+                  grpc_channel_args** /*new_args*/) override {
+    return false;
+  }
+};
+
+}  // namespace
+
+void RegisterHttpProxyMapper() {
+  ProxyMapperRegistry::Register(
+      true /* at_start */,
+      std::unique_ptr<ProxyMapperInterface>(new HttpProxyMapper()));
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.h
new file mode 100644
index 0000000..cecdaf8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/http_proxy.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H
+
+namespace grpc_core {
+
+void RegisterHttpProxyMapper();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_HTTP_PROXY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.cc
new file mode 100644
index 0000000..a7848d7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.cc	
@@ -0,0 +1,137 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+namespace grpc_core {
+
+DebugOnlyTraceFlag grpc_trace_lb_policy_refcount(false, "lb_policy_refcount");
+
+//
+// LoadBalancingPolicy
+//
+
+LoadBalancingPolicy::LoadBalancingPolicy(Args args, intptr_t initial_refcount)
+    : InternallyRefCounted(&grpc_trace_lb_policy_refcount, initial_refcount),
+      combiner_(GRPC_COMBINER_REF(args.combiner, "lb_policy")),
+      interested_parties_(grpc_pollset_set_create()),
+      channel_control_helper_(std::move(args.channel_control_helper)) {}
+
+LoadBalancingPolicy::~LoadBalancingPolicy() {
+  grpc_pollset_set_destroy(interested_parties_);
+  GRPC_COMBINER_UNREF(combiner_, "lb_policy");
+}
+
+void LoadBalancingPolicy::Orphan() {
+  ShutdownLocked();
+  Unref(DEBUG_LOCATION, "Orphan");
+}
+
+//
+// LoadBalancingPolicy::UpdateArgs
+//
+
+LoadBalancingPolicy::UpdateArgs::UpdateArgs(const UpdateArgs& other) {
+  addresses = other.addresses;
+  config = other.config;
+  args = grpc_channel_args_copy(other.args);
+}
+
+LoadBalancingPolicy::UpdateArgs::UpdateArgs(UpdateArgs&& other) {
+  addresses = std::move(other.addresses);
+  config = std::move(other.config);
+  // TODO(roth): Use std::move() once channel args is converted to C++.
+  args = other.args;
+  other.args = nullptr;
+}
+
+LoadBalancingPolicy::UpdateArgs& LoadBalancingPolicy::UpdateArgs::operator=(
+    const UpdateArgs& other) {
+  addresses = other.addresses;
+  config = other.config;
+  grpc_channel_args_destroy(args);
+  args = grpc_channel_args_copy(other.args);
+  return *this;
+}
+
+LoadBalancingPolicy::UpdateArgs& LoadBalancingPolicy::UpdateArgs::operator=(
+    UpdateArgs&& other) {
+  addresses = std::move(other.addresses);
+  config = std::move(other.config);
+  // TODO(roth): Use std::move() once channel args is converted to C++.
+  grpc_channel_args_destroy(args);
+  args = other.args;
+  other.args = nullptr;
+  return *this;
+}
+
+//
+// LoadBalancingPolicy::QueuePicker
+//
+
+LoadBalancingPolicy::PickResult LoadBalancingPolicy::QueuePicker::Pick(
+    PickArgs /*args*/) {
+  // We invoke the parent's ExitIdleLocked() via a closure instead
+  // of doing it directly here, for two reasons:
+  // 1. ExitIdleLocked() may cause the policy's state to change and
+  //    a new picker to be delivered to the channel.  If that new
+  //    picker is delivered before ExitIdleLocked() returns, then by
+  //    the time this function returns, the pick will already have
+  //    been processed, and we'll be trying to re-process the same
+  //    pick again, leading to a crash.
+  // 2. We are currently running in the data plane combiner, but we
+  //    need to bounce into the control plane combiner to call
+  //    ExitIdleLocked().
+  if (!exit_idle_called_) {
+    exit_idle_called_ = true;
+    // Ref held by closure.
+    parent_->Ref(DEBUG_LOCATION, "QueuePicker::CallExitIdle").release();
+    parent_->combiner()->Run(
+        GRPC_CLOSURE_CREATE(&CallExitIdle, parent_.get(), nullptr),
+        GRPC_ERROR_NONE);
+  }
+  PickResult result;
+  result.type = PickResult::PICK_QUEUE;
+  return result;
+}
+
+void LoadBalancingPolicy::QueuePicker::CallExitIdle(void* arg,
+                                                    grpc_error* /*error*/) {
+  LoadBalancingPolicy* parent = static_cast<LoadBalancingPolicy*>(arg);
+  parent->ExitIdleLocked();
+  parent->Unref(DEBUG_LOCATION, "QueuePicker::CallExitIdle");
+}
+
+//
+// LoadBalancingPolicy::TransientFailurePicker
+//
+
+LoadBalancingPolicy::PickResult
+LoadBalancingPolicy::TransientFailurePicker::Pick(PickArgs /*args*/) {
+  PickResult result;
+  result.type = PickResult::PICK_FAILED;
+  result.error = GRPC_ERROR_REF(error_);
+  return result;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.h
new file mode 100644
index 0000000..7e9c206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy.h	
@@ -0,0 +1,412 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <functional>
+#include <iterator>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/subchannel_interface.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_trace_lb_policy_refcount;
+
+/// Interface for load balancing policies.
+///
+/// The following concepts are used here:
+///
+/// Channel: An abstraction that manages connections to backend servers
+///   on behalf of a client application.  The application creates a channel
+///   for a given server name and then sends calls (RPCs) on it, and the
+///   channel figures out which backend server to send each call to.  A channel
+///   contains a resolver, a load balancing policy (or a tree of LB policies),
+///   and a set of one or more subchannels.
+///
+/// Subchannel: A subchannel represents a connection to one backend server.
+///   The LB policy decides which subchannels to create, manages the
+///   connectivity state of those subchannels, and decides which subchannel
+///   to send any given call to.
+///
+/// Resolver: A plugin that takes a gRPC server URI and resolves it to a
+///   list of one or more addresses and a service config, as described
+///   in https://github.com/grpc/grpc/blob/master/doc/naming.md.  See
+///   resolver.h for the resolver API.
+///
+/// Load Balancing (LB) Policy: A plugin that takes a list of addresses
+///   from the resolver, maintains and manages a subchannel for each
+///   backend address, and decides which subchannel to send each call on.
+///   An LB policy has two parts:
+///   - A LoadBalancingPolicy, which deals with the control plane work of
+///     managing subchannels.
+///   - A SubchannelPicker, which handles the data plane work of
+///     determining which subchannel a given call should be sent on.
+
+/// LoadBalacingPolicy API.
+///
+/// Note: All methods with a "Locked" suffix must be called from the
+/// combiner passed to the constructor.
+///
+/// Any I/O done by the LB policy should be done under the pollset_set
+/// returned by \a interested_parties().
+// TODO(roth): Once we move to EventManager-based polling, remove the
+// interested_parties() hooks from the API.
+class LoadBalancingPolicy : public InternallyRefCounted<LoadBalancingPolicy> {
+ public:
+  // Represents backend metrics reported by the backend to the client.
+  struct BackendMetricData {
+    /// CPU utilization expressed as a fraction of available CPU resources.
+    double cpu_utilization;
+    /// Memory utilization expressed as a fraction of available memory
+    /// resources.
+    double mem_utilization;
+    /// Total requests per second being served by the backend.  This
+    /// should include all services that a backend is responsible for.
+    uint64_t requests_per_second;
+    /// Application-specific requests cost metrics.  Metric names are
+    /// determined by the application.  Each value is an absolute cost
+    /// (e.g. 3487 bytes of storage) associated with the request.
+    std::map<StringView, double, StringLess> request_cost;
+    /// Application-specific resource utilization metrics.  Metric names
+    /// are determined by the application.  Each value is expressed as a
+    /// fraction of total resources available.
+    std::map<StringView, double, StringLess> utilization;
+  };
+
+  /// Interface for accessing per-call state.
+  /// Implemented by the client channel and used by the SubchannelPicker.
+  class CallState {
+   public:
+    CallState() = default;
+    virtual ~CallState() = default;
+
+    /// Allocates memory associated with the call, which will be
+    /// automatically freed when the call is complete.
+    /// It is more efficient to use this than to allocate memory directly
+    /// for allocations that need to be made on a per-call basis.
+    virtual void* Alloc(size_t size) = 0;
+
+    /// Returns the backend metric data returned by the server for the call,
+    /// or null if no backend metric data was returned.
+    virtual const BackendMetricData* GetBackendMetricData() = 0;
+  };
+
+  /// Interface for accessing metadata.
+  /// Implemented by the client channel and used by the SubchannelPicker.
+  class MetadataInterface {
+   public:
+    class iterator
+        : public std::iterator<std::input_iterator_tag,
+                               std::pair<StringView, StringView>,  // value_type
+                               std::ptrdiff_t,  // difference_type
+                               std::pair<StringView, StringView>*,  // pointer
+                               std::pair<StringView, StringView>&   // reference
+                               > {
+     public:
+      iterator(const MetadataInterface* md, intptr_t handle)
+          : md_(md), handle_(handle) {}
+      iterator& operator++() {
+        handle_ = md_->IteratorHandleNext(handle_);
+        return *this;
+      }
+      bool operator==(iterator other) const {
+        return md_ == other.md_ && handle_ == other.handle_;
+      }
+      bool operator!=(iterator other) const { return !(*this == other); }
+      value_type operator*() const { return md_->IteratorHandleGet(handle_); }
+
+     private:
+      friend class MetadataInterface;
+      const MetadataInterface* md_;
+      intptr_t handle_;
+    };
+
+    virtual ~MetadataInterface() = default;
+
+    /// Adds a key/value pair.
+    /// Does NOT take ownership of \a key or \a value.
+    /// Implementations must ensure that the key and value remain alive
+    /// until the call ends.  If desired, they may be allocated via
+    /// CallState::Alloc().
+    virtual void Add(StringView key, StringView value) = 0;
+
+    /// Iteration interface.
+    virtual iterator begin() const = 0;
+    virtual iterator end() const = 0;
+
+    /// Removes the element pointed to by \a it.
+    /// Returns an iterator pointing to the next element.
+    virtual iterator erase(iterator it) = 0;
+
+   protected:
+    intptr_t GetIteratorHandle(const iterator& it) const { return it.handle_; }
+
+   private:
+    friend class iterator;
+
+    virtual intptr_t IteratorHandleNext(intptr_t handle) const = 0;
+    virtual std::pair<StringView /*key*/, StringView /*value */>
+    IteratorHandleGet(intptr_t handle) const = 0;
+  };
+
+  /// Arguments used when picking a subchannel for a call.
+  struct PickArgs {
+    /// Initial metadata associated with the picking call.
+    /// The LB policy may use the existing metadata to influence its routing
+    /// decision, and it may add new metadata elements to be sent with the
+    /// call to the chosen backend.
+    MetadataInterface* initial_metadata;
+    /// An interface for accessing call state.  Can be used to allocate
+    /// data associated with the call in an efficient way.
+    CallState* call_state;
+  };
+
+  /// The result of picking a subchannel for a call.
+  struct PickResult {
+    enum ResultType {
+      /// Pick complete.  If \a subchannel is non-null, the client channel
+      /// will immediately proceed with the call on that subchannel;
+      /// otherwise, it will drop the call.
+      PICK_COMPLETE,
+      /// Pick cannot be completed until something changes on the control
+      /// plane.  The client channel will queue the pick and try again the
+      /// next time the picker is updated.
+      PICK_QUEUE,
+      /// Pick failed.  If the call is wait_for_ready, the client channel
+      /// will wait for the next picker and try again; otherwise, it
+      /// will immediately fail the call with the status indicated via
+      /// \a error (although the call may be retried if the client channel
+      /// is configured to do so).
+      PICK_FAILED,
+    };
+    ResultType type;
+
+    /// Used only if type is PICK_COMPLETE.  Will be set to the selected
+    /// subchannel, or nullptr if the LB policy decides to drop the call.
+    RefCountedPtr<SubchannelInterface> subchannel;
+
+    /// Used only if type is PICK_FAILED.
+    /// Error to be set when returning a failure.
+    // TODO(roth): Replace this with something similar to grpc::Status,
+    // so that we don't expose grpc_error to this API.
+    grpc_error* error = GRPC_ERROR_NONE;
+
+    /// Used only if type is PICK_COMPLETE.
+    /// Callback set by LB policy to be notified of trailing metadata.
+    /// If set by LB policy, the client channel will invoke the callback
+    /// when trailing metadata is returned.
+    /// The metadata may be modified by the callback.  However, the callback
+    /// does not take ownership, so any data that needs to be used after
+    /// returning must be copied.
+    /// The call state can be used to obtain backend metric data.
+    std::function<void(grpc_error*, MetadataInterface*, CallState*)>
+        recv_trailing_metadata_ready;
+  };
+
+  /// A subchannel picker is the object used to pick the subchannel to
+  /// use for a given call.  This is implemented by the LB policy and
+  /// used by the client channel to perform picks.
+  ///
+  /// Pickers are intended to encapsulate all of the state and logic
+  /// needed on the data plane (i.e., to actually process picks for
+  /// individual calls sent on the channel) while excluding all of the
+  /// state and logic needed on the control plane (i.e., resolver
+  /// updates, connectivity state notifications, etc); the latter should
+  /// live in the LB policy object itself.
+  ///
+  /// Currently, pickers are always accessed from within the
+  /// client_channel data plane combiner, so they do not have to be
+  /// thread-safe.
+  class SubchannelPicker {
+   public:
+    SubchannelPicker() = default;
+    virtual ~SubchannelPicker() = default;
+
+    virtual PickResult Pick(PickArgs args) = 0;
+  };
+
+  /// A proxy object implemented by the client channel and used by the
+  /// LB policy to communicate with the channel.
+  // TODO(juanlishen): Consider adding a mid-layer subclass that helps handle
+  // things like swapping in pending policy when it's ready. Currently, we are
+  // duplicating the logic in many subclasses.
+  class ChannelControlHelper {
+   public:
+    ChannelControlHelper() = default;
+    virtual ~ChannelControlHelper() = default;
+
+    /// Creates a new subchannel with the specified channel args.
+    virtual RefCountedPtr<SubchannelInterface> CreateSubchannel(
+        const grpc_channel_args& args) = 0;
+
+    /// Sets the connectivity state and returns a new picker to be used
+    /// by the client channel.
+    virtual void UpdateState(grpc_connectivity_state state,
+                             std::unique_ptr<SubchannelPicker>) = 0;
+
+    /// Requests that the resolver re-resolve.
+    virtual void RequestReresolution() = 0;
+
+    /// Adds a trace message associated with the channel.
+    enum TraceSeverity { TRACE_INFO, TRACE_WARNING, TRACE_ERROR };
+    virtual void AddTraceEvent(TraceSeverity severity, StringView message) = 0;
+  };
+
+  /// Interface for configuration data used by an LB policy implementation.
+  /// Individual implementations will create a subclass that adds methods to
+  /// return the parameters they need.
+  class Config : public RefCounted<Config> {
+   public:
+    virtual ~Config() = default;
+
+    // Returns the load balancing policy name
+    virtual const char* name() const = 0;
+  };
+
+  /// Data passed to the UpdateLocked() method when new addresses and
+  /// config are available.
+  struct UpdateArgs {
+    ServerAddressList addresses;
+    RefCountedPtr<Config> config;
+    const grpc_channel_args* args = nullptr;
+
+    // TODO(roth): Remove everything below once channel args is
+    // converted to a copyable and movable C++ object.
+    UpdateArgs() = default;
+    ~UpdateArgs() { grpc_channel_args_destroy(args); }
+    UpdateArgs(const UpdateArgs& other);
+    UpdateArgs(UpdateArgs&& other);
+    UpdateArgs& operator=(const UpdateArgs& other);
+    UpdateArgs& operator=(UpdateArgs&& other);
+  };
+
+  /// Args used to instantiate an LB policy.
+  struct Args {
+    /// The combiner under which all LB policy calls will be run.
+    /// Policy does NOT take ownership of the reference to the combiner.
+    // TODO(roth): Once we have a C++-like interface for combiners, this
+    // API should change to take a smart pointer that does pass ownership
+    // of a reference.
+    Combiner* combiner = nullptr;
+    /// Channel control helper.
+    /// Note: LB policies MUST NOT call any method on the helper from
+    /// their constructor.
+    std::unique_ptr<ChannelControlHelper> channel_control_helper;
+    /// Channel args.
+    // TODO(roth): Find a better channel args representation for this API.
+    // TODO(roth): Clarify ownership semantics here -- currently, this
+    // does not take ownership of args, which is the opposite of how we
+    // handle them in UpdateArgs.
+    const grpc_channel_args* args = nullptr;
+  };
+
+  explicit LoadBalancingPolicy(Args args, intptr_t initial_refcount = 1);
+  virtual ~LoadBalancingPolicy();
+
+  // Not copyable nor movable.
+  LoadBalancingPolicy(const LoadBalancingPolicy&) = delete;
+  LoadBalancingPolicy& operator=(const LoadBalancingPolicy&) = delete;
+
+  /// Returns the name of the LB policy.
+  virtual const char* name() const = 0;
+
+  /// Updates the policy with new data from the resolver.  Will be invoked
+  /// immediately after LB policy is constructed, and then again whenever
+  /// the resolver returns a new result.
+  virtual void UpdateLocked(UpdateArgs) = 0;  // NOLINT
+
+  /// Tries to enter a READY connectivity state.
+  /// This is a no-op by default, since most LB policies never go into
+  /// IDLE state.
+  virtual void ExitIdleLocked() {}
+
+  /// Resets connection backoff.
+  virtual void ResetBackoffLocked() = 0;
+
+  grpc_pollset_set* interested_parties() const { return interested_parties_; }
+
+  // Note: This must be invoked while holding the combiner.
+  void Orphan() override;
+
+  // A picker that returns PICK_QUEUE for all picks.
+  // Also calls the parent LB policy's ExitIdleLocked() method when the
+  // first pick is seen.
+  class QueuePicker : public SubchannelPicker {
+   public:
+    explicit QueuePicker(RefCountedPtr<LoadBalancingPolicy> parent)
+        : parent_(std::move(parent)) {}
+
+    ~QueuePicker() { parent_.reset(DEBUG_LOCATION, "QueuePicker"); }
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    static void CallExitIdle(void* arg, grpc_error* error);
+
+    RefCountedPtr<LoadBalancingPolicy> parent_;
+    bool exit_idle_called_ = false;
+  };
+
+  // A picker that returns PICK_TRANSIENT_FAILURE for all picks.
+  class TransientFailurePicker : public SubchannelPicker {
+   public:
+    explicit TransientFailurePicker(grpc_error* error) : error_(error) {}
+    ~TransientFailurePicker() override { GRPC_ERROR_UNREF(error_); }
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    grpc_error* error_;
+  };
+
+ protected:
+  Combiner* combiner() const { return combiner_; }
+
+  // Note: LB policies MUST NOT call any method on the helper from their
+  // constructor.
+  ChannelControlHelper* channel_control_helper() const {
+    return channel_control_helper_.get();
+  }
+
+  /// Shuts down the policy.
+  virtual void ShutdownLocked() = 0;
+
+ private:
+  /// Combiner under which LB policy actions take place.
+  Combiner* combiner_;
+  /// Owned pointer to interested parties in load balancing decisions.
+  grpc_pollset_set* interested_parties_;
+  /// Channel control helper.
+  std::unique_ptr<ChannelControlHelper> channel_control_helper_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.cc
new file mode 100644
index 0000000..1ed5a69
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.cc	
@@ -0,0 +1,291 @@
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include <cstring>
+
+#include "src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h"
+
+#include "absl/strings/str_cat.h"
+
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+
+namespace grpc_core {
+
+//
+// ChildPolicyHandler::Helper
+//
+
+class ChildPolicyHandler::Helper
+    : public LoadBalancingPolicy::ChannelControlHelper {
+ public:
+  explicit Helper(RefCountedPtr<ChildPolicyHandler> parent)
+      : parent_(std::move(parent)) {}
+
+  ~Helper() { parent_.reset(DEBUG_LOCATION, "Helper"); }
+
+  RefCountedPtr<SubchannelInterface> CreateSubchannel(
+      const grpc_channel_args& args) override {
+    if (parent_->shutting_down_) return nullptr;
+    if (!CalledByCurrentChild() && !CalledByPendingChild()) return nullptr;
+    return parent_->channel_control_helper()->CreateSubchannel(args);
+  }
+
+  void UpdateState(grpc_connectivity_state state,
+                   std::unique_ptr<SubchannelPicker> picker) override {
+    if (parent_->shutting_down_) return;
+    // If this request is from the pending child policy, ignore it until
+    // it reports READY, at which point we swap it into place.
+    if (CalledByPendingChild()) {
+      if (GRPC_TRACE_FLAG_ENABLED(*(parent_->tracer_))) {
+        gpr_log(GPR_INFO,
+                "[child_policy_handler %p] helper %p: pending child policy %p "
+                "reports state=%s",
+                parent_.get(), this, child_, ConnectivityStateName(state));
+      }
+      if (state != GRPC_CHANNEL_READY) return;
+      grpc_pollset_set_del_pollset_set(
+          parent_->child_policy_->interested_parties(),
+          parent_->interested_parties());
+      parent_->child_policy_ = std::move(parent_->pending_child_policy_);
+    } else if (!CalledByCurrentChild()) {
+      // This request is from an outdated child, so ignore it.
+      return;
+    }
+    parent_->channel_control_helper()->UpdateState(state, std::move(picker));
+  }
+
+  void RequestReresolution() override {
+    if (parent_->shutting_down_) return;
+    // Only forward re-resolution requests from the most recent child,
+    // since that's the one that will be receiving any update we receive
+    // from the resolver.
+    const LoadBalancingPolicy* latest_child_policy =
+        parent_->pending_child_policy_ != nullptr
+            ? parent_->pending_child_policy_.get()
+            : parent_->child_policy_.get();
+    if (child_ != latest_child_policy) return;
+    if (GRPC_TRACE_FLAG_ENABLED(*(parent_->tracer_))) {
+      gpr_log(GPR_INFO, "[child_policy_handler %p] started name re-resolving",
+              parent_.get());
+    }
+    parent_->channel_control_helper()->RequestReresolution();
+  }
+
+  void AddTraceEvent(TraceSeverity severity, StringView message) override {
+    if (parent_->shutting_down_) return;
+    if (!CalledByPendingChild() && !CalledByCurrentChild()) return;
+    parent_->channel_control_helper()->AddTraceEvent(severity, message);
+  }
+
+  void set_child(LoadBalancingPolicy* child) { child_ = child; }
+
+ private:
+  bool CalledByPendingChild() const {
+    GPR_ASSERT(child_ != nullptr);
+    return child_ == parent_->pending_child_policy_.get();
+  }
+
+  bool CalledByCurrentChild() const {
+    GPR_ASSERT(child_ != nullptr);
+    return child_ == parent_->child_policy_.get();
+  };
+
+  RefCountedPtr<ChildPolicyHandler> parent_;
+  LoadBalancingPolicy* child_ = nullptr;
+};
+
+//
+// ChildPolicyHandler
+//
+
+void ChildPolicyHandler::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[child_policy_handler %p] shutting down", this);
+  }
+  shutting_down_ = true;
+  if (child_policy_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+      gpr_log(GPR_INFO, "[child_policy_handler %p] shutting down lb_policy %p",
+              this, child_policy_.get());
+    }
+    grpc_pollset_set_del_pollset_set(child_policy_->interested_parties(),
+                                     interested_parties());
+    child_policy_.reset();
+  }
+  if (pending_child_policy_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+      gpr_log(GPR_INFO,
+              "[child_policy_handler %p] shutting down pending lb_policy %p",
+              this, pending_child_policy_.get());
+    }
+    grpc_pollset_set_del_pollset_set(
+        pending_child_policy_->interested_parties(), interested_parties());
+    pending_child_policy_.reset();
+  }
+}
+
+void ChildPolicyHandler::UpdateLocked(UpdateArgs args) {
+  // If the child policy name changes, we need to create a new child
+  // policy.  When this happens, we leave child_policy_ as-is and store
+  // the new child policy in pending_child_policy_.  Once the new child
+  // policy transitions into state READY, we swap it into child_policy_,
+  // replacing the original child policy.  So pending_child_policy_ is
+  // non-null only between when we apply an update that changes the child
+  // policy name and when the new child reports state READY.
+  //
+  // Updates can arrive at any point during this transition.  We always
+  // apply updates relative to the most recently created child policy,
+  // even if the most recent one is still in pending_child_policy_.  This
+  // is true both when applying the updates to an existing child policy
+  // and when determining whether we need to create a new policy.
+  //
+  // As a result of this, there are several cases to consider here:
+  //
+  // 1. We have no existing child policy (i.e., this is the first update
+  //    we receive after being created; in this case, both child_policy_
+  //    and pending_child_policy_ are null).  In this case, we create a
+  //    new child policy and store it in child_policy_.
+  //
+  // 2. We have an existing child policy and have no pending child policy
+  //    from a previous update (i.e., either there has not been a
+  //    previous update that changed the policy name, or we have already
+  //    finished swapping in the new policy; in this case, child_policy_
+  //    is non-null but pending_child_policy_ is null).  In this case:
+  //    a. If going from the current config to the new config does not
+  //       require a new policy, then we update the existing child policy.
+  //    b. If going from the current config to the new config does require a
+  //       new policy, we create a new policy.  The policy will be stored in
+  //       pending_child_policy_ and will later be swapped into
+  //       child_policy_ by the helper when the new child transitions
+  //       into state READY.
+  //
+  // 3. We have an existing child policy and have a pending child policy
+  //    from a previous update (i.e., a previous update set
+  //    pending_child_policy_ as per case 2b above and that policy has
+  //    not yet transitioned into state READY and been swapped into
+  //    child_policy_; in this case, both child_policy_ and
+  //    pending_child_policy_ are non-null).  In this case:
+  //    a. If going from the current config to the new config does not
+  //       require a new policy, then we update the existing pending
+  //       child policy.
+  //    b. If going from the current config to the new config does require a
+  //       new child policy, then we create a new policy.  The new
+  //       policy is stored in pending_child_policy_ (replacing the one
+  //       that was there before, which will be immediately shut down)
+  //       and will later be swapped into child_policy_ by the helper
+  //       when the new child transitions into state READY.
+  const bool create_policy =
+      // case 1
+      child_policy_ == nullptr ||
+      // cases 2b and 3b
+      ConfigChangeRequiresNewPolicyInstance(current_config_.get(),
+                                            args.config.get());
+  current_config_ = args.config;
+  LoadBalancingPolicy* policy_to_update = nullptr;
+  if (create_policy) {
+    // Cases 1, 2b, and 3b: create a new child policy.
+    // If child_policy_ is null, we set it (case 1), else we set
+    // pending_child_policy_ (cases 2b and 3b).
+    if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+      gpr_log(GPR_INFO,
+              "[child_policy_handler %p] creating new %schild policy %s", this,
+              child_policy_ == nullptr ? "" : "pending ", args.config->name());
+    }
+    auto& lb_policy =
+        child_policy_ == nullptr ? child_policy_ : pending_child_policy_;
+    lb_policy = CreateChildPolicy(args.config->name(), *args.args);
+    policy_to_update = lb_policy.get();
+  } else {
+    // Cases 2a and 3a: update an existing policy.
+    // If we have a pending child policy, send the update to the pending
+    // policy (case 3a), else send it to the current policy (case 2a).
+    policy_to_update = pending_child_policy_ != nullptr
+                           ? pending_child_policy_.get()
+                           : child_policy_.get();
+  }
+  GPR_ASSERT(policy_to_update != nullptr);
+  // Update the policy.
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[child_policy_handler %p] updating %schild policy %p",
+            this,
+            policy_to_update == pending_child_policy_.get() ? "pending " : "",
+            policy_to_update);
+  }
+  policy_to_update->UpdateLocked(std::move(args));
+}
+
+void ChildPolicyHandler::ExitIdleLocked() {
+  if (child_policy_ != nullptr) {
+    child_policy_->ExitIdleLocked();
+    if (pending_child_policy_ != nullptr) {
+      pending_child_policy_->ExitIdleLocked();
+    }
+  }
+}
+
+void ChildPolicyHandler::ResetBackoffLocked() {
+  if (child_policy_ != nullptr) {
+    child_policy_->ResetBackoffLocked();
+    if (pending_child_policy_ != nullptr) {
+      pending_child_policy_->ResetBackoffLocked();
+    }
+  }
+}
+
+OrphanablePtr<LoadBalancingPolicy> ChildPolicyHandler::CreateChildPolicy(
+    const char* child_policy_name, const grpc_channel_args& args) {
+  Helper* helper = new Helper(Ref(DEBUG_LOCATION, "Helper"));
+  LoadBalancingPolicy::Args lb_policy_args;
+  lb_policy_args.combiner = combiner();
+  lb_policy_args.channel_control_helper =
+      std::unique_ptr<ChannelControlHelper>(helper);
+  lb_policy_args.args = &args;
+  OrphanablePtr<LoadBalancingPolicy> lb_policy =
+      CreateLoadBalancingPolicy(child_policy_name, std::move(lb_policy_args));
+  if (GPR_UNLIKELY(lb_policy == nullptr)) {
+    gpr_log(GPR_ERROR, "could not create LB policy \"%s\"", child_policy_name);
+    return nullptr;
+  }
+  helper->set_child(lb_policy.get());
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO,
+            "[child_policy_handler %p] created new LB policy \"%s\" (%p)", this,
+            child_policy_name, lb_policy.get());
+  }
+  channel_control_helper()->AddTraceEvent(
+      ChannelControlHelper::TRACE_INFO,
+      absl::StrCat("Created new LB policy \"", child_policy_name, "\""));
+  grpc_pollset_set_add_pollset_set(lb_policy->interested_parties(),
+                                   interested_parties());
+  return lb_policy;
+}
+
+bool ChildPolicyHandler::ConfigChangeRequiresNewPolicyInstance(
+    LoadBalancingPolicy::Config* old_config,
+    LoadBalancingPolicy::Config* new_config) const {
+  return strcmp(old_config->name(), new_config->name()) != 0;
+}
+
+OrphanablePtr<LoadBalancingPolicy>
+ChildPolicyHandler::CreateLoadBalancingPolicy(
+    const char* name, LoadBalancingPolicy::Args args) const {
+  return LoadBalancingPolicyRegistry::CreateLoadBalancingPolicy(
+      name, std::move(args));
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h
new file mode 100644
index 0000000..d67f326
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h	
@@ -0,0 +1,83 @@
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+// A class that makes it easy to gracefully switch child policies.
+//
+// Callers should instantiate this instead of using
+// LoadBalancingPolicyRegistry::CreateLoadBalancingPolicy().  Once
+// instantiated, this object will automatically take care of
+// constructing the child policy as needed upon receiving an update.
+class ChildPolicyHandler : public LoadBalancingPolicy {
+ public:
+  ChildPolicyHandler(Args args, TraceFlag* tracer)
+      : LoadBalancingPolicy(std::move(args)), tracer_(tracer) {}
+
+  virtual const char* name() const override { return "child_policy_handler"; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ExitIdleLocked() override;
+  void ResetBackoffLocked() override;
+
+  // Returns true if transitioning from the old config to the new config
+  // requires instantiating a new policy object.
+  virtual bool ConfigChangeRequiresNewPolicyInstance(
+      LoadBalancingPolicy::Config* old_config,
+      LoadBalancingPolicy::Config* new_config) const;
+
+  // Instantiates a new policy of the specified name.
+  // May be overridden by subclasses to avoid recursion when an LB
+  // policy factory returns a ChildPolicyHandler.
+  virtual OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      const char* name, LoadBalancingPolicy::Args args) const;
+
+ private:
+  class Helper;
+
+  void ShutdownLocked() override;
+
+  OrphanablePtr<LoadBalancingPolicy> CreateChildPolicy(
+      const char* child_policy_name, const grpc_channel_args& args);
+
+  // Passed in from caller at construction time.
+  TraceFlag* tracer_;
+
+  bool shutting_down_ = false;
+
+  // The most recent config passed to UpdateLocked().
+  // If pending_child_policy_ is non-null, this is the config passed to
+  // pending_child_policy_; otherwise, it's the config passed to child_policy_.
+  RefCountedPtr<LoadBalancingPolicy::Config> current_config_;
+
+  // Child LB policy.
+  OrphanablePtr<LoadBalancingPolicy> child_policy_;
+  OrphanablePtr<LoadBalancingPolicy> pending_child_policy_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_CHILD_POLICY_HANDLER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.cc
new file mode 100644
index 0000000..c8d1b1d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.cc	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h"
+
+#include <string.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/profiling/timers.h"
+
+static grpc_error* clr_init_channel_elem(grpc_channel_element* /*elem*/,
+                                         grpc_channel_element_args* /*args*/) {
+  return GRPC_ERROR_NONE;
+}
+
+static void clr_destroy_channel_elem(grpc_channel_element* /*elem*/) {}
+
+namespace {
+
+struct call_data {
+  // Stats object to update.
+  grpc_core::RefCountedPtr<grpc_core::GrpcLbClientStats> client_stats;
+  // State for intercepting send_initial_metadata.
+  grpc_closure on_complete_for_send;
+  grpc_closure* original_on_complete_for_send;
+  bool send_initial_metadata_succeeded = false;
+  // State for intercepting recv_initial_metadata.
+  grpc_closure recv_initial_metadata_ready;
+  grpc_closure* original_recv_initial_metadata_ready;
+  bool recv_initial_metadata_succeeded = false;
+};
+
+}  // namespace
+
+static void on_complete_for_send(void* arg, grpc_error* error) {
+  call_data* calld = static_cast<call_data*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    calld->send_initial_metadata_succeeded = true;
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, calld->original_on_complete_for_send,
+                          GRPC_ERROR_REF(error));
+}
+
+static void recv_initial_metadata_ready(void* arg, grpc_error* error) {
+  call_data* calld = static_cast<call_data*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    calld->recv_initial_metadata_succeeded = true;
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_initial_metadata_ready,
+                          GRPC_ERROR_REF(error));
+}
+
+static grpc_error* clr_init_call_elem(grpc_call_element* elem,
+                                      const grpc_call_element_args* args) {
+  GPR_ASSERT(args->context != nullptr);
+  new (elem->call_data) call_data();
+  return GRPC_ERROR_NONE;
+}
+
+static void clr_destroy_call_elem(grpc_call_element* elem,
+                                  const grpc_call_final_info* /*final_info*/,
+                                  grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->client_stats != nullptr) {
+    // Record call finished, optionally setting client_failed_to_send and
+    // received.
+    calld->client_stats->AddCallFinished(
+        !calld->send_initial_metadata_succeeded /* client_failed_to_send */,
+        calld->recv_initial_metadata_succeeded /* known_received */);
+  }
+  calld->~call_data();
+}
+
+static void clr_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  GPR_TIMER_SCOPE("clr_start_transport_stream_op_batch", 0);
+  // Handle send_initial_metadata.
+  if (batch->send_initial_metadata) {
+    // Grab client stats object from metadata.
+    grpc_linked_mdelem* client_stats_md =
+        batch->payload->send_initial_metadata.send_initial_metadata->list.head;
+    for (; client_stats_md != nullptr;
+         client_stats_md = client_stats_md->next) {
+      if (GRPC_SLICE_START_PTR(GRPC_MDKEY(client_stats_md->md)) ==
+          static_cast<const void*>(grpc_core::kGrpcLbClientStatsMetadataKey)) {
+        break;
+      }
+    }
+    if (client_stats_md != nullptr) {
+      grpc_core::GrpcLbClientStats* client_stats =
+          const_cast<grpc_core::GrpcLbClientStats*>(
+              reinterpret_cast<const grpc_core::GrpcLbClientStats*>(
+                  GRPC_SLICE_START_PTR(GRPC_MDVALUE(client_stats_md->md))));
+      if (client_stats != nullptr) {
+        calld->client_stats.reset(client_stats);
+        // Intercept completion.
+        calld->original_on_complete_for_send = batch->on_complete;
+        GRPC_CLOSURE_INIT(&calld->on_complete_for_send, on_complete_for_send,
+                          calld, grpc_schedule_on_exec_ctx);
+        batch->on_complete = &calld->on_complete_for_send;
+      }
+      // Remove metadata so it doesn't go out on the wire.
+      grpc_metadata_batch_remove(
+          batch->payload->send_initial_metadata.send_initial_metadata,
+          client_stats_md);
+    }
+  }
+  // Intercept completion of recv_initial_metadata.
+  if (batch->recv_initial_metadata) {
+    calld->original_recv_initial_metadata_ready =
+        batch->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    GRPC_CLOSURE_INIT(&calld->recv_initial_metadata_ready,
+                      recv_initial_metadata_ready, calld,
+                      grpc_schedule_on_exec_ctx);
+    batch->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->recv_initial_metadata_ready;
+  }
+  // Chain to next filter.
+  grpc_call_next_op(elem, batch);
+}
+
+const grpc_channel_filter grpc_client_load_reporting_filter = {
+    clr_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    clr_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    clr_destroy_call_elem,
+    0,  // sizeof(channel_data)
+    clr_init_channel_elem,
+    clr_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "client_load_reporting"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h
new file mode 100644
index 0000000..838e2ef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_client_load_reporting_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_CLIENT_LOAD_REPORTING_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc
new file mode 100644
index 0000000..7896be2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc	
@@ -0,0 +1,1815 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// Implementation of the gRPC LB policy.
+///
+/// This policy takes as input a list of resolved addresses, which must
+/// include at least one balancer address.
+///
+/// An internal channel (\a lb_channel_) is created for the addresses
+/// from that are balancers.  This channel behaves just like a regular
+/// channel that uses pick_first to select from the list of balancer
+/// addresses.
+///
+/// When we get our initial update, we instantiate the internal *streaming*
+/// call to the LB server (whichever address pick_first chose).  The call
+/// will be complete when either the balancer sends status or when we cancel
+/// the call (e.g., because we are shutting down).  In needed, we retry the
+/// call.  If we received at least one valid message from the server, a new
+/// call attempt will be made immediately; otherwise, we apply back-off
+/// delays between attempts.
+///
+/// We maintain an internal round_robin policy instance for distributing
+/// requests across backends.  Whenever we receive a new serverlist from
+/// the balancer, we update the round_robin policy with the new list of
+/// addresses.  If we cannot communicate with the balancer on startup,
+/// however, we may enter fallback mode, in which case we will populate
+/// the child policy's addresses from the backend addresses returned by the
+/// resolver.
+///
+/// Once a child policy instance is in place (and getting updated as described),
+/// calls for a pick, a ping, or a cancellation will be serviced right
+/// away by forwarding them to the child policy instance.  Any time there's no
+/// child policy available (i.e., right after the creation of the gRPCLB
+/// policy), pick requests are queued.
+///
+/// \see https://github.com/grpc/grpc/blob/master/doc/load-balancing.md for the
+/// high level design and details.
+
+// With the addition of a libuv endpoint, sockaddr.h now includes uv.h when
+// using that endpoint. Because of various transitive includes in uv.h,
+// including windows.h on Windows, uv.h must be included before other system
+// headers. Therefore, sockaddr.h must always be included first.
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define GRPC_GRPCLB_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_GRPCLB_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_GRPCLB_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_GRPCLB_RECONNECT_JITTER 0.2
+#define GRPC_GRPCLB_DEFAULT_FALLBACK_TIMEOUT_MS 10000
+
+#define GRPC_ARG_GRPCLB_ADDRESS_LB_TOKEN "grpc.grpclb_address_lb_token"
+#define GRPC_ARG_GRPCLB_ADDRESS_CLIENT_STATS "grpc.grpclb_address_client_stats"
+
+namespace grpc_core {
+
+TraceFlag grpc_lb_glb_trace(false, "glb");
+
+const char kGrpcLbClientStatsMetadataKey[] = "grpclb_client_stats";
+const char kGrpcLbLbTokenMetadataKey[] = "lb-token";
+
+namespace {
+
+constexpr char kGrpclb[] = "grpclb";
+
+class GrpcLbConfig : public LoadBalancingPolicy::Config {
+ public:
+  explicit GrpcLbConfig(RefCountedPtr<LoadBalancingPolicy::Config> child_policy)
+      : child_policy_(std::move(child_policy)) {}
+  const char* name() const override { return kGrpclb; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> child_policy() const {
+    return child_policy_;
+  }
+
+ private:
+  RefCountedPtr<LoadBalancingPolicy::Config> child_policy_;
+};
+
+class GrpcLb : public LoadBalancingPolicy {
+ public:
+  explicit GrpcLb(Args args);
+
+  const char* name() const override { return kGrpclb; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ResetBackoffLocked() override;
+
+ private:
+  /// Contains a call to the LB server and all the data related to the call.
+  class BalancerCallState : public InternallyRefCounted<BalancerCallState> {
+   public:
+    explicit BalancerCallState(
+        RefCountedPtr<LoadBalancingPolicy> parent_grpclb_policy);
+    ~BalancerCallState();
+
+    // It's the caller's responsibility to ensure that Orphan() is called from
+    // inside the combiner.
+    void Orphan() override;
+
+    void StartQuery();
+
+    GrpcLbClientStats* client_stats() const { return client_stats_.get(); }
+
+    bool seen_initial_response() const { return seen_initial_response_; }
+    bool seen_serverlist() const { return seen_serverlist_; }
+
+   private:
+    GrpcLb* grpclb_policy() const {
+      return static_cast<GrpcLb*>(grpclb_policy_.get());
+    }
+
+    void ScheduleNextClientLoadReportLocked();
+    void SendClientLoadReportLocked();
+
+    static void MaybeSendClientLoadReport(void* arg, grpc_error* error);
+    static void ClientLoadReportDone(void* arg, grpc_error* error);
+    static void OnInitialRequestSent(void* arg, grpc_error* error);
+    static void OnBalancerMessageReceived(void* arg, grpc_error* error);
+    static void OnBalancerStatusReceived(void* arg, grpc_error* error);
+
+    static void MaybeSendClientLoadReportLocked(void* arg, grpc_error* error);
+    static void ClientLoadReportDoneLocked(void* arg, grpc_error* error);
+    static void OnInitialRequestSentLocked(void* arg, grpc_error* error);
+    static void OnBalancerMessageReceivedLocked(void* arg, grpc_error* error);
+    static void OnBalancerStatusReceivedLocked(void* arg, grpc_error* error);
+
+    // The owning LB policy.
+    RefCountedPtr<LoadBalancingPolicy> grpclb_policy_;
+
+    // The streaming call to the LB server. Always non-NULL.
+    grpc_call* lb_call_ = nullptr;
+
+    // recv_initial_metadata
+    grpc_metadata_array lb_initial_metadata_recv_;
+
+    // send_message
+    grpc_byte_buffer* send_message_payload_ = nullptr;
+    grpc_closure lb_on_initial_request_sent_;
+
+    // recv_message
+    grpc_byte_buffer* recv_message_payload_ = nullptr;
+    grpc_closure lb_on_balancer_message_received_;
+    bool seen_initial_response_ = false;
+    bool seen_serverlist_ = false;
+
+    // recv_trailing_metadata
+    grpc_closure lb_on_balancer_status_received_;
+    grpc_metadata_array lb_trailing_metadata_recv_;
+    grpc_status_code lb_call_status_;
+    grpc_slice lb_call_status_details_;
+
+    // The stats for client-side load reporting associated with this LB call.
+    // Created after the first serverlist is received.
+    RefCountedPtr<GrpcLbClientStats> client_stats_;
+    grpc_millis client_stats_report_interval_ = 0;
+    grpc_timer client_load_report_timer_;
+    bool client_load_report_timer_callback_pending_ = false;
+    bool last_client_load_report_counters_were_zero_ = false;
+    bool client_load_report_is_due_ = false;
+    // The closure used for either the load report timer or the callback for
+    // completion of sending the load report.
+    grpc_closure client_load_report_closure_;
+  };
+
+  class Serverlist : public RefCounted<Serverlist> {
+   public:
+    // Takes ownership of serverlist.
+    explicit Serverlist(std::vector<GrpcLbServer> serverlist)
+        : serverlist_(std::move(serverlist)) {}
+
+    bool operator==(const Serverlist& other) const;
+
+    const std::vector<GrpcLbServer>& serverlist() const { return serverlist_; }
+
+    // Returns a text representation suitable for logging.
+    grpc_core::UniquePtr<char> AsText() const;
+
+    // Extracts all non-drop entries into a ServerAddressList.
+    ServerAddressList GetServerAddressList(
+        GrpcLbClientStats* client_stats) const;
+
+    // Returns true if the serverlist contains at least one drop entry and
+    // no backend address entries.
+    bool ContainsAllDropEntries() const;
+
+    // Returns the LB token to use for a drop, or null if the call
+    // should not be dropped.
+    //
+    // Note: This is called from the picker, so it will be invoked in
+    // the channel's data plane combiner, NOT the control plane
+    // combiner.  It should not be accessed by any other part of the LB
+    // policy.
+    const char* ShouldDrop();
+
+   private:
+    std::vector<GrpcLbServer> serverlist_;
+
+    // Guarded by the channel's data plane combiner, NOT the control
+    // plane combiner.  It should not be accessed by anything but the
+    // picker via the ShouldDrop() method.
+    size_t drop_index_ = 0;
+  };
+
+  class Picker : public SubchannelPicker {
+   public:
+    Picker(GrpcLb* parent, RefCountedPtr<Serverlist> serverlist,
+           std::unique_ptr<SubchannelPicker> child_picker,
+           RefCountedPtr<GrpcLbClientStats> client_stats)
+        : parent_(parent),
+          serverlist_(std::move(serverlist)),
+          child_picker_(std::move(child_picker)),
+          client_stats_(std::move(client_stats)) {}
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    // Storing the address for logging, but not holding a ref.
+    // DO NOT DEFERENCE!
+    GrpcLb* parent_;
+
+    // Serverlist to be used for determining drops.
+    RefCountedPtr<Serverlist> serverlist_;
+
+    std::unique_ptr<SubchannelPicker> child_picker_;
+    RefCountedPtr<GrpcLbClientStats> client_stats_;
+  };
+
+  class Helper : public ChannelControlHelper {
+   public:
+    explicit Helper(RefCountedPtr<GrpcLb> parent)
+        : parent_(std::move(parent)) {}
+
+    RefCountedPtr<SubchannelInterface> CreateSubchannel(
+        const grpc_channel_args& args) override;
+    void UpdateState(grpc_connectivity_state state,
+                     std::unique_ptr<SubchannelPicker> picker) override;
+    void RequestReresolution() override;
+    void AddTraceEvent(TraceSeverity severity, StringView message) override;
+
+   private:
+    RefCountedPtr<GrpcLb> parent_;
+  };
+
+  ~GrpcLb();
+
+  void ShutdownLocked() override;
+
+  // Helper functions used in UpdateLocked().
+  void ProcessAddressesAndChannelArgsLocked(const ServerAddressList& addresses,
+                                            const grpc_channel_args& args);
+  static void OnBalancerChannelConnectivityChanged(void* arg,
+                                                   grpc_error* error);
+  static void OnBalancerChannelConnectivityChangedLocked(void* arg,
+                                                         grpc_error* error);
+  void CancelBalancerChannelConnectivityWatchLocked();
+
+  // Methods for dealing with fallback state.
+  void MaybeEnterFallbackModeAfterStartup();
+  static void OnFallbackTimer(void* arg, grpc_error* error);
+  static void OnFallbackTimerLocked(void* arg, grpc_error* error);
+
+  // Methods for dealing with the balancer call.
+  void StartBalancerCallLocked();
+  void StartBalancerCallRetryTimerLocked();
+  static void OnBalancerCallRetryTimer(void* arg, grpc_error* error);
+  static void OnBalancerCallRetryTimerLocked(void* arg, grpc_error* error);
+
+  // Methods for dealing with the child policy.
+  grpc_channel_args* CreateChildPolicyArgsLocked(
+      bool is_backend_from_grpclb_load_balancer);
+  OrphanablePtr<LoadBalancingPolicy> CreateChildPolicyLocked(
+      const grpc_channel_args* args);
+  void CreateOrUpdateChildPolicyLocked();
+
+  // Who the client is trying to communicate with.
+  const char* server_name_ = nullptr;
+
+  // Current channel args from the resolver.
+  grpc_channel_args* args_ = nullptr;
+
+  // Internal state.
+  bool shutting_down_ = false;
+
+  // The channel for communicating with the LB server.
+  grpc_channel* lb_channel_ = nullptr;
+  // Response generator to inject address updates into lb_channel_.
+  RefCountedPtr<FakeResolverResponseGenerator> response_generator_;
+
+  // The data associated with the current LB call. It holds a ref to this LB
+  // policy. It's initialized every time we query for backends. It's reset to
+  // NULL whenever the current LB call is no longer needed (e.g., the LB policy
+  // is shutting down, or the LB call has ended). A non-NULL lb_calld_ always
+  // contains a non-NULL lb_call_.
+  OrphanablePtr<BalancerCallState> lb_calld_;
+  // Timeout in milliseconds for the LB call. 0 means no deadline.
+  int lb_call_timeout_ms_ = 0;
+  // Balancer call retry state.
+  BackOff lb_call_backoff_;
+  bool retry_timer_callback_pending_ = false;
+  grpc_timer lb_call_retry_timer_;
+  grpc_closure lb_on_call_retry_;
+
+  // The deserialized response from the balancer. May be nullptr until one
+  // such response has arrived.
+  RefCountedPtr<Serverlist> serverlist_;
+
+  // Whether we're in fallback mode.
+  bool fallback_mode_ = false;
+  // The backend addresses from the resolver.
+  ServerAddressList fallback_backend_addresses_;
+  // State for fallback-at-startup checks.
+  // Timeout after startup after which we will go into fallback mode if
+  // we have not received a serverlist from the balancer.
+  int fallback_at_startup_timeout_ = 0;
+  bool fallback_at_startup_checks_pending_ = false;
+  grpc_timer lb_fallback_timer_;
+  grpc_closure lb_on_fallback_;
+  grpc_connectivity_state lb_channel_connectivity_ = GRPC_CHANNEL_IDLE;
+  grpc_closure lb_channel_on_connectivity_changed_;
+
+  // The child policy to use for the backends.
+  OrphanablePtr<LoadBalancingPolicy> child_policy_;
+  // The child policy config.
+  RefCountedPtr<LoadBalancingPolicy::Config> child_policy_config_;
+  // Child policy in state READY.
+  bool child_policy_ready_ = false;
+};
+
+//
+// GrpcLb::Serverlist
+//
+
+bool GrpcLb::Serverlist::operator==(const Serverlist& other) const {
+  return serverlist_ == other.serverlist_;
+}
+
+void ParseServer(const GrpcLbServer& server, grpc_resolved_address* addr) {
+  memset(addr, 0, sizeof(*addr));
+  if (server.drop) return;
+  const uint16_t netorder_port = grpc_htons((uint16_t)server.port);
+  /* the addresses are given in binary format (a in(6)_addr struct) in
+   * server->ip_address.bytes. */
+  if (server.ip_size == 4) {
+    addr->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
+    grpc_sockaddr_in* addr4 = reinterpret_cast<grpc_sockaddr_in*>(&addr->addr);
+    addr4->sin_family = GRPC_AF_INET;
+    memcpy(&addr4->sin_addr, server.ip_addr, server.ip_size);
+    addr4->sin_port = netorder_port;
+  } else if (server.ip_size == 16) {
+    addr->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in6));
+    grpc_sockaddr_in6* addr6 = (grpc_sockaddr_in6*)&addr->addr;
+    addr6->sin6_family = GRPC_AF_INET6;
+    memcpy(&addr6->sin6_addr, server.ip_addr, server.ip_size);
+    addr6->sin6_port = netorder_port;
+  }
+}
+
+grpc_core::UniquePtr<char> GrpcLb::Serverlist::AsText() const {
+  gpr_strvec entries;
+  gpr_strvec_init(&entries);
+  for (size_t i = 0; i < serverlist_.size(); ++i) {
+    const GrpcLbServer& server = serverlist_[i];
+    char* ipport;
+    if (server.drop) {
+      ipport = gpr_strdup("(drop)");
+    } else {
+      grpc_resolved_address addr;
+      ParseServer(server, &addr);
+      grpc_sockaddr_to_string(&ipport, &addr, false);
+    }
+    char* entry;
+    gpr_asprintf(&entry, "  %" PRIuPTR ": %s token=%s\n", i, ipport,
+                 server.load_balance_token);
+    gpr_free(ipport);
+    gpr_strvec_add(&entries, entry);
+  }
+  grpc_core::UniquePtr<char> result(gpr_strvec_flatten(&entries, nullptr));
+  gpr_strvec_destroy(&entries);
+  return result;
+}
+
+// vtables for channel args for LB token and client stats.
+void* lb_token_copy(void* token) {
+  return gpr_strdup(static_cast<char*>(token));
+}
+void lb_token_destroy(void* token) { gpr_free(token); }
+void* client_stats_copy(void* p) {
+  GrpcLbClientStats* client_stats = static_cast<GrpcLbClientStats*>(p);
+  client_stats->Ref().release();
+  return p;
+}
+void client_stats_destroy(void* p) {
+  GrpcLbClientStats* client_stats = static_cast<GrpcLbClientStats*>(p);
+  client_stats->Unref();
+}
+int equal_cmp(void* /*p1*/, void* /*p2*/) {
+  // Always indicate a match, since we don't want this channel arg to
+  // affect the subchannel's key in the index.
+  // TODO(roth): Is this right?  This does prevent us from needlessly
+  // recreating the subchannel whenever the LB token or client stats
+  // changes (i.e., when the balancer call is terminated and reestablished).
+  // However, it means that we don't actually recreate the subchannel,
+  // which means that we won't ever switch over to using the new LB
+  // token or client stats.  A better approach might be to find somewhere
+  // other than the subchannel args to store the LB token and client
+  // stats.  They could be stored in a map and then looked up for each
+  // call. Or we could do something more complicated whereby
+  // we create our own subchannel wrapper to store them, although that would
+  // involve a lot of refcounting overhead.
+  // Given that we're trying to move from grpclb to xds at this point,
+  // and that no one has actually reported any problems with this, we
+  // probably won't bother fixing this at this point.
+  return 0;
+}
+const grpc_arg_pointer_vtable lb_token_arg_vtable = {
+    lb_token_copy, lb_token_destroy, equal_cmp};
+const grpc_arg_pointer_vtable client_stats_arg_vtable = {
+    client_stats_copy, client_stats_destroy, equal_cmp};
+
+bool IsServerValid(const GrpcLbServer& server, size_t idx, bool log) {
+  if (server.drop) return false;
+  if (GPR_UNLIKELY(server.port >> 16 != 0)) {
+    if (log) {
+      gpr_log(GPR_ERROR,
+              "Invalid port '%d' at index %lu of serverlist. Ignoring.",
+              server.port, (unsigned long)idx);
+    }
+    return false;
+  }
+  if (GPR_UNLIKELY(server.ip_size != 4 && server.ip_size != 16)) {
+    if (log) {
+      gpr_log(GPR_ERROR,
+              "Expected IP to be 4 or 16 bytes, got %d at index %lu of "
+              "serverlist. Ignoring",
+              server.ip_size, (unsigned long)idx);
+    }
+    return false;
+  }
+  return true;
+}
+
+// Returns addresses extracted from the serverlist.
+ServerAddressList GrpcLb::Serverlist::GetServerAddressList(
+    GrpcLbClientStats* client_stats) const {
+  ServerAddressList addresses;
+  for (size_t i = 0; i < serverlist_.size(); ++i) {
+    const GrpcLbServer& server = serverlist_[i];
+    if (!IsServerValid(server, i, false)) continue;
+    // Address processing.
+    grpc_resolved_address addr;
+    ParseServer(server, &addr);
+    // LB token processing.
+    char lb_token[GPR_ARRAY_SIZE(server.load_balance_token) + 1];
+    if (server.load_balance_token[0] != 0) {
+      const size_t lb_token_max_length =
+          GPR_ARRAY_SIZE(server.load_balance_token);
+      const size_t lb_token_length =
+          strnlen(server.load_balance_token, lb_token_max_length);
+      memcpy(lb_token, server.load_balance_token, lb_token_length);
+      lb_token[lb_token_length] = '\0';
+    } else {
+      char* uri = grpc_sockaddr_to_uri(&addr);
+      gpr_log(GPR_INFO,
+              "Missing LB token for backend address '%s'. The empty token will "
+              "be used instead",
+              uri);
+      gpr_free(uri);
+      lb_token[0] = '\0';
+    }
+    // Add address.
+    InlinedVector<grpc_arg, 2> args_to_add;
+    args_to_add.emplace_back(grpc_channel_arg_pointer_create(
+        const_cast<char*>(GRPC_ARG_GRPCLB_ADDRESS_LB_TOKEN), lb_token,
+        &lb_token_arg_vtable));
+    if (client_stats != nullptr) {
+      args_to_add.emplace_back(grpc_channel_arg_pointer_create(
+          const_cast<char*>(GRPC_ARG_GRPCLB_ADDRESS_CLIENT_STATS), client_stats,
+          &client_stats_arg_vtable));
+    }
+    grpc_channel_args* args = grpc_channel_args_copy_and_add(
+        nullptr, args_to_add.data(), args_to_add.size());
+    addresses.emplace_back(addr, args);
+  }
+  return addresses;
+}
+
+bool GrpcLb::Serverlist::ContainsAllDropEntries() const {
+  if (serverlist_.empty()) return false;
+  for (const GrpcLbServer& server : serverlist_) {
+    if (!server.drop) return false;
+  }
+  return true;
+}
+
+const char* GrpcLb::Serverlist::ShouldDrop() {
+  if (serverlist_.empty()) return nullptr;
+  GrpcLbServer& server = serverlist_[drop_index_];
+  drop_index_ = (drop_index_ + 1) % serverlist_.size();
+  return server.drop ? server.load_balance_token : nullptr;
+}
+
+//
+// GrpcLb::Picker
+//
+
+GrpcLb::PickResult GrpcLb::Picker::Pick(PickArgs args) {
+  PickResult result;
+  // Check if we should drop the call.
+  const char* drop_token = serverlist_->ShouldDrop();
+  if (drop_token != nullptr) {
+    // Update client load reporting stats to indicate the number of
+    // dropped calls.  Note that we have to do this here instead of in
+    // the client_load_reporting filter, because we do not create a
+    // subchannel call (and therefore no client_load_reporting filter)
+    // for dropped calls.
+    if (client_stats_ != nullptr) {
+      client_stats_->AddCallDropped(drop_token);
+    }
+    result.type = PickResult::PICK_COMPLETE;
+    return result;
+  }
+  // Forward pick to child policy.
+  result = child_picker_->Pick(args);
+  // If pick succeeded, add LB token to initial metadata.
+  if (result.type == PickResult::PICK_COMPLETE &&
+      result.subchannel != nullptr) {
+    // Encode client stats object into metadata for use by
+    // client_load_reporting filter.
+    const grpc_arg* arg =
+        grpc_channel_args_find(result.subchannel->channel_args(),
+                               GRPC_ARG_GRPCLB_ADDRESS_CLIENT_STATS);
+    if (arg != nullptr && arg->type == GRPC_ARG_POINTER &&
+        arg->value.pointer.p != nullptr) {
+      GrpcLbClientStats* client_stats =
+          static_cast<GrpcLbClientStats*>(arg->value.pointer.p);
+      client_stats->Ref().release();  // Ref passed via metadata.
+      // The metadata value is a hack: we pretend the pointer points to
+      // a string and rely on the client_load_reporting filter to know
+      // how to interpret it.
+      args.initial_metadata->Add(
+          kGrpcLbClientStatsMetadataKey,
+          StringView(reinterpret_cast<const char*>(client_stats), 0));
+      // Update calls-started.
+      client_stats->AddCallStarted();
+    }
+    // Encode the LB token in metadata.
+    arg = grpc_channel_args_find(result.subchannel->channel_args(),
+                                 GRPC_ARG_GRPCLB_ADDRESS_LB_TOKEN);
+    if (arg == nullptr) {
+      gpr_log(GPR_ERROR, "[grpclb %p picker %p] No LB token for subchannel %p",
+              parent_, this, result.subchannel.get());
+      abort();
+    }
+    args.initial_metadata->Add(kGrpcLbLbTokenMetadataKey,
+                               static_cast<char*>(arg->value.pointer.p));
+  }
+  return result;
+}
+
+//
+// GrpcLb::Helper
+//
+
+RefCountedPtr<SubchannelInterface> GrpcLb::Helper::CreateSubchannel(
+    const grpc_channel_args& args) {
+  if (parent_->shutting_down_) return nullptr;
+  return parent_->channel_control_helper()->CreateSubchannel(args);
+}
+
+void GrpcLb::Helper::UpdateState(grpc_connectivity_state state,
+                                 std::unique_ptr<SubchannelPicker> picker) {
+  if (parent_->shutting_down_) return;
+  // Record whether child policy reports READY.
+  parent_->child_policy_ready_ = state == GRPC_CHANNEL_READY;
+  // Enter fallback mode if needed.
+  parent_->MaybeEnterFallbackModeAfterStartup();
+  // There are three cases to consider here:
+  // 1. We're in fallback mode.  In this case, we're always going to use
+  //    the child policy's result, so we pass its picker through as-is.
+  // 2. The serverlist contains only drop entries.  In this case, we
+  //    want to use our own picker so that we can return the drops.
+  // 3. Not in fallback mode and serverlist is not all drops (i.e., it
+  //    may be empty or contain at least one backend address).  There are
+  //    two sub-cases:
+  //    a. The child policy is reporting state READY.  In this case, we wrap
+  //       the child's picker in our own, so that we can handle drops and LB
+  //       token metadata for each pick.
+  //    b. The child policy is reporting a state other than READY.  In this
+  //       case, we don't want to use our own picker, because we don't want
+  //       to process drops for picks that yield a QUEUE result; this would
+  //       result in dropping too many calls, since we will see the
+  //       queued picks multiple times, and we'd consider each one a
+  //       separate call for the drop calculation.
+  //
+  // Cases 1 and 3b: return picker from the child policy as-is.
+  if (parent_->serverlist_ == nullptr ||
+      (!parent_->serverlist_->ContainsAllDropEntries() &&
+       state != GRPC_CHANNEL_READY)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+      gpr_log(GPR_INFO,
+              "[grpclb %p helper %p] state=%s passing child picker %p as-is",
+              parent_.get(), this, ConnectivityStateName(state), picker.get());
+    }
+    parent_->channel_control_helper()->UpdateState(state, std::move(picker));
+    return;
+  }
+  // Cases 2 and 3a: wrap picker from the child in our own picker.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "[grpclb %p helper %p] state=%s wrapping child picker %p",
+            parent_.get(), this, ConnectivityStateName(state), picker.get());
+  }
+  RefCountedPtr<GrpcLbClientStats> client_stats;
+  if (parent_->lb_calld_ != nullptr &&
+      parent_->lb_calld_->client_stats() != nullptr) {
+    client_stats = parent_->lb_calld_->client_stats()->Ref();
+  }
+  parent_->channel_control_helper()->UpdateState(
+      state,
+      absl::make_unique<Picker>(parent_.get(), parent_->serverlist_,
+                                std::move(picker), std::move(client_stats)));
+}
+
+void GrpcLb::Helper::RequestReresolution() {
+  if (parent_->shutting_down_) return;
+  // If we are talking to a balancer, we expect to get updated addresses
+  // from the balancer, so we can ignore the re-resolution request from
+  // the child policy. Otherwise, pass the re-resolution request up to the
+  // channel.
+  if (parent_->lb_calld_ == nullptr ||
+      !parent_->lb_calld_->seen_initial_response()) {
+    parent_->channel_control_helper()->RequestReresolution();
+  }
+}
+
+void GrpcLb::Helper::AddTraceEvent(TraceSeverity severity, StringView message) {
+  if (parent_->shutting_down_) return;
+  parent_->channel_control_helper()->AddTraceEvent(severity, message);
+}
+
+//
+// GrpcLb::BalancerCallState
+//
+
+GrpcLb::BalancerCallState::BalancerCallState(
+    RefCountedPtr<LoadBalancingPolicy> parent_grpclb_policy)
+    : InternallyRefCounted<BalancerCallState>(&grpc_lb_glb_trace),
+      grpclb_policy_(std::move(parent_grpclb_policy)) {
+  GPR_ASSERT(grpclb_policy_ != nullptr);
+  GPR_ASSERT(!grpclb_policy()->shutting_down_);
+  // Init the LB call. Note that the LB call will progress every time there's
+  // activity in grpclb_policy_->interested_parties(), which is comprised of
+  // the polling entities from client_channel.
+  GPR_ASSERT(grpclb_policy()->server_name_ != nullptr);
+  GPR_ASSERT(grpclb_policy()->server_name_[0] != '\0');
+  const grpc_millis deadline =
+      grpclb_policy()->lb_call_timeout_ms_ == 0
+          ? GRPC_MILLIS_INF_FUTURE
+          : ExecCtx::Get()->Now() + grpclb_policy()->lb_call_timeout_ms_;
+  lb_call_ = grpc_channel_create_pollset_set_call(
+      grpclb_policy()->lb_channel_, nullptr, GRPC_PROPAGATE_DEFAULTS,
+      grpclb_policy_->interested_parties(),
+      GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD,
+      nullptr, deadline, nullptr);
+  // Init the LB call request payload.
+  upb::Arena arena;
+  grpc_slice request_payload_slice =
+      GrpcLbRequestCreate(grpclb_policy()->server_name_, arena.ptr());
+  send_message_payload_ =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_slice_unref_internal(request_payload_slice);
+  // Init other data associated with the LB call.
+  grpc_metadata_array_init(&lb_initial_metadata_recv_);
+  grpc_metadata_array_init(&lb_trailing_metadata_recv_);
+}
+
+GrpcLb::BalancerCallState::~BalancerCallState() {
+  GPR_ASSERT(lb_call_ != nullptr);
+  grpc_call_unref(lb_call_);
+  grpc_metadata_array_destroy(&lb_initial_metadata_recv_);
+  grpc_metadata_array_destroy(&lb_trailing_metadata_recv_);
+  grpc_byte_buffer_destroy(send_message_payload_);
+  grpc_byte_buffer_destroy(recv_message_payload_);
+  grpc_slice_unref_internal(lb_call_status_details_);
+}
+
+void GrpcLb::BalancerCallState::Orphan() {
+  GPR_ASSERT(lb_call_ != nullptr);
+  // If we are here because grpclb_policy wants to cancel the call,
+  // lb_on_balancer_status_received_ will complete the cancellation and clean
+  // up. Otherwise, we are here because grpclb_policy has to orphan a failed
+  // call, then the following cancellation will be a no-op.
+  grpc_call_cancel(lb_call_, nullptr);
+  if (client_load_report_timer_callback_pending_) {
+    grpc_timer_cancel(&client_load_report_timer_);
+  }
+  // Note that the initial ref is hold by lb_on_balancer_status_received_
+  // instead of the caller of this function. So the corresponding unref happens
+  // in lb_on_balancer_status_received_ instead of here.
+}
+
+void GrpcLb::BalancerCallState::StartQuery() {
+  GPR_ASSERT(lb_call_ != nullptr);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "[grpclb %p] lb_calld=%p: Starting LB call %p",
+            grpclb_policy_.get(), this, lb_call_);
+  }
+  // Create the ops.
+  grpc_call_error call_error;
+  grpc_op ops[3];
+  memset(ops, 0, sizeof(ops));
+  // Op: send initial metadata.
+  grpc_op* op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY |
+              GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET;
+  op->reserved = nullptr;
+  op++;
+  // Op: send request message.
+  GPR_ASSERT(send_message_payload_ != nullptr);
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = send_message_payload_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // TODO(roth): We currently track this ref manually.  Once the
+  // ClosureRef API is ready, we should pass the RefCountedPtr<> along
+  // with the callback.
+  auto self = Ref(DEBUG_LOCATION, "on_initial_request_sent");
+  self.release();
+  GRPC_CLOSURE_INIT(&lb_on_initial_request_sent_, OnInitialRequestSent, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(
+      lb_call_, ops, (size_t)(op - ops), &lb_on_initial_request_sent_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: recv initial metadata.
+  op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata =
+      &lb_initial_metadata_recv_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // Op: recv response.
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &recv_message_payload_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // TODO(roth): We currently track this ref manually.  Once the
+  // ClosureRef API is ready, we should pass the RefCountedPtr<> along
+  // with the callback.
+  self = Ref(DEBUG_LOCATION, "on_message_received");
+  self.release();
+  GRPC_CLOSURE_INIT(&lb_on_balancer_message_received_,
+                    OnBalancerMessageReceived, this, grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(
+      lb_call_, ops, (size_t)(op - ops), &lb_on_balancer_message_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: recv server status.
+  op = ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata =
+      &lb_trailing_metadata_recv_;
+  op->data.recv_status_on_client.status = &lb_call_status_;
+  op->data.recv_status_on_client.status_details = &lb_call_status_details_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // This callback signals the end of the LB call, so it relies on the initial
+  // ref instead of a new ref. When it's invoked, it's the initial ref that is
+  // unreffed.
+  GRPC_CLOSURE_INIT(&lb_on_balancer_status_received_, OnBalancerStatusReceived,
+                    this, grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(
+      lb_call_, ops, (size_t)(op - ops), &lb_on_balancer_status_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+void GrpcLb::BalancerCallState::ScheduleNextClientLoadReportLocked() {
+  const grpc_millis next_client_load_report_time =
+      ExecCtx::Get()->Now() + client_stats_report_interval_;
+  GRPC_CLOSURE_INIT(&client_load_report_closure_, MaybeSendClientLoadReport,
+                    this, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&client_load_report_timer_, next_client_load_report_time,
+                  &client_load_report_closure_);
+  client_load_report_timer_callback_pending_ = true;
+}
+
+void GrpcLb::BalancerCallState::MaybeSendClientLoadReport(void* arg,
+                                                          grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  lb_calld->grpclb_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&lb_calld->client_load_report_closure_,
+                        MaybeSendClientLoadReportLocked, lb_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::BalancerCallState::MaybeSendClientLoadReportLocked(
+    void* arg, grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  GrpcLb* grpclb_policy = lb_calld->grpclb_policy();
+  lb_calld->client_load_report_timer_callback_pending_ = false;
+  if (error != GRPC_ERROR_NONE || lb_calld != grpclb_policy->lb_calld_.get()) {
+    lb_calld->Unref(DEBUG_LOCATION, "client_load_report");
+    return;
+  }
+  // If we've already sent the initial request, then we can go ahead and send
+  // the load report. Otherwise, we need to wait until the initial request has
+  // been sent to send this (see OnInitialRequestSentLocked()).
+  if (lb_calld->send_message_payload_ == nullptr) {
+    lb_calld->SendClientLoadReportLocked();
+  } else {
+    lb_calld->client_load_report_is_due_ = true;
+  }
+}
+
+void GrpcLb::BalancerCallState::SendClientLoadReportLocked() {
+  // Construct message payload.
+  GPR_ASSERT(send_message_payload_ == nullptr);
+  // Get snapshot of stats.
+  int64_t num_calls_started;
+  int64_t num_calls_finished;
+  int64_t num_calls_finished_with_client_failed_to_send;
+  int64_t num_calls_finished_known_received;
+  std::unique_ptr<GrpcLbClientStats::DroppedCallCounts> drop_token_counts;
+  client_stats_->Get(&num_calls_started, &num_calls_finished,
+                     &num_calls_finished_with_client_failed_to_send,
+                     &num_calls_finished_known_received, &drop_token_counts);
+  // Skip client load report if the counters were all zero in the last
+  // report and they are still zero in this one.
+  if (num_calls_started == 0 && num_calls_finished == 0 &&
+      num_calls_finished_with_client_failed_to_send == 0 &&
+      num_calls_finished_known_received == 0 &&
+      (drop_token_counts == nullptr || drop_token_counts->size() == 0)) {
+    if (last_client_load_report_counters_were_zero_) {
+      ScheduleNextClientLoadReportLocked();
+      return;
+    }
+    last_client_load_report_counters_were_zero_ = true;
+  } else {
+    last_client_load_report_counters_were_zero_ = false;
+  }
+  // Populate load report.
+  upb::Arena arena;
+  grpc_slice request_payload_slice = GrpcLbLoadReportRequestCreate(
+      num_calls_started, num_calls_finished,
+      num_calls_finished_with_client_failed_to_send,
+      num_calls_finished_known_received, drop_token_counts.get(), arena.ptr());
+  send_message_payload_ =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_slice_unref_internal(request_payload_slice);
+  // Send the report.
+  grpc_op op;
+  memset(&op, 0, sizeof(op));
+  op.op = GRPC_OP_SEND_MESSAGE;
+  op.data.send_message.send_message = send_message_payload_;
+  GRPC_CLOSURE_INIT(&client_load_report_closure_, ClientLoadReportDone, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      lb_call_, &op, 1, &client_load_report_closure_);
+  if (GPR_UNLIKELY(call_error != GRPC_CALL_OK)) {
+    gpr_log(GPR_ERROR,
+            "[grpclb %p] lb_calld=%p call_error=%d sending client load report",
+            grpclb_policy_.get(), this, call_error);
+    GPR_ASSERT(GRPC_CALL_OK == call_error);
+  }
+}
+
+void GrpcLb::BalancerCallState::ClientLoadReportDone(void* arg,
+                                                     grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  lb_calld->grpclb_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&lb_calld->client_load_report_closure_,
+                        ClientLoadReportDoneLocked, lb_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::BalancerCallState::ClientLoadReportDoneLocked(void* arg,
+                                                           grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  GrpcLb* grpclb_policy = lb_calld->grpclb_policy();
+  grpc_byte_buffer_destroy(lb_calld->send_message_payload_);
+  lb_calld->send_message_payload_ = nullptr;
+  if (error != GRPC_ERROR_NONE || lb_calld != grpclb_policy->lb_calld_.get()) {
+    lb_calld->Unref(DEBUG_LOCATION, "client_load_report");
+    return;
+  }
+  lb_calld->ScheduleNextClientLoadReportLocked();
+}
+
+void GrpcLb::BalancerCallState::OnInitialRequestSent(void* arg,
+                                                     grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  lb_calld->grpclb_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&lb_calld->lb_on_initial_request_sent_,
+                        OnInitialRequestSentLocked, lb_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::BalancerCallState::OnInitialRequestSentLocked(
+    void* arg, grpc_error* /*error*/) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  grpc_byte_buffer_destroy(lb_calld->send_message_payload_);
+  lb_calld->send_message_payload_ = nullptr;
+  // If we attempted to send a client load report before the initial request was
+  // sent (and this lb_calld is still in use), send the load report now.
+  if (lb_calld->client_load_report_is_due_ &&
+      lb_calld == lb_calld->grpclb_policy()->lb_calld_.get()) {
+    lb_calld->SendClientLoadReportLocked();
+    lb_calld->client_load_report_is_due_ = false;
+  }
+  lb_calld->Unref(DEBUG_LOCATION, "on_initial_request_sent");
+}
+
+void GrpcLb::BalancerCallState::OnBalancerMessageReceived(void* arg,
+                                                          grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  lb_calld->grpclb_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&lb_calld->lb_on_balancer_message_received_,
+                        OnBalancerMessageReceivedLocked, lb_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::BalancerCallState::OnBalancerMessageReceivedLocked(
+    void* arg, grpc_error* /*error*/) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  GrpcLb* grpclb_policy = lb_calld->grpclb_policy();
+  // Null payload means the LB call was cancelled.
+  if (lb_calld != grpclb_policy->lb_calld_.get() ||
+      lb_calld->recv_message_payload_ == nullptr) {
+    lb_calld->Unref(DEBUG_LOCATION, "on_message_received");
+    return;
+  }
+  grpc_byte_buffer_reader bbr;
+  grpc_byte_buffer_reader_init(&bbr, lb_calld->recv_message_payload_);
+  grpc_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+  grpc_byte_buffer_reader_destroy(&bbr);
+  grpc_byte_buffer_destroy(lb_calld->recv_message_payload_);
+  lb_calld->recv_message_payload_ = nullptr;
+  GrpcLbResponse response;
+  upb::Arena arena;
+  if (!GrpcLbResponseParse(response_slice, arena.ptr(), &response) ||
+      (response.type == response.INITIAL && lb_calld->seen_initial_response_)) {
+    char* response_slice_str =
+        grpc_dump_slice(response_slice, GPR_DUMP_ASCII | GPR_DUMP_HEX);
+    gpr_log(GPR_ERROR,
+            "[grpclb %p] lb_calld=%p: Invalid LB response received: '%s'. "
+            "Ignoring.",
+            grpclb_policy, lb_calld, response_slice_str);
+    gpr_free(response_slice_str);
+  } else {
+    switch (response.type) {
+      case response.INITIAL: {
+        if (response.client_stats_report_interval != 0) {
+          lb_calld->client_stats_report_interval_ =
+              GPR_MAX(GPR_MS_PER_SEC, response.client_stats_report_interval);
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+            gpr_log(GPR_INFO,
+                    "[grpclb %p] lb_calld=%p: Received initial LB response "
+                    "message; client load reporting interval = %" PRId64
+                    " milliseconds",
+                    grpclb_policy, lb_calld,
+                    lb_calld->client_stats_report_interval_);
+          }
+        } else if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+          gpr_log(GPR_INFO,
+                  "[grpclb %p] lb_calld=%p: Received initial LB response "
+                  "message; client load reporting NOT enabled",
+                  grpclb_policy, lb_calld);
+        }
+        lb_calld->seen_initial_response_ = true;
+        break;
+      }
+      case response.SERVERLIST: {
+        GPR_ASSERT(lb_calld->lb_call_ != nullptr);
+        auto serverlist_wrapper =
+            MakeRefCounted<Serverlist>(std::move(response.serverlist));
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+          grpc_core::UniquePtr<char> serverlist_text =
+              serverlist_wrapper->AsText();
+          gpr_log(GPR_INFO,
+                  "[grpclb %p] lb_calld=%p: Serverlist with %" PRIuPTR
+                  " servers received:\n%s",
+                  grpclb_policy, lb_calld,
+                  serverlist_wrapper->serverlist().size(),
+                  serverlist_text.get());
+        }
+        lb_calld->seen_serverlist_ = true;
+        // Start sending client load report only after we start using the
+        // serverlist returned from the current LB call.
+        if (lb_calld->client_stats_report_interval_ > 0 &&
+            lb_calld->client_stats_ == nullptr) {
+          lb_calld->client_stats_ = MakeRefCounted<GrpcLbClientStats>();
+          // Ref held by callback.
+          lb_calld->Ref(DEBUG_LOCATION, "client_load_report").release();
+          lb_calld->ScheduleNextClientLoadReportLocked();
+        }
+        // Check if the serverlist differs from the previous one.
+        if (grpclb_policy->serverlist_ != nullptr &&
+            *grpclb_policy->serverlist_ == *serverlist_wrapper) {
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+            gpr_log(GPR_INFO,
+                    "[grpclb %p] lb_calld=%p: Incoming server list identical "
+                    "to current, ignoring.",
+                    grpclb_policy, lb_calld);
+          }
+        } else {  // New serverlist.
+          // Dispose of the fallback.
+          // TODO(roth): Ideally, we should stay in fallback mode until we
+          // know that we can reach at least one of the backends in the new
+          // serverlist.  Unfortunately, we can't do that, since we need to
+          // send the new addresses to the child policy in order to determine
+          // if they are reachable, and if we don't exit fallback mode now,
+          // CreateOrUpdateChildPolicyLocked() will use the fallback
+          // addresses instead of the addresses from the new serverlist.
+          // However, if we can't reach any of the servers in the new
+          // serverlist, then the child policy will never switch away from
+          // the fallback addresses, but the grpclb policy will still think
+          // that we're not in fallback mode, which means that we won't send
+          // updates to the child policy when the fallback addresses are
+          // updated by the resolver.  This is sub-optimal, but the only way
+          // to fix it is to maintain a completely separate child policy for
+          // fallback mode, and that's more work than we want to put into
+          // the grpclb implementation at this point, since we're deprecating
+          // it in favor of the xds policy.  We will implement this the
+          // right way in the xds policy instead.
+          if (grpclb_policy->fallback_mode_) {
+            gpr_log(GPR_INFO,
+                    "[grpclb %p] Received response from balancer; exiting "
+                    "fallback mode",
+                    grpclb_policy);
+            grpclb_policy->fallback_mode_ = false;
+          }
+          if (grpclb_policy->fallback_at_startup_checks_pending_) {
+            grpclb_policy->fallback_at_startup_checks_pending_ = false;
+            grpc_timer_cancel(&grpclb_policy->lb_fallback_timer_);
+            grpclb_policy->CancelBalancerChannelConnectivityWatchLocked();
+          }
+          // Update the serverlist in the GrpcLb instance. This serverlist
+          // instance will be destroyed either upon the next update or when the
+          // GrpcLb instance is destroyed.
+          grpclb_policy->serverlist_ = std::move(serverlist_wrapper);
+          grpclb_policy->CreateOrUpdateChildPolicyLocked();
+        }
+        break;
+      }
+      case response.FALLBACK: {
+        if (!grpclb_policy->fallback_mode_) {
+          gpr_log(GPR_INFO,
+                  "[grpclb %p] Entering fallback mode as requested by balancer",
+                  grpclb_policy);
+          if (grpclb_policy->fallback_at_startup_checks_pending_) {
+            grpclb_policy->fallback_at_startup_checks_pending_ = false;
+            grpc_timer_cancel(&grpclb_policy->lb_fallback_timer_);
+            grpclb_policy->CancelBalancerChannelConnectivityWatchLocked();
+          }
+          grpclb_policy->fallback_mode_ = true;
+          grpclb_policy->CreateOrUpdateChildPolicyLocked();
+          // Reset serverlist, so that if the balancer exits fallback
+          // mode by sending the same serverlist we were previously
+          // using, we don't incorrectly ignore it as a duplicate.
+          grpclb_policy->serverlist_.reset();
+        }
+        break;
+      }
+    }
+  }
+  grpc_slice_unref_internal(response_slice);
+  if (!grpclb_policy->shutting_down_) {
+    // Keep listening for serverlist updates.
+    grpc_op op;
+    memset(&op, 0, sizeof(op));
+    op.op = GRPC_OP_RECV_MESSAGE;
+    op.data.recv_message.recv_message = &lb_calld->recv_message_payload_;
+    op.flags = 0;
+    op.reserved = nullptr;
+    // Reuse the "OnBalancerMessageReceivedLocked" ref taken in StartQuery().
+    GRPC_CLOSURE_INIT(&lb_calld->lb_on_balancer_message_received_,
+                      GrpcLb::BalancerCallState::OnBalancerMessageReceived,
+                      lb_calld, grpc_schedule_on_exec_ctx);
+    const grpc_call_error call_error = grpc_call_start_batch_and_execute(
+        lb_calld->lb_call_, &op, 1,
+        &lb_calld->lb_on_balancer_message_received_);
+    GPR_ASSERT(GRPC_CALL_OK == call_error);
+  } else {
+    lb_calld->Unref(DEBUG_LOCATION, "on_message_received+grpclb_shutdown");
+  }
+}
+
+void GrpcLb::BalancerCallState::OnBalancerStatusReceived(void* arg,
+                                                         grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  lb_calld->grpclb_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&lb_calld->lb_on_balancer_status_received_,
+                        OnBalancerStatusReceivedLocked, lb_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::BalancerCallState::OnBalancerStatusReceivedLocked(
+    void* arg, grpc_error* error) {
+  BalancerCallState* lb_calld = static_cast<BalancerCallState*>(arg);
+  GrpcLb* grpclb_policy = lb_calld->grpclb_policy();
+  GPR_ASSERT(lb_calld->lb_call_ != nullptr);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    char* status_details =
+        grpc_slice_to_c_string(lb_calld->lb_call_status_details_);
+    gpr_log(GPR_INFO,
+            "[grpclb %p] lb_calld=%p: Status from LB server received. "
+            "Status = %d, details = '%s', (lb_call: %p), error '%s'",
+            grpclb_policy, lb_calld, lb_calld->lb_call_status_, status_details,
+            lb_calld->lb_call_, grpc_error_string(error));
+    gpr_free(status_details);
+  }
+  // If this lb_calld is still in use, this call ended because of a failure so
+  // we want to retry connecting. Otherwise, we have deliberately ended this
+  // call and no further action is required.
+  if (lb_calld == grpclb_policy->lb_calld_.get()) {
+    // If the fallback-at-startup checks are pending, go into fallback mode
+    // immediately.  This short-circuits the timeout for the fallback-at-startup
+    // case.
+    if (grpclb_policy->fallback_at_startup_checks_pending_) {
+      GPR_ASSERT(!lb_calld->seen_serverlist_);
+      gpr_log(GPR_INFO,
+              "[grpclb %p] Balancer call finished without receiving "
+              "serverlist; entering fallback mode",
+              grpclb_policy);
+      grpclb_policy->fallback_at_startup_checks_pending_ = false;
+      grpc_timer_cancel(&grpclb_policy->lb_fallback_timer_);
+      grpclb_policy->CancelBalancerChannelConnectivityWatchLocked();
+      grpclb_policy->fallback_mode_ = true;
+      grpclb_policy->CreateOrUpdateChildPolicyLocked();
+    } else {
+      // This handles the fallback-after-startup case.
+      grpclb_policy->MaybeEnterFallbackModeAfterStartup();
+    }
+    grpclb_policy->lb_calld_.reset();
+    GPR_ASSERT(!grpclb_policy->shutting_down_);
+    grpclb_policy->channel_control_helper()->RequestReresolution();
+    if (lb_calld->seen_initial_response_) {
+      // If we lose connection to the LB server, reset the backoff and restart
+      // the LB call immediately.
+      grpclb_policy->lb_call_backoff_.Reset();
+      grpclb_policy->StartBalancerCallLocked();
+    } else {
+      // If this LB call fails establishing any connection to the LB server,
+      // retry later.
+      grpclb_policy->StartBalancerCallRetryTimerLocked();
+    }
+  }
+  lb_calld->Unref(DEBUG_LOCATION, "lb_call_ended");
+}
+
+//
+// helper code for creating balancer channel
+//
+
+ServerAddressList ExtractBalancerAddresses(const ServerAddressList& addresses) {
+  ServerAddressList balancer_addresses;
+  for (size_t i = 0; i < addresses.size(); ++i) {
+    if (addresses[i].IsBalancer()) {
+      // Strip out the is_balancer channel arg, since we don't want to
+      // recursively use the grpclb policy in the channel used to talk to
+      // the balancers.  Note that we do NOT strip out the balancer_name
+      // channel arg, since we need that to set the authority correctly
+      // to talk to the balancers.
+      static const char* args_to_remove[] = {
+          GRPC_ARG_ADDRESS_IS_BALANCER,
+      };
+      balancer_addresses.emplace_back(
+          addresses[i].address(),
+          grpc_channel_args_copy_and_remove(addresses[i].args(), args_to_remove,
+                                            GPR_ARRAY_SIZE(args_to_remove)));
+    }
+  }
+  return balancer_addresses;
+}
+
+/* Returns the channel args for the LB channel, used to create a bidirectional
+ * stream for the reception of load balancing updates.
+ *
+ * Inputs:
+ *   - \a addresses: corresponding to the balancers.
+ *   - \a response_generator: in order to propagate updates from the resolver
+ *   above the grpclb policy.
+ *   - \a args: other args inherited from the grpclb policy. */
+grpc_channel_args* BuildBalancerChannelArgs(
+    const ServerAddressList& addresses,
+    FakeResolverResponseGenerator* response_generator,
+    const grpc_channel_args* args) {
+  // Channel args to remove.
+  static const char* args_to_remove[] = {
+      // LB policy name, since we want to use the default (pick_first) in
+      // the LB channel.
+      GRPC_ARG_LB_POLICY_NAME,
+      // Strip out the service config, since we don't want the LB policy
+      // config specified for the parent channel to affect the LB channel.
+      GRPC_ARG_SERVICE_CONFIG,
+      // The channel arg for the server URI, since that will be different for
+      // the LB channel than for the parent channel.  The client channel
+      // factory will re-add this arg with the right value.
+      GRPC_ARG_SERVER_URI,
+      // The fake resolver response generator, because we are replacing it
+      // with the one from the grpclb policy, used to propagate updates to
+      // the LB channel.
+      GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR,
+      // The LB channel should use the authority indicated by the target
+      // authority table (see \a ModifyGrpclbBalancerChannelArgs),
+      // as opposed to the authority from the parent channel.
+      GRPC_ARG_DEFAULT_AUTHORITY,
+      // Just as for \a GRPC_ARG_DEFAULT_AUTHORITY, the LB channel should be
+      // treated as a stand-alone channel and not inherit this argument from the
+      // args of the parent channel.
+      GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,
+      // Don't want to pass down channelz node from parent; the balancer
+      // channel will get its own.
+      GRPC_ARG_CHANNELZ_CHANNEL_NODE,
+  };
+  // Channel args to add.
+  InlinedVector<grpc_arg, 3> args_to_add;
+  // The fake resolver response generator, which we use to inject
+  // address updates into the LB channel.
+  args_to_add.emplace_back(
+      grpc_core::FakeResolverResponseGenerator::MakeChannelArg(
+          response_generator));
+  // A channel arg indicating the target is a grpclb load balancer.
+  args_to_add.emplace_back(grpc_channel_arg_integer_create(
+      const_cast<char*>(GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER), 1));
+  // The parent channel's channelz uuid.
+  channelz::ChannelNode* channelz_node = nullptr;
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_CHANNELZ_CHANNEL_NODE);
+  if (arg != nullptr && arg->type == GRPC_ARG_POINTER &&
+      arg->value.pointer.p != nullptr) {
+    channelz_node = static_cast<channelz::ChannelNode*>(arg->value.pointer.p);
+    args_to_add.emplace_back(
+        channelz::MakeParentUuidArg(channelz_node->uuid()));
+  }
+  // Construct channel args.
+  grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+      args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), args_to_add.data(),
+      args_to_add.size());
+  // Make any necessary modifications for security.
+  return ModifyGrpclbBalancerChannelArgs(addresses, new_args);
+}
+
+//
+// ctor and dtor
+//
+
+GrpcLb::GrpcLb(Args args)
+    : LoadBalancingPolicy(std::move(args)),
+      response_generator_(MakeRefCounted<FakeResolverResponseGenerator>()),
+      lb_call_backoff_(
+          BackOff::Options()
+              .set_initial_backoff(GRPC_GRPCLB_INITIAL_CONNECT_BACKOFF_SECONDS *
+                                   1000)
+              .set_multiplier(GRPC_GRPCLB_RECONNECT_BACKOFF_MULTIPLIER)
+              .set_jitter(GRPC_GRPCLB_RECONNECT_JITTER)
+              .set_max_backoff(GRPC_GRPCLB_RECONNECT_MAX_BACKOFF_SECONDS *
+                               1000)) {
+  // Record server name.
+  const grpc_arg* arg = grpc_channel_args_find(args.args, GRPC_ARG_SERVER_URI);
+  const char* server_uri = grpc_channel_arg_get_string(arg);
+  GPR_ASSERT(server_uri != nullptr);
+  grpc_uri* uri = grpc_uri_parse(server_uri, true);
+  GPR_ASSERT(uri->path[0] != '\0');
+  server_name_ = gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO,
+            "[grpclb %p] Will use '%s' as the server name for LB request.",
+            this, server_name_);
+  }
+  grpc_uri_destroy(uri);
+  // Record LB call timeout.
+  arg = grpc_channel_args_find(args.args, GRPC_ARG_GRPCLB_CALL_TIMEOUT_MS);
+  lb_call_timeout_ms_ = grpc_channel_arg_get_integer(arg, {0, 0, INT_MAX});
+  // Record fallback-at-startup timeout.
+  arg = grpc_channel_args_find(args.args, GRPC_ARG_GRPCLB_FALLBACK_TIMEOUT_MS);
+  fallback_at_startup_timeout_ = grpc_channel_arg_get_integer(
+      arg, {GRPC_GRPCLB_DEFAULT_FALLBACK_TIMEOUT_MS, 0, INT_MAX});
+}
+
+GrpcLb::~GrpcLb() {
+  gpr_free((void*)server_name_);
+  grpc_channel_args_destroy(args_);
+}
+
+void GrpcLb::ShutdownLocked() {
+  shutting_down_ = true;
+  lb_calld_.reset();
+  if (retry_timer_callback_pending_) {
+    grpc_timer_cancel(&lb_call_retry_timer_);
+  }
+  if (fallback_at_startup_checks_pending_) {
+    grpc_timer_cancel(&lb_fallback_timer_);
+    CancelBalancerChannelConnectivityWatchLocked();
+  }
+  if (child_policy_ != nullptr) {
+    grpc_pollset_set_del_pollset_set(child_policy_->interested_parties(),
+                                     interested_parties());
+    child_policy_.reset();
+  }
+  // We destroy the LB channel here instead of in our destructor because
+  // destroying the channel triggers a last callback to
+  // OnBalancerChannelConnectivityChangedLocked(), and we need to be
+  // alive when that callback is invoked.
+  if (lb_channel_ != nullptr) {
+    grpc_channel_destroy(lb_channel_);
+    lb_channel_ = nullptr;
+  }
+}
+
+//
+// public methods
+//
+
+void GrpcLb::ResetBackoffLocked() {
+  if (lb_channel_ != nullptr) {
+    grpc_channel_reset_connect_backoff(lb_channel_);
+  }
+  if (child_policy_ != nullptr) {
+    child_policy_->ResetBackoffLocked();
+  }
+}
+
+void GrpcLb::UpdateLocked(UpdateArgs args) {
+  const bool is_initial_update = lb_channel_ == nullptr;
+  auto* grpclb_config = static_cast<const GrpcLbConfig*>(args.config.get());
+  if (grpclb_config != nullptr) {
+    child_policy_config_ = grpclb_config->child_policy();
+  } else {
+    child_policy_config_ = nullptr;
+  }
+  ProcessAddressesAndChannelArgsLocked(args.addresses, *args.args);
+  // Update the existing child policy.
+  if (child_policy_ != nullptr) CreateOrUpdateChildPolicyLocked();
+  // If this is the initial update, start the fallback-at-startup checks
+  // and the balancer call.
+  if (is_initial_update) {
+    fallback_at_startup_checks_pending_ = true;
+    // Start timer.
+    grpc_millis deadline = ExecCtx::Get()->Now() + fallback_at_startup_timeout_;
+    Ref(DEBUG_LOCATION, "on_fallback_timer").release();  // Ref for callback
+    GRPC_CLOSURE_INIT(&lb_on_fallback_, &GrpcLb::OnFallbackTimer, this,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&lb_fallback_timer_, deadline, &lb_on_fallback_);
+    // Start watching the channel's connectivity state.  If the channel
+    // goes into state TRANSIENT_FAILURE before the timer fires, we go into
+    // fallback mode even if the fallback timeout has not elapsed.
+    grpc_channel_element* client_channel_elem = grpc_channel_stack_last_element(
+        grpc_channel_get_channel_stack(lb_channel_));
+    GPR_ASSERT(client_channel_elem->filter == &grpc_client_channel_filter);
+    // Ref held by callback.
+    Ref(DEBUG_LOCATION, "watch_lb_channel_connectivity").release();
+    GRPC_CLOSURE_INIT(&lb_channel_on_connectivity_changed_,
+                      &GrpcLb::OnBalancerChannelConnectivityChanged, this,
+                      grpc_schedule_on_exec_ctx);
+    grpc_client_channel_watch_connectivity_state(
+        client_channel_elem,
+        grpc_polling_entity_create_from_pollset_set(interested_parties()),
+        &lb_channel_connectivity_, &lb_channel_on_connectivity_changed_,
+        nullptr);
+    // Start balancer call.
+    StartBalancerCallLocked();
+  }
+}
+
+//
+// helpers for UpdateLocked()
+//
+
+// Returns the backend addresses extracted from the given addresses.
+ServerAddressList ExtractBackendAddresses(const ServerAddressList& addresses) {
+  static const char* lb_token = "";
+  grpc_arg arg = grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_ARG_GRPCLB_ADDRESS_LB_TOKEN),
+      const_cast<char*>(lb_token), &lb_token_arg_vtable);
+  ServerAddressList backend_addresses;
+  for (size_t i = 0; i < addresses.size(); ++i) {
+    if (!addresses[i].IsBalancer()) {
+      backend_addresses.emplace_back(
+          addresses[i].address(),
+          grpc_channel_args_copy_and_add(addresses[i].args(), &arg, 1));
+    }
+  }
+  return backend_addresses;
+}
+
+void GrpcLb::ProcessAddressesAndChannelArgsLocked(
+    const ServerAddressList& addresses, const grpc_channel_args& args) {
+  // Update fallback address list.
+  fallback_backend_addresses_ = ExtractBackendAddresses(addresses);
+  // Make sure that GRPC_ARG_LB_POLICY_NAME is set in channel args,
+  // since we use this to trigger the client_load_reporting filter.
+  static const char* args_to_remove[] = {GRPC_ARG_LB_POLICY_NAME};
+  grpc_arg new_arg = grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_LB_POLICY_NAME, (char*)"grpclb");
+  grpc_channel_args_destroy(args_);
+  args_ = grpc_channel_args_copy_and_add_and_remove(
+      &args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), &new_arg, 1);
+  // Construct args for balancer channel.
+  ServerAddressList balancer_addresses = ExtractBalancerAddresses(addresses);
+  grpc_channel_args* lb_channel_args = BuildBalancerChannelArgs(
+      balancer_addresses, response_generator_.get(), &args);
+  // Create balancer channel if needed.
+  if (lb_channel_ == nullptr) {
+    char* uri_str;
+    gpr_asprintf(&uri_str, "fake:///%s", server_name_);
+    lb_channel_ = CreateGrpclbBalancerChannel(uri_str, *lb_channel_args);
+    GPR_ASSERT(lb_channel_ != nullptr);
+    gpr_free(uri_str);
+  }
+  // Propagate updates to the LB channel (pick_first) through the fake
+  // resolver.
+  Resolver::Result result;
+  result.addresses = std::move(balancer_addresses);
+  result.args = lb_channel_args;
+  response_generator_->SetResponse(std::move(result));
+}
+
+void GrpcLb::OnBalancerChannelConnectivityChanged(void* arg,
+                                                  grpc_error* error) {
+  GrpcLb* self = static_cast<GrpcLb*>(arg);
+  self->combiner()->Run(
+      GRPC_CLOSURE_INIT(&self->lb_channel_on_connectivity_changed_,
+                        &GrpcLb::OnBalancerChannelConnectivityChangedLocked,
+                        self, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::OnBalancerChannelConnectivityChangedLocked(void* arg,
+                                                        grpc_error* /*error*/) {
+  GrpcLb* self = static_cast<GrpcLb*>(arg);
+  if (!self->shutting_down_ && self->fallback_at_startup_checks_pending_) {
+    if (self->lb_channel_connectivity_ != GRPC_CHANNEL_TRANSIENT_FAILURE) {
+      // Not in TRANSIENT_FAILURE.  Renew connectivity watch.
+      grpc_channel_element* client_channel_elem =
+          grpc_channel_stack_last_element(
+              grpc_channel_get_channel_stack(self->lb_channel_));
+      GPR_ASSERT(client_channel_elem->filter == &grpc_client_channel_filter);
+      GRPC_CLOSURE_INIT(&self->lb_channel_on_connectivity_changed_,
+                        &GrpcLb::OnBalancerChannelConnectivityChanged, self,
+                        grpc_schedule_on_exec_ctx);
+      grpc_client_channel_watch_connectivity_state(
+          client_channel_elem,
+          grpc_polling_entity_create_from_pollset_set(
+              self->interested_parties()),
+          &self->lb_channel_connectivity_,
+          &self->lb_channel_on_connectivity_changed_, nullptr);
+      return;  // Early out so we don't drop the ref below.
+    }
+    // In TRANSIENT_FAILURE.  Cancel the fallback timer and go into
+    // fallback mode immediately.
+    gpr_log(GPR_INFO,
+            "[grpclb %p] balancer channel in state TRANSIENT_FAILURE; "
+            "entering fallback mode",
+            self);
+    self->fallback_at_startup_checks_pending_ = false;
+    grpc_timer_cancel(&self->lb_fallback_timer_);
+    self->fallback_mode_ = true;
+    self->CreateOrUpdateChildPolicyLocked();
+  }
+  // Done watching connectivity state, so drop ref.
+  self->Unref(DEBUG_LOCATION, "watch_lb_channel_connectivity");
+}
+
+void GrpcLb::CancelBalancerChannelConnectivityWatchLocked() {
+  grpc_channel_element* client_channel_elem = grpc_channel_stack_last_element(
+      grpc_channel_get_channel_stack(lb_channel_));
+  GPR_ASSERT(client_channel_elem->filter == &grpc_client_channel_filter);
+  grpc_client_channel_watch_connectivity_state(
+      client_channel_elem,
+      grpc_polling_entity_create_from_pollset_set(interested_parties()),
+      nullptr, &lb_channel_on_connectivity_changed_, nullptr);
+}
+
+//
+// code for balancer channel and call
+//
+
+void GrpcLb::StartBalancerCallLocked() {
+  GPR_ASSERT(lb_channel_ != nullptr);
+  if (shutting_down_) return;
+  // Init the LB call data.
+  GPR_ASSERT(lb_calld_ == nullptr);
+  lb_calld_ = MakeOrphanable<BalancerCallState>(Ref());
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO,
+            "[grpclb %p] Query for backends (lb_channel: %p, lb_calld: %p)",
+            this, lb_channel_, lb_calld_.get());
+  }
+  lb_calld_->StartQuery();
+}
+
+void GrpcLb::StartBalancerCallRetryTimerLocked() {
+  grpc_millis next_try = lb_call_backoff_.NextAttemptTime();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "[grpclb %p] Connection to LB server lost...", this);
+    grpc_millis timeout = next_try - ExecCtx::Get()->Now();
+    if (timeout > 0) {
+      gpr_log(GPR_INFO, "[grpclb %p] ... retry_timer_active in %" PRId64 "ms.",
+              this, timeout);
+    } else {
+      gpr_log(GPR_INFO, "[grpclb %p] ... retry_timer_active immediately.",
+              this);
+    }
+  }
+  // TODO(roth): We currently track this ref manually.  Once the
+  // ClosureRef API is ready, we should pass the RefCountedPtr<> along
+  // with the callback.
+  auto self = Ref(DEBUG_LOCATION, "on_balancer_call_retry_timer");
+  self.release();
+  GRPC_CLOSURE_INIT(&lb_on_call_retry_, &GrpcLb::OnBalancerCallRetryTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  retry_timer_callback_pending_ = true;
+  grpc_timer_init(&lb_call_retry_timer_, next_try, &lb_on_call_retry_);
+}
+
+void GrpcLb::OnBalancerCallRetryTimer(void* arg, grpc_error* error) {
+  GrpcLb* grpclb_policy = static_cast<GrpcLb*>(arg);
+  grpclb_policy->combiner()->Run(
+      GRPC_CLOSURE_INIT(&grpclb_policy->lb_on_call_retry_,
+                        &GrpcLb::OnBalancerCallRetryTimerLocked, grpclb_policy,
+                        nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::OnBalancerCallRetryTimerLocked(void* arg, grpc_error* error) {
+  GrpcLb* grpclb_policy = static_cast<GrpcLb*>(arg);
+  grpclb_policy->retry_timer_callback_pending_ = false;
+  if (!grpclb_policy->shutting_down_ && error == GRPC_ERROR_NONE &&
+      grpclb_policy->lb_calld_ == nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+      gpr_log(GPR_INFO, "[grpclb %p] Restarting call to LB server",
+              grpclb_policy);
+    }
+    grpclb_policy->StartBalancerCallLocked();
+  }
+  grpclb_policy->Unref(DEBUG_LOCATION, "on_balancer_call_retry_timer");
+}
+
+//
+// code for handling fallback mode
+//
+
+void GrpcLb::MaybeEnterFallbackModeAfterStartup() {
+  // Enter fallback mode if all of the following are true:
+  // - We are not currently in fallback mode.
+  // - We are not currently waiting for the initial fallback timeout.
+  // - We are not currently in contact with the balancer.
+  // - The child policy is not in state READY.
+  if (!fallback_mode_ && !fallback_at_startup_checks_pending_ &&
+      (lb_calld_ == nullptr || !lb_calld_->seen_serverlist()) &&
+      !child_policy_ready_) {
+    gpr_log(GPR_INFO,
+            "[grpclb %p] lost contact with balancer and backends from "
+            "most recent serverlist; entering fallback mode",
+            this);
+    fallback_mode_ = true;
+    CreateOrUpdateChildPolicyLocked();
+  }
+}
+
+void GrpcLb::OnFallbackTimer(void* arg, grpc_error* error) {
+  GrpcLb* grpclb_policy = static_cast<GrpcLb*>(arg);
+  grpclb_policy->combiner()->Run(
+      GRPC_CLOSURE_INIT(&grpclb_policy->lb_on_fallback_,
+                        &GrpcLb::OnFallbackTimerLocked, grpclb_policy, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void GrpcLb::OnFallbackTimerLocked(void* arg, grpc_error* error) {
+  GrpcLb* grpclb_policy = static_cast<GrpcLb*>(arg);
+  // If we receive a serverlist after the timer fires but before this callback
+  // actually runs, don't fall back.
+  if (grpclb_policy->fallback_at_startup_checks_pending_ &&
+      !grpclb_policy->shutting_down_ && error == GRPC_ERROR_NONE) {
+    gpr_log(GPR_INFO,
+            "[grpclb %p] No response from balancer after fallback timeout; "
+            "entering fallback mode",
+            grpclb_policy);
+    grpclb_policy->fallback_at_startup_checks_pending_ = false;
+    grpclb_policy->CancelBalancerChannelConnectivityWatchLocked();
+    grpclb_policy->fallback_mode_ = true;
+    grpclb_policy->CreateOrUpdateChildPolicyLocked();
+  }
+  grpclb_policy->Unref(DEBUG_LOCATION, "on_fallback_timer");
+}
+
+//
+// code for interacting with the child policy
+//
+
+grpc_channel_args* GrpcLb::CreateChildPolicyArgsLocked(
+    bool is_backend_from_grpclb_load_balancer) {
+  InlinedVector<grpc_arg, 2> args_to_add;
+  args_to_add.emplace_back(grpc_channel_arg_integer_create(
+      const_cast<char*>(GRPC_ARG_ADDRESS_IS_BACKEND_FROM_GRPCLB_LOAD_BALANCER),
+      is_backend_from_grpclb_load_balancer));
+  if (is_backend_from_grpclb_load_balancer) {
+    args_to_add.emplace_back(grpc_channel_arg_integer_create(
+        const_cast<char*>(GRPC_ARG_INHIBIT_HEALTH_CHECKING), 1));
+  }
+  return grpc_channel_args_copy_and_add(args_, args_to_add.data(),
+                                        args_to_add.size());
+}
+
+OrphanablePtr<LoadBalancingPolicy> GrpcLb::CreateChildPolicyLocked(
+    const grpc_channel_args* args) {
+  LoadBalancingPolicy::Args lb_policy_args;
+  lb_policy_args.combiner = combiner();
+  lb_policy_args.args = args;
+  lb_policy_args.channel_control_helper = absl::make_unique<Helper>(Ref());
+  OrphanablePtr<LoadBalancingPolicy> lb_policy =
+      MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
+                                         &grpc_lb_glb_trace);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "[grpclb %p] Created new child policy handler (%p)", this,
+            lb_policy.get());
+  }
+  // Add the gRPC LB's interested_parties pollset_set to that of the newly
+  // created child policy. This will make the child policy progress upon
+  // activity on gRPC LB, which in turn is tied to the application's call.
+  grpc_pollset_set_add_pollset_set(lb_policy->interested_parties(),
+                                   interested_parties());
+  return lb_policy;
+}
+
+void GrpcLb::CreateOrUpdateChildPolicyLocked() {
+  if (shutting_down_) return;
+  // Construct update args.
+  UpdateArgs update_args;
+  bool is_backend_from_grpclb_load_balancer = false;
+  if (fallback_mode_) {
+    // If CreateOrUpdateChildPolicyLocked() is invoked when we haven't
+    // received any serverlist from the balancer, we use the fallback backends
+    // returned by the resolver. Note that the fallback backend list may be
+    // empty, in which case the new round_robin policy will keep the requested
+    // picks pending.
+    update_args.addresses = fallback_backend_addresses_;
+  } else {
+    update_args.addresses = serverlist_->GetServerAddressList(
+        lb_calld_ == nullptr ? nullptr : lb_calld_->client_stats());
+    is_backend_from_grpclb_load_balancer = true;
+  }
+  update_args.args =
+      CreateChildPolicyArgsLocked(is_backend_from_grpclb_load_balancer);
+  GPR_ASSERT(update_args.args != nullptr);
+  update_args.config = child_policy_config_;
+  // Create child policy if needed.
+  if (child_policy_ == nullptr) {
+    child_policy_ = CreateChildPolicyLocked(update_args.args);
+  }
+  // Update the policy.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "[grpclb %p] Updating child policy handler %p", this,
+            child_policy_.get());
+  }
+  child_policy_->UpdateLocked(std::move(update_args));
+}
+
+//
+// factory
+//
+
+class GrpcLbFactory : public LoadBalancingPolicyFactory {
+ public:
+  OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args args) const override {
+    return MakeOrphanable<GrpcLb>(std::move(args));
+  }
+
+  const char* name() const override { return kGrpclb; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error) const override {
+    GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+    if (json.type() == Json::Type::JSON_NULL) {
+      return MakeRefCounted<GrpcLbConfig>(nullptr);
+    }
+    std::vector<grpc_error*> error_list;
+    Json child_policy_config_json_tmp;
+    const Json* child_policy_config_json;
+    auto it = json.object_value().find("childPolicy");
+    if (it == json.object_value().end()) {
+      child_policy_config_json_tmp = Json::Array{Json::Object{
+          {"round_robin", Json::Object()},
+      }};
+      child_policy_config_json = &child_policy_config_json_tmp;
+    } else {
+      child_policy_config_json = &it->second;
+    }
+    grpc_error* parse_error = GRPC_ERROR_NONE;
+    RefCountedPtr<LoadBalancingPolicy::Config> child_policy_config =
+        LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(
+            *child_policy_config_json, &parse_error);
+    if (parse_error != GRPC_ERROR_NONE) {
+      std::vector<grpc_error*> child_errors;
+      child_errors.push_back(parse_error);
+      error_list.push_back(
+          GRPC_ERROR_CREATE_FROM_VECTOR("field:childPolicy", &child_errors));
+    }
+    if (error_list.empty()) {
+      return MakeRefCounted<GrpcLbConfig>(std::move(child_policy_config));
+    } else {
+      *error = GRPC_ERROR_CREATE_FROM_VECTOR("GrpcLb Parser", &error_list);
+      return nullptr;
+    }
+  }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+//
+// Plugin registration
+//
+
+namespace {
+
+// Only add client_load_reporting filter if the grpclb LB policy is used.
+bool maybe_add_client_load_reporting_filter(grpc_channel_stack_builder* builder,
+                                            void* arg) {
+  const grpc_channel_args* args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  const grpc_arg* channel_arg =
+      grpc_channel_args_find(args, GRPC_ARG_LB_POLICY_NAME);
+  if (channel_arg != nullptr && channel_arg->type == GRPC_ARG_STRING &&
+      strcmp(channel_arg->value.string, "grpclb") == 0) {
+    // TODO(roth): When we get around to re-attempting
+    // https://github.com/grpc/grpc/pull/16214, we should try to keep
+    // this filter at the very top of the subchannel stack, since that
+    // will minimize the number of metadata elements that the filter
+    // needs to iterate through to find the ClientStats object.
+    return grpc_channel_stack_builder_prepend_filter(
+        builder, (const grpc_channel_filter*)arg, nullptr, nullptr);
+  }
+  return true;
+}
+
+}  // namespace
+
+void grpc_lb_policy_grpclb_init() {
+  grpc_core::LoadBalancingPolicyRegistry::Builder::
+      RegisterLoadBalancingPolicyFactory(
+          absl::make_unique<grpc_core::GrpcLbFactory>());
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_client_load_reporting_filter,
+                                   (void*)&grpc_client_load_reporting_filter);
+}
+
+void grpc_lb_policy_grpclb_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h
new file mode 100644
index 0000000..a032b5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H
+
+#include <grpc/support/port_platform.h>
+
+/** Channel arg indicating if a target corresponding to the address is grpclb
+ * loadbalancer. The type of this arg is an integer and the value is treated as
+ * a bool. */
+#define GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER \
+  "grpc.address_is_grpclb_load_balancer"
+/** Channel arg indicating if a target corresponding to the address is a backend
+ * received from a balancer. The type of this arg is an integer and the value is
+ * treated as a bool. */
+#define GRPC_ARG_ADDRESS_IS_BACKEND_FROM_GRPCLB_LOAD_BALANCER \
+  "grpc.address_is_backend_from_grpclb_load_balancer"
+
+namespace grpc_core {
+
+extern const char kGrpcLbClientStatsMetadataKey[];
+extern const char kGrpcLbLbTokenMetadataKey[];
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h
new file mode 100644
index 0000000..1458233
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+
+namespace grpc_core {
+
+/// Makes any necessary modifications to \a args for use in the grpclb
+/// balancer channel.
+///
+/// Takes ownership of \a args.
+///
+/// Caller takes ownership of the returned args.
+grpc_channel_args* ModifyGrpclbBalancerChannelArgs(
+    const ServerAddressList& addresses, grpc_channel_args* args);
+
+grpc_channel* CreateGrpclbBalancerChannel(const char* target_uri,
+                                          const grpc_channel_args& args);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CHANNEL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc
new file mode 100644
index 0000000..5bc4f51
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc	
@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h"
+
+#include <string.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+namespace {
+
+int BalancerNameCmp(const grpc_core::UniquePtr<char>& a,
+                    const grpc_core::UniquePtr<char>& b) {
+  return strcmp(a.get(), b.get());
+}
+
+RefCountedPtr<TargetAuthorityTable> CreateTargetAuthorityTable(
+    const ServerAddressList& addresses) {
+  TargetAuthorityTable::Entry* target_authority_entries =
+      static_cast<TargetAuthorityTable::Entry*>(
+          gpr_zalloc(sizeof(*target_authority_entries) * addresses.size()));
+  for (size_t i = 0; i < addresses.size(); ++i) {
+    char* addr_str;
+    GPR_ASSERT(
+        grpc_sockaddr_to_string(&addr_str, &addresses[i].address(), true) > 0);
+    target_authority_entries[i].key = grpc_slice_from_copied_string(addr_str);
+    gpr_free(addr_str);
+    char* balancer_name = grpc_channel_arg_get_string(grpc_channel_args_find(
+        addresses[i].args(), GRPC_ARG_ADDRESS_BALANCER_NAME));
+    target_authority_entries[i].value.reset(gpr_strdup(balancer_name));
+  }
+  RefCountedPtr<TargetAuthorityTable> target_authority_table =
+      TargetAuthorityTable::Create(addresses.size(), target_authority_entries,
+                                   BalancerNameCmp);
+  gpr_free(target_authority_entries);
+  return target_authority_table;
+}
+
+}  // namespace
+
+grpc_channel_args* ModifyGrpclbBalancerChannelArgs(
+    const ServerAddressList& addresses, grpc_channel_args* args) {
+  InlinedVector<const char*, 1> args_to_remove;
+  InlinedVector<grpc_arg, 2> args_to_add;
+  // Add arg for targets info table.
+  RefCountedPtr<TargetAuthorityTable> target_authority_table =
+      CreateTargetAuthorityTable(addresses);
+  args_to_add.emplace_back(
+      CreateTargetAuthorityTableChannelArg(target_authority_table.get()));
+  // Substitute the channel credentials with a version without call
+  // credentials: the load balancer is not necessarily trusted to handle
+  // bearer token credentials.
+  grpc_channel_credentials* channel_credentials =
+      grpc_channel_credentials_find_in_args(args);
+  RefCountedPtr<grpc_channel_credentials> creds_sans_call_creds;
+  if (channel_credentials != nullptr) {
+    creds_sans_call_creds =
+        channel_credentials->duplicate_without_call_credentials();
+    GPR_ASSERT(creds_sans_call_creds != nullptr);
+    args_to_remove.emplace_back(GRPC_ARG_CHANNEL_CREDENTIALS);
+    args_to_add.emplace_back(
+        grpc_channel_credentials_to_arg(creds_sans_call_creds.get()));
+  }
+  grpc_channel_args* result = grpc_channel_args_copy_and_add_and_remove(
+      args, args_to_remove.data(), args_to_remove.size(), args_to_add.data(),
+      args_to_add.size());
+  // Clean up.
+  grpc_channel_args_destroy(args);
+  return result;
+}
+
+grpc_channel* CreateGrpclbBalancerChannel(const char* target_uri,
+                                          const grpc_channel_args& args) {
+  grpc_channel_credentials* creds =
+      grpc_channel_credentials_find_in_args(&args);
+  if (creds == nullptr) {
+    // Build with security but parent channel is insecure.
+    return grpc_insecure_channel_create(target_uri, &args, nullptr);
+  }
+  const char* arg_to_remove = GRPC_ARG_CHANNEL_CREDENTIALS;
+  grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_remove(&args, &arg_to_remove, 1);
+  grpc_channel* channel =
+      grpc_secure_channel_create(creds, target_uri, new_args, nullptr);
+  grpc_channel_args_destroy(new_args);
+  return channel;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc
new file mode 100644
index 0000000..1566e7b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
+
+#include <string.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+
+void GrpcLbClientStats::AddCallStarted() {
+  gpr_atm_full_fetch_add(&num_calls_started_, (gpr_atm)1);
+}
+
+void GrpcLbClientStats::AddCallFinished(
+    bool finished_with_client_failed_to_send, bool finished_known_received) {
+  gpr_atm_full_fetch_add(&num_calls_finished_, (gpr_atm)1);
+  if (finished_with_client_failed_to_send) {
+    gpr_atm_full_fetch_add(&num_calls_finished_with_client_failed_to_send_,
+                           (gpr_atm)1);
+  }
+  if (finished_known_received) {
+    gpr_atm_full_fetch_add(&num_calls_finished_known_received_, (gpr_atm)1);
+  }
+}
+
+void GrpcLbClientStats::AddCallDropped(const char* token) {
+  // Increment num_calls_started and num_calls_finished.
+  gpr_atm_full_fetch_add(&num_calls_started_, (gpr_atm)1);
+  gpr_atm_full_fetch_add(&num_calls_finished_, (gpr_atm)1);
+  // Record the drop.
+  MutexLock lock(&drop_count_mu_);
+  if (drop_token_counts_ == nullptr) {
+    drop_token_counts_.reset(new DroppedCallCounts());
+  }
+  for (size_t i = 0; i < drop_token_counts_->size(); ++i) {
+    if (strcmp((*drop_token_counts_)[i].token.get(), token) == 0) {
+      ++(*drop_token_counts_)[i].count;
+      return;
+    }
+  }
+  // Not found, so add a new entry.
+  drop_token_counts_->emplace_back(
+      grpc_core::UniquePtr<char>(gpr_strdup(token)), 1);
+}
+
+namespace {
+
+void AtomicGetAndResetCounter(int64_t* value, gpr_atm* counter) {
+  *value = static_cast<int64_t>(gpr_atm_full_xchg(counter, (gpr_atm)0));
+}
+
+}  // namespace
+
+void GrpcLbClientStats::Get(
+    int64_t* num_calls_started, int64_t* num_calls_finished,
+    int64_t* num_calls_finished_with_client_failed_to_send,
+    int64_t* num_calls_finished_known_received,
+    std::unique_ptr<DroppedCallCounts>* drop_token_counts) {
+  AtomicGetAndResetCounter(num_calls_started, &num_calls_started_);
+  AtomicGetAndResetCounter(num_calls_finished, &num_calls_finished_);
+  AtomicGetAndResetCounter(num_calls_finished_with_client_failed_to_send,
+                           &num_calls_finished_with_client_failed_to_send_);
+  AtomicGetAndResetCounter(num_calls_finished_known_received,
+                           &num_calls_finished_known_received_);
+  MutexLock lock(&drop_count_mu_);
+  *drop_token_counts = std::move(drop_token_counts_);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h
new file mode 100644
index 0000000..4b1c004
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h	
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+
+class GrpcLbClientStats : public RefCounted<GrpcLbClientStats> {
+ public:
+  struct DropTokenCount {
+    grpc_core::UniquePtr<char> token;
+    int64_t count;
+
+    DropTokenCount(grpc_core::UniquePtr<char> token, int64_t count)
+        : token(std::move(token)), count(count) {}
+  };
+
+  typedef InlinedVector<DropTokenCount, 10> DroppedCallCounts;
+
+  void AddCallStarted();
+  void AddCallFinished(bool finished_with_client_failed_to_send,
+                       bool finished_known_received);
+
+  void AddCallDropped(const char* token);
+
+  void Get(int64_t* num_calls_started, int64_t* num_calls_finished,
+           int64_t* num_calls_finished_with_client_failed_to_send,
+           int64_t* num_calls_finished_known_received,
+           std::unique_ptr<DroppedCallCounts>* drop_token_counts);
+
+  // A destruction function to use as the user_data key when attaching
+  // client stats to a grpc_mdelem.
+  static void Destroy(void* arg) {
+    static_cast<GrpcLbClientStats*>(arg)->Unref();
+  }
+
+ private:
+  gpr_atm num_calls_started_ = 0;
+  gpr_atm num_calls_finished_ = 0;
+  gpr_atm num_calls_finished_with_client_failed_to_send_ = 0;
+  gpr_atm num_calls_finished_known_received_ = 0;
+  Mutex drop_count_mu_;  // Guards drop_token_counts_.
+  std::unique_ptr<DroppedCallCounts> drop_token_counts_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_GRPCLB_CLIENT_STATS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.cc
new file mode 100644
index 0000000..60bac92
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.cc	
@@ -0,0 +1,201 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h"
+#include "src/core/lib/gpr/useful.h"
+
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/timestamp.upb.h"
+#else
+  #include  "google/protobuf/timestamp.upb.h"
+#endif
+
+#include <grpc/support/alloc.h>
+
+namespace grpc_core {
+
+bool GrpcLbServer::operator==(const GrpcLbServer& other) const {
+  if (ip_size != other.ip_size) return false;
+  int r = memcmp(ip_addr, other.ip_addr, ip_size);
+  if (r != 0) return false;
+  if (port != other.port) return false;
+  r = strncmp(load_balance_token, other.load_balance_token,
+              sizeof(load_balance_token));
+  if (r != 0) return false;
+  return drop == other.drop;
+}
+
+namespace {
+
+grpc_slice grpc_grpclb_request_encode(
+    const grpc_lb_v1_LoadBalanceRequest* request, upb_arena* arena) {
+  size_t buf_length;
+  char* buf =
+      grpc_lb_v1_LoadBalanceRequest_serialize(request, arena, &buf_length);
+  return grpc_slice_from_copied_buffer(buf, buf_length);
+}
+
+}  // namespace
+
+grpc_slice GrpcLbRequestCreate(const char* lb_service_name, upb_arena* arena) {
+  grpc_lb_v1_LoadBalanceRequest* req = grpc_lb_v1_LoadBalanceRequest_new(arena);
+  grpc_lb_v1_InitialLoadBalanceRequest* initial_request =
+      grpc_lb_v1_LoadBalanceRequest_mutable_initial_request(req, arena);
+  size_t name_len =
+      GPR_MIN(strlen(lb_service_name), GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH);
+  grpc_lb_v1_InitialLoadBalanceRequest_set_name(
+      initial_request, upb_strview_make(lb_service_name, name_len));
+  return grpc_grpclb_request_encode(req, arena);
+}
+
+namespace {
+
+void google_protobuf_Timestamp_assign(google_protobuf_Timestamp* timestamp,
+                                      const gpr_timespec& value) {
+  google_protobuf_Timestamp_set_seconds(timestamp, value.tv_sec);
+  google_protobuf_Timestamp_set_nanos(timestamp, value.tv_nsec);
+}
+
+}  // namespace
+
+grpc_slice GrpcLbLoadReportRequestCreate(
+    int64_t num_calls_started, int64_t num_calls_finished,
+    int64_t num_calls_finished_with_client_failed_to_send,
+    int64_t num_calls_finished_known_received,
+    const GrpcLbClientStats::DroppedCallCounts* drop_token_counts,
+    upb_arena* arena) {
+  grpc_lb_v1_LoadBalanceRequest* req = grpc_lb_v1_LoadBalanceRequest_new(arena);
+  grpc_lb_v1_ClientStats* req_stats =
+      grpc_lb_v1_LoadBalanceRequest_mutable_client_stats(req, arena);
+  google_protobuf_Timestamp_assign(
+      grpc_lb_v1_ClientStats_mutable_timestamp(req_stats, arena),
+      gpr_now(GPR_CLOCK_REALTIME));
+  grpc_lb_v1_ClientStats_set_num_calls_started(req_stats, num_calls_started);
+  grpc_lb_v1_ClientStats_set_num_calls_finished(req_stats, num_calls_finished);
+  grpc_lb_v1_ClientStats_set_num_calls_finished_with_client_failed_to_send(
+      req_stats, num_calls_finished_with_client_failed_to_send);
+  grpc_lb_v1_ClientStats_set_num_calls_finished_known_received(
+      req_stats, num_calls_finished_known_received);
+  if (drop_token_counts != nullptr) {
+    for (size_t i = 0; i < drop_token_counts->size(); ++i) {
+      const GrpcLbClientStats::DropTokenCount& cur = (*drop_token_counts)[i];
+      grpc_lb_v1_ClientStatsPerToken* cur_msg =
+          grpc_lb_v1_ClientStats_add_calls_finished_with_drop(req_stats, arena);
+      const size_t token_len = strlen(cur.token.get());
+      char* token = reinterpret_cast<char*>(upb_arena_malloc(arena, token_len));
+      memcpy(token, cur.token.get(), token_len);
+      grpc_lb_v1_ClientStatsPerToken_set_load_balance_token(
+          cur_msg, upb_strview_make(token, token_len));
+      grpc_lb_v1_ClientStatsPerToken_set_num_calls(cur_msg, cur.count);
+    }
+  }
+  return grpc_grpclb_request_encode(req, arena);
+}
+
+namespace {
+
+bool ParseServerList(const grpc_lb_v1_LoadBalanceResponse& response,
+                     std::vector<GrpcLbServer>* server_list) {
+  // Determine the number of servers.
+  const grpc_lb_v1_ServerList* server_list_msg =
+      grpc_lb_v1_LoadBalanceResponse_server_list(&response);
+  if (server_list_msg == nullptr) return false;
+  size_t server_count = 0;
+  const grpc_lb_v1_Server* const* servers =
+      grpc_lb_v1_ServerList_servers(server_list_msg, &server_count);
+  // Populate servers.
+  if (server_count > 0) {
+    server_list->reserve(server_count);
+    for (size_t i = 0; i < server_count; ++i) {
+      GrpcLbServer& cur = *server_list->emplace(server_list->end());
+      upb_strview address = grpc_lb_v1_Server_ip_address(servers[i]);
+      if (address.size == 0) {
+        ;  // Nothing to do because cur->ip_address is an empty string.
+      } else if (address.size <= GRPC_GRPCLB_SERVER_IP_ADDRESS_MAX_SIZE) {
+        cur.ip_size = static_cast<int32_t>(address.size);
+        memcpy(cur.ip_addr, address.data, address.size);
+      }
+      cur.port = grpc_lb_v1_Server_port(servers[i]);
+      upb_strview token = grpc_lb_v1_Server_load_balance_token(servers[i]);
+      if (token.size == 0) {
+        ;  // Nothing to do because cur->load_balance_token is an empty string.
+      } else if (token.size <= GRPC_GRPCLB_SERVER_LOAD_BALANCE_TOKEN_MAX_SIZE) {
+        memcpy(cur.load_balance_token, token.data, token.size);
+      } else {
+        gpr_log(GPR_ERROR,
+                "grpc_lb_v1_LoadBalanceResponse has too long token. len=%zu",
+                token.size);
+      }
+      cur.drop = grpc_lb_v1_Server_drop(servers[i]);
+    }
+  }
+  return true;
+}
+
+grpc_millis grpc_grpclb_duration_to_millis(
+    const google_protobuf_Duration* duration_pb) {
+  return static_cast<grpc_millis>(
+      (google_protobuf_Duration_seconds(duration_pb) * GPR_MS_PER_SEC) +
+      (google_protobuf_Duration_nanos(duration_pb) / GPR_NS_PER_MS));
+}
+
+}  // namespace
+
+bool GrpcLbResponseParse(const grpc_slice& encoded_grpc_grpclb_response,
+                         upb_arena* arena, GrpcLbResponse* result) {
+  grpc_lb_v1_LoadBalanceResponse* response =
+      grpc_lb_v1_LoadBalanceResponse_parse(
+          reinterpret_cast<const char*>(
+              GRPC_SLICE_START_PTR(encoded_grpc_grpclb_response)),
+          GRPC_SLICE_LENGTH(encoded_grpc_grpclb_response), arena);
+  // Handle serverlist responses.
+  if (ParseServerList(*response, &result->serverlist)) {
+    result->type = result->SERVERLIST;
+    return true;
+  }
+  // Handle initial responses.
+  auto* initial_response =
+      grpc_lb_v1_LoadBalanceResponse_initial_response(response);
+  if (initial_response != nullptr) {
+    result->type = result->INITIAL;
+    const google_protobuf_Duration* client_stats_report_interval =
+        grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval(
+            initial_response);
+    if (client_stats_report_interval != nullptr) {
+      result->client_stats_report_interval =
+          grpc_grpclb_duration_to_millis(client_stats_report_interval);
+    }
+    return true;
+  }
+  // Handle fallback.
+  if (grpc_lb_v1_LoadBalanceResponse_has_fallback_response(response)) {
+    result->type = result->FALLBACK;
+    return true;
+  }
+  // Unknown response type.
+  return false;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h
new file mode 100644
index 0000000..f46ca18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <vector>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h"
+#else
+  #include  "src/proto/grpc/lb/v1/load_balancer.upb.h"
+#endif
+
+#define GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH 128
+#define GRPC_GRPCLB_SERVER_IP_ADDRESS_MAX_SIZE 16
+#define GRPC_GRPCLB_SERVER_LOAD_BALANCE_TOKEN_MAX_SIZE 50
+
+namespace grpc_core {
+
+// Contains server information. When the drop field is not true, use the other
+// fields.
+struct GrpcLbServer {
+  int32_t ip_size;
+  char ip_addr[GRPC_GRPCLB_SERVER_IP_ADDRESS_MAX_SIZE];
+  int32_t port;
+  char load_balance_token[GRPC_GRPCLB_SERVER_LOAD_BALANCE_TOKEN_MAX_SIZE];
+  bool drop;
+
+  bool operator==(const GrpcLbServer& other) const;
+};
+
+struct GrpcLbResponse {
+  enum { INITIAL, SERVERLIST, FALLBACK } type;
+  grpc_millis client_stats_report_interval = 0;
+  std::vector<GrpcLbServer> serverlist;
+};
+
+// Creates a serialized grpclb request.
+grpc_slice GrpcLbRequestCreate(const char* lb_service_name, upb_arena* arena);
+
+// Creates a serialized grpclb load report request.
+grpc_slice GrpcLbLoadReportRequestCreate(
+    int64_t num_calls_started, int64_t num_calls_finished,
+    int64_t num_calls_finished_with_client_failed_to_send,
+    int64_t num_calls_finished_known_received,
+    const GrpcLbClientStats::DroppedCallCounts* drop_token_counts,
+    upb_arena* arena);
+
+// Deserialize a grpclb response.
+bool GrpcLbResponseParse(const grpc_slice& serialized_response,
+                         upb_arena* arena, GrpcLbResponse* response);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc
new file mode 100644
index 0000000..246b15a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc	
@@ -0,0 +1,509 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/subchannel_list.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_lb_pick_first_trace(false, "pick_first");
+
+namespace {
+
+//
+// pick_first LB policy
+//
+
+constexpr char kPickFirst[] = "pick_first";
+
+class PickFirst : public LoadBalancingPolicy {
+ public:
+  explicit PickFirst(Args args);
+
+  const char* name() const override { return kPickFirst; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ExitIdleLocked() override;
+  void ResetBackoffLocked() override;
+
+ private:
+  ~PickFirst();
+
+  class PickFirstSubchannelList;
+
+  class PickFirstSubchannelData
+      : public SubchannelData<PickFirstSubchannelList,
+                              PickFirstSubchannelData> {
+   public:
+    PickFirstSubchannelData(
+        SubchannelList<PickFirstSubchannelList, PickFirstSubchannelData>*
+            subchannel_list,
+        const ServerAddress& address,
+        RefCountedPtr<SubchannelInterface> subchannel)
+        : SubchannelData(subchannel_list, address, std::move(subchannel)) {}
+
+    void ProcessConnectivityChangeLocked(
+        grpc_connectivity_state connectivity_state) override;
+
+    // Processes the connectivity change to READY for an unselected subchannel.
+    void ProcessUnselectedReadyLocked();
+
+    void CheckConnectivityStateAndStartWatchingLocked();
+  };
+
+  class PickFirstSubchannelList
+      : public SubchannelList<PickFirstSubchannelList,
+                              PickFirstSubchannelData> {
+   public:
+    PickFirstSubchannelList(PickFirst* policy, TraceFlag* tracer,
+                            const ServerAddressList& addresses,
+                            const grpc_channel_args& args)
+        : SubchannelList(policy, tracer, addresses,
+                         policy->channel_control_helper(), args) {
+      // Need to maintain a ref to the LB policy as long as we maintain
+      // any references to subchannels, since the subchannels'
+      // pollset_sets will include the LB policy's pollset_set.
+      policy->Ref(DEBUG_LOCATION, "subchannel_list").release();
+    }
+
+    ~PickFirstSubchannelList() {
+      PickFirst* p = static_cast<PickFirst*>(policy());
+      p->Unref(DEBUG_LOCATION, "subchannel_list");
+    }
+
+    bool in_transient_failure() const { return in_transient_failure_; }
+    void set_in_transient_failure(bool in_transient_failure) {
+      in_transient_failure_ = in_transient_failure;
+    }
+
+   private:
+    bool in_transient_failure_ = false;
+  };
+
+  class Picker : public SubchannelPicker {
+   public:
+    explicit Picker(RefCountedPtr<SubchannelInterface> subchannel)
+        : subchannel_(std::move(subchannel)) {}
+
+    PickResult Pick(PickArgs /*args*/) override {
+      PickResult result;
+      result.type = PickResult::PICK_COMPLETE;
+      result.subchannel = subchannel_;
+      return result;
+    }
+
+   private:
+    RefCountedPtr<SubchannelInterface> subchannel_;
+  };
+
+  void ShutdownLocked() override;
+
+  void AttemptToConnectUsingLatestUpdateArgsLocked();
+
+  // Lateset update args.
+  UpdateArgs latest_update_args_;
+  // All our subchannels.
+  OrphanablePtr<PickFirstSubchannelList> subchannel_list_;
+  // Latest pending subchannel list.
+  OrphanablePtr<PickFirstSubchannelList> latest_pending_subchannel_list_;
+  // Selected subchannel in \a subchannel_list_.
+  PickFirstSubchannelData* selected_ = nullptr;
+  // Are we in IDLE state?
+  bool idle_ = false;
+  // Are we shut down?
+  bool shutdown_ = false;
+};
+
+PickFirst::PickFirst(Args args) : LoadBalancingPolicy(std::move(args)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+    gpr_log(GPR_INFO, "Pick First %p created.", this);
+  }
+}
+
+PickFirst::~PickFirst() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+    gpr_log(GPR_INFO, "Destroying Pick First %p", this);
+  }
+  GPR_ASSERT(subchannel_list_ == nullptr);
+  GPR_ASSERT(latest_pending_subchannel_list_ == nullptr);
+}
+
+void PickFirst::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+    gpr_log(GPR_INFO, "Pick First %p Shutting down", this);
+  }
+  shutdown_ = true;
+  subchannel_list_.reset();
+  latest_pending_subchannel_list_.reset();
+}
+
+void PickFirst::ExitIdleLocked() {
+  if (shutdown_) return;
+  if (idle_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+      gpr_log(GPR_INFO, "Pick First %p exiting idle", this);
+    }
+    idle_ = false;
+    AttemptToConnectUsingLatestUpdateArgsLocked();
+  }
+}
+
+void PickFirst::ResetBackoffLocked() {
+  if (subchannel_list_ != nullptr) subchannel_list_->ResetBackoffLocked();
+  if (latest_pending_subchannel_list_ != nullptr) {
+    latest_pending_subchannel_list_->ResetBackoffLocked();
+  }
+}
+
+void PickFirst::AttemptToConnectUsingLatestUpdateArgsLocked() {
+  // Create a subchannel list from the latest_update_args_.
+  auto subchannel_list = MakeOrphanable<PickFirstSubchannelList>(
+      this, &grpc_lb_pick_first_trace, latest_update_args_.addresses,
+      *latest_update_args_.args);
+  // Empty update or no valid subchannels.
+  if (subchannel_list->num_subchannels() == 0) {
+    // Unsubscribe from all current subchannels.
+    subchannel_list_ = std::move(subchannel_list);  // Empty list.
+    selected_ = nullptr;
+    // If not idle, put the channel in TRANSIENT_FAILURE.
+    // (If we are idle, then this will happen in ExitIdleLocked() if we
+    // haven't gotten a non-empty update by the time the application tries
+    // to start a new call.)
+    grpc_error* error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Empty update"),
+                           GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+    channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_TRANSIENT_FAILURE,
+        absl::make_unique<TransientFailurePicker>(error));
+    return;
+  }
+  // If one of the subchannels in the new list is already in state
+  // READY, then select it immediately.  This can happen when the
+  // currently selected subchannel is also present in the update.  It
+  // can also happen if one of the subchannels in the update is already
+  // in the global subchannel pool because it's in use by another channel.
+  for (size_t i = 0; i < subchannel_list->num_subchannels(); ++i) {
+    PickFirstSubchannelData* sd = subchannel_list->subchannel(i);
+    grpc_connectivity_state state = sd->CheckConnectivityStateLocked();
+    if (state == GRPC_CHANNEL_READY) {
+      subchannel_list_ = std::move(subchannel_list);
+      sd->StartConnectivityWatchLocked();
+      sd->ProcessUnselectedReadyLocked();
+      // If there was a previously pending update (which may or may
+      // not have contained the currently selected subchannel), drop
+      // it, so that it doesn't override what we've done here.
+      latest_pending_subchannel_list_.reset();
+      return;
+    }
+  }
+  if (selected_ == nullptr) {
+    // We don't yet have a selected subchannel, so replace the current
+    // subchannel list immediately.
+    subchannel_list_ = std::move(subchannel_list);
+    // If we're not in IDLE state, start trying to connect to the first
+    // subchannel in the new list.
+    // Note: No need to use CheckConnectivityStateAndStartWatchingLocked()
+    // here, since we've already checked the initial connectivity
+    // state of all subchannels above.
+    subchannel_list_->subchannel(0)->StartConnectivityWatchLocked();
+    subchannel_list_->subchannel(0)->subchannel()->AttemptToConnect();
+  } else {
+    // We do have a selected subchannel (which means it's READY), so keep
+    // using it until one of the subchannels in the new list reports READY.
+    if (latest_pending_subchannel_list_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+        gpr_log(GPR_INFO,
+                "Pick First %p Shutting down latest pending subchannel list "
+                "%p, about to be replaced by newer latest %p",
+                this, latest_pending_subchannel_list_.get(),
+                subchannel_list.get());
+      }
+    }
+    latest_pending_subchannel_list_ = std::move(subchannel_list);
+    // If we're not in IDLE state, start trying to connect to the first
+    // subchannel in the new list.
+    // Note: No need to use CheckConnectivityStateAndStartWatchingLocked()
+    // here, since we've already checked the initial connectivity
+    // state of all subchannels above.
+    latest_pending_subchannel_list_->subchannel(0)
+        ->StartConnectivityWatchLocked();
+    latest_pending_subchannel_list_->subchannel(0)
+        ->subchannel()
+        ->AttemptToConnect();
+  }
+}
+
+void PickFirst::UpdateLocked(UpdateArgs args) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+    gpr_log(GPR_INFO,
+            "Pick First %p received update with %" PRIuPTR " addresses", this,
+            args.addresses.size());
+  }
+  // Update the latest_update_args_
+  grpc_arg new_arg = grpc_channel_arg_integer_create(
+      const_cast<char*>(GRPC_ARG_INHIBIT_HEALTH_CHECKING), 1);
+  const grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_add(args.args, &new_arg, 1);
+  GPR_SWAP(const grpc_channel_args*, new_args, args.args);
+  grpc_channel_args_destroy(new_args);
+  latest_update_args_ = std::move(args);
+  // If we are not in idle, start connection attempt immediately.
+  // Otherwise, we defer the attempt into ExitIdleLocked().
+  if (!idle_) {
+    AttemptToConnectUsingLatestUpdateArgsLocked();
+  }
+}
+
+void PickFirst::PickFirstSubchannelData::ProcessConnectivityChangeLocked(
+    grpc_connectivity_state connectivity_state) {
+  PickFirst* p = static_cast<PickFirst*>(subchannel_list()->policy());
+  // The notification must be for a subchannel in either the current or
+  // latest pending subchannel lists.
+  GPR_ASSERT(subchannel_list() == p->subchannel_list_.get() ||
+             subchannel_list() == p->latest_pending_subchannel_list_.get());
+  GPR_ASSERT(connectivity_state != GRPC_CHANNEL_SHUTDOWN);
+  // Handle updates for the currently selected subchannel.
+  if (p->selected_ == this) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+      gpr_log(GPR_INFO,
+              "Pick First %p selected subchannel connectivity changed to %s", p,
+              ConnectivityStateName(connectivity_state));
+    }
+    // If the new state is anything other than READY and there is a
+    // pending update, switch to the pending update.
+    if (connectivity_state != GRPC_CHANNEL_READY &&
+        p->latest_pending_subchannel_list_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+        gpr_log(GPR_INFO,
+                "Pick First %p promoting pending subchannel list %p to "
+                "replace %p",
+                p, p->latest_pending_subchannel_list_.get(),
+                p->subchannel_list_.get());
+      }
+      p->selected_ = nullptr;
+      CancelConnectivityWatchLocked(
+          "selected subchannel failed; switching to pending update");
+      p->subchannel_list_ = std::move(p->latest_pending_subchannel_list_);
+      // Set our state to that of the pending subchannel list.
+      if (p->subchannel_list_->in_transient_failure()) {
+        grpc_error* error = grpc_error_set_int(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "selected subchannel failed; switching to pending update"),
+            GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+        p->channel_control_helper()->UpdateState(
+            GRPC_CHANNEL_TRANSIENT_FAILURE,
+            absl::make_unique<TransientFailurePicker>(error));
+      } else {
+        p->channel_control_helper()->UpdateState(
+            GRPC_CHANNEL_CONNECTING, absl::make_unique<QueuePicker>(p->Ref(
+                                         DEBUG_LOCATION, "QueuePicker")));
+      }
+    } else {
+      if (connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+        // If the selected subchannel goes bad, request a re-resolution. We
+        // also set the channel state to IDLE. The reason is that if the new
+        // state is TRANSIENT_FAILURE due to a GOAWAY reception we don't want
+        // to connect to the re-resolved backends until we leave IDLE state.
+        // TODO(qianchengz): We may want to request re-resolution in
+        // ExitIdleLocked().
+        p->idle_ = true;
+        p->channel_control_helper()->RequestReresolution();
+        p->selected_ = nullptr;
+        p->subchannel_list_.reset();
+        p->channel_control_helper()->UpdateState(
+            GRPC_CHANNEL_IDLE, absl::make_unique<QueuePicker>(
+                                   p->Ref(DEBUG_LOCATION, "QueuePicker")));
+      } else {
+        // This is unlikely but can happen when a subchannel has been asked
+        // to reconnect by a different channel and this channel has dropped
+        // some connectivity state notifications.
+        if (connectivity_state == GRPC_CHANNEL_READY) {
+          p->channel_control_helper()->UpdateState(
+              GRPC_CHANNEL_READY,
+              absl::make_unique<Picker>(subchannel()->Ref()));
+        } else {  // CONNECTING
+          p->channel_control_helper()->UpdateState(
+              connectivity_state, absl::make_unique<QueuePicker>(
+                                      p->Ref(DEBUG_LOCATION, "QueuePicker")));
+        }
+      }
+    }
+    return;
+  }
+  // If we get here, there are two possible cases:
+  // 1. We do not currently have a selected subchannel, and the update is
+  //    for a subchannel in p->subchannel_list_ that we're trying to
+  //    connect to.  The goal here is to find a subchannel that we can
+  //    select.
+  // 2. We do currently have a selected subchannel, and the update is
+  //    for a subchannel in p->latest_pending_subchannel_list_.  The
+  //    goal here is to find a subchannel from the update that we can
+  //    select in place of the current one.
+  subchannel_list()->set_in_transient_failure(false);
+  switch (connectivity_state) {
+    case GRPC_CHANNEL_READY: {
+      ProcessUnselectedReadyLocked();
+      break;
+    }
+    case GRPC_CHANNEL_TRANSIENT_FAILURE: {
+      CancelConnectivityWatchLocked("connection attempt failed");
+      PickFirstSubchannelData* sd = this;
+      size_t next_index =
+          (sd->Index() + 1) % subchannel_list()->num_subchannels();
+      sd = subchannel_list()->subchannel(next_index);
+      // If we're tried all subchannels, set state to TRANSIENT_FAILURE.
+      if (sd->Index() == 0) {
+        // Re-resolve if this is the most recent subchannel list.
+        if (subchannel_list() == (p->latest_pending_subchannel_list_ != nullptr
+                                      ? p->latest_pending_subchannel_list_.get()
+                                      : p->subchannel_list_.get())) {
+          p->channel_control_helper()->RequestReresolution();
+        }
+        subchannel_list()->set_in_transient_failure(true);
+        // Only report new state in case 1.
+        if (subchannel_list() == p->subchannel_list_.get()) {
+          grpc_error* error = grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                  "failed to connect to all addresses"),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+          p->channel_control_helper()->UpdateState(
+              GRPC_CHANNEL_TRANSIENT_FAILURE,
+              absl::make_unique<TransientFailurePicker>(error));
+        }
+      }
+      sd->CheckConnectivityStateAndStartWatchingLocked();
+      break;
+    }
+    case GRPC_CHANNEL_CONNECTING:
+    case GRPC_CHANNEL_IDLE: {
+      // Only update connectivity state in case 1.
+      if (subchannel_list() == p->subchannel_list_.get()) {
+        p->channel_control_helper()->UpdateState(
+            GRPC_CHANNEL_CONNECTING, absl::make_unique<QueuePicker>(p->Ref(
+                                         DEBUG_LOCATION, "QueuePicker")));
+      }
+      break;
+    }
+    case GRPC_CHANNEL_SHUTDOWN:
+      GPR_UNREACHABLE_CODE(break);
+  }
+}
+
+void PickFirst::PickFirstSubchannelData::ProcessUnselectedReadyLocked() {
+  PickFirst* p = static_cast<PickFirst*>(subchannel_list()->policy());
+  // If we get here, there are two possible cases:
+  // 1. We do not currently have a selected subchannel, and the update is
+  //    for a subchannel in p->subchannel_list_ that we're trying to
+  //    connect to.  The goal here is to find a subchannel that we can
+  //    select.
+  // 2. We do currently have a selected subchannel, and the update is
+  //    for a subchannel in p->latest_pending_subchannel_list_.  The
+  //    goal here is to find a subchannel from the update that we can
+  //    select in place of the current one.
+  GPR_ASSERT(subchannel_list() == p->subchannel_list_.get() ||
+             subchannel_list() == p->latest_pending_subchannel_list_.get());
+  // Case 2.  Promote p->latest_pending_subchannel_list_ to p->subchannel_list_.
+  if (subchannel_list() == p->latest_pending_subchannel_list_.get()) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+      gpr_log(GPR_INFO,
+              "Pick First %p promoting pending subchannel list %p to "
+              "replace %p",
+              p, p->latest_pending_subchannel_list_.get(),
+              p->subchannel_list_.get());
+    }
+    p->subchannel_list_ = std::move(p->latest_pending_subchannel_list_);
+  }
+  // Cases 1 and 2.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_pick_first_trace)) {
+    gpr_log(GPR_INFO, "Pick First %p selected subchannel %p", p, subchannel());
+  }
+  p->selected_ = this;
+  p->channel_control_helper()->UpdateState(
+      GRPC_CHANNEL_READY, absl::make_unique<Picker>(subchannel()->Ref()));
+  for (size_t i = 0; i < subchannel_list()->num_subchannels(); ++i) {
+    if (i != Index()) {
+      subchannel_list()->subchannel(i)->ShutdownLocked();
+    }
+  }
+}
+
+void PickFirst::PickFirstSubchannelData::
+    CheckConnectivityStateAndStartWatchingLocked() {
+  PickFirst* p = static_cast<PickFirst*>(subchannel_list()->policy());
+  // Check current state.
+  grpc_connectivity_state current_state = CheckConnectivityStateLocked();
+  // Start watch.
+  StartConnectivityWatchLocked();
+  // If current state is READY, select the subchannel now, since we started
+  // watching from this state and will not get a notification of it
+  // transitioning into this state.
+  // If the current state is not READY, attempt to connect.
+  if (current_state == GRPC_CHANNEL_READY) {
+    if (p->selected_ != this) ProcessUnselectedReadyLocked();
+  } else {
+    subchannel()->AttemptToConnect();
+  }
+}
+
+class PickFirstConfig : public LoadBalancingPolicy::Config {
+ public:
+  const char* name() const override { return kPickFirst; }
+};
+
+//
+// factory
+//
+
+class PickFirstFactory : public LoadBalancingPolicyFactory {
+ public:
+  OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args args) const override {
+    return MakeOrphanable<PickFirst>(std::move(args));
+  }
+
+  const char* name() const override { return kPickFirst; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** /*error*/) const override {
+    return MakeRefCounted<PickFirstConfig>();
+  }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_lb_policy_pick_first_init() {
+  grpc_core::LoadBalancingPolicyRegistry::Builder::
+      RegisterLoadBalancingPolicyFactory(
+          absl::make_unique<grpc_core::PickFirstFactory>());
+}
+
+void grpc_lb_policy_pick_first_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
new file mode 100644
index 0000000..a5ab488
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc	
@@ -0,0 +1,504 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/** Round Robin Policy.
+ *
+ * Before every pick, the \a get_next_ready_subchannel_index_locked function
+ * returns the p->subchannel_list->subchannels index for next subchannel,
+ * respecting the relative order of the addresses provided upon creation or
+ * updates. Note however that updates will start picking from the beginning of
+ * the updated list. */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/subchannel_list.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_lb_round_robin_trace(false, "round_robin");
+
+namespace {
+
+//
+// round_robin LB policy
+//
+
+constexpr char kRoundRobin[] = "round_robin";
+
+class RoundRobin : public LoadBalancingPolicy {
+ public:
+  explicit RoundRobin(Args args);
+
+  const char* name() const override { return kRoundRobin; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ResetBackoffLocked() override;
+
+ private:
+  ~RoundRobin();
+
+  // Forward declaration.
+  class RoundRobinSubchannelList;
+
+  // Data for a particular subchannel in a subchannel list.
+  // This subclass adds the following functionality:
+  // - Tracks the previous connectivity state of the subchannel, so that
+  //   we know how many subchannels are in each state.
+  class RoundRobinSubchannelData
+      : public SubchannelData<RoundRobinSubchannelList,
+                              RoundRobinSubchannelData> {
+   public:
+    RoundRobinSubchannelData(
+        SubchannelList<RoundRobinSubchannelList, RoundRobinSubchannelData>*
+            subchannel_list,
+        const ServerAddress& address,
+        RefCountedPtr<SubchannelInterface> subchannel)
+        : SubchannelData(subchannel_list, address, std::move(subchannel)) {}
+
+    grpc_connectivity_state connectivity_state() const {
+      return last_connectivity_state_;
+    }
+
+    bool seen_failure_since_ready() const { return seen_failure_since_ready_; }
+
+    // Performs connectivity state updates that need to be done both when we
+    // first start watching and when a watcher notification is received.
+    void UpdateConnectivityStateLocked(
+        grpc_connectivity_state connectivity_state);
+
+   private:
+    // Performs connectivity state updates that need to be done only
+    // after we have started watching.
+    void ProcessConnectivityChangeLocked(
+        grpc_connectivity_state connectivity_state) override;
+
+    grpc_connectivity_state last_connectivity_state_ = GRPC_CHANNEL_IDLE;
+    bool seen_failure_since_ready_ = false;
+  };
+
+  // A list of subchannels.
+  class RoundRobinSubchannelList
+      : public SubchannelList<RoundRobinSubchannelList,
+                              RoundRobinSubchannelData> {
+   public:
+    RoundRobinSubchannelList(RoundRobin* policy, TraceFlag* tracer,
+                             const ServerAddressList& addresses,
+                             const grpc_channel_args& args)
+        : SubchannelList(policy, tracer, addresses,
+                         policy->channel_control_helper(), args) {
+      // Need to maintain a ref to the LB policy as long as we maintain
+      // any references to subchannels, since the subchannels'
+      // pollset_sets will include the LB policy's pollset_set.
+      policy->Ref(DEBUG_LOCATION, "subchannel_list").release();
+    }
+
+    ~RoundRobinSubchannelList() {
+      RoundRobin* p = static_cast<RoundRobin*>(policy());
+      p->Unref(DEBUG_LOCATION, "subchannel_list");
+    }
+
+    // Starts watching the subchannels in this list.
+    void StartWatchingLocked();
+
+    // Updates the counters of subchannels in each state when a
+    // subchannel transitions from old_state to new_state.
+    void UpdateStateCountersLocked(grpc_connectivity_state old_state,
+                                   grpc_connectivity_state new_state);
+
+    // If this subchannel list is the RR policy's current subchannel
+    // list, updates the RR policy's connectivity state based on the
+    // subchannel list's state counters.
+    void MaybeUpdateRoundRobinConnectivityStateLocked();
+
+    // Updates the RR policy's overall state based on the counters of
+    // subchannels in each state.
+    void UpdateRoundRobinStateFromSubchannelStateCountsLocked();
+
+   private:
+    size_t num_ready_ = 0;
+    size_t num_connecting_ = 0;
+    size_t num_transient_failure_ = 0;
+  };
+
+  class Picker : public SubchannelPicker {
+   public:
+    Picker(RoundRobin* parent, RoundRobinSubchannelList* subchannel_list);
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    // Using pointer value only, no ref held -- do not dereference!
+    RoundRobin* parent_;
+
+    size_t last_picked_index_;
+    InlinedVector<RefCountedPtr<SubchannelInterface>, 10> subchannels_;
+  };
+
+  void ShutdownLocked() override;
+
+  /** list of subchannels */
+  OrphanablePtr<RoundRobinSubchannelList> subchannel_list_;
+  /** Latest version of the subchannel list.
+   * Subchannel connectivity callbacks will only promote updated subchannel
+   * lists if they equal \a latest_pending_subchannel_list. In other words,
+   * racing callbacks that reference outdated subchannel lists won't perform any
+   * update. */
+  OrphanablePtr<RoundRobinSubchannelList> latest_pending_subchannel_list_;
+  /** are we shutting down? */
+  bool shutdown_ = false;
+};
+
+//
+// RoundRobin::Picker
+//
+
+RoundRobin::Picker::Picker(RoundRobin* parent,
+                           RoundRobinSubchannelList* subchannel_list)
+    : parent_(parent) {
+  for (size_t i = 0; i < subchannel_list->num_subchannels(); ++i) {
+    RoundRobinSubchannelData* sd = subchannel_list->subchannel(i);
+    if (sd->connectivity_state() == GRPC_CHANNEL_READY) {
+      subchannels_.push_back(sd->subchannel()->Ref());
+    }
+  }
+  // For discussion on why we generate a random starting index for
+  // the picker, see https://github.com/grpc/grpc-go/issues/2580.
+  // TODO(roth): rand(3) is not thread-safe.  This should be replaced with
+  // something better as part of https://github.com/grpc/grpc/issues/17891.
+  last_picked_index_ = rand() % subchannels_.size();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO,
+            "[RR %p picker %p] created picker from subchannel_list=%p "
+            "with %" PRIuPTR " READY subchannels; last_picked_index_=%" PRIuPTR,
+            parent_, this, subchannel_list, subchannels_.size(),
+            last_picked_index_);
+  }
+}
+
+RoundRobin::PickResult RoundRobin::Picker::Pick(PickArgs /*args*/) {
+  last_picked_index_ = (last_picked_index_ + 1) % subchannels_.size();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO,
+            "[RR %p picker %p] returning index %" PRIuPTR ", subchannel=%p",
+            parent_, this, last_picked_index_,
+            subchannels_[last_picked_index_].get());
+  }
+  PickResult result;
+  result.type = PickResult::PICK_COMPLETE;
+  result.subchannel = subchannels_[last_picked_index_];
+  return result;
+}
+
+//
+// RoundRobin
+//
+
+RoundRobin::RoundRobin(Args args) : LoadBalancingPolicy(std::move(args)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO, "[RR %p] Created", this);
+  }
+}
+
+RoundRobin::~RoundRobin() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO, "[RR %p] Destroying Round Robin policy", this);
+  }
+  GPR_ASSERT(subchannel_list_ == nullptr);
+  GPR_ASSERT(latest_pending_subchannel_list_ == nullptr);
+}
+
+void RoundRobin::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO, "[RR %p] Shutting down", this);
+  }
+  shutdown_ = true;
+  subchannel_list_.reset();
+  latest_pending_subchannel_list_.reset();
+}
+
+void RoundRobin::ResetBackoffLocked() {
+  subchannel_list_->ResetBackoffLocked();
+  if (latest_pending_subchannel_list_ != nullptr) {
+    latest_pending_subchannel_list_->ResetBackoffLocked();
+  }
+}
+
+void RoundRobin::RoundRobinSubchannelList::StartWatchingLocked() {
+  if (num_subchannels() == 0) return;
+  // Check current state of each subchannel synchronously, since any
+  // subchannel already used by some other channel may have a non-IDLE
+  // state.
+  for (size_t i = 0; i < num_subchannels(); ++i) {
+    grpc_connectivity_state state =
+        subchannel(i)->CheckConnectivityStateLocked();
+    if (state != GRPC_CHANNEL_IDLE) {
+      subchannel(i)->UpdateConnectivityStateLocked(state);
+    }
+  }
+  // Start connectivity watch for each subchannel.
+  for (size_t i = 0; i < num_subchannels(); i++) {
+    if (subchannel(i)->subchannel() != nullptr) {
+      subchannel(i)->StartConnectivityWatchLocked();
+      subchannel(i)->subchannel()->AttemptToConnect();
+    }
+  }
+  // Now set the LB policy's state based on the subchannels' states.
+  UpdateRoundRobinStateFromSubchannelStateCountsLocked();
+}
+
+void RoundRobin::RoundRobinSubchannelList::UpdateStateCountersLocked(
+    grpc_connectivity_state old_state, grpc_connectivity_state new_state) {
+  GPR_ASSERT(old_state != GRPC_CHANNEL_SHUTDOWN);
+  GPR_ASSERT(new_state != GRPC_CHANNEL_SHUTDOWN);
+  if (old_state == GRPC_CHANNEL_READY) {
+    GPR_ASSERT(num_ready_ > 0);
+    --num_ready_;
+  } else if (old_state == GRPC_CHANNEL_CONNECTING) {
+    GPR_ASSERT(num_connecting_ > 0);
+    --num_connecting_;
+  } else if (old_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+    GPR_ASSERT(num_transient_failure_ > 0);
+    --num_transient_failure_;
+  }
+  if (new_state == GRPC_CHANNEL_READY) {
+    ++num_ready_;
+  } else if (new_state == GRPC_CHANNEL_CONNECTING) {
+    ++num_connecting_;
+  } else if (new_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+    ++num_transient_failure_;
+  }
+}
+
+// Sets the RR policy's connectivity state and generates a new picker based
+// on the current subchannel list.
+void RoundRobin::RoundRobinSubchannelList::
+    MaybeUpdateRoundRobinConnectivityStateLocked() {
+  RoundRobin* p = static_cast<RoundRobin*>(policy());
+  // Only set connectivity state if this is the current subchannel list.
+  if (p->subchannel_list_.get() != this) return;
+  /* In priority order. The first rule to match terminates the search (ie, if we
+   * are on rule n, all previous rules were unfulfilled).
+   *
+   * 1) RULE: ANY subchannel is READY => policy is READY.
+   *    CHECK: subchannel_list->num_ready > 0.
+   *
+   * 2) RULE: ANY subchannel is CONNECTING => policy is CONNECTING.
+   *    CHECK: sd->curr_connectivity_state == CONNECTING.
+   *
+   * 3) RULE: ALL subchannels are TRANSIENT_FAILURE => policy is
+   *                                                   TRANSIENT_FAILURE.
+   *    CHECK: subchannel_list->num_transient_failures ==
+   *           subchannel_list->num_subchannels.
+   */
+  if (num_ready_ > 0) {
+    /* 1) READY */
+    p->channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_READY, absl::make_unique<Picker>(p, this));
+  } else if (num_connecting_ > 0) {
+    /* 2) CONNECTING */
+    p->channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_CONNECTING,
+        absl::make_unique<QueuePicker>(p->Ref(DEBUG_LOCATION, "QueuePicker")));
+  } else if (num_transient_failure_ == num_subchannels()) {
+    /* 3) TRANSIENT_FAILURE */
+    grpc_error* error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                               "connections to all backends failing"),
+                           GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+    p->channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_TRANSIENT_FAILURE,
+        absl::make_unique<TransientFailurePicker>(error));
+  }
+}
+
+void RoundRobin::RoundRobinSubchannelList::
+    UpdateRoundRobinStateFromSubchannelStateCountsLocked() {
+  RoundRobin* p = static_cast<RoundRobin*>(policy());
+  if (num_ready_ > 0) {
+    if (p->subchannel_list_.get() != this) {
+      // Promote this list to p->subchannel_list_.
+      // This list must be p->latest_pending_subchannel_list_, because
+      // any previous update would have been shut down already and
+      // therefore we would not be receiving a notification for them.
+      GPR_ASSERT(p->latest_pending_subchannel_list_.get() == this);
+      GPR_ASSERT(!shutting_down());
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+        const size_t old_num_subchannels =
+            p->subchannel_list_ != nullptr
+                ? p->subchannel_list_->num_subchannels()
+                : 0;
+        gpr_log(GPR_INFO,
+                "[RR %p] phasing out subchannel list %p (size %" PRIuPTR
+                ") in favor of %p (size %" PRIuPTR ")",
+                p, p->subchannel_list_.get(), old_num_subchannels, this,
+                num_subchannels());
+      }
+      p->subchannel_list_ = std::move(p->latest_pending_subchannel_list_);
+    }
+  }
+  // Update the RR policy's connectivity state if needed.
+  MaybeUpdateRoundRobinConnectivityStateLocked();
+}
+
+void RoundRobin::RoundRobinSubchannelData::UpdateConnectivityStateLocked(
+    grpc_connectivity_state connectivity_state) {
+  RoundRobin* p = static_cast<RoundRobin*>(subchannel_list()->policy());
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(
+        GPR_INFO,
+        "[RR %p] connectivity changed for subchannel %p, subchannel_list %p "
+        "(index %" PRIuPTR " of %" PRIuPTR "): prev_state=%s new_state=%s",
+        p, subchannel(), subchannel_list(), Index(),
+        subchannel_list()->num_subchannels(),
+        ConnectivityStateName(last_connectivity_state_),
+        ConnectivityStateName(connectivity_state));
+  }
+  // Decide what state to report for aggregation purposes.
+  // If we haven't seen a failure since the last time we were in state
+  // READY, then we report the state change as-is.  However, once we do see
+  // a failure, we report TRANSIENT_FAILURE and do not report any subsequent
+  // state changes until we go back into state READY.
+  if (!seen_failure_since_ready_) {
+    if (connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+      seen_failure_since_ready_ = true;
+    }
+    subchannel_list()->UpdateStateCountersLocked(last_connectivity_state_,
+                                                 connectivity_state);
+  } else {
+    if (connectivity_state == GRPC_CHANNEL_READY) {
+      seen_failure_since_ready_ = false;
+      subchannel_list()->UpdateStateCountersLocked(
+          GRPC_CHANNEL_TRANSIENT_FAILURE, connectivity_state);
+    }
+  }
+  // Record last seen connectivity state.
+  last_connectivity_state_ = connectivity_state;
+}
+
+void RoundRobin::RoundRobinSubchannelData::ProcessConnectivityChangeLocked(
+    grpc_connectivity_state connectivity_state) {
+  RoundRobin* p = static_cast<RoundRobin*>(subchannel_list()->policy());
+  GPR_ASSERT(subchannel() != nullptr);
+  // If the new state is TRANSIENT_FAILURE, re-resolve.
+  // Only do this if we've started watching, not at startup time.
+  // Otherwise, if the subchannel was already in state TRANSIENT_FAILURE
+  // when the subchannel list was created, we'd wind up in a constant
+  // loop of re-resolution.
+  // Also attempt to reconnect.
+  if (connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+      gpr_log(GPR_INFO,
+              "[RR %p] Subchannel %p has gone into TRANSIENT_FAILURE. "
+              "Requesting re-resolution",
+              p, subchannel());
+    }
+    p->channel_control_helper()->RequestReresolution();
+    subchannel()->AttemptToConnect();
+  }
+  // Update state counters.
+  UpdateConnectivityStateLocked(connectivity_state);
+  // Update overall state and renew notification.
+  subchannel_list()->UpdateRoundRobinStateFromSubchannelStateCountsLocked();
+}
+
+void RoundRobin::UpdateLocked(UpdateArgs args) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+    gpr_log(GPR_INFO, "[RR %p] received update with %" PRIuPTR " addresses",
+            this, args.addresses.size());
+  }
+  // Replace latest_pending_subchannel_list_.
+  if (latest_pending_subchannel_list_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
+      gpr_log(GPR_INFO,
+              "[RR %p] Shutting down previous pending subchannel list %p", this,
+              latest_pending_subchannel_list_.get());
+    }
+  }
+  latest_pending_subchannel_list_ = MakeOrphanable<RoundRobinSubchannelList>(
+      this, &grpc_lb_round_robin_trace, args.addresses, *args.args);
+  if (latest_pending_subchannel_list_->num_subchannels() == 0) {
+    // If the new list is empty, immediately promote the new list to the
+    // current list and transition to TRANSIENT_FAILURE.
+    grpc_error* error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Empty update"),
+                           GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+    channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_TRANSIENT_FAILURE,
+        absl::make_unique<TransientFailurePicker>(error));
+    subchannel_list_ = std::move(latest_pending_subchannel_list_);
+  } else if (subchannel_list_ == nullptr) {
+    // If there is no current list, immediately promote the new list to
+    // the current list and start watching it.
+    subchannel_list_ = std::move(latest_pending_subchannel_list_);
+    subchannel_list_->StartWatchingLocked();
+  } else {
+    // Start watching the pending list.  It will get swapped into the
+    // current list when it reports READY.
+    latest_pending_subchannel_list_->StartWatchingLocked();
+  }
+}
+
+class RoundRobinConfig : public LoadBalancingPolicy::Config {
+ public:
+  const char* name() const override { return kRoundRobin; }
+};
+
+//
+// factory
+//
+
+class RoundRobinFactory : public LoadBalancingPolicyFactory {
+ public:
+  OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args args) const override {
+    return MakeOrphanable<RoundRobin>(std::move(args));
+  }
+
+  const char* name() const override { return kRoundRobin; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& /*json*/, grpc_error** /*error*/) const override {
+    return MakeRefCounted<RoundRobinConfig>();
+  }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_lb_policy_round_robin_init() {
+  grpc_core::LoadBalancingPolicyRegistry::Builder::
+      RegisterLoadBalancingPolicyFactory(
+          absl::make_unique<grpc_core::RoundRobinFactory>());
+}
+
+void grpc_lb_policy_round_robin_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h
new file mode 100644
index 0000000..4932a68
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h	
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+// TODO(roth): Should not need the include of subchannel.h here, since
+// that implementation should be hidden from the LB policy API.
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/filters/client_channel/subchannel_interface.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+// Code for maintaining a list of subchannels within an LB policy.
+//
+// To use this, callers must create their own subclasses, like so:
+/*
+
+class MySubchannelList;  // Forward declaration.
+
+class MySubchannelData
+    : public SubchannelData<MySubchannelList, MySubchannelData> {
+ public:
+  void ProcessConnectivityChangeLocked(
+      grpc_connectivity_state connectivity_state) override {
+    // ...code to handle connectivity changes...
+  }
+};
+
+class MySubchannelList
+    : public SubchannelList<MySubchannelList, MySubchannelData> {
+};
+
+*/
+// All methods will be called from within the client_channel combiner.
+
+namespace grpc_core {
+
+// Forward declaration.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelList;
+
+// Stores data for a particular subchannel in a subchannel list.
+// Callers must create a subclass that implements the
+// ProcessConnectivityChangeLocked() method.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelData {
+ public:
+  // Returns a pointer to the subchannel list containing this object.
+  SubchannelListType* subchannel_list() const {
+    return static_cast<SubchannelListType*>(subchannel_list_);
+  }
+
+  // Returns the index into the subchannel list of this object.
+  size_t Index() const {
+    return static_cast<size_t>(static_cast<const SubchannelDataType*>(this) -
+                               subchannel_list_->subchannel(0));
+  }
+
+  // Returns a pointer to the subchannel.
+  SubchannelInterface* subchannel() const { return subchannel_.get(); }
+
+  // Synchronously checks the subchannel's connectivity state.
+  // Must not be called while there is a connectivity notification
+  // pending (i.e., between calling StartConnectivityWatchLocked() and
+  // calling CancelConnectivityWatchLocked()).
+  grpc_connectivity_state CheckConnectivityStateLocked() {
+    GPR_ASSERT(pending_watcher_ == nullptr);
+    connectivity_state_ = subchannel_->CheckConnectivityState();
+    return connectivity_state_;
+  }
+
+  // Resets the connection backoff.
+  // TODO(roth): This method should go away when we move the backoff
+  // code out of the subchannel and into the LB policies.
+  void ResetBackoffLocked();
+
+  // Starts watching the connectivity state of the subchannel.
+  // ProcessConnectivityChangeLocked() will be called whenever the
+  // connectivity state changes.
+  void StartConnectivityWatchLocked();
+
+  // Cancels watching the connectivity state of the subchannel.
+  void CancelConnectivityWatchLocked(const char* reason);
+
+  // Cancels any pending connectivity watch and unrefs the subchannel.
+  void ShutdownLocked();
+
+ protected:
+  SubchannelData(
+      SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list,
+      const ServerAddress& address,
+      RefCountedPtr<SubchannelInterface> subchannel);
+
+  virtual ~SubchannelData();
+
+  // After StartConnectivityWatchLocked() is called, this method will be
+  // invoked whenever the subchannel's connectivity state changes.
+  // To stop watching, use CancelConnectivityWatchLocked().
+  virtual void ProcessConnectivityChangeLocked(
+      grpc_connectivity_state connectivity_state) = 0;
+
+ private:
+  // Watcher for subchannel connectivity state.
+  class Watcher
+      : public SubchannelInterface::ConnectivityStateWatcherInterface {
+   public:
+    Watcher(
+        SubchannelData<SubchannelListType, SubchannelDataType>* subchannel_data,
+        RefCountedPtr<SubchannelListType> subchannel_list)
+        : subchannel_data_(subchannel_data),
+          subchannel_list_(std::move(subchannel_list)) {}
+
+    ~Watcher() { subchannel_list_.reset(DEBUG_LOCATION, "Watcher dtor"); }
+
+    void OnConnectivityStateChange(grpc_connectivity_state new_state) override;
+
+    grpc_pollset_set* interested_parties() override {
+      return subchannel_list_->policy()->interested_parties();
+    }
+
+   private:
+    SubchannelData<SubchannelListType, SubchannelDataType>* subchannel_data_;
+    RefCountedPtr<SubchannelListType> subchannel_list_;
+  };
+
+  // Unrefs the subchannel.
+  void UnrefSubchannelLocked(const char* reason);
+
+  // Backpointer to owning subchannel list.  Not owned.
+  SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list_;
+  // The subchannel.
+  RefCountedPtr<SubchannelInterface> subchannel_;
+  // Will be non-null when the subchannel's state is being watched.
+  SubchannelInterface::ConnectivityStateWatcherInterface* pending_watcher_ =
+      nullptr;
+  // Data updated by the watcher.
+  grpc_connectivity_state connectivity_state_;
+};
+
+// A list of subchannels.
+template <typename SubchannelListType, typename SubchannelDataType>
+class SubchannelList : public InternallyRefCounted<SubchannelListType> {
+ public:
+  typedef InlinedVector<SubchannelDataType, 10> SubchannelVector;
+
+  // The number of subchannels in the list.
+  size_t num_subchannels() const { return subchannels_.size(); }
+
+  // The data for the subchannel at a particular index.
+  SubchannelDataType* subchannel(size_t index) { return &subchannels_[index]; }
+
+  // Returns true if the subchannel list is shutting down.
+  bool shutting_down() const { return shutting_down_; }
+
+  // Accessors.
+  LoadBalancingPolicy* policy() const { return policy_; }
+  TraceFlag* tracer() const { return tracer_; }
+
+  // Resets connection backoff of all subchannels.
+  // TODO(roth): We will probably need to rethink this as part of moving
+  // the backoff code out of subchannels and into LB policies.
+  void ResetBackoffLocked();
+
+  void Orphan() override {
+    ShutdownLocked();
+    InternallyRefCounted<SubchannelListType>::Unref(DEBUG_LOCATION, "shutdown");
+  }
+
+ protected:
+  SubchannelList(LoadBalancingPolicy* policy, TraceFlag* tracer,
+                 const ServerAddressList& addresses,
+                 LoadBalancingPolicy::ChannelControlHelper* helper,
+                 const grpc_channel_args& args);
+
+  virtual ~SubchannelList();
+
+ private:
+  // For accessing Ref() and Unref().
+  friend class SubchannelData<SubchannelListType, SubchannelDataType>;
+
+  void ShutdownLocked();
+
+  // Backpointer to owning policy.
+  LoadBalancingPolicy* policy_;
+
+  TraceFlag* tracer_;
+
+  // The list of subchannels.
+  SubchannelVector subchannels_;
+
+  // Is this list shutting down? This may be true due to the shutdown of the
+  // policy itself or because a newer update has arrived while this one hadn't
+  // finished processing.
+  bool shutting_down_ = false;
+};
+
+//
+// implementation -- no user-servicable parts below
+//
+
+//
+// SubchannelData::Watcher
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::Watcher::
+    OnConnectivityStateChange(grpc_connectivity_state new_state) {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): connectivity changed: state=%s, "
+            "shutting_down=%d, pending_watcher=%p",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_.get(), subchannel_data_->Index(),
+            subchannel_list_->num_subchannels(),
+            subchannel_data_->subchannel_.get(),
+            ConnectivityStateName(new_state), subchannel_list_->shutting_down(),
+            subchannel_data_->pending_watcher_);
+  }
+  if (!subchannel_list_->shutting_down() &&
+      subchannel_data_->pending_watcher_ != nullptr) {
+    subchannel_data_->connectivity_state_ = new_state;
+    // Call the subclass's ProcessConnectivityChangeLocked() method.
+    subchannel_data_->ProcessConnectivityChangeLocked(new_state);
+  }
+}
+
+//
+// SubchannelData
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelData<SubchannelListType, SubchannelDataType>::SubchannelData(
+    SubchannelList<SubchannelListType, SubchannelDataType>* subchannel_list,
+    const ServerAddress& /*address*/,
+    RefCountedPtr<SubchannelInterface> subchannel)
+    : subchannel_list_(subchannel_list),
+      subchannel_(std::move(subchannel)),
+      // We assume that the current state is IDLE.  If not, we'll get a
+      // callback telling us that.
+      connectivity_state_(GRPC_CHANNEL_IDLE) {}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelData<SubchannelListType, SubchannelDataType>::~SubchannelData() {
+  GPR_ASSERT(subchannel_ == nullptr);
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::
+    UnrefSubchannelLocked(const char* reason) {
+  if (subchannel_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+      gpr_log(GPR_INFO,
+              "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+              " (subchannel %p): unreffing subchannel (%s)",
+              subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+              subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+              subchannel_.get(), reason);
+    }
+    subchannel_.reset();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType,
+                    SubchannelDataType>::ResetBackoffLocked() {
+  if (subchannel_ != nullptr) {
+    subchannel_->ResetBackoff();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType,
+                    SubchannelDataType>::StartConnectivityWatchLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): starting watch (from %s)",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+            subchannel_.get(), ConnectivityStateName(connectivity_state_));
+  }
+  GPR_ASSERT(pending_watcher_ == nullptr);
+  pending_watcher_ =
+      new Watcher(this, subchannel_list()->Ref(DEBUG_LOCATION, "Watcher"));
+  subchannel_->WatchConnectivityState(
+      connectivity_state_,
+      std::unique_ptr<SubchannelInterface::ConnectivityStateWatcherInterface>(
+          pending_watcher_));
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::
+    CancelConnectivityWatchLocked(const char* reason) {
+  if (GRPC_TRACE_FLAG_ENABLED(*subchannel_list_->tracer())) {
+    gpr_log(GPR_INFO,
+            "[%s %p] subchannel list %p index %" PRIuPTR " of %" PRIuPTR
+            " (subchannel %p): canceling connectivity watch (%s)",
+            subchannel_list_->tracer()->name(), subchannel_list_->policy(),
+            subchannel_list_, Index(), subchannel_list_->num_subchannels(),
+            subchannel_.get(), reason);
+  }
+  if (pending_watcher_ != nullptr) {
+    subchannel_->CancelConnectivityStateWatch(pending_watcher_);
+    pending_watcher_ = nullptr;
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelData<SubchannelListType, SubchannelDataType>::ShutdownLocked() {
+  if (pending_watcher_ != nullptr) CancelConnectivityWatchLocked("shutdown");
+  UnrefSubchannelLocked("shutdown");
+}
+
+//
+// SubchannelList
+//
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelList<SubchannelListType, SubchannelDataType>::SubchannelList(
+    LoadBalancingPolicy* policy, TraceFlag* tracer,
+    const ServerAddressList& addresses,
+    LoadBalancingPolicy::ChannelControlHelper* helper,
+    const grpc_channel_args& args)
+    : InternallyRefCounted<SubchannelListType>(tracer),
+      policy_(policy),
+      tracer_(tracer) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO,
+            "[%s %p] Creating subchannel list %p for %" PRIuPTR " subchannels",
+            tracer_->name(), policy, this, addresses.size());
+  }
+  subchannels_.reserve(addresses.size());
+  // We need to remove the LB addresses in order to be able to compare the
+  // subchannel keys of subchannels from a different batch of addresses.
+  // We remove the service config, since it will be passed into the
+  // subchannel via call context.
+  static const char* keys_to_remove[] = {GRPC_ARG_SUBCHANNEL_ADDRESS,
+                                         GRPC_ARG_SERVICE_CONFIG};
+  // Create a subchannel for each address.
+  for (size_t i = 0; i < addresses.size(); i++) {
+    // TODO(roth): we should ideally hide this from the LB policy code. In
+    // principle, if we're dealing with this special case in the client_channel
+    // code for selecting grpclb, then we should also strip out these addresses
+    // there if we're not using grpclb.
+    if (addresses[i].IsBalancer()) {
+      continue;
+    }
+    InlinedVector<grpc_arg, 3> args_to_add;
+    const size_t subchannel_address_arg_index = args_to_add.size();
+    args_to_add.emplace_back(
+        Subchannel::CreateSubchannelAddressArg(&addresses[i].address()));
+    if (addresses[i].args() != nullptr) {
+      for (size_t j = 0; j < addresses[i].args()->num_args; ++j) {
+        args_to_add.emplace_back(addresses[i].args()->args[j]);
+      }
+    }
+    grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+        &args, keys_to_remove, GPR_ARRAY_SIZE(keys_to_remove),
+        args_to_add.data(), args_to_add.size());
+    gpr_free(args_to_add[subchannel_address_arg_index].value.string);
+    RefCountedPtr<SubchannelInterface> subchannel =
+        helper->CreateSubchannel(*new_args);
+    grpc_channel_args_destroy(new_args);
+    if (subchannel == nullptr) {
+      // Subchannel could not be created.
+      if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+        char* address_uri = grpc_sockaddr_to_uri(&addresses[i].address());
+        gpr_log(GPR_INFO,
+                "[%s %p] could not create subchannel for address uri %s, "
+                "ignoring",
+                tracer_->name(), policy_, address_uri);
+        gpr_free(address_uri);
+      }
+      continue;
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+      char* address_uri = grpc_sockaddr_to_uri(&addresses[i].address());
+      gpr_log(GPR_INFO,
+              "[%s %p] subchannel list %p index %" PRIuPTR
+              ": Created subchannel %p for address uri %s",
+              tracer_->name(), policy_, this, subchannels_.size(),
+              subchannel.get(), address_uri);
+      gpr_free(address_uri);
+    }
+    subchannels_.emplace_back(this, addresses[i], std::move(subchannel));
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+SubchannelList<SubchannelListType, SubchannelDataType>::~SubchannelList() {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[%s %p] Destroying subchannel_list %p", tracer_->name(),
+            policy_, this);
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelList<SubchannelListType, SubchannelDataType>::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "[%s %p] Shutting down subchannel_list %p",
+            tracer_->name(), policy_, this);
+  }
+  GPR_ASSERT(!shutting_down_);
+  shutting_down_ = true;
+  for (size_t i = 0; i < subchannels_.size(); i++) {
+    SubchannelDataType* sd = &subchannels_[i];
+    sd->ShutdownLocked();
+  }
+}
+
+template <typename SubchannelListType, typename SubchannelDataType>
+void SubchannelList<SubchannelListType,
+                    SubchannelDataType>::ResetBackoffLocked() {
+  for (size_t i = 0; i < subchannels_.size(); i++) {
+    SubchannelDataType* sd = &subchannels_[i];
+    sd->ResetBackoffLocked();
+  }
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_SUBCHANNEL_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/cds.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/cds.cc
new file mode 100644
index 0000000..51e250a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/cds.cc	
@@ -0,0 +1,370 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_cds_lb_trace(false, "cds_lb");
+
+namespace {
+
+constexpr char kCds[] = "cds_experimental";
+
+// Config for this LB policy.
+class CdsConfig : public LoadBalancingPolicy::Config {
+ public:
+  explicit CdsConfig(std::string cluster) : cluster_(std::move(cluster)) {}
+  const std::string& cluster() const { return cluster_; }
+  const char* name() const override { return kCds; }
+
+ private:
+  std::string cluster_;
+};
+
+// CDS LB policy.
+class CdsLb : public LoadBalancingPolicy {
+ public:
+  explicit CdsLb(Args args);
+
+  const char* name() const override { return kCds; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ResetBackoffLocked() override;
+
+ private:
+  // Watcher for getting cluster data from XdsClient.
+  class ClusterWatcher : public XdsClient::ClusterWatcherInterface {
+   public:
+    explicit ClusterWatcher(RefCountedPtr<CdsLb> parent)
+        : parent_(std::move(parent)) {}
+    void OnClusterChanged(XdsApi::CdsUpdate cluster_data) override;
+    void OnError(grpc_error* error) override;
+
+   private:
+    RefCountedPtr<CdsLb> parent_;
+  };
+
+  // Delegating helper to be passed to child policy.
+  class Helper : public ChannelControlHelper {
+   public:
+    explicit Helper(RefCountedPtr<CdsLb> parent) : parent_(std::move(parent)) {}
+    RefCountedPtr<SubchannelInterface> CreateSubchannel(
+        const grpc_channel_args& args) override;
+    void UpdateState(grpc_connectivity_state state,
+                     std::unique_ptr<SubchannelPicker> picker) override;
+    void RequestReresolution() override;
+    void AddTraceEvent(TraceSeverity severity, StringView message) override;
+
+   private:
+    RefCountedPtr<CdsLb> parent_;
+  };
+
+  ~CdsLb();
+
+  void ShutdownLocked() override;
+
+  RefCountedPtr<CdsConfig> config_;
+
+  // Current channel args from the resolver.
+  const grpc_channel_args* args_ = nullptr;
+
+  // The xds client.
+  RefCountedPtr<XdsClient> xds_client_;
+  // A pointer to the cluster watcher, to be used when cancelling the watch.
+  // Note that this is not owned, so this pointer must never be derefernced.
+  ClusterWatcher* cluster_watcher_ = nullptr;
+
+  // Child LB policy.
+  OrphanablePtr<LoadBalancingPolicy> child_policy_;
+
+  // Internal state.
+  bool shutting_down_ = false;
+};
+
+//
+// CdsLb::ClusterWatcher
+//
+
+void CdsLb::ClusterWatcher::OnClusterChanged(XdsApi::CdsUpdate cluster_data) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO,
+            "[cdslb %p] received CDS update from xds client %p: "
+            "eds_service_name=%s lrs_load_reporting_server_name=%s",
+            parent_.get(), parent_->xds_client_.get(),
+            cluster_data.eds_service_name.c_str(),
+            cluster_data.lrs_load_reporting_server_name.has_value()
+                ? cluster_data.lrs_load_reporting_server_name.value().c_str()
+                : "(unset)");
+  }
+  // Construct config for child policy.
+  Json::Object child_config = {
+      {"edsServiceName",
+       (cluster_data.eds_service_name.empty() ? parent_->config_->cluster()
+                                              : cluster_data.eds_service_name)},
+  };
+  if (cluster_data.lrs_load_reporting_server_name.has_value()) {
+    child_config["lrsLoadReportingServerName"] =
+        cluster_data.lrs_load_reporting_server_name.value();
+  }
+  Json json = Json::Array{
+      Json::Object{
+          {"xds_experimental", std::move(child_config)},
+      },
+  };
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    std::string json_str = json.Dump();
+    gpr_log(GPR_INFO, "[cdslb %p] generated config for child policy: %s",
+            parent_.get(), json_str.c_str());
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  RefCountedPtr<LoadBalancingPolicy::Config> config =
+      LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(json, &error);
+  if (error != GRPC_ERROR_NONE) {
+    OnError(error);
+    return;
+  }
+  // Create child policy if not already present.
+  if (parent_->child_policy_ == nullptr) {
+    LoadBalancingPolicy::Args args;
+    args.combiner = parent_->combiner();
+    args.args = parent_->args_;
+    args.channel_control_helper = absl::make_unique<Helper>(parent_->Ref());
+    parent_->child_policy_ =
+        LoadBalancingPolicyRegistry::CreateLoadBalancingPolicy(
+            "xds_experimental", std::move(args));
+    if (parent_->child_policy_ == nullptr) {
+      OnError(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "failed to create xds_experimental child policy"));
+      return;
+    }
+    grpc_pollset_set_add_pollset_set(
+        parent_->child_policy_->interested_parties(),
+        parent_->interested_parties());
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+      gpr_log(GPR_INFO, "[cdslb %p] created child policy xds_experimental (%p)",
+              parent_.get(), parent_->child_policy_.get());
+    }
+  }
+  // Update child policy.
+  UpdateArgs args;
+  args.config = std::move(config);
+  args.args = grpc_channel_args_copy(parent_->args_);
+  parent_->child_policy_->UpdateLocked(std::move(args));
+}
+
+void CdsLb::ClusterWatcher::OnError(grpc_error* error) {
+  gpr_log(GPR_ERROR, "[cdslb %p] xds error obtaining data for cluster %s: %s",
+          parent_.get(), parent_->config_->cluster().c_str(),
+          grpc_error_string(error));
+  // Go into TRANSIENT_FAILURE if we have not yet created the child
+  // policy (i.e., we have not yet received data from xds).  Otherwise,
+  // we keep running with the data we had previously.
+  if (parent_->child_policy_ == nullptr) {
+    parent_->channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_TRANSIENT_FAILURE,
+        absl::make_unique<TransientFailurePicker>(error));
+  } else {
+    GRPC_ERROR_UNREF(error);
+  }
+}
+
+//
+// CdsLb::Helper
+//
+
+RefCountedPtr<SubchannelInterface> CdsLb::Helper::CreateSubchannel(
+    const grpc_channel_args& args) {
+  if (parent_->shutting_down_) return nullptr;
+  return parent_->channel_control_helper()->CreateSubchannel(args);
+}
+
+void CdsLb::Helper::UpdateState(grpc_connectivity_state state,
+                                std::unique_ptr<SubchannelPicker> picker) {
+  if (parent_->shutting_down_) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] state updated by child: %s", this,
+            ConnectivityStateName(state));
+  }
+  parent_->channel_control_helper()->UpdateState(state, std::move(picker));
+}
+
+void CdsLb::Helper::RequestReresolution() {
+  if (parent_->shutting_down_) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] Re-resolution requested from child policy.",
+            parent_.get());
+  }
+  parent_->channel_control_helper()->RequestReresolution();
+}
+
+void CdsLb::Helper::AddTraceEvent(TraceSeverity severity, StringView message) {
+  if (parent_->shutting_down_) return;
+  parent_->channel_control_helper()->AddTraceEvent(severity, message);
+}
+
+//
+// CdsLb
+//
+
+CdsLb::CdsLb(Args args)
+    : LoadBalancingPolicy(std::move(args)),
+      xds_client_(XdsClient::GetFromChannelArgs(*args.args)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] created -- using xds client %p from channel",
+            this, xds_client_.get());
+  }
+}
+
+CdsLb::~CdsLb() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] destroying cds LB policy", this);
+  }
+  grpc_channel_args_destroy(args_);
+}
+
+void CdsLb::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] shutting down", this);
+  }
+  shutting_down_ = true;
+  if (child_policy_ != nullptr) {
+    grpc_pollset_set_del_pollset_set(child_policy_->interested_parties(),
+                                     interested_parties());
+    child_policy_.reset();
+  }
+  if (xds_client_ != nullptr) {
+    if (cluster_watcher_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+        gpr_log(GPR_INFO, "[cdslb %p] cancelling watch for cluster %s", this,
+                config_->cluster().c_str());
+      }
+      xds_client_->CancelClusterDataWatch(
+          StringView(config_->cluster().c_str()), cluster_watcher_);
+    }
+    xds_client_.reset();
+  }
+}
+
+void CdsLb::ResetBackoffLocked() {
+  if (child_policy_ != nullptr) child_policy_->ResetBackoffLocked();
+}
+
+void CdsLb::UpdateLocked(UpdateArgs args) {
+  // Update config.
+  auto old_config = std::move(config_);
+  config_ = std::move(args.config);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+    gpr_log(GPR_INFO, "[cdslb %p] received update: cluster=%s", this,
+            config_->cluster().c_str());
+  }
+  // Update args.
+  grpc_channel_args_destroy(args_);
+  args_ = args.args;
+  args.args = nullptr;
+  // If cluster name changed, cancel watcher and restart.
+  if (old_config == nullptr || old_config->cluster() != config_->cluster()) {
+    if (old_config != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+        gpr_log(GPR_INFO, "[cdslb %p] cancelling watch for cluster %s", this,
+                old_config->cluster().c_str());
+      }
+      xds_client_->CancelClusterDataWatch(
+          StringView(old_config->cluster().c_str()), cluster_watcher_,
+          /*delay_unsubscription=*/true);
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_cds_lb_trace)) {
+      gpr_log(GPR_INFO, "[cdslb %p] starting watch for cluster %s", this,
+              config_->cluster().c_str());
+    }
+    auto watcher = absl::make_unique<ClusterWatcher>(Ref());
+    cluster_watcher_ = watcher.get();
+    xds_client_->WatchClusterData(StringView(config_->cluster().c_str()),
+                                  std::move(watcher));
+  }
+}
+
+//
+// factory
+//
+
+class CdsFactory : public LoadBalancingPolicyFactory {
+ public:
+  OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args args) const override {
+    return MakeOrphanable<CdsLb>(std::move(args));
+  }
+
+  const char* name() const override { return kCds; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error) const override {
+    GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+    if (json.type() == Json::Type::JSON_NULL) {
+      // xds was mentioned as a policy in the deprecated loadBalancingPolicy
+      // field or in the client API.
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:loadBalancingPolicy error:cds policy requires configuration. "
+          "Please use loadBalancingConfig field of service config instead.");
+      return nullptr;
+    }
+    std::vector<grpc_error*> error_list;
+    std::string cluster;
+    auto it = json.object_value().find("cluster");
+    if (it == json.object_value().end()) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "required field 'cluster' not present"));
+    } else if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:cluster error:type should be string"));
+    } else {
+      cluster = it->second.string_value();
+    }
+    if (!error_list.empty()) {
+      *error = GRPC_ERROR_CREATE_FROM_VECTOR("Cds Parser", &error_list);
+      return nullptr;
+    }
+    return MakeRefCounted<CdsConfig>(std::move(cluster));
+  }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+//
+// Plugin registration
+//
+
+void grpc_lb_policy_cds_init() {
+  grpc_core::LoadBalancingPolicyRegistry::Builder::
+      RegisterLoadBalancingPolicyFactory(
+          absl::make_unique<grpc_core::CdsFactory>());
+}
+
+void grpc_lb_policy_cds_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.cc
new file mode 100644
index 0000000..1ba5f70
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.cc	
@@ -0,0 +1,1754 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include "absl/types/optional.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h"
+#include "src/core/ext/filters/client_channel/lb_policy/xds/xds.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define GRPC_XDS_DEFAULT_FALLBACK_TIMEOUT_MS 10000
+#define GRPC_XDS_DEFAULT_LOCALITY_RETENTION_INTERVAL_MS (15 * 60 * 1000)
+#define GRPC_XDS_DEFAULT_FAILOVER_TIMEOUT_MS 10000
+
+namespace grpc_core {
+
+TraceFlag grpc_lb_xds_trace(false, "xds_lb");
+
+namespace {
+
+constexpr char kXds[] = "xds_experimental";
+
+class XdsConfig : public LoadBalancingPolicy::Config {
+ public:
+  XdsConfig(RefCountedPtr<LoadBalancingPolicy::Config> child_policy,
+            RefCountedPtr<LoadBalancingPolicy::Config> fallback_policy,
+            std::string eds_service_name,
+            absl::optional<std::string> lrs_load_reporting_server_name)
+      : child_policy_(std::move(child_policy)),
+        fallback_policy_(std::move(fallback_policy)),
+        eds_service_name_(std::move(eds_service_name)),
+        lrs_load_reporting_server_name_(
+            std::move(lrs_load_reporting_server_name)) {}
+
+  const char* name() const override { return kXds; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> child_policy() const {
+    return child_policy_;
+  }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> fallback_policy() const {
+    return fallback_policy_;
+  }
+
+  const char* eds_service_name() const {
+    return eds_service_name_.empty() ? nullptr : eds_service_name_.c_str();
+  };
+
+  const absl::optional<std::string>& lrs_load_reporting_server_name() const {
+    return lrs_load_reporting_server_name_;
+  };
+
+ private:
+  RefCountedPtr<LoadBalancingPolicy::Config> child_policy_;
+  RefCountedPtr<LoadBalancingPolicy::Config> fallback_policy_;
+  std::string eds_service_name_;
+  absl::optional<std::string> lrs_load_reporting_server_name_;
+};
+
+class XdsLb : public LoadBalancingPolicy {
+ public:
+  explicit XdsLb(Args args);
+
+  const char* name() const override { return kXds; }
+
+  void UpdateLocked(UpdateArgs args) override;
+  void ResetBackoffLocked() override;
+
+ private:
+  class EndpointWatcher;
+
+  // A simple wrapper to convert the picker returned from a locality's child
+  // policy as a unique_ptr<> to a RefCountedPtr<>.  This allows it to be
+  // referenced by both the picker and the locality.
+  class RefCountedEndpointPicker : public RefCounted<RefCountedEndpointPicker> {
+   public:
+    explicit RefCountedEndpointPicker(std::unique_ptr<SubchannelPicker> picker)
+        : picker_(std::move(picker)) {}
+    PickResult Pick(PickArgs args) { return picker_->Pick(std::move(args)); }
+
+   private:
+    std::unique_ptr<SubchannelPicker> picker_;
+  };
+
+  // A picker that wraps the RefCountedEndpointPicker and performs load
+  // reporting for the locality.
+  class LoadReportingPicker : public RefCounted<LoadReportingPicker> {
+   public:
+    LoadReportingPicker(RefCountedPtr<RefCountedEndpointPicker> picker,
+                        RefCountedPtr<XdsClusterLocalityStats> locality_stats)
+        : picker_(std::move(picker)),
+          locality_stats_(std::move(locality_stats)) {}
+
+    PickResult Pick(PickArgs args);
+
+    RefCountedEndpointPicker* picker() const { return picker_.get(); }
+    XdsClusterLocalityStats* locality_stats() const {
+      return locality_stats_.get();
+    }
+
+   private:
+    RefCountedPtr<RefCountedEndpointPicker> picker_;
+    RefCountedPtr<XdsClusterLocalityStats> locality_stats_;
+  };
+
+  // A picker that uses a stateless weighting algorithm to pick the locality
+  // to use for each request.
+  class LocalityPicker : public SubchannelPicker {
+   public:
+    // Maintains a weighted list of pickers from each locality that is in ready
+    // state. The first element in the pair represents the end of a range
+    // proportional to the locality's weight. The start of the range is the
+    // previous value in the vector and is 0 for the first element.
+    using PickerList =
+        InlinedVector<std::pair<uint32_t, RefCountedPtr<LoadReportingPicker>>,
+                      1>;
+    LocalityPicker(XdsLb* xds_policy, PickerList pickers)
+        : drop_stats_(xds_policy->drop_stats_),
+          drop_config_(xds_policy->drop_config_),
+          pickers_(std::move(pickers)) {}
+
+    PickResult Pick(PickArgs args) override;
+
+   private:
+    // Calls the picker of the locality that the key falls within.
+    PickResult PickFromLocality(const uint32_t key, PickArgs args);
+
+    RefCountedPtr<XdsClusterDropStats> drop_stats_;
+    RefCountedPtr<XdsApi::DropConfig> drop_config_;
+    PickerList pickers_;
+  };
+
+  class FallbackHelper : public ChannelControlHelper {
+   public:
+    explicit FallbackHelper(RefCountedPtr<XdsLb> parent)
+        : parent_(std::move(parent)) {}
+
+    ~FallbackHelper() { parent_.reset(DEBUG_LOCATION, "FallbackHelper"); }
+
+    RefCountedPtr<SubchannelInterface> CreateSubchannel(
+        const grpc_channel_args& args) override;
+    void UpdateState(grpc_connectivity_state state,
+                     std::unique_ptr<SubchannelPicker> picker) override;
+    void RequestReresolution() override;
+    void AddTraceEvent(TraceSeverity severity, StringView message) override;
+
+   private:
+    RefCountedPtr<XdsLb> parent_;
+  };
+
+  // Each LocalityMap holds a ref to the XdsLb.
+  class LocalityMap : public InternallyRefCounted<LocalityMap> {
+   public:
+    // Each Locality holds a ref to the LocalityMap it is in.
+    class Locality : public InternallyRefCounted<Locality> {
+     public:
+      Locality(RefCountedPtr<LocalityMap> locality_map,
+               RefCountedPtr<XdsLocalityName> name);
+      ~Locality();
+
+      void UpdateLocked(uint32_t locality_weight, ServerAddressList serverlist,
+                        bool update_locality_stats);
+      void ShutdownLocked();
+      void ResetBackoffLocked();
+      void DeactivateLocked();
+      void Orphan() override;
+
+      uint32_t weight() const { return weight_; }
+
+      grpc_connectivity_state connectivity_state() const {
+        return connectivity_state_;
+      }
+
+      RefCountedPtr<LoadReportingPicker> GetLoadReportingPicker() {
+        // Recreate load reporting picker if stats object has changed.
+        if (load_reporting_picker_ == nullptr ||
+            load_reporting_picker_->picker() != picker_wrapper_.get() ||
+            load_reporting_picker_->locality_stats() != stats_.get()) {
+          load_reporting_picker_ =
+              MakeRefCounted<LoadReportingPicker>(picker_wrapper_, stats_);
+        }
+        return load_reporting_picker_;
+      }
+
+      void set_locality_map(RefCountedPtr<LocalityMap> locality_map) {
+        locality_map_ = std::move(locality_map);
+      }
+
+     private:
+      class Helper : public ChannelControlHelper {
+       public:
+        explicit Helper(RefCountedPtr<Locality> locality)
+            : locality_(std::move(locality)) {}
+
+        ~Helper() { locality_.reset(DEBUG_LOCATION, "Helper"); }
+
+        RefCountedPtr<SubchannelInterface> CreateSubchannel(
+            const grpc_channel_args& args) override;
+        void UpdateState(grpc_connectivity_state state,
+                         std::unique_ptr<SubchannelPicker> picker) override;
+        // This is a no-op, because we get the addresses from the xds
+        // client, which is a watch-based API.
+        void RequestReresolution() override {}
+        void AddTraceEvent(TraceSeverity severity, StringView message) override;
+
+       private:
+        RefCountedPtr<Locality> locality_;
+      };
+
+      // Methods for dealing with the child policy.
+      OrphanablePtr<LoadBalancingPolicy> CreateChildPolicyLocked(
+          const grpc_channel_args* args);
+      grpc_channel_args* CreateChildPolicyArgsLocked(
+          const grpc_channel_args* args);
+
+      void UpdateLocalityStats();
+
+      static void OnDelayedRemovalTimer(void* arg, grpc_error* error);
+      static void OnDelayedRemovalTimerLocked(void* arg, grpc_error* error);
+
+      XdsLb* xds_policy() const { return locality_map_->xds_policy(); }
+
+      // The owning locality map.
+      RefCountedPtr<LocalityMap> locality_map_;
+
+      RefCountedPtr<XdsLocalityName> name_;
+      RefCountedPtr<XdsClusterLocalityStats> stats_;
+      OrphanablePtr<LoadBalancingPolicy> child_policy_;
+      RefCountedPtr<RefCountedEndpointPicker> picker_wrapper_;
+      RefCountedPtr<LoadReportingPicker> load_reporting_picker_;
+      grpc_connectivity_state connectivity_state_ = GRPC_CHANNEL_IDLE;
+      uint32_t weight_;
+
+      // States for delayed removal.
+      grpc_timer delayed_removal_timer_;
+      grpc_closure on_delayed_removal_timer_;
+      bool delayed_removal_timer_callback_pending_ = false;
+      bool shutdown_ = false;
+    };
+
+    LocalityMap(RefCountedPtr<XdsLb> xds_policy, uint32_t priority);
+
+    ~LocalityMap() { xds_policy_.reset(DEBUG_LOCATION, "LocalityMap"); }
+
+    void UpdateLocked(
+        const XdsApi::PriorityListUpdate::LocalityMap& priority_update,
+        bool update_locality_stats);
+    void ResetBackoffLocked();
+    void UpdateXdsPickerLocked();
+    OrphanablePtr<Locality> ExtractLocalityLocked(
+        const RefCountedPtr<XdsLocalityName>& name);
+    void DeactivateLocked();
+    // Returns true if this locality map becomes the currently used one (i.e.,
+    // its priority is selected) after reactivation.
+    bool MaybeReactivateLocked();
+    void MaybeCancelFailoverTimerLocked();
+
+    void Orphan() override;
+
+    XdsLb* xds_policy() const { return xds_policy_.get(); }
+    uint32_t priority() const { return priority_; }
+    grpc_connectivity_state connectivity_state() const {
+      return connectivity_state_;
+    }
+    bool failover_timer_callback_pending() const {
+      return failover_timer_callback_pending_;
+    }
+
+   private:
+    void OnLocalityStateUpdateLocked();
+    void UpdateConnectivityStateLocked();
+    static void OnDelayedRemovalTimer(void* arg, grpc_error* error);
+    static void OnFailoverTimer(void* arg, grpc_error* error);
+    static void OnDelayedRemovalTimerLocked(void* arg, grpc_error* error);
+    static void OnFailoverTimerLocked(void* arg, grpc_error* error);
+
+    const XdsApi::PriorityListUpdate& priority_list_update() const {
+      return xds_policy_->priority_list_update_;
+    }
+    const XdsApi::PriorityListUpdate::LocalityMap* locality_map_update() const {
+      return xds_policy_->priority_list_update_.Find(priority_);
+    }
+
+    RefCountedPtr<XdsLb> xds_policy_;
+
+    std::map<RefCountedPtr<XdsLocalityName>, OrphanablePtr<Locality>,
+             XdsLocalityName::Less>
+        localities_;
+    const uint32_t priority_;
+    grpc_connectivity_state connectivity_state_ = GRPC_CHANNEL_IDLE;
+
+    // States for delayed removal.
+    grpc_timer delayed_removal_timer_;
+    grpc_closure on_delayed_removal_timer_;
+    bool delayed_removal_timer_callback_pending_ = false;
+
+    // States of failover.
+    grpc_timer failover_timer_;
+    grpc_closure on_failover_timer_;
+    bool failover_timer_callback_pending_ = false;
+  };
+
+  ~XdsLb();
+
+  void ShutdownLocked() override;
+
+  const char* eds_service_name() const {
+    if (config_ != nullptr && config_->eds_service_name() != nullptr) {
+      return config_->eds_service_name();
+    }
+    return server_name_.c_str();
+  }
+
+  XdsClient* xds_client() const {
+    return xds_client_from_channel_ != nullptr ? xds_client_from_channel_.get()
+                                               : xds_client_.get();
+  }
+
+  void UpdatePrioritiesLocked(bool update_locality_stats);
+  void UpdateXdsPickerLocked();
+  void MaybeCreateLocalityMapLocked(uint32_t priority);
+  void FailoverOnConnectionFailureLocked();
+  void FailoverOnDisconnectionLocked(uint32_t failed_priority);
+  void SwitchToHigherPriorityLocked(uint32_t priority);
+  void DeactivatePrioritiesLowerThan(uint32_t priority);
+  OrphanablePtr<LocalityMap::Locality> ExtractLocalityLocked(
+      const RefCountedPtr<XdsLocalityName>& name, uint32_t exclude_priority);
+  // Callers should make sure the priority list is non-empty.
+  uint32_t LowestPriority() const {
+    return static_cast<uint32_t>(priorities_.size()) - 1;
+  }
+  bool Contains(uint32_t priority) { return priority < priorities_.size(); }
+
+  // Methods for dealing with fallback state.
+  void MaybeCancelFallbackAtStartupChecks();
+  static void OnFallbackTimer(void* arg, grpc_error* error);
+  static void OnFallbackTimerLocked(void* arg, grpc_error* error);
+  void UpdateFallbackPolicyLocked();
+  OrphanablePtr<LoadBalancingPolicy> CreateFallbackPolicyLocked(
+      const grpc_channel_args* args);
+  void MaybeExitFallbackMode();
+
+  // Server name from target URI.
+  std::string server_name_;
+
+  // Current channel args and config from the resolver.
+  const grpc_channel_args* args_ = nullptr;
+  RefCountedPtr<XdsConfig> config_;
+
+  // Internal state.
+  bool shutting_down_ = false;
+
+  // The xds client and endpoint watcher.
+  // If we get the XdsClient from the channel, we store it in
+  // xds_client_from_channel_; if we create it ourselves, we store it in
+  // xds_client_.
+  RefCountedPtr<XdsClient> xds_client_from_channel_;
+  OrphanablePtr<XdsClient> xds_client_;
+  // A pointer to the endpoint watcher, to be used when cancelling the watch.
+  // Note that this is not owned, so this pointer must never be derefernced.
+  EndpointWatcher* endpoint_watcher_ = nullptr;
+
+  // Whether the checks for fallback at startup are ALL pending. There are
+  // several cases where this can be reset:
+  // 1. The fallback timer fires, we enter fallback mode.
+  // 2. Before the fallback timer fires, the endpoint watcher reports an
+  //    error, we enter fallback mode.
+  // 3. Before the fallback timer fires, if any child policy in the locality map
+  //    becomes READY, we cancel the fallback timer.
+  bool fallback_at_startup_checks_pending_ = false;
+  // Timeout in milliseconds for before using fallback backend addresses.
+  // 0 means not using fallback.
+  const grpc_millis lb_fallback_timeout_ms_;
+  // The backend addresses from the resolver.
+  ServerAddressList fallback_backend_addresses_;
+  // Fallback timer.
+  grpc_timer lb_fallback_timer_;
+  grpc_closure lb_on_fallback_;
+
+  // Non-null iff we are in fallback mode.
+  OrphanablePtr<LoadBalancingPolicy> fallback_policy_;
+
+  const grpc_millis locality_retention_interval_ms_;
+  const grpc_millis locality_map_failover_timeout_ms_;
+  // The list of locality maps, indexed by priority. P0 is the highest
+  // priority.
+  InlinedVector<OrphanablePtr<LocalityMap>, 2> priorities_;
+  // The priority that is being used.
+  uint32_t current_priority_ = UINT32_MAX;
+  // The update for priority_list_.
+  XdsApi::PriorityListUpdate priority_list_update_;
+
+  // The config for dropping calls.
+  RefCountedPtr<XdsApi::DropConfig> drop_config_;
+
+  // Drop stats for client-side load reporting.
+  RefCountedPtr<XdsClusterDropStats> drop_stats_;
+};
+
+//
+// XdsLb::LoadReportingPicker
+//
+
+LoadBalancingPolicy::PickResult XdsLb::LoadReportingPicker::Pick(
+    LoadBalancingPolicy::PickArgs args) {
+  // Forward the pick to the picker returned from the child policy.
+  PickResult result = picker_->Pick(args);
+  if (result.type != PickResult::PICK_COMPLETE ||
+      result.subchannel == nullptr || locality_stats_ == nullptr) {
+    return result;
+  }
+  // Record a call started.
+  locality_stats_->AddCallStarted();
+  // Intercept the recv_trailing_metadata op to record call completion.
+  XdsClusterLocalityStats* locality_stats =
+      locality_stats_->Ref(DEBUG_LOCATION, "LocalityStats+call").release();
+  result.recv_trailing_metadata_ready =
+      // Note: This callback does not run in either the control plane
+      // combiner or in the data plane mutex.
+      [locality_stats](grpc_error* error, MetadataInterface* /*metadata*/,
+                       CallState* /*call_state*/) {
+        const bool call_failed = error != GRPC_ERROR_NONE;
+        locality_stats->AddCallFinished(call_failed);
+        locality_stats->Unref(DEBUG_LOCATION, "LocalityStats+call");
+      };
+  return result;
+}
+
+//
+// XdsLb::LocalityPicker
+//
+
+XdsLb::PickResult XdsLb::LocalityPicker::Pick(PickArgs args) {
+  // Handle drop.
+  const std::string* drop_category;
+  if (drop_config_->ShouldDrop(&drop_category)) {
+    if (drop_stats_ != nullptr) drop_stats_->AddCallDropped(*drop_category);
+    PickResult result;
+    result.type = PickResult::PICK_COMPLETE;
+    return result;
+  }
+  // If we didn't drop, we better have some localities to pick from.
+  if (pickers_.empty()) {  // Should never happen.
+    PickResult result;
+    result.type = PickResult::PICK_FAILED;
+    result.error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                               "xds picker not given any localities"),
+                           GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_INTERNAL);
+    return result;
+  }
+  // Generate a random number in [0, total weight).
+  const uint32_t key = rand() % pickers_[pickers_.size() - 1].first;
+  // Forward pick to whichever locality maps to the range in which the
+  // random number falls in.
+  return PickFromLocality(key, args);
+}
+
+XdsLb::PickResult XdsLb::LocalityPicker::PickFromLocality(const uint32_t key,
+                                                          PickArgs args) {
+  size_t mid = 0;
+  size_t start_index = 0;
+  size_t end_index = pickers_.size() - 1;
+  size_t index = 0;
+  while (end_index > start_index) {
+    mid = (start_index + end_index) / 2;
+    if (pickers_[mid].first > key) {
+      end_index = mid;
+    } else if (pickers_[mid].first < key) {
+      start_index = mid + 1;
+    } else {
+      index = mid + 1;
+      break;
+    }
+  }
+  if (index == 0) index = start_index;
+  GPR_ASSERT(pickers_[index].first > key);
+  return pickers_[index].second->Pick(args);
+}
+
+//
+// XdsLb::FallbackHelper
+//
+
+RefCountedPtr<SubchannelInterface> XdsLb::FallbackHelper::CreateSubchannel(
+    const grpc_channel_args& args) {
+  if (parent_->shutting_down_) return nullptr;
+  return parent_->channel_control_helper()->CreateSubchannel(args);
+}
+
+void XdsLb::FallbackHelper::UpdateState(
+    grpc_connectivity_state state, std::unique_ptr<SubchannelPicker> picker) {
+  if (parent_->shutting_down_) return;
+  parent_->channel_control_helper()->UpdateState(state, std::move(picker));
+}
+
+void XdsLb::FallbackHelper::RequestReresolution() {
+  if (parent_->shutting_down_) return;
+  parent_->channel_control_helper()->RequestReresolution();
+}
+
+void XdsLb::FallbackHelper::AddTraceEvent(TraceSeverity severity,
+                                          StringView message) {
+  if (parent_->shutting_down_) return;
+  parent_->channel_control_helper()->AddTraceEvent(severity, message);
+}
+
+//
+// XdsLb::EndpointWatcher
+//
+
+class XdsLb::EndpointWatcher : public XdsClient::EndpointWatcherInterface {
+ public:
+  explicit EndpointWatcher(RefCountedPtr<XdsLb> xds_policy)
+      : xds_policy_(std::move(xds_policy)) {}
+
+  ~EndpointWatcher() { xds_policy_.reset(DEBUG_LOCATION, "EndpointWatcher"); }
+
+  void OnEndpointChanged(XdsApi::EdsUpdate update) override {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p] Received EDS update from xds client",
+              xds_policy_.get());
+    }
+    // If the balancer tells us to drop all the calls, we should exit fallback
+    // mode immediately.
+    if (update.drop_config->drop_all()) xds_policy_->MaybeExitFallbackMode();
+    // Update the drop config.
+    const bool drop_config_changed =
+        xds_policy_->drop_config_ == nullptr ||
+        *xds_policy_->drop_config_ != *update.drop_config;
+    xds_policy_->drop_config_ = std::move(update.drop_config);
+    // Ignore identical locality update.
+    if (xds_policy_->priority_list_update_ == update.priority_list_update) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+        gpr_log(GPR_INFO,
+                "[xdslb %p] Incoming locality update identical to current, "
+                "ignoring. (drop_config_changed=%d)",
+                xds_policy_.get(), drop_config_changed);
+      }
+      if (drop_config_changed) {
+        xds_policy_->UpdateXdsPickerLocked();
+      }
+      return;
+    }
+    // Update the priority list.
+    xds_policy_->priority_list_update_ = std::move(update.priority_list_update);
+    xds_policy_->UpdatePrioritiesLocked(false /*update_locality_stats*/);
+  }
+
+  void OnError(grpc_error* error) override {
+    // If the fallback-at-startup checks are pending, go into fallback mode
+    // immediately.  This short-circuits the timeout for the
+    // fallback-at-startup case.
+    if (xds_policy_->fallback_at_startup_checks_pending_) {
+      gpr_log(GPR_INFO,
+              "[xdslb %p] xds watcher reported error; entering fallback "
+              "mode: %s",
+              xds_policy_.get(), grpc_error_string(error));
+      xds_policy_->fallback_at_startup_checks_pending_ = false;
+      grpc_timer_cancel(&xds_policy_->lb_fallback_timer_);
+      xds_policy_->UpdateFallbackPolicyLocked();
+      // If the xds call failed, request re-resolution.
+      // TODO(roth): We check the error string contents here to
+      // differentiate between the xds call failing and the xds channel
+      // going into TRANSIENT_FAILURE.  This is a pretty ugly hack,
+      // but it's okay for now, since we're not yet sure whether we will
+      // continue to support the current fallback functionality.  If we
+      // decide to keep the fallback approach, then we should either
+      // find a cleaner way to expose the difference between these two
+      // cases or decide that we're okay re-resolving in both cases.
+      // Note that even if we do keep the current fallback functionality,
+      // this re-resolution will only be necessary if we are going to be
+      // using this LB policy with resolvers other than the xds resolver.
+      if (strstr(grpc_error_string(error), "xds call failed")) {
+        xds_policy_->channel_control_helper()->RequestReresolution();
+      }
+    } else if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p] xds watcher reported error (ignoring): %s",
+              xds_policy_.get(), grpc_error_string(error));
+    }
+    GRPC_ERROR_UNREF(error);
+  }
+
+ private:
+  RefCountedPtr<XdsLb> xds_policy_;
+};
+
+//
+// ctor and dtor
+//
+
+XdsLb::XdsLb(Args args)
+    : LoadBalancingPolicy(std::move(args)),
+      xds_client_from_channel_(XdsClient::GetFromChannelArgs(*args.args)),
+      lb_fallback_timeout_ms_(grpc_channel_args_find_integer(
+          args.args, GRPC_ARG_XDS_FALLBACK_TIMEOUT_MS,
+          {GRPC_XDS_DEFAULT_FALLBACK_TIMEOUT_MS, 0, INT_MAX})),
+      locality_retention_interval_ms_(grpc_channel_args_find_integer(
+          args.args, GRPC_ARG_LOCALITY_RETENTION_INTERVAL_MS,
+          {GRPC_XDS_DEFAULT_LOCALITY_RETENTION_INTERVAL_MS, 0, INT_MAX})),
+      locality_map_failover_timeout_ms_(grpc_channel_args_find_integer(
+          args.args, GRPC_ARG_XDS_FAILOVER_TIMEOUT_MS,
+          {GRPC_XDS_DEFAULT_FAILOVER_TIMEOUT_MS, 0, INT_MAX})) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] created -- xds client from channel: %p", this,
+            xds_client_from_channel_.get());
+  }
+  // Record server name.
+  const grpc_arg* arg = grpc_channel_args_find(args.args, GRPC_ARG_SERVER_URI);
+  const char* server_uri = grpc_channel_arg_get_string(arg);
+  GPR_ASSERT(server_uri != nullptr);
+  grpc_uri* uri = grpc_uri_parse(server_uri, true);
+  GPR_ASSERT(uri->path[0] != '\0');
+  server_name_ = uri->path[0] == '/' ? uri->path + 1 : uri->path;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] server name from channel: %s", this,
+            server_name_.c_str());
+  }
+  grpc_uri_destroy(uri);
+}
+
+XdsLb::~XdsLb() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] destroying xds LB policy", this);
+  }
+  grpc_channel_args_destroy(args_);
+}
+
+void XdsLb::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] shutting down", this);
+  }
+  shutting_down_ = true;
+  MaybeCancelFallbackAtStartupChecks();
+  priorities_.clear();
+  drop_stats_.reset();
+  if (fallback_policy_ != nullptr) {
+    grpc_pollset_set_del_pollset_set(fallback_policy_->interested_parties(),
+                                     interested_parties());
+    fallback_policy_.reset();
+  }
+  // Cancel the endpoint watch here instead of in our dtor if we are using the
+  // XdsResolver, because the watcher holds a ref to us and we might not be
+  // destroying the Xds client leading to a situation where the Xds lb policy is
+  // never destroyed.
+  if (xds_client_from_channel_ != nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p] cancelling watch for %s", this,
+              eds_service_name());
+    }
+    xds_client()->CancelEndpointDataWatch(StringView(eds_service_name()),
+                                          endpoint_watcher_);
+    xds_client_from_channel_.reset();
+  }
+  xds_client_.reset();
+}
+
+//
+// public methods
+//
+
+void XdsLb::ResetBackoffLocked() {
+  // When the XdsClient is instantiated in the resolver instead of in this
+  // LB policy, this is done via the resolver, so we don't need to do it
+  // for xds_client_from_channel_ here.
+  if (xds_client_ != nullptr) xds_client_->ResetBackoff();
+  for (size_t i = 0; i < priorities_.size(); ++i) {
+    priorities_[i]->ResetBackoffLocked();
+  }
+  if (fallback_policy_ != nullptr) {
+    fallback_policy_->ResetBackoffLocked();
+  }
+}
+
+void XdsLb::UpdateLocked(UpdateArgs args) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Received update", this);
+  }
+  const bool is_initial_update = args_ == nullptr;
+  // Update config.
+  auto old_config = std::move(config_);
+  config_ = std::move(args.config);
+  // Update fallback address list.
+  fallback_backend_addresses_ = std::move(args.addresses);
+  // Update args.
+  grpc_channel_args_destroy(args_);
+  args_ = args.args;
+  args.args = nullptr;
+  // Update the existing fallback policy. The fallback policy config and/or the
+  // fallback addresses may be new.
+  if (fallback_policy_ != nullptr) UpdateFallbackPolicyLocked();
+  if (is_initial_update) {
+    // Initialize XdsClient.
+    if (xds_client_from_channel_ == nullptr) {
+      grpc_error* error = GRPC_ERROR_NONE;
+      xds_client_ = MakeOrphanable<XdsClient>(
+          combiner(), interested_parties(), StringView(eds_service_name()),
+          nullptr /* service config watcher */, *args_, &error);
+      // TODO(roth): If we decide that we care about fallback mode, add
+      // proper error handling here.
+      GPR_ASSERT(error == GRPC_ERROR_NONE);
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+        gpr_log(GPR_INFO, "[xdslb %p] Created xds client %p", this,
+                xds_client_.get());
+      }
+    }
+    // Start fallback-at-startup checks.
+    grpc_millis deadline = ExecCtx::Get()->Now() + lb_fallback_timeout_ms_;
+    Ref(DEBUG_LOCATION, "on_fallback_timer").release();  // Held by closure
+    GRPC_CLOSURE_INIT(&lb_on_fallback_, &XdsLb::OnFallbackTimer, this,
+                      grpc_schedule_on_exec_ctx);
+    fallback_at_startup_checks_pending_ = true;
+    grpc_timer_init(&lb_fallback_timer_, deadline, &lb_on_fallback_);
+  }
+  // Update drop stats for load reporting if needed.
+  if (is_initial_update || config_->lrs_load_reporting_server_name() !=
+                               old_config->lrs_load_reporting_server_name()) {
+    drop_stats_.reset();
+    if (config_->lrs_load_reporting_server_name().has_value()) {
+      drop_stats_ = xds_client()->AddClusterDropStats(
+          config_->lrs_load_reporting_server_name().value(),
+          // TODO(roth): We currently hard-code the assumption that
+          // cluster name and EDS service name are the same.  Fix this
+          // as part of refectoring this LB policy.
+          eds_service_name(), eds_service_name());
+    }
+  }
+  // On the initial update, create the endpoint watcher.
+  if (is_initial_update) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p] starting watch for %s", this,
+              eds_service_name());
+    }
+    auto watcher = absl::make_unique<EndpointWatcher>(
+        Ref(DEBUG_LOCATION, "EndpointWatcher"));
+    endpoint_watcher_ = watcher.get();
+    xds_client()->WatchEndpointData(StringView(eds_service_name()),
+                                    std::move(watcher));
+  } else {
+    // Update priority list.
+    // Note that this comes after updating drop_stats_, since we want that
+    // to be used by any new picker we create here.
+    // No need to do this on the initial update, since there won't be any
+    // priorities to update yet.
+    const bool update_locality_stats =
+        config_->lrs_load_reporting_server_name() !=
+        old_config->lrs_load_reporting_server_name();
+    UpdatePrioritiesLocked(update_locality_stats);
+  }
+}
+
+//
+// fallback-related methods
+//
+
+void XdsLb::MaybeCancelFallbackAtStartupChecks() {
+  if (!fallback_at_startup_checks_pending_) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Cancelling fallback timer", this);
+  }
+  grpc_timer_cancel(&lb_fallback_timer_);
+  fallback_at_startup_checks_pending_ = false;
+}
+
+void XdsLb::OnFallbackTimer(void* arg, grpc_error* error) {
+  XdsLb* xdslb_policy = static_cast<XdsLb*>(arg);
+  xdslb_policy->combiner()->Run(
+      GRPC_CLOSURE_INIT(&xdslb_policy->lb_on_fallback_,
+                        &XdsLb::OnFallbackTimerLocked, xdslb_policy, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsLb::OnFallbackTimerLocked(void* arg, grpc_error* error) {
+  XdsLb* xdslb_policy = static_cast<XdsLb*>(arg);
+  // If some fallback-at-startup check is done after the timer fires but before
+  // this callback actually runs, don't fall back.
+  if (xdslb_policy->fallback_at_startup_checks_pending_ &&
+      !xdslb_policy->shutting_down_ && error == GRPC_ERROR_NONE) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Child policy not ready after fallback timeout; "
+            "entering fallback mode",
+            xdslb_policy);
+    xdslb_policy->fallback_at_startup_checks_pending_ = false;
+    xdslb_policy->UpdateFallbackPolicyLocked();
+  }
+  xdslb_policy->Unref(DEBUG_LOCATION, "on_fallback_timer");
+}
+
+void XdsLb::UpdateFallbackPolicyLocked() {
+  if (shutting_down_) return;
+  // Create policy if needed.
+  if (fallback_policy_ == nullptr) {
+    fallback_policy_ = CreateFallbackPolicyLocked(args_);
+    GPR_ASSERT(fallback_policy_ != nullptr);
+  }
+  // Perform update.
+  UpdateArgs update_args;
+  update_args.addresses = fallback_backend_addresses_;
+  update_args.config = config_->fallback_policy();
+  update_args.args = grpc_channel_args_copy(args_);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Updating fallback child policy handler %p",
+            this, fallback_policy_.get());
+  }
+  fallback_policy_->UpdateLocked(std::move(update_args));
+}
+
+OrphanablePtr<LoadBalancingPolicy> XdsLb::CreateFallbackPolicyLocked(
+    const grpc_channel_args* args) {
+  LoadBalancingPolicy::Args lb_policy_args;
+  lb_policy_args.combiner = combiner();
+  lb_policy_args.args = args;
+  lb_policy_args.channel_control_helper =
+      absl::make_unique<FallbackHelper>(Ref(DEBUG_LOCATION, "FallbackHelper"));
+  OrphanablePtr<LoadBalancingPolicy> lb_policy =
+      MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
+                                         &grpc_lb_xds_trace);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Created new fallback child policy handler (%p)", this,
+            lb_policy.get());
+  }
+  // Add the xDS's interested_parties pollset_set to that of the newly created
+  // child policy. This will make the child policy progress upon activity on xDS
+  // LB, which in turn is tied to the application's call.
+  grpc_pollset_set_add_pollset_set(lb_policy->interested_parties(),
+                                   interested_parties());
+  return lb_policy;
+}
+
+void XdsLb::MaybeExitFallbackMode() {
+  if (fallback_policy_ == nullptr) return;
+  gpr_log(GPR_INFO, "[xdslb %p] Exiting fallback mode", this);
+  fallback_policy_.reset();
+}
+
+//
+// priority list-related methods
+//
+
+void XdsLb::UpdatePrioritiesLocked(bool update_locality_stats) {
+  // 1. Remove from the priority list the priorities that are not in the update.
+  DeactivatePrioritiesLowerThan(priority_list_update_.LowestPriority());
+  // 2. Update all the existing priorities.
+  for (uint32_t priority = 0; priority < priorities_.size(); ++priority) {
+    LocalityMap* locality_map = priorities_[priority].get();
+    const auto* locality_map_update = priority_list_update_.Find(priority);
+    // If we have more current priorities than exist in the update, stop here.
+    if (locality_map_update == nullptr) break;
+    // Propagate locality_map_update.
+    // TODO(juanlishen): Find a clean way to skip duplicate update for a
+    // priority.
+    locality_map->UpdateLocked(*locality_map_update, update_locality_stats);
+  }
+  // 3. Only create a new locality map if all the existing ones have failed.
+  if (priorities_.empty() ||
+      !priorities_[priorities_.size() - 1]->failover_timer_callback_pending()) {
+    const uint32_t new_priority = static_cast<uint32_t>(priorities_.size());
+    // Create a new locality map. Note that in some rare cases (e.g., the
+    // locality map reports TRANSIENT_FAILURE synchronously due to subchannel
+    // sharing), the following invocation may result in multiple locality maps
+    // to be created.
+    MaybeCreateLocalityMapLocked(new_priority);
+  }
+  // 4. If we updated locality stats and we already have at least one
+  // priority, update the picker to start using the new stats object(s).
+  if (update_locality_stats && !priorities_.empty()) {
+    UpdateXdsPickerLocked();
+  }
+}
+
+void XdsLb::UpdateXdsPickerLocked() {
+  // If we are in fallback mode, don't generate an xds picker from localities.
+  if (fallback_policy_ != nullptr) return;
+  // If we're dropping all calls, report READY, even though we won't
+  // have a selected priority.
+  if (drop_config_ != nullptr && drop_config_->drop_all()) {
+    channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_READY,
+        absl::make_unique<LocalityPicker>(this, LocalityPicker::PickerList{}));
+    return;
+  }
+  // If we don't have a selected priority, report TRANSIENT_FAILURE.
+  if (current_priority_ == UINT32_MAX) {
+    if (fallback_policy_ == nullptr) {
+      grpc_error* error = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("no ready locality map"),
+          GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+      channel_control_helper()->UpdateState(
+          GRPC_CHANNEL_TRANSIENT_FAILURE,
+          absl::make_unique<TransientFailurePicker>(error));
+    }
+    return;
+  }
+  priorities_[current_priority_]->UpdateXdsPickerLocked();
+}
+
+void XdsLb::MaybeCreateLocalityMapLocked(uint32_t priority) {
+  // Exhausted priorities in the update.
+  if (!priority_list_update_.Contains(priority)) return;
+  auto new_locality_map =
+      new LocalityMap(Ref(DEBUG_LOCATION, "LocalityMap"), priority);
+  priorities_.emplace_back(OrphanablePtr<LocalityMap>(new_locality_map));
+  new_locality_map->UpdateLocked(*priority_list_update_.Find(priority),
+                                 false /*update_locality_stats*/);
+}
+
+void XdsLb::FailoverOnConnectionFailureLocked() {
+  const uint32_t failed_priority = LowestPriority();
+  // If we're failing over from the lowest priority, report TRANSIENT_FAILURE.
+  if (failed_priority == priority_list_update_.LowestPriority()) {
+    UpdateXdsPickerLocked();
+  }
+  MaybeCreateLocalityMapLocked(failed_priority + 1);
+}
+
+void XdsLb::FailoverOnDisconnectionLocked(uint32_t failed_priority) {
+  current_priority_ = UINT32_MAX;
+  for (uint32_t next_priority = failed_priority + 1;
+       next_priority <= priority_list_update_.LowestPriority();
+       ++next_priority) {
+    if (!Contains(next_priority)) {
+      MaybeCreateLocalityMapLocked(next_priority);
+      return;
+    }
+    if (priorities_[next_priority]->MaybeReactivateLocked()) return;
+  }
+}
+
+void XdsLb::SwitchToHigherPriorityLocked(uint32_t priority) {
+  current_priority_ = priority;
+  DeactivatePrioritiesLowerThan(current_priority_);
+  UpdateXdsPickerLocked();
+}
+
+void XdsLb::DeactivatePrioritiesLowerThan(uint32_t priority) {
+  if (priorities_.empty()) return;
+  // Deactivate the locality maps from the lowest priority.
+  for (uint32_t p = LowestPriority(); p > priority; --p) {
+    if (locality_retention_interval_ms_ == 0) {
+      priorities_.pop_back();
+    } else {
+      priorities_[p]->DeactivateLocked();
+    }
+  }
+}
+
+OrphanablePtr<XdsLb::LocalityMap::Locality> XdsLb::ExtractLocalityLocked(
+    const RefCountedPtr<XdsLocalityName>& name, uint32_t exclude_priority) {
+  for (uint32_t priority = 0; priority < priorities_.size(); ++priority) {
+    if (priority == exclude_priority) continue;
+    LocalityMap* locality_map = priorities_[priority].get();
+    auto locality = locality_map->ExtractLocalityLocked(name);
+    if (locality != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+        gpr_log(GPR_INFO,
+                "[xdslb %p] moving locality %p %s to new priority (%" PRIu32
+                " -> %" PRIu32 ")",
+                this, locality.get(), name->AsHumanReadableString(),
+                exclude_priority, priority);
+      }
+      return locality;
+    }
+  }
+  return nullptr;
+}
+
+//
+// XdsLb::LocalityMap
+//
+
+XdsLb::LocalityMap::LocalityMap(RefCountedPtr<XdsLb> xds_policy,
+                                uint32_t priority)
+    : xds_policy_(std::move(xds_policy)), priority_(priority) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Creating priority %" PRIu32,
+            xds_policy_.get(), priority_);
+  }
+  GRPC_CLOSURE_INIT(&on_failover_timer_, OnFailoverTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  // Start the failover timer.
+  Ref(DEBUG_LOCATION, "LocalityMap+OnFailoverTimerLocked").release();
+  grpc_timer_init(
+      &failover_timer_,
+      ExecCtx::Get()->Now() + xds_policy_->locality_map_failover_timeout_ms_,
+      &on_failover_timer_);
+  failover_timer_callback_pending_ = true;
+  // This is the first locality map ever created, report CONNECTING.
+  if (priority_ == 0 && xds_policy_->fallback_policy_ == nullptr) {
+    xds_policy_->channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_CONNECTING,
+        absl::make_unique<QueuePicker>(
+            xds_policy_->Ref(DEBUG_LOCATION, "QueuePicker")));
+  }
+}
+
+void XdsLb::LocalityMap::UpdateLocked(
+    const XdsApi::PriorityListUpdate::LocalityMap& priority_update,
+    bool update_locality_stats) {
+  if (xds_policy_->shutting_down_) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Start Updating priority %" PRIu32,
+            xds_policy(), priority_);
+  }
+  // Maybe reactivate the locality map in case all the active locality maps have
+  // failed.
+  MaybeReactivateLocked();
+  // Remove (later) the localities not in priority_update.
+  for (auto iter = localities_.begin(); iter != localities_.end();) {
+    const auto& name = iter->first;
+    Locality* locality = iter->second.get();
+    if (priority_update.Contains(name)) {
+      ++iter;
+      continue;
+    }
+    if (xds_policy()->locality_retention_interval_ms_ == 0) {
+      iter = localities_.erase(iter);
+    } else {
+      locality->DeactivateLocked();
+      ++iter;
+    }
+  }
+  // Add or update the localities in priority_update.
+  for (const auto& p : priority_update.localities) {
+    const auto& name = p.first;
+    const auto& locality_update = p.second;
+    OrphanablePtr<Locality>& locality = localities_[name];
+    if (locality == nullptr) {
+      // Move from another locality map if possible.
+      locality = xds_policy_->ExtractLocalityLocked(name, priority_);
+      if (locality != nullptr) {
+        locality->set_locality_map(
+            Ref(DEBUG_LOCATION, "LocalityMap+Locality_move"));
+      } else {
+        locality = MakeOrphanable<Locality>(
+            Ref(DEBUG_LOCATION, "LocalityMap+Locality"), name);
+      }
+    }
+    // Keep a copy of serverlist in the update so that we can compare it
+    // with the future ones.
+    locality->UpdateLocked(locality_update.lb_weight,
+                           locality_update.serverlist, update_locality_stats);
+  }
+  // If this is the current priority and we removed all of the READY
+  // localities, go into state CONNECTING.
+  // TODO(roth): Ideally, we should model this as a graceful policy
+  // switch: we should keep using the old localities for a short period
+  // of time, long enough to give the new localities a chance to get
+  // connected.  As part of refactoring this policy, we should try to
+  // fix that.
+  if (priority_ == xds_policy()->current_priority_) {
+    bool found_ready = false;
+    for (auto& p : localities_) {
+      const auto& locality_name = p.first;
+      Locality* locality = p.second.get();
+      if (!locality_map_update()->Contains(locality_name)) continue;
+      if (locality->connectivity_state() == GRPC_CHANNEL_READY) {
+        found_ready = true;
+        break;
+      }
+    }
+    if (!found_ready) {
+      xds_policy_->channel_control_helper()->UpdateState(
+          GRPC_CHANNEL_CONNECTING,
+          absl::make_unique<QueuePicker>(
+              xds_policy_->Ref(DEBUG_LOCATION, "QueuePicker")));
+      xds_policy_->current_priority_ = UINT32_MAX;
+    }
+  }
+}
+
+void XdsLb::LocalityMap::ResetBackoffLocked() {
+  for (auto& p : localities_) p.second->ResetBackoffLocked();
+}
+
+void XdsLb::LocalityMap::UpdateXdsPickerLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] constructing new picker", xds_policy());
+  }
+  // Construct a new xds picker which maintains a map of all locality pickers
+  // that are ready. Each locality is represented by a portion of the range
+  // proportional to its weight, such that the total range is the sum of the
+  // weights of all localities.
+  LocalityPicker::PickerList picker_list;
+  uint32_t end = 0;
+  for (auto& p : localities_) {
+    const auto& locality_name = p.first;
+    Locality* locality = p.second.get();
+    // Skip the localities that are not in the latest locality map update.
+    const auto* locality_update = locality_map_update();
+    if (locality_update == nullptr) continue;
+    if (!locality_update->Contains(locality_name)) continue;
+    if (locality->connectivity_state() != GRPC_CHANNEL_READY) continue;
+    end += locality->weight();
+    picker_list.push_back(
+        std::make_pair(end, locality->GetLoadReportingPicker()));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p]   locality=%s weight=%d picker=%p",
+              xds_policy(), locality_name->AsHumanReadableString(),
+              locality->weight(), picker_list.back().second.get());
+    }
+  }
+  xds_policy()->channel_control_helper()->UpdateState(
+      GRPC_CHANNEL_READY,
+      absl::make_unique<LocalityPicker>(xds_policy(), std::move(picker_list)));
+}
+
+OrphanablePtr<XdsLb::LocalityMap::Locality>
+XdsLb::LocalityMap::ExtractLocalityLocked(
+    const RefCountedPtr<XdsLocalityName>& name) {
+  for (auto iter = localities_.begin(); iter != localities_.end(); ++iter) {
+    const auto& name_in_map = iter->first;
+    if (*name_in_map == *name) {
+      auto locality = std::move(iter->second);
+      localities_.erase(iter);
+      return locality;
+    }
+  }
+  return nullptr;
+}
+
+void XdsLb::LocalityMap::DeactivateLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] deactivating priority %" PRIu32, xds_policy(),
+            priority_);
+  }
+  // If already deactivated, don't do it again.
+  if (delayed_removal_timer_callback_pending_) return;
+  MaybeCancelFailoverTimerLocked();
+  // Start a timer to delete the locality.
+  Ref(DEBUG_LOCATION, "LocalityMap+timer").release();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Will remove priority %" PRIu32 " in %" PRId64 " ms.",
+            xds_policy(), priority_,
+            xds_policy()->locality_retention_interval_ms_);
+  }
+  GRPC_CLOSURE_INIT(&on_delayed_removal_timer_, OnDelayedRemovalTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(
+      &delayed_removal_timer_,
+      ExecCtx::Get()->Now() + xds_policy()->locality_retention_interval_ms_,
+      &on_delayed_removal_timer_);
+  delayed_removal_timer_callback_pending_ = true;
+}
+
+bool XdsLb::LocalityMap::MaybeReactivateLocked() {
+  // Don't reactivate a priority that is not higher than the current one.
+  if (priority_ >= xds_policy_->current_priority_) return false;
+  // Reactivate this priority by cancelling deletion timer.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] reactivating priority %" PRIu32, xds_policy(),
+            priority_);
+  }
+  if (delayed_removal_timer_callback_pending_) {
+    grpc_timer_cancel(&delayed_removal_timer_);
+  }
+  // Switch to this higher priority if it's READY.
+  if (connectivity_state_ != GRPC_CHANNEL_READY) return false;
+  xds_policy_->SwitchToHigherPriorityLocked(priority_);
+  return true;
+}
+
+void XdsLb::LocalityMap::MaybeCancelFailoverTimerLocked() {
+  if (failover_timer_callback_pending_) grpc_timer_cancel(&failover_timer_);
+}
+
+void XdsLb::LocalityMap::Orphan() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Priority %" PRIu32 " orphaned.", xds_policy(),
+            priority_);
+  }
+  MaybeCancelFailoverTimerLocked();
+  if (delayed_removal_timer_callback_pending_) {
+    grpc_timer_cancel(&delayed_removal_timer_);
+  }
+  localities_.clear();
+  Unref(DEBUG_LOCATION, "LocalityMap+Orphan");
+}
+
+void XdsLb::LocalityMap::OnLocalityStateUpdateLocked() {
+  UpdateConnectivityStateLocked();
+  // Ignore priorities not in priority_list_update.
+  if (!priority_list_update().Contains(priority_)) return;
+  const uint32_t current_priority = xds_policy_->current_priority_;
+  // Ignore lower-than-current priorities.
+  if (priority_ > current_priority) return;
+  // Maybe update fallback state.
+  if (connectivity_state_ == GRPC_CHANNEL_READY) {
+    xds_policy_->MaybeCancelFallbackAtStartupChecks();
+    xds_policy_->MaybeExitFallbackMode();
+  }
+  // Update is for a higher-than-current priority. (Special case: update is for
+  // any active priority if there is no current priority.)
+  if (priority_ < current_priority) {
+    if (connectivity_state_ == GRPC_CHANNEL_READY) {
+      MaybeCancelFailoverTimerLocked();
+      // If a higher-than-current priority becomes READY, switch to use it.
+      xds_policy_->SwitchToHigherPriorityLocked(priority_);
+    } else if (connectivity_state_ == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+      // If a higher-than-current priority becomes TRANSIENT_FAILURE, only
+      // handle it if it's the priority that is still in failover timeout.
+      if (failover_timer_callback_pending_) {
+        MaybeCancelFailoverTimerLocked();
+        xds_policy_->FailoverOnConnectionFailureLocked();
+      }
+    }
+    return;
+  }
+  // Update is for current priority.
+  if (connectivity_state_ != GRPC_CHANNEL_READY) {
+    // Fail over if it's no longer READY.
+    xds_policy_->FailoverOnDisconnectionLocked(priority_);
+  }
+  // At this point, one of the following things has happened to the current
+  // priority.
+  // 1. It remained the same (but received picker update from its localities).
+  // 2. It changed to a lower priority due to failover.
+  // 3. It became invalid because failover didn't yield a READY priority.
+  // In any case, update the xds picker.
+  xds_policy_->UpdateXdsPickerLocked();
+}
+
+void XdsLb::LocalityMap::UpdateConnectivityStateLocked() {
+  size_t num_ready = 0;
+  size_t num_connecting = 0;
+  size_t num_idle = 0;
+  size_t num_transient_failures = 0;
+  for (const auto& p : localities_) {
+    const auto& locality_name = p.first;
+    const Locality* locality = p.second.get();
+    // Skip the localities that are not in the latest locality map update.
+    if (!locality_map_update()->Contains(locality_name)) continue;
+    switch (locality->connectivity_state()) {
+      case GRPC_CHANNEL_READY: {
+        ++num_ready;
+        break;
+      }
+      case GRPC_CHANNEL_CONNECTING: {
+        ++num_connecting;
+        break;
+      }
+      case GRPC_CHANNEL_IDLE: {
+        ++num_idle;
+        break;
+      }
+      case GRPC_CHANNEL_TRANSIENT_FAILURE: {
+        ++num_transient_failures;
+        break;
+      }
+      default:
+        GPR_UNREACHABLE_CODE(return );
+    }
+  }
+  if (num_ready > 0) {
+    connectivity_state_ = GRPC_CHANNEL_READY;
+  } else if (num_connecting > 0) {
+    connectivity_state_ = GRPC_CHANNEL_CONNECTING;
+  } else if (num_idle > 0) {
+    connectivity_state_ = GRPC_CHANNEL_IDLE;
+  } else {
+    connectivity_state_ = GRPC_CHANNEL_TRANSIENT_FAILURE;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Priority %" PRIu32 " (%p) connectivity changed to %s",
+            xds_policy(), priority_, this,
+            ConnectivityStateName(connectivity_state_));
+  }
+}
+
+void XdsLb::LocalityMap::OnDelayedRemovalTimer(void* arg, grpc_error* error) {
+  LocalityMap* self = static_cast<LocalityMap*>(arg);
+  self->xds_policy_->combiner()->Run(
+      GRPC_CLOSURE_INIT(&self->on_delayed_removal_timer_,
+                        OnDelayedRemovalTimerLocked, self, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsLb::LocalityMap::OnDelayedRemovalTimerLocked(void* arg,
+                                                     grpc_error* error) {
+  LocalityMap* self = static_cast<LocalityMap*>(arg);
+  self->delayed_removal_timer_callback_pending_ = false;
+  if (error == GRPC_ERROR_NONE && !self->xds_policy_->shutting_down_) {
+    const bool keep = self->priority_list_update().Contains(self->priority_) &&
+                      self->priority_ <= self->xds_policy_->current_priority_;
+    if (!keep) {
+      // This check is to make sure we always delete the locality maps from
+      // the lowest priority even if the closures of the back-to-back timers
+      // are not run in FIFO order.
+      // TODO(juanlishen): Eliminate unnecessary maintenance overhead for some
+      // deactivated locality maps when out-of-order closures are run.
+      // TODO(juanlishen): Check the timer implementation to see if this
+      // defense is necessary.
+      if (self->priority_ == self->xds_policy_->LowestPriority()) {
+        self->xds_policy_->priorities_.pop_back();
+      } else {
+        gpr_log(GPR_ERROR,
+                "[xdslb %p] Priority %" PRIu32
+                " is not the lowest priority (highest numeric value) but is "
+                "attempted to be deleted.",
+                self->xds_policy(), self->priority_);
+      }
+    }
+  }
+  self->Unref(DEBUG_LOCATION, "LocalityMap+timer");
+}
+
+void XdsLb::LocalityMap::OnFailoverTimer(void* arg, grpc_error* error) {
+  LocalityMap* self = static_cast<LocalityMap*>(arg);
+  self->xds_policy_->combiner()->Run(
+      GRPC_CLOSURE_INIT(&self->on_failover_timer_, OnFailoverTimerLocked, self,
+                        nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsLb::LocalityMap::OnFailoverTimerLocked(void* arg, grpc_error* error) {
+  LocalityMap* self = static_cast<LocalityMap*>(arg);
+  self->failover_timer_callback_pending_ = false;
+  if (error == GRPC_ERROR_NONE && !self->xds_policy_->shutting_down_) {
+    self->xds_policy_->FailoverOnConnectionFailureLocked();
+  }
+  self->Unref(DEBUG_LOCATION, "LocalityMap+OnFailoverTimerLocked");
+}
+
+//
+// XdsLb::LocalityMap::Locality
+//
+
+XdsLb::LocalityMap::Locality::Locality(RefCountedPtr<LocalityMap> locality_map,
+                                       RefCountedPtr<XdsLocalityName> name)
+    : locality_map_(std::move(locality_map)), name_(std::move(name)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] created Locality %p for %s", xds_policy(),
+            this, name_->AsHumanReadableString());
+  }
+  // Initialize locality stats if load reporting is enabled.
+  UpdateLocalityStats();
+}
+
+XdsLb::LocalityMap::Locality::~Locality() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Locality %p %s: destroying locality",
+            xds_policy(), this, name_->AsHumanReadableString());
+  }
+  locality_map_.reset(DEBUG_LOCATION, "Locality");
+}
+
+void XdsLb::LocalityMap::Locality::UpdateLocalityStats() {
+  stats_.reset();
+  if (xds_policy()->config_->lrs_load_reporting_server_name().has_value()) {
+    stats_ = xds_policy()->xds_client()->AddClusterLocalityStats(
+        xds_policy()->config_->lrs_load_reporting_server_name().value(),
+        // TODO(roth): We currently hard-code the assumption that
+        // cluster name and EDS service name are the same.  Fix this
+        // as part of refectoring this LB policy.
+        xds_policy()->eds_service_name(), xds_policy()->eds_service_name(),
+        name_);
+  }
+}
+
+grpc_channel_args* XdsLb::LocalityMap::Locality::CreateChildPolicyArgsLocked(
+    const grpc_channel_args* args_in) {
+  const grpc_arg args_to_add[] = {
+      // A channel arg indicating if the target is a backend inferred from a
+      // grpclb load balancer.
+      grpc_channel_arg_integer_create(
+          const_cast<char*>(GRPC_ARG_ADDRESS_IS_BACKEND_FROM_XDS_LOAD_BALANCER),
+          1),
+      // Inhibit client-side health checking, since the balancer does
+      // this for us.
+      grpc_channel_arg_integer_create(
+          const_cast<char*>(GRPC_ARG_INHIBIT_HEALTH_CHECKING), 1),
+  };
+  return grpc_channel_args_copy_and_add(args_in, args_to_add,
+                                        GPR_ARRAY_SIZE(args_to_add));
+}
+
+OrphanablePtr<LoadBalancingPolicy>
+XdsLb::LocalityMap::Locality::CreateChildPolicyLocked(
+    const grpc_channel_args* args) {
+  LoadBalancingPolicy::Args lb_policy_args;
+  lb_policy_args.combiner = xds_policy()->combiner();
+  lb_policy_args.args = args;
+  lb_policy_args.channel_control_helper =
+      absl::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
+  OrphanablePtr<LoadBalancingPolicy> lb_policy =
+      MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
+                                         &grpc_lb_xds_trace);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Locality %p %s: Created new child policy handler (%p)",
+            xds_policy(), this, name_->AsHumanReadableString(),
+            lb_policy.get());
+  }
+  // Add the xDS's interested_parties pollset_set to that of the newly created
+  // child policy. This will make the child policy progress upon activity on
+  // xDS LB, which in turn is tied to the application's call.
+  grpc_pollset_set_add_pollset_set(lb_policy->interested_parties(),
+                                   xds_policy()->interested_parties());
+  return lb_policy;
+}
+
+void XdsLb::LocalityMap::Locality::UpdateLocked(uint32_t locality_weight,
+                                                ServerAddressList serverlist,
+                                                bool update_locality_stats) {
+  if (xds_policy()->shutting_down_) return;
+  // Update locality weight.
+  weight_ = locality_weight;
+  if (delayed_removal_timer_callback_pending_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+      gpr_log(GPR_INFO, "[xdslb %p] Locality %p %s: reactivating", xds_policy(),
+              this, name_->AsHumanReadableString());
+    }
+    grpc_timer_cancel(&delayed_removal_timer_);
+  }
+  // Update locality stats.
+  if (update_locality_stats) UpdateLocalityStats();
+  // Construct update args.
+  UpdateArgs update_args;
+  update_args.addresses = std::move(serverlist);
+  update_args.config = xds_policy()->config_->child_policy();
+  update_args.args = CreateChildPolicyArgsLocked(xds_policy()->args_);
+  // Create child policy if needed.
+  if (child_policy_ == nullptr) {
+    child_policy_ = CreateChildPolicyLocked(update_args.args);
+    GPR_ASSERT(child_policy_ != nullptr);
+  }
+  // Update the policy.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p] Locality %p %s: Updating child policy handler %p",
+            xds_policy(), this, name_->AsHumanReadableString(),
+            child_policy_.get());
+  }
+  child_policy_->UpdateLocked(std::move(update_args));
+}
+
+void XdsLb::LocalityMap::Locality::ShutdownLocked() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Locality %p %s: shutting down locality",
+            xds_policy(), this, name_->AsHumanReadableString());
+  }
+  stats_.reset();
+  // Remove the child policy's interested_parties pollset_set from the
+  // xDS policy.
+  grpc_pollset_set_del_pollset_set(child_policy_->interested_parties(),
+                                   xds_policy()->interested_parties());
+  child_policy_.reset();
+  // Drop our ref to the child's picker, in case it's holding a ref to
+  // the child.
+  load_reporting_picker_.reset();
+  picker_wrapper_.reset();
+  if (delayed_removal_timer_callback_pending_) {
+    grpc_timer_cancel(&delayed_removal_timer_);
+  }
+  shutdown_ = true;
+}
+
+void XdsLb::LocalityMap::Locality::ResetBackoffLocked() {
+  child_policy_->ResetBackoffLocked();
+}
+
+void XdsLb::LocalityMap::Locality::Orphan() {
+  ShutdownLocked();
+  Unref();
+}
+
+void XdsLb::LocalityMap::Locality::DeactivateLocked() {
+  // If already deactivated, don't do that again.
+  if (weight_ == 0) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO, "[xdslb %p] Locality %p %s: deactivating", xds_policy(),
+            this, name_->AsHumanReadableString());
+  }
+  // Set the locality weight to 0 so that future xds picker won't contain this
+  // locality.
+  weight_ = 0;
+  // Start a timer to delete the locality.
+  Ref(DEBUG_LOCATION, "Locality+timer").release();
+  GRPC_CLOSURE_INIT(&on_delayed_removal_timer_, OnDelayedRemovalTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(
+      &delayed_removal_timer_,
+      ExecCtx::Get()->Now() + xds_policy()->locality_retention_interval_ms_,
+      &on_delayed_removal_timer_);
+  delayed_removal_timer_callback_pending_ = true;
+}
+
+void XdsLb::LocalityMap::Locality::OnDelayedRemovalTimer(void* arg,
+                                                         grpc_error* error) {
+  Locality* self = static_cast<Locality*>(arg);
+  self->xds_policy()->combiner()->Run(
+      GRPC_CLOSURE_INIT(&self->on_delayed_removal_timer_,
+                        OnDelayedRemovalTimerLocked, self, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsLb::LocalityMap::Locality::OnDelayedRemovalTimerLocked(
+    void* arg, grpc_error* error) {
+  Locality* self = static_cast<Locality*>(arg);
+  self->delayed_removal_timer_callback_pending_ = false;
+  if (error == GRPC_ERROR_NONE && !self->shutdown_ && self->weight_ == 0) {
+    self->locality_map_->localities_.erase(self->name_);
+  }
+  self->Unref(DEBUG_LOCATION, "Locality+timer");
+}
+
+//
+// XdsLb::LocalityMap::Locality::Helper
+//
+
+RefCountedPtr<SubchannelInterface>
+XdsLb::LocalityMap::Locality::Helper::CreateSubchannel(
+    const grpc_channel_args& args) {
+  if (locality_->xds_policy()->shutting_down_) return nullptr;
+  return locality_->xds_policy()->channel_control_helper()->CreateSubchannel(
+      args);
+}
+
+void XdsLb::LocalityMap::Locality::Helper::UpdateState(
+    grpc_connectivity_state state, std::unique_ptr<SubchannelPicker> picker) {
+  if (locality_->xds_policy()->shutting_down_) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_xds_trace)) {
+    gpr_log(GPR_INFO,
+            "[xdslb %p helper %p] child policy handler %p reports state=%s",
+            locality_->xds_policy(), this, locality_->child_policy_.get(),
+            ConnectivityStateName(state));
+  }
+  // Cache the state and picker in the locality.
+  locality_->connectivity_state_ = state;
+  locality_->picker_wrapper_ =
+      MakeRefCounted<RefCountedEndpointPicker>(std::move(picker));
+  // Notify the locality map.
+  locality_->locality_map_->OnLocalityStateUpdateLocked();
+}
+
+void XdsLb::LocalityMap::Locality::Helper::AddTraceEvent(TraceSeverity severity,
+                                                         StringView message) {
+  if (locality_->xds_policy()->shutting_down_) return;
+  locality_->xds_policy()->channel_control_helper()->AddTraceEvent(severity,
+                                                                   message);
+}
+
+//
+// factory
+//
+
+class XdsFactory : public LoadBalancingPolicyFactory {
+ public:
+  OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args args) const override {
+    return MakeOrphanable<XdsChildHandler>(std::move(args), &grpc_lb_xds_trace);
+  }
+
+  const char* name() const override { return kXds; }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error) const override {
+    GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+    if (json.type() == Json::Type::JSON_NULL) {
+      // xds was mentioned as a policy in the deprecated loadBalancingPolicy
+      // field or in the client API.
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:loadBalancingPolicy error:xds policy requires configuration. "
+          "Please use loadBalancingConfig field of service config instead.");
+      return nullptr;
+    }
+    std::vector<grpc_error*> error_list;
+    // Child policy.
+    Json json_tmp;
+    const Json* child_policy_json;
+    auto it = json.object_value().find("childPolicy");
+    if (it == json.object_value().end()) {
+      json_tmp = Json::Array{Json::Object{
+          {"round_robin", Json::Object()},
+      }};
+      child_policy_json = &json_tmp;
+    } else {
+      child_policy_json = &it->second;
+    }
+    grpc_error* parse_error = GRPC_ERROR_NONE;
+    RefCountedPtr<LoadBalancingPolicy::Config> child_policy =
+        LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(
+            *child_policy_json, &parse_error);
+    if (child_policy == nullptr) {
+      GPR_DEBUG_ASSERT(parse_error != GRPC_ERROR_NONE);
+      std::vector<grpc_error*> child_errors;
+      child_errors.push_back(parse_error);
+      error_list.push_back(
+          GRPC_ERROR_CREATE_FROM_VECTOR("field:childPolicy", &child_errors));
+    }
+    // Fallback policy.
+    const Json* fallback_policy_json;
+    it = json.object_value().find("fallbackPolicy");
+    if (it == json.object_value().end()) {
+      json_tmp = Json::Array{Json::Object{
+          {"round_robin", Json::Object()},
+      }};
+      fallback_policy_json = &json_tmp;
+    } else {
+      fallback_policy_json = &it->second;
+    }
+    RefCountedPtr<LoadBalancingPolicy::Config> fallback_policy =
+        LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(
+            *fallback_policy_json, &parse_error);
+    if (fallback_policy == nullptr) {
+      GPR_DEBUG_ASSERT(parse_error != GRPC_ERROR_NONE);
+      std::vector<grpc_error*> child_errors;
+      child_errors.push_back(parse_error);
+      error_list.push_back(
+          GRPC_ERROR_CREATE_FROM_VECTOR("field:fallbackPolicy", &child_errors));
+    }
+    // EDS service name.
+    const char* eds_service_name = nullptr;
+    it = json.object_value().find("edsServiceName");
+    if (it != json.object_value().end()) {
+      if (it->second.type() != Json::Type::STRING) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:edsServiceName error:type should be string"));
+      } else {
+        eds_service_name = it->second.string_value().c_str();
+      }
+    }
+    // LRS load reporting server name.
+    const char* lrs_load_reporting_server_name = nullptr;
+    it = json.object_value().find("lrsLoadReportingServerName");
+    if (it != json.object_value().end()) {
+      if (it->second.type() != Json::Type::STRING) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:lrsLoadReportingServerName error:type should be string"));
+      } else {
+        lrs_load_reporting_server_name = it->second.string_value().c_str();
+      }
+    }
+    if (error_list.empty()) {
+      absl::optional<std::string> optional_lrs_load_reporting_server_name;
+      if (lrs_load_reporting_server_name != nullptr) {
+        optional_lrs_load_reporting_server_name.emplace(
+            std::string(lrs_load_reporting_server_name));
+      }
+      return MakeRefCounted<XdsConfig>(
+          std::move(child_policy), std::move(fallback_policy),
+          eds_service_name == nullptr ? "" : eds_service_name,
+          std::move(optional_lrs_load_reporting_server_name));
+    } else {
+      *error = GRPC_ERROR_CREATE_FROM_VECTOR("Xds Parser", &error_list);
+      return nullptr;
+    }
+  }
+
+ private:
+  class XdsChildHandler : public ChildPolicyHandler {
+   public:
+    XdsChildHandler(Args args, TraceFlag* tracer)
+        : ChildPolicyHandler(std::move(args), tracer) {}
+
+    bool ConfigChangeRequiresNewPolicyInstance(
+        LoadBalancingPolicy::Config* old_config,
+        LoadBalancingPolicy::Config* new_config) const override {
+      GPR_ASSERT(old_config->name() == kXds);
+      GPR_ASSERT(new_config->name() == kXds);
+      XdsConfig* old_xds_config = static_cast<XdsConfig*>(old_config);
+      XdsConfig* new_xds_config = static_cast<XdsConfig*>(new_config);
+      const char* old_eds_service_name =
+          old_xds_config->eds_service_name() == nullptr
+              ? ""
+              : old_xds_config->eds_service_name();
+      const char* new_eds_service_name =
+          new_xds_config->eds_service_name() == nullptr
+              ? ""
+              : new_xds_config->eds_service_name();
+      return strcmp(old_eds_service_name, new_eds_service_name) != 0;
+    }
+
+    OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+        const char* name, LoadBalancingPolicy::Args args) const override {
+      return MakeOrphanable<XdsLb>(std::move(args));
+    }
+  };
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+//
+// Plugin registration
+//
+
+void grpc_lb_policy_xds_init() {
+  grpc_core::LoadBalancingPolicyRegistry::Builder::
+      RegisterLoadBalancingPolicyFactory(
+          absl::make_unique<grpc_core::XdsFactory>());
+}
+
+void grpc_lb_policy_xds_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.h
new file mode 100644
index 0000000..13d3435
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy/xds/xds.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H
+
+#include <grpc/support/port_platform.h>
+
+/** Channel arg indicating if a target corresponding to the address is a backend
+ * received from a balancer. The type of this arg is an integer and the value is
+ * treated as a bool. */
+// TODO(roth): Depending on how we ultimately decide to handle fallback,
+// this may no longer be needed.
+#define GRPC_ARG_ADDRESS_IS_BACKEND_FROM_XDS_LOAD_BALANCER \
+  "grpc.address_is_backend_from_xds_load_balancer"
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_XDS_XDS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_factory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_factory.h
new file mode 100644
index 0000000..9e4425f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_factory.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+class LoadBalancingPolicyFactory {
+ public:
+  virtual ~LoadBalancingPolicyFactory() {}
+
+  /// Returns a new LB policy instance.
+  virtual OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      LoadBalancingPolicy::Args) const = 0;
+
+  /// Returns the LB policy name that this factory provides.
+  /// Caller does NOT take ownership of result.
+  virtual const char* name() const = 0;
+
+  virtual RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error) const = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.cc
new file mode 100644
index 0000000..79e5f2f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.cc	
@@ -0,0 +1,178 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+
+#include <string.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+
+namespace grpc_core {
+
+namespace {
+
+class RegistryState {
+ public:
+  RegistryState() {}
+
+  void RegisterLoadBalancingPolicyFactory(
+      std::unique_ptr<LoadBalancingPolicyFactory> factory) {
+    for (size_t i = 0; i < factories_.size(); ++i) {
+      GPR_ASSERT(strcmp(factories_[i]->name(), factory->name()) != 0);
+    }
+    factories_.push_back(std::move(factory));
+  }
+
+  LoadBalancingPolicyFactory* GetLoadBalancingPolicyFactory(
+      const char* name) const {
+    for (size_t i = 0; i < factories_.size(); ++i) {
+      if (strcmp(name, factories_[i]->name()) == 0) {
+        return factories_[i].get();
+      }
+    }
+    return nullptr;
+  }
+
+ private:
+  InlinedVector<std::unique_ptr<LoadBalancingPolicyFactory>, 10> factories_;
+};
+
+RegistryState* g_state = nullptr;
+
+}  // namespace
+
+//
+// LoadBalancingPolicyRegistry::Builder
+//
+
+void LoadBalancingPolicyRegistry::Builder::InitRegistry() {
+  if (g_state == nullptr) g_state = new RegistryState();
+}
+
+void LoadBalancingPolicyRegistry::Builder::ShutdownRegistry() {
+  delete g_state;
+  g_state = nullptr;
+}
+
+void LoadBalancingPolicyRegistry::Builder::RegisterLoadBalancingPolicyFactory(
+    std::unique_ptr<LoadBalancingPolicyFactory> factory) {
+  InitRegistry();
+  g_state->RegisterLoadBalancingPolicyFactory(std::move(factory));
+}
+
+//
+// LoadBalancingPolicyRegistry
+//
+
+OrphanablePtr<LoadBalancingPolicy>
+LoadBalancingPolicyRegistry::CreateLoadBalancingPolicy(
+    const char* name, LoadBalancingPolicy::Args args) {
+  GPR_ASSERT(g_state != nullptr);
+  // Find factory.
+  LoadBalancingPolicyFactory* factory =
+      g_state->GetLoadBalancingPolicyFactory(name);
+  if (factory == nullptr) return nullptr;  // Specified name not found.
+  // Create policy via factory.
+  return factory->CreateLoadBalancingPolicy(std::move(args));
+}
+
+bool LoadBalancingPolicyRegistry::LoadBalancingPolicyExists(
+    const char* name, bool* requires_config) {
+  GPR_ASSERT(g_state != nullptr);
+  auto* factory = g_state->GetLoadBalancingPolicyFactory(name);
+  if (factory == nullptr) {
+    return false;
+  }
+  if (requires_config != nullptr) {
+    grpc_error* error = GRPC_ERROR_NONE;
+    // Check if the load balancing policy allows an empty config
+    *requires_config =
+        factory->ParseLoadBalancingConfig(Json(), &error) == nullptr;
+    GRPC_ERROR_UNREF(error);
+  }
+  return true;
+}
+
+namespace {
+
+// Returns the JSON node of policy (with both policy name and config content)
+// given the JSON node of a LoadBalancingConfig array.
+grpc_error* ParseLoadBalancingConfigHelper(
+    const Json& lb_config_array, Json::Object::const_iterator* result) {
+  if (lb_config_array.type() != Json::Type::ARRAY) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("type should be array");
+  }
+  // Find the first LB policy that this client supports.
+  for (const Json& lb_config : lb_config_array.array_value()) {
+    if (lb_config.type() != Json::Type::OBJECT) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "child entry should be of type object");
+    }
+    if (lb_config.object_value().empty()) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "no policy found in child entry");
+    }
+    if (lb_config.object_value().size() > 1) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("oneOf violation");
+    }
+    auto it = lb_config.object_value().begin();
+    if (it->second.type() != Json::Type::OBJECT) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "child entry should be of type object");
+    }
+    // If we support this policy, then select it.
+    if (LoadBalancingPolicyRegistry::LoadBalancingPolicyExists(
+            it->first.c_str(), nullptr)) {
+      *result = it;
+      return GRPC_ERROR_NONE;
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_STATIC_STRING("No known policy");
+}
+
+}  // namespace
+
+RefCountedPtr<LoadBalancingPolicy::Config>
+LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(const Json& json,
+                                                      grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  GPR_ASSERT(g_state != nullptr);
+  Json::Object::const_iterator policy;
+  *error = ParseLoadBalancingConfigHelper(json, &policy);
+  if (*error != GRPC_ERROR_NONE) {
+    return nullptr;
+  }
+  // Find factory.
+  LoadBalancingPolicyFactory* factory =
+      g_state->GetLoadBalancingPolicyFactory(policy->first.c_str());
+  if (factory == nullptr) {
+    char* msg;
+    gpr_asprintf(&msg, "Factory not found for policy \"%s\"",
+                 policy->first.c_str());
+    *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return nullptr;
+  }
+  // Parse load balancing config via factory.
+  return factory->ParseLoadBalancingConfig(policy->second, error);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.h
new file mode 100644
index 0000000..8d2e3e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/lb_policy_registry.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+
+namespace grpc_core {
+
+class LoadBalancingPolicyRegistry {
+ public:
+  /// Methods used to create and populate the LoadBalancingPolicyRegistry.
+  /// NOT THREAD SAFE -- to be used only during global gRPC
+  /// initialization and shutdown.
+  class Builder {
+   public:
+    /// Global initialization and shutdown hooks.
+    static void InitRegistry();
+    static void ShutdownRegistry();
+
+    /// Registers an LB policy factory.  The factory will be used to create an
+    /// LB policy whose name matches that of the factory.
+    static void RegisterLoadBalancingPolicyFactory(
+        std::unique_ptr<LoadBalancingPolicyFactory> factory);
+  };
+
+  /// Creates an LB policy of the type specified by \a name.
+  static OrphanablePtr<LoadBalancingPolicy> CreateLoadBalancingPolicy(
+      const char* name, LoadBalancingPolicy::Args args);
+
+  /// Returns true if the LB policy factory specified by \a name exists in this
+  /// registry. If the load balancing policy requires a config to be specified
+  /// then sets \a requires_config to true.
+  static bool LoadBalancingPolicyExists(const char* name,
+                                        bool* requires_config);
+
+  /// Returns a parsed object of the load balancing policy to be used from a
+  /// LoadBalancingConfig array \a json.
+  static RefCountedPtr<LoadBalancingPolicy::Config> ParseLoadBalancingConfig(
+      const Json& json, grpc_error** error);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.cc
new file mode 100644
index 0000000..e575999
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.cc	
@@ -0,0 +1,96 @@
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/local_subchannel_pool.h"
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+namespace grpc_core {
+
+LocalSubchannelPool::LocalSubchannelPool() {
+  subchannel_map_ = grpc_avl_create(&subchannel_avl_vtable_);
+}
+
+LocalSubchannelPool::~LocalSubchannelPool() {
+  grpc_avl_unref(subchannel_map_, nullptr);
+}
+
+Subchannel* LocalSubchannelPool::RegisterSubchannel(SubchannelKey* key,
+                                                    Subchannel* constructed) {
+  // Check to see if a subchannel already exists.
+  Subchannel* c =
+      static_cast<Subchannel*>(grpc_avl_get(subchannel_map_, key, nullptr));
+  if (c != nullptr) {
+    // The subchannel already exists. Reuse it.
+    c = GRPC_SUBCHANNEL_REF(c, "subchannel_register+reuse");
+    GRPC_SUBCHANNEL_UNREF(constructed, "subchannel_register+found_existing");
+  } else {
+    // There hasn't been such subchannel. Add one.
+    subchannel_map_ = grpc_avl_add(subchannel_map_, new SubchannelKey(*key),
+                                   constructed, nullptr);
+    c = constructed;
+  }
+  return c;
+}
+
+void LocalSubchannelPool::UnregisterSubchannel(SubchannelKey* key) {
+  subchannel_map_ = grpc_avl_remove(subchannel_map_, key, nullptr);
+}
+
+Subchannel* LocalSubchannelPool::FindSubchannel(SubchannelKey* key) {
+  Subchannel* c =
+      static_cast<Subchannel*>(grpc_avl_get(subchannel_map_, key, nullptr));
+  return c == nullptr ? c : GRPC_SUBCHANNEL_REF(c, "found_from_pool");
+}
+
+namespace {
+
+void sck_avl_destroy(void* p, void* /*user_data*/) {
+  SubchannelKey* key = static_cast<SubchannelKey*>(p);
+  delete key;
+}
+
+void* sck_avl_copy(void* p, void* /*unused*/) {
+  const SubchannelKey* key = static_cast<const SubchannelKey*>(p);
+  auto new_key = new SubchannelKey(*key);
+  return static_cast<void*>(new_key);
+}
+
+long sck_avl_compare(void* a, void* b, void* /*unused*/) {
+  const SubchannelKey* key_a = static_cast<const SubchannelKey*>(a);
+  const SubchannelKey* key_b = static_cast<const SubchannelKey*>(b);
+  return key_a->Cmp(*key_b);
+}
+
+void scv_avl_destroy(void* /*p*/, void* /*user_data*/) {}
+
+void* scv_avl_copy(void* p, void* /*unused*/) { return p; }
+
+}  // namespace
+
+const grpc_avl_vtable LocalSubchannelPool::subchannel_avl_vtable_ = {
+    sck_avl_destroy,  // destroy_key
+    sck_avl_copy,     // copy_key
+    sck_avl_compare,  // compare_keys
+    scv_avl_destroy,  // destroy_value
+    scv_avl_copy      // copy_value
+};
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.h
new file mode 100644
index 0000000..a6b7e25
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/local_subchannel_pool.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+
+namespace grpc_core {
+
+// The local subchannel pool that is owned by a single channel. It doesn't
+// support subchannel sharing with other channels by nature. Nor does it support
+// subchannel retention when a subchannel is not used. The only real purpose of
+// using this subchannel pool is to allow subchannel reuse within the channel
+// when an incoming resolver update contains some addresses for which the
+// channel has already created subchannels.
+// Thread-unsafe.
+class LocalSubchannelPool final : public SubchannelPoolInterface {
+ public:
+  LocalSubchannelPool();
+  ~LocalSubchannelPool() override;
+
+  // Implements interface methods.
+  // Thread-unsafe. Intended to be invoked within the client_channel combiner.
+  Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                 Subchannel* constructed) override;
+  void UnregisterSubchannel(SubchannelKey* key) override;
+  Subchannel* FindSubchannel(SubchannelKey* key) override;
+
+ private:
+  // The vtable for subchannel operations in an AVL tree.
+  static const grpc_avl_vtable subchannel_avl_vtable_;
+  // A map from subchannel key to subchannel.
+  grpc_avl subchannel_map_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LOCAL_SUBCHANNEL_POOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.cc
new file mode 100644
index 0000000..fbfbb44
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.cc	
@@ -0,0 +1,237 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/lib/iomgr/grpc_if_nametoindex.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <stdio.h>
+#include <string.h>
+#ifdef GRPC_HAVE_UNIX_SOCKET
+#include <sys/un.h>
+#endif
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+
+#ifdef GRPC_POSIX_SOCKET
+#include <errno.h>
+#include <net/if.h>
+#endif
+
+#ifdef GRPC_HAVE_UNIX_SOCKET
+
+bool grpc_parse_unix(const grpc_uri* uri,
+                     grpc_resolved_address* resolved_addr) {
+  if (strcmp("unix", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'unix' scheme, got '%s'", uri->scheme);
+    return false;
+  }
+  struct sockaddr_un* un =
+      reinterpret_cast<struct sockaddr_un*>(resolved_addr->addr);
+  const size_t maxlen = sizeof(un->sun_path);
+  const size_t path_len = strnlen(uri->path, maxlen);
+  if (path_len == maxlen) return false;
+  un->sun_family = AF_UNIX;
+  strcpy(un->sun_path, uri->path);
+  resolved_addr->len = static_cast<socklen_t>(sizeof(*un));
+  return true;
+}
+
+#else /* GRPC_HAVE_UNIX_SOCKET */
+
+bool grpc_parse_unix(const grpc_uri* uri,
+                     grpc_resolved_address* resolved_addr) {
+  abort();
+}
+
+#endif /* GRPC_HAVE_UNIX_SOCKET */
+
+bool grpc_parse_ipv4_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors) {
+  bool success = false;
+  // Split host and port.
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  if (!grpc_core::SplitHostPort(hostport, &host, &port)) {
+    if (log_errors) {
+      gpr_log(GPR_ERROR, "Failed gpr_split_host_port(%s, ...)", hostport);
+    }
+    return false;
+  }
+  // Parse IP address.
+  memset(addr, 0, sizeof(*addr));
+  addr->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
+  grpc_sockaddr_in* in = reinterpret_cast<grpc_sockaddr_in*>(addr->addr);
+  in->sin_family = GRPC_AF_INET;
+  if (grpc_inet_pton(GRPC_AF_INET, host.get(), &in->sin_addr) == 0) {
+    if (log_errors) {
+      gpr_log(GPR_ERROR, "invalid ipv4 address: '%s'", host.get());
+    }
+    goto done;
+  }
+  // Parse port.
+  if (port == nullptr) {
+    if (log_errors) gpr_log(GPR_ERROR, "no port given for ipv4 scheme");
+    goto done;
+  }
+  int port_num;
+  if (sscanf(port.get(), "%d", &port_num) != 1 || port_num < 0 ||
+      port_num > 65535) {
+    if (log_errors) gpr_log(GPR_ERROR, "invalid ipv4 port: '%s'", port.get());
+    goto done;
+  }
+  in->sin_port = grpc_htons(static_cast<uint16_t>(port_num));
+  success = true;
+done:
+  return success;
+}
+
+bool grpc_parse_ipv4(const grpc_uri* uri,
+                     grpc_resolved_address* resolved_addr) {
+  if (strcmp("ipv4", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'ipv4' scheme, got '%s'", uri->scheme);
+    return false;
+  }
+  const char* host_port = uri->path;
+  if (*host_port == '/') ++host_port;
+  return grpc_parse_ipv4_hostport(host_port, resolved_addr,
+                                  true /* log_errors */);
+}
+
+bool grpc_parse_ipv6_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors) {
+  bool success = false;
+  // Split host and port.
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  if (!grpc_core::SplitHostPort(hostport, &host, &port)) {
+    if (log_errors) {
+      gpr_log(GPR_ERROR, "Failed gpr_split_host_port(%s, ...)", hostport);
+    }
+    return false;
+  }
+  // Parse IP address.
+  memset(addr, 0, sizeof(*addr));
+  addr->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in6));
+  grpc_sockaddr_in6* in6 = reinterpret_cast<grpc_sockaddr_in6*>(addr->addr);
+  in6->sin6_family = GRPC_AF_INET6;
+  // Handle the RFC6874 syntax for IPv6 zone identifiers.
+  char* host_end =
+      static_cast<char*>(gpr_memrchr(host.get(), '%', strlen(host.get())));
+  if (host_end != nullptr) {
+    GPR_ASSERT(host_end >= host.get());
+    char host_without_scope[GRPC_INET6_ADDRSTRLEN + 1];
+    size_t host_without_scope_len = static_cast<size_t>(host_end - host.get());
+    uint32_t sin6_scope_id = 0;
+    if (host_without_scope_len > GRPC_INET6_ADDRSTRLEN) {
+      if (log_errors) {
+        gpr_log(
+            GPR_ERROR,
+            "invalid ipv6 address length %zu. Length cannot be greater than "
+            "GRPC_INET6_ADDRSTRLEN i.e %d)",
+            host_without_scope_len, GRPC_INET6_ADDRSTRLEN);
+      }
+      goto done;
+    }
+    strncpy(host_without_scope, host.get(), host_without_scope_len);
+    host_without_scope[host_without_scope_len] = '\0';
+    if (grpc_inet_pton(GRPC_AF_INET6, host_without_scope, &in6->sin6_addr) ==
+        0) {
+      if (log_errors) {
+        gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host_without_scope);
+      }
+      goto done;
+    }
+    if (gpr_parse_bytes_to_uint32(
+            host_end + 1, strlen(host.get()) - host_without_scope_len - 1,
+            &sin6_scope_id) == 0) {
+      if ((sin6_scope_id = grpc_if_nametoindex(host_end + 1)) == 0) {
+        gpr_log(GPR_ERROR,
+                "Invalid interface name: '%s'. "
+                "Non-numeric and failed if_nametoindex.",
+                host_end + 1);
+        goto done;
+      }
+    }
+    // Handle "sin6_scope_id" being type "u_long". See grpc issue #10027.
+    in6->sin6_scope_id = sin6_scope_id;
+  } else {
+    if (grpc_inet_pton(GRPC_AF_INET6, host.get(), &in6->sin6_addr) == 0) {
+      if (log_errors) {
+        gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host.get());
+      }
+      goto done;
+    }
+  }
+  // Parse port.
+  if (port == nullptr) {
+    if (log_errors) gpr_log(GPR_ERROR, "no port given for ipv6 scheme");
+    goto done;
+  }
+  int port_num;
+  if (sscanf(port.get(), "%d", &port_num) != 1 || port_num < 0 ||
+      port_num > 65535) {
+    if (log_errors) gpr_log(GPR_ERROR, "invalid ipv6 port: '%s'", port.get());
+    goto done;
+  }
+  in6->sin6_port = grpc_htons(static_cast<uint16_t>(port_num));
+  success = true;
+done:
+  return success;
+}
+
+bool grpc_parse_ipv6(const grpc_uri* uri,
+                     grpc_resolved_address* resolved_addr) {
+  if (strcmp("ipv6", uri->scheme) != 0) {
+    gpr_log(GPR_ERROR, "Expected 'ipv6' scheme, got '%s'", uri->scheme);
+    return false;
+  }
+  const char* host_port = uri->path;
+  if (*host_port == '/') ++host_port;
+  return grpc_parse_ipv6_hostport(host_port, resolved_addr,
+                                  true /* log_errors */);
+}
+
+bool grpc_parse_uri(const grpc_uri* uri, grpc_resolved_address* resolved_addr) {
+  if (strcmp("unix", uri->scheme) == 0) {
+    return grpc_parse_unix(uri, resolved_addr);
+  } else if (strcmp("ipv4", uri->scheme) == 0) {
+    return grpc_parse_ipv4(uri, resolved_addr);
+  } else if (strcmp("ipv6", uri->scheme) == 0) {
+    return grpc_parse_ipv6(uri, resolved_addr);
+  }
+  gpr_log(GPR_ERROR, "Can't parse scheme '%s'", uri->scheme);
+  return false;
+}
+
+uint16_t grpc_strhtons(const char* port) {
+  if (strcmp(port, "http") == 0) {
+    return htons(80);
+  } else if (strcmp(port, "https") == 0) {
+    return htons(443);
+  }
+  return htons(static_cast<unsigned short>(atoi(port)));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.h
new file mode 100644
index 0000000..5c050a2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/parse_address.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain a
+ * unix socket path. Returns true upon success. */
+bool grpc_parse_unix(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv4 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv4(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri, whose path is expected to contain an
+ * IPv6 host:port pair. Returns true upon success. */
+bool grpc_parse_ipv6(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Populate \a resolved_addr from \a uri. Returns true upon success. */
+bool grpc_parse_uri(const grpc_uri* uri, grpc_resolved_address* resolved_addr);
+
+/** Parse bare IPv4 or IPv6 "IP:port" strings. */
+bool grpc_parse_ipv4_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors);
+bool grpc_parse_ipv6_hostport(const char* hostport, grpc_resolved_address* addr,
+                              bool log_errors);
+
+/* Converts named or numeric port to a uint16 suitable for use in a sockaddr. */
+uint16_t grpc_strhtons(const char* port);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PARSE_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper.h
new file mode 100644
index 0000000..3e297d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+namespace grpc_core {
+
+class ProxyMapperInterface {
+ public:
+  virtual ~ProxyMapperInterface() = default;
+
+  /// Determines the proxy name to resolve for \a server_uri.
+  /// If no proxy is needed, returns false.
+  /// Otherwise, sets \a name_to_resolve, optionally sets \a new_args,
+  /// and returns true.
+  virtual bool MapName(const char* server_uri, const grpc_channel_args* args,
+                       char** name_to_resolve,
+                       grpc_channel_args** new_args) = 0;
+
+  /// Determines the proxy address to use to contact \a address.
+  /// If no proxy is needed, returns false.
+  /// Otherwise, sets \a new_address, optionally sets \a new_args, and
+  /// returns true.
+  virtual bool MapAddress(const grpc_resolved_address& address,
+                          const grpc_channel_args* args,
+                          grpc_resolved_address** new_address,
+                          grpc_channel_args** new_args) = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.cc
new file mode 100644
index 0000000..2fc2572
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.cc	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+
+#include <memory>
+#include <vector>
+
+namespace grpc_core {
+
+namespace {
+
+using ProxyMapperList = std::vector<std::unique_ptr<ProxyMapperInterface>>;
+ProxyMapperList* g_proxy_mapper_list;
+
+}  // namespace
+
+void ProxyMapperRegistry::Init() {
+  if (g_proxy_mapper_list == nullptr) {
+    g_proxy_mapper_list = new ProxyMapperList();
+  }
+}
+
+void ProxyMapperRegistry::Shutdown() {
+  delete g_proxy_mapper_list;
+  // Clean up in case we re-initialze later.
+  // TODO(roth): This should ideally live in Init().  However, if we did this
+  // there, then we would do it AFTER we start registering proxy mappers from
+  // third-party plugins, so they'd never show up (and would leak memory).
+  // We probably need some sort of dependency system for plugins to fix
+  // this.
+  g_proxy_mapper_list = nullptr;
+}
+
+void ProxyMapperRegistry::Register(
+    bool at_start, std::unique_ptr<ProxyMapperInterface> mapper) {
+  Init();
+  if (at_start) {
+    g_proxy_mapper_list->insert(g_proxy_mapper_list->begin(),
+                                std::move(mapper));
+  } else {
+    g_proxy_mapper_list->emplace_back(std::move(mapper));
+  }
+}
+
+bool ProxyMapperRegistry::MapName(const char* server_uri,
+                                  const grpc_channel_args* args,
+                                  char** name_to_resolve,
+                                  grpc_channel_args** new_args) {
+  Init();
+  for (const auto& mapper : *g_proxy_mapper_list) {
+    if (mapper->MapName(server_uri, args, name_to_resolve, new_args)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool ProxyMapperRegistry::MapAddress(const grpc_resolved_address& address,
+                                     const grpc_channel_args* args,
+                                     grpc_resolved_address** new_address,
+                                     grpc_channel_args** new_args) {
+  Init();
+  for (const auto& mapper : *g_proxy_mapper_list) {
+    if (mapper->MapAddress(address, args, new_address, new_args)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.h
new file mode 100644
index 0000000..b6273e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/proxy_mapper_registry.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/proxy_mapper.h"
+
+namespace grpc_core {
+
+class ProxyMapperRegistry {
+ public:
+  static void Init();
+  static void Shutdown();
+
+  /// Registers a new proxy mapper.
+  /// If \a at_start is true, the new mapper will be at the beginning of
+  /// the list.  Otherwise, it will be added to the end.
+  static void Register(bool at_start,
+                       std::unique_ptr<ProxyMapperInterface> mapper);
+
+  static bool MapName(const char* server_uri, const grpc_channel_args* args,
+                      char** name_to_resolve, grpc_channel_args** new_args);
+
+  static bool MapAddress(const grpc_resolved_address& address,
+                         const grpc_channel_args* args,
+                         grpc_resolved_address** new_address,
+                         grpc_channel_args** new_args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.cc
new file mode 100644
index 0000000..ff3e47f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.cc	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_resolver_refcount(false,
+                                                           "resolver_refcount");
+
+namespace grpc_core {
+
+//
+// Resolver
+//
+
+Resolver::Resolver(Combiner* combiner,
+                   std::unique_ptr<ResultHandler> result_handler)
+    : InternallyRefCounted(&grpc_trace_resolver_refcount),
+      result_handler_(std::move(result_handler)),
+      combiner_(GRPC_COMBINER_REF(combiner, "resolver")) {}
+
+Resolver::~Resolver() { GRPC_COMBINER_UNREF(combiner_, "resolver"); }
+
+//
+// Resolver::Result
+//
+
+Resolver::Result::~Result() {
+  GRPC_ERROR_UNREF(service_config_error);
+  grpc_channel_args_destroy(args);
+}
+
+Resolver::Result::Result(const Result& other) {
+  addresses = other.addresses;
+  service_config = other.service_config;
+  service_config_error = GRPC_ERROR_REF(other.service_config_error);
+  args = grpc_channel_args_copy(other.args);
+}
+
+Resolver::Result::Result(Result&& other) {
+  addresses = std::move(other.addresses);
+  service_config = std::move(other.service_config);
+  service_config_error = other.service_config_error;
+  other.service_config_error = GRPC_ERROR_NONE;
+  args = other.args;
+  other.args = nullptr;
+}
+
+Resolver::Result& Resolver::Result::operator=(const Result& other) {
+  addresses = other.addresses;
+  service_config = other.service_config;
+  GRPC_ERROR_UNREF(service_config_error);
+  service_config_error = GRPC_ERROR_REF(other.service_config_error);
+  grpc_channel_args_destroy(args);
+  args = grpc_channel_args_copy(other.args);
+  return *this;
+}
+
+Resolver::Result& Resolver::Result::operator=(Result&& other) {
+  addresses = std::move(other.addresses);
+  service_config = std::move(other.service_config);
+  GRPC_ERROR_UNREF(service_config_error);
+  service_config_error = other.service_config_error;
+  other.service_config_error = GRPC_ERROR_NONE;
+  grpc_channel_args_destroy(args);
+  args = other.args;
+  other.args = nullptr;
+  return *this;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.h
new file mode 100644
index 0000000..56bf273
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver.h	
@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iomgr.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_resolver_refcount;
+
+namespace grpc_core {
+
+/// Interface for name resolution.
+///
+/// This interface is designed to support both push-based and pull-based
+/// mechanisms.  A push-based mechanism is one where the resolver will
+/// subscribe to updates for a given name, and the name service will
+/// proactively send new data to the resolver whenever the data associated
+/// with the name changes.  A pull-based mechanism is one where the resolver
+/// needs to query the name service again to get updated information (e.g.,
+/// DNS).
+///
+/// Note: All methods with a "Locked" suffix must be called from the
+/// combiner passed to the constructor.
+class Resolver : public InternallyRefCounted<Resolver> {
+ public:
+  /// Results returned by the resolver.
+  struct Result {
+    ServerAddressList addresses;
+    RefCountedPtr<ServiceConfig> service_config;
+    grpc_error* service_config_error = GRPC_ERROR_NONE;
+    const grpc_channel_args* args = nullptr;
+
+    // TODO(roth): Remove everything below once grpc_error and
+    // grpc_channel_args are convert to copyable and movable C++ objects.
+    Result() = default;
+    ~Result();
+    Result(const Result& other);
+    Result(Result&& other);
+    Result& operator=(const Result& other);
+    Result& operator=(Result&& other);
+  };
+
+  /// A proxy object used by the resolver to return results to the
+  /// client channel.
+  class ResultHandler {
+   public:
+    virtual ~ResultHandler() {}
+
+    /// Returns a result to the channel.
+    /// Takes ownership of \a result.args.
+    virtual void ReturnResult(Result result) = 0;  // NOLINT
+
+    /// Returns a transient error to the channel.
+    /// If the resolver does not set the GRPC_ERROR_INT_GRPC_STATUS
+    /// attribute on the error, calls will be failed with status UNKNOWN.
+    virtual void ReturnError(grpc_error* error) = 0;
+
+    // TODO(yashkt): As part of the service config error handling
+    // changes, add a method to parse the service config JSON string.
+  };
+
+  // Not copyable nor movable.
+  Resolver(const Resolver&) = delete;
+  Resolver& operator=(const Resolver&) = delete;
+  virtual ~Resolver();
+
+  /// Starts resolving.
+  virtual void StartLocked() = 0;
+
+  /// Asks the resolver to obtain an updated resolver result, if
+  /// applicable.
+  ///
+  /// This is useful for pull-based implementations to decide when to
+  /// re-resolve.  However, the implementation is not required to
+  /// re-resolve immediately upon receiving this call; it may instead
+  /// elect to delay based on some configured minimum time between
+  /// queries, to avoid hammering the name service with queries.
+  ///
+  /// For push-based implementations, this may be a no-op.
+  ///
+  /// Note: Implementations must not invoke any method on the
+  /// ResultHandler from within this call.
+  virtual void RequestReresolutionLocked() {}
+
+  /// Resets the re-resolution backoff, if any.
+  /// This needs to be implemented only by pull-based implementations;
+  /// for push-based implementations, it will be a no-op.
+  /// TODO(roth): Pull the backoff code out of resolver and into
+  /// client_channel, so that it can be shared across resolver
+  /// implementations.  At that point, this method can go away.
+  virtual void ResetBackoffLocked() {}
+
+  // Note: This must be invoked while holding the combiner.
+  void Orphan() override {
+    ShutdownLocked();
+    Unref();
+  }
+
+ protected:
+  /// Does NOT take ownership of the reference to \a combiner.
+  // TODO(roth): Once we have a C++-like interface for combiners, this
+  // API should change to take a RefCountedPtr<>, so that we always take
+  // ownership of a new ref.
+  explicit Resolver(Combiner* combiner,
+                    std::unique_ptr<ResultHandler> result_handler);
+
+  /// Shuts down the resolver.
+  virtual void ShutdownLocked() = 0;
+
+  Combiner* combiner() const { return combiner_; }
+
+  ResultHandler* result_handler() const { return result_handler_.get(); }
+
+ private:
+  std::unique_ptr<ResultHandler> result_handler_;
+  Combiner* combiner_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc
new file mode 100644
index 0000000..a821543
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc	
@@ -0,0 +1,521 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if GRPC_ARES == 1
+
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include <address_sorting/address_sorting.h>
+
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/gethostname.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/json/json.h"
+
+#define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_DNS_RECONNECT_JITTER 0.2
+
+namespace grpc_core {
+
+namespace {
+
+const char kDefaultPort[] = "https";
+
+class AresDnsResolver : public Resolver {
+ public:
+  explicit AresDnsResolver(ResolverArgs args);
+
+  void StartLocked() override;
+
+  void RequestReresolutionLocked() override;
+
+  void ResetBackoffLocked() override;
+
+  void ShutdownLocked() override;
+
+ private:
+  virtual ~AresDnsResolver();
+
+  void MaybeStartResolvingLocked();
+  void StartResolvingLocked();
+
+  static void OnNextResolution(void* arg, grpc_error* error);
+  static void OnResolved(void* arg, grpc_error* error);
+  static void OnNextResolutionLocked(void* arg, grpc_error* error);
+  static void OnResolvedLocked(void* arg, grpc_error* error);
+
+  /// DNS server to use (if not system default)
+  char* dns_server_;
+  /// name to resolve (usually the same as target_name)
+  char* name_to_resolve_;
+  /// channel args
+  grpc_channel_args* channel_args_;
+  /// whether to request the service config
+  bool request_service_config_;
+  /// pollset_set to drive the name resolution process
+  grpc_pollset_set* interested_parties_;
+  /// closures used by the combiner
+  grpc_closure on_next_resolution_;
+  grpc_closure on_resolved_;
+  /// are we currently resolving?
+  bool resolving_ = false;
+  /// the pending resolving request
+  grpc_ares_request* pending_request_ = nullptr;
+  /// next resolution timer
+  bool have_next_resolution_timer_ = false;
+  grpc_timer next_resolution_timer_;
+  /// min interval between DNS requests
+  grpc_millis min_time_between_resolutions_;
+  /// timestamp of last DNS request
+  grpc_millis last_resolution_timestamp_ = -1;
+  /// retry backoff state
+  BackOff backoff_;
+  /// currently resolving addresses
+  std::unique_ptr<ServerAddressList> addresses_;
+  /// currently resolving service config
+  char* service_config_json_ = nullptr;
+  // has shutdown been initiated
+  bool shutdown_initiated_ = false;
+  // timeout in milliseconds for active DNS queries
+  int query_timeout_ms_;
+  // whether or not to enable SRV DNS queries
+  bool enable_srv_queries_;
+};
+
+AresDnsResolver::AresDnsResolver(ResolverArgs args)
+    : Resolver(args.combiner, std::move(args.result_handler)),
+      backoff_(
+          BackOff::Options()
+              .set_initial_backoff(GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS *
+                                   1000)
+              .set_multiplier(GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER)
+              .set_jitter(GRPC_DNS_RECONNECT_JITTER)
+              .set_max_backoff(GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS * 1000)) {
+  // Get name to resolve from URI path.
+  const char* path = args.uri->path;
+  if (path[0] == '/') ++path;
+  name_to_resolve_ = gpr_strdup(path);
+  // Get DNS server from URI authority.
+  dns_server_ = nullptr;
+  if (0 != strcmp(args.uri->authority, "")) {
+    dns_server_ = gpr_strdup(args.uri->authority);
+  }
+  channel_args_ = grpc_channel_args_copy(args.args);
+  // Disable service config option
+  const grpc_arg* arg = grpc_channel_args_find(
+      channel_args_, GRPC_ARG_SERVICE_CONFIG_DISABLE_RESOLUTION);
+  request_service_config_ = !grpc_channel_arg_get_bool(arg, true);
+  // Min time b/t resolutions option
+  arg = grpc_channel_args_find(channel_args_,
+                               GRPC_ARG_DNS_MIN_TIME_BETWEEN_RESOLUTIONS_MS);
+  min_time_between_resolutions_ =
+      grpc_channel_arg_get_integer(arg, {1000 * 30, 0, INT_MAX});
+  // Enable SRV queries option
+  arg = grpc_channel_args_find(channel_args_, GRPC_ARG_DNS_ENABLE_SRV_QUERIES);
+  enable_srv_queries_ = grpc_channel_arg_get_bool(arg, false);
+  interested_parties_ = grpc_pollset_set_create();
+  if (args.pollset_set != nullptr) {
+    grpc_pollset_set_add_pollset_set(interested_parties_, args.pollset_set);
+  }
+
+  const grpc_arg* query_timeout_ms_arg =
+      grpc_channel_args_find(channel_args_, GRPC_ARG_DNS_ARES_QUERY_TIMEOUT_MS);
+  query_timeout_ms_ = grpc_channel_arg_get_integer(
+      query_timeout_ms_arg,
+      {GRPC_DNS_ARES_DEFAULT_QUERY_TIMEOUT_MS, 0, INT_MAX});
+}
+
+AresDnsResolver::~AresDnsResolver() {
+  GRPC_CARES_TRACE_LOG("resolver:%p destroying AresDnsResolver", this);
+  grpc_pollset_set_destroy(interested_parties_);
+  gpr_free(dns_server_);
+  gpr_free(name_to_resolve_);
+  grpc_channel_args_destroy(channel_args_);
+}
+
+void AresDnsResolver::StartLocked() {
+  GRPC_CARES_TRACE_LOG("resolver:%p AresDnsResolver::StartLocked() is called.",
+                       this);
+  MaybeStartResolvingLocked();
+}
+
+void AresDnsResolver::RequestReresolutionLocked() {
+  if (!resolving_) {
+    MaybeStartResolvingLocked();
+  }
+}
+
+void AresDnsResolver::ResetBackoffLocked() {
+  if (have_next_resolution_timer_) {
+    grpc_timer_cancel(&next_resolution_timer_);
+  }
+  backoff_.Reset();
+}
+
+void AresDnsResolver::ShutdownLocked() {
+  shutdown_initiated_ = true;
+  if (have_next_resolution_timer_) {
+    grpc_timer_cancel(&next_resolution_timer_);
+  }
+  if (pending_request_ != nullptr) {
+    grpc_cancel_ares_request_locked(pending_request_);
+  }
+}
+
+void AresDnsResolver::OnNextResolution(void* arg, grpc_error* error) {
+  AresDnsResolver* r = static_cast<AresDnsResolver*>(arg);
+  r->combiner()->Run(GRPC_CLOSURE_INIT(&r->on_next_resolution_,
+                                       OnNextResolutionLocked, r, nullptr),
+                     GRPC_ERROR_REF(error));
+}
+
+void AresDnsResolver::OnNextResolutionLocked(void* arg, grpc_error* error) {
+  AresDnsResolver* r = static_cast<AresDnsResolver*>(arg);
+  GRPC_CARES_TRACE_LOG(
+      "resolver:%p re-resolution timer fired. error: %s. shutdown_initiated_: "
+      "%d",
+      r, grpc_error_string(error), r->shutdown_initiated_);
+  r->have_next_resolution_timer_ = false;
+  if (error == GRPC_ERROR_NONE && !r->shutdown_initiated_) {
+    if (!r->resolving_) {
+      GRPC_CARES_TRACE_LOG(
+          "resolver:%p start resolving due to re-resolution timer", r);
+      r->StartResolvingLocked();
+    }
+  }
+  r->Unref(DEBUG_LOCATION, "next_resolution_timer");
+}
+
+bool ValueInJsonArray(const Json::Array& array, const char* value) {
+  for (const Json& entry : array) {
+    if (entry.type() == Json::Type::STRING && entry.string_value() == value) {
+      return true;
+    }
+  }
+  return false;
+}
+
+std::string ChooseServiceConfig(char* service_config_choice_json,
+                                grpc_error** error) {
+  Json json = Json::Parse(service_config_choice_json, error);
+  if (*error != GRPC_ERROR_NONE) return "";
+  if (json.type() != Json::Type::ARRAY) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Service Config Choices, error: should be of type array");
+    return "";
+  }
+  const Json* service_config = nullptr;
+  InlinedVector<grpc_error*, 4> error_list;
+  for (const Json& choice : json.array_value()) {
+    if (choice.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Service Config Choice, error: should be of type object"));
+      continue;
+    }
+    // Check client language, if specified.
+    auto it = choice.object_value().find("clientLanguage");
+    if (it != choice.object_value().end()) {
+      if (it->second.type() != Json::Type::ARRAY) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:clientLanguage error:should be of type array"));
+      } else if (!ValueInJsonArray(it->second.array_value(), "c++")) {
+        continue;
+      }
+    }
+    // Check client hostname, if specified.
+    it = choice.object_value().find("clientHostname");
+    if (it != choice.object_value().end()) {
+      if (it->second.type() != Json::Type::ARRAY) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:clientHostname error:should be of type array"));
+      } else {
+        char* hostname = grpc_gethostname();
+        if (hostname == nullptr ||
+            !ValueInJsonArray(it->second.array_value(), hostname)) {
+          continue;
+        }
+      }
+    }
+    // Check percentage, if specified.
+    it = choice.object_value().find("percentage");
+    if (it != choice.object_value().end()) {
+      if (it->second.type() != Json::Type::NUMBER) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:percentage error:should be of type number"));
+      } else {
+        int random_pct = rand() % 100;
+        int percentage;
+        if (sscanf(it->second.string_value().c_str(), "%d", &percentage) != 1) {
+          error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+              "field:percentage error:should be of type integer"));
+        } else if (random_pct > percentage || percentage == 0) {
+          continue;
+        }
+      }
+    }
+    // Found service config.
+    it = choice.object_value().find("serviceConfig");
+    if (it == choice.object_value().end()) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:serviceConfig error:required field missing"));
+    } else if (it->second.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:serviceConfig error:should be of type object"));
+    } else if (service_config == nullptr) {
+      service_config = &it->second;
+    }
+  }
+  if (!error_list.empty()) {
+    service_config = nullptr;
+    *error = GRPC_ERROR_CREATE_FROM_VECTOR("Service Config Choices Parser",
+                                           &error_list);
+  }
+  if (service_config == nullptr) return "";
+  return service_config->Dump();
+}
+
+void AresDnsResolver::OnResolved(void* arg, grpc_error* error) {
+  AresDnsResolver* r = static_cast<AresDnsResolver*>(arg);
+  r->combiner()->Run(
+      GRPC_CLOSURE_INIT(&r->on_resolved_, OnResolvedLocked, r, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void AresDnsResolver::OnResolvedLocked(void* arg, grpc_error* error) {
+  AresDnsResolver* r = static_cast<AresDnsResolver*>(arg);
+  GPR_ASSERT(r->resolving_);
+  r->resolving_ = false;
+  gpr_free(r->pending_request_);
+  r->pending_request_ = nullptr;
+  if (r->shutdown_initiated_) {
+    r->Unref(DEBUG_LOCATION, "OnResolvedLocked() shutdown");
+    return;
+  }
+  if (r->addresses_ != nullptr) {
+    Result result;
+    result.addresses = std::move(*r->addresses_);
+    if (r->service_config_json_ != nullptr) {
+      std::string service_config_string = ChooseServiceConfig(
+          r->service_config_json_, &result.service_config_error);
+      gpr_free(r->service_config_json_);
+      if (result.service_config_error == GRPC_ERROR_NONE &&
+          !service_config_string.empty()) {
+        GRPC_CARES_TRACE_LOG("resolver:%p selected service config choice: %s",
+                             r, service_config_string.c_str());
+        result.service_config = ServiceConfig::Create(
+            service_config_string, &result.service_config_error);
+      }
+    }
+    result.args = grpc_channel_args_copy(r->channel_args_);
+    r->result_handler()->ReturnResult(std::move(result));
+    r->addresses_.reset();
+    // Reset backoff state so that we start from the beginning when the
+    // next request gets triggered.
+    r->backoff_.Reset();
+  } else {
+    GRPC_CARES_TRACE_LOG("resolver:%p dns resolution failed: %s", r,
+                         grpc_error_string(error));
+    r->result_handler()->ReturnError(grpc_error_set_int(
+        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+            "DNS resolution failed", &error, 1),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    // Set retry timer.
+    grpc_millis next_try = r->backoff_.NextAttemptTime();
+    grpc_millis timeout = next_try - ExecCtx::Get()->Now();
+    GRPC_CARES_TRACE_LOG("resolver:%p dns resolution failed (will retry): %s",
+                         r, grpc_error_string(error));
+    GPR_ASSERT(!r->have_next_resolution_timer_);
+    r->have_next_resolution_timer_ = true;
+    // TODO(roth): We currently deal with this ref manually.  Once the
+    // new closure API is done, find a way to track this ref with the timer
+    // callback as part of the type system.
+    r->Ref(DEBUG_LOCATION, "retry-timer").release();
+    if (timeout > 0) {
+      GRPC_CARES_TRACE_LOG("resolver:%p retrying in %" PRId64 " milliseconds",
+                           r, timeout);
+    } else {
+      GRPC_CARES_TRACE_LOG("resolver:%p retrying immediately", r);
+    }
+    GRPC_CLOSURE_INIT(&r->on_next_resolution_, OnNextResolution, r,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&r->next_resolution_timer_, next_try,
+                    &r->on_next_resolution_);
+  }
+  r->Unref(DEBUG_LOCATION, "dns-resolving");
+}
+
+void AresDnsResolver::MaybeStartResolvingLocked() {
+  // If there is an existing timer, the time it fires is the earliest time we
+  // can start the next resolution.
+  if (have_next_resolution_timer_) return;
+  if (last_resolution_timestamp_ >= 0) {
+    const grpc_millis earliest_next_resolution =
+        last_resolution_timestamp_ + min_time_between_resolutions_;
+    const grpc_millis ms_until_next_resolution =
+        earliest_next_resolution - grpc_core::ExecCtx::Get()->Now();
+    if (ms_until_next_resolution > 0) {
+      const grpc_millis last_resolution_ago =
+          grpc_core::ExecCtx::Get()->Now() - last_resolution_timestamp_;
+      GRPC_CARES_TRACE_LOG(
+          "resolver:%p In cooldown from last resolution (from %" PRId64
+          " ms ago). Will resolve again in %" PRId64 " ms",
+          this, last_resolution_ago, ms_until_next_resolution);
+      have_next_resolution_timer_ = true;
+      // TODO(roth): We currently deal with this ref manually.  Once the
+      // new closure API is done, find a way to track this ref with the timer
+      // callback as part of the type system.
+      Ref(DEBUG_LOCATION, "next_resolution_timer_cooldown").release();
+      GRPC_CLOSURE_INIT(&on_next_resolution_, OnNextResolution, this,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&next_resolution_timer_,
+                      ExecCtx::Get()->Now() + ms_until_next_resolution,
+                      &on_next_resolution_);
+      return;
+    }
+  }
+  StartResolvingLocked();
+}
+
+void AresDnsResolver::StartResolvingLocked() {
+  // TODO(roth): We currently deal with this ref manually.  Once the
+  // new closure API is done, find a way to track this ref with the timer
+  // callback as part of the type system.
+  Ref(DEBUG_LOCATION, "dns-resolving").release();
+  GPR_ASSERT(!resolving_);
+  resolving_ = true;
+  service_config_json_ = nullptr;
+  GRPC_CLOSURE_INIT(&on_resolved_, OnResolved, this, grpc_schedule_on_exec_ctx);
+  pending_request_ = grpc_dns_lookup_ares_locked(
+      dns_server_, name_to_resolve_, kDefaultPort, interested_parties_,
+      &on_resolved_, &addresses_, enable_srv_queries_ /* check_grpclb */,
+      request_service_config_ ? &service_config_json_ : nullptr,
+      query_timeout_ms_, combiner());
+  last_resolution_timestamp_ = grpc_core::ExecCtx::Get()->Now();
+  GRPC_CARES_TRACE_LOG("resolver:%p Started resolving. pending_request_:%p",
+                       this, pending_request_);
+}
+
+//
+// Factory
+//
+
+class AresDnsResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* /*uri*/) const override { return true; }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    return MakeOrphanable<AresDnsResolver>(std::move(args));
+  }
+
+  const char* scheme() const override { return "dns"; }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+extern grpc_address_resolver_vtable* grpc_resolve_address_impl;
+static grpc_address_resolver_vtable* default_resolver;
+
+static grpc_error* blocking_resolve_address_ares(
+    const char* name, const char* default_port,
+    grpc_resolved_addresses** addresses) {
+  return default_resolver->blocking_resolve_address(name, default_port,
+                                                    addresses);
+}
+
+static grpc_address_resolver_vtable ares_resolver = {
+    grpc_resolve_address_ares, blocking_resolve_address_ares};
+
+#ifdef GRPC_UV
+/* TODO(murgatroid99): Remove this when we want the cares resolver to be the
+ * default when using libuv */
+static bool should_use_ares(const char* resolver_env) {
+  return resolver_env != nullptr && gpr_stricmp(resolver_env, "ares") == 0;
+}
+#else  /* GRPC_UV */
+static bool should_use_ares(const char* resolver_env) {
+  // TODO(lidiz): Remove the "g_custom_iomgr_enabled" flag once c-ares support
+  // custom IO managers (e.g. gevent).
+  return !g_custom_iomgr_enabled &&
+         (resolver_env == nullptr || strlen(resolver_env) == 0 ||
+          gpr_stricmp(resolver_env, "ares") == 0);
+}
+#endif /* GRPC_UV */
+
+static bool g_use_ares_dns_resolver;
+
+void grpc_resolver_dns_ares_init() {
+  grpc_core::UniquePtr<char> resolver =
+      GPR_GLOBAL_CONFIG_GET(grpc_dns_resolver);
+  if (should_use_ares(resolver.get())) {
+    g_use_ares_dns_resolver = true;
+    gpr_log(GPR_DEBUG, "Using ares dns resolver");
+    address_sorting_init();
+    grpc_error* error = grpc_ares_init();
+    if (error != GRPC_ERROR_NONE) {
+      GRPC_LOG_IF_ERROR("grpc_ares_init() failed", error);
+      return;
+    }
+    if (default_resolver == nullptr) {
+      default_resolver = grpc_resolve_address_impl;
+    }
+    grpc_set_resolver_impl(&ares_resolver);
+    grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+        absl::make_unique<grpc_core::AresDnsResolverFactory>());
+  } else {
+    g_use_ares_dns_resolver = false;
+  }
+}
+
+void grpc_resolver_dns_ares_shutdown() {
+  if (g_use_ares_dns_resolver) {
+    address_sorting_shutdown();
+    grpc_ares_cleanup();
+  }
+}
+
+#else /* GRPC_ARES == 1 */
+
+void grpc_resolver_dns_ares_init(void) {}
+
+void grpc_resolver_dns_ares_shutdown(void) {}
+
+#endif /* GRPC_ARES == 1 */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.cc
new file mode 100644
index 0000000..626b725
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.cc	
@@ -0,0 +1,484 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1
+
+#include <ares.h>
+#include <string.h>
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct fd_node {
+  /** the owner of this fd node */
+  grpc_ares_ev_driver* ev_driver;
+  /** a closure wrapping on_readable_locked, which should be
+     invoked when the grpc_fd in this node becomes readable. */
+  grpc_closure read_closure;
+  /** a closure wrapping on_writable_locked, which should be
+     invoked when the grpc_fd in this node becomes writable. */
+  grpc_closure write_closure;
+  /** next fd node in the list */
+  struct fd_node* next;
+
+  /** wrapped fd that's polled by grpc's poller for the current platform */
+  grpc_core::GrpcPolledFd* grpc_polled_fd;
+  /** if the readable closure has been registered */
+  bool readable_registered;
+  /** if the writable closure has been registered */
+  bool writable_registered;
+  /** if the fd has been shutdown yet from grpc iomgr perspective */
+  bool already_shutdown;
+} fd_node;
+
+struct grpc_ares_ev_driver {
+  /** the ares_channel owned by this event driver */
+  ares_channel channel;
+  /** pollset set for driving the IO events of the channel */
+  grpc_pollset_set* pollset_set;
+  /** refcount of the event driver */
+  gpr_refcount refs;
+
+  /** combiner to synchronize c-ares and I/O callbacks on */
+  grpc_core::Combiner* combiner;
+  /** a list of grpc_fd that this event driver is currently using. */
+  fd_node* fds;
+  /** is this event driver currently working? */
+  bool working;
+  /** is this event driver being shut down */
+  bool shutting_down;
+  /** request object that's using this ev driver */
+  grpc_ares_request* request;
+  /** Owned by the ev_driver. Creates new GrpcPolledFd's */
+  std::unique_ptr<grpc_core::GrpcPolledFdFactory> polled_fd_factory;
+  /** query timeout in milliseconds */
+  int query_timeout_ms;
+  /** alarm to cancel active queries */
+  grpc_timer query_timeout;
+  /** cancels queries on a timeout */
+  grpc_closure on_timeout_locked;
+  /** alarm to poll ares_process on in case fd events don't happen */
+  grpc_timer ares_backup_poll_alarm;
+  /** polls ares_process on a periodic timer */
+  grpc_closure on_ares_backup_poll_alarm_locked;
+};
+
+static void grpc_ares_notify_on_event_locked(grpc_ares_ev_driver* ev_driver);
+
+static grpc_ares_ev_driver* grpc_ares_ev_driver_ref(
+    grpc_ares_ev_driver* ev_driver) {
+  GRPC_CARES_TRACE_LOG("request:%p Ref ev_driver %p", ev_driver->request,
+                       ev_driver);
+  gpr_ref(&ev_driver->refs);
+  return ev_driver;
+}
+
+static void grpc_ares_ev_driver_unref(grpc_ares_ev_driver* ev_driver) {
+  GRPC_CARES_TRACE_LOG("request:%p Unref ev_driver %p", ev_driver->request,
+                       ev_driver);
+  if (gpr_unref(&ev_driver->refs)) {
+    GRPC_CARES_TRACE_LOG("request:%p destroy ev_driver %p", ev_driver->request,
+                         ev_driver);
+    GPR_ASSERT(ev_driver->fds == nullptr);
+    GRPC_COMBINER_UNREF(ev_driver->combiner, "free ares event driver");
+    ares_destroy(ev_driver->channel);
+    grpc_ares_complete_request_locked(ev_driver->request);
+    delete ev_driver;
+  }
+}
+
+static void fd_node_destroy_locked(fd_node* fdn) {
+  GRPC_CARES_TRACE_LOG("request:%p delete fd: %s", fdn->ev_driver->request,
+                       fdn->grpc_polled_fd->GetName());
+  GPR_ASSERT(!fdn->readable_registered);
+  GPR_ASSERT(!fdn->writable_registered);
+  GPR_ASSERT(fdn->already_shutdown);
+  delete fdn->grpc_polled_fd;
+  gpr_free(fdn);
+}
+
+static void fd_node_shutdown_locked(fd_node* fdn, const char* reason) {
+  if (!fdn->already_shutdown) {
+    fdn->already_shutdown = true;
+    fdn->grpc_polled_fd->ShutdownLocked(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(reason));
+  }
+}
+
+static void on_timeout(void* arg, grpc_error* error);
+static void on_timeout_locked(void* arg, grpc_error* error);
+
+static void on_ares_backup_poll_alarm(void* arg, grpc_error* error);
+static void on_ares_backup_poll_alarm_locked(void* arg, grpc_error* error);
+
+static void noop_inject_channel_config(ares_channel /*channel*/) {}
+
+void (*grpc_ares_test_only_inject_config)(ares_channel channel) =
+    noop_inject_channel_config;
+
+grpc_error* grpc_ares_ev_driver_create_locked(grpc_ares_ev_driver** ev_driver,
+                                              grpc_pollset_set* pollset_set,
+                                              int query_timeout_ms,
+                                              grpc_core::Combiner* combiner,
+                                              grpc_ares_request* request) {
+  *ev_driver = new grpc_ares_ev_driver();
+  ares_options opts;
+  memset(&opts, 0, sizeof(opts));
+  opts.flags |= ARES_FLAG_STAYOPEN;
+  int status = ares_init_options(&(*ev_driver)->channel, &opts, ARES_OPT_FLAGS);
+  grpc_ares_test_only_inject_config((*ev_driver)->channel);
+  GRPC_CARES_TRACE_LOG("request:%p grpc_ares_ev_driver_create_locked", request);
+  if (status != ARES_SUCCESS) {
+    char* err_msg;
+    gpr_asprintf(&err_msg, "Failed to init ares channel. C-ares error: %s",
+                 ares_strerror(status));
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_msg);
+    gpr_free(err_msg);
+    gpr_free(*ev_driver);
+    return err;
+  }
+  (*ev_driver)->combiner = GRPC_COMBINER_REF(combiner, "ares event driver");
+  gpr_ref_init(&(*ev_driver)->refs, 1);
+  (*ev_driver)->pollset_set = pollset_set;
+  (*ev_driver)->fds = nullptr;
+  (*ev_driver)->working = false;
+  (*ev_driver)->shutting_down = false;
+  (*ev_driver)->request = request;
+  (*ev_driver)->polled_fd_factory =
+      grpc_core::NewGrpcPolledFdFactory((*ev_driver)->combiner);
+  (*ev_driver)
+      ->polled_fd_factory->ConfigureAresChannelLocked((*ev_driver)->channel);
+  (*ev_driver)->query_timeout_ms = query_timeout_ms;
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_ares_ev_driver_on_queries_complete_locked(
+    grpc_ares_ev_driver* ev_driver) {
+  // We mark the event driver as being shut down. If the event driver
+  // is working, grpc_ares_notify_on_event_locked will shut down the
+  // fds; if it's not working, there are no fds to shut down.
+  ev_driver->shutting_down = true;
+  grpc_timer_cancel(&ev_driver->query_timeout);
+  grpc_timer_cancel(&ev_driver->ares_backup_poll_alarm);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+void grpc_ares_ev_driver_shutdown_locked(grpc_ares_ev_driver* ev_driver) {
+  ev_driver->shutting_down = true;
+  fd_node* fn = ev_driver->fds;
+  while (fn != nullptr) {
+    fd_node_shutdown_locked(fn, "grpc_ares_ev_driver_shutdown");
+    fn = fn->next;
+  }
+}
+
+// Search fd in the fd_node list head. This is an O(n) search, the max possible
+// value of n is ARES_GETSOCK_MAXNUM (16). n is typically 1 - 2 in our tests.
+static fd_node* pop_fd_node_locked(fd_node** head, ares_socket_t as) {
+  fd_node dummy_head;
+  dummy_head.next = *head;
+  fd_node* node = &dummy_head;
+  while (node->next != nullptr) {
+    if (node->next->grpc_polled_fd->GetWrappedAresSocketLocked() == as) {
+      fd_node* ret = node->next;
+      node->next = node->next->next;
+      *head = dummy_head.next;
+      return ret;
+    }
+    node = node->next;
+  }
+  return nullptr;
+}
+
+static grpc_millis calculate_next_ares_backup_poll_alarm_ms(
+    grpc_ares_ev_driver* driver) {
+  // An alternative here could be to use ares_timeout to try to be more
+  // accurate, but that would require using "struct timeval"'s, which just makes
+  // things a bit more complicated. So just poll every second, as suggested
+  // by the c-ares code comments.
+  grpc_millis ms_until_next_ares_backup_poll_alarm = 1000;
+  GRPC_CARES_TRACE_LOG(
+      "request:%p ev_driver=%p. next ares process poll time in "
+      "%" PRId64 " ms",
+      driver->request, driver, ms_until_next_ares_backup_poll_alarm);
+  return ms_until_next_ares_backup_poll_alarm +
+         grpc_core::ExecCtx::Get()->Now();
+}
+
+static void on_timeout(void* arg, grpc_error* error) {
+  grpc_ares_ev_driver* driver = static_cast<grpc_ares_ev_driver*>(arg);
+  driver->combiner->Run(GRPC_CLOSURE_INIT(&driver->on_timeout_locked,
+                                          on_timeout_locked, driver, nullptr),
+                        GRPC_ERROR_REF(error));
+}
+
+static void on_timeout_locked(void* arg, grpc_error* error) {
+  grpc_ares_ev_driver* driver = static_cast<grpc_ares_ev_driver*>(arg);
+  GRPC_CARES_TRACE_LOG(
+      "request:%p ev_driver=%p on_timeout_locked. driver->shutting_down=%d. "
+      "err=%s",
+      driver->request, driver, driver->shutting_down, grpc_error_string(error));
+  if (!driver->shutting_down && error == GRPC_ERROR_NONE) {
+    grpc_ares_ev_driver_shutdown_locked(driver);
+  }
+  grpc_ares_ev_driver_unref(driver);
+}
+
+static void on_ares_backup_poll_alarm(void* arg, grpc_error* error) {
+  grpc_ares_ev_driver* driver = static_cast<grpc_ares_ev_driver*>(arg);
+  driver->combiner->Run(
+      GRPC_CLOSURE_INIT(&driver->on_ares_backup_poll_alarm_locked,
+                        on_ares_backup_poll_alarm_locked, driver, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+/* In case of non-responsive DNS servers, dropped packets, etc., c-ares has
+ * intelligent timeout and retry logic, which we can take advantage of by
+ * polling ares_process_fd on time intervals. Overall, the c-ares library is
+ * meant to be called into and given a chance to proceed name resolution:
+ *   a) when fd events happen
+ *   b) when some time has passed without fd events having happened
+ * For the latter, we use this backup poller. Also see
+ * https://github.com/grpc/grpc/pull/17688 description for more details. */
+static void on_ares_backup_poll_alarm_locked(void* arg, grpc_error* error) {
+  grpc_ares_ev_driver* driver = static_cast<grpc_ares_ev_driver*>(arg);
+  GRPC_CARES_TRACE_LOG(
+      "request:%p ev_driver=%p on_ares_backup_poll_alarm_locked. "
+      "driver->shutting_down=%d. "
+      "err=%s",
+      driver->request, driver, driver->shutting_down, grpc_error_string(error));
+  if (!driver->shutting_down && error == GRPC_ERROR_NONE) {
+    fd_node* fdn = driver->fds;
+    while (fdn != nullptr) {
+      if (!fdn->already_shutdown) {
+        GRPC_CARES_TRACE_LOG(
+            "request:%p ev_driver=%p on_ares_backup_poll_alarm_locked; "
+            "ares_process_fd. fd=%s",
+            driver->request, driver, fdn->grpc_polled_fd->GetName());
+        ares_socket_t as = fdn->grpc_polled_fd->GetWrappedAresSocketLocked();
+        ares_process_fd(driver->channel, as, as);
+      }
+      fdn = fdn->next;
+    }
+    if (!driver->shutting_down) {
+      grpc_millis next_ares_backup_poll_alarm =
+          calculate_next_ares_backup_poll_alarm_ms(driver);
+      grpc_ares_ev_driver_ref(driver);
+      GRPC_CLOSURE_INIT(&driver->on_ares_backup_poll_alarm_locked,
+                        on_ares_backup_poll_alarm, driver,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&driver->ares_backup_poll_alarm,
+                      next_ares_backup_poll_alarm,
+                      &driver->on_ares_backup_poll_alarm_locked);
+    }
+    grpc_ares_notify_on_event_locked(driver);
+  }
+  grpc_ares_ev_driver_unref(driver);
+}
+
+static void on_readable_locked(void* arg, grpc_error* error) {
+  fd_node* fdn = static_cast<fd_node*>(arg);
+  GPR_ASSERT(fdn->readable_registered);
+  grpc_ares_ev_driver* ev_driver = fdn->ev_driver;
+  const ares_socket_t as = fdn->grpc_polled_fd->GetWrappedAresSocketLocked();
+  fdn->readable_registered = false;
+  GRPC_CARES_TRACE_LOG("request:%p readable on %s", fdn->ev_driver->request,
+                       fdn->grpc_polled_fd->GetName());
+  if (error == GRPC_ERROR_NONE) {
+    do {
+      ares_process_fd(ev_driver->channel, as, ARES_SOCKET_BAD);
+    } while (fdn->grpc_polled_fd->IsFdStillReadableLocked());
+  } else {
+    // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
+    // timed out. The pending lookups made on this ev_driver will be cancelled
+    // by the following ares_cancel() and the on_done callbacks will be invoked
+    // with a status of ARES_ECANCELLED. The remaining file descriptors in this
+    // ev_driver will be cleaned up in the follwing
+    // grpc_ares_notify_on_event_locked().
+    ares_cancel(ev_driver->channel);
+  }
+  grpc_ares_notify_on_event_locked(ev_driver);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+static void on_readable(void* arg, grpc_error* error) {
+  fd_node* fdn = static_cast<fd_node*>(arg);
+  fdn->ev_driver->combiner->Run(
+      GRPC_CLOSURE_INIT(&fdn->read_closure, on_readable_locked, fdn, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+static void on_writable_locked(void* arg, grpc_error* error) {
+  fd_node* fdn = static_cast<fd_node*>(arg);
+  GPR_ASSERT(fdn->writable_registered);
+  grpc_ares_ev_driver* ev_driver = fdn->ev_driver;
+  const ares_socket_t as = fdn->grpc_polled_fd->GetWrappedAresSocketLocked();
+  fdn->writable_registered = false;
+  GRPC_CARES_TRACE_LOG("request:%p writable on %s", ev_driver->request,
+                       fdn->grpc_polled_fd->GetName());
+  if (error == GRPC_ERROR_NONE) {
+    ares_process_fd(ev_driver->channel, ARES_SOCKET_BAD, as);
+  } else {
+    // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
+    // timed out. The pending lookups made on this ev_driver will be cancelled
+    // by the following ares_cancel() and the on_done callbacks will be invoked
+    // with a status of ARES_ECANCELLED. The remaining file descriptors in this
+    // ev_driver will be cleaned up in the follwing
+    // grpc_ares_notify_on_event_locked().
+    ares_cancel(ev_driver->channel);
+  }
+  grpc_ares_notify_on_event_locked(ev_driver);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+static void on_writable(void* arg, grpc_error* error) {
+  fd_node* fdn = static_cast<fd_node*>(arg);
+  fdn->ev_driver->combiner->Run(
+      GRPC_CLOSURE_INIT(&fdn->write_closure, on_writable_locked, fdn, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+ares_channel* grpc_ares_ev_driver_get_channel_locked(
+    grpc_ares_ev_driver* ev_driver) {
+  return &ev_driver->channel;
+}
+
+// Get the file descriptors used by the ev_driver's ares channel, register
+// driver_closure with these filedescriptors.
+static void grpc_ares_notify_on_event_locked(grpc_ares_ev_driver* ev_driver) {
+  fd_node* new_list = nullptr;
+  if (!ev_driver->shutting_down) {
+    ares_socket_t socks[ARES_GETSOCK_MAXNUM];
+    int socks_bitmask =
+        ares_getsock(ev_driver->channel, socks, ARES_GETSOCK_MAXNUM);
+    for (size_t i = 0; i < ARES_GETSOCK_MAXNUM; i++) {
+      if (ARES_GETSOCK_READABLE(socks_bitmask, i) ||
+          ARES_GETSOCK_WRITABLE(socks_bitmask, i)) {
+        fd_node* fdn = pop_fd_node_locked(&ev_driver->fds, socks[i]);
+        // Create a new fd_node if sock[i] is not in the fd_node list.
+        if (fdn == nullptr) {
+          fdn = static_cast<fd_node*>(gpr_malloc(sizeof(fd_node)));
+          fdn->grpc_polled_fd =
+              ev_driver->polled_fd_factory->NewGrpcPolledFdLocked(
+                  socks[i], ev_driver->pollset_set, ev_driver->combiner);
+          GRPC_CARES_TRACE_LOG("request:%p new fd: %s", ev_driver->request,
+                               fdn->grpc_polled_fd->GetName());
+          fdn->ev_driver = ev_driver;
+          fdn->readable_registered = false;
+          fdn->writable_registered = false;
+          fdn->already_shutdown = false;
+        }
+        fdn->next = new_list;
+        new_list = fdn;
+        // Register read_closure if the socket is readable and read_closure has
+        // not been registered with this socket.
+        if (ARES_GETSOCK_READABLE(socks_bitmask, i) &&
+            !fdn->readable_registered) {
+          grpc_ares_ev_driver_ref(ev_driver);
+          GRPC_CARES_TRACE_LOG("request:%p notify read on: %s",
+                               ev_driver->request,
+                               fdn->grpc_polled_fd->GetName());
+          GRPC_CLOSURE_INIT(&fdn->read_closure, on_readable, fdn,
+                            grpc_schedule_on_exec_ctx);
+          fdn->grpc_polled_fd->RegisterForOnReadableLocked(&fdn->read_closure);
+          fdn->readable_registered = true;
+        }
+        // Register write_closure if the socket is writable and write_closure
+        // has not been registered with this socket.
+        if (ARES_GETSOCK_WRITABLE(socks_bitmask, i) &&
+            !fdn->writable_registered) {
+          GRPC_CARES_TRACE_LOG("request:%p notify write on: %s",
+                               ev_driver->request,
+                               fdn->grpc_polled_fd->GetName());
+          grpc_ares_ev_driver_ref(ev_driver);
+          GRPC_CLOSURE_INIT(&fdn->write_closure, on_writable, fdn,
+                            grpc_schedule_on_exec_ctx);
+          fdn->grpc_polled_fd->RegisterForOnWriteableLocked(
+              &fdn->write_closure);
+          fdn->writable_registered = true;
+        }
+      }
+    }
+  }
+  // Any remaining fds in ev_driver->fds were not returned by ares_getsock() and
+  // are therefore no longer in use, so they can be shut down and removed from
+  // the list.
+  while (ev_driver->fds != nullptr) {
+    fd_node* cur = ev_driver->fds;
+    ev_driver->fds = ev_driver->fds->next;
+    fd_node_shutdown_locked(cur, "c-ares fd shutdown");
+    if (!cur->readable_registered && !cur->writable_registered) {
+      fd_node_destroy_locked(cur);
+    } else {
+      cur->next = new_list;
+      new_list = cur;
+    }
+  }
+  ev_driver->fds = new_list;
+  // If the ev driver has no working fd, all the tasks are done.
+  if (new_list == nullptr) {
+    ev_driver->working = false;
+    GRPC_CARES_TRACE_LOG("request:%p ev driver stop working",
+                         ev_driver->request);
+  }
+}
+
+void grpc_ares_ev_driver_start_locked(grpc_ares_ev_driver* ev_driver) {
+  if (!ev_driver->working) {
+    ev_driver->working = true;
+    grpc_ares_notify_on_event_locked(ev_driver);
+    // Initialize overall DNS resolution timeout alarm
+    grpc_millis timeout =
+        ev_driver->query_timeout_ms == 0
+            ? GRPC_MILLIS_INF_FUTURE
+            : ev_driver->query_timeout_ms + grpc_core::ExecCtx::Get()->Now();
+    GRPC_CARES_TRACE_LOG(
+        "request:%p ev_driver=%p grpc_ares_ev_driver_start_locked. timeout in "
+        "%" PRId64 " ms",
+        ev_driver->request, ev_driver, timeout);
+    grpc_ares_ev_driver_ref(ev_driver);
+    GRPC_CLOSURE_INIT(&ev_driver->on_timeout_locked, on_timeout, ev_driver,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&ev_driver->query_timeout, timeout,
+                    &ev_driver->on_timeout_locked);
+    // Initialize the backup poll alarm
+    grpc_millis next_ares_backup_poll_alarm =
+        calculate_next_ares_backup_poll_alarm_ms(ev_driver);
+    grpc_ares_ev_driver_ref(ev_driver);
+    GRPC_CLOSURE_INIT(&ev_driver->on_ares_backup_poll_alarm_locked,
+                      on_ares_backup_poll_alarm, ev_driver,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&ev_driver->ares_backup_poll_alarm,
+                    next_ares_backup_poll_alarm,
+                    &ev_driver->on_ares_backup_poll_alarm_locked);
+  }
+}
+
+#endif /* GRPC_ARES == 1 */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h
new file mode 100644
index 0000000..1a5a3f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <ares.h>
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+typedef struct grpc_ares_ev_driver grpc_ares_ev_driver;
+
+/* Start \a ev_driver. It will keep working until all IO on its ares_channel is
+   done, or grpc_ares_ev_driver_destroy() is called. It may notify the callbacks
+   bound to its ares_channel when necessary. */
+void grpc_ares_ev_driver_start_locked(grpc_ares_ev_driver* ev_driver);
+
+/* Returns the ares_channel owned by \a ev_driver. To bind a c-ares query to
+   \a ev_driver, use the ares_channel owned by \a ev_driver as the arg of the
+   query. */
+ares_channel* grpc_ares_ev_driver_get_channel_locked(
+    grpc_ares_ev_driver* ev_driver);
+
+/* Creates a new grpc_ares_ev_driver. Returns GRPC_ERROR_NONE if \a ev_driver is
+   created successfully. */
+grpc_error* grpc_ares_ev_driver_create_locked(grpc_ares_ev_driver** ev_driver,
+                                              grpc_pollset_set* pollset_set,
+                                              int query_timeout_ms,
+                                              grpc_core::Combiner* combiner,
+                                              grpc_ares_request* request);
+
+/* Called back when all DNS lookups have completed. */
+void grpc_ares_ev_driver_on_queries_complete_locked(
+    grpc_ares_ev_driver* ev_driver);
+
+/* Shutdown all the grpc_fds used by \a ev_driver */
+void grpc_ares_ev_driver_shutdown_locked(grpc_ares_ev_driver* ev_driver);
+
+/* Exposed in this header for C-core tests only */
+extern void (*grpc_ares_test_only_inject_config)(ares_channel channel);
+
+namespace grpc_core {
+
+/* A wrapped fd that integrates with the grpc iomgr of the current platform.
+ * A GrpcPolledFd knows how to create grpc platform-specific iomgr endpoints
+ * from "ares_socket_t" sockets, and then sign up for readability/writeability
+ * with that poller, and do shutdown and destruction. */
+class GrpcPolledFd {
+ public:
+  virtual ~GrpcPolledFd() {}
+  /* Called when c-ares library is interested and there's no pending callback */
+  virtual void RegisterForOnReadableLocked(grpc_closure* read_closure) = 0;
+  /* Called when c-ares library is interested and there's no pending callback */
+  virtual void RegisterForOnWriteableLocked(grpc_closure* write_closure) = 0;
+  /* Indicates if there is data left even after just being read from */
+  virtual bool IsFdStillReadableLocked() = 0;
+  /* Called once and only once. Must cause cancellation of any pending
+   * read/write callbacks. */
+  virtual void ShutdownLocked(grpc_error* error) = 0;
+  /* Get the underlying ares_socket_t that this was created from */
+  virtual ares_socket_t GetWrappedAresSocketLocked() = 0;
+  /* A unique name, for logging */
+  virtual const char* GetName() = 0;
+};
+
+/* A GrpcPolledFdFactory is 1-to-1 with and owned by the
+ * ares event driver. It knows how to create GrpcPolledFd's
+ * for the current platform, and the ares driver uses it for all of
+ * its fd's. */
+class GrpcPolledFdFactory {
+ public:
+  virtual ~GrpcPolledFdFactory() {}
+  /* Creates a new wrapped fd for the current platform */
+  virtual GrpcPolledFd* NewGrpcPolledFdLocked(
+      ares_socket_t as, grpc_pollset_set* driver_pollset_set,
+      Combiner* combiner) = 0;
+  /* Optionally configures the ares channel after creation */
+  virtual void ConfigureAresChannelLocked(ares_channel channel) = 0;
+};
+
+std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(Combiner* combiner);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_libuv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_libuv.cc
new file mode 100644
index 0000000..37bb903
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_libuv.cc	
@@ -0,0 +1,181 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_UV)
+
+#include <ares.h>
+#include <uv.h>
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+namespace grpc_core {
+
+void ares_uv_poll_cb(uv_poll_t* handle, int status, int events);
+
+void ares_uv_poll_close_cb(uv_handle_t* handle) { delete handle; }
+
+class GrpcPolledFdLibuv : public GrpcPolledFd {
+ public:
+  GrpcPolledFdLibuv(ares_socket_t as, Combiner* combiner)
+      : as_(as), combiner_(combiner) {
+    gpr_asprintf(&name_, "c-ares socket: %" PRIdPTR, (intptr_t)as);
+    handle_ = new uv_poll_t();
+    uv_poll_init_socket(uv_default_loop(), handle_, as);
+    handle_->data = this;
+    GRPC_COMBINER_REF(combiner_, "libuv ares event driver");
+  }
+
+  ~GrpcPolledFdLibuv() {
+    gpr_free(name_);
+    GRPC_COMBINER_UNREF(combiner_, "libuv ares event driver");
+  }
+
+  void RegisterForOnReadableLocked(grpc_closure* read_closure) override {
+    GPR_ASSERT(read_closure_ == nullptr);
+    GPR_ASSERT((poll_events_ & UV_READABLE) == 0);
+    read_closure_ = read_closure;
+    poll_events_ |= UV_READABLE;
+    uv_poll_start(handle_, poll_events_, ares_uv_poll_cb);
+  }
+
+  void RegisterForOnWriteableLocked(grpc_closure* write_closure) override {
+    GPR_ASSERT(write_closure_ == nullptr);
+    GPR_ASSERT((poll_events_ & UV_WRITABLE) == 0);
+    write_closure_ = write_closure;
+    poll_events_ |= UV_WRITABLE;
+    uv_poll_start(handle_, poll_events_, ares_uv_poll_cb);
+  }
+
+  bool IsFdStillReadableLocked() override {
+    /* uv_poll_t is based on poll, which is level triggered. So, if cares
+     * leaves some data unread, the event will trigger again. */
+    return false;
+  }
+
+  void ShutdownInternalLocked(grpc_error* error) {
+    uv_poll_stop(handle_);
+    uv_close(reinterpret_cast<uv_handle_t*>(handle_), ares_uv_poll_close_cb);
+    if (read_closure_ != nullptr) {
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, read_closure_,
+                              GRPC_ERROR_CANCELLED);
+    }
+    if (write_closure_ != nullptr) {
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, write_closure_,
+                              GRPC_ERROR_CANCELLED);
+    }
+  }
+
+  void ShutdownLocked(grpc_error* error) override {
+    if (grpc_core::ExecCtx::Get() == nullptr) {
+      grpc_core::ExecCtx exec_ctx;
+      ShutdownInternalLocked(error);
+    } else {
+      ShutdownInternalLocked(error);
+    }
+  }
+
+  ares_socket_t GetWrappedAresSocketLocked() override { return as_; }
+
+  const char* GetName() override { return name_; }
+
+  char* name_;
+  ares_socket_t as_;
+  uv_poll_t* handle_;
+  grpc_closure* read_closure_ = nullptr;
+  grpc_closure* write_closure_ = nullptr;
+  int poll_events_ = 0;
+  Combiner* combiner_;
+};
+
+struct AresUvPollCbArg {
+  AresUvPollCbArg(uv_poll_t* handle, int status, int events)
+      : handle(handle), status(status), events(events) {}
+
+  uv_poll_t* handle;
+  int status;
+  int events;
+};
+
+static void ares_uv_poll_cb_locked(void* arg, grpc_error* error) {
+  std::unique_ptr<AresUvPollCbArg> arg_struct(
+      reinterpret_cast<AresUvPollCbArg*>(arg));
+  uv_poll_t* handle = arg_struct->handle;
+  int status = arg_struct->status;
+  int events = arg_struct->events;
+  GrpcPolledFdLibuv* polled_fd =
+      reinterpret_cast<GrpcPolledFdLibuv*>(handle->data);
+  if (status < 0) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("cares polling error");
+    error =
+        grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
+                           grpc_slice_from_static_string(uv_strerror(status)));
+  }
+  if (events & UV_READABLE) {
+    GPR_ASSERT(polled_fd->read_closure_ != nullptr);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, polled_fd->read_closure_, error);
+    polled_fd->read_closure_ = nullptr;
+    polled_fd->poll_events_ &= ~UV_READABLE;
+  }
+  if (events & UV_WRITABLE) {
+    GPR_ASSERT(polled_fd->write_closure_ != nullptr);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, polled_fd->write_closure_, error);
+    polled_fd->write_closure_ = nullptr;
+    polled_fd->poll_events_ &= ~UV_WRITABLE;
+  }
+  uv_poll_start(handle, polled_fd->poll_events_, ares_uv_poll_cb);
+}
+
+void ares_uv_poll_cb(uv_poll_t* handle, int status, int events) {
+  grpc_core::ExecCtx exec_ctx;
+  GrpcPolledFdLibuv* polled_fd =
+      reinterpret_cast<GrpcPolledFdLibuv*>(handle->data);
+  AresUvPollCbArg* arg = new AresUvPollCbArg(handle, status, events);
+  polled_fd->combiner_->Run(
+      GRPC_CLOSURE_CREATE(ares_uv_poll_cb_locked, arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+class GrpcPolledFdFactoryLibuv : public GrpcPolledFdFactory {
+ public:
+  GrpcPolledFd* NewGrpcPolledFdLocked(ares_socket_t as,
+                                      grpc_pollset_set* driver_pollset_set,
+                                      Combiner* combiner) override {
+    return new GrpcPolledFdLibuv(as, combiner);
+  }
+
+  void ConfigureAresChannelLocked(ares_channel channel) override {}
+};
+
+std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(
+    Combiner* combiner) {
+  return absl::make_unique<GrpcPolledFdFactoryLibuv>();
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_UV) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc
new file mode 100644
index 0000000..0b571a2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc	
@@ -0,0 +1,107 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET_ARES_EV_DRIVER)
+
+#include <ares.h>
+#include <string.h>
+#include <sys/ioctl.h>
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+namespace grpc_core {
+
+class GrpcPolledFdPosix : public GrpcPolledFd {
+ public:
+  GrpcPolledFdPosix(ares_socket_t as, grpc_pollset_set* driver_pollset_set)
+      : as_(as) {
+    gpr_asprintf(&name_, "c-ares fd: %d", (int)as);
+    fd_ = grpc_fd_create((int)as, name_, false);
+    driver_pollset_set_ = driver_pollset_set;
+    grpc_pollset_set_add_fd(driver_pollset_set_, fd_);
+  }
+
+  ~GrpcPolledFdPosix() {
+    gpr_free(name_);
+    grpc_pollset_set_del_fd(driver_pollset_set_, fd_);
+    /* c-ares library will close the fd inside grpc_fd. This fd may be picked up
+       immediately by another thread, and should not be closed by the following
+       grpc_fd_orphan. */
+    int dummy_release_fd;
+    grpc_fd_orphan(fd_, nullptr, &dummy_release_fd, "c-ares query finished");
+  }
+
+  void RegisterForOnReadableLocked(grpc_closure* read_closure) override {
+    grpc_fd_notify_on_read(fd_, read_closure);
+  }
+
+  void RegisterForOnWriteableLocked(grpc_closure* write_closure) override {
+    grpc_fd_notify_on_write(fd_, write_closure);
+  }
+
+  bool IsFdStillReadableLocked() override {
+    size_t bytes_available = 0;
+    return ioctl(grpc_fd_wrapped_fd(fd_), FIONREAD, &bytes_available) == 0 &&
+           bytes_available > 0;
+  }
+
+  void ShutdownLocked(grpc_error* error) override {
+    grpc_fd_shutdown(fd_, error);
+  }
+
+  ares_socket_t GetWrappedAresSocketLocked() override { return as_; }
+
+  const char* GetName() override { return name_; }
+
+  char* name_;
+  ares_socket_t as_;
+  grpc_fd* fd_;
+  grpc_pollset_set* driver_pollset_set_;
+};
+
+class GrpcPolledFdFactoryPosix : public GrpcPolledFdFactory {
+ public:
+  GrpcPolledFd* NewGrpcPolledFdLocked(ares_socket_t as,
+                                      grpc_pollset_set* driver_pollset_set,
+                                      Combiner* /*combiner*/) override {
+    return new GrpcPolledFdPosix(as, driver_pollset_set);
+  }
+
+  void ConfigureAresChannelLocked(ares_channel /*channel*/) override {}
+};
+
+std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(
+    Combiner* /*combiner*/) {
+  return absl::make_unique<GrpcPolledFdFactoryPosix>();
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET_ARES_EV_DRIVER) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_windows.cc
new file mode 100644
index 0000000..0742c97
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_windows.cc	
@@ -0,0 +1,942 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_WINDOWS_SOCKET_ARES_EV_DRIVER)
+
+#include <ares.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <string.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+
+/* TODO(apolcyn): remove this hack after fixing upstream.
+ * Our grpc/c-ares code on Windows uses the ares_set_socket_functions API,
+ * which uses "struct iovec" type, which on Windows is defined inside of
+ * a c-ares header that is not public.
+ * See https://github.com/c-ares/c-ares/issues/206. */
+struct iovec {
+  void* iov_base;
+  size_t iov_len;
+};
+
+namespace grpc_core {
+
+/* c-ares reads and takes action on the error codes of the
+ * "virtual socket operations" in this file, via the WSAGetLastError
+ * APIs. If code in this file wants to set a specific WSA error that
+ * c-ares should read, it must do so by calling SetWSAError() on the
+ * WSAErrorContext instance passed to it. A WSAErrorContext must only be
+ * instantiated at the top of the virtual socket function callstack. */
+class WSAErrorContext {
+ public:
+  explicit WSAErrorContext(){};
+
+  ~WSAErrorContext() {
+    if (error_ != 0) {
+      WSASetLastError(error_);
+    }
+  }
+
+  /* Disallow copy and assignment operators */
+  WSAErrorContext(const WSAErrorContext&) = delete;
+  WSAErrorContext& operator=(const WSAErrorContext&) = delete;
+
+  void SetWSAError(int error) { error_ = error; }
+
+ private:
+  int error_ = 0;
+};
+
+/* c-ares creates its own sockets and is meant to read them when readable and
+ * write them when writeable. To fit this socket usage model into the grpc
+ * windows poller (which gives notifications when attempted reads and writes are
+ * actually fulfilled rather than possible), this GrpcPolledFdWindows class
+ * takes advantage of the ares_set_socket_functions API and acts as a virtual
+ * socket. It holds its own read and write buffers which are written to and read
+ * from c-ares and are used with the grpc windows poller, and it, e.g.,
+ * manufactures virtual socket error codes when it e.g. needs to tell the c-ares
+ * library to wait for an async read. */
+class GrpcPolledFdWindows {
+ public:
+  enum WriteState {
+    WRITE_IDLE,
+    WRITE_REQUESTED,
+    WRITE_PENDING,
+    WRITE_WAITING_FOR_VERIFICATION_UPON_RETRY,
+  };
+
+  GrpcPolledFdWindows(ares_socket_t as, Combiner* combiner, int address_family,
+                      int socket_type)
+      : read_buf_(grpc_empty_slice()),
+        write_buf_(grpc_empty_slice()),
+        tcp_write_state_(WRITE_IDLE),
+        gotten_into_driver_list_(false),
+        address_family_(address_family),
+        socket_type_(socket_type) {
+    gpr_asprintf(&name_, "c-ares socket: %" PRIdPTR, as);
+    winsocket_ = grpc_winsocket_create(as, name_);
+    combiner_ = GRPC_COMBINER_REF(combiner, name_);
+    GRPC_CLOSURE_INIT(&continue_register_for_on_readable_locked_,
+                      &GrpcPolledFdWindows::ContinueRegisterForOnReadableLocked,
+                      this, nullptr);
+    GRPC_CLOSURE_INIT(
+        &continue_register_for_on_writeable_locked_,
+        &GrpcPolledFdWindows::ContinueRegisterForOnWriteableLocked, this,
+        nullptr);
+  }
+
+  ~GrpcPolledFdWindows() {
+    GRPC_COMBINER_UNREF(combiner_, name_);
+    grpc_slice_unref_internal(read_buf_);
+    grpc_slice_unref_internal(write_buf_);
+    GPR_ASSERT(read_closure_ == nullptr);
+    GPR_ASSERT(write_closure_ == nullptr);
+    grpc_winsocket_destroy(winsocket_);
+    gpr_free(name_);
+  }
+
+  void ScheduleAndNullReadClosure(grpc_error* error) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, read_closure_, error);
+    read_closure_ = nullptr;
+  }
+
+  void ScheduleAndNullWriteClosure(grpc_error* error) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, write_closure_, error);
+    write_closure_ = nullptr;
+  }
+
+  void RegisterForOnReadableLocked(grpc_closure* read_closure) {
+    GPR_ASSERT(read_closure_ == nullptr);
+    read_closure_ = read_closure;
+    GPR_ASSERT(GRPC_SLICE_LENGTH(read_buf_) == 0);
+    grpc_slice_unref_internal(read_buf_);
+    GPR_ASSERT(!read_buf_has_data_);
+    read_buf_ = GRPC_SLICE_MALLOC(4192);
+    if (connect_done_) {
+      combiner_->Run(&continue_register_for_on_readable_locked_,
+                     GRPC_ERROR_NONE);
+    } else {
+      GPR_ASSERT(pending_continue_register_for_on_readable_locked_ == nullptr);
+      pending_continue_register_for_on_readable_locked_ =
+          &continue_register_for_on_readable_locked_;
+    }
+  }
+
+  static void ContinueRegisterForOnReadableLocked(void* arg,
+                                                  grpc_error* unused_error) {
+    GrpcPolledFdWindows* grpc_polled_fd =
+        static_cast<GrpcPolledFdWindows*>(arg);
+    grpc_polled_fd->InnerContinueRegisterForOnReadableLocked(GRPC_ERROR_NONE);
+  }
+
+  void InnerContinueRegisterForOnReadableLocked(grpc_error* unused_error) {
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| InnerContinueRegisterForOnReadableLocked "
+        "wsa_connect_error_:%d",
+        GetName(), wsa_connect_error_);
+    GPR_ASSERT(connect_done_);
+    if (wsa_connect_error_ != 0) {
+      ScheduleAndNullReadClosure(GRPC_WSA_ERROR(wsa_connect_error_, "connect"));
+      return;
+    }
+    WSABUF buffer;
+    buffer.buf = (char*)GRPC_SLICE_START_PTR(read_buf_);
+    buffer.len = GRPC_SLICE_LENGTH(read_buf_);
+    memset(&winsocket_->read_info.overlapped, 0, sizeof(OVERLAPPED));
+    recv_from_source_addr_len_ = sizeof(recv_from_source_addr_);
+    DWORD flags = 0;
+    if (WSARecvFrom(grpc_winsocket_wrapped_socket(winsocket_), &buffer, 1,
+                    nullptr, &flags, (sockaddr*)recv_from_source_addr_,
+                    &recv_from_source_addr_len_,
+                    &winsocket_->read_info.overlapped, nullptr)) {
+      int wsa_last_error = WSAGetLastError();
+      char* msg = gpr_format_message(wsa_last_error);
+      GRPC_CARES_TRACE_LOG(
+          "fd:|%s| RegisterForOnReadableLocked WSARecvFrom error code:|%d| "
+          "msg:|%s|",
+          GetName(), wsa_last_error, msg);
+      gpr_free(msg);
+      if (wsa_last_error != WSA_IO_PENDING) {
+        ScheduleAndNullReadClosure(
+            GRPC_WSA_ERROR(wsa_last_error, "WSARecvFrom"));
+        return;
+      }
+    }
+    grpc_socket_notify_on_read(
+        winsocket_, GRPC_CLOSURE_INIT(&outer_read_closure_,
+                                      &GrpcPolledFdWindows::OnIocpReadable,
+                                      this, grpc_schedule_on_exec_ctx));
+  }
+
+  void RegisterForOnWriteableLocked(grpc_closure* write_closure) {
+    if (socket_type_ == SOCK_DGRAM) {
+      GRPC_CARES_TRACE_LOG("fd:|%s| RegisterForOnWriteableLocked called",
+                           GetName());
+    } else {
+      GPR_ASSERT(socket_type_ == SOCK_STREAM);
+      GRPC_CARES_TRACE_LOG(
+          "fd:|%s| RegisterForOnWriteableLocked called tcp_write_state_: %d",
+          GetName(), tcp_write_state_);
+    }
+    GPR_ASSERT(write_closure_ == nullptr);
+    write_closure_ = write_closure;
+    if (connect_done_) {
+      combiner_->Run(&continue_register_for_on_writeable_locked_,
+                     GRPC_ERROR_NONE);
+    } else {
+      GPR_ASSERT(pending_continue_register_for_on_writeable_locked_ == nullptr);
+      pending_continue_register_for_on_writeable_locked_ =
+          &continue_register_for_on_writeable_locked_;
+    }
+  }
+
+  static void ContinueRegisterForOnWriteableLocked(void* arg,
+                                                   grpc_error* unused_error) {
+    GrpcPolledFdWindows* grpc_polled_fd =
+        static_cast<GrpcPolledFdWindows*>(arg);
+    grpc_polled_fd->InnerContinueRegisterForOnWriteableLocked(GRPC_ERROR_NONE);
+  }
+
+  void InnerContinueRegisterForOnWriteableLocked(grpc_error* unused_error) {
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| InnerContinueRegisterForOnWriteableLocked "
+        "wsa_connect_error_:%d",
+        GetName(), wsa_connect_error_);
+    GPR_ASSERT(connect_done_);
+    if (wsa_connect_error_ != 0) {
+      ScheduleAndNullWriteClosure(
+          GRPC_WSA_ERROR(wsa_connect_error_, "connect"));
+      return;
+    }
+    if (socket_type_ == SOCK_DGRAM) {
+      ScheduleAndNullWriteClosure(GRPC_ERROR_NONE);
+    } else {
+      GPR_ASSERT(socket_type_ == SOCK_STREAM);
+      int wsa_error_code = 0;
+      switch (tcp_write_state_) {
+        case WRITE_IDLE:
+          ScheduleAndNullWriteClosure(GRPC_ERROR_NONE);
+          break;
+        case WRITE_REQUESTED:
+          tcp_write_state_ = WRITE_PENDING;
+          if (SendWriteBuf(nullptr, &winsocket_->write_info.overlapped,
+                           &wsa_error_code) != 0) {
+            ScheduleAndNullWriteClosure(
+                GRPC_WSA_ERROR(wsa_error_code, "WSASend (overlapped)"));
+          } else {
+            grpc_socket_notify_on_write(
+                winsocket_,
+                GRPC_CLOSURE_INIT(&outer_write_closure_,
+                                  &GrpcPolledFdWindows::OnIocpWriteable, this,
+                                  grpc_schedule_on_exec_ctx));
+          }
+          break;
+        case WRITE_PENDING:
+        case WRITE_WAITING_FOR_VERIFICATION_UPON_RETRY:
+          abort();
+      }
+    }
+  }
+
+  bool IsFdStillReadableLocked() { return GRPC_SLICE_LENGTH(read_buf_) > 0; }
+
+  void ShutdownLocked(grpc_error* error) {
+    grpc_winsocket_shutdown(winsocket_);
+  }
+
+  ares_socket_t GetWrappedAresSocketLocked() {
+    return grpc_winsocket_wrapped_socket(winsocket_);
+  }
+
+  const char* GetName() { return name_; }
+
+  ares_ssize_t RecvFrom(WSAErrorContext* wsa_error_ctx, void* data,
+                        ares_socket_t data_len, int flags,
+                        struct sockaddr* from, ares_socklen_t* from_len) {
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| RecvFrom called read_buf_has_data:%d Current read buf "
+        "length:|%d|",
+        GetName(), read_buf_has_data_, GRPC_SLICE_LENGTH(read_buf_));
+    if (!read_buf_has_data_) {
+      wsa_error_ctx->SetWSAError(WSAEWOULDBLOCK);
+      return -1;
+    }
+    ares_ssize_t bytes_read = 0;
+    for (size_t i = 0; i < GRPC_SLICE_LENGTH(read_buf_) && i < data_len; i++) {
+      ((char*)data)[i] = GRPC_SLICE_START_PTR(read_buf_)[i];
+      bytes_read++;
+    }
+    read_buf_ = grpc_slice_sub_no_ref(read_buf_, bytes_read,
+                                      GRPC_SLICE_LENGTH(read_buf_));
+    if (GRPC_SLICE_LENGTH(read_buf_) == 0) {
+      read_buf_has_data_ = false;
+    }
+    /* c-ares overloads this recv_from virtual socket function to receive
+     * data on both UDP and TCP sockets, and from is nullptr for TCP. */
+    if (from != nullptr) {
+      GPR_ASSERT(*from_len <= recv_from_source_addr_len_);
+      memcpy(from, &recv_from_source_addr_, recv_from_source_addr_len_);
+      *from_len = recv_from_source_addr_len_;
+    }
+    return bytes_read;
+  }
+
+  grpc_slice FlattenIovec(const struct iovec* iov, int iov_count) {
+    int total = 0;
+    for (int i = 0; i < iov_count; i++) {
+      total += iov[i].iov_len;
+    }
+    grpc_slice out = GRPC_SLICE_MALLOC(total);
+    size_t cur = 0;
+    for (int i = 0; i < iov_count; i++) {
+      for (int k = 0; k < iov[i].iov_len; k++) {
+        GRPC_SLICE_START_PTR(out)[cur++] = ((char*)iov[i].iov_base)[k];
+      }
+    }
+    return out;
+  }
+
+  int SendWriteBuf(LPDWORD bytes_sent_ptr, LPWSAOVERLAPPED overlapped,
+                   int* wsa_error_code) {
+    WSABUF buf;
+    buf.len = GRPC_SLICE_LENGTH(write_buf_);
+    buf.buf = (char*)GRPC_SLICE_START_PTR(write_buf_);
+    DWORD flags = 0;
+    int out = WSASend(grpc_winsocket_wrapped_socket(winsocket_), &buf, 1,
+                      bytes_sent_ptr, flags, overlapped, nullptr);
+    *wsa_error_code = WSAGetLastError();
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| SendWriteBuf WSASend buf.len:%d *bytes_sent_ptr:%d "
+        "overlapped:%p "
+        "return:%d *wsa_error_code:%d",
+        GetName(), buf.len, bytes_sent_ptr != nullptr ? *bytes_sent_ptr : 0,
+        overlapped, out, *wsa_error_code);
+    return out;
+  }
+
+  ares_ssize_t SendV(WSAErrorContext* wsa_error_ctx, const struct iovec* iov,
+                     int iov_count) {
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| SendV called connect_done_:%d wsa_connect_error_:%d",
+        GetName(), connect_done_, wsa_connect_error_);
+    if (!connect_done_) {
+      wsa_error_ctx->SetWSAError(WSAEWOULDBLOCK);
+      return -1;
+    }
+    if (wsa_connect_error_ != 0) {
+      wsa_error_ctx->SetWSAError(wsa_connect_error_);
+      return -1;
+    }
+    switch (socket_type_) {
+      case SOCK_DGRAM:
+        return SendVUDP(wsa_error_ctx, iov, iov_count);
+      case SOCK_STREAM:
+        return SendVTCP(wsa_error_ctx, iov, iov_count);
+      default:
+        abort();
+    }
+  }
+
+  ares_ssize_t SendVUDP(WSAErrorContext* wsa_error_ctx, const struct iovec* iov,
+                        int iov_count) {
+    // c-ares doesn't handle retryable errors on writes of UDP sockets.
+    // Therefore, the sendv handler for UDP sockets must only attempt
+    // to write everything inline.
+    GRPC_CARES_TRACE_LOG("fd:|%s| SendVUDP called", GetName());
+    GPR_ASSERT(GRPC_SLICE_LENGTH(write_buf_) == 0);
+    grpc_slice_unref_internal(write_buf_);
+    write_buf_ = FlattenIovec(iov, iov_count);
+    DWORD bytes_sent = 0;
+    int wsa_error_code = 0;
+    if (SendWriteBuf(&bytes_sent, nullptr, &wsa_error_code) != 0) {
+      wsa_error_ctx->SetWSAError(wsa_error_code);
+      char* msg = gpr_format_message(wsa_error_code);
+      GRPC_CARES_TRACE_LOG(
+          "fd:|%s| SendVUDP SendWriteBuf error code:%d msg:|%s|", GetName(),
+          wsa_error_code, msg);
+      gpr_free(msg);
+      return -1;
+    }
+    write_buf_ = grpc_slice_sub_no_ref(write_buf_, bytes_sent,
+                                       GRPC_SLICE_LENGTH(write_buf_));
+    return bytes_sent;
+  }
+
+  ares_ssize_t SendVTCP(WSAErrorContext* wsa_error_ctx, const struct iovec* iov,
+                        int iov_count) {
+    // The "sendv" handler on TCP sockets buffers up write
+    // requests and returns an artificial WSAEWOULDBLOCK. Writing that buffer
+    // out in the background, and making further send progress in general, will
+    // happen as long as c-ares continues to show interest in writeability on
+    // this fd.
+    GRPC_CARES_TRACE_LOG("fd:|%s| SendVTCP called tcp_write_state_:%d",
+                         GetName(), tcp_write_state_);
+    switch (tcp_write_state_) {
+      case WRITE_IDLE:
+        tcp_write_state_ = WRITE_REQUESTED;
+        GPR_ASSERT(GRPC_SLICE_LENGTH(write_buf_) == 0);
+        grpc_slice_unref_internal(write_buf_);
+        write_buf_ = FlattenIovec(iov, iov_count);
+        wsa_error_ctx->SetWSAError(WSAEWOULDBLOCK);
+        return -1;
+      case WRITE_REQUESTED:
+      case WRITE_PENDING:
+        wsa_error_ctx->SetWSAError(WSAEWOULDBLOCK);
+        return -1;
+      case WRITE_WAITING_FOR_VERIFICATION_UPON_RETRY:
+        // c-ares is retrying a send on data that we previously returned
+        // WSAEWOULDBLOCK for, but then subsequently wrote out in the
+        // background. Right now, we assume that c-ares is retrying the same
+        // send again. If c-ares still needs to send even more data, we'll get
+        // to it eventually.
+        grpc_slice currently_attempted = FlattenIovec(iov, iov_count);
+        GPR_ASSERT(GRPC_SLICE_LENGTH(currently_attempted) >=
+                   GRPC_SLICE_LENGTH(write_buf_));
+        ares_ssize_t total_sent = 0;
+        for (size_t i = 0; i < GRPC_SLICE_LENGTH(write_buf_); i++) {
+          GPR_ASSERT(GRPC_SLICE_START_PTR(currently_attempted)[i] ==
+                     GRPC_SLICE_START_PTR(write_buf_)[i]);
+          total_sent++;
+        }
+        grpc_slice_unref_internal(currently_attempted);
+        tcp_write_state_ = WRITE_IDLE;
+        return total_sent;
+    }
+    abort();
+  }
+
+  static void OnTcpConnect(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* grpc_polled_fd =
+        static_cast<GrpcPolledFdWindows*>(arg);
+    grpc_polled_fd->combiner_->Run(
+        GRPC_CLOSURE_INIT(&grpc_polled_fd->on_tcp_connect_locked_,
+                          &GrpcPolledFdWindows::OnTcpConnectLocked,
+                          grpc_polled_fd, nullptr),
+        GRPC_ERROR_REF(error));
+  }
+
+  static void OnTcpConnectLocked(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* grpc_polled_fd =
+        static_cast<GrpcPolledFdWindows*>(arg);
+    grpc_polled_fd->InnerOnTcpConnectLocked(error);
+  }
+
+  void InnerOnTcpConnectLocked(grpc_error* error) {
+    GRPC_CARES_TRACE_LOG(
+        "fd:%s InnerOnTcpConnectLocked error:|%s| "
+        "pending_register_for_readable:%" PRIdPTR
+        " pending_register_for_writeable:%" PRIdPTR,
+        GetName(), grpc_error_string(error),
+        pending_continue_register_for_on_readable_locked_,
+        pending_continue_register_for_on_writeable_locked_);
+    GPR_ASSERT(!connect_done_);
+    connect_done_ = true;
+    GPR_ASSERT(wsa_connect_error_ == 0);
+    if (error == GRPC_ERROR_NONE) {
+      DWORD transferred_bytes = 0;
+      DWORD flags;
+      BOOL wsa_success =
+          WSAGetOverlappedResult(grpc_winsocket_wrapped_socket(winsocket_),
+                                 &winsocket_->write_info.overlapped,
+                                 &transferred_bytes, FALSE, &flags);
+      GPR_ASSERT(transferred_bytes == 0);
+      if (!wsa_success) {
+        wsa_connect_error_ = WSAGetLastError();
+        char* msg = gpr_format_message(wsa_connect_error_);
+        GRPC_CARES_TRACE_LOG(
+            "fd:%s InnerOnTcpConnectLocked WSA overlapped result code:%d "
+            "msg:|%s|",
+            GetName(), wsa_connect_error_, msg);
+        gpr_free(msg);
+      }
+    } else {
+      // Spoof up an error code that will cause any future c-ares operations on
+      // this fd to abort.
+      wsa_connect_error_ = WSA_OPERATION_ABORTED;
+    }
+    if (pending_continue_register_for_on_readable_locked_ != nullptr) {
+      combiner_->Run(pending_continue_register_for_on_readable_locked_,
+                     GRPC_ERROR_NONE);
+    }
+    if (pending_continue_register_for_on_writeable_locked_ != nullptr) {
+      combiner_->Run(pending_continue_register_for_on_writeable_locked_,
+                     GRPC_ERROR_NONE);
+    }
+  }
+
+  int Connect(WSAErrorContext* wsa_error_ctx, const struct sockaddr* target,
+              ares_socklen_t target_len) {
+    switch (socket_type_) {
+      case SOCK_DGRAM:
+        return ConnectUDP(wsa_error_ctx, target, target_len);
+      case SOCK_STREAM:
+        return ConnectTCP(wsa_error_ctx, target, target_len);
+      default:
+        abort();
+    }
+  }
+
+  int ConnectUDP(WSAErrorContext* wsa_error_ctx, const struct sockaddr* target,
+                 ares_socklen_t target_len) {
+    GRPC_CARES_TRACE_LOG("fd:%s ConnectUDP", GetName());
+    GPR_ASSERT(!connect_done_);
+    GPR_ASSERT(wsa_connect_error_ == 0);
+    SOCKET s = grpc_winsocket_wrapped_socket(winsocket_);
+    int out =
+        WSAConnect(s, target, target_len, nullptr, nullptr, nullptr, nullptr);
+    wsa_connect_error_ = WSAGetLastError();
+    wsa_error_ctx->SetWSAError(wsa_connect_error_);
+    connect_done_ = true;
+    char* msg = gpr_format_message(wsa_connect_error_);
+    GRPC_CARES_TRACE_LOG("fd:%s WSAConnect error code:|%d| msg:|%s|", GetName(),
+                         wsa_connect_error_, msg);
+    gpr_free(msg);
+    // c-ares expects a posix-style connect API
+    return out == 0 ? 0 : -1;
+  }
+
+  int ConnectTCP(WSAErrorContext* wsa_error_ctx, const struct sockaddr* target,
+                 ares_socklen_t target_len) {
+    GRPC_CARES_TRACE_LOG("fd:%s ConnectTCP", GetName());
+    LPFN_CONNECTEX ConnectEx;
+    GUID guid = WSAID_CONNECTEX;
+    DWORD ioctl_num_bytes;
+    SOCKET s = grpc_winsocket_wrapped_socket(winsocket_);
+    if (WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid),
+                 &ConnectEx, sizeof(ConnectEx), &ioctl_num_bytes, nullptr,
+                 nullptr) != 0) {
+      int wsa_last_error = WSAGetLastError();
+      wsa_error_ctx->SetWSAError(wsa_last_error);
+      char* msg = gpr_format_message(wsa_last_error);
+      GRPC_CARES_TRACE_LOG(
+          "fd:%s WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER) error code:%d "
+          "msg:|%s|",
+          GetName(), wsa_last_error, msg);
+      gpr_free(msg);
+      connect_done_ = true;
+      wsa_connect_error_ = wsa_last_error;
+      return -1;
+    }
+    grpc_resolved_address wildcard4_addr;
+    grpc_resolved_address wildcard6_addr;
+    grpc_sockaddr_make_wildcards(0, &wildcard4_addr, &wildcard6_addr);
+    grpc_resolved_address* local_address = nullptr;
+    if (address_family_ == AF_INET) {
+      local_address = &wildcard4_addr;
+    } else {
+      local_address = &wildcard6_addr;
+    }
+    if (bind(s, (struct sockaddr*)local_address->addr,
+             (int)local_address->len) != 0) {
+      int wsa_last_error = WSAGetLastError();
+      wsa_error_ctx->SetWSAError(wsa_last_error);
+      char* msg = gpr_format_message(wsa_last_error);
+      GRPC_CARES_TRACE_LOG("fd:%s bind error code:%d msg:|%s|", GetName(),
+                           wsa_last_error, msg);
+      gpr_free(msg);
+      connect_done_ = true;
+      wsa_connect_error_ = wsa_last_error;
+      return -1;
+    }
+    int out = 0;
+    if (ConnectEx(s, target, target_len, nullptr, 0, nullptr,
+                  &winsocket_->write_info.overlapped) == 0) {
+      out = -1;
+      int wsa_last_error = WSAGetLastError();
+      wsa_error_ctx->SetWSAError(wsa_last_error);
+      char* msg = gpr_format_message(wsa_last_error);
+      GRPC_CARES_TRACE_LOG("fd:%s ConnectEx error code:%d msg:|%s|", GetName(),
+                           wsa_last_error, msg);
+      gpr_free(msg);
+      if (wsa_last_error == WSA_IO_PENDING) {
+        // c-ares only understands WSAEINPROGRESS and EWOULDBLOCK error codes on
+        // connect, but an async connect on IOCP socket will give
+        // WSA_IO_PENDING, so we need to convert.
+        wsa_error_ctx->SetWSAError(WSAEWOULDBLOCK);
+      } else {
+        // By returning a non-retryable error to c-ares at this point,
+        // we're aborting the possibility of any future operations on this fd.
+        connect_done_ = true;
+        wsa_connect_error_ = wsa_last_error;
+        return -1;
+      }
+    }
+    GRPC_CLOSURE_INIT(&on_tcp_connect_locked_,
+                      &GrpcPolledFdWindows::OnTcpConnect, this,
+                      grpc_schedule_on_exec_ctx);
+    grpc_socket_notify_on_write(winsocket_, &on_tcp_connect_locked_);
+    return out;
+  }
+
+  static void OnIocpReadable(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* polled_fd = static_cast<GrpcPolledFdWindows*>(arg);
+    polled_fd->combiner_->Run(
+        GRPC_CLOSURE_INIT(&polled_fd->outer_read_closure_,
+                          &GrpcPolledFdWindows::OnIocpReadableLocked, polled_fd,
+                          nullptr),
+        GRPC_ERROR_REF(error));
+  }
+
+  static void OnIocpReadableLocked(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* polled_fd = static_cast<GrpcPolledFdWindows*>(arg);
+    polled_fd->OnIocpReadableInner(error);
+  }
+
+  // TODO(apolcyn): improve this error handling to be less conversative.
+  // An e.g. ECONNRESET error here should result in errors when
+  // c-ares reads from this socket later, but it shouldn't necessarily cancel
+  // the entire resolution attempt. Doing so will allow the "inject broken
+  // nameserver list" test to pass on Windows.
+  void OnIocpReadableInner(grpc_error* error) {
+    if (error == GRPC_ERROR_NONE) {
+      if (winsocket_->read_info.wsa_error != 0) {
+        /* WSAEMSGSIZE would be due to receiving more data
+         * than our read buffer's fixed capacity. Assume that
+         * the connection is TCP and read the leftovers
+         * in subsequent c-ares reads. */
+        if (winsocket_->read_info.wsa_error != WSAEMSGSIZE) {
+          GRPC_ERROR_UNREF(error);
+          error = GRPC_WSA_ERROR(winsocket_->read_info.wsa_error,
+                                 "OnIocpReadableInner");
+          GRPC_CARES_TRACE_LOG(
+              "fd:|%s| OnIocpReadableInner winsocket_->read_info.wsa_error "
+              "code:|%d| msg:|%s|",
+              GetName(), winsocket_->read_info.wsa_error,
+              grpc_error_string(error));
+        }
+      }
+    }
+    if (error == GRPC_ERROR_NONE) {
+      read_buf_ = grpc_slice_sub_no_ref(
+          read_buf_, 0, winsocket_->read_info.bytes_transferred);
+      read_buf_has_data_ = true;
+    } else {
+      grpc_slice_unref_internal(read_buf_);
+      read_buf_ = grpc_empty_slice();
+    }
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| OnIocpReadable finishing. read buf length now:|%d|", GetName(),
+        GRPC_SLICE_LENGTH(read_buf_));
+    ScheduleAndNullReadClosure(error);
+  }
+
+  static void OnIocpWriteable(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* polled_fd = static_cast<GrpcPolledFdWindows*>(arg);
+    polled_fd->combiner_->Run(
+        GRPC_CLOSURE_INIT(&polled_fd->outer_write_closure_,
+                          &GrpcPolledFdWindows::OnIocpWriteableLocked,
+                          polled_fd, nullptr),
+        GRPC_ERROR_REF(error));
+  }
+
+  static void OnIocpWriteableLocked(void* arg, grpc_error* error) {
+    GrpcPolledFdWindows* polled_fd = static_cast<GrpcPolledFdWindows*>(arg);
+    polled_fd->OnIocpWriteableInner(error);
+  }
+
+  void OnIocpWriteableInner(grpc_error* error) {
+    GRPC_CARES_TRACE_LOG("OnIocpWriteableInner. fd:|%s|", GetName());
+    GPR_ASSERT(socket_type_ == SOCK_STREAM);
+    if (error == GRPC_ERROR_NONE) {
+      if (winsocket_->write_info.wsa_error != 0) {
+        GRPC_ERROR_UNREF(error);
+        error = GRPC_WSA_ERROR(winsocket_->write_info.wsa_error,
+                               "OnIocpWriteableInner");
+        GRPC_CARES_TRACE_LOG(
+            "fd:|%s| OnIocpWriteableInner. winsocket_->write_info.wsa_error "
+            "code:|%d| msg:|%s|",
+            GetName(), winsocket_->write_info.wsa_error,
+            grpc_error_string(error));
+      }
+    }
+    GPR_ASSERT(tcp_write_state_ == WRITE_PENDING);
+    if (error == GRPC_ERROR_NONE) {
+      tcp_write_state_ = WRITE_WAITING_FOR_VERIFICATION_UPON_RETRY;
+      write_buf_ = grpc_slice_sub_no_ref(
+          write_buf_, 0, winsocket_->write_info.bytes_transferred);
+      GRPC_CARES_TRACE_LOG("fd:|%s| OnIocpWriteableInner. bytes transferred:%d",
+                           GetName(), winsocket_->write_info.bytes_transferred);
+    } else {
+      grpc_slice_unref_internal(write_buf_);
+      write_buf_ = grpc_empty_slice();
+    }
+    ScheduleAndNullWriteClosure(error);
+  }
+
+  bool gotten_into_driver_list() const { return gotten_into_driver_list_; }
+  void set_gotten_into_driver_list() { gotten_into_driver_list_ = true; }
+
+  Combiner* combiner_;
+  char recv_from_source_addr_[200];
+  ares_socklen_t recv_from_source_addr_len_;
+  grpc_slice read_buf_;
+  bool read_buf_has_data_ = false;
+  grpc_slice write_buf_;
+  grpc_closure* read_closure_ = nullptr;
+  grpc_closure* write_closure_ = nullptr;
+  grpc_closure outer_read_closure_;
+  grpc_closure outer_write_closure_;
+  grpc_winsocket* winsocket_;
+  // tcp_write_state_ is only used on TCP GrpcPolledFds
+  WriteState tcp_write_state_;
+  char* name_ = nullptr;
+  bool gotten_into_driver_list_;
+  int address_family_;
+  int socket_type_;
+  grpc_closure on_tcp_connect_locked_;
+  bool connect_done_ = false;
+  int wsa_connect_error_ = 0;
+  // We don't run register_for_{readable,writeable} logic until
+  // a socket is connected. In the interim, we queue readable/writeable
+  // registrations with the following state.
+  grpc_closure continue_register_for_on_readable_locked_;
+  grpc_closure continue_register_for_on_writeable_locked_;
+  grpc_closure* pending_continue_register_for_on_readable_locked_ = nullptr;
+  grpc_closure* pending_continue_register_for_on_writeable_locked_ = nullptr;
+};
+
+struct SockToPolledFdEntry {
+  SockToPolledFdEntry(SOCKET s, GrpcPolledFdWindows* fd)
+      : socket(s), polled_fd(fd) {}
+  SOCKET socket;
+  GrpcPolledFdWindows* polled_fd;
+  SockToPolledFdEntry* next = nullptr;
+};
+
+/* A SockToPolledFdMap can make ares_socket_t types (SOCKET's on windows)
+ * to GrpcPolledFdWindow's, and is used to find the appropriate
+ * GrpcPolledFdWindows to handle a virtual socket call when c-ares makes that
+ * socket call on the ares_socket_t type. Instances are owned by and one-to-one
+ * with a GrpcPolledFdWindows factory and event driver */
+class SockToPolledFdMap {
+ public:
+  SockToPolledFdMap(Combiner* combiner) {
+    combiner_ = GRPC_COMBINER_REF(combiner, "sock to polled fd map");
+  }
+
+  ~SockToPolledFdMap() {
+    GPR_ASSERT(head_ == nullptr);
+    GRPC_COMBINER_UNREF(combiner_, "sock to polled fd map");
+  }
+
+  void AddNewSocket(SOCKET s, GrpcPolledFdWindows* polled_fd) {
+    SockToPolledFdEntry* new_node = new SockToPolledFdEntry(s, polled_fd);
+    new_node->next = head_;
+    head_ = new_node;
+  }
+
+  GrpcPolledFdWindows* LookupPolledFd(SOCKET s) {
+    for (SockToPolledFdEntry* node = head_; node != nullptr;
+         node = node->next) {
+      if (node->socket == s) {
+        GPR_ASSERT(node->polled_fd != nullptr);
+        return node->polled_fd;
+      }
+    }
+    abort();
+  }
+
+  void RemoveEntry(SOCKET s) {
+    GPR_ASSERT(head_ != nullptr);
+    SockToPolledFdEntry** prev = &head_;
+    for (SockToPolledFdEntry* node = head_; node != nullptr;
+         node = node->next) {
+      if (node->socket == s) {
+        *prev = node->next;
+        delete node;
+        return;
+      }
+      prev = &node->next;
+    }
+    abort();
+  }
+
+  /* These virtual socket functions are called from within the c-ares
+   * library. These methods generally dispatch those socket calls to the
+   * appropriate methods. The virtual "socket" and "close" methods are
+   * special and instead create/add and remove/destroy GrpcPolledFdWindows
+   * objects.
+   */
+  static ares_socket_t Socket(int af, int type, int protocol, void* user_data) {
+    if (type != SOCK_DGRAM && type != SOCK_STREAM) {
+      GRPC_CARES_TRACE_LOG("Socket called with invalid socket type:%d", type);
+      return INVALID_SOCKET;
+    }
+    SockToPolledFdMap* map = static_cast<SockToPolledFdMap*>(user_data);
+    SOCKET s = WSASocket(af, type, protocol, nullptr, 0,
+                         grpc_get_default_wsa_socket_flags());
+    if (s == INVALID_SOCKET) {
+      GRPC_CARES_TRACE_LOG(
+          "WSASocket failed with params af:%d type:%d protocol:%d", af, type,
+          protocol);
+      return s;
+    }
+    grpc_tcp_set_non_block(s);
+    GrpcPolledFdWindows* polled_fd =
+        new GrpcPolledFdWindows(s, map->combiner_, af, type);
+    GRPC_CARES_TRACE_LOG(
+        "fd:|%s| created with params af:%d type:%d protocol:%d",
+        polled_fd->GetName(), af, type, protocol);
+    map->AddNewSocket(s, polled_fd);
+    return s;
+  }
+
+  static int Connect(ares_socket_t as, const struct sockaddr* target,
+                     ares_socklen_t target_len, void* user_data) {
+    WSAErrorContext wsa_error_ctx;
+    SockToPolledFdMap* map = static_cast<SockToPolledFdMap*>(user_data);
+    GrpcPolledFdWindows* polled_fd = map->LookupPolledFd(as);
+    return polled_fd->Connect(&wsa_error_ctx, target, target_len);
+  }
+
+  static ares_ssize_t SendV(ares_socket_t as, const struct iovec* iov,
+                            int iovec_count, void* user_data) {
+    WSAErrorContext wsa_error_ctx;
+    SockToPolledFdMap* map = static_cast<SockToPolledFdMap*>(user_data);
+    GrpcPolledFdWindows* polled_fd = map->LookupPolledFd(as);
+    return polled_fd->SendV(&wsa_error_ctx, iov, iovec_count);
+  }
+
+  static ares_ssize_t RecvFrom(ares_socket_t as, void* data, size_t data_len,
+                               int flags, struct sockaddr* from,
+                               ares_socklen_t* from_len, void* user_data) {
+    WSAErrorContext wsa_error_ctx;
+    SockToPolledFdMap* map = static_cast<SockToPolledFdMap*>(user_data);
+    GrpcPolledFdWindows* polled_fd = map->LookupPolledFd(as);
+    return polled_fd->RecvFrom(&wsa_error_ctx, data, data_len, flags, from,
+                               from_len);
+  }
+
+  static int CloseSocket(SOCKET s, void* user_data) {
+    SockToPolledFdMap* map = static_cast<SockToPolledFdMap*>(user_data);
+    GrpcPolledFdWindows* polled_fd = map->LookupPolledFd(s);
+    map->RemoveEntry(s);
+    // See https://github.com/grpc/grpc/pull/20284, this trace log is
+    // intentionally placed to attempt to trigger a crash in case of a
+    // use after free on polled_fd.
+    GRPC_CARES_TRACE_LOG("CloseSocket called for socket: %s",
+                         polled_fd->GetName());
+    // If a gRPC polled fd has not made it in to the driver's list yet, then
+    // the driver has not and will never see this socket.
+    if (!polled_fd->gotten_into_driver_list()) {
+      polled_fd->ShutdownLocked(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Shut down c-ares fd before without it ever having made it into the "
+          "driver's list"));
+    }
+    delete polled_fd;
+    return 0;
+  }
+
+ private:
+  SockToPolledFdEntry* head_ = nullptr;
+  Combiner* combiner_;
+};
+
+const struct ares_socket_functions custom_ares_sock_funcs = {
+    &SockToPolledFdMap::Socket /* socket */,
+    &SockToPolledFdMap::CloseSocket /* close */,
+    &SockToPolledFdMap::Connect /* connect */,
+    &SockToPolledFdMap::RecvFrom /* recvfrom */,
+    &SockToPolledFdMap::SendV /* sendv */,
+};
+
+/* A thin wrapper over a GrpcPolledFdWindows object but with a shorter
+   lifetime. This object releases it's GrpcPolledFdWindows upon destruction,
+   so that c-ares can close it via usual socket teardown. */
+class GrpcPolledFdWindowsWrapper : public GrpcPolledFd {
+ public:
+  GrpcPolledFdWindowsWrapper(GrpcPolledFdWindows* wrapped)
+      : wrapped_(wrapped) {}
+
+  ~GrpcPolledFdWindowsWrapper() {}
+
+  void RegisterForOnReadableLocked(grpc_closure* read_closure) override {
+    wrapped_->RegisterForOnReadableLocked(read_closure);
+  }
+
+  void RegisterForOnWriteableLocked(grpc_closure* write_closure) override {
+    wrapped_->RegisterForOnWriteableLocked(write_closure);
+  }
+
+  bool IsFdStillReadableLocked() override {
+    return wrapped_->IsFdStillReadableLocked();
+  }
+
+  void ShutdownLocked(grpc_error* error) override {
+    wrapped_->ShutdownLocked(error);
+  }
+
+  ares_socket_t GetWrappedAresSocketLocked() override {
+    return wrapped_->GetWrappedAresSocketLocked();
+  }
+
+  const char* GetName() override { return wrapped_->GetName(); }
+
+ private:
+  GrpcPolledFdWindows* wrapped_;
+};
+
+class GrpcPolledFdFactoryWindows : public GrpcPolledFdFactory {
+ public:
+  GrpcPolledFdFactoryWindows(Combiner* combiner)
+      : sock_to_polled_fd_map_(combiner) {}
+
+  GrpcPolledFd* NewGrpcPolledFdLocked(ares_socket_t as,
+                                      grpc_pollset_set* driver_pollset_set,
+                                      Combiner* combiner) override {
+    GrpcPolledFdWindows* polled_fd = sock_to_polled_fd_map_.LookupPolledFd(as);
+    // Set a flag so that the virtual socket "close" method knows it
+    // doesn't need to call ShutdownLocked, since now the driver will.
+    polled_fd->set_gotten_into_driver_list();
+    return new GrpcPolledFdWindowsWrapper(polled_fd);
+  }
+
+  void ConfigureAresChannelLocked(ares_channel channel) override {
+    ares_set_socket_functions(channel, &custom_ares_sock_funcs,
+                              &sock_to_polled_fd_map_);
+  }
+
+ private:
+  SockToPolledFdMap sock_to_polled_fd_map_;
+};
+
+std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(
+    Combiner* combiner) {
+  return absl::make_unique<GrpcPolledFdFactoryWindows>(combiner);
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_ARES == 1 && defined(GPR_WINDOWS) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
new file mode 100644
index 0000000..761bed9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc	
@@ -0,0 +1,768 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if GRPC_ARES == 1
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include <string.h>
+#include <sys/types.h>
+
+#include <ares.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include <address_sorting/address_sorting.h>
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/nameser.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+using grpc_core::ServerAddress;
+using grpc_core::ServerAddressList;
+
+grpc_core::TraceFlag grpc_trace_cares_address_sorting(false,
+                                                      "cares_address_sorting");
+
+grpc_core::TraceFlag grpc_trace_cares_resolver(false, "cares_resolver");
+
+struct grpc_ares_request {
+  /** indicates the DNS server to use, if specified */
+  struct ares_addr_port_node dns_server_addr;
+  /** following members are set in grpc_resolve_address_ares_impl */
+  /** closure to call when the request completes */
+  grpc_closure* on_done;
+  /** the pointer to receive the resolved addresses */
+  std::unique_ptr<grpc_core::ServerAddressList>* addresses_out;
+  /** the pointer to receive the service config in JSON */
+  char** service_config_json_out;
+  /** the evernt driver used by this request */
+  grpc_ares_ev_driver* ev_driver;
+  /** number of ongoing queries */
+  size_t pending_queries;
+
+  /** the errors explaining query failures, appended to in query callbacks */
+  grpc_error* error;
+};
+
+typedef struct grpc_ares_hostbyname_request {
+  /** following members are set in create_hostbyname_request_locked
+   */
+  /** the top-level request instance */
+  grpc_ares_request* parent_request;
+  /** host to resolve, parsed from the name to resolve */
+  char* host;
+  /** port to fill in sockaddr_in, parsed from the name to resolve */
+  uint16_t port;
+  /** is it a grpclb address */
+  bool is_balancer;
+} grpc_ares_hostbyname_request;
+
+static void log_address_sorting_list(const ServerAddressList& addresses,
+                                     const char* input_output_str) {
+  for (size_t i = 0; i < addresses.size(); i++) {
+    char* addr_str;
+    if (grpc_sockaddr_to_string(&addr_str, &addresses[i].address(), true)) {
+      gpr_log(GPR_INFO, "c-ares address sorting: %s[%" PRIuPTR "]=%s",
+              input_output_str, i, addr_str);
+      gpr_free(addr_str);
+    } else {
+      gpr_log(GPR_INFO,
+              "c-ares address sorting: %s[%" PRIuPTR "]=<unprintable>",
+              input_output_str, i);
+    }
+  }
+}
+
+void grpc_cares_wrapper_address_sorting_sort(ServerAddressList* addresses) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_cares_address_sorting)) {
+    log_address_sorting_list(*addresses, "input");
+  }
+  address_sorting_sortable* sortables = (address_sorting_sortable*)gpr_zalloc(
+      sizeof(address_sorting_sortable) * addresses->size());
+  for (size_t i = 0; i < addresses->size(); ++i) {
+    sortables[i].user_data = &(*addresses)[i];
+    memcpy(&sortables[i].dest_addr.addr, &(*addresses)[i].address().addr,
+           (*addresses)[i].address().len);
+    sortables[i].dest_addr.len = (*addresses)[i].address().len;
+  }
+  address_sorting_rfc_6724_sort(sortables, addresses->size());
+  ServerAddressList sorted;
+  sorted.reserve(addresses->size());
+  for (size_t i = 0; i < addresses->size(); ++i) {
+    sorted.emplace_back(*static_cast<ServerAddress*>(sortables[i].user_data));
+  }
+  gpr_free(sortables);
+  *addresses = std::move(sorted);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_cares_address_sorting)) {
+    log_address_sorting_list(*addresses, "output");
+  }
+}
+
+static void grpc_ares_request_ref_locked(grpc_ares_request* r) {
+  r->pending_queries++;
+}
+
+static void grpc_ares_request_unref_locked(grpc_ares_request* r) {
+  r->pending_queries--;
+  if (r->pending_queries == 0u) {
+    grpc_ares_ev_driver_on_queries_complete_locked(r->ev_driver);
+  }
+}
+
+void grpc_ares_complete_request_locked(grpc_ares_request* r) {
+  /* Invoke on_done callback and destroy the
+     request */
+  r->ev_driver = nullptr;
+  ServerAddressList* addresses = r->addresses_out->get();
+  if (addresses != nullptr) {
+    grpc_cares_wrapper_address_sorting_sort(addresses);
+    GRPC_ERROR_UNREF(r->error);
+    r->error = GRPC_ERROR_NONE;
+    // TODO(apolcyn): allow c-ares to return a service config
+    // with no addresses along side it
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_done, r->error);
+}
+
+static grpc_ares_hostbyname_request* create_hostbyname_request_locked(
+    grpc_ares_request* parent_request, char* host, uint16_t port,
+    bool is_balancer) {
+  GRPC_CARES_TRACE_LOG(
+      "request:%p create_hostbyname_request_locked host:%s port:%d "
+      "is_balancer:%d",
+      parent_request, host, port, is_balancer);
+  grpc_ares_hostbyname_request* hr = static_cast<grpc_ares_hostbyname_request*>(
+      gpr_zalloc(sizeof(grpc_ares_hostbyname_request)));
+  hr->parent_request = parent_request;
+  hr->host = gpr_strdup(host);
+  hr->port = port;
+  hr->is_balancer = is_balancer;
+  grpc_ares_request_ref_locked(parent_request);
+  return hr;
+}
+
+static void destroy_hostbyname_request_locked(
+    grpc_ares_hostbyname_request* hr) {
+  grpc_ares_request_unref_locked(hr->parent_request);
+  gpr_free(hr->host);
+  gpr_free(hr);
+}
+
+static void on_hostbyname_done_locked(void* arg, int status, int /*timeouts*/,
+                                      struct hostent* hostent) {
+  grpc_ares_hostbyname_request* hr =
+      static_cast<grpc_ares_hostbyname_request*>(arg);
+  grpc_ares_request* r = hr->parent_request;
+  if (status == ARES_SUCCESS) {
+    GRPC_CARES_TRACE_LOG(
+        "request:%p on_hostbyname_done_locked host=%s ARES_SUCCESS", r,
+        hr->host);
+    if (*r->addresses_out == nullptr) {
+      *r->addresses_out = absl::make_unique<ServerAddressList>();
+    }
+    ServerAddressList& addresses = **r->addresses_out;
+    for (size_t i = 0; hostent->h_addr_list[i] != nullptr; ++i) {
+      grpc_core::InlinedVector<grpc_arg, 2> args_to_add;
+      if (hr->is_balancer) {
+        args_to_add.emplace_back(grpc_channel_arg_integer_create(
+            const_cast<char*>(GRPC_ARG_ADDRESS_IS_BALANCER), 1));
+        args_to_add.emplace_back(grpc_channel_arg_string_create(
+            const_cast<char*>(GRPC_ARG_ADDRESS_BALANCER_NAME), hr->host));
+      }
+      grpc_channel_args* args = grpc_channel_args_copy_and_add(
+          nullptr, args_to_add.data(), args_to_add.size());
+      switch (hostent->h_addrtype) {
+        case AF_INET6: {
+          size_t addr_len = sizeof(struct sockaddr_in6);
+          struct sockaddr_in6 addr;
+          memset(&addr, 0, addr_len);
+          memcpy(&addr.sin6_addr, hostent->h_addr_list[i],
+                 sizeof(struct in6_addr));
+          addr.sin6_family = static_cast<unsigned char>(hostent->h_addrtype);
+          addr.sin6_port = hr->port;
+          addresses.emplace_back(&addr, addr_len, args);
+          char output[INET6_ADDRSTRLEN];
+          ares_inet_ntop(AF_INET6, &addr.sin6_addr, output, INET6_ADDRSTRLEN);
+          GRPC_CARES_TRACE_LOG(
+              "request:%p c-ares resolver gets a AF_INET6 result: \n"
+              "  addr: %s\n  port: %d\n  sin6_scope_id: %d\n",
+              r, output, ntohs(hr->port), addr.sin6_scope_id);
+          break;
+        }
+        case AF_INET: {
+          size_t addr_len = sizeof(struct sockaddr_in);
+          struct sockaddr_in addr;
+          memset(&addr, 0, addr_len);
+          memcpy(&addr.sin_addr, hostent->h_addr_list[i],
+                 sizeof(struct in_addr));
+          addr.sin_family = static_cast<unsigned char>(hostent->h_addrtype);
+          addr.sin_port = hr->port;
+          addresses.emplace_back(&addr, addr_len, args);
+          char output[INET_ADDRSTRLEN];
+          ares_inet_ntop(AF_INET, &addr.sin_addr, output, INET_ADDRSTRLEN);
+          GRPC_CARES_TRACE_LOG(
+              "request:%p c-ares resolver gets a AF_INET result: \n"
+              "  addr: %s\n  port: %d\n",
+              r, output, ntohs(hr->port));
+          break;
+        }
+      }
+    }
+  } else {
+    char* error_msg;
+    gpr_asprintf(&error_msg, "C-ares status is not ARES_SUCCESS: %s",
+                 ares_strerror(status));
+    GRPC_CARES_TRACE_LOG("request:%p on_hostbyname_done_locked host=%s %s", r,
+                         hr->host, error_msg);
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+    gpr_free(error_msg);
+    r->error = grpc_error_add_child(error, r->error);
+  }
+  destroy_hostbyname_request_locked(hr);
+}
+
+static void on_srv_query_done_locked(void* arg, int status, int /*timeouts*/,
+                                     unsigned char* abuf, int alen) {
+  grpc_ares_request* r = static_cast<grpc_ares_request*>(arg);
+  if (status == ARES_SUCCESS) {
+    GRPC_CARES_TRACE_LOG("request:%p on_srv_query_done_locked ARES_SUCCESS", r);
+    struct ares_srv_reply* reply;
+    const int parse_status = ares_parse_srv_reply(abuf, alen, &reply);
+    GRPC_CARES_TRACE_LOG("request:%p ares_parse_srv_reply: %d", r,
+                         parse_status);
+    if (parse_status == ARES_SUCCESS) {
+      ares_channel* channel =
+          grpc_ares_ev_driver_get_channel_locked(r->ev_driver);
+      for (struct ares_srv_reply* srv_it = reply; srv_it != nullptr;
+           srv_it = srv_it->next) {
+        if (grpc_ares_query_ipv6()) {
+          grpc_ares_hostbyname_request* hr = create_hostbyname_request_locked(
+              r, srv_it->host, htons(srv_it->port), true /* is_balancer */);
+          ares_gethostbyname(*channel, hr->host, AF_INET6,
+                             on_hostbyname_done_locked, hr);
+        }
+        grpc_ares_hostbyname_request* hr = create_hostbyname_request_locked(
+            r, srv_it->host, htons(srv_it->port), true /* is_balancer */);
+        ares_gethostbyname(*channel, hr->host, AF_INET,
+                           on_hostbyname_done_locked, hr);
+        grpc_ares_ev_driver_start_locked(r->ev_driver);
+      }
+    }
+    if (reply != nullptr) {
+      ares_free_data(reply);
+    }
+  } else {
+    char* error_msg;
+    gpr_asprintf(&error_msg, "C-ares status is not ARES_SUCCESS: %s",
+                 ares_strerror(status));
+    GRPC_CARES_TRACE_LOG("request:%p on_srv_query_done_locked %s", r,
+                         error_msg);
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+    gpr_free(error_msg);
+    r->error = grpc_error_add_child(error, r->error);
+  }
+  grpc_ares_request_unref_locked(r);
+}
+
+static const char g_service_config_attribute_prefix[] = "grpc_config=";
+
+static void on_txt_done_locked(void* arg, int status, int /*timeouts*/,
+                               unsigned char* buf, int len) {
+  char* error_msg;
+  grpc_ares_request* r = static_cast<grpc_ares_request*>(arg);
+  const size_t prefix_len = sizeof(g_service_config_attribute_prefix) - 1;
+  struct ares_txt_ext* result = nullptr;
+  struct ares_txt_ext* reply = nullptr;
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (status != ARES_SUCCESS) goto fail;
+  GRPC_CARES_TRACE_LOG("request:%p on_txt_done_locked ARES_SUCCESS", r);
+  status = ares_parse_txt_reply_ext(buf, len, &reply);
+  if (status != ARES_SUCCESS) goto fail;
+  // Find service config in TXT record.
+  for (result = reply; result != nullptr; result = result->next) {
+    if (result->record_start &&
+        memcmp(result->txt, g_service_config_attribute_prefix, prefix_len) ==
+            0) {
+      break;
+    }
+  }
+  // Found a service config record.
+  if (result != nullptr) {
+    size_t service_config_len = result->length - prefix_len;
+    *r->service_config_json_out =
+        static_cast<char*>(gpr_malloc(service_config_len + 1));
+    memcpy(*r->service_config_json_out, result->txt + prefix_len,
+           service_config_len);
+    for (result = result->next; result != nullptr && !result->record_start;
+         result = result->next) {
+      *r->service_config_json_out = static_cast<char*>(
+          gpr_realloc(*r->service_config_json_out,
+                      service_config_len + result->length + 1));
+      memcpy(*r->service_config_json_out + service_config_len, result->txt,
+             result->length);
+      service_config_len += result->length;
+    }
+    (*r->service_config_json_out)[service_config_len] = '\0';
+    GRPC_CARES_TRACE_LOG("request:%p found service config: %s", r,
+                         *r->service_config_json_out);
+  }
+  // Clean up.
+  ares_free_data(reply);
+  goto done;
+fail:
+  gpr_asprintf(&error_msg, "C-ares TXT lookup status is not ARES_SUCCESS: %s",
+               ares_strerror(status));
+  error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+  GRPC_CARES_TRACE_LOG("request:%p on_txt_done_locked %s", r, error_msg);
+  gpr_free(error_msg);
+  r->error = grpc_error_add_child(error, r->error);
+done:
+  grpc_ares_request_unref_locked(r);
+}
+
+void grpc_dns_lookup_ares_continue_after_check_localhost_and_ip_literals_locked(
+    grpc_ares_request* r, const char* dns_server, const char* name,
+    const char* default_port, grpc_pollset_set* interested_parties,
+    bool check_grpclb, int query_timeout_ms, grpc_core::Combiner* combiner) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_ares_hostbyname_request* hr = nullptr;
+  ares_channel* channel = nullptr;
+  /* parse name, splitting it into host and port parts */
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  grpc_core::SplitHostPort(name, &host, &port);
+  if (host == nullptr) {
+    error = grpc_error_set_str(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("unparseable host:port"),
+        GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+    goto error_cleanup;
+  } else if (port == nullptr) {
+    if (default_port == nullptr) {
+      error = grpc_error_set_str(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("no port in name"),
+          GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+      goto error_cleanup;
+    }
+    port.reset(gpr_strdup(default_port));
+  }
+  error = grpc_ares_ev_driver_create_locked(&r->ev_driver, interested_parties,
+                                            query_timeout_ms, combiner, r);
+  if (error != GRPC_ERROR_NONE) goto error_cleanup;
+  channel = grpc_ares_ev_driver_get_channel_locked(r->ev_driver);
+  // If dns_server is specified, use it.
+  if (dns_server != nullptr) {
+    GRPC_CARES_TRACE_LOG("request:%p Using DNS server %s", r, dns_server);
+    grpc_resolved_address addr;
+    if (grpc_parse_ipv4_hostport(dns_server, &addr, false /* log_errors */)) {
+      r->dns_server_addr.family = AF_INET;
+      struct sockaddr_in* in = reinterpret_cast<struct sockaddr_in*>(addr.addr);
+      memcpy(&r->dns_server_addr.addr.addr4, &in->sin_addr,
+             sizeof(struct in_addr));
+      r->dns_server_addr.tcp_port = grpc_sockaddr_get_port(&addr);
+      r->dns_server_addr.udp_port = grpc_sockaddr_get_port(&addr);
+    } else if (grpc_parse_ipv6_hostport(dns_server, &addr,
+                                        false /* log_errors */)) {
+      r->dns_server_addr.family = AF_INET6;
+      struct sockaddr_in6* in6 =
+          reinterpret_cast<struct sockaddr_in6*>(addr.addr);
+      memcpy(&r->dns_server_addr.addr.addr6, &in6->sin6_addr,
+             sizeof(struct in6_addr));
+      r->dns_server_addr.tcp_port = grpc_sockaddr_get_port(&addr);
+      r->dns_server_addr.udp_port = grpc_sockaddr_get_port(&addr);
+    } else {
+      error = grpc_error_set_str(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("cannot parse authority"),
+          GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+      goto error_cleanup;
+    }
+    int status = ares_set_servers_ports(*channel, &r->dns_server_addr);
+    if (status != ARES_SUCCESS) {
+      char* error_msg;
+      gpr_asprintf(&error_msg, "C-ares status is not ARES_SUCCESS: %s",
+                   ares_strerror(status));
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+      gpr_free(error_msg);
+      goto error_cleanup;
+    }
+  }
+  r->pending_queries = 1;
+  if (grpc_ares_query_ipv6()) {
+    hr = create_hostbyname_request_locked(r, host.get(),
+                                          grpc_strhtons(port.get()),
+                                          /*is_balancer=*/false);
+    ares_gethostbyname(*channel, hr->host, AF_INET6, on_hostbyname_done_locked,
+                       hr);
+  }
+  hr =
+      create_hostbyname_request_locked(r, host.get(), grpc_strhtons(port.get()),
+                                       /*is_balancer=*/false);
+  ares_gethostbyname(*channel, hr->host, AF_INET, on_hostbyname_done_locked,
+                     hr);
+  if (check_grpclb) {
+    /* Query the SRV record */
+    grpc_ares_request_ref_locked(r);
+    char* service_name;
+    gpr_asprintf(&service_name, "_grpclb._tcp.%s", host.get());
+    ares_query(*channel, service_name, ns_c_in, ns_t_srv,
+               on_srv_query_done_locked, r);
+    gpr_free(service_name);
+  }
+  if (r->service_config_json_out != nullptr) {
+    grpc_ares_request_ref_locked(r);
+    char* config_name;
+    gpr_asprintf(&config_name, "_grpc_config.%s", host.get());
+    ares_search(*channel, config_name, ns_c_in, ns_t_txt, on_txt_done_locked,
+                r);
+    gpr_free(config_name);
+  }
+  grpc_ares_ev_driver_start_locked(r->ev_driver);
+  grpc_ares_request_unref_locked(r);
+  return;
+
+error_cleanup:
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_done, error);
+}
+
+static bool inner_resolve_as_ip_literal_locked(
+    const char* name, const char* default_port,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs,
+    grpc_core::UniquePtr<char>* host, grpc_core::UniquePtr<char>* port,
+    grpc_core::UniquePtr<char>* hostport) {
+  grpc_core::SplitHostPort(name, host, port);
+  if (*host == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Failed to parse %s to host:port while attempting to resolve as ip "
+            "literal.",
+            name);
+    return false;
+  }
+  if (*port == nullptr) {
+    if (default_port == nullptr) {
+      gpr_log(GPR_ERROR,
+              "No port or default port for %s while attempting to resolve as "
+              "ip literal.",
+              name);
+      return false;
+    }
+    port->reset(gpr_strdup(default_port));
+  }
+  grpc_resolved_address addr;
+  GPR_ASSERT(grpc_core::JoinHostPort(hostport, host->get(), atoi(port->get())));
+  if (grpc_parse_ipv4_hostport(hostport->get(), &addr,
+                               false /* log errors */) ||
+      grpc_parse_ipv6_hostport(hostport->get(), &addr,
+                               false /* log errors */)) {
+    GPR_ASSERT(*addrs == nullptr);
+    *addrs = absl::make_unique<ServerAddressList>();
+    (*addrs)->emplace_back(addr.addr, addr.len, nullptr /* args */);
+    return true;
+  }
+  return false;
+}
+
+static bool resolve_as_ip_literal_locked(
+    const char* name, const char* default_port,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs) {
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  grpc_core::UniquePtr<char> hostport;
+  bool out = inner_resolve_as_ip_literal_locked(name, default_port, addrs,
+                                                &host, &port, &hostport);
+  return out;
+}
+
+static bool target_matches_localhost_inner(const char* name,
+                                           grpc_core::UniquePtr<char>* host,
+                                           grpc_core::UniquePtr<char>* port) {
+  if (!grpc_core::SplitHostPort(name, host, port)) {
+    gpr_log(GPR_ERROR, "Unable to split host and port for name: %s", name);
+    return false;
+  }
+  if (gpr_stricmp(host->get(), "localhost") == 0) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+static bool target_matches_localhost(const char* name) {
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  return target_matches_localhost_inner(name, &host, &port);
+}
+
+#ifdef GRPC_ARES_RESOLVE_LOCALHOST_MANUALLY
+static bool inner_maybe_resolve_localhost_manually_locked(
+    const char* name, const char* default_port,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs,
+    grpc_core::UniquePtr<char>* host, grpc_core::UniquePtr<char>* port) {
+  grpc_core::SplitHostPort(name, host, port);
+  if (*host == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Failed to parse %s into host:port during manual localhost "
+            "resolution check.",
+            name);
+    return false;
+  }
+  if (*port == nullptr) {
+    if (default_port == nullptr) {
+      gpr_log(GPR_ERROR,
+              "No port or default port for %s during manual localhost "
+              "resolution check.",
+              name);
+      return false;
+    }
+    port->reset(gpr_strdup(default_port));
+  }
+  if (gpr_stricmp(host->get(), "localhost") == 0) {
+    GPR_ASSERT(*addrs == nullptr);
+    *addrs = absl::make_unique<grpc_core::ServerAddressList>();
+    uint16_t numeric_port = grpc_strhtons(port->get());
+    // Append the ipv6 loopback address.
+    struct sockaddr_in6 ipv6_loopback_addr;
+    memset(&ipv6_loopback_addr, 0, sizeof(ipv6_loopback_addr));
+    ((char*)&ipv6_loopback_addr.sin6_addr)[15] = 1;
+    ipv6_loopback_addr.sin6_family = AF_INET6;
+    ipv6_loopback_addr.sin6_port = numeric_port;
+    (*addrs)->emplace_back(&ipv6_loopback_addr, sizeof(ipv6_loopback_addr),
+                           nullptr /* args */);
+    // Append the ipv4 loopback address.
+    struct sockaddr_in ipv4_loopback_addr;
+    memset(&ipv4_loopback_addr, 0, sizeof(ipv4_loopback_addr));
+    ((char*)&ipv4_loopback_addr.sin_addr)[0] = 0x7f;
+    ((char*)&ipv4_loopback_addr.sin_addr)[3] = 0x01;
+    ipv4_loopback_addr.sin_family = AF_INET;
+    ipv4_loopback_addr.sin_port = numeric_port;
+    (*addrs)->emplace_back(&ipv4_loopback_addr, sizeof(ipv4_loopback_addr),
+                           nullptr /* args */);
+    // Let the address sorter figure out which one should be tried first.
+    grpc_cares_wrapper_address_sorting_sort(addrs->get());
+    return true;
+  }
+  return false;
+}
+
+static bool grpc_ares_maybe_resolve_localhost_manually_locked(
+    const char* name, const char* default_port,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs) {
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  return inner_maybe_resolve_localhost_manually_locked(name, default_port,
+                                                       addrs, &host, &port);
+}
+#else  /* GRPC_ARES_RESOLVE_LOCALHOST_MANUALLY */
+static bool grpc_ares_maybe_resolve_localhost_manually_locked(
+    const char* /*name*/, const char* /*default_port*/,
+    std::unique_ptr<grpc_core::ServerAddressList>* /*addrs*/) {
+  return false;
+}
+#endif /* GRPC_ARES_RESOLVE_LOCALHOST_MANUALLY */
+
+static grpc_ares_request* grpc_dns_lookup_ares_locked_impl(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner) {
+  grpc_ares_request* r =
+      static_cast<grpc_ares_request*>(gpr_zalloc(sizeof(grpc_ares_request)));
+  r->ev_driver = nullptr;
+  r->on_done = on_done;
+  r->addresses_out = addrs;
+  r->service_config_json_out = service_config_json;
+  r->error = GRPC_ERROR_NONE;
+  r->pending_queries = 0;
+  GRPC_CARES_TRACE_LOG(
+      "request:%p c-ares grpc_dns_lookup_ares_locked_impl name=%s, "
+      "default_port=%s",
+      r, name, default_port);
+  // Early out if the target is an ipv4 or ipv6 literal.
+  if (resolve_as_ip_literal_locked(name, default_port, addrs)) {
+    grpc_ares_complete_request_locked(r);
+    return r;
+  }
+  // Early out if the target is localhost and we're on Windows.
+  if (grpc_ares_maybe_resolve_localhost_manually_locked(name, default_port,
+                                                        addrs)) {
+    grpc_ares_complete_request_locked(r);
+    return r;
+  }
+  // Don't query for SRV and TXT records if the target is "localhost", so
+  // as to cut down on lookups over the network, especially in tests:
+  // https://github.com/grpc/proposal/pull/79
+  if (target_matches_localhost(name)) {
+    check_grpclb = false;
+    r->service_config_json_out = nullptr;
+  }
+  // Look up name using c-ares lib.
+  grpc_dns_lookup_ares_continue_after_check_localhost_and_ip_literals_locked(
+      r, dns_server, name, default_port, interested_parties, check_grpclb,
+      query_timeout_ms, combiner);
+  return r;
+}
+
+grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner) = grpc_dns_lookup_ares_locked_impl;
+
+static void grpc_cancel_ares_request_locked_impl(grpc_ares_request* r) {
+  GPR_ASSERT(r != nullptr);
+  if (r->ev_driver != nullptr) {
+    grpc_ares_ev_driver_shutdown_locked(r->ev_driver);
+  }
+}
+
+void (*grpc_cancel_ares_request_locked)(grpc_ares_request* r) =
+    grpc_cancel_ares_request_locked_impl;
+
+// ares_library_init and ares_library_cleanup are currently no-op except under
+// Windows. Calling them may cause race conditions when other parts of the
+// binary calls these functions concurrently.
+#ifdef GPR_WINDOWS
+grpc_error* grpc_ares_init(void) {
+  int status = ares_library_init(ARES_LIB_INIT_ALL);
+  if (status != ARES_SUCCESS) {
+    char* error_msg;
+    gpr_asprintf(&error_msg, "ares_library_init failed: %s",
+                 ares_strerror(status));
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+    gpr_free(error_msg);
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_ares_cleanup(void) { ares_library_cleanup(); }
+#else
+grpc_error* grpc_ares_init(void) { return GRPC_ERROR_NONE; }
+void grpc_ares_cleanup(void) {}
+#endif  // GPR_WINDOWS
+
+/*
+ * grpc_resolve_address_ares related structs and functions
+ */
+
+typedef struct grpc_resolve_address_ares_request {
+  /* combiner that queries and related callbacks run under */
+  grpc_core::Combiner* combiner;
+  /** the pointer to receive the resolved addresses */
+  grpc_resolved_addresses** addrs_out;
+  /** currently resolving addresses */
+  std::unique_ptr<ServerAddressList> addresses;
+  /** closure to call when the resolve_address_ares request completes */
+  grpc_closure* on_resolve_address_done;
+  /** a closure wrapping on_resolve_address_done, which should be invoked when
+     the grpc_dns_lookup_ares_locked operation is done. */
+  grpc_closure on_dns_lookup_done_locked;
+  /* target name */
+  const char* name;
+  /* default port to use if none is specified */
+  const char* default_port;
+  /* pollset_set to be driven by */
+  grpc_pollset_set* interested_parties;
+  /* underlying ares_request that the query is performed on */
+  grpc_ares_request* ares_request = nullptr;
+} grpc_resolve_address_ares_request;
+
+static void on_dns_lookup_done_locked(void* arg, grpc_error* error) {
+  grpc_resolve_address_ares_request* r =
+      static_cast<grpc_resolve_address_ares_request*>(arg);
+  gpr_free(r->ares_request);
+  grpc_resolved_addresses** resolved_addresses = r->addrs_out;
+  if (r->addresses == nullptr || r->addresses->empty()) {
+    *resolved_addresses = nullptr;
+  } else {
+    *resolved_addresses = static_cast<grpc_resolved_addresses*>(
+        gpr_zalloc(sizeof(grpc_resolved_addresses)));
+    (*resolved_addresses)->naddrs = r->addresses->size();
+    (*resolved_addresses)->addrs =
+        static_cast<grpc_resolved_address*>(gpr_zalloc(
+            sizeof(grpc_resolved_address) * (*resolved_addresses)->naddrs));
+    for (size_t i = 0; i < (*resolved_addresses)->naddrs; ++i) {
+      GPR_ASSERT(!(*r->addresses)[i].IsBalancer());
+      memcpy(&(*resolved_addresses)->addrs[i], &(*r->addresses)[i].address(),
+             sizeof(grpc_resolved_address));
+    }
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_resolve_address_done,
+                          GRPC_ERROR_REF(error));
+  GRPC_COMBINER_UNREF(r->combiner, "on_dns_lookup_done_cb");
+  delete r;
+}
+
+static void on_dns_lookup_done(void* arg, grpc_error* error) {
+  grpc_resolve_address_ares_request* r =
+      static_cast<grpc_resolve_address_ares_request*>(arg);
+  r->combiner->Run(GRPC_CLOSURE_INIT(&r->on_dns_lookup_done_locked,
+                                     on_dns_lookup_done_locked, r, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void grpc_resolve_address_invoke_dns_lookup_ares_locked(
+    void* arg, grpc_error* /*unused_error*/) {
+  grpc_resolve_address_ares_request* r =
+      static_cast<grpc_resolve_address_ares_request*>(arg);
+  GRPC_CLOSURE_INIT(&r->on_dns_lookup_done_locked, on_dns_lookup_done, r,
+                    grpc_schedule_on_exec_ctx);
+  r->ares_request = grpc_dns_lookup_ares_locked(
+      nullptr /* dns_server */, r->name, r->default_port, r->interested_parties,
+      &r->on_dns_lookup_done_locked, &r->addresses, false /* check_grpclb */,
+      nullptr /* service_config_json */, GRPC_DNS_ARES_DEFAULT_QUERY_TIMEOUT_MS,
+      r->combiner);
+}
+
+static void grpc_resolve_address_ares_impl(const char* name,
+                                           const char* default_port,
+                                           grpc_pollset_set* interested_parties,
+                                           grpc_closure* on_done,
+                                           grpc_resolved_addresses** addrs) {
+  grpc_resolve_address_ares_request* r =
+      new grpc_resolve_address_ares_request();
+  r->combiner = grpc_combiner_create();
+  r->addrs_out = addrs;
+  r->on_resolve_address_done = on_done;
+  r->name = name;
+  r->default_port = default_port;
+  r->interested_parties = interested_parties;
+  r->combiner->Run(
+      GRPC_CLOSURE_CREATE(grpc_resolve_address_invoke_dns_lookup_ares_locked, r,
+                          nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void (*grpc_resolve_address_ares)(
+    const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    grpc_resolved_addresses** addrs) = grpc_resolve_address_ares_impl;
+
+#endif /* GRPC_ARES == 1 */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h
new file mode 100644
index 0000000..1150181
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#define GRPC_DNS_ARES_DEFAULT_QUERY_TIMEOUT_MS 120000
+
+extern grpc_core::TraceFlag grpc_trace_cares_address_sorting;
+
+extern grpc_core::TraceFlag grpc_trace_cares_resolver;
+
+#define GRPC_CARES_TRACE_LOG(format, ...)                           \
+  do {                                                              \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_cares_resolver)) {       \
+      gpr_log(GPR_DEBUG, "(c-ares resolver) " format, __VA_ARGS__); \
+    }                                                               \
+  } while (0)
+
+typedef struct grpc_ares_request grpc_ares_request;
+
+/* Asynchronously resolve \a name. Use \a default_port if a port isn't
+   designated in \a name, otherwise use the port in \a name. grpc_ares_init()
+   must be called at least once before this function. \a on_done may be
+   called directly in this function without being scheduled with \a exec_ctx,
+   so it must not try to acquire locks that are being held by the caller. */
+extern void (*grpc_resolve_address_ares)(const char* name,
+                                         const char* default_port,
+                                         grpc_pollset_set* interested_parties,
+                                         grpc_closure* on_done,
+                                         grpc_resolved_addresses** addresses);
+
+/* Asynchronously resolve \a name. It will try to resolve grpclb SRV records in
+  addition to the normal address records. For normal address records, it uses
+  \a default_port if a port isn't designated in \a name, otherwise it uses the
+  port in \a name. grpc_ares_init() must be called at least once before this
+  function. \a on_done may be called directly in this function without being
+  scheduled with \a exec_ctx, so it must not try to acquire locks that are
+  being held by the caller. The returned grpc_ares_request object is owned
+  by the caller and it is safe to free after on_done is called back. */
+extern grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addresses, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner);
+
+/* Cancel the pending grpc_ares_request \a request */
+extern void (*grpc_cancel_ares_request_locked)(grpc_ares_request* request);
+
+/* Initialize gRPC ares wrapper. Must be called at least once before
+   grpc_resolve_address_ares(). */
+grpc_error* grpc_ares_init(void);
+
+/* Uninitialized gRPC ares wrapper. If there was more than one previous call to
+   grpc_ares_init(), this function uninitializes the gRPC ares wrapper only if
+   it has been called the same number of times as grpc_ares_init(). */
+void grpc_ares_cleanup(void);
+
+/** Schedules the desired callback for request completion
+ * and destroys the grpc_ares_request */
+void grpc_ares_complete_request_locked(grpc_ares_request* request);
+
+/* Indicates whether or not AAAA queries should be attempted. */
+/* E.g., return false if ipv6 is known to not be available. */
+bool grpc_ares_query_ipv6();
+
+/* Sorts destinations in lb_addrs according to RFC 6724. */
+void grpc_cares_wrapper_address_sorting_sort(
+    grpc_core::ServerAddressList* addresses);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.cc
new file mode 100644
index 0000000..fe631f8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.cc	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2016-2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if GRPC_ARES != 1
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+
+struct grpc_ares_request {
+  char val;
+};
+
+static grpc_ares_request* grpc_dns_lookup_ares_locked_impl(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner) {
+  return NULL;
+}
+
+grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    std::unique_ptr<grpc_core::ServerAddressList>* addrs, bool check_grpclb,
+    char** service_config_json, int query_timeout_ms,
+    grpc_core::Combiner* combiner) = grpc_dns_lookup_ares_locked_impl;
+
+static void grpc_cancel_ares_request_locked_impl(grpc_ares_request* r) {}
+
+void (*grpc_cancel_ares_request_locked)(grpc_ares_request* r) =
+    grpc_cancel_ares_request_locked_impl;
+
+grpc_error* grpc_ares_init(void) { return GRPC_ERROR_NONE; }
+
+void grpc_ares_cleanup(void) {}
+
+static void grpc_resolve_address_ares_impl(const char* name,
+                                           const char* default_port,
+                                           grpc_pollset_set* interested_parties,
+                                           grpc_closure* on_done,
+                                           grpc_resolved_addresses** addrs) {}
+
+void (*grpc_resolve_address_ares)(
+    const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    grpc_resolved_addresses** addrs) = grpc_resolve_address_ares_impl;
+
+#endif /* GRPC_ARES != 1 */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_libuv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_libuv.cc
new file mode 100644
index 0000000..d9e3293
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_libuv.cc	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_UV)
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/gpr/string.h"
+
+bool grpc_ares_query_ipv6() {
+  /* The libuv grpc code currently does not have the code to probe for this,
+   * so we assume for now that IPv6 is always available in contexts where this
+   * code will be used. */
+  return true;
+}
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_UV) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_posix.cc
new file mode 100644
index 0000000..23c0fec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_posix.cc	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET_ARES_EV_DRIVER)
+
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+bool grpc_ares_query_ipv6() { return grpc_ipv6_loopback_available(); }
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET_ARES_EV_DRIVER) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_windows.cc
new file mode 100644
index 0000000..1749cf7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_windows.cc	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_WINDOWS_SOCKET_ARES_EV_DRIVER)
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+bool grpc_ares_query_ipv6() { return grpc_ipv6_loopback_available(); }
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_WINDOWS_SOCKET_ARES_EV_DRIVER) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.cc
new file mode 100644
index 0000000..07a617c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.cc	
@@ -0,0 +1,28 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This is similar to the sockaddr resolver, except that it supports a
+// bunch of query args that are useful for dependency injection in tests.
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h"
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(
+    grpc_dns_resolver, "",
+    "Declares which DNS resolver to use. The default is ares if gRPC is built "
+    "with c-ares support. Otherwise, the value of this environment variable is "
+    "ignored.")
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h
new file mode 100644
index 0000000..d0a3486
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_dns_resolver);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_DNS_RESOLVER_SELECTION_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc
new file mode 100644
index 0000000..3b5b902
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc	
@@ -0,0 +1,321 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <climits>
+#include <cstring>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/ext/filters/client_channel/resolver/dns/dns_resolver_selection.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/timer.h"
+
+#define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_DNS_RECONNECT_JITTER 0.2
+
+namespace grpc_core {
+
+namespace {
+
+const char kDefaultPort[] = "https";
+
+class NativeDnsResolver : public Resolver {
+ public:
+  explicit NativeDnsResolver(ResolverArgs args);
+
+  void StartLocked() override;
+
+  void RequestReresolutionLocked() override;
+
+  void ResetBackoffLocked() override;
+
+  void ShutdownLocked() override;
+
+ private:
+  virtual ~NativeDnsResolver();
+
+  void MaybeStartResolvingLocked();
+  void StartResolvingLocked();
+
+  static void OnNextResolution(void* arg, grpc_error* error);
+  static void OnNextResolutionLocked(void* arg, grpc_error* error);
+  static void OnResolved(void* arg, grpc_error* error);
+  static void OnResolvedLocked(void* arg, grpc_error* error);
+
+  /// name to resolve
+  char* name_to_resolve_ = nullptr;
+  /// channel args
+  grpc_channel_args* channel_args_ = nullptr;
+  /// pollset_set to drive the name resolution process
+  grpc_pollset_set* interested_parties_ = nullptr;
+  /// are we shutting down?
+  bool shutdown_ = false;
+  /// are we currently resolving?
+  bool resolving_ = false;
+  grpc_closure on_resolved_;
+  /// next resolution timer
+  bool have_next_resolution_timer_ = false;
+  grpc_timer next_resolution_timer_;
+  grpc_closure on_next_resolution_;
+  /// min time between DNS requests
+  grpc_millis min_time_between_resolutions_;
+  /// timestamp of last DNS request
+  grpc_millis last_resolution_timestamp_ = -1;
+  /// retry backoff state
+  BackOff backoff_;
+  /// currently resolving addresses
+  grpc_resolved_addresses* addresses_ = nullptr;
+};
+
+NativeDnsResolver::NativeDnsResolver(ResolverArgs args)
+    : Resolver(args.combiner, std::move(args.result_handler)),
+      backoff_(
+          BackOff::Options()
+              .set_initial_backoff(GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS *
+                                   1000)
+              .set_multiplier(GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER)
+              .set_jitter(GRPC_DNS_RECONNECT_JITTER)
+              .set_max_backoff(GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS * 1000)) {
+  char* path = args.uri->path;
+  if (path[0] == '/') ++path;
+  name_to_resolve_ = gpr_strdup(path);
+  channel_args_ = grpc_channel_args_copy(args.args);
+  const grpc_arg* arg = grpc_channel_args_find(
+      args.args, GRPC_ARG_DNS_MIN_TIME_BETWEEN_RESOLUTIONS_MS);
+  min_time_between_resolutions_ =
+      grpc_channel_arg_get_integer(arg, {1000 * 30, 0, INT_MAX});
+  interested_parties_ = grpc_pollset_set_create();
+  if (args.pollset_set != nullptr) {
+    grpc_pollset_set_add_pollset_set(interested_parties_, args.pollset_set);
+  }
+}
+
+NativeDnsResolver::~NativeDnsResolver() {
+  grpc_channel_args_destroy(channel_args_);
+  grpc_pollset_set_destroy(interested_parties_);
+  gpr_free(name_to_resolve_);
+}
+
+void NativeDnsResolver::StartLocked() { MaybeStartResolvingLocked(); }
+
+void NativeDnsResolver::RequestReresolutionLocked() {
+  if (!resolving_) {
+    MaybeStartResolvingLocked();
+  }
+}
+
+void NativeDnsResolver::ResetBackoffLocked() {
+  if (have_next_resolution_timer_) {
+    grpc_timer_cancel(&next_resolution_timer_);
+  }
+  backoff_.Reset();
+}
+
+void NativeDnsResolver::ShutdownLocked() {
+  shutdown_ = true;
+  if (have_next_resolution_timer_) {
+    grpc_timer_cancel(&next_resolution_timer_);
+  }
+}
+
+void NativeDnsResolver::OnNextResolution(void* arg, grpc_error* error) {
+  NativeDnsResolver* r = static_cast<NativeDnsResolver*>(arg);
+  r->combiner()->Run(
+      GRPC_CLOSURE_INIT(&r->on_next_resolution_,
+                        NativeDnsResolver::OnNextResolutionLocked, r, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void NativeDnsResolver::OnNextResolutionLocked(void* arg, grpc_error* error) {
+  NativeDnsResolver* r = static_cast<NativeDnsResolver*>(arg);
+  r->have_next_resolution_timer_ = false;
+  if (error == GRPC_ERROR_NONE && !r->resolving_) {
+    r->StartResolvingLocked();
+  }
+  r->Unref(DEBUG_LOCATION, "retry-timer");
+}
+
+void NativeDnsResolver::OnResolved(void* arg, grpc_error* error) {
+  NativeDnsResolver* r = static_cast<NativeDnsResolver*>(arg);
+  r->combiner()->Run(
+      GRPC_CLOSURE_INIT(&r->on_resolved_, NativeDnsResolver::OnResolvedLocked,
+                        r, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void NativeDnsResolver::OnResolvedLocked(void* arg, grpc_error* error) {
+  NativeDnsResolver* r = static_cast<NativeDnsResolver*>(arg);
+  GPR_ASSERT(r->resolving_);
+  r->resolving_ = false;
+  if (r->shutdown_) {
+    r->Unref(DEBUG_LOCATION, "dns-resolving");
+    return;
+  }
+  if (r->addresses_ != nullptr) {
+    Result result;
+    for (size_t i = 0; i < r->addresses_->naddrs; ++i) {
+      result.addresses.emplace_back(&r->addresses_->addrs[i].addr,
+                                    r->addresses_->addrs[i].len,
+                                    nullptr /* args */);
+    }
+    grpc_resolved_addresses_destroy(r->addresses_);
+    result.args = grpc_channel_args_copy(r->channel_args_);
+    r->result_handler()->ReturnResult(std::move(result));
+    // Reset backoff state so that we start from the beginning when the
+    // next request gets triggered.
+    r->backoff_.Reset();
+  } else {
+    gpr_log(GPR_INFO, "dns resolution failed (will retry): %s",
+            grpc_error_string(error));
+    // Return transient error.
+    r->result_handler()->ReturnError(grpc_error_set_int(
+        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+            "DNS resolution failed", &error, 1),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    // Set up for retry.
+    grpc_millis next_try = r->backoff_.NextAttemptTime();
+    grpc_millis timeout = next_try - ExecCtx::Get()->Now();
+    GPR_ASSERT(!r->have_next_resolution_timer_);
+    r->have_next_resolution_timer_ = true;
+    // TODO(roth): We currently deal with this ref manually.  Once the
+    // new closure API is done, find a way to track this ref with the timer
+    // callback as part of the type system.
+    r->Ref(DEBUG_LOCATION, "next_resolution_timer").release();
+    if (timeout > 0) {
+      gpr_log(GPR_DEBUG, "retrying in %" PRId64 " milliseconds", timeout);
+    } else {
+      gpr_log(GPR_DEBUG, "retrying immediately");
+    }
+    GRPC_CLOSURE_INIT(&r->on_next_resolution_,
+                      NativeDnsResolver::OnNextResolution, r,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&r->next_resolution_timer_, next_try,
+                    &r->on_next_resolution_);
+  }
+  r->Unref(DEBUG_LOCATION, "dns-resolving");
+}
+
+void NativeDnsResolver::MaybeStartResolvingLocked() {
+  // If there is an existing timer, the time it fires is the earliest time we
+  // can start the next resolution.
+  if (have_next_resolution_timer_) return;
+  if (last_resolution_timestamp_ >= 0) {
+    const grpc_millis earliest_next_resolution =
+        last_resolution_timestamp_ + min_time_between_resolutions_;
+    const grpc_millis ms_until_next_resolution =
+        earliest_next_resolution - grpc_core::ExecCtx::Get()->Now();
+    if (ms_until_next_resolution > 0) {
+      const grpc_millis last_resolution_ago =
+          grpc_core::ExecCtx::Get()->Now() - last_resolution_timestamp_;
+      gpr_log(GPR_DEBUG,
+              "In cooldown from last resolution (from %" PRId64
+              " ms ago). Will resolve again in %" PRId64 " ms",
+              last_resolution_ago, ms_until_next_resolution);
+      have_next_resolution_timer_ = true;
+      // TODO(roth): We currently deal with this ref manually.  Once the
+      // new closure API is done, find a way to track this ref with the timer
+      // callback as part of the type system.
+      Ref(DEBUG_LOCATION, "next_resolution_timer_cooldown").release();
+      GRPC_CLOSURE_INIT(&on_next_resolution_,
+                        NativeDnsResolver::OnNextResolution, this,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&next_resolution_timer_,
+                      ExecCtx::Get()->Now() + ms_until_next_resolution,
+                      &on_next_resolution_);
+      return;
+    }
+  }
+  StartResolvingLocked();
+}
+
+void NativeDnsResolver::StartResolvingLocked() {
+  gpr_log(GPR_DEBUG, "Start resolving.");
+  // TODO(roth): We currently deal with this ref manually.  Once the
+  // new closure API is done, find a way to track this ref with the timer
+  // callback as part of the type system.
+  Ref(DEBUG_LOCATION, "dns-resolving").release();
+  GPR_ASSERT(!resolving_);
+  resolving_ = true;
+  addresses_ = nullptr;
+  GRPC_CLOSURE_INIT(&on_resolved_, NativeDnsResolver::OnResolved, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_resolve_address(name_to_resolve_, kDefaultPort, interested_parties_,
+                       &on_resolved_, &addresses_);
+  last_resolution_timestamp_ = grpc_core::ExecCtx::Get()->Now();
+}
+
+//
+// Factory
+//
+
+class NativeDnsResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* uri) const override {
+    if (GPR_UNLIKELY(0 != strcmp(uri->authority, ""))) {
+      gpr_log(GPR_ERROR, "authority based dns uri's not supported");
+      return false;
+    }
+    return true;
+  }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    if (!IsValidUri(args.uri)) return nullptr;
+    return MakeOrphanable<NativeDnsResolver>(std::move(args));
+  }
+
+  const char* scheme() const override { return "dns"; }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_resolver_dns_native_init() {
+  grpc_core::UniquePtr<char> resolver =
+      GPR_GLOBAL_CONFIG_GET(grpc_dns_resolver);
+  if (gpr_stricmp(resolver.get(), "native") == 0) {
+    gpr_log(GPR_DEBUG, "Using native dns resolver");
+    grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+        absl::make_unique<grpc_core::NativeDnsResolverFactory>());
+  } else {
+    grpc_core::ResolverRegistry::Builder::InitRegistry();
+    grpc_core::ResolverFactory* existing_factory =
+        grpc_core::ResolverRegistry::LookupResolverFactory("dns");
+    if (existing_factory == nullptr) {
+      gpr_log(GPR_DEBUG, "Using native dns resolver");
+      grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+          absl::make_unique<grpc_core::NativeDnsResolverFactory>());
+    }
+  }
+}
+
+void grpc_resolver_dns_native_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc
new file mode 100644
index 0000000..3066689
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc	
@@ -0,0 +1,392 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This is similar to the sockaddr resolver, except that it supports a
+// bunch of query args that are useful for dependency injection in tests.
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
+
+namespace grpc_core {
+
+// This cannot be in an anonymous namespace, because it is a friend of
+// FakeResolverResponseGenerator.
+class FakeResolver : public Resolver {
+ public:
+  explicit FakeResolver(ResolverArgs args);
+
+  void StartLocked() override;
+
+  void RequestReresolutionLocked() override;
+
+ private:
+  friend class FakeResolverResponseGenerator;
+
+  virtual ~FakeResolver();
+
+  void ShutdownLocked() override {
+    shutdown_ = true;
+    if (response_generator_ != nullptr) {
+      response_generator_->SetFakeResolver(nullptr);
+      response_generator_.reset();
+    }
+  }
+
+  void MaybeSendResultLocked();
+
+  static void ReturnReresolutionResult(void* arg, grpc_error* error);
+
+  // passed-in parameters
+  grpc_channel_args* channel_args_ = nullptr;
+  RefCountedPtr<FakeResolverResponseGenerator> response_generator_;
+  // If has_next_result_ is true, next_result_ is the next resolution result
+  // to be returned.
+  bool has_next_result_ = false;
+  Result next_result_;
+  // Result to use for the pretended re-resolution in
+  // RequestReresolutionLocked().
+  bool has_reresolution_result_ = false;
+  Result reresolution_result_;
+  // True after the call to StartLocked().
+  bool started_ = false;
+  // True after the call to ShutdownLocked().
+  bool shutdown_ = false;
+  // if true, return failure
+  bool return_failure_ = false;
+  // pending re-resolution
+  grpc_closure reresolution_closure_;
+  bool reresolution_closure_pending_ = false;
+};
+
+FakeResolver::FakeResolver(ResolverArgs args)
+    : Resolver(args.combiner, std::move(args.result_handler)),
+      response_generator_(
+          FakeResolverResponseGenerator::GetFromArgs(args.args)) {
+  // Channels sharing the same subchannels may have different resolver response
+  // generators. If we don't remove this arg, subchannel pool will create new
+  // subchannels for the same address instead of reusing existing ones because
+  // of different values of this channel arg.
+  const char* args_to_remove[] = {GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR};
+  channel_args_ = grpc_channel_args_copy_and_remove(
+      args.args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove));
+  if (response_generator_ != nullptr) {
+    response_generator_->SetFakeResolver(Ref());
+  }
+}
+
+FakeResolver::~FakeResolver() { grpc_channel_args_destroy(channel_args_); }
+
+void FakeResolver::StartLocked() {
+  started_ = true;
+  MaybeSendResultLocked();
+}
+
+void FakeResolver::RequestReresolutionLocked() {
+  if (has_reresolution_result_ || return_failure_) {
+    next_result_ = reresolution_result_;
+    has_next_result_ = true;
+    // Return the result in a different closure, so that we don't call
+    // back into the LB policy while it's still processing the previous
+    // update.
+    if (!reresolution_closure_pending_) {
+      reresolution_closure_pending_ = true;
+      Ref().release();  // ref held by closure
+      GRPC_CLOSURE_INIT(&reresolution_closure_, ReturnReresolutionResult, this,
+                        nullptr);
+      combiner()->Run(&reresolution_closure_, GRPC_ERROR_NONE);
+    }
+  }
+}
+
+void FakeResolver::MaybeSendResultLocked() {
+  if (!started_ || shutdown_) return;
+  if (return_failure_) {
+    // TODO(roth): Change resolver result generator to be able to inject
+    // the error to be returned.
+    result_handler()->ReturnError(grpc_error_set_int(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resolver transient failure"),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    return_failure_ = false;
+  } else if (has_next_result_) {
+    Result result;
+    result.addresses = std::move(next_result_.addresses);
+    result.service_config = std::move(next_result_.service_config);
+    // TODO(roth): Use std::move() once grpc_error is converted to C++.
+    result.service_config_error = next_result_.service_config_error;
+    next_result_.service_config_error = GRPC_ERROR_NONE;
+    // When both next_results_ and channel_args_ contain an arg with the same
+    // name, only the one in next_results_ will be kept since next_results_ is
+    // before channel_args_.
+    result.args = grpc_channel_args_union(next_result_.args, channel_args_);
+    result_handler()->ReturnResult(std::move(result));
+    has_next_result_ = false;
+  }
+}
+
+void FakeResolver::ReturnReresolutionResult(void* arg, grpc_error* /*error*/) {
+  FakeResolver* self = static_cast<FakeResolver*>(arg);
+  self->reresolution_closure_pending_ = false;
+  self->MaybeSendResultLocked();
+  self->Unref();
+}
+
+//
+// FakeResolverResponseGenerator
+//
+
+FakeResolverResponseGenerator::FakeResolverResponseGenerator() {}
+
+FakeResolverResponseGenerator::~FakeResolverResponseGenerator() {}
+
+struct SetResponseClosureArg {
+  grpc_closure set_response_closure;
+  RefCountedPtr<FakeResolver> resolver;
+  Resolver::Result result;
+  bool has_result = false;
+  bool immediate = true;
+};
+
+void FakeResolverResponseGenerator::SetResponseLocked(void* arg,
+                                                      grpc_error* /*error*/) {
+  SetResponseClosureArg* closure_arg = static_cast<SetResponseClosureArg*>(arg);
+  auto& resolver = closure_arg->resolver;
+  if (!resolver->shutdown_) {
+    resolver->next_result_ = std::move(closure_arg->result);
+    resolver->has_next_result_ = true;
+    resolver->MaybeSendResultLocked();
+  }
+  delete closure_arg;
+}
+
+void FakeResolverResponseGenerator::SetResponse(Resolver::Result result) {
+  RefCountedPtr<FakeResolver> resolver;
+  {
+    MutexLock lock(&mu_);
+    if (resolver_ == nullptr) {
+      has_result_ = true;
+      result_ = std::move(result);
+      return;
+    }
+    resolver = resolver_->Ref();
+  }
+  SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+  closure_arg->resolver = std::move(resolver);
+  closure_arg->result = std::move(result);
+  closure_arg->resolver->combiner()->Run(
+      GRPC_CLOSURE_INIT(&closure_arg->set_response_closure, SetResponseLocked,
+                        closure_arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void FakeResolverResponseGenerator::SetReresolutionResponseLocked(
+    void* arg, grpc_error* /*error*/) {
+  SetResponseClosureArg* closure_arg = static_cast<SetResponseClosureArg*>(arg);
+  auto& resolver = closure_arg->resolver;
+  if (!resolver->shutdown_) {
+    resolver->reresolution_result_ = std::move(closure_arg->result);
+    resolver->has_reresolution_result_ = closure_arg->has_result;
+  }
+  delete closure_arg;
+}
+
+void FakeResolverResponseGenerator::SetReresolutionResponse(
+    Resolver::Result result) {
+  RefCountedPtr<FakeResolver> resolver;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(resolver_ != nullptr);
+    resolver = resolver_->Ref();
+  }
+  SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+  closure_arg->resolver = std::move(resolver);
+  closure_arg->result = std::move(result);
+  closure_arg->has_result = true;
+  closure_arg->resolver->combiner()->Run(
+      GRPC_CLOSURE_INIT(&closure_arg->set_response_closure,
+                        SetReresolutionResponseLocked, closure_arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void FakeResolverResponseGenerator::UnsetReresolutionResponse() {
+  RefCountedPtr<FakeResolver> resolver;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(resolver_ != nullptr);
+    resolver = resolver_->Ref();
+  }
+  SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+  closure_arg->resolver = std::move(resolver);
+  closure_arg->resolver->combiner()->Run(
+      GRPC_CLOSURE_INIT(&closure_arg->set_response_closure,
+                        SetReresolutionResponseLocked, closure_arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void FakeResolverResponseGenerator::SetFailureLocked(void* arg,
+                                                     grpc_error* /*error*/) {
+  SetResponseClosureArg* closure_arg = static_cast<SetResponseClosureArg*>(arg);
+  auto& resolver = closure_arg->resolver;
+  if (!resolver->shutdown_) {
+    resolver->return_failure_ = true;
+    if (closure_arg->immediate) resolver->MaybeSendResultLocked();
+  }
+  delete closure_arg;
+}
+
+void FakeResolverResponseGenerator::SetFailure() {
+  RefCountedPtr<FakeResolver> resolver;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(resolver_ != nullptr);
+    resolver = resolver_->Ref();
+  }
+  SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+  closure_arg->resolver = std::move(resolver);
+  closure_arg->resolver->combiner()->Run(
+      GRPC_CLOSURE_INIT(&closure_arg->set_response_closure, SetFailureLocked,
+                        closure_arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void FakeResolverResponseGenerator::SetFailureOnReresolution() {
+  RefCountedPtr<FakeResolver> resolver;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(resolver_ != nullptr);
+    resolver = resolver_->Ref();
+  }
+  SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+  closure_arg->resolver = std::move(resolver);
+  closure_arg->immediate = false;
+  closure_arg->resolver->combiner()->Run(
+      GRPC_CLOSURE_INIT(&closure_arg->set_response_closure, SetFailureLocked,
+                        closure_arg, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void FakeResolverResponseGenerator::SetFakeResolver(
+    RefCountedPtr<FakeResolver> resolver) {
+  MutexLock lock(&mu_);
+  resolver_ = std::move(resolver);
+  if (resolver_ == nullptr) return;
+  if (has_result_) {
+    SetResponseClosureArg* closure_arg = new SetResponseClosureArg();
+    closure_arg->resolver = resolver_->Ref();
+    closure_arg->result = std::move(result_);
+    resolver_->combiner()->Run(
+        GRPC_CLOSURE_INIT(&closure_arg->set_response_closure, SetResponseLocked,
+                          closure_arg, nullptr),
+        GRPC_ERROR_NONE);
+    has_result_ = false;
+  }
+}
+
+namespace {
+
+static void* response_generator_arg_copy(void* p) {
+  FakeResolverResponseGenerator* generator =
+      static_cast<FakeResolverResponseGenerator*>(p);
+  // TODO(roth): We currently deal with this ref manually.  Once the
+  // new channel args code is converted to C++, find a way to track this ref
+  // in a cleaner way.
+  RefCountedPtr<FakeResolverResponseGenerator> copy = generator->Ref();
+  copy.release();
+  return p;
+}
+
+static void response_generator_arg_destroy(void* p) {
+  FakeResolverResponseGenerator* generator =
+      static_cast<FakeResolverResponseGenerator*>(p);
+  generator->Unref();
+}
+
+static int response_generator_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+static const grpc_arg_pointer_vtable response_generator_arg_vtable = {
+    response_generator_arg_copy, response_generator_arg_destroy,
+    response_generator_cmp};
+
+}  // namespace
+
+grpc_arg FakeResolverResponseGenerator::MakeChannelArg(
+    FakeResolverResponseGenerator* generator) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = (char*)GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR;
+  arg.value.pointer.p = generator;
+  arg.value.pointer.vtable = &response_generator_arg_vtable;
+  return arg;
+}
+
+RefCountedPtr<FakeResolverResponseGenerator>
+FakeResolverResponseGenerator::GetFromArgs(const grpc_channel_args* args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return nullptr;
+  return static_cast<FakeResolverResponseGenerator*>(arg->value.pointer.p)
+      ->Ref();
+}
+
+//
+// Factory
+//
+
+namespace {
+
+class FakeResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* /*uri*/) const override { return true; }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    return MakeOrphanable<FakeResolver>(std::move(args));
+  }
+
+  const char* scheme() const override { return "fake"; }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_resolver_fake_init() {
+  grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+      absl::make_unique<grpc_core::FakeResolverFactory>());
+}
+
+void grpc_resolver_fake_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h
new file mode 100644
index 0000000..c04c7c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h	
@@ -0,0 +1,97 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/error.h"
+
+#define GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR \
+  "grpc.fake_resolver.response_generator"
+
+namespace grpc_core {
+
+class FakeResolver;
+
+/// A mechanism for generating responses for the fake resolver.
+/// An instance of this class is passed to the fake resolver via a channel
+/// argument (see \a MakeChannelArg()) and used to inject and trigger custom
+/// resolutions.
+// TODO(roth): I would ideally like this to be InternallyRefCounted
+// instead of RefCounted, but external refs are currently needed to
+// encode this in channel args.  Once channel_args are converted to C++,
+// see if we can find a way to fix this.
+class FakeResolverResponseGenerator
+    : public RefCounted<FakeResolverResponseGenerator> {
+ public:
+  FakeResolverResponseGenerator();
+  ~FakeResolverResponseGenerator();
+
+  // Instructs the fake resolver associated with the response generator
+  // instance to trigger a new resolution with the specified result. If the
+  // resolver is not available yet, delays response setting until it is. This
+  // can be called at most once before the resolver is available.
+  void SetResponse(Resolver::Result result);
+
+  // Sets the re-resolution response, which is returned by the fake resolver
+  // when re-resolution is requested (via \a RequestReresolutionLocked()).
+  // The new re-resolution response replaces any previous re-resolution
+  // response that may have been set by a previous call.
+  void SetReresolutionResponse(Resolver::Result result);
+
+  // Unsets the re-resolution response.  After this, the fake resolver will
+  // not return anything when \a RequestReresolutionLocked() is called.
+  void UnsetReresolutionResponse();
+
+  // Tells the resolver to return a transient failure.
+  void SetFailure();
+
+  // Same as SetFailure(), but instead of returning the error
+  // immediately, waits for the next call to RequestReresolutionLocked().
+  void SetFailureOnReresolution();
+
+  // Returns a channel arg containing \a generator.
+  static grpc_arg MakeChannelArg(FakeResolverResponseGenerator* generator);
+
+  // Returns the response generator in \a args, or null if not found.
+  static RefCountedPtr<FakeResolverResponseGenerator> GetFromArgs(
+      const grpc_channel_args* args);
+
+ private:
+  friend class FakeResolver;
+  // Set the corresponding FakeResolver to this generator.
+  void SetFakeResolver(RefCountedPtr<FakeResolver> resolver);
+
+  static void SetResponseLocked(void* arg, grpc_error* error);
+  static void SetReresolutionResponseLocked(void* arg, grpc_error* error);
+  static void SetFailureLocked(void* arg, grpc_error* error);
+
+  // Mutex protecting the members below.
+  Mutex mu_;
+  RefCountedPtr<FakeResolver> resolver_;
+  Resolver::Result result_;
+  bool has_result_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FAKE_FAKE_RESOLVER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc
new file mode 100644
index 0000000..ef13043
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc	
@@ -0,0 +1,188 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+namespace grpc_core {
+
+namespace {
+
+class SockaddrResolver : public Resolver {
+ public:
+  SockaddrResolver(ServerAddressList addresses, ResolverArgs args);
+  ~SockaddrResolver() override;
+
+  void StartLocked() override;
+
+  void ShutdownLocked() override {}
+
+ private:
+  ServerAddressList addresses_;
+  const grpc_channel_args* channel_args_ = nullptr;
+};
+
+SockaddrResolver::SockaddrResolver(ServerAddressList addresses,
+                                   ResolverArgs args)
+    : Resolver(args.combiner, std::move(args.result_handler)),
+      addresses_(std::move(addresses)),
+      channel_args_(grpc_channel_args_copy(args.args)) {}
+
+SockaddrResolver::~SockaddrResolver() {
+  grpc_channel_args_destroy(channel_args_);
+}
+
+void SockaddrResolver::StartLocked() {
+  Result result;
+  result.addresses = std::move(addresses_);
+  // TODO(roth): Use std::move() once channel args is converted to C++.
+  result.args = channel_args_;
+  channel_args_ = nullptr;
+  result_handler()->ReturnResult(std::move(result));
+}
+
+//
+// Factory
+//
+
+void DoNothing(void* /*ignored*/) {}
+
+bool ParseUri(const grpc_uri* uri,
+              bool parse(const grpc_uri* uri, grpc_resolved_address* dst),
+              ServerAddressList* addresses) {
+  if (0 != strcmp(uri->authority, "")) {
+    gpr_log(GPR_ERROR, "authority-based URIs not supported by the %s scheme",
+            uri->scheme);
+    return false;
+  }
+  // Construct addresses.
+  grpc_slice path_slice =
+      grpc_slice_new(uri->path, strlen(uri->path), DoNothing);
+  grpc_slice_buffer path_parts;
+  grpc_slice_buffer_init(&path_parts);
+  grpc_slice_split(path_slice, ",", &path_parts);
+  bool errors_found = false;
+  for (size_t i = 0; i < path_parts.count; i++) {
+    grpc_uri ith_uri = *uri;
+    grpc_core::UniquePtr<char> part_str(
+        grpc_slice_to_c_string(path_parts.slices[i]));
+    ith_uri.path = part_str.get();
+    grpc_resolved_address addr;
+    if (!parse(&ith_uri, &addr)) {
+      errors_found = true;
+      break;
+    }
+    if (addresses != nullptr) {
+      addresses->emplace_back(addr, nullptr /* args */);
+    }
+  }
+  grpc_slice_buffer_destroy_internal(&path_parts);
+  grpc_slice_unref_internal(path_slice);
+  return !errors_found;
+}
+
+OrphanablePtr<Resolver> CreateSockaddrResolver(
+    ResolverArgs args,
+    bool parse(const grpc_uri* uri, grpc_resolved_address* dst)) {
+  ServerAddressList addresses;
+  if (!ParseUri(args.uri, parse, &addresses)) return nullptr;
+  // Instantiate resolver.
+  return MakeOrphanable<SockaddrResolver>(std::move(addresses),
+                                          std::move(args));
+}
+
+class IPv4ResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* uri) const override {
+    return ParseUri(uri, grpc_parse_ipv4, nullptr);
+  }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    return CreateSockaddrResolver(std::move(args), grpc_parse_ipv4);
+  }
+
+  const char* scheme() const override { return "ipv4"; }
+};
+
+class IPv6ResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* uri) const override {
+    return ParseUri(uri, grpc_parse_ipv6, nullptr);
+  }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    return CreateSockaddrResolver(std::move(args), grpc_parse_ipv6);
+  }
+
+  const char* scheme() const override { return "ipv6"; }
+};
+
+#ifdef GRPC_HAVE_UNIX_SOCKET
+class UnixResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* uri) const override {
+    return ParseUri(uri, grpc_parse_unix, nullptr);
+  }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    return CreateSockaddrResolver(std::move(args), grpc_parse_unix);
+  }
+
+  grpc_core::UniquePtr<char> GetDefaultAuthority(
+      grpc_uri* /*uri*/) const override {
+    return grpc_core::UniquePtr<char>(gpr_strdup("localhost"));
+  }
+
+  const char* scheme() const override { return "unix"; }
+};
+#endif  // GRPC_HAVE_UNIX_SOCKET
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_resolver_sockaddr_init() {
+  grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+      absl::make_unique<grpc_core::IPv4ResolverFactory>());
+  grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+      absl::make_unique<grpc_core::IPv6ResolverFactory>());
+#ifdef GRPC_HAVE_UNIX_SOCKET
+  grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+      absl::make_unique<grpc_core::UnixResolverFactory>());
+#endif
+}
+
+void grpc_resolver_sockaddr_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/xds/xds_resolver.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/xds/xds_resolver.cc
new file mode 100644
index 0000000..95fc153
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver/xds/xds_resolver.cc	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_xds_resolver_trace(false, "xds_resolver");
+
+namespace {
+
+//
+// XdsResolver
+//
+
+class XdsResolver : public Resolver {
+ public:
+  explicit XdsResolver(ResolverArgs args)
+      : Resolver(args.combiner, std::move(args.result_handler)),
+        args_(grpc_channel_args_copy(args.args)),
+        interested_parties_(args.pollset_set) {
+    char* path = args.uri->path;
+    if (path[0] == '/') ++path;
+    server_name_ = path;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_resolver_trace)) {
+      gpr_log(GPR_INFO, "[xds_resolver %p] created for server name %s", this,
+              server_name_.c_str());
+    }
+  }
+
+  ~XdsResolver() override {
+    grpc_channel_args_destroy(args_);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_resolver_trace)) {
+      gpr_log(GPR_INFO, "[xds_resolver %p] destroyed", this);
+    }
+  }
+
+  void StartLocked() override;
+
+  void ShutdownLocked() override {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_resolver_trace)) {
+      gpr_log(GPR_INFO, "[xds_resolver %p] shutting down", this);
+    }
+    xds_client_.reset();
+  }
+
+ private:
+  class ServiceConfigWatcher : public XdsClient::ServiceConfigWatcherInterface {
+   public:
+    explicit ServiceConfigWatcher(RefCountedPtr<XdsResolver> resolver)
+        : resolver_(std::move(resolver)) {}
+    void OnServiceConfigChanged(
+        RefCountedPtr<ServiceConfig> service_config) override;
+    void OnError(grpc_error* error) override;
+
+   private:
+    RefCountedPtr<XdsResolver> resolver_;
+  };
+
+  std::string server_name_;
+  const grpc_channel_args* args_;
+  grpc_pollset_set* interested_parties_;
+  OrphanablePtr<XdsClient> xds_client_;
+};
+
+void XdsResolver::ServiceConfigWatcher::OnServiceConfigChanged(
+    RefCountedPtr<ServiceConfig> service_config) {
+  if (resolver_->xds_client_ == nullptr) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_resolver_trace)) {
+    gpr_log(GPR_INFO, "[xds_resolver %p] received updated service config: %s",
+            resolver_.get(), service_config->json_string().c_str());
+  }
+  grpc_arg xds_client_arg = resolver_->xds_client_->MakeChannelArg();
+  Result result;
+  result.args =
+      grpc_channel_args_copy_and_add(resolver_->args_, &xds_client_arg, 1);
+  result.service_config = std::move(service_config);
+  resolver_->result_handler()->ReturnResult(std::move(result));
+}
+
+void XdsResolver::ServiceConfigWatcher::OnError(grpc_error* error) {
+  if (resolver_->xds_client_ == nullptr) return;
+  gpr_log(GPR_ERROR, "[xds_resolver %p] received error: %s", resolver_.get(),
+          grpc_error_string(error));
+  grpc_arg xds_client_arg = resolver_->xds_client_->MakeChannelArg();
+  Result result;
+  result.args =
+      grpc_channel_args_copy_and_add(resolver_->args_, &xds_client_arg, 1);
+  result.service_config_error = error;
+  resolver_->result_handler()->ReturnResult(std::move(result));
+}
+
+void XdsResolver::StartLocked() {
+  grpc_error* error = GRPC_ERROR_NONE;
+  xds_client_ = MakeOrphanable<XdsClient>(
+      combiner(), interested_parties_, server_name_,
+      absl::make_unique<ServiceConfigWatcher>(Ref()), *args_, &error);
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR,
+            "Failed to create xds client -- channel will remain in "
+            "TRANSIENT_FAILURE: %s",
+            grpc_error_string(error));
+    result_handler()->ReturnError(error);
+  }
+}
+
+//
+// Factory
+//
+
+class XdsResolverFactory : public ResolverFactory {
+ public:
+  bool IsValidUri(const grpc_uri* uri) const override {
+    if (GPR_UNLIKELY(0 != strcmp(uri->authority, ""))) {
+      gpr_log(GPR_ERROR, "URI authority not supported");
+      return false;
+    }
+    return true;
+  }
+
+  OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const override {
+    if (!IsValidUri(args.uri)) return nullptr;
+    return MakeOrphanable<XdsResolver>(std::move(args));
+  }
+
+  const char* scheme() const override { return "xds-experimental"; }
+};
+
+}  // namespace
+
+}  // namespace grpc_core
+
+void grpc_resolver_xds_init() {
+  grpc_core::ResolverRegistry::Builder::RegisterResolverFactory(
+      absl::make_unique<grpc_core::XdsResolverFactory>());
+}
+
+void grpc_resolver_xds_shutdown() {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_factory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_factory.h
new file mode 100644
index 0000000..b6a1e30
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_factory.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+
+struct ResolverArgs {
+  /// The parsed URI to resolve.
+  grpc_uri* uri = nullptr;
+  /// Channel args to be included in resolver results.
+  const grpc_channel_args* args = nullptr;
+  /// Used to drive I/O in the name resolution process.
+  grpc_pollset_set* pollset_set = nullptr;
+  /// The combiner under which all resolver calls will be run.
+  Combiner* combiner = nullptr;
+  /// The result handler to be used by the resolver.
+  std::unique_ptr<Resolver::ResultHandler> result_handler;
+};
+
+class ResolverFactory {
+ public:
+  /// Returns a bool indicating whether the input uri is valid to create a
+  /// resolver.
+  virtual bool IsValidUri(const grpc_uri* uri) const = 0;
+
+  /// Returns a new resolver instance.
+  virtual OrphanablePtr<Resolver> CreateResolver(ResolverArgs args) const = 0;
+
+  /// Returns a string representing the default authority to use for this
+  /// scheme.
+  virtual grpc_core::UniquePtr<char> GetDefaultAuthority(grpc_uri* uri) const {
+    const char* path = uri->path;
+    if (path[0] == '/') ++path;
+    return grpc_core::UniquePtr<char>(gpr_strdup(path));
+  }
+
+  /// Returns the URI scheme that this factory implements.
+  /// Caller does NOT take ownership of result.
+  virtual const char* scheme() const = 0;
+
+  virtual ~ResolverFactory() {}
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.cc
new file mode 100644
index 0000000..4e5bc59
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.cc	
@@ -0,0 +1,194 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+namespace grpc_core {
+
+namespace {
+
+class RegistryState {
+ public:
+  RegistryState() : default_prefix_(gpr_strdup("dns:///")) {}
+
+  void SetDefaultPrefix(const char* default_resolver_prefix) {
+    GPR_ASSERT(default_resolver_prefix != nullptr);
+    GPR_ASSERT(*default_resolver_prefix != '\0');
+    default_prefix_.reset(gpr_strdup(default_resolver_prefix));
+  }
+
+  void RegisterResolverFactory(std::unique_ptr<ResolverFactory> factory) {
+    for (size_t i = 0; i < factories_.size(); ++i) {
+      GPR_ASSERT(strcmp(factories_[i]->scheme(), factory->scheme()) != 0);
+    }
+    factories_.push_back(std::move(factory));
+  }
+
+  ResolverFactory* LookupResolverFactory(const char* scheme) const {
+    for (size_t i = 0; i < factories_.size(); ++i) {
+      if (strcmp(scheme, factories_[i]->scheme()) == 0) {
+        return factories_[i].get();
+      }
+    }
+    return nullptr;
+  }
+
+  // Returns the factory for the scheme of \a target.  If \a target does
+  // not parse as a URI, prepends \a default_prefix_ and tries again.
+  // If URI parsing is successful (in either attempt), sets \a uri to
+  // point to the parsed URI.
+  // If \a default_prefix_ needs to be prepended, sets \a canonical_target
+  // to the canonical target string.
+  ResolverFactory* FindResolverFactory(const char* target, grpc_uri** uri,
+                                       char** canonical_target) const {
+    GPR_ASSERT(uri != nullptr);
+    *uri = grpc_uri_parse(target, 1);
+    ResolverFactory* factory =
+        *uri == nullptr ? nullptr : LookupResolverFactory((*uri)->scheme);
+    if (factory == nullptr) {
+      grpc_uri_destroy(*uri);
+      gpr_asprintf(canonical_target, "%s%s", default_prefix_.get(), target);
+      *uri = grpc_uri_parse(*canonical_target, 1);
+      factory =
+          *uri == nullptr ? nullptr : LookupResolverFactory((*uri)->scheme);
+      if (factory == nullptr) {
+        grpc_uri_destroy(grpc_uri_parse(target, 0));
+        grpc_uri_destroy(grpc_uri_parse(*canonical_target, 0));
+        gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target,
+                *canonical_target);
+      }
+    }
+    return factory;
+  }
+
+ private:
+  // We currently support 10 factories without doing additional
+  // allocation.  This number could be raised if there is a case where
+  // more factories are needed and the additional allocations are
+  // hurting performance (which is unlikely, since these allocations
+  // only occur at gRPC initialization time).
+  InlinedVector<std::unique_ptr<ResolverFactory>, 10> factories_;
+  grpc_core::UniquePtr<char> default_prefix_;
+};
+
+static RegistryState* g_state = nullptr;
+
+}  // namespace
+
+//
+// ResolverRegistry::Builder
+//
+
+void ResolverRegistry::Builder::InitRegistry() {
+  if (g_state == nullptr) g_state = new RegistryState();
+}
+
+void ResolverRegistry::Builder::ShutdownRegistry() {
+  delete g_state;
+  g_state = nullptr;
+}
+
+void ResolverRegistry::Builder::SetDefaultPrefix(
+    const char* default_resolver_prefix) {
+  InitRegistry();
+  g_state->SetDefaultPrefix(default_resolver_prefix);
+}
+
+void ResolverRegistry::Builder::RegisterResolverFactory(
+    std::unique_ptr<ResolverFactory> factory) {
+  InitRegistry();
+  g_state->RegisterResolverFactory(std::move(factory));
+}
+
+//
+// ResolverRegistry
+//
+
+ResolverFactory* ResolverRegistry::LookupResolverFactory(const char* scheme) {
+  GPR_ASSERT(g_state != nullptr);
+  return g_state->LookupResolverFactory(scheme);
+}
+
+bool ResolverRegistry::IsValidTarget(const char* target) {
+  grpc_uri* uri = nullptr;
+  char* canonical_target = nullptr;
+  ResolverFactory* factory =
+      g_state->FindResolverFactory(target, &uri, &canonical_target);
+  bool result = factory == nullptr ? false : factory->IsValidUri(uri);
+  grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
+  return result;
+}
+
+OrphanablePtr<Resolver> ResolverRegistry::CreateResolver(
+    const char* target, const grpc_channel_args* args,
+    grpc_pollset_set* pollset_set, Combiner* combiner,
+    std::unique_ptr<Resolver::ResultHandler> result_handler) {
+  GPR_ASSERT(g_state != nullptr);
+  grpc_uri* uri = nullptr;
+  char* canonical_target = nullptr;
+  ResolverFactory* factory =
+      g_state->FindResolverFactory(target, &uri, &canonical_target);
+  ResolverArgs resolver_args;
+  resolver_args.uri = uri;
+  resolver_args.args = args;
+  resolver_args.pollset_set = pollset_set;
+  resolver_args.combiner = combiner;
+  resolver_args.result_handler = std::move(result_handler);
+  OrphanablePtr<Resolver> resolver =
+      factory == nullptr ? nullptr
+                         : factory->CreateResolver(std::move(resolver_args));
+  grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
+  return resolver;
+}
+
+grpc_core::UniquePtr<char> ResolverRegistry::GetDefaultAuthority(
+    const char* target) {
+  GPR_ASSERT(g_state != nullptr);
+  grpc_uri* uri = nullptr;
+  char* canonical_target = nullptr;
+  ResolverFactory* factory =
+      g_state->FindResolverFactory(target, &uri, &canonical_target);
+  grpc_core::UniquePtr<char> authority =
+      factory == nullptr ? nullptr : factory->GetDefaultAuthority(uri);
+  grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
+  return authority;
+}
+
+grpc_core::UniquePtr<char> ResolverRegistry::AddDefaultPrefixIfNeeded(
+    const char* target) {
+  GPR_ASSERT(g_state != nullptr);
+  grpc_uri* uri = nullptr;
+  char* canonical_target = nullptr;
+  g_state->FindResolverFactory(target, &uri, &canonical_target);
+  grpc_uri_destroy(uri);
+  return grpc_core::UniquePtr<char>(
+      canonical_target == nullptr ? gpr_strdup(target) : canonical_target);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.h
new file mode 100644
index 0000000..718750a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_registry.h	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver_factory.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+namespace grpc_core {
+
+class ResolverRegistry {
+ public:
+  /// Methods used to create and populate the ResolverRegistry.
+  /// NOT THREAD SAFE -- to be used only during global gRPC
+  /// initialization and shutdown.
+  class Builder {
+   public:
+    /// Global initialization and shutdown hooks.
+    static void InitRegistry();
+    static void ShutdownRegistry();
+
+    /// Sets the default URI prefix to \a default_prefix.
+    /// Calls InitRegistry() if it has not already been called.
+    static void SetDefaultPrefix(const char* default_prefix);
+
+    /// Registers a resolver factory.  The factory will be used to create a
+    /// resolver for any URI whose scheme matches that of the factory.
+    /// Calls InitRegistry() if it has not already been called.
+    static void RegisterResolverFactory(
+        std::unique_ptr<ResolverFactory> factory);
+  };
+
+  /// Checks whether the user input \a target is valid to create a resolver.
+  static bool IsValidTarget(const char* target);
+
+  /// Creates a resolver given \a target.
+  /// First tries to parse \a target as a URI. If this succeeds, tries
+  /// to locate a registered resolver factory based on the URI scheme.
+  /// If parsing fails or there is no factory for the URI's scheme,
+  /// prepends default_prefix to target and tries again.
+  /// If a resolver factory is found, uses it to instantiate a resolver and
+  /// returns it; otherwise, returns nullptr.
+  /// \a args, \a pollset_set, and \a combiner are passed to the factory's
+  /// \a CreateResolver() method.
+  /// \a args are the channel args to be included in resolver results.
+  /// \a pollset_set is used to drive I/O in the name resolution process.
+  /// \a combiner is the combiner under which all resolver calls will be run.
+  /// \a result_handler is used to return results from the resolver.
+  static OrphanablePtr<Resolver> CreateResolver(
+      const char* target, const grpc_channel_args* args,
+      grpc_pollset_set* pollset_set, Combiner* combiner,
+      std::unique_ptr<Resolver::ResultHandler> result_handler);
+
+  /// Returns the default authority to pass from a client for \a target.
+  static grpc_core::UniquePtr<char> GetDefaultAuthority(const char* target);
+
+  /// Returns \a target with the default prefix prepended, if needed.
+  static grpc_core::UniquePtr<char> AddDefaultPrefixIfNeeded(
+      const char* target);
+
+  /// Returns the resolver factory for \a scheme.
+  /// Caller does NOT own the return value.
+  static ResolverFactory* LookupResolverFactory(const char* scheme);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.cc
new file mode 100644
index 0000000..080ecd3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.cc	
@@ -0,0 +1,443 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolver_result_parsing.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/optional.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+// As per the retry design, we do not allow more than 5 retry attempts.
+#define MAX_MAX_RETRY_ATTEMPTS 5
+
+namespace grpc_core {
+namespace internal {
+
+namespace {
+size_t g_client_channel_service_config_parser_index;
+}
+
+size_t ClientChannelServiceConfigParser::ParserIndex() {
+  return g_client_channel_service_config_parser_index;
+}
+
+void ClientChannelServiceConfigParser::Register() {
+  g_client_channel_service_config_parser_index = ServiceConfig::RegisterParser(
+      absl::make_unique<ClientChannelServiceConfigParser>());
+}
+
+namespace {
+
+// Parses a JSON field of the form generated for a google.proto.Duration
+// proto message, as per:
+//   https://developers.google.com/protocol-buffers/docs/proto3#json
+bool ParseDuration(const Json& field, grpc_millis* duration) {
+  if (field.type() != Json::Type::STRING) return false;
+  size_t len = field.string_value().size();
+  if (field.string_value()[len - 1] != 's') return false;
+  grpc_core::UniquePtr<char> buf(gpr_strdup(field.string_value().c_str()));
+  *(buf.get() + len - 1) = '\0';  // Remove trailing 's'.
+  char* decimal_point = strchr(buf.get(), '.');
+  int nanos = 0;
+  if (decimal_point != nullptr) {
+    *decimal_point = '\0';
+    nanos = gpr_parse_nonnegative_int(decimal_point + 1);
+    if (nanos == -1) {
+      return false;
+    }
+    int num_digits = static_cast<int>(strlen(decimal_point + 1));
+    if (num_digits > 9) {  // We don't accept greater precision than nanos.
+      return false;
+    }
+    for (int i = 0; i < (9 - num_digits); ++i) {
+      nanos *= 10;
+    }
+  }
+  int seconds =
+      decimal_point == buf.get() ? 0 : gpr_parse_nonnegative_int(buf.get());
+  if (seconds == -1) return false;
+  *duration = seconds * GPR_MS_PER_SEC + nanos / GPR_NS_PER_MS;
+  return true;
+}
+
+std::unique_ptr<ClientChannelMethodParsedConfig::RetryPolicy> ParseRetryPolicy(
+    const Json& json, grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  auto retry_policy =
+      absl::make_unique<ClientChannelMethodParsedConfig::RetryPolicy>();
+  if (json.type() != Json::Type::OBJECT) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryPolicy error:should be of type object");
+    return nullptr;
+  }
+  std::vector<grpc_error*> error_list;
+  // Parse maxAttempts.
+  auto it = json.object_value().find("maxAttempts");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::NUMBER) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:maxAttempts error:should be of type number"));
+    } else {
+      retry_policy->max_attempts =
+          gpr_parse_nonnegative_int(it->second.string_value().c_str());
+      if (retry_policy->max_attempts <= 1) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:maxAttempts error:should be at least 2"));
+      } else if (retry_policy->max_attempts > MAX_MAX_RETRY_ATTEMPTS) {
+        gpr_log(GPR_ERROR,
+                "service config: clamped retryPolicy.maxAttempts at %d",
+                MAX_MAX_RETRY_ATTEMPTS);
+        retry_policy->max_attempts = MAX_MAX_RETRY_ATTEMPTS;
+      }
+    }
+  }
+  // Parse initialBackoff.
+  it = json.object_value().find("initialBackoff");
+  if (it != json.object_value().end()) {
+    if (!ParseDuration(it->second, &retry_policy->initial_backoff)) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:initialBackoff error:Failed to parse"));
+    } else if (retry_policy->initial_backoff == 0) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:initialBackoff error:must be greater than 0"));
+    }
+  }
+  // Parse maxBackoff.
+  it = json.object_value().find("maxBackoff");
+  if (it != json.object_value().end()) {
+    if (!ParseDuration(it->second, &retry_policy->max_backoff)) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:maxBackoff error:failed to parse"));
+    } else if (retry_policy->max_backoff == 0) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:maxBackoff error:should be greater than 0"));
+    }
+  }
+  // Parse backoffMultiplier.
+  it = json.object_value().find("backoffMultiplier");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::NUMBER) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:backoffMultiplier error:should be of type number"));
+    } else {
+      if (sscanf(it->second.string_value().c_str(), "%f",
+                 &retry_policy->backoff_multiplier) != 1) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:backoffMultiplier error:failed to parse"));
+      } else if (retry_policy->backoff_multiplier <= 0) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:backoffMultiplier error:should be greater than 0"));
+      }
+    }
+  }
+  // Parse retryableStatusCodes.
+  it = json.object_value().find("retryableStatusCodes");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::ARRAY) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:retryableStatusCodes error:should be of type array"));
+    } else {
+      for (const Json& element : it->second.array_value()) {
+        if (element.type() != Json::Type::STRING) {
+          error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+              "field:retryableStatusCodes error:status codes should be of type "
+              "string"));
+          continue;
+        }
+        grpc_status_code status;
+        if (!grpc_status_code_from_string(element.string_value().c_str(),
+                                          &status)) {
+          error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+              "field:retryableStatusCodes error:failed to parse status code"));
+          continue;
+        }
+        retry_policy->retryable_status_codes.Add(status);
+      }
+      if (retry_policy->retryable_status_codes.Empty()) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:retryableStatusCodes error:should be non-empty"));
+      };
+    }
+  }
+  // Make sure required fields are set.
+  if (error_list.empty()) {
+    if (retry_policy->max_attempts == 0 || retry_policy->initial_backoff == 0 ||
+        retry_policy->max_backoff == 0 ||
+        retry_policy->backoff_multiplier == 0 ||
+        retry_policy->retryable_status_codes.Empty()) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:retryPolicy error:Missing required field(s)");
+      return nullptr;
+    }
+  }
+  *error = GRPC_ERROR_CREATE_FROM_VECTOR("retryPolicy", &error_list);
+  return *error == GRPC_ERROR_NONE ? std::move(retry_policy) : nullptr;
+}
+
+grpc_error* ParseRetryThrottling(
+    const Json& json,
+    ClientChannelGlobalParsedConfig::RetryThrottling* retry_throttling) {
+  if (json.type() != Json::Type::OBJECT) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryThrottling error:Type should be object");
+  }
+  std::vector<grpc_error*> error_list;
+  // Parse maxTokens.
+  auto it = json.object_value().find("maxTokens");
+  if (it == json.object_value().end()) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryThrottling field:maxTokens error:Not found"));
+  } else if (it->second.type() != Json::Type::NUMBER) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryThrottling field:maxTokens error:Type should be "
+        "number"));
+  } else {
+    retry_throttling->max_milli_tokens =
+        gpr_parse_nonnegative_int(it->second.string_value().c_str()) * 1000;
+    if (retry_throttling->max_milli_tokens <= 0) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:retryThrottling field:maxTokens error:should be "
+          "greater than zero"));
+    }
+  }
+  // Parse tokenRatio.
+  it = json.object_value().find("tokenRatio");
+  if (it == json.object_value().end()) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryThrottling field:tokenRatio error:Not found"));
+  } else if (it->second.type() != Json::Type::NUMBER) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:retryThrottling field:tokenRatio error:type should be "
+        "number"));
+  } else {
+    // We support up to 3 decimal digits.
+    size_t whole_len = it->second.string_value().size();
+    const char* value = it->second.string_value().c_str();
+    uint32_t multiplier = 1;
+    uint32_t decimal_value = 0;
+    const char* decimal_point = strchr(value, '.');
+    if (decimal_point != nullptr) {
+      whole_len = static_cast<size_t>(decimal_point - value);
+      multiplier = 1000;
+      size_t decimal_len = strlen(decimal_point + 1);
+      if (decimal_len > 3) decimal_len = 3;
+      if (!gpr_parse_bytes_to_uint32(decimal_point + 1, decimal_len,
+                                     &decimal_value)) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:retryThrottling field:tokenRatio error:Failed "
+            "parsing"));
+        return GRPC_ERROR_CREATE_FROM_VECTOR("retryPolicy", &error_list);
+      }
+      uint32_t decimal_multiplier = 1;
+      for (size_t i = 0; i < (3 - decimal_len); ++i) {
+        decimal_multiplier *= 10;
+      }
+      decimal_value *= decimal_multiplier;
+    }
+    uint32_t whole_value;
+    if (!gpr_parse_bytes_to_uint32(value, whole_len, &whole_value)) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:retryThrottling field:tokenRatio error:Failed "
+          "parsing"));
+      return GRPC_ERROR_CREATE_FROM_VECTOR("retryPolicy", &error_list);
+    }
+    retry_throttling->milli_token_ratio =
+        static_cast<int>((whole_value * multiplier) + decimal_value);
+    if (retry_throttling->milli_token_ratio <= 0) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:retryThrottling field:tokenRatio error:value should "
+          "be greater than 0"));
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("retryPolicy", &error_list);
+}
+
+const char* ParseHealthCheckConfig(const Json& field, grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  const char* service_name = nullptr;
+  if (field.type() != Json::Type::OBJECT) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:healthCheckConfig error:should be of type object");
+    return nullptr;
+  }
+  std::vector<grpc_error*> error_list;
+  auto it = field.object_value().find("serviceName");
+  if (it != field.object_value().end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:serviceName error:should be of type string"));
+    } else {
+      service_name = it->second.string_value().c_str();
+    }
+  }
+  if (!error_list.empty()) {
+    return nullptr;
+  }
+  *error =
+      GRPC_ERROR_CREATE_FROM_VECTOR("field:healthCheckConfig", &error_list);
+  return service_name;
+}
+
+}  // namespace
+
+std::unique_ptr<ServiceConfig::ParsedConfig>
+ClientChannelServiceConfigParser::ParseGlobalParams(const Json& json,
+                                                    grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  std::vector<grpc_error*> error_list;
+  RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config;
+  grpc_core::UniquePtr<char> lb_policy_name;
+  Optional<ClientChannelGlobalParsedConfig::RetryThrottling> retry_throttling;
+  const char* health_check_service_name = nullptr;
+  // Parse LB config.
+  auto it = json.object_value().find("loadBalancingConfig");
+  if (it != json.object_value().end()) {
+    grpc_error* parse_error = GRPC_ERROR_NONE;
+    parsed_lb_config = LoadBalancingPolicyRegistry::ParseLoadBalancingConfig(
+        it->second, &parse_error);
+    if (parsed_lb_config == nullptr) {
+      std::vector<grpc_error*> lb_errors;
+      lb_errors.push_back(parse_error);
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_VECTOR(
+          "field:loadBalancingConfig", &lb_errors));
+    }
+  }
+  // Parse deprecated LB policy.
+  it = json.object_value().find("loadBalancingPolicy");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:loadBalancingPolicy error:type should be string"));
+    } else {
+      lb_policy_name.reset(gpr_strdup(it->second.string_value().c_str()));
+      char* lb_policy = lb_policy_name.get();
+      if (lb_policy != nullptr) {
+        for (size_t i = 0; i < strlen(lb_policy); ++i) {
+          lb_policy[i] = tolower(lb_policy[i]);
+        }
+      }
+      bool requires_config = false;
+      if (!LoadBalancingPolicyRegistry::LoadBalancingPolicyExists(
+              lb_policy, &requires_config)) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:loadBalancingPolicy error:Unknown lb policy"));
+      } else if (requires_config) {
+        char* error_msg;
+        gpr_asprintf(&error_msg,
+                     "field:loadBalancingPolicy error:%s requires a config. "
+                     "Please use loadBalancingConfig instead.",
+                     lb_policy);
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg));
+        gpr_free(error_msg);
+      }
+    }
+  }
+  // Parse retry throttling.
+  it = json.object_value().find("retryThrottling");
+  if (it != json.object_value().end()) {
+    ClientChannelGlobalParsedConfig::RetryThrottling data;
+    grpc_error* parsing_error = ParseRetryThrottling(it->second, &data);
+    if (parsing_error != GRPC_ERROR_NONE) {
+      error_list.push_back(parsing_error);
+    } else {
+      retry_throttling.emplace(data);
+    }
+  }
+  // Parse health check config.
+  it = json.object_value().find("healthCheckConfig");
+  if (it != json.object_value().end()) {
+    grpc_error* parsing_error = GRPC_ERROR_NONE;
+    health_check_service_name =
+        ParseHealthCheckConfig(it->second, &parsing_error);
+    if (parsing_error != GRPC_ERROR_NONE) {
+      error_list.push_back(parsing_error);
+    }
+  }
+  *error = GRPC_ERROR_CREATE_FROM_VECTOR("Client channel global parser",
+                                         &error_list);
+  if (*error == GRPC_ERROR_NONE) {
+    return absl::make_unique<ClientChannelGlobalParsedConfig>(
+        std::move(parsed_lb_config), std::move(lb_policy_name),
+        retry_throttling, health_check_service_name);
+  }
+  return nullptr;
+}
+
+std::unique_ptr<ServiceConfig::ParsedConfig>
+ClientChannelServiceConfigParser::ParsePerMethodParams(const Json& json,
+                                                       grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  std::vector<grpc_error*> error_list;
+  Optional<bool> wait_for_ready;
+  grpc_millis timeout = 0;
+  std::unique_ptr<ClientChannelMethodParsedConfig::RetryPolicy> retry_policy;
+  // Parse waitForReady.
+  auto it = json.object_value().find("waitForReady");
+  if (it != json.object_value().end()) {
+    if (it->second.type() == Json::Type::JSON_TRUE) {
+      wait_for_ready.emplace(true);
+    } else if (it->second.type() == Json::Type::JSON_FALSE) {
+      wait_for_ready.emplace(false);
+    } else {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:waitForReady error:Type should be true/false"));
+    }
+  }
+  // Parse timeout.
+  it = json.object_value().find("timeout");
+  if (it != json.object_value().end()) {
+    if (!ParseDuration(it->second, &timeout)) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:timeout error:Failed parsing"));
+    };
+  }
+  // Parse retry policy.
+  it = json.object_value().find("retryPolicy");
+  if (it != json.object_value().end()) {
+    grpc_error* error = GRPC_ERROR_NONE;
+    retry_policy = ParseRetryPolicy(it->second, &error);
+    if (retry_policy == nullptr) {
+      error_list.push_back(error);
+    }
+  }
+  *error = GRPC_ERROR_CREATE_FROM_VECTOR("Client channel parser", &error_list);
+  if (*error == GRPC_ERROR_NONE) {
+    return absl::make_unique<ClientChannelMethodParsedConfig>(
+        timeout, wait_for_ready, std::move(retry_policy));
+  }
+  return nullptr;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.h
new file mode 100644
index 0000000..27d7f6f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolver_result_parsing.h	
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gprpp/optional.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/exec_ctx.h"  // for grpc_millis
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+
+namespace grpc_core {
+namespace internal {
+
+class ClientChannelGlobalParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct RetryThrottling {
+    intptr_t max_milli_tokens = 0;
+    intptr_t milli_token_ratio = 0;
+  };
+
+  ClientChannelGlobalParsedConfig(
+      RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config,
+      grpc_core::UniquePtr<char> parsed_deprecated_lb_policy,
+      const Optional<RetryThrottling>& retry_throttling,
+      const char* health_check_service_name)
+      : parsed_lb_config_(std::move(parsed_lb_config)),
+        parsed_deprecated_lb_policy_(std::move(parsed_deprecated_lb_policy)),
+        retry_throttling_(retry_throttling),
+        health_check_service_name_(health_check_service_name) {}
+
+  Optional<RetryThrottling> retry_throttling() const {
+    return retry_throttling_;
+  }
+
+  RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config() const {
+    return parsed_lb_config_;
+  }
+
+  const char* parsed_deprecated_lb_policy() const {
+    return parsed_deprecated_lb_policy_.get();
+  }
+
+  const char* health_check_service_name() const {
+    return health_check_service_name_;
+  }
+
+ private:
+  RefCountedPtr<LoadBalancingPolicy::Config> parsed_lb_config_;
+  grpc_core::UniquePtr<char> parsed_deprecated_lb_policy_;
+  Optional<RetryThrottling> retry_throttling_;
+  const char* health_check_service_name_;
+};
+
+class ClientChannelMethodParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct RetryPolicy {
+    int max_attempts = 0;
+    grpc_millis initial_backoff = 0;
+    grpc_millis max_backoff = 0;
+    float backoff_multiplier = 0;
+    StatusCodeSet retryable_status_codes;
+  };
+
+  ClientChannelMethodParsedConfig(grpc_millis timeout,
+                                  const Optional<bool>& wait_for_ready,
+                                  std::unique_ptr<RetryPolicy> retry_policy)
+      : timeout_(timeout),
+        wait_for_ready_(wait_for_ready),
+        retry_policy_(std::move(retry_policy)) {}
+
+  grpc_millis timeout() const { return timeout_; }
+
+  Optional<bool> wait_for_ready() const { return wait_for_ready_; }
+
+  const RetryPolicy* retry_policy() const { return retry_policy_.get(); }
+
+ private:
+  grpc_millis timeout_ = 0;
+  Optional<bool> wait_for_ready_;
+  std::unique_ptr<RetryPolicy> retry_policy_;
+};
+
+class ClientChannelServiceConfigParser : public ServiceConfig::Parser {
+ public:
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParseGlobalParams(
+      const Json& json, grpc_error** error) override;
+
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParsePerMethodParams(
+      const Json& json, grpc_error** error) override;
+
+  static size_t ParserIndex();
+  static void Register();
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_RESULT_PARSING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.cc
new file mode 100644
index 0000000..b05590d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.cc	
@@ -0,0 +1,359 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/resolving_lb_policy.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/backup_poller.h"
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/lb_policy/child_policy_handler.h"
+#include "src/core/ext/filters/client_channel/lb_policy_registry.h"
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/filters/deadline/deadline_filter.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/status_metadata.h"
+
+namespace grpc_core {
+
+//
+// ResolvingLoadBalancingPolicy::ResolverResultHandler
+//
+
+class ResolvingLoadBalancingPolicy::ResolverResultHandler
+    : public Resolver::ResultHandler {
+ public:
+  explicit ResolverResultHandler(
+      RefCountedPtr<ResolvingLoadBalancingPolicy> parent)
+      : parent_(std::move(parent)) {}
+
+  ~ResolverResultHandler() {
+    if (GRPC_TRACE_FLAG_ENABLED(*(parent_->tracer_))) {
+      gpr_log(GPR_INFO, "resolving_lb=%p: resolver shutdown complete",
+              parent_.get());
+    }
+  }
+
+  void ReturnResult(Resolver::Result result) override {
+    parent_->OnResolverResultChangedLocked(std::move(result));
+  }
+
+  void ReturnError(grpc_error* error) override {
+    parent_->OnResolverError(error);
+  }
+
+ private:
+  RefCountedPtr<ResolvingLoadBalancingPolicy> parent_;
+};
+
+//
+// ResolvingLoadBalancingPolicy::ResolvingControlHelper
+//
+
+class ResolvingLoadBalancingPolicy::ResolvingControlHelper
+    : public LoadBalancingPolicy::ChannelControlHelper {
+ public:
+  explicit ResolvingControlHelper(
+      RefCountedPtr<ResolvingLoadBalancingPolicy> parent)
+      : parent_(std::move(parent)) {}
+
+  RefCountedPtr<SubchannelInterface> CreateSubchannel(
+      const grpc_channel_args& args) override {
+    if (parent_->resolver_ == nullptr) return nullptr;  // Shutting down.
+    return parent_->channel_control_helper()->CreateSubchannel(args);
+  }
+
+  void UpdateState(grpc_connectivity_state state,
+                   std::unique_ptr<SubchannelPicker> picker) override {
+    if (parent_->resolver_ == nullptr) return;  // Shutting down.
+    parent_->channel_control_helper()->UpdateState(state, std::move(picker));
+  }
+
+  void RequestReresolution() override {
+    if (parent_->resolver_ == nullptr) return;  // Shutting down.
+    if (GRPC_TRACE_FLAG_ENABLED(*(parent_->tracer_))) {
+      gpr_log(GPR_INFO, "resolving_lb=%p: started name re-resolving",
+              parent_.get());
+    }
+    parent_->resolver_->RequestReresolutionLocked();
+  }
+
+  void AddTraceEvent(TraceSeverity severity, StringView message) override {
+    if (parent_->resolver_ == nullptr) return;  // Shutting down.
+    parent_->channel_control_helper()->AddTraceEvent(severity, message);
+  }
+
+ private:
+  RefCountedPtr<ResolvingLoadBalancingPolicy> parent_;
+};
+
+//
+// ResolvingLoadBalancingPolicy
+//
+
+ResolvingLoadBalancingPolicy::ResolvingLoadBalancingPolicy(
+    Args args, TraceFlag* tracer, grpc_core::UniquePtr<char> target_uri,
+    ProcessResolverResultCallback process_resolver_result,
+    void* process_resolver_result_user_data)
+    : LoadBalancingPolicy(std::move(args)),
+      tracer_(tracer),
+      target_uri_(std::move(target_uri)),
+      process_resolver_result_(process_resolver_result),
+      process_resolver_result_user_data_(process_resolver_result_user_data) {
+  GPR_ASSERT(process_resolver_result != nullptr);
+  resolver_ = ResolverRegistry::CreateResolver(
+      target_uri_.get(), args.args, interested_parties(), combiner(),
+      absl::make_unique<ResolverResultHandler>(Ref()));
+  // Since the validity of args has been checked when create the channel,
+  // CreateResolver() must return a non-null result.
+  GPR_ASSERT(resolver_ != nullptr);
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "resolving_lb=%p: starting name resolution", this);
+  }
+  channel_control_helper()->UpdateState(GRPC_CHANNEL_CONNECTING,
+                                        absl::make_unique<QueuePicker>(Ref()));
+  resolver_->StartLocked();
+}
+
+ResolvingLoadBalancingPolicy::~ResolvingLoadBalancingPolicy() {
+  GPR_ASSERT(resolver_ == nullptr);
+  GPR_ASSERT(lb_policy_ == nullptr);
+}
+
+void ResolvingLoadBalancingPolicy::ShutdownLocked() {
+  if (resolver_ != nullptr) {
+    resolver_.reset();
+    if (lb_policy_ != nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+        gpr_log(GPR_INFO, "resolving_lb=%p: shutting down lb_policy=%p", this,
+                lb_policy_.get());
+      }
+      grpc_pollset_set_del_pollset_set(lb_policy_->interested_parties(),
+                                       interested_parties());
+      lb_policy_.reset();
+    }
+  }
+}
+
+void ResolvingLoadBalancingPolicy::ExitIdleLocked() {
+  if (lb_policy_ != nullptr) lb_policy_->ExitIdleLocked();
+}
+
+void ResolvingLoadBalancingPolicy::ResetBackoffLocked() {
+  if (resolver_ != nullptr) {
+    resolver_->ResetBackoffLocked();
+    resolver_->RequestReresolutionLocked();
+  }
+  if (lb_policy_ != nullptr) lb_policy_->ResetBackoffLocked();
+}
+
+void ResolvingLoadBalancingPolicy::OnResolverError(grpc_error* error) {
+  if (resolver_ == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "resolving_lb=%p: resolver transient failure: %s", this,
+            grpc_error_string(error));
+  }
+  // If we already have an LB policy from a previous resolution
+  // result, then we continue to let it set the connectivity state.
+  // Otherwise, we go into TRANSIENT_FAILURE.
+  if (lb_policy_ == nullptr) {
+    grpc_error* state_error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Resolver transient failure", &error, 1);
+    channel_control_helper()->UpdateState(
+        GRPC_CHANNEL_TRANSIENT_FAILURE,
+        absl::make_unique<TransientFailurePicker>(state_error));
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void ResolvingLoadBalancingPolicy::CreateOrUpdateLbPolicyLocked(
+    RefCountedPtr<LoadBalancingPolicy::Config> lb_policy_config,
+    Resolver::Result result) {
+  // Construct update.
+  UpdateArgs update_args;
+  update_args.addresses = std::move(result.addresses);
+  update_args.config = std::move(lb_policy_config);
+  // TODO(roth): Once channel args is converted to C++, use std::move() here.
+  update_args.args = result.args;
+  result.args = nullptr;
+  // Create policy if needed.
+  if (lb_policy_ == nullptr) {
+    lb_policy_ = CreateLbPolicyLocked(*update_args.args);
+  }
+  // Update the policy.
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "resolving_lb=%p: Updating child policy %p", this,
+            lb_policy_.get());
+  }
+  lb_policy_->UpdateLocked(std::move(update_args));
+}
+
+// Creates a new LB policy.
+// Updates trace_strings to indicate what was done.
+OrphanablePtr<LoadBalancingPolicy>
+ResolvingLoadBalancingPolicy::CreateLbPolicyLocked(
+    const grpc_channel_args& args) {
+  LoadBalancingPolicy::Args lb_policy_args;
+  lb_policy_args.combiner = combiner();
+  lb_policy_args.channel_control_helper =
+      absl::make_unique<ResolvingControlHelper>(Ref());
+  lb_policy_args.args = &args;
+  OrphanablePtr<LoadBalancingPolicy> lb_policy =
+      MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args), tracer_);
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "resolving_lb=%p: created new LB policy %p", this,
+            lb_policy.get());
+  }
+  grpc_pollset_set_add_pollset_set(lb_policy->interested_parties(),
+                                   interested_parties());
+  return lb_policy;
+}
+
+void ResolvingLoadBalancingPolicy::MaybeAddTraceMessagesForAddressChangesLocked(
+    bool resolution_contains_addresses, TraceStringVector* trace_strings) {
+  if (!resolution_contains_addresses &&
+      previous_resolution_contained_addresses_) {
+    trace_strings->push_back(gpr_strdup("Address list became empty"));
+  } else if (resolution_contains_addresses &&
+             !previous_resolution_contained_addresses_) {
+    trace_strings->push_back(gpr_strdup("Address list became non-empty"));
+  }
+  previous_resolution_contained_addresses_ = resolution_contains_addresses;
+}
+
+void ResolvingLoadBalancingPolicy::ConcatenateAndAddChannelTraceLocked(
+    TraceStringVector* trace_strings) const {
+  if (!trace_strings->empty()) {
+    gpr_strvec v;
+    gpr_strvec_init(&v);
+    gpr_strvec_add(&v, gpr_strdup("Resolution event: "));
+    bool is_first = 1;
+    for (size_t i = 0; i < trace_strings->size(); ++i) {
+      if (!is_first) gpr_strvec_add(&v, gpr_strdup(", "));
+      is_first = false;
+      gpr_strvec_add(&v, (*trace_strings)[i]);
+    }
+    size_t len = 0;
+    grpc_core::UniquePtr<char> message(gpr_strvec_flatten(&v, &len));
+    channel_control_helper()->AddTraceEvent(ChannelControlHelper::TRACE_INFO,
+                                            StringView(message.get()));
+    gpr_strvec_destroy(&v);
+  }
+}
+
+void ResolvingLoadBalancingPolicy::OnResolverResultChangedLocked(
+    Resolver::Result result) {
+  // Handle race conditions.
+  if (resolver_ == nullptr) return;
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer_)) {
+    gpr_log(GPR_INFO, "resolving_lb=%p: got resolver result", this);
+  }
+  // We only want to trace the address resolution in the follow cases:
+  // (a) Address resolution resulted in service config change.
+  // (b) Address resolution that causes number of backends to go from
+  //     zero to non-zero.
+  // (c) Address resolution that causes number of backends to go from
+  //     non-zero to zero.
+  // (d) Address resolution that causes a new LB policy to be created.
+  //
+  // We track a list of strings to eventually be concatenated and traced.
+  TraceStringVector trace_strings;
+  const bool resolution_contains_addresses = result.addresses.size() > 0;
+  // Process the resolver result.
+  RefCountedPtr<LoadBalancingPolicy::Config> lb_policy_config;
+  bool service_config_changed = false;
+  char* service_config_error_string = nullptr;
+  if (process_resolver_result_ != nullptr) {
+    grpc_error* service_config_error = GRPC_ERROR_NONE;
+    bool no_valid_service_config = false;
+    service_config_changed = process_resolver_result_(
+        process_resolver_result_user_data_, result, &lb_policy_config,
+        &service_config_error, &no_valid_service_config);
+    if (service_config_error != GRPC_ERROR_NONE) {
+      service_config_error_string =
+          gpr_strdup(grpc_error_string(service_config_error));
+      if (no_valid_service_config) {
+        // We received an invalid service config and we don't have a
+        // fallback service config.
+        OnResolverError(service_config_error);
+      } else {
+        GRPC_ERROR_UNREF(service_config_error);
+      }
+    }
+  } else {
+    lb_policy_config = child_lb_config_;
+  }
+  if (lb_policy_config != nullptr) {
+    // Create or update LB policy, as needed.
+    CreateOrUpdateLbPolicyLocked(std::move(lb_policy_config),
+                                 std::move(result));
+  }
+  // Add channel trace event.
+  if (service_config_changed) {
+    // TODO(ncteisen): might be worth somehow including a snippet of the
+    // config in the trace, at the risk of bloating the trace logs.
+    trace_strings.push_back(gpr_strdup("Service config changed"));
+  }
+  if (service_config_error_string != nullptr) {
+    trace_strings.push_back(service_config_error_string);
+    service_config_error_string = nullptr;
+  }
+  MaybeAddTraceMessagesForAddressChangesLocked(resolution_contains_addresses,
+                                               &trace_strings);
+  ConcatenateAndAddChannelTraceLocked(&trace_strings);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.h
new file mode 100644
index 0000000..ba53368
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/resolving_lb_policy.h	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy.h"
+#include "src/core/ext/filters/client_channel/lb_policy_factory.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata_batch.h"
+
+namespace grpc_core {
+
+// An LB policy that wraps a resolver and a child LB policy to make use
+// of the addresses returned by the resolver.
+//
+// When used in the client_channel code, the resolver will attempt to
+// fetch the service config, and the child LB policy name and config
+// will be determined based on the service config.
+//
+// When used in an LB policy implementation that needs to do another
+// round of resolution before creating a child policy, the resolver does
+// not fetch the service config, and the caller must pre-determine the
+// child LB policy and config to use.
+class ResolvingLoadBalancingPolicy : public LoadBalancingPolicy {
+ public:
+  // Synchronous callback that takes the resolver result and sets
+  // lb_policy_config to point to the right data.
+  // Returns true if the service config has changed since the last result.
+  // If the returned no_valid_service_config is true, that means that we
+  // don't have a valid service config to use, and we should set the channel
+  // to be in TRANSIENT_FAILURE.
+  typedef bool (*ProcessResolverResultCallback)(
+      void* user_data, const Resolver::Result& result,
+      RefCountedPtr<LoadBalancingPolicy::Config>* lb_policy_config,
+      grpc_error** service_config_error, bool* no_valid_service_config);
+  // If error is set when this returns, then construction failed, and
+  // the caller may not use the new object.
+  ResolvingLoadBalancingPolicy(
+      Args args, TraceFlag* tracer, grpc_core::UniquePtr<char> target_uri,
+      ProcessResolverResultCallback process_resolver_result,
+      void* process_resolver_result_user_data);
+
+  virtual const char* name() const override { return "resolving_lb"; }
+
+  // No-op -- should never get updates from the channel.
+  // TODO(roth): Need to support updating child LB policy's config for xds
+  // use case.
+  void UpdateLocked(UpdateArgs /*args*/) override {}
+
+  void ExitIdleLocked() override;
+
+  void ResetBackoffLocked() override;
+
+ private:
+  using TraceStringVector = InlinedVector<char*, 3>;
+
+  class ResolverResultHandler;
+  class ResolvingControlHelper;
+
+  ~ResolvingLoadBalancingPolicy();
+
+  void ShutdownLocked() override;
+
+  void OnResolverError(grpc_error* error);
+  void CreateOrUpdateLbPolicyLocked(
+      RefCountedPtr<LoadBalancingPolicy::Config> lb_policy_config,
+      Resolver::Result result);
+  OrphanablePtr<LoadBalancingPolicy> CreateLbPolicyLocked(
+      const grpc_channel_args& args);
+  void MaybeAddTraceMessagesForAddressChangesLocked(
+      bool resolution_contains_addresses, TraceStringVector* trace_strings);
+  void ConcatenateAndAddChannelTraceLocked(
+      TraceStringVector* trace_strings) const;
+  void OnResolverResultChangedLocked(Resolver::Result result);
+
+  // Passed in from caller at construction time.
+  TraceFlag* tracer_;
+  grpc_core::UniquePtr<char> target_uri_;
+  ProcessResolverResultCallback process_resolver_result_ = nullptr;
+  void* process_resolver_result_user_data_ = nullptr;
+  grpc_core::UniquePtr<char> child_policy_name_;
+  RefCountedPtr<LoadBalancingPolicy::Config> child_lb_config_;
+
+  // Resolver and associated state.
+  OrphanablePtr<Resolver> resolver_;
+  bool previous_resolution_contained_addresses_ = false;
+
+  // Child LB policy.
+  OrphanablePtr<LoadBalancingPolicy> lb_policy_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVING_LB_POLICY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.cc
new file mode 100644
index 0000000..65df803
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.cc	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/retry_throttle.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/avl/avl.h"
+
+namespace grpc_core {
+namespace internal {
+
+//
+// ServerRetryThrottleData
+//
+
+ServerRetryThrottleData::ServerRetryThrottleData(
+    intptr_t max_milli_tokens, intptr_t milli_token_ratio,
+    ServerRetryThrottleData* old_throttle_data)
+    : max_milli_tokens_(max_milli_tokens),
+      milli_token_ratio_(milli_token_ratio) {
+  intptr_t initial_milli_tokens = max_milli_tokens;
+  // If there was a pre-existing entry for this server name, initialize
+  // the token count by scaling proportionately to the old data.  This
+  // ensures that if we're already throttling retries on the old scale,
+  // we will start out doing the same thing on the new one.
+  if (old_throttle_data != nullptr) {
+    double token_fraction =
+        static_cast<intptr_t>(
+            gpr_atm_acq_load(&old_throttle_data->milli_tokens_)) /
+        static_cast<double>(old_throttle_data->max_milli_tokens_);
+    initial_milli_tokens =
+        static_cast<intptr_t>(token_fraction * max_milli_tokens);
+  }
+  gpr_atm_rel_store(&milli_tokens_, static_cast<gpr_atm>(initial_milli_tokens));
+  // If there was a pre-existing entry, mark it as stale and give it a
+  // pointer to the new entry, which is its replacement.
+  if (old_throttle_data != nullptr) {
+    Ref().release();  // Ref held by pre-existing entry.
+    gpr_atm_rel_store(&old_throttle_data->replacement_,
+                      reinterpret_cast<gpr_atm>(this));
+  }
+}
+
+ServerRetryThrottleData::~ServerRetryThrottleData() {
+  ServerRetryThrottleData* replacement =
+      reinterpret_cast<ServerRetryThrottleData*>(
+          gpr_atm_acq_load(&replacement_));
+  if (replacement != nullptr) {
+    replacement->Unref();
+  }
+}
+
+void ServerRetryThrottleData::GetReplacementThrottleDataIfNeeded(
+    ServerRetryThrottleData** throttle_data) {
+  while (true) {
+    ServerRetryThrottleData* new_throttle_data =
+        reinterpret_cast<ServerRetryThrottleData*>(
+            gpr_atm_acq_load(&(*throttle_data)->replacement_));
+    if (new_throttle_data == nullptr) return;
+    *throttle_data = new_throttle_data;
+  }
+}
+
+bool ServerRetryThrottleData::RecordFailure() {
+  // First, check if we are stale and need to be replaced.
+  ServerRetryThrottleData* throttle_data = this;
+  GetReplacementThrottleDataIfNeeded(&throttle_data);
+  // We decrement milli_tokens by 1000 (1 token) for each failure.
+  const intptr_t new_value =
+      static_cast<intptr_t>(gpr_atm_no_barrier_clamped_add(
+          &throttle_data->milli_tokens_, static_cast<gpr_atm>(-1000),
+          static_cast<gpr_atm>(0),
+          static_cast<gpr_atm>(throttle_data->max_milli_tokens_)));
+  // Retries are allowed as long as the new value is above the threshold
+  // (max_milli_tokens / 2).
+  return new_value > throttle_data->max_milli_tokens_ / 2;
+}
+
+void ServerRetryThrottleData::RecordSuccess() {
+  // First, check if we are stale and need to be replaced.
+  ServerRetryThrottleData* throttle_data = this;
+  GetReplacementThrottleDataIfNeeded(&throttle_data);
+  // We increment milli_tokens by milli_token_ratio for each success.
+  gpr_atm_no_barrier_clamped_add(
+      &throttle_data->milli_tokens_,
+      static_cast<gpr_atm>(throttle_data->milli_token_ratio_),
+      static_cast<gpr_atm>(0),
+      static_cast<gpr_atm>(throttle_data->max_milli_tokens_));
+}
+
+//
+// avl vtable for string -> server_retry_throttle_data map
+//
+
+namespace {
+
+void* copy_server_name(void* key, void* /*unused*/) {
+  return gpr_strdup(static_cast<const char*>(key));
+}
+
+long compare_server_name(void* key1, void* key2, void* /*unused*/) {
+  return strcmp(static_cast<const char*>(key1), static_cast<const char*>(key2));
+}
+
+void destroy_server_retry_throttle_data(void* value, void* /*unused*/) {
+  ServerRetryThrottleData* throttle_data =
+      static_cast<ServerRetryThrottleData*>(value);
+  throttle_data->Unref();
+}
+
+void* copy_server_retry_throttle_data(void* value, void* /*unused*/) {
+  ServerRetryThrottleData* throttle_data =
+      static_cast<ServerRetryThrottleData*>(value);
+  return throttle_data->Ref().release();
+}
+
+void destroy_server_name(void* key, void* /*unused*/) { gpr_free(key); }
+
+const grpc_avl_vtable avl_vtable = {
+    destroy_server_name, copy_server_name, compare_server_name,
+    destroy_server_retry_throttle_data, copy_server_retry_throttle_data};
+
+}  // namespace
+
+//
+// ServerRetryThrottleMap
+//
+
+static gpr_mu g_mu;
+static grpc_avl g_avl;
+
+void ServerRetryThrottleMap::Init() {
+  gpr_mu_init(&g_mu);
+  g_avl = grpc_avl_create(&avl_vtable);
+}
+
+void ServerRetryThrottleMap::Shutdown() {
+  gpr_mu_destroy(&g_mu);
+  grpc_avl_unref(g_avl, nullptr);
+}
+
+RefCountedPtr<ServerRetryThrottleData> ServerRetryThrottleMap::GetDataForServer(
+    const char* server_name, intptr_t max_milli_tokens,
+    intptr_t milli_token_ratio) {
+  RefCountedPtr<ServerRetryThrottleData> result;
+  gpr_mu_lock(&g_mu);
+  ServerRetryThrottleData* throttle_data =
+      static_cast<ServerRetryThrottleData*>(
+          grpc_avl_get(g_avl, const_cast<char*>(server_name), nullptr));
+  if (throttle_data == nullptr ||
+      throttle_data->max_milli_tokens() != max_milli_tokens ||
+      throttle_data->milli_token_ratio() != milli_token_ratio) {
+    // Entry not found, or found with old parameters.  Create a new one.
+    result = MakeRefCounted<ServerRetryThrottleData>(
+        max_milli_tokens, milli_token_ratio, throttle_data);
+    g_avl = grpc_avl_add(g_avl, gpr_strdup(server_name),
+                         result->Ref().release(), nullptr);
+  } else {
+    // Entry found.  Return a new ref to it.
+    result = throttle_data->Ref();
+  }
+  gpr_mu_unlock(&g_mu);
+  return result;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.h
new file mode 100644
index 0000000..897a617
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/retry_throttle.h	
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+
+namespace grpc_core {
+namespace internal {
+
+/// Tracks retry throttling data for an individual server name.
+class ServerRetryThrottleData : public RefCounted<ServerRetryThrottleData> {
+ public:
+  ServerRetryThrottleData(intptr_t max_milli_tokens, intptr_t milli_token_ratio,
+                          ServerRetryThrottleData* old_throttle_data);
+  ~ServerRetryThrottleData();
+
+  /// Records a failure.  Returns true if it's okay to send a retry.
+  bool RecordFailure();
+
+  /// Records a success.
+  void RecordSuccess();
+
+  intptr_t max_milli_tokens() const { return max_milli_tokens_; }
+  intptr_t milli_token_ratio() const { return milli_token_ratio_; }
+
+ private:
+  void GetReplacementThrottleDataIfNeeded(
+      ServerRetryThrottleData** throttle_data);
+
+  const intptr_t max_milli_tokens_;
+  const intptr_t milli_token_ratio_;
+  gpr_atm milli_tokens_;
+  // A pointer to the replacement for this ServerRetryThrottleData entry.
+  // If non-nullptr, then this entry is stale and must not be used.
+  // We hold a reference to the replacement.
+  gpr_atm replacement_ = 0;
+};
+
+/// Global map of server name to retry throttle data.
+class ServerRetryThrottleMap {
+ public:
+  /// Initializes global map of failure data for each server name.
+  static void Init();
+  /// Shuts down global map of failure data for each server name.
+  static void Shutdown();
+
+  /// Returns the failure data for \a server_name, creating a new entry if
+  /// needed.
+  static RefCountedPtr<ServerRetryThrottleData> GetDataForServer(
+      const char* server_name, intptr_t max_milli_tokens,
+      intptr_t milli_token_ratio);
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RETRY_THROTTLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.cc
new file mode 100644
index 0000000..d46896b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.cc	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+
+namespace grpc_core {
+
+//
+// ServerAddress
+//
+
+ServerAddress::ServerAddress(const grpc_resolved_address& address,
+                             grpc_channel_args* args)
+    : address_(address), args_(args) {}
+
+ServerAddress::ServerAddress(const void* address, size_t address_len,
+                             grpc_channel_args* args)
+    : args_(args) {
+  memcpy(address_.addr, address, address_len);
+  address_.len = static_cast<socklen_t>(address_len);
+}
+
+bool ServerAddress::operator==(const ServerAddress& other) const {
+  return address_.len == other.address_.len &&
+         memcmp(address_.addr, other.address_.addr, address_.len) == 0 &&
+         grpc_channel_args_compare(args_, other.args_) == 0;
+}
+
+bool ServerAddress::IsBalancer() const {
+  return grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args_, GRPC_ARG_ADDRESS_IS_BALANCER), false);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.h
new file mode 100644
index 0000000..acd7135
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/server_address.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+// Channel arg key for a bool indicating whether an address is a grpclb
+// load balancer (as opposed to a backend).
+#define GRPC_ARG_ADDRESS_IS_BALANCER "grpc.address_is_balancer"
+
+// Channel arg key for a string indicating an address's balancer name.
+#define GRPC_ARG_ADDRESS_BALANCER_NAME "grpc.address_balancer_name"
+
+namespace grpc_core {
+
+//
+// ServerAddress
+//
+
+// A server address is a grpc_resolved_address with an associated set of
+// channel args.  Any args present here will be merged into the channel
+// args when a subchannel is created for this address.
+class ServerAddress {
+ public:
+  // Takes ownership of args.
+  ServerAddress(const grpc_resolved_address& address, grpc_channel_args* args);
+  ServerAddress(const void* address, size_t address_len,
+                grpc_channel_args* args);
+
+  ~ServerAddress() { grpc_channel_args_destroy(args_); }
+
+  // Copyable.
+  ServerAddress(const ServerAddress& other)
+      : address_(other.address_), args_(grpc_channel_args_copy(other.args_)) {}
+  ServerAddress& operator=(const ServerAddress& other) {
+    address_ = other.address_;
+    grpc_channel_args_destroy(args_);
+    args_ = grpc_channel_args_copy(other.args_);
+    return *this;
+  }
+
+  // Movable.
+  ServerAddress(ServerAddress&& other)
+      : address_(other.address_), args_(other.args_) {
+    other.args_ = nullptr;
+  }
+  ServerAddress& operator=(ServerAddress&& other) {
+    address_ = other.address_;
+    grpc_channel_args_destroy(args_);
+    args_ = other.args_;
+    other.args_ = nullptr;
+    return *this;
+  }
+
+  bool operator==(const ServerAddress& other) const;
+
+  const grpc_resolved_address& address() const { return address_; }
+  const grpc_channel_args* args() const { return args_; }
+
+  bool IsBalancer() const;
+
+ private:
+  grpc_resolved_address address_;
+  grpc_channel_args* args_;
+};
+
+//
+// ServerAddressList
+//
+
+typedef InlinedVector<ServerAddress, 1> ServerAddressList;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVER_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.cc
new file mode 100644
index 0000000..884f68f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.cc	
@@ -0,0 +1,261 @@
+//
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+
+#include <string.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+namespace grpc_core {
+
+namespace {
+typedef InlinedVector<std::unique_ptr<ServiceConfig::Parser>,
+                      ServiceConfig::kNumPreallocatedParsers>
+    ServiceConfigParserList;
+ServiceConfigParserList* g_registered_parsers;
+}  // namespace
+
+RefCountedPtr<ServiceConfig> ServiceConfig::Create(StringView json_string,
+                                                   grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr);
+  Json json = Json::Parse(json_string, error);
+  if (*error != GRPC_ERROR_NONE) return nullptr;
+  return MakeRefCounted<ServiceConfig>(
+      std::string(json_string.data(), json_string.size()), std::move(json),
+      error);
+}
+
+ServiceConfig::ServiceConfig(std::string json_string, Json json,
+                             grpc_error** error)
+    : json_string_(std::move(json_string)), json_(std::move(json)) {
+  GPR_DEBUG_ASSERT(error != nullptr);
+  if (json_.type() != Json::Type::OBJECT) {
+    *error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("JSON value is not an object");
+    return;
+  }
+  grpc_error* error_list[2];
+  int error_count = 0;
+  grpc_error* global_error = ParseGlobalParams();
+  grpc_error* local_error = ParsePerMethodParams();
+  if (global_error != GRPC_ERROR_NONE) {
+    error_list[error_count++] = global_error;
+  }
+  if (local_error != GRPC_ERROR_NONE) {
+    error_list[error_count++] = local_error;
+  }
+  if (error_count > 0) {
+    *error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Service config parsing error", error_list, error_count);
+    GRPC_ERROR_UNREF(global_error);
+    GRPC_ERROR_UNREF(local_error);
+  }
+}
+
+grpc_error* ServiceConfig::ParseGlobalParams() {
+  std::vector<grpc_error*> error_list;
+  for (size_t i = 0; i < g_registered_parsers->size(); i++) {
+    grpc_error* parser_error = GRPC_ERROR_NONE;
+    auto parsed_obj =
+        (*g_registered_parsers)[i]->ParseGlobalParams(json_, &parser_error);
+    if (parser_error != GRPC_ERROR_NONE) {
+      error_list.push_back(parser_error);
+    }
+    parsed_global_configs_.push_back(std::move(parsed_obj));
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("Global Params", &error_list);
+}
+
+grpc_error* ServiceConfig::ParseJsonMethodConfigToServiceConfigVectorTable(
+    const Json& json,
+    InlinedVector<SliceHashTable<const ParsedConfigVector*>::Entry, 10>*
+        entries) {
+  auto objs_vector = absl::make_unique<ParsedConfigVector>();
+  InlinedVector<grpc_error*, 4> error_list;
+  for (size_t i = 0; i < g_registered_parsers->size(); i++) {
+    grpc_error* parser_error = GRPC_ERROR_NONE;
+    auto parsed_obj =
+        (*g_registered_parsers)[i]->ParsePerMethodParams(json, &parser_error);
+    if (parser_error != GRPC_ERROR_NONE) {
+      error_list.push_back(parser_error);
+    }
+    objs_vector->push_back(std::move(parsed_obj));
+  }
+  parsed_method_config_vectors_storage_.push_back(std::move(objs_vector));
+  const auto* vector_ptr = parsed_method_config_vectors_storage_.back().get();
+  // Construct list of paths.
+  InlinedVector<UniquePtr<char>, 10> paths;
+  auto it = json.object_value().find("name");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::ARRAY) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:name error:not of type Array"));
+      return GRPC_ERROR_CREATE_FROM_VECTOR("methodConfig", &error_list);
+    }
+    const Json::Array& name_array = it->second.array_value();
+    for (const Json& name : name_array) {
+      grpc_error* parse_error = GRPC_ERROR_NONE;
+      UniquePtr<char> path = ParseJsonMethodName(name, &parse_error);
+      if (path == nullptr) {
+        error_list.push_back(parse_error);
+      } else {
+        GPR_DEBUG_ASSERT(parse_error == GRPC_ERROR_NONE);
+        paths.push_back(std::move(path));
+      }
+    }
+  }
+  if (paths.size() == 0) {
+    error_list.push_back(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("No names specified"));
+  }
+  // Add entry for each path.
+  for (size_t i = 0; i < paths.size(); ++i) {
+    entries->push_back(
+        {grpc_slice_from_copied_string(paths[i].get()), vector_ptr});
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("methodConfig", &error_list);
+}
+
+grpc_error* ServiceConfig::ParsePerMethodParams() {
+  InlinedVector<SliceHashTable<const ParsedConfigVector*>::Entry, 10> entries;
+  std::vector<grpc_error*> error_list;
+  auto it = json_.object_value().find("methodConfig");
+  if (it != json_.object_value().end()) {
+    if (it->second.type() != Json::Type::ARRAY) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:methodConfig error:not of type Array"));
+    }
+    for (const Json& method_config : it->second.array_value()) {
+      if (method_config.type() != Json::Type::OBJECT) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:methodConfig error:not of type Object"));
+        continue;
+      }
+      grpc_error* error = ParseJsonMethodConfigToServiceConfigVectorTable(
+          method_config, &entries);
+      if (error != GRPC_ERROR_NONE) {
+        error_list.push_back(error);
+      }
+    }
+  }
+  if (!entries.empty()) {
+    parsed_method_configs_table_ =
+        SliceHashTable<const ParsedConfigVector*>::Create(
+            entries.size(), entries.data(), nullptr);
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("Method Params", &error_list);
+}
+
+UniquePtr<char> ServiceConfig::ParseJsonMethodName(const Json& json,
+                                                   grpc_error** error) {
+  if (json.type() != Json::Type::OBJECT) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:name error:type is not object");
+    return nullptr;
+  }
+  // Find service name.
+  auto it = json.object_value().find("service");
+  if (it == json.object_value().end()) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:name error: field:service error:not found");
+    return nullptr;  // Required field.
+  }
+  if (it->second.type() != Json::Type::STRING) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:name error: field:service error:not of type string");
+    return nullptr;
+  }
+  if (it->second.string_value().empty()) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "field:name error: field:service error:empty value");
+    return nullptr;
+  }
+  const char* service_name = it->second.string_value().c_str();
+  const char* method_name = nullptr;
+  // Find method name.
+  it = json.object_value().find("method");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:name error: field:method error:not of type string");
+      return nullptr;
+    }
+    if (it->second.string_value().empty()) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:name error: field:method error:empty value");
+      return nullptr;
+    }
+    method_name = it->second.string_value().c_str();
+  }
+  char* path;
+  gpr_asprintf(&path, "/%s/%s", service_name,
+               method_name == nullptr ? "" : method_name);
+  return grpc_core::UniquePtr<char>(path);
+}
+
+const ServiceConfig::ParsedConfigVector*
+ServiceConfig::GetMethodParsedConfigVector(const grpc_slice& path) {
+  if (parsed_method_configs_table_.get() == nullptr) {
+    return nullptr;
+  }
+  const auto* value = parsed_method_configs_table_->Get(path);
+  // If we didn't find a match for the path, try looking for a wildcard
+  // entry (i.e., change "/service/method" to "/service/").
+  if (value == nullptr) {
+    char* path_str = grpc_slice_to_c_string(path);
+    const char* sep = strrchr(path_str, '/') + 1;
+    const size_t len = (size_t)(sep - path_str);
+    char* buf = (char*)gpr_malloc(len + 1);  // trailing NUL
+    memcpy(buf, path_str, len);
+    buf[len] = '\0';
+    grpc_slice wildcard_path = grpc_slice_from_copied_string(buf);
+    gpr_free(buf);
+    value = parsed_method_configs_table_->Get(wildcard_path);
+    grpc_slice_unref_internal(wildcard_path);
+    gpr_free(path_str);
+    if (value == nullptr) return nullptr;
+  }
+  return *value;
+}
+
+size_t ServiceConfig::RegisterParser(std::unique_ptr<Parser> parser) {
+  g_registered_parsers->push_back(std::move(parser));
+  return g_registered_parsers->size() - 1;
+}
+
+void ServiceConfig::Init() {
+  GPR_ASSERT(g_registered_parsers == nullptr);
+  g_registered_parsers = new ServiceConfigParserList();
+}
+
+void ServiceConfig::Shutdown() {
+  delete g_registered_parsers;
+  g_registered_parsers = nullptr;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.h
new file mode 100644
index 0000000..6e9ead5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/service_config.h	
@@ -0,0 +1,193 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+
+// The main purpose of the code here is to parse the service config in
+// JSON form, which will look like this:
+//
+// {
+//   "loadBalancingPolicy": "string",  // optional
+//   "methodConfig": [  // array of one or more method_config objects
+//     {
+//       "name": [  // array of one or more name objects
+//         {
+//           "service": "string",  // required
+//           "method": "string",  // optional
+//         }
+//       ],
+//       // remaining fields are optional.
+//       // see https://developers.google.com/protocol-buffers/docs/proto3#json
+//       // for format details.
+//       "waitForReady": bool,
+//       "timeout": "duration_string",
+//       "maxRequestMessageBytes": "int64_string",
+//       "maxResponseMessageBytes": "int64_string",
+//     }
+//   ]
+// }
+
+namespace grpc_core {
+
+class ServiceConfig : public RefCounted<ServiceConfig> {
+ public:
+  /// This is the base class that all service config parsers MUST use to store
+  /// parsed service config data.
+  class ParsedConfig {
+   public:
+    virtual ~ParsedConfig() = default;
+  };
+
+  /// This is the base class that all service config parsers should derive from.
+  class Parser {
+   public:
+    virtual ~Parser() = default;
+
+    virtual std::unique_ptr<ParsedConfig> ParseGlobalParams(
+        const Json& /* json */, grpc_error** error) {
+      // Avoid unused parameter warning on debug-only parameter
+      (void)error;
+      GPR_DEBUG_ASSERT(error != nullptr);
+      return nullptr;
+    }
+
+    virtual std::unique_ptr<ParsedConfig> ParsePerMethodParams(
+        const Json& /* json */, grpc_error** error) {
+      // Avoid unused parameter warning on debug-only parameter
+      (void)error;
+      GPR_DEBUG_ASSERT(error != nullptr);
+      return nullptr;
+    }
+  };
+
+  static constexpr int kNumPreallocatedParsers = 4;
+  typedef InlinedVector<std::unique_ptr<ParsedConfig>, kNumPreallocatedParsers>
+      ParsedConfigVector;
+
+  /// When a service config is applied to a call in the client_channel_filter,
+  /// we create an instance of this object and store it in the call_data for
+  /// client_channel. A pointer to this object is also stored in the
+  /// call_context, so that future filters can easily access method and global
+  /// parameters for the call.
+  class CallData {
+   public:
+    CallData() = default;
+    CallData(RefCountedPtr<ServiceConfig> svc_cfg, const grpc_slice& path)
+        : service_config_(std::move(svc_cfg)) {
+      if (service_config_ != nullptr) {
+        method_params_vector_ =
+            service_config_->GetMethodParsedConfigVector(path);
+      }
+    }
+
+    ServiceConfig* service_config() { return service_config_.get(); }
+
+    ParsedConfig* GetMethodParsedConfig(size_t index) const {
+      return method_params_vector_ != nullptr
+                 ? (*method_params_vector_)[index].get()
+                 : nullptr;
+    }
+
+    ParsedConfig* GetGlobalParsedConfig(size_t index) const {
+      return service_config_->GetGlobalParsedConfig(index);
+    }
+
+   private:
+    RefCountedPtr<ServiceConfig> service_config_;
+    const ParsedConfigVector* method_params_vector_ = nullptr;
+  };
+
+  /// Creates a new service config from parsing \a json_string.
+  /// Returns null on parse error.
+  static RefCountedPtr<ServiceConfig> Create(StringView json_string,
+                                             grpc_error** error);
+
+  ServiceConfig(std::string json_string, Json json, grpc_error** error);
+
+  const std::string& json_string() const { return json_string_; }
+
+  /// Retrieves the global parsed config at index \a index. The
+  /// lifetime of the returned object is tied to the lifetime of the
+  /// ServiceConfig object.
+  ParsedConfig* GetGlobalParsedConfig(size_t index) {
+    GPR_DEBUG_ASSERT(index < parsed_global_configs_.size());
+    return parsed_global_configs_[index].get();
+  }
+
+  /// Retrieves the vector of parsed configs for the method identified
+  /// by \a path.  The lifetime of the returned vector and contained objects
+  /// is tied to the lifetime of the ServiceConfig object.
+  const ParsedConfigVector* GetMethodParsedConfigVector(const grpc_slice& path);
+
+  /// Globally register a service config parser. On successful registration, it
+  /// returns the index at which the parser was registered. On failure, -1 is
+  /// returned. Each new service config update will go through all the
+  /// registered parser. Each parser is responsible for reading the service
+  /// config json and returning a parsed config. This parsed config can later be
+  /// retrieved using the same index that was returned at registration time.
+  static size_t RegisterParser(std::unique_ptr<Parser> parser);
+
+  static void Init();
+
+  static void Shutdown();
+
+ private:
+  // Helper functions to parse the service config
+  grpc_error* ParseGlobalParams();
+  grpc_error* ParsePerMethodParams();
+
+  // Returns a path string for the JSON name object specified by \a json.
+  // Returns null on error, and stores error in \a error.
+  static UniquePtr<char> ParseJsonMethodName(const Json& json,
+                                             grpc_error** error);
+
+  grpc_error* ParseJsonMethodConfigToServiceConfigVectorTable(
+      const Json& json,
+      InlinedVector<SliceHashTable<const ParsedConfigVector*>::Entry, 10>*
+          entries);
+
+  std::string json_string_;
+  Json json_;
+
+  InlinedVector<std::unique_ptr<ParsedConfig>, kNumPreallocatedParsers>
+      parsed_global_configs_;
+  // A map from the method name to the parsed config vector. Note that we are
+  // using a raw pointer and not a unique pointer so that we can use the same
+  // vector for multiple names.
+  RefCountedPtr<SliceHashTable<const ParsedConfigVector*>>
+      parsed_method_configs_table_;
+  // Storage for all the vectors that are being used in
+  // parsed_method_configs_table_.
+  InlinedVector<std::unique_ptr<ParsedConfigVector>, 32>
+      parsed_method_config_vectors_storage_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.cc
new file mode 100644
index 0000000..8ef241b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.cc	
@@ -0,0 +1,1097 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+#include <inttypes.h>
+#include <limits.h>
+
+#include <algorithm>
+#include <cstring>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/health/health_check_client.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/proxy_mapper_registry.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/status_metadata.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+// Strong and weak refs.
+#define INTERNAL_REF_BITS 16
+#define STRONG_REF_MASK (~(gpr_atm)((1 << INTERNAL_REF_BITS) - 1))
+
+// Backoff parameters.
+#define GRPC_SUBCHANNEL_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_SUBCHANNEL_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_SUBCHANNEL_RECONNECT_MIN_TIMEOUT_SECONDS 20
+#define GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_SUBCHANNEL_RECONNECT_JITTER 0.2
+
+// Conversion between subchannel call and call stack.
+#define SUBCHANNEL_CALL_TO_CALL_STACK(call) \
+  (grpc_call_stack*)((char*)(call) +        \
+                     GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(SubchannelCall)))
+#define CALL_STACK_TO_SUBCHANNEL_CALL(callstack) \
+  (SubchannelCall*)(((char*)(call_stack)) -      \
+                    GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(SubchannelCall)))
+
+namespace grpc_core {
+
+TraceFlag grpc_trace_subchannel(false, "subchannel");
+DebugOnlyTraceFlag grpc_trace_subchannel_refcount(false, "subchannel_refcount");
+
+//
+// ConnectedSubchannel
+//
+
+ConnectedSubchannel::ConnectedSubchannel(
+    grpc_channel_stack* channel_stack, const grpc_channel_args* args,
+    RefCountedPtr<channelz::SubchannelNode> channelz_subchannel)
+    : RefCounted<ConnectedSubchannel>(&grpc_trace_subchannel_refcount),
+      channel_stack_(channel_stack),
+      args_(grpc_channel_args_copy(args)),
+      channelz_subchannel_(std::move(channelz_subchannel)) {}
+
+ConnectedSubchannel::~ConnectedSubchannel() {
+  grpc_channel_args_destroy(args_);
+  GRPC_CHANNEL_STACK_UNREF(channel_stack_, "connected_subchannel_dtor");
+}
+
+void ConnectedSubchannel::StartWatch(
+    grpc_pollset_set* interested_parties,
+    OrphanablePtr<ConnectivityStateWatcherInterface> watcher) {
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  op->start_connectivity_watch = std::move(watcher);
+  op->start_connectivity_watch_state = GRPC_CHANNEL_READY;
+  op->bind_pollset_set = interested_parties;
+  grpc_channel_element* elem = grpc_channel_stack_element(channel_stack_, 0);
+  elem->filter->start_transport_op(elem, op);
+}
+
+void ConnectedSubchannel::Ping(grpc_closure* on_initiate,
+                               grpc_closure* on_ack) {
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  grpc_channel_element* elem;
+  op->send_ping.on_initiate = on_initiate;
+  op->send_ping.on_ack = on_ack;
+  elem = grpc_channel_stack_element(channel_stack_, 0);
+  elem->filter->start_transport_op(elem, op);
+}
+
+size_t ConnectedSubchannel::GetInitialCallSizeEstimate(
+    size_t parent_data_size) const {
+  size_t allocation_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(SubchannelCall));
+  if (parent_data_size > 0) {
+    allocation_size +=
+        GPR_ROUND_UP_TO_ALIGNMENT_SIZE(channel_stack_->call_stack_size) +
+        parent_data_size;
+  } else {
+    allocation_size += channel_stack_->call_stack_size;
+  }
+  return allocation_size;
+}
+
+//
+// SubchannelCall
+//
+
+RefCountedPtr<SubchannelCall> SubchannelCall::Create(Args args,
+                                                     grpc_error** error) {
+  const size_t allocation_size =
+      args.connected_subchannel->GetInitialCallSizeEstimate(
+          args.parent_data_size);
+  Arena* arena = args.arena;
+  return RefCountedPtr<SubchannelCall>(new (
+      arena->Alloc(allocation_size)) SubchannelCall(std::move(args), error));
+}
+
+SubchannelCall::SubchannelCall(Args args, grpc_error** error)
+    : connected_subchannel_(std::move(args.connected_subchannel)),
+      deadline_(args.deadline) {
+  grpc_call_stack* callstk = SUBCHANNEL_CALL_TO_CALL_STACK(this);
+  const grpc_call_element_args call_args = {
+      callstk,           /* call_stack */
+      nullptr,           /* server_transport_data */
+      args.context,      /* context */
+      args.path,         /* path */
+      args.start_time,   /* start_time */
+      args.deadline,     /* deadline */
+      args.arena,        /* arena */
+      args.call_combiner /* call_combiner */
+  };
+  *error = grpc_call_stack_init(connected_subchannel_->channel_stack(), 1,
+                                SubchannelCall::Destroy, this, &call_args);
+  if (GPR_UNLIKELY(*error != GRPC_ERROR_NONE)) {
+    const char* error_string = grpc_error_string(*error);
+    gpr_log(GPR_ERROR, "error: %s", error_string);
+    return;
+  }
+  grpc_call_stack_set_pollset_or_pollset_set(callstk, args.pollent);
+  auto* channelz_node = connected_subchannel_->channelz_subchannel();
+  if (channelz_node != nullptr) {
+    channelz_node->RecordCallStarted();
+  }
+}
+
+void SubchannelCall::StartTransportStreamOpBatch(
+    grpc_transport_stream_op_batch* batch) {
+  GPR_TIMER_SCOPE("subchannel_call_process_op", 0);
+  MaybeInterceptRecvTrailingMetadata(batch);
+  grpc_call_stack* call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(this);
+  grpc_call_element* top_elem = grpc_call_stack_element(call_stack, 0);
+  GRPC_CALL_LOG_OP(GPR_INFO, top_elem, batch);
+  top_elem->filter->start_transport_stream_op_batch(top_elem, batch);
+}
+
+void* SubchannelCall::GetParentData() {
+  grpc_channel_stack* chanstk = connected_subchannel_->channel_stack();
+  return (char*)this + GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(SubchannelCall)) +
+         GPR_ROUND_UP_TO_ALIGNMENT_SIZE(chanstk->call_stack_size);
+}
+
+grpc_call_stack* SubchannelCall::GetCallStack() {
+  return SUBCHANNEL_CALL_TO_CALL_STACK(this);
+}
+
+void SubchannelCall::SetAfterCallStackDestroy(grpc_closure* closure) {
+  GPR_ASSERT(after_call_stack_destroy_ == nullptr);
+  GPR_ASSERT(closure != nullptr);
+  after_call_stack_destroy_ = closure;
+}
+
+RefCountedPtr<SubchannelCall> SubchannelCall::Ref() {
+  IncrementRefCount();
+  return RefCountedPtr<SubchannelCall>(this);
+}
+
+RefCountedPtr<SubchannelCall> SubchannelCall::Ref(
+    const grpc_core::DebugLocation& location, const char* reason) {
+  IncrementRefCount(location, reason);
+  return RefCountedPtr<SubchannelCall>(this);
+}
+
+void SubchannelCall::Unref() {
+  GRPC_CALL_STACK_UNREF(SUBCHANNEL_CALL_TO_CALL_STACK(this), "");
+}
+
+void SubchannelCall::Unref(const DebugLocation& /*location*/,
+                           const char* reason) {
+  GRPC_CALL_STACK_UNREF(SUBCHANNEL_CALL_TO_CALL_STACK(this), reason);
+}
+
+void SubchannelCall::Destroy(void* arg, grpc_error* /*error*/) {
+  GPR_TIMER_SCOPE("subchannel_call_destroy", 0);
+  SubchannelCall* self = static_cast<SubchannelCall*>(arg);
+  // Keep some members before destroying the subchannel call.
+  grpc_closure* after_call_stack_destroy = self->after_call_stack_destroy_;
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel =
+      std::move(self->connected_subchannel_);
+  // Destroy the subchannel call.
+  self->~SubchannelCall();
+  // Destroy the call stack. This should be after destroying the subchannel
+  // call, because call->after_call_stack_destroy(), if not null, will free the
+  // call arena.
+  grpc_call_stack_destroy(SUBCHANNEL_CALL_TO_CALL_STACK(self), nullptr,
+                          after_call_stack_destroy);
+  // Automatically reset connected_subchannel. This should be after destroying
+  // the call stack, because destroying call stack needs access to the channel
+  // stack.
+}
+
+void SubchannelCall::MaybeInterceptRecvTrailingMetadata(
+    grpc_transport_stream_op_batch* batch) {
+  // only intercept payloads with recv trailing.
+  if (!batch->recv_trailing_metadata) {
+    return;
+  }
+  // only add interceptor is channelz is enabled.
+  if (connected_subchannel_->channelz_subchannel() == nullptr) {
+    return;
+  }
+  GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready_, RecvTrailingMetadataReady,
+                    this, grpc_schedule_on_exec_ctx);
+  // save some state needed for the interception callback.
+  GPR_ASSERT(recv_trailing_metadata_ == nullptr);
+  recv_trailing_metadata_ =
+      batch->payload->recv_trailing_metadata.recv_trailing_metadata;
+  original_recv_trailing_metadata_ =
+      batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+  batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+      &recv_trailing_metadata_ready_;
+}
+
+namespace {
+
+// Sets *status based on the rest of the parameters.
+void GetCallStatus(grpc_status_code* status, grpc_millis deadline,
+                   grpc_metadata_batch* md_batch, grpc_error* error) {
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error_get_status(error, deadline, status, nullptr, nullptr, nullptr);
+  } else {
+    if (md_batch->idx.named.grpc_status != nullptr) {
+      *status = grpc_get_status_code_from_metadata(
+          md_batch->idx.named.grpc_status->md);
+    } else {
+      *status = GRPC_STATUS_UNKNOWN;
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+}  // namespace
+
+void SubchannelCall::RecvTrailingMetadataReady(void* arg, grpc_error* error) {
+  SubchannelCall* call = static_cast<SubchannelCall*>(arg);
+  GPR_ASSERT(call->recv_trailing_metadata_ != nullptr);
+  grpc_status_code status = GRPC_STATUS_OK;
+  GetCallStatus(&status, call->deadline_, call->recv_trailing_metadata_,
+                GRPC_ERROR_REF(error));
+  channelz::SubchannelNode* channelz_subchannel =
+      call->connected_subchannel_->channelz_subchannel();
+  GPR_ASSERT(channelz_subchannel != nullptr);
+  if (status == GRPC_STATUS_OK) {
+    channelz_subchannel->RecordCallSucceeded();
+  } else {
+    channelz_subchannel->RecordCallFailed();
+  }
+  Closure::Run(DEBUG_LOCATION, call->original_recv_trailing_metadata_,
+               GRPC_ERROR_REF(error));
+}
+
+void SubchannelCall::IncrementRefCount() {
+  GRPC_CALL_STACK_REF(SUBCHANNEL_CALL_TO_CALL_STACK(this), "");
+}
+
+void SubchannelCall::IncrementRefCount(
+    const grpc_core::DebugLocation& /*location*/, const char* reason) {
+  GRPC_CALL_STACK_REF(SUBCHANNEL_CALL_TO_CALL_STACK(this), reason);
+}
+
+//
+// Subchannel::ConnectedSubchannelStateWatcher
+//
+
+class Subchannel::ConnectedSubchannelStateWatcher
+    : public AsyncConnectivityStateWatcherInterface {
+ public:
+  // Must be instantiated while holding c->mu.
+  explicit ConnectedSubchannelStateWatcher(Subchannel* c) : subchannel_(c) {
+    // Steal subchannel ref for connecting.
+    GRPC_SUBCHANNEL_WEAK_REF(subchannel_, "state_watcher");
+    GRPC_SUBCHANNEL_WEAK_UNREF(subchannel_, "connecting");
+  }
+
+  ~ConnectedSubchannelStateWatcher() {
+    GRPC_SUBCHANNEL_WEAK_UNREF(subchannel_, "state_watcher");
+  }
+
+ private:
+  void OnConnectivityStateChange(grpc_connectivity_state new_state) override {
+    Subchannel* c = subchannel_;
+    MutexLock lock(&c->mu_);
+    switch (new_state) {
+      case GRPC_CHANNEL_TRANSIENT_FAILURE:
+      case GRPC_CHANNEL_SHUTDOWN: {
+        if (!c->disconnected_ && c->connected_subchannel_ != nullptr) {
+          if (grpc_trace_subchannel.enabled()) {
+            gpr_log(GPR_INFO,
+                    "Connected subchannel %p of subchannel %p has gone into "
+                    "%s. Attempting to reconnect.",
+                    c->connected_subchannel_.get(), c,
+                    ConnectivityStateName(new_state));
+          }
+          c->connected_subchannel_.reset();
+          if (c->channelz_node() != nullptr) {
+            c->channelz_node()->SetChildSocket(nullptr);
+          }
+          c->SetConnectivityStateLocked(GRPC_CHANNEL_TRANSIENT_FAILURE);
+          c->backoff_begun_ = false;
+          c->backoff_.Reset();
+        }
+        break;
+      }
+      default: {
+        // In principle, this should never happen.  We should not get
+        // a callback for READY, because that was the state we started
+        // this watch from.  And a connected subchannel should never go
+        // from READY to CONNECTING or IDLE.
+        c->SetConnectivityStateLocked(new_state);
+      }
+    }
+  }
+
+  Subchannel* subchannel_;
+};
+
+//
+// Subchannel::ConnectivityStateWatcherList
+//
+
+void Subchannel::ConnectivityStateWatcherList::AddWatcherLocked(
+    OrphanablePtr<ConnectivityStateWatcherInterface> watcher) {
+  watchers_.insert(std::make_pair(watcher.get(), std::move(watcher)));
+}
+
+void Subchannel::ConnectivityStateWatcherList::RemoveWatcherLocked(
+    ConnectivityStateWatcherInterface* watcher) {
+  watchers_.erase(watcher);
+}
+
+void Subchannel::ConnectivityStateWatcherList::NotifyLocked(
+    Subchannel* subchannel, grpc_connectivity_state state) {
+  for (const auto& p : watchers_) {
+    RefCountedPtr<ConnectedSubchannel> connected_subchannel;
+    if (state == GRPC_CHANNEL_READY) {
+      connected_subchannel = subchannel->connected_subchannel_;
+    }
+    // TODO(roth): In principle, it seems wrong to send this notification
+    // to the watcher while holding the subchannel's mutex, since it could
+    // lead to a deadlock if the watcher calls back into the subchannel
+    // before returning back to us.  In practice, this doesn't happen,
+    // because the LB policy code that watches subchannels always bounces
+    // the notification into the client_channel control-plane combiner
+    // before processing it.  But if we ever have any other callers here,
+    // we will probably need to change this.
+    p.second->OnConnectivityStateChange(state, std::move(connected_subchannel));
+  }
+}
+
+//
+// Subchannel::HealthWatcherMap::HealthWatcher
+//
+
+// State needed for tracking the connectivity state with a particular
+// health check service name.
+class Subchannel::HealthWatcherMap::HealthWatcher
+    : public AsyncConnectivityStateWatcherInterface {
+ public:
+  HealthWatcher(Subchannel* c,
+                grpc_core::UniquePtr<char> health_check_service_name,
+                grpc_connectivity_state subchannel_state)
+      : subchannel_(c),
+        health_check_service_name_(std::move(health_check_service_name)),
+        state_(subchannel_state == GRPC_CHANNEL_READY ? GRPC_CHANNEL_CONNECTING
+                                                      : subchannel_state) {
+    GRPC_SUBCHANNEL_WEAK_REF(subchannel_, "health_watcher");
+    // If the subchannel is already connected, start health checking.
+    if (subchannel_state == GRPC_CHANNEL_READY) StartHealthCheckingLocked();
+  }
+
+  ~HealthWatcher() {
+    GRPC_SUBCHANNEL_WEAK_UNREF(subchannel_, "health_watcher");
+  }
+
+  const char* health_check_service_name() const {
+    return health_check_service_name_.get();
+  }
+
+  grpc_connectivity_state state() const { return state_; }
+
+  void AddWatcherLocked(
+      grpc_connectivity_state initial_state,
+      OrphanablePtr<Subchannel::ConnectivityStateWatcherInterface> watcher) {
+    if (state_ != initial_state) {
+      RefCountedPtr<ConnectedSubchannel> connected_subchannel;
+      if (state_ == GRPC_CHANNEL_READY) {
+        connected_subchannel = subchannel_->connected_subchannel_;
+      }
+      watcher->OnConnectivityStateChange(state_,
+                                         std::move(connected_subchannel));
+    }
+    watcher_list_.AddWatcherLocked(std::move(watcher));
+  }
+
+  void RemoveWatcherLocked(
+      Subchannel::ConnectivityStateWatcherInterface* watcher) {
+    watcher_list_.RemoveWatcherLocked(watcher);
+  }
+
+  bool HasWatchers() const { return !watcher_list_.empty(); }
+
+  void NotifyLocked(grpc_connectivity_state state) {
+    if (state == GRPC_CHANNEL_READY) {
+      // If we had not already notified for CONNECTING state, do so now.
+      // (We may have missed this earlier, because if the transition
+      // from IDLE to CONNECTING to READY was too quick, the connected
+      // subchannel may not have sent us a notification for CONNECTING.)
+      if (state_ != GRPC_CHANNEL_CONNECTING) {
+        state_ = GRPC_CHANNEL_CONNECTING;
+        watcher_list_.NotifyLocked(subchannel_, state_);
+      }
+      // If we've become connected, start health checking.
+      StartHealthCheckingLocked();
+    } else {
+      state_ = state;
+      watcher_list_.NotifyLocked(subchannel_, state_);
+      // We're not connected, so stop health checking.
+      health_check_client_.reset();
+    }
+  }
+
+  void Orphan() override {
+    watcher_list_.Clear();
+    health_check_client_.reset();
+    Unref();
+  }
+
+ private:
+  void OnConnectivityStateChange(grpc_connectivity_state new_state) override {
+    MutexLock lock(&subchannel_->mu_);
+    if (new_state != GRPC_CHANNEL_SHUTDOWN && health_check_client_ != nullptr) {
+      state_ = new_state;
+      watcher_list_.NotifyLocked(subchannel_, new_state);
+    }
+  }
+
+  void StartHealthCheckingLocked() {
+    GPR_ASSERT(health_check_client_ == nullptr);
+    health_check_client_ = MakeOrphanable<HealthCheckClient>(
+        health_check_service_name_.get(), subchannel_->connected_subchannel_,
+        subchannel_->pollset_set_, subchannel_->channelz_node_, Ref());
+  }
+
+  Subchannel* subchannel_;
+  grpc_core::UniquePtr<char> health_check_service_name_;
+  OrphanablePtr<HealthCheckClient> health_check_client_;
+  grpc_connectivity_state state_;
+  ConnectivityStateWatcherList watcher_list_;
+};
+
+//
+// Subchannel::HealthWatcherMap
+//
+
+void Subchannel::HealthWatcherMap::AddWatcherLocked(
+    Subchannel* subchannel, grpc_connectivity_state initial_state,
+    grpc_core::UniquePtr<char> health_check_service_name,
+    OrphanablePtr<ConnectivityStateWatcherInterface> watcher) {
+  // If the health check service name is not already present in the map,
+  // add it.
+  auto it = map_.find(health_check_service_name.get());
+  HealthWatcher* health_watcher;
+  if (it == map_.end()) {
+    const char* key = health_check_service_name.get();
+    auto w = MakeOrphanable<HealthWatcher>(
+        subchannel, std::move(health_check_service_name), subchannel->state_);
+    health_watcher = w.get();
+    map_[key] = std::move(w);
+  } else {
+    health_watcher = it->second.get();
+  }
+  // Add the watcher to the entry.
+  health_watcher->AddWatcherLocked(initial_state, std::move(watcher));
+}
+
+void Subchannel::HealthWatcherMap::RemoveWatcherLocked(
+    const char* health_check_service_name,
+    ConnectivityStateWatcherInterface* watcher) {
+  auto it = map_.find(health_check_service_name);
+  GPR_ASSERT(it != map_.end());
+  it->second->RemoveWatcherLocked(watcher);
+  // If we just removed the last watcher for this service name, remove
+  // the map entry.
+  if (!it->second->HasWatchers()) map_.erase(it);
+}
+
+void Subchannel::HealthWatcherMap::NotifyLocked(grpc_connectivity_state state) {
+  for (const auto& p : map_) {
+    p.second->NotifyLocked(state);
+  }
+}
+
+grpc_connectivity_state
+Subchannel::HealthWatcherMap::CheckConnectivityStateLocked(
+    Subchannel* subchannel, const char* health_check_service_name) {
+  auto it = map_.find(health_check_service_name);
+  if (it == map_.end()) {
+    // If the health check service name is not found in the map, we're
+    // not currently doing a health check for that service name.  If the
+    // subchannel's state without health checking is READY, report
+    // CONNECTING, since that's what we'd be in as soon as we do start a
+    // watch.  Otherwise, report the channel's state without health checking.
+    return subchannel->state_ == GRPC_CHANNEL_READY ? GRPC_CHANNEL_CONNECTING
+                                                    : subchannel->state_;
+  }
+  HealthWatcher* health_watcher = it->second.get();
+  return health_watcher->state();
+}
+
+void Subchannel::HealthWatcherMap::ShutdownLocked() { map_.clear(); }
+
+//
+// Subchannel
+//
+
+namespace {
+
+BackOff::Options ParseArgsForBackoffValues(
+    const grpc_channel_args* args, grpc_millis* min_connect_timeout_ms) {
+  grpc_millis initial_backoff_ms =
+      GRPC_SUBCHANNEL_INITIAL_CONNECT_BACKOFF_SECONDS * 1000;
+  *min_connect_timeout_ms =
+      GRPC_SUBCHANNEL_RECONNECT_MIN_TIMEOUT_SECONDS * 1000;
+  grpc_millis max_backoff_ms =
+      GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS * 1000;
+  bool fixed_reconnect_backoff = false;
+  if (args != nullptr) {
+    for (size_t i = 0; i < args->num_args; i++) {
+      if (0 == strcmp(args->args[i].key,
+                      "grpc.testing.fixed_reconnect_backoff_ms")) {
+        fixed_reconnect_backoff = true;
+        initial_backoff_ms = *min_connect_timeout_ms = max_backoff_ms =
+            grpc_channel_arg_get_integer(
+                &args->args[i],
+                {static_cast<int>(initial_backoff_ms), 100, INT_MAX});
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_MIN_RECONNECT_BACKOFF_MS)) {
+        fixed_reconnect_backoff = false;
+        *min_connect_timeout_ms = grpc_channel_arg_get_integer(
+            &args->args[i],
+            {static_cast<int>(*min_connect_timeout_ms), 100, INT_MAX});
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_MAX_RECONNECT_BACKOFF_MS)) {
+        fixed_reconnect_backoff = false;
+        max_backoff_ms = grpc_channel_arg_get_integer(
+            &args->args[i], {static_cast<int>(max_backoff_ms), 100, INT_MAX});
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_INITIAL_RECONNECT_BACKOFF_MS)) {
+        fixed_reconnect_backoff = false;
+        initial_backoff_ms = grpc_channel_arg_get_integer(
+            &args->args[i],
+            {static_cast<int>(initial_backoff_ms), 100, INT_MAX});
+      }
+    }
+  }
+  return BackOff::Options()
+      .set_initial_backoff(initial_backoff_ms)
+      .set_multiplier(fixed_reconnect_backoff
+                          ? 1.0
+                          : GRPC_SUBCHANNEL_RECONNECT_BACKOFF_MULTIPLIER)
+      .set_jitter(fixed_reconnect_backoff ? 0.0
+                                          : GRPC_SUBCHANNEL_RECONNECT_JITTER)
+      .set_max_backoff(max_backoff_ms);
+}
+
+}  // namespace
+
+Subchannel::Subchannel(SubchannelKey* key,
+                       OrphanablePtr<SubchannelConnector> connector,
+                       const grpc_channel_args* args)
+    : key_(key),
+      connector_(std::move(connector)),
+      backoff_(ParseArgsForBackoffValues(args, &min_connect_timeout_ms_)) {
+  GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED();
+  gpr_atm_no_barrier_store(&ref_pair_, 1 << INTERNAL_REF_BITS);
+  pollset_set_ = grpc_pollset_set_create();
+  grpc_resolved_address* addr =
+      static_cast<grpc_resolved_address*>(gpr_malloc(sizeof(*addr)));
+  GetAddressFromSubchannelAddressArg(args, addr);
+  grpc_resolved_address* new_address = nullptr;
+  grpc_channel_args* new_args = nullptr;
+  if (ProxyMapperRegistry::MapAddress(*addr, args, &new_address, &new_args)) {
+    GPR_ASSERT(new_address != nullptr);
+    gpr_free(addr);
+    addr = new_address;
+  }
+  static const char* keys_to_remove[] = {GRPC_ARG_SUBCHANNEL_ADDRESS};
+  grpc_arg new_arg = CreateSubchannelAddressArg(addr);
+  gpr_free(addr);
+  args_ = grpc_channel_args_copy_and_add_and_remove(
+      new_args != nullptr ? new_args : args, keys_to_remove,
+      GPR_ARRAY_SIZE(keys_to_remove), &new_arg, 1);
+  gpr_free(new_arg.value.string);
+  if (new_args != nullptr) grpc_channel_args_destroy(new_args);
+  GRPC_CLOSURE_INIT(&on_connecting_finished_, OnConnectingFinished, this,
+                    grpc_schedule_on_exec_ctx);
+  const grpc_arg* arg = grpc_channel_args_find(args_, GRPC_ARG_ENABLE_CHANNELZ);
+  const bool channelz_enabled =
+      grpc_channel_arg_get_bool(arg, GRPC_ENABLE_CHANNELZ_DEFAULT);
+  arg = grpc_channel_args_find(
+      args_, GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE);
+  const grpc_integer_options options = {
+      GRPC_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE_DEFAULT, 0, INT_MAX};
+  size_t channel_tracer_max_memory =
+      (size_t)grpc_channel_arg_get_integer(arg, options);
+  if (channelz_enabled) {
+    channelz_node_ = MakeRefCounted<channelz::SubchannelNode>(
+        GetTargetAddress(), channel_tracer_max_memory);
+    channelz_node_->AddTraceEvent(
+        channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string("subchannel created"));
+  }
+}
+
+Subchannel::~Subchannel() {
+  if (channelz_node_ != nullptr) {
+    channelz_node_->AddTraceEvent(
+        channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string("Subchannel destroyed"));
+    channelz_node_->UpdateConnectivityState(GRPC_CHANNEL_SHUTDOWN);
+  }
+  grpc_channel_args_destroy(args_);
+  connector_.reset();
+  grpc_pollset_set_destroy(pollset_set_);
+  delete key_;
+}
+
+Subchannel* Subchannel::Create(OrphanablePtr<SubchannelConnector> connector,
+                               const grpc_channel_args* args) {
+  SubchannelKey* key = new SubchannelKey(args);
+  SubchannelPoolInterface* subchannel_pool =
+      SubchannelPoolInterface::GetSubchannelPoolFromChannelArgs(args);
+  GPR_ASSERT(subchannel_pool != nullptr);
+  Subchannel* c = subchannel_pool->FindSubchannel(key);
+  if (c != nullptr) {
+    delete key;
+    return c;
+  }
+  c = new Subchannel(key, std::move(connector), args);
+  // Try to register the subchannel before setting the subchannel pool.
+  // Otherwise, in case of a registration race, unreffing c in
+  // RegisterSubchannel() will cause c to be tried to be unregistered, while
+  // its key maps to a different subchannel.
+  Subchannel* registered = subchannel_pool->RegisterSubchannel(key, c);
+  if (registered == c) c->subchannel_pool_ = subchannel_pool->Ref();
+  return registered;
+}
+
+Subchannel* Subchannel::Ref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+  gpr_atm old_refs;
+  old_refs = RefMutate((1 << INTERNAL_REF_BITS),
+                       0 GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE("STRONG_REF"));
+  GPR_ASSERT((old_refs & STRONG_REF_MASK) != 0);
+  return this;
+}
+
+void Subchannel::Unref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+  gpr_atm old_refs;
+  // add a weak ref and subtract a strong ref (atomically)
+  old_refs = RefMutate(
+      static_cast<gpr_atm>(1) - static_cast<gpr_atm>(1 << INTERNAL_REF_BITS),
+      1 GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE("STRONG_UNREF"));
+  if ((old_refs & STRONG_REF_MASK) == (1 << INTERNAL_REF_BITS)) {
+    Disconnect();
+  }
+  GRPC_SUBCHANNEL_WEAK_UNREF(this, "strong-unref");
+}
+
+Subchannel* Subchannel::WeakRef(GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+  gpr_atm old_refs;
+  old_refs = RefMutate(1, 0 GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE("WEAK_REF"));
+  GPR_ASSERT(old_refs != 0);
+  return this;
+}
+
+namespace {
+
+void subchannel_destroy(void* arg, grpc_error* /*error*/) {
+  Subchannel* self = static_cast<Subchannel*>(arg);
+  delete self;
+}
+
+}  // namespace
+
+void Subchannel::WeakUnref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+  gpr_atm old_refs;
+  old_refs = RefMutate(-static_cast<gpr_atm>(1),
+                       1 GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE("WEAK_UNREF"));
+  if (old_refs == 1) {
+    ExecCtx::Run(DEBUG_LOCATION,
+                 GRPC_CLOSURE_CREATE(subchannel_destroy, this,
+                                     grpc_schedule_on_exec_ctx),
+                 GRPC_ERROR_NONE);
+  }
+}
+
+Subchannel* Subchannel::RefFromWeakRef() {
+  for (;;) {
+    gpr_atm old_refs = gpr_atm_acq_load(&ref_pair_);
+    if (old_refs >= (1 << INTERNAL_REF_BITS)) {
+      gpr_atm new_refs = old_refs + (1 << INTERNAL_REF_BITS);
+      if (gpr_atm_rel_cas(&ref_pair_, old_refs, new_refs)) {
+        return this;
+      }
+    } else {
+      return nullptr;
+    }
+  }
+}
+
+const char* Subchannel::GetTargetAddress() {
+  const grpc_arg* addr_arg =
+      grpc_channel_args_find(args_, GRPC_ARG_SUBCHANNEL_ADDRESS);
+  const char* addr_str = grpc_channel_arg_get_string(addr_arg);
+  GPR_ASSERT(addr_str != nullptr);  // Should have been set by LB policy.
+  return addr_str;
+}
+
+channelz::SubchannelNode* Subchannel::channelz_node() {
+  return channelz_node_.get();
+}
+
+grpc_connectivity_state Subchannel::CheckConnectivityState(
+    const char* health_check_service_name,
+    RefCountedPtr<ConnectedSubchannel>* connected_subchannel) {
+  MutexLock lock(&mu_);
+  grpc_connectivity_state state;
+  if (health_check_service_name == nullptr) {
+    state = state_;
+  } else {
+    state = health_watcher_map_.CheckConnectivityStateLocked(
+        this, health_check_service_name);
+  }
+  if (connected_subchannel != nullptr && state == GRPC_CHANNEL_READY) {
+    *connected_subchannel = connected_subchannel_;
+  }
+  return state;
+}
+
+void Subchannel::WatchConnectivityState(
+    grpc_connectivity_state initial_state,
+    grpc_core::UniquePtr<char> health_check_service_name,
+    OrphanablePtr<ConnectivityStateWatcherInterface> watcher) {
+  MutexLock lock(&mu_);
+  grpc_pollset_set* interested_parties = watcher->interested_parties();
+  if (interested_parties != nullptr) {
+    grpc_pollset_set_add_pollset_set(pollset_set_, interested_parties);
+  }
+  if (health_check_service_name == nullptr) {
+    if (state_ != initial_state) {
+      watcher->OnConnectivityStateChange(state_, connected_subchannel_);
+    }
+    watcher_list_.AddWatcherLocked(std::move(watcher));
+  } else {
+    health_watcher_map_.AddWatcherLocked(this, initial_state,
+                                         std::move(health_check_service_name),
+                                         std::move(watcher));
+  }
+}
+
+void Subchannel::CancelConnectivityStateWatch(
+    const char* health_check_service_name,
+    ConnectivityStateWatcherInterface* watcher) {
+  MutexLock lock(&mu_);
+  grpc_pollset_set* interested_parties = watcher->interested_parties();
+  if (interested_parties != nullptr) {
+    grpc_pollset_set_del_pollset_set(pollset_set_, interested_parties);
+  }
+  if (health_check_service_name == nullptr) {
+    watcher_list_.RemoveWatcherLocked(watcher);
+  } else {
+    health_watcher_map_.RemoveWatcherLocked(health_check_service_name, watcher);
+  }
+}
+
+void Subchannel::AttemptToConnect() {
+  MutexLock lock(&mu_);
+  MaybeStartConnectingLocked();
+}
+
+void Subchannel::ResetBackoff() {
+  MutexLock lock(&mu_);
+  backoff_.Reset();
+  if (have_retry_alarm_) {
+    retry_immediately_ = true;
+    grpc_timer_cancel(&retry_alarm_);
+  } else {
+    backoff_begun_ = false;
+    MaybeStartConnectingLocked();
+  }
+}
+
+grpc_arg Subchannel::CreateSubchannelAddressArg(
+    const grpc_resolved_address* addr) {
+  return grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_SUBCHANNEL_ADDRESS,
+      addr->len > 0 ? grpc_sockaddr_to_uri(addr) : gpr_strdup(""));
+}
+
+const char* Subchannel::GetUriFromSubchannelAddressArg(
+    const grpc_channel_args* args) {
+  const grpc_arg* addr_arg =
+      grpc_channel_args_find(args, GRPC_ARG_SUBCHANNEL_ADDRESS);
+  const char* addr_str = grpc_channel_arg_get_string(addr_arg);
+  GPR_ASSERT(addr_str != nullptr);  // Should have been set by LB policy.
+  return addr_str;
+}
+
+namespace {
+
+void UriToSockaddr(const char* uri_str, grpc_resolved_address* addr) {
+  grpc_uri* uri = grpc_uri_parse(uri_str, 0 /* suppress_errors */);
+  GPR_ASSERT(uri != nullptr);
+  if (!grpc_parse_uri(uri, addr)) memset(addr, 0, sizeof(*addr));
+  grpc_uri_destroy(uri);
+}
+
+}  // namespace
+
+void Subchannel::GetAddressFromSubchannelAddressArg(
+    const grpc_channel_args* args, grpc_resolved_address* addr) {
+  const char* addr_uri_str = GetUriFromSubchannelAddressArg(args);
+  memset(addr, 0, sizeof(*addr));
+  if (*addr_uri_str != '\0') {
+    UriToSockaddr(addr_uri_str, addr);
+  }
+}
+
+namespace {
+
+// Returns a string indicating the subchannel's connectivity state change to
+// \a state.
+const char* SubchannelConnectivityStateChangeString(
+    grpc_connectivity_state state) {
+  switch (state) {
+    case GRPC_CHANNEL_IDLE:
+      return "Subchannel state change to IDLE";
+    case GRPC_CHANNEL_CONNECTING:
+      return "Subchannel state change to CONNECTING";
+    case GRPC_CHANNEL_READY:
+      return "Subchannel state change to READY";
+    case GRPC_CHANNEL_TRANSIENT_FAILURE:
+      return "Subchannel state change to TRANSIENT_FAILURE";
+    case GRPC_CHANNEL_SHUTDOWN:
+      return "Subchannel state change to SHUTDOWN";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+}  // namespace
+
+// Note: Must be called with a state that is different from the current state.
+void Subchannel::SetConnectivityStateLocked(grpc_connectivity_state state) {
+  state_ = state;
+  if (channelz_node_ != nullptr) {
+    channelz_node_->UpdateConnectivityState(state);
+    channelz_node_->AddTraceEvent(
+        channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string(
+            SubchannelConnectivityStateChangeString(state)));
+  }
+  // Notify non-health watchers.
+  watcher_list_.NotifyLocked(this, state);
+  // Notify health watchers.
+  health_watcher_map_.NotifyLocked(state);
+}
+
+void Subchannel::MaybeStartConnectingLocked() {
+  if (disconnected_) {
+    // Don't try to connect if we're already disconnected.
+    return;
+  }
+  if (connecting_) {
+    // Already connecting: don't restart.
+    return;
+  }
+  if (connected_subchannel_ != nullptr) {
+    // Already connected: don't restart.
+    return;
+  }
+  connecting_ = true;
+  GRPC_SUBCHANNEL_WEAK_REF(this, "connecting");
+  if (!backoff_begun_) {
+    backoff_begun_ = true;
+    ContinueConnectingLocked();
+  } else {
+    GPR_ASSERT(!have_retry_alarm_);
+    have_retry_alarm_ = true;
+    const grpc_millis time_til_next =
+        next_attempt_deadline_ - ExecCtx::Get()->Now();
+    if (time_til_next <= 0) {
+      gpr_log(GPR_INFO, "Subchannel %p: Retry immediately", this);
+    } else {
+      gpr_log(GPR_INFO, "Subchannel %p: Retry in %" PRId64 " milliseconds",
+              this, time_til_next);
+    }
+    GRPC_CLOSURE_INIT(&on_retry_alarm_, OnRetryAlarm, this,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&retry_alarm_, next_attempt_deadline_, &on_retry_alarm_);
+  }
+}
+
+void Subchannel::OnRetryAlarm(void* arg, grpc_error* error) {
+  Subchannel* c = static_cast<Subchannel*>(arg);
+  // TODO(soheilhy): Once subchannel refcounting is simplified, we can get use
+  //                 MutexLock instead of ReleasableMutexLock, here.
+  ReleasableMutexLock lock(&c->mu_);
+  c->have_retry_alarm_ = false;
+  if (c->disconnected_) {
+    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING("Disconnected",
+                                                             &error, 1);
+  } else if (c->retry_immediately_) {
+    c->retry_immediately_ = false;
+    error = GRPC_ERROR_NONE;
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  if (error == GRPC_ERROR_NONE) {
+    gpr_log(GPR_INFO, "Failed to connect to channel, retrying");
+    c->ContinueConnectingLocked();
+    lock.Unlock();
+  } else {
+    lock.Unlock();
+    GRPC_SUBCHANNEL_WEAK_UNREF(c, "connecting");
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void Subchannel::ContinueConnectingLocked() {
+  SubchannelConnector::Args args;
+  args.interested_parties = pollset_set_;
+  const grpc_millis min_deadline =
+      min_connect_timeout_ms_ + ExecCtx::Get()->Now();
+  next_attempt_deadline_ = backoff_.NextAttemptTime();
+  args.deadline = std::max(next_attempt_deadline_, min_deadline);
+  args.channel_args = args_;
+  SetConnectivityStateLocked(GRPC_CHANNEL_CONNECTING);
+  connector_->Connect(args, &connecting_result_, &on_connecting_finished_);
+}
+
+void Subchannel::OnConnectingFinished(void* arg, grpc_error* error) {
+  auto* c = static_cast<Subchannel*>(arg);
+  const grpc_channel_args* delete_channel_args =
+      c->connecting_result_.channel_args;
+  GRPC_SUBCHANNEL_WEAK_REF(c, "on_connecting_finished");
+  {
+    MutexLock lock(&c->mu_);
+    c->connecting_ = false;
+    if (c->connecting_result_.transport != nullptr &&
+        c->PublishTransportLocked()) {
+      // Do nothing, transport was published.
+    } else if (c->disconnected_) {
+      GRPC_SUBCHANNEL_WEAK_UNREF(c, "connecting");
+    } else {
+      gpr_log(GPR_INFO, "Connect failed: %s", grpc_error_string(error));
+      c->SetConnectivityStateLocked(GRPC_CHANNEL_TRANSIENT_FAILURE);
+      GRPC_SUBCHANNEL_WEAK_UNREF(c, "connecting");
+    }
+  }
+  GRPC_SUBCHANNEL_WEAK_UNREF(c, "on_connecting_finished");
+  grpc_channel_args_destroy(delete_channel_args);
+}
+
+namespace {
+
+void ConnectionDestroy(void* arg, grpc_error* /*error*/) {
+  grpc_channel_stack* stk = static_cast<grpc_channel_stack*>(arg);
+  grpc_channel_stack_destroy(stk);
+  gpr_free(stk);
+}
+
+}  // namespace
+
+bool Subchannel::PublishTransportLocked() {
+  // Construct channel stack.
+  grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create();
+  grpc_channel_stack_builder_set_channel_arguments(
+      builder, connecting_result_.channel_args);
+  grpc_channel_stack_builder_set_transport(builder,
+                                           connecting_result_.transport);
+  if (!grpc_channel_init_create_stack(builder, GRPC_CLIENT_SUBCHANNEL)) {
+    grpc_channel_stack_builder_destroy(builder);
+    return false;
+  }
+  grpc_channel_stack* stk;
+  grpc_error* error = grpc_channel_stack_builder_finish(
+      builder, 0, 1, ConnectionDestroy, nullptr,
+      reinterpret_cast<void**>(&stk));
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_destroy(connecting_result_.transport);
+    gpr_log(GPR_ERROR, "error initializing subchannel stack: %s",
+            grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+    return false;
+  }
+  RefCountedPtr<channelz::SocketNode> socket =
+      std::move(connecting_result_.socket_node);
+  connecting_result_.Reset();
+  if (disconnected_) {
+    grpc_channel_stack_destroy(stk);
+    gpr_free(stk);
+    return false;
+  }
+  // Publish.
+  connected_subchannel_.reset(
+      new ConnectedSubchannel(stk, args_, channelz_node_));
+  gpr_log(GPR_INFO, "New connected subchannel at %p for subchannel %p",
+          connected_subchannel_.get(), this);
+  if (channelz_node_ != nullptr) {
+    channelz_node_->SetChildSocket(std::move(socket));
+  }
+  // Start watching connected subchannel.
+  connected_subchannel_->StartWatch(
+      pollset_set_, MakeOrphanable<ConnectedSubchannelStateWatcher>(this));
+  // Report initial state.
+  SetConnectivityStateLocked(GRPC_CHANNEL_READY);
+  return true;
+}
+
+void Subchannel::Disconnect() {
+  // The subchannel_pool is only used once here in this subchannel, so the
+  // access can be outside of the lock.
+  if (subchannel_pool_ != nullptr) {
+    subchannel_pool_->UnregisterSubchannel(key_);
+    subchannel_pool_.reset();
+  }
+  MutexLock lock(&mu_);
+  GPR_ASSERT(!disconnected_);
+  disconnected_ = true;
+  connector_.reset();
+  connected_subchannel_.reset();
+  health_watcher_map_.ShutdownLocked();
+}
+
+gpr_atm Subchannel::RefMutate(
+    gpr_atm delta, int barrier GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS) {
+  gpr_atm old_val = barrier ? gpr_atm_full_fetch_add(&ref_pair_, delta)
+                            : gpr_atm_no_barrier_fetch_add(&ref_pair_, delta);
+#ifndef NDEBUG
+  if (grpc_trace_subchannel_refcount.enabled()) {
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "SUBCHANNEL: %p %12s 0x%" PRIxPTR " -> 0x%" PRIxPTR " [%s]", this,
+            purpose, old_val, old_val + delta, reason);
+  }
+#endif
+  return old_val;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.h
new file mode 100644
index 0000000..cf4ddaf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel.h	
@@ -0,0 +1,403 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/client_channel_channelz.h"
+#include "src/core/ext/filters/client_channel/connector.h"
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata.h"
+
+// Channel arg containing a grpc_resolved_address to connect to.
+#define GRPC_ARG_SUBCHANNEL_ADDRESS "grpc.subchannel_address"
+
+// For debugging refcounting.
+#ifndef NDEBUG
+#define GRPC_SUBCHANNEL_REF(p, r) (p)->Ref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(p, r) (p)->RefFromWeakRef()
+#define GRPC_SUBCHANNEL_UNREF(p, r) (p)->Unref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_WEAK_REF(p, r) (p)->WeakRef(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) (p)->WeakUnref(__FILE__, __LINE__, (r))
+#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS \
+  const char *file, int line, const char *reason
+#define GRPC_SUBCHANNEL_REF_REASON reason
+#define GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS \
+  , GRPC_SUBCHANNEL_REF_EXTRA_ARGS, const char* purpose
+#define GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE(x) , file, line, reason, x
+#else
+#define GRPC_SUBCHANNEL_REF(p, r) (p)->Ref()
+#define GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(p, r) (p)->RefFromWeakRef()
+#define GRPC_SUBCHANNEL_UNREF(p, r) (p)->Unref()
+#define GRPC_SUBCHANNEL_WEAK_REF(p, r) (p)->WeakRef()
+#define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) (p)->WeakUnref()
+#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS
+#define GRPC_SUBCHANNEL_REF_REASON ""
+#define GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS
+#define GRPC_SUBCHANNEL_REF_MUTATE_PURPOSE(x)
+#endif
+
+namespace grpc_core {
+
+class SubchannelCall;
+
+class ConnectedSubchannel : public RefCounted<ConnectedSubchannel> {
+ public:
+  ConnectedSubchannel(
+      grpc_channel_stack* channel_stack, const grpc_channel_args* args,
+      RefCountedPtr<channelz::SubchannelNode> channelz_subchannel);
+  ~ConnectedSubchannel();
+
+  void StartWatch(grpc_pollset_set* interested_parties,
+                  OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  void Ping(grpc_closure* on_initiate, grpc_closure* on_ack);
+
+  grpc_channel_stack* channel_stack() const { return channel_stack_; }
+  const grpc_channel_args* args() const { return args_; }
+  channelz::SubchannelNode* channelz_subchannel() const {
+    return channelz_subchannel_.get();
+  }
+
+  size_t GetInitialCallSizeEstimate(size_t parent_data_size) const;
+
+ private:
+  grpc_channel_stack* channel_stack_;
+  grpc_channel_args* args_;
+  // ref counted pointer to the channelz node in this connected subchannel's
+  // owning subchannel.
+  RefCountedPtr<channelz::SubchannelNode> channelz_subchannel_;
+};
+
+// Implements the interface of RefCounted<>.
+class SubchannelCall {
+ public:
+  struct Args {
+    RefCountedPtr<ConnectedSubchannel> connected_subchannel;
+    grpc_polling_entity* pollent;
+    grpc_slice path;
+    gpr_cycle_counter start_time;
+    grpc_millis deadline;
+    Arena* arena;
+    grpc_call_context_element* context;
+    CallCombiner* call_combiner;
+    size_t parent_data_size;
+  };
+  static RefCountedPtr<SubchannelCall> Create(Args args, grpc_error** error);
+
+  // Continues processing a transport stream op batch.
+  void StartTransportStreamOpBatch(grpc_transport_stream_op_batch* batch);
+
+  // Returns a pointer to the parent data associated with the subchannel call.
+  // The data will be of the size specified in \a parent_data_size field of
+  // the args passed to \a ConnectedSubchannel::CreateCall().
+  void* GetParentData();
+
+  // Returns the call stack of the subchannel call.
+  grpc_call_stack* GetCallStack();
+
+  // Sets the 'then_schedule_closure' argument for call stack destruction.
+  // Must be called once per call.
+  void SetAfterCallStackDestroy(grpc_closure* closure);
+
+  // Interface of RefCounted<>.
+  RefCountedPtr<SubchannelCall> Ref() GRPC_MUST_USE_RESULT;
+  RefCountedPtr<SubchannelCall> Ref(const DebugLocation& location,
+                                    const char* reason) GRPC_MUST_USE_RESULT;
+  // When refcount drops to 0, destroys itself and the associated call stack,
+  // but does NOT free the memory because it's in the call arena.
+  void Unref();
+  void Unref(const DebugLocation& location, const char* reason);
+
+  static void Destroy(void* arg, grpc_error* error);
+
+ private:
+  // Allow RefCountedPtr<> to access IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  SubchannelCall(Args args, grpc_error** error);
+
+  // If channelz is enabled, intercepts recv_trailing so that we may check the
+  // status and associate it to a subchannel.
+  void MaybeInterceptRecvTrailingMetadata(
+      grpc_transport_stream_op_batch* batch);
+
+  static void RecvTrailingMetadataReady(void* arg, grpc_error* error);
+
+  // Interface of RefCounted<>.
+  void IncrementRefCount();
+  void IncrementRefCount(const DebugLocation& location, const char* reason);
+
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  grpc_closure* after_call_stack_destroy_ = nullptr;
+  // State needed to support channelz interception of recv trailing metadata.
+  grpc_closure recv_trailing_metadata_ready_;
+  grpc_closure* original_recv_trailing_metadata_ = nullptr;
+  grpc_metadata_batch* recv_trailing_metadata_ = nullptr;
+  grpc_millis deadline_;
+};
+
+// A subchannel that knows how to connect to exactly one target address. It
+// provides a target for load balancing.
+//
+// Note that this is the "real" subchannel implementation, whose API is
+// different from the SubchannelInterface that is exposed to LB policy
+// implementations.  The client channel provides an adaptor class
+// (SubchannelWrapper) that "converts" between the two.
+class Subchannel {
+ public:
+  class ConnectivityStateWatcherInterface
+      : public InternallyRefCounted<ConnectivityStateWatcherInterface> {
+   public:
+    virtual ~ConnectivityStateWatcherInterface() = default;
+
+    // Will be invoked whenever the subchannel's connectivity state
+    // changes.  There will be only one invocation of this method on a
+    // given watcher instance at any given time.
+    //
+    // When the state changes to READY, connected_subchannel will
+    // contain a ref to the connected subchannel.  When it changes from
+    // READY to some other state, the implementation must release its
+    // ref to the connected subchannel.
+    virtual void OnConnectivityStateChange(
+        grpc_connectivity_state new_state,
+        RefCountedPtr<ConnectedSubchannel> connected_subchannel)  // NOLINT
+        = 0;
+
+    virtual grpc_pollset_set* interested_parties() = 0;
+  };
+
+  // The ctor and dtor are not intended to use directly.
+  Subchannel(SubchannelKey* key, OrphanablePtr<SubchannelConnector> connector,
+             const grpc_channel_args* args);
+  ~Subchannel();
+
+  // Creates a subchannel given \a connector and \a args.
+  static Subchannel* Create(OrphanablePtr<SubchannelConnector> connector,
+                            const grpc_channel_args* args);
+
+  // Strong and weak refcounting.
+  Subchannel* Ref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  void Unref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  Subchannel* WeakRef(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  void WeakUnref(GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+  // Attempts to return a strong ref when only the weak refcount is guaranteed
+  // non-zero. If the strong refcount is zero, does not alter the refcount and
+  // returns null.
+  Subchannel* RefFromWeakRef();
+
+  // Gets the string representing the subchannel address.
+  // Caller doesn't take ownership.
+  const char* GetTargetAddress();
+
+  const grpc_channel_args* channel_args() const { return args_; }
+
+  channelz::SubchannelNode* channelz_node();
+
+  // Returns the current connectivity state of the subchannel.
+  // If health_check_service_name is non-null, the returned connectivity
+  // state will be based on the state reported by the backend for that
+  // service name.
+  // If the return value is GRPC_CHANNEL_READY, also sets *connected_subchannel.
+  grpc_connectivity_state CheckConnectivityState(
+      const char* health_check_service_name,
+      RefCountedPtr<ConnectedSubchannel>* connected_subchannel);
+
+  // Starts watching the subchannel's connectivity state.
+  // The first callback to the watcher will be delivered when the
+  // subchannel's connectivity state becomes a value other than
+  // initial_state, which may happen immediately.
+  // Subsequent callbacks will be delivered as the subchannel's state
+  // changes.
+  // The watcher will be destroyed either when the subchannel is
+  // destroyed or when CancelConnectivityStateWatch() is called.
+  void WatchConnectivityState(
+      grpc_connectivity_state initial_state,
+      grpc_core::UniquePtr<char> health_check_service_name,
+      OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  // Cancels a connectivity state watch.
+  // If the watcher has already been destroyed, this is a no-op.
+  void CancelConnectivityStateWatch(const char* health_check_service_name,
+                                    ConnectivityStateWatcherInterface* watcher);
+
+  // Attempt to connect to the backend.  Has no effect if already connected.
+  void AttemptToConnect();
+
+  // Resets the connection backoff of the subchannel.
+  // TODO(roth): Move connection backoff out of subchannels and up into LB
+  // policy code (probably by adding a SubchannelGroup between
+  // SubchannelList and SubchannelData), at which point this method can
+  // go away.
+  void ResetBackoff();
+
+  // Returns a new channel arg encoding the subchannel address as a URI
+  // string. Caller is responsible for freeing the string.
+  static grpc_arg CreateSubchannelAddressArg(const grpc_resolved_address* addr);
+
+  // Returns the URI string from the subchannel address arg in \a args.
+  static const char* GetUriFromSubchannelAddressArg(
+      const grpc_channel_args* args);
+
+  // Sets \a addr from the subchannel address arg in \a args.
+  static void GetAddressFromSubchannelAddressArg(const grpc_channel_args* args,
+                                                 grpc_resolved_address* addr);
+
+ private:
+  // A linked list of ConnectivityStateWatcherInterfaces that are monitoring
+  // the subchannel's state.
+  class ConnectivityStateWatcherList {
+   public:
+    ~ConnectivityStateWatcherList() { Clear(); }
+
+    void AddWatcherLocked(
+        OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+    void RemoveWatcherLocked(ConnectivityStateWatcherInterface* watcher);
+
+    // Notifies all watchers in the list about a change to state.
+    void NotifyLocked(Subchannel* subchannel, grpc_connectivity_state state);
+
+    void Clear() { watchers_.clear(); }
+
+    bool empty() const { return watchers_.empty(); }
+
+   private:
+    // TODO(roth): Once we can use C++-14 heterogeneous lookups, this can
+    // be a set instead of a map.
+    std::map<ConnectivityStateWatcherInterface*,
+             OrphanablePtr<ConnectivityStateWatcherInterface>>
+        watchers_;
+  };
+
+  // A map that tracks ConnectivityStateWatcherInterfaces using a particular
+  // health check service name.
+  //
+  // There is one entry in the map for each health check service name.
+  // Entries exist only as long as there are watchers using the
+  // corresponding service name.
+  //
+  // A health check client is maintained only while the subchannel is in
+  // state READY.
+  class HealthWatcherMap {
+   public:
+    void AddWatcherLocked(
+        Subchannel* subchannel, grpc_connectivity_state initial_state,
+        grpc_core::UniquePtr<char> health_check_service_name,
+        OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+    void RemoveWatcherLocked(const char* health_check_service_name,
+                             ConnectivityStateWatcherInterface* watcher);
+
+    // Notifies the watcher when the subchannel's state changes.
+    void NotifyLocked(grpc_connectivity_state state);
+
+    grpc_connectivity_state CheckConnectivityStateLocked(
+        Subchannel* subchannel, const char* health_check_service_name);
+
+    void ShutdownLocked();
+
+   private:
+    class HealthWatcher;
+
+    std::map<const char*, OrphanablePtr<HealthWatcher>, StringLess> map_;
+  };
+
+  class ConnectedSubchannelStateWatcher;
+
+  // Sets the subchannel's connectivity state to \a state.
+  void SetConnectivityStateLocked(grpc_connectivity_state state);
+
+  // Methods for connection.
+  void MaybeStartConnectingLocked();
+  static void OnRetryAlarm(void* arg, grpc_error* error);
+  void ContinueConnectingLocked();
+  static void OnConnectingFinished(void* arg, grpc_error* error);
+  bool PublishTransportLocked();
+  void Disconnect();
+
+  gpr_atm RefMutate(gpr_atm delta,
+                    int barrier GRPC_SUBCHANNEL_REF_MUTATE_EXTRA_ARGS);
+
+  // The subchannel pool this subchannel is in.
+  RefCountedPtr<SubchannelPoolInterface> subchannel_pool_;
+  // TODO(juanlishen): Consider using args_ as key_ directly.
+  // Subchannel key that identifies this subchannel in the subchannel pool.
+  SubchannelKey* key_;
+  // Channel args.
+  grpc_channel_args* args_;
+  // pollset_set tracking who's interested in a connection being setup.
+  grpc_pollset_set* pollset_set_;
+  // Protects the other members.
+  Mutex mu_;
+  // Refcount
+  //    - lower INTERNAL_REF_BITS bits are for internal references:
+  //      these do not keep the subchannel open.
+  //    - upper remaining bits are for public references: these do
+  //      keep the subchannel open
+  gpr_atm ref_pair_;
+
+  // Connection states.
+  OrphanablePtr<SubchannelConnector> connector_;
+  // Set during connection.
+  SubchannelConnector::Result connecting_result_;
+  grpc_closure on_connecting_finished_;
+  // Active connection, or null.
+  RefCountedPtr<ConnectedSubchannel> connected_subchannel_;
+  bool connecting_ = false;
+  bool disconnected_ = false;
+
+  // Connectivity state tracking.
+  grpc_connectivity_state state_ = GRPC_CHANNEL_IDLE;
+  // The list of watchers without a health check service name.
+  ConnectivityStateWatcherList watcher_list_;
+  // The map of watchers with health check service names.
+  HealthWatcherMap health_watcher_map_;
+
+  // Backoff state.
+  BackOff backoff_;
+  grpc_millis next_attempt_deadline_;
+  grpc_millis min_connect_timeout_ms_;
+  bool backoff_begun_ = false;
+
+  // Retry alarm.
+  grpc_timer retry_alarm_;
+  grpc_closure on_retry_alarm_;
+  bool have_retry_alarm_ = false;
+  // reset_backoff() was called while alarm was pending.
+  bool retry_immediately_ = false;
+
+  // Channelz tracking.
+  RefCountedPtr<channelz::SubchannelNode> channelz_node_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_interface.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_interface.h
new file mode 100644
index 0000000..f7a788a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_interface.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// The interface for subchannels that is exposed to LB policy implementations.
+class SubchannelInterface : public RefCounted<SubchannelInterface> {
+ public:
+  class ConnectivityStateWatcherInterface {
+   public:
+    virtual ~ConnectivityStateWatcherInterface() = default;
+
+    // Will be invoked whenever the subchannel's connectivity state
+    // changes.  There will be only one invocation of this method on a
+    // given watcher instance at any given time.
+    virtual void OnConnectivityStateChange(
+        grpc_connectivity_state new_state) = 0;
+
+    // TODO(roth): Remove this as soon as we move to EventManager-based
+    // polling.
+    virtual grpc_pollset_set* interested_parties() = 0;
+  };
+
+  template <typename TraceFlagT = TraceFlag>
+  explicit SubchannelInterface(TraceFlagT* trace_flag = nullptr)
+      : RefCounted<SubchannelInterface>(trace_flag) {}
+
+  virtual ~SubchannelInterface() = default;
+
+  // Returns the current connectivity state of the subchannel.
+  virtual grpc_connectivity_state CheckConnectivityState() = 0;
+
+  // Starts watching the subchannel's connectivity state.
+  // The first callback to the watcher will be delivered when the
+  // subchannel's connectivity state becomes a value other than
+  // initial_state, which may happen immediately.
+  // Subsequent callbacks will be delivered as the subchannel's state
+  // changes.
+  // The watcher will be destroyed either when the subchannel is
+  // destroyed or when CancelConnectivityStateWatch() is called.
+  // There can be only one watcher of a given subchannel.  It is not
+  // valid to call this method a second time without first cancelling
+  // the previous watcher using CancelConnectivityStateWatch().
+  virtual void WatchConnectivityState(
+      grpc_connectivity_state initial_state,
+      std::unique_ptr<ConnectivityStateWatcherInterface> watcher) = 0;
+
+  // Cancels a connectivity state watch.
+  // If the watcher has already been destroyed, this is a no-op.
+  virtual void CancelConnectivityStateWatch(
+      ConnectivityStateWatcherInterface* watcher) = 0;
+
+  // Attempt to connect to the backend.  Has no effect if already connected.
+  // If the subchannel is currently in backoff delay due to a previously
+  // failed attempt, the new connection attempt will not start until the
+  // backoff delay has elapsed.
+  virtual void AttemptToConnect() = 0;
+
+  // Resets the subchannel's connection backoff state.  If AttemptToConnect()
+  // has been called since the subchannel entered TRANSIENT_FAILURE state,
+  // starts a new connection attempt immediately; otherwise, a new connection
+  // attempt will be started as soon as AttemptToConnect() is called.
+  virtual void ResetBackoff() = 0;
+
+  // TODO(roth): Need a better non-grpc-specific abstraction here.
+  virtual const grpc_channel_args* channel_args() = 0;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.cc
new file mode 100644
index 0000000..bb35f22
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.cc	
@@ -0,0 +1,97 @@
+//
+//
+// Copyright 2018 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/subchannel_pool_interface.h"
+
+#include "src/core/lib/gpr/useful.h"
+
+// The subchannel pool to reuse subchannels.
+#define GRPC_ARG_SUBCHANNEL_POOL "grpc.subchannel_pool"
+// The subchannel key ID that is only used in test to make each key unique.
+#define GRPC_ARG_SUBCHANNEL_KEY_TEST_ONLY_ID "grpc.subchannel_key_test_only_id"
+
+namespace grpc_core {
+
+TraceFlag grpc_subchannel_pool_trace(false, "subchannel_pool");
+
+SubchannelKey::SubchannelKey(const grpc_channel_args* args) {
+  Init(args, grpc_channel_args_normalize);
+}
+
+SubchannelKey::~SubchannelKey() {
+  grpc_channel_args_destroy(const_cast<grpc_channel_args*>(args_));
+}
+
+SubchannelKey::SubchannelKey(const SubchannelKey& other) {
+  Init(other.args_, grpc_channel_args_copy);
+}
+
+SubchannelKey& SubchannelKey::operator=(const SubchannelKey& other) {
+  grpc_channel_args_destroy(const_cast<grpc_channel_args*>(args_));
+  Init(other.args_, grpc_channel_args_copy);
+  return *this;
+}
+
+int SubchannelKey::Cmp(const SubchannelKey& other) const {
+  return grpc_channel_args_compare(args_, other.args_);
+}
+
+void SubchannelKey::Init(
+    const grpc_channel_args* args,
+    grpc_channel_args* (*copy_channel_args)(const grpc_channel_args* args)) {
+  args_ = copy_channel_args(args);
+}
+
+namespace {
+
+void* arg_copy(void* p) {
+  auto* subchannel_pool = static_cast<SubchannelPoolInterface*>(p);
+  subchannel_pool->Ref().release();
+  return p;
+}
+
+void arg_destroy(void* p) {
+  auto* subchannel_pool = static_cast<SubchannelPoolInterface*>(p);
+  subchannel_pool->Unref();
+}
+
+int arg_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+const grpc_arg_pointer_vtable subchannel_pool_arg_vtable = {
+    arg_copy, arg_destroy, arg_cmp};
+
+}  // namespace
+
+grpc_arg SubchannelPoolInterface::CreateChannelArg(
+    SubchannelPoolInterface* subchannel_pool) {
+  return grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_ARG_SUBCHANNEL_POOL), subchannel_pool,
+      &subchannel_pool_arg_vtable);
+}
+
+SubchannelPoolInterface*
+SubchannelPoolInterface::GetSubchannelPoolFromChannelArgs(
+    const grpc_channel_args* args) {
+  const grpc_arg* arg = grpc_channel_args_find(args, GRPC_ARG_SUBCHANNEL_POOL);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return nullptr;
+  return static_cast<SubchannelPoolInterface*>(arg->value.pointer.p);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.h
new file mode 100644
index 0000000..2fe5fa3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/subchannel_pool_interface.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/avl/avl.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+
+namespace grpc_core {
+
+class Subchannel;
+
+extern TraceFlag grpc_subchannel_pool_trace;
+
+// A key that can uniquely identify a subchannel.
+class SubchannelKey {
+ public:
+  explicit SubchannelKey(const grpc_channel_args* args);
+  ~SubchannelKey();
+
+  // Copyable.
+  SubchannelKey(const SubchannelKey& other);
+  SubchannelKey& operator=(const SubchannelKey& other);
+  // Not movable.
+  SubchannelKey(SubchannelKey&&) = delete;
+  SubchannelKey& operator=(SubchannelKey&&) = delete;
+
+  int Cmp(const SubchannelKey& other) const;
+
+ private:
+  // Initializes the subchannel key with the given \a args and the function to
+  // copy channel args.
+  void Init(
+      const grpc_channel_args* args,
+      grpc_channel_args* (*copy_channel_args)(const grpc_channel_args* args));
+
+  const grpc_channel_args* args_;
+};
+
+// Interface for subchannel pool.
+// TODO(juanlishen): This refcounting mechanism may lead to memory leak.
+// To solve that, we should force polling to flush any pending callbacks, then
+// shut down safely. See https://github.com/grpc/grpc/issues/12560.
+class SubchannelPoolInterface : public RefCounted<SubchannelPoolInterface> {
+ public:
+  SubchannelPoolInterface() : RefCounted(&grpc_subchannel_pool_trace) {}
+  virtual ~SubchannelPoolInterface() {}
+
+  // Registers a subchannel against a key. Returns the subchannel registered
+  // with \a key, which may be different from \a constructed because we reuse
+  // (instead of update) any existing subchannel already registered with \a key.
+  virtual Subchannel* RegisterSubchannel(SubchannelKey* key,
+                                         Subchannel* constructed) = 0;
+
+  // Removes the registered subchannel found by \a key.
+  virtual void UnregisterSubchannel(SubchannelKey* key) = 0;
+
+  // Finds the subchannel registered for the given subchannel key. Returns NULL
+  // if no such channel exists. Thread-safe.
+  virtual Subchannel* FindSubchannel(SubchannelKey* key) = 0;
+
+  // Creates a channel arg from \a subchannel pool.
+  static grpc_arg CreateChannelArg(SubchannelPoolInterface* subchannel_pool);
+
+  // Gets the subchannel pool from the channel args.
+  static SubchannelPoolInterface* GetSubchannelPoolFromChannelArgs(
+      const grpc_channel_args* args);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.cc
new file mode 100644
index 0000000..6eb8560
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.cc	
@@ -0,0 +1,1867 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <algorithm>
+#include <cctype>
+#include <cstdlib>
+
+#include "absl/strings/str_cat.h"
+#include "absl/strings/str_join.h"
+
+#include <grpc/impl/codegen/log.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_api.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cds.upb.h"
+#else
+  #include  "envoy/api/v2/cds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h"
+#else
+  #include  "envoy/api/v2/core/health_check.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/eds.upb.h"
+#else
+  #include  "envoy/api/v2/eds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/load_report.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/lds.upb.h"
+#else
+  #include  "envoy/api/v2/lds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/rds.upb.h"
+#else
+  #include  "envoy/api/v2/rds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h"
+#else
+  #include  "envoy/api/v2/route/route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h"
+#else
+  #include  "envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h"
+#else
+  #include  "envoy/config/listener/v2/api_listener.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h"
+#else
+  #include  "envoy/service/load_stats/v2/lrs.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/rpc/status.upb.h"
+#else
+  #include  "google/rpc/status.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+namespace grpc_core {
+
+//
+// XdsApi::PriorityListUpdate
+//
+
+bool XdsApi::PriorityListUpdate::operator==(
+    const XdsApi::PriorityListUpdate& other) const {
+  if (priorities_.size() != other.priorities_.size()) return false;
+  for (size_t i = 0; i < priorities_.size(); ++i) {
+    if (priorities_[i].localities != other.priorities_[i].localities) {
+      return false;
+    }
+  }
+  return true;
+}
+
+void XdsApi::PriorityListUpdate::Add(
+    XdsApi::PriorityListUpdate::LocalityMap::Locality locality) {
+  // Pad the missing priorities in case the localities are not ordered by
+  // priority.
+  if (!Contains(locality.priority)) priorities_.resize(locality.priority + 1);
+  LocalityMap& locality_map = priorities_[locality.priority];
+  locality_map.localities.emplace(locality.name, std::move(locality));
+}
+
+const XdsApi::PriorityListUpdate::LocalityMap* XdsApi::PriorityListUpdate::Find(
+    uint32_t priority) const {
+  if (!Contains(priority)) return nullptr;
+  return &priorities_[priority];
+}
+
+bool XdsApi::PriorityListUpdate::Contains(
+    const RefCountedPtr<XdsLocalityName>& name) {
+  for (size_t i = 0; i < priorities_.size(); ++i) {
+    const LocalityMap& locality_map = priorities_[i];
+    if (locality_map.Contains(name)) return true;
+  }
+  return false;
+}
+
+//
+// XdsApi::DropConfig
+//
+
+bool XdsApi::DropConfig::ShouldDrop(const std::string** category_name) const {
+  for (size_t i = 0; i < drop_category_list_.size(); ++i) {
+    const auto& drop_category = drop_category_list_[i];
+    // Generate a random number in [0, 1000000).
+    const uint32_t random = static_cast<uint32_t>(rand()) % 1000000;
+    if (random < drop_category.parts_per_million) {
+      *category_name = &drop_category.name;
+      return true;
+    }
+  }
+  return false;
+}
+
+//
+// XdsApi
+//
+
+const char* XdsApi::kLdsTypeUrl = "type.googleapis.com/envoy.api.v2.Listener";
+const char* XdsApi::kRdsTypeUrl =
+    "type.googleapis.com/envoy.api.v2.RouteConfiguration";
+const char* XdsApi::kCdsTypeUrl = "type.googleapis.com/envoy.api.v2.Cluster";
+const char* XdsApi::kEdsTypeUrl =
+    "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment";
+
+XdsApi::XdsApi(XdsClient* client, TraceFlag* tracer,
+               const XdsBootstrap::Node* node)
+    : client_(client),
+      tracer_(tracer),
+      node_(node),
+      build_version_(absl::StrCat("gRPC C-core ", GPR_PLATFORM_STRING, " ",
+                                  grpc_version_string())),
+      user_agent_name_(absl::StrCat("gRPC C-core ", GPR_PLATFORM_STRING)) {}
+
+namespace {
+
+void PopulateMetadataValue(upb_arena* arena, google_protobuf_Value* value_pb,
+                           const Json& value);
+
+void PopulateListValue(upb_arena* arena, google_protobuf_ListValue* list_value,
+                       const Json::Array& values) {
+  for (const auto& value : values) {
+    auto* value_pb = google_protobuf_ListValue_add_values(list_value, arena);
+    PopulateMetadataValue(arena, value_pb, value);
+  }
+}
+
+void PopulateMetadata(upb_arena* arena, google_protobuf_Struct* metadata_pb,
+                      const Json::Object& metadata) {
+  for (const auto& p : metadata) {
+    google_protobuf_Struct_FieldsEntry* field =
+        google_protobuf_Struct_add_fields(metadata_pb, arena);
+    google_protobuf_Struct_FieldsEntry_set_key(
+        field, upb_strview_makez(p.first.c_str()));
+    google_protobuf_Value* value =
+        google_protobuf_Struct_FieldsEntry_mutable_value(field, arena);
+    PopulateMetadataValue(arena, value, p.second);
+  }
+}
+
+void PopulateMetadataValue(upb_arena* arena, google_protobuf_Value* value_pb,
+                           const Json& value) {
+  switch (value.type()) {
+    case Json::Type::JSON_NULL:
+      google_protobuf_Value_set_null_value(value_pb, 0);
+      break;
+    case Json::Type::NUMBER:
+      google_protobuf_Value_set_number_value(
+          value_pb, strtod(value.string_value().c_str(), nullptr));
+      break;
+    case Json::Type::STRING:
+      google_protobuf_Value_set_string_value(
+          value_pb, upb_strview_makez(value.string_value().c_str()));
+      break;
+    case Json::Type::JSON_TRUE:
+      google_protobuf_Value_set_bool_value(value_pb, true);
+      break;
+    case Json::Type::JSON_FALSE:
+      google_protobuf_Value_set_bool_value(value_pb, false);
+      break;
+    case Json::Type::OBJECT: {
+      google_protobuf_Struct* struct_value =
+          google_protobuf_Value_mutable_struct_value(value_pb, arena);
+      PopulateMetadata(arena, struct_value, value.object_value());
+      break;
+    }
+    case Json::Type::ARRAY: {
+      google_protobuf_ListValue* list_value =
+          google_protobuf_Value_mutable_list_value(value_pb, arena);
+      PopulateListValue(arena, list_value, value.array_value());
+      break;
+    }
+  }
+}
+
+void PopulateNode(upb_arena* arena, const XdsBootstrap::Node* node,
+                  const std::string& build_version,
+                  const std::string& user_agent_name,
+                  const std::string& server_name,
+                  envoy_api_v2_core_Node* node_msg) {
+  if (node != nullptr) {
+    if (!node->id.empty()) {
+      envoy_api_v2_core_Node_set_id(node_msg,
+                                    upb_strview_makez(node->id.c_str()));
+    }
+    if (!node->cluster.empty()) {
+      envoy_api_v2_core_Node_set_cluster(
+          node_msg, upb_strview_makez(node->cluster.c_str()));
+    }
+    if (!node->metadata.object_value().empty()) {
+      google_protobuf_Struct* metadata =
+          envoy_api_v2_core_Node_mutable_metadata(node_msg, arena);
+      PopulateMetadata(arena, metadata, node->metadata.object_value());
+    }
+    if (!server_name.empty()) {
+      google_protobuf_Struct* metadata =
+          envoy_api_v2_core_Node_mutable_metadata(node_msg, arena);
+      google_protobuf_Struct_FieldsEntry* field =
+          google_protobuf_Struct_add_fields(metadata, arena);
+      google_protobuf_Struct_FieldsEntry_set_key(
+          field, upb_strview_makez("PROXYLESS_CLIENT_HOSTNAME"));
+      google_protobuf_Value* value =
+          google_protobuf_Struct_FieldsEntry_mutable_value(field, arena);
+      google_protobuf_Value_set_string_value(
+          value, upb_strview_make(server_name.data(), server_name.size()));
+    }
+    if (!node->locality_region.empty() || !node->locality_zone.empty() ||
+        !node->locality_subzone.empty()) {
+      envoy_api_v2_core_Locality* locality =
+          envoy_api_v2_core_Node_mutable_locality(node_msg, arena);
+      if (!node->locality_region.empty()) {
+        envoy_api_v2_core_Locality_set_region(
+            locality, upb_strview_makez(node->locality_region.c_str()));
+      }
+      if (!node->locality_zone.empty()) {
+        envoy_api_v2_core_Locality_set_zone(
+            locality, upb_strview_makez(node->locality_zone.c_str()));
+      }
+      if (!node->locality_subzone.empty()) {
+        envoy_api_v2_core_Locality_set_sub_zone(
+            locality, upb_strview_makez(node->locality_subzone.c_str()));
+      }
+    }
+  }
+  envoy_api_v2_core_Node_set_build_version(
+      node_msg, upb_strview_make(build_version.data(), build_version.size()));
+  envoy_api_v2_core_Node_set_user_agent_name(
+      node_msg,
+      upb_strview_make(user_agent_name.data(), user_agent_name.size()));
+  envoy_api_v2_core_Node_set_user_agent_version(
+      node_msg, upb_strview_makez(grpc_version_string()));
+  envoy_api_v2_core_Node_add_client_features(
+      node_msg, upb_strview_makez("envoy.lb.does_not_support_overprovisioning"),
+      arena);
+}
+
+envoy_api_v2_DiscoveryRequest* CreateDiscoveryRequest(
+    upb_arena* arena, const char* type_url, const std::string& version,
+    const std::string& nonce, grpc_error* error) {
+  // Create a request.
+  envoy_api_v2_DiscoveryRequest* request =
+      envoy_api_v2_DiscoveryRequest_new(arena);
+  // Set type_url.
+  envoy_api_v2_DiscoveryRequest_set_type_url(request,
+                                             upb_strview_makez(type_url));
+  // Set version_info.
+  if (!version.empty()) {
+    envoy_api_v2_DiscoveryRequest_set_version_info(
+        request, upb_strview_makez(version.c_str()));
+  }
+  // Set nonce.
+  if (!nonce.empty()) {
+    envoy_api_v2_DiscoveryRequest_set_response_nonce(
+        request, upb_strview_makez(nonce.c_str()));
+  }
+  // Set error_detail if it's a NACK.
+  if (error != GRPC_ERROR_NONE) {
+    grpc_slice error_description_slice;
+    GPR_ASSERT(grpc_error_get_str(error, GRPC_ERROR_STR_DESCRIPTION,
+                                  &error_description_slice));
+    upb_strview error_description_strview =
+        upb_strview_make(reinterpret_cast<const char*>(
+                             GPR_SLICE_START_PTR(error_description_slice)),
+                         GPR_SLICE_LENGTH(error_description_slice));
+    google_rpc_Status* error_detail =
+        envoy_api_v2_DiscoveryRequest_mutable_error_detail(request, arena);
+    google_rpc_Status_set_message(error_detail, error_description_strview);
+    GRPC_ERROR_UNREF(error);
+  }
+  return request;
+}
+
+inline absl::string_view UpbStringToAbsl(const upb_strview& str) {
+  return absl::string_view(str.data, str.size);
+}
+
+inline void AddStringField(const char* name, const upb_strview& value,
+                           std::vector<std::string>* fields,
+                           bool add_if_empty = false) {
+  if (value.size > 0 || add_if_empty) {
+    fields->emplace_back(
+        absl::StrCat(name, ": \"", UpbStringToAbsl(value), "\""));
+  }
+}
+
+inline void AddLocalityField(int indent_level,
+                             const envoy_api_v2_core_Locality* locality,
+                             std::vector<std::string>* fields) {
+  std::string indent =
+      absl::StrJoin(std::vector<std::string>(indent_level, "  "), "");
+  // region
+  std::string field = absl::StrCat(indent, "region");
+  AddStringField(field.c_str(), envoy_api_v2_core_Locality_region(locality),
+                 fields);
+  // zone
+  field = absl::StrCat(indent, "zone");
+  AddStringField(field.c_str(), envoy_api_v2_core_Locality_zone(locality),
+                 fields);
+  // sub_zone
+  field = absl::StrCat(indent, "sub_zone");
+  AddStringField(field.c_str(), envoy_api_v2_core_Locality_sub_zone(locality),
+                 fields);
+}
+
+void AddNodeLogFields(const envoy_api_v2_core_Node* node,
+                      std::vector<std::string>* fields) {
+  fields->emplace_back("node {");
+  // id
+  AddStringField("  id", envoy_api_v2_core_Node_id(node), fields);
+  // metadata
+  const google_protobuf_Struct* metadata =
+      envoy_api_v2_core_Node_metadata(node);
+  if (metadata != nullptr) {
+    fields->emplace_back("  metadata {");
+    size_t num_entries;
+    const google_protobuf_Struct_FieldsEntry* const* entries =
+        google_protobuf_Struct_fields(metadata, &num_entries);
+    for (size_t i = 0; i < num_entries; ++i) {
+      fields->emplace_back("    field {");
+      // key
+      AddStringField("      key",
+                     google_protobuf_Struct_FieldsEntry_key(entries[i]),
+                     fields);
+      // value
+      const google_protobuf_Value* value =
+          google_protobuf_Struct_FieldsEntry_value(entries[i]);
+      if (value != nullptr) {
+        std::string value_str;
+        if (google_protobuf_Value_has_string_value(value)) {
+          value_str = absl::StrCat(
+              "string_value: \"",
+              UpbStringToAbsl(google_protobuf_Value_string_value(value)), "\"");
+        } else if (google_protobuf_Value_has_null_value(value)) {
+          value_str = "null_value: NULL_VALUE";
+        } else if (google_protobuf_Value_has_number_value(value)) {
+          value_str = absl::StrCat("double_value: ",
+                                   google_protobuf_Value_number_value(value));
+        } else if (google_protobuf_Value_has_bool_value(value)) {
+          value_str = absl::StrCat("bool_value: ",
+                                   google_protobuf_Value_bool_value(value));
+        } else if (google_protobuf_Value_has_struct_value(value)) {
+          value_str = "struct_value: <not printed>";
+        } else if (google_protobuf_Value_has_list_value(value)) {
+          value_str = "list_value: <not printed>";
+        } else {
+          value_str = "<unknown>";
+        }
+        fields->emplace_back(absl::StrCat("      value { ", value_str, " }"));
+      }
+      fields->emplace_back("    }");
+    }
+    fields->emplace_back("  }");
+  }
+  // locality
+  const envoy_api_v2_core_Locality* locality =
+      envoy_api_v2_core_Node_locality(node);
+  if (locality != nullptr) {
+    fields->emplace_back("  locality {");
+    AddLocalityField(2, locality, fields);
+    fields->emplace_back("  }");
+  }
+  // build_version
+  AddStringField("  build_version", envoy_api_v2_core_Node_build_version(node),
+                 fields);
+  // user_agent_name
+  AddStringField("  user_agent_name",
+                 envoy_api_v2_core_Node_user_agent_name(node), fields);
+  // user_agent_version
+  AddStringField("  user_agent_version",
+                 envoy_api_v2_core_Node_user_agent_version(node), fields);
+  // client_features
+  size_t num_client_features;
+  const upb_strview* client_features =
+      envoy_api_v2_core_Node_client_features(node, &num_client_features);
+  for (size_t i = 0; i < num_client_features; ++i) {
+    AddStringField("  client_features", client_features[i], fields);
+  }
+  fields->emplace_back("}");
+}
+
+void MaybeLogDiscoveryRequest(XdsClient* client, TraceFlag* tracer,
+                              const envoy_api_v2_DiscoveryRequest* request) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // version_info
+    AddStringField("version_info",
+                   envoy_api_v2_DiscoveryRequest_version_info(request),
+                   &fields);
+    // node
+    const envoy_api_v2_core_Node* node =
+        envoy_api_v2_DiscoveryRequest_node(request);
+    if (node != nullptr) AddNodeLogFields(node, &fields);
+    // resource_names
+    size_t num_resource_names;
+    const upb_strview* resource_names =
+        envoy_api_v2_DiscoveryRequest_resource_names(request,
+                                                     &num_resource_names);
+    for (size_t i = 0; i < num_resource_names; ++i) {
+      AddStringField("resource_names", resource_names[i], &fields);
+    }
+    // type_url
+    AddStringField("type_url", envoy_api_v2_DiscoveryRequest_type_url(request),
+                   &fields);
+    // response_nonce
+    AddStringField("response_nonce",
+                   envoy_api_v2_DiscoveryRequest_response_nonce(request),
+                   &fields);
+    // error_detail
+    const struct google_rpc_Status* error_detail =
+        envoy_api_v2_DiscoveryRequest_error_detail(request);
+    if (error_detail != nullptr) {
+      fields.emplace_back("error_detail {");
+      // code
+      int32_t code = google_rpc_Status_code(error_detail);
+      if (code != 0) fields.emplace_back(absl::StrCat("  code: ", code));
+      // message
+      AddStringField("  message", google_rpc_Status_message(error_detail),
+                     &fields);
+      fields.emplace_back("}");
+    }
+    gpr_log(GPR_DEBUG, "[xds_client %p] constructed ADS request: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+grpc_slice SerializeDiscoveryRequest(upb_arena* arena,
+                                     envoy_api_v2_DiscoveryRequest* request) {
+  size_t output_length;
+  char* output =
+      envoy_api_v2_DiscoveryRequest_serialize(request, arena, &output_length);
+  return grpc_slice_from_copied_buffer(output, output_length);
+}
+
+}  // namespace
+
+grpc_slice XdsApi::CreateUnsupportedTypeNackRequest(const std::string& type_url,
+                                                    const std::string& nonce,
+                                                    grpc_error* error) {
+  upb::Arena arena;
+  envoy_api_v2_DiscoveryRequest* request = CreateDiscoveryRequest(
+      arena.ptr(), type_url.c_str(), /*version=*/"", nonce, error);
+  MaybeLogDiscoveryRequest(client_, tracer_, request);
+  return SerializeDiscoveryRequest(arena.ptr(), request);
+}
+
+grpc_slice XdsApi::CreateLdsRequest(const std::string& server_name,
+                                    const std::string& version,
+                                    const std::string& nonce, grpc_error* error,
+                                    bool populate_node) {
+  upb::Arena arena;
+  envoy_api_v2_DiscoveryRequest* request =
+      CreateDiscoveryRequest(arena.ptr(), kLdsTypeUrl, version, nonce, error);
+  // Populate node.
+  if (populate_node) {
+    envoy_api_v2_core_Node* node_msg =
+        envoy_api_v2_DiscoveryRequest_mutable_node(request, arena.ptr());
+    PopulateNode(arena.ptr(), node_, build_version_, user_agent_name_, "",
+                 node_msg);
+  }
+  // Add resource_name.
+  envoy_api_v2_DiscoveryRequest_add_resource_names(
+      request, upb_strview_make(server_name.data(), server_name.size()),
+      arena.ptr());
+  MaybeLogDiscoveryRequest(client_, tracer_, request);
+  return SerializeDiscoveryRequest(arena.ptr(), request);
+}
+
+grpc_slice XdsApi::CreateRdsRequest(const std::string& route_config_name,
+                                    const std::string& version,
+                                    const std::string& nonce, grpc_error* error,
+                                    bool populate_node) {
+  upb::Arena arena;
+  envoy_api_v2_DiscoveryRequest* request =
+      CreateDiscoveryRequest(arena.ptr(), kRdsTypeUrl, version, nonce, error);
+  // Populate node.
+  if (populate_node) {
+    envoy_api_v2_core_Node* node_msg =
+        envoy_api_v2_DiscoveryRequest_mutable_node(request, arena.ptr());
+    PopulateNode(arena.ptr(), node_, build_version_, user_agent_name_, "",
+                 node_msg);
+  }
+  // Add resource_name.
+  envoy_api_v2_DiscoveryRequest_add_resource_names(
+      request,
+      upb_strview_make(route_config_name.data(), route_config_name.size()),
+      arena.ptr());
+  MaybeLogDiscoveryRequest(client_, tracer_, request);
+  return SerializeDiscoveryRequest(arena.ptr(), request);
+}
+
+grpc_slice XdsApi::CreateCdsRequest(const std::set<StringView>& cluster_names,
+                                    const std::string& version,
+                                    const std::string& nonce, grpc_error* error,
+                                    bool populate_node) {
+  upb::Arena arena;
+  envoy_api_v2_DiscoveryRequest* request =
+      CreateDiscoveryRequest(arena.ptr(), kCdsTypeUrl, version, nonce, error);
+  // Populate node.
+  if (populate_node) {
+    envoy_api_v2_core_Node* node_msg =
+        envoy_api_v2_DiscoveryRequest_mutable_node(request, arena.ptr());
+    PopulateNode(arena.ptr(), node_, build_version_, user_agent_name_, "",
+                 node_msg);
+  }
+  // Add resource_names.
+  for (const auto& cluster_name : cluster_names) {
+    envoy_api_v2_DiscoveryRequest_add_resource_names(
+        request, upb_strview_make(cluster_name.data(), cluster_name.size()),
+        arena.ptr());
+  }
+  MaybeLogDiscoveryRequest(client_, tracer_, request);
+  return SerializeDiscoveryRequest(arena.ptr(), request);
+}
+
+grpc_slice XdsApi::CreateEdsRequest(
+    const std::set<StringView>& eds_service_names, const std::string& version,
+    const std::string& nonce, grpc_error* error, bool populate_node) {
+  upb::Arena arena;
+  envoy_api_v2_DiscoveryRequest* request =
+      CreateDiscoveryRequest(arena.ptr(), kEdsTypeUrl, version, nonce, error);
+  // Populate node.
+  if (populate_node) {
+    envoy_api_v2_core_Node* node_msg =
+        envoy_api_v2_DiscoveryRequest_mutable_node(request, arena.ptr());
+    PopulateNode(arena.ptr(), node_, build_version_, user_agent_name_, "",
+                 node_msg);
+  }
+  // Add resource_names.
+  for (const auto& eds_service_name : eds_service_names) {
+    envoy_api_v2_DiscoveryRequest_add_resource_names(
+        request,
+        upb_strview_make(eds_service_name.data(), eds_service_name.size()),
+        arena.ptr());
+  }
+  MaybeLogDiscoveryRequest(client_, tracer_, request);
+  return SerializeDiscoveryRequest(arena.ptr(), request);
+}
+
+namespace {
+
+void MaybeLogDiscoveryResponse(XdsClient* client, TraceFlag* tracer,
+                               const envoy_api_v2_DiscoveryResponse* response) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // version_info
+    AddStringField("version_info",
+                   envoy_api_v2_DiscoveryResponse_version_info(response),
+                   &fields);
+    // resources
+    size_t num_resources;
+    envoy_api_v2_DiscoveryResponse_resources(response, &num_resources);
+    fields.emplace_back(
+        absl::StrCat("resources: <", num_resources, " element(s)>"));
+    // type_url
+    AddStringField("type_url",
+                   envoy_api_v2_DiscoveryResponse_type_url(response), &fields);
+    // nonce
+    AddStringField("nonce", envoy_api_v2_DiscoveryResponse_nonce(response),
+                   &fields);
+    gpr_log(GPR_DEBUG, "[xds_client %p] received response: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+void MaybeLogRouteConfiguration(
+    XdsClient* client, TraceFlag* tracer,
+    const envoy_api_v2_RouteConfiguration* route_config) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // name
+    AddStringField("name", envoy_api_v2_RouteConfiguration_name(route_config),
+                   &fields);
+    // virtual_hosts
+    size_t num_virtual_hosts;
+    const envoy_api_v2_route_VirtualHost* const* virtual_hosts =
+        envoy_api_v2_RouteConfiguration_virtual_hosts(route_config,
+                                                      &num_virtual_hosts);
+    for (size_t i = 0; i < num_virtual_hosts; ++i) {
+      const auto* virtual_host = virtual_hosts[i];
+      fields.push_back("virtual_hosts {");
+      // name
+      AddStringField(
+          "  name", envoy_api_v2_route_VirtualHost_name(virtual_host), &fields);
+      // domains
+      size_t num_domains;
+      const upb_strview* const domains =
+          envoy_api_v2_route_VirtualHost_domains(virtual_host, &num_domains);
+      for (size_t j = 0; j < num_domains; ++j) {
+        AddStringField("  domains", domains[j], &fields);
+      }
+      // routes
+      size_t num_routes;
+      const envoy_api_v2_route_Route* const* routes =
+          envoy_api_v2_route_VirtualHost_routes(virtual_host, &num_routes);
+      for (size_t j = 0; j < num_routes; ++j) {
+        const auto* route = routes[j];
+        fields.push_back("  route {");
+        // name
+        AddStringField("    name", envoy_api_v2_route_Route_name(route),
+                       &fields);
+        // match
+        const envoy_api_v2_route_RouteMatch* match =
+            envoy_api_v2_route_Route_match(route);
+        if (match != nullptr) {
+          fields.emplace_back("    match {");
+          // path matching
+          if (envoy_api_v2_route_RouteMatch_has_prefix(match)) {
+            AddStringField("      prefix",
+                           envoy_api_v2_route_RouteMatch_prefix(match), &fields,
+                           /*add_if_empty=*/true);
+          } else if (envoy_api_v2_route_RouteMatch_has_path(match)) {
+            AddStringField("      path",
+                           envoy_api_v2_route_RouteMatch_path(match), &fields,
+                           /*add_if_empty=*/true);
+          } else if (envoy_api_v2_route_RouteMatch_has_regex(match)) {
+            AddStringField("      regex",
+                           envoy_api_v2_route_RouteMatch_regex(match), &fields,
+                           /*add_if_empty=*/true);
+          } else if (envoy_api_v2_route_RouteMatch_has_safe_regex(match)) {
+            fields.emplace_back("      safe_regex: <not printed>");
+          } else {
+            fields.emplace_back("      <unknown path matching type>");
+          }
+          // header matching
+          size_t num_headers;
+          envoy_api_v2_route_RouteMatch_headers(match, &num_headers);
+          if (num_headers > 0) {
+            fields.emplace_back(
+                absl::StrCat("      headers: <", num_headers, " element(s)>"));
+          }
+          fields.emplace_back("    }");
+        }
+        // action
+        if (envoy_api_v2_route_Route_has_route(route)) {
+          const envoy_api_v2_route_RouteAction* action =
+              envoy_api_v2_route_Route_route(route);
+          fields.emplace_back("    route {");
+          if (envoy_api_v2_route_RouteAction_has_cluster(action)) {
+            AddStringField("      cluster",
+                           envoy_api_v2_route_RouteAction_cluster(action),
+                           &fields);
+          } else if (envoy_api_v2_route_RouteAction_has_cluster_header(
+                         action)) {
+            AddStringField(
+                "      cluster_header",
+                envoy_api_v2_route_RouteAction_cluster_header(action), &fields);
+          } else if (envoy_api_v2_route_RouteAction_has_weighted_clusters(
+                         action)) {
+            fields.emplace_back("      weighted_clusters: <not printed>");
+          }
+          fields.emplace_back("    }");
+        } else if (envoy_api_v2_route_Route_has_redirect(route)) {
+          fields.emplace_back("    redirect: <not printed>");
+        } else if (envoy_api_v2_route_Route_has_direct_response(route)) {
+          fields.emplace_back("    direct_response: <not printed>");
+        } else if (envoy_api_v2_route_Route_has_filter_action(route)) {
+          fields.emplace_back("    filter_action: <not printed>");
+        }
+        fields.push_back("  }");
+      }
+      fields.push_back("}");
+    }
+    gpr_log(GPR_DEBUG, "[xds_client %p] RouteConfiguration: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+void MaybeLogCluster(XdsClient* client, TraceFlag* tracer,
+                     const envoy_api_v2_Cluster* cluster) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // name
+    AddStringField("name", envoy_api_v2_Cluster_name(cluster), &fields);
+    // type
+    if (envoy_api_v2_Cluster_has_type(cluster)) {
+      fields.emplace_back(
+          absl::StrCat("type: ", envoy_api_v2_Cluster_type(cluster)));
+    } else if (envoy_api_v2_Cluster_has_cluster_type(cluster)) {
+      fields.emplace_back("cluster_type: <not printed>");
+    } else {
+      fields.emplace_back("<unknown type>");
+    }
+    // eds_cluster_config
+    const envoy_api_v2_Cluster_EdsClusterConfig* eds_cluster_config =
+        envoy_api_v2_Cluster_eds_cluster_config(cluster);
+    if (eds_cluster_config != nullptr) {
+      fields.emplace_back("eds_cluster_config {");
+      // eds_config
+      const struct envoy_api_v2_core_ConfigSource* eds_config =
+          envoy_api_v2_Cluster_EdsClusterConfig_eds_config(eds_cluster_config);
+      if (eds_config != nullptr) {
+        if (envoy_api_v2_core_ConfigSource_has_ads(eds_config)) {
+          fields.emplace_back("  eds_config { ads {} }");
+        } else {
+          fields.emplace_back("  eds_config: <non-ADS type>");
+        }
+      }
+      // service_name
+      AddStringField("  service_name",
+                     envoy_api_v2_Cluster_EdsClusterConfig_service_name(
+                         eds_cluster_config),
+                     &fields);
+      fields.emplace_back("}");
+    }
+    // lb_policy
+    fields.emplace_back(
+        absl::StrCat("lb_policy: ", envoy_api_v2_Cluster_lb_policy(cluster)));
+    // lrs_server
+    const envoy_api_v2_core_ConfigSource* lrs_server =
+        envoy_api_v2_Cluster_lrs_server(cluster);
+    if (lrs_server != nullptr) {
+      if (envoy_api_v2_core_ConfigSource_has_self(lrs_server)) {
+        fields.emplace_back("lrs_server { self {} }");
+      } else {
+        fields.emplace_back("lrs_server: <non-self type>");
+      }
+    }
+    gpr_log(GPR_DEBUG, "[xds_client %p] Cluster: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+void MaybeLogClusterLoadAssignment(
+    XdsClient* client, TraceFlag* tracer,
+    const envoy_api_v2_ClusterLoadAssignment* cla) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // cluster_name
+    AddStringField("cluster_name",
+                   envoy_api_v2_ClusterLoadAssignment_cluster_name(cla),
+                   &fields);
+    // endpoints
+    size_t num_localities;
+    const struct envoy_api_v2_endpoint_LocalityLbEndpoints* const*
+        locality_endpoints =
+            envoy_api_v2_ClusterLoadAssignment_endpoints(cla, &num_localities);
+    for (size_t i = 0; i < num_localities; ++i) {
+      const auto* locality_endpoint = locality_endpoints[i];
+      fields.emplace_back("endpoints {");
+      // locality
+      const auto* locality =
+          envoy_api_v2_endpoint_LocalityLbEndpoints_locality(locality_endpoint);
+      if (locality != nullptr) {
+        fields.emplace_back("  locality {");
+        AddLocalityField(2, locality, &fields);
+        fields.emplace_back("  }");
+      }
+      // lb_endpoints
+      size_t num_lb_endpoints;
+      const envoy_api_v2_endpoint_LbEndpoint* const* lb_endpoints =
+          envoy_api_v2_endpoint_LocalityLbEndpoints_lb_endpoints(
+              locality_endpoint, &num_lb_endpoints);
+      for (size_t j = 0; j < num_lb_endpoints; ++j) {
+        const auto* lb_endpoint = lb_endpoints[j];
+        fields.emplace_back("  lb_endpoints {");
+        // health_status
+        uint32_t health_status =
+            envoy_api_v2_endpoint_LbEndpoint_health_status(lb_endpoint);
+        if (health_status > 0) {
+          fields.emplace_back(
+              absl::StrCat("    health_status: ", health_status));
+        }
+        // endpoint
+        const envoy_api_v2_endpoint_Endpoint* endpoint =
+            envoy_api_v2_endpoint_LbEndpoint_endpoint(lb_endpoint);
+        if (endpoint != nullptr) {
+          fields.emplace_back("    endpoint {");
+          // address
+          const auto* address =
+              envoy_api_v2_endpoint_Endpoint_address(endpoint);
+          if (address != nullptr) {
+            fields.emplace_back("      address {");
+            // socket_address
+            const auto* socket_address =
+                envoy_api_v2_core_Address_socket_address(address);
+            if (socket_address != nullptr) {
+              fields.emplace_back("        socket_address {");
+              // address
+              AddStringField(
+                  "          address",
+                  envoy_api_v2_core_SocketAddress_address(socket_address),
+                  &fields);
+              // port_value
+              if (envoy_api_v2_core_SocketAddress_has_port_value(
+                      socket_address)) {
+                fields.emplace_back(
+                    absl::StrCat("          port_value: ",
+                                 envoy_api_v2_core_SocketAddress_port_value(
+                                     socket_address)));
+              } else {
+                fields.emplace_back("        <non-numeric port>");
+              }
+              fields.emplace_back("        }");
+            } else {
+              fields.emplace_back("        <non-socket address>");
+            }
+            fields.emplace_back("      }");
+          }
+          fields.emplace_back("    }");
+        }
+        fields.emplace_back("  }");
+      }
+      // load_balancing_weight
+      const google_protobuf_UInt32Value* lb_weight =
+          envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(
+              locality_endpoint);
+      if (lb_weight != nullptr) {
+        fields.emplace_back(
+            absl::StrCat("  load_balancing_weight { value: ",
+                         google_protobuf_UInt32Value_value(lb_weight), " }"));
+      }
+      // priority
+      uint32_t priority =
+          envoy_api_v2_endpoint_LocalityLbEndpoints_priority(locality_endpoint);
+      if (priority > 0) {
+        fields.emplace_back(absl::StrCat("  priority: ", priority));
+      }
+      fields.emplace_back("}");
+    }
+    // policy
+    const envoy_api_v2_ClusterLoadAssignment_Policy* policy =
+        envoy_api_v2_ClusterLoadAssignment_policy(cla);
+    if (policy != nullptr) {
+      fields.emplace_back("policy {");
+      // drop_overloads
+      size_t num_drop_overloads;
+      const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const*
+          drop_overloads =
+              envoy_api_v2_ClusterLoadAssignment_Policy_drop_overloads(
+                  policy, &num_drop_overloads);
+      for (size_t i = 0; i < num_drop_overloads; ++i) {
+        auto* drop_overload = drop_overloads[i];
+        fields.emplace_back("  drop_overloads {");
+        // category
+        AddStringField(
+            "    category",
+            envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_category(
+                drop_overload),
+            &fields);
+        // drop_percentage
+        const auto* drop_percentage =
+            envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(
+                drop_overload);
+        if (drop_percentage != nullptr) {
+          fields.emplace_back("    drop_percentage {");
+          fields.emplace_back(absl::StrCat(
+              "      numerator: ",
+              envoy_type_FractionalPercent_numerator(drop_percentage)));
+          fields.emplace_back(absl::StrCat(
+              "      denominator: ",
+              envoy_type_FractionalPercent_denominator(drop_percentage)));
+          fields.emplace_back("    }");
+        }
+        fields.emplace_back("  }");
+      }
+      // overprovisioning_factor
+      fields.emplace_back("}");
+    }
+    gpr_log(GPR_DEBUG, "[xds_client %p] ClusterLoadAssignment: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+// Better match type has smaller value.
+enum MatchType {
+  EXACT_MATCH,
+  SUFFIX_MATCH,
+  PREFIX_MATCH,
+  UNIVERSE_MATCH,
+  INVALID_MATCH,
+};
+
+// Returns true if match succeeds.
+bool DomainMatch(MatchType match_type, std::string domain_pattern,
+                 std::string expected_host_name) {
+  // Normalize the args to lower-case. Domain matching is case-insensitive.
+  std::transform(domain_pattern.begin(), domain_pattern.end(),
+                 domain_pattern.begin(),
+                 [](unsigned char c) { return std::tolower(c); });
+  std::transform(expected_host_name.begin(), expected_host_name.end(),
+                 expected_host_name.begin(),
+                 [](unsigned char c) { return std::tolower(c); });
+  if (match_type == EXACT_MATCH) {
+    return domain_pattern == expected_host_name;
+  } else if (match_type == SUFFIX_MATCH) {
+    // Asterisk must match at least one char.
+    if (expected_host_name.size() < domain_pattern.size()) return false;
+    StringView pattern_suffix(domain_pattern.c_str() + 1);
+    StringView host_suffix(expected_host_name.c_str() +
+                           expected_host_name.size() - pattern_suffix.size());
+    return pattern_suffix == host_suffix;
+  } else if (match_type == PREFIX_MATCH) {
+    // Asterisk must match at least one char.
+    if (expected_host_name.size() < domain_pattern.size()) return false;
+    StringView pattern_prefix(domain_pattern.c_str(),
+                              domain_pattern.size() - 1);
+    StringView host_prefix(expected_host_name.c_str(), pattern_prefix.size());
+    return pattern_prefix == host_prefix;
+  } else {
+    return match_type == UNIVERSE_MATCH;
+  }
+}
+
+MatchType DomainPatternMatchType(const std::string& domain_pattern) {
+  if (domain_pattern.empty()) return INVALID_MATCH;
+  if (domain_pattern.find('*') == std::string::npos) return EXACT_MATCH;
+  if (domain_pattern == "*") return UNIVERSE_MATCH;
+  if (domain_pattern[0] == '*') return SUFFIX_MATCH;
+  if (domain_pattern[domain_pattern.size() - 1] == '*') return PREFIX_MATCH;
+  return INVALID_MATCH;
+}
+
+grpc_error* RouteConfigParse(
+    XdsClient* client, TraceFlag* tracer,
+    const envoy_api_v2_RouteConfiguration* route_config,
+    const std::string& expected_server_name, XdsApi::RdsUpdate* rds_update) {
+  MaybeLogRouteConfiguration(client, tracer, route_config);
+  // Get the virtual hosts.
+  size_t size;
+  const envoy_api_v2_route_VirtualHost* const* virtual_hosts =
+      envoy_api_v2_RouteConfiguration_virtual_hosts(route_config, &size);
+  // Find the best matched virtual host.
+  // The search order for 4 groups of domain patterns:
+  //   1. Exact match.
+  //   2. Suffix match (e.g., "*ABC").
+  //   3. Prefix match (e.g., "ABC*").
+  //   4. Universe match (i.e., "*").
+  // Within each group, longest match wins.
+  // If the same best matched domain pattern appears in multiple virtual hosts,
+  // the first matched virtual host wins.
+  const envoy_api_v2_route_VirtualHost* target_virtual_host = nullptr;
+  MatchType best_match_type = INVALID_MATCH;
+  size_t longest_match = 0;
+  // Check each domain pattern in each virtual host to determine the best
+  // matched virtual host.
+  for (size_t i = 0; i < size; ++i) {
+    size_t domain_size;
+    upb_strview const* domains =
+        envoy_api_v2_route_VirtualHost_domains(virtual_hosts[i], &domain_size);
+    for (size_t j = 0; j < domain_size; ++j) {
+      const std::string domain_pattern(domains[j].data, domains[j].size);
+      // Check the match type first. Skip the pattern if it's not better than
+      // current match.
+      const MatchType match_type = DomainPatternMatchType(domain_pattern);
+      if (match_type == INVALID_MATCH) {
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Invalid domain pattern.");
+      }
+      if (match_type > best_match_type) continue;
+      if (match_type == best_match_type &&
+          domain_pattern.size() <= longest_match) {
+        continue;
+      }
+      // Skip if match fails.
+      if (!DomainMatch(match_type, domain_pattern, expected_server_name)) {
+        continue;
+      }
+      // Choose this match.
+      target_virtual_host = virtual_hosts[i];
+      best_match_type = match_type;
+      longest_match = domain_pattern.size();
+      if (best_match_type == EXACT_MATCH) break;
+    }
+    if (best_match_type == EXACT_MATCH) break;
+  }
+  if (target_virtual_host == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No matched virtual host found in the route config.");
+  }
+  // Get the route list from the matched virtual host.
+  const envoy_api_v2_route_Route* const* routes =
+      envoy_api_v2_route_VirtualHost_routes(target_virtual_host, &size);
+  if (size < 1) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No route found in the virtual host.");
+  }
+  // Only look at the last one in the route list (the default route),
+  const envoy_api_v2_route_Route* route = routes[size - 1];
+  // Validate that the match field must have a prefix field which is an empty
+  // string.
+  const envoy_api_v2_route_RouteMatch* match =
+      envoy_api_v2_route_Route_match(route);
+  if (!envoy_api_v2_route_RouteMatch_has_prefix(match)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No prefix field found in RouteMatch.");
+  }
+  const upb_strview prefix = envoy_api_v2_route_RouteMatch_prefix(match);
+  if (!upb_strview_eql(prefix, upb_strview_makez(""))) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Prefix is not empty string.");
+  }
+  if (!envoy_api_v2_route_Route_has_route(route)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No RouteAction found in route.");
+  }
+  const envoy_api_v2_route_RouteAction* route_action =
+      envoy_api_v2_route_Route_route(route);
+  // Get the cluster in the RouteAction.
+  if (!envoy_api_v2_route_RouteAction_has_cluster(route_action)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No cluster found in RouteAction.");
+  }
+  const upb_strview cluster =
+      envoy_api_v2_route_RouteAction_cluster(route_action);
+  rds_update->cluster_name = std::string(cluster.data, cluster.size);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* LdsResponseParse(XdsClient* client, TraceFlag* tracer,
+                             const envoy_api_v2_DiscoveryResponse* response,
+                             const std::string& expected_server_name,
+                             absl::optional<XdsApi::LdsUpdate>* lds_update,
+                             upb_arena* arena) {
+  // Get the resources from the response.
+  size_t size;
+  const google_protobuf_Any* const* resources =
+      envoy_api_v2_DiscoveryResponse_resources(response, &size);
+  for (size_t i = 0; i < size; ++i) {
+    // Check the type_url of the resource.
+    const upb_strview type_url = google_protobuf_Any_type_url(resources[i]);
+    if (!upb_strview_eql(type_url, upb_strview_makez(XdsApi::kLdsTypeUrl))) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource is not LDS.");
+    }
+    // Decode the listener.
+    const upb_strview encoded_listener =
+        google_protobuf_Any_value(resources[i]);
+    const envoy_api_v2_Listener* listener = envoy_api_v2_Listener_parse(
+        encoded_listener.data, encoded_listener.size, arena);
+    if (listener == nullptr) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Can't decode listener.");
+    }
+    // Check listener name. Ignore unexpected listeners.
+    const upb_strview name = envoy_api_v2_Listener_name(listener);
+    const upb_strview expected_name =
+        upb_strview_makez(expected_server_name.c_str());
+    if (!upb_strview_eql(name, expected_name)) continue;
+    // Get api_listener and decode it to http_connection_manager.
+    const envoy_config_listener_v2_ApiListener* api_listener =
+        envoy_api_v2_Listener_api_listener(listener);
+    if (api_listener == nullptr) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Listener doesn't have ApiListener.");
+    }
+    const upb_strview encoded_api_listener = google_protobuf_Any_value(
+        envoy_config_listener_v2_ApiListener_api_listener(api_listener));
+    const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager*
+        http_connection_manager =
+            envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_parse(
+                encoded_api_listener.data, encoded_api_listener.size, arena);
+    // Found inlined route_config. Parse it to find the cluster_name.
+    if (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_route_config(
+            http_connection_manager)) {
+      const envoy_api_v2_RouteConfiguration* route_config =
+          envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_config(
+              http_connection_manager);
+      XdsApi::RdsUpdate rds_update;
+      grpc_error* error = RouteConfigParse(client, tracer, route_config,
+                                           expected_server_name, &rds_update);
+      if (error != GRPC_ERROR_NONE) return error;
+      lds_update->emplace();
+      (*lds_update)->rds_update.emplace(std::move(rds_update));
+      return GRPC_ERROR_NONE;
+    }
+    // Validate that RDS must be used to get the route_config dynamically.
+    if (!envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_rds(
+            http_connection_manager)) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "HttpConnectionManager neither has inlined route_config nor RDS.");
+    }
+    // Get the route_config_name.
+    const envoy_config_filter_network_http_connection_manager_v2_Rds* rds =
+        envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_rds(
+            http_connection_manager);
+    const upb_strview route_config_name =
+        envoy_config_filter_network_http_connection_manager_v2_Rds_route_config_name(
+            rds);
+    lds_update->emplace();
+    (*lds_update)->route_config_name =
+        std::string(route_config_name.data, route_config_name.size);
+    return GRPC_ERROR_NONE;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* RdsResponseParse(XdsClient* client, TraceFlag* tracer,
+                             const envoy_api_v2_DiscoveryResponse* response,
+                             const std::string& expected_server_name,
+                             const std::string& expected_route_config_name,
+                             absl::optional<XdsApi::RdsUpdate>* rds_update,
+                             upb_arena* arena) {
+  // Get the resources from the response.
+  size_t size;
+  const google_protobuf_Any* const* resources =
+      envoy_api_v2_DiscoveryResponse_resources(response, &size);
+  for (size_t i = 0; i < size; ++i) {
+    // Check the type_url of the resource.
+    const upb_strview type_url = google_protobuf_Any_type_url(resources[i]);
+    if (!upb_strview_eql(type_url, upb_strview_makez(XdsApi::kRdsTypeUrl))) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource is not RDS.");
+    }
+    // Decode the route_config.
+    const upb_strview encoded_route_config =
+        google_protobuf_Any_value(resources[i]);
+    const envoy_api_v2_RouteConfiguration* route_config =
+        envoy_api_v2_RouteConfiguration_parse(encoded_route_config.data,
+                                              encoded_route_config.size, arena);
+    if (route_config == nullptr) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Can't decode route_config.");
+    }
+    // Check route_config_name. Ignore unexpected route_config.
+    const upb_strview name = envoy_api_v2_RouteConfiguration_name(route_config);
+    const upb_strview expected_name =
+        upb_strview_makez(expected_route_config_name.c_str());
+    if (!upb_strview_eql(name, expected_name)) continue;
+    // Parse the route_config.
+    XdsApi::RdsUpdate local_rds_update;
+    grpc_error* error = RouteConfigParse(
+        client, tracer, route_config, expected_server_name, &local_rds_update);
+    if (error != GRPC_ERROR_NONE) return error;
+    rds_update->emplace(std::move(local_rds_update));
+    return GRPC_ERROR_NONE;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* CdsResponseParse(XdsClient* client, TraceFlag* tracer,
+                             const envoy_api_v2_DiscoveryResponse* response,
+                             const std::set<StringView>& expected_cluster_names,
+                             XdsApi::CdsUpdateMap* cds_update_map,
+                             upb_arena* arena) {
+  // Get the resources from the response.
+  size_t size;
+  const google_protobuf_Any* const* resources =
+      envoy_api_v2_DiscoveryResponse_resources(response, &size);
+  // Parse all the resources in the CDS response.
+  for (size_t i = 0; i < size; ++i) {
+    XdsApi::CdsUpdate cds_update;
+    // Check the type_url of the resource.
+    const upb_strview type_url = google_protobuf_Any_type_url(resources[i]);
+    if (!upb_strview_eql(type_url, upb_strview_makez(XdsApi::kCdsTypeUrl))) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource is not CDS.");
+    }
+    // Decode the cluster.
+    const upb_strview encoded_cluster = google_protobuf_Any_value(resources[i]);
+    const envoy_api_v2_Cluster* cluster = envoy_api_v2_Cluster_parse(
+        encoded_cluster.data, encoded_cluster.size, arena);
+    if (cluster == nullptr) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Can't decode cluster.");
+    }
+    MaybeLogCluster(client, tracer, cluster);
+    // Ignore unexpected cluster names.
+    upb_strview cluster_name = envoy_api_v2_Cluster_name(cluster);
+    StringView cluster_name_strview(cluster_name.data, cluster_name.size);
+    if (expected_cluster_names.find(cluster_name_strview) ==
+        expected_cluster_names.end()) {
+      continue;
+    }
+    // Check the cluster_discovery_type.
+    if (!envoy_api_v2_Cluster_has_type(cluster)) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("DiscoveryType not found.");
+    }
+    if (envoy_api_v2_Cluster_type(cluster) != envoy_api_v2_Cluster_EDS) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("DiscoveryType is not EDS.");
+    }
+    // Check the EDS config source.
+    const envoy_api_v2_Cluster_EdsClusterConfig* eds_cluster_config =
+        envoy_api_v2_Cluster_eds_cluster_config(cluster);
+    const envoy_api_v2_core_ConfigSource* eds_config =
+        envoy_api_v2_Cluster_EdsClusterConfig_eds_config(eds_cluster_config);
+    if (!envoy_api_v2_core_ConfigSource_has_ads(eds_config)) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("ConfigSource is not ADS.");
+    }
+    // Record EDS service_name (if any).
+    upb_strview service_name =
+        envoy_api_v2_Cluster_EdsClusterConfig_service_name(eds_cluster_config);
+    if (service_name.size != 0) {
+      cds_update.eds_service_name =
+          std::string(service_name.data, service_name.size);
+    }
+    // Check the LB policy.
+    if (envoy_api_v2_Cluster_lb_policy(cluster) !=
+        envoy_api_v2_Cluster_ROUND_ROBIN) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "LB policy is not ROUND_ROBIN.");
+    }
+    // Record LRS server name (if any).
+    const envoy_api_v2_core_ConfigSource* lrs_server =
+        envoy_api_v2_Cluster_lrs_server(cluster);
+    if (lrs_server != nullptr) {
+      if (!envoy_api_v2_core_ConfigSource_has_self(lrs_server)) {
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "ConfigSource is not self.");
+      }
+      cds_update.lrs_load_reporting_server_name.emplace("");
+    }
+    cds_update_map->emplace(std::string(cluster_name.data, cluster_name.size),
+                            std::move(cds_update));
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* ServerAddressParseAndAppend(
+    const envoy_api_v2_endpoint_LbEndpoint* lb_endpoint,
+    ServerAddressList* list) {
+  // If health_status is not HEALTHY or UNKNOWN, skip this endpoint.
+  const int32_t health_status =
+      envoy_api_v2_endpoint_LbEndpoint_health_status(lb_endpoint);
+  if (health_status != envoy_api_v2_core_UNKNOWN &&
+      health_status != envoy_api_v2_core_HEALTHY) {
+    return GRPC_ERROR_NONE;
+  }
+  // Find the ip:port.
+  const envoy_api_v2_endpoint_Endpoint* endpoint =
+      envoy_api_v2_endpoint_LbEndpoint_endpoint(lb_endpoint);
+  const envoy_api_v2_core_Address* address =
+      envoy_api_v2_endpoint_Endpoint_address(endpoint);
+  const envoy_api_v2_core_SocketAddress* socket_address =
+      envoy_api_v2_core_Address_socket_address(address);
+  upb_strview address_strview =
+      envoy_api_v2_core_SocketAddress_address(socket_address);
+  uint32_t port = envoy_api_v2_core_SocketAddress_port_value(socket_address);
+  if (GPR_UNLIKELY(port >> 16) != 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Invalid port.");
+  }
+  // Populate grpc_resolved_address.
+  grpc_resolved_address addr;
+  char* address_str = static_cast<char*>(gpr_malloc(address_strview.size + 1));
+  memcpy(address_str, address_strview.data, address_strview.size);
+  address_str[address_strview.size] = '\0';
+  grpc_string_to_sockaddr(&addr, address_str, port);
+  gpr_free(address_str);
+  // Append the address to the list.
+  list->emplace_back(addr, nullptr);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* LocalityParse(
+    const envoy_api_v2_endpoint_LocalityLbEndpoints* locality_lb_endpoints,
+    XdsApi::PriorityListUpdate::LocalityMap::Locality* output_locality) {
+  // Parse LB weight.
+  const google_protobuf_UInt32Value* lb_weight =
+      envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(
+          locality_lb_endpoints);
+  // If LB weight is not specified, it means this locality is assigned no load.
+  // TODO(juanlishen): When we support CDS to configure the inter-locality
+  // policy, we should change the LB weight handling.
+  output_locality->lb_weight =
+      lb_weight != nullptr ? google_protobuf_UInt32Value_value(lb_weight) : 0;
+  if (output_locality->lb_weight == 0) return GRPC_ERROR_NONE;
+  // Parse locality name.
+  const envoy_api_v2_core_Locality* locality =
+      envoy_api_v2_endpoint_LocalityLbEndpoints_locality(locality_lb_endpoints);
+  upb_strview region = envoy_api_v2_core_Locality_region(locality);
+  upb_strview zone = envoy_api_v2_core_Locality_region(locality);
+  upb_strview sub_zone = envoy_api_v2_core_Locality_sub_zone(locality);
+  output_locality->name = MakeRefCounted<XdsLocalityName>(
+      std::string(region.data, region.size), std::string(zone.data, zone.size),
+      std::string(sub_zone.data, sub_zone.size));
+  // Parse the addresses.
+  size_t size;
+  const envoy_api_v2_endpoint_LbEndpoint* const* lb_endpoints =
+      envoy_api_v2_endpoint_LocalityLbEndpoints_lb_endpoints(
+          locality_lb_endpoints, &size);
+  for (size_t i = 0; i < size; ++i) {
+    grpc_error* error = ServerAddressParseAndAppend(
+        lb_endpoints[i], &output_locality->serverlist);
+    if (error != GRPC_ERROR_NONE) return error;
+  }
+  // Parse the priority.
+  output_locality->priority =
+      envoy_api_v2_endpoint_LocalityLbEndpoints_priority(locality_lb_endpoints);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* DropParseAndAppend(
+    const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* drop_overload,
+    XdsApi::DropConfig* drop_config) {
+  // Get the category.
+  upb_strview category =
+      envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_category(
+          drop_overload);
+  if (category.size == 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Empty drop category name");
+  }
+  // Get the drop rate (per million).
+  const envoy_type_FractionalPercent* drop_percentage =
+      envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(
+          drop_overload);
+  uint32_t numerator = envoy_type_FractionalPercent_numerator(drop_percentage);
+  const auto denominator =
+      static_cast<envoy_type_FractionalPercent_DenominatorType>(
+          envoy_type_FractionalPercent_denominator(drop_percentage));
+  // Normalize to million.
+  switch (denominator) {
+    case envoy_type_FractionalPercent_HUNDRED:
+      numerator *= 10000;
+      break;
+    case envoy_type_FractionalPercent_TEN_THOUSAND:
+      numerator *= 100;
+      break;
+    case envoy_type_FractionalPercent_MILLION:
+      break;
+    default:
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Unknown denominator type");
+  }
+  // Cap numerator to 1000000.
+  numerator = GPR_MIN(numerator, 1000000);
+  drop_config->AddCategory(std::string(category.data, category.size),
+                           numerator);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* EdsResponseParse(
+    XdsClient* client, TraceFlag* tracer,
+    const envoy_api_v2_DiscoveryResponse* response,
+    const std::set<StringView>& expected_eds_service_names,
+    XdsApi::EdsUpdateMap* eds_update_map, upb_arena* arena) {
+  // Get the resources from the response.
+  size_t size;
+  const google_protobuf_Any* const* resources =
+      envoy_api_v2_DiscoveryResponse_resources(response, &size);
+  for (size_t i = 0; i < size; ++i) {
+    XdsApi::EdsUpdate eds_update;
+    // Check the type_url of the resource.
+    upb_strview type_url = google_protobuf_Any_type_url(resources[i]);
+    if (!upb_strview_eql(type_url, upb_strview_makez(XdsApi::kEdsTypeUrl))) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource is not EDS.");
+    }
+    // Get the cluster_load_assignment.
+    upb_strview encoded_cluster_load_assignment =
+        google_protobuf_Any_value(resources[i]);
+    envoy_api_v2_ClusterLoadAssignment* cluster_load_assignment =
+        envoy_api_v2_ClusterLoadAssignment_parse(
+            encoded_cluster_load_assignment.data,
+            encoded_cluster_load_assignment.size, arena);
+    if (cluster_load_assignment == nullptr) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Can't parse cluster_load_assignment.");
+    }
+    MaybeLogClusterLoadAssignment(client, tracer, cluster_load_assignment);
+    // Check the cluster name (which actually means eds_service_name). Ignore
+    // unexpected names.
+    upb_strview cluster_name = envoy_api_v2_ClusterLoadAssignment_cluster_name(
+        cluster_load_assignment);
+    StringView cluster_name_strview(cluster_name.data, cluster_name.size);
+    if (expected_eds_service_names.find(cluster_name_strview) ==
+        expected_eds_service_names.end()) {
+      continue;
+    }
+    // Get the endpoints.
+    size_t locality_size;
+    const envoy_api_v2_endpoint_LocalityLbEndpoints* const* endpoints =
+        envoy_api_v2_ClusterLoadAssignment_endpoints(cluster_load_assignment,
+                                                     &locality_size);
+    for (size_t j = 0; j < locality_size; ++j) {
+      XdsApi::PriorityListUpdate::LocalityMap::Locality locality;
+      grpc_error* error = LocalityParse(endpoints[j], &locality);
+      if (error != GRPC_ERROR_NONE) return error;
+      // Filter out locality with weight 0.
+      if (locality.lb_weight == 0) continue;
+      eds_update.priority_list_update.Add(locality);
+    }
+    for (uint32_t priority = 0;
+         priority < eds_update.priority_list_update.size(); ++priority) {
+      auto* locality_map = eds_update.priority_list_update.Find(priority);
+      if (locality_map == nullptr || locality_map->size() == 0) {
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "EDS update includes sparse priority list");
+      }
+    }
+    // Get the drop config.
+    eds_update.drop_config = MakeRefCounted<XdsApi::DropConfig>();
+    const envoy_api_v2_ClusterLoadAssignment_Policy* policy =
+        envoy_api_v2_ClusterLoadAssignment_policy(cluster_load_assignment);
+    if (policy != nullptr) {
+      size_t drop_size;
+      const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const*
+          drop_overload =
+              envoy_api_v2_ClusterLoadAssignment_Policy_drop_overloads(
+                  policy, &drop_size);
+      for (size_t j = 0; j < drop_size; ++j) {
+        grpc_error* error =
+            DropParseAndAppend(drop_overload[j], eds_update.drop_config.get());
+        if (error != GRPC_ERROR_NONE) return error;
+      }
+    }
+    // Validate the update content.
+    if (eds_update.priority_list_update.empty() &&
+        !eds_update.drop_config->drop_all()) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "EDS response doesn't contain any valid "
+          "locality but doesn't require to drop all calls.");
+    }
+    eds_update_map->emplace(std::string(cluster_name.data, cluster_name.size),
+                            std::move(eds_update));
+  }
+  return GRPC_ERROR_NONE;
+}
+
+}  // namespace
+
+grpc_error* XdsApi::ParseAdsResponse(
+    const grpc_slice& encoded_response, const std::string& expected_server_name,
+    const std::string& expected_route_config_name,
+    const std::set<StringView>& expected_cluster_names,
+    const std::set<StringView>& expected_eds_service_names,
+    absl::optional<LdsUpdate>* lds_update,
+    absl::optional<RdsUpdate>* rds_update, CdsUpdateMap* cds_update_map,
+    EdsUpdateMap* eds_update_map, std::string* version, std::string* nonce,
+    std::string* type_url) {
+  upb::Arena arena;
+  // Decode the response.
+  const envoy_api_v2_DiscoveryResponse* response =
+      envoy_api_v2_DiscoveryResponse_parse(
+          reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(encoded_response)),
+          GRPC_SLICE_LENGTH(encoded_response), arena.ptr());
+  // If decoding fails, output an empty type_url and return.
+  if (response == nullptr) {
+    *type_url = "";
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Can't decode the whole response.");
+  }
+  MaybeLogDiscoveryResponse(client_, tracer_, response);
+  // Record the type_url, the version_info, and the nonce of the response.
+  upb_strview type_url_strview =
+      envoy_api_v2_DiscoveryResponse_type_url(response);
+  *type_url = std::string(type_url_strview.data, type_url_strview.size);
+  upb_strview version_info =
+      envoy_api_v2_DiscoveryResponse_version_info(response);
+  *version = std::string(version_info.data, version_info.size);
+  upb_strview nonce_strview = envoy_api_v2_DiscoveryResponse_nonce(response);
+  *nonce = std::string(nonce_strview.data, nonce_strview.size);
+  // Parse the response according to the resource type.
+  if (*type_url == kLdsTypeUrl) {
+    return LdsResponseParse(client_, tracer_, response, expected_server_name,
+                            lds_update, arena.ptr());
+  } else if (*type_url == kRdsTypeUrl) {
+    return RdsResponseParse(client_, tracer_, response, expected_server_name,
+                            expected_route_config_name, rds_update,
+                            arena.ptr());
+  } else if (*type_url == kCdsTypeUrl) {
+    return CdsResponseParse(client_, tracer_, response, expected_cluster_names,
+                            cds_update_map, arena.ptr());
+  } else if (*type_url == kEdsTypeUrl) {
+    return EdsResponseParse(client_, tracer_, response,
+                            expected_eds_service_names, eds_update_map,
+                            arena.ptr());
+  } else {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Unsupported ADS resource type.");
+  }
+}
+
+namespace {
+
+void MaybeLogLrsRequest(
+    XdsClient* client, TraceFlag* tracer,
+    const envoy_service_load_stats_v2_LoadStatsRequest* request) {
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer) &&
+      gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+    // TODO(roth): When we can upgrade upb, use upb textformat code to dump
+    // the raw proto instead of doing this manually.
+    std::vector<std::string> fields;
+    // node
+    const auto* node =
+        envoy_service_load_stats_v2_LoadStatsRequest_node(request);
+    if (node != nullptr) {
+      AddNodeLogFields(node, &fields);
+    }
+    // cluster_stats
+    size_t num_cluster_stats;
+    const struct envoy_api_v2_endpoint_ClusterStats* const* cluster_stats =
+        envoy_service_load_stats_v2_LoadStatsRequest_cluster_stats(
+            request, &num_cluster_stats);
+    for (size_t i = 0; i < num_cluster_stats; ++i) {
+      const auto* cluster_stat = cluster_stats[i];
+      fields.emplace_back("cluster_stats {");
+      // cluster_name
+      AddStringField(
+          "  cluster_name",
+          envoy_api_v2_endpoint_ClusterStats_cluster_name(cluster_stat),
+          &fields);
+      // cluster_service_name
+      AddStringField(
+          "  cluster_service_name",
+          envoy_api_v2_endpoint_ClusterStats_cluster_service_name(cluster_stat),
+          &fields);
+      // upstream_locality_stats
+      size_t num_stats;
+      const envoy_api_v2_endpoint_UpstreamLocalityStats* const* stats =
+          envoy_api_v2_endpoint_ClusterStats_upstream_locality_stats(
+              cluster_stat, &num_stats);
+      for (size_t j = 0; j < num_stats; ++j) {
+        const auto* stat = stats[j];
+        fields.emplace_back("  upstream_locality_stats {");
+        // locality
+        const auto* locality =
+            envoy_api_v2_endpoint_UpstreamLocalityStats_locality(stat);
+        if (locality != nullptr) {
+          fields.emplace_back("    locality {");
+          AddLocalityField(3, locality, &fields);
+          fields.emplace_back("    }");
+        }
+        // total_successful_requests
+        fields.emplace_back(absl::StrCat(
+            "    total_successful_requests: ",
+            envoy_api_v2_endpoint_UpstreamLocalityStats_total_successful_requests(
+                stat)));
+        // total_requests_in_progress
+        fields.emplace_back(absl::StrCat(
+            "    total_requests_in_progress: ",
+            envoy_api_v2_endpoint_UpstreamLocalityStats_total_requests_in_progress(
+                stat)));
+        // total_error_requests
+        fields.emplace_back(absl::StrCat(
+            "    total_error_requests: ",
+            envoy_api_v2_endpoint_UpstreamLocalityStats_total_error_requests(
+                stat)));
+        // total_issued_requests
+        fields.emplace_back(absl::StrCat(
+            "    total_issued_requests: ",
+            envoy_api_v2_endpoint_UpstreamLocalityStats_total_issued_requests(
+                stat)));
+        fields.emplace_back("  }");
+      }
+      // total_dropped_requests
+      fields.emplace_back(absl::StrCat(
+          "  total_dropped_requests: ",
+          envoy_api_v2_endpoint_ClusterStats_total_dropped_requests(
+              cluster_stat)));
+      // dropped_requests
+      size_t num_drops;
+      const envoy_api_v2_endpoint_ClusterStats_DroppedRequests* const* drops =
+          envoy_api_v2_endpoint_ClusterStats_dropped_requests(cluster_stat,
+                                                              &num_drops);
+      for (size_t j = 0; j < num_drops; ++j) {
+        const auto* drop = drops[j];
+        fields.emplace_back("  dropped_requests {");
+        // category
+        AddStringField(
+            "    category",
+            envoy_api_v2_endpoint_ClusterStats_DroppedRequests_category(drop),
+            &fields);
+        // dropped_count
+        fields.emplace_back(absl::StrCat(
+            "    dropped_count: ",
+            envoy_api_v2_endpoint_ClusterStats_DroppedRequests_dropped_count(
+                drop)));
+        fields.emplace_back("  }");
+      }
+      // load_report_interval
+      const auto* load_report_interval =
+          envoy_api_v2_endpoint_ClusterStats_load_report_interval(cluster_stat);
+      if (load_report_interval != nullptr) {
+        fields.emplace_back("  load_report_interval {");
+        fields.emplace_back(absl::StrCat(
+            "    seconds: ",
+            google_protobuf_Duration_seconds(load_report_interval)));
+        fields.emplace_back(
+            absl::StrCat("    nanos: ",
+                         google_protobuf_Duration_nanos(load_report_interval)));
+        fields.emplace_back("  }");
+      }
+      fields.emplace_back("}");
+    }
+    gpr_log(GPR_DEBUG, "[xds_client %p] constructed LRS request: %s", client,
+            absl::StrJoin(fields, "\n").c_str());
+  }
+}
+
+grpc_slice SerializeLrsRequest(
+    const envoy_service_load_stats_v2_LoadStatsRequest* request,
+    upb_arena* arena) {
+  size_t output_length;
+  char* output = envoy_service_load_stats_v2_LoadStatsRequest_serialize(
+      request, arena, &output_length);
+  return grpc_slice_from_copied_buffer(output, output_length);
+}
+
+}  // namespace
+
+grpc_slice XdsApi::CreateLrsInitialRequest(const std::string& server_name) {
+  upb::Arena arena;
+  // Create a request.
+  envoy_service_load_stats_v2_LoadStatsRequest* request =
+      envoy_service_load_stats_v2_LoadStatsRequest_new(arena.ptr());
+  // Populate node.
+  envoy_api_v2_core_Node* node_msg =
+      envoy_service_load_stats_v2_LoadStatsRequest_mutable_node(request,
+                                                                arena.ptr());
+  PopulateNode(arena.ptr(), node_, build_version_, user_agent_name_,
+               server_name, node_msg);
+  MaybeLogLrsRequest(client_, tracer_, request);
+  return SerializeLrsRequest(request, arena.ptr());
+}
+
+namespace {
+
+void LocalityStatsPopulate(envoy_api_v2_endpoint_UpstreamLocalityStats* output,
+                           const XdsLocalityName& locality_name,
+                           const XdsClusterLocalityStats::Snapshot& snapshot,
+                           upb_arena* arena) {
+  // Set locality.
+  envoy_api_v2_core_Locality* locality =
+      envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_locality(output,
+                                                                   arena);
+  if (!locality_name.region().empty()) {
+    envoy_api_v2_core_Locality_set_region(
+        locality, upb_strview_makez(locality_name.region().c_str()));
+  }
+  if (!locality_name.zone().empty()) {
+    envoy_api_v2_core_Locality_set_zone(
+        locality, upb_strview_makez(locality_name.zone().c_str()));
+  }
+  if (!locality_name.sub_zone().empty()) {
+    envoy_api_v2_core_Locality_set_sub_zone(
+        locality, upb_strview_makez(locality_name.sub_zone().c_str()));
+  }
+  // Set total counts.
+  envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_successful_requests(
+      output, snapshot.total_successful_requests);
+  envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_requests_in_progress(
+      output, snapshot.total_requests_in_progress);
+  envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_error_requests(
+      output, snapshot.total_error_requests);
+  envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_issued_requests(
+      output, snapshot.total_issued_requests);
+  // Add backend metrics.
+  for (const auto& p : snapshot.backend_metrics) {
+    const std::string& metric_name = p.first;
+    const XdsClusterLocalityStats::BackendMetric& metric_value = p.second;
+    envoy_api_v2_endpoint_EndpointLoadMetricStats* load_metric =
+        envoy_api_v2_endpoint_UpstreamLocalityStats_add_load_metric_stats(
+            output, arena);
+    envoy_api_v2_endpoint_EndpointLoadMetricStats_set_metric_name(
+        load_metric, upb_strview_make(metric_name.data(), metric_name.size()));
+    envoy_api_v2_endpoint_EndpointLoadMetricStats_set_num_requests_finished_with_metric(
+        load_metric, metric_value.num_requests_finished_with_metric);
+    envoy_api_v2_endpoint_EndpointLoadMetricStats_set_total_metric_value(
+        load_metric, metric_value.total_metric_value);
+  }
+}
+
+}  // namespace
+
+grpc_slice XdsApi::CreateLrsRequest(
+    ClusterLoadReportMap cluster_load_report_map) {
+  upb::Arena arena;
+  // Create a request.
+  envoy_service_load_stats_v2_LoadStatsRequest* request =
+      envoy_service_load_stats_v2_LoadStatsRequest_new(arena.ptr());
+  for (auto& p : cluster_load_report_map) {
+    const std::string& cluster_name = p.first.first;
+    const std::string& eds_service_name = p.first.second;
+    const ClusterLoadReport& load_report = p.second;
+    // Add cluster stats.
+    envoy_api_v2_endpoint_ClusterStats* cluster_stats =
+        envoy_service_load_stats_v2_LoadStatsRequest_add_cluster_stats(
+            request, arena.ptr());
+    // Set the cluster name.
+    envoy_api_v2_endpoint_ClusterStats_set_cluster_name(
+        cluster_stats,
+        upb_strview_make(cluster_name.data(), cluster_name.size()));
+    // Set EDS service name, if non-empty.
+    if (!eds_service_name.empty()) {
+      envoy_api_v2_endpoint_ClusterStats_set_cluster_service_name(
+          cluster_stats,
+          upb_strview_make(eds_service_name.data(), eds_service_name.size()));
+    }
+    // Add locality stats.
+    for (const auto& p : load_report.locality_stats) {
+      const XdsLocalityName& locality_name = *p.first;
+      const auto& snapshot = p.second;
+      envoy_api_v2_endpoint_UpstreamLocalityStats* locality_stats =
+          envoy_api_v2_endpoint_ClusterStats_add_upstream_locality_stats(
+              cluster_stats, arena.ptr());
+      LocalityStatsPopulate(locality_stats, locality_name, snapshot,
+                            arena.ptr());
+    }
+    // Add dropped requests.
+    uint64_t total_dropped_requests = 0;
+    for (const auto& p : load_report.dropped_requests) {
+      const char* category = p.first.c_str();
+      const uint64_t count = p.second;
+      envoy_api_v2_endpoint_ClusterStats_DroppedRequests* dropped_requests =
+          envoy_api_v2_endpoint_ClusterStats_add_dropped_requests(cluster_stats,
+                                                                  arena.ptr());
+      envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_category(
+          dropped_requests, upb_strview_makez(category));
+      envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_dropped_count(
+          dropped_requests, count);
+      total_dropped_requests += count;
+    }
+    // Set total dropped requests.
+    envoy_api_v2_endpoint_ClusterStats_set_total_dropped_requests(
+        cluster_stats, total_dropped_requests);
+    // Set real load report interval.
+    gpr_timespec timespec =
+        grpc_millis_to_timespec(load_report.load_report_interval, GPR_TIMESPAN);
+    google_protobuf_Duration* load_report_interval =
+        envoy_api_v2_endpoint_ClusterStats_mutable_load_report_interval(
+            cluster_stats, arena.ptr());
+    google_protobuf_Duration_set_seconds(load_report_interval, timespec.tv_sec);
+    google_protobuf_Duration_set_nanos(load_report_interval, timespec.tv_nsec);
+  }
+  MaybeLogLrsRequest(client_, tracer_, request);
+  return SerializeLrsRequest(request, arena.ptr());
+}
+
+grpc_error* XdsApi::ParseLrsResponse(const grpc_slice& encoded_response,
+                                     std::set<std::string>* cluster_names,
+                                     grpc_millis* load_reporting_interval) {
+  upb::Arena arena;
+  // Decode the response.
+  const envoy_service_load_stats_v2_LoadStatsResponse* decoded_response =
+      envoy_service_load_stats_v2_LoadStatsResponse_parse(
+          reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(encoded_response)),
+          GRPC_SLICE_LENGTH(encoded_response), arena.ptr());
+  // Parse the response.
+  if (decoded_response == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Can't decode response.");
+  }
+  // Store the cluster names.
+  size_t size;
+  const upb_strview* clusters =
+      envoy_service_load_stats_v2_LoadStatsResponse_clusters(decoded_response,
+                                                             &size);
+  for (size_t i = 0; i < size; ++i) {
+    cluster_names->emplace(clusters[i].data, clusters[i].size);
+  }
+  // Get the load report interval.
+  const google_protobuf_Duration* load_reporting_interval_duration =
+      envoy_service_load_stats_v2_LoadStatsResponse_load_reporting_interval(
+          decoded_response);
+  gpr_timespec timespec{
+      google_protobuf_Duration_seconds(load_reporting_interval_duration),
+      google_protobuf_Duration_nanos(load_reporting_interval_duration),
+      GPR_TIMESPAN};
+  *load_reporting_interval = gpr_time_to_millis(timespec);
+  return GRPC_ERROR_NONE;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.h
new file mode 100644
index 0000000..0fc4a18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_api.h	
@@ -0,0 +1,280 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+#include <set>
+
+#include "absl/types/optional.h"
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+
+namespace grpc_core {
+
+class XdsClient;
+
+class XdsApi {
+ public:
+  static const char* kLdsTypeUrl;
+  static const char* kRdsTypeUrl;
+  static const char* kCdsTypeUrl;
+  static const char* kEdsTypeUrl;
+
+  struct RdsUpdate {
+    // The name to use in the CDS request.
+    std::string cluster_name;
+
+    bool operator==(const RdsUpdate& other) const {
+      return cluster_name == other.cluster_name;
+    }
+  };
+
+  // TODO(roth): When we can use absl::variant<>, consider using that
+  // here, to enforce the fact that only one of the two fields can be set.
+  struct LdsUpdate {
+    // The name to use in the RDS request.
+    std::string route_config_name;
+    // The name to use in the CDS request. Present if the LDS response has it
+    // inlined.
+    absl::optional<RdsUpdate> rds_update;
+
+    bool operator==(const LdsUpdate& other) const {
+      return route_config_name == other.route_config_name &&
+             rds_update == other.rds_update;
+    }
+  };
+
+  using LdsUpdateMap = std::map<std::string /*server_name*/, LdsUpdate>;
+
+  using RdsUpdateMap = std::map<std::string /*route_config_name*/, RdsUpdate>;
+
+  struct CdsUpdate {
+    // The name to use in the EDS request.
+    // If empty, the cluster name will be used.
+    std::string eds_service_name;
+    // The LRS server to use for load reporting.
+    // If not set, load reporting will be disabled.
+    // If set to the empty string, will use the same server we obtained the CDS
+    // data from.
+    absl::optional<std::string> lrs_load_reporting_server_name;
+  };
+
+  using CdsUpdateMap = std::map<std::string /*cluster_name*/, CdsUpdate>;
+
+  class PriorityListUpdate {
+   public:
+    struct LocalityMap {
+      struct Locality {
+        bool operator==(const Locality& other) const {
+          return *name == *other.name && serverlist == other.serverlist &&
+                 lb_weight == other.lb_weight && priority == other.priority;
+        }
+
+        // This comparator only compares the locality names.
+        struct Less {
+          bool operator()(const Locality& lhs, const Locality& rhs) const {
+            return XdsLocalityName::Less()(lhs.name, rhs.name);
+          }
+        };
+
+        RefCountedPtr<XdsLocalityName> name;
+        ServerAddressList serverlist;
+        uint32_t lb_weight;
+        uint32_t priority;
+      };
+
+      bool Contains(const RefCountedPtr<XdsLocalityName>& name) const {
+        return localities.find(name) != localities.end();
+      }
+
+      size_t size() const { return localities.size(); }
+
+      std::map<RefCountedPtr<XdsLocalityName>, Locality, XdsLocalityName::Less>
+          localities;
+    };
+
+    bool operator==(const PriorityListUpdate& other) const;
+    bool operator!=(const PriorityListUpdate& other) const {
+      return !(*this == other);
+    }
+
+    void Add(LocalityMap::Locality locality);
+
+    const LocalityMap* Find(uint32_t priority) const;
+
+    bool Contains(uint32_t priority) const {
+      return priority < priorities_.size();
+    }
+    bool Contains(const RefCountedPtr<XdsLocalityName>& name);
+
+    bool empty() const { return priorities_.empty(); }
+    size_t size() const { return priorities_.size(); }
+
+    // Callers should make sure the priority list is non-empty.
+    uint32_t LowestPriority() const {
+      return static_cast<uint32_t>(priorities_.size()) - 1;
+    }
+
+   private:
+    InlinedVector<LocalityMap, 2> priorities_;
+  };
+
+  // There are two phases of accessing this class's content:
+  // 1. to initialize in the control plane combiner;
+  // 2. to use in the data plane combiner.
+  // So no additional synchronization is needed.
+  class DropConfig : public RefCounted<DropConfig> {
+   public:
+    struct DropCategory {
+      bool operator==(const DropCategory& other) const {
+        return name == other.name &&
+               parts_per_million == other.parts_per_million;
+      }
+
+      std::string name;
+      const uint32_t parts_per_million;
+    };
+
+    using DropCategoryList = InlinedVector<DropCategory, 2>;
+
+    void AddCategory(std::string name, uint32_t parts_per_million) {
+      drop_category_list_.emplace_back(
+          DropCategory{std::move(name), parts_per_million});
+      if (parts_per_million == 1000000) drop_all_ = true;
+    }
+
+    // The only method invoked from the data plane combiner.
+    bool ShouldDrop(const std::string** category_name) const;
+
+    const DropCategoryList& drop_category_list() const {
+      return drop_category_list_;
+    }
+
+    bool drop_all() const { return drop_all_; }
+
+    bool operator==(const DropConfig& other) const {
+      return drop_category_list_ == other.drop_category_list_;
+    }
+    bool operator!=(const DropConfig& other) const { return !(*this == other); }
+
+   private:
+    DropCategoryList drop_category_list_;
+    bool drop_all_ = false;
+  };
+
+  struct EdsUpdate {
+    PriorityListUpdate priority_list_update;
+    RefCountedPtr<DropConfig> drop_config;
+  };
+
+  using EdsUpdateMap = std::map<std::string /*eds_service_name*/, EdsUpdate>;
+
+  struct ClusterLoadReport {
+    XdsClusterDropStats::DroppedRequestsMap dropped_requests;
+    std::map<RefCountedPtr<XdsLocalityName>, XdsClusterLocalityStats::Snapshot,
+             XdsLocalityName::Less>
+        locality_stats;
+    grpc_millis load_report_interval;
+  };
+  using ClusterLoadReportMap = std::map<
+      std::pair<std::string /*cluster_name*/, std::string /*eds_service_name*/>,
+      ClusterLoadReport>;
+
+  XdsApi(XdsClient* client, TraceFlag* tracer, const XdsBootstrap::Node* node);
+
+  // Creates a request to nack an unsupported resource type.
+  // Takes ownership of \a error.
+  grpc_slice CreateUnsupportedTypeNackRequest(const std::string& type_url,
+                                              const std::string& nonce,
+                                              grpc_error* error);
+
+  // Creates an LDS request querying \a server_name.
+  // Takes ownership of \a error.
+  grpc_slice CreateLdsRequest(const std::string& server_name,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates an RDS request querying \a route_config_name.
+  // Takes ownership of \a error.
+  grpc_slice CreateRdsRequest(const std::string& route_config_name,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates a CDS request querying \a cluster_names.
+  // Takes ownership of \a error.
+  grpc_slice CreateCdsRequest(const std::set<StringView>& cluster_names,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Creates an EDS request querying \a eds_service_names.
+  // Takes ownership of \a error.
+  grpc_slice CreateEdsRequest(const std::set<StringView>& eds_service_names,
+                              const std::string& version,
+                              const std::string& nonce, grpc_error* error,
+                              bool populate_node);
+
+  // Parses the ADS response and outputs the validated update for either CDS or
+  // EDS. If the response can't be parsed at the top level, \a type_url will
+  // point to an empty string; otherwise, it will point to the received data.
+  grpc_error* ParseAdsResponse(
+      const grpc_slice& encoded_response,
+      const std::string& expected_server_name,
+      const std::string& expected_route_config_name,
+      const std::set<StringView>& expected_cluster_names,
+      const std::set<StringView>& expected_eds_service_names,
+      absl::optional<LdsUpdate>* lds_update,
+      absl::optional<RdsUpdate>* rds_update, CdsUpdateMap* cds_update_map,
+      EdsUpdateMap* eds_update_map, std::string* version, std::string* nonce,
+      std::string* type_url);
+
+  // Creates an LRS request querying \a server_name.
+  grpc_slice CreateLrsInitialRequest(const std::string& server_name);
+
+  // Creates an LRS request sending a client-side load report.
+  grpc_slice CreateLrsRequest(ClusterLoadReportMap cluster_load_report_map);
+
+  // Parses the LRS response and returns \a
+  // load_reporting_interval for client-side load reporting. If there is any
+  // error, the output config is invalid.
+  grpc_error* ParseLrsResponse(const grpc_slice& encoded_response,
+                               std::set<std::string>* cluster_names,
+                               grpc_millis* load_reporting_interval);
+
+ private:
+  XdsClient* client_;
+  TraceFlag* tracer_;
+  const XdsBootstrap::Node* node_;
+  const std::string build_version_;
+  const std::string user_agent_name_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_API_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.cc
new file mode 100644
index 0000000..6a64171
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.cc	
@@ -0,0 +1,347 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+namespace {
+
+UniquePtr<char> BootstrapString(const XdsBootstrap& bootstrap) {
+  gpr_strvec v;
+  gpr_strvec_init(&v);
+  char* tmp;
+  if (bootstrap.node() != nullptr) {
+    gpr_asprintf(&tmp,
+                 "node={\n"
+                 "  id=\"%s\",\n"
+                 "  cluster=\"%s\",\n"
+                 "  locality={\n"
+                 "    region=\"%s\",\n"
+                 "    zone=\"%s\",\n"
+                 "    subzone=\"%s\"\n"
+                 "  },\n"
+                 "  metadata=%s,\n"
+                 "},\n",
+                 bootstrap.node()->id.c_str(),
+                 bootstrap.node()->cluster.c_str(),
+                 bootstrap.node()->locality_region.c_str(),
+                 bootstrap.node()->locality_zone.c_str(),
+                 bootstrap.node()->locality_subzone.c_str(),
+                 bootstrap.node()->metadata.Dump().c_str());
+    gpr_strvec_add(&v, tmp);
+  }
+  gpr_asprintf(&tmp,
+               "servers=[\n"
+               "  {\n"
+               "    uri=\"%s\",\n"
+               "    creds=[\n",
+               bootstrap.server().server_uri.c_str());
+  gpr_strvec_add(&v, tmp);
+  for (size_t i = 0; i < bootstrap.server().channel_creds.size(); ++i) {
+    const auto& creds = bootstrap.server().channel_creds[i];
+    gpr_asprintf(&tmp, "      {type=\"%s\", config=%s},\n", creds.type.c_str(),
+                 creds.config.Dump().c_str());
+    gpr_strvec_add(&v, tmp);
+  }
+  gpr_strvec_add(&v, gpr_strdup("    ]\n  }\n]"));
+  UniquePtr<char> result(gpr_strvec_flatten(&v, nullptr));
+  gpr_strvec_destroy(&v);
+  return result;
+}
+
+}  // namespace
+
+std::unique_ptr<XdsBootstrap> XdsBootstrap::ReadFromFile(XdsClient* client,
+                                                         TraceFlag* tracer,
+                                                         grpc_error** error) {
+  grpc_core::UniquePtr<char> path(gpr_getenv("GRPC_XDS_BOOTSTRAP"));
+  if (path == nullptr) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Environment variable GRPC_XDS_BOOTSTRAP not defined");
+    return nullptr;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Got bootstrap file location from "
+            "GRPC_XDS_BOOTSTRAP environment variable: %s",
+            client, path.get());
+  }
+  grpc_slice contents;
+  *error = grpc_load_file(path.get(), /*add_null_terminator=*/true, &contents);
+  if (*error != GRPC_ERROR_NONE) return nullptr;
+  StringView contents_str_view = StringViewFromSlice(contents);
+  if (GRPC_TRACE_FLAG_ENABLED(*tracer)) {
+    UniquePtr<char> str = StringViewToCString(contents_str_view);
+    gpr_log(GPR_DEBUG, "[xds_client %p] Bootstrap file contents: %s", client,
+            str.get());
+  }
+  Json json = Json::Parse(contents_str_view, error);
+  grpc_slice_unref_internal(contents);
+  if (*error != GRPC_ERROR_NONE) {
+    char* msg;
+    gpr_asprintf(&msg, "Failed to parse bootstrap file %s", path.get());
+    grpc_error* error_out =
+        GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(msg, error, 1);
+    gpr_free(msg);
+    GRPC_ERROR_UNREF(*error);
+    *error = error_out;
+    return nullptr;
+  }
+  std::unique_ptr<XdsBootstrap> result =
+      absl::make_unique<XdsBootstrap>(std::move(json), error);
+  if (*error == GRPC_ERROR_NONE && GRPC_TRACE_FLAG_ENABLED(*tracer)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Bootstrap config for creating xds client:\n%s",
+            client, BootstrapString(*result).get());
+  }
+  return result;
+}
+
+XdsBootstrap::XdsBootstrap(Json json, grpc_error** error) {
+  if (json.type() != Json::Type::OBJECT) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "malformed JSON in bootstrap file");
+    return;
+  }
+  InlinedVector<grpc_error*, 1> error_list;
+  auto it = json.mutable_object()->find("xds_servers");
+  if (it == json.mutable_object()->end()) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "\"xds_servers\" field not present"));
+  } else if (it->second.type() != Json::Type::ARRAY) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "\"xds_servers\" field is not an array"));
+  } else {
+    grpc_error* parse_error = ParseXdsServerList(&it->second);
+    if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+  }
+  it = json.mutable_object()->find("node");
+  if (it != json.mutable_object()->end()) {
+    if (it->second.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"node\" field is not an object"));
+    } else {
+      grpc_error* parse_error = ParseNode(&it->second);
+      if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+    }
+  }
+  *error = GRPC_ERROR_CREATE_FROM_VECTOR("errors parsing xds bootstrap file",
+                                         &error_list);
+}
+
+grpc_error* XdsBootstrap::ParseXdsServerList(Json* json) {
+  InlinedVector<grpc_error*, 1> error_list;
+  for (size_t i = 0; i < json->mutable_array()->size(); ++i) {
+    Json& child = json->mutable_array()->at(i);
+    if (child.type() != Json::Type::OBJECT) {
+      char* msg;
+      gpr_asprintf(&msg, "array element %" PRIuPTR " is not an object", i);
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+      gpr_free(msg);
+    } else {
+      grpc_error* parse_error = ParseXdsServer(&child, i);
+      if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("errors parsing \"xds_servers\" array",
+                                       &error_list);
+}
+
+grpc_error* XdsBootstrap::ParseXdsServer(Json* json, size_t idx) {
+  InlinedVector<grpc_error*, 1> error_list;
+  servers_.emplace_back();
+  XdsServer& server = servers_[servers_.size() - 1];
+  auto it = json->mutable_object()->find("server_uri");
+  if (it == json->mutable_object()->end()) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "\"server_uri\" field not present"));
+  } else if (it->second.type() != Json::Type::STRING) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "\"server_uri\" field is not a string"));
+  } else {
+    server.server_uri = std::move(*it->second.mutable_string_value());
+  }
+  it = json->mutable_object()->find("channel_creds");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::ARRAY) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"channel_creds\" field is not an array"));
+    } else {
+      grpc_error* parse_error = ParseChannelCredsArray(&it->second, &server);
+      if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+    }
+  }
+  // Can't use GRPC_ERROR_CREATE_FROM_VECTOR() here, because the error
+  // string is not static in this case.
+  if (error_list.empty()) return GRPC_ERROR_NONE;
+  char* msg;
+  gpr_asprintf(&msg, "errors parsing index %" PRIuPTR, idx);
+  grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  gpr_free(msg);
+  for (size_t i = 0; i < error_list.size(); ++i) {
+    error = grpc_error_add_child(error, error_list[i]);
+  }
+  return error;
+}
+
+grpc_error* XdsBootstrap::ParseChannelCredsArray(Json* json,
+                                                 XdsServer* server) {
+  InlinedVector<grpc_error*, 1> error_list;
+  for (size_t i = 0; i < json->mutable_array()->size(); ++i) {
+    Json& child = json->mutable_array()->at(i);
+    if (child.type() != Json::Type::OBJECT) {
+      char* msg;
+      gpr_asprintf(&msg, "array element %" PRIuPTR " is not an object", i);
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+      gpr_free(msg);
+    } else {
+      grpc_error* parse_error = ParseChannelCreds(&child, i, server);
+      if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("errors parsing \"channel_creds\" array",
+                                       &error_list);
+}
+
+grpc_error* XdsBootstrap::ParseChannelCreds(Json* json, size_t idx,
+                                            XdsServer* server) {
+  InlinedVector<grpc_error*, 1> error_list;
+  ChannelCreds channel_creds;
+  auto it = json->mutable_object()->find("type");
+  if (it == json->mutable_object()->end()) {
+    error_list.push_back(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("\"type\" field not present"));
+  } else if (it->second.type() != Json::Type::STRING) {
+    error_list.push_back(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("\"type\" field is not a string"));
+  } else {
+    channel_creds.type = std::move(*it->second.mutable_string_value());
+  }
+  it = json->mutable_object()->find("config");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"config\" field is not an object"));
+    } else {
+      channel_creds.config = std::move(it->second);
+    }
+  }
+  if (!channel_creds.type.empty()) {
+    server->channel_creds.emplace_back(std::move(channel_creds));
+  }
+  // Can't use GRPC_ERROR_CREATE_FROM_VECTOR() here, because the error
+  // string is not static in this case.
+  if (error_list.empty()) return GRPC_ERROR_NONE;
+  char* msg;
+  gpr_asprintf(&msg, "errors parsing index %" PRIuPTR, idx);
+  grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  gpr_free(msg);
+  for (size_t i = 0; i < error_list.size(); ++i) {
+    error = grpc_error_add_child(error, error_list[i]);
+  }
+  return error;
+}
+
+grpc_error* XdsBootstrap::ParseNode(Json* json) {
+  InlinedVector<grpc_error*, 1> error_list;
+  node_ = absl::make_unique<Node>();
+  auto it = json->mutable_object()->find("id");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("\"id\" field is not a string"));
+    } else {
+      node_->id = std::move(*it->second.mutable_string_value());
+    }
+  }
+  it = json->mutable_object()->find("cluster");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"cluster\" field is not a string"));
+    } else {
+      node_->cluster = std::move(*it->second.mutable_string_value());
+    }
+  }
+  it = json->mutable_object()->find("locality");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"locality\" field is not an object"));
+    } else {
+      grpc_error* parse_error = ParseLocality(&it->second);
+      if (parse_error != GRPC_ERROR_NONE) error_list.push_back(parse_error);
+    }
+  }
+  it = json->mutable_object()->find("metadata");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::OBJECT) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"metadata\" field is not an object"));
+    } else {
+      node_->metadata = std::move(it->second);
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("errors parsing \"node\" object",
+                                       &error_list);
+}
+
+grpc_error* XdsBootstrap::ParseLocality(Json* json) {
+  InlinedVector<grpc_error*, 1> error_list;
+  auto it = json->mutable_object()->find("region");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"region\" field is not a string"));
+    } else {
+      node_->locality_region = std::move(*it->second.mutable_string_value());
+    }
+  }
+  it = json->mutable_object()->find("zone");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"zone\" field is not a string"));
+    } else {
+      node_->locality_zone = std::move(*it->second.mutable_string_value());
+    }
+  }
+  it = json->mutable_object()->find("subzone");
+  if (it != json->mutable_object()->end()) {
+    if (it->second.type() != Json::Type::STRING) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "\"subzone\" field is not a string"));
+    } else {
+      node_->locality_subzone = std::move(*it->second.mutable_string_value());
+    }
+  }
+  return GRPC_ERROR_CREATE_FROM_VECTOR("errors parsing \"locality\" object",
+                                       &error_list);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.h
new file mode 100644
index 0000000..d3b04ad
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_bootstrap.h	
@@ -0,0 +1,87 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <grpc/impl/codegen/slice.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+namespace grpc_core {
+
+class XdsClient;
+
+class XdsBootstrap {
+ public:
+  struct Node {
+    std::string id;
+    std::string cluster;
+    std::string locality_region;
+    std::string locality_zone;
+    std::string locality_subzone;
+    Json metadata;
+  };
+
+  struct ChannelCreds {
+    std::string type;
+    Json config;
+  };
+
+  struct XdsServer {
+    std::string server_uri;
+    InlinedVector<ChannelCreds, 1> channel_creds;
+  };
+
+  // If *error is not GRPC_ERROR_NONE after returning, then there was an
+  // error reading the file.
+  static std::unique_ptr<XdsBootstrap> ReadFromFile(XdsClient* client,
+                                                    TraceFlag* tracer,
+                                                    grpc_error** error);
+
+  // Do not instantiate directly -- use ReadFromFile() above instead.
+  XdsBootstrap(Json json, grpc_error** error);
+
+  // TODO(roth): We currently support only one server. Fix this when we
+  // add support for fallback for the xds channel.
+  const XdsServer& server() const { return servers_[0]; }
+  const Node* node() const { return node_.get(); }
+
+ private:
+  grpc_error* ParseXdsServerList(Json* json);
+  grpc_error* ParseXdsServer(Json* json, size_t idx);
+  grpc_error* ParseChannelCredsArray(Json* json, XdsServer* server);
+  grpc_error* ParseChannelCreds(Json* json, size_t idx, XdsServer* server);
+  grpc_error* ParseNode(Json* json);
+  grpc_error* ParseLocality(Json* json);
+
+  InlinedVector<XdsServer, 1> servers_;
+  std::unique_ptr<Node> node_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_BOOTSTRAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel.h
new file mode 100644
index 0000000..f78c0ba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/lib/iomgr/error.h"
+
+namespace grpc_core {
+
+/// Makes any necessary modifications to \a args for use in the xds
+/// balancer channel.
+///
+/// Takes ownership of \a args.
+///
+/// Caller takes ownership of the returned args.
+grpc_channel_args* ModifyXdsChannelArgs(grpc_channel_args* args);
+
+grpc_channel* CreateXdsChannel(const XdsBootstrap& bootstrap,
+                               const grpc_channel_args& args,
+                               grpc_error** error);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_args.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_args.h
new file mode 100644
index 0000000..cabdc51
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_args.h	
@@ -0,0 +1,26 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H
+
+// Boolean channel arg indicating whether the target is an xds server.
+#define GRPC_ARG_ADDRESS_IS_XDS_SERVER "grpc.address_is_xds_server"
+
+// Pointer channel arg containing a ref to the XdsClient object.
+#define GRPC_ARG_XDS_CLIENT "grpc.xds_client"
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CHANNEL_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_secure.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_secure.cc
new file mode 100644
index 0000000..52d226c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_channel_secure.cc	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_channel.h"
+
+#include <string.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/fake/fake_credentials.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+grpc_channel_args* ModifyXdsChannelArgs(grpc_channel_args* args) {
+  InlinedVector<const char*, 1> args_to_remove;
+  InlinedVector<grpc_arg, 2> args_to_add;
+  // Substitute the channel credentials with a version without call
+  // credentials: the load balancer is not necessarily trusted to handle
+  // bearer token credentials.
+  grpc_channel_credentials* channel_credentials =
+      grpc_channel_credentials_find_in_args(args);
+  RefCountedPtr<grpc_channel_credentials> creds_sans_call_creds;
+  if (channel_credentials != nullptr) {
+    creds_sans_call_creds =
+        channel_credentials->duplicate_without_call_credentials();
+    GPR_ASSERT(creds_sans_call_creds != nullptr);
+    args_to_remove.emplace_back(GRPC_ARG_CHANNEL_CREDENTIALS);
+    args_to_add.emplace_back(
+        grpc_channel_credentials_to_arg(creds_sans_call_creds.get()));
+  }
+  grpc_channel_args* result = grpc_channel_args_copy_and_add_and_remove(
+      args, args_to_remove.data(), args_to_remove.size(), args_to_add.data(),
+      args_to_add.size());
+  // Clean up.
+  grpc_channel_args_destroy(args);
+  return result;
+}
+
+grpc_channel* CreateXdsChannel(const XdsBootstrap& bootstrap,
+                               const grpc_channel_args& args,
+                               grpc_error** error) {
+  grpc_channel_credentials* creds = nullptr;
+  RefCountedPtr<grpc_channel_credentials> creds_to_unref;
+  if (!bootstrap.server().channel_creds.empty()) {
+    for (size_t i = 0; i < bootstrap.server().channel_creds.size(); ++i) {
+      if (bootstrap.server().channel_creds[i].type == "google_default") {
+        creds = grpc_google_default_credentials_create();
+        break;
+      } else if (bootstrap.server().channel_creds[i].type == "fake") {
+        creds = grpc_fake_transport_security_credentials_create();
+        break;
+      }
+    }
+    if (creds == nullptr) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "no supported credential types found");
+      return nullptr;
+    }
+    creds_to_unref.reset(creds);
+  } else {
+    creds = grpc_channel_credentials_find_in_args(&args);
+    if (creds == nullptr) {
+      // Built with security but parent channel is insecure.
+      return grpc_insecure_channel_create(bootstrap.server().server_uri.c_str(),
+                                          &args, nullptr);
+    }
+  }
+  const char* arg_to_remove = GRPC_ARG_CHANNEL_CREDENTIALS;
+  grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_remove(&args, &arg_to_remove, 1);
+  grpc_channel* channel = grpc_secure_channel_create(
+      creds, bootstrap.server().server_uri.c_str(), new_args, nullptr);
+  grpc_channel_args_destroy(new_args);
+  return channel;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.cc
new file mode 100644
index 0000000..37b300a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.cc	
@@ -0,0 +1,2174 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include "absl/strings/str_join.h"
+
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/xds/xds_api.h"
+#include "src/core/ext/filters/client_channel/xds/xds_channel.h"
+#include "src/core/ext/filters/client_channel/xds/xds_channel_args.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+#include "src/core/lib/backoff/backoff.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define GRPC_XDS_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_XDS_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_XDS_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_XDS_RECONNECT_JITTER 0.2
+#define GRPC_XDS_MIN_CLIENT_LOAD_REPORTING_INTERVAL_MS 1000
+
+namespace grpc_core {
+
+TraceFlag grpc_xds_client_trace(false, "xds_client");
+
+//
+// Internal class declarations
+//
+
+// An xds call wrapper that can restart a call upon failure. Holds a ref to
+// the xds channel. The template parameter is the kind of wrapped xds call.
+template <typename T>
+class XdsClient::ChannelState::RetryableCall
+    : public InternallyRefCounted<RetryableCall<T>> {
+ public:
+  explicit RetryableCall(RefCountedPtr<ChannelState> chand);
+
+  void Orphan() override;
+
+  void OnCallFinishedLocked();
+
+  T* calld() const { return calld_.get(); }
+  ChannelState* chand() const { return chand_.get(); }
+
+  bool IsCurrentCallOnChannel() const;
+
+ private:
+  void StartNewCallLocked();
+  void StartRetryTimerLocked();
+  static void OnRetryTimer(void* arg, grpc_error* error);
+  static void OnRetryTimerLocked(void* arg, grpc_error* error);
+
+  // The wrapped xds call that talks to the xds server. It's instantiated
+  // every time we start a new call. It's null during call retry backoff.
+  OrphanablePtr<T> calld_;
+  // The owning xds channel.
+  RefCountedPtr<ChannelState> chand_;
+
+  // Retry state.
+  BackOff backoff_;
+  grpc_timer retry_timer_;
+  grpc_closure on_retry_timer_;
+  bool retry_timer_callback_pending_ = false;
+
+  bool shutting_down_ = false;
+};
+
+// Contains an ADS call to the xds server.
+class XdsClient::ChannelState::AdsCallState
+    : public InternallyRefCounted<AdsCallState> {
+ public:
+  // The ctor and dtor should not be used directly.
+  explicit AdsCallState(RefCountedPtr<RetryableCall<AdsCallState>> parent);
+  ~AdsCallState() override;
+
+  void Orphan() override;
+
+  RetryableCall<AdsCallState>* parent() const { return parent_.get(); }
+  ChannelState* chand() const { return parent_->chand(); }
+  XdsClient* xds_client() const { return chand()->xds_client(); }
+  bool seen_response() const { return seen_response_; }
+
+  void Subscribe(const std::string& type_url, const std::string& name);
+  void Unsubscribe(const std::string& type_url, const std::string& name,
+                   bool delay_unsubscription);
+
+  bool HasSubscribedResources() const;
+
+ private:
+  class ResourceState : public InternallyRefCounted<ResourceState> {
+   public:
+    ResourceState(const std::string& type_url, const std::string& name)
+        : type_url_(type_url), name_(name) {
+      GRPC_CLOSURE_INIT(&timer_callback_, OnTimer, this,
+                        grpc_schedule_on_exec_ctx);
+    }
+
+    void Orphan() override {
+      Finish();
+      Unref();
+    }
+
+    void Start(RefCountedPtr<AdsCallState> ads_calld) {
+      if (sent_) return;
+      sent_ = true;
+      ads_calld_ = std::move(ads_calld);
+      Ref().release();
+      timer_pending_ = true;
+      grpc_timer_init(
+          &timer_,
+          ExecCtx::Get()->Now() + ads_calld_->xds_client()->request_timeout_,
+          &timer_callback_);
+    }
+
+    void Finish() {
+      if (timer_pending_) {
+        grpc_timer_cancel(&timer_);
+        timer_pending_ = false;
+      }
+    }
+
+   private:
+    static void OnTimer(void* arg, grpc_error* error) {
+      ResourceState* self = static_cast<ResourceState*>(arg);
+      self->ads_calld_->xds_client()->combiner_->Run(
+          GRPC_CLOSURE_INIT(&self->timer_callback_, OnTimerLocked, self,
+                            nullptr),
+          GRPC_ERROR_REF(error));
+    }
+
+    static void OnTimerLocked(void* arg, grpc_error* error) {
+      ResourceState* self = static_cast<ResourceState*>(arg);
+      if (error == GRPC_ERROR_NONE && self->timer_pending_) {
+        self->timer_pending_ = false;
+        char* msg;
+        gpr_asprintf(
+            &msg,
+            "timeout obtaining resource {type=%s name=%s} from xds server",
+            self->type_url_.c_str(), self->name_.c_str());
+        grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+        gpr_free(msg);
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+          gpr_log(GPR_INFO, "[xds_client %p] %s",
+                  self->ads_calld_->xds_client(), grpc_error_string(error));
+        }
+        if (self->type_url_ == XdsApi::kLdsTypeUrl ||
+            self->type_url_ == XdsApi::kRdsTypeUrl) {
+          self->ads_calld_->xds_client()->service_config_watcher_->OnError(
+              error);
+        } else if (self->type_url_ == XdsApi::kCdsTypeUrl) {
+          ClusterState& state =
+              self->ads_calld_->xds_client()->cluster_map_[self->name_];
+          for (const auto& p : state.watchers) {
+            p.first->OnError(GRPC_ERROR_REF(error));
+          }
+          GRPC_ERROR_UNREF(error);
+        } else if (self->type_url_ == XdsApi::kEdsTypeUrl) {
+          EndpointState& state =
+              self->ads_calld_->xds_client()->endpoint_map_[self->name_];
+          for (const auto& p : state.watchers) {
+            p.first->OnError(GRPC_ERROR_REF(error));
+          }
+          GRPC_ERROR_UNREF(error);
+        } else {
+          GPR_UNREACHABLE_CODE(return );
+        }
+      }
+      self->ads_calld_.reset();
+      self->Unref();
+    }
+
+    const std::string type_url_;
+    const std::string name_;
+
+    RefCountedPtr<AdsCallState> ads_calld_;
+    bool sent_ = false;
+    bool timer_pending_ = false;
+    grpc_timer timer_;
+    grpc_closure timer_callback_;
+  };
+
+  struct ResourceTypeState {
+    ~ResourceTypeState() { GRPC_ERROR_UNREF(error); }
+
+    // Version, nonce, and error for this resource type.
+    std::string version;
+    std::string nonce;
+    grpc_error* error = GRPC_ERROR_NONE;
+
+    // Subscribed resources of this type.
+    std::map<std::string /* name */, OrphanablePtr<ResourceState>>
+        subscribed_resources;
+  };
+
+  void SendMessageLocked(const std::string& type_url);
+
+  void AcceptLdsUpdate(absl::optional<XdsApi::LdsUpdate> lds_update);
+  void AcceptRdsUpdate(absl::optional<XdsApi::RdsUpdate> rds_update);
+  void AcceptCdsUpdate(XdsApi::CdsUpdateMap cds_update_map);
+  void AcceptEdsUpdate(XdsApi::EdsUpdateMap eds_update_map);
+
+  static void OnRequestSent(void* arg, grpc_error* error);
+  static void OnRequestSentLocked(void* arg, grpc_error* error);
+  static void OnResponseReceived(void* arg, grpc_error* error);
+  static void OnResponseReceivedLocked(void* arg, grpc_error* error);
+  static void OnStatusReceived(void* arg, grpc_error* error);
+  static void OnStatusReceivedLocked(void* arg, grpc_error* error);
+
+  bool IsCurrentCallOnChannel() const;
+
+  std::set<StringView> ClusterNamesForRequest();
+  std::set<StringView> EdsServiceNamesForRequest();
+
+  // The owning RetryableCall<>.
+  RefCountedPtr<RetryableCall<AdsCallState>> parent_;
+
+  bool sent_initial_message_ = false;
+  bool seen_response_ = false;
+
+  // Always non-NULL.
+  grpc_call* call_;
+
+  // recv_initial_metadata
+  grpc_metadata_array initial_metadata_recv_;
+
+  // send_message
+  grpc_byte_buffer* send_message_payload_ = nullptr;
+  grpc_closure on_request_sent_;
+
+  // recv_message
+  grpc_byte_buffer* recv_message_payload_ = nullptr;
+  grpc_closure on_response_received_;
+
+  // recv_trailing_metadata
+  grpc_metadata_array trailing_metadata_recv_;
+  grpc_status_code status_code_;
+  grpc_slice status_details_;
+  grpc_closure on_status_received_;
+
+  // Resource types for which requests need to be sent.
+  std::set<std::string /*type_url*/> buffered_requests_;
+
+  // State for each resource type.
+  std::map<std::string /*type_url*/, ResourceTypeState> state_map_;
+};
+
+// Contains an LRS call to the xds server.
+class XdsClient::ChannelState::LrsCallState
+    : public InternallyRefCounted<LrsCallState> {
+ public:
+  // The ctor and dtor should not be used directly.
+  explicit LrsCallState(RefCountedPtr<RetryableCall<LrsCallState>> parent);
+  ~LrsCallState() override;
+
+  void Orphan() override;
+
+  void MaybeStartReportingLocked();
+
+  RetryableCall<LrsCallState>* parent() { return parent_.get(); }
+  ChannelState* chand() const { return parent_->chand(); }
+  XdsClient* xds_client() const { return chand()->xds_client(); }
+  bool seen_response() const { return seen_response_; }
+
+ private:
+  // Reports client-side load stats according to a fixed interval.
+  class Reporter : public InternallyRefCounted<Reporter> {
+   public:
+    Reporter(RefCountedPtr<LrsCallState> parent, grpc_millis report_interval)
+        : parent_(std::move(parent)), report_interval_(report_interval) {
+      ScheduleNextReportLocked();
+    }
+
+    void Orphan() override;
+
+   private:
+    void ScheduleNextReportLocked();
+    static void OnNextReportTimer(void* arg, grpc_error* error);
+    static void OnNextReportTimerLocked(void* arg, grpc_error* error);
+    void SendReportLocked();
+    static void OnReportDone(void* arg, grpc_error* error);
+    static void OnReportDoneLocked(void* arg, grpc_error* error);
+
+    bool IsCurrentReporterOnCall() const {
+      return this == parent_->reporter_.get();
+    }
+    XdsClient* xds_client() const { return parent_->xds_client(); }
+
+    // The owning LRS call.
+    RefCountedPtr<LrsCallState> parent_;
+
+    // The load reporting state.
+    const grpc_millis report_interval_;
+    bool last_report_counters_were_zero_ = false;
+    bool next_report_timer_callback_pending_ = false;
+    grpc_timer next_report_timer_;
+    grpc_closure on_next_report_timer_;
+    grpc_closure on_report_done_;
+  };
+
+  static void OnInitialRequestSent(void* arg, grpc_error* error);
+  static void OnResponseReceived(void* arg, grpc_error* error);
+  static void OnStatusReceived(void* arg, grpc_error* error);
+  static void OnInitialRequestSentLocked(void* arg, grpc_error* error);
+  static void OnResponseReceivedLocked(void* arg, grpc_error* error);
+  static void OnStatusReceivedLocked(void* arg, grpc_error* error);
+
+  bool IsCurrentCallOnChannel() const;
+
+  // The owning RetryableCall<>.
+  RefCountedPtr<RetryableCall<LrsCallState>> parent_;
+  bool seen_response_ = false;
+
+  // Always non-NULL.
+  grpc_call* call_;
+
+  // recv_initial_metadata
+  grpc_metadata_array initial_metadata_recv_;
+
+  // send_message
+  grpc_byte_buffer* send_message_payload_ = nullptr;
+  grpc_closure on_initial_request_sent_;
+
+  // recv_message
+  grpc_byte_buffer* recv_message_payload_ = nullptr;
+  grpc_closure on_response_received_;
+
+  // recv_trailing_metadata
+  grpc_metadata_array trailing_metadata_recv_;
+  grpc_status_code status_code_;
+  grpc_slice status_details_;
+  grpc_closure on_status_received_;
+
+  // Load reporting state.
+  std::set<std::string> cluster_names_;  // Asked for by the LRS server.
+  grpc_millis load_reporting_interval_ = 0;
+  OrphanablePtr<Reporter> reporter_;
+};
+
+//
+// XdsClient::ChannelState::StateWatcher
+//
+
+class XdsClient::ChannelState::StateWatcher
+    : public AsyncConnectivityStateWatcherInterface {
+ public:
+  explicit StateWatcher(RefCountedPtr<ChannelState> parent)
+      : AsyncConnectivityStateWatcherInterface(parent->xds_client()->combiner_),
+        parent_(std::move(parent)) {}
+
+ private:
+  void OnConnectivityStateChange(grpc_connectivity_state new_state) override {
+    if (!parent_->shutting_down_ &&
+        new_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+      // In TRANSIENT_FAILURE.  Notify all watchers of error.
+      gpr_log(GPR_INFO,
+              "[xds_client %p] xds channel in state TRANSIENT_FAILURE",
+              parent_->xds_client());
+      parent_->xds_client()->NotifyOnError(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "xds channel in TRANSIENT_FAILURE"));
+    }
+  }
+
+  RefCountedPtr<ChannelState> parent_;
+};
+
+//
+// XdsClient::ChannelState
+//
+
+namespace {
+
+// Returns the channel args for the xds channel.
+grpc_channel_args* BuildXdsChannelArgs(const grpc_channel_args& args) {
+  static const char* args_to_remove[] = {
+      // LB policy name, since we want to use the default (pick_first) in
+      // the LB channel.
+      GRPC_ARG_LB_POLICY_NAME,
+      // The service config that contains the LB config. We don't want to
+      // recursively use xds in the LB channel.
+      GRPC_ARG_SERVICE_CONFIG,
+      // The channel arg for the server URI, since that will be different for
+      // the xds channel than for the parent channel.  The client channel
+      // factory will re-add this arg with the right value.
+      GRPC_ARG_SERVER_URI,
+      // The xds channel should use the authority indicated by the target
+      // authority table (see \a ModifyXdsChannelArgs),
+      // as opposed to the authority from the parent channel.
+      GRPC_ARG_DEFAULT_AUTHORITY,
+      // Just as for \a GRPC_ARG_DEFAULT_AUTHORITY, the xds channel should be
+      // treated as a stand-alone channel and not inherit this argument from the
+      // args of the parent channel.
+      GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,
+      // Don't want to pass down channelz node from parent; the balancer
+      // channel will get its own.
+      GRPC_ARG_CHANNELZ_CHANNEL_NODE,
+      // Keepalive interval.  We are explicitly setting our own value below.
+      GRPC_ARG_KEEPALIVE_TIME_MS,
+  };
+  // Channel args to add.
+  InlinedVector<grpc_arg, 3> args_to_add;
+  // Keepalive interval.
+  args_to_add.emplace_back(grpc_channel_arg_integer_create(
+      const_cast<char*>(GRPC_ARG_KEEPALIVE_TIME_MS), 5000));
+  // A channel arg indicating that the target is an xds server.
+  // TODO(roth): Once we figure out our fallback and credentials story, decide
+  // whether this is actually needed.  Note that it's currently used by the
+  // fake security connector as well.
+  args_to_add.emplace_back(grpc_channel_arg_integer_create(
+      const_cast<char*>(GRPC_ARG_ADDRESS_IS_XDS_SERVER), 1));
+  // The parent channel's channelz uuid.
+  channelz::ChannelNode* channelz_node = nullptr;
+  const grpc_arg* arg =
+      grpc_channel_args_find(&args, GRPC_ARG_CHANNELZ_CHANNEL_NODE);
+  if (arg != nullptr && arg->type == GRPC_ARG_POINTER &&
+      arg->value.pointer.p != nullptr) {
+    channelz_node = static_cast<channelz::ChannelNode*>(arg->value.pointer.p);
+    args_to_add.emplace_back(
+        channelz::MakeParentUuidArg(channelz_node->uuid()));
+  }
+  // Construct channel args.
+  grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+      &args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), args_to_add.data(),
+      args_to_add.size());
+  // Make any necessary modifications for security.
+  return ModifyXdsChannelArgs(new_args);
+}
+
+}  // namespace
+
+XdsClient::ChannelState::ChannelState(RefCountedPtr<XdsClient> xds_client,
+                                      grpc_channel* channel)
+    : InternallyRefCounted<ChannelState>(&grpc_xds_client_trace),
+      xds_client_(std::move(xds_client)),
+      channel_(channel) {
+  GPR_ASSERT(channel_ != nullptr);
+  StartConnectivityWatchLocked();
+}
+
+XdsClient::ChannelState::~ChannelState() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] Destroying xds channel %p", xds_client(),
+            this);
+  }
+  grpc_channel_destroy(channel_);
+}
+
+void XdsClient::ChannelState::Orphan() {
+  shutting_down_ = true;
+  CancelConnectivityWatchLocked();
+  ads_calld_.reset();
+  lrs_calld_.reset();
+  Unref(DEBUG_LOCATION, "ChannelState+orphaned");
+}
+
+XdsClient::ChannelState::AdsCallState* XdsClient::ChannelState::ads_calld()
+    const {
+  return ads_calld_->calld();
+}
+
+XdsClient::ChannelState::LrsCallState* XdsClient::ChannelState::lrs_calld()
+    const {
+  return lrs_calld_->calld();
+}
+
+bool XdsClient::ChannelState::HasActiveAdsCall() const {
+  return ads_calld_->calld() != nullptr;
+}
+
+void XdsClient::ChannelState::MaybeStartLrsCall() {
+  if (lrs_calld_ != nullptr) return;
+  lrs_calld_.reset(
+      new RetryableCall<LrsCallState>(Ref(DEBUG_LOCATION, "ChannelState+lrs")));
+}
+
+void XdsClient::ChannelState::StopLrsCall() { lrs_calld_.reset(); }
+
+void XdsClient::ChannelState::StartConnectivityWatchLocked() {
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel_));
+  GPR_ASSERT(client_channel_elem->filter == &grpc_client_channel_filter);
+  watcher_ = new StateWatcher(Ref());
+  grpc_client_channel_start_connectivity_watch(
+      client_channel_elem, GRPC_CHANNEL_IDLE,
+      OrphanablePtr<AsyncConnectivityStateWatcherInterface>(watcher_));
+}
+
+void XdsClient::ChannelState::CancelConnectivityWatchLocked() {
+  grpc_channel_element* client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel_));
+  GPR_ASSERT(client_channel_elem->filter == &grpc_client_channel_filter);
+  grpc_client_channel_stop_connectivity_watch(client_channel_elem, watcher_);
+}
+
+void XdsClient::ChannelState::Subscribe(const std::string& type_url,
+                                        const std::string& name) {
+  if (ads_calld_ == nullptr) {
+    // Start the ADS call if this is the first request.
+    ads_calld_.reset(new RetryableCall<AdsCallState>(
+        Ref(DEBUG_LOCATION, "ChannelState+ads")));
+    // Note: AdsCallState's ctor will automatically subscribe to all
+    // resources that the XdsClient already has watchers for, so we can
+    // return here.
+    return;
+  }
+  // If the ADS call is in backoff state, we don't need to do anything now
+  // because when the call is restarted it will resend all necessary requests.
+  if (ads_calld() == nullptr) return;
+  // Subscribe to this resource if the ADS call is active.
+  ads_calld()->Subscribe(type_url, name);
+}
+
+void XdsClient::ChannelState::Unsubscribe(const std::string& type_url,
+                                          const std::string& name,
+                                          bool delay_unsubscription) {
+  if (ads_calld_ != nullptr) {
+    ads_calld_->calld()->Unsubscribe(type_url, name, delay_unsubscription);
+    if (!ads_calld_->calld()->HasSubscribedResources()) ads_calld_.reset();
+  }
+}
+
+//
+// XdsClient::ChannelState::RetryableCall<>
+//
+
+template <typename T>
+XdsClient::ChannelState::RetryableCall<T>::RetryableCall(
+    RefCountedPtr<ChannelState> chand)
+    : chand_(std::move(chand)),
+      backoff_(
+          BackOff::Options()
+              .set_initial_backoff(GRPC_XDS_INITIAL_CONNECT_BACKOFF_SECONDS *
+                                   1000)
+              .set_multiplier(GRPC_XDS_RECONNECT_BACKOFF_MULTIPLIER)
+              .set_jitter(GRPC_XDS_RECONNECT_JITTER)
+              .set_max_backoff(GRPC_XDS_RECONNECT_MAX_BACKOFF_SECONDS * 1000)) {
+  StartNewCallLocked();
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::Orphan() {
+  shutting_down_ = true;
+  calld_.reset();
+  if (retry_timer_callback_pending_) grpc_timer_cancel(&retry_timer_);
+  this->Unref(DEBUG_LOCATION, "RetryableCall+orphaned");
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::OnCallFinishedLocked() {
+  const bool seen_response = calld_->seen_response();
+  calld_.reset();
+  if (seen_response) {
+    // If we lost connection to the xds server, reset backoff and restart the
+    // call immediately.
+    backoff_.Reset();
+    StartNewCallLocked();
+  } else {
+    // If we failed to connect to the xds server, retry later.
+    StartRetryTimerLocked();
+  }
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::StartNewCallLocked() {
+  if (shutting_down_) return;
+  GPR_ASSERT(chand_->channel_ != nullptr);
+  GPR_ASSERT(calld_ == nullptr);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Start new call from retryable call (chand: %p, "
+            "retryable call: %p)",
+            chand()->xds_client(), chand(), this);
+  }
+  calld_ = MakeOrphanable<T>(
+      this->Ref(DEBUG_LOCATION, "RetryableCall+start_new_call"));
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::StartRetryTimerLocked() {
+  if (shutting_down_) return;
+  const grpc_millis next_attempt_time = backoff_.NextAttemptTime();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    grpc_millis timeout = GPR_MAX(next_attempt_time - ExecCtx::Get()->Now(), 0);
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Failed to connect to xds server (chand: %p) "
+            "retry timer will fire in %" PRId64 "ms.",
+            chand()->xds_client(), chand(), timeout);
+  }
+  this->Ref(DEBUG_LOCATION, "RetryableCall+retry_timer_start").release();
+  GRPC_CLOSURE_INIT(&on_retry_timer_, OnRetryTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&retry_timer_, next_attempt_time, &on_retry_timer_);
+  retry_timer_callback_pending_ = true;
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::OnRetryTimer(
+    void* arg, grpc_error* error) {
+  RetryableCall* calld = static_cast<RetryableCall*>(arg);
+  calld->chand_->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&calld->on_retry_timer_, OnRetryTimerLocked, calld,
+                        nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+template <typename T>
+void XdsClient::ChannelState::RetryableCall<T>::OnRetryTimerLocked(
+    void* arg, grpc_error* error) {
+  RetryableCall* calld = static_cast<RetryableCall*>(arg);
+  calld->retry_timer_callback_pending_ = false;
+  if (!calld->shutting_down_ && error == GRPC_ERROR_NONE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(
+          GPR_INFO,
+          "[xds_client %p] Retry timer fires (chand: %p, retryable call: %p)",
+          calld->chand()->xds_client(), calld->chand(), calld);
+    }
+    calld->StartNewCallLocked();
+  }
+  calld->Unref(DEBUG_LOCATION, "RetryableCall+retry_timer_done");
+}
+
+//
+// XdsClient::ChannelState::AdsCallState
+//
+
+XdsClient::ChannelState::AdsCallState::AdsCallState(
+    RefCountedPtr<RetryableCall<AdsCallState>> parent)
+    : InternallyRefCounted<AdsCallState>(&grpc_xds_client_trace),
+      parent_(std::move(parent)) {
+  // Init the ADS call. Note that the call will progress every time there's
+  // activity in xds_client()->interested_parties_, which is comprised of
+  // the polling entities from client_channel.
+  GPR_ASSERT(xds_client() != nullptr);
+  GPR_ASSERT(!xds_client()->server_name_.empty());
+  // Create a call with the specified method name.
+  call_ = grpc_channel_create_pollset_set_call(
+      chand()->channel_, nullptr, GRPC_PROPAGATE_DEFAULTS,
+      xds_client()->interested_parties_,
+      GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_DISCOVERY_DOT_V2_DOT_AGGREGATEDDISCOVERYSERVICE_SLASH_STREAMAGGREGATEDRESOURCES,
+      nullptr, GRPC_MILLIS_INF_FUTURE, nullptr);
+  GPR_ASSERT(call_ != nullptr);
+  // Init data associated with the call.
+  grpc_metadata_array_init(&initial_metadata_recv_);
+  grpc_metadata_array_init(&trailing_metadata_recv_);
+  // Start the call.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Starting ADS call (chand: %p, calld: %p, "
+            "call: %p)",
+            xds_client(), chand(), this, call_);
+  }
+  // Create the ops.
+  grpc_call_error call_error;
+  grpc_op ops[3];
+  memset(ops, 0, sizeof(ops));
+  // Op: send initial metadata.
+  grpc_op* op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY |
+              GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET;
+  op->reserved = nullptr;
+  op++;
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 nullptr);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: send request message.
+  GRPC_CLOSURE_INIT(&on_request_sent_, OnRequestSent, this,
+                    grpc_schedule_on_exec_ctx);
+  if (xds_client()->service_config_watcher_ != nullptr) {
+    Subscribe(XdsApi::kLdsTypeUrl, xds_client()->server_name_);
+    if (xds_client()->lds_result_.has_value() &&
+        !xds_client()->lds_result_->route_config_name.empty()) {
+      Subscribe(XdsApi::kRdsTypeUrl,
+                xds_client()->lds_result_->route_config_name);
+    }
+  }
+  for (const auto& p : xds_client()->cluster_map_) {
+    Subscribe(XdsApi::kCdsTypeUrl, std::string(p.first));
+  }
+  for (const auto& p : xds_client()->endpoint_map_) {
+    Subscribe(XdsApi::kEdsTypeUrl, std::string(p.first));
+  }
+  // Op: recv initial metadata.
+  op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata =
+      &initial_metadata_recv_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // Op: recv response.
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &recv_message_payload_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  Ref(DEBUG_LOCATION, "ADS+OnResponseReceivedLocked").release();
+  GRPC_CLOSURE_INIT(&on_response_received_, OnResponseReceived, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 &on_response_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: recv server status.
+  op = ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv_;
+  op->data.recv_status_on_client.status = &status_code_;
+  op->data.recv_status_on_client.status_details = &status_details_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // This callback signals the end of the call, so it relies on the initial
+  // ref instead of a new ref. When it's invoked, it's the initial ref that is
+  // unreffed.
+  GRPC_CLOSURE_INIT(&on_status_received_, OnStatusReceived, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 &on_status_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+XdsClient::ChannelState::AdsCallState::~AdsCallState() {
+  grpc_metadata_array_destroy(&initial_metadata_recv_);
+  grpc_metadata_array_destroy(&trailing_metadata_recv_);
+  grpc_byte_buffer_destroy(send_message_payload_);
+  grpc_byte_buffer_destroy(recv_message_payload_);
+  grpc_slice_unref_internal(status_details_);
+  GPR_ASSERT(call_ != nullptr);
+  grpc_call_unref(call_);
+}
+
+void XdsClient::ChannelState::AdsCallState::Orphan() {
+  GPR_ASSERT(call_ != nullptr);
+  // If we are here because xds_client wants to cancel the call,
+  // on_status_received_ will complete the cancellation and clean up. Otherwise,
+  // we are here because xds_client has to orphan a failed call, then the
+  // following cancellation will be a no-op.
+  grpc_call_cancel(call_, nullptr);
+  state_map_.clear();
+  // Note that the initial ref is hold by on_status_received_. So the
+  // corresponding unref happens in on_status_received_ instead of here.
+}
+
+void XdsClient::ChannelState::AdsCallState::SendMessageLocked(
+    const std::string& type_url) {
+  // Buffer message sending if an existing message is in flight.
+  if (send_message_payload_ != nullptr) {
+    buffered_requests_.insert(type_url);
+    return;
+  }
+  auto& state = state_map_[type_url];
+  grpc_slice request_payload_slice;
+  std::set<StringView> resource_names;
+  if (type_url == XdsApi::kLdsTypeUrl) {
+    resource_names.insert(xds_client()->server_name_);
+    request_payload_slice = xds_client()->api_.CreateLdsRequest(
+        xds_client()->server_name_, state.version, state.nonce,
+        GRPC_ERROR_REF(state.error), !sent_initial_message_);
+    state.subscribed_resources[xds_client()->server_name_]->Start(Ref());
+  } else if (type_url == XdsApi::kRdsTypeUrl) {
+    resource_names.insert(xds_client()->lds_result_->route_config_name);
+    request_payload_slice = xds_client()->api_.CreateRdsRequest(
+        xds_client()->lds_result_->route_config_name, state.version,
+        state.nonce, GRPC_ERROR_REF(state.error), !sent_initial_message_);
+    state.subscribed_resources[xds_client()->lds_result_->route_config_name]
+        ->Start(Ref());
+  } else if (type_url == XdsApi::kCdsTypeUrl) {
+    resource_names = ClusterNamesForRequest();
+    request_payload_slice = xds_client()->api_.CreateCdsRequest(
+        resource_names, state.version, state.nonce, GRPC_ERROR_REF(state.error),
+        !sent_initial_message_);
+  } else if (type_url == XdsApi::kEdsTypeUrl) {
+    resource_names = EdsServiceNamesForRequest();
+    request_payload_slice = xds_client()->api_.CreateEdsRequest(
+        resource_names, state.version, state.nonce, GRPC_ERROR_REF(state.error),
+        !sent_initial_message_);
+  } else {
+    request_payload_slice = xds_client()->api_.CreateUnsupportedTypeNackRequest(
+        type_url, state.nonce, GRPC_ERROR_REF(state.error));
+    state_map_.erase(type_url);
+  }
+  sent_initial_message_ = true;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] sending ADS request: type=%s version=%s nonce=%s "
+            "error=%s resources=%s",
+            xds_client(), type_url.c_str(), state.version.c_str(),
+            state.nonce.c_str(), grpc_error_string(state.error),
+            absl::StrJoin(resource_names, " ").c_str());
+  }
+  GRPC_ERROR_UNREF(state.error);
+  state.error = GRPC_ERROR_NONE;
+  // Create message payload.
+  send_message_payload_ =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_slice_unref_internal(request_payload_slice);
+  // Send the message.
+  grpc_op op;
+  memset(&op, 0, sizeof(op));
+  op.op = GRPC_OP_SEND_MESSAGE;
+  op.data.send_message.send_message = send_message_payload_;
+  Ref(DEBUG_LOCATION, "ADS+OnRequestSentLocked").release();
+  GRPC_CLOSURE_INIT(&on_request_sent_, OnRequestSent, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_call_error call_error =
+      grpc_call_start_batch_and_execute(call_, &op, 1, &on_request_sent_);
+  if (GPR_UNLIKELY(call_error != GRPC_CALL_OK)) {
+    gpr_log(GPR_ERROR,
+            "[xds_client %p] calld=%p call_error=%d sending ADS message",
+            xds_client(), this, call_error);
+    GPR_ASSERT(GRPC_CALL_OK == call_error);
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::Subscribe(
+    const std::string& type_url, const std::string& name) {
+  auto& state = state_map_[type_url].subscribed_resources[name];
+  if (state == nullptr) {
+    state = MakeOrphanable<ResourceState>(type_url, name);
+    SendMessageLocked(type_url);
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::Unsubscribe(
+    const std::string& type_url, const std::string& name,
+    bool delay_unsubscription) {
+  state_map_[type_url].subscribed_resources.erase(name);
+  if (!delay_unsubscription) SendMessageLocked(type_url);
+}
+
+bool XdsClient::ChannelState::AdsCallState::HasSubscribedResources() const {
+  for (const auto& p : state_map_) {
+    if (!p.second.subscribed_resources.empty()) return true;
+  }
+  return false;
+}
+
+void XdsClient::ChannelState::AdsCallState::AcceptLdsUpdate(
+    absl::optional<XdsApi::LdsUpdate> lds_update) {
+  if (!lds_update.has_value()) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] LDS update does not include requested resource",
+            xds_client());
+    xds_client()->service_config_watcher_->OnError(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "LDS update does not include requested resource"));
+    return;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] LDS update received: route_config_name=%s, "
+            "cluster_name=%s",
+            xds_client(),
+            (!lds_update->route_config_name.empty()
+                 ? lds_update->route_config_name.c_str()
+                 : "<inlined>"),
+            (lds_update->rds_update.has_value()
+                 ? lds_update->rds_update->cluster_name.c_str()
+                 : "<to be obtained via RDS>"));
+  }
+  auto& lds_state = state_map_[XdsApi::kLdsTypeUrl];
+  auto& state = lds_state.subscribed_resources[xds_client()->server_name_];
+  if (state != nullptr) state->Finish();
+  // Ignore identical update.
+  if (xds_client()->lds_result_ == lds_update) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO,
+              "[xds_client %p] LDS update identical to current, ignoring.",
+              xds_client());
+    }
+    return;
+  }
+  if (xds_client()->lds_result_.has_value() &&
+      !xds_client()->lds_result_->route_config_name.empty()) {
+    Unsubscribe(
+        XdsApi::kRdsTypeUrl, xds_client()->lds_result_->route_config_name,
+        /*delay_unsubscription=*/!lds_update->route_config_name.empty());
+  }
+  xds_client()->lds_result_ = std::move(lds_update);
+  if (xds_client()->lds_result_->rds_update.has_value()) {
+    // If the RouteConfiguration was found inlined in LDS response, notify
+    // the watcher immediately.
+    RefCountedPtr<ServiceConfig> service_config;
+    grpc_error* error = xds_client()->CreateServiceConfig(
+        xds_client()->lds_result_->rds_update->cluster_name, &service_config);
+    if (error == GRPC_ERROR_NONE) {
+      xds_client()->service_config_watcher_->OnServiceConfigChanged(
+          std::move(service_config));
+    } else {
+      xds_client()->service_config_watcher_->OnError(error);
+    }
+  } else {
+    // Send RDS request for dynamic resolution.
+    Subscribe(XdsApi::kRdsTypeUrl,
+              xds_client()->lds_result_->route_config_name);
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::AcceptRdsUpdate(
+    absl::optional<XdsApi::RdsUpdate> rds_update) {
+  if (!rds_update.has_value()) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] RDS update does not include requested resource",
+            xds_client());
+    xds_client()->service_config_watcher_->OnError(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "RDS update does not include requested resource"));
+    return;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] RDS update received: cluster_name=%s",
+            xds_client(), rds_update->cluster_name.c_str());
+  }
+  auto& rds_state = state_map_[XdsApi::kRdsTypeUrl];
+  auto& state =
+      rds_state
+          .subscribed_resources[xds_client()->lds_result_->route_config_name];
+  if (state != nullptr) state->Finish();
+  // Ignore identical update.
+  if (xds_client()->rds_result_ == rds_update) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO,
+              "[xds_client %p] RDS update identical to current, ignoring.",
+              xds_client());
+    }
+    return;
+  }
+  xds_client()->rds_result_ = std::move(rds_update);
+  // Notify the watcher.
+  RefCountedPtr<ServiceConfig> service_config;
+  grpc_error* error = xds_client()->CreateServiceConfig(
+      xds_client()->rds_result_->cluster_name, &service_config);
+  if (error == GRPC_ERROR_NONE) {
+    xds_client()->service_config_watcher_->OnServiceConfigChanged(
+        std::move(service_config));
+  } else {
+    xds_client()->service_config_watcher_->OnError(error);
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::AcceptCdsUpdate(
+    XdsApi::CdsUpdateMap cds_update_map) {
+  auto& cds_state = state_map_[XdsApi::kCdsTypeUrl];
+  std::set<std::string> eds_resource_names_seen;
+  for (auto& p : cds_update_map) {
+    const char* cluster_name = p.first.c_str();
+    XdsApi::CdsUpdate& cds_update = p.second;
+    auto& state = cds_state.subscribed_resources[cluster_name];
+    if (state != nullptr) state->Finish();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO,
+              "[xds_client %p] CDS update (cluster=%s) received: "
+              "eds_service_name=%s, lrs_load_reporting_server_name=%s",
+              xds_client(), cluster_name, cds_update.eds_service_name.c_str(),
+              cds_update.lrs_load_reporting_server_name.has_value()
+                  ? cds_update.lrs_load_reporting_server_name.value().c_str()
+                  : "(N/A)");
+    }
+    // Record the EDS resource names seen.
+    eds_resource_names_seen.insert(cds_update.eds_service_name.empty()
+                                       ? cluster_name
+                                       : cds_update.eds_service_name);
+    // Ignore identical update.
+    ClusterState& cluster_state = xds_client()->cluster_map_[cluster_name];
+    if (cluster_state.update.has_value() &&
+        cds_update.eds_service_name == cluster_state.update->eds_service_name &&
+        cds_update.lrs_load_reporting_server_name ==
+            cluster_state.update->lrs_load_reporting_server_name) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+        gpr_log(GPR_INFO,
+                "[xds_client %p] CDS update identical to current, ignoring.",
+                xds_client());
+      }
+      continue;
+    }
+    // Update the cluster state.
+    cluster_state.update = std::move(cds_update);
+    // Notify all watchers.
+    for (const auto& p : cluster_state.watchers) {
+      p.first->OnClusterChanged(cluster_state.update.value());
+    }
+  }
+  // For any subscribed resource that is not present in the update,
+  // remove it from the cache and notify watchers of the error.
+  for (const auto& p : cds_state.subscribed_resources) {
+    const std::string& cluster_name = p.first;
+    if (cds_update_map.find(cluster_name) == cds_update_map.end()) {
+      ClusterState& cluster_state = xds_client()->cluster_map_[cluster_name];
+      cluster_state.update.reset();
+      for (const auto& p : cluster_state.watchers) {
+        p.first->OnError(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "Cluster not present in CDS update"));
+      }
+    }
+  }
+  // Also remove any EDS resources that are no longer referred to by any CDS
+  // resources.
+  auto& eds_state = state_map_[XdsApi::kEdsTypeUrl];
+  for (const auto& p : eds_state.subscribed_resources) {
+    const std::string& eds_resource_name = p.first;
+    if (eds_resource_names_seen.find(eds_resource_name) ==
+        eds_resource_names_seen.end()) {
+      EndpointState& endpoint_state =
+          xds_client()->endpoint_map_[eds_resource_name];
+      endpoint_state.update.reset();
+      for (const auto& p : endpoint_state.watchers) {
+        p.first->OnError(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "ClusterLoadAssignment resource removed due to CDS update"));
+      }
+    }
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::AcceptEdsUpdate(
+    XdsApi::EdsUpdateMap eds_update_map) {
+  auto& eds_state = state_map_[XdsApi::kEdsTypeUrl];
+  for (auto& p : eds_update_map) {
+    const char* eds_service_name = p.first.c_str();
+    XdsApi::EdsUpdate& eds_update = p.second;
+    auto& state = eds_state.subscribed_resources[eds_service_name];
+    if (state != nullptr) state->Finish();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO,
+              "[xds_client %p] EDS response with %" PRIuPTR
+              " priorities and %" PRIuPTR
+              " drop categories received (drop_all=%d)",
+              xds_client(), eds_update.priority_list_update.size(),
+              eds_update.drop_config->drop_category_list().size(),
+              eds_update.drop_config->drop_all());
+      for (size_t priority = 0;
+           priority < eds_update.priority_list_update.size(); ++priority) {
+        const auto* locality_map_update = eds_update.priority_list_update.Find(
+            static_cast<uint32_t>(priority));
+        gpr_log(GPR_INFO,
+                "[xds_client %p] Priority %" PRIuPTR " contains %" PRIuPTR
+                " localities",
+                xds_client(), priority, locality_map_update->size());
+        size_t locality_count = 0;
+        for (const auto& p : locality_map_update->localities) {
+          const auto& locality = p.second;
+          gpr_log(GPR_INFO,
+                  "[xds_client %p] Priority %" PRIuPTR ", locality %" PRIuPTR
+                  " %s has weight %d, contains %" PRIuPTR " server addresses",
+                  xds_client(), priority, locality_count,
+                  locality.name->AsHumanReadableString(), locality.lb_weight,
+                  locality.serverlist.size());
+          for (size_t i = 0; i < locality.serverlist.size(); ++i) {
+            char* ipport;
+            grpc_sockaddr_to_string(&ipport, &locality.serverlist[i].address(),
+                                    false);
+            gpr_log(GPR_INFO,
+                    "[xds_client %p] Priority %" PRIuPTR ", locality %" PRIuPTR
+                    " %s, server address %" PRIuPTR ": %s",
+                    xds_client(), priority, locality_count,
+                    locality.name->AsHumanReadableString(), i, ipport);
+            gpr_free(ipport);
+          }
+          ++locality_count;
+        }
+      }
+      for (size_t i = 0;
+           i < eds_update.drop_config->drop_category_list().size(); ++i) {
+        const XdsApi::DropConfig::DropCategory& drop_category =
+            eds_update.drop_config->drop_category_list()[i];
+        gpr_log(GPR_INFO,
+                "[xds_client %p] Drop category %s has drop rate %d per million",
+                xds_client(), drop_category.name.c_str(),
+                drop_category.parts_per_million);
+      }
+    }
+    EndpointState& endpoint_state =
+        xds_client()->endpoint_map_[eds_service_name];
+    // Ignore identical update.
+    if (endpoint_state.update.has_value()) {
+      const XdsApi::EdsUpdate& prev_update = endpoint_state.update.value();
+      const bool priority_list_changed =
+          prev_update.priority_list_update != eds_update.priority_list_update;
+      const bool drop_config_changed =
+          prev_update.drop_config == nullptr ||
+          *prev_update.drop_config != *eds_update.drop_config;
+      if (!priority_list_changed && !drop_config_changed) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+          gpr_log(GPR_INFO,
+                  "[xds_client %p] EDS update identical to current, ignoring.",
+                  xds_client());
+        }
+        continue;
+      }
+    }
+    // Update the cluster state.
+    endpoint_state.update = std::move(eds_update);
+    // Notify all watchers.
+    for (const auto& p : endpoint_state.watchers) {
+      p.first->OnEndpointChanged(endpoint_state.update.value());
+    }
+  }
+}
+
+void XdsClient::ChannelState::AdsCallState::OnRequestSent(void* arg,
+                                                          grpc_error* error) {
+  AdsCallState* ads_calld = static_cast<AdsCallState*>(arg);
+  ads_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&ads_calld->on_request_sent_, OnRequestSentLocked,
+                        ads_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::AdsCallState::OnRequestSentLocked(
+    void* arg, grpc_error* error) {
+  AdsCallState* self = static_cast<AdsCallState*>(arg);
+  if (self->IsCurrentCallOnChannel() && error == GRPC_ERROR_NONE) {
+    // Clean up the sent message.
+    grpc_byte_buffer_destroy(self->send_message_payload_);
+    self->send_message_payload_ = nullptr;
+    // Continue to send another pending message if any.
+    // TODO(roth): The current code to handle buffered messages has the
+    // advantage of sending only the most recent list of resource names for
+    // each resource type (no matter how many times that resource type has
+    // been requested to send while the current message sending is still
+    // pending). But its disadvantage is that we send the requests in fixed
+    // order of resource types. We need to fix this if we are seeing some
+    // resource type(s) starved due to frequent requests of other resource
+    // type(s).
+    auto it = self->buffered_requests_.begin();
+    if (it != self->buffered_requests_.end()) {
+      self->SendMessageLocked(*it);
+      self->buffered_requests_.erase(it);
+    }
+  }
+  self->Unref(DEBUG_LOCATION, "ADS+OnRequestSentLocked");
+}
+
+void XdsClient::ChannelState::AdsCallState::OnResponseReceived(
+    void* arg, grpc_error* error) {
+  AdsCallState* ads_calld = static_cast<AdsCallState*>(arg);
+  ads_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&ads_calld->on_response_received_,
+                        OnResponseReceivedLocked, ads_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::AdsCallState::OnResponseReceivedLocked(
+    void* arg, grpc_error* /*error*/) {
+  AdsCallState* ads_calld = static_cast<AdsCallState*>(arg);
+  XdsClient* xds_client = ads_calld->xds_client();
+  // Empty payload means the call was cancelled.
+  if (!ads_calld->IsCurrentCallOnChannel() ||
+      ads_calld->recv_message_payload_ == nullptr) {
+    ads_calld->Unref(DEBUG_LOCATION, "ADS+OnResponseReceivedLocked");
+    return;
+  }
+  // Read the response.
+  grpc_byte_buffer_reader bbr;
+  grpc_byte_buffer_reader_init(&bbr, ads_calld->recv_message_payload_);
+  grpc_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+  grpc_byte_buffer_reader_destroy(&bbr);
+  grpc_byte_buffer_destroy(ads_calld->recv_message_payload_);
+  ads_calld->recv_message_payload_ = nullptr;
+  // TODO(juanlishen): When we convert this to use the xds protocol, the
+  // balancer will send us a fallback timeout such that we should go into
+  // fallback mode if we have lost contact with the balancer after a certain
+  // period of time. We will need to save the timeout value here, and then
+  // when the balancer call ends, we will need to start a timer for the
+  // specified period of time, and if the timer fires, we go into fallback
+  // mode. We will also need to cancel the timer when we receive a serverlist
+  // from the balancer.
+  // Parse the response.
+  absl::optional<XdsApi::LdsUpdate> lds_update;
+  absl::optional<XdsApi::RdsUpdate> rds_update;
+  XdsApi::CdsUpdateMap cds_update_map;
+  XdsApi::EdsUpdateMap eds_update_map;
+  std::string version;
+  std::string nonce;
+  std::string type_url;
+  // Note that ParseAdsResponse() also validates the response.
+  grpc_error* parse_error = xds_client->api_.ParseAdsResponse(
+      response_slice, xds_client->server_name_,
+      (xds_client->lds_result_.has_value()
+           ? xds_client->lds_result_->route_config_name
+           : ""),
+      ads_calld->ClusterNamesForRequest(),
+      ads_calld->EdsServiceNamesForRequest(), &lds_update, &rds_update,
+      &cds_update_map, &eds_update_map, &version, &nonce, &type_url);
+  grpc_slice_unref_internal(response_slice);
+  if (type_url.empty()) {
+    // Ignore unparsable response.
+    gpr_log(GPR_ERROR,
+            "[xds_client %p] Error parsing ADS response (%s) -- ignoring",
+            xds_client, grpc_error_string(parse_error));
+    GRPC_ERROR_UNREF(parse_error);
+  } else {
+    // Update nonce.
+    auto& state = ads_calld->state_map_[type_url];
+    state.nonce = std::move(nonce);
+    // NACK or ACK the response.
+    if (parse_error != GRPC_ERROR_NONE) {
+      GRPC_ERROR_UNREF(state.error);
+      state.error = parse_error;
+      // NACK unacceptable update.
+      gpr_log(GPR_ERROR,
+              "[xds_client %p] ADS response invalid for resource type %s "
+              "version %s, will NACK: nonce=%s error=%s",
+              xds_client, type_url.c_str(), version.c_str(),
+              state.nonce.c_str(), grpc_error_string(parse_error));
+      ads_calld->SendMessageLocked(type_url);
+    } else {
+      ads_calld->seen_response_ = true;
+      // Accept the ADS response according to the type_url.
+      if (type_url == XdsApi::kLdsTypeUrl) {
+        ads_calld->AcceptLdsUpdate(std::move(lds_update));
+      } else if (type_url == XdsApi::kRdsTypeUrl) {
+        ads_calld->AcceptRdsUpdate(std::move(rds_update));
+      } else if (type_url == XdsApi::kCdsTypeUrl) {
+        ads_calld->AcceptCdsUpdate(std::move(cds_update_map));
+      } else if (type_url == XdsApi::kEdsTypeUrl) {
+        ads_calld->AcceptEdsUpdate(std::move(eds_update_map));
+      }
+      state.version = std::move(version);
+      // ACK the update.
+      ads_calld->SendMessageLocked(type_url);
+      // Start load reporting if needed.
+      auto& lrs_call = ads_calld->chand()->lrs_calld_;
+      if (lrs_call != nullptr) {
+        LrsCallState* lrs_calld = lrs_call->calld();
+        if (lrs_calld != nullptr) lrs_calld->MaybeStartReportingLocked();
+      }
+    }
+  }
+  if (xds_client->shutting_down_) {
+    ads_calld->Unref(DEBUG_LOCATION,
+                     "ADS+OnResponseReceivedLocked+xds_shutdown");
+    return;
+  }
+  // Keep listening for updates.
+  grpc_op op;
+  memset(&op, 0, sizeof(op));
+  op.op = GRPC_OP_RECV_MESSAGE;
+  op.data.recv_message.recv_message = &ads_calld->recv_message_payload_;
+  op.flags = 0;
+  op.reserved = nullptr;
+  GPR_ASSERT(ads_calld->call_ != nullptr);
+  // Reuse the "ADS+OnResponseReceivedLocked" ref taken in ctor.
+  GRPC_CLOSURE_INIT(&ads_calld->on_response_received_, OnResponseReceived,
+                    ads_calld, grpc_schedule_on_exec_ctx);
+  const grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      ads_calld->call_, &op, 1, &ads_calld->on_response_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+void XdsClient::ChannelState::AdsCallState::OnStatusReceived(
+    void* arg, grpc_error* error) {
+  AdsCallState* ads_calld = static_cast<AdsCallState*>(arg);
+  ads_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&ads_calld->on_status_received_, OnStatusReceivedLocked,
+                        ads_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::AdsCallState::OnStatusReceivedLocked(
+    void* arg, grpc_error* error) {
+  AdsCallState* ads_calld = static_cast<AdsCallState*>(arg);
+  ChannelState* chand = ads_calld->chand();
+  XdsClient* xds_client = ads_calld->xds_client();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    char* status_details = grpc_slice_to_c_string(ads_calld->status_details_);
+    gpr_log(GPR_INFO,
+            "[xds_client %p] ADS call status received. Status = %d, details "
+            "= '%s', (chand: %p, ads_calld: %p, call: %p), error '%s'",
+            xds_client, ads_calld->status_code_, status_details, chand,
+            ads_calld, ads_calld->call_, grpc_error_string(error));
+    gpr_free(status_details);
+  }
+  // Ignore status from a stale call.
+  if (ads_calld->IsCurrentCallOnChannel()) {
+    // Try to restart the call.
+    ads_calld->parent_->OnCallFinishedLocked();
+    // Send error to all watchers.
+    xds_client->NotifyOnError(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("xds call failed"));
+  }
+  ads_calld->Unref(DEBUG_LOCATION, "ADS+OnStatusReceivedLocked");
+}
+
+bool XdsClient::ChannelState::AdsCallState::IsCurrentCallOnChannel() const {
+  // If the retryable ADS call is null (which only happens when the xds channel
+  // is shutting down), all the ADS calls are stale.
+  if (chand()->ads_calld_ == nullptr) return false;
+  return this == chand()->ads_calld_->calld();
+}
+
+std::set<StringView>
+XdsClient::ChannelState::AdsCallState::ClusterNamesForRequest() {
+  std::set<StringView> cluster_names;
+  for (auto& p : state_map_[XdsApi::kCdsTypeUrl].subscribed_resources) {
+    cluster_names.insert(p.first);
+    OrphanablePtr<ResourceState>& state = p.second;
+    state->Start(Ref());
+  }
+  return cluster_names;
+}
+
+std::set<StringView>
+XdsClient::ChannelState::AdsCallState::EdsServiceNamesForRequest() {
+  std::set<StringView> eds_names;
+  for (auto& p : state_map_[XdsApi::kEdsTypeUrl].subscribed_resources) {
+    eds_names.insert(p.first);
+    OrphanablePtr<ResourceState>& state = p.second;
+    state->Start(Ref());
+  }
+  return eds_names;
+}
+
+//
+// XdsClient::ChannelState::LrsCallState::Reporter
+//
+
+void XdsClient::ChannelState::LrsCallState::Reporter::Orphan() {
+  if (next_report_timer_callback_pending_) {
+    grpc_timer_cancel(&next_report_timer_);
+  }
+}
+
+void XdsClient::ChannelState::LrsCallState::Reporter::
+    ScheduleNextReportLocked() {
+  const grpc_millis next_report_time = ExecCtx::Get()->Now() + report_interval_;
+  GRPC_CLOSURE_INIT(&on_next_report_timer_, OnNextReportTimer, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&next_report_timer_, next_report_time,
+                  &on_next_report_timer_);
+  next_report_timer_callback_pending_ = true;
+}
+
+void XdsClient::ChannelState::LrsCallState::Reporter::OnNextReportTimer(
+    void* arg, grpc_error* error) {
+  Reporter* self = static_cast<Reporter*>(arg);
+  self->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&self->on_next_report_timer_, OnNextReportTimerLocked,
+                        self, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::LrsCallState::Reporter::OnNextReportTimerLocked(
+    void* arg, grpc_error* error) {
+  Reporter* self = static_cast<Reporter*>(arg);
+  self->next_report_timer_callback_pending_ = false;
+  if (error != GRPC_ERROR_NONE || !self->IsCurrentReporterOnCall()) {
+    self->Unref(DEBUG_LOCATION, "Reporter+timer");
+    return;
+  }
+  self->SendReportLocked();
+}
+
+namespace {
+
+bool LoadReportCountersAreZero(const XdsApi::ClusterLoadReportMap& snapshot) {
+  for (const auto& p : snapshot) {
+    const XdsApi::ClusterLoadReport& cluster_snapshot = p.second;
+    for (const auto& q : cluster_snapshot.dropped_requests) {
+      if (q.second > 0) return false;
+    }
+    for (const auto& q : cluster_snapshot.locality_stats) {
+      const XdsClusterLocalityStats::Snapshot& locality_snapshot = q.second;
+      if (!locality_snapshot.IsZero()) return false;
+    }
+  }
+  return true;
+}
+
+}  // namespace
+
+void XdsClient::ChannelState::LrsCallState::Reporter::SendReportLocked() {
+  // Construct snapshot from all reported stats.
+  XdsApi::ClusterLoadReportMap snapshot =
+      xds_client()->BuildLoadReportSnapshot(parent_->cluster_names_);
+  // Skip client load report if the counters were all zero in the last
+  // report and they are still zero in this one.
+  const bool old_val = last_report_counters_were_zero_;
+  last_report_counters_were_zero_ = LoadReportCountersAreZero(snapshot);
+  if (old_val && last_report_counters_were_zero_) {
+    ScheduleNextReportLocked();
+    return;
+  }
+  // Create a request that contains the snapshot.
+  grpc_slice request_payload_slice =
+      xds_client()->api_.CreateLrsRequest(std::move(snapshot));
+  parent_->send_message_payload_ =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_slice_unref_internal(request_payload_slice);
+  // Send the report.
+  grpc_op op;
+  memset(&op, 0, sizeof(op));
+  op.op = GRPC_OP_SEND_MESSAGE;
+  op.data.send_message.send_message = parent_->send_message_payload_;
+  GRPC_CLOSURE_INIT(&on_report_done_, OnReportDone, this,
+                    grpc_schedule_on_exec_ctx);
+  grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      parent_->call_, &op, 1, &on_report_done_);
+  if (GPR_UNLIKELY(call_error != GRPC_CALL_OK)) {
+    gpr_log(GPR_ERROR,
+            "[xds_client %p] calld=%p call_error=%d sending client load report",
+            xds_client(), this, call_error);
+    GPR_ASSERT(GRPC_CALL_OK == call_error);
+  }
+}
+
+void XdsClient::ChannelState::LrsCallState::Reporter::OnReportDone(
+    void* arg, grpc_error* error) {
+  Reporter* self = static_cast<Reporter*>(arg);
+  self->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&self->on_report_done_, OnReportDoneLocked, self,
+                        nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::LrsCallState::Reporter::OnReportDoneLocked(
+    void* arg, grpc_error* error) {
+  Reporter* self = static_cast<Reporter*>(arg);
+  grpc_byte_buffer_destroy(self->parent_->send_message_payload_);
+  self->parent_->send_message_payload_ = nullptr;
+  // If there are no more registered stats to report, cancel the call.
+  if (self->xds_client()->load_report_map_.empty()) {
+    self->parent_->chand()->StopLrsCall();
+    self->Unref(DEBUG_LOCATION, "Reporter+report_done+no_more_reporters");
+    return;
+  }
+  if (error != GRPC_ERROR_NONE || !self->IsCurrentReporterOnCall()) {
+    // If this reporter is no longer the current one on the call, the reason
+    // might be that it was orphaned for a new one due to config update.
+    if (!self->IsCurrentReporterOnCall()) {
+      self->parent_->MaybeStartReportingLocked();
+    }
+    self->Unref(DEBUG_LOCATION, "Reporter+report_done");
+    return;
+  }
+  self->ScheduleNextReportLocked();
+}
+
+//
+// XdsClient::ChannelState::LrsCallState
+//
+
+XdsClient::ChannelState::LrsCallState::LrsCallState(
+    RefCountedPtr<RetryableCall<LrsCallState>> parent)
+    : InternallyRefCounted<LrsCallState>(&grpc_xds_client_trace),
+      parent_(std::move(parent)) {
+  // Init the LRS call. Note that the call will progress every time there's
+  // activity in xds_client()->interested_parties_, which is comprised of
+  // the polling entities from client_channel.
+  GPR_ASSERT(xds_client() != nullptr);
+  GPR_ASSERT(!xds_client()->server_name_.empty());
+  call_ = grpc_channel_create_pollset_set_call(
+      chand()->channel_, nullptr, GRPC_PROPAGATE_DEFAULTS,
+      xds_client()->interested_parties_,
+      GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_LOAD_STATS_DOT_V2_DOT_LOADREPORTINGSERVICE_SLASH_STREAMLOADSTATS,
+      nullptr, GRPC_MILLIS_INF_FUTURE, nullptr);
+  GPR_ASSERT(call_ != nullptr);
+  // Init the request payload.
+  grpc_slice request_payload_slice =
+      xds_client()->api_.CreateLrsInitialRequest(xds_client()->server_name_);
+  send_message_payload_ =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_slice_unref_internal(request_payload_slice);
+  // Init other data associated with the LRS call.
+  grpc_metadata_array_init(&initial_metadata_recv_);
+  grpc_metadata_array_init(&trailing_metadata_recv_);
+  // Start the call.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO,
+            "[xds_client %p] Starting LRS call (chand: %p, calld: %p, "
+            "call: %p)",
+            xds_client(), chand(), this, call_);
+  }
+  // Create the ops.
+  grpc_call_error call_error;
+  grpc_op ops[3];
+  memset(ops, 0, sizeof(ops));
+  // Op: send initial metadata.
+  grpc_op* op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY |
+              GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET;
+  op->reserved = nullptr;
+  op++;
+  // Op: send request message.
+  GPR_ASSERT(send_message_payload_ != nullptr);
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = send_message_payload_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  Ref(DEBUG_LOCATION, "LRS+OnInitialRequestSentLocked").release();
+  GRPC_CLOSURE_INIT(&on_initial_request_sent_, OnInitialRequestSent, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 &on_initial_request_sent_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: recv initial metadata.
+  op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata =
+      &initial_metadata_recv_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // Op: recv response.
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &recv_message_payload_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  Ref(DEBUG_LOCATION, "LRS+OnResponseReceivedLocked").release();
+  GRPC_CLOSURE_INIT(&on_response_received_, OnResponseReceived, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 &on_response_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+  // Op: recv server status.
+  op = ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv_;
+  op->data.recv_status_on_client.status = &status_code_;
+  op->data.recv_status_on_client.status_details = &status_details_;
+  op->flags = 0;
+  op->reserved = nullptr;
+  op++;
+  // This callback signals the end of the call, so it relies on the initial
+  // ref instead of a new ref. When it's invoked, it's the initial ref that is
+  // unreffed.
+  GRPC_CLOSURE_INIT(&on_status_received_, OnStatusReceived, this,
+                    grpc_schedule_on_exec_ctx);
+  call_error = grpc_call_start_batch_and_execute(call_, ops, (size_t)(op - ops),
+                                                 &on_status_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+XdsClient::ChannelState::LrsCallState::~LrsCallState() {
+  grpc_metadata_array_destroy(&initial_metadata_recv_);
+  grpc_metadata_array_destroy(&trailing_metadata_recv_);
+  grpc_byte_buffer_destroy(send_message_payload_);
+  grpc_byte_buffer_destroy(recv_message_payload_);
+  grpc_slice_unref_internal(status_details_);
+  GPR_ASSERT(call_ != nullptr);
+  grpc_call_unref(call_);
+}
+
+void XdsClient::ChannelState::LrsCallState::Orphan() {
+  reporter_.reset();
+  GPR_ASSERT(call_ != nullptr);
+  // If we are here because xds_client wants to cancel the call,
+  // on_status_received_ will complete the cancellation and clean up. Otherwise,
+  // we are here because xds_client has to orphan a failed call, then the
+  // following cancellation will be a no-op.
+  grpc_call_cancel(call_, nullptr);
+  // Note that the initial ref is hold by on_status_received_. So the
+  // corresponding unref happens in on_status_received_ instead of here.
+}
+
+void XdsClient::ChannelState::LrsCallState::MaybeStartReportingLocked() {
+  // Don't start again if already started.
+  if (reporter_ != nullptr) return;
+  // Don't start if the previous send_message op (of the initial request or the
+  // last report of the previous reporter) hasn't completed.
+  if (send_message_payload_ != nullptr) return;
+  // Don't start if no LRS response has arrived.
+  if (!seen_response()) return;
+  // Don't start if the ADS call hasn't received any valid response. Note that
+  // this must be the first channel because it is the current channel but its
+  // ADS call hasn't seen any response.
+  if (chand()->ads_calld_ == nullptr ||
+      chand()->ads_calld_->calld() == nullptr ||
+      !chand()->ads_calld_->calld()->seen_response()) {
+    return;
+  }
+  // Start reporting.
+  reporter_ = MakeOrphanable<Reporter>(
+      Ref(DEBUG_LOCATION, "LRS+load_report+start"), load_reporting_interval_);
+}
+
+void XdsClient::ChannelState::LrsCallState::OnInitialRequestSent(
+    void* arg, grpc_error* error) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  lrs_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&lrs_calld->on_initial_request_sent_,
+                        OnInitialRequestSentLocked, lrs_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::LrsCallState::OnInitialRequestSentLocked(
+    void* arg, grpc_error* /*error*/) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  // Clear the send_message_payload_.
+  grpc_byte_buffer_destroy(lrs_calld->send_message_payload_);
+  lrs_calld->send_message_payload_ = nullptr;
+  lrs_calld->MaybeStartReportingLocked();
+  lrs_calld->Unref(DEBUG_LOCATION, "LRS+OnInitialRequestSentLocked");
+}
+
+void XdsClient::ChannelState::LrsCallState::OnResponseReceived(
+    void* arg, grpc_error* error) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  lrs_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&lrs_calld->on_response_received_,
+                        OnResponseReceivedLocked, lrs_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::LrsCallState::OnResponseReceivedLocked(
+    void* arg, grpc_error* /*error*/) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  XdsClient* xds_client = lrs_calld->xds_client();
+  // Empty payload means the call was cancelled.
+  if (!lrs_calld->IsCurrentCallOnChannel() ||
+      lrs_calld->recv_message_payload_ == nullptr) {
+    lrs_calld->Unref(DEBUG_LOCATION, "LRS+OnResponseReceivedLocked");
+    return;
+  }
+  // Read the response.
+  grpc_byte_buffer_reader bbr;
+  grpc_byte_buffer_reader_init(&bbr, lrs_calld->recv_message_payload_);
+  grpc_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+  grpc_byte_buffer_reader_destroy(&bbr);
+  grpc_byte_buffer_destroy(lrs_calld->recv_message_payload_);
+  lrs_calld->recv_message_payload_ = nullptr;
+  // This anonymous lambda is a hack to avoid the usage of goto.
+  [&]() {
+    // Parse the response.
+    std::set<std::string> new_cluster_names;
+    grpc_millis new_load_reporting_interval;
+    grpc_error* parse_error = xds_client->api_.ParseLrsResponse(
+        response_slice, &new_cluster_names, &new_load_reporting_interval);
+    if (parse_error != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR,
+              "[xds_client %p] LRS response parsing failed. error=%s",
+              xds_client, grpc_error_string(parse_error));
+      GRPC_ERROR_UNREF(parse_error);
+      return;
+    }
+    lrs_calld->seen_response_ = true;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO,
+              "[xds_client %p] LRS response received, %" PRIuPTR
+              " cluster names, load_report_interval=%" PRId64 "ms",
+              xds_client, new_cluster_names.size(),
+              new_load_reporting_interval);
+      size_t i = 0;
+      for (const auto& name : new_cluster_names) {
+        gpr_log(GPR_INFO, "[xds_client %p] cluster_name %" PRIuPTR ": %s",
+                xds_client, i++, name.c_str());
+      }
+    }
+    if (new_load_reporting_interval <
+        GRPC_XDS_MIN_CLIENT_LOAD_REPORTING_INTERVAL_MS) {
+      new_load_reporting_interval =
+          GRPC_XDS_MIN_CLIENT_LOAD_REPORTING_INTERVAL_MS;
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+        gpr_log(GPR_INFO,
+                "[xds_client %p] Increased load_report_interval to minimum "
+                "value %dms",
+                xds_client, GRPC_XDS_MIN_CLIENT_LOAD_REPORTING_INTERVAL_MS);
+      }
+    }
+    // Ignore identical update.
+    if (lrs_calld->cluster_names_ == new_cluster_names &&
+        lrs_calld->load_reporting_interval_ == new_load_reporting_interval) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+        gpr_log(GPR_INFO,
+                "[xds_client %p] Incoming LRS response identical to current, "
+                "ignoring.",
+                xds_client);
+      }
+      return;
+    }
+    // Stop current load reporting (if any) to adopt the new config.
+    lrs_calld->reporter_.reset();
+    // Record the new config.
+    lrs_calld->cluster_names_ = std::move(new_cluster_names);
+    lrs_calld->load_reporting_interval_ = new_load_reporting_interval;
+    // Try starting sending load report.
+    lrs_calld->MaybeStartReportingLocked();
+  }();
+  grpc_slice_unref_internal(response_slice);
+  if (xds_client->shutting_down_) {
+    lrs_calld->Unref(DEBUG_LOCATION,
+                     "LRS+OnResponseReceivedLocked+xds_shutdown");
+    return;
+  }
+  // Keep listening for LRS config updates.
+  grpc_op op;
+  memset(&op, 0, sizeof(op));
+  op.op = GRPC_OP_RECV_MESSAGE;
+  op.data.recv_message.recv_message = &lrs_calld->recv_message_payload_;
+  op.flags = 0;
+  op.reserved = nullptr;
+  GPR_ASSERT(lrs_calld->call_ != nullptr);
+  // Reuse the "OnResponseReceivedLocked" ref taken in ctor.
+  GRPC_CLOSURE_INIT(&lrs_calld->on_response_received_, OnResponseReceived,
+                    lrs_calld, grpc_schedule_on_exec_ctx);
+  const grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      lrs_calld->call_, &op, 1, &lrs_calld->on_response_received_);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+void XdsClient::ChannelState::LrsCallState::OnStatusReceived(
+    void* arg, grpc_error* error) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  lrs_calld->xds_client()->combiner_->Run(
+      GRPC_CLOSURE_INIT(&lrs_calld->on_status_received_, OnStatusReceivedLocked,
+                        lrs_calld, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+void XdsClient::ChannelState::LrsCallState::OnStatusReceivedLocked(
+    void* arg, grpc_error* error) {
+  LrsCallState* lrs_calld = static_cast<LrsCallState*>(arg);
+  XdsClient* xds_client = lrs_calld->xds_client();
+  ChannelState* chand = lrs_calld->chand();
+  GPR_ASSERT(lrs_calld->call_ != nullptr);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    char* status_details = grpc_slice_to_c_string(lrs_calld->status_details_);
+    gpr_log(GPR_INFO,
+            "[xds_client %p] LRS call status received. Status = %d, details "
+            "= '%s', (chand: %p, calld: %p, call: %p), error '%s'",
+            xds_client, lrs_calld->status_code_, status_details, chand,
+            lrs_calld, lrs_calld->call_, grpc_error_string(error));
+    gpr_free(status_details);
+  }
+  // Ignore status from a stale call.
+  if (lrs_calld->IsCurrentCallOnChannel()) {
+    GPR_ASSERT(!xds_client->shutting_down_);
+    // Try to restart the call.
+    lrs_calld->parent_->OnCallFinishedLocked();
+  }
+  lrs_calld->Unref(DEBUG_LOCATION, "LRS+OnStatusReceivedLocked");
+}
+
+bool XdsClient::ChannelState::LrsCallState::IsCurrentCallOnChannel() const {
+  // If the retryable LRS call is null (which only happens when the xds channel
+  // is shutting down), all the LRS calls are stale.
+  if (chand()->lrs_calld_ == nullptr) return false;
+  return this == chand()->lrs_calld_->calld();
+}
+
+//
+// XdsClient
+//
+
+namespace {
+
+grpc_millis GetRequestTimeout(const grpc_channel_args& args) {
+  return grpc_channel_args_find_integer(
+      &args, GRPC_ARG_XDS_RESOURCE_DOES_NOT_EXIST_TIMEOUT_MS,
+      {15000, 0, INT_MAX});
+}
+
+}  // namespace
+
+XdsClient::XdsClient(Combiner* combiner, grpc_pollset_set* interested_parties,
+                     StringView server_name,
+                     std::unique_ptr<ServiceConfigWatcherInterface> watcher,
+                     const grpc_channel_args& channel_args, grpc_error** error)
+    : InternallyRefCounted<XdsClient>(&grpc_xds_client_trace),
+      request_timeout_(GetRequestTimeout(channel_args)),
+      combiner_(GRPC_COMBINER_REF(combiner, "xds_client")),
+      interested_parties_(interested_parties),
+      bootstrap_(
+          XdsBootstrap::ReadFromFile(this, &grpc_xds_client_trace, error)),
+      api_(this, &grpc_xds_client_trace,
+           bootstrap_ == nullptr ? nullptr : bootstrap_->node()),
+      server_name_(server_name),
+      service_config_watcher_(std::move(watcher)) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] creating xds client", this);
+  }
+  if (*error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "[xds_client %p] failed to read bootstrap file: %s",
+            this, grpc_error_string(*error));
+    return;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] creating channel to %s", this,
+            bootstrap_->server().server_uri.c_str());
+  }
+  grpc_channel_args* new_args = BuildXdsChannelArgs(channel_args);
+  grpc_channel* channel = CreateXdsChannel(*bootstrap_, *new_args, error);
+  grpc_channel_args_destroy(new_args);
+  if (*error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "[xds_client %p] failed to create xds channel: %s", this,
+            grpc_error_string(*error));
+    return;
+  }
+  chand_ = MakeOrphanable<ChannelState>(
+      Ref(DEBUG_LOCATION, "XdsClient+ChannelState"), channel);
+  if (service_config_watcher_ != nullptr) {
+    chand_->Subscribe(XdsApi::kLdsTypeUrl, std::string(server_name));
+  }
+}
+
+XdsClient::~XdsClient() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] destroying xds client", this);
+  }
+  GRPC_COMBINER_UNREF(combiner_, "xds_client");
+}
+
+void XdsClient::Orphan() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+    gpr_log(GPR_INFO, "[xds_client %p] shutting down xds client", this);
+  }
+  shutting_down_ = true;
+  chand_.reset();
+  // We do not clear cluster_map_ and endpoint_map_ if the xds client was
+  // created by the XdsResolver because the maps contain refs for watchers which
+  // in turn hold refs to the loadbalancing policies. At this point, it is
+  // possible for ADS calls to be in progress. Unreffing the loadbalancing
+  // policies before those calls are done would lead to issues such as
+  // https://github.com/grpc/grpc/issues/20928.
+  if (service_config_watcher_ != nullptr) {
+    cluster_map_.clear();
+    endpoint_map_.clear();
+  }
+  Unref(DEBUG_LOCATION, "XdsClient::Orphan()");
+}
+
+void XdsClient::WatchClusterData(
+    StringView cluster_name, std::unique_ptr<ClusterWatcherInterface> watcher) {
+  std::string cluster_name_str = std::string(cluster_name);
+  ClusterState& cluster_state = cluster_map_[cluster_name_str];
+  ClusterWatcherInterface* w = watcher.get();
+  cluster_state.watchers[w] = std::move(watcher);
+  // If we've already received an CDS update, notify the new watcher
+  // immediately.
+  if (cluster_state.update.has_value()) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO, "[xds_client %p] returning cached cluster data for %s",
+              this, StringViewToCString(cluster_name).get());
+    }
+    w->OnClusterChanged(cluster_state.update.value());
+  }
+  chand_->Subscribe(XdsApi::kCdsTypeUrl, cluster_name_str);
+}
+
+void XdsClient::CancelClusterDataWatch(StringView cluster_name,
+                                       ClusterWatcherInterface* watcher,
+                                       bool delay_unsubscription) {
+  if (shutting_down_) return;
+  std::string cluster_name_str = std::string(cluster_name);
+  ClusterState& cluster_state = cluster_map_[cluster_name_str];
+  auto it = cluster_state.watchers.find(watcher);
+  if (it != cluster_state.watchers.end()) {
+    cluster_state.watchers.erase(it);
+    if (cluster_state.watchers.empty()) {
+      cluster_map_.erase(cluster_name_str);
+      chand_->Unsubscribe(XdsApi::kCdsTypeUrl, cluster_name_str,
+                          delay_unsubscription);
+    }
+  }
+}
+
+void XdsClient::WatchEndpointData(
+    StringView eds_service_name,
+    std::unique_ptr<EndpointWatcherInterface> watcher) {
+  std::string eds_service_name_str = std::string(eds_service_name);
+  EndpointState& endpoint_state = endpoint_map_[eds_service_name_str];
+  EndpointWatcherInterface* w = watcher.get();
+  endpoint_state.watchers[w] = std::move(watcher);
+  // If we've already received an EDS update, notify the new watcher
+  // immediately.
+  if (endpoint_state.update.has_value()) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_client_trace)) {
+      gpr_log(GPR_INFO, "[xds_client %p] returning cached endpoint data for %s",
+              this, StringViewToCString(eds_service_name).get());
+    }
+    w->OnEndpointChanged(endpoint_state.update.value());
+  }
+  chand_->Subscribe(XdsApi::kEdsTypeUrl, eds_service_name_str);
+}
+
+void XdsClient::CancelEndpointDataWatch(StringView eds_service_name,
+                                        EndpointWatcherInterface* watcher,
+                                        bool delay_unsubscription) {
+  if (shutting_down_) return;
+  std::string eds_service_name_str = std::string(eds_service_name);
+  EndpointState& endpoint_state = endpoint_map_[eds_service_name_str];
+  auto it = endpoint_state.watchers.find(watcher);
+  if (it != endpoint_state.watchers.end()) {
+    endpoint_state.watchers.erase(it);
+    if (endpoint_state.watchers.empty()) {
+      endpoint_map_.erase(eds_service_name_str);
+      chand_->Unsubscribe(XdsApi::kEdsTypeUrl, eds_service_name_str,
+                          delay_unsubscription);
+    }
+  }
+}
+
+RefCountedPtr<XdsClusterDropStats> XdsClient::AddClusterDropStats(
+    StringView lrs_server, StringView cluster_name,
+    StringView eds_service_name) {
+  // TODO(roth): When we add support for direct federation, use the
+  // server name specified in lrs_server.
+  auto key =
+      std::make_pair(std::string(cluster_name), std::string(eds_service_name));
+  // We jump through some hoops here to make sure that the StringViews
+  // stored in the XdsClusterDropStats object point to the strings
+  // in the load_report_map_ key, so that they have the same lifetime.
+  auto it = load_report_map_
+                .emplace(std::make_pair(std::move(key), LoadReportState()))
+                .first;
+  auto cluster_drop_stats = MakeRefCounted<XdsClusterDropStats>(
+      Ref(DEBUG_LOCATION, "DropStats"), lrs_server,
+      it->first.first /*cluster_name*/, it->first.second /*eds_service_name*/);
+  it->second.drop_stats.insert(cluster_drop_stats.get());
+  chand_->MaybeStartLrsCall();
+  return cluster_drop_stats;
+}
+
+void XdsClient::RemoveClusterDropStats(
+    StringView /*lrs_server*/, StringView cluster_name,
+    StringView eds_service_name, XdsClusterDropStats* cluster_drop_stats) {
+  auto load_report_it = load_report_map_.find(
+      std::make_pair(std::string(cluster_name), std::string(eds_service_name)));
+  if (load_report_it == load_report_map_.end()) return;
+  LoadReportState& load_report_state = load_report_it->second;
+  // TODO(roth): When we add support for direct federation, use the
+  // server name specified in lrs_server.
+  auto it = load_report_state.drop_stats.find(cluster_drop_stats);
+  if (it != load_report_state.drop_stats.end()) {
+    // Record final drop stats in deleted_drop_stats, which will be
+    // added to the next load report.
+    for (const auto& p : cluster_drop_stats->GetSnapshotAndReset()) {
+      load_report_state.deleted_drop_stats[p.first] += p.second;
+    }
+    load_report_state.drop_stats.erase(it);
+  }
+}
+
+RefCountedPtr<XdsClusterLocalityStats> XdsClient::AddClusterLocalityStats(
+    StringView lrs_server, StringView cluster_name, StringView eds_service_name,
+    RefCountedPtr<XdsLocalityName> locality) {
+  // TODO(roth): When we add support for direct federation, use the
+  // server name specified in lrs_server.
+  auto key =
+      std::make_pair(std::string(cluster_name), std::string(eds_service_name));
+  // We jump through some hoops here to make sure that the StringViews
+  // stored in the XdsClusterLocalityStats object point to the strings
+  // in the load_report_map_ key, so that they have the same lifetime.
+  auto it = load_report_map_
+                .emplace(std::make_pair(std::move(key), LoadReportState()))
+                .first;
+  auto cluster_locality_stats = MakeRefCounted<XdsClusterLocalityStats>(
+      Ref(DEBUG_LOCATION, "LocalityStats"), lrs_server,
+      it->first.first /*cluster_name*/, it->first.second /*eds_service_name*/,
+      locality);
+  it->second.locality_stats[std::move(locality)].locality_stats.insert(
+      cluster_locality_stats.get());
+  chand_->MaybeStartLrsCall();
+  return cluster_locality_stats;
+}
+
+void XdsClient::RemoveClusterLocalityStats(
+    StringView /*lrs_server*/, StringView cluster_name,
+    StringView eds_service_name, const RefCountedPtr<XdsLocalityName>& locality,
+    XdsClusterLocalityStats* cluster_locality_stats) {
+  auto load_report_it = load_report_map_.find(
+      std::make_pair(std::string(cluster_name), std::string(eds_service_name)));
+  if (load_report_it == load_report_map_.end()) return;
+  LoadReportState& load_report_state = load_report_it->second;
+  // TODO(roth): When we add support for direct federation, use the
+  // server name specified in lrs_server.
+  auto locality_it = load_report_state.locality_stats.find(locality);
+  if (locality_it == load_report_state.locality_stats.end()) return;
+  auto& locality_set = locality_it->second.locality_stats;
+  auto it = locality_set.find(cluster_locality_stats);
+  if (it != locality_set.end()) {
+    // Record final snapshot in deleted_locality_stats, which will be
+    // added to the next load report.
+    locality_it->second.deleted_locality_stats.emplace_back(
+        cluster_locality_stats->GetSnapshotAndReset());
+    locality_set.erase(it);
+  }
+}
+
+void XdsClient::ResetBackoff() {
+  if (chand_ != nullptr) {
+    grpc_channel_reset_connect_backoff(chand_->channel());
+  }
+}
+
+grpc_error* XdsClient::CreateServiceConfig(
+    const std::string& cluster_name,
+    RefCountedPtr<ServiceConfig>* service_config) const {
+  char* json;
+  gpr_asprintf(&json,
+               "{\n"
+               "  \"loadBalancingConfig\":[\n"
+               "    { \"cds_experimental\":{\n"
+               "      \"cluster\": \"%s\"\n"
+               "    } }\n"
+               "  ]\n"
+               "}",
+               cluster_name.c_str());
+  grpc_error* error = GRPC_ERROR_NONE;
+  *service_config = ServiceConfig::Create(json, &error);
+  gpr_free(json);
+  return error;
+}
+
+XdsApi::ClusterLoadReportMap XdsClient::BuildLoadReportSnapshot(
+    const std::set<std::string>& clusters) {
+  XdsApi::ClusterLoadReportMap snapshot_map;
+  for (auto load_report_it = load_report_map_.begin();
+       load_report_it != load_report_map_.end();) {
+    // Cluster key is cluster and EDS service name.
+    const auto& cluster_key = load_report_it->first;
+    LoadReportState& load_report = load_report_it->second;
+    // If the CDS response for a cluster indicates to use LRS but the
+    // LRS server does not say that it wants reports for this cluster,
+    // then we'll have stats objects here whose data we're not going to
+    // include in the load report.  However, we still need to clear out
+    // the data from the stats objects, so that if the LRS server starts
+    // asking for the data in the future, we don't incorrectly include
+    // data from previous reporting intervals in that future report.
+    const bool record_stats =
+        clusters.find(cluster_key.first) != clusters.end();
+    XdsApi::ClusterLoadReport snapshot;
+    // Aggregate drop stats.
+    snapshot.dropped_requests = std::move(load_report.deleted_drop_stats);
+    for (auto& drop_stats : load_report.drop_stats) {
+      for (const auto& p : drop_stats->GetSnapshotAndReset()) {
+        snapshot.dropped_requests[p.first] += p.second;
+      }
+    }
+    // Aggregate locality stats.
+    for (auto it = load_report.locality_stats.begin();
+         it != load_report.locality_stats.end();) {
+      const RefCountedPtr<XdsLocalityName>& locality_name = it->first;
+      auto& locality_state = it->second;
+      XdsClusterLocalityStats::Snapshot& locality_snapshot =
+          snapshot.locality_stats[locality_name];
+      for (auto& locality_stats : locality_state.locality_stats) {
+        locality_snapshot += locality_stats->GetSnapshotAndReset();
+      }
+      // Add final snapshots from recently deleted locality stats objects.
+      for (auto& deleted_locality_stats :
+           locality_state.deleted_locality_stats) {
+        locality_snapshot += deleted_locality_stats;
+      }
+      locality_state.deleted_locality_stats.clear();
+      // If the only thing left in this entry was final snapshots from
+      // deleted locality stats objects, remove the entry.
+      if (locality_state.locality_stats.empty()) {
+        it = load_report.locality_stats.erase(it);
+      } else {
+        ++it;
+      }
+    }
+    if (record_stats) {
+      // Compute load report interval.
+      const grpc_millis now = ExecCtx::Get()->Now();
+      snapshot.load_report_interval = now - load_report.last_report_time;
+      load_report.last_report_time = now;
+      // Record snapshot.
+      snapshot_map[cluster_key] = std::move(snapshot);
+    }
+    // If the only thing left in this entry was final snapshots from
+    // deleted stats objects, remove the entry.
+    if (load_report.locality_stats.empty() && load_report.drop_stats.empty()) {
+      load_report_it = load_report_map_.erase(load_report_it);
+    } else {
+      ++load_report_it;
+    }
+  }
+  return snapshot_map;
+}
+
+void XdsClient::NotifyOnError(grpc_error* error) {
+  if (service_config_watcher_ != nullptr) {
+    service_config_watcher_->OnError(GRPC_ERROR_REF(error));
+  }
+  for (const auto& p : cluster_map_) {
+    const ClusterState& cluster_state = p.second;
+    for (const auto& p : cluster_state.watchers) {
+      p.first->OnError(GRPC_ERROR_REF(error));
+    }
+  }
+  for (const auto& p : endpoint_map_) {
+    const EndpointState& endpoint_state = p.second;
+    for (const auto& p : endpoint_state.watchers) {
+      p.first->OnError(GRPC_ERROR_REF(error));
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void* XdsClient::ChannelArgCopy(void* p) {
+  XdsClient* xds_client = static_cast<XdsClient*>(p);
+  xds_client->Ref(DEBUG_LOCATION, "channel arg").release();
+  return p;
+}
+
+void XdsClient::ChannelArgDestroy(void* p) {
+  XdsClient* xds_client = static_cast<XdsClient*>(p);
+  xds_client->Unref(DEBUG_LOCATION, "channel arg");
+}
+
+int XdsClient::ChannelArgCmp(void* p, void* q) { return GPR_ICMP(p, q); }
+
+const grpc_arg_pointer_vtable XdsClient::kXdsClientVtable = {
+    XdsClient::ChannelArgCopy, XdsClient::ChannelArgDestroy,
+    XdsClient::ChannelArgCmp};
+
+grpc_arg XdsClient::MakeChannelArg() const {
+  return grpc_channel_arg_pointer_create(const_cast<char*>(GRPC_ARG_XDS_CLIENT),
+                                         const_cast<XdsClient*>(this),
+                                         &XdsClient::kXdsClientVtable);
+}
+
+RefCountedPtr<XdsClient> XdsClient::GetFromChannelArgs(
+    const grpc_channel_args& args) {
+  XdsClient* xds_client =
+      grpc_channel_args_find_pointer<XdsClient>(&args, GRPC_ARG_XDS_CLIENT);
+  if (xds_client != nullptr) return xds_client->Ref();
+  return nullptr;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.h
new file mode 100644
index 0000000..c6ef4f8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client.h	
@@ -0,0 +1,274 @@
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <set>
+
+#include "absl/types/optional.h"
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/ext/filters/client_channel/xds/xds_api.h"
+#include "src/core/ext/filters/client_channel/xds/xds_bootstrap.h"
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+namespace grpc_core {
+
+extern TraceFlag xds_client_trace;
+
+class XdsClient : public InternallyRefCounted<XdsClient> {
+ public:
+  // Service config watcher interface.  Implemented by callers.
+  class ServiceConfigWatcherInterface {
+   public:
+    virtual ~ServiceConfigWatcherInterface() = default;
+
+    virtual void OnServiceConfigChanged(
+        RefCountedPtr<ServiceConfig> service_config) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // Cluster data watcher interface.  Implemented by callers.
+  class ClusterWatcherInterface {
+   public:
+    virtual ~ClusterWatcherInterface() = default;
+
+    virtual void OnClusterChanged(XdsApi::CdsUpdate cluster_data) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // Endpoint data watcher interface.  Implemented by callers.
+  class EndpointWatcherInterface {
+   public:
+    virtual ~EndpointWatcherInterface() = default;
+
+    virtual void OnEndpointChanged(XdsApi::EdsUpdate update) = 0;
+
+    virtual void OnError(grpc_error* error) = 0;
+  };
+
+  // If *error is not GRPC_ERROR_NONE after construction, then there was
+  // an error initializing the client.
+  XdsClient(Combiner* combiner, grpc_pollset_set* interested_parties,
+            StringView server_name,
+            std::unique_ptr<ServiceConfigWatcherInterface> watcher,
+            const grpc_channel_args& channel_args, grpc_error** error);
+  ~XdsClient();
+
+  void Orphan() override;
+
+  // Start and cancel cluster data watch for a cluster.
+  // The XdsClient takes ownership of the watcher, but the caller may
+  // keep a raw pointer to the watcher, which may be used only for
+  // cancellation.  (Because the caller does not own the watcher, the
+  // pointer must not be used for any other purpose.)
+  // If the caller is going to start a new watch after cancelling the
+  // old one, it should set delay_unsubscription to true.
+  void WatchClusterData(StringView cluster_name,
+                        std::unique_ptr<ClusterWatcherInterface> watcher);
+  void CancelClusterDataWatch(StringView cluster_name,
+                              ClusterWatcherInterface* watcher,
+                              bool delay_unsubscription = false);
+
+  // Start and cancel endpoint data watch for a cluster.
+  // The XdsClient takes ownership of the watcher, but the caller may
+  // keep a raw pointer to the watcher, which may be used only for
+  // cancellation.  (Because the caller does not own the watcher, the
+  // pointer must not be used for any other purpose.)
+  // If the caller is going to start a new watch after cancelling the
+  // old one, it should set delay_unsubscription to true.
+  void WatchEndpointData(StringView eds_service_name,
+                         std::unique_ptr<EndpointWatcherInterface> watcher);
+  void CancelEndpointDataWatch(StringView eds_service_name,
+                               EndpointWatcherInterface* watcher,
+                               bool delay_unsubscription = false);
+
+  // Adds and removes drop stats for cluster_name and eds_service_name.
+  RefCountedPtr<XdsClusterDropStats> AddClusterDropStats(
+      StringView lrs_server, StringView cluster_name,
+      StringView eds_service_name);
+  void RemoveClusterDropStats(StringView /*lrs_server*/,
+                              StringView cluster_name,
+                              StringView eds_service_name,
+                              XdsClusterDropStats* cluster_drop_stats);
+
+  // Adds and removes locality stats for cluster_name and eds_service_name
+  // for the specified locality.
+  RefCountedPtr<XdsClusterLocalityStats> AddClusterLocalityStats(
+      StringView lrs_server, StringView cluster_name,
+      StringView eds_service_name, RefCountedPtr<XdsLocalityName> locality);
+  void RemoveClusterLocalityStats(
+      StringView /*lrs_server*/, StringView cluster_name,
+      StringView eds_service_name,
+      const RefCountedPtr<XdsLocalityName>& locality,
+      XdsClusterLocalityStats* cluster_locality_stats);
+
+  // Resets connection backoff state.
+  void ResetBackoff();
+
+  // Helpers for encoding the XdsClient object in channel args.
+  grpc_arg MakeChannelArg() const;
+  static RefCountedPtr<XdsClient> GetFromChannelArgs(
+      const grpc_channel_args& args);
+
+ private:
+  // Contains a channel to the xds server and all the data related to the
+  // channel.  Holds a ref to the xds client object.
+  // TODO(roth): This is separate from the XdsClient object because it was
+  // originally designed to be able to swap itself out in case the
+  // balancer name changed.  Now that the balancer name is going to be
+  // coming from the bootstrap file, we don't really need this level of
+  // indirection unless we decide to support watching the bootstrap file
+  // for changes.  At some point, if we decide that we're never going to
+  // need to do that, then we can eliminate this class and move its
+  // contents directly into the XdsClient class.
+  class ChannelState : public InternallyRefCounted<ChannelState> {
+   public:
+    template <typename T>
+    class RetryableCall;
+
+    class AdsCallState;
+    class LrsCallState;
+
+    ChannelState(RefCountedPtr<XdsClient> xds_client, grpc_channel* channel);
+    ~ChannelState();
+
+    void Orphan() override;
+
+    grpc_channel* channel() const { return channel_; }
+    XdsClient* xds_client() const { return xds_client_.get(); }
+    AdsCallState* ads_calld() const;
+    LrsCallState* lrs_calld() const;
+
+    void MaybeStartLrsCall();
+    void StopLrsCall();
+
+    bool HasActiveAdsCall() const;
+
+    void StartConnectivityWatchLocked();
+    void CancelConnectivityWatchLocked();
+
+    void Subscribe(const std::string& type_url, const std::string& name);
+    void Unsubscribe(const std::string& type_url, const std::string& name,
+                     bool delay_unsubscription);
+
+   private:
+    class StateWatcher;
+
+    // The owning xds client.
+    RefCountedPtr<XdsClient> xds_client_;
+
+    // The channel and its status.
+    grpc_channel* channel_;
+    bool shutting_down_ = false;
+    StateWatcher* watcher_ = nullptr;
+
+    // The retryable XDS calls.
+    OrphanablePtr<RetryableCall<AdsCallState>> ads_calld_;
+    OrphanablePtr<RetryableCall<LrsCallState>> lrs_calld_;
+  };
+
+  struct ClusterState {
+    std::map<ClusterWatcherInterface*, std::unique_ptr<ClusterWatcherInterface>>
+        watchers;
+    // The latest data seen from CDS.
+    absl::optional<XdsApi::CdsUpdate> update;
+  };
+
+  struct EndpointState {
+    std::map<EndpointWatcherInterface*,
+             std::unique_ptr<EndpointWatcherInterface>>
+        watchers;
+    // The latest data seen from EDS.
+    absl::optional<XdsApi::EdsUpdate> update;
+  };
+
+  struct LoadReportState {
+    struct LocalityState {
+      std::set<XdsClusterLocalityStats*> locality_stats;
+      std::vector<XdsClusterLocalityStats::Snapshot> deleted_locality_stats;
+    };
+
+    std::set<XdsClusterDropStats*> drop_stats;
+    XdsClusterDropStats::DroppedRequestsMap deleted_drop_stats;
+    std::map<RefCountedPtr<XdsLocalityName>, LocalityState,
+             XdsLocalityName::Less>
+        locality_stats;
+    grpc_millis last_report_time = ExecCtx::Get()->Now();
+  };
+
+  // Sends an error notification to all watchers.
+  void NotifyOnError(grpc_error* error);
+
+  grpc_error* CreateServiceConfig(
+      const std::string& cluster_name,
+      RefCountedPtr<ServiceConfig>* service_config) const;
+
+  XdsApi::ClusterLoadReportMap BuildLoadReportSnapshot(
+      const std::set<std::string>& clusters);
+
+  // Channel arg vtable functions.
+  static void* ChannelArgCopy(void* p);
+  static void ChannelArgDestroy(void* p);
+  static int ChannelArgCmp(void* p, void* q);
+
+  static const grpc_arg_pointer_vtable kXdsClientVtable;
+
+  const grpc_millis request_timeout_;
+
+  Combiner* combiner_;
+  grpc_pollset_set* interested_parties_;
+
+  std::unique_ptr<XdsBootstrap> bootstrap_;
+  XdsApi api_;
+
+  const std::string server_name_;
+
+  std::unique_ptr<ServiceConfigWatcherInterface> service_config_watcher_;
+
+  // The channel for communicating with the xds server.
+  OrphanablePtr<ChannelState> chand_;
+
+  absl::optional<XdsApi::LdsUpdate> lds_result_;
+  absl::optional<XdsApi::RdsUpdate> rds_result_;
+
+  // One entry for each watched CDS resource.
+  std::map<std::string /*cluster_name*/, ClusterState> cluster_map_;
+  // One entry for each watched EDS resource.
+  std::map<std::string /*eds_service_name*/, EndpointState> endpoint_map_;
+  std::map<
+      std::pair<std::string /*cluster_name*/, std::string /*eds_service_name*/>,
+      LoadReportState>
+      load_report_map_;
+
+  bool shutting_down_ = false;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.cc
new file mode 100644
index 0000000..f8a3f77
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.cc	
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_client_stats.h"
+
+#include <string.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/xds/xds_client.h"
+
+namespace grpc_core {
+
+//
+// XdsClusterDropStats
+//
+
+XdsClusterDropStats::XdsClusterDropStats(RefCountedPtr<XdsClient> xds_client,
+                                         StringView lrs_server_name,
+                                         StringView cluster_name,
+                                         StringView eds_service_name)
+    : xds_client_(std::move(xds_client)),
+      lrs_server_name_(lrs_server_name),
+      cluster_name_(cluster_name),
+      eds_service_name_(eds_service_name) {}
+
+XdsClusterDropStats::~XdsClusterDropStats() {
+  xds_client_->RemoveClusterDropStats(lrs_server_name_, cluster_name_,
+                                      eds_service_name_, this);
+  xds_client_.reset(DEBUG_LOCATION, "DropStats");
+}
+
+XdsClusterDropStats::DroppedRequestsMap
+XdsClusterDropStats::GetSnapshotAndReset() {
+  MutexLock lock(&mu_);
+  return std::move(dropped_requests_);
+}
+
+void XdsClusterDropStats::AddCallDropped(const std::string& category) {
+  MutexLock lock(&mu_);
+  ++dropped_requests_[category];
+}
+
+//
+// XdsClusterLocalityStats
+//
+
+XdsClusterLocalityStats::XdsClusterLocalityStats(
+    RefCountedPtr<XdsClient> xds_client, StringView lrs_server_name,
+    StringView cluster_name, StringView eds_service_name,
+    RefCountedPtr<XdsLocalityName> name)
+    : xds_client_(std::move(xds_client)),
+      lrs_server_name_(lrs_server_name),
+      cluster_name_(cluster_name),
+      eds_service_name_(eds_service_name),
+      name_(std::move(name)) {}
+
+XdsClusterLocalityStats::~XdsClusterLocalityStats() {
+  xds_client_->RemoveClusterLocalityStats(lrs_server_name_, cluster_name_,
+                                          eds_service_name_, name_, this);
+  xds_client_.reset(DEBUG_LOCATION, "LocalityStats");
+}
+
+namespace {
+
+uint64_t GetAndResetCounter(Atomic<uint64_t>* from) {
+  return from->Exchange(0, MemoryOrder::RELAXED);
+}
+
+}  // namespace
+
+XdsClusterLocalityStats::Snapshot
+XdsClusterLocalityStats::GetSnapshotAndReset() {
+  Snapshot snapshot = {
+      GetAndResetCounter(&total_successful_requests_),
+      // Don't reset total_requests_in_progress because it's not
+      // related to a single reporting interval.
+      total_requests_in_progress_.Load(MemoryOrder::RELAXED),
+      GetAndResetCounter(&total_error_requests_),
+      GetAndResetCounter(&total_issued_requests_)};
+  MutexLock lock(&backend_metrics_mu_);
+  snapshot.backend_metrics = std::move(backend_metrics_);
+  return snapshot;
+}
+
+void XdsClusterLocalityStats::AddCallStarted() {
+  total_issued_requests_.FetchAdd(1, MemoryOrder::RELAXED);
+  total_requests_in_progress_.FetchAdd(1, MemoryOrder::RELAXED);
+}
+
+void XdsClusterLocalityStats::AddCallFinished(bool fail) {
+  Atomic<uint64_t>& to_increment =
+      fail ? total_error_requests_ : total_successful_requests_;
+  to_increment.FetchAdd(1, MemoryOrder::RELAXED);
+  total_requests_in_progress_.FetchAdd(-1, MemoryOrder::ACQ_REL);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.h
new file mode 100644
index 0000000..ab592ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_channel/xds/xds_client_stats.h	
@@ -0,0 +1,199 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+// Forward declaration to avoid circular dependency.
+class XdsClient;
+
+// Locality name.
+class XdsLocalityName : public RefCounted<XdsLocalityName> {
+ public:
+  struct Less {
+    bool operator()(const XdsLocalityName* lhs,
+                    const XdsLocalityName* rhs) const {
+      int cmp_result = lhs->region_.compare(rhs->region_);
+      if (cmp_result != 0) return cmp_result < 0;
+      cmp_result = lhs->zone_.compare(rhs->zone_);
+      if (cmp_result != 0) return cmp_result < 0;
+      return lhs->sub_zone_.compare(rhs->sub_zone_) < 0;
+    }
+
+    bool operator()(const RefCountedPtr<XdsLocalityName>& lhs,
+                    const RefCountedPtr<XdsLocalityName>& rhs) const {
+      return (*this)(lhs.get(), rhs.get());
+    }
+  };
+
+  XdsLocalityName(std::string region, std::string zone, std::string subzone)
+      : region_(std::move(region)),
+        zone_(std::move(zone)),
+        sub_zone_(std::move(subzone)) {}
+
+  bool operator==(const XdsLocalityName& other) const {
+    return region_ == other.region_ && zone_ == other.zone_ &&
+           sub_zone_ == other.sub_zone_;
+  }
+
+  const std::string& region() const { return region_; }
+  const std::string& zone() const { return zone_; }
+  const std::string& sub_zone() const { return sub_zone_; }
+
+  const char* AsHumanReadableString() {
+    if (human_readable_string_ == nullptr) {
+      char* tmp;
+      gpr_asprintf(&tmp, "{region=\"%s\", zone=\"%s\", sub_zone=\"%s\"}",
+                   region_.c_str(), zone_.c_str(), sub_zone_.c_str());
+      human_readable_string_.reset(tmp);
+    }
+    return human_readable_string_.get();
+  }
+
+ private:
+  std::string region_;
+  std::string zone_;
+  std::string sub_zone_;
+  UniquePtr<char> human_readable_string_;
+};
+
+// Drop stats for an xds cluster.
+class XdsClusterDropStats : public RefCounted<XdsClusterDropStats> {
+ public:
+  using DroppedRequestsMap = std::map<std::string /* category */, uint64_t>;
+
+  XdsClusterDropStats(RefCountedPtr<XdsClient> xds_client,
+                      StringView lrs_server_name, StringView cluster_name,
+                      StringView eds_service_name);
+  ~XdsClusterDropStats();
+
+  // Returns a snapshot of this instance and resets all the counters.
+  DroppedRequestsMap GetSnapshotAndReset();
+
+  void AddCallDropped(const std::string& category);
+
+ private:
+  RefCountedPtr<XdsClient> xds_client_;
+  StringView lrs_server_name_;
+  StringView cluster_name_;
+  StringView eds_service_name_;
+  // Protects dropped_requests_. A mutex is necessary because the length of
+  // dropped_requests_ can be accessed by both the picker (from data plane
+  // mutex) and the load reporting thread (from the control plane combiner).
+  Mutex mu_;
+  DroppedRequestsMap dropped_requests_;
+};
+
+// Locality stats for an xds cluster.
+class XdsClusterLocalityStats : public RefCounted<XdsClusterLocalityStats> {
+ public:
+  struct BackendMetric {
+    uint64_t num_requests_finished_with_metric;
+    double total_metric_value;
+
+    BackendMetric& operator+=(const BackendMetric& other) {
+      num_requests_finished_with_metric +=
+          other.num_requests_finished_with_metric;
+      total_metric_value += other.total_metric_value;
+      return *this;
+    }
+
+    bool IsZero() const {
+      return num_requests_finished_with_metric == 0 && total_metric_value == 0;
+    }
+  };
+
+  struct Snapshot {
+    uint64_t total_successful_requests;
+    uint64_t total_requests_in_progress;
+    uint64_t total_error_requests;
+    uint64_t total_issued_requests;
+    std::map<std::string, BackendMetric> backend_metrics;
+
+    Snapshot& operator+=(const Snapshot& other) {
+      total_successful_requests += other.total_successful_requests;
+      total_requests_in_progress += other.total_requests_in_progress;
+      total_error_requests += other.total_error_requests;
+      total_issued_requests += other.total_issued_requests;
+      for (const auto& p : other.backend_metrics) {
+        backend_metrics[p.first] += p.second;
+      }
+      return *this;
+    }
+
+    bool IsZero() const {
+      if (total_successful_requests != 0 || total_requests_in_progress != 0 ||
+          total_error_requests != 0 || total_issued_requests != 0) {
+        return false;
+      }
+      for (const auto& p : backend_metrics) {
+        if (!p.second.IsZero()) return false;
+      }
+      return true;
+    }
+  };
+
+  XdsClusterLocalityStats(RefCountedPtr<XdsClient> xds_client,
+                          StringView lrs_server_name, StringView cluster_name,
+                          StringView eds_service_name,
+                          RefCountedPtr<XdsLocalityName> name);
+  ~XdsClusterLocalityStats();
+
+  // Returns a snapshot of this instance and resets all the counters.
+  Snapshot GetSnapshotAndReset();
+
+  void AddCallStarted();
+  void AddCallFinished(bool fail = false);
+
+ private:
+  RefCountedPtr<XdsClient> xds_client_;
+  StringView lrs_server_name_;
+  StringView cluster_name_;
+  StringView eds_service_name_;
+  RefCountedPtr<XdsLocalityName> name_;
+
+  Atomic<uint64_t> total_successful_requests_{0};
+  Atomic<uint64_t> total_requests_in_progress_{0};
+  Atomic<uint64_t> total_error_requests_{0};
+  Atomic<uint64_t> total_issued_requests_{0};
+
+  // Protects backend_metrics_. A mutex is necessary because the length of
+  // backend_metrics_ can be accessed by both the callback intercepting the
+  // call's recv_trailing_metadata (not from the control plane combiner) and
+  // the load reporting thread (from the control plane combiner).
+  Mutex backend_metrics_mu_;
+  std::map<std::string, BackendMetric> backend_metrics_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_XDS_XDS_CLIENT_STATS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_idle/client_idle_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_idle/client_idle_filter.cc
new file mode 100644
index 0000000..2ea3ead
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/client_idle/client_idle_filter.cc	
@@ -0,0 +1,440 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+// TODO(juanlishen): The idle filter is disabled in client channel by default
+// due to b/143502997. Try to fix the bug and enable the filter by default.
+#define DEFAULT_IDLE_TIMEOUT_MS INT_MAX
+// The user input idle timeout smaller than this would be capped to it.
+#define MIN_IDLE_TIMEOUT_MS (1 /*second*/ * 1000)
+
+namespace grpc_core {
+
+TraceFlag grpc_trace_client_idle_filter(false, "client_idle_filter");
+
+#define GRPC_IDLE_FILTER_LOG(format, ...)                               \
+  do {                                                                  \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_client_idle_filter)) {       \
+      gpr_log(GPR_INFO, "(client idle filter) " format, ##__VA_ARGS__); \
+    }                                                                   \
+  } while (0)
+
+namespace {
+
+/*
+  client_idle_filter maintains a state tracking if there are active calls in the
+  channel and its internal idle_timer_. The states are specified as following:
+
+  +--------------------------------------------+-------------+---------+
+  |               ChannelState                 | idle_timer_ | channel |
+  +--------------------------------------------+-------------+---------+
+  | IDLE                                       | unset       | idle    |
+  | CALLS_ACTIVE                               | unset       | busy    |
+  | TIMER_PENDING                              | set-valid   | idle    |
+  | TIMER_PENDING_CALLS_ACTIVE                 | set-invalid | busy    |
+  | TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START | set-invalid | idle    |
+  +--------------------------------------------+-------------+---------+
+
+  IDLE: The initial state of the client_idle_filter, indicating the channel is
+  in IDLE.
+
+  CALLS_ACTIVE: The channel has 1 or 1+ active calls and the timer is not set.
+
+  TIMER_PENDING: The state after the timer is set and no calls have arrived
+  after the timer is set. The channel must have 0 active call in this state. If
+  the timer is fired in this state, the channel will go into IDLE state.
+
+  TIMER_PENDING_CALLS_ACTIVE: The state after the timer is set and at least one
+  call has arrived after the timer is set. The channel must have 1 or 1+ active
+  calls in this state. If the timer is fired in this state, we won't reschedule
+  it.
+
+  TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START: The state after the timer is set
+  and at least one call has arrived after the timer is set, BUT the channel
+  currently has 0 active call. If the timer is fired in this state, we will
+  reschedule it according to the finish time of the latest call.
+
+  PROCESSING: The state set to block other threads when the setting thread is
+  doing some work to keep state consistency.
+
+  idle_timer_ will not be cancelled (unless the channel is shutting down).
+  If the timer callback is called when the idle_timer_ is valid (i.e. idle_state
+  is TIMER_PENDING), the channel will enter IDLE, otherwise the channel won't be
+  changed.
+
+  State transitions:
+                                            IDLE
+                                            |  ^
+            ---------------------------------  *
+            |                                  *
+            v                                  *
+      CALLS_ACTIVE =================> TIMER_PENDING
+            ^                               |  ^
+            *  ------------------------------  *
+            *  |                               *
+            *  v                               *
+TIMER_PENDING_CALLS_ACTIVE ===> TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START
+            ^                               |
+            |                               |
+            ---------------------------------
+
+  ---> Triggered by IncreaseCallCount()
+  ===> Triggered by DecreaseCallCount()
+  ***> Triggered by IdleTimerCallback()
+*/
+enum ChannelState {
+  IDLE,
+  CALLS_ACTIVE,
+  TIMER_PENDING,
+  TIMER_PENDING_CALLS_ACTIVE,
+  TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START,
+  PROCESSING
+};
+
+grpc_millis GetClientIdleTimeout(const grpc_channel_args* args) {
+  return GPR_MAX(
+      grpc_channel_arg_get_integer(
+          grpc_channel_args_find(args, GRPC_ARG_CLIENT_IDLE_TIMEOUT_MS),
+          {DEFAULT_IDLE_TIMEOUT_MS, 0, INT_MAX}),
+      MIN_IDLE_TIMEOUT_MS);
+}
+
+class ChannelData {
+ public:
+  static grpc_error* Init(grpc_channel_element* elem,
+                          grpc_channel_element_args* args);
+  static void Destroy(grpc_channel_element* elem);
+
+  static void StartTransportOp(grpc_channel_element* elem,
+                               grpc_transport_op* op);
+
+  void IncreaseCallCount();
+
+  void DecreaseCallCount();
+
+ private:
+  ChannelData(grpc_channel_element* elem, grpc_channel_element_args* args,
+              grpc_error** error);
+  ~ChannelData() = default;
+
+  static void IdleTimerCallback(void* arg, grpc_error* error);
+  static void IdleTransportOpCompleteCallback(void* arg, grpc_error* error);
+
+  void StartIdleTimer();
+
+  void EnterIdle();
+
+  grpc_channel_element* elem_;
+  // The channel stack to which we take refs for pending callbacks.
+  grpc_channel_stack* channel_stack_;
+  // Timeout after the last RPC finishes on the client channel at which the
+  // channel goes back into IDLE state.
+  const grpc_millis client_idle_timeout_;
+
+  // Member data used to track the state of channel.
+  grpc_millis last_idle_time_;
+  Atomic<intptr_t> call_count_{0};
+  Atomic<ChannelState> state_{IDLE};
+
+  // Idle timer and its callback closure.
+  grpc_timer idle_timer_;
+  grpc_closure idle_timer_callback_;
+
+  // The transport op telling the client channel to enter IDLE.
+  grpc_transport_op idle_transport_op_;
+  grpc_closure idle_transport_op_complete_callback_;
+};
+
+grpc_error* ChannelData::Init(grpc_channel_element* elem,
+                              grpc_channel_element_args* args) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  new (elem->channel_data) ChannelData(elem, args, &error);
+  return error;
+}
+
+void ChannelData::Destroy(grpc_channel_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->~ChannelData();
+}
+
+void ChannelData::StartTransportOp(grpc_channel_element* elem,
+                                   grpc_transport_op* op) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  // Catch the disconnect_with_error transport op.
+  if (op->disconnect_with_error != nullptr) {
+    // IncreaseCallCount() introduces a dummy call and prevent the timer from
+    // being reset by other threads.
+    chand->IncreaseCallCount();
+    // If the timer has been set, cancel the timer.
+    // No synchronization issues here. grpc_timer_cancel() is valid as long as
+    // the timer has been init()ed before.
+    grpc_timer_cancel(&chand->idle_timer_);
+  }
+  // Pass the op to the next filter.
+  grpc_channel_next_op(elem, op);
+}
+
+void ChannelData::IncreaseCallCount() {
+  const intptr_t previous_value = call_count_.FetchAdd(1, MemoryOrder::RELAXED);
+  GRPC_IDLE_FILTER_LOG("call counter has increased to %" PRIuPTR,
+                       previous_value + 1);
+  if (previous_value == 0) {
+    // This call is the one that makes the channel busy.
+    // Loop here to make sure the previous decrease operation has finished.
+    ChannelState state = state_.Load(MemoryOrder::RELAXED);
+    while (true) {
+      switch (state) {
+        // Timer has not been set. Switch to CALLS_ACTIVE.
+        case IDLE:
+          // In this case, no other threads will modify the state, so we can
+          // just store the value.
+          state_.Store(CALLS_ACTIVE, MemoryOrder::RELAXED);
+          return;
+        // Timer has been set. Switch to TIMER_PENDING_CALLS_ACTIVE.
+        case TIMER_PENDING:
+        case TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START:
+          // At this point, the state may have been switched to IDLE by the
+          // idle timer callback. Therefore, use CAS operation to change the
+          // state atomically.
+          // Use MemoryOrder::ACQUIRE on success to ensure last_idle_time_ has
+          // been properly set in DecreaseCallCount().
+          if (state_.CompareExchangeWeak(&state, TIMER_PENDING_CALLS_ACTIVE,
+                                         MemoryOrder::ACQUIRE,
+                                         MemoryOrder::RELAXED)) {
+            return;
+          }
+          break;
+        default:
+          // The state has not been switched to desired value yet, try again.
+          state = state_.Load(MemoryOrder::RELAXED);
+          break;
+      }
+    }
+  }
+}
+
+void ChannelData::DecreaseCallCount() {
+  const intptr_t previous_value = call_count_.FetchSub(1, MemoryOrder::RELAXED);
+  GRPC_IDLE_FILTER_LOG("call counter has decreased to %" PRIuPTR,
+                       previous_value - 1);
+  if (previous_value == 1) {
+    // This call is the one that makes the channel idle.
+    // last_idle_time_ does not need to be Atomic<> because busy-loops in
+    // IncreaseCallCount(), DecreaseCallCount() and IdleTimerCallback() will
+    // prevent multiple threads from simultaneously accessing this variable.
+    last_idle_time_ = ExecCtx::Get()->Now();
+    ChannelState state = state_.Load(MemoryOrder::RELAXED);
+    while (true) {
+      switch (state) {
+        // Timer has not been set. Set the timer and switch to TIMER_PENDING
+        case CALLS_ACTIVE:
+          // Release store here to make other threads see the updated value of
+          // last_idle_time_.
+          StartIdleTimer();
+          state_.Store(TIMER_PENDING, MemoryOrder::RELEASE);
+          return;
+        // Timer has been set. Switch to
+        // TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START
+        case TIMER_PENDING_CALLS_ACTIVE:
+          // At this point, the state may have been switched to CALLS_ACTIVE by
+          // the idle timer callback. Therefore, use CAS operation to change the
+          // state atomically.
+          // Release store here to make the idle timer callback see the updated
+          // value of last_idle_time_ to properly reset the idle timer.
+          if (state_.CompareExchangeWeak(
+                  &state, TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START,
+                  MemoryOrder::RELEASE, MemoryOrder::RELAXED)) {
+            return;
+          }
+          break;
+        default:
+          // The state has not been switched to desired value yet, try again.
+          state = state_.Load(MemoryOrder::RELAXED);
+          break;
+      }
+    }
+  }
+}
+
+ChannelData::ChannelData(grpc_channel_element* elem,
+                         grpc_channel_element_args* args,
+                         grpc_error** /*error*/)
+    : elem_(elem),
+      channel_stack_(args->channel_stack),
+      client_idle_timeout_(GetClientIdleTimeout(args->channel_args)) {
+  // If the idle filter is explicitly disabled in channel args, this ctor should
+  // not get called.
+  GPR_ASSERT(client_idle_timeout_ != GRPC_MILLIS_INF_FUTURE);
+  GRPC_IDLE_FILTER_LOG("created with max_leisure_time = %" PRId64 " ms",
+                       client_idle_timeout_);
+  // Initialize the idle timer without setting it.
+  grpc_timer_init_unset(&idle_timer_);
+  // Initialize the idle timer callback closure.
+  GRPC_CLOSURE_INIT(&idle_timer_callback_, IdleTimerCallback, this,
+                    grpc_schedule_on_exec_ctx);
+  // Initialize the idle transport op complete callback.
+  GRPC_CLOSURE_INIT(&idle_transport_op_complete_callback_,
+                    IdleTransportOpCompleteCallback, this,
+                    grpc_schedule_on_exec_ctx);
+}
+
+void ChannelData::IdleTimerCallback(void* arg, grpc_error* error) {
+  GRPC_IDLE_FILTER_LOG("timer alarms");
+  ChannelData* chand = static_cast<ChannelData*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    GRPC_IDLE_FILTER_LOG("timer canceled");
+    GRPC_CHANNEL_STACK_UNREF(chand->channel_stack_, "max idle timer callback");
+    return;
+  }
+  bool finished = false;
+  ChannelState state = chand->state_.Load(MemoryOrder::RELAXED);
+  while (!finished) {
+    switch (state) {
+      case TIMER_PENDING:
+        // Change the state to PROCESSING to block IncreaseCallCout() until the
+        // EnterIdle() operation finishes, preventing mistakenly entering IDLE
+        // when active RPC exists.
+        finished = chand->state_.CompareExchangeWeak(
+            &state, PROCESSING, MemoryOrder::ACQUIRE, MemoryOrder::RELAXED);
+        if (finished) {
+          chand->EnterIdle();
+          chand->state_.Store(IDLE, MemoryOrder::RELAXED);
+        }
+        break;
+      case TIMER_PENDING_CALLS_ACTIVE:
+        finished = chand->state_.CompareExchangeWeak(
+            &state, CALLS_ACTIVE, MemoryOrder::RELAXED, MemoryOrder::RELAXED);
+        break;
+      case TIMER_PENDING_CALLS_SEEN_SINCE_TIMER_START:
+        // Change the state to PROCESSING to block IncreaseCallCount() until the
+        // StartIdleTimer() operation finishes, preventing mistakenly restarting
+        // the timer after grpc_timer_cancel() when shutdown.
+        finished = chand->state_.CompareExchangeWeak(
+            &state, PROCESSING, MemoryOrder::ACQUIRE, MemoryOrder::RELAXED);
+        if (finished) {
+          chand->StartIdleTimer();
+          chand->state_.Store(TIMER_PENDING, MemoryOrder::RELAXED);
+        }
+        break;
+      default:
+        // The state has not been switched to desired value yet, try again.
+        state = chand->state_.Load(MemoryOrder::RELAXED);
+        break;
+    }
+  }
+  GRPC_IDLE_FILTER_LOG("timer finishes");
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack_, "max idle timer callback");
+}
+
+void ChannelData::IdleTransportOpCompleteCallback(void* arg,
+                                                  grpc_error* /*error*/) {
+  ChannelData* chand = static_cast<ChannelData*>(arg);
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack_, "idle transport op");
+}
+
+void ChannelData::StartIdleTimer() {
+  GRPC_IDLE_FILTER_LOG("timer has started");
+  // Hold a ref to the channel stack for the timer callback.
+  GRPC_CHANNEL_STACK_REF(channel_stack_, "max idle timer callback");
+  grpc_timer_init(&idle_timer_, last_idle_time_ + client_idle_timeout_,
+                  &idle_timer_callback_);
+}
+
+void ChannelData::EnterIdle() {
+  GRPC_IDLE_FILTER_LOG("the channel will enter IDLE");
+  // Hold a ref to the channel stack for the transport op.
+  GRPC_CHANNEL_STACK_REF(channel_stack_, "idle transport op");
+  // Initialize the transport op.
+  idle_transport_op_ = {};
+  idle_transport_op_.disconnect_with_error = grpc_error_set_int(
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("enter idle"),
+      GRPC_ERROR_INT_CHANNEL_CONNECTIVITY_STATE, GRPC_CHANNEL_IDLE);
+  idle_transport_op_.on_consumed = &idle_transport_op_complete_callback_;
+  // Pass the transport op down to the channel stack.
+  grpc_channel_next_op(elem_, &idle_transport_op_);
+}
+
+class CallData {
+ public:
+  static grpc_error* Init(grpc_call_element* elem,
+                          const grpc_call_element_args* args);
+  static void Destroy(grpc_call_element* elem,
+                      const grpc_call_final_info* final_info,
+                      grpc_closure* then_schedule_closure);
+};
+
+grpc_error* CallData::Init(grpc_call_element* elem,
+                           const grpc_call_element_args* /*args*/) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->IncreaseCallCount();
+  return GRPC_ERROR_NONE;
+}
+
+void CallData::Destroy(grpc_call_element* elem,
+                       const grpc_call_final_info* /*final_info*/,
+                       grpc_closure* /*ignored*/) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->DecreaseCallCount();
+}
+
+const grpc_channel_filter grpc_client_idle_filter = {
+    grpc_call_next_op,
+    ChannelData::StartTransportOp,
+    sizeof(CallData),
+    CallData::Init,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    CallData::Destroy,
+    sizeof(ChannelData),
+    ChannelData::Init,
+    ChannelData::Destroy,
+    grpc_channel_next_get_info,
+    "client_idle"};
+
+static bool MaybeAddClientIdleFilter(grpc_channel_stack_builder* builder,
+                                     void* /*arg*/) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  if (!grpc_channel_args_want_minimal_stack(channel_args) &&
+      GetClientIdleTimeout(channel_args) != INT_MAX) {
+    return grpc_channel_stack_builder_prepend_filter(
+        builder, &grpc_client_idle_filter, nullptr, nullptr);
+  } else {
+    return true;
+  }
+}
+
+}  // namespace
+}  // namespace grpc_core
+
+void grpc_client_idle_filter_init(void) {
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      grpc_core::MaybeAddClientIdleFilter, nullptr);
+}
+
+void grpc_client_idle_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.cc
new file mode 100644
index 0000000..e4027b0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.cc	
@@ -0,0 +1,386 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/deadline/deadline_filter.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel_init.h"
+
+//
+// grpc_deadline_state
+//
+
+// The on_complete callback used when sending a cancel_error batch down the
+// filter stack.  Yields the call combiner when the batch returns.
+static void yield_call_combiner(void* arg, grpc_error* /*ignored*/) {
+  grpc_deadline_state* deadline_state = static_cast<grpc_deadline_state*>(arg);
+  GRPC_CALL_COMBINER_STOP(deadline_state->call_combiner,
+                          "got on_complete from cancel_stream batch");
+  GRPC_CALL_STACK_UNREF(deadline_state->call_stack, "deadline_timer");
+}
+
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
+static void send_cancel_op_in_call_combiner(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  grpc_transport_stream_op_batch* batch = grpc_make_transport_stream_op(
+      GRPC_CLOSURE_INIT(&deadline_state->timer_callback, yield_call_combiner,
+                        deadline_state, grpc_schedule_on_exec_ctx));
+  batch->cancel_stream = true;
+  batch->payload->cancel_stream.cancel_error = GRPC_ERROR_REF(error);
+  elem->filter->start_transport_stream_op_batch(elem, batch);
+}
+
+// Timer callback.
+static void timer_callback(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  if (error != GRPC_ERROR_CANCELLED) {
+    error = grpc_error_set_int(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Deadline Exceeded"),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_DEADLINE_EXCEEDED);
+    deadline_state->call_combiner->Cancel(GRPC_ERROR_REF(error));
+    GRPC_CLOSURE_INIT(&deadline_state->timer_callback,
+                      send_cancel_op_in_call_combiner, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CALL_COMBINER_START(deadline_state->call_combiner,
+                             &deadline_state->timer_callback, error,
+                             "deadline exceeded -- sending cancel_stream op");
+  } else {
+    GRPC_CALL_STACK_UNREF(deadline_state->call_stack, "deadline_timer");
+  }
+}
+
+// Starts the deadline timer.
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
+static void start_timer_if_needed(grpc_call_element* elem,
+                                  grpc_millis deadline) {
+  if (deadline == GRPC_MILLIS_INF_FUTURE) {
+    return;
+  }
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  grpc_closure* closure = nullptr;
+  switch (deadline_state->timer_state) {
+    case GRPC_DEADLINE_STATE_PENDING:
+      // Note: We do not start the timer if there is already a timer
+      return;
+    case GRPC_DEADLINE_STATE_FINISHED:
+      deadline_state->timer_state = GRPC_DEADLINE_STATE_PENDING;
+      // If we've already created and destroyed a timer, we always create a
+      // new closure: we have no other guarantee that the inlined closure is
+      // not in use (it may hold a pending call to timer_callback)
+      closure =
+          GRPC_CLOSURE_CREATE(timer_callback, elem, grpc_schedule_on_exec_ctx);
+      break;
+    case GRPC_DEADLINE_STATE_INITIAL:
+      deadline_state->timer_state = GRPC_DEADLINE_STATE_PENDING;
+      closure =
+          GRPC_CLOSURE_INIT(&deadline_state->timer_callback, timer_callback,
+                            elem, grpc_schedule_on_exec_ctx);
+      break;
+  }
+  GPR_ASSERT(closure != nullptr);
+  GRPC_CALL_STACK_REF(deadline_state->call_stack, "deadline_timer");
+  grpc_timer_init(&deadline_state->timer, deadline, closure);
+}
+
+// Cancels the deadline timer.
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
+static void cancel_timer_if_needed(grpc_deadline_state* deadline_state) {
+  if (deadline_state->timer_state == GRPC_DEADLINE_STATE_PENDING) {
+    deadline_state->timer_state = GRPC_DEADLINE_STATE_FINISHED;
+    grpc_timer_cancel(&deadline_state->timer);
+  } else {
+    // timer was either in STATE_INITIAL (nothing to cancel)
+    // OR in STATE_FINISHED (again nothing to cancel)
+  }
+}
+
+// Callback run when we receive trailing metadata.
+static void recv_trailing_metadata_ready(void* arg, grpc_error* error) {
+  grpc_deadline_state* deadline_state = static_cast<grpc_deadline_state*>(arg);
+  cancel_timer_if_needed(deadline_state);
+  // Invoke the original callback.
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          deadline_state->original_recv_trailing_metadata_ready,
+                          GRPC_ERROR_REF(error));
+}
+
+// Inject our own recv_trailing_metadata_ready callback into op.
+static void inject_recv_trailing_metadata_ready(
+    grpc_deadline_state* deadline_state, grpc_transport_stream_op_batch* op) {
+  deadline_state->original_recv_trailing_metadata_ready =
+      op->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+  GRPC_CLOSURE_INIT(&deadline_state->recv_trailing_metadata_ready,
+                    recv_trailing_metadata_ready, deadline_state,
+                    grpc_schedule_on_exec_ctx);
+  op->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+      &deadline_state->recv_trailing_metadata_ready;
+}
+
+// Callback and associated state for starting the timer after call stack
+// initialization has been completed.
+struct start_timer_after_init_state {
+  start_timer_after_init_state(grpc_call_element* elem, grpc_millis deadline)
+      : elem(elem), deadline(deadline) {}
+  ~start_timer_after_init_state() { start_timer_if_needed(elem, deadline); }
+
+  bool in_call_combiner = false;
+  grpc_call_element* elem;
+  grpc_millis deadline;
+  grpc_closure closure;
+};
+static void start_timer_after_init(void* arg, grpc_error* error) {
+  struct start_timer_after_init_state* state =
+      static_cast<struct start_timer_after_init_state*>(arg);
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(state->elem->call_data);
+  if (!state->in_call_combiner) {
+    // We are initially called without holding the call combiner, so we
+    // need to bounce ourselves into it.
+    state->in_call_combiner = true;
+    GRPC_CALL_COMBINER_START(deadline_state->call_combiner, &state->closure,
+                             GRPC_ERROR_REF(error),
+                             "scheduling deadline timer");
+    return;
+  }
+  delete state;
+  GRPC_CALL_COMBINER_STOP(deadline_state->call_combiner,
+                          "done scheduling deadline timer");
+}
+
+grpc_deadline_state::grpc_deadline_state(grpc_call_element* elem,
+                                         grpc_call_stack* call_stack,
+                                         grpc_core::CallCombiner* call_combiner,
+                                         grpc_millis deadline)
+    : call_stack(call_stack), call_combiner(call_combiner) {
+  // Deadline will always be infinite on servers, so the timer will only be
+  // set on clients with a finite deadline.
+  if (deadline != GRPC_MILLIS_INF_FUTURE) {
+    // When the deadline passes, we indicate the failure by sending down
+    // an op with cancel_error set.  However, we can't send down any ops
+    // until after the call stack is fully initialized.  If we start the
+    // timer here, we have no guarantee that the timer won't pop before
+    // call stack initialization is finished.  To avoid that problem, we
+    // create a closure to start the timer, and we schedule that closure
+    // to be run after call stack initialization is done.
+    struct start_timer_after_init_state* state =
+        new start_timer_after_init_state(elem, deadline);
+    GRPC_CLOSURE_INIT(&state->closure, start_timer_after_init, state,
+                      grpc_schedule_on_exec_ctx);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &state->closure, GRPC_ERROR_NONE);
+  }
+}
+
+grpc_deadline_state::~grpc_deadline_state() { cancel_timer_if_needed(this); }
+
+void grpc_deadline_state_reset(grpc_call_element* elem,
+                               grpc_millis new_deadline) {
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  cancel_timer_if_needed(deadline_state);
+  start_timer_if_needed(elem, new_deadline);
+}
+
+void grpc_deadline_state_client_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  if (op->cancel_stream) {
+    cancel_timer_if_needed(deadline_state);
+  } else {
+    // Make sure we know when the call is complete, so that we can cancel
+    // the timer.
+    if (op->recv_trailing_metadata) {
+      inject_recv_trailing_metadata_ready(deadline_state, op);
+    }
+  }
+}
+
+//
+// filter code
+//
+
+// Constructor for channel_data.  Used for both client and server filters.
+static grpc_error* deadline_init_channel_elem(grpc_channel_element* /*elem*/,
+                                              grpc_channel_element_args* args) {
+  GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for channel_data.  Used for both client and server filters.
+static void deadline_destroy_channel_elem(grpc_channel_element* /*elem*/) {}
+
+// Call data used for both client and server filter.
+typedef struct base_call_data {
+  grpc_deadline_state deadline_state;
+} base_call_data;
+
+// Additional call data used only for the server filter.
+typedef struct server_call_data {
+  base_call_data base;  // Must be first.
+  // The closure for receiving initial metadata.
+  grpc_closure recv_initial_metadata_ready;
+  // Received initial metadata batch.
+  grpc_metadata_batch* recv_initial_metadata;
+  // The original recv_initial_metadata_ready closure, which we chain to
+  // after our own closure is invoked.
+  grpc_closure* next_recv_initial_metadata_ready;
+} server_call_data;
+
+// Constructor for call_data.  Used for both client and server filters.
+static grpc_error* deadline_init_call_elem(grpc_call_element* elem,
+                                           const grpc_call_element_args* args) {
+  new (elem->call_data) grpc_deadline_state(
+      elem, args->call_stack, args->call_combiner, args->deadline);
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for call_data.  Used for both client and server filters.
+static void deadline_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  grpc_deadline_state* deadline_state =
+      static_cast<grpc_deadline_state*>(elem->call_data);
+  deadline_state->~grpc_deadline_state();
+}
+
+// Method for starting a call op for client filter.
+static void deadline_client_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  grpc_deadline_state_client_start_transport_stream_op_batch(elem, op);
+  // Chain to next filter.
+  grpc_call_next_op(elem, op);
+}
+
+// Callback for receiving initial metadata on the server.
+static void recv_initial_metadata_ready(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  server_call_data* calld = static_cast<server_call_data*>(elem->call_data);
+  start_timer_if_needed(elem, calld->recv_initial_metadata->deadline);
+  // Invoke the next callback.
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->next_recv_initial_metadata_ready,
+                          GRPC_ERROR_REF(error));
+}
+
+// Method for starting a call op for server filter.
+static void deadline_server_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  server_call_data* calld = static_cast<server_call_data*>(elem->call_data);
+  if (op->cancel_stream) {
+    cancel_timer_if_needed(&calld->base.deadline_state);
+  } else {
+    // If we're receiving initial metadata, we need to get the deadline
+    // from the recv_initial_metadata_ready callback.  So we inject our
+    // own callback into that hook.
+    if (op->recv_initial_metadata) {
+      calld->next_recv_initial_metadata_ready =
+          op->payload->recv_initial_metadata.recv_initial_metadata_ready;
+      calld->recv_initial_metadata =
+          op->payload->recv_initial_metadata.recv_initial_metadata;
+      GRPC_CLOSURE_INIT(&calld->recv_initial_metadata_ready,
+                        recv_initial_metadata_ready, elem,
+                        grpc_schedule_on_exec_ctx);
+      op->payload->recv_initial_metadata.recv_initial_metadata_ready =
+          &calld->recv_initial_metadata_ready;
+    }
+    // Make sure we know when the call is complete, so that we can cancel
+    // the timer.
+    // Note that we trigger this on recv_trailing_metadata, even though
+    // the client never sends trailing metadata, because this is the
+    // hook that tells us when the call is complete on the server side.
+    if (op->recv_trailing_metadata) {
+      inject_recv_trailing_metadata_ready(&calld->base.deadline_state, op);
+    }
+  }
+  // Chain to next filter.
+  grpc_call_next_op(elem, op);
+}
+
+const grpc_channel_filter grpc_client_deadline_filter = {
+    deadline_client_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(base_call_data),
+    deadline_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    deadline_destroy_call_elem,
+    0,  // sizeof(channel_data)
+    deadline_init_channel_elem,
+    deadline_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "deadline",
+};
+
+const grpc_channel_filter grpc_server_deadline_filter = {
+    deadline_server_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(server_call_data),
+    deadline_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    deadline_destroy_call_elem,
+    0,  // sizeof(channel_data)
+    deadline_init_channel_elem,
+    deadline_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "deadline",
+};
+
+bool grpc_deadline_checking_enabled(const grpc_channel_args* channel_args) {
+  return grpc_channel_arg_get_bool(
+      grpc_channel_args_find(channel_args, GRPC_ARG_ENABLE_DEADLINE_CHECKS),
+      !grpc_channel_args_want_minimal_stack(channel_args));
+}
+
+static bool maybe_add_deadline_filter(grpc_channel_stack_builder* builder,
+                                      void* arg) {
+  return grpc_deadline_checking_enabled(
+             grpc_channel_stack_builder_get_channel_arguments(builder))
+             ? grpc_channel_stack_builder_prepend_filter(
+                   builder, static_cast<const grpc_channel_filter*>(arg),
+                   nullptr, nullptr)
+             : true;
+}
+
+void grpc_deadline_filter_init(void) {
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_DIRECT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_deadline_filter, (void*)&grpc_client_deadline_filter);
+  grpc_channel_init_register_stage(
+      GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_deadline_filter, (void*)&grpc_server_deadline_filter);
+}
+
+void grpc_deadline_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.h
new file mode 100644
index 0000000..7c4e9aa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/deadline/deadline_filter.h	
@@ -0,0 +1,90 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/iomgr/timer.h"
+
+enum grpc_deadline_timer_state {
+  GRPC_DEADLINE_STATE_INITIAL,
+  GRPC_DEADLINE_STATE_PENDING,
+  GRPC_DEADLINE_STATE_FINISHED
+};
+
+// State used for filters that enforce call deadlines.
+// Must be the first field in the filter's call_data.
+struct grpc_deadline_state {
+  grpc_deadline_state(grpc_call_element* elem, grpc_call_stack* call_stack,
+                      grpc_core::CallCombiner* call_combiner,
+                      grpc_millis deadline);
+  ~grpc_deadline_state();
+
+  // We take a reference to the call stack for the timer callback.
+  grpc_call_stack* call_stack;
+  grpc_core::CallCombiner* call_combiner;
+  grpc_deadline_timer_state timer_state = GRPC_DEADLINE_STATE_INITIAL;
+  grpc_timer timer;
+  grpc_closure timer_callback;
+  // Closure to invoke when we receive trailing metadata.
+  // We use this to cancel the timer.
+  grpc_closure recv_trailing_metadata_ready;
+  // The original recv_trailing_metadata_ready closure, which we chain to
+  // after our own closure is invoked.
+  grpc_closure* original_recv_trailing_metadata_ready;
+};
+
+//
+// NOTE: All of these functions require that the first field in
+// elem->call_data is a grpc_deadline_state.
+//
+
+// Cancels the existing timer and starts a new one with new_deadline.
+//
+// Note: It is generally safe to call this with an earlier deadline
+// value than the current one, but not the reverse.  No checks are done
+// to ensure that the timer callback is not invoked while it is in the
+// process of being reset, which means that attempting to increase the
+// deadline may result in the timer being called twice.
+//
+// Note: Must be called while holding the call combiner.
+void grpc_deadline_state_reset(grpc_call_element* elem,
+                               grpc_millis new_deadline);
+
+// To be called from the client-side filter's start_transport_stream_op_batch()
+// method.  Ensures that the deadline timer is cancelled when the call
+// is completed.
+//
+// Note: It is the caller's responsibility to chain to the next filter if
+// necessary after this function returns.
+//
+// Note: Must be called while holding the call combiner.
+void grpc_deadline_state_client_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op);
+
+// Should deadline checking be performed (according to channel args)
+bool grpc_deadline_checking_enabled(const grpc_channel_args* args);
+
+// Deadline filters for direct client channels and server channels.
+// Note: Deadlines for non-direct client channels are handled by the
+// client_channel filter.
+extern const grpc_channel_filter grpc_client_deadline_filter;
+extern const grpc_channel_filter grpc_server_deadline_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_DEADLINE_DEADLINE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.cc
new file mode 100644
index 0000000..b1956c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.cc	
@@ -0,0 +1,601 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <stdint.h>
+#include <string.h>
+#include "src/core/ext/filters/http/client/http_client_filter.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/b64.h"
+#include "src/core/lib/slice/percent_encoding.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+#define EXPECTED_CONTENT_TYPE "application/grpc"
+#define EXPECTED_CONTENT_TYPE_LENGTH sizeof(EXPECTED_CONTENT_TYPE) - 1
+
+/* default maximum size of payload eligible for GET request */
+static constexpr size_t kMaxPayloadSizeForGet = 2048;
+
+static void recv_initial_metadata_ready(void* user_data, grpc_error* error);
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* error);
+static void on_send_message_next_done(void* arg, grpc_error* error);
+static void send_message_on_complete(void* arg, grpc_error* error);
+
+namespace {
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : call_combiner(args.call_combiner) {
+    GRPC_CLOSURE_INIT(&recv_initial_metadata_ready,
+                      ::recv_initial_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready,
+                      ::recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&on_send_message_next_done, ::on_send_message_next_done,
+                      elem, grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&send_message_on_complete, ::send_message_on_complete,
+                      elem, grpc_schedule_on_exec_ctx);
+  }
+
+  ~call_data() { GRPC_ERROR_UNREF(recv_initial_metadata_error); }
+
+  grpc_core::CallCombiner* call_combiner;
+  // State for handling send_initial_metadata ops.
+  grpc_linked_mdelem method;
+  grpc_linked_mdelem scheme;
+  grpc_linked_mdelem authority;
+  grpc_linked_mdelem te_trailers;
+  grpc_linked_mdelem content_type;
+  grpc_linked_mdelem user_agent;
+  // State for handling recv_initial_metadata ops.
+  grpc_metadata_batch* recv_initial_metadata;
+  grpc_error* recv_initial_metadata_error = GRPC_ERROR_NONE;
+  grpc_closure* original_recv_initial_metadata_ready = nullptr;
+  grpc_closure recv_initial_metadata_ready;
+  // State for handling recv_trailing_metadata ops.
+  grpc_metadata_batch* recv_trailing_metadata;
+  grpc_closure* original_recv_trailing_metadata_ready;
+  grpc_closure recv_trailing_metadata_ready;
+  grpc_error* recv_trailing_metadata_error = GRPC_ERROR_NONE;
+  bool seen_recv_trailing_metadata_ready = false;
+  // State for handling send_message ops.
+  grpc_transport_stream_op_batch* send_message_batch;
+  size_t send_message_bytes_read = 0;
+  grpc_core::ManualConstructor<grpc_core::ByteStreamCache> send_message_cache;
+  grpc_core::ManualConstructor<grpc_core::ByteStreamCache::CachingByteStream>
+      send_message_caching_stream;
+  grpc_closure on_send_message_next_done;
+  grpc_closure* original_send_message_on_complete;
+  grpc_closure send_message_on_complete;
+};
+
+struct channel_data {
+  grpc_mdelem static_scheme;
+  grpc_mdelem user_agent;
+  size_t max_payload_size_for_get;
+};
+}  // namespace
+
+static grpc_error* client_filter_incoming_metadata(grpc_metadata_batch* b) {
+  if (b->idx.named.status != nullptr) {
+    /* If both gRPC status and HTTP status are provided in the response, we
+     * should prefer the gRPC status code, as mentioned in
+     * https://github.com/grpc/grpc/blob/master/doc/http-grpc-status-mapping.md.
+     */
+    if (b->idx.named.grpc_status != nullptr ||
+        grpc_mdelem_static_value_eq(b->idx.named.status->md,
+                                    GRPC_MDELEM_STATUS_200)) {
+      grpc_metadata_batch_remove(b, GRPC_BATCH_STATUS);
+    } else {
+      char* val = grpc_dump_slice(GRPC_MDVALUE(b->idx.named.status->md),
+                                  GPR_DUMP_ASCII);
+      char* msg;
+      gpr_asprintf(&msg, "Received http2 header with status: %s", val);
+      grpc_error* e = grpc_error_set_str(
+          grpc_error_set_int(
+              grpc_error_set_str(
+                  GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                      "Received http2 :status header with non-200 OK status"),
+                  GRPC_ERROR_STR_VALUE, grpc_slice_from_copied_string(val)),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_CANCELLED),
+          GRPC_ERROR_STR_GRPC_MESSAGE, grpc_slice_from_copied_string(msg));
+      gpr_free(val);
+      gpr_free(msg);
+      return e;
+    }
+  }
+
+  if (b->idx.named.grpc_message != nullptr) {
+    grpc_slice pct_decoded_msg = grpc_permissive_percent_decode_slice(
+        GRPC_MDVALUE(b->idx.named.grpc_message->md));
+    if (grpc_slice_is_equivalent(pct_decoded_msg,
+                                 GRPC_MDVALUE(b->idx.named.grpc_message->md))) {
+      grpc_slice_unref_internal(pct_decoded_msg);
+    } else {
+      grpc_metadata_batch_set_value(b->idx.named.grpc_message, pct_decoded_msg);
+    }
+  }
+
+  if (b->idx.named.content_type != nullptr) {
+    if (!grpc_mdelem_static_value_eq(
+            b->idx.named.content_type->md,
+            GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC)) {
+      if (grpc_slice_buf_start_eq(GRPC_MDVALUE(b->idx.named.content_type->md),
+                                  EXPECTED_CONTENT_TYPE,
+                                  EXPECTED_CONTENT_TYPE_LENGTH) &&
+          (GRPC_SLICE_START_PTR(GRPC_MDVALUE(
+               b->idx.named.content_type->md))[EXPECTED_CONTENT_TYPE_LENGTH] ==
+               '+' ||
+           GRPC_SLICE_START_PTR(GRPC_MDVALUE(
+               b->idx.named.content_type->md))[EXPECTED_CONTENT_TYPE_LENGTH] ==
+               ';')) {
+        /* Although the C implementation doesn't (currently) generate them,
+           any custom +-suffix is explicitly valid. */
+        /* TODO(klempner): We should consider preallocating common values such
+           as +proto or +json, or at least stashing them if we see them. */
+        /* TODO(klempner): Should we be surfacing this to application code? */
+      } else {
+        /* TODO(klempner): We're currently allowing this, but we shouldn't
+           see it without a proxy so log for now. */
+        char* val = grpc_dump_slice(GRPC_MDVALUE(b->idx.named.content_type->md),
+                                    GPR_DUMP_ASCII);
+        gpr_log(GPR_INFO, "Unexpected content-type '%s'", val);
+        gpr_free(val);
+      }
+    }
+    grpc_metadata_batch_remove(b, GRPC_BATCH_CONTENT_TYPE);
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+static void recv_initial_metadata_ready(void* user_data, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error == GRPC_ERROR_NONE) {
+    error = client_filter_incoming_metadata(calld->recv_initial_metadata);
+    calld->recv_initial_metadata_error = GRPC_ERROR_REF(error);
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  grpc_closure* closure = calld->original_recv_initial_metadata_ready;
+  calld->original_recv_initial_metadata_ready = nullptr;
+  if (calld->seen_recv_trailing_metadata_ready) {
+    GRPC_CALL_COMBINER_START(
+        calld->call_combiner, &calld->recv_trailing_metadata_ready,
+        calld->recv_trailing_metadata_error, "continue recv_trailing_metadata");
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, closure, error);
+}
+
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->original_recv_initial_metadata_ready != nullptr) {
+    calld->recv_trailing_metadata_error = GRPC_ERROR_REF(error);
+    calld->seen_recv_trailing_metadata_ready = true;
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner,
+                            "deferring recv_trailing_metadata_ready until "
+                            "after recv_initial_metadata_ready");
+    return;
+  }
+  if (error == GRPC_ERROR_NONE) {
+    error = client_filter_incoming_metadata(calld->recv_trailing_metadata);
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  error = grpc_error_add_child(
+      error, GRPC_ERROR_REF(calld->recv_initial_metadata_error));
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_trailing_metadata_ready, error);
+}
+
+static void send_message_on_complete(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->send_message_cache.Destroy();
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_send_message_on_complete,
+                          GRPC_ERROR_REF(error));
+}
+
+// Pulls a slice from the send_message byte stream, updating
+// calld->send_message_bytes_read.
+static grpc_error* pull_slice_from_send_message(call_data* calld) {
+  grpc_slice incoming_slice;
+  grpc_error* error = calld->send_message_caching_stream->Pull(&incoming_slice);
+  if (error == GRPC_ERROR_NONE) {
+    calld->send_message_bytes_read += GRPC_SLICE_LENGTH(incoming_slice);
+    grpc_slice_unref_internal(incoming_slice);
+  }
+  return error;
+}
+
+// Reads as many slices as possible from the send_message byte stream.
+// Upon successful return, if calld->send_message_bytes_read ==
+// calld->send_message_caching_stream->length(), then we have completed
+// reading from the byte stream; otherwise, an async read has been dispatched
+// and on_send_message_next_done() will be invoked when it is complete.
+static grpc_error* read_all_available_send_message_data(call_data* calld) {
+  while (calld->send_message_caching_stream->Next(
+      SIZE_MAX, &calld->on_send_message_next_done)) {
+    grpc_error* error = pull_slice_from_send_message(calld);
+    if (error != GRPC_ERROR_NONE) return error;
+    if (calld->send_message_bytes_read ==
+        calld->send_message_caching_stream->length()) {
+      break;
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+// Async callback for ByteStream::Next().
+static void on_send_message_next_done(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        calld->send_message_batch, error, calld->call_combiner);
+    return;
+  }
+  error = pull_slice_from_send_message(calld);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        calld->send_message_batch, error, calld->call_combiner);
+    return;
+  }
+  // There may or may not be more to read, but we don't care.  If we got
+  // here, then we know that all of the data was not available
+  // synchronously, so we were not able to do a cached call.  Instead,
+  // we just reset the byte stream and then send down the batch as-is.
+  calld->send_message_caching_stream->Reset();
+  grpc_call_next_op(elem, calld->send_message_batch);
+}
+
+static char* slice_buffer_to_string(grpc_slice_buffer* slice_buffer) {
+  char* payload_bytes =
+      static_cast<char*>(gpr_malloc(slice_buffer->length + 1));
+  size_t offset = 0;
+  for (size_t i = 0; i < slice_buffer->count; ++i) {
+    memcpy(payload_bytes + offset,
+           GRPC_SLICE_START_PTR(slice_buffer->slices[i]),
+           GRPC_SLICE_LENGTH(slice_buffer->slices[i]));
+    offset += GRPC_SLICE_LENGTH(slice_buffer->slices[i]);
+  }
+  *(payload_bytes + offset) = '\0';
+  return payload_bytes;
+}
+
+// Modifies the path entry in the batch's send_initial_metadata to
+// append the base64-encoded query for a GET request.
+static grpc_error* update_path_for_get(grpc_call_element* elem,
+                                       grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_slice path_slice =
+      GRPC_MDVALUE(batch->payload->send_initial_metadata.send_initial_metadata
+                       ->idx.named.path->md);
+  /* sum up individual component's lengths and allocate enough memory to
+   * hold combined path+query */
+  size_t estimated_len = GRPC_SLICE_LENGTH(path_slice);
+  estimated_len++; /* for the '?' */
+  estimated_len += grpc_base64_estimate_encoded_size(
+      batch->payload->send_message.send_message->length(),
+      false /* multi_line */);
+  grpc_core::UnmanagedMemorySlice path_with_query_slice(estimated_len);
+  /* memcopy individual pieces into this slice */
+  char* write_ptr =
+      reinterpret_cast<char*> GRPC_SLICE_START_PTR(path_with_query_slice);
+  char* original_path =
+      reinterpret_cast<char*> GRPC_SLICE_START_PTR(path_slice);
+  memcpy(write_ptr, original_path, GRPC_SLICE_LENGTH(path_slice));
+  write_ptr += GRPC_SLICE_LENGTH(path_slice);
+  *write_ptr++ = '?';
+  char* payload_bytes =
+      slice_buffer_to_string(calld->send_message_cache->cache_buffer());
+  grpc_base64_encode_core(write_ptr, payload_bytes,
+                          batch->payload->send_message.send_message->length(),
+                          true /* url_safe */, false /* multi_line */);
+  gpr_free(payload_bytes);
+  /* remove trailing unused memory and add trailing 0 to terminate string */
+  char* t = reinterpret_cast<char*> GRPC_SLICE_START_PTR(path_with_query_slice);
+  /* safe to use strlen since base64_encode will always add '\0' */
+  path_with_query_slice =
+      grpc_slice_sub_no_ref(path_with_query_slice, 0, strlen(t));
+  /* substitute previous path with the new path+query */
+  grpc_mdelem mdelem_path_and_query =
+      grpc_mdelem_from_slices(GRPC_MDSTR_PATH, path_with_query_slice);
+  grpc_metadata_batch* b =
+      batch->payload->send_initial_metadata.send_initial_metadata;
+  return grpc_metadata_batch_substitute(b, b->idx.named.path,
+                                        mdelem_path_and_query);
+}
+
+static void remove_if_present(grpc_metadata_batch* batch,
+                              grpc_metadata_batch_callouts_index idx) {
+  if (batch->idx.array[idx] != nullptr) {
+    grpc_metadata_batch_remove(batch, idx);
+  }
+}
+
+static void http_client_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* channeld = static_cast<channel_data*>(elem->channel_data);
+  GPR_TIMER_SCOPE("http_client_start_transport_stream_op_batch", 0);
+
+  if (batch->recv_initial_metadata) {
+    /* substitute our callback for the higher callback */
+    calld->recv_initial_metadata =
+        batch->payload->recv_initial_metadata.recv_initial_metadata;
+    calld->original_recv_initial_metadata_ready =
+        batch->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    batch->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->recv_initial_metadata_ready;
+  }
+
+  if (batch->recv_trailing_metadata) {
+    /* substitute our callback for the higher callback */
+    calld->recv_trailing_metadata =
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata;
+    calld->original_recv_trailing_metadata_ready =
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &calld->recv_trailing_metadata_ready;
+  }
+
+  grpc_error* error = GRPC_ERROR_NONE;
+  bool batch_will_be_handled_asynchronously = false;
+  if (batch->send_initial_metadata) {
+    // Decide which HTTP VERB to use. We use GET if the request is marked
+    // cacheable, and the operation contains both initial metadata and send
+    // message, and the payload is below the size threshold, and all the data
+    // for this request is immediately available.
+    grpc_mdelem method = GRPC_MDELEM_METHOD_POST;
+    if (batch->send_message &&
+        (batch->payload->send_initial_metadata.send_initial_metadata_flags &
+         GRPC_INITIAL_METADATA_CACHEABLE_REQUEST) &&
+        batch->payload->send_message.send_message->length() <
+            channeld->max_payload_size_for_get) {
+      calld->send_message_bytes_read = 0;
+      calld->send_message_cache.Init(
+          std::move(batch->payload->send_message.send_message));
+      calld->send_message_caching_stream.Init(calld->send_message_cache.get());
+      batch->payload->send_message.send_message.reset(
+          calld->send_message_caching_stream.get());
+      calld->original_send_message_on_complete = batch->on_complete;
+      batch->on_complete = &calld->send_message_on_complete;
+      calld->send_message_batch = batch;
+      error = read_all_available_send_message_data(calld);
+      if (error != GRPC_ERROR_NONE) goto done;
+      // If all the data has been read, then we can use GET.
+      if (calld->send_message_bytes_read ==
+          calld->send_message_caching_stream->length()) {
+        method = GRPC_MDELEM_METHOD_GET;
+        error = update_path_for_get(elem, batch);
+        if (error != GRPC_ERROR_NONE) goto done;
+        batch->send_message = false;
+        calld->send_message_caching_stream->Orphan();
+      } else {
+        // Not all data is available.  The batch will be sent down
+        // asynchronously in on_send_message_next_done().
+        batch_will_be_handled_asynchronously = true;
+        // Fall back to POST.
+        gpr_log(GPR_DEBUG,
+                "Request is marked Cacheable but not all data is available.  "
+                "Falling back to POST");
+      }
+    } else if (batch->payload->send_initial_metadata
+                   .send_initial_metadata_flags &
+               GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST) {
+      method = GRPC_MDELEM_METHOD_PUT;
+    }
+
+    remove_if_present(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        GRPC_BATCH_METHOD);
+    remove_if_present(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        GRPC_BATCH_SCHEME);
+    remove_if_present(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        GRPC_BATCH_TE);
+    remove_if_present(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        GRPC_BATCH_CONTENT_TYPE);
+    remove_if_present(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        GRPC_BATCH_USER_AGENT);
+
+    /* Send : prefixed headers, which have to be before any application
+       layer headers. */
+    error = grpc_metadata_batch_add_head(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        &calld->method, method, GRPC_BATCH_METHOD);
+    if (error != GRPC_ERROR_NONE) goto done;
+    error = grpc_metadata_batch_add_head(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        &calld->scheme, channeld->static_scheme, GRPC_BATCH_SCHEME);
+    if (error != GRPC_ERROR_NONE) goto done;
+    error = grpc_metadata_batch_add_tail(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        &calld->te_trailers, GRPC_MDELEM_TE_TRAILERS, GRPC_BATCH_TE);
+    if (error != GRPC_ERROR_NONE) goto done;
+    error = grpc_metadata_batch_add_tail(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        &calld->content_type, GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC,
+        GRPC_BATCH_CONTENT_TYPE);
+    if (error != GRPC_ERROR_NONE) goto done;
+    error = grpc_metadata_batch_add_tail(
+        batch->payload->send_initial_metadata.send_initial_metadata,
+        &calld->user_agent, GRPC_MDELEM_REF(channeld->user_agent),
+        GRPC_BATCH_USER_AGENT);
+    if (error != GRPC_ERROR_NONE) goto done;
+  }
+
+done:
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        calld->send_message_batch, error, calld->call_combiner);
+  } else if (!batch_will_be_handled_asynchronously) {
+    grpc_call_next_op(elem, batch);
+  }
+}
+
+/* Constructor for call_data */
+static grpc_error* http_client_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data */
+static void http_client_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->~call_data();
+}
+
+static grpc_mdelem scheme_from_args(const grpc_channel_args* args) {
+  unsigned i;
+  size_t j;
+  grpc_mdelem valid_schemes[] = {GRPC_MDELEM_SCHEME_HTTP,
+                                 GRPC_MDELEM_SCHEME_HTTPS};
+  if (args != nullptr) {
+    for (i = 0; i < args->num_args; ++i) {
+      if (args->args[i].type == GRPC_ARG_STRING &&
+          strcmp(args->args[i].key, GRPC_ARG_HTTP2_SCHEME) == 0) {
+        for (j = 0; j < GPR_ARRAY_SIZE(valid_schemes); j++) {
+          if (0 == grpc_slice_str_cmp(GRPC_MDVALUE(valid_schemes[j]),
+                                      args->args[i].value.string)) {
+            return valid_schemes[j];
+          }
+        }
+      }
+    }
+  }
+  return GRPC_MDELEM_SCHEME_HTTP;
+}
+
+static size_t max_payload_size_from_args(const grpc_channel_args* args) {
+  if (args != nullptr) {
+    for (size_t i = 0; i < args->num_args; ++i) {
+      if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_PAYLOAD_SIZE_FOR_GET)) {
+        if (args->args[i].type != GRPC_ARG_INTEGER) {
+          gpr_log(GPR_ERROR, "%s: must be an integer",
+                  GRPC_ARG_MAX_PAYLOAD_SIZE_FOR_GET);
+        } else {
+          return static_cast<size_t>(args->args[i].value.integer);
+        }
+      }
+    }
+  }
+  return kMaxPayloadSizeForGet;
+}
+
+static grpc_core::ManagedMemorySlice user_agent_from_args(
+    const grpc_channel_args* args, const char* transport_name) {
+  gpr_strvec v;
+  size_t i;
+  int is_first = 1;
+  char* tmp;
+
+  gpr_strvec_init(&v);
+
+  for (i = 0; args && i < args->num_args; i++) {
+    if (0 == strcmp(args->args[i].key, GRPC_ARG_PRIMARY_USER_AGENT_STRING)) {
+      if (args->args[i].type != GRPC_ARG_STRING) {
+        gpr_log(GPR_ERROR, "Channel argument '%s' should be a string",
+                GRPC_ARG_PRIMARY_USER_AGENT_STRING);
+      } else {
+        if (!is_first) gpr_strvec_add(&v, gpr_strdup(" "));
+        is_first = 0;
+        gpr_strvec_add(&v, gpr_strdup(args->args[i].value.string));
+      }
+    }
+  }
+
+  gpr_asprintf(&tmp, "%sgrpc-c/%s (%s; %s; %s)", is_first ? "" : " ",
+               grpc_version_string(), GPR_PLATFORM_STRING, transport_name,
+               grpc_g_stands_for());
+  is_first = 0;
+  gpr_strvec_add(&v, tmp);
+
+  for (i = 0; args && i < args->num_args; i++) {
+    if (0 == strcmp(args->args[i].key, GRPC_ARG_SECONDARY_USER_AGENT_STRING)) {
+      if (args->args[i].type != GRPC_ARG_STRING) {
+        gpr_log(GPR_ERROR, "Channel argument '%s' should be a string",
+                GRPC_ARG_SECONDARY_USER_AGENT_STRING);
+      } else {
+        if (!is_first) gpr_strvec_add(&v, gpr_strdup(" "));
+        is_first = 0;
+        gpr_strvec_add(&v, gpr_strdup(args->args[i].value.string));
+      }
+    }
+  }
+
+  tmp = gpr_strvec_flatten(&v, nullptr);
+  gpr_strvec_destroy(&v);
+  grpc_core::ManagedMemorySlice result(tmp);
+  gpr_free(tmp);
+
+  return result;
+}
+
+/* Constructor for channel_data */
+static grpc_error* http_client_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  GPR_ASSERT(!args->is_last);
+  GPR_ASSERT(args->optional_transport != nullptr);
+  chand->static_scheme = scheme_from_args(args->channel_args);
+  chand->max_payload_size_for_get =
+      max_payload_size_from_args(args->channel_args);
+  chand->user_agent = grpc_mdelem_from_slices(
+      GRPC_MDSTR_USER_AGENT,
+      user_agent_from_args(args->channel_args,
+                           args->optional_transport->vtable->name));
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+static void http_client_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  GRPC_MDELEM_UNREF(chand->user_agent);
+}
+
+const grpc_channel_filter grpc_http_client_filter = {
+    http_client_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    http_client_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    http_client_destroy_call_elem,
+    sizeof(channel_data),
+    http_client_init_channel_elem,
+    http_client_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "http-client"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.h
new file mode 100644
index 0000000..a2f16dd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client/http_client_filter.h	
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/* Processes metadata on the client side for HTTP2 transports */
+extern const grpc_channel_filter grpc_http_client_filter;
+
+/* Channel arg to determine maximum size of payload eligible for GET request */
+#define GRPC_ARG_MAX_PAYLOAD_SIZE_FOR_GET "grpc.max_payload_size_for_get"
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_HTTP_CLIENT_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.cc
new file mode 100644
index 0000000..fd71c2f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.cc	
@@ -0,0 +1,159 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/http/client_authority_filter.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+namespace {
+
+struct call_data {
+  grpc_linked_mdelem authority_storage;
+  grpc_core::CallCombiner* call_combiner;
+};
+
+struct channel_data {
+  grpc_core::ManagedMemorySlice default_authority;
+  grpc_mdelem default_authority_mdelem;
+};
+
+void client_authority_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // Handle send_initial_metadata.
+  auto* initial_metadata =
+      batch->payload->send_initial_metadata.send_initial_metadata;
+  // If the initial metadata doesn't already contain :authority, add it.
+  if (batch->send_initial_metadata &&
+      initial_metadata->idx.named.authority == nullptr) {
+    grpc_error* error = grpc_metadata_batch_add_head(
+        initial_metadata, &calld->authority_storage,
+        GRPC_MDELEM_REF(chand->default_authority_mdelem), GRPC_BATCH_AUTHORITY);
+    if (error != GRPC_ERROR_NONE) {
+      grpc_transport_stream_op_batch_finish_with_failure(batch, error,
+                                                         calld->call_combiner);
+      return;
+    }
+  }
+  // Pass control down the stack.
+  grpc_call_next_op(elem, batch);
+}
+
+/* Constructor for call_data */
+grpc_error* client_authority_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->call_combiner = args->call_combiner;
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data */
+void client_authority_destroy_call_elem(
+    grpc_call_element* /*elem*/, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {}
+
+/* Constructor for channel_data */
+grpc_error* client_authority_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  const grpc_arg* default_authority_arg =
+      grpc_channel_args_find(args->channel_args, GRPC_ARG_DEFAULT_AUTHORITY);
+  if (default_authority_arg == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "GRPC_ARG_DEFAULT_AUTHORITY channel arg. not found. Note that direct "
+        "channels must explicitly specify a value for this argument.");
+  }
+  const char* default_authority_str =
+      grpc_channel_arg_get_string(default_authority_arg);
+  if (default_authority_str == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "GRPC_ARG_DEFAULT_AUTHORITY channel arg. must be a string");
+  }
+  chand->default_authority =
+      grpc_core::ManagedMemorySlice(default_authority_str);
+  chand->default_authority_mdelem = grpc_mdelem_create(
+      GRPC_MDSTR_AUTHORITY, chand->default_authority, nullptr);
+  GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+void client_authority_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  grpc_slice_unref_internal(chand->default_authority);
+  GRPC_MDELEM_UNREF(chand->default_authority_mdelem);
+}
+}  // namespace
+
+const grpc_channel_filter grpc_client_authority_filter = {
+    client_authority_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    client_authority_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    client_authority_destroy_call_elem,
+    sizeof(channel_data),
+    client_authority_init_channel_elem,
+    client_authority_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "authority"};
+
+static bool add_client_authority_filter(grpc_channel_stack_builder* builder,
+                                        void* arg) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  const grpc_arg* disable_client_authority_filter_arg = grpc_channel_args_find(
+      channel_args, GRPC_ARG_DISABLE_CLIENT_AUTHORITY_FILTER);
+  if (disable_client_authority_filter_arg != nullptr) {
+    const bool is_client_authority_filter_disabled =
+        grpc_channel_arg_get_bool(disable_client_authority_filter_arg, false);
+    if (is_client_authority_filter_disabled) {
+      return true;
+    }
+  }
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, static_cast<const grpc_channel_filter*>(arg), nullptr, nullptr);
+}
+
+void grpc_client_authority_filter_init(void) {
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
+                                   add_client_authority_filter,
+                                   (void*)&grpc_client_authority_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   add_client_authority_filter,
+                                   (void*)&grpc_client_authority_filter);
+}
+
+void grpc_client_authority_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.h
new file mode 100644
index 0000000..5824e91
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/client_authority_filter.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/// Filter responsible for setting the authority header, if not already set. It
+/// uses the value of the GRPC_ARG_DEFAULT_AUTHORITY channel arg if the initial
+/// metadata doesn't already contain an authority value.
+
+extern const grpc_channel_filter grpc_client_authority_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_CLIENT_AUTHORITY_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/http_filters_plugin.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/http_filters_plugin.cc
new file mode 100644
index 0000000..f03fa01
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/http_filters_plugin.cc	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include "src/core/ext/filters/http/client/http_client_filter.h"
+#include "src/core/ext/filters/http/message_compress/message_compress_filter.h"
+#include "src/core/ext/filters/http/server/http_server_filter.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+typedef struct {
+  const grpc_channel_filter* filter;
+  const char* control_channel_arg;
+} optional_filter;
+
+static optional_filter compress_filter = {
+    &grpc_message_compress_filter, GRPC_ARG_ENABLE_PER_MESSAGE_COMPRESSION};
+
+static bool is_building_http_like_transport(
+    grpc_channel_stack_builder* builder) {
+  grpc_transport* t = grpc_channel_stack_builder_get_transport(builder);
+  return t != nullptr && strstr(t->vtable->name, "http");
+}
+
+static bool maybe_add_optional_filter(grpc_channel_stack_builder* builder,
+                                      void* arg) {
+  if (!is_building_http_like_transport(builder)) return true;
+  optional_filter* filtarg = static_cast<optional_filter*>(arg);
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  bool enable = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(channel_args, filtarg->control_channel_arg),
+      !grpc_channel_args_want_minimal_stack(channel_args));
+  return enable ? grpc_channel_stack_builder_prepend_filter(
+                      builder, filtarg->filter, nullptr, nullptr)
+                : true;
+}
+
+static bool maybe_add_required_filter(grpc_channel_stack_builder* builder,
+                                      void* arg) {
+  return is_building_http_like_transport(builder)
+             ? grpc_channel_stack_builder_prepend_filter(
+                   builder, static_cast<const grpc_channel_filter*>(arg),
+                   nullptr, nullptr)
+             : true;
+}
+
+void grpc_http_filters_init(void) {
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_optional_filter, &compress_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_optional_filter, &compress_filter);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_optional_filter, &compress_filter);
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_required_filter, (void*)&grpc_http_client_filter);
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_DIRECT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_required_filter, (void*)&grpc_http_client_filter);
+  grpc_channel_init_register_stage(
+      GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_required_filter, (void*)&grpc_http_server_filter);
+}
+
+void grpc_http_filters_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.cc
new file mode 100644
index 0000000..27f0333
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.cc	
@@ -0,0 +1,509 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/ext/filters/http/message_compress/message_compress_filter.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/compression/compression_args.h"
+#include "src/core/lib/compression/compression_internal.h"
+#include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+static void start_send_message_batch(void* arg, grpc_error* unused);
+static void send_message_on_complete(void* arg, grpc_error* error);
+static void on_send_message_next_done(void* arg, grpc_error* error);
+
+namespace {
+
+struct channel_data {
+  /** The default, channel-level, compression algorithm */
+  grpc_compression_algorithm default_compression_algorithm;
+  /** Bitset of enabled compression algorithms */
+  uint32_t enabled_compression_algorithms_bitset;
+  /** Bitset of enabled message compression algorithms */
+  uint32_t enabled_message_compression_algorithms_bitset;
+  /** Bitset of enabled stream compression algorithms */
+  uint32_t enabled_stream_compression_algorithms_bitset;
+};
+
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : call_combiner(args.call_combiner) {
+    channel_data* channeld = static_cast<channel_data*>(elem->channel_data);
+    // The call's message compression algorithm is set to channel's default
+    // setting. It can be overridden later by initial metadata.
+    if (GPR_LIKELY(GPR_BITGET(channeld->enabled_compression_algorithms_bitset,
+                              channeld->default_compression_algorithm))) {
+      message_compression_algorithm =
+          grpc_compression_algorithm_to_message_compression_algorithm(
+              channeld->default_compression_algorithm);
+    }
+    GRPC_CLOSURE_INIT(&start_send_message_batch_in_call_combiner,
+                      start_send_message_batch, elem,
+                      grpc_schedule_on_exec_ctx);
+  }
+
+  ~call_data() {
+    if (state_initialized) {
+      grpc_slice_buffer_destroy_internal(&slices);
+    }
+    GRPC_ERROR_UNREF(cancel_error);
+  }
+
+  grpc_core::CallCombiner* call_combiner;
+  grpc_message_compression_algorithm message_compression_algorithm =
+      GRPC_MESSAGE_COMPRESS_NONE;
+  grpc_error* cancel_error = GRPC_ERROR_NONE;
+  grpc_transport_stream_op_batch* send_message_batch = nullptr;
+  bool seen_initial_metadata = false;
+  /* Set to true, if the fields below are initialized. */
+  bool state_initialized = false;
+  grpc_closure start_send_message_batch_in_call_combiner;
+  /* The fields below are only initialized when we compress the payload.
+   * Keep them at the bottom of the struct, so they don't pollute the
+   * cache-lines. */
+  grpc_linked_mdelem message_compression_algorithm_storage;
+  grpc_linked_mdelem stream_compression_algorithm_storage;
+  grpc_linked_mdelem accept_encoding_storage;
+  grpc_linked_mdelem accept_stream_encoding_storage;
+  grpc_slice_buffer slices; /**< Buffers up input slices to be compressed */
+  grpc_core::ManualConstructor<grpc_core::SliceBufferByteStream>
+      replacement_stream;
+  grpc_closure* original_send_message_on_complete;
+  grpc_closure send_message_on_complete;
+  grpc_closure on_send_message_next_done;
+};
+
+}  // namespace
+
+// Returns true if we should skip message compression for the current message.
+static bool skip_message_compression(grpc_call_element* elem) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // If the flags of this message indicate that it shouldn't be compressed, we
+  // skip message compression.
+  uint32_t flags =
+      calld->send_message_batch->payload->send_message.send_message->flags();
+  if (flags & (GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_INTERNAL_COMPRESS)) {
+    return true;
+  }
+  // If this call doesn't have any message compression algorithm set, skip
+  // message compression.
+  return calld->message_compression_algorithm == GRPC_MESSAGE_COMPRESS_NONE;
+}
+
+// Determines the compression algorithm from the initial metadata and the
+// channel's default setting.
+static grpc_compression_algorithm find_compression_algorithm(
+    grpc_metadata_batch* initial_metadata, channel_data* channeld) {
+  if (initial_metadata->idx.named.grpc_internal_encoding_request == nullptr) {
+    return channeld->default_compression_algorithm;
+  }
+  grpc_compression_algorithm compression_algorithm;
+  // Parse the compression algorithm from the initial metadata.
+  grpc_mdelem md =
+      initial_metadata->idx.named.grpc_internal_encoding_request->md;
+  GPR_ASSERT(grpc_compression_algorithm_parse(GRPC_MDVALUE(md),
+                                              &compression_algorithm));
+  // Remove this metadata since it's an internal one (i.e., it won't be
+  // transmitted out).
+  grpc_metadata_batch_remove(initial_metadata,
+                             GRPC_BATCH_GRPC_INTERNAL_ENCODING_REQUEST);
+  // Check if that algorithm is enabled. Note that GRPC_COMPRESS_NONE is always
+  // enabled.
+  // TODO(juanlishen): Maybe use channel default or abort() if the algorithm
+  // from the initial metadata is disabled.
+  if (GPR_LIKELY(GPR_BITGET(channeld->enabled_compression_algorithms_bitset,
+                            compression_algorithm))) {
+    return compression_algorithm;
+  }
+  const char* algorithm_name;
+  GPR_ASSERT(
+      grpc_compression_algorithm_name(compression_algorithm, &algorithm_name));
+  gpr_log(GPR_ERROR,
+          "Invalid compression algorithm from initial metadata: '%s' "
+          "(previously disabled). "
+          "Will not compress.",
+          algorithm_name);
+  return GRPC_COMPRESS_NONE;
+}
+
+static void initialize_state(grpc_call_element* elem, call_data* calld) {
+  GPR_DEBUG_ASSERT(!calld->state_initialized);
+  calld->state_initialized = true;
+  grpc_slice_buffer_init(&calld->slices);
+  GRPC_CLOSURE_INIT(&calld->send_message_on_complete,
+                    ::send_message_on_complete, elem,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&calld->on_send_message_next_done,
+                    ::on_send_message_next_done, elem,
+                    grpc_schedule_on_exec_ctx);
+}
+
+static grpc_error* process_send_initial_metadata(
+    grpc_call_element* elem,
+    grpc_metadata_batch* initial_metadata) GRPC_MUST_USE_RESULT;
+static grpc_error* process_send_initial_metadata(
+    grpc_call_element* elem, grpc_metadata_batch* initial_metadata) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* channeld = static_cast<channel_data*>(elem->channel_data);
+  // Find the compression algorithm.
+  grpc_compression_algorithm compression_algorithm =
+      find_compression_algorithm(initial_metadata, channeld);
+  // Note that at most one of the following algorithms can be set.
+  calld->message_compression_algorithm =
+      grpc_compression_algorithm_to_message_compression_algorithm(
+          compression_algorithm);
+  grpc_stream_compression_algorithm stream_compression_algorithm =
+      grpc_compression_algorithm_to_stream_compression_algorithm(
+          compression_algorithm);
+  // Hint compression algorithm.
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (calld->message_compression_algorithm != GRPC_MESSAGE_COMPRESS_NONE) {
+    initialize_state(elem, calld);
+    error = grpc_metadata_batch_add_tail(
+        initial_metadata, &calld->message_compression_algorithm_storage,
+        grpc_message_compression_encoding_mdelem(
+            calld->message_compression_algorithm),
+        GRPC_BATCH_GRPC_ENCODING);
+  } else if (stream_compression_algorithm != GRPC_STREAM_COMPRESS_NONE) {
+    initialize_state(elem, calld);
+    error = grpc_metadata_batch_add_tail(
+        initial_metadata, &calld->stream_compression_algorithm_storage,
+        grpc_stream_compression_encoding_mdelem(stream_compression_algorithm),
+        GRPC_BATCH_CONTENT_ENCODING);
+  }
+  if (error != GRPC_ERROR_NONE) return error;
+  // Convey supported compression algorithms.
+  error = grpc_metadata_batch_add_tail(
+      initial_metadata, &calld->accept_encoding_storage,
+      GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(
+          channeld->enabled_message_compression_algorithms_bitset),
+      GRPC_BATCH_GRPC_ACCEPT_ENCODING);
+  if (error != GRPC_ERROR_NONE) return error;
+  // Do not overwrite accept-encoding header if it already presents (e.g., added
+  // by some proxy).
+  if (!initial_metadata->idx.named.accept_encoding) {
+    error = grpc_metadata_batch_add_tail(
+        initial_metadata, &calld->accept_stream_encoding_storage,
+        GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(
+            channeld->enabled_stream_compression_algorithms_bitset),
+        GRPC_BATCH_ACCEPT_ENCODING);
+  }
+  return error;
+}
+
+static void send_message_on_complete(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_slice_buffer_reset_and_unref_internal(&calld->slices);
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_send_message_on_complete,
+                          GRPC_ERROR_REF(error));
+}
+
+static void send_message_batch_continue(grpc_call_element* elem) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // Note: The call to grpc_call_next_op() results in yielding the
+  // call combiner, so we need to clear calld->send_message_batch
+  // before we do that.
+  grpc_transport_stream_op_batch* send_message_batch =
+      calld->send_message_batch;
+  calld->send_message_batch = nullptr;
+  grpc_call_next_op(elem, send_message_batch);
+}
+
+static void finish_send_message(grpc_call_element* elem) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  GPR_DEBUG_ASSERT(calld->message_compression_algorithm !=
+                   GRPC_MESSAGE_COMPRESS_NONE);
+  // Compress the data if appropriate.
+  grpc_slice_buffer tmp;
+  grpc_slice_buffer_init(&tmp);
+  uint32_t send_flags =
+      calld->send_message_batch->payload->send_message.send_message->flags();
+  bool did_compress = grpc_msg_compress(calld->message_compression_algorithm,
+                                        &calld->slices, &tmp);
+  if (did_compress) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) {
+      const char* algo_name;
+      const size_t before_size = calld->slices.length;
+      const size_t after_size = tmp.length;
+      const float savings_ratio = 1.0f - static_cast<float>(after_size) /
+                                             static_cast<float>(before_size);
+      GPR_ASSERT(grpc_message_compression_algorithm_name(
+          calld->message_compression_algorithm, &algo_name));
+      gpr_log(GPR_INFO,
+              "Compressed[%s] %" PRIuPTR " bytes vs. %" PRIuPTR
+              " bytes (%.2f%% savings)",
+              algo_name, before_size, after_size, 100 * savings_ratio);
+    }
+    grpc_slice_buffer_swap(&calld->slices, &tmp);
+    send_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
+  } else {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) {
+      const char* algo_name;
+      GPR_ASSERT(grpc_message_compression_algorithm_name(
+          calld->message_compression_algorithm, &algo_name));
+      gpr_log(GPR_INFO,
+              "Algorithm '%s' enabled but decided not to compress. Input size: "
+              "%" PRIuPTR,
+              algo_name, calld->slices.length);
+    }
+  }
+  grpc_slice_buffer_destroy_internal(&tmp);
+  // Swap out the original byte stream with our new one and send the
+  // batch down.
+  calld->replacement_stream.Init(&calld->slices, send_flags);
+  calld->send_message_batch->payload->send_message.send_message.reset(
+      calld->replacement_stream.get());
+  calld->original_send_message_on_complete =
+      calld->send_message_batch->on_complete;
+  calld->send_message_batch->on_complete = &calld->send_message_on_complete;
+  send_message_batch_continue(elem);
+}
+
+static void fail_send_message_batch_in_call_combiner(void* arg,
+                                                     grpc_error* error) {
+  call_data* calld = static_cast<call_data*>(arg);
+  if (calld->send_message_batch != nullptr) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        calld->send_message_batch, GRPC_ERROR_REF(error), calld->call_combiner);
+    calld->send_message_batch = nullptr;
+  }
+}
+
+// Pulls a slice from the send_message byte stream and adds it to calld->slices.
+static grpc_error* pull_slice_from_send_message(call_data* calld) {
+  grpc_slice incoming_slice;
+  grpc_error* error =
+      calld->send_message_batch->payload->send_message.send_message->Pull(
+          &incoming_slice);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_slice_buffer_add(&calld->slices, incoming_slice);
+  }
+  return error;
+}
+
+// Reads as many slices as possible from the send_message byte stream.
+// If all data has been read, invokes finish_send_message().  Otherwise,
+// an async call to ByteStream::Next() has been started, which will
+// eventually result in calling on_send_message_next_done().
+static void continue_reading_send_message(grpc_call_element* elem) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->slices.length ==
+      calld->send_message_batch->payload->send_message.send_message->length()) {
+    finish_send_message(elem);
+    return;
+  }
+  while (calld->send_message_batch->payload->send_message.send_message->Next(
+      ~static_cast<size_t>(0), &calld->on_send_message_next_done)) {
+    grpc_error* error = pull_slice_from_send_message(calld);
+    if (error != GRPC_ERROR_NONE) {
+      // Closure callback; does not take ownership of error.
+      fail_send_message_batch_in_call_combiner(calld, error);
+      GRPC_ERROR_UNREF(error);
+      return;
+    }
+    if (calld->slices.length == calld->send_message_batch->payload->send_message
+                                    .send_message->length()) {
+      finish_send_message(elem);
+      break;
+    }
+  }
+}
+
+// Async callback for ByteStream::Next().
+static void on_send_message_next_done(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error != GRPC_ERROR_NONE) {
+    // Closure callback; does not take ownership of error.
+    fail_send_message_batch_in_call_combiner(calld, error);
+    return;
+  }
+  error = pull_slice_from_send_message(calld);
+  if (error != GRPC_ERROR_NONE) {
+    // Closure callback; does not take ownership of error.
+    fail_send_message_batch_in_call_combiner(calld, error);
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  if (calld->slices.length ==
+      calld->send_message_batch->payload->send_message.send_message->length()) {
+    finish_send_message(elem);
+  } else {
+    continue_reading_send_message(elem);
+  }
+}
+
+static void start_send_message_batch(void* arg, grpc_error* /*unused*/) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  if (skip_message_compression(elem)) {
+    send_message_batch_continue(elem);
+  } else {
+    continue_reading_send_message(elem);
+  }
+}
+
+static void compress_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  GPR_TIMER_SCOPE("compress_start_transport_stream_op_batch", 0);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // Handle cancel_stream.
+  if (batch->cancel_stream) {
+    GRPC_ERROR_UNREF(calld->cancel_error);
+    calld->cancel_error =
+        GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
+    if (calld->send_message_batch != nullptr) {
+      if (!calld->seen_initial_metadata) {
+        GRPC_CALL_COMBINER_START(
+            calld->call_combiner,
+            GRPC_CLOSURE_CREATE(fail_send_message_batch_in_call_combiner, calld,
+                                grpc_schedule_on_exec_ctx),
+            GRPC_ERROR_REF(calld->cancel_error), "failing send_message op");
+      } else {
+        calld->send_message_batch->payload->send_message.send_message->Shutdown(
+            GRPC_ERROR_REF(calld->cancel_error));
+      }
+    }
+  } else if (calld->cancel_error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        batch, GRPC_ERROR_REF(calld->cancel_error), calld->call_combiner);
+    return;
+  }
+  // Handle send_initial_metadata.
+  if (batch->send_initial_metadata) {
+    GPR_ASSERT(!calld->seen_initial_metadata);
+    grpc_error* error = process_send_initial_metadata(
+        elem, batch->payload->send_initial_metadata.send_initial_metadata);
+    if (error != GRPC_ERROR_NONE) {
+      grpc_transport_stream_op_batch_finish_with_failure(batch, error,
+                                                         calld->call_combiner);
+      return;
+    }
+    calld->seen_initial_metadata = true;
+    // If we had previously received a batch containing a send_message op,
+    // handle it now.  Note that we need to re-enter the call combiner
+    // for this, since we can't send two batches down while holding the
+    // call combiner, since the connected_channel filter (at the bottom of
+    // the call stack) will release the call combiner for each batch it sees.
+    if (calld->send_message_batch != nullptr) {
+      GRPC_CALL_COMBINER_START(
+          calld->call_combiner,
+          &calld->start_send_message_batch_in_call_combiner, GRPC_ERROR_NONE,
+          "starting send_message after send_initial_metadata");
+    }
+  }
+  // Handle send_message.
+  if (batch->send_message) {
+    GPR_ASSERT(calld->send_message_batch == nullptr);
+    calld->send_message_batch = batch;
+    // If we have not yet seen send_initial_metadata, then we have to
+    // wait.  We save the batch in calld and then drop the call
+    // combiner, which we'll have to pick up again later when we get
+    // send_initial_metadata.
+    if (!calld->seen_initial_metadata) {
+      GRPC_CALL_COMBINER_STOP(
+          calld->call_combiner,
+          "send_message batch pending send_initial_metadata");
+      return;
+    }
+    start_send_message_batch(elem, GRPC_ERROR_NONE);
+  } else {
+    // Pass control down the stack.
+    grpc_call_next_op(elem, batch);
+  }
+}
+
+/* Constructor for call_data */
+static grpc_error* compress_init_call_elem(grpc_call_element* elem,
+                                           const grpc_call_element_args* args) {
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data */
+static void compress_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->~call_data();
+}
+
+/* Constructor for channel_data */
+static grpc_error* compress_init_channel_elem(grpc_channel_element* elem,
+                                              grpc_channel_element_args* args) {
+  channel_data* channeld = static_cast<channel_data*>(elem->channel_data);
+  // Get the enabled and the default algorithms from channel args.
+  channeld->enabled_compression_algorithms_bitset =
+      grpc_channel_args_compression_algorithm_get_states(args->channel_args);
+  channeld->default_compression_algorithm =
+      grpc_channel_args_get_channel_default_compression_algorithm(
+          args->channel_args);
+  // Make sure the default is enabled.
+  if (!GPR_BITGET(channeld->enabled_compression_algorithms_bitset,
+                  channeld->default_compression_algorithm)) {
+    const char* name;
+    GPR_ASSERT(grpc_compression_algorithm_name(
+                   channeld->default_compression_algorithm, &name) == 1);
+    gpr_log(GPR_ERROR,
+            "default compression algorithm %s not enabled: switching to none",
+            name);
+    channeld->default_compression_algorithm = GRPC_COMPRESS_NONE;
+  }
+  channeld->enabled_message_compression_algorithms_bitset =
+      grpc_compression_bitset_to_message_bitset(
+          channeld->enabled_compression_algorithms_bitset);
+  channeld->enabled_stream_compression_algorithms_bitset =
+      grpc_compression_bitset_to_stream_bitset(
+          channeld->enabled_compression_algorithms_bitset);
+  GPR_ASSERT(!args->is_last);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+static void compress_destroy_channel_elem(grpc_channel_element* /*elem*/) {}
+
+const grpc_channel_filter grpc_message_compress_filter = {
+    compress_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    compress_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    compress_destroy_call_elem,
+    sizeof(channel_data),
+    compress_init_channel_elem,
+    compress_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "message_compress"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.h
new file mode 100644
index 0000000..e163e3c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/message_compress/message_compress_filter.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/** Compression filter for outgoing data.
+ *
+ * See <grpc/compression.h> for the available compression settings.
+ *
+ * Compression settings may come from:
+ *  - Channel configuration, as established at channel creation time.
+ *  - The metadata accompanying the outgoing data to be compressed. This is
+ *    taken as a request only. We may choose not to honor it. The metadata key
+ *    is given by \a GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY.
+ *
+ * Compression can be disabled for concrete messages (for instance in order to
+ * prevent CRIME/BEAST type attacks) by having the GRPC_WRITE_NO_COMPRESS set in
+ * the BEGIN_MESSAGE flags.
+ *
+ * The attempted compression mechanism is added to the resulting initial
+ * metadata under the'grpc-encoding' key.
+ *
+ * If compression is actually performed, BEGIN_MESSAGE's flag is modified to
+ * incorporate GRPC_WRITE_INTERNAL_COMPRESS. Otherwise, and regardless of the
+ * aforementioned 'grpc-encoding' metadata value, data will pass through
+ * uncompressed. */
+
+extern const grpc_channel_filter grpc_message_compress_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_MESSAGE_COMPRESS_MESSAGE_COMPRESS_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.cc
new file mode 100644
index 0000000..62dc76f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.cc	
@@ -0,0 +1,528 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/http/server/http_server_filter.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <string.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/b64.h"
+#include "src/core/lib/slice/percent_encoding.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define EXPECTED_CONTENT_TYPE "application/grpc"
+#define EXPECTED_CONTENT_TYPE_LENGTH sizeof(EXPECTED_CONTENT_TYPE) - 1
+
+static void hs_recv_initial_metadata_ready(void* user_data, grpc_error* err);
+static void hs_recv_trailing_metadata_ready(void* user_data, grpc_error* err);
+static void hs_recv_message_ready(void* user_data, grpc_error* err);
+
+namespace {
+
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : call_combiner(args.call_combiner) {
+    GRPC_CLOSURE_INIT(&recv_initial_metadata_ready,
+                      hs_recv_initial_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_message_ready, hs_recv_message_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready,
+                      hs_recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+  }
+
+  ~call_data() {
+    GRPC_ERROR_UNREF(recv_initial_metadata_ready_error);
+    if (have_read_stream) {
+      read_stream->Orphan();
+    }
+  }
+
+  grpc_core::CallCombiner* call_combiner;
+
+  // Outgoing headers to add to send_initial_metadata.
+  grpc_linked_mdelem status;
+  grpc_linked_mdelem content_type;
+
+  // If we see the recv_message contents in the GET query string, we
+  // store it here.
+  grpc_core::ManualConstructor<grpc_core::SliceBufferByteStream> read_stream;
+  bool have_read_stream = false;
+
+  // State for intercepting recv_initial_metadata.
+  grpc_closure recv_initial_metadata_ready;
+  grpc_error* recv_initial_metadata_ready_error = GRPC_ERROR_NONE;
+  grpc_closure* original_recv_initial_metadata_ready;
+  grpc_metadata_batch* recv_initial_metadata = nullptr;
+  uint32_t* recv_initial_metadata_flags;
+  bool seen_recv_initial_metadata_ready = false;
+
+  // State for intercepting recv_message.
+  grpc_closure* original_recv_message_ready;
+  grpc_closure recv_message_ready;
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message;
+  bool seen_recv_message_ready = false;
+
+  // State for intercepting recv_trailing_metadata
+  grpc_closure recv_trailing_metadata_ready;
+  grpc_closure* original_recv_trailing_metadata_ready;
+  grpc_error* recv_trailing_metadata_ready_error;
+  bool seen_recv_trailing_metadata_ready = false;
+};
+
+struct channel_data {
+  bool surface_user_agent;
+};
+
+}  // namespace
+
+static grpc_error* hs_filter_outgoing_metadata(grpc_metadata_batch* b) {
+  if (b->idx.named.grpc_message != nullptr) {
+    grpc_slice pct_encoded_msg = grpc_percent_encode_slice(
+        GRPC_MDVALUE(b->idx.named.grpc_message->md),
+        grpc_compatible_percent_encoding_unreserved_bytes);
+    if (grpc_slice_is_equivalent(pct_encoded_msg,
+                                 GRPC_MDVALUE(b->idx.named.grpc_message->md))) {
+      grpc_slice_unref_internal(pct_encoded_msg);
+    } else {
+      grpc_metadata_batch_set_value(b->idx.named.grpc_message, pct_encoded_msg);
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static void hs_add_error(const char* error_name, grpc_error** cumulative,
+                         grpc_error* new_err) {
+  if (new_err == GRPC_ERROR_NONE) return;
+  if (*cumulative == GRPC_ERROR_NONE) {
+    *cumulative = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_name);
+  }
+  *cumulative = grpc_error_add_child(*cumulative, new_err);
+}
+
+// Metadata equality within this filter leverages the fact that the sender was
+// likely using the gRPC chttp2 transport, in which case the encoder would emit
+// indexed values, in which case the local hpack parser would intern the
+// relevant metadata, allowing a simple pointer comparison.
+//
+// That said, if the header was transmitted sans indexing/encoding, we still
+// need to do the right thing.
+//
+// Assumptions:
+// 1) The keys for a and b_static must match
+// 2) b_static must be a statically allocated metadata object.
+// 3) It is assumed that the remote end is indexing, but not necessary.
+// TODO(arjunroy): Revisit this method when grpc_mdelem is strongly typed.
+static bool md_strict_equal(grpc_mdelem a, grpc_mdelem b_static) {
+  // Hpack encoder on the remote side should emit indexed values, in which case
+  // hpack parser on this end should pick up interned values, in which case the
+  // pointer comparison alone is enough.
+  //
+  if (GPR_LIKELY(GRPC_MDELEM_IS_INTERNED(a))) {
+    return a.payload == b_static.payload;
+  } else {
+    return grpc_slice_eq_static_interned(GRPC_MDVALUE(a),
+                                         GRPC_MDVALUE(b_static));
+  }
+}
+
+static grpc_error* hs_filter_incoming_metadata(grpc_call_element* elem,
+                                               grpc_metadata_batch* b) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* error_name = "Failed processing incoming headers";
+
+  if (b->idx.named.method != nullptr) {
+    if (md_strict_equal(b->idx.named.method->md, GRPC_MDELEM_METHOD_POST)) {
+      *calld->recv_initial_metadata_flags &=
+          ~(GRPC_INITIAL_METADATA_CACHEABLE_REQUEST |
+            GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST);
+    } else if (md_strict_equal(b->idx.named.method->md,
+                               GRPC_MDELEM_METHOD_PUT)) {
+      *calld->recv_initial_metadata_flags &=
+          ~GRPC_INITIAL_METADATA_CACHEABLE_REQUEST;
+      *calld->recv_initial_metadata_flags |=
+          GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST;
+    } else if (md_strict_equal(b->idx.named.method->md,
+                               GRPC_MDELEM_METHOD_GET)) {
+      *calld->recv_initial_metadata_flags |=
+          GRPC_INITIAL_METADATA_CACHEABLE_REQUEST;
+      *calld->recv_initial_metadata_flags &=
+          ~GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST;
+    } else {
+      hs_add_error(error_name, &error,
+                   grpc_attach_md_to_error(
+                       GRPC_ERROR_CREATE_FROM_STATIC_STRING("Bad header"),
+                       b->idx.named.method->md));
+    }
+    grpc_metadata_batch_remove(b, GRPC_BATCH_METHOD);
+  } else {
+    hs_add_error(
+        error_name, &error,
+        grpc_error_set_str(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
+            GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":method")));
+  }
+
+  if (b->idx.named.te != nullptr) {
+    if (!grpc_mdelem_static_value_eq(b->idx.named.te->md,
+                                     GRPC_MDELEM_TE_TRAILERS)) {
+      hs_add_error(error_name, &error,
+                   grpc_attach_md_to_error(
+                       GRPC_ERROR_CREATE_FROM_STATIC_STRING("Bad header"),
+                       b->idx.named.te->md));
+    }
+    grpc_metadata_batch_remove(b, GRPC_BATCH_TE);
+  } else {
+    hs_add_error(error_name, &error,
+                 grpc_error_set_str(
+                     GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
+                     GRPC_ERROR_STR_KEY, grpc_slice_from_static_string("te")));
+  }
+
+  if (b->idx.named.scheme != nullptr) {
+    if (!md_strict_equal(b->idx.named.scheme->md, GRPC_MDELEM_SCHEME_HTTP) &&
+        !md_strict_equal(b->idx.named.scheme->md, GRPC_MDELEM_SCHEME_HTTPS) &&
+        !grpc_mdelem_static_value_eq(b->idx.named.scheme->md,
+                                     GRPC_MDELEM_SCHEME_GRPC)) {
+      hs_add_error(error_name, &error,
+                   grpc_attach_md_to_error(
+                       GRPC_ERROR_CREATE_FROM_STATIC_STRING("Bad header"),
+                       b->idx.named.scheme->md));
+    }
+    grpc_metadata_batch_remove(b, GRPC_BATCH_SCHEME);
+  } else {
+    hs_add_error(
+        error_name, &error,
+        grpc_error_set_str(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
+            GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":scheme")));
+  }
+
+  if (b->idx.named.content_type != nullptr) {
+    if (!grpc_mdelem_static_value_eq(
+            b->idx.named.content_type->md,
+            GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC)) {
+      if (grpc_slice_buf_start_eq(GRPC_MDVALUE(b->idx.named.content_type->md),
+                                  EXPECTED_CONTENT_TYPE,
+                                  EXPECTED_CONTENT_TYPE_LENGTH) &&
+          (GRPC_SLICE_START_PTR(GRPC_MDVALUE(
+               b->idx.named.content_type->md))[EXPECTED_CONTENT_TYPE_LENGTH] ==
+               '+' ||
+           GRPC_SLICE_START_PTR(GRPC_MDVALUE(
+               b->idx.named.content_type->md))[EXPECTED_CONTENT_TYPE_LENGTH] ==
+               ';')) {
+        /* Although the C implementation doesn't (currently) generate them,
+           any custom +-suffix is explicitly valid. */
+        /* TODO(klempner): We should consider preallocating common values such
+           as +proto or +json, or at least stashing them if we see them. */
+        /* TODO(klempner): Should we be surfacing this to application code? */
+      } else {
+        /* TODO(klempner): We're currently allowing this, but we shouldn't
+           see it without a proxy so log for now. */
+        char* val = grpc_dump_slice(GRPC_MDVALUE(b->idx.named.content_type->md),
+                                    GPR_DUMP_ASCII);
+        gpr_log(GPR_INFO, "Unexpected content-type '%s'", val);
+        gpr_free(val);
+      }
+    }
+    grpc_metadata_batch_remove(b, GRPC_BATCH_CONTENT_TYPE);
+  }
+
+  if (b->idx.named.path == nullptr) {
+    hs_add_error(
+        error_name, &error,
+        grpc_error_set_str(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
+            GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":path")));
+  } else if (*calld->recv_initial_metadata_flags &
+             GRPC_INITIAL_METADATA_CACHEABLE_REQUEST) {
+    /* We have a cacheable request made with GET verb. The path contains the
+     * query parameter which is base64 encoded request payload. */
+    const char k_query_separator = '?';
+    grpc_slice path_slice = GRPC_MDVALUE(b->idx.named.path->md);
+    uint8_t* path_ptr = GRPC_SLICE_START_PTR(path_slice);
+    size_t path_length = GRPC_SLICE_LENGTH(path_slice);
+    /* offset of the character '?' */
+    size_t offset = 0;
+    for (offset = 0; offset < path_length && *path_ptr != k_query_separator;
+         path_ptr++, offset++)
+      ;
+    if (offset < path_length) {
+      grpc_slice query_slice =
+          grpc_slice_sub(path_slice, offset + 1, path_length);
+
+      /* substitute path metadata with just the path (not query) */
+      grpc_mdelem mdelem_path_without_query = grpc_mdelem_from_slices(
+          GRPC_MDSTR_PATH, grpc_slice_sub(path_slice, 0, offset));
+
+      grpc_metadata_batch_substitute(b, b->idx.named.path,
+                                     mdelem_path_without_query);
+
+      /* decode payload from query and add to the slice buffer to be returned */
+      const int k_url_safe = 1;
+      grpc_slice_buffer read_slice_buffer;
+      grpc_slice_buffer_init(&read_slice_buffer);
+      grpc_slice_buffer_add(
+          &read_slice_buffer,
+          grpc_base64_decode_with_len(
+              reinterpret_cast<const char*> GRPC_SLICE_START_PTR(query_slice),
+              GRPC_SLICE_LENGTH(query_slice), k_url_safe));
+      calld->read_stream.Init(&read_slice_buffer, 0);
+      grpc_slice_buffer_destroy_internal(&read_slice_buffer);
+      calld->have_read_stream = true;
+      grpc_slice_unref_internal(query_slice);
+    } else {
+      gpr_log(GPR_ERROR, "GET request without QUERY");
+    }
+  }
+
+  if (b->idx.named.host != nullptr && b->idx.named.authority == nullptr) {
+    grpc_linked_mdelem* el = b->idx.named.host;
+    grpc_mdelem md = GRPC_MDELEM_REF(el->md);
+    grpc_metadata_batch_remove(b, el);
+    hs_add_error(
+        error_name, &error,
+        grpc_metadata_batch_add_head(
+            b, el,
+            grpc_mdelem_from_slices(GRPC_MDSTR_AUTHORITY,
+                                    grpc_slice_ref_internal(GRPC_MDVALUE(md))),
+            GRPC_BATCH_AUTHORITY));
+    GRPC_MDELEM_UNREF(md);
+  }
+
+  if (b->idx.named.authority == nullptr) {
+    hs_add_error(
+        error_name, &error,
+        grpc_error_set_str(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
+            GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":authority")));
+  }
+
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  if (!chand->surface_user_agent && b->idx.named.user_agent != nullptr) {
+    grpc_metadata_batch_remove(b, GRPC_BATCH_USER_AGENT);
+  }
+
+  return error;
+}
+
+static void hs_recv_initial_metadata_ready(void* user_data, grpc_error* err) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->seen_recv_initial_metadata_ready = true;
+  if (err == GRPC_ERROR_NONE) {
+    err = hs_filter_incoming_metadata(elem, calld->recv_initial_metadata);
+    calld->recv_initial_metadata_ready_error = GRPC_ERROR_REF(err);
+    if (calld->seen_recv_message_ready) {
+      // We've already seen the recv_message callback, but we previously
+      // deferred it, so we need to return it here.
+      // Replace the recv_message byte stream if needed.
+      if (calld->have_read_stream) {
+        calld->recv_message->reset(calld->read_stream.get());
+        calld->have_read_stream = false;
+      }
+      // Re-enter call combiner for original_recv_message_ready, since the
+      // surface code will release the call combiner for each callback it
+      // receives.
+      GRPC_CALL_COMBINER_START(
+          calld->call_combiner, calld->original_recv_message_ready,
+          GRPC_ERROR_REF(err),
+          "resuming recv_message_ready from recv_initial_metadata_ready");
+    }
+  } else {
+    GRPC_ERROR_REF(err);
+  }
+  if (calld->seen_recv_trailing_metadata_ready) {
+    GRPC_CALL_COMBINER_START(calld->call_combiner,
+                             &calld->recv_trailing_metadata_ready,
+                             calld->recv_trailing_metadata_ready_error,
+                             "resuming hs_recv_trailing_metadata_ready from "
+                             "hs_recv_initial_metadata_ready");
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_initial_metadata_ready, err);
+}
+
+static void hs_recv_message_ready(void* user_data, grpc_error* err) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->seen_recv_message_ready = true;
+  if (calld->seen_recv_initial_metadata_ready) {
+    // We've already seen the recv_initial_metadata callback, so
+    // replace the recv_message byte stream if needed and invoke the
+    // original recv_message callback immediately.
+    if (calld->have_read_stream) {
+      calld->recv_message->reset(calld->read_stream.get());
+      calld->have_read_stream = false;
+    }
+    grpc_core::Closure::Run(DEBUG_LOCATION, calld->original_recv_message_ready,
+                            GRPC_ERROR_REF(err));
+  } else {
+    // We have not yet seen the recv_initial_metadata callback, so we
+    // need to wait to see if this is a GET request.
+    // Note that we release the call combiner here, so that other
+    // callbacks can run.
+    GRPC_CALL_COMBINER_STOP(
+        calld->call_combiner,
+        "pausing recv_message_ready until recv_initial_metadata_ready");
+  }
+}
+
+static void hs_recv_trailing_metadata_ready(void* user_data, grpc_error* err) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (!calld->seen_recv_initial_metadata_ready) {
+    calld->recv_trailing_metadata_ready_error = GRPC_ERROR_REF(err);
+    calld->seen_recv_trailing_metadata_ready = true;
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner,
+                            "deferring hs_recv_trailing_metadata_ready until "
+                            "ater hs_recv_initial_metadata_ready");
+    return;
+  }
+  err = grpc_error_add_child(
+      GRPC_ERROR_REF(err),
+      GRPC_ERROR_REF(calld->recv_initial_metadata_ready_error));
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_trailing_metadata_ready, err);
+}
+
+static grpc_error* hs_mutate_op(grpc_call_element* elem,
+                                grpc_transport_stream_op_batch* op) {
+  /* grab pointers to our data from the call element */
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+
+  if (op->send_initial_metadata) {
+    grpc_error* error = GRPC_ERROR_NONE;
+    static const char* error_name = "Failed sending initial metadata";
+    hs_add_error(
+        error_name, &error,
+        grpc_metadata_batch_add_head(
+            op->payload->send_initial_metadata.send_initial_metadata,
+            &calld->status, GRPC_MDELEM_STATUS_200, GRPC_BATCH_STATUS));
+    hs_add_error(error_name, &error,
+                 grpc_metadata_batch_add_tail(
+                     op->payload->send_initial_metadata.send_initial_metadata,
+                     &calld->content_type,
+                     GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC,
+                     GRPC_BATCH_CONTENT_TYPE));
+    hs_add_error(error_name, &error,
+                 hs_filter_outgoing_metadata(
+                     op->payload->send_initial_metadata.send_initial_metadata));
+    if (error != GRPC_ERROR_NONE) return error;
+  }
+
+  if (op->recv_initial_metadata) {
+    /* substitute our callback for the higher callback */
+    GPR_ASSERT(op->payload->recv_initial_metadata.recv_flags != nullptr);
+    calld->recv_initial_metadata =
+        op->payload->recv_initial_metadata.recv_initial_metadata;
+    calld->recv_initial_metadata_flags =
+        op->payload->recv_initial_metadata.recv_flags;
+    calld->original_recv_initial_metadata_ready =
+        op->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    op->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->recv_initial_metadata_ready;
+  }
+
+  if (op->recv_message) {
+    calld->recv_message = op->payload->recv_message.recv_message;
+    calld->original_recv_message_ready =
+        op->payload->recv_message.recv_message_ready;
+    op->payload->recv_message.recv_message_ready = &calld->recv_message_ready;
+  }
+
+  if (op->recv_trailing_metadata) {
+    calld->original_recv_trailing_metadata_ready =
+        op->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    op->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &calld->recv_trailing_metadata_ready;
+  }
+
+  if (op->send_trailing_metadata) {
+    grpc_error* error = hs_filter_outgoing_metadata(
+        op->payload->send_trailing_metadata.send_trailing_metadata);
+    if (error != GRPC_ERROR_NONE) return error;
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+static void hs_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  GPR_TIMER_SCOPE("hs_start_transport_stream_op_batch", 0);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_error* error = hs_mutate_op(elem, op);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(op, error,
+                                                       calld->call_combiner);
+  } else {
+    grpc_call_next_op(elem, op);
+  }
+}
+
+/* Constructor for call_data */
+static grpc_error* hs_init_call_elem(grpc_call_element* elem,
+                                     const grpc_call_element_args* args) {
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data */
+static void hs_destroy_call_elem(grpc_call_element* elem,
+                                 const grpc_call_final_info* /*final_info*/,
+                                 grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->~call_data();
+}
+
+/* Constructor for channel_data */
+static grpc_error* hs_init_channel_elem(grpc_channel_element* elem,
+                                        grpc_channel_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  GPR_ASSERT(!args->is_last);
+  chand->surface_user_agent = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args->channel_args,
+                             const_cast<char*>(GRPC_ARG_SURFACE_USER_AGENT)),
+      true);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+static void hs_destroy_channel_elem(grpc_channel_element* /*elem*/) {}
+
+const grpc_channel_filter grpc_http_server_filter = {
+    hs_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    hs_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    hs_destroy_call_elem,
+    sizeof(channel_data),
+    hs_init_channel_elem,
+    hs_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "http-server"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.h
new file mode 100644
index 0000000..e4e0546
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/http/server/http_server_filter.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+/* Processes metadata on the server side for HTTP2 transports */
+extern const grpc_channel_filter grpc_http_server_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_HTTP_SERVER_HTTP_SERVER_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.cc
new file mode 100644
index 0000000..0cf6f54
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.cc	
@@ -0,0 +1,556 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/max_age/max_age_filter.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+/* If these settings change, make sure that we are not sending a GOAWAY for
+ * inproc transport, since a GOAWAY to inproc ends up destroying the transport.
+ */
+#define DEFAULT_MAX_CONNECTION_AGE_MS INT_MAX
+#define DEFAULT_MAX_CONNECTION_AGE_GRACE_MS INT_MAX
+#define DEFAULT_MAX_CONNECTION_IDLE_MS INT_MAX
+#define MAX_CONNECTION_AGE_JITTER 0.1
+
+#define MAX_CONNECTION_AGE_INTEGER_OPTIONS \
+  { DEFAULT_MAX_CONNECTION_AGE_MS, 1, INT_MAX }
+#define MAX_CONNECTION_IDLE_INTEGER_OPTIONS \
+  { DEFAULT_MAX_CONNECTION_IDLE_MS, 1, INT_MAX }
+
+/* States for idle_state in channel_data */
+#define MAX_IDLE_STATE_INIT ((gpr_atm)0)
+#define MAX_IDLE_STATE_SEEN_EXIT_IDLE ((gpr_atm)1)
+#define MAX_IDLE_STATE_SEEN_ENTER_IDLE ((gpr_atm)2)
+#define MAX_IDLE_STATE_TIMER_SET ((gpr_atm)3)
+
+namespace {
+struct channel_data {
+  /* The channel stack to which we take refs for pending callbacks. */
+  grpc_channel_stack* channel_stack;
+  /* Guards access to max_age_timer, max_age_timer_pending, max_age_grace_timer
+     and max_age_grace_timer_pending */
+  gpr_mu max_age_timer_mu;
+  /* True if the max_age timer callback is currently pending */
+  bool max_age_timer_pending;
+  /* True if the max_age_grace timer callback is currently pending */
+  bool max_age_grace_timer_pending;
+  /* The timer for checking if the channel has reached its max age */
+  grpc_timer max_age_timer;
+  /* The timer for checking if the max-aged channel has uesed up the grace
+     period */
+  grpc_timer max_age_grace_timer;
+  /* The timer for checking if the channel's idle duration reaches
+     max_connection_idle */
+  grpc_timer max_idle_timer;
+  /* Allowed max time a channel may have no outstanding rpcs */
+  grpc_millis max_connection_idle;
+  /* Allowed max time a channel may exist */
+  grpc_millis max_connection_age;
+  /* Allowed grace period after the channel reaches its max age */
+  grpc_millis max_connection_age_grace;
+  /* Closure to run when the channel's idle duration reaches max_connection_idle
+     and should be closed gracefully */
+  grpc_closure max_idle_timer_cb;
+  /* Closure to run when the channel reaches its max age and should be closed
+     gracefully */
+  grpc_closure close_max_age_channel;
+  /* Closure to run the channel uses up its max age grace time and should be
+     closed forcibly */
+  grpc_closure force_close_max_age_channel;
+  /* Closure to run when the init fo channel stack is done and the max_idle
+     timer should be started */
+  grpc_closure start_max_idle_timer_after_init;
+  /* Closure to run when the init fo channel stack is done and the max_age timer
+     should be started */
+  grpc_closure start_max_age_timer_after_init;
+  /* Closure to run when the goaway op is finished and the max_age_timer */
+  grpc_closure start_max_age_grace_timer_after_goaway_op;
+  /* Number of active calls */
+  gpr_atm call_count;
+  /* TODO(zyc): C++lize this state machine */
+  /* 'idle_state' holds the states of max_idle_timer and channel idleness.
+      It can contain one of the following values:
+     +--------------------------------+----------------+---------+
+     |           idle_state           | max_idle_timer | channel |
+     +--------------------------------+----------------+---------+
+     | MAX_IDLE_STATE_INIT            | unset          | busy    |
+     | MAX_IDLE_STATE_TIMER_SET       | set, valid     | idle    |
+     | MAX_IDLE_STATE_SEEN_EXIT_IDLE  | set, invalid   | busy    |
+     | MAX_IDLE_STATE_SEEN_ENTER_IDLE | set, invalid   | idle    |
+     +--------------------------------+----------------+---------+
+
+     MAX_IDLE_STATE_INIT: The initial and final state of 'idle_state'. The
+     channel has 1 or 1+ active calls, and the timer is not set. Note that
+     we may put a virtual call to hold this state at channel initialization or
+     shutdown, so that the channel won't enter other states.
+
+     MAX_IDLE_STATE_TIMER_SET: The state after the timer is set and no calls
+     have arrived after the timer is set. The channel must have 0 active call in
+     this state. If the timer is fired in this state, we will close the channel
+     due to idleness.
+
+     MAX_IDLE_STATE_SEEN_EXIT_IDLE: The state after the timer is set and at
+     least one call has arrived after the timer is set. The channel must have 1
+     or 1+ active calls in this state. If the timer is fired in this state, we
+     won't reschudle it.
+
+     MAX_IDLE_STATE_SEEN_ENTER_IDLE: The state after the timer is set and the at
+     least one call has arrived after the timer is set, BUT the channel
+     currently has 0 active calls. If the timer is fired in this state, we will
+     reschudle it.
+
+     max_idle_timer will not be cancelled (unless the channel is shutting down).
+     If the timer callback is called when the max_idle_timer is valid (i.e.
+     idle_state is MAX_IDLE_STATE_TIMER_SET), the channel will be closed due to
+     idleness, otherwise the channel won't be changed.
+
+     State transitions:
+         MAX_IDLE_STATE_INIT <-------3------ MAX_IDLE_STATE_SEEN_EXIT_IDLE
+              ^    |                              ^     ^    |
+              |    |                              |     |    |
+              1    2     +-----------4------------+     6    7
+              |    |     |                              |    |
+              |    v     |                              |    v
+       MAX_IDLE_STATE_TIMER_SET <----5------ MAX_IDLE_STATE_SEEN_ENTER_IDLE
+
+     For 1, 3, 5 :  See max_idle_timer_cb() function
+     For 2, 7    :  See decrease_call_count() function
+     For 4, 6    :  See increase_call_count() function */
+  gpr_atm idle_state;
+  /* Time when the channel finished its last outstanding call, in grpc_millis */
+  gpr_atm last_enter_idle_time_millis;
+};
+}  // namespace
+
+/* Increase the nubmer of active calls. Before the increasement, if there are no
+   calls, the max_idle_timer should be cancelled. */
+static void increase_call_count(channel_data* chand) {
+  /* Exit idle */
+  if (gpr_atm_full_fetch_add(&chand->call_count, 1) == 0) {
+    while (true) {
+      gpr_atm idle_state = gpr_atm_acq_load(&chand->idle_state);
+      switch (idle_state) {
+        case MAX_IDLE_STATE_TIMER_SET:
+          /* max_idle_timer_cb may have already set idle_state to
+             MAX_IDLE_STATE_INIT, in this case, we don't need to set it to
+             MAX_IDLE_STATE_SEEN_EXIT_IDLE */
+          gpr_atm_rel_cas(&chand->idle_state, MAX_IDLE_STATE_TIMER_SET,
+                          MAX_IDLE_STATE_SEEN_EXIT_IDLE);
+          return;
+        case MAX_IDLE_STATE_SEEN_ENTER_IDLE:
+          gpr_atm_rel_store(&chand->idle_state, MAX_IDLE_STATE_SEEN_EXIT_IDLE);
+          return;
+        default:
+          /* try again */
+          break;
+      }
+    }
+  }
+}
+
+/* Decrease the nubmer of active calls. After the decrement, if there are no
+   calls, the max_idle_timer should be started. */
+static void decrease_call_count(channel_data* chand) {
+  /* Enter idle */
+  if (gpr_atm_full_fetch_add(&chand->call_count, -1) == 1) {
+    gpr_atm_no_barrier_store(&chand->last_enter_idle_time_millis,
+                             (gpr_atm)grpc_core::ExecCtx::Get()->Now());
+    while (true) {
+      gpr_atm idle_state = gpr_atm_acq_load(&chand->idle_state);
+      switch (idle_state) {
+        case MAX_IDLE_STATE_INIT:
+          GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                                 "max_age max_idle_timer");
+          grpc_timer_init(
+              &chand->max_idle_timer,
+              grpc_core::ExecCtx::Get()->Now() + chand->max_connection_idle,
+              &chand->max_idle_timer_cb);
+          gpr_atm_rel_store(&chand->idle_state, MAX_IDLE_STATE_TIMER_SET);
+          return;
+        case MAX_IDLE_STATE_SEEN_EXIT_IDLE:
+          if (gpr_atm_rel_cas(&chand->idle_state, MAX_IDLE_STATE_SEEN_EXIT_IDLE,
+                              MAX_IDLE_STATE_SEEN_ENTER_IDLE)) {
+            return;
+          }
+          break;
+        default:
+          /* try again */
+          break;
+      }
+    }
+  }
+}
+
+static void start_max_idle_timer_after_init(void* arg, grpc_error* /*error*/) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  /* Decrease call_count. If there are no active calls at this time,
+     max_idle_timer will start here. If the number of active calls is not 0,
+     max_idle_timer will start after all the active calls end. */
+  decrease_call_count(chand);
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack,
+                           "max_age start_max_idle_timer_after_init");
+}
+
+namespace grpc_core {
+
+class ConnectivityWatcher : public AsyncConnectivityStateWatcherInterface {
+ public:
+  explicit ConnectivityWatcher(channel_data* chand) : chand_(chand) {
+    GRPC_CHANNEL_STACK_REF(chand_->channel_stack, "max_age conn_watch");
+  }
+
+  ~ConnectivityWatcher() {
+    GRPC_CHANNEL_STACK_UNREF(chand_->channel_stack, "max_age conn_watch");
+  }
+
+ private:
+  void OnConnectivityStateChange(grpc_connectivity_state new_state) override {
+    if (new_state != GRPC_CHANNEL_SHUTDOWN) return;
+    {
+      MutexLock lock(&chand_->max_age_timer_mu);
+      if (chand_->max_age_timer_pending) {
+        grpc_timer_cancel(&chand_->max_age_timer);
+        chand_->max_age_timer_pending = false;
+      }
+      if (chand_->max_age_grace_timer_pending) {
+        grpc_timer_cancel(&chand_->max_age_grace_timer);
+        chand_->max_age_grace_timer_pending = false;
+      }
+    }
+    /* If there are no active calls, this increasement will cancel
+       max_idle_timer, and prevent max_idle_timer from being started in the
+       future. */
+    increase_call_count(chand_);
+    if (gpr_atm_acq_load(&chand_->idle_state) ==
+        MAX_IDLE_STATE_SEEN_EXIT_IDLE) {
+      grpc_timer_cancel(&chand_->max_idle_timer);
+    }
+  }
+
+  channel_data* chand_;
+};
+
+}  // namespace grpc_core
+
+static void start_max_age_timer_after_init(void* arg, grpc_error* /*error*/) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = true;
+  GRPC_CHANNEL_STACK_REF(chand->channel_stack, "max_age max_age_timer");
+  grpc_timer_init(&chand->max_age_timer,
+                  grpc_core::ExecCtx::Get()->Now() + chand->max_connection_age,
+                  &chand->close_max_age_channel);
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  op->start_connectivity_watch.reset(new grpc_core::ConnectivityWatcher(chand));
+  op->start_connectivity_watch_state = GRPC_CHANNEL_IDLE;
+  grpc_channel_next_op(grpc_channel_stack_element(chand->channel_stack, 0), op);
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack,
+                           "max_age start_max_age_timer_after_init");
+}
+
+static void start_max_age_grace_timer_after_goaway_op(void* arg,
+                                                      grpc_error* /*error*/) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_grace_timer_pending = true;
+  GRPC_CHANNEL_STACK_REF(chand->channel_stack, "max_age max_age_grace_timer");
+  grpc_timer_init(
+      &chand->max_age_grace_timer,
+      chand->max_connection_age_grace == GRPC_MILLIS_INF_FUTURE
+          ? GRPC_MILLIS_INF_FUTURE
+          : grpc_core::ExecCtx::Get()->Now() + chand->max_connection_age_grace,
+      &chand->force_close_max_age_channel);
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack,
+                           "max_age start_max_age_grace_timer_after_goaway_op");
+}
+
+static void close_max_idle_channel(channel_data* chand) {
+  /* Prevent the max idle timer from being set again */
+  gpr_atm_no_barrier_fetch_add(&chand->call_count, 1);
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  op->goaway_error =
+      grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("max_idle"),
+                         GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_NO_ERROR);
+  grpc_channel_element* elem =
+      grpc_channel_stack_element(chand->channel_stack, 0);
+  elem->filter->start_transport_op(elem, op);
+}
+
+static void max_idle_timer_cb(void* arg, grpc_error* error) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    bool try_again = true;
+    while (try_again) {
+      gpr_atm idle_state = gpr_atm_acq_load(&chand->idle_state);
+      switch (idle_state) {
+        case MAX_IDLE_STATE_TIMER_SET:
+          close_max_idle_channel(chand);
+          /* This MAX_IDLE_STATE_INIT is a final state, we don't have to check
+           * if idle_state has been changed */
+          gpr_atm_rel_store(&chand->idle_state, MAX_IDLE_STATE_INIT);
+          try_again = false;
+          break;
+        case MAX_IDLE_STATE_SEEN_EXIT_IDLE:
+          if (gpr_atm_rel_cas(&chand->idle_state, MAX_IDLE_STATE_SEEN_EXIT_IDLE,
+                              MAX_IDLE_STATE_INIT)) {
+            try_again = false;
+          }
+          break;
+        case MAX_IDLE_STATE_SEEN_ENTER_IDLE:
+          GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                                 "max_age max_idle_timer");
+          grpc_timer_init(&chand->max_idle_timer,
+                          static_cast<grpc_millis>(gpr_atm_no_barrier_load(
+                              &chand->last_enter_idle_time_millis)) +
+                              chand->max_connection_idle,
+                          &chand->max_idle_timer_cb);
+          /* idle_state may have already been set to
+             MAX_IDLE_STATE_SEEN_EXIT_IDLE by increase_call_count(), in this
+             case, we don't need to set it to MAX_IDLE_STATE_TIMER_SET */
+          gpr_atm_rel_cas(&chand->idle_state, MAX_IDLE_STATE_SEEN_ENTER_IDLE,
+                          MAX_IDLE_STATE_TIMER_SET);
+          try_again = false;
+          break;
+        default:
+          /* try again */
+          break;
+      }
+    }
+  }
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack, "max_age max_idle_timer");
+}
+
+static void close_max_age_channel(void* arg, grpc_error* error) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = false;
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  if (error == GRPC_ERROR_NONE) {
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_age_grace_timer_after_goaway_op");
+    grpc_transport_op* op = grpc_make_transport_op(
+        &chand->start_max_age_grace_timer_after_goaway_op);
+    op->goaway_error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("max_age"),
+                           GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_NO_ERROR);
+    grpc_channel_element* elem =
+        grpc_channel_stack_element(chand->channel_stack, 0);
+    elem->filter->start_transport_op(elem, op);
+  } else if (error != GRPC_ERROR_CANCELLED) {
+    GRPC_LOG_IF_ERROR("close_max_age_channel", error);
+  }
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack, "max_age max_age_timer");
+}
+
+static void force_close_max_age_channel(void* arg, grpc_error* error) {
+  channel_data* chand = static_cast<channel_data*>(arg);
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_grace_timer_pending = false;
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_transport_op* op = grpc_make_transport_op(nullptr);
+    op->disconnect_with_error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Channel reaches max age");
+    grpc_channel_element* elem =
+        grpc_channel_stack_element(chand->channel_stack, 0);
+    elem->filter->start_transport_op(elem, op);
+  } else if (error != GRPC_ERROR_CANCELLED) {
+    GRPC_LOG_IF_ERROR("force_close_max_age_channel", error);
+  }
+  GRPC_CHANNEL_STACK_UNREF(chand->channel_stack, "max_age max_age_grace_timer");
+}
+
+/* A random jitter of +/-10% will be added to MAX_CONNECTION_AGE to spread out
+   connection storms. Note that the MAX_CONNECTION_AGE option without jitter
+   would not create connection storms by itself, but if there happened to be a
+   connection storm it could cause it to repeat at a fixed period. */
+static grpc_millis
+add_random_max_connection_age_jitter_and_convert_to_grpc_millis(int value) {
+  /* generate a random number between 1 - MAX_CONNECTION_AGE_JITTER and
+     1 + MAX_CONNECTION_AGE_JITTER */
+  double multiplier = rand() * MAX_CONNECTION_AGE_JITTER * 2.0 / RAND_MAX +
+                      1.0 - MAX_CONNECTION_AGE_JITTER;
+  double result = multiplier * value;
+  /* INT_MAX - 0.5 converts the value to float, so that result will not be
+     cast to int implicitly before the comparison. */
+  return result > (static_cast<double>(GRPC_MILLIS_INF_FUTURE)) - 0.5
+             ? GRPC_MILLIS_INF_FUTURE
+             : static_cast<grpc_millis>(result);
+}
+
+/* Constructor for call_data. */
+static grpc_error* max_age_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* /*args*/) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  increase_call_count(chand);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data. */
+static void max_age_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  decrease_call_count(chand);
+}
+
+/* Constructor for channel_data. */
+static grpc_error* max_age_init_channel_elem(grpc_channel_element* elem,
+                                             grpc_channel_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  gpr_mu_init(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = false;
+  chand->max_age_grace_timer_pending = false;
+  chand->channel_stack = args->channel_stack;
+  chand->max_connection_age =
+      add_random_max_connection_age_jitter_and_convert_to_grpc_millis(
+          DEFAULT_MAX_CONNECTION_AGE_MS);
+  chand->max_connection_age_grace =
+      DEFAULT_MAX_CONNECTION_AGE_GRACE_MS == INT_MAX
+          ? GRPC_MILLIS_INF_FUTURE
+          : DEFAULT_MAX_CONNECTION_AGE_GRACE_MS;
+  chand->max_connection_idle = DEFAULT_MAX_CONNECTION_IDLE_MS == INT_MAX
+                                   ? GRPC_MILLIS_INF_FUTURE
+                                   : DEFAULT_MAX_CONNECTION_IDLE_MS;
+  chand->idle_state = MAX_IDLE_STATE_INIT;
+  gpr_atm_no_barrier_store(&chand->last_enter_idle_time_millis, GPR_ATM_MIN);
+  for (size_t i = 0; i < args->channel_args->num_args; ++i) {
+    if (0 == strcmp(args->channel_args->args[i].key,
+                    GRPC_ARG_MAX_CONNECTION_AGE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i], MAX_CONNECTION_AGE_INTEGER_OPTIONS);
+      chand->max_connection_age =
+          add_random_max_connection_age_jitter_and_convert_to_grpc_millis(
+              value);
+    } else if (0 == strcmp(args->channel_args->args[i].key,
+                           GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i],
+          {DEFAULT_MAX_CONNECTION_AGE_GRACE_MS, 0, INT_MAX});
+      chand->max_connection_age_grace =
+          value == INT_MAX ? GRPC_MILLIS_INF_FUTURE : value;
+    } else if (0 == strcmp(args->channel_args->args[i].key,
+                           GRPC_ARG_MAX_CONNECTION_IDLE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i], MAX_CONNECTION_IDLE_INTEGER_OPTIONS);
+      chand->max_connection_idle =
+          value == INT_MAX ? GRPC_MILLIS_INF_FUTURE : value;
+    }
+  }
+  GRPC_CLOSURE_INIT(&chand->max_idle_timer_cb, max_idle_timer_cb, chand,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&chand->close_max_age_channel, close_max_age_channel, chand,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&chand->force_close_max_age_channel,
+                    force_close_max_age_channel, chand,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&chand->start_max_idle_timer_after_init,
+                    start_max_idle_timer_after_init, chand,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&chand->start_max_age_timer_after_init,
+                    start_max_age_timer_after_init, chand,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&chand->start_max_age_grace_timer_after_goaway_op,
+                    start_max_age_grace_timer_after_goaway_op, chand,
+                    grpc_schedule_on_exec_ctx);
+
+  if (chand->max_connection_age != GRPC_MILLIS_INF_FUTURE) {
+    /* When the channel reaches its max age, we send down an op with
+       goaway_error set.  However, we can't send down any ops until after the
+       channel stack is fully initialized.  If we start the timer here, we have
+       no guarantee that the timer won't pop before channel stack initialization
+       is finished.  To avoid that problem, we create a closure to start the
+       timer, and we schedule that closure to be run after call stack
+       initialization is done. */
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_age_timer_after_init");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                            &chand->start_max_age_timer_after_init,
+                            GRPC_ERROR_NONE);
+  }
+
+  /* Initialize the number of calls as 1, so that the max_idle_timer will not
+     start until start_max_idle_timer_after_init is invoked. */
+  gpr_atm_rel_store(&chand->call_count, 1);
+  if (chand->max_connection_idle != GRPC_MILLIS_INF_FUTURE) {
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_idle_timer_after_init");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                            &chand->start_max_idle_timer_after_init,
+                            GRPC_ERROR_NONE);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel_data. */
+static void max_age_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  gpr_mu_destroy(&chand->max_age_timer_mu);
+}
+
+const grpc_channel_filter grpc_max_age_filter = {
+    grpc_call_next_op,
+    grpc_channel_next_op,
+    0, /* sizeof_call_data */
+    max_age_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    max_age_destroy_call_elem,
+    sizeof(channel_data),
+    max_age_init_channel_elem,
+    max_age_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "max_age"};
+
+static bool maybe_add_max_age_filter(grpc_channel_stack_builder* builder,
+                                     void* /*arg*/) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  bool enable =
+      grpc_channel_arg_get_integer(
+          grpc_channel_args_find(channel_args, GRPC_ARG_MAX_CONNECTION_AGE_MS),
+          MAX_CONNECTION_AGE_INTEGER_OPTIONS) != INT_MAX ||
+      grpc_channel_arg_get_integer(
+          grpc_channel_args_find(channel_args, GRPC_ARG_MAX_CONNECTION_IDLE_MS),
+          MAX_CONNECTION_IDLE_INTEGER_OPTIONS) != INT_MAX;
+  if (enable) {
+    return grpc_channel_stack_builder_prepend_filter(
+        builder, &grpc_max_age_filter, nullptr, nullptr);
+  } else {
+    return true;
+  }
+}
+
+void grpc_max_age_filter_init(void) {
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_max_age_filter, nullptr);
+}
+
+void grpc_max_age_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.h
new file mode 100644
index 0000000..9893222
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/max_age/max_age_filter.h	
@@ -0,0 +1,26 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_max_age_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_MAX_AGE_MAX_AGE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.cc
new file mode 100644
index 0000000..75f97d7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.cc	
@@ -0,0 +1,426 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/message_size/message_size_filter.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+
+static void recv_message_ready(void* user_data, grpc_error* error);
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* error);
+
+namespace grpc_core {
+
+namespace {
+size_t g_message_size_parser_index;
+}  // namespace
+
+std::unique_ptr<ServiceConfig::ParsedConfig>
+MessageSizeParser::ParsePerMethodParams(const Json& json, grpc_error** error) {
+  GPR_DEBUG_ASSERT(error != nullptr && *error == GRPC_ERROR_NONE);
+  std::vector<grpc_error*> error_list;
+  // Max request size.
+  int max_request_message_bytes = -1;
+  auto it = json.object_value().find("maxRequestMessageBytes");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::STRING &&
+        it->second.type() != Json::Type::NUMBER) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:maxRequestMessageBytes error:should be of type number"));
+    } else {
+      max_request_message_bytes =
+          gpr_parse_nonnegative_int(it->second.string_value().c_str());
+      if (max_request_message_bytes == -1) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:maxRequestMessageBytes error:should be non-negative"));
+      }
+    }
+  }
+  // Max response size.
+  int max_response_message_bytes = -1;
+  it = json.object_value().find("maxResponseMessageBytes");
+  if (it != json.object_value().end()) {
+    if (it->second.type() != Json::Type::STRING &&
+        it->second.type() != Json::Type::NUMBER) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "field:maxResponseMessageBytes error:should be of type number"));
+    } else {
+      max_response_message_bytes =
+          gpr_parse_nonnegative_int(it->second.string_value().c_str());
+      if (max_response_message_bytes == -1) {
+        error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "field:maxResponseMessageBytes error:should be non-negative"));
+      }
+    }
+  }
+  if (!error_list.empty()) {
+    *error = GRPC_ERROR_CREATE_FROM_VECTOR("Message size parser", &error_list);
+    return nullptr;
+  }
+  return absl::make_unique<MessageSizeParsedConfig>(max_request_message_bytes,
+                                                    max_response_message_bytes);
+}
+
+void MessageSizeParser::Register() {
+  g_message_size_parser_index =
+      ServiceConfig::RegisterParser(absl::make_unique<MessageSizeParser>());
+}
+
+size_t MessageSizeParser::ParserIndex() { return g_message_size_parser_index; }
+}  // namespace grpc_core
+
+namespace {
+struct channel_data {
+  grpc_core::MessageSizeParsedConfig::message_size_limits limits;
+  grpc_core::RefCountedPtr<grpc_core::ServiceConfig> svc_cfg;
+};
+
+struct call_data {
+  call_data(grpc_call_element* elem, const channel_data& chand,
+            const grpc_call_element_args& args)
+      : call_combiner(args.call_combiner), limits(chand.limits) {
+    GRPC_CLOSURE_INIT(&recv_message_ready, ::recv_message_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready,
+                      ::recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    // Get max sizes from channel data, then merge in per-method config values.
+    // Note: Per-method config is only available on the client, so we
+    // apply the max request size to the send limit and the max response
+    // size to the receive limit.
+    const grpc_core::MessageSizeParsedConfig* limits = nullptr;
+    grpc_core::ServiceConfig::CallData* svc_cfg_call_data = nullptr;
+    if (args.context != nullptr) {
+      svc_cfg_call_data = static_cast<grpc_core::ServiceConfig::CallData*>(
+          args.context[GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA].value);
+    }
+    if (svc_cfg_call_data != nullptr) {
+      limits = static_cast<const grpc_core::MessageSizeParsedConfig*>(
+          svc_cfg_call_data->GetMethodParsedConfig(
+              grpc_core::MessageSizeParser::ParserIndex()));
+    } else if (chand.svc_cfg != nullptr) {
+      const auto* objs_vector =
+          chand.svc_cfg->GetMethodParsedConfigVector(args.path);
+      if (objs_vector != nullptr) {
+        limits = static_cast<const grpc_core::MessageSizeParsedConfig*>(
+            (*objs_vector)[grpc_core::MessageSizeParser::ParserIndex()].get());
+      }
+    }
+    if (limits != nullptr) {
+      if (limits->limits().max_send_size >= 0 &&
+          (limits->limits().max_send_size < this->limits.max_send_size ||
+           this->limits.max_send_size < 0)) {
+        this->limits.max_send_size = limits->limits().max_send_size;
+      }
+      if (limits->limits().max_recv_size >= 0 &&
+          (limits->limits().max_recv_size < this->limits.max_recv_size ||
+           this->limits.max_recv_size < 0)) {
+        this->limits.max_recv_size = limits->limits().max_recv_size;
+      }
+    }
+  }
+
+  ~call_data() { GRPC_ERROR_UNREF(error); }
+
+  grpc_core::CallCombiner* call_combiner;
+  grpc_core::MessageSizeParsedConfig::message_size_limits limits;
+  // Receive closures are chained: we inject this closure as the
+  // recv_message_ready up-call on transport_stream_op, and remember to
+  // call our next_recv_message_ready member after handling it.
+  grpc_closure recv_message_ready;
+  grpc_closure recv_trailing_metadata_ready;
+  // The error caused by a message that is too large, or GRPC_ERROR_NONE
+  grpc_error* error = GRPC_ERROR_NONE;
+  // Used by recv_message_ready.
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message = nullptr;
+  // Original recv_message_ready callback, invoked after our own.
+  grpc_closure* next_recv_message_ready = nullptr;
+  // Original recv_trailing_metadata callback, invoked after our own.
+  grpc_closure* original_recv_trailing_metadata_ready;
+  bool seen_recv_trailing_metadata = false;
+  grpc_error* recv_trailing_metadata_error;
+};
+
+}  // namespace
+
+// Callback invoked when we receive a message.  Here we check the max
+// receive message size.
+static void recv_message_ready(void* user_data, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (*calld->recv_message != nullptr && calld->limits.max_recv_size >= 0 &&
+      (*calld->recv_message)->length() >
+          static_cast<size_t>(calld->limits.max_recv_size)) {
+    char* message_string;
+    gpr_asprintf(&message_string,
+                 "Received message larger than max (%u vs. %d)",
+                 (*calld->recv_message)->length(), calld->limits.max_recv_size);
+    grpc_error* new_error = grpc_error_set_int(
+        GRPC_ERROR_CREATE_FROM_COPIED_STRING(message_string),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED);
+    GRPC_ERROR_UNREF(calld->error);
+    if (error == GRPC_ERROR_NONE) {
+      error = new_error;
+    } else {
+      error = grpc_error_add_child(error, new_error);
+    }
+    calld->error = GRPC_ERROR_REF(error);
+    gpr_free(message_string);
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  // Invoke the next callback.
+  grpc_closure* closure = calld->next_recv_message_ready;
+  calld->next_recv_message_ready = nullptr;
+  if (calld->seen_recv_trailing_metadata) {
+    /* We might potentially see another RECV_MESSAGE op. In that case, we do not
+     * want to run the recv_trailing_metadata_ready closure again. The newer
+     * RECV_MESSAGE op cannot cause any errors since the transport has already
+     * invoked the recv_trailing_metadata_ready closure and all further
+     * RECV_MESSAGE ops will get null payloads. */
+    calld->seen_recv_trailing_metadata = false;
+    GRPC_CALL_COMBINER_START(calld->call_combiner,
+                             &calld->recv_trailing_metadata_ready,
+                             calld->recv_trailing_metadata_error,
+                             "continue recv_trailing_metadata_ready");
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, closure, error);
+}
+
+// Callback invoked on completion of recv_trailing_metadata
+// Notifies the recv_trailing_metadata batch of any message size failures
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->next_recv_message_ready != nullptr) {
+    calld->seen_recv_trailing_metadata = true;
+    calld->recv_trailing_metadata_error = GRPC_ERROR_REF(error);
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner,
+                            "deferring recv_trailing_metadata_ready until "
+                            "after recv_message_ready");
+    return;
+  }
+  error =
+      grpc_error_add_child(GRPC_ERROR_REF(error), GRPC_ERROR_REF(calld->error));
+  // Invoke the next callback.
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_trailing_metadata_ready, error);
+}
+
+// Start transport stream op.
+static void message_size_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // Check max send message size.
+  if (op->send_message && calld->limits.max_send_size >= 0 &&
+      op->payload->send_message.send_message->length() >
+          static_cast<size_t>(calld->limits.max_send_size)) {
+    char* message_string;
+    gpr_asprintf(&message_string, "Sent message larger than max (%u vs. %d)",
+                 op->payload->send_message.send_message->length(),
+                 calld->limits.max_send_size);
+    grpc_transport_stream_op_batch_finish_with_failure(
+        op,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(message_string),
+                           GRPC_ERROR_INT_GRPC_STATUS,
+                           GRPC_STATUS_RESOURCE_EXHAUSTED),
+        calld->call_combiner);
+    gpr_free(message_string);
+    return;
+  }
+  // Inject callback for receiving a message.
+  if (op->recv_message) {
+    calld->next_recv_message_ready =
+        op->payload->recv_message.recv_message_ready;
+    calld->recv_message = op->payload->recv_message.recv_message;
+    op->payload->recv_message.recv_message_ready = &calld->recv_message_ready;
+  }
+  // Inject callback for receiving trailing metadata.
+  if (op->recv_trailing_metadata) {
+    calld->original_recv_trailing_metadata_ready =
+        op->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    op->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &calld->recv_trailing_metadata_ready;
+  }
+  // Chain to the next filter.
+  grpc_call_next_op(elem, op);
+}
+
+// Constructor for call_data.
+static grpc_error* message_size_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  new (elem->call_data) call_data(elem, *chand, *args);
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for call_data.
+static void message_size_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  call_data* calld = (call_data*)elem->call_data;
+  calld->~call_data();
+}
+
+static int default_size(const grpc_channel_args* args,
+                        int without_minimal_stack) {
+  if (grpc_channel_args_want_minimal_stack(args)) {
+    return -1;
+  }
+  return without_minimal_stack;
+}
+
+grpc_core::MessageSizeParsedConfig::message_size_limits get_message_size_limits(
+    const grpc_channel_args* channel_args) {
+  grpc_core::MessageSizeParsedConfig::message_size_limits lim;
+  lim.max_send_size =
+      default_size(channel_args, GRPC_DEFAULT_MAX_SEND_MESSAGE_LENGTH);
+  lim.max_recv_size =
+      default_size(channel_args, GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH);
+  for (size_t i = 0; i < channel_args->num_args; ++i) {
+    if (strcmp(channel_args->args[i].key, GRPC_ARG_MAX_SEND_MESSAGE_LENGTH) ==
+        0) {
+      const grpc_integer_options options = {lim.max_send_size, -1, INT_MAX};
+      lim.max_send_size =
+          grpc_channel_arg_get_integer(&channel_args->args[i], options);
+    }
+    if (strcmp(channel_args->args[i].key,
+               GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH) == 0) {
+      const grpc_integer_options options = {lim.max_recv_size, -1, INT_MAX};
+      lim.max_recv_size =
+          grpc_channel_arg_get_integer(&channel_args->args[i], options);
+    }
+  }
+  return lim;
+}
+
+// Constructor for channel_data.
+static grpc_error* message_size_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  GPR_ASSERT(!args->is_last);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  new (chand) channel_data();
+  chand->limits = get_message_size_limits(args->channel_args);
+  // TODO(yashykt): We only need to read GRPC_ARG_SERVICE_CONFIG in the case of
+  // direct channels. (Service config is otherwise stored in the call_context by
+  // client_channel filter.) If we ever need a second filter that also needs to
+  // parse GRPC_ARG_SERVICE_CONFIG, we should refactor this code and add a
+  // separate filter that reads GRPC_ARG_SERVICE_CONFIG and saves the parsed
+  // config in the call_context.
+  const grpc_arg* channel_arg =
+      grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVICE_CONFIG);
+  const char* service_config_str = grpc_channel_arg_get_string(channel_arg);
+  if (service_config_str != nullptr) {
+    grpc_error* service_config_error = GRPC_ERROR_NONE;
+    auto svc_cfg = grpc_core::ServiceConfig::Create(service_config_str,
+                                                    &service_config_error);
+    if (service_config_error == GRPC_ERROR_NONE) {
+      chand->svc_cfg = std::move(svc_cfg);
+    } else {
+      gpr_log(GPR_ERROR, "%s", grpc_error_string(service_config_error));
+    }
+    GRPC_ERROR_UNREF(service_config_error);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for channel_data.
+static void message_size_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  chand->~channel_data();
+}
+
+const grpc_channel_filter grpc_message_size_filter = {
+    message_size_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    message_size_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    message_size_destroy_call_elem,
+    sizeof(channel_data),
+    message_size_init_channel_elem,
+    message_size_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "message_size"};
+
+// Used for GRPC_CLIENT_SUBCHANNEL
+static bool maybe_add_message_size_filter_subchannel(
+    grpc_channel_stack_builder* builder, void* /*arg*/) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  if (grpc_channel_args_want_minimal_stack(channel_args)) {
+    return true;
+  }
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, &grpc_message_size_filter, nullptr, nullptr);
+}
+
+// Used for GRPC_CLIENT_DIRECT_CHANNEL and GRPC_SERVER_CHANNEL. Adds the filter
+// only if message size limits or service config is specified.
+static bool maybe_add_message_size_filter(grpc_channel_stack_builder* builder,
+                                          void* /*arg*/) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  bool enable = false;
+  grpc_core::MessageSizeParsedConfig::message_size_limits lim =
+      get_message_size_limits(channel_args);
+  if (lim.max_send_size != -1 || lim.max_recv_size != -1) {
+    enable = true;
+  }
+  const grpc_arg* a =
+      grpc_channel_args_find(channel_args, GRPC_ARG_SERVICE_CONFIG);
+  const char* svc_cfg_str = grpc_channel_arg_get_string(a);
+  if (svc_cfg_str != nullptr) {
+    enable = true;
+  }
+  if (enable) {
+    return grpc_channel_stack_builder_prepend_filter(
+        builder, &grpc_message_size_filter, nullptr, nullptr);
+  } else {
+    return true;
+  }
+}
+
+void grpc_message_size_filter_init(void) {
+  grpc_channel_init_register_stage(
+      GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+      maybe_add_message_size_filter_subchannel, nullptr);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_message_size_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   maybe_add_message_size_filter, nullptr);
+  grpc_core::MessageSizeParser::Register();
+}
+
+void grpc_message_size_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.h
new file mode 100644
index 0000000..58c1fac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/message_size/message_size_filter.h	
@@ -0,0 +1,59 @@
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/service_config.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_message_size_filter;
+
+namespace grpc_core {
+
+class MessageSizeParsedConfig : public ServiceConfig::ParsedConfig {
+ public:
+  struct message_size_limits {
+    int max_send_size;
+    int max_recv_size;
+  };
+
+  MessageSizeParsedConfig(int max_send_size, int max_recv_size) {
+    limits_.max_send_size = max_send_size;
+    limits_.max_recv_size = max_recv_size;
+  }
+
+  const message_size_limits& limits() const { return limits_; }
+
+ private:
+  message_size_limits limits_;
+};
+
+class MessageSizeParser : public ServiceConfig::Parser {
+ public:
+  std::unique_ptr<ServiceConfig::ParsedConfig> ParsePerMethodParams(
+      const Json& json, grpc_error** error) override;
+
+  static void Register();
+
+  static size_t ParserIndex();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_FILTERS_MESSAGE_SIZE_MESSAGE_SIZE_FILTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.cc
new file mode 100644
index 0000000..7f9a4fc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.cc	
@@ -0,0 +1,210 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/ext/filters/workarounds/workaround_utils.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/metadata.h"
+
+namespace {
+struct call_data {
+  // Receive closures are chained: we inject this closure as the
+  // recv_initial_metadata_ready up-call on transport_stream_op, and remember to
+  // call our next_recv_initial_metadata_ready member after handling it.
+  grpc_closure recv_initial_metadata_ready;
+  // Used by recv_initial_metadata_ready.
+  grpc_metadata_batch* recv_initial_metadata;
+  // Original recv_initial_metadata_ready callback, invoked after our own.
+  grpc_closure* next_recv_initial_metadata_ready;
+
+  // Marks whether the workaround is active
+  bool workaround_active;
+};
+}  // namespace
+
+// Find the user agent metadata element in the batch
+static bool get_user_agent_mdelem(const grpc_metadata_batch* batch,
+                                  grpc_mdelem* md) {
+  if (batch->idx.named.user_agent != nullptr) {
+    *md = batch->idx.named.user_agent->md;
+    return true;
+  }
+  return false;
+}
+
+// Callback invoked when we receive an initial metadata.
+static void recv_initial_metadata_ready(void* user_data, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+
+  if (GRPC_ERROR_NONE == error) {
+    grpc_mdelem md;
+    if (get_user_agent_mdelem(calld->recv_initial_metadata, &md)) {
+      grpc_workaround_user_agent_md* user_agent_md = grpc_parse_user_agent(md);
+      if (user_agent_md
+              ->workaround_active[GRPC_WORKAROUND_ID_CRONET_COMPRESSION]) {
+        calld->workaround_active = true;
+      }
+    }
+  }
+
+  // Invoke the next callback.
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->next_recv_initial_metadata_ready,
+                          GRPC_ERROR_REF(error));
+}
+
+// Start transport stream op.
+static void cronet_compression_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+
+  // Inject callback for receiving initial metadata
+  if (op->recv_initial_metadata) {
+    calld->next_recv_initial_metadata_ready =
+        op->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    op->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->recv_initial_metadata_ready;
+    calld->recv_initial_metadata =
+        op->payload->recv_initial_metadata.recv_initial_metadata;
+  }
+
+  if (op->send_message) {
+    /* Send message happens after client's user-agent (initial metadata) is
+     * received, so workaround_active must be set already */
+    if (calld->workaround_active) {
+      op->payload->send_message.send_message->set_flags(
+          op->payload->send_message.send_message->flags() |
+          GRPC_WRITE_NO_COMPRESS);
+    }
+  }
+
+  // Chain to the next filter.
+  grpc_call_next_op(elem, op);
+}
+
+// Constructor for call_data.
+static grpc_error* cronet_compression_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* /*args*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->next_recv_initial_metadata_ready = nullptr;
+  calld->workaround_active = false;
+  GRPC_CLOSURE_INIT(&calld->recv_initial_metadata_ready,
+                    recv_initial_metadata_ready, elem,
+                    grpc_schedule_on_exec_ctx);
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for call_data.
+static void cronet_compression_destroy_call_elem(
+    grpc_call_element* /*elem*/, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {}
+
+// Constructor for channel_data.
+static grpc_error* cronet_compression_init_channel_elem(
+    grpc_channel_element* /*elem*/, grpc_channel_element_args* /*args*/) {
+  return GRPC_ERROR_NONE;
+}
+
+// Destructor for channel_data.
+static void cronet_compression_destroy_channel_elem(
+    grpc_channel_element* /*elem*/) {}
+
+// Parse the user agent
+static bool parse_user_agent(grpc_mdelem md) {
+  const char grpc_objc_specifier[] = "grpc-objc/";
+  const size_t grpc_objc_specifier_len = sizeof(grpc_objc_specifier) - 1;
+  const char cronet_specifier[] = "cronet_http";
+  const size_t cronet_specifier_len = sizeof(cronet_specifier) - 1;
+
+  char* user_agent_str = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+  bool grpc_objc_specifier_seen = false;
+  bool cronet_specifier_seen = false;
+  char *major_version_str = user_agent_str, *minor_version_str;
+  long major_version = 0, minor_version = 0;
+
+  char* head = strtok(user_agent_str, " ");
+  while (head != nullptr) {
+    if (!grpc_objc_specifier_seen &&
+        0 == strncmp(head, grpc_objc_specifier, grpc_objc_specifier_len)) {
+      major_version_str = head + grpc_objc_specifier_len;
+      grpc_objc_specifier_seen = true;
+    } else if (grpc_objc_specifier_seen &&
+               0 == strncmp(head, cronet_specifier, cronet_specifier_len)) {
+      cronet_specifier_seen = true;
+      break;
+    }
+
+    head = strtok(nullptr, " ");
+  }
+  if (grpc_objc_specifier_seen) {
+    major_version_str = strtok(major_version_str, ".");
+    minor_version_str = strtok(nullptr, ".");
+    major_version = atol(major_version_str);
+    minor_version = atol(minor_version_str);
+  }
+
+  gpr_free(user_agent_str);
+  return (grpc_objc_specifier_seen && cronet_specifier_seen &&
+          (major_version < 1 || (major_version == 1 && minor_version <= 3)));
+}
+
+const grpc_channel_filter grpc_workaround_cronet_compression_filter = {
+    cronet_compression_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    cronet_compression_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    cronet_compression_destroy_call_elem,
+    0,
+    cronet_compression_init_channel_elem,
+    cronet_compression_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "workaround_cronet_compression"};
+
+static bool register_workaround_cronet_compression(
+    grpc_channel_stack_builder* builder, void* /*arg*/) {
+  const grpc_channel_args* channel_args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  const grpc_arg* a = grpc_channel_args_find(
+      channel_args, GRPC_ARG_WORKAROUND_CRONET_COMPRESSION);
+  if (a == nullptr) {
+    return true;
+  }
+  if (grpc_channel_arg_get_bool(a, false) == false) {
+    return true;
+  }
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, &grpc_workaround_cronet_compression_filter, nullptr, nullptr);
+}
+
+void grpc_workaround_cronet_compression_filter_init(void) {
+  grpc_channel_init_register_stage(
+      GRPC_SERVER_CHANNEL, GRPC_WORKAROUND_PRIORITY_HIGH,
+      register_workaround_cronet_compression, nullptr);
+  grpc_register_workaround(GRPC_WORKAROUND_ID_CRONET_COMPRESSION,
+                           parse_user_agent);
+}
+
+void grpc_workaround_cronet_compression_filter_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h
new file mode 100644
index 0000000..94d20f0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.h	
@@ -0,0 +1,27 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_workaround_cronet_compression_filter;
+
+#endif /* GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_CRONET_COMPRESSION_FILTER_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.cc
new file mode 100644
index 0000000..4dabe89
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.cc	
@@ -0,0 +1,53 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/workarounds/workaround_utils.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+user_agent_parser ua_parser[GRPC_MAX_WORKAROUND_ID];
+
+static void destroy_user_agent_md(void* user_agent_md) {
+  gpr_free(user_agent_md);
+}
+
+grpc_workaround_user_agent_md* grpc_parse_user_agent(grpc_mdelem md) {
+  grpc_workaround_user_agent_md* user_agent_md =
+      static_cast<grpc_workaround_user_agent_md*>(
+          grpc_mdelem_get_user_data(md, destroy_user_agent_md));
+
+  if (nullptr != user_agent_md) {
+    return user_agent_md;
+  }
+  user_agent_md = static_cast<grpc_workaround_user_agent_md*>(
+      gpr_malloc(sizeof(grpc_workaround_user_agent_md)));
+  for (int i = 0; i < GRPC_MAX_WORKAROUND_ID; i++) {
+    if (ua_parser[i]) {
+      user_agent_md->workaround_active[i] = ua_parser[i](md);
+    }
+  }
+  grpc_mdelem_set_user_data(md, destroy_user_agent_md, (void*)user_agent_md);
+
+  return user_agent_md;
+}
+
+void grpc_register_workaround(uint32_t id, user_agent_parser parser) {
+  GPR_ASSERT(id < GRPC_MAX_WORKAROUND_ID);
+  ua_parser[id] = parser;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.h
new file mode 100644
index 0000000..f172ccc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/filters/workarounds/workaround_utils.h	
@@ -0,0 +1,39 @@
+//
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H
+#define GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/workaround_list.h>
+
+#include "src/core/lib/transport/metadata.h"
+
+#define GRPC_WORKAROUND_PRIORITY_HIGH 10001
+#define GRPC_WORKAROUND_PROIRITY_LOW 9999
+
+typedef struct grpc_workaround_user_agent_md {
+  bool workaround_active[GRPC_MAX_WORKAROUND_ID];
+} grpc_workaround_user_agent_md;
+
+grpc_workaround_user_agent_md* grpc_parse_user_agent(grpc_mdelem md);
+
+typedef bool (*user_agent_parser)(grpc_mdelem);
+
+void grpc_register_workaround(uint32_t id, user_agent_parser parser);
+
+#endif /* GRPC_CORE_EXT_FILTERS_WORKAROUNDS_WORKAROUND_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.cc
new file mode 100644
index 0000000..1fdab76
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.cc	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include "src/core/ext/transport/chttp2/alpn/alpn.h"
+
+#include "src/core/lib/gpr/useful.h"
+
+/* in order of preference */
+static const char* const supported_versions[] = {"grpc-exp", "h2"};
+
+int grpc_chttp2_is_alpn_version_supported(const char* version, size_t size) {
+  size_t i;
+  for (i = 0; i < GPR_ARRAY_SIZE(supported_versions); i++) {
+    if (!strncmp(version, supported_versions[i], size)) return 1;
+  }
+  return 0;
+}
+
+size_t grpc_chttp2_num_alpn_versions(void) {
+  return GPR_ARRAY_SIZE(supported_versions);
+}
+
+const char* grpc_chttp2_get_alpn_version_index(size_t i) {
+  GPR_ASSERT(i < GPR_ARRAY_SIZE(supported_versions));
+  return supported_versions[i];
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.h
new file mode 100644
index 0000000..e2ffe4e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/alpn/alpn.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+/* Returns 1 if the version is supported, 0 otherwise. */
+int grpc_chttp2_is_alpn_version_supported(const char* version, size_t size);
+
+/* Returns the number of protocol versions to advertise */
+size_t grpc_chttp2_num_alpn_versions(void);
+
+/* Returns the protocol version at index i (0 <= i <
+ * grpc_chttp2_num_alpn_versions()) */
+const char* grpc_chttp2_get_alpn_version_index(size_t i);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_ALPN_ALPN_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.cc
new file mode 100644
index 0000000..bad3153
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.cc	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/client/authority.h"
+
+grpc_channel_args* grpc_default_authority_add_if_not_present(
+    const grpc_channel_args* args) {
+  const bool has_default_authority =
+      grpc_channel_args_find(args, GRPC_ARG_DEFAULT_AUTHORITY) != nullptr;
+  grpc_arg new_args[1];
+  size_t num_new_args = 0;
+  grpc_core::UniquePtr<char> default_authority;
+  if (!has_default_authority) {
+    const grpc_arg* server_uri_arg =
+        grpc_channel_args_find(args, GRPC_ARG_SERVER_URI);
+    const char* server_uri_str = grpc_channel_arg_get_string(server_uri_arg);
+    GPR_ASSERT(server_uri_str != nullptr);
+    default_authority =
+        grpc_core::ResolverRegistry::GetDefaultAuthority(server_uri_str);
+    GPR_ASSERT(default_authority != nullptr);
+    new_args[num_new_args++] = grpc_channel_arg_string_create(
+        const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), default_authority.get());
+  }
+  return grpc_channel_args_copy_and_add(args, new_args, num_new_args);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.h
new file mode 100644
index 0000000..642584e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/authority.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/memory.h"
+
+/// Returns a copy of \a args with the default authority channel arg set if it
+/// wasn't already present.
+grpc_channel_args* grpc_default_authority_add_if_not_present(
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_AUTHORITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.cc
new file mode 100644
index 0000000..b5593cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.cc	
@@ -0,0 +1,206 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
+
+#include <grpc/grpc.h>
+
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/connector.h"
+#include "src/core/ext/filters/client_channel/http_connect_handshaker.h"
+#include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+Chttp2Connector::Chttp2Connector() {
+  GRPC_CLOSURE_INIT(&connected_, Connected, this, grpc_schedule_on_exec_ctx);
+}
+
+Chttp2Connector::~Chttp2Connector() {
+  if (endpoint_ != nullptr) grpc_endpoint_destroy(endpoint_);
+}
+
+void Chttp2Connector::Connect(const Args& args, Result* result,
+                              grpc_closure* notify) {
+  grpc_resolved_address addr;
+  Subchannel::GetAddressFromSubchannelAddressArg(args.channel_args, &addr);
+  grpc_endpoint** ep;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(notify_ == nullptr);
+    args_ = args;
+    result_ = result;
+    notify_ = notify;
+    GPR_ASSERT(!connecting_);
+    connecting_ = true;
+    GPR_ASSERT(endpoint_ == nullptr);
+    ep = &endpoint_;
+  }
+  // In some implementations, the closure can be flushed before
+  // grpc_tcp_client_connect() returns, and since the closure requires access
+  // to mu_, this can result in a deadlock (see
+  // https://github.com/grpc/grpc/issues/16427 for details).
+  // grpc_tcp_client_connect() will fill endpoint_ with proper contents, and we
+  // make sure that we still exist at that point by taking a ref.
+  Ref().release();  // Ref held by callback.
+  grpc_tcp_client_connect(&connected_, ep, args.interested_parties,
+                          args.channel_args, &addr, args.deadline);
+}
+
+void Chttp2Connector::Shutdown(grpc_error* error) {
+  MutexLock lock(&mu_);
+  shutdown_ = true;
+  if (handshake_mgr_ != nullptr) {
+    handshake_mgr_->Shutdown(GRPC_ERROR_REF(error));
+  }
+  // If handshaking is not yet in progress, shutdown the endpoint.
+  // Otherwise, the handshaker will do this for us.
+  if (!connecting_ && endpoint_ != nullptr) {
+    grpc_endpoint_shutdown(endpoint_, GRPC_ERROR_REF(error));
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void Chttp2Connector::Connected(void* arg, grpc_error* error) {
+  Chttp2Connector* self = static_cast<Chttp2Connector*>(arg);
+  bool unref = false;
+  {
+    MutexLock lock(&self->mu_);
+    GPR_ASSERT(self->connecting_);
+    self->connecting_ = false;
+    if (error != GRPC_ERROR_NONE || self->shutdown_) {
+      if (error == GRPC_ERROR_NONE) {
+        error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("connector shutdown");
+      } else {
+        error = GRPC_ERROR_REF(error);
+      }
+      if (self->endpoint_ != nullptr) {
+        grpc_endpoint_shutdown(self->endpoint_, GRPC_ERROR_REF(error));
+      }
+      self->result_->Reset();
+      grpc_closure* notify = self->notify_;
+      self->notify_ = nullptr;
+      ExecCtx::Run(DEBUG_LOCATION, notify, error);
+      unref = true;
+    } else {
+      GPR_ASSERT(self->endpoint_ != nullptr);
+      self->StartHandshakeLocked();
+    }
+  }
+  if (unref) self->Unref();
+}
+
+void Chttp2Connector::StartHandshakeLocked() {
+  handshake_mgr_ = MakeRefCounted<HandshakeManager>();
+  HandshakerRegistry::AddHandshakers(HANDSHAKER_CLIENT, args_.channel_args,
+                                     args_.interested_parties,
+                                     handshake_mgr_.get());
+  grpc_endpoint_add_to_pollset_set(endpoint_, args_.interested_parties);
+  handshake_mgr_->DoHandshake(endpoint_, args_.channel_args, args_.deadline,
+                              nullptr /* acceptor */, OnHandshakeDone, this);
+  endpoint_ = nullptr;  // Endpoint handed off to handshake manager.
+}
+
+void Chttp2Connector::OnHandshakeDone(void* arg, grpc_error* error) {
+  auto* args = static_cast<HandshakerArgs*>(arg);
+  Chttp2Connector* self = static_cast<Chttp2Connector*>(args->user_data);
+  {
+    MutexLock lock(&self->mu_);
+    if (error != GRPC_ERROR_NONE || self->shutdown_) {
+      if (error == GRPC_ERROR_NONE) {
+        error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("connector shutdown");
+        // We were shut down after handshaking completed successfully, so
+        // destroy the endpoint here.
+        if (args->endpoint != nullptr) {
+          // TODO(ctiller): It is currently necessary to shutdown endpoints
+          // before destroying them, even if we know that there are no
+          // pending read/write callbacks.  This should be fixed, at which
+          // point this can be removed.
+          grpc_endpoint_shutdown(args->endpoint, GRPC_ERROR_REF(error));
+          grpc_endpoint_destroy(args->endpoint);
+          grpc_channel_args_destroy(args->args);
+          grpc_slice_buffer_destroy_internal(args->read_buffer);
+          gpr_free(args->read_buffer);
+        }
+      } else {
+        error = GRPC_ERROR_REF(error);
+      }
+      self->result_->Reset();
+    } else if (args->endpoint != nullptr) {
+      grpc_endpoint_delete_from_pollset_set(args->endpoint,
+                                            self->args_.interested_parties);
+      self->result_->transport =
+          grpc_create_chttp2_transport(args->args, args->endpoint, true);
+      self->result_->socket_node =
+          grpc_chttp2_transport_get_socket_node(self->result_->transport);
+      GPR_ASSERT(self->result_->transport != nullptr);
+      // TODO(roth): We ideally want to wait until we receive HTTP/2
+      // settings from the server before we consider the connection
+      // established.  If that doesn't happen before the connection
+      // timeout expires, then we should consider the connection attempt a
+      // failure and feed that information back into the backoff code.
+      // We could pass a notify_on_receive_settings callback to
+      // grpc_chttp2_transport_start_reading() to let us know when
+      // settings are received, but we would need to figure out how to use
+      // that information here.
+      //
+      // Unfortunately, we don't currently have a way to split apart the two
+      // effects of scheduling c->notify: we start sending RPCs immediately
+      // (which we want to do) and we consider the connection attempt successful
+      // (which we don't want to do until we get the notify_on_receive_settings
+      // callback from the transport).  If we could split those things
+      // apart, then we could start sending RPCs but then wait for our
+      // timeout before deciding if the connection attempt is successful.
+      // If the attempt is not successful, then we would tear down the
+      // transport and feed the failure back into the backoff code.
+      //
+      // In addition, even if we did that, we would probably not want to do
+      // so until after transparent retries is implemented.  Otherwise, any
+      // RPC that we attempt to send on the connection before the timeout
+      // would fail instead of being retried on a subsequent attempt.
+      grpc_chttp2_transport_start_reading(self->result_->transport,
+                                          args->read_buffer, nullptr);
+      self->result_->channel_args = args->args;
+    } else {
+      // If the handshaking succeeded but there is no endpoint, then the
+      // handshaker may have handed off the connection to some external
+      // code. Just verify that exit_early flag is set.
+      GPR_DEBUG_ASSERT(args->exit_early);
+    }
+    grpc_closure* notify = self->notify_;
+    self->notify_ = nullptr;
+    ExecCtx::Run(DEBUG_LOCATION, notify, error);
+    self->handshake_mgr_.reset();
+  }
+  self->Unref();
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.h
new file mode 100644
index 0000000..1ecd172
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/chttp2_connector.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/connector.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+
+namespace grpc_core {
+
+class Chttp2Connector : public SubchannelConnector {
+ public:
+  Chttp2Connector();
+  ~Chttp2Connector();
+
+  void Connect(const Args& args, Result* result, grpc_closure* notify) override;
+  void Shutdown(grpc_error* error) override;
+
+ private:
+  static void Connected(void* arg, grpc_error* error);
+  void StartHandshakeLocked();
+  static void OnHandshakeDone(void* arg, grpc_error* error);
+
+  Mutex mu_;
+  Args args_;
+  Result* result_ = nullptr;
+  grpc_closure* notify_ = nullptr;
+  bool shutdown_ = false;
+  bool connecting_ = false;
+  // Holds the endpoint when first created before being handed off to
+  // the handshake manager.
+  grpc_endpoint* endpoint_ = nullptr;
+  grpc_closure connected_;
+  RefCountedPtr<HandshakeManager> handshake_mgr_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create.cc
new file mode 100644
index 0000000..189ed7d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create.cc	
@@ -0,0 +1,112 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/transport/chttp2/client/authority.h"
+#include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+
+namespace grpc_core {
+
+class Chttp2InsecureClientChannelFactory : public ClientChannelFactory {
+ public:
+  Subchannel* CreateSubchannel(const grpc_channel_args* args) override {
+    grpc_channel_args* new_args =
+        grpc_default_authority_add_if_not_present(args);
+    Subchannel* s =
+        Subchannel::Create(MakeOrphanable<Chttp2Connector>(), new_args);
+    grpc_channel_args_destroy(new_args);
+    return s;
+  }
+};
+
+namespace {
+
+grpc_channel* CreateChannel(const char* target, const grpc_channel_args* args) {
+  if (target == nullptr) {
+    gpr_log(GPR_ERROR, "cannot create channel with NULL target name");
+    return nullptr;
+  }
+  // Add channel arg containing the server URI.
+  grpc_core::UniquePtr<char> canonical_target =
+      ResolverRegistry::AddDefaultPrefixIfNeeded(target);
+  grpc_arg arg = grpc_channel_arg_string_create(
+      const_cast<char*>(GRPC_ARG_SERVER_URI), canonical_target.get());
+  const char* to_remove[] = {GRPC_ARG_SERVER_URI};
+  grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1);
+  grpc_channel* channel =
+      grpc_channel_create(target, new_args, GRPC_CLIENT_CHANNEL, nullptr);
+  grpc_channel_args_destroy(new_args);
+  return channel;
+}
+
+}  // namespace
+
+}  // namespace grpc_core
+
+namespace {
+
+grpc_core::Chttp2InsecureClientChannelFactory* g_factory;
+gpr_once g_factory_once = GPR_ONCE_INIT;
+
+void FactoryInit() {
+  g_factory = new grpc_core::Chttp2InsecureClientChannelFactory();
+}
+
+}  // namespace
+
+/* Create a client channel:
+   Asynchronously: - resolve target
+                   - connect to it (trying alternatives as presented)
+                   - perform handshakes */
+grpc_channel* grpc_insecure_channel_create(const char* target,
+                                           const grpc_channel_args* args,
+                                           void* reserved) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE(
+      "grpc_insecure_channel_create(target=%s, args=%p, reserved=%p)", 3,
+      (target, args, reserved));
+  GPR_ASSERT(reserved == nullptr);
+  // Add channel arg containing the client channel factory.
+  gpr_once_init(&g_factory_once, FactoryInit);
+  grpc_arg arg = grpc_core::ClientChannelFactory::CreateChannelArg(g_factory);
+  const char* arg_to_remove = arg.key;
+  grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+      args, &arg_to_remove, 1, &arg, 1);
+  // Create channel.
+  grpc_channel* channel = grpc_core::CreateChannel(target, new_args);
+  // Clean up.
+  grpc_channel_args_destroy(new_args);
+  return channel != nullptr ? channel
+                            : grpc_lame_client_channel_create(
+                                  target, GRPC_STATUS_INTERNAL,
+                                  "Failed to create client channel");
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.cc
new file mode 100644
index 0000000..5bdcb38
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.cc	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_posix.h>
+#include <grpc/support/log.h>
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+#include <fcntl.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/tcp_client_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/transport.h"
+
+grpc_channel* grpc_insecure_channel_create_from_fd(
+    const char* target, int fd, const grpc_channel_args* args) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE("grpc_insecure_channel_create(target=%p, fd=%d, args=%p)", 3,
+                 (target, fd, args));
+
+  grpc_arg default_authority_arg = grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_DEFAULT_AUTHORITY, (char*)"test.authority");
+  grpc_channel_args* final_args =
+      grpc_channel_args_copy_and_add(args, &default_authority_arg, 1);
+
+  int flags = fcntl(fd, F_GETFL, 0);
+  GPR_ASSERT(fcntl(fd, F_SETFL, flags | O_NONBLOCK) == 0);
+
+  grpc_endpoint* client = grpc_tcp_client_create_from_fd(
+      grpc_fd_create(fd, "client", true), args, "fd-client");
+
+  grpc_transport* transport =
+      grpc_create_chttp2_transport(final_args, client, true);
+  GPR_ASSERT(transport);
+  grpc_channel* channel = grpc_channel_create(
+      target, final_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
+  grpc_channel_args_destroy(final_args);
+  grpc_chttp2_transport_start_reading(transport, nullptr, nullptr);
+
+  grpc_core::ExecCtx::Get()->Flush();
+
+  return channel != nullptr ? channel
+                            : grpc_lame_client_channel_create(
+                                  target, GRPC_STATUS_INTERNAL,
+                                  "Failed to create client channel");
+}
+
+#else  // !GPR_SUPPORT_CHANNELS_FROM_FD
+
+grpc_channel* grpc_insecure_channel_create_from_fd(
+    const char* target, int fd, const grpc_channel_args* args) {
+  GPR_ASSERT(0);
+  return nullptr;
+}
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc
new file mode 100644
index 0000000..33aa0cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc	
@@ -0,0 +1,225 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+#include "src/core/lib/slice/slice_hash_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+
+class Chttp2SecureClientChannelFactory : public ClientChannelFactory {
+ public:
+  Subchannel* CreateSubchannel(const grpc_channel_args* args) override {
+    grpc_channel_args* new_args = GetSecureNamingChannelArgs(args);
+    if (new_args == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Failed to create channel args during subchannel creation.");
+      return nullptr;
+    }
+    Subchannel* s =
+        Subchannel::Create(MakeOrphanable<Chttp2Connector>(), new_args);
+    grpc_channel_args_destroy(new_args);
+    return s;
+  }
+
+ private:
+  static grpc_channel_args* GetSecureNamingChannelArgs(
+      const grpc_channel_args* args) {
+    grpc_channel_credentials* channel_credentials =
+        grpc_channel_credentials_find_in_args(args);
+    if (channel_credentials == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Can't create subchannel: channel credentials missing for secure "
+              "channel.");
+      return nullptr;
+    }
+    // Make sure security connector does not already exist in args.
+    if (grpc_security_connector_find_in_args(args) != nullptr) {
+      gpr_log(GPR_ERROR,
+              "Can't create subchannel: security connector already present in "
+              "channel args.");
+      return nullptr;
+    }
+    // To which address are we connecting? By default, use the server URI.
+    const grpc_arg* server_uri_arg =
+        grpc_channel_args_find(args, GRPC_ARG_SERVER_URI);
+    const char* server_uri_str = grpc_channel_arg_get_string(server_uri_arg);
+    GPR_ASSERT(server_uri_str != nullptr);
+    grpc_uri* server_uri =
+        grpc_uri_parse(server_uri_str, true /* suppress errors */);
+    GPR_ASSERT(server_uri != nullptr);
+    const TargetAuthorityTable* target_authority_table =
+        FindTargetAuthorityTableInArgs(args);
+    grpc_core::UniquePtr<char> authority;
+    if (target_authority_table != nullptr) {
+      // Find the authority for the target.
+      const char* target_uri_str =
+          Subchannel::GetUriFromSubchannelAddressArg(args);
+      grpc_uri* target_uri =
+          grpc_uri_parse(target_uri_str, false /* suppress errors */);
+      GPR_ASSERT(target_uri != nullptr);
+      if (target_uri->path[0] != '\0') {  // "path" may be empty
+        const grpc_slice key = grpc_slice_from_static_string(
+            target_uri->path[0] == '/' ? target_uri->path + 1
+                                       : target_uri->path);
+        const grpc_core::UniquePtr<char>* value =
+            target_authority_table->Get(key);
+        if (value != nullptr) authority.reset(gpr_strdup(value->get()));
+        grpc_slice_unref_internal(key);
+      }
+      grpc_uri_destroy(target_uri);
+    }
+    // If the authority hasn't already been set (either because no target
+    // authority table was present or because the target was not present
+    // in the table), fall back to using the original server URI.
+    if (authority == nullptr) {
+      authority = ResolverRegistry::GetDefaultAuthority(server_uri_str);
+    }
+    grpc_arg args_to_add[2];
+    size_t num_args_to_add = 0;
+    if (grpc_channel_args_find(args, GRPC_ARG_DEFAULT_AUTHORITY) == nullptr) {
+      // If the channel args don't already contain GRPC_ARG_DEFAULT_AUTHORITY,
+      // add the arg, setting it to the value just obtained.
+      args_to_add[num_args_to_add++] = grpc_channel_arg_string_create(
+          const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), authority.get());
+    }
+    grpc_channel_args* args_with_authority =
+        grpc_channel_args_copy_and_add(args, args_to_add, num_args_to_add);
+    grpc_uri_destroy(server_uri);
+    // Create the security connector using the credentials and target name.
+    grpc_channel_args* new_args_from_connector = nullptr;
+    RefCountedPtr<grpc_channel_security_connector>
+        subchannel_security_connector =
+            channel_credentials->create_security_connector(
+                /*call_creds=*/nullptr, authority.get(), args_with_authority,
+                &new_args_from_connector);
+    if (subchannel_security_connector == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Failed to create secure subchannel for secure name '%s'",
+              authority.get());
+      grpc_channel_args_destroy(args_with_authority);
+      return nullptr;
+    }
+    grpc_arg new_security_connector_arg =
+        grpc_security_connector_to_arg(subchannel_security_connector.get());
+    grpc_channel_args* new_args = grpc_channel_args_copy_and_add(
+        new_args_from_connector != nullptr ? new_args_from_connector
+                                           : args_with_authority,
+        &new_security_connector_arg, 1);
+    subchannel_security_connector.reset(DEBUG_LOCATION, "lb_channel_create");
+    if (new_args_from_connector != nullptr) {
+      grpc_channel_args_destroy(new_args_from_connector);
+    }
+    grpc_channel_args_destroy(args_with_authority);
+    return new_args;
+  }
+};
+
+namespace {
+
+grpc_channel* CreateChannel(const char* target, const grpc_channel_args* args) {
+  if (target == nullptr) {
+    gpr_log(GPR_ERROR, "cannot create channel with NULL target name");
+    return nullptr;
+  }
+  // Add channel arg containing the server URI.
+  grpc_core::UniquePtr<char> canonical_target =
+      ResolverRegistry::AddDefaultPrefixIfNeeded(target);
+  grpc_arg arg = grpc_channel_arg_string_create(
+      const_cast<char*>(GRPC_ARG_SERVER_URI), canonical_target.get());
+  const char* to_remove[] = {GRPC_ARG_SERVER_URI};
+  grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1);
+  grpc_channel* channel =
+      grpc_channel_create(target, new_args, GRPC_CLIENT_CHANNEL, nullptr);
+  grpc_channel_args_destroy(new_args);
+  return channel;
+}
+
+}  // namespace
+
+}  // namespace grpc_core
+
+namespace {
+
+grpc_core::Chttp2SecureClientChannelFactory* g_factory;
+gpr_once g_factory_once = GPR_ONCE_INIT;
+
+void FactoryInit() {
+  g_factory = new grpc_core::Chttp2SecureClientChannelFactory();
+}
+
+}  // namespace
+
+// Create a secure client channel:
+//   Asynchronously: - resolve target
+//                   - connect to it (trying alternatives as presented)
+//                   - perform handshakes
+grpc_channel* grpc_secure_channel_create(grpc_channel_credentials* creds,
+                                         const char* target,
+                                         const grpc_channel_args* args,
+                                         void* reserved) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE(
+      "grpc_secure_channel_create(creds=%p, target=%s, args=%p, "
+      "reserved=%p)",
+      4, ((void*)creds, target, (void*)args, (void*)reserved));
+  GPR_ASSERT(reserved == nullptr);
+  grpc_channel* channel = nullptr;
+  if (creds != nullptr) {
+    // Add channel args containing the client channel factory and channel
+    // credentials.
+    gpr_once_init(&g_factory_once, FactoryInit);
+    grpc_arg channel_factory_arg =
+        grpc_core::ClientChannelFactory::CreateChannelArg(g_factory);
+    grpc_arg args_to_add[] = {channel_factory_arg,
+                              grpc_channel_credentials_to_arg(creds)};
+    const char* arg_to_remove = channel_factory_arg.key;
+    grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+        args, &arg_to_remove, 1, args_to_add, GPR_ARRAY_SIZE(args_to_add));
+    new_args = creds->update_arguments(new_args);
+    // Create channel.
+    channel = grpc_core::CreateChannel(target, new_args);
+    // Clean up.
+    grpc_channel_args_destroy(new_args);
+  }
+  return channel != nullptr ? channel
+                            : grpc_lame_client_channel_create(
+                                  target, GRPC_STATUS_INTERNAL,
+                                  "Failed to create secure client channel");
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.cc
new file mode 100644
index 0000000..83e898f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.cc	
@@ -0,0 +1,451 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/server/chttp2_server.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "absl/strings/str_format.h"
+
+#include "src/core/ext/filters/http/server/http_server_filter.h"
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/server.h"
+
+typedef struct {
+  grpc_server* server;
+  grpc_tcp_server* tcp_server;
+  grpc_channel_args* args;
+  gpr_mu mu;
+  bool shutdown;
+  grpc_closure tcp_server_shutdown_complete;
+  grpc_closure* server_destroy_listener_done;
+  grpc_core::HandshakeManager* pending_handshake_mgrs;
+  grpc_core::RefCountedPtr<grpc_core::channelz::ListenSocketNode>
+      channelz_listen_socket;
+} server_state;
+
+typedef struct {
+  gpr_refcount refs;
+  server_state* svr_state;
+  grpc_pollset* accepting_pollset;
+  grpc_tcp_server_acceptor* acceptor;
+  grpc_core::RefCountedPtr<grpc_core::HandshakeManager> handshake_mgr;
+  // State for enforcing handshake timeout on receiving HTTP/2 settings.
+  grpc_chttp2_transport* transport;
+  grpc_millis deadline;
+  grpc_timer timer;
+  grpc_closure on_timeout;
+  grpc_closure on_receive_settings;
+  grpc_pollset_set* interested_parties;
+} server_connection_state;
+
+static void server_connection_state_unref(
+    server_connection_state* connection_state) {
+  if (gpr_unref(&connection_state->refs)) {
+    if (connection_state->transport != nullptr) {
+      GRPC_CHTTP2_UNREF_TRANSPORT(connection_state->transport,
+                                  "receive settings timeout");
+    }
+    grpc_pollset_set_del_pollset(connection_state->interested_parties,
+                                 connection_state->accepting_pollset);
+    grpc_pollset_set_destroy(connection_state->interested_parties);
+    gpr_free(connection_state);
+  }
+}
+
+static void on_timeout(void* arg, grpc_error* error) {
+  server_connection_state* connection_state =
+      static_cast<server_connection_state*>(arg);
+  // Note that we may be called with GRPC_ERROR_NONE when the timer fires
+  // or with an error indicating that the timer system is being shut down.
+  if (error != GRPC_ERROR_CANCELLED) {
+    grpc_transport_op* op = grpc_make_transport_op(nullptr);
+    op->disconnect_with_error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Did not receive HTTP/2 settings before handshake timeout");
+    grpc_transport_perform_op(&connection_state->transport->base, op);
+  }
+  server_connection_state_unref(connection_state);
+}
+
+static void on_receive_settings(void* arg, grpc_error* error) {
+  server_connection_state* connection_state =
+      static_cast<server_connection_state*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_timer_cancel(&connection_state->timer);
+  }
+  server_connection_state_unref(connection_state);
+}
+
+static void on_handshake_done(void* arg, grpc_error* error) {
+  auto* args = static_cast<grpc_core::HandshakerArgs*>(arg);
+  server_connection_state* connection_state =
+      static_cast<server_connection_state*>(args->user_data);
+  gpr_mu_lock(&connection_state->svr_state->mu);
+  grpc_resource_user* resource_user = grpc_server_get_default_resource_user(
+      connection_state->svr_state->server);
+  if (error != GRPC_ERROR_NONE || connection_state->svr_state->shutdown) {
+    const char* error_str = grpc_error_string(error);
+    gpr_log(GPR_DEBUG, "Handshaking failed: %s", error_str);
+    grpc_resource_user* resource_user = grpc_server_get_default_resource_user(
+        connection_state->svr_state->server);
+    if (resource_user != nullptr) {
+      grpc_resource_user_free(resource_user, GRPC_RESOURCE_QUOTA_CHANNEL_SIZE);
+    }
+    if (error == GRPC_ERROR_NONE && args->endpoint != nullptr) {
+      // We were shut down after handshaking completed successfully, so
+      // destroy the endpoint here.
+      // TODO(ctiller): It is currently necessary to shutdown endpoints
+      // before destroying them, even if we know that there are no
+      // pending read/write callbacks.  This should be fixed, at which
+      // point this can be removed.
+      grpc_endpoint_shutdown(args->endpoint, GRPC_ERROR_NONE);
+      grpc_endpoint_destroy(args->endpoint);
+      grpc_channel_args_destroy(args->args);
+      grpc_slice_buffer_destroy_internal(args->read_buffer);
+      gpr_free(args->read_buffer);
+    }
+  } else {
+    // If the handshaking succeeded but there is no endpoint, then the
+    // handshaker may have handed off the connection to some external
+    // code, so we can just clean up here without creating a transport.
+    if (args->endpoint != nullptr) {
+      grpc_transport* transport = grpc_create_chttp2_transport(
+          args->args, args->endpoint, false, resource_user);
+      grpc_server_setup_transport(
+          connection_state->svr_state->server, transport,
+          connection_state->accepting_pollset, args->args,
+          grpc_chttp2_transport_get_socket_node(transport), resource_user);
+      // Use notify_on_receive_settings callback to enforce the
+      // handshake deadline.
+      connection_state->transport =
+          reinterpret_cast<grpc_chttp2_transport*>(transport);
+      gpr_ref(&connection_state->refs);
+      GRPC_CLOSURE_INIT(&connection_state->on_receive_settings,
+                        on_receive_settings, connection_state,
+                        grpc_schedule_on_exec_ctx);
+      grpc_chttp2_transport_start_reading(
+          transport, args->read_buffer, &connection_state->on_receive_settings);
+      grpc_channel_args_destroy(args->args);
+      gpr_ref(&connection_state->refs);
+      GRPC_CHTTP2_REF_TRANSPORT((grpc_chttp2_transport*)transport,
+                                "receive settings timeout");
+      GRPC_CLOSURE_INIT(&connection_state->on_timeout, on_timeout,
+                        connection_state, grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&connection_state->timer, connection_state->deadline,
+                      &connection_state->on_timeout);
+    } else {
+      if (resource_user != nullptr) {
+        grpc_resource_user_free(resource_user,
+                                GRPC_RESOURCE_QUOTA_CHANNEL_SIZE);
+      }
+    }
+  }
+  connection_state->handshake_mgr->RemoveFromPendingMgrList(
+      &connection_state->svr_state->pending_handshake_mgrs);
+  gpr_mu_unlock(&connection_state->svr_state->mu);
+  connection_state->handshake_mgr.reset();
+  gpr_free(connection_state->acceptor);
+  grpc_tcp_server_unref(connection_state->svr_state->tcp_server);
+  server_connection_state_unref(connection_state);
+}
+
+static void on_accept(void* arg, grpc_endpoint* tcp,
+                      grpc_pollset* accepting_pollset,
+                      grpc_tcp_server_acceptor* acceptor) {
+  server_state* state = static_cast<server_state*>(arg);
+  gpr_mu_lock(&state->mu);
+  if (state->shutdown) {
+    gpr_mu_unlock(&state->mu);
+    grpc_endpoint_shutdown(tcp, GRPC_ERROR_NONE);
+    grpc_endpoint_destroy(tcp);
+    gpr_free(acceptor);
+    return;
+  }
+  grpc_resource_user* resource_user =
+      grpc_server_get_default_resource_user(state->server);
+  if (resource_user != nullptr &&
+      !grpc_resource_user_safe_alloc(resource_user,
+                                     GRPC_RESOURCE_QUOTA_CHANNEL_SIZE)) {
+    gpr_log(
+        GPR_ERROR,
+        "Memory quota exhausted, rejecting the connection, no handshaking.");
+    gpr_mu_unlock(&state->mu);
+    grpc_endpoint_shutdown(tcp, GRPC_ERROR_NONE);
+    grpc_endpoint_destroy(tcp);
+    gpr_free(acceptor);
+    return;
+  }
+  auto handshake_mgr = grpc_core::MakeRefCounted<grpc_core::HandshakeManager>();
+  handshake_mgr->AddToPendingMgrList(&state->pending_handshake_mgrs);
+  grpc_tcp_server_ref(state->tcp_server);
+  gpr_mu_unlock(&state->mu);
+  server_connection_state* connection_state =
+      static_cast<server_connection_state*>(
+          gpr_zalloc(sizeof(*connection_state)));
+  gpr_ref_init(&connection_state->refs, 1);
+  connection_state->svr_state = state;
+  connection_state->accepting_pollset = accepting_pollset;
+  connection_state->acceptor = acceptor;
+  connection_state->handshake_mgr = handshake_mgr;
+  connection_state->interested_parties = grpc_pollset_set_create();
+  grpc_pollset_set_add_pollset(connection_state->interested_parties,
+                               connection_state->accepting_pollset);
+  grpc_core::HandshakerRegistry::AddHandshakers(
+      grpc_core::HANDSHAKER_SERVER, state->args,
+      connection_state->interested_parties,
+      connection_state->handshake_mgr.get());
+  const grpc_arg* timeout_arg =
+      grpc_channel_args_find(state->args, GRPC_ARG_SERVER_HANDSHAKE_TIMEOUT_MS);
+  connection_state->deadline =
+      grpc_core::ExecCtx::Get()->Now() +
+      grpc_channel_arg_get_integer(timeout_arg,
+                                   {120 * GPR_MS_PER_SEC, 1, INT_MAX});
+  connection_state->handshake_mgr->DoHandshake(
+      tcp, state->args, connection_state->deadline, acceptor, on_handshake_done,
+      connection_state);
+}
+
+/* Server callback: start listening on our ports */
+static void server_start_listener(grpc_server* /*server*/, void* arg,
+                                  grpc_pollset** pollsets,
+                                  size_t pollset_count) {
+  server_state* state = static_cast<server_state*>(arg);
+  gpr_mu_lock(&state->mu);
+  state->shutdown = false;
+  gpr_mu_unlock(&state->mu);
+  grpc_tcp_server_start(state->tcp_server, pollsets, pollset_count, on_accept,
+                        state);
+}
+
+static void tcp_server_shutdown_complete(void* arg, grpc_error* error) {
+  server_state* state = static_cast<server_state*>(arg);
+  /* ensure all threads have unlocked */
+  gpr_mu_lock(&state->mu);
+  grpc_closure* destroy_done = state->server_destroy_listener_done;
+  GPR_ASSERT(state->shutdown);
+  if (state->pending_handshake_mgrs != nullptr) {
+    state->pending_handshake_mgrs->ShutdownAllPending(GRPC_ERROR_REF(error));
+  }
+  state->channelz_listen_socket.reset();
+  gpr_mu_unlock(&state->mu);
+  // Flush queued work before destroying handshaker factory, since that
+  // may do a synchronous unref.
+  grpc_core::ExecCtx::Get()->Flush();
+  if (destroy_done != nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, destroy_done,
+                            GRPC_ERROR_REF(error));
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+  grpc_channel_args_destroy(state->args);
+  gpr_mu_destroy(&state->mu);
+  gpr_free(state);
+}
+
+/* Server callback: destroy the tcp listener (so we don't generate further
+   callbacks) */
+static void server_destroy_listener(grpc_server* /*server*/, void* arg,
+                                    grpc_closure* destroy_done) {
+  server_state* state = static_cast<server_state*>(arg);
+  gpr_mu_lock(&state->mu);
+  state->shutdown = true;
+  state->server_destroy_listener_done = destroy_done;
+  grpc_tcp_server* tcp_server = state->tcp_server;
+  gpr_mu_unlock(&state->mu);
+  grpc_tcp_server_shutdown_listeners(tcp_server);
+  grpc_tcp_server_unref(tcp_server);
+}
+
+static grpc_error* chttp2_server_add_acceptor(grpc_server* server,
+                                              const char* name,
+                                              grpc_channel_args* args) {
+  grpc_tcp_server* tcp_server = nullptr;
+  grpc_error* err = GRPC_ERROR_NONE;
+  server_state* state = nullptr;
+  const grpc_arg* arg = nullptr;
+  grpc_core::TcpServerFdHandler** arg_val = nullptr;
+  state = static_cast<server_state*>(gpr_zalloc(sizeof(*state)));
+  GRPC_CLOSURE_INIT(&state->tcp_server_shutdown_complete,
+                    tcp_server_shutdown_complete, state,
+                    grpc_schedule_on_exec_ctx);
+  err = grpc_tcp_server_create(&state->tcp_server_shutdown_complete, args,
+                               &tcp_server);
+  if (err != GRPC_ERROR_NONE) {
+    goto error;
+  }
+  state->server = server;
+  state->tcp_server = tcp_server;
+  state->args = args;
+  state->shutdown = true;
+  gpr_mu_init(&state->mu);
+  // TODO(yangg) channelz
+  arg = grpc_channel_args_find(args, name);
+  GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
+  arg_val = static_cast<grpc_core::TcpServerFdHandler**>(arg->value.pointer.p);
+  *arg_val = grpc_tcp_server_create_fd_handler(tcp_server);
+
+  grpc_server_add_listener(server, state, server_start_listener,
+                           server_destroy_listener, /* node */ nullptr);
+  return err;
+
+/* Error path: cleanup and return */
+error:
+  GPR_ASSERT(err != GRPC_ERROR_NONE);
+  if (tcp_server) {
+    grpc_tcp_server_unref(tcp_server);
+  } else {
+    grpc_channel_args_destroy(args);
+    gpr_free(state);
+  }
+  return err;
+}
+
+grpc_error* grpc_chttp2_server_add_port(grpc_server* server, const char* addr,
+                                        grpc_channel_args* args,
+                                        int* port_num) {
+  grpc_resolved_addresses* resolved = nullptr;
+  grpc_tcp_server* tcp_server = nullptr;
+  size_t i;
+  size_t count = 0;
+  int port_temp;
+  grpc_error* err = GRPC_ERROR_NONE;
+  server_state* state = nullptr;
+  grpc_error** errors = nullptr;
+  size_t naddrs = 0;
+  const grpc_arg* arg = nullptr;
+
+  *port_num = -1;
+
+  if (strncmp(addr, "external:", 9) == 0) {
+    return chttp2_server_add_acceptor(server, addr, args);
+  }
+
+  /* resolve address */
+  err = grpc_blocking_resolve_address(addr, "https", &resolved);
+  if (err != GRPC_ERROR_NONE) {
+    goto error;
+  }
+  state = static_cast<server_state*>(gpr_zalloc(sizeof(*state)));
+  GRPC_CLOSURE_INIT(&state->tcp_server_shutdown_complete,
+                    tcp_server_shutdown_complete, state,
+                    grpc_schedule_on_exec_ctx);
+  err = grpc_tcp_server_create(&state->tcp_server_shutdown_complete, args,
+                               &tcp_server);
+  if (err != GRPC_ERROR_NONE) {
+    goto error;
+  }
+
+  state->server = server;
+  state->tcp_server = tcp_server;
+  state->args = args;
+  state->shutdown = true;
+  gpr_mu_init(&state->mu);
+
+  naddrs = resolved->naddrs;
+  errors = static_cast<grpc_error**>(gpr_malloc(sizeof(*errors) * naddrs));
+  for (i = 0; i < naddrs; i++) {
+    errors[i] =
+        grpc_tcp_server_add_port(tcp_server, &resolved->addrs[i], &port_temp);
+    if (errors[i] == GRPC_ERROR_NONE) {
+      if (*port_num == -1) {
+        *port_num = port_temp;
+      } else {
+        GPR_ASSERT(*port_num == port_temp);
+      }
+      count++;
+    }
+  }
+  if (count == 0) {
+    char* msg;
+    gpr_asprintf(&msg, "No address added out of total %" PRIuPTR " resolved",
+                 naddrs);
+    err = GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(msg, errors, naddrs);
+    gpr_free(msg);
+    goto error;
+  } else if (count != naddrs) {
+    char* msg;
+    gpr_asprintf(&msg,
+                 "Only %" PRIuPTR " addresses added out of total %" PRIuPTR
+                 " resolved",
+                 count, naddrs);
+    err = GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(msg, errors, naddrs);
+    gpr_free(msg);
+
+    const char* warning_message = grpc_error_string(err);
+    gpr_log(GPR_INFO, "WARNING: %s", warning_message);
+
+    /* we managed to bind some addresses: continue */
+  }
+  grpc_resolved_addresses_destroy(resolved);
+
+  arg = grpc_channel_args_find(args, GRPC_ARG_ENABLE_CHANNELZ);
+  if (grpc_channel_arg_get_bool(arg, GRPC_ENABLE_CHANNELZ_DEFAULT)) {
+    state->channelz_listen_socket =
+        grpc_core::MakeRefCounted<grpc_core::channelz::ListenSocketNode>(
+            addr, absl::StrFormat("chttp2 listener %s", addr));
+  }
+
+  /* Register with the server only upon success */
+  grpc_server_add_listener(server, state, server_start_listener,
+                           server_destroy_listener,
+                           state->channelz_listen_socket);
+  goto done;
+
+/* Error path: cleanup and return */
+error:
+  GPR_ASSERT(err != GRPC_ERROR_NONE);
+  if (resolved) {
+    grpc_resolved_addresses_destroy(resolved);
+  }
+  if (tcp_server) {
+    grpc_tcp_server_unref(tcp_server);
+  } else {
+    grpc_channel_args_destroy(args);
+    gpr_free(state);
+  }
+  *port_num = 0;
+
+done:
+  if (errors != nullptr) {
+    for (i = 0; i < naddrs; i++) {
+      GRPC_ERROR_UNREF(errors[i]);
+    }
+    gpr_free(errors);
+  }
+  return err;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.h
new file mode 100644
index 0000000..6e51001
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/chttp2_server.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/// Adds a port to \a server.  Sets \a port_num to the port number.
+/// Takes ownership of \a args.
+grpc_error* grpc_chttp2_server_add_port(grpc_server* server, const char* addr,
+                                        grpc_channel_args* args, int* port_num);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2.cc
new file mode 100644
index 0000000..99f18cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2.cc	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/ext/transport/chttp2/server/chttp2_server.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/server.h"
+
+int grpc_server_add_insecure_http2_port(grpc_server* server, const char* addr) {
+  grpc_core::ExecCtx exec_ctx;
+  int port_num = 0;
+  GRPC_API_TRACE("grpc_server_add_insecure_http2_port(server=%p, addr=%s)", 2,
+                 (server, addr));
+  grpc_error* err = grpc_chttp2_server_add_port(
+      server, addr,
+      grpc_channel_args_copy(grpc_server_get_channel_args(server)), &port_num);
+  if (err != GRPC_ERROR_NONE) {
+    const char* msg = grpc_error_string(err);
+    gpr_log(GPR_ERROR, "%s", msg);
+
+    GRPC_ERROR_UNREF(err);
+  }
+  return port_num;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.cc
new file mode 100644
index 0000000..c29c1e5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.cc	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_posix.h>
+#include <grpc/support/log.h>
+
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/server.h"
+
+void grpc_server_add_insecure_channel_from_fd(grpc_server* server,
+                                              void* reserved, int fd) {
+  GPR_ASSERT(reserved == nullptr);
+
+  grpc_core::ExecCtx exec_ctx;
+  char* name;
+  gpr_asprintf(&name, "fd:%d", fd);
+
+  grpc_endpoint* server_endpoint =
+      grpc_tcp_create(grpc_fd_create(fd, name, true),
+                      grpc_server_get_channel_args(server), name);
+
+  gpr_free(name);
+
+  const grpc_channel_args* server_args = grpc_server_get_channel_args(server);
+  grpc_transport* transport = grpc_create_chttp2_transport(
+      server_args, server_endpoint, false /* is_client */);
+
+  grpc_pollset** pollsets;
+  size_t num_pollsets = 0;
+  grpc_server_get_pollsets(server, &pollsets, &num_pollsets);
+
+  for (size_t i = 0; i < num_pollsets; i++) {
+    grpc_endpoint_add_to_pollset(server_endpoint, pollsets[i]);
+  }
+
+  grpc_server_setup_transport(server, transport, nullptr, server_args, nullptr);
+  grpc_chttp2_transport_start_reading(transport, nullptr, nullptr);
+}
+
+#else  // !GPR_SUPPORT_CHANNELS_FROM_FD
+
+void grpc_server_add_insecure_channel_from_fd(grpc_server* server,
+                                              void* reserved, int fd) {
+  GPR_ASSERT(0);
+}
+
+#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.cc
new file mode 100644
index 0000000..98fdb62
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.cc	
@@ -0,0 +1,86 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/server/chttp2_server.h"
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/server.h"
+
+int grpc_server_add_secure_http2_port(grpc_server* server, const char* addr,
+                                      grpc_server_credentials* creds) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_error* err = GRPC_ERROR_NONE;
+  grpc_core::RefCountedPtr<grpc_server_security_connector> sc;
+  int port_num = 0;
+  grpc_channel_args* args = nullptr;
+  GRPC_API_TRACE(
+      "grpc_server_add_secure_http2_port("
+      "server=%p, addr=%s, creds=%p)",
+      3, (server, addr, creds));
+  // Create security context.
+  if (creds == nullptr) {
+    err = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No credentials specified for secure server port (creds==NULL)");
+    goto done;
+  }
+  sc = creds->create_security_connector();
+  if (sc == nullptr) {
+    char* msg;
+    gpr_asprintf(&msg,
+                 "Unable to create secure server with credentials of type %s.",
+                 creds->type());
+    err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    goto done;
+  }
+  // Create channel args.
+  grpc_arg args_to_add[2];
+  args_to_add[0] = grpc_server_credentials_to_arg(creds);
+  args_to_add[1] = grpc_security_connector_to_arg(sc.get());
+  args =
+      grpc_channel_args_copy_and_add(grpc_server_get_channel_args(server),
+                                     args_to_add, GPR_ARRAY_SIZE(args_to_add));
+  // Add server port.
+  err = grpc_chttp2_server_add_port(server, addr, args, &port_num);
+done:
+  sc.reset(DEBUG_LOCATION, "server");
+
+  if (err != GRPC_ERROR_NONE) {
+    const char* msg = grpc_error_string(err);
+    gpr_log(GPR_ERROR, "%s", msg);
+
+    GRPC_ERROR_UNREF(err);
+  }
+  return port_num;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.cc
new file mode 100644
index 0000000..249035d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.cc	
@@ -0,0 +1,250 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/ext/transport/chttp2/transport/bin_decoder.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+static uint8_t decode_table[] = {
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 62,   0x40, 0x40, 0x40, 63,
+    52,   53,   54,   55,   56,   57,   58,   59,   60,   61,   0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0,    1,    2,    3,    4,    5,    6,
+    7,    8,    9,    10,   11,   12,   13,   14,   15,   16,   17,   18,
+    19,   20,   21,   22,   23,   24,   25,   0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 26,   27,   28,   29,   30,   31,   32,   33,   34,   35,   36,
+    37,   38,   39,   40,   41,   42,   43,   44,   45,   46,   47,   48,
+    49,   50,   51,   0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
+    0x40, 0x40, 0x40, 0x40};
+
+static const uint8_t tail_xtra[4] = {0, 0, 1, 2};
+
+static bool input_is_valid(const uint8_t* input_ptr, size_t length) {
+  size_t i;
+
+  for (i = 0; i < length; ++i) {
+    if (GPR_UNLIKELY((decode_table[input_ptr[i]] & 0xC0) != 0)) {
+      gpr_log(GPR_ERROR,
+              "Base64 decoding failed, invalid character '%c' in base64 "
+              "input.\n",
+              static_cast<char>(*input_ptr));
+      return false;
+    }
+  }
+  return true;
+}
+
+#define COMPOSE_OUTPUT_BYTE_0(input_ptr)        \
+  (uint8_t)((decode_table[input_ptr[0]] << 2) | \
+            (decode_table[input_ptr[1]] >> 4))
+
+#define COMPOSE_OUTPUT_BYTE_1(input_ptr)        \
+  (uint8_t)((decode_table[input_ptr[1]] << 4) | \
+            (decode_table[input_ptr[2]] >> 2))
+
+#define COMPOSE_OUTPUT_BYTE_2(input_ptr) \
+  (uint8_t)((decode_table[input_ptr[2]] << 6) | decode_table[input_ptr[3]])
+
+// By RFC 4648, if the length of the encoded string without padding is 4n+r,
+// the length of decoded string is: 1) 3n if r = 0, 2) 3n + 1 if r = 2, 3, or
+// 3) invalid if r = 1.
+size_t grpc_chttp2_base64_infer_length_after_decode(const grpc_slice& slice) {
+  size_t len = GRPC_SLICE_LENGTH(slice);
+  const uint8_t* bytes = GRPC_SLICE_START_PTR(slice);
+  while (len > 0 && bytes[len - 1] == '=') {
+    len--;
+  }
+  if (GPR_UNLIKELY(GRPC_SLICE_LENGTH(slice) - len > 2)) {
+    gpr_log(GPR_ERROR,
+            "Base64 decoding failed. Input has more than 2 paddings.");
+    return 0;
+  }
+  size_t tuples = len / 4;
+  size_t tail_case = len % 4;
+  if (GPR_UNLIKELY(tail_case == 1)) {
+    gpr_log(GPR_ERROR,
+            "Base64 decoding failed. Input has a length of %zu (without"
+            " padding), which is invalid.\n",
+            len);
+    return 0;
+  }
+  return tuples * 3 + tail_xtra[tail_case];
+}
+
+bool grpc_base64_decode_partial(struct grpc_base64_decode_context* ctx) {
+  size_t input_tail;
+
+  if (ctx->input_cur > ctx->input_end || ctx->output_cur > ctx->output_end) {
+    return false;
+  }
+
+  // Process a block of 4 input characters and 3 output bytes
+  while (ctx->input_end >= ctx->input_cur + 4 &&
+         ctx->output_end >= ctx->output_cur + 3) {
+    if (!input_is_valid(ctx->input_cur, 4)) return false;
+    ctx->output_cur[0] = COMPOSE_OUTPUT_BYTE_0(ctx->input_cur);
+    ctx->output_cur[1] = COMPOSE_OUTPUT_BYTE_1(ctx->input_cur);
+    ctx->output_cur[2] = COMPOSE_OUTPUT_BYTE_2(ctx->input_cur);
+    ctx->output_cur += 3;
+    ctx->input_cur += 4;
+  }
+
+  // Process the tail of input data
+  input_tail = static_cast<size_t>(ctx->input_end - ctx->input_cur);
+  if (input_tail == 4) {
+    // Process the input data with pad chars
+    if (ctx->input_cur[3] == '=') {
+      if (ctx->input_cur[2] == '=' && ctx->output_end >= ctx->output_cur + 1) {
+        if (!input_is_valid(ctx->input_cur, 2)) return false;
+        *(ctx->output_cur++) = COMPOSE_OUTPUT_BYTE_0(ctx->input_cur);
+        ctx->input_cur += 4;
+      } else if (ctx->output_end >= ctx->output_cur + 2) {
+        if (!input_is_valid(ctx->input_cur, 3)) return false;
+        *(ctx->output_cur++) = COMPOSE_OUTPUT_BYTE_0(ctx->input_cur);
+        *(ctx->output_cur++) = COMPOSE_OUTPUT_BYTE_1(ctx->input_cur);
+        ;
+        ctx->input_cur += 4;
+      }
+    }
+
+  } else if (ctx->contains_tail && input_tail > 1) {
+    // Process the input data without pad chars, but constains_tail is set
+    if (ctx->output_end >= ctx->output_cur + tail_xtra[input_tail]) {
+      if (!input_is_valid(ctx->input_cur, input_tail)) return false;
+      switch (input_tail) {
+        case 3:
+          ctx->output_cur[1] = COMPOSE_OUTPUT_BYTE_1(ctx->input_cur);
+        /* fallthrough */
+        case 2:
+          ctx->output_cur[0] = COMPOSE_OUTPUT_BYTE_0(ctx->input_cur);
+      }
+      ctx->output_cur += tail_xtra[input_tail];
+      ctx->input_cur += input_tail;
+    }
+  }
+
+  return true;
+}
+
+grpc_slice grpc_chttp2_base64_decode(const grpc_slice& input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
+  size_t output_length = input_length / 4 * 3;
+  struct grpc_base64_decode_context ctx;
+  grpc_slice output;
+
+  if (GPR_UNLIKELY(input_length % 4 != 0)) {
+    gpr_log(GPR_ERROR,
+            "Base64 decoding failed, input of "
+            "grpc_chttp2_base64_decode has a length of %d, which is not a "
+            "multiple of 4.\n",
+            static_cast<int>(input_length));
+    return grpc_empty_slice();
+  }
+
+  if (input_length > 0) {
+    const uint8_t* input_end = GRPC_SLICE_END_PTR(input);
+    if (*(--input_end) == '=') {
+      output_length--;
+      if (*(--input_end) == '=') {
+        output_length--;
+      }
+    }
+  }
+  output = GRPC_SLICE_MALLOC(output_length);
+
+  ctx.input_cur = GRPC_SLICE_START_PTR(input);
+  ctx.input_end = GRPC_SLICE_END_PTR(input);
+  ctx.output_cur = GRPC_SLICE_START_PTR(output);
+  ctx.output_end = GRPC_SLICE_END_PTR(output);
+  ctx.contains_tail = false;
+
+  if (GPR_UNLIKELY(!grpc_base64_decode_partial(&ctx))) {
+    char* s = grpc_slice_to_c_string(input);
+    gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
+    gpr_free(s);
+    grpc_slice_unref_internal(output);
+    return grpc_empty_slice();
+  }
+  GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(ctx.input_cur == GRPC_SLICE_END_PTR(input));
+  return output;
+}
+
+grpc_slice grpc_chttp2_base64_decode_with_length(const grpc_slice& input,
+                                                 size_t output_length) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
+  grpc_slice output = GRPC_SLICE_MALLOC(output_length);
+  struct grpc_base64_decode_context ctx;
+
+  // The length of a base64 string cannot be 4 * n + 1
+  if (GPR_UNLIKELY(input_length % 4 == 1)) {
+    gpr_log(GPR_ERROR,
+            "Base64 decoding failed, input of "
+            "grpc_chttp2_base64_decode_with_length has a length of %d, which "
+            "has a tail of 1 byte.\n",
+            static_cast<int>(input_length));
+    grpc_slice_unref_internal(output);
+    return grpc_empty_slice();
+  }
+
+  if (GPR_UNLIKELY(output_length >
+                   input_length / 4 * 3 + tail_xtra[input_length % 4])) {
+    gpr_log(
+        GPR_ERROR,
+        "Base64 decoding failed, output_length %d is longer "
+        "than the max possible output length %d.\n",
+        static_cast<int>(output_length),
+        static_cast<int>(input_length / 4 * 3 + tail_xtra[input_length % 4]));
+    grpc_slice_unref_internal(output);
+    return grpc_empty_slice();
+  }
+
+  ctx.input_cur = GRPC_SLICE_START_PTR(input);
+  ctx.input_end = GRPC_SLICE_END_PTR(input);
+  ctx.output_cur = GRPC_SLICE_START_PTR(output);
+  ctx.output_end = GRPC_SLICE_END_PTR(output);
+  ctx.contains_tail = true;
+
+  if (GPR_UNLIKELY(!grpc_base64_decode_partial(&ctx))) {
+    char* s = grpc_slice_to_c_string(input);
+    gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
+    gpr_free(s);
+    grpc_slice_unref_internal(output);
+    return grpc_empty_slice();
+  }
+  GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(ctx.input_cur <= GRPC_SLICE_END_PTR(input));
+  return output;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.h
new file mode 100644
index 0000000..1cbca03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_decoder.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <stdbool.h>
+
+struct grpc_base64_decode_context {
+  /* input/output: */
+  const uint8_t* input_cur;
+  const uint8_t* input_end;
+  uint8_t* output_cur;
+  uint8_t* output_end;
+  /* Indicate if the decoder should handle the tail of input data*/
+  bool contains_tail;
+};
+
+/* base64 decode a grpc_base64_decode_context util either input_end is reached
+   or output_end is reached. When input_end is reached, (input_end - input_cur)
+   is less than 4. When output_end is reached, (output_end - output_cur) is less
+   than 3. Returns false if decoding is failed. */
+bool grpc_base64_decode_partial(struct grpc_base64_decode_context* ctx);
+
+/* base64 decode a slice with pad chars. Returns a new slice, does not take
+   ownership of the input. Returns an empty slice if decoding is failed. */
+grpc_slice grpc_chttp2_base64_decode(const grpc_slice& input);
+
+/* base64 decode a slice without pad chars, data length is needed. Returns a new
+   slice, does not take ownership of the input. Returns an empty slice if
+   decoding is failed. */
+grpc_slice grpc_chttp2_base64_decode_with_length(const grpc_slice& input,
+                                                 size_t output_length);
+
+/* Infer the length of decoded data from encoded data. */
+size_t grpc_chttp2_base64_infer_length_after_decode(const grpc_slice& slice);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.cc
new file mode 100644
index 0000000..c816aba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.cc	
@@ -0,0 +1,232 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include "src/core/ext/transport/chttp2/transport/huffsyms.h"
+
+static const char alphabet[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+typedef struct {
+  uint16_t bits;
+  uint8_t length;
+} b64_huff_sym;
+
+static const b64_huff_sym huff_alphabet[64] = {
+    {0x21, 6}, {0x5d, 7}, {0x5e, 7},   {0x5f, 7}, {0x60, 7}, {0x61, 7},
+    {0x62, 7}, {0x63, 7}, {0x64, 7},   {0x65, 7}, {0x66, 7}, {0x67, 7},
+    {0x68, 7}, {0x69, 7}, {0x6a, 7},   {0x6b, 7}, {0x6c, 7}, {0x6d, 7},
+    {0x6e, 7}, {0x6f, 7}, {0x70, 7},   {0x71, 7}, {0x72, 7}, {0xfc, 8},
+    {0x73, 7}, {0xfd, 8}, {0x3, 5},    {0x23, 6}, {0x4, 5},  {0x24, 6},
+    {0x5, 5},  {0x25, 6}, {0x26, 6},   {0x27, 6}, {0x6, 5},  {0x74, 7},
+    {0x75, 7}, {0x28, 6}, {0x29, 6},   {0x2a, 6}, {0x7, 5},  {0x2b, 6},
+    {0x76, 7}, {0x2c, 6}, {0x8, 5},    {0x9, 5},  {0x2d, 6}, {0x77, 7},
+    {0x78, 7}, {0x79, 7}, {0x7a, 7},   {0x7b, 7}, {0x0, 5},  {0x1, 5},
+    {0x2, 5},  {0x19, 6}, {0x1a, 6},   {0x1b, 6}, {0x1c, 6}, {0x1d, 6},
+    {0x1e, 6}, {0x1f, 6}, {0x7fb, 11}, {0x18, 6}};
+
+static const uint8_t tail_xtra[3] = {0, 2, 3};
+
+grpc_slice grpc_chttp2_base64_encode(const grpc_slice& input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
+  size_t input_triplets = input_length / 3;
+  size_t tail_case = input_length % 3;
+  size_t output_length = input_triplets * 4 + tail_xtra[tail_case];
+  grpc_slice output = GRPC_SLICE_MALLOC(output_length);
+  const uint8_t* in = GRPC_SLICE_START_PTR(input);
+  char* out = reinterpret_cast<char*> GRPC_SLICE_START_PTR(output);
+  size_t i;
+
+  /* encode full triplets */
+  for (i = 0; i < input_triplets; i++) {
+    out[0] = alphabet[in[0] >> 2];
+    out[1] = alphabet[((in[0] & 0x3) << 4) | (in[1] >> 4)];
+    out[2] = alphabet[((in[1] & 0xf) << 2) | (in[2] >> 6)];
+    out[3] = alphabet[in[2] & 0x3f];
+    out += 4;
+    in += 3;
+  }
+
+  /* encode the remaining bytes */
+  switch (tail_case) {
+    case 0:
+      break;
+    case 1:
+      out[0] = alphabet[in[0] >> 2];
+      out[1] = alphabet[(in[0] & 0x3) << 4];
+      out += 2;
+      in += 1;
+      break;
+    case 2:
+      out[0] = alphabet[in[0] >> 2];
+      out[1] = alphabet[((in[0] & 0x3) << 4) | (in[1] >> 4)];
+      out[2] = alphabet[(in[1] & 0xf) << 2];
+      out += 3;
+      in += 2;
+      break;
+  }
+
+  GPR_ASSERT(out == (char*)GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(in == GRPC_SLICE_END_PTR(input));
+  return output;
+}
+
+grpc_slice grpc_chttp2_huffman_compress(const grpc_slice& input) {
+  size_t nbits;
+  const uint8_t* in;
+  uint8_t* out;
+  grpc_slice output;
+  uint32_t temp = 0;
+  uint32_t temp_length = 0;
+
+  nbits = 0;
+  for (in = GRPC_SLICE_START_PTR(input); in != GRPC_SLICE_END_PTR(input);
+       ++in) {
+    nbits += grpc_chttp2_huffsyms[*in].length;
+  }
+
+  output = GRPC_SLICE_MALLOC(nbits / 8 + (nbits % 8 != 0));
+  out = GRPC_SLICE_START_PTR(output);
+  for (in = GRPC_SLICE_START_PTR(input); in != GRPC_SLICE_END_PTR(input);
+       ++in) {
+    int sym = *in;
+    temp <<= grpc_chttp2_huffsyms[sym].length;
+    temp |= grpc_chttp2_huffsyms[sym].bits;
+    temp_length += grpc_chttp2_huffsyms[sym].length;
+
+    while (temp_length > 8) {
+      temp_length -= 8;
+      *out++ = static_cast<uint8_t>(temp >> temp_length);
+    }
+  }
+
+  if (temp_length) {
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    *out++ =
+        static_cast<uint8_t>(static_cast<uint8_t>(temp << (8u - temp_length)) |
+                             static_cast<uint8_t>(0xffu >> temp_length));
+  }
+
+  GPR_ASSERT(out == GRPC_SLICE_END_PTR(output));
+
+  return output;
+}
+
+typedef struct {
+  uint32_t temp;
+  uint32_t temp_length;
+  uint8_t* out;
+} huff_out;
+
+static void enc_flush_some(huff_out* out) {
+  while (out->temp_length > 8) {
+    out->temp_length -= 8;
+    *out->out++ = static_cast<uint8_t>(out->temp >> out->temp_length);
+  }
+}
+
+static void enc_add2(huff_out* out, uint8_t a, uint8_t b) {
+  b64_huff_sym sa = huff_alphabet[a];
+  b64_huff_sym sb = huff_alphabet[b];
+  out->temp = (out->temp << (sa.length + sb.length)) |
+              (static_cast<uint32_t>(sa.bits) << sb.length) | sb.bits;
+  out->temp_length +=
+      static_cast<uint32_t>(sa.length) + static_cast<uint32_t>(sb.length);
+  enc_flush_some(out);
+}
+
+static void enc_add1(huff_out* out, uint8_t a) {
+  b64_huff_sym sa = huff_alphabet[a];
+  out->temp = (out->temp << sa.length) | sa.bits;
+  out->temp_length += sa.length;
+  enc_flush_some(out);
+}
+
+grpc_slice grpc_chttp2_base64_encode_and_huffman_compress(
+    const grpc_slice& input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
+  size_t input_triplets = input_length / 3;
+  size_t tail_case = input_length % 3;
+  size_t output_syms = input_triplets * 4 + tail_xtra[tail_case];
+  size_t max_output_bits = 11 * output_syms;
+  size_t max_output_length = max_output_bits / 8 + (max_output_bits % 8 != 0);
+  grpc_slice output = GRPC_SLICE_MALLOC(max_output_length);
+  const uint8_t* in = GRPC_SLICE_START_PTR(input);
+  uint8_t* start_out = GRPC_SLICE_START_PTR(output);
+  huff_out out;
+  size_t i;
+
+  out.temp = 0;
+  out.temp_length = 0;
+  out.out = start_out;
+
+  /* encode full triplets */
+  for (i = 0; i < input_triplets; i++) {
+    const uint8_t low_to_high = static_cast<uint8_t>((in[0] & 0x3) << 4);
+    const uint8_t high_to_low = in[1] >> 4;
+    enc_add2(&out, in[0] >> 2, low_to_high | high_to_low);
+
+    const uint8_t a = static_cast<uint8_t>((in[1] & 0xf) << 2);
+    const uint8_t b = (in[2] >> 6);
+    enc_add2(&out, a | b, in[2] & 0x3f);
+    in += 3;
+  }
+
+  /* encode the remaining bytes */
+  switch (tail_case) {
+    case 0:
+      break;
+    case 1:
+      enc_add2(&out, in[0] >> 2, static_cast<uint8_t>((in[0] & 0x3) << 4));
+      in += 1;
+      break;
+    case 2: {
+      const uint8_t low_to_high = static_cast<uint8_t>((in[0] & 0x3) << 4);
+      const uint8_t high_to_low = in[1] >> 4;
+      enc_add2(&out, in[0] >> 2, low_to_high | high_to_low);
+      enc_add1(&out, static_cast<uint8_t>((in[1] & 0xf) << 2));
+      in += 2;
+      break;
+    }
+  }
+
+  if (out.temp_length) {
+    /* NB: the following integer arithmetic operation needs to be in its
+     * expanded form due to the "integral promotion" performed (see section
+     * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+     * is then required to avoid the compiler warning */
+    *out.out++ = static_cast<uint8_t>(
+        static_cast<uint8_t>(out.temp << (8u - out.temp_length)) |
+        static_cast<uint8_t>(0xffu >> out.temp_length));
+  }
+
+  GPR_ASSERT(out.out <= GRPC_SLICE_END_PTR(output));
+  GRPC_SLICE_SET_LENGTH(output, out.out - start_out);
+
+  GPR_ASSERT(in == GRPC_SLICE_END_PTR(input));
+  return output;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.h
new file mode 100644
index 0000000..4f7ee67
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/bin_encoder.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+/* base64 encode a slice. Returns a new slice, does not take ownership of the
+   input */
+grpc_slice grpc_chttp2_base64_encode(const grpc_slice& input);
+
+/* Compress a slice with the static huffman encoder detailed in the hpack
+   standard. Returns a new slice, does not take ownership of the input */
+grpc_slice grpc_chttp2_huffman_compress(const grpc_slice& input);
+
+/* equivalent to:
+   grpc_slice x = grpc_chttp2_base64_encode(input);
+   grpc_slice y = grpc_chttp2_huffman_compress(x);
+   grpc_slice_unref_internal( x);
+   return y; */
+grpc_slice grpc_chttp2_base64_encode_and_huffman_compress(
+    const grpc_slice& input);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
new file mode 100644
index 0000000..ac13d73
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_plugin.cc	
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/transport/metadata.h"
+
+GPR_GLOBAL_CONFIG_DEFINE_BOOL(
+    grpc_experimental_disable_flow_control, false,
+    "If set, flow control will be effectively disabled. Max out all values and "
+    "assume the remote peer does the same. Thus we can ignore any flow control "
+    "bookkeeping, error checking, and decision making");
+
+void grpc_chttp2_plugin_init(void) {
+  g_flow_control_enabled =
+      !GPR_GLOBAL_CONFIG_GET(grpc_experimental_disable_flow_control);
+}
+
+void grpc_chttp2_plugin_shutdown(void) {}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.cc
new file mode 100644
index 0000000..4bddaab
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.cc	
@@ -0,0 +1,3345 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "absl/strings/str_format.h"
+
+#include "src/core/ext/transport/chttp2/transport/context_list.h"
+#include "src/core/ext/transport/chttp2/transport/frame_data.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/ext/transport/chttp2/transport/varint.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/http2_errors.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/status_conversion.h"
+#include "src/core/lib/transport/timeout_encoding.h"
+#include "src/core/lib/transport/transport.h"
+#include "src/core/lib/transport/transport_impl.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+#define DEFAULT_CONNECTION_WINDOW_TARGET (1024 * 1024)
+#define MAX_WINDOW 0x7fffffffu
+#define MAX_WRITE_BUFFER_SIZE (64 * 1024 * 1024)
+#define DEFAULT_MAX_HEADER_LIST_SIZE (8 * 1024)
+
+#define DEFAULT_CLIENT_KEEPALIVE_TIME_MS INT_MAX
+#define DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_MS 20000 /* 20 seconds */
+#define DEFAULT_SERVER_KEEPALIVE_TIME_MS 7200000  /* 2 hours */
+#define DEFAULT_SERVER_KEEPALIVE_TIMEOUT_MS 20000 /* 20 seconds */
+#define DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS false
+#define KEEPALIVE_TIME_BACKOFF_MULTIPLIER 2
+
+#define DEFAULT_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
+#define DEFAULT_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
+#define DEFAULT_MAX_PINGS_BETWEEN_DATA 2
+#define DEFAULT_MAX_PING_STRIKES 2
+
+#define DEFAULT_MAX_PENDING_INDUCED_FRAMES 10000
+
+static int g_default_client_keepalive_time_ms =
+    DEFAULT_CLIENT_KEEPALIVE_TIME_MS;
+static int g_default_client_keepalive_timeout_ms =
+    DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_MS;
+static int g_default_server_keepalive_time_ms =
+    DEFAULT_SERVER_KEEPALIVE_TIME_MS;
+static int g_default_server_keepalive_timeout_ms =
+    DEFAULT_SERVER_KEEPALIVE_TIMEOUT_MS;
+static bool g_default_client_keepalive_permit_without_calls =
+    DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
+static bool g_default_server_keepalive_permit_without_calls =
+    DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
+
+static int g_default_min_sent_ping_interval_without_data_ms =
+    DEFAULT_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS;
+static int g_default_min_recv_ping_interval_without_data_ms =
+    DEFAULT_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS;
+static int g_default_max_pings_without_data = DEFAULT_MAX_PINGS_BETWEEN_DATA;
+static int g_default_max_ping_strikes = DEFAULT_MAX_PING_STRIKES;
+
+#define MAX_CLIENT_STREAM_ID 0x7fffffffu
+grpc_core::TraceFlag grpc_http_trace(false, "http");
+grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_refcount(false,
+                                                         "chttp2_refcount");
+
+/* forward declarations of various callbacks that we'll build closures around */
+static void write_action_begin_locked(void* t, grpc_error* error);
+static void write_action(void* t, grpc_error* error);
+static void write_action_end(void* t, grpc_error* error);
+static void write_action_end_locked(void* t, grpc_error* error);
+
+static void read_action(void* t, grpc_error* error);
+static void read_action_locked(void* t, grpc_error* error);
+static void continue_read_action_locked(grpc_chttp2_transport* t);
+
+static void complete_fetch(void* gs, grpc_error* error);
+static void complete_fetch_locked(void* gs, grpc_error* error);
+/** Set a transport level setting, and push it to our peer */
+static void queue_setting_update(grpc_chttp2_transport* t,
+                                 grpc_chttp2_setting_id id, uint32_t value);
+
+static void close_from_api(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                           grpc_error* error);
+
+/** Start new streams that have been created if we can */
+static void maybe_start_some_streams(grpc_chttp2_transport* t);
+
+static void connectivity_state_set(grpc_chttp2_transport* t,
+                                   grpc_connectivity_state state,
+                                   const char* reason);
+
+static void benign_reclaimer(void* t, grpc_error* error);
+static void destructive_reclaimer(void* t, grpc_error* error);
+static void benign_reclaimer_locked(void* t, grpc_error* error);
+static void destructive_reclaimer_locked(void* t, grpc_error* error);
+
+static void post_benign_reclaimer(grpc_chttp2_transport* t);
+static void post_destructive_reclaimer(grpc_chttp2_transport* t);
+
+static void close_transport_locked(grpc_chttp2_transport* t, grpc_error* error);
+static void end_all_the_calls(grpc_chttp2_transport* t, grpc_error* error);
+
+static void schedule_bdp_ping_locked(grpc_chttp2_transport* t);
+static void start_bdp_ping(void* tp, grpc_error* error);
+static void finish_bdp_ping(void* tp, grpc_error* error);
+static void start_bdp_ping_locked(void* tp, grpc_error* error);
+static void finish_bdp_ping_locked(void* tp, grpc_error* error);
+static void next_bdp_ping_timer_expired(void* tp, grpc_error* error);
+static void next_bdp_ping_timer_expired_locked(void* tp, grpc_error* error);
+
+static void cancel_pings(grpc_chttp2_transport* t, grpc_error* error);
+static void send_ping_locked(grpc_chttp2_transport* t,
+                             grpc_closure* on_initiate,
+                             grpc_closure* on_complete);
+static void retry_initiate_ping_locked(void* tp, grpc_error* error);
+
+/** keepalive-relevant functions */
+static void init_keepalive_ping(void* arg, grpc_error* error);
+static void init_keepalive_ping_locked(void* arg, grpc_error* error);
+static void start_keepalive_ping(void* arg, grpc_error* error);
+static void finish_keepalive_ping(void* arg, grpc_error* error);
+static void start_keepalive_ping_locked(void* arg, grpc_error* error);
+static void finish_keepalive_ping_locked(void* arg, grpc_error* error);
+static void keepalive_watchdog_fired(void* arg, grpc_error* error);
+static void keepalive_watchdog_fired_locked(void* arg, grpc_error* error);
+
+static void reset_byte_stream(void* arg, grpc_error* error);
+
+// Flow control default enabled. Can be disabled by setting
+// GRPC_EXPERIMENTAL_DISABLE_FLOW_CONTROL
+bool g_flow_control_enabled = true;
+
+/*******************************************************************************
+ * CONSTRUCTION/DESTRUCTION/REFCOUNTING
+ */
+
+grpc_chttp2_transport::~grpc_chttp2_transport() {
+  size_t i;
+
+  if (channelz_socket != nullptr) {
+    channelz_socket.reset();
+  }
+
+  grpc_endpoint_destroy(ep);
+
+  grpc_slice_buffer_destroy_internal(&qbuf);
+
+  grpc_slice_buffer_destroy_internal(&outbuf);
+  grpc_chttp2_hpack_compressor_destroy(&hpack_compressor);
+
+  grpc_error* error =
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Transport destroyed");
+  // ContextList::Execute follows semantics of a callback function and does not
+  // take a ref on error
+  grpc_core::ContextList::Execute(cl, nullptr, error);
+  GRPC_ERROR_UNREF(error);
+  cl = nullptr;
+
+  grpc_slice_buffer_destroy_internal(&read_buffer);
+  grpc_chttp2_hpack_parser_destroy(&hpack_parser);
+  grpc_chttp2_goaway_parser_destroy(&goaway_parser);
+
+  for (i = 0; i < STREAM_LIST_COUNT; i++) {
+    GPR_ASSERT(lists[i].head == nullptr);
+    GPR_ASSERT(lists[i].tail == nullptr);
+  }
+
+  GRPC_ERROR_UNREF(goaway_error);
+
+  GPR_ASSERT(grpc_chttp2_stream_map_size(&stream_map) == 0);
+
+  grpc_chttp2_stream_map_destroy(&stream_map);
+
+  GRPC_COMBINER_UNREF(combiner, "chttp2_transport");
+
+  cancel_pings(this,
+               GRPC_ERROR_CREATE_FROM_STATIC_STRING("Transport destroyed"));
+
+  while (write_cb_pool) {
+    grpc_chttp2_write_cb* next = write_cb_pool->next;
+    gpr_free(write_cb_pool);
+    write_cb_pool = next;
+  }
+
+  flow_control.Destroy();
+
+  GRPC_ERROR_UNREF(closed_with_error);
+  gpr_free(ping_acks);
+  gpr_free(peer_string);
+}
+
+static const grpc_transport_vtable* get_vtable(void);
+
+/* Returns whether bdp is enabled */
+static bool read_channel_args(grpc_chttp2_transport* t,
+                              const grpc_channel_args* channel_args,
+                              bool is_client) {
+  bool enable_bdp = true;
+  bool channelz_enabled = GRPC_ENABLE_CHANNELZ_DEFAULT;
+  size_t i;
+  int j;
+
+  for (i = 0; i < channel_args->num_args; i++) {
+    if (0 == strcmp(channel_args->args[i].key,
+                    GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER)) {
+      const grpc_integer_options options = {-1, 0, INT_MAX};
+      const int value =
+          grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      if (value >= 0) {
+        if ((t->next_stream_id & 1) != (value & 1)) {
+          gpr_log(GPR_ERROR, "%s: low bit must be %d on %s",
+                  GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER, t->next_stream_id & 1,
+                  is_client ? "client" : "server");
+        } else {
+          t->next_stream_id = static_cast<uint32_t>(value);
+        }
+      }
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_ENCODER)) {
+      const grpc_integer_options options = {-1, 0, INT_MAX};
+      const int value =
+          grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      if (value >= 0) {
+        grpc_chttp2_hpack_compressor_set_max_usable_size(
+            &t->hpack_compressor, static_cast<uint32_t>(value));
+      }
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA)) {
+      t->ping_policy.max_pings_without_data = grpc_channel_arg_get_integer(
+          &channel_args->args[i],
+          {g_default_max_pings_without_data, 0, INT_MAX});
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_HTTP2_MAX_PING_STRIKES)) {
+      t->ping_policy.max_ping_strikes = grpc_channel_arg_get_integer(
+          &channel_args->args[i], {g_default_max_ping_strikes, 0, INT_MAX});
+    } else if (0 ==
+               strcmp(channel_args->args[i].key,
+                      GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS)) {
+      t->ping_policy.min_sent_ping_interval_without_data =
+          grpc_channel_arg_get_integer(
+              &channel_args->args[i],
+              grpc_integer_options{
+                  g_default_min_sent_ping_interval_without_data_ms, 0,
+                  INT_MAX});
+    } else if (0 ==
+               strcmp(channel_args->args[i].key,
+                      GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS)) {
+      t->ping_policy.min_recv_ping_interval_without_data =
+          grpc_channel_arg_get_integer(
+              &channel_args->args[i],
+              grpc_integer_options{
+                  g_default_min_recv_ping_interval_without_data_ms, 0,
+                  INT_MAX});
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE)) {
+      t->write_buffer_size = static_cast<uint32_t>(grpc_channel_arg_get_integer(
+          &channel_args->args[i], {0, 0, MAX_WRITE_BUFFER_SIZE}));
+    } else if (0 ==
+               strcmp(channel_args->args[i].key, GRPC_ARG_HTTP2_BDP_PROBE)) {
+      enable_bdp = grpc_channel_arg_get_bool(&channel_args->args[i], true);
+    } else if (0 ==
+               strcmp(channel_args->args[i].key, GRPC_ARG_KEEPALIVE_TIME_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &channel_args->args[i],
+          grpc_integer_options{t->is_client
+                                   ? g_default_client_keepalive_time_ms
+                                   : g_default_server_keepalive_time_ms,
+                               1, INT_MAX});
+      t->keepalive_time = value == INT_MAX ? GRPC_MILLIS_INF_FUTURE : value;
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_KEEPALIVE_TIMEOUT_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &channel_args->args[i],
+          grpc_integer_options{t->is_client
+                                   ? g_default_client_keepalive_timeout_ms
+                                   : g_default_server_keepalive_timeout_ms,
+                               0, INT_MAX});
+      t->keepalive_timeout = value == INT_MAX ? GRPC_MILLIS_INF_FUTURE : value;
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
+      t->keepalive_permit_without_calls = static_cast<uint32_t>(
+          grpc_channel_arg_get_integer(&channel_args->args[i], {0, 0, 1}));
+    } else if (0 == strcmp(channel_args->args[i].key,
+                           GRPC_ARG_OPTIMIZATION_TARGET)) {
+      gpr_log(GPR_INFO, "GRPC_ARG_OPTIMIZATION_TARGET is deprecated");
+    } else if (0 ==
+               strcmp(channel_args->args[i].key, GRPC_ARG_ENABLE_CHANNELZ)) {
+      channelz_enabled = grpc_channel_arg_get_bool(
+          &channel_args->args[i], GRPC_ENABLE_CHANNELZ_DEFAULT);
+    } else {
+      static const struct {
+        const char* channel_arg_name;
+        grpc_chttp2_setting_id setting_id;
+        grpc_integer_options integer_options;
+        bool availability[2] /* server, client */;
+      } settings_map[] = {{GRPC_ARG_MAX_CONCURRENT_STREAMS,
+                           GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS,
+                           {-1, 0, INT32_MAX},
+                           {true, false}},
+                          {GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_DECODER,
+                           GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE,
+                           {-1, 0, INT32_MAX},
+                           {true, true}},
+                          {GRPC_ARG_MAX_METADATA_SIZE,
+                           GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
+                           {-1, 0, INT32_MAX},
+                           {true, true}},
+                          {GRPC_ARG_HTTP2_MAX_FRAME_SIZE,
+                           GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE,
+                           {-1, 16384, 16777215},
+                           {true, true}},
+                          {GRPC_ARG_HTTP2_ENABLE_TRUE_BINARY,
+                           GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA,
+                           {1, 0, 1},
+                           {true, true}},
+                          {GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES,
+                           GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
+                           {-1, 5, INT32_MAX},
+                           {true, true}}};
+      for (j = 0; j < static_cast<int> GPR_ARRAY_SIZE(settings_map); j++) {
+        if (0 == strcmp(channel_args->args[i].key,
+                        settings_map[j].channel_arg_name)) {
+          if (!settings_map[j].availability[is_client]) {
+            gpr_log(GPR_DEBUG, "%s is not available on %s",
+                    settings_map[j].channel_arg_name,
+                    is_client ? "clients" : "servers");
+          } else {
+            int value = grpc_channel_arg_get_integer(
+                &channel_args->args[i], settings_map[j].integer_options);
+            if (value >= 0) {
+              queue_setting_update(t, settings_map[j].setting_id,
+                                   static_cast<uint32_t>(value));
+            }
+          }
+          break;
+        }
+      }
+    }
+  }
+  if (channelz_enabled) {
+    // TODO(ncteisen): add an API to endpoint to query for local addr, and pass
+    // it in here, so SocketNode knows its own address.
+    t->channelz_socket =
+        grpc_core::MakeRefCounted<grpc_core::channelz::SocketNode>(
+            "", t->peer_string,
+            absl::StrFormat("%s %s", get_vtable()->name, t->peer_string));
+  }
+  return enable_bdp;
+}
+
+static void init_transport_keepalive_settings(grpc_chttp2_transport* t) {
+  if (t->is_client) {
+    t->keepalive_time = g_default_client_keepalive_time_ms == INT_MAX
+                            ? GRPC_MILLIS_INF_FUTURE
+                            : g_default_client_keepalive_time_ms;
+    t->keepalive_timeout = g_default_client_keepalive_timeout_ms == INT_MAX
+                               ? GRPC_MILLIS_INF_FUTURE
+                               : g_default_client_keepalive_timeout_ms;
+    t->keepalive_permit_without_calls =
+        g_default_client_keepalive_permit_without_calls;
+  } else {
+    t->keepalive_time = g_default_server_keepalive_time_ms == INT_MAX
+                            ? GRPC_MILLIS_INF_FUTURE
+                            : g_default_server_keepalive_time_ms;
+    t->keepalive_timeout = g_default_server_keepalive_timeout_ms == INT_MAX
+                               ? GRPC_MILLIS_INF_FUTURE
+                               : g_default_server_keepalive_timeout_ms;
+    t->keepalive_permit_without_calls =
+        g_default_server_keepalive_permit_without_calls;
+  }
+}
+
+static void configure_transport_ping_policy(grpc_chttp2_transport* t) {
+  t->ping_policy.max_pings_without_data = g_default_max_pings_without_data;
+  t->ping_policy.min_sent_ping_interval_without_data =
+      g_default_min_sent_ping_interval_without_data_ms;
+  t->ping_policy.max_ping_strikes = g_default_max_ping_strikes;
+  t->ping_policy.min_recv_ping_interval_without_data =
+      g_default_min_recv_ping_interval_without_data_ms;
+}
+
+static void init_keepalive_pings_if_enabled(grpc_chttp2_transport* t) {
+  if (t->keepalive_time != GRPC_MILLIS_INF_FUTURE) {
+    t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_WAITING;
+    GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
+    GRPC_CLOSURE_INIT(&t->init_keepalive_ping_locked, init_keepalive_ping, t,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&t->keepalive_ping_timer,
+                    grpc_core::ExecCtx::Get()->Now() + t->keepalive_time,
+                    &t->init_keepalive_ping_locked);
+  } else {
+    /* Use GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED to indicate there are no
+       inflight keeaplive timers */
+    t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED;
+  }
+}
+
+grpc_chttp2_transport::grpc_chttp2_transport(
+    const grpc_channel_args* channel_args, grpc_endpoint* ep, bool is_client,
+    grpc_resource_user* resource_user)
+    : refs(1, &grpc_trace_chttp2_refcount),
+      ep(ep),
+      peer_string(grpc_endpoint_get_peer(ep)),
+      resource_user(resource_user),
+      combiner(grpc_combiner_create()),
+      state_tracker(is_client ? "client_transport" : "server_transport",
+                    GRPC_CHANNEL_READY),
+      is_client(is_client),
+      next_stream_id(is_client ? 1 : 2),
+      deframe_state(is_client ? GRPC_DTS_FH_0 : GRPC_DTS_CLIENT_PREFIX_0) {
+  GPR_ASSERT(strlen(GRPC_CHTTP2_CLIENT_CONNECT_STRING) ==
+             GRPC_CHTTP2_CLIENT_CONNECT_STRLEN);
+  base.vtable = get_vtable();
+  /* 8 is a random stab in the dark as to a good initial size: it's small enough
+     that it shouldn't waste memory for infrequently used connections, yet
+     large enough that the exponential growth should happen nicely when it's
+     needed.
+     TODO(ctiller): tune this */
+  grpc_chttp2_stream_map_init(&stream_map, 8);
+
+  grpc_slice_buffer_init(&read_buffer);
+  grpc_slice_buffer_init(&outbuf);
+  if (is_client) {
+    grpc_slice_buffer_add(&outbuf, grpc_slice_from_copied_string(
+                                       GRPC_CHTTP2_CLIENT_CONNECT_STRING));
+  }
+  grpc_chttp2_hpack_compressor_init(&hpack_compressor);
+  grpc_slice_buffer_init(&qbuf);
+  /* copy in initial settings to all setting sets */
+  size_t i;
+  int j;
+  for (i = 0; i < GRPC_CHTTP2_NUM_SETTINGS; i++) {
+    for (j = 0; j < GRPC_NUM_SETTING_SETS; j++) {
+      settings[j][i] = grpc_chttp2_settings_parameters[i].default_value;
+    }
+  }
+  grpc_chttp2_hpack_parser_init(&hpack_parser);
+  grpc_chttp2_goaway_parser_init(&goaway_parser);
+
+  /* configure http2 the way we like it */
+  if (is_client) {
+    queue_setting_update(this, GRPC_CHTTP2_SETTINGS_ENABLE_PUSH, 0);
+    queue_setting_update(this, GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 0);
+  }
+  queue_setting_update(this, GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
+                       DEFAULT_MAX_HEADER_LIST_SIZE);
+  queue_setting_update(this,
+                       GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA, 1);
+
+  configure_transport_ping_policy(this);
+  init_transport_keepalive_settings(this);
+
+  bool enable_bdp = true;
+  if (channel_args) {
+    enable_bdp = read_channel_args(this, channel_args, is_client);
+  }
+
+  if (g_flow_control_enabled) {
+    flow_control.Init<grpc_core::chttp2::TransportFlowControl>(this,
+                                                               enable_bdp);
+  } else {
+    flow_control.Init<grpc_core::chttp2::TransportFlowControlDisabled>(this);
+    enable_bdp = false;
+  }
+
+  /* No pings allowed before receiving a header or data frame. */
+  ping_state.pings_before_data_required = 0;
+  ping_state.is_delayed_ping_timer_set = false;
+  ping_state.last_ping_sent_time = GRPC_MILLIS_INF_PAST;
+
+  ping_recv_state.last_ping_recv_time = GRPC_MILLIS_INF_PAST;
+  ping_recv_state.ping_strikes = 0;
+
+  init_keepalive_pings_if_enabled(this);
+
+  if (enable_bdp) {
+    GRPC_CHTTP2_REF_TRANSPORT(this, "bdp_ping");
+    schedule_bdp_ping_locked(this);
+    grpc_chttp2_act_on_flowctl_action(flow_control->PeriodicUpdate(), this,
+                                      nullptr);
+  }
+
+  grpc_chttp2_initiate_write(this, GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE);
+  post_benign_reclaimer(this);
+}
+
+static void destroy_transport_locked(void* tp, grpc_error* /*error*/) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->destroying = 1;
+  close_transport_locked(
+      t, grpc_error_set_int(
+             GRPC_ERROR_CREATE_FROM_STATIC_STRING("Transport destroyed"),
+             GRPC_ERROR_INT_OCCURRED_DURING_WRITE, t->write_state));
+  // Must be the last line.
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "destroy");
+}
+
+static void destroy_transport(grpc_transport* gt) {
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  t->combiner->Run(GRPC_CLOSURE_CREATE(destroy_transport_locked, t, nullptr),
+                   GRPC_ERROR_NONE);
+}
+
+static void close_transport_locked(grpc_chttp2_transport* t,
+                                   grpc_error* error) {
+  end_all_the_calls(t, GRPC_ERROR_REF(error));
+  cancel_pings(t, GRPC_ERROR_REF(error));
+  if (t->closed_with_error == GRPC_ERROR_NONE) {
+    if (!grpc_error_has_clear_grpc_status(error)) {
+      error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS,
+                                 GRPC_STATUS_UNAVAILABLE);
+    }
+    if (t->write_state != GRPC_CHTTP2_WRITE_STATE_IDLE) {
+      if (t->close_transport_on_writes_finished == nullptr) {
+        t->close_transport_on_writes_finished =
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "Delayed close due to in-progress write");
+      }
+      t->close_transport_on_writes_finished =
+          grpc_error_add_child(t->close_transport_on_writes_finished, error);
+      return;
+    }
+    GPR_ASSERT(error != GRPC_ERROR_NONE);
+    t->closed_with_error = GRPC_ERROR_REF(error);
+    connectivity_state_set(t, GRPC_CHANNEL_SHUTDOWN, "close_transport");
+    if (t->ping_state.is_delayed_ping_timer_set) {
+      grpc_timer_cancel(&t->ping_state.delayed_ping_timer);
+    }
+    if (t->have_next_bdp_ping_timer) {
+      grpc_timer_cancel(&t->next_bdp_ping_timer);
+    }
+    switch (t->keepalive_state) {
+      case GRPC_CHTTP2_KEEPALIVE_STATE_WAITING:
+        grpc_timer_cancel(&t->keepalive_ping_timer);
+        break;
+      case GRPC_CHTTP2_KEEPALIVE_STATE_PINGING:
+        grpc_timer_cancel(&t->keepalive_ping_timer);
+        grpc_timer_cancel(&t->keepalive_watchdog_timer);
+        break;
+      case GRPC_CHTTP2_KEEPALIVE_STATE_DYING:
+      case GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED:
+        /* keepalive timers are not set in these two states */
+        break;
+    }
+
+    /* flush writable stream list to avoid dangling references */
+    grpc_chttp2_stream* s;
+    while (grpc_chttp2_list_pop_writable_stream(t, &s)) {
+      GRPC_CHTTP2_STREAM_UNREF(s, "chttp2_writing:close");
+    }
+    GPR_ASSERT(t->write_state == GRPC_CHTTP2_WRITE_STATE_IDLE);
+    grpc_endpoint_shutdown(t->ep, GRPC_ERROR_REF(error));
+  }
+  if (t->notify_on_receive_settings != nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, t->notify_on_receive_settings,
+                            GRPC_ERROR_CANCELLED);
+    t->notify_on_receive_settings = nullptr;
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+#ifndef NDEBUG
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s, const char* reason) {
+  grpc_stream_ref(s->refcount, reason);
+}
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s, const char* reason) {
+  grpc_stream_unref(s->refcount, reason);
+}
+#else
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s) {
+  grpc_stream_ref(s->refcount);
+}
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s) {
+  grpc_stream_unref(s->refcount);
+}
+#endif
+
+grpc_chttp2_stream::Reffer::Reffer(grpc_chttp2_stream* s) {
+  /* We reserve one 'active stream' that's dropped when the stream is
+     read-closed. The others are for Chttp2IncomingByteStreams that are
+     actively reading */
+  GRPC_CHTTP2_STREAM_REF(s, "chttp2");
+  GRPC_CHTTP2_REF_TRANSPORT(s->t, "stream");
+}
+
+grpc_chttp2_stream::grpc_chttp2_stream(grpc_chttp2_transport* t,
+                                       grpc_stream_refcount* refcount,
+                                       const void* server_data,
+                                       grpc_core::Arena* arena)
+    : t(t),
+      refcount(refcount),
+      reffer(this),
+      metadata_buffer{grpc_chttp2_incoming_metadata_buffer(arena),
+                      grpc_chttp2_incoming_metadata_buffer(arena)} {
+  if (server_data) {
+    id = static_cast<uint32_t>((uintptr_t)server_data);
+    *t->accepting_stream = this;
+    grpc_chttp2_stream_map_add(&t->stream_map, id, this);
+    post_destructive_reclaimer(t);
+  }
+  if (t->flow_control->flow_control_enabled()) {
+    flow_control.Init<grpc_core::chttp2::StreamFlowControl>(
+        static_cast<grpc_core::chttp2::TransportFlowControl*>(
+            t->flow_control.get()),
+        this);
+  } else {
+    flow_control.Init<grpc_core::chttp2::StreamFlowControlDisabled>();
+  }
+
+  grpc_slice_buffer_init(&frame_storage);
+  grpc_slice_buffer_init(&unprocessed_incoming_frames_buffer);
+  grpc_slice_buffer_init(&flow_controlled_buffer);
+  GRPC_CLOSURE_INIT(&reset_byte_stream, ::reset_byte_stream, this, nullptr);
+}
+
+grpc_chttp2_stream::~grpc_chttp2_stream() {
+  if (t->channelz_socket != nullptr) {
+    if ((t->is_client && eos_received) || (!t->is_client && eos_sent)) {
+      t->channelz_socket->RecordStreamSucceeded();
+    } else {
+      t->channelz_socket->RecordStreamFailed();
+    }
+  }
+
+  GPR_ASSERT((write_closed && read_closed) || id == 0);
+  if (id != 0) {
+    GPR_ASSERT(grpc_chttp2_stream_map_find(&t->stream_map, id) == nullptr);
+  }
+
+  grpc_slice_buffer_destroy_internal(&unprocessed_incoming_frames_buffer);
+  grpc_slice_buffer_destroy_internal(&frame_storage);
+  if (stream_compression_method != GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS) {
+    grpc_slice_buffer_destroy_internal(&compressed_data_buffer);
+  }
+  if (stream_decompression_method !=
+      GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS) {
+    grpc_slice_buffer_destroy_internal(&decompressed_data_buffer);
+  }
+
+  grpc_chttp2_list_remove_stalled_by_transport(t, this);
+  grpc_chttp2_list_remove_stalled_by_stream(t, this);
+
+  for (int i = 0; i < STREAM_LIST_COUNT; i++) {
+    if (GPR_UNLIKELY(included[i])) {
+      gpr_log(GPR_ERROR, "%s stream %d still included in list %d",
+              t->is_client ? "client" : "server", id, i);
+      abort();
+    }
+  }
+
+  GPR_ASSERT(send_initial_metadata_finished == nullptr);
+  GPR_ASSERT(fetching_send_message == nullptr);
+  GPR_ASSERT(send_trailing_metadata_finished == nullptr);
+  GPR_ASSERT(recv_initial_metadata_ready == nullptr);
+  GPR_ASSERT(recv_message_ready == nullptr);
+  GPR_ASSERT(recv_trailing_metadata_finished == nullptr);
+  grpc_slice_buffer_destroy_internal(&flow_controlled_buffer);
+  GRPC_ERROR_UNREF(read_closed_error);
+  GRPC_ERROR_UNREF(write_closed_error);
+  GRPC_ERROR_UNREF(byte_stream_error);
+
+  flow_control.Destroy();
+
+  if (t->resource_user != nullptr) {
+    grpc_resource_user_free(t->resource_user, GRPC_RESOURCE_QUOTA_CALL_SIZE);
+  }
+
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "stream");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, destroy_stream_arg, GRPC_ERROR_NONE);
+}
+
+static int init_stream(grpc_transport* gt, grpc_stream* gs,
+                       grpc_stream_refcount* refcount, const void* server_data,
+                       grpc_core::Arena* arena) {
+  GPR_TIMER_SCOPE("init_stream", 0);
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  new (gs) grpc_chttp2_stream(t, refcount, server_data, arena);
+  return 0;
+}
+
+static void destroy_stream_locked(void* sp, grpc_error* /*error*/) {
+  GPR_TIMER_SCOPE("destroy_stream", 0);
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(sp);
+  s->~grpc_chttp2_stream();
+}
+
+static void destroy_stream(grpc_transport* gt, grpc_stream* gs,
+                           grpc_closure* then_schedule_closure) {
+  GPR_TIMER_SCOPE("destroy_stream", 0);
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  grpc_chttp2_stream* s = reinterpret_cast<grpc_chttp2_stream*>(gs);
+  if (s->stream_compression_method !=
+          GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS &&
+      s->stream_compression_ctx != nullptr) {
+    grpc_stream_compression_context_destroy(s->stream_compression_ctx);
+    s->stream_compression_ctx = nullptr;
+  }
+  if (s->stream_decompression_method !=
+          GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS &&
+      s->stream_decompression_ctx != nullptr) {
+    grpc_stream_compression_context_destroy(s->stream_decompression_ctx);
+    s->stream_decompression_ctx = nullptr;
+  }
+
+  s->destroy_stream_arg = then_schedule_closure;
+  t->combiner->Run(
+      GRPC_CLOSURE_INIT(&s->destroy_stream, destroy_stream_locked, s, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+grpc_chttp2_stream* grpc_chttp2_parsing_accept_stream(grpc_chttp2_transport* t,
+                                                      uint32_t id) {
+  if (t->accept_stream_cb == nullptr) {
+    return nullptr;
+  }
+  // Don't accept the stream if memory quota doesn't allow. Note that we should
+  // simply refuse the stream here instead of canceling the stream after it's
+  // accepted since the latter will create the call which costs much memory.
+  if (t->resource_user != nullptr &&
+      !grpc_resource_user_safe_alloc(t->resource_user,
+                                     GRPC_RESOURCE_QUOTA_CALL_SIZE)) {
+    gpr_log(GPR_ERROR, "Memory exhausted, rejecting the stream.");
+    grpc_chttp2_add_rst_stream_to_next_write(t, id, GRPC_HTTP2_REFUSED_STREAM,
+                                             nullptr);
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM);
+    return nullptr;
+  }
+  grpc_chttp2_stream* accepting = nullptr;
+  GPR_ASSERT(t->accepting_stream == nullptr);
+  t->accepting_stream = &accepting;
+  t->accept_stream_cb(t->accept_stream_cb_user_data, &t->base,
+                      (void*)static_cast<uintptr_t>(id));
+  t->accepting_stream = nullptr;
+  return accepting;
+}
+
+/*******************************************************************************
+ * OUTPUT PROCESSING
+ */
+
+static const char* write_state_name(grpc_chttp2_write_state st) {
+  switch (st) {
+    case GRPC_CHTTP2_WRITE_STATE_IDLE:
+      return "IDLE";
+    case GRPC_CHTTP2_WRITE_STATE_WRITING:
+      return "WRITING";
+    case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE:
+      return "WRITING+MORE";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+static void set_write_state(grpc_chttp2_transport* t,
+                            grpc_chttp2_write_state st, const char* reason) {
+  GRPC_CHTTP2_IF_TRACING(
+      gpr_log(GPR_INFO, "W:%p %s [%s] state %s -> %s [%s]", t,
+              t->is_client ? "CLIENT" : "SERVER", t->peer_string,
+              write_state_name(t->write_state), write_state_name(st), reason));
+  t->write_state = st;
+  /* If the state is being reset back to idle, it means a write was just
+   * finished. Make sure all the run_after_write closures are scheduled.
+   *
+   * This is also our chance to close the transport if the transport was marked
+   * to be closed after all writes finish (for example, if we received a go-away
+   * from peer while we had some pending writes) */
+  if (st == GRPC_CHTTP2_WRITE_STATE_IDLE) {
+    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &t->run_after_write);
+    if (t->close_transport_on_writes_finished != nullptr) {
+      grpc_error* err = t->close_transport_on_writes_finished;
+      t->close_transport_on_writes_finished = nullptr;
+      close_transport_locked(t, err);
+    }
+  }
+}
+
+static void inc_initiate_write_reason(
+    grpc_chttp2_initiate_write_reason reason) {
+  switch (reason) {
+    case GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE();
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM();
+      break;
+  }
+}
+
+void grpc_chttp2_initiate_write(grpc_chttp2_transport* t,
+                                grpc_chttp2_initiate_write_reason reason) {
+  GPR_TIMER_SCOPE("grpc_chttp2_initiate_write", 0);
+
+  switch (t->write_state) {
+    case GRPC_CHTTP2_WRITE_STATE_IDLE:
+      inc_initiate_write_reason(reason);
+      set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING,
+                      grpc_chttp2_initiate_write_reason_string(reason));
+      GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
+      /* Note that the 'write_action_begin_locked' closure is being scheduled
+       * on the 'finally_scheduler' of t->combiner. This means that
+       * 'write_action_begin_locked' is called only *after* all the other
+       * closures (some of which are potentially initiating more writes on the
+       * transport) are executed on the t->combiner.
+       *
+       * The reason for scheduling on finally_scheduler is to make sure we batch
+       * as many writes as possible. 'write_action_begin_locked' is the function
+       * that gathers all the relevant bytes (which are at various places in the
+       * grpc_chttp2_transport structure) and append them to 'outbuf' field in
+       * grpc_chttp2_transport thereby batching what would have been potentially
+       * multiple write operations.
+       *
+       * Also, 'write_action_begin_locked' only gathers the bytes into outbuf.
+       * It does not call the endpoint to write the bytes. That is done by the
+       * 'write_action' (which is scheduled by 'write_action_begin_locked') */
+      t->combiner->FinallyRun(
+          GRPC_CLOSURE_INIT(&t->write_action_begin_locked,
+                            write_action_begin_locked, t, nullptr),
+          GRPC_ERROR_NONE);
+      break;
+    case GRPC_CHTTP2_WRITE_STATE_WRITING:
+      set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE,
+                      grpc_chttp2_initiate_write_reason_string(reason));
+      break;
+    case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE:
+      break;
+  }
+}
+
+void grpc_chttp2_mark_stream_writable(grpc_chttp2_transport* t,
+                                      grpc_chttp2_stream* s) {
+  if (t->closed_with_error == GRPC_ERROR_NONE &&
+      grpc_chttp2_list_add_writable_stream(t, s)) {
+    GRPC_CHTTP2_STREAM_REF(s, "chttp2_writing:become");
+  }
+}
+
+static const char* begin_writing_desc(bool partial) {
+  if (partial) {
+    return "begin partial write in background";
+  } else {
+    return "begin write in current thread";
+  }
+}
+
+static void write_action_begin_locked(void* gt, grpc_error* /*error_ignored*/) {
+  GPR_TIMER_SCOPE("write_action_begin_locked", 0);
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(gt);
+  GPR_ASSERT(t->write_state != GRPC_CHTTP2_WRITE_STATE_IDLE);
+  grpc_chttp2_begin_write_result r;
+  if (t->closed_with_error != GRPC_ERROR_NONE) {
+    r.writing = false;
+  } else {
+    r = grpc_chttp2_begin_write(t);
+  }
+  if (r.writing) {
+    if (r.partial) {
+      GRPC_STATS_INC_HTTP2_PARTIAL_WRITES();
+    }
+    set_write_state(t,
+                    r.partial ? GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE
+                              : GRPC_CHTTP2_WRITE_STATE_WRITING,
+                    begin_writing_desc(r.partial));
+    write_action(t, GRPC_ERROR_NONE);
+    if (t->reading_paused_on_pending_induced_frames) {
+      GPR_ASSERT(t->num_pending_induced_frames == 0);
+      /* We had paused reading, because we had many induced frames (SETTINGS
+       * ACK, PINGS ACK and RST_STREAMS) pending in t->qbuf. Now that we have
+       * been able to flush qbuf, we can resume reading. */
+      GRPC_CHTTP2_IF_TRACING(gpr_log(
+          GPR_INFO,
+          "transport %p : Resuming reading after being paused due to too "
+          "many unwritten SETTINGS ACK, PINGS ACK and RST_STREAM frames",
+          t));
+      t->reading_paused_on_pending_induced_frames = false;
+      continue_read_action_locked(t);
+    }
+  } else {
+    GRPC_STATS_INC_HTTP2_SPURIOUS_WRITES_BEGUN();
+    set_write_state(t, GRPC_CHTTP2_WRITE_STATE_IDLE, "begin writing nothing");
+    GRPC_CHTTP2_UNREF_TRANSPORT(t, "writing");
+  }
+}
+
+static void write_action(void* gt, grpc_error* /*error*/) {
+  GPR_TIMER_SCOPE("write_action", 0);
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(gt);
+  void* cl = t->cl;
+  t->cl = nullptr;
+  grpc_endpoint_write(
+      t->ep, &t->outbuf,
+      GRPC_CLOSURE_INIT(&t->write_action_end_locked, write_action_end, t,
+                        grpc_schedule_on_exec_ctx),
+      cl);
+}
+
+static void write_action_end(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->write_action_end_locked,
+                                     write_action_end_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+/* Callback from the grpc_endpoint after bytes have been written by calling
+ * sendmsg */
+static void write_action_end_locked(void* tp, grpc_error* error) {
+  GPR_TIMER_SCOPE("terminate_writing_with_lock", 0);
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+
+  bool closed = false;
+  if (error != GRPC_ERROR_NONE) {
+    close_transport_locked(t, GRPC_ERROR_REF(error));
+    closed = true;
+  }
+
+  if (t->sent_goaway_state == GRPC_CHTTP2_GOAWAY_SEND_SCHEDULED) {
+    t->sent_goaway_state = GRPC_CHTTP2_GOAWAY_SENT;
+    closed = true;
+    if (grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+      close_transport_locked(
+          t, GRPC_ERROR_CREATE_FROM_STATIC_STRING("goaway sent"));
+    }
+  }
+
+  switch (t->write_state) {
+    case GRPC_CHTTP2_WRITE_STATE_IDLE:
+      GPR_UNREACHABLE_CODE(break);
+    case GRPC_CHTTP2_WRITE_STATE_WRITING:
+      GPR_TIMER_MARK("state=writing", 0);
+      set_write_state(t, GRPC_CHTTP2_WRITE_STATE_IDLE, "finish writing");
+      break;
+    case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE:
+      GPR_TIMER_MARK("state=writing_stale_no_poller", 0);
+      set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING, "continue writing");
+      GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
+      // If the transport is closed, we will retry writing on the endpoint
+      // and next write may contain part of the currently serialized frames.
+      // So, we should only call the run_after_write callbacks when the next
+      // write finishes, or the callbacks will be invoked when the stream is
+      // closed.
+      if (!closed) {
+        grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &t->run_after_write);
+      }
+      t->combiner->FinallyRun(
+          GRPC_CLOSURE_INIT(&t->write_action_begin_locked,
+                            write_action_begin_locked, t, nullptr),
+          GRPC_ERROR_NONE);
+      break;
+  }
+
+  grpc_chttp2_end_write(t, GRPC_ERROR_REF(error));
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "writing");
+}
+
+// Dirties an HTTP2 setting to be sent out next time a writing path occurs.
+// If the change needs to occur immediately, manually initiate a write.
+static void queue_setting_update(grpc_chttp2_transport* t,
+                                 grpc_chttp2_setting_id id, uint32_t value) {
+  const grpc_chttp2_setting_parameters* sp =
+      &grpc_chttp2_settings_parameters[id];
+  uint32_t use_value = GPR_CLAMP(value, sp->min_value, sp->max_value);
+  if (use_value != value) {
+    gpr_log(GPR_INFO, "Requested parameter %s clamped from %d to %d", sp->name,
+            value, use_value);
+  }
+  if (use_value != t->settings[GRPC_LOCAL_SETTINGS][id]) {
+    t->settings[GRPC_LOCAL_SETTINGS][id] = use_value;
+    t->dirtied_local_settings = 1;
+  }
+}
+
+void grpc_chttp2_add_incoming_goaway(grpc_chttp2_transport* t,
+                                     uint32_t goaway_error,
+                                     uint32_t last_stream_id,
+                                     const grpc_slice& goaway_text) {
+  // Discard the error from a previous goaway frame (if any)
+  if (t->goaway_error != GRPC_ERROR_NONE) {
+    GRPC_ERROR_UNREF(t->goaway_error);
+  }
+  t->goaway_error = grpc_error_set_str(
+      grpc_error_set_int(
+          grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING("GOAWAY received"),
+              GRPC_ERROR_INT_HTTP2_ERROR, static_cast<intptr_t>(goaway_error)),
+          GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE),
+      GRPC_ERROR_STR_RAW_BYTES, goaway_text);
+
+  GRPC_CHTTP2_IF_TRACING(
+      gpr_log(GPR_INFO, "transport %p got goaway with last stream id %d", t,
+              last_stream_id));
+  /* We want to log this irrespective of whether http tracing is enabled if we
+   * received a GOAWAY with a non NO_ERROR code. */
+  if (goaway_error != GRPC_HTTP2_NO_ERROR) {
+    gpr_log(GPR_INFO, "%s: Got goaway [%d] err=%s", t->peer_string,
+            goaway_error, grpc_error_string(t->goaway_error));
+  }
+  /* When a client receives a GOAWAY with error code ENHANCE_YOUR_CALM and debug
+   * data equal to "too_many_pings", it should log the occurrence at a log level
+   * that is enabled by default and double the configured KEEPALIVE_TIME used
+   * for new connections on that channel. */
+  if (GPR_UNLIKELY(t->is_client &&
+                   goaway_error == GRPC_HTTP2_ENHANCE_YOUR_CALM &&
+                   grpc_slice_str_cmp(goaway_text, "too_many_pings") == 0)) {
+    gpr_log(GPR_ERROR,
+            "Received a GOAWAY with error code ENHANCE_YOUR_CALM and debug "
+            "data equal to \"too_many_pings\"");
+    double current_keepalive_time_ms = static_cast<double>(t->keepalive_time);
+    t->keepalive_time =
+        current_keepalive_time_ms > INT_MAX / KEEPALIVE_TIME_BACKOFF_MULTIPLIER
+            ? GRPC_MILLIS_INF_FUTURE
+            : static_cast<grpc_millis>(current_keepalive_time_ms *
+                                       KEEPALIVE_TIME_BACKOFF_MULTIPLIER);
+  }
+
+  /* lie: use transient failure from the transport to indicate goaway has been
+   * received */
+  connectivity_state_set(t, GRPC_CHANNEL_TRANSIENT_FAILURE, "got_goaway");
+}
+
+static void maybe_start_some_streams(grpc_chttp2_transport* t) {
+  grpc_chttp2_stream* s;
+  /* cancel out streams that haven't yet started if we have received a GOAWAY */
+  if (t->goaway_error != GRPC_ERROR_NONE) {
+    while (grpc_chttp2_list_pop_waiting_for_concurrency(t, &s)) {
+      grpc_chttp2_cancel_stream(
+          t, s,
+          grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING("GOAWAY received"),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    }
+    return;
+  }
+  /* start streams where we have free grpc_chttp2_stream ids and free
+   * concurrency */
+  while (t->next_stream_id <= MAX_CLIENT_STREAM_ID &&
+         grpc_chttp2_stream_map_size(&t->stream_map) <
+             t->settings[GRPC_PEER_SETTINGS]
+                        [GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS] &&
+         grpc_chttp2_list_pop_waiting_for_concurrency(t, &s)) {
+    /* safe since we can't (legally) be parsing this stream yet */
+    GRPC_CHTTP2_IF_TRACING(gpr_log(
+        GPR_INFO,
+        "HTTP:%s: Transport %p allocating new grpc_chttp2_stream %p to id %d",
+        t->is_client ? "CLI" : "SVR", t, s, t->next_stream_id));
+
+    GPR_ASSERT(s->id == 0);
+    s->id = t->next_stream_id;
+    t->next_stream_id += 2;
+
+    if (t->next_stream_id >= MAX_CLIENT_STREAM_ID) {
+      connectivity_state_set(t, GRPC_CHANNEL_TRANSIENT_FAILURE,
+                             "no_more_stream_ids");
+    }
+
+    grpc_chttp2_stream_map_add(&t->stream_map, s->id, s);
+    post_destructive_reclaimer(t);
+    grpc_chttp2_mark_stream_writable(t, s);
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM);
+  }
+  /* cancel out streams that will never be started */
+  if (t->next_stream_id >= MAX_CLIENT_STREAM_ID) {
+    while (grpc_chttp2_list_pop_waiting_for_concurrency(t, &s)) {
+      grpc_chttp2_cancel_stream(
+          t, s,
+          grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING("Stream IDs exhausted"),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    }
+  }
+}
+
+/* Flag that this closure barrier may be covering a write in a pollset, and so
+   we should not complete this closure until we can prove that the write got
+   scheduled */
+#define CLOSURE_BARRIER_MAY_COVER_WRITE (1 << 0)
+/* First bit of the reference count, stored in the high order bits (with the low
+   bits being used for flags defined above) */
+#define CLOSURE_BARRIER_FIRST_REF_BIT (1 << 16)
+
+static grpc_closure* add_closure_barrier(grpc_closure* closure) {
+  closure->next_data.scratch += CLOSURE_BARRIER_FIRST_REF_BIT;
+  return closure;
+}
+
+static void null_then_sched_closure(grpc_closure** closure) {
+  grpc_closure* c = *closure;
+  *closure = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, c, GRPC_ERROR_NONE);
+}
+
+void grpc_chttp2_complete_closure_step(grpc_chttp2_transport* t,
+                                       grpc_chttp2_stream* /*s*/,
+                                       grpc_closure** pclosure,
+                                       grpc_error* error, const char* desc) {
+  grpc_closure* closure = *pclosure;
+  *pclosure = nullptr;
+  if (closure == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  closure->next_data.scratch -= CLOSURE_BARRIER_FIRST_REF_BIT;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    const char* errstr = grpc_error_string(error);
+    gpr_log(
+        GPR_INFO,
+        "complete_closure_step: t=%p %p refs=%d flags=0x%04x desc=%s err=%s "
+        "write_state=%s",
+        t, closure,
+        static_cast<int>(closure->next_data.scratch /
+                         CLOSURE_BARRIER_FIRST_REF_BIT),
+        static_cast<int>(closure->next_data.scratch %
+                         CLOSURE_BARRIER_FIRST_REF_BIT),
+        desc, errstr, write_state_name(t->write_state));
+  }
+  if (error != GRPC_ERROR_NONE) {
+    if (closure->error_data.error == GRPC_ERROR_NONE) {
+      closure->error_data.error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Error in HTTP transport completing operation");
+      closure->error_data.error = grpc_error_set_str(
+          closure->error_data.error, GRPC_ERROR_STR_TARGET_ADDRESS,
+          grpc_slice_from_copied_string(t->peer_string));
+    }
+    closure->error_data.error =
+        grpc_error_add_child(closure->error_data.error, error);
+  }
+  if (closure->next_data.scratch < CLOSURE_BARRIER_FIRST_REF_BIT) {
+    if ((t->write_state == GRPC_CHTTP2_WRITE_STATE_IDLE) ||
+        !(closure->next_data.scratch & CLOSURE_BARRIER_MAY_COVER_WRITE)) {
+      // Using GRPC_CLOSURE_SCHED instead of GRPC_CLOSURE_RUN to avoid running
+      // closures earlier than when it is safe to do so.
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure,
+                              closure->error_data.error);
+    } else {
+      grpc_closure_list_append(&t->run_after_write, closure,
+                               closure->error_data.error);
+    }
+  }
+}
+
+static bool contains_non_ok_status(grpc_metadata_batch* batch) {
+  if (batch->idx.named.grpc_status != nullptr) {
+    return !grpc_mdelem_static_value_eq(batch->idx.named.grpc_status->md,
+                                        GRPC_MDELEM_GRPC_STATUS_0);
+  }
+  return false;
+}
+
+static void maybe_become_writable_due_to_send_msg(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s) {
+  if (s->id != 0 && (!s->write_buffering ||
+                     s->flow_controlled_buffer.length > t->write_buffer_size)) {
+    grpc_chttp2_mark_stream_writable(t, s);
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE);
+  }
+}
+
+static void add_fetched_slice_locked(grpc_chttp2_transport* t,
+                                     grpc_chttp2_stream* s) {
+  s->fetched_send_message_length +=
+      static_cast<uint32_t> GRPC_SLICE_LENGTH(s->fetching_slice);
+  grpc_slice_buffer_add(&s->flow_controlled_buffer, s->fetching_slice);
+  maybe_become_writable_due_to_send_msg(t, s);
+}
+
+static void continue_fetching_send_locked(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s) {
+  for (;;) {
+    if (s->fetching_send_message == nullptr) {
+      /* Stream was cancelled before message fetch completed */
+      abort(); /* TODO(ctiller): what cleanup here? */
+      return;  /* early out */
+    }
+    if (s->fetched_send_message_length == s->fetching_send_message->length()) {
+      int64_t notify_offset = s->next_message_end_offset;
+      if (notify_offset <= s->flow_controlled_bytes_written) {
+        grpc_chttp2_complete_closure_step(
+            t, s, &s->fetching_send_message_finished, GRPC_ERROR_NONE,
+            "fetching_send_message_finished");
+      } else {
+        grpc_chttp2_write_cb* cb = t->write_cb_pool;
+        if (cb == nullptr) {
+          cb = static_cast<grpc_chttp2_write_cb*>(gpr_malloc(sizeof(*cb)));
+        } else {
+          t->write_cb_pool = cb->next;
+        }
+        cb->call_at_byte = notify_offset;
+        cb->closure = s->fetching_send_message_finished;
+        s->fetching_send_message_finished = nullptr;
+        grpc_chttp2_write_cb** list =
+            s->fetching_send_message->flags() & GRPC_WRITE_THROUGH
+                ? &s->on_write_finished_cbs
+                : &s->on_flow_controlled_cbs;
+        cb->next = *list;
+        *list = cb;
+      }
+      s->fetching_send_message.reset();
+      return; /* early out */
+    } else if (s->fetching_send_message->Next(
+                   UINT32_MAX, GRPC_CLOSURE_INIT(&s->complete_fetch_locked,
+                                                 ::complete_fetch, s,
+                                                 grpc_schedule_on_exec_ctx))) {
+      grpc_error* error = s->fetching_send_message->Pull(&s->fetching_slice);
+      if (error != GRPC_ERROR_NONE) {
+        s->fetching_send_message.reset();
+        grpc_chttp2_cancel_stream(t, s, error);
+      } else {
+        add_fetched_slice_locked(t, s);
+      }
+    }
+  }
+}
+
+static void complete_fetch(void* gs, grpc_error* error) {
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(gs);
+  s->t->combiner->Run(GRPC_CLOSURE_INIT(&s->complete_fetch_locked,
+                                        ::complete_fetch_locked, s, nullptr),
+                      GRPC_ERROR_REF(error));
+}
+
+static void complete_fetch_locked(void* gs, grpc_error* error) {
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(gs);
+  grpc_chttp2_transport* t = s->t;
+  if (error == GRPC_ERROR_NONE) {
+    error = s->fetching_send_message->Pull(&s->fetching_slice);
+    if (error == GRPC_ERROR_NONE) {
+      add_fetched_slice_locked(t, s);
+      continue_fetching_send_locked(t, s);
+    }
+  }
+  if (error != GRPC_ERROR_NONE) {
+    s->fetching_send_message.reset();
+    grpc_chttp2_cancel_stream(t, s, error);
+  }
+}
+
+static void log_metadata(const grpc_metadata_batch* md_batch, uint32_t id,
+                         bool is_client, bool is_initial) {
+  for (grpc_linked_mdelem* md = md_batch->list.head; md != nullptr;
+       md = md->next) {
+    char* key = grpc_slice_to_c_string(GRPC_MDKEY(md->md));
+    char* value = grpc_slice_to_c_string(GRPC_MDVALUE(md->md));
+    gpr_log(GPR_INFO, "HTTP:%d:%s:%s: %s: %s", id, is_initial ? "HDR" : "TRL",
+            is_client ? "CLI" : "SVR", key, value);
+    gpr_free(key);
+    gpr_free(value);
+  }
+}
+
+static void perform_stream_op_locked(void* stream_op,
+                                     grpc_error* /*error_ignored*/) {
+  GPR_TIMER_SCOPE("perform_stream_op_locked", 0);
+
+  grpc_transport_stream_op_batch* op =
+      static_cast<grpc_transport_stream_op_batch*>(stream_op);
+  grpc_chttp2_stream* s =
+      static_cast<grpc_chttp2_stream*>(op->handler_private.extra_arg);
+  grpc_transport_stream_op_batch_payload* op_payload = op->payload;
+  grpc_chttp2_transport* t = s->t;
+
+  GRPC_STATS_INC_HTTP2_OP_BATCHES();
+
+  s->context = op->payload->context;
+  s->traced = op->is_traced;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    char* str = grpc_transport_stream_op_batch_string(op);
+    gpr_log(GPR_INFO, "perform_stream_op_locked: %s; on_complete = %p", str,
+            op->on_complete);
+    gpr_free(str);
+    if (op->send_initial_metadata) {
+      log_metadata(op_payload->send_initial_metadata.send_initial_metadata,
+                   s->id, t->is_client, true);
+    }
+    if (op->send_trailing_metadata) {
+      log_metadata(op_payload->send_trailing_metadata.send_trailing_metadata,
+                   s->id, t->is_client, false);
+    }
+  }
+
+  grpc_closure* on_complete = op->on_complete;
+  // on_complete will be null if and only if there are no send ops in the batch.
+  if (on_complete != nullptr) {
+    // This batch has send ops. Use final_data as a barrier until enqueue time;
+    // the initial counter is dropped at the end of this function.
+    on_complete->next_data.scratch = CLOSURE_BARRIER_FIRST_REF_BIT;
+    on_complete->error_data.error = GRPC_ERROR_NONE;
+  }
+
+  if (op->cancel_stream) {
+    GRPC_STATS_INC_HTTP2_OP_CANCEL();
+    grpc_chttp2_cancel_stream(t, s, op_payload->cancel_stream.cancel_error);
+  }
+
+  if (op->send_initial_metadata) {
+    if (t->is_client && t->channelz_socket != nullptr) {
+      t->channelz_socket->RecordStreamStartedFromLocal();
+    }
+    GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA();
+    GPR_ASSERT(s->send_initial_metadata_finished == nullptr);
+    on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
+
+    /* Identify stream compression */
+    if (op_payload->send_initial_metadata.send_initial_metadata->idx.named
+                .content_encoding == nullptr ||
+        grpc_stream_compression_method_parse(
+            GRPC_MDVALUE(
+                op_payload->send_initial_metadata.send_initial_metadata->idx
+                    .named.content_encoding->md),
+            true, &s->stream_compression_method) == 0) {
+      s->stream_compression_method = GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS;
+    }
+    if (s->stream_compression_method !=
+        GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS) {
+      s->uncompressed_data_size = 0;
+      s->stream_compression_ctx = nullptr;
+      grpc_slice_buffer_init(&s->compressed_data_buffer);
+    }
+    s->send_initial_metadata_finished = add_closure_barrier(on_complete);
+    s->send_initial_metadata =
+        op_payload->send_initial_metadata.send_initial_metadata;
+    const size_t metadata_size =
+        grpc_metadata_batch_size(s->send_initial_metadata);
+    const size_t metadata_peer_limit =
+        t->settings[GRPC_PEER_SETTINGS]
+                   [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+    if (t->is_client) {
+      s->deadline = GPR_MIN(s->deadline, s->send_initial_metadata->deadline);
+    }
+    if (metadata_size > metadata_peer_limit) {
+      grpc_chttp2_cancel_stream(
+          t, s,
+          grpc_error_set_int(
+              grpc_error_set_int(
+                  grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                         "to-be-sent initial metadata size "
+                                         "exceeds peer limit"),
+                                     GRPC_ERROR_INT_SIZE,
+                                     static_cast<intptr_t>(metadata_size)),
+                  GRPC_ERROR_INT_LIMIT,
+                  static_cast<intptr_t>(metadata_peer_limit)),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED));
+    } else {
+      if (contains_non_ok_status(s->send_initial_metadata)) {
+        s->seen_error = true;
+      }
+      if (!s->write_closed) {
+        if (t->is_client) {
+          if (t->closed_with_error == GRPC_ERROR_NONE) {
+            GPR_ASSERT(s->id == 0);
+            grpc_chttp2_list_add_waiting_for_concurrency(t, s);
+            maybe_start_some_streams(t);
+          } else {
+            grpc_chttp2_cancel_stream(
+                t, s,
+                grpc_error_set_int(
+                    GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                        "Transport closed", &t->closed_with_error, 1),
+                    GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+          }
+        } else {
+          GPR_ASSERT(s->id != 0);
+          grpc_chttp2_mark_stream_writable(t, s);
+          if (!(op->send_message &&
+                (op->payload->send_message.send_message->flags() &
+                 GRPC_WRITE_BUFFER_HINT))) {
+            grpc_chttp2_initiate_write(
+                t, GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA);
+          }
+        }
+      } else {
+        s->send_initial_metadata = nullptr;
+        grpc_chttp2_complete_closure_step(
+            t, s, &s->send_initial_metadata_finished,
+            GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                "Attempt to send initial metadata after stream was closed",
+                &s->write_closed_error, 1),
+            "send_initial_metadata_finished");
+      }
+    }
+    if (op_payload->send_initial_metadata.peer_string != nullptr) {
+      gpr_atm_rel_store(op_payload->send_initial_metadata.peer_string,
+                        (gpr_atm)t->peer_string);
+    }
+  }
+
+  if (op->send_message) {
+    GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE();
+    t->num_messages_in_next_write++;
+    GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(
+        op->payload->send_message.send_message->length());
+    on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
+    s->fetching_send_message_finished = add_closure_barrier(op->on_complete);
+    if (s->write_closed) {
+      op->payload->send_message.stream_write_closed = true;
+      // We should NOT return an error here, so as to avoid a cancel OP being
+      // started. The surface layer will notice that the stream has been closed
+      // for writes and fail the send message op.
+      op->payload->send_message.send_message.reset();
+      grpc_chttp2_complete_closure_step(
+          t, s, &s->fetching_send_message_finished, GRPC_ERROR_NONE,
+          "fetching_send_message_finished");
+    } else {
+      GPR_ASSERT(s->fetching_send_message == nullptr);
+      uint8_t* frame_hdr = grpc_slice_buffer_tiny_add(
+          &s->flow_controlled_buffer, GRPC_HEADER_SIZE_IN_BYTES);
+      uint32_t flags = op_payload->send_message.send_message->flags();
+      frame_hdr[0] = (flags & GRPC_WRITE_INTERNAL_COMPRESS) != 0;
+      size_t len = op_payload->send_message.send_message->length();
+      frame_hdr[1] = static_cast<uint8_t>(len >> 24);
+      frame_hdr[2] = static_cast<uint8_t>(len >> 16);
+      frame_hdr[3] = static_cast<uint8_t>(len >> 8);
+      frame_hdr[4] = static_cast<uint8_t>(len);
+      s->fetching_send_message =
+          std::move(op_payload->send_message.send_message);
+      s->fetched_send_message_length = 0;
+      s->next_message_end_offset =
+          s->flow_controlled_bytes_written +
+          static_cast<int64_t>(s->flow_controlled_buffer.length) +
+          static_cast<int64_t>(len);
+      if (flags & GRPC_WRITE_BUFFER_HINT) {
+        s->next_message_end_offset -= t->write_buffer_size;
+        s->write_buffering = true;
+      } else {
+        s->write_buffering = false;
+      }
+      continue_fetching_send_locked(t, s);
+      maybe_become_writable_due_to_send_msg(t, s);
+    }
+  }
+
+  if (op->send_trailing_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA();
+    GPR_ASSERT(s->send_trailing_metadata_finished == nullptr);
+    on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
+    s->send_trailing_metadata_finished = add_closure_barrier(on_complete);
+    s->send_trailing_metadata =
+        op_payload->send_trailing_metadata.send_trailing_metadata;
+    s->write_buffering = false;
+    const size_t metadata_size =
+        grpc_metadata_batch_size(s->send_trailing_metadata);
+    const size_t metadata_peer_limit =
+        t->settings[GRPC_PEER_SETTINGS]
+                   [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+    if (metadata_size > metadata_peer_limit) {
+      grpc_chttp2_cancel_stream(
+          t, s,
+          grpc_error_set_int(
+              grpc_error_set_int(
+                  grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                         "to-be-sent trailing metadata size "
+                                         "exceeds peer limit"),
+                                     GRPC_ERROR_INT_SIZE,
+                                     static_cast<intptr_t>(metadata_size)),
+                  GRPC_ERROR_INT_LIMIT,
+                  static_cast<intptr_t>(metadata_peer_limit)),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED));
+    } else {
+      if (contains_non_ok_status(s->send_trailing_metadata)) {
+        s->seen_error = true;
+      }
+      if (s->write_closed) {
+        s->send_trailing_metadata = nullptr;
+        grpc_chttp2_complete_closure_step(
+            t, s, &s->send_trailing_metadata_finished,
+            grpc_metadata_batch_is_empty(
+                op->payload->send_trailing_metadata.send_trailing_metadata)
+                ? GRPC_ERROR_NONE
+                : GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                      "Attempt to send trailing metadata after "
+                      "stream was closed"),
+            "send_trailing_metadata_finished");
+      } else if (s->id != 0) {
+        /* TODO(ctiller): check if there's flow control for any outstanding
+           bytes before going writable */
+        grpc_chttp2_mark_stream_writable(t, s);
+        grpc_chttp2_initiate_write(
+            t, GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA);
+      }
+    }
+  }
+
+  if (op->recv_initial_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA();
+    GPR_ASSERT(s->recv_initial_metadata_ready == nullptr);
+    s->recv_initial_metadata_ready =
+        op_payload->recv_initial_metadata.recv_initial_metadata_ready;
+    s->recv_initial_metadata =
+        op_payload->recv_initial_metadata.recv_initial_metadata;
+    s->trailing_metadata_available =
+        op_payload->recv_initial_metadata.trailing_metadata_available;
+    if (op_payload->recv_initial_metadata.peer_string != nullptr) {
+      gpr_atm_rel_store(op_payload->recv_initial_metadata.peer_string,
+                        (gpr_atm)t->peer_string);
+    }
+    grpc_chttp2_maybe_complete_recv_initial_metadata(t, s);
+  }
+
+  if (op->recv_message) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE();
+    size_t before = 0;
+    GPR_ASSERT(s->recv_message_ready == nullptr);
+    GPR_ASSERT(!s->pending_byte_stream);
+    s->recv_message_ready = op_payload->recv_message.recv_message_ready;
+    s->recv_message = op_payload->recv_message.recv_message;
+    if (s->id != 0) {
+      if (!s->read_closed) {
+        before = s->frame_storage.length +
+                 s->unprocessed_incoming_frames_buffer.length;
+      }
+    }
+    grpc_chttp2_maybe_complete_recv_message(t, s);
+    if (s->id != 0) {
+      if (!s->read_closed && s->frame_storage.length == 0) {
+        size_t after = s->frame_storage.length +
+                       s->unprocessed_incoming_frames_buffer_cached_length;
+        s->flow_control->IncomingByteStreamUpdate(GRPC_HEADER_SIZE_IN_BYTES,
+                                                  before - after);
+        grpc_chttp2_act_on_flowctl_action(s->flow_control->MakeAction(), t, s);
+      }
+    }
+  }
+
+  if (op->recv_trailing_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA();
+    GPR_ASSERT(s->collecting_stats == nullptr);
+    s->collecting_stats = op_payload->recv_trailing_metadata.collect_stats;
+    GPR_ASSERT(s->recv_trailing_metadata_finished == nullptr);
+    s->recv_trailing_metadata_finished =
+        op_payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    s->recv_trailing_metadata =
+        op_payload->recv_trailing_metadata.recv_trailing_metadata;
+    s->final_metadata_requested = true;
+    grpc_chttp2_maybe_complete_recv_trailing_metadata(t, s);
+  }
+
+  if (on_complete != nullptr) {
+    grpc_chttp2_complete_closure_step(t, s, &on_complete, GRPC_ERROR_NONE,
+                                      "op->on_complete");
+  }
+
+  GRPC_CHTTP2_STREAM_UNREF(s, "perform_stream_op");
+}
+
+static void perform_stream_op(grpc_transport* gt, grpc_stream* gs,
+                              grpc_transport_stream_op_batch* op) {
+  GPR_TIMER_SCOPE("perform_stream_op", 0);
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  grpc_chttp2_stream* s = reinterpret_cast<grpc_chttp2_stream*>(gs);
+
+  if (!t->is_client) {
+    if (op->send_initial_metadata) {
+      grpc_millis deadline =
+          op->payload->send_initial_metadata.send_initial_metadata->deadline;
+      GPR_ASSERT(deadline == GRPC_MILLIS_INF_FUTURE);
+    }
+    if (op->send_trailing_metadata) {
+      grpc_millis deadline =
+          op->payload->send_trailing_metadata.send_trailing_metadata->deadline;
+      GPR_ASSERT(deadline == GRPC_MILLIS_INF_FUTURE);
+    }
+  }
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    char* str = grpc_transport_stream_op_batch_string(op);
+    gpr_log(GPR_INFO, "perform_stream_op[s=%p]: %s", s, str);
+    gpr_free(str);
+  }
+
+  GRPC_CHTTP2_STREAM_REF(s, "perform_stream_op");
+  op->handler_private.extra_arg = gs;
+  t->combiner->Run(GRPC_CLOSURE_INIT(&op->handler_private.closure,
+                                     perform_stream_op_locked, op, nullptr),
+                   GRPC_ERROR_NONE);
+}
+
+static void cancel_pings(grpc_chttp2_transport* t, grpc_error* error) {
+  /* callback remaining pings: they're not allowed to call into the transport,
+     and maybe they hold resources that need to be freed */
+  grpc_chttp2_ping_queue* pq = &t->ping_queue;
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  for (size_t j = 0; j < GRPC_CHTTP2_PCL_COUNT; j++) {
+    grpc_closure_list_fail_all(&pq->lists[j], GRPC_ERROR_REF(error));
+    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &pq->lists[j]);
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static void send_ping_locked(grpc_chttp2_transport* t,
+                             grpc_closure* on_initiate, grpc_closure* on_ack) {
+  if (t->closed_with_error != GRPC_ERROR_NONE) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_initiate,
+                            GRPC_ERROR_REF(t->closed_with_error));
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_ack,
+                            GRPC_ERROR_REF(t->closed_with_error));
+    return;
+  }
+  grpc_chttp2_ping_queue* pq = &t->ping_queue;
+  grpc_closure_list_append(&pq->lists[GRPC_CHTTP2_PCL_INITIATE], on_initiate,
+                           GRPC_ERROR_NONE);
+  grpc_closure_list_append(&pq->lists[GRPC_CHTTP2_PCL_NEXT], on_ack,
+                           GRPC_ERROR_NONE);
+}
+
+/*
+ * Specialized form of send_ping_locked for keepalive ping. If there is already
+ * a ping in progress, the keepalive ping would piggyback onto that ping,
+ * instead of waiting for that ping to complete and then starting a new ping.
+ */
+static void send_keepalive_ping_locked(grpc_chttp2_transport* t) {
+  if (t->closed_with_error != GRPC_ERROR_NONE) {
+    t->combiner->Run(GRPC_CLOSURE_INIT(&t->start_keepalive_ping_locked,
+                                       start_keepalive_ping_locked, t, nullptr),
+                     GRPC_ERROR_REF(t->closed_with_error));
+    t->combiner->Run(
+        GRPC_CLOSURE_INIT(&t->finish_keepalive_ping_locked,
+                          finish_keepalive_ping_locked, t, nullptr),
+        GRPC_ERROR_REF(t->closed_with_error));
+    return;
+  }
+  grpc_chttp2_ping_queue* pq = &t->ping_queue;
+  if (!grpc_closure_list_empty(pq->lists[GRPC_CHTTP2_PCL_INFLIGHT])) {
+    /* There is a ping in flight. Add yourself to the inflight closure list. */
+    t->combiner->Run(GRPC_CLOSURE_INIT(&t->start_keepalive_ping_locked,
+                                       start_keepalive_ping_locked, t, nullptr),
+                     GRPC_ERROR_REF(t->closed_with_error));
+    grpc_closure_list_append(
+        &pq->lists[GRPC_CHTTP2_PCL_INFLIGHT],
+        GRPC_CLOSURE_INIT(&t->finish_keepalive_ping_locked,
+                          finish_keepalive_ping, t, grpc_schedule_on_exec_ctx),
+        GRPC_ERROR_NONE);
+    return;
+  }
+  grpc_closure_list_append(
+      &pq->lists[GRPC_CHTTP2_PCL_INITIATE],
+      GRPC_CLOSURE_INIT(&t->start_keepalive_ping_locked, start_keepalive_ping,
+                        t, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_NONE);
+  grpc_closure_list_append(
+      &pq->lists[GRPC_CHTTP2_PCL_NEXT],
+      GRPC_CLOSURE_INIT(&t->finish_keepalive_ping_locked, finish_keepalive_ping,
+                        t, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_NONE);
+}
+
+void grpc_chttp2_retry_initiate_ping(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->retry_initiate_ping_locked,
+                                     retry_initiate_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void retry_initiate_ping_locked(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->ping_state.is_delayed_ping_timer_set = false;
+  if (error == GRPC_ERROR_NONE) {
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING);
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "retry_initiate_ping_locked");
+}
+
+void grpc_chttp2_ack_ping(grpc_chttp2_transport* t, uint64_t id) {
+  grpc_chttp2_ping_queue* pq = &t->ping_queue;
+  if (pq->inflight_id != id) {
+    char* from = grpc_endpoint_get_peer(t->ep);
+    gpr_log(GPR_DEBUG, "Unknown ping response from %s: %" PRIx64, from, id);
+    gpr_free(from);
+    return;
+  }
+  grpc_core::ExecCtx::RunList(DEBUG_LOCATION,
+                              &pq->lists[GRPC_CHTTP2_PCL_INFLIGHT]);
+  if (!grpc_closure_list_empty(pq->lists[GRPC_CHTTP2_PCL_NEXT])) {
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS);
+  }
+}
+
+static void send_goaway(grpc_chttp2_transport* t, grpc_error* error) {
+  /* We want to log this irrespective of whether http tracing is enabled */
+  gpr_log(GPR_INFO, "%s: Sending goaway err=%s", t->peer_string,
+          grpc_error_string(error));
+  t->sent_goaway_state = GRPC_CHTTP2_GOAWAY_SEND_SCHEDULED;
+  grpc_http2_error_code http_error;
+  grpc_slice slice;
+  grpc_error_get_status(error, GRPC_MILLIS_INF_FUTURE, nullptr, &slice,
+                        &http_error, nullptr);
+  grpc_chttp2_goaway_append(t->last_new_stream_id,
+                            static_cast<uint32_t>(http_error),
+                            grpc_slice_ref_internal(slice), &t->qbuf);
+  grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT);
+  GRPC_ERROR_UNREF(error);
+}
+
+void grpc_chttp2_add_ping_strike(grpc_chttp2_transport* t) {
+  if (++t->ping_recv_state.ping_strikes > t->ping_policy.max_ping_strikes &&
+      t->ping_policy.max_ping_strikes != 0) {
+    send_goaway(t,
+                grpc_error_set_int(
+                    GRPC_ERROR_CREATE_FROM_STATIC_STRING("too_many_pings"),
+                    GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_ENHANCE_YOUR_CALM));
+    /*The transport will be closed after the write is done */
+    close_transport_locked(
+        t, grpc_error_set_int(
+               GRPC_ERROR_CREATE_FROM_STATIC_STRING("Too many pings"),
+               GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+  }
+}
+
+static void perform_transport_op_locked(void* stream_op,
+                                        grpc_error* /*error_ignored*/) {
+  grpc_transport_op* op = static_cast<grpc_transport_op*>(stream_op);
+  grpc_chttp2_transport* t =
+      static_cast<grpc_chttp2_transport*>(op->handler_private.extra_arg);
+
+  if (op->goaway_error) {
+    send_goaway(t, op->goaway_error);
+  }
+
+  if (op->set_accept_stream) {
+    t->accept_stream_cb = op->set_accept_stream_fn;
+    t->accept_stream_cb_user_data = op->set_accept_stream_user_data;
+  }
+
+  if (op->bind_pollset) {
+    grpc_endpoint_add_to_pollset(t->ep, op->bind_pollset);
+  }
+
+  if (op->bind_pollset_set) {
+    grpc_endpoint_add_to_pollset_set(t->ep, op->bind_pollset_set);
+  }
+
+  if (op->send_ping.on_initiate != nullptr || op->send_ping.on_ack != nullptr) {
+    send_ping_locked(t, op->send_ping.on_initiate, op->send_ping.on_ack);
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING);
+  }
+
+  if (op->start_connectivity_watch != nullptr) {
+    t->state_tracker.AddWatcher(op->start_connectivity_watch_state,
+                                std::move(op->start_connectivity_watch));
+  }
+  if (op->stop_connectivity_watch != nullptr) {
+    t->state_tracker.RemoveWatcher(op->stop_connectivity_watch);
+  }
+
+  if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+    close_transport_locked(t, op->disconnect_with_error);
+  }
+
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, op->on_consumed, GRPC_ERROR_NONE);
+
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "transport_op");
+}
+
+static void perform_transport_op(grpc_transport* gt, grpc_transport_op* op) {
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    char* msg = grpc_transport_op_string(op);
+    gpr_log(GPR_INFO, "perform_transport_op[t=%p]: %s", t, msg);
+    gpr_free(msg);
+  }
+  op->handler_private.extra_arg = gt;
+  GRPC_CHTTP2_REF_TRANSPORT(t, "transport_op");
+  t->combiner->Run(GRPC_CLOSURE_INIT(&op->handler_private.closure,
+                                     perform_transport_op_locked, op, nullptr),
+                   GRPC_ERROR_NONE);
+}
+
+/*******************************************************************************
+ * INPUT PROCESSING - GENERAL
+ */
+
+void grpc_chttp2_maybe_complete_recv_initial_metadata(
+    grpc_chttp2_transport* /*t*/, grpc_chttp2_stream* s) {
+  if (s->recv_initial_metadata_ready != nullptr &&
+      s->published_metadata[0] != GRPC_METADATA_NOT_PUBLISHED) {
+    if (s->seen_error) {
+      grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+      if (!s->pending_byte_stream) {
+        grpc_slice_buffer_reset_and_unref_internal(
+            &s->unprocessed_incoming_frames_buffer);
+      }
+    }
+    grpc_chttp2_incoming_metadata_buffer_publish(&s->metadata_buffer[0],
+                                                 s->recv_initial_metadata);
+    null_then_sched_closure(&s->recv_initial_metadata_ready);
+  }
+}
+
+void grpc_chttp2_maybe_complete_recv_message(grpc_chttp2_transport* /*t*/,
+                                             grpc_chttp2_stream* s) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (s->recv_message_ready != nullptr) {
+    *s->recv_message = nullptr;
+    if (s->final_metadata_requested && s->seen_error) {
+      grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+      if (!s->pending_byte_stream) {
+        grpc_slice_buffer_reset_and_unref_internal(
+            &s->unprocessed_incoming_frames_buffer);
+      }
+    }
+    if (!s->pending_byte_stream) {
+      while (s->unprocessed_incoming_frames_buffer.length > 0 ||
+             s->frame_storage.length > 0) {
+        if (s->unprocessed_incoming_frames_buffer.length == 0) {
+          grpc_slice_buffer_swap(&s->unprocessed_incoming_frames_buffer,
+                                 &s->frame_storage);
+          s->unprocessed_incoming_frames_decompressed = false;
+        }
+        if (!s->unprocessed_incoming_frames_decompressed &&
+            s->stream_decompression_method !=
+                GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS) {
+          GPR_ASSERT(s->decompressed_data_buffer.length == 0);
+          bool end_of_context;
+          if (!s->stream_decompression_ctx) {
+            s->stream_decompression_ctx =
+                grpc_stream_compression_context_create(
+                    s->stream_decompression_method);
+          }
+          if (!grpc_stream_decompress(
+                  s->stream_decompression_ctx,
+                  &s->unprocessed_incoming_frames_buffer,
+                  &s->decompressed_data_buffer, nullptr,
+                  GRPC_HEADER_SIZE_IN_BYTES - s->decompressed_header_bytes,
+                  &end_of_context)) {
+            grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+            grpc_slice_buffer_reset_and_unref_internal(
+                &s->unprocessed_incoming_frames_buffer);
+            error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "Stream decompression error.");
+          } else {
+            s->decompressed_header_bytes += s->decompressed_data_buffer.length;
+            if (s->decompressed_header_bytes == GRPC_HEADER_SIZE_IN_BYTES) {
+              s->decompressed_header_bytes = 0;
+            }
+            error = grpc_deframe_unprocessed_incoming_frames(
+                &s->data_parser, s, &s->decompressed_data_buffer, nullptr,
+                s->recv_message);
+            if (end_of_context) {
+              grpc_stream_compression_context_destroy(
+                  s->stream_decompression_ctx);
+              s->stream_decompression_ctx = nullptr;
+            }
+          }
+        } else {
+          error = grpc_deframe_unprocessed_incoming_frames(
+              &s->data_parser, s, &s->unprocessed_incoming_frames_buffer,
+              nullptr, s->recv_message);
+        }
+        if (error != GRPC_ERROR_NONE) {
+          s->seen_error = true;
+          grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+          grpc_slice_buffer_reset_and_unref_internal(
+              &s->unprocessed_incoming_frames_buffer);
+          break;
+        } else if (*s->recv_message != nullptr) {
+          break;
+        }
+      }
+    }
+    // save the length of the buffer before handing control back to application
+    // threads. Needed to support correct flow control bookkeeping
+    s->unprocessed_incoming_frames_buffer_cached_length =
+        s->unprocessed_incoming_frames_buffer.length;
+    if (error == GRPC_ERROR_NONE && *s->recv_message != nullptr) {
+      null_then_sched_closure(&s->recv_message_ready);
+    } else if (s->published_metadata[1] != GRPC_METADATA_NOT_PUBLISHED) {
+      *s->recv_message = nullptr;
+      null_then_sched_closure(&s->recv_message_ready);
+    }
+    GRPC_ERROR_UNREF(error);
+  }
+}
+
+void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_chttp2_transport* t,
+                                                       grpc_chttp2_stream* s) {
+  grpc_chttp2_maybe_complete_recv_message(t, s);
+  if (s->recv_trailing_metadata_finished != nullptr && s->read_closed &&
+      s->write_closed) {
+    if (s->seen_error || !t->is_client) {
+      grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+      if (!s->pending_byte_stream) {
+        grpc_slice_buffer_reset_and_unref_internal(
+            &s->unprocessed_incoming_frames_buffer);
+      }
+    }
+    bool pending_data = s->pending_byte_stream ||
+                        s->unprocessed_incoming_frames_buffer.length > 0;
+    if (s->read_closed && s->frame_storage.length > 0 && !pending_data &&
+        !s->seen_error && s->recv_trailing_metadata_finished != nullptr) {
+      /* Maybe some SYNC_FLUSH data is left in frame_storage. Consume them and
+       * maybe decompress the next 5 bytes in the stream. */
+      if (s->stream_decompression_method ==
+          GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS) {
+        grpc_slice_buffer_move_first(
+            &s->frame_storage,
+            GPR_MIN(s->frame_storage.length, GRPC_HEADER_SIZE_IN_BYTES),
+            &s->unprocessed_incoming_frames_buffer);
+        if (s->unprocessed_incoming_frames_buffer.length > 0) {
+          s->unprocessed_incoming_frames_decompressed = true;
+          pending_data = true;
+        }
+      } else {
+        bool end_of_context;
+        if (!s->stream_decompression_ctx) {
+          s->stream_decompression_ctx = grpc_stream_compression_context_create(
+              s->stream_decompression_method);
+        }
+        if (!grpc_stream_decompress(
+                s->stream_decompression_ctx, &s->frame_storage,
+                &s->unprocessed_incoming_frames_buffer, nullptr,
+                GRPC_HEADER_SIZE_IN_BYTES, &end_of_context)) {
+          grpc_slice_buffer_reset_and_unref_internal(&s->frame_storage);
+          grpc_slice_buffer_reset_and_unref_internal(
+              &s->unprocessed_incoming_frames_buffer);
+          s->seen_error = true;
+        } else {
+          if (s->unprocessed_incoming_frames_buffer.length > 0) {
+            s->unprocessed_incoming_frames_decompressed = true;
+            pending_data = true;
+          }
+          if (end_of_context) {
+            grpc_stream_compression_context_destroy(
+                s->stream_decompression_ctx);
+            s->stream_decompression_ctx = nullptr;
+          }
+        }
+      }
+    }
+    if (s->read_closed && s->frame_storage.length == 0 && !pending_data &&
+        s->recv_trailing_metadata_finished != nullptr) {
+      grpc_transport_move_stats(&s->stats, s->collecting_stats);
+      s->collecting_stats = nullptr;
+      grpc_chttp2_incoming_metadata_buffer_publish(&s->metadata_buffer[1],
+                                                   s->recv_trailing_metadata);
+      null_then_sched_closure(&s->recv_trailing_metadata_finished);
+    }
+  }
+}
+
+static void remove_stream(grpc_chttp2_transport* t, uint32_t id,
+                          grpc_error* error) {
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(
+      grpc_chttp2_stream_map_delete(&t->stream_map, id));
+  GPR_DEBUG_ASSERT(s);
+  if (t->incoming_stream == s) {
+    t->incoming_stream = nullptr;
+    grpc_chttp2_parsing_become_skip_parser(t);
+  }
+  if (s->pending_byte_stream) {
+    if (s->on_next != nullptr) {
+      grpc_core::Chttp2IncomingByteStream* bs = s->data_parser.parsing_frame;
+      if (error == GRPC_ERROR_NONE) {
+        error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Truncated message");
+      }
+      bs->PublishError(error);
+      bs->Unref();
+      s->data_parser.parsing_frame = nullptr;
+    } else {
+      GRPC_ERROR_UNREF(s->byte_stream_error);
+      s->byte_stream_error = GRPC_ERROR_REF(error);
+    }
+  }
+
+  if (grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+    post_benign_reclaimer(t);
+    if (t->sent_goaway_state == GRPC_CHTTP2_GOAWAY_SENT) {
+      close_transport_locked(
+          t, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                 "Last stream closed after sending GOAWAY", &error, 1));
+    }
+  }
+  if (grpc_chttp2_list_remove_writable_stream(t, s)) {
+    GRPC_CHTTP2_STREAM_UNREF(s, "chttp2_writing:remove_stream");
+  }
+
+  GRPC_ERROR_UNREF(error);
+
+  maybe_start_some_streams(t);
+}
+
+void grpc_chttp2_cancel_stream(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                               grpc_error* due_to_error) {
+  if (!t->is_client && !s->sent_trailing_metadata &&
+      grpc_error_has_clear_grpc_status(due_to_error)) {
+    close_from_api(t, s, due_to_error);
+    return;
+  }
+
+  if (!s->read_closed || !s->write_closed) {
+    if (s->id != 0) {
+      grpc_http2_error_code http_error;
+      grpc_error_get_status(due_to_error, s->deadline, nullptr, nullptr,
+                            &http_error, nullptr);
+      grpc_chttp2_add_rst_stream_to_next_write(
+          t, s->id, static_cast<uint32_t>(http_error), &s->stats.outgoing);
+      grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM);
+    }
+  }
+  if (due_to_error != GRPC_ERROR_NONE && !s->seen_error) {
+    s->seen_error = true;
+  }
+  grpc_chttp2_mark_stream_closed(t, s, 1, 1, due_to_error);
+}
+
+void grpc_chttp2_fake_status(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                             grpc_error* error) {
+  grpc_status_code status;
+  grpc_slice slice;
+  grpc_error_get_status(error, s->deadline, &status, &slice, nullptr, nullptr);
+  if (status != GRPC_STATUS_OK) {
+    s->seen_error = true;
+  }
+  /* stream_global->recv_trailing_metadata_finished gives us a
+     last chance replacement: we've received trailing metadata,
+     but something more important has become available to signal
+     to the upper layers - drop what we've got, and then publish
+     what we want - which is safe because we haven't told anyone
+     about the metadata yet */
+  if (s->published_metadata[1] == GRPC_METADATA_NOT_PUBLISHED ||
+      s->recv_trailing_metadata_finished != nullptr) {
+    char status_string[GPR_LTOA_MIN_BUFSIZE];
+    gpr_ltoa(status, status_string);
+    GRPC_LOG_IF_ERROR("add_status",
+                      grpc_chttp2_incoming_metadata_buffer_replace_or_add(
+                          &s->metadata_buffer[1],
+                          grpc_mdelem_from_slices(
+                              GRPC_MDSTR_GRPC_STATUS,
+                              grpc_core::UnmanagedMemorySlice(status_string))));
+    if (!GRPC_SLICE_IS_EMPTY(slice)) {
+      GRPC_LOG_IF_ERROR(
+          "add_status_message",
+          grpc_chttp2_incoming_metadata_buffer_replace_or_add(
+              &s->metadata_buffer[1],
+              grpc_mdelem_create(GRPC_MDSTR_GRPC_MESSAGE, slice, nullptr)));
+    }
+    s->published_metadata[1] = GRPC_METADATA_SYNTHESIZED_FROM_FAKE;
+    grpc_chttp2_maybe_complete_recv_trailing_metadata(t, s);
+  }
+
+  GRPC_ERROR_UNREF(error);
+}
+
+static void add_error(grpc_error* error, grpc_error** refs, size_t* nrefs) {
+  if (error == GRPC_ERROR_NONE) return;
+  for (size_t i = 0; i < *nrefs; i++) {
+    if (error == refs[i]) {
+      return;
+    }
+  }
+  refs[*nrefs] = error;
+  ++*nrefs;
+}
+
+static grpc_error* removal_error(grpc_error* extra_error, grpc_chttp2_stream* s,
+                                 const char* master_error_msg) {
+  grpc_error* refs[3];
+  size_t nrefs = 0;
+  add_error(s->read_closed_error, refs, &nrefs);
+  add_error(s->write_closed_error, refs, &nrefs);
+  add_error(extra_error, refs, &nrefs);
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (nrefs > 0) {
+    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(master_error_msg,
+                                                             refs, nrefs);
+  }
+  GRPC_ERROR_UNREF(extra_error);
+  return error;
+}
+
+static void flush_write_list(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                             grpc_chttp2_write_cb** list, grpc_error* error) {
+  while (*list) {
+    grpc_chttp2_write_cb* cb = *list;
+    *list = cb->next;
+    grpc_chttp2_complete_closure_step(t, s, &cb->closure, GRPC_ERROR_REF(error),
+                                      "on_write_finished_cb");
+    cb->next = t->write_cb_pool;
+    t->write_cb_pool = cb;
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+void grpc_chttp2_fail_pending_writes(grpc_chttp2_transport* t,
+                                     grpc_chttp2_stream* s, grpc_error* error) {
+  error =
+      removal_error(error, s, "Pending writes failed due to stream closure");
+  s->send_initial_metadata = nullptr;
+  grpc_chttp2_complete_closure_step(t, s, &s->send_initial_metadata_finished,
+                                    GRPC_ERROR_REF(error),
+                                    "send_initial_metadata_finished");
+
+  s->send_trailing_metadata = nullptr;
+  grpc_chttp2_complete_closure_step(t, s, &s->send_trailing_metadata_finished,
+                                    GRPC_ERROR_REF(error),
+                                    "send_trailing_metadata_finished");
+
+  s->fetching_send_message.reset();
+  grpc_chttp2_complete_closure_step(t, s, &s->fetching_send_message_finished,
+                                    GRPC_ERROR_REF(error),
+                                    "fetching_send_message_finished");
+  flush_write_list(t, s, &s->on_write_finished_cbs, GRPC_ERROR_REF(error));
+  flush_write_list(t, s, &s->on_flow_controlled_cbs, error);
+}
+
+void grpc_chttp2_mark_stream_closed(grpc_chttp2_transport* t,
+                                    grpc_chttp2_stream* s, int close_reads,
+                                    int close_writes, grpc_error* error) {
+  if (s->read_closed && s->write_closed) {
+    /* already closed */
+    grpc_chttp2_maybe_complete_recv_trailing_metadata(t, s);
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  bool closed_read = false;
+  bool became_closed = false;
+  if (close_reads && !s->read_closed) {
+    s->read_closed_error = GRPC_ERROR_REF(error);
+    s->read_closed = true;
+    closed_read = true;
+  }
+  if (close_writes && !s->write_closed) {
+    s->write_closed_error = GRPC_ERROR_REF(error);
+    s->write_closed = true;
+    grpc_chttp2_fail_pending_writes(t, s, GRPC_ERROR_REF(error));
+  }
+  if (s->read_closed && s->write_closed) {
+    became_closed = true;
+    grpc_error* overall_error =
+        removal_error(GRPC_ERROR_REF(error), s, "Stream removed");
+    if (s->id != 0) {
+      remove_stream(t, s->id, GRPC_ERROR_REF(overall_error));
+    } else {
+      /* Purge streams waiting on concurrency still waiting for id assignment */
+      grpc_chttp2_list_remove_waiting_for_concurrency(t, s);
+    }
+    if (overall_error != GRPC_ERROR_NONE) {
+      grpc_chttp2_fake_status(t, s, overall_error);
+    }
+  }
+  if (closed_read) {
+    for (int i = 0; i < 2; i++) {
+      if (s->published_metadata[i] == GRPC_METADATA_NOT_PUBLISHED) {
+        s->published_metadata[i] = GRPC_METADATA_PUBLISHED_AT_CLOSE;
+      }
+    }
+    grpc_chttp2_maybe_complete_recv_initial_metadata(t, s);
+    grpc_chttp2_maybe_complete_recv_message(t, s);
+  }
+  if (became_closed) {
+    grpc_chttp2_maybe_complete_recv_trailing_metadata(t, s);
+    GRPC_CHTTP2_STREAM_UNREF(s, "chttp2");
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static void close_from_api(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                           grpc_error* error) {
+  grpc_slice hdr;
+  grpc_slice status_hdr;
+  grpc_slice http_status_hdr;
+  grpc_slice content_type_hdr;
+  grpc_slice message_pfx;
+  uint8_t* p;
+  uint32_t len = 0;
+  grpc_status_code grpc_status;
+  grpc_slice slice;
+  grpc_error_get_status(error, s->deadline, &grpc_status, &slice, nullptr,
+                        nullptr);
+
+  GPR_ASSERT(grpc_status >= 0 && (int)grpc_status < 100);
+
+  /* Hand roll a header block.
+     This is unnecessarily ugly - at some point we should find a more
+     elegant solution.
+     It's complicated by the fact that our send machinery would be dead by
+     the time we got around to sending this, so instead we ignore HPACK
+     compression and just write the uncompressed bytes onto the wire. */
+  if (!s->sent_initial_metadata) {
+    http_status_hdr = GRPC_SLICE_MALLOC(13);
+    p = GRPC_SLICE_START_PTR(http_status_hdr);
+    *p++ = 0x00;
+    *p++ = 7;
+    *p++ = ':';
+    *p++ = 's';
+    *p++ = 't';
+    *p++ = 'a';
+    *p++ = 't';
+    *p++ = 'u';
+    *p++ = 's';
+    *p++ = 3;
+    *p++ = '2';
+    *p++ = '0';
+    *p++ = '0';
+    GPR_ASSERT(p == GRPC_SLICE_END_PTR(http_status_hdr));
+    len += static_cast<uint32_t> GRPC_SLICE_LENGTH(http_status_hdr);
+
+    content_type_hdr = GRPC_SLICE_MALLOC(31);
+    p = GRPC_SLICE_START_PTR(content_type_hdr);
+    *p++ = 0x00;
+    *p++ = 12;
+    *p++ = 'c';
+    *p++ = 'o';
+    *p++ = 'n';
+    *p++ = 't';
+    *p++ = 'e';
+    *p++ = 'n';
+    *p++ = 't';
+    *p++ = '-';
+    *p++ = 't';
+    *p++ = 'y';
+    *p++ = 'p';
+    *p++ = 'e';
+    *p++ = 16;
+    *p++ = 'a';
+    *p++ = 'p';
+    *p++ = 'p';
+    *p++ = 'l';
+    *p++ = 'i';
+    *p++ = 'c';
+    *p++ = 'a';
+    *p++ = 't';
+    *p++ = 'i';
+    *p++ = 'o';
+    *p++ = 'n';
+    *p++ = '/';
+    *p++ = 'g';
+    *p++ = 'r';
+    *p++ = 'p';
+    *p++ = 'c';
+    GPR_ASSERT(p == GRPC_SLICE_END_PTR(content_type_hdr));
+    len += static_cast<uint32_t> GRPC_SLICE_LENGTH(content_type_hdr);
+  }
+
+  status_hdr = GRPC_SLICE_MALLOC(15 + (grpc_status >= 10));
+  p = GRPC_SLICE_START_PTR(status_hdr);
+  *p++ = 0x00; /* literal header, not indexed */
+  *p++ = 11;   /* len(grpc-status) */
+  *p++ = 'g';
+  *p++ = 'r';
+  *p++ = 'p';
+  *p++ = 'c';
+  *p++ = '-';
+  *p++ = 's';
+  *p++ = 't';
+  *p++ = 'a';
+  *p++ = 't';
+  *p++ = 'u';
+  *p++ = 's';
+  if (grpc_status < 10) {
+    *p++ = 1;
+    *p++ = static_cast<uint8_t>('0' + grpc_status);
+  } else {
+    *p++ = 2;
+    *p++ = static_cast<uint8_t>('0' + (grpc_status / 10));
+    *p++ = static_cast<uint8_t>('0' + (grpc_status % 10));
+  }
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(status_hdr));
+  len += static_cast<uint32_t> GRPC_SLICE_LENGTH(status_hdr);
+
+  size_t msg_len = GRPC_SLICE_LENGTH(slice);
+  GPR_ASSERT(msg_len <= UINT32_MAX);
+  uint32_t msg_len_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)msg_len, 1);
+  message_pfx = GRPC_SLICE_MALLOC(14 + msg_len_len);
+  p = GRPC_SLICE_START_PTR(message_pfx);
+  *p++ = 0x00; /* literal header, not indexed */
+  *p++ = 12;   /* len(grpc-message) */
+  *p++ = 'g';
+  *p++ = 'r';
+  *p++ = 'p';
+  *p++ = 'c';
+  *p++ = '-';
+  *p++ = 'm';
+  *p++ = 'e';
+  *p++ = 's';
+  *p++ = 's';
+  *p++ = 'a';
+  *p++ = 'g';
+  *p++ = 'e';
+  GRPC_CHTTP2_WRITE_VARINT((uint32_t)msg_len, 1, 0, p, (uint32_t)msg_len_len);
+  p += msg_len_len;
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(message_pfx));
+  len += static_cast<uint32_t> GRPC_SLICE_LENGTH(message_pfx);
+  len += static_cast<uint32_t>(msg_len);
+
+  hdr = GRPC_SLICE_MALLOC(9);
+  p = GRPC_SLICE_START_PTR(hdr);
+  *p++ = static_cast<uint8_t>(len >> 16);
+  *p++ = static_cast<uint8_t>(len >> 8);
+  *p++ = static_cast<uint8_t>(len);
+  *p++ = GRPC_CHTTP2_FRAME_HEADER;
+  *p++ = GRPC_CHTTP2_DATA_FLAG_END_STREAM | GRPC_CHTTP2_DATA_FLAG_END_HEADERS;
+  *p++ = static_cast<uint8_t>(s->id >> 24);
+  *p++ = static_cast<uint8_t>(s->id >> 16);
+  *p++ = static_cast<uint8_t>(s->id >> 8);
+  *p++ = static_cast<uint8_t>(s->id);
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(hdr));
+
+  grpc_slice_buffer_add(&t->qbuf, hdr);
+  if (!s->sent_initial_metadata) {
+    grpc_slice_buffer_add(&t->qbuf, http_status_hdr);
+    grpc_slice_buffer_add(&t->qbuf, content_type_hdr);
+  }
+  grpc_slice_buffer_add(&t->qbuf, status_hdr);
+  grpc_slice_buffer_add(&t->qbuf, message_pfx);
+  grpc_slice_buffer_add(&t->qbuf, grpc_slice_ref_internal(slice));
+  grpc_chttp2_add_rst_stream_to_next_write(t, s->id, GRPC_HTTP2_NO_ERROR,
+                                           &s->stats.outgoing);
+
+  grpc_chttp2_mark_stream_closed(t, s, 1, 1, error);
+  grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API);
+}
+
+typedef struct {
+  grpc_error* error;
+  grpc_chttp2_transport* t;
+} cancel_stream_cb_args;
+
+static void cancel_stream_cb(void* user_data, uint32_t /*key*/, void* stream) {
+  cancel_stream_cb_args* args = static_cast<cancel_stream_cb_args*>(user_data);
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(stream);
+  grpc_chttp2_cancel_stream(args->t, s, GRPC_ERROR_REF(args->error));
+}
+
+static void end_all_the_calls(grpc_chttp2_transport* t, grpc_error* error) {
+  intptr_t http2_error;
+  // If there is no explicit grpc or HTTP/2 error, set to UNAVAILABLE on server.
+  if (!t->is_client && !grpc_error_has_clear_grpc_status(error) &&
+      !grpc_error_get_int(error, GRPC_ERROR_INT_HTTP2_ERROR, &http2_error)) {
+    error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS,
+                               GRPC_STATUS_UNAVAILABLE);
+  }
+  cancel_stream_cb_args args = {error, t};
+  grpc_chttp2_stream_map_for_each(&t->stream_map, cancel_stream_cb, &args);
+  GRPC_ERROR_UNREF(error);
+}
+
+/*******************************************************************************
+ * INPUT PROCESSING - PARSING
+ */
+
+template <class F>
+static void WithUrgency(grpc_chttp2_transport* t,
+                        grpc_core::chttp2::FlowControlAction::Urgency urgency,
+                        grpc_chttp2_initiate_write_reason reason, F action) {
+  switch (urgency) {
+    case grpc_core::chttp2::FlowControlAction::Urgency::NO_ACTION_NEEDED:
+      break;
+    case grpc_core::chttp2::FlowControlAction::Urgency::UPDATE_IMMEDIATELY:
+      grpc_chttp2_initiate_write(t, reason);
+    // fallthrough
+    case grpc_core::chttp2::FlowControlAction::Urgency::QUEUE_UPDATE:
+      action();
+      break;
+  }
+}
+
+void grpc_chttp2_act_on_flowctl_action(
+    const grpc_core::chttp2::FlowControlAction& action,
+    grpc_chttp2_transport* t, grpc_chttp2_stream* s) {
+  WithUrgency(t, action.send_stream_update(),
+              GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL,
+              [t, s]() { grpc_chttp2_mark_stream_writable(t, s); });
+  WithUrgency(t, action.send_transport_update(),
+              GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL, []() {});
+  WithUrgency(t, action.send_initial_window_update(),
+              GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS, [t, &action]() {
+                queue_setting_update(t,
+                                     GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
+                                     action.initial_window_size());
+              });
+  WithUrgency(t, action.send_max_frame_size_update(),
+              GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS, [t, &action]() {
+                queue_setting_update(t, GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE,
+                                     action.max_frame_size());
+              });
+}
+
+static grpc_error* try_http_parsing(grpc_chttp2_transport* t) {
+  grpc_http_parser parser;
+  size_t i = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_http_response response;
+
+  grpc_http_parser_init(&parser, GRPC_HTTP_RESPONSE, &response);
+
+  grpc_error* parse_error = GRPC_ERROR_NONE;
+  for (; i < t->read_buffer.count && parse_error == GRPC_ERROR_NONE; i++) {
+    parse_error =
+        grpc_http_parser_parse(&parser, t->read_buffer.slices[i], nullptr);
+  }
+  if (parse_error == GRPC_ERROR_NONE &&
+      (parse_error = grpc_http_parser_eof(&parser)) == GRPC_ERROR_NONE) {
+    error = grpc_error_set_int(
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                               "Trying to connect an http1.x server"),
+                           GRPC_ERROR_INT_HTTP_STATUS, response.status),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+  }
+  GRPC_ERROR_UNREF(parse_error);
+
+  grpc_http_parser_destroy(&parser);
+  grpc_http_response_destroy(&response);
+  return error;
+}
+
+static void read_action(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(
+      GRPC_CLOSURE_INIT(&t->read_action_locked, read_action_locked, t, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+static void read_action_locked(void* tp, grpc_error* error) {
+  GPR_TIMER_SCOPE("reading_action_locked", 0);
+
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+
+  GRPC_ERROR_REF(error);
+
+  grpc_error* err = error;
+  if (err != GRPC_ERROR_NONE) {
+    err = grpc_error_set_int(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                                 "Endpoint read failed", &err, 1),
+                             GRPC_ERROR_INT_OCCURRED_DURING_WRITE,
+                             t->write_state);
+  }
+  GPR_SWAP(grpc_error*, err, error);
+  GRPC_ERROR_UNREF(err);
+  if (t->closed_with_error == GRPC_ERROR_NONE) {
+    GPR_TIMER_SCOPE("reading_action.parse", 0);
+    size_t i = 0;
+    grpc_error* errors[3] = {GRPC_ERROR_REF(error), GRPC_ERROR_NONE,
+                             GRPC_ERROR_NONE};
+    for (; i < t->read_buffer.count && errors[1] == GRPC_ERROR_NONE; i++) {
+      grpc_core::BdpEstimator* bdp_est = t->flow_control->bdp_estimator();
+      if (bdp_est) {
+        bdp_est->AddIncomingBytes(
+            static_cast<int64_t> GRPC_SLICE_LENGTH(t->read_buffer.slices[i]));
+      }
+      errors[1] = grpc_chttp2_perform_read(t, t->read_buffer.slices[i]);
+    }
+    if (errors[1] != GRPC_ERROR_NONE) {
+      errors[2] = try_http_parsing(t);
+      GRPC_ERROR_UNREF(error);
+      error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+          "Failed parsing HTTP/2", errors, GPR_ARRAY_SIZE(errors));
+    }
+    for (i = 0; i < GPR_ARRAY_SIZE(errors); i++) {
+      GRPC_ERROR_UNREF(errors[i]);
+    }
+
+    GPR_TIMER_SCOPE("post_parse_locked", 0);
+    if (t->initial_window_update != 0) {
+      if (t->initial_window_update > 0) {
+        grpc_chttp2_stream* s;
+        while (grpc_chttp2_list_pop_stalled_by_stream(t, &s)) {
+          grpc_chttp2_mark_stream_writable(t, s);
+          grpc_chttp2_initiate_write(
+              t, GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING);
+        }
+      }
+      t->initial_window_update = 0;
+    }
+  }
+
+  GPR_TIMER_SCOPE("post_reading_action_locked", 0);
+  bool keep_reading = false;
+  if (error == GRPC_ERROR_NONE && t->closed_with_error != GRPC_ERROR_NONE) {
+    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Transport closed", &t->closed_with_error, 1);
+  }
+  if (error != GRPC_ERROR_NONE) {
+    /* If a goaway frame was received, this might be the reason why the read
+     * failed. Add this info to the error */
+    if (t->goaway_error != GRPC_ERROR_NONE) {
+      error = grpc_error_add_child(error, GRPC_ERROR_REF(t->goaway_error));
+    }
+
+    close_transport_locked(t, GRPC_ERROR_REF(error));
+    t->endpoint_reading = 0;
+  } else if (t->closed_with_error == GRPC_ERROR_NONE) {
+    keep_reading = true;
+    /* Since we have read a byte, reset the keepalive timer */
+    if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING) {
+      grpc_timer_cancel(&t->keepalive_ping_timer);
+    }
+  }
+  grpc_slice_buffer_reset_and_unref_internal(&t->read_buffer);
+
+  if (keep_reading) {
+    if (t->num_pending_induced_frames >= DEFAULT_MAX_PENDING_INDUCED_FRAMES) {
+      t->reading_paused_on_pending_induced_frames = true;
+      GRPC_CHTTP2_IF_TRACING(
+          gpr_log(GPR_INFO,
+                  "transport %p : Pausing reading due to too "
+                  "many unwritten SETTINGS ACK and RST_STREAM frames",
+                  t));
+    } else {
+      continue_read_action_locked(t);
+    }
+  } else {
+    GRPC_CHTTP2_UNREF_TRANSPORT(t, "reading_action");
+  }
+
+  GRPC_ERROR_UNREF(error);
+}
+
+static void continue_read_action_locked(grpc_chttp2_transport* t) {
+  const bool urgent = t->goaway_error != GRPC_ERROR_NONE;
+  GRPC_CLOSURE_INIT(&t->read_action_locked, read_action, t,
+                    grpc_schedule_on_exec_ctx);
+  grpc_endpoint_read(t->ep, &t->read_buffer, &t->read_action_locked, urgent);
+  grpc_chttp2_act_on_flowctl_action(t->flow_control->MakeAction(), t, nullptr);
+}
+
+// t is reffed prior to calling the first time, and once the callback chain
+// that kicks off finishes, it's unreffed
+static void schedule_bdp_ping_locked(grpc_chttp2_transport* t) {
+  t->flow_control->bdp_estimator()->SchedulePing();
+  send_ping_locked(
+      t,
+      GRPC_CLOSURE_INIT(&t->start_bdp_ping_locked, start_bdp_ping, t,
+                        grpc_schedule_on_exec_ctx),
+      GRPC_CLOSURE_INIT(&t->finish_bdp_ping_locked, finish_bdp_ping, t,
+                        grpc_schedule_on_exec_ctx));
+}
+
+static void start_bdp_ping(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->start_bdp_ping_locked,
+                                     start_bdp_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void start_bdp_ping_locked(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "%s: Start BDP ping err=%s", t->peer_string,
+            grpc_error_string(error));
+  }
+  if (error != GRPC_ERROR_NONE || t->closed_with_error != GRPC_ERROR_NONE) {
+    return;
+  }
+  /* Reset the keepalive ping timer */
+  if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING) {
+    grpc_timer_cancel(&t->keepalive_ping_timer);
+  }
+  t->flow_control->bdp_estimator()->StartPing();
+  t->bdp_ping_started = true;
+}
+
+static void finish_bdp_ping(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->finish_bdp_ping_locked,
+                                     finish_bdp_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void finish_bdp_ping_locked(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "%s: Complete BDP ping err=%s", t->peer_string,
+            grpc_error_string(error));
+  }
+  if (error != GRPC_ERROR_NONE || t->closed_with_error != GRPC_ERROR_NONE) {
+    GRPC_CHTTP2_UNREF_TRANSPORT(t, "bdp_ping");
+    return;
+  }
+  if (!t->bdp_ping_started) {
+    /* start_bdp_ping_locked has not been run yet. Schedule
+     * finish_bdp_ping_locked to be run later. */
+    t->combiner->Run(GRPC_CLOSURE_INIT(&t->finish_bdp_ping_locked,
+                                       finish_bdp_ping_locked, t, nullptr),
+                     GRPC_ERROR_REF(error));
+    return;
+  }
+  t->bdp_ping_started = false;
+  grpc_millis next_ping = t->flow_control->bdp_estimator()->CompletePing();
+  grpc_chttp2_act_on_flowctl_action(t->flow_control->PeriodicUpdate(), t,
+                                    nullptr);
+  GPR_ASSERT(!t->have_next_bdp_ping_timer);
+  t->have_next_bdp_ping_timer = true;
+  GRPC_CLOSURE_INIT(&t->next_bdp_ping_timer_expired_locked,
+                    next_bdp_ping_timer_expired, t, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&t->next_bdp_ping_timer, next_ping,
+                  &t->next_bdp_ping_timer_expired_locked);
+}
+
+static void next_bdp_ping_timer_expired(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  t->combiner->Run(
+      GRPC_CLOSURE_INIT(&t->next_bdp_ping_timer_expired_locked,
+                        next_bdp_ping_timer_expired_locked, t, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+static void next_bdp_ping_timer_expired_locked(void* tp, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  GPR_ASSERT(t->have_next_bdp_ping_timer);
+  t->have_next_bdp_ping_timer = false;
+  if (error != GRPC_ERROR_NONE) {
+    GRPC_CHTTP2_UNREF_TRANSPORT(t, "bdp_ping");
+    return;
+  }
+  schedule_bdp_ping_locked(t);
+}
+
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args* args,
+                                               bool is_client) {
+  size_t i;
+  if (args) {
+    for (i = 0; i < args->num_args; i++) {
+      if (0 == strcmp(args->args[i].key, GRPC_ARG_KEEPALIVE_TIME_MS)) {
+        const int value = grpc_channel_arg_get_integer(
+            &args->args[i], {is_client ? g_default_client_keepalive_time_ms
+                                       : g_default_server_keepalive_time_ms,
+                             1, INT_MAX});
+        if (is_client) {
+          g_default_client_keepalive_time_ms = value;
+        } else {
+          g_default_server_keepalive_time_ms = value;
+        }
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_KEEPALIVE_TIMEOUT_MS)) {
+        const int value = grpc_channel_arg_get_integer(
+            &args->args[i], {is_client ? g_default_client_keepalive_timeout_ms
+                                       : g_default_server_keepalive_timeout_ms,
+                             0, INT_MAX});
+        if (is_client) {
+          g_default_client_keepalive_timeout_ms = value;
+        } else {
+          g_default_server_keepalive_timeout_ms = value;
+        }
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
+        const bool value = static_cast<uint32_t>(grpc_channel_arg_get_integer(
+            &args->args[i],
+            {is_client ? g_default_client_keepalive_permit_without_calls
+                       : g_default_server_keepalive_timeout_ms,
+             0, 1}));
+        if (is_client) {
+          g_default_client_keepalive_permit_without_calls = value;
+        } else {
+          g_default_server_keepalive_permit_without_calls = value;
+        }
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_HTTP2_MAX_PING_STRIKES)) {
+        g_default_max_ping_strikes = grpc_channel_arg_get_integer(
+            &args->args[i], {g_default_max_ping_strikes, 0, INT_MAX});
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA)) {
+        g_default_max_pings_without_data = grpc_channel_arg_get_integer(
+            &args->args[i], {g_default_max_pings_without_data, 0, INT_MAX});
+      } else if (0 ==
+                 strcmp(
+                     args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        g_default_min_sent_ping_interval_without_data_ms =
+            grpc_channel_arg_get_integer(
+                &args->args[i],
+                {g_default_min_sent_ping_interval_without_data_ms, 0, INT_MAX});
+      } else if (0 ==
+                 strcmp(
+                     args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        g_default_min_recv_ping_interval_without_data_ms =
+            grpc_channel_arg_get_integer(
+                &args->args[i],
+                {g_default_min_recv_ping_interval_without_data_ms, 0, INT_MAX});
+      }
+    }
+  }
+}
+
+static void init_keepalive_ping(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->init_keepalive_ping_locked,
+                                     init_keepalive_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void init_keepalive_ping_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  GPR_ASSERT(t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING);
+  if (t->destroying || t->closed_with_error != GRPC_ERROR_NONE) {
+    t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DYING;
+  } else if (error == GRPC_ERROR_NONE) {
+    if (t->keepalive_permit_without_calls ||
+        grpc_chttp2_stream_map_size(&t->stream_map) > 0) {
+      t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_PINGING;
+      GRPC_CHTTP2_REF_TRANSPORT(t, "keepalive ping end");
+      grpc_timer_init_unset(&t->keepalive_watchdog_timer);
+      send_keepalive_ping_locked(t);
+      grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING);
+    } else {
+      GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
+      GRPC_CLOSURE_INIT(&t->init_keepalive_ping_locked, init_keepalive_ping, t,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&t->keepalive_ping_timer,
+                      grpc_core::ExecCtx::Get()->Now() + t->keepalive_time,
+                      &t->init_keepalive_ping_locked);
+    }
+  } else if (error == GRPC_ERROR_CANCELLED) {
+    /* The keepalive ping timer may be cancelled by bdp */
+    GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
+    GRPC_CLOSURE_INIT(&t->init_keepalive_ping_locked, init_keepalive_ping, t,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&t->keepalive_ping_timer,
+                    grpc_core::ExecCtx::Get()->Now() + t->keepalive_time,
+                    &t->init_keepalive_ping_locked);
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "init keepalive ping");
+}
+
+static void start_keepalive_ping(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->start_keepalive_ping_locked,
+                                     start_keepalive_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void start_keepalive_ping_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    return;
+  }
+  if (t->channelz_socket != nullptr) {
+    t->channelz_socket->RecordKeepaliveSent();
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "%s: Start keepalive ping", t->peer_string);
+  }
+  GRPC_CHTTP2_REF_TRANSPORT(t, "keepalive watchdog");
+  GRPC_CLOSURE_INIT(&t->keepalive_watchdog_fired_locked,
+                    keepalive_watchdog_fired, t, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&t->keepalive_watchdog_timer,
+                  grpc_core::ExecCtx::Get()->Now() + t->keepalive_timeout,
+                  &t->keepalive_watchdog_fired_locked);
+  t->keepalive_ping_started = true;
+}
+
+static void finish_keepalive_ping(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->finish_keepalive_ping_locked,
+                                     finish_keepalive_ping_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void finish_keepalive_ping_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_PINGING) {
+    if (error == GRPC_ERROR_NONE) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+        gpr_log(GPR_INFO, "%s: Finish keepalive ping", t->peer_string);
+      }
+      if (!t->keepalive_ping_started) {
+        /* start_keepalive_ping_locked has not run yet. Reschedule
+         * finish_keepalive_ping_locked for it to be run later. */
+        t->combiner->Run(
+            GRPC_CLOSURE_INIT(&t->finish_keepalive_ping_locked,
+                              finish_keepalive_ping_locked, t, nullptr),
+            GRPC_ERROR_REF(error));
+        return;
+      }
+      t->keepalive_ping_started = false;
+      t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_WAITING;
+      grpc_timer_cancel(&t->keepalive_watchdog_timer);
+      GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
+      GRPC_CLOSURE_INIT(&t->init_keepalive_ping_locked, init_keepalive_ping, t,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&t->keepalive_ping_timer,
+                      grpc_core::ExecCtx::Get()->Now() + t->keepalive_time,
+                      &t->init_keepalive_ping_locked);
+    }
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "keepalive ping end");
+}
+
+static void keepalive_watchdog_fired(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(
+      GRPC_CLOSURE_INIT(&t->keepalive_watchdog_fired_locked,
+                        keepalive_watchdog_fired_locked, t, nullptr),
+      GRPC_ERROR_REF(error));
+}
+
+static void keepalive_watchdog_fired_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_PINGING) {
+    if (error == GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "%s: Keepalive watchdog fired. Closing transport.",
+              t->peer_string);
+      t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DYING;
+      close_transport_locked(
+          t, grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                    "keepalive watchdog timeout"),
+                                GRPC_ERROR_INT_GRPC_STATUS,
+                                GRPC_STATUS_UNAVAILABLE));
+    }
+  } else {
+    /* The watchdog timer should have been cancelled by
+     * finish_keepalive_ping_locked. */
+    if (GPR_UNLIKELY(error != GRPC_ERROR_CANCELLED)) {
+      gpr_log(GPR_ERROR, "keepalive_ping_end state error: %d (expect: %d)",
+              t->keepalive_state, GRPC_CHTTP2_KEEPALIVE_STATE_PINGING);
+    }
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "keepalive watchdog");
+}
+
+/*******************************************************************************
+ * CALLBACK LOOP
+ */
+
+static void connectivity_state_set(grpc_chttp2_transport* t,
+                                   grpc_connectivity_state state,
+                                   const char* reason) {
+  GRPC_CHTTP2_IF_TRACING(
+      gpr_log(GPR_INFO, "transport %p set connectivity_state=%d", t, state));
+  t->state_tracker.SetState(state, reason);
+}
+
+/*******************************************************************************
+ * POLLSET STUFF
+ */
+
+static void set_pollset(grpc_transport* gt, grpc_stream* /*gs*/,
+                        grpc_pollset* pollset) {
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  grpc_endpoint_add_to_pollset(t->ep, pollset);
+}
+
+static void set_pollset_set(grpc_transport* gt, grpc_stream* /*gs*/,
+                            grpc_pollset_set* pollset_set) {
+  grpc_chttp2_transport* t = reinterpret_cast<grpc_chttp2_transport*>(gt);
+  grpc_endpoint_add_to_pollset_set(t->ep, pollset_set);
+}
+
+/*******************************************************************************
+ * BYTE STREAM
+ */
+
+static void reset_byte_stream(void* arg, grpc_error* error) {
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(arg);
+  s->pending_byte_stream = false;
+  if (error == GRPC_ERROR_NONE) {
+    grpc_chttp2_maybe_complete_recv_message(s->t, s);
+    grpc_chttp2_maybe_complete_recv_trailing_metadata(s->t, s);
+  } else {
+    GPR_ASSERT(error != GRPC_ERROR_NONE);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->on_next, GRPC_ERROR_REF(error));
+    s->on_next = nullptr;
+    GRPC_ERROR_UNREF(s->byte_stream_error);
+    s->byte_stream_error = GRPC_ERROR_NONE;
+    grpc_chttp2_cancel_stream(s->t, s, GRPC_ERROR_REF(error));
+    s->byte_stream_error = GRPC_ERROR_REF(error);
+  }
+}
+
+namespace grpc_core {
+
+Chttp2IncomingByteStream::Chttp2IncomingByteStream(
+    grpc_chttp2_transport* transport, grpc_chttp2_stream* stream,
+    uint32_t frame_size, uint32_t flags)
+    : ByteStream(frame_size, flags),
+      transport_(transport),
+      stream_(stream),
+      refs_(2),
+      remaining_bytes_(frame_size) {
+  GRPC_ERROR_UNREF(stream->byte_stream_error);
+  stream->byte_stream_error = GRPC_ERROR_NONE;
+}
+
+void Chttp2IncomingByteStream::OrphanLocked(void* arg,
+                                            grpc_error* /*error_ignored*/) {
+  Chttp2IncomingByteStream* bs = static_cast<Chttp2IncomingByteStream*>(arg);
+  grpc_chttp2_stream* s = bs->stream_;
+  grpc_chttp2_transport* t = s->t;
+  bs->Unref();
+  s->pending_byte_stream = false;
+  grpc_chttp2_maybe_complete_recv_message(t, s);
+  grpc_chttp2_maybe_complete_recv_trailing_metadata(t, s);
+}
+
+void Chttp2IncomingByteStream::Orphan() {
+  GPR_TIMER_SCOPE("incoming_byte_stream_destroy", 0);
+  transport_->combiner->Run(
+      GRPC_CLOSURE_INIT(&destroy_action_,
+                        &Chttp2IncomingByteStream::OrphanLocked, this, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+void Chttp2IncomingByteStream::NextLocked(void* arg,
+                                          grpc_error* /*error_ignored*/) {
+  Chttp2IncomingByteStream* bs = static_cast<Chttp2IncomingByteStream*>(arg);
+  grpc_chttp2_transport* t = bs->transport_;
+  grpc_chttp2_stream* s = bs->stream_;
+  size_t cur_length = s->frame_storage.length;
+  if (!s->read_closed) {
+    s->flow_control->IncomingByteStreamUpdate(bs->next_action_.max_size_hint,
+                                              cur_length);
+    grpc_chttp2_act_on_flowctl_action(s->flow_control->MakeAction(), t, s);
+  }
+  GPR_ASSERT(s->unprocessed_incoming_frames_buffer.length == 0);
+  if (s->frame_storage.length > 0) {
+    grpc_slice_buffer_swap(&s->frame_storage,
+                           &s->unprocessed_incoming_frames_buffer);
+    s->unprocessed_incoming_frames_decompressed = false;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, bs->next_action_.on_complete,
+                            GRPC_ERROR_NONE);
+  } else if (s->byte_stream_error != GRPC_ERROR_NONE) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, bs->next_action_.on_complete,
+                            GRPC_ERROR_REF(s->byte_stream_error));
+    if (s->data_parser.parsing_frame != nullptr) {
+      s->data_parser.parsing_frame->Unref();
+      s->data_parser.parsing_frame = nullptr;
+    }
+  } else if (s->read_closed) {
+    if (bs->remaining_bytes_ != 0) {
+      s->byte_stream_error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+          "Truncated message", &s->read_closed_error, 1);
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, bs->next_action_.on_complete,
+                              GRPC_ERROR_REF(s->byte_stream_error));
+      if (s->data_parser.parsing_frame != nullptr) {
+        s->data_parser.parsing_frame->Unref();
+        s->data_parser.parsing_frame = nullptr;
+      }
+    } else {
+      /* Should never reach here. */
+      GPR_ASSERT(false);
+    }
+  } else {
+    s->on_next = bs->next_action_.on_complete;
+  }
+  bs->Unref();
+}
+
+bool Chttp2IncomingByteStream::Next(size_t max_size_hint,
+                                    grpc_closure* on_complete) {
+  GPR_TIMER_SCOPE("incoming_byte_stream_next", 0);
+  if (stream_->unprocessed_incoming_frames_buffer.length > 0) {
+    return true;
+  } else {
+    Ref();
+    next_action_.max_size_hint = max_size_hint;
+    next_action_.on_complete = on_complete;
+    transport_->combiner->Run(
+        GRPC_CLOSURE_INIT(&next_action_.closure,
+                          &Chttp2IncomingByteStream::NextLocked, this, nullptr),
+        GRPC_ERROR_NONE);
+    return false;
+  }
+}
+
+void Chttp2IncomingByteStream::MaybeCreateStreamDecompressionCtx() {
+  GPR_DEBUG_ASSERT(stream_->stream_decompression_method !=
+                   GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS);
+  if (!stream_->stream_decompression_ctx) {
+    stream_->stream_decompression_ctx = grpc_stream_compression_context_create(
+        stream_->stream_decompression_method);
+  }
+}
+
+grpc_error* Chttp2IncomingByteStream::Pull(grpc_slice* slice) {
+  GPR_TIMER_SCOPE("incoming_byte_stream_pull", 0);
+  grpc_error* error;
+  if (stream_->unprocessed_incoming_frames_buffer.length > 0) {
+    if (!stream_->unprocessed_incoming_frames_decompressed &&
+        stream_->stream_decompression_method !=
+            GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS) {
+      bool end_of_context;
+      MaybeCreateStreamDecompressionCtx();
+      if (!grpc_stream_decompress(stream_->stream_decompression_ctx,
+                                  &stream_->unprocessed_incoming_frames_buffer,
+                                  &stream_->decompressed_data_buffer, nullptr,
+                                  MAX_SIZE_T, &end_of_context)) {
+        error =
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Stream decompression error.");
+        return error;
+      }
+      GPR_ASSERT(stream_->unprocessed_incoming_frames_buffer.length == 0);
+      grpc_slice_buffer_swap(&stream_->unprocessed_incoming_frames_buffer,
+                             &stream_->decompressed_data_buffer);
+      stream_->unprocessed_incoming_frames_decompressed = true;
+      if (end_of_context) {
+        grpc_stream_compression_context_destroy(
+            stream_->stream_decompression_ctx);
+        stream_->stream_decompression_ctx = nullptr;
+      }
+      if (stream_->unprocessed_incoming_frames_buffer.length == 0) {
+        *slice = grpc_empty_slice();
+      }
+    }
+    error = grpc_deframe_unprocessed_incoming_frames(
+        &stream_->data_parser, stream_,
+        &stream_->unprocessed_incoming_frames_buffer, slice, nullptr);
+    if (error != GRPC_ERROR_NONE) {
+      return error;
+    }
+  } else {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Truncated message");
+    stream_->t->combiner->Run(&stream_->reset_byte_stream,
+                              GRPC_ERROR_REF(error));
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void Chttp2IncomingByteStream::PublishError(grpc_error* error) {
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, stream_->on_next,
+                          GRPC_ERROR_REF(error));
+  stream_->on_next = nullptr;
+  GRPC_ERROR_UNREF(stream_->byte_stream_error);
+  stream_->byte_stream_error = GRPC_ERROR_REF(error);
+  grpc_chttp2_cancel_stream(transport_, stream_, GRPC_ERROR_REF(error));
+}
+
+grpc_error* Chttp2IncomingByteStream::Push(const grpc_slice& slice,
+                                           grpc_slice* slice_out) {
+  if (remaining_bytes_ < GRPC_SLICE_LENGTH(slice)) {
+    grpc_error* error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Too many bytes in stream");
+    transport_->combiner->Run(&stream_->reset_byte_stream,
+                              GRPC_ERROR_REF(error));
+    grpc_slice_unref_internal(slice);
+    return error;
+  } else {
+    remaining_bytes_ -= static_cast<uint32_t> GRPC_SLICE_LENGTH(slice);
+    if (slice_out != nullptr) {
+      *slice_out = slice;
+    }
+    return GRPC_ERROR_NONE;
+  }
+}
+
+grpc_error* Chttp2IncomingByteStream::Finished(grpc_error* error,
+                                               bool reset_on_error) {
+  if (error == GRPC_ERROR_NONE) {
+    if (remaining_bytes_ != 0) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Truncated message");
+    }
+  }
+  if (error != GRPC_ERROR_NONE && reset_on_error) {
+    transport_->combiner->Run(&stream_->reset_byte_stream,
+                              GRPC_ERROR_REF(error));
+  }
+  Unref();
+  return error;
+}
+
+void Chttp2IncomingByteStream::Shutdown(grpc_error* error) {
+  GRPC_ERROR_UNREF(Finished(error, true /* reset_on_error */));
+}
+
+}  // namespace grpc_core
+
+/*******************************************************************************
+ * RESOURCE QUOTAS
+ */
+
+static void post_benign_reclaimer(grpc_chttp2_transport* t) {
+  if (!t->benign_reclaimer_registered) {
+    t->benign_reclaimer_registered = true;
+    GRPC_CHTTP2_REF_TRANSPORT(t, "benign_reclaimer");
+    GRPC_CLOSURE_INIT(&t->benign_reclaimer_locked, benign_reclaimer, t,
+                      grpc_schedule_on_exec_ctx);
+    grpc_resource_user_post_reclaimer(grpc_endpoint_get_resource_user(t->ep),
+                                      false, &t->benign_reclaimer_locked);
+  }
+}
+
+static void post_destructive_reclaimer(grpc_chttp2_transport* t) {
+  if (!t->destructive_reclaimer_registered) {
+    t->destructive_reclaimer_registered = true;
+    GRPC_CHTTP2_REF_TRANSPORT(t, "destructive_reclaimer");
+    GRPC_CLOSURE_INIT(&t->destructive_reclaimer_locked, destructive_reclaimer,
+                      t, grpc_schedule_on_exec_ctx);
+    grpc_resource_user_post_reclaimer(grpc_endpoint_get_resource_user(t->ep),
+                                      true, &t->destructive_reclaimer_locked);
+  }
+}
+
+static void benign_reclaimer(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->benign_reclaimer_locked,
+                                     benign_reclaimer_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void benign_reclaimer_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  if (error == GRPC_ERROR_NONE &&
+      grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+    /* Channel with no active streams: send a goaway to try and make it
+     * disconnect cleanly */
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+      gpr_log(GPR_INFO, "HTTP2: %s - send goaway to free memory",
+              t->peer_string);
+    }
+    send_goaway(t,
+                grpc_error_set_int(
+                    GRPC_ERROR_CREATE_FROM_STATIC_STRING("Buffers full"),
+                    GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_ENHANCE_YOUR_CALM));
+  } else if (error == GRPC_ERROR_NONE &&
+             GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO,
+            "HTTP2: %s - skip benign reclamation, there are still %" PRIdPTR
+            " streams",
+            t->peer_string, grpc_chttp2_stream_map_size(&t->stream_map));
+  }
+  t->benign_reclaimer_registered = false;
+  if (error != GRPC_ERROR_CANCELLED) {
+    grpc_resource_user_finish_reclamation(
+        grpc_endpoint_get_resource_user(t->ep));
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "benign_reclaimer");
+}
+
+static void destructive_reclaimer(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  t->combiner->Run(GRPC_CLOSURE_INIT(&t->destructive_reclaimer_locked,
+                                     destructive_reclaimer_locked, t, nullptr),
+                   GRPC_ERROR_REF(error));
+}
+
+static void destructive_reclaimer_locked(void* arg, grpc_error* error) {
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(arg);
+  size_t n = grpc_chttp2_stream_map_size(&t->stream_map);
+  t->destructive_reclaimer_registered = false;
+  if (error == GRPC_ERROR_NONE && n > 0) {
+    grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(
+        grpc_chttp2_stream_map_rand(&t->stream_map));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+      gpr_log(GPR_INFO, "HTTP2: %s - abandon stream id %d", t->peer_string,
+              s->id);
+    }
+    grpc_chttp2_cancel_stream(
+        t, s,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Buffers full"),
+                           GRPC_ERROR_INT_HTTP2_ERROR,
+                           GRPC_HTTP2_ENHANCE_YOUR_CALM));
+    if (n > 1) {
+      /* Since we cancel one stream per destructive reclamation, if
+         there are more streams left, we can immediately post a new
+         reclaimer in case the resource quota needs to free more
+         memory */
+      post_destructive_reclaimer(t);
+    }
+  }
+  if (error != GRPC_ERROR_CANCELLED) {
+    grpc_resource_user_finish_reclamation(
+        grpc_endpoint_get_resource_user(t->ep));
+  }
+  GRPC_CHTTP2_UNREF_TRANSPORT(t, "destructive_reclaimer");
+}
+
+/*******************************************************************************
+ * MONITORING
+ */
+
+const char* grpc_chttp2_initiate_write_reason_string(
+    grpc_chttp2_initiate_write_reason reason) {
+  switch (reason) {
+    case GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE:
+      return "INITIAL_WRITE";
+    case GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM:
+      return "START_NEW_STREAM";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE:
+      return "SEND_MESSAGE";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA:
+      return "SEND_INITIAL_METADATA";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA:
+      return "SEND_TRAILING_METADATA";
+    case GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING:
+      return "RETRY_SEND_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS:
+      return "CONTINUE_PINGS";
+    case GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT:
+      return "GOAWAY_SENT";
+    case GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM:
+      return "RST_STREAM";
+    case GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API:
+      return "CLOSE_FROM_API";
+    case GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL:
+      return "STREAM_FLOW_CONTROL";
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL:
+      return "TRANSPORT_FLOW_CONTROL";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS:
+      return "SEND_SETTINGS";
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING:
+      return "FLOW_CONTROL_UNSTALLED_BY_SETTING";
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE:
+      return "FLOW_CONTROL_UNSTALLED_BY_UPDATE";
+    case GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING:
+      return "APPLICATION_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING:
+      return "KEEPALIVE_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED:
+      return "TRANSPORT_FLOW_CONTROL_UNSTALLED";
+    case GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE:
+      return "PING_RESPONSE";
+    case GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM:
+      return "FORCE_RST_STREAM";
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+static grpc_endpoint* chttp2_get_endpoint(grpc_transport* t) {
+  return (reinterpret_cast<grpc_chttp2_transport*>(t))->ep;
+}
+
+static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
+                                             "chttp2",
+                                             init_stream,
+                                             set_pollset,
+                                             set_pollset_set,
+                                             perform_stream_op,
+                                             perform_transport_op,
+                                             destroy_stream,
+                                             destroy_transport,
+                                             chttp2_get_endpoint};
+
+static const grpc_transport_vtable* get_vtable(void) { return &vtable; }
+
+grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>
+grpc_chttp2_transport_get_socket_node(grpc_transport* transport) {
+  grpc_chttp2_transport* t =
+      reinterpret_cast<grpc_chttp2_transport*>(transport);
+  return t->channelz_socket;
+}
+
+grpc_transport* grpc_create_chttp2_transport(
+    const grpc_channel_args* channel_args, grpc_endpoint* ep, bool is_client,
+    grpc_resource_user* resource_user) {
+  auto t =
+      new grpc_chttp2_transport(channel_args, ep, is_client, resource_user);
+  return &t->base;
+}
+
+void grpc_chttp2_transport_start_reading(
+    grpc_transport* transport, grpc_slice_buffer* read_buffer,
+    grpc_closure* notify_on_receive_settings) {
+  grpc_chttp2_transport* t =
+      reinterpret_cast<grpc_chttp2_transport*>(transport);
+  GRPC_CHTTP2_REF_TRANSPORT(
+      t, "reading_action"); /* matches unref inside reading_action */
+  if (read_buffer != nullptr) {
+    grpc_slice_buffer_move_into(read_buffer, &t->read_buffer);
+    gpr_free(read_buffer);
+  }
+  t->notify_on_receive_settings = notify_on_receive_settings;
+  t->combiner->Run(
+      GRPC_CLOSURE_INIT(&t->read_action_locked, read_action_locked, t, nullptr),
+      GRPC_ERROR_NONE);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.h
new file mode 100644
index 0000000..39574f9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/chttp2_transport.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/transport/transport.h"
+
+extern grpc_core::TraceFlag grpc_http_trace;
+extern grpc_core::TraceFlag grpc_trace_http2_stream_state;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_refcount;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_hpack_parser;
+
+extern bool g_flow_control_enabled;
+
+grpc_transport* grpc_create_chttp2_transport(
+    const grpc_channel_args* channel_args, grpc_endpoint* ep, bool is_client,
+    grpc_resource_user* resource_user = nullptr);
+
+grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>
+grpc_chttp2_transport_get_socket_node(grpc_transport* transport);
+
+/// Takes ownership of \a read_buffer, which (if non-NULL) contains
+/// leftover bytes previously read from the endpoint (e.g., by handshakers).
+/// If non-null, \a notify_on_receive_settings will be scheduled when
+/// HTTP/2 settings are received from the peer.
+void grpc_chttp2_transport_start_reading(
+    grpc_transport* transport, grpc_slice_buffer* read_buffer,
+    grpc_closure* notify_on_receive_settings);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.cc
new file mode 100644
index 0000000..a0473ea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.cc	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/context_list.h"
+
+namespace {
+void (*write_timestamps_callback_g)(void*, grpc_core::Timestamps*,
+                                    grpc_error* error) = nullptr;
+void* (*get_copied_context_fn_g)(void*) = nullptr;
+}  // namespace
+
+namespace grpc_core {
+void ContextList::Append(ContextList** head, grpc_chttp2_stream* s) {
+  if (get_copied_context_fn_g == nullptr ||
+      write_timestamps_callback_g == nullptr) {
+    return;
+  }
+  /* Create a new element in the list and add it at the front */
+  ContextList* elem = new ContextList();
+  elem->trace_context_ = get_copied_context_fn_g(s->context);
+  elem->byte_offset_ = s->byte_counter;
+  elem->next_ = *head;
+  *head = elem;
+}
+
+void ContextList::Execute(void* arg, grpc_core::Timestamps* ts,
+                          grpc_error* error) {
+  ContextList* head = static_cast<ContextList*>(arg);
+  ContextList* to_be_freed;
+  while (head != nullptr) {
+    if (write_timestamps_callback_g) {
+      if (ts) {
+        ts->byte_offset = static_cast<uint32_t>(head->byte_offset_);
+      }
+      write_timestamps_callback_g(head->trace_context_, ts, error);
+    }
+    to_be_freed = head;
+    head = head->next_;
+    delete to_be_freed;
+  }
+}
+
+void grpc_http2_set_write_timestamps_callback(void (*fn)(void*,
+                                                         grpc_core::Timestamps*,
+                                                         grpc_error* error)) {
+  write_timestamps_callback_g = fn;
+}
+
+void grpc_http2_set_fn_get_copied_context(void* (*fn)(void*)) {
+  get_copied_context_fn_g = fn;
+}
+} /* namespace grpc_core */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.h
new file mode 100644
index 0000000..5b9d2ab
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/context_list.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/buffer_list.h"
+
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+namespace grpc_core {
+/** A list of RPC Contexts */
+class ContextList {
+ public:
+  /* Creates a new element with \a context as the value and appends it to the
+   * list. */
+  static void Append(ContextList** head, grpc_chttp2_stream* s);
+
+  /* Executes a function \a fn with each context in the list and \a ts. It also
+   * frees up the entire list after this operation. It is intended as a callback
+   * and hence does not take a ref on \a error */
+  static void Execute(void* arg, grpc_core::Timestamps* ts, grpc_error* error);
+
+ private:
+  void* trace_context_ = nullptr;
+  ContextList* next_ = nullptr;
+  size_t byte_offset_ = 0;
+};
+
+void grpc_http2_set_write_timestamps_callback(void (*fn)(void*,
+                                                         grpc_core::Timestamps*,
+                                                         grpc_error* error));
+void grpc_http2_set_fn_get_copied_context(void* (*fn)(void*));
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CONTEXT_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.cc
new file mode 100644
index 0000000..d53475a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.cc	
@@ -0,0 +1,408 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/flow_control.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <math.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/gpr/string.h"
+
+grpc_core::TraceFlag grpc_flowctl_trace(false, "flowctl");
+
+namespace grpc_core {
+namespace chttp2 {
+
+namespace {
+
+static constexpr const int kTracePadding = 30;
+static constexpr const uint32_t kMaxWindowUpdateSize = (1u << 31) - 1;
+
+static char* fmt_int64_diff_str(int64_t old_val, int64_t new_val) {
+  char* str;
+  if (old_val != new_val) {
+    gpr_asprintf(&str, "%" PRId64 " -> %" PRId64 "", old_val, new_val);
+  } else {
+    gpr_asprintf(&str, "%" PRId64 "", old_val);
+  }
+  char* str_lp = gpr_leftpad(str, ' ', kTracePadding);
+  gpr_free(str);
+  return str_lp;
+}
+
+static char* fmt_uint32_diff_str(uint32_t old_val, uint32_t new_val) {
+  char* str;
+  if (old_val != new_val) {
+    gpr_asprintf(&str, "%" PRIu32 " -> %" PRIu32 "", old_val, new_val);
+  } else {
+    gpr_asprintf(&str, "%" PRIu32 "", old_val);
+  }
+  char* str_lp = gpr_leftpad(str, ' ', kTracePadding);
+  gpr_free(str);
+  return str_lp;
+}
+}  // namespace
+
+void FlowControlTrace::Init(const char* reason, TransportFlowControl* tfc,
+                            StreamFlowControl* sfc) {
+  tfc_ = tfc;
+  sfc_ = sfc;
+  reason_ = reason;
+  remote_window_ = tfc->remote_window();
+  target_window_ = tfc->target_window();
+  announced_window_ = tfc->announced_window();
+  if (sfc != nullptr) {
+    remote_window_delta_ = sfc->remote_window_delta();
+    local_window_delta_ = sfc->local_window_delta();
+    announced_window_delta_ = sfc->announced_window_delta();
+  }
+}
+
+void FlowControlTrace::Finish() {
+  uint32_t acked_local_window =
+      tfc_->transport()->settings[GRPC_SENT_SETTINGS]
+                                 [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+  uint32_t remote_window =
+      tfc_->transport()->settings[GRPC_PEER_SETTINGS]
+                                 [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+  char* trw_str = fmt_int64_diff_str(remote_window_, tfc_->remote_window());
+  char* tlw_str = fmt_int64_diff_str(target_window_, tfc_->target_window());
+  char* taw_str =
+      fmt_int64_diff_str(announced_window_, tfc_->announced_window());
+  char* srw_str;
+  char* slw_str;
+  char* saw_str;
+  if (sfc_ != nullptr) {
+    srw_str = fmt_int64_diff_str(remote_window_delta_ + remote_window,
+                                 sfc_->remote_window_delta() + remote_window);
+    slw_str =
+        fmt_int64_diff_str(local_window_delta_ + acked_local_window,
+                           sfc_->local_window_delta() + acked_local_window);
+    saw_str =
+        fmt_int64_diff_str(announced_window_delta_ + acked_local_window,
+                           sfc_->announced_window_delta() + acked_local_window);
+  } else {
+    srw_str = gpr_leftpad("", ' ', kTracePadding);
+    slw_str = gpr_leftpad("", ' ', kTracePadding);
+    saw_str = gpr_leftpad("", ' ', kTracePadding);
+  }
+  gpr_log(GPR_DEBUG,
+          "%p[%u][%s] | %s | trw:%s, tlw:%s, taw:%s, srw:%s, slw:%s, saw:%s",
+          tfc_, sfc_ != nullptr ? sfc_->stream()->id : 0,
+          tfc_->transport()->is_client ? "cli" : "svr", reason_, trw_str,
+          tlw_str, taw_str, srw_str, slw_str, saw_str);
+  gpr_free(trw_str);
+  gpr_free(tlw_str);
+  gpr_free(taw_str);
+  gpr_free(srw_str);
+  gpr_free(slw_str);
+  gpr_free(saw_str);
+}
+
+const char* FlowControlAction::UrgencyString(Urgency u) {
+  switch (u) {
+    case Urgency::NO_ACTION_NEEDED:
+      return "no action";
+    case Urgency::UPDATE_IMMEDIATELY:
+      return "update immediately";
+    case Urgency::QUEUE_UPDATE:
+      return "queue update";
+    default:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+void FlowControlAction::Trace(grpc_chttp2_transport* t) const {
+  char* iw_str = fmt_uint32_diff_str(
+      t->settings[GRPC_SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE],
+      initial_window_size_);
+  char* mf_str = fmt_uint32_diff_str(
+      t->settings[GRPC_SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
+      max_frame_size_);
+  gpr_log(GPR_DEBUG, "t[%s],  s[%s], iw:%s:%s mf:%s:%s",
+          UrgencyString(send_transport_update_),
+          UrgencyString(send_stream_update_),
+          UrgencyString(send_initial_window_update_), iw_str,
+          UrgencyString(send_max_frame_size_update_), mf_str);
+  gpr_free(iw_str);
+  gpr_free(mf_str);
+}
+
+TransportFlowControlDisabled::TransportFlowControlDisabled(
+    grpc_chttp2_transport* t) {
+  remote_window_ = kMaxWindow;
+  target_initial_window_size_ = kMaxWindow;
+  announced_window_ = kMaxWindow;
+  t->settings[GRPC_PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE] =
+      kFrameSize;
+  t->settings[GRPC_SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE] =
+      kFrameSize;
+  t->settings[GRPC_ACKED_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE] =
+      kFrameSize;
+  t->settings[GRPC_PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] =
+      kMaxWindow;
+  t->settings[GRPC_SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] =
+      kMaxWindow;
+  t->settings[GRPC_ACKED_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] =
+      kMaxWindow;
+}
+
+TransportFlowControl::TransportFlowControl(const grpc_chttp2_transport* t,
+                                           bool enable_bdp_probe)
+    : t_(t),
+      enable_bdp_probe_(enable_bdp_probe),
+      bdp_estimator_(t->peer_string),
+      pid_controller_(grpc_core::PidController::Args()
+                          .set_gain_p(4)
+                          .set_gain_i(8)
+                          .set_gain_d(0)
+                          .set_initial_control_value(TargetLogBdp())
+                          .set_min_control_value(-1)
+                          .set_max_control_value(25)
+                          .set_integral_range(10)),
+      last_pid_update_(grpc_core::ExecCtx::Get()->Now()) {}
+
+uint32_t TransportFlowControl::MaybeSendUpdate(bool writing_anyway) {
+  FlowControlTrace trace("t updt sent", this, nullptr);
+  const uint32_t target_announced_window =
+      static_cast<uint32_t>(target_window());
+  if ((writing_anyway || announced_window_ <= target_announced_window / 2) &&
+      announced_window_ != target_announced_window) {
+    const uint32_t announce = static_cast<uint32_t> GPR_CLAMP(
+        target_announced_window - announced_window_, 0, kMaxWindowUpdateSize);
+    announced_window_ += announce;
+    return announce;
+  }
+  return 0;
+}
+
+grpc_error* TransportFlowControl::ValidateRecvData(
+    int64_t incoming_frame_size) {
+  if (incoming_frame_size > announced_window_) {
+    char* msg;
+    gpr_asprintf(&msg,
+                 "frame of size %" PRId64 " overflows local window of %" PRId64,
+                 incoming_frame_size, announced_window_);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+StreamFlowControl::StreamFlowControl(TransportFlowControl* tfc,
+                                     const grpc_chttp2_stream* s)
+    : tfc_(tfc), s_(s) {}
+
+grpc_error* StreamFlowControl::RecvData(int64_t incoming_frame_size) {
+  FlowControlTrace trace("  data recv", tfc_, this);
+
+  grpc_error* error = GRPC_ERROR_NONE;
+  error = tfc_->ValidateRecvData(incoming_frame_size);
+  if (error != GRPC_ERROR_NONE) return error;
+
+  uint32_t sent_init_window =
+      tfc_->transport()->settings[GRPC_SENT_SETTINGS]
+                                 [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+  uint32_t acked_init_window =
+      tfc_->transport()->settings[GRPC_ACKED_SETTINGS]
+                                 [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+
+  int64_t acked_stream_window = announced_window_delta_ + acked_init_window;
+  int64_t sent_stream_window = announced_window_delta_ + sent_init_window;
+  if (incoming_frame_size > acked_stream_window) {
+    if (incoming_frame_size <= sent_stream_window) {
+      gpr_log(GPR_ERROR,
+              "Incoming frame of size %" PRId64
+              " exceeds local window size of %" PRId64
+              ".\n"
+              "The (un-acked, future) window size would be %" PRId64
+              " which is not exceeded.\n"
+              "This would usually cause a disconnection, but allowing it due to"
+              "broken HTTP2 implementations in the wild.\n"
+              "See (for example) https://github.com/netty/netty/issues/6520.",
+              incoming_frame_size, acked_stream_window, sent_stream_window);
+    } else {
+      char* msg;
+      gpr_asprintf(
+          &msg, "frame of size %" PRId64 " overflows local window of %" PRId64,
+          incoming_frame_size, acked_stream_window);
+      grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      return err;
+    }
+  }
+
+  UpdateAnnouncedWindowDelta(tfc_, -incoming_frame_size);
+  local_window_delta_ -= incoming_frame_size;
+  tfc_->CommitRecvData(incoming_frame_size);
+  return GRPC_ERROR_NONE;
+}
+
+uint32_t StreamFlowControl::MaybeSendUpdate() {
+  FlowControlTrace trace("s updt sent", tfc_, this);
+  if (local_window_delta_ > announced_window_delta_) {
+    uint32_t announce = static_cast<uint32_t> GPR_CLAMP(
+        local_window_delta_ - announced_window_delta_, 0, kMaxWindowUpdateSize);
+    UpdateAnnouncedWindowDelta(tfc_, announce);
+    return announce;
+  }
+  return 0;
+}
+
+void StreamFlowControl::IncomingByteStreamUpdate(size_t max_size_hint,
+                                                 size_t have_already) {
+  FlowControlTrace trace("app st recv", tfc_, this);
+  uint32_t max_recv_bytes;
+  uint32_t sent_init_window =
+      tfc_->transport()->settings[GRPC_SENT_SETTINGS]
+                                 [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+
+  /* clamp max recv hint to an allowable size */
+  if (max_size_hint >= UINT32_MAX - sent_init_window) {
+    max_recv_bytes = UINT32_MAX - sent_init_window;
+  } else {
+    max_recv_bytes = static_cast<uint32_t>(max_size_hint);
+  }
+
+  /* account for bytes already received but unknown to higher layers */
+  if (max_recv_bytes >= have_already) {
+    max_recv_bytes -= static_cast<uint32_t>(have_already);
+  } else {
+    max_recv_bytes = 0;
+  }
+
+  /* add some small lookahead to keep pipelines flowing */
+  GPR_ASSERT(max_recv_bytes <= UINT32_MAX - sent_init_window);
+  if (local_window_delta_ < max_recv_bytes) {
+    uint32_t add_max_recv_bytes =
+        static_cast<uint32_t>(max_recv_bytes - local_window_delta_);
+    local_window_delta_ += add_max_recv_bytes;
+  }
+}
+
+// Take in a target and modifies it based on the memory pressure of the system
+static double AdjustForMemoryPressure(grpc_resource_quota* quota,
+                                      double target) {
+  // do not increase window under heavy memory pressure.
+  double memory_pressure = grpc_resource_quota_get_memory_pressure(quota);
+  static const double kLowMemPressure = 0.1;
+  static const double kZeroTarget = 22;
+  static const double kHighMemPressure = 0.8;
+  static const double kMaxMemPressure = 0.9;
+  if (memory_pressure < kLowMemPressure && target < kZeroTarget) {
+    target = (target - kZeroTarget) * memory_pressure / kLowMemPressure +
+             kZeroTarget;
+  } else if (memory_pressure > kHighMemPressure) {
+    target *= 1 - GPR_MIN(1, (memory_pressure - kHighMemPressure) /
+                                 (kMaxMemPressure - kHighMemPressure));
+  }
+  return target;
+}
+
+double TransportFlowControl::TargetLogBdp() {
+  return AdjustForMemoryPressure(
+      grpc_resource_user_quota(grpc_endpoint_get_resource_user(t_->ep)),
+      1 + log2(bdp_estimator_.EstimateBdp()));
+}
+
+double TransportFlowControl::SmoothLogBdp(double value) {
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+  double bdp_error = value - pid_controller_.last_control_value();
+  const double dt = static_cast<double>(now - last_pid_update_) * 1e-3;
+  last_pid_update_ = now;
+  // Limit dt to 100ms
+  const double kMaxDt = 0.1;
+  return pid_controller_.Update(bdp_error, dt > kMaxDt ? kMaxDt : dt);
+}
+
+FlowControlAction::Urgency TransportFlowControl::DeltaUrgency(
+    int64_t value, grpc_chttp2_setting_id setting_id) {
+  int64_t delta = value - static_cast<int64_t>(
+                              t_->settings[GRPC_LOCAL_SETTINGS][setting_id]);
+  // TODO(ncteisen): tune this
+  if (delta != 0 && (delta <= -value / 5 || delta >= value / 5)) {
+    return FlowControlAction::Urgency::QUEUE_UPDATE;
+  } else {
+    return FlowControlAction::Urgency::NO_ACTION_NEEDED;
+  }
+}
+
+FlowControlAction TransportFlowControl::PeriodicUpdate() {
+  FlowControlAction action;
+  if (enable_bdp_probe_) {
+    // get bdp estimate and update initial_window accordingly.
+    // target might change based on how much memory pressure we are under
+    // TODO(ncteisen): experiment with setting target to be huge under low
+    // memory pressure.
+    const double target = pow(2, SmoothLogBdp(TargetLogBdp()));
+
+    // Though initial window 'could' drop to 0, we keep the floor at 128
+    target_initial_window_size_ =
+        static_cast<int32_t> GPR_CLAMP(target, 128, INT32_MAX);
+
+    action.set_send_initial_window_update(
+        DeltaUrgency(target_initial_window_size_,
+                     GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE),
+        static_cast<uint32_t>(target_initial_window_size_));
+
+    // get bandwidth estimate and update max_frame accordingly.
+    double bw_dbl = bdp_estimator_.EstimateBandwidth();
+    // we target the max of BDP or bandwidth in microseconds.
+    int32_t frame_size = static_cast<int32_t> GPR_CLAMP(
+        GPR_MAX((int32_t)GPR_CLAMP(bw_dbl, 0, INT_MAX) / 1000,
+                target_initial_window_size_),
+        16384, 16777215);
+    action.set_send_max_frame_size_update(
+        DeltaUrgency(static_cast<int64_t>(frame_size),
+                     GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE),
+        frame_size);
+  }
+  return UpdateAction(action);
+}
+
+FlowControlAction StreamFlowControl::UpdateAction(FlowControlAction action) {
+  // TODO(ncteisen): tune this
+  if (!s_->read_closed) {
+    uint32_t sent_init_window =
+        tfc_->transport()->settings[GRPC_SENT_SETTINGS]
+                                   [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE];
+    if (local_window_delta_ > announced_window_delta_ &&
+        announced_window_delta_ + sent_init_window <= sent_init_window / 2) {
+      action.set_send_stream_update(
+          FlowControlAction::Urgency::UPDATE_IMMEDIATELY);
+    } else if (local_window_delta_ > announced_window_delta_) {
+      action.set_send_stream_update(FlowControlAction::Urgency::QUEUE_UPDATE);
+    }
+  }
+
+  return action;
+}
+
+}  // namespace chttp2
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.h
new file mode 100644
index 0000000..f083ab1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/flow_control.h	
@@ -0,0 +1,474 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FLOW_CONTROL_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FLOW_CONTROL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/transport/bdp_estimator.h"
+#include "src/core/lib/transport/pid_controller.h"
+
+struct grpc_chttp2_transport;
+struct grpc_chttp2_stream;
+
+extern grpc_core::TraceFlag grpc_flowctl_trace;
+
+namespace grpc {
+namespace testing {
+class TrickledCHTTP2;  // to make this a friend
+}  // namespace testing
+}  // namespace grpc
+
+namespace grpc_core {
+namespace chttp2 {
+
+static constexpr uint32_t kDefaultWindow = 65535;
+static constexpr int64_t kMaxWindow = static_cast<int64_t>((1u << 31) - 1);
+// TODO(ncteisen): Tune this
+static constexpr uint32_t kFrameSize = 1024 * 1024;
+
+class TransportFlowControl;
+class StreamFlowControl;
+
+// Encapsulates a collections of actions the transport needs to take with
+// regard to flow control. Each action comes with urgencies that tell the
+// transport how quickly the action must take place.
+class FlowControlAction {
+ public:
+  enum class Urgency : uint8_t {
+    // Nothing to be done.
+    NO_ACTION_NEEDED = 0,
+    // Initiate a write to update the initial window immediately.
+    UPDATE_IMMEDIATELY,
+    // Push the flow control update into a send buffer, to be sent
+    // out the next time a write is initiated.
+    QUEUE_UPDATE,
+  };
+
+  Urgency send_stream_update() const { return send_stream_update_; }
+  Urgency send_transport_update() const { return send_transport_update_; }
+  Urgency send_initial_window_update() const {
+    return send_initial_window_update_;
+  }
+  Urgency send_max_frame_size_update() const {
+    return send_max_frame_size_update_;
+  }
+  uint32_t initial_window_size() const { return initial_window_size_; }
+  uint32_t max_frame_size() const { return max_frame_size_; }
+
+  FlowControlAction& set_send_stream_update(Urgency u) {
+    send_stream_update_ = u;
+    return *this;
+  }
+  FlowControlAction& set_send_transport_update(Urgency u) {
+    send_transport_update_ = u;
+    return *this;
+  }
+  FlowControlAction& set_send_initial_window_update(Urgency u,
+                                                    uint32_t update) {
+    send_initial_window_update_ = u;
+    initial_window_size_ = update;
+    return *this;
+  }
+  FlowControlAction& set_send_max_frame_size_update(Urgency u,
+                                                    uint32_t update) {
+    send_max_frame_size_update_ = u;
+    max_frame_size_ = update;
+    return *this;
+  }
+
+  static const char* UrgencyString(Urgency u);
+  void Trace(grpc_chttp2_transport* t) const;
+
+ private:
+  Urgency send_stream_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_transport_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_initial_window_update_ = Urgency::NO_ACTION_NEEDED;
+  Urgency send_max_frame_size_update_ = Urgency::NO_ACTION_NEEDED;
+  uint32_t initial_window_size_ = 0;
+  uint32_t max_frame_size_ = 0;
+};
+
+class FlowControlTrace {
+ public:
+  FlowControlTrace(const char* reason, TransportFlowControl* tfc,
+                   StreamFlowControl* sfc) {
+    if (enabled_) Init(reason, tfc, sfc);
+  }
+
+  ~FlowControlTrace() {
+    if (enabled_) Finish();
+  }
+
+ private:
+  void Init(const char* reason, TransportFlowControl* tfc,
+            StreamFlowControl* sfc);
+  void Finish();
+
+  const bool enabled_ = GRPC_TRACE_FLAG_ENABLED(grpc_flowctl_trace);
+
+  TransportFlowControl* tfc_;
+  StreamFlowControl* sfc_;
+  const char* reason_;
+  int64_t remote_window_;
+  int64_t target_window_;
+  int64_t announced_window_;
+  int64_t remote_window_delta_;
+  int64_t local_window_delta_;
+  int64_t announced_window_delta_;
+};
+
+// Fat interface with all methods a flow control implementation needs to
+// support. gRPC C Core does not support pure virtual functions, so instead
+// we abort in any methods which require implementation in the base class.
+class TransportFlowControlBase {
+ public:
+  TransportFlowControlBase() {}
+  virtual ~TransportFlowControlBase() {}
+
+  // Is flow control enabled? This is needed in other codepaths like the checks
+  // in parsing and in writing.
+  virtual bool flow_control_enabled() const { abort(); }
+
+  // Called to check if the transport needs to send a WINDOW_UPDATE frame
+  virtual uint32_t MaybeSendUpdate(bool /* writing_anyway */) { abort(); }
+
+  // Using the protected members, returns and Action to be taken by the
+  // tranport.
+  virtual FlowControlAction MakeAction() { abort(); }
+
+  // Using the protected members, returns and Action to be taken by the
+  // tranport. Also checks for updates to our BDP estimate and acts
+  // accordingly.
+  virtual FlowControlAction PeriodicUpdate() { abort(); }
+
+  // Called to do bookkeeping when a stream owned by this transport sends
+  // data on the wire
+  virtual void StreamSentData(int64_t /* size */) { abort(); }
+
+  // Called to do bookkeeping when a stream owned by this transport receives
+  // data from the wire. Also does error checking for frame size.
+  virtual grpc_error* RecvData(int64_t /* incoming_frame_size */) { abort(); }
+
+  // Called to do bookkeeping when we receive a WINDOW_UPDATE frame.
+  virtual void RecvUpdate(uint32_t /* size */) { abort(); }
+
+  // Returns the BdpEstimator held by this object. Caller is responsible for
+  // checking for nullptr. TODO(ncteisen): consider fully encapsulating all
+  // bdp estimator actions inside TransportFlowControl
+  virtual BdpEstimator* bdp_estimator() { return nullptr; }
+
+  // Getters
+  int64_t remote_window() const { return remote_window_; }
+  virtual int64_t target_window() const { return target_initial_window_size_; }
+  int64_t announced_window() const { return announced_window_; }
+
+  // Used in certain benchmarks in which we don't want FlowControl to be a
+  // factor
+  virtual void TestOnlyForceHugeWindow() {}
+
+ protected:
+  friend class ::grpc::testing::TrickledCHTTP2;
+  int64_t remote_window_ = kDefaultWindow;
+  int64_t target_initial_window_size_ = kDefaultWindow;
+  int64_t announced_window_ = kDefaultWindow;
+};
+
+// Implementation of flow control that does NOTHING. Always returns maximum
+// values, never initiates writes, and assumes that the remote peer is doing
+// the same. To be used to narrow down on flow control as the cause of negative
+// performance.
+class TransportFlowControlDisabled final : public TransportFlowControlBase {
+ public:
+  // Maxes out all values
+  TransportFlowControlDisabled(grpc_chttp2_transport* t);
+
+  bool flow_control_enabled() const override { return false; }
+
+  // Never do anything.
+  uint32_t MaybeSendUpdate(bool /* writing_anyway */) override { return 0; }
+  FlowControlAction MakeAction() override { return FlowControlAction(); }
+  FlowControlAction PeriodicUpdate() override { return FlowControlAction(); }
+  void StreamSentData(int64_t /* size */) override {}
+  grpc_error* RecvData(int64_t /* incoming_frame_size */) override {
+    return GRPC_ERROR_NONE;
+  }
+  void RecvUpdate(uint32_t /* size */) override {}
+};
+
+// Implementation of flow control that abides to HTTP/2 spec and attempts
+// to be as performant as possible.
+class TransportFlowControl final : public TransportFlowControlBase {
+ public:
+  TransportFlowControl(const grpc_chttp2_transport* t, bool enable_bdp_probe);
+  ~TransportFlowControl() {}
+
+  bool flow_control_enabled() const override { return true; }
+
+  bool bdp_probe() const { return enable_bdp_probe_; }
+
+  // returns an announce if we should send a transport update to our peer,
+  // else returns zero; writing_anyway indicates if a write would happen
+  // regardless of the send - if it is false and this function returns non-zero,
+  // this announce will cause a write to occur
+  uint32_t MaybeSendUpdate(bool writing_anyway) override;
+
+  // Reads the flow control data and returns and actionable struct that will
+  // tell chttp2 exactly what it needs to do
+  FlowControlAction MakeAction() override {
+    return UpdateAction(FlowControlAction());
+  }
+
+  // Call periodically (at a low-ish rate, 100ms - 10s makes sense)
+  // to perform more complex flow control calculations and return an action
+  // to let chttp2 change its parameters
+  FlowControlAction PeriodicUpdate() override;
+
+  void StreamSentData(int64_t size) override { remote_window_ -= size; }
+
+  grpc_error* ValidateRecvData(int64_t incoming_frame_size);
+  void CommitRecvData(int64_t incoming_frame_size) {
+    announced_window_ -= incoming_frame_size;
+  }
+
+  grpc_error* RecvData(int64_t incoming_frame_size) override {
+    FlowControlTrace trace("  data recv", this, nullptr);
+    grpc_error* error = ValidateRecvData(incoming_frame_size);
+    if (error != GRPC_ERROR_NONE) return error;
+    CommitRecvData(incoming_frame_size);
+    return GRPC_ERROR_NONE;
+  }
+
+  // we have received a WINDOW_UPDATE frame for a transport
+  void RecvUpdate(uint32_t size) override {
+    FlowControlTrace trace("t updt recv", this, nullptr);
+    remote_window_ += size;
+  }
+
+  // See comment above announced_stream_total_over_incoming_window_ for the
+  // logic behind this decision.
+  int64_t target_window() const override {
+    return static_cast<uint32_t> GPR_MIN(
+        (int64_t)((1u << 31) - 1),
+        announced_stream_total_over_incoming_window_ +
+            target_initial_window_size_);
+  }
+
+  const grpc_chttp2_transport* transport() const { return t_; }
+
+  void PreUpdateAnnouncedWindowOverIncomingWindow(int64_t delta) {
+    if (delta > 0) {
+      announced_stream_total_over_incoming_window_ -= delta;
+    }
+  }
+
+  void PostUpdateAnnouncedWindowOverIncomingWindow(int64_t delta) {
+    if (delta > 0) {
+      announced_stream_total_over_incoming_window_ += delta;
+    }
+  }
+
+  BdpEstimator* bdp_estimator() override { return &bdp_estimator_; }
+
+  void TestOnlyForceHugeWindow() override {
+    announced_window_ = 1024 * 1024 * 1024;
+    remote_window_ = 1024 * 1024 * 1024;
+  }
+
+ private:
+  double TargetLogBdp();
+  double SmoothLogBdp(double value);
+  FlowControlAction::Urgency DeltaUrgency(int64_t value,
+                                          grpc_chttp2_setting_id setting_id);
+
+  FlowControlAction UpdateAction(FlowControlAction action) {
+    if (announced_window_ < target_window() / 2) {
+      action.set_send_transport_update(
+          FlowControlAction::Urgency::UPDATE_IMMEDIATELY);
+    }
+    return action;
+  }
+
+  const grpc_chttp2_transport* const t_;
+
+  /** calculating what we should give for local window:
+      we track the total amount of flow control over initial window size
+      across all streams: this is data that we want to receive right now (it
+      has an outstanding read)
+      and the total amount of flow control under initial window size across all
+      streams: this is data we've read early
+      we want to adjust incoming_window such that:
+      incoming_window = total_over - max(bdp - total_under, 0) */
+  int64_t announced_stream_total_over_incoming_window_ = 0;
+
+  /** should we probe bdp? */
+  const bool enable_bdp_probe_;
+
+  /* bdp estimation */
+  grpc_core::BdpEstimator bdp_estimator_;
+
+  /* pid controller */
+  grpc_core::PidController pid_controller_;
+  grpc_millis last_pid_update_ = 0;
+};
+
+// Fat interface with all methods a stream flow control implementation needs
+// to support. gRPC C Core does not support pure virtual functions, so instead
+// we abort in any methods which require implementation in the base class.
+class StreamFlowControlBase {
+ public:
+  StreamFlowControlBase() {}
+  virtual ~StreamFlowControlBase() {}
+
+  // Updates an action using the protected members.
+  virtual FlowControlAction UpdateAction(FlowControlAction /* action */) {
+    abort();
+  }
+
+  // Using the protected members, returns an Action for this stream to be
+  // taken by the tranport.
+  virtual FlowControlAction MakeAction() { abort(); }
+
+  // Bookkeeping for when data is sent on this stream.
+  virtual void SentData(int64_t /* outgoing_frame_size */) { abort(); }
+
+  // Bookkeeping and error checking for when data is received by this stream.
+  virtual grpc_error* RecvData(int64_t /* incoming_frame_size */) { abort(); }
+
+  // Called to check if this stream needs to send a WINDOW_UPDATE frame.
+  virtual uint32_t MaybeSendUpdate() { abort(); }
+
+  // Bookkeeping for receiving a WINDOW_UPDATE from for this stream.
+  virtual void RecvUpdate(uint32_t /* size */) { abort(); }
+
+  // Bookkeeping for when a call pulls bytes out of the transport. At this
+  // point we consider the data 'used' and can thus let out peer know we are
+  // ready for more data.
+  virtual void IncomingByteStreamUpdate(size_t /* max_size_hint */,
+                                        size_t /* have_already */) {
+    abort();
+  }
+
+  // Used in certain benchmarks in which we don't want FlowControl to be a
+  // factor
+  virtual void TestOnlyForceHugeWindow() {}
+
+  // Getters
+  int64_t remote_window_delta() { return remote_window_delta_; }
+  int64_t local_window_delta() { return local_window_delta_; }
+  int64_t announced_window_delta() { return announced_window_delta_; }
+
+ protected:
+  friend class ::grpc::testing::TrickledCHTTP2;
+  int64_t remote_window_delta_ = 0;
+  int64_t local_window_delta_ = 0;
+  int64_t announced_window_delta_ = 0;
+};
+
+// Implementation of flow control that does NOTHING. Always returns maximum
+// values, never initiates writes, and assumes that the remote peer is doing
+// the same. To be used to narrow down on flow control as the cause of negative
+// performance.
+class StreamFlowControlDisabled : public StreamFlowControlBase {
+ public:
+  FlowControlAction UpdateAction(FlowControlAction action) override {
+    return action;
+  }
+  FlowControlAction MakeAction() override { return FlowControlAction(); }
+  void SentData(int64_t /* outgoing_frame_size */) override {}
+  grpc_error* RecvData(int64_t /* incoming_frame_size */) override {
+    return GRPC_ERROR_NONE;
+  }
+  uint32_t MaybeSendUpdate() override { return 0; }
+  void RecvUpdate(uint32_t /* size */) override {}
+  void IncomingByteStreamUpdate(size_t /* max_size_hint */,
+                                size_t /* have_already */) override {}
+};
+
+// Implementation of flow control that abides to HTTP/2 spec and attempts
+// to be as performant as possible.
+class StreamFlowControl final : public StreamFlowControlBase {
+ public:
+  StreamFlowControl(TransportFlowControl* tfc, const grpc_chttp2_stream* s);
+  ~StreamFlowControl() {
+    tfc_->PreUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+  }
+
+  FlowControlAction UpdateAction(FlowControlAction action) override;
+  FlowControlAction MakeAction() override {
+    return UpdateAction(tfc_->MakeAction());
+  }
+
+  // we have sent data on the wire, we must track this in our bookkeeping for
+  // the remote peer's flow control.
+  void SentData(int64_t outgoing_frame_size) override {
+    FlowControlTrace tracer("  data sent", tfc_, this);
+    tfc_->StreamSentData(outgoing_frame_size);
+    remote_window_delta_ -= outgoing_frame_size;
+  }
+
+  // we have received data from the wire
+  grpc_error* RecvData(int64_t incoming_frame_size) override;
+
+  // returns an announce if we should send a stream update to our peer, else
+  // returns zero
+  uint32_t MaybeSendUpdate() override;
+
+  // we have received a WINDOW_UPDATE frame for a stream
+  void RecvUpdate(uint32_t size) override {
+    FlowControlTrace trace("s updt recv", tfc_, this);
+    remote_window_delta_ += size;
+  }
+
+  // the application is asking for a certain amount of bytes
+  void IncomingByteStreamUpdate(size_t max_size_hint,
+                                size_t have_already) override;
+
+  int64_t remote_window_delta() const { return remote_window_delta_; }
+  int64_t local_window_delta() const { return local_window_delta_; }
+  int64_t announced_window_delta() const { return announced_window_delta_; }
+
+  const grpc_chttp2_stream* stream() const { return s_; }
+
+  void TestOnlyForceHugeWindow() override {
+    announced_window_delta_ = 1024 * 1024 * 1024;
+    local_window_delta_ = 1024 * 1024 * 1024;
+    remote_window_delta_ = 1024 * 1024 * 1024;
+  }
+
+ private:
+  TransportFlowControl* const tfc_;
+  const grpc_chttp2_stream* const s_;
+
+  void UpdateAnnouncedWindowDelta(TransportFlowControl* tfc, int64_t change) {
+    tfc->PreUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+    announced_window_delta_ += change;
+    tfc->PostUpdateAnnouncedWindowOverIncomingWindow(announced_window_delta_);
+  }
+};
+
+}  // namespace chttp2
+}  // namespace grpc_core
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame.h
new file mode 100644
index 0000000..083c007
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/* defined in internal.h */
+typedef struct grpc_chttp2_stream grpc_chttp2_stream;
+typedef struct grpc_chttp2_transport grpc_chttp2_transport;
+
+#define GRPC_CHTTP2_FRAME_DATA 0
+#define GRPC_CHTTP2_FRAME_HEADER 1
+#define GRPC_CHTTP2_FRAME_CONTINUATION 9
+#define GRPC_CHTTP2_FRAME_RST_STREAM 3
+#define GRPC_CHTTP2_FRAME_SETTINGS 4
+#define GRPC_CHTTP2_FRAME_PING 6
+#define GRPC_CHTTP2_FRAME_GOAWAY 7
+#define GRPC_CHTTP2_FRAME_WINDOW_UPDATE 8
+
+#define GRPC_CHTTP2_DATA_FLAG_END_STREAM 1
+#define GRPC_CHTTP2_FLAG_ACK 1
+#define GRPC_CHTTP2_DATA_FLAG_END_HEADERS 4
+#define GRPC_CHTTP2_DATA_FLAG_PADDED 8
+#define GRPC_CHTTP2_FLAG_HAS_PRIORITY 0x20
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.cc
new file mode 100644
index 0000000..d815654
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.cc	
@@ -0,0 +1,307 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_data.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/transport.h"
+
+grpc_chttp2_data_parser::~grpc_chttp2_data_parser() {
+  if (parsing_frame != nullptr) {
+    GRPC_ERROR_UNREF(parsing_frame->Finished(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Parser destroyed"), false));
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_error* grpc_chttp2_data_parser_begin_frame(
+    grpc_chttp2_data_parser* /*parser*/, uint8_t flags, uint32_t stream_id,
+    grpc_chttp2_stream* s) {
+  if (flags & ~GRPC_CHTTP2_DATA_FLAG_END_STREAM) {
+    char* msg;
+    gpr_asprintf(&msg, "unsupported data flags: 0x%02x", flags);
+    grpc_error* err = grpc_error_set_int(
+        GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg), GRPC_ERROR_INT_STREAM_ID,
+        static_cast<intptr_t>(stream_id));
+    gpr_free(msg);
+    return err;
+  }
+
+  if (flags & GRPC_CHTTP2_DATA_FLAG_END_STREAM) {
+    s->received_last_frame = true;
+    s->eos_received = true;
+  } else {
+    s->received_last_frame = false;
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer* inbuf,
+                             uint32_t write_bytes, int is_eof,
+                             grpc_transport_one_way_stats* stats,
+                             grpc_slice_buffer* outbuf) {
+  grpc_slice hdr;
+  uint8_t* p;
+  static const size_t header_size = 9;
+
+  hdr = GRPC_SLICE_MALLOC(header_size);
+  p = GRPC_SLICE_START_PTR(hdr);
+  GPR_ASSERT(write_bytes < (1 << 24));
+  *p++ = static_cast<uint8_t>(write_bytes >> 16);
+  *p++ = static_cast<uint8_t>(write_bytes >> 8);
+  *p++ = static_cast<uint8_t>(write_bytes);
+  *p++ = GRPC_CHTTP2_FRAME_DATA;
+  *p++ = is_eof ? GRPC_CHTTP2_DATA_FLAG_END_STREAM : 0;
+  *p++ = static_cast<uint8_t>(id >> 24);
+  *p++ = static_cast<uint8_t>(id >> 16);
+  *p++ = static_cast<uint8_t>(id >> 8);
+  *p++ = static_cast<uint8_t>(id);
+  grpc_slice_buffer_add(outbuf, hdr);
+
+  grpc_slice_buffer_move_first_no_ref(inbuf, write_bytes, outbuf);
+
+  stats->framing_bytes += header_size;
+  stats->data_bytes += write_bytes;
+}
+
+grpc_error* grpc_deframe_unprocessed_incoming_frames(
+    grpc_chttp2_data_parser* p, grpc_chttp2_stream* s,
+    grpc_slice_buffer* slices, grpc_slice* slice_out,
+    grpc_core::OrphanablePtr<grpc_core::ByteStream>* stream_out) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_chttp2_transport* t = s->t;
+
+  while (slices->count > 0) {
+    uint8_t* beg = nullptr;
+    uint8_t* end = nullptr;
+    uint8_t* cur = nullptr;
+
+    grpc_slice* slice = grpc_slice_buffer_peek_first(slices);
+    beg = GRPC_SLICE_START_PTR(*slice);
+    end = GRPC_SLICE_END_PTR(*slice);
+    cur = beg;
+    uint32_t message_flags;
+
+    if (cur == end) {
+      grpc_slice_buffer_remove_first(slices);
+      continue;
+    }
+
+    switch (p->state) {
+      case GRPC_CHTTP2_DATA_ERROR:
+        p->state = GRPC_CHTTP2_DATA_ERROR;
+        grpc_slice_buffer_remove_first(slices);
+        return GRPC_ERROR_REF(p->error);
+      case GRPC_CHTTP2_DATA_FH_0:
+        s->stats.incoming.framing_bytes++;
+        p->frame_type = *cur;
+        switch (p->frame_type) {
+          case 0:
+            p->is_frame_compressed = false; /* GPR_FALSE */
+            break;
+          case 1:
+            p->is_frame_compressed = true; /* GPR_TRUE */
+            break;
+          default:
+            char* msg;
+            gpr_asprintf(&msg, "Bad GRPC frame type 0x%02x", p->frame_type);
+            p->error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+            p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID,
+                                          static_cast<intptr_t>(s->id));
+            gpr_free(msg);
+            p->error = grpc_error_set_str(
+                p->error, GRPC_ERROR_STR_RAW_BYTES,
+                grpc_slice_from_moved_string(grpc_core::UniquePtr<char>(
+                    grpc_dump_slice(*slice, GPR_DUMP_HEX | GPR_DUMP_ASCII))));
+            p->error =
+                grpc_error_set_int(p->error, GRPC_ERROR_INT_OFFSET, cur - beg);
+            p->state = GRPC_CHTTP2_DATA_ERROR;
+            grpc_slice_buffer_remove_first(slices);
+            return GRPC_ERROR_REF(p->error);
+        }
+        if (++cur == end) {
+          p->state = GRPC_CHTTP2_DATA_FH_1;
+          grpc_slice_buffer_remove_first(slices);
+          continue;
+        }
+      /* fallthrough */
+      case GRPC_CHTTP2_DATA_FH_1:
+        s->stats.incoming.framing_bytes++;
+        p->frame_size = (static_cast<uint32_t>(*cur)) << 24;
+        if (++cur == end) {
+          p->state = GRPC_CHTTP2_DATA_FH_2;
+          grpc_slice_buffer_remove_first(slices);
+          continue;
+        }
+      /* fallthrough */
+      case GRPC_CHTTP2_DATA_FH_2:
+        s->stats.incoming.framing_bytes++;
+        p->frame_size |= (static_cast<uint32_t>(*cur)) << 16;
+        if (++cur == end) {
+          p->state = GRPC_CHTTP2_DATA_FH_3;
+          grpc_slice_buffer_remove_first(slices);
+          continue;
+        }
+      /* fallthrough */
+      case GRPC_CHTTP2_DATA_FH_3:
+        s->stats.incoming.framing_bytes++;
+        p->frame_size |= (static_cast<uint32_t>(*cur)) << 8;
+        if (++cur == end) {
+          p->state = GRPC_CHTTP2_DATA_FH_4;
+          grpc_slice_buffer_remove_first(slices);
+          continue;
+        }
+      /* fallthrough */
+      case GRPC_CHTTP2_DATA_FH_4:
+        s->stats.incoming.framing_bytes++;
+        GPR_ASSERT(stream_out != nullptr);
+        GPR_ASSERT(p->parsing_frame == nullptr);
+        p->frame_size |= (static_cast<uint32_t>(*cur));
+        if (t->channelz_socket != nullptr) {
+          t->channelz_socket->RecordMessageReceived();
+        }
+        p->state = GRPC_CHTTP2_DATA_FRAME;
+        ++cur;
+        message_flags = 0;
+        if (p->is_frame_compressed) {
+          message_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
+        }
+        p->parsing_frame = new grpc_core::Chttp2IncomingByteStream(
+            t, s, p->frame_size, message_flags);
+        stream_out->reset(p->parsing_frame);
+        if (p->parsing_frame->remaining_bytes() == 0) {
+          GRPC_ERROR_UNREF(p->parsing_frame->Finished(GRPC_ERROR_NONE, true));
+          p->parsing_frame = nullptr;
+          p->state = GRPC_CHTTP2_DATA_FH_0;
+        }
+        s->pending_byte_stream = true;
+        if (cur != end) {
+          grpc_slice_buffer_sub_first(slices, static_cast<size_t>(cur - beg),
+                                      static_cast<size_t>(end - beg));
+        } else {
+          grpc_slice_buffer_remove_first(slices);
+        }
+        return GRPC_ERROR_NONE;
+      case GRPC_CHTTP2_DATA_FRAME: {
+        GPR_ASSERT(p->parsing_frame != nullptr);
+        GPR_ASSERT(slice_out != nullptr);
+        if (cur == end) {
+          grpc_slice_buffer_remove_first(slices);
+          continue;
+        }
+        uint32_t remaining = static_cast<uint32_t>(end - cur);
+        if (remaining == p->frame_size) {
+          s->stats.incoming.data_bytes += remaining;
+          if (GRPC_ERROR_NONE !=
+              (error = p->parsing_frame->Push(
+                   grpc_slice_sub(*slice, static_cast<size_t>(cur - beg),
+                                  static_cast<size_t>(end - beg)),
+                   slice_out))) {
+            grpc_slice_buffer_remove_first(slices);
+            return error;
+          }
+          if (GRPC_ERROR_NONE !=
+              (error = p->parsing_frame->Finished(GRPC_ERROR_NONE, true))) {
+            grpc_slice_buffer_remove_first(slices);
+            return error;
+          }
+          p->parsing_frame = nullptr;
+          p->state = GRPC_CHTTP2_DATA_FH_0;
+          grpc_slice_buffer_remove_first(slices);
+          return GRPC_ERROR_NONE;
+        } else if (remaining < p->frame_size) {
+          s->stats.incoming.data_bytes += remaining;
+          if (GRPC_ERROR_NONE !=
+              (error = p->parsing_frame->Push(
+                   grpc_slice_sub(*slice, static_cast<size_t>(cur - beg),
+                                  static_cast<size_t>(end - beg)),
+                   slice_out))) {
+            return error;
+          }
+          p->frame_size -= remaining;
+          grpc_slice_buffer_remove_first(slices);
+          return GRPC_ERROR_NONE;
+        } else {
+          GPR_ASSERT(remaining > p->frame_size);
+          s->stats.incoming.data_bytes += p->frame_size;
+          if (GRPC_ERROR_NONE !=
+              p->parsing_frame->Push(
+                  grpc_slice_sub(
+                      *slice, static_cast<size_t>(cur - beg),
+                      static_cast<size_t>(cur + p->frame_size - beg)),
+                  slice_out)) {
+            grpc_slice_buffer_remove_first(slices);
+            return error;
+          }
+          if (GRPC_ERROR_NONE !=
+              (error = p->parsing_frame->Finished(GRPC_ERROR_NONE, true))) {
+            grpc_slice_buffer_remove_first(slices);
+            return error;
+          }
+          p->parsing_frame = nullptr;
+          p->state = GRPC_CHTTP2_DATA_FH_0;
+          cur += p->frame_size;
+          grpc_slice_buffer_sub_first(slices, static_cast<size_t>(cur - beg),
+                                      static_cast<size_t>(end - beg));
+          return GRPC_ERROR_NONE;
+        }
+      }
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_data_parser_parse(void* /*parser*/,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s,
+                                          const grpc_slice& slice,
+                                          int is_last) {
+  if (!s->pending_byte_stream) {
+    grpc_slice_ref_internal(slice);
+    grpc_slice_buffer_add(&s->frame_storage, slice);
+    grpc_chttp2_maybe_complete_recv_message(t, s);
+  } else if (s->on_next) {
+    GPR_ASSERT(s->frame_storage.length == 0);
+    grpc_slice_ref_internal(slice);
+    grpc_slice_buffer_add(&s->unprocessed_incoming_frames_buffer, slice);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->on_next, GRPC_ERROR_NONE);
+    s->on_next = nullptr;
+    s->unprocessed_incoming_frames_decompressed = false;
+  } else {
+    grpc_slice_ref_internal(slice);
+    grpc_slice_buffer_add(&s->frame_storage, slice);
+  }
+
+  if (is_last && s->received_last_frame) {
+    grpc_chttp2_mark_stream_closed(t, s, true, false, GRPC_ERROR_NONE);
+  }
+
+  return GRPC_ERROR_NONE;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.h
new file mode 100644
index 0000000..ec38900
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_data.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H
+
+/* Parser for GRPC streams embedded in DATA frames */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef enum {
+  GRPC_CHTTP2_DATA_FH_0,
+  GRPC_CHTTP2_DATA_FH_1,
+  GRPC_CHTTP2_DATA_FH_2,
+  GRPC_CHTTP2_DATA_FH_3,
+  GRPC_CHTTP2_DATA_FH_4,
+  GRPC_CHTTP2_DATA_FRAME,
+  GRPC_CHTTP2_DATA_ERROR
+} grpc_chttp2_stream_state;
+
+namespace grpc_core {
+class Chttp2IncomingByteStream;
+}  // namespace grpc_core
+
+struct grpc_chttp2_data_parser {
+  grpc_chttp2_data_parser() = default;
+  ~grpc_chttp2_data_parser();
+
+  grpc_chttp2_stream_state state = GRPC_CHTTP2_DATA_FH_0;
+  uint8_t frame_type = 0;
+  uint32_t frame_size = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  bool is_frame_compressed = false;
+  grpc_core::Chttp2IncomingByteStream* parsing_frame = nullptr;
+};
+
+/* start processing a new data frame */
+grpc_error* grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser* parser,
+                                                uint8_t flags,
+                                                uint32_t stream_id,
+                                                grpc_chttp2_stream* s);
+
+/* handle a slice of a data frame - is_last indicates the last slice of a
+   frame */
+grpc_error* grpc_chttp2_data_parser_parse(void* parser,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s,
+                                          const grpc_slice& slice, int is_last);
+
+void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer* inbuf,
+                             uint32_t write_bytes, int is_eof,
+                             grpc_transport_one_way_stats* stats,
+                             grpc_slice_buffer* outbuf);
+
+grpc_error* grpc_deframe_unprocessed_incoming_frames(
+    grpc_chttp2_data_parser* p, grpc_chttp2_stream* s,
+    grpc_slice_buffer* slices, grpc_slice* slice_out,
+    grpc_core::OrphanablePtr<grpc_core::ByteStream>* stream_out);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.cc
new file mode 100644
index 0000000..c1916a1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.cc	
@@ -0,0 +1,187 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_goaway.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser* p) {
+  p->debug_data = nullptr;
+}
+
+void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser* p) {
+  gpr_free(p->debug_data);
+}
+
+grpc_error* grpc_chttp2_goaway_parser_begin_frame(grpc_chttp2_goaway_parser* p,
+                                                  uint32_t length,
+                                                  uint8_t /*flags*/) {
+  if (length < 8) {
+    char* msg;
+    gpr_asprintf(&msg, "goaway frame too short (%d bytes)", length);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+
+  gpr_free(p->debug_data);
+  p->debug_length = length - 8;
+  p->debug_data = static_cast<char*>(gpr_malloc(p->debug_length));
+  p->debug_pos = 0;
+  p->state = GRPC_CHTTP2_GOAWAY_LSI0;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_goaway_parser_parse(void* parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* /*s*/,
+                                            const grpc_slice& slice,
+                                            int is_last) {
+  const uint8_t* const beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* const end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_chttp2_goaway_parser* p =
+      static_cast<grpc_chttp2_goaway_parser*>(parser);
+
+  switch (p->state) {
+    case GRPC_CHTTP2_GOAWAY_LSI0:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_LSI0;
+        return GRPC_ERROR_NONE;
+      }
+      p->last_stream_id = (static_cast<uint32_t>(*cur)) << 24;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_LSI1:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_LSI1;
+        return GRPC_ERROR_NONE;
+      }
+      p->last_stream_id |= (static_cast<uint32_t>(*cur)) << 16;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_LSI2:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_LSI2;
+        return GRPC_ERROR_NONE;
+      }
+      p->last_stream_id |= (static_cast<uint32_t>(*cur)) << 8;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_LSI3:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_LSI3;
+        return GRPC_ERROR_NONE;
+      }
+      p->last_stream_id |= (static_cast<uint32_t>(*cur));
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_ERR0:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_ERR0;
+        return GRPC_ERROR_NONE;
+      }
+      p->error_code = (static_cast<uint32_t>(*cur)) << 24;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_ERR1:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_ERR1;
+        return GRPC_ERROR_NONE;
+      }
+      p->error_code |= (static_cast<uint32_t>(*cur)) << 16;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_ERR2:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_ERR2;
+        return GRPC_ERROR_NONE;
+      }
+      p->error_code |= (static_cast<uint32_t>(*cur)) << 8;
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_ERR3:
+      if (cur == end) {
+        p->state = GRPC_CHTTP2_GOAWAY_ERR3;
+        return GRPC_ERROR_NONE;
+      }
+      p->error_code |= (static_cast<uint32_t>(*cur));
+      ++cur;
+    /* fallthrough */
+    case GRPC_CHTTP2_GOAWAY_DEBUG:
+      if (end != cur)
+        memcpy(p->debug_data + p->debug_pos, cur,
+               static_cast<size_t>(end - cur));
+      GPR_ASSERT((size_t)(end - cur) < UINT32_MAX - p->debug_pos);
+      p->debug_pos += static_cast<uint32_t>(end - cur);
+      p->state = GRPC_CHTTP2_GOAWAY_DEBUG;
+      if (is_last) {
+        grpc_chttp2_add_incoming_goaway(
+            t, p->error_code, p->last_stream_id,
+            grpc_slice_new(p->debug_data, p->debug_length, gpr_free));
+        p->debug_data = nullptr;
+      }
+      return GRPC_ERROR_NONE;
+  }
+  GPR_UNREACHABLE_CODE(
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Should never reach here"));
+}
+
+void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
+                               const grpc_slice& debug_data,
+                               grpc_slice_buffer* slice_buffer) {
+  grpc_slice header = GRPC_SLICE_MALLOC(9 + 4 + 4);
+  uint8_t* p = GRPC_SLICE_START_PTR(header);
+  uint32_t frame_length;
+  GPR_ASSERT(GRPC_SLICE_LENGTH(debug_data) < UINT32_MAX - 4 - 4);
+  frame_length = 4 + 4 + static_cast<uint32_t> GRPC_SLICE_LENGTH(debug_data);
+
+  /* frame header: length */
+  *p++ = static_cast<uint8_t>(frame_length >> 16);
+  *p++ = static_cast<uint8_t>(frame_length >> 8);
+  *p++ = static_cast<uint8_t>(frame_length);
+  /* frame header: type */
+  *p++ = GRPC_CHTTP2_FRAME_GOAWAY;
+  /* frame header: flags */
+  *p++ = 0;
+  /* frame header: stream id */
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  /* payload: last stream id */
+  *p++ = static_cast<uint8_t>(last_stream_id >> 24);
+  *p++ = static_cast<uint8_t>(last_stream_id >> 16);
+  *p++ = static_cast<uint8_t>(last_stream_id >> 8);
+  *p++ = static_cast<uint8_t>(last_stream_id);
+  /* payload: error code */
+  *p++ = static_cast<uint8_t>(error_code >> 24);
+  *p++ = static_cast<uint8_t>(error_code >> 16);
+  *p++ = static_cast<uint8_t>(error_code >> 8);
+  *p++ = static_cast<uint8_t>(error_code);
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(header));
+  grpc_slice_buffer_add(slice_buffer, header);
+  grpc_slice_buffer_add(slice_buffer, debug_data);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.h
new file mode 100644
index 0000000..6f65bb2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_goaway.h	
@@ -0,0 +1,63 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+
+typedef enum {
+  GRPC_CHTTP2_GOAWAY_LSI0,
+  GRPC_CHTTP2_GOAWAY_LSI1,
+  GRPC_CHTTP2_GOAWAY_LSI2,
+  GRPC_CHTTP2_GOAWAY_LSI3,
+  GRPC_CHTTP2_GOAWAY_ERR0,
+  GRPC_CHTTP2_GOAWAY_ERR1,
+  GRPC_CHTTP2_GOAWAY_ERR2,
+  GRPC_CHTTP2_GOAWAY_ERR3,
+  GRPC_CHTTP2_GOAWAY_DEBUG
+} grpc_chttp2_goaway_parse_state;
+
+typedef struct {
+  grpc_chttp2_goaway_parse_state state;
+  uint32_t last_stream_id;
+  uint32_t error_code;
+  char* debug_data;
+  uint32_t debug_length;
+  uint32_t debug_pos;
+} grpc_chttp2_goaway_parser;
+
+void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser* p);
+void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser* p);
+grpc_error* grpc_chttp2_goaway_parser_begin_frame(
+    grpc_chttp2_goaway_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_goaway_parser_parse(void* parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s,
+                                            const grpc_slice& slice,
+                                            int is_last);
+
+void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
+                               const grpc_slice& debug_data,
+                               grpc_slice_buffer* slice_buffer);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.cc
new file mode 100644
index 0000000..9ecd7a8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.cc	
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_ping.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+static bool g_disable_ping_ack = false;
+
+grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint64_t opaque_8bytes) {
+  grpc_slice slice = GRPC_SLICE_MALLOC(9 + 8);
+  uint8_t* p = GRPC_SLICE_START_PTR(slice);
+
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 8;
+  *p++ = GRPC_CHTTP2_FRAME_PING;
+  *p++ = ack ? 1 : 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 56);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 48);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 40);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 32);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 24);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 16);
+  *p++ = static_cast<uint8_t>(opaque_8bytes >> 8);
+  *p++ = static_cast<uint8_t>(opaque_8bytes);
+
+  return slice;
+}
+
+grpc_error* grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser* parser,
+                                                uint32_t length,
+                                                uint8_t flags) {
+  if (flags & 0xfe || length != 8) {
+    char* msg;
+    gpr_asprintf(&msg, "invalid ping: length=%d, flags=%02x", length, flags);
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return error;
+  }
+  parser->byte = 0;
+  parser->is_ack = flags;
+  parser->opaque_8bytes = 0;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_ping_parser_parse(void* parser,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* /*s*/,
+                                          const grpc_slice& slice,
+                                          int is_last) {
+  const uint8_t* const beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* const end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_chttp2_ping_parser* p = static_cast<grpc_chttp2_ping_parser*>(parser);
+
+  while (p->byte != 8 && cur != end) {
+    p->opaque_8bytes |= ((static_cast<uint64_t>(*cur)) << (56 - 8 * p->byte));
+    cur++;
+    p->byte++;
+  }
+
+  if (p->byte == 8) {
+    GPR_ASSERT(is_last);
+    if (p->is_ack) {
+      grpc_chttp2_ack_ping(t, p->opaque_8bytes);
+    } else {
+      if (!t->is_client) {
+        grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+        grpc_millis next_allowed_ping =
+            t->ping_recv_state.last_ping_recv_time +
+            t->ping_policy.min_recv_ping_interval_without_data;
+
+        if (t->keepalive_permit_without_calls == 0 &&
+            grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+          /* According to RFC1122, the interval of TCP Keep-Alive is default to
+             no less than two hours. When there is no outstanding streams, we
+             restrict the number of PINGS equivalent to TCP Keep-Alive. */
+          next_allowed_ping =
+              t->ping_recv_state.last_ping_recv_time + 7200 * GPR_MS_PER_SEC;
+        }
+
+        if (next_allowed_ping > now) {
+          grpc_chttp2_add_ping_strike(t);
+        }
+
+        t->ping_recv_state.last_ping_recv_time = now;
+      }
+      if (!g_disable_ping_ack) {
+        if (t->ping_ack_count == t->ping_ack_capacity) {
+          t->ping_ack_capacity = GPR_MAX(t->ping_ack_capacity * 3 / 2, 3);
+          t->ping_acks = static_cast<uint64_t*>(gpr_realloc(
+              t->ping_acks, t->ping_ack_capacity * sizeof(*t->ping_acks)));
+        }
+        t->num_pending_induced_frames++;
+        t->ping_acks[t->ping_ack_count++] = p->opaque_8bytes;
+        grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE);
+      }
+    }
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_set_disable_ping_ack(bool disable_ping_ack) {
+  g_disable_ping_ack = disable_ping_ack;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.h
new file mode 100644
index 0000000..915d023
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_ping.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t is_ack;
+  uint64_t opaque_8bytes;
+} grpc_chttp2_ping_parser;
+
+grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint64_t opaque_8bytes);
+
+grpc_error* grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser* parser,
+                                                uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_ping_parser_parse(void* parser,
+                                          grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s,
+                                          const grpc_slice& slice, int is_last);
+
+/* Test-only function for disabling ping ack */
+void grpc_set_disable_ping_ack(bool disable_ping_ack);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
new file mode 100644
index 0000000..1350a96
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_rst_stream.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code,
+                                         grpc_transport_one_way_stats* stats) {
+  static const size_t frame_size = 13;
+  grpc_slice slice = GRPC_SLICE_MALLOC(frame_size);
+  if (stats != nullptr) stats->framing_bytes += frame_size;
+  uint8_t* p = GRPC_SLICE_START_PTR(slice);
+
+  // Frame size.
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 4;
+  // Frame type.
+  *p++ = GRPC_CHTTP2_FRAME_RST_STREAM;
+  // Flags.
+  *p++ = 0;
+  // Stream ID.
+  *p++ = static_cast<uint8_t>(id >> 24);
+  *p++ = static_cast<uint8_t>(id >> 16);
+  *p++ = static_cast<uint8_t>(id >> 8);
+  *p++ = static_cast<uint8_t>(id);
+  // Error code.
+  *p++ = static_cast<uint8_t>(code >> 24);
+  *p++ = static_cast<uint8_t>(code >> 16);
+  *p++ = static_cast<uint8_t>(code >> 8);
+  *p++ = static_cast<uint8_t>(code);
+
+  return slice;
+}
+
+void grpc_chttp2_add_rst_stream_to_next_write(
+    grpc_chttp2_transport* t, uint32_t id, uint32_t code,
+    grpc_transport_one_way_stats* stats) {
+  t->num_pending_induced_frames++;
+  grpc_slice_buffer_add(&t->qbuf,
+                        grpc_chttp2_rst_stream_create(id, code, stats));
+}
+
+grpc_error* grpc_chttp2_rst_stream_parser_begin_frame(
+    grpc_chttp2_rst_stream_parser* parser, uint32_t length, uint8_t flags) {
+  if (length != 4) {
+    char* msg;
+    gpr_asprintf(&msg, "invalid rst_stream: length=%d, flags=%02x", length,
+                 flags);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  parser->byte = 0;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_rst_stream_parser_parse(void* parser,
+                                                grpc_chttp2_transport* t,
+                                                grpc_chttp2_stream* s,
+                                                const grpc_slice& slice,
+                                                int is_last) {
+  const uint8_t* const beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* const end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_chttp2_rst_stream_parser* p =
+      static_cast<grpc_chttp2_rst_stream_parser*>(parser);
+
+  while (p->byte != 4 && cur != end) {
+    p->reason_bytes[p->byte] = *cur;
+    cur++;
+    p->byte++;
+  }
+  s->stats.incoming.framing_bytes += static_cast<uint64_t>(end - cur);
+
+  if (p->byte == 4) {
+    GPR_ASSERT(is_last);
+    uint32_t reason = ((static_cast<uint32_t>(p->reason_bytes[0])) << 24) |
+                      ((static_cast<uint32_t>(p->reason_bytes[1])) << 16) |
+                      ((static_cast<uint32_t>(p->reason_bytes[2])) << 8) |
+                      ((static_cast<uint32_t>(p->reason_bytes[3])));
+    grpc_error* error = GRPC_ERROR_NONE;
+    if (reason != GRPC_HTTP2_NO_ERROR || s->metadata_buffer[1].size == 0) {
+      char* message;
+      gpr_asprintf(&message, "Received RST_STREAM with error code %d", reason);
+      error = grpc_error_set_int(
+          grpc_error_set_str(GRPC_ERROR_CREATE_FROM_STATIC_STRING("RST_STREAM"),
+                             GRPC_ERROR_STR_GRPC_MESSAGE,
+                             grpc_slice_from_moved_string(
+                                 grpc_core::UniquePtr<char>(message))),
+          GRPC_ERROR_INT_HTTP2_ERROR, static_cast<intptr_t>(reason));
+    }
+    grpc_chttp2_mark_stream_closed(t, s, true, true, error);
+  }
+
+  return GRPC_ERROR_NONE;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.h
new file mode 100644
index 0000000..d61e623
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_rst_stream.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t reason_bytes[4];
+} grpc_chttp2_rst_stream_parser;
+
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code,
+                                         grpc_transport_one_way_stats* stats);
+
+// Adds RST_STREAM frame to t->qbuf (buffer for the next write). Should be
+// called when we want to add RST_STREAM and we are not in
+// write_action_begin_locked.
+void grpc_chttp2_add_rst_stream_to_next_write(
+    grpc_chttp2_transport* t, uint32_t id, uint32_t code,
+    grpc_transport_one_way_stats* stats);
+
+grpc_error* grpc_chttp2_rst_stream_parser_begin_frame(
+    grpc_chttp2_rst_stream_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_rst_stream_parser_parse(void* parser,
+                                                grpc_chttp2_transport* t,
+                                                grpc_chttp2_stream* s,
+                                                const grpc_slice& slice,
+                                                int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.cc
new file mode 100644
index 0000000..60432d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.cc	
@@ -0,0 +1,242 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_settings.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+static uint8_t* fill_header(uint8_t* out, uint32_t length, uint8_t flags) {
+  *out++ = static_cast<uint8_t>(length >> 16);
+  *out++ = static_cast<uint8_t>(length >> 8);
+  *out++ = static_cast<uint8_t>(length);
+  *out++ = GRPC_CHTTP2_FRAME_SETTINGS;
+  *out++ = flags;
+  *out++ = 0;
+  *out++ = 0;
+  *out++ = 0;
+  *out++ = 0;
+  return out;
+}
+
+grpc_slice grpc_chttp2_settings_create(uint32_t* old_settings,
+                                       const uint32_t* new_settings,
+                                       uint32_t force_mask, size_t count) {
+  size_t i;
+  uint32_t n = 0;
+  grpc_slice output;
+  uint8_t* p;
+
+  for (i = 0; i < count; i++) {
+    n += (new_settings[i] != old_settings[i] || (force_mask & (1u << i)) != 0);
+  }
+
+  output = GRPC_SLICE_MALLOC(9 + 6 * n);
+  p = fill_header(GRPC_SLICE_START_PTR(output), 6 * n, 0);
+
+  for (i = 0; i < count; i++) {
+    if (new_settings[i] != old_settings[i] || (force_mask & (1u << i)) != 0) {
+      *p++ = static_cast<uint8_t>(grpc_setting_id_to_wire_id[i] >> 8);
+      *p++ = static_cast<uint8_t>(grpc_setting_id_to_wire_id[i]);
+      *p++ = static_cast<uint8_t>(new_settings[i] >> 24);
+      *p++ = static_cast<uint8_t>(new_settings[i] >> 16);
+      *p++ = static_cast<uint8_t>(new_settings[i] >> 8);
+      *p++ = static_cast<uint8_t>(new_settings[i]);
+      old_settings[i] = new_settings[i];
+    }
+  }
+
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(output));
+
+  return output;
+}
+
+grpc_slice grpc_chttp2_settings_ack_create(void) {
+  grpc_slice output = GRPC_SLICE_MALLOC(9);
+  fill_header(GRPC_SLICE_START_PTR(output), 0, GRPC_CHTTP2_FLAG_ACK);
+  return output;
+}
+
+grpc_error* grpc_chttp2_settings_parser_begin_frame(
+    grpc_chttp2_settings_parser* parser, uint32_t length, uint8_t flags,
+    uint32_t* settings) {
+  parser->target_settings = settings;
+  memcpy(parser->incoming_settings, settings,
+         GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
+  parser->is_ack = 0;
+  parser->state = GRPC_CHTTP2_SPS_ID0;
+  if (flags == GRPC_CHTTP2_FLAG_ACK) {
+    parser->is_ack = 1;
+    if (length != 0) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "non-empty settings ack frame received");
+    }
+    return GRPC_ERROR_NONE;
+  } else if (flags != 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "invalid flags on settings frame");
+  } else if (length % 6 != 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "settings frames must be a multiple of six bytes");
+  } else {
+    return GRPC_ERROR_NONE;
+  }
+}
+
+grpc_error* grpc_chttp2_settings_parser_parse(void* p, grpc_chttp2_transport* t,
+                                              grpc_chttp2_stream* /*s*/,
+                                              const grpc_slice& slice,
+                                              int is_last) {
+  grpc_chttp2_settings_parser* parser =
+      static_cast<grpc_chttp2_settings_parser*>(p);
+  const uint8_t* cur = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* end = GRPC_SLICE_END_PTR(slice);
+  char* msg;
+  grpc_chttp2_setting_id id;
+
+  if (parser->is_ack) {
+    return GRPC_ERROR_NONE;
+  }
+
+  for (;;) {
+    switch (parser->state) {
+      case GRPC_CHTTP2_SPS_ID0:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_ID0;
+          if (is_last) {
+            memcpy(parser->target_settings, parser->incoming_settings,
+                   GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
+            t->num_pending_induced_frames++;
+            grpc_slice_buffer_add(&t->qbuf, grpc_chttp2_settings_ack_create());
+            if (t->notify_on_receive_settings != nullptr) {
+              grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                                      t->notify_on_receive_settings,
+                                      GRPC_ERROR_NONE);
+              t->notify_on_receive_settings = nullptr;
+            }
+          }
+          return GRPC_ERROR_NONE;
+        }
+        parser->id = static_cast<uint16_t>((static_cast<uint16_t>(*cur)) << 8);
+        cur++;
+      /* fallthrough */
+      case GRPC_CHTTP2_SPS_ID1:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_ID1;
+          return GRPC_ERROR_NONE;
+        }
+        parser->id = static_cast<uint16_t>(parser->id | (*cur));
+        cur++;
+      /* fallthrough */
+      case GRPC_CHTTP2_SPS_VAL0:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_VAL0;
+          return GRPC_ERROR_NONE;
+        }
+        parser->value = (static_cast<uint32_t>(*cur)) << 24;
+        cur++;
+      /* fallthrough */
+      case GRPC_CHTTP2_SPS_VAL1:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_VAL1;
+          return GRPC_ERROR_NONE;
+        }
+        parser->value |= (static_cast<uint32_t>(*cur)) << 16;
+        cur++;
+      /* fallthrough */
+      case GRPC_CHTTP2_SPS_VAL2:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_VAL2;
+          return GRPC_ERROR_NONE;
+        }
+        parser->value |= (static_cast<uint32_t>(*cur)) << 8;
+        cur++;
+      /* fallthrough */
+      case GRPC_CHTTP2_SPS_VAL3:
+        if (cur == end) {
+          parser->state = GRPC_CHTTP2_SPS_VAL3;
+          return GRPC_ERROR_NONE;
+        } else {
+          parser->state = GRPC_CHTTP2_SPS_ID0;
+        }
+        parser->value |= *cur;
+        cur++;
+
+        if (grpc_wire_id_to_setting_id(parser->id, &id)) {
+          const grpc_chttp2_setting_parameters* sp =
+              &grpc_chttp2_settings_parameters[id];
+          // If flow control is disabled we skip these.
+          if (!t->flow_control->flow_control_enabled() &&
+              (id == GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE ||
+               id == GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE)) {
+            continue;
+          }
+          if (parser->value < sp->min_value || parser->value > sp->max_value) {
+            switch (sp->invalid_value_behavior) {
+              case GRPC_CHTTP2_CLAMP_INVALID_VALUE:
+                parser->value =
+                    GPR_CLAMP(parser->value, sp->min_value, sp->max_value);
+                break;
+              case GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE:
+                grpc_chttp2_goaway_append(
+                    t->last_new_stream_id, sp->error_value,
+                    grpc_slice_from_static_string("HTTP2 settings error"),
+                    &t->qbuf);
+                gpr_asprintf(&msg, "invalid value %u passed for %s",
+                             parser->value, sp->name);
+                grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+                gpr_free(msg);
+                return err;
+            }
+          }
+          if (id == GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE &&
+              parser->incoming_settings[id] != parser->value) {
+            t->initial_window_update += static_cast<int64_t>(parser->value) -
+                                        parser->incoming_settings[id];
+            if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace) ||
+                GRPC_TRACE_FLAG_ENABLED(grpc_flowctl_trace)) {
+              gpr_log(GPR_INFO, "%p[%s] adding %d for initial_window change", t,
+                      t->is_client ? "cli" : "svr",
+                      static_cast<int>(t->initial_window_update));
+            }
+          }
+          parser->incoming_settings[id] = parser->value;
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+            gpr_log(GPR_INFO, "CHTTP2:%s:%s: got setting %s = %d",
+                    t->is_client ? "CLI" : "SVR", t->peer_string, sp->name,
+                    parser->value);
+          }
+        } else if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+          gpr_log(GPR_ERROR, "CHTTP2: Ignoring unknown setting %d (value %d)",
+                  parser->id, parser->value);
+        }
+        break;
+    }
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.h
new file mode 100644
index 0000000..8a3ff04
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_settings.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
+
+typedef enum {
+  GRPC_CHTTP2_SPS_ID0,
+  GRPC_CHTTP2_SPS_ID1,
+  GRPC_CHTTP2_SPS_VAL0,
+  GRPC_CHTTP2_SPS_VAL1,
+  GRPC_CHTTP2_SPS_VAL2,
+  GRPC_CHTTP2_SPS_VAL3
+} grpc_chttp2_settings_parse_state;
+
+typedef struct {
+  grpc_chttp2_settings_parse_state state;
+  uint32_t* target_settings;
+  uint8_t is_ack;
+  uint16_t id;
+  uint32_t value;
+  uint32_t incoming_settings[GRPC_CHTTP2_NUM_SETTINGS];
+} grpc_chttp2_settings_parser;
+
+/* Create a settings frame by diffing old & new, and updating old to be new */
+grpc_slice grpc_chttp2_settings_create(uint32_t* old, const uint32_t* newval,
+                                       uint32_t force_mask, size_t count);
+/* Create an ack settings frame */
+grpc_slice grpc_chttp2_settings_ack_create(void);
+
+grpc_error* grpc_chttp2_settings_parser_begin_frame(
+    grpc_chttp2_settings_parser* parser, uint32_t length, uint8_t flags,
+    uint32_t* settings);
+grpc_error* grpc_chttp2_settings_parser_parse(void* parser,
+                                              grpc_chttp2_transport* t,
+                                              grpc_chttp2_stream* s,
+                                              const grpc_slice& slice,
+                                              int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.cc
new file mode 100644
index 0000000..80e799f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.cc	
@@ -0,0 +1,123 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame_window_update.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+grpc_slice grpc_chttp2_window_update_create(
+    uint32_t id, uint32_t window_update, grpc_transport_one_way_stats* stats) {
+  static const size_t frame_size = 13;
+  grpc_slice slice = GRPC_SLICE_MALLOC(frame_size);
+  stats->header_bytes += frame_size;
+  uint8_t* p = GRPC_SLICE_START_PTR(slice);
+
+  GPR_ASSERT(window_update);
+
+  *p++ = 0;
+  *p++ = 0;
+  *p++ = 4;
+  *p++ = GRPC_CHTTP2_FRAME_WINDOW_UPDATE;
+  *p++ = 0;
+  *p++ = static_cast<uint8_t>(id >> 24);
+  *p++ = static_cast<uint8_t>(id >> 16);
+  *p++ = static_cast<uint8_t>(id >> 8);
+  *p++ = static_cast<uint8_t>(id);
+  *p++ = static_cast<uint8_t>(window_update >> 24);
+  *p++ = static_cast<uint8_t>(window_update >> 16);
+  *p++ = static_cast<uint8_t>(window_update >> 8);
+  *p++ = static_cast<uint8_t>(window_update);
+
+  return slice;
+}
+
+grpc_error* grpc_chttp2_window_update_parser_begin_frame(
+    grpc_chttp2_window_update_parser* parser, uint32_t length, uint8_t flags) {
+  if (flags || length != 4) {
+    char* msg;
+    gpr_asprintf(&msg, "invalid window update: length=%d, flags=%02x", length,
+                 flags);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  parser->byte = 0;
+  parser->amount = 0;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_window_update_parser_parse(void* parser,
+                                                   grpc_chttp2_transport* t,
+                                                   grpc_chttp2_stream* s,
+                                                   const grpc_slice& slice,
+                                                   int is_last) {
+  const uint8_t* const beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* const end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_chttp2_window_update_parser* p =
+      static_cast<grpc_chttp2_window_update_parser*>(parser);
+
+  while (p->byte != 4 && cur != end) {
+    p->amount |= (static_cast<uint32_t>(*cur)) << (8 * (3 - p->byte));
+    cur++;
+    p->byte++;
+  }
+
+  if (s != nullptr) {
+    s->stats.incoming.framing_bytes += static_cast<uint32_t>(end - cur);
+  }
+
+  if (p->byte == 4) {
+    // top bit is reserved and must be ignored.
+    uint32_t received_update = p->amount & 0x7fffffffu;
+    if (received_update == 0) {
+      char* msg;
+      gpr_asprintf(&msg, "invalid window update bytes: %d", p->amount);
+      grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      return err;
+    }
+    GPR_ASSERT(is_last);
+
+    if (t->incoming_stream_id != 0) {
+      if (s != nullptr) {
+        s->flow_control->RecvUpdate(received_update);
+        if (grpc_chttp2_list_remove_stalled_by_stream(t, s)) {
+          grpc_chttp2_mark_stream_writable(t, s);
+          grpc_chttp2_initiate_write(
+              t, GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE);
+        }
+      }
+    } else {
+      bool was_zero = t->flow_control->remote_window() <= 0;
+      t->flow_control->RecvUpdate(received_update);
+      bool is_zero = t->flow_control->remote_window() <= 0;
+      if (was_zero && !is_zero) {
+        grpc_chttp2_initiate_write(
+            t, GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED);
+      }
+    }
+  }
+
+  return GRPC_ERROR_NONE;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.h
new file mode 100644
index 0000000..f6721a5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/frame_window_update.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct {
+  uint8_t byte;
+  uint8_t is_connection_update;
+  uint32_t amount;
+} grpc_chttp2_window_update_parser;
+
+grpc_slice grpc_chttp2_window_update_create(
+    uint32_t id, uint32_t window_delta, grpc_transport_one_way_stats* stats);
+
+grpc_error* grpc_chttp2_window_update_parser_begin_frame(
+    grpc_chttp2_window_update_parser* parser, uint32_t length, uint8_t flags);
+grpc_error* grpc_chttp2_window_update_parser_parse(void* parser,
+                                                   grpc_chttp2_transport* t,
+                                                   grpc_chttp2_stream* s,
+                                                   const grpc_slice& slice,
+                                                   int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.cc
new file mode 100644
index 0000000..16a4695
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.cc	
@@ -0,0 +1,887 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/hpack_encoder.h"
+
+#include <assert.h>
+#include <string.h>
+
+/* This is here for grpc_is_binary_header
+ * TODO(murgatroid99): Remove this
+ */
+#include <grpc/grpc.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_table.h"
+#include "src/core/ext/transport/chttp2/transport/varint.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/validate_metadata.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/timeout_encoding.h"
+
+namespace {
+/* (Maybe-cuckoo) hpack encoder hash table implementation.
+
+   This hashtable implementation is a subset of a proper cuckoo hash; while we
+   have fallback cells that a value can be hashed to if the first cell is full,
+   we do not attempt to iteratively rearrange entries into backup cells to get
+   things to fit. Instead, if both a cell and the backup cell for a value are
+   occupied, the older existing entry is evicted.
+
+   Note that we can disable backup-cell picking by setting
+   GRPC_HPACK_ENCODER_USE_CUCKOO_HASH to 0. In that case, we simply evict an
+   existing entry rather than try to use a backup. Hence, "maybe-cuckoo."
+   TODO(arjunroy): Add unit tests for hashtable implementation. */
+#define GRPC_HPACK_ENCODER_USE_CUCKOO_HASH 1
+#define HASH_FRAGMENT_MASK (GRPC_CHTTP2_HPACKC_NUM_VALUES - 1)
+#define HASH_FRAGMENT_1(x) ((x)&HASH_FRAGMENT_MASK)
+#define HASH_FRAGMENT_2(x) \
+  (((x) >> GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS) & HASH_FRAGMENT_MASK)
+#define HASH_FRAGMENT_3(x) \
+  (((x) >> (GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS * 2)) & HASH_FRAGMENT_MASK)
+#define HASH_FRAGMENT_4(x) \
+  (((x) >> (GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS * 3)) & HASH_FRAGMENT_MASK)
+
+/* don't consider adding anything bigger than this to the hpack table */
+constexpr size_t kMaxDecoderSpaceUsage = 512;
+constexpr size_t kDataFrameHeaderSize = 9;
+constexpr uint8_t kMaxFilterValue = 255;
+
+/* if the probability of this item being seen again is < 1/x then don't add
+   it to the table */
+#define ONE_ON_ADD_PROBABILITY (GRPC_CHTTP2_HPACKC_NUM_VALUES >> 1)
+/* The hpack index we encode over the wire. Meaningful to the hpack encoder and
+   parser on the remote end as well as HTTP2. *Not* the same as
+   HpackEncoderSlotHash, which is only meaningful to the hpack encoder
+   implementation (HpackEncoderSlotHash is used for the hashtable implementation
+   when mapping from metadata to HpackEncoderIndex. */
+typedef uint32_t HpackEncoderIndex;
+/* Internal-table bookkeeping (*not* the hpack index). */
+typedef uint32_t HpackEncoderSlotHash;
+
+struct SliceRefComparator {
+  typedef grpc_slice_refcount* Type;
+  static grpc_slice_refcount* Null() { return nullptr; }
+  static bool IsNull(const grpc_slice_refcount* sref) {
+    return sref == nullptr;
+  }
+  static bool Equals(const grpc_slice_refcount* s1,
+                     const grpc_slice_refcount* s2) {
+    return s1 == s2;
+  }
+  static void Ref(grpc_slice_refcount* sref) {
+    GPR_DEBUG_ASSERT(sref != nullptr);
+    sref->Ref();
+  }
+  static void Unref(grpc_slice_refcount* sref) {
+    GPR_DEBUG_ASSERT(sref != nullptr);
+    sref->Unref();
+  }
+};
+
+struct MetadataComparator {
+  typedef grpc_mdelem Type;
+  static const grpc_mdelem Null() { return {0}; }
+  static bool IsNull(const grpc_mdelem md) { return md.payload == 0; }
+  static bool Equals(const grpc_mdelem md1, const grpc_mdelem md2) {
+    return md1.payload == md2.payload;
+  }
+  static void Ref(grpc_mdelem md) {
+    GPR_DEBUG_ASSERT(md.payload != 0);
+    GRPC_MDELEM_REF(md);
+  }
+  static void Unref(grpc_mdelem md) {
+    GPR_DEBUG_ASSERT(md.payload != 0);
+    GRPC_MDELEM_UNREF(md);
+  }
+};
+
+/* Index table management */
+template <typename Hashtable>
+static HpackEncoderIndex HpackIndex(const Hashtable* hashtable,
+                                    HpackEncoderSlotHash hash_index) {
+  return hashtable[hash_index].index;
+}
+
+template <typename ValueType, typename Hashtable>
+static const ValueType& GetEntry(const Hashtable* hashtable,
+                                 HpackEncoderSlotHash hash_index) {
+  return hashtable[hash_index].value;
+}
+
+template <typename Cmp, typename Hashtable>
+static bool TableEmptyAt(const Hashtable* hashtable,
+                         HpackEncoderSlotHash hash_index) {
+  return Cmp::Equals(hashtable[hash_index].value, Cmp::Null());
+}
+
+template <typename Cmp, typename Hashtable, typename ValueType>
+static bool Matches(const Hashtable* hashtable, const ValueType& value,
+                    HpackEncoderSlotHash hash_index) {
+  return Cmp::Equals(value, hashtable[hash_index].value);
+}
+
+template <typename Hashtable>
+static void UpdateIndex(Hashtable* hashtable, HpackEncoderSlotHash hash_index,
+                        HpackEncoderIndex hpack_index) {
+  hashtable[hash_index].index = hpack_index;
+}
+
+template <typename Hashtable, typename ValueType>
+static void SetIndex(Hashtable* hashtable, HpackEncoderSlotHash hash_index,
+                     const ValueType& value, HpackEncoderIndex hpack_index) {
+  hashtable[hash_index].value = value;
+  UpdateIndex(hashtable, hash_index, hpack_index);
+}
+
+template <typename Cmp, typename Hashtable, typename ValueType>
+static bool GetMatchingIndex(Hashtable* hashtable, const ValueType& value,
+                             uint32_t value_hash, HpackEncoderIndex* index) {
+  const HpackEncoderSlotHash cuckoo_first = HASH_FRAGMENT_2(value_hash);
+  if (Matches<Cmp>(hashtable, value, cuckoo_first)) {
+    *index = HpackIndex(hashtable, cuckoo_first);
+    return true;
+  }
+#if GRPC_HPACK_ENCODER_USE_CUCKOO_HASH
+  const HpackEncoderSlotHash cuckoo_second = HASH_FRAGMENT_3(value_hash);
+
+  if (Matches<Cmp>(hashtable, value, cuckoo_second)) {
+    *index = HpackIndex(hashtable, cuckoo_second);
+    return true;
+  }
+#endif
+  return false;
+}
+
+template <typename Cmp, typename Hashtable, typename ValueType>
+static ValueType ReplaceOlderIndex(Hashtable* hashtable, const ValueType& value,
+                                   HpackEncoderSlotHash hash_index_a,
+                                   HpackEncoderSlotHash hash_index_b,
+                                   HpackEncoderIndex new_index) {
+  const HpackEncoderIndex hpack_idx_a = hashtable[hash_index_a].index;
+  const HpackEncoderIndex hpack_idx_b = hashtable[hash_index_b].index;
+  const HpackEncoderSlotHash id =
+      hpack_idx_a < hpack_idx_b ? hash_index_a : hash_index_b;
+  ValueType old = GetEntry<typename Cmp::Type>(hashtable, id);
+  SetIndex(hashtable, id, value, new_index);
+  return old;
+}
+
+template <typename Cmp, typename Hashtable, typename ValueType>
+static void UpdateAddOrEvict(Hashtable hashtable, const ValueType& value,
+                             uint32_t value_hash, HpackEncoderIndex new_index) {
+  const HpackEncoderSlotHash cuckoo_first = HASH_FRAGMENT_2(value_hash);
+  if (Matches<Cmp>(hashtable, value, cuckoo_first)) {
+    UpdateIndex(hashtable, cuckoo_first, new_index);
+    return;
+  }
+  if (TableEmptyAt<Cmp>(hashtable, cuckoo_first)) {
+    Cmp::Ref(value);
+    SetIndex(hashtable, cuckoo_first, value, new_index);
+    return;
+  }
+#if GRPC_HPACK_ENCODER_USE_CUCKOO_HASH
+  const HpackEncoderSlotHash cuckoo_second = HASH_FRAGMENT_3(value_hash);
+  if (Matches<Cmp>(hashtable, value, cuckoo_second)) {
+    UpdateIndex(hashtable, cuckoo_second, new_index);
+    return;
+  }
+  Cmp::Ref(value);
+  if (TableEmptyAt<Cmp>(hashtable, cuckoo_second)) {
+    SetIndex(hashtable, cuckoo_second, value, new_index);
+    return;
+  }
+  Cmp::Unref(ReplaceOlderIndex<Cmp>(hashtable, value, cuckoo_first,
+                                    cuckoo_second, new_index));
+#else
+  ValueType old = GetEntry<typename Cmp::Type>(hashtable, cuckoo_first);
+  SetIndex(hashtable, cuckoo_first, value, new_index);
+  Cmp::Unref(old);
+#endif
+}
+
+/* halve all counts because an element reached max */
+static void HalveFilter(uint8_t /*idx*/, uint32_t* sum, uint8_t* elems) {
+  *sum = 0;
+  for (int i = 0; i < GRPC_CHTTP2_HPACKC_NUM_VALUES; i++) {
+    elems[i] /= 2;
+    (*sum) += elems[i];
+  }
+}
+
+/* increment a filter count, halve all counts if one element reaches max */
+static void IncrementFilter(uint8_t idx, uint32_t* sum, uint8_t* elems) {
+  elems[idx]++;
+  if (GPR_LIKELY(elems[idx] < kMaxFilterValue)) {
+    (*sum)++;
+  } else {
+    HalveFilter(idx, sum, elems);
+  }
+}
+
+static uint32_t UpdateHashtablePopularity(
+    grpc_chttp2_hpack_compressor* hpack_compressor, uint32_t elem_hash) {
+  const uint32_t popularity_hash = HASH_FRAGMENT_1(elem_hash);
+  IncrementFilter(popularity_hash, &hpack_compressor->filter_elems_sum,
+                  hpack_compressor->filter_elems);
+  return popularity_hash;
+}
+
+static bool CanAddToHashtable(grpc_chttp2_hpack_compressor* hpack_compressor,
+                              uint32_t popularity_hash) {
+  const bool can_add =
+      hpack_compressor->filter_elems[popularity_hash] >=
+      hpack_compressor->filter_elems_sum / ONE_ON_ADD_PROBABILITY;
+  return can_add;
+}
+} /* namespace */
+
+typedef struct {
+  int is_first_frame;
+  /* number of bytes in 'output' when we started the frame - used to calculate
+     frame length */
+  size_t output_length_at_start_of_frame;
+  /* index (in output) of the header for the current frame */
+  size_t header_idx;
+#ifndef NDEBUG
+  /* have we seen a regular (non-colon-prefixed) header yet? */
+  uint8_t seen_regular_header;
+#endif
+  /* output stream id */
+  uint32_t stream_id;
+  grpc_slice_buffer* output;
+  grpc_transport_one_way_stats* stats;
+  /* maximum size of a frame */
+  size_t max_frame_size;
+  bool use_true_binary_metadata;
+} framer_state;
+
+/* fills p (which is expected to be kDataFrameHeaderSize bytes long)
+ * with a data frame header */
+static void fill_header(uint8_t* p, uint8_t type, uint32_t id, size_t len,
+                        uint8_t flags) {
+  /* len is the current frame size (i.e. for the frame we're finishing).
+     We finish a frame if:
+     1) We called ensure_space(), (i.e. add_tiny_header_data()) and adding
+        'need_bytes' to the frame would cause us to exceed st->max_frame_size.
+     2) We called add_header_data, and adding the slice would cause us to exceed
+        st->max_frame_size.
+     3) We're done encoding the header.
+
+     Thus, len is always <= st->max_frame_size.
+     st->max_frame_size is derived from GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE,
+     which has a max allowable value of 16777215 (see chttp_transport.cc).
+     Thus, the following assert can be a debug assert. */
+  GPR_DEBUG_ASSERT(len < 16777316);
+  *p++ = static_cast<uint8_t>(len >> 16);
+  *p++ = static_cast<uint8_t>(len >> 8);
+  *p++ = static_cast<uint8_t>(len);
+  *p++ = type;
+  *p++ = flags;
+  *p++ = static_cast<uint8_t>(id >> 24);
+  *p++ = static_cast<uint8_t>(id >> 16);
+  *p++ = static_cast<uint8_t>(id >> 8);
+  *p++ = static_cast<uint8_t>(id);
+}
+
+static size_t current_frame_size(framer_state* st) {
+  const size_t frame_size =
+      st->output->length - st->output_length_at_start_of_frame;
+  GPR_DEBUG_ASSERT(frame_size <= st->max_frame_size);
+  return frame_size;
+}
+
+/* finish a frame - fill in the previously reserved header */
+static void finish_frame(framer_state* st, int is_header_boundary,
+                         int is_last_in_stream) {
+  uint8_t type = 0xff;
+  type = st->is_first_frame ? GRPC_CHTTP2_FRAME_HEADER
+                            : GRPC_CHTTP2_FRAME_CONTINUATION;
+  fill_header(
+      GRPC_SLICE_START_PTR(st->output->slices[st->header_idx]), type,
+      st->stream_id, current_frame_size(st),
+      static_cast<uint8_t>(
+          (is_last_in_stream ? GRPC_CHTTP2_DATA_FLAG_END_STREAM : 0) |
+          (is_header_boundary ? GRPC_CHTTP2_DATA_FLAG_END_HEADERS : 0)));
+  st->stats->framing_bytes += kDataFrameHeaderSize;
+  st->is_first_frame = 0;
+}
+
+/* begin a new frame: reserve off header space, remember how many bytes we'd
+   output before beginning */
+static void begin_frame(framer_state* st) {
+  grpc_slice reserved;
+  reserved.refcount = nullptr;
+  reserved.data.inlined.length = kDataFrameHeaderSize;
+  st->header_idx = grpc_slice_buffer_add_indexed(st->output, reserved);
+  st->output_length_at_start_of_frame = st->output->length;
+}
+
+/* make sure that the current frame is of the type desired, and has sufficient
+   space to add at least about_to_add bytes -- finishes the current frame if
+   needed */
+static void ensure_space(framer_state* st, size_t need_bytes) {
+  if (GPR_LIKELY(current_frame_size(st) + need_bytes <= st->max_frame_size)) {
+    return;
+  }
+  finish_frame(st, 0, 0);
+  begin_frame(st);
+}
+
+static void add_header_data(framer_state* st, grpc_slice slice) {
+  size_t len = GRPC_SLICE_LENGTH(slice);
+  size_t remaining;
+  if (len == 0) return;
+  remaining = st->max_frame_size - current_frame_size(st);
+  if (len <= remaining) {
+    st->stats->header_bytes += len;
+    grpc_slice_buffer_add(st->output, slice);
+  } else {
+    st->stats->header_bytes += remaining;
+    grpc_slice_buffer_add(st->output, grpc_slice_split_head(&slice, remaining));
+    finish_frame(st, 0, 0);
+    begin_frame(st);
+    add_header_data(st, slice);
+  }
+}
+
+static uint8_t* add_tiny_header_data(framer_state* st, size_t len) {
+  ensure_space(st, len);
+  st->stats->header_bytes += len;
+  return grpc_slice_buffer_tiny_add(st->output, len);
+}
+
+static void evict_entry(grpc_chttp2_hpack_compressor* c) {
+  c->tail_remote_index++;
+  GPR_ASSERT(c->tail_remote_index > 0);
+  GPR_ASSERT(c->table_size >=
+             c->table_elem_size[c->tail_remote_index % c->cap_table_elems]);
+  GPR_ASSERT(c->table_elems > 0);
+  c->table_size = static_cast<uint16_t>(
+      c->table_size -
+      c->table_elem_size[c->tail_remote_index % c->cap_table_elems]);
+  c->table_elems--;
+}
+
+// Reserve space in table for the new element, evict entries if needed.
+// Return the new index of the element. Return 0 to indicate not adding to
+// table.
+static uint32_t prepare_space_for_new_elem(grpc_chttp2_hpack_compressor* c,
+                                           size_t elem_size) {
+  uint32_t new_index = c->tail_remote_index + c->table_elems + 1;
+  GPR_DEBUG_ASSERT(elem_size < 65536);
+
+  // TODO(arjunroy): Re-examine semantics
+  if (elem_size > c->max_table_size) {
+    while (c->table_size > 0) {
+      evict_entry(c);
+    }
+    return 0;
+  }
+
+  /* Reserve space for this element in the remote table: if this overflows
+     the current table, drop elements until it fits, matching the decompressor
+     algorithm */
+  while (c->table_size + elem_size > c->max_table_size) {
+    evict_entry(c);
+  }
+  GPR_ASSERT(c->table_elems < c->max_table_size);
+  c->table_elem_size[new_index % c->cap_table_elems] =
+      static_cast<uint16_t>(elem_size);
+  c->table_size = static_cast<uint16_t>(c->table_size + elem_size);
+  c->table_elems++;
+
+  return new_index;
+}
+
+// Add a key to the dynamic table. Both key and value will be added to table at
+// the decoder.
+static void AddKeyWithIndex(grpc_chttp2_hpack_compressor* c,
+                            grpc_slice_refcount* key_ref, uint32_t new_index,
+                            uint32_t key_hash) {
+  UpdateAddOrEvict<SliceRefComparator>(c->key_table.entries, key_ref, key_hash,
+                                       new_index);
+}
+
+/* add an element to the decoder table */
+static void AddElemWithIndex(grpc_chttp2_hpack_compressor* c, grpc_mdelem elem,
+                             uint32_t new_index, uint32_t elem_hash,
+                             uint32_t key_hash) {
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(elem));
+  UpdateAddOrEvict<MetadataComparator>(c->elem_table.entries, elem, elem_hash,
+                                       new_index);
+  AddKeyWithIndex(c, GRPC_MDKEY(elem).refcount, new_index, key_hash);
+}
+
+static void add_elem(grpc_chttp2_hpack_compressor* c, grpc_mdelem elem,
+                     size_t elem_size, uint32_t elem_hash, uint32_t key_hash) {
+  uint32_t new_index = prepare_space_for_new_elem(c, elem_size);
+  if (new_index != 0) {
+    AddElemWithIndex(c, elem, new_index, elem_hash, key_hash);
+  }
+}
+
+static void add_key(grpc_chttp2_hpack_compressor* c, grpc_mdelem elem,
+                    size_t elem_size, uint32_t key_hash) {
+  uint32_t new_index = prepare_space_for_new_elem(c, elem_size);
+  if (new_index != 0) {
+    AddKeyWithIndex(c, GRPC_MDKEY(elem).refcount, new_index, key_hash);
+  }
+}
+
+static void emit_indexed(grpc_chttp2_hpack_compressor* /*c*/,
+                         uint32_t elem_index, framer_state* st) {
+  GRPC_STATS_INC_HPACK_SEND_INDEXED();
+  uint32_t len = GRPC_CHTTP2_VARINT_LENGTH(elem_index, 1);
+  GRPC_CHTTP2_WRITE_VARINT(elem_index, 1, 0x80, add_tiny_header_data(st, len),
+                           len);
+}
+
+struct wire_value {
+  wire_value(uint8_t huffman_prefix, bool insert_null_before_wire_value,
+             const grpc_slice& slice)
+      : data(slice),
+        huffman_prefix(huffman_prefix),
+        insert_null_before_wire_value(insert_null_before_wire_value),
+        length(GRPC_SLICE_LENGTH(slice) +
+               (insert_null_before_wire_value ? 1 : 0)) {}
+  // While wire_value is const from the POV of hpack encoder code, actually
+  // adding it to a slice buffer will possibly split the slice.
+  const grpc_slice data;
+  const uint8_t huffman_prefix;
+  const bool insert_null_before_wire_value;
+  const size_t length;
+};
+
+template <bool mdkey_definitely_interned>
+static wire_value get_wire_value(grpc_mdelem elem, bool true_binary_enabled) {
+  const bool is_bin_hdr =
+      mdkey_definitely_interned
+          ? grpc_is_refcounted_slice_binary_header(GRPC_MDKEY(elem))
+          : grpc_is_binary_header_internal(GRPC_MDKEY(elem));
+  const grpc_slice& value = GRPC_MDVALUE(elem);
+  if (is_bin_hdr) {
+    if (true_binary_enabled) {
+      GRPC_STATS_INC_HPACK_SEND_BINARY();
+      return wire_value(0x00, true, grpc_slice_ref_internal(value));
+    } else {
+      GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64();
+      return wire_value(0x80, false,
+                        grpc_chttp2_base64_encode_and_huffman_compress(value));
+    }
+  } else {
+    /* TODO(ctiller): opportunistically compress non-binary headers */
+    GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED();
+    return wire_value(0x00, false, grpc_slice_ref_internal(value));
+  }
+}
+
+static uint32_t wire_value_length(const wire_value& v) {
+  GPR_DEBUG_ASSERT(v.length <= UINT32_MAX);
+  return static_cast<uint32_t>(v.length);
+}
+
+namespace {
+enum class EmitLitHdrType { INC_IDX, NO_IDX };
+
+enum class EmitLitHdrVType { INC_IDX_V, NO_IDX_V };
+}  // namespace
+
+template <EmitLitHdrType type>
+static void emit_lithdr(grpc_chttp2_hpack_compressor* /*c*/, uint32_t key_index,
+                        grpc_mdelem elem, framer_state* st) {
+  switch (type) {
+    case EmitLitHdrType::INC_IDX:
+      GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX();
+      break;
+    case EmitLitHdrType::NO_IDX:
+      GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX();
+      break;
+  }
+  const uint32_t len_pfx = type == EmitLitHdrType::INC_IDX
+                               ? GRPC_CHTTP2_VARINT_LENGTH(key_index, 2)
+                               : GRPC_CHTTP2_VARINT_LENGTH(key_index, 4);
+  const wire_value value =
+      get_wire_value<true>(elem, st->use_true_binary_metadata);
+  const uint32_t len_val = wire_value_length(value);
+  const uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
+  GPR_DEBUG_ASSERT(len_pfx + len_val_len < GRPC_SLICE_INLINED_SIZE);
+  uint8_t* data = add_tiny_header_data(
+      st,
+      len_pfx + len_val_len + (value.insert_null_before_wire_value ? 1 : 0));
+  switch (type) {
+    case EmitLitHdrType::INC_IDX:
+      GRPC_CHTTP2_WRITE_VARINT(key_index, 2, 0x40, data, len_pfx);
+      break;
+    case EmitLitHdrType::NO_IDX:
+      GRPC_CHTTP2_WRITE_VARINT(key_index, 4, 0x00, data, len_pfx);
+      break;
+  }
+  GRPC_CHTTP2_WRITE_VARINT(len_val, 1, value.huffman_prefix, &data[len_pfx],
+                           len_val_len);
+  if (value.insert_null_before_wire_value) {
+    data[len_pfx + len_val_len] = 0;
+  }
+  add_header_data(st, value.data);
+}
+
+template <EmitLitHdrVType type>
+static void emit_lithdr_v(grpc_chttp2_hpack_compressor* /*c*/, grpc_mdelem elem,
+                          framer_state* st) {
+  switch (type) {
+    case EmitLitHdrVType::INC_IDX_V:
+      GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V();
+      break;
+    case EmitLitHdrVType::NO_IDX_V:
+      GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V();
+      break;
+  }
+  GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED();
+  const uint32_t len_key =
+      static_cast<uint32_t>(GRPC_SLICE_LENGTH(GRPC_MDKEY(elem)));
+  const wire_value value =
+      type == EmitLitHdrVType::INC_IDX_V
+          ? get_wire_value<true>(elem, st->use_true_binary_metadata)
+          : get_wire_value<false>(elem, st->use_true_binary_metadata);
+  const uint32_t len_val = wire_value_length(value);
+  const uint32_t len_key_len = GRPC_CHTTP2_VARINT_LENGTH(len_key, 1);
+  const uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
+  GPR_DEBUG_ASSERT(len_key <= UINT32_MAX);
+  GPR_DEBUG_ASSERT(1 + len_key_len < GRPC_SLICE_INLINED_SIZE);
+  uint8_t* key_buf = add_tiny_header_data(st, 1 + len_key_len);
+  key_buf[0] = type == EmitLitHdrVType::INC_IDX_V ? 0x40 : 0x00;
+  GRPC_CHTTP2_WRITE_VARINT(len_key, 1, 0x00, &key_buf[1], len_key_len);
+  add_header_data(st, grpc_slice_ref_internal(GRPC_MDKEY(elem)));
+  uint8_t* value_buf = add_tiny_header_data(
+      st, len_val_len + (value.insert_null_before_wire_value ? 1 : 0));
+  GRPC_CHTTP2_WRITE_VARINT(len_val, 1, value.huffman_prefix, value_buf,
+                           len_val_len);
+  if (value.insert_null_before_wire_value) {
+    value_buf[len_val_len] = 0;
+  }
+  add_header_data(st, value.data);
+}
+
+static void emit_advertise_table_size_change(grpc_chttp2_hpack_compressor* c,
+                                             framer_state* st) {
+  uint32_t len = GRPC_CHTTP2_VARINT_LENGTH(c->max_table_size, 3);
+  GRPC_CHTTP2_WRITE_VARINT(c->max_table_size, 3, 0x20,
+                           add_tiny_header_data(st, len), len);
+  c->advertise_table_size_change = 0;
+}
+
+static void GPR_ATTRIBUTE_NOINLINE hpack_enc_log(grpc_mdelem elem) {
+  char* k = grpc_slice_to_c_string(GRPC_MDKEY(elem));
+  char* v = nullptr;
+  if (grpc_is_binary_header_internal(GRPC_MDKEY(elem))) {
+    v = grpc_dump_slice(GRPC_MDVALUE(elem), GPR_DUMP_HEX);
+  } else {
+    v = grpc_slice_to_c_string(GRPC_MDVALUE(elem));
+  }
+  gpr_log(
+      GPR_INFO,
+      "Encode: '%s: %s', elem_interned=%d [%d], k_interned=%d, v_interned=%d",
+      k, v, GRPC_MDELEM_IS_INTERNED(elem), GRPC_MDELEM_STORAGE(elem),
+      grpc_slice_is_interned(GRPC_MDKEY(elem)),
+      grpc_slice_is_interned(GRPC_MDVALUE(elem)));
+  gpr_free(k);
+  gpr_free(v);
+}
+
+static uint32_t dynidx(grpc_chttp2_hpack_compressor* c, uint32_t elem_index) {
+  return 1 + GRPC_CHTTP2_LAST_STATIC_ENTRY + c->tail_remote_index +
+         c->table_elems - elem_index;
+}
+
+struct EmitIndexedStatus {
+  EmitIndexedStatus() = default;
+  EmitIndexedStatus(uint32_t elem_hash, bool emitted, bool can_add)
+      : elem_hash(elem_hash), emitted(emitted), can_add(can_add) {}
+  const uint32_t elem_hash = 0;
+  const bool emitted = false;
+  const bool can_add = false;
+};
+
+static EmitIndexedStatus maybe_emit_indexed(grpc_chttp2_hpack_compressor* c,
+                                            grpc_mdelem elem,
+                                            framer_state* st) {
+  const uint32_t elem_hash =
+      GRPC_MDELEM_STORAGE(elem) == GRPC_MDELEM_STORAGE_INTERNED
+          ? reinterpret_cast<grpc_core::InternedMetadata*>(
+                GRPC_MDELEM_DATA(elem))
+                ->hash()
+          : reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(elem))
+                ->hash();
+  /* Update filter to see if we can perhaps add this elem. */
+  const uint32_t popularity_hash = UpdateHashtablePopularity(c, elem_hash);
+  /* is this elem currently in the decoders table? */
+  HpackEncoderIndex indices_key;
+  if (GetMatchingIndex<MetadataComparator>(c->elem_table.entries, elem,
+                                           elem_hash, &indices_key) &&
+      indices_key > c->tail_remote_index) {
+    emit_indexed(c, dynidx(c, indices_key), st);
+    return EmitIndexedStatus(elem_hash, true, false);
+  }
+  /* Didn't hit either cuckoo index, so no emit. */
+  return EmitIndexedStatus(elem_hash, false,
+                           CanAddToHashtable(c, popularity_hash));
+}
+
+static void emit_maybe_add(grpc_chttp2_hpack_compressor* c, grpc_mdelem elem,
+                           framer_state* st, uint32_t indices_key,
+                           bool should_add_elem, size_t decoder_space_usage,
+                           uint32_t elem_hash, uint32_t key_hash) {
+  if (should_add_elem) {
+    emit_lithdr<EmitLitHdrType::INC_IDX>(c, dynidx(c, indices_key), elem, st);
+    add_elem(c, elem, decoder_space_usage, elem_hash, key_hash);
+  } else {
+    emit_lithdr<EmitLitHdrType::NO_IDX>(c, dynidx(c, indices_key), elem, st);
+  }
+}
+
+/* encode an mdelem */
+static void hpack_enc(grpc_chttp2_hpack_compressor* c, grpc_mdelem elem,
+                      framer_state* st) {
+  const grpc_slice& elem_key = GRPC_MDKEY(elem);
+  /* User-provided key len validated in grpc_validate_header_key_is_legal(). */
+  GPR_DEBUG_ASSERT(GRPC_SLICE_LENGTH(elem_key) > 0);
+  /* Header ordering: all reserved headers (prefixed with ':') must precede
+   * regular headers. This can be a debug assert, since:
+   * 1) User cannot give us ':' headers (grpc_validate_header_key_is_legal()).
+   * 2) grpc filters/core should be checked during debug builds. */
+#ifndef NDEBUG
+  if (GRPC_SLICE_START_PTR(elem_key)[0] != ':') { /* regular header */
+    st->seen_regular_header = 1;
+  } else {
+    GPR_DEBUG_ASSERT(
+        st->seen_regular_header == 0 &&
+        "Reserved header (colon-prefixed) happening after regular ones.");
+  }
+#endif
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    hpack_enc_log(elem);
+  }
+  const bool elem_interned = GRPC_MDELEM_IS_INTERNED(elem);
+  const bool key_interned = elem_interned || grpc_slice_is_interned(elem_key);
+  /* Key is not interned, emit literals. */
+  if (!key_interned) {
+    emit_lithdr_v<EmitLitHdrVType::NO_IDX_V>(c, elem, st);
+    return;
+  }
+  /* Interned metadata => maybe already indexed. */
+  const EmitIndexedStatus ret =
+      elem_interned ? maybe_emit_indexed(c, elem, st) : EmitIndexedStatus();
+  if (ret.emitted) {
+    return;
+  }
+  /* should this elem be in the table? */
+  const size_t decoder_space_usage =
+      grpc_chttp2_get_size_in_hpack_table(elem, st->use_true_binary_metadata);
+  const bool decoder_space_available =
+      decoder_space_usage < kMaxDecoderSpaceUsage;
+  const bool should_add_elem =
+      elem_interned && decoder_space_available && ret.can_add;
+  const uint32_t elem_hash = ret.elem_hash;
+  /* no hits for the elem... maybe there's a key? */
+  const uint32_t key_hash = elem_key.refcount->Hash(elem_key);
+  HpackEncoderIndex indices_key;
+  if (GetMatchingIndex<SliceRefComparator>(
+          c->key_table.entries, elem_key.refcount, key_hash, &indices_key) &&
+      indices_key > c->tail_remote_index) {
+    emit_maybe_add(c, elem, st, indices_key, should_add_elem,
+                   decoder_space_usage, elem_hash, key_hash);
+    return;
+  }
+  /* no elem, key in the table... fall back to literal emission */
+  const bool should_add_key = !elem_interned && decoder_space_available;
+  if (should_add_elem || should_add_key) {
+    emit_lithdr_v<EmitLitHdrVType::INC_IDX_V>(c, elem, st);
+  } else {
+    emit_lithdr_v<EmitLitHdrVType::NO_IDX_V>(c, elem, st);
+  }
+  if (should_add_elem) {
+    add_elem(c, elem, decoder_space_usage, elem_hash, key_hash);
+  } else if (should_add_key) {
+    add_key(c, elem, decoder_space_usage, key_hash);
+  }
+}
+
+#define STRLEN_LIT(x) (sizeof(x) - 1)
+#define TIMEOUT_KEY "grpc-timeout"
+
+static void deadline_enc(grpc_chttp2_hpack_compressor* c, grpc_millis deadline,
+                         framer_state* st) {
+  char timeout_str[GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE];
+  grpc_mdelem mdelem;
+  grpc_http2_encode_timeout(deadline - grpc_core::ExecCtx::Get()->Now(),
+                            timeout_str);
+  mdelem = grpc_mdelem_from_slices(
+      GRPC_MDSTR_GRPC_TIMEOUT, grpc_core::UnmanagedMemorySlice(timeout_str));
+  hpack_enc(c, mdelem, st);
+  GRPC_MDELEM_UNREF(mdelem);
+}
+
+static uint32_t elems_for_bytes(uint32_t bytes) { return (bytes + 31) / 32; }
+
+void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor* c) {
+  memset(c, 0, sizeof(*c));
+  c->max_table_size = GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE;
+  c->cap_table_elems = elems_for_bytes(c->max_table_size);
+  c->max_table_elems = c->cap_table_elems;
+  c->max_usable_size = GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE;
+  const size_t alloc_size = sizeof(*c->table_elem_size) * c->cap_table_elems;
+  c->table_elem_size = static_cast<uint16_t*>(gpr_malloc(alloc_size));
+  memset(c->table_elem_size, 0, alloc_size);
+}
+
+void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor* c) {
+  for (int i = 0; i < GRPC_CHTTP2_HPACKC_NUM_VALUES; i++) {
+    auto* const key = GetEntry<grpc_slice_refcount*>(c->key_table.entries, i);
+    if (key != nullptr) {
+      key->Unref();
+    }
+    GRPC_MDELEM_UNREF(GetEntry<grpc_mdelem>(c->elem_table.entries, i));
+  }
+  gpr_free(c->table_elem_size);
+}
+
+void grpc_chttp2_hpack_compressor_set_max_usable_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size) {
+  c->max_usable_size = max_table_size;
+  grpc_chttp2_hpack_compressor_set_max_table_size(
+      c, GPR_MIN(c->max_table_size, max_table_size));
+}
+
+static void rebuild_elems(grpc_chttp2_hpack_compressor* c, uint32_t new_cap) {
+  uint16_t* table_elem_size =
+      static_cast<uint16_t*>(gpr_malloc(sizeof(*table_elem_size) * new_cap));
+  uint32_t i;
+
+  memset(table_elem_size, 0, sizeof(*table_elem_size) * new_cap);
+  GPR_ASSERT(c->table_elems <= new_cap);
+
+  for (i = 0; i < c->table_elems; i++) {
+    uint32_t ofs = c->tail_remote_index + i + 1;
+    table_elem_size[ofs % new_cap] =
+        c->table_elem_size[ofs % c->cap_table_elems];
+  }
+
+  c->cap_table_elems = new_cap;
+  gpr_free(c->table_elem_size);
+  c->table_elem_size = table_elem_size;
+}
+
+void grpc_chttp2_hpack_compressor_set_max_table_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size) {
+  max_table_size = GPR_MIN(max_table_size, c->max_usable_size);
+  if (max_table_size == c->max_table_size) {
+    return;
+  }
+  while (c->table_size > 0 && c->table_size > max_table_size) {
+    evict_entry(c);
+  }
+  c->max_table_size = max_table_size;
+  c->max_table_elems = elems_for_bytes(max_table_size);
+  if (c->max_table_elems > c->cap_table_elems) {
+    rebuild_elems(c, GPR_MAX(c->max_table_elems, 2 * c->cap_table_elems));
+  } else if (c->max_table_elems < c->cap_table_elems / 3) {
+    uint32_t new_cap = GPR_MAX(c->max_table_elems, 16);
+    if (new_cap != c->cap_table_elems) {
+      rebuild_elems(c, new_cap);
+    }
+  }
+  c->advertise_table_size_change = 1;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "set max table size from encoder to %d", max_table_size);
+  }
+}
+
+void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
+                               grpc_mdelem** extra_headers,
+                               size_t extra_headers_size,
+                               grpc_metadata_batch* metadata,
+                               const grpc_encode_header_options* options,
+                               grpc_slice_buffer* outbuf) {
+  /* grpc_chttp2_encode_header is called by FlushInitial/TrailingMetadata in
+     writing.cc. Specifically, on streams returned by NextStream(), which
+     returns streams from the list GRPC_CHTTP2_LIST_WRITABLE. The only way to be
+     added to the list is via  grpc_chttp2_list_add_writable_stream(), which
+     validates that stream_id is not 0. So, this can be a debug assert. */
+  GPR_DEBUG_ASSERT(options->stream_id != 0);
+  framer_state st;
+#ifndef NDEBUG
+  st.seen_regular_header = 0;
+#endif
+  st.stream_id = options->stream_id;
+  st.output = outbuf;
+  st.is_first_frame = 1;
+  st.stats = options->stats;
+  st.max_frame_size = options->max_frame_size;
+  st.use_true_binary_metadata = options->use_true_binary_metadata;
+
+  /* Encode a metadata batch; store the returned values, representing
+     a metadata element that needs to be unreffed back into the metadata
+     slot. THIS MAY NOT BE THE SAME ELEMENT (if a decoder table slot got
+     updated). After this loop, we'll do a batch unref of elements. */
+  begin_frame(&st);
+  if (c->advertise_table_size_change != 0) {
+    emit_advertise_table_size_change(c, &st);
+  }
+  for (size_t i = 0; i < extra_headers_size; ++i) {
+    grpc_mdelem md = *extra_headers[i];
+    const bool is_static =
+        GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_STATIC;
+    uintptr_t static_index;
+    if (is_static &&
+        (static_index =
+             reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(md))
+                 ->StaticIndex()) < GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+      emit_indexed(c, static_cast<uint32_t>(static_index + 1), &st);
+    } else {
+      hpack_enc(c, md, &st);
+    }
+  }
+  grpc_metadata_batch_assert_ok(metadata);
+  for (grpc_linked_mdelem* l = metadata->list.head; l; l = l->next) {
+    const bool is_static =
+        GRPC_MDELEM_STORAGE(l->md) == GRPC_MDELEM_STORAGE_STATIC;
+    uintptr_t static_index;
+    if (is_static &&
+        (static_index = reinterpret_cast<grpc_core::StaticMetadata*>(
+                            GRPC_MDELEM_DATA(l->md))
+                            ->StaticIndex()) < GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+      emit_indexed(c, static_cast<uint32_t>(static_index + 1), &st);
+    } else {
+      hpack_enc(c, l->md, &st);
+    }
+  }
+  grpc_millis deadline = metadata->deadline;
+  if (deadline != GRPC_MILLIS_INF_FUTURE) {
+    deadline_enc(c, deadline, &st);
+  }
+
+  finish_frame(&st, 1, options->is_eof);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.h
new file mode 100644
index 0000000..dc371fa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_encoder.h	
@@ -0,0 +1,108 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/transport.h"
+
+// This should be <= 8. We use 6 to save space.
+#define GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS 6
+#define GRPC_CHTTP2_HPACKC_NUM_VALUES (1 << GRPC_CHTTP2_HPACKC_NUM_VALUES_BITS)
+/* initial table size, per spec */
+#define GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE 4096
+/* maximum table size we'll actually use */
+#define GRPC_CHTTP2_HPACKC_MAX_TABLE_SIZE (1024 * 1024)
+
+extern grpc_core::TraceFlag grpc_http_trace;
+
+struct grpc_chttp2_hpack_compressor {
+  uint32_t max_table_size;
+  uint32_t max_table_elems;
+  uint32_t cap_table_elems;
+  /** maximum number of bytes we'll use for the decode table (to guard against
+      peers ooming us by setting decode table size high) */
+  uint32_t max_usable_size;
+  /* one before the lowest usable table index */
+  uint32_t tail_remote_index;
+  uint32_t table_size;
+  uint32_t table_elems;
+  uint16_t* table_elem_size;
+  /** if non-zero, advertise to the decoder that we'll start using a table
+      of this size */
+  uint8_t advertise_table_size_change;
+
+  /* filter tables for elems: this tables provides an approximate
+     popularity count for particular hashes, and are used to determine whether
+     a new literal should be added to the compression table or not.
+     They track a single integer that counts how often a particular value has
+     been seen. When that count reaches max (255), all values are halved. */
+  uint32_t filter_elems_sum;
+  uint8_t filter_elems[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+
+  /* entry tables for keys & elems: these tables track values that have been
+     seen and *may* be in the decompressor table */
+  struct {
+    struct {
+      grpc_mdelem value;
+      uint32_t index;
+    } entries[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+  } elem_table; /* Metadata table management */
+  struct {
+    struct {
+      /* Only store the slice refcount - we do not need the byte buffer or
+         length of the slice since we only need to store a mapping between the
+         identity of the slice and the corresponding HPACK index. Since the
+         slice *must* be static or interned, the refcount is sufficient to
+         establish identity. */
+      grpc_slice_refcount* value;
+      uint32_t index;
+    } entries[GRPC_CHTTP2_HPACKC_NUM_VALUES];
+  } key_table; /* Key table management */
+};
+
+void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor* c);
+void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor* c);
+void grpc_chttp2_hpack_compressor_set_max_table_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size);
+void grpc_chttp2_hpack_compressor_set_max_usable_size(
+    grpc_chttp2_hpack_compressor* c, uint32_t max_table_size);
+
+typedef struct {
+  uint32_t stream_id;
+  bool is_eof;
+  bool use_true_binary_metadata;
+  size_t max_frame_size;
+  grpc_transport_one_way_stats* stats;
+} grpc_encode_header_options;
+
+void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor* c,
+                               grpc_mdelem** extra_headers,
+                               size_t extra_headers_size,
+                               grpc_metadata_batch* metadata,
+                               const grpc_encode_header_options* options,
+                               grpc_slice_buffer* outbuf);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.cc
new file mode 100644
index 0000000..19f0216
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.cc	
@@ -0,0 +1,1761 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <assert.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/validate_metadata.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_chttp2_hpack_parser(
+    false, "chttp2_hpack_parser");
+
+typedef enum {
+  NOT_BINARY,
+  BINARY_BEGIN,
+  B64_BYTE0,
+  B64_BYTE1,
+  B64_BYTE2,
+  B64_BYTE3
+} binary_state;
+
+/* How parsing works:
+
+   The parser object keeps track of a function pointer which represents the
+   current parse state.
+
+   Each time new bytes are presented, we call into the current state, which
+   recursively parses until all bytes in the given chunk are exhausted.
+
+   The parse state that terminates then saves its function pointer to be the
+   current state so that it can resume when more bytes are available.
+
+   It's expected that most optimizing compilers will turn this code into
+   a set of indirect jumps, and so not waste stack space. */
+
+/* forward declarations for parsing states */
+static grpc_error* parse_begin(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                               const uint8_t* end);
+static grpc_error* parse_error(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                               const uint8_t* end, grpc_error* error);
+static grpc_error* still_parse_error(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_illegal_op(grpc_chttp2_hpack_parser* p,
+                                    const uint8_t* cur, const uint8_t* end);
+
+static grpc_error* parse_string_prefix(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_key_string(grpc_chttp2_hpack_parser* p,
+                                    const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_value_string_with_indexed_key(
+    grpc_chttp2_hpack_parser* p, const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_value_string_with_literal_key(
+    grpc_chttp2_hpack_parser* p, const uint8_t* cur, const uint8_t* end);
+
+static grpc_error* parse_value0(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end);
+static grpc_error* parse_value1(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end);
+static grpc_error* parse_value2(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end);
+static grpc_error* parse_value3(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end);
+static grpc_error* parse_value4(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end);
+static grpc_error* parse_value5up(grpc_chttp2_hpack_parser* p,
+                                  const uint8_t* cur, const uint8_t* end);
+
+static grpc_error* parse_indexed_field(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_indexed_field_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_incidx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_lithdr_incidx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_incidx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_notidx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_lithdr_notidx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_notidx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_nvridx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_lithdr_nvridx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_lithdr_nvridx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end);
+static grpc_error* parse_max_tbl_size(grpc_chttp2_hpack_parser* p,
+                                      const uint8_t* cur, const uint8_t* end);
+static grpc_error* parse_max_tbl_size_x(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur, const uint8_t* end);
+
+/* we translate the first byte of a hpack field into one of these decoding
+   cases, then use a lookup table to jump directly to the appropriate parser.
+
+   _X => the integer index is all ones, meaning we need to do varint decoding
+   _V => the integer index is all zeros, meaning we need to decode an additional
+         string value */
+typedef enum {
+  INDEXED_FIELD,
+  INDEXED_FIELD_X,
+  LITHDR_INCIDX,
+  LITHDR_INCIDX_X,
+  LITHDR_INCIDX_V,
+  LITHDR_NOTIDX,
+  LITHDR_NOTIDX_X,
+  LITHDR_NOTIDX_V,
+  LITHDR_NVRIDX,
+  LITHDR_NVRIDX_X,
+  LITHDR_NVRIDX_V,
+  MAX_TBL_SIZE,
+  MAX_TBL_SIZE_X,
+  ILLEGAL
+} first_byte_type;
+
+/* jump table of parse state functions -- order must match first_byte_type
+   above */
+static const grpc_chttp2_hpack_parser_state first_byte_action[] = {
+    parse_indexed_field,   parse_indexed_field_x, parse_lithdr_incidx,
+    parse_lithdr_incidx_x, parse_lithdr_incidx_v, parse_lithdr_notidx,
+    parse_lithdr_notidx_x, parse_lithdr_notidx_v, parse_lithdr_nvridx,
+    parse_lithdr_nvridx_x, parse_lithdr_nvridx_v, parse_max_tbl_size,
+    parse_max_tbl_size_x,  parse_illegal_op};
+
+/* indexes the first byte to a parse state function - generated by
+   gen_hpack_tables.c */
+static const uint8_t first_byte_lut[256] = {
+    LITHDR_NOTIDX_V, LITHDR_NOTIDX, LITHDR_NOTIDX, LITHDR_NOTIDX,
+    LITHDR_NOTIDX,   LITHDR_NOTIDX, LITHDR_NOTIDX, LITHDR_NOTIDX,
+    LITHDR_NOTIDX,   LITHDR_NOTIDX, LITHDR_NOTIDX, LITHDR_NOTIDX,
+    LITHDR_NOTIDX,   LITHDR_NOTIDX, LITHDR_NOTIDX, LITHDR_NOTIDX_X,
+    LITHDR_NVRIDX_V, LITHDR_NVRIDX, LITHDR_NVRIDX, LITHDR_NVRIDX,
+    LITHDR_NVRIDX,   LITHDR_NVRIDX, LITHDR_NVRIDX, LITHDR_NVRIDX,
+    LITHDR_NVRIDX,   LITHDR_NVRIDX, LITHDR_NVRIDX, LITHDR_NVRIDX,
+    LITHDR_NVRIDX,   LITHDR_NVRIDX, LITHDR_NVRIDX, LITHDR_NVRIDX_X,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE,
+    MAX_TBL_SIZE,    MAX_TBL_SIZE,  MAX_TBL_SIZE,  MAX_TBL_SIZE_X,
+    LITHDR_INCIDX_V, LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX,
+    LITHDR_INCIDX,   LITHDR_INCIDX, LITHDR_INCIDX, LITHDR_INCIDX_X,
+    ILLEGAL,         INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD,
+    INDEXED_FIELD,   INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD_X,
+};
+
+/* state table for huffman decoding: given a state, gives an index/16 into
+   next_sub_tbl. Taking that index and adding the value of the nibble being
+   considered returns the next state.
+
+   generated by gen_hpack_tables.c */
+static const uint8_t next_tbl[256] = {
+    0,  1,  2,  3,  4,  1,  2, 5,  6,  1, 7,  8,  1,  3,  3,  9,  10, 11, 1,  1,
+    1,  12, 1,  2,  13, 1,  1, 1,  1,  1, 1,  1,  1,  1,  1,  1,  1,  1,  1,  2,
+    14, 1,  15, 16, 1,  17, 1, 15, 2,  7, 3,  18, 19, 1,  1,  1,  1,  20, 1,  1,
+    1,  1,  1,  1,  1,  1,  1, 1,  15, 2, 2,  7,  21, 1,  22, 1,  1,  1,  1,  1,
+    1,  1,  1,  15, 2,  2,  2, 2,  2,  2, 23, 24, 25, 1,  1,  1,  1,  2,  2,  2,
+    26, 3,  3,  27, 10, 28, 1, 1,  1,  1, 1,  1,  2,  3,  29, 10, 30, 1,  1,  1,
+    1,  1,  1,  1,  1,  1,  1, 1,  1,  1, 1,  31, 1,  1,  1,  1,  1,  1,  1,  2,
+    2,  2,  2,  2,  2,  2,  2, 32, 1,  1, 15, 33, 1,  34, 35, 9,  36, 1,  1,  1,
+    1,  1,  1,  1,  37, 1,  1, 1,  1,  1, 1,  2,  2,  2,  2,  2,  2,  2,  26, 9,
+    38, 1,  1,  1,  1,  1,  1, 1,  15, 2, 2,  2,  2,  26, 3,  3,  39, 1,  1,  1,
+    1,  1,  1,  1,  1,  1,  1, 1,  2,  2, 2,  2,  2,  2,  7,  3,  3,  3,  40, 2,
+    41, 1,  1,  1,  42, 43, 1, 1,  44, 1, 1,  1,  1,  15, 2,  2,  2,  2,  2,  2,
+    3,  3,  3,  45, 46, 1,  1, 2,  2,  2, 35, 3,  3,  18, 47, 2,
+};
+
+/* next state, based upon current state and the current nibble: see above.
+   generated by gen_hpack_tables.c */
+static const int16_t next_sub_tbl[48 * 16] = {
+    1,   204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217,
+    218, 2,   6,   10,  13,  14,  15,  16,  17,  2,   6,   10,  13,  14,  15,
+    16,  17,  3,   7,   11,  24,  3,   7,   11,  24,  3,   7,   11,  24,  3,
+    7,   11,  24,  4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,
+    4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   5,
+    199, 200, 201, 202, 203, 4,   8,   4,   8,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   9,   133, 134, 135, 136, 137, 138, 139, 140,
+    141, 142, 143, 144, 145, 146, 147, 3,   7,   11,  24,  3,   7,   11,  24,
+    4,   8,   4,   8,   4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   12,  132, 4,   8,   4,   8,   4,   8,
+    4,   8,   4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,   18,  19,  20,  21,  4,   8,   4,
+    8,   4,   8,   4,   8,   4,   8,   0,   0,   0,   22,  23,  91,  25,  26,
+    27,  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  3,
+    7,   11,  24,  3,   7,   11,  24,  0,   0,   0,   0,   0,   41,  42,  43,
+    2,   6,   10,  13,  14,  15,  16,  17,  3,   7,   11,  24,  3,   7,   11,
+    24,  4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   0,   0,
+    44,  45,  2,   6,   10,  13,  14,  15,  16,  17,  46,  47,  48,  49,  50,
+    51,  52,  57,  4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   53,  54,  55,  56,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,
+    68,  69,  70,  71,  72,  74,  0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   73,  75,  76,  77,  78,  79,  80,  81,  82,
+    83,  84,  85,  86,  87,  88,  89,  90,  3,   7,   11,  24,  3,   7,   11,
+    24,  3,   7,   11,  24,  0,   0,   0,   0,   3,   7,   11,  24,  3,   7,
+    11,  24,  4,   8,   4,   8,   0,   0,   0,   92,  0,   0,   0,   93,  94,
+    95,  96,  97,  98,  99,  100, 101, 102, 103, 104, 105, 3,   7,   11,  24,
+    4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,
+    8,   4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   0,   106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 4,
+    8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   0,   0,
+    0,   117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130,
+    131, 2,   6,   10,  13,  14,  15,  16,  17,  4,   8,   4,   8,   4,   8,
+    4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   148,
+    149, 150, 151, 3,   7,   11,  24,  4,   8,   4,   8,   0,   0,   0,   0,
+    0,   0,   152, 153, 3,   7,   11,  24,  3,   7,   11,  24,  3,   7,   11,
+    24,  154, 155, 156, 164, 3,   7,   11,  24,  3,   7,   11,  24,  3,   7,
+    11,  24,  4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    157, 158, 159, 160, 161, 162, 163, 165, 166, 167, 168, 169, 170, 171, 172,
+    173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187,
+    188, 189, 190, 191, 192, 193, 194, 195, 196, 4,   8,   4,   8,   4,   8,
+    4,   8,   4,   8,   4,   8,   4,   8,   197, 198, 4,   8,   4,   8,   4,
+    8,   4,   8,   0,   0,   0,   0,   0,   0,   219, 220, 3,   7,   11,  24,
+    4,   8,   4,   8,   4,   8,   0,   0,   221, 222, 223, 224, 3,   7,   11,
+    24,  3,   7,   11,  24,  4,   8,   4,   8,   4,   8,   225, 228, 4,   8,
+    4,   8,   4,   8,   0,   0,   0,   0,   0,   0,   0,   0,   226, 227, 229,
+    230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244,
+    4,   8,   4,   8,   4,   8,   4,   8,   4,   8,   0,   0,   0,   0,   0,
+    0,   0,   0,   0,   0,   0,   0,   245, 246, 247, 248, 249, 250, 251, 252,
+    253, 254, 0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+    0,   0,   255,
+};
+
+/* emission table: indexed like next_tbl, ultimately gives the byte to be
+   emitted, or -1 for no byte, or 256 for end of stream
+
+   generated by gen_hpack_tables.c */
+static const uint16_t emit_tbl[256] = {
+    0,   1,   2,   3,   4,   5,   6,   7,   0,   8,   9,   10,  11,  12,  13,
+    14,  15,  16,  17,  18,  19,  20,  21,  22,  0,   23,  24,  25,  26,  27,
+    28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,
+    43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  0,   55,  56,
+    57,  58,  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,  0,
+    71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,  85,
+    86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,  99,  100,
+    101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115,
+    116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130,
+    131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145,
+    146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 0,
+    160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174,
+    0,   175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188,
+    189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203,
+    204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218,
+    219, 220, 221, 0,   222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232,
+    233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247,
+    248,
+};
+
+/* generated by gen_hpack_tables.c */
+static const int16_t emit_sub_tbl[249 * 16] = {
+    -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+    -1,  48,  48,  48,  48,  48,  48,  48,  48,  49,  49,  49,  49,  49,  49,
+    49,  49,  48,  48,  48,  48,  49,  49,  49,  49,  50,  50,  50,  50,  97,
+    97,  97,  97,  48,  48,  49,  49,  50,  50,  97,  97,  99,  99,  101, 101,
+    105, 105, 111, 111, 48,  49,  50,  97,  99,  101, 105, 111, 115, 116, -1,
+    -1,  -1,  -1,  -1,  -1,  32,  32,  32,  32,  32,  32,  32,  32,  37,  37,
+    37,  37,  37,  37,  37,  37,  99,  99,  99,  99,  101, 101, 101, 101, 105,
+    105, 105, 105, 111, 111, 111, 111, 115, 115, 116, 116, 32,  37,  45,  46,
+    47,  51,  52,  53,  54,  55,  56,  57,  61,  61,  61,  61,  61,  61,  61,
+    61,  65,  65,  65,  65,  65,  65,  65,  65,  115, 115, 115, 115, 116, 116,
+    116, 116, 32,  32,  37,  37,  45,  45,  46,  46,  61,  65,  95,  98,  100,
+    102, 103, 104, 108, 109, 110, 112, 114, 117, -1,  -1,  58,  58,  58,  58,
+    58,  58,  58,  58,  66,  66,  66,  66,  66,  66,  66,  66,  47,  47,  51,
+    51,  52,  52,  53,  53,  54,  54,  55,  55,  56,  56,  57,  57,  61,  61,
+    65,  65,  95,  95,  98,  98,  100, 100, 102, 102, 103, 103, 104, 104, 108,
+    108, 109, 109, 110, 110, 112, 112, 114, 114, 117, 117, 58,  66,  67,  68,
+    69,  70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,
+    84,  85,  86,  87,  89,  106, 107, 113, 118, 119, 120, 121, 122, -1,  -1,
+    -1,  -1,  38,  38,  38,  38,  38,  38,  38,  38,  42,  42,  42,  42,  42,
+    42,  42,  42,  44,  44,  44,  44,  44,  44,  44,  44,  59,  59,  59,  59,
+    59,  59,  59,  59,  88,  88,  88,  88,  88,  88,  88,  88,  90,  90,  90,
+    90,  90,  90,  90,  90,  33,  33,  34,  34,  40,  40,  41,  41,  63,  63,
+    39,  43,  124, -1,  -1,  -1,  35,  35,  35,  35,  35,  35,  35,  35,  62,
+    62,  62,  62,  62,  62,  62,  62,  0,   0,   0,   0,   36,  36,  36,  36,
+    64,  64,  64,  64,  91,  91,  91,  91,  69,  69,  69,  69,  69,  69,  69,
+    69,  70,  70,  70,  70,  70,  70,  70,  70,  71,  71,  71,  71,  71,  71,
+    71,  71,  72,  72,  72,  72,  72,  72,  72,  72,  73,  73,  73,  73,  73,
+    73,  73,  73,  74,  74,  74,  74,  74,  74,  74,  74,  75,  75,  75,  75,
+    75,  75,  75,  75,  76,  76,  76,  76,  76,  76,  76,  76,  77,  77,  77,
+    77,  77,  77,  77,  77,  78,  78,  78,  78,  78,  78,  78,  78,  79,  79,
+    79,  79,  79,  79,  79,  79,  80,  80,  80,  80,  80,  80,  80,  80,  81,
+    81,  81,  81,  81,  81,  81,  81,  82,  82,  82,  82,  82,  82,  82,  82,
+    83,  83,  83,  83,  83,  83,  83,  83,  84,  84,  84,  84,  84,  84,  84,
+    84,  85,  85,  85,  85,  85,  85,  85,  85,  86,  86,  86,  86,  86,  86,
+    86,  86,  87,  87,  87,  87,  87,  87,  87,  87,  89,  89,  89,  89,  89,
+    89,  89,  89,  106, 106, 106, 106, 106, 106, 106, 106, 107, 107, 107, 107,
+    107, 107, 107, 107, 113, 113, 113, 113, 113, 113, 113, 113, 118, 118, 118,
+    118, 118, 118, 118, 118, 119, 119, 119, 119, 119, 119, 119, 119, 120, 120,
+    120, 120, 120, 120, 120, 120, 121, 121, 121, 121, 121, 121, 121, 121, 122,
+    122, 122, 122, 122, 122, 122, 122, 38,  38,  38,  38,  42,  42,  42,  42,
+    44,  44,  44,  44,  59,  59,  59,  59,  88,  88,  88,  88,  90,  90,  90,
+    90,  33,  34,  40,  41,  63,  -1,  -1,  -1,  39,  39,  39,  39,  39,  39,
+    39,  39,  43,  43,  43,  43,  43,  43,  43,  43,  124, 124, 124, 124, 124,
+    124, 124, 124, 35,  35,  35,  35,  62,  62,  62,  62,  0,   0,   36,  36,
+    64,  64,  91,  91,  93,  93,  126, 126, 94,  125, -1,  -1,  60,  60,  60,
+    60,  60,  60,  60,  60,  96,  96,  96,  96,  96,  96,  96,  96,  123, 123,
+    123, 123, 123, 123, 123, 123, -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  92,
+    92,  92,  92,  92,  92,  92,  92,  195, 195, 195, 195, 195, 195, 195, 195,
+    208, 208, 208, 208, 208, 208, 208, 208, 128, 128, 128, 128, 130, 130, 130,
+    130, 131, 131, 131, 131, 162, 162, 162, 162, 184, 184, 184, 184, 194, 194,
+    194, 194, 224, 224, 224, 224, 226, 226, 226, 226, 153, 153, 161, 161, 167,
+    167, 172, 172, 176, 176, 177, 177, 179, 179, 209, 209, 216, 216, 217, 217,
+    227, 227, 229, 229, 230, 230, 129, 132, 133, 134, 136, 146, 154, 156, 160,
+    163, 164, 169, 170, 173, 178, 181, 185, 186, 187, 189, 190, 196, 198, 228,
+    232, 233, -1,  -1,  -1,  -1,  1,   1,   1,   1,   1,   1,   1,   1,   135,
+    135, 135, 135, 135, 135, 135, 135, 137, 137, 137, 137, 137, 137, 137, 137,
+    138, 138, 138, 138, 138, 138, 138, 138, 139, 139, 139, 139, 139, 139, 139,
+    139, 140, 140, 140, 140, 140, 140, 140, 140, 141, 141, 141, 141, 141, 141,
+    141, 141, 143, 143, 143, 143, 143, 143, 143, 143, 147, 147, 147, 147, 147,
+    147, 147, 147, 149, 149, 149, 149, 149, 149, 149, 149, 150, 150, 150, 150,
+    150, 150, 150, 150, 151, 151, 151, 151, 151, 151, 151, 151, 152, 152, 152,
+    152, 152, 152, 152, 152, 155, 155, 155, 155, 155, 155, 155, 155, 157, 157,
+    157, 157, 157, 157, 157, 157, 158, 158, 158, 158, 158, 158, 158, 158, 165,
+    165, 165, 165, 165, 165, 165, 165, 166, 166, 166, 166, 166, 166, 166, 166,
+    168, 168, 168, 168, 168, 168, 168, 168, 174, 174, 174, 174, 174, 174, 174,
+    174, 175, 175, 175, 175, 175, 175, 175, 175, 180, 180, 180, 180, 180, 180,
+    180, 180, 182, 182, 182, 182, 182, 182, 182, 182, 183, 183, 183, 183, 183,
+    183, 183, 183, 188, 188, 188, 188, 188, 188, 188, 188, 191, 191, 191, 191,
+    191, 191, 191, 191, 197, 197, 197, 197, 197, 197, 197, 197, 231, 231, 231,
+    231, 231, 231, 231, 231, 239, 239, 239, 239, 239, 239, 239, 239, 9,   9,
+    9,   9,   142, 142, 142, 142, 144, 144, 144, 144, 145, 145, 145, 145, 148,
+    148, 148, 148, 159, 159, 159, 159, 171, 171, 171, 171, 206, 206, 206, 206,
+    215, 215, 215, 215, 225, 225, 225, 225, 236, 236, 236, 236, 237, 237, 237,
+    237, 199, 199, 207, 207, 234, 234, 235, 235, 192, 193, 200, 201, 202, 205,
+    210, 213, 218, 219, 238, 240, 242, 243, 255, -1,  203, 203, 203, 203, 203,
+    203, 203, 203, 204, 204, 204, 204, 204, 204, 204, 204, 211, 211, 211, 211,
+    211, 211, 211, 211, 212, 212, 212, 212, 212, 212, 212, 212, 214, 214, 214,
+    214, 214, 214, 214, 214, 221, 221, 221, 221, 221, 221, 221, 221, 222, 222,
+    222, 222, 222, 222, 222, 222, 223, 223, 223, 223, 223, 223, 223, 223, 241,
+    241, 241, 241, 241, 241, 241, 241, 244, 244, 244, 244, 244, 244, 244, 244,
+    245, 245, 245, 245, 245, 245, 245, 245, 246, 246, 246, 246, 246, 246, 246,
+    246, 247, 247, 247, 247, 247, 247, 247, 247, 248, 248, 248, 248, 248, 248,
+    248, 248, 250, 250, 250, 250, 250, 250, 250, 250, 251, 251, 251, 251, 251,
+    251, 251, 251, 252, 252, 252, 252, 252, 252, 252, 252, 253, 253, 253, 253,
+    253, 253, 253, 253, 254, 254, 254, 254, 254, 254, 254, 254, 2,   2,   2,
+    2,   3,   3,   3,   3,   4,   4,   4,   4,   5,   5,   5,   5,   6,   6,
+    6,   6,   7,   7,   7,   7,   8,   8,   8,   8,   11,  11,  11,  11,  12,
+    12,  12,  12,  14,  14,  14,  14,  15,  15,  15,  15,  16,  16,  16,  16,
+    17,  17,  17,  17,  18,  18,  18,  18,  19,  19,  19,  19,  20,  20,  20,
+    20,  21,  21,  21,  21,  23,  23,  23,  23,  24,  24,  24,  24,  25,  25,
+    25,  25,  26,  26,  26,  26,  27,  27,  27,  27,  28,  28,  28,  28,  29,
+    29,  29,  29,  30,  30,  30,  30,  31,  31,  31,  31,  127, 127, 127, 127,
+    220, 220, 220, 220, 249, 249, 249, 249, 10,  13,  22,  256, 93,  93,  93,
+    93,  126, 126, 126, 126, 94,  94,  125, 125, 60,  96,  123, -1,  92,  195,
+    208, -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  128,
+    128, 128, 128, 128, 128, 128, 128, 130, 130, 130, 130, 130, 130, 130, 130,
+    131, 131, 131, 131, 131, 131, 131, 131, 162, 162, 162, 162, 162, 162, 162,
+    162, 184, 184, 184, 184, 184, 184, 184, 184, 194, 194, 194, 194, 194, 194,
+    194, 194, 224, 224, 224, 224, 224, 224, 224, 224, 226, 226, 226, 226, 226,
+    226, 226, 226, 153, 153, 153, 153, 161, 161, 161, 161, 167, 167, 167, 167,
+    172, 172, 172, 172, 176, 176, 176, 176, 177, 177, 177, 177, 179, 179, 179,
+    179, 209, 209, 209, 209, 216, 216, 216, 216, 217, 217, 217, 217, 227, 227,
+    227, 227, 229, 229, 229, 229, 230, 230, 230, 230, 129, 129, 132, 132, 133,
+    133, 134, 134, 136, 136, 146, 146, 154, 154, 156, 156, 160, 160, 163, 163,
+    164, 164, 169, 169, 170, 170, 173, 173, 178, 178, 181, 181, 185, 185, 186,
+    186, 187, 187, 189, 189, 190, 190, 196, 196, 198, 198, 228, 228, 232, 232,
+    233, 233, 1,   135, 137, 138, 139, 140, 141, 143, 147, 149, 150, 151, 152,
+    155, 157, 158, 165, 166, 168, 174, 175, 180, 182, 183, 188, 191, 197, 231,
+    239, -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  9,   9,   9,
+    9,   9,   9,   9,   9,   142, 142, 142, 142, 142, 142, 142, 142, 144, 144,
+    144, 144, 144, 144, 144, 144, 145, 145, 145, 145, 145, 145, 145, 145, 148,
+    148, 148, 148, 148, 148, 148, 148, 159, 159, 159, 159, 159, 159, 159, 159,
+    171, 171, 171, 171, 171, 171, 171, 171, 206, 206, 206, 206, 206, 206, 206,
+    206, 215, 215, 215, 215, 215, 215, 215, 215, 225, 225, 225, 225, 225, 225,
+    225, 225, 236, 236, 236, 236, 236, 236, 236, 236, 237, 237, 237, 237, 237,
+    237, 237, 237, 199, 199, 199, 199, 207, 207, 207, 207, 234, 234, 234, 234,
+    235, 235, 235, 235, 192, 192, 193, 193, 200, 200, 201, 201, 202, 202, 205,
+    205, 210, 210, 213, 213, 218, 218, 219, 219, 238, 238, 240, 240, 242, 242,
+    243, 243, 255, 255, 203, 204, 211, 212, 214, 221, 222, 223, 241, 244, 245,
+    246, 247, 248, 250, 251, 252, 253, 254, -1,  -1,  -1,  -1,  -1,  -1,  -1,
+    -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  2,   2,   2,   2,   2,   2,   2,
+    2,   3,   3,   3,   3,   3,   3,   3,   3,   4,   4,   4,   4,   4,   4,
+    4,   4,   5,   5,   5,   5,   5,   5,   5,   5,   6,   6,   6,   6,   6,
+    6,   6,   6,   7,   7,   7,   7,   7,   7,   7,   7,   8,   8,   8,   8,
+    8,   8,   8,   8,   11,  11,  11,  11,  11,  11,  11,  11,  12,  12,  12,
+    12,  12,  12,  12,  12,  14,  14,  14,  14,  14,  14,  14,  14,  15,  15,
+    15,  15,  15,  15,  15,  15,  16,  16,  16,  16,  16,  16,  16,  16,  17,
+    17,  17,  17,  17,  17,  17,  17,  18,  18,  18,  18,  18,  18,  18,  18,
+    19,  19,  19,  19,  19,  19,  19,  19,  20,  20,  20,  20,  20,  20,  20,
+    20,  21,  21,  21,  21,  21,  21,  21,  21,  23,  23,  23,  23,  23,  23,
+    23,  23,  24,  24,  24,  24,  24,  24,  24,  24,  25,  25,  25,  25,  25,
+    25,  25,  25,  26,  26,  26,  26,  26,  26,  26,  26,  27,  27,  27,  27,
+    27,  27,  27,  27,  28,  28,  28,  28,  28,  28,  28,  28,  29,  29,  29,
+    29,  29,  29,  29,  29,  30,  30,  30,  30,  30,  30,  30,  30,  31,  31,
+    31,  31,  31,  31,  31,  31,  127, 127, 127, 127, 127, 127, 127, 127, 220,
+    220, 220, 220, 220, 220, 220, 220, 249, 249, 249, 249, 249, 249, 249, 249,
+    10,  10,  13,  13,  22,  22,  256, 256, 67,  67,  67,  67,  67,  67,  67,
+    67,  68,  68,  68,  68,  68,  68,  68,  68,  95,  95,  95,  95,  95,  95,
+    95,  95,  98,  98,  98,  98,  98,  98,  98,  98,  100, 100, 100, 100, 100,
+    100, 100, 100, 102, 102, 102, 102, 102, 102, 102, 102, 103, 103, 103, 103,
+    103, 103, 103, 103, 104, 104, 104, 104, 104, 104, 104, 104, 108, 108, 108,
+    108, 108, 108, 108, 108, 109, 109, 109, 109, 109, 109, 109, 109, 110, 110,
+    110, 110, 110, 110, 110, 110, 112, 112, 112, 112, 112, 112, 112, 112, 114,
+    114, 114, 114, 114, 114, 114, 114, 117, 117, 117, 117, 117, 117, 117, 117,
+    58,  58,  58,  58,  66,  66,  66,  66,  67,  67,  67,  67,  68,  68,  68,
+    68,  69,  69,  69,  69,  70,  70,  70,  70,  71,  71,  71,  71,  72,  72,
+    72,  72,  73,  73,  73,  73,  74,  74,  74,  74,  75,  75,  75,  75,  76,
+    76,  76,  76,  77,  77,  77,  77,  78,  78,  78,  78,  79,  79,  79,  79,
+    80,  80,  80,  80,  81,  81,  81,  81,  82,  82,  82,  82,  83,  83,  83,
+    83,  84,  84,  84,  84,  85,  85,  85,  85,  86,  86,  86,  86,  87,  87,
+    87,  87,  89,  89,  89,  89,  106, 106, 106, 106, 107, 107, 107, 107, 113,
+    113, 113, 113, 118, 118, 118, 118, 119, 119, 119, 119, 120, 120, 120, 120,
+    121, 121, 121, 121, 122, 122, 122, 122, 38,  38,  42,  42,  44,  44,  59,
+    59,  88,  88,  90,  90,  -1,  -1,  -1,  -1,  33,  33,  33,  33,  33,  33,
+    33,  33,  34,  34,  34,  34,  34,  34,  34,  34,  40,  40,  40,  40,  40,
+    40,  40,  40,  41,  41,  41,  41,  41,  41,  41,  41,  63,  63,  63,  63,
+    63,  63,  63,  63,  39,  39,  39,  39,  43,  43,  43,  43,  124, 124, 124,
+    124, 35,  35,  62,  62,  0,   36,  64,  91,  93,  126, -1,  -1,  94,  94,
+    94,  94,  94,  94,  94,  94,  125, 125, 125, 125, 125, 125, 125, 125, 60,
+    60,  60,  60,  96,  96,  96,  96,  123, 123, 123, 123, -1,  -1,  -1,  -1,
+    92,  92,  92,  92,  195, 195, 195, 195, 208, 208, 208, 208, 128, 128, 130,
+    130, 131, 131, 162, 162, 184, 184, 194, 194, 224, 224, 226, 226, 153, 161,
+    167, 172, 176, 177, 179, 209, 216, 217, 227, 229, 230, -1,  -1,  -1,  -1,
+    -1,  -1,  -1,  129, 129, 129, 129, 129, 129, 129, 129, 132, 132, 132, 132,
+    132, 132, 132, 132, 133, 133, 133, 133, 133, 133, 133, 133, 134, 134, 134,
+    134, 134, 134, 134, 134, 136, 136, 136, 136, 136, 136, 136, 136, 146, 146,
+    146, 146, 146, 146, 146, 146, 154, 154, 154, 154, 154, 154, 154, 154, 156,
+    156, 156, 156, 156, 156, 156, 156, 160, 160, 160, 160, 160, 160, 160, 160,
+    163, 163, 163, 163, 163, 163, 163, 163, 164, 164, 164, 164, 164, 164, 164,
+    164, 169, 169, 169, 169, 169, 169, 169, 169, 170, 170, 170, 170, 170, 170,
+    170, 170, 173, 173, 173, 173, 173, 173, 173, 173, 178, 178, 178, 178, 178,
+    178, 178, 178, 181, 181, 181, 181, 181, 181, 181, 181, 185, 185, 185, 185,
+    185, 185, 185, 185, 186, 186, 186, 186, 186, 186, 186, 186, 187, 187, 187,
+    187, 187, 187, 187, 187, 189, 189, 189, 189, 189, 189, 189, 189, 190, 190,
+    190, 190, 190, 190, 190, 190, 196, 196, 196, 196, 196, 196, 196, 196, 198,
+    198, 198, 198, 198, 198, 198, 198, 228, 228, 228, 228, 228, 228, 228, 228,
+    232, 232, 232, 232, 232, 232, 232, 232, 233, 233, 233, 233, 233, 233, 233,
+    233, 1,   1,   1,   1,   135, 135, 135, 135, 137, 137, 137, 137, 138, 138,
+    138, 138, 139, 139, 139, 139, 140, 140, 140, 140, 141, 141, 141, 141, 143,
+    143, 143, 143, 147, 147, 147, 147, 149, 149, 149, 149, 150, 150, 150, 150,
+    151, 151, 151, 151, 152, 152, 152, 152, 155, 155, 155, 155, 157, 157, 157,
+    157, 158, 158, 158, 158, 165, 165, 165, 165, 166, 166, 166, 166, 168, 168,
+    168, 168, 174, 174, 174, 174, 175, 175, 175, 175, 180, 180, 180, 180, 182,
+    182, 182, 182, 183, 183, 183, 183, 188, 188, 188, 188, 191, 191, 191, 191,
+    197, 197, 197, 197, 231, 231, 231, 231, 239, 239, 239, 239, 9,   9,   142,
+    142, 144, 144, 145, 145, 148, 148, 159, 159, 171, 171, 206, 206, 215, 215,
+    225, 225, 236, 236, 237, 237, 199, 207, 234, 235, 192, 192, 192, 192, 192,
+    192, 192, 192, 193, 193, 193, 193, 193, 193, 193, 193, 200, 200, 200, 200,
+    200, 200, 200, 200, 201, 201, 201, 201, 201, 201, 201, 201, 202, 202, 202,
+    202, 202, 202, 202, 202, 205, 205, 205, 205, 205, 205, 205, 205, 210, 210,
+    210, 210, 210, 210, 210, 210, 213, 213, 213, 213, 213, 213, 213, 213, 218,
+    218, 218, 218, 218, 218, 218, 218, 219, 219, 219, 219, 219, 219, 219, 219,
+    238, 238, 238, 238, 238, 238, 238, 238, 240, 240, 240, 240, 240, 240, 240,
+    240, 242, 242, 242, 242, 242, 242, 242, 242, 243, 243, 243, 243, 243, 243,
+    243, 243, 255, 255, 255, 255, 255, 255, 255, 255, 203, 203, 203, 203, 204,
+    204, 204, 204, 211, 211, 211, 211, 212, 212, 212, 212, 214, 214, 214, 214,
+    221, 221, 221, 221, 222, 222, 222, 222, 223, 223, 223, 223, 241, 241, 241,
+    241, 244, 244, 244, 244, 245, 245, 245, 245, 246, 246, 246, 246, 247, 247,
+    247, 247, 248, 248, 248, 248, 250, 250, 250, 250, 251, 251, 251, 251, 252,
+    252, 252, 252, 253, 253, 253, 253, 254, 254, 254, 254, 2,   2,   3,   3,
+    4,   4,   5,   5,   6,   6,   7,   7,   8,   8,   11,  11,  12,  12,  14,
+    14,  15,  15,  16,  16,  17,  17,  18,  18,  19,  19,  20,  20,  21,  21,
+    23,  23,  24,  24,  25,  25,  26,  26,  27,  27,  28,  28,  29,  29,  30,
+    30,  31,  31,  127, 127, 220, 220, 249, 249, -1,  -1,  10,  10,  10,  10,
+    10,  10,  10,  10,  13,  13,  13,  13,  13,  13,  13,  13,  22,  22,  22,
+    22,  22,  22,  22,  22,  256, 256, 256, 256, 256, 256, 256, 256, 45,  45,
+    45,  45,  45,  45,  45,  45,  46,  46,  46,  46,  46,  46,  46,  46,  47,
+    47,  47,  47,  47,  47,  47,  47,  51,  51,  51,  51,  51,  51,  51,  51,
+    52,  52,  52,  52,  52,  52,  52,  52,  53,  53,  53,  53,  53,  53,  53,
+    53,  54,  54,  54,  54,  54,  54,  54,  54,  55,  55,  55,  55,  55,  55,
+    55,  55,  56,  56,  56,  56,  56,  56,  56,  56,  57,  57,  57,  57,  57,
+    57,  57,  57,  50,  50,  50,  50,  50,  50,  50,  50,  97,  97,  97,  97,
+    97,  97,  97,  97,  99,  99,  99,  99,  99,  99,  99,  99,  101, 101, 101,
+    101, 101, 101, 101, 101, 105, 105, 105, 105, 105, 105, 105, 105, 111, 111,
+    111, 111, 111, 111, 111, 111, 115, 115, 115, 115, 115, 115, 115, 115, 116,
+    116, 116, 116, 116, 116, 116, 116, 32,  32,  32,  32,  37,  37,  37,  37,
+    45,  45,  45,  45,  46,  46,  46,  46,  47,  47,  47,  47,  51,  51,  51,
+    51,  52,  52,  52,  52,  53,  53,  53,  53,  54,  54,  54,  54,  55,  55,
+    55,  55,  56,  56,  56,  56,  57,  57,  57,  57,  61,  61,  61,  61,  65,
+    65,  65,  65,  95,  95,  95,  95,  98,  98,  98,  98,  100, 100, 100, 100,
+    102, 102, 102, 102, 103, 103, 103, 103, 104, 104, 104, 104, 108, 108, 108,
+    108, 109, 109, 109, 109, 110, 110, 110, 110, 112, 112, 112, 112, 114, 114,
+    114, 114, 117, 117, 117, 117, 58,  58,  66,  66,  67,  67,  68,  68,  69,
+    69,  70,  70,  71,  71,  72,  72,  73,  73,  74,  74,  75,  75,  76,  76,
+    77,  77,  78,  78,  79,  79,  80,  80,  81,  81,  82,  82,  83,  83,  84,
+    84,  85,  85,  86,  86,  87,  87,  89,  89,  106, 106, 107, 107, 113, 113,
+    118, 118, 119, 119, 120, 120, 121, 121, 122, 122, 38,  42,  44,  59,  88,
+    90,  -1,  -1,  33,  33,  33,  33,  34,  34,  34,  34,  40,  40,  40,  40,
+    41,  41,  41,  41,  63,  63,  63,  63,  39,  39,  43,  43,  124, 124, 35,
+    62,  -1,  -1,  -1,  -1,  0,   0,   0,   0,   0,   0,   0,   0,   36,  36,
+    36,  36,  36,  36,  36,  36,  64,  64,  64,  64,  64,  64,  64,  64,  91,
+    91,  91,  91,  91,  91,  91,  91,  93,  93,  93,  93,  93,  93,  93,  93,
+    126, 126, 126, 126, 126, 126, 126, 126, 94,  94,  94,  94,  125, 125, 125,
+    125, 60,  60,  96,  96,  123, 123, -1,  -1,  92,  92,  195, 195, 208, 208,
+    128, 130, 131, 162, 184, 194, 224, 226, -1,  -1,  153, 153, 153, 153, 153,
+    153, 153, 153, 161, 161, 161, 161, 161, 161, 161, 161, 167, 167, 167, 167,
+    167, 167, 167, 167, 172, 172, 172, 172, 172, 172, 172, 172, 176, 176, 176,
+    176, 176, 176, 176, 176, 177, 177, 177, 177, 177, 177, 177, 177, 179, 179,
+    179, 179, 179, 179, 179, 179, 209, 209, 209, 209, 209, 209, 209, 209, 216,
+    216, 216, 216, 216, 216, 216, 216, 217, 217, 217, 217, 217, 217, 217, 217,
+    227, 227, 227, 227, 227, 227, 227, 227, 229, 229, 229, 229, 229, 229, 229,
+    229, 230, 230, 230, 230, 230, 230, 230, 230, 129, 129, 129, 129, 132, 132,
+    132, 132, 133, 133, 133, 133, 134, 134, 134, 134, 136, 136, 136, 136, 146,
+    146, 146, 146, 154, 154, 154, 154, 156, 156, 156, 156, 160, 160, 160, 160,
+    163, 163, 163, 163, 164, 164, 164, 164, 169, 169, 169, 169, 170, 170, 170,
+    170, 173, 173, 173, 173, 178, 178, 178, 178, 181, 181, 181, 181, 185, 185,
+    185, 185, 186, 186, 186, 186, 187, 187, 187, 187, 189, 189, 189, 189, 190,
+    190, 190, 190, 196, 196, 196, 196, 198, 198, 198, 198, 228, 228, 228, 228,
+    232, 232, 232, 232, 233, 233, 233, 233, 1,   1,   135, 135, 137, 137, 138,
+    138, 139, 139, 140, 140, 141, 141, 143, 143, 147, 147, 149, 149, 150, 150,
+    151, 151, 152, 152, 155, 155, 157, 157, 158, 158, 165, 165, 166, 166, 168,
+    168, 174, 174, 175, 175, 180, 180, 182, 182, 183, 183, 188, 188, 191, 191,
+    197, 197, 231, 231, 239, 239, 9,   142, 144, 145, 148, 159, 171, 206, 215,
+    225, 236, 237, -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  199, 199,
+    199, 199, 199, 199, 199, 199, 207, 207, 207, 207, 207, 207, 207, 207, 234,
+    234, 234, 234, 234, 234, 234, 234, 235, 235, 235, 235, 235, 235, 235, 235,
+    192, 192, 192, 192, 193, 193, 193, 193, 200, 200, 200, 200, 201, 201, 201,
+    201, 202, 202, 202, 202, 205, 205, 205, 205, 210, 210, 210, 210, 213, 213,
+    213, 213, 218, 218, 218, 218, 219, 219, 219, 219, 238, 238, 238, 238, 240,
+    240, 240, 240, 242, 242, 242, 242, 243, 243, 243, 243, 255, 255, 255, 255,
+    203, 203, 204, 204, 211, 211, 212, 212, 214, 214, 221, 221, 222, 222, 223,
+    223, 241, 241, 244, 244, 245, 245, 246, 246, 247, 247, 248, 248, 250, 250,
+    251, 251, 252, 252, 253, 253, 254, 254, 2,   3,   4,   5,   6,   7,   8,
+    11,  12,  14,  15,  16,  17,  18,  19,  20,  21,  23,  24,  25,  26,  27,
+    28,  29,  30,  31,  127, 220, 249, -1,  10,  10,  10,  10,  13,  13,  13,
+    13,  22,  22,  22,  22,  256, 256, 256, 256,
+};
+
+static const uint8_t inverse_base64[256] = {
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62,  255,
+    255, 255, 63,  52,  53,  54,  55,  56,  57,  58,  59,  60,  61,  255, 255,
+    255, 64,  255, 255, 255, 0,   1,   2,   3,   4,   5,   6,   7,   8,   9,
+    10,  11,  12,  13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23,  24,
+    25,  255, 255, 255, 255, 255, 255, 26,  27,  28,  29,  30,  31,  32,  33,
+    34,  35,  36,  37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,
+    49,  50,  51,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255,
+};
+
+static void GPR_ATTRIBUTE_NOINLINE on_hdr_log(grpc_mdelem md) {
+  char* k = grpc_slice_to_c_string(GRPC_MDKEY(md));
+  char* v = nullptr;
+  if (grpc_is_binary_header_internal(GRPC_MDKEY(md))) {
+    v = grpc_dump_slice(GRPC_MDVALUE(md), GPR_DUMP_HEX);
+  } else {
+    v = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+  }
+  gpr_log(
+      GPR_INFO,
+      "Decode: '%s: %s', elem_interned=%d [%d], k_interned=%d, v_interned=%d",
+      k, v, GRPC_MDELEM_IS_INTERNED(md), GRPC_MDELEM_STORAGE(md),
+      grpc_slice_is_interned(GRPC_MDKEY(md)),
+      grpc_slice_is_interned(GRPC_MDVALUE(md)));
+  gpr_free(k);
+  gpr_free(v);
+}
+
+/* emission helpers */
+template <bool do_add>
+static grpc_error* on_hdr(grpc_chttp2_hpack_parser* p, grpc_mdelem md) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_chttp2_hpack_parser)) {
+    on_hdr_log(md);
+  }
+  if (do_add) {
+    GPR_DEBUG_ASSERT(GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_INTERNED ||
+                     GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_STATIC);
+    grpc_error* err = grpc_chttp2_hptbl_add(&p->table, md);
+    if (GPR_UNLIKELY(err != GRPC_ERROR_NONE)) return err;
+  }
+  return p->on_header(p->on_header_user_data, md);
+}
+
+static grpc_core::UnmanagedMemorySlice take_string_extern(
+    grpc_chttp2_hpack_parser* /*p*/, grpc_chttp2_hpack_parser_string* str) {
+  grpc_core::UnmanagedMemorySlice s;
+  if (!str->copied) {
+    GPR_DEBUG_ASSERT(!grpc_slice_is_interned(str->data.referenced));
+    s = static_cast<grpc_core::UnmanagedMemorySlice&>(str->data.referenced);
+    str->copied = true;
+    str->data.referenced = grpc_core::UnmanagedMemorySlice();
+  } else {
+    s = grpc_core::UnmanagedMemorySlice(str->data.copied.str,
+                                        str->data.copied.length);
+  }
+  str->data.copied.length = 0;
+  return s;
+}
+
+static grpc_core::ManagedMemorySlice take_string_intern(
+    grpc_chttp2_hpack_parser* /*p*/, grpc_chttp2_hpack_parser_string* str) {
+  grpc_core::ManagedMemorySlice s;
+  if (!str->copied) {
+    s = grpc_core::ManagedMemorySlice(&str->data.referenced);
+    grpc_slice_unref_internal(str->data.referenced);
+    str->copied = true;
+    str->data.referenced = grpc_empty_slice();
+  } else {
+    s = grpc_core::ManagedMemorySlice(str->data.copied.str,
+                                      str->data.copied.length);
+  }
+  str->data.copied.length = 0;
+  return s;
+}
+
+/* jump to the next state */
+static grpc_error* parse_next(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                              const uint8_t* end) {
+  p->state = *p->next_state++;
+  return p->state(p, cur, end);
+}
+
+/* begin parsing a header: all functionality is encoded into lookup tables
+   above */
+static grpc_error* parse_begin(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                               const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_begin;
+    return GRPC_ERROR_NONE;
+  }
+
+  return first_byte_action[first_byte_lut[*cur]](p, cur, end);
+}
+
+/* stream dependency and prioritization data: we just skip it */
+static grpc_error* parse_stream_weight(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_stream_weight;
+    return GRPC_ERROR_NONE;
+  }
+
+  return p->after_prioritization(p, cur + 1, end);
+}
+
+static grpc_error* parse_stream_dep3(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_stream_dep3;
+    return GRPC_ERROR_NONE;
+  }
+
+  return parse_stream_weight(p, cur + 1, end);
+}
+
+static grpc_error* parse_stream_dep2(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_stream_dep2;
+    return GRPC_ERROR_NONE;
+  }
+
+  return parse_stream_dep3(p, cur + 1, end);
+}
+
+static grpc_error* parse_stream_dep1(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_stream_dep1;
+    return GRPC_ERROR_NONE;
+  }
+
+  return parse_stream_dep2(p, cur + 1, end);
+}
+
+static grpc_error* parse_stream_dep0(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_stream_dep0;
+    return GRPC_ERROR_NONE;
+  }
+
+  return parse_stream_dep1(p, cur + 1, end);
+}
+
+static grpc_error* GPR_ATTRIBUTE_NOINLINE
+on_invalid_hpack_idx(grpc_chttp2_hpack_parser* p) {
+  return grpc_error_set_int(
+      grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("Invalid HPACK index received"),
+          GRPC_ERROR_INT_INDEX, static_cast<intptr_t>(p->index)),
+      GRPC_ERROR_INT_SIZE, static_cast<intptr_t>(p->table.num_ents));
+}
+
+/* emit an indexed field; jumps to begin the next field on completion */
+static grpc_error* finish_indexed_field(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur,
+                                        const uint8_t* end) {
+  grpc_mdelem md = grpc_chttp2_hptbl_lookup<true>(&p->table, p->index);
+  if (GPR_UNLIKELY(GRPC_MDISNULL(md))) {
+    return on_invalid_hpack_idx(p);
+  }
+  GRPC_STATS_INC_HPACK_RECV_INDEXED();
+  grpc_error* err = on_hdr<false>(p, md);
+  if (GPR_UNLIKELY(err != GRPC_ERROR_NONE)) return err;
+  return parse_begin(p, cur, end);
+}
+
+/* parse an indexed field with index < 127 */
+static grpc_error* parse_indexed_field(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  p->dynamic_table_update_allowed = 0;
+  p->index = (*cur) & 0x7f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  return finish_indexed_field(p, cur + 1, end);
+}
+
+/* parse an indexed field with index >= 127 */
+static grpc_error* parse_indexed_field_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      finish_indexed_field};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = 0x7f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  p->parsing.value = &p->index;
+  return parse_value0(p, cur + 1, end);
+}
+
+/* When finishing with a header, get the cached md element for this index.
+   This is set in parse_value_string(). We ensure (in debug mode) that the
+   cached metadata corresponds with the index we are examining. */
+static grpc_mdelem get_precomputed_md_for_idx(grpc_chttp2_hpack_parser* p) {
+  GPR_DEBUG_ASSERT(p->md_for_index.payload != 0);
+  GPR_DEBUG_ASSERT(static_cast<int64_t>(p->index) == p->precomputed_md_index);
+  grpc_mdelem md = p->md_for_index;
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+#ifndef NDEBUG
+  p->precomputed_md_index = -1;
+#endif
+  return md;
+}
+
+static const grpc_core::ManagedMemorySlice& get_indexed_key(grpc_mdelem md) {
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(md));
+  return static_cast<const grpc_core::ManagedMemorySlice&>(
+      grpc_slice_ref_internal(GRPC_MDKEY(md)));
+}
+
+/* finish a literal header with incremental indexing */
+static grpc_error* finish_lithdr_incidx(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur,
+                                        const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX();
+  grpc_mdelem md = get_precomputed_md_for_idx(p);
+  grpc_error* err = on_hdr<true>(
+      p, grpc_mdelem_from_slices(get_indexed_key(md),
+                                 take_string_intern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* finish a literal header with incremental indexing with no index */
+static grpc_error* finish_lithdr_incidx_v(grpc_chttp2_hpack_parser* p,
+                                          const uint8_t* cur,
+                                          const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V();
+  grpc_error* err = on_hdr<true>(
+      p, grpc_mdelem_from_slices(take_string_intern(p, &p->key),
+                                 take_string_intern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* parse a literal header with incremental indexing; index < 63 */
+static grpc_error* parse_lithdr_incidx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_value_string_with_indexed_key, finish_lithdr_incidx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = (*cur) & 0x3f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* parse a literal header with incremental indexing; index >= 63 */
+static grpc_error* parse_lithdr_incidx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_string_prefix, parse_value_string_with_indexed_key,
+      finish_lithdr_incidx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = 0x3f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  p->parsing.value = &p->index;
+  return parse_value0(p, cur + 1, end);
+}
+
+/* parse a literal header with incremental indexing; index = 0 */
+static grpc_error* parse_lithdr_incidx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_key_string, parse_string_prefix,
+      parse_value_string_with_literal_key, finish_lithdr_incidx_v};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* finish a literal header without incremental indexing */
+static grpc_error* finish_lithdr_notidx(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur,
+                                        const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX();
+  grpc_mdelem md = get_precomputed_md_for_idx(p);
+  grpc_error* err = on_hdr<false>(
+      p, grpc_mdelem_from_slices(get_indexed_key(md),
+                                 take_string_extern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* finish a literal header without incremental indexing with index = 0 */
+static grpc_error* finish_lithdr_notidx_v(grpc_chttp2_hpack_parser* p,
+                                          const uint8_t* cur,
+                                          const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V();
+  grpc_error* err = on_hdr<false>(
+      p, grpc_mdelem_from_slices(take_string_intern(p, &p->key),
+                                 take_string_extern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* parse a literal header without incremental indexing; index < 15 */
+static grpc_error* parse_lithdr_notidx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_value_string_with_indexed_key, finish_lithdr_notidx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = (*cur) & 0xf;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* parse a literal header without incremental indexing; index >= 15 */
+static grpc_error* parse_lithdr_notidx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_string_prefix, parse_value_string_with_indexed_key,
+      finish_lithdr_notidx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = 0xf;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  p->parsing.value = &p->index;
+  return parse_value0(p, cur + 1, end);
+}
+
+/* parse a literal header without incremental indexing; index == 0 */
+static grpc_error* parse_lithdr_notidx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_key_string, parse_string_prefix,
+      parse_value_string_with_literal_key, finish_lithdr_notidx_v};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* finish a literal header that is never indexed */
+static grpc_error* finish_lithdr_nvridx(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur,
+                                        const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX();
+  grpc_mdelem md = get_precomputed_md_for_idx(p);
+  grpc_error* err = on_hdr<false>(
+      p, grpc_mdelem_from_slices(get_indexed_key(md),
+                                 take_string_extern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* finish a literal header that is never indexed with an extra value */
+static grpc_error* finish_lithdr_nvridx_v(grpc_chttp2_hpack_parser* p,
+                                          const uint8_t* cur,
+                                          const uint8_t* end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V();
+  grpc_error* err = on_hdr<false>(
+      p, grpc_mdelem_from_slices(take_string_intern(p, &p->key),
+                                 take_string_extern(p, &p->value)));
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* parse a literal header that is never indexed; index < 15 */
+static grpc_error* parse_lithdr_nvridx(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_value_string_with_indexed_key, finish_lithdr_nvridx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = (*cur) & 0xf;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* parse a literal header that is never indexed; index >= 15 */
+static grpc_error* parse_lithdr_nvridx_x(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_string_prefix, parse_value_string_with_indexed_key,
+      finish_lithdr_nvridx};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  p->index = 0xf;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  p->parsing.value = &p->index;
+  return parse_value0(p, cur + 1, end);
+}
+
+/* parse a literal header that is never indexed; index == 0 */
+static grpc_error* parse_lithdr_nvridx_v(grpc_chttp2_hpack_parser* p,
+                                         const uint8_t* cur,
+                                         const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      parse_key_string, parse_string_prefix,
+      parse_value_string_with_literal_key, finish_lithdr_nvridx_v};
+  p->dynamic_table_update_allowed = 0;
+  p->next_state = and_then;
+  return parse_string_prefix(p, cur + 1, end);
+}
+
+/* finish parsing a max table size change */
+static grpc_error* finish_max_tbl_size(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_chttp2_hpack_parser)) {
+    gpr_log(GPR_INFO, "MAX TABLE SIZE: %d", p->index);
+  }
+  grpc_error* err =
+      grpc_chttp2_hptbl_set_current_table_size(&p->table, p->index);
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_begin(p, cur, end);
+}
+
+/* parse a max table size change, max size < 15 */
+static grpc_error* parse_max_tbl_size(grpc_chttp2_hpack_parser* p,
+                                      const uint8_t* cur, const uint8_t* end) {
+  if (p->dynamic_table_update_allowed == 0) {
+    return parse_error(
+        p, cur, end,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "More than two max table size changes in a single frame"));
+  }
+  p->dynamic_table_update_allowed--;
+  p->index = (*cur) & 0x1f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  return finish_max_tbl_size(p, cur + 1, end);
+}
+
+/* parse a max table size change, max size >= 15 */
+static grpc_error* parse_max_tbl_size_x(grpc_chttp2_hpack_parser* p,
+                                        const uint8_t* cur,
+                                        const uint8_t* end) {
+  static const grpc_chttp2_hpack_parser_state and_then[] = {
+      finish_max_tbl_size};
+  if (p->dynamic_table_update_allowed == 0) {
+    return parse_error(
+        p, cur, end,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "More than two max table size changes in a single frame"));
+  }
+  p->dynamic_table_update_allowed--;
+  p->next_state = and_then;
+  p->index = 0x1f;
+  p->md_for_index.payload = 0; /* Invalidate cached md when index changes. */
+  p->parsing.value = &p->index;
+  return parse_value0(p, cur + 1, end);
+}
+
+/* a parse error: jam the parse state into parse_error, and return error */
+static grpc_error* parse_error(grpc_chttp2_hpack_parser* p,
+                               const uint8_t* /*cur*/, const uint8_t* /*end*/,
+                               grpc_error* err) {
+  GPR_ASSERT(err != GRPC_ERROR_NONE);
+  if (p->last_error == GRPC_ERROR_NONE) {
+    p->last_error = GRPC_ERROR_REF(err);
+  }
+  p->state = still_parse_error;
+  return err;
+}
+
+static grpc_error* still_parse_error(grpc_chttp2_hpack_parser* p,
+                                     const uint8_t* /*cur*/,
+                                     const uint8_t* /*end*/) {
+  return GRPC_ERROR_REF(p->last_error);
+}
+
+static grpc_error* parse_illegal_op(grpc_chttp2_hpack_parser* p,
+                                    const uint8_t* cur, const uint8_t* end) {
+  GPR_ASSERT(cur != end);
+  char* msg;
+  gpr_asprintf(&msg, "Illegal hpack op code %d", *cur);
+  grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  gpr_free(msg);
+  return parse_error(p, cur, end, err);
+}
+
+/* parse the 1st byte of a varint into p->parsing.value
+   no overflow is possible */
+static grpc_error* parse_value0(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_value0;
+    return GRPC_ERROR_NONE;
+  }
+
+  *p->parsing.value += (*cur) & 0x7f;
+
+  if ((*cur) & 0x80) {
+    return parse_value1(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+}
+
+/* parse the 2nd byte of a varint into p->parsing.value
+   no overflow is possible */
+static grpc_error* parse_value1(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_value1;
+    return GRPC_ERROR_NONE;
+  }
+
+  *p->parsing.value += ((static_cast<uint32_t>(*cur)) & 0x7f) << 7;
+
+  if ((*cur) & 0x80) {
+    return parse_value2(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+}
+
+/* parse the 3rd byte of a varint into p->parsing.value
+   no overflow is possible */
+static grpc_error* parse_value2(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_value2;
+    return GRPC_ERROR_NONE;
+  }
+
+  *p->parsing.value += ((static_cast<uint32_t>(*cur)) & 0x7f) << 14;
+
+  if ((*cur) & 0x80) {
+    return parse_value3(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+}
+
+/* parse the 4th byte of a varint into p->parsing.value
+   no overflow is possible */
+static grpc_error* parse_value3(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_value3;
+    return GRPC_ERROR_NONE;
+  }
+
+  *p->parsing.value += ((static_cast<uint32_t>(*cur)) & 0x7f) << 21;
+
+  if ((*cur) & 0x80) {
+    return parse_value4(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+}
+
+/* parse the 5th byte of a varint into p->parsing.value
+   depending on the byte, we may overflow, and care must be taken */
+static grpc_error* parse_value4(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  uint8_t c;
+  uint32_t cur_value;
+  uint32_t add_value;
+  char* msg;
+
+  if (cur == end) {
+    p->state = parse_value4;
+    return GRPC_ERROR_NONE;
+  }
+
+  c = (*cur) & 0x7f;
+  if (c > 0xf) {
+    goto error;
+  }
+
+  cur_value = *p->parsing.value;
+  add_value = (static_cast<uint32_t>(c)) << 28;
+  if (add_value > 0xffffffffu - cur_value) {
+    goto error;
+  }
+
+  *p->parsing.value = cur_value + add_value;
+
+  if ((*cur) & 0x80) {
+    return parse_value5up(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+
+error:
+  gpr_asprintf(&msg,
+               "integer overflow in hpack integer decoding: have 0x%08x, "
+               "got byte 0x%02x on byte 5",
+               *p->parsing.value, *cur);
+  grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  gpr_free(msg);
+  return parse_error(p, cur, end, err);
+}
+
+/* parse any trailing bytes in a varint: it's possible to append an arbitrary
+   number of 0x80's and not affect the value - a zero will terminate - and
+   anything else will overflow */
+static grpc_error* parse_value5up(grpc_chttp2_hpack_parser* p,
+                                  const uint8_t* cur, const uint8_t* end) {
+  while (cur != end && *cur == 0x80) {
+    ++cur;
+  }
+
+  if (cur == end) {
+    p->state = parse_value5up;
+    return GRPC_ERROR_NONE;
+  }
+
+  if (*cur == 0) {
+    return parse_next(p, cur + 1, end);
+  }
+
+  char* msg;
+  gpr_asprintf(&msg,
+               "integer overflow in hpack integer decoding: have 0x%08x, "
+               "got byte 0x%02x sometime after byte 5",
+               *p->parsing.value, *cur);
+  grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  gpr_free(msg);
+  return parse_error(p, cur, end, err);
+}
+
+/* parse a string prefix */
+static grpc_error* parse_string_prefix(grpc_chttp2_hpack_parser* p,
+                                       const uint8_t* cur, const uint8_t* end) {
+  if (cur == end) {
+    p->state = parse_string_prefix;
+    return GRPC_ERROR_NONE;
+  }
+
+  p->strlen = (*cur) & 0x7f;
+  p->huff = (*cur) >> 7;
+  if (p->strlen == 0x7f) {
+    p->parsing.value = &p->strlen;
+    return parse_value0(p, cur + 1, end);
+  } else {
+    return parse_next(p, cur + 1, end);
+  }
+}
+
+/* append some bytes to a string */
+static void append_bytes(grpc_chttp2_hpack_parser_string* str,
+                         const uint8_t* data, size_t length) {
+  if (length == 0) return;
+  if (length + str->data.copied.length > str->data.copied.capacity) {
+    GPR_ASSERT(str->data.copied.length + length <= UINT32_MAX);
+    str->data.copied.capacity =
+        static_cast<uint32_t>(str->data.copied.length + length);
+    str->data.copied.str = static_cast<char*>(
+        gpr_realloc(str->data.copied.str, str->data.copied.capacity));
+  }
+  memcpy(str->data.copied.str + str->data.copied.length, data, length);
+  GPR_ASSERT(length <= UINT32_MAX - str->data.copied.length);
+  str->data.copied.length += static_cast<uint32_t>(length);
+}
+
+static grpc_error* append_string(grpc_chttp2_hpack_parser* p,
+                                 const uint8_t* cur, const uint8_t* end) {
+  grpc_chttp2_hpack_parser_string* str = p->parsing.str;
+  uint32_t bits;
+  uint8_t decoded[3];
+  switch (static_cast<binary_state>(p->binary)) {
+    case NOT_BINARY:
+      append_bytes(str, cur, static_cast<size_t>(end - cur));
+      return GRPC_ERROR_NONE;
+    case BINARY_BEGIN:
+      if (cur == end) {
+        p->binary = BINARY_BEGIN;
+        return GRPC_ERROR_NONE;
+      }
+      if (*cur == 0) {
+        /* 'true-binary' case */
+        ++cur;
+        p->binary = NOT_BINARY;
+        GRPC_STATS_INC_HPACK_RECV_BINARY();
+        append_bytes(str, cur, static_cast<size_t>(end - cur));
+        return GRPC_ERROR_NONE;
+      }
+      GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64();
+    /* fallthrough */
+    b64_byte0:
+    case B64_BYTE0:
+      if (cur == end) {
+        p->binary = B64_BYTE0;
+        return GRPC_ERROR_NONE;
+      }
+      bits = inverse_base64[*cur];
+      ++cur;
+      if (bits == 255)
+        return parse_error(
+            p, cur, end,
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Illegal base64 character"));
+      else if (bits == 64)
+        goto b64_byte0;
+      p->base64_buffer = bits << 18;
+    /* fallthrough */
+    b64_byte1:
+    case B64_BYTE1:
+      if (cur == end) {
+        p->binary = B64_BYTE1;
+        return GRPC_ERROR_NONE;
+      }
+      bits = inverse_base64[*cur];
+      ++cur;
+      if (bits == 255)
+        return parse_error(
+            p, cur, end,
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Illegal base64 character"));
+      else if (bits == 64)
+        goto b64_byte1;
+      p->base64_buffer |= bits << 12;
+    /* fallthrough */
+    b64_byte2:
+    case B64_BYTE2:
+      if (cur == end) {
+        p->binary = B64_BYTE2;
+        return GRPC_ERROR_NONE;
+      }
+      bits = inverse_base64[*cur];
+      ++cur;
+      if (bits == 255)
+        return parse_error(
+            p, cur, end,
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Illegal base64 character"));
+      else if (bits == 64)
+        goto b64_byte2;
+      p->base64_buffer |= bits << 6;
+    /* fallthrough */
+    b64_byte3:
+    case B64_BYTE3:
+      if (cur == end) {
+        p->binary = B64_BYTE3;
+        return GRPC_ERROR_NONE;
+      }
+      bits = inverse_base64[*cur];
+      ++cur;
+      if (bits == 255)
+        return parse_error(
+            p, cur, end,
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Illegal base64 character"));
+      else if (bits == 64)
+        goto b64_byte3;
+      p->base64_buffer |= bits;
+      bits = p->base64_buffer;
+      decoded[0] = static_cast<uint8_t>(bits >> 16);
+      decoded[1] = static_cast<uint8_t>(bits >> 8);
+      decoded[2] = static_cast<uint8_t>(bits);
+      append_bytes(str, decoded, 3);
+      goto b64_byte0;
+  }
+  GPR_UNREACHABLE_CODE(return parse_error(
+      p, cur, end,
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Should never reach here")));
+}
+
+static grpc_error* finish_str(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                              const uint8_t* end) {
+  uint8_t decoded[2];
+  uint32_t bits;
+  grpc_chttp2_hpack_parser_string* str = p->parsing.str;
+  switch (static_cast<binary_state>(p->binary)) {
+    case NOT_BINARY:
+      break;
+    case BINARY_BEGIN:
+      break;
+    case B64_BYTE0:
+      break;
+    case B64_BYTE1:
+      return parse_error(p, cur, end,
+                         GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                             "illegal base64 encoding")); /* illegal encoding */
+    case B64_BYTE2:
+      bits = p->base64_buffer;
+      if (bits & 0xffff) {
+        char* msg;
+        gpr_asprintf(&msg, "trailing bits in base64 encoding: 0x%04x",
+                     bits & 0xffff);
+        grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+        gpr_free(msg);
+        return parse_error(p, cur, end, err);
+      }
+      decoded[0] = static_cast<uint8_t>(bits >> 16);
+      append_bytes(str, decoded, 1);
+      break;
+    case B64_BYTE3:
+      bits = p->base64_buffer;
+      if (bits & 0xff) {
+        char* msg;
+        gpr_asprintf(&msg, "trailing bits in base64 encoding: 0x%02x",
+                     bits & 0xff);
+        grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+        gpr_free(msg);
+        return parse_error(p, cur, end, err);
+      }
+      decoded[0] = static_cast<uint8_t>(bits >> 16);
+      decoded[1] = static_cast<uint8_t>(bits >> 8);
+      append_bytes(str, decoded, 2);
+      break;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+/* decode a nibble from a huffman encoded stream */
+static grpc_error* huff_nibble(grpc_chttp2_hpack_parser* p, uint8_t nibble) {
+  int16_t emit = emit_sub_tbl[16 * emit_tbl[p->huff_state] + nibble];
+  int16_t next = next_sub_tbl[16 * next_tbl[p->huff_state] + nibble];
+  if (emit != -1) {
+    if (emit >= 0 && emit < 256) {
+      uint8_t c = static_cast<uint8_t>(emit);
+      grpc_error* err = append_string(p, &c, (&c) + 1);
+      if (err != GRPC_ERROR_NONE) return err;
+    } else {
+      assert(emit == 256);
+    }
+  }
+  p->huff_state = next;
+  return GRPC_ERROR_NONE;
+}
+
+/* decode full bytes from a huffman encoded stream */
+static grpc_error* add_huff_bytes(grpc_chttp2_hpack_parser* p,
+                                  const uint8_t* cur, const uint8_t* end) {
+  for (; cur != end; ++cur) {
+    grpc_error* err = huff_nibble(p, *cur >> 4);
+    if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+    err = huff_nibble(p, *cur & 0xf);
+    if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+/* decode some string bytes based on the current decoding mode
+   (huffman or not) */
+static grpc_error* add_str_bytes(grpc_chttp2_hpack_parser* p,
+                                 const uint8_t* cur, const uint8_t* end) {
+  if (p->huff) {
+    return add_huff_bytes(p, cur, end);
+  } else {
+    return append_string(p, cur, end);
+  }
+}
+
+/* parse a string - tries to do large chunks at a time */
+static grpc_error* parse_string(grpc_chttp2_hpack_parser* p, const uint8_t* cur,
+                                const uint8_t* end) {
+  size_t remaining = p->strlen - p->strgot;
+  size_t given = static_cast<size_t>(end - cur);
+  if (remaining <= given) {
+    grpc_error* err = add_str_bytes(p, cur, cur + remaining);
+    if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+    err = finish_str(p, cur + remaining, end);
+    if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+    return parse_next(p, cur + remaining, end);
+  } else {
+    grpc_error* err = add_str_bytes(p, cur, cur + given);
+    if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+    GPR_ASSERT(given <= UINT32_MAX - p->strgot);
+    p->strgot += static_cast<uint32_t>(given);
+    p->state = parse_string;
+    return GRPC_ERROR_NONE;
+  }
+}
+
+/* begin parsing a string - performs setup, calls parse_string */
+static grpc_error* begin_parse_string(grpc_chttp2_hpack_parser* p,
+                                      const uint8_t* cur, const uint8_t* end,
+                                      uint8_t binary,
+                                      grpc_chttp2_hpack_parser_string* str) {
+  if (!p->huff && binary == NOT_BINARY &&
+      static_cast<uint32_t>(end - cur) >= p->strlen &&
+      p->current_slice_refcount != nullptr) {
+    GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED();
+    str->copied = false;
+    str->data.referenced.refcount = p->current_slice_refcount;
+    str->data.referenced.data.refcounted.bytes = const_cast<uint8_t*>(cur);
+    str->data.referenced.data.refcounted.length = p->strlen;
+    grpc_slice_ref_internal(str->data.referenced);
+    return parse_next(p, cur + p->strlen, end);
+  }
+  p->strgot = 0;
+  str->copied = true;
+  str->data.copied.length = 0;
+  p->parsing.str = str;
+  p->huff_state = 0;
+  p->binary = binary;
+  switch (p->binary) {
+    case NOT_BINARY:
+      if (p->huff) {
+        GRPC_STATS_INC_HPACK_RECV_HUFFMAN();
+      } else {
+        GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED();
+      }
+      break;
+    case BINARY_BEGIN:
+      /* stats incremented later: don't know true binary or not */
+      break;
+    default:
+      abort();
+  }
+  return parse_string(p, cur, end);
+}
+
+/* parse the key string */
+static grpc_error* parse_key_string(grpc_chttp2_hpack_parser* p,
+                                    const uint8_t* cur, const uint8_t* end) {
+  return begin_parse_string(p, cur, end, NOT_BINARY, &p->key);
+}
+
+/* check if a key represents a binary header or not */
+
+static bool is_binary_literal_header(grpc_chttp2_hpack_parser* p) {
+  /* We know that either argument here is a reference counter slice.
+   * 1. If it is a grpc_core::StaticSlice, the refcount is set to kNoopRefcount.
+   * 2. If it's p->key.data.referenced, then p->key.copied was set to false,
+   *    which occurs in begin_parse_string() - where the refcount is set to
+   *    p->current_slice_refcount, which is not null. */
+  return grpc_is_refcounted_slice_binary_header(
+      p->key.copied ? grpc_core::ExternallyManagedSlice(
+                          p->key.data.copied.str, p->key.data.copied.length)
+                    : p->key.data.referenced);
+}
+
+/* Cache the metadata for the given index during initial parsing. This avoids a
+   pointless recomputation of the metadata when finishing a header. We read the
+   cached value in get_precomputed_md_for_idx(). */
+static void set_precomputed_md_idx(grpc_chttp2_hpack_parser* p,
+                                   grpc_mdelem md) {
+  GPR_DEBUG_ASSERT(p->md_for_index.payload == 0);
+  GPR_DEBUG_ASSERT(p->precomputed_md_index == -1);
+  p->md_for_index = md;
+#ifndef NDEBUG
+  p->precomputed_md_index = p->index;
+#endif
+}
+
+/* Determines if a metadata element key associated with the current parser index
+   is a binary indexed header during string parsing. We'll need to revisit this
+   metadata when we're done parsing, so we cache the metadata for this index
+   here using set_precomputed_md_idx(). */
+static grpc_error* is_binary_indexed_header(grpc_chttp2_hpack_parser* p,
+                                            bool* is) {
+  grpc_mdelem elem = grpc_chttp2_hptbl_lookup(&p->table, p->index);
+  if (GPR_UNLIKELY(GRPC_MDISNULL(elem))) {
+    return on_invalid_hpack_idx(p);
+  }
+  /* We know that GRPC_MDKEY(elem) points to a reference counted slice since:
+   * 1. elem was a result of grpc_chttp2_hptbl_lookup
+   * 2. An item in this table is either static (see entries with
+   *    index < GRPC_CHTTP2_LAST_STATIC_ENTRY or added via
+   *    grpc_chttp2_hptbl_add).
+   * 3. If added via grpc_chttp2_hptbl_add, the entry is either static or
+   *    interned.
+   * 4. Both static and interned element slices have non-null refcounts. */
+  *is = grpc_is_refcounted_slice_binary_header(GRPC_MDKEY(elem));
+  set_precomputed_md_idx(p, elem);
+  return GRPC_ERROR_NONE;
+}
+
+/* parse the value string */
+static grpc_error* parse_value_string(grpc_chttp2_hpack_parser* p,
+                                      const uint8_t* cur, const uint8_t* end,
+                                      bool is_binary) {
+  return begin_parse_string(p, cur, end, is_binary ? BINARY_BEGIN : NOT_BINARY,
+                            &p->value);
+}
+
+static grpc_error* parse_value_string_with_indexed_key(
+    grpc_chttp2_hpack_parser* p, const uint8_t* cur, const uint8_t* end) {
+  bool is_binary = false;
+  grpc_error* err = is_binary_indexed_header(p, &is_binary);
+  if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
+  return parse_value_string(p, cur, end, is_binary);
+}
+
+static grpc_error* parse_value_string_with_literal_key(
+    grpc_chttp2_hpack_parser* p, const uint8_t* cur, const uint8_t* end) {
+  return parse_value_string(p, cur, end, is_binary_literal_header(p));
+}
+
+/* "Uninitialized" header parser to save us a branch in on_hdr().  */
+static grpc_error* on_header_uninitialized(void* /*user_data*/,
+                                           grpc_mdelem md) {
+  GRPC_MDELEM_UNREF(md);
+  return GRPC_ERROR_CREATE_FROM_STATIC_STRING("on_header callback not set");
+}
+
+/* PUBLIC INTERFACE */
+
+void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser* p) {
+  p->on_header = on_header_uninitialized;
+  p->on_header_user_data = nullptr;
+  p->state = parse_begin;
+  p->key.data.referenced = grpc_empty_slice();
+  p->key.data.copied.str = nullptr;
+  p->key.data.copied.capacity = 0;
+  p->key.data.copied.length = 0;
+  p->value.data.referenced = grpc_empty_slice();
+  p->value.data.copied.str = nullptr;
+  p->value.data.copied.capacity = 0;
+  p->value.data.copied.length = 0;
+  /* Cached metadata for the current index the parser is handling. This is set
+     to 0 initially, invalidated when the index changes, and invalidated when it
+     is read (by get_precomputed_md_for_idx()). It is set during string parsing,
+     by set_precomputed_md_idx() - which is called by parse_value_string().
+     The goal here is to avoid recomputing the metadata for the index when
+     finishing with a header as well as the initial parse. */
+  p->md_for_index.payload = 0;
+#ifndef NDEBUG
+  /* In debug mode, this ensures that the cached metadata we're reading is in
+   * fact correct for the index we are examining. */
+  p->precomputed_md_index = -1;
+#endif
+  p->dynamic_table_update_allowed = 2;
+  p->last_error = GRPC_ERROR_NONE;
+}
+
+void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser* p) {
+  p->after_prioritization = p->state;
+  p->state = parse_stream_dep0;
+}
+
+void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser* p) {
+  grpc_chttp2_hptbl_destroy(&p->table);
+  GRPC_ERROR_UNREF(p->last_error);
+  grpc_slice_unref_internal(p->key.data.referenced);
+  grpc_slice_unref_internal(p->value.data.referenced);
+  gpr_free(p->key.data.copied.str);
+  gpr_free(p->value.data.copied.str);
+}
+
+grpc_error* grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser* p,
+                                           const grpc_slice& slice) {
+/* max number of bytes to parse at a time... limits call stack depth on
+ * compilers without TCO */
+#define MAX_PARSE_LENGTH 1024
+  p->current_slice_refcount = slice.refcount;
+  const uint8_t* start = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* end = GRPC_SLICE_END_PTR(slice);
+  grpc_error* error = GRPC_ERROR_NONE;
+  while (start != end && error == GRPC_ERROR_NONE) {
+    const uint8_t* target = start + GPR_MIN(MAX_PARSE_LENGTH, end - start);
+    error = p->state(p, start, target);
+    start = target;
+  }
+  p->current_slice_refcount = nullptr;
+  return error;
+}
+
+typedef void (*maybe_complete_func_type)(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s);
+static const maybe_complete_func_type maybe_complete_funcs[] = {
+    grpc_chttp2_maybe_complete_recv_initial_metadata,
+    grpc_chttp2_maybe_complete_recv_trailing_metadata};
+
+static void force_client_rst_stream(void* sp, grpc_error* /*error*/) {
+  grpc_chttp2_stream* s = static_cast<grpc_chttp2_stream*>(sp);
+  grpc_chttp2_transport* t = s->t;
+  if (!s->write_closed) {
+    grpc_chttp2_add_rst_stream_to_next_write(t, s->id, GRPC_HTTP2_NO_ERROR,
+                                             &s->stats.outgoing);
+    grpc_chttp2_initiate_write(t, GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM);
+    grpc_chttp2_mark_stream_closed(t, s, true, true, GRPC_ERROR_NONE);
+  }
+  GRPC_CHTTP2_STREAM_UNREF(s, "final_rst");
+}
+
+static void parse_stream_compression_md(grpc_chttp2_transport* /*t*/,
+                                        grpc_chttp2_stream* s,
+                                        grpc_metadata_batch* initial_metadata) {
+  if (initial_metadata->idx.named.content_encoding == nullptr ||
+      grpc_stream_compression_method_parse(
+          GRPC_MDVALUE(initial_metadata->idx.named.content_encoding->md), false,
+          &s->stream_decompression_method) == 0) {
+    s->stream_decompression_method =
+        GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+  }
+
+  if (s->stream_decompression_method !=
+      GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS) {
+    s->stream_decompression_ctx = nullptr;
+    grpc_slice_buffer_init(&s->decompressed_data_buffer);
+  }
+}
+
+grpc_error* grpc_chttp2_header_parser_parse(void* hpack_parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s,
+                                            const grpc_slice& slice,
+                                            int is_last) {
+  GPR_TIMER_SCOPE("grpc_chttp2_header_parser_parse", 0);
+  grpc_chttp2_hpack_parser* parser =
+      static_cast<grpc_chttp2_hpack_parser*>(hpack_parser);
+  if (s != nullptr) {
+    s->stats.incoming.header_bytes += GRPC_SLICE_LENGTH(slice);
+  }
+  grpc_error* error = grpc_chttp2_hpack_parser_parse(parser, slice);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+  if (is_last) {
+    if (parser->is_boundary && parser->state != parse_begin) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "end of header frame not aligned with a hpack record boundary");
+    }
+    /* need to check for null stream: this can occur if we receive an invalid
+       stream id on a header */
+    if (s != nullptr) {
+      if (parser->is_boundary) {
+        if (s->header_frames_received == GPR_ARRAY_SIZE(s->metadata_buffer)) {
+          return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+              "Too many trailer frames");
+        }
+        /* Process stream compression md element if it exists */
+        if (s->header_frames_received ==
+            0) { /* Only acts on initial metadata */
+          parse_stream_compression_md(t, s, &s->metadata_buffer[0].batch);
+        }
+        s->published_metadata[s->header_frames_received] =
+            GRPC_METADATA_PUBLISHED_FROM_WIRE;
+        maybe_complete_funcs[s->header_frames_received](t, s);
+        s->header_frames_received++;
+      }
+      if (parser->is_eof) {
+        if (t->is_client && !s->write_closed) {
+          /* server eof ==> complete closure; we may need to forcefully close
+             the stream. Wait until the combiner lock is ready to be released
+             however -- it might be that we receive a RST_STREAM following this
+             and can avoid the extra write */
+          GRPC_CHTTP2_STREAM_REF(s, "final_rst");
+          t->combiner->FinallyRun(
+              GRPC_CLOSURE_CREATE(force_client_rst_stream, s, nullptr),
+              GRPC_ERROR_NONE);
+        }
+        grpc_chttp2_mark_stream_closed(t, s, true, false, GRPC_ERROR_NONE);
+      }
+    }
+    parser->on_header = on_header_uninitialized;
+    parser->on_header_user_data = nullptr;
+    parser->is_boundary = 0xde;
+    parser->is_eof = 0xde;
+    parser->dynamic_table_update_allowed = 2;
+  }
+  return GRPC_ERROR_NONE;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.h
new file mode 100644
index 0000000..eb90568
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_parser.h	
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_table.h"
+#include "src/core/lib/transport/metadata.h"
+
+typedef struct grpc_chttp2_hpack_parser grpc_chttp2_hpack_parser;
+
+typedef grpc_error* (*grpc_chttp2_hpack_parser_state)(
+    grpc_chttp2_hpack_parser* p, const uint8_t* beg, const uint8_t* end);
+
+typedef struct {
+  bool copied;
+  struct {
+    grpc_slice referenced;
+    struct {
+      char* str;
+      uint32_t length;
+      uint32_t capacity;
+    } copied;
+  } data;
+} grpc_chttp2_hpack_parser_string;
+
+struct grpc_chttp2_hpack_parser {
+  /* user specified callback for each header output */
+  grpc_error* (*on_header)(void* user_data, grpc_mdelem md);
+  void* on_header_user_data;
+
+  grpc_error* last_error;
+
+  /* current parse state - or a function that implements it */
+  grpc_chttp2_hpack_parser_state state;
+  /* future states dependent on the opening op code */
+  const grpc_chttp2_hpack_parser_state* next_state;
+  /* what to do after skipping prioritization data */
+  grpc_chttp2_hpack_parser_state after_prioritization;
+  /* the refcount of the slice that we're currently parsing */
+  grpc_slice_refcount* current_slice_refcount;
+  /* the value we're currently parsing */
+  union {
+    uint32_t* value;
+    grpc_chttp2_hpack_parser_string* str;
+  } parsing;
+  /* string parameters for each chunk */
+  grpc_chttp2_hpack_parser_string key;
+  grpc_chttp2_hpack_parser_string value;
+  /* parsed index */
+  uint32_t index;
+  /* When we parse a value string, we determine the metadata element for a
+     specific index, which we need again when we're finishing up with that
+     header. To avoid calculating the metadata element for that index a second
+     time at that stage, we cache (and invalidate) the element here. */
+  grpc_mdelem md_for_index;
+#ifndef NDEBUG
+  int64_t precomputed_md_index;
+#endif
+  /* length of source bytes for the currently parsing string */
+  uint32_t strlen;
+  /* number of source bytes read for the currently parsing string */
+  uint32_t strgot;
+  /* huffman decoding state */
+  int16_t huff_state;
+  /* is the string being decoded binary? */
+  uint8_t binary;
+  /* is the current string huffman encoded? */
+  uint8_t huff;
+  /* is a dynamic table update allowed? */
+  uint8_t dynamic_table_update_allowed;
+  /* set by higher layers, used by grpc_chttp2_header_parser_parse to signal
+     it should append a metadata boundary at the end of frame */
+  uint8_t is_boundary;
+  uint8_t is_eof;
+  uint32_t base64_buffer;
+
+  /* hpack table */
+  grpc_chttp2_hptbl table;
+};
+
+void grpc_chttp2_hpack_parser_init(grpc_chttp2_hpack_parser* p);
+void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser* p);
+
+void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser* p);
+
+grpc_error* grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser* p,
+                                           const grpc_slice& slice);
+
+/* wraps grpc_chttp2_hpack_parser_parse to provide a frame level parser for
+   the transport */
+grpc_error* grpc_chttp2_header_parser_parse(void* hpack_parser,
+                                            grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s,
+                                            const grpc_slice& slice,
+                                            int is_last);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.cc
new file mode 100644
index 0000000..be03110
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.cc	
@@ -0,0 +1,246 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/hpack_table.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/validate_metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+extern grpc_core::TraceFlag grpc_http_trace;
+
+void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl* tbl) {
+  size_t i;
+  for (i = 0; i < tbl->num_ents; i++) {
+    GRPC_MDELEM_UNREF(tbl->ents[(tbl->first_ent + i) % tbl->cap_entries]);
+  }
+  gpr_free(tbl->ents);
+  tbl->ents = nullptr;
+}
+
+template <bool take_ref>
+static grpc_mdelem lookup_dynamic_index(const grpc_chttp2_hptbl* tbl,
+                                        uint32_t tbl_index) {
+  /* Not static - find the value in the list of valid entries */
+  tbl_index -= (GRPC_CHTTP2_LAST_STATIC_ENTRY + 1);
+  if (tbl_index < tbl->num_ents) {
+    uint32_t offset =
+        (tbl->num_ents - 1u - tbl_index + tbl->first_ent) % tbl->cap_entries;
+    grpc_mdelem md = tbl->ents[offset];
+    if (take_ref) {
+      GRPC_MDELEM_REF(md);
+    }
+    return md;
+  }
+  /* Invalid entry: return error */
+  return GRPC_MDNULL;
+}
+
+grpc_mdelem grpc_chttp2_hptbl_lookup_dynamic_index(const grpc_chttp2_hptbl* tbl,
+                                                   uint32_t tbl_index) {
+  return lookup_dynamic_index<false>(tbl, tbl_index);
+}
+
+grpc_mdelem grpc_chttp2_hptbl_lookup_ref_dynamic_index(
+    const grpc_chttp2_hptbl* tbl, uint32_t tbl_index) {
+  return lookup_dynamic_index<true>(tbl, tbl_index);
+}
+
+/* Evict one element from the table */
+static void evict1(grpc_chttp2_hptbl* tbl) {
+  grpc_mdelem first_ent = tbl->ents[tbl->first_ent];
+  size_t elem_bytes = GRPC_SLICE_LENGTH(GRPC_MDKEY(first_ent)) +
+                      GRPC_SLICE_LENGTH(GRPC_MDVALUE(first_ent)) +
+                      GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+  GPR_ASSERT(elem_bytes <= tbl->mem_used);
+  tbl->mem_used -= static_cast<uint32_t>(elem_bytes);
+  tbl->first_ent = ((tbl->first_ent + 1) % tbl->cap_entries);
+  tbl->num_ents--;
+  GRPC_MDELEM_UNREF(first_ent);
+}
+
+static void rebuild_ents(grpc_chttp2_hptbl* tbl, uint32_t new_cap) {
+  grpc_mdelem* ents =
+      static_cast<grpc_mdelem*>(gpr_malloc(sizeof(*ents) * new_cap));
+  uint32_t i;
+
+  for (i = 0; i < tbl->num_ents; i++) {
+    ents[i] = tbl->ents[(tbl->first_ent + i) % tbl->cap_entries];
+  }
+  gpr_free(tbl->ents);
+  tbl->ents = ents;
+  tbl->cap_entries = new_cap;
+  tbl->first_ent = 0;
+}
+
+void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl* tbl,
+                                     uint32_t max_bytes) {
+  if (tbl->max_bytes == max_bytes) {
+    return;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "Update hpack parser max size to %d", max_bytes);
+  }
+  while (tbl->mem_used > max_bytes) {
+    evict1(tbl);
+  }
+  tbl->max_bytes = max_bytes;
+}
+
+grpc_error* grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl* tbl,
+                                                     uint32_t bytes) {
+  if (tbl->current_table_bytes == bytes) {
+    return GRPC_ERROR_NONE;
+  }
+  if (bytes > tbl->max_bytes) {
+    char* msg;
+    gpr_asprintf(&msg,
+                 "Attempt to make hpack table %d bytes when max is %d bytes",
+                 bytes, tbl->max_bytes);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    gpr_log(GPR_INFO, "Update hpack parser table size to %d", bytes);
+  }
+  while (tbl->mem_used > bytes) {
+    evict1(tbl);
+  }
+  tbl->current_table_bytes = bytes;
+  tbl->max_entries = grpc_chttp2_hptbl::entries_for_bytes(bytes);
+  if (tbl->max_entries > tbl->cap_entries) {
+    rebuild_ents(tbl, GPR_MAX(tbl->max_entries, 2 * tbl->cap_entries));
+  } else if (tbl->max_entries < tbl->cap_entries / 3) {
+    uint32_t new_cap = GPR_MAX(tbl->max_entries, 16u);
+    if (new_cap != tbl->cap_entries) {
+      rebuild_ents(tbl, new_cap);
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_chttp2_hptbl_add(grpc_chttp2_hptbl* tbl, grpc_mdelem md) {
+  /* determine how many bytes of buffer this entry represents */
+  size_t elem_bytes = GRPC_SLICE_LENGTH(GRPC_MDKEY(md)) +
+                      GRPC_SLICE_LENGTH(GRPC_MDVALUE(md)) +
+                      GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+
+  if (tbl->current_table_bytes > tbl->max_bytes) {
+    char* msg;
+    gpr_asprintf(
+        &msg,
+        "HPACK max table size reduced to %d but not reflected by hpack "
+        "stream (still at %d)",
+        tbl->max_bytes, tbl->current_table_bytes);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+
+  /* we can't add elements bigger than the max table size */
+  if (elem_bytes > tbl->current_table_bytes) {
+    /* HPACK draft 10 section 4.4 states:
+     * If the size of the new entry is less than or equal to the maximum
+     * size, that entry is added to the table.  It is not an error to
+     * attempt to add an entry that is larger than the maximum size; an
+     * attempt to add an entry larger than the entire table causes
+     * the table
+     * to be emptied of all existing entries, and results in an
+     * empty table.
+     */
+    while (tbl->num_ents) {
+      evict1(tbl);
+    }
+    return GRPC_ERROR_NONE;
+  }
+
+  /* evict entries to ensure no overflow */
+  while (elem_bytes >
+         static_cast<size_t>(tbl->current_table_bytes) - tbl->mem_used) {
+    evict1(tbl);
+  }
+
+  /* copy the finalized entry in */
+  tbl->ents[(tbl->first_ent + tbl->num_ents) % tbl->cap_entries] =
+      GRPC_MDELEM_REF(md);
+
+  /* update accounting values */
+  tbl->num_ents++;
+  tbl->mem_used += static_cast<uint32_t>(elem_bytes);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find(
+    const grpc_chttp2_hptbl* tbl, grpc_mdelem md) {
+  grpc_chttp2_hptbl_find_result r = {0, 0};
+  uint32_t i;
+
+  /* See if the string is in the static table */
+  for (i = 0; i < GRPC_CHTTP2_LAST_STATIC_ENTRY; i++) {
+    grpc_mdelem ent = grpc_static_mdelem_manifested()[i];
+    if (!grpc_slice_eq(GRPC_MDKEY(md), GRPC_MDKEY(ent))) continue;
+    r.index = i + 1u;
+    r.has_value = grpc_slice_eq(GRPC_MDVALUE(md), GRPC_MDVALUE(ent));
+    if (r.has_value) return r;
+  }
+
+  /* Scan the dynamic table */
+  for (i = 0; i < tbl->num_ents; i++) {
+    uint32_t idx = static_cast<uint32_t>(tbl->num_ents - i +
+                                         GRPC_CHTTP2_LAST_STATIC_ENTRY);
+    grpc_mdelem ent = tbl->ents[(tbl->first_ent + i) % tbl->cap_entries];
+    if (!grpc_slice_eq(GRPC_MDKEY(md), GRPC_MDKEY(ent))) continue;
+    r.index = idx;
+    r.has_value = grpc_slice_eq(GRPC_MDVALUE(md), GRPC_MDVALUE(ent));
+    if (r.has_value) return r;
+  }
+
+  return r;
+}
+
+static size_t get_base64_encoded_size(size_t raw_length) {
+  static const uint8_t tail_xtra[3] = {0, 2, 3};
+  return raw_length / 3 * 4 + tail_xtra[raw_length % 3];
+}
+
+size_t grpc_chttp2_get_size_in_hpack_table(grpc_mdelem elem,
+                                           bool use_true_binary_metadata) {
+  const uint8_t* key_buf = GRPC_SLICE_START_PTR(GRPC_MDKEY(elem));
+  size_t key_len = GRPC_SLICE_LENGTH(GRPC_MDKEY(elem));
+  size_t overhead_and_key = 32 + key_len;
+  size_t value_len = GRPC_SLICE_LENGTH(GRPC_MDVALUE(elem));
+  if (grpc_key_is_binary_header(key_buf, key_len)) {
+    return overhead_and_key + (use_true_binary_metadata
+                                   ? value_len + 1
+                                   : get_base64_encoded_size(value_len));
+  } else {
+    return overhead_and_key + value_len;
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.h
new file mode 100644
index 0000000..5a6c739
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/hpack_table.h	
@@ -0,0 +1,148 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+/* HPACK header table */
+
+/* last index in the static table */
+#define GRPC_CHTTP2_LAST_STATIC_ENTRY 61
+
+/* Initial table size as per the spec */
+#define GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE 4096
+/* Maximum table size that we'll use */
+#define GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE
+/* Per entry overhead bytes as per the spec */
+#define GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD 32
+#if 0
+/* Maximum number of entries we could possibly fit in the table, given defined
+   overheads */
+#define GRPC_CHTTP2_MAX_TABLE_COUNT                                            \
+  ((GRPC_CHTTP2_MAX_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) / \
+   GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD)
+#endif
+
+/* hpack decoder table */
+struct grpc_chttp2_hptbl {
+  static uint32_t entries_for_bytes(uint32_t bytes) {
+    return (bytes + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD - 1) /
+           GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+  }
+  static constexpr uint32_t kInitialCapacity =
+      (GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE + GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD -
+       1) /
+      GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
+
+  grpc_chttp2_hptbl() {
+    GPR_DEBUG_ASSERT(!ents);
+    constexpr uint32_t AllocSize = sizeof(*ents) * kInitialCapacity;
+    ents = static_cast<grpc_mdelem*>(gpr_malloc(AllocSize));
+    memset(ents, 0, AllocSize);
+  }
+
+  /* the first used entry in ents */
+  uint32_t first_ent = 0;
+  /* how many entries are in the table */
+  uint32_t num_ents = 0;
+  /* the amount of memory used by the table, according to the hpack algorithm */
+  uint32_t mem_used = 0;
+  /* the max memory allowed to be used by the table, according to the hpack
+     algorithm */
+  uint32_t max_bytes = GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE;
+  /* the currently agreed size of the table, according to the hpack algorithm */
+  uint32_t current_table_bytes = GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE;
+  /* Maximum number of entries we could possibly fit in the table, given defined
+     overheads */
+  uint32_t max_entries = kInitialCapacity;
+  /* Number of entries allocated in ents */
+  uint32_t cap_entries = kInitialCapacity;
+  /* a circular buffer of headers - this is stored in the opposite order to
+     what hpack specifies, in order to simplify table management a little...
+     meaning lookups need to SUBTRACT from the end position */
+  grpc_mdelem* ents = nullptr;
+};
+
+void grpc_chttp2_hptbl_destroy(grpc_chttp2_hptbl* tbl);
+void grpc_chttp2_hptbl_set_max_bytes(grpc_chttp2_hptbl* tbl,
+                                     uint32_t max_bytes);
+grpc_error* grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl* tbl,
+                                                     uint32_t bytes);
+
+/* lookup a table entry based on its hpack index */
+grpc_mdelem grpc_chttp2_hptbl_lookup_dynamic_index(const grpc_chttp2_hptbl* tbl,
+                                                   uint32_t tbl_index);
+grpc_mdelem grpc_chttp2_hptbl_lookup_ref_dynamic_index(
+    const grpc_chttp2_hptbl* tbl, uint32_t tbl_index);
+template <bool take_ref = false>
+inline grpc_mdelem grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl* tbl,
+                                            uint32_t index) {
+  /* Static table comes first, just return an entry from it.
+     NB: This imposes the constraint that the first
+     GRPC_CHTTP2_LAST_STATIC_ENTRY entries in the core static metadata table
+     must follow the hpack standard. If that changes, we *must* not rely on
+     reading the core static metadata table here; at that point we'd need our
+     own singleton static metadata in the correct order. */
+  if (index <= GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+    return grpc_static_mdelem_manifested()[index - 1];
+  } else {
+    if (take_ref) {
+      return grpc_chttp2_hptbl_lookup_ref_dynamic_index(tbl, index);
+    } else {
+      return grpc_chttp2_hptbl_lookup_dynamic_index(tbl, index);
+    }
+  }
+}
+/* add a table entry to the index */
+grpc_error* grpc_chttp2_hptbl_add(grpc_chttp2_hptbl* tbl,
+                                  grpc_mdelem md) GRPC_MUST_USE_RESULT;
+
+size_t grpc_chttp2_get_size_in_hpack_table(grpc_mdelem elem,
+                                           bool use_true_binary_metadata);
+
+/* Returns the static hpack table index that corresponds to /a elem. Returns 0
+  if /a elem is not statically stored or if it is not in the static hpack
+  table */
+inline uintptr_t grpc_chttp2_get_static_hpack_table_index(grpc_mdelem md) {
+  uintptr_t index =
+      reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(md)) -
+      grpc_static_mdelem_table();
+  if (index < GRPC_CHTTP2_LAST_STATIC_ENTRY) {
+    return index + 1;  // Hpack static metadata element indices start at 1
+  }
+  return 0;
+}
+
+/* Find a key/value pair in the table... returns the index in the table of the
+   most similar entry, or 0 if the value was not found */
+typedef struct {
+  uint32_t index;
+  int has_value;
+} grpc_chttp2_hptbl_find_result;
+grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find(
+    const grpc_chttp2_hptbl* tbl, grpc_mdelem md);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.cc
new file mode 100644
index 0000000..294ee8e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.cc	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_settings_ids.py
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+const uint16_t grpc_setting_id_to_wire_id[] = {1, 2, 3, 4, 5, 6, 65027};
+
+bool grpc_wire_id_to_setting_id(uint32_t wire_id, grpc_chttp2_setting_id* out) {
+  uint32_t i = wire_id - 1;
+  uint32_t x = i % 256;
+  uint32_t y = i / 256;
+  uint32_t h = x;
+  switch (y) {
+    case 254:
+      h += 4;
+      break;
+  }
+  *out = static_cast<grpc_chttp2_setting_id>(h);
+  return h < GPR_ARRAY_SIZE(grpc_setting_id_to_wire_id) &&
+         grpc_setting_id_to_wire_id[h] == wire_id;
+}
+
+const grpc_chttp2_setting_parameters
+    grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS] = {
+        {"HEADER_TABLE_SIZE", 4096u, 0u, 4294967295u,
+         GRPC_CHTTP2_CLAMP_INVALID_VALUE, GRPC_HTTP2_PROTOCOL_ERROR},
+        {"ENABLE_PUSH", 1u, 0u, 1u, GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE,
+         GRPC_HTTP2_PROTOCOL_ERROR},
+        {"MAX_CONCURRENT_STREAMS", 4294967295u, 0u, 4294967295u,
+         GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, GRPC_HTTP2_PROTOCOL_ERROR},
+        {"INITIAL_WINDOW_SIZE", 65535u, 0u, 2147483647u,
+         GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE,
+         GRPC_HTTP2_FLOW_CONTROL_ERROR},
+        {"MAX_FRAME_SIZE", 16384u, 16384u, 16777215u,
+         GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, GRPC_HTTP2_PROTOCOL_ERROR},
+        {"MAX_HEADER_LIST_SIZE", 16777216u, 0u, 16777216u,
+         GRPC_CHTTP2_CLAMP_INVALID_VALUE, GRPC_HTTP2_PROTOCOL_ERROR},
+        {"GRPC_ALLOW_TRUE_BINARY_METADATA", 0u, 0u, 1u,
+         GRPC_CHTTP2_CLAMP_INVALID_VALUE, GRPC_HTTP2_PROTOCOL_ERROR},
+};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.h
new file mode 100644
index 0000000..07ce062
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/http2_settings.h	
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_settings_ids.py
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef enum {
+  GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE = 0,               /* wire id 1 */
+  GRPC_CHTTP2_SETTINGS_ENABLE_PUSH = 1,                     /* wire id 2 */
+  GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 2,          /* wire id 3 */
+  GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE = 3,             /* wire id 4 */
+  GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE = 4,                  /* wire id 5 */
+  GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 5,            /* wire id 6 */
+  GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA = 6, /* wire id 65027 */
+} grpc_chttp2_setting_id;
+
+#define GRPC_CHTTP2_NUM_SETTINGS 7
+
+extern const uint16_t grpc_setting_id_to_wire_id[];
+
+bool grpc_wire_id_to_setting_id(uint32_t wire_id, grpc_chttp2_setting_id* out);
+
+typedef enum {
+  GRPC_CHTTP2_CLAMP_INVALID_VALUE,
+  GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE
+} grpc_chttp2_invalid_value_behavior;
+
+typedef struct {
+  const char* name;
+  uint32_t default_value;
+  uint32_t min_value;
+  uint32_t max_value;
+  grpc_chttp2_invalid_value_behavior invalid_value_behavior;
+  uint32_t error_value;
+} grpc_chttp2_setting_parameters;
+
+extern const grpc_chttp2_setting_parameters
+    grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS];
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HTTP2_SETTINGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.cc
new file mode 100644
index 0000000..813e4c9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.cc	
@@ -0,0 +1,92 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/huffsyms.h"
+
+/* Constants pulled from the HPACK spec, and converted to C using the vim
+   command:
+   :%s/.*   \([0-9a-f]\+\)  \[ *\([0-9]\+\)\]/{0x\1, \2},/g */
+const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS] = {
+    {0x1ff8, 13},     {0x7fffd8, 23},   {0xfffffe2, 28},  {0xfffffe3, 28},
+    {0xfffffe4, 28},  {0xfffffe5, 28},  {0xfffffe6, 28},  {0xfffffe7, 28},
+    {0xfffffe8, 28},  {0xffffea, 24},   {0x3ffffffc, 30}, {0xfffffe9, 28},
+    {0xfffffea, 28},  {0x3ffffffd, 30}, {0xfffffeb, 28},  {0xfffffec, 28},
+    {0xfffffed, 28},  {0xfffffee, 28},  {0xfffffef, 28},  {0xffffff0, 28},
+    {0xffffff1, 28},  {0xffffff2, 28},  {0x3ffffffe, 30}, {0xffffff3, 28},
+    {0xffffff4, 28},  {0xffffff5, 28},  {0xffffff6, 28},  {0xffffff7, 28},
+    {0xffffff8, 28},  {0xffffff9, 28},  {0xffffffa, 28},  {0xffffffb, 28},
+    {0x14, 6},        {0x3f8, 10},      {0x3f9, 10},      {0xffa, 12},
+    {0x1ff9, 13},     {0x15, 6},        {0xf8, 8},        {0x7fa, 11},
+    {0x3fa, 10},      {0x3fb, 10},      {0xf9, 8},        {0x7fb, 11},
+    {0xfa, 8},        {0x16, 6},        {0x17, 6},        {0x18, 6},
+    {0x0, 5},         {0x1, 5},         {0x2, 5},         {0x19, 6},
+    {0x1a, 6},        {0x1b, 6},        {0x1c, 6},        {0x1d, 6},
+    {0x1e, 6},        {0x1f, 6},        {0x5c, 7},        {0xfb, 8},
+    {0x7ffc, 15},     {0x20, 6},        {0xffb, 12},      {0x3fc, 10},
+    {0x1ffa, 13},     {0x21, 6},        {0x5d, 7},        {0x5e, 7},
+    {0x5f, 7},        {0x60, 7},        {0x61, 7},        {0x62, 7},
+    {0x63, 7},        {0x64, 7},        {0x65, 7},        {0x66, 7},
+    {0x67, 7},        {0x68, 7},        {0x69, 7},        {0x6a, 7},
+    {0x6b, 7},        {0x6c, 7},        {0x6d, 7},        {0x6e, 7},
+    {0x6f, 7},        {0x70, 7},        {0x71, 7},        {0x72, 7},
+    {0xfc, 8},        {0x73, 7},        {0xfd, 8},        {0x1ffb, 13},
+    {0x7fff0, 19},    {0x1ffc, 13},     {0x3ffc, 14},     {0x22, 6},
+    {0x7ffd, 15},     {0x3, 5},         {0x23, 6},        {0x4, 5},
+    {0x24, 6},        {0x5, 5},         {0x25, 6},        {0x26, 6},
+    {0x27, 6},        {0x6, 5},         {0x74, 7},        {0x75, 7},
+    {0x28, 6},        {0x29, 6},        {0x2a, 6},        {0x7, 5},
+    {0x2b, 6},        {0x76, 7},        {0x2c, 6},        {0x8, 5},
+    {0x9, 5},         {0x2d, 6},        {0x77, 7},        {0x78, 7},
+    {0x79, 7},        {0x7a, 7},        {0x7b, 7},        {0x7ffe, 15},
+    {0x7fc, 11},      {0x3ffd, 14},     {0x1ffd, 13},     {0xffffffc, 28},
+    {0xfffe6, 20},    {0x3fffd2, 22},   {0xfffe7, 20},    {0xfffe8, 20},
+    {0x3fffd3, 22},   {0x3fffd4, 22},   {0x3fffd5, 22},   {0x7fffd9, 23},
+    {0x3fffd6, 22},   {0x7fffda, 23},   {0x7fffdb, 23},   {0x7fffdc, 23},
+    {0x7fffdd, 23},   {0x7fffde, 23},   {0xffffeb, 24},   {0x7fffdf, 23},
+    {0xffffec, 24},   {0xffffed, 24},   {0x3fffd7, 22},   {0x7fffe0, 23},
+    {0xffffee, 24},   {0x7fffe1, 23},   {0x7fffe2, 23},   {0x7fffe3, 23},
+    {0x7fffe4, 23},   {0x1fffdc, 21},   {0x3fffd8, 22},   {0x7fffe5, 23},
+    {0x3fffd9, 22},   {0x7fffe6, 23},   {0x7fffe7, 23},   {0xffffef, 24},
+    {0x3fffda, 22},   {0x1fffdd, 21},   {0xfffe9, 20},    {0x3fffdb, 22},
+    {0x3fffdc, 22},   {0x7fffe8, 23},   {0x7fffe9, 23},   {0x1fffde, 21},
+    {0x7fffea, 23},   {0x3fffdd, 22},   {0x3fffde, 22},   {0xfffff0, 24},
+    {0x1fffdf, 21},   {0x3fffdf, 22},   {0x7fffeb, 23},   {0x7fffec, 23},
+    {0x1fffe0, 21},   {0x1fffe1, 21},   {0x3fffe0, 22},   {0x1fffe2, 21},
+    {0x7fffed, 23},   {0x3fffe1, 22},   {0x7fffee, 23},   {0x7fffef, 23},
+    {0xfffea, 20},    {0x3fffe2, 22},   {0x3fffe3, 22},   {0x3fffe4, 22},
+    {0x7ffff0, 23},   {0x3fffe5, 22},   {0x3fffe6, 22},   {0x7ffff1, 23},
+    {0x3ffffe0, 26},  {0x3ffffe1, 26},  {0xfffeb, 20},    {0x7fff1, 19},
+    {0x3fffe7, 22},   {0x7ffff2, 23},   {0x3fffe8, 22},   {0x1ffffec, 25},
+    {0x3ffffe2, 26},  {0x3ffffe3, 26},  {0x3ffffe4, 26},  {0x7ffffde, 27},
+    {0x7ffffdf, 27},  {0x3ffffe5, 26},  {0xfffff1, 24},   {0x1ffffed, 25},
+    {0x7fff2, 19},    {0x1fffe3, 21},   {0x3ffffe6, 26},  {0x7ffffe0, 27},
+    {0x7ffffe1, 27},  {0x3ffffe7, 26},  {0x7ffffe2, 27},  {0xfffff2, 24},
+    {0x1fffe4, 21},   {0x1fffe5, 21},   {0x3ffffe8, 26},  {0x3ffffe9, 26},
+    {0xffffffd, 28},  {0x7ffffe3, 27},  {0x7ffffe4, 27},  {0x7ffffe5, 27},
+    {0xfffec, 20},    {0xfffff3, 24},   {0xfffed, 20},    {0x1fffe6, 21},
+    {0x3fffe9, 22},   {0x1fffe7, 21},   {0x1fffe8, 21},   {0x7ffff3, 23},
+    {0x3fffea, 22},   {0x3fffeb, 22},   {0x1ffffee, 25},  {0x1ffffef, 25},
+    {0xfffff4, 24},   {0xfffff5, 24},   {0x3ffffea, 26},  {0x7ffff4, 23},
+    {0x3ffffeb, 26},  {0x7ffffe6, 27},  {0x3ffffec, 26},  {0x3ffffed, 26},
+    {0x7ffffe7, 27},  {0x7ffffe8, 27},  {0x7ffffe9, 27},  {0x7ffffea, 27},
+    {0x7ffffeb, 27},  {0xffffffe, 28},  {0x7ffffec, 27},  {0x7ffffed, 27},
+    {0x7ffffee, 27},  {0x7ffffef, 27},  {0x7fffff0, 27},  {0x3ffffee, 26},
+    {0x3fffffff, 30},
+};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.h
new file mode 100644
index 0000000..2e2a5da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/huffsyms.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H
+
+/* HPACK static huffman table */
+
+#define GRPC_CHTTP2_NUM_HUFFSYMS 257
+
+typedef struct {
+  unsigned bits;
+  unsigned length;
+} grpc_chttp2_huffsym;
+
+extern const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS];
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HUFFSYMS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.cc
new file mode 100644
index 0000000..d04630d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.cc	
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
+
+#include <string.h>
+
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+grpc_error* grpc_chttp2_incoming_metadata_buffer_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_mdelem elem) {
+  buffer->size += GRPC_MDELEM_LENGTH(elem);
+  grpc_linked_mdelem* storage;
+  if (buffer->count < buffer->kPreallocatedMDElem) {
+    storage = &buffer->preallocated_mdelems[buffer->count];
+    buffer->count++;
+  } else {
+    storage = static_cast<grpc_linked_mdelem*>(
+        buffer->arena->Alloc(sizeof(grpc_linked_mdelem)));
+  }
+  storage->md = elem;
+  return grpc_metadata_batch_link_tail(&buffer->batch, storage);
+}
+
+grpc_error* grpc_chttp2_incoming_metadata_buffer_replace_or_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_mdelem elem) {
+  for (grpc_linked_mdelem* l = buffer->batch.list.head; l != nullptr;
+       l = l->next) {
+    if (grpc_slice_eq(GRPC_MDKEY(l->md), GRPC_MDKEY(elem))) {
+      GRPC_MDELEM_UNREF(l->md);
+      l->md = elem;
+      return GRPC_ERROR_NONE;
+    }
+  }
+  return grpc_chttp2_incoming_metadata_buffer_add(buffer, elem);
+}
+
+void grpc_chttp2_incoming_metadata_buffer_set_deadline(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_millis deadline) {
+  buffer->batch.deadline = deadline;
+}
+
+void grpc_chttp2_incoming_metadata_buffer_publish(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_metadata_batch* batch) {
+  grpc_metadata_batch_move(&buffer->batch, batch);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.h
new file mode 100644
index 0000000..b63caa1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/incoming_metadata.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport.h"
+
+struct grpc_chttp2_incoming_metadata_buffer {
+  explicit grpc_chttp2_incoming_metadata_buffer(grpc_core::Arena* arena)
+      : arena(arena) {
+    grpc_metadata_batch_init(&batch);
+    batch.deadline = GRPC_MILLIS_INF_FUTURE;
+  }
+  ~grpc_chttp2_incoming_metadata_buffer() {
+    grpc_metadata_batch_destroy(&batch);
+  }
+
+  static constexpr size_t kPreallocatedMDElem = 10;
+
+  grpc_core::Arena* arena;
+  size_t size = 0;   // total size of metadata.
+  size_t count = 0;  // minimum of count of metadata and kPreallocatedMDElem.
+  // These preallocated mdelems are used while count < kPreallocatedMDElem.
+  grpc_linked_mdelem preallocated_mdelems[kPreallocatedMDElem];
+  grpc_metadata_batch batch;
+};
+
+void grpc_chttp2_incoming_metadata_buffer_publish(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_metadata_batch* batch);
+
+grpc_error* grpc_chttp2_incoming_metadata_buffer_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer,
+    grpc_mdelem elem) GRPC_MUST_USE_RESULT;
+grpc_error* grpc_chttp2_incoming_metadata_buffer_replace_or_add(
+    grpc_chttp2_incoming_metadata_buffer* buffer,
+    grpc_mdelem elem) GRPC_MUST_USE_RESULT;
+void grpc_chttp2_incoming_metadata_buffer_set_deadline(
+    grpc_chttp2_incoming_metadata_buffer* buffer, grpc_millis deadline);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INCOMING_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/internal.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/internal.h
new file mode 100644
index 0000000..fa3d882
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/internal.h	
@@ -0,0 +1,871 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include "src/core/ext/transport/chttp2/transport/flow_control.h"
+#include "src/core/ext/transport/chttp2/transport/frame.h"
+#include "src/core/ext/transport/chttp2/transport/frame_data.h"
+#include "src/core/ext/transport/chttp2/transport/frame_goaway.h"
+#include "src/core/ext/transport/chttp2/transport/frame_ping.h"
+#include "src/core/ext/transport/chttp2/transport/frame_rst_stream.h"
+#include "src/core/ext/transport/chttp2/transport/frame_settings.h"
+#include "src/core/ext/transport/chttp2/transport/frame_window_update.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_encoder.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
+#include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
+#include "src/core/ext/transport/chttp2/transport/stream_map.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+namespace grpc_core {
+class ContextList;
+}
+
+/* streams are kept in various linked lists depending on what things need to
+   happen to them... this enum labels each list */
+typedef enum {
+  GRPC_CHTTP2_LIST_WRITABLE,
+  GRPC_CHTTP2_LIST_WRITING,
+  GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT,
+  GRPC_CHTTP2_LIST_STALLED_BY_STREAM,
+  /** streams that are waiting to start because there are too many concurrent
+      streams on the connection */
+  GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY,
+  STREAM_LIST_COUNT /* must be last */
+} grpc_chttp2_stream_list_id;
+
+typedef enum {
+  GRPC_CHTTP2_WRITE_STATE_IDLE,
+  GRPC_CHTTP2_WRITE_STATE_WRITING,
+  GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE,
+} grpc_chttp2_write_state;
+
+typedef enum {
+  GRPC_CHTTP2_OPTIMIZE_FOR_LATENCY,
+  GRPC_CHTTP2_OPTIMIZE_FOR_THROUGHPUT,
+} grpc_chttp2_optimization_target;
+
+typedef enum {
+  GRPC_CHTTP2_PCL_INITIATE = 0,
+  GRPC_CHTTP2_PCL_NEXT,
+  GRPC_CHTTP2_PCL_INFLIGHT,
+  GRPC_CHTTP2_PCL_COUNT /* must be last */
+} grpc_chttp2_ping_closure_list;
+
+typedef enum {
+  GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE,
+  GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT,
+  GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API,
+  GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE,
+  GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM,
+} grpc_chttp2_initiate_write_reason;
+
+const char* grpc_chttp2_initiate_write_reason_string(
+    grpc_chttp2_initiate_write_reason reason);
+
+typedef struct {
+  grpc_closure_list lists[GRPC_CHTTP2_PCL_COUNT] = {};
+  uint64_t inflight_id = 0;
+} grpc_chttp2_ping_queue;
+
+typedef struct {
+  int max_pings_without_data;
+  int max_ping_strikes;
+  grpc_millis min_sent_ping_interval_without_data;
+  grpc_millis min_recv_ping_interval_without_data;
+} grpc_chttp2_repeated_ping_policy;
+
+typedef struct {
+  grpc_millis last_ping_sent_time;
+  int pings_before_data_required;
+  grpc_timer delayed_ping_timer;
+  bool is_delayed_ping_timer_set;
+} grpc_chttp2_repeated_ping_state;
+
+typedef struct {
+  grpc_millis last_ping_recv_time;
+  int ping_strikes;
+} grpc_chttp2_server_ping_recv_state;
+
+/* deframer state for the overall http2 stream of bytes */
+typedef enum {
+  /* prefix: one entry per http2 connection prefix byte */
+  GRPC_DTS_CLIENT_PREFIX_0 = 0,
+  GRPC_DTS_CLIENT_PREFIX_1,
+  GRPC_DTS_CLIENT_PREFIX_2,
+  GRPC_DTS_CLIENT_PREFIX_3,
+  GRPC_DTS_CLIENT_PREFIX_4,
+  GRPC_DTS_CLIENT_PREFIX_5,
+  GRPC_DTS_CLIENT_PREFIX_6,
+  GRPC_DTS_CLIENT_PREFIX_7,
+  GRPC_DTS_CLIENT_PREFIX_8,
+  GRPC_DTS_CLIENT_PREFIX_9,
+  GRPC_DTS_CLIENT_PREFIX_10,
+  GRPC_DTS_CLIENT_PREFIX_11,
+  GRPC_DTS_CLIENT_PREFIX_12,
+  GRPC_DTS_CLIENT_PREFIX_13,
+  GRPC_DTS_CLIENT_PREFIX_14,
+  GRPC_DTS_CLIENT_PREFIX_15,
+  GRPC_DTS_CLIENT_PREFIX_16,
+  GRPC_DTS_CLIENT_PREFIX_17,
+  GRPC_DTS_CLIENT_PREFIX_18,
+  GRPC_DTS_CLIENT_PREFIX_19,
+  GRPC_DTS_CLIENT_PREFIX_20,
+  GRPC_DTS_CLIENT_PREFIX_21,
+  GRPC_DTS_CLIENT_PREFIX_22,
+  GRPC_DTS_CLIENT_PREFIX_23,
+  /* frame header byte 0... */
+  /* must follow from the prefix states */
+  GRPC_DTS_FH_0,
+  GRPC_DTS_FH_1,
+  GRPC_DTS_FH_2,
+  GRPC_DTS_FH_3,
+  GRPC_DTS_FH_4,
+  GRPC_DTS_FH_5,
+  GRPC_DTS_FH_6,
+  GRPC_DTS_FH_7,
+  /* ... frame header byte 8 */
+  GRPC_DTS_FH_8,
+  /* inside a http2 frame */
+  GRPC_DTS_FRAME
+} grpc_chttp2_deframe_transport_state;
+
+typedef struct {
+  grpc_chttp2_stream* head;
+  grpc_chttp2_stream* tail;
+} grpc_chttp2_stream_list;
+
+typedef struct {
+  grpc_chttp2_stream* next;
+  grpc_chttp2_stream* prev;
+} grpc_chttp2_stream_link;
+
+/* We keep several sets of connection wide parameters */
+typedef enum {
+  /* The settings our peer has asked for (and we have acked) */
+  GRPC_PEER_SETTINGS = 0,
+  /* The settings we'd like to have */
+  GRPC_LOCAL_SETTINGS,
+  /* The settings we've published to our peer */
+  GRPC_SENT_SETTINGS,
+  /* The settings the peer has acked */
+  GRPC_ACKED_SETTINGS,
+  GRPC_NUM_SETTING_SETS
+} grpc_chttp2_setting_set;
+
+typedef enum {
+  GRPC_CHTTP2_NO_GOAWAY_SEND,
+  GRPC_CHTTP2_GOAWAY_SEND_SCHEDULED,
+  GRPC_CHTTP2_GOAWAY_SENT,
+} grpc_chttp2_sent_goaway_state;
+
+typedef struct grpc_chttp2_write_cb {
+  int64_t call_at_byte;
+  grpc_closure* closure;
+  struct grpc_chttp2_write_cb* next;
+} grpc_chttp2_write_cb;
+
+namespace grpc_core {
+
+class Chttp2IncomingByteStream : public ByteStream {
+ public:
+  Chttp2IncomingByteStream(grpc_chttp2_transport* transport,
+                           grpc_chttp2_stream* stream, uint32_t frame_size,
+                           uint32_t flags);
+
+  void Orphan() override;
+
+  bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+  grpc_error* Pull(grpc_slice* slice) override;
+  void Shutdown(grpc_error* error) override;
+
+  // TODO(roth): When I converted this class to C++, I wanted to make it
+  // inherit from RefCounted or InternallyRefCounted instead of continuing
+  // to use its own custom ref-counting code.  However, that would require
+  // using multiple inheritance, which sucks in general.  And to make matters
+  // worse, it causes problems with our New<> and Delete<> wrappers.
+  // Specifically, unless RefCounted is first in the list of parent classes,
+  // it will see a different value of the address of the object than the one
+  // we actually allocated, in which case gpr_free() will be called on a
+  // different address than the one we got from gpr_malloc(), thus causing a
+  // crash.  Given the fragility of depending on that, as well as a desire to
+  // avoid multiple inheritance in general, I've decided to leave this
+  // alone for now.  We can revisit this once we're able to link against
+  // libc++, at which point we can eliminate New<> and Delete<> and
+  // switch to std::shared_ptr<>.
+  void Ref() { refs_.Ref(); }
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete this;
+    }
+  }
+
+  void PublishError(grpc_error* error);
+
+  grpc_error* Push(const grpc_slice& slice, grpc_slice* slice_out);
+
+  grpc_error* Finished(grpc_error* error, bool reset_on_error);
+
+  uint32_t remaining_bytes() const { return remaining_bytes_; }
+
+ private:
+  static void NextLocked(void* arg, grpc_error* error_ignored);
+  static void OrphanLocked(void* arg, grpc_error* error_ignored);
+
+  void MaybeCreateStreamDecompressionCtx();
+
+  grpc_chttp2_transport* transport_;  // Immutable.
+  grpc_chttp2_stream* stream_;        // Immutable.
+
+  grpc_core::RefCount refs_;
+
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  uint32_t remaining_bytes_;
+
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  struct {
+    grpc_closure closure;
+    size_t max_size_hint;
+    grpc_closure* on_complete;
+  } next_action_;
+  grpc_closure destroy_action_;
+};
+
+}  // namespace grpc_core
+
+typedef enum {
+  GRPC_CHTTP2_KEEPALIVE_STATE_WAITING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_PINGING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_DYING,
+  GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED,
+} grpc_chttp2_keepalive_state;
+
+struct grpc_chttp2_transport {
+  grpc_chttp2_transport(const grpc_channel_args* channel_args,
+                        grpc_endpoint* ep, bool is_client,
+                        grpc_resource_user* resource_user);
+  ~grpc_chttp2_transport();
+
+  grpc_transport base; /* must be first */
+  grpc_core::RefCount refs;
+  grpc_endpoint* ep;
+  char* peer_string;
+
+  grpc_resource_user* resource_user;
+
+  grpc_core::Combiner* combiner;
+
+  grpc_closure* notify_on_receive_settings = nullptr;
+
+  /** write execution state of the transport */
+  grpc_chttp2_write_state write_state = GRPC_CHTTP2_WRITE_STATE_IDLE;
+
+  /** is the transport destroying itself? */
+  uint8_t destroying = false;
+  /** has the upper layer closed the transport? */
+  grpc_error* closed_with_error = GRPC_ERROR_NONE;
+
+  /** is there a read request to the endpoint outstanding? */
+  uint8_t endpoint_reading = 1;
+
+  /** various lists of streams */
+  grpc_chttp2_stream_list lists[STREAM_LIST_COUNT] = {};
+
+  /** maps stream id to grpc_chttp2_stream objects */
+  grpc_chttp2_stream_map stream_map;
+
+  grpc_closure write_action_begin_locked;
+  grpc_closure write_action;
+  grpc_closure write_action_end_locked;
+
+  grpc_closure read_action_locked;
+
+  /** incoming read bytes */
+  grpc_slice_buffer read_buffer;
+
+  /** address to place a newly accepted stream - set and unset by
+      grpc_chttp2_parsing_accept_stream; used by init_stream to
+      publish the accepted server stream */
+  grpc_chttp2_stream** accepting_stream = nullptr;
+
+  /* accept stream callback */
+  void (*accept_stream_cb)(void* user_data, grpc_transport* transport,
+                           const void* server_data);
+  void* accept_stream_cb_user_data;
+
+  /** connectivity tracking */
+  grpc_core::ConnectivityStateTracker state_tracker;
+
+  /** data to write now */
+  grpc_slice_buffer outbuf;
+  /** hpack encoding */
+  grpc_chttp2_hpack_compressor hpack_compressor;
+  /** is this a client? */
+  bool is_client;
+
+  /** data to write next write */
+  grpc_slice_buffer qbuf;
+
+  /** how much data are we willing to buffer when the WRITE_BUFFER_HINT is set?
+   */
+  uint32_t write_buffer_size = grpc_core::chttp2::kDefaultWindow;
+
+  /** Set to a grpc_error object if a goaway frame is received. By default, set
+   * to GRPC_ERROR_NONE */
+  grpc_error* goaway_error = GRPC_ERROR_NONE;
+
+  grpc_chttp2_sent_goaway_state sent_goaway_state = GRPC_CHTTP2_NO_GOAWAY_SEND;
+
+  /** are the local settings dirty and need to be sent? */
+  bool dirtied_local_settings = true;
+  /** have local settings been sent? */
+  bool sent_local_settings = false;
+  /** bitmask of setting indexes to send out
+      Hack: it's common for implementations to assume 65536 bytes initial send
+      window -- this should by rights be 0 */
+  uint32_t force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
+  /** settings values */
+  uint32_t settings[GRPC_NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS];
+
+  /** what is the next stream id to be allocated by this peer?
+      copied to next_stream_id in parsing when parsing commences */
+  uint32_t next_stream_id = 0;
+
+  /** last new stream id */
+  uint32_t last_new_stream_id = 0;
+
+  /** ping queues for various ping insertion points */
+  grpc_chttp2_ping_queue ping_queue = grpc_chttp2_ping_queue();
+  grpc_chttp2_repeated_ping_policy ping_policy;
+  grpc_chttp2_repeated_ping_state ping_state;
+  uint64_t ping_ctr = 0; /* unique id for pings */
+  grpc_closure retry_initiate_ping_locked;
+
+  /** ping acks */
+  size_t ping_ack_count = 0;
+  size_t ping_ack_capacity = 0;
+  uint64_t* ping_acks = nullptr;
+  grpc_chttp2_server_ping_recv_state ping_recv_state;
+
+  /** parser for headers */
+  grpc_chttp2_hpack_parser hpack_parser;
+  /** simple one shot parsers */
+  union {
+    grpc_chttp2_window_update_parser window_update;
+    grpc_chttp2_settings_parser settings;
+    grpc_chttp2_ping_parser ping;
+    grpc_chttp2_rst_stream_parser rst_stream;
+  } simple;
+  /** parser for goaway frames */
+  grpc_chttp2_goaway_parser goaway_parser;
+
+  grpc_core::PolymorphicManualConstructor<
+      grpc_core::chttp2::TransportFlowControlBase,
+      grpc_core::chttp2::TransportFlowControl,
+      grpc_core::chttp2::TransportFlowControlDisabled>
+      flow_control;
+  /** initial window change. This is tracked as we parse settings frames from
+   * the remote peer. If there is a positive delta, then we will make all
+   * streams readable since they may have become unstalled */
+  int64_t initial_window_update = 0;
+
+  /* deframing */
+  grpc_chttp2_deframe_transport_state deframe_state = GRPC_DTS_CLIENT_PREFIX_0;
+  uint8_t incoming_frame_type = 0;
+  uint8_t incoming_frame_flags = 0;
+  uint8_t header_eof = 0;
+  bool is_first_frame = true;
+  uint32_t expect_continuation_stream_id = 0;
+  uint32_t incoming_frame_size = 0;
+  uint32_t incoming_stream_id = 0;
+
+  /* active parser */
+  void* parser_data = nullptr;
+  grpc_chttp2_stream* incoming_stream = nullptr;
+  grpc_error* (*parser)(void* parser_user_data, grpc_chttp2_transport* t,
+                        grpc_chttp2_stream* s, const grpc_slice& slice,
+                        int is_last);
+
+  grpc_chttp2_write_cb* write_cb_pool = nullptr;
+
+  /* bdp estimator */
+  grpc_closure next_bdp_ping_timer_expired_locked;
+  grpc_closure start_bdp_ping_locked;
+  grpc_closure finish_bdp_ping_locked;
+
+  /* if non-NULL, close the transport with this error when writes are finished
+   */
+  grpc_error* close_transport_on_writes_finished = GRPC_ERROR_NONE;
+
+  /* a list of closures to run after writes are finished */
+  grpc_closure_list run_after_write = GRPC_CLOSURE_LIST_INIT;
+
+  /* buffer pool state */
+  /** have we scheduled a benign cleanup? */
+  bool benign_reclaimer_registered = false;
+  /** have we scheduled a destructive cleanup? */
+  bool destructive_reclaimer_registered = false;
+  /** benign cleanup closure */
+  grpc_closure benign_reclaimer_locked;
+  /** destructive cleanup closure */
+  grpc_closure destructive_reclaimer_locked;
+
+  /* next bdp ping timer */
+  bool have_next_bdp_ping_timer = false;
+  /** If start_bdp_ping_locked has been called */
+  bool bdp_ping_started = false;
+  grpc_timer next_bdp_ping_timer;
+
+  /* keep-alive ping support */
+  /** Closure to initialize a keepalive ping */
+  grpc_closure init_keepalive_ping_locked;
+  /** Closure to run when the keepalive ping is sent */
+  grpc_closure start_keepalive_ping_locked;
+  /** Cousure to run when the keepalive ping ack is received */
+  grpc_closure finish_keepalive_ping_locked;
+  /** Closrue to run when the keepalive ping timeouts */
+  grpc_closure keepalive_watchdog_fired_locked;
+  /** timer to initiate ping events */
+  grpc_timer keepalive_ping_timer;
+  /** watchdog to kill the transport when waiting for the keepalive ping */
+  grpc_timer keepalive_watchdog_timer;
+  /** time duration in between pings */
+  grpc_millis keepalive_time;
+  /** grace period for a ping to complete before watchdog kicks in */
+  grpc_millis keepalive_timeout;
+  /** if keepalive pings are allowed when there's no outstanding streams */
+  bool keepalive_permit_without_calls = false;
+  /** If start_keepalive_ping_locked has been called */
+  bool keepalive_ping_started = false;
+  /** keep-alive state machine state */
+  grpc_chttp2_keepalive_state keepalive_state;
+  grpc_core::ContextList* cl = nullptr;
+  grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode> channelz_socket;
+  uint32_t num_messages_in_next_write = 0;
+  /** The number of pending induced frames (SETTINGS_ACK, PINGS_ACK and
+   * RST_STREAM) in the outgoing buffer (t->qbuf). If this number goes beyond
+   * DEFAULT_MAX_PENDING_INDUCED_FRAMES, we pause reading new frames. We would
+   * only continue reading when we are able to write to the socket again,
+   * thereby reducing the number of induced frames. */
+  uint32_t num_pending_induced_frames = 0;
+  bool reading_paused_on_pending_induced_frames = false;
+};
+
+typedef enum {
+  GRPC_METADATA_NOT_PUBLISHED,
+  GRPC_METADATA_SYNTHESIZED_FROM_FAKE,
+  GRPC_METADATA_PUBLISHED_FROM_WIRE,
+  GRPC_METADATA_PUBLISHED_AT_CLOSE
+} grpc_published_metadata_method;
+
+struct grpc_chttp2_stream {
+  grpc_chttp2_stream(grpc_chttp2_transport* t, grpc_stream_refcount* refcount,
+                     const void* server_data, grpc_core::Arena* arena);
+  ~grpc_chttp2_stream();
+
+  void* context;
+  grpc_chttp2_transport* t;
+  grpc_stream_refcount* refcount;
+  // Reffer is a 0-len structure, simply reffing `t` and `refcount` in its ctor
+  // before initializing the rest of the stream, to avoid cache misses. This
+  // field MUST be right after `t` and `refcount`.
+  struct Reffer {
+    explicit Reffer(grpc_chttp2_stream* s);
+  } reffer;
+
+  grpc_closure destroy_stream;
+  grpc_closure* destroy_stream_arg;
+
+  grpc_chttp2_stream_link links[STREAM_LIST_COUNT];
+  uint8_t included[STREAM_LIST_COUNT] = {};
+
+  /** HTTP2 stream id for this stream, or zero if one has not been assigned */
+  uint32_t id = 0;
+
+  /** things the upper layers would like to send */
+  grpc_metadata_batch* send_initial_metadata = nullptr;
+  grpc_closure* send_initial_metadata_finished = nullptr;
+  grpc_metadata_batch* send_trailing_metadata = nullptr;
+  grpc_closure* send_trailing_metadata_finished = nullptr;
+
+  grpc_core::OrphanablePtr<grpc_core::ByteStream> fetching_send_message;
+  uint32_t fetched_send_message_length = 0;
+  grpc_slice fetching_slice = grpc_empty_slice();
+  int64_t next_message_end_offset;
+  int64_t flow_controlled_bytes_written = 0;
+  int64_t flow_controlled_bytes_flowed = 0;
+  grpc_closure complete_fetch_locked;
+  grpc_closure* fetching_send_message_finished = nullptr;
+
+  grpc_metadata_batch* recv_initial_metadata;
+  grpc_closure* recv_initial_metadata_ready = nullptr;
+  bool* trailing_metadata_available = nullptr;
+  grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message;
+  grpc_closure* recv_message_ready = nullptr;
+  grpc_metadata_batch* recv_trailing_metadata;
+  grpc_closure* recv_trailing_metadata_finished = nullptr;
+
+  grpc_transport_stream_stats* collecting_stats = nullptr;
+  grpc_transport_stream_stats stats = grpc_transport_stream_stats();
+
+  /** Is this stream closed for writing. */
+  bool write_closed = false;
+  /** Is this stream reading half-closed. */
+  bool read_closed = false;
+  /** Are all published incoming byte streams closed. */
+  bool all_incoming_byte_streams_finished = false;
+  /** Has this stream seen an error.
+      If true, then pending incoming frames can be thrown away. */
+  bool seen_error = false;
+  /** Are we buffering writes on this stream? If yes, we won't become writable
+      until there's enough queued up in the flow_controlled_buffer */
+  bool write_buffering = false;
+
+  /* have we sent or received the EOS bit? */
+  bool eos_received = false;
+  bool eos_sent = false;
+
+  /** the error that resulted in this stream being read-closed */
+  grpc_error* read_closed_error = GRPC_ERROR_NONE;
+  /** the error that resulted in this stream being write-closed */
+  grpc_error* write_closed_error = GRPC_ERROR_NONE;
+
+  grpc_published_metadata_method published_metadata[2] = {};
+  bool final_metadata_requested = false;
+
+  grpc_chttp2_incoming_metadata_buffer metadata_buffer[2];
+
+  grpc_slice_buffer frame_storage; /* protected by t combiner */
+
+  grpc_closure* on_next = nullptr;  /* protected by t combiner */
+  bool pending_byte_stream = false; /* protected by t combiner */
+  // cached length of buffer to be used by the transport thread in cases where
+  // stream->pending_byte_stream == true. The value is saved before
+  // application threads are allowed to modify
+  // unprocessed_incoming_frames_buffer
+  size_t unprocessed_incoming_frames_buffer_cached_length = 0;
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  grpc_slice_buffer unprocessed_incoming_frames_buffer;
+  grpc_closure reset_byte_stream;
+  grpc_error* byte_stream_error = GRPC_ERROR_NONE; /* protected by t combiner */
+  bool received_last_frame = false;                /* protected by t combiner */
+
+  grpc_millis deadline = GRPC_MILLIS_INF_FUTURE;
+
+  /** saw some stream level error */
+  grpc_error* forced_close_error = GRPC_ERROR_NONE;
+  /** how many header frames have we received? */
+  uint8_t header_frames_received = 0;
+  /** parsing state for data frames */
+  /* Accessed only by transport thread when stream->pending_byte_stream == false
+   * Accessed only by application thread when stream->pending_byte_stream ==
+   * true */
+  grpc_chttp2_data_parser data_parser;
+  /** number of bytes received - reset at end of parse thread execution */
+  int64_t received_bytes = 0;
+
+  bool sent_initial_metadata = false;
+  bool sent_trailing_metadata = false;
+
+  grpc_core::PolymorphicManualConstructor<
+      grpc_core::chttp2::StreamFlowControlBase,
+      grpc_core::chttp2::StreamFlowControl,
+      grpc_core::chttp2::StreamFlowControlDisabled>
+      flow_control;
+
+  grpc_slice_buffer flow_controlled_buffer;
+
+  grpc_chttp2_write_cb* on_flow_controlled_cbs = nullptr;
+  grpc_chttp2_write_cb* on_write_finished_cbs = nullptr;
+  grpc_chttp2_write_cb* finish_after_write = nullptr;
+  size_t sending_bytes = 0;
+
+  /* Stream compression method to be used. */
+  grpc_stream_compression_method stream_compression_method =
+      GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS;
+  /* Stream decompression method to be used. */
+  grpc_stream_compression_method stream_decompression_method =
+      GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+
+  /** Whether bytes stored in unprocessed_incoming_byte_stream is decompressed
+   */
+  bool unprocessed_incoming_frames_decompressed = false;
+  /** Whether the bytes needs to be traced using Fathom */
+  bool traced = false;
+  /** gRPC header bytes that are already decompressed */
+  size_t decompressed_header_bytes = 0;
+  /** Byte counter for number of bytes written */
+  size_t byte_counter = 0;
+
+  /** Amount of uncompressed bytes sent out when compressed_data_buffer is
+   * emptied */
+  size_t uncompressed_data_size;
+  /** Stream compression compress context */
+  grpc_stream_compression_context* stream_compression_ctx;
+  /** Buffer storing data that is compressed but not sent */
+  grpc_slice_buffer compressed_data_buffer;
+
+  /** Stream compression decompress context */
+  grpc_stream_compression_context* stream_decompression_ctx;
+  /** Temporary buffer storing decompressed data.
+   * Initialized, used, and destroyed only when stream uses (non-identity)
+   * compression.
+   */
+  grpc_slice_buffer decompressed_data_buffer;
+};
+
+/** Transport writing call flow:
+    grpc_chttp2_initiate_write() is called anywhere that we know bytes need to
+    go out on the wire.
+    If no other write has been started, a task is enqueued onto our workqueue.
+    When that task executes, it obtains the global lock, and gathers the data
+    to write.
+    The global lock is dropped and we do the syscall to write.
+    After writing, a follow-up check is made to see if another round of writing
+    should be performed.
+
+    The actual call chain is documented in the implementation of this function.
+    */
+void grpc_chttp2_initiate_write(grpc_chttp2_transport* t,
+                                grpc_chttp2_initiate_write_reason reason);
+
+typedef struct {
+  /** are we writing? */
+  bool writing;
+  /** if writing: was it a complete flush (false) or a partial flush (true) */
+  bool partial;
+  /** did we queue any completions as part of beginning the write */
+  bool early_results_scheduled;
+} grpc_chttp2_begin_write_result;
+
+grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
+    grpc_chttp2_transport* t);
+void grpc_chttp2_end_write(grpc_chttp2_transport* t, grpc_error* error);
+
+/** Process one slice of incoming data; return 1 if the connection is still
+    viable after reading, or 0 if the connection should be torn down */
+grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
+                                     const grpc_slice& slice);
+
+bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s);
+/** Get a writable stream
+    returns non-zero if there was a stream available */
+bool grpc_chttp2_list_pop_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream** s);
+bool grpc_chttp2_list_remove_writable_stream(grpc_chttp2_transport* t,
+                                             grpc_chttp2_stream* s);
+
+bool grpc_chttp2_list_add_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s);
+bool grpc_chttp2_list_have_writing_streams(grpc_chttp2_transport* t);
+bool grpc_chttp2_list_pop_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream** s);
+
+void grpc_chttp2_list_add_written_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_written_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream** s);
+
+void grpc_chttp2_list_add_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream** s);
+void grpc_chttp2_list_remove_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                     grpc_chttp2_stream* s);
+
+void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream** s);
+void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s);
+
+void grpc_chttp2_list_add_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s);
+bool grpc_chttp2_list_pop_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream** s);
+bool grpc_chttp2_list_remove_stalled_by_stream(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s);
+
+/********* Flow Control ***************/
+
+// Takes in a flow control action and performs all the needed operations.
+void grpc_chttp2_act_on_flowctl_action(
+    const grpc_core::chttp2::FlowControlAction& action,
+    grpc_chttp2_transport* t, grpc_chttp2_stream* s);
+
+/********* End of Flow Control ***************/
+
+inline grpc_chttp2_stream* grpc_chttp2_parsing_lookup_stream(
+    grpc_chttp2_transport* t, uint32_t id) {
+  return static_cast<grpc_chttp2_stream*>(
+      grpc_chttp2_stream_map_find(&t->stream_map, id));
+}
+grpc_chttp2_stream* grpc_chttp2_parsing_accept_stream(grpc_chttp2_transport* t,
+                                                      uint32_t id);
+
+void grpc_chttp2_add_incoming_goaway(grpc_chttp2_transport* t,
+                                     uint32_t goaway_error,
+                                     uint32_t last_stream_id,
+                                     const grpc_slice& goaway_text);
+
+void grpc_chttp2_parsing_become_skip_parser(grpc_chttp2_transport* t);
+
+void grpc_chttp2_complete_closure_step(grpc_chttp2_transport* t,
+                                       grpc_chttp2_stream* s,
+                                       grpc_closure** pclosure,
+                                       grpc_error* error, const char* desc);
+
+#define GRPC_HEADER_SIZE_IN_BYTES 5
+#define MAX_SIZE_T (~(size_t)0)
+
+#define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
+#define GRPC_CHTTP2_CLIENT_CONNECT_STRLEN \
+  (sizeof(GRPC_CHTTP2_CLIENT_CONNECT_STRING) - 1)
+
+// extern grpc_core::TraceFlag grpc_http_trace;
+// extern grpc_core::TraceFlag grpc_flowctl_trace;
+
+#define GRPC_CHTTP2_IF_TRACING(stmt)                \
+  do {                                              \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) { \
+      (stmt);                                       \
+    }                                               \
+  } while (0)
+
+void grpc_chttp2_fake_status(grpc_chttp2_transport* t,
+                             grpc_chttp2_stream* stream, grpc_error* error);
+void grpc_chttp2_mark_stream_closed(grpc_chttp2_transport* t,
+                                    grpc_chttp2_stream* s, int close_reads,
+                                    int close_writes, grpc_error* error);
+void grpc_chttp2_start_writing(grpc_chttp2_transport* t);
+
+#ifndef NDEBUG
+#define GRPC_CHTTP2_STREAM_REF(stream, reason) \
+  grpc_chttp2_stream_ref(stream, reason)
+#define GRPC_CHTTP2_STREAM_UNREF(stream, reason) \
+  grpc_chttp2_stream_unref(stream, reason)
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s, const char* reason);
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s, const char* reason);
+#else
+#define GRPC_CHTTP2_STREAM_REF(stream, reason) grpc_chttp2_stream_ref(stream)
+#define GRPC_CHTTP2_STREAM_UNREF(stream, reason) \
+  grpc_chttp2_stream_unref(stream)
+void grpc_chttp2_stream_ref(grpc_chttp2_stream* s);
+void grpc_chttp2_stream_unref(grpc_chttp2_stream* s);
+#endif
+
+#ifndef NDEBUG
+#define GRPC_CHTTP2_REF_TRANSPORT(t, r) \
+  grpc_chttp2_ref_transport(t, r, __FILE__, __LINE__)
+#define GRPC_CHTTP2_UNREF_TRANSPORT(t, r) \
+  grpc_chttp2_unref_transport(t, r, __FILE__, __LINE__)
+inline void grpc_chttp2_unref_transport(grpc_chttp2_transport* t,
+                                        const char* reason, const char* file,
+                                        int line) {
+  if (t->refs.Unref(grpc_core::DebugLocation(file, line), reason)) {
+    delete t;
+  }
+}
+inline void grpc_chttp2_ref_transport(grpc_chttp2_transport* t,
+                                      const char* reason, const char* file,
+                                      int line) {
+  t->refs.Ref(grpc_core::DebugLocation(file, line), reason);
+}
+#else
+#define GRPC_CHTTP2_REF_TRANSPORT(t, r) grpc_chttp2_ref_transport(t)
+#define GRPC_CHTTP2_UNREF_TRANSPORT(t, r) grpc_chttp2_unref_transport(t)
+inline void grpc_chttp2_unref_transport(grpc_chttp2_transport* t) {
+  if (t->refs.Unref()) {
+    delete t;
+  }
+}
+inline void grpc_chttp2_ref_transport(grpc_chttp2_transport* t) {
+  t->refs.Ref();
+}
+#endif
+
+void grpc_chttp2_ack_ping(grpc_chttp2_transport* t, uint64_t id);
+
+/** Add a new ping strike to ping_recv_state.ping_strikes. If
+    ping_recv_state.ping_strikes > ping_policy.max_ping_strikes, it sends GOAWAY
+    with error code ENHANCE_YOUR_CALM and additional debug data resembling
+    "too_many_pings" followed by immediately closing the connection. */
+void grpc_chttp2_add_ping_strike(grpc_chttp2_transport* t);
+
+/** add a ref to the stream and add it to the writable list;
+    ref will be dropped in writing.c */
+void grpc_chttp2_mark_stream_writable(grpc_chttp2_transport* t,
+                                      grpc_chttp2_stream* s);
+
+void grpc_chttp2_cancel_stream(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                               grpc_error* due_to_error);
+
+void grpc_chttp2_maybe_complete_recv_initial_metadata(grpc_chttp2_transport* t,
+                                                      grpc_chttp2_stream* s);
+void grpc_chttp2_maybe_complete_recv_message(grpc_chttp2_transport* t,
+                                             grpc_chttp2_stream* s);
+void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_chttp2_transport* t,
+                                                       grpc_chttp2_stream* s);
+
+void grpc_chttp2_fail_pending_writes(grpc_chttp2_transport* t,
+                                     grpc_chttp2_stream* s, grpc_error* error);
+
+/** Set the default keepalive configurations, must only be called at
+    initialization */
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args* args,
+                                               bool is_client);
+
+void grpc_chttp2_retry_initiate_ping(void* tp, grpc_error* error);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/parsing.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/parsing.cc
new file mode 100644
index 0000000..2cf2a7e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/parsing.cc	
@@ -0,0 +1,803 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/transport/http2_errors.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/status_conversion.h"
+#include "src/core/lib/transport/timeout_encoding.h"
+
+static grpc_error* init_frame_parser(grpc_chttp2_transport* t);
+static grpc_error* init_header_frame_parser(grpc_chttp2_transport* t,
+                                            int is_continuation);
+static grpc_error* init_data_frame_parser(grpc_chttp2_transport* t);
+static grpc_error* init_rst_stream_parser(grpc_chttp2_transport* t);
+static grpc_error* init_settings_frame_parser(grpc_chttp2_transport* t);
+static grpc_error* init_window_update_frame_parser(grpc_chttp2_transport* t);
+static grpc_error* init_ping_parser(grpc_chttp2_transport* t);
+static grpc_error* init_goaway_parser(grpc_chttp2_transport* t);
+static grpc_error* init_skip_frame_parser(grpc_chttp2_transport* t,
+                                          int is_header);
+
+static grpc_error* parse_frame_slice(grpc_chttp2_transport* t,
+                                     const grpc_slice& slice, int is_last);
+
+grpc_error* grpc_chttp2_perform_read(grpc_chttp2_transport* t,
+                                     const grpc_slice& slice) {
+  const uint8_t* beg = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* cur = beg;
+  grpc_error* err;
+
+  if (cur == end) return GRPC_ERROR_NONE;
+
+  switch (t->deframe_state) {
+    case GRPC_DTS_CLIENT_PREFIX_0:
+    case GRPC_DTS_CLIENT_PREFIX_1:
+    case GRPC_DTS_CLIENT_PREFIX_2:
+    case GRPC_DTS_CLIENT_PREFIX_3:
+    case GRPC_DTS_CLIENT_PREFIX_4:
+    case GRPC_DTS_CLIENT_PREFIX_5:
+    case GRPC_DTS_CLIENT_PREFIX_6:
+    case GRPC_DTS_CLIENT_PREFIX_7:
+    case GRPC_DTS_CLIENT_PREFIX_8:
+    case GRPC_DTS_CLIENT_PREFIX_9:
+    case GRPC_DTS_CLIENT_PREFIX_10:
+    case GRPC_DTS_CLIENT_PREFIX_11:
+    case GRPC_DTS_CLIENT_PREFIX_12:
+    case GRPC_DTS_CLIENT_PREFIX_13:
+    case GRPC_DTS_CLIENT_PREFIX_14:
+    case GRPC_DTS_CLIENT_PREFIX_15:
+    case GRPC_DTS_CLIENT_PREFIX_16:
+    case GRPC_DTS_CLIENT_PREFIX_17:
+    case GRPC_DTS_CLIENT_PREFIX_18:
+    case GRPC_DTS_CLIENT_PREFIX_19:
+    case GRPC_DTS_CLIENT_PREFIX_20:
+    case GRPC_DTS_CLIENT_PREFIX_21:
+    case GRPC_DTS_CLIENT_PREFIX_22:
+    case GRPC_DTS_CLIENT_PREFIX_23:
+      while (cur != end && t->deframe_state != GRPC_DTS_FH_0) {
+        if (*cur != GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state]) {
+          char* msg;
+          gpr_asprintf(
+              &msg,
+              "Connect string mismatch: expected '%c' (%d) got '%c' (%d) "
+              "at byte %d",
+              GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state],
+              static_cast<int>(static_cast<uint8_t>(
+                  GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state])),
+              *cur, static_cast<int>(*cur), t->deframe_state);
+          err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+          gpr_free(msg);
+          return err;
+        }
+        ++cur;
+        t->deframe_state = static_cast<grpc_chttp2_deframe_transport_state>(
+            1 + static_cast<int>(t->deframe_state));
+      }
+      if (cur == end) {
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    dts_fh_0:
+    case GRPC_DTS_FH_0:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_frame_size = (static_cast<uint32_t>(*cur)) << 16;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_1;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_1:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_frame_size |= (static_cast<uint32_t>(*cur)) << 8;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_2;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_2:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_frame_size |= *cur;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_3;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_3:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_frame_type = *cur;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_4;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_4:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_frame_flags = *cur;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_5;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_5:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_stream_id = ((static_cast<uint32_t>(*cur)) & 0x7f) << 24;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_6;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_6:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_stream_id |= (static_cast<uint32_t>(*cur)) << 16;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_7;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_7:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_stream_id |= (static_cast<uint32_t>(*cur)) << 8;
+      if (++cur == end) {
+        t->deframe_state = GRPC_DTS_FH_8;
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FH_8:
+      GPR_DEBUG_ASSERT(cur < end);
+      t->incoming_stream_id |= (static_cast<uint32_t>(*cur));
+      t->deframe_state = GRPC_DTS_FRAME;
+      err = init_frame_parser(t);
+      if (err != GRPC_ERROR_NONE) {
+        return err;
+      }
+      if (t->incoming_frame_size == 0) {
+        err = parse_frame_slice(t, grpc_empty_slice(), 1);
+        if (err != GRPC_ERROR_NONE) {
+          return err;
+        }
+        t->incoming_stream = nullptr;
+        if (++cur == end) {
+          t->deframe_state = GRPC_DTS_FH_0;
+          return GRPC_ERROR_NONE;
+        }
+        goto dts_fh_0; /* loop */
+      } else if (t->flow_control->flow_control_enabled() &&
+                 t->incoming_frame_size >
+                     t->settings[GRPC_ACKED_SETTINGS]
+                                [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]) {
+        char* msg;
+        gpr_asprintf(&msg, "Frame size %d is larger than max frame size %d",
+                     t->incoming_frame_size,
+                     t->settings[GRPC_ACKED_SETTINGS]
+                                [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]);
+        err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+        gpr_free(msg);
+        return err;
+      }
+      if (++cur == end) {
+        return GRPC_ERROR_NONE;
+      }
+    /* fallthrough */
+    case GRPC_DTS_FRAME:
+      GPR_DEBUG_ASSERT(cur < end);
+      if (static_cast<uint32_t>(end - cur) == t->incoming_frame_size) {
+        err = parse_frame_slice(
+            t,
+            grpc_slice_sub_no_ref(slice, static_cast<size_t>(cur - beg),
+                                  static_cast<size_t>(end - beg)),
+            1);
+        if (err != GRPC_ERROR_NONE) {
+          return err;
+        }
+        t->deframe_state = GRPC_DTS_FH_0;
+        t->incoming_stream = nullptr;
+        return GRPC_ERROR_NONE;
+      } else if (static_cast<uint32_t>(end - cur) > t->incoming_frame_size) {
+        size_t cur_offset = static_cast<size_t>(cur - beg);
+        err = parse_frame_slice(
+            t,
+            grpc_slice_sub_no_ref(slice, cur_offset,
+                                  cur_offset + t->incoming_frame_size),
+            1);
+        if (err != GRPC_ERROR_NONE) {
+          return err;
+        }
+        cur += t->incoming_frame_size;
+        t->incoming_stream = nullptr;
+        goto dts_fh_0; /* loop */
+      } else {
+        err = parse_frame_slice(
+            t,
+            grpc_slice_sub_no_ref(slice, static_cast<size_t>(cur - beg),
+                                  static_cast<size_t>(end - beg)),
+            0);
+        if (err != GRPC_ERROR_NONE) {
+          return err;
+        }
+        t->incoming_frame_size -= static_cast<uint32_t>(end - cur);
+        return GRPC_ERROR_NONE;
+      }
+      GPR_UNREACHABLE_CODE(return nullptr);
+  }
+
+  GPR_UNREACHABLE_CODE(return nullptr);
+}
+
+static grpc_error* init_frame_parser(grpc_chttp2_transport* t) {
+  if (t->is_first_frame &&
+      t->incoming_frame_type != GRPC_CHTTP2_FRAME_SETTINGS) {
+    char* msg;
+    gpr_asprintf(
+        &msg, "Expected SETTINGS frame as the first frame, got frame type %d",
+        t->incoming_frame_type);
+    grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return err;
+  }
+  t->is_first_frame = false;
+  if (t->expect_continuation_stream_id != 0) {
+    if (t->incoming_frame_type != GRPC_CHTTP2_FRAME_CONTINUATION) {
+      char* msg;
+      gpr_asprintf(&msg, "Expected CONTINUATION frame, got frame type %02x",
+                   t->incoming_frame_type);
+      grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      return err;
+    }
+    if (t->expect_continuation_stream_id != t->incoming_stream_id) {
+      char* msg;
+      gpr_asprintf(
+          &msg,
+          "Expected CONTINUATION frame for grpc_chttp2_stream %08x, got "
+          "grpc_chttp2_stream %08x",
+          t->expect_continuation_stream_id, t->incoming_stream_id);
+      grpc_error* err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      return err;
+    }
+    return init_header_frame_parser(t, 1);
+  }
+  switch (t->incoming_frame_type) {
+    case GRPC_CHTTP2_FRAME_DATA:
+      return init_data_frame_parser(t);
+    case GRPC_CHTTP2_FRAME_HEADER:
+      return init_header_frame_parser(t, 0);
+    case GRPC_CHTTP2_FRAME_CONTINUATION:
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Unexpected CONTINUATION frame");
+    case GRPC_CHTTP2_FRAME_RST_STREAM:
+      return init_rst_stream_parser(t);
+    case GRPC_CHTTP2_FRAME_SETTINGS:
+      return init_settings_frame_parser(t);
+    case GRPC_CHTTP2_FRAME_WINDOW_UPDATE:
+      return init_window_update_frame_parser(t);
+    case GRPC_CHTTP2_FRAME_PING:
+      return init_ping_parser(t);
+    case GRPC_CHTTP2_FRAME_GOAWAY:
+      return init_goaway_parser(t);
+    default:
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+        gpr_log(GPR_ERROR, "Unknown frame type %02x", t->incoming_frame_type);
+      }
+      return init_skip_frame_parser(t, 0);
+  }
+}
+
+static grpc_error* skip_parser(void* /*parser*/, grpc_chttp2_transport* /*t*/,
+                               grpc_chttp2_stream* /*s*/,
+                               const grpc_slice& /*slice*/, int /*is_last*/) {
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* skip_header(void* /*tp*/, grpc_mdelem md) {
+  GRPC_MDELEM_UNREF(md);
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_skip_frame_parser(grpc_chttp2_transport* t,
+                                          int is_header) {
+  if (is_header) {
+    uint8_t is_eoh = t->expect_continuation_stream_id != 0;
+    t->parser = grpc_chttp2_header_parser_parse;
+    t->parser_data = &t->hpack_parser;
+    t->hpack_parser.on_header = skip_header;
+    t->hpack_parser.on_header_user_data = nullptr;
+    t->hpack_parser.is_boundary = is_eoh;
+    t->hpack_parser.is_eof = static_cast<uint8_t>(is_eoh ? t->header_eof : 0);
+  } else {
+    t->parser = skip_parser;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_chttp2_parsing_become_skip_parser(grpc_chttp2_transport* t) {
+  init_skip_frame_parser(t, t->parser == grpc_chttp2_header_parser_parse);
+}
+
+static grpc_error* init_data_frame_parser(grpc_chttp2_transport* t) {
+  grpc_chttp2_stream* s =
+      grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id);
+  grpc_error* err = GRPC_ERROR_NONE;
+  grpc_core::chttp2::FlowControlAction action;
+  if (s == nullptr) {
+    err = t->flow_control->RecvData(t->incoming_frame_size);
+    action = t->flow_control->MakeAction();
+  } else {
+    err = s->flow_control->RecvData(t->incoming_frame_size);
+    action = s->flow_control->MakeAction();
+  }
+  grpc_chttp2_act_on_flowctl_action(action, t, s);
+  if (err != GRPC_ERROR_NONE) {
+    goto error_handler;
+  }
+  if (s == nullptr) {
+    return init_skip_frame_parser(t, 0);
+  }
+  s->received_bytes += t->incoming_frame_size;
+  s->stats.incoming.framing_bytes += 9;
+  if (err == GRPC_ERROR_NONE && s->read_closed) {
+    return init_skip_frame_parser(t, 0);
+  }
+  if (err == GRPC_ERROR_NONE) {
+    err = grpc_chttp2_data_parser_begin_frame(
+        &s->data_parser, t->incoming_frame_flags, s->id, s);
+  }
+error_handler:
+  intptr_t unused;
+  if (err == GRPC_ERROR_NONE) {
+    t->incoming_stream = s;
+    /* t->parser = grpc_chttp2_data_parser_parse;*/
+    t->parser = grpc_chttp2_data_parser_parse;
+    t->parser_data = &s->data_parser;
+    t->ping_state.last_ping_sent_time = GRPC_MILLIS_INF_PAST;
+    return GRPC_ERROR_NONE;
+  } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, &unused)) {
+    /* handle stream errors by closing the stream */
+    if (s != nullptr) {
+      grpc_chttp2_mark_stream_closed(t, s, true, false, err);
+    }
+    grpc_chttp2_add_rst_stream_to_next_write(t, t->incoming_stream_id,
+                                             GRPC_HTTP2_PROTOCOL_ERROR,
+                                             &s->stats.outgoing);
+    return init_skip_frame_parser(t, 0);
+  } else {
+    return err;
+  }
+}
+
+static void free_timeout(void* p) { gpr_free(p); }
+
+static bool md_key_cmp(grpc_mdelem md, const grpc_slice& reference) {
+  GPR_DEBUG_ASSERT(grpc_slice_is_interned(GRPC_MDKEY(md)));
+  return GRPC_MDKEY(md).refcount == reference.refcount;
+}
+
+static bool md_cmp(grpc_mdelem md, grpc_mdelem ref_md,
+                   const grpc_slice& ref_key) {
+  if (GPR_LIKELY(GRPC_MDELEM_IS_INTERNED(md))) {
+    return md.payload == ref_md.payload;
+  }
+  if (md_key_cmp(md, ref_key)) {
+    return grpc_slice_eq_static_interned(GRPC_MDVALUE(md),
+                                         GRPC_MDVALUE(ref_md));
+  }
+  return false;
+}
+
+static bool is_nonzero_status(grpc_mdelem md) {
+  // If md.payload == GRPC_MDELEM_GRPC_STATUS_1 or GRPC_MDELEM_GRPC_STATUS_2,
+  // then we have seen an error. In fact, if it is a GRPC_STATUS and it's
+  // not equal to GRPC_MDELEM_GRPC_STATUS_0, then we have seen an error.
+  // TODO(ctiller): check for a status like " 0"
+  return md_key_cmp(md, GRPC_MDSTR_GRPC_STATUS) &&
+         !md_cmp(md, GRPC_MDELEM_GRPC_STATUS_0, GRPC_MDSTR_GRPC_STATUS);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE on_initial_header_log(
+    grpc_chttp2_transport* t, grpc_chttp2_stream* s, grpc_mdelem md) {
+  char* key = grpc_slice_to_c_string(GRPC_MDKEY(md));
+  char* value =
+      grpc_dump_slice(GRPC_MDVALUE(md), GPR_DUMP_HEX | GPR_DUMP_ASCII);
+  gpr_log(GPR_INFO, "HTTP:%d:HDR:%s: %s: %s", s->id,
+          t->is_client ? "CLI" : "SVR", key, value);
+  gpr_free(key);
+  gpr_free(value);
+}
+
+static grpc_error* GPR_ATTRIBUTE_NOINLINE handle_timeout(grpc_chttp2_stream* s,
+                                                         grpc_mdelem md) {
+  grpc_millis* cached_timeout =
+      static_cast<grpc_millis*>(grpc_mdelem_get_user_data(md, free_timeout));
+  grpc_millis timeout;
+  if (cached_timeout != nullptr) {
+    timeout = *cached_timeout;
+  } else {
+    if (GPR_UNLIKELY(!grpc_http2_decode_timeout(GRPC_MDVALUE(md), &timeout))) {
+      char* val = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+      gpr_log(GPR_ERROR, "Ignoring bad timeout value '%s'", val);
+      gpr_free(val);
+      timeout = GRPC_MILLIS_INF_FUTURE;
+    }
+    if (GRPC_MDELEM_IS_INTERNED(md)) {
+      /* store the result */
+      cached_timeout =
+          static_cast<grpc_millis*>(gpr_malloc(sizeof(grpc_millis)));
+      *cached_timeout = timeout;
+      grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
+    }
+  }
+  if (timeout != GRPC_MILLIS_INF_FUTURE) {
+    grpc_chttp2_incoming_metadata_buffer_set_deadline(
+        &s->metadata_buffer[0], grpc_core::ExecCtx::Get()->Now() + timeout);
+  }
+  GRPC_MDELEM_UNREF(md);
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* GPR_ATTRIBUTE_NOINLINE handle_metadata_size_limit_exceeded(
+    grpc_chttp2_transport* t, grpc_chttp2_stream* s, grpc_mdelem md,
+    size_t new_size, size_t metadata_size_limit) {
+  gpr_log(GPR_DEBUG,
+          "received initial metadata size exceeds limit (%" PRIuPTR
+          " vs. %" PRIuPTR ")",
+          new_size, metadata_size_limit);
+  grpc_chttp2_cancel_stream(
+      t, s,
+      grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                             "received initial metadata size exceeds limit"),
+                         GRPC_ERROR_INT_GRPC_STATUS,
+                         GRPC_STATUS_RESOURCE_EXHAUSTED));
+  grpc_chttp2_parsing_become_skip_parser(t);
+  s->seen_error = true;
+  GRPC_MDELEM_UNREF(md);
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* GPR_ATTRIBUTE_NOINLINE
+handle_metadata_add_failure(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                            grpc_mdelem md, grpc_error* error) {
+  grpc_chttp2_cancel_stream(t, s, error);
+  grpc_chttp2_parsing_become_skip_parser(t);
+  s->seen_error = true;
+  GRPC_MDELEM_UNREF(md);
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* on_initial_header(void* tp, grpc_mdelem md) {
+  GPR_TIMER_SCOPE("on_initial_header", 0);
+
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  grpc_chttp2_stream* s = t->incoming_stream;
+  GPR_DEBUG_ASSERT(s != nullptr);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    on_initial_header_log(t, s, md);
+  }
+
+  if (is_nonzero_status(md)) {  // not GRPC_MDELEM_GRPC_STATUS_0?
+    s->seen_error = true;
+  } else if (md_key_cmp(md, GRPC_MDSTR_GRPC_TIMEOUT)) {
+    return handle_timeout(s, md);
+  }
+
+  const size_t new_size = s->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md);
+  const size_t metadata_size_limit =
+      t->settings[GRPC_ACKED_SETTINGS]
+                 [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+  if (GPR_UNLIKELY(new_size > metadata_size_limit)) {
+    return handle_metadata_size_limit_exceeded(t, s, md, new_size,
+                                               metadata_size_limit);
+  } else {
+    grpc_error* error =
+        grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[0], md);
+    if (GPR_UNLIKELY(error != GRPC_ERROR_NONE)) {
+      return handle_metadata_add_failure(t, s, md, error);
+    }
+  }
+  // Not timeout-related metadata, and no error occurred.
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* on_trailing_header(void* tp, grpc_mdelem md) {
+  GPR_TIMER_SCOPE("on_trailing_header", 0);
+
+  grpc_chttp2_transport* t = static_cast<grpc_chttp2_transport*>(tp);
+  grpc_chttp2_stream* s = t->incoming_stream;
+  GPR_DEBUG_ASSERT(s != nullptr);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+    char* key = grpc_slice_to_c_string(GRPC_MDKEY(md));
+    char* value =
+        grpc_dump_slice(GRPC_MDVALUE(md), GPR_DUMP_HEX | GPR_DUMP_ASCII);
+    gpr_log(GPR_INFO, "HTTP:%d:TRL:%s: %s: %s", s->id,
+            t->is_client ? "CLI" : "SVR", key, value);
+    gpr_free(key);
+    gpr_free(value);
+  }
+
+  if (is_nonzero_status(md)) {  // not GRPC_MDELEM_GRPC_STATUS_0?
+    s->seen_error = true;
+  }
+
+  const size_t new_size = s->metadata_buffer[1].size + GRPC_MDELEM_LENGTH(md);
+  const size_t metadata_size_limit =
+      t->settings[GRPC_ACKED_SETTINGS]
+                 [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE];
+  if (new_size > metadata_size_limit) {
+    gpr_log(GPR_DEBUG,
+            "received trailing metadata size exceeds limit (%" PRIuPTR
+            " vs. %" PRIuPTR ")",
+            new_size, metadata_size_limit);
+    grpc_chttp2_cancel_stream(
+        t, s,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                               "received trailing metadata size exceeds limit"),
+                           GRPC_ERROR_INT_GRPC_STATUS,
+                           GRPC_STATUS_RESOURCE_EXHAUSTED));
+    grpc_chttp2_parsing_become_skip_parser(t);
+    s->seen_error = true;
+    GRPC_MDELEM_UNREF(md);
+  } else {
+    grpc_error* error =
+        grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[1], md);
+    if (error != GRPC_ERROR_NONE) {
+      grpc_chttp2_cancel_stream(t, s, error);
+      grpc_chttp2_parsing_become_skip_parser(t);
+      s->seen_error = true;
+      GRPC_MDELEM_UNREF(md);
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_header_frame_parser(grpc_chttp2_transport* t,
+                                            int is_continuation) {
+  uint8_t is_eoh =
+      (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_HEADERS) != 0;
+  grpc_chttp2_stream* s;
+
+  /* TODO(ctiller): when to increment header_frames_received? */
+
+  if (is_eoh) {
+    t->expect_continuation_stream_id = 0;
+  } else {
+    t->expect_continuation_stream_id = t->incoming_stream_id;
+  }
+
+  if (!is_continuation) {
+    t->header_eof =
+        (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_STREAM) != 0;
+  }
+
+  t->ping_state.last_ping_sent_time = GRPC_MILLIS_INF_PAST;
+
+  /* could be a new grpc_chttp2_stream or an existing grpc_chttp2_stream */
+  s = grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id);
+  if (s == nullptr) {
+    if (GPR_UNLIKELY(is_continuation)) {
+      GRPC_CHTTP2_IF_TRACING(
+          gpr_log(GPR_ERROR,
+                  "grpc_chttp2_stream disbanded before CONTINUATION received"));
+      return init_skip_frame_parser(t, 1);
+    }
+    if (t->is_client) {
+      if (GPR_LIKELY((t->incoming_stream_id & 1) &&
+                     t->incoming_stream_id < t->next_stream_id)) {
+        /* this is an old (probably cancelled) grpc_chttp2_stream */
+      } else {
+        GRPC_CHTTP2_IF_TRACING(gpr_log(
+            GPR_ERROR, "ignoring new grpc_chttp2_stream creation on client"));
+      }
+      grpc_error* err = init_skip_frame_parser(t, 1);
+      if (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_HAS_PRIORITY) {
+        grpc_chttp2_hpack_parser_set_has_priority(&t->hpack_parser);
+      }
+      return err;
+    } else if (GPR_UNLIKELY(t->last_new_stream_id >= t->incoming_stream_id)) {
+      GRPC_CHTTP2_IF_TRACING(gpr_log(
+          GPR_ERROR,
+          "ignoring out of order new grpc_chttp2_stream request on server; "
+          "last grpc_chttp2_stream "
+          "id=%d, new grpc_chttp2_stream id=%d",
+          t->last_new_stream_id, t->incoming_stream_id));
+      return init_skip_frame_parser(t, 1);
+    } else if (GPR_UNLIKELY((t->incoming_stream_id & 1) == 0)) {
+      GRPC_CHTTP2_IF_TRACING(gpr_log(
+          GPR_ERROR,
+          "ignoring grpc_chttp2_stream with non-client generated index %d",
+          t->incoming_stream_id));
+      return init_skip_frame_parser(t, 1);
+    } else if (GPR_UNLIKELY(
+                   grpc_chttp2_stream_map_size(&t->stream_map) >=
+                   t->settings[GRPC_ACKED_SETTINGS]
+                              [GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS])) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Max stream count exceeded");
+    }
+    t->last_new_stream_id = t->incoming_stream_id;
+    s = t->incoming_stream =
+        grpc_chttp2_parsing_accept_stream(t, t->incoming_stream_id);
+    if (GPR_UNLIKELY(s == nullptr)) {
+      GRPC_CHTTP2_IF_TRACING(
+          gpr_log(GPR_ERROR, "grpc_chttp2_stream not accepted"));
+      return init_skip_frame_parser(t, 1);
+    }
+    if (t->channelz_socket != nullptr) {
+      t->channelz_socket->RecordStreamStartedFromRemote();
+    }
+  } else {
+    t->incoming_stream = s;
+  }
+  GPR_DEBUG_ASSERT(s != nullptr);
+  s->stats.incoming.framing_bytes += 9;
+  if (GPR_UNLIKELY(s->read_closed)) {
+    GRPC_CHTTP2_IF_TRACING(gpr_log(
+        GPR_ERROR, "skipping already closed grpc_chttp2_stream header"));
+    t->incoming_stream = nullptr;
+    return init_skip_frame_parser(t, 1);
+  }
+  t->parser = grpc_chttp2_header_parser_parse;
+  t->parser_data = &t->hpack_parser;
+  if (t->header_eof) {
+    s->eos_received = true;
+  }
+  switch (s->header_frames_received) {
+    case 0:
+      if (t->is_client && t->header_eof) {
+        GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "parsing Trailers-Only"));
+        if (s->trailing_metadata_available != nullptr) {
+          *s->trailing_metadata_available = true;
+        }
+        t->hpack_parser.on_header = on_trailing_header;
+      } else {
+        GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "parsing initial_metadata"));
+        t->hpack_parser.on_header = on_initial_header;
+      }
+      break;
+    case 1:
+      GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "parsing trailing_metadata"));
+      t->hpack_parser.on_header = on_trailing_header;
+      break;
+    case 2:
+      gpr_log(GPR_ERROR, "too many header frames received");
+      return init_skip_frame_parser(t, 1);
+  }
+  t->hpack_parser.on_header_user_data = t;
+  t->hpack_parser.is_boundary = is_eoh;
+  t->hpack_parser.is_eof = static_cast<uint8_t>(is_eoh ? t->header_eof : 0);
+  if (!is_continuation &&
+      (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_HAS_PRIORITY)) {
+    grpc_chttp2_hpack_parser_set_has_priority(&t->hpack_parser);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_window_update_frame_parser(grpc_chttp2_transport* t) {
+  grpc_error* err = grpc_chttp2_window_update_parser_begin_frame(
+      &t->simple.window_update, t->incoming_frame_size,
+      t->incoming_frame_flags);
+  if (err != GRPC_ERROR_NONE) return err;
+  if (t->incoming_stream_id != 0) {
+    grpc_chttp2_stream* s = t->incoming_stream =
+        grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id);
+    if (s == nullptr) {
+      return init_skip_frame_parser(t, 0);
+    }
+    s->stats.incoming.framing_bytes += 9;
+  }
+  t->parser = grpc_chttp2_window_update_parser_parse;
+  t->parser_data = &t->simple.window_update;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_ping_parser(grpc_chttp2_transport* t) {
+  grpc_error* err = grpc_chttp2_ping_parser_begin_frame(
+      &t->simple.ping, t->incoming_frame_size, t->incoming_frame_flags);
+  if (err != GRPC_ERROR_NONE) return err;
+  t->parser = grpc_chttp2_ping_parser_parse;
+  t->parser_data = &t->simple.ping;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_rst_stream_parser(grpc_chttp2_transport* t) {
+  grpc_error* err = grpc_chttp2_rst_stream_parser_begin_frame(
+      &t->simple.rst_stream, t->incoming_frame_size, t->incoming_frame_flags);
+  if (err != GRPC_ERROR_NONE) return err;
+  grpc_chttp2_stream* s = t->incoming_stream =
+      grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id);
+  if (!t->incoming_stream) {
+    return init_skip_frame_parser(t, 0);
+  }
+  s->stats.incoming.framing_bytes += 9;
+  t->parser = grpc_chttp2_rst_stream_parser_parse;
+  t->parser_data = &t->simple.rst_stream;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_goaway_parser(grpc_chttp2_transport* t) {
+  grpc_error* err = grpc_chttp2_goaway_parser_begin_frame(
+      &t->goaway_parser, t->incoming_frame_size, t->incoming_frame_flags);
+  if (err != GRPC_ERROR_NONE) return err;
+  t->parser = grpc_chttp2_goaway_parser_parse;
+  t->parser_data = &t->goaway_parser;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* init_settings_frame_parser(grpc_chttp2_transport* t) {
+  if (t->incoming_stream_id != 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Settings frame received for grpc_chttp2_stream");
+  }
+
+  grpc_error* err = grpc_chttp2_settings_parser_begin_frame(
+      &t->simple.settings, t->incoming_frame_size, t->incoming_frame_flags,
+      t->settings[GRPC_PEER_SETTINGS]);
+  if (err != GRPC_ERROR_NONE) {
+    return err;
+  }
+  if (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) {
+    memcpy(t->settings[GRPC_ACKED_SETTINGS], t->settings[GRPC_SENT_SETTINGS],
+           GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
+    grpc_chttp2_hptbl_set_max_bytes(
+        &t->hpack_parser.table,
+        t->settings[GRPC_ACKED_SETTINGS]
+                   [GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]);
+    t->sent_local_settings = 0;
+  }
+  t->parser = grpc_chttp2_settings_parser_parse;
+  t->parser_data = &t->simple.settings;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* parse_frame_slice(grpc_chttp2_transport* t,
+                                     const grpc_slice& slice, int is_last) {
+  grpc_chttp2_stream* s = t->incoming_stream;
+  grpc_error* err = t->parser(t->parser_data, t, s, slice, is_last);
+  intptr_t unused;
+  if (GPR_LIKELY(err == GRPC_ERROR_NONE)) {
+    return err;
+  } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, &unused)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
+      const char* msg = grpc_error_string(err);
+      gpr_log(GPR_ERROR, "%s", msg);
+    }
+    grpc_chttp2_parsing_become_skip_parser(t);
+    if (s) {
+      s->forced_close_error = err;
+      grpc_chttp2_add_rst_stream_to_next_write(t, t->incoming_stream_id,
+                                               GRPC_HTTP2_PROTOCOL_ERROR,
+                                               &s->stats.outgoing);
+    } else {
+      GRPC_ERROR_UNREF(err);
+    }
+  }
+  return err;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_lists.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_lists.cc
new file mode 100644
index 0000000..db79899
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_lists.cc	
@@ -0,0 +1,216 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <grpc/support/log.h>
+
+static const char* stream_list_id_string(grpc_chttp2_stream_list_id id) {
+  switch (id) {
+    case GRPC_CHTTP2_LIST_WRITABLE:
+      return "writable";
+    case GRPC_CHTTP2_LIST_WRITING:
+      return "writing";
+    case GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT:
+      return "stalled_by_transport";
+    case GRPC_CHTTP2_LIST_STALLED_BY_STREAM:
+      return "stalled_by_stream";
+    case GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY:
+      return "waiting_for_concurrency";
+    case STREAM_LIST_COUNT:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+grpc_core::TraceFlag grpc_trace_http2_stream_state(false, "http2_stream_state");
+
+/* core list management */
+
+static bool stream_list_empty(grpc_chttp2_transport* t,
+                              grpc_chttp2_stream_list_id id) {
+  return t->lists[id].head == nullptr;
+}
+
+static bool stream_list_pop(grpc_chttp2_transport* t,
+                            grpc_chttp2_stream** stream,
+                            grpc_chttp2_stream_list_id id) {
+  grpc_chttp2_stream* s = t->lists[id].head;
+  if (s) {
+    grpc_chttp2_stream* new_head = s->links[id].next;
+    GPR_ASSERT(s->included[id]);
+    if (new_head) {
+      t->lists[id].head = new_head;
+      new_head->links[id].prev = nullptr;
+    } else {
+      t->lists[id].head = nullptr;
+      t->lists[id].tail = nullptr;
+    }
+    s->included[id] = 0;
+  }
+  *stream = s;
+  if (s && GRPC_TRACE_FLAG_ENABLED(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_INFO, "%p[%d][%s]: pop from %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
+  return s != nullptr;
+}
+
+static void stream_list_remove(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                               grpc_chttp2_stream_list_id id) {
+  GPR_ASSERT(s->included[id]);
+  s->included[id] = 0;
+  if (s->links[id].prev) {
+    s->links[id].prev->links[id].next = s->links[id].next;
+  } else {
+    GPR_ASSERT(t->lists[id].head == s);
+    t->lists[id].head = s->links[id].next;
+  }
+  if (s->links[id].next) {
+    s->links[id].next->links[id].prev = s->links[id].prev;
+  } else {
+    t->lists[id].tail = s->links[id].prev;
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_INFO, "%p[%d][%s]: remove from %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
+}
+
+static bool stream_list_maybe_remove(grpc_chttp2_transport* t,
+                                     grpc_chttp2_stream* s,
+                                     grpc_chttp2_stream_list_id id) {
+  if (s->included[id]) {
+    stream_list_remove(t, s, id);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+static void stream_list_add_tail(grpc_chttp2_transport* t,
+                                 grpc_chttp2_stream* s,
+                                 grpc_chttp2_stream_list_id id) {
+  grpc_chttp2_stream* old_tail;
+  GPR_ASSERT(!s->included[id]);
+  old_tail = t->lists[id].tail;
+  s->links[id].next = nullptr;
+  s->links[id].prev = old_tail;
+  if (old_tail) {
+    old_tail->links[id].next = s;
+  } else {
+    t->lists[id].head = s;
+  }
+  t->lists[id].tail = s;
+  s->included[id] = 1;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_INFO, "%p[%d][%s]: add to %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
+}
+
+static bool stream_list_add(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                            grpc_chttp2_stream_list_id id) {
+  if (s->included[id]) {
+    return false;
+  }
+  stream_list_add_tail(t, s, id);
+  return true;
+}
+
+/* wrappers for specializations */
+
+bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream* s) {
+  GPR_ASSERT(s->id != 0);
+  return stream_list_add(t, s, GRPC_CHTTP2_LIST_WRITABLE);
+}
+
+bool grpc_chttp2_list_pop_writable_stream(grpc_chttp2_transport* t,
+                                          grpc_chttp2_stream** s) {
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WRITABLE);
+}
+
+bool grpc_chttp2_list_remove_writable_stream(grpc_chttp2_transport* t,
+                                             grpc_chttp2_stream* s) {
+  return stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_WRITABLE);
+}
+
+bool grpc_chttp2_list_add_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream* s) {
+  return stream_list_add(t, s, GRPC_CHTTP2_LIST_WRITING);
+}
+
+bool grpc_chttp2_list_have_writing_streams(grpc_chttp2_transport* t) {
+  return !stream_list_empty(t, GRPC_CHTTP2_LIST_WRITING);
+}
+
+bool grpc_chttp2_list_pop_writing_stream(grpc_chttp2_transport* t,
+                                         grpc_chttp2_stream** s) {
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WRITING);
+}
+
+void grpc_chttp2_list_add_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s) {
+  stream_list_add(t, s, GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY);
+}
+
+bool grpc_chttp2_list_pop_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream** s) {
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY);
+}
+
+void grpc_chttp2_list_remove_waiting_for_concurrency(grpc_chttp2_transport* t,
+                                                     grpc_chttp2_stream* s) {
+  stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY);
+}
+
+void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s) {
+  GPR_ASSERT(t->flow_control->flow_control_enabled());
+  stream_list_add(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
+}
+
+bool grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream** s) {
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
+}
+
+void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport* t,
+                                                  grpc_chttp2_stream* s) {
+  stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
+}
+
+void grpc_chttp2_list_add_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream* s) {
+  GPR_ASSERT(t->flow_control->flow_control_enabled());
+  stream_list_add(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
+}
+
+bool grpc_chttp2_list_pop_stalled_by_stream(grpc_chttp2_transport* t,
+                                            grpc_chttp2_stream** s) {
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
+}
+
+bool grpc_chttp2_list_remove_stalled_by_stream(grpc_chttp2_transport* t,
+                                               grpc_chttp2_stream* s) {
+  return stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.cc
new file mode 100644
index 0000000..647214b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.cc	
@@ -0,0 +1,177 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/stream_map.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+void grpc_chttp2_stream_map_init(grpc_chttp2_stream_map* map,
+                                 size_t initial_capacity) {
+  GPR_DEBUG_ASSERT(initial_capacity > 1);
+  map->keys =
+      static_cast<uint32_t*>(gpr_malloc(sizeof(uint32_t) * initial_capacity));
+  map->values =
+      static_cast<void**>(gpr_malloc(sizeof(void*) * initial_capacity));
+  map->count = 0;
+  map->free = 0;
+  map->capacity = initial_capacity;
+}
+
+void grpc_chttp2_stream_map_destroy(grpc_chttp2_stream_map* map) {
+  gpr_free(map->keys);
+  gpr_free(map->values);
+}
+
+static size_t compact(uint32_t* keys, void** values, size_t count) {
+  size_t i, out;
+
+  for (i = 0, out = 0; i < count; i++) {
+    if (values[i]) {
+      keys[out] = keys[i];
+      values[out] = values[i];
+      out++;
+    }
+  }
+
+  return out;
+}
+
+void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map* map, uint32_t key,
+                                void* value) {
+  size_t count = map->count;
+  size_t capacity = map->capacity;
+  uint32_t* keys = map->keys;
+  void** values = map->values;
+
+  // The first assertion ensures that the table is monotonically increasing.
+  GPR_ASSERT(count == 0 || keys[count - 1] < key);
+  GPR_DEBUG_ASSERT(value);
+  // Asserting that the key is not already in the map can be a debug assertion.
+  // Why: we're already checking that the map elements are monotonically
+  // increasing. If we re-add a key, i.e. if the key is already present, then
+  // either it is the most recently added key in the map (in which case the
+  // first assertion fails due to key == last_key) or there is a more recently
+  // added (larger) key at the end of the map: in which case the first assertion
+  // still fails due to key < last_key.
+  GPR_DEBUG_ASSERT(grpc_chttp2_stream_map_find(map, key) == nullptr);
+
+  if (count == capacity) {
+    if (map->free > capacity / 4) {
+      count = compact(keys, values, count);
+      map->free = 0;
+    } else {
+      /* resize when less than 25% of the table is free, because compaction
+         won't help much */
+      map->capacity = capacity = 2 * capacity;
+      map->keys = keys = static_cast<uint32_t*>(
+          gpr_realloc(keys, capacity * sizeof(uint32_t)));
+      map->values = values =
+          static_cast<void**>(gpr_realloc(values, capacity * sizeof(void*)));
+    }
+  }
+
+  keys[count] = key;
+  values[count] = value;
+  map->count = count + 1;
+}
+
+template <bool strict_find>
+static void** find(grpc_chttp2_stream_map* map, uint32_t key) {
+  size_t min_idx = 0;
+  size_t max_idx = map->count;
+  size_t mid_idx;
+  uint32_t* keys = map->keys;
+  void** values = map->values;
+  uint32_t mid_key;
+
+  GPR_DEBUG_ASSERT(!strict_find || max_idx > 0);
+  if (!strict_find && max_idx == 0) return nullptr;
+
+  while (min_idx < max_idx) {
+    /* find the midpoint, avoiding overflow */
+    mid_idx = min_idx + ((max_idx - min_idx) / 2);
+    mid_key = keys[mid_idx];
+
+    if (mid_key < key) {
+      min_idx = mid_idx + 1;
+    } else if (mid_key > key) {
+      max_idx = mid_idx;
+    } else /* mid_key == key */
+    {
+      return &values[mid_idx];
+    }
+  }
+
+  GPR_DEBUG_ASSERT(!strict_find);
+  return nullptr;
+}
+
+void* grpc_chttp2_stream_map_delete(grpc_chttp2_stream_map* map, uint32_t key) {
+  void** pvalue = find<true>(map, key);
+  GPR_DEBUG_ASSERT(pvalue != nullptr);
+  void* out = *pvalue;
+  GPR_DEBUG_ASSERT(out != nullptr);
+  *pvalue = nullptr;
+  map->free++;
+  /* recognize complete emptyness and ensure we can skip
+     defragmentation later */
+  if (map->free == map->count) {
+    map->free = map->count = 0;
+  }
+  GPR_DEBUG_ASSERT(grpc_chttp2_stream_map_find(map, key) == nullptr);
+  return out;
+}
+
+void* grpc_chttp2_stream_map_find(grpc_chttp2_stream_map* map, uint32_t key) {
+  void** pvalue = find<false>(map, key);
+  return pvalue != nullptr ? *pvalue : nullptr;
+}
+
+size_t grpc_chttp2_stream_map_size(grpc_chttp2_stream_map* map) {
+  return map->count - map->free;
+}
+
+void* grpc_chttp2_stream_map_rand(grpc_chttp2_stream_map* map) {
+  if (map->count == map->free) {
+    return nullptr;
+  }
+  if (map->free != 0) {
+    map->count = compact(map->keys, map->values, map->count);
+    map->free = 0;
+    GPR_ASSERT(map->count > 0);
+  }
+  return map->values[(static_cast<size_t>(rand())) % map->count];
+}
+
+void grpc_chttp2_stream_map_for_each(grpc_chttp2_stream_map* map,
+                                     void (*f)(void* user_data, uint32_t key,
+                                               void* value),
+                                     void* user_data) {
+  size_t i;
+
+  for (i = 0; i < map->count; i++) {
+    if (map->values[i]) {
+      f(user_data, map->keys[i], map->values[i]);
+    }
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.h
new file mode 100644
index 0000000..9fb8826
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/stream_map.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* Data structure to map a uint32_t to a data object (represented by a void*)
+
+   Represented as a sorted array of keys, and a corresponding array of values.
+   Lookups are performed with binary search.
+   Adds are restricted to strictly higher keys than previously seen (this is
+   guaranteed by http2). */
+typedef struct {
+  uint32_t* keys;
+  void** values;
+  size_t count;
+  size_t free;
+  size_t capacity;
+} grpc_chttp2_stream_map;
+
+void grpc_chttp2_stream_map_init(grpc_chttp2_stream_map* map,
+                                 size_t initial_capacity);
+void grpc_chttp2_stream_map_destroy(grpc_chttp2_stream_map* map);
+
+/* Add a new key: given http2 semantics, new keys must always be greater than
+   existing keys - this is asserted */
+void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map* map, uint32_t key,
+                                void* value);
+
+/* Delete an existing key - returns the previous value of the key if it existed,
+   or NULL otherwise */
+void* grpc_chttp2_stream_map_delete(grpc_chttp2_stream_map* map, uint32_t key);
+
+/* Return an existing key, or NULL if it does not exist */
+void* grpc_chttp2_stream_map_find(grpc_chttp2_stream_map* map, uint32_t key);
+
+/* Return a random entry */
+void* grpc_chttp2_stream_map_rand(grpc_chttp2_stream_map* map);
+
+/* How many (populated) entries are in the stream map? */
+size_t grpc_chttp2_stream_map_size(grpc_chttp2_stream_map* map);
+
+/* Callback on each stream */
+void grpc_chttp2_stream_map_for_each(grpc_chttp2_stream_map* map,
+                                     void (*f)(void* user_data, uint32_t key,
+                                               void* value),
+                                     void* user_data);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_STREAM_MAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.cc
new file mode 100644
index 0000000..d4b0178
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.cc	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/varint.h"
+
+uint32_t grpc_chttp2_hpack_varint_length(uint32_t tail_value) {
+  if (tail_value < (1 << 7)) {
+    return 2;
+  } else if (tail_value < (1 << 14)) {
+    return 3;
+  } else if (tail_value < (1 << 21)) {
+    return 4;
+  } else if (tail_value < (1 << 28)) {
+    return 5;
+  } else {
+    return 6;
+  }
+}
+
+void grpc_chttp2_hpack_write_varint_tail(uint32_t tail_value, uint8_t* target,
+                                         uint32_t tail_length) {
+  switch (tail_length) {
+    case 5:
+      target[4] = static_cast<uint8_t>((tail_value >> 28) | 0x80);
+    /* fallthrough */
+    case 4:
+      target[3] = static_cast<uint8_t>((tail_value >> 21) | 0x80);
+    /* fallthrough */
+    case 3:
+      target[2] = static_cast<uint8_t>((tail_value >> 14) | 0x80);
+    /* fallthrough */
+    case 2:
+      target[1] = static_cast<uint8_t>((tail_value >> 7) | 0x80);
+    /* fallthrough */
+    case 1:
+      target[0] = static_cast<uint8_t>((tail_value) | 0x80);
+  }
+  target[tail_length - 1] &= 0x7f;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.h
new file mode 100644
index 0000000..5a2b670
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/varint.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H
+
+#include <grpc/support/port_platform.h>
+
+/* Helpers for hpack varint encoding */
+
+/* length of a value that needs varint tail encoding (it's bigger than can be
+   bitpacked into the opcode byte) - returned value includes the length of the
+   opcode byte */
+uint32_t grpc_chttp2_hpack_varint_length(uint32_t tail_value);
+
+void grpc_chttp2_hpack_write_varint_tail(uint32_t tail_value, uint8_t* target,
+                                         uint32_t tail_length);
+
+/* maximum value that can be bitpacked with the opcode if the opcode has a
+   prefix
+   of length prefix_bits */
+#define GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits) \
+  ((uint32_t)((1 << (8 - (prefix_bits))) - 1))
+
+/* length required to bitpack a value */
+#define GRPC_CHTTP2_VARINT_LENGTH(n, prefix_bits) \
+  ((n) < GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits)   \
+       ? 1u                                       \
+       : grpc_chttp2_hpack_varint_length(         \
+             (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits)))
+
+#define GRPC_CHTTP2_WRITE_VARINT(n, prefix_bits, prefix_or, target, length)   \
+  do {                                                                        \
+    uint8_t* tgt = target;                                                    \
+    if ((length) == 1u) {                                                     \
+      (tgt)[0] = (uint8_t)((prefix_or) | (n));                                \
+    } else {                                                                  \
+      (tgt)[0] =                                                              \
+          (prefix_or) | (uint8_t)GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits);      \
+      grpc_chttp2_hpack_write_varint_tail(                                    \
+          (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits), (tgt) + 1, (length)-1); \
+    }                                                                         \
+  } while (0)
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_VARINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/writing.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/writing.cc
new file mode 100644
index 0000000..c7613af
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/chttp2/transport/writing.cc	
@@ -0,0 +1,699 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/chttp2/transport/context_list.h"
+#include "src/core/ext/transport/chttp2/transport/internal.h"
+
+#include <limits.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+static void add_to_write_list(grpc_chttp2_write_cb** list,
+                              grpc_chttp2_write_cb* cb) {
+  cb->next = *list;
+  *list = cb;
+}
+
+static void finish_write_cb(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                            grpc_chttp2_write_cb* cb, grpc_error* error) {
+  grpc_chttp2_complete_closure_step(t, s, &cb->closure, error,
+                                    "finish_write_cb");
+  cb->next = t->write_cb_pool;
+  t->write_cb_pool = cb;
+}
+
+static void maybe_initiate_ping(grpc_chttp2_transport* t) {
+  grpc_chttp2_ping_queue* pq = &t->ping_queue;
+  if (grpc_closure_list_empty(pq->lists[GRPC_CHTTP2_PCL_NEXT])) {
+    /* no ping needed: wait */
+    return;
+  }
+  if (!grpc_closure_list_empty(pq->lists[GRPC_CHTTP2_PCL_INFLIGHT])) {
+    /* ping already in-flight: wait */
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace) ||
+        GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "%s: Ping delayed [%p]: already pinging",
+              t->is_client ? "CLIENT" : "SERVER", t->peer_string);
+    }
+    return;
+  }
+  if (t->ping_state.pings_before_data_required == 0 &&
+      t->ping_policy.max_pings_without_data != 0) {
+    /* need to receive something of substance before sending a ping again */
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace) ||
+        GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "%s: Ping delayed [%p]: too many recent pings: %d/%d",
+              t->is_client ? "CLIENT" : "SERVER", t->peer_string,
+              t->ping_state.pings_before_data_required,
+              t->ping_policy.max_pings_without_data);
+    }
+    return;
+  }
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+
+  grpc_millis next_allowed_ping_interval =
+      (t->keepalive_permit_without_calls == 0 &&
+       grpc_chttp2_stream_map_size(&t->stream_map) == 0)
+          ? 7200 * GPR_MS_PER_SEC
+          : t->ping_policy.min_sent_ping_interval_without_data;
+  grpc_millis next_allowed_ping =
+      t->ping_state.last_ping_sent_time + next_allowed_ping_interval;
+
+  if (next_allowed_ping > now) {
+    /* not enough elapsed time between successive pings */
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace) ||
+        GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO,
+              "%s: Ping delayed [%p]: not enough time elapsed since last ping. "
+              " Last ping %f: Next ping %f: Now %f",
+              t->is_client ? "CLIENT" : "SERVER", t->peer_string,
+              static_cast<double>(t->ping_state.last_ping_sent_time),
+              static_cast<double>(next_allowed_ping), static_cast<double>(now));
+    }
+    if (!t->ping_state.is_delayed_ping_timer_set) {
+      t->ping_state.is_delayed_ping_timer_set = true;
+      GRPC_CHTTP2_REF_TRANSPORT(t, "retry_initiate_ping_locked");
+      GRPC_CLOSURE_INIT(&t->retry_initiate_ping_locked,
+                        grpc_chttp2_retry_initiate_ping, t,
+                        grpc_schedule_on_exec_ctx);
+      grpc_timer_init(&t->ping_state.delayed_ping_timer, next_allowed_ping,
+                      &t->retry_initiate_ping_locked);
+    }
+    return;
+  }
+
+  pq->inflight_id = t->ping_ctr;
+  t->ping_ctr++;
+  grpc_core::ExecCtx::RunList(DEBUG_LOCATION,
+                              &pq->lists[GRPC_CHTTP2_PCL_INITIATE]);
+  grpc_closure_list_move(&pq->lists[GRPC_CHTTP2_PCL_NEXT],
+                         &pq->lists[GRPC_CHTTP2_PCL_INFLIGHT]);
+  grpc_slice_buffer_add(&t->outbuf,
+                        grpc_chttp2_ping_create(false, pq->inflight_id));
+  GRPC_STATS_INC_HTTP2_PINGS_SENT();
+  t->ping_state.last_ping_sent_time = now;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace) ||
+      GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+    gpr_log(GPR_INFO, "%s: Ping sent [%s]: %d/%d",
+            t->is_client ? "CLIENT" : "SERVER", t->peer_string,
+            t->ping_state.pings_before_data_required,
+            t->ping_policy.max_pings_without_data);
+  }
+  t->ping_state.pings_before_data_required -=
+      (t->ping_state.pings_before_data_required != 0);
+}
+
+static bool update_list(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                        int64_t send_bytes, grpc_chttp2_write_cb** list,
+                        int64_t* ctr, grpc_error* error) {
+  bool sched_any = false;
+  grpc_chttp2_write_cb* cb = *list;
+  *list = nullptr;
+  *ctr += send_bytes;
+  while (cb) {
+    grpc_chttp2_write_cb* next = cb->next;
+    if (cb->call_at_byte <= *ctr) {
+      sched_any = true;
+      finish_write_cb(t, s, cb, GRPC_ERROR_REF(error));
+    } else {
+      add_to_write_list(list, cb);
+    }
+    cb = next;
+  }
+  GRPC_ERROR_UNREF(error);
+  return sched_any;
+}
+
+static void report_stall(grpc_chttp2_transport* t, grpc_chttp2_stream* s,
+                         const char* staller) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_flowctl_trace)) {
+    gpr_log(
+        GPR_DEBUG,
+        "%s:%p stream %d moved to stalled list by %s. This is FULLY expected "
+        "to happen in a healthy program that is not seeing flow control stalls."
+        " However, if you know that there are unwanted stalls, here is some "
+        "helpful data: [fc:pending=%" PRIdPTR ":pending-compressed=%" PRIdPTR
+        ":flowed=%" PRId64 ":peer_initwin=%d:t_win=%" PRId64
+        ":s_win=%d:s_delta=%" PRId64 "]",
+        t->peer_string, t, s->id, staller, s->flow_controlled_buffer.length,
+        s->stream_compression_method ==
+                GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS
+            ? 0
+            : s->compressed_data_buffer.length,
+        s->flow_controlled_bytes_flowed,
+        t->settings[GRPC_ACKED_SETTINGS]
+                   [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE],
+        t->flow_control->remote_window(),
+        static_cast<uint32_t> GPR_MAX(
+            0,
+            s->flow_control->remote_window_delta() +
+                (int64_t)t->settings[GRPC_PEER_SETTINGS]
+                                    [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]),
+        s->flow_control->remote_window_delta());
+  }
+}
+
+/* How many bytes would we like to put on the wire during a single syscall */
+static uint32_t target_write_size(grpc_chttp2_transport* /*t*/) {
+  return 1024 * 1024;
+}
+
+// Returns true if initial_metadata contains only default headers.
+static bool is_default_initial_metadata(grpc_metadata_batch* initial_metadata) {
+  return initial_metadata->list.default_count == initial_metadata->list.count;
+}
+
+namespace {
+class StreamWriteContext;
+
+class WriteContext {
+ public:
+  WriteContext(grpc_chttp2_transport* t) : t_(t) {
+    GRPC_STATS_INC_HTTP2_WRITES_BEGUN();
+    GPR_TIMER_SCOPE("grpc_chttp2_begin_write", 0);
+  }
+
+  // TODO(ctiller): make this the destructor
+  void FlushStats() {
+    GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(
+        initial_metadata_writes_);
+    GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(message_writes_);
+    GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(
+        trailing_metadata_writes_);
+    GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(flow_control_writes_);
+  }
+
+  void FlushSettings() {
+    if (t_->dirtied_local_settings && !t_->sent_local_settings) {
+      grpc_slice_buffer_add(
+          &t_->outbuf, grpc_chttp2_settings_create(
+                           t_->settings[GRPC_SENT_SETTINGS],
+                           t_->settings[GRPC_LOCAL_SETTINGS],
+                           t_->force_send_settings, GRPC_CHTTP2_NUM_SETTINGS));
+      t_->force_send_settings = false;
+      t_->dirtied_local_settings = false;
+      t_->sent_local_settings = true;
+      GRPC_STATS_INC_HTTP2_SETTINGS_WRITES();
+    }
+  }
+
+  void FlushQueuedBuffers() {
+    /* simple writes are queued to qbuf, and flushed here */
+    grpc_slice_buffer_move_into(&t_->qbuf, &t_->outbuf);
+    t_->num_pending_induced_frames = 0;
+    GPR_ASSERT(t_->qbuf.count == 0);
+  }
+
+  void FlushWindowUpdates() {
+    uint32_t transport_announce =
+        t_->flow_control->MaybeSendUpdate(t_->outbuf.count > 0);
+    if (transport_announce) {
+      grpc_transport_one_way_stats throwaway_stats;
+      grpc_slice_buffer_add(
+          &t_->outbuf, grpc_chttp2_window_update_create(0, transport_announce,
+                                                        &throwaway_stats));
+      ResetPingClock();
+    }
+  }
+
+  void FlushPingAcks() {
+    for (size_t i = 0; i < t_->ping_ack_count; i++) {
+      grpc_slice_buffer_add(&t_->outbuf,
+                            grpc_chttp2_ping_create(true, t_->ping_acks[i]));
+    }
+    t_->ping_ack_count = 0;
+  }
+
+  void EnactHpackSettings() {
+    grpc_chttp2_hpack_compressor_set_max_table_size(
+        &t_->hpack_compressor,
+        t_->settings[GRPC_PEER_SETTINGS]
+                    [GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]);
+  }
+
+  void UpdateStreamsNoLongerStalled() {
+    grpc_chttp2_stream* s;
+    while (grpc_chttp2_list_pop_stalled_by_transport(t_, &s)) {
+      if (t_->closed_with_error == GRPC_ERROR_NONE &&
+          grpc_chttp2_list_add_writable_stream(t_, s)) {
+        if (!s->refcount->refs.RefIfNonZero()) {
+          grpc_chttp2_list_remove_writable_stream(t_, s);
+        }
+      }
+    }
+  }
+
+  grpc_chttp2_stream* NextStream() {
+    if (t_->outbuf.length > target_write_size(t_)) {
+      result_.partial = true;
+      return nullptr;
+    }
+
+    grpc_chttp2_stream* s;
+    if (!grpc_chttp2_list_pop_writable_stream(t_, &s)) {
+      return nullptr;
+    }
+
+    return s;
+  }
+
+  void ResetPingClock() {
+    if (!t_->is_client) {
+      t_->ping_recv_state.last_ping_recv_time = GRPC_MILLIS_INF_PAST;
+      t_->ping_recv_state.ping_strikes = 0;
+    }
+    t_->ping_state.pings_before_data_required =
+        t_->ping_policy.max_pings_without_data;
+  }
+
+  void IncInitialMetadataWrites() { ++initial_metadata_writes_; }
+  void IncWindowUpdateWrites() { ++flow_control_writes_; }
+  void IncMessageWrites() { ++message_writes_; }
+  void IncTrailingMetadataWrites() { ++trailing_metadata_writes_; }
+
+  void NoteScheduledResults() { result_.early_results_scheduled = true; }
+
+  grpc_chttp2_transport* transport() const { return t_; }
+
+  grpc_chttp2_begin_write_result Result() {
+    result_.writing = t_->outbuf.count > 0;
+    return result_;
+  }
+
+ private:
+  grpc_chttp2_transport* const t_;
+
+  /* stats histogram counters: we increment these throughout this function,
+     and at the end publish to the central stats histograms */
+  int flow_control_writes_ = 0;
+  int initial_metadata_writes_ = 0;
+  int trailing_metadata_writes_ = 0;
+  int message_writes_ = 0;
+  grpc_chttp2_begin_write_result result_ = {false, false, false};
+};
+
+class DataSendContext {
+ public:
+  DataSendContext(WriteContext* write_context, grpc_chttp2_transport* t,
+                  grpc_chttp2_stream* s)
+      : write_context_(write_context),
+        t_(t),
+        s_(s),
+        sending_bytes_before_(s_->sending_bytes) {}
+
+  uint32_t stream_remote_window() const {
+    return static_cast<uint32_t> GPR_MAX(
+        0, s_->flow_control->remote_window_delta() +
+               (int64_t)t_->settings[GRPC_PEER_SETTINGS]
+                                    [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]);
+  }
+
+  uint32_t max_outgoing() const {
+    return static_cast<uint32_t> GPR_MIN(
+        t_->settings[GRPC_PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
+        GPR_MIN(stream_remote_window(), t_->flow_control->remote_window()));
+  }
+
+  bool AnyOutgoing() const { return max_outgoing() > 0; }
+
+  void FlushUncompressedBytes() {
+    uint32_t send_bytes = static_cast<uint32_t> GPR_MIN(
+        max_outgoing(), s_->flow_controlled_buffer.length);
+    is_last_frame_ = send_bytes == s_->flow_controlled_buffer.length &&
+                     s_->fetching_send_message == nullptr &&
+                     s_->send_trailing_metadata != nullptr &&
+                     grpc_metadata_batch_is_empty(s_->send_trailing_metadata);
+    grpc_chttp2_encode_data(s_->id, &s_->flow_controlled_buffer, send_bytes,
+                            is_last_frame_, &s_->stats.outgoing, &t_->outbuf);
+    s_->flow_control->SentData(send_bytes);
+    s_->sending_bytes += send_bytes;
+  }
+
+  void FlushCompressedBytes() {
+    GPR_DEBUG_ASSERT(s_->stream_compression_method !=
+                     GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS);
+
+    uint32_t send_bytes = static_cast<uint32_t> GPR_MIN(
+        max_outgoing(), s_->compressed_data_buffer.length);
+    bool is_last_data_frame =
+        (send_bytes == s_->compressed_data_buffer.length &&
+         s_->flow_controlled_buffer.length == 0 &&
+         s_->fetching_send_message == nullptr);
+    if (is_last_data_frame && s_->send_trailing_metadata != nullptr &&
+        s_->stream_compression_ctx != nullptr) {
+      if (GPR_UNLIKELY(!grpc_stream_compress(
+              s_->stream_compression_ctx, &s_->flow_controlled_buffer,
+              &s_->compressed_data_buffer, nullptr, MAX_SIZE_T,
+              GRPC_STREAM_COMPRESSION_FLUSH_FINISH))) {
+        gpr_log(GPR_ERROR, "Stream compression failed.");
+      }
+      grpc_stream_compression_context_destroy(s_->stream_compression_ctx);
+      s_->stream_compression_ctx = nullptr;
+      /* After finish, bytes in s->compressed_data_buffer may be
+       * more than max_outgoing. Start another round of the current
+       * while loop so that send_bytes and is_last_data_frame are
+       * recalculated. */
+      return;
+    }
+    is_last_frame_ = is_last_data_frame &&
+                     s_->send_trailing_metadata != nullptr &&
+                     grpc_metadata_batch_is_empty(s_->send_trailing_metadata);
+    grpc_chttp2_encode_data(s_->id, &s_->compressed_data_buffer, send_bytes,
+                            is_last_frame_, &s_->stats.outgoing, &t_->outbuf);
+    s_->flow_control->SentData(send_bytes);
+    if (s_->compressed_data_buffer.length == 0) {
+      s_->sending_bytes += s_->uncompressed_data_size;
+    }
+  }
+
+  void CompressMoreBytes() {
+    GPR_DEBUG_ASSERT(s_->stream_compression_method !=
+                     GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS);
+
+    if (s_->stream_compression_ctx == nullptr) {
+      s_->stream_compression_ctx =
+          grpc_stream_compression_context_create(s_->stream_compression_method);
+    }
+    s_->uncompressed_data_size = s_->flow_controlled_buffer.length;
+    if (GPR_UNLIKELY(!grpc_stream_compress(
+            s_->stream_compression_ctx, &s_->flow_controlled_buffer,
+            &s_->compressed_data_buffer, nullptr, MAX_SIZE_T,
+            GRPC_STREAM_COMPRESSION_FLUSH_SYNC))) {
+      gpr_log(GPR_ERROR, "Stream compression failed.");
+    }
+  }
+
+  bool is_last_frame() const { return is_last_frame_; }
+
+  void CallCallbacks() {
+    if (update_list(
+            t_, s_,
+            static_cast<int64_t>(s_->sending_bytes - sending_bytes_before_),
+            &s_->on_flow_controlled_cbs, &s_->flow_controlled_bytes_flowed,
+            GRPC_ERROR_NONE)) {
+      write_context_->NoteScheduledResults();
+    }
+  }
+
+ private:
+  WriteContext* write_context_;
+  grpc_chttp2_transport* t_;
+  grpc_chttp2_stream* s_;
+  const size_t sending_bytes_before_;
+  bool is_last_frame_ = false;
+};
+
+class StreamWriteContext {
+ public:
+  StreamWriteContext(WriteContext* write_context, grpc_chttp2_stream* s)
+      : write_context_(write_context), t_(write_context->transport()), s_(s) {
+    GRPC_CHTTP2_IF_TRACING(
+        gpr_log(GPR_INFO, "W:%p %s[%d] im-(sent,send)=(%d,%d) announce=%d", t_,
+                t_->is_client ? "CLIENT" : "SERVER", s->id,
+                s->sent_initial_metadata, s->send_initial_metadata != nullptr,
+                (int)(s->flow_control->local_window_delta() -
+                      s->flow_control->announced_window_delta())));
+  }
+
+  void FlushInitialMetadata() {
+    /* send initial metadata if it's available */
+    if (s_->sent_initial_metadata) return;
+    if (s_->send_initial_metadata == nullptr) return;
+
+    // We skip this on the server side if there is no custom initial
+    // metadata, there are no messages to send, and we are also sending
+    // trailing metadata.  This results in a Trailers-Only response,
+    // which is required for retries, as per:
+    // https://github.com/grpc/proposal/blob/master/A6-client-retries.md#when-retries-are-valid
+    if (!t_->is_client && s_->fetching_send_message == nullptr &&
+        s_->flow_controlled_buffer.length == 0 &&
+        compressed_data_buffer_len() == 0 &&
+        s_->send_trailing_metadata != nullptr &&
+        is_default_initial_metadata(s_->send_initial_metadata)) {
+      ConvertInitialMetadataToTrailingMetadata();
+    } else {
+      grpc_encode_header_options hopt = {
+          s_->id,  // stream_id
+          false,   // is_eof
+          t_->settings[GRPC_PEER_SETTINGS]
+                      [GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA] !=
+              0,  // use_true_binary_metadata
+          t_->settings[GRPC_PEER_SETTINGS]
+                      [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],  // max_frame_size
+          &s_->stats.outgoing                                 // stats
+      };
+      grpc_chttp2_encode_header(&t_->hpack_compressor, nullptr, 0,
+                                s_->send_initial_metadata, &hopt, &t_->outbuf);
+      write_context_->ResetPingClock();
+      write_context_->IncInitialMetadataWrites();
+    }
+
+    s_->send_initial_metadata = nullptr;
+    s_->sent_initial_metadata = true;
+    write_context_->NoteScheduledResults();
+    grpc_chttp2_complete_closure_step(
+        t_, s_, &s_->send_initial_metadata_finished, GRPC_ERROR_NONE,
+        "send_initial_metadata_finished");
+  }
+
+  size_t compressed_data_buffer_len() {
+    return s_->stream_compression_method ==
+                   GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS
+               ? 0
+               : s_->compressed_data_buffer.length;
+  }
+
+  void FlushWindowUpdates() {
+    /* send any window updates */
+    const uint32_t stream_announce = s_->flow_control->MaybeSendUpdate();
+    if (stream_announce == 0) return;
+
+    grpc_slice_buffer_add(
+        &t_->outbuf, grpc_chttp2_window_update_create(s_->id, stream_announce,
+                                                      &s_->stats.outgoing));
+    write_context_->ResetPingClock();
+    write_context_->IncWindowUpdateWrites();
+  }
+
+  void FlushData() {
+    if (!s_->sent_initial_metadata) return;
+
+    if (s_->flow_controlled_buffer.length == 0 &&
+        compressed_data_buffer_len() == 0) {
+      return;  // early out: nothing to do
+    }
+
+    DataSendContext data_send_context(write_context_, t_, s_);
+
+    if (!data_send_context.AnyOutgoing()) {
+      if (t_->flow_control->remote_window() <= 0) {
+        report_stall(t_, s_, "transport");
+        grpc_chttp2_list_add_stalled_by_transport(t_, s_);
+      } else if (data_send_context.stream_remote_window() <= 0) {
+        report_stall(t_, s_, "stream");
+        grpc_chttp2_list_add_stalled_by_stream(t_, s_);
+      }
+      return;  // early out: nothing to do
+    }
+
+    if (s_->stream_compression_method ==
+        GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS) {
+      while (s_->flow_controlled_buffer.length > 0 &&
+             data_send_context.max_outgoing() > 0) {
+        data_send_context.FlushUncompressedBytes();
+      }
+    } else {
+      while ((s_->flow_controlled_buffer.length > 0 ||
+              s_->compressed_data_buffer.length > 0) &&
+             data_send_context.max_outgoing() > 0) {
+        if (s_->compressed_data_buffer.length > 0) {
+          data_send_context.FlushCompressedBytes();
+        } else {
+          data_send_context.CompressMoreBytes();
+        }
+      }
+    }
+    write_context_->ResetPingClock();
+    if (data_send_context.is_last_frame()) {
+      SentLastFrame();
+    }
+    data_send_context.CallCallbacks();
+    stream_became_writable_ = true;
+    if (s_->flow_controlled_buffer.length > 0 ||
+        compressed_data_buffer_len() > 0) {
+      GRPC_CHTTP2_STREAM_REF(s_, "chttp2_writing:fork");
+      grpc_chttp2_list_add_writable_stream(t_, s_);
+    }
+    write_context_->IncMessageWrites();
+  }
+
+  void FlushTrailingMetadata() {
+    if (!s_->sent_initial_metadata) return;
+
+    if (s_->send_trailing_metadata == nullptr) return;
+    if (s_->fetching_send_message != nullptr) return;
+    if (s_->flow_controlled_buffer.length != 0) return;
+    if (compressed_data_buffer_len() != 0) return;
+
+    GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "sending trailing_metadata"));
+    if (grpc_metadata_batch_is_empty(s_->send_trailing_metadata)) {
+      grpc_chttp2_encode_data(s_->id, &s_->flow_controlled_buffer, 0, true,
+                              &s_->stats.outgoing, &t_->outbuf);
+    } else {
+      grpc_encode_header_options hopt = {
+          s_->id, true,
+          t_->settings[GRPC_PEER_SETTINGS]
+                      [GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA] !=
+              0,
+
+          t_->settings[GRPC_PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE],
+          &s_->stats.outgoing};
+      grpc_chttp2_encode_header(&t_->hpack_compressor,
+                                extra_headers_for_trailing_metadata_,
+                                num_extra_headers_for_trailing_metadata_,
+                                s_->send_trailing_metadata, &hopt, &t_->outbuf);
+    }
+    write_context_->IncTrailingMetadataWrites();
+    write_context_->ResetPingClock();
+    SentLastFrame();
+
+    write_context_->NoteScheduledResults();
+    grpc_chttp2_complete_closure_step(
+        t_, s_, &s_->send_trailing_metadata_finished, GRPC_ERROR_NONE,
+        "send_trailing_metadata_finished");
+  }
+
+  bool stream_became_writable() { return stream_became_writable_; }
+
+ private:
+  void ConvertInitialMetadataToTrailingMetadata() {
+    GRPC_CHTTP2_IF_TRACING(
+        gpr_log(GPR_INFO, "not sending initial_metadata (Trailers-Only)"));
+    // When sending Trailers-Only, we need to move the :status and
+    // content-type headers to the trailers.
+    if (s_->send_initial_metadata->idx.named.status != nullptr) {
+      extra_headers_for_trailing_metadata_
+          [num_extra_headers_for_trailing_metadata_++] =
+              &s_->send_initial_metadata->idx.named.status->md;
+    }
+    if (s_->send_initial_metadata->idx.named.content_type != nullptr) {
+      extra_headers_for_trailing_metadata_
+          [num_extra_headers_for_trailing_metadata_++] =
+              &s_->send_initial_metadata->idx.named.content_type->md;
+    }
+  }
+
+  void SentLastFrame() {
+    s_->send_trailing_metadata = nullptr;
+    s_->sent_trailing_metadata = true;
+    s_->eos_sent = true;
+
+    if (!t_->is_client && !s_->read_closed) {
+      grpc_slice_buffer_add(
+          &t_->outbuf, grpc_chttp2_rst_stream_create(
+                           s_->id, GRPC_HTTP2_NO_ERROR, &s_->stats.outgoing));
+    }
+    grpc_chttp2_mark_stream_closed(t_, s_, !t_->is_client, true,
+                                   GRPC_ERROR_NONE);
+  }
+
+  WriteContext* const write_context_;
+  grpc_chttp2_transport* const t_;
+  grpc_chttp2_stream* const s_;
+  bool stream_became_writable_ = false;
+  grpc_mdelem* extra_headers_for_trailing_metadata_[2];
+  size_t num_extra_headers_for_trailing_metadata_ = 0;
+};
+}  // namespace
+
+grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
+    grpc_chttp2_transport* t) {
+  WriteContext ctx(t);
+  ctx.FlushSettings();
+  ctx.FlushPingAcks();
+  ctx.FlushQueuedBuffers();
+  ctx.EnactHpackSettings();
+
+  if (t->flow_control->remote_window() > 0) {
+    ctx.UpdateStreamsNoLongerStalled();
+  }
+
+  /* for each grpc_chttp2_stream that's become writable, frame it's data
+     (according to available window sizes) and add to the output buffer */
+  while (grpc_chttp2_stream* s = ctx.NextStream()) {
+    StreamWriteContext stream_ctx(&ctx, s);
+    size_t orig_len = t->outbuf.length;
+    stream_ctx.FlushInitialMetadata();
+    stream_ctx.FlushWindowUpdates();
+    stream_ctx.FlushData();
+    stream_ctx.FlushTrailingMetadata();
+    if (t->outbuf.length > orig_len) {
+      /* Add this stream to the list of the contexts to be traced at TCP */
+      s->byte_counter += t->outbuf.length - orig_len;
+      if (s->traced && grpc_endpoint_can_track_err(t->ep)) {
+        grpc_core::ContextList::Append(&t->cl, s);
+      }
+    }
+    if (stream_ctx.stream_became_writable()) {
+      if (!grpc_chttp2_list_add_writing_stream(t, s)) {
+        /* already in writing list: drop ref */
+        GRPC_CHTTP2_STREAM_UNREF(s, "chttp2_writing:already_writing");
+      } else {
+        /* ref will be dropped at end of write */
+      }
+    } else {
+      GRPC_CHTTP2_STREAM_UNREF(s, "chttp2_writing:no_write");
+    }
+  }
+
+  ctx.FlushWindowUpdates();
+
+  maybe_initiate_ping(t);
+
+  return ctx.Result();
+}
+
+void grpc_chttp2_end_write(grpc_chttp2_transport* t, grpc_error* error) {
+  GPR_TIMER_SCOPE("grpc_chttp2_end_write", 0);
+  grpc_chttp2_stream* s;
+
+  if (t->channelz_socket != nullptr) {
+    t->channelz_socket->RecordMessagesSent(t->num_messages_in_next_write);
+  }
+  t->num_messages_in_next_write = 0;
+
+  while (grpc_chttp2_list_pop_writing_stream(t, &s)) {
+    if (s->sending_bytes != 0) {
+      update_list(t, s, static_cast<int64_t>(s->sending_bytes),
+                  &s->on_write_finished_cbs, &s->flow_controlled_bytes_written,
+                  GRPC_ERROR_REF(error));
+      s->sending_bytes = 0;
+    }
+    GRPC_CHTTP2_STREAM_UNREF(s, "chttp2_writing:end");
+  }
+  grpc_slice_buffer_reset_and_unref_internal(&t->outbuf);
+  GRPC_ERROR_UNREF(error);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_plugin.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_plugin.cc
new file mode 100644
index 0000000..8e251fa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_plugin.cc	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/inproc/inproc_transport.h"
+#include "src/core/lib/debug/trace.h"
+
+grpc_core::TraceFlag grpc_inproc_trace(false, "inproc");
+
+void grpc_inproc_plugin_init(void) { grpc_inproc_transport_init(); }
+
+void grpc_inproc_plugin_shutdown(void) { grpc_inproc_transport_shutdown(); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.cc
new file mode 100644
index 0000000..7b24347
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.cc	
@@ -0,0 +1,1277 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <string.h>
+#include "src/core/ext/transport/inproc/inproc_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+#define INPROC_LOG(...)                               \
+  do {                                                \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_inproc_trace)) { \
+      gpr_log(__VA_ARGS__);                           \
+    }                                                 \
+  } while (0)
+
+namespace {
+grpc_slice g_empty_slice;
+grpc_slice g_fake_path_key;
+grpc_slice g_fake_path_value;
+grpc_slice g_fake_auth_key;
+grpc_slice g_fake_auth_value;
+
+struct inproc_stream;
+bool cancel_stream_locked(inproc_stream* s, grpc_error* error);
+void maybe_process_ops_locked(inproc_stream* s, grpc_error* error);
+void op_state_machine_locked(inproc_stream* s, grpc_error* error);
+void log_metadata(const grpc_metadata_batch* md_batch, bool is_client,
+                  bool is_initial);
+grpc_error* fill_in_metadata(inproc_stream* s,
+                             const grpc_metadata_batch* metadata,
+                             uint32_t flags, grpc_metadata_batch* out_md,
+                             uint32_t* outflags, bool* markfilled);
+
+struct shared_mu {
+  shared_mu() {
+    // Share one lock between both sides since both sides get affected
+    gpr_mu_init(&mu);
+    gpr_ref_init(&refs, 2);
+  }
+
+  ~shared_mu() { gpr_mu_destroy(&mu); }
+
+  gpr_mu mu;
+  gpr_refcount refs;
+};
+
+struct inproc_transport {
+  inproc_transport(const grpc_transport_vtable* vtable, shared_mu* mu,
+                   bool is_client)
+      : mu(mu),
+        is_client(is_client),
+        state_tracker(is_client ? "inproc_client" : "inproc_server",
+                      GRPC_CHANNEL_READY) {
+    base.vtable = vtable;
+    // Start each side of transport with 2 refs since they each have a ref
+    // to the other
+    gpr_ref_init(&refs, 2);
+  }
+
+  ~inproc_transport() {
+    if (gpr_unref(&mu->refs)) {
+      mu->~shared_mu();
+      gpr_free(mu);
+    }
+  }
+
+  void ref() {
+    INPROC_LOG(GPR_INFO, "ref_transport %p", this);
+    gpr_ref(&refs);
+  }
+
+  void unref() {
+    INPROC_LOG(GPR_INFO, "unref_transport %p", this);
+    if (!gpr_unref(&refs)) {
+      return;
+    }
+    INPROC_LOG(GPR_INFO, "really_destroy_transport %p", this);
+    this->~inproc_transport();
+    gpr_free(this);
+  }
+
+  grpc_transport base;
+  shared_mu* mu;
+  gpr_refcount refs;
+  bool is_client;
+  grpc_core::ConnectivityStateTracker state_tracker;
+  void (*accept_stream_cb)(void* user_data, grpc_transport* transport,
+                           const void* server_data);
+  void* accept_stream_data;
+  bool is_closed = false;
+  struct inproc_transport* other_side;
+  struct inproc_stream* stream_list = nullptr;
+};
+
+struct inproc_stream {
+  inproc_stream(inproc_transport* t, grpc_stream_refcount* refcount,
+                const void* server_data, grpc_core::Arena* arena)
+      : t(t), refs(refcount), arena(arena) {
+    // Ref this stream right now for ctor and list.
+    ref("inproc_init_stream:init");
+    ref("inproc_init_stream:list");
+
+    grpc_metadata_batch_init(&to_read_initial_md);
+    grpc_metadata_batch_init(&to_read_trailing_md);
+    grpc_metadata_batch_init(&write_buffer_initial_md);
+    grpc_metadata_batch_init(&write_buffer_trailing_md);
+
+    stream_list_prev = nullptr;
+    gpr_mu_lock(&t->mu->mu);
+    stream_list_next = t->stream_list;
+    if (t->stream_list) {
+      t->stream_list->stream_list_prev = this;
+    }
+    t->stream_list = this;
+    gpr_mu_unlock(&t->mu->mu);
+
+    if (!server_data) {
+      t->ref();
+      inproc_transport* st = t->other_side;
+      st->ref();
+      other_side = nullptr;  // will get filled in soon
+      // Pass the client-side stream address to the server-side for a ref
+      ref("inproc_init_stream:clt");  // ref it now on behalf of server
+                                      // side to avoid destruction
+      INPROC_LOG(GPR_INFO, "calling accept stream cb %p %p",
+                 st->accept_stream_cb, st->accept_stream_data);
+      (*st->accept_stream_cb)(st->accept_stream_data, &st->base, (void*)this);
+    } else {
+      // This is the server-side and is being called through accept_stream_cb
+      inproc_stream* cs = (inproc_stream*)server_data;
+      other_side = cs;
+      // Ref the server-side stream on behalf of the client now
+      ref("inproc_init_stream:srv");
+
+      // Now we are about to affect the other side, so lock the transport
+      // to make sure that it doesn't get destroyed
+      gpr_mu_lock(&t->mu->mu);
+      cs->other_side = this;
+      // Now transfer from the other side's write_buffer if any to the to_read
+      // buffer
+      if (cs->write_buffer_initial_md_filled) {
+        fill_in_metadata(this, &cs->write_buffer_initial_md,
+                         cs->write_buffer_initial_md_flags, &to_read_initial_md,
+                         &to_read_initial_md_flags, &to_read_initial_md_filled);
+        deadline = GPR_MIN(deadline, cs->write_buffer_deadline);
+        grpc_metadata_batch_clear(&cs->write_buffer_initial_md);
+        cs->write_buffer_initial_md_filled = false;
+      }
+      if (cs->write_buffer_trailing_md_filled) {
+        fill_in_metadata(this, &cs->write_buffer_trailing_md, 0,
+                         &to_read_trailing_md, nullptr,
+                         &to_read_trailing_md_filled);
+        grpc_metadata_batch_clear(&cs->write_buffer_trailing_md);
+        cs->write_buffer_trailing_md_filled = false;
+      }
+      if (cs->write_buffer_cancel_error != GRPC_ERROR_NONE) {
+        cancel_other_error = cs->write_buffer_cancel_error;
+        cs->write_buffer_cancel_error = GRPC_ERROR_NONE;
+        maybe_process_ops_locked(this, cancel_other_error);
+      }
+
+      gpr_mu_unlock(&t->mu->mu);
+    }
+  }
+
+  ~inproc_stream() {
+    GRPC_ERROR_UNREF(write_buffer_cancel_error);
+    GRPC_ERROR_UNREF(cancel_self_error);
+    GRPC_ERROR_UNREF(cancel_other_error);
+
+    if (recv_inited) {
+      grpc_slice_buffer_destroy_internal(&recv_message);
+    }
+
+    t->unref();
+
+    if (closure_at_destroy) {
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure_at_destroy,
+                              GRPC_ERROR_NONE);
+    }
+  }
+
+#ifndef NDEBUG
+#define STREAM_REF(refs, reason) grpc_stream_ref(refs, reason)
+#define STREAM_UNREF(refs, reason) grpc_stream_unref(refs, reason)
+#else
+#define STREAM_REF(refs, reason) grpc_stream_ref(refs)
+#define STREAM_UNREF(refs, reason) grpc_stream_unref(refs)
+#endif
+  void ref(const char* reason) {
+    INPROC_LOG(GPR_INFO, "ref_stream %p %s", this, reason);
+    STREAM_REF(refs, reason);
+  }
+
+  void unref(const char* reason) {
+    INPROC_LOG(GPR_INFO, "unref_stream %p %s", this, reason);
+    STREAM_UNREF(refs, reason);
+  }
+#undef STREAM_REF
+#undef STREAM_UNREF
+
+  inproc_transport* t;
+  grpc_metadata_batch to_read_initial_md;
+  uint32_t to_read_initial_md_flags = 0;
+  bool to_read_initial_md_filled = false;
+  grpc_metadata_batch to_read_trailing_md;
+  bool to_read_trailing_md_filled = false;
+  bool ops_needed = false;
+  // Write buffer used only during gap at init time when client-side
+  // stream is set up but server side stream is not yet set up
+  grpc_metadata_batch write_buffer_initial_md;
+  bool write_buffer_initial_md_filled = false;
+  uint32_t write_buffer_initial_md_flags = 0;
+  grpc_millis write_buffer_deadline = GRPC_MILLIS_INF_FUTURE;
+  grpc_metadata_batch write_buffer_trailing_md;
+  bool write_buffer_trailing_md_filled = false;
+  grpc_error* write_buffer_cancel_error = GRPC_ERROR_NONE;
+
+  struct inproc_stream* other_side;
+  bool other_side_closed = false;               // won't talk anymore
+  bool write_buffer_other_side_closed = false;  // on hold
+  grpc_stream_refcount* refs;
+  grpc_closure* closure_at_destroy = nullptr;
+
+  grpc_core::Arena* arena;
+
+  grpc_transport_stream_op_batch* send_message_op = nullptr;
+  grpc_transport_stream_op_batch* send_trailing_md_op = nullptr;
+  grpc_transport_stream_op_batch* recv_initial_md_op = nullptr;
+  grpc_transport_stream_op_batch* recv_message_op = nullptr;
+  grpc_transport_stream_op_batch* recv_trailing_md_op = nullptr;
+
+  grpc_slice_buffer recv_message;
+  grpc_core::ManualConstructor<grpc_core::SliceBufferByteStream> recv_stream;
+  bool recv_inited = false;
+
+  bool initial_md_sent = false;
+  bool trailing_md_sent = false;
+  bool initial_md_recvd = false;
+  bool trailing_md_recvd = false;
+
+  bool closed = false;
+
+  grpc_error* cancel_self_error = GRPC_ERROR_NONE;
+  grpc_error* cancel_other_error = GRPC_ERROR_NONE;
+
+  grpc_millis deadline = GRPC_MILLIS_INF_FUTURE;
+
+  bool listed = true;
+  struct inproc_stream* stream_list_prev;
+  struct inproc_stream* stream_list_next;
+};
+
+void log_metadata(const grpc_metadata_batch* md_batch, bool is_client,
+                  bool is_initial) {
+  for (grpc_linked_mdelem* md = md_batch->list.head; md != nullptr;
+       md = md->next) {
+    char* key = grpc_slice_to_c_string(GRPC_MDKEY(md->md));
+    char* value = grpc_slice_to_c_string(GRPC_MDVALUE(md->md));
+    gpr_log(GPR_INFO, "INPROC:%s:%s: %s: %s", is_initial ? "HDR" : "TRL",
+            is_client ? "CLI" : "SVR", key, value);
+    gpr_free(key);
+    gpr_free(value);
+  }
+}
+
+grpc_error* fill_in_metadata(inproc_stream* s,
+                             const grpc_metadata_batch* metadata,
+                             uint32_t flags, grpc_metadata_batch* out_md,
+                             uint32_t* outflags, bool* markfilled) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_inproc_trace)) {
+    log_metadata(metadata, s->t->is_client, outflags != nullptr);
+  }
+
+  if (outflags != nullptr) {
+    *outflags = flags;
+  }
+  if (markfilled != nullptr) {
+    *markfilled = true;
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  for (grpc_linked_mdelem* elem = metadata->list.head;
+       (elem != nullptr) && (error == GRPC_ERROR_NONE); elem = elem->next) {
+    grpc_linked_mdelem* nelem =
+        static_cast<grpc_linked_mdelem*>(s->arena->Alloc(sizeof(*nelem)));
+    nelem->md =
+        grpc_mdelem_from_slices(grpc_slice_intern(GRPC_MDKEY(elem->md)),
+                                grpc_slice_intern(GRPC_MDVALUE(elem->md)));
+
+    error = grpc_metadata_batch_link_tail(out_md, nelem);
+  }
+  return error;
+}
+
+int init_stream(grpc_transport* gt, grpc_stream* gs,
+                grpc_stream_refcount* refcount, const void* server_data,
+                grpc_core::Arena* arena) {
+  INPROC_LOG(GPR_INFO, "init_stream %p %p %p", gt, gs, server_data);
+  inproc_transport* t = reinterpret_cast<inproc_transport*>(gt);
+  new (gs) inproc_stream(t, refcount, server_data, arena);
+  return 0;  // return value is not important
+}
+
+void close_stream_locked(inproc_stream* s) {
+  if (!s->closed) {
+    // Release the metadata that we would have written out
+    grpc_metadata_batch_destroy(&s->write_buffer_initial_md);
+    grpc_metadata_batch_destroy(&s->write_buffer_trailing_md);
+
+    if (s->listed) {
+      inproc_stream* p = s->stream_list_prev;
+      inproc_stream* n = s->stream_list_next;
+      if (p != nullptr) {
+        p->stream_list_next = n;
+      } else {
+        s->t->stream_list = n;
+      }
+      if (n != nullptr) {
+        n->stream_list_prev = p;
+      }
+      s->listed = false;
+      s->unref("close_stream:list");
+    }
+    s->closed = true;
+    s->unref("close_stream:closing");
+  }
+}
+
+// This function means that we are done talking/listening to the other side
+void close_other_side_locked(inproc_stream* s, const char* reason) {
+  if (s->other_side != nullptr) {
+    // First release the metadata that came from the other side's arena
+    grpc_metadata_batch_destroy(&s->to_read_initial_md);
+    grpc_metadata_batch_destroy(&s->to_read_trailing_md);
+
+    s->other_side->unref(reason);
+    s->other_side_closed = true;
+    s->other_side = nullptr;
+  } else if (!s->other_side_closed) {
+    s->write_buffer_other_side_closed = true;
+  }
+}
+
+// Call the on_complete closure associated with this stream_op_batch if
+// this stream_op_batch is only one of the pending operations for this
+// stream. This is called when one of the pending operations for the stream
+// is done and about to be NULLed out
+void complete_if_batch_end_locked(inproc_stream* s, grpc_error* error,
+                                  grpc_transport_stream_op_batch* op,
+                                  const char* msg) {
+  int is_sm = static_cast<int>(op == s->send_message_op);
+  int is_stm = static_cast<int>(op == s->send_trailing_md_op);
+  // TODO(vjpai): We should not consider the recv ops here, since they
+  // have their own callbacks.  We should invoke a batch's on_complete
+  // as soon as all of the batch's send ops are complete, even if there
+  // are still recv ops pending.
+  int is_rim = static_cast<int>(op == s->recv_initial_md_op);
+  int is_rm = static_cast<int>(op == s->recv_message_op);
+  int is_rtm = static_cast<int>(op == s->recv_trailing_md_op);
+
+  if ((is_sm + is_stm + is_rim + is_rm + is_rtm) == 1) {
+    INPROC_LOG(GPR_INFO, "%s %p %p %p", msg, s, op, error);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, op->on_complete,
+                            GRPC_ERROR_REF(error));
+  }
+}
+
+void maybe_process_ops_locked(inproc_stream* s, grpc_error* error) {
+  if (s && (error != GRPC_ERROR_NONE || s->ops_needed)) {
+    s->ops_needed = false;
+    op_state_machine_locked(s, error);
+  }
+}
+
+void fail_helper_locked(inproc_stream* s, grpc_error* error) {
+  INPROC_LOG(GPR_INFO, "op_state_machine %p fail_helper", s);
+  // If we're failing this side, we need to make sure that
+  // we also send or have already sent trailing metadata
+  if (!s->trailing_md_sent) {
+    // Send trailing md to the other side indicating cancellation
+    s->trailing_md_sent = true;
+
+    grpc_metadata_batch fake_md;
+    grpc_metadata_batch_init(&fake_md);
+
+    inproc_stream* other = s->other_side;
+    grpc_metadata_batch* dest = (other == nullptr)
+                                    ? &s->write_buffer_trailing_md
+                                    : &other->to_read_trailing_md;
+    bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled
+                                          : &other->to_read_trailing_md_filled;
+    fill_in_metadata(s, &fake_md, 0, dest, nullptr, destfilled);
+    grpc_metadata_batch_destroy(&fake_md);
+
+    if (other != nullptr) {
+      if (other->cancel_other_error == GRPC_ERROR_NONE) {
+        other->cancel_other_error = GRPC_ERROR_REF(error);
+      }
+      maybe_process_ops_locked(other, error);
+    } else if (s->write_buffer_cancel_error == GRPC_ERROR_NONE) {
+      s->write_buffer_cancel_error = GRPC_ERROR_REF(error);
+    }
+  }
+  if (s->recv_initial_md_op) {
+    grpc_error* err;
+    if (!s->t->is_client) {
+      // If this is a server, provide initial metadata with a path and authority
+      // since it expects that as well as no error yet
+      grpc_metadata_batch fake_md;
+      grpc_metadata_batch_init(&fake_md);
+      grpc_linked_mdelem* path_md =
+          static_cast<grpc_linked_mdelem*>(s->arena->Alloc(sizeof(*path_md)));
+      path_md->md = grpc_mdelem_from_slices(g_fake_path_key, g_fake_path_value);
+      GPR_ASSERT(grpc_metadata_batch_link_tail(&fake_md, path_md) ==
+                 GRPC_ERROR_NONE);
+      grpc_linked_mdelem* auth_md =
+          static_cast<grpc_linked_mdelem*>(s->arena->Alloc(sizeof(*auth_md)));
+      auth_md->md = grpc_mdelem_from_slices(g_fake_auth_key, g_fake_auth_value);
+      GPR_ASSERT(grpc_metadata_batch_link_tail(&fake_md, auth_md) ==
+                 GRPC_ERROR_NONE);
+
+      fill_in_metadata(
+          s, &fake_md, 0,
+          s->recv_initial_md_op->payload->recv_initial_metadata
+              .recv_initial_metadata,
+          s->recv_initial_md_op->payload->recv_initial_metadata.recv_flags,
+          nullptr);
+      grpc_metadata_batch_destroy(&fake_md);
+      err = GRPC_ERROR_NONE;
+    } else {
+      err = GRPC_ERROR_REF(error);
+    }
+    if (s->recv_initial_md_op->payload->recv_initial_metadata
+            .trailing_metadata_available != nullptr) {
+      // Set to true unconditionally, because we're failing the call, so even
+      // if we haven't actually seen the send_trailing_metadata op from the
+      // other side, we're going to return trailing metadata anyway.
+      *s->recv_initial_md_op->payload->recv_initial_metadata
+           .trailing_metadata_available = true;
+    }
+    INPROC_LOG(GPR_INFO,
+               "fail_helper %p scheduling initial-metadata-ready %p %p", s,
+               error, err);
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        s->recv_initial_md_op->payload->recv_initial_metadata
+            .recv_initial_metadata_ready,
+        err);
+    // Last use of err so no need to REF and then UNREF it
+
+    complete_if_batch_end_locked(
+        s, error, s->recv_initial_md_op,
+        "fail_helper scheduling recv-initial-metadata-on-complete");
+    s->recv_initial_md_op = nullptr;
+  }
+  if (s->recv_message_op) {
+    INPROC_LOG(GPR_INFO, "fail_helper %p scheduling message-ready %p", s,
+               error);
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        s->recv_message_op->payload->recv_message.recv_message_ready,
+        GRPC_ERROR_REF(error));
+    complete_if_batch_end_locked(
+        s, error, s->recv_message_op,
+        "fail_helper scheduling recv-message-on-complete");
+    s->recv_message_op = nullptr;
+  }
+  if (s->send_message_op) {
+    s->send_message_op->payload->send_message.send_message.reset();
+    complete_if_batch_end_locked(
+        s, error, s->send_message_op,
+        "fail_helper scheduling send-message-on-complete");
+    s->send_message_op = nullptr;
+  }
+  if (s->send_trailing_md_op) {
+    complete_if_batch_end_locked(
+        s, error, s->send_trailing_md_op,
+        "fail_helper scheduling send-trailng-md-on-complete");
+    s->send_trailing_md_op = nullptr;
+  }
+  if (s->recv_trailing_md_op) {
+    INPROC_LOG(GPR_INFO, "fail_helper %p scheduling trailing-metadata-ready %p",
+               s, error);
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        s->recv_trailing_md_op->payload->recv_trailing_metadata
+            .recv_trailing_metadata_ready,
+        GRPC_ERROR_REF(error));
+    INPROC_LOG(GPR_INFO, "fail_helper %p scheduling trailing-md-on-complete %p",
+               s, error);
+    complete_if_batch_end_locked(
+        s, error, s->recv_trailing_md_op,
+        "fail_helper scheduling recv-trailing-metadata-on-complete");
+    s->recv_trailing_md_op = nullptr;
+  }
+  close_other_side_locked(s, "fail_helper:other_side");
+  close_stream_locked(s);
+
+  GRPC_ERROR_UNREF(error);
+}
+
+// TODO(vjpai): It should not be necessary to drain the incoming byte
+// stream and create a new one; instead, we should simply pass the byte
+// stream from the sender directly to the receiver as-is.
+//
+// Note that fixing this will also avoid the assumption in this code
+// that the incoming byte stream's next() call will always return
+// synchronously.  That assumption is true today but may not always be
+// true in the future.
+void message_transfer_locked(inproc_stream* sender, inproc_stream* receiver) {
+  size_t remaining =
+      sender->send_message_op->payload->send_message.send_message->length();
+  if (receiver->recv_inited) {
+    grpc_slice_buffer_destroy_internal(&receiver->recv_message);
+  }
+  grpc_slice_buffer_init(&receiver->recv_message);
+  receiver->recv_inited = true;
+  do {
+    grpc_slice message_slice;
+    grpc_closure unused;
+    GPR_ASSERT(
+        sender->send_message_op->payload->send_message.send_message->Next(
+            SIZE_MAX, &unused));
+    grpc_error* error =
+        sender->send_message_op->payload->send_message.send_message->Pull(
+            &message_slice);
+    if (error != GRPC_ERROR_NONE) {
+      cancel_stream_locked(sender, GRPC_ERROR_REF(error));
+      break;
+    }
+    GPR_ASSERT(error == GRPC_ERROR_NONE);
+    remaining -= GRPC_SLICE_LENGTH(message_slice);
+    grpc_slice_buffer_add(&receiver->recv_message, message_slice);
+  } while (remaining > 0);
+  sender->send_message_op->payload->send_message.send_message.reset();
+
+  receiver->recv_stream.Init(&receiver->recv_message, 0);
+  receiver->recv_message_op->payload->recv_message.recv_message->reset(
+      receiver->recv_stream.get());
+  INPROC_LOG(GPR_INFO, "message_transfer_locked %p scheduling message-ready",
+             receiver);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      receiver->recv_message_op->payload->recv_message.recv_message_ready,
+      GRPC_ERROR_NONE);
+  complete_if_batch_end_locked(
+      sender, GRPC_ERROR_NONE, sender->send_message_op,
+      "message_transfer scheduling sender on_complete");
+  complete_if_batch_end_locked(
+      receiver, GRPC_ERROR_NONE, receiver->recv_message_op,
+      "message_transfer scheduling receiver on_complete");
+
+  receiver->recv_message_op = nullptr;
+  sender->send_message_op = nullptr;
+}
+
+void op_state_machine_locked(inproc_stream* s, grpc_error* error) {
+  // This function gets called when we have contents in the unprocessed reads
+  // Get what we want based on our ops wanted
+  // Schedule our appropriate closures
+  // and then return to ops_needed state if still needed
+
+  grpc_error* new_err = GRPC_ERROR_NONE;
+
+  bool needs_close = false;
+
+  INPROC_LOG(GPR_INFO, "op_state_machine %p", s);
+  // cancellation takes precedence
+  inproc_stream* other = s->other_side;
+
+  if (s->cancel_self_error != GRPC_ERROR_NONE) {
+    fail_helper_locked(s, GRPC_ERROR_REF(s->cancel_self_error));
+    goto done;
+  } else if (s->cancel_other_error != GRPC_ERROR_NONE) {
+    fail_helper_locked(s, GRPC_ERROR_REF(s->cancel_other_error));
+    goto done;
+  } else if (error != GRPC_ERROR_NONE) {
+    fail_helper_locked(s, GRPC_ERROR_REF(error));
+    goto done;
+  }
+
+  if (s->send_message_op && other) {
+    if (other->recv_message_op) {
+      message_transfer_locked(s, other);
+      maybe_process_ops_locked(other, GRPC_ERROR_NONE);
+    } else if (!s->t->is_client && s->trailing_md_sent) {
+      // A server send will never be matched if the server already sent status
+      s->send_message_op->payload->send_message.send_message.reset();
+      complete_if_batch_end_locked(
+          s, GRPC_ERROR_NONE, s->send_message_op,
+          "op_state_machine scheduling send-message-on-complete");
+      s->send_message_op = nullptr;
+    }
+  }
+  // Pause a send trailing metadata if there is still an outstanding
+  // send message unless we know that the send message will never get
+  // matched to a receive. This happens on the client if the server has
+  // already sent status or on the server if the client has requested
+  // status
+  if (s->send_trailing_md_op &&
+      (!s->send_message_op ||
+       (s->t->is_client &&
+        (s->trailing_md_recvd || s->to_read_trailing_md_filled)) ||
+       (!s->t->is_client && other &&
+        (other->trailing_md_recvd || other->to_read_trailing_md_filled ||
+         other->recv_trailing_md_op)))) {
+    grpc_metadata_batch* dest = (other == nullptr)
+                                    ? &s->write_buffer_trailing_md
+                                    : &other->to_read_trailing_md;
+    bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled
+                                          : &other->to_read_trailing_md_filled;
+    if (*destfilled || s->trailing_md_sent) {
+      // The buffer is already in use; that's an error!
+      INPROC_LOG(GPR_INFO, "Extra trailing metadata %p", s);
+      new_err = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Extra trailing metadata");
+      fail_helper_locked(s, GRPC_ERROR_REF(new_err));
+      goto done;
+    } else {
+      if (!other || !other->closed) {
+        fill_in_metadata(s,
+                         s->send_trailing_md_op->payload->send_trailing_metadata
+                             .send_trailing_metadata,
+                         0, dest, nullptr, destfilled);
+      }
+      s->trailing_md_sent = true;
+      if (!s->t->is_client && s->trailing_md_recvd && s->recv_trailing_md_op) {
+        INPROC_LOG(GPR_INFO,
+                   "op_state_machine %p scheduling trailing-metadata-ready", s);
+        grpc_core::ExecCtx::Run(
+            DEBUG_LOCATION,
+            s->recv_trailing_md_op->payload->recv_trailing_metadata
+                .recv_trailing_metadata_ready,
+            GRPC_ERROR_NONE);
+        INPROC_LOG(GPR_INFO,
+                   "op_state_machine %p scheduling trailing-md-on-complete", s);
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                                s->recv_trailing_md_op->on_complete,
+                                GRPC_ERROR_NONE);
+        s->recv_trailing_md_op = nullptr;
+        needs_close = true;
+      }
+    }
+    maybe_process_ops_locked(other, GRPC_ERROR_NONE);
+    complete_if_batch_end_locked(
+        s, GRPC_ERROR_NONE, s->send_trailing_md_op,
+        "op_state_machine scheduling send-trailing-metadata-on-complete");
+    s->send_trailing_md_op = nullptr;
+  }
+  if (s->recv_initial_md_op) {
+    if (s->initial_md_recvd) {
+      new_err =
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("Already recvd initial md");
+      INPROC_LOG(
+          GPR_INFO,
+          "op_state_machine %p scheduling on_complete errors for already "
+          "recvd initial md %p",
+          s, new_err);
+      fail_helper_locked(s, GRPC_ERROR_REF(new_err));
+      goto done;
+    }
+
+    if (s->to_read_initial_md_filled) {
+      s->initial_md_recvd = true;
+      new_err = fill_in_metadata(
+          s, &s->to_read_initial_md, s->to_read_initial_md_flags,
+          s->recv_initial_md_op->payload->recv_initial_metadata
+              .recv_initial_metadata,
+          s->recv_initial_md_op->payload->recv_initial_metadata.recv_flags,
+          nullptr);
+      s->recv_initial_md_op->payload->recv_initial_metadata
+          .recv_initial_metadata->deadline = s->deadline;
+      if (s->recv_initial_md_op->payload->recv_initial_metadata
+              .trailing_metadata_available != nullptr) {
+        *s->recv_initial_md_op->payload->recv_initial_metadata
+             .trailing_metadata_available =
+            (other != nullptr && other->send_trailing_md_op != nullptr);
+      }
+      grpc_metadata_batch_clear(&s->to_read_initial_md);
+      s->to_read_initial_md_filled = false;
+      INPROC_LOG(GPR_INFO,
+                 "op_state_machine %p scheduling initial-metadata-ready %p", s,
+                 new_err);
+      grpc_core::ExecCtx::Run(
+          DEBUG_LOCATION,
+          s->recv_initial_md_op->payload->recv_initial_metadata
+              .recv_initial_metadata_ready,
+          GRPC_ERROR_REF(new_err));
+      complete_if_batch_end_locked(
+          s, new_err, s->recv_initial_md_op,
+          "op_state_machine scheduling recv-initial-metadata-on-complete");
+      s->recv_initial_md_op = nullptr;
+
+      if (new_err != GRPC_ERROR_NONE) {
+        INPROC_LOG(GPR_INFO,
+                   "op_state_machine %p scheduling on_complete errors2 %p", s,
+                   new_err);
+        fail_helper_locked(s, GRPC_ERROR_REF(new_err));
+        goto done;
+      }
+    }
+  }
+  if (s->recv_message_op) {
+    if (other && other->send_message_op) {
+      message_transfer_locked(other, s);
+      maybe_process_ops_locked(other, GRPC_ERROR_NONE);
+    }
+  }
+  if (s->to_read_trailing_md_filled) {
+    if (s->trailing_md_recvd) {
+      new_err =
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("Already recvd trailing md");
+      INPROC_LOG(
+          GPR_INFO,
+          "op_state_machine %p scheduling on_complete errors for already "
+          "recvd trailing md %p",
+          s, new_err);
+      fail_helper_locked(s, GRPC_ERROR_REF(new_err));
+      goto done;
+    }
+    if (s->recv_message_op != nullptr) {
+      // This message needs to be wrapped up because it will never be
+      // satisfied
+      *s->recv_message_op->payload->recv_message.recv_message = nullptr;
+      INPROC_LOG(GPR_INFO, "op_state_machine %p scheduling message-ready", s);
+      grpc_core::ExecCtx::Run(
+          DEBUG_LOCATION,
+          s->recv_message_op->payload->recv_message.recv_message_ready,
+          GRPC_ERROR_NONE);
+      complete_if_batch_end_locked(
+          s, new_err, s->recv_message_op,
+          "op_state_machine scheduling recv-message-on-complete");
+      s->recv_message_op = nullptr;
+    }
+    if ((s->trailing_md_sent || s->t->is_client) && s->send_message_op) {
+      // Nothing further will try to receive from this stream, so finish off
+      // any outstanding send_message op
+      s->send_message_op->payload->send_message.send_message.reset();
+      complete_if_batch_end_locked(
+          s, new_err, s->send_message_op,
+          "op_state_machine scheduling send-message-on-complete");
+      s->send_message_op = nullptr;
+    }
+    if (s->recv_trailing_md_op != nullptr) {
+      // We wanted trailing metadata and we got it
+      s->trailing_md_recvd = true;
+      new_err =
+          fill_in_metadata(s, &s->to_read_trailing_md, 0,
+                           s->recv_trailing_md_op->payload
+                               ->recv_trailing_metadata.recv_trailing_metadata,
+                           nullptr, nullptr);
+      grpc_metadata_batch_clear(&s->to_read_trailing_md);
+      s->to_read_trailing_md_filled = false;
+
+      // We should schedule the recv_trailing_md_op completion if
+      // 1. this stream is the client-side
+      // 2. this stream is the server-side AND has already sent its trailing md
+      //    (If the server hasn't already sent its trailing md, it doesn't have
+      //     a final status, so don't mark this op complete)
+      if (s->t->is_client || s->trailing_md_sent) {
+        INPROC_LOG(GPR_INFO,
+                   "op_state_machine %p scheduling trailing-md-on-complete %p",
+                   s, new_err);
+        grpc_core::ExecCtx::Run(
+            DEBUG_LOCATION,
+            s->recv_trailing_md_op->payload->recv_trailing_metadata
+                .recv_trailing_metadata_ready,
+            GRPC_ERROR_REF(new_err));
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                                s->recv_trailing_md_op->on_complete,
+                                GRPC_ERROR_REF(new_err));
+        s->recv_trailing_md_op = nullptr;
+        needs_close = s->trailing_md_sent;
+      } else {
+        INPROC_LOG(GPR_INFO,
+                   "op_state_machine %p server needs to delay handling "
+                   "trailing-md-on-complete %p",
+                   s, new_err);
+      }
+    } else {
+      INPROC_LOG(
+          GPR_INFO,
+          "op_state_machine %p has trailing md but not yet waiting for it", s);
+    }
+  }
+  if (s->trailing_md_recvd && s->recv_message_op) {
+    // No further message will come on this stream, so finish off the
+    // recv_message_op
+    INPROC_LOG(GPR_INFO, "op_state_machine %p scheduling message-ready", s);
+    *s->recv_message_op->payload->recv_message.recv_message = nullptr;
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        s->recv_message_op->payload->recv_message.recv_message_ready,
+        GRPC_ERROR_NONE);
+    complete_if_batch_end_locked(
+        s, new_err, s->recv_message_op,
+        "op_state_machine scheduling recv-message-on-complete");
+    s->recv_message_op = nullptr;
+  }
+  if (s->trailing_md_recvd && (s->trailing_md_sent || s->t->is_client) &&
+      s->send_message_op) {
+    // Nothing further will try to receive from this stream, so finish off
+    // any outstanding send_message op
+    s->send_message_op->payload->send_message.send_message.reset();
+    complete_if_batch_end_locked(
+        s, new_err, s->send_message_op,
+        "op_state_machine scheduling send-message-on-complete");
+    s->send_message_op = nullptr;
+  }
+  if (s->send_message_op || s->send_trailing_md_op || s->recv_initial_md_op ||
+      s->recv_message_op || s->recv_trailing_md_op) {
+    // Didn't get the item we wanted so we still need to get
+    // rescheduled
+    INPROC_LOG(
+        GPR_INFO, "op_state_machine %p still needs closure %p %p %p %p %p", s,
+        s->send_message_op, s->send_trailing_md_op, s->recv_initial_md_op,
+        s->recv_message_op, s->recv_trailing_md_op);
+    s->ops_needed = true;
+  }
+done:
+  if (needs_close) {
+    close_other_side_locked(s, "op_state_machine");
+    close_stream_locked(s);
+  }
+  GRPC_ERROR_UNREF(new_err);
+}
+
+bool cancel_stream_locked(inproc_stream* s, grpc_error* error) {
+  bool ret = false;  // was the cancel accepted
+  INPROC_LOG(GPR_INFO, "cancel_stream %p with %s", s, grpc_error_string(error));
+  if (s->cancel_self_error == GRPC_ERROR_NONE) {
+    ret = true;
+    s->cancel_self_error = GRPC_ERROR_REF(error);
+    // Catch current value of other before it gets closed off
+    inproc_stream* other = s->other_side;
+    maybe_process_ops_locked(s, s->cancel_self_error);
+    // Send trailing md to the other side indicating cancellation, even if we
+    // already have
+    s->trailing_md_sent = true;
+
+    grpc_metadata_batch cancel_md;
+    grpc_metadata_batch_init(&cancel_md);
+
+    grpc_metadata_batch* dest = (other == nullptr)
+                                    ? &s->write_buffer_trailing_md
+                                    : &other->to_read_trailing_md;
+    bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled
+                                          : &other->to_read_trailing_md_filled;
+    fill_in_metadata(s, &cancel_md, 0, dest, nullptr, destfilled);
+    grpc_metadata_batch_destroy(&cancel_md);
+
+    if (other != nullptr) {
+      if (other->cancel_other_error == GRPC_ERROR_NONE) {
+        other->cancel_other_error = GRPC_ERROR_REF(s->cancel_self_error);
+      }
+      maybe_process_ops_locked(other, other->cancel_other_error);
+    } else if (s->write_buffer_cancel_error == GRPC_ERROR_NONE) {
+      s->write_buffer_cancel_error = GRPC_ERROR_REF(s->cancel_self_error);
+    }
+
+    // if we are a server and already received trailing md but
+    // couldn't complete that because we hadn't yet sent out trailing
+    // md, now's the chance
+    if (!s->t->is_client && s->trailing_md_recvd && s->recv_trailing_md_op) {
+      grpc_core::ExecCtx::Run(
+          DEBUG_LOCATION,
+          s->recv_trailing_md_op->payload->recv_trailing_metadata
+              .recv_trailing_metadata_ready,
+          GRPC_ERROR_REF(s->cancel_self_error));
+      complete_if_batch_end_locked(
+          s, s->cancel_self_error, s->recv_trailing_md_op,
+          "cancel_stream scheduling trailing-md-on-complete");
+      s->recv_trailing_md_op = nullptr;
+    }
+  }
+
+  close_other_side_locked(s, "cancel_stream:other_side");
+  close_stream_locked(s);
+
+  GRPC_ERROR_UNREF(error);
+  return ret;
+}
+
+void do_nothing(void* /*arg*/, grpc_error* /*error*/) {}
+
+void perform_stream_op(grpc_transport* gt, grpc_stream* gs,
+                       grpc_transport_stream_op_batch* op) {
+  INPROC_LOG(GPR_INFO, "perform_stream_op %p %p %p", gt, gs, op);
+  inproc_stream* s = reinterpret_cast<inproc_stream*>(gs);
+  gpr_mu* mu = &s->t->mu->mu;  // save aside in case s gets closed
+  gpr_mu_lock(mu);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_inproc_trace)) {
+    if (op->send_initial_metadata) {
+      log_metadata(op->payload->send_initial_metadata.send_initial_metadata,
+                   s->t->is_client, true);
+    }
+    if (op->send_trailing_metadata) {
+      log_metadata(op->payload->send_trailing_metadata.send_trailing_metadata,
+                   s->t->is_client, false);
+    }
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_closure* on_complete = op->on_complete;
+  // TODO(roth): This is a hack needed because we use data inside of the
+  // closure itself to do the barrier calculation (i.e., to ensure that
+  // we don't schedule the closure until all ops in the batch have been
+  // completed).  This can go away once we move to a new C++ closure API
+  // that provides the ability to create a barrier closure.
+  if (on_complete == nullptr) {
+    on_complete = GRPC_CLOSURE_INIT(&op->handler_private.closure, do_nothing,
+                                    nullptr, grpc_schedule_on_exec_ctx);
+  }
+
+  if (op->cancel_stream) {
+    // Call cancel_stream_locked without ref'ing the cancel_error because
+    // this function is responsible to make sure that that field gets unref'ed
+    cancel_stream_locked(s, op->payload->cancel_stream.cancel_error);
+    // this op can complete without an error
+  } else if (s->cancel_self_error != GRPC_ERROR_NONE) {
+    // already self-canceled so still give it an error
+    error = GRPC_ERROR_REF(s->cancel_self_error);
+  } else {
+    INPROC_LOG(GPR_INFO, "perform_stream_op %p %s%s%s%s%s%s%s", s,
+               s->t->is_client ? "client" : "server",
+               op->send_initial_metadata ? " send_initial_metadata" : "",
+               op->send_message ? " send_message" : "",
+               op->send_trailing_metadata ? " send_trailing_metadata" : "",
+               op->recv_initial_metadata ? " recv_initial_metadata" : "",
+               op->recv_message ? " recv_message" : "",
+               op->recv_trailing_metadata ? " recv_trailing_metadata" : "");
+  }
+
+  inproc_stream* other = s->other_side;
+  if (error == GRPC_ERROR_NONE &&
+      (op->send_initial_metadata || op->send_trailing_metadata)) {
+    if (s->t->is_closed) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Endpoint already shutdown");
+    }
+    if (error == GRPC_ERROR_NONE && op->send_initial_metadata) {
+      grpc_metadata_batch* dest = (other == nullptr)
+                                      ? &s->write_buffer_initial_md
+                                      : &other->to_read_initial_md;
+      uint32_t* destflags = (other == nullptr)
+                                ? &s->write_buffer_initial_md_flags
+                                : &other->to_read_initial_md_flags;
+      bool* destfilled = (other == nullptr) ? &s->write_buffer_initial_md_filled
+                                            : &other->to_read_initial_md_filled;
+      if (*destfilled || s->initial_md_sent) {
+        // The buffer is already in use; that's an error!
+        INPROC_LOG(GPR_INFO, "Extra initial metadata %p", s);
+        error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Extra initial metadata");
+      } else {
+        if (!s->other_side_closed) {
+          fill_in_metadata(
+              s, op->payload->send_initial_metadata.send_initial_metadata,
+              op->payload->send_initial_metadata.send_initial_metadata_flags,
+              dest, destflags, destfilled);
+        }
+        if (s->t->is_client) {
+          grpc_millis* dl =
+              (other == nullptr) ? &s->write_buffer_deadline : &other->deadline;
+          *dl = GPR_MIN(*dl, op->payload->send_initial_metadata
+                                 .send_initial_metadata->deadline);
+          s->initial_md_sent = true;
+        }
+      }
+      maybe_process_ops_locked(other, error);
+    }
+  }
+
+  if (error == GRPC_ERROR_NONE &&
+      (op->send_message || op->send_trailing_metadata ||
+       op->recv_initial_metadata || op->recv_message ||
+       op->recv_trailing_metadata)) {
+    // Mark ops that need to be processed by the state machine
+    if (op->send_message) {
+      s->send_message_op = op;
+    }
+    if (op->send_trailing_metadata) {
+      s->send_trailing_md_op = op;
+    }
+    if (op->recv_initial_metadata) {
+      s->recv_initial_md_op = op;
+    }
+    if (op->recv_message) {
+      s->recv_message_op = op;
+    }
+    if (op->recv_trailing_metadata) {
+      s->recv_trailing_md_op = op;
+    }
+
+    // We want to initiate the state machine if:
+    // 1. We want to send a message and the other side wants to receive
+    // 2. We want to send trailing metadata and there isn't an unmatched send
+    //    or the other side wants trailing metadata
+    // 3. We want initial metadata and the other side has sent it
+    // 4. We want to receive a message and there is a message ready
+    // 5. There is trailing metadata, even if nothing specifically wants
+    //    that because that can shut down the receive message as well
+    if ((op->send_message && other && other->recv_message_op != nullptr) ||
+        (op->send_trailing_metadata &&
+         (!s->send_message_op || (other && other->recv_trailing_md_op))) ||
+        (op->recv_initial_metadata && s->to_read_initial_md_filled) ||
+        (op->recv_message && other && other->send_message_op != nullptr) ||
+        (s->to_read_trailing_md_filled || s->trailing_md_recvd)) {
+      op_state_machine_locked(s, error);
+    } else {
+      s->ops_needed = true;
+    }
+  } else {
+    if (error != GRPC_ERROR_NONE) {
+      // Consume any send message that was sent here but that we are not pushing
+      // to the other side
+      if (op->send_message) {
+        op->payload->send_message.send_message.reset();
+      }
+      // Schedule op's closures that we didn't push to op state machine
+      if (op->recv_initial_metadata) {
+        if (op->payload->recv_initial_metadata.trailing_metadata_available !=
+            nullptr) {
+          // Set to true unconditionally, because we're failing the call, so
+          // even if we haven't actually seen the send_trailing_metadata op
+          // from the other side, we're going to return trailing metadata
+          // anyway.
+          *op->payload->recv_initial_metadata.trailing_metadata_available =
+              true;
+        }
+        INPROC_LOG(
+            GPR_INFO,
+            "perform_stream_op error %p scheduling initial-metadata-ready %p",
+            s, error);
+        grpc_core::ExecCtx::Run(
+            DEBUG_LOCATION,
+            op->payload->recv_initial_metadata.recv_initial_metadata_ready,
+            GRPC_ERROR_REF(error));
+      }
+      if (op->recv_message) {
+        INPROC_LOG(
+            GPR_INFO,
+            "perform_stream_op error %p scheduling recv message-ready %p", s,
+            error);
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                                op->payload->recv_message.recv_message_ready,
+                                GRPC_ERROR_REF(error));
+      }
+      if (op->recv_trailing_metadata) {
+        INPROC_LOG(
+            GPR_INFO,
+            "perform_stream_op error %p scheduling trailing-metadata-ready %p",
+            s, error);
+        grpc_core::ExecCtx::Run(
+            DEBUG_LOCATION,
+            op->payload->recv_trailing_metadata.recv_trailing_metadata_ready,
+            GRPC_ERROR_REF(error));
+      }
+    }
+    INPROC_LOG(GPR_INFO, "perform_stream_op %p scheduling on_complete %p", s,
+               error);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_complete, GRPC_ERROR_REF(error));
+  }
+  gpr_mu_unlock(mu);
+  GRPC_ERROR_UNREF(error);
+}
+
+void close_transport_locked(inproc_transport* t) {
+  INPROC_LOG(GPR_INFO, "close_transport %p %d", t, t->is_closed);
+  t->state_tracker.SetState(GRPC_CHANNEL_SHUTDOWN, "close transport");
+  if (!t->is_closed) {
+    t->is_closed = true;
+    /* Also end all streams on this transport */
+    while (t->stream_list != nullptr) {
+      // cancel_stream_locked also adjusts stream list
+      cancel_stream_locked(
+          t->stream_list,
+          grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING("Transport closed"),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE));
+    }
+  }
+}
+
+void perform_transport_op(grpc_transport* gt, grpc_transport_op* op) {
+  inproc_transport* t = reinterpret_cast<inproc_transport*>(gt);
+  INPROC_LOG(GPR_INFO, "perform_transport_op %p %p", t, op);
+  gpr_mu_lock(&t->mu->mu);
+  if (op->start_connectivity_watch != nullptr) {
+    t->state_tracker.AddWatcher(op->start_connectivity_watch_state,
+                                std::move(op->start_connectivity_watch));
+  }
+  if (op->stop_connectivity_watch != nullptr) {
+    t->state_tracker.RemoveWatcher(op->stop_connectivity_watch);
+  }
+  if (op->set_accept_stream) {
+    t->accept_stream_cb = op->set_accept_stream_fn;
+    t->accept_stream_data = op->set_accept_stream_user_data;
+  }
+  if (op->on_consumed) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, op->on_consumed, GRPC_ERROR_NONE);
+  }
+
+  bool do_close = false;
+  if (op->goaway_error != GRPC_ERROR_NONE) {
+    do_close = true;
+    GRPC_ERROR_UNREF(op->goaway_error);
+  }
+  if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+    do_close = true;
+    GRPC_ERROR_UNREF(op->disconnect_with_error);
+  }
+
+  if (do_close) {
+    close_transport_locked(t);
+  }
+  gpr_mu_unlock(&t->mu->mu);
+}
+
+void destroy_stream(grpc_transport* /*gt*/, grpc_stream* gs,
+                    grpc_closure* then_schedule_closure) {
+  INPROC_LOG(GPR_INFO, "destroy_stream %p %p", gs, then_schedule_closure);
+  inproc_stream* s = reinterpret_cast<inproc_stream*>(gs);
+  s->closure_at_destroy = then_schedule_closure;
+  s->~inproc_stream();
+}
+
+void destroy_transport(grpc_transport* gt) {
+  inproc_transport* t = reinterpret_cast<inproc_transport*>(gt);
+  INPROC_LOG(GPR_INFO, "destroy_transport %p", t);
+  gpr_mu_lock(&t->mu->mu);
+  close_transport_locked(t);
+  gpr_mu_unlock(&t->mu->mu);
+  t->other_side->unref();
+  t->unref();
+}
+
+/*******************************************************************************
+ * INTEGRATION GLUE
+ */
+
+void set_pollset(grpc_transport* /*gt*/, grpc_stream* /*gs*/,
+                 grpc_pollset* /*pollset*/) {
+  // Nothing to do here
+}
+
+void set_pollset_set(grpc_transport* /*gt*/, grpc_stream* /*gs*/,
+                     grpc_pollset_set* /*pollset_set*/) {
+  // Nothing to do here
+}
+
+grpc_endpoint* get_endpoint(grpc_transport* /*t*/) { return nullptr; }
+
+const grpc_transport_vtable inproc_vtable = {
+    sizeof(inproc_stream), "inproc",        init_stream,
+    set_pollset,           set_pollset_set, perform_stream_op,
+    perform_transport_op,  destroy_stream,  destroy_transport,
+    get_endpoint};
+
+/*******************************************************************************
+ * Main inproc transport functions
+ */
+void inproc_transports_create(grpc_transport** server_transport,
+                              const grpc_channel_args* /*server_args*/,
+                              grpc_transport** client_transport,
+                              const grpc_channel_args* /*client_args*/) {
+  INPROC_LOG(GPR_INFO, "inproc_transports_create");
+  shared_mu* mu = new (gpr_malloc(sizeof(*mu))) shared_mu();
+  inproc_transport* st = new (gpr_malloc(sizeof(*st)))
+      inproc_transport(&inproc_vtable, mu, /*is_client=*/false);
+  inproc_transport* ct = new (gpr_malloc(sizeof(*ct)))
+      inproc_transport(&inproc_vtable, mu, /*is_client=*/true);
+  st->other_side = ct;
+  ct->other_side = st;
+  *server_transport = reinterpret_cast<grpc_transport*>(st);
+  *client_transport = reinterpret_cast<grpc_transport*>(ct);
+}
+}  // namespace
+
+/*******************************************************************************
+ * GLOBAL INIT AND DESTROY
+ */
+void grpc_inproc_transport_init(void) {
+  grpc_core::ExecCtx exec_ctx;
+  g_empty_slice = grpc_core::ExternallyManagedSlice();
+
+  grpc_slice key_tmp = grpc_slice_from_static_string(":path");
+  g_fake_path_key = grpc_slice_intern(key_tmp);
+  grpc_slice_unref_internal(key_tmp);
+
+  g_fake_path_value = grpc_slice_from_static_string("/");
+
+  grpc_slice auth_tmp = grpc_slice_from_static_string(":authority");
+  g_fake_auth_key = grpc_slice_intern(auth_tmp);
+  grpc_slice_unref_internal(auth_tmp);
+
+  g_fake_auth_value = grpc_slice_from_static_string("inproc-fail");
+}
+
+grpc_channel* grpc_inproc_channel_create(grpc_server* server,
+                                         grpc_channel_args* args,
+                                         void* /*reserved*/) {
+  GRPC_API_TRACE("grpc_inproc_channel_create(server=%p, args=%p)", 2,
+                 (server, args));
+
+  grpc_core::ExecCtx exec_ctx;
+
+  // Remove max_connection_idle and max_connection_age channel arguments since
+  // those do not apply to inproc transports.
+  const char* args_to_remove[] = {GRPC_ARG_MAX_CONNECTION_IDLE_MS,
+                                  GRPC_ARG_MAX_CONNECTION_AGE_MS};
+  const grpc_channel_args* server_args = grpc_channel_args_copy_and_remove(
+      grpc_server_get_channel_args(server), args_to_remove,
+      GPR_ARRAY_SIZE(args_to_remove));
+
+  // Add a default authority channel argument for the client
+  grpc_arg default_authority_arg;
+  default_authority_arg.type = GRPC_ARG_STRING;
+  default_authority_arg.key = (char*)GRPC_ARG_DEFAULT_AUTHORITY;
+  default_authority_arg.value.string = (char*)"inproc.authority";
+  grpc_channel_args* client_args =
+      grpc_channel_args_copy_and_add(args, &default_authority_arg, 1);
+
+  grpc_transport* server_transport;
+  grpc_transport* client_transport;
+  inproc_transports_create(&server_transport, server_args, &client_transport,
+                           client_args);
+
+  // TODO(ncteisen): design and support channelz GetSocket for inproc.
+  grpc_server_setup_transport(server, server_transport, nullptr, server_args,
+                              nullptr);
+  grpc_channel* channel = grpc_channel_create(
+      "inproc", client_args, GRPC_CLIENT_DIRECT_CHANNEL, client_transport);
+
+  // Free up created channel args
+  grpc_channel_args_destroy(server_args);
+  grpc_channel_args_destroy(client_args);
+
+  // Now finish scheduled operations
+
+  return channel;
+}
+
+void grpc_inproc_transport_shutdown(void) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_slice_unref_internal(g_empty_slice);
+  grpc_slice_unref_internal(g_fake_path_key);
+  grpc_slice_unref_internal(g_fake_path_value);
+  grpc_slice_unref_internal(g_fake_auth_key);
+  grpc_slice_unref_internal(g_fake_auth_value);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.h
new file mode 100644
index 0000000..049d140
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/transport/inproc/inproc_transport.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H
+#define GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport_impl.h"
+
+grpc_channel* grpc_inproc_channel_create(grpc_server* server,
+                                         grpc_channel_args* args,
+                                         void* reserved);
+
+extern grpc_core::TraceFlag grpc_inproc_trace;
+
+void grpc_inproc_transport_init(void);
+void grpc_inproc_transport_shutdown(void);
+
+#endif /* GRPC_CORE_EXT_TRANSPORT_INPROC_INPROC_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.c
new file mode 100644
index 0000000..e8991e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/deprecation.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h
new file mode 100644
index 0000000..4e620ae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/deprecation.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_
+#define ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_ANNOTATIONS_DEPRECATION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.c
new file mode 100644
index 0000000..28b43c4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.c	
@@ -0,0 +1,47 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/resource.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_annotations_ResourceAnnotation__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_annotations_ResourceAnnotation_msginit = {
+  NULL,
+  &envoy_annotations_ResourceAnnotation__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.h
new file mode 100644
index 0000000..9902a17
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/annotations/resource.upb.h	
@@ -0,0 +1,78 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/annotations/resource.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_
+#define ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_annotations_ResourceAnnotation;
+typedef struct envoy_annotations_ResourceAnnotation envoy_annotations_ResourceAnnotation;
+extern const upb_msglayout envoy_annotations_ResourceAnnotation_msginit;
+
+
+/* envoy.annotations.ResourceAnnotation */
+
+UPB_INLINE envoy_annotations_ResourceAnnotation *envoy_annotations_ResourceAnnotation_new(upb_arena *arena) {
+  return (envoy_annotations_ResourceAnnotation *)upb_msg_new(&envoy_annotations_ResourceAnnotation_msginit, arena);
+}
+UPB_INLINE envoy_annotations_ResourceAnnotation *envoy_annotations_ResourceAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_annotations_ResourceAnnotation *ret = envoy_annotations_ResourceAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_annotations_ResourceAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_annotations_ResourceAnnotation_serialize(const envoy_annotations_ResourceAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_annotations_ResourceAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_annotations_ResourceAnnotation_type(const envoy_annotations_ResourceAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_annotations_ResourceAnnotation_set_type(envoy_annotations_ResourceAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_ANNOTATIONS_RESOURCE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.c
new file mode 100644
index 0000000..2a809ad
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.c	
@@ -0,0 +1,302 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/auth/cert.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h"
+#else
+  #include  "envoy/api/v2/auth/cert.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/string.upb.h"
+#else
+  #include  "envoy/type/matcher/string.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h"
+#else
+  #include  "udpa/annotations/sensitive.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_api_v2_auth_TlsParameters__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 14, 1},
+  {3, UPB_SIZE(16, 16), 0, 0, 9, 3},
+  {4, UPB_SIZE(20, 24), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_auth_TlsParameters_msginit = {
+  NULL,
+  &envoy_api_v2_auth_TlsParameters__fields[0],
+  UPB_SIZE(24, 32), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_PrivateKeyProvider_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_PrivateKeyProvider__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_PrivateKeyProvider_msginit = {
+  &envoy_api_v2_auth_PrivateKeyProvider_submsgs[0],
+  &envoy_api_v2_auth_PrivateKeyProvider__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_TlsCertificate_submsgs[6] = {
+  &envoy_api_v2_auth_PrivateKeyProvider_msginit,
+  &envoy_api_v2_core_DataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_TlsCertificate__fields[6] = {
+  {1, UPB_SIZE(0, 0), 0, 1, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {4, UPB_SIZE(12, 24), 0, 1, 11, 1},
+  {5, UPB_SIZE(20, 40), 0, 1, 11, 3},
+  {6, UPB_SIZE(16, 32), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_TlsCertificate_msginit = {
+  &envoy_api_v2_auth_TlsCertificate_submsgs[0],
+  &envoy_api_v2_auth_TlsCertificate__fields[0],
+  UPB_SIZE(24, 48), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_TlsSessionTicketKeys_submsgs[1] = {
+  &envoy_api_v2_core_DataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_TlsSessionTicketKeys__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_auth_TlsSessionTicketKeys_msginit = {
+  &envoy_api_v2_auth_TlsSessionTicketKeys_submsgs[0],
+  &envoy_api_v2_auth_TlsSessionTicketKeys__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_CertificateValidationContext_submsgs[5] = {
+  &envoy_api_v2_core_DataSource_msginit,
+  &envoy_type_matcher_StringMatcher_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_CertificateValidationContext__fields[10] = {
+  {1, UPB_SIZE(12, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(28, 48), 0, 0, 9, 3},
+  {3, UPB_SIZE(32, 56), 0, 0, 9, 3},
+  {4, UPB_SIZE(36, 64), 0, 0, 9, 3},
+  {5, UPB_SIZE(16, 24), 0, 2, 11, 1},
+  {6, UPB_SIZE(20, 32), 0, 2, 11, 1},
+  {7, UPB_SIZE(24, 40), 0, 0, 11, 1},
+  {8, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {9, UPB_SIZE(40, 72), 0, 1, 11, 3},
+  {10, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_CertificateValidationContext_msginit = {
+  &envoy_api_v2_auth_CertificateValidationContext_submsgs[0],
+  &envoy_api_v2_auth_CertificateValidationContext__fields[0],
+  UPB_SIZE(48, 80), 10, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_CommonTlsContext_submsgs[6] = {
+  &envoy_api_v2_auth_CertificateValidationContext_msginit,
+  &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit,
+  &envoy_api_v2_auth_SdsSecretConfig_msginit,
+  &envoy_api_v2_auth_TlsCertificate_msginit,
+  &envoy_api_v2_auth_TlsParameters_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_CommonTlsContext__fields[7] = {
+  {1, UPB_SIZE(0, 0), 0, 4, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 3, 11, 3},
+  {3, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 0, 11, 1},
+  {4, UPB_SIZE(8, 16), 0, 0, 9, 3},
+  {6, UPB_SIZE(12, 24), 0, 2, 11, 3},
+  {7, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 2, 11, 1},
+  {8, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_CommonTlsContext_msginit = {
+  &envoy_api_v2_auth_CommonTlsContext_submsgs[0],
+  &envoy_api_v2_auth_CommonTlsContext__fields[0],
+  UPB_SIZE(24, 48), 7, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_submsgs[2] = {
+  &envoy_api_v2_auth_CertificateValidationContext_msginit,
+  &envoy_api_v2_auth_SdsSecretConfig_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit = {
+  &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_submsgs[0],
+  &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_UpstreamTlsContext_submsgs[2] = {
+  &envoy_api_v2_auth_CommonTlsContext_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_UpstreamTlsContext__fields[4] = {
+  {1, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {4, UPB_SIZE(16, 32), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_UpstreamTlsContext_msginit = {
+  &envoy_api_v2_auth_UpstreamTlsContext_submsgs[0],
+  &envoy_api_v2_auth_UpstreamTlsContext__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_DownstreamTlsContext_submsgs[6] = {
+  &envoy_api_v2_auth_CommonTlsContext_msginit,
+  &envoy_api_v2_auth_SdsSecretConfig_msginit,
+  &envoy_api_v2_auth_TlsSessionTicketKeys_msginit,
+  &google_protobuf_BoolValue_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_DownstreamTlsContext__fields[6] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 3, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 3, 11, 1},
+  {4, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 2, 11, 1},
+  {5, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 1, 11, 1},
+  {6, UPB_SIZE(12, 24), 0, 4, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_DownstreamTlsContext_msginit = {
+  &envoy_api_v2_auth_DownstreamTlsContext_submsgs[0],
+  &envoy_api_v2_auth_DownstreamTlsContext__fields[0],
+  UPB_SIZE(24, 48), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_GenericSecret_submsgs[1] = {
+  &envoy_api_v2_core_DataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_GenericSecret__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_GenericSecret_msginit = {
+  &envoy_api_v2_auth_GenericSecret_submsgs[0],
+  &envoy_api_v2_auth_GenericSecret__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_SdsSecretConfig_submsgs[1] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_SdsSecretConfig__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_SdsSecretConfig_msginit = {
+  &envoy_api_v2_auth_SdsSecretConfig_submsgs[0],
+  &envoy_api_v2_auth_SdsSecretConfig__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_auth_Secret_submsgs[4] = {
+  &envoy_api_v2_auth_CertificateValidationContext_msginit,
+  &envoy_api_v2_auth_GenericSecret_msginit,
+  &envoy_api_v2_auth_TlsCertificate_msginit,
+  &envoy_api_v2_auth_TlsSessionTicketKeys_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_auth_Secret__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 2, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 3, 11, 1},
+  {4, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+  {5, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_auth_Secret_msginit = {
+  &envoy_api_v2_auth_Secret_submsgs[0],
+  &envoy_api_v2_auth_Secret__fields[0],
+  UPB_SIZE(16, 32), 5, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h
new file mode 100644
index 0000000..de2b13c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h	
@@ -0,0 +1,929 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/auth/cert.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_
+#define ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_auth_TlsParameters;
+struct envoy_api_v2_auth_PrivateKeyProvider;
+struct envoy_api_v2_auth_TlsCertificate;
+struct envoy_api_v2_auth_TlsSessionTicketKeys;
+struct envoy_api_v2_auth_CertificateValidationContext;
+struct envoy_api_v2_auth_CommonTlsContext;
+struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext;
+struct envoy_api_v2_auth_UpstreamTlsContext;
+struct envoy_api_v2_auth_DownstreamTlsContext;
+struct envoy_api_v2_auth_GenericSecret;
+struct envoy_api_v2_auth_SdsSecretConfig;
+struct envoy_api_v2_auth_Secret;
+typedef struct envoy_api_v2_auth_TlsParameters envoy_api_v2_auth_TlsParameters;
+typedef struct envoy_api_v2_auth_PrivateKeyProvider envoy_api_v2_auth_PrivateKeyProvider;
+typedef struct envoy_api_v2_auth_TlsCertificate envoy_api_v2_auth_TlsCertificate;
+typedef struct envoy_api_v2_auth_TlsSessionTicketKeys envoy_api_v2_auth_TlsSessionTicketKeys;
+typedef struct envoy_api_v2_auth_CertificateValidationContext envoy_api_v2_auth_CertificateValidationContext;
+typedef struct envoy_api_v2_auth_CommonTlsContext envoy_api_v2_auth_CommonTlsContext;
+typedef struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext;
+typedef struct envoy_api_v2_auth_UpstreamTlsContext envoy_api_v2_auth_UpstreamTlsContext;
+typedef struct envoy_api_v2_auth_DownstreamTlsContext envoy_api_v2_auth_DownstreamTlsContext;
+typedef struct envoy_api_v2_auth_GenericSecret envoy_api_v2_auth_GenericSecret;
+typedef struct envoy_api_v2_auth_SdsSecretConfig envoy_api_v2_auth_SdsSecretConfig;
+typedef struct envoy_api_v2_auth_Secret envoy_api_v2_auth_Secret;
+extern const upb_msglayout envoy_api_v2_auth_TlsParameters_msginit;
+extern const upb_msglayout envoy_api_v2_auth_PrivateKeyProvider_msginit;
+extern const upb_msglayout envoy_api_v2_auth_TlsCertificate_msginit;
+extern const upb_msglayout envoy_api_v2_auth_TlsSessionTicketKeys_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CertificateValidationContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CommonTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_UpstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_DownstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_auth_GenericSecret_msginit;
+extern const upb_msglayout envoy_api_v2_auth_SdsSecretConfig_msginit;
+extern const upb_msglayout envoy_api_v2_auth_Secret_msginit;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_DataSource;
+struct envoy_type_matcher_StringMatcher;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_auth_CertificateValidationContext_VERIFY_TRUST_CHAIN = 0,
+  envoy_api_v2_auth_CertificateValidationContext_ACCEPT_UNTRUSTED = 1
+} envoy_api_v2_auth_CertificateValidationContext_TrustChainVerification;
+
+typedef enum {
+  envoy_api_v2_auth_TlsParameters_TLS_AUTO = 0,
+  envoy_api_v2_auth_TlsParameters_TLSv1_0 = 1,
+  envoy_api_v2_auth_TlsParameters_TLSv1_1 = 2,
+  envoy_api_v2_auth_TlsParameters_TLSv1_2 = 3,
+  envoy_api_v2_auth_TlsParameters_TLSv1_3 = 4
+} envoy_api_v2_auth_TlsParameters_TlsProtocol;
+
+
+/* envoy.api.v2.auth.TlsParameters */
+
+UPB_INLINE envoy_api_v2_auth_TlsParameters *envoy_api_v2_auth_TlsParameters_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsParameters *)upb_msg_new(&envoy_api_v2_auth_TlsParameters_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsParameters *envoy_api_v2_auth_TlsParameters_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsParameters *ret = envoy_api_v2_auth_TlsParameters_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsParameters_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsParameters_serialize(const envoy_api_v2_auth_TlsParameters *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsParameters_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_auth_TlsParameters_tls_minimum_protocol_version(const envoy_api_v2_auth_TlsParameters *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t envoy_api_v2_auth_TlsParameters_tls_maximum_protocol_version(const envoy_api_v2_auth_TlsParameters *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_TlsParameters_cipher_suites(const envoy_api_v2_auth_TlsParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(16, 16), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_TlsParameters_ecdh_curves(const envoy_api_v2_auth_TlsParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(20, 24), len); }
+
+UPB_INLINE void envoy_api_v2_auth_TlsParameters_set_tls_minimum_protocol_version(envoy_api_v2_auth_TlsParameters *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsParameters_set_tls_maximum_protocol_version(envoy_api_v2_auth_TlsParameters *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_mutable_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_resize_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(16, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_TlsParameters_add_cipher_suites(envoy_api_v2_auth_TlsParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_mutable_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 24), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_TlsParameters_resize_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 24), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_TlsParameters_add_ecdh_curves(envoy_api_v2_auth_TlsParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 24), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.auth.PrivateKeyProvider */
+
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider *envoy_api_v2_auth_PrivateKeyProvider_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_PrivateKeyProvider *)upb_msg_new(&envoy_api_v2_auth_PrivateKeyProvider_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider *envoy_api_v2_auth_PrivateKeyProvider_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_PrivateKeyProvider *ret = envoy_api_v2_auth_PrivateKeyProvider_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_PrivateKeyProvider_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_PrivateKeyProvider_serialize(const envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_PrivateKeyProvider_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_config = 2,
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_typed_config = 3,
+  envoy_api_v2_auth_PrivateKeyProvider_config_type_NOT_SET = 0
+} envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases envoy_api_v2_auth_PrivateKeyProvider_config_type_case(const envoy_api_v2_auth_PrivateKeyProvider* msg) { return (envoy_api_v2_auth_PrivateKeyProvider_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_auth_PrivateKeyProvider_provider_name(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_auth_PrivateKeyProvider_has_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_auth_PrivateKeyProvider_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_PrivateKeyProvider_has_typed_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_auth_PrivateKeyProvider_typed_config(const envoy_api_v2_auth_PrivateKeyProvider *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_provider_name(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_config(envoy_api_v2_auth_PrivateKeyProvider *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_auth_PrivateKeyProvider_mutable_config(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_auth_PrivateKeyProvider_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_PrivateKeyProvider_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_PrivateKeyProvider_set_typed_config(envoy_api_v2_auth_PrivateKeyProvider *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_auth_PrivateKeyProvider_mutable_typed_config(envoy_api_v2_auth_PrivateKeyProvider *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_auth_PrivateKeyProvider_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_PrivateKeyProvider_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.TlsCertificate */
+
+UPB_INLINE envoy_api_v2_auth_TlsCertificate *envoy_api_v2_auth_TlsCertificate_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsCertificate *)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate *envoy_api_v2_auth_TlsCertificate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsCertificate *ret = envoy_api_v2_auth_TlsCertificate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsCertificate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsCertificate_serialize(const envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsCertificate_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_certificate_chain(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_private_key(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_password(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_ocsp_staple(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* const* envoy_api_v2_auth_TlsCertificate_signed_certificate_timestamp(const envoy_api_v2_auth_TlsCertificate *msg, size_t *len) { return (const struct envoy_api_v2_core_DataSource* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const envoy_api_v2_auth_PrivateKeyProvider* envoy_api_v2_auth_TlsCertificate_private_key_provider(const envoy_api_v2_auth_TlsCertificate *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_PrivateKeyProvider*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_certificate_chain(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_certificate_chain(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_certificate_chain(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_certificate_chain(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_private_key(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_private_key(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_private_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_private_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_password(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_password(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_password(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_password(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_ocsp_staple(envoy_api_v2_auth_TlsCertificate *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_mutable_ocsp_staple(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_TlsCertificate_ocsp_staple(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_ocsp_staple(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsCertificate_mutable_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, size_t *len) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsCertificate_resize_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsCertificate_add_signed_certificate_timestamp(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_TlsCertificate_set_private_key_provider(envoy_api_v2_auth_TlsCertificate *msg, envoy_api_v2_auth_PrivateKeyProvider* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_PrivateKeyProvider*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_PrivateKeyProvider* envoy_api_v2_auth_TlsCertificate_mutable_private_key_provider(envoy_api_v2_auth_TlsCertificate *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_PrivateKeyProvider* sub = (struct envoy_api_v2_auth_PrivateKeyProvider*)envoy_api_v2_auth_TlsCertificate_private_key_provider(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_PrivateKeyProvider*)upb_msg_new(&envoy_api_v2_auth_PrivateKeyProvider_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_TlsCertificate_set_private_key_provider(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.TlsSessionTicketKeys */
+
+UPB_INLINE envoy_api_v2_auth_TlsSessionTicketKeys *envoy_api_v2_auth_TlsSessionTicketKeys_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsSessionTicketKeys *)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_TlsSessionTicketKeys *envoy_api_v2_auth_TlsSessionTicketKeys_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_TlsSessionTicketKeys *ret = envoy_api_v2_auth_TlsSessionTicketKeys_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_TlsSessionTicketKeys_serialize(const envoy_api_v2_auth_TlsSessionTicketKeys *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* const* envoy_api_v2_auth_TlsSessionTicketKeys_keys(const envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t *len) { return (const struct envoy_api_v2_core_DataSource* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsSessionTicketKeys_mutable_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t *len) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource** envoy_api_v2_auth_TlsSessionTicketKeys_resize_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_DataSource**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_TlsSessionTicketKeys_add_keys(envoy_api_v2_auth_TlsSessionTicketKeys *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.auth.CertificateValidationContext */
+
+UPB_INLINE envoy_api_v2_auth_CertificateValidationContext *envoy_api_v2_auth_CertificateValidationContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CertificateValidationContext *)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CertificateValidationContext *envoy_api_v2_auth_CertificateValidationContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CertificateValidationContext *ret = envoy_api_v2_auth_CertificateValidationContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CertificateValidationContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CertificateValidationContext_serialize(const envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CertificateValidationContext_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_trusted_ca(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_certificate_hash(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_certificate_spki(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CertificateValidationContext_verify_subject_alt_name(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_require_ocsp_staple(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_require_signed_certificate_timestamp(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_crl(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_allow_expired_certificate(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* const* envoy_api_v2_auth_CertificateValidationContext_match_subject_alt_names(const envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) { return (const struct envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE int32_t envoy_api_v2_auth_CertificateValidationContext_trust_chain_verification(const envoy_api_v2_auth_CertificateValidationContext *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_trusted_ca(envoy_api_v2_auth_CertificateValidationContext *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_mutable_trusted_ca(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_CertificateValidationContext_trusted_ca(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_trusted_ca(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_certificate_hash(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_certificate_spki(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_mutable_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CertificateValidationContext_resize_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CertificateValidationContext_add_verify_subject_alt_name(envoy_api_v2_auth_CertificateValidationContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_require_ocsp_staple(envoy_api_v2_auth_CertificateValidationContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_mutable_require_ocsp_staple(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_CertificateValidationContext_require_ocsp_staple(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_require_ocsp_staple(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_require_signed_certificate_timestamp(envoy_api_v2_auth_CertificateValidationContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_CertificateValidationContext_mutable_require_signed_certificate_timestamp(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_CertificateValidationContext_require_signed_certificate_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_require_signed_certificate_timestamp(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_crl(envoy_api_v2_auth_CertificateValidationContext *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_CertificateValidationContext_mutable_crl(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_CertificateValidationContext_crl(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CertificateValidationContext_set_crl(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_allow_expired_certificate(envoy_api_v2_auth_CertificateValidationContext *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_auth_CertificateValidationContext_mutable_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, size_t *len) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_auth_CertificateValidationContext_resize_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_auth_CertificateValidationContext_add_match_subject_alt_names(envoy_api_v2_auth_CertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CertificateValidationContext_set_trust_chain_verification(envoy_api_v2_auth_CertificateValidationContext *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.auth.CommonTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext *envoy_api_v2_auth_CommonTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CommonTlsContext *)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext *envoy_api_v2_auth_CommonTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CommonTlsContext *ret = envoy_api_v2_auth_CommonTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CommonTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CommonTlsContext_serialize(const envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CommonTlsContext_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_validation_context = 3,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_validation_context_sds_secret_config = 7,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_combined_validation_context = 8,
+  envoy_api_v2_auth_CommonTlsContext_validation_context_type_NOT_SET = 0
+} envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases envoy_api_v2_auth_CommonTlsContext_validation_context_type_case(const envoy_api_v2_auth_CommonTlsContext* msg) { return (envoy_api_v2_auth_CommonTlsContext_validation_context_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE const envoy_api_v2_auth_TlsParameters* envoy_api_v2_auth_CommonTlsContext_tls_params(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_TlsParameters*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_auth_TlsCertificate* const* envoy_api_v2_auth_CommonTlsContext_tls_certificates(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (const envoy_api_v2_auth_TlsCertificate* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 3); }
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 3, NULL); }
+UPB_INLINE upb_strview const* envoy_api_v2_auth_CommonTlsContext_alpn_protocols(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* const* envoy_api_v2_auth_CommonTlsContext_tls_certificate_sds_secret_configs(const envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) { return (const envoy_api_v2_auth_SdsSecretConfig* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 7); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 7, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_has_combined_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 8); }
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_combined_validation_context(const envoy_api_v2_auth_CommonTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 8, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_tls_params(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_TlsParameters* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_TlsParameters*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsParameters* envoy_api_v2_auth_CommonTlsContext_mutable_tls_params(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsParameters* sub = (struct envoy_api_v2_auth_TlsParameters*)envoy_api_v2_auth_CommonTlsContext_tls_params(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsParameters*)upb_msg_new(&envoy_api_v2_auth_TlsParameters_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_tls_params(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate** envoy_api_v2_auth_CommonTlsContext_mutable_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (envoy_api_v2_auth_TlsCertificate**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE envoy_api_v2_auth_TlsCertificate** envoy_api_v2_auth_CommonTlsContext_resize_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_auth_TlsCertificate**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_CommonTlsContext_add_tls_certificates(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsCertificate* sub = (struct envoy_api_v2_auth_TlsCertificate*)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 3);
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_mutable_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CommonTlsContext_mutable_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_auth_CommonTlsContext_resize_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_auth_CommonTlsContext_add_alpn_protocols(envoy_api_v2_auth_CommonTlsContext *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig** envoy_api_v2_auth_CommonTlsContext_mutable_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, size_t *len) {
+  return (envoy_api_v2_auth_SdsSecretConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig** envoy_api_v2_auth_CommonTlsContext_resize_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_auth_SdsSecretConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_add_tls_certificate_sds_secret_configs(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 7);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_mutable_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_CommonTlsContext_validation_context_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_validation_context_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_set_combined_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 8);
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_mutable_combined_validation_context(envoy_api_v2_auth_CommonTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext* sub = (struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_combined_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_set_combined_validation_context(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.CommonTlsContext.CombinedCertificateValidationContext */
+
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *ret = envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_serialize(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_default_validation_context(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_validation_context_sds_secret_config(const envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_default_validation_context(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_mutable_default_validation_context(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_default_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_default_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_mutable_validation_context_sds_secret_config(envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_validation_context_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_CommonTlsContext_CombinedCertificateValidationContext_set_validation_context_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.UpstreamTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_UpstreamTlsContext *envoy_api_v2_auth_UpstreamTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_UpstreamTlsContext *)upb_msg_new(&envoy_api_v2_auth_UpstreamTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_UpstreamTlsContext *envoy_api_v2_auth_UpstreamTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_UpstreamTlsContext *ret = envoy_api_v2_auth_UpstreamTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_UpstreamTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_UpstreamTlsContext_serialize(const envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_UpstreamTlsContext_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_UpstreamTlsContext_common_tls_context(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_auth_UpstreamTlsContext_sni(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_auth_UpstreamTlsContext_allow_renegotiation(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_auth_UpstreamTlsContext_max_session_keys(const envoy_api_v2_auth_UpstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_common_tls_context(envoy_api_v2_auth_UpstreamTlsContext *msg, envoy_api_v2_auth_CommonTlsContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_UpstreamTlsContext_mutable_common_tls_context(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext* sub = (struct envoy_api_v2_auth_CommonTlsContext*)envoy_api_v2_auth_UpstreamTlsContext_common_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_UpstreamTlsContext_set_common_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_sni(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_allow_renegotiation(envoy_api_v2_auth_UpstreamTlsContext *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_UpstreamTlsContext_set_max_session_keys(envoy_api_v2_auth_UpstreamTlsContext *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_auth_UpstreamTlsContext_mutable_max_session_keys(envoy_api_v2_auth_UpstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_auth_UpstreamTlsContext_max_session_keys(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_UpstreamTlsContext_set_max_session_keys(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.DownstreamTlsContext */
+
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext *envoy_api_v2_auth_DownstreamTlsContext_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_DownstreamTlsContext *)upb_msg_new(&envoy_api_v2_auth_DownstreamTlsContext_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext *envoy_api_v2_auth_DownstreamTlsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_DownstreamTlsContext *ret = envoy_api_v2_auth_DownstreamTlsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_DownstreamTlsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_DownstreamTlsContext_serialize(const envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_DownstreamTlsContext_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_session_ticket_keys = 4,
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_session_ticket_keys_sds_secret_config = 5,
+  envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_NOT_SET = 0
+} envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_case(const envoy_api_v2_auth_DownstreamTlsContext* msg) { return (envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE const envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_DownstreamTlsContext_common_tls_context(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_require_client_certificate(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_require_sni(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_auth_DownstreamTlsContext_has_session_ticket_keys(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_DownstreamTlsContext_has_session_ticket_keys_sds_secret_config(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE const envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_sds_secret_config(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 5, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_auth_DownstreamTlsContext_session_timeout(const envoy_api_v2_auth_DownstreamTlsContext *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_common_tls_context(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_CommonTlsContext* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_auth_CommonTlsContext*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_CommonTlsContext* envoy_api_v2_auth_DownstreamTlsContext_mutable_common_tls_context(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CommonTlsContext* sub = (struct envoy_api_v2_auth_CommonTlsContext*)envoy_api_v2_auth_DownstreamTlsContext_common_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CommonTlsContext*)upb_msg_new(&envoy_api_v2_auth_CommonTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_common_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_require_client_certificate(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_mutable_require_client_certificate(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_DownstreamTlsContext_require_client_certificate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_require_client_certificate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_require_sni(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_auth_DownstreamTlsContext_mutable_require_sni(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_auth_DownstreamTlsContext_require_sni(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_require_sni(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_TlsSessionTicketKeys* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_ticket_keys(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsSessionTicketKeys* sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys_sds_secret_config(envoy_api_v2_auth_DownstreamTlsContext *msg, envoy_api_v2_auth_SdsSecretConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_SdsSecretConfig*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE struct envoy_api_v2_auth_SdsSecretConfig* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_ticket_keys_sds_secret_config(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_SdsSecretConfig* sub = (struct envoy_api_v2_auth_SdsSecretConfig*)envoy_api_v2_auth_DownstreamTlsContext_session_ticket_keys_sds_secret_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_SdsSecretConfig*)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_ticket_keys_sds_secret_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_DownstreamTlsContext_set_session_timeout(envoy_api_v2_auth_DownstreamTlsContext *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_auth_DownstreamTlsContext_mutable_session_timeout(envoy_api_v2_auth_DownstreamTlsContext *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_auth_DownstreamTlsContext_session_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_DownstreamTlsContext_set_session_timeout(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.GenericSecret */
+
+UPB_INLINE envoy_api_v2_auth_GenericSecret *envoy_api_v2_auth_GenericSecret_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_GenericSecret *)upb_msg_new(&envoy_api_v2_auth_GenericSecret_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_GenericSecret *envoy_api_v2_auth_GenericSecret_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_GenericSecret *ret = envoy_api_v2_auth_GenericSecret_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_GenericSecret_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_GenericSecret_serialize(const envoy_api_v2_auth_GenericSecret *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_GenericSecret_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_GenericSecret_secret(const envoy_api_v2_auth_GenericSecret *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_auth_GenericSecret_set_secret(envoy_api_v2_auth_GenericSecret *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_auth_GenericSecret_mutable_secret(envoy_api_v2_auth_GenericSecret *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_auth_GenericSecret_secret(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_GenericSecret_set_secret(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.SdsSecretConfig */
+
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig *envoy_api_v2_auth_SdsSecretConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_SdsSecretConfig *)upb_msg_new(&envoy_api_v2_auth_SdsSecretConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_SdsSecretConfig *envoy_api_v2_auth_SdsSecretConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_SdsSecretConfig *ret = envoy_api_v2_auth_SdsSecretConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_SdsSecretConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_SdsSecretConfig_serialize(const envoy_api_v2_auth_SdsSecretConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_SdsSecretConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_auth_SdsSecretConfig_name(const envoy_api_v2_auth_SdsSecretConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_auth_SdsSecretConfig_sds_config(const envoy_api_v2_auth_SdsSecretConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_auth_SdsSecretConfig_set_name(envoy_api_v2_auth_SdsSecretConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_SdsSecretConfig_set_sds_config(envoy_api_v2_auth_SdsSecretConfig *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_auth_SdsSecretConfig_mutable_sds_config(envoy_api_v2_auth_SdsSecretConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_auth_SdsSecretConfig_sds_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_SdsSecretConfig_set_sds_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.auth.Secret */
+
+UPB_INLINE envoy_api_v2_auth_Secret *envoy_api_v2_auth_Secret_new(upb_arena *arena) {
+  return (envoy_api_v2_auth_Secret *)upb_msg_new(&envoy_api_v2_auth_Secret_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_auth_Secret *envoy_api_v2_auth_Secret_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_auth_Secret *ret = envoy_api_v2_auth_Secret_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_auth_Secret_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_auth_Secret_serialize(const envoy_api_v2_auth_Secret *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_auth_Secret_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_auth_Secret_type_tls_certificate = 2,
+  envoy_api_v2_auth_Secret_type_session_ticket_keys = 3,
+  envoy_api_v2_auth_Secret_type_validation_context = 4,
+  envoy_api_v2_auth_Secret_type_generic_secret = 5,
+  envoy_api_v2_auth_Secret_type_NOT_SET = 0
+} envoy_api_v2_auth_Secret_type_oneofcases;
+UPB_INLINE envoy_api_v2_auth_Secret_type_oneofcases envoy_api_v2_auth_Secret_type_case(const envoy_api_v2_auth_Secret* msg) { return (envoy_api_v2_auth_Secret_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_auth_Secret_name(const envoy_api_v2_auth_Secret *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_tls_certificate(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_Secret_tls_certificate(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsCertificate*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_session_ticket_keys(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_Secret_session_ticket_keys(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_validation_context(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_Secret_validation_context(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_auth_Secret_has_generic_secret(const envoy_api_v2_auth_Secret *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const envoy_api_v2_auth_GenericSecret* envoy_api_v2_auth_Secret_generic_secret(const envoy_api_v2_auth_Secret *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_auth_GenericSecret*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_auth_Secret_set_name(envoy_api_v2_auth_Secret *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_tls_certificate(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_TlsCertificate* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsCertificate*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsCertificate* envoy_api_v2_auth_Secret_mutable_tls_certificate(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsCertificate* sub = (struct envoy_api_v2_auth_TlsCertificate*)envoy_api_v2_auth_Secret_tls_certificate(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsCertificate*)upb_msg_new(&envoy_api_v2_auth_TlsCertificate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_tls_certificate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_session_ticket_keys(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_TlsSessionTicketKeys* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_TlsSessionTicketKeys*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct envoy_api_v2_auth_TlsSessionTicketKeys* envoy_api_v2_auth_Secret_mutable_session_ticket_keys(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_TlsSessionTicketKeys* sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)envoy_api_v2_auth_Secret_session_ticket_keys(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_TlsSessionTicketKeys*)upb_msg_new(&envoy_api_v2_auth_TlsSessionTicketKeys_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_session_ticket_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_validation_context(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_CertificateValidationContext* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_CertificateValidationContext*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct envoy_api_v2_auth_CertificateValidationContext* envoy_api_v2_auth_Secret_mutable_validation_context(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_CertificateValidationContext* sub = (struct envoy_api_v2_auth_CertificateValidationContext*)envoy_api_v2_auth_Secret_validation_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_CertificateValidationContext*)upb_msg_new(&envoy_api_v2_auth_CertificateValidationContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_validation_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_auth_Secret_set_generic_secret(envoy_api_v2_auth_Secret *msg, envoy_api_v2_auth_GenericSecret* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_auth_GenericSecret*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_api_v2_auth_GenericSecret* envoy_api_v2_auth_Secret_mutable_generic_secret(envoy_api_v2_auth_Secret *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_GenericSecret* sub = (struct envoy_api_v2_auth_GenericSecret*)envoy_api_v2_auth_Secret_generic_secret(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_GenericSecret*)upb_msg_new(&envoy_api_v2_auth_GenericSecret_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_auth_Secret_set_generic_secret(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_AUTH_CERT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.c
new file mode 100644
index 0000000..9b7393f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.c	
@@ -0,0 +1,63 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cds.upb.h"
+#else
+  #include  "envoy/api/v2/cds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h"
+#else
+  #include  "envoy/api/v2/cluster.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_CdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h
new file mode 100644
index 0000000..51e566e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CDS_PROTO_UPB_H_
+#define ENVOY_API_V2_CDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h"
+#else
+  #include  "envoy/api/v2/cluster.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_CdsDummy;
+typedef struct envoy_api_v2_CdsDummy envoy_api_v2_CdsDummy;
+extern const upb_msglayout envoy_api_v2_CdsDummy_msginit;
+
+
+/* envoy.api.v2.CdsDummy */
+
+UPB_INLINE envoy_api_v2_CdsDummy *envoy_api_v2_CdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_CdsDummy *)upb_msg_new(&envoy_api_v2_CdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_CdsDummy *envoy_api_v2_CdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_CdsDummy *ret = envoy_api_v2_CdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_CdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_CdsDummy_serialize(const envoy_api_v2_CdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_CdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.c
new file mode 100644
index 0000000..9380e2f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.c	
@@ -0,0 +1,478 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h"
+#else
+  #include  "envoy/api/v2/cluster.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h"
+#else
+  #include  "envoy/api/v2/auth/cert.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/circuit_breaker.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/filter.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/outlier_detection.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h"
+#else
+  #include  "envoy/api/v2/core/health_check.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h"
+#else
+  #include  "envoy/api/v2/core/protocol.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_Cluster_submsgs[34] = {
+  &envoy_api_v2_Cluster_CommonLbConfig_msginit,
+  &envoy_api_v2_Cluster_CustomClusterType_msginit,
+  &envoy_api_v2_Cluster_EdsClusterConfig_msginit,
+  &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit,
+  &envoy_api_v2_Cluster_LbSubsetConfig_msginit,
+  &envoy_api_v2_Cluster_LeastRequestLbConfig_msginit,
+  &envoy_api_v2_Cluster_OriginalDstLbConfig_msginit,
+  &envoy_api_v2_Cluster_RefreshRate_msginit,
+  &envoy_api_v2_Cluster_RingHashLbConfig_msginit,
+  &envoy_api_v2_Cluster_TransportSocketMatch_msginit,
+  &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit,
+  &envoy_api_v2_ClusterLoadAssignment_msginit,
+  &envoy_api_v2_LoadBalancingPolicy_msginit,
+  &envoy_api_v2_UpstreamConnectionOptions_msginit,
+  &envoy_api_v2_auth_UpstreamTlsContext_msginit,
+  &envoy_api_v2_cluster_CircuitBreakers_msginit,
+  &envoy_api_v2_cluster_Filter_msginit,
+  &envoy_api_v2_cluster_OutlierDetection_msginit,
+  &envoy_api_v2_core_Address_msginit,
+  &envoy_api_v2_core_BindConfig_msginit,
+  &envoy_api_v2_core_ConfigSource_msginit,
+  &envoy_api_v2_core_HealthCheck_msginit,
+  &envoy_api_v2_core_Http1ProtocolOptions_msginit,
+  &envoy_api_v2_core_Http2ProtocolOptions_msginit,
+  &envoy_api_v2_core_HttpProtocolOptions_msginit,
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_core_TransportSocket_msginit,
+  &envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster__fields[45] = {
+  {1, UPB_SIZE(32, 32), 0, 0, 9, 1},
+  {2, UPB_SIZE(168, 304), UPB_SIZE(-177, -313), 0, 14, 1},
+  {3, UPB_SIZE(48, 64), 0, 2, 11, 1},
+  {4, UPB_SIZE(52, 72), 0, 28, 11, 1},
+  {5, UPB_SIZE(56, 80), 0, 29, 11, 1},
+  {6, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {7, UPB_SIZE(140, 248), 0, 18, 11, 3},
+  {8, UPB_SIZE(144, 256), 0, 21, 11, 3},
+  {9, UPB_SIZE(60, 88), 0, 29, 11, 1},
+  {10, UPB_SIZE(64, 96), 0, 15, 11, 1},
+  {11, UPB_SIZE(68, 104), 0, 14, 11, 1},
+  {13, UPB_SIZE(72, 112), 0, 22, 11, 1},
+  {14, UPB_SIZE(76, 120), 0, 23, 11, 1},
+  {16, UPB_SIZE(80, 128), 0, 28, 11, 1},
+  {17, UPB_SIZE(8, 8), 0, 0, 14, 1},
+  {18, UPB_SIZE(148, 264), 0, 18, 11, 3},
+  {19, UPB_SIZE(84, 136), 0, 17, 11, 1},
+  {20, UPB_SIZE(88, 144), 0, 28, 11, 1},
+  {21, UPB_SIZE(92, 152), 0, 19, 11, 1},
+  {22, UPB_SIZE(96, 160), 0, 4, 11, 1},
+  {23, UPB_SIZE(180, 320), UPB_SIZE(-185, -329), 8, 11, 1},
+  {24, UPB_SIZE(100, 168), 0, 26, 11, 1},
+  {25, UPB_SIZE(104, 176), 0, 25, 11, 1},
+  {26, UPB_SIZE(16, 16), 0, 0, 14, 1},
+  {27, UPB_SIZE(108, 184), 0, 0, 11, 1},
+  {28, UPB_SIZE(40, 48), 0, 0, 9, 1},
+  {29, UPB_SIZE(112, 192), 0, 24, 11, 1},
+  {30, UPB_SIZE(116, 200), 0, 13, 11, 1},
+  {31, UPB_SIZE(24, 24), 0, 0, 8, 1},
+  {32, UPB_SIZE(25, 25), 0, 0, 8, 1},
+  {33, UPB_SIZE(120, 208), 0, 11, 11, 1},
+  {34, UPB_SIZE(180, 320), UPB_SIZE(-185, -329), 6, 11, 1},
+  {35, UPB_SIZE(152, 272), 0, 3, 11, 3},
+  {36, UPB_SIZE(156, 280), 0, 10, 11, 3},
+  {37, UPB_SIZE(180, 320), UPB_SIZE(-185, -329), 5, 11, 1},
+  {38, UPB_SIZE(168, 304), UPB_SIZE(-177, -313), 1, 11, 1},
+  {39, UPB_SIZE(26, 26), 0, 0, 8, 1},
+  {40, UPB_SIZE(160, 288), 0, 16, 11, 3},
+  {41, UPB_SIZE(124, 216), 0, 12, 11, 1},
+  {42, UPB_SIZE(128, 224), 0, 20, 11, 1},
+  {43, UPB_SIZE(164, 296), 0, 9, 11, 3},
+  {44, UPB_SIZE(132, 232), 0, 7, 11, 1},
+  {45, UPB_SIZE(27, 27), 0, 0, 8, 1},
+  {46, UPB_SIZE(136, 240), 0, 27, 11, 1},
+  {47, UPB_SIZE(28, 28), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_msginit = {
+  &envoy_api_v2_Cluster_submsgs[0],
+  &envoy_api_v2_Cluster__fields[0],
+  UPB_SIZE(192, 336), 45, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_TransportSocketMatch_submsgs[2] = {
+  &envoy_api_v2_core_TransportSocket_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_TransportSocketMatch__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_TransportSocketMatch_msginit = {
+  &envoy_api_v2_Cluster_TransportSocketMatch_submsgs[0],
+  &envoy_api_v2_Cluster_TransportSocketMatch__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_CustomClusterType_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_CustomClusterType__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_CustomClusterType_msginit = {
+  &envoy_api_v2_Cluster_CustomClusterType_submsgs[0],
+  &envoy_api_v2_Cluster_CustomClusterType__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_EdsClusterConfig_submsgs[1] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_EdsClusterConfig__fields[2] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_EdsClusterConfig_msginit = {
+  &envoy_api_v2_Cluster_EdsClusterConfig_submsgs[0],
+  &envoy_api_v2_Cluster_EdsClusterConfig__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_LbSubsetConfig_submsgs[2] = {
+  &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_LbSubsetConfig__fields[7] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(12, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(16, 24), 0, 0, 11, 3},
+  {4, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {5, UPB_SIZE(9, 9), 0, 0, 8, 1},
+  {6, UPB_SIZE(10, 10), 0, 0, 8, 1},
+  {7, UPB_SIZE(11, 11), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_msginit = {
+  &envoy_api_v2_Cluster_LbSubsetConfig_submsgs[0],
+  &envoy_api_v2_Cluster_LbSubsetConfig__fields[0],
+  UPB_SIZE(24, 32), 7, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector__fields[3] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 3},
+  {2, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {3, UPB_SIZE(12, 16), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit = {
+  NULL,
+  &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector__fields[0],
+  UPB_SIZE(16, 24), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_LeastRequestLbConfig_submsgs[1] = {
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_LeastRequestLbConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_LeastRequestLbConfig_msginit = {
+  &envoy_api_v2_Cluster_LeastRequestLbConfig_submsgs[0],
+  &envoy_api_v2_Cluster_LeastRequestLbConfig__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_RingHashLbConfig_submsgs[2] = {
+  &google_protobuf_UInt64Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_RingHashLbConfig__fields[3] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {4, UPB_SIZE(12, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_RingHashLbConfig_msginit = {
+  &envoy_api_v2_Cluster_RingHashLbConfig_submsgs[0],
+  &envoy_api_v2_Cluster_RingHashLbConfig__fields[0],
+  UPB_SIZE(16, 24), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_OriginalDstLbConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_OriginalDstLbConfig_msginit = {
+  NULL,
+  &envoy_api_v2_Cluster_OriginalDstLbConfig__fields[0],
+  UPB_SIZE(1, 1), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_CommonLbConfig_submsgs[4] = {
+  &envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit,
+  &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit,
+  &envoy_type_Percent_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_CommonLbConfig__fields[6] = {
+  {1, UPB_SIZE(4, 8), 0, 2, 11, 1},
+  {2, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 1, 11, 1},
+  {3, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 0, 11, 1},
+  {4, UPB_SIZE(8, 16), 0, 3, 11, 1},
+  {5, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {6, UPB_SIZE(1, 1), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_msginit = {
+  &envoy_api_v2_Cluster_CommonLbConfig_submsgs[0],
+  &envoy_api_v2_Cluster_CommonLbConfig__fields[0],
+  UPB_SIZE(20, 40), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_submsgs[2] = {
+  &envoy_type_Percent_msginit,
+  &google_protobuf_UInt64Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig__fields[3] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {2, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit = {
+  &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_submsgs[0],
+  &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_RefreshRate_submsgs[2] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_RefreshRate__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_RefreshRate_msginit = {
+  &envoy_api_v2_Cluster_RefreshRate_submsgs[0],
+  &envoy_api_v2_Cluster_RefreshRate__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_submsgs[1] = {
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit = {
+  &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_submsgs[0],
+  &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit = {
+  &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_submsgs[0],
+  &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_LoadBalancingPolicy_submsgs[1] = {
+  &envoy_api_v2_LoadBalancingPolicy_Policy_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_LoadBalancingPolicy__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_LoadBalancingPolicy_msginit = {
+  &envoy_api_v2_LoadBalancingPolicy_submsgs[0],
+  &envoy_api_v2_LoadBalancingPolicy__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_LoadBalancingPolicy_Policy_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_LoadBalancingPolicy_Policy__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_LoadBalancingPolicy_Policy_msginit = {
+  &envoy_api_v2_LoadBalancingPolicy_Policy_submsgs[0],
+  &envoy_api_v2_LoadBalancingPolicy_Policy__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_UpstreamBindConfig_submsgs[1] = {
+  &envoy_api_v2_core_Address_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_UpstreamBindConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_UpstreamBindConfig_msginit = {
+  &envoy_api_v2_UpstreamBindConfig_submsgs[0],
+  &envoy_api_v2_UpstreamBindConfig__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_UpstreamConnectionOptions_submsgs[1] = {
+  &envoy_api_v2_core_TcpKeepalive_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_UpstreamConnectionOptions__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_UpstreamConnectionOptions_msginit = {
+  &envoy_api_v2_UpstreamConnectionOptions_submsgs[0],
+  &envoy_api_v2_UpstreamConnectionOptions__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h
new file mode 100644
index 0000000..81ba550
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster.upb.h	
@@ -0,0 +1,1435 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_Cluster;
+struct envoy_api_v2_Cluster_TransportSocketMatch;
+struct envoy_api_v2_Cluster_CustomClusterType;
+struct envoy_api_v2_Cluster_EdsClusterConfig;
+struct envoy_api_v2_Cluster_LbSubsetConfig;
+struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector;
+struct envoy_api_v2_Cluster_LeastRequestLbConfig;
+struct envoy_api_v2_Cluster_RingHashLbConfig;
+struct envoy_api_v2_Cluster_OriginalDstLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig;
+struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig;
+struct envoy_api_v2_Cluster_RefreshRate;
+struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry;
+struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry;
+struct envoy_api_v2_LoadBalancingPolicy;
+struct envoy_api_v2_LoadBalancingPolicy_Policy;
+struct envoy_api_v2_UpstreamBindConfig;
+struct envoy_api_v2_UpstreamConnectionOptions;
+typedef struct envoy_api_v2_Cluster envoy_api_v2_Cluster;
+typedef struct envoy_api_v2_Cluster_TransportSocketMatch envoy_api_v2_Cluster_TransportSocketMatch;
+typedef struct envoy_api_v2_Cluster_CustomClusterType envoy_api_v2_Cluster_CustomClusterType;
+typedef struct envoy_api_v2_Cluster_EdsClusterConfig envoy_api_v2_Cluster_EdsClusterConfig;
+typedef struct envoy_api_v2_Cluster_LbSubsetConfig envoy_api_v2_Cluster_LbSubsetConfig;
+typedef struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector;
+typedef struct envoy_api_v2_Cluster_LeastRequestLbConfig envoy_api_v2_Cluster_LeastRequestLbConfig;
+typedef struct envoy_api_v2_Cluster_RingHashLbConfig envoy_api_v2_Cluster_RingHashLbConfig;
+typedef struct envoy_api_v2_Cluster_OriginalDstLbConfig envoy_api_v2_Cluster_OriginalDstLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig envoy_api_v2_Cluster_CommonLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig;
+typedef struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig;
+typedef struct envoy_api_v2_Cluster_RefreshRate envoy_api_v2_Cluster_RefreshRate;
+typedef struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry;
+typedef struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry;
+typedef struct envoy_api_v2_LoadBalancingPolicy envoy_api_v2_LoadBalancingPolicy;
+typedef struct envoy_api_v2_LoadBalancingPolicy_Policy envoy_api_v2_LoadBalancingPolicy_Policy;
+typedef struct envoy_api_v2_UpstreamBindConfig envoy_api_v2_UpstreamBindConfig;
+typedef struct envoy_api_v2_UpstreamConnectionOptions envoy_api_v2_UpstreamConnectionOptions;
+extern const upb_msglayout envoy_api_v2_Cluster_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_TransportSocketMatch_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CustomClusterType_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_EdsClusterConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_LeastRequestLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_RingHashLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_OriginalDstLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_RefreshRate_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_LoadBalancingPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_LoadBalancingPolicy_Policy_msginit;
+extern const upb_msglayout envoy_api_v2_UpstreamBindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_UpstreamConnectionOptions_msginit;
+struct envoy_api_v2_ClusterLoadAssignment;
+struct envoy_api_v2_auth_UpstreamTlsContext;
+struct envoy_api_v2_cluster_CircuitBreakers;
+struct envoy_api_v2_cluster_Filter;
+struct envoy_api_v2_cluster_OutlierDetection;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_BindConfig;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_HealthCheck;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_TcpKeepalive;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_api_v2_core_UpstreamHttpProtocolOptions;
+struct envoy_type_Percent;
+struct google_protobuf_Any;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+struct google_protobuf_UInt64Value;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_msginit;
+extern const upb_msglayout envoy_api_v2_auth_UpstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_Filter_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_OutlierDetection_msginit;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_BindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_TcpKeepalive_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+extern const upb_msglayout google_protobuf_UInt64Value_msginit;
+
+typedef enum {
+  envoy_api_v2_Cluster_USE_CONFIGURED_PROTOCOL = 0,
+  envoy_api_v2_Cluster_USE_DOWNSTREAM_PROTOCOL = 1
+} envoy_api_v2_Cluster_ClusterProtocolSelection;
+
+typedef enum {
+  envoy_api_v2_Cluster_STATIC = 0,
+  envoy_api_v2_Cluster_STRICT_DNS = 1,
+  envoy_api_v2_Cluster_LOGICAL_DNS = 2,
+  envoy_api_v2_Cluster_EDS = 3,
+  envoy_api_v2_Cluster_ORIGINAL_DST = 4
+} envoy_api_v2_Cluster_DiscoveryType;
+
+typedef enum {
+  envoy_api_v2_Cluster_AUTO = 0,
+  envoy_api_v2_Cluster_V4_ONLY = 1,
+  envoy_api_v2_Cluster_V6_ONLY = 2
+} envoy_api_v2_Cluster_DnsLookupFamily;
+
+typedef enum {
+  envoy_api_v2_Cluster_ROUND_ROBIN = 0,
+  envoy_api_v2_Cluster_LEAST_REQUEST = 1,
+  envoy_api_v2_Cluster_RING_HASH = 2,
+  envoy_api_v2_Cluster_RANDOM = 3,
+  envoy_api_v2_Cluster_ORIGINAL_DST_LB = 4,
+  envoy_api_v2_Cluster_MAGLEV = 5,
+  envoy_api_v2_Cluster_CLUSTER_PROVIDED = 6,
+  envoy_api_v2_Cluster_LOAD_BALANCING_POLICY_CONFIG = 7
+} envoy_api_v2_Cluster_LbPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_LbSubsetConfig_NO_FALLBACK = 0,
+  envoy_api_v2_Cluster_LbSubsetConfig_ANY_ENDPOINT = 1,
+  envoy_api_v2_Cluster_LbSubsetConfig_DEFAULT_SUBSET = 2
+} envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetFallbackPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_NOT_DEFINED = 0,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_NO_FALLBACK = 1,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_ANY_ENDPOINT = 2,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_DEFAULT_SUBSET = 3,
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_KEYS_SUBSET = 4
+} envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_LbSubsetSelectorFallbackPolicy;
+
+typedef enum {
+  envoy_api_v2_Cluster_RingHashLbConfig_XX_HASH = 0,
+  envoy_api_v2_Cluster_RingHashLbConfig_MURMUR_HASH_2 = 1
+} envoy_api_v2_Cluster_RingHashLbConfig_HashFunction;
+
+
+/* envoy.api.v2.Cluster */
+
+UPB_INLINE envoy_api_v2_Cluster *envoy_api_v2_Cluster_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster *)upb_msg_new(&envoy_api_v2_Cluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster *envoy_api_v2_Cluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster *ret = envoy_api_v2_Cluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_serialize(const envoy_api_v2_Cluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Cluster_cluster_discovery_type_type = 2,
+  envoy_api_v2_Cluster_cluster_discovery_type_cluster_type = 38,
+  envoy_api_v2_Cluster_cluster_discovery_type_NOT_SET = 0
+} envoy_api_v2_Cluster_cluster_discovery_type_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_cluster_discovery_type_oneofcases envoy_api_v2_Cluster_cluster_discovery_type_case(const envoy_api_v2_Cluster* msg) { return (envoy_api_v2_Cluster_cluster_discovery_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(176, 312)); }
+
+typedef enum {
+  envoy_api_v2_Cluster_lb_config_ring_hash_lb_config = 23,
+  envoy_api_v2_Cluster_lb_config_original_dst_lb_config = 34,
+  envoy_api_v2_Cluster_lb_config_least_request_lb_config = 37,
+  envoy_api_v2_Cluster_lb_config_NOT_SET = 0
+} envoy_api_v2_Cluster_lb_config_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_lb_config_oneofcases envoy_api_v2_Cluster_lb_config_case(const envoy_api_v2_Cluster* msg) { return (envoy_api_v2_Cluster_lb_config_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(184, 328)); }
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_name(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_type(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(176, 312), 2); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_type(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(168, 304), UPB_SIZE(176, 312), 2, envoy_api_v2_Cluster_STATIC); }
+UPB_INLINE const envoy_api_v2_Cluster_EdsClusterConfig* envoy_api_v2_Cluster_eds_cluster_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_EdsClusterConfig*, UPB_SIZE(48, 64)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_connect_timeout(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(52, 72)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_per_connection_buffer_limit_bytes(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 80)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_lb_policy(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* const* envoy_api_v2_Cluster_hosts(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_Address* const*)_upb_array_accessor(msg, UPB_SIZE(140, 248), len); }
+UPB_INLINE const struct envoy_api_v2_core_HealthCheck* const* envoy_api_v2_Cluster_health_checks(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_HealthCheck* const*)_upb_array_accessor(msg, UPB_SIZE(144, 256), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_max_requests_per_connection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(60, 88)); }
+UPB_INLINE const struct envoy_api_v2_cluster_CircuitBreakers* envoy_api_v2_Cluster_circuit_breakers(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_cluster_CircuitBreakers*, UPB_SIZE(64, 96)); }
+UPB_INLINE const struct envoy_api_v2_auth_UpstreamTlsContext* envoy_api_v2_Cluster_tls_context(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_auth_UpstreamTlsContext*, UPB_SIZE(68, 104)); }
+UPB_INLINE const struct envoy_api_v2_core_Http1ProtocolOptions* envoy_api_v2_Cluster_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE const struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_Cluster_http2_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(76, 120)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_dns_refresh_rate(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(80, 128)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_dns_lookup_family(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* const* envoy_api_v2_Cluster_dns_resolvers(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_core_Address* const*)_upb_array_accessor(msg, UPB_SIZE(148, 264), len); }
+UPB_INLINE const struct envoy_api_v2_cluster_OutlierDetection* envoy_api_v2_Cluster_outlier_detection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_cluster_OutlierDetection*, UPB_SIZE(84, 136)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_cleanup_interval(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(88, 144)); }
+UPB_INLINE const struct envoy_api_v2_core_BindConfig* envoy_api_v2_Cluster_upstream_bind_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_BindConfig*, UPB_SIZE(92, 152)); }
+UPB_INLINE const envoy_api_v2_Cluster_LbSubsetConfig* envoy_api_v2_Cluster_lb_subset_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_LbSubsetConfig*, UPB_SIZE(96, 160)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_ring_hash_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 23); }
+UPB_INLINE const envoy_api_v2_Cluster_RingHashLbConfig* envoy_api_v2_Cluster_ring_hash_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_RingHashLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 23, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_transport_socket(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(100, 168)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_Cluster_metadata(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(104, 176)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_protocol_selection(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig* envoy_api_v2_Cluster_common_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_CommonLbConfig*, UPB_SIZE(108, 184)); }
+UPB_INLINE upb_strview envoy_api_v2_Cluster_alt_stat_name(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE const struct envoy_api_v2_core_HttpProtocolOptions* envoy_api_v2_Cluster_common_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(112, 192)); }
+UPB_INLINE const envoy_api_v2_UpstreamConnectionOptions* envoy_api_v2_Cluster_upstream_connection_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_UpstreamConnectionOptions*, UPB_SIZE(116, 200)); }
+UPB_INLINE bool envoy_api_v2_Cluster_close_connections_on_host_health_failure(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_api_v2_Cluster_drain_connections_on_host_removal(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)); }
+UPB_INLINE const struct envoy_api_v2_ClusterLoadAssignment* envoy_api_v2_Cluster_load_assignment(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_ClusterLoadAssignment*, UPB_SIZE(120, 208)); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_original_dst_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 34); }
+UPB_INLINE const envoy_api_v2_Cluster_OriginalDstLbConfig* envoy_api_v2_Cluster_original_dst_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_OriginalDstLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 34, NULL); }
+UPB_INLINE const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* const* envoy_api_v2_Cluster_extension_protocol_options(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(152, 272), len); }
+UPB_INLINE const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* const* envoy_api_v2_Cluster_typed_extension_protocol_options(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(156, 280), len); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_least_request_lb_config(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(184, 328), 37); }
+UPB_INLINE const envoy_api_v2_Cluster_LeastRequestLbConfig* envoy_api_v2_Cluster_least_request_lb_config(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_LeastRequestLbConfig*, UPB_SIZE(180, 320), UPB_SIZE(184, 328), 37, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_has_cluster_type(const envoy_api_v2_Cluster *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(176, 312), 38); }
+UPB_INLINE const envoy_api_v2_Cluster_CustomClusterType* envoy_api_v2_Cluster_cluster_type(const envoy_api_v2_Cluster *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CustomClusterType*, UPB_SIZE(168, 304), UPB_SIZE(176, 312), 38, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_respect_dns_ttl(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)); }
+UPB_INLINE const struct envoy_api_v2_cluster_Filter* const* envoy_api_v2_Cluster_filters(const envoy_api_v2_Cluster *msg, size_t *len) { return (const struct envoy_api_v2_cluster_Filter* const*)_upb_array_accessor(msg, UPB_SIZE(160, 288), len); }
+UPB_INLINE const envoy_api_v2_LoadBalancingPolicy* envoy_api_v2_Cluster_load_balancing_policy(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_LoadBalancingPolicy*, UPB_SIZE(124, 216)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_lrs_server(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(128, 224)); }
+UPB_INLINE const envoy_api_v2_Cluster_TransportSocketMatch* const* envoy_api_v2_Cluster_transport_socket_matches(const envoy_api_v2_Cluster *msg, size_t *len) { return (const envoy_api_v2_Cluster_TransportSocketMatch* const*)_upb_array_accessor(msg, UPB_SIZE(164, 296), len); }
+UPB_INLINE const envoy_api_v2_Cluster_RefreshRate* envoy_api_v2_Cluster_dns_failure_refresh_rate(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Cluster_RefreshRate*, UPB_SIZE(132, 232)); }
+UPB_INLINE bool envoy_api_v2_Cluster_use_tcp_for_dns_lookups(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)); }
+UPB_INLINE const struct envoy_api_v2_core_UpstreamHttpProtocolOptions* envoy_api_v2_Cluster_upstream_http_protocol_options(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_UpstreamHttpProtocolOptions*, UPB_SIZE(136, 240)); }
+UPB_INLINE bool envoy_api_v2_Cluster_track_timeout_budgets(const envoy_api_v2_Cluster *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_set_name(envoy_api_v2_Cluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_type(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(168, 304), value, UPB_SIZE(176, 312), 2);
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_eds_cluster_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_EdsClusterConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_EdsClusterConfig*, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_EdsClusterConfig* envoy_api_v2_Cluster_mutable_eds_cluster_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_EdsClusterConfig* sub = (struct envoy_api_v2_Cluster_EdsClusterConfig*)envoy_api_v2_Cluster_eds_cluster_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_EdsClusterConfig*)upb_msg_new(&envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_eds_cluster_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_connect_timeout(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(52, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_connect_timeout(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_connect_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_connect_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_per_connection_buffer_limit_bytes(envoy_api_v2_Cluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_mutable_per_connection_buffer_limit_bytes(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_per_connection_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_per_connection_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lb_policy(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_mutable_hosts(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_mutable_accessor(msg, UPB_SIZE(140, 248), len);
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_resize_hosts(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_resize_accessor(msg, UPB_SIZE(140, 248), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Cluster_add_hosts(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(140, 248), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck** envoy_api_v2_Cluster_mutable_health_checks(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HealthCheck**)_upb_array_mutable_accessor(msg, UPB_SIZE(144, 256), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck** envoy_api_v2_Cluster_resize_health_checks(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HealthCheck**)_upb_array_resize_accessor(msg, UPB_SIZE(144, 256), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck* envoy_api_v2_Cluster_add_health_checks(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck* sub = (struct envoy_api_v2_core_HealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(144, 256), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_max_requests_per_connection(envoy_api_v2_Cluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(60, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_mutable_max_requests_per_connection(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_max_requests_per_connection(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_max_requests_per_connection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_circuit_breakers(envoy_api_v2_Cluster *msg, struct envoy_api_v2_cluster_CircuitBreakers* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_cluster_CircuitBreakers*, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers* envoy_api_v2_Cluster_mutable_circuit_breakers(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers* sub = (struct envoy_api_v2_cluster_CircuitBreakers*)envoy_api_v2_Cluster_circuit_breakers(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_CircuitBreakers*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_circuit_breakers(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_tls_context(envoy_api_v2_Cluster *msg, struct envoy_api_v2_auth_UpstreamTlsContext* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_auth_UpstreamTlsContext*, UPB_SIZE(68, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_UpstreamTlsContext* envoy_api_v2_Cluster_mutable_tls_context(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_UpstreamTlsContext* sub = (struct envoy_api_v2_auth_UpstreamTlsContext*)envoy_api_v2_Cluster_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_UpstreamTlsContext*)upb_msg_new(&envoy_api_v2_auth_UpstreamTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Http1ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions* envoy_api_v2_Cluster_mutable_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions* sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)envoy_api_v2_Cluster_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_http2_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(76, 120)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_Cluster_mutable_http2_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_api_v2_Cluster_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_refresh_rate(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(80, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_dns_refresh_rate(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_dns_refresh_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_dns_refresh_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_lookup_family(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_mutable_dns_resolvers(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_mutable_accessor(msg, UPB_SIZE(148, 264), len);
+}
+UPB_INLINE struct envoy_api_v2_core_Address** envoy_api_v2_Cluster_resize_dns_resolvers(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_Address**)_upb_array_resize_accessor(msg, UPB_SIZE(148, 264), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Cluster_add_dns_resolvers(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(148, 264), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_outlier_detection(envoy_api_v2_Cluster *msg, struct envoy_api_v2_cluster_OutlierDetection* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_cluster_OutlierDetection*, UPB_SIZE(84, 136)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_OutlierDetection* envoy_api_v2_Cluster_mutable_outlier_detection(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_OutlierDetection* sub = (struct envoy_api_v2_cluster_OutlierDetection*)envoy_api_v2_Cluster_outlier_detection(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_OutlierDetection*)upb_msg_new(&envoy_api_v2_cluster_OutlierDetection_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_outlier_detection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_cleanup_interval(envoy_api_v2_Cluster *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(88, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_mutable_cleanup_interval(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_cleanup_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_cleanup_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_bind_config(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_BindConfig* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_BindConfig*, UPB_SIZE(92, 152)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_BindConfig* envoy_api_v2_Cluster_mutable_upstream_bind_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BindConfig* sub = (struct envoy_api_v2_core_BindConfig*)envoy_api_v2_Cluster_upstream_bind_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BindConfig*)upb_msg_new(&envoy_api_v2_core_BindConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_bind_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lb_subset_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_LbSubsetConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_LbSubsetConfig*, UPB_SIZE(96, 160)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LbSubsetConfig* envoy_api_v2_Cluster_mutable_lb_subset_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LbSubsetConfig* sub = (struct envoy_api_v2_Cluster_LbSubsetConfig*)envoy_api_v2_Cluster_lb_subset_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_LbSubsetConfig*)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_lb_subset_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_ring_hash_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_RingHashLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_RingHashLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 23);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_RingHashLbConfig* envoy_api_v2_Cluster_mutable_ring_hash_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_RingHashLbConfig* sub = (struct envoy_api_v2_Cluster_RingHashLbConfig*)envoy_api_v2_Cluster_ring_hash_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_RingHashLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_ring_hash_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_transport_socket(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(100, 168)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_mutable_transport_socket(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_Cluster_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_metadata(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(104, 176)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_Cluster_mutable_metadata(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_Cluster_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_protocol_selection(envoy_api_v2_Cluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_common_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_CommonLbConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_CommonLbConfig*, UPB_SIZE(108, 184)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig* envoy_api_v2_Cluster_mutable_common_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig*)envoy_api_v2_Cluster_common_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_common_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_alt_stat_name(envoy_api_v2_Cluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_common_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_HttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(112, 192)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpProtocolOptions* envoy_api_v2_Cluster_mutable_common_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpProtocolOptions* sub = (struct envoy_api_v2_core_HttpProtocolOptions*)envoy_api_v2_Cluster_common_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_common_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_connection_options(envoy_api_v2_Cluster *msg, envoy_api_v2_UpstreamConnectionOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_UpstreamConnectionOptions*, UPB_SIZE(116, 200)) = value;
+}
+UPB_INLINE struct envoy_api_v2_UpstreamConnectionOptions* envoy_api_v2_Cluster_mutable_upstream_connection_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_UpstreamConnectionOptions* sub = (struct envoy_api_v2_UpstreamConnectionOptions*)envoy_api_v2_Cluster_upstream_connection_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_UpstreamConnectionOptions*)upb_msg_new(&envoy_api_v2_UpstreamConnectionOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_connection_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_close_connections_on_host_health_failure(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_drain_connections_on_host_removal(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_load_assignment(envoy_api_v2_Cluster *msg, struct envoy_api_v2_ClusterLoadAssignment* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_ClusterLoadAssignment*, UPB_SIZE(120, 208)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment* envoy_api_v2_Cluster_mutable_load_assignment(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment* sub = (struct envoy_api_v2_ClusterLoadAssignment*)envoy_api_v2_Cluster_load_assignment(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ClusterLoadAssignment*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_load_assignment(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_original_dst_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_OriginalDstLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_OriginalDstLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 34);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_OriginalDstLbConfig* envoy_api_v2_Cluster_mutable_original_dst_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_OriginalDstLbConfig* sub = (struct envoy_api_v2_Cluster_OriginalDstLbConfig*)envoy_api_v2_Cluster_original_dst_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_OriginalDstLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_original_dst_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_mutable_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(152, 272), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_resize_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(152, 272), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* envoy_api_v2_Cluster_add_extension_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry* sub = (struct envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry*)upb_msg_new(&envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(152, 272), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_mutable_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(156, 280), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry** envoy_api_v2_Cluster_resize_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(156, 280), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* envoy_api_v2_Cluster_add_typed_extension_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry* sub = (struct envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry*)upb_msg_new(&envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(156, 280), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_least_request_lb_config(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_LeastRequestLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_LeastRequestLbConfig*, UPB_SIZE(180, 320), value, UPB_SIZE(184, 328), 37);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LeastRequestLbConfig* envoy_api_v2_Cluster_mutable_least_request_lb_config(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LeastRequestLbConfig* sub = (struct envoy_api_v2_Cluster_LeastRequestLbConfig*)envoy_api_v2_Cluster_least_request_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_LeastRequestLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_least_request_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_cluster_type(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_CustomClusterType* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CustomClusterType*, UPB_SIZE(168, 304), value, UPB_SIZE(176, 312), 38);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CustomClusterType* envoy_api_v2_Cluster_mutable_cluster_type(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CustomClusterType* sub = (struct envoy_api_v2_Cluster_CustomClusterType*)envoy_api_v2_Cluster_cluster_type(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CustomClusterType*)upb_msg_new(&envoy_api_v2_Cluster_CustomClusterType_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_cluster_type(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_respect_dns_ttl(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter** envoy_api_v2_Cluster_mutable_filters(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (struct envoy_api_v2_cluster_Filter**)_upb_array_mutable_accessor(msg, UPB_SIZE(160, 288), len);
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter** envoy_api_v2_Cluster_resize_filters(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_cluster_Filter**)_upb_array_resize_accessor(msg, UPB_SIZE(160, 288), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_cluster_Filter* envoy_api_v2_Cluster_add_filters(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_Filter* sub = (struct envoy_api_v2_cluster_Filter*)upb_msg_new(&envoy_api_v2_cluster_Filter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(160, 288), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_load_balancing_policy(envoy_api_v2_Cluster *msg, envoy_api_v2_LoadBalancingPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_LoadBalancingPolicy*, UPB_SIZE(124, 216)) = value;
+}
+UPB_INLINE struct envoy_api_v2_LoadBalancingPolicy* envoy_api_v2_Cluster_mutable_load_balancing_policy(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_LoadBalancingPolicy* sub = (struct envoy_api_v2_LoadBalancingPolicy*)envoy_api_v2_Cluster_load_balancing_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_LoadBalancingPolicy*)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_load_balancing_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_lrs_server(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(128, 224)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_mutable_lrs_server(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Cluster_lrs_server(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_lrs_server(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch** envoy_api_v2_Cluster_mutable_transport_socket_matches(envoy_api_v2_Cluster *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch**)_upb_array_mutable_accessor(msg, UPB_SIZE(164, 296), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch** envoy_api_v2_Cluster_resize_transport_socket_matches(envoy_api_v2_Cluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch**)_upb_array_resize_accessor(msg, UPB_SIZE(164, 296), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_TransportSocketMatch* envoy_api_v2_Cluster_add_transport_socket_matches(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_TransportSocketMatch* sub = (struct envoy_api_v2_Cluster_TransportSocketMatch*)upb_msg_new(&envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(164, 296), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_dns_failure_refresh_rate(envoy_api_v2_Cluster *msg, envoy_api_v2_Cluster_RefreshRate* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Cluster_RefreshRate*, UPB_SIZE(132, 232)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Cluster_RefreshRate* envoy_api_v2_Cluster_mutable_dns_failure_refresh_rate(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_RefreshRate* sub = (struct envoy_api_v2_Cluster_RefreshRate*)envoy_api_v2_Cluster_dns_failure_refresh_rate(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_RefreshRate*)upb_msg_new(&envoy_api_v2_Cluster_RefreshRate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_dns_failure_refresh_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_use_tcp_for_dns_lookups(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_upstream_http_protocol_options(envoy_api_v2_Cluster *msg, struct envoy_api_v2_core_UpstreamHttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_UpstreamHttpProtocolOptions*, UPB_SIZE(136, 240)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_UpstreamHttpProtocolOptions* envoy_api_v2_Cluster_mutable_upstream_http_protocol_options(envoy_api_v2_Cluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_UpstreamHttpProtocolOptions* sub = (struct envoy_api_v2_core_UpstreamHttpProtocolOptions*)envoy_api_v2_Cluster_upstream_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_UpstreamHttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_set_upstream_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_set_track_timeout_budgets(envoy_api_v2_Cluster *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)) = value;
+}
+
+/* envoy.api.v2.Cluster.TransportSocketMatch */
+
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch *envoy_api_v2_Cluster_TransportSocketMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TransportSocketMatch *)upb_msg_new(&envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_TransportSocketMatch *envoy_api_v2_Cluster_TransportSocketMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_TransportSocketMatch *ret = envoy_api_v2_Cluster_TransportSocketMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_TransportSocketMatch_serialize(const envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_TransportSocketMatch_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_TransportSocketMatch_name(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_TransportSocketMatch_match(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_TransportSocketMatch_transport_socket(const envoy_api_v2_Cluster_TransportSocketMatch *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_name(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_match(envoy_api_v2_Cluster_TransportSocketMatch *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_TransportSocketMatch_mutable_match(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_TransportSocketMatch_match(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TransportSocketMatch_set_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TransportSocketMatch_set_transport_socket(envoy_api_v2_Cluster_TransportSocketMatch *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_Cluster_TransportSocketMatch_mutable_transport_socket(envoy_api_v2_Cluster_TransportSocketMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_Cluster_TransportSocketMatch_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TransportSocketMatch_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.CustomClusterType */
+
+UPB_INLINE envoy_api_v2_Cluster_CustomClusterType *envoy_api_v2_Cluster_CustomClusterType_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CustomClusterType *)upb_msg_new(&envoy_api_v2_Cluster_CustomClusterType_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CustomClusterType *envoy_api_v2_Cluster_CustomClusterType_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CustomClusterType *ret = envoy_api_v2_Cluster_CustomClusterType_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CustomClusterType_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CustomClusterType_serialize(const envoy_api_v2_Cluster_CustomClusterType *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CustomClusterType_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_CustomClusterType_name(const envoy_api_v2_Cluster_CustomClusterType *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Cluster_CustomClusterType_typed_config(const envoy_api_v2_Cluster_CustomClusterType *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CustomClusterType_set_name(envoy_api_v2_Cluster_CustomClusterType *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CustomClusterType_set_typed_config(envoy_api_v2_Cluster_CustomClusterType *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Cluster_CustomClusterType_mutable_typed_config(envoy_api_v2_Cluster_CustomClusterType *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Cluster_CustomClusterType_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CustomClusterType_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.EdsClusterConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_EdsClusterConfig *envoy_api_v2_Cluster_EdsClusterConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_EdsClusterConfig *)upb_msg_new(&envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_EdsClusterConfig *envoy_api_v2_Cluster_EdsClusterConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_EdsClusterConfig *ret = envoy_api_v2_Cluster_EdsClusterConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_EdsClusterConfig_serialize(const envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_EdsClusterConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_EdsClusterConfig_eds_config(const envoy_api_v2_Cluster_EdsClusterConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_Cluster_EdsClusterConfig_service_name(const envoy_api_v2_Cluster_EdsClusterConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_EdsClusterConfig_set_eds_config(envoy_api_v2_Cluster_EdsClusterConfig *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Cluster_EdsClusterConfig_mutable_eds_config(envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Cluster_EdsClusterConfig_eds_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_EdsClusterConfig_set_eds_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_EdsClusterConfig_set_service_name(envoy_api_v2_Cluster_EdsClusterConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.LbSubsetConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig *envoy_api_v2_Cluster_LbSubsetConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig *)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig *envoy_api_v2_Cluster_LbSubsetConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LbSubsetConfig *ret = envoy_api_v2_Cluster_LbSubsetConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LbSubsetConfig_serialize(const envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LbSubsetConfig_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_Cluster_LbSubsetConfig_fallback_policy(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_LbSubsetConfig_default_subset(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 16)); }
+UPB_INLINE const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* const* envoy_api_v2_Cluster_LbSubsetConfig_subset_selectors(const envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t *len) { return (const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* const*)_upb_array_accessor(msg, UPB_SIZE(16, 24), len); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_locality_weight_aware(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_scale_locality_weight(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(9, 9)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_panic_mode_any(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(10, 10)); }
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_list_as_any(const envoy_api_v2_Cluster_LbSubsetConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(11, 11)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_fallback_policy(envoy_api_v2_Cluster_LbSubsetConfig *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_default_subset(envoy_api_v2_Cluster_LbSubsetConfig *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_LbSubsetConfig_mutable_default_subset(envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_LbSubsetConfig_default_subset(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_LbSubsetConfig_set_default_subset(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector** envoy_api_v2_Cluster_LbSubsetConfig_mutable_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t *len) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 24), len);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector** envoy_api_v2_Cluster_LbSubsetConfig_resize_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* envoy_api_v2_Cluster_LbSubsetConfig_add_subset_selectors(envoy_api_v2_Cluster_LbSubsetConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector* sub = (struct envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector*)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_locality_weight_aware(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_scale_locality_weight(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(9, 9)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_panic_mode_any(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(10, 10)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_set_list_as_any(envoy_api_v2_Cluster_LbSubsetConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(11, 11)) = value;
+}
+
+/* envoy.api.v2.Cluster.LbSubsetConfig.LbSubsetSelector */
+
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *)upb_msg_new(&envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *ret = envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_serialize(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_keys(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 8), len); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_fallback_policy(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_fallback_keys_subset(const envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(12, 16), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_mutable_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 8), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_resize_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 8), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_add_keys(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 8), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_set_fallback_policy(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_mutable_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 16), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_resize_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(12, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector_add_fallback_keys_subset(envoy_api_v2_Cluster_LbSubsetConfig_LbSubsetSelector *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.Cluster.LeastRequestLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_LeastRequestLbConfig *envoy_api_v2_Cluster_LeastRequestLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_LeastRequestLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_LeastRequestLbConfig *envoy_api_v2_Cluster_LeastRequestLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_LeastRequestLbConfig *ret = envoy_api_v2_Cluster_LeastRequestLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_LeastRequestLbConfig_serialize(const envoy_api_v2_Cluster_LeastRequestLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_LeastRequestLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_LeastRequestLbConfig_choice_count(const envoy_api_v2_Cluster_LeastRequestLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_LeastRequestLbConfig_set_choice_count(envoy_api_v2_Cluster_LeastRequestLbConfig *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Cluster_LeastRequestLbConfig_mutable_choice_count(envoy_api_v2_Cluster_LeastRequestLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Cluster_LeastRequestLbConfig_choice_count(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_LeastRequestLbConfig_set_choice_count(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.RingHashLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_RingHashLbConfig *envoy_api_v2_Cluster_RingHashLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_RingHashLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_RingHashLbConfig *envoy_api_v2_Cluster_RingHashLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_RingHashLbConfig *ret = envoy_api_v2_Cluster_RingHashLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_RingHashLbConfig_serialize(const envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_RingHashLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_minimum_ring_size(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t envoy_api_v2_Cluster_RingHashLbConfig_hash_function(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_maximum_ring_size(const envoy_api_v2_Cluster_RingHashLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(12, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_minimum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_mutable_minimum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_RingHashLbConfig_minimum_ring_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RingHashLbConfig_set_minimum_ring_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_hash_function(envoy_api_v2_Cluster_RingHashLbConfig *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RingHashLbConfig_set_maximum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_RingHashLbConfig_mutable_maximum_ring_size(envoy_api_v2_Cluster_RingHashLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_RingHashLbConfig_maximum_ring_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RingHashLbConfig_set_maximum_ring_size(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.OriginalDstLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_OriginalDstLbConfig *envoy_api_v2_Cluster_OriginalDstLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_OriginalDstLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_OriginalDstLbConfig *envoy_api_v2_Cluster_OriginalDstLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_OriginalDstLbConfig *ret = envoy_api_v2_Cluster_OriginalDstLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_OriginalDstLbConfig_serialize(const envoy_api_v2_Cluster_OriginalDstLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_OriginalDstLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_Cluster_OriginalDstLbConfig_use_http_header(const envoy_api_v2_Cluster_OriginalDstLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_OriginalDstLbConfig_set_use_http_header(envoy_api_v2_Cluster_OriginalDstLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig *envoy_api_v2_Cluster_CommonLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig *envoy_api_v2_Cluster_CommonLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_zone_aware_lb_config = 2,
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_locality_weighted_lb_config = 3,
+  envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_NOT_SET = 0
+} envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_case(const envoy_api_v2_Cluster_CommonLbConfig* msg) { return (envoy_api_v2_Cluster_CommonLbConfig_locality_config_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_healthy_panic_threshold(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_has_zone_aware_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 2); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* envoy_api_v2_Cluster_CommonLbConfig_zone_aware_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_has_locality_weighted_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* envoy_api_v2_Cluster_CommonLbConfig_locality_weighted_lb_config(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_CommonLbConfig_update_merge_window(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_ignore_new_hosts_until_first_hc(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_close_connections_on_host_set_change(const envoy_api_v2_Cluster_CommonLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_healthy_panic_threshold(envoy_api_v2_Cluster_CommonLbConfig *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_mutable_healthy_panic_threshold(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_Cluster_CommonLbConfig_healthy_panic_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_healthy_panic_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_zone_aware_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 2);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* envoy_api_v2_Cluster_CommonLbConfig_mutable_zone_aware_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*)envoy_api_v2_Cluster_CommonLbConfig_zone_aware_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_zone_aware_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_locality_weighted_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* envoy_api_v2_Cluster_CommonLbConfig_mutable_locality_weighted_lb_config(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig* sub = (struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*)envoy_api_v2_Cluster_CommonLbConfig_locality_weighted_lb_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig*)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_locality_weighted_lb_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_update_merge_window(envoy_api_v2_Cluster_CommonLbConfig *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_CommonLbConfig_mutable_update_merge_window(envoy_api_v2_Cluster_CommonLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_CommonLbConfig_update_merge_window(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_set_update_merge_window(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_ignore_new_hosts_until_first_hc(envoy_api_v2_Cluster_CommonLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_set_close_connections_on_host_set_change(envoy_api_v2_Cluster_CommonLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig.ZoneAwareLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_routing_enabled(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_min_cluster_size(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt64Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_fail_traffic_on_panic(const envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_routing_enabled(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_mutable_routing_enabled(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_routing_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_routing_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_min_cluster_size(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, struct google_protobuf_UInt64Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt64Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt64Value* envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_mutable_min_cluster_size(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, upb_arena *arena) {
+  struct google_protobuf_UInt64Value* sub = (struct google_protobuf_UInt64Value*)envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_min_cluster_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt64Value*)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_min_cluster_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig_set_fail_traffic_on_panic(envoy_api_v2_Cluster_CommonLbConfig_ZoneAwareLbConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Cluster.CommonLbConfig.LocalityWeightedLbConfig */
+
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *)upb_msg_new(&envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *ret = envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_serialize(const envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_CommonLbConfig_LocalityWeightedLbConfig_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.Cluster.RefreshRate */
+
+UPB_INLINE envoy_api_v2_Cluster_RefreshRate *envoy_api_v2_Cluster_RefreshRate_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_RefreshRate *)upb_msg_new(&envoy_api_v2_Cluster_RefreshRate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_RefreshRate *envoy_api_v2_Cluster_RefreshRate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_RefreshRate *ret = envoy_api_v2_Cluster_RefreshRate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_RefreshRate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_RefreshRate_serialize(const envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_RefreshRate_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_base_interval(const envoy_api_v2_Cluster_RefreshRate *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_max_interval(const envoy_api_v2_Cluster_RefreshRate *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_RefreshRate_set_base_interval(envoy_api_v2_Cluster_RefreshRate *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_mutable_base_interval(envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_RefreshRate_base_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RefreshRate_set_base_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Cluster_RefreshRate_set_max_interval(envoy_api_v2_Cluster_RefreshRate *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Cluster_RefreshRate_mutable_max_interval(envoy_api_v2_Cluster_RefreshRate *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Cluster_RefreshRate_max_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_RefreshRate_set_max_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.ExtensionProtocolOptionsEntry */
+
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *)upb_msg_new(&envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *ret = envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_serialize(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_key(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_value(const envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_key(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_value(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_mutable_value(envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_ExtensionProtocolOptionsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Cluster.TypedExtensionProtocolOptionsEntry */
+
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *)upb_msg_new(&envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *ret = envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_serialize(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_key(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_value(const envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_key(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_value(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_mutable_value(envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Cluster_TypedExtensionProtocolOptionsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.LoadBalancingPolicy */
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy *envoy_api_v2_LoadBalancingPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy *)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy *envoy_api_v2_LoadBalancingPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LoadBalancingPolicy *ret = envoy_api_v2_LoadBalancingPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LoadBalancingPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LoadBalancingPolicy_serialize(const envoy_api_v2_LoadBalancingPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LoadBalancingPolicy_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_LoadBalancingPolicy_Policy* const* envoy_api_v2_LoadBalancingPolicy_policies(const envoy_api_v2_LoadBalancingPolicy *msg, size_t *len) { return (const envoy_api_v2_LoadBalancingPolicy_Policy* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy** envoy_api_v2_LoadBalancingPolicy_mutable_policies(envoy_api_v2_LoadBalancingPolicy *msg, size_t *len) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy** envoy_api_v2_LoadBalancingPolicy_resize_policies(envoy_api_v2_LoadBalancingPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_LoadBalancingPolicy_Policy* envoy_api_v2_LoadBalancingPolicy_add_policies(envoy_api_v2_LoadBalancingPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_LoadBalancingPolicy_Policy* sub = (struct envoy_api_v2_LoadBalancingPolicy_Policy*)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.LoadBalancingPolicy.Policy */
+
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy *envoy_api_v2_LoadBalancingPolicy_Policy_new(upb_arena *arena) {
+  return (envoy_api_v2_LoadBalancingPolicy_Policy *)upb_msg_new(&envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LoadBalancingPolicy_Policy *envoy_api_v2_LoadBalancingPolicy_Policy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LoadBalancingPolicy_Policy *ret = envoy_api_v2_LoadBalancingPolicy_Policy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LoadBalancingPolicy_Policy_serialize(const envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LoadBalancingPolicy_Policy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_LoadBalancingPolicy_Policy_name(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_LoadBalancingPolicy_Policy_config(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_LoadBalancingPolicy_Policy_typed_config(const envoy_api_v2_LoadBalancingPolicy_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_name(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_LoadBalancingPolicy_Policy_mutable_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_LoadBalancingPolicy_Policy_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_LoadBalancingPolicy_Policy_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_LoadBalancingPolicy_Policy_set_typed_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_LoadBalancingPolicy_Policy_mutable_typed_config(envoy_api_v2_LoadBalancingPolicy_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_LoadBalancingPolicy_Policy_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_LoadBalancingPolicy_Policy_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.UpstreamBindConfig */
+
+UPB_INLINE envoy_api_v2_UpstreamBindConfig *envoy_api_v2_UpstreamBindConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_UpstreamBindConfig *)upb_msg_new(&envoy_api_v2_UpstreamBindConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_UpstreamBindConfig *envoy_api_v2_UpstreamBindConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_UpstreamBindConfig *ret = envoy_api_v2_UpstreamBindConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_UpstreamBindConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_UpstreamBindConfig_serialize(const envoy_api_v2_UpstreamBindConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_UpstreamBindConfig_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_UpstreamBindConfig_source_address(const envoy_api_v2_UpstreamBindConfig *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_UpstreamBindConfig_set_source_address(envoy_api_v2_UpstreamBindConfig *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_UpstreamBindConfig_mutable_source_address(envoy_api_v2_UpstreamBindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_UpstreamBindConfig_source_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_UpstreamBindConfig_set_source_address(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.UpstreamConnectionOptions */
+
+UPB_INLINE envoy_api_v2_UpstreamConnectionOptions *envoy_api_v2_UpstreamConnectionOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_UpstreamConnectionOptions *)upb_msg_new(&envoy_api_v2_UpstreamConnectionOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_UpstreamConnectionOptions *envoy_api_v2_UpstreamConnectionOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_UpstreamConnectionOptions *ret = envoy_api_v2_UpstreamConnectionOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_UpstreamConnectionOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_UpstreamConnectionOptions_serialize(const envoy_api_v2_UpstreamConnectionOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_UpstreamConnectionOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_TcpKeepalive* envoy_api_v2_UpstreamConnectionOptions_tcp_keepalive(const envoy_api_v2_UpstreamConnectionOptions *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TcpKeepalive*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_UpstreamConnectionOptions_set_tcp_keepalive(envoy_api_v2_UpstreamConnectionOptions *msg, struct envoy_api_v2_core_TcpKeepalive* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TcpKeepalive*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TcpKeepalive* envoy_api_v2_UpstreamConnectionOptions_mutable_tcp_keepalive(envoy_api_v2_UpstreamConnectionOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TcpKeepalive* sub = (struct envoy_api_v2_core_TcpKeepalive*)envoy_api_v2_UpstreamConnectionOptions_tcp_keepalive(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TcpKeepalive*)upb_msg_new(&envoy_api_v2_core_TcpKeepalive_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_UpstreamConnectionOptions_set_tcp_keepalive(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.c
new file mode 100644
index 0000000..52a072f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.c	
@@ -0,0 +1,109 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/circuit_breaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/circuit_breaker.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_cluster_CircuitBreakers_submsgs[1] = {
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_cluster_CircuitBreakers__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_msginit = {
+  &envoy_api_v2_cluster_CircuitBreakers_submsgs[0],
+  &envoy_api_v2_cluster_CircuitBreakers__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_cluster_CircuitBreakers_Thresholds_submsgs[6] = {
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_cluster_CircuitBreakers_Thresholds__fields[8] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(12, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(16, 24), 0, 1, 11, 1},
+  {4, UPB_SIZE(20, 32), 0, 1, 11, 1},
+  {5, UPB_SIZE(24, 40), 0, 1, 11, 1},
+  {6, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {7, UPB_SIZE(28, 48), 0, 1, 11, 1},
+  {8, UPB_SIZE(32, 56), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit = {
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds_submsgs[0],
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds__fields[0],
+  UPB_SIZE(40, 64), 8, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_submsgs[2] = {
+  &envoy_type_Percent_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit = {
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_submsgs[0],
+  &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h
new file mode 100644
index 0000000..fee3ca8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/circuit_breaker.upb.h	
@@ -0,0 +1,242 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/circuit_breaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_CircuitBreakers;
+struct envoy_api_v2_cluster_CircuitBreakers_Thresholds;
+struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget;
+typedef struct envoy_api_v2_cluster_CircuitBreakers envoy_api_v2_cluster_CircuitBreakers;
+typedef struct envoy_api_v2_cluster_CircuitBreakers_Thresholds envoy_api_v2_cluster_CircuitBreakers_Thresholds;
+typedef struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit;
+extern const upb_msglayout envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit;
+struct envoy_type_Percent;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.cluster.CircuitBreakers */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers *envoy_api_v2_cluster_CircuitBreakers_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers *envoy_api_v2_cluster_CircuitBreakers_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers *ret = envoy_api_v2_cluster_CircuitBreakers_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_serialize(const envoy_api_v2_cluster_CircuitBreakers *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_cluster_CircuitBreakers_Thresholds* const* envoy_api_v2_cluster_CircuitBreakers_thresholds(const envoy_api_v2_cluster_CircuitBreakers *msg, size_t *len) { return (const envoy_api_v2_cluster_CircuitBreakers_Thresholds* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds** envoy_api_v2_cluster_CircuitBreakers_mutable_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, size_t *len) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds** envoy_api_v2_cluster_CircuitBreakers_resize_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers_Thresholds* envoy_api_v2_cluster_CircuitBreakers_add_thresholds(envoy_api_v2_cluster_CircuitBreakers *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers_Thresholds* sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.cluster.CircuitBreakers.Thresholds */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds *envoy_api_v2_cluster_CircuitBreakers_Thresholds_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds *envoy_api_v2_cluster_CircuitBreakers_Thresholds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers_Thresholds *ret = envoy_api_v2_cluster_CircuitBreakers_Thresholds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_Thresholds_serialize(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_cluster_CircuitBreakers_Thresholds_priority(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connections(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_pending_requests(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_requests(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_retries(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool envoy_api_v2_cluster_CircuitBreakers_Thresholds_track_remaining(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connection_pools(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* envoy_api_v2_cluster_CircuitBreakers_Thresholds_retry_budget(const envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*, UPB_SIZE(32, 56)); }
+
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_priority(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connections(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_connections(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connections(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connections(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_pending_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_pending_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_pending_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_pending_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_requests(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_retries(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_retries(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_retries(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_retries(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_track_remaining(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connection_pools(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_max_connection_pools(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_max_connection_pools(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_max_connection_pools(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_retry_budget(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* envoy_api_v2_cluster_CircuitBreakers_Thresholds_mutable_retry_budget(envoy_api_v2_cluster_CircuitBreakers_Thresholds *msg, upb_arena *arena) {
+  struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget* sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_retry_budget(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget*)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_set_retry_budget(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.cluster.CircuitBreakers.Thresholds.RetryBudget */
+
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *)upb_msg_new(&envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *ret = envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_serialize(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_Percent* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_budget_percent(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_min_retry_concurrency(const envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_budget_percent(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_mutable_budget_percent(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_budget_percent(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_budget_percent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_min_retry_concurrency(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_mutable_min_retry_concurrency(envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_min_retry_concurrency(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_CircuitBreakers_Thresholds_RetryBudget_set_min_retry_concurrency(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_CIRCUIT_BREAKER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.c
new file mode 100644
index 0000000..4ef9056
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.c	
@@ -0,0 +1,62 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/filter.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/filter.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_cluster_Filter_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_cluster_Filter__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_cluster_Filter_msginit = {
+  &envoy_api_v2_cluster_Filter_submsgs[0],
+  &envoy_api_v2_cluster_Filter__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h
new file mode 100644
index 0000000..f42b8f5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/filter.upb.h	
@@ -0,0 +1,93 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/filter.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_Filter;
+typedef struct envoy_api_v2_cluster_Filter envoy_api_v2_cluster_Filter;
+extern const upb_msglayout envoy_api_v2_cluster_Filter_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* envoy.api.v2.cluster.Filter */
+
+UPB_INLINE envoy_api_v2_cluster_Filter *envoy_api_v2_cluster_Filter_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_Filter *)upb_msg_new(&envoy_api_v2_cluster_Filter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_Filter *envoy_api_v2_cluster_Filter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_Filter *ret = envoy_api_v2_cluster_Filter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_Filter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_Filter_serialize(const envoy_api_v2_cluster_Filter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_Filter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_cluster_Filter_name(const envoy_api_v2_cluster_Filter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_cluster_Filter_typed_config(const envoy_api_v2_cluster_Filter *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_cluster_Filter_set_name(envoy_api_v2_cluster_Filter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_Filter_set_typed_config(envoy_api_v2_cluster_Filter *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_cluster_Filter_mutable_typed_config(envoy_api_v2_cluster_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_cluster_Filter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_Filter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_FILTER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.c
new file mode 100644
index 0000000..37c228e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.c	
@@ -0,0 +1,86 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/outlier_detection.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h"
+#else
+  #include  "envoy/api/v2/cluster/outlier_detection.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_cluster_OutlierDetection_submsgs[19] = {
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_cluster_OutlierDetection__fields[20] = {
+  {1, UPB_SIZE(4, 8), 0, 1, 11, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {4, UPB_SIZE(16, 32), 0, 1, 11, 1},
+  {5, UPB_SIZE(20, 40), 0, 1, 11, 1},
+  {6, UPB_SIZE(24, 48), 0, 1, 11, 1},
+  {7, UPB_SIZE(28, 56), 0, 1, 11, 1},
+  {8, UPB_SIZE(32, 64), 0, 1, 11, 1},
+  {9, UPB_SIZE(36, 72), 0, 1, 11, 1},
+  {10, UPB_SIZE(40, 80), 0, 1, 11, 1},
+  {11, UPB_SIZE(44, 88), 0, 1, 11, 1},
+  {12, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {13, UPB_SIZE(48, 96), 0, 1, 11, 1},
+  {14, UPB_SIZE(52, 104), 0, 1, 11, 1},
+  {15, UPB_SIZE(56, 112), 0, 1, 11, 1},
+  {16, UPB_SIZE(60, 120), 0, 1, 11, 1},
+  {17, UPB_SIZE(64, 128), 0, 1, 11, 1},
+  {18, UPB_SIZE(68, 136), 0, 1, 11, 1},
+  {19, UPB_SIZE(72, 144), 0, 1, 11, 1},
+  {20, UPB_SIZE(76, 152), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_cluster_OutlierDetection_msginit = {
+  &envoy_api_v2_cluster_OutlierDetection_submsgs[0],
+  &envoy_api_v2_cluster_OutlierDetection__fields[0],
+  UPB_SIZE(80, 160), 20, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h
new file mode 100644
index 0000000..b5f3fb8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/cluster/outlier_detection.upb.h	
@@ -0,0 +1,329 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/cluster/outlier_detection.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_
+#define ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_cluster_OutlierDetection;
+typedef struct envoy_api_v2_cluster_OutlierDetection envoy_api_v2_cluster_OutlierDetection;
+extern const upb_msglayout envoy_api_v2_cluster_OutlierDetection_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.cluster.OutlierDetection */
+
+UPB_INLINE envoy_api_v2_cluster_OutlierDetection *envoy_api_v2_cluster_OutlierDetection_new(upb_arena *arena) {
+  return (envoy_api_v2_cluster_OutlierDetection *)upb_msg_new(&envoy_api_v2_cluster_OutlierDetection_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_cluster_OutlierDetection *envoy_api_v2_cluster_OutlierDetection_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_cluster_OutlierDetection *ret = envoy_api_v2_cluster_OutlierDetection_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_cluster_OutlierDetection_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_cluster_OutlierDetection_serialize(const envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_cluster_OutlierDetection_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_5xx(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_interval(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_base_ejection_time(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_max_ejection_percent(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_5xx(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_success_rate(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_minimum_hosts(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_request_volume(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_success_rate_stdev_factor(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_gateway_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(40, 80)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_gateway_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(44, 88)); }
+UPB_INLINE bool envoy_api_v2_cluster_OutlierDetection_split_external_local_origin_errors(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_consecutive_local_origin_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(48, 96)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_local_origin_failure(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(52, 104)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_local_origin_success_rate(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 112)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_threshold(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(60, 120)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(64, 128)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage_local_origin(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(68, 136)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_minimum_hosts(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(72, 144)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_failure_percentage_request_volume(const envoy_api_v2_cluster_OutlierDetection *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(76, 152)); }
+
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_5xx(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_5xx(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_interval(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_mutable_interval(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_cluster_OutlierDetection_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_base_ejection_time(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_cluster_OutlierDetection_mutable_base_ejection_time(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_cluster_OutlierDetection_base_ejection_time(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_base_ejection_time(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_max_ejection_percent(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_max_ejection_percent(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_max_ejection_percent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_max_ejection_percent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_5xx(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_5xx(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_5xx(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_success_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_success_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_minimum_hosts(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_minimum_hosts(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_request_volume(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_request_volume(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_success_rate_stdev_factor(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_success_rate_stdev_factor(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_success_rate_stdev_factor(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_success_rate_stdev_factor(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(40, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_gateway_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_gateway_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(44, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_gateway_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_gateway_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_gateway_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_split_external_local_origin_errors(envoy_api_v2_cluster_OutlierDetection *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(48, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_consecutive_local_origin_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_consecutive_local_origin_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(52, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_consecutive_local_origin_failure(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_consecutive_local_origin_failure(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_consecutive_local_origin_failure(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_local_origin_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_local_origin_success_rate(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_local_origin_success_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_local_origin_success_rate(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_threshold(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(60, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_threshold(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(64, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_failure_percentage(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage_local_origin(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(68, 136)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_enforcing_failure_percentage_local_origin(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_enforcing_failure_percentage_local_origin(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_enforcing_failure_percentage_local_origin(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(72, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_minimum_hosts(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_minimum_hosts(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_minimum_hosts(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(76, 152)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_cluster_OutlierDetection_mutable_failure_percentage_request_volume(envoy_api_v2_cluster_OutlierDetection *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_cluster_OutlierDetection_failure_percentage_request_volume(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_cluster_OutlierDetection_set_failure_percentage_request_volume(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CLUSTER_OUTLIER_DETECTION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.c
new file mode 100644
index 0000000..cbaca07
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.c	
@@ -0,0 +1,143 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/address.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_api_v2_core_Pipe__fields[2] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 13, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Pipe_msginit = {
+  NULL,
+  &envoy_api_v2_core_Pipe__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_SocketAddress__fields[6] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(12, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(28, 48), UPB_SIZE(-37, -65), 0, 13, 1},
+  {4, UPB_SIZE(28, 48), UPB_SIZE(-37, -65), 0, 9, 1},
+  {5, UPB_SIZE(20, 32), 0, 0, 9, 1},
+  {6, UPB_SIZE(8, 8), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_SocketAddress_msginit = {
+  NULL,
+  &envoy_api_v2_core_SocketAddress__fields[0],
+  UPB_SIZE(40, 80), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_TcpKeepalive_submsgs[3] = {
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_TcpKeepalive__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_TcpKeepalive_msginit = {
+  &envoy_api_v2_core_TcpKeepalive_submsgs[0],
+  &envoy_api_v2_core_TcpKeepalive__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_BindConfig_submsgs[3] = {
+  &envoy_api_v2_core_SocketAddress_msginit,
+  &envoy_api_v2_core_SocketOption_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_BindConfig__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 2, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 1, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_BindConfig_msginit = {
+  &envoy_api_v2_core_BindConfig_submsgs[0],
+  &envoy_api_v2_core_BindConfig__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Address_submsgs[2] = {
+  &envoy_api_v2_core_Pipe_msginit,
+  &envoy_api_v2_core_SocketAddress_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Address__fields[2] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Address_msginit = {
+  &envoy_api_v2_core_Address_submsgs[0],
+  &envoy_api_v2_core_Address__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_CidrRange_submsgs[1] = {
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_CidrRange__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_CidrRange_msginit = {
+  &envoy_api_v2_core_CidrRange_submsgs[0],
+  &envoy_api_v2_core_CidrRange__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h
new file mode 100644
index 0000000..29f180f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h	
@@ -0,0 +1,352 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/address.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_Pipe;
+struct envoy_api_v2_core_SocketAddress;
+struct envoy_api_v2_core_TcpKeepalive;
+struct envoy_api_v2_core_BindConfig;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_CidrRange;
+typedef struct envoy_api_v2_core_Pipe envoy_api_v2_core_Pipe;
+typedef struct envoy_api_v2_core_SocketAddress envoy_api_v2_core_SocketAddress;
+typedef struct envoy_api_v2_core_TcpKeepalive envoy_api_v2_core_TcpKeepalive;
+typedef struct envoy_api_v2_core_BindConfig envoy_api_v2_core_BindConfig;
+typedef struct envoy_api_v2_core_Address envoy_api_v2_core_Address;
+typedef struct envoy_api_v2_core_CidrRange envoy_api_v2_core_CidrRange;
+extern const upb_msglayout envoy_api_v2_core_Pipe_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketAddress_msginit;
+extern const upb_msglayout envoy_api_v2_core_TcpKeepalive_msginit;
+extern const upb_msglayout envoy_api_v2_core_BindConfig_msginit;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_CidrRange_msginit;
+struct envoy_api_v2_core_SocketOption;
+struct google_protobuf_BoolValue;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_SocketAddress_TCP = 0,
+  envoy_api_v2_core_SocketAddress_UDP = 1
+} envoy_api_v2_core_SocketAddress_Protocol;
+
+
+/* envoy.api.v2.core.Pipe */
+
+UPB_INLINE envoy_api_v2_core_Pipe *envoy_api_v2_core_Pipe_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Pipe *)upb_msg_new(&envoy_api_v2_core_Pipe_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Pipe *envoy_api_v2_core_Pipe_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Pipe *ret = envoy_api_v2_core_Pipe_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Pipe_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Pipe_serialize(const envoy_api_v2_core_Pipe *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Pipe_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Pipe_path(const envoy_api_v2_core_Pipe *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE uint32_t envoy_api_v2_core_Pipe_mode(const envoy_api_v2_core_Pipe *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_Pipe_set_path(envoy_api_v2_core_Pipe *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Pipe_set_mode(envoy_api_v2_core_Pipe *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.SocketAddress */
+
+UPB_INLINE envoy_api_v2_core_SocketAddress *envoy_api_v2_core_SocketAddress_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SocketAddress *)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SocketAddress *envoy_api_v2_core_SocketAddress_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SocketAddress *ret = envoy_api_v2_core_SocketAddress_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SocketAddress_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SocketAddress_serialize(const envoy_api_v2_core_SocketAddress *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SocketAddress_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_SocketAddress_port_specifier_port_value = 3,
+  envoy_api_v2_core_SocketAddress_port_specifier_named_port = 4,
+  envoy_api_v2_core_SocketAddress_port_specifier_NOT_SET = 0
+} envoy_api_v2_core_SocketAddress_port_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_SocketAddress_port_specifier_oneofcases envoy_api_v2_core_SocketAddress_port_specifier_case(const envoy_api_v2_core_SocketAddress* msg) { return (envoy_api_v2_core_SocketAddress_port_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(36, 64)); }
+
+UPB_INLINE int32_t envoy_api_v2_core_SocketAddress_protocol(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_address(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_has_port_value(const envoy_api_v2_core_SocketAddress *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 64), 3); }
+UPB_INLINE uint32_t envoy_api_v2_core_SocketAddress_port_value(const envoy_api_v2_core_SocketAddress *msg) { return UPB_READ_ONEOF(msg, uint32_t, UPB_SIZE(28, 48), UPB_SIZE(36, 64), 3, 0); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_has_named_port(const envoy_api_v2_core_SocketAddress *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 64), 4); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_named_port(const envoy_api_v2_core_SocketAddress *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 48), UPB_SIZE(36, 64), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketAddress_resolver_name(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)); }
+UPB_INLINE bool envoy_api_v2_core_SocketAddress_ipv4_compat(const envoy_api_v2_core_SocketAddress *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_protocol(envoy_api_v2_core_SocketAddress *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_address(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_port_value(envoy_api_v2_core_SocketAddress *msg, uint32_t value) {
+  UPB_WRITE_ONEOF(msg, uint32_t, UPB_SIZE(28, 48), value, UPB_SIZE(36, 64), 3);
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_named_port(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 48), value, UPB_SIZE(36, 64), 4);
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_resolver_name(envoy_api_v2_core_SocketAddress *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketAddress_set_ipv4_compat(envoy_api_v2_core_SocketAddress *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.core.TcpKeepalive */
+
+UPB_INLINE envoy_api_v2_core_TcpKeepalive *envoy_api_v2_core_TcpKeepalive_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TcpKeepalive *)upb_msg_new(&envoy_api_v2_core_TcpKeepalive_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TcpKeepalive *envoy_api_v2_core_TcpKeepalive_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TcpKeepalive *ret = envoy_api_v2_core_TcpKeepalive_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TcpKeepalive_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TcpKeepalive_serialize(const envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TcpKeepalive_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_probes(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_time(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_keepalive_interval(const envoy_api_v2_core_TcpKeepalive *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_probes(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_probes(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_probes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_probes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_time(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_time(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_time(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_time(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TcpKeepalive_set_keepalive_interval(envoy_api_v2_core_TcpKeepalive *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_TcpKeepalive_mutable_keepalive_interval(envoy_api_v2_core_TcpKeepalive *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_TcpKeepalive_keepalive_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TcpKeepalive_set_keepalive_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.BindConfig */
+
+UPB_INLINE envoy_api_v2_core_BindConfig *envoy_api_v2_core_BindConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_core_BindConfig *)upb_msg_new(&envoy_api_v2_core_BindConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_BindConfig *envoy_api_v2_core_BindConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_BindConfig *ret = envoy_api_v2_core_BindConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_BindConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_BindConfig_serialize(const envoy_api_v2_core_BindConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_BindConfig_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_SocketAddress* envoy_api_v2_core_BindConfig_source_address(const envoy_api_v2_core_BindConfig *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_BindConfig_freebind(const envoy_api_v2_core_BindConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_SocketOption* const* envoy_api_v2_core_BindConfig_socket_options(const envoy_api_v2_core_BindConfig *msg, size_t *len) { return (const struct envoy_api_v2_core_SocketOption* const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void envoy_api_v2_core_BindConfig_set_source_address(envoy_api_v2_core_BindConfig *msg, envoy_api_v2_core_SocketAddress* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketAddress* envoy_api_v2_core_BindConfig_mutable_source_address(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketAddress* sub = (struct envoy_api_v2_core_SocketAddress*)envoy_api_v2_core_BindConfig_source_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SocketAddress*)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BindConfig_set_source_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_BindConfig_set_freebind(envoy_api_v2_core_BindConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_BindConfig_mutable_freebind(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_BindConfig_freebind(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BindConfig_set_freebind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_core_BindConfig_mutable_socket_options(envoy_api_v2_core_BindConfig *msg, size_t *len) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_core_BindConfig_resize_socket_options(envoy_api_v2_core_BindConfig *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption* envoy_api_v2_core_BindConfig_add_socket_options(envoy_api_v2_core_BindConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketOption* sub = (struct envoy_api_v2_core_SocketOption*)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.Address */
+
+UPB_INLINE envoy_api_v2_core_Address *envoy_api_v2_core_Address_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Address *)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Address *envoy_api_v2_core_Address_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Address *ret = envoy_api_v2_core_Address_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Address_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Address_serialize(const envoy_api_v2_core_Address *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Address_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Address_address_socket_address = 1,
+  envoy_api_v2_core_Address_address_pipe = 2,
+  envoy_api_v2_core_Address_address_NOT_SET = 0
+} envoy_api_v2_core_Address_address_oneofcases;
+UPB_INLINE envoy_api_v2_core_Address_address_oneofcases envoy_api_v2_core_Address_address_case(const envoy_api_v2_core_Address* msg) { return (envoy_api_v2_core_Address_address_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_Address_has_socket_address(const envoy_api_v2_core_Address *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_SocketAddress* envoy_api_v2_core_Address_socket_address(const envoy_api_v2_core_Address *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_Address_has_pipe(const envoy_api_v2_core_Address *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_core_Pipe* envoy_api_v2_core_Address_pipe(const envoy_api_v2_core_Address *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_Pipe*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_Address_set_socket_address(envoy_api_v2_core_Address *msg, envoy_api_v2_core_SocketAddress* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_SocketAddress*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketAddress* envoy_api_v2_core_Address_mutable_socket_address(envoy_api_v2_core_Address *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketAddress* sub = (struct envoy_api_v2_core_SocketAddress*)envoy_api_v2_core_Address_socket_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SocketAddress*)upb_msg_new(&envoy_api_v2_core_SocketAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Address_set_socket_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Address_set_pipe(envoy_api_v2_core_Address *msg, envoy_api_v2_core_Pipe* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_Pipe*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_Pipe* envoy_api_v2_core_Address_mutable_pipe(envoy_api_v2_core_Address *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Pipe* sub = (struct envoy_api_v2_core_Pipe*)envoy_api_v2_core_Address_pipe(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Pipe*)upb_msg_new(&envoy_api_v2_core_Pipe_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Address_set_pipe(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.CidrRange */
+
+UPB_INLINE envoy_api_v2_core_CidrRange *envoy_api_v2_core_CidrRange_new(upb_arena *arena) {
+  return (envoy_api_v2_core_CidrRange *)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_CidrRange *envoy_api_v2_core_CidrRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_CidrRange *ret = envoy_api_v2_core_CidrRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_CidrRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_CidrRange_serialize(const envoy_api_v2_core_CidrRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_CidrRange_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_CidrRange_address_prefix(const envoy_api_v2_core_CidrRange *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_CidrRange_prefix_len(const envoy_api_v2_core_CidrRange *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_CidrRange_set_address_prefix(envoy_api_v2_core_CidrRange *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_CidrRange_set_prefix_len(envoy_api_v2_core_CidrRange *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_CidrRange_mutable_prefix_len(envoy_api_v2_core_CidrRange *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_CidrRange_prefix_len(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_CidrRange_set_prefix_len(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_ADDRESS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.c
new file mode 100644
index 0000000..d09248a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.c	
@@ -0,0 +1,340 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/base.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h"
+#else
+  #include  "envoy/api/v2/core/http_uri.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/semantic_version.upb.h"
+#else
+  #include  "envoy/type/semantic_version.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_api_v2_core_Locality__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(16, 32), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Locality_msginit = {
+  NULL,
+  &envoy_api_v2_core_Locality__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_BuildVersion_submsgs[2] = {
+  &envoy_type_SemanticVersion_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_BuildVersion__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_BuildVersion_msginit = {
+  &envoy_api_v2_core_BuildVersion_submsgs[0],
+  &envoy_api_v2_core_BuildVersion__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Extension_submsgs[1] = {
+  &envoy_api_v2_core_BuildVersion_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Extension__fields[5] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 0, 0, 9, 1},
+  {3, UPB_SIZE(20, 40), 0, 0, 9, 1},
+  {4, UPB_SIZE(28, 56), 0, 0, 11, 1},
+  {5, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Extension_msginit = {
+  &envoy_api_v2_core_Extension_submsgs[0],
+  &envoy_api_v2_core_Extension__fields[0],
+  UPB_SIZE(32, 64), 5, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Node_submsgs[4] = {
+  &envoy_api_v2_core_BuildVersion_msginit,
+  &envoy_api_v2_core_Extension_msginit,
+  &envoy_api_v2_core_Locality_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Node__fields[10] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(32, 64), 0, 3, 11, 1},
+  {4, UPB_SIZE(36, 72), 0, 2, 11, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {6, UPB_SIZE(24, 48), 0, 0, 9, 1},
+  {7, UPB_SIZE(48, 96), UPB_SIZE(-57, -113), 0, 9, 1},
+  {8, UPB_SIZE(48, 96), UPB_SIZE(-57, -113), 0, 11, 1},
+  {9, UPB_SIZE(40, 80), 0, 1, 11, 3},
+  {10, UPB_SIZE(44, 88), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_Node_msginit = {
+  &envoy_api_v2_core_Node_submsgs[0],
+  &envoy_api_v2_core_Node__fields[0],
+  UPB_SIZE(64, 128), 10, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Metadata_submsgs[1] = {
+  &envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Metadata__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_Metadata_msginit = {
+  &envoy_api_v2_core_Metadata_submsgs[0],
+  &envoy_api_v2_core_Metadata__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Metadata_FilterMetadataEntry_submsgs[1] = {
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Metadata_FilterMetadataEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit = {
+  &envoy_api_v2_core_Metadata_FilterMetadataEntry_submsgs[0],
+  &envoy_api_v2_core_Metadata_FilterMetadataEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_RuntimeUInt32__fields[2] = {
+  {2, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {3, UPB_SIZE(4, 8), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_RuntimeUInt32_msginit = {
+  NULL,
+  &envoy_api_v2_core_RuntimeUInt32__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_RuntimeFeatureFlag_submsgs[1] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_RuntimeFeatureFlag__fields[2] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_RuntimeFeatureFlag_msginit = {
+  &envoy_api_v2_core_RuntimeFeatureFlag_submsgs[0],
+  &envoy_api_v2_core_RuntimeFeatureFlag__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HeaderValue__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HeaderValue_msginit = {
+  NULL,
+  &envoy_api_v2_core_HeaderValue__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HeaderValueOption_submsgs[2] = {
+  &envoy_api_v2_core_HeaderValue_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HeaderValueOption__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit = {
+  &envoy_api_v2_core_HeaderValueOption_submsgs[0],
+  &envoy_api_v2_core_HeaderValueOption__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HeaderMap_submsgs[1] = {
+  &envoy_api_v2_core_HeaderValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HeaderMap__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_HeaderMap_msginit = {
+  &envoy_api_v2_core_HeaderMap_submsgs[0],
+  &envoy_api_v2_core_HeaderMap__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_DataSource__fields[3] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 12, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_DataSource_msginit = {
+  NULL,
+  &envoy_api_v2_core_DataSource__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_RemoteDataSource_submsgs[1] = {
+  &envoy_api_v2_core_HttpUri_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_RemoteDataSource__fields[2] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_RemoteDataSource_msginit = {
+  &envoy_api_v2_core_RemoteDataSource_submsgs[0],
+  &envoy_api_v2_core_RemoteDataSource__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_AsyncDataSource_submsgs[2] = {
+  &envoy_api_v2_core_DataSource_msginit,
+  &envoy_api_v2_core_RemoteDataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_AsyncDataSource__fields[2] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_AsyncDataSource_msginit = {
+  &envoy_api_v2_core_AsyncDataSource_submsgs[0],
+  &envoy_api_v2_core_AsyncDataSource__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_TransportSocket_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_TransportSocket__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_TransportSocket_msginit = {
+  &envoy_api_v2_core_TransportSocket_submsgs[0],
+  &envoy_api_v2_core_TransportSocket__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_SocketOption__fields[6] = {
+  {1, UPB_SIZE(24, 24), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 3, 1},
+  {4, UPB_SIZE(32, 40), UPB_SIZE(-41, -57), 0, 3, 1},
+  {5, UPB_SIZE(32, 40), UPB_SIZE(-41, -57), 0, 12, 1},
+  {6, UPB_SIZE(16, 16), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_SocketOption_msginit = {
+  NULL,
+  &envoy_api_v2_core_SocketOption__fields[0],
+  UPB_SIZE(48, 64), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_RuntimeFractionalPercent_submsgs[1] = {
+  &envoy_type_FractionalPercent_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_RuntimeFractionalPercent__fields[2] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_RuntimeFractionalPercent_msginit = {
+  &envoy_api_v2_core_RuntimeFractionalPercent_submsgs[0],
+  &envoy_api_v2_core_RuntimeFractionalPercent__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_ControlPlane__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_ControlPlane_msginit = {
+  NULL,
+  &envoy_api_v2_core_ControlPlane__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h
new file mode 100644
index 0000000..858e029
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h	
@@ -0,0 +1,871 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/base.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_Locality;
+struct envoy_api_v2_core_BuildVersion;
+struct envoy_api_v2_core_Extension;
+struct envoy_api_v2_core_Node;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_Metadata_FilterMetadataEntry;
+struct envoy_api_v2_core_RuntimeUInt32;
+struct envoy_api_v2_core_RuntimeFeatureFlag;
+struct envoy_api_v2_core_HeaderValue;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_core_HeaderMap;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_RemoteDataSource;
+struct envoy_api_v2_core_AsyncDataSource;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_api_v2_core_SocketOption;
+struct envoy_api_v2_core_RuntimeFractionalPercent;
+struct envoy_api_v2_core_ControlPlane;
+typedef struct envoy_api_v2_core_Locality envoy_api_v2_core_Locality;
+typedef struct envoy_api_v2_core_BuildVersion envoy_api_v2_core_BuildVersion;
+typedef struct envoy_api_v2_core_Extension envoy_api_v2_core_Extension;
+typedef struct envoy_api_v2_core_Node envoy_api_v2_core_Node;
+typedef struct envoy_api_v2_core_Metadata envoy_api_v2_core_Metadata;
+typedef struct envoy_api_v2_core_Metadata_FilterMetadataEntry envoy_api_v2_core_Metadata_FilterMetadataEntry;
+typedef struct envoy_api_v2_core_RuntimeUInt32 envoy_api_v2_core_RuntimeUInt32;
+typedef struct envoy_api_v2_core_RuntimeFeatureFlag envoy_api_v2_core_RuntimeFeatureFlag;
+typedef struct envoy_api_v2_core_HeaderValue envoy_api_v2_core_HeaderValue;
+typedef struct envoy_api_v2_core_HeaderValueOption envoy_api_v2_core_HeaderValueOption;
+typedef struct envoy_api_v2_core_HeaderMap envoy_api_v2_core_HeaderMap;
+typedef struct envoy_api_v2_core_DataSource envoy_api_v2_core_DataSource;
+typedef struct envoy_api_v2_core_RemoteDataSource envoy_api_v2_core_RemoteDataSource;
+typedef struct envoy_api_v2_core_AsyncDataSource envoy_api_v2_core_AsyncDataSource;
+typedef struct envoy_api_v2_core_TransportSocket envoy_api_v2_core_TransportSocket;
+typedef struct envoy_api_v2_core_SocketOption envoy_api_v2_core_SocketOption;
+typedef struct envoy_api_v2_core_RuntimeFractionalPercent envoy_api_v2_core_RuntimeFractionalPercent;
+typedef struct envoy_api_v2_core_ControlPlane envoy_api_v2_core_ControlPlane;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout envoy_api_v2_core_BuildVersion_msginit;
+extern const upb_msglayout envoy_api_v2_core_Extension_msginit;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeUInt32_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFeatureFlag_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValue_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderMap_msginit;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_RemoteDataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_AsyncDataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFractionalPercent_msginit;
+extern const upb_msglayout envoy_api_v2_core_ControlPlane_msginit;
+struct envoy_api_v2_core_HttpUri;
+struct envoy_type_FractionalPercent;
+struct envoy_type_SemanticVersion;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_HttpUri_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout envoy_type_SemanticVersion_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+typedef enum {
+  envoy_api_v2_core_METHOD_UNSPECIFIED = 0,
+  envoy_api_v2_core_GET = 1,
+  envoy_api_v2_core_HEAD = 2,
+  envoy_api_v2_core_POST = 3,
+  envoy_api_v2_core_PUT = 4,
+  envoy_api_v2_core_DELETE = 5,
+  envoy_api_v2_core_CONNECT = 6,
+  envoy_api_v2_core_OPTIONS = 7,
+  envoy_api_v2_core_TRACE = 8,
+  envoy_api_v2_core_PATCH = 9
+} envoy_api_v2_core_RequestMethod;
+
+typedef enum {
+  envoy_api_v2_core_DEFAULT = 0,
+  envoy_api_v2_core_HIGH = 1
+} envoy_api_v2_core_RoutingPriority;
+
+typedef enum {
+  envoy_api_v2_core_SocketOption_STATE_PREBIND = 0,
+  envoy_api_v2_core_SocketOption_STATE_BOUND = 1,
+  envoy_api_v2_core_SocketOption_STATE_LISTENING = 2
+} envoy_api_v2_core_SocketOption_SocketState;
+
+typedef enum {
+  envoy_api_v2_core_UNSPECIFIED = 0,
+  envoy_api_v2_core_INBOUND = 1,
+  envoy_api_v2_core_OUTBOUND = 2
+} envoy_api_v2_core_TrafficDirection;
+
+
+/* envoy.api.v2.core.Locality */
+
+UPB_INLINE envoy_api_v2_core_Locality *envoy_api_v2_core_Locality_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Locality *)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Locality *envoy_api_v2_core_Locality_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Locality *ret = envoy_api_v2_core_Locality_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Locality_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Locality_serialize(const envoy_api_v2_core_Locality *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Locality_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_region(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_zone(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Locality_sub_zone(const envoy_api_v2_core_Locality *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_core_Locality_set_region(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Locality_set_zone(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Locality_set_sub_zone(envoy_api_v2_core_Locality *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+
+/* envoy.api.v2.core.BuildVersion */
+
+UPB_INLINE envoy_api_v2_core_BuildVersion *envoy_api_v2_core_BuildVersion_new(upb_arena *arena) {
+  return (envoy_api_v2_core_BuildVersion *)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_BuildVersion *envoy_api_v2_core_BuildVersion_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_BuildVersion *ret = envoy_api_v2_core_BuildVersion_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_BuildVersion_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_BuildVersion_serialize(const envoy_api_v2_core_BuildVersion *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_BuildVersion_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_SemanticVersion* envoy_api_v2_core_BuildVersion_version(const envoy_api_v2_core_BuildVersion *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_SemanticVersion*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_BuildVersion_metadata(const envoy_api_v2_core_BuildVersion *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_BuildVersion_set_version(envoy_api_v2_core_BuildVersion *msg, struct envoy_type_SemanticVersion* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_SemanticVersion*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_SemanticVersion* envoy_api_v2_core_BuildVersion_mutable_version(envoy_api_v2_core_BuildVersion *msg, upb_arena *arena) {
+  struct envoy_type_SemanticVersion* sub = (struct envoy_type_SemanticVersion*)envoy_api_v2_core_BuildVersion_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_SemanticVersion*)upb_msg_new(&envoy_type_SemanticVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BuildVersion_set_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_BuildVersion_set_metadata(envoy_api_v2_core_BuildVersion *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_BuildVersion_mutable_metadata(envoy_api_v2_core_BuildVersion *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_BuildVersion_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_BuildVersion_set_metadata(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Extension */
+
+UPB_INLINE envoy_api_v2_core_Extension *envoy_api_v2_core_Extension_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Extension *)upb_msg_new(&envoy_api_v2_core_Extension_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Extension *envoy_api_v2_core_Extension_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Extension *ret = envoy_api_v2_core_Extension_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Extension_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Extension_serialize(const envoy_api_v2_core_Extension *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Extension_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_name(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_category(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Extension_type_descriptor(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE const envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Extension_version(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_BuildVersion*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool envoy_api_v2_core_Extension_disabled(const envoy_api_v2_core_Extension *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_Extension_set_name(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_category(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_type_descriptor(envoy_api_v2_core_Extension *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_version(envoy_api_v2_core_Extension *msg, envoy_api_v2_core_BuildVersion* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_BuildVersion*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Extension_mutable_version(envoy_api_v2_core_Extension *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BuildVersion* sub = (struct envoy_api_v2_core_BuildVersion*)envoy_api_v2_core_Extension_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BuildVersion*)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Extension_set_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Extension_set_disabled(envoy_api_v2_core_Extension *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.Node */
+
+UPB_INLINE envoy_api_v2_core_Node *envoy_api_v2_core_Node_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Node *)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Node *envoy_api_v2_core_Node_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Node *ret = envoy_api_v2_core_Node_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Node_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Node_serialize(const envoy_api_v2_core_Node *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Node_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Node_user_agent_version_type_user_agent_version = 7,
+  envoy_api_v2_core_Node_user_agent_version_type_user_agent_build_version = 8,
+  envoy_api_v2_core_Node_user_agent_version_type_NOT_SET = 0
+} envoy_api_v2_core_Node_user_agent_version_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_Node_user_agent_version_type_oneofcases envoy_api_v2_core_Node_user_agent_version_type_case(const envoy_api_v2_core_Node* msg) { return (envoy_api_v2_core_Node_user_agent_version_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_Node_id(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_cluster(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_Node_metadata(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(32, 64)); }
+UPB_INLINE const envoy_api_v2_core_Locality* envoy_api_v2_core_Node_locality(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Locality*, UPB_SIZE(36, 72)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_build_version(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_user_agent_name(const envoy_api_v2_core_Node *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE bool envoy_api_v2_core_Node_has_user_agent_version(const envoy_api_v2_core_Node *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE upb_strview envoy_api_v2_core_Node_user_agent_version(const envoy_api_v2_core_Node *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(48, 96), UPB_SIZE(56, 112), 7, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_Node_has_user_agent_build_version(const envoy_api_v2_core_Node *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 8); }
+UPB_INLINE const envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Node_user_agent_build_version(const envoy_api_v2_core_Node *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_BuildVersion*, UPB_SIZE(48, 96), UPB_SIZE(56, 112), 8, NULL); }
+UPB_INLINE const envoy_api_v2_core_Extension* const* envoy_api_v2_core_Node_extensions(const envoy_api_v2_core_Node *msg, size_t *len) { return (const envoy_api_v2_core_Extension* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_Node_client_features(const envoy_api_v2_core_Node *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+
+UPB_INLINE void envoy_api_v2_core_Node_set_id(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_cluster(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_metadata(envoy_api_v2_core_Node *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_Node_mutable_metadata(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_Node_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_locality(envoy_api_v2_core_Node *msg, envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Locality*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_core_Node_mutable_locality(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_core_Node_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_build_version(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_name(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_version(envoy_api_v2_core_Node *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(48, 96), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE void envoy_api_v2_core_Node_set_user_agent_build_version(envoy_api_v2_core_Node *msg, envoy_api_v2_core_BuildVersion* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_BuildVersion*, UPB_SIZE(48, 96), value, UPB_SIZE(56, 112), 8);
+}
+UPB_INLINE struct envoy_api_v2_core_BuildVersion* envoy_api_v2_core_Node_mutable_user_agent_build_version(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_BuildVersion* sub = (struct envoy_api_v2_core_BuildVersion*)envoy_api_v2_core_Node_user_agent_build_version(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_BuildVersion*)upb_msg_new(&envoy_api_v2_core_BuildVersion_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Node_set_user_agent_build_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_Extension** envoy_api_v2_core_Node_mutable_extensions(envoy_api_v2_core_Node *msg, size_t *len) {
+  return (envoy_api_v2_core_Extension**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE envoy_api_v2_core_Extension** envoy_api_v2_core_Node_resize_extensions(envoy_api_v2_core_Node *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_Extension**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Extension* envoy_api_v2_core_Node_add_extensions(envoy_api_v2_core_Node *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Extension* sub = (struct envoy_api_v2_core_Extension*)upb_msg_new(&envoy_api_v2_core_Extension_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_Node_mutable_client_features(envoy_api_v2_core_Node *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_Node_resize_client_features(envoy_api_v2_core_Node *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_Node_add_client_features(envoy_api_v2_core_Node *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.core.Metadata */
+
+UPB_INLINE envoy_api_v2_core_Metadata *envoy_api_v2_core_Metadata_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata *)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Metadata *envoy_api_v2_core_Metadata_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Metadata *ret = envoy_api_v2_core_Metadata_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Metadata_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Metadata_serialize(const envoy_api_v2_core_Metadata *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Metadata_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_Metadata_FilterMetadataEntry* const* envoy_api_v2_core_Metadata_filter_metadata(const envoy_api_v2_core_Metadata *msg, size_t *len) { return (const envoy_api_v2_core_Metadata_FilterMetadataEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry** envoy_api_v2_core_Metadata_mutable_filter_metadata(envoy_api_v2_core_Metadata *msg, size_t *len) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry** envoy_api_v2_core_Metadata_resize_filter_metadata(envoy_api_v2_core_Metadata *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata_FilterMetadataEntry* envoy_api_v2_core_Metadata_add_filter_metadata(envoy_api_v2_core_Metadata *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata_FilterMetadataEntry* sub = (struct envoy_api_v2_core_Metadata_FilterMetadataEntry*)upb_msg_new(&envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.Metadata.FilterMetadataEntry */
+
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry *envoy_api_v2_core_Metadata_FilterMetadataEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Metadata_FilterMetadataEntry *)upb_msg_new(&envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Metadata_FilterMetadataEntry *envoy_api_v2_core_Metadata_FilterMetadataEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Metadata_FilterMetadataEntry *ret = envoy_api_v2_core_Metadata_FilterMetadataEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Metadata_FilterMetadataEntry_serialize(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Metadata_FilterMetadataEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_Metadata_FilterMetadataEntry_key(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_Metadata_FilterMetadataEntry_value(const envoy_api_v2_core_Metadata_FilterMetadataEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_Metadata_FilterMetadataEntry_set_key(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Metadata_FilterMetadataEntry_set_value(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_Metadata_FilterMetadataEntry_mutable_value(envoy_api_v2_core_Metadata_FilterMetadataEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_Metadata_FilterMetadataEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Metadata_FilterMetadataEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.RuntimeUInt32 */
+
+UPB_INLINE envoy_api_v2_core_RuntimeUInt32 *envoy_api_v2_core_RuntimeUInt32_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeUInt32 *)upb_msg_new(&envoy_api_v2_core_RuntimeUInt32_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeUInt32 *envoy_api_v2_core_RuntimeUInt32_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeUInt32 *ret = envoy_api_v2_core_RuntimeUInt32_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeUInt32_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeUInt32_serialize(const envoy_api_v2_core_RuntimeUInt32 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeUInt32_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_core_RuntimeUInt32_default_value(const envoy_api_v2_core_RuntimeUInt32 *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeUInt32_runtime_key(const envoy_api_v2_core_RuntimeUInt32 *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeUInt32_set_default_value(envoy_api_v2_core_RuntimeUInt32 *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeUInt32_set_runtime_key(envoy_api_v2_core_RuntimeUInt32 *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+
+/* envoy.api.v2.core.RuntimeFeatureFlag */
+
+UPB_INLINE envoy_api_v2_core_RuntimeFeatureFlag *envoy_api_v2_core_RuntimeFeatureFlag_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeFeatureFlag *)upb_msg_new(&envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeFeatureFlag *envoy_api_v2_core_RuntimeFeatureFlag_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeFeatureFlag *ret = envoy_api_v2_core_RuntimeFeatureFlag_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeFeatureFlag_serialize(const envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeFeatureFlag_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_RuntimeFeatureFlag_default_value(const envoy_api_v2_core_RuntimeFeatureFlag *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeFeatureFlag_runtime_key(const envoy_api_v2_core_RuntimeFeatureFlag *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeFeatureFlag_set_default_value(envoy_api_v2_core_RuntimeFeatureFlag *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_RuntimeFeatureFlag_mutable_default_value(envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_RuntimeFeatureFlag_default_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RuntimeFeatureFlag_set_default_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeFeatureFlag_set_runtime_key(envoy_api_v2_core_RuntimeFeatureFlag *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.HeaderValue */
+
+UPB_INLINE envoy_api_v2_core_HeaderValue *envoy_api_v2_core_HeaderValue_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValue *)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValue *envoy_api_v2_core_HeaderValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderValue *ret = envoy_api_v2_core_HeaderValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderValue_serialize(const envoy_api_v2_core_HeaderValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HeaderValue_key(const envoy_api_v2_core_HeaderValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HeaderValue_value(const envoy_api_v2_core_HeaderValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HeaderValue_set_key(envoy_api_v2_core_HeaderValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HeaderValue_set_value(envoy_api_v2_core_HeaderValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.HeaderValueOption */
+
+UPB_INLINE envoy_api_v2_core_HeaderValueOption *envoy_api_v2_core_HeaderValueOption_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValueOption *)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValueOption *envoy_api_v2_core_HeaderValueOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderValueOption *ret = envoy_api_v2_core_HeaderValueOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderValueOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderValueOption_serialize(const envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderValueOption_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderValueOption_header(const envoy_api_v2_core_HeaderValueOption *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HeaderValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_HeaderValueOption_append(const envoy_api_v2_core_HeaderValueOption *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_HeaderValueOption_set_header(envoy_api_v2_core_HeaderValueOption *msg, envoy_api_v2_core_HeaderValue* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HeaderValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderValueOption_mutable_header(envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)envoy_api_v2_core_HeaderValueOption_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HeaderValueOption_set_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HeaderValueOption_set_append(envoy_api_v2_core_HeaderValueOption *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_HeaderValueOption_mutable_append(envoy_api_v2_core_HeaderValueOption *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_HeaderValueOption_append(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HeaderValueOption_set_append(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HeaderMap */
+
+UPB_INLINE envoy_api_v2_core_HeaderMap *envoy_api_v2_core_HeaderMap_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderMap *)upb_msg_new(&envoy_api_v2_core_HeaderMap_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HeaderMap *envoy_api_v2_core_HeaderMap_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HeaderMap *ret = envoy_api_v2_core_HeaderMap_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HeaderMap_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HeaderMap_serialize(const envoy_api_v2_core_HeaderMap *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HeaderMap_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HeaderValue* const* envoy_api_v2_core_HeaderMap_headers(const envoy_api_v2_core_HeaderMap *msg, size_t *len) { return (const envoy_api_v2_core_HeaderValue* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_core_HeaderValue** envoy_api_v2_core_HeaderMap_mutable_headers(envoy_api_v2_core_HeaderMap *msg, size_t *len) {
+  return (envoy_api_v2_core_HeaderValue**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_core_HeaderValue** envoy_api_v2_core_HeaderMap_resize_headers(envoy_api_v2_core_HeaderMap *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_HeaderValue**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_HeaderMap_add_headers(envoy_api_v2_core_HeaderMap *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.DataSource */
+
+UPB_INLINE envoy_api_v2_core_DataSource *envoy_api_v2_core_DataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_DataSource *)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_DataSource *envoy_api_v2_core_DataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_DataSource *ret = envoy_api_v2_core_DataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_DataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_DataSource_serialize(const envoy_api_v2_core_DataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_DataSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_DataSource_specifier_filename = 1,
+  envoy_api_v2_core_DataSource_specifier_inline_bytes = 2,
+  envoy_api_v2_core_DataSource_specifier_inline_string = 3,
+  envoy_api_v2_core_DataSource_specifier_NOT_SET = 0
+} envoy_api_v2_core_DataSource_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_DataSource_specifier_oneofcases envoy_api_v2_core_DataSource_specifier_case(const envoy_api_v2_core_DataSource* msg) { return (envoy_api_v2_core_DataSource_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_filename(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_filename(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_inline_bytes(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_inline_bytes(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_DataSource_has_inline_string(const envoy_api_v2_core_DataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview envoy_api_v2_core_DataSource_inline_string(const envoy_api_v2_core_DataSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_core_DataSource_set_filename(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_DataSource_set_inline_bytes(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE void envoy_api_v2_core_DataSource_set_inline_string(envoy_api_v2_core_DataSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+
+/* envoy.api.v2.core.RemoteDataSource */
+
+UPB_INLINE envoy_api_v2_core_RemoteDataSource *envoy_api_v2_core_RemoteDataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RemoteDataSource *)upb_msg_new(&envoy_api_v2_core_RemoteDataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RemoteDataSource *envoy_api_v2_core_RemoteDataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RemoteDataSource *ret = envoy_api_v2_core_RemoteDataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RemoteDataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RemoteDataSource_serialize(const envoy_api_v2_core_RemoteDataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RemoteDataSource_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_HttpUri* envoy_api_v2_core_RemoteDataSource_http_uri(const envoy_api_v2_core_RemoteDataSource *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpUri*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RemoteDataSource_sha256(const envoy_api_v2_core_RemoteDataSource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RemoteDataSource_set_http_uri(envoy_api_v2_core_RemoteDataSource *msg, struct envoy_api_v2_core_HttpUri* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpUri*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpUri* envoy_api_v2_core_RemoteDataSource_mutable_http_uri(envoy_api_v2_core_RemoteDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpUri* sub = (struct envoy_api_v2_core_HttpUri*)envoy_api_v2_core_RemoteDataSource_http_uri(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpUri*)upb_msg_new(&envoy_api_v2_core_HttpUri_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RemoteDataSource_set_http_uri(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RemoteDataSource_set_sha256(envoy_api_v2_core_RemoteDataSource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.AsyncDataSource */
+
+UPB_INLINE envoy_api_v2_core_AsyncDataSource *envoy_api_v2_core_AsyncDataSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_AsyncDataSource *)upb_msg_new(&envoy_api_v2_core_AsyncDataSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_AsyncDataSource *envoy_api_v2_core_AsyncDataSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_AsyncDataSource *ret = envoy_api_v2_core_AsyncDataSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_AsyncDataSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_AsyncDataSource_serialize(const envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_AsyncDataSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_AsyncDataSource_specifier_local = 1,
+  envoy_api_v2_core_AsyncDataSource_specifier_remote = 2,
+  envoy_api_v2_core_AsyncDataSource_specifier_NOT_SET = 0
+} envoy_api_v2_core_AsyncDataSource_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_AsyncDataSource_specifier_oneofcases envoy_api_v2_core_AsyncDataSource_specifier_case(const envoy_api_v2_core_AsyncDataSource* msg) { return (envoy_api_v2_core_AsyncDataSource_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_AsyncDataSource_has_local(const envoy_api_v2_core_AsyncDataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_DataSource* envoy_api_v2_core_AsyncDataSource_local(const envoy_api_v2_core_AsyncDataSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_AsyncDataSource_has_remote(const envoy_api_v2_core_AsyncDataSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_core_RemoteDataSource* envoy_api_v2_core_AsyncDataSource_remote(const envoy_api_v2_core_AsyncDataSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_RemoteDataSource*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_AsyncDataSource_set_local(envoy_api_v2_core_AsyncDataSource *msg, envoy_api_v2_core_DataSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_AsyncDataSource_mutable_local(envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_AsyncDataSource_local(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_AsyncDataSource_set_local(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_AsyncDataSource_set_remote(envoy_api_v2_core_AsyncDataSource *msg, envoy_api_v2_core_RemoteDataSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_RemoteDataSource*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_RemoteDataSource* envoy_api_v2_core_AsyncDataSource_mutable_remote(envoy_api_v2_core_AsyncDataSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RemoteDataSource* sub = (struct envoy_api_v2_core_RemoteDataSource*)envoy_api_v2_core_AsyncDataSource_remote(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RemoteDataSource*)upb_msg_new(&envoy_api_v2_core_RemoteDataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_AsyncDataSource_set_remote(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.TransportSocket */
+
+UPB_INLINE envoy_api_v2_core_TransportSocket *envoy_api_v2_core_TransportSocket_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TransportSocket *)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TransportSocket *envoy_api_v2_core_TransportSocket_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TransportSocket *ret = envoy_api_v2_core_TransportSocket_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TransportSocket_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TransportSocket_serialize(const envoy_api_v2_core_TransportSocket *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TransportSocket_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_TransportSocket_config_type_config = 2,
+  envoy_api_v2_core_TransportSocket_config_type_typed_config = 3,
+  envoy_api_v2_core_TransportSocket_config_type_NOT_SET = 0
+} envoy_api_v2_core_TransportSocket_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_TransportSocket_config_type_oneofcases envoy_api_v2_core_TransportSocket_config_type_case(const envoy_api_v2_core_TransportSocket* msg) { return (envoy_api_v2_core_TransportSocket_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_TransportSocket_name(const envoy_api_v2_core_TransportSocket *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_TransportSocket_has_config(const envoy_api_v2_core_TransportSocket *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_TransportSocket_config(const envoy_api_v2_core_TransportSocket *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_TransportSocket_has_typed_config(const envoy_api_v2_core_TransportSocket *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_TransportSocket_typed_config(const envoy_api_v2_core_TransportSocket *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_name(envoy_api_v2_core_TransportSocket *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_config(envoy_api_v2_core_TransportSocket *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_TransportSocket_mutable_config(envoy_api_v2_core_TransportSocket *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_TransportSocket_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TransportSocket_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_TransportSocket_set_typed_config(envoy_api_v2_core_TransportSocket *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_TransportSocket_mutable_typed_config(envoy_api_v2_core_TransportSocket *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_TransportSocket_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_TransportSocket_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.SocketOption */
+
+UPB_INLINE envoy_api_v2_core_SocketOption *envoy_api_v2_core_SocketOption_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SocketOption *)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SocketOption *envoy_api_v2_core_SocketOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SocketOption *ret = envoy_api_v2_core_SocketOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SocketOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SocketOption_serialize(const envoy_api_v2_core_SocketOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SocketOption_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_SocketOption_value_int_value = 4,
+  envoy_api_v2_core_SocketOption_value_buf_value = 5,
+  envoy_api_v2_core_SocketOption_value_NOT_SET = 0
+} envoy_api_v2_core_SocketOption_value_oneofcases;
+UPB_INLINE envoy_api_v2_core_SocketOption_value_oneofcases envoy_api_v2_core_SocketOption_value_case(const envoy_api_v2_core_SocketOption* msg) { return (envoy_api_v2_core_SocketOption_value_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(40, 56)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_SocketOption_description(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_level(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_name(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_core_SocketOption_has_int_value(const envoy_api_v2_core_SocketOption *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(40, 56), 4); }
+UPB_INLINE int64_t envoy_api_v2_core_SocketOption_int_value(const envoy_api_v2_core_SocketOption *msg) { return UPB_READ_ONEOF(msg, int64_t, UPB_SIZE(32, 40), UPB_SIZE(40, 56), 4, 0); }
+UPB_INLINE bool envoy_api_v2_core_SocketOption_has_buf_value(const envoy_api_v2_core_SocketOption *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(40, 56), 5); }
+UPB_INLINE upb_strview envoy_api_v2_core_SocketOption_buf_value(const envoy_api_v2_core_SocketOption *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(32, 40), UPB_SIZE(40, 56), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE int32_t envoy_api_v2_core_SocketOption_state(const envoy_api_v2_core_SocketOption *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_description(envoy_api_v2_core_SocketOption *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_level(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_name(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_int_value(envoy_api_v2_core_SocketOption *msg, int64_t value) {
+  UPB_WRITE_ONEOF(msg, int64_t, UPB_SIZE(32, 40), value, UPB_SIZE(40, 56), 4);
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_buf_value(envoy_api_v2_core_SocketOption *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(32, 40), value, UPB_SIZE(40, 56), 5);
+}
+UPB_INLINE void envoy_api_v2_core_SocketOption_set_state(envoy_api_v2_core_SocketOption *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+
+/* envoy.api.v2.core.RuntimeFractionalPercent */
+
+UPB_INLINE envoy_api_v2_core_RuntimeFractionalPercent *envoy_api_v2_core_RuntimeFractionalPercent_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RuntimeFractionalPercent *)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RuntimeFractionalPercent *envoy_api_v2_core_RuntimeFractionalPercent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RuntimeFractionalPercent *ret = envoy_api_v2_core_RuntimeFractionalPercent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RuntimeFractionalPercent_serialize(const envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_core_RuntimeFractionalPercent_default_value(const envoy_api_v2_core_RuntimeFractionalPercent *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_RuntimeFractionalPercent_runtime_key(const envoy_api_v2_core_RuntimeFractionalPercent *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_RuntimeFractionalPercent_set_default_value(envoy_api_v2_core_RuntimeFractionalPercent *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_core_RuntimeFractionalPercent_mutable_default_value(envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_core_RuntimeFractionalPercent_default_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RuntimeFractionalPercent_set_default_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RuntimeFractionalPercent_set_runtime_key(envoy_api_v2_core_RuntimeFractionalPercent *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.ControlPlane */
+
+UPB_INLINE envoy_api_v2_core_ControlPlane *envoy_api_v2_core_ControlPlane_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ControlPlane *)upb_msg_new(&envoy_api_v2_core_ControlPlane_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ControlPlane *envoy_api_v2_core_ControlPlane_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ControlPlane *ret = envoy_api_v2_core_ControlPlane_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ControlPlane_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ControlPlane_serialize(const envoy_api_v2_core_ControlPlane *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ControlPlane_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_ControlPlane_identifier(const envoy_api_v2_core_ControlPlane *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_ControlPlane_set_identifier(envoy_api_v2_core_ControlPlane *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_BASE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.c
new file mode 100644
index 0000000..a6d87b8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.c	
@@ -0,0 +1,135 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/config_source.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h"
+#else
+  #include  "envoy/api/v2/core/grpc_service.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_core_ApiConfigSource_submsgs[4] = {
+  &envoy_api_v2_core_GrpcService_msginit,
+  &envoy_api_v2_core_RateLimitSettings_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_ApiConfigSource__fields[8] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(32, 48), 0, 0, 9, 3},
+  {3, UPB_SIZE(20, 24), 0, 2, 11, 1},
+  {4, UPB_SIZE(36, 56), 0, 0, 11, 3},
+  {5, UPB_SIZE(24, 32), 0, 2, 11, 1},
+  {6, UPB_SIZE(28, 40), 0, 1, 11, 1},
+  {7, UPB_SIZE(16, 16), 0, 0, 8, 1},
+  {8, UPB_SIZE(8, 8), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_ApiConfigSource_msginit = {
+  &envoy_api_v2_core_ApiConfigSource_submsgs[0],
+  &envoy_api_v2_core_ApiConfigSource__fields[0],
+  UPB_SIZE(40, 64), 8, false,
+};
+
+const upb_msglayout envoy_api_v2_core_AggregatedConfigSource_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_api_v2_core_SelfConfigSource_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_RateLimitSettings_submsgs[2] = {
+  &google_protobuf_DoubleValue_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_RateLimitSettings__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 1, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_RateLimitSettings_msginit = {
+  &envoy_api_v2_core_RateLimitSettings_submsgs[0],
+  &envoy_api_v2_core_RateLimitSettings__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_ConfigSource_submsgs[4] = {
+  &envoy_api_v2_core_AggregatedConfigSource_msginit,
+  &envoy_api_v2_core_ApiConfigSource_msginit,
+  &envoy_api_v2_core_SelfConfigSource_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_ConfigSource__fields[6] = {
+  {1, UPB_SIZE(12, 16), UPB_SIZE(-21, -33), 0, 9, 1},
+  {2, UPB_SIZE(12, 16), UPB_SIZE(-21, -33), 1, 11, 1},
+  {3, UPB_SIZE(12, 16), UPB_SIZE(-21, -33), 0, 11, 1},
+  {4, UPB_SIZE(8, 8), 0, 3, 11, 1},
+  {5, UPB_SIZE(12, 16), UPB_SIZE(-21, -33), 2, 11, 1},
+  {6, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_ConfigSource_msginit = {
+  &envoy_api_v2_core_ConfigSource_submsgs[0],
+  &envoy_api_v2_core_ConfigSource__fields[0],
+  UPB_SIZE(24, 48), 6, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h
new file mode 100644
index 0000000..89b4b9a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h	
@@ -0,0 +1,346 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/config_source.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_ApiConfigSource;
+struct envoy_api_v2_core_AggregatedConfigSource;
+struct envoy_api_v2_core_SelfConfigSource;
+struct envoy_api_v2_core_RateLimitSettings;
+struct envoy_api_v2_core_ConfigSource;
+typedef struct envoy_api_v2_core_ApiConfigSource envoy_api_v2_core_ApiConfigSource;
+typedef struct envoy_api_v2_core_AggregatedConfigSource envoy_api_v2_core_AggregatedConfigSource;
+typedef struct envoy_api_v2_core_SelfConfigSource envoy_api_v2_core_SelfConfigSource;
+typedef struct envoy_api_v2_core_RateLimitSettings envoy_api_v2_core_RateLimitSettings;
+typedef struct envoy_api_v2_core_ConfigSource envoy_api_v2_core_ConfigSource;
+extern const upb_msglayout envoy_api_v2_core_ApiConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_AggregatedConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_SelfConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_RateLimitSettings_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+struct envoy_api_v2_core_GrpcService;
+struct google_protobuf_DoubleValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_msginit;
+extern const upb_msglayout google_protobuf_DoubleValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_ApiConfigSource_UNSUPPORTED_REST_LEGACY = 0,
+  envoy_api_v2_core_ApiConfigSource_REST = 1,
+  envoy_api_v2_core_ApiConfigSource_GRPC = 2,
+  envoy_api_v2_core_ApiConfigSource_DELTA_GRPC = 3
+} envoy_api_v2_core_ApiConfigSource_ApiType;
+
+typedef enum {
+  envoy_api_v2_core_AUTO = 0,
+  envoy_api_v2_core_V2 = 1,
+  envoy_api_v2_core_V3 = 2
+} envoy_api_v2_core_ApiVersion;
+
+
+/* envoy.api.v2.core.ApiConfigSource */
+
+UPB_INLINE envoy_api_v2_core_ApiConfigSource *envoy_api_v2_core_ApiConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ApiConfigSource *)upb_msg_new(&envoy_api_v2_core_ApiConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ApiConfigSource *envoy_api_v2_core_ApiConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ApiConfigSource *ret = envoy_api_v2_core_ApiConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ApiConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ApiConfigSource_serialize(const envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ApiConfigSource_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_api_v2_core_ApiConfigSource_api_type(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_ApiConfigSource_cluster_names(const envoy_api_v2_core_ApiConfigSource *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 48), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_refresh_delay(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_GrpcService* const* envoy_api_v2_core_ApiConfigSource_grpc_services(const envoy_api_v2_core_ApiConfigSource *msg, size_t *len) { return (const struct envoy_api_v2_core_GrpcService* const*)_upb_array_accessor(msg, UPB_SIZE(36, 56), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_request_timeout(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 32)); }
+UPB_INLINE const envoy_api_v2_core_RateLimitSettings* envoy_api_v2_core_ApiConfigSource_rate_limit_settings(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_RateLimitSettings*, UPB_SIZE(28, 40)); }
+UPB_INLINE bool envoy_api_v2_core_ApiConfigSource_set_node_on_first_message_only(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE int32_t envoy_api_v2_core_ApiConfigSource_transport_api_version(const envoy_api_v2_core_ApiConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_api_type(envoy_api_v2_core_ApiConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_ApiConfigSource_mutable_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_ApiConfigSource_resize_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_ApiConfigSource_add_cluster_names(envoy_api_v2_core_ApiConfigSource *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_refresh_delay(envoy_api_v2_core_ApiConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_mutable_refresh_delay(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ApiConfigSource_refresh_delay(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_refresh_delay(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService** envoy_api_v2_core_ApiConfigSource_mutable_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, size_t *len) {
+  return (struct envoy_api_v2_core_GrpcService**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService** envoy_api_v2_core_ApiConfigSource_resize_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_GrpcService**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService* envoy_api_v2_core_ApiConfigSource_add_grpc_services(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService* sub = (struct envoy_api_v2_core_GrpcService*)upb_msg_new(&envoy_api_v2_core_GrpcService_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_request_timeout(envoy_api_v2_core_ApiConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ApiConfigSource_mutable_request_timeout(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ApiConfigSource_request_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_request_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_rate_limit_settings(envoy_api_v2_core_ApiConfigSource *msg, envoy_api_v2_core_RateLimitSettings* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_RateLimitSettings*, UPB_SIZE(28, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RateLimitSettings* envoy_api_v2_core_ApiConfigSource_mutable_rate_limit_settings(envoy_api_v2_core_ApiConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RateLimitSettings* sub = (struct envoy_api_v2_core_RateLimitSettings*)envoy_api_v2_core_ApiConfigSource_rate_limit_settings(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RateLimitSettings*)upb_msg_new(&envoy_api_v2_core_RateLimitSettings_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ApiConfigSource_set_rate_limit_settings(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_set_node_on_first_message_only(envoy_api_v2_core_ApiConfigSource *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_ApiConfigSource_set_transport_api_version(envoy_api_v2_core_ApiConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.core.AggregatedConfigSource */
+
+UPB_INLINE envoy_api_v2_core_AggregatedConfigSource *envoy_api_v2_core_AggregatedConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_AggregatedConfigSource *)upb_msg_new(&envoy_api_v2_core_AggregatedConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_AggregatedConfigSource *envoy_api_v2_core_AggregatedConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_AggregatedConfigSource *ret = envoy_api_v2_core_AggregatedConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_AggregatedConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_AggregatedConfigSource_serialize(const envoy_api_v2_core_AggregatedConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_AggregatedConfigSource_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.SelfConfigSource */
+
+UPB_INLINE envoy_api_v2_core_SelfConfigSource *envoy_api_v2_core_SelfConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_SelfConfigSource *)upb_msg_new(&envoy_api_v2_core_SelfConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_SelfConfigSource *envoy_api_v2_core_SelfConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_SelfConfigSource *ret = envoy_api_v2_core_SelfConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_SelfConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_SelfConfigSource_serialize(const envoy_api_v2_core_SelfConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_SelfConfigSource_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.RateLimitSettings */
+
+UPB_INLINE envoy_api_v2_core_RateLimitSettings *envoy_api_v2_core_RateLimitSettings_new(upb_arena *arena) {
+  return (envoy_api_v2_core_RateLimitSettings *)upb_msg_new(&envoy_api_v2_core_RateLimitSettings_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_RateLimitSettings *envoy_api_v2_core_RateLimitSettings_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_RateLimitSettings *ret = envoy_api_v2_core_RateLimitSettings_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_RateLimitSettings_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_RateLimitSettings_serialize(const envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_RateLimitSettings_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_RateLimitSettings_max_tokens(const envoy_api_v2_core_RateLimitSettings *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_DoubleValue* envoy_api_v2_core_RateLimitSettings_fill_rate(const envoy_api_v2_core_RateLimitSettings *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_DoubleValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_core_RateLimitSettings_set_max_tokens(envoy_api_v2_core_RateLimitSettings *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_RateLimitSettings_mutable_max_tokens(envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_RateLimitSettings_max_tokens(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RateLimitSettings_set_max_tokens(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_RateLimitSettings_set_fill_rate(envoy_api_v2_core_RateLimitSettings *msg, struct google_protobuf_DoubleValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_DoubleValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_DoubleValue* envoy_api_v2_core_RateLimitSettings_mutable_fill_rate(envoy_api_v2_core_RateLimitSettings *msg, upb_arena *arena) {
+  struct google_protobuf_DoubleValue* sub = (struct google_protobuf_DoubleValue*)envoy_api_v2_core_RateLimitSettings_fill_rate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_DoubleValue*)upb_msg_new(&google_protobuf_DoubleValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_RateLimitSettings_set_fill_rate(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.ConfigSource */
+
+UPB_INLINE envoy_api_v2_core_ConfigSource *envoy_api_v2_core_ConfigSource_new(upb_arena *arena) {
+  return (envoy_api_v2_core_ConfigSource *)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_ConfigSource *envoy_api_v2_core_ConfigSource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_ConfigSource *ret = envoy_api_v2_core_ConfigSource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_ConfigSource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_ConfigSource_serialize(const envoy_api_v2_core_ConfigSource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_ConfigSource_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_ConfigSource_config_source_specifier_path = 1,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_api_config_source = 2,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_ads = 3,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_self = 5,
+  envoy_api_v2_core_ConfigSource_config_source_specifier_NOT_SET = 0
+} envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases envoy_api_v2_core_ConfigSource_config_source_specifier_case(const envoy_api_v2_core_ConfigSource* msg) { return (envoy_api_v2_core_ConfigSource_config_source_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 32)); }
+
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_path(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_ConfigSource_path(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_api_config_source(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 2); }
+UPB_INLINE const envoy_api_v2_core_ApiConfigSource* envoy_api_v2_core_ConfigSource_api_config_source(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_ApiConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_ads(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 3); }
+UPB_INLINE const envoy_api_v2_core_AggregatedConfigSource* envoy_api_v2_core_ConfigSource_ads(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_AggregatedConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 3, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_ConfigSource_initial_fetch_timeout(const envoy_api_v2_core_ConfigSource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_core_ConfigSource_has_self(const envoy_api_v2_core_ConfigSource *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 32), 5); }
+UPB_INLINE const envoy_api_v2_core_SelfConfigSource* envoy_api_v2_core_ConfigSource_self(const envoy_api_v2_core_ConfigSource *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_SelfConfigSource*, UPB_SIZE(12, 16), UPB_SIZE(20, 32), 5, NULL); }
+UPB_INLINE int32_t envoy_api_v2_core_ConfigSource_resource_api_version(const envoy_api_v2_core_ConfigSource *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_path(envoy_api_v2_core_ConfigSource *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 1);
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_api_config_source(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_ApiConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_ApiConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_ApiConfigSource* envoy_api_v2_core_ConfigSource_mutable_api_config_source(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ApiConfigSource* sub = (struct envoy_api_v2_core_ApiConfigSource*)envoy_api_v2_core_ConfigSource_api_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ApiConfigSource*)upb_msg_new(&envoy_api_v2_core_ApiConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_api_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_ads(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_AggregatedConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_AggregatedConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 3);
+}
+UPB_INLINE struct envoy_api_v2_core_AggregatedConfigSource* envoy_api_v2_core_ConfigSource_mutable_ads(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_AggregatedConfigSource* sub = (struct envoy_api_v2_core_AggregatedConfigSource*)envoy_api_v2_core_ConfigSource_ads(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_AggregatedConfigSource*)upb_msg_new(&envoy_api_v2_core_AggregatedConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_ads(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_initial_fetch_timeout(envoy_api_v2_core_ConfigSource *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_ConfigSource_mutable_initial_fetch_timeout(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_ConfigSource_initial_fetch_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_initial_fetch_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_self(envoy_api_v2_core_ConfigSource *msg, envoy_api_v2_core_SelfConfigSource* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_SelfConfigSource*, UPB_SIZE(12, 16), value, UPB_SIZE(20, 32), 5);
+}
+UPB_INLINE struct envoy_api_v2_core_SelfConfigSource* envoy_api_v2_core_ConfigSource_mutable_self(envoy_api_v2_core_ConfigSource *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SelfConfigSource* sub = (struct envoy_api_v2_core_SelfConfigSource*)envoy_api_v2_core_ConfigSource_self(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_SelfConfigSource*)upb_msg_new(&envoy_api_v2_core_SelfConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_ConfigSource_set_self(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_ConfigSource_set_resource_api_version(envoy_api_v2_core_ConfigSource *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_CONFIG_SOURCE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.c
new file mode 100644
index 0000000..a8759cb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.c	
@@ -0,0 +1,244 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/grpc_service.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h"
+#else
+  #include  "envoy/api/v2/core/grpc_service.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/empty.upb.h"
+#else
+  #include  "google/protobuf/empty.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h"
+#else
+  #include  "udpa/annotations/sensitive.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_submsgs[4] = {
+  &envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_msginit,
+  &envoy_api_v2_core_HeaderValue_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService__fields[4] = {
+  {1, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 3, 11, 1},
+  {5, UPB_SIZE(4, 8), 0, 2, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_msginit = {
+  &envoy_api_v2_core_GrpcService_submsgs[0],
+  &envoy_api_v2_core_GrpcService__fields[0],
+  UPB_SIZE(16, 32), 4, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_EnvoyGrpc__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit = {
+  NULL,
+  &envoy_api_v2_core_GrpcService_EnvoyGrpc__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_GoogleGrpc_submsgs[3] = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc__fields[6] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(24, 48), 0, 1, 11, 1},
+  {3, UPB_SIZE(32, 64), 0, 0, 11, 3},
+  {4, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {6, UPB_SIZE(28, 56), 0, 2, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_msginit = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_submsgs[0],
+  &envoy_api_v2_core_GrpcService_GoogleGrpc__fields[0],
+  UPB_SIZE(40, 80), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_submsgs[3] = {
+  &envoy_api_v2_core_DataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_submsgs[0],
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_submsgs[3] = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit,
+  &google_protobuf_Empty_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials__fields[3] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_submsgs[0],
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials__fields[0],
+  UPB_SIZE(8, 16), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_submsgs[5] = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit,
+  &google_protobuf_Empty_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials__fields[7] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 4, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 2, 11, 1},
+  {5, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 11, 1},
+  {6, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 1, 11, 1},
+  {7, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 3, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_submsgs[0],
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials__fields[0],
+  UPB_SIZE(16, 32), 7, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 4, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit = {
+  NULL,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit = {
+  NULL,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit = {
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_submsgs[0],
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService__fields[9] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {4, UPB_SIZE(24, 48), 0, 0, 9, 1},
+  {5, UPB_SIZE(32, 64), 0, 0, 9, 1},
+  {6, UPB_SIZE(40, 80), 0, 0, 9, 1},
+  {7, UPB_SIZE(48, 96), 0, 0, 9, 1},
+  {8, UPB_SIZE(56, 112), 0, 0, 9, 1},
+  {9, UPB_SIZE(64, 128), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit = {
+  NULL,
+  &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService__fields[0],
+  UPB_SIZE(72, 144), 9, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h
new file mode 100644
index 0000000..c4e1a4b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/grpc_service.upb.h	
@@ -0,0 +1,666 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/grpc_service.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_GrpcService;
+struct envoy_api_v2_core_GrpcService_EnvoyGrpc;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin;
+struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService;
+typedef struct envoy_api_v2_core_GrpcService envoy_api_v2_core_GrpcService;
+typedef struct envoy_api_v2_core_GrpcService_EnvoyGrpc envoy_api_v2_core_GrpcService_EnvoyGrpc;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc envoy_api_v2_core_GrpcService_GoogleGrpc;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin;
+typedef struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_HeaderValue;
+struct google_protobuf_Any;
+struct google_protobuf_Duration;
+struct google_protobuf_Empty;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValue_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Empty_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.core.GrpcService */
+
+UPB_INLINE envoy_api_v2_core_GrpcService *envoy_api_v2_core_GrpcService_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService *)upb_msg_new(&envoy_api_v2_core_GrpcService_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService *envoy_api_v2_core_GrpcService_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService *ret = envoy_api_v2_core_GrpcService_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_serialize(const envoy_api_v2_core_GrpcService *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_target_specifier_envoy_grpc = 1,
+  envoy_api_v2_core_GrpcService_target_specifier_google_grpc = 2,
+  envoy_api_v2_core_GrpcService_target_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_target_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_target_specifier_oneofcases envoy_api_v2_core_GrpcService_target_specifier_case(const envoy_api_v2_core_GrpcService* msg) { return (envoy_api_v2_core_GrpcService_target_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_has_envoy_grpc(const envoy_api_v2_core_GrpcService *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_EnvoyGrpc* envoy_api_v2_core_GrpcService_envoy_grpc(const envoy_api_v2_core_GrpcService *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_EnvoyGrpc*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_has_google_grpc(const envoy_api_v2_core_GrpcService *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc* envoy_api_v2_core_GrpcService_google_grpc(const envoy_api_v2_core_GrpcService *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_GrpcService_timeout(const envoy_api_v2_core_GrpcService *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValue* const* envoy_api_v2_core_GrpcService_initial_metadata(const envoy_api_v2_core_GrpcService *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValue* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_envoy_grpc(envoy_api_v2_core_GrpcService *msg, envoy_api_v2_core_GrpcService_EnvoyGrpc* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_EnvoyGrpc*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_EnvoyGrpc* envoy_api_v2_core_GrpcService_mutable_envoy_grpc(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_EnvoyGrpc* sub = (struct envoy_api_v2_core_GrpcService_EnvoyGrpc*)envoy_api_v2_core_GrpcService_envoy_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_EnvoyGrpc*)upb_msg_new(&envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_envoy_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_google_grpc(envoy_api_v2_core_GrpcService *msg, envoy_api_v2_core_GrpcService_GoogleGrpc* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc* envoy_api_v2_core_GrpcService_mutable_google_grpc(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc*)envoy_api_v2_core_GrpcService_google_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_google_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_set_timeout(envoy_api_v2_core_GrpcService *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_GrpcService_mutable_timeout(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_GrpcService_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue** envoy_api_v2_core_GrpcService_mutable_initial_metadata(envoy_api_v2_core_GrpcService *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValue**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue** envoy_api_v2_core_GrpcService_resize_initial_metadata(envoy_api_v2_core_GrpcService *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValue**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValue* envoy_api_v2_core_GrpcService_add_initial_metadata(envoy_api_v2_core_GrpcService *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValue* sub = (struct envoy_api_v2_core_HeaderValue*)upb_msg_new(&envoy_api_v2_core_HeaderValue_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.EnvoyGrpc */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_EnvoyGrpc *envoy_api_v2_core_GrpcService_EnvoyGrpc_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_EnvoyGrpc *)upb_msg_new(&envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_EnvoyGrpc *envoy_api_v2_core_GrpcService_EnvoyGrpc_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_EnvoyGrpc *ret = envoy_api_v2_core_GrpcService_EnvoyGrpc_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_EnvoyGrpc_serialize(const envoy_api_v2_core_GrpcService_EnvoyGrpc *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_EnvoyGrpc_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_EnvoyGrpc_cluster_name(const envoy_api_v2_core_GrpcService_EnvoyGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_EnvoyGrpc_set_cluster_name(envoy_api_v2_core_GrpcService_EnvoyGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc *envoy_api_v2_core_GrpcService_GoogleGrpc_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc *envoy_api_v2_core_GrpcService_GoogleGrpc_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_target_uri(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_channel_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*, UPB_SIZE(24, 48)); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* const* envoy_api_v2_core_GrpcService_GoogleGrpc_call_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t *len) { return (const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_stat_prefix(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_credentials_factory_name(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_config(const envoy_api_v2_core_GrpcService_GoogleGrpc *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_target_uri(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_channel_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_channel_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_channel_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_set_channel_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials** envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t *len) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials** envoy_api_v2_core_GrpcService_GoogleGrpc_resize_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_add_call_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_stat_prefix(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_credentials_factory_name(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_set_config(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_mutable_config(envoy_api_v2_core_GrpcService_GoogleGrpc *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_GrpcService_GoogleGrpc_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_set_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.SslCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_root_certs(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_private_key(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_cert_chain(const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_root_certs(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_root_certs(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_root_certs(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_root_certs(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_private_key(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_private_key(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_private_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_private_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_cert_chain(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_mutable_cert_chain(envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_cert_chain(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_set_cert_chain(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.GoogleLocalCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.ChannelCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_ssl_credentials = 1,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_google_default = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_local_credentials = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_credential_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_ssl_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_ssl_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_google_default(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_google_default(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Empty*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_has_local_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_local_credentials(const envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_ssl_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_ssl_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_ssl_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_SslCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_ssl_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_google_default(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, struct google_protobuf_Empty* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Empty*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_google_default(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct google_protobuf_Empty* sub = (struct google_protobuf_Empty*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_google_default(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Empty*)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_google_default(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_local_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_mutable_local_credentials(envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_local_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_GoogleLocalCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_ChannelCredentials_set_local_credentials(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_access_token = 1,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_compute_engine = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_refresh_token = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_service_account_jwt_access = 4,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_google_iam = 5,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_from_plugin = 6,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_sts_service = 7,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_credential_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_access_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_access_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_compute_engine(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE const struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_compute_engine(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Empty*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_refresh_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_refresh_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_service_account_jwt_access(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 4); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_service_account_jwt_access(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_google_iam(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_iam(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_from_plugin(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 6); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_from_plugin(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 6, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_has_sts_service(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 7); }
+UPB_INLINE const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_sts_service(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 7, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_access_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_compute_engine(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, struct google_protobuf_Empty* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Empty*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE struct google_protobuf_Empty* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_google_compute_engine(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct google_protobuf_Empty* sub = (struct google_protobuf_Empty*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_compute_engine(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Empty*)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_compute_engine(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_refresh_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_service_account_jwt_access(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 4);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_service_account_jwt_access(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_service_account_jwt_access(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_service_account_jwt_access(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_iam(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_google_iam(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_google_iam(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_google_iam(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_from_plugin(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 6);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_from_plugin(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_from_plugin(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_from_plugin(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_sts_service(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 7);
+}
+UPB_INLINE struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_mutable_sts_service(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService* sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_sts_service(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService*)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_set_sts_service(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.ServiceAccountJWTAccessCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_json_key(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_token_lifetime_seconds(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_set_json_key(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials_set_token_lifetime_seconds(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_ServiceAccountJWTAccessCredentials *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.GoogleIAMCredentials */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_authorization_token(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_authority_selector(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_set_authorization_token(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials_set_authority_selector(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_GoogleIAMCredentials *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.MetadataCredentialsFromPlugin */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_config = 2,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_typed_config = 3,
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_NOT_SET = 0
+} envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_case(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin* msg) { return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_name(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_has_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_has_typed_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_typed_config(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_name(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_mutable_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_typed_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_mutable_typed_config(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_MetadataCredentialsFromPlugin_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.GrpcService.GoogleGrpc.CallCredentials.StsService */
+
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *)upb_msg_new(&envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *ret = envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_serialize(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_token_exchange_service_uri(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_resource(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_audience(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_scope(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_requested_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 64)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_subject_token_path(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 80)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_subject_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 96)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_actor_token_path(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 112)); }
+UPB_INLINE upb_strview envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_actor_token_type(const envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 128)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_token_exchange_service_uri(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_resource(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_audience(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_scope(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_requested_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_subject_token_path(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 80)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_subject_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 96)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_actor_token_path(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 112)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService_set_actor_token_type(envoy_api_v2_core_GrpcService_GoogleGrpc_CallCredentials_StsService *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 128)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_GRPC_SERVICE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.c
new file mode 100644
index 0000000..a9b2e2c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.c	
@@ -0,0 +1,228 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/health_check.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h"
+#else
+  #include  "envoy/api/v2/core/health_check.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/http.upb.h"
+#else
+  #include  "envoy/type/http.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/string.upb.h"
+#else
+  #include  "envoy/type/matcher/string.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/range.upb.h"
+#else
+  #include  "envoy/type/range.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_core_HealthCheck_submsgs[17] = {
+  &envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit,
+  &envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit,
+  &envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit,
+  &envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit,
+  &envoy_api_v2_core_HealthCheck_TlsOptions_msginit,
+  &google_protobuf_BoolValue_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck__fields[20] = {
+  {1, UPB_SIZE(16, 24), 0, 6, 11, 1},
+  {2, UPB_SIZE(20, 32), 0, 6, 11, 1},
+  {3, UPB_SIZE(24, 40), 0, 6, 11, 1},
+  {4, UPB_SIZE(28, 48), 0, 7, 11, 1},
+  {5, UPB_SIZE(32, 56), 0, 7, 11, 1},
+  {6, UPB_SIZE(36, 64), 0, 7, 11, 1},
+  {7, UPB_SIZE(40, 72), 0, 5, 11, 1},
+  {8, UPB_SIZE(68, 128), UPB_SIZE(-73, -137), 2, 11, 1},
+  {9, UPB_SIZE(68, 128), UPB_SIZE(-73, -137), 3, 11, 1},
+  {11, UPB_SIZE(68, 128), UPB_SIZE(-73, -137), 1, 11, 1},
+  {12, UPB_SIZE(44, 80), 0, 6, 11, 1},
+  {13, UPB_SIZE(68, 128), UPB_SIZE(-73, -137), 0, 11, 1},
+  {14, UPB_SIZE(48, 88), 0, 6, 11, 1},
+  {15, UPB_SIZE(52, 96), 0, 6, 11, 1},
+  {16, UPB_SIZE(56, 104), 0, 6, 11, 1},
+  {17, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {18, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {19, UPB_SIZE(4, 4), 0, 0, 8, 1},
+  {20, UPB_SIZE(60, 112), 0, 6, 11, 1},
+  {21, UPB_SIZE(64, 120), 0, 4, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_msginit = {
+  &envoy_api_v2_core_HealthCheck_submsgs[0],
+  &envoy_api_v2_core_HealthCheck__fields[0],
+  UPB_SIZE(80, 144), 20, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_Payload__fields[2] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 12, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_Payload_msginit = {
+  NULL,
+  &envoy_api_v2_core_HealthCheck_Payload__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HealthCheck_HttpHealthCheck_submsgs[5] = {
+  &envoy_api_v2_core_HeaderValueOption_msginit,
+  &envoy_api_v2_core_HealthCheck_Payload_msginit,
+  &envoy_type_Int64Range_msginit,
+  &envoy_type_matcher_StringMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_HttpHealthCheck__fields[11] = {
+  {1, UPB_SIZE(12, 16), 0, 0, 9, 1},
+  {2, UPB_SIZE(20, 32), 0, 0, 9, 1},
+  {3, UPB_SIZE(36, 64), 0, 1, 11, 1},
+  {4, UPB_SIZE(40, 72), 0, 1, 11, 1},
+  {5, UPB_SIZE(28, 48), 0, 0, 9, 1},
+  {6, UPB_SIZE(48, 88), 0, 0, 11, 3},
+  {7, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {8, UPB_SIZE(52, 96), 0, 0, 9, 3},
+  {9, UPB_SIZE(56, 104), 0, 2, 11, 3},
+  {10, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {11, UPB_SIZE(44, 80), 0, 3, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit = {
+  &envoy_api_v2_core_HealthCheck_HttpHealthCheck_submsgs[0],
+  &envoy_api_v2_core_HealthCheck_HttpHealthCheck__fields[0],
+  UPB_SIZE(64, 112), 11, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HealthCheck_TcpHealthCheck_submsgs[2] = {
+  &envoy_api_v2_core_HealthCheck_Payload_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_TcpHealthCheck__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit = {
+  &envoy_api_v2_core_HealthCheck_TcpHealthCheck_submsgs[0],
+  &envoy_api_v2_core_HealthCheck_TcpHealthCheck__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_RedisHealthCheck__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit = {
+  NULL,
+  &envoy_api_v2_core_HealthCheck_RedisHealthCheck__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_GrpcHealthCheck__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit = {
+  NULL,
+  &envoy_api_v2_core_HealthCheck_GrpcHealthCheck__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HealthCheck_CustomHealthCheck_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_CustomHealthCheck__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit = {
+  &envoy_api_v2_core_HealthCheck_CustomHealthCheck_submsgs[0],
+  &envoy_api_v2_core_HealthCheck_CustomHealthCheck__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HealthCheck_TlsOptions__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_core_HealthCheck_TlsOptions_msginit = {
+  NULL,
+  &envoy_api_v2_core_HealthCheck_TlsOptions__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h
new file mode 100644
index 0000000..f619e66
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h	
@@ -0,0 +1,682 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/health_check.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_HealthCheck;
+struct envoy_api_v2_core_HealthCheck_Payload;
+struct envoy_api_v2_core_HealthCheck_HttpHealthCheck;
+struct envoy_api_v2_core_HealthCheck_TcpHealthCheck;
+struct envoy_api_v2_core_HealthCheck_RedisHealthCheck;
+struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck;
+struct envoy_api_v2_core_HealthCheck_CustomHealthCheck;
+struct envoy_api_v2_core_HealthCheck_TlsOptions;
+typedef struct envoy_api_v2_core_HealthCheck envoy_api_v2_core_HealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_Payload envoy_api_v2_core_HealthCheck_Payload;
+typedef struct envoy_api_v2_core_HealthCheck_HttpHealthCheck envoy_api_v2_core_HealthCheck_HttpHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_TcpHealthCheck envoy_api_v2_core_HealthCheck_TcpHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_RedisHealthCheck envoy_api_v2_core_HealthCheck_RedisHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck envoy_api_v2_core_HealthCheck_GrpcHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_CustomHealthCheck envoy_api_v2_core_HealthCheck_CustomHealthCheck;
+typedef struct envoy_api_v2_core_HealthCheck_TlsOptions envoy_api_v2_core_HealthCheck_TlsOptions;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_Payload_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit;
+extern const upb_msglayout envoy_api_v2_core_HealthCheck_TlsOptions_msginit;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_type_Int64Range;
+struct envoy_type_matcher_StringMatcher;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_core_UNKNOWN = 0,
+  envoy_api_v2_core_HEALTHY = 1,
+  envoy_api_v2_core_UNHEALTHY = 2,
+  envoy_api_v2_core_DRAINING = 3,
+  envoy_api_v2_core_TIMEOUT = 4,
+  envoy_api_v2_core_DEGRADED = 5
+} envoy_api_v2_core_HealthStatus;
+
+
+/* envoy.api.v2.core.HealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck *envoy_api_v2_core_HealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck *envoy_api_v2_core_HealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck *ret = envoy_api_v2_core_HealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_serialize(const envoy_api_v2_core_HealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_health_checker_http_health_check = 8,
+  envoy_api_v2_core_HealthCheck_health_checker_tcp_health_check = 9,
+  envoy_api_v2_core_HealthCheck_health_checker_grpc_health_check = 11,
+  envoy_api_v2_core_HealthCheck_health_checker_custom_health_check = 13,
+  envoy_api_v2_core_HealthCheck_health_checker_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_health_checker_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_health_checker_oneofcases envoy_api_v2_core_HealthCheck_health_checker_case(const envoy_api_v2_core_HealthCheck* msg) { return (envoy_api_v2_core_HealthCheck_health_checker_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(72, 136)); }
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_timeout(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_interval_jitter(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_unhealthy_threshold(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_healthy_threshold(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_alt_port(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 64)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_HealthCheck_reuse_connection(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(40, 72)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_http_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 8); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_HttpHealthCheck* envoy_api_v2_core_HealthCheck_http_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_HttpHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 8, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_tcp_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 9); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_TcpHealthCheck* envoy_api_v2_core_HealthCheck_tcp_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_TcpHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 9, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_grpc_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 11); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_GrpcHealthCheck* envoy_api_v2_core_HealthCheck_grpc_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_GrpcHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 11, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_no_traffic_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(44, 80)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_has_custom_health_check(const envoy_api_v2_core_HealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(72, 136), 13); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_CustomHealthCheck* envoy_api_v2_core_HealthCheck_custom_health_check(const envoy_api_v2_core_HealthCheck *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_HealthCheck_CustomHealthCheck*, UPB_SIZE(68, 128), UPB_SIZE(72, 136), 13, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_unhealthy_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(48, 88)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_unhealthy_edge_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(52, 96)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_healthy_edge_interval(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(56, 104)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_event_log_path(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint32_t envoy_api_v2_core_HealthCheck_interval_jitter_percent(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_always_log_health_check_failures(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_initial_jitter(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 112)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_TlsOptions* envoy_api_v2_core_HealthCheck_tls_options(const envoy_api_v2_core_HealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_TlsOptions*, UPB_SIZE(64, 120)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_timeout(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_timeout(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval_jitter(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_interval_jitter(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_interval_jitter(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_interval_jitter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_threshold(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_unhealthy_threshold(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_unhealthy_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_healthy_threshold(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_healthy_threshold(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_healthy_threshold(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_healthy_threshold(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_alt_port(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HealthCheck_mutable_alt_port(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HealthCheck_alt_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_alt_port(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_reuse_connection(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_HealthCheck_mutable_reuse_connection(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_HealthCheck_reuse_connection(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_reuse_connection(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_http_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_HttpHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_HttpHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 8);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_HttpHealthCheck* envoy_api_v2_core_HealthCheck_mutable_http_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_HttpHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_HttpHealthCheck*)envoy_api_v2_core_HealthCheck_http_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_HttpHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_http_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_tcp_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_TcpHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_TcpHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 9);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_TcpHealthCheck* envoy_api_v2_core_HealthCheck_mutable_tcp_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_TcpHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_TcpHealthCheck*)envoy_api_v2_core_HealthCheck_tcp_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_TcpHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_tcp_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_grpc_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_GrpcHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_GrpcHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 11);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck* envoy_api_v2_core_HealthCheck_mutable_grpc_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck*)envoy_api_v2_core_HealthCheck_grpc_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_GrpcHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_grpc_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_no_traffic_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(44, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_no_traffic_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_no_traffic_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_no_traffic_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_custom_health_check(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_CustomHealthCheck* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_HealthCheck_CustomHealthCheck*, UPB_SIZE(68, 128), value, UPB_SIZE(72, 136), 13);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_CustomHealthCheck* envoy_api_v2_core_HealthCheck_mutable_custom_health_check(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_CustomHealthCheck* sub = (struct envoy_api_v2_core_HealthCheck_CustomHealthCheck*)envoy_api_v2_core_HealthCheck_custom_health_check(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_CustomHealthCheck*)upb_msg_new(&envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_custom_health_check(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(48, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_unhealthy_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_unhealthy_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_unhealthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(52, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_unhealthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_unhealthy_edge_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_unhealthy_edge_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_healthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(56, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_healthy_edge_interval(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_healthy_edge_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_healthy_edge_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_event_log_path(envoy_api_v2_core_HealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_interval_jitter_percent(envoy_api_v2_core_HealthCheck *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_always_log_health_check_failures(envoy_api_v2_core_HealthCheck *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_initial_jitter(envoy_api_v2_core_HealthCheck *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HealthCheck_mutable_initial_jitter(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HealthCheck_initial_jitter(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_initial_jitter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_set_tls_options(envoy_api_v2_core_HealthCheck *msg, envoy_api_v2_core_HealthCheck_TlsOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_TlsOptions*, UPB_SIZE(64, 120)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_TlsOptions* envoy_api_v2_core_HealthCheck_mutable_tls_options(envoy_api_v2_core_HealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_TlsOptions* sub = (struct envoy_api_v2_core_HealthCheck_TlsOptions*)envoy_api_v2_core_HealthCheck_tls_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_TlsOptions*)upb_msg_new(&envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_set_tls_options(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.Payload */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload *envoy_api_v2_core_HealthCheck_Payload_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_Payload *)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload *envoy_api_v2_core_HealthCheck_Payload_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_Payload *ret = envoy_api_v2_core_HealthCheck_Payload_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_Payload_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_Payload_serialize(const envoy_api_v2_core_HealthCheck_Payload *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_Payload_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_Payload_payload_text = 1,
+  envoy_api_v2_core_HealthCheck_Payload_payload_binary = 2,
+  envoy_api_v2_core_HealthCheck_Payload_payload_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases envoy_api_v2_core_HealthCheck_Payload_payload_case(const envoy_api_v2_core_HealthCheck_Payload* msg) { return (envoy_api_v2_core_HealthCheck_Payload_payload_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_Payload_has_text(const envoy_api_v2_core_HealthCheck_Payload *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_Payload_text(const envoy_api_v2_core_HealthCheck_Payload *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_Payload_has_binary(const envoy_api_v2_core_HealthCheck_Payload *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_Payload_binary(const envoy_api_v2_core_HealthCheck_Payload *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_Payload_set_text(envoy_api_v2_core_HealthCheck_Payload *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_Payload_set_binary(envoy_api_v2_core_HealthCheck_Payload *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+
+/* envoy.api.v2.core.HealthCheck.HttpHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_HttpHealthCheck *envoy_api_v2_core_HealthCheck_HttpHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_HttpHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_HttpHealthCheck *envoy_api_v2_core_HealthCheck_HttpHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_HttpHealthCheck *ret = envoy_api_v2_core_HealthCheck_HttpHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_HttpHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_HttpHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_host(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_path(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_send(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(36, 64)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_receive(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(40, 72)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_request_headers_to_add(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_HttpHealthCheck_use_http2(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_request_headers_to_remove(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(52, 96), len); }
+UPB_INLINE const struct envoy_type_Int64Range* const* envoy_api_v2_core_HealthCheck_HttpHealthCheck_expected_statuses(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) { return (const struct envoy_type_Int64Range* const*)_upb_array_accessor(msg, UPB_SIZE(56, 104), len); }
+UPB_INLINE int32_t envoy_api_v2_core_HealthCheck_HttpHealthCheck_codec_client_type(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name_matcher(const envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_matcher_StringMatcher*, UPB_SIZE(44, 80)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_host(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_path(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_send(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_send(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_send(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_send(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_receive(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_receive(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_receive(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_receive(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_request_headers_to_add(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_use_http2(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 96), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 96), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_request_headers_to_remove(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 96), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_type_Int64Range** envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t *len) {
+  return (struct envoy_type_Int64Range**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 104), len);
+}
+UPB_INLINE struct envoy_type_Int64Range** envoy_api_v2_core_HealthCheck_HttpHealthCheck_resize_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_Int64Range**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_Int64Range* envoy_api_v2_core_HealthCheck_HttpHealthCheck_add_expected_statuses(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_type_Int64Range* sub = (struct envoy_type_Int64Range*)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_codec_client_type(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name_matcher(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, struct envoy_type_matcher_StringMatcher* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_matcher_StringMatcher*, UPB_SIZE(44, 80)) = value;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_core_HealthCheck_HttpHealthCheck_mutable_service_name_matcher(envoy_api_v2_core_HealthCheck_HttpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)envoy_api_v2_core_HealthCheck_HttpHealthCheck_service_name_matcher(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_HttpHealthCheck_set_service_name_matcher(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.TcpHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_TcpHealthCheck *envoy_api_v2_core_HealthCheck_TcpHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_TcpHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_TcpHealthCheck *envoy_api_v2_core_HealthCheck_TcpHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_TcpHealthCheck *ret = envoy_api_v2_core_HealthCheck_TcpHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_TcpHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_TcpHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_send(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_core_HealthCheck_Payload* const* envoy_api_v2_core_HealthCheck_TcpHealthCheck_receive(const envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t *len) { return (const envoy_api_v2_core_HealthCheck_Payload* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_TcpHealthCheck_set_send(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, envoy_api_v2_core_HealthCheck_Payload* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_HealthCheck_Payload*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_mutable_send(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)envoy_api_v2_core_HealthCheck_TcpHealthCheck_send(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_TcpHealthCheck_set_send(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload** envoy_api_v2_core_HealthCheck_TcpHealthCheck_mutable_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t *len) {
+  return (envoy_api_v2_core_HealthCheck_Payload**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_Payload** envoy_api_v2_core_HealthCheck_TcpHealthCheck_resize_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_Payload**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HealthCheck_Payload* envoy_api_v2_core_HealthCheck_TcpHealthCheck_add_receive(envoy_api_v2_core_HealthCheck_TcpHealthCheck *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HealthCheck_Payload* sub = (struct envoy_api_v2_core_HealthCheck_Payload*)upb_msg_new(&envoy_api_v2_core_HealthCheck_Payload_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.RedisHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_RedisHealthCheck *envoy_api_v2_core_HealthCheck_RedisHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_RedisHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_RedisHealthCheck *envoy_api_v2_core_HealthCheck_RedisHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_RedisHealthCheck *ret = envoy_api_v2_core_HealthCheck_RedisHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_RedisHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_RedisHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_RedisHealthCheck_key(const envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_RedisHealthCheck_set_key(envoy_api_v2_core_HealthCheck_RedisHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.core.HealthCheck.GrpcHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_GrpcHealthCheck *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_GrpcHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_GrpcHealthCheck *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_GrpcHealthCheck *ret = envoy_api_v2_core_HealthCheck_GrpcHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_GrpcHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_GrpcHealthCheck_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_GrpcHealthCheck_service_name(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_GrpcHealthCheck_authority(const envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_GrpcHealthCheck_set_service_name(envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_GrpcHealthCheck_set_authority(envoy_api_v2_core_HealthCheck_GrpcHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.core.HealthCheck.CustomHealthCheck */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck *envoy_api_v2_core_HealthCheck_CustomHealthCheck_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_CustomHealthCheck *)upb_msg_new(&envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck *envoy_api_v2_core_HealthCheck_CustomHealthCheck_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck *ret = envoy_api_v2_core_HealthCheck_CustomHealthCheck_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_CustomHealthCheck_serialize(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_CustomHealthCheck_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_config = 2,
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_typed_config = 3,
+  envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_NOT_SET = 0
+} envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_case(const envoy_api_v2_core_HealthCheck_CustomHealthCheck* msg) { return (envoy_api_v2_core_HealthCheck_CustomHealthCheck_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_HealthCheck_CustomHealthCheck_name(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_CustomHealthCheck_has_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_core_HealthCheck_CustomHealthCheck_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_CustomHealthCheck_has_typed_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_core_HealthCheck_CustomHealthCheck_typed_config(const envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_name(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_core_HealthCheck_CustomHealthCheck_mutable_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_core_HealthCheck_CustomHealthCheck_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_typed_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_core_HealthCheck_CustomHealthCheck_mutable_typed_config(envoy_api_v2_core_HealthCheck_CustomHealthCheck *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_core_HealthCheck_CustomHealthCheck_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HealthCheck_CustomHealthCheck_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.HealthCheck.TlsOptions */
+
+UPB_INLINE envoy_api_v2_core_HealthCheck_TlsOptions *envoy_api_v2_core_HealthCheck_TlsOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HealthCheck_TlsOptions *)upb_msg_new(&envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HealthCheck_TlsOptions *envoy_api_v2_core_HealthCheck_TlsOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HealthCheck_TlsOptions *ret = envoy_api_v2_core_HealthCheck_TlsOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HealthCheck_TlsOptions_serialize(const envoy_api_v2_core_HealthCheck_TlsOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HealthCheck_TlsOptions_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_api_v2_core_HealthCheck_TlsOptions_alpn_protocols(const envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_TlsOptions_mutable_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_core_HealthCheck_TlsOptions_resize_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_core_HealthCheck_TlsOptions_add_alpn_protocols(envoy_api_v2_core_HealthCheck_TlsOptions *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_HEALTH_CHECK_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.c
new file mode 100644
index 0000000..37e640c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.c	
@@ -0,0 +1,63 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/http_uri.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h"
+#else
+  #include  "envoy/api/v2/core/http_uri.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_core_HttpUri_submsgs[1] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HttpUri__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 9, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HttpUri_msginit = {
+  &envoy_api_v2_core_HttpUri_submsgs[0],
+  &envoy_api_v2_core_HttpUri__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h
new file mode 100644
index 0000000..1ecd62f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/http_uri.upb.h	
@@ -0,0 +1,104 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/http_uri.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_HttpUri;
+typedef struct envoy_api_v2_core_HttpUri envoy_api_v2_core_HttpUri;
+extern const upb_msglayout envoy_api_v2_core_HttpUri_msginit;
+struct google_protobuf_Duration;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* envoy.api.v2.core.HttpUri */
+
+UPB_INLINE envoy_api_v2_core_HttpUri *envoy_api_v2_core_HttpUri_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HttpUri *)upb_msg_new(&envoy_api_v2_core_HttpUri_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HttpUri *envoy_api_v2_core_HttpUri_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HttpUri *ret = envoy_api_v2_core_HttpUri_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HttpUri_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HttpUri_serialize(const envoy_api_v2_core_HttpUri *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HttpUri_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_HttpUri_http_upstream_type_cluster = 2,
+  envoy_api_v2_core_HttpUri_http_upstream_type_NOT_SET = 0
+} envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases;
+UPB_INLINE envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases envoy_api_v2_core_HttpUri_http_upstream_type_case(const envoy_api_v2_core_HttpUri* msg) { return (envoy_api_v2_core_HttpUri_http_upstream_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_api_v2_core_HttpUri_uri(const envoy_api_v2_core_HttpUri *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_HttpUri_has_cluster(const envoy_api_v2_core_HttpUri *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 2); }
+UPB_INLINE upb_strview envoy_api_v2_core_HttpUri_cluster(const envoy_api_v2_core_HttpUri *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpUri_timeout(const envoy_api_v2_core_HttpUri *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_uri(envoy_api_v2_core_HttpUri *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_cluster(envoy_api_v2_core_HttpUri *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 2);
+}
+UPB_INLINE void envoy_api_v2_core_HttpUri_set_timeout(envoy_api_v2_core_HttpUri *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpUri_mutable_timeout(envoy_api_v2_core_HttpUri *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpUri_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpUri_set_timeout(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_HTTP_URI_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.c
new file mode 100644
index 0000000..ac1a783
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.c	
@@ -0,0 +1,164 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/protocol.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h"
+#else
+  #include  "envoy/api/v2/core/protocol.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_core_TcpProtocolOptions_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_UpstreamHttpProtocolOptions__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {2, UPB_SIZE(1, 1), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit = {
+  NULL,
+  &envoy_api_v2_core_UpstreamHttpProtocolOptions__fields[0],
+  UPB_SIZE(2, 2), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_HttpProtocolOptions_submsgs[3] = {
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_HttpProtocolOptions__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit = {
+  &envoy_api_v2_core_HttpProtocolOptions_submsgs[0],
+  &envoy_api_v2_core_HttpProtocolOptions__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Http1ProtocolOptions_submsgs[2] = {
+  &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Http1ProtocolOptions__fields[5] = {
+  {1, UPB_SIZE(12, 24), 0, 1, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {3, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {4, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {5, UPB_SIZE(1, 1), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit = {
+  &envoy_api_v2_core_Http1ProtocolOptions_submsgs[0],
+  &envoy_api_v2_core_Http1ProtocolOptions__fields[0],
+  UPB_SIZE(24, 48), 5, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_submsgs[1] = {
+  &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat__fields[1] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit = {
+  &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_submsgs[0],
+  &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_Http2ProtocolOptions_submsgs[9] = {
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_Http2ProtocolOptions__fields[12] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {4, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {5, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {6, UPB_SIZE(1, 1), 0, 0, 8, 1},
+  {7, UPB_SIZE(20, 40), 0, 0, 11, 1},
+  {8, UPB_SIZE(24, 48), 0, 0, 11, 1},
+  {9, UPB_SIZE(28, 56), 0, 0, 11, 1},
+  {10, UPB_SIZE(32, 64), 0, 0, 11, 1},
+  {11, UPB_SIZE(36, 72), 0, 0, 11, 1},
+  {12, UPB_SIZE(2, 2), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit = {
+  &envoy_api_v2_core_Http2ProtocolOptions_submsgs[0],
+  &envoy_api_v2_core_Http2ProtocolOptions__fields[0],
+  UPB_SIZE(40, 80), 12, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_core_GrpcProtocolOptions_submsgs[1] = {
+  &envoy_api_v2_core_Http2ProtocolOptions_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_core_GrpcProtocolOptions__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_core_GrpcProtocolOptions_msginit = {
+  &envoy_api_v2_core_GrpcProtocolOptions_submsgs[0],
+  &envoy_api_v2_core_GrpcProtocolOptions__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h
new file mode 100644
index 0000000..a405cf4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h	
@@ -0,0 +1,460 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/core/protocol.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_
+#define ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_core_TcpProtocolOptions;
+struct envoy_api_v2_core_UpstreamHttpProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat;
+struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_GrpcProtocolOptions;
+typedef struct envoy_api_v2_core_TcpProtocolOptions envoy_api_v2_core_TcpProtocolOptions;
+typedef struct envoy_api_v2_core_UpstreamHttpProtocolOptions envoy_api_v2_core_UpstreamHttpProtocolOptions;
+typedef struct envoy_api_v2_core_HttpProtocolOptions envoy_api_v2_core_HttpProtocolOptions;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions envoy_api_v2_core_Http1ProtocolOptions;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat;
+typedef struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords;
+typedef struct envoy_api_v2_core_Http2ProtocolOptions envoy_api_v2_core_Http2ProtocolOptions;
+typedef struct envoy_api_v2_core_GrpcProtocolOptions envoy_api_v2_core_GrpcProtocolOptions;
+extern const upb_msglayout envoy_api_v2_core_TcpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_GrpcProtocolOptions_msginit;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.core.TcpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_TcpProtocolOptions *envoy_api_v2_core_TcpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_TcpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_TcpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_TcpProtocolOptions *envoy_api_v2_core_TcpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_TcpProtocolOptions *ret = envoy_api_v2_core_TcpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_TcpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_TcpProtocolOptions_serialize(const envoy_api_v2_core_TcpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_TcpProtocolOptions_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.UpstreamHttpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_UpstreamHttpProtocolOptions *envoy_api_v2_core_UpstreamHttpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_UpstreamHttpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_UpstreamHttpProtocolOptions *envoy_api_v2_core_UpstreamHttpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_UpstreamHttpProtocolOptions *ret = envoy_api_v2_core_UpstreamHttpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_UpstreamHttpProtocolOptions_serialize(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_UpstreamHttpProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_core_UpstreamHttpProtocolOptions_auto_sni(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_UpstreamHttpProtocolOptions_auto_san_validation(const envoy_api_v2_core_UpstreamHttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_core_UpstreamHttpProtocolOptions_set_auto_sni(envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_UpstreamHttpProtocolOptions_set_auto_san_validation(envoy_api_v2_core_UpstreamHttpProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.core.HttpProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_HttpProtocolOptions *envoy_api_v2_core_HttpProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_HttpProtocolOptions *)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_HttpProtocolOptions *envoy_api_v2_core_HttpProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_HttpProtocolOptions *ret = envoy_api_v2_core_HttpProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_HttpProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_HttpProtocolOptions_serialize(const envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_HttpProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_idle_timeout(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_HttpProtocolOptions_max_headers_count(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_max_connection_duration(const envoy_api_v2_core_HttpProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_idle_timeout(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_mutable_idle_timeout(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpProtocolOptions_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_max_headers_count(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_HttpProtocolOptions_mutable_max_headers_count(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_HttpProtocolOptions_max_headers_count(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_max_headers_count(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_HttpProtocolOptions_set_max_connection_duration(envoy_api_v2_core_HttpProtocolOptions *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_core_HttpProtocolOptions_mutable_max_connection_duration(envoy_api_v2_core_HttpProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_core_HttpProtocolOptions_max_connection_duration(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_HttpProtocolOptions_set_max_connection_duration(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions *envoy_api_v2_core_Http1ProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions *envoy_api_v2_core_Http1ProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions *ret = envoy_api_v2_core_Http1ProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_serialize(const envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_core_Http1ProtocolOptions_allow_absolute_url(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_accept_http_10(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_core_Http1ProtocolOptions_default_host_for_http_10(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* envoy_api_v2_core_Http1ProtocolOptions_header_key_format(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_enable_trailers(const envoy_api_v2_core_Http1ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_allow_absolute_url(envoy_api_v2_core_Http1ProtocolOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_core_Http1ProtocolOptions_mutable_allow_absolute_url(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_core_Http1ProtocolOptions_allow_absolute_url(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_set_allow_absolute_url(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_accept_http_10(envoy_api_v2_core_Http1ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_default_host_for_http_10(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_header_key_format(envoy_api_v2_core_Http1ProtocolOptions *msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* envoy_api_v2_core_Http1ProtocolOptions_mutable_header_key_format(envoy_api_v2_core_Http1ProtocolOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*)envoy_api_v2_core_Http1ProtocolOptions_header_key_format(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_set_header_key_format(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_set_enable_trailers(envoy_api_v2_core_Http1ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions.HeaderKeyFormat */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *ret = envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_serialize(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_proper_case_words = 1,
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_NOT_SET = 0
+} envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases;
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_case(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat* msg) { return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_header_format_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_has_proper_case_words(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_proper_case_words(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_set_proper_case_words(envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_mutable_proper_case_words(envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords* sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*)envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_proper_case_words(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_set_proper_case_words(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.core.Http1ProtocolOptions.HeaderKeyFormat.ProperCaseWords */
+
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *ret = envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_serialize(const envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http1ProtocolOptions_HeaderKeyFormat_ProperCaseWords_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.core.Http2ProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_Http2ProtocolOptions *envoy_api_v2_core_Http2ProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_Http2ProtocolOptions *)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_Http2ProtocolOptions *envoy_api_v2_core_Http2ProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_Http2ProtocolOptions *ret = envoy_api_v2_core_Http2ProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_Http2ProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_Http2ProtocolOptions_serialize(const envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_Http2ProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_hpack_table_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_concurrent_streams(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_initial_stream_window_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_initial_connection_window_size(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_allow_connect(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_allow_metadata(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_outbound_frames(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_outbound_control_frames(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_consecutive_inbound_frames_with_empty_payload(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_inbound_priority_frames_per_stream(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_max_inbound_window_update_frames_per_data_frame_sent(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)); }
+UPB_INLINE bool envoy_api_v2_core_Http2ProtocolOptions_stream_error_on_invalid_http_messaging(const envoy_api_v2_core_Http2ProtocolOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_hpack_table_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_hpack_table_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_hpack_table_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_hpack_table_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_concurrent_streams(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_concurrent_streams(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_concurrent_streams(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_concurrent_streams(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_initial_stream_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_initial_stream_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_initial_stream_window_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_initial_stream_window_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_initial_connection_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_initial_connection_window_size(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_initial_connection_window_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_initial_connection_window_size(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_allow_connect(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_allow_metadata(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_outbound_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_outbound_frames(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_frames(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_control_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_outbound_control_frames(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_outbound_control_frames(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_outbound_control_frames(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_consecutive_inbound_frames_with_empty_payload(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_consecutive_inbound_frames_with_empty_payload(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_consecutive_inbound_frames_with_empty_payload(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_consecutive_inbound_frames_with_empty_payload(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_priority_frames_per_stream(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_inbound_priority_frames_per_stream(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_inbound_priority_frames_per_stream(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_priority_frames_per_stream(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_window_update_frames_per_data_frame_sent(envoy_api_v2_core_Http2ProtocolOptions *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_core_Http2ProtocolOptions_mutable_max_inbound_window_update_frames_per_data_frame_sent(envoy_api_v2_core_Http2ProtocolOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_core_Http2ProtocolOptions_max_inbound_window_update_frames_per_data_frame_sent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_Http2ProtocolOptions_set_max_inbound_window_update_frames_per_data_frame_sent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_core_Http2ProtocolOptions_set_stream_error_on_invalid_http_messaging(envoy_api_v2_core_Http2ProtocolOptions *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* envoy.api.v2.core.GrpcProtocolOptions */
+
+UPB_INLINE envoy_api_v2_core_GrpcProtocolOptions *envoy_api_v2_core_GrpcProtocolOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_core_GrpcProtocolOptions *)upb_msg_new(&envoy_api_v2_core_GrpcProtocolOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_core_GrpcProtocolOptions *envoy_api_v2_core_GrpcProtocolOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_core_GrpcProtocolOptions *ret = envoy_api_v2_core_GrpcProtocolOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_core_GrpcProtocolOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_core_GrpcProtocolOptions_serialize(const envoy_api_v2_core_GrpcProtocolOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_core_GrpcProtocolOptions_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_core_GrpcProtocolOptions_http2_protocol_options(const envoy_api_v2_core_GrpcProtocolOptions *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_core_GrpcProtocolOptions_set_http2_protocol_options(envoy_api_v2_core_GrpcProtocolOptions *msg, envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_api_v2_core_GrpcProtocolOptions_mutable_http2_protocol_options(envoy_api_v2_core_GrpcProtocolOptions *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_api_v2_core_GrpcProtocolOptions_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_core_GrpcProtocolOptions_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_CORE_PROTOCOL_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.c
new file mode 100644
index 0000000..0e4c541
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.c	
@@ -0,0 +1,160 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/discovery.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/rpc/status.upb.h"
+#else
+  #include  "google/rpc/status.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_DiscoveryRequest_submsgs[2] = {
+  &envoy_api_v2_core_Node_msginit,
+  &google_rpc_Status_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_DiscoveryRequest__fields[6] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(24, 48), 0, 0, 11, 1},
+  {3, UPB_SIZE(32, 64), 0, 0, 9, 3},
+  {4, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {6, UPB_SIZE(28, 56), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_DiscoveryRequest_msginit = {
+  &envoy_api_v2_DiscoveryRequest_submsgs[0],
+  &envoy_api_v2_DiscoveryRequest__fields[0],
+  UPB_SIZE(40, 80), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_DiscoveryResponse_submsgs[2] = {
+  &envoy_api_v2_core_ControlPlane_msginit,
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_DiscoveryResponse__fields[6] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(32, 64), 0, 1, 11, 3},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {4, UPB_SIZE(12, 24), 0, 0, 9, 1},
+  {5, UPB_SIZE(20, 40), 0, 0, 9, 1},
+  {6, UPB_SIZE(28, 56), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_DiscoveryResponse_msginit = {
+  &envoy_api_v2_DiscoveryResponse_submsgs[0],
+  &envoy_api_v2_DiscoveryResponse__fields[0],
+  UPB_SIZE(40, 80), 6, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_DeltaDiscoveryRequest_submsgs[3] = {
+  &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit,
+  &envoy_api_v2_core_Node_msginit,
+  &google_rpc_Status_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_DeltaDiscoveryRequest__fields[7] = {
+  {1, UPB_SIZE(16, 32), 0, 1, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {3, UPB_SIZE(24, 48), 0, 0, 9, 3},
+  {4, UPB_SIZE(28, 56), 0, 0, 9, 3},
+  {5, UPB_SIZE(32, 64), 0, 0, 11, 3},
+  {6, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {7, UPB_SIZE(20, 40), 0, 2, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_msginit = {
+  &envoy_api_v2_DeltaDiscoveryRequest_submsgs[0],
+  &envoy_api_v2_DeltaDiscoveryRequest__fields[0],
+  UPB_SIZE(40, 80), 7, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit = {
+  NULL,
+  &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_DeltaDiscoveryResponse_submsgs[1] = {
+  &envoy_api_v2_Resource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_DeltaDiscoveryResponse__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(24, 48), 0, 0, 11, 3},
+  {4, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {6, UPB_SIZE(28, 56), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_DeltaDiscoveryResponse_msginit = {
+  &envoy_api_v2_DeltaDiscoveryResponse_submsgs[0],
+  &envoy_api_v2_DeltaDiscoveryResponse__fields[0],
+  UPB_SIZE(32, 64), 5, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Resource_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Resource__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {4, UPB_SIZE(20, 40), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_api_v2_Resource_msginit = {
+  &envoy_api_v2_Resource_submsgs[0],
+  &envoy_api_v2_Resource__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h
new file mode 100644
index 0000000..d6a8867
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h	
@@ -0,0 +1,416 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/discovery.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_
+#define ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_DiscoveryRequest;
+struct envoy_api_v2_DiscoveryResponse;
+struct envoy_api_v2_DeltaDiscoveryRequest;
+struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry;
+struct envoy_api_v2_DeltaDiscoveryResponse;
+struct envoy_api_v2_Resource;
+typedef struct envoy_api_v2_DiscoveryRequest envoy_api_v2_DiscoveryRequest;
+typedef struct envoy_api_v2_DiscoveryResponse envoy_api_v2_DiscoveryResponse;
+typedef struct envoy_api_v2_DeltaDiscoveryRequest envoy_api_v2_DeltaDiscoveryRequest;
+typedef struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry;
+typedef struct envoy_api_v2_DeltaDiscoveryResponse envoy_api_v2_DeltaDiscoveryResponse;
+typedef struct envoy_api_v2_Resource envoy_api_v2_Resource;
+extern const upb_msglayout envoy_api_v2_DiscoveryRequest_msginit;
+extern const upb_msglayout envoy_api_v2_DiscoveryResponse_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit;
+extern const upb_msglayout envoy_api_v2_DeltaDiscoveryResponse_msginit;
+extern const upb_msglayout envoy_api_v2_Resource_msginit;
+struct envoy_api_v2_core_ControlPlane;
+struct envoy_api_v2_core_Node;
+struct google_protobuf_Any;
+struct google_rpc_Status;
+extern const upb_msglayout envoy_api_v2_core_ControlPlane_msginit;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_rpc_Status_msginit;
+
+
+/* envoy.api.v2.DiscoveryRequest */
+
+UPB_INLINE envoy_api_v2_DiscoveryRequest *envoy_api_v2_DiscoveryRequest_new(upb_arena *arena) {
+  return (envoy_api_v2_DiscoveryRequest *)upb_msg_new(&envoy_api_v2_DiscoveryRequest_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DiscoveryRequest *envoy_api_v2_DiscoveryRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DiscoveryRequest *ret = envoy_api_v2_DiscoveryRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DiscoveryRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DiscoveryRequest_serialize(const envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DiscoveryRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_version_info(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_api_v2_DiscoveryRequest_node(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DiscoveryRequest_resource_names(const envoy_api_v2_DiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_type_url(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryRequest_response_nonce(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct google_rpc_Status* envoy_api_v2_DiscoveryRequest_error_detail(const envoy_api_v2_DiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct google_rpc_Status*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_version_info(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_node(envoy_api_v2_DiscoveryRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_api_v2_DiscoveryRequest_mutable_node(envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_api_v2_DiscoveryRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DiscoveryRequest_mutable_resource_names(envoy_api_v2_DiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DiscoveryRequest_resize_resource_names(envoy_api_v2_DiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DiscoveryRequest_add_resource_names(envoy_api_v2_DiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_type_url(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_response_nonce(envoy_api_v2_DiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryRequest_set_error_detail(envoy_api_v2_DiscoveryRequest *msg, struct google_rpc_Status* value) {
+  UPB_FIELD_AT(msg, struct google_rpc_Status*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_rpc_Status* envoy_api_v2_DiscoveryRequest_mutable_error_detail(envoy_api_v2_DiscoveryRequest *msg, upb_arena *arena) {
+  struct google_rpc_Status* sub = (struct google_rpc_Status*)envoy_api_v2_DiscoveryRequest_error_detail(msg);
+  if (sub == NULL) {
+    sub = (struct google_rpc_Status*)upb_msg_new(&google_rpc_Status_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryRequest_set_error_detail(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DiscoveryResponse */
+
+UPB_INLINE envoy_api_v2_DiscoveryResponse *envoy_api_v2_DiscoveryResponse_new(upb_arena *arena) {
+  return (envoy_api_v2_DiscoveryResponse *)upb_msg_new(&envoy_api_v2_DiscoveryResponse_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DiscoveryResponse *envoy_api_v2_DiscoveryResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DiscoveryResponse *ret = envoy_api_v2_DiscoveryResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DiscoveryResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DiscoveryResponse_serialize(const envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DiscoveryResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_version_info(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Any* const* envoy_api_v2_DiscoveryResponse_resources(const envoy_api_v2_DiscoveryResponse *msg, size_t *len) { return (const struct google_protobuf_Any* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE bool envoy_api_v2_DiscoveryResponse_canary(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_type_url(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_api_v2_DiscoveryResponse_nonce(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_ControlPlane* envoy_api_v2_DiscoveryResponse_control_plane(const envoy_api_v2_DiscoveryResponse *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ControlPlane*, UPB_SIZE(28, 56)); }
+
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_version_info(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Any** envoy_api_v2_DiscoveryResponse_mutable_resources(envoy_api_v2_DiscoveryResponse *msg, size_t *len) {
+  return (struct google_protobuf_Any**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE struct google_protobuf_Any** envoy_api_v2_DiscoveryResponse_resize_resources(envoy_api_v2_DiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Any**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_DiscoveryResponse_add_resources(envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_canary(envoy_api_v2_DiscoveryResponse *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_type_url(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_nonce(envoy_api_v2_DiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void envoy_api_v2_DiscoveryResponse_set_control_plane(envoy_api_v2_DiscoveryResponse *msg, struct envoy_api_v2_core_ControlPlane* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ControlPlane*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ControlPlane* envoy_api_v2_DiscoveryResponse_mutable_control_plane(envoy_api_v2_DiscoveryResponse *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ControlPlane* sub = (struct envoy_api_v2_core_ControlPlane*)envoy_api_v2_DiscoveryResponse_control_plane(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ControlPlane*)upb_msg_new(&envoy_api_v2_core_ControlPlane_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DiscoveryResponse_set_control_plane(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DeltaDiscoveryRequest */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest *envoy_api_v2_DeltaDiscoveryRequest_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest *envoy_api_v2_DeltaDiscoveryRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryRequest *ret = envoy_api_v2_DeltaDiscoveryRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryRequest_serialize(const envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryRequest_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_api_v2_DeltaDiscoveryRequest_node(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_type_url(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryRequest_resource_names_subscribe(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryRequest_resource_names_unsubscribe(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* const* envoy_api_v2_DeltaDiscoveryRequest_initial_resource_versions(const envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) { return (const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_response_nonce(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_rpc_Status* envoy_api_v2_DeltaDiscoveryRequest_error_detail(const envoy_api_v2_DeltaDiscoveryRequest *msg) { return UPB_FIELD_AT(msg, const struct google_rpc_Status*, UPB_SIZE(20, 40)); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_node(envoy_api_v2_DeltaDiscoveryRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_api_v2_DeltaDiscoveryRequest_mutable_node(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_api_v2_DeltaDiscoveryRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DeltaDiscoveryRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_type_url(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_mutable_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_resize_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryRequest_add_resource_names_subscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_mutable_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryRequest_resize_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryRequest_add_resource_names_unsubscribe(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry** envoy_api_v2_DeltaDiscoveryRequest_mutable_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t *len) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry** envoy_api_v2_DeltaDiscoveryRequest_resize_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* envoy_api_v2_DeltaDiscoveryRequest_add_initial_resource_versions(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry* sub = (struct envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry*)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_response_nonce(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_set_error_detail(envoy_api_v2_DeltaDiscoveryRequest *msg, struct google_rpc_Status* value) {
+  UPB_FIELD_AT(msg, struct google_rpc_Status*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_rpc_Status* envoy_api_v2_DeltaDiscoveryRequest_mutable_error_detail(envoy_api_v2_DeltaDiscoveryRequest *msg, upb_arena *arena) {
+  struct google_rpc_Status* sub = (struct google_rpc_Status*)envoy_api_v2_DeltaDiscoveryRequest_error_detail(msg);
+  if (sub == NULL) {
+    sub = (struct google_rpc_Status*)upb_msg_new(&google_rpc_Status_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_DeltaDiscoveryRequest_set_error_detail(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.DeltaDiscoveryRequest.InitialResourceVersionsEntry */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *ret = envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_serialize(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_key(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_value(const envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_set_key(envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry_set_value(envoy_api_v2_DeltaDiscoveryRequest_InitialResourceVersionsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.DeltaDiscoveryResponse */
+
+UPB_INLINE envoy_api_v2_DeltaDiscoveryResponse *envoy_api_v2_DeltaDiscoveryResponse_new(upb_arena *arena) {
+  return (envoy_api_v2_DeltaDiscoveryResponse *)upb_msg_new(&envoy_api_v2_DeltaDiscoveryResponse_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_DeltaDiscoveryResponse *envoy_api_v2_DeltaDiscoveryResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_DeltaDiscoveryResponse *ret = envoy_api_v2_DeltaDiscoveryResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_DeltaDiscoveryResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_DeltaDiscoveryResponse_serialize(const envoy_api_v2_DeltaDiscoveryResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_DeltaDiscoveryResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_system_version_info(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_Resource* const* envoy_api_v2_DeltaDiscoveryResponse_resources(const envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) { return (const envoy_api_v2_Resource* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_type_url(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_DeltaDiscoveryResponse_nonce(const envoy_api_v2_DeltaDiscoveryResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview const* envoy_api_v2_DeltaDiscoveryResponse_removed_resources(const envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_system_version_info(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_Resource** envoy_api_v2_DeltaDiscoveryResponse_mutable_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) {
+  return (envoy_api_v2_Resource**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE envoy_api_v2_Resource** envoy_api_v2_DeltaDiscoveryResponse_resize_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_Resource**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_Resource* envoy_api_v2_DeltaDiscoveryResponse_add_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_arena *arena) {
+  struct envoy_api_v2_Resource* sub = (struct envoy_api_v2_Resource*)upb_msg_new(&envoy_api_v2_Resource_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_type_url(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_DeltaDiscoveryResponse_set_nonce(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryResponse_mutable_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_DeltaDiscoveryResponse_resize_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_DeltaDiscoveryResponse_add_removed_resources(envoy_api_v2_DeltaDiscoveryResponse *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.api.v2.Resource */
+
+UPB_INLINE envoy_api_v2_Resource *envoy_api_v2_Resource_new(upb_arena *arena) {
+  return (envoy_api_v2_Resource *)upb_msg_new(&envoy_api_v2_Resource_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Resource *envoy_api_v2_Resource_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Resource *ret = envoy_api_v2_Resource_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Resource_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Resource_serialize(const envoy_api_v2_Resource *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Resource_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Resource_version(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_Resource_resource(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_Resource_name(const envoy_api_v2_Resource *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_Resource_aliases(const envoy_api_v2_Resource *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+
+UPB_INLINE void envoy_api_v2_Resource_set_version(envoy_api_v2_Resource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_Resource_set_resource(envoy_api_v2_Resource *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_Resource_mutable_resource(envoy_api_v2_Resource *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_Resource_resource(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Resource_set_resource(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Resource_set_name(envoy_api_v2_Resource *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_Resource_mutable_aliases(envoy_api_v2_Resource *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_Resource_resize_aliases(envoy_api_v2_Resource *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_Resource_add_aliases(envoy_api_v2_Resource *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_DISCOVERY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.c
new file mode 100644
index 0000000..58ec5c2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.c	
@@ -0,0 +1,78 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/eds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/eds.upb.h"
+#else
+  #include  "envoy/api/v2/eds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_EdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h
new file mode 100644
index 0000000..e2a66d4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/eds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/eds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_EDS_PROTO_UPB_H_
+#define ENVOY_API_V2_EDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_EdsDummy;
+typedef struct envoy_api_v2_EdsDummy envoy_api_v2_EdsDummy;
+extern const upb_msglayout envoy_api_v2_EdsDummy_msginit;
+
+
+/* envoy.api.v2.EdsDummy */
+
+UPB_INLINE envoy_api_v2_EdsDummy *envoy_api_v2_EdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_EdsDummy *)upb_msg_new(&envoy_api_v2_EdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_EdsDummy *envoy_api_v2_EdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_EdsDummy *ret = envoy_api_v2_EdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_EdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_EdsDummy_serialize(const envoy_api_v2_EdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_EdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_EDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.c
new file mode 100644
index 0000000..d738094
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.c	
@@ -0,0 +1,135 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_ClusterLoadAssignment_submsgs[3] = {
+  &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit,
+  &envoy_api_v2_ClusterLoadAssignment_Policy_msginit,
+  &envoy_api_v2_endpoint_LocalityLbEndpoints_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ClusterLoadAssignment__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 0, 2, 11, 3},
+  {4, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_ClusterLoadAssignment_msginit = {
+  &envoy_api_v2_ClusterLoadAssignment_submsgs[0],
+  &envoy_api_v2_ClusterLoadAssignment__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_ClusterLoadAssignment_Policy_submsgs[3] = {
+  &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ClusterLoadAssignment_Policy__fields[4] = {
+  {2, UPB_SIZE(12, 24), 0, 0, 11, 3},
+  {3, UPB_SIZE(4, 8), 0, 2, 11, 1},
+  {4, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {5, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_msginit = {
+  &envoy_api_v2_ClusterLoadAssignment_Policy_submsgs[0],
+  &envoy_api_v2_ClusterLoadAssignment_Policy__fields[0],
+  UPB_SIZE(16, 32), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_submsgs[1] = {
+  &envoy_type_FractionalPercent_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit = {
+  &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_submsgs[0],
+  &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_submsgs[1] = {
+  &envoy_api_v2_endpoint_Endpoint_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit = {
+  &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_submsgs[0],
+  &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h
new file mode 100644
index 0000000..45c3206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint.upb.h	
@@ -0,0 +1,264 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_ClusterLoadAssignment;
+struct envoy_api_v2_ClusterLoadAssignment_Policy;
+struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload;
+struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry;
+typedef struct envoy_api_v2_ClusterLoadAssignment envoy_api_v2_ClusterLoadAssignment;
+typedef struct envoy_api_v2_ClusterLoadAssignment_Policy envoy_api_v2_ClusterLoadAssignment_Policy;
+typedef struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload;
+typedef struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit;
+extern const upb_msglayout envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit;
+struct envoy_api_v2_endpoint_Endpoint;
+struct envoy_api_v2_endpoint_LocalityLbEndpoints;
+struct envoy_type_FractionalPercent;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LocalityLbEndpoints_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.ClusterLoadAssignment */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment *envoy_api_v2_ClusterLoadAssignment_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment *envoy_api_v2_ClusterLoadAssignment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment *ret = envoy_api_v2_ClusterLoadAssignment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_serialize(const envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_cluster_name(const envoy_api_v2_ClusterLoadAssignment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_LocalityLbEndpoints* const* envoy_api_v2_ClusterLoadAssignment_endpoints(const envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) { return (const struct envoy_api_v2_endpoint_LocalityLbEndpoints* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_Policy* envoy_api_v2_ClusterLoadAssignment_policy(const envoy_api_v2_ClusterLoadAssignment *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_ClusterLoadAssignment_Policy*, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* const* envoy_api_v2_ClusterLoadAssignment_named_endpoints(const envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) { return (const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_set_cluster_name(envoy_api_v2_ClusterLoadAssignment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints** envoy_api_v2_ClusterLoadAssignment_mutable_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) {
+  return (struct envoy_api_v2_endpoint_LocalityLbEndpoints**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints** envoy_api_v2_ClusterLoadAssignment_resize_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_endpoint_LocalityLbEndpoints**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LocalityLbEndpoints* envoy_api_v2_ClusterLoadAssignment_add_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_LocalityLbEndpoints* sub = (struct envoy_api_v2_endpoint_LocalityLbEndpoints*)upb_msg_new(&envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_set_policy(envoy_api_v2_ClusterLoadAssignment *msg, envoy_api_v2_ClusterLoadAssignment_Policy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_ClusterLoadAssignment_Policy*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_Policy* envoy_api_v2_ClusterLoadAssignment_mutable_policy(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_Policy* sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy*)envoy_api_v2_ClusterLoadAssignment_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_set_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry** envoy_api_v2_ClusterLoadAssignment_mutable_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t *len) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry** envoy_api_v2_ClusterLoadAssignment_resize_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* envoy_api_v2_ClusterLoadAssignment_add_named_endpoints(envoy_api_v2_ClusterLoadAssignment *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry* sub = (struct envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.Policy */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy *envoy_api_v2_ClusterLoadAssignment_Policy_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy *envoy_api_v2_ClusterLoadAssignment_Policy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_Policy *ret = envoy_api_v2_ClusterLoadAssignment_Policy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_Policy_serialize(const envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_Policy_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const* envoy_api_v2_ClusterLoadAssignment_Policy_drop_overloads(const envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t *len) { return (const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_ClusterLoadAssignment_Policy_overprovisioning_factor(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_ClusterLoadAssignment_Policy_endpoint_stale_after(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_ClusterLoadAssignment_Policy_disable_overprovisioning(const envoy_api_v2_ClusterLoadAssignment_Policy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload** envoy_api_v2_ClusterLoadAssignment_Policy_mutable_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t *len) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload** envoy_api_v2_ClusterLoadAssignment_Policy_resize_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* envoy_api_v2_ClusterLoadAssignment_Policy_add_drop_overloads(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload* sub = (struct envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload*)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_overprovisioning_factor(envoy_api_v2_ClusterLoadAssignment_Policy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_ClusterLoadAssignment_Policy_mutable_overprovisioning_factor(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_ClusterLoadAssignment_Policy_overprovisioning_factor(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_set_overprovisioning_factor(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_endpoint_stale_after(envoy_api_v2_ClusterLoadAssignment_Policy *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_ClusterLoadAssignment_Policy_mutable_endpoint_stale_after(envoy_api_v2_ClusterLoadAssignment_Policy *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_ClusterLoadAssignment_Policy_endpoint_stale_after(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_set_endpoint_stale_after(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_set_disable_overprovisioning(envoy_api_v2_ClusterLoadAssignment_Policy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.Policy.DropOverload */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *ret = envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_serialize(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_category(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(const envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_category(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_drop_percentage(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_mutable_drop_percentage(envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_drop_percentage(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_Policy_DropOverload_set_drop_percentage(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.ClusterLoadAssignment.NamedEndpointsEntry */
+
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *)upb_msg_new(&envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *ret = envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_serialize(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_key(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_value(const envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_key(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_value(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, struct envoy_api_v2_endpoint_Endpoint* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_mutable_value(envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint* sub = (struct envoy_api_v2_endpoint_Endpoint*)envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ClusterLoadAssignment_NamedEndpointsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.c
new file mode 100644
index 0000000..3fbe9c8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h
new file mode 100644
index 0000000..9dad1db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_ENDPOINT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.c
new file mode 100644
index 0000000..843bacb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.c	
@@ -0,0 +1,128 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/endpoint_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/health_check.upb.h"
+#else
+  #include  "envoy/api/v2/core/health_check.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_endpoint_Endpoint_submsgs[2] = {
+  &envoy_api_v2_core_Address_msginit,
+  &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_Endpoint__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_Endpoint_msginit = {
+  &envoy_api_v2_endpoint_Endpoint_submsgs[0],
+  &envoy_api_v2_endpoint_Endpoint__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_Endpoint_HealthCheckConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit = {
+  NULL,
+  &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig__fields[0],
+  UPB_SIZE(4, 4), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_endpoint_LbEndpoint_submsgs[3] = {
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_endpoint_Endpoint_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_LbEndpoint__fields[5] = {
+  {1, UPB_SIZE(16, 24), UPB_SIZE(-25, -41), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 11, 1},
+  {4, UPB_SIZE(12, 16), 0, 2, 11, 1},
+  {5, UPB_SIZE(16, 24), UPB_SIZE(-25, -41), 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_LbEndpoint_msginit = {
+  &envoy_api_v2_endpoint_LbEndpoint_submsgs[0],
+  &envoy_api_v2_endpoint_LbEndpoint__fields[0],
+  UPB_SIZE(32, 48), 5, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_endpoint_LocalityLbEndpoints_submsgs[4] = {
+  &envoy_api_v2_core_Locality_msginit,
+  &envoy_api_v2_endpoint_LbEndpoint_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_LocalityLbEndpoints__fields[5] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {2, UPB_SIZE(16, 32), 0, 1, 11, 3},
+  {3, UPB_SIZE(8, 16), 0, 2, 11, 1},
+  {5, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {6, UPB_SIZE(12, 24), 0, 2, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_LocalityLbEndpoints_msginit = {
+  &envoy_api_v2_endpoint_LocalityLbEndpoints_submsgs[0],
+  &envoy_api_v2_endpoint_LocalityLbEndpoints__fields[0],
+  UPB_SIZE(20, 40), 5, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h
new file mode 100644
index 0000000..cb9a9b5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/endpoint_components.upb.h	
@@ -0,0 +1,282 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/endpoint_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_endpoint_Endpoint;
+struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig;
+struct envoy_api_v2_endpoint_LbEndpoint;
+struct envoy_api_v2_endpoint_LocalityLbEndpoints;
+typedef struct envoy_api_v2_endpoint_Endpoint envoy_api_v2_endpoint_Endpoint;
+typedef struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig envoy_api_v2_endpoint_Endpoint_HealthCheckConfig;
+typedef struct envoy_api_v2_endpoint_LbEndpoint envoy_api_v2_endpoint_LbEndpoint;
+typedef struct envoy_api_v2_endpoint_LocalityLbEndpoints envoy_api_v2_endpoint_LocalityLbEndpoints;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LbEndpoint_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_LocalityLbEndpoints_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Locality;
+struct envoy_api_v2_core_Metadata;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.api.v2.endpoint.Endpoint */
+
+UPB_INLINE envoy_api_v2_endpoint_Endpoint *envoy_api_v2_endpoint_Endpoint_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_Endpoint *)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_Endpoint *envoy_api_v2_endpoint_Endpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_Endpoint *ret = envoy_api_v2_endpoint_Endpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_Endpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_Endpoint_serialize(const envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_Endpoint_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_Endpoint_address(const envoy_api_v2_endpoint_Endpoint *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* envoy_api_v2_endpoint_Endpoint_health_check_config(const envoy_api_v2_endpoint_Endpoint *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_set_address(envoy_api_v2_endpoint_Endpoint *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_Endpoint_mutable_address(envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_endpoint_Endpoint_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_Endpoint_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_set_health_check_config(envoy_api_v2_endpoint_Endpoint *msg, envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* envoy_api_v2_endpoint_Endpoint_mutable_health_check_config(envoy_api_v2_endpoint_Endpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig* sub = (struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*)envoy_api_v2_endpoint_Endpoint_health_check_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint_HealthCheckConfig*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_Endpoint_set_health_check_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.endpoint.Endpoint.HealthCheckConfig */
+
+UPB_INLINE envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *ret = envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_serialize(const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_port_value(const envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_Endpoint_HealthCheckConfig_set_port_value(envoy_api_v2_endpoint_Endpoint_HealthCheckConfig *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.endpoint.LbEndpoint */
+
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint *envoy_api_v2_endpoint_LbEndpoint_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LbEndpoint *)upb_msg_new(&envoy_api_v2_endpoint_LbEndpoint_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint *envoy_api_v2_endpoint_LbEndpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_LbEndpoint *ret = envoy_api_v2_endpoint_LbEndpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_LbEndpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_LbEndpoint_serialize(const envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_LbEndpoint_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_endpoint = 1,
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_endpoint_name = 5,
+  envoy_api_v2_endpoint_LbEndpoint_host_identifier_NOT_SET = 0
+} envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases;
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases envoy_api_v2_endpoint_LbEndpoint_host_identifier_case(const envoy_api_v2_endpoint_LbEndpoint* msg) { return (envoy_api_v2_endpoint_LbEndpoint_host_identifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 40)); }
+
+UPB_INLINE bool envoy_api_v2_endpoint_LbEndpoint_has_endpoint(const envoy_api_v2_endpoint_LbEndpoint *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 40), 1); }
+UPB_INLINE const envoy_api_v2_endpoint_Endpoint* envoy_api_v2_endpoint_LbEndpoint_endpoint(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(16, 24), UPB_SIZE(24, 40), 1, NULL); }
+UPB_INLINE int32_t envoy_api_v2_endpoint_LbEndpoint_health_status(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_endpoint_LbEndpoint_metadata(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LbEndpoint_load_balancing_weight(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)); }
+UPB_INLINE bool envoy_api_v2_endpoint_LbEndpoint_has_endpoint_name(const envoy_api_v2_endpoint_LbEndpoint *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 40), 5); }
+UPB_INLINE upb_strview envoy_api_v2_endpoint_LbEndpoint_endpoint_name(const envoy_api_v2_endpoint_LbEndpoint *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(16, 24), UPB_SIZE(24, 40), 5, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_endpoint(envoy_api_v2_endpoint_LbEndpoint *msg, envoy_api_v2_endpoint_Endpoint* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_endpoint_Endpoint*, UPB_SIZE(16, 24), value, UPB_SIZE(24, 40), 1);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_Endpoint* envoy_api_v2_endpoint_LbEndpoint_mutable_endpoint(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_Endpoint* sub = (struct envoy_api_v2_endpoint_Endpoint*)envoy_api_v2_endpoint_LbEndpoint_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_endpoint_Endpoint*)upb_msg_new(&envoy_api_v2_endpoint_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_health_status(envoy_api_v2_endpoint_LbEndpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_metadata(envoy_api_v2_endpoint_LbEndpoint *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_endpoint_LbEndpoint_mutable_metadata(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_endpoint_LbEndpoint_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_load_balancing_weight(envoy_api_v2_endpoint_LbEndpoint *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LbEndpoint_mutable_load_balancing_weight(envoy_api_v2_endpoint_LbEndpoint *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LbEndpoint_load_balancing_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LbEndpoint_set_load_balancing_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LbEndpoint_set_endpoint_name(envoy_api_v2_endpoint_LbEndpoint *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(16, 24), value, UPB_SIZE(24, 40), 5);
+}
+
+/* envoy.api.v2.endpoint.LocalityLbEndpoints */
+
+UPB_INLINE envoy_api_v2_endpoint_LocalityLbEndpoints *envoy_api_v2_endpoint_LocalityLbEndpoints_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LocalityLbEndpoints *)upb_msg_new(&envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_LocalityLbEndpoints *envoy_api_v2_endpoint_LocalityLbEndpoints_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_LocalityLbEndpoints *ret = envoy_api_v2_endpoint_LocalityLbEndpoints_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_LocalityLbEndpoints_serialize(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_LocalityLbEndpoints_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_LocalityLbEndpoints_locality(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Locality*, UPB_SIZE(4, 8)); }
+UPB_INLINE const envoy_api_v2_endpoint_LbEndpoint* const* envoy_api_v2_endpoint_LocalityLbEndpoints_lb_endpoints(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t *len) { return (const envoy_api_v2_endpoint_LbEndpoint* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE uint32_t envoy_api_v2_endpoint_LocalityLbEndpoints_priority(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_proximity(const envoy_api_v2_endpoint_LocalityLbEndpoints *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_locality(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Locality*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_locality(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_endpoint_LocalityLbEndpoints_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint** envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_LbEndpoint**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_LbEndpoint** envoy_api_v2_endpoint_LocalityLbEndpoints_resize_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_LbEndpoint**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_LbEndpoint* envoy_api_v2_endpoint_LocalityLbEndpoints_add_lb_endpoints(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_LbEndpoint* sub = (struct envoy_api_v2_endpoint_LbEndpoint*)upb_msg_new(&envoy_api_v2_endpoint_LbEndpoint_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_load_balancing_weight(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_load_balancing_weight(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LocalityLbEndpoints_load_balancing_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_load_balancing_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_priority(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_LocalityLbEndpoints_set_proximity(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_endpoint_LocalityLbEndpoints_mutable_proximity(envoy_api_v2_endpoint_LocalityLbEndpoints *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_endpoint_LocalityLbEndpoints_proximity(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_LocalityLbEndpoints_set_proximity(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_ENDPOINT_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.c
new file mode 100644
index 0000000..a1b1fd7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.c	
@@ -0,0 +1,151 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/load_report.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_endpoint_UpstreamLocalityStats_submsgs[3] = {
+  &envoy_api_v2_core_Locality_msginit,
+  &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit,
+  &envoy_api_v2_endpoint_UpstreamEndpointStats_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_UpstreamLocalityStats__fields[8] = {
+  {1, UPB_SIZE(36, 40), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 4, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 4, 1},
+  {4, UPB_SIZE(16, 16), 0, 0, 4, 1},
+  {5, UPB_SIZE(40, 48), 0, 1, 11, 3},
+  {6, UPB_SIZE(32, 32), 0, 0, 13, 1},
+  {7, UPB_SIZE(44, 56), 0, 2, 11, 3},
+  {8, UPB_SIZE(24, 24), 0, 0, 4, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_UpstreamLocalityStats_msginit = {
+  &envoy_api_v2_endpoint_UpstreamLocalityStats_submsgs[0],
+  &envoy_api_v2_endpoint_UpstreamLocalityStats__fields[0],
+  UPB_SIZE(48, 64), 8, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_endpoint_UpstreamEndpointStats_submsgs[3] = {
+  &envoy_api_v2_core_Address_msginit,
+  &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_UpstreamEndpointStats__fields[7] = {
+  {1, UPB_SIZE(32, 32), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 4, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 4, 1},
+  {4, UPB_SIZE(16, 16), 0, 0, 4, 1},
+  {5, UPB_SIZE(40, 48), 0, 1, 11, 3},
+  {6, UPB_SIZE(36, 40), 0, 2, 11, 1},
+  {7, UPB_SIZE(24, 24), 0, 0, 4, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_UpstreamEndpointStats_msginit = {
+  &envoy_api_v2_endpoint_UpstreamEndpointStats_submsgs[0],
+  &envoy_api_v2_endpoint_UpstreamEndpointStats__fields[0],
+  UPB_SIZE(48, 56), 7, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_EndpointLoadMetricStats__fields[3] = {
+  {1, UPB_SIZE(16, 16), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 4, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 1, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit = {
+  NULL,
+  &envoy_api_v2_endpoint_EndpointLoadMetricStats__fields[0],
+  UPB_SIZE(24, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_endpoint_ClusterStats_submsgs[3] = {
+  &envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit,
+  &envoy_api_v2_endpoint_UpstreamLocalityStats_msginit,
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_ClusterStats__fields[6] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(28, 48), 0, 1, 11, 3},
+  {3, UPB_SIZE(0, 0), 0, 0, 4, 1},
+  {4, UPB_SIZE(24, 40), 0, 2, 11, 1},
+  {5, UPB_SIZE(32, 56), 0, 0, 11, 3},
+  {6, UPB_SIZE(16, 24), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_ClusterStats_msginit = {
+  &envoy_api_v2_endpoint_ClusterStats_submsgs[0],
+  &envoy_api_v2_endpoint_ClusterStats__fields[0],
+  UPB_SIZE(40, 64), 6, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_endpoint_ClusterStats_DroppedRequests__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 4, 1},
+};
+
+const upb_msglayout envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit = {
+  NULL,
+  &envoy_api_v2_endpoint_ClusterStats_DroppedRequests__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h
new file mode 100644
index 0000000..9d90ec3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h	
@@ -0,0 +1,348 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/endpoint/load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_
+#define ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_endpoint_UpstreamLocalityStats;
+struct envoy_api_v2_endpoint_UpstreamEndpointStats;
+struct envoy_api_v2_endpoint_EndpointLoadMetricStats;
+struct envoy_api_v2_endpoint_ClusterStats;
+struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests;
+typedef struct envoy_api_v2_endpoint_UpstreamLocalityStats envoy_api_v2_endpoint_UpstreamLocalityStats;
+typedef struct envoy_api_v2_endpoint_UpstreamEndpointStats envoy_api_v2_endpoint_UpstreamEndpointStats;
+typedef struct envoy_api_v2_endpoint_EndpointLoadMetricStats envoy_api_v2_endpoint_EndpointLoadMetricStats;
+typedef struct envoy_api_v2_endpoint_ClusterStats envoy_api_v2_endpoint_ClusterStats;
+typedef struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests envoy_api_v2_endpoint_ClusterStats_DroppedRequests;
+extern const upb_msglayout envoy_api_v2_endpoint_UpstreamLocalityStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_UpstreamEndpointStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Locality;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Locality_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.endpoint.UpstreamLocalityStats */
+
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats *envoy_api_v2_endpoint_UpstreamLocalityStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats *)upb_msg_new(&envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats *envoy_api_v2_endpoint_UpstreamLocalityStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_UpstreamLocalityStats *ret = envoy_api_v2_endpoint_UpstreamLocalityStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_UpstreamLocalityStats_serialize(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_UpstreamLocalityStats_locality(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Locality*, UPB_SIZE(36, 40)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_successful_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_requests_in_progress(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_error_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_endpoint_EndpointLoadMetricStats* const* envoy_api_v2_endpoint_UpstreamLocalityStats_load_metric_stats(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_EndpointLoadMetricStats* const*)_upb_array_accessor(msg, UPB_SIZE(40, 48), len); }
+UPB_INLINE uint32_t envoy_api_v2_endpoint_UpstreamLocalityStats_priority(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(32, 32)); }
+UPB_INLINE const envoy_api_v2_endpoint_UpstreamEndpointStats* const* envoy_api_v2_endpoint_UpstreamLocalityStats_upstream_endpoint_stats(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_UpstreamEndpointStats* const*)_upb_array_accessor(msg, UPB_SIZE(44, 56), len); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamLocalityStats_total_issued_requests(const envoy_api_v2_endpoint_UpstreamLocalityStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_locality(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, struct envoy_api_v2_core_Locality* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Locality*, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Locality* envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_locality(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Locality* sub = (struct envoy_api_v2_core_Locality*)envoy_api_v2_endpoint_UpstreamLocalityStats_locality(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Locality*)upb_msg_new(&envoy_api_v2_core_Locality_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamLocalityStats_set_locality(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_successful_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_requests_in_progress(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_error_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamLocalityStats_resize_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_EndpointLoadMetricStats* envoy_api_v2_endpoint_UpstreamLocalityStats_add_load_metric_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_EndpointLoadMetricStats* sub = (struct envoy_api_v2_endpoint_EndpointLoadMetricStats*)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_priority(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats** envoy_api_v2_endpoint_UpstreamLocalityStats_mutable_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 56), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats** envoy_api_v2_endpoint_UpstreamLocalityStats_resize_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_UpstreamEndpointStats* envoy_api_v2_endpoint_UpstreamLocalityStats_add_upstream_endpoint_stats(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_UpstreamEndpointStats* sub = (struct envoy_api_v2_endpoint_UpstreamEndpointStats*)upb_msg_new(&envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamLocalityStats_set_total_issued_requests(envoy_api_v2_endpoint_UpstreamLocalityStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.UpstreamEndpointStats */
+
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats *envoy_api_v2_endpoint_UpstreamEndpointStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamEndpointStats *)upb_msg_new(&envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamEndpointStats *envoy_api_v2_endpoint_UpstreamEndpointStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_UpstreamEndpointStats *ret = envoy_api_v2_endpoint_UpstreamEndpointStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_UpstreamEndpointStats_serialize(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_UpstreamEndpointStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_UpstreamEndpointStats_address(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(32, 32)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_successful_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_requests_in_progress(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_error_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_endpoint_EndpointLoadMetricStats* const* envoy_api_v2_endpoint_UpstreamEndpointStats_load_metric_stats(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_EndpointLoadMetricStats* const*)_upb_array_accessor(msg, UPB_SIZE(40, 48), len); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_endpoint_UpstreamEndpointStats_metadata(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(36, 40)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_UpstreamEndpointStats_total_issued_requests(const envoy_api_v2_endpoint_UpstreamEndpointStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_address(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_address(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_endpoint_UpstreamEndpointStats_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamEndpointStats_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_successful_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_requests_in_progress(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_error_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats** envoy_api_v2_endpoint_UpstreamEndpointStats_resize_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_EndpointLoadMetricStats* envoy_api_v2_endpoint_UpstreamEndpointStats_add_load_metric_stats(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_EndpointLoadMetricStats* sub = (struct envoy_api_v2_endpoint_EndpointLoadMetricStats*)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_metadata(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_endpoint_UpstreamEndpointStats_mutable_metadata(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_endpoint_UpstreamEndpointStats_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_UpstreamEndpointStats_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_UpstreamEndpointStats_set_total_issued_requests(envoy_api_v2_endpoint_UpstreamEndpointStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.EndpointLoadMetricStats */
+
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats *envoy_api_v2_endpoint_EndpointLoadMetricStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_EndpointLoadMetricStats *)upb_msg_new(&envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_EndpointLoadMetricStats *envoy_api_v2_endpoint_EndpointLoadMetricStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_EndpointLoadMetricStats *ret = envoy_api_v2_endpoint_EndpointLoadMetricStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_EndpointLoadMetricStats_serialize(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_EndpointLoadMetricStats_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_EndpointLoadMetricStats_metric_name(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_EndpointLoadMetricStats_num_requests_finished_with_metric(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE double envoy_api_v2_endpoint_EndpointLoadMetricStats_total_metric_value(const envoy_api_v2_endpoint_EndpointLoadMetricStats *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_metric_name(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_num_requests_finished_with_metric(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_EndpointLoadMetricStats_set_total_metric_value(envoy_api_v2_endpoint_EndpointLoadMetricStats *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.endpoint.ClusterStats */
+
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats *envoy_api_v2_endpoint_ClusterStats_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats *)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats *envoy_api_v2_endpoint_ClusterStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_ClusterStats *ret = envoy_api_v2_endpoint_ClusterStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_ClusterStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_ClusterStats_serialize(const envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_ClusterStats_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_cluster_name(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_api_v2_endpoint_UpstreamLocalityStats* const* envoy_api_v2_endpoint_ClusterStats_upstream_locality_stats(const envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_UpstreamLocalityStats* const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_ClusterStats_total_dropped_requests(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_endpoint_ClusterStats_load_report_interval(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_endpoint_ClusterStats_DroppedRequests* const* envoy_api_v2_endpoint_ClusterStats_dropped_requests(const envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) { return (const envoy_api_v2_endpoint_ClusterStats_DroppedRequests* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_cluster_service_name(const envoy_api_v2_endpoint_ClusterStats *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_cluster_name(envoy_api_v2_endpoint_ClusterStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats** envoy_api_v2_endpoint_ClusterStats_mutable_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_UpstreamLocalityStats** envoy_api_v2_endpoint_ClusterStats_resize_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_UpstreamLocalityStats**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_UpstreamLocalityStats* envoy_api_v2_endpoint_ClusterStats_add_upstream_locality_stats(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_UpstreamLocalityStats* sub = (struct envoy_api_v2_endpoint_UpstreamLocalityStats*)upb_msg_new(&envoy_api_v2_endpoint_UpstreamLocalityStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_total_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_load_report_interval(envoy_api_v2_endpoint_ClusterStats *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_endpoint_ClusterStats_mutable_load_report_interval(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_endpoint_ClusterStats_load_report_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_endpoint_ClusterStats_set_load_report_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests** envoy_api_v2_endpoint_ClusterStats_mutable_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, size_t *len) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests** envoy_api_v2_endpoint_ClusterStats_resize_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests* envoy_api_v2_endpoint_ClusterStats_add_dropped_requests(envoy_api_v2_endpoint_ClusterStats *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests* sub = (struct envoy_api_v2_endpoint_ClusterStats_DroppedRequests*)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_set_cluster_service_name(envoy_api_v2_endpoint_ClusterStats *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+
+/* envoy.api.v2.endpoint.ClusterStats.DroppedRequests */
+
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_new(upb_arena *arena) {
+  return (envoy_api_v2_endpoint_ClusterStats_DroppedRequests *)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_endpoint_ClusterStats_DroppedRequests *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_endpoint_ClusterStats_DroppedRequests *ret = envoy_api_v2_endpoint_ClusterStats_DroppedRequests_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_endpoint_ClusterStats_DroppedRequests_serialize(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_endpoint_ClusterStats_DroppedRequests_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_endpoint_ClusterStats_DroppedRequests_category(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t envoy_api_v2_endpoint_ClusterStats_DroppedRequests_dropped_count(const envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_category(envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_endpoint_ClusterStats_DroppedRequests_set_dropped_count(envoy_api_v2_endpoint_ClusterStats_DroppedRequests *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ENDPOINT_LOAD_REPORT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.c
new file mode 100644
index 0000000..56f4c3e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.c	
@@ -0,0 +1,78 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/lds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/lds.upb.h"
+#else
+  #include  "envoy/api/v2/lds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener.upb.h"
+#else
+  #include  "envoy/api/v2/listener.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_LdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h
new file mode 100644
index 0000000..c373290
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/lds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/lds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LDS_PROTO_UPB_H_
+#define ENVOY_API_V2_LDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener.upb.h"
+#else
+  #include  "envoy/api/v2/listener.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_LdsDummy;
+typedef struct envoy_api_v2_LdsDummy envoy_api_v2_LdsDummy;
+extern const upb_msglayout envoy_api_v2_LdsDummy_msginit;
+
+
+/* envoy.api.v2.LdsDummy */
+
+UPB_INLINE envoy_api_v2_LdsDummy *envoy_api_v2_LdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_LdsDummy *)upb_msg_new(&envoy_api_v2_LdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_LdsDummy *envoy_api_v2_LdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_LdsDummy *ret = envoy_api_v2_LdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_LdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_LdsDummy_serialize(const envoy_api_v2_LdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_LdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.c
new file mode 100644
index 0000000..118801b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.c	
@@ -0,0 +1,160 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener.upb.h"
+#else
+  #include  "envoy/api/v2/listener.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h"
+#else
+  #include  "envoy/api/v2/listener/udp_listener_config.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h"
+#else
+  #include  "envoy/config/listener/v2/api_listener.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_Listener_submsgs[15] = {
+  &envoy_api_v2_Listener_ConnectionBalanceConfig_msginit,
+  &envoy_api_v2_Listener_DeprecatedV1_msginit,
+  &envoy_api_v2_core_Address_msginit,
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_core_SocketOption_msginit,
+  &envoy_api_v2_listener_FilterChain_msginit,
+  &envoy_api_v2_listener_ListenerFilter_msginit,
+  &envoy_api_v2_listener_UdpListenerConfig_msginit,
+  &envoy_config_listener_v2_ApiListener_msginit,
+  &google_protobuf_BoolValue_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Listener__fields[20] = {
+  {1, UPB_SIZE(20, 24), 0, 0, 9, 1},
+  {2, UPB_SIZE(28, 40), 0, 2, 11, 1},
+  {3, UPB_SIZE(76, 136), 0, 5, 11, 3},
+  {4, UPB_SIZE(32, 48), 0, 9, 11, 1},
+  {5, UPB_SIZE(36, 56), 0, 11, 11, 1},
+  {6, UPB_SIZE(40, 64), 0, 3, 11, 1},
+  {7, UPB_SIZE(44, 72), 0, 1, 11, 1},
+  {8, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {9, UPB_SIZE(80, 144), 0, 6, 11, 3},
+  {10, UPB_SIZE(48, 80), 0, 9, 11, 1},
+  {11, UPB_SIZE(52, 88), 0, 9, 11, 1},
+  {12, UPB_SIZE(56, 96), 0, 11, 11, 1},
+  {13, UPB_SIZE(84, 152), 0, 4, 11, 3},
+  {15, UPB_SIZE(60, 104), 0, 10, 11, 1},
+  {16, UPB_SIZE(8, 8), 0, 0, 14, 1},
+  {17, UPB_SIZE(16, 16), 0, 0, 8, 1},
+  {18, UPB_SIZE(64, 112), 0, 7, 11, 1},
+  {19, UPB_SIZE(68, 120), 0, 8, 11, 1},
+  {20, UPB_SIZE(72, 128), 0, 0, 11, 1},
+  {21, UPB_SIZE(17, 17), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_Listener_msginit = {
+  &envoy_api_v2_Listener_submsgs[0],
+  &envoy_api_v2_Listener__fields[0],
+  UPB_SIZE(88, 160), 20, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Listener_DeprecatedV1_submsgs[1] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Listener_DeprecatedV1__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Listener_DeprecatedV1_msginit = {
+  &envoy_api_v2_Listener_DeprecatedV1_submsgs[0],
+  &envoy_api_v2_Listener_DeprecatedV1__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Listener_ConnectionBalanceConfig_submsgs[1] = {
+  &envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Listener_ConnectionBalanceConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_msginit = {
+  &envoy_api_v2_Listener_ConnectionBalanceConfig_submsgs[0],
+  &envoy_api_v2_Listener_ConnectionBalanceConfig__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h
new file mode 100644
index 0000000..be53b58
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener.upb.h	
@@ -0,0 +1,407 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_Listener;
+struct envoy_api_v2_Listener_DeprecatedV1;
+struct envoy_api_v2_Listener_ConnectionBalanceConfig;
+struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance;
+typedef struct envoy_api_v2_Listener envoy_api_v2_Listener;
+typedef struct envoy_api_v2_Listener_DeprecatedV1 envoy_api_v2_Listener_DeprecatedV1;
+typedef struct envoy_api_v2_Listener_ConnectionBalanceConfig envoy_api_v2_Listener_ConnectionBalanceConfig;
+typedef struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance;
+extern const upb_msglayout envoy_api_v2_Listener_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_DeprecatedV1_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_msginit;
+extern const upb_msglayout envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit;
+struct envoy_api_v2_core_Address;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_SocketOption;
+struct envoy_api_v2_listener_FilterChain;
+struct envoy_api_v2_listener_ListenerFilter;
+struct envoy_api_v2_listener_UdpListenerConfig;
+struct envoy_config_listener_v2_ApiListener;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_Address_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_SocketOption_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChain_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilter_msginit;
+extern const upb_msglayout envoy_api_v2_listener_UdpListenerConfig_msginit;
+extern const upb_msglayout envoy_config_listener_v2_ApiListener_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_Listener_DEFAULT = 0,
+  envoy_api_v2_Listener_MODIFY_ONLY = 1
+} envoy_api_v2_Listener_DrainType;
+
+
+/* envoy.api.v2.Listener */
+
+UPB_INLINE envoy_api_v2_Listener *envoy_api_v2_Listener_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener *)upb_msg_new(&envoy_api_v2_Listener_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener *envoy_api_v2_Listener_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener *ret = envoy_api_v2_Listener_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_serialize(const envoy_api_v2_Listener *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_Listener_name(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_Address* envoy_api_v2_Listener_address(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Address*, UPB_SIZE(28, 40)); }
+UPB_INLINE const struct envoy_api_v2_listener_FilterChain* const* envoy_api_v2_Listener_filter_chains(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_listener_FilterChain* const*)_upb_array_accessor(msg, UPB_SIZE(76, 136), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_use_original_dst(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(32, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Listener_per_connection_buffer_limit_bytes(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(36, 56)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_Listener_metadata(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(40, 64)); }
+UPB_INLINE const envoy_api_v2_Listener_DeprecatedV1* envoy_api_v2_Listener_deprecated_v1(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Listener_DeprecatedV1*, UPB_SIZE(44, 72)); }
+UPB_INLINE int32_t envoy_api_v2_Listener_drain_type(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_listener_ListenerFilter* const* envoy_api_v2_Listener_listener_filters(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_listener_ListenerFilter* const*)_upb_array_accessor(msg, UPB_SIZE(80, 144), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_transparent(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(48, 80)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_freebind(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(52, 88)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_Listener_tcp_fast_open_queue_length(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(56, 96)); }
+UPB_INLINE const struct envoy_api_v2_core_SocketOption* const* envoy_api_v2_Listener_socket_options(const envoy_api_v2_Listener *msg, size_t *len) { return (const struct envoy_api_v2_core_SocketOption* const*)_upb_array_accessor(msg, UPB_SIZE(84, 152), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_Listener_listener_filters_timeout(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 104)); }
+UPB_INLINE int32_t envoy_api_v2_Listener_traffic_direction(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool envoy_api_v2_Listener_continue_on_listener_filters_timeout(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE const struct envoy_api_v2_listener_UdpListenerConfig* envoy_api_v2_Listener_udp_listener_config(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_listener_UdpListenerConfig*, UPB_SIZE(64, 112)); }
+UPB_INLINE const struct envoy_config_listener_v2_ApiListener* envoy_api_v2_Listener_api_listener(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const struct envoy_config_listener_v2_ApiListener*, UPB_SIZE(68, 120)); }
+UPB_INLINE const envoy_api_v2_Listener_ConnectionBalanceConfig* envoy_api_v2_Listener_connection_balance_config(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Listener_ConnectionBalanceConfig*, UPB_SIZE(72, 128)); }
+UPB_INLINE bool envoy_api_v2_Listener_reuse_port(const envoy_api_v2_Listener *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)); }
+
+UPB_INLINE void envoy_api_v2_Listener_set_name(envoy_api_v2_Listener *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_address(envoy_api_v2_Listener *msg, struct envoy_api_v2_core_Address* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Address*, UPB_SIZE(28, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Address* envoy_api_v2_Listener_mutable_address(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Address* sub = (struct envoy_api_v2_core_Address*)envoy_api_v2_Listener_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Address*)upb_msg_new(&envoy_api_v2_core_Address_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain** envoy_api_v2_Listener_mutable_filter_chains(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_listener_FilterChain**)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 136), len);
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain** envoy_api_v2_Listener_resize_filter_chains(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_listener_FilterChain**)_upb_array_resize_accessor(msg, UPB_SIZE(76, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChain* envoy_api_v2_Listener_add_filter_chains(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_FilterChain* sub = (struct envoy_api_v2_listener_FilterChain*)upb_msg_new(&envoy_api_v2_listener_FilterChain_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_use_original_dst(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(32, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_use_original_dst(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_use_original_dst(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_use_original_dst(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_per_connection_buffer_limit_bytes(envoy_api_v2_Listener *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(36, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Listener_mutable_per_connection_buffer_limit_bytes(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Listener_per_connection_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_per_connection_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_metadata(envoy_api_v2_Listener *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(40, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_Listener_mutable_metadata(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_Listener_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_deprecated_v1(envoy_api_v2_Listener *msg, envoy_api_v2_Listener_DeprecatedV1* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Listener_DeprecatedV1*, UPB_SIZE(44, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Listener_DeprecatedV1* envoy_api_v2_Listener_mutable_deprecated_v1(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_DeprecatedV1* sub = (struct envoy_api_v2_Listener_DeprecatedV1*)envoy_api_v2_Listener_deprecated_v1(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_DeprecatedV1*)upb_msg_new(&envoy_api_v2_Listener_DeprecatedV1_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_deprecated_v1(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_drain_type(envoy_api_v2_Listener *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter** envoy_api_v2_Listener_mutable_listener_filters(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_listener_ListenerFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(80, 144), len);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter** envoy_api_v2_Listener_resize_listener_filters(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_listener_ListenerFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(80, 144), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilter* envoy_api_v2_Listener_add_listener_filters(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilter* sub = (struct envoy_api_v2_listener_ListenerFilter*)upb_msg_new(&envoy_api_v2_listener_ListenerFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(80, 144), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_transparent(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(48, 80)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_transparent(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_transparent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_transparent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_freebind(envoy_api_v2_Listener *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(52, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_mutable_freebind(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_freebind(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_freebind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_tcp_fast_open_queue_length(envoy_api_v2_Listener *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(56, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_Listener_mutable_tcp_fast_open_queue_length(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_Listener_tcp_fast_open_queue_length(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_tcp_fast_open_queue_length(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_Listener_mutable_socket_options(envoy_api_v2_Listener *msg, size_t *len) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(84, 152), len);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption** envoy_api_v2_Listener_resize_socket_options(envoy_api_v2_Listener *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_SocketOption**)_upb_array_resize_accessor(msg, UPB_SIZE(84, 152), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_SocketOption* envoy_api_v2_Listener_add_socket_options(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_SocketOption* sub = (struct envoy_api_v2_core_SocketOption*)upb_msg_new(&envoy_api_v2_core_SocketOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(84, 152), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_listener_filters_timeout(envoy_api_v2_Listener *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 104)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_Listener_mutable_listener_filters_timeout(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_Listener_listener_filters_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_listener_filters_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_traffic_direction(envoy_api_v2_Listener *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_continue_on_listener_filters_timeout(envoy_api_v2_Listener *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_udp_listener_config(envoy_api_v2_Listener *msg, struct envoy_api_v2_listener_UdpListenerConfig* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_listener_UdpListenerConfig*, UPB_SIZE(64, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_UdpListenerConfig* envoy_api_v2_Listener_mutable_udp_listener_config(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_UdpListenerConfig* sub = (struct envoy_api_v2_listener_UdpListenerConfig*)envoy_api_v2_Listener_udp_listener_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_UdpListenerConfig*)upb_msg_new(&envoy_api_v2_listener_UdpListenerConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_udp_listener_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_api_listener(envoy_api_v2_Listener *msg, struct envoy_config_listener_v2_ApiListener* value) {
+  UPB_FIELD_AT(msg, struct envoy_config_listener_v2_ApiListener*, UPB_SIZE(68, 120)) = value;
+}
+UPB_INLINE struct envoy_config_listener_v2_ApiListener* envoy_api_v2_Listener_mutable_api_listener(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_config_listener_v2_ApiListener* sub = (struct envoy_config_listener_v2_ApiListener*)envoy_api_v2_Listener_api_listener(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_listener_v2_ApiListener*)upb_msg_new(&envoy_config_listener_v2_ApiListener_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_api_listener(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_connection_balance_config(envoy_api_v2_Listener *msg, envoy_api_v2_Listener_ConnectionBalanceConfig* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Listener_ConnectionBalanceConfig*, UPB_SIZE(72, 128)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Listener_ConnectionBalanceConfig* envoy_api_v2_Listener_mutable_connection_balance_config(envoy_api_v2_Listener *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_ConnectionBalanceConfig* sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig*)envoy_api_v2_Listener_connection_balance_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig*)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_set_connection_balance_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_Listener_set_reuse_port(envoy_api_v2_Listener *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)) = value;
+}
+
+/* envoy.api.v2.Listener.DeprecatedV1 */
+
+UPB_INLINE envoy_api_v2_Listener_DeprecatedV1 *envoy_api_v2_Listener_DeprecatedV1_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_DeprecatedV1 *)upb_msg_new(&envoy_api_v2_Listener_DeprecatedV1_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_DeprecatedV1 *envoy_api_v2_Listener_DeprecatedV1_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_DeprecatedV1 *ret = envoy_api_v2_Listener_DeprecatedV1_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_DeprecatedV1_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_DeprecatedV1_serialize(const envoy_api_v2_Listener_DeprecatedV1 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_DeprecatedV1_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_Listener_DeprecatedV1_bind_to_port(const envoy_api_v2_Listener_DeprecatedV1 *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Listener_DeprecatedV1_set_bind_to_port(envoy_api_v2_Listener_DeprecatedV1 *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_Listener_DeprecatedV1_mutable_bind_to_port(envoy_api_v2_Listener_DeprecatedV1 *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_Listener_DeprecatedV1_bind_to_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_DeprecatedV1_set_bind_to_port(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Listener.ConnectionBalanceConfig */
+
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig *envoy_api_v2_Listener_ConnectionBalanceConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_ConnectionBalanceConfig *)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig *envoy_api_v2_Listener_ConnectionBalanceConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_ConnectionBalanceConfig *ret = envoy_api_v2_Listener_ConnectionBalanceConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_ConnectionBalanceConfig_serialize(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_ConnectionBalanceConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_exact_balance = 1,
+  envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_NOT_SET = 0
+} envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases;
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_case(const envoy_api_v2_Listener_ConnectionBalanceConfig* msg) { return (envoy_api_v2_Listener_ConnectionBalanceConfig_balance_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_Listener_ConnectionBalanceConfig_has_exact_balance(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* envoy_api_v2_Listener_ConnectionBalanceConfig_exact_balance(const envoy_api_v2_Listener_ConnectionBalanceConfig *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_api_v2_Listener_ConnectionBalanceConfig_set_exact_balance(envoy_api_v2_Listener_ConnectionBalanceConfig *msg, envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* envoy_api_v2_Listener_ConnectionBalanceConfig_mutable_exact_balance(envoy_api_v2_Listener_ConnectionBalanceConfig *msg, upb_arena *arena) {
+  struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance* sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*)envoy_api_v2_Listener_ConnectionBalanceConfig_exact_balance(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance*)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Listener_ConnectionBalanceConfig_set_exact_balance(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.Listener.ConnectionBalanceConfig.ExactBalance */
+
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_new(upb_arena *arena) {
+  return (envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *)upb_msg_new(&envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *ret = envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_serialize(const envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Listener_ConnectionBalanceConfig_ExactBalance_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.c
new file mode 100644
index 0000000..0a61c4c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h
new file mode 100644
index 0000000..9f7bd53
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.c
new file mode 100644
index 0000000..bd96450
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.c	
@@ -0,0 +1,196 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h"
+#else
+  #include  "envoy/api/v2/listener/listener_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/auth/cert.upb.h"
+#else
+  #include  "envoy/api/v2/auth/cert.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/address.upb.h"
+#else
+  #include  "envoy/api/v2/core/address.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/range.upb.h"
+#else
+  #include  "envoy/type/range.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_listener_Filter_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_Filter__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {4, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_Filter_msginit = {
+  &envoy_api_v2_listener_Filter_submsgs[0],
+  &envoy_api_v2_listener_Filter__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_listener_FilterChainMatch_submsgs[4] = {
+  &envoy_api_v2_core_CidrRange_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_FilterChainMatch__fields[10] = {
+  {3, UPB_SIZE(32, 56), 0, 0, 11, 3},
+  {4, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {5, UPB_SIZE(24, 40), 0, 1, 11, 1},
+  {6, UPB_SIZE(36, 64), 0, 0, 11, 3},
+  {7, UPB_SIZE(40, 72), 0, 0, 13, 3},
+  {8, UPB_SIZE(28, 48), 0, 1, 11, 1},
+  {9, UPB_SIZE(16, 24), 0, 0, 9, 1},
+  {10, UPB_SIZE(44, 80), 0, 0, 9, 3},
+  {11, UPB_SIZE(48, 88), 0, 0, 9, 3},
+  {12, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_FilterChainMatch_msginit = {
+  &envoy_api_v2_listener_FilterChainMatch_submsgs[0],
+  &envoy_api_v2_listener_FilterChainMatch__fields[0],
+  UPB_SIZE(56, 96), 10, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_listener_FilterChain_submsgs[6] = {
+  &envoy_api_v2_auth_DownstreamTlsContext_msginit,
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_core_TransportSocket_msginit,
+  &envoy_api_v2_listener_Filter_msginit,
+  &envoy_api_v2_listener_FilterChainMatch_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_FilterChain__fields[7] = {
+  {1, UPB_SIZE(8, 16), 0, 4, 11, 1},
+  {2, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {3, UPB_SIZE(28, 56), 0, 3, 11, 3},
+  {4, UPB_SIZE(16, 32), 0, 5, 11, 1},
+  {5, UPB_SIZE(20, 40), 0, 1, 11, 1},
+  {6, UPB_SIZE(24, 48), 0, 2, 11, 1},
+  {7, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_FilterChain_msginit = {
+  &envoy_api_v2_listener_FilterChain_submsgs[0],
+  &envoy_api_v2_listener_FilterChain__fields[0],
+  UPB_SIZE(32, 64), 7, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_submsgs[4] = {
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit,
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit,
+  &envoy_type_Int32Range_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_ListenerFilterChainMatchPredicate__fields[5] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 8, 1},
+  {5, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit = {
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_submsgs[0],
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate__fields[0],
+  UPB_SIZE(8, 16), 5, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_submsgs[1] = {
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit = {
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_submsgs[0],
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_listener_ListenerFilter_submsgs[3] = {
+  &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit,
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_ListenerFilter__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 2, 11, 1},
+  {3, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 1, 11, 1},
+  {4, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_ListenerFilter_msginit = {
+  &envoy_api_v2_listener_ListenerFilter_submsgs[0],
+  &envoy_api_v2_listener_ListenerFilter__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h
new file mode 100644
index 0000000..ee75ed4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/listener_components.upb.h	
@@ -0,0 +1,551 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/listener_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_listener_Filter;
+struct envoy_api_v2_listener_FilterChainMatch;
+struct envoy_api_v2_listener_FilterChain;
+struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate;
+struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet;
+struct envoy_api_v2_listener_ListenerFilter;
+typedef struct envoy_api_v2_listener_Filter envoy_api_v2_listener_Filter;
+typedef struct envoy_api_v2_listener_FilterChainMatch envoy_api_v2_listener_FilterChainMatch;
+typedef struct envoy_api_v2_listener_FilterChain envoy_api_v2_listener_FilterChain;
+typedef struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate envoy_api_v2_listener_ListenerFilterChainMatchPredicate;
+typedef struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet;
+typedef struct envoy_api_v2_listener_ListenerFilter envoy_api_v2_listener_ListenerFilter;
+extern const upb_msglayout envoy_api_v2_listener_Filter_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChainMatch_msginit;
+extern const upb_msglayout envoy_api_v2_listener_FilterChain_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ListenerFilter_msginit;
+struct envoy_api_v2_auth_DownstreamTlsContext;
+struct envoy_api_v2_core_CidrRange;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_TransportSocket;
+struct envoy_type_Int32Range;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_auth_DownstreamTlsContext_msginit;
+extern const upb_msglayout envoy_api_v2_core_CidrRange_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_TransportSocket_msginit;
+extern const upb_msglayout envoy_type_Int32Range_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_listener_FilterChainMatch_ANY = 0,
+  envoy_api_v2_listener_FilterChainMatch_LOCAL = 1,
+  envoy_api_v2_listener_FilterChainMatch_EXTERNAL = 2
+} envoy_api_v2_listener_FilterChainMatch_ConnectionSourceType;
+
+
+/* envoy.api.v2.listener.Filter */
+
+UPB_INLINE envoy_api_v2_listener_Filter *envoy_api_v2_listener_Filter_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_Filter *)upb_msg_new(&envoy_api_v2_listener_Filter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_Filter *envoy_api_v2_listener_Filter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_Filter *ret = envoy_api_v2_listener_Filter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_Filter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_Filter_serialize(const envoy_api_v2_listener_Filter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_Filter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_Filter_config_type_config = 2,
+  envoy_api_v2_listener_Filter_config_type_typed_config = 4,
+  envoy_api_v2_listener_Filter_config_type_NOT_SET = 0
+} envoy_api_v2_listener_Filter_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_Filter_config_type_oneofcases envoy_api_v2_listener_Filter_config_type_case(const envoy_api_v2_listener_Filter* msg) { return (envoy_api_v2_listener_Filter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_Filter_name(const envoy_api_v2_listener_Filter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_Filter_has_config(const envoy_api_v2_listener_Filter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_Filter_config(const envoy_api_v2_listener_Filter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_Filter_has_typed_config(const envoy_api_v2_listener_Filter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_Filter_typed_config(const envoy_api_v2_listener_Filter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_Filter_set_name(envoy_api_v2_listener_Filter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_Filter_set_config(envoy_api_v2_listener_Filter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_Filter_mutable_config(envoy_api_v2_listener_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_Filter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_Filter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_Filter_set_typed_config(envoy_api_v2_listener_Filter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_Filter_mutable_typed_config(envoy_api_v2_listener_Filter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_Filter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_Filter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.FilterChainMatch */
+
+UPB_INLINE envoy_api_v2_listener_FilterChainMatch *envoy_api_v2_listener_FilterChainMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_FilterChainMatch *)upb_msg_new(&envoy_api_v2_listener_FilterChainMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_FilterChainMatch *envoy_api_v2_listener_FilterChainMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_FilterChainMatch *ret = envoy_api_v2_listener_FilterChainMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_FilterChainMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_FilterChainMatch_serialize(const envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_FilterChainMatch_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_CidrRange* const* envoy_api_v2_listener_FilterChainMatch_prefix_ranges(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (const struct envoy_api_v2_core_CidrRange* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChainMatch_address_suffix(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_suffix_len(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_CidrRange* const* envoy_api_v2_listener_FilterChainMatch_source_prefix_ranges(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (const struct envoy_api_v2_core_CidrRange* const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE uint32_t const* envoy_api_v2_listener_FilterChainMatch_source_ports(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_destination_port(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChainMatch_transport_protocol(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE upb_strview const* envoy_api_v2_listener_FilterChainMatch_application_protocols(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_listener_FilterChainMatch_server_names(const envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE int32_t envoy_api_v2_listener_FilterChainMatch_source_type(const envoy_api_v2_listener_FilterChainMatch *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_mutable_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_resize_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange* envoy_api_v2_listener_FilterChainMatch_add_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_CidrRange* sub = (struct envoy_api_v2_core_CidrRange*)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_address_suffix(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_suffix_len(envoy_api_v2_listener_FilterChainMatch *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_mutable_suffix_len(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_listener_FilterChainMatch_suffix_len(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChainMatch_set_suffix_len(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_mutable_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange** envoy_api_v2_listener_FilterChainMatch_resize_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_CidrRange**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_CidrRange* envoy_api_v2_listener_FilterChainMatch_add_source_prefix_ranges(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_CidrRange* sub = (struct envoy_api_v2_core_CidrRange*)upb_msg_new(&envoy_api_v2_core_CidrRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE uint32_t* envoy_api_v2_listener_FilterChainMatch_mutable_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE uint32_t* envoy_api_v2_listener_FilterChainMatch_resize_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_source_ports(envoy_api_v2_listener_FilterChainMatch *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_destination_port(envoy_api_v2_listener_FilterChainMatch *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_listener_FilterChainMatch_mutable_destination_port(envoy_api_v2_listener_FilterChainMatch *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_listener_FilterChainMatch_destination_port(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChainMatch_set_destination_port(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_transport_protocol(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_mutable_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_resize_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_application_protocols(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_mutable_server_names(envoy_api_v2_listener_FilterChainMatch *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_listener_FilterChainMatch_resize_server_names(envoy_api_v2_listener_FilterChainMatch *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_listener_FilterChainMatch_add_server_names(envoy_api_v2_listener_FilterChainMatch *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChainMatch_set_source_type(envoy_api_v2_listener_FilterChainMatch *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.listener.FilterChain */
+
+UPB_INLINE envoy_api_v2_listener_FilterChain *envoy_api_v2_listener_FilterChain_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_FilterChain *)upb_msg_new(&envoy_api_v2_listener_FilterChain_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_FilterChain *envoy_api_v2_listener_FilterChain_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_FilterChain *ret = envoy_api_v2_listener_FilterChain_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_FilterChain_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_FilterChain_serialize(const envoy_api_v2_listener_FilterChain *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_FilterChain_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_listener_FilterChainMatch* envoy_api_v2_listener_FilterChain_filter_chain_match(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_listener_FilterChainMatch*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_auth_DownstreamTlsContext* envoy_api_v2_listener_FilterChain_tls_context(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_auth_DownstreamTlsContext*, UPB_SIZE(12, 24)); }
+UPB_INLINE const envoy_api_v2_listener_Filter* const* envoy_api_v2_listener_FilterChain_filters(const envoy_api_v2_listener_FilterChain *msg, size_t *len) { return (const envoy_api_v2_listener_Filter* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_listener_FilterChain_use_proxy_proto(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_listener_FilterChain_metadata(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct envoy_api_v2_core_TransportSocket* envoy_api_v2_listener_FilterChain_transport_socket(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(24, 48)); }
+UPB_INLINE upb_strview envoy_api_v2_listener_FilterChain_name(const envoy_api_v2_listener_FilterChain *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_filter_chain_match(envoy_api_v2_listener_FilterChain *msg, envoy_api_v2_listener_FilterChainMatch* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_listener_FilterChainMatch*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_FilterChainMatch* envoy_api_v2_listener_FilterChain_mutable_filter_chain_match(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_FilterChainMatch* sub = (struct envoy_api_v2_listener_FilterChainMatch*)envoy_api_v2_listener_FilterChain_filter_chain_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_FilterChainMatch*)upb_msg_new(&envoy_api_v2_listener_FilterChainMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_filter_chain_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_tls_context(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_auth_DownstreamTlsContext* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_auth_DownstreamTlsContext*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_auth_DownstreamTlsContext* envoy_api_v2_listener_FilterChain_mutable_tls_context(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_auth_DownstreamTlsContext* sub = (struct envoy_api_v2_auth_DownstreamTlsContext*)envoy_api_v2_listener_FilterChain_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_auth_DownstreamTlsContext*)upb_msg_new(&envoy_api_v2_auth_DownstreamTlsContext_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_listener_Filter** envoy_api_v2_listener_FilterChain_mutable_filters(envoy_api_v2_listener_FilterChain *msg, size_t *len) {
+  return (envoy_api_v2_listener_Filter**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_listener_Filter** envoy_api_v2_listener_FilterChain_resize_filters(envoy_api_v2_listener_FilterChain *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_listener_Filter**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_Filter* envoy_api_v2_listener_FilterChain_add_filters(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_Filter* sub = (struct envoy_api_v2_listener_Filter*)upb_msg_new(&envoy_api_v2_listener_Filter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_use_proxy_proto(envoy_api_v2_listener_FilterChain *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_listener_FilterChain_mutable_use_proxy_proto(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_listener_FilterChain_use_proxy_proto(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_use_proxy_proto(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_metadata(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_listener_FilterChain_mutable_metadata(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_listener_FilterChain_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_transport_socket(envoy_api_v2_listener_FilterChain *msg, struct envoy_api_v2_core_TransportSocket* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_TransportSocket*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_TransportSocket* envoy_api_v2_listener_FilterChain_mutable_transport_socket(envoy_api_v2_listener_FilterChain *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_TransportSocket* sub = (struct envoy_api_v2_core_TransportSocket*)envoy_api_v2_listener_FilterChain_transport_socket(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_TransportSocket*)upb_msg_new(&envoy_api_v2_core_TransportSocket_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_FilterChain_set_transport_socket(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_FilterChain_set_name(envoy_api_v2_listener_FilterChain *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.listener.ListenerFilterChainMatchPredicate */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate *)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate *ret = envoy_api_v2_listener_ListenerFilterChainMatchPredicate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_serialize(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_or_match = 1,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_and_match = 2,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_not_match = 3,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_any_match = 4,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_destination_port_range = 5,
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_NOT_SET = 0
+} envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases;
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_case(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* msg) { return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate_rule_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_or_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_or_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_and_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_and_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_not_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_not_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_any_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_any_match(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, false); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilterChainMatchPredicate_has_destination_port_range(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const struct envoy_type_Int32Range* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_destination_port_range(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_Int32Range*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_or_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_or_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_or_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_or_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_and_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_and_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_and_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_and_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_not_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_not_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_not_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_not_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_any_match(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_destination_port_range(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, struct envoy_type_Int32Range* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_Int32Range*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_type_Int32Range* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_mutable_destination_port_range(envoy_api_v2_listener_ListenerFilterChainMatchPredicate *msg, upb_arena *arena) {
+  struct envoy_type_Int32Range* sub = (struct envoy_type_Int32Range*)envoy_api_v2_listener_ListenerFilterChainMatchPredicate_destination_port_range(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Int32Range*)upb_msg_new(&envoy_type_Int32Range_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilterChainMatchPredicate_set_destination_port_range(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.ListenerFilterChainMatchPredicate.MatchSet */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *ret = envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_serialize(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* const* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_rules(const envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t *len) { return (const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate** envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_mutable_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t *len) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilterChainMatchPredicate** envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_resize_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilterChainMatchPredicate**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet_add_rules(envoy_api_v2_listener_ListenerFilterChainMatchPredicate_MatchSet *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.listener.ListenerFilter */
+
+UPB_INLINE envoy_api_v2_listener_ListenerFilter *envoy_api_v2_listener_ListenerFilter_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ListenerFilter *)upb_msg_new(&envoy_api_v2_listener_ListenerFilter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ListenerFilter *envoy_api_v2_listener_ListenerFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ListenerFilter *ret = envoy_api_v2_listener_ListenerFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ListenerFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ListenerFilter_serialize(const envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ListenerFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_ListenerFilter_config_type_config = 2,
+  envoy_api_v2_listener_ListenerFilter_config_type_typed_config = 3,
+  envoy_api_v2_listener_ListenerFilter_config_type_NOT_SET = 0
+} envoy_api_v2_listener_ListenerFilter_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_ListenerFilter_config_type_oneofcases envoy_api_v2_listener_ListenerFilter_config_type_case(const envoy_api_v2_listener_ListenerFilter* msg) { return (envoy_api_v2_listener_ListenerFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_ListenerFilter_name(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilter_has_config(const envoy_api_v2_listener_ListenerFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_ListenerFilter_config(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_ListenerFilter_has_typed_config(const envoy_api_v2_listener_ListenerFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_ListenerFilter_typed_config(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE const envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilter_filter_disabled(const envoy_api_v2_listener_ListenerFilter *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_name(envoy_api_v2_listener_ListenerFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_config(envoy_api_v2_listener_ListenerFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_ListenerFilter_mutable_config(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_ListenerFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_typed_config(envoy_api_v2_listener_ListenerFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_ListenerFilter_mutable_typed_config(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_ListenerFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_ListenerFilter_set_filter_disabled(envoy_api_v2_listener_ListenerFilter *msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_listener_ListenerFilterChainMatchPredicate*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* envoy_api_v2_listener_ListenerFilter_mutable_filter_disabled(envoy_api_v2_listener_ListenerFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate* sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)envoy_api_v2_listener_ListenerFilter_filter_disabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_listener_ListenerFilterChainMatchPredicate*)upb_msg_new(&envoy_api_v2_listener_ListenerFilterChainMatchPredicate_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_ListenerFilter_set_filter_disabled(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_LISTENER_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.c
new file mode 100644
index 0000000..c37919d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.c	
@@ -0,0 +1,70 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/udp_listener_config.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h"
+#else
+  #include  "envoy/api/v2/listener/udp_listener_config.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_listener_UdpListenerConfig_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_listener_UdpListenerConfig__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_listener_UdpListenerConfig_msginit = {
+  &envoy_api_v2_listener_UdpListenerConfig_submsgs[0],
+  &envoy_api_v2_listener_UdpListenerConfig__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+const upb_msglayout envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h
new file mode 100644
index 0000000..80f4a7e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/listener/udp_listener_config.upb.h	
@@ -0,0 +1,136 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/listener/udp_listener_config.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_
+#define ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_listener_UdpListenerConfig;
+struct envoy_api_v2_listener_ActiveRawUdpListenerConfig;
+typedef struct envoy_api_v2_listener_UdpListenerConfig envoy_api_v2_listener_UdpListenerConfig;
+typedef struct envoy_api_v2_listener_ActiveRawUdpListenerConfig envoy_api_v2_listener_ActiveRawUdpListenerConfig;
+extern const upb_msglayout envoy_api_v2_listener_UdpListenerConfig_msginit;
+extern const upb_msglayout envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit;
+struct google_protobuf_Any;
+struct google_protobuf_Struct;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+
+/* envoy.api.v2.listener.UdpListenerConfig */
+
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig *envoy_api_v2_listener_UdpListenerConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_UdpListenerConfig *)upb_msg_new(&envoy_api_v2_listener_UdpListenerConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig *envoy_api_v2_listener_UdpListenerConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_UdpListenerConfig *ret = envoy_api_v2_listener_UdpListenerConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_UdpListenerConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_UdpListenerConfig_serialize(const envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_UdpListenerConfig_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_listener_UdpListenerConfig_config_type_config = 2,
+  envoy_api_v2_listener_UdpListenerConfig_config_type_typed_config = 3,
+  envoy_api_v2_listener_UdpListenerConfig_config_type_NOT_SET = 0
+} envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases envoy_api_v2_listener_UdpListenerConfig_config_type_case(const envoy_api_v2_listener_UdpListenerConfig* msg) { return (envoy_api_v2_listener_UdpListenerConfig_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_listener_UdpListenerConfig_udp_listener_name(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_listener_UdpListenerConfig_has_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_listener_UdpListenerConfig_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_listener_UdpListenerConfig_has_typed_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_listener_UdpListenerConfig_typed_config(const envoy_api_v2_listener_UdpListenerConfig *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_udp_listener_name(envoy_api_v2_listener_UdpListenerConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_config(envoy_api_v2_listener_UdpListenerConfig *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_listener_UdpListenerConfig_mutable_config(envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_listener_UdpListenerConfig_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_UdpListenerConfig_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_listener_UdpListenerConfig_set_typed_config(envoy_api_v2_listener_UdpListenerConfig *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_listener_UdpListenerConfig_mutable_typed_config(envoy_api_v2_listener_UdpListenerConfig *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_listener_UdpListenerConfig_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_listener_UdpListenerConfig_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.listener.ActiveRawUdpListenerConfig */
+
+UPB_INLINE envoy_api_v2_listener_ActiveRawUdpListenerConfig *envoy_api_v2_listener_ActiveRawUdpListenerConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_listener_ActiveRawUdpListenerConfig *)upb_msg_new(&envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_listener_ActiveRawUdpListenerConfig *envoy_api_v2_listener_ActiveRawUdpListenerConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_listener_ActiveRawUdpListenerConfig *ret = envoy_api_v2_listener_ActiveRawUdpListenerConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_listener_ActiveRawUdpListenerConfig_serialize(const envoy_api_v2_listener_ActiveRawUdpListenerConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_listener_ActiveRawUdpListenerConfig_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_LISTENER_UDP_LISTENER_CONFIG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.c
new file mode 100644
index 0000000..eda94c2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.c	
@@ -0,0 +1,73 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/rds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/rds.upb.h"
+#else
+  #include  "envoy/api/v2/rds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route.upb.h"
+#else
+  #include  "envoy/api/v2/route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_RdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h
new file mode 100644
index 0000000..c4ee624
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/rds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/rds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_RDS_PROTO_UPB_H_
+#define ENVOY_API_V2_RDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route.upb.h"
+#else
+  #include  "envoy/api/v2/route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_RdsDummy;
+typedef struct envoy_api_v2_RdsDummy envoy_api_v2_RdsDummy;
+extern const upb_msglayout envoy_api_v2_RdsDummy_msginit;
+
+
+/* envoy.api.v2.RdsDummy */
+
+UPB_INLINE envoy_api_v2_RdsDummy *envoy_api_v2_RdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_RdsDummy *)upb_msg_new(&envoy_api_v2_RdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_RdsDummy *envoy_api_v2_RdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_RdsDummy *ret = envoy_api_v2_RdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_RdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_RdsDummy_serialize(const envoy_api_v2_RdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_RdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_RDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.c
new file mode 100644
index 0000000..b80e3db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.c	
@@ -0,0 +1,102 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route.upb.h"
+#else
+  #include  "envoy/api/v2/route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_RouteConfiguration_submsgs[5] = {
+  &envoy_api_v2_Vhds_msginit,
+  &envoy_api_v2_core_HeaderValueOption_msginit,
+  &envoy_api_v2_route_VirtualHost_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_RouteConfiguration__fields[10] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(20, 40), 0, 2, 11, 3},
+  {3, UPB_SIZE(24, 48), 0, 0, 9, 3},
+  {4, UPB_SIZE(28, 56), 0, 1, 11, 3},
+  {5, UPB_SIZE(32, 64), 0, 0, 9, 3},
+  {6, UPB_SIZE(36, 72), 0, 1, 11, 3},
+  {7, UPB_SIZE(12, 24), 0, 3, 11, 1},
+  {8, UPB_SIZE(40, 80), 0, 0, 9, 3},
+  {9, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {10, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_RouteConfiguration_msginit = {
+  &envoy_api_v2_RouteConfiguration_submsgs[0],
+  &envoy_api_v2_RouteConfiguration__fields[0],
+  UPB_SIZE(48, 96), 10, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_Vhds_submsgs[1] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_Vhds__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_Vhds_msginit = {
+  &envoy_api_v2_Vhds_submsgs[0],
+  &envoy_api_v2_Vhds__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.h
new file mode 100644
index 0000000..b103a1f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route.upb.h	
@@ -0,0 +1,223 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_RouteConfiguration;
+struct envoy_api_v2_Vhds;
+typedef struct envoy_api_v2_RouteConfiguration envoy_api_v2_RouteConfiguration;
+typedef struct envoy_api_v2_Vhds envoy_api_v2_Vhds;
+extern const upb_msglayout envoy_api_v2_RouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_Vhds_msginit;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_route_VirtualHost;
+struct google_protobuf_BoolValue;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+
+
+/* envoy.api.v2.RouteConfiguration */
+
+UPB_INLINE envoy_api_v2_RouteConfiguration *envoy_api_v2_RouteConfiguration_new(upb_arena *arena) {
+  return (envoy_api_v2_RouteConfiguration *)upb_msg_new(&envoy_api_v2_RouteConfiguration_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_RouteConfiguration *envoy_api_v2_RouteConfiguration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_RouteConfiguration *ret = envoy_api_v2_RouteConfiguration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_RouteConfiguration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_RouteConfiguration_serialize(const envoy_api_v2_RouteConfiguration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_RouteConfiguration_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_RouteConfiguration_name(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_route_VirtualHost* const* envoy_api_v2_RouteConfiguration_virtual_hosts(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_route_VirtualHost* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_internal_only_headers(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_RouteConfiguration_response_headers_to_add(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_response_headers_to_remove(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_RouteConfiguration_request_headers_to_add(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_RouteConfiguration_validate_clusters(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* envoy_api_v2_RouteConfiguration_request_headers_to_remove(const envoy_api_v2_RouteConfiguration *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE const envoy_api_v2_Vhds* envoy_api_v2_RouteConfiguration_vhds(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_Vhds*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_most_specific_header_mutations_wins(const envoy_api_v2_RouteConfiguration *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_name(envoy_api_v2_RouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost** envoy_api_v2_RouteConfiguration_mutable_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_route_VirtualHost**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost** envoy_api_v2_RouteConfiguration_resize_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_route_VirtualHost**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost* envoy_api_v2_RouteConfiguration_add_virtual_hosts(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost* sub = (struct envoy_api_v2_route_VirtualHost*)upb_msg_new(&envoy_api_v2_route_VirtualHost_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_internal_only_headers(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_mutable_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_resize_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_RouteConfiguration_add_response_headers_to_add(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_response_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_mutable_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_RouteConfiguration_resize_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_RouteConfiguration_add_request_headers_to_add(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_validate_clusters(envoy_api_v2_RouteConfiguration *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_RouteConfiguration_mutable_validate_clusters(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_RouteConfiguration_validate_clusters(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_RouteConfiguration_set_validate_clusters(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_mutable_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_RouteConfiguration_resize_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_RouteConfiguration_add_request_headers_to_remove(envoy_api_v2_RouteConfiguration *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_vhds(envoy_api_v2_RouteConfiguration *msg, envoy_api_v2_Vhds* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_Vhds*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_Vhds* envoy_api_v2_RouteConfiguration_mutable_vhds(envoy_api_v2_RouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_Vhds* sub = (struct envoy_api_v2_Vhds*)envoy_api_v2_RouteConfiguration_vhds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_Vhds*)upb_msg_new(&envoy_api_v2_Vhds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_RouteConfiguration_set_vhds(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_RouteConfiguration_set_most_specific_header_mutations_wins(envoy_api_v2_RouteConfiguration *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.Vhds */
+
+UPB_INLINE envoy_api_v2_Vhds *envoy_api_v2_Vhds_new(upb_arena *arena) {
+  return (envoy_api_v2_Vhds *)upb_msg_new(&envoy_api_v2_Vhds_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_Vhds *envoy_api_v2_Vhds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_Vhds *ret = envoy_api_v2_Vhds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_Vhds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_Vhds_serialize(const envoy_api_v2_Vhds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_Vhds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Vhds_config_source(const envoy_api_v2_Vhds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_Vhds_set_config_source(envoy_api_v2_Vhds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_api_v2_Vhds_mutable_config_source(envoy_api_v2_Vhds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_api_v2_Vhds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_Vhds_set_config_source(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.c
new file mode 100644
index 0000000..e1d2f5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h"
+#else
+  #include  "envoy/api/v2/route/route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h
new file mode 100644
index 0000000..88ae59f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route.upb.h	
@@ -0,0 +1,61 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.c
new file mode 100644
index 0000000..7511029
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.c	
@@ -0,0 +1,861 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h"
+#else
+  #include  "envoy/type/matcher/regex.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/string.upb.h"
+#else
+  #include  "envoy/type/matcher/string.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/range.upb.h"
+#else
+  #include  "envoy/type/range.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h"
+#else
+  #include  "envoy/type/tracing/v2/custom_tag.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_route_VirtualHost_submsgs[11] = {
+  &envoy_api_v2_core_HeaderValueOption_msginit,
+  &envoy_api_v2_route_CorsPolicy_msginit,
+  &envoy_api_v2_route_HedgePolicy_msginit,
+  &envoy_api_v2_route_RateLimit_msginit,
+  &envoy_api_v2_route_RetryPolicy_msginit,
+  &envoy_api_v2_route_Route_msginit,
+  &envoy_api_v2_route_VirtualCluster_msginit,
+  &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit,
+  &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_VirtualHost__fields[17] = {
+  {1, UPB_SIZE(12, 16), 0, 0, 9, 1},
+  {2, UPB_SIZE(36, 64), 0, 0, 9, 3},
+  {3, UPB_SIZE(40, 72), 0, 5, 11, 3},
+  {4, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {5, UPB_SIZE(44, 80), 0, 6, 11, 3},
+  {6, UPB_SIZE(48, 88), 0, 3, 11, 3},
+  {7, UPB_SIZE(52, 96), 0, 0, 11, 3},
+  {8, UPB_SIZE(20, 32), 0, 1, 11, 1},
+  {10, UPB_SIZE(56, 104), 0, 0, 11, 3},
+  {11, UPB_SIZE(60, 112), 0, 0, 9, 3},
+  {12, UPB_SIZE(64, 120), 0, 7, 11, 3},
+  {13, UPB_SIZE(68, 128), 0, 0, 9, 3},
+  {14, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {15, UPB_SIZE(72, 136), 0, 8, 11, 3},
+  {16, UPB_SIZE(24, 40), 0, 4, 11, 1},
+  {17, UPB_SIZE(28, 48), 0, 2, 11, 1},
+  {18, UPB_SIZE(32, 56), 0, 9, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_VirtualHost_msginit = {
+  &envoy_api_v2_route_VirtualHost_submsgs[0],
+  &envoy_api_v2_route_VirtualHost__fields[0],
+  UPB_SIZE(80, 144), 17, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_VirtualHost_PerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_FilterAction_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_FilterAction__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_FilterAction_msginit = {
+  &envoy_api_v2_route_FilterAction_submsgs[0],
+  &envoy_api_v2_route_FilterAction__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_Route_submsgs[13] = {
+  &envoy_api_v2_core_HeaderValueOption_msginit,
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_route_Decorator_msginit,
+  &envoy_api_v2_route_DirectResponseAction_msginit,
+  &envoy_api_v2_route_FilterAction_msginit,
+  &envoy_api_v2_route_RedirectAction_msginit,
+  &envoy_api_v2_route_Route_PerFilterConfigEntry_msginit,
+  &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit,
+  &envoy_api_v2_route_RouteAction_msginit,
+  &envoy_api_v2_route_RouteMatch_msginit,
+  &envoy_api_v2_route_Tracing_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_Route__fields[16] = {
+  {1, UPB_SIZE(8, 16), 0, 9, 11, 1},
+  {2, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 8, 11, 1},
+  {3, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 5, 11, 1},
+  {4, UPB_SIZE(12, 24), 0, 1, 11, 1},
+  {5, UPB_SIZE(16, 32), 0, 2, 11, 1},
+  {7, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 3, 11, 1},
+  {8, UPB_SIZE(28, 56), 0, 6, 11, 3},
+  {9, UPB_SIZE(32, 64), 0, 0, 11, 3},
+  {10, UPB_SIZE(36, 72), 0, 0, 11, 3},
+  {11, UPB_SIZE(40, 80), 0, 0, 9, 3},
+  {12, UPB_SIZE(44, 88), 0, 0, 9, 3},
+  {13, UPB_SIZE(48, 96), 0, 7, 11, 3},
+  {14, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {15, UPB_SIZE(20, 40), 0, 10, 11, 1},
+  {16, UPB_SIZE(24, 48), 0, 11, 11, 1},
+  {17, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 4, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_Route_msginit = {
+  &envoy_api_v2_route_Route_submsgs[0],
+  &envoy_api_v2_route_Route__fields[0],
+  UPB_SIZE(64, 128), 16, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_Route_PerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_Route_PerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_Route_PerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_Route_PerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_Route_PerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_Route_TypedPerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_Route_TypedPerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_Route_TypedPerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_WeightedCluster_submsgs[2] = {
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_WeightedCluster__fields[3] = {
+  {1, UPB_SIZE(12, 24), 0, 0, 11, 3},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {3, UPB_SIZE(8, 16), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_WeightedCluster_msginit = {
+  &envoy_api_v2_route_WeightedCluster_submsgs[0],
+  &envoy_api_v2_route_WeightedCluster__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_WeightedCluster_ClusterWeight_submsgs[6] = {
+  &envoy_api_v2_core_HeaderValueOption_msginit,
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit,
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_WeightedCluster_ClusterWeight__fields[9] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 4, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 1, 11, 1},
+  {4, UPB_SIZE(16, 32), 0, 0, 11, 3},
+  {5, UPB_SIZE(20, 40), 0, 0, 11, 3},
+  {6, UPB_SIZE(24, 48), 0, 0, 9, 3},
+  {8, UPB_SIZE(28, 56), 0, 2, 11, 3},
+  {9, UPB_SIZE(32, 64), 0, 0, 9, 3},
+  {10, UPB_SIZE(36, 72), 0, 3, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit = {
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_submsgs[0],
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight__fields[0],
+  UPB_SIZE(40, 80), 9, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit = {
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_submsgs[0],
+  &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteMatch_submsgs[7] = {
+  &envoy_api_v2_core_RuntimeFractionalPercent_msginit,
+  &envoy_api_v2_route_HeaderMatcher_msginit,
+  &envoy_api_v2_route_QueryParameterMatcher_msginit,
+  &envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit,
+  &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit,
+  &envoy_type_matcher_RegexMatcher_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteMatch__fields[10] = {
+  {1, UPB_SIZE(24, 48), UPB_SIZE(-33, -65), 0, 9, 1},
+  {2, UPB_SIZE(24, 48), UPB_SIZE(-33, -65), 0, 9, 1},
+  {3, UPB_SIZE(24, 48), UPB_SIZE(-33, -65), 0, 9, 1},
+  {4, UPB_SIZE(0, 0), 0, 6, 11, 1},
+  {6, UPB_SIZE(16, 32), 0, 1, 11, 3},
+  {7, UPB_SIZE(20, 40), 0, 2, 11, 3},
+  {8, UPB_SIZE(4, 8), 0, 3, 11, 1},
+  {9, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {10, UPB_SIZE(24, 48), UPB_SIZE(-33, -65), 5, 11, 1},
+  {11, UPB_SIZE(12, 24), 0, 4, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteMatch_msginit = {
+  &envoy_api_v2_route_RouteMatch_submsgs[0],
+  &envoy_api_v2_route_RouteMatch__fields[0],
+  UPB_SIZE(40, 80), 10, false,
+};
+
+const upb_msglayout envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_submsgs[2] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteMatch_TlsContextMatchOptions__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit = {
+  &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_submsgs[0],
+  &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_CorsPolicy_submsgs[5] = {
+  &envoy_api_v2_core_RuntimeFractionalPercent_msginit,
+  &envoy_type_matcher_StringMatcher_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_CorsPolicy__fields[11] = {
+  {1, UPB_SIZE(40, 80), 0, 0, 9, 3},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {4, UPB_SIZE(16, 32), 0, 0, 9, 1},
+  {5, UPB_SIZE(24, 48), 0, 0, 9, 1},
+  {6, UPB_SIZE(32, 64), 0, 2, 11, 1},
+  {7, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 2, 11, 1},
+  {8, UPB_SIZE(44, 88), 0, 0, 9, 3},
+  {9, UPB_SIZE(52, 104), UPB_SIZE(-57, -113), 0, 11, 1},
+  {10, UPB_SIZE(36, 72), 0, 0, 11, 1},
+  {11, UPB_SIZE(48, 96), 0, 1, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_CorsPolicy_msginit = {
+  &envoy_api_v2_route_CorsPolicy_submsgs[0],
+  &envoy_api_v2_route_CorsPolicy__fields[0],
+  UPB_SIZE(64, 128), 11, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteAction_submsgs[17] = {
+  &envoy_api_v2_core_Metadata_msginit,
+  &envoy_api_v2_route_CorsPolicy_msginit,
+  &envoy_api_v2_route_HedgePolicy_msginit,
+  &envoy_api_v2_route_RateLimit_msginit,
+  &envoy_api_v2_route_RetryPolicy_msginit,
+  &envoy_api_v2_route_RouteAction_HashPolicy_msginit,
+  &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit,
+  &envoy_api_v2_route_RouteAction_UpgradeConfig_msginit,
+  &envoy_api_v2_route_WeightedCluster_msginit,
+  &google_protobuf_BoolValue_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction__fields[25] = {
+  {1, UPB_SIZE(92, 160), UPB_SIZE(-101, -177), 0, 9, 1},
+  {2, UPB_SIZE(92, 160), UPB_SIZE(-101, -177), 0, 9, 1},
+  {3, UPB_SIZE(92, 160), UPB_SIZE(-101, -177), 8, 11, 1},
+  {4, UPB_SIZE(32, 40), 0, 0, 11, 1},
+  {5, UPB_SIZE(24, 24), 0, 0, 9, 1},
+  {6, UPB_SIZE(104, 184), UPB_SIZE(-113, -201), 0, 9, 1},
+  {7, UPB_SIZE(104, 184), UPB_SIZE(-113, -201), 9, 11, 1},
+  {8, UPB_SIZE(36, 48), 0, 10, 11, 1},
+  {9, UPB_SIZE(40, 56), 0, 4, 11, 1},
+  {10, UPB_SIZE(44, 64), 0, 6, 11, 1},
+  {11, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {13, UPB_SIZE(76, 128), 0, 3, 11, 3},
+  {14, UPB_SIZE(48, 72), 0, 9, 11, 1},
+  {15, UPB_SIZE(80, 136), 0, 5, 11, 3},
+  {17, UPB_SIZE(52, 80), 0, 1, 11, 1},
+  {20, UPB_SIZE(8, 8), 0, 0, 14, 1},
+  {23, UPB_SIZE(56, 88), 0, 10, 11, 1},
+  {24, UPB_SIZE(60, 96), 0, 10, 11, 1},
+  {25, UPB_SIZE(84, 144), 0, 7, 11, 3},
+  {26, UPB_SIZE(16, 16), 0, 0, 14, 1},
+  {27, UPB_SIZE(64, 104), 0, 2, 11, 1},
+  {28, UPB_SIZE(68, 112), 0, 10, 11, 1},
+  {29, UPB_SIZE(104, 184), UPB_SIZE(-113, -201), 0, 9, 1},
+  {30, UPB_SIZE(88, 152), 0, 6, 11, 3},
+  {31, UPB_SIZE(72, 120), 0, 11, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_msginit = {
+  &envoy_api_v2_route_RouteAction_submsgs[0],
+  &envoy_api_v2_route_RouteAction__fields[0],
+  UPB_SIZE(120, 208), 25, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteAction_RequestMirrorPolicy_submsgs[1] = {
+  &envoy_api_v2_core_RuntimeFractionalPercent_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_RequestMirrorPolicy__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(16, 32), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit = {
+  &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_submsgs[0],
+  &envoy_api_v2_route_RouteAction_RequestMirrorPolicy__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteAction_HashPolicy_submsgs[4] = {
+  &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit,
+  &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit,
+  &envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit,
+  &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_HashPolicy__fields[5] = {
+  {1, UPB_SIZE(4, 8), UPB_SIZE(-9, -17), 2, 11, 1},
+  {2, UPB_SIZE(4, 8), UPB_SIZE(-9, -17), 1, 11, 1},
+  {3, UPB_SIZE(4, 8), UPB_SIZE(-9, -17), 0, 11, 1},
+  {4, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {5, UPB_SIZE(4, 8), UPB_SIZE(-9, -17), 3, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_msginit = {
+  &envoy_api_v2_route_RouteAction_HashPolicy_submsgs[0],
+  &envoy_api_v2_route_RouteAction_HashPolicy__fields[0],
+  UPB_SIZE(12, 24), 5, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_HashPolicy_Header__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit = {
+  NULL,
+  &envoy_api_v2_route_RouteAction_HashPolicy_Header__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteAction_HashPolicy_Cookie_submsgs[1] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_HashPolicy_Cookie__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit = {
+  &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_submsgs[0],
+  &envoy_api_v2_route_RouteAction_HashPolicy_Cookie__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit = {
+  NULL,
+  &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties__fields[0],
+  UPB_SIZE(1, 1), 1, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit = {
+  NULL,
+  &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RouteAction_UpgradeConfig_submsgs[1] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RouteAction_UpgradeConfig__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RouteAction_UpgradeConfig_msginit = {
+  &envoy_api_v2_route_RouteAction_UpgradeConfig_submsgs[0],
+  &envoy_api_v2_route_RouteAction_UpgradeConfig__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RetryPolicy_submsgs[7] = {
+  &envoy_api_v2_route_HeaderMatcher_msginit,
+  &envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit,
+  &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit,
+  &envoy_api_v2_route_RetryPolicy_RetryPriority_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RetryPolicy__fields[10] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 24), 0, 5, 11, 1},
+  {3, UPB_SIZE(20, 32), 0, 4, 11, 1},
+  {4, UPB_SIZE(24, 40), 0, 3, 11, 1},
+  {5, UPB_SIZE(32, 56), 0, 2, 11, 3},
+  {6, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {7, UPB_SIZE(36, 64), 0, 0, 13, 3},
+  {8, UPB_SIZE(28, 48), 0, 1, 11, 1},
+  {9, UPB_SIZE(40, 72), 0, 0, 11, 3},
+  {10, UPB_SIZE(44, 80), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_RetryPolicy_msginit = {
+  &envoy_api_v2_route_RetryPolicy_submsgs[0],
+  &envoy_api_v2_route_RetryPolicy__fields[0],
+  UPB_SIZE(48, 96), 10, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RetryPolicy_RetryPriority_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RetryPolicy_RetryPriority__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryPriority_msginit = {
+  &envoy_api_v2_route_RetryPolicy_RetryPriority_submsgs[0],
+  &envoy_api_v2_route_RetryPolicy_RetryPriority__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RetryPolicy_RetryHostPredicate_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RetryPolicy_RetryHostPredicate__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit = {
+  &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_submsgs[0],
+  &envoy_api_v2_route_RetryPolicy_RetryHostPredicate__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RetryPolicy_RetryBackOff_submsgs[2] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RetryPolicy_RetryBackOff__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit = {
+  &envoy_api_v2_route_RetryPolicy_RetryBackOff_submsgs[0],
+  &envoy_api_v2_route_RetryPolicy_RetryBackOff__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_HedgePolicy_submsgs[2] = {
+  &envoy_type_FractionalPercent_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_HedgePolicy__fields[3] = {
+  {1, UPB_SIZE(4, 8), 0, 1, 11, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_HedgePolicy_msginit = {
+  &envoy_api_v2_route_HedgePolicy_submsgs[0],
+  &envoy_api_v2_route_HedgePolicy__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RedirectAction__fields[8] = {
+  {1, UPB_SIZE(16, 16), 0, 0, 9, 1},
+  {2, UPB_SIZE(24, 32), UPB_SIZE(-33, -49), 0, 9, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {4, UPB_SIZE(36, 56), UPB_SIZE(-45, -73), 0, 8, 1},
+  {5, UPB_SIZE(24, 32), UPB_SIZE(-33, -49), 0, 9, 1},
+  {6, UPB_SIZE(12, 12), 0, 0, 8, 1},
+  {7, UPB_SIZE(36, 56), UPB_SIZE(-45, -73), 0, 9, 1},
+  {8, UPB_SIZE(8, 8), 0, 0, 13, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RedirectAction_msginit = {
+  NULL,
+  &envoy_api_v2_route_RedirectAction__fields[0],
+  UPB_SIZE(48, 80), 8, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_DirectResponseAction_submsgs[1] = {
+  &envoy_api_v2_core_DataSource_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_DirectResponseAction__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_DirectResponseAction_msginit = {
+  &envoy_api_v2_route_DirectResponseAction_submsgs[0],
+  &envoy_api_v2_route_DirectResponseAction__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_Decorator_submsgs[1] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_Decorator__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_Decorator_msginit = {
+  &envoy_api_v2_route_Decorator_submsgs[0],
+  &envoy_api_v2_route_Decorator__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_Tracing_submsgs[4] = {
+  &envoy_type_FractionalPercent_msginit,
+  &envoy_type_tracing_v2_CustomTag_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_Tracing__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {4, UPB_SIZE(12, 24), 0, 1, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_Tracing_msginit = {
+  &envoy_api_v2_route_Tracing_submsgs[0],
+  &envoy_api_v2_route_Tracing__fields[0],
+  UPB_SIZE(16, 32), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_VirtualCluster_submsgs[1] = {
+  &envoy_api_v2_route_HeaderMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_VirtualCluster__fields[4] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 24), 0, 0, 9, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {4, UPB_SIZE(24, 40), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_VirtualCluster_msginit = {
+  &envoy_api_v2_route_VirtualCluster_submsgs[0],
+  &envoy_api_v2_route_VirtualCluster__fields[0],
+  UPB_SIZE(32, 48), 4, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RateLimit_submsgs[2] = {
+  &envoy_api_v2_route_RateLimit_Action_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RateLimit__fields[3] = {
+  {1, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_msginit = {
+  &envoy_api_v2_route_RateLimit_submsgs[0],
+  &envoy_api_v2_route_RateLimit__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RateLimit_Action_submsgs[6] = {
+  &envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit,
+  &envoy_api_v2_route_RateLimit_Action_GenericKey_msginit,
+  &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit,
+  &envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit,
+  &envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit,
+  &envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RateLimit_Action__fields[6] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 5, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 4, 11, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 3, 11, 1},
+  {5, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {6, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_msginit = {
+  &envoy_api_v2_route_RateLimit_Action_submsgs[0],
+  &envoy_api_v2_route_RateLimit_Action__fields[0],
+  UPB_SIZE(8, 16), 6, false,
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RateLimit_Action_RequestHeaders__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit = {
+  NULL,
+  &envoy_api_v2_route_RateLimit_Action_RequestHeaders__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RateLimit_Action_GenericKey__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_GenericKey_msginit = {
+  NULL,
+  &envoy_api_v2_route_RateLimit_Action_GenericKey__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_submsgs[2] = {
+  &envoy_api_v2_route_HeaderMatcher_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_RateLimit_Action_HeaderValueMatch__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit = {
+  &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_submsgs[0],
+  &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_HeaderMatcher_submsgs[2] = {
+  &envoy_type_Int64Range_msginit,
+  &envoy_type_matcher_RegexMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_HeaderMatcher__fields[9] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {4, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 9, 1},
+  {5, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 9, 1},
+  {6, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 11, 1},
+  {7, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 8, 1},
+  {8, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {9, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 9, 1},
+  {10, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 0, 9, 1},
+  {11, UPB_SIZE(12, 24), UPB_SIZE(-21, -41), 1, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_HeaderMatcher_msginit = {
+  &envoy_api_v2_route_HeaderMatcher_submsgs[0],
+  &envoy_api_v2_route_HeaderMatcher__fields[0],
+  UPB_SIZE(24, 48), 9, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_route_QueryParameterMatcher_submsgs[2] = {
+  &envoy_type_matcher_StringMatcher_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_route_QueryParameterMatcher__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {3, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {4, UPB_SIZE(16, 32), 0, 1, 11, 1},
+  {5, UPB_SIZE(20, 40), UPB_SIZE(-25, -49), 0, 11, 1},
+  {6, UPB_SIZE(20, 40), UPB_SIZE(-25, -49), 0, 8, 1},
+};
+
+const upb_msglayout envoy_api_v2_route_QueryParameterMatcher_msginit = {
+  &envoy_api_v2_route_QueryParameterMatcher_submsgs[0],
+  &envoy_api_v2_route_QueryParameterMatcher__fields[0],
+  UPB_SIZE(32, 64), 5, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h
new file mode 100644
index 0000000..020c9ef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h	
@@ -0,0 +1,2960 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/route/route_components.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_
+#define ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_route_VirtualHost;
+struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry;
+struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_FilterAction;
+struct envoy_api_v2_route_Route;
+struct envoy_api_v2_route_Route_PerFilterConfigEntry;
+struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_WeightedCluster;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry;
+struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry;
+struct envoy_api_v2_route_RouteMatch;
+struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions;
+struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions;
+struct envoy_api_v2_route_CorsPolicy;
+struct envoy_api_v2_route_RouteAction;
+struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy;
+struct envoy_api_v2_route_RouteAction_HashPolicy;
+struct envoy_api_v2_route_RouteAction_HashPolicy_Header;
+struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie;
+struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties;
+struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter;
+struct envoy_api_v2_route_RouteAction_UpgradeConfig;
+struct envoy_api_v2_route_RetryPolicy;
+struct envoy_api_v2_route_RetryPolicy_RetryPriority;
+struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate;
+struct envoy_api_v2_route_RetryPolicy_RetryBackOff;
+struct envoy_api_v2_route_HedgePolicy;
+struct envoy_api_v2_route_RedirectAction;
+struct envoy_api_v2_route_DirectResponseAction;
+struct envoy_api_v2_route_Decorator;
+struct envoy_api_v2_route_Tracing;
+struct envoy_api_v2_route_VirtualCluster;
+struct envoy_api_v2_route_RateLimit;
+struct envoy_api_v2_route_RateLimit_Action;
+struct envoy_api_v2_route_RateLimit_Action_SourceCluster;
+struct envoy_api_v2_route_RateLimit_Action_DestinationCluster;
+struct envoy_api_v2_route_RateLimit_Action_RequestHeaders;
+struct envoy_api_v2_route_RateLimit_Action_RemoteAddress;
+struct envoy_api_v2_route_RateLimit_Action_GenericKey;
+struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch;
+struct envoy_api_v2_route_HeaderMatcher;
+struct envoy_api_v2_route_QueryParameterMatcher;
+typedef struct envoy_api_v2_route_VirtualHost envoy_api_v2_route_VirtualHost;
+typedef struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry envoy_api_v2_route_VirtualHost_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_FilterAction envoy_api_v2_route_FilterAction;
+typedef struct envoy_api_v2_route_Route envoy_api_v2_route_Route;
+typedef struct envoy_api_v2_route_Route_PerFilterConfigEntry envoy_api_v2_route_Route_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry envoy_api_v2_route_Route_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_WeightedCluster envoy_api_v2_route_WeightedCluster;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight envoy_api_v2_route_WeightedCluster_ClusterWeight;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry;
+typedef struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry;
+typedef struct envoy_api_v2_route_RouteMatch envoy_api_v2_route_RouteMatch;
+typedef struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions;
+typedef struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions envoy_api_v2_route_RouteMatch_TlsContextMatchOptions;
+typedef struct envoy_api_v2_route_CorsPolicy envoy_api_v2_route_CorsPolicy;
+typedef struct envoy_api_v2_route_RouteAction envoy_api_v2_route_RouteAction;
+typedef struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy envoy_api_v2_route_RouteAction_RequestMirrorPolicy;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy envoy_api_v2_route_RouteAction_HashPolicy;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_Header envoy_api_v2_route_RouteAction_HashPolicy_Header;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie envoy_api_v2_route_RouteAction_HashPolicy_Cookie;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties;
+typedef struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter;
+typedef struct envoy_api_v2_route_RouteAction_UpgradeConfig envoy_api_v2_route_RouteAction_UpgradeConfig;
+typedef struct envoy_api_v2_route_RetryPolicy envoy_api_v2_route_RetryPolicy;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryPriority envoy_api_v2_route_RetryPolicy_RetryPriority;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate envoy_api_v2_route_RetryPolicy_RetryHostPredicate;
+typedef struct envoy_api_v2_route_RetryPolicy_RetryBackOff envoy_api_v2_route_RetryPolicy_RetryBackOff;
+typedef struct envoy_api_v2_route_HedgePolicy envoy_api_v2_route_HedgePolicy;
+typedef struct envoy_api_v2_route_RedirectAction envoy_api_v2_route_RedirectAction;
+typedef struct envoy_api_v2_route_DirectResponseAction envoy_api_v2_route_DirectResponseAction;
+typedef struct envoy_api_v2_route_Decorator envoy_api_v2_route_Decorator;
+typedef struct envoy_api_v2_route_Tracing envoy_api_v2_route_Tracing;
+typedef struct envoy_api_v2_route_VirtualCluster envoy_api_v2_route_VirtualCluster;
+typedef struct envoy_api_v2_route_RateLimit envoy_api_v2_route_RateLimit;
+typedef struct envoy_api_v2_route_RateLimit_Action envoy_api_v2_route_RateLimit_Action;
+typedef struct envoy_api_v2_route_RateLimit_Action_SourceCluster envoy_api_v2_route_RateLimit_Action_SourceCluster;
+typedef struct envoy_api_v2_route_RateLimit_Action_DestinationCluster envoy_api_v2_route_RateLimit_Action_DestinationCluster;
+typedef struct envoy_api_v2_route_RateLimit_Action_RequestHeaders envoy_api_v2_route_RateLimit_Action_RequestHeaders;
+typedef struct envoy_api_v2_route_RateLimit_Action_RemoteAddress envoy_api_v2_route_RateLimit_Action_RemoteAddress;
+typedef struct envoy_api_v2_route_RateLimit_Action_GenericKey envoy_api_v2_route_RateLimit_Action_GenericKey;
+typedef struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch envoy_api_v2_route_RateLimit_Action_HeaderValueMatch;
+typedef struct envoy_api_v2_route_HeaderMatcher envoy_api_v2_route_HeaderMatcher;
+typedef struct envoy_api_v2_route_QueryParameterMatcher envoy_api_v2_route_QueryParameterMatcher;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_FilterAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit;
+extern const upb_msglayout envoy_api_v2_route_CorsPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit;
+extern const upb_msglayout envoy_api_v2_route_RouteAction_UpgradeConfig_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryPriority_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit;
+extern const upb_msglayout envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit;
+extern const upb_msglayout envoy_api_v2_route_HedgePolicy_msginit;
+extern const upb_msglayout envoy_api_v2_route_RedirectAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_DirectResponseAction_msginit;
+extern const upb_msglayout envoy_api_v2_route_Decorator_msginit;
+extern const upb_msglayout envoy_api_v2_route_Tracing_msginit;
+extern const upb_msglayout envoy_api_v2_route_VirtualCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_GenericKey_msginit;
+extern const upb_msglayout envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit;
+extern const upb_msglayout envoy_api_v2_route_HeaderMatcher_msginit;
+extern const upb_msglayout envoy_api_v2_route_QueryParameterMatcher_msginit;
+struct envoy_api_v2_core_DataSource;
+struct envoy_api_v2_core_HeaderValueOption;
+struct envoy_api_v2_core_Metadata;
+struct envoy_api_v2_core_RuntimeFractionalPercent;
+struct envoy_type_FractionalPercent;
+struct envoy_type_Int64Range;
+struct envoy_type_matcher_RegexMatcher;
+struct envoy_type_matcher_StringMatcher;
+struct envoy_type_tracing_v2_CustomTag;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_core_DataSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_HeaderValueOption_msginit;
+extern const upb_msglayout envoy_api_v2_core_Metadata_msginit;
+extern const upb_msglayout envoy_api_v2_core_RuntimeFractionalPercent_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_MOVED_PERMANENTLY = 0,
+  envoy_api_v2_route_RedirectAction_FOUND = 1,
+  envoy_api_v2_route_RedirectAction_SEE_OTHER = 2,
+  envoy_api_v2_route_RedirectAction_TEMPORARY_REDIRECT = 3,
+  envoy_api_v2_route_RedirectAction_PERMANENT_REDIRECT = 4
+} envoy_api_v2_route_RedirectAction_RedirectResponseCode;
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_SERVICE_UNAVAILABLE = 0,
+  envoy_api_v2_route_RouteAction_NOT_FOUND = 1
+} envoy_api_v2_route_RouteAction_ClusterNotFoundResponseCode;
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_PASS_THROUGH_INTERNAL_REDIRECT = 0,
+  envoy_api_v2_route_RouteAction_HANDLE_INTERNAL_REDIRECT = 1
+} envoy_api_v2_route_RouteAction_InternalRedirectAction;
+
+typedef enum {
+  envoy_api_v2_route_VirtualHost_NONE = 0,
+  envoy_api_v2_route_VirtualHost_EXTERNAL_ONLY = 1,
+  envoy_api_v2_route_VirtualHost_ALL = 2
+} envoy_api_v2_route_VirtualHost_TlsRequirementType;
+
+
+/* envoy.api.v2.route.VirtualHost */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost *envoy_api_v2_route_VirtualHost_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost *)upb_msg_new(&envoy_api_v2_route_VirtualHost_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost *envoy_api_v2_route_VirtualHost_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost *ret = envoy_api_v2_route_VirtualHost_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_serialize(const envoy_api_v2_route_VirtualHost *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_name(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_domains(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const envoy_api_v2_route_Route* const* envoy_api_v2_route_VirtualHost_routes(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_Route* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE int32_t envoy_api_v2_route_VirtualHost_require_tls(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_VirtualCluster* const* envoy_api_v2_route_VirtualHost_virtual_clusters(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualCluster* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE const envoy_api_v2_route_RateLimit* const* envoy_api_v2_route_VirtualHost_rate_limits(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit* const*)_upb_array_accessor(msg, UPB_SIZE(48, 88), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_VirtualHost_request_headers_to_add(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(52, 96), len); }
+UPB_INLINE const envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_VirtualHost_cors(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_CorsPolicy*, UPB_SIZE(20, 32)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_VirtualHost_response_headers_to_add(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(56, 104), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_response_headers_to_remove(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(60, 112), len); }
+UPB_INLINE const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* const* envoy_api_v2_route_VirtualHost_per_filter_config(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(64, 120), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_VirtualHost_request_headers_to_remove(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(68, 128), len); }
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_include_request_attempt_count(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* const* envoy_api_v2_route_VirtualHost_typed_per_filter_config(const envoy_api_v2_route_VirtualHost *msg, size_t *len) { return (const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(72, 136), len); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_VirtualHost_retry_policy(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_VirtualHost_hedge_policy(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_HedgePolicy*, UPB_SIZE(28, 48)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_VirtualHost_per_request_buffer_limit_bytes(const envoy_api_v2_route_VirtualHost *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_name(envoy_api_v2_route_VirtualHost *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_domains(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_domains(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_domains(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route** envoy_api_v2_route_VirtualHost_mutable_routes(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_Route**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_Route** envoy_api_v2_route_VirtualHost_resize_routes(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route* envoy_api_v2_route_VirtualHost_add_routes(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route* sub = (struct envoy_api_v2_route_Route*)upb_msg_new(&envoy_api_v2_route_Route_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_require_tls(envoy_api_v2_route_VirtualHost *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster** envoy_api_v2_route_VirtualHost_mutable_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualCluster**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster** envoy_api_v2_route_VirtualHost_resize_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualCluster**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualCluster* envoy_api_v2_route_VirtualHost_add_virtual_clusters(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualCluster* sub = (struct envoy_api_v2_route_VirtualCluster*)upb_msg_new(&envoy_api_v2_route_VirtualCluster_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_VirtualHost_mutable_rate_limits(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 88), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_VirtualHost_resize_rate_limits(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit* envoy_api_v2_route_VirtualHost_add_rate_limits(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit* sub = (struct envoy_api_v2_route_RateLimit*)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_mutable_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 96), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_resize_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(52, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_VirtualHost_add_request_headers_to_add(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_cors(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_CorsPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_CorsPolicy*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_VirtualHost_mutable_cors(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_CorsPolicy* sub = (struct envoy_api_v2_route_CorsPolicy*)envoy_api_v2_route_VirtualHost_cors(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_CorsPolicy*)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_cors(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_mutable_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 104), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_VirtualHost_resize_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_VirtualHost_add_response_headers_to_add(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(60, 112), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(60, 112), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_response_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(60, 112), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry** envoy_api_v2_route_VirtualHost_mutable_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(64, 120), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry** envoy_api_v2_route_VirtualHost_resize_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(64, 120), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* envoy_api_v2_route_VirtualHost_add_per_filter_config(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_VirtualHost_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(64, 120), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_mutable_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(68, 128), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_VirtualHost_resize_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(68, 128), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_VirtualHost_add_request_headers_to_remove(envoy_api_v2_route_VirtualHost *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(68, 128), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_include_request_attempt_count(envoy_api_v2_route_VirtualHost *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry** envoy_api_v2_route_VirtualHost_mutable_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t *len) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(72, 136), len);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry** envoy_api_v2_route_VirtualHost_resize_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(72, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* envoy_api_v2_route_VirtualHost_add_typed_per_filter_config(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(72, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_retry_policy(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_RetryPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_VirtualHost_mutable_retry_policy(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy* sub = (struct envoy_api_v2_route_RetryPolicy*)envoy_api_v2_route_VirtualHost_retry_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_retry_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_hedge_policy(envoy_api_v2_route_VirtualHost *msg, envoy_api_v2_route_HedgePolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_HedgePolicy*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_VirtualHost_mutable_hedge_policy(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HedgePolicy* sub = (struct envoy_api_v2_route_HedgePolicy*)envoy_api_v2_route_VirtualHost_hedge_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HedgePolicy*)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_hedge_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_set_per_request_buffer_limit_bytes(envoy_api_v2_route_VirtualHost *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_VirtualHost_mutable_per_request_buffer_limit_bytes(envoy_api_v2_route_VirtualHost *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_VirtualHost_per_request_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_set_per_request_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualHost.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *ret = envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_serialize(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_key(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_value(const envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_key(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_value(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_VirtualHost_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualHost.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_VirtualHost_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.FilterAction */
+
+UPB_INLINE envoy_api_v2_route_FilterAction *envoy_api_v2_route_FilterAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_FilterAction *)upb_msg_new(&envoy_api_v2_route_FilterAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_FilterAction *envoy_api_v2_route_FilterAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_FilterAction *ret = envoy_api_v2_route_FilterAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_FilterAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_FilterAction_serialize(const envoy_api_v2_route_FilterAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_FilterAction_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_FilterAction_action(const envoy_api_v2_route_FilterAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_FilterAction_set_action(envoy_api_v2_route_FilterAction *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_FilterAction_mutable_action(envoy_api_v2_route_FilterAction *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_FilterAction_action(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_FilterAction_set_action(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route */
+
+UPB_INLINE envoy_api_v2_route_Route *envoy_api_v2_route_Route_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route *)upb_msg_new(&envoy_api_v2_route_Route_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route *envoy_api_v2_route_Route_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route *ret = envoy_api_v2_route_Route_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_serialize(const envoy_api_v2_route_Route *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_Route_action_route = 2,
+  envoy_api_v2_route_Route_action_redirect = 3,
+  envoy_api_v2_route_Route_action_direct_response = 7,
+  envoy_api_v2_route_Route_action_filter_action = 17,
+  envoy_api_v2_route_Route_action_NOT_SET = 0
+} envoy_api_v2_route_Route_action_oneofcases;
+UPB_INLINE envoy_api_v2_route_Route_action_oneofcases envoy_api_v2_route_Route_action_case(const envoy_api_v2_route_Route* msg) { return (envoy_api_v2_route_Route_action_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE const envoy_api_v2_route_RouteMatch* envoy_api_v2_route_Route_match(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_route(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 2); }
+UPB_INLINE const envoy_api_v2_route_RouteAction* envoy_api_v2_route_Route_route(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_redirect(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 3); }
+UPB_INLINE const envoy_api_v2_route_RedirectAction* envoy_api_v2_route_Route_redirect(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RedirectAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 3, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_Route_metadata(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)); }
+UPB_INLINE const envoy_api_v2_route_Decorator* envoy_api_v2_route_Route_decorator(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_Decorator*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_direct_response(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE const envoy_api_v2_route_DirectResponseAction* envoy_api_v2_route_Route_direct_response(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_DirectResponseAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 7, NULL); }
+UPB_INLINE const envoy_api_v2_route_Route_PerFilterConfigEntry* const* envoy_api_v2_route_Route_per_filter_config(const envoy_api_v2_route_Route *msg, size_t *len) { return (const envoy_api_v2_route_Route_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_Route_request_headers_to_add(const envoy_api_v2_route_Route *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_Route_response_headers_to_add(const envoy_api_v2_route_Route *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_Route_response_headers_to_remove(const envoy_api_v2_route_Route *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_Route_request_headers_to_remove(const envoy_api_v2_route_Route *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE const envoy_api_v2_route_Route_TypedPerFilterConfigEntry* const* envoy_api_v2_route_Route_typed_per_filter_config(const envoy_api_v2_route_Route *msg, size_t *len) { return (const envoy_api_v2_route_Route_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_Route_name(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_Tracing* envoy_api_v2_route_Route_tracing(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_Tracing*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_Route_per_request_buffer_limit_bytes(const envoy_api_v2_route_Route *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)); }
+UPB_INLINE bool envoy_api_v2_route_Route_has_filter_action(const envoy_api_v2_route_Route *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 17); }
+UPB_INLINE const envoy_api_v2_route_FilterAction* envoy_api_v2_route_Route_filter_action(const envoy_api_v2_route_Route *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_FilterAction*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 17, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_Route_set_match(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RouteMatch* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch* envoy_api_v2_route_Route_mutable_match(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch* sub = (struct envoy_api_v2_route_RouteMatch*)envoy_api_v2_route_Route_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch*)upb_msg_new(&envoy_api_v2_route_RouteMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_route(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RouteAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction* envoy_api_v2_route_Route_mutable_route(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction* sub = (struct envoy_api_v2_route_RouteAction*)envoy_api_v2_route_Route_route(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction*)upb_msg_new(&envoy_api_v2_route_RouteAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_route(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_redirect(envoy_api_v2_route_Route *msg, envoy_api_v2_route_RedirectAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RedirectAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RedirectAction* envoy_api_v2_route_Route_mutable_redirect(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RedirectAction* sub = (struct envoy_api_v2_route_RedirectAction*)envoy_api_v2_route_Route_redirect(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RedirectAction*)upb_msg_new(&envoy_api_v2_route_RedirectAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_redirect(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_metadata(envoy_api_v2_route_Route *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_Route_mutable_metadata(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_Route_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_metadata(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_decorator(envoy_api_v2_route_Route *msg, envoy_api_v2_route_Decorator* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_Decorator*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_Decorator* envoy_api_v2_route_Route_mutable_decorator(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Decorator* sub = (struct envoy_api_v2_route_Decorator*)envoy_api_v2_route_Route_decorator(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_Decorator*)upb_msg_new(&envoy_api_v2_route_Decorator_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_decorator(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_direct_response(envoy_api_v2_route_Route *msg, envoy_api_v2_route_DirectResponseAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_DirectResponseAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE struct envoy_api_v2_route_DirectResponseAction* envoy_api_v2_route_Route_mutable_direct_response(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_DirectResponseAction* sub = (struct envoy_api_v2_route_DirectResponseAction*)envoy_api_v2_route_Route_direct_response(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_DirectResponseAction*)upb_msg_new(&envoy_api_v2_route_DirectResponseAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_direct_response(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry** envoy_api_v2_route_Route_mutable_per_filter_config(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry** envoy_api_v2_route_Route_resize_per_filter_config(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route_PerFilterConfigEntry* envoy_api_v2_route_Route_add_per_filter_config(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_Route_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_mutable_request_headers_to_add(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_resize_request_headers_to_add(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_Route_add_request_headers_to_add(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_mutable_response_headers_to_add(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_Route_resize_response_headers_to_add(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_Route_add_response_headers_to_add(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_mutable_response_headers_to_remove(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_resize_response_headers_to_remove(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_Route_add_response_headers_to_remove(envoy_api_v2_route_Route *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_mutable_request_headers_to_remove(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_Route_resize_request_headers_to_remove(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_Route_add_request_headers_to_remove(envoy_api_v2_route_Route *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry** envoy_api_v2_route_Route_mutable_typed_per_filter_config(envoy_api_v2_route_Route *msg, size_t *len) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry** envoy_api_v2_route_Route_resize_typed_per_filter_config(envoy_api_v2_route_Route *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry* envoy_api_v2_route_Route_add_typed_per_filter_config(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_Route_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_name(envoy_api_v2_route_Route *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_tracing(envoy_api_v2_route_Route *msg, envoy_api_v2_route_Tracing* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_Tracing*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_Tracing* envoy_api_v2_route_Route_mutable_tracing(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_Tracing* sub = (struct envoy_api_v2_route_Tracing*)envoy_api_v2_route_Route_tracing(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_Tracing*)upb_msg_new(&envoy_api_v2_route_Tracing_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_tracing(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_per_request_buffer_limit_bytes(envoy_api_v2_route_Route *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_Route_mutable_per_request_buffer_limit_bytes(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_Route_per_request_buffer_limit_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_per_request_buffer_limit_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Route_set_filter_action(envoy_api_v2_route_Route *msg, envoy_api_v2_route_FilterAction* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_FilterAction*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 17);
+}
+UPB_INLINE struct envoy_api_v2_route_FilterAction* envoy_api_v2_route_Route_mutable_filter_action(envoy_api_v2_route_Route *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_FilterAction* sub = (struct envoy_api_v2_route_FilterAction*)envoy_api_v2_route_Route_filter_action(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_FilterAction*)upb_msg_new(&envoy_api_v2_route_FilterAction_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_set_filter_action(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry *envoy_api_v2_route_Route_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_PerFilterConfigEntry *envoy_api_v2_route_Route_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route_PerFilterConfigEntry *ret = envoy_api_v2_route_Route_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_PerFilterConfigEntry_serialize(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Route_PerFilterConfigEntry_key(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_Route_PerFilterConfigEntry_value(const envoy_api_v2_route_Route_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Route_PerFilterConfigEntry_set_key(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_PerFilterConfigEntry_set_value(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_Route_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_Route_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_Route_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Route.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Route_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Route_TypedPerFilterConfigEntry *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Route_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_Route_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Route_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Route_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Route_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_Route_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_Route_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_Route_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_Route_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Route_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster *envoy_api_v2_route_WeightedCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster *envoy_api_v2_route_WeightedCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster *ret = envoy_api_v2_route_WeightedCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_serialize(const envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight* const* envoy_api_v2_route_WeightedCluster_clusters(const envoy_api_v2_route_WeightedCluster *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_runtime_key_prefix(const envoy_api_v2_route_WeightedCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_total_weight(const envoy_api_v2_route_WeightedCluster *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight** envoy_api_v2_route_WeightedCluster_mutable_clusters(envoy_api_v2_route_WeightedCluster *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight** envoy_api_v2_route_WeightedCluster_resize_clusters(envoy_api_v2_route_WeightedCluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight* envoy_api_v2_route_WeightedCluster_add_clusters(envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_set_runtime_key_prefix(envoy_api_v2_route_WeightedCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_set_total_weight(envoy_api_v2_route_WeightedCluster *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_mutable_total_weight(envoy_api_v2_route_WeightedCluster *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_WeightedCluster_total_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_set_total_weight(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight *envoy_api_v2_route_WeightedCluster_ClusterWeight_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight *envoy_api_v2_route_WeightedCluster_ClusterWeight_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_name(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_ClusterWeight_weight(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_WeightedCluster_ClusterWeight_metadata_match(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_request_headers_to_add(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const struct envoy_api_v2_core_HeaderValueOption* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_response_headers_to_add(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const struct envoy_api_v2_core_HeaderValueOption* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_WeightedCluster_ClusterWeight_response_headers_to_remove(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_per_filter_config(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_WeightedCluster_ClusterWeight_request_headers_to_remove(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* const* envoy_api_v2_route_WeightedCluster_ClusterWeight_typed_per_filter_config(const envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) { return (const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_name(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_weight(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_weight(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_WeightedCluster_ClusterWeight_weight(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_set_weight(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_set_metadata_match(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_metadata_match(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_WeightedCluster_ClusterWeight_metadata_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_set_metadata_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_request_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_core_HeaderValueOption**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_core_HeaderValueOption* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_response_headers_to_add(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HeaderValueOption* sub = (struct envoy_api_v2_core_HeaderValueOption*)upb_msg_new(&envoy_api_v2_core_HeaderValueOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_WeightedCluster_ClusterWeight_add_response_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_WeightedCluster_ClusterWeight_add_request_headers_to_remove(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_mutable_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t *len) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry** envoy_api_v2_route_WeightedCluster_ClusterWeight_resize_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* envoy_api_v2_route_WeightedCluster_ClusterWeight_add_typed_per_filter_config(envoy_api_v2_route_WeightedCluster_ClusterWeight *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry* sub = (struct envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight.PerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_key(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_value(const envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_key(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, struct google_protobuf_Struct* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_mutable_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_PerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.WeightedCluster.ClusterWeight.TypedPerFilterConfigEntry */
+
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_new(upb_arena *arena) {
+  return (envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *)upb_msg_new(&envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *ret = envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_serialize(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_key(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_value(const envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_key(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_mutable_value(envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_WeightedCluster_ClusterWeight_TypedPerFilterConfigEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteMatch */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch *envoy_api_v2_route_RouteMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch *)upb_msg_new(&envoy_api_v2_route_RouteMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch *envoy_api_v2_route_RouteMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch *ret = envoy_api_v2_route_RouteMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_serialize(const envoy_api_v2_route_RouteMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteMatch_path_specifier_prefix = 1,
+  envoy_api_v2_route_RouteMatch_path_specifier_path = 2,
+  envoy_api_v2_route_RouteMatch_path_specifier_regex = 3,
+  envoy_api_v2_route_RouteMatch_path_specifier_safe_regex = 10,
+  envoy_api_v2_route_RouteMatch_path_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteMatch_path_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteMatch_path_specifier_oneofcases envoy_api_v2_route_RouteMatch_path_specifier_case(const envoy_api_v2_route_RouteMatch* msg) { return (envoy_api_v2_route_RouteMatch_path_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(32, 64)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_prefix(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 1); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_prefix(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_path(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_path(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_regex(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 3); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteMatch_regex(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_case_sensitive(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RouteMatch_headers(const envoy_api_v2_route_RouteMatch *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const envoy_api_v2_route_QueryParameterMatcher* const* envoy_api_v2_route_RouteMatch_query_parameters(const envoy_api_v2_route_RouteMatch *msg, size_t *len) { return (const envoy_api_v2_route_QueryParameterMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* envoy_api_v2_route_RouteMatch_grpc(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteMatch_runtime_fraction(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_RouteMatch_has_safe_regex(const envoy_api_v2_route_RouteMatch *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 64), 10); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_RouteMatch_safe_regex(const envoy_api_v2_route_RouteMatch *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(24, 48), UPB_SIZE(32, 64), 10, NULL); }
+UPB_INLINE const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* envoy_api_v2_route_RouteMatch_tls_context(const envoy_api_v2_route_RouteMatch *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_prefix(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 1);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_path(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_regex(envoy_api_v2_route_RouteMatch *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 3);
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_case_sensitive(envoy_api_v2_route_RouteMatch *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_mutable_case_sensitive(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_case_sensitive(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_case_sensitive(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RouteMatch_mutable_headers(envoy_api_v2_route_RouteMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RouteMatch_resize_headers(envoy_api_v2_route_RouteMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RouteMatch_add_headers(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher** envoy_api_v2_route_RouteMatch_mutable_query_parameters(envoy_api_v2_route_RouteMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_QueryParameterMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher** envoy_api_v2_route_RouteMatch_resize_query_parameters(envoy_api_v2_route_RouteMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_QueryParameterMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_QueryParameterMatcher* envoy_api_v2_route_RouteMatch_add_query_parameters(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_QueryParameterMatcher* sub = (struct envoy_api_v2_route_QueryParameterMatcher*)upb_msg_new(&envoy_api_v2_route_QueryParameterMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_grpc(envoy_api_v2_route_RouteMatch *msg, envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* envoy_api_v2_route_RouteMatch_mutable_grpc(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions* sub = (struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*)envoy_api_v2_route_RouteMatch_grpc(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions*)upb_msg_new(&envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_grpc(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_runtime_fraction(envoy_api_v2_route_RouteMatch *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteMatch_mutable_runtime_fraction(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_RouteMatch_runtime_fraction(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_runtime_fraction(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_safe_regex(envoy_api_v2_route_RouteMatch *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(24, 48), value, UPB_SIZE(32, 64), 10);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_RouteMatch_mutable_safe_regex(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_api_v2_route_RouteMatch_safe_regex(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_safe_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_set_tls_context(envoy_api_v2_route_RouteMatch *msg, envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* envoy_api_v2_route_RouteMatch_mutable_tls_context(envoy_api_v2_route_RouteMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions* sub = (struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*)envoy_api_v2_route_RouteMatch_tls_context(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteMatch_TlsContextMatchOptions*)upb_msg_new(&envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_set_tls_context(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteMatch.GrpcRouteMatchOptions */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *)upb_msg_new(&envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *ret = envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_serialize(const envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_GrpcRouteMatchOptions_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RouteMatch.TlsContextMatchOptions */
+
+UPB_INLINE envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *)upb_msg_new(&envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *ret = envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_serialize(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_presented(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_validated(const envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_presented(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_mutable_presented(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_presented(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_presented(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_validated(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_mutable_validated(envoy_api_v2_route_RouteMatch_TlsContextMatchOptions *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_validated(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteMatch_TlsContextMatchOptions_set_validated(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.CorsPolicy */
+
+UPB_INLINE envoy_api_v2_route_CorsPolicy *envoy_api_v2_route_CorsPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_CorsPolicy *)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_CorsPolicy *envoy_api_v2_route_CorsPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_CorsPolicy *ret = envoy_api_v2_route_CorsPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_CorsPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_CorsPolicy_serialize(const envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_CorsPolicy_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_enabled = 7,
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_filter_enabled = 9,
+  envoy_api_v2_route_CorsPolicy_enabled_specifier_NOT_SET = 0
+} envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases envoy_api_v2_route_CorsPolicy_enabled_specifier_case(const envoy_api_v2_route_CorsPolicy* msg) { return (envoy_api_v2_route_CorsPolicy_enabled_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(56, 112)); }
+
+UPB_INLINE upb_strview const* envoy_api_v2_route_CorsPolicy_allow_origin(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_allow_methods(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_allow_headers(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_expose_headers(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_route_CorsPolicy_max_age(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_allow_credentials(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(32, 64)); }
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_has_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 7); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 7, NULL); }
+UPB_INLINE upb_strview const* envoy_api_v2_route_CorsPolicy_allow_origin_regex(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_has_filter_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(56, 112), 9); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_filter_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_READ_ONEOF(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(52, 104), UPB_SIZE(56, 112), 9, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_shadow_enabled(const envoy_api_v2_route_CorsPolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(36, 72)); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* const* envoy_api_v2_route_CorsPolicy_allow_origin_string_match(const envoy_api_v2_route_CorsPolicy *msg, size_t *len) { return (const struct envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_mutable_allow_origin(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_resize_allow_origin(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_add_allow_origin(envoy_api_v2_route_CorsPolicy *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_methods(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_headers(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_expose_headers(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_max_age(envoy_api_v2_route_CorsPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 48)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_allow_credentials(envoy_api_v2_route_CorsPolicy *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_mutable_allow_credentials(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_CorsPolicy_allow_credentials(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_allow_credentials(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_enabled(envoy_api_v2_route_CorsPolicy *msg, struct google_protobuf_BoolValue* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_BoolValue*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 7);
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_CorsPolicy_mutable_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_CorsPolicy_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_mutable_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* envoy_api_v2_route_CorsPolicy_resize_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_CorsPolicy_add_allow_origin_regex(envoy_api_v2_route_CorsPolicy *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_filter_enabled(envoy_api_v2_route_CorsPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(52, 104), value, UPB_SIZE(56, 112), 9);
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_mutable_filter_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_CorsPolicy_filter_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_filter_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_CorsPolicy_set_shadow_enabled(envoy_api_v2_route_CorsPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(36, 72)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_CorsPolicy_mutable_shadow_enabled(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_CorsPolicy_shadow_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_CorsPolicy_set_shadow_enabled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_route_CorsPolicy_mutable_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, size_t *len) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher** envoy_api_v2_route_CorsPolicy_resize_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_CorsPolicy_add_allow_origin_string_match(envoy_api_v2_route_CorsPolicy *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction */
+
+UPB_INLINE envoy_api_v2_route_RouteAction *envoy_api_v2_route_RouteAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction *)upb_msg_new(&envoy_api_v2_route_RouteAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction *envoy_api_v2_route_RouteAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction *ret = envoy_api_v2_route_RouteAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_serialize(const envoy_api_v2_route_RouteAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_cluster_specifier_cluster = 1,
+  envoy_api_v2_route_RouteAction_cluster_specifier_cluster_header = 2,
+  envoy_api_v2_route_RouteAction_cluster_specifier_weighted_clusters = 3,
+  envoy_api_v2_route_RouteAction_cluster_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases envoy_api_v2_route_RouteAction_cluster_specifier_case(const envoy_api_v2_route_RouteAction* msg) { return (envoy_api_v2_route_RouteAction_cluster_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(100, 176)); }
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_host_rewrite = 6,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_auto_host_rewrite = 7,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_auto_host_rewrite_header = 29,
+  envoy_api_v2_route_RouteAction_host_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases envoy_api_v2_route_RouteAction_host_rewrite_specifier_case(const envoy_api_v2_route_RouteAction* msg) { return (envoy_api_v2_route_RouteAction_host_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(112, 200)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_cluster(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 1); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_cluster(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_cluster_header(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_cluster_header(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_weighted_clusters(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(100, 176), 3); }
+UPB_INLINE const envoy_api_v2_route_WeightedCluster* envoy_api_v2_route_RouteAction_weighted_clusters(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_WeightedCluster*, UPB_SIZE(92, 160), UPB_SIZE(100, 176), 3, NULL); }
+UPB_INLINE const struct envoy_api_v2_core_Metadata* envoy_api_v2_route_RouteAction_metadata_match(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Metadata*, UPB_SIZE(32, 40)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_prefix_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 6); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 6, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_auto_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 7); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_auto_host_rewrite(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 7, NULL); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(36, 48)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_RouteAction_retry_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy*, UPB_SIZE(40, 56)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_request_mirror_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RouteAction_RequestMirrorPolicy*, UPB_SIZE(44, 64)); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_priority(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_RateLimit* const* envoy_api_v2_route_RouteAction_rate_limits(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit* const*)_upb_array_accessor(msg, UPB_SIZE(76, 128), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_include_vh_rate_limits(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(48, 72)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy* const* envoy_api_v2_route_RouteAction_hash_policy(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_HashPolicy* const*)_upb_array_accessor(msg, UPB_SIZE(80, 136), len); }
+UPB_INLINE const envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_RouteAction_cors(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_CorsPolicy*, UPB_SIZE(52, 80)); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_cluster_not_found_response_code(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_max_grpc_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(56, 88)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_idle_timeout(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(60, 96)); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_UpgradeConfig* const* envoy_api_v2_route_RouteAction_upgrade_configs(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_UpgradeConfig* const*)_upb_array_accessor(msg, UPB_SIZE(84, 144), len); }
+UPB_INLINE int32_t envoy_api_v2_route_RouteAction_internal_redirect_action(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_RouteAction_hedge_policy(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_HedgePolicy*, UPB_SIZE(64, 104)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_grpc_timeout_offset(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(68, 112)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_has_auto_host_rewrite_header(const envoy_api_v2_route_RouteAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(112, 200), 29); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_auto_host_rewrite_header(const envoy_api_v2_route_RouteAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), UPB_SIZE(112, 200), 29, upb_strview_make("", strlen(""))); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* const* envoy_api_v2_route_RouteAction_request_mirror_policies(const envoy_api_v2_route_RouteAction *msg, size_t *len) { return (const envoy_api_v2_route_RouteAction_RequestMirrorPolicy* const*)_upb_array_accessor(msg, UPB_SIZE(88, 152), len); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RouteAction_max_internal_redirects(const envoy_api_v2_route_RouteAction *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(72, 120)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 1);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster_header(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_weighted_clusters(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_WeightedCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_WeightedCluster*, UPB_SIZE(92, 160), value, UPB_SIZE(100, 176), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_WeightedCluster* envoy_api_v2_route_RouteAction_mutable_weighted_clusters(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_WeightedCluster* sub = (struct envoy_api_v2_route_WeightedCluster*)envoy_api_v2_route_RouteAction_weighted_clusters(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_WeightedCluster*)upb_msg_new(&envoy_api_v2_route_WeightedCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_weighted_clusters(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_metadata_match(envoy_api_v2_route_RouteAction *msg, struct envoy_api_v2_core_Metadata* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Metadata*, UPB_SIZE(32, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Metadata* envoy_api_v2_route_RouteAction_mutable_metadata_match(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Metadata* sub = (struct envoy_api_v2_core_Metadata*)envoy_api_v2_route_RouteAction_metadata_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Metadata*)upb_msg_new(&envoy_api_v2_core_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_metadata_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_prefix_rewrite(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_host_rewrite(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 6);
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_auto_host_rewrite(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_BoolValue* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_BoolValue*, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 7);
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_mutable_auto_host_rewrite(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_auto_host_rewrite(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_auto_host_rewrite(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(36, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_retry_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_RetryPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy*, UPB_SIZE(40, 56)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy* envoy_api_v2_route_RouteAction_mutable_retry_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy* sub = (struct envoy_api_v2_route_RetryPolicy*)envoy_api_v2_route_RouteAction_retry_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_retry_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_request_mirror_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_RouteAction_RequestMirrorPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RouteAction_RequestMirrorPolicy*, UPB_SIZE(44, 64)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_mutable_request_mirror_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)envoy_api_v2_route_RouteAction_request_mirror_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_request_mirror_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_priority(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_RouteAction_mutable_rate_limits(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 128), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit** envoy_api_v2_route_RouteAction_resize_rate_limits(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit**)_upb_array_resize_accessor(msg, UPB_SIZE(76, 128), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit* envoy_api_v2_route_RouteAction_add_rate_limits(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit* sub = (struct envoy_api_v2_route_RateLimit*)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 128), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_include_vh_rate_limits(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(48, 72)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_mutable_include_vh_rate_limits(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_include_vh_rate_limits(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_include_vh_rate_limits(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy** envoy_api_v2_route_RouteAction_mutable_hash_policy(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy**)_upb_array_mutable_accessor(msg, UPB_SIZE(80, 136), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy** envoy_api_v2_route_RouteAction_resize_hash_policy(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy**)_upb_array_resize_accessor(msg, UPB_SIZE(80, 136), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy* envoy_api_v2_route_RouteAction_add_hash_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(80, 136), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cors(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_CorsPolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_CorsPolicy*, UPB_SIZE(52, 80)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_CorsPolicy* envoy_api_v2_route_RouteAction_mutable_cors(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_CorsPolicy* sub = (struct envoy_api_v2_route_CorsPolicy*)envoy_api_v2_route_RouteAction_cors(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_CorsPolicy*)upb_msg_new(&envoy_api_v2_route_CorsPolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_cors(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_cluster_not_found_response_code(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_max_grpc_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(56, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_max_grpc_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_max_grpc_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_max_grpc_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_idle_timeout(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(60, 96)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_idle_timeout(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig** envoy_api_v2_route_RouteAction_mutable_upgrade_configs(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(84, 144), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig** envoy_api_v2_route_RouteAction_resize_upgrade_configs(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(84, 144), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_UpgradeConfig* envoy_api_v2_route_RouteAction_add_upgrade_configs(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_UpgradeConfig* sub = (struct envoy_api_v2_route_RouteAction_UpgradeConfig*)upb_msg_new(&envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(84, 144), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_internal_redirect_action(envoy_api_v2_route_RouteAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_hedge_policy(envoy_api_v2_route_RouteAction *msg, envoy_api_v2_route_HedgePolicy* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_HedgePolicy*, UPB_SIZE(64, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HedgePolicy* envoy_api_v2_route_RouteAction_mutable_hedge_policy(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HedgePolicy* sub = (struct envoy_api_v2_route_HedgePolicy*)envoy_api_v2_route_RouteAction_hedge_policy(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HedgePolicy*)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_hedge_policy(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_grpc_timeout_offset(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(68, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_mutable_grpc_timeout_offset(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_grpc_timeout_offset(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_grpc_timeout_offset(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_auto_host_rewrite_header(envoy_api_v2_route_RouteAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(104, 184), value, UPB_SIZE(112, 200), 29);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy** envoy_api_v2_route_RouteAction_mutable_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, size_t *len) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy**)_upb_array_mutable_accessor(msg, UPB_SIZE(88, 152), len);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy** envoy_api_v2_route_RouteAction_resize_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy**)_upb_array_resize_accessor(msg, UPB_SIZE(88, 152), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* envoy_api_v2_route_RouteAction_add_request_mirror_policies(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy* sub = (struct envoy_api_v2_route_RouteAction_RequestMirrorPolicy*)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(88, 152), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_set_max_internal_redirects(envoy_api_v2_route_RouteAction *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(72, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RouteAction_mutable_max_internal_redirects(envoy_api_v2_route_RouteAction *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RouteAction_max_internal_redirects(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_set_max_internal_redirects(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.RequestMirrorPolicy */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_RequestMirrorPolicy *)upb_msg_new(&envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_RequestMirrorPolicy *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_RequestMirrorPolicy *ret = envoy_api_v2_route_RouteAction_RequestMirrorPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_RequestMirrorPolicy_serialize(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_RequestMirrorPolicy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_RequestMirrorPolicy_cluster(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_key(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_fraction(const envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_cluster(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_key(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_fraction(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, struct envoy_api_v2_core_RuntimeFractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeFractionalPercent*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeFractionalPercent* envoy_api_v2_route_RouteAction_RequestMirrorPolicy_mutable_runtime_fraction(envoy_api_v2_route_RouteAction_RequestMirrorPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeFractionalPercent* sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)envoy_api_v2_route_RouteAction_RequestMirrorPolicy_runtime_fraction(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeFractionalPercent*)upb_msg_new(&envoy_api_v2_core_RuntimeFractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_RequestMirrorPolicy_set_runtime_fraction(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy *envoy_api_v2_route_RouteAction_HashPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy *envoy_api_v2_route_RouteAction_HashPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy *ret = envoy_api_v2_route_RouteAction_HashPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_serialize(const envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_header = 1,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_cookie = 2,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_connection_properties = 3,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_query_parameter = 5,
+  envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_NOT_SET = 0
+} envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_case(const envoy_api_v2_route_RouteAction_HashPolicy* msg) { return (envoy_api_v2_route_RouteAction_HashPolicy_policy_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_header(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_Header* envoy_api_v2_route_RouteAction_HashPolicy_header(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_Header*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_cookie(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_Cookie* envoy_api_v2_route_RouteAction_HashPolicy_cookie(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_Cookie*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_connection_properties(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* envoy_api_v2_route_RouteAction_HashPolicy_connection_properties(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_terminal(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_has_query_parameter(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* envoy_api_v2_route_RouteAction_HashPolicy_query_parameter(const envoy_api_v2_route_RouteAction_HashPolicy *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*, UPB_SIZE(4, 8), UPB_SIZE(8, 16), 5, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_header(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_Header* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_Header*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_Header* envoy_api_v2_route_RouteAction_HashPolicy_mutable_header(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_Header* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Header*)envoy_api_v2_route_RouteAction_HashPolicy_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Header*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_cookie(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_Cookie* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_Cookie*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie* envoy_api_v2_route_RouteAction_HashPolicy_mutable_cookie(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie*)envoy_api_v2_route_RouteAction_HashPolicy_cookie(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_Cookie*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_cookie(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_connection_properties(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* envoy_api_v2_route_RouteAction_HashPolicy_mutable_connection_properties(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*)envoy_api_v2_route_RouteAction_HashPolicy_connection_properties(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_connection_properties(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_terminal(envoy_api_v2_route_RouteAction_HashPolicy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_set_query_parameter(envoy_api_v2_route_RouteAction_HashPolicy *msg, envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*, UPB_SIZE(4, 8), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* envoy_api_v2_route_RouteAction_HashPolicy_mutable_query_parameter(envoy_api_v2_route_RouteAction_HashPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter* sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*)envoy_api_v2_route_RouteAction_HashPolicy_query_parameter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter*)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_set_query_parameter(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.Header */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Header *envoy_api_v2_route_RouteAction_HashPolicy_Header_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_Header *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Header *envoy_api_v2_route_RouteAction_HashPolicy_Header_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_Header *ret = envoy_api_v2_route_RouteAction_HashPolicy_Header_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_Header_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_Header *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_Header_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Header_header_name(const envoy_api_v2_route_RouteAction_HashPolicy_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Header_set_header_name(envoy_api_v2_route_RouteAction_HashPolicy_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.Cookie */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Cookie *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_Cookie *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_Cookie *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_Cookie *ret = envoy_api_v2_route_RouteAction_HashPolicy_Cookie_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_Cookie_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_Cookie_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Cookie_name(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_HashPolicy_Cookie_ttl(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 32)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_Cookie_path(const envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_name(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_ttl(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RouteAction_HashPolicy_Cookie_mutable_ttl(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RouteAction_HashPolicy_Cookie_ttl(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_ttl(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_Cookie_set_path(envoy_api_v2_route_RouteAction_HashPolicy_Cookie *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.ConnectionProperties */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *ret = envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_source_ip(const envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties_set_source_ip(envoy_api_v2_route_RouteAction_HashPolicy_ConnectionProperties *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.HashPolicy.QueryParameter */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *)upb_msg_new(&envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *ret = envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_serialize(const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_name(const envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter_set_name(envoy_api_v2_route_RouteAction_HashPolicy_QueryParameter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RouteAction.UpgradeConfig */
+
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig *envoy_api_v2_route_RouteAction_UpgradeConfig_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RouteAction_UpgradeConfig *)upb_msg_new(&envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RouteAction_UpgradeConfig *envoy_api_v2_route_RouteAction_UpgradeConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RouteAction_UpgradeConfig *ret = envoy_api_v2_route_RouteAction_UpgradeConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RouteAction_UpgradeConfig_serialize(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RouteAction_UpgradeConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RouteAction_UpgradeConfig_upgrade_type(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_UpgradeConfig_enabled(const envoy_api_v2_route_RouteAction_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RouteAction_UpgradeConfig_set_upgrade_type(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RouteAction_UpgradeConfig_set_enabled(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RouteAction_UpgradeConfig_mutable_enabled(envoy_api_v2_route_RouteAction_UpgradeConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RouteAction_UpgradeConfig_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RouteAction_UpgradeConfig_set_enabled(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy *envoy_api_v2_route_RetryPolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy *envoy_api_v2_route_RetryPolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy *ret = envoy_api_v2_route_RetryPolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_serialize(const envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_retry_on(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RetryPolicy_num_retries(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_per_try_timeout(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 32)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryPriority* envoy_api_v2_route_RetryPolicy_retry_priority(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy_RetryPriority*, UPB_SIZE(24, 40)); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* const* envoy_api_v2_route_RetryPolicy_retry_host_predicate(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+UPB_INLINE int64_t envoy_api_v2_route_RetryPolicy_host_selection_retry_max_attempts(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t const* envoy_api_v2_route_RetryPolicy_retriable_status_codes(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE const envoy_api_v2_route_RetryPolicy_RetryBackOff* envoy_api_v2_route_RetryPolicy_retry_back_off(const envoy_api_v2_route_RetryPolicy *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_route_RetryPolicy_RetryBackOff*, UPB_SIZE(28, 48)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RetryPolicy_retriable_headers(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RetryPolicy_retriable_request_headers(const envoy_api_v2_route_RetryPolicy *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_on(envoy_api_v2_route_RetryPolicy *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_num_retries(envoy_api_v2_route_RetryPolicy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RetryPolicy_mutable_num_retries(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RetryPolicy_num_retries(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_num_retries(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_per_try_timeout(envoy_api_v2_route_RetryPolicy *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_mutable_per_try_timeout(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_per_try_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_per_try_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_priority(envoy_api_v2_route_RetryPolicy *msg, envoy_api_v2_route_RetryPolicy_RetryPriority* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy_RetryPriority*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryPriority* envoy_api_v2_route_RetryPolicy_mutable_retry_priority(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryPriority* sub = (struct envoy_api_v2_route_RetryPolicy_RetryPriority*)envoy_api_v2_route_RetryPolicy_retry_priority(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy_RetryPriority*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_retry_priority(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate** envoy_api_v2_route_RetryPolicy_mutable_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate** envoy_api_v2_route_RetryPolicy_resize_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate* envoy_api_v2_route_RetryPolicy_add_retry_host_predicate(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate* sub = (struct envoy_api_v2_route_RetryPolicy_RetryHostPredicate*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_host_selection_retry_max_attempts(envoy_api_v2_route_RetryPolicy *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE uint32_t* envoy_api_v2_route_RetryPolicy_mutable_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE uint32_t* envoy_api_v2_route_RetryPolicy_resize_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_add_retriable_status_codes(envoy_api_v2_route_RetryPolicy *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_set_retry_back_off(envoy_api_v2_route_RetryPolicy *msg, envoy_api_v2_route_RetryPolicy_RetryBackOff* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_route_RetryPolicy_RetryBackOff*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_RetryPolicy_RetryBackOff* envoy_api_v2_route_RetryPolicy_mutable_retry_back_off(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RetryPolicy_RetryBackOff* sub = (struct envoy_api_v2_route_RetryPolicy_RetryBackOff*)envoy_api_v2_route_RetryPolicy_retry_back_off(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RetryPolicy_RetryBackOff*)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_set_retry_back_off(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_mutable_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_resize_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RetryPolicy_add_retriable_headers(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_mutable_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RetryPolicy_resize_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RetryPolicy_add_retriable_request_headers(envoy_api_v2_route_RetryPolicy *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryPriority */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority *envoy_api_v2_route_RetryPolicy_RetryPriority_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryPriority *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority *envoy_api_v2_route_RetryPolicy_RetryPriority_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryPriority *ret = envoy_api_v2_route_RetryPolicy_RetryPriority_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryPriority_serialize(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryPriority_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_config = 2,
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_typed_config = 3,
+  envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_NOT_SET = 0
+} envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_case(const envoy_api_v2_route_RetryPolicy_RetryPriority* msg) { return (envoy_api_v2_route_RetryPolicy_RetryPriority_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_RetryPriority_name(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryPriority_has_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryPriority_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryPriority_has_typed_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryPriority_typed_config(const envoy_api_v2_route_RetryPolicy_RetryPriority *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_name(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryPriority_mutable_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_RetryPolicy_RetryPriority_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryPriority_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryPriority_set_typed_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryPriority_mutable_typed_config(envoy_api_v2_route_RetryPolicy_RetryPriority *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_RetryPolicy_RetryPriority_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryPriority_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryHostPredicate */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate *ret = envoy_api_v2_route_RetryPolicy_RetryHostPredicate_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryHostPredicate_serialize(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryHostPredicate_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_config = 2,
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_typed_config = 3,
+  envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_NOT_SET = 0
+} envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases;
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_case(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate* msg) { return (envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RetryPolicy_RetryHostPredicate_name(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryHostPredicate_has_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RetryPolicy_RetryHostPredicate_has_typed_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_typed_config(const envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_name(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_mutable_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_api_v2_route_RetryPolicy_RetryHostPredicate_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_typed_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_api_v2_route_RetryPolicy_RetryHostPredicate_mutable_typed_config(envoy_api_v2_route_RetryPolicy_RetryHostPredicate *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_api_v2_route_RetryPolicy_RetryHostPredicate_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryHostPredicate_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RetryPolicy.RetryBackOff */
+
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryBackOff *envoy_api_v2_route_RetryPolicy_RetryBackOff_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RetryPolicy_RetryBackOff *)upb_msg_new(&envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RetryPolicy_RetryBackOff *envoy_api_v2_route_RetryPolicy_RetryBackOff_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RetryPolicy_RetryBackOff *ret = envoy_api_v2_route_RetryPolicy_RetryBackOff_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RetryPolicy_RetryBackOff_serialize(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RetryPolicy_RetryBackOff_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_base_interval(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_max_interval(const envoy_api_v2_route_RetryPolicy_RetryBackOff *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryBackOff_set_base_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_mutable_base_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_RetryBackOff_base_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryBackOff_set_base_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RetryPolicy_RetryBackOff_set_max_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_api_v2_route_RetryPolicy_RetryBackOff_mutable_max_interval(envoy_api_v2_route_RetryPolicy_RetryBackOff *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_api_v2_route_RetryPolicy_RetryBackOff_max_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RetryPolicy_RetryBackOff_set_max_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.HedgePolicy */
+
+UPB_INLINE envoy_api_v2_route_HedgePolicy *envoy_api_v2_route_HedgePolicy_new(upb_arena *arena) {
+  return (envoy_api_v2_route_HedgePolicy *)upb_msg_new(&envoy_api_v2_route_HedgePolicy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_HedgePolicy *envoy_api_v2_route_HedgePolicy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_HedgePolicy *ret = envoy_api_v2_route_HedgePolicy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_HedgePolicy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_HedgePolicy_serialize(const envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_HedgePolicy_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_HedgePolicy_initial_requests(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_HedgePolicy_additional_request_chance(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_api_v2_route_HedgePolicy_hedge_on_per_try_timeout(const envoy_api_v2_route_HedgePolicy *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_initial_requests(envoy_api_v2_route_HedgePolicy *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_HedgePolicy_mutable_initial_requests(envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_HedgePolicy_initial_requests(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HedgePolicy_set_initial_requests(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_additional_request_chance(envoy_api_v2_route_HedgePolicy *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_HedgePolicy_mutable_additional_request_chance(envoy_api_v2_route_HedgePolicy *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_HedgePolicy_additional_request_chance(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HedgePolicy_set_additional_request_chance(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HedgePolicy_set_hedge_on_per_try_timeout(envoy_api_v2_route_HedgePolicy *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RedirectAction */
+
+UPB_INLINE envoy_api_v2_route_RedirectAction *envoy_api_v2_route_RedirectAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RedirectAction *)upb_msg_new(&envoy_api_v2_route_RedirectAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RedirectAction *envoy_api_v2_route_RedirectAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RedirectAction *ret = envoy_api_v2_route_RedirectAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RedirectAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RedirectAction_serialize(const envoy_api_v2_route_RedirectAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RedirectAction_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_https_redirect = 4,
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_scheme_redirect = 7,
+  envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_case(const envoy_api_v2_route_RedirectAction* msg) { return (envoy_api_v2_route_RedirectAction_scheme_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(44, 72)); }
+
+typedef enum {
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_path_redirect = 2,
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_prefix_rewrite = 5,
+  envoy_api_v2_route_RedirectAction_path_rewrite_specifier_NOT_SET = 0
+} envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases envoy_api_v2_route_RedirectAction_path_rewrite_specifier_case(const envoy_api_v2_route_RedirectAction* msg) { return (envoy_api_v2_route_RedirectAction_path_rewrite_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(32, 48)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_host_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_path_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 48), 2); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_path_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), UPB_SIZE(32, 48), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE int32_t envoy_api_v2_route_RedirectAction_response_code(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_https_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(44, 72), 4); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_https_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(36, 56), UPB_SIZE(44, 72), 4, false); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_prefix_rewrite(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(32, 48), 5); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_prefix_rewrite(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), UPB_SIZE(32, 48), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_strip_query(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(12, 12)); }
+UPB_INLINE bool envoy_api_v2_route_RedirectAction_has_scheme_redirect(const envoy_api_v2_route_RedirectAction *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(44, 72), 7); }
+UPB_INLINE upb_strview envoy_api_v2_route_RedirectAction_scheme_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(36, 56), UPB_SIZE(44, 72), 7, upb_strview_make("", strlen(""))); }
+UPB_INLINE uint32_t envoy_api_v2_route_RedirectAction_port_redirect(const envoy_api_v2_route_RedirectAction *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_host_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_path_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), value, UPB_SIZE(32, 48), 2);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_response_code(envoy_api_v2_route_RedirectAction *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_https_redirect(envoy_api_v2_route_RedirectAction *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(36, 56), value, UPB_SIZE(44, 72), 4);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_prefix_rewrite(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(24, 32), value, UPB_SIZE(32, 48), 5);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_strip_query(envoy_api_v2_route_RedirectAction *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_scheme_redirect(envoy_api_v2_route_RedirectAction *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(36, 56), value, UPB_SIZE(44, 72), 7);
+}
+UPB_INLINE void envoy_api_v2_route_RedirectAction_set_port_redirect(envoy_api_v2_route_RedirectAction *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.api.v2.route.DirectResponseAction */
+
+UPB_INLINE envoy_api_v2_route_DirectResponseAction *envoy_api_v2_route_DirectResponseAction_new(upb_arena *arena) {
+  return (envoy_api_v2_route_DirectResponseAction *)upb_msg_new(&envoy_api_v2_route_DirectResponseAction_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_DirectResponseAction *envoy_api_v2_route_DirectResponseAction_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_DirectResponseAction *ret = envoy_api_v2_route_DirectResponseAction_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_DirectResponseAction_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_DirectResponseAction_serialize(const envoy_api_v2_route_DirectResponseAction *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_DirectResponseAction_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_api_v2_route_DirectResponseAction_status(const envoy_api_v2_route_DirectResponseAction *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_DataSource* envoy_api_v2_route_DirectResponseAction_body(const envoy_api_v2_route_DirectResponseAction *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void envoy_api_v2_route_DirectResponseAction_set_status(envoy_api_v2_route_DirectResponseAction *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_DirectResponseAction_set_body(envoy_api_v2_route_DirectResponseAction *msg, struct envoy_api_v2_core_DataSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_DataSource*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_DataSource* envoy_api_v2_route_DirectResponseAction_mutable_body(envoy_api_v2_route_DirectResponseAction *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_DataSource* sub = (struct envoy_api_v2_core_DataSource*)envoy_api_v2_route_DirectResponseAction_body(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_DataSource*)upb_msg_new(&envoy_api_v2_core_DataSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_DirectResponseAction_set_body(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Decorator */
+
+UPB_INLINE envoy_api_v2_route_Decorator *envoy_api_v2_route_Decorator_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Decorator *)upb_msg_new(&envoy_api_v2_route_Decorator_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Decorator *envoy_api_v2_route_Decorator_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Decorator *ret = envoy_api_v2_route_Decorator_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Decorator_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Decorator_serialize(const envoy_api_v2_route_Decorator *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Decorator_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_Decorator_operation(const envoy_api_v2_route_Decorator *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_Decorator_propagate(const envoy_api_v2_route_Decorator *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_Decorator_set_operation(envoy_api_v2_route_Decorator *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_Decorator_set_propagate(envoy_api_v2_route_Decorator *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_Decorator_mutable_propagate(envoy_api_v2_route_Decorator *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_Decorator_propagate(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Decorator_set_propagate(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.Tracing */
+
+UPB_INLINE envoy_api_v2_route_Tracing *envoy_api_v2_route_Tracing_new(upb_arena *arena) {
+  return (envoy_api_v2_route_Tracing *)upb_msg_new(&envoy_api_v2_route_Tracing_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_Tracing *envoy_api_v2_route_Tracing_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_Tracing *ret = envoy_api_v2_route_Tracing_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_Tracing_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_Tracing_serialize(const envoy_api_v2_route_Tracing *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_Tracing_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_client_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_random_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_overall_sampling(const envoy_api_v2_route_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_type_tracing_v2_CustomTag* const* envoy_api_v2_route_Tracing_custom_tags(const envoy_api_v2_route_Tracing *msg, size_t *len) { return (const struct envoy_type_tracing_v2_CustomTag* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_Tracing_set_client_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_client_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_client_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_client_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Tracing_set_random_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_random_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_random_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_random_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_Tracing_set_overall_sampling(envoy_api_v2_route_Tracing *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_api_v2_route_Tracing_mutable_overall_sampling(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_api_v2_route_Tracing_overall_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_Tracing_set_overall_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_api_v2_route_Tracing_mutable_custom_tags(envoy_api_v2_route_Tracing *msg, size_t *len) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_api_v2_route_Tracing_resize_custom_tags(envoy_api_v2_route_Tracing *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag* envoy_api_v2_route_Tracing_add_custom_tags(envoy_api_v2_route_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag* sub = (struct envoy_type_tracing_v2_CustomTag*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.VirtualCluster */
+
+UPB_INLINE envoy_api_v2_route_VirtualCluster *envoy_api_v2_route_VirtualCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_VirtualCluster *)upb_msg_new(&envoy_api_v2_route_VirtualCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_VirtualCluster *envoy_api_v2_route_VirtualCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_VirtualCluster *ret = envoy_api_v2_route_VirtualCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_VirtualCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_VirtualCluster_serialize(const envoy_api_v2_route_VirtualCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_VirtualCluster_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualCluster_pattern(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview envoy_api_v2_route_VirtualCluster_name(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE int32_t envoy_api_v2_route_VirtualCluster_method(const envoy_api_v2_route_VirtualCluster *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_VirtualCluster_headers(const envoy_api_v2_route_VirtualCluster *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(24, 40), len); }
+
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_pattern(envoy_api_v2_route_VirtualCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_name(envoy_api_v2_route_VirtualCluster *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_VirtualCluster_set_method(envoy_api_v2_route_VirtualCluster *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_VirtualCluster_mutable_headers(envoy_api_v2_route_VirtualCluster *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 40), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_VirtualCluster_resize_headers(envoy_api_v2_route_VirtualCluster *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_VirtualCluster_add_headers(envoy_api_v2_route_VirtualCluster *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit */
+
+UPB_INLINE envoy_api_v2_route_RateLimit *envoy_api_v2_route_RateLimit_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit *)upb_msg_new(&envoy_api_v2_route_RateLimit_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit *envoy_api_v2_route_RateLimit_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit *ret = envoy_api_v2_route_RateLimit_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_serialize(const envoy_api_v2_route_RateLimit *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_api_v2_route_RateLimit_stage(const envoy_api_v2_route_RateLimit *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_disable_key(const envoy_api_v2_route_RateLimit *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action* const* envoy_api_v2_route_RateLimit_actions(const envoy_api_v2_route_RateLimit *msg, size_t *len) { return (const envoy_api_v2_route_RateLimit_Action* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_set_stage(envoy_api_v2_route_RateLimit *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_api_v2_route_RateLimit_mutable_stage(envoy_api_v2_route_RateLimit *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_api_v2_route_RateLimit_stage(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_set_stage(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_set_disable_key(envoy_api_v2_route_RateLimit *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action** envoy_api_v2_route_RateLimit_mutable_actions(envoy_api_v2_route_RateLimit *msg, size_t *len) {
+  return (envoy_api_v2_route_RateLimit_Action**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action** envoy_api_v2_route_RateLimit_resize_actions(envoy_api_v2_route_RateLimit *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action* envoy_api_v2_route_RateLimit_add_actions(envoy_api_v2_route_RateLimit *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action* sub = (struct envoy_api_v2_route_RateLimit_Action*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit.Action */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action *envoy_api_v2_route_RateLimit_Action_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action *envoy_api_v2_route_RateLimit_Action_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action *ret = envoy_api_v2_route_RateLimit_Action_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_serialize(const envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_RateLimit_Action_action_specifier_source_cluster = 1,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_destination_cluster = 2,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_request_headers = 3,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_remote_address = 4,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_generic_key = 5,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_header_value_match = 6,
+  envoy_api_v2_route_RateLimit_Action_action_specifier_NOT_SET = 0
+} envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases envoy_api_v2_route_RateLimit_Action_action_specifier_case(const envoy_api_v2_route_RateLimit_Action* msg) { return (envoy_api_v2_route_RateLimit_Action_action_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_source_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_SourceCluster* envoy_api_v2_route_RateLimit_Action_source_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_SourceCluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_destination_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_DestinationCluster* envoy_api_v2_route_RateLimit_Action_destination_cluster(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_DestinationCluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_request_headers(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_RequestHeaders* envoy_api_v2_route_RateLimit_Action_request_headers(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_RequestHeaders*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_remote_address(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_RemoteAddress* envoy_api_v2_route_RateLimit_Action_remote_address(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_RemoteAddress*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_generic_key(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_GenericKey* envoy_api_v2_route_RateLimit_Action_generic_key(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_GenericKey*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_route_RateLimit_Action_has_header_value_match(const envoy_api_v2_route_RateLimit_Action *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 6); }
+UPB_INLINE const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* envoy_api_v2_route_RateLimit_Action_header_value_match(const envoy_api_v2_route_RateLimit_Action *msg) { return UPB_READ_ONEOF(msg, const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 6, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_source_cluster(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_SourceCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_SourceCluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_SourceCluster* envoy_api_v2_route_RateLimit_Action_mutable_source_cluster(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_SourceCluster* sub = (struct envoy_api_v2_route_RateLimit_Action_SourceCluster*)envoy_api_v2_route_RateLimit_Action_source_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_SourceCluster*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_source_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_destination_cluster(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_DestinationCluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_DestinationCluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_DestinationCluster* envoy_api_v2_route_RateLimit_Action_mutable_destination_cluster(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_DestinationCluster* sub = (struct envoy_api_v2_route_RateLimit_Action_DestinationCluster*)envoy_api_v2_route_RateLimit_Action_destination_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_DestinationCluster*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_destination_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_request_headers(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_RequestHeaders* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_RequestHeaders*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_RequestHeaders* envoy_api_v2_route_RateLimit_Action_mutable_request_headers(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_RequestHeaders* sub = (struct envoy_api_v2_route_RateLimit_Action_RequestHeaders*)envoy_api_v2_route_RateLimit_Action_request_headers(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_RequestHeaders*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_request_headers(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_remote_address(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_RemoteAddress* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_RemoteAddress*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_RemoteAddress* envoy_api_v2_route_RateLimit_Action_mutable_remote_address(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_RemoteAddress* sub = (struct envoy_api_v2_route_RateLimit_Action_RemoteAddress*)envoy_api_v2_route_RateLimit_Action_remote_address(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_RemoteAddress*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_remote_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_generic_key(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_GenericKey* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_GenericKey*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_GenericKey* envoy_api_v2_route_RateLimit_Action_mutable_generic_key(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_GenericKey* sub = (struct envoy_api_v2_route_RateLimit_Action_GenericKey*)envoy_api_v2_route_RateLimit_Action_generic_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_GenericKey*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_generic_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_set_header_value_match(envoy_api_v2_route_RateLimit_Action *msg, envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* value) {
+  UPB_WRITE_ONEOF(msg, envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 6);
+}
+UPB_INLINE struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* envoy_api_v2_route_RateLimit_Action_mutable_header_value_match(envoy_api_v2_route_RateLimit_Action *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch* sub = (struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*)envoy_api_v2_route_RateLimit_Action_header_value_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_RateLimit_Action_HeaderValueMatch*)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_set_header_value_match(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.SourceCluster */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_SourceCluster *envoy_api_v2_route_RateLimit_Action_SourceCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_SourceCluster *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_SourceCluster *envoy_api_v2_route_RateLimit_Action_SourceCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_SourceCluster *ret = envoy_api_v2_route_RateLimit_Action_SourceCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_SourceCluster_serialize(const envoy_api_v2_route_RateLimit_Action_SourceCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_SourceCluster_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.DestinationCluster */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_DestinationCluster *envoy_api_v2_route_RateLimit_Action_DestinationCluster_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_DestinationCluster *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_DestinationCluster *envoy_api_v2_route_RateLimit_Action_DestinationCluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_DestinationCluster *ret = envoy_api_v2_route_RateLimit_Action_DestinationCluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_DestinationCluster_serialize(const envoy_api_v2_route_RateLimit_Action_DestinationCluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_DestinationCluster_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.RequestHeaders */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RequestHeaders *envoy_api_v2_route_RateLimit_Action_RequestHeaders_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_RequestHeaders *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RequestHeaders *envoy_api_v2_route_RateLimit_Action_RequestHeaders_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_RequestHeaders *ret = envoy_api_v2_route_RateLimit_Action_RequestHeaders_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_RequestHeaders_serialize(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_RequestHeaders_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_RequestHeaders_header_name(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_RequestHeaders_descriptor_key(const envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_RequestHeaders_set_header_name(envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_RequestHeaders_set_descriptor_key(envoy_api_v2_route_RateLimit_Action_RequestHeaders *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.RemoteAddress */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RemoteAddress *envoy_api_v2_route_RateLimit_Action_RemoteAddress_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_RemoteAddress *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_RemoteAddress *envoy_api_v2_route_RateLimit_Action_RemoteAddress_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_RemoteAddress *ret = envoy_api_v2_route_RateLimit_Action_RemoteAddress_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_RemoteAddress_serialize(const envoy_api_v2_route_RateLimit_Action_RemoteAddress *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_RemoteAddress_msginit, arena, len);
+}
+
+
+
+/* envoy.api.v2.route.RateLimit.Action.GenericKey */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_GenericKey *envoy_api_v2_route_RateLimit_Action_GenericKey_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_GenericKey *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_GenericKey *envoy_api_v2_route_RateLimit_Action_GenericKey_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_GenericKey *ret = envoy_api_v2_route_RateLimit_Action_GenericKey_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_GenericKey_serialize(const envoy_api_v2_route_RateLimit_Action_GenericKey *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_GenericKey_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_GenericKey_descriptor_value(const envoy_api_v2_route_RateLimit_Action_GenericKey *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_GenericKey_set_descriptor_value(envoy_api_v2_route_RateLimit_Action_GenericKey *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.api.v2.route.RateLimit.Action.HeaderValueMatch */
+
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_new(upb_arena *arena) {
+  return (envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *)upb_msg_new(&envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *ret = envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_serialize(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_descriptor_value(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_expect_match(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_route_HeaderMatcher* const* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_headers(const envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t *len) { return (const envoy_api_v2_route_HeaderMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_descriptor_value(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_expect_match(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_mutable_expect_match(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_expect_match(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_set_expect_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_mutable_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t *len) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher** envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_resize_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_api_v2_route_RateLimit_Action_HeaderValueMatch_add_headers(envoy_api_v2_route_RateLimit_Action_HeaderValueMatch *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.route.HeaderMatcher */
+
+UPB_INLINE envoy_api_v2_route_HeaderMatcher *envoy_api_v2_route_HeaderMatcher_new(upb_arena *arena) {
+  return (envoy_api_v2_route_HeaderMatcher *)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_HeaderMatcher *envoy_api_v2_route_HeaderMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_HeaderMatcher *ret = envoy_api_v2_route_HeaderMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_HeaderMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_HeaderMatcher_serialize(const envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_HeaderMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_exact_match = 4,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_regex_match = 5,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_safe_regex_match = 11,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_range_match = 6,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_present_match = 7,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_prefix_match = 9,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_suffix_match = 10,
+  envoy_api_v2_route_HeaderMatcher_header_match_specifier_NOT_SET = 0
+} envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases envoy_api_v2_route_HeaderMatcher_header_match_specifier_case(const envoy_api_v2_route_HeaderMatcher* msg) { return (envoy_api_v2_route_HeaderMatcher_header_match_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_name(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_exact_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_exact_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_range_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 6); }
+UPB_INLINE const struct envoy_type_Int64Range* envoy_api_v2_route_HeaderMatcher_range_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_Int64Range*, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 6, NULL); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_present_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 7); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_present_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 7, false); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_invert_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_prefix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 9); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_prefix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 9, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_suffix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 10); }
+UPB_INLINE upb_strview envoy_api_v2_route_HeaderMatcher_suffix_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 10, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_api_v2_route_HeaderMatcher_has_safe_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 11); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_HeaderMatcher_safe_regex_match(const envoy_api_v2_route_HeaderMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(12, 24), UPB_SIZE(20, 40), 11, NULL); }
+
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_name(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_exact_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_regex_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_range_match(envoy_api_v2_route_HeaderMatcher *msg, struct envoy_type_Int64Range* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_Int64Range*, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 6);
+}
+UPB_INLINE struct envoy_type_Int64Range* envoy_api_v2_route_HeaderMatcher_mutable_range_match(envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena) {
+  struct envoy_type_Int64Range* sub = (struct envoy_type_Int64Range*)envoy_api_v2_route_HeaderMatcher_range_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Int64Range*)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HeaderMatcher_set_range_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_present_match(envoy_api_v2_route_HeaderMatcher *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 7);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_invert_match(envoy_api_v2_route_HeaderMatcher *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_prefix_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 9);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_suffix_match(envoy_api_v2_route_HeaderMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 10);
+}
+UPB_INLINE void envoy_api_v2_route_HeaderMatcher_set_safe_regex_match(envoy_api_v2_route_HeaderMatcher *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(12, 24), value, UPB_SIZE(20, 40), 11);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_api_v2_route_HeaderMatcher_mutable_safe_regex_match(envoy_api_v2_route_HeaderMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_api_v2_route_HeaderMatcher_safe_regex_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_HeaderMatcher_set_safe_regex_match(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.route.QueryParameterMatcher */
+
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher *envoy_api_v2_route_QueryParameterMatcher_new(upb_arena *arena) {
+  return (envoy_api_v2_route_QueryParameterMatcher *)upb_msg_new(&envoy_api_v2_route_QueryParameterMatcher_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher *envoy_api_v2_route_QueryParameterMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_route_QueryParameterMatcher *ret = envoy_api_v2_route_QueryParameterMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_route_QueryParameterMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_route_QueryParameterMatcher_serialize(const envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_route_QueryParameterMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_string_match = 5,
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_present_match = 6,
+  envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_NOT_SET = 0
+} envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases;
+UPB_INLINE envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_case(const envoy_api_v2_route_QueryParameterMatcher* msg) { return (envoy_api_v2_route_QueryParameterMatcher_query_parameter_match_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 48)); }
+
+UPB_INLINE upb_strview envoy_api_v2_route_QueryParameterMatcher_name(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_route_QueryParameterMatcher_value(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_api_v2_route_QueryParameterMatcher_regex(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_has_string_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 48), 5); }
+UPB_INLINE const struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_QueryParameterMatcher_string_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_StringMatcher*, UPB_SIZE(20, 40), UPB_SIZE(24, 48), 5, NULL); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_has_present_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(24, 48), 6); }
+UPB_INLINE bool envoy_api_v2_route_QueryParameterMatcher_present_match(const envoy_api_v2_route_QueryParameterMatcher *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(20, 40), UPB_SIZE(24, 48), 6, false); }
+
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_name(envoy_api_v2_route_QueryParameterMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_value(envoy_api_v2_route_QueryParameterMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_regex(envoy_api_v2_route_QueryParameterMatcher *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_api_v2_route_QueryParameterMatcher_mutable_regex(envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_api_v2_route_QueryParameterMatcher_regex(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_QueryParameterMatcher_set_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_string_match(envoy_api_v2_route_QueryParameterMatcher *msg, struct envoy_type_matcher_StringMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_StringMatcher*, UPB_SIZE(20, 40), value, UPB_SIZE(24, 48), 5);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_api_v2_route_QueryParameterMatcher_mutable_string_match(envoy_api_v2_route_QueryParameterMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)envoy_api_v2_route_QueryParameterMatcher_string_match(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_route_QueryParameterMatcher_set_string_match(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_api_v2_route_QueryParameterMatcher_set_present_match(envoy_api_v2_route_QueryParameterMatcher *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(20, 40), value, UPB_SIZE(24, 48), 6);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_ROUTE_ROUTE_COMPONENTS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.c
new file mode 100644
index 0000000..6155593
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.c	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/scoped_route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h"
+#else
+  #include  "envoy/api/v2/scoped_route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_api_v2_ScopedRouteConfiguration_submsgs[1] = {
+  &envoy_api_v2_ScopedRouteConfiguration_Key_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ScopedRouteConfiguration__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(16, 32), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_msginit = {
+  &envoy_api_v2_ScopedRouteConfiguration_submsgs[0],
+  &envoy_api_v2_ScopedRouteConfiguration__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+static const upb_msglayout *const envoy_api_v2_ScopedRouteConfiguration_Key_submsgs[1] = {
+  &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit,
+};
+
+static const upb_msglayout_field envoy_api_v2_ScopedRouteConfiguration_Key__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_msginit = {
+  &envoy_api_v2_ScopedRouteConfiguration_Key_submsgs[0],
+  &envoy_api_v2_ScopedRouteConfiguration_Key__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field envoy_api_v2_ScopedRouteConfiguration_Key_Fragment__fields[1] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+};
+
+const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit = {
+  NULL,
+  &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment__fields[0],
+  UPB_SIZE(16, 32), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h
new file mode 100644
index 0000000..fff6d7b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h	
@@ -0,0 +1,158 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/scoped_route.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_
+#define ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_ScopedRouteConfiguration;
+struct envoy_api_v2_ScopedRouteConfiguration_Key;
+struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment;
+typedef struct envoy_api_v2_ScopedRouteConfiguration envoy_api_v2_ScopedRouteConfiguration;
+typedef struct envoy_api_v2_ScopedRouteConfiguration_Key envoy_api_v2_ScopedRouteConfiguration_Key;
+typedef struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment envoy_api_v2_ScopedRouteConfiguration_Key_Fragment;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit;
+
+
+/* envoy.api.v2.ScopedRouteConfiguration */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration *envoy_api_v2_ScopedRouteConfiguration_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration *envoy_api_v2_ScopedRouteConfiguration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration *ret = envoy_api_v2_ScopedRouteConfiguration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_serialize(const envoy_api_v2_ScopedRouteConfiguration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_name(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_route_configuration_name(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE const envoy_api_v2_ScopedRouteConfiguration_Key* envoy_api_v2_ScopedRouteConfiguration_key(const envoy_api_v2_ScopedRouteConfiguration *msg) { return UPB_FIELD_AT(msg, const envoy_api_v2_ScopedRouteConfiguration_Key*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_name(envoy_api_v2_ScopedRouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_route_configuration_name(envoy_api_v2_ScopedRouteConfiguration *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_set_key(envoy_api_v2_ScopedRouteConfiguration *msg, envoy_api_v2_ScopedRouteConfiguration_Key* value) {
+  UPB_FIELD_AT(msg, envoy_api_v2_ScopedRouteConfiguration_Key*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration_Key* envoy_api_v2_ScopedRouteConfiguration_mutable_key(envoy_api_v2_ScopedRouteConfiguration *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration_Key* sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key*)envoy_api_v2_ScopedRouteConfiguration_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena);
+    if (!sub) return NULL;
+    envoy_api_v2_ScopedRouteConfiguration_set_key(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.api.v2.ScopedRouteConfiguration.Key */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key *envoy_api_v2_ScopedRouteConfiguration_Key_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key *envoy_api_v2_ScopedRouteConfiguration_Key_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration_Key *ret = envoy_api_v2_ScopedRouteConfiguration_Key_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_Key_serialize(const envoy_api_v2_ScopedRouteConfiguration_Key *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_Key_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* const* envoy_api_v2_ScopedRouteConfiguration_Key_fragments(const envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t *len) { return (const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment** envoy_api_v2_ScopedRouteConfiguration_Key_mutable_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t *len) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment** envoy_api_v2_ScopedRouteConfiguration_Key_resize_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, size_t len, upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* envoy_api_v2_ScopedRouteConfiguration_Key_add_fragments(envoy_api_v2_ScopedRouteConfiguration_Key *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* sub = (struct envoy_api_v2_ScopedRouteConfiguration_Key_Fragment*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.api.v2.ScopedRouteConfiguration.Key.Fragment */
+
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_new(upb_arena *arena) {
+  return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *ret = envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_serialize(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_string_key = 1,
+  envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_NOT_SET = 0
+} envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases;
+UPB_INLINE envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_case(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment* msg) { return (envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_has_string_key(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_string_key(const envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_api_v2_ScopedRouteConfiguration_Key_Fragment_set_string_key(envoy_api_v2_ScopedRouteConfiguration_Key_Fragment *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_SCOPED_ROUTE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.c
new file mode 100644
index 0000000..a29239d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.c	
@@ -0,0 +1,63 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/srds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/srds.upb.h"
+#else
+  #include  "envoy/api/v2/srds.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/resource.upb.h"
+#else
+  #include  "envoy/annotations/resource.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h"
+#else
+  #include  "envoy/api/v2/scoped_route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_api_v2_SrdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h
new file mode 100644
index 0000000..5b8c94e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/api/v2/srds.upb.h	
@@ -0,0 +1,81 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/api/v2/srds.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_API_V2_SRDS_PROTO_UPB_H_
+#define ENVOY_API_V2_SRDS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+/* Public Imports. */
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h"
+#else
+  #include  "envoy/api/v2/scoped_route.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_api_v2_SrdsDummy;
+typedef struct envoy_api_v2_SrdsDummy envoy_api_v2_SrdsDummy;
+extern const upb_msglayout envoy_api_v2_SrdsDummy_msginit;
+
+
+/* envoy.api.v2.SrdsDummy */
+
+UPB_INLINE envoy_api_v2_SrdsDummy *envoy_api_v2_SrdsDummy_new(upb_arena *arena) {
+  return (envoy_api_v2_SrdsDummy *)upb_msg_new(&envoy_api_v2_SrdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_api_v2_SrdsDummy *envoy_api_v2_SrdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_api_v2_SrdsDummy *ret = envoy_api_v2_SrdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_api_v2_SrdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_api_v2_SrdsDummy_serialize(const envoy_api_v2_SrdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_api_v2_SrdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_API_V2_SRDS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.c
new file mode 100644
index 0000000..56440df
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.c	
@@ -0,0 +1,271 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/accesslog/v2/accesslog.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h"
+#else
+  #include  "envoy/config/filter/accesslog/v2/accesslog.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route/route_components.upb.h"
+#else
+  #include  "envoy/api/v2/route/route_components.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_AccessLog_submsgs[3] = {
+  &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit,
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_AccessLog__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {3, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 2, 11, 1},
+  {4, UPB_SIZE(12, 24), UPB_SIZE(-17, -33), 1, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_AccessLog_msginit = {
+  &envoy_config_filter_accesslog_v2_AccessLog_submsgs[0],
+  &envoy_config_filter_accesslog_v2_AccessLog__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_AccessLogFilter_submsgs[11] = {
+  &envoy_config_filter_accesslog_v2_AndFilter_msginit,
+  &envoy_config_filter_accesslog_v2_DurationFilter_msginit,
+  &envoy_config_filter_accesslog_v2_ExtensionFilter_msginit,
+  &envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit,
+  &envoy_config_filter_accesslog_v2_HeaderFilter_msginit,
+  &envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit,
+  &envoy_config_filter_accesslog_v2_OrFilter_msginit,
+  &envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit,
+  &envoy_config_filter_accesslog_v2_RuntimeFilter_msginit,
+  &envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit,
+  &envoy_config_filter_accesslog_v2_TraceableFilter_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_AccessLogFilter__fields[11] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 9, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 5, 11, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 10, 11, 1},
+  {5, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 8, 11, 1},
+  {6, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+  {7, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 6, 11, 1},
+  {8, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 4, 11, 1},
+  {9, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 7, 11, 1},
+  {10, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 3, 11, 1},
+  {11, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_AccessLogFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_AccessLogFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_AccessLogFilter__fields[0],
+  UPB_SIZE(8, 16), 11, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_ComparisonFilter_submsgs[1] = {
+  &envoy_api_v2_core_RuntimeUInt32_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_ComparisonFilter__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_ComparisonFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_ComparisonFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_ComparisonFilter__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_StatusCodeFilter_submsgs[1] = {
+  &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_StatusCodeFilter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_StatusCodeFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_StatusCodeFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_DurationFilter_submsgs[1] = {
+  &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_DurationFilter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_DurationFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_DurationFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_DurationFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_TraceableFilter_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_RuntimeFilter_submsgs[1] = {
+  &envoy_type_FractionalPercent_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_RuntimeFilter__fields[3] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_RuntimeFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_RuntimeFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_RuntimeFilter__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_AndFilter_submsgs[1] = {
+  &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_AndFilter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_AndFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_AndFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_AndFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_OrFilter_submsgs[1] = {
+  &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_OrFilter__fields[1] = {
+  {2, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_OrFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_OrFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_OrFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_HeaderFilter_submsgs[1] = {
+  &envoy_api_v2_route_HeaderMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_HeaderFilter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_HeaderFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_HeaderFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_HeaderFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_ResponseFlagFilter__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 3},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit = {
+  NULL,
+  &envoy_config_filter_accesslog_v2_ResponseFlagFilter__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_GrpcStatusFilter__fields[2] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 14, 3},
+  {2, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit = {
+  NULL,
+  &envoy_config_filter_accesslog_v2_GrpcStatusFilter__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_accesslog_v2_ExtensionFilter_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_accesslog_v2_ExtensionFilter__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_accesslog_v2_ExtensionFilter_msginit = {
+  &envoy_config_filter_accesslog_v2_ExtensionFilter_submsgs[0],
+  &envoy_config_filter_accesslog_v2_ExtensionFilter__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h
new file mode 100644
index 0000000..6ba2d0b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h	
@@ -0,0 +1,749 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/accesslog/v2/accesslog.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_
+#define ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_filter_accesslog_v2_AccessLog;
+struct envoy_config_filter_accesslog_v2_AccessLogFilter;
+struct envoy_config_filter_accesslog_v2_ComparisonFilter;
+struct envoy_config_filter_accesslog_v2_StatusCodeFilter;
+struct envoy_config_filter_accesslog_v2_DurationFilter;
+struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter;
+struct envoy_config_filter_accesslog_v2_TraceableFilter;
+struct envoy_config_filter_accesslog_v2_RuntimeFilter;
+struct envoy_config_filter_accesslog_v2_AndFilter;
+struct envoy_config_filter_accesslog_v2_OrFilter;
+struct envoy_config_filter_accesslog_v2_HeaderFilter;
+struct envoy_config_filter_accesslog_v2_ResponseFlagFilter;
+struct envoy_config_filter_accesslog_v2_GrpcStatusFilter;
+struct envoy_config_filter_accesslog_v2_ExtensionFilter;
+typedef struct envoy_config_filter_accesslog_v2_AccessLog envoy_config_filter_accesslog_v2_AccessLog;
+typedef struct envoy_config_filter_accesslog_v2_AccessLogFilter envoy_config_filter_accesslog_v2_AccessLogFilter;
+typedef struct envoy_config_filter_accesslog_v2_ComparisonFilter envoy_config_filter_accesslog_v2_ComparisonFilter;
+typedef struct envoy_config_filter_accesslog_v2_StatusCodeFilter envoy_config_filter_accesslog_v2_StatusCodeFilter;
+typedef struct envoy_config_filter_accesslog_v2_DurationFilter envoy_config_filter_accesslog_v2_DurationFilter;
+typedef struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter envoy_config_filter_accesslog_v2_NotHealthCheckFilter;
+typedef struct envoy_config_filter_accesslog_v2_TraceableFilter envoy_config_filter_accesslog_v2_TraceableFilter;
+typedef struct envoy_config_filter_accesslog_v2_RuntimeFilter envoy_config_filter_accesslog_v2_RuntimeFilter;
+typedef struct envoy_config_filter_accesslog_v2_AndFilter envoy_config_filter_accesslog_v2_AndFilter;
+typedef struct envoy_config_filter_accesslog_v2_OrFilter envoy_config_filter_accesslog_v2_OrFilter;
+typedef struct envoy_config_filter_accesslog_v2_HeaderFilter envoy_config_filter_accesslog_v2_HeaderFilter;
+typedef struct envoy_config_filter_accesslog_v2_ResponseFlagFilter envoy_config_filter_accesslog_v2_ResponseFlagFilter;
+typedef struct envoy_config_filter_accesslog_v2_GrpcStatusFilter envoy_config_filter_accesslog_v2_GrpcStatusFilter;
+typedef struct envoy_config_filter_accesslog_v2_ExtensionFilter envoy_config_filter_accesslog_v2_ExtensionFilter;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLog_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLogFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ComparisonFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_DurationFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_TraceableFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_RuntimeFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AndFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_OrFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_HeaderFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_ExtensionFilter_msginit;
+struct envoy_api_v2_core_RuntimeUInt32;
+struct envoy_api_v2_route_HeaderMatcher;
+struct envoy_type_FractionalPercent;
+struct google_protobuf_Any;
+struct google_protobuf_Struct;
+extern const upb_msglayout envoy_api_v2_core_RuntimeUInt32_msginit;
+extern const upb_msglayout envoy_api_v2_route_HeaderMatcher_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_ComparisonFilter_EQ = 0,
+  envoy_config_filter_accesslog_v2_ComparisonFilter_GE = 1,
+  envoy_config_filter_accesslog_v2_ComparisonFilter_LE = 2
+} envoy_config_filter_accesslog_v2_ComparisonFilter_Op;
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_OK = 0,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_CANCELED = 1,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNKNOWN = 2,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_INVALID_ARGUMENT = 3,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_DEADLINE_EXCEEDED = 4,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_NOT_FOUND = 5,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_ALREADY_EXISTS = 6,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_PERMISSION_DENIED = 7,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_RESOURCE_EXHAUSTED = 8,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_FAILED_PRECONDITION = 9,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_ABORTED = 10,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_OUT_OF_RANGE = 11,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNIMPLEMENTED = 12,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_INTERNAL = 13,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNAVAILABLE = 14,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_DATA_LOSS = 15,
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter_UNAUTHENTICATED = 16
+} envoy_config_filter_accesslog_v2_GrpcStatusFilter_Status;
+
+
+/* envoy.config.filter.accesslog.v2.AccessLog */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog *envoy_config_filter_accesslog_v2_AccessLog_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLog *)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLog_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog *envoy_config_filter_accesslog_v2_AccessLog_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AccessLog *ret = envoy_config_filter_accesslog_v2_AccessLog_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AccessLog_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AccessLog_serialize(const envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AccessLog_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_config = 3,
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_typed_config = 4,
+  envoy_config_filter_accesslog_v2_AccessLog_config_type_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases envoy_config_filter_accesslog_v2_AccessLog_config_type_case(const envoy_config_filter_accesslog_v2_AccessLog* msg) { return (envoy_config_filter_accesslog_v2_AccessLog_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 32)); }
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_AccessLog_name(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AccessLog_filter(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_AccessLogFilter*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLog_has_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 3); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_AccessLog_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLog_has_typed_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(16, 32), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_accesslog_v2_AccessLog_typed_config(const envoy_config_filter_accesslog_v2_AccessLog *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(12, 24), UPB_SIZE(16, 32), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_name(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_filter(envoy_config_filter_accesslog_v2_AccessLog *msg, envoy_config_filter_accesslog_v2_AccessLogFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_AccessLogFilter*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AccessLog_mutable_filter(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)envoy_config_filter_accesslog_v2_AccessLog_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_config(envoy_config_filter_accesslog_v2_AccessLog *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 3);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_AccessLog_mutable_config(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_accesslog_v2_AccessLog_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLog_set_typed_config(envoy_config_filter_accesslog_v2_AccessLog *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(12, 24), value, UPB_SIZE(16, 32), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_accesslog_v2_AccessLog_mutable_typed_config(envoy_config_filter_accesslog_v2_AccessLog *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_accesslog_v2_AccessLog_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLog_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.AccessLogFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter *envoy_config_filter_accesslog_v2_AccessLogFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter *envoy_config_filter_accesslog_v2_AccessLogFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AccessLogFilter *ret = envoy_config_filter_accesslog_v2_AccessLogFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AccessLogFilter_serialize(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_status_code_filter = 1,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_duration_filter = 2,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_not_health_check_filter = 3,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_traceable_filter = 4,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_runtime_filter = 5,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_and_filter = 6,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_or_filter = 7,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_header_filter = 8,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_response_flag_filter = 9,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_grpc_status_filter = 10,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_extension_filter = 11,
+  envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_case(const envoy_config_filter_accesslog_v2_AccessLogFilter* msg) { return (envoy_config_filter_accesslog_v2_AccessLogFilter_filter_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_status_code_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_StatusCodeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_status_code_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_StatusCodeFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_duration_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_DurationFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_duration_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_DurationFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_not_health_check_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_NotHealthCheckFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_not_health_check_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_NotHealthCheckFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_traceable_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_TraceableFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_traceable_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_TraceableFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_runtime_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 5); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_RuntimeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_runtime_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_RuntimeFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 5, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_and_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 6); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_AndFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_and_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_AndFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 6, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_or_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 7); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_OrFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_or_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_OrFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 7, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_header_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 8); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_HeaderFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_header_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_HeaderFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 8, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_response_flag_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 9); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_ResponseFlagFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_response_flag_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_ResponseFlagFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 9, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_grpc_status_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 10); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_GrpcStatusFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_grpc_status_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_GrpcStatusFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 10, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_AccessLogFilter_has_extension_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 11); }
+UPB_INLINE const envoy_config_filter_accesslog_v2_ExtensionFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_extension_filter(const envoy_config_filter_accesslog_v2_AccessLogFilter *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_accesslog_v2_ExtensionFilter*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 11, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_status_code_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_StatusCodeFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_StatusCodeFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_StatusCodeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_status_code_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_StatusCodeFilter* sub = (struct envoy_config_filter_accesslog_v2_StatusCodeFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_status_code_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_StatusCodeFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_status_code_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_duration_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_DurationFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_DurationFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_DurationFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_duration_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_DurationFilter* sub = (struct envoy_config_filter_accesslog_v2_DurationFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_duration_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_DurationFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_duration_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_not_health_check_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_NotHealthCheckFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_NotHealthCheckFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_not_health_check_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter* sub = (struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_not_health_check_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_NotHealthCheckFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_not_health_check_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_traceable_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_TraceableFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_TraceableFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_TraceableFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_traceable_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_TraceableFilter* sub = (struct envoy_config_filter_accesslog_v2_TraceableFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_traceable_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_TraceableFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_traceable_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_runtime_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_RuntimeFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_RuntimeFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 5);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_RuntimeFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_runtime_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_RuntimeFilter* sub = (struct envoy_config_filter_accesslog_v2_RuntimeFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_runtime_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_RuntimeFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_runtime_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_and_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_AndFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_AndFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 6);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AndFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_and_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AndFilter* sub = (struct envoy_config_filter_accesslog_v2_AndFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_and_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_AndFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AndFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_and_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_or_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_OrFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_OrFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 7);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_OrFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_or_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_OrFilter* sub = (struct envoy_config_filter_accesslog_v2_OrFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_or_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_OrFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_OrFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_or_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_header_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_HeaderFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_HeaderFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 8);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_HeaderFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_header_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_HeaderFilter* sub = (struct envoy_config_filter_accesslog_v2_HeaderFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_header_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_HeaderFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_header_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_response_flag_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_ResponseFlagFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_ResponseFlagFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 9);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ResponseFlagFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_response_flag_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ResponseFlagFilter* sub = (struct envoy_config_filter_accesslog_v2_ResponseFlagFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_response_flag_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ResponseFlagFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_response_flag_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_grpc_status_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_GrpcStatusFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_GrpcStatusFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 10);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_GrpcStatusFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_grpc_status_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_GrpcStatusFilter* sub = (struct envoy_config_filter_accesslog_v2_GrpcStatusFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_grpc_status_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_GrpcStatusFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_grpc_status_filter(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_AccessLogFilter_set_extension_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, envoy_config_filter_accesslog_v2_ExtensionFilter* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_accesslog_v2_ExtensionFilter*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 11);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ExtensionFilter* envoy_config_filter_accesslog_v2_AccessLogFilter_mutable_extension_filter(envoy_config_filter_accesslog_v2_AccessLogFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ExtensionFilter* sub = (struct envoy_config_filter_accesslog_v2_ExtensionFilter*)envoy_config_filter_accesslog_v2_AccessLogFilter_extension_filter(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ExtensionFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_AccessLogFilter_set_extension_filter(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.ComparisonFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ComparisonFilter *envoy_config_filter_accesslog_v2_ComparisonFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ComparisonFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ComparisonFilter *envoy_config_filter_accesslog_v2_ComparisonFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ComparisonFilter *ret = envoy_config_filter_accesslog_v2_ComparisonFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ComparisonFilter_serialize(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_config_filter_accesslog_v2_ComparisonFilter_op(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_core_RuntimeUInt32* envoy_config_filter_accesslog_v2_ComparisonFilter_value(const envoy_config_filter_accesslog_v2_ComparisonFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_RuntimeUInt32*, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_ComparisonFilter_set_op(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ComparisonFilter_set_value(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, struct envoy_api_v2_core_RuntimeUInt32* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_RuntimeUInt32*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_RuntimeUInt32* envoy_config_filter_accesslog_v2_ComparisonFilter_mutable_value(envoy_config_filter_accesslog_v2_ComparisonFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_RuntimeUInt32* sub = (struct envoy_api_v2_core_RuntimeUInt32*)envoy_config_filter_accesslog_v2_ComparisonFilter_value(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_RuntimeUInt32*)upb_msg_new(&envoy_api_v2_core_RuntimeUInt32_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ComparisonFilter_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.StatusCodeFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_StatusCodeFilter *envoy_config_filter_accesslog_v2_StatusCodeFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_StatusCodeFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_StatusCodeFilter *envoy_config_filter_accesslog_v2_StatusCodeFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_StatusCodeFilter *ret = envoy_config_filter_accesslog_v2_StatusCodeFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_StatusCodeFilter_serialize(const envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_StatusCodeFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_StatusCodeFilter_comparison(const envoy_config_filter_accesslog_v2_StatusCodeFilter *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_StatusCodeFilter_set_comparison(envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, envoy_config_filter_accesslog_v2_ComparisonFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_StatusCodeFilter_mutable_comparison(envoy_config_filter_accesslog_v2_StatusCodeFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ComparisonFilter* sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)envoy_config_filter_accesslog_v2_StatusCodeFilter_comparison(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_StatusCodeFilter_set_comparison(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.DurationFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_DurationFilter *envoy_config_filter_accesslog_v2_DurationFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_DurationFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_DurationFilter *envoy_config_filter_accesslog_v2_DurationFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_DurationFilter *ret = envoy_config_filter_accesslog_v2_DurationFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_DurationFilter_serialize(const envoy_config_filter_accesslog_v2_DurationFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_DurationFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_DurationFilter_comparison(const envoy_config_filter_accesslog_v2_DurationFilter *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_DurationFilter_set_comparison(envoy_config_filter_accesslog_v2_DurationFilter *msg, envoy_config_filter_accesslog_v2_ComparisonFilter* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_accesslog_v2_ComparisonFilter*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_ComparisonFilter* envoy_config_filter_accesslog_v2_DurationFilter_mutable_comparison(envoy_config_filter_accesslog_v2_DurationFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_ComparisonFilter* sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)envoy_config_filter_accesslog_v2_DurationFilter_comparison(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_accesslog_v2_ComparisonFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_ComparisonFilter_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_DurationFilter_set_comparison(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.NotHealthCheckFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_NotHealthCheckFilter *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_NotHealthCheckFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_NotHealthCheckFilter *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_NotHealthCheckFilter *ret = envoy_config_filter_accesslog_v2_NotHealthCheckFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_NotHealthCheckFilter_serialize(const envoy_config_filter_accesslog_v2_NotHealthCheckFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_NotHealthCheckFilter_msginit, arena, len);
+}
+
+
+
+/* envoy.config.filter.accesslog.v2.TraceableFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_TraceableFilter *envoy_config_filter_accesslog_v2_TraceableFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_TraceableFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_TraceableFilter *envoy_config_filter_accesslog_v2_TraceableFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_TraceableFilter *ret = envoy_config_filter_accesslog_v2_TraceableFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_TraceableFilter_serialize(const envoy_config_filter_accesslog_v2_TraceableFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_TraceableFilter_msginit, arena, len);
+}
+
+
+
+/* envoy.config.filter.accesslog.v2.RuntimeFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_RuntimeFilter *envoy_config_filter_accesslog_v2_RuntimeFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_RuntimeFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_RuntimeFilter *envoy_config_filter_accesslog_v2_RuntimeFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_RuntimeFilter *ret = envoy_config_filter_accesslog_v2_RuntimeFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_RuntimeFilter_serialize(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_RuntimeFilter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_RuntimeFilter_runtime_key(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct envoy_type_FractionalPercent* envoy_config_filter_accesslog_v2_RuntimeFilter_percent_sampled(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_FractionalPercent*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_RuntimeFilter_use_independent_randomness(const envoy_config_filter_accesslog_v2_RuntimeFilter *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_runtime_key(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_percent_sampled(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, struct envoy_type_FractionalPercent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_FractionalPercent*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_type_FractionalPercent* envoy_config_filter_accesslog_v2_RuntimeFilter_mutable_percent_sampled(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, upb_arena *arena) {
+  struct envoy_type_FractionalPercent* sub = (struct envoy_type_FractionalPercent*)envoy_config_filter_accesslog_v2_RuntimeFilter_percent_sampled(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_FractionalPercent*)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_RuntimeFilter_set_percent_sampled(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_RuntimeFilter_set_use_independent_randomness(envoy_config_filter_accesslog_v2_RuntimeFilter *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.accesslog.v2.AndFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AndFilter *envoy_config_filter_accesslog_v2_AndFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AndFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_AndFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AndFilter *envoy_config_filter_accesslog_v2_AndFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_AndFilter *ret = envoy_config_filter_accesslog_v2_AndFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_AndFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_AndFilter_serialize(const envoy_config_filter_accesslog_v2_AndFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_AndFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* const* envoy_config_filter_accesslog_v2_AndFilter_filters(const envoy_config_filter_accesslog_v2_AndFilter *msg, size_t *len) { return (const envoy_config_filter_accesslog_v2_AccessLogFilter* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_AndFilter_mutable_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, size_t *len) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_AndFilter_resize_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_AndFilter_add_filters(envoy_config_filter_accesslog_v2_AndFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.OrFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_OrFilter *envoy_config_filter_accesslog_v2_OrFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_OrFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_OrFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_OrFilter *envoy_config_filter_accesslog_v2_OrFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_OrFilter *ret = envoy_config_filter_accesslog_v2_OrFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_OrFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_OrFilter_serialize(const envoy_config_filter_accesslog_v2_OrFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_OrFilter_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_accesslog_v2_AccessLogFilter* const* envoy_config_filter_accesslog_v2_OrFilter_filters(const envoy_config_filter_accesslog_v2_OrFilter *msg, size_t *len) { return (const envoy_config_filter_accesslog_v2_AccessLogFilter* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_OrFilter_mutable_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, size_t *len) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_AccessLogFilter** envoy_config_filter_accesslog_v2_OrFilter_resize_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_AccessLogFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLogFilter* envoy_config_filter_accesslog_v2_OrFilter_add_filters(envoy_config_filter_accesslog_v2_OrFilter *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLogFilter* sub = (struct envoy_config_filter_accesslog_v2_AccessLogFilter*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLogFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.HeaderFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_HeaderFilter *envoy_config_filter_accesslog_v2_HeaderFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_HeaderFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_HeaderFilter *envoy_config_filter_accesslog_v2_HeaderFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_HeaderFilter *ret = envoy_config_filter_accesslog_v2_HeaderFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_HeaderFilter_serialize(const envoy_config_filter_accesslog_v2_HeaderFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_HeaderFilter_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_route_HeaderMatcher* envoy_config_filter_accesslog_v2_HeaderFilter_header(const envoy_config_filter_accesslog_v2_HeaderFilter *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_route_HeaderMatcher*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_HeaderFilter_set_header(envoy_config_filter_accesslog_v2_HeaderFilter *msg, struct envoy_api_v2_route_HeaderMatcher* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_route_HeaderMatcher*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_route_HeaderMatcher* envoy_config_filter_accesslog_v2_HeaderFilter_mutable_header(envoy_config_filter_accesslog_v2_HeaderFilter *msg, upb_arena *arena) {
+  struct envoy_api_v2_route_HeaderMatcher* sub = (struct envoy_api_v2_route_HeaderMatcher*)envoy_config_filter_accesslog_v2_HeaderFilter_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_route_HeaderMatcher*)upb_msg_new(&envoy_api_v2_route_HeaderMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_HeaderFilter_set_header(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.accesslog.v2.ResponseFlagFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ResponseFlagFilter *envoy_config_filter_accesslog_v2_ResponseFlagFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ResponseFlagFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ResponseFlagFilter *envoy_config_filter_accesslog_v2_ResponseFlagFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ResponseFlagFilter *ret = envoy_config_filter_accesslog_v2_ResponseFlagFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ResponseFlagFilter_serialize(const envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ResponseFlagFilter_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_config_filter_accesslog_v2_ResponseFlagFilter_flags(const envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE upb_strview* envoy_config_filter_accesslog_v2_ResponseFlagFilter_mutable_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* envoy_config_filter_accesslog_v2_ResponseFlagFilter_resize_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ResponseFlagFilter_add_flags(envoy_config_filter_accesslog_v2_ResponseFlagFilter *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* envoy.config.filter.accesslog.v2.GrpcStatusFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_GrpcStatusFilter *envoy_config_filter_accesslog_v2_GrpcStatusFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_GrpcStatusFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_GrpcStatusFilter *envoy_config_filter_accesslog_v2_GrpcStatusFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_GrpcStatusFilter *ret = envoy_config_filter_accesslog_v2_GrpcStatusFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_GrpcStatusFilter_serialize(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_GrpcStatusFilter_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* envoy_config_filter_accesslog_v2_GrpcStatusFilter_statuses(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_GrpcStatusFilter_exclude(const envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE int32_t* envoy_config_filter_accesslog_v2_GrpcStatusFilter_mutable_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE int32_t* envoy_config_filter_accesslog_v2_GrpcStatusFilter_resize_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(8, 8), UPB_TYPE_ENUM, arena);
+}
+UPB_INLINE bool envoy_config_filter_accesslog_v2_GrpcStatusFilter_add_statuses(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(8, 8), UPB_TYPE_ENUM, &val, arena);
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_GrpcStatusFilter_set_exclude(envoy_config_filter_accesslog_v2_GrpcStatusFilter *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.accesslog.v2.ExtensionFilter */
+
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter *envoy_config_filter_accesslog_v2_ExtensionFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_accesslog_v2_ExtensionFilter *)upb_msg_new(&envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter *envoy_config_filter_accesslog_v2_ExtensionFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_accesslog_v2_ExtensionFilter *ret = envoy_config_filter_accesslog_v2_ExtensionFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_accesslog_v2_ExtensionFilter_serialize(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_accesslog_v2_ExtensionFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_config = 2,
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_typed_config = 3,
+  envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_NOT_SET = 0
+} envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_case(const envoy_config_filter_accesslog_v2_ExtensionFilter* msg) { return (envoy_config_filter_accesslog_v2_ExtensionFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_config_filter_accesslog_v2_ExtensionFilter_name(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ExtensionFilter_has_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_ExtensionFilter_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_accesslog_v2_ExtensionFilter_has_typed_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_accesslog_v2_ExtensionFilter_typed_config(const envoy_config_filter_accesslog_v2_ExtensionFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_name(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_accesslog_v2_ExtensionFilter_mutable_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_accesslog_v2_ExtensionFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ExtensionFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_accesslog_v2_ExtensionFilter_set_typed_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_accesslog_v2_ExtensionFilter_mutable_typed_config(envoy_config_filter_accesslog_v2_ExtensionFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_accesslog_v2_ExtensionFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_accesslog_v2_ExtensionFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_FILTER_ACCESSLOG_V2_ACCESSLOG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.c
new file mode 100644
index 0000000..7412a47
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.c	
@@ -0,0 +1,368 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h"
+#else
+  #include  "envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/config_source.upb.h"
+#else
+  #include  "envoy/api/v2/core/config_source.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/protocol.upb.h"
+#else
+  #include  "envoy/api/v2/core/protocol.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/route.upb.h"
+#else
+  #include  "envoy/api/v2/route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/scoped_route.upb.h"
+#else
+  #include  "envoy/api/v2/scoped_route.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/filter/accesslog/v2/accesslog.upb.h"
+#else
+  #include  "envoy/config/filter/accesslog/v2/accesslog.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h"
+#else
+  #include  "envoy/type/tracing/v2/custom_tag.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_submsgs[22] = {
+  &envoy_api_v2_RouteConfiguration_msginit,
+  &envoy_api_v2_core_Http1ProtocolOptions_msginit,
+  &envoy_api_v2_core_Http2ProtocolOptions_msginit,
+  &envoy_api_v2_core_HttpProtocolOptions_msginit,
+  &envoy_config_filter_accesslog_v2_AccessLog_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_Rds_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit,
+  &google_protobuf_BoolValue_msginit,
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager__fields[34] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(36, 40), 0, 0, 9, 1},
+  {3, UPB_SIZE(136, 240), UPB_SIZE(-141, -249), 10, 11, 1},
+  {4, UPB_SIZE(136, 240), UPB_SIZE(-141, -249), 0, 11, 1},
+  {5, UPB_SIZE(124, 216), 0, 9, 11, 3},
+  {6, UPB_SIZE(60, 88), 0, 12, 11, 1},
+  {7, UPB_SIZE(64, 96), 0, 7, 11, 1},
+  {8, UPB_SIZE(68, 104), 0, 1, 11, 1},
+  {9, UPB_SIZE(72, 112), 0, 2, 11, 1},
+  {10, UPB_SIZE(44, 56), 0, 0, 9, 1},
+  {11, UPB_SIZE(76, 120), 0, 13, 11, 1},
+  {12, UPB_SIZE(80, 128), 0, 13, 11, 1},
+  {13, UPB_SIZE(128, 224), 0, 4, 11, 3},
+  {14, UPB_SIZE(84, 136), 0, 12, 11, 1},
+  {15, UPB_SIZE(88, 144), 0, 12, 11, 1},
+  {16, UPB_SIZE(8, 8), 0, 0, 14, 1},
+  {17, UPB_SIZE(92, 152), 0, 6, 11, 1},
+  {18, UPB_SIZE(28, 28), 0, 0, 8, 1},
+  {19, UPB_SIZE(24, 24), 0, 0, 13, 1},
+  {20, UPB_SIZE(29, 29), 0, 0, 8, 1},
+  {21, UPB_SIZE(30, 30), 0, 0, 8, 1},
+  {22, UPB_SIZE(52, 72), 0, 0, 9, 1},
+  {23, UPB_SIZE(132, 232), 0, 8, 11, 3},
+  {24, UPB_SIZE(96, 160), 0, 13, 11, 1},
+  {25, UPB_SIZE(100, 168), 0, 5, 11, 1},
+  {26, UPB_SIZE(104, 176), 0, 13, 11, 1},
+  {28, UPB_SIZE(108, 184), 0, 13, 11, 1},
+  {29, UPB_SIZE(112, 192), 0, 14, 11, 1},
+  {30, UPB_SIZE(116, 200), 0, 12, 11, 1},
+  {31, UPB_SIZE(136, 240), UPB_SIZE(-141, -249), 11, 11, 1},
+  {32, UPB_SIZE(31, 31), 0, 0, 8, 1},
+  {33, UPB_SIZE(32, 32), 0, 0, 8, 1},
+  {34, UPB_SIZE(16, 16), 0, 0, 14, 1},
+  {35, UPB_SIZE(120, 208), 0, 3, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager__fields[0],
+  UPB_SIZE(144, 256), 34, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_submsgs[5] = {
+  &envoy_type_Percent_msginit,
+  &envoy_type_tracing_v2_CustomTag_msginit,
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing__fields[8] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(28, 48), 0, 0, 9, 3},
+  {3, UPB_SIZE(12, 16), 0, 0, 11, 1},
+  {4, UPB_SIZE(16, 24), 0, 0, 11, 1},
+  {5, UPB_SIZE(20, 32), 0, 0, 11, 1},
+  {6, UPB_SIZE(8, 8), 0, 0, 8, 1},
+  {7, UPB_SIZE(24, 40), 0, 2, 11, 1},
+  {8, UPB_SIZE(32, 56), 0, 1, 11, 3},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing__fields[0],
+  UPB_SIZE(40, 64), 8, false,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit = {
+  NULL,
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig__fields[0],
+  UPB_SIZE(1, 1), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_submsgs[1] = {
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails__fields[5] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+  {4, UPB_SIZE(1, 1), 0, 0, 8, 1},
+  {5, UPB_SIZE(2, 2), 0, 0, 8, 1},
+  {6, UPB_SIZE(3, 3), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails__fields[0],
+  UPB_SIZE(8, 16), 5, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_submsgs[2] = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit,
+  &google_protobuf_BoolValue_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 0, 0, 11, 3},
+  {3, UPB_SIZE(8, 16), 0, 1, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_Rds_submsgs[1] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_Rds__fields[2] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_Rds_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_Rds_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_Rds__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_submsgs[1] = {
+  &envoy_api_v2_ScopedRouteConfiguration_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_submsgs[4] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit,
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 3, 11, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {4, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 2, 11, 1},
+  {5, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 1, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes__fields[0],
+  UPB_SIZE(24, 48), 5, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_submsgs[1] = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_submsgs[1] = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder__fields[1] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_submsgs[1] = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor__fields[4] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {3, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 0, 13, 1},
+  {4, UPB_SIZE(16, 32), UPB_SIZE(-21, -41), 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit = {
+  NULL,
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_ScopedRds_submsgs[1] = {
+  &envoy_api_v2_core_ConfigSource_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_ScopedRds__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_ScopedRds__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const envoy_config_filter_network_http_connection_manager_v2_HttpFilter_submsgs[2] = {
+  &google_protobuf_Any_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field envoy_config_filter_network_http_connection_manager_v2_HttpFilter__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {4, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit = {
+  &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_submsgs[0],
+  &envoy_config_filter_network_http_connection_manager_v2_HttpFilter__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h
new file mode 100644
index 0000000..d650a9e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.upb.h	
@@ -0,0 +1,1096 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/filter/network/http_connection_manager/v2/http_connection_manager.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_
+#define ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig;
+struct envoy_config_filter_network_http_connection_manager_v2_Rds;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement;
+struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds;
+struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_Rds envoy_config_filter_network_http_connection_manager_v2_Rds;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds envoy_config_filter_network_http_connection_manager_v2_ScopedRds;
+typedef struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter envoy_config_filter_network_http_connection_manager_v2_HttpFilter;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_Rds_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit;
+extern const upb_msglayout envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit;
+struct envoy_api_v2_RouteConfiguration;
+struct envoy_api_v2_ScopedRouteConfiguration;
+struct envoy_api_v2_core_ConfigSource;
+struct envoy_api_v2_core_Http1ProtocolOptions;
+struct envoy_api_v2_core_Http2ProtocolOptions;
+struct envoy_api_v2_core_HttpProtocolOptions;
+struct envoy_config_filter_accesslog_v2_AccessLog;
+struct envoy_type_Percent;
+struct envoy_type_tracing_v2_CustomTag;
+struct google_protobuf_Any;
+struct google_protobuf_BoolValue;
+struct google_protobuf_Duration;
+struct google_protobuf_Struct;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout envoy_api_v2_RouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_ScopedRouteConfiguration_msginit;
+extern const upb_msglayout envoy_api_v2_core_ConfigSource_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http1ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_Http2ProtocolOptions_msginit;
+extern const upb_msglayout envoy_api_v2_core_HttpProtocolOptions_msginit;
+extern const upb_msglayout envoy_config_filter_accesslog_v2_AccessLog_msginit;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout google_protobuf_Any_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_AUTO = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP1 = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP2 = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_HTTP3 = 3
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_CodecType;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SANITIZE = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_FORWARD_ONLY = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_APPEND_FORWARD = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SANITIZE_SET = 3,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ALWAYS_FORWARD_ONLY = 4
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ForwardClientCertDetails;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_OVERWRITE = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_APPEND_IF_ABSENT = 1,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_PASS_THROUGH = 2
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_ServerHeaderTransformation;
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_INGRESS = 0,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_EGRESS = 1
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_OperationName;
+
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_rds = 3,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_route_config = 4,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_scoped_routes = 31,
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_case(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager* msg) { return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(140, 248)); }
+
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_codec_type(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stat_prefix(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 40)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_rds(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 3); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_Rds* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_rds(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_Rds*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 3, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_route_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 4); }
+UPB_INLINE const struct envoy_api_v2_RouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const struct envoy_api_v2_RouteConfiguration*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 4, NULL); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_filters(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const*)_upb_array_accessor(msg, UPB_SIZE(124, 216), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_user_agent(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(60, 88)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_tracing(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*, UPB_SIZE(64, 96)); }
+UPB_INLINE const struct envoy_api_v2_core_Http1ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(68, 104)); }
+UPB_INLINE const struct envoy_api_v2_core_Http2ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http2_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_server_name(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 56)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_idle_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(76, 120)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_drain_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(80, 128)); }
+UPB_INLINE const struct envoy_config_filter_accesslog_v2_AccessLog* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_access_log(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const struct envoy_config_filter_accesslog_v2_AccessLog* const*)_upb_array_accessor(msg, UPB_SIZE(128, 224), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_use_remote_address(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(84, 136)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_generate_request_id(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(88, 144)); }
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_forward_client_cert_details(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_current_client_cert_details(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*, UPB_SIZE(92, 152)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_proxy_100_continue(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)); }
+UPB_INLINE uint32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_xff_num_trusted_hops(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_represent_ipv4_remote_address_as_ipv4_mapped_ipv6(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(29, 29)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_skip_xff_append(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(30, 30)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_via(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 72)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_upgrade_configs(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* const*)_upb_array_accessor(msg, UPB_SIZE(132, 232), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stream_idle_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(96, 160)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_internal_address_config(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*, UPB_SIZE(100, 168)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_delayed_close_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(104, 176)); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_request_timeout(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(108, 184)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_max_request_headers_kb(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(112, 192)); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_normalize_path(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(116, 200)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_has_scoped_routes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(140, 248), 31); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_scoped_routes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*, UPB_SIZE(136, 240), UPB_SIZE(140, 248), 31, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_preserve_external_request_id(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(31, 31)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_merge_slashes(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(32, 32)); }
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_server_header_transformation(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_HttpProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_common_http_protocol_options(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(120, 208)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_codec_type(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stat_prefix(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 40)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_rds(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_Rds* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_Rds*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 3);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_Rds* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_rds(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_Rds* sub = (struct envoy_config_filter_network_http_connection_manager_v2_Rds*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_rds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_Rds*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_rds(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_route_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_RouteConfiguration* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_api_v2_RouteConfiguration*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 4);
+}
+UPB_INLINE struct envoy_api_v2_RouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_route_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_RouteConfiguration* sub = (struct envoy_api_v2_RouteConfiguration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_route_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_RouteConfiguration*)upb_msg_new(&envoy_api_v2_RouteConfiguration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_route_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(124, 216), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(124, 216), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_http_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(124, 216), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_add_user_agent(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(60, 88)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_add_user_agent(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_user_agent(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_add_user_agent(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_tracing(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_tracing(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_tracing(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_tracing(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_Http1ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http1ProtocolOptions*, UPB_SIZE(68, 104)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http1ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http1ProtocolOptions* sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http1ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http1ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http2_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_Http2ProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Http2ProtocolOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Http2ProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_http2_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Http2ProtocolOptions* sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_http2_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Http2ProtocolOptions*)upb_msg_new(&envoy_api_v2_core_Http2ProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_http2_protocol_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_server_name(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 56)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(76, 120)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_drain_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(80, 128)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_drain_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_drain_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_drain_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (struct envoy_config_filter_accesslog_v2_AccessLog**)_upb_array_mutable_accessor(msg, UPB_SIZE(128, 224), len);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_config_filter_accesslog_v2_AccessLog**)_upb_array_resize_accessor(msg, UPB_SIZE(128, 224), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_accesslog_v2_AccessLog* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_access_log(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_accesslog_v2_AccessLog* sub = (struct envoy_config_filter_accesslog_v2_AccessLog*)upb_msg_new(&envoy_config_filter_accesslog_v2_AccessLog_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(128, 224), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_use_remote_address(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(84, 136)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_use_remote_address(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_use_remote_address(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_use_remote_address(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_generate_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(88, 144)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_generate_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_generate_request_id(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_generate_request_id(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_forward_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_set_current_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*, UPB_SIZE(92, 152)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_set_current_client_cert_details(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_current_client_cert_details(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_set_current_client_cert_details(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_proxy_100_continue(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(28, 28)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_xff_num_trusted_hops(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_represent_ipv4_remote_address_as_ipv4_mapped_ipv6(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(29, 29)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_skip_xff_append(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(30, 30)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_via(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 72)) = value;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig**)_upb_array_mutable_accessor(msg, UPB_SIZE(132, 232), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_resize_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig**)_upb_array_resize_accessor(msg, UPB_SIZE(132, 232), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_add_upgrade_configs(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(132, 232), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stream_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(96, 160)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_stream_idle_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_stream_idle_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_stream_idle_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_internal_address_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*, UPB_SIZE(100, 168)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_internal_address_config(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_internal_address_config(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_internal_address_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_delayed_close_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(104, 176)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_delayed_close_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_delayed_close_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_delayed_close_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_request_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(108, 184)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_request_timeout(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_request_timeout(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_request_timeout(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_max_request_headers_kb(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(112, 192)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_max_request_headers_kb(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_max_request_headers_kb(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_max_request_headers_kb(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_normalize_path(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(116, 200)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_normalize_path(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_normalize_path(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_normalize_path(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_scoped_routes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*, UPB_SIZE(136, 240), value, UPB_SIZE(140, 248), 31);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_scoped_routes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_scoped_routes(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_scoped_routes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_preserve_external_request_id(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(31, 31)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_merge_slashes(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_server_header_transformation(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_common_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, struct envoy_api_v2_core_HttpProtocolOptions* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_HttpProtocolOptions*, UPB_SIZE(120, 208)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_HttpProtocolOptions* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_mutable_common_http_protocol_options(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_HttpProtocolOptions* sub = (struct envoy_api_v2_core_HttpProtocolOptions*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_common_http_protocol_options(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_HttpProtocolOptions*)upb_msg_new(&envoy_api_v2_core_HttpProtocolOptions_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_set_common_http_protocol_options(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.Tracing */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_operation_name(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_request_headers_for_tags(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 48), len); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_client_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_random_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(16, 24)); }
+UPB_INLINE const struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_overall_sampling(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_Percent*, UPB_SIZE(20, 32)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_verbose(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_max_path_tag_length(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)); }
+UPB_INLINE const struct envoy_type_tracing_v2_CustomTag* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_custom_tags(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) { return (const struct envoy_type_tracing_v2_CustomTag* const*)_upb_array_accessor(msg, UPB_SIZE(32, 56), len); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_operation_name(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 48), len);
+}
+UPB_INLINE upb_strview* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_resize_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_add_request_headers_for_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_client_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_client_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_client_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_client_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_random_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_random_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_random_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_random_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_overall_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct envoy_type_Percent* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_Percent*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct envoy_type_Percent* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_overall_sampling(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_Percent* sub = (struct envoy_type_Percent*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_overall_sampling(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_Percent*)upb_msg_new(&envoy_type_Percent_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_overall_sampling(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_verbose(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_max_path_tag_length(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_max_path_tag_length(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_max_path_tag_length(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_set_max_path_tag_length(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_mutable_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t *len) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 56), len);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_resize_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_type_tracing_v2_CustomTag**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing_add_custom_tags(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_Tracing *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag* sub = (struct envoy_type_tracing_v2_CustomTag*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.InternalAddressConfig */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_msginit, arena, len);
+}
+
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_unix_sockets(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig_set_unix_sockets(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_InternalAddressConfig *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.SetCurrentClientCertDetails */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_subject(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_cert(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_dns(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_uri(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_chain(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_subject(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_mutable_subject(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_subject(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_subject(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_cert(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_dns(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_uri(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails_set_chain(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_SetCurrentClientCertDetails *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.UpgradeConfig */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *ret = envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_upgrade_type(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_filters(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+UPB_INLINE const struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_enabled(const envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_upgrade_type(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_mutable_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter** envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_resize_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_add_filters(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter* sub = (struct envoy_config_filter_network_http_connection_manager_v2_HttpFilter*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_enabled(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, struct google_protobuf_BoolValue* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_BoolValue*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_BoolValue* envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_mutable_enabled(envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig *msg, upb_arena *arena) {
+  struct google_protobuf_BoolValue* sub = (struct google_protobuf_BoolValue*)envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_enabled(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_BoolValue*)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpConnectionManager_UpgradeConfig_set_enabled(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.Rds */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_Rds *envoy_config_filter_network_http_connection_manager_v2_Rds_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_Rds *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_Rds *envoy_config_filter_network_http_connection_manager_v2_Rds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_Rds *ret = envoy_config_filter_network_http_connection_manager_v2_Rds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_Rds_serialize(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_Rds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_Rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_Rds_route_config_name(const envoy_config_filter_network_http_connection_manager_v2_Rds *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_Rds_set_config_source(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_Rds_mutable_config_source(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_Rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_Rds_set_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_Rds_set_route_config_name(envoy_config_filter_network_http_connection_manager_v2_Rds *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRouteConfigurationsList */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_ScopedRouteConfiguration* const* envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_scoped_route_configurations(const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t *len) { return (const struct envoy_api_v2_ScopedRouteConfiguration* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration** envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_mutable_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t *len) {
+  return (struct envoy_api_v2_ScopedRouteConfiguration**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration** envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_resize_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_ScopedRouteConfiguration**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_ScopedRouteConfiguration* envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_add_scoped_route_configurations(envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList *msg, upb_arena *arena) {
+  struct envoy_api_v2_ScopedRouteConfiguration* sub = (struct envoy_api_v2_ScopedRouteConfiguration*)upb_msg_new(&envoy_api_v2_ScopedRouteConfiguration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_scoped_route_configurations_list = 4,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_scoped_rds = 5,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_config_specifier_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_name(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scope_key_builder(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_has_scoped_route_configurations_list(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_route_configurations_list(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_has_scoped_rds(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 5); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRds* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_rds(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRds*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 5, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_name(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scope_key_builder(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* value) {
+  UPB_FIELD_AT(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scope_key_builder(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scope_key_builder(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scope_key_builder(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_rds_config_source(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_route_configurations_list(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scoped_route_configurations_list(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_route_configurations_list(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRouteConfigurationsList_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_route_configurations_list(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_rds(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRds* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRds*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 5);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_mutable_scoped_rds(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_scoped_rds(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRds*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_set_scoped_rds(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* const* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_fragments(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t *len) { return (const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder** envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_mutable_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t *len) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder** envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_resize_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, size_t len, upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_add_fragments(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_header_value_extractor = 1,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_has_header_value_extractor(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_header_value_extractor(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_set_header_value_extractor(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_mutable_header_value_extractor(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_header_value_extractor(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_set_header_value_extractor(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder.HeaderValueExtractor */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_index = 3,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_element = 4,
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_case(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor* msg) { return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_extract_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 40)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_name(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element_separator(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_has_index(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 3); }
+UPB_INLINE uint32_t envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_index(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_READ_ONEOF(msg, uint32_t, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 3, 0); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_has_element(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(20, 40), 4); }
+UPB_INLINE const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg) { return UPB_READ_ONEOF(msg, const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*, UPB_SIZE(16, 32), UPB_SIZE(20, 40), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_name(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element_separator(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_index(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, uint32_t value) {
+  UPB_WRITE_ONEOF(msg, uint32_t, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 3);
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* value) {
+  UPB_WRITE_ONEOF(msg, envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*, UPB_SIZE(16, 32), value, UPB_SIZE(20, 40), 4);
+}
+UPB_INLINE struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_mutable_element(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor *msg, upb_arena *arena) {
+  struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement* sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*)envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_element(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement*)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_set_element(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRoutes.ScopeKeyBuilder.FragmentBuilder.HeaderValueExtractor.KvElement */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_separator(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_key(const envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_set_separator(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement_set_key(envoy_config_filter_network_http_connection_manager_v2_ScopedRoutes_ScopeKeyBuilder_FragmentBuilder_HeaderValueExtractor_KvElement *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.ScopedRds */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRds *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_ScopedRds *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_ScopedRds *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_ScopedRds *ret = envoy_config_filter_network_http_connection_manager_v2_ScopedRds_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_ScopedRds_serialize(const envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_ScopedRds_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRds_scoped_rds_config_source(const envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_ScopedRds_set_scoped_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, struct envoy_api_v2_core_ConfigSource* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_ConfigSource*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_ConfigSource* envoy_config_filter_network_http_connection_manager_v2_ScopedRds_mutable_scoped_rds_config_source(envoy_config_filter_network_http_connection_manager_v2_ScopedRds *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_ConfigSource* sub = (struct envoy_api_v2_core_ConfigSource*)envoy_config_filter_network_http_connection_manager_v2_ScopedRds_scoped_rds_config_source(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_ConfigSource*)upb_msg_new(&envoy_api_v2_core_ConfigSource_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_ScopedRds_set_scoped_rds_config_source(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.config.filter.network.http_connection_manager.v2.HttpFilter */
+
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_new(upb_arena *arena) {
+  return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter *)upb_msg_new(&envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena);
+}
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter *ret = envoy_config_filter_network_http_connection_manager_v2_HttpFilter_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_filter_network_http_connection_manager_v2_HttpFilter_serialize(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_filter_network_http_connection_manager_v2_HttpFilter_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_config = 2,
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_typed_config = 4,
+  envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_NOT_SET = 0
+} envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases;
+UPB_INLINE envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_case(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter* msg) { return (envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_config_filter_network_http_connection_manager_v2_HttpFilter_name(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpFilter_has_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const struct google_protobuf_Struct* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Struct*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_config_filter_network_http_connection_manager_v2_HttpFilter_has_typed_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const struct google_protobuf_Any* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_typed_config(const envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg) { return UPB_READ_ONEOF(msg, const struct google_protobuf_Any*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_name(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, struct google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Struct*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct google_protobuf_Struct* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_mutable_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)envoy_config_filter_network_http_connection_manager_v2_HttpFilter_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_config(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_typed_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, struct google_protobuf_Any* value) {
+  UPB_WRITE_ONEOF(msg, struct google_protobuf_Any*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_filter_network_http_connection_manager_v2_HttpFilter_mutable_typed_config(envoy_config_filter_network_http_connection_manager_v2_HttpFilter *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_filter_network_http_connection_manager_v2_HttpFilter_typed_config(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_filter_network_http_connection_manager_v2_HttpFilter_set_typed_config(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_FILTER_NETWORK_HTTP_CONNECTION_MANAGER_V2_HTTP_CONNECTION_MANAGER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.c
new file mode 100644
index 0000000..86c8a24
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.c	
@@ -0,0 +1,56 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/listener/v2/api_listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h"
+#else
+  #include  "envoy/config/listener/v2/api_listener.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_config_listener_v2_ApiListener_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field envoy_config_listener_v2_ApiListener__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_config_listener_v2_ApiListener_msginit = {
+  &envoy_config_listener_v2_ApiListener_submsgs[0],
+  &envoy_config_listener_v2_ApiListener__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h
new file mode 100644
index 0000000..05e318e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/config/listener/v2/api_listener.upb.h	
@@ -0,0 +1,89 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/config/listener/v2/api_listener.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_
+#define ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_config_listener_v2_ApiListener;
+typedef struct envoy_config_listener_v2_ApiListener envoy_config_listener_v2_ApiListener;
+extern const upb_msglayout envoy_config_listener_v2_ApiListener_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* envoy.config.listener.v2.ApiListener */
+
+UPB_INLINE envoy_config_listener_v2_ApiListener *envoy_config_listener_v2_ApiListener_new(upb_arena *arena) {
+  return (envoy_config_listener_v2_ApiListener *)upb_msg_new(&envoy_config_listener_v2_ApiListener_msginit, arena);
+}
+UPB_INLINE envoy_config_listener_v2_ApiListener *envoy_config_listener_v2_ApiListener_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_config_listener_v2_ApiListener *ret = envoy_config_listener_v2_ApiListener_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_config_listener_v2_ApiListener_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_config_listener_v2_ApiListener_serialize(const envoy_config_listener_v2_ApiListener *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_config_listener_v2_ApiListener_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Any* envoy_config_listener_v2_ApiListener_api_listener(const envoy_config_listener_v2_ApiListener *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Any*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_config_listener_v2_ApiListener_set_api_listener(envoy_config_listener_v2_ApiListener *msg, struct google_protobuf_Any* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Any*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_Any* envoy_config_listener_v2_ApiListener_mutable_api_listener(envoy_config_listener_v2_ApiListener *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)envoy_config_listener_v2_ApiListener_api_listener(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+    if (!sub) return NULL;
+    envoy_config_listener_v2_ApiListener_set_api_listener(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_CONFIG_LISTENER_V2_API_LISTENER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.c
new file mode 100644
index 0000000..b2ea536
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.c	
@@ -0,0 +1,43 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/discovery/v2/ads.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h"
+#else
+  #include  "envoy/service/discovery/v2/ads.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/discovery.upb.h"
+#else
+  #include  "envoy/api/v2/discovery.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout envoy_service_discovery_v2_AdsDummy_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h
new file mode 100644
index 0000000..55f49ac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/discovery/v2/ads.upb.h	
@@ -0,0 +1,74 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/discovery/v2/ads.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_
+#define ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_service_discovery_v2_AdsDummy;
+typedef struct envoy_service_discovery_v2_AdsDummy envoy_service_discovery_v2_AdsDummy;
+extern const upb_msglayout envoy_service_discovery_v2_AdsDummy_msginit;
+
+
+/* envoy.service.discovery.v2.AdsDummy */
+
+UPB_INLINE envoy_service_discovery_v2_AdsDummy *envoy_service_discovery_v2_AdsDummy_new(upb_arena *arena) {
+  return (envoy_service_discovery_v2_AdsDummy *)upb_msg_new(&envoy_service_discovery_v2_AdsDummy_msginit, arena);
+}
+UPB_INLINE envoy_service_discovery_v2_AdsDummy *envoy_service_discovery_v2_AdsDummy_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_discovery_v2_AdsDummy *ret = envoy_service_discovery_v2_AdsDummy_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_discovery_v2_AdsDummy_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_discovery_v2_AdsDummy_serialize(const envoy_service_discovery_v2_AdsDummy *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_discovery_v2_AdsDummy_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_SERVICE_DISCOVERY_V2_ADS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.c
new file mode 100644
index 0000000..0753349
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.c	
@@ -0,0 +1,84 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/load_stats/v2/lrs.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h"
+#else
+  #include  "envoy/service/load_stats/v2/lrs.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/core/base.upb.h"
+#else
+  #include  "envoy/api/v2/core/base.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/api/v2/endpoint/load_report.upb.h"
+#else
+  #include  "envoy/api/v2/endpoint/load_report.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_service_load_stats_v2_LoadStatsRequest_submsgs[2] = {
+  &envoy_api_v2_core_Node_msginit,
+  &envoy_api_v2_endpoint_ClusterStats_msginit,
+};
+
+static const upb_msglayout_field envoy_service_load_stats_v2_LoadStatsRequest__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 1, 11, 3},
+};
+
+const upb_msglayout envoy_service_load_stats_v2_LoadStatsRequest_msginit = {
+  &envoy_service_load_stats_v2_LoadStatsRequest_submsgs[0],
+  &envoy_service_load_stats_v2_LoadStatsRequest__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const envoy_service_load_stats_v2_LoadStatsResponse_submsgs[1] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field envoy_service_load_stats_v2_LoadStatsResponse__fields[3] = {
+  {1, UPB_SIZE(8, 16), 0, 0, 9, 3},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_service_load_stats_v2_LoadStatsResponse_msginit = {
+  &envoy_service_load_stats_v2_LoadStatsResponse_submsgs[0],
+  &envoy_service_load_stats_v2_LoadStatsResponse__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h
new file mode 100644
index 0000000..615cdb9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/service/load_stats/v2/lrs.upb.h	
@@ -0,0 +1,154 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/service/load_stats/v2/lrs.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_
+#define ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_service_load_stats_v2_LoadStatsRequest;
+struct envoy_service_load_stats_v2_LoadStatsResponse;
+typedef struct envoy_service_load_stats_v2_LoadStatsRequest envoy_service_load_stats_v2_LoadStatsRequest;
+typedef struct envoy_service_load_stats_v2_LoadStatsResponse envoy_service_load_stats_v2_LoadStatsResponse;
+extern const upb_msglayout envoy_service_load_stats_v2_LoadStatsRequest_msginit;
+extern const upb_msglayout envoy_service_load_stats_v2_LoadStatsResponse_msginit;
+struct envoy_api_v2_core_Node;
+struct envoy_api_v2_endpoint_ClusterStats;
+struct google_protobuf_Duration;
+extern const upb_msglayout envoy_api_v2_core_Node_msginit;
+extern const upb_msglayout envoy_api_v2_endpoint_ClusterStats_msginit;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* envoy.service.load_stats.v2.LoadStatsRequest */
+
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsRequest *envoy_service_load_stats_v2_LoadStatsRequest_new(upb_arena *arena) {
+  return (envoy_service_load_stats_v2_LoadStatsRequest *)upb_msg_new(&envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena);
+}
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsRequest *envoy_service_load_stats_v2_LoadStatsRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_load_stats_v2_LoadStatsRequest *ret = envoy_service_load_stats_v2_LoadStatsRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_load_stats_v2_LoadStatsRequest_serialize(const envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_load_stats_v2_LoadStatsRequest_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_api_v2_core_Node* envoy_service_load_stats_v2_LoadStatsRequest_node(const envoy_service_load_stats_v2_LoadStatsRequest *msg) { return UPB_FIELD_AT(msg, const struct envoy_api_v2_core_Node*, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct envoy_api_v2_endpoint_ClusterStats* const* envoy_service_load_stats_v2_LoadStatsRequest_cluster_stats(const envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t *len) { return (const struct envoy_api_v2_endpoint_ClusterStats* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsRequest_set_node(envoy_service_load_stats_v2_LoadStatsRequest *msg, struct envoy_api_v2_core_Node* value) {
+  UPB_FIELD_AT(msg, struct envoy_api_v2_core_Node*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct envoy_api_v2_core_Node* envoy_service_load_stats_v2_LoadStatsRequest_mutable_node(envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_core_Node* sub = (struct envoy_api_v2_core_Node*)envoy_service_load_stats_v2_LoadStatsRequest_node(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_api_v2_core_Node*)upb_msg_new(&envoy_api_v2_core_Node_msginit, arena);
+    if (!sub) return NULL;
+    envoy_service_load_stats_v2_LoadStatsRequest_set_node(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats** envoy_service_load_stats_v2_LoadStatsRequest_mutable_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t *len) {
+  return (struct envoy_api_v2_endpoint_ClusterStats**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats** envoy_service_load_stats_v2_LoadStatsRequest_resize_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, size_t len, upb_arena *arena) {
+  return (struct envoy_api_v2_endpoint_ClusterStats**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_api_v2_endpoint_ClusterStats* envoy_service_load_stats_v2_LoadStatsRequest_add_cluster_stats(envoy_service_load_stats_v2_LoadStatsRequest *msg, upb_arena *arena) {
+  struct envoy_api_v2_endpoint_ClusterStats* sub = (struct envoy_api_v2_endpoint_ClusterStats*)upb_msg_new(&envoy_api_v2_endpoint_ClusterStats_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.service.load_stats.v2.LoadStatsResponse */
+
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsResponse *envoy_service_load_stats_v2_LoadStatsResponse_new(upb_arena *arena) {
+  return (envoy_service_load_stats_v2_LoadStatsResponse *)upb_msg_new(&envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena);
+}
+UPB_INLINE envoy_service_load_stats_v2_LoadStatsResponse *envoy_service_load_stats_v2_LoadStatsResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_service_load_stats_v2_LoadStatsResponse *ret = envoy_service_load_stats_v2_LoadStatsResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_service_load_stats_v2_LoadStatsResponse_serialize(const envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_service_load_stats_v2_LoadStatsResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* envoy_service_load_stats_v2_LoadStatsResponse_clusters(const envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+UPB_INLINE const struct google_protobuf_Duration* envoy_service_load_stats_v2_LoadStatsResponse_load_reporting_interval(const envoy_service_load_stats_v2_LoadStatsResponse *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool envoy_service_load_stats_v2_LoadStatsResponse_report_endpoint_granularity(const envoy_service_load_stats_v2_LoadStatsResponse *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE upb_strview* envoy_service_load_stats_v2_LoadStatsResponse_mutable_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* envoy_service_load_stats_v2_LoadStatsResponse_resize_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool envoy_service_load_stats_v2_LoadStatsResponse_add_clusters(envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsResponse_set_load_reporting_interval(envoy_service_load_stats_v2_LoadStatsResponse *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* envoy_service_load_stats_v2_LoadStatsResponse_mutable_load_reporting_interval(envoy_service_load_stats_v2_LoadStatsResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)envoy_service_load_stats_v2_LoadStatsResponse_load_reporting_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    envoy_service_load_stats_v2_LoadStatsResponse_set_load_reporting_interval(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_service_load_stats_v2_LoadStatsResponse_set_report_endpoint_granularity(envoy_service_load_stats_v2_LoadStatsResponse *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_SERVICE_LOAD_STATS_V2_LRS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.c
new file mode 100644
index 0000000..c9e05bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.c	
@@ -0,0 +1,32 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/http.upb.h"
+#else
+  #include  "envoy/type/http.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.h
new file mode 100644
index 0000000..e3a30d8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/http.upb.h	
@@ -0,0 +1,60 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_HTTP_PROTO_UPB_H_
+#define ENVOY_TYPE_HTTP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  envoy_type_HTTP1 = 0,
+  envoy_type_HTTP2 = 1,
+  envoy_type_HTTP3 = 2
+} envoy_type_CodecClientType;
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_HTTP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.c
new file mode 100644
index 0000000..608b069
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.c	
@@ -0,0 +1,71 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/regex.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h"
+#else
+  #include  "envoy/type/matcher/regex.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_type_matcher_RegexMatcher_submsgs[1] = {
+  &envoy_type_matcher_RegexMatcher_GoogleRE2_msginit,
+};
+
+static const upb_msglayout_field envoy_type_matcher_RegexMatcher__fields[2] = {
+  {1, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_matcher_RegexMatcher_msginit = {
+  &envoy_type_matcher_RegexMatcher_submsgs[0],
+  &envoy_type_matcher_RegexMatcher__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_type_matcher_RegexMatcher_GoogleRE2_submsgs[1] = {
+  &google_protobuf_UInt32Value_msginit,
+};
+
+static const upb_msglayout_field envoy_type_matcher_RegexMatcher_GoogleRE2__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+};
+
+const upb_msglayout envoy_type_matcher_RegexMatcher_GoogleRE2_msginit = {
+  &envoy_type_matcher_RegexMatcher_GoogleRE2_submsgs[0],
+  &envoy_type_matcher_RegexMatcher_GoogleRE2__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h
new file mode 100644
index 0000000..6709595
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h	
@@ -0,0 +1,132 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/regex.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_
+#define ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_matcher_RegexMatcher;
+struct envoy_type_matcher_RegexMatcher_GoogleRE2;
+typedef struct envoy_type_matcher_RegexMatcher envoy_type_matcher_RegexMatcher;
+typedef struct envoy_type_matcher_RegexMatcher_GoogleRE2 envoy_type_matcher_RegexMatcher_GoogleRE2;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_GoogleRE2_msginit;
+struct google_protobuf_UInt32Value;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+
+
+/* envoy.type.matcher.RegexMatcher */
+
+UPB_INLINE envoy_type_matcher_RegexMatcher *envoy_type_matcher_RegexMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_RegexMatcher *)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_RegexMatcher *envoy_type_matcher_RegexMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_RegexMatcher *ret = envoy_type_matcher_RegexMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_RegexMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_RegexMatcher_serialize(const envoy_type_matcher_RegexMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_RegexMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_matcher_RegexMatcher_engine_type_google_re2 = 1,
+  envoy_type_matcher_RegexMatcher_engine_type_NOT_SET = 0
+} envoy_type_matcher_RegexMatcher_engine_type_oneofcases;
+UPB_INLINE envoy_type_matcher_RegexMatcher_engine_type_oneofcases envoy_type_matcher_RegexMatcher_engine_type_case(const envoy_type_matcher_RegexMatcher* msg) { return (envoy_type_matcher_RegexMatcher_engine_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_type_matcher_RegexMatcher_has_google_re2(const envoy_type_matcher_RegexMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const envoy_type_matcher_RegexMatcher_GoogleRE2* envoy_type_matcher_RegexMatcher_google_re2(const envoy_type_matcher_RegexMatcher *msg) { return UPB_READ_ONEOF(msg, const envoy_type_matcher_RegexMatcher_GoogleRE2*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE upb_strview envoy_type_matcher_RegexMatcher_regex(const envoy_type_matcher_RegexMatcher *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_RegexMatcher_set_google_re2(envoy_type_matcher_RegexMatcher *msg, envoy_type_matcher_RegexMatcher_GoogleRE2* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_matcher_RegexMatcher_GoogleRE2*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher_GoogleRE2* envoy_type_matcher_RegexMatcher_mutable_google_re2(envoy_type_matcher_RegexMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher_GoogleRE2* sub = (struct envoy_type_matcher_RegexMatcher_GoogleRE2*)envoy_type_matcher_RegexMatcher_google_re2(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher_GoogleRE2*)upb_msg_new(&envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_RegexMatcher_set_google_re2(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_matcher_RegexMatcher_set_regex(envoy_type_matcher_RegexMatcher *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.matcher.RegexMatcher.GoogleRE2 */
+
+UPB_INLINE envoy_type_matcher_RegexMatcher_GoogleRE2 *envoy_type_matcher_RegexMatcher_GoogleRE2_new(upb_arena *arena) {
+  return (envoy_type_matcher_RegexMatcher_GoogleRE2 *)upb_msg_new(&envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_RegexMatcher_GoogleRE2 *envoy_type_matcher_RegexMatcher_GoogleRE2_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_RegexMatcher_GoogleRE2 *ret = envoy_type_matcher_RegexMatcher_GoogleRE2_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_RegexMatcher_GoogleRE2_serialize(const envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_RegexMatcher_GoogleRE2_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_UInt32Value* envoy_type_matcher_RegexMatcher_GoogleRE2_max_program_size(const envoy_type_matcher_RegexMatcher_GoogleRE2 *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_RegexMatcher_GoogleRE2_set_max_program_size(envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, struct google_protobuf_UInt32Value* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_UInt32Value*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct google_protobuf_UInt32Value* envoy_type_matcher_RegexMatcher_GoogleRE2_mutable_max_program_size(envoy_type_matcher_RegexMatcher_GoogleRE2 *msg, upb_arena *arena) {
+  struct google_protobuf_UInt32Value* sub = (struct google_protobuf_UInt32Value*)envoy_type_matcher_RegexMatcher_GoogleRE2_max_program_size(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_UInt32Value*)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_RegexMatcher_GoogleRE2_set_max_program_size(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_MATCHER_REGEX_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.c
new file mode 100644
index 0000000..2040c47
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.c	
@@ -0,0 +1,80 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/string.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/string.upb.h"
+#else
+  #include  "envoy/type/matcher/string.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/matcher/regex.upb.h"
+#else
+  #include  "envoy/type/matcher/regex.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/annotations/deprecation.upb.h"
+#else
+  #include  "envoy/annotations/deprecation.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_type_matcher_StringMatcher_submsgs[1] = {
+  &envoy_type_matcher_RegexMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_type_matcher_StringMatcher__fields[6] = {
+  {1, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {2, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {3, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {4, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {5, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 11, 1},
+  {6, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout envoy_type_matcher_StringMatcher_msginit = {
+  &envoy_type_matcher_StringMatcher_submsgs[0],
+  &envoy_type_matcher_StringMatcher__fields[0],
+  UPB_SIZE(16, 32), 6, false,
+};
+
+static const upb_msglayout *const envoy_type_matcher_ListStringMatcher_submsgs[1] = {
+  &envoy_type_matcher_StringMatcher_msginit,
+};
+
+static const upb_msglayout_field envoy_type_matcher_ListStringMatcher__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_type_matcher_ListStringMatcher_msginit = {
+  &envoy_type_matcher_ListStringMatcher_submsgs[0],
+  &envoy_type_matcher_ListStringMatcher__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h
new file mode 100644
index 0000000..9eefda4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/matcher/string.upb.h	
@@ -0,0 +1,157 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/matcher/string.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_
+#define ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_matcher_StringMatcher;
+struct envoy_type_matcher_ListStringMatcher;
+typedef struct envoy_type_matcher_StringMatcher envoy_type_matcher_StringMatcher;
+typedef struct envoy_type_matcher_ListStringMatcher envoy_type_matcher_ListStringMatcher;
+extern const upb_msglayout envoy_type_matcher_StringMatcher_msginit;
+extern const upb_msglayout envoy_type_matcher_ListStringMatcher_msginit;
+struct envoy_type_matcher_RegexMatcher;
+extern const upb_msglayout envoy_type_matcher_RegexMatcher_msginit;
+
+
+/* envoy.type.matcher.StringMatcher */
+
+UPB_INLINE envoy_type_matcher_StringMatcher *envoy_type_matcher_StringMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_StringMatcher *)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_StringMatcher *envoy_type_matcher_StringMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_StringMatcher *ret = envoy_type_matcher_StringMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_StringMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_StringMatcher_serialize(const envoy_type_matcher_StringMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_StringMatcher_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_matcher_StringMatcher_match_pattern_exact = 1,
+  envoy_type_matcher_StringMatcher_match_pattern_prefix = 2,
+  envoy_type_matcher_StringMatcher_match_pattern_suffix = 3,
+  envoy_type_matcher_StringMatcher_match_pattern_regex = 4,
+  envoy_type_matcher_StringMatcher_match_pattern_safe_regex = 5,
+  envoy_type_matcher_StringMatcher_match_pattern_NOT_SET = 0
+} envoy_type_matcher_StringMatcher_match_pattern_oneofcases;
+UPB_INLINE envoy_type_matcher_StringMatcher_match_pattern_oneofcases envoy_type_matcher_StringMatcher_match_pattern_case(const envoy_type_matcher_StringMatcher* msg) { return (envoy_type_matcher_StringMatcher_match_pattern_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_exact(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_exact(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_prefix(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_prefix(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_suffix(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_suffix(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_regex(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE upb_strview envoy_type_matcher_StringMatcher_regex(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_has_safe_regex(const envoy_type_matcher_StringMatcher *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const struct envoy_type_matcher_RegexMatcher* envoy_type_matcher_StringMatcher_safe_regex(const envoy_type_matcher_StringMatcher *msg) { return UPB_READ_ONEOF(msg, const struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 5, NULL); }
+UPB_INLINE bool envoy_type_matcher_StringMatcher_ignore_case(const envoy_type_matcher_StringMatcher *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_exact(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_prefix(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_suffix(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_regex(envoy_type_matcher_StringMatcher *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_safe_regex(envoy_type_matcher_StringMatcher *msg, struct envoy_type_matcher_RegexMatcher* value) {
+  UPB_WRITE_ONEOF(msg, struct envoy_type_matcher_RegexMatcher*, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_type_matcher_RegexMatcher* envoy_type_matcher_StringMatcher_mutable_safe_regex(envoy_type_matcher_StringMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_RegexMatcher* sub = (struct envoy_type_matcher_RegexMatcher*)envoy_type_matcher_StringMatcher_safe_regex(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_matcher_RegexMatcher*)upb_msg_new(&envoy_type_matcher_RegexMatcher_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_matcher_StringMatcher_set_safe_regex(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_matcher_StringMatcher_set_ignore_case(envoy_type_matcher_StringMatcher *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.matcher.ListStringMatcher */
+
+UPB_INLINE envoy_type_matcher_ListStringMatcher *envoy_type_matcher_ListStringMatcher_new(upb_arena *arena) {
+  return (envoy_type_matcher_ListStringMatcher *)upb_msg_new(&envoy_type_matcher_ListStringMatcher_msginit, arena);
+}
+UPB_INLINE envoy_type_matcher_ListStringMatcher *envoy_type_matcher_ListStringMatcher_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_matcher_ListStringMatcher *ret = envoy_type_matcher_ListStringMatcher_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_matcher_ListStringMatcher_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_matcher_ListStringMatcher_serialize(const envoy_type_matcher_ListStringMatcher *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_matcher_ListStringMatcher_msginit, arena, len);
+}
+
+UPB_INLINE const envoy_type_matcher_StringMatcher* const* envoy_type_matcher_ListStringMatcher_patterns(const envoy_type_matcher_ListStringMatcher *msg, size_t *len) { return (const envoy_type_matcher_StringMatcher* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE envoy_type_matcher_StringMatcher** envoy_type_matcher_ListStringMatcher_mutable_patterns(envoy_type_matcher_ListStringMatcher *msg, size_t *len) {
+  return (envoy_type_matcher_StringMatcher**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE envoy_type_matcher_StringMatcher** envoy_type_matcher_ListStringMatcher_resize_patterns(envoy_type_matcher_ListStringMatcher *msg, size_t len, upb_arena *arena) {
+  return (envoy_type_matcher_StringMatcher**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_matcher_StringMatcher* envoy_type_matcher_ListStringMatcher_add_patterns(envoy_type_matcher_ListStringMatcher *msg, upb_arena *arena) {
+  struct envoy_type_matcher_StringMatcher* sub = (struct envoy_type_matcher_StringMatcher*)upb_msg_new(&envoy_type_matcher_StringMatcher_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_MATCHER_STRING_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.c
new file mode 100644
index 0000000..7b2a02b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.c	
@@ -0,0 +1,111 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/metadata/v2/metadata.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h"
+#else
+  #include  "envoy/type/metadata/v2/metadata.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_type_metadata_v2_MetadataKey_submsgs[1] = {
+  &envoy_type_metadata_v2_MetadataKey_PathSegment_msginit,
+};
+
+static const upb_msglayout_field envoy_type_metadata_v2_MetadataKey__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 3},
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKey_msginit = {
+  &envoy_type_metadata_v2_MetadataKey_submsgs[0],
+  &envoy_type_metadata_v2_MetadataKey__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_type_metadata_v2_MetadataKey_PathSegment__fields[1] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKey_PathSegment_msginit = {
+  NULL,
+  &envoy_type_metadata_v2_MetadataKey_PathSegment__fields[0],
+  UPB_SIZE(16, 32), 1, false,
+};
+
+static const upb_msglayout *const envoy_type_metadata_v2_MetadataKind_submsgs[4] = {
+  &envoy_type_metadata_v2_MetadataKind_Cluster_msginit,
+  &envoy_type_metadata_v2_MetadataKind_Host_msginit,
+  &envoy_type_metadata_v2_MetadataKind_Request_msginit,
+  &envoy_type_metadata_v2_MetadataKind_Route_msginit,
+};
+
+static const upb_msglayout_field envoy_type_metadata_v2_MetadataKind__fields[4] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 3, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKind_msginit = {
+  &envoy_type_metadata_v2_MetadataKind_submsgs[0],
+  &envoy_type_metadata_v2_MetadataKind__fields[0],
+  UPB_SIZE(8, 16), 4, false,
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKind_Request_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKind_Route_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKind_Cluster_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+const upb_msglayout envoy_type_metadata_v2_MetadataKind_Host_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h
new file mode 100644
index 0000000..df64d1b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h	
@@ -0,0 +1,282 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/metadata/v2/metadata.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_
+#define ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_metadata_v2_MetadataKey;
+struct envoy_type_metadata_v2_MetadataKey_PathSegment;
+struct envoy_type_metadata_v2_MetadataKind;
+struct envoy_type_metadata_v2_MetadataKind_Request;
+struct envoy_type_metadata_v2_MetadataKind_Route;
+struct envoy_type_metadata_v2_MetadataKind_Cluster;
+struct envoy_type_metadata_v2_MetadataKind_Host;
+typedef struct envoy_type_metadata_v2_MetadataKey envoy_type_metadata_v2_MetadataKey;
+typedef struct envoy_type_metadata_v2_MetadataKey_PathSegment envoy_type_metadata_v2_MetadataKey_PathSegment;
+typedef struct envoy_type_metadata_v2_MetadataKind envoy_type_metadata_v2_MetadataKind;
+typedef struct envoy_type_metadata_v2_MetadataKind_Request envoy_type_metadata_v2_MetadataKind_Request;
+typedef struct envoy_type_metadata_v2_MetadataKind_Route envoy_type_metadata_v2_MetadataKind_Route;
+typedef struct envoy_type_metadata_v2_MetadataKind_Cluster envoy_type_metadata_v2_MetadataKind_Cluster;
+typedef struct envoy_type_metadata_v2_MetadataKind_Host envoy_type_metadata_v2_MetadataKind_Host;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_PathSegment_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Request_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Route_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Cluster_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_Host_msginit;
+
+
+/* envoy.type.metadata.v2.MetadataKey */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKey *envoy_type_metadata_v2_MetadataKey_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey *)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey *envoy_type_metadata_v2_MetadataKey_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKey *ret = envoy_type_metadata_v2_MetadataKey_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKey_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKey_serialize(const envoy_type_metadata_v2_MetadataKey *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKey_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_metadata_v2_MetadataKey_key(const envoy_type_metadata_v2_MetadataKey *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKey_PathSegment* const* envoy_type_metadata_v2_MetadataKey_path(const envoy_type_metadata_v2_MetadataKey *msg, size_t *len) { return (const envoy_type_metadata_v2_MetadataKey_PathSegment* const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKey_set_key(envoy_type_metadata_v2_MetadataKey *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment** envoy_type_metadata_v2_MetadataKey_mutable_path(envoy_type_metadata_v2_MetadataKey *msg, size_t *len) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment** envoy_type_metadata_v2_MetadataKey_resize_path(envoy_type_metadata_v2_MetadataKey *msg, size_t len, upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKey_PathSegment* envoy_type_metadata_v2_MetadataKey_add_path(envoy_type_metadata_v2_MetadataKey *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKey_PathSegment* sub = (struct envoy_type_metadata_v2_MetadataKey_PathSegment*)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* envoy.type.metadata.v2.MetadataKey.PathSegment */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment *envoy_type_metadata_v2_MetadataKey_PathSegment_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKey_PathSegment *)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment *envoy_type_metadata_v2_MetadataKey_PathSegment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKey_PathSegment *ret = envoy_type_metadata_v2_MetadataKey_PathSegment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKey_PathSegment_serialize(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKey_PathSegment_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_metadata_v2_MetadataKey_PathSegment_segment_key = 1,
+  envoy_type_metadata_v2_MetadataKey_PathSegment_segment_NOT_SET = 0
+} envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases;
+UPB_INLINE envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases envoy_type_metadata_v2_MetadataKey_PathSegment_segment_case(const envoy_type_metadata_v2_MetadataKey_PathSegment* msg) { return (envoy_type_metadata_v2_MetadataKey_PathSegment_segment_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKey_PathSegment_has_key(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE upb_strview envoy_type_metadata_v2_MetadataKey_PathSegment_key(const envoy_type_metadata_v2_MetadataKey_PathSegment *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, upb_strview_make("", strlen(""))); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKey_PathSegment_set_key(envoy_type_metadata_v2_MetadataKey_PathSegment *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+
+/* envoy.type.metadata.v2.MetadataKind */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind *envoy_type_metadata_v2_MetadataKind_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind *envoy_type_metadata_v2_MetadataKind_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind *ret = envoy_type_metadata_v2_MetadataKind_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_serialize(const envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_metadata_v2_MetadataKind_kind_request = 1,
+  envoy_type_metadata_v2_MetadataKind_kind_route = 2,
+  envoy_type_metadata_v2_MetadataKind_kind_cluster = 3,
+  envoy_type_metadata_v2_MetadataKind_kind_host = 4,
+  envoy_type_metadata_v2_MetadataKind_kind_NOT_SET = 0
+} envoy_type_metadata_v2_MetadataKind_kind_oneofcases;
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_kind_oneofcases envoy_type_metadata_v2_MetadataKind_kind_case(const envoy_type_metadata_v2_MetadataKind* msg) { return (envoy_type_metadata_v2_MetadataKind_kind_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_request(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Request* envoy_type_metadata_v2_MetadataKind_request(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Request*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_route(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Route* envoy_type_metadata_v2_MetadataKind_route(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Route*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_cluster(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Cluster* envoy_type_metadata_v2_MetadataKind_cluster(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Cluster*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+UPB_INLINE bool envoy_type_metadata_v2_MetadataKind_has_host(const envoy_type_metadata_v2_MetadataKind *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 4); }
+UPB_INLINE const envoy_type_metadata_v2_MetadataKind_Host* envoy_type_metadata_v2_MetadataKind_host(const envoy_type_metadata_v2_MetadataKind *msg) { return UPB_READ_ONEOF(msg, const envoy_type_metadata_v2_MetadataKind_Host*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 4, NULL); }
+
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_request(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Request* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Request*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Request* envoy_type_metadata_v2_MetadataKind_mutable_request(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Request* sub = (struct envoy_type_metadata_v2_MetadataKind_Request*)envoy_type_metadata_v2_MetadataKind_request(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Request*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Request_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_request(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_route(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Route* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Route*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Route* envoy_type_metadata_v2_MetadataKind_mutable_route(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Route* sub = (struct envoy_type_metadata_v2_MetadataKind_Route*)envoy_type_metadata_v2_MetadataKind_route(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Route*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Route_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_route(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_cluster(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Cluster* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Cluster*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Cluster* envoy_type_metadata_v2_MetadataKind_mutable_cluster(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Cluster* sub = (struct envoy_type_metadata_v2_MetadataKind_Cluster*)envoy_type_metadata_v2_MetadataKind_cluster(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Cluster*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_cluster(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_metadata_v2_MetadataKind_set_host(envoy_type_metadata_v2_MetadataKind *msg, envoy_type_metadata_v2_MetadataKind_Host* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_metadata_v2_MetadataKind_Host*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 4);
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind_Host* envoy_type_metadata_v2_MetadataKind_mutable_host(envoy_type_metadata_v2_MetadataKind *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind_Host* sub = (struct envoy_type_metadata_v2_MetadataKind_Host*)envoy_type_metadata_v2_MetadataKind_host(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind_Host*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Host_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_metadata_v2_MetadataKind_set_host(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.type.metadata.v2.MetadataKind.Request */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Request *envoy_type_metadata_v2_MetadataKind_Request_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Request *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Request_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Request *envoy_type_metadata_v2_MetadataKind_Request_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Request *ret = envoy_type_metadata_v2_MetadataKind_Request_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Request_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Request_serialize(const envoy_type_metadata_v2_MetadataKind_Request *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Request_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Route */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Route *envoy_type_metadata_v2_MetadataKind_Route_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Route *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Route_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Route *envoy_type_metadata_v2_MetadataKind_Route_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Route *ret = envoy_type_metadata_v2_MetadataKind_Route_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Route_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Route_serialize(const envoy_type_metadata_v2_MetadataKind_Route *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Route_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Cluster */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Cluster *envoy_type_metadata_v2_MetadataKind_Cluster_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Cluster *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Cluster *envoy_type_metadata_v2_MetadataKind_Cluster_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Cluster *ret = envoy_type_metadata_v2_MetadataKind_Cluster_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Cluster_serialize(const envoy_type_metadata_v2_MetadataKind_Cluster *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Cluster_msginit, arena, len);
+}
+
+
+
+/* envoy.type.metadata.v2.MetadataKind.Host */
+
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Host *envoy_type_metadata_v2_MetadataKind_Host_new(upb_arena *arena) {
+  return (envoy_type_metadata_v2_MetadataKind_Host *)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_Host_msginit, arena);
+}
+UPB_INLINE envoy_type_metadata_v2_MetadataKind_Host *envoy_type_metadata_v2_MetadataKind_Host_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_metadata_v2_MetadataKind_Host *ret = envoy_type_metadata_v2_MetadataKind_Host_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_metadata_v2_MetadataKind_Host_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_metadata_v2_MetadataKind_Host_serialize(const envoy_type_metadata_v2_MetadataKind_Host *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_metadata_v2_MetadataKind_Host_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_METADATA_V2_METADATA_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.c
new file mode 100644
index 0000000..8345fc3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.c	
@@ -0,0 +1,58 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/percent.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/percent.upb.h"
+#else
+  #include  "envoy/type/percent.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_type_Percent__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 1, 1},
+};
+
+const upb_msglayout envoy_type_Percent_msginit = {
+  NULL,
+  &envoy_type_Percent__fields[0],
+  UPB_SIZE(8, 8), 1, false,
+};
+
+static const upb_msglayout_field envoy_type_FractionalPercent__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 13, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout envoy_type_FractionalPercent_msginit = {
+  NULL,
+  &envoy_type_FractionalPercent__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.h
new file mode 100644
index 0000000..58d5788
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/percent.upb.h	
@@ -0,0 +1,111 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/percent.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_PERCENT_PROTO_UPB_H_
+#define ENVOY_TYPE_PERCENT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_Percent;
+struct envoy_type_FractionalPercent;
+typedef struct envoy_type_Percent envoy_type_Percent;
+typedef struct envoy_type_FractionalPercent envoy_type_FractionalPercent;
+extern const upb_msglayout envoy_type_Percent_msginit;
+extern const upb_msglayout envoy_type_FractionalPercent_msginit;
+
+typedef enum {
+  envoy_type_FractionalPercent_HUNDRED = 0,
+  envoy_type_FractionalPercent_TEN_THOUSAND = 1,
+  envoy_type_FractionalPercent_MILLION = 2
+} envoy_type_FractionalPercent_DenominatorType;
+
+
+/* envoy.type.Percent */
+
+UPB_INLINE envoy_type_Percent *envoy_type_Percent_new(upb_arena *arena) {
+  return (envoy_type_Percent *)upb_msg_new(&envoy_type_Percent_msginit, arena);
+}
+UPB_INLINE envoy_type_Percent *envoy_type_Percent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Percent *ret = envoy_type_Percent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Percent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Percent_serialize(const envoy_type_Percent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Percent_msginit, arena, len);
+}
+
+UPB_INLINE double envoy_type_Percent_value(const envoy_type_Percent *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_Percent_set_value(envoy_type_Percent *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.FractionalPercent */
+
+UPB_INLINE envoy_type_FractionalPercent *envoy_type_FractionalPercent_new(upb_arena *arena) {
+  return (envoy_type_FractionalPercent *)upb_msg_new(&envoy_type_FractionalPercent_msginit, arena);
+}
+UPB_INLINE envoy_type_FractionalPercent *envoy_type_FractionalPercent_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_FractionalPercent *ret = envoy_type_FractionalPercent_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_FractionalPercent_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_FractionalPercent_serialize(const envoy_type_FractionalPercent *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_FractionalPercent_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_type_FractionalPercent_numerator(const envoy_type_FractionalPercent *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t envoy_type_FractionalPercent_denominator(const envoy_type_FractionalPercent *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_FractionalPercent_set_numerator(envoy_type_FractionalPercent *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void envoy_type_FractionalPercent_set_denominator(envoy_type_FractionalPercent *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_PERCENT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.c
new file mode 100644
index 0000000..b6297e8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.c	
@@ -0,0 +1,65 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/range.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/range.upb.h"
+#else
+  #include  "envoy/type/range.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_type_Int64Range__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 3, 1},
+};
+
+const upb_msglayout envoy_type_Int64Range_msginit = {
+  NULL,
+  &envoy_type_Int64Range__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+static const upb_msglayout_field envoy_type_Int32Range__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 5, 1},
+  {2, UPB_SIZE(4, 4), 0, 0, 5, 1},
+};
+
+const upb_msglayout envoy_type_Int32Range_msginit = {
+  NULL,
+  &envoy_type_Int32Range__fields[0],
+  UPB_SIZE(8, 8), 2, false,
+};
+
+static const upb_msglayout_field envoy_type_DoubleRange__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 1, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 1, 1},
+};
+
+const upb_msglayout envoy_type_DoubleRange_msginit = {
+  NULL,
+  &envoy_type_DoubleRange__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.h
new file mode 100644
index 0000000..ccd7256
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/range.upb.h	
@@ -0,0 +1,136 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/range.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_RANGE_PROTO_UPB_H_
+#define ENVOY_TYPE_RANGE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_Int64Range;
+struct envoy_type_Int32Range;
+struct envoy_type_DoubleRange;
+typedef struct envoy_type_Int64Range envoy_type_Int64Range;
+typedef struct envoy_type_Int32Range envoy_type_Int32Range;
+typedef struct envoy_type_DoubleRange envoy_type_DoubleRange;
+extern const upb_msglayout envoy_type_Int64Range_msginit;
+extern const upb_msglayout envoy_type_Int32Range_msginit;
+extern const upb_msglayout envoy_type_DoubleRange_msginit;
+
+
+/* envoy.type.Int64Range */
+
+UPB_INLINE envoy_type_Int64Range *envoy_type_Int64Range_new(upb_arena *arena) {
+  return (envoy_type_Int64Range *)upb_msg_new(&envoy_type_Int64Range_msginit, arena);
+}
+UPB_INLINE envoy_type_Int64Range *envoy_type_Int64Range_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Int64Range *ret = envoy_type_Int64Range_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Int64Range_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Int64Range_serialize(const envoy_type_Int64Range *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Int64Range_msginit, arena, len);
+}
+
+UPB_INLINE int64_t envoy_type_Int64Range_start(const envoy_type_Int64Range *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t envoy_type_Int64Range_end(const envoy_type_Int64Range *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_Int64Range_set_start(envoy_type_Int64Range *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_Int64Range_set_end(envoy_type_Int64Range *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* envoy.type.Int32Range */
+
+UPB_INLINE envoy_type_Int32Range *envoy_type_Int32Range_new(upb_arena *arena) {
+  return (envoy_type_Int32Range *)upb_msg_new(&envoy_type_Int32Range_msginit, arena);
+}
+UPB_INLINE envoy_type_Int32Range *envoy_type_Int32Range_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_Int32Range *ret = envoy_type_Int32Range_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_Int32Range_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_Int32Range_serialize(const envoy_type_Int32Range *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_Int32Range_msginit, arena, len);
+}
+
+UPB_INLINE int32_t envoy_type_Int32Range_start(const envoy_type_Int32Range *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t envoy_type_Int32Range_end(const envoy_type_Int32Range *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void envoy_type_Int32Range_set_start(envoy_type_Int32Range *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_Int32Range_set_end(envoy_type_Int32Range *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+
+/* envoy.type.DoubleRange */
+
+UPB_INLINE envoy_type_DoubleRange *envoy_type_DoubleRange_new(upb_arena *arena) {
+  return (envoy_type_DoubleRange *)upb_msg_new(&envoy_type_DoubleRange_msginit, arena);
+}
+UPB_INLINE envoy_type_DoubleRange *envoy_type_DoubleRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_DoubleRange *ret = envoy_type_DoubleRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_DoubleRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_DoubleRange_serialize(const envoy_type_DoubleRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_DoubleRange_msginit, arena, len);
+}
+
+UPB_INLINE double envoy_type_DoubleRange_start(const envoy_type_DoubleRange *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+UPB_INLINE double envoy_type_DoubleRange_end(const envoy_type_DoubleRange *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_DoubleRange_set_start(envoy_type_DoubleRange *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_DoubleRange_set_end(envoy_type_DoubleRange *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_RANGE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.c
new file mode 100644
index 0000000..c6310f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.c	
@@ -0,0 +1,44 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/semantic_version.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/semantic_version.upb.h"
+#else
+  #include  "envoy/type/semantic_version.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field envoy_type_SemanticVersion__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {2, UPB_SIZE(4, 4), 0, 0, 13, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 13, 1},
+};
+
+const upb_msglayout envoy_type_SemanticVersion_msginit = {
+  NULL,
+  &envoy_type_SemanticVersion__fields[0],
+  UPB_SIZE(12, 12), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h
new file mode 100644
index 0000000..5ab842e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/semantic_version.upb.h	
@@ -0,0 +1,86 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/semantic_version.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_
+#define ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_SemanticVersion;
+typedef struct envoy_type_SemanticVersion envoy_type_SemanticVersion;
+extern const upb_msglayout envoy_type_SemanticVersion_msginit;
+
+
+/* envoy.type.SemanticVersion */
+
+UPB_INLINE envoy_type_SemanticVersion *envoy_type_SemanticVersion_new(upb_arena *arena) {
+  return (envoy_type_SemanticVersion *)upb_msg_new(&envoy_type_SemanticVersion_msginit, arena);
+}
+UPB_INLINE envoy_type_SemanticVersion *envoy_type_SemanticVersion_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_SemanticVersion *ret = envoy_type_SemanticVersion_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_SemanticVersion_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_SemanticVersion_serialize(const envoy_type_SemanticVersion *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_SemanticVersion_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t envoy_type_SemanticVersion_major_number(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t envoy_type_SemanticVersion_minor_number(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE uint32_t envoy_type_SemanticVersion_patch(const envoy_type_SemanticVersion *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void envoy_type_SemanticVersion_set_major_number(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_SemanticVersion_set_minor_number(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void envoy_type_SemanticVersion_set_patch(envoy_type_SemanticVersion *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_SEMANTIC_VERSION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.c
new file mode 100644
index 0000000..d03f7bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.c	
@@ -0,0 +1,112 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/tracing/v2/custom_tag.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h"
+#else
+  #include  "envoy/type/tracing/v2/custom_tag.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/envoy/type/metadata/v2/metadata.upb.h"
+#else
+  #include  "envoy/type/metadata/v2/metadata.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const envoy_type_tracing_v2_CustomTag_submsgs[4] = {
+  &envoy_type_tracing_v2_CustomTag_Environment_msginit,
+  &envoy_type_tracing_v2_CustomTag_Header_msginit,
+  &envoy_type_tracing_v2_CustomTag_Literal_msginit,
+  &envoy_type_tracing_v2_CustomTag_Metadata_msginit,
+};
+
+static const upb_msglayout_field envoy_type_tracing_v2_CustomTag__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 2, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+  {4, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {5, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 3, 11, 1},
+};
+
+const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit = {
+  &envoy_type_tracing_v2_CustomTag_submsgs[0],
+  &envoy_type_tracing_v2_CustomTag__fields[0],
+  UPB_SIZE(16, 32), 5, false,
+};
+
+static const upb_msglayout_field envoy_type_tracing_v2_CustomTag_Literal__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_tracing_v2_CustomTag_Literal_msginit = {
+  NULL,
+  &envoy_type_tracing_v2_CustomTag_Literal__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field envoy_type_tracing_v2_CustomTag_Environment__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_tracing_v2_CustomTag_Environment_msginit = {
+  NULL,
+  &envoy_type_tracing_v2_CustomTag_Environment__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field envoy_type_tracing_v2_CustomTag_Header__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_tracing_v2_CustomTag_Header_msginit = {
+  NULL,
+  &envoy_type_tracing_v2_CustomTag_Header__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const envoy_type_tracing_v2_CustomTag_Metadata_submsgs[2] = {
+  &envoy_type_metadata_v2_MetadataKey_msginit,
+  &envoy_type_metadata_v2_MetadataKind_msginit,
+};
+
+static const upb_msglayout_field envoy_type_tracing_v2_CustomTag_Metadata__fields[3] = {
+  {1, UPB_SIZE(8, 16), 0, 1, 11, 1},
+  {2, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout envoy_type_tracing_v2_CustomTag_Metadata_msginit = {
+  &envoy_type_tracing_v2_CustomTag_Metadata_submsgs[0],
+  &envoy_type_tracing_v2_CustomTag_Metadata__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h
new file mode 100644
index 0000000..a4f642d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/envoy/type/tracing/v2/custom_tag.upb.h	
@@ -0,0 +1,273 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     envoy/type/tracing/v2/custom_tag.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_
+#define ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct envoy_type_tracing_v2_CustomTag;
+struct envoy_type_tracing_v2_CustomTag_Literal;
+struct envoy_type_tracing_v2_CustomTag_Environment;
+struct envoy_type_tracing_v2_CustomTag_Header;
+struct envoy_type_tracing_v2_CustomTag_Metadata;
+typedef struct envoy_type_tracing_v2_CustomTag envoy_type_tracing_v2_CustomTag;
+typedef struct envoy_type_tracing_v2_CustomTag_Literal envoy_type_tracing_v2_CustomTag_Literal;
+typedef struct envoy_type_tracing_v2_CustomTag_Environment envoy_type_tracing_v2_CustomTag_Environment;
+typedef struct envoy_type_tracing_v2_CustomTag_Header envoy_type_tracing_v2_CustomTag_Header;
+typedef struct envoy_type_tracing_v2_CustomTag_Metadata envoy_type_tracing_v2_CustomTag_Metadata;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Literal_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Environment_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Header_msginit;
+extern const upb_msglayout envoy_type_tracing_v2_CustomTag_Metadata_msginit;
+struct envoy_type_metadata_v2_MetadataKey;
+struct envoy_type_metadata_v2_MetadataKind;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKey_msginit;
+extern const upb_msglayout envoy_type_metadata_v2_MetadataKind_msginit;
+
+
+/* envoy.type.tracing.v2.CustomTag */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag *envoy_type_tracing_v2_CustomTag_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag *envoy_type_tracing_v2_CustomTag_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag *ret = envoy_type_tracing_v2_CustomTag_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_serialize(const envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_msginit, arena, len);
+}
+
+typedef enum {
+  envoy_type_tracing_v2_CustomTag_type_literal = 2,
+  envoy_type_tracing_v2_CustomTag_type_environment = 3,
+  envoy_type_tracing_v2_CustomTag_type_request_header = 4,
+  envoy_type_tracing_v2_CustomTag_type_metadata = 5,
+  envoy_type_tracing_v2_CustomTag_type_NOT_SET = 0
+} envoy_type_tracing_v2_CustomTag_type_oneofcases;
+UPB_INLINE envoy_type_tracing_v2_CustomTag_type_oneofcases envoy_type_tracing_v2_CustomTag_type_case(const envoy_type_tracing_v2_CustomTag* msg) { return (envoy_type_tracing_v2_CustomTag_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_tag(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_literal(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Literal* envoy_type_tracing_v2_CustomTag_literal(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Literal*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_environment(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Environment* envoy_type_tracing_v2_CustomTag_environment(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Environment*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_request_header(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Header* envoy_type_tracing_v2_CustomTag_request_header(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Header*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool envoy_type_tracing_v2_CustomTag_has_metadata(const envoy_type_tracing_v2_CustomTag *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const envoy_type_tracing_v2_CustomTag_Metadata* envoy_type_tracing_v2_CustomTag_metadata(const envoy_type_tracing_v2_CustomTag *msg) { return UPB_READ_ONEOF(msg, const envoy_type_tracing_v2_CustomTag_Metadata*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_tag(envoy_type_tracing_v2_CustomTag *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_literal(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Literal* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Literal*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Literal* envoy_type_tracing_v2_CustomTag_mutable_literal(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Literal* sub = (struct envoy_type_tracing_v2_CustomTag_Literal*)envoy_type_tracing_v2_CustomTag_literal(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Literal*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Literal_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_literal(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_environment(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Environment* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Environment*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Environment* envoy_type_tracing_v2_CustomTag_mutable_environment(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Environment* sub = (struct envoy_type_tracing_v2_CustomTag_Environment*)envoy_type_tracing_v2_CustomTag_environment(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Environment*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Environment_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_environment(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_request_header(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Header* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Header*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Header* envoy_type_tracing_v2_CustomTag_mutable_request_header(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Header* sub = (struct envoy_type_tracing_v2_CustomTag_Header*)envoy_type_tracing_v2_CustomTag_request_header(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Header*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Header_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_request_header(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_set_metadata(envoy_type_tracing_v2_CustomTag *msg, envoy_type_tracing_v2_CustomTag_Metadata* value) {
+  UPB_WRITE_ONEOF(msg, envoy_type_tracing_v2_CustomTag_Metadata*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct envoy_type_tracing_v2_CustomTag_Metadata* envoy_type_tracing_v2_CustomTag_mutable_metadata(envoy_type_tracing_v2_CustomTag *msg, upb_arena *arena) {
+  struct envoy_type_tracing_v2_CustomTag_Metadata* sub = (struct envoy_type_tracing_v2_CustomTag_Metadata*)envoy_type_tracing_v2_CustomTag_metadata(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_tracing_v2_CustomTag_Metadata*)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_set_metadata(msg, sub);
+  }
+  return sub;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Literal */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Literal *envoy_type_tracing_v2_CustomTag_Literal_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Literal *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Literal_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Literal *envoy_type_tracing_v2_CustomTag_Literal_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Literal *ret = envoy_type_tracing_v2_CustomTag_Literal_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Literal_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Literal_serialize(const envoy_type_tracing_v2_CustomTag_Literal *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Literal_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Literal_value(const envoy_type_tracing_v2_CustomTag_Literal *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Literal_set_value(envoy_type_tracing_v2_CustomTag_Literal *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Environment */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Environment *envoy_type_tracing_v2_CustomTag_Environment_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Environment *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Environment_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Environment *envoy_type_tracing_v2_CustomTag_Environment_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Environment *ret = envoy_type_tracing_v2_CustomTag_Environment_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Environment_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Environment_serialize(const envoy_type_tracing_v2_CustomTag_Environment *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Environment_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Environment_name(const envoy_type_tracing_v2_CustomTag_Environment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Environment_default_value(const envoy_type_tracing_v2_CustomTag_Environment *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Environment_set_name(envoy_type_tracing_v2_CustomTag_Environment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Environment_set_default_value(envoy_type_tracing_v2_CustomTag_Environment *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Header */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Header *envoy_type_tracing_v2_CustomTag_Header_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Header *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Header_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Header *envoy_type_tracing_v2_CustomTag_Header_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Header *ret = envoy_type_tracing_v2_CustomTag_Header_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Header_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Header_serialize(const envoy_type_tracing_v2_CustomTag_Header *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Header_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Header_name(const envoy_type_tracing_v2_CustomTag_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Header_default_value(const envoy_type_tracing_v2_CustomTag_Header *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Header_set_name(envoy_type_tracing_v2_CustomTag_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Header_set_default_value(envoy_type_tracing_v2_CustomTag_Header *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* envoy.type.tracing.v2.CustomTag.Metadata */
+
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Metadata *envoy_type_tracing_v2_CustomTag_Metadata_new(upb_arena *arena) {
+  return (envoy_type_tracing_v2_CustomTag_Metadata *)upb_msg_new(&envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena);
+}
+UPB_INLINE envoy_type_tracing_v2_CustomTag_Metadata *envoy_type_tracing_v2_CustomTag_Metadata_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  envoy_type_tracing_v2_CustomTag_Metadata *ret = envoy_type_tracing_v2_CustomTag_Metadata_new(arena);
+  return (ret && upb_decode(buf, size, ret, &envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *envoy_type_tracing_v2_CustomTag_Metadata_serialize(const envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &envoy_type_tracing_v2_CustomTag_Metadata_msginit, arena, len);
+}
+
+UPB_INLINE const struct envoy_type_metadata_v2_MetadataKind* envoy_type_tracing_v2_CustomTag_Metadata_kind(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_metadata_v2_MetadataKind*, UPB_SIZE(8, 16)); }
+UPB_INLINE const struct envoy_type_metadata_v2_MetadataKey* envoy_type_tracing_v2_CustomTag_Metadata_metadata_key(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, const struct envoy_type_metadata_v2_MetadataKey*, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview envoy_type_tracing_v2_CustomTag_Metadata_default_value(const envoy_type_tracing_v2_CustomTag_Metadata *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_kind(envoy_type_tracing_v2_CustomTag_Metadata *msg, struct envoy_type_metadata_v2_MetadataKind* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_metadata_v2_MetadataKind*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKind* envoy_type_tracing_v2_CustomTag_Metadata_mutable_kind(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKind* sub = (struct envoy_type_metadata_v2_MetadataKind*)envoy_type_tracing_v2_CustomTag_Metadata_kind(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKind*)upb_msg_new(&envoy_type_metadata_v2_MetadataKind_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_Metadata_set_kind(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_metadata_key(envoy_type_tracing_v2_CustomTag_Metadata *msg, struct envoy_type_metadata_v2_MetadataKey* value) {
+  UPB_FIELD_AT(msg, struct envoy_type_metadata_v2_MetadataKey*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct envoy_type_metadata_v2_MetadataKey* envoy_type_tracing_v2_CustomTag_Metadata_mutable_metadata_key(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_arena *arena) {
+  struct envoy_type_metadata_v2_MetadataKey* sub = (struct envoy_type_metadata_v2_MetadataKey*)envoy_type_tracing_v2_CustomTag_Metadata_metadata_key(msg);
+  if (sub == NULL) {
+    sub = (struct envoy_type_metadata_v2_MetadataKey*)upb_msg_new(&envoy_type_metadata_v2_MetadataKey_msginit, arena);
+    if (!sub) return NULL;
+    envoy_type_tracing_v2_CustomTag_Metadata_set_metadata_key(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void envoy_type_tracing_v2_CustomTag_Metadata_set_default_value(envoy_type_tracing_v2_CustomTag_Metadata *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* ENVOY_TYPE_TRACING_V2_CUSTOM_TAG_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.c
new file mode 100644
index 0000000..8e31168
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     gogoproto/gogo.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/gogoproto/gogo.upb.h"
+#else
+  #include  "gogoproto/gogo.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.h
new file mode 100644
index 0000000..ae58343
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/gogoproto/gogo.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     gogoproto/gogo.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOGOPROTO_GOGO_PROTO_UPB_H_
+#define GOGOPROTO_GOGO_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOGOPROTO_GOGO_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.c
new file mode 100644
index 0000000..b2ea6af
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.c	
@@ -0,0 +1,42 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/annotations.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/annotations.upb.h"
+#else
+  #include  "google/api/annotations.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/http.upb.h"
+#else
+  #include  "google/api/http.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.h
new file mode 100644
index 0000000..cf2abb6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/annotations.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/annotations.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_
+#define GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_API_ANNOTATIONS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.c
new file mode 100644
index 0000000..edbb1e0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.c	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/api/http.upb.h"
+#else
+  #include  "google/api/http.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const google_api_Http_submsgs[1] = {
+  &google_api_HttpRule_msginit,
+};
+
+static const upb_msglayout_field google_api_Http__fields[2] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 11, 3},
+  {2, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout google_api_Http_msginit = {
+  &google_api_Http_submsgs[0],
+  &google_api_Http__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const google_api_HttpRule_submsgs[2] = {
+  &google_api_CustomHttpPattern_msginit,
+  &google_api_HttpRule_msginit,
+};
+
+static const upb_msglayout_field google_api_HttpRule__fields[10] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 9, 1},
+  {3, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 9, 1},
+  {4, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 9, 1},
+  {5, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 9, 1},
+  {6, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 9, 1},
+  {7, UPB_SIZE(8, 16), 0, 0, 9, 1},
+  {8, UPB_SIZE(28, 56), UPB_SIZE(-37, -73), 0, 11, 1},
+  {11, UPB_SIZE(24, 48), 0, 1, 11, 3},
+  {12, UPB_SIZE(16, 32), 0, 0, 9, 1},
+};
+
+const upb_msglayout google_api_HttpRule_msginit = {
+  &google_api_HttpRule_submsgs[0],
+  &google_api_HttpRule__fields[0],
+  UPB_SIZE(40, 80), 10, false,
+};
+
+static const upb_msglayout_field google_api_CustomHttpPattern__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout google_api_CustomHttpPattern_msginit = {
+  NULL,
+  &google_api_CustomHttpPattern__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.h
new file mode 100644
index 0000000..f654409
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/api/http.upb.h	
@@ -0,0 +1,214 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/api/http.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_API_HTTP_PROTO_UPB_H_
+#define GOOGLE_API_HTTP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_api_Http;
+struct google_api_HttpRule;
+struct google_api_CustomHttpPattern;
+typedef struct google_api_Http google_api_Http;
+typedef struct google_api_HttpRule google_api_HttpRule;
+typedef struct google_api_CustomHttpPattern google_api_CustomHttpPattern;
+extern const upb_msglayout google_api_Http_msginit;
+extern const upb_msglayout google_api_HttpRule_msginit;
+extern const upb_msglayout google_api_CustomHttpPattern_msginit;
+
+
+/* google.api.Http */
+
+UPB_INLINE google_api_Http *google_api_Http_new(upb_arena *arena) {
+  return (google_api_Http *)upb_msg_new(&google_api_Http_msginit, arena);
+}
+UPB_INLINE google_api_Http *google_api_Http_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_Http *ret = google_api_Http_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_Http_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_Http_serialize(const google_api_Http *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_Http_msginit, arena, len);
+}
+
+UPB_INLINE const google_api_HttpRule* const* google_api_Http_rules(const google_api_Http *msg, size_t *len) { return (const google_api_HttpRule* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE bool google_api_Http_fully_decode_reserved_expansion(const google_api_Http *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE google_api_HttpRule** google_api_Http_mutable_rules(google_api_Http *msg, size_t *len) {
+  return (google_api_HttpRule**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_api_HttpRule** google_api_Http_resize_rules(google_api_Http *msg, size_t len, upb_arena *arena) {
+  return (google_api_HttpRule**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_api_HttpRule* google_api_Http_add_rules(google_api_Http *msg, upb_arena *arena) {
+  struct google_api_HttpRule* sub = (struct google_api_HttpRule*)upb_msg_new(&google_api_HttpRule_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_api_Http_set_fully_decode_reserved_expansion(google_api_Http *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.api.HttpRule */
+
+UPB_INLINE google_api_HttpRule *google_api_HttpRule_new(upb_arena *arena) {
+  return (google_api_HttpRule *)upb_msg_new(&google_api_HttpRule_msginit, arena);
+}
+UPB_INLINE google_api_HttpRule *google_api_HttpRule_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_HttpRule *ret = google_api_HttpRule_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_HttpRule_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_HttpRule_serialize(const google_api_HttpRule *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_HttpRule_msginit, arena, len);
+}
+
+typedef enum {
+  google_api_HttpRule_pattern_get = 2,
+  google_api_HttpRule_pattern_put = 3,
+  google_api_HttpRule_pattern_post = 4,
+  google_api_HttpRule_pattern_delete = 5,
+  google_api_HttpRule_pattern_patch = 6,
+  google_api_HttpRule_pattern_custom = 8,
+  google_api_HttpRule_pattern_NOT_SET = 0
+} google_api_HttpRule_pattern_oneofcases;
+UPB_INLINE google_api_HttpRule_pattern_oneofcases google_api_HttpRule_pattern_case(const google_api_HttpRule* msg) { return (google_api_HttpRule_pattern_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(36, 72)); }
+
+UPB_INLINE upb_strview google_api_HttpRule_selector(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE bool google_api_HttpRule_has_get(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 2); }
+UPB_INLINE upb_strview google_api_HttpRule_get(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_put(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 3); }
+UPB_INLINE upb_strview google_api_HttpRule_put(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_post(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 4); }
+UPB_INLINE upb_strview google_api_HttpRule_post(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 4, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_delete(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 5); }
+UPB_INLINE upb_strview google_api_HttpRule_delete(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 5, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_api_HttpRule_has_patch(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 6); }
+UPB_INLINE upb_strview google_api_HttpRule_patch(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 6, upb_strview_make("", strlen(""))); }
+UPB_INLINE upb_strview google_api_HttpRule_body(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+UPB_INLINE bool google_api_HttpRule_has_custom(const google_api_HttpRule *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(36, 72), 8); }
+UPB_INLINE const google_api_CustomHttpPattern* google_api_HttpRule_custom(const google_api_HttpRule *msg) { return UPB_READ_ONEOF(msg, const google_api_CustomHttpPattern*, UPB_SIZE(28, 56), UPB_SIZE(36, 72), 8, NULL); }
+UPB_INLINE const google_api_HttpRule* const* google_api_HttpRule_additional_bindings(const google_api_HttpRule *msg, size_t *len) { return (const google_api_HttpRule* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE upb_strview google_api_HttpRule_response_body(const google_api_HttpRule *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void google_api_HttpRule_set_selector(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_api_HttpRule_set_get(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 2);
+}
+UPB_INLINE void google_api_HttpRule_set_put(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 3);
+}
+UPB_INLINE void google_api_HttpRule_set_post(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 4);
+}
+UPB_INLINE void google_api_HttpRule_set_delete(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 5);
+}
+UPB_INLINE void google_api_HttpRule_set_patch(google_api_HttpRule *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 6);
+}
+UPB_INLINE void google_api_HttpRule_set_body(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE void google_api_HttpRule_set_custom(google_api_HttpRule *msg, google_api_CustomHttpPattern* value) {
+  UPB_WRITE_ONEOF(msg, google_api_CustomHttpPattern*, UPB_SIZE(28, 56), value, UPB_SIZE(36, 72), 8);
+}
+UPB_INLINE struct google_api_CustomHttpPattern* google_api_HttpRule_mutable_custom(google_api_HttpRule *msg, upb_arena *arena) {
+  struct google_api_CustomHttpPattern* sub = (struct google_api_CustomHttpPattern*)google_api_HttpRule_custom(msg);
+  if (sub == NULL) {
+    sub = (struct google_api_CustomHttpPattern*)upb_msg_new(&google_api_CustomHttpPattern_msginit, arena);
+    if (!sub) return NULL;
+    google_api_HttpRule_set_custom(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_api_HttpRule** google_api_HttpRule_mutable_additional_bindings(google_api_HttpRule *msg, size_t *len) {
+  return (google_api_HttpRule**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE google_api_HttpRule** google_api_HttpRule_resize_additional_bindings(google_api_HttpRule *msg, size_t len, upb_arena *arena) {
+  return (google_api_HttpRule**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_api_HttpRule* google_api_HttpRule_add_additional_bindings(google_api_HttpRule *msg, upb_arena *arena) {
+  struct google_api_HttpRule* sub = (struct google_api_HttpRule*)upb_msg_new(&google_api_HttpRule_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_api_HttpRule_set_response_body(google_api_HttpRule *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 32)) = value;
+}
+
+/* google.api.CustomHttpPattern */
+
+UPB_INLINE google_api_CustomHttpPattern *google_api_CustomHttpPattern_new(upb_arena *arena) {
+  return (google_api_CustomHttpPattern *)upb_msg_new(&google_api_CustomHttpPattern_msginit, arena);
+}
+UPB_INLINE google_api_CustomHttpPattern *google_api_CustomHttpPattern_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_api_CustomHttpPattern *ret = google_api_CustomHttpPattern_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_api_CustomHttpPattern_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_api_CustomHttpPattern_serialize(const google_api_CustomHttpPattern *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_api_CustomHttpPattern_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_api_CustomHttpPattern_kind(const google_api_CustomHttpPattern *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_api_CustomHttpPattern_path(const google_api_CustomHttpPattern *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_api_CustomHttpPattern_set_kind(google_api_CustomHttpPattern *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_api_CustomHttpPattern_set_path(google_api_CustomHttpPattern *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_API_HTTP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.c
new file mode 100644
index 0000000..8653f6f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.c	
@@ -0,0 +1,43 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/any.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field google_protobuf_Any__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 12, 1},
+};
+
+const upb_msglayout google_protobuf_Any_msginit = {
+  NULL,
+  &google_protobuf_Any__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.h
new file mode 100644
index 0000000..4a8c34c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/any.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/any.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Any;
+typedef struct google_protobuf_Any google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* google.protobuf.Any */
+
+UPB_INLINE google_protobuf_Any *google_protobuf_Any_new(upb_arena *arena) {
+  return (google_protobuf_Any *)upb_msg_new(&google_protobuf_Any_msginit, arena);
+}
+UPB_INLINE google_protobuf_Any *google_protobuf_Any_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Any *ret = google_protobuf_Any_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Any_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Any_serialize(const google_protobuf_Any *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Any_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_Any_type_url(const google_protobuf_Any *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_protobuf_Any_value(const google_protobuf_Any *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_protobuf_Any_set_type_url(google_protobuf_Any *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Any_set_value(google_protobuf_Any *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_ANY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.c
new file mode 100644
index 0000000..6c33aa6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.c	
@@ -0,0 +1,501 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/descriptor.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const google_protobuf_FileDescriptorSet_submsgs[1] = {
+  &google_protobuf_FileDescriptorProto_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_FileDescriptorSet__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_FileDescriptorSet_msginit = {
+  &google_protobuf_FileDescriptorSet_submsgs[0],
+  &google_protobuf_FileDescriptorSet__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const google_protobuf_FileDescriptorProto_submsgs[6] = {
+  &google_protobuf_DescriptorProto_msginit,
+  &google_protobuf_EnumDescriptorProto_msginit,
+  &google_protobuf_FieldDescriptorProto_msginit,
+  &google_protobuf_FileOptions_msginit,
+  &google_protobuf_ServiceDescriptorProto_msginit,
+  &google_protobuf_SourceCodeInfo_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_FileDescriptorProto__fields[12] = {
+  {1, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 2, 0, 9, 1},
+  {3, UPB_SIZE(36, 72), 0, 0, 9, 3},
+  {4, UPB_SIZE(40, 80), 0, 0, 11, 3},
+  {5, UPB_SIZE(44, 88), 0, 1, 11, 3},
+  {6, UPB_SIZE(48, 96), 0, 4, 11, 3},
+  {7, UPB_SIZE(52, 104), 0, 2, 11, 3},
+  {8, UPB_SIZE(28, 56), 4, 3, 11, 1},
+  {9, UPB_SIZE(32, 64), 5, 5, 11, 1},
+  {10, UPB_SIZE(56, 112), 0, 0, 5, 3},
+  {11, UPB_SIZE(60, 120), 0, 0, 5, 3},
+  {12, UPB_SIZE(20, 40), 3, 0, 9, 1},
+};
+
+const upb_msglayout google_protobuf_FileDescriptorProto_msginit = {
+  &google_protobuf_FileDescriptorProto_submsgs[0],
+  &google_protobuf_FileDescriptorProto__fields[0],
+  UPB_SIZE(64, 128), 12, false,
+};
+
+static const upb_msglayout *const google_protobuf_DescriptorProto_submsgs[8] = {
+  &google_protobuf_DescriptorProto_msginit,
+  &google_protobuf_DescriptorProto_ExtensionRange_msginit,
+  &google_protobuf_DescriptorProto_ReservedRange_msginit,
+  &google_protobuf_EnumDescriptorProto_msginit,
+  &google_protobuf_FieldDescriptorProto_msginit,
+  &google_protobuf_MessageOptions_msginit,
+  &google_protobuf_OneofDescriptorProto_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_DescriptorProto__fields[10] = {
+  {1, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {2, UPB_SIZE(16, 32), 0, 4, 11, 3},
+  {3, UPB_SIZE(20, 40), 0, 0, 11, 3},
+  {4, UPB_SIZE(24, 48), 0, 3, 11, 3},
+  {5, UPB_SIZE(28, 56), 0, 1, 11, 3},
+  {6, UPB_SIZE(32, 64), 0, 4, 11, 3},
+  {7, UPB_SIZE(12, 24), 2, 5, 11, 1},
+  {8, UPB_SIZE(36, 72), 0, 6, 11, 3},
+  {9, UPB_SIZE(40, 80), 0, 2, 11, 3},
+  {10, UPB_SIZE(44, 88), 0, 0, 9, 3},
+};
+
+const upb_msglayout google_protobuf_DescriptorProto_msginit = {
+  &google_protobuf_DescriptorProto_submsgs[0],
+  &google_protobuf_DescriptorProto__fields[0],
+  UPB_SIZE(48, 96), 10, false,
+};
+
+static const upb_msglayout *const google_protobuf_DescriptorProto_ExtensionRange_submsgs[1] = {
+  &google_protobuf_ExtensionRangeOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_DescriptorProto_ExtensionRange__fields[3] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 5, 1},
+  {3, UPB_SIZE(12, 16), 3, 0, 11, 1},
+};
+
+const upb_msglayout google_protobuf_DescriptorProto_ExtensionRange_msginit = {
+  &google_protobuf_DescriptorProto_ExtensionRange_submsgs[0],
+  &google_protobuf_DescriptorProto_ExtensionRange__fields[0],
+  UPB_SIZE(16, 24), 3, false,
+};
+
+static const upb_msglayout_field google_protobuf_DescriptorProto_ReservedRange__fields[2] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_DescriptorProto_ReservedRange_msginit = {
+  NULL,
+  &google_protobuf_DescriptorProto_ReservedRange__fields[0],
+  UPB_SIZE(12, 12), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_ExtensionRangeOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_ExtensionRangeOptions__fields[1] = {
+  {999, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_ExtensionRangeOptions_msginit = {
+  &google_protobuf_ExtensionRangeOptions_submsgs[0],
+  &google_protobuf_ExtensionRangeOptions__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const google_protobuf_FieldDescriptorProto_submsgs[1] = {
+  &google_protobuf_FieldOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_FieldDescriptorProto__fields[10] = {
+  {1, UPB_SIZE(32, 32), 5, 0, 9, 1},
+  {2, UPB_SIZE(40, 48), 6, 0, 9, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 5, 1},
+  {4, UPB_SIZE(8, 8), 1, 0, 14, 1},
+  {5, UPB_SIZE(16, 16), 2, 0, 14, 1},
+  {6, UPB_SIZE(48, 64), 7, 0, 9, 1},
+  {7, UPB_SIZE(56, 80), 8, 0, 9, 1},
+  {8, UPB_SIZE(72, 112), 10, 0, 11, 1},
+  {9, UPB_SIZE(28, 28), 4, 0, 5, 1},
+  {10, UPB_SIZE(64, 96), 9, 0, 9, 1},
+};
+
+const upb_msglayout google_protobuf_FieldDescriptorProto_msginit = {
+  &google_protobuf_FieldDescriptorProto_submsgs[0],
+  &google_protobuf_FieldDescriptorProto__fields[0],
+  UPB_SIZE(80, 128), 10, false,
+};
+
+static const upb_msglayout *const google_protobuf_OneofDescriptorProto_submsgs[1] = {
+  &google_protobuf_OneofOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_OneofDescriptorProto__fields[2] = {
+  {1, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 2, 0, 11, 1},
+};
+
+const upb_msglayout google_protobuf_OneofDescriptorProto_msginit = {
+  &google_protobuf_OneofDescriptorProto_submsgs[0],
+  &google_protobuf_OneofDescriptorProto__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_EnumDescriptorProto_submsgs[3] = {
+  &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit,
+  &google_protobuf_EnumOptions_msginit,
+  &google_protobuf_EnumValueDescriptorProto_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_EnumDescriptorProto__fields[5] = {
+  {1, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {2, UPB_SIZE(16, 32), 0, 2, 11, 3},
+  {3, UPB_SIZE(12, 24), 2, 1, 11, 1},
+  {4, UPB_SIZE(20, 40), 0, 0, 11, 3},
+  {5, UPB_SIZE(24, 48), 0, 0, 9, 3},
+};
+
+const upb_msglayout google_protobuf_EnumDescriptorProto_msginit = {
+  &google_protobuf_EnumDescriptorProto_submsgs[0],
+  &google_protobuf_EnumDescriptorProto__fields[0],
+  UPB_SIZE(32, 64), 5, false,
+};
+
+static const upb_msglayout_field google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[2] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit = {
+  NULL,
+  &google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[0],
+  UPB_SIZE(12, 12), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_EnumValueDescriptorProto_submsgs[1] = {
+  &google_protobuf_EnumValueOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_EnumValueDescriptorProto__fields[3] = {
+  {1, UPB_SIZE(8, 8), 2, 0, 9, 1},
+  {2, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {3, UPB_SIZE(16, 24), 3, 0, 11, 1},
+};
+
+const upb_msglayout google_protobuf_EnumValueDescriptorProto_msginit = {
+  &google_protobuf_EnumValueDescriptorProto_submsgs[0],
+  &google_protobuf_EnumValueDescriptorProto__fields[0],
+  UPB_SIZE(24, 32), 3, false,
+};
+
+static const upb_msglayout *const google_protobuf_ServiceDescriptorProto_submsgs[2] = {
+  &google_protobuf_MethodDescriptorProto_msginit,
+  &google_protobuf_ServiceOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_ServiceDescriptorProto__fields[3] = {
+  {1, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {2, UPB_SIZE(16, 32), 0, 0, 11, 3},
+  {3, UPB_SIZE(12, 24), 2, 1, 11, 1},
+};
+
+const upb_msglayout google_protobuf_ServiceDescriptorProto_msginit = {
+  &google_protobuf_ServiceDescriptorProto_submsgs[0],
+  &google_protobuf_ServiceDescriptorProto__fields[0],
+  UPB_SIZE(24, 48), 3, false,
+};
+
+static const upb_msglayout *const google_protobuf_MethodDescriptorProto_submsgs[1] = {
+  &google_protobuf_MethodOptions_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_MethodDescriptorProto__fields[6] = {
+  {1, UPB_SIZE(4, 8), 3, 0, 9, 1},
+  {2, UPB_SIZE(12, 24), 4, 0, 9, 1},
+  {3, UPB_SIZE(20, 40), 5, 0, 9, 1},
+  {4, UPB_SIZE(28, 56), 6, 0, 11, 1},
+  {5, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {6, UPB_SIZE(2, 2), 2, 0, 8, 1},
+};
+
+const upb_msglayout google_protobuf_MethodDescriptorProto_msginit = {
+  &google_protobuf_MethodDescriptorProto_submsgs[0],
+  &google_protobuf_MethodDescriptorProto__fields[0],
+  UPB_SIZE(32, 64), 6, false,
+};
+
+static const upb_msglayout *const google_protobuf_FileOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_FileOptions__fields[21] = {
+  {1, UPB_SIZE(28, 32), 11, 0, 9, 1},
+  {8, UPB_SIZE(36, 48), 12, 0, 9, 1},
+  {9, UPB_SIZE(8, 8), 1, 0, 14, 1},
+  {10, UPB_SIZE(16, 16), 2, 0, 8, 1},
+  {11, UPB_SIZE(44, 64), 13, 0, 9, 1},
+  {16, UPB_SIZE(17, 17), 3, 0, 8, 1},
+  {17, UPB_SIZE(18, 18), 4, 0, 8, 1},
+  {18, UPB_SIZE(19, 19), 5, 0, 8, 1},
+  {20, UPB_SIZE(20, 20), 6, 0, 8, 1},
+  {23, UPB_SIZE(21, 21), 7, 0, 8, 1},
+  {27, UPB_SIZE(22, 22), 8, 0, 8, 1},
+  {31, UPB_SIZE(23, 23), 9, 0, 8, 1},
+  {36, UPB_SIZE(52, 80), 14, 0, 9, 1},
+  {37, UPB_SIZE(60, 96), 15, 0, 9, 1},
+  {39, UPB_SIZE(68, 112), 16, 0, 9, 1},
+  {40, UPB_SIZE(76, 128), 17, 0, 9, 1},
+  {41, UPB_SIZE(84, 144), 18, 0, 9, 1},
+  {42, UPB_SIZE(24, 24), 10, 0, 8, 1},
+  {44, UPB_SIZE(92, 160), 19, 0, 9, 1},
+  {45, UPB_SIZE(100, 176), 20, 0, 9, 1},
+  {999, UPB_SIZE(108, 192), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_FileOptions_msginit = {
+  &google_protobuf_FileOptions_submsgs[0],
+  &google_protobuf_FileOptions__fields[0],
+  UPB_SIZE(112, 208), 21, false,
+};
+
+static const upb_msglayout *const google_protobuf_MessageOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_MessageOptions__fields[5] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {2, UPB_SIZE(2, 2), 2, 0, 8, 1},
+  {3, UPB_SIZE(3, 3), 3, 0, 8, 1},
+  {7, UPB_SIZE(4, 4), 4, 0, 8, 1},
+  {999, UPB_SIZE(8, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_MessageOptions_msginit = {
+  &google_protobuf_MessageOptions_submsgs[0],
+  &google_protobuf_MessageOptions__fields[0],
+  UPB_SIZE(12, 16), 5, false,
+};
+
+static const upb_msglayout *const google_protobuf_FieldOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_FieldOptions__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 14, 1},
+  {2, UPB_SIZE(24, 24), 3, 0, 8, 1},
+  {3, UPB_SIZE(25, 25), 4, 0, 8, 1},
+  {5, UPB_SIZE(26, 26), 5, 0, 8, 1},
+  {6, UPB_SIZE(16, 16), 2, 0, 14, 1},
+  {10, UPB_SIZE(27, 27), 6, 0, 8, 1},
+  {999, UPB_SIZE(28, 32), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_FieldOptions_msginit = {
+  &google_protobuf_FieldOptions_submsgs[0],
+  &google_protobuf_FieldOptions__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout *const google_protobuf_OneofOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_OneofOptions__fields[1] = {
+  {999, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_OneofOptions_msginit = {
+  &google_protobuf_OneofOptions_submsgs[0],
+  &google_protobuf_OneofOptions__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const google_protobuf_EnumOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_EnumOptions__fields[3] = {
+  {2, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {3, UPB_SIZE(2, 2), 2, 0, 8, 1},
+  {999, UPB_SIZE(4, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_EnumOptions_msginit = {
+  &google_protobuf_EnumOptions_submsgs[0],
+  &google_protobuf_EnumOptions__fields[0],
+  UPB_SIZE(8, 16), 3, false,
+};
+
+static const upb_msglayout *const google_protobuf_EnumValueOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_EnumValueOptions__fields[2] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {999, UPB_SIZE(4, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_EnumValueOptions_msginit = {
+  &google_protobuf_EnumValueOptions_submsgs[0],
+  &google_protobuf_EnumValueOptions__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_ServiceOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_ServiceOptions__fields[2] = {
+  {33, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {999, UPB_SIZE(4, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_ServiceOptions_msginit = {
+  &google_protobuf_ServiceOptions_submsgs[0],
+  &google_protobuf_ServiceOptions__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_MethodOptions_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_MethodOptions__fields[3] = {
+  {33, UPB_SIZE(16, 16), 2, 0, 8, 1},
+  {34, UPB_SIZE(8, 8), 1, 0, 14, 1},
+  {999, UPB_SIZE(20, 24), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_MethodOptions_msginit = {
+  &google_protobuf_MethodOptions_submsgs[0],
+  &google_protobuf_MethodOptions__fields[0],
+  UPB_SIZE(24, 32), 3, false,
+};
+
+static const upb_msglayout *const google_protobuf_UninterpretedOption_submsgs[1] = {
+  &google_protobuf_UninterpretedOption_NamePart_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_UninterpretedOption__fields[7] = {
+  {2, UPB_SIZE(56, 80), 0, 0, 11, 3},
+  {3, UPB_SIZE(32, 32), 4, 0, 9, 1},
+  {4, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {5, UPB_SIZE(16, 16), 2, 0, 3, 1},
+  {6, UPB_SIZE(24, 24), 3, 0, 1, 1},
+  {7, UPB_SIZE(40, 48), 5, 0, 12, 1},
+  {8, UPB_SIZE(48, 64), 6, 0, 9, 1},
+};
+
+const upb_msglayout google_protobuf_UninterpretedOption_msginit = {
+  &google_protobuf_UninterpretedOption_submsgs[0],
+  &google_protobuf_UninterpretedOption__fields[0],
+  UPB_SIZE(64, 96), 7, false,
+};
+
+static const upb_msglayout_field google_protobuf_UninterpretedOption_NamePart__fields[2] = {
+  {1, UPB_SIZE(4, 8), 2, 0, 9, 2},
+  {2, UPB_SIZE(1, 1), 1, 0, 8, 2},
+};
+
+const upb_msglayout google_protobuf_UninterpretedOption_NamePart_msginit = {
+  NULL,
+  &google_protobuf_UninterpretedOption_NamePart__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_SourceCodeInfo_submsgs[1] = {
+  &google_protobuf_SourceCodeInfo_Location_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_SourceCodeInfo__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_SourceCodeInfo_msginit = {
+  &google_protobuf_SourceCodeInfo_submsgs[0],
+  &google_protobuf_SourceCodeInfo__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_SourceCodeInfo_Location__fields[5] = {
+  {1, UPB_SIZE(20, 40), 0, 0, 5, 3},
+  {2, UPB_SIZE(24, 48), 0, 0, 5, 3},
+  {3, UPB_SIZE(4, 8), 1, 0, 9, 1},
+  {4, UPB_SIZE(12, 24), 2, 0, 9, 1},
+  {6, UPB_SIZE(28, 56), 0, 0, 9, 3},
+};
+
+const upb_msglayout google_protobuf_SourceCodeInfo_Location_msginit = {
+  NULL,
+  &google_protobuf_SourceCodeInfo_Location__fields[0],
+  UPB_SIZE(32, 64), 5, false,
+};
+
+static const upb_msglayout *const google_protobuf_GeneratedCodeInfo_submsgs[1] = {
+  &google_protobuf_GeneratedCodeInfo_Annotation_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_GeneratedCodeInfo__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_GeneratedCodeInfo_msginit = {
+  &google_protobuf_GeneratedCodeInfo_submsgs[0],
+  &google_protobuf_GeneratedCodeInfo__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_GeneratedCodeInfo_Annotation__fields[4] = {
+  {1, UPB_SIZE(20, 32), 0, 0, 5, 3},
+  {2, UPB_SIZE(12, 16), 3, 0, 9, 1},
+  {3, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {4, UPB_SIZE(8, 8), 2, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_GeneratedCodeInfo_Annotation_msginit = {
+  NULL,
+  &google_protobuf_GeneratedCodeInfo_Annotation__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h
new file mode 100644
index 0000000..b78e968
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/descriptor.upb.h	
@@ -0,0 +1,1714 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/descriptor.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_FileDescriptorSet;
+struct google_protobuf_FileDescriptorProto;
+struct google_protobuf_DescriptorProto;
+struct google_protobuf_DescriptorProto_ExtensionRange;
+struct google_protobuf_DescriptorProto_ReservedRange;
+struct google_protobuf_ExtensionRangeOptions;
+struct google_protobuf_FieldDescriptorProto;
+struct google_protobuf_OneofDescriptorProto;
+struct google_protobuf_EnumDescriptorProto;
+struct google_protobuf_EnumDescriptorProto_EnumReservedRange;
+struct google_protobuf_EnumValueDescriptorProto;
+struct google_protobuf_ServiceDescriptorProto;
+struct google_protobuf_MethodDescriptorProto;
+struct google_protobuf_FileOptions;
+struct google_protobuf_MessageOptions;
+struct google_protobuf_FieldOptions;
+struct google_protobuf_OneofOptions;
+struct google_protobuf_EnumOptions;
+struct google_protobuf_EnumValueOptions;
+struct google_protobuf_ServiceOptions;
+struct google_protobuf_MethodOptions;
+struct google_protobuf_UninterpretedOption;
+struct google_protobuf_UninterpretedOption_NamePart;
+struct google_protobuf_SourceCodeInfo;
+struct google_protobuf_SourceCodeInfo_Location;
+struct google_protobuf_GeneratedCodeInfo;
+struct google_protobuf_GeneratedCodeInfo_Annotation;
+typedef struct google_protobuf_FileDescriptorSet google_protobuf_FileDescriptorSet;
+typedef struct google_protobuf_FileDescriptorProto google_protobuf_FileDescriptorProto;
+typedef struct google_protobuf_DescriptorProto google_protobuf_DescriptorProto;
+typedef struct google_protobuf_DescriptorProto_ExtensionRange google_protobuf_DescriptorProto_ExtensionRange;
+typedef struct google_protobuf_DescriptorProto_ReservedRange google_protobuf_DescriptorProto_ReservedRange;
+typedef struct google_protobuf_ExtensionRangeOptions google_protobuf_ExtensionRangeOptions;
+typedef struct google_protobuf_FieldDescriptorProto google_protobuf_FieldDescriptorProto;
+typedef struct google_protobuf_OneofDescriptorProto google_protobuf_OneofDescriptorProto;
+typedef struct google_protobuf_EnumDescriptorProto google_protobuf_EnumDescriptorProto;
+typedef struct google_protobuf_EnumDescriptorProto_EnumReservedRange google_protobuf_EnumDescriptorProto_EnumReservedRange;
+typedef struct google_protobuf_EnumValueDescriptorProto google_protobuf_EnumValueDescriptorProto;
+typedef struct google_protobuf_ServiceDescriptorProto google_protobuf_ServiceDescriptorProto;
+typedef struct google_protobuf_MethodDescriptorProto google_protobuf_MethodDescriptorProto;
+typedef struct google_protobuf_FileOptions google_protobuf_FileOptions;
+typedef struct google_protobuf_MessageOptions google_protobuf_MessageOptions;
+typedef struct google_protobuf_FieldOptions google_protobuf_FieldOptions;
+typedef struct google_protobuf_OneofOptions google_protobuf_OneofOptions;
+typedef struct google_protobuf_EnumOptions google_protobuf_EnumOptions;
+typedef struct google_protobuf_EnumValueOptions google_protobuf_EnumValueOptions;
+typedef struct google_protobuf_ServiceOptions google_protobuf_ServiceOptions;
+typedef struct google_protobuf_MethodOptions google_protobuf_MethodOptions;
+typedef struct google_protobuf_UninterpretedOption google_protobuf_UninterpretedOption;
+typedef struct google_protobuf_UninterpretedOption_NamePart google_protobuf_UninterpretedOption_NamePart;
+typedef struct google_protobuf_SourceCodeInfo google_protobuf_SourceCodeInfo;
+typedef struct google_protobuf_SourceCodeInfo_Location google_protobuf_SourceCodeInfo_Location;
+typedef struct google_protobuf_GeneratedCodeInfo google_protobuf_GeneratedCodeInfo;
+typedef struct google_protobuf_GeneratedCodeInfo_Annotation google_protobuf_GeneratedCodeInfo_Annotation;
+extern const upb_msglayout google_protobuf_FileDescriptorSet_msginit;
+extern const upb_msglayout google_protobuf_FileDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_ExtensionRange_msginit;
+extern const upb_msglayout google_protobuf_DescriptorProto_ReservedRange_msginit;
+extern const upb_msglayout google_protobuf_ExtensionRangeOptions_msginit;
+extern const upb_msglayout google_protobuf_FieldDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_OneofDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_EnumDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit;
+extern const upb_msglayout google_protobuf_EnumValueDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_ServiceDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_MethodDescriptorProto_msginit;
+extern const upb_msglayout google_protobuf_FileOptions_msginit;
+extern const upb_msglayout google_protobuf_MessageOptions_msginit;
+extern const upb_msglayout google_protobuf_FieldOptions_msginit;
+extern const upb_msglayout google_protobuf_OneofOptions_msginit;
+extern const upb_msglayout google_protobuf_EnumOptions_msginit;
+extern const upb_msglayout google_protobuf_EnumValueOptions_msginit;
+extern const upb_msglayout google_protobuf_ServiceOptions_msginit;
+extern const upb_msglayout google_protobuf_MethodOptions_msginit;
+extern const upb_msglayout google_protobuf_UninterpretedOption_msginit;
+extern const upb_msglayout google_protobuf_UninterpretedOption_NamePart_msginit;
+extern const upb_msglayout google_protobuf_SourceCodeInfo_msginit;
+extern const upb_msglayout google_protobuf_SourceCodeInfo_Location_msginit;
+extern const upb_msglayout google_protobuf_GeneratedCodeInfo_msginit;
+extern const upb_msglayout google_protobuf_GeneratedCodeInfo_Annotation_msginit;
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_LABEL_OPTIONAL = 1,
+  google_protobuf_FieldDescriptorProto_LABEL_REQUIRED = 2,
+  google_protobuf_FieldDescriptorProto_LABEL_REPEATED = 3
+} google_protobuf_FieldDescriptorProto_Label;
+
+typedef enum {
+  google_protobuf_FieldDescriptorProto_TYPE_DOUBLE = 1,
+  google_protobuf_FieldDescriptorProto_TYPE_FLOAT = 2,
+  google_protobuf_FieldDescriptorProto_TYPE_INT64 = 3,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT64 = 4,
+  google_protobuf_FieldDescriptorProto_TYPE_INT32 = 5,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED64 = 6,
+  google_protobuf_FieldDescriptorProto_TYPE_FIXED32 = 7,
+  google_protobuf_FieldDescriptorProto_TYPE_BOOL = 8,
+  google_protobuf_FieldDescriptorProto_TYPE_STRING = 9,
+  google_protobuf_FieldDescriptorProto_TYPE_GROUP = 10,
+  google_protobuf_FieldDescriptorProto_TYPE_MESSAGE = 11,
+  google_protobuf_FieldDescriptorProto_TYPE_BYTES = 12,
+  google_protobuf_FieldDescriptorProto_TYPE_UINT32 = 13,
+  google_protobuf_FieldDescriptorProto_TYPE_ENUM = 14,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED32 = 15,
+  google_protobuf_FieldDescriptorProto_TYPE_SFIXED64 = 16,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT32 = 17,
+  google_protobuf_FieldDescriptorProto_TYPE_SINT64 = 18
+} google_protobuf_FieldDescriptorProto_Type;
+
+typedef enum {
+  google_protobuf_FieldOptions_STRING = 0,
+  google_protobuf_FieldOptions_CORD = 1,
+  google_protobuf_FieldOptions_STRING_PIECE = 2
+} google_protobuf_FieldOptions_CType;
+
+typedef enum {
+  google_protobuf_FieldOptions_JS_NORMAL = 0,
+  google_protobuf_FieldOptions_JS_STRING = 1,
+  google_protobuf_FieldOptions_JS_NUMBER = 2
+} google_protobuf_FieldOptions_JSType;
+
+typedef enum {
+  google_protobuf_FileOptions_SPEED = 1,
+  google_protobuf_FileOptions_CODE_SIZE = 2,
+  google_protobuf_FileOptions_LITE_RUNTIME = 3
+} google_protobuf_FileOptions_OptimizeMode;
+
+typedef enum {
+  google_protobuf_MethodOptions_IDEMPOTENCY_UNKNOWN = 0,
+  google_protobuf_MethodOptions_NO_SIDE_EFFECTS = 1,
+  google_protobuf_MethodOptions_IDEMPOTENT = 2
+} google_protobuf_MethodOptions_IdempotencyLevel;
+
+
+/* google.protobuf.FileDescriptorSet */
+
+UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_new(upb_arena *arena) {
+  return (google_protobuf_FileDescriptorSet *)upb_msg_new(&google_protobuf_FileDescriptorSet_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileDescriptorSet *google_protobuf_FileDescriptorSet_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileDescriptorSet *ret = google_protobuf_FileDescriptorSet_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorSet_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileDescriptorSet_serialize(const google_protobuf_FileDescriptorSet *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorSet_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_FileDescriptorProto* const* google_protobuf_FileDescriptorSet_file(const google_protobuf_FileDescriptorSet *msg, size_t *len) { return (const google_protobuf_FileDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_FileDescriptorProto** google_protobuf_FileDescriptorSet_mutable_file(google_protobuf_FileDescriptorSet *msg, size_t *len) {
+  return (google_protobuf_FileDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_FileDescriptorProto** google_protobuf_FileDescriptorSet_resize_file(google_protobuf_FileDescriptorSet *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FileDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FileDescriptorProto* google_protobuf_FileDescriptorSet_add_file(google_protobuf_FileDescriptorSet *msg, upb_arena *arena) {
+  struct google_protobuf_FileDescriptorProto* sub = (struct google_protobuf_FileDescriptorProto*)upb_msg_new(&google_protobuf_FileDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FileDescriptorProto */
+
+UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_FileDescriptorProto *)upb_msg_new(&google_protobuf_FileDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileDescriptorProto *google_protobuf_FileDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileDescriptorProto *ret = google_protobuf_FileDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileDescriptorProto_serialize(const google_protobuf_FileDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_name(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_name(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_package(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_package(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* google_protobuf_FileDescriptorProto_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const google_protobuf_DescriptorProto* const* google_protobuf_FileDescriptorProto_message_type(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto* const* google_protobuf_FileDescriptorProto_enum_type(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+UPB_INLINE const google_protobuf_ServiceDescriptorProto* const* google_protobuf_FileDescriptorProto_service(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_ServiceDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(48, 96), len); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_FileDescriptorProto_extension(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(52, 104), len); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_options(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_options(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_FileOptions*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_source_code_info(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_source_code_info(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_SourceCodeInfo*, UPB_SIZE(32, 64)); }
+UPB_INLINE int32_t const* google_protobuf_FileDescriptorProto_public_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(56, 112), len); }
+UPB_INLINE int32_t const* google_protobuf_FileDescriptorProto_weak_dependency(const google_protobuf_FileDescriptorProto *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(60, 120), len); }
+UPB_INLINE bool google_protobuf_FileDescriptorProto_has_syntax(const google_protobuf_FileDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_FileDescriptorProto_syntax(const google_protobuf_FileDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_name(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_package(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE upb_strview* google_protobuf_FileDescriptorProto_mutable_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE upb_strview* google_protobuf_FileDescriptorProto_resize_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_dependency(google_protobuf_FileDescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_FileDescriptorProto_mutable_message_type(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_FileDescriptorProto_resize_message_type(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto* google_protobuf_FileDescriptorProto_add_message_type(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto* sub = (struct google_protobuf_DescriptorProto*)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_FileDescriptorProto_mutable_enum_type(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_FileDescriptorProto_resize_enum_type(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto* google_protobuf_FileDescriptorProto_add_enum_type(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto* sub = (struct google_protobuf_EnumDescriptorProto*)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto** google_protobuf_FileDescriptorProto_mutable_service(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_ServiceDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 96), len);
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto** google_protobuf_FileDescriptorProto_resize_service(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_ServiceDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(48, 96), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_ServiceDescriptorProto* google_protobuf_FileDescriptorProto_add_service(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_ServiceDescriptorProto* sub = (struct google_protobuf_ServiceDescriptorProto*)upb_msg_new(&google_protobuf_ServiceDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 96), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_FileDescriptorProto_mutable_extension(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 104), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_FileDescriptorProto_resize_extension(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(52, 104), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_FileDescriptorProto_add_extension(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 104), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_options(google_protobuf_FileDescriptorProto *msg, google_protobuf_FileOptions* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, google_protobuf_FileOptions*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_FileOptions* google_protobuf_FileDescriptorProto_mutable_options(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FileOptions* sub = (struct google_protobuf_FileOptions*)google_protobuf_FileDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_FileOptions*)upb_msg_new(&google_protobuf_FileOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FileDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_source_code_info(google_protobuf_FileDescriptorProto *msg, google_protobuf_SourceCodeInfo* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, google_protobuf_SourceCodeInfo*, UPB_SIZE(32, 64)) = value;
+}
+UPB_INLINE struct google_protobuf_SourceCodeInfo* google_protobuf_FileDescriptorProto_mutable_source_code_info(google_protobuf_FileDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_SourceCodeInfo* sub = (struct google_protobuf_SourceCodeInfo*)google_protobuf_FileDescriptorProto_source_code_info(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_SourceCodeInfo*)upb_msg_new(&google_protobuf_SourceCodeInfo_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FileDescriptorProto_set_source_code_info(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_mutable_public_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 112), len);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_resize_public_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(56, 112), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_public_dependency(google_protobuf_FileDescriptorProto *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 112), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_mutable_weak_dependency(google_protobuf_FileDescriptorProto *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(60, 120), len);
+}
+UPB_INLINE int32_t* google_protobuf_FileDescriptorProto_resize_weak_dependency(google_protobuf_FileDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(60, 120), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_FileDescriptorProto_add_weak_dependency(google_protobuf_FileDescriptorProto *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(60, 120), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_FileDescriptorProto_set_syntax(google_protobuf_FileDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+
+/* google.protobuf.DescriptorProto */
+
+UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto *)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto *google_protobuf_DescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto *ret = google_protobuf_DescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_serialize(const google_protobuf_DescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_has_name(const google_protobuf_DescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_DescriptorProto_name(const google_protobuf_DescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_DescriptorProto_field(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE const google_protobuf_DescriptorProto* const* google_protobuf_DescriptorProto_nested_type(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto* const* google_protobuf_DescriptorProto_enum_type(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const google_protobuf_DescriptorProto_ExtensionRange* const* google_protobuf_DescriptorProto_extension_range(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto_ExtensionRange* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE const google_protobuf_FieldDescriptorProto* const* google_protobuf_DescriptorProto_extension(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_FieldDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(32, 64), len); }
+UPB_INLINE bool google_protobuf_DescriptorProto_has_options(const google_protobuf_DescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_MessageOptions* google_protobuf_DescriptorProto_options(const google_protobuf_DescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_MessageOptions*, UPB_SIZE(12, 24)); }
+UPB_INLINE const google_protobuf_OneofDescriptorProto* const* google_protobuf_DescriptorProto_oneof_decl(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_OneofDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(36, 72), len); }
+UPB_INLINE const google_protobuf_DescriptorProto_ReservedRange* const* google_protobuf_DescriptorProto_reserved_range(const google_protobuf_DescriptorProto *msg, size_t *len) { return (const google_protobuf_DescriptorProto_ReservedRange* const*)_upb_array_accessor(msg, UPB_SIZE(40, 80), len); }
+UPB_INLINE upb_strview const* google_protobuf_DescriptorProto_reserved_name(const google_protobuf_DescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(44, 88), len); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_set_name(google_protobuf_DescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_mutable_field(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_resize_field(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_DescriptorProto_add_field(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_DescriptorProto_mutable_nested_type(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto** google_protobuf_DescriptorProto_resize_nested_type(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto* google_protobuf_DescriptorProto_add_nested_type(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto* sub = (struct google_protobuf_DescriptorProto*)upb_msg_new(&google_protobuf_DescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_DescriptorProto_mutable_enum_type(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto** google_protobuf_DescriptorProto_resize_enum_type(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto* google_protobuf_DescriptorProto_add_enum_type(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto* sub = (struct google_protobuf_EnumDescriptorProto*)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange** google_protobuf_DescriptorProto_mutable_extension_range(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto_ExtensionRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange** google_protobuf_DescriptorProto_resize_extension_range(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ExtensionRange**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto_ExtensionRange* google_protobuf_DescriptorProto_add_extension_range(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto_ExtensionRange* sub = (struct google_protobuf_DescriptorProto_ExtensionRange*)upb_msg_new(&google_protobuf_DescriptorProto_ExtensionRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_mutable_extension(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(32, 64), len);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto** google_protobuf_DescriptorProto_resize_extension(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(32, 64), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_FieldDescriptorProto* google_protobuf_DescriptorProto_add_extension(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldDescriptorProto* sub = (struct google_protobuf_FieldDescriptorProto*)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(32, 64), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_set_options(google_protobuf_DescriptorProto *msg, google_protobuf_MessageOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_MessageOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_MessageOptions* google_protobuf_DescriptorProto_mutable_options(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MessageOptions* sub = (struct google_protobuf_MessageOptions*)google_protobuf_DescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_MessageOptions*)upb_msg_new(&google_protobuf_MessageOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_DescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto** google_protobuf_DescriptorProto_mutable_oneof_decl(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_OneofDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 72), len);
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto** google_protobuf_DescriptorProto_resize_oneof_decl(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_OneofDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 72), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_OneofDescriptorProto* google_protobuf_DescriptorProto_add_oneof_decl(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_OneofDescriptorProto* sub = (struct google_protobuf_OneofDescriptorProto*)upb_msg_new(&google_protobuf_OneofDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 72), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange** google_protobuf_DescriptorProto_mutable_reserved_range(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (google_protobuf_DescriptorProto_ReservedRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 80), len);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange** google_protobuf_DescriptorProto_resize_reserved_range(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ReservedRange**)_upb_array_resize_accessor(msg, UPB_SIZE(40, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_DescriptorProto_ReservedRange* google_protobuf_DescriptorProto_add_reserved_range(google_protobuf_DescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_DescriptorProto_ReservedRange* sub = (struct google_protobuf_DescriptorProto_ReservedRange*)upb_msg_new(&google_protobuf_DescriptorProto_ReservedRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* google_protobuf_DescriptorProto_mutable_reserved_name(google_protobuf_DescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 88), len);
+}
+UPB_INLINE upb_strview* google_protobuf_DescriptorProto_resize_reserved_name(google_protobuf_DescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(44, 88), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_DescriptorProto_add_reserved_name(google_protobuf_DescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 88), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.DescriptorProto.ExtensionRange */
+
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ExtensionRange *)upb_msg_new(&google_protobuf_DescriptorProto_ExtensionRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ExtensionRange *google_protobuf_DescriptorProto_ExtensionRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto_ExtensionRange *ret = google_protobuf_DescriptorProto_ExtensionRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ExtensionRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_ExtensionRange_serialize(const google_protobuf_DescriptorProto_ExtensionRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ExtensionRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_start(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ExtensionRange_start(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_end(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ExtensionRange_end(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ExtensionRange_has_options(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_options(const google_protobuf_DescriptorProto_ExtensionRange *msg) { return UPB_FIELD_AT(msg, const google_protobuf_ExtensionRangeOptions*, UPB_SIZE(12, 16)); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_start(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_end(google_protobuf_DescriptorProto_ExtensionRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ExtensionRange_set_options(google_protobuf_DescriptorProto_ExtensionRange *msg, google_protobuf_ExtensionRangeOptions* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, google_protobuf_ExtensionRangeOptions*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_ExtensionRangeOptions* google_protobuf_DescriptorProto_ExtensionRange_mutable_options(google_protobuf_DescriptorProto_ExtensionRange *msg, upb_arena *arena) {
+  struct google_protobuf_ExtensionRangeOptions* sub = (struct google_protobuf_ExtensionRangeOptions*)google_protobuf_DescriptorProto_ExtensionRange_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ExtensionRangeOptions*)upb_msg_new(&google_protobuf_ExtensionRangeOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_DescriptorProto_ExtensionRange_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.DescriptorProto.ReservedRange */
+
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_new(upb_arena *arena) {
+  return (google_protobuf_DescriptorProto_ReservedRange *)upb_msg_new(&google_protobuf_DescriptorProto_ReservedRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_DescriptorProto_ReservedRange *google_protobuf_DescriptorProto_ReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DescriptorProto_ReservedRange *ret = google_protobuf_DescriptorProto_ReservedRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DescriptorProto_ReservedRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DescriptorProto_ReservedRange_serialize(const google_protobuf_DescriptorProto_ReservedRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DescriptorProto_ReservedRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_DescriptorProto_ReservedRange_has_start(const google_protobuf_DescriptorProto_ReservedRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ReservedRange_start(const google_protobuf_DescriptorProto_ReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_DescriptorProto_ReservedRange_has_end(const google_protobuf_DescriptorProto_ReservedRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_DescriptorProto_ReservedRange_end(const google_protobuf_DescriptorProto_ReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_DescriptorProto_ReservedRange_set_start(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_DescriptorProto_ReservedRange_set_end(google_protobuf_DescriptorProto_ReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* google.protobuf.ExtensionRangeOptions */
+
+UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_new(upb_arena *arena) {
+  return (google_protobuf_ExtensionRangeOptions *)upb_msg_new(&google_protobuf_ExtensionRangeOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_ExtensionRangeOptions *google_protobuf_ExtensionRangeOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ExtensionRangeOptions *ret = google_protobuf_ExtensionRangeOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ExtensionRangeOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ExtensionRangeOptions_serialize(const google_protobuf_ExtensionRangeOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ExtensionRangeOptions_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_ExtensionRangeOptions_uninterpreted_option(const google_protobuf_ExtensionRangeOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ExtensionRangeOptions_mutable_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ExtensionRangeOptions_resize_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_ExtensionRangeOptions_add_uninterpreted_option(google_protobuf_ExtensionRangeOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FieldDescriptorProto */
+
+UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_FieldDescriptorProto *)upb_msg_new(&google_protobuf_FieldDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_FieldDescriptorProto *google_protobuf_FieldDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FieldDescriptorProto *ret = google_protobuf_FieldDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FieldDescriptorProto_serialize(const google_protobuf_FieldDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FieldDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_extendee(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_extendee(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_number(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_number(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_label(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_label(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_type(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_type(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_type_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_type_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_default_value(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_default_value(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_options(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE const google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_options(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_FieldOptions*, UPB_SIZE(72, 112)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_oneof_index(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t google_protobuf_FieldDescriptorProto_oneof_index(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(28, 28)); }
+UPB_INLINE bool google_protobuf_FieldDescriptorProto_has_json_name(const google_protobuf_FieldDescriptorProto *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE upb_strview google_protobuf_FieldDescriptorProto_json_name(const google_protobuf_FieldDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)); }
+
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_extendee(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_number(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_label(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_type(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_type_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_default_value(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_options(google_protobuf_FieldDescriptorProto *msg, google_protobuf_FieldOptions* value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, google_protobuf_FieldOptions*, UPB_SIZE(72, 112)) = value;
+}
+UPB_INLINE struct google_protobuf_FieldOptions* google_protobuf_FieldDescriptorProto_mutable_options(google_protobuf_FieldDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_FieldOptions* sub = (struct google_protobuf_FieldOptions*)google_protobuf_FieldDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_FieldOptions*)upb_msg_new(&google_protobuf_FieldOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_FieldDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_oneof_index(google_protobuf_FieldDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(28, 28)) = value;
+}
+UPB_INLINE void google_protobuf_FieldDescriptorProto_set_json_name(google_protobuf_FieldDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)) = value;
+}
+
+/* google.protobuf.OneofDescriptorProto */
+
+UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_OneofDescriptorProto *)upb_msg_new(&google_protobuf_OneofDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_OneofDescriptorProto *google_protobuf_OneofDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_OneofDescriptorProto *ret = google_protobuf_OneofDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_OneofDescriptorProto_serialize(const google_protobuf_OneofDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_OneofDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_OneofDescriptorProto_has_name(const google_protobuf_OneofDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_OneofDescriptorProto_name(const google_protobuf_OneofDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_OneofDescriptorProto_has_options(const google_protobuf_OneofDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_options(const google_protobuf_OneofDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_OneofOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void google_protobuf_OneofDescriptorProto_set_name(google_protobuf_OneofDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_OneofDescriptorProto_set_options(google_protobuf_OneofDescriptorProto *msg, google_protobuf_OneofOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_OneofOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_OneofOptions* google_protobuf_OneofDescriptorProto_mutable_options(google_protobuf_OneofDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_OneofOptions* sub = (struct google_protobuf_OneofOptions*)google_protobuf_OneofDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_OneofOptions*)upb_msg_new(&google_protobuf_OneofOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_OneofDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.EnumDescriptorProto */
+
+UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto *)upb_msg_new(&google_protobuf_EnumDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto *google_protobuf_EnumDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumDescriptorProto *ret = google_protobuf_EnumDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumDescriptorProto_serialize(const google_protobuf_EnumDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_has_name(const google_protobuf_EnumDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_EnumDescriptorProto_name(const google_protobuf_EnumDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_EnumValueDescriptorProto* const* google_protobuf_EnumDescriptorProto_value(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumValueDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_has_options(const google_protobuf_EnumDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_options(const google_protobuf_EnumDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_EnumOptions*, UPB_SIZE(12, 24)); }
+UPB_INLINE const google_protobuf_EnumDescriptorProto_EnumReservedRange* const* google_protobuf_EnumDescriptorProto_reserved_range(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (const google_protobuf_EnumDescriptorProto_EnumReservedRange* const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE upb_strview const* google_protobuf_EnumDescriptorProto_reserved_name(const google_protobuf_EnumDescriptorProto *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+
+UPB_INLINE void google_protobuf_EnumDescriptorProto_set_name(google_protobuf_EnumDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto** google_protobuf_EnumDescriptorProto_mutable_value(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumValueDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto** google_protobuf_EnumDescriptorProto_resize_value(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumValueDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumValueDescriptorProto* google_protobuf_EnumDescriptorProto_add_value(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumValueDescriptorProto* sub = (struct google_protobuf_EnumValueDescriptorProto*)upb_msg_new(&google_protobuf_EnumValueDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_EnumDescriptorProto_set_options(google_protobuf_EnumDescriptorProto *msg, google_protobuf_EnumOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_EnumOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_EnumOptions* google_protobuf_EnumDescriptorProto_mutable_options(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumOptions* sub = (struct google_protobuf_EnumOptions*)google_protobuf_EnumDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_EnumOptions*)upb_msg_new(&google_protobuf_EnumOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_EnumDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange** google_protobuf_EnumDescriptorProto_mutable_reserved_range(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange** google_protobuf_EnumDescriptorProto_resize_reserved_range(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_EnumDescriptorProto_EnumReservedRange* google_protobuf_EnumDescriptorProto_add_reserved_range(google_protobuf_EnumDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumDescriptorProto_EnumReservedRange* sub = (struct google_protobuf_EnumDescriptorProto_EnumReservedRange*)upb_msg_new(&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE upb_strview* google_protobuf_EnumDescriptorProto_mutable_reserved_name(google_protobuf_EnumDescriptorProto *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* google_protobuf_EnumDescriptorProto_resize_reserved_name(google_protobuf_EnumDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_add_reserved_name(google_protobuf_EnumDescriptorProto *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.EnumDescriptorProto.EnumReservedRange */
+
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_new(upb_arena *arena) {
+  return (google_protobuf_EnumDescriptorProto_EnumReservedRange *)upb_msg_new(&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumDescriptorProto_EnumReservedRange *google_protobuf_EnumDescriptorProto_EnumReservedRange_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumDescriptorProto_EnumReservedRange *ret = google_protobuf_EnumDescriptorProto_EnumReservedRange_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumDescriptorProto_EnumReservedRange_serialize(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_EnumReservedRange_has_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_start(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_EnumDescriptorProto_EnumReservedRange_has_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_EnumDescriptorProto_EnumReservedRange_end(const google_protobuf_EnumDescriptorProto_EnumReservedRange *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_start(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_EnumDescriptorProto_EnumReservedRange_set_end(google_protobuf_EnumDescriptorProto_EnumReservedRange *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* google.protobuf.EnumValueDescriptorProto */
+
+UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_EnumValueDescriptorProto *)upb_msg_new(&google_protobuf_EnumValueDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumValueDescriptorProto *google_protobuf_EnumValueDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumValueDescriptorProto *ret = google_protobuf_EnumValueDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumValueDescriptorProto_serialize(const google_protobuf_EnumValueDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumValueDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_name(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_EnumValueDescriptorProto_name(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_number(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_EnumValueDescriptorProto_number(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_EnumValueDescriptorProto_has_options(const google_protobuf_EnumValueDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_options(const google_protobuf_EnumValueDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_EnumValueOptions*, UPB_SIZE(16, 24)); }
+
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_name(google_protobuf_EnumValueDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_number(google_protobuf_EnumValueDescriptorProto *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_EnumValueDescriptorProto_set_options(google_protobuf_EnumValueDescriptorProto *msg, google_protobuf_EnumValueOptions* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, google_protobuf_EnumValueOptions*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_EnumValueOptions* google_protobuf_EnumValueDescriptorProto_mutable_options(google_protobuf_EnumValueDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_EnumValueOptions* sub = (struct google_protobuf_EnumValueOptions*)google_protobuf_EnumValueDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_EnumValueOptions*)upb_msg_new(&google_protobuf_EnumValueOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_EnumValueDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.ServiceDescriptorProto */
+
+UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_ServiceDescriptorProto *)upb_msg_new(&google_protobuf_ServiceDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_ServiceDescriptorProto *google_protobuf_ServiceDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ServiceDescriptorProto *ret = google_protobuf_ServiceDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ServiceDescriptorProto_serialize(const google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ServiceDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_ServiceDescriptorProto_has_name(const google_protobuf_ServiceDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_ServiceDescriptorProto_name(const google_protobuf_ServiceDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const google_protobuf_MethodDescriptorProto* const* google_protobuf_ServiceDescriptorProto_method(const google_protobuf_ServiceDescriptorProto *msg, size_t *len) { return (const google_protobuf_MethodDescriptorProto* const*)_upb_array_accessor(msg, UPB_SIZE(16, 32), len); }
+UPB_INLINE bool google_protobuf_ServiceDescriptorProto_has_options(const google_protobuf_ServiceDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_options(const google_protobuf_ServiceDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_ServiceOptions*, UPB_SIZE(12, 24)); }
+
+UPB_INLINE void google_protobuf_ServiceDescriptorProto_set_name(google_protobuf_ServiceDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto** google_protobuf_ServiceDescriptorProto_mutable_method(google_protobuf_ServiceDescriptorProto *msg, size_t *len) {
+  return (google_protobuf_MethodDescriptorProto**)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 32), len);
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto** google_protobuf_ServiceDescriptorProto_resize_method(google_protobuf_ServiceDescriptorProto *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_MethodDescriptorProto**)_upb_array_resize_accessor(msg, UPB_SIZE(16, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_MethodDescriptorProto* google_protobuf_ServiceDescriptorProto_add_method(google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MethodDescriptorProto* sub = (struct google_protobuf_MethodDescriptorProto*)upb_msg_new(&google_protobuf_MethodDescriptorProto_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_ServiceDescriptorProto_set_options(google_protobuf_ServiceDescriptorProto *msg, google_protobuf_ServiceOptions* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, google_protobuf_ServiceOptions*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_ServiceOptions* google_protobuf_ServiceDescriptorProto_mutable_options(google_protobuf_ServiceDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_ServiceOptions* sub = (struct google_protobuf_ServiceOptions*)google_protobuf_ServiceDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ServiceOptions*)upb_msg_new(&google_protobuf_ServiceOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_ServiceDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.MethodDescriptorProto */
+
+UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_new(upb_arena *arena) {
+  return (google_protobuf_MethodDescriptorProto *)upb_msg_new(&google_protobuf_MethodDescriptorProto_msginit, arena);
+}
+UPB_INLINE google_protobuf_MethodDescriptorProto *google_protobuf_MethodDescriptorProto_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MethodDescriptorProto *ret = google_protobuf_MethodDescriptorProto_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodDescriptorProto_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MethodDescriptorProto_serialize(const google_protobuf_MethodDescriptorProto *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MethodDescriptorProto_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_name(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_name(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_input_type(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_input_type(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_output_type(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_MethodDescriptorProto_output_type(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_options(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_options(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, const google_protobuf_MethodOptions*, UPB_SIZE(28, 56)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_client_streaming(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_client_streaming(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_has_server_streaming(const google_protobuf_MethodDescriptorProto *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MethodDescriptorProto_server_streaming(const google_protobuf_MethodDescriptorProto *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_name(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_input_type(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_output_type(google_protobuf_MethodDescriptorProto *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_options(google_protobuf_MethodDescriptorProto *msg, google_protobuf_MethodOptions* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, google_protobuf_MethodOptions*, UPB_SIZE(28, 56)) = value;
+}
+UPB_INLINE struct google_protobuf_MethodOptions* google_protobuf_MethodDescriptorProto_mutable_options(google_protobuf_MethodDescriptorProto *msg, upb_arena *arena) {
+  struct google_protobuf_MethodOptions* sub = (struct google_protobuf_MethodOptions*)google_protobuf_MethodDescriptorProto_options(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_MethodOptions*)upb_msg_new(&google_protobuf_MethodOptions_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_MethodDescriptorProto_set_options(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_client_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_MethodDescriptorProto_set_server_streaming(google_protobuf_MethodDescriptorProto *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* google.protobuf.FileOptions */
+
+UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_new(upb_arena *arena) {
+  return (google_protobuf_FileOptions *)upb_msg_new(&google_protobuf_FileOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_FileOptions *google_protobuf_FileOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FileOptions *ret = google_protobuf_FileOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FileOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FileOptions_serialize(const google_protobuf_FileOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FileOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FileOptions_has_java_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 11); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_java_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 32)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_outer_classname(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 12); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_java_outer_classname(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 48)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_optimize_for(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FileOptions_optimize_for(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_multiple_files(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_FileOptions_java_multiple_files(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_go_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 13); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_go_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 64)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_cc_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_FileOptions_cc_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_FileOptions_java_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(18, 18)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_py_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE bool google_protobuf_FileOptions_py_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(19, 19)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE bool google_protobuf_FileOptions_java_generate_equals_and_hash(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(20, 20)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_deprecated(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE bool google_protobuf_FileOptions_deprecated(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(21, 21)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_java_string_check_utf8(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE bool google_protobuf_FileOptions_java_string_check_utf8(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(22, 22)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_cc_enable_arenas(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE bool google_protobuf_FileOptions_cc_enable_arenas(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(23, 23)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_objc_class_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 14); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_objc_class_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 80)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_csharp_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 15); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_csharp_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(60, 96)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_swift_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 16); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_swift_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(68, 112)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_class_prefix(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 17); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_class_prefix(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(76, 128)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 18); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(84, 144)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_generic_services(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE bool google_protobuf_FileOptions_php_generic_services(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_php_metadata_namespace(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 19); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_php_metadata_namespace(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(92, 160)); }
+UPB_INLINE bool google_protobuf_FileOptions_has_ruby_package(const google_protobuf_FileOptions *msg) { return _upb_has_field(msg, 20); }
+UPB_INLINE upb_strview google_protobuf_FileOptions_ruby_package(const google_protobuf_FileOptions *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(100, 176)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_FileOptions_uninterpreted_option(const google_protobuf_FileOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(108, 192), len); }
+
+UPB_INLINE void google_protobuf_FileOptions_set_java_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 11);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_outer_classname(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 12);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(36, 48)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_optimize_for(google_protobuf_FileOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_multiple_files(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_go_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 13);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(44, 64)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_cc_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(17, 17)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(18, 18)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_py_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(19, 19)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_generate_equals_and_hash(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_deprecated(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(21, 21)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_java_string_check_utf8(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(22, 22)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_cc_enable_arenas(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(23, 23)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_objc_class_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 14);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(52, 80)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_csharp_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 15);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(60, 96)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_swift_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 16);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(68, 112)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_class_prefix(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 17);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(76, 128)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 18);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(84, 144)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_generic_services(google_protobuf_FileOptions *msg, bool value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_php_metadata_namespace(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 19);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(92, 160)) = value;
+}
+UPB_INLINE void google_protobuf_FileOptions_set_ruby_package(google_protobuf_FileOptions *msg, upb_strview value) {
+  _upb_sethas(msg, 20);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(100, 176)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FileOptions_mutable_uninterpreted_option(google_protobuf_FileOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(108, 192), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FileOptions_resize_uninterpreted_option(google_protobuf_FileOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(108, 192), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FileOptions_add_uninterpreted_option(google_protobuf_FileOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(108, 192), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.MessageOptions */
+
+UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_new(upb_arena *arena) {
+  return (google_protobuf_MessageOptions *)upb_msg_new(&google_protobuf_MessageOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_MessageOptions *google_protobuf_MessageOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MessageOptions *ret = google_protobuf_MessageOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MessageOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MessageOptions_serialize(const google_protobuf_MessageOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MessageOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MessageOptions_has_message_set_wire_format(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_MessageOptions_message_set_wire_format(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MessageOptions_no_standard_descriptor_accessor(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_deprecated(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_MessageOptions_deprecated(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+UPB_INLINE bool google_protobuf_MessageOptions_has_map_entry(const google_protobuf_MessageOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_MessageOptions_map_entry(const google_protobuf_MessageOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_MessageOptions_uninterpreted_option(const google_protobuf_MessageOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(8, 8), len); }
+
+UPB_INLINE void google_protobuf_MessageOptions_set_message_set_wire_format(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_no_standard_descriptor_accessor(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_deprecated(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+UPB_INLINE void google_protobuf_MessageOptions_set_map_entry(google_protobuf_MessageOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MessageOptions_mutable_uninterpreted_option(google_protobuf_MessageOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MessageOptions_resize_uninterpreted_option(google_protobuf_MessageOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(8, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MessageOptions_add_uninterpreted_option(google_protobuf_MessageOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.FieldOptions */
+
+UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_new(upb_arena *arena) {
+  return (google_protobuf_FieldOptions *)upb_msg_new(&google_protobuf_FieldOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_FieldOptions *google_protobuf_FieldOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FieldOptions *ret = google_protobuf_FieldOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FieldOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FieldOptions_serialize(const google_protobuf_FieldOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FieldOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_FieldOptions_has_ctype(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_FieldOptions_ctype(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_packed(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool google_protobuf_FieldOptions_packed(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_deprecated(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE bool google_protobuf_FieldOptions_deprecated(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_lazy(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE bool google_protobuf_FieldOptions_lazy(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_jstype(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_FieldOptions_jstype(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_FieldOptions_has_weak(const google_protobuf_FieldOptions *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE bool google_protobuf_FieldOptions_weak(const google_protobuf_FieldOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_FieldOptions_uninterpreted_option(const google_protobuf_FieldOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void google_protobuf_FieldOptions_set_ctype(google_protobuf_FieldOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_packed(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_deprecated(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(25, 25)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_lazy(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(26, 26)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_jstype(google_protobuf_FieldOptions *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_FieldOptions_set_weak(google_protobuf_FieldOptions *msg, bool value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(27, 27)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FieldOptions_mutable_uninterpreted_option(google_protobuf_FieldOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_FieldOptions_resize_uninterpreted_option(google_protobuf_FieldOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_FieldOptions_add_uninterpreted_option(google_protobuf_FieldOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.OneofOptions */
+
+UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_new(upb_arena *arena) {
+  return (google_protobuf_OneofOptions *)upb_msg_new(&google_protobuf_OneofOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_OneofOptions *google_protobuf_OneofOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_OneofOptions *ret = google_protobuf_OneofOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_OneofOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_OneofOptions_serialize(const google_protobuf_OneofOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_OneofOptions_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_OneofOptions_uninterpreted_option(const google_protobuf_OneofOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_OneofOptions_mutable_uninterpreted_option(google_protobuf_OneofOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_OneofOptions_resize_uninterpreted_option(google_protobuf_OneofOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_OneofOptions_add_uninterpreted_option(google_protobuf_OneofOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.EnumOptions */
+
+UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_new(upb_arena *arena) {
+  return (google_protobuf_EnumOptions *)upb_msg_new(&google_protobuf_EnumOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumOptions *google_protobuf_EnumOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumOptions *ret = google_protobuf_EnumOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumOptions_serialize(const google_protobuf_EnumOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumOptions_has_allow_alias(const google_protobuf_EnumOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_EnumOptions_allow_alias(const google_protobuf_EnumOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool google_protobuf_EnumOptions_has_deprecated(const google_protobuf_EnumOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_EnumOptions_deprecated(const google_protobuf_EnumOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_EnumOptions_uninterpreted_option(const google_protobuf_EnumOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_EnumOptions_set_allow_alias(google_protobuf_EnumOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void google_protobuf_EnumOptions_set_deprecated(google_protobuf_EnumOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumOptions_mutable_uninterpreted_option(google_protobuf_EnumOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumOptions_resize_uninterpreted_option(google_protobuf_EnumOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumOptions_add_uninterpreted_option(google_protobuf_EnumOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.EnumValueOptions */
+
+UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_new(upb_arena *arena) {
+  return (google_protobuf_EnumValueOptions *)upb_msg_new(&google_protobuf_EnumValueOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_EnumValueOptions *google_protobuf_EnumValueOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_EnumValueOptions *ret = google_protobuf_EnumValueOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_EnumValueOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_EnumValueOptions_serialize(const google_protobuf_EnumValueOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_EnumValueOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_EnumValueOptions_has_deprecated(const google_protobuf_EnumValueOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_EnumValueOptions_deprecated(const google_protobuf_EnumValueOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_EnumValueOptions_uninterpreted_option(const google_protobuf_EnumValueOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_EnumValueOptions_set_deprecated(google_protobuf_EnumValueOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumValueOptions_mutable_uninterpreted_option(google_protobuf_EnumValueOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_EnumValueOptions_resize_uninterpreted_option(google_protobuf_EnumValueOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_EnumValueOptions_add_uninterpreted_option(google_protobuf_EnumValueOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.ServiceOptions */
+
+UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_new(upb_arena *arena) {
+  return (google_protobuf_ServiceOptions *)upb_msg_new(&google_protobuf_ServiceOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_ServiceOptions *google_protobuf_ServiceOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ServiceOptions *ret = google_protobuf_ServiceOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ServiceOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ServiceOptions_serialize(const google_protobuf_ServiceOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ServiceOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_ServiceOptions_has_deprecated(const google_protobuf_ServiceOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_ServiceOptions_deprecated(const google_protobuf_ServiceOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_ServiceOptions_uninterpreted_option(const google_protobuf_ServiceOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE void google_protobuf_ServiceOptions_set_deprecated(google_protobuf_ServiceOptions *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ServiceOptions_mutable_uninterpreted_option(google_protobuf_ServiceOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_ServiceOptions_resize_uninterpreted_option(google_protobuf_ServiceOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_ServiceOptions_add_uninterpreted_option(google_protobuf_ServiceOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.MethodOptions */
+
+UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_new(upb_arena *arena) {
+  return (google_protobuf_MethodOptions *)upb_msg_new(&google_protobuf_MethodOptions_msginit, arena);
+}
+UPB_INLINE google_protobuf_MethodOptions *google_protobuf_MethodOptions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_MethodOptions *ret = google_protobuf_MethodOptions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_MethodOptions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_MethodOptions_serialize(const google_protobuf_MethodOptions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_MethodOptions_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_MethodOptions_has_deprecated(const google_protobuf_MethodOptions *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool google_protobuf_MethodOptions_deprecated(const google_protobuf_MethodOptions *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_MethodOptions_has_idempotency_level(const google_protobuf_MethodOptions *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_MethodOptions_idempotency_level(const google_protobuf_MethodOptions *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE const google_protobuf_UninterpretedOption* const* google_protobuf_MethodOptions_uninterpreted_option(const google_protobuf_MethodOptions *msg, size_t *len) { return (const google_protobuf_UninterpretedOption* const*)_upb_array_accessor(msg, UPB_SIZE(20, 24), len); }
+
+UPB_INLINE void google_protobuf_MethodOptions_set_deprecated(google_protobuf_MethodOptions *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_MethodOptions_set_idempotency_level(google_protobuf_MethodOptions *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MethodOptions_mutable_uninterpreted_option(google_protobuf_MethodOptions *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 24), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption** google_protobuf_MethodOptions_resize_uninterpreted_option(google_protobuf_MethodOptions *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption**)_upb_array_resize_accessor(msg, UPB_SIZE(20, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption* google_protobuf_MethodOptions_add_uninterpreted_option(google_protobuf_MethodOptions *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption* sub = (struct google_protobuf_UninterpretedOption*)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.UninterpretedOption */
+
+UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_new(upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption *)upb_msg_new(&google_protobuf_UninterpretedOption_msginit, arena);
+}
+UPB_INLINE google_protobuf_UninterpretedOption *google_protobuf_UninterpretedOption_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UninterpretedOption *ret = google_protobuf_UninterpretedOption_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UninterpretedOption_serialize(const google_protobuf_UninterpretedOption *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_UninterpretedOption_NamePart* const* google_protobuf_UninterpretedOption_name(const google_protobuf_UninterpretedOption *msg, size_t *len) { return (const google_protobuf_UninterpretedOption_NamePart* const*)_upb_array_accessor(msg, UPB_SIZE(56, 80), len); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_identifier_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_identifier_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_positive_int_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t google_protobuf_UninterpretedOption_positive_int_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_negative_int_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t google_protobuf_UninterpretedOption_negative_int_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_double_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE double google_protobuf_UninterpretedOption_double_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_string_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_string_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_has_aggregate_value(const google_protobuf_UninterpretedOption *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_aggregate_value(const google_protobuf_UninterpretedOption *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart** google_protobuf_UninterpretedOption_mutable_name(google_protobuf_UninterpretedOption *msg, size_t *len) {
+  return (google_protobuf_UninterpretedOption_NamePart**)_upb_array_mutable_accessor(msg, UPB_SIZE(56, 80), len);
+}
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart** google_protobuf_UninterpretedOption_resize_name(google_protobuf_UninterpretedOption *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption_NamePart**)_upb_array_resize_accessor(msg, UPB_SIZE(56, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_UninterpretedOption_NamePart* google_protobuf_UninterpretedOption_add_name(google_protobuf_UninterpretedOption *msg, upb_arena *arena) {
+  struct google_protobuf_UninterpretedOption_NamePart* sub = (struct google_protobuf_UninterpretedOption_NamePart*)upb_msg_new(&google_protobuf_UninterpretedOption_NamePart_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(56, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_identifier_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_positive_int_value(google_protobuf_UninterpretedOption *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_negative_int_value(google_protobuf_UninterpretedOption *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_double_value(google_protobuf_UninterpretedOption *msg, double value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_string_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_set_aggregate_value(google_protobuf_UninterpretedOption *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+
+/* google.protobuf.UninterpretedOption.NamePart */
+
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_new(upb_arena *arena) {
+  return (google_protobuf_UninterpretedOption_NamePart *)upb_msg_new(&google_protobuf_UninterpretedOption_NamePart_msginit, arena);
+}
+UPB_INLINE google_protobuf_UninterpretedOption_NamePart *google_protobuf_UninterpretedOption_NamePart_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UninterpretedOption_NamePart *ret = google_protobuf_UninterpretedOption_NamePart_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UninterpretedOption_NamePart_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UninterpretedOption_NamePart_serialize(const google_protobuf_UninterpretedOption_NamePart *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UninterpretedOption_NamePart_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_has_name_part(const google_protobuf_UninterpretedOption_NamePart *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_UninterpretedOption_NamePart_name_part(const google_protobuf_UninterpretedOption_NamePart *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_has_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool google_protobuf_UninterpretedOption_NamePart_is_extension(const google_protobuf_UninterpretedOption_NamePart *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void google_protobuf_UninterpretedOption_NamePart_set_name_part(google_protobuf_UninterpretedOption_NamePart *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_UninterpretedOption_NamePart_set_is_extension(google_protobuf_UninterpretedOption_NamePart *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* google.protobuf.SourceCodeInfo */
+
+UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_new(upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo *)upb_msg_new(&google_protobuf_SourceCodeInfo_msginit, arena);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo *google_protobuf_SourceCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_SourceCodeInfo *ret = google_protobuf_SourceCodeInfo_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_SourceCodeInfo_serialize(const google_protobuf_SourceCodeInfo *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_SourceCodeInfo_Location* const* google_protobuf_SourceCodeInfo_location(const google_protobuf_SourceCodeInfo *msg, size_t *len) { return (const google_protobuf_SourceCodeInfo_Location* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_SourceCodeInfo_Location** google_protobuf_SourceCodeInfo_mutable_location(google_protobuf_SourceCodeInfo *msg, size_t *len) {
+  return (google_protobuf_SourceCodeInfo_Location**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo_Location** google_protobuf_SourceCodeInfo_resize_location(google_protobuf_SourceCodeInfo *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo_Location**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_SourceCodeInfo_Location* google_protobuf_SourceCodeInfo_add_location(google_protobuf_SourceCodeInfo *msg, upb_arena *arena) {
+  struct google_protobuf_SourceCodeInfo_Location* sub = (struct google_protobuf_SourceCodeInfo_Location*)upb_msg_new(&google_protobuf_SourceCodeInfo_Location_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.SourceCodeInfo.Location */
+
+UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_new(upb_arena *arena) {
+  return (google_protobuf_SourceCodeInfo_Location *)upb_msg_new(&google_protobuf_SourceCodeInfo_Location_msginit, arena);
+}
+UPB_INLINE google_protobuf_SourceCodeInfo_Location *google_protobuf_SourceCodeInfo_Location_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_SourceCodeInfo_Location *ret = google_protobuf_SourceCodeInfo_Location_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_SourceCodeInfo_Location_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_SourceCodeInfo_Location_serialize(const google_protobuf_SourceCodeInfo_Location *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_SourceCodeInfo_Location_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* google_protobuf_SourceCodeInfo_Location_path(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(20, 40), len); }
+UPB_INLINE int32_t const* google_protobuf_SourceCodeInfo_Location_span(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_has_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE upb_strview google_protobuf_SourceCodeInfo_Location_leading_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_has_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE upb_strview google_protobuf_SourceCodeInfo_Location_trailing_comments(const google_protobuf_SourceCodeInfo_Location *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)); }
+UPB_INLINE upb_strview const* google_protobuf_SourceCodeInfo_Location_leading_detached_comments(const google_protobuf_SourceCodeInfo_Location *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_mutable_path(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 40), len);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_resize_path(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 40), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_path(google_protobuf_SourceCodeInfo_Location *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 40), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_mutable_span(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE int32_t* google_protobuf_SourceCodeInfo_Location_resize_span(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_span(google_protobuf_SourceCodeInfo_Location *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_SourceCodeInfo_Location_set_leading_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void google_protobuf_SourceCodeInfo_Location_set_trailing_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE upb_strview* google_protobuf_SourceCodeInfo_Location_mutable_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE upb_strview* google_protobuf_SourceCodeInfo_Location_resize_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool google_protobuf_SourceCodeInfo_Location_add_leading_detached_comments(google_protobuf_SourceCodeInfo_Location *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* google.protobuf.GeneratedCodeInfo */
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_new(upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_msginit, arena);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo *google_protobuf_GeneratedCodeInfo_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_GeneratedCodeInfo *ret = google_protobuf_GeneratedCodeInfo_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_GeneratedCodeInfo_serialize(const google_protobuf_GeneratedCodeInfo *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_GeneratedCodeInfo_Annotation* const* google_protobuf_GeneratedCodeInfo_annotation(const google_protobuf_GeneratedCodeInfo *msg, size_t *len) { return (const google_protobuf_GeneratedCodeInfo_Annotation* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation** google_protobuf_GeneratedCodeInfo_mutable_annotation(google_protobuf_GeneratedCodeInfo *msg, size_t *len) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation** google_protobuf_GeneratedCodeInfo_resize_annotation(google_protobuf_GeneratedCodeInfo *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_GeneratedCodeInfo_Annotation* google_protobuf_GeneratedCodeInfo_add_annotation(google_protobuf_GeneratedCodeInfo *msg, upb_arena *arena) {
+  struct google_protobuf_GeneratedCodeInfo_Annotation* sub = (struct google_protobuf_GeneratedCodeInfo_Annotation*)upb_msg_new(&google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.GeneratedCodeInfo.Annotation */
+
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_new(upb_arena *arena) {
+  return (google_protobuf_GeneratedCodeInfo_Annotation *)upb_msg_new(&google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena);
+}
+UPB_INLINE google_protobuf_GeneratedCodeInfo_Annotation *google_protobuf_GeneratedCodeInfo_Annotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_GeneratedCodeInfo_Annotation *ret = google_protobuf_GeneratedCodeInfo_Annotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_GeneratedCodeInfo_Annotation_serialize(const google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_GeneratedCodeInfo_Annotation_msginit, arena, len);
+}
+
+UPB_INLINE int32_t const* google_protobuf_GeneratedCodeInfo_Annotation_path(const google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(20, 32), len); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE upb_strview google_protobuf_GeneratedCodeInfo_Annotation_source_file(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t google_protobuf_GeneratedCodeInfo_Annotation_begin(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_has_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t google_protobuf_GeneratedCodeInfo_Annotation_end(const google_protobuf_GeneratedCodeInfo_Annotation *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE int32_t* google_protobuf_GeneratedCodeInfo_Annotation_mutable_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(20, 32), len);
+}
+UPB_INLINE int32_t* google_protobuf_GeneratedCodeInfo_Annotation_resize_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(20, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool google_protobuf_GeneratedCodeInfo_Annotation_add_path(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(20, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_source_file(google_protobuf_GeneratedCodeInfo_Annotation *msg, upb_strview value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_begin(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void google_protobuf_GeneratedCodeInfo_Annotation_set_end(google_protobuf_GeneratedCodeInfo_Annotation *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_DESCRIPTOR_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.c
new file mode 100644
index 0000000..012daed
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.c	
@@ -0,0 +1,43 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/duration.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field google_protobuf_Duration__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_Duration_msginit = {
+  NULL,
+  &google_protobuf_Duration__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.h
new file mode 100644
index 0000000..685c7e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/duration.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/duration.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Duration;
+typedef struct google_protobuf_Duration google_protobuf_Duration;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+
+
+/* google.protobuf.Duration */
+
+UPB_INLINE google_protobuf_Duration *google_protobuf_Duration_new(upb_arena *arena) {
+  return (google_protobuf_Duration *)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+}
+UPB_INLINE google_protobuf_Duration *google_protobuf_Duration_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Duration *ret = google_protobuf_Duration_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Duration_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Duration_serialize(const google_protobuf_Duration *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Duration_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Duration_seconds(const google_protobuf_Duration *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t google_protobuf_Duration_nanos(const google_protobuf_Duration *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_Duration_set_seconds(google_protobuf_Duration *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Duration_set_nanos(google_protobuf_Duration *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_DURATION_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.c
new file mode 100644
index 0000000..d789ff5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.c	
@@ -0,0 +1,38 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/empty.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/empty.upb.h"
+#else
+  #include  "google/protobuf/empty.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+const upb_msglayout google_protobuf_Empty_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.h
new file mode 100644
index 0000000..5704f01
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/empty.upb.h	
@@ -0,0 +1,74 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/empty.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Empty;
+typedef struct google_protobuf_Empty google_protobuf_Empty;
+extern const upb_msglayout google_protobuf_Empty_msginit;
+
+
+/* google.protobuf.Empty */
+
+UPB_INLINE google_protobuf_Empty *google_protobuf_Empty_new(upb_arena *arena) {
+  return (google_protobuf_Empty *)upb_msg_new(&google_protobuf_Empty_msginit, arena);
+}
+UPB_INLINE google_protobuf_Empty *google_protobuf_Empty_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Empty *ret = google_protobuf_Empty_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Empty_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Empty_serialize(const google_protobuf_Empty *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Empty_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_EMPTY_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.c
new file mode 100644
index 0000000..0528d0b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.c	
@@ -0,0 +1,95 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/struct.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/struct.upb.h"
+#else
+  #include  "google/protobuf/struct.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const google_protobuf_Struct_submsgs[1] = {
+  &google_protobuf_Struct_FieldsEntry_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_Struct__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_Struct_msginit = {
+  &google_protobuf_Struct_submsgs[0],
+  &google_protobuf_Struct__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout *const google_protobuf_Struct_FieldsEntry_submsgs[1] = {
+  &google_protobuf_Value_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_Struct_FieldsEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout google_protobuf_Struct_FieldsEntry_msginit = {
+  &google_protobuf_Struct_FieldsEntry_submsgs[0],
+  &google_protobuf_Struct_FieldsEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const google_protobuf_Value_submsgs[2] = {
+  &google_protobuf_ListValue_msginit,
+  &google_protobuf_Struct_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_Value__fields[6] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 14, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 1, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 9, 1},
+  {4, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 8, 1},
+  {5, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 1, 11, 1},
+  {6, UPB_SIZE(0, 0), UPB_SIZE(-9, -17), 0, 11, 1},
+};
+
+const upb_msglayout google_protobuf_Value_msginit = {
+  &google_protobuf_Value_submsgs[0],
+  &google_protobuf_Value__fields[0],
+  UPB_SIZE(16, 32), 6, false,
+};
+
+static const upb_msglayout *const google_protobuf_ListValue_submsgs[1] = {
+  &google_protobuf_Value_msginit,
+};
+
+static const upb_msglayout_field google_protobuf_ListValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_protobuf_ListValue_msginit = {
+  &google_protobuf_ListValue_submsgs[0],
+  &google_protobuf_ListValue__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.h
new file mode 100644
index 0000000..d0eabd9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/struct.upb.h	
@@ -0,0 +1,239 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/struct.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Struct;
+struct google_protobuf_Struct_FieldsEntry;
+struct google_protobuf_Value;
+struct google_protobuf_ListValue;
+typedef struct google_protobuf_Struct google_protobuf_Struct;
+typedef struct google_protobuf_Struct_FieldsEntry google_protobuf_Struct_FieldsEntry;
+typedef struct google_protobuf_Value google_protobuf_Value;
+typedef struct google_protobuf_ListValue google_protobuf_ListValue;
+extern const upb_msglayout google_protobuf_Struct_msginit;
+extern const upb_msglayout google_protobuf_Struct_FieldsEntry_msginit;
+extern const upb_msglayout google_protobuf_Value_msginit;
+extern const upb_msglayout google_protobuf_ListValue_msginit;
+
+typedef enum {
+  google_protobuf_NULL_VALUE = 0
+} google_protobuf_NullValue;
+
+
+/* google.protobuf.Struct */
+
+UPB_INLINE google_protobuf_Struct *google_protobuf_Struct_new(upb_arena *arena) {
+  return (google_protobuf_Struct *)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+}
+UPB_INLINE google_protobuf_Struct *google_protobuf_Struct_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Struct *ret = google_protobuf_Struct_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Struct_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Struct_serialize(const google_protobuf_Struct *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Struct_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_Struct_FieldsEntry* const* google_protobuf_Struct_fields(const google_protobuf_Struct *msg, size_t *len) { return (const google_protobuf_Struct_FieldsEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_Struct_FieldsEntry** google_protobuf_Struct_mutable_fields(google_protobuf_Struct *msg, size_t *len) {
+  return (google_protobuf_Struct_FieldsEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_Struct_FieldsEntry** google_protobuf_Struct_resize_fields(google_protobuf_Struct *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_Struct_FieldsEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Struct_FieldsEntry* google_protobuf_Struct_add_fields(google_protobuf_Struct *msg, upb_arena *arena) {
+  struct google_protobuf_Struct_FieldsEntry* sub = (struct google_protobuf_Struct_FieldsEntry*)upb_msg_new(&google_protobuf_Struct_FieldsEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* google.protobuf.Struct.FieldsEntry */
+
+UPB_INLINE google_protobuf_Struct_FieldsEntry *google_protobuf_Struct_FieldsEntry_new(upb_arena *arena) {
+  return (google_protobuf_Struct_FieldsEntry *)upb_msg_new(&google_protobuf_Struct_FieldsEntry_msginit, arena);
+}
+UPB_INLINE google_protobuf_Struct_FieldsEntry *google_protobuf_Struct_FieldsEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Struct_FieldsEntry *ret = google_protobuf_Struct_FieldsEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Struct_FieldsEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Struct_FieldsEntry_serialize(const google_protobuf_Struct_FieldsEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Struct_FieldsEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_Struct_FieldsEntry_key(const google_protobuf_Struct_FieldsEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const google_protobuf_Value* google_protobuf_Struct_FieldsEntry_value(const google_protobuf_Struct_FieldsEntry *msg) { return UPB_FIELD_AT(msg, const google_protobuf_Value*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void google_protobuf_Struct_FieldsEntry_set_key(google_protobuf_Struct_FieldsEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Struct_FieldsEntry_set_value(google_protobuf_Struct_FieldsEntry *msg, google_protobuf_Value* value) {
+  UPB_FIELD_AT(msg, google_protobuf_Value*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Value* google_protobuf_Struct_FieldsEntry_mutable_value(google_protobuf_Struct_FieldsEntry *msg, upb_arena *arena) {
+  struct google_protobuf_Value* sub = (struct google_protobuf_Value*)google_protobuf_Struct_FieldsEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Value*)upb_msg_new(&google_protobuf_Value_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Struct_FieldsEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.Value */
+
+UPB_INLINE google_protobuf_Value *google_protobuf_Value_new(upb_arena *arena) {
+  return (google_protobuf_Value *)upb_msg_new(&google_protobuf_Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Value *google_protobuf_Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Value *ret = google_protobuf_Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Value_serialize(const google_protobuf_Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Value_msginit, arena, len);
+}
+
+typedef enum {
+  google_protobuf_Value_kind_null_value = 1,
+  google_protobuf_Value_kind_number_value = 2,
+  google_protobuf_Value_kind_string_value = 3,
+  google_protobuf_Value_kind_bool_value = 4,
+  google_protobuf_Value_kind_struct_value = 5,
+  google_protobuf_Value_kind_list_value = 6,
+  google_protobuf_Value_kind_NOT_SET = 0
+} google_protobuf_Value_kind_oneofcases;
+UPB_INLINE google_protobuf_Value_kind_oneofcases google_protobuf_Value_kind_case(const google_protobuf_Value* msg) { return (google_protobuf_Value_kind_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 16)); }
+
+UPB_INLINE bool google_protobuf_Value_has_null_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 1); }
+UPB_INLINE int32_t google_protobuf_Value_null_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 1, google_protobuf_NULL_VALUE); }
+UPB_INLINE bool google_protobuf_Value_has_number_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 2); }
+UPB_INLINE double google_protobuf_Value_number_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, double, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 2, 0); }
+UPB_INLINE bool google_protobuf_Value_has_string_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 3); }
+UPB_INLINE upb_strview google_protobuf_Value_string_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 3, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool google_protobuf_Value_has_bool_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 4); }
+UPB_INLINE bool google_protobuf_Value_bool_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 4, false); }
+UPB_INLINE bool google_protobuf_Value_has_struct_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 5); }
+UPB_INLINE const google_protobuf_Struct* google_protobuf_Value_struct_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, const google_protobuf_Struct*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 5, NULL); }
+UPB_INLINE bool google_protobuf_Value_has_list_value(const google_protobuf_Value *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(8, 16), 6); }
+UPB_INLINE const google_protobuf_ListValue* google_protobuf_Value_list_value(const google_protobuf_Value *msg) { return UPB_READ_ONEOF(msg, const google_protobuf_ListValue*, UPB_SIZE(0, 0), UPB_SIZE(8, 16), 6, NULL); }
+
+UPB_INLINE void google_protobuf_Value_set_null_value(google_protobuf_Value *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 1);
+}
+UPB_INLINE void google_protobuf_Value_set_number_value(google_protobuf_Value *msg, double value) {
+  UPB_WRITE_ONEOF(msg, double, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 2);
+}
+UPB_INLINE void google_protobuf_Value_set_string_value(google_protobuf_Value *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 3);
+}
+UPB_INLINE void google_protobuf_Value_set_bool_value(google_protobuf_Value *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 4);
+}
+UPB_INLINE void google_protobuf_Value_set_struct_value(google_protobuf_Value *msg, google_protobuf_Struct* value) {
+  UPB_WRITE_ONEOF(msg, google_protobuf_Struct*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 5);
+}
+UPB_INLINE struct google_protobuf_Struct* google_protobuf_Value_mutable_struct_value(google_protobuf_Value *msg, upb_arena *arena) {
+  struct google_protobuf_Struct* sub = (struct google_protobuf_Struct*)google_protobuf_Value_struct_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Struct*)upb_msg_new(&google_protobuf_Struct_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Value_set_struct_value(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void google_protobuf_Value_set_list_value(google_protobuf_Value *msg, google_protobuf_ListValue* value) {
+  UPB_WRITE_ONEOF(msg, google_protobuf_ListValue*, UPB_SIZE(0, 0), value, UPB_SIZE(8, 16), 6);
+}
+UPB_INLINE struct google_protobuf_ListValue* google_protobuf_Value_mutable_list_value(google_protobuf_Value *msg, upb_arena *arena) {
+  struct google_protobuf_ListValue* sub = (struct google_protobuf_ListValue*)google_protobuf_Value_list_value(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_ListValue*)upb_msg_new(&google_protobuf_ListValue_msginit, arena);
+    if (!sub) return NULL;
+    google_protobuf_Value_set_list_value(msg, sub);
+  }
+  return sub;
+}
+
+/* google.protobuf.ListValue */
+
+UPB_INLINE google_protobuf_ListValue *google_protobuf_ListValue_new(upb_arena *arena) {
+  return (google_protobuf_ListValue *)upb_msg_new(&google_protobuf_ListValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_ListValue *google_protobuf_ListValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_ListValue *ret = google_protobuf_ListValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_ListValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_ListValue_serialize(const google_protobuf_ListValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_ListValue_msginit, arena, len);
+}
+
+UPB_INLINE const google_protobuf_Value* const* google_protobuf_ListValue_values(const google_protobuf_ListValue *msg, size_t *len) { return (const google_protobuf_Value* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE google_protobuf_Value** google_protobuf_ListValue_mutable_values(google_protobuf_ListValue *msg, size_t *len) {
+  return (google_protobuf_Value**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE google_protobuf_Value** google_protobuf_ListValue_resize_values(google_protobuf_ListValue *msg, size_t len, upb_arena *arena) {
+  return (google_protobuf_Value**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Value* google_protobuf_ListValue_add_values(google_protobuf_ListValue *msg, upb_arena *arena) {
+  struct google_protobuf_Value* sub = (struct google_protobuf_Value*)upb_msg_new(&google_protobuf_Value_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_STRUCT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.c
new file mode 100644
index 0000000..4ff07db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.c	
@@ -0,0 +1,43 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/timestamp.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/timestamp.upb.h"
+#else
+  #include  "google/protobuf/timestamp.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field google_protobuf_Timestamp__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_Timestamp_msginit = {
+  NULL,
+  &google_protobuf_Timestamp__fields[0],
+  UPB_SIZE(16, 16), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h
new file mode 100644
index 0000000..1eb7de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/timestamp.upb.h	
@@ -0,0 +1,82 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/timestamp.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_Timestamp;
+typedef struct google_protobuf_Timestamp google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+
+/* google.protobuf.Timestamp */
+
+UPB_INLINE google_protobuf_Timestamp *google_protobuf_Timestamp_new(upb_arena *arena) {
+  return (google_protobuf_Timestamp *)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+}
+UPB_INLINE google_protobuf_Timestamp *google_protobuf_Timestamp_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Timestamp *ret = google_protobuf_Timestamp_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Timestamp_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Timestamp_serialize(const google_protobuf_Timestamp *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Timestamp_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Timestamp_seconds(const google_protobuf_Timestamp *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int32_t google_protobuf_Timestamp_nanos(const google_protobuf_Timestamp *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void google_protobuf_Timestamp_set_seconds(google_protobuf_Timestamp *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_protobuf_Timestamp_set_nanos(google_protobuf_Timestamp *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_TIMESTAMP_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.c
new file mode 100644
index 0000000..00ddd2e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.c	
@@ -0,0 +1,122 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/wrappers.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/wrappers.upb.h"
+#else
+  #include  "google/protobuf/wrappers.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field google_protobuf_DoubleValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 1, 1},
+};
+
+const upb_msglayout google_protobuf_DoubleValue_msginit = {
+  NULL,
+  &google_protobuf_DoubleValue__fields[0],
+  UPB_SIZE(8, 8), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_FloatValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 2, 1},
+};
+
+const upb_msglayout google_protobuf_FloatValue_msginit = {
+  NULL,
+  &google_protobuf_FloatValue__fields[0],
+  UPB_SIZE(4, 4), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_Int64Value__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 3, 1},
+};
+
+const upb_msglayout google_protobuf_Int64Value_msginit = {
+  NULL,
+  &google_protobuf_Int64Value__fields[0],
+  UPB_SIZE(8, 8), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_UInt64Value__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 4, 1},
+};
+
+const upb_msglayout google_protobuf_UInt64Value_msginit = {
+  NULL,
+  &google_protobuf_UInt64Value__fields[0],
+  UPB_SIZE(8, 8), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_Int32Value__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 5, 1},
+};
+
+const upb_msglayout google_protobuf_Int32Value_msginit = {
+  NULL,
+  &google_protobuf_Int32Value__fields[0],
+  UPB_SIZE(4, 4), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_UInt32Value__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+};
+
+const upb_msglayout google_protobuf_UInt32Value_msginit = {
+  NULL,
+  &google_protobuf_UInt32Value__fields[0],
+  UPB_SIZE(4, 4), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_BoolValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 8, 1},
+};
+
+const upb_msglayout google_protobuf_BoolValue_msginit = {
+  NULL,
+  &google_protobuf_BoolValue__fields[0],
+  UPB_SIZE(1, 1), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_StringValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout google_protobuf_StringValue_msginit = {
+  NULL,
+  &google_protobuf_StringValue__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field google_protobuf_BytesValue__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 12, 1},
+};
+
+const upb_msglayout google_protobuf_BytesValue_msginit = {
+  NULL,
+  &google_protobuf_BytesValue__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h
new file mode 100644
index 0000000..4f2a405
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/protobuf/wrappers.upb.h	
@@ -0,0 +1,262 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/protobuf/wrappers.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_
+#define GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_protobuf_DoubleValue;
+struct google_protobuf_FloatValue;
+struct google_protobuf_Int64Value;
+struct google_protobuf_UInt64Value;
+struct google_protobuf_Int32Value;
+struct google_protobuf_UInt32Value;
+struct google_protobuf_BoolValue;
+struct google_protobuf_StringValue;
+struct google_protobuf_BytesValue;
+typedef struct google_protobuf_DoubleValue google_protobuf_DoubleValue;
+typedef struct google_protobuf_FloatValue google_protobuf_FloatValue;
+typedef struct google_protobuf_Int64Value google_protobuf_Int64Value;
+typedef struct google_protobuf_UInt64Value google_protobuf_UInt64Value;
+typedef struct google_protobuf_Int32Value google_protobuf_Int32Value;
+typedef struct google_protobuf_UInt32Value google_protobuf_UInt32Value;
+typedef struct google_protobuf_BoolValue google_protobuf_BoolValue;
+typedef struct google_protobuf_StringValue google_protobuf_StringValue;
+typedef struct google_protobuf_BytesValue google_protobuf_BytesValue;
+extern const upb_msglayout google_protobuf_DoubleValue_msginit;
+extern const upb_msglayout google_protobuf_FloatValue_msginit;
+extern const upb_msglayout google_protobuf_Int64Value_msginit;
+extern const upb_msglayout google_protobuf_UInt64Value_msginit;
+extern const upb_msglayout google_protobuf_Int32Value_msginit;
+extern const upb_msglayout google_protobuf_UInt32Value_msginit;
+extern const upb_msglayout google_protobuf_BoolValue_msginit;
+extern const upb_msglayout google_protobuf_StringValue_msginit;
+extern const upb_msglayout google_protobuf_BytesValue_msginit;
+
+
+/* google.protobuf.DoubleValue */
+
+UPB_INLINE google_protobuf_DoubleValue *google_protobuf_DoubleValue_new(upb_arena *arena) {
+  return (google_protobuf_DoubleValue *)upb_msg_new(&google_protobuf_DoubleValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_DoubleValue *google_protobuf_DoubleValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_DoubleValue *ret = google_protobuf_DoubleValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_DoubleValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_DoubleValue_serialize(const google_protobuf_DoubleValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_DoubleValue_msginit, arena, len);
+}
+
+UPB_INLINE double google_protobuf_DoubleValue_value(const google_protobuf_DoubleValue *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_DoubleValue_set_value(google_protobuf_DoubleValue *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.FloatValue */
+
+UPB_INLINE google_protobuf_FloatValue *google_protobuf_FloatValue_new(upb_arena *arena) {
+  return (google_protobuf_FloatValue *)upb_msg_new(&google_protobuf_FloatValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_FloatValue *google_protobuf_FloatValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_FloatValue *ret = google_protobuf_FloatValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_FloatValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_FloatValue_serialize(const google_protobuf_FloatValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_FloatValue_msginit, arena, len);
+}
+
+UPB_INLINE float google_protobuf_FloatValue_value(const google_protobuf_FloatValue *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_FloatValue_set_value(google_protobuf_FloatValue *msg, float value) {
+  UPB_FIELD_AT(msg, float, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.Int64Value */
+
+UPB_INLINE google_protobuf_Int64Value *google_protobuf_Int64Value_new(upb_arena *arena) {
+  return (google_protobuf_Int64Value *)upb_msg_new(&google_protobuf_Int64Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Int64Value *google_protobuf_Int64Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Int64Value *ret = google_protobuf_Int64Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Int64Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Int64Value_serialize(const google_protobuf_Int64Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Int64Value_msginit, arena, len);
+}
+
+UPB_INLINE int64_t google_protobuf_Int64Value_value(const google_protobuf_Int64Value *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_Int64Value_set_value(google_protobuf_Int64Value *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.UInt64Value */
+
+UPB_INLINE google_protobuf_UInt64Value *google_protobuf_UInt64Value_new(upb_arena *arena) {
+  return (google_protobuf_UInt64Value *)upb_msg_new(&google_protobuf_UInt64Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_UInt64Value *google_protobuf_UInt64Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UInt64Value *ret = google_protobuf_UInt64Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UInt64Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UInt64Value_serialize(const google_protobuf_UInt64Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UInt64Value_msginit, arena, len);
+}
+
+UPB_INLINE uint64_t google_protobuf_UInt64Value_value(const google_protobuf_UInt64Value *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_UInt64Value_set_value(google_protobuf_UInt64Value *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.Int32Value */
+
+UPB_INLINE google_protobuf_Int32Value *google_protobuf_Int32Value_new(upb_arena *arena) {
+  return (google_protobuf_Int32Value *)upb_msg_new(&google_protobuf_Int32Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_Int32Value *google_protobuf_Int32Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_Int32Value *ret = google_protobuf_Int32Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_Int32Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_Int32Value_serialize(const google_protobuf_Int32Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_Int32Value_msginit, arena, len);
+}
+
+UPB_INLINE int32_t google_protobuf_Int32Value_value(const google_protobuf_Int32Value *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_Int32Value_set_value(google_protobuf_Int32Value *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.UInt32Value */
+
+UPB_INLINE google_protobuf_UInt32Value *google_protobuf_UInt32Value_new(upb_arena *arena) {
+  return (google_protobuf_UInt32Value *)upb_msg_new(&google_protobuf_UInt32Value_msginit, arena);
+}
+UPB_INLINE google_protobuf_UInt32Value *google_protobuf_UInt32Value_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_UInt32Value *ret = google_protobuf_UInt32Value_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_UInt32Value_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_UInt32Value_serialize(const google_protobuf_UInt32Value *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_UInt32Value_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t google_protobuf_UInt32Value_value(const google_protobuf_UInt32Value *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_UInt32Value_set_value(google_protobuf_UInt32Value *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.BoolValue */
+
+UPB_INLINE google_protobuf_BoolValue *google_protobuf_BoolValue_new(upb_arena *arena) {
+  return (google_protobuf_BoolValue *)upb_msg_new(&google_protobuf_BoolValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_BoolValue *google_protobuf_BoolValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_BoolValue *ret = google_protobuf_BoolValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_BoolValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_BoolValue_serialize(const google_protobuf_BoolValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_BoolValue_msginit, arena, len);
+}
+
+UPB_INLINE bool google_protobuf_BoolValue_value(const google_protobuf_BoolValue *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_BoolValue_set_value(google_protobuf_BoolValue *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.StringValue */
+
+UPB_INLINE google_protobuf_StringValue *google_protobuf_StringValue_new(upb_arena *arena) {
+  return (google_protobuf_StringValue *)upb_msg_new(&google_protobuf_StringValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_StringValue *google_protobuf_StringValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_StringValue *ret = google_protobuf_StringValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_StringValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_StringValue_serialize(const google_protobuf_StringValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_StringValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_StringValue_value(const google_protobuf_StringValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_StringValue_set_value(google_protobuf_StringValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* google.protobuf.BytesValue */
+
+UPB_INLINE google_protobuf_BytesValue *google_protobuf_BytesValue_new(upb_arena *arena) {
+  return (google_protobuf_BytesValue *)upb_msg_new(&google_protobuf_BytesValue_msginit, arena);
+}
+UPB_INLINE google_protobuf_BytesValue *google_protobuf_BytesValue_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_protobuf_BytesValue *ret = google_protobuf_BytesValue_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_protobuf_BytesValue_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_protobuf_BytesValue_serialize(const google_protobuf_BytesValue *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_protobuf_BytesValue_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview google_protobuf_BytesValue_value(const google_protobuf_BytesValue *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void google_protobuf_BytesValue_set_value(google_protobuf_BytesValue *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_PROTOBUF_WRAPPERS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.c
new file mode 100644
index 0000000..b07b61e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.c	
@@ -0,0 +1,53 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/rpc/status.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/rpc/status.upb.h"
+#else
+  #include  "google/rpc/status.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/any.upb.h"
+#else
+  #include  "google/protobuf/any.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const google_rpc_Status_submsgs[1] = {
+  &google_protobuf_Any_msginit,
+};
+
+static const upb_msglayout_field google_rpc_Status__fields[3] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 5, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 9, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 3},
+};
+
+const upb_msglayout google_rpc_Status_msginit = {
+  &google_rpc_Status_submsgs[0],
+  &google_rpc_Status__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.h
new file mode 100644
index 0000000..7cccb8c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/google/rpc/status.upb.h	
@@ -0,0 +1,98 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     google/rpc/status.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef GOOGLE_RPC_STATUS_PROTO_UPB_H_
+#define GOOGLE_RPC_STATUS_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct google_rpc_Status;
+typedef struct google_rpc_Status google_rpc_Status;
+extern const upb_msglayout google_rpc_Status_msginit;
+struct google_protobuf_Any;
+extern const upb_msglayout google_protobuf_Any_msginit;
+
+
+/* google.rpc.Status */
+
+UPB_INLINE google_rpc_Status *google_rpc_Status_new(upb_arena *arena) {
+  return (google_rpc_Status *)upb_msg_new(&google_rpc_Status_msginit, arena);
+}
+UPB_INLINE google_rpc_Status *google_rpc_Status_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  google_rpc_Status *ret = google_rpc_Status_new(arena);
+  return (ret && upb_decode(buf, size, ret, &google_rpc_Status_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *google_rpc_Status_serialize(const google_rpc_Status *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &google_rpc_Status_msginit, arena, len);
+}
+
+UPB_INLINE int32_t google_rpc_Status_code(const google_rpc_Status *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview google_rpc_Status_message(const google_rpc_Status *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const struct google_protobuf_Any* const* google_rpc_Status_details(const google_rpc_Status *msg, size_t *len) { return (const struct google_protobuf_Any* const*)_upb_array_accessor(msg, UPB_SIZE(12, 24), len); }
+
+UPB_INLINE void google_rpc_Status_set_code(google_rpc_Status *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void google_rpc_Status_set_message(google_rpc_Status *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Any** google_rpc_Status_mutable_details(google_rpc_Status *msg, size_t *len) {
+  return (struct google_protobuf_Any**)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 24), len);
+}
+UPB_INLINE struct google_protobuf_Any** google_rpc_Status_resize_details(google_rpc_Status *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Any**)_upb_array_resize_accessor(msg, UPB_SIZE(12, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Any* google_rpc_Status_add_details(google_rpc_Status *msg, upb_arena *arena) {
+  struct google_protobuf_Any* sub = (struct google_protobuf_Any*)upb_msg_new(&google_protobuf_Any_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* GOOGLE_RPC_STATUS_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.c
new file mode 100644
index 0000000..ada6eee
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.c	
@@ -0,0 +1,69 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/altscontext.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/altscontext.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/transport_security_common.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const grpc_gcp_AltsContext_submsgs[2] = {
+  &grpc_gcp_AltsContext_PeerAttributesEntry_msginit,
+  &grpc_gcp_RpcProtocolVersions_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_AltsContext__fields[7] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 24), 0, 0, 9, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {4, UPB_SIZE(24, 40), 0, 0, 9, 1},
+  {5, UPB_SIZE(32, 56), 0, 0, 9, 1},
+  {6, UPB_SIZE(40, 72), 0, 1, 11, 1},
+  {7, UPB_SIZE(44, 80), 0, 0, 11, 3},
+};
+
+const upb_msglayout grpc_gcp_AltsContext_msginit = {
+  &grpc_gcp_AltsContext_submsgs[0],
+  &grpc_gcp_AltsContext__fields[0],
+  UPB_SIZE(48, 96), 7, false,
+};
+
+static const upb_msglayout_field grpc_gcp_AltsContext_PeerAttributesEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout grpc_gcp_AltsContext_PeerAttributesEntry_msginit = {
+  NULL,
+  &grpc_gcp_AltsContext_PeerAttributesEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h
new file mode 100644
index 0000000..8defc69
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h	
@@ -0,0 +1,150 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/altscontext.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_AltsContext;
+struct grpc_gcp_AltsContext_PeerAttributesEntry;
+typedef struct grpc_gcp_AltsContext grpc_gcp_AltsContext;
+typedef struct grpc_gcp_AltsContext_PeerAttributesEntry grpc_gcp_AltsContext_PeerAttributesEntry;
+extern const upb_msglayout grpc_gcp_AltsContext_msginit;
+extern const upb_msglayout grpc_gcp_AltsContext_PeerAttributesEntry_msginit;
+struct grpc_gcp_RpcProtocolVersions;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+
+
+/* grpc.gcp.AltsContext */
+
+UPB_INLINE grpc_gcp_AltsContext *grpc_gcp_AltsContext_new(upb_arena *arena) {
+  return (grpc_gcp_AltsContext *)upb_msg_new(&grpc_gcp_AltsContext_msginit, arena);
+}
+UPB_INLINE grpc_gcp_AltsContext *grpc_gcp_AltsContext_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_AltsContext *ret = grpc_gcp_AltsContext_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_AltsContext_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_AltsContext_serialize(const grpc_gcp_AltsContext *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_AltsContext_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_AltsContext_application_protocol(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_record_protocol(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE int32_t grpc_gcp_AltsContext_security_level(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_peer_service_account(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_local_service_account(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 56)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_AltsContext_peer_rpc_versions(const grpc_gcp_AltsContext *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)); }
+UPB_INLINE const grpc_gcp_AltsContext_PeerAttributesEntry* const* grpc_gcp_AltsContext_peer_attributes(const grpc_gcp_AltsContext *msg, size_t *len) { return (const grpc_gcp_AltsContext_PeerAttributesEntry* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+
+UPB_INLINE void grpc_gcp_AltsContext_set_application_protocol(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_record_protocol(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_security_level(grpc_gcp_AltsContext *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_peer_service_account(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_local_service_account(grpc_gcp_AltsContext *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_set_peer_rpc_versions(grpc_gcp_AltsContext *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_AltsContext_mutable_peer_rpc_versions(grpc_gcp_AltsContext *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_AltsContext_peer_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_AltsContext_set_peer_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry** grpc_gcp_AltsContext_mutable_peer_attributes(grpc_gcp_AltsContext *msg, size_t *len) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry** grpc_gcp_AltsContext_resize_peer_attributes(grpc_gcp_AltsContext *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_AltsContext_PeerAttributesEntry* grpc_gcp_AltsContext_add_peer_attributes(grpc_gcp_AltsContext *msg, upb_arena *arena) {
+  struct grpc_gcp_AltsContext_PeerAttributesEntry* sub = (struct grpc_gcp_AltsContext_PeerAttributesEntry*)upb_msg_new(&grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.AltsContext.PeerAttributesEntry */
+
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry *grpc_gcp_AltsContext_PeerAttributesEntry_new(upb_arena *arena) {
+  return (grpc_gcp_AltsContext_PeerAttributesEntry *)upb_msg_new(&grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_AltsContext_PeerAttributesEntry *grpc_gcp_AltsContext_PeerAttributesEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_AltsContext_PeerAttributesEntry *ret = grpc_gcp_AltsContext_PeerAttributesEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_AltsContext_PeerAttributesEntry_serialize(const grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_AltsContext_PeerAttributesEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_AltsContext_PeerAttributesEntry_key(const grpc_gcp_AltsContext_PeerAttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_AltsContext_PeerAttributesEntry_value(const grpc_gcp_AltsContext_PeerAttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_gcp_AltsContext_PeerAttributesEntry_set_key(grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_AltsContext_PeerAttributesEntry_set_value(grpc_gcp_AltsContext_PeerAttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_ALTSCONTEXT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.c
new file mode 100644
index 0000000..f9f598b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.c	
@@ -0,0 +1,232 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/handshaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/handshaker.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/transport_security_common.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field grpc_gcp_Endpoint__fields[3] = {
+  {1, UPB_SIZE(12, 16), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 5, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout grpc_gcp_Endpoint_msginit = {
+  NULL,
+  &grpc_gcp_Endpoint__fields[0],
+  UPB_SIZE(24, 32), 3, false,
+};
+
+static const upb_msglayout *const grpc_gcp_Identity_submsgs[1] = {
+  &grpc_gcp_Identity_AttributesEntry_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_Identity__fields[3] = {
+  {1, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {2, UPB_SIZE(4, 8), UPB_SIZE(-13, -25), 0, 9, 1},
+  {3, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout grpc_gcp_Identity_msginit = {
+  &grpc_gcp_Identity_submsgs[0],
+  &grpc_gcp_Identity__fields[0],
+  UPB_SIZE(16, 32), 3, false,
+};
+
+static const upb_msglayout_field grpc_gcp_Identity_AttributesEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout grpc_gcp_Identity_AttributesEntry_msginit = {
+  NULL,
+  &grpc_gcp_Identity_AttributesEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const grpc_gcp_StartClientHandshakeReq_submsgs[5] = {
+  &grpc_gcp_Endpoint_msginit,
+  &grpc_gcp_Identity_msginit,
+  &grpc_gcp_RpcProtocolVersions_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_StartClientHandshakeReq__fields[10] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+  {2, UPB_SIZE(36, 64), 0, 0, 9, 3},
+  {3, UPB_SIZE(40, 72), 0, 0, 9, 3},
+  {4, UPB_SIZE(44, 80), 0, 1, 11, 3},
+  {5, UPB_SIZE(20, 32), 0, 1, 11, 1},
+  {6, UPB_SIZE(24, 40), 0, 0, 11, 1},
+  {7, UPB_SIZE(28, 48), 0, 0, 11, 1},
+  {8, UPB_SIZE(12, 16), 0, 0, 9, 1},
+  {9, UPB_SIZE(32, 56), 0, 2, 11, 1},
+  {10, UPB_SIZE(8, 8), 0, 0, 13, 1},
+};
+
+const upb_msglayout grpc_gcp_StartClientHandshakeReq_msginit = {
+  &grpc_gcp_StartClientHandshakeReq_submsgs[0],
+  &grpc_gcp_StartClientHandshakeReq__fields[0],
+  UPB_SIZE(48, 96), 10, false,
+};
+
+static const upb_msglayout *const grpc_gcp_ServerHandshakeParameters_submsgs[1] = {
+  &grpc_gcp_Identity_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_ServerHandshakeParameters__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 3},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 3},
+};
+
+const upb_msglayout grpc_gcp_ServerHandshakeParameters_msginit = {
+  &grpc_gcp_ServerHandshakeParameters_submsgs[0],
+  &grpc_gcp_ServerHandshakeParameters__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout *const grpc_gcp_StartServerHandshakeReq_submsgs[4] = {
+  &grpc_gcp_Endpoint_msginit,
+  &grpc_gcp_RpcProtocolVersions_msginit,
+  &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_StartServerHandshakeReq__fields[7] = {
+  {1, UPB_SIZE(24, 48), 0, 0, 9, 3},
+  {2, UPB_SIZE(28, 56), 0, 2, 11, 3},
+  {3, UPB_SIZE(4, 8), 0, 0, 12, 1},
+  {4, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {5, UPB_SIZE(16, 32), 0, 0, 11, 1},
+  {6, UPB_SIZE(20, 40), 0, 1, 11, 1},
+  {7, UPB_SIZE(0, 0), 0, 0, 13, 1},
+};
+
+const upb_msglayout grpc_gcp_StartServerHandshakeReq_msginit = {
+  &grpc_gcp_StartServerHandshakeReq_submsgs[0],
+  &grpc_gcp_StartServerHandshakeReq__fields[0],
+  UPB_SIZE(32, 64), 7, false,
+};
+
+static const upb_msglayout *const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_submsgs[1] = {
+  &grpc_gcp_ServerHandshakeParameters_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 5, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit = {
+  &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_submsgs[0],
+  &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout_field grpc_gcp_NextHandshakeMessageReq__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 12, 1},
+};
+
+const upb_msglayout grpc_gcp_NextHandshakeMessageReq_msginit = {
+  NULL,
+  &grpc_gcp_NextHandshakeMessageReq__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout *const grpc_gcp_HandshakerReq_submsgs[3] = {
+  &grpc_gcp_NextHandshakeMessageReq_msginit,
+  &grpc_gcp_StartClientHandshakeReq_msginit,
+  &grpc_gcp_StartServerHandshakeReq_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_HandshakerReq__fields[3] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout grpc_gcp_HandshakerReq_msginit = {
+  &grpc_gcp_HandshakerReq_submsgs[0],
+  &grpc_gcp_HandshakerReq__fields[0],
+  UPB_SIZE(8, 16), 3, false,
+};
+
+static const upb_msglayout *const grpc_gcp_HandshakerResult_submsgs[3] = {
+  &grpc_gcp_Identity_msginit,
+  &grpc_gcp_RpcProtocolVersions_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_HandshakerResult__fields[8] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(16, 24), 0, 0, 9, 1},
+  {3, UPB_SIZE(24, 40), 0, 0, 12, 1},
+  {4, UPB_SIZE(32, 56), 0, 0, 11, 1},
+  {5, UPB_SIZE(36, 64), 0, 0, 11, 1},
+  {6, UPB_SIZE(4, 4), 0, 0, 8, 1},
+  {7, UPB_SIZE(40, 72), 0, 1, 11, 1},
+  {8, UPB_SIZE(0, 0), 0, 0, 13, 1},
+};
+
+const upb_msglayout grpc_gcp_HandshakerResult_msginit = {
+  &grpc_gcp_HandshakerResult_submsgs[0],
+  &grpc_gcp_HandshakerResult__fields[0],
+  UPB_SIZE(48, 80), 8, false,
+};
+
+static const upb_msglayout_field grpc_gcp_HandshakerStatus__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 9, 1},
+};
+
+const upb_msglayout grpc_gcp_HandshakerStatus_msginit = {
+  NULL,
+  &grpc_gcp_HandshakerStatus__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const grpc_gcp_HandshakerResp_submsgs[2] = {
+  &grpc_gcp_HandshakerResult_msginit,
+  &grpc_gcp_HandshakerStatus_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_HandshakerResp__fields[4] = {
+  {1, UPB_SIZE(4, 8), 0, 0, 12, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {3, UPB_SIZE(12, 24), 0, 0, 11, 1},
+  {4, UPB_SIZE(16, 32), 0, 1, 11, 1},
+};
+
+const upb_msglayout grpc_gcp_HandshakerResp_msginit = {
+  &grpc_gcp_HandshakerResp_submsgs[0],
+  &grpc_gcp_HandshakerResp__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h
new file mode 100644
index 0000000..14dfb95
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h	
@@ -0,0 +1,717 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/handshaker.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_Endpoint;
+struct grpc_gcp_Identity;
+struct grpc_gcp_Identity_AttributesEntry;
+struct grpc_gcp_StartClientHandshakeReq;
+struct grpc_gcp_ServerHandshakeParameters;
+struct grpc_gcp_StartServerHandshakeReq;
+struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry;
+struct grpc_gcp_NextHandshakeMessageReq;
+struct grpc_gcp_HandshakerReq;
+struct grpc_gcp_HandshakerResult;
+struct grpc_gcp_HandshakerStatus;
+struct grpc_gcp_HandshakerResp;
+typedef struct grpc_gcp_Endpoint grpc_gcp_Endpoint;
+typedef struct grpc_gcp_Identity grpc_gcp_Identity;
+typedef struct grpc_gcp_Identity_AttributesEntry grpc_gcp_Identity_AttributesEntry;
+typedef struct grpc_gcp_StartClientHandshakeReq grpc_gcp_StartClientHandshakeReq;
+typedef struct grpc_gcp_ServerHandshakeParameters grpc_gcp_ServerHandshakeParameters;
+typedef struct grpc_gcp_StartServerHandshakeReq grpc_gcp_StartServerHandshakeReq;
+typedef struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry;
+typedef struct grpc_gcp_NextHandshakeMessageReq grpc_gcp_NextHandshakeMessageReq;
+typedef struct grpc_gcp_HandshakerReq grpc_gcp_HandshakerReq;
+typedef struct grpc_gcp_HandshakerResult grpc_gcp_HandshakerResult;
+typedef struct grpc_gcp_HandshakerStatus grpc_gcp_HandshakerStatus;
+typedef struct grpc_gcp_HandshakerResp grpc_gcp_HandshakerResp;
+extern const upb_msglayout grpc_gcp_Endpoint_msginit;
+extern const upb_msglayout grpc_gcp_Identity_msginit;
+extern const upb_msglayout grpc_gcp_Identity_AttributesEntry_msginit;
+extern const upb_msglayout grpc_gcp_StartClientHandshakeReq_msginit;
+extern const upb_msglayout grpc_gcp_ServerHandshakeParameters_msginit;
+extern const upb_msglayout grpc_gcp_StartServerHandshakeReq_msginit;
+extern const upb_msglayout grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit;
+extern const upb_msglayout grpc_gcp_NextHandshakeMessageReq_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerReq_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerResult_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerStatus_msginit;
+extern const upb_msglayout grpc_gcp_HandshakerResp_msginit;
+struct grpc_gcp_RpcProtocolVersions;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+
+typedef enum {
+  grpc_gcp_HANDSHAKE_PROTOCOL_UNSPECIFIED = 0,
+  grpc_gcp_TLS = 1,
+  grpc_gcp_ALTS = 2
+} grpc_gcp_HandshakeProtocol;
+
+typedef enum {
+  grpc_gcp_NETWORK_PROTOCOL_UNSPECIFIED = 0,
+  grpc_gcp_TCP = 1,
+  grpc_gcp_UDP = 2
+} grpc_gcp_NetworkProtocol;
+
+
+/* grpc.gcp.Endpoint */
+
+UPB_INLINE grpc_gcp_Endpoint *grpc_gcp_Endpoint_new(upb_arena *arena) {
+  return (grpc_gcp_Endpoint *)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Endpoint *grpc_gcp_Endpoint_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Endpoint *ret = grpc_gcp_Endpoint_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Endpoint_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Endpoint_serialize(const grpc_gcp_Endpoint *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Endpoint_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_Endpoint_ip_address(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE int32_t grpc_gcp_Endpoint_port(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t grpc_gcp_Endpoint_protocol(const grpc_gcp_Endpoint *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_Endpoint_set_ip_address(grpc_gcp_Endpoint *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void grpc_gcp_Endpoint_set_port(grpc_gcp_Endpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_Endpoint_set_protocol(grpc_gcp_Endpoint *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.Identity */
+
+UPB_INLINE grpc_gcp_Identity *grpc_gcp_Identity_new(upb_arena *arena) {
+  return (grpc_gcp_Identity *)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Identity *grpc_gcp_Identity_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Identity *ret = grpc_gcp_Identity_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Identity_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Identity_serialize(const grpc_gcp_Identity *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Identity_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_gcp_Identity_identity_oneof_service_account = 1,
+  grpc_gcp_Identity_identity_oneof_hostname = 2,
+  grpc_gcp_Identity_identity_oneof_NOT_SET = 0
+} grpc_gcp_Identity_identity_oneof_oneofcases;
+UPB_INLINE grpc_gcp_Identity_identity_oneof_oneofcases grpc_gcp_Identity_identity_oneof_case(const grpc_gcp_Identity* msg) { return (grpc_gcp_Identity_identity_oneof_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool grpc_gcp_Identity_has_service_account(const grpc_gcp_Identity *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE upb_strview grpc_gcp_Identity_service_account(const grpc_gcp_Identity *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 1, upb_strview_make("", strlen(""))); }
+UPB_INLINE bool grpc_gcp_Identity_has_hostname(const grpc_gcp_Identity *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE upb_strview grpc_gcp_Identity_hostname(const grpc_gcp_Identity *msg) { return UPB_READ_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), UPB_SIZE(12, 24), 2, upb_strview_make("", strlen(""))); }
+UPB_INLINE const grpc_gcp_Identity_AttributesEntry* const* grpc_gcp_Identity_attributes(const grpc_gcp_Identity *msg, size_t *len) { return (const grpc_gcp_Identity_AttributesEntry* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE void grpc_gcp_Identity_set_service_account(grpc_gcp_Identity *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE void grpc_gcp_Identity_set_hostname(grpc_gcp_Identity *msg, upb_strview value) {
+  UPB_WRITE_ONEOF(msg, upb_strview, UPB_SIZE(4, 8), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry** grpc_gcp_Identity_mutable_attributes(grpc_gcp_Identity *msg, size_t *len) {
+  return (grpc_gcp_Identity_AttributesEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry** grpc_gcp_Identity_resize_attributes(grpc_gcp_Identity *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity_AttributesEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity_AttributesEntry* grpc_gcp_Identity_add_attributes(grpc_gcp_Identity *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity_AttributesEntry* sub = (struct grpc_gcp_Identity_AttributesEntry*)upb_msg_new(&grpc_gcp_Identity_AttributesEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.Identity.AttributesEntry */
+
+UPB_INLINE grpc_gcp_Identity_AttributesEntry *grpc_gcp_Identity_AttributesEntry_new(upb_arena *arena) {
+  return (grpc_gcp_Identity_AttributesEntry *)upb_msg_new(&grpc_gcp_Identity_AttributesEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_Identity_AttributesEntry *grpc_gcp_Identity_AttributesEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_Identity_AttributesEntry *ret = grpc_gcp_Identity_AttributesEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_Identity_AttributesEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_Identity_AttributesEntry_serialize(const grpc_gcp_Identity_AttributesEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_Identity_AttributesEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_Identity_AttributesEntry_key(const grpc_gcp_Identity_AttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_Identity_AttributesEntry_value(const grpc_gcp_Identity_AttributesEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_gcp_Identity_AttributesEntry_set_key(grpc_gcp_Identity_AttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_Identity_AttributesEntry_set_value(grpc_gcp_Identity_AttributesEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* grpc.gcp.StartClientHandshakeReq */
+
+UPB_INLINE grpc_gcp_StartClientHandshakeReq *grpc_gcp_StartClientHandshakeReq_new(upb_arena *arena) {
+  return (grpc_gcp_StartClientHandshakeReq *)upb_msg_new(&grpc_gcp_StartClientHandshakeReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartClientHandshakeReq *grpc_gcp_StartClientHandshakeReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartClientHandshakeReq *ret = grpc_gcp_StartClientHandshakeReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartClientHandshakeReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartClientHandshakeReq_serialize(const grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartClientHandshakeReq_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_gcp_StartClientHandshakeReq_handshake_security_protocol(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview const* grpc_gcp_StartClientHandshakeReq_application_protocols(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(36, 64), len); }
+UPB_INLINE upb_strview const* grpc_gcp_StartClientHandshakeReq_record_protocols(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(40, 72), len); }
+UPB_INLINE const grpc_gcp_Identity* const* grpc_gcp_StartClientHandshakeReq_target_identities(const grpc_gcp_StartClientHandshakeReq *msg, size_t *len) { return (const grpc_gcp_Identity* const*)_upb_array_accessor(msg, UPB_SIZE(44, 80), len); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_local_identity(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(20, 32)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_local_endpoint(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(24, 40)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_remote_endpoint(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(28, 48)); }
+UPB_INLINE upb_strview grpc_gcp_StartClientHandshakeReq_target_name(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartClientHandshakeReq_rpc_versions(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(32, 56)); }
+UPB_INLINE uint32_t grpc_gcp_StartClientHandshakeReq_max_frame_size(const grpc_gcp_StartClientHandshakeReq *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_handshake_security_protocol(grpc_gcp_StartClientHandshakeReq *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_mutable_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 64), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_resize_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(36, 64), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartClientHandshakeReq_add_application_protocols(grpc_gcp_StartClientHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 64), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_mutable_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(40, 72), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartClientHandshakeReq_resize_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(40, 72), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartClientHandshakeReq_add_record_protocols(grpc_gcp_StartClientHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(40, 72), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_StartClientHandshakeReq_mutable_target_identities(grpc_gcp_StartClientHandshakeReq *msg, size_t *len) {
+  return (grpc_gcp_Identity**)_upb_array_mutable_accessor(msg, UPB_SIZE(44, 80), len);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_StartClientHandshakeReq_resize_target_identities(grpc_gcp_StartClientHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity**)_upb_array_resize_accessor(msg, UPB_SIZE(44, 80), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_add_target_identities(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(44, 80), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_local_identity(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_StartClientHandshakeReq_mutable_local_identity(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_StartClientHandshakeReq_local_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_local_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_local_endpoint(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_mutable_local_endpoint(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartClientHandshakeReq_local_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_local_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_remote_endpoint(grpc_gcp_StartClientHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartClientHandshakeReq_mutable_remote_endpoint(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartClientHandshakeReq_remote_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_remote_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_target_name(grpc_gcp_StartClientHandshakeReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_rpc_versions(grpc_gcp_StartClientHandshakeReq *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartClientHandshakeReq_mutable_rpc_versions(grpc_gcp_StartClientHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_StartClientHandshakeReq_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartClientHandshakeReq_set_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartClientHandshakeReq_set_max_frame_size(grpc_gcp_StartClientHandshakeReq *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+
+/* grpc.gcp.ServerHandshakeParameters */
+
+UPB_INLINE grpc_gcp_ServerHandshakeParameters *grpc_gcp_ServerHandshakeParameters_new(upb_arena *arena) {
+  return (grpc_gcp_ServerHandshakeParameters *)upb_msg_new(&grpc_gcp_ServerHandshakeParameters_msginit, arena);
+}
+UPB_INLINE grpc_gcp_ServerHandshakeParameters *grpc_gcp_ServerHandshakeParameters_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_ServerHandshakeParameters *ret = grpc_gcp_ServerHandshakeParameters_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_ServerHandshakeParameters_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_ServerHandshakeParameters_serialize(const grpc_gcp_ServerHandshakeParameters *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_ServerHandshakeParameters_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* grpc_gcp_ServerHandshakeParameters_record_protocols(const grpc_gcp_ServerHandshakeParameters *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+UPB_INLINE const grpc_gcp_Identity* const* grpc_gcp_ServerHandshakeParameters_local_identities(const grpc_gcp_ServerHandshakeParameters *msg, size_t *len) { return (const grpc_gcp_Identity* const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+
+UPB_INLINE upb_strview* grpc_gcp_ServerHandshakeParameters_mutable_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_ServerHandshakeParameters_resize_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_ServerHandshakeParameters_add_record_protocols(grpc_gcp_ServerHandshakeParameters *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_ServerHandshakeParameters_mutable_local_identities(grpc_gcp_ServerHandshakeParameters *msg, size_t *len) {
+  return (grpc_gcp_Identity**)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE grpc_gcp_Identity** grpc_gcp_ServerHandshakeParameters_resize_local_identities(grpc_gcp_ServerHandshakeParameters *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_Identity**)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_ServerHandshakeParameters_add_local_identities(grpc_gcp_ServerHandshakeParameters *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.gcp.StartServerHandshakeReq */
+
+UPB_INLINE grpc_gcp_StartServerHandshakeReq *grpc_gcp_StartServerHandshakeReq_new(upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq *)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq *grpc_gcp_StartServerHandshakeReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartServerHandshakeReq *ret = grpc_gcp_StartServerHandshakeReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartServerHandshakeReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartServerHandshakeReq_serialize(const grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartServerHandshakeReq_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview const* grpc_gcp_StartServerHandshakeReq_application_protocols(const grpc_gcp_StartServerHandshakeReq *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* const* grpc_gcp_StartServerHandshakeReq_handshake_parameters(const grpc_gcp_StartServerHandshakeReq *msg, size_t *len) { return (const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+UPB_INLINE upb_strview grpc_gcp_StartServerHandshakeReq_in_bytes(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_local_endpoint(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(12, 24)); }
+UPB_INLINE const grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_remote_endpoint(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Endpoint*, UPB_SIZE(16, 32)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartServerHandshakeReq_rpc_versions(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(20, 40)); }
+UPB_INLINE uint32_t grpc_gcp_StartServerHandshakeReq_max_frame_size(const grpc_gcp_StartServerHandshakeReq *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE upb_strview* grpc_gcp_StartServerHandshakeReq_mutable_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE upb_strview* grpc_gcp_StartServerHandshakeReq_resize_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool grpc_gcp_StartServerHandshakeReq_add_application_protocols(grpc_gcp_StartServerHandshakeReq *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry** grpc_gcp_StartServerHandshakeReq_mutable_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, size_t *len) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry** grpc_gcp_StartServerHandshakeReq_resize_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, size_t len, upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* grpc_gcp_StartServerHandshakeReq_add_handshake_parameters(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* sub = (struct grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry*)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_in_bytes(grpc_gcp_StartServerHandshakeReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_local_endpoint(grpc_gcp_StartServerHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_mutable_local_endpoint(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartServerHandshakeReq_local_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_local_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_remote_endpoint(grpc_gcp_StartServerHandshakeReq *msg, grpc_gcp_Endpoint* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Endpoint*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_Endpoint* grpc_gcp_StartServerHandshakeReq_mutable_remote_endpoint(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_Endpoint* sub = (struct grpc_gcp_Endpoint*)grpc_gcp_StartServerHandshakeReq_remote_endpoint(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Endpoint*)upb_msg_new(&grpc_gcp_Endpoint_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_remote_endpoint(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_rpc_versions(grpc_gcp_StartServerHandshakeReq *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_StartServerHandshakeReq_mutable_rpc_versions(grpc_gcp_StartServerHandshakeReq *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_StartServerHandshakeReq_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_set_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_set_max_frame_size(grpc_gcp_StartServerHandshakeReq *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.StartServerHandshakeReq.HandshakeParametersEntry */
+
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_new(upb_arena *arena) {
+  return (grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena);
+}
+UPB_INLINE grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *ret = grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_serialize(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_key(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_ServerHandshakeParameters* grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_value(const grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_ServerHandshakeParameters*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_key(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_value(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, grpc_gcp_ServerHandshakeParameters* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_ServerHandshakeParameters*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct grpc_gcp_ServerHandshakeParameters* grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_mutable_value(grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry *msg, upb_arena *arena) {
+  struct grpc_gcp_ServerHandshakeParameters* sub = (struct grpc_gcp_ServerHandshakeParameters*)grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_value(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_ServerHandshakeParameters*)upb_msg_new(&grpc_gcp_ServerHandshakeParameters_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_value(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.NextHandshakeMessageReq */
+
+UPB_INLINE grpc_gcp_NextHandshakeMessageReq *grpc_gcp_NextHandshakeMessageReq_new(upb_arena *arena) {
+  return (grpc_gcp_NextHandshakeMessageReq *)upb_msg_new(&grpc_gcp_NextHandshakeMessageReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_NextHandshakeMessageReq *grpc_gcp_NextHandshakeMessageReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_NextHandshakeMessageReq *ret = grpc_gcp_NextHandshakeMessageReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_NextHandshakeMessageReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_NextHandshakeMessageReq_serialize(const grpc_gcp_NextHandshakeMessageReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_NextHandshakeMessageReq_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_NextHandshakeMessageReq_in_bytes(const grpc_gcp_NextHandshakeMessageReq *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_NextHandshakeMessageReq_set_in_bytes(grpc_gcp_NextHandshakeMessageReq *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.HandshakerReq */
+
+UPB_INLINE grpc_gcp_HandshakerReq *grpc_gcp_HandshakerReq_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerReq *)upb_msg_new(&grpc_gcp_HandshakerReq_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerReq *grpc_gcp_HandshakerReq_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerReq *ret = grpc_gcp_HandshakerReq_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerReq_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerReq_serialize(const grpc_gcp_HandshakerReq *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerReq_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_gcp_HandshakerReq_req_oneof_client_start = 1,
+  grpc_gcp_HandshakerReq_req_oneof_server_start = 2,
+  grpc_gcp_HandshakerReq_req_oneof_next = 3,
+  grpc_gcp_HandshakerReq_req_oneof_NOT_SET = 0
+} grpc_gcp_HandshakerReq_req_oneof_oneofcases;
+UPB_INLINE grpc_gcp_HandshakerReq_req_oneof_oneofcases grpc_gcp_HandshakerReq_req_oneof_case(const grpc_gcp_HandshakerReq* msg) { return (grpc_gcp_HandshakerReq_req_oneof_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_client_start(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_gcp_StartClientHandshakeReq* grpc_gcp_HandshakerReq_client_start(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_StartClientHandshakeReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_server_start(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_gcp_StartServerHandshakeReq* grpc_gcp_HandshakerReq_server_start(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_StartServerHandshakeReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool grpc_gcp_HandshakerReq_has_next(const grpc_gcp_HandshakerReq *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const grpc_gcp_NextHandshakeMessageReq* grpc_gcp_HandshakerReq_next(const grpc_gcp_HandshakerReq *msg) { return UPB_READ_ONEOF(msg, const grpc_gcp_NextHandshakeMessageReq*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void grpc_gcp_HandshakerReq_set_client_start(grpc_gcp_HandshakerReq *msg, grpc_gcp_StartClientHandshakeReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_StartClientHandshakeReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_gcp_StartClientHandshakeReq* grpc_gcp_HandshakerReq_mutable_client_start(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartClientHandshakeReq* sub = (struct grpc_gcp_StartClientHandshakeReq*)grpc_gcp_HandshakerReq_client_start(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_StartClientHandshakeReq*)upb_msg_new(&grpc_gcp_StartClientHandshakeReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_client_start(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerReq_set_server_start(grpc_gcp_HandshakerReq *msg, grpc_gcp_StartServerHandshakeReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_StartServerHandshakeReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_gcp_StartServerHandshakeReq* grpc_gcp_HandshakerReq_mutable_server_start(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_StartServerHandshakeReq* sub = (struct grpc_gcp_StartServerHandshakeReq*)grpc_gcp_HandshakerReq_server_start(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_StartServerHandshakeReq*)upb_msg_new(&grpc_gcp_StartServerHandshakeReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_server_start(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerReq_set_next(grpc_gcp_HandshakerReq *msg, grpc_gcp_NextHandshakeMessageReq* value) {
+  UPB_WRITE_ONEOF(msg, grpc_gcp_NextHandshakeMessageReq*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct grpc_gcp_NextHandshakeMessageReq* grpc_gcp_HandshakerReq_mutable_next(grpc_gcp_HandshakerReq *msg, upb_arena *arena) {
+  struct grpc_gcp_NextHandshakeMessageReq* sub = (struct grpc_gcp_NextHandshakeMessageReq*)grpc_gcp_HandshakerReq_next(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_NextHandshakeMessageReq*)upb_msg_new(&grpc_gcp_NextHandshakeMessageReq_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerReq_set_next(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.HandshakerResult */
+
+UPB_INLINE grpc_gcp_HandshakerResult *grpc_gcp_HandshakerResult_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerResult *)upb_msg_new(&grpc_gcp_HandshakerResult_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerResult *grpc_gcp_HandshakerResult_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerResult *ret = grpc_gcp_HandshakerResult_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerResult_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerResult_serialize(const grpc_gcp_HandshakerResult *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerResult_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_application_protocol(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_record_protocol(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerResult_key_data(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_HandshakerResult_peer_identity(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(32, 56)); }
+UPB_INLINE const grpc_gcp_Identity* grpc_gcp_HandshakerResult_local_identity(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_Identity*, UPB_SIZE(36, 64)); }
+UPB_INLINE bool grpc_gcp_HandshakerResult_keep_channel_open(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE const struct grpc_gcp_RpcProtocolVersions* grpc_gcp_HandshakerResult_peer_rpc_versions(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, const struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)); }
+UPB_INLINE uint32_t grpc_gcp_HandshakerResult_max_frame_size(const grpc_gcp_HandshakerResult *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_gcp_HandshakerResult_set_application_protocol(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_record_protocol(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_key_data(grpc_gcp_HandshakerResult *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_peer_identity(grpc_gcp_HandshakerResult *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(32, 56)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_HandshakerResult_mutable_peer_identity(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_HandshakerResult_peer_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_peer_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_local_identity(grpc_gcp_HandshakerResult *msg, grpc_gcp_Identity* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_Identity*, UPB_SIZE(36, 64)) = value;
+}
+UPB_INLINE struct grpc_gcp_Identity* grpc_gcp_HandshakerResult_mutable_local_identity(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_Identity* sub = (struct grpc_gcp_Identity*)grpc_gcp_HandshakerResult_local_identity(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_Identity*)upb_msg_new(&grpc_gcp_Identity_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_local_identity(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_keep_channel_open(grpc_gcp_HandshakerResult *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_peer_rpc_versions(grpc_gcp_HandshakerResult *msg, struct grpc_gcp_RpcProtocolVersions* value) {
+  UPB_FIELD_AT(msg, struct grpc_gcp_RpcProtocolVersions*, UPB_SIZE(40, 72)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions* grpc_gcp_HandshakerResult_mutable_peer_rpc_versions(grpc_gcp_HandshakerResult *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions* sub = (struct grpc_gcp_RpcProtocolVersions*)grpc_gcp_HandshakerResult_peer_rpc_versions(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResult_set_peer_rpc_versions(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResult_set_max_frame_size(grpc_gcp_HandshakerResult *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.gcp.HandshakerStatus */
+
+UPB_INLINE grpc_gcp_HandshakerStatus *grpc_gcp_HandshakerStatus_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerStatus *)upb_msg_new(&grpc_gcp_HandshakerStatus_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerStatus *grpc_gcp_HandshakerStatus_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerStatus *ret = grpc_gcp_HandshakerStatus_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerStatus_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerStatus_serialize(const grpc_gcp_HandshakerStatus *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerStatus_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t grpc_gcp_HandshakerStatus_code(const grpc_gcp_HandshakerStatus *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_gcp_HandshakerStatus_details(const grpc_gcp_HandshakerStatus *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_HandshakerStatus_set_code(grpc_gcp_HandshakerStatus *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerStatus_set_details(grpc_gcp_HandshakerStatus *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+
+/* grpc.gcp.HandshakerResp */
+
+UPB_INLINE grpc_gcp_HandshakerResp *grpc_gcp_HandshakerResp_new(upb_arena *arena) {
+  return (grpc_gcp_HandshakerResp *)upb_msg_new(&grpc_gcp_HandshakerResp_msginit, arena);
+}
+UPB_INLINE grpc_gcp_HandshakerResp *grpc_gcp_HandshakerResp_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_HandshakerResp *ret = grpc_gcp_HandshakerResp_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_HandshakerResp_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_HandshakerResp_serialize(const grpc_gcp_HandshakerResp *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_HandshakerResp_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_gcp_HandshakerResp_out_frames(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)); }
+UPB_INLINE uint32_t grpc_gcp_HandshakerResp_bytes_consumed(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_HandshakerResult* grpc_gcp_HandshakerResp_result(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_HandshakerResult*, UPB_SIZE(12, 24)); }
+UPB_INLINE const grpc_gcp_HandshakerStatus* grpc_gcp_HandshakerResp_status(const grpc_gcp_HandshakerResp *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_HandshakerStatus*, UPB_SIZE(16, 32)); }
+
+UPB_INLINE void grpc_gcp_HandshakerResp_set_out_frames(grpc_gcp_HandshakerResp *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_bytes_consumed(grpc_gcp_HandshakerResp *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_result(grpc_gcp_HandshakerResp *msg, grpc_gcp_HandshakerResult* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_HandshakerResult*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct grpc_gcp_HandshakerResult* grpc_gcp_HandshakerResp_mutable_result(grpc_gcp_HandshakerResp *msg, upb_arena *arena) {
+  struct grpc_gcp_HandshakerResult* sub = (struct grpc_gcp_HandshakerResult*)grpc_gcp_HandshakerResp_result(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_HandshakerResult*)upb_msg_new(&grpc_gcp_HandshakerResult_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResp_set_result(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_HandshakerResp_set_status(grpc_gcp_HandshakerResp *msg, grpc_gcp_HandshakerStatus* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_HandshakerStatus*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct grpc_gcp_HandshakerStatus* grpc_gcp_HandshakerResp_mutable_status(grpc_gcp_HandshakerResp *msg, upb_arena *arena) {
+  struct grpc_gcp_HandshakerStatus* sub = (struct grpc_gcp_HandshakerStatus*)grpc_gcp_HandshakerResp_status(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_HandshakerStatus*)upb_msg_new(&grpc_gcp_HandshakerStatus_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_HandshakerResp_set_status(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_HANDSHAKER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.c
new file mode 100644
index 0000000..72c72b1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.c	
@@ -0,0 +1,58 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/transport_security_common.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/transport_security_common.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const grpc_gcp_RpcProtocolVersions_submsgs[2] = {
+  &grpc_gcp_RpcProtocolVersions_Version_msginit,
+};
+
+static const upb_msglayout_field grpc_gcp_RpcProtocolVersions__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 11, 1},
+};
+
+const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit = {
+  &grpc_gcp_RpcProtocolVersions_submsgs[0],
+  &grpc_gcp_RpcProtocolVersions__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout_field grpc_gcp_RpcProtocolVersions_Version__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 13, 1},
+  {2, UPB_SIZE(4, 4), 0, 0, 13, 1},
+};
+
+const upb_msglayout grpc_gcp_RpcProtocolVersions_Version_msginit = {
+  NULL,
+  &grpc_gcp_RpcProtocolVersions_Version__fields[0],
+  UPB_SIZE(8, 8), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h
new file mode 100644
index 0000000..06c4392
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h	
@@ -0,0 +1,133 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/gcp/transport_security_common.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_gcp_RpcProtocolVersions;
+struct grpc_gcp_RpcProtocolVersions_Version;
+typedef struct grpc_gcp_RpcProtocolVersions grpc_gcp_RpcProtocolVersions;
+typedef struct grpc_gcp_RpcProtocolVersions_Version grpc_gcp_RpcProtocolVersions_Version;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_msginit;
+extern const upb_msglayout grpc_gcp_RpcProtocolVersions_Version_msginit;
+
+typedef enum {
+  grpc_gcp_SECURITY_NONE = 0,
+  grpc_gcp_INTEGRITY_ONLY = 1,
+  grpc_gcp_INTEGRITY_AND_PRIVACY = 2
+} grpc_gcp_SecurityLevel;
+
+
+/* grpc.gcp.RpcProtocolVersions */
+
+UPB_INLINE grpc_gcp_RpcProtocolVersions *grpc_gcp_RpcProtocolVersions_new(upb_arena *arena) {
+  return (grpc_gcp_RpcProtocolVersions *)upb_msg_new(&grpc_gcp_RpcProtocolVersions_msginit, arena);
+}
+UPB_INLINE grpc_gcp_RpcProtocolVersions *grpc_gcp_RpcProtocolVersions_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_RpcProtocolVersions *ret = grpc_gcp_RpcProtocolVersions_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_RpcProtocolVersions_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_RpcProtocolVersions_serialize(const grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_RpcProtocolVersions_msginit, arena, len);
+}
+
+UPB_INLINE const grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_max_rpc_version(const grpc_gcp_RpcProtocolVersions *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(0, 0)); }
+UPB_INLINE const grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_min_rpc_version(const grpc_gcp_RpcProtocolVersions *msg) { return UPB_FIELD_AT(msg, const grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(4, 8)); }
+
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_set_max_rpc_version(grpc_gcp_RpcProtocolVersions *msg, grpc_gcp_RpcProtocolVersions_Version* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_mutable_max_rpc_version(grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions_Version* sub = (struct grpc_gcp_RpcProtocolVersions_Version*)grpc_gcp_RpcProtocolVersions_max_rpc_version(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions_Version*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_RpcProtocolVersions_set_max_rpc_version(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_set_min_rpc_version(grpc_gcp_RpcProtocolVersions *msg, grpc_gcp_RpcProtocolVersions_Version* value) {
+  UPB_FIELD_AT(msg, grpc_gcp_RpcProtocolVersions_Version*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct grpc_gcp_RpcProtocolVersions_Version* grpc_gcp_RpcProtocolVersions_mutable_min_rpc_version(grpc_gcp_RpcProtocolVersions *msg, upb_arena *arena) {
+  struct grpc_gcp_RpcProtocolVersions_Version* sub = (struct grpc_gcp_RpcProtocolVersions_Version*)grpc_gcp_RpcProtocolVersions_min_rpc_version(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_gcp_RpcProtocolVersions_Version*)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+    if (!sub) return NULL;
+    grpc_gcp_RpcProtocolVersions_set_min_rpc_version(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.gcp.RpcProtocolVersions.Version */
+
+UPB_INLINE grpc_gcp_RpcProtocolVersions_Version *grpc_gcp_RpcProtocolVersions_Version_new(upb_arena *arena) {
+  return (grpc_gcp_RpcProtocolVersions_Version *)upb_msg_new(&grpc_gcp_RpcProtocolVersions_Version_msginit, arena);
+}
+UPB_INLINE grpc_gcp_RpcProtocolVersions_Version *grpc_gcp_RpcProtocolVersions_Version_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_gcp_RpcProtocolVersions_Version *ret = grpc_gcp_RpcProtocolVersions_Version_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_gcp_RpcProtocolVersions_Version_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_gcp_RpcProtocolVersions_Version_serialize(const grpc_gcp_RpcProtocolVersions_Version *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_gcp_RpcProtocolVersions_Version_msginit, arena, len);
+}
+
+UPB_INLINE uint32_t grpc_gcp_RpcProtocolVersions_Version_major(const grpc_gcp_RpcProtocolVersions_Version *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE uint32_t grpc_gcp_RpcProtocolVersions_Version_minor(const grpc_gcp_RpcProtocolVersions_Version *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_Version_set_major(grpc_gcp_RpcProtocolVersions_Version *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_gcp_RpcProtocolVersions_Version_set_minor(grpc_gcp_RpcProtocolVersions_Version *msg, uint32_t value) {
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_GCP_TRANSPORT_SECURITY_COMMON_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.c
new file mode 100644
index 0000000..3c0c0b6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.c	
@@ -0,0 +1,52 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/health/v1/health.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h"
+#else
+  #include  "src/proto/grpc/health/v1/health.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field grpc_health_v1_HealthCheckRequest__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout grpc_health_v1_HealthCheckRequest_msginit = {
+  NULL,
+  &grpc_health_v1_HealthCheckRequest__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field grpc_health_v1_HealthCheckResponse__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 14, 1},
+};
+
+const upb_msglayout grpc_health_v1_HealthCheckResponse_msginit = {
+  NULL,
+  &grpc_health_v1_HealthCheckResponse__fields[0],
+  UPB_SIZE(8, 8), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h
new file mode 100644
index 0000000..df884ff
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/health/v1/health.upb.h	
@@ -0,0 +1,108 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/health/v1/health.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_health_v1_HealthCheckRequest;
+struct grpc_health_v1_HealthCheckResponse;
+typedef struct grpc_health_v1_HealthCheckRequest grpc_health_v1_HealthCheckRequest;
+typedef struct grpc_health_v1_HealthCheckResponse grpc_health_v1_HealthCheckResponse;
+extern const upb_msglayout grpc_health_v1_HealthCheckRequest_msginit;
+extern const upb_msglayout grpc_health_v1_HealthCheckResponse_msginit;
+
+typedef enum {
+  grpc_health_v1_HealthCheckResponse_UNKNOWN = 0,
+  grpc_health_v1_HealthCheckResponse_SERVING = 1,
+  grpc_health_v1_HealthCheckResponse_NOT_SERVING = 2,
+  grpc_health_v1_HealthCheckResponse_SERVICE_UNKNOWN = 3
+} grpc_health_v1_HealthCheckResponse_ServingStatus;
+
+
+/* grpc.health.v1.HealthCheckRequest */
+
+UPB_INLINE grpc_health_v1_HealthCheckRequest *grpc_health_v1_HealthCheckRequest_new(upb_arena *arena) {
+  return (grpc_health_v1_HealthCheckRequest *)upb_msg_new(&grpc_health_v1_HealthCheckRequest_msginit, arena);
+}
+UPB_INLINE grpc_health_v1_HealthCheckRequest *grpc_health_v1_HealthCheckRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_health_v1_HealthCheckRequest *ret = grpc_health_v1_HealthCheckRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_health_v1_HealthCheckRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_health_v1_HealthCheckRequest_serialize(const grpc_health_v1_HealthCheckRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_health_v1_HealthCheckRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_health_v1_HealthCheckRequest_service(const grpc_health_v1_HealthCheckRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_health_v1_HealthCheckRequest_set_service(grpc_health_v1_HealthCheckRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.health.v1.HealthCheckResponse */
+
+UPB_INLINE grpc_health_v1_HealthCheckResponse *grpc_health_v1_HealthCheckResponse_new(upb_arena *arena) {
+  return (grpc_health_v1_HealthCheckResponse *)upb_msg_new(&grpc_health_v1_HealthCheckResponse_msginit, arena);
+}
+UPB_INLINE grpc_health_v1_HealthCheckResponse *grpc_health_v1_HealthCheckResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_health_v1_HealthCheckResponse *ret = grpc_health_v1_HealthCheckResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_health_v1_HealthCheckResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_health_v1_HealthCheckResponse_serialize(const grpc_health_v1_HealthCheckResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_health_v1_HealthCheckResponse_msginit, arena, len);
+}
+
+UPB_INLINE int32_t grpc_health_v1_HealthCheckResponse_status(const grpc_health_v1_HealthCheckResponse *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_health_v1_HealthCheckResponse_set_status(grpc_health_v1_HealthCheckResponse *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_HEALTH_V1_HEALTH_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.c
new file mode 100644
index 0000000..baefff5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.c	
@@ -0,0 +1,165 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/lb/v1/load_balancer.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h"
+#else
+  #include  "src/proto/grpc/lb/v1/load_balancer.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/timestamp.upb.h"
+#else
+  #include  "google/protobuf/timestamp.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const grpc_lb_v1_LoadBalanceRequest_submsgs[2] = {
+  &grpc_lb_v1_ClientStats_msginit,
+  &grpc_lb_v1_InitialLoadBalanceRequest_msginit,
+};
+
+static const upb_msglayout_field grpc_lb_v1_LoadBalanceRequest__fields[2] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout grpc_lb_v1_LoadBalanceRequest_msginit = {
+  &grpc_lb_v1_LoadBalanceRequest_submsgs[0],
+  &grpc_lb_v1_LoadBalanceRequest__fields[0],
+  UPB_SIZE(8, 16), 2, false,
+};
+
+static const upb_msglayout_field grpc_lb_v1_InitialLoadBalanceRequest__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout grpc_lb_v1_InitialLoadBalanceRequest_msginit = {
+  NULL,
+  &grpc_lb_v1_InitialLoadBalanceRequest__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field grpc_lb_v1_ClientStatsPerToken__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 3, 1},
+};
+
+const upb_msglayout grpc_lb_v1_ClientStatsPerToken_msginit = {
+  NULL,
+  &grpc_lb_v1_ClientStatsPerToken__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const grpc_lb_v1_ClientStats_submsgs[2] = {
+  &google_protobuf_Timestamp_msginit,
+  &grpc_lb_v1_ClientStatsPerToken_msginit,
+};
+
+static const upb_msglayout_field grpc_lb_v1_ClientStats__fields[6] = {
+  {1, UPB_SIZE(32, 32), 0, 0, 11, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 3, 1},
+  {3, UPB_SIZE(8, 8), 0, 0, 3, 1},
+  {6, UPB_SIZE(16, 16), 0, 0, 3, 1},
+  {7, UPB_SIZE(24, 24), 0, 0, 3, 1},
+  {8, UPB_SIZE(36, 40), 0, 1, 11, 3},
+};
+
+const upb_msglayout grpc_lb_v1_ClientStats_msginit = {
+  &grpc_lb_v1_ClientStats_submsgs[0],
+  &grpc_lb_v1_ClientStats__fields[0],
+  UPB_SIZE(40, 48), 6, false,
+};
+
+static const upb_msglayout *const grpc_lb_v1_LoadBalanceResponse_submsgs[3] = {
+  &grpc_lb_v1_FallbackResponse_msginit,
+  &grpc_lb_v1_InitialLoadBalanceResponse_msginit,
+  &grpc_lb_v1_ServerList_msginit,
+};
+
+static const upb_msglayout_field grpc_lb_v1_LoadBalanceResponse__fields[3] = {
+  {1, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 1, 11, 1},
+  {2, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 2, 11, 1},
+  {3, UPB_SIZE(0, 0), UPB_SIZE(-5, -9), 0, 11, 1},
+};
+
+const upb_msglayout grpc_lb_v1_LoadBalanceResponse_msginit = {
+  &grpc_lb_v1_LoadBalanceResponse_submsgs[0],
+  &grpc_lb_v1_LoadBalanceResponse__fields[0],
+  UPB_SIZE(8, 16), 3, false,
+};
+
+static const upb_msglayout *const grpc_lb_v1_InitialLoadBalanceResponse_submsgs[1] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field grpc_lb_v1_InitialLoadBalanceResponse__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 11, 1},
+};
+
+const upb_msglayout grpc_lb_v1_InitialLoadBalanceResponse_msginit = {
+  &grpc_lb_v1_InitialLoadBalanceResponse_submsgs[0],
+  &grpc_lb_v1_InitialLoadBalanceResponse__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout *const grpc_lb_v1_ServerList_submsgs[1] = {
+  &grpc_lb_v1_Server_msginit,
+};
+
+static const upb_msglayout_field grpc_lb_v1_ServerList__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 11, 3},
+};
+
+const upb_msglayout grpc_lb_v1_ServerList_msginit = {
+  &grpc_lb_v1_ServerList_submsgs[0],
+  &grpc_lb_v1_ServerList__fields[0],
+  UPB_SIZE(4, 8), 1, false,
+};
+
+static const upb_msglayout_field grpc_lb_v1_Server__fields[4] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 12, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 5, 1},
+  {3, UPB_SIZE(16, 24), 0, 0, 9, 1},
+  {4, UPB_SIZE(4, 4), 0, 0, 8, 1},
+};
+
+const upb_msglayout grpc_lb_v1_Server_msginit = {
+  NULL,
+  &grpc_lb_v1_Server__fields[0],
+  UPB_SIZE(24, 48), 4, false,
+};
+
+const upb_msglayout grpc_lb_v1_FallbackResponse_msginit = {
+  NULL,
+  NULL,
+  UPB_SIZE(0, 0), 0, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h
new file mode 100644
index 0000000..7be83b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/src/proto/grpc/lb/v1/load_balancer.upb.h	
@@ -0,0 +1,417 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     src/proto/grpc/lb/v1/load_balancer.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_
+#define SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct grpc_lb_v1_LoadBalanceRequest;
+struct grpc_lb_v1_InitialLoadBalanceRequest;
+struct grpc_lb_v1_ClientStatsPerToken;
+struct grpc_lb_v1_ClientStats;
+struct grpc_lb_v1_LoadBalanceResponse;
+struct grpc_lb_v1_InitialLoadBalanceResponse;
+struct grpc_lb_v1_ServerList;
+struct grpc_lb_v1_Server;
+struct grpc_lb_v1_FallbackResponse;
+typedef struct grpc_lb_v1_LoadBalanceRequest grpc_lb_v1_LoadBalanceRequest;
+typedef struct grpc_lb_v1_InitialLoadBalanceRequest grpc_lb_v1_InitialLoadBalanceRequest;
+typedef struct grpc_lb_v1_ClientStatsPerToken grpc_lb_v1_ClientStatsPerToken;
+typedef struct grpc_lb_v1_ClientStats grpc_lb_v1_ClientStats;
+typedef struct grpc_lb_v1_LoadBalanceResponse grpc_lb_v1_LoadBalanceResponse;
+typedef struct grpc_lb_v1_InitialLoadBalanceResponse grpc_lb_v1_InitialLoadBalanceResponse;
+typedef struct grpc_lb_v1_ServerList grpc_lb_v1_ServerList;
+typedef struct grpc_lb_v1_Server grpc_lb_v1_Server;
+typedef struct grpc_lb_v1_FallbackResponse grpc_lb_v1_FallbackResponse;
+extern const upb_msglayout grpc_lb_v1_LoadBalanceRequest_msginit;
+extern const upb_msglayout grpc_lb_v1_InitialLoadBalanceRequest_msginit;
+extern const upb_msglayout grpc_lb_v1_ClientStatsPerToken_msginit;
+extern const upb_msglayout grpc_lb_v1_ClientStats_msginit;
+extern const upb_msglayout grpc_lb_v1_LoadBalanceResponse_msginit;
+extern const upb_msglayout grpc_lb_v1_InitialLoadBalanceResponse_msginit;
+extern const upb_msglayout grpc_lb_v1_ServerList_msginit;
+extern const upb_msglayout grpc_lb_v1_Server_msginit;
+extern const upb_msglayout grpc_lb_v1_FallbackResponse_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+
+/* grpc.lb.v1.LoadBalanceRequest */
+
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest *grpc_lb_v1_LoadBalanceRequest_new(upb_arena *arena) {
+  return (grpc_lb_v1_LoadBalanceRequest *)upb_msg_new(&grpc_lb_v1_LoadBalanceRequest_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest *grpc_lb_v1_LoadBalanceRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_LoadBalanceRequest *ret = grpc_lb_v1_LoadBalanceRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_LoadBalanceRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_LoadBalanceRequest_serialize(const grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_LoadBalanceRequest_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_initial_request = 1,
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_client_stats = 2,
+  grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_NOT_SET = 0
+} grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases;
+UPB_INLINE grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_case(const grpc_lb_v1_LoadBalanceRequest* msg) { return (grpc_lb_v1_LoadBalanceRequest_load_balance_request_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_lb_v1_LoadBalanceRequest_has_initial_request(const grpc_lb_v1_LoadBalanceRequest *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_lb_v1_InitialLoadBalanceRequest* grpc_lb_v1_LoadBalanceRequest_initial_request(const grpc_lb_v1_LoadBalanceRequest *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_InitialLoadBalanceRequest*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceRequest_has_client_stats(const grpc_lb_v1_LoadBalanceRequest *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_lb_v1_ClientStats* grpc_lb_v1_LoadBalanceRequest_client_stats(const grpc_lb_v1_LoadBalanceRequest *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_ClientStats*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+
+UPB_INLINE void grpc_lb_v1_LoadBalanceRequest_set_initial_request(grpc_lb_v1_LoadBalanceRequest *msg, grpc_lb_v1_InitialLoadBalanceRequest* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_InitialLoadBalanceRequest*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_lb_v1_InitialLoadBalanceRequest* grpc_lb_v1_LoadBalanceRequest_mutable_initial_request(grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena) {
+  struct grpc_lb_v1_InitialLoadBalanceRequest* sub = (struct grpc_lb_v1_InitialLoadBalanceRequest*)grpc_lb_v1_LoadBalanceRequest_initial_request(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_InitialLoadBalanceRequest*)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceRequest_set_initial_request(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceRequest_set_client_stats(grpc_lb_v1_LoadBalanceRequest *msg, grpc_lb_v1_ClientStats* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_ClientStats*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_lb_v1_ClientStats* grpc_lb_v1_LoadBalanceRequest_mutable_client_stats(grpc_lb_v1_LoadBalanceRequest *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ClientStats* sub = (struct grpc_lb_v1_ClientStats*)grpc_lb_v1_LoadBalanceRequest_client_stats(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_ClientStats*)upb_msg_new(&grpc_lb_v1_ClientStats_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceRequest_set_client_stats(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.InitialLoadBalanceRequest */
+
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceRequest *grpc_lb_v1_InitialLoadBalanceRequest_new(upb_arena *arena) {
+  return (grpc_lb_v1_InitialLoadBalanceRequest *)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceRequest *grpc_lb_v1_InitialLoadBalanceRequest_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_InitialLoadBalanceRequest *ret = grpc_lb_v1_InitialLoadBalanceRequest_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_InitialLoadBalanceRequest_serialize(const grpc_lb_v1_InitialLoadBalanceRequest *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_InitialLoadBalanceRequest_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_InitialLoadBalanceRequest_name(const grpc_lb_v1_InitialLoadBalanceRequest *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceRequest_set_name(grpc_lb_v1_InitialLoadBalanceRequest *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.lb.v1.ClientStatsPerToken */
+
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken *grpc_lb_v1_ClientStatsPerToken_new(upb_arena *arena) {
+  return (grpc_lb_v1_ClientStatsPerToken *)upb_msg_new(&grpc_lb_v1_ClientStatsPerToken_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken *grpc_lb_v1_ClientStatsPerToken_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ClientStatsPerToken *ret = grpc_lb_v1_ClientStatsPerToken_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ClientStatsPerToken_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ClientStatsPerToken_serialize(const grpc_lb_v1_ClientStatsPerToken *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ClientStatsPerToken_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_ClientStatsPerToken_load_balance_token(const grpc_lb_v1_ClientStatsPerToken *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStatsPerToken_num_calls(const grpc_lb_v1_ClientStatsPerToken *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void grpc_lb_v1_ClientStatsPerToken_set_load_balance_token(grpc_lb_v1_ClientStatsPerToken *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStatsPerToken_set_num_calls(grpc_lb_v1_ClientStatsPerToken *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+
+/* grpc.lb.v1.ClientStats */
+
+UPB_INLINE grpc_lb_v1_ClientStats *grpc_lb_v1_ClientStats_new(upb_arena *arena) {
+  return (grpc_lb_v1_ClientStats *)upb_msg_new(&grpc_lb_v1_ClientStats_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ClientStats *grpc_lb_v1_ClientStats_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ClientStats *ret = grpc_lb_v1_ClientStats_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ClientStats_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ClientStats_serialize(const grpc_lb_v1_ClientStats *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ClientStats_msginit, arena, len);
+}
+
+UPB_INLINE const struct google_protobuf_Timestamp* grpc_lb_v1_ClientStats_timestamp(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(32, 32)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_started(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished_with_client_failed_to_send(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE int64_t grpc_lb_v1_ClientStats_num_calls_finished_known_received(const grpc_lb_v1_ClientStats *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE const grpc_lb_v1_ClientStatsPerToken* const* grpc_lb_v1_ClientStats_calls_finished_with_drop(const grpc_lb_v1_ClientStats *msg, size_t *len) { return (const grpc_lb_v1_ClientStatsPerToken* const*)_upb_array_accessor(msg, UPB_SIZE(36, 40), len); }
+
+UPB_INLINE void grpc_lb_v1_ClientStats_set_timestamp(grpc_lb_v1_ClientStats *msg, struct google_protobuf_Timestamp* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* grpc_lb_v1_ClientStats_mutable_timestamp(grpc_lb_v1_ClientStats *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)grpc_lb_v1_ClientStats_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_ClientStats_set_timestamp(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_started(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished_with_client_failed_to_send(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void grpc_lb_v1_ClientStats_set_num_calls_finished_known_received(grpc_lb_v1_ClientStats *msg, int64_t value) {
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken** grpc_lb_v1_ClientStats_mutable_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, size_t *len) {
+  return (grpc_lb_v1_ClientStatsPerToken**)_upb_array_mutable_accessor(msg, UPB_SIZE(36, 40), len);
+}
+UPB_INLINE grpc_lb_v1_ClientStatsPerToken** grpc_lb_v1_ClientStats_resize_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, size_t len, upb_arena *arena) {
+  return (grpc_lb_v1_ClientStatsPerToken**)_upb_array_resize_accessor(msg, UPB_SIZE(36, 40), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_lb_v1_ClientStatsPerToken* grpc_lb_v1_ClientStats_add_calls_finished_with_drop(grpc_lb_v1_ClientStats *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ClientStatsPerToken* sub = (struct grpc_lb_v1_ClientStatsPerToken*)upb_msg_new(&grpc_lb_v1_ClientStatsPerToken_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(36, 40), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.lb.v1.LoadBalanceResponse */
+
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse *grpc_lb_v1_LoadBalanceResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_LoadBalanceResponse *)upb_msg_new(&grpc_lb_v1_LoadBalanceResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse *grpc_lb_v1_LoadBalanceResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_LoadBalanceResponse *ret = grpc_lb_v1_LoadBalanceResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_LoadBalanceResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_LoadBalanceResponse_serialize(const grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_LoadBalanceResponse_msginit, arena, len);
+}
+
+typedef enum {
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_initial_response = 1,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_server_list = 2,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_fallback_response = 3,
+  grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_NOT_SET = 0
+} grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases;
+UPB_INLINE grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_case(const grpc_lb_v1_LoadBalanceResponse* msg) { return (grpc_lb_v1_LoadBalanceResponse_load_balance_response_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 8)); }
+
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_initial_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 1); }
+UPB_INLINE const grpc_lb_v1_InitialLoadBalanceResponse* grpc_lb_v1_LoadBalanceResponse_initial_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_InitialLoadBalanceResponse*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 1, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_server_list(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 2); }
+UPB_INLINE const grpc_lb_v1_ServerList* grpc_lb_v1_LoadBalanceResponse_server_list(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_ServerList*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 2, NULL); }
+UPB_INLINE bool grpc_lb_v1_LoadBalanceResponse_has_fallback_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(4, 8), 3); }
+UPB_INLINE const grpc_lb_v1_FallbackResponse* grpc_lb_v1_LoadBalanceResponse_fallback_response(const grpc_lb_v1_LoadBalanceResponse *msg) { return UPB_READ_ONEOF(msg, const grpc_lb_v1_FallbackResponse*, UPB_SIZE(0, 0), UPB_SIZE(4, 8), 3, NULL); }
+
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_initial_response(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_InitialLoadBalanceResponse* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_InitialLoadBalanceResponse*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 1);
+}
+UPB_INLINE struct grpc_lb_v1_InitialLoadBalanceResponse* grpc_lb_v1_LoadBalanceResponse_mutable_initial_response(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_InitialLoadBalanceResponse* sub = (struct grpc_lb_v1_InitialLoadBalanceResponse*)grpc_lb_v1_LoadBalanceResponse_initial_response(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_InitialLoadBalanceResponse*)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_initial_response(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_server_list(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_ServerList* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_ServerList*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 2);
+}
+UPB_INLINE struct grpc_lb_v1_ServerList* grpc_lb_v1_LoadBalanceResponse_mutable_server_list(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_ServerList* sub = (struct grpc_lb_v1_ServerList*)grpc_lb_v1_LoadBalanceResponse_server_list(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_ServerList*)upb_msg_new(&grpc_lb_v1_ServerList_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_server_list(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void grpc_lb_v1_LoadBalanceResponse_set_fallback_response(grpc_lb_v1_LoadBalanceResponse *msg, grpc_lb_v1_FallbackResponse* value) {
+  UPB_WRITE_ONEOF(msg, grpc_lb_v1_FallbackResponse*, UPB_SIZE(0, 0), value, UPB_SIZE(4, 8), 3);
+}
+UPB_INLINE struct grpc_lb_v1_FallbackResponse* grpc_lb_v1_LoadBalanceResponse_mutable_fallback_response(grpc_lb_v1_LoadBalanceResponse *msg, upb_arena *arena) {
+  struct grpc_lb_v1_FallbackResponse* sub = (struct grpc_lb_v1_FallbackResponse*)grpc_lb_v1_LoadBalanceResponse_fallback_response(msg);
+  if (sub == NULL) {
+    sub = (struct grpc_lb_v1_FallbackResponse*)upb_msg_new(&grpc_lb_v1_FallbackResponse_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_LoadBalanceResponse_set_fallback_response(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.InitialLoadBalanceResponse */
+
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceResponse *grpc_lb_v1_InitialLoadBalanceResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_InitialLoadBalanceResponse *)upb_msg_new(&grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_InitialLoadBalanceResponse *grpc_lb_v1_InitialLoadBalanceResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_InitialLoadBalanceResponse *ret = grpc_lb_v1_InitialLoadBalanceResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_InitialLoadBalanceResponse_serialize(const grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_InitialLoadBalanceResponse_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_InitialLoadBalanceResponse_load_balancer_delegate(const grpc_lb_v1_InitialLoadBalanceResponse *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE const struct google_protobuf_Duration* grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval(const grpc_lb_v1_InitialLoadBalanceResponse *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceResponse_set_load_balancer_delegate(grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_InitialLoadBalanceResponse_set_client_stats_report_interval(grpc_lb_v1_InitialLoadBalanceResponse *msg, struct google_protobuf_Duration* value) {
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* grpc_lb_v1_InitialLoadBalanceResponse_mutable_client_stats_report_interval(grpc_lb_v1_InitialLoadBalanceResponse *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)grpc_lb_v1_InitialLoadBalanceResponse_client_stats_report_interval(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    grpc_lb_v1_InitialLoadBalanceResponse_set_client_stats_report_interval(msg, sub);
+  }
+  return sub;
+}
+
+/* grpc.lb.v1.ServerList */
+
+UPB_INLINE grpc_lb_v1_ServerList *grpc_lb_v1_ServerList_new(upb_arena *arena) {
+  return (grpc_lb_v1_ServerList *)upb_msg_new(&grpc_lb_v1_ServerList_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_ServerList *grpc_lb_v1_ServerList_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_ServerList *ret = grpc_lb_v1_ServerList_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_ServerList_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_ServerList_serialize(const grpc_lb_v1_ServerList *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_ServerList_msginit, arena, len);
+}
+
+UPB_INLINE const grpc_lb_v1_Server* const* grpc_lb_v1_ServerList_servers(const grpc_lb_v1_ServerList *msg, size_t *len) { return (const grpc_lb_v1_Server* const*)_upb_array_accessor(msg, UPB_SIZE(0, 0), len); }
+
+UPB_INLINE grpc_lb_v1_Server** grpc_lb_v1_ServerList_mutable_servers(grpc_lb_v1_ServerList *msg, size_t *len) {
+  return (grpc_lb_v1_Server**)_upb_array_mutable_accessor(msg, UPB_SIZE(0, 0), len);
+}
+UPB_INLINE grpc_lb_v1_Server** grpc_lb_v1_ServerList_resize_servers(grpc_lb_v1_ServerList *msg, size_t len, upb_arena *arena) {
+  return (grpc_lb_v1_Server**)_upb_array_resize_accessor(msg, UPB_SIZE(0, 0), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct grpc_lb_v1_Server* grpc_lb_v1_ServerList_add_servers(grpc_lb_v1_ServerList *msg, upb_arena *arena) {
+  struct grpc_lb_v1_Server* sub = (struct grpc_lb_v1_Server*)upb_msg_new(&grpc_lb_v1_Server_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(0, 0), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* grpc.lb.v1.Server */
+
+UPB_INLINE grpc_lb_v1_Server *grpc_lb_v1_Server_new(upb_arena *arena) {
+  return (grpc_lb_v1_Server *)upb_msg_new(&grpc_lb_v1_Server_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_Server *grpc_lb_v1_Server_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_Server *ret = grpc_lb_v1_Server_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_Server_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_Server_serialize(const grpc_lb_v1_Server *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_Server_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview grpc_lb_v1_Server_ip_address(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t grpc_lb_v1_Server_port(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview grpc_lb_v1_Server_load_balance_token(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)); }
+UPB_INLINE bool grpc_lb_v1_Server_drop(const grpc_lb_v1_Server *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+
+UPB_INLINE void grpc_lb_v1_Server_set_ip_address(grpc_lb_v1_Server *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_port(grpc_lb_v1_Server *msg, int32_t value) {
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_load_balance_token(grpc_lb_v1_Server *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE void grpc_lb_v1_Server_set_drop(grpc_lb_v1_Server *msg, bool value) {
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+
+/* grpc.lb.v1.FallbackResponse */
+
+UPB_INLINE grpc_lb_v1_FallbackResponse *grpc_lb_v1_FallbackResponse_new(upb_arena *arena) {
+  return (grpc_lb_v1_FallbackResponse *)upb_msg_new(&grpc_lb_v1_FallbackResponse_msginit, arena);
+}
+UPB_INLINE grpc_lb_v1_FallbackResponse *grpc_lb_v1_FallbackResponse_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  grpc_lb_v1_FallbackResponse *ret = grpc_lb_v1_FallbackResponse_new(arena);
+  return (ret && upb_decode(buf, size, ret, &grpc_lb_v1_FallbackResponse_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *grpc_lb_v1_FallbackResponse_serialize(const grpc_lb_v1_FallbackResponse *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &grpc_lb_v1_FallbackResponse_msginit, arena, len);
+}
+
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* SRC_PROTO_GRPC_LB_V1_LOAD_BALANCER_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.c
new file mode 100644
index 0000000..f6b0cc4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.c	
@@ -0,0 +1,68 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/migrate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/migrate.upb.h"
+#else
+  #include  "udpa/annotations/migrate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout_field udpa_annotations_MigrateAnnotation__fields[1] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout udpa_annotations_MigrateAnnotation_msginit = {
+  NULL,
+  &udpa_annotations_MigrateAnnotation__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+static const upb_msglayout_field udpa_annotations_FieldMigrateAnnotation__fields[2] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 9, 1},
+  {2, UPB_SIZE(8, 16), 0, 0, 9, 1},
+};
+
+const upb_msglayout udpa_annotations_FieldMigrateAnnotation_msginit = {
+  NULL,
+  &udpa_annotations_FieldMigrateAnnotation__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field udpa_annotations_FileMigrateAnnotation__fields[1] = {
+  {2, UPB_SIZE(0, 0), 0, 0, 9, 1},
+};
+
+const upb_msglayout udpa_annotations_FileMigrateAnnotation_msginit = {
+  NULL,
+  &udpa_annotations_FileMigrateAnnotation__fields[0],
+  UPB_SIZE(8, 16), 1, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h
new file mode 100644
index 0000000..b1d9426
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/migrate.upb.h	
@@ -0,0 +1,128 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/migrate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_
+#define UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct udpa_annotations_MigrateAnnotation;
+struct udpa_annotations_FieldMigrateAnnotation;
+struct udpa_annotations_FileMigrateAnnotation;
+typedef struct udpa_annotations_MigrateAnnotation udpa_annotations_MigrateAnnotation;
+typedef struct udpa_annotations_FieldMigrateAnnotation udpa_annotations_FieldMigrateAnnotation;
+typedef struct udpa_annotations_FileMigrateAnnotation udpa_annotations_FileMigrateAnnotation;
+extern const upb_msglayout udpa_annotations_MigrateAnnotation_msginit;
+extern const upb_msglayout udpa_annotations_FieldMigrateAnnotation_msginit;
+extern const upb_msglayout udpa_annotations_FileMigrateAnnotation_msginit;
+
+
+/* udpa.annotations.MigrateAnnotation */
+
+UPB_INLINE udpa_annotations_MigrateAnnotation *udpa_annotations_MigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_MigrateAnnotation *)upb_msg_new(&udpa_annotations_MigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_MigrateAnnotation *udpa_annotations_MigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_MigrateAnnotation *ret = udpa_annotations_MigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_MigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_MigrateAnnotation_serialize(const udpa_annotations_MigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_MigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_MigrateAnnotation_rename(const udpa_annotations_MigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_annotations_MigrateAnnotation_set_rename(udpa_annotations_MigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+/* udpa.annotations.FieldMigrateAnnotation */
+
+UPB_INLINE udpa_annotations_FieldMigrateAnnotation *udpa_annotations_FieldMigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_FieldMigrateAnnotation *)upb_msg_new(&udpa_annotations_FieldMigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_FieldMigrateAnnotation *udpa_annotations_FieldMigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_FieldMigrateAnnotation *ret = udpa_annotations_FieldMigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_FieldMigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_FieldMigrateAnnotation_serialize(const udpa_annotations_FieldMigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_FieldMigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_FieldMigrateAnnotation_rename(const udpa_annotations_FieldMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+UPB_INLINE upb_strview udpa_annotations_FieldMigrateAnnotation_oneof_promotion(const udpa_annotations_FieldMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)); }
+
+UPB_INLINE void udpa_annotations_FieldMigrateAnnotation_set_rename(udpa_annotations_FieldMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void udpa_annotations_FieldMigrateAnnotation_set_oneof_promotion(udpa_annotations_FieldMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 16)) = value;
+}
+
+/* udpa.annotations.FileMigrateAnnotation */
+
+UPB_INLINE udpa_annotations_FileMigrateAnnotation *udpa_annotations_FileMigrateAnnotation_new(upb_arena *arena) {
+  return (udpa_annotations_FileMigrateAnnotation *)upb_msg_new(&udpa_annotations_FileMigrateAnnotation_msginit, arena);
+}
+UPB_INLINE udpa_annotations_FileMigrateAnnotation *udpa_annotations_FileMigrateAnnotation_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_annotations_FileMigrateAnnotation *ret = udpa_annotations_FileMigrateAnnotation_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_annotations_FileMigrateAnnotation_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_annotations_FileMigrateAnnotation_serialize(const udpa_annotations_FileMigrateAnnotation *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_annotations_FileMigrateAnnotation_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_annotations_FileMigrateAnnotation_move_to_package(const udpa_annotations_FileMigrateAnnotation *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_annotations_FileMigrateAnnotation_set_move_to_package(udpa_annotations_FileMigrateAnnotation *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_ANNOTATIONS_MIGRATE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.c
new file mode 100644
index 0000000..704708b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.c	
@@ -0,0 +1,37 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/sensitive.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h"
+#else
+  #include  "udpa/annotations/sensitive.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h
new file mode 100644
index 0000000..bf469fe
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/annotations/sensitive.upb.h	
@@ -0,0 +1,54 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/annotations/sensitive.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_
+#define UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_ANNOTATIONS_SENSITIVE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.c
new file mode 100644
index 0000000..a9342d0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.c	
@@ -0,0 +1,78 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/data/orca/v1/orca_load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h"
+#else
+  #include  "udpa/data/orca/v1/orca_load_report.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const udpa_data_orca_v1_OrcaLoadReport_submsgs[2] = {
+  &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit,
+  &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit,
+};
+
+static const upb_msglayout_field udpa_data_orca_v1_OrcaLoadReport__fields[5] = {
+  {1, UPB_SIZE(0, 0), 0, 0, 1, 1},
+  {2, UPB_SIZE(8, 8), 0, 0, 1, 1},
+  {3, UPB_SIZE(16, 16), 0, 0, 4, 1},
+  {4, UPB_SIZE(24, 24), 0, 0, 11, 3},
+  {5, UPB_SIZE(28, 32), 0, 1, 11, 3},
+};
+
+const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_msginit = {
+  &udpa_data_orca_v1_OrcaLoadReport_submsgs[0],
+  &udpa_data_orca_v1_OrcaLoadReport__fields[0],
+  UPB_SIZE(32, 40), 5, false,
+};
+
+static const upb_msglayout_field udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 1, 1},
+};
+
+const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit = {
+  NULL,
+  &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+static const upb_msglayout_field udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry__fields[2] = {
+  {1, UPB_SIZE(8, 8), 0, 0, 9, 1},
+  {2, UPB_SIZE(0, 0), 0, 0, 1, 1},
+};
+
+const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit = {
+  NULL,
+  &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry__fields[0],
+  UPB_SIZE(16, 32), 2, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h
new file mode 100644
index 0000000..b484173
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/udpa/data/orca/v1/orca_load_report.upb.h	
@@ -0,0 +1,168 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     udpa/data/orca/v1/orca_load_report.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_
+#define UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct udpa_data_orca_v1_OrcaLoadReport;
+struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry;
+struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry;
+typedef struct udpa_data_orca_v1_OrcaLoadReport udpa_data_orca_v1_OrcaLoadReport;
+typedef struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry;
+typedef struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_msginit;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit;
+extern const upb_msglayout udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit;
+
+
+/* udpa.data.orca.v1.OrcaLoadReport */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport *udpa_data_orca_v1_OrcaLoadReport_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport *udpa_data_orca_v1_OrcaLoadReport_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport *ret = udpa_data_orca_v1_OrcaLoadReport_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_serialize(const udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_msginit, arena, len);
+}
+
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_cpu_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_mem_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+UPB_INLINE uint64_t udpa_data_orca_v1_OrcaLoadReport_rps(const udpa_data_orca_v1_OrcaLoadReport *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* const* udpa_data_orca_v1_OrcaLoadReport_request_cost(const udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) { return (const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* const* udpa_data_orca_v1_OrcaLoadReport_utilization(const udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) { return (const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_cpu_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_mem_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_set_rps(udpa_data_orca_v1_OrcaLoadReport *msg, uint64_t value) {
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry** udpa_data_orca_v1_OrcaLoadReport_mutable_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry** udpa_data_orca_v1_OrcaLoadReport_resize_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, size_t len, upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* udpa_data_orca_v1_OrcaLoadReport_add_request_cost(udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena) {
+  struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry* sub = (struct udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry*)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry** udpa_data_orca_v1_OrcaLoadReport_mutable_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, size_t *len) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry** udpa_data_orca_v1_OrcaLoadReport_resize_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, size_t len, upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* udpa_data_orca_v1_OrcaLoadReport_add_utilization(udpa_data_orca_v1_OrcaLoadReport *msg, upb_arena *arena) {
+  struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry* sub = (struct udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry*)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* udpa.data.orca.v1.OrcaLoadReport.RequestCostEntry */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *ret = udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_serialize(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_key(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_value(const udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_set_key(udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry_set_value(udpa_data_orca_v1_OrcaLoadReport_RequestCostEntry *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+/* udpa.data.orca.v1.OrcaLoadReport.UtilizationEntry */
+
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_new(upb_arena *arena) {
+  return (udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *)upb_msg_new(&udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena);
+}
+UPB_INLINE udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *ret = udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_new(arena);
+  return (ret && upb_decode(buf, size, ret, &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_serialize(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_msginit, arena, len);
+}
+
+UPB_INLINE upb_strview udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_key(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)); }
+UPB_INLINE double udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_value(const udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)); }
+
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_set_key(udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, upb_strview value) {
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry_set_value(udpa_data_orca_v1_OrcaLoadReport_UtilizationEntry *msg, double value) {
+  UPB_FIELD_AT(msg, double, UPB_SIZE(0, 0)) = value;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UDPA_DATA_ORCA_V1_ORCA_LOAD_REPORT_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.c b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.c
new file mode 100644
index 0000000..fc88082
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.c	
@@ -0,0 +1,475 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     validate/validate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#include <stddef.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/validate/validate.upb.h"
+#else
+  #include  "validate/validate.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/descriptor.upb.h"
+#else
+  #include  "google/protobuf/descriptor.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/duration.upb.h"
+#else
+  #include  "google/protobuf/duration.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/google/protobuf/timestamp.upb.h"
+#else
+  #include  "google/protobuf/timestamp.upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+static const upb_msglayout *const validate_FieldRules_submsgs[22] = {
+  &validate_AnyRules_msginit,
+  &validate_BoolRules_msginit,
+  &validate_BytesRules_msginit,
+  &validate_DoubleRules_msginit,
+  &validate_DurationRules_msginit,
+  &validate_EnumRules_msginit,
+  &validate_Fixed32Rules_msginit,
+  &validate_Fixed64Rules_msginit,
+  &validate_FloatRules_msginit,
+  &validate_Int32Rules_msginit,
+  &validate_Int64Rules_msginit,
+  &validate_MapRules_msginit,
+  &validate_MessageRules_msginit,
+  &validate_RepeatedRules_msginit,
+  &validate_SFixed32Rules_msginit,
+  &validate_SFixed64Rules_msginit,
+  &validate_SInt32Rules_msginit,
+  &validate_SInt64Rules_msginit,
+  &validate_StringRules_msginit,
+  &validate_TimestampRules_msginit,
+  &validate_UInt32Rules_msginit,
+  &validate_UInt64Rules_msginit,
+};
+
+static const upb_msglayout_field validate_FieldRules__fields[22] = {
+  {1, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 8, 11, 1},
+  {2, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 3, 11, 1},
+  {3, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 9, 11, 1},
+  {4, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 10, 11, 1},
+  {5, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 20, 11, 1},
+  {6, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 21, 11, 1},
+  {7, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 16, 11, 1},
+  {8, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 17, 11, 1},
+  {9, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 6, 11, 1},
+  {10, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 7, 11, 1},
+  {11, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 14, 11, 1},
+  {12, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 15, 11, 1},
+  {13, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 1, 11, 1},
+  {14, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 18, 11, 1},
+  {15, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 2, 11, 1},
+  {16, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 5, 11, 1},
+  {17, UPB_SIZE(4, 8), 1, 12, 11, 1},
+  {18, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 13, 11, 1},
+  {19, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 11, 11, 1},
+  {20, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 0, 11, 1},
+  {21, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 4, 11, 1},
+  {22, UPB_SIZE(8, 16), UPB_SIZE(-13, -25), 19, 11, 1},
+};
+
+const upb_msglayout validate_FieldRules_msginit = {
+  &validate_FieldRules_submsgs[0],
+  &validate_FieldRules__fields[0],
+  UPB_SIZE(16, 32), 22, false,
+};
+
+static const upb_msglayout_field validate_FloatRules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 2, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 2, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 2, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 2, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 2, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 2, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 2, 3},
+};
+
+const upb_msglayout validate_FloatRules_msginit = {
+  NULL,
+  &validate_FloatRules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_DoubleRules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 1, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 1, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 1, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 1, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 1, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 1, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 1, 3},
+};
+
+const upb_msglayout validate_DoubleRules_msginit = {
+  NULL,
+  &validate_DoubleRules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_Int32Rules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 5, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 5, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 5, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 5, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 5, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 5, 3},
+};
+
+const upb_msglayout validate_Int32Rules_msginit = {
+  NULL,
+  &validate_Int32Rules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_Int64Rules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 3, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 3, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 3, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 3, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 3, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 3, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 3, 3},
+};
+
+const upb_msglayout validate_Int64Rules_msginit = {
+  NULL,
+  &validate_Int64Rules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_UInt32Rules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 13, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 13, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 13, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 13, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 13, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 13, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 13, 3},
+};
+
+const upb_msglayout validate_UInt32Rules_msginit = {
+  NULL,
+  &validate_UInt32Rules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_UInt64Rules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 4, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 4, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 4, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 4, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 4, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 4, 3},
+};
+
+const upb_msglayout validate_UInt64Rules_msginit = {
+  NULL,
+  &validate_UInt64Rules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_SInt32Rules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 17, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 17, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 17, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 17, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 17, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 17, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 17, 3},
+};
+
+const upb_msglayout validate_SInt32Rules_msginit = {
+  NULL,
+  &validate_SInt32Rules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_SInt64Rules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 18, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 18, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 18, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 18, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 18, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 18, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 18, 3},
+};
+
+const upb_msglayout validate_SInt64Rules_msginit = {
+  NULL,
+  &validate_SInt64Rules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_Fixed32Rules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 7, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 7, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 7, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 7, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 7, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 7, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 7, 3},
+};
+
+const upb_msglayout validate_Fixed32Rules_msginit = {
+  NULL,
+  &validate_Fixed32Rules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_Fixed64Rules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 6, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 6, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 6, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 6, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 6, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 6, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 6, 3},
+};
+
+const upb_msglayout validate_Fixed64Rules_msginit = {
+  NULL,
+  &validate_Fixed64Rules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_SFixed32Rules__fields[7] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 15, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 15, 1},
+  {3, UPB_SIZE(12, 12), 3, 0, 15, 1},
+  {4, UPB_SIZE(16, 16), 4, 0, 15, 1},
+  {5, UPB_SIZE(20, 20), 5, 0, 15, 1},
+  {6, UPB_SIZE(24, 24), 0, 0, 15, 3},
+  {7, UPB_SIZE(28, 32), 0, 0, 15, 3},
+};
+
+const upb_msglayout validate_SFixed32Rules_msginit = {
+  NULL,
+  &validate_SFixed32Rules__fields[0],
+  UPB_SIZE(32, 40), 7, false,
+};
+
+static const upb_msglayout_field validate_SFixed64Rules__fields[7] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 16, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 16, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 16, 1},
+  {4, UPB_SIZE(32, 32), 4, 0, 16, 1},
+  {5, UPB_SIZE(40, 40), 5, 0, 16, 1},
+  {6, UPB_SIZE(48, 48), 0, 0, 16, 3},
+  {7, UPB_SIZE(52, 56), 0, 0, 16, 3},
+};
+
+const upb_msglayout validate_SFixed64Rules_msginit = {
+  NULL,
+  &validate_SFixed64Rules__fields[0],
+  UPB_SIZE(56, 64), 7, false,
+};
+
+static const upb_msglayout_field validate_BoolRules__fields[1] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+};
+
+const upb_msglayout validate_BoolRules_msginit = {
+  NULL,
+  &validate_BoolRules__fields[0],
+  UPB_SIZE(2, 2), 1, false,
+};
+
+static const upb_msglayout_field validate_StringRules__fields[24] = {
+  {1, UPB_SIZE(56, 56), 7, 0, 9, 1},
+  {2, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {3, UPB_SIZE(16, 16), 2, 0, 4, 1},
+  {4, UPB_SIZE(24, 24), 3, 0, 4, 1},
+  {5, UPB_SIZE(32, 32), 4, 0, 4, 1},
+  {6, UPB_SIZE(64, 72), 8, 0, 9, 1},
+  {7, UPB_SIZE(72, 88), 9, 0, 9, 1},
+  {8, UPB_SIZE(80, 104), 10, 0, 9, 1},
+  {9, UPB_SIZE(88, 120), 11, 0, 9, 1},
+  {10, UPB_SIZE(104, 152), 0, 0, 9, 3},
+  {11, UPB_SIZE(108, 160), 0, 0, 9, 3},
+  {12, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {13, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {14, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {15, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {16, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {17, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {18, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {19, UPB_SIZE(40, 40), 5, 0, 4, 1},
+  {20, UPB_SIZE(48, 48), 6, 0, 4, 1},
+  {21, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {22, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 8, 1},
+  {23, UPB_SIZE(96, 136), 12, 0, 9, 1},
+  {24, UPB_SIZE(112, 168), UPB_SIZE(-121, -177), 0, 14, 1},
+};
+
+const upb_msglayout validate_StringRules_msginit = {
+  NULL,
+  &validate_StringRules__fields[0],
+  UPB_SIZE(128, 192), 24, false,
+};
+
+static const upb_msglayout_field validate_BytesRules__fields[13] = {
+  {1, UPB_SIZE(32, 32), 4, 0, 12, 1},
+  {2, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {3, UPB_SIZE(16, 16), 2, 0, 4, 1},
+  {4, UPB_SIZE(40, 48), 5, 0, 9, 1},
+  {5, UPB_SIZE(48, 64), 6, 0, 12, 1},
+  {6, UPB_SIZE(56, 80), 7, 0, 12, 1},
+  {7, UPB_SIZE(64, 96), 8, 0, 12, 1},
+  {8, UPB_SIZE(72, 112), 0, 0, 12, 3},
+  {9, UPB_SIZE(76, 120), 0, 0, 12, 3},
+  {10, UPB_SIZE(80, 128), UPB_SIZE(-85, -133), 0, 8, 1},
+  {11, UPB_SIZE(80, 128), UPB_SIZE(-85, -133), 0, 8, 1},
+  {12, UPB_SIZE(80, 128), UPB_SIZE(-85, -133), 0, 8, 1},
+  {13, UPB_SIZE(24, 24), 3, 0, 4, 1},
+};
+
+const upb_msglayout validate_BytesRules_msginit = {
+  NULL,
+  &validate_BytesRules__fields[0],
+  UPB_SIZE(88, 144), 13, false,
+};
+
+static const upb_msglayout_field validate_EnumRules__fields[4] = {
+  {1, UPB_SIZE(4, 4), 1, 0, 5, 1},
+  {2, UPB_SIZE(8, 8), 2, 0, 8, 1},
+  {3, UPB_SIZE(12, 16), 0, 0, 5, 3},
+  {4, UPB_SIZE(16, 24), 0, 0, 5, 3},
+};
+
+const upb_msglayout validate_EnumRules_msginit = {
+  NULL,
+  &validate_EnumRules__fields[0],
+  UPB_SIZE(20, 32), 4, false,
+};
+
+static const upb_msglayout_field validate_MessageRules__fields[2] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {2, UPB_SIZE(2, 2), 2, 0, 8, 1},
+};
+
+const upb_msglayout validate_MessageRules_msginit = {
+  NULL,
+  &validate_MessageRules__fields[0],
+  UPB_SIZE(3, 3), 2, false,
+};
+
+static const upb_msglayout *const validate_RepeatedRules_submsgs[1] = {
+  &validate_FieldRules_msginit,
+};
+
+static const upb_msglayout_field validate_RepeatedRules__fields[4] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 4, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 8, 1},
+  {4, UPB_SIZE(28, 32), 4, 0, 11, 1},
+};
+
+const upb_msglayout validate_RepeatedRules_msginit = {
+  &validate_RepeatedRules_submsgs[0],
+  &validate_RepeatedRules__fields[0],
+  UPB_SIZE(32, 40), 4, false,
+};
+
+static const upb_msglayout *const validate_MapRules_submsgs[2] = {
+  &validate_FieldRules_msginit,
+};
+
+static const upb_msglayout_field validate_MapRules__fields[5] = {
+  {1, UPB_SIZE(8, 8), 1, 0, 4, 1},
+  {2, UPB_SIZE(16, 16), 2, 0, 4, 1},
+  {3, UPB_SIZE(24, 24), 3, 0, 8, 1},
+  {4, UPB_SIZE(28, 32), 4, 0, 11, 1},
+  {5, UPB_SIZE(32, 40), 5, 0, 11, 1},
+};
+
+const upb_msglayout validate_MapRules_msginit = {
+  &validate_MapRules_submsgs[0],
+  &validate_MapRules__fields[0],
+  UPB_SIZE(40, 48), 5, false,
+};
+
+static const upb_msglayout_field validate_AnyRules__fields[3] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {2, UPB_SIZE(4, 8), 0, 0, 9, 3},
+  {3, UPB_SIZE(8, 16), 0, 0, 9, 3},
+};
+
+const upb_msglayout validate_AnyRules_msginit = {
+  NULL,
+  &validate_AnyRules__fields[0],
+  UPB_SIZE(12, 24), 3, false,
+};
+
+static const upb_msglayout *const validate_DurationRules_submsgs[7] = {
+  &google_protobuf_Duration_msginit,
+};
+
+static const upb_msglayout_field validate_DurationRules__fields[8] = {
+  {1, UPB_SIZE(1, 1), 1, 0, 8, 1},
+  {2, UPB_SIZE(4, 8), 2, 0, 11, 1},
+  {3, UPB_SIZE(8, 16), 3, 0, 11, 1},
+  {4, UPB_SIZE(12, 24), 4, 0, 11, 1},
+  {5, UPB_SIZE(16, 32), 5, 0, 11, 1},
+  {6, UPB_SIZE(20, 40), 6, 0, 11, 1},
+  {7, UPB_SIZE(24, 48), 0, 0, 11, 3},
+  {8, UPB_SIZE(28, 56), 0, 0, 11, 3},
+};
+
+const upb_msglayout validate_DurationRules_msginit = {
+  &validate_DurationRules_submsgs[0],
+  &validate_DurationRules__fields[0],
+  UPB_SIZE(32, 64), 8, false,
+};
+
+static const upb_msglayout *const validate_TimestampRules_submsgs[6] = {
+  &google_protobuf_Duration_msginit,
+  &google_protobuf_Timestamp_msginit,
+};
+
+static const upb_msglayout_field validate_TimestampRules__fields[9] = {
+  {1, UPB_SIZE(2, 2), 1, 0, 8, 1},
+  {2, UPB_SIZE(8, 8), 4, 1, 11, 1},
+  {3, UPB_SIZE(12, 16), 5, 1, 11, 1},
+  {4, UPB_SIZE(16, 24), 6, 1, 11, 1},
+  {5, UPB_SIZE(20, 32), 7, 1, 11, 1},
+  {6, UPB_SIZE(24, 40), 8, 1, 11, 1},
+  {7, UPB_SIZE(3, 3), 2, 0, 8, 1},
+  {8, UPB_SIZE(4, 4), 3, 0, 8, 1},
+  {9, UPB_SIZE(28, 48), 9, 0, 11, 1},
+};
+
+const upb_msglayout validate_TimestampRules_msginit = {
+  &validate_TimestampRules_submsgs[0],
+  &validate_TimestampRules__fields[0],
+  UPB_SIZE(32, 56), 9, false,
+};
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.h b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.h
new file mode 100644
index 0000000..72cb6cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/ext/upb-generated/validate/validate.upb.h	
@@ -0,0 +1,2091 @@
+/* This file was generated by upbc (the upb compiler) from the input
+ * file:
+ *
+ *     validate/validate.proto
+ *
+ * Do not edit -- your changes will be discarded when the file is
+ * regenerated. */
+
+#ifndef VALIDATE_VALIDATE_PROTO_UPB_H_
+#define VALIDATE_VALIDATE_PROTO_UPB_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/generated_util.h"
+#else
+  #include  "upb/generated_util.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct validate_FieldRules;
+struct validate_FloatRules;
+struct validate_DoubleRules;
+struct validate_Int32Rules;
+struct validate_Int64Rules;
+struct validate_UInt32Rules;
+struct validate_UInt64Rules;
+struct validate_SInt32Rules;
+struct validate_SInt64Rules;
+struct validate_Fixed32Rules;
+struct validate_Fixed64Rules;
+struct validate_SFixed32Rules;
+struct validate_SFixed64Rules;
+struct validate_BoolRules;
+struct validate_StringRules;
+struct validate_BytesRules;
+struct validate_EnumRules;
+struct validate_MessageRules;
+struct validate_RepeatedRules;
+struct validate_MapRules;
+struct validate_AnyRules;
+struct validate_DurationRules;
+struct validate_TimestampRules;
+typedef struct validate_FieldRules validate_FieldRules;
+typedef struct validate_FloatRules validate_FloatRules;
+typedef struct validate_DoubleRules validate_DoubleRules;
+typedef struct validate_Int32Rules validate_Int32Rules;
+typedef struct validate_Int64Rules validate_Int64Rules;
+typedef struct validate_UInt32Rules validate_UInt32Rules;
+typedef struct validate_UInt64Rules validate_UInt64Rules;
+typedef struct validate_SInt32Rules validate_SInt32Rules;
+typedef struct validate_SInt64Rules validate_SInt64Rules;
+typedef struct validate_Fixed32Rules validate_Fixed32Rules;
+typedef struct validate_Fixed64Rules validate_Fixed64Rules;
+typedef struct validate_SFixed32Rules validate_SFixed32Rules;
+typedef struct validate_SFixed64Rules validate_SFixed64Rules;
+typedef struct validate_BoolRules validate_BoolRules;
+typedef struct validate_StringRules validate_StringRules;
+typedef struct validate_BytesRules validate_BytesRules;
+typedef struct validate_EnumRules validate_EnumRules;
+typedef struct validate_MessageRules validate_MessageRules;
+typedef struct validate_RepeatedRules validate_RepeatedRules;
+typedef struct validate_MapRules validate_MapRules;
+typedef struct validate_AnyRules validate_AnyRules;
+typedef struct validate_DurationRules validate_DurationRules;
+typedef struct validate_TimestampRules validate_TimestampRules;
+extern const upb_msglayout validate_FieldRules_msginit;
+extern const upb_msglayout validate_FloatRules_msginit;
+extern const upb_msglayout validate_DoubleRules_msginit;
+extern const upb_msglayout validate_Int32Rules_msginit;
+extern const upb_msglayout validate_Int64Rules_msginit;
+extern const upb_msglayout validate_UInt32Rules_msginit;
+extern const upb_msglayout validate_UInt64Rules_msginit;
+extern const upb_msglayout validate_SInt32Rules_msginit;
+extern const upb_msglayout validate_SInt64Rules_msginit;
+extern const upb_msglayout validate_Fixed32Rules_msginit;
+extern const upb_msglayout validate_Fixed64Rules_msginit;
+extern const upb_msglayout validate_SFixed32Rules_msginit;
+extern const upb_msglayout validate_SFixed64Rules_msginit;
+extern const upb_msglayout validate_BoolRules_msginit;
+extern const upb_msglayout validate_StringRules_msginit;
+extern const upb_msglayout validate_BytesRules_msginit;
+extern const upb_msglayout validate_EnumRules_msginit;
+extern const upb_msglayout validate_MessageRules_msginit;
+extern const upb_msglayout validate_RepeatedRules_msginit;
+extern const upb_msglayout validate_MapRules_msginit;
+extern const upb_msglayout validate_AnyRules_msginit;
+extern const upb_msglayout validate_DurationRules_msginit;
+extern const upb_msglayout validate_TimestampRules_msginit;
+struct google_protobuf_Duration;
+struct google_protobuf_Timestamp;
+extern const upb_msglayout google_protobuf_Duration_msginit;
+extern const upb_msglayout google_protobuf_Timestamp_msginit;
+
+typedef enum {
+  validate_UNKNOWN = 0,
+  validate_HTTP_HEADER_NAME = 1,
+  validate_HTTP_HEADER_VALUE = 2
+} validate_KnownRegex;
+
+
+/* validate.FieldRules */
+
+UPB_INLINE validate_FieldRules *validate_FieldRules_new(upb_arena *arena) {
+  return (validate_FieldRules *)upb_msg_new(&validate_FieldRules_msginit, arena);
+}
+UPB_INLINE validate_FieldRules *validate_FieldRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_FieldRules *ret = validate_FieldRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_FieldRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_FieldRules_serialize(const validate_FieldRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_FieldRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_FieldRules_type_float = 1,
+  validate_FieldRules_type_double = 2,
+  validate_FieldRules_type_int32 = 3,
+  validate_FieldRules_type_int64 = 4,
+  validate_FieldRules_type_uint32 = 5,
+  validate_FieldRules_type_uint64 = 6,
+  validate_FieldRules_type_sint32 = 7,
+  validate_FieldRules_type_sint64 = 8,
+  validate_FieldRules_type_fixed32 = 9,
+  validate_FieldRules_type_fixed64 = 10,
+  validate_FieldRules_type_sfixed32 = 11,
+  validate_FieldRules_type_sfixed64 = 12,
+  validate_FieldRules_type_bool = 13,
+  validate_FieldRules_type_string = 14,
+  validate_FieldRules_type_bytes = 15,
+  validate_FieldRules_type_enum = 16,
+  validate_FieldRules_type_repeated = 18,
+  validate_FieldRules_type_map = 19,
+  validate_FieldRules_type_any = 20,
+  validate_FieldRules_type_duration = 21,
+  validate_FieldRules_type_timestamp = 22,
+  validate_FieldRules_type_NOT_SET = 0
+} validate_FieldRules_type_oneofcases;
+UPB_INLINE validate_FieldRules_type_oneofcases validate_FieldRules_type_case(const validate_FieldRules* msg) { return (validate_FieldRules_type_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 24)); }
+
+UPB_INLINE bool validate_FieldRules_has_float(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 1); }
+UPB_INLINE const validate_FloatRules* validate_FieldRules_float(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_FloatRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 1, NULL); }
+UPB_INLINE bool validate_FieldRules_has_double(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 2); }
+UPB_INLINE const validate_DoubleRules* validate_FieldRules_double(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_DoubleRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 2, NULL); }
+UPB_INLINE bool validate_FieldRules_has_int32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 3); }
+UPB_INLINE const validate_Int32Rules* validate_FieldRules_int32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Int32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 3, NULL); }
+UPB_INLINE bool validate_FieldRules_has_int64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 4); }
+UPB_INLINE const validate_Int64Rules* validate_FieldRules_int64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Int64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 4, NULL); }
+UPB_INLINE bool validate_FieldRules_has_uint32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 5); }
+UPB_INLINE const validate_UInt32Rules* validate_FieldRules_uint32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_UInt32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 5, NULL); }
+UPB_INLINE bool validate_FieldRules_has_uint64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 6); }
+UPB_INLINE const validate_UInt64Rules* validate_FieldRules_uint64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_UInt64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 6, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sint32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 7); }
+UPB_INLINE const validate_SInt32Rules* validate_FieldRules_sint32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SInt32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 7, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sint64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 8); }
+UPB_INLINE const validate_SInt64Rules* validate_FieldRules_sint64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SInt64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 8, NULL); }
+UPB_INLINE bool validate_FieldRules_has_fixed32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 9); }
+UPB_INLINE const validate_Fixed32Rules* validate_FieldRules_fixed32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Fixed32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 9, NULL); }
+UPB_INLINE bool validate_FieldRules_has_fixed64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 10); }
+UPB_INLINE const validate_Fixed64Rules* validate_FieldRules_fixed64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_Fixed64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 10, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sfixed32(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 11); }
+UPB_INLINE const validate_SFixed32Rules* validate_FieldRules_sfixed32(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SFixed32Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 11, NULL); }
+UPB_INLINE bool validate_FieldRules_has_sfixed64(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 12); }
+UPB_INLINE const validate_SFixed64Rules* validate_FieldRules_sfixed64(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_SFixed64Rules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 12, NULL); }
+UPB_INLINE bool validate_FieldRules_has_bool(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 13); }
+UPB_INLINE const validate_BoolRules* validate_FieldRules_bool(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_BoolRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 13, NULL); }
+UPB_INLINE bool validate_FieldRules_has_string(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 14); }
+UPB_INLINE const validate_StringRules* validate_FieldRules_string(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_StringRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 14, NULL); }
+UPB_INLINE bool validate_FieldRules_has_bytes(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 15); }
+UPB_INLINE const validate_BytesRules* validate_FieldRules_bytes(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_BytesRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 15, NULL); }
+UPB_INLINE bool validate_FieldRules_has_enum(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 16); }
+UPB_INLINE const validate_EnumRules* validate_FieldRules_enum(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_EnumRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 16, NULL); }
+UPB_INLINE bool validate_FieldRules_has_message(const validate_FieldRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE const validate_MessageRules* validate_FieldRules_message(const validate_FieldRules *msg) { return UPB_FIELD_AT(msg, const validate_MessageRules*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool validate_FieldRules_has_repeated(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 18); }
+UPB_INLINE const validate_RepeatedRules* validate_FieldRules_repeated(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_RepeatedRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 18, NULL); }
+UPB_INLINE bool validate_FieldRules_has_map(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 19); }
+UPB_INLINE const validate_MapRules* validate_FieldRules_map(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_MapRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 19, NULL); }
+UPB_INLINE bool validate_FieldRules_has_any(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 20); }
+UPB_INLINE const validate_AnyRules* validate_FieldRules_any(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_AnyRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 20, NULL); }
+UPB_INLINE bool validate_FieldRules_has_duration(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 21); }
+UPB_INLINE const validate_DurationRules* validate_FieldRules_duration(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_DurationRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 21, NULL); }
+UPB_INLINE bool validate_FieldRules_has_timestamp(const validate_FieldRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(12, 24), 22); }
+UPB_INLINE const validate_TimestampRules* validate_FieldRules_timestamp(const validate_FieldRules *msg) { return UPB_READ_ONEOF(msg, const validate_TimestampRules*, UPB_SIZE(8, 16), UPB_SIZE(12, 24), 22, NULL); }
+
+UPB_INLINE void validate_FieldRules_set_float(validate_FieldRules *msg, validate_FloatRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_FloatRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 1);
+}
+UPB_INLINE struct validate_FloatRules* validate_FieldRules_mutable_float(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_FloatRules* sub = (struct validate_FloatRules*)validate_FieldRules_float(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FloatRules*)upb_msg_new(&validate_FloatRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_float(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_double(validate_FieldRules *msg, validate_DoubleRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_DoubleRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 2);
+}
+UPB_INLINE struct validate_DoubleRules* validate_FieldRules_mutable_double(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_DoubleRules* sub = (struct validate_DoubleRules*)validate_FieldRules_double(msg);
+  if (sub == NULL) {
+    sub = (struct validate_DoubleRules*)upb_msg_new(&validate_DoubleRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_double(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_int32(validate_FieldRules *msg, validate_Int32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Int32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 3);
+}
+UPB_INLINE struct validate_Int32Rules* validate_FieldRules_mutable_int32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Int32Rules* sub = (struct validate_Int32Rules*)validate_FieldRules_int32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Int32Rules*)upb_msg_new(&validate_Int32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_int32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_int64(validate_FieldRules *msg, validate_Int64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Int64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 4);
+}
+UPB_INLINE struct validate_Int64Rules* validate_FieldRules_mutable_int64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Int64Rules* sub = (struct validate_Int64Rules*)validate_FieldRules_int64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Int64Rules*)upb_msg_new(&validate_Int64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_int64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_uint32(validate_FieldRules *msg, validate_UInt32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_UInt32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 5);
+}
+UPB_INLINE struct validate_UInt32Rules* validate_FieldRules_mutable_uint32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_UInt32Rules* sub = (struct validate_UInt32Rules*)validate_FieldRules_uint32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_UInt32Rules*)upb_msg_new(&validate_UInt32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_uint32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_uint64(validate_FieldRules *msg, validate_UInt64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_UInt64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 6);
+}
+UPB_INLINE struct validate_UInt64Rules* validate_FieldRules_mutable_uint64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_UInt64Rules* sub = (struct validate_UInt64Rules*)validate_FieldRules_uint64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_UInt64Rules*)upb_msg_new(&validate_UInt64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_uint64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sint32(validate_FieldRules *msg, validate_SInt32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SInt32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 7);
+}
+UPB_INLINE struct validate_SInt32Rules* validate_FieldRules_mutable_sint32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SInt32Rules* sub = (struct validate_SInt32Rules*)validate_FieldRules_sint32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SInt32Rules*)upb_msg_new(&validate_SInt32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sint32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sint64(validate_FieldRules *msg, validate_SInt64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SInt64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 8);
+}
+UPB_INLINE struct validate_SInt64Rules* validate_FieldRules_mutable_sint64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SInt64Rules* sub = (struct validate_SInt64Rules*)validate_FieldRules_sint64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SInt64Rules*)upb_msg_new(&validate_SInt64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sint64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_fixed32(validate_FieldRules *msg, validate_Fixed32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Fixed32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 9);
+}
+UPB_INLINE struct validate_Fixed32Rules* validate_FieldRules_mutable_fixed32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Fixed32Rules* sub = (struct validate_Fixed32Rules*)validate_FieldRules_fixed32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Fixed32Rules*)upb_msg_new(&validate_Fixed32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_fixed32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_fixed64(validate_FieldRules *msg, validate_Fixed64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_Fixed64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 10);
+}
+UPB_INLINE struct validate_Fixed64Rules* validate_FieldRules_mutable_fixed64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_Fixed64Rules* sub = (struct validate_Fixed64Rules*)validate_FieldRules_fixed64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_Fixed64Rules*)upb_msg_new(&validate_Fixed64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_fixed64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sfixed32(validate_FieldRules *msg, validate_SFixed32Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SFixed32Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 11);
+}
+UPB_INLINE struct validate_SFixed32Rules* validate_FieldRules_mutable_sfixed32(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SFixed32Rules* sub = (struct validate_SFixed32Rules*)validate_FieldRules_sfixed32(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SFixed32Rules*)upb_msg_new(&validate_SFixed32Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sfixed32(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_sfixed64(validate_FieldRules *msg, validate_SFixed64Rules* value) {
+  UPB_WRITE_ONEOF(msg, validate_SFixed64Rules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 12);
+}
+UPB_INLINE struct validate_SFixed64Rules* validate_FieldRules_mutable_sfixed64(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_SFixed64Rules* sub = (struct validate_SFixed64Rules*)validate_FieldRules_sfixed64(msg);
+  if (sub == NULL) {
+    sub = (struct validate_SFixed64Rules*)upb_msg_new(&validate_SFixed64Rules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_sfixed64(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_bool(validate_FieldRules *msg, validate_BoolRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_BoolRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 13);
+}
+UPB_INLINE struct validate_BoolRules* validate_FieldRules_mutable_bool(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_BoolRules* sub = (struct validate_BoolRules*)validate_FieldRules_bool(msg);
+  if (sub == NULL) {
+    sub = (struct validate_BoolRules*)upb_msg_new(&validate_BoolRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_bool(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_string(validate_FieldRules *msg, validate_StringRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_StringRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 14);
+}
+UPB_INLINE struct validate_StringRules* validate_FieldRules_mutable_string(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_StringRules* sub = (struct validate_StringRules*)validate_FieldRules_string(msg);
+  if (sub == NULL) {
+    sub = (struct validate_StringRules*)upb_msg_new(&validate_StringRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_string(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_bytes(validate_FieldRules *msg, validate_BytesRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_BytesRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 15);
+}
+UPB_INLINE struct validate_BytesRules* validate_FieldRules_mutable_bytes(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_BytesRules* sub = (struct validate_BytesRules*)validate_FieldRules_bytes(msg);
+  if (sub == NULL) {
+    sub = (struct validate_BytesRules*)upb_msg_new(&validate_BytesRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_bytes(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_enum(validate_FieldRules *msg, validate_EnumRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_EnumRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 16);
+}
+UPB_INLINE struct validate_EnumRules* validate_FieldRules_mutable_enum(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_EnumRules* sub = (struct validate_EnumRules*)validate_FieldRules_enum(msg);
+  if (sub == NULL) {
+    sub = (struct validate_EnumRules*)upb_msg_new(&validate_EnumRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_enum(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_message(validate_FieldRules *msg, validate_MessageRules* value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, validate_MessageRules*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct validate_MessageRules* validate_FieldRules_mutable_message(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_MessageRules* sub = (struct validate_MessageRules*)validate_FieldRules_message(msg);
+  if (sub == NULL) {
+    sub = (struct validate_MessageRules*)upb_msg_new(&validate_MessageRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_message(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_repeated(validate_FieldRules *msg, validate_RepeatedRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_RepeatedRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 18);
+}
+UPB_INLINE struct validate_RepeatedRules* validate_FieldRules_mutable_repeated(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_RepeatedRules* sub = (struct validate_RepeatedRules*)validate_FieldRules_repeated(msg);
+  if (sub == NULL) {
+    sub = (struct validate_RepeatedRules*)upb_msg_new(&validate_RepeatedRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_repeated(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_map(validate_FieldRules *msg, validate_MapRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_MapRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 19);
+}
+UPB_INLINE struct validate_MapRules* validate_FieldRules_mutable_map(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_MapRules* sub = (struct validate_MapRules*)validate_FieldRules_map(msg);
+  if (sub == NULL) {
+    sub = (struct validate_MapRules*)upb_msg_new(&validate_MapRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_map(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_any(validate_FieldRules *msg, validate_AnyRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_AnyRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 20);
+}
+UPB_INLINE struct validate_AnyRules* validate_FieldRules_mutable_any(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_AnyRules* sub = (struct validate_AnyRules*)validate_FieldRules_any(msg);
+  if (sub == NULL) {
+    sub = (struct validate_AnyRules*)upb_msg_new(&validate_AnyRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_any(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_duration(validate_FieldRules *msg, validate_DurationRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_DurationRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 21);
+}
+UPB_INLINE struct validate_DurationRules* validate_FieldRules_mutable_duration(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_DurationRules* sub = (struct validate_DurationRules*)validate_FieldRules_duration(msg);
+  if (sub == NULL) {
+    sub = (struct validate_DurationRules*)upb_msg_new(&validate_DurationRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_duration(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_FieldRules_set_timestamp(validate_FieldRules *msg, validate_TimestampRules* value) {
+  UPB_WRITE_ONEOF(msg, validate_TimestampRules*, UPB_SIZE(8, 16), value, UPB_SIZE(12, 24), 22);
+}
+UPB_INLINE struct validate_TimestampRules* validate_FieldRules_mutable_timestamp(validate_FieldRules *msg, upb_arena *arena) {
+  struct validate_TimestampRules* sub = (struct validate_TimestampRules*)validate_FieldRules_timestamp(msg);
+  if (sub == NULL) {
+    sub = (struct validate_TimestampRules*)upb_msg_new(&validate_TimestampRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_FieldRules_set_timestamp(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.FloatRules */
+
+UPB_INLINE validate_FloatRules *validate_FloatRules_new(upb_arena *arena) {
+  return (validate_FloatRules *)upb_msg_new(&validate_FloatRules_msginit, arena);
+}
+UPB_INLINE validate_FloatRules *validate_FloatRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_FloatRules *ret = validate_FloatRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_FloatRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_FloatRules_serialize(const validate_FloatRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_FloatRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_FloatRules_has_const(const validate_FloatRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE float validate_FloatRules_const(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_FloatRules_has_lt(const validate_FloatRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE float validate_FloatRules_lt(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_FloatRules_has_lte(const validate_FloatRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE float validate_FloatRules_lte(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_FloatRules_has_gt(const validate_FloatRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE float validate_FloatRules_gt(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_FloatRules_has_gte(const validate_FloatRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE float validate_FloatRules_gte(const validate_FloatRules *msg) { return UPB_FIELD_AT(msg, float, UPB_SIZE(20, 20)); }
+UPB_INLINE float const* validate_FloatRules_in(const validate_FloatRules *msg, size_t *len) { return (float const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE float const* validate_FloatRules_not_in(const validate_FloatRules *msg, size_t *len) { return (float const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_FloatRules_set_const(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_lt(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_lte(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_gt(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_FloatRules_set_gte(validate_FloatRules *msg, float value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, float, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE float* validate_FloatRules_mutable_in(validate_FloatRules *msg, size_t *len) {
+  return (float*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE float* validate_FloatRules_resize_in(validate_FloatRules *msg, size_t len, upb_arena *arena) {
+  return (float*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_FLOAT, arena);
+}
+UPB_INLINE bool validate_FloatRules_add_in(validate_FloatRules *msg, float val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_FLOAT, &val, arena);
+}
+UPB_INLINE float* validate_FloatRules_mutable_not_in(validate_FloatRules *msg, size_t *len) {
+  return (float*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE float* validate_FloatRules_resize_not_in(validate_FloatRules *msg, size_t len, upb_arena *arena) {
+  return (float*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_FLOAT, arena);
+}
+UPB_INLINE bool validate_FloatRules_add_not_in(validate_FloatRules *msg, float val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_FLOAT, &val, arena);
+}
+
+/* validate.DoubleRules */
+
+UPB_INLINE validate_DoubleRules *validate_DoubleRules_new(upb_arena *arena) {
+  return (validate_DoubleRules *)upb_msg_new(&validate_DoubleRules_msginit, arena);
+}
+UPB_INLINE validate_DoubleRules *validate_DoubleRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_DoubleRules *ret = validate_DoubleRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_DoubleRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_DoubleRules_serialize(const validate_DoubleRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_DoubleRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_DoubleRules_has_const(const validate_DoubleRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE double validate_DoubleRules_const(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_DoubleRules_has_lt(const validate_DoubleRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE double validate_DoubleRules_lt(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_DoubleRules_has_lte(const validate_DoubleRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE double validate_DoubleRules_lte(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_DoubleRules_has_gt(const validate_DoubleRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE double validate_DoubleRules_gt(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_DoubleRules_has_gte(const validate_DoubleRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE double validate_DoubleRules_gte(const validate_DoubleRules *msg) { return UPB_FIELD_AT(msg, double, UPB_SIZE(40, 40)); }
+UPB_INLINE double const* validate_DoubleRules_in(const validate_DoubleRules *msg, size_t *len) { return (double const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE double const* validate_DoubleRules_not_in(const validate_DoubleRules *msg, size_t *len) { return (double const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_DoubleRules_set_const(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_lt(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_lte(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_gt(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_DoubleRules_set_gte(validate_DoubleRules *msg, double value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, double, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE double* validate_DoubleRules_mutable_in(validate_DoubleRules *msg, size_t *len) {
+  return (double*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE double* validate_DoubleRules_resize_in(validate_DoubleRules *msg, size_t len, upb_arena *arena) {
+  return (double*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, arena);
+}
+UPB_INLINE bool validate_DoubleRules_add_in(validate_DoubleRules *msg, double val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, &val, arena);
+}
+UPB_INLINE double* validate_DoubleRules_mutable_not_in(validate_DoubleRules *msg, size_t *len) {
+  return (double*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE double* validate_DoubleRules_resize_not_in(validate_DoubleRules *msg, size_t len, upb_arena *arena) {
+  return (double*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, arena);
+}
+UPB_INLINE bool validate_DoubleRules_add_not_in(validate_DoubleRules *msg, double val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_DOUBLE, &val, arena);
+}
+
+/* validate.Int32Rules */
+
+UPB_INLINE validate_Int32Rules *validate_Int32Rules_new(upb_arena *arena) {
+  return (validate_Int32Rules *)upb_msg_new(&validate_Int32Rules_msginit, arena);
+}
+UPB_INLINE validate_Int32Rules *validate_Int32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Int32Rules *ret = validate_Int32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Int32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Int32Rules_serialize(const validate_Int32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Int32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Int32Rules_has_const(const validate_Int32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_Int32Rules_const(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_Int32Rules_has_lt(const validate_Int32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_Int32Rules_lt(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Int32Rules_has_lte(const validate_Int32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_Int32Rules_lte(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_Int32Rules_has_gt(const validate_Int32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_Int32Rules_gt(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Int32Rules_has_gte(const validate_Int32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_Int32Rules_gte(const validate_Int32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_Int32Rules_in(const validate_Int32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_Int32Rules_not_in(const validate_Int32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_Int32Rules_set_const(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_lt(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_lte(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_gt(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Int32Rules_set_gte(validate_Int32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_Int32Rules_mutable_in(validate_Int32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_Int32Rules_resize_in(validate_Int32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_Int32Rules_add_in(validate_Int32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_Int32Rules_mutable_not_in(validate_Int32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_Int32Rules_resize_not_in(validate_Int32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_Int32Rules_add_not_in(validate_Int32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.Int64Rules */
+
+UPB_INLINE validate_Int64Rules *validate_Int64Rules_new(upb_arena *arena) {
+  return (validate_Int64Rules *)upb_msg_new(&validate_Int64Rules_msginit, arena);
+}
+UPB_INLINE validate_Int64Rules *validate_Int64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Int64Rules *ret = validate_Int64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Int64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Int64Rules_serialize(const validate_Int64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Int64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Int64Rules_has_const(const validate_Int64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_Int64Rules_const(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Int64Rules_has_lt(const validate_Int64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_Int64Rules_lt(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Int64Rules_has_lte(const validate_Int64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_Int64Rules_lte(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_Int64Rules_has_gt(const validate_Int64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_Int64Rules_gt(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_Int64Rules_has_gte(const validate_Int64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_Int64Rules_gte(const validate_Int64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_Int64Rules_in(const validate_Int64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_Int64Rules_not_in(const validate_Int64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_Int64Rules_set_const(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_lt(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_lte(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_gt(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_Int64Rules_set_gte(validate_Int64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_Int64Rules_mutable_in(validate_Int64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_Int64Rules_resize_in(validate_Int64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_Int64Rules_add_in(validate_Int64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_Int64Rules_mutable_not_in(validate_Int64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_Int64Rules_resize_not_in(validate_Int64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_Int64Rules_add_not_in(validate_Int64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.UInt32Rules */
+
+UPB_INLINE validate_UInt32Rules *validate_UInt32Rules_new(upb_arena *arena) {
+  return (validate_UInt32Rules *)upb_msg_new(&validate_UInt32Rules_msginit, arena);
+}
+UPB_INLINE validate_UInt32Rules *validate_UInt32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_UInt32Rules *ret = validate_UInt32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_UInt32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_UInt32Rules_serialize(const validate_UInt32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_UInt32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_UInt32Rules_has_const(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint32_t validate_UInt32Rules_const(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_UInt32Rules_has_lt(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint32_t validate_UInt32Rules_lt(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_UInt32Rules_has_lte(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint32_t validate_UInt32Rules_lte(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_UInt32Rules_has_gt(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint32_t validate_UInt32Rules_gt(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_UInt32Rules_has_gte(const validate_UInt32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint32_t validate_UInt32Rules_gte(const validate_UInt32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE uint32_t const* validate_UInt32Rules_in(const validate_UInt32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE uint32_t const* validate_UInt32Rules_not_in(const validate_UInt32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_UInt32Rules_set_const(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_lt(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_lte(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_gt(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_UInt32Rules_set_gte(validate_UInt32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_mutable_in(validate_UInt32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_resize_in(validate_UInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_UInt32Rules_add_in(validate_UInt32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_mutable_not_in(validate_UInt32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE uint32_t* validate_UInt32Rules_resize_not_in(validate_UInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_UInt32Rules_add_not_in(validate_UInt32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+
+/* validate.UInt64Rules */
+
+UPB_INLINE validate_UInt64Rules *validate_UInt64Rules_new(upb_arena *arena) {
+  return (validate_UInt64Rules *)upb_msg_new(&validate_UInt64Rules_msginit, arena);
+}
+UPB_INLINE validate_UInt64Rules *validate_UInt64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_UInt64Rules *ret = validate_UInt64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_UInt64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_UInt64Rules_serialize(const validate_UInt64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_UInt64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_UInt64Rules_has_const(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_UInt64Rules_const(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_UInt64Rules_has_lt(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_UInt64Rules_lt(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_UInt64Rules_has_lte(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_UInt64Rules_lte(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_UInt64Rules_has_gt(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_UInt64Rules_gt(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_UInt64Rules_has_gte(const validate_UInt64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_UInt64Rules_gte(const validate_UInt64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE uint64_t const* validate_UInt64Rules_in(const validate_UInt64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE uint64_t const* validate_UInt64Rules_not_in(const validate_UInt64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_UInt64Rules_set_const(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_lt(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_lte(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_gt(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_UInt64Rules_set_gte(validate_UInt64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_mutable_in(validate_UInt64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_resize_in(validate_UInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_UInt64Rules_add_in(validate_UInt64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_mutable_not_in(validate_UInt64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE uint64_t* validate_UInt64Rules_resize_not_in(validate_UInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_UInt64Rules_add_not_in(validate_UInt64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+
+/* validate.SInt32Rules */
+
+UPB_INLINE validate_SInt32Rules *validate_SInt32Rules_new(upb_arena *arena) {
+  return (validate_SInt32Rules *)upb_msg_new(&validate_SInt32Rules_msginit, arena);
+}
+UPB_INLINE validate_SInt32Rules *validate_SInt32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SInt32Rules *ret = validate_SInt32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SInt32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SInt32Rules_serialize(const validate_SInt32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SInt32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SInt32Rules_has_const(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_SInt32Rules_const(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_SInt32Rules_has_lt(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_SInt32Rules_lt(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SInt32Rules_has_lte(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_SInt32Rules_lte(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_SInt32Rules_has_gt(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_SInt32Rules_gt(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SInt32Rules_has_gte(const validate_SInt32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_SInt32Rules_gte(const validate_SInt32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_SInt32Rules_in(const validate_SInt32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_SInt32Rules_not_in(const validate_SInt32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_SInt32Rules_set_const(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_lt(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_lte(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_gt(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SInt32Rules_set_gte(validate_SInt32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_SInt32Rules_mutable_in(validate_SInt32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_resize_in(validate_SInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SInt32Rules_add_in(validate_SInt32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_mutable_not_in(validate_SInt32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_SInt32Rules_resize_not_in(validate_SInt32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SInt32Rules_add_not_in(validate_SInt32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.SInt64Rules */
+
+UPB_INLINE validate_SInt64Rules *validate_SInt64Rules_new(upb_arena *arena) {
+  return (validate_SInt64Rules *)upb_msg_new(&validate_SInt64Rules_msginit, arena);
+}
+UPB_INLINE validate_SInt64Rules *validate_SInt64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SInt64Rules *ret = validate_SInt64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SInt64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SInt64Rules_serialize(const validate_SInt64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SInt64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SInt64Rules_has_const(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_SInt64Rules_const(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SInt64Rules_has_lt(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_SInt64Rules_lt(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SInt64Rules_has_lte(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_SInt64Rules_lte(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_SInt64Rules_has_gt(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_SInt64Rules_gt(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_SInt64Rules_has_gte(const validate_SInt64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_SInt64Rules_gte(const validate_SInt64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_SInt64Rules_in(const validate_SInt64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_SInt64Rules_not_in(const validate_SInt64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_SInt64Rules_set_const(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_lt(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_lte(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_gt(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_SInt64Rules_set_gte(validate_SInt64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_SInt64Rules_mutable_in(validate_SInt64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_resize_in(validate_SInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SInt64Rules_add_in(validate_SInt64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_mutable_not_in(validate_SInt64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_SInt64Rules_resize_not_in(validate_SInt64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SInt64Rules_add_not_in(validate_SInt64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.Fixed32Rules */
+
+UPB_INLINE validate_Fixed32Rules *validate_Fixed32Rules_new(upb_arena *arena) {
+  return (validate_Fixed32Rules *)upb_msg_new(&validate_Fixed32Rules_msginit, arena);
+}
+UPB_INLINE validate_Fixed32Rules *validate_Fixed32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Fixed32Rules *ret = validate_Fixed32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Fixed32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Fixed32Rules_serialize(const validate_Fixed32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Fixed32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Fixed32Rules_has_const(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint32_t validate_Fixed32Rules_const(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_Fixed32Rules_has_lt(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint32_t validate_Fixed32Rules_lt(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Fixed32Rules_has_lte(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint32_t validate_Fixed32Rules_lte(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_Fixed32Rules_has_gt(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint32_t validate_Fixed32Rules_gt(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Fixed32Rules_has_gte(const validate_Fixed32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint32_t validate_Fixed32Rules_gte(const validate_Fixed32Rules *msg) { return UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE uint32_t const* validate_Fixed32Rules_in(const validate_Fixed32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE uint32_t const* validate_Fixed32Rules_not_in(const validate_Fixed32Rules *msg, size_t *len) { return (uint32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_Fixed32Rules_set_const(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_lt(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_lte(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_gt(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Fixed32Rules_set_gte(validate_Fixed32Rules *msg, uint32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_mutable_in(validate_Fixed32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_resize_in(validate_Fixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_Fixed32Rules_add_in(validate_Fixed32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_mutable_not_in(validate_Fixed32Rules *msg, size_t *len) {
+  return (uint32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE uint32_t* validate_Fixed32Rules_resize_not_in(validate_Fixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (uint32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_UINT32, arena);
+}
+UPB_INLINE bool validate_Fixed32Rules_add_not_in(validate_Fixed32Rules *msg, uint32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_UINT32, &val, arena);
+}
+
+/* validate.Fixed64Rules */
+
+UPB_INLINE validate_Fixed64Rules *validate_Fixed64Rules_new(upb_arena *arena) {
+  return (validate_Fixed64Rules *)upb_msg_new(&validate_Fixed64Rules_msginit, arena);
+}
+UPB_INLINE validate_Fixed64Rules *validate_Fixed64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_Fixed64Rules *ret = validate_Fixed64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_Fixed64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_Fixed64Rules_serialize(const validate_Fixed64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_Fixed64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_Fixed64Rules_has_const(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_Fixed64Rules_const(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_Fixed64Rules_has_lt(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_Fixed64Rules_lt(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_Fixed64Rules_has_lte(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_Fixed64Rules_lte(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_Fixed64Rules_has_gt(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_Fixed64Rules_gt(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_Fixed64Rules_has_gte(const validate_Fixed64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_Fixed64Rules_gte(const validate_Fixed64Rules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE uint64_t const* validate_Fixed64Rules_in(const validate_Fixed64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE uint64_t const* validate_Fixed64Rules_not_in(const validate_Fixed64Rules *msg, size_t *len) { return (uint64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_Fixed64Rules_set_const(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_lt(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_lte(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_gt(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_Fixed64Rules_set_gte(validate_Fixed64Rules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_mutable_in(validate_Fixed64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_resize_in(validate_Fixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_Fixed64Rules_add_in(validate_Fixed64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_mutable_not_in(validate_Fixed64Rules *msg, size_t *len) {
+  return (uint64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE uint64_t* validate_Fixed64Rules_resize_not_in(validate_Fixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (uint64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_UINT64, arena);
+}
+UPB_INLINE bool validate_Fixed64Rules_add_not_in(validate_Fixed64Rules *msg, uint64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_UINT64, &val, arena);
+}
+
+/* validate.SFixed32Rules */
+
+UPB_INLINE validate_SFixed32Rules *validate_SFixed32Rules_new(upb_arena *arena) {
+  return (validate_SFixed32Rules *)upb_msg_new(&validate_SFixed32Rules_msginit, arena);
+}
+UPB_INLINE validate_SFixed32Rules *validate_SFixed32Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SFixed32Rules *ret = validate_SFixed32Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SFixed32Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SFixed32Rules_serialize(const validate_SFixed32Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SFixed32Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SFixed32Rules_has_const(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_SFixed32Rules_const(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_SFixed32Rules_has_lt(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int32_t validate_SFixed32Rules_lt(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SFixed32Rules_has_lte(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int32_t validate_SFixed32Rules_lte(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)); }
+UPB_INLINE bool validate_SFixed32Rules_has_gt(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int32_t validate_SFixed32Rules_gt(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SFixed32Rules_has_gte(const validate_SFixed32Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int32_t validate_SFixed32Rules_gte(const validate_SFixed32Rules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)); }
+UPB_INLINE int32_t const* validate_SFixed32Rules_in(const validate_SFixed32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(24, 24), len); }
+UPB_INLINE int32_t const* validate_SFixed32Rules_not_in(const validate_SFixed32Rules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(28, 32), len); }
+
+UPB_INLINE void validate_SFixed32Rules_set_const(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_lt(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_lte(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(12, 12)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_gt(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SFixed32Rules_set_gte(validate_SFixed32Rules *msg, int32_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(20, 20)) = value;
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_mutable_in(validate_SFixed32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 24), len);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_resize_in(validate_SFixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(24, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SFixed32Rules_add_in(validate_SFixed32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_mutable_not_in(validate_SFixed32Rules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 32), len);
+}
+UPB_INLINE int32_t* validate_SFixed32Rules_resize_not_in(validate_SFixed32Rules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(28, 32), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_SFixed32Rules_add_not_in(validate_SFixed32Rules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 32), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.SFixed64Rules */
+
+UPB_INLINE validate_SFixed64Rules *validate_SFixed64Rules_new(upb_arena *arena) {
+  return (validate_SFixed64Rules *)upb_msg_new(&validate_SFixed64Rules_msginit, arena);
+}
+UPB_INLINE validate_SFixed64Rules *validate_SFixed64Rules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_SFixed64Rules *ret = validate_SFixed64Rules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_SFixed64Rules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_SFixed64Rules_serialize(const validate_SFixed64Rules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_SFixed64Rules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_SFixed64Rules_has_const(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int64_t validate_SFixed64Rules_const(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_SFixed64Rules_has_lt(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE int64_t validate_SFixed64Rules_lt(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_SFixed64Rules_has_lte(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE int64_t validate_SFixed64Rules_lte(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_SFixed64Rules_has_gt(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE int64_t validate_SFixed64Rules_gt(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_SFixed64Rules_has_gte(const validate_SFixed64Rules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE int64_t validate_SFixed64Rules_gte(const validate_SFixed64Rules *msg) { return UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE int64_t const* validate_SFixed64Rules_in(const validate_SFixed64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(48, 48), len); }
+UPB_INLINE int64_t const* validate_SFixed64Rules_not_in(const validate_SFixed64Rules *msg, size_t *len) { return (int64_t const*)_upb_array_accessor(msg, UPB_SIZE(52, 56), len); }
+
+UPB_INLINE void validate_SFixed64Rules_set_const(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_lt(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_lte(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_gt(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_SFixed64Rules_set_gte(validate_SFixed64Rules *msg, int64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, int64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_mutable_in(validate_SFixed64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(48, 48), len);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_resize_in(validate_SFixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(48, 48), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SFixed64Rules_add_in(validate_SFixed64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(48, 48), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_mutable_not_in(validate_SFixed64Rules *msg, size_t *len) {
+  return (int64_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(52, 56), len);
+}
+UPB_INLINE int64_t* validate_SFixed64Rules_resize_not_in(validate_SFixed64Rules *msg, size_t len, upb_arena *arena) {
+  return (int64_t*)_upb_array_resize_accessor(msg, UPB_SIZE(52, 56), len, UPB_SIZE(8, 8), UPB_TYPE_INT64, arena);
+}
+UPB_INLINE bool validate_SFixed64Rules_add_not_in(validate_SFixed64Rules *msg, int64_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(52, 56), UPB_SIZE(8, 8), UPB_TYPE_INT64, &val, arena);
+}
+
+/* validate.BoolRules */
+
+UPB_INLINE validate_BoolRules *validate_BoolRules_new(upb_arena *arena) {
+  return (validate_BoolRules *)upb_msg_new(&validate_BoolRules_msginit, arena);
+}
+UPB_INLINE validate_BoolRules *validate_BoolRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_BoolRules *ret = validate_BoolRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_BoolRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_BoolRules_serialize(const validate_BoolRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_BoolRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_BoolRules_has_const(const validate_BoolRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_BoolRules_const(const validate_BoolRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+
+UPB_INLINE void validate_BoolRules_set_const(validate_BoolRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+
+/* validate.StringRules */
+
+UPB_INLINE validate_StringRules *validate_StringRules_new(upb_arena *arena) {
+  return (validate_StringRules *)upb_msg_new(&validate_StringRules_msginit, arena);
+}
+UPB_INLINE validate_StringRules *validate_StringRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_StringRules *ret = validate_StringRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_StringRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_StringRules_serialize(const validate_StringRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_StringRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_StringRules_well_known_email = 12,
+  validate_StringRules_well_known_hostname = 13,
+  validate_StringRules_well_known_ip = 14,
+  validate_StringRules_well_known_ipv4 = 15,
+  validate_StringRules_well_known_ipv6 = 16,
+  validate_StringRules_well_known_uri = 17,
+  validate_StringRules_well_known_uri_ref = 18,
+  validate_StringRules_well_known_address = 21,
+  validate_StringRules_well_known_uuid = 22,
+  validate_StringRules_well_known_well_known_regex = 24,
+  validate_StringRules_well_known_NOT_SET = 0
+} validate_StringRules_well_known_oneofcases;
+UPB_INLINE validate_StringRules_well_known_oneofcases validate_StringRules_well_known_case(const validate_StringRules* msg) { return (validate_StringRules_well_known_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(120, 176)); }
+
+UPB_INLINE bool validate_StringRules_has_const(const validate_StringRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview validate_StringRules_const(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 56)); }
+UPB_INLINE bool validate_StringRules_has_min_len(const validate_StringRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_StringRules_min_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_StringRules_has_max_len(const validate_StringRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_StringRules_max_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_StringRules_has_min_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_StringRules_min_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_StringRules_has_max_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE uint64_t validate_StringRules_max_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_StringRules_has_pattern(const validate_StringRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview validate_StringRules_pattern(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 72)); }
+UPB_INLINE bool validate_StringRules_has_prefix(const validate_StringRules *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE upb_strview validate_StringRules_prefix(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(72, 88)); }
+UPB_INLINE bool validate_StringRules_has_suffix(const validate_StringRules *msg) { return _upb_has_field(msg, 10); }
+UPB_INLINE upb_strview validate_StringRules_suffix(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(80, 104)); }
+UPB_INLINE bool validate_StringRules_has_contains(const validate_StringRules *msg) { return _upb_has_field(msg, 11); }
+UPB_INLINE upb_strview validate_StringRules_contains(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(88, 120)); }
+UPB_INLINE upb_strview const* validate_StringRules_in(const validate_StringRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(104, 152), len); }
+UPB_INLINE upb_strview const* validate_StringRules_not_in(const validate_StringRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(108, 160), len); }
+UPB_INLINE bool validate_StringRules_has_email(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 12); }
+UPB_INLINE bool validate_StringRules_email(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 12, false); }
+UPB_INLINE bool validate_StringRules_has_hostname(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 13); }
+UPB_INLINE bool validate_StringRules_hostname(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 13, false); }
+UPB_INLINE bool validate_StringRules_has_ip(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 14); }
+UPB_INLINE bool validate_StringRules_ip(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 14, false); }
+UPB_INLINE bool validate_StringRules_has_ipv4(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 15); }
+UPB_INLINE bool validate_StringRules_ipv4(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 15, false); }
+UPB_INLINE bool validate_StringRules_has_ipv6(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 16); }
+UPB_INLINE bool validate_StringRules_ipv6(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 16, false); }
+UPB_INLINE bool validate_StringRules_has_uri(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 17); }
+UPB_INLINE bool validate_StringRules_uri(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 17, false); }
+UPB_INLINE bool validate_StringRules_has_uri_ref(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 18); }
+UPB_INLINE bool validate_StringRules_uri_ref(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 18, false); }
+UPB_INLINE bool validate_StringRules_has_len(const validate_StringRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE uint64_t validate_StringRules_len(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)); }
+UPB_INLINE bool validate_StringRules_has_len_bytes(const validate_StringRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE uint64_t validate_StringRules_len_bytes(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(48, 48)); }
+UPB_INLINE bool validate_StringRules_has_address(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 21); }
+UPB_INLINE bool validate_StringRules_address(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 21, false); }
+UPB_INLINE bool validate_StringRules_has_uuid(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 22); }
+UPB_INLINE bool validate_StringRules_uuid(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 22, false); }
+UPB_INLINE bool validate_StringRules_has_not_contains(const validate_StringRules *msg) { return _upb_has_field(msg, 12); }
+UPB_INLINE upb_strview validate_StringRules_not_contains(const validate_StringRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(96, 136)); }
+UPB_INLINE bool validate_StringRules_has_well_known_regex(const validate_StringRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(120, 176), 24); }
+UPB_INLINE int32_t validate_StringRules_well_known_regex(const validate_StringRules *msg) { return UPB_READ_ONEOF(msg, int32_t, UPB_SIZE(112, 168), UPB_SIZE(120, 176), 24, validate_UNKNOWN); }
+
+UPB_INLINE void validate_StringRules_set_const(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 56)) = value;
+}
+UPB_INLINE void validate_StringRules_set_min_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_StringRules_set_max_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_StringRules_set_min_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_StringRules_set_max_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_StringRules_set_pattern(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 72)) = value;
+}
+UPB_INLINE void validate_StringRules_set_prefix(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(72, 88)) = value;
+}
+UPB_INLINE void validate_StringRules_set_suffix(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 10);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(80, 104)) = value;
+}
+UPB_INLINE void validate_StringRules_set_contains(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 11);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(88, 120)) = value;
+}
+UPB_INLINE upb_strview* validate_StringRules_mutable_in(validate_StringRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(104, 152), len);
+}
+UPB_INLINE upb_strview* validate_StringRules_resize_in(validate_StringRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(104, 152), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_StringRules_add_in(validate_StringRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(104, 152), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_StringRules_mutable_not_in(validate_StringRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(108, 160), len);
+}
+UPB_INLINE upb_strview* validate_StringRules_resize_not_in(validate_StringRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(108, 160), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_StringRules_add_not_in(validate_StringRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(108, 160), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void validate_StringRules_set_email(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 12);
+}
+UPB_INLINE void validate_StringRules_set_hostname(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 13);
+}
+UPB_INLINE void validate_StringRules_set_ip(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 14);
+}
+UPB_INLINE void validate_StringRules_set_ipv4(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 15);
+}
+UPB_INLINE void validate_StringRules_set_ipv6(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 16);
+}
+UPB_INLINE void validate_StringRules_set_uri(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 17);
+}
+UPB_INLINE void validate_StringRules_set_uri_ref(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 18);
+}
+UPB_INLINE void validate_StringRules_set_len(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(40, 40)) = value;
+}
+UPB_INLINE void validate_StringRules_set_len_bytes(validate_StringRules *msg, uint64_t value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(48, 48)) = value;
+}
+UPB_INLINE void validate_StringRules_set_address(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 21);
+}
+UPB_INLINE void validate_StringRules_set_uuid(validate_StringRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 22);
+}
+UPB_INLINE void validate_StringRules_set_not_contains(validate_StringRules *msg, upb_strview value) {
+  _upb_sethas(msg, 12);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(96, 136)) = value;
+}
+UPB_INLINE void validate_StringRules_set_well_known_regex(validate_StringRules *msg, int32_t value) {
+  UPB_WRITE_ONEOF(msg, int32_t, UPB_SIZE(112, 168), value, UPB_SIZE(120, 176), 24);
+}
+
+/* validate.BytesRules */
+
+UPB_INLINE validate_BytesRules *validate_BytesRules_new(upb_arena *arena) {
+  return (validate_BytesRules *)upb_msg_new(&validate_BytesRules_msginit, arena);
+}
+UPB_INLINE validate_BytesRules *validate_BytesRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_BytesRules *ret = validate_BytesRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_BytesRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_BytesRules_serialize(const validate_BytesRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_BytesRules_msginit, arena, len);
+}
+
+typedef enum {
+  validate_BytesRules_well_known_ip = 10,
+  validate_BytesRules_well_known_ipv4 = 11,
+  validate_BytesRules_well_known_ipv6 = 12,
+  validate_BytesRules_well_known_NOT_SET = 0
+} validate_BytesRules_well_known_oneofcases;
+UPB_INLINE validate_BytesRules_well_known_oneofcases validate_BytesRules_well_known_case(const validate_BytesRules* msg) { return (validate_BytesRules_well_known_oneofcases)UPB_FIELD_AT(msg, int32_t, UPB_SIZE(84, 132)); }
+
+UPB_INLINE bool validate_BytesRules_has_const(const validate_BytesRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE upb_strview validate_BytesRules_const(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)); }
+UPB_INLINE bool validate_BytesRules_has_min_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_BytesRules_min_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_BytesRules_has_max_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_BytesRules_max_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_BytesRules_has_pattern(const validate_BytesRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE upb_strview validate_BytesRules_pattern(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)); }
+UPB_INLINE bool validate_BytesRules_has_prefix(const validate_BytesRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE upb_strview validate_BytesRules_prefix(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)); }
+UPB_INLINE bool validate_BytesRules_has_suffix(const validate_BytesRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE upb_strview validate_BytesRules_suffix(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)); }
+UPB_INLINE bool validate_BytesRules_has_contains(const validate_BytesRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE upb_strview validate_BytesRules_contains(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)); }
+UPB_INLINE upb_strview const* validate_BytesRules_in(const validate_BytesRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(72, 112), len); }
+UPB_INLINE upb_strview const* validate_BytesRules_not_in(const validate_BytesRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(76, 120), len); }
+UPB_INLINE bool validate_BytesRules_has_ip(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 10); }
+UPB_INLINE bool validate_BytesRules_ip(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 10, false); }
+UPB_INLINE bool validate_BytesRules_has_ipv4(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 11); }
+UPB_INLINE bool validate_BytesRules_ipv4(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 11, false); }
+UPB_INLINE bool validate_BytesRules_has_ipv6(const validate_BytesRules *msg) { return _upb_has_oneof_field(msg, UPB_SIZE(84, 132), 12); }
+UPB_INLINE bool validate_BytesRules_ipv6(const validate_BytesRules *msg) { return UPB_READ_ONEOF(msg, bool, UPB_SIZE(80, 128), UPB_SIZE(84, 132), 12, false); }
+UPB_INLINE bool validate_BytesRules_has_len(const validate_BytesRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE uint64_t validate_BytesRules_len(const validate_BytesRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)); }
+
+UPB_INLINE void validate_BytesRules_set_const(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(32, 32)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_min_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_max_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_pattern(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(40, 48)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_prefix(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(48, 64)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_suffix(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(56, 80)) = value;
+}
+UPB_INLINE void validate_BytesRules_set_contains(validate_BytesRules *msg, upb_strview value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, upb_strview, UPB_SIZE(64, 96)) = value;
+}
+UPB_INLINE upb_strview* validate_BytesRules_mutable_in(validate_BytesRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(72, 112), len);
+}
+UPB_INLINE upb_strview* validate_BytesRules_resize_in(validate_BytesRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(72, 112), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_BytesRules_add_in(validate_BytesRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(72, 112), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_BytesRules_mutable_not_in(validate_BytesRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(76, 120), len);
+}
+UPB_INLINE upb_strview* validate_BytesRules_resize_not_in(validate_BytesRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(76, 120), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_BytesRules_add_not_in(validate_BytesRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(76, 120), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE void validate_BytesRules_set_ip(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 10);
+}
+UPB_INLINE void validate_BytesRules_set_ipv4(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 11);
+}
+UPB_INLINE void validate_BytesRules_set_ipv6(validate_BytesRules *msg, bool value) {
+  UPB_WRITE_ONEOF(msg, bool, UPB_SIZE(80, 128), value, UPB_SIZE(84, 132), 12);
+}
+UPB_INLINE void validate_BytesRules_set_len(validate_BytesRules *msg, uint64_t value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(24, 24)) = value;
+}
+
+/* validate.EnumRules */
+
+UPB_INLINE validate_EnumRules *validate_EnumRules_new(upb_arena *arena) {
+  return (validate_EnumRules *)upb_msg_new(&validate_EnumRules_msginit, arena);
+}
+UPB_INLINE validate_EnumRules *validate_EnumRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_EnumRules *ret = validate_EnumRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_EnumRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_EnumRules_serialize(const validate_EnumRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_EnumRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_EnumRules_has_const(const validate_EnumRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE int32_t validate_EnumRules_const(const validate_EnumRules *msg) { return UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_EnumRules_has_defined_only(const validate_EnumRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_EnumRules_defined_only(const validate_EnumRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)); }
+UPB_INLINE int32_t const* validate_EnumRules_in(const validate_EnumRules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(12, 16), len); }
+UPB_INLINE int32_t const* validate_EnumRules_not_in(const validate_EnumRules *msg, size_t *len) { return (int32_t const*)_upb_array_accessor(msg, UPB_SIZE(16, 24), len); }
+
+UPB_INLINE void validate_EnumRules_set_const(validate_EnumRules *msg, int32_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, int32_t, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_EnumRules_set_defined_only(validate_EnumRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE int32_t* validate_EnumRules_mutable_in(validate_EnumRules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(12, 16), len);
+}
+UPB_INLINE int32_t* validate_EnumRules_resize_in(validate_EnumRules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(12, 16), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_EnumRules_add_in(validate_EnumRules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(12, 16), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+UPB_INLINE int32_t* validate_EnumRules_mutable_not_in(validate_EnumRules *msg, size_t *len) {
+  return (int32_t*)_upb_array_mutable_accessor(msg, UPB_SIZE(16, 24), len);
+}
+UPB_INLINE int32_t* validate_EnumRules_resize_not_in(validate_EnumRules *msg, size_t len, upb_arena *arena) {
+  return (int32_t*)_upb_array_resize_accessor(msg, UPB_SIZE(16, 24), len, UPB_SIZE(4, 4), UPB_TYPE_INT32, arena);
+}
+UPB_INLINE bool validate_EnumRules_add_not_in(validate_EnumRules *msg, int32_t val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(16, 24), UPB_SIZE(4, 4), UPB_TYPE_INT32, &val, arena);
+}
+
+/* validate.MessageRules */
+
+UPB_INLINE validate_MessageRules *validate_MessageRules_new(upb_arena *arena) {
+  return (validate_MessageRules *)upb_msg_new(&validate_MessageRules_msginit, arena);
+}
+UPB_INLINE validate_MessageRules *validate_MessageRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_MessageRules *ret = validate_MessageRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_MessageRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_MessageRules_serialize(const validate_MessageRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_MessageRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_MessageRules_has_skip(const validate_MessageRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_MessageRules_skip(const validate_MessageRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool validate_MessageRules_has_required(const validate_MessageRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_MessageRules_required(const validate_MessageRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+
+UPB_INLINE void validate_MessageRules_set_skip(validate_MessageRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void validate_MessageRules_set_required(validate_MessageRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+
+/* validate.RepeatedRules */
+
+UPB_INLINE validate_RepeatedRules *validate_RepeatedRules_new(upb_arena *arena) {
+  return (validate_RepeatedRules *)upb_msg_new(&validate_RepeatedRules_msginit, arena);
+}
+UPB_INLINE validate_RepeatedRules *validate_RepeatedRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_RepeatedRules *ret = validate_RepeatedRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_RepeatedRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_RepeatedRules_serialize(const validate_RepeatedRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_RepeatedRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_RepeatedRules_has_min_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_RepeatedRules_min_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_RepeatedRules_has_max_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_RepeatedRules_max_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_RepeatedRules_has_unique(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_RepeatedRules_unique(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_RepeatedRules_has_items(const validate_RepeatedRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const validate_FieldRules* validate_RepeatedRules_items(const validate_RepeatedRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(28, 32)); }
+
+UPB_INLINE void validate_RepeatedRules_set_min_items(validate_RepeatedRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_max_items(validate_RepeatedRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_unique(validate_RepeatedRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_RepeatedRules_set_items(validate_RepeatedRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_RepeatedRules_mutable_items(validate_RepeatedRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_RepeatedRules_items(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_RepeatedRules_set_items(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.MapRules */
+
+UPB_INLINE validate_MapRules *validate_MapRules_new(upb_arena *arena) {
+  return (validate_MapRules *)upb_msg_new(&validate_MapRules_msginit, arena);
+}
+UPB_INLINE validate_MapRules *validate_MapRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_MapRules *ret = validate_MapRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_MapRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_MapRules_serialize(const validate_MapRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_MapRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_MapRules_has_min_pairs(const validate_MapRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE uint64_t validate_MapRules_min_pairs(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_MapRules_has_max_pairs(const validate_MapRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE uint64_t validate_MapRules_max_pairs(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)); }
+UPB_INLINE bool validate_MapRules_has_no_sparse(const validate_MapRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_MapRules_no_sparse(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)); }
+UPB_INLINE bool validate_MapRules_has_keys(const validate_MapRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const validate_FieldRules* validate_MapRules_keys(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(28, 32)); }
+UPB_INLINE bool validate_MapRules_has_values(const validate_MapRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const validate_FieldRules* validate_MapRules_values(const validate_MapRules *msg) { return UPB_FIELD_AT(msg, const validate_FieldRules*, UPB_SIZE(32, 40)); }
+
+UPB_INLINE void validate_MapRules_set_min_pairs(validate_MapRules *msg, uint64_t value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE void validate_MapRules_set_max_pairs(validate_MapRules *msg, uint64_t value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, uint64_t, UPB_SIZE(16, 16)) = value;
+}
+UPB_INLINE void validate_MapRules_set_no_sparse(validate_MapRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(24, 24)) = value;
+}
+UPB_INLINE void validate_MapRules_set_keys(validate_MapRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(28, 32)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_MapRules_mutable_keys(validate_MapRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_MapRules_keys(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_MapRules_set_keys(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_MapRules_set_values(validate_MapRules *msg, validate_FieldRules* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, validate_FieldRules*, UPB_SIZE(32, 40)) = value;
+}
+UPB_INLINE struct validate_FieldRules* validate_MapRules_mutable_values(validate_MapRules *msg, upb_arena *arena) {
+  struct validate_FieldRules* sub = (struct validate_FieldRules*)validate_MapRules_values(msg);
+  if (sub == NULL) {
+    sub = (struct validate_FieldRules*)upb_msg_new(&validate_FieldRules_msginit, arena);
+    if (!sub) return NULL;
+    validate_MapRules_set_values(msg, sub);
+  }
+  return sub;
+}
+
+/* validate.AnyRules */
+
+UPB_INLINE validate_AnyRules *validate_AnyRules_new(upb_arena *arena) {
+  return (validate_AnyRules *)upb_msg_new(&validate_AnyRules_msginit, arena);
+}
+UPB_INLINE validate_AnyRules *validate_AnyRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_AnyRules *ret = validate_AnyRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_AnyRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_AnyRules_serialize(const validate_AnyRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_AnyRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_AnyRules_has_required(const validate_AnyRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_AnyRules_required(const validate_AnyRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE upb_strview const* validate_AnyRules_in(const validate_AnyRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(4, 8), len); }
+UPB_INLINE upb_strview const* validate_AnyRules_not_in(const validate_AnyRules *msg, size_t *len) { return (upb_strview const*)_upb_array_accessor(msg, UPB_SIZE(8, 16), len); }
+
+UPB_INLINE void validate_AnyRules_set_required(validate_AnyRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE upb_strview* validate_AnyRules_mutable_in(validate_AnyRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(4, 8), len);
+}
+UPB_INLINE upb_strview* validate_AnyRules_resize_in(validate_AnyRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(4, 8), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_AnyRules_add_in(validate_AnyRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(4, 8), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+UPB_INLINE upb_strview* validate_AnyRules_mutable_not_in(validate_AnyRules *msg, size_t *len) {
+  return (upb_strview*)_upb_array_mutable_accessor(msg, UPB_SIZE(8, 16), len);
+}
+UPB_INLINE upb_strview* validate_AnyRules_resize_not_in(validate_AnyRules *msg, size_t len, upb_arena *arena) {
+  return (upb_strview*)_upb_array_resize_accessor(msg, UPB_SIZE(8, 16), len, UPB_SIZE(8, 16), UPB_TYPE_STRING, arena);
+}
+UPB_INLINE bool validate_AnyRules_add_not_in(validate_AnyRules *msg, upb_strview val, upb_arena *arena) {
+  return _upb_array_append_accessor(
+      msg, UPB_SIZE(8, 16), UPB_SIZE(8, 16), UPB_TYPE_STRING, &val, arena);
+}
+
+/* validate.DurationRules */
+
+UPB_INLINE validate_DurationRules *validate_DurationRules_new(upb_arena *arena) {
+  return (validate_DurationRules *)upb_msg_new(&validate_DurationRules_msginit, arena);
+}
+UPB_INLINE validate_DurationRules *validate_DurationRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_DurationRules *ret = validate_DurationRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_DurationRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_DurationRules_serialize(const validate_DurationRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_DurationRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_DurationRules_has_required(const validate_DurationRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_DurationRules_required(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)); }
+UPB_INLINE bool validate_DurationRules_has_const(const validate_DurationRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_const(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(4, 8)); }
+UPB_INLINE bool validate_DurationRules_has_lt(const validate_DurationRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_lt(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(8, 16)); }
+UPB_INLINE bool validate_DurationRules_has_lte(const validate_DurationRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_lte(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(12, 24)); }
+UPB_INLINE bool validate_DurationRules_has_gt(const validate_DurationRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_gt(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(16, 32)); }
+UPB_INLINE bool validate_DurationRules_has_gte(const validate_DurationRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const struct google_protobuf_Duration* validate_DurationRules_gte(const validate_DurationRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(20, 40)); }
+UPB_INLINE const struct google_protobuf_Duration* const* validate_DurationRules_in(const validate_DurationRules *msg, size_t *len) { return (const struct google_protobuf_Duration* const*)_upb_array_accessor(msg, UPB_SIZE(24, 48), len); }
+UPB_INLINE const struct google_protobuf_Duration* const* validate_DurationRules_not_in(const validate_DurationRules *msg, size_t *len) { return (const struct google_protobuf_Duration* const*)_upb_array_accessor(msg, UPB_SIZE(28, 56), len); }
+
+UPB_INLINE void validate_DurationRules_set_required(validate_DurationRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(1, 1)) = value;
+}
+UPB_INLINE void validate_DurationRules_set_const(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(4, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_const(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_const(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_const(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_lt(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(8, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_lt(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_lt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_lt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_lte(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(12, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_lte(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_lte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_lte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_gt(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(16, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_gt(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_gt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_gt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_DurationRules_set_gte(validate_DurationRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(20, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_mutable_gte(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_DurationRules_gte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_DurationRules_set_gte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_mutable_in(validate_DurationRules *msg, size_t *len) {
+  return (struct google_protobuf_Duration**)_upb_array_mutable_accessor(msg, UPB_SIZE(24, 48), len);
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_resize_in(validate_DurationRules *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Duration**)_upb_array_resize_accessor(msg, UPB_SIZE(24, 48), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_add_in(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(24, 48), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_mutable_not_in(validate_DurationRules *msg, size_t *len) {
+  return (struct google_protobuf_Duration**)_upb_array_mutable_accessor(msg, UPB_SIZE(28, 56), len);
+}
+UPB_INLINE struct google_protobuf_Duration** validate_DurationRules_resize_not_in(validate_DurationRules *msg, size_t len, upb_arena *arena) {
+  return (struct google_protobuf_Duration**)_upb_array_resize_accessor(msg, UPB_SIZE(28, 56), len, UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, arena);
+}
+UPB_INLINE struct google_protobuf_Duration* validate_DurationRules_add_not_in(validate_DurationRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+  bool ok = _upb_array_append_accessor(
+      msg, UPB_SIZE(28, 56), UPB_SIZE(4, 8), UPB_TYPE_MESSAGE, &sub, arena);
+  if (!ok) return NULL;
+  return sub;
+}
+
+/* validate.TimestampRules */
+
+UPB_INLINE validate_TimestampRules *validate_TimestampRules_new(upb_arena *arena) {
+  return (validate_TimestampRules *)upb_msg_new(&validate_TimestampRules_msginit, arena);
+}
+UPB_INLINE validate_TimestampRules *validate_TimestampRules_parse(const char *buf, size_t size,
+                        upb_arena *arena) {
+  validate_TimestampRules *ret = validate_TimestampRules_new(arena);
+  return (ret && upb_decode(buf, size, ret, &validate_TimestampRules_msginit, arena)) ? ret : NULL;
+}
+UPB_INLINE char *validate_TimestampRules_serialize(const validate_TimestampRules *msg, upb_arena *arena, size_t *len) {
+  return upb_encode(msg, &validate_TimestampRules_msginit, arena, len);
+}
+
+UPB_INLINE bool validate_TimestampRules_has_required(const validate_TimestampRules *msg) { return _upb_has_field(msg, 1); }
+UPB_INLINE bool validate_TimestampRules_required(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)); }
+UPB_INLINE bool validate_TimestampRules_has_const(const validate_TimestampRules *msg) { return _upb_has_field(msg, 4); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_const(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(8, 8)); }
+UPB_INLINE bool validate_TimestampRules_has_lt(const validate_TimestampRules *msg) { return _upb_has_field(msg, 5); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_lt(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(12, 16)); }
+UPB_INLINE bool validate_TimestampRules_has_lte(const validate_TimestampRules *msg) { return _upb_has_field(msg, 6); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_lte(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(16, 24)); }
+UPB_INLINE bool validate_TimestampRules_has_gt(const validate_TimestampRules *msg) { return _upb_has_field(msg, 7); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_gt(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(20, 32)); }
+UPB_INLINE bool validate_TimestampRules_has_gte(const validate_TimestampRules *msg) { return _upb_has_field(msg, 8); }
+UPB_INLINE const struct google_protobuf_Timestamp* validate_TimestampRules_gte(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Timestamp*, UPB_SIZE(24, 40)); }
+UPB_INLINE bool validate_TimestampRules_has_lt_now(const validate_TimestampRules *msg) { return _upb_has_field(msg, 2); }
+UPB_INLINE bool validate_TimestampRules_lt_now(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)); }
+UPB_INLINE bool validate_TimestampRules_has_gt_now(const validate_TimestampRules *msg) { return _upb_has_field(msg, 3); }
+UPB_INLINE bool validate_TimestampRules_gt_now(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)); }
+UPB_INLINE bool validate_TimestampRules_has_within(const validate_TimestampRules *msg) { return _upb_has_field(msg, 9); }
+UPB_INLINE const struct google_protobuf_Duration* validate_TimestampRules_within(const validate_TimestampRules *msg) { return UPB_FIELD_AT(msg, const struct google_protobuf_Duration*, UPB_SIZE(28, 48)); }
+
+UPB_INLINE void validate_TimestampRules_set_required(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 1);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(2, 2)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_const(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 4);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(8, 8)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_const(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_const(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_const(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lt(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 5);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(12, 16)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_lt(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_lt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_lt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lte(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 6);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(16, 24)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_lte(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_lte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_lte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_gt(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 7);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(20, 32)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_gt(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_gt(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_gt(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_gte(validate_TimestampRules *msg, struct google_protobuf_Timestamp* value) {
+  _upb_sethas(msg, 8);
+  UPB_FIELD_AT(msg, struct google_protobuf_Timestamp*, UPB_SIZE(24, 40)) = value;
+}
+UPB_INLINE struct google_protobuf_Timestamp* validate_TimestampRules_mutable_gte(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Timestamp* sub = (struct google_protobuf_Timestamp*)validate_TimestampRules_gte(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Timestamp*)upb_msg_new(&google_protobuf_Timestamp_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_gte(msg, sub);
+  }
+  return sub;
+}
+UPB_INLINE void validate_TimestampRules_set_lt_now(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 2);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(3, 3)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_gt_now(validate_TimestampRules *msg, bool value) {
+  _upb_sethas(msg, 3);
+  UPB_FIELD_AT(msg, bool, UPB_SIZE(4, 4)) = value;
+}
+UPB_INLINE void validate_TimestampRules_set_within(validate_TimestampRules *msg, struct google_protobuf_Duration* value) {
+  _upb_sethas(msg, 9);
+  UPB_FIELD_AT(msg, struct google_protobuf_Duration*, UPB_SIZE(28, 48)) = value;
+}
+UPB_INLINE struct google_protobuf_Duration* validate_TimestampRules_mutable_within(validate_TimestampRules *msg, upb_arena *arena) {
+  struct google_protobuf_Duration* sub = (struct google_protobuf_Duration*)validate_TimestampRules_within(msg);
+  if (sub == NULL) {
+    sub = (struct google_protobuf_Duration*)upb_msg_new(&google_protobuf_Duration_msginit, arena);
+    if (!sub) return NULL;
+    validate_TimestampRules_set_within(msg, sub);
+  }
+  return sub;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* VALIDATE_VALIDATE_PROTO_UPB_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.cc
new file mode 100644
index 0000000..e04fe35
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.cc	
@@ -0,0 +1,306 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/avl/avl.h"
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+grpc_avl grpc_avl_create(const grpc_avl_vtable* vtable) {
+  grpc_avl out;
+  out.vtable = vtable;
+  out.root = nullptr;
+  return out;
+}
+
+static grpc_avl_node* ref_node(grpc_avl_node* node) {
+  if (node) {
+    gpr_ref(&node->refs);
+  }
+  return node;
+}
+
+static void unref_node(const grpc_avl_vtable* vtable, grpc_avl_node* node,
+                       void* user_data) {
+  if (node == nullptr) {
+    return;
+  }
+  if (gpr_unref(&node->refs)) {
+    vtable->destroy_key(node->key, user_data);
+    vtable->destroy_value(node->value, user_data);
+    unref_node(vtable, node->left, user_data);
+    unref_node(vtable, node->right, user_data);
+    gpr_free(node);
+  }
+}
+
+static long node_height(grpc_avl_node* node) {
+  return node == nullptr ? 0 : node->height;
+}
+
+#ifndef NDEBUG
+static long calculate_height(grpc_avl_node* node) {
+  return node == nullptr ? 0
+                         : 1 + GPR_MAX(calculate_height(node->left),
+                                       calculate_height(node->right));
+}
+
+static grpc_avl_node* assert_invariants(grpc_avl_node* n) {
+  if (n == nullptr) return nullptr;
+  assert_invariants(n->left);
+  assert_invariants(n->right);
+  assert(calculate_height(n) == n->height);
+  assert(labs(node_height(n->left) - node_height(n->right)) <= 1);
+  return n;
+}
+#else
+static grpc_avl_node* assert_invariants(grpc_avl_node* n) { return n; }
+#endif
+
+grpc_avl_node* new_node(void* key, void* value, grpc_avl_node* left,
+                        grpc_avl_node* right) {
+  grpc_avl_node* node = static_cast<grpc_avl_node*>(gpr_malloc(sizeof(*node)));
+  gpr_ref_init(&node->refs, 1);
+  node->key = key;
+  node->value = value;
+  node->left = assert_invariants(left);
+  node->right = assert_invariants(right);
+  node->height = 1 + GPR_MAX(node_height(left), node_height(right));
+  return node;
+}
+
+static grpc_avl_node* get(const grpc_avl_vtable* vtable, grpc_avl_node* node,
+                          void* key, void* user_data) {
+  long cmp;
+
+  if (node == nullptr) {
+    return nullptr;
+  }
+
+  cmp = vtable->compare_keys(node->key, key, user_data);
+  if (cmp == 0) {
+    return node;
+  } else if (cmp > 0) {
+    return get(vtable, node->left, key, user_data);
+  } else {
+    return get(vtable, node->right, key, user_data);
+  }
+}
+
+void* grpc_avl_get(grpc_avl avl, void* key, void* user_data) {
+  grpc_avl_node* node = get(avl.vtable, avl.root, key, user_data);
+  return node ? node->value : nullptr;
+}
+
+int grpc_avl_maybe_get(grpc_avl avl, void* key, void** value, void* user_data) {
+  grpc_avl_node* node = get(avl.vtable, avl.root, key, user_data);
+  if (node != nullptr) {
+    *value = node->value;
+    return 1;
+  }
+  return 0;
+}
+
+static grpc_avl_node* rotate_left(const grpc_avl_vtable* vtable, void* key,
+                                  void* value, grpc_avl_node* left,
+                                  grpc_avl_node* right, void* user_data) {
+  grpc_avl_node* n = new_node(vtable->copy_key(right->key, user_data),
+                              vtable->copy_value(right->value, user_data),
+                              new_node(key, value, left, ref_node(right->left)),
+                              ref_node(right->right));
+  unref_node(vtable, right, user_data);
+  return n;
+}
+
+static grpc_avl_node* rotate_right(const grpc_avl_vtable* vtable, void* key,
+                                   void* value, grpc_avl_node* left,
+                                   grpc_avl_node* right, void* user_data) {
+  grpc_avl_node* n =
+      new_node(vtable->copy_key(left->key, user_data),
+               vtable->copy_value(left->value, user_data), ref_node(left->left),
+               new_node(key, value, ref_node(left->right), right));
+  unref_node(vtable, left, user_data);
+  return n;
+}
+
+static grpc_avl_node* rotate_left_right(const grpc_avl_vtable* vtable,
+                                        void* key, void* value,
+                                        grpc_avl_node* left,
+                                        grpc_avl_node* right, void* user_data) {
+  /* rotate_right(..., rotate_left(left), right) */
+  grpc_avl_node* n =
+      new_node(vtable->copy_key(left->right->key, user_data),
+               vtable->copy_value(left->right->value, user_data),
+               new_node(vtable->copy_key(left->key, user_data),
+                        vtable->copy_value(left->value, user_data),
+                        ref_node(left->left), ref_node(left->right->left)),
+               new_node(key, value, ref_node(left->right->right), right));
+  unref_node(vtable, left, user_data);
+  return n;
+}
+
+static grpc_avl_node* rotate_right_left(const grpc_avl_vtable* vtable,
+                                        void* key, void* value,
+                                        grpc_avl_node* left,
+                                        grpc_avl_node* right, void* user_data) {
+  /* rotate_left(..., left, rotate_right(right)) */
+  grpc_avl_node* n =
+      new_node(vtable->copy_key(right->left->key, user_data),
+               vtable->copy_value(right->left->value, user_data),
+               new_node(key, value, left, ref_node(right->left->left)),
+               new_node(vtable->copy_key(right->key, user_data),
+                        vtable->copy_value(right->value, user_data),
+                        ref_node(right->left->right), ref_node(right->right)));
+  unref_node(vtable, right, user_data);
+  return n;
+}
+
+static grpc_avl_node* rebalance(const grpc_avl_vtable* vtable, void* key,
+                                void* value, grpc_avl_node* left,
+                                grpc_avl_node* right, void* user_data) {
+  switch (node_height(left) - node_height(right)) {
+    case 2:
+      if (node_height(left->left) - node_height(left->right) == -1) {
+        return assert_invariants(
+            rotate_left_right(vtable, key, value, left, right, user_data));
+      } else {
+        return assert_invariants(
+            rotate_right(vtable, key, value, left, right, user_data));
+      }
+    case -2:
+      if (node_height(right->left) - node_height(right->right) == 1) {
+        return assert_invariants(
+            rotate_right_left(vtable, key, value, left, right, user_data));
+      } else {
+        return assert_invariants(
+            rotate_left(vtable, key, value, left, right, user_data));
+      }
+    default:
+      return assert_invariants(new_node(key, value, left, right));
+  }
+}
+
+static grpc_avl_node* add_key(const grpc_avl_vtable* vtable,
+                              grpc_avl_node* node, void* key, void* value,
+                              void* user_data) {
+  long cmp;
+  if (node == nullptr) {
+    return new_node(key, value, nullptr, nullptr);
+  }
+  cmp = vtable->compare_keys(node->key, key, user_data);
+  if (cmp == 0) {
+    return new_node(key, value, ref_node(node->left), ref_node(node->right));
+  } else if (cmp > 0) {
+    return rebalance(vtable, vtable->copy_key(node->key, user_data),
+                     vtable->copy_value(node->value, user_data),
+                     add_key(vtable, node->left, key, value, user_data),
+                     ref_node(node->right), user_data);
+  } else {
+    return rebalance(
+        vtable, vtable->copy_key(node->key, user_data),
+        vtable->copy_value(node->value, user_data), ref_node(node->left),
+        add_key(vtable, node->right, key, value, user_data), user_data);
+  }
+}
+
+grpc_avl grpc_avl_add(grpc_avl avl, void* key, void* value, void* user_data) {
+  grpc_avl_node* old_root = avl.root;
+  avl.root = add_key(avl.vtable, avl.root, key, value, user_data);
+  assert_invariants(avl.root);
+  unref_node(avl.vtable, old_root, user_data);
+  return avl;
+}
+
+static grpc_avl_node* in_order_head(grpc_avl_node* node) {
+  while (node->left != nullptr) {
+    node = node->left;
+  }
+  return node;
+}
+
+static grpc_avl_node* in_order_tail(grpc_avl_node* node) {
+  while (node->right != nullptr) {
+    node = node->right;
+  }
+  return node;
+}
+
+static grpc_avl_node* remove_key(const grpc_avl_vtable* vtable,
+                                 grpc_avl_node* node, void* key,
+                                 void* user_data) {
+  long cmp;
+  if (node == nullptr) {
+    return nullptr;
+  }
+  cmp = vtable->compare_keys(node->key, key, user_data);
+  if (cmp == 0) {
+    if (node->left == nullptr) {
+      return ref_node(node->right);
+    } else if (node->right == nullptr) {
+      return ref_node(node->left);
+    } else if (node->left->height < node->right->height) {
+      grpc_avl_node* h = in_order_head(node->right);
+      return rebalance(
+          vtable, vtable->copy_key(h->key, user_data),
+          vtable->copy_value(h->value, user_data), ref_node(node->left),
+          remove_key(vtable, node->right, h->key, user_data), user_data);
+    } else {
+      grpc_avl_node* h = in_order_tail(node->left);
+      return rebalance(vtable, vtable->copy_key(h->key, user_data),
+                       vtable->copy_value(h->value, user_data),
+                       remove_key(vtable, node->left, h->key, user_data),
+                       ref_node(node->right), user_data);
+    }
+  } else if (cmp > 0) {
+    return rebalance(vtable, vtable->copy_key(node->key, user_data),
+                     vtable->copy_value(node->value, user_data),
+                     remove_key(vtable, node->left, key, user_data),
+                     ref_node(node->right), user_data);
+  } else {
+    return rebalance(
+        vtable, vtable->copy_key(node->key, user_data),
+        vtable->copy_value(node->value, user_data), ref_node(node->left),
+        remove_key(vtable, node->right, key, user_data), user_data);
+  }
+}
+
+grpc_avl grpc_avl_remove(grpc_avl avl, void* key, void* user_data) {
+  grpc_avl_node* old_root = avl.root;
+  avl.root = remove_key(avl.vtable, avl.root, key, user_data);
+  assert_invariants(avl.root);
+  unref_node(avl.vtable, old_root, user_data);
+  return avl;
+}
+
+grpc_avl grpc_avl_ref(grpc_avl avl, void* /*user_data*/) {
+  ref_node(avl.root);
+  return avl;
+}
+
+void grpc_avl_unref(grpc_avl avl, void* user_data) {
+  unref_node(avl.vtable, avl.root, user_data);
+}
+
+int grpc_avl_is_empty(grpc_avl avl) { return avl.root == nullptr; }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.h
new file mode 100644
index 0000000..15a9d56
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/avl/avl.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_AVL_AVL_H
+#define GRPC_CORE_LIB_AVL_AVL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+/** internal node of an AVL tree */
+typedef struct grpc_avl_node {
+  gpr_refcount refs;
+  void* key;
+  void* value;
+  struct grpc_avl_node* left;
+  struct grpc_avl_node* right;
+  long height;
+} grpc_avl_node;
+
+/** vtable for the AVL tree
+ * The optional user_data is propagated from the top level grpc_avl_XXX API.
+ * From the same API call, multiple vtable functions may be called multiple
+ * times.
+ */
+typedef struct grpc_avl_vtable {
+  /** destroy a key */
+  void (*destroy_key)(void* key, void* user_data);
+  /** copy a key, returning new value */
+  void* (*copy_key)(void* key, void* user_data);
+  /** compare key1, key2; return <0 if key1 < key2,
+      >0 if key1 > key2, 0 if key1 == key2 */
+  long (*compare_keys)(void* key1, void* key2, void* user_data);
+  /** destroy a value */
+  void (*destroy_value)(void* value, void* user_data);
+  /** copy a value */
+  void* (*copy_value)(void* value, void* user_data);
+} grpc_avl_vtable;
+
+/** "pointer" to an AVL tree - this is a reference
+    counted object - use grpc_avl_ref to add a reference,
+    grpc_avl_unref when done with a reference */
+typedef struct grpc_avl {
+  const grpc_avl_vtable* vtable;
+  grpc_avl_node* root;
+} grpc_avl;
+
+/** Create an immutable AVL tree. */
+grpc_avl grpc_avl_create(const grpc_avl_vtable* vtable);
+/** Add a reference to an existing tree - returns
+    the tree as a convenience. The optional user_data will be passed to vtable
+    functions. */
+grpc_avl grpc_avl_ref(grpc_avl avl, void* user_data);
+/** Remove a reference to a tree - destroying it if there
+    are no references left. The optional user_data will be passed to vtable
+    functions. */
+void grpc_avl_unref(grpc_avl avl, void* user_data);
+/** Return a new tree with (key, value) added to avl.
+    implicitly unrefs avl to allow easy chaining.
+    if key exists in avl, the new tree's key entry updated
+    (i.e. a duplicate is not created). The optional user_data will be passed to
+    vtable functions. */
+grpc_avl grpc_avl_add(grpc_avl avl, void* key, void* value, void* user_data);
+/** Return a new tree with key deleted
+    implicitly unrefs avl to allow easy chaining. The optional user_data will be
+    passed to vtable functions. */
+grpc_avl grpc_avl_remove(grpc_avl avl, void* key, void* user_data);
+/** Lookup key, and return the associated value.
+    Does not mutate avl.
+    Returns NULL if key is not found. The optional user_data will be passed to
+    vtable functions.*/
+void* grpc_avl_get(grpc_avl avl, void* key, void* user_data);
+/** Return 1 if avl contains key, 0 otherwise; if it has the key, sets *value to
+    its value. The optional user_data will be passed to vtable functions. */
+int grpc_avl_maybe_get(grpc_avl avl, void* key, void** value, void* user_data);
+/** Return 1 if avl is empty, 0 otherwise */
+int grpc_avl_is_empty(grpc_avl avl);
+
+#endif /* GRPC_CORE_LIB_AVL_AVL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.cc
new file mode 100644
index 0000000..e536abd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.cc	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/backoff/backoff.h"
+
+#include <algorithm>
+
+#include "src/core/lib/gpr/useful.h"
+
+namespace grpc_core {
+
+namespace {
+
+/* Generate a random number between 0 and 1. We roll our own RNG because seeding
+ * rand() modifies a global variable we have no control over. */
+double generate_uniform_random_number(uint32_t* rng_state) {
+  constexpr uint32_t two_raise_31 = uint32_t(1) << 31;
+  *rng_state = (1103515245 * *rng_state + 12345) % two_raise_31;
+  return *rng_state / static_cast<double>(two_raise_31);
+}
+
+double generate_uniform_random_number_between(uint32_t* rng_state, double a,
+                                              double b) {
+  if (a == b) return a;
+  if (a > b) GPR_SWAP(double, a, b);  // make sure a < b
+  const double range = b - a;
+  return a + generate_uniform_random_number(rng_state) * range;
+}
+
+}  // namespace
+
+BackOff::BackOff(const Options& options)
+    : options_(options),
+      rng_state_(static_cast<uint32_t>(gpr_now(GPR_CLOCK_REALTIME).tv_nsec)) {
+  Reset();
+}
+
+grpc_millis BackOff::NextAttemptTime() {
+  if (initial_) {
+    initial_ = false;
+    return current_backoff_ + grpc_core::ExecCtx::Get()->Now();
+  }
+  current_backoff_ = static_cast<grpc_millis>(
+      std::min(current_backoff_ * options_.multiplier(),
+               static_cast<double>(options_.max_backoff())));
+  const double jitter = generate_uniform_random_number_between(
+      &rng_state_, -options_.jitter() * current_backoff_,
+      options_.jitter() * current_backoff_);
+  const grpc_millis next_timeout =
+      static_cast<grpc_millis>(current_backoff_ + jitter);
+  return next_timeout + grpc_core::ExecCtx::Get()->Now();
+}
+
+void BackOff::Reset() {
+  current_backoff_ = options_.initial_backoff();
+  initial_ = true;
+}
+
+void BackOff::SetRandomSeed(uint32_t seed) { rng_state_ = seed; }
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.h
new file mode 100644
index 0000000..e769d15
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/backoff/backoff.h	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_BACKOFF_BACKOFF_H
+#define GRPC_CORE_LIB_BACKOFF_BACKOFF_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+/// Implementation of the backoff mechanism described in
+/// doc/connection-backoff.md
+class BackOff {
+ public:
+  class Options;
+
+  /// Initialize backoff machinery - does not need to be destroyed
+  explicit BackOff(const Options& options);
+
+  /// Returns the time at which the next attempt should start.
+  grpc_millis NextAttemptTime();
+
+  /// Reset the backoff, so the next value returned by NextAttemptTime()
+  /// will be the time of the second attempt (rather than the Nth).
+  void Reset();
+
+  void SetRandomSeed(unsigned int seed);
+
+  class Options {
+   public:
+    Options& set_initial_backoff(grpc_millis initial_backoff) {
+      initial_backoff_ = initial_backoff;
+      return *this;
+    }
+    Options& set_multiplier(double multiplier) {
+      multiplier_ = multiplier;
+      return *this;
+    }
+    Options& set_jitter(double jitter) {
+      jitter_ = jitter;
+      return *this;
+    }
+    Options& set_max_backoff(grpc_millis max_backoff) {
+      max_backoff_ = max_backoff;
+      return *this;
+    }
+    /// how long to wait after the first failure before retrying
+    grpc_millis initial_backoff() const { return initial_backoff_; }
+    /// factor with which to multiply backoff after a failed retry
+    double multiplier() const { return multiplier_; }
+    /// amount to randomize backoffs
+    double jitter() const { return jitter_; }
+    /// maximum time between retries
+    grpc_millis max_backoff() const { return max_backoff_; }
+
+   private:
+    grpc_millis initial_backoff_;
+    double multiplier_;
+    double jitter_;
+    grpc_millis max_backoff_;
+  };  // class Options
+
+ private:
+  const Options options_;
+  uint32_t rng_state_;
+  bool initial_;
+  /// current delay before retries
+  grpc_millis current_backoff_;
+};
+
+}  // namespace grpc_core
+#endif /* GRPC_CORE_LIB_BACKOFF_BACKOFF_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.cc
new file mode 100644
index 0000000..10b185f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.cc	
@@ -0,0 +1,379 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/impl/codegen/log.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+
+static grpc_arg copy_arg(const grpc_arg* src) {
+  grpc_arg dst;
+  dst.type = src->type;
+  dst.key = gpr_strdup(src->key);
+  switch (dst.type) {
+    case GRPC_ARG_STRING:
+      dst.value.string = gpr_strdup(src->value.string);
+      break;
+    case GRPC_ARG_INTEGER:
+      dst.value.integer = src->value.integer;
+      break;
+    case GRPC_ARG_POINTER:
+      dst.value.pointer = src->value.pointer;
+      dst.value.pointer.p =
+          src->value.pointer.vtable->copy(src->value.pointer.p);
+      break;
+  }
+  return dst;
+}
+
+grpc_channel_args* grpc_channel_args_copy_and_add(const grpc_channel_args* src,
+                                                  const grpc_arg* to_add,
+                                                  size_t num_to_add) {
+  return grpc_channel_args_copy_and_add_and_remove(src, nullptr, 0, to_add,
+                                                   num_to_add);
+}
+
+grpc_channel_args* grpc_channel_args_copy_and_remove(
+    const grpc_channel_args* src, const char** to_remove,
+    size_t num_to_remove) {
+  return grpc_channel_args_copy_and_add_and_remove(src, to_remove,
+                                                   num_to_remove, nullptr, 0);
+}
+
+static bool should_remove_arg(const grpc_arg* arg, const char** to_remove,
+                              size_t num_to_remove) {
+  for (size_t i = 0; i < num_to_remove; ++i) {
+    if (strcmp(arg->key, to_remove[i]) == 0) return true;
+  }
+  return false;
+}
+
+grpc_channel_args* grpc_channel_args_copy_and_add_and_remove(
+    const grpc_channel_args* src, const char** to_remove, size_t num_to_remove,
+    const grpc_arg* to_add, size_t num_to_add) {
+  // Figure out how many args we'll be copying.
+  size_t num_args_to_copy = 0;
+  if (src != nullptr) {
+    for (size_t i = 0; i < src->num_args; ++i) {
+      if (!should_remove_arg(&src->args[i], to_remove, num_to_remove)) {
+        ++num_args_to_copy;
+      }
+    }
+  }
+  // Create result.
+  grpc_channel_args* dst =
+      static_cast<grpc_channel_args*>(gpr_malloc(sizeof(grpc_channel_args)));
+  dst->num_args = num_args_to_copy + num_to_add;
+  if (dst->num_args == 0) {
+    dst->args = nullptr;
+    return dst;
+  }
+  dst->args =
+      static_cast<grpc_arg*>(gpr_malloc(sizeof(grpc_arg) * dst->num_args));
+  // Copy args from src that are not being removed.
+  size_t dst_idx = 0;
+  if (src != nullptr) {
+    for (size_t i = 0; i < src->num_args; ++i) {
+      if (!should_remove_arg(&src->args[i], to_remove, num_to_remove)) {
+        dst->args[dst_idx++] = copy_arg(&src->args[i]);
+      }
+    }
+  }
+  // Add args from to_add.
+  for (size_t i = 0; i < num_to_add; ++i) {
+    dst->args[dst_idx++] = copy_arg(&to_add[i]);
+  }
+  GPR_ASSERT(dst_idx == dst->num_args);
+  return dst;
+}
+
+grpc_channel_args* grpc_channel_args_copy(const grpc_channel_args* src) {
+  return grpc_channel_args_copy_and_add(src, nullptr, 0);
+}
+
+grpc_channel_args* grpc_channel_args_union(const grpc_channel_args* a,
+                                           const grpc_channel_args* b) {
+  if (a == nullptr) return grpc_channel_args_copy(b);
+  if (b == nullptr) return grpc_channel_args_copy(a);
+  const size_t max_out = (a->num_args + b->num_args);
+  grpc_arg* uniques =
+      static_cast<grpc_arg*>(gpr_malloc(sizeof(*uniques) * max_out));
+  for (size_t i = 0; i < a->num_args; ++i) uniques[i] = a->args[i];
+
+  size_t uniques_idx = a->num_args;
+  for (size_t i = 0; i < b->num_args; ++i) {
+    const char* b_key = b->args[i].key;
+    if (grpc_channel_args_find(a, b_key) == nullptr) {  // not found
+      uniques[uniques_idx++] = b->args[i];
+    }
+  }
+  grpc_channel_args* result =
+      grpc_channel_args_copy_and_add(nullptr, uniques, uniques_idx);
+  gpr_free(uniques);
+  return result;
+}
+
+static int cmp_arg(const grpc_arg* a, const grpc_arg* b) {
+  int c = GPR_ICMP(a->type, b->type);
+  if (c != 0) return c;
+  c = strcmp(a->key, b->key);
+  if (c != 0) return c;
+  switch (a->type) {
+    case GRPC_ARG_STRING:
+      return strcmp(a->value.string, b->value.string);
+    case GRPC_ARG_INTEGER:
+      return GPR_ICMP(a->value.integer, b->value.integer);
+    case GRPC_ARG_POINTER:
+      c = GPR_ICMP(a->value.pointer.p, b->value.pointer.p);
+      if (c != 0) {
+        c = GPR_ICMP(a->value.pointer.vtable, b->value.pointer.vtable);
+        if (c == 0) {
+          c = a->value.pointer.vtable->cmp(a->value.pointer.p,
+                                           b->value.pointer.p);
+        }
+      }
+      return c;
+  }
+  GPR_UNREACHABLE_CODE(return 0);
+}
+
+/* stabilizing comparison function: since channel_args ordering matters for
+ * keys with the same name, we need to preserve that ordering */
+static int cmp_key_stable(const void* ap, const void* bp) {
+  const grpc_arg* const* a = static_cast<const grpc_arg* const*>(ap);
+  const grpc_arg* const* b = static_cast<const grpc_arg* const*>(bp);
+  int c = strcmp((*a)->key, (*b)->key);
+  if (c == 0) c = GPR_ICMP(*a, *b);
+  return c;
+}
+
+grpc_channel_args* grpc_channel_args_normalize(const grpc_channel_args* a) {
+  grpc_arg** args =
+      static_cast<grpc_arg**>(gpr_malloc(sizeof(grpc_arg*) * a->num_args));
+  for (size_t i = 0; i < a->num_args; i++) {
+    args[i] = &a->args[i];
+  }
+  if (a->num_args > 1)
+    qsort(args, a->num_args, sizeof(grpc_arg*), cmp_key_stable);
+
+  grpc_channel_args* b =
+      static_cast<grpc_channel_args*>(gpr_malloc(sizeof(grpc_channel_args)));
+  b->num_args = a->num_args;
+  b->args = static_cast<grpc_arg*>(gpr_malloc(sizeof(grpc_arg) * b->num_args));
+  for (size_t i = 0; i < a->num_args; i++) {
+    b->args[i] = copy_arg(args[i]);
+  }
+
+  gpr_free(args);
+  return b;
+}
+
+void grpc_channel_args_destroy(grpc_channel_args* a) {
+  size_t i;
+  if (!a) return;
+  for (i = 0; i < a->num_args; i++) {
+    switch (a->args[i].type) {
+      case GRPC_ARG_STRING:
+        gpr_free(a->args[i].value.string);
+        break;
+      case GRPC_ARG_INTEGER:
+        break;
+      case GRPC_ARG_POINTER:
+        a->args[i].value.pointer.vtable->destroy(a->args[i].value.pointer.p);
+        break;
+    }
+    gpr_free(a->args[i].key);
+  }
+  gpr_free(a->args);
+  gpr_free(a);
+}
+
+int grpc_channel_args_compare(const grpc_channel_args* a,
+                              const grpc_channel_args* b) {
+  if (a == nullptr && b == nullptr) return 0;
+  if (a == nullptr || b == nullptr) return a == nullptr ? -1 : 1;
+  int c = GPR_ICMP(a->num_args, b->num_args);
+  if (c != 0) return c;
+  for (size_t i = 0; i < a->num_args; i++) {
+    c = cmp_arg(&a->args[i], &b->args[i]);
+    if (c != 0) return c;
+  }
+  return 0;
+}
+
+const grpc_arg* grpc_channel_args_find(const grpc_channel_args* args,
+                                       const char* name) {
+  if (args != nullptr) {
+    for (size_t i = 0; i < args->num_args; ++i) {
+      if (strcmp(args->args[i].key, name) == 0) {
+        return &args->args[i];
+      }
+    }
+  }
+  return nullptr;
+}
+
+int grpc_channel_arg_get_integer(const grpc_arg* arg,
+                                 const grpc_integer_options options) {
+  if (arg == nullptr) return options.default_value;
+  if (arg->type != GRPC_ARG_INTEGER) {
+    gpr_log(GPR_ERROR, "%s ignored: it must be an integer", arg->key);
+    return options.default_value;
+  }
+  if (arg->value.integer < options.min_value) {
+    gpr_log(GPR_ERROR, "%s ignored: it must be >= %d", arg->key,
+            options.min_value);
+    return options.default_value;
+  }
+  if (arg->value.integer > options.max_value) {
+    gpr_log(GPR_ERROR, "%s ignored: it must be <= %d", arg->key,
+            options.max_value);
+    return options.default_value;
+  }
+  return arg->value.integer;
+}
+
+int grpc_channel_args_find_integer(const grpc_channel_args* args,
+                                   const char* name,
+                                   const grpc_integer_options options) {
+  const grpc_arg* arg = grpc_channel_args_find(args, name);
+  return grpc_channel_arg_get_integer(arg, options);
+}
+
+char* grpc_channel_arg_get_string(const grpc_arg* arg) {
+  if (arg == nullptr) return nullptr;
+  if (arg->type != GRPC_ARG_STRING) {
+    gpr_log(GPR_ERROR, "%s ignored: it must be an string", arg->key);
+    return nullptr;
+  }
+  return arg->value.string;
+}
+
+char* grpc_channel_args_find_string(const grpc_channel_args* args,
+                                    const char* name) {
+  const grpc_arg* arg = grpc_channel_args_find(args, name);
+  return grpc_channel_arg_get_string(arg);
+}
+
+bool grpc_channel_arg_get_bool(const grpc_arg* arg, bool default_value) {
+  if (arg == nullptr) return default_value;
+  if (arg->type != GRPC_ARG_INTEGER) {
+    gpr_log(GPR_ERROR, "%s ignored: it must be an integer", arg->key);
+    return default_value;
+  }
+  switch (arg->value.integer) {
+    case 0:
+      return false;
+    case 1:
+      return true;
+    default:
+      gpr_log(GPR_ERROR, "%s treated as bool but set to %d (assuming true)",
+              arg->key, arg->value.integer);
+      return true;
+  }
+}
+
+bool grpc_channel_args_find_bool(const grpc_channel_args* args,
+                                 const char* name, bool default_value) {
+  const grpc_arg* arg = grpc_channel_args_find(args, name);
+  return grpc_channel_arg_get_bool(arg, default_value);
+}
+
+bool grpc_channel_args_want_minimal_stack(const grpc_channel_args* args) {
+  return grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args, GRPC_ARG_MINIMAL_STACK), false);
+}
+
+grpc_arg grpc_channel_arg_string_create(char* name, char* value) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = name;
+  arg.value.string = value;
+  return arg;
+}
+
+grpc_arg grpc_channel_arg_integer_create(char* name, int value) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_INTEGER;
+  arg.key = name;
+  arg.value.integer = value;
+  return arg;
+}
+
+grpc_arg grpc_channel_arg_pointer_create(
+    char* name, void* value, const grpc_arg_pointer_vtable* vtable) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = name;
+  arg.value.pointer.p = value;
+  arg.value.pointer.vtable = vtable;
+  return arg;
+}
+
+char* grpc_channel_args_string(const grpc_channel_args* args) {
+  if (args == nullptr) return nullptr;
+  gpr_strvec v;
+  gpr_strvec_init(&v);
+  for (size_t i = 0; i < args->num_args; ++i) {
+    const grpc_arg& arg = args->args[i];
+    char* s;
+    switch (arg.type) {
+      case GRPC_ARG_INTEGER:
+        gpr_asprintf(&s, "%s=%d", arg.key, arg.value.integer);
+        break;
+      case GRPC_ARG_STRING:
+        gpr_asprintf(&s, "%s=%s", arg.key, arg.value.string);
+        break;
+      case GRPC_ARG_POINTER:
+        gpr_asprintf(&s, "%s=%p", arg.key, arg.value.pointer.p);
+        break;
+      default:
+        gpr_asprintf(&s, "arg with unknown type");
+    }
+    gpr_strvec_add(&v, s);
+  }
+  char* result =
+      gpr_strjoin_sep(const_cast<const char**>(v.strs), v.count, ", ", nullptr);
+  gpr_strvec_destroy(&v);
+  return result;
+}
+
+namespace {
+grpc_channel_args_client_channel_creation_mutator g_mutator = nullptr;
+}  // namespace
+
+void grpc_channel_args_set_client_channel_creation_mutator(
+    grpc_channel_args_client_channel_creation_mutator cb) {
+  GPR_DEBUG_ASSERT(g_mutator == nullptr);
+  g_mutator = cb;
+}
+grpc_channel_args_client_channel_creation_mutator
+grpc_channel_args_get_client_channel_creation_mutator() {
+  return g_mutator;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.h
new file mode 100644
index 0000000..df105fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_args.h	
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/surface/channel_stack_type.h"
+
+// Channel args are intentionally immutable, to avoid the need for locking.
+
+/** Copy the arguments in \a src into a new instance */
+grpc_channel_args* grpc_channel_args_copy(const grpc_channel_args* src);
+
+/** Copy the arguments in \a src into a new instance, stably sorting keys */
+grpc_channel_args* grpc_channel_args_normalize(const grpc_channel_args* src);
+
+/** Copy the arguments in \a src and append \a to_add. If \a to_add is NULL, it
+ * is equivalent to calling \a grpc_channel_args_copy. */
+grpc_channel_args* grpc_channel_args_copy_and_add(const grpc_channel_args* src,
+                                                  const grpc_arg* to_add,
+                                                  size_t num_to_add);
+
+/** Copies the arguments in \a src except for those whose keys are in
+    \a to_remove. */
+grpc_channel_args* grpc_channel_args_copy_and_remove(
+    const grpc_channel_args* src, const char** to_remove, size_t num_to_remove);
+
+/** Copies the arguments from \a src except for those whose keys are in
+    \a to_remove and appends the arguments in \a to_add. */
+grpc_channel_args* grpc_channel_args_copy_and_add_and_remove(
+    const grpc_channel_args* src, const char** to_remove, size_t num_to_remove,
+    const grpc_arg* to_add, size_t num_to_add);
+
+/** Perform the union of \a a and \a b, prioritizing \a a entries */
+grpc_channel_args* grpc_channel_args_union(const grpc_channel_args* a,
+                                           const grpc_channel_args* b);
+
+/** Destroy arguments created by \a grpc_channel_args_copy */
+void grpc_channel_args_destroy(grpc_channel_args* a);
+inline void grpc_channel_args_destroy(const grpc_channel_args* a) {
+  grpc_channel_args_destroy(const_cast<grpc_channel_args*>(a));
+}
+
+int grpc_channel_args_compare(const grpc_channel_args* a,
+                              const grpc_channel_args* b);
+
+/** Returns the value of argument \a name from \a args, or NULL if not found. */
+const grpc_arg* grpc_channel_args_find(const grpc_channel_args* args,
+                                       const char* name);
+
+bool grpc_channel_args_want_minimal_stack(const grpc_channel_args* args);
+
+typedef struct grpc_integer_options {
+  int default_value;  // Return this if value is outside of expected bounds.
+  int min_value;
+  int max_value;
+} grpc_integer_options;
+
+/** Returns the value of \a arg, subject to the constraints in \a options. */
+int grpc_channel_arg_get_integer(const grpc_arg* arg,
+                                 const grpc_integer_options options);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+int grpc_channel_args_find_integer(const grpc_channel_args* args,
+                                   const char* name,
+                                   const grpc_integer_options options);
+
+/** Returns the value of \a arg if \a arg is of type GRPC_ARG_STRING.
+    Otherwise, emits a warning log, and returns nullptr.
+    If arg is nullptr, returns nullptr, and does not emit a warning. */
+char* grpc_channel_arg_get_string(const grpc_arg* arg);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+char* grpc_channel_args_find_string(const grpc_channel_args* args,
+                                    const char* name);
+/** If \a arg is of type GRPC_ARG_INTEGER, returns true if it's non-zero.
+ * Returns \a default_value if \a arg is of other types. */
+bool grpc_channel_arg_get_bool(const grpc_arg* arg, bool default_value);
+/** Similar to the above, but needs to find the arg from \a args by the name
+ * first. */
+bool grpc_channel_args_find_bool(const grpc_channel_args* args,
+                                 const char* name, bool default_value);
+
+template <typename T>
+T* grpc_channel_args_find_pointer(const grpc_channel_args* args,
+                                  const char* name) {
+  const grpc_arg* arg = grpc_channel_args_find(args, name);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return nullptr;
+  return static_cast<T*>(arg->value.pointer.p);
+}
+
+// Helpers for creating channel args.
+grpc_arg grpc_channel_arg_string_create(char* name, char* value);
+grpc_arg grpc_channel_arg_integer_create(char* name, int value);
+grpc_arg grpc_channel_arg_pointer_create(char* name, void* value,
+                                         const grpc_arg_pointer_vtable* vtable);
+
+// Returns a string representing channel args in human-readable form.
+// Callers takes ownership of result.
+char* grpc_channel_args_string(const grpc_channel_args* args);
+
+// Takes ownership of the old_args
+typedef grpc_channel_args* (*grpc_channel_args_client_channel_creation_mutator)(
+    const char* target, grpc_channel_args* old_args,
+    grpc_channel_stack_type type);
+
+// Should be called only once globaly before grpc is init'ed.
+void grpc_channel_args_set_client_channel_creation_mutator(
+    grpc_channel_args_client_channel_creation_mutator cb);
+// This will be called at the creation of each channel.
+grpc_channel_args_client_channel_creation_mutator
+grpc_channel_args_get_client_channel_creation_mutator();
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.cc
new file mode 100644
index 0000000..e9b3489
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.cc	
@@ -0,0 +1,252 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/alloc.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+grpc_core::TraceFlag grpc_trace_channel(false, "channel");
+
+/* Memory layouts.
+
+   Channel stack is laid out as: {
+     grpc_channel_stack stk;
+     padding to GPR_MAX_ALIGNMENT
+     grpc_channel_element[stk.count];
+     per-filter memory, aligned to GPR_MAX_ALIGNMENT
+   }
+
+   Call stack is laid out as: {
+     grpc_call_stack stk;
+     padding to GPR_MAX_ALIGNMENT
+     grpc_call_element[stk.count];
+     per-filter memory, aligned to GPR_MAX_ALIGNMENT
+   } */
+
+size_t grpc_channel_stack_size(const grpc_channel_filter** filters,
+                               size_t filter_count) {
+  /* always need the header, and size for the channel elements */
+  size_t size = GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_channel_stack)) +
+                GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filter_count *
+                                               sizeof(grpc_channel_element));
+  size_t i;
+
+  GPR_ASSERT((GPR_MAX_ALIGNMENT & (GPR_MAX_ALIGNMENT - 1)) == 0 &&
+             "GPR_MAX_ALIGNMENT must be a power of two");
+
+  /* add the size for each filter */
+  for (i = 0; i < filter_count; i++) {
+    size += GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filters[i]->sizeof_channel_data);
+  }
+
+  return size;
+}
+
+#define CHANNEL_ELEMS_FROM_STACK(stk)                                     \
+  ((grpc_channel_element*)((char*)(stk) + GPR_ROUND_UP_TO_ALIGNMENT_SIZE( \
+                                              sizeof(grpc_channel_stack))))
+
+#define CALL_ELEMS_FROM_STACK(stk)                                     \
+  ((grpc_call_element*)((char*)(stk) + GPR_ROUND_UP_TO_ALIGNMENT_SIZE( \
+                                           sizeof(grpc_call_stack))))
+
+grpc_channel_element* grpc_channel_stack_element(
+    grpc_channel_stack* channel_stack, size_t index) {
+  return CHANNEL_ELEMS_FROM_STACK(channel_stack) + index;
+}
+
+grpc_channel_element* grpc_channel_stack_last_element(
+    grpc_channel_stack* channel_stack) {
+  return grpc_channel_stack_element(channel_stack, channel_stack->count - 1);
+}
+
+grpc_call_element* grpc_call_stack_element(grpc_call_stack* call_stack,
+                                           size_t index) {
+  return CALL_ELEMS_FROM_STACK(call_stack) + index;
+}
+
+grpc_error* grpc_channel_stack_init(
+    int initial_refs, grpc_iomgr_cb_func destroy, void* destroy_arg,
+    const grpc_channel_filter** filters, size_t filter_count,
+    const grpc_channel_args* channel_args, grpc_transport* optional_transport,
+    const char* name, grpc_channel_stack* stack) {
+  size_t call_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call_stack)) +
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filter_count * sizeof(grpc_call_element));
+  grpc_channel_element* elems;
+  grpc_channel_element_args args;
+  char* user_data;
+  size_t i;
+
+  stack->count = filter_count;
+  GRPC_STREAM_REF_INIT(&stack->refcount, initial_refs, destroy, destroy_arg,
+                       name);
+  elems = CHANNEL_ELEMS_FROM_STACK(stack);
+  user_data = (reinterpret_cast<char*>(elems)) +
+              GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filter_count *
+                                             sizeof(grpc_channel_element));
+
+  /* init per-filter data */
+  grpc_error* first_error = GRPC_ERROR_NONE;
+  for (i = 0; i < filter_count; i++) {
+    args.channel_stack = stack;
+    args.channel_args = channel_args;
+    args.optional_transport = optional_transport;
+    args.is_first = i == 0;
+    args.is_last = i == (filter_count - 1);
+    elems[i].filter = filters[i];
+    elems[i].channel_data = user_data;
+    grpc_error* error = elems[i].filter->init_channel_elem(&elems[i], &args);
+    if (error != GRPC_ERROR_NONE) {
+      if (first_error == GRPC_ERROR_NONE) {
+        first_error = error;
+      } else {
+        GRPC_ERROR_UNREF(error);
+      }
+    }
+    user_data +=
+        GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filters[i]->sizeof_channel_data);
+    call_size += GPR_ROUND_UP_TO_ALIGNMENT_SIZE(filters[i]->sizeof_call_data);
+  }
+
+  GPR_ASSERT(user_data > (char*)stack);
+  GPR_ASSERT((uintptr_t)(user_data - (char*)stack) ==
+             grpc_channel_stack_size(filters, filter_count));
+
+  stack->call_stack_size = call_size;
+  return first_error;
+}
+
+void grpc_channel_stack_destroy(grpc_channel_stack* stack) {
+  grpc_channel_element* channel_elems = CHANNEL_ELEMS_FROM_STACK(stack);
+  size_t count = stack->count;
+  size_t i;
+
+  /* destroy per-filter data */
+  for (i = 0; i < count; i++) {
+    channel_elems[i].filter->destroy_channel_elem(&channel_elems[i]);
+  }
+}
+
+grpc_error* grpc_call_stack_init(grpc_channel_stack* channel_stack,
+                                 int initial_refs, grpc_iomgr_cb_func destroy,
+                                 void* destroy_arg,
+                                 const grpc_call_element_args* elem_args) {
+  grpc_channel_element* channel_elems = CHANNEL_ELEMS_FROM_STACK(channel_stack);
+  size_t count = channel_stack->count;
+  grpc_call_element* call_elems;
+  char* user_data;
+
+  elem_args->call_stack->count = count;
+  GRPC_STREAM_REF_INIT(&elem_args->call_stack->refcount, initial_refs, destroy,
+                       destroy_arg, "CALL_STACK");
+  call_elems = CALL_ELEMS_FROM_STACK(elem_args->call_stack);
+  user_data = (reinterpret_cast<char*>(call_elems)) +
+              GPR_ROUND_UP_TO_ALIGNMENT_SIZE(count * sizeof(grpc_call_element));
+
+  /* init per-filter data */
+  grpc_error* first_error = GRPC_ERROR_NONE;
+  for (size_t i = 0; i < count; i++) {
+    call_elems[i].filter = channel_elems[i].filter;
+    call_elems[i].channel_data = channel_elems[i].channel_data;
+    call_elems[i].call_data = user_data;
+    user_data +=
+        GPR_ROUND_UP_TO_ALIGNMENT_SIZE(call_elems[i].filter->sizeof_call_data);
+  }
+  for (size_t i = 0; i < count; i++) {
+    grpc_error* error =
+        call_elems[i].filter->init_call_elem(&call_elems[i], elem_args);
+    if (error != GRPC_ERROR_NONE) {
+      if (first_error == GRPC_ERROR_NONE) {
+        first_error = error;
+      } else {
+        GRPC_ERROR_UNREF(error);
+      }
+    }
+  }
+  return first_error;
+}
+
+void grpc_call_stack_set_pollset_or_pollset_set(grpc_call_stack* call_stack,
+                                                grpc_polling_entity* pollent) {
+  size_t count = call_stack->count;
+  grpc_call_element* call_elems;
+  size_t i;
+
+  call_elems = CALL_ELEMS_FROM_STACK(call_stack);
+
+  /* init per-filter data */
+  for (i = 0; i < count; i++) {
+    call_elems[i].filter->set_pollset_or_pollset_set(&call_elems[i], pollent);
+  }
+}
+
+void grpc_call_stack_ignore_set_pollset_or_pollset_set(
+    grpc_call_element* /*elem*/, grpc_polling_entity* /*pollent*/) {}
+
+void grpc_call_stack_destroy(grpc_call_stack* stack,
+                             const grpc_call_final_info* final_info,
+                             grpc_closure* then_schedule_closure) {
+  grpc_call_element* elems = CALL_ELEMS_FROM_STACK(stack);
+  size_t count = stack->count;
+  size_t i;
+
+  /* destroy per-filter data */
+  for (i = 0; i < count; i++) {
+    elems[i].filter->destroy_call_elem(
+        &elems[i], final_info,
+        i == count - 1 ? then_schedule_closure : nullptr);
+  }
+}
+
+void grpc_call_next_op(grpc_call_element* elem,
+                       grpc_transport_stream_op_batch* op) {
+  grpc_call_element* next_elem = elem + 1;
+  GRPC_CALL_LOG_OP(GPR_INFO, next_elem, op);
+  next_elem->filter->start_transport_stream_op_batch(next_elem, op);
+}
+
+void grpc_channel_next_get_info(grpc_channel_element* elem,
+                                const grpc_channel_info* channel_info) {
+  grpc_channel_element* next_elem = elem + 1;
+  next_elem->filter->get_channel_info(next_elem, channel_info);
+}
+
+void grpc_channel_next_op(grpc_channel_element* elem, grpc_transport_op* op) {
+  grpc_channel_element* next_elem = elem + 1;
+  next_elem->filter->start_transport_op(next_elem, op);
+}
+
+grpc_channel_stack* grpc_channel_stack_from_top_element(
+    grpc_channel_element* elem) {
+  return reinterpret_cast<grpc_channel_stack*>(
+      reinterpret_cast<char*>(elem) -
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_channel_stack)));
+}
+
+grpc_call_stack* grpc_call_stack_from_top_element(grpc_call_element* elem) {
+  return reinterpret_cast<grpc_call_stack*>(
+      reinterpret_cast<char*>(elem) -
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call_stack)));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.h
new file mode 100644
index 0000000..f927287
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack.h	
@@ -0,0 +1,297 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
+
+//////////////////////////////////////////////////////////////////////////////
+// IMPORTANT NOTE:
+//
+// When you update this API, please make the corresponding changes to
+// the C++ API in src/cpp/common/channel_filter.{h,cc}
+//////////////////////////////////////////////////////////////////////////////
+
+/* A channel filter defines how operations on a channel are implemented.
+   Channel filters are chained together to create full channels, and if those
+   chains are linear, then channel stacks provide a mechanism to minimize
+   allocations for that chain.
+   Call stacks are created by channel stacks and represent the per-call data
+   for that stack. */
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/transport/transport.h"
+
+typedef struct grpc_channel_element grpc_channel_element;
+typedef struct grpc_call_element grpc_call_element;
+
+typedef struct grpc_channel_stack grpc_channel_stack;
+typedef struct grpc_call_stack grpc_call_stack;
+
+typedef struct {
+  grpc_channel_stack* channel_stack;
+  const grpc_channel_args* channel_args;
+  /** Transport, iff it is known */
+  grpc_transport* optional_transport;
+  int is_first;
+  int is_last;
+} grpc_channel_element_args;
+
+typedef struct {
+  grpc_call_stack* call_stack;
+  const void* server_transport_data;
+  grpc_call_context_element* context;
+  const grpc_slice& path;
+  gpr_cycle_counter start_time;
+  grpc_millis deadline;
+  grpc_core::Arena* arena;
+  grpc_core::CallCombiner* call_combiner;
+} grpc_call_element_args;
+
+typedef struct {
+  grpc_transport_stream_stats transport_stream_stats;
+  gpr_timespec latency; /* From call creating to enqueing of received status */
+} grpc_call_stats;
+
+/** Information about the call upon completion. */
+struct grpc_call_final_info {
+  grpc_call_stats stats;
+  grpc_status_code final_status = GRPC_STATUS_OK;
+  const char* error_string = nullptr;
+};
+
+/* Channel filters specify:
+   1. the amount of memory needed in the channel & call (via the sizeof_XXX
+      members)
+   2. functions to initialize and destroy channel & call data
+      (init_XXX, destroy_XXX)
+   3. functions to implement call operations and channel operations (call_op,
+      channel_op)
+   4. a name, which is useful when debugging
+
+   Members are laid out in approximate frequency of use order. */
+typedef struct {
+  /* Called to eg. send/receive data on a call.
+     See grpc_call_next_op on how to call the next element in the stack */
+  void (*start_transport_stream_op_batch)(grpc_call_element* elem,
+                                          grpc_transport_stream_op_batch* op);
+  /* Called to handle channel level operations - e.g. new calls, or transport
+     closure.
+     See grpc_channel_next_op on how to call the next element in the stack */
+  void (*start_transport_op)(grpc_channel_element* elem, grpc_transport_op* op);
+
+  /* sizeof(per call data) */
+  size_t sizeof_call_data;
+  /* Initialize per call data.
+     elem is initialized at the start of the call, and elem->call_data is what
+     needs initializing.
+     The filter does not need to do any chaining.
+     server_transport_data is an opaque pointer. If it is NULL, this call is
+     on a client; if it is non-NULL, then it points to memory owned by the
+     transport and is on the server. Most filters want to ignore this
+     argument.
+     Implementations may assume that elem->call_data is all zeros. */
+  grpc_error* (*init_call_elem)(grpc_call_element* elem,
+                                const grpc_call_element_args* args);
+  void (*set_pollset_or_pollset_set)(grpc_call_element* elem,
+                                     grpc_polling_entity* pollent);
+  /* Destroy per call data.
+     The filter does not need to do any chaining.
+     The bottom filter of a stack will be passed a non-NULL pointer to
+     \a then_schedule_closure that should be passed to GRPC_CLOSURE_SCHED when
+     destruction is complete. \a final_info contains data about the completed
+     call, mainly for reporting purposes. */
+  void (*destroy_call_elem)(grpc_call_element* elem,
+                            const grpc_call_final_info* final_info,
+                            grpc_closure* then_schedule_closure);
+
+  /* sizeof(per channel data) */
+  size_t sizeof_channel_data;
+  /* Initialize per-channel data.
+     elem is initialized at the creating of the channel, and elem->channel_data
+     is what needs initializing.
+     is_first, is_last designate this elements position in the stack, and are
+     useful for asserting correct configuration by upper layer code.
+     The filter does not need to do any chaining.
+     Implementations may assume that elem->channel_data is all zeros. */
+  grpc_error* (*init_channel_elem)(grpc_channel_element* elem,
+                                   grpc_channel_element_args* args);
+  /* Destroy per channel data.
+     The filter does not need to do any chaining */
+  void (*destroy_channel_elem)(grpc_channel_element* elem);
+
+  /* Implement grpc_channel_get_info() */
+  void (*get_channel_info)(grpc_channel_element* elem,
+                           const grpc_channel_info* channel_info);
+
+  /* The name of this filter */
+  const char* name;
+} grpc_channel_filter;
+
+/* A channel_element tracks its filter and the filter requested memory within
+   a channel allocation */
+struct grpc_channel_element {
+  const grpc_channel_filter* filter;
+  void* channel_data;
+};
+
+/* A call_element tracks its filter, the filter requested memory within
+   a channel allocation, and the filter requested memory within a call
+   allocation */
+struct grpc_call_element {
+  const grpc_channel_filter* filter;
+  void* channel_data;
+  void* call_data;
+};
+
+/* A channel stack tracks a set of related filters for one channel, and
+   guarantees they live within a single malloc() allocation */
+struct grpc_channel_stack {
+  grpc_stream_refcount refcount;
+  size_t count;
+  /* Memory required for a call stack (computed at channel stack
+     initialization) */
+  size_t call_stack_size;
+};
+
+/* A call stack tracks a set of related filters for one call, and guarantees
+   they live within a single malloc() allocation */
+struct grpc_call_stack {
+  /* shared refcount for this channel stack.
+     MUST be the first element: the underlying code calls destroy
+     with the address of the refcount, but higher layers prefer to think
+     about the address of the call stack itself. */
+  grpc_stream_refcount refcount;
+  size_t count;
+};
+
+/* Get a channel element given a channel stack and its index */
+grpc_channel_element* grpc_channel_stack_element(grpc_channel_stack* stack,
+                                                 size_t i);
+/* Get the last channel element in a channel stack */
+grpc_channel_element* grpc_channel_stack_last_element(
+    grpc_channel_stack* stack);
+/* Get a call stack element given a call stack and an index */
+grpc_call_element* grpc_call_stack_element(grpc_call_stack* stack, size_t i);
+
+/* Determine memory required for a channel stack containing a set of filters */
+size_t grpc_channel_stack_size(const grpc_channel_filter** filters,
+                               size_t filter_count);
+/* Initialize a channel stack given some filters */
+grpc_error* grpc_channel_stack_init(
+    int initial_refs, grpc_iomgr_cb_func destroy, void* destroy_arg,
+    const grpc_channel_filter** filters, size_t filter_count,
+    const grpc_channel_args* args, grpc_transport* optional_transport,
+    const char* name, grpc_channel_stack* stack);
+/* Destroy a channel stack */
+void grpc_channel_stack_destroy(grpc_channel_stack* stack);
+
+/* Initialize a call stack given a channel stack. transport_server_data is
+   expected to be NULL on a client, or an opaque transport owned pointer on the
+   server. */
+grpc_error* grpc_call_stack_init(grpc_channel_stack* channel_stack,
+                                 int initial_refs, grpc_iomgr_cb_func destroy,
+                                 void* destroy_arg,
+                                 const grpc_call_element_args* elem_args);
+/* Set a pollset or a pollset_set for a call stack: must occur before the first
+ * op is started */
+void grpc_call_stack_set_pollset_or_pollset_set(grpc_call_stack* call_stack,
+                                                grpc_polling_entity* pollent);
+
+#ifndef NDEBUG
+#define GRPC_CALL_STACK_REF(call_stack, reason) \
+  grpc_stream_ref(&(call_stack)->refcount, reason)
+#define GRPC_CALL_STACK_UNREF(call_stack, reason) \
+  grpc_stream_unref(&(call_stack)->refcount, reason)
+#define GRPC_CHANNEL_STACK_REF(channel_stack, reason) \
+  grpc_stream_ref(&(channel_stack)->refcount, reason)
+#define GRPC_CHANNEL_STACK_UNREF(channel_stack, reason) \
+  grpc_stream_unref(&(channel_stack)->refcount, reason)
+#else
+#define GRPC_CALL_STACK_REF(call_stack, reason) \
+  do {                                          \
+    grpc_stream_ref(&(call_stack)->refcount);   \
+    (void)(reason);                             \
+  } while (0);
+#define GRPC_CALL_STACK_UNREF(call_stack, reason) \
+  do {                                            \
+    grpc_stream_unref(&(call_stack)->refcount);   \
+    (void)(reason);                               \
+  } while (0);
+#define GRPC_CHANNEL_STACK_REF(channel_stack, reason) \
+  do {                                                \
+    grpc_stream_ref(&(channel_stack)->refcount);      \
+    (void)(reason);                                   \
+  } while (0);
+#define GRPC_CHANNEL_STACK_UNREF(channel_stack, reason) \
+  do {                                                  \
+    grpc_stream_unref(&(channel_stack)->refcount);      \
+    (void)(reason);                                     \
+  } while (0);
+#endif
+
+/* Destroy a call stack */
+void grpc_call_stack_destroy(grpc_call_stack* stack,
+                             const grpc_call_final_info* final_info,
+                             grpc_closure* then_schedule_closure);
+
+/* Ignore set pollset{_set} - used by filters if they don't care about pollsets
+ * at all. Does nothing. */
+void grpc_call_stack_ignore_set_pollset_or_pollset_set(
+    grpc_call_element* elem, grpc_polling_entity* pollent);
+/* Call the next operation in a call stack */
+void grpc_call_next_op(grpc_call_element* elem,
+                       grpc_transport_stream_op_batch* op);
+/* Call the next operation (depending on call directionality) in a channel
+   stack */
+void grpc_channel_next_op(grpc_channel_element* elem, grpc_transport_op* op);
+/* Pass through a request to get_channel_info() to the next child element */
+void grpc_channel_next_get_info(grpc_channel_element* elem,
+                                const grpc_channel_info* channel_info);
+
+/* Given the top element of a channel stack, get the channel stack itself */
+grpc_channel_stack* grpc_channel_stack_from_top_element(
+    grpc_channel_element* elem);
+/* Given the top element of a call stack, get the call stack itself */
+grpc_call_stack* grpc_call_stack_from_top_element(grpc_call_element* elem);
+
+void grpc_call_log_op(const char* file, int line, gpr_log_severity severity,
+                      grpc_call_element* elem,
+                      grpc_transport_stream_op_batch* op);
+
+extern grpc_core::TraceFlag grpc_trace_channel;
+
+#define GRPC_CALL_LOG_OP(sev, elem, op)                \
+  do {                                                 \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_channel)) { \
+      grpc_call_log_op(sev, elem, op);                 \
+    }                                                  \
+  } while (0)
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.cc
new file mode 100644
index 0000000..8b3008f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.cc	
@@ -0,0 +1,323 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+typedef struct filter_node {
+  struct filter_node* next;
+  struct filter_node* prev;
+  const grpc_channel_filter* filter;
+  grpc_post_filter_create_init_func init;
+  void* init_arg;
+} filter_node;
+
+struct grpc_channel_stack_builder {
+  // sentinel nodes for filters that have been added
+  filter_node begin;
+  filter_node end;
+  // various set/get-able parameters
+  grpc_channel_args* args;
+  grpc_transport* transport;
+  grpc_resource_user* resource_user;
+  char* target;
+  const char* name;
+};
+
+struct grpc_channel_stack_builder_iterator {
+  grpc_channel_stack_builder* builder;
+  filter_node* node;
+};
+
+grpc_channel_stack_builder* grpc_channel_stack_builder_create(void) {
+  grpc_channel_stack_builder* b =
+      static_cast<grpc_channel_stack_builder*>(gpr_zalloc(sizeof(*b)));
+
+  b->begin.filter = nullptr;
+  b->end.filter = nullptr;
+  b->begin.next = &b->end;
+  b->begin.prev = &b->end;
+  b->end.next = &b->begin;
+  b->end.prev = &b->begin;
+
+  return b;
+}
+
+void grpc_channel_stack_builder_set_target(grpc_channel_stack_builder* b,
+                                           const char* target) {
+  gpr_free(b->target);
+  b->target = gpr_strdup(target);
+}
+
+const char* grpc_channel_stack_builder_get_target(
+    grpc_channel_stack_builder* b) {
+  return b->target;
+}
+
+static grpc_channel_stack_builder_iterator* create_iterator_at_filter_node(
+    grpc_channel_stack_builder* builder, filter_node* node) {
+  grpc_channel_stack_builder_iterator* it =
+      static_cast<grpc_channel_stack_builder_iterator*>(
+          gpr_malloc(sizeof(*it)));
+  it->builder = builder;
+  it->node = node;
+  return it;
+}
+
+void grpc_channel_stack_builder_iterator_destroy(
+    grpc_channel_stack_builder_iterator* it) {
+  gpr_free(it);
+}
+
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_first(
+    grpc_channel_stack_builder* builder) {
+  return create_iterator_at_filter_node(builder, &builder->begin);
+}
+
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_last(
+    grpc_channel_stack_builder* builder) {
+  return create_iterator_at_filter_node(builder, &builder->end);
+}
+
+bool grpc_channel_stack_builder_iterator_is_end(
+    grpc_channel_stack_builder_iterator* iterator) {
+  return iterator->node == &iterator->builder->end;
+}
+
+const char* grpc_channel_stack_builder_iterator_filter_name(
+    grpc_channel_stack_builder_iterator* iterator) {
+  if (iterator->node->filter == nullptr) return nullptr;
+  return iterator->node->filter->name;
+}
+
+bool grpc_channel_stack_builder_move_next(
+    grpc_channel_stack_builder_iterator* iterator) {
+  if (iterator->node == &iterator->builder->end) return false;
+  iterator->node = iterator->node->next;
+  return true;
+}
+
+bool grpc_channel_stack_builder_move_prev(
+    grpc_channel_stack_builder_iterator* iterator) {
+  if (iterator->node == &iterator->builder->begin) return false;
+  iterator->node = iterator->node->prev;
+  return true;
+}
+
+grpc_channel_stack_builder_iterator* grpc_channel_stack_builder_iterator_find(
+    grpc_channel_stack_builder* builder, const char* filter_name) {
+  GPR_ASSERT(filter_name != nullptr);
+  grpc_channel_stack_builder_iterator* it =
+      grpc_channel_stack_builder_create_iterator_at_first(builder);
+  while (grpc_channel_stack_builder_move_next(it)) {
+    if (grpc_channel_stack_builder_iterator_is_end(it)) break;
+    const char* filter_name_at_it =
+        grpc_channel_stack_builder_iterator_filter_name(it);
+    if (strcmp(filter_name, filter_name_at_it) == 0) break;
+  }
+  return it;
+}
+
+bool grpc_channel_stack_builder_move_prev(
+    grpc_channel_stack_builder_iterator* iterator);
+
+void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder* builder,
+                                         const char* name) {
+  GPR_ASSERT(builder->name == nullptr);
+  builder->name = name;
+}
+
+void grpc_channel_stack_builder_set_channel_arguments(
+    grpc_channel_stack_builder* builder, const grpc_channel_args* args) {
+  if (builder->args != nullptr) {
+    grpc_channel_args_destroy(builder->args);
+  }
+  builder->args = grpc_channel_args_copy(args);
+}
+
+const grpc_channel_args* grpc_channel_stack_builder_get_channel_arguments(
+    grpc_channel_stack_builder* builder) {
+  return builder->args;
+}
+
+void grpc_channel_stack_builder_set_transport(
+    grpc_channel_stack_builder* builder, grpc_transport* transport) {
+  GPR_ASSERT(builder->transport == nullptr);
+  builder->transport = transport;
+}
+
+grpc_transport* grpc_channel_stack_builder_get_transport(
+    grpc_channel_stack_builder* builder) {
+  return builder->transport;
+}
+
+void grpc_channel_stack_builder_set_resource_user(
+    grpc_channel_stack_builder* builder, grpc_resource_user* resource_user) {
+  GPR_ASSERT(builder->resource_user == nullptr);
+  builder->resource_user = resource_user;
+}
+
+grpc_resource_user* grpc_channel_stack_builder_get_resource_user(
+    grpc_channel_stack_builder* builder) {
+  return builder->resource_user;
+}
+
+bool grpc_channel_stack_builder_append_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func, void* user_data) {
+  grpc_channel_stack_builder_iterator* it =
+      grpc_channel_stack_builder_create_iterator_at_last(builder);
+  bool ok = grpc_channel_stack_builder_add_filter_before(
+      it, filter, post_init_func, user_data);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  return ok;
+}
+
+bool grpc_channel_stack_builder_remove_filter(
+    grpc_channel_stack_builder* builder, const char* filter_name) {
+  grpc_channel_stack_builder_iterator* it =
+      grpc_channel_stack_builder_iterator_find(builder, filter_name);
+  if (grpc_channel_stack_builder_iterator_is_end(it)) {
+    grpc_channel_stack_builder_iterator_destroy(it);
+    return false;
+  }
+  it->node->prev->next = it->node->next;
+  it->node->next->prev = it->node->prev;
+  gpr_free(it->node);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  return true;
+}
+
+bool grpc_channel_stack_builder_prepend_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func, void* user_data) {
+  grpc_channel_stack_builder_iterator* it =
+      grpc_channel_stack_builder_create_iterator_at_first(builder);
+  bool ok = grpc_channel_stack_builder_add_filter_after(
+      it, filter, post_init_func, user_data);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  return ok;
+}
+
+static void add_after(filter_node* before, const grpc_channel_filter* filter,
+                      grpc_post_filter_create_init_func post_init_func,
+                      void* user_data) {
+  filter_node* new_node =
+      static_cast<filter_node*>(gpr_malloc(sizeof(*new_node)));
+  new_node->next = before->next;
+  new_node->prev = before;
+  new_node->next->prev = new_node->prev->next = new_node;
+  new_node->filter = filter;
+  new_node->init = post_init_func;
+  new_node->init_arg = user_data;
+}
+
+bool grpc_channel_stack_builder_add_filter_before(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func, void* user_data) {
+  if (iterator->node == &iterator->builder->begin) return false;
+  add_after(iterator->node->prev, filter, post_init_func, user_data);
+  return true;
+}
+
+bool grpc_channel_stack_builder_add_filter_after(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func, void* user_data) {
+  if (iterator->node == &iterator->builder->end) return false;
+  add_after(iterator->node, filter, post_init_func, user_data);
+  return true;
+}
+
+void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder* builder) {
+  filter_node* p = builder->begin.next;
+  while (p != &builder->end) {
+    filter_node* next = p->next;
+    gpr_free(p);
+    p = next;
+  }
+  if (builder->args != nullptr) {
+    grpc_channel_args_destroy(builder->args);
+  }
+  gpr_free(builder->target);
+  gpr_free(builder);
+}
+
+grpc_error* grpc_channel_stack_builder_finish(
+    grpc_channel_stack_builder* builder, size_t prefix_bytes, int initial_refs,
+    grpc_iomgr_cb_func destroy, void* destroy_arg, void** result) {
+  // count the number of filters
+  size_t num_filters = 0;
+  for (filter_node* p = builder->begin.next; p != &builder->end; p = p->next) {
+    num_filters++;
+  }
+
+  // create an array of filters
+  const grpc_channel_filter** filters =
+      static_cast<const grpc_channel_filter**>(
+          gpr_malloc(sizeof(*filters) * num_filters));
+  size_t i = 0;
+  for (filter_node* p = builder->begin.next; p != &builder->end; p = p->next) {
+    filters[i++] = p->filter;
+  }
+
+  // calculate the size of the channel stack
+  size_t channel_stack_size = grpc_channel_stack_size(filters, num_filters);
+
+  // allocate memory, with prefix_bytes followed by channel_stack_size
+  *result = gpr_zalloc(prefix_bytes + channel_stack_size);
+  // fetch a pointer to the channel stack
+  grpc_channel_stack* channel_stack = reinterpret_cast<grpc_channel_stack*>(
+      static_cast<char*>(*result) + prefix_bytes);
+  // and initialize it
+  grpc_error* error = grpc_channel_stack_init(
+      initial_refs, destroy, destroy_arg == nullptr ? *result : destroy_arg,
+      filters, num_filters, builder->args, builder->transport, builder->name,
+      channel_stack);
+
+  if (error != GRPC_ERROR_NONE) {
+    grpc_channel_stack_destroy(channel_stack);
+    gpr_free(*result);
+    *result = nullptr;
+  } else {
+    // run post-initialization functions
+    i = 0;
+    for (filter_node* p = builder->begin.next; p != &builder->end;
+         p = p->next) {
+      if (p->init != nullptr) {
+        p->init(channel_stack, grpc_channel_stack_element(channel_stack, i),
+                p->init_arg);
+      }
+      i++;
+    }
+  }
+
+  grpc_channel_stack_builder_destroy(builder);
+  gpr_free(const_cast<grpc_channel_filter**>(filters));
+
+  return error;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.h
new file mode 100644
index 0000000..89c30e0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_stack_builder.h	
@@ -0,0 +1,166 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
+
+/// grpc_channel_stack_builder offers a programmatic interface to selected
+/// and order channel filters
+typedef struct grpc_channel_stack_builder grpc_channel_stack_builder;
+typedef struct grpc_channel_stack_builder_iterator
+    grpc_channel_stack_builder_iterator;
+
+/// Create a new channel stack builder
+grpc_channel_stack_builder* grpc_channel_stack_builder_create(void);
+
+/// Assign a name to the channel stack: \a name must be statically allocated
+void grpc_channel_stack_builder_set_name(grpc_channel_stack_builder* builder,
+                                         const char* name);
+
+/// Set the target uri
+void grpc_channel_stack_builder_set_target(grpc_channel_stack_builder* b,
+                                           const char* target);
+
+const char* grpc_channel_stack_builder_get_target(
+    grpc_channel_stack_builder* b);
+
+/// Attach \a transport to the builder (does not take ownership)
+void grpc_channel_stack_builder_set_transport(
+    grpc_channel_stack_builder* builder, grpc_transport* transport);
+
+/// Fetch attached transport
+grpc_transport* grpc_channel_stack_builder_get_transport(
+    grpc_channel_stack_builder* builder);
+
+/// Attach \a resource_user to the builder (does not take ownership)
+void grpc_channel_stack_builder_set_resource_user(
+    grpc_channel_stack_builder* builder, grpc_resource_user* resource_user);
+
+/// Fetch attached resource user
+grpc_resource_user* grpc_channel_stack_builder_get_resource_user(
+    grpc_channel_stack_builder* builder);
+
+/// Set channel arguments: copies args
+void grpc_channel_stack_builder_set_channel_arguments(
+    grpc_channel_stack_builder* builder, const grpc_channel_args* args);
+
+/// Return a borrowed pointer to the channel arguments
+const grpc_channel_args* grpc_channel_stack_builder_get_channel_arguments(
+    grpc_channel_stack_builder* builder);
+
+/// Begin iterating over already defined filters in the builder at the beginning
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_first(
+    grpc_channel_stack_builder* builder);
+
+/// Begin iterating over already defined filters in the builder at the end
+grpc_channel_stack_builder_iterator*
+grpc_channel_stack_builder_create_iterator_at_last(
+    grpc_channel_stack_builder* builder);
+
+/// Is an iterator at the first element?
+bool grpc_channel_stack_builder_iterator_is_first(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Is an iterator at the end?
+bool grpc_channel_stack_builder_iterator_is_end(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// What is the name of the filter at this iterator position?
+const char* grpc_channel_stack_builder_iterator_filter_name(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Move an iterator to the next item
+bool grpc_channel_stack_builder_move_next(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Move an iterator to the previous item
+bool grpc_channel_stack_builder_move_prev(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Return an iterator at \a filter_name, or at the end of the list if not
+/// found.
+grpc_channel_stack_builder_iterator* grpc_channel_stack_builder_iterator_find(
+    grpc_channel_stack_builder* builder, const char* filter_name);
+
+typedef void (*grpc_post_filter_create_init_func)(
+    grpc_channel_stack* channel_stack, grpc_channel_element* elem, void* arg);
+
+/// Add \a filter to the stack, after \a iterator.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_add_filter_after(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the stack, before \a iterator.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_add_filter_before(
+    grpc_channel_stack_builder_iterator* iterator,
+    const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the beginning of the filter list.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_prepend_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Add \a filter to the end of the filter list.
+/// Call \a post_init_func(..., \a user_data) once the channel stack is
+/// created.
+bool grpc_channel_stack_builder_append_filter(
+    grpc_channel_stack_builder* builder, const grpc_channel_filter* filter,
+    grpc_post_filter_create_init_func post_init_func,
+    void* user_data) GRPC_MUST_USE_RESULT;
+
+/// Remove any filter whose name is \a filter_name from \a builder. Returns true
+/// if \a filter_name was not found.
+bool grpc_channel_stack_builder_remove_filter(
+    grpc_channel_stack_builder* builder, const char* filter_name);
+
+/// Terminate iteration and destroy \a iterator
+void grpc_channel_stack_builder_iterator_destroy(
+    grpc_channel_stack_builder_iterator* iterator);
+
+/// Destroy the builder, return the freshly minted channel stack in \a result.
+/// Allocates \a prefix_bytes bytes before the channel stack
+/// Returns the base pointer of the allocated block
+/// \a initial_refs, \a destroy, \a destroy_arg are as per
+/// grpc_channel_stack_init
+grpc_error* grpc_channel_stack_builder_finish(
+    grpc_channel_stack_builder* builder, size_t prefix_bytes, int initial_refs,
+    grpc_iomgr_cb_func destroy, void* destroy_arg, void** result);
+
+/// Destroy the builder without creating a channel stack
+void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder* builder);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.cc
new file mode 100644
index 0000000..a26533f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.cc	
@@ -0,0 +1,194 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include "src/core/lib/channel/channel_trace.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+
+namespace grpc_core {
+namespace channelz {
+
+ChannelTrace::TraceEvent::TraceEvent(Severity severity, const grpc_slice& data,
+                                     RefCountedPtr<BaseNode> referenced_entity)
+    : severity_(severity),
+      data_(data),
+      timestamp_(grpc_millis_to_timespec(grpc_core::ExecCtx::Get()->Now(),
+                                         GPR_CLOCK_REALTIME)),
+      next_(nullptr),
+      referenced_entity_(std::move(referenced_entity)),
+      memory_usage_(sizeof(TraceEvent) + grpc_slice_memory_usage(data)) {}
+
+ChannelTrace::TraceEvent::TraceEvent(Severity severity, const grpc_slice& data)
+    : severity_(severity),
+      data_(data),
+      timestamp_(grpc_millis_to_timespec(grpc_core::ExecCtx::Get()->Now(),
+                                         GPR_CLOCK_REALTIME)),
+      next_(nullptr),
+      memory_usage_(sizeof(TraceEvent) + grpc_slice_memory_usage(data)) {}
+
+ChannelTrace::TraceEvent::~TraceEvent() { grpc_slice_unref_internal(data_); }
+
+ChannelTrace::ChannelTrace(size_t max_event_memory)
+    : num_events_logged_(0),
+      event_list_memory_usage_(0),
+      max_event_memory_(max_event_memory),
+      head_trace_(nullptr),
+      tail_trace_(nullptr) {
+  if (max_event_memory_ == 0)
+    return;  // tracing is disabled if max_event_memory_ == 0
+  gpr_mu_init(&tracer_mu_);
+  time_created_ = grpc_millis_to_timespec(grpc_core::ExecCtx::Get()->Now(),
+                                          GPR_CLOCK_REALTIME);
+}
+
+ChannelTrace::~ChannelTrace() {
+  if (max_event_memory_ == 0)
+    return;  // tracing is disabled if max_event_memory_ == 0
+  TraceEvent* it = head_trace_;
+  while (it != nullptr) {
+    TraceEvent* to_free = it;
+    it = it->next();
+    delete to_free;
+  }
+  gpr_mu_destroy(&tracer_mu_);
+}
+
+void ChannelTrace::AddTraceEventHelper(TraceEvent* new_trace_event) {
+  ++num_events_logged_;
+  // first event case
+  if (head_trace_ == nullptr) {
+    head_trace_ = tail_trace_ = new_trace_event;
+  }
+  // regular event add case
+  else {
+    tail_trace_->set_next(new_trace_event);
+    tail_trace_ = tail_trace_->next();
+  }
+  event_list_memory_usage_ += new_trace_event->memory_usage();
+  // maybe garbage collect the tail until we are under the memory limit.
+  while (event_list_memory_usage_ > max_event_memory_) {
+    TraceEvent* to_free = head_trace_;
+    event_list_memory_usage_ -= to_free->memory_usage();
+    head_trace_ = head_trace_->next();
+    delete to_free;
+  }
+}
+
+void ChannelTrace::AddTraceEvent(Severity severity, const grpc_slice& data) {
+  if (max_event_memory_ == 0) {
+    grpc_slice_unref_internal(data);
+    return;  // tracing is disabled if max_event_memory_ == 0
+  }
+  AddTraceEventHelper(new TraceEvent(severity, data));
+}
+
+void ChannelTrace::AddTraceEventWithReference(
+    Severity severity, const grpc_slice& data,
+    RefCountedPtr<BaseNode> referenced_entity) {
+  if (max_event_memory_ == 0) {
+    grpc_slice_unref_internal(data);
+    return;  // tracing is disabled if max_event_memory_ == 0
+  }
+  // create and fill up the new event
+  AddTraceEventHelper(
+      new TraceEvent(severity, data, std::move(referenced_entity)));
+}
+
+namespace {
+
+const char* severity_string(ChannelTrace::Severity severity) {
+  switch (severity) {
+    case ChannelTrace::Severity::Info:
+      return "CT_INFO";
+    case ChannelTrace::Severity::Warning:
+      return "CT_WARNING";
+    case ChannelTrace::Severity::Error:
+      return "CT_ERROR";
+    default:
+      GPR_UNREACHABLE_CODE(return "CT_UNKNOWN");
+  }
+}
+
+}  // anonymous namespace
+
+Json ChannelTrace::TraceEvent::RenderTraceEvent() const {
+  char* description = grpc_slice_to_c_string(data_);
+  char* ts_str = gpr_format_timespec(timestamp_);
+  Json::Object object = {
+      {"description", description},
+      {"severity", severity_string(severity_)},
+      {"timestamp", ts_str},
+  };
+  gpr_free(description);
+  gpr_free(ts_str);
+  if (referenced_entity_ != nullptr) {
+    const bool is_channel =
+        (referenced_entity_->type() == BaseNode::EntityType::kTopLevelChannel ||
+         referenced_entity_->type() == BaseNode::EntityType::kInternalChannel);
+    object[is_channel ? "channelRef" : "subchannelRef"] = Json::Object{
+        {(is_channel ? "channelId" : "subchannelId"),
+         std::to_string(referenced_entity_->uuid())},
+    };
+  }
+  return object;
+}
+
+Json ChannelTrace::RenderJson() const {
+  // Tracing is disabled if max_event_memory_ == 0.
+  if (max_event_memory_ == 0) {
+    return Json();  // JSON null
+  }
+  char* ts_str = gpr_format_timespec(time_created_);
+  Json::Object object = {
+      {"creationTimestamp", ts_str},
+  };
+  gpr_free(ts_str);
+  if (num_events_logged_ > 0) {
+    object["numEventsLogged"] = std::to_string(num_events_logged_);
+  }
+  // Only add in the event list if it is non-empty.
+  if (head_trace_ != nullptr) {
+    Json::Array array;
+    for (TraceEvent* it = head_trace_; it != nullptr; it = it->next()) {
+      array.emplace_back(it->RenderTraceEvent());
+    }
+    object["events"] = std::move(array);
+  }
+  return object;
+}
+
+}  // namespace channelz
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.h
new file mode 100644
index 0000000..c26e301
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channel_trace.h	
@@ -0,0 +1,134 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+namespace grpc_core {
+namespace channelz {
+
+namespace testing {
+size_t GetSizeofTraceEvent(void);
+}
+
+class BaseNode;
+
+// Object used to hold live data for a channel. This data is exposed via the
+// channelz service:
+// https://github.com/grpc/proposal/blob/master/A14-channelz.md
+class ChannelTrace {
+ public:
+  ChannelTrace(size_t max_event_memory);
+  ~ChannelTrace();
+
+  enum Severity {
+    Unset = 0,  // never to be used
+    Info,       // we start at 1 to avoid using proto default values
+    Warning,
+    Error
+  };
+
+  // Adds a new trace event to the tracing object
+  //
+  // NOTE: each ChannelTrace tracks the memory used by its list of trace
+  // events, so adding an event with a large amount of data could cause other
+  // trace event to be evicted. If a single trace is larger than the limit, it
+  // will cause all events to be evicted. The limit is set with the arg:
+  // GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE.
+  //
+  // TODO(ncteisen): as this call is used more and more throughout the gRPC
+  // stack, determine if it makes more sense to accept a char* instead of a
+  // slice.
+  void AddTraceEvent(Severity severity, const grpc_slice& data);
+
+  // Adds a new trace event to the tracing object. This trace event refers to a
+  // an event that concerns a different channelz entity. For example, if this
+  // channel has created a new subchannel, then it would record that with
+  // a TraceEvent referencing the new subchannel.
+  //
+  // NOTE: see the note in the method above.
+  //
+  // TODO(ncteisen): see the todo in the method above.
+  void AddTraceEventWithReference(Severity severity, const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_entity);
+
+  // Creates and returns the raw Json object, so a parent channelz
+  // object may incorporate the json before rendering.
+  Json RenderJson() const;
+
+ private:
+  friend size_t testing::GetSizeofTraceEvent(void);
+
+  // Private class to encapsulate all the data and bookkeeping needed for a
+  // a trace event.
+  class TraceEvent {
+   public:
+    // Constructor for a TraceEvent that references a channel.
+    TraceEvent(Severity severity, const grpc_slice& data,
+               RefCountedPtr<BaseNode> referenced_entity_);
+
+    // Constructor for a TraceEvent that does not reverence a different
+    // channel.
+    TraceEvent(Severity severity, const grpc_slice& data);
+
+    ~TraceEvent();
+
+    // Renders the data inside of this TraceEvent into a json object. This is
+    // used by the ChannelTrace, when it is rendering itself.
+    Json RenderTraceEvent() const;
+
+    // set and get for the next_ pointer.
+    TraceEvent* next() const { return next_; }
+    void set_next(TraceEvent* next) { next_ = next; }
+
+    size_t memory_usage() const { return memory_usage_; }
+
+   private:
+    Severity severity_;
+    grpc_slice data_;
+    gpr_timespec timestamp_;
+    TraceEvent* next_;
+    // the tracer object for the (sub)channel that this trace event refers to.
+    RefCountedPtr<BaseNode> referenced_entity_;
+    size_t memory_usage_;
+  };  // TraceEvent
+
+  // Internal helper to add and link in a trace event
+  void AddTraceEventHelper(TraceEvent* new_trace_event);
+
+  gpr_mu tracer_mu_;
+  uint64_t num_events_logged_;
+  size_t event_list_memory_usage_;
+  size_t max_event_memory_;
+  TraceEvent* head_trace_;
+  TraceEvent* tail_trace_;
+  gpr_timespec time_created_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.cc
new file mode 100644
index 0000000..ff6b7a7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.cc	
@@ -0,0 +1,544 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include "src/core/lib/channel/channelz.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/channel/status_util.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/b64.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+namespace grpc_core {
+namespace channelz {
+
+//
+// channel arg code
+//
+
+namespace {
+
+void* parent_uuid_copy(void* p) { return p; }
+void parent_uuid_destroy(void* /*p*/) {}
+int parent_uuid_cmp(void* p1, void* p2) { return GPR_ICMP(p1, p2); }
+const grpc_arg_pointer_vtable parent_uuid_vtable = {
+    parent_uuid_copy, parent_uuid_destroy, parent_uuid_cmp};
+
+}  // namespace
+
+grpc_arg MakeParentUuidArg(intptr_t parent_uuid) {
+  // We would ideally like to store the uuid in an integer argument.
+  // Unfortunately, that won't work, because intptr_t (the type used for
+  // uuids) doesn't fit in an int (the type used for integer args).
+  // So instead, we use a hack to store it as a pointer, because
+  // intptr_t should be the same size as void*.
+  static_assert(sizeof(intptr_t) <= sizeof(void*),
+                "can't fit intptr_t inside of void*");
+  return grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_ARG_CHANNELZ_PARENT_UUID),
+      reinterpret_cast<void*>(parent_uuid), &parent_uuid_vtable);
+}
+
+intptr_t GetParentUuidFromArgs(const grpc_channel_args& args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(&args, GRPC_ARG_CHANNELZ_PARENT_UUID);
+  if (arg == nullptr || arg->type != GRPC_ARG_POINTER) return 0;
+  return reinterpret_cast<intptr_t>(arg->value.pointer.p);
+}
+
+//
+// BaseNode
+//
+
+BaseNode::BaseNode(EntityType type, std::string name)
+    : type_(type), uuid_(-1), name_(std::move(name)) {
+  // The registry will set uuid_ under its lock.
+  ChannelzRegistry::Register(this);
+}
+
+BaseNode::~BaseNode() { ChannelzRegistry::Unregister(uuid_); }
+
+std::string BaseNode::RenderJsonString() {
+  Json json = RenderJson();
+  return json.Dump();
+}
+
+//
+// CallCountingHelper
+//
+
+CallCountingHelper::CallCountingHelper() {
+  num_cores_ = GPR_MAX(1, gpr_cpu_num_cores());
+  per_cpu_counter_data_storage_.reserve(num_cores_);
+  for (size_t i = 0; i < num_cores_; ++i) {
+    per_cpu_counter_data_storage_.emplace_back();
+  }
+}
+
+void CallCountingHelper::RecordCallStarted() {
+  AtomicCounterData& data =
+      per_cpu_counter_data_storage_[ExecCtx::Get()->starting_cpu()];
+  data.calls_started.FetchAdd(1, MemoryOrder::RELAXED);
+  data.last_call_started_cycle.Store(gpr_get_cycle_counter(),
+                                     MemoryOrder::RELAXED);
+}
+
+void CallCountingHelper::RecordCallFailed() {
+  per_cpu_counter_data_storage_[ExecCtx::Get()->starting_cpu()]
+      .calls_failed.FetchAdd(1, MemoryOrder::RELAXED);
+}
+
+void CallCountingHelper::RecordCallSucceeded() {
+  per_cpu_counter_data_storage_[ExecCtx::Get()->starting_cpu()]
+      .calls_succeeded.FetchAdd(1, MemoryOrder::RELAXED);
+}
+
+void CallCountingHelper::CollectData(CounterData* out) {
+  for (size_t core = 0; core < num_cores_; ++core) {
+    AtomicCounterData& data = per_cpu_counter_data_storage_[core];
+
+    out->calls_started += data.calls_started.Load(MemoryOrder::RELAXED);
+    out->calls_succeeded +=
+        per_cpu_counter_data_storage_[core].calls_succeeded.Load(
+            MemoryOrder::RELAXED);
+    out->calls_failed += per_cpu_counter_data_storage_[core].calls_failed.Load(
+        MemoryOrder::RELAXED);
+    const gpr_cycle_counter last_call =
+        per_cpu_counter_data_storage_[core].last_call_started_cycle.Load(
+            MemoryOrder::RELAXED);
+    if (last_call > out->last_call_started_cycle) {
+      out->last_call_started_cycle = last_call;
+    }
+  }
+}
+
+void CallCountingHelper::PopulateCallCounts(Json::Object* object) {
+  CounterData data;
+  CollectData(&data);
+  if (data.calls_started != 0) {
+    (*object)["callsStarted"] = std::to_string(data.calls_started);
+    gpr_timespec ts = gpr_convert_clock_type(
+        gpr_cycle_counter_to_time(data.last_call_started_cycle),
+        GPR_CLOCK_REALTIME);
+    char* ts_str = gpr_format_timespec(ts);
+    (*object)["lastCallStartedTimestamp"] = ts_str;
+    gpr_free(ts_str);
+  }
+  if (data.calls_succeeded != 0) {
+    (*object)["callsSucceeded"] = std::to_string(data.calls_succeeded);
+  }
+  if (data.calls_failed) {
+    (*object)["callsFailed"] = std::to_string(data.calls_failed);
+  }
+}
+
+//
+// ChannelNode
+//
+
+ChannelNode::ChannelNode(std::string target, size_t channel_tracer_max_nodes,
+                         intptr_t parent_uuid)
+    : BaseNode(parent_uuid == 0 ? EntityType::kTopLevelChannel
+                                : EntityType::kInternalChannel,
+               target),
+      target_(std::move(target)),
+      trace_(channel_tracer_max_nodes),
+      parent_uuid_(parent_uuid) {}
+
+const char* ChannelNode::GetChannelConnectivityStateChangeString(
+    grpc_connectivity_state state) {
+  switch (state) {
+    case GRPC_CHANNEL_IDLE:
+      return "Channel state change to IDLE";
+    case GRPC_CHANNEL_CONNECTING:
+      return "Channel state change to CONNECTING";
+    case GRPC_CHANNEL_READY:
+      return "Channel state change to READY";
+    case GRPC_CHANNEL_TRANSIENT_FAILURE:
+      return "Channel state change to TRANSIENT_FAILURE";
+    case GRPC_CHANNEL_SHUTDOWN:
+      return "Channel state change to SHUTDOWN";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+Json ChannelNode::RenderJson() {
+  Json::Object data = {
+      {"target", target_},
+  };
+  // Connectivity state.
+  // If low-order bit is on, then the field is set.
+  int state_field = connectivity_state_.Load(MemoryOrder::RELAXED);
+  if ((state_field & 1) != 0) {
+    grpc_connectivity_state state =
+        static_cast<grpc_connectivity_state>(state_field >> 1);
+    data["state"] = Json::Object{
+        {"state", ConnectivityStateName(state)},
+    };
+  }
+  // Fill in the channel trace if applicable.
+  Json trace_json = trace_.RenderJson();
+  if (trace_json.type() != Json::Type::JSON_NULL) {
+    data["trace"] = std::move(trace_json);
+  }
+  // Ask CallCountingHelper to populate call count data.
+  call_counter_.PopulateCallCounts(&data);
+  // Construct outer object.
+  Json::Object json = {
+      {"ref",
+       Json::Object{
+           {"channelId", std::to_string(uuid())},
+       }},
+      {"data", std::move(data)},
+  };
+  // Template method. Child classes may override this to add their specific
+  // functionality.
+  PopulateChildRefs(&json);
+  return json;
+}
+
+void ChannelNode::PopulateChildRefs(Json::Object* json) {
+  MutexLock lock(&child_mu_);
+  if (!child_subchannels_.empty()) {
+    Json::Array array;
+    for (const auto& p : child_subchannels_) {
+      array.emplace_back(Json::Object{
+          {"subchannelId", std::to_string(p.first)},
+      });
+    }
+    (*json)["subchannelRef"] = std::move(array);
+  }
+  if (!child_channels_.empty()) {
+    Json::Array array;
+    for (const auto& p : child_channels_) {
+      array.emplace_back(Json::Object{
+          {"channelId", std::to_string(p.first)},
+      });
+    }
+    (*json)["channelRef"] = std::move(array);
+  }
+}
+
+void ChannelNode::SetConnectivityState(grpc_connectivity_state state) {
+  // Store with low-order bit set to indicate that the field is set.
+  int state_field = (state << 1) + 1;
+  connectivity_state_.Store(state_field, MemoryOrder::RELAXED);
+}
+
+void ChannelNode::AddChildChannel(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_channels_.insert(std::make_pair(child_uuid, true));
+}
+
+void ChannelNode::RemoveChildChannel(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_channels_.erase(child_uuid);
+}
+
+void ChannelNode::AddChildSubchannel(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_subchannels_.insert(std::make_pair(child_uuid, true));
+}
+
+void ChannelNode::RemoveChildSubchannel(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_subchannels_.erase(child_uuid);
+}
+
+//
+// ServerNode
+//
+
+ServerNode::ServerNode(grpc_server* /*server*/, size_t channel_tracer_max_nodes)
+    : BaseNode(EntityType::kServer, ""), trace_(channel_tracer_max_nodes) {}
+
+ServerNode::~ServerNode() {}
+
+void ServerNode::AddChildSocket(RefCountedPtr<SocketNode> node) {
+  MutexLock lock(&child_mu_);
+  child_sockets_.insert(std::make_pair(node->uuid(), std::move(node)));
+}
+
+void ServerNode::RemoveChildSocket(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_sockets_.erase(child_uuid);
+}
+
+void ServerNode::AddChildListenSocket(RefCountedPtr<ListenSocketNode> node) {
+  MutexLock lock(&child_mu_);
+  child_listen_sockets_.insert(std::make_pair(node->uuid(), std::move(node)));
+}
+
+void ServerNode::RemoveChildListenSocket(intptr_t child_uuid) {
+  MutexLock lock(&child_mu_);
+  child_listen_sockets_.erase(child_uuid);
+}
+
+std::string ServerNode::RenderServerSockets(intptr_t start_socket_id,
+                                            intptr_t max_results) {
+  // If user does not set max_results, we choose 500.
+  size_t pagination_limit = max_results == 0 ? 500 : max_results;
+  Json::Object object;
+  {
+    MutexLock lock(&child_mu_);
+    size_t sockets_rendered = 0;
+    if (!child_sockets_.empty()) {
+      // Create list of socket refs.
+      Json::Array array;
+      const size_t limit = GPR_MIN(child_sockets_.size(), pagination_limit);
+      for (auto it = child_sockets_.lower_bound(start_socket_id);
+           it != child_sockets_.end() && sockets_rendered < limit;
+           ++it, ++sockets_rendered) {
+        array.emplace_back(Json::Object{
+            {"socketId", std::to_string(it->first)},
+            {"name", it->second->name()},
+        });
+      }
+      object["socketRef"] = std::move(array);
+    }
+    if (sockets_rendered == child_sockets_.size()) object["end"] = true;
+  }
+  Json json = std::move(object);
+  return json.Dump();
+}
+
+Json ServerNode::RenderJson() {
+  Json::Object data;
+  // Fill in the channel trace if applicable.
+  Json trace_json = trace_.RenderJson();
+  if (trace_json.type() != Json::Type::JSON_NULL) {
+    data["trace"] = std::move(trace_json);
+  }
+  // Ask CallCountingHelper to populate call count data.
+  call_counter_.PopulateCallCounts(&data);
+  // Construct top-level object.
+  Json::Object object = {
+      {"ref",
+       Json::Object{
+           {"serverId", std::to_string(uuid())},
+       }},
+      {"data", std::move(data)},
+  };
+  // Render listen sockets.
+  {
+    MutexLock lock(&child_mu_);
+    if (!child_listen_sockets_.empty()) {
+      Json::Array array;
+      for (const auto& it : child_listen_sockets_) {
+        array.emplace_back(Json::Object{
+            {"socketId", std::to_string(it.first)},
+            {"name", it.second->name()},
+        });
+      }
+      object["listenSocket"] = std::move(array);
+    }
+  }
+  return object;
+}
+
+//
+// SocketNode
+//
+
+namespace {
+
+void PopulateSocketAddressJson(Json::Object* json, const char* name,
+                               const char* addr_str) {
+  if (addr_str == nullptr) return;
+  Json::Object data;
+  grpc_uri* uri = grpc_uri_parse(addr_str, true);
+  if ((uri != nullptr) && ((strcmp(uri->scheme, "ipv4") == 0) ||
+                           (strcmp(uri->scheme, "ipv6") == 0))) {
+    const char* host_port = uri->path;
+    if (*host_port == '/') ++host_port;
+    grpc_core::UniquePtr<char> host;
+    grpc_core::UniquePtr<char> port;
+    GPR_ASSERT(SplitHostPort(host_port, &host, &port));
+    int port_num = -1;
+    if (port != nullptr) {
+      port_num = atoi(port.get());
+    }
+    char* b64_host =
+        grpc_base64_encode(host.get(), strlen(host.get()), false, false);
+    data["tcpip_address"] = Json::Object{
+        {"port", port_num},
+        {"ip_address", b64_host},
+    };
+    gpr_free(b64_host);
+  } else if (uri != nullptr && strcmp(uri->scheme, "unix") == 0) {
+    data["uds_address"] = Json::Object{
+        {"filename", uri->path},
+    };
+  } else {
+    data["other_address"] = Json::Object{
+        {"name", addr_str},
+    };
+  }
+  grpc_uri_destroy(uri);
+  (*json)[name] = std::move(data);
+}
+
+}  // namespace
+
+SocketNode::SocketNode(std::string local, std::string remote, std::string name)
+    : BaseNode(EntityType::kSocket, std::move(name)),
+      local_(std::move(local)),
+      remote_(std::move(remote)) {}
+
+void SocketNode::RecordStreamStartedFromLocal() {
+  streams_started_.FetchAdd(1, MemoryOrder::RELAXED);
+  last_local_stream_created_cycle_.Store(gpr_get_cycle_counter(),
+                                         MemoryOrder::RELAXED);
+}
+
+void SocketNode::RecordStreamStartedFromRemote() {
+  streams_started_.FetchAdd(1, MemoryOrder::RELAXED);
+  last_remote_stream_created_cycle_.Store(gpr_get_cycle_counter(),
+                                          MemoryOrder::RELAXED);
+}
+
+void SocketNode::RecordMessagesSent(uint32_t num_sent) {
+  messages_sent_.FetchAdd(num_sent, MemoryOrder::RELAXED);
+  last_message_sent_cycle_.Store(gpr_get_cycle_counter(), MemoryOrder::RELAXED);
+}
+
+void SocketNode::RecordMessageReceived() {
+  messages_received_.FetchAdd(1, MemoryOrder::RELAXED);
+  last_message_received_cycle_.Store(gpr_get_cycle_counter(),
+                                     MemoryOrder::RELAXED);
+}
+
+Json SocketNode::RenderJson() {
+  // Create and fill the data child.
+  Json::Object data;
+  gpr_timespec ts;
+  int64_t streams_started = streams_started_.Load(MemoryOrder::RELAXED);
+  if (streams_started != 0) {
+    data["streamsStarted"] = std::to_string(streams_started);
+    gpr_cycle_counter last_local_stream_created_cycle =
+        last_local_stream_created_cycle_.Load(MemoryOrder::RELAXED);
+    if (last_local_stream_created_cycle != 0) {
+      ts = gpr_convert_clock_type(
+          gpr_cycle_counter_to_time(last_local_stream_created_cycle),
+          GPR_CLOCK_REALTIME);
+      char* ts_str = gpr_format_timespec(ts);
+      data["lastLocalStreamCreatedTimestamp"] = ts_str;
+      gpr_free(ts_str);
+    }
+    gpr_cycle_counter last_remote_stream_created_cycle =
+        last_remote_stream_created_cycle_.Load(MemoryOrder::RELAXED);
+    if (last_remote_stream_created_cycle != 0) {
+      ts = gpr_convert_clock_type(
+          gpr_cycle_counter_to_time(last_remote_stream_created_cycle),
+          GPR_CLOCK_REALTIME);
+      char* ts_str = gpr_format_timespec(ts);
+      data["lastRemoteStreamCreatedTimestamp"] = ts_str;
+      gpr_free(ts_str);
+    }
+  }
+  int64_t streams_succeeded = streams_succeeded_.Load(MemoryOrder::RELAXED);
+  if (streams_succeeded != 0) {
+    data["streamsSucceeded"] = std::to_string(streams_succeeded);
+  }
+  int64_t streams_failed = streams_failed_.Load(MemoryOrder::RELAXED);
+  if (streams_failed != 0) {
+    data["streamsFailed"] = std::to_string(streams_failed);
+  }
+  int64_t messages_sent = messages_sent_.Load(MemoryOrder::RELAXED);
+  if (messages_sent != 0) {
+    data["messagesSent"] = std::to_string(messages_sent);
+    ts = gpr_convert_clock_type(
+        gpr_cycle_counter_to_time(
+            last_message_sent_cycle_.Load(MemoryOrder::RELAXED)),
+        GPR_CLOCK_REALTIME);
+    char* ts_str = gpr_format_timespec(ts);
+    data["lastMessageSentTimestamp"] = ts_str;
+    gpr_free(ts_str);
+  }
+  int64_t messages_received = messages_received_.Load(MemoryOrder::RELAXED);
+  if (messages_received != 0) {
+    data["messagesReceived"] = std::to_string(messages_received);
+    ts = gpr_convert_clock_type(
+        gpr_cycle_counter_to_time(
+            last_message_received_cycle_.Load(MemoryOrder::RELAXED)),
+        GPR_CLOCK_REALTIME);
+    char* ts_str = gpr_format_timespec(ts);
+    data["lastMessageReceivedTimestamp"] = ts_str;
+    gpr_free(ts_str);
+  }
+  int64_t keepalives_sent = keepalives_sent_.Load(MemoryOrder::RELAXED);
+  if (keepalives_sent != 0) {
+    data["keepAlivesSent"] = std::to_string(keepalives_sent);
+  }
+  // Create and fill the parent object.
+  Json::Object object = {
+      {"ref",
+       Json::Object{
+           {"socketId", std::to_string(uuid())},
+           {"name", name()},
+       }},
+      {"data", std::move(data)},
+  };
+  PopulateSocketAddressJson(&object, "remote", remote_.c_str());
+  PopulateSocketAddressJson(&object, "local", local_.c_str());
+  return object;
+}
+
+//
+// ListenSocketNode
+//
+
+ListenSocketNode::ListenSocketNode(std::string local_addr, std::string name)
+    : BaseNode(EntityType::kSocket, std::move(name)),
+      local_addr_(std::move(local_addr)) {}
+
+Json ListenSocketNode::RenderJson() {
+  Json::Object object = {
+      {"ref",
+       Json::Object{
+           {"socketId", std::to_string(uuid())},
+           {"name", name()},
+       }},
+  };
+  PopulateSocketAddressJson(&object, "local", local_addr_.c_str());
+  return object;
+}
+
+}  // namespace channelz
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.h
new file mode 100644
index 0000000..73a9b57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz.h	
@@ -0,0 +1,333 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNELZ_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNELZ_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/json/json.h"
+
+// Channel arg key for channelz node.
+#define GRPC_ARG_CHANNELZ_CHANNEL_NODE "grpc.channelz_channel_node"
+
+// Channel arg key to encode the channelz uuid of the channel's parent.
+#define GRPC_ARG_CHANNELZ_PARENT_UUID "grpc.channelz_parent_uuid"
+
+/** This is the default value for whether or not to enable channelz. If
+ * GRPC_ARG_ENABLE_CHANNELZ is set, it will override this default value. */
+#define GRPC_ENABLE_CHANNELZ_DEFAULT true
+
+/** This is the default value for the maximum amount of memory used by trace
+ * events per channel trace node. If
+ * GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE is set, it will override
+ * this default value. */
+#define GRPC_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE_DEFAULT 1024 * 4
+
+namespace grpc_core {
+
+namespace channelz {
+
+// Helpers for getting and setting GRPC_ARG_CHANNELZ_PARENT_UUID.
+grpc_arg MakeParentUuidArg(intptr_t parent_uuid);
+intptr_t GetParentUuidFromArgs(const grpc_channel_args& args);
+
+class SocketNode;
+class ListenSocketNode;
+
+namespace testing {
+class CallCountingHelperPeer;
+class ChannelNodePeer;
+}  // namespace testing
+
+// base class for all channelz entities
+class BaseNode : public RefCounted<BaseNode> {
+ public:
+  // There are only four high level channelz entities. However, to support
+  // GetTopChannelsRequest, we split the Channel entity into two different
+  // types. All children of BaseNode must be one of these types.
+  enum class EntityType {
+    kTopLevelChannel,
+    kInternalChannel,
+    kSubchannel,
+    kServer,
+    kSocket,
+  };
+
+ protected:
+  BaseNode(EntityType type, std::string name);
+
+ public:
+  virtual ~BaseNode();
+
+  // All children must implement this function.
+  virtual Json RenderJson() = 0;
+
+  // Renders the json and returns allocated string that must be freed by the
+  // caller.
+  std::string RenderJsonString();
+
+  EntityType type() const { return type_; }
+  intptr_t uuid() const { return uuid_; }
+  const std::string& name() const { return name_; }
+
+ private:
+  // to allow the ChannelzRegistry to set uuid_ under its lock.
+  friend class ChannelzRegistry;
+  const EntityType type_;
+  intptr_t uuid_;
+  std::string name_;
+};
+
+// This class is a helper class for channelz entities that deal with Channels,
+// Subchannels, and Servers, since those have similar proto definitions.
+// This class has the ability to:
+//   - track calls_{started,succeeded,failed}
+//   - track last_call_started_timestamp
+//   - perform rendering of the above items
+class CallCountingHelper {
+ public:
+  CallCountingHelper();
+
+  void RecordCallStarted();
+  void RecordCallFailed();
+  void RecordCallSucceeded();
+
+  // Common rendering of the call count data and last_call_started_timestamp.
+  void PopulateCallCounts(Json::Object* json);
+
+ private:
+  // testing peer friend.
+  friend class testing::CallCountingHelperPeer;
+
+  // TODO(soheil): add a proper PerCPU helper and use it here.
+  struct AtomicCounterData {
+    // Define the ctors so that we can use this structure in InlinedVector.
+    AtomicCounterData() = default;
+    AtomicCounterData(const AtomicCounterData& that)
+        : calls_started(that.calls_started.Load(MemoryOrder::RELAXED)),
+          calls_succeeded(that.calls_succeeded.Load(MemoryOrder::RELAXED)),
+          calls_failed(that.calls_failed.Load(MemoryOrder::RELAXED)),
+          last_call_started_cycle(
+              that.last_call_started_cycle.Load(MemoryOrder::RELAXED)) {}
+
+    Atomic<int64_t> calls_started{0};
+    Atomic<int64_t> calls_succeeded{0};
+    Atomic<int64_t> calls_failed{0};
+    Atomic<gpr_cycle_counter> last_call_started_cycle{0};
+    // Make sure the size is exactly one cache line.
+    uint8_t padding[GPR_CACHELINE_SIZE - 3 * sizeof(Atomic<intptr_t>) -
+                    sizeof(Atomic<gpr_cycle_counter>)];
+  };
+  // TODO(soheilhy,veblush): Revist this after abseil integration.
+  // This has a problem when using abseil inlined_vector because it
+  // carries an alignment attribute properly but our allocator doesn't
+  // respect this. To avoid UBSAN errors, this should be removed with
+  // abseil inlined_vector.
+  // GPR_ALIGN_STRUCT(GPR_CACHELINE_SIZE);
+
+  struct CounterData {
+    int64_t calls_started = 0;
+    int64_t calls_succeeded = 0;
+    int64_t calls_failed = 0;
+    gpr_cycle_counter last_call_started_cycle = 0;
+  };
+
+  // collects the sharded data into one CounterData struct.
+  void CollectData(CounterData* out);
+
+  // Really zero-sized, but 0-sized arrays are illegal on MSVC.
+  InlinedVector<AtomicCounterData, 1> per_cpu_counter_data_storage_;
+  size_t num_cores_ = 0;
+};
+
+// Handles channelz bookkeeping for channels
+class ChannelNode : public BaseNode {
+ public:
+  ChannelNode(std::string target, size_t channel_tracer_max_nodes,
+              intptr_t parent_uuid);
+
+  // Returns the string description of the given connectivity state.
+  static const char* GetChannelConnectivityStateChangeString(
+      grpc_connectivity_state state);
+
+  intptr_t parent_uuid() const { return parent_uuid_; }
+
+  Json RenderJson() override;
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+  void SetConnectivityState(grpc_connectivity_state state);
+
+  // TODO(roth): take in a RefCountedPtr to the child channel so we can retrieve
+  // the human-readable name.
+  void AddChildChannel(intptr_t child_uuid);
+  void RemoveChildChannel(intptr_t child_uuid);
+
+  // TODO(roth): take in a RefCountedPtr to the child subchannel so we can
+  // retrieve the human-readable name.
+  void AddChildSubchannel(intptr_t child_uuid);
+  void RemoveChildSubchannel(intptr_t child_uuid);
+
+ private:
+  void PopulateChildRefs(Json::Object* json);
+
+  // to allow the channel trace test to access trace_.
+  friend class testing::ChannelNodePeer;
+
+  std::string target_;
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+  const intptr_t parent_uuid_;
+
+  // Least significant bit indicates whether the value is set.  Remaining
+  // bits are a grpc_connectivity_state value.
+  Atomic<int> connectivity_state_{0};
+
+  Mutex child_mu_;  // Guards child maps below.
+  // TODO(roth): We don't actually use the values here, only the keys, so
+  // these should be sets instead of maps, but we don't currently have a set
+  // implementation.  Change this if/when we have one.
+  std::map<intptr_t, bool> child_channels_;
+  std::map<intptr_t, bool> child_subchannels_;
+};
+
+// Handles channelz bookkeeping for servers
+class ServerNode : public BaseNode {
+ public:
+  ServerNode(grpc_server* server, size_t channel_tracer_max_nodes);
+
+  ~ServerNode() override;
+
+  Json RenderJson() override;
+
+  std::string RenderServerSockets(intptr_t start_socket_id,
+                                  intptr_t max_results);
+
+  void AddChildSocket(RefCountedPtr<SocketNode> node);
+
+  void RemoveChildSocket(intptr_t child_uuid);
+
+  void AddChildListenSocket(RefCountedPtr<ListenSocketNode> node);
+
+  void RemoveChildListenSocket(intptr_t child_uuid);
+
+  // proxy methods to composed classes.
+  void AddTraceEvent(ChannelTrace::Severity severity, const grpc_slice& data) {
+    trace_.AddTraceEvent(severity, data);
+  }
+  void AddTraceEventWithReference(ChannelTrace::Severity severity,
+                                  const grpc_slice& data,
+                                  RefCountedPtr<BaseNode> referenced_channel) {
+    trace_.AddTraceEventWithReference(severity, data,
+                                      std::move(referenced_channel));
+  }
+  void RecordCallStarted() { call_counter_.RecordCallStarted(); }
+  void RecordCallFailed() { call_counter_.RecordCallFailed(); }
+  void RecordCallSucceeded() { call_counter_.RecordCallSucceeded(); }
+
+ private:
+  CallCountingHelper call_counter_;
+  ChannelTrace trace_;
+  Mutex child_mu_;  // Guards child maps below.
+  std::map<intptr_t, RefCountedPtr<SocketNode>> child_sockets_;
+  std::map<intptr_t, RefCountedPtr<ListenSocketNode>> child_listen_sockets_;
+};
+
+// Handles channelz bookkeeping for sockets
+class SocketNode : public BaseNode {
+ public:
+  SocketNode(std::string local, std::string remote, std::string name);
+  ~SocketNode() override {}
+
+  Json RenderJson() override;
+
+  void RecordStreamStartedFromLocal();
+  void RecordStreamStartedFromRemote();
+  void RecordStreamSucceeded() {
+    streams_succeeded_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  void RecordStreamFailed() {
+    streams_failed_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  void RecordMessagesSent(uint32_t num_sent);
+  void RecordMessageReceived();
+  void RecordKeepaliveSent() {
+    keepalives_sent_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+
+  const std::string& remote() { return remote_; }
+
+ private:
+  Atomic<int64_t> streams_started_{0};
+  Atomic<int64_t> streams_succeeded_{0};
+  Atomic<int64_t> streams_failed_{0};
+  Atomic<int64_t> messages_sent_{0};
+  Atomic<int64_t> messages_received_{0};
+  Atomic<int64_t> keepalives_sent_{0};
+  Atomic<gpr_cycle_counter> last_local_stream_created_cycle_{0};
+  Atomic<gpr_cycle_counter> last_remote_stream_created_cycle_{0};
+  Atomic<gpr_cycle_counter> last_message_sent_cycle_{0};
+  Atomic<gpr_cycle_counter> last_message_received_cycle_{0};
+  std::string local_;
+  std::string remote_;
+};
+
+// Handles channelz bookkeeping for listen sockets
+class ListenSocketNode : public BaseNode {
+ public:
+  ListenSocketNode(std::string local_addr, std::string name);
+  ~ListenSocketNode() override {}
+
+  Json RenderJson() override;
+
+ private:
+  std::string local_addr_;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNELZ_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.cc
new file mode 100644
index 0000000..0964ffc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.cc	
@@ -0,0 +1,265 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <algorithm>
+#include <cstring>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/sync.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+namespace grpc_core {
+namespace channelz {
+namespace {
+
+// singleton instance of the registry.
+ChannelzRegistry* g_channelz_registry = nullptr;
+
+const int kPaginationLimit = 100;
+
+}  // anonymous namespace
+
+void ChannelzRegistry::Init() { g_channelz_registry = new ChannelzRegistry(); }
+
+void ChannelzRegistry::Shutdown() { delete g_channelz_registry; }
+
+ChannelzRegistry* ChannelzRegistry::Default() {
+  GPR_DEBUG_ASSERT(g_channelz_registry != nullptr);
+  return g_channelz_registry;
+}
+
+void ChannelzRegistry::InternalRegister(BaseNode* node) {
+  MutexLock lock(&mu_);
+  node->uuid_ = ++uuid_generator_;
+  node_map_[node->uuid_] = node;
+}
+
+void ChannelzRegistry::InternalUnregister(intptr_t uuid) {
+  GPR_ASSERT(uuid >= 1);
+  MutexLock lock(&mu_);
+  GPR_ASSERT(uuid <= uuid_generator_);
+  node_map_.erase(uuid);
+}
+
+RefCountedPtr<BaseNode> ChannelzRegistry::InternalGet(intptr_t uuid) {
+  MutexLock lock(&mu_);
+  if (uuid < 1 || uuid > uuid_generator_) {
+    return nullptr;
+  }
+  auto it = node_map_.find(uuid);
+  if (it == node_map_.end()) return nullptr;
+  // Found node.  Return only if its refcount is not zero (i.e., when we
+  // know that there is no other thread about to destroy it).
+  BaseNode* node = it->second;
+  if (!node->RefIfNonZero()) return nullptr;
+  return RefCountedPtr<BaseNode>(node);
+}
+
+std::string ChannelzRegistry::InternalGetTopChannels(
+    intptr_t start_channel_id) {
+  InlinedVector<RefCountedPtr<BaseNode>, 10> top_level_channels;
+  RefCountedPtr<BaseNode> node_after_pagination_limit;
+  {
+    MutexLock lock(&mu_);
+    for (auto it = node_map_.lower_bound(start_channel_id);
+         it != node_map_.end(); ++it) {
+      BaseNode* node = it->second;
+      if (node->type() == BaseNode::EntityType::kTopLevelChannel &&
+          node->RefIfNonZero()) {
+        // Check if we are over pagination limit to determine if we need to set
+        // the "end" element. If we don't go through this block, we know that
+        // when the loop terminates, we have <= to kPaginationLimit.
+        // Note that because we have already increased this node's
+        // refcount, we need to decrease it, but we can't unref while
+        // holding the lock, because this may lead to a deadlock.
+        if (top_level_channels.size() == kPaginationLimit) {
+          node_after_pagination_limit.reset(node);
+          break;
+        }
+        top_level_channels.emplace_back(node);
+      }
+    }
+  }
+  Json::Object object;
+  if (!top_level_channels.empty()) {
+    // Create list of channels.
+    Json::Array array;
+    for (size_t i = 0; i < top_level_channels.size(); ++i) {
+      array.emplace_back(top_level_channels[i]->RenderJson());
+    }
+    object["channel"] = std::move(array);
+  }
+  if (node_after_pagination_limit == nullptr) object["end"] = true;
+  Json json(std::move(object));
+  return json.Dump();
+}
+
+std::string ChannelzRegistry::InternalGetServers(intptr_t start_server_id) {
+  InlinedVector<RefCountedPtr<BaseNode>, 10> servers;
+  RefCountedPtr<BaseNode> node_after_pagination_limit;
+  {
+    MutexLock lock(&mu_);
+    for (auto it = node_map_.lower_bound(start_server_id);
+         it != node_map_.end(); ++it) {
+      BaseNode* node = it->second;
+      if (node->type() == BaseNode::EntityType::kServer &&
+          node->RefIfNonZero()) {
+        // Check if we are over pagination limit to determine if we need to set
+        // the "end" element. If we don't go through this block, we know that
+        // when the loop terminates, we have <= to kPaginationLimit.
+        // Note that because we have already increased this node's
+        // refcount, we need to decrease it, but we can't unref while
+        // holding the lock, because this may lead to a deadlock.
+        if (servers.size() == kPaginationLimit) {
+          node_after_pagination_limit.reset(node);
+          break;
+        }
+        servers.emplace_back(node);
+      }
+    }
+  }
+  Json::Object object;
+  if (!servers.empty()) {
+    // Create list of servers.
+    Json::Array array;
+    for (size_t i = 0; i < servers.size(); ++i) {
+      array.emplace_back(servers[i]->RenderJson());
+    }
+    object["server"] = std::move(array);
+  }
+  if (node_after_pagination_limit == nullptr) object["end"] = true;
+  Json json(std::move(object));
+  return json.Dump();
+}
+
+void ChannelzRegistry::InternalLogAllEntities() {
+  InlinedVector<RefCountedPtr<BaseNode>, 10> nodes;
+  {
+    MutexLock lock(&mu_);
+    for (auto& p : node_map_) {
+      BaseNode* node = p.second;
+      if (node->RefIfNonZero()) {
+        nodes.emplace_back(node);
+      }
+    }
+  }
+  for (size_t i = 0; i < nodes.size(); ++i) {
+    std::string json = nodes[i]->RenderJsonString();
+    gpr_log(GPR_INFO, "%s", json.c_str());
+  }
+}
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+char* grpc_channelz_get_top_channels(intptr_t start_channel_id) {
+  return gpr_strdup(
+      grpc_core::channelz::ChannelzRegistry::GetTopChannels(start_channel_id)
+          .c_str());
+}
+
+char* grpc_channelz_get_servers(intptr_t start_server_id) {
+  return gpr_strdup(
+      grpc_core::channelz::ChannelzRegistry::GetServers(start_server_id)
+          .c_str());
+}
+
+char* grpc_channelz_get_server(intptr_t server_id) {
+  grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> server_node =
+      grpc_core::channelz::ChannelzRegistry::Get(server_id);
+  if (server_node == nullptr ||
+      server_node->type() !=
+          grpc_core::channelz::BaseNode::EntityType::kServer) {
+    return nullptr;
+  }
+  grpc_core::Json json = grpc_core::Json::Object{
+      {"server", server_node->RenderJson()},
+  };
+  return gpr_strdup(json.Dump().c_str());
+}
+
+char* grpc_channelz_get_server_sockets(intptr_t server_id,
+                                       intptr_t start_socket_id,
+                                       intptr_t max_results) {
+  grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> base_node =
+      grpc_core::channelz::ChannelzRegistry::Get(server_id);
+  if (base_node == nullptr ||
+      base_node->type() != grpc_core::channelz::BaseNode::EntityType::kServer) {
+    return nullptr;
+  }
+  // This cast is ok since we have just checked to make sure base_node is
+  // actually a server node.
+  grpc_core::channelz::ServerNode* server_node =
+      static_cast<grpc_core::channelz::ServerNode*>(base_node.get());
+  return gpr_strdup(
+      server_node->RenderServerSockets(start_socket_id, max_results).c_str());
+}
+
+char* grpc_channelz_get_channel(intptr_t channel_id) {
+  grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> channel_node =
+      grpc_core::channelz::ChannelzRegistry::Get(channel_id);
+  if (channel_node == nullptr ||
+      (channel_node->type() !=
+           grpc_core::channelz::BaseNode::EntityType::kTopLevelChannel &&
+       channel_node->type() !=
+           grpc_core::channelz::BaseNode::EntityType::kInternalChannel)) {
+    return nullptr;
+  }
+  grpc_core::Json json = grpc_core::Json::Object{
+      {"channel", channel_node->RenderJson()},
+  };
+  return gpr_strdup(json.Dump().c_str());
+}
+
+char* grpc_channelz_get_subchannel(intptr_t subchannel_id) {
+  grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> subchannel_node =
+      grpc_core::channelz::ChannelzRegistry::Get(subchannel_id);
+  if (subchannel_node == nullptr ||
+      subchannel_node->type() !=
+          grpc_core::channelz::BaseNode::EntityType::kSubchannel) {
+    return nullptr;
+  }
+  grpc_core::Json json = grpc_core::Json::Object{
+      {"subchannel", subchannel_node->RenderJson()},
+  };
+  return gpr_strdup(json.Dump().c_str());
+}
+
+char* grpc_channelz_get_socket(intptr_t socket_id) {
+  grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> socket_node =
+      grpc_core::channelz::ChannelzRegistry::Get(socket_id);
+  if (socket_node == nullptr ||
+      socket_node->type() !=
+          grpc_core::channelz::BaseNode::EntityType::kSocket) {
+    return nullptr;
+  }
+  grpc_core::Json json = grpc_core::Json::Object{
+      {"socket", socket_node->RenderJson()},
+  };
+  return gpr_strdup(json.Dump().c_str());
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.h
new file mode 100644
index 0000000..d777651
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/channelz_registry.h	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stdint.h>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+namespace channelz {
+
+// singleton registry object to track all objects that are needed to support
+// channelz bookkeeping. All objects share globally distributed uuids.
+class ChannelzRegistry {
+ public:
+  // To be called in grpc_init()
+  static void Init();
+
+  // To be called in grpc_shutdown();
+  static void Shutdown();
+
+  static void Register(BaseNode* node) {
+    return Default()->InternalRegister(node);
+  }
+  static void Unregister(intptr_t uuid) { Default()->InternalUnregister(uuid); }
+  static RefCountedPtr<BaseNode> Get(intptr_t uuid) {
+    return Default()->InternalGet(uuid);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetTopChannelsResponse as per channelz.proto.
+  static std::string GetTopChannels(intptr_t start_channel_id) {
+    return Default()->InternalGetTopChannels(start_channel_id);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetServersResponse as per channelz.proto.
+  static std::string GetServers(intptr_t start_server_id) {
+    return Default()->InternalGetServers(start_server_id);
+  }
+
+  // Test only helper function to dump the JSON representation to std out.
+  // This can aid in debugging channelz code.
+  static void LogAllEntities() { Default()->InternalLogAllEntities(); }
+
+ private:
+  // Returned the singleton instance of ChannelzRegistry;
+  static ChannelzRegistry* Default();
+
+  // globally registers an Entry. Returns its unique uuid
+  void InternalRegister(BaseNode* node);
+
+  // globally unregisters the object that is associated to uuid. Also does
+  // sanity check that an object doesn't try to unregister the wrong type.
+  void InternalUnregister(intptr_t uuid);
+
+  // if object with uuid has previously been registered as the correct type,
+  // returns the void* associated with that uuid. Else returns nullptr.
+  RefCountedPtr<BaseNode> InternalGet(intptr_t uuid);
+
+  std::string InternalGetTopChannels(intptr_t start_channel_id);
+  std::string InternalGetServers(intptr_t start_server_id);
+
+  void InternalLogAllEntities();
+
+  // protects members
+  Mutex mu_;
+  std::map<intptr_t, BaseNode*> node_map_;
+  intptr_t uuid_generator_ = 0;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.cc
new file mode 100644
index 0000000..23ff63b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.cc	
@@ -0,0 +1,244 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/connected_channel.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/transport/transport.h"
+
+#define MAX_BUFFER_LENGTH 8192
+
+typedef struct connected_channel_channel_data {
+  grpc_transport* transport;
+} channel_data;
+
+typedef struct {
+  grpc_closure closure;
+  grpc_closure* original_closure;
+  grpc_core::CallCombiner* call_combiner;
+  const char* reason;
+} callback_state;
+
+typedef struct connected_channel_call_data {
+  grpc_core::CallCombiner* call_combiner;
+  // Closures used for returning results on the call combiner.
+  callback_state on_complete[6];  // Max number of pending batches.
+  callback_state recv_initial_metadata_ready;
+  callback_state recv_message_ready;
+  callback_state recv_trailing_metadata_ready;
+} call_data;
+
+static void run_in_call_combiner(void* arg, grpc_error* error) {
+  callback_state* state = static_cast<callback_state*>(arg);
+  GRPC_CALL_COMBINER_START(state->call_combiner, state->original_closure,
+                           GRPC_ERROR_REF(error), state->reason);
+}
+
+static void run_cancel_in_call_combiner(void* arg, grpc_error* error) {
+  run_in_call_combiner(arg, error);
+  gpr_free(arg);
+}
+
+static void intercept_callback(call_data* calld, callback_state* state,
+                               bool free_when_done, const char* reason,
+                               grpc_closure** original_closure) {
+  state->original_closure = *original_closure;
+  state->call_combiner = calld->call_combiner;
+  state->reason = reason;
+  *original_closure = GRPC_CLOSURE_INIT(
+      &state->closure,
+      free_when_done ? run_cancel_in_call_combiner : run_in_call_combiner,
+      state, grpc_schedule_on_exec_ctx);
+}
+
+static callback_state* get_state_for_batch(
+    call_data* calld, grpc_transport_stream_op_batch* batch) {
+  if (batch->send_initial_metadata) return &calld->on_complete[0];
+  if (batch->send_message) return &calld->on_complete[1];
+  if (batch->send_trailing_metadata) return &calld->on_complete[2];
+  if (batch->recv_initial_metadata) return &calld->on_complete[3];
+  if (batch->recv_message) return &calld->on_complete[4];
+  if (batch->recv_trailing_metadata) return &calld->on_complete[5];
+  GPR_UNREACHABLE_CODE(return nullptr);
+}
+
+/* We perform a small hack to locate transport data alongside the connected
+   channel data in call allocations, to allow everything to be pulled in minimal
+   cache line requests */
+#define TRANSPORT_STREAM_FROM_CALL_DATA(calld) ((grpc_stream*)((calld) + 1))
+#define CALL_DATA_FROM_TRANSPORT_STREAM(transport_stream) \
+  (((call_data*)(transport_stream)) - 1)
+
+/* Intercept a call operation and either push it directly up or translate it
+   into transport stream operations */
+static void connected_channel_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  if (batch->recv_initial_metadata) {
+    callback_state* state = &calld->recv_initial_metadata_ready;
+    intercept_callback(
+        calld, state, false, "recv_initial_metadata_ready",
+        &batch->payload->recv_initial_metadata.recv_initial_metadata_ready);
+  }
+  if (batch->recv_message) {
+    callback_state* state = &calld->recv_message_ready;
+    intercept_callback(calld, state, false, "recv_message_ready",
+                       &batch->payload->recv_message.recv_message_ready);
+  }
+  if (batch->recv_trailing_metadata) {
+    callback_state* state = &calld->recv_trailing_metadata_ready;
+    intercept_callback(
+        calld, state, false, "recv_trailing_metadata_ready",
+        &batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready);
+  }
+  if (batch->cancel_stream) {
+    // There can be more than one cancellation batch in flight at any
+    // given time, so we can't just pick out a fixed index into
+    // calld->on_complete like we can for the other ops.  However,
+    // cancellation isn't in the fast path, so we just allocate a new
+    // closure for each one.
+    callback_state* state =
+        static_cast<callback_state*>(gpr_malloc(sizeof(*state)));
+    intercept_callback(calld, state, true, "on_complete (cancel_stream)",
+                       &batch->on_complete);
+  } else if (batch->on_complete != nullptr) {
+    callback_state* state = get_state_for_batch(calld, batch);
+    intercept_callback(calld, state, false, "on_complete", &batch->on_complete);
+  }
+  grpc_transport_perform_stream_op(
+      chand->transport, TRANSPORT_STREAM_FROM_CALL_DATA(calld), batch);
+  GRPC_CALL_COMBINER_STOP(calld->call_combiner, "passed batch to transport");
+}
+
+static void connected_channel_start_transport_op(grpc_channel_element* elem,
+                                                 grpc_transport_op* op) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  grpc_transport_perform_op(chand->transport, op);
+}
+
+/* Constructor for call_data */
+static grpc_error* connected_channel_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  calld->call_combiner = args->call_combiner;
+  int r = grpc_transport_init_stream(
+      chand->transport, TRANSPORT_STREAM_FROM_CALL_DATA(calld),
+      &args->call_stack->refcount, args->server_transport_data, args->arena);
+  return r == 0 ? GRPC_ERROR_NONE
+                : GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                      "transport stream initialization failed");
+}
+
+static void set_pollset_or_pollset_set(grpc_call_element* elem,
+                                       grpc_polling_entity* pollent) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  grpc_transport_set_pops(chand->transport,
+                          TRANSPORT_STREAM_FROM_CALL_DATA(calld), pollent);
+}
+
+/* Destructor for call_data */
+static void connected_channel_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* then_schedule_closure) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  grpc_transport_destroy_stream(chand->transport,
+                                TRANSPORT_STREAM_FROM_CALL_DATA(calld),
+                                then_schedule_closure);
+}
+
+/* Constructor for channel_data */
+static grpc_error* connected_channel_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  channel_data* cd = static_cast<channel_data*>(elem->channel_data);
+  GPR_ASSERT(args->is_last);
+  cd->transport = nullptr;
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel_data */
+static void connected_channel_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* cd = static_cast<channel_data*>(elem->channel_data);
+  if (cd->transport) {
+    grpc_transport_destroy(cd->transport);
+  }
+}
+
+/* No-op. */
+static void connected_channel_get_channel_info(
+    grpc_channel_element* /*elem*/, const grpc_channel_info* /*channel_info*/) {
+}
+
+const grpc_channel_filter grpc_connected_filter = {
+    connected_channel_start_transport_stream_op_batch,
+    connected_channel_start_transport_op,
+    sizeof(call_data),
+    connected_channel_init_call_elem,
+    set_pollset_or_pollset_set,
+    connected_channel_destroy_call_elem,
+    sizeof(channel_data),
+    connected_channel_init_channel_elem,
+    connected_channel_destroy_channel_elem,
+    connected_channel_get_channel_info,
+    "connected",
+};
+
+static void bind_transport(grpc_channel_stack* channel_stack,
+                           grpc_channel_element* elem, void* t) {
+  channel_data* cd = static_cast<channel_data*>(elem->channel_data);
+  GPR_ASSERT(elem->filter == &grpc_connected_filter);
+  GPR_ASSERT(cd->transport == nullptr);
+  cd->transport = static_cast<grpc_transport*>(t);
+
+  /* HACK(ctiller): increase call stack size for the channel to make space
+     for channel data. We need a cleaner (but performant) way to do this,
+     and I'm not sure what that is yet.
+     This is only "safe" because call stacks place no additional data after
+     the last call element, and the last call element MUST be the connected
+     channel. */
+  channel_stack->call_stack_size +=
+      grpc_transport_stream_size(static_cast<grpc_transport*>(t));
+}
+
+bool grpc_add_connected_filter(grpc_channel_stack_builder* builder,
+                               void* arg_must_be_null) {
+  GPR_ASSERT(arg_must_be_null == nullptr);
+  grpc_transport* t = grpc_channel_stack_builder_get_transport(builder);
+  GPR_ASSERT(t != nullptr);
+  return grpc_channel_stack_builder_append_filter(
+      builder, &grpc_connected_filter, bind_transport, t);
+}
+
+grpc_stream* grpc_connected_channel_get_stream(grpc_call_element* elem) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  return TRANSPORT_STREAM_FROM_CALL_DATA(calld);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.h
new file mode 100644
index 0000000..faa1c73
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/connected_channel.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
+#define GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+
+extern const grpc_channel_filter grpc_connected_filter;
+
+bool grpc_add_connected_filter(grpc_channel_stack_builder* builder,
+                               void* arg_must_be_null);
+
+/* Debug helper to dig the transport stream out of a call element */
+grpc_stream* grpc_connected_channel_get_stream(grpc_call_element* elem);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/context.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/context.h
new file mode 100644
index 0000000..e8a0245
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/context.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CONTEXT_H
+#define GRPC_CORE_LIB_CHANNEL_CONTEXT_H
+
+/// Call object context pointers.
+
+/// Call context is represented as an array of \a grpc_call_context_elements.
+/// This enum represents the indexes into the array, where each index
+/// contains a different type of value.
+typedef enum {
+  /// Value is either a \a grpc_client_security_context or a
+  /// \a grpc_server_security_context.
+  GRPC_CONTEXT_SECURITY = 0,
+
+  /// Value is a \a census_context.
+  GRPC_CONTEXT_TRACING,
+
+  /// Reserved for traffic_class_context.
+  GRPC_CONTEXT_TRAFFIC,
+
+  /// Holds a pointer to ServiceConfig::CallData associated with this call.
+  GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA,
+
+  GRPC_CONTEXT_COUNT
+} grpc_context_index;
+
+struct grpc_call_context_element {
+  void* value = nullptr;
+  void (*destroy)(void*) = nullptr;
+};
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CONTEXT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.cc
new file mode 100644
index 0000000..2bcc60a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.cc	
@@ -0,0 +1,264 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_handshaker_trace(false, "handshaker");
+
+namespace {
+
+char* HandshakerArgsString(HandshakerArgs* args) {
+  char* args_str = grpc_channel_args_string(args->args);
+  size_t num_args = args->args != nullptr ? args->args->num_args : 0;
+  size_t read_buffer_length =
+      args->read_buffer != nullptr ? args->read_buffer->length : 0;
+  char* str;
+  gpr_asprintf(&str,
+               "{endpoint=%p, args=%p {size=%" PRIuPTR
+               ": %s}, read_buffer=%p (length=%" PRIuPTR "), exit_early=%d}",
+               args->endpoint, args->args, num_args, args_str,
+               args->read_buffer, read_buffer_length, args->exit_early);
+  gpr_free(args_str);
+  return str;
+}
+
+}  // namespace
+
+HandshakeManager::HandshakeManager() { gpr_mu_init(&mu_); }
+
+/// Add \a mgr to the server side list of all pending handshake managers, the
+/// list starts with \a *head.
+// Not thread-safe. Caller needs to synchronize.
+void HandshakeManager::AddToPendingMgrList(HandshakeManager** head) {
+  GPR_ASSERT(prev_ == nullptr);
+  GPR_ASSERT(next_ == nullptr);
+  next_ = *head;
+  if (*head) {
+    (*head)->prev_ = this;
+  }
+  *head = this;
+}
+
+/// Remove \a mgr from the server side list of all pending handshake managers.
+// Not thread-safe. Caller needs to synchronize.
+void HandshakeManager::RemoveFromPendingMgrList(HandshakeManager** head) {
+  if (next_ != nullptr) {
+    next_->prev_ = prev_;
+  }
+  if (prev_ != nullptr) {
+    prev_->next_ = next_;
+  } else {
+    GPR_ASSERT(*head == this);
+    *head = next_;
+  }
+}
+
+/// Shutdown all pending handshake managers starting at head on the server
+/// side. Not thread-safe. Caller needs to synchronize.
+void HandshakeManager::ShutdownAllPending(grpc_error* why) {
+  auto* head = this;
+  while (head != nullptr) {
+    head->Shutdown(GRPC_ERROR_REF(why));
+    head = head->next_;
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+void HandshakeManager::Add(RefCountedPtr<Handshaker> handshaker) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_handshaker_trace)) {
+    gpr_log(
+        GPR_INFO,
+        "handshake_manager %p: adding handshaker %s [%p] at index %" PRIuPTR,
+        this, handshaker->name(), handshaker.get(), handshakers_.size());
+  }
+  MutexLock lock(&mu_);
+  handshakers_.push_back(std::move(handshaker));
+}
+
+HandshakeManager::~HandshakeManager() {
+  handshakers_.clear();
+  gpr_mu_destroy(&mu_);
+}
+
+void HandshakeManager::Shutdown(grpc_error* why) {
+  {
+    MutexLock lock(&mu_);
+    // Shutdown the handshaker that's currently in progress, if any.
+    if (!is_shutdown_ && index_ > 0) {
+      is_shutdown_ = true;
+      handshakers_[index_ - 1]->Shutdown(GRPC_ERROR_REF(why));
+    }
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+// Helper function to call either the next handshaker or the
+// on_handshake_done callback.
+// Returns true if we've scheduled the on_handshake_done callback.
+bool HandshakeManager::CallNextHandshakerLocked(grpc_error* error) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_handshaker_trace)) {
+    char* args_str = HandshakerArgsString(&args_);
+    gpr_log(GPR_INFO,
+            "handshake_manager %p: error=%s shutdown=%d index=%" PRIuPTR
+            ", args=%s",
+            this, grpc_error_string(error), is_shutdown_, index_, args_str);
+    gpr_free(args_str);
+  }
+  GPR_ASSERT(index_ <= handshakers_.size());
+  // If we got an error or we've been shut down or we're exiting early or
+  // we've finished the last handshaker, invoke the on_handshake_done
+  // callback.  Otherwise, call the next handshaker.
+  if (error != GRPC_ERROR_NONE || is_shutdown_ || args_.exit_early ||
+      index_ == handshakers_.size()) {
+    if (error == GRPC_ERROR_NONE && is_shutdown_) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("handshaker shutdown");
+      // It is possible that the endpoint has already been destroyed by
+      // a shutdown call while this callback was sitting on the ExecCtx
+      // with no error.
+      if (args_.endpoint != nullptr) {
+        // TODO(roth): It is currently necessary to shutdown endpoints
+        // before destroying then, even when we know that there are no
+        // pending read/write callbacks.  This should be fixed, at which
+        // point this can be removed.
+        grpc_endpoint_shutdown(args_.endpoint, GRPC_ERROR_REF(error));
+        grpc_endpoint_destroy(args_.endpoint);
+        args_.endpoint = nullptr;
+        grpc_channel_args_destroy(args_.args);
+        args_.args = nullptr;
+        grpc_slice_buffer_destroy_internal(args_.read_buffer);
+        gpr_free(args_.read_buffer);
+        args_.read_buffer = nullptr;
+      }
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_handshaker_trace)) {
+      gpr_log(GPR_INFO,
+              "handshake_manager %p: handshaking complete -- scheduling "
+              "on_handshake_done with error=%s",
+              this, grpc_error_string(error));
+    }
+    // Cancel deadline timer, since we're invoking the on_handshake_done
+    // callback now.
+    grpc_timer_cancel(&deadline_timer_);
+    ExecCtx::Run(DEBUG_LOCATION, &on_handshake_done_, error);
+    is_shutdown_ = true;
+  } else {
+    auto handshaker = handshakers_[index_];
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_handshaker_trace)) {
+      gpr_log(
+          GPR_INFO,
+          "handshake_manager %p: calling handshaker %s [%p] at index %" PRIuPTR,
+          this, handshaker->name(), handshaker.get(), index_);
+    }
+    handshaker->DoHandshake(acceptor_, &call_next_handshaker_, &args_);
+  }
+  ++index_;
+  return is_shutdown_;
+}
+
+void HandshakeManager::CallNextHandshakerFn(void* arg, grpc_error* error) {
+  auto* mgr = static_cast<HandshakeManager*>(arg);
+  bool done;
+  {
+    MutexLock lock(&mgr->mu_);
+    done = mgr->CallNextHandshakerLocked(GRPC_ERROR_REF(error));
+  }
+  // If we're invoked the final callback, we won't be coming back
+  // to this function, so we can release our reference to the
+  // handshake manager.
+  if (done) {
+    mgr->Unref();
+  }
+}
+
+void HandshakeManager::OnTimeoutFn(void* arg, grpc_error* error) {
+  auto* mgr = static_cast<HandshakeManager*>(arg);
+  if (error == GRPC_ERROR_NONE) {  // Timer fired, rather than being cancelled
+    mgr->Shutdown(GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshake timed out"));
+  }
+  mgr->Unref();
+}
+
+void HandshakeManager::DoHandshake(grpc_endpoint* endpoint,
+                                   const grpc_channel_args* channel_args,
+                                   grpc_millis deadline,
+                                   grpc_tcp_server_acceptor* acceptor,
+                                   grpc_iomgr_cb_func on_handshake_done,
+                                   void* user_data) {
+  bool done;
+  {
+    MutexLock lock(&mu_);
+    GPR_ASSERT(index_ == 0);
+    GPR_ASSERT(!is_shutdown_);
+    // Construct handshaker args.  These will be passed through all
+    // handshakers and eventually be freed by the on_handshake_done callback.
+    args_.endpoint = endpoint;
+    args_.args = grpc_channel_args_copy(channel_args);
+    args_.user_data = user_data;
+    args_.read_buffer =
+        static_cast<grpc_slice_buffer*>(gpr_malloc(sizeof(*args_.read_buffer)));
+    grpc_slice_buffer_init(args_.read_buffer);
+    if (acceptor != nullptr && acceptor->external_connection &&
+        acceptor->pending_data != nullptr) {
+      grpc_slice_buffer_swap(args_.read_buffer,
+                             &(acceptor->pending_data->data.raw.slice_buffer));
+    }
+    // Initialize state needed for calling handshakers.
+    acceptor_ = acceptor;
+    GRPC_CLOSURE_INIT(&call_next_handshaker_,
+                      &HandshakeManager::CallNextHandshakerFn, this,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&on_handshake_done_, on_handshake_done, &args_,
+                      grpc_schedule_on_exec_ctx);
+    // Start deadline timer, which owns a ref.
+    Ref().release();
+    GRPC_CLOSURE_INIT(&on_timeout_, &HandshakeManager::OnTimeoutFn, this,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(&deadline_timer_, deadline, &on_timeout_);
+    // Start first handshaker, which also owns a ref.
+    Ref().release();
+    done = CallNextHandshakerLocked(GRPC_ERROR_NONE);
+  }
+  if (done) {
+    Unref();
+  }
+}
+
+}  // namespace grpc_core
+
+void grpc_handshake_manager_add(grpc_handshake_manager* mgr,
+                                grpc_handshaker* handshaker) {
+  // This is a transition method to aid the API change for handshakers.
+  using namespace grpc_core;
+  RefCountedPtr<Handshaker> refd_hs(static_cast<Handshaker*>(handshaker));
+  mgr->Add(refd_hs);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.h
new file mode 100644
index 0000000..4f064d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker.h	
@@ -0,0 +1,177 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/string_util.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
+
+namespace grpc_core {
+
+/// Handshakers are used to perform initial handshakes on a connection
+/// before the client sends the initial request.  Some examples of what
+/// a handshaker can be used for includes support for HTTP CONNECT on
+/// the client side and various types of security initialization.
+///
+/// In general, handshakers should be used via a handshake manager.
+
+/// Arguments passed through handshakers and to the on_handshake_done callback.
+///
+/// For handshakers, all members are input/output parameters; for
+/// example, a handshaker may read from or write to \a endpoint and
+/// then later replace it with a wrapped endpoint.  Similarly, a
+/// handshaker may modify \a args.
+///
+/// A handshaker takes ownership of the members while a handshake is in
+/// progress.  Upon failure or shutdown of an in-progress handshaker,
+/// the handshaker is responsible for destroying the members and setting
+/// them to NULL before invoking the on_handshake_done callback.
+///
+/// For the on_handshake_done callback, all members are input arguments,
+/// which the callback takes ownership of.
+struct HandshakerArgs {
+  grpc_endpoint* endpoint = nullptr;
+  grpc_channel_args* args = nullptr;
+  grpc_slice_buffer* read_buffer = nullptr;
+  // A handshaker may set this to true before invoking on_handshake_done
+  // to indicate that subsequent handshakers should be skipped.
+  bool exit_early = false;
+  // User data passed through the handshake manager.  Not used by
+  // individual handshakers.
+  void* user_data = nullptr;
+};
+
+///
+/// Handshaker
+///
+
+class Handshaker : public RefCounted<Handshaker> {
+ public:
+  virtual ~Handshaker() = default;
+  virtual void Shutdown(grpc_error* why) = 0;
+  virtual void DoHandshake(grpc_tcp_server_acceptor* acceptor,
+                           grpc_closure* on_handshake_done,
+                           HandshakerArgs* args) = 0;
+  virtual const char* name() const = 0;
+};
+
+//
+// HandshakeManager
+//
+
+class HandshakeManager : public RefCounted<HandshakeManager> {
+ public:
+  HandshakeManager();
+  ~HandshakeManager();
+
+  /// Add \a mgr to the server side list of all pending handshake managers, the
+  /// list starts with \a *head.
+  // Not thread-safe. Caller needs to synchronize.
+  void AddToPendingMgrList(HandshakeManager** head);
+
+  /// Remove \a mgr from the server side list of all pending handshake managers.
+  // Not thread-safe. Caller needs to synchronize.
+  void RemoveFromPendingMgrList(HandshakeManager** head);
+
+  /// Shutdown all pending handshake managers starting at head on the server
+  /// side. Not thread-safe. Caller needs to synchronize.
+  void ShutdownAllPending(grpc_error* why);
+
+  /// Adds a handshaker to the handshake manager.
+  /// Takes ownership of \a handshaker.
+  void Add(RefCountedPtr<Handshaker> handshaker);
+
+  /// Shuts down the handshake manager (e.g., to clean up when the operation is
+  /// aborted in the middle).
+  void Shutdown(grpc_error* why);
+
+  /// Invokes handshakers in the order they were added.
+  /// Takes ownership of \a endpoint, and then passes that ownership to
+  /// the \a on_handshake_done callback.
+  /// Does NOT take ownership of \a channel_args.  Instead, makes a copy before
+  /// invoking the first handshaker.
+  /// \a acceptor will be nullptr for client-side handshakers.
+  ///
+  /// When done, invokes \a on_handshake_done with a HandshakerArgs
+  /// object as its argument.  If the callback is invoked with error !=
+  /// GRPC_ERROR_NONE, then handshaking failed and the handshaker has done
+  /// the necessary clean-up.  Otherwise, the callback takes ownership of
+  /// the arguments.
+  void DoHandshake(grpc_endpoint* endpoint,
+                   const grpc_channel_args* channel_args, grpc_millis deadline,
+                   grpc_tcp_server_acceptor* acceptor,
+                   grpc_iomgr_cb_func on_handshake_done, void* user_data);
+
+ private:
+  bool CallNextHandshakerLocked(grpc_error* error);
+
+  // A function used as the handshaker-done callback when chaining
+  // handshakers together.
+  static void CallNextHandshakerFn(void* arg, grpc_error* error);
+
+  // Callback invoked when deadline is exceeded.
+  static void OnTimeoutFn(void* arg, grpc_error* error);
+
+  static const size_t HANDSHAKERS_INIT_SIZE = 2;
+
+  gpr_mu mu_;
+  bool is_shutdown_ = false;
+  // An array of handshakers added via grpc_handshake_manager_add().
+  InlinedVector<RefCountedPtr<Handshaker>, HANDSHAKERS_INIT_SIZE> handshakers_;
+  // The index of the handshaker to invoke next and closure to invoke it.
+  size_t index_ = 0;
+  grpc_closure call_next_handshaker_;
+  // The acceptor to call the handshakers with.
+  grpc_tcp_server_acceptor* acceptor_;
+  // Deadline timer across all handshakers.
+  grpc_timer deadline_timer_;
+  grpc_closure on_timeout_;
+  // The final callback and user_data to invoke after the last handshaker.
+  grpc_closure on_handshake_done_;
+  // Handshaker args.
+  HandshakerArgs args_;
+  // Links to the previous and next managers in a list of all pending handshakes
+  // Used at server side only.
+  HandshakeManager* prev_ = nullptr;
+  HandshakeManager* next_ = nullptr;
+};
+
+}  // namespace grpc_core
+
+// TODO(arjunroy): These are transitional to account for the new handshaker API
+// and will eventually be removed entirely.
+typedef grpc_core::HandshakeManager grpc_handshake_manager;
+typedef grpc_core::Handshaker grpc_handshaker;
+void grpc_handshake_manager_add(grpc_handshake_manager* mgr,
+                                grpc_handshaker* handshaker);
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_factory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_factory.h
new file mode 100644
index 0000000..520e5e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_factory.h	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker.h"
+
+// A handshaker factory is used to create handshakers.
+
+namespace grpc_core {
+
+class HandshakerFactory {
+ public:
+  virtual void AddHandshakers(const grpc_channel_args* args,
+                              grpc_pollset_set* interested_parties,
+                              HandshakeManager* handshake_mgr) = 0;
+  virtual ~HandshakerFactory() = default;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.cc
new file mode 100644
index 0000000..9ec458b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.cc	
@@ -0,0 +1,117 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+
+#include <string.h>
+#include <algorithm>
+
+#include <grpc/support/alloc.h>
+
+//
+// grpc_handshaker_factory_list
+//
+
+namespace grpc_core {
+
+namespace {
+
+class HandshakerFactoryList {
+ public:
+  void Register(bool at_start, std::unique_ptr<HandshakerFactory> factory);
+  void AddHandshakers(const grpc_channel_args* args,
+                      grpc_pollset_set* interested_parties,
+                      HandshakeManager* handshake_mgr);
+
+ private:
+  InlinedVector<std::unique_ptr<HandshakerFactory>, 2> factories_;
+};
+
+HandshakerFactoryList* g_handshaker_factory_lists = nullptr;
+
+}  // namespace
+
+void HandshakerFactoryList::Register(
+    bool at_start, std::unique_ptr<HandshakerFactory> factory) {
+  factories_.push_back(std::move(factory));
+  if (at_start) {
+    auto* end = &factories_[factories_.size() - 1];
+    std::rotate(&factories_[0], end, end + 1);
+  }
+}
+
+void HandshakerFactoryList::AddHandshakers(const grpc_channel_args* args,
+                                           grpc_pollset_set* interested_parties,
+                                           HandshakeManager* handshake_mgr) {
+  for (size_t idx = 0; idx < factories_.size(); ++idx) {
+    auto& handshaker_factory = factories_[idx];
+    handshaker_factory->AddHandshakers(args, interested_parties, handshake_mgr);
+  }
+}
+
+//
+// plugin
+//
+
+void HandshakerRegistry::Init() {
+  GPR_ASSERT(g_handshaker_factory_lists == nullptr);
+  g_handshaker_factory_lists =
+      static_cast<HandshakerFactoryList*>(gpr_malloc_aligned(
+          sizeof(*g_handshaker_factory_lists) * NUM_HANDSHAKER_TYPES,
+          GPR_MAX_ALIGNMENT));
+
+  GPR_ASSERT(g_handshaker_factory_lists != nullptr);
+  for (auto idx = 0; idx < NUM_HANDSHAKER_TYPES; ++idx) {
+    auto factory_list = g_handshaker_factory_lists + idx;
+    new (factory_list) HandshakerFactoryList();
+  }
+}
+
+void HandshakerRegistry::Shutdown() {
+  GPR_ASSERT(g_handshaker_factory_lists != nullptr);
+  for (auto idx = 0; idx < NUM_HANDSHAKER_TYPES; ++idx) {
+    auto factory_list = g_handshaker_factory_lists + idx;
+    factory_list->~HandshakerFactoryList();
+  }
+  gpr_free_aligned(g_handshaker_factory_lists);
+  g_handshaker_factory_lists = nullptr;
+}
+
+void HandshakerRegistry::RegisterHandshakerFactory(
+    bool at_start, HandshakerType handshaker_type,
+    std::unique_ptr<HandshakerFactory> factory) {
+  GPR_ASSERT(g_handshaker_factory_lists != nullptr);
+  auto& factory_list = g_handshaker_factory_lists[handshaker_type];
+  factory_list.Register(at_start, std::move(factory));
+}
+
+void HandshakerRegistry::AddHandshakers(HandshakerType handshaker_type,
+                                        const grpc_channel_args* args,
+                                        grpc_pollset_set* interested_parties,
+                                        HandshakeManager* handshake_mgr) {
+  GPR_ASSERT(g_handshaker_factory_lists != nullptr);
+  auto& factory_list = g_handshaker_factory_lists[handshaker_type];
+  factory_list.AddHandshakers(args, interested_parties, handshake_mgr);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.h
new file mode 100644
index 0000000..4a02efc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/handshaker_registry.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/channel/handshaker_factory.h"
+
+namespace grpc_core {
+
+typedef enum {
+  HANDSHAKER_CLIENT = 0,
+  HANDSHAKER_SERVER,
+  NUM_HANDSHAKER_TYPES,  // Must be last.
+} HandshakerType;
+
+class HandshakerRegistry {
+ public:
+  /// Registers a new handshaker factory.  Takes ownership.
+  /// If \a at_start is true, the new handshaker will be at the beginning of
+  /// the list.  Otherwise, it will be added to the end.
+  static void RegisterHandshakerFactory(
+      bool at_start, HandshakerType handshaker_type,
+      std::unique_ptr<HandshakerFactory> factory);
+  static void AddHandshakers(HandshakerType handshaker_type,
+                             const grpc_channel_args* args,
+                             grpc_pollset_set* interested_parties,
+                             HandshakeManager* handshake_mgr);
+  static void Init();
+  static void Shutdown();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_HANDSHAKER_REGISTRY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.cc
new file mode 100644
index 0000000..563db40
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.cc	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/status_util.h"
+
+#include "src/core/lib/gpr/useful.h"
+
+typedef struct {
+  const char* str;
+  grpc_status_code status;
+} status_string_entry;
+
+static const status_string_entry g_status_string_entries[] = {
+    {"OK", GRPC_STATUS_OK},
+    {"CANCELLED", GRPC_STATUS_CANCELLED},
+    {"UNKNOWN", GRPC_STATUS_UNKNOWN},
+    {"INVALID_ARGUMENT", GRPC_STATUS_INVALID_ARGUMENT},
+    {"DEADLINE_EXCEEDED", GRPC_STATUS_DEADLINE_EXCEEDED},
+    {"NOT_FOUND", GRPC_STATUS_NOT_FOUND},
+    {"ALREADY_EXISTS", GRPC_STATUS_ALREADY_EXISTS},
+    {"PERMISSION_DENIED", GRPC_STATUS_PERMISSION_DENIED},
+    {"UNAUTHENTICATED", GRPC_STATUS_UNAUTHENTICATED},
+    {"RESOURCE_EXHAUSTED", GRPC_STATUS_RESOURCE_EXHAUSTED},
+    {"FAILED_PRECONDITION", GRPC_STATUS_FAILED_PRECONDITION},
+    {"ABORTED", GRPC_STATUS_ABORTED},
+    {"OUT_OF_RANGE", GRPC_STATUS_OUT_OF_RANGE},
+    {"UNIMPLEMENTED", GRPC_STATUS_UNIMPLEMENTED},
+    {"INTERNAL", GRPC_STATUS_INTERNAL},
+    {"UNAVAILABLE", GRPC_STATUS_UNAVAILABLE},
+    {"DATA_LOSS", GRPC_STATUS_DATA_LOSS},
+};
+
+bool grpc_status_code_from_string(const char* status_str,
+                                  grpc_status_code* status) {
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(g_status_string_entries); ++i) {
+    if (strcmp(status_str, g_status_string_entries[i].str) == 0) {
+      *status = g_status_string_entries[i].status;
+      return true;
+    }
+  }
+  return false;
+}
+
+const char* grpc_status_code_to_string(grpc_status_code status) {
+  switch (status) {
+    case GRPC_STATUS_OK:
+      return "OK";
+    case GRPC_STATUS_CANCELLED:
+      return "CANCELLED";
+    case GRPC_STATUS_UNKNOWN:
+      return "UNKNOWN";
+    case GRPC_STATUS_INVALID_ARGUMENT:
+      return "INVALID_ARGUMENT";
+    case GRPC_STATUS_DEADLINE_EXCEEDED:
+      return "DEADLINE_EXCEEDED";
+    case GRPC_STATUS_NOT_FOUND:
+      return "NOT_FOUND";
+    case GRPC_STATUS_ALREADY_EXISTS:
+      return "ALREADY_EXISTS";
+    case GRPC_STATUS_PERMISSION_DENIED:
+      return "PERMISSION_DENIED";
+    case GRPC_STATUS_UNAUTHENTICATED:
+      return "UNAUTHENTICATED";
+    case GRPC_STATUS_RESOURCE_EXHAUSTED:
+      return "RESOURCE_EXHAUSTED";
+    case GRPC_STATUS_FAILED_PRECONDITION:
+      return "FAILED_PRECONDITION";
+    case GRPC_STATUS_ABORTED:
+      return "ABORTED";
+    case GRPC_STATUS_OUT_OF_RANGE:
+      return "OUT_OF_RANGE";
+    case GRPC_STATUS_UNIMPLEMENTED:
+      return "UNIMPLEMENTED";
+    case GRPC_STATUS_INTERNAL:
+      return "INTERNAL";
+    case GRPC_STATUS_UNAVAILABLE:
+      return "UNAVAILABLE";
+    case GRPC_STATUS_DATA_LOSS:
+      return "DATA_LOSS";
+    default:
+      return "UNKNOWN";
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.h
new file mode 100644
index 0000000..5409de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/channel/status_util.h	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H
+#define GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+
+#include <stdbool.h>
+#include <string.h>
+
+/// If \a status_str is a valid status string, sets \a status to the
+/// corresponding status value and returns true.
+bool grpc_status_code_from_string(const char* status_str,
+                                  grpc_status_code* status);
+
+/// Returns the string form of \a status, or "UNKNOWN" if invalid.
+const char* grpc_status_code_to_string(grpc_status_code status);
+
+namespace grpc_core {
+namespace internal {
+
+/// A set of grpc_status_code values.
+class StatusCodeSet {
+ public:
+  bool Empty() const { return status_code_mask_ == 0; }
+
+  void Add(grpc_status_code status) { status_code_mask_ |= (1 << status); }
+
+  bool Contains(grpc_status_code status) const {
+    return status_code_mask_ & (1 << status);
+  }
+
+ private:
+  int status_code_mask_ = 0;  // A bitfield of status codes in the set.
+};
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_STATUS_UTIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/algorithm_metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/algorithm_metadata.h
new file mode 100644
index 0000000..d58d2f5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/algorithm_metadata.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
+#define GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/compression.h>
+#include "src/core/lib/compression/compression_internal.h"
+#include "src/core/lib/transport/metadata.h"
+
+/** Return compression algorithm based metadata value */
+grpc_slice grpc_compression_algorithm_slice(
+    grpc_compression_algorithm algorithm);
+
+/** Find compression algorithm based on passed in mdstr - returns
+ *  GRPC_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_compression_algorithm grpc_compression_algorithm_from_slice(
+    const grpc_slice& str);
+
+/** Return compression algorithm based metadata element */
+grpc_mdelem grpc_compression_encoding_mdelem(
+    grpc_compression_algorithm algorithm);
+
+/** Return message compression algorithm based metadata element (grpc-encoding:
+ * xxx) */
+grpc_mdelem grpc_message_compression_encoding_mdelem(
+    grpc_message_compression_algorithm algorithm);
+
+/** Return stream compression algorithm based metadata element
+ * (content-encoding: xxx) */
+grpc_mdelem grpc_stream_compression_encoding_mdelem(
+    grpc_stream_compression_algorithm algorithm);
+
+/** Find compression algorithm based on passed in mdstr - returns
+ * GRPC_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_message_compression_algorithm
+grpc_message_compression_algorithm_from_slice(const grpc_slice& str);
+
+/** Find stream compression algorithm based on passed in mdstr - returns
+ * GRPC_STREAM_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice(
+    const grpc_slice& str);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression.cc
new file mode 100644
index 0000000..8a0abca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression.cc	
@@ -0,0 +1,179 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/compression/compression_internal.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+int grpc_compression_algorithm_is_message(
+    grpc_compression_algorithm algorithm) {
+  return (algorithm >= GRPC_COMPRESS_DEFLATE && algorithm <= GRPC_COMPRESS_GZIP)
+             ? 1
+             : 0;
+}
+
+int grpc_compression_algorithm_is_stream(grpc_compression_algorithm algorithm) {
+  return (algorithm == GRPC_COMPRESS_STREAM_GZIP) ? 1 : 0;
+}
+
+int grpc_compression_algorithm_parse(grpc_slice name,
+                                     grpc_compression_algorithm* algorithm) {
+  if (grpc_slice_eq_static_interned(name, GRPC_MDSTR_IDENTITY)) {
+    *algorithm = GRPC_COMPRESS_NONE;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(name, GRPC_MDSTR_DEFLATE)) {
+    *algorithm = GRPC_COMPRESS_DEFLATE;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(name, GRPC_MDSTR_GZIP)) {
+    *algorithm = GRPC_COMPRESS_GZIP;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(name,
+                                           GRPC_MDSTR_STREAM_SLASH_GZIP)) {
+    *algorithm = GRPC_COMPRESS_STREAM_GZIP;
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
+                                    const char** name) {
+  GRPC_API_TRACE("grpc_compression_algorithm_name(algorithm=%d, name=%p)", 2,
+                 ((int)algorithm, name));
+  switch (algorithm) {
+    case GRPC_COMPRESS_NONE:
+      *name = "identity";
+      return 1;
+    case GRPC_COMPRESS_DEFLATE:
+      *name = "deflate";
+      return 1;
+    case GRPC_COMPRESS_GZIP:
+      *name = "gzip";
+      return 1;
+    case GRPC_COMPRESS_STREAM_GZIP:
+      *name = "stream/gzip";
+      return 1;
+    case GRPC_COMPRESS_ALGORITHMS_COUNT:
+      return 0;
+  }
+  return 0;
+}
+
+grpc_compression_algorithm grpc_compression_algorithm_for_level(
+    grpc_compression_level level, uint32_t accepted_encodings) {
+  grpc_compression_algorithm algo;
+  if (level == GRPC_COMPRESS_LEVEL_NONE) {
+    return GRPC_COMPRESS_NONE;
+  } else if (level <= GRPC_COMPRESS_LEVEL_HIGH) {
+    // TODO(mxyan): Design algorithm to select from all algorithms, including
+    // stream compression algorithm
+    if (!grpc_compression_algorithm_from_message_stream_compression_algorithm(
+            &algo,
+            grpc_message_compression_algorithm_for_level(
+                level,
+                grpc_compression_bitset_to_message_bitset(accepted_encodings)),
+            static_cast<grpc_stream_compression_algorithm>(0))) {
+      gpr_log(GPR_ERROR, "Parse compression level error");
+      return GRPC_COMPRESS_NONE;
+    }
+    return algo;
+  } else {
+    gpr_log(GPR_ERROR, "Unknown compression level: %d", level);
+    return GRPC_COMPRESS_NONE;
+  }
+}
+
+void grpc_compression_options_init(grpc_compression_options* opts) {
+  memset(opts, 0, sizeof(*opts));
+  /* all enabled by default */
+  opts->enabled_algorithms_bitset = (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1;
+}
+
+void grpc_compression_options_enable_algorithm(
+    grpc_compression_options* opts, grpc_compression_algorithm algorithm) {
+  GPR_BITSET(&opts->enabled_algorithms_bitset, algorithm);
+}
+
+void grpc_compression_options_disable_algorithm(
+    grpc_compression_options* opts, grpc_compression_algorithm algorithm) {
+  GPR_BITCLEAR(&opts->enabled_algorithms_bitset, algorithm);
+}
+
+int grpc_compression_options_is_algorithm_enabled(
+    const grpc_compression_options* opts,
+    grpc_compression_algorithm algorithm) {
+  return grpc_compression_options_is_algorithm_enabled_internal(opts,
+                                                                algorithm);
+}
+
+grpc_slice grpc_compression_algorithm_slice(
+    grpc_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_COMPRESS_NONE:
+      return GRPC_MDSTR_IDENTITY;
+    case GRPC_COMPRESS_DEFLATE:
+      return GRPC_MDSTR_DEFLATE;
+    case GRPC_COMPRESS_GZIP:
+      return GRPC_MDSTR_GZIP;
+    case GRPC_COMPRESS_STREAM_GZIP:
+      return GRPC_MDSTR_STREAM_SLASH_GZIP;
+    case GRPC_COMPRESS_ALGORITHMS_COUNT:
+      return grpc_empty_slice();
+  }
+  return grpc_empty_slice();
+}
+
+grpc_compression_algorithm grpc_compression_algorithm_from_slice(
+    const grpc_slice& str) {
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_IDENTITY))
+    return GRPC_COMPRESS_NONE;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_DEFLATE))
+    return GRPC_COMPRESS_DEFLATE;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_GZIP))
+    return GRPC_COMPRESS_GZIP;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_STREAM_SLASH_GZIP))
+    return GRPC_COMPRESS_STREAM_GZIP;
+  return GRPC_COMPRESS_ALGORITHMS_COUNT;
+}
+
+grpc_mdelem grpc_compression_encoding_mdelem(
+    grpc_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_COMPRESS_NONE:
+      return GRPC_MDELEM_GRPC_ENCODING_IDENTITY;
+    case GRPC_COMPRESS_DEFLATE:
+      return GRPC_MDELEM_GRPC_ENCODING_DEFLATE;
+    case GRPC_COMPRESS_GZIP:
+      return GRPC_MDELEM_GRPC_ENCODING_GZIP;
+    case GRPC_COMPRESS_STREAM_GZIP:
+      return GRPC_MDELEM_GRPC_ENCODING_GZIP;
+    default:
+      break;
+  }
+  return GRPC_MDNULL;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.cc
new file mode 100644
index 0000000..6bbda64
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.cc	
@@ -0,0 +1,134 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/compression/compression_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+
+grpc_compression_algorithm
+grpc_channel_args_get_channel_default_compression_algorithm(
+    const grpc_channel_args* a) {
+  size_t i;
+  if (a == nullptr) return GRPC_COMPRESS_NONE;
+  for (i = 0; i < a->num_args; ++i) {
+    if (a->args[i].type == GRPC_ARG_INTEGER &&
+        !strcmp(GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM, a->args[i].key)) {
+      grpc_compression_algorithm default_algorithm =
+          static_cast<grpc_compression_algorithm>(a->args[i].value.integer);
+      return default_algorithm < GRPC_COMPRESS_ALGORITHMS_COUNT
+                 ? default_algorithm
+                 : GRPC_COMPRESS_NONE;
+    }
+  }
+  return GRPC_COMPRESS_NONE;
+}
+
+grpc_channel_args* grpc_channel_args_set_channel_default_compression_algorithm(
+    grpc_channel_args* a, grpc_compression_algorithm algorithm) {
+  GPR_ASSERT(algorithm < GRPC_COMPRESS_ALGORITHMS_COUNT);
+  grpc_arg tmp;
+  tmp.type = GRPC_ARG_INTEGER;
+  tmp.key = (char*)GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM;
+  tmp.value.integer = algorithm;
+  return grpc_channel_args_copy_and_add(a, &tmp, 1);
+}
+
+/** Returns 1 if the argument for compression algorithm's enabled states bitset
+ * was found in \a a, returning the arg's value in \a states. Otherwise, returns
+ * 0. */
+static int find_compression_algorithm_states_bitset(const grpc_channel_args* a,
+                                                    int** states_arg) {
+  if (a != nullptr) {
+    size_t i;
+    for (i = 0; i < a->num_args; ++i) {
+      if (a->args[i].type == GRPC_ARG_INTEGER &&
+          !strcmp(GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET,
+                  a->args[i].key)) {
+        *states_arg = &a->args[i].value.integer;
+        **states_arg =
+            (**states_arg & ((1 << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1)) |
+            0x1; /* forcefully enable support for no compression */
+        return 1;
+      }
+    }
+  }
+  return 0; /* GPR_FALSE */
+}
+
+grpc_channel_args* grpc_channel_args_compression_algorithm_set_state(
+    grpc_channel_args** a, grpc_compression_algorithm algorithm, int state) {
+  int* states_arg = nullptr;
+  grpc_channel_args* result = *a;
+  const int states_arg_found =
+      find_compression_algorithm_states_bitset(*a, &states_arg);
+
+  if (grpc_channel_args_get_channel_default_compression_algorithm(*a) ==
+          algorithm &&
+      state == 0) {
+    const char* algo_name = nullptr;
+    GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algo_name) != 0);
+    gpr_log(GPR_ERROR,
+            "Tried to disable default compression algorithm '%s'. The "
+            "operation has been ignored.",
+            algo_name);
+  } else if (states_arg_found) {
+    if (state != 0) {
+      GPR_BITSET((unsigned*)states_arg, algorithm);
+    } else if (algorithm != GRPC_COMPRESS_NONE) {
+      GPR_BITCLEAR((unsigned*)states_arg, algorithm);
+    }
+  } else {
+    /* create a new arg */
+    grpc_arg tmp;
+    tmp.type = GRPC_ARG_INTEGER;
+    tmp.key = (char*)GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET;
+    /* all enabled by default */
+    tmp.value.integer = (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1;
+    if (state != 0) {
+      GPR_BITSET((unsigned*)&tmp.value.integer, algorithm);
+    } else if (algorithm != GRPC_COMPRESS_NONE) {
+      GPR_BITCLEAR((unsigned*)&tmp.value.integer, algorithm);
+    }
+    result = grpc_channel_args_copy_and_add(*a, &tmp, 1);
+    grpc_channel_args_destroy(*a);
+    *a = result;
+  }
+  return result;
+}
+
+uint32_t grpc_channel_args_compression_algorithm_get_states(
+    const grpc_channel_args* a) {
+  int* states_arg;
+  if (find_compression_algorithm_states_bitset(a, &states_arg)) {
+    return static_cast<uint32_t>(*states_arg);
+  } else {
+    return (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1; /* All algs. enabled */
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.h
new file mode 100644
index 0000000..f1abc12
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_args.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H
+#define GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/compression.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+/** Returns the compression algorithm set in \a a. */
+grpc_compression_algorithm
+grpc_channel_args_get_channel_default_compression_algorithm(
+    const grpc_channel_args* a);
+
+/** Returns a channel arg instance with compression enabled. If \a a is
+ * non-NULL, its args are copied. N.B. GRPC_COMPRESS_NONE disables compression
+ * for the channel. */
+grpc_channel_args* grpc_channel_args_set_channel_default_compression_algorithm(
+    grpc_channel_args* a, grpc_compression_algorithm algorithm);
+
+/** Sets the support for the given compression algorithm. By default, all
+ * compression algorithms are enabled. It's an error to disable an algorithm set
+ * by grpc_channel_args_set_compression_algorithm.
+ *
+ * Returns an instance with the updated algorithm states. The \a a pointer is
+ * modified to point to the returned instance (which may be different from the
+ * input value of \a a). */
+grpc_channel_args* grpc_channel_args_compression_algorithm_set_state(
+    grpc_channel_args** a, grpc_compression_algorithm algorithm, int state);
+
+/** Returns the bitset representing the support state (true for enabled, false
+ * for disabled) for compression algorithms.
+ *
+ * The i-th bit of the returned bitset corresponds to the i-th entry in the
+ * grpc_compression_algorithm enum. */
+uint32_t grpc_channel_args_compression_algorithm_get_states(
+    const grpc_channel_args* a);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_COMPRESSION_ARGS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.cc
new file mode 100644
index 0000000..e0cf6d4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.cc	
@@ -0,0 +1,280 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/compression/compression_internal.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+/* Interfaces related to MD */
+
+grpc_message_compression_algorithm
+grpc_message_compression_algorithm_from_slice(const grpc_slice& str) {
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_IDENTITY))
+    return GRPC_MESSAGE_COMPRESS_NONE;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_DEFLATE))
+    return GRPC_MESSAGE_COMPRESS_DEFLATE;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_GZIP))
+    return GRPC_MESSAGE_COMPRESS_GZIP;
+  return GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT;
+}
+
+grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice(
+    const grpc_slice& str) {
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_IDENTITY))
+    return GRPC_STREAM_COMPRESS_NONE;
+  if (grpc_slice_eq_static_interned(str, GRPC_MDSTR_GZIP))
+    return GRPC_STREAM_COMPRESS_GZIP;
+  return GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT;
+}
+
+grpc_mdelem grpc_message_compression_encoding_mdelem(
+    grpc_message_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_MESSAGE_COMPRESS_NONE:
+      return GRPC_MDELEM_GRPC_ENCODING_IDENTITY;
+    case GRPC_MESSAGE_COMPRESS_DEFLATE:
+      return GRPC_MDELEM_GRPC_ENCODING_DEFLATE;
+    case GRPC_MESSAGE_COMPRESS_GZIP:
+      return GRPC_MDELEM_GRPC_ENCODING_GZIP;
+    default:
+      break;
+  }
+  return GRPC_MDNULL;
+}
+
+grpc_mdelem grpc_stream_compression_encoding_mdelem(
+    grpc_stream_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_STREAM_COMPRESS_NONE:
+      return GRPC_MDELEM_CONTENT_ENCODING_IDENTITY;
+    case GRPC_STREAM_COMPRESS_GZIP:
+      return GRPC_MDELEM_CONTENT_ENCODING_GZIP;
+    default:
+      break;
+  }
+  return GRPC_MDNULL;
+}
+
+/* Interfaces performing transformation between compression algorithms and
+ * levels. */
+grpc_message_compression_algorithm
+grpc_compression_algorithm_to_message_compression_algorithm(
+    grpc_compression_algorithm algo) {
+  switch (algo) {
+    case GRPC_COMPRESS_DEFLATE:
+      return GRPC_MESSAGE_COMPRESS_DEFLATE;
+    case GRPC_COMPRESS_GZIP:
+      return GRPC_MESSAGE_COMPRESS_GZIP;
+    default:
+      return GRPC_MESSAGE_COMPRESS_NONE;
+  }
+}
+
+grpc_stream_compression_algorithm
+grpc_compression_algorithm_to_stream_compression_algorithm(
+    grpc_compression_algorithm algo) {
+  switch (algo) {
+    case GRPC_COMPRESS_STREAM_GZIP:
+      return GRPC_STREAM_COMPRESS_GZIP;
+    default:
+      return GRPC_STREAM_COMPRESS_NONE;
+  }
+}
+
+uint32_t grpc_compression_bitset_to_message_bitset(uint32_t bitset) {
+  return bitset & ((1u << GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT) - 1);
+}
+
+uint32_t grpc_compression_bitset_to_stream_bitset(uint32_t bitset) {
+  uint32_t identity = (bitset & 1u);
+  uint32_t other_bits =
+      (bitset >> (GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT - 1)) &
+      ((1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) - 2);
+  return identity | other_bits;
+}
+
+uint32_t grpc_compression_bitset_from_message_stream_compression_bitset(
+    uint32_t message_bitset, uint32_t stream_bitset) {
+  uint32_t offset_stream_bitset =
+      (stream_bitset & 1u) |
+      ((stream_bitset & (~1u)) << (GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT - 1));
+  return message_bitset | offset_stream_bitset;
+}
+
+int grpc_compression_algorithm_from_message_stream_compression_algorithm(
+    grpc_compression_algorithm* algorithm,
+    grpc_message_compression_algorithm message_algorithm,
+    grpc_stream_compression_algorithm stream_algorithm) {
+  if (message_algorithm != GRPC_MESSAGE_COMPRESS_NONE &&
+      stream_algorithm != GRPC_STREAM_COMPRESS_NONE) {
+    *algorithm = GRPC_COMPRESS_NONE;
+    return 0;
+  }
+  if (message_algorithm == GRPC_MESSAGE_COMPRESS_NONE) {
+    switch (stream_algorithm) {
+      case GRPC_STREAM_COMPRESS_NONE:
+        *algorithm = GRPC_COMPRESS_NONE;
+        return 1;
+      case GRPC_STREAM_COMPRESS_GZIP:
+        *algorithm = GRPC_COMPRESS_STREAM_GZIP;
+        return 1;
+      default:
+        *algorithm = GRPC_COMPRESS_NONE;
+        return 0;
+    }
+  } else {
+    switch (message_algorithm) {
+      case GRPC_MESSAGE_COMPRESS_NONE:
+        *algorithm = GRPC_COMPRESS_NONE;
+        return 1;
+      case GRPC_MESSAGE_COMPRESS_DEFLATE:
+        *algorithm = GRPC_COMPRESS_DEFLATE;
+        return 1;
+      case GRPC_MESSAGE_COMPRESS_GZIP:
+        *algorithm = GRPC_COMPRESS_GZIP;
+        return 1;
+      default:
+        *algorithm = GRPC_COMPRESS_NONE;
+        return 0;
+    }
+  }
+  return 0;
+}
+
+/* Interfaces for message compression. */
+
+int grpc_message_compression_algorithm_name(
+    grpc_message_compression_algorithm algorithm, const char** name) {
+  GRPC_API_TRACE(
+      "grpc_message_compression_algorithm_name(algorithm=%d, name=%p)", 2,
+      ((int)algorithm, name));
+  switch (algorithm) {
+    case GRPC_MESSAGE_COMPRESS_NONE:
+      *name = "identity";
+      return 1;
+    case GRPC_MESSAGE_COMPRESS_DEFLATE:
+      *name = "deflate";
+      return 1;
+    case GRPC_MESSAGE_COMPRESS_GZIP:
+      *name = "gzip";
+      return 1;
+    case GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT:
+      return 0;
+  }
+  return 0;
+}
+
+/* TODO(dgq): Add the ability to specify parameters to the individual
+ * compression algorithms */
+grpc_message_compression_algorithm grpc_message_compression_algorithm_for_level(
+    grpc_compression_level level, uint32_t accepted_encodings) {
+  GRPC_API_TRACE("grpc_message_compression_algorithm_for_level(level=%d)", 1,
+                 ((int)level));
+  if (level > GRPC_COMPRESS_LEVEL_HIGH) {
+    gpr_log(GPR_ERROR, "Unknown message compression level %d.",
+            static_cast<int>(level));
+    abort();
+  }
+
+  const size_t num_supported =
+      GPR_BITCOUNT(accepted_encodings) - 1; /* discard NONE */
+  if (level == GRPC_COMPRESS_LEVEL_NONE || num_supported == 0) {
+    return GRPC_MESSAGE_COMPRESS_NONE;
+  }
+
+  GPR_ASSERT(level > 0);
+
+  /* Establish a "ranking" or compression algorithms in increasing order of
+   * compression.
+   * This is simplistic and we will probably want to introduce other dimensions
+   * in the future (cpu/memory cost, etc). */
+  const grpc_message_compression_algorithm algos_ranking[] = {
+      GRPC_MESSAGE_COMPRESS_GZIP, GRPC_MESSAGE_COMPRESS_DEFLATE};
+
+  /* intersect algos_ranking with the supported ones keeping the ranked order */
+  grpc_message_compression_algorithm
+      sorted_supported_algos[GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT];
+  size_t algos_supported_idx = 0;
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(algos_ranking); i++) {
+    const grpc_message_compression_algorithm alg = algos_ranking[i];
+    for (size_t j = 0; j < num_supported; j++) {
+      if (GPR_BITGET(accepted_encodings, alg) == 1) {
+        /* if \a alg in supported */
+        sorted_supported_algos[algos_supported_idx++] = alg;
+        break;
+      }
+    }
+    if (algos_supported_idx == num_supported) break;
+  }
+
+  switch (level) {
+    case GRPC_COMPRESS_LEVEL_NONE:
+      abort(); /* should have been handled already */
+    case GRPC_COMPRESS_LEVEL_LOW:
+      return sorted_supported_algos[0];
+    case GRPC_COMPRESS_LEVEL_MED:
+      return sorted_supported_algos[num_supported / 2];
+    case GRPC_COMPRESS_LEVEL_HIGH:
+      return sorted_supported_algos[num_supported - 1];
+    default:
+      abort();
+  };
+}
+
+int grpc_message_compression_algorithm_parse(
+    grpc_slice value, grpc_message_compression_algorithm* algorithm) {
+  if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_IDENTITY)) {
+    *algorithm = GRPC_MESSAGE_COMPRESS_NONE;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_DEFLATE)) {
+    *algorithm = GRPC_MESSAGE_COMPRESS_DEFLATE;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_GZIP)) {
+    *algorithm = GRPC_MESSAGE_COMPRESS_GZIP;
+    return 1;
+  } else {
+    return 0;
+  }
+  return 0;
+}
+
+/* Interfaces for stream compression. */
+
+int grpc_stream_compression_algorithm_parse(
+    grpc_slice value, grpc_stream_compression_algorithm* algorithm) {
+  if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_IDENTITY)) {
+    *algorithm = GRPC_STREAM_COMPRESS_NONE;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_GZIP)) {
+    *algorithm = GRPC_STREAM_COMPRESS_GZIP;
+    return 1;
+  } else {
+    return 0;
+  }
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.h
new file mode 100644
index 0000000..49afb94
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/compression_internal.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
+#define GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/compression_types.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  GRPC_MESSAGE_COMPRESS_NONE = 0,
+  GRPC_MESSAGE_COMPRESS_DEFLATE,
+  GRPC_MESSAGE_COMPRESS_GZIP,
+  /* TODO(ctiller): snappy */
+  GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT
+} grpc_message_compression_algorithm;
+
+/** Stream compression algorithms supported by gRPC */
+typedef enum {
+  GRPC_STREAM_COMPRESS_NONE = 0,
+  GRPC_STREAM_COMPRESS_GZIP,
+  GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT
+} grpc_stream_compression_algorithm;
+
+/* Interfaces performing transformation between compression algorithms and
+ * levels. */
+
+grpc_message_compression_algorithm
+grpc_compression_algorithm_to_message_compression_algorithm(
+    grpc_compression_algorithm algo);
+
+grpc_stream_compression_algorithm
+grpc_compression_algorithm_to_stream_compression_algorithm(
+    grpc_compression_algorithm algo);
+
+uint32_t grpc_compression_bitset_to_message_bitset(uint32_t bitset);
+
+uint32_t grpc_compression_bitset_to_stream_bitset(uint32_t bitset);
+
+uint32_t grpc_compression_bitset_from_message_stream_compression_bitset(
+    uint32_t message_bitset, uint32_t stream_bitset);
+
+int grpc_compression_algorithm_from_message_stream_compression_algorithm(
+    grpc_compression_algorithm* algorithm,
+    grpc_message_compression_algorithm message_algorithm,
+    grpc_stream_compression_algorithm stream_algorithm);
+
+/* Interfaces for message compression. */
+
+int grpc_message_compression_algorithm_name(
+    grpc_message_compression_algorithm algorithm, const char** name);
+
+grpc_message_compression_algorithm grpc_message_compression_algorithm_for_level(
+    grpc_compression_level level, uint32_t accepted_encodings);
+
+int grpc_message_compression_algorithm_parse(
+    grpc_slice value, grpc_message_compression_algorithm* algorithm);
+
+/* Interfaces for stream compression. */
+
+int grpc_stream_compression_algorithm_parse(
+    grpc_slice value, grpc_stream_compression_algorithm* algorithm);
+
+#ifdef __cplusplus
+}
+#endif
+
+inline int grpc_compression_options_is_algorithm_enabled_internal(
+    const grpc_compression_options* opts,
+    grpc_compression_algorithm algorithm) {
+  return GPR_BITGET(opts->enabled_algorithms_bitset, algorithm);
+}
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_COMPRESSION_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.cc
new file mode 100644
index 0000000..7faa1dc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.cc	
@@ -0,0 +1,188 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/compression/message_compress.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <zlib.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+
+#define OUTPUT_BLOCK_SIZE 1024
+
+static int zlib_body(z_stream* zs, grpc_slice_buffer* input,
+                     grpc_slice_buffer* output,
+                     int (*flate)(z_stream* zs, int flush)) {
+  int r;
+  int flush;
+  size_t i;
+  grpc_slice outbuf = GRPC_SLICE_MALLOC(OUTPUT_BLOCK_SIZE);
+  const uInt uint_max = ~static_cast<uInt>(0);
+
+  GPR_ASSERT(GRPC_SLICE_LENGTH(outbuf) <= uint_max);
+  zs->avail_out = static_cast<uInt> GRPC_SLICE_LENGTH(outbuf);
+  zs->next_out = GRPC_SLICE_START_PTR(outbuf);
+  flush = Z_NO_FLUSH;
+  for (i = 0; i < input->count; i++) {
+    if (i == input->count - 1) flush = Z_FINISH;
+    GPR_ASSERT(GRPC_SLICE_LENGTH(input->slices[i]) <= uint_max);
+    zs->avail_in = static_cast<uInt> GRPC_SLICE_LENGTH(input->slices[i]);
+    zs->next_in = GRPC_SLICE_START_PTR(input->slices[i]);
+    do {
+      if (zs->avail_out == 0) {
+        grpc_slice_buffer_add_indexed(output, outbuf);
+        outbuf = GRPC_SLICE_MALLOC(OUTPUT_BLOCK_SIZE);
+        GPR_ASSERT(GRPC_SLICE_LENGTH(outbuf) <= uint_max);
+        zs->avail_out = static_cast<uInt> GRPC_SLICE_LENGTH(outbuf);
+        zs->next_out = GRPC_SLICE_START_PTR(outbuf);
+      }
+      r = flate(zs, flush);
+      if (r < 0 && r != Z_BUF_ERROR /* not fatal */) {
+        gpr_log(GPR_INFO, "zlib error (%d)", r);
+        goto error;
+      }
+    } while (zs->avail_out == 0);
+    if (zs->avail_in) {
+      gpr_log(GPR_INFO, "zlib: not all input consumed");
+      goto error;
+    }
+  }
+
+  GPR_ASSERT(outbuf.refcount);
+  outbuf.data.refcounted.length -= zs->avail_out;
+  grpc_slice_buffer_add_indexed(output, outbuf);
+
+  return 1;
+
+error:
+  grpc_slice_unref_internal(outbuf);
+  return 0;
+}
+
+static void* zalloc_gpr(void* /*opaque*/, unsigned int items,
+                        unsigned int size) {
+  return gpr_malloc(items * size);
+}
+
+static void zfree_gpr(void* /*opaque*/, void* address) { gpr_free(address); }
+
+static int zlib_compress(grpc_slice_buffer* input, grpc_slice_buffer* output,
+                         int gzip) {
+  z_stream zs;
+  int r;
+  size_t i;
+  size_t count_before = output->count;
+  size_t length_before = output->length;
+  memset(&zs, 0, sizeof(zs));
+  zs.zalloc = zalloc_gpr;
+  zs.zfree = zfree_gpr;
+  r = deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 15 | (gzip ? 16 : 0),
+                   8, Z_DEFAULT_STRATEGY);
+  GPR_ASSERT(r == Z_OK);
+  r = zlib_body(&zs, input, output, deflate) && output->length < input->length;
+  if (!r) {
+    for (i = count_before; i < output->count; i++) {
+      grpc_slice_unref_internal(output->slices[i]);
+    }
+    output->count = count_before;
+    output->length = length_before;
+  }
+  deflateEnd(&zs);
+  return r;
+}
+
+static int zlib_decompress(grpc_slice_buffer* input, grpc_slice_buffer* output,
+                           int gzip) {
+  z_stream zs;
+  int r;
+  size_t i;
+  size_t count_before = output->count;
+  size_t length_before = output->length;
+  memset(&zs, 0, sizeof(zs));
+  zs.zalloc = zalloc_gpr;
+  zs.zfree = zfree_gpr;
+  r = inflateInit2(&zs, 15 | (gzip ? 16 : 0));
+  GPR_ASSERT(r == Z_OK);
+  r = zlib_body(&zs, input, output, inflate);
+  if (!r) {
+    for (i = count_before; i < output->count; i++) {
+      grpc_slice_unref_internal(output->slices[i]);
+    }
+    output->count = count_before;
+    output->length = length_before;
+  }
+  inflateEnd(&zs);
+  return r;
+}
+
+static int copy(grpc_slice_buffer* input, grpc_slice_buffer* output) {
+  size_t i;
+  for (i = 0; i < input->count; i++) {
+    grpc_slice_buffer_add(output, grpc_slice_ref_internal(input->slices[i]));
+  }
+  return 1;
+}
+
+static int compress_inner(grpc_message_compression_algorithm algorithm,
+                          grpc_slice_buffer* input, grpc_slice_buffer* output) {
+  switch (algorithm) {
+    case GRPC_MESSAGE_COMPRESS_NONE:
+      /* the fallback path always needs to be send uncompressed: we simply
+         rely on that here */
+      return 0;
+    case GRPC_MESSAGE_COMPRESS_DEFLATE:
+      return zlib_compress(input, output, 0);
+    case GRPC_MESSAGE_COMPRESS_GZIP:
+      return zlib_compress(input, output, 1);
+    case GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT:
+      break;
+  }
+  gpr_log(GPR_ERROR, "invalid compression algorithm %d", algorithm);
+  return 0;
+}
+
+int grpc_msg_compress(grpc_message_compression_algorithm algorithm,
+                      grpc_slice_buffer* input, grpc_slice_buffer* output) {
+  if (!compress_inner(algorithm, input, output)) {
+    copy(input, output);
+    return 0;
+  }
+  return 1;
+}
+
+int grpc_msg_decompress(grpc_message_compression_algorithm algorithm,
+                        grpc_slice_buffer* input, grpc_slice_buffer* output) {
+  switch (algorithm) {
+    case GRPC_MESSAGE_COMPRESS_NONE:
+      return copy(input, output);
+    case GRPC_MESSAGE_COMPRESS_DEFLATE:
+      return zlib_decompress(input, output, 0);
+    case GRPC_MESSAGE_COMPRESS_GZIP:
+      return zlib_decompress(input, output, 1);
+    case GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT:
+      break;
+  }
+  gpr_log(GPR_ERROR, "invalid compression algorithm %d", algorithm);
+  return 0;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.h
new file mode 100644
index 0000000..91654e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/message_compress.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
+#define GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/compression/compression_internal.h"
+
+/* compress 'input' to 'output' using 'algorithm'.
+   On success, appends compressed slices to output and returns 1.
+   On failure, appends uncompressed slices to output and returns 0. */
+int grpc_msg_compress(grpc_message_compression_algorithm algorithm,
+                      grpc_slice_buffer* input, grpc_slice_buffer* output);
+
+/* decompress 'input' to 'output' using 'algorithm'.
+   On success, appends slices to output and returns 1.
+   On failure, output is unchanged, and returns 0. */
+int grpc_msg_decompress(grpc_message_compression_algorithm algorithm,
+                        grpc_slice_buffer* input, grpc_slice_buffer* output);
+
+#endif /* GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.cc
new file mode 100644
index 0000000..e085798
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.cc	
@@ -0,0 +1,80 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/compression/stream_compression_gzip.h"
+#include "src/core/lib/slice/slice_utils.h"
+
+extern const grpc_stream_compression_vtable
+    grpc_stream_compression_identity_vtable;
+
+bool grpc_stream_compress(grpc_stream_compression_context* ctx,
+                          grpc_slice_buffer* in, grpc_slice_buffer* out,
+                          size_t* output_size, size_t max_output_size,
+                          grpc_stream_compression_flush flush) {
+  return ctx->vtable->compress(ctx, in, out, output_size, max_output_size,
+                               flush);
+}
+
+bool grpc_stream_decompress(grpc_stream_compression_context* ctx,
+                            grpc_slice_buffer* in, grpc_slice_buffer* out,
+                            size_t* output_size, size_t max_output_size,
+                            bool* end_of_context) {
+  return ctx->vtable->decompress(ctx, in, out, output_size, max_output_size,
+                                 end_of_context);
+}
+
+grpc_stream_compression_context* grpc_stream_compression_context_create(
+    grpc_stream_compression_method method) {
+  switch (method) {
+    case GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS:
+    case GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS:
+      return grpc_stream_compression_identity_vtable.context_create(method);
+    case GRPC_STREAM_COMPRESSION_GZIP_COMPRESS:
+    case GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS:
+      return grpc_stream_compression_gzip_vtable.context_create(method);
+    default:
+      gpr_log(GPR_ERROR, "Unknown stream compression method: %d", method);
+      return nullptr;
+  }
+}
+
+void grpc_stream_compression_context_destroy(
+    grpc_stream_compression_context* ctx) {
+  ctx->vtable->context_destroy(ctx);
+}
+
+int grpc_stream_compression_method_parse(
+    grpc_slice value, bool is_compress,
+    grpc_stream_compression_method* method) {
+  if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_IDENTITY)) {
+    *method = is_compress ? GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS
+                          : GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+    return 1;
+  } else if (grpc_slice_eq_static_interned(value, GRPC_MDSTR_GZIP)) {
+    *method = is_compress ? GRPC_STREAM_COMPRESSION_GZIP_COMPRESS
+                          : GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS;
+    return 1;
+  } else {
+    return 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.h
new file mode 100644
index 0000000..7328c3e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression.h	
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/slice_buffer.h>
+#include <zlib.h>
+
+#include "src/core/lib/transport/static_metadata.h"
+
+typedef struct grpc_stream_compression_vtable grpc_stream_compression_vtable;
+
+/* Stream compression/decompression context */
+typedef struct grpc_stream_compression_context {
+  const grpc_stream_compression_vtable* vtable;
+} grpc_stream_compression_context;
+
+typedef enum grpc_stream_compression_method {
+  GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS = 0,
+  GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_COMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_METHOD_COUNT
+} grpc_stream_compression_method;
+
+typedef enum grpc_stream_compression_flush {
+  GRPC_STREAM_COMPRESSION_FLUSH_NONE = 0,
+  GRPC_STREAM_COMPRESSION_FLUSH_SYNC,
+  GRPC_STREAM_COMPRESSION_FLUSH_FINISH,
+  GRPC_STREAM_COMPRESSION_FLUSH_COUNT
+} grpc_stream_compression_flush;
+
+struct grpc_stream_compression_vtable {
+  bool (*compress)(grpc_stream_compression_context* ctx, grpc_slice_buffer* in,
+                   grpc_slice_buffer* out, size_t* output_size,
+                   size_t max_output_size, grpc_stream_compression_flush flush);
+  bool (*decompress)(grpc_stream_compression_context* ctx,
+                     grpc_slice_buffer* in, grpc_slice_buffer* out,
+                     size_t* output_size, size_t max_output_size,
+                     bool* end_of_context);
+  grpc_stream_compression_context* (*context_create)(
+      grpc_stream_compression_method method);
+  void (*context_destroy)(grpc_stream_compression_context* ctx);
+};
+
+/**
+ * Compress bytes provided in \a in with a given context, with an optional flush
+ * at the end of compression. Emits at most \a max_output_size compressed bytes
+ * into \a out. If all the bytes in input buffer \a in are depleted and \a flush
+ * is not GRPC_STREAM_COMPRESSION_FLUSH_NONE, the corresponding flush method is
+ * executed. The total number of bytes emitted is outputted in \a output_size.
+ *
+ * A SYNC flush indicates that the entire messages in \a in can be decompressed
+ * from \a out. A FINISH flush implies a SYNC flush, and that any further
+ * compression will not be dependent on the state of the current context and any
+ * previous compressed bytes. It allows corresponding decompression context to
+ * be dropped when reaching this boundary.
+ */
+bool grpc_stream_compress(grpc_stream_compression_context* ctx,
+                          grpc_slice_buffer* in, grpc_slice_buffer* out,
+                          size_t* output_size, size_t max_output_size,
+                          grpc_stream_compression_flush flush);
+
+/**
+ * Decompress bytes provided in \a in with a given context. Emits at most \a
+ * max_output_size decompressed bytes into \a out. If decompression process
+ * reached the end of a gzip stream, \a end_of_context is set to true; otherwise
+ * it is set to false. The total number of bytes emitted is outputted in \a
+ * output_size.
+ */
+bool grpc_stream_decompress(grpc_stream_compression_context* ctx,
+                            grpc_slice_buffer* in, grpc_slice_buffer* out,
+                            size_t* output_size, size_t max_output_size,
+                            bool* end_of_context);
+
+/**
+ * Creates a stream compression context. \a pending_bytes_buffer is the input
+ * buffer for compression/decompression operations. \a method specifies whether
+ * the context is for compression or decompression.
+ */
+grpc_stream_compression_context* grpc_stream_compression_context_create(
+    grpc_stream_compression_method method);
+
+/**
+ * Destroys a stream compression context.
+ */
+void grpc_stream_compression_context_destroy(
+    grpc_stream_compression_context* ctx);
+
+/**
+ * Parse stream compression method based on algorithm name
+ */
+int grpc_stream_compression_method_parse(
+    grpc_slice value, bool is_compress, grpc_stream_compression_method* method);
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.cc
new file mode 100644
index 0000000..452b22b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.cc	
@@ -0,0 +1,230 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression_gzip.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+#define OUTPUT_BLOCK_SIZE (1024)
+
+typedef struct grpc_stream_compression_context_gzip {
+  grpc_stream_compression_context base;
+
+  z_stream zs;
+  int (*flate)(z_stream* zs, int flush);
+} grpc_stream_compression_context_gzip;
+
+static bool gzip_flate(grpc_stream_compression_context_gzip* ctx,
+                       grpc_slice_buffer* in, grpc_slice_buffer* out,
+                       size_t* output_size, size_t max_output_size, int flush,
+                       bool* end_of_context) {
+  GPR_ASSERT(flush == 0 || flush == Z_SYNC_FLUSH || flush == Z_FINISH);
+  /* Full flush is not allowed when inflating. */
+  GPR_ASSERT(!(ctx->flate == inflate && (flush == Z_FINISH)));
+
+  grpc_core::ExecCtx exec_ctx;
+  int r;
+  bool eoc = false;
+  size_t original_max_output_size = max_output_size;
+  while (max_output_size > 0 && (in->length > 0 || flush) && !eoc) {
+    size_t slice_size = max_output_size < OUTPUT_BLOCK_SIZE ? max_output_size
+                                                            : OUTPUT_BLOCK_SIZE;
+    grpc_slice slice_out = GRPC_SLICE_MALLOC(slice_size);
+    ctx->zs.avail_out = static_cast<uInt>(slice_size);
+    ctx->zs.next_out = GRPC_SLICE_START_PTR(slice_out);
+    while (ctx->zs.avail_out > 0 && in->length > 0 && !eoc) {
+      grpc_slice* slice = grpc_slice_buffer_peek_first(in);
+      ctx->zs.avail_in = static_cast<uInt> GRPC_SLICE_LENGTH(*slice);
+      ctx->zs.next_in = GRPC_SLICE_START_PTR(*slice);
+      r = ctx->flate(&ctx->zs, Z_NO_FLUSH);
+      if (r < 0 && r != Z_BUF_ERROR) {
+        gpr_log(GPR_ERROR, "zlib error (%d)", r);
+        grpc_slice_unref_internal(slice_out);
+        grpc_slice_buffer_remove_first(in);
+        return false;
+      } else if (r == Z_STREAM_END && ctx->flate == inflate) {
+        eoc = true;
+      }
+      if (ctx->zs.avail_in > 0) {
+        grpc_slice_buffer_sub_first(
+            in, GRPC_SLICE_LENGTH(*slice) - ctx->zs.avail_in,
+            GRPC_SLICE_LENGTH(*slice));
+      } else {
+        grpc_slice_buffer_remove_first(in);
+      }
+    }
+    if (flush != 0 && ctx->zs.avail_out > 0 && !eoc) {
+      GPR_ASSERT(in->length == 0);
+      r = ctx->flate(&ctx->zs, flush);
+      if (flush == Z_SYNC_FLUSH) {
+        switch (r) {
+          case Z_OK:
+            /* Maybe flush is not complete; just made some partial progress. */
+            if (ctx->zs.avail_out > 0) {
+              flush = 0;
+            }
+            break;
+          case Z_BUF_ERROR:
+          case Z_STREAM_END:
+            flush = 0;
+            break;
+          default:
+            gpr_log(GPR_ERROR, "zlib error (%d)", r);
+            grpc_slice_unref_internal(slice_out);
+
+            return false;
+        }
+      } else if (flush == Z_FINISH) {
+        switch (r) {
+          case Z_OK:
+          case Z_BUF_ERROR:
+            /* Wait for the next loop to assign additional output space. */
+            GPR_ASSERT(ctx->zs.avail_out == 0);
+            break;
+          case Z_STREAM_END:
+            flush = 0;
+            break;
+          default:
+            gpr_log(GPR_ERROR, "zlib error (%d)", r);
+            grpc_slice_unref_internal(slice_out);
+
+            return false;
+        }
+      }
+    }
+
+    if (ctx->zs.avail_out == 0) {
+      grpc_slice_buffer_add(out, slice_out);
+    } else if (ctx->zs.avail_out < slice_size) {
+      size_t len = GRPC_SLICE_LENGTH(slice_out);
+      GRPC_SLICE_SET_LENGTH(slice_out, len - ctx->zs.avail_out);
+      grpc_slice_buffer_add(out, slice_out);
+    } else {
+      grpc_slice_unref_internal(slice_out);
+    }
+    max_output_size -= (slice_size - ctx->zs.avail_out);
+  }
+
+  if (end_of_context) {
+    *end_of_context = eoc;
+  }
+  if (output_size) {
+    *output_size = original_max_output_size - max_output_size;
+  }
+  return true;
+}
+
+static bool grpc_stream_compress_gzip(grpc_stream_compression_context* ctx,
+                                      grpc_slice_buffer* in,
+                                      grpc_slice_buffer* out,
+                                      size_t* output_size,
+                                      size_t max_output_size,
+                                      grpc_stream_compression_flush flush) {
+  if (ctx == nullptr) {
+    return false;
+  }
+  grpc_stream_compression_context_gzip* gzip_ctx =
+      reinterpret_cast<grpc_stream_compression_context_gzip*>(ctx);
+  GPR_ASSERT(gzip_ctx->flate == deflate);
+  int gzip_flush;
+  switch (flush) {
+    case GRPC_STREAM_COMPRESSION_FLUSH_NONE:
+      gzip_flush = 0;
+      break;
+    case GRPC_STREAM_COMPRESSION_FLUSH_SYNC:
+      gzip_flush = Z_SYNC_FLUSH;
+      break;
+    case GRPC_STREAM_COMPRESSION_FLUSH_FINISH:
+      gzip_flush = Z_FINISH;
+      break;
+    default:
+      gzip_flush = 0;
+  }
+  return gzip_flate(gzip_ctx, in, out, output_size, max_output_size, gzip_flush,
+                    nullptr);
+}
+
+static bool grpc_stream_decompress_gzip(grpc_stream_compression_context* ctx,
+                                        grpc_slice_buffer* in,
+                                        grpc_slice_buffer* out,
+                                        size_t* output_size,
+                                        size_t max_output_size,
+                                        bool* end_of_context) {
+  if (ctx == nullptr) {
+    return false;
+  }
+  grpc_stream_compression_context_gzip* gzip_ctx =
+      reinterpret_cast<grpc_stream_compression_context_gzip*>(ctx);
+  GPR_ASSERT(gzip_ctx->flate == inflate);
+  return gzip_flate(gzip_ctx, in, out, output_size, max_output_size,
+                    Z_SYNC_FLUSH, end_of_context);
+}
+
+static grpc_stream_compression_context*
+grpc_stream_compression_context_create_gzip(
+    grpc_stream_compression_method method) {
+  GPR_ASSERT(method == GRPC_STREAM_COMPRESSION_GZIP_COMPRESS ||
+             method == GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
+  grpc_stream_compression_context_gzip* gzip_ctx =
+      static_cast<grpc_stream_compression_context_gzip*>(
+          gpr_zalloc(sizeof(grpc_stream_compression_context_gzip)));
+  int r;
+  if (gzip_ctx == nullptr) {
+    return nullptr;
+  }
+  if (method == GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS) {
+    r = inflateInit2(&gzip_ctx->zs, 0x1F);
+    gzip_ctx->flate = inflate;
+  } else {
+    r = deflateInit2(&gzip_ctx->zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 0x1F, 8,
+                     Z_DEFAULT_STRATEGY);
+    gzip_ctx->flate = deflate;
+  }
+  if (r != Z_OK) {
+    gpr_free(gzip_ctx);
+    return nullptr;
+  }
+
+  gzip_ctx->base.vtable = &grpc_stream_compression_gzip_vtable;
+  return reinterpret_cast<grpc_stream_compression_context*>(gzip_ctx);
+}
+
+static void grpc_stream_compression_context_destroy_gzip(
+    grpc_stream_compression_context* ctx) {
+  if (ctx == nullptr) {
+    return;
+  }
+  grpc_stream_compression_context_gzip* gzip_ctx =
+      reinterpret_cast<grpc_stream_compression_context_gzip*>(ctx);
+  if (gzip_ctx->flate == inflate) {
+    inflateEnd(&gzip_ctx->zs);
+  } else {
+    deflateEnd(&gzip_ctx->zs);
+  }
+  gpr_free(ctx);
+}
+
+const grpc_stream_compression_vtable grpc_stream_compression_gzip_vtable = {
+    grpc_stream_compress_gzip, grpc_stream_decompress_gzip,
+    grpc_stream_compression_context_create_gzip,
+    grpc_stream_compression_context_destroy_gzip};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.h
new file mode 100644
index 0000000..740f097
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_gzip.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+
+extern const grpc_stream_compression_vtable grpc_stream_compression_gzip_vtable;
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.cc
new file mode 100644
index 0000000..d5e3aff
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.cc	
@@ -0,0 +1,92 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression_identity.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+#define OUTPUT_BLOCK_SIZE (1024)
+
+/* Singleton context used for all identity streams. */
+static grpc_stream_compression_context identity_ctx = {
+    &grpc_stream_compression_identity_vtable};
+
+static void grpc_stream_compression_pass_through(grpc_slice_buffer* in,
+                                                 grpc_slice_buffer* out,
+                                                 size_t* output_size,
+                                                 size_t max_output_size) {
+  if (max_output_size >= in->length) {
+    if (output_size) {
+      *output_size = in->length;
+    }
+    grpc_slice_buffer_move_into(in, out);
+  } else {
+    if (output_size) {
+      *output_size = max_output_size;
+    }
+    grpc_slice_buffer_move_first(in, max_output_size, out);
+  }
+}
+
+static bool grpc_stream_compress_identity(
+    grpc_stream_compression_context* ctx, grpc_slice_buffer* in,
+    grpc_slice_buffer* out, size_t* output_size, size_t max_output_size,
+    grpc_stream_compression_flush /*flush*/) {
+  if (ctx == nullptr) {
+    return false;
+  }
+  grpc_stream_compression_pass_through(in, out, output_size, max_output_size);
+  return true;
+}
+
+static bool grpc_stream_decompress_identity(
+    grpc_stream_compression_context* ctx, grpc_slice_buffer* in,
+    grpc_slice_buffer* out, size_t* output_size, size_t max_output_size,
+    bool* end_of_context) {
+  if (ctx == nullptr) {
+    return false;
+  }
+  grpc_stream_compression_pass_through(in, out, output_size, max_output_size);
+  if (end_of_context) {
+    *end_of_context = false;
+  }
+  return true;
+}
+
+static grpc_stream_compression_context*
+grpc_stream_compression_context_create_identity(
+    grpc_stream_compression_method method) {
+  GPR_ASSERT(method == GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS ||
+             method == GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS);
+  /* No context needed in this case. Use fake context instead. */
+  return &identity_ctx;
+}
+
+static void grpc_stream_compression_context_destroy_identity(
+    grpc_stream_compression_context* /*ctx*/) {
+  return;
+}
+
+const grpc_stream_compression_vtable grpc_stream_compression_identity_vtable = {
+    grpc_stream_compress_identity, grpc_stream_decompress_identity,
+    grpc_stream_compression_context_create_identity,
+    grpc_stream_compression_context_destroy_identity};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.h
new file mode 100644
index 0000000..cc77b63
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/compression/stream_compression_identity.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/compression/stream_compression.h"
+
+extern const grpc_stream_compression_vtable
+    grpc_stream_compression_identity_vtable;
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.cc
new file mode 100644
index 0000000..d8ddf03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.cc	
@@ -0,0 +1,178 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/stats.h"
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+
+grpc_stats_data* grpc_stats_per_cpu_storage = nullptr;
+static size_t g_num_cores;
+
+void grpc_stats_init(void) {
+  g_num_cores = GPR_MAX(1, gpr_cpu_num_cores());
+  grpc_stats_per_cpu_storage = static_cast<grpc_stats_data*>(
+      gpr_zalloc(sizeof(grpc_stats_data) * g_num_cores));
+}
+
+void grpc_stats_shutdown(void) { gpr_free(grpc_stats_per_cpu_storage); }
+
+void grpc_stats_collect(grpc_stats_data* output) {
+  memset(output, 0, sizeof(*output));
+  for (size_t core = 0; core < g_num_cores; core++) {
+    for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+      output->counters[i] += gpr_atm_no_barrier_load(
+          &grpc_stats_per_cpu_storage[core].counters[i]);
+    }
+    for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_BUCKETS; i++) {
+      output->histograms[i] += gpr_atm_no_barrier_load(
+          &grpc_stats_per_cpu_storage[core].histograms[i]);
+    }
+  }
+}
+
+void grpc_stats_diff(const grpc_stats_data* b, const grpc_stats_data* a,
+                     grpc_stats_data* c) {
+  for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    c->counters[i] = b->counters[i] - a->counters[i];
+  }
+  for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_BUCKETS; i++) {
+    c->histograms[i] = b->histograms[i] - a->histograms[i];
+  }
+}
+
+int grpc_stats_histo_find_bucket_slow(int value, const int* table,
+                                      int table_size) {
+  GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS();
+  const int* const start = table;
+  while (table_size > 0) {
+    int step = table_size / 2;
+    const int* it = table + step;
+    if (value >= *it) {
+      table = it + 1;
+      table_size -= step + 1;
+    } else {
+      table_size = step;
+    }
+  }
+  return static_cast<int>(table - start) - 1;
+}
+
+size_t grpc_stats_histo_count(const grpc_stats_data* stats,
+                              grpc_stats_histograms histogram) {
+  size_t sum = 0;
+  for (int i = 0; i < grpc_stats_histo_buckets[histogram]; i++) {
+    sum += static_cast<size_t>(
+        stats->histograms[grpc_stats_histo_start[histogram] + i]);
+  }
+  return sum;
+}
+
+static double threshold_for_count_below(const gpr_atm* bucket_counts,
+                                        const int* bucket_boundaries,
+                                        int num_buckets, double count_below) {
+  double count_so_far;
+  double lower_bound;
+  double upper_bound;
+  int lower_idx;
+  int upper_idx;
+
+  /* find the lowest bucket that gets us above count_below */
+  count_so_far = 0.0;
+  for (lower_idx = 0; lower_idx < num_buckets; lower_idx++) {
+    count_so_far += static_cast<double>(bucket_counts[lower_idx]);
+    if (count_so_far >= count_below) {
+      break;
+    }
+  }
+  if (count_so_far == count_below) {
+    /* this bucket hits the threshold exactly... we should be midway through
+       any run of zero values following the bucket */
+    for (upper_idx = lower_idx + 1; upper_idx < num_buckets; upper_idx++) {
+      if (bucket_counts[upper_idx]) {
+        break;
+      }
+    }
+    return (bucket_boundaries[lower_idx] + bucket_boundaries[upper_idx]) / 2.0;
+  } else {
+    /* treat values as uniform throughout the bucket, and find where this value
+       should lie */
+    lower_bound = bucket_boundaries[lower_idx];
+    upper_bound = bucket_boundaries[lower_idx + 1];
+    return upper_bound - (upper_bound - lower_bound) *
+                             (count_so_far - count_below) /
+                             static_cast<double>(bucket_counts[lower_idx]);
+  }
+}
+
+double grpc_stats_histo_percentile(const grpc_stats_data* stats,
+                                   grpc_stats_histograms histogram,
+                                   double percentile) {
+  size_t count = grpc_stats_histo_count(stats, histogram);
+  if (count == 0) return 0.0;
+  return threshold_for_count_below(
+      stats->histograms + grpc_stats_histo_start[histogram],
+      grpc_stats_histo_bucket_boundaries[histogram],
+      grpc_stats_histo_buckets[histogram],
+      static_cast<double>(count) * percentile / 100.0);
+}
+
+char* grpc_stats_data_as_json(const grpc_stats_data* data) {
+  gpr_strvec v;
+  char* tmp;
+  bool is_first = true;
+  gpr_strvec_init(&v);
+  gpr_strvec_add(&v, gpr_strdup("{"));
+  for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    gpr_asprintf(&tmp, "%s\"%s\": %" PRIdPTR, is_first ? "" : ", ",
+                 grpc_stats_counter_name[i], data->counters[i]);
+    gpr_strvec_add(&v, tmp);
+    is_first = false;
+  }
+  for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    gpr_asprintf(&tmp, "%s\"%s\": [", is_first ? "" : ", ",
+                 grpc_stats_histogram_name[i]);
+    gpr_strvec_add(&v, tmp);
+    for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
+      gpr_asprintf(&tmp, "%s%" PRIdPTR, j == 0 ? "" : ",",
+                   data->histograms[grpc_stats_histo_start[i] + j]);
+      gpr_strvec_add(&v, tmp);
+    }
+    gpr_asprintf(&tmp, "], \"%s_bkt\": [", grpc_stats_histogram_name[i]);
+    gpr_strvec_add(&v, tmp);
+    for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
+      gpr_asprintf(&tmp, "%s%d", j == 0 ? "" : ",",
+                   grpc_stats_histo_bucket_boundaries[i][j]);
+      gpr_strvec_add(&v, tmp);
+    }
+    gpr_strvec_add(&v, gpr_strdup("]"));
+    is_first = false;
+  }
+  gpr_strvec_add(&v, gpr_strdup("}"));
+  tmp = gpr_strvec_flatten(&v, nullptr);
+  gpr_strvec_destroy(&v);
+  return tmp;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.h
new file mode 100644
index 0000000..9e88ad7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_H
+#define GRPC_CORE_LIB_DEBUG_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/stats_data.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef struct grpc_stats_data {
+  gpr_atm counters[GRPC_STATS_COUNTER_COUNT];
+  gpr_atm histograms[GRPC_STATS_HISTOGRAM_BUCKETS];
+} grpc_stats_data;
+
+extern grpc_stats_data* grpc_stats_per_cpu_storage;
+
+#define GRPC_THREAD_STATS_DATA() \
+  (&grpc_stats_per_cpu_storage[grpc_core::ExecCtx::Get()->starting_cpu()])
+
+/* Only collect stats if GRPC_COLLECT_STATS is defined or it is a debug build.
+ */
+#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)
+#define GRPC_STATS_INC_COUNTER(ctr) \
+  (gpr_atm_no_barrier_fetch_add(&GRPC_THREAD_STATS_DATA()->counters[(ctr)], 1))
+
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)                             \
+  (gpr_atm_no_barrier_fetch_add(                                               \
+      &GRPC_THREAD_STATS_DATA()->histograms[histogram##_FIRST_SLOT + (index)], \
+      1))
+#else /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+#define GRPC_STATS_INC_COUNTER(ctr)
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)
+#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+
+void grpc_stats_init(void);
+void grpc_stats_shutdown(void);
+void grpc_stats_collect(grpc_stats_data* output);
+// c = b-a
+void grpc_stats_diff(const grpc_stats_data* b, const grpc_stats_data* a,
+                     grpc_stats_data* c);
+char* grpc_stats_data_as_json(const grpc_stats_data* data);
+int grpc_stats_histo_find_bucket_slow(int value, const int* table,
+                                      int table_size);
+double grpc_stats_histo_percentile(const grpc_stats_data* data,
+                                   grpc_stats_histograms histogram,
+                                   double percentile);
+size_t grpc_stats_histo_count(const grpc_stats_data* data,
+                              grpc_stats_histograms histogram);
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.cc
new file mode 100644
index 0000000..f8c27db
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.cc	
@@ -0,0 +1,687 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_stats_data.py
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/debug/stats_data.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+const char* grpc_stats_counter_name[GRPC_STATS_COUNTER_COUNT] = {
+    "client_calls_created",
+    "server_calls_created",
+    "cqs_created",
+    "client_channels_created",
+    "client_subchannels_created",
+    "server_channels_created",
+    "syscall_poll",
+    "syscall_wait",
+    "pollset_kick",
+    "pollset_kicked_without_poller",
+    "pollset_kicked_again",
+    "pollset_kick_wakeup_fd",
+    "pollset_kick_wakeup_cv",
+    "pollset_kick_own_thread",
+    "syscall_epoll_ctl",
+    "pollset_fd_cache_hits",
+    "histogram_slow_lookups",
+    "syscall_write",
+    "syscall_read",
+    "tcp_backup_pollers_created",
+    "tcp_backup_poller_polls",
+    "http2_op_batches",
+    "http2_op_cancel",
+    "http2_op_send_initial_metadata",
+    "http2_op_send_message",
+    "http2_op_send_trailing_metadata",
+    "http2_op_recv_initial_metadata",
+    "http2_op_recv_message",
+    "http2_op_recv_trailing_metadata",
+    "http2_settings_writes",
+    "http2_pings_sent",
+    "http2_writes_begun",
+    "http2_writes_offloaded",
+    "http2_writes_continued",
+    "http2_partial_writes",
+    "http2_initiate_write_due_to_initial_write",
+    "http2_initiate_write_due_to_start_new_stream",
+    "http2_initiate_write_due_to_send_message",
+    "http2_initiate_write_due_to_send_initial_metadata",
+    "http2_initiate_write_due_to_send_trailing_metadata",
+    "http2_initiate_write_due_to_retry_send_ping",
+    "http2_initiate_write_due_to_continue_pings",
+    "http2_initiate_write_due_to_goaway_sent",
+    "http2_initiate_write_due_to_rst_stream",
+    "http2_initiate_write_due_to_close_from_api",
+    "http2_initiate_write_due_to_stream_flow_control",
+    "http2_initiate_write_due_to_transport_flow_control",
+    "http2_initiate_write_due_to_send_settings",
+    "http2_initiate_write_due_to_bdp_estimator_ping",
+    "http2_initiate_write_due_to_flow_control_unstalled_by_setting",
+    "http2_initiate_write_due_to_flow_control_unstalled_by_update",
+    "http2_initiate_write_due_to_application_ping",
+    "http2_initiate_write_due_to_keepalive_ping",
+    "http2_initiate_write_due_to_transport_flow_control_unstalled",
+    "http2_initiate_write_due_to_ping_response",
+    "http2_initiate_write_due_to_force_rst_stream",
+    "http2_spurious_writes_begun",
+    "hpack_recv_indexed",
+    "hpack_recv_lithdr_incidx",
+    "hpack_recv_lithdr_incidx_v",
+    "hpack_recv_lithdr_notidx",
+    "hpack_recv_lithdr_notidx_v",
+    "hpack_recv_lithdr_nvridx",
+    "hpack_recv_lithdr_nvridx_v",
+    "hpack_recv_uncompressed",
+    "hpack_recv_huffman",
+    "hpack_recv_binary",
+    "hpack_recv_binary_base64",
+    "hpack_send_indexed",
+    "hpack_send_lithdr_incidx",
+    "hpack_send_lithdr_incidx_v",
+    "hpack_send_lithdr_notidx",
+    "hpack_send_lithdr_notidx_v",
+    "hpack_send_lithdr_nvridx",
+    "hpack_send_lithdr_nvridx_v",
+    "hpack_send_uncompressed",
+    "hpack_send_huffman",
+    "hpack_send_binary",
+    "hpack_send_binary_base64",
+    "combiner_locks_initiated",
+    "combiner_locks_scheduled_items",
+    "combiner_locks_scheduled_final_items",
+    "combiner_locks_offloaded",
+    "call_combiner_locks_initiated",
+    "call_combiner_locks_scheduled_items",
+    "call_combiner_set_notify_on_cancel",
+    "call_combiner_cancelled",
+    "executor_scheduled_short_items",
+    "executor_scheduled_long_items",
+    "executor_scheduled_to_self",
+    "executor_wakeup_initiated",
+    "executor_queue_drained",
+    "executor_push_retries",
+    "server_requested_calls",
+    "server_slowpath_requests_queued",
+    "cq_ev_queue_trylock_failures",
+    "cq_ev_queue_trylock_successes",
+    "cq_ev_queue_transient_pop_failures",
+};
+const char* grpc_stats_counter_doc[GRPC_STATS_COUNTER_COUNT] = {
+    "Number of client side calls created by this process",
+    "Number of server side calls created by this process",
+    "Number of completion queues created",
+    "Number of client channels created",
+    "Number of client subchannels created",
+    "Number of server channels created",
+    "Number of polling syscalls (epoll_wait, poll, etc) made by this process",
+    "Number of sleeping syscalls made by this process",
+    "How many polling wakeups were performed by the process (only valid for "
+    "epoll1 right now)",
+    "How many times was a polling wakeup requested without an active poller "
+    "(only valid for epoll1 right now)",
+    "How many times was the same polling worker awoken repeatedly before "
+    "waking up (only valid for epoll1 right now)",
+    "How many times was an eventfd used as the wakeup vector for a polling "
+    "wakeup (only valid for epoll1 right now)",
+    "How many times was a condition variable used as the wakeup vector for a "
+    "polling wakeup (only valid for epoll1 right now)",
+    "How many times could a polling wakeup be satisfied by keeping the waking "
+    "thread awake? (only valid for epoll1 right now)",
+    "Number of epoll_ctl calls made (only valid for epollex right now)",
+    "Number of epoll_ctl calls skipped because the fd was cached as already "
+    "being added.  (only valid for epollex right now)",
+    "Number of times histogram increments went through the slow (binary "
+    "search) path",
+    "Number of write syscalls (or equivalent - eg sendmsg) made by this "
+    "process",
+    "Number of read syscalls (or equivalent - eg recvmsg) made by this process",
+    "Number of times a backup poller has been created (this can be expensive)",
+    "Number of polls performed on the backup poller",
+    "Number of batches received by HTTP2 transport",
+    "Number of cancelations received by HTTP2 transport",
+    "Number of batches containing send initial metadata",
+    "Number of batches containing send message",
+    "Number of batches containing send trailing metadata",
+    "Number of batches containing receive initial metadata",
+    "Number of batches containing receive message",
+    "Number of batches containing receive trailing metadata",
+    "Number of settings frames sent",
+    "Number of HTTP2 pings sent by process",
+    "Number of HTTP2 writes initiated",
+    "Number of HTTP2 writes offloaded to the executor from application threads",
+    "Number of HTTP2 writes that finished seeing more data needed to be "
+    "written",
+    "Number of HTTP2 writes that were made knowing there was still more data "
+    "to be written (we cap maximum write size to syscall_write)",
+    "Number of HTTP2 writes initiated due to 'initial_write'",
+    "Number of HTTP2 writes initiated due to 'start_new_stream'",
+    "Number of HTTP2 writes initiated due to 'send_message'",
+    "Number of HTTP2 writes initiated due to 'send_initial_metadata'",
+    "Number of HTTP2 writes initiated due to 'send_trailing_metadata'",
+    "Number of HTTP2 writes initiated due to 'retry_send_ping'",
+    "Number of HTTP2 writes initiated due to 'continue_pings'",
+    "Number of HTTP2 writes initiated due to 'goaway_sent'",
+    "Number of HTTP2 writes initiated due to 'rst_stream'",
+    "Number of HTTP2 writes initiated due to 'close_from_api'",
+    "Number of HTTP2 writes initiated due to 'stream_flow_control'",
+    "Number of HTTP2 writes initiated due to 'transport_flow_control'",
+    "Number of HTTP2 writes initiated due to 'send_settings'",
+    "Number of HTTP2 writes initiated due to 'bdp_estimator_ping'",
+    "Number of HTTP2 writes initiated due to "
+    "'flow_control_unstalled_by_setting'",
+    "Number of HTTP2 writes initiated due to "
+    "'flow_control_unstalled_by_update'",
+    "Number of HTTP2 writes initiated due to 'application_ping'",
+    "Number of HTTP2 writes initiated due to 'keepalive_ping'",
+    "Number of HTTP2 writes initiated due to "
+    "'transport_flow_control_unstalled'",
+    "Number of HTTP2 writes initiated due to 'ping_response'",
+    "Number of HTTP2 writes initiated due to 'force_rst_stream'",
+    "Number of HTTP2 writes initiated with nothing to write",
+    "Number of HPACK indexed fields received",
+    "Number of HPACK literal headers received with incremental indexing",
+    "Number of HPACK literal headers received with incremental indexing and "
+    "literal keys",
+    "Number of HPACK literal headers received with no indexing",
+    "Number of HPACK literal headers received with no indexing and literal "
+    "keys",
+    "Number of HPACK literal headers received with never-indexing",
+    "Number of HPACK literal headers received with never-indexing and literal "
+    "keys",
+    "Number of uncompressed strings received in metadata",
+    "Number of huffman encoded strings received in metadata",
+    "Number of binary strings received in metadata",
+    "Number of binary strings received encoded in base64 in metadata",
+    "Number of HPACK indexed fields sent",
+    "Number of HPACK literal headers sent with incremental indexing",
+    "Number of HPACK literal headers sent with incremental indexing and "
+    "literal keys",
+    "Number of HPACK literal headers sent with no indexing",
+    "Number of HPACK literal headers sent with no indexing and literal keys",
+    "Number of HPACK literal headers sent with never-indexing",
+    "Number of HPACK literal headers sent with never-indexing and literal keys",
+    "Number of uncompressed strings sent in metadata",
+    "Number of huffman encoded strings sent in metadata",
+    "Number of binary strings received in metadata",
+    "Number of binary strings received encoded in base64 in metadata",
+    "Number of combiner lock entries by process (first items queued to a "
+    "combiner)",
+    "Number of items scheduled against combiner locks",
+    "Number of final items scheduled against combiner locks",
+    "Number of combiner locks offloaded to different threads",
+    "Number of call combiner lock entries by process (first items queued to a "
+    "call combiner)",
+    "Number of items scheduled against call combiner locks",
+    "Number of times a cancellation callback was set on a call combiner",
+    "Number of times a call combiner was cancelled",
+    "Number of finite runtime closures scheduled against the executor (gRPC "
+    "thread pool)",
+    "Number of potentially infinite runtime closures scheduled against the "
+    "executor (gRPC thread pool)",
+    "Number of closures scheduled by the executor to the executor",
+    "Number of thread wakeups initiated within the executor",
+    "Number of times an executor queue was drained",
+    "Number of times we raced and were forced to retry pushing a closure to "
+    "the executor",
+    "How many calls were requested (not necessarily received) by the server",
+    "How many times was the server slow path taken (indicates too few "
+    "outstanding requests)",
+    "Number of lock (trylock) acquisition failures on completion queue event "
+    "queue. High value here indicates high contention on completion queues",
+    "Number of lock (trylock) acquisition successes on completion queue event "
+    "queue.",
+    "Number of times NULL was popped out of completion queue's event queue "
+    "even though the event queue was not empty",
+};
+const char* grpc_stats_histogram_name[GRPC_STATS_HISTOGRAM_COUNT] = {
+    "call_initial_size",
+    "poll_events_returned",
+    "tcp_write_size",
+    "tcp_write_iov_size",
+    "tcp_read_size",
+    "tcp_read_offer",
+    "tcp_read_offer_iov_size",
+    "http2_send_message_size",
+    "http2_send_initial_metadata_per_write",
+    "http2_send_message_per_write",
+    "http2_send_trailing_metadata_per_write",
+    "http2_send_flowctl_per_write",
+    "server_cqs_checked",
+};
+const char* grpc_stats_histogram_doc[GRPC_STATS_HISTOGRAM_COUNT] = {
+    "Initial size of the grpc_call arena created at call start",
+    "How many events are called for each syscall_poll",
+    "Number of bytes offered to each syscall_write",
+    "Number of byte segments offered to each syscall_write",
+    "Number of bytes received by each syscall_read",
+    "Number of bytes offered to each syscall_read",
+    "Number of byte segments offered to each syscall_read",
+    "Size of messages received by HTTP2 transport",
+    "Number of streams initiated written per TCP write",
+    "Number of streams whose payload was written per TCP write",
+    "Number of streams terminated per TCP write",
+    "Number of flow control updates written per TCP write",
+    "How many completion queues were checked looking for a CQ that had "
+    "requested the incoming call",
+};
+const int grpc_stats_table_0[65] = {
+    0,      1,      2,      3,      4,     5,     7,     9,     11,    14,
+    17,     21,     26,     32,     39,    47,    57,    68,    82,    98,
+    117,    140,    167,    199,    238,   284,   339,   404,   482,   575,
+    685,    816,    972,    1158,   1380,  1644,  1959,  2334,  2780,  3312,
+    3945,   4699,   5597,   6667,   7941,  9459,  11267, 13420, 15984, 19038,
+    22676,  27009,  32169,  38315,  45635, 54353, 64737, 77104, 91834, 109378,
+    130273, 155159, 184799, 220100, 262144};
+const uint8_t grpc_stats_table_1[124] = {
+    0,  0,  0,  1,  1,  1,  2,  2,  3,  3,  3,  4,  4,  5,  5,  6,  6,  6,
+    7,  7,  7,  8,  9,  9,  10, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15,
+    15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 22, 23, 24,
+    24, 25, 25, 26, 26, 26, 27, 27, 28, 29, 29, 30, 30, 30, 31, 31, 32, 33,
+    33, 34, 34, 34, 35, 35, 36, 37, 37, 37, 38, 38, 39, 39, 40, 40, 41, 41,
+    42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 48, 48, 49, 49, 50, 50,
+    51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 56, 56, 57, 57, 58, 58};
+const int grpc_stats_table_2[129] = {
+    0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   10,  11,  12,  13,  14,
+    15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  30,
+    32,  34,  36,  38,  40,  42,  44,  46,  48,  50,  52,  54,  56,  58,  60,
+    63,  66,  69,  72,  75,  78,  81,  84,  87,  90,  94,  98,  102, 106, 110,
+    114, 118, 122, 126, 131, 136, 141, 146, 151, 156, 162, 168, 174, 180, 186,
+    192, 199, 206, 213, 220, 228, 236, 244, 252, 260, 269, 278, 287, 297, 307,
+    317, 327, 338, 349, 360, 372, 384, 396, 409, 422, 436, 450, 464, 479, 494,
+    510, 526, 543, 560, 578, 596, 615, 634, 654, 674, 695, 717, 739, 762, 785,
+    809, 834, 859, 885, 912, 939, 967, 996, 1024};
+const uint8_t grpc_stats_table_3[166] = {
+    0,  0,  0,  1,  1,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  6,  7,  7,
+    8,  8,  9,  9,  10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 16,
+    17, 17, 18, 19, 19, 20, 21, 21, 22, 23, 23, 24, 25, 25, 26, 26, 27, 27, 28,
+    28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, 34, 35, 36, 36, 37, 38, 39,
+    40, 40, 41, 42, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 49, 50, 50, 51,
+    51, 52, 52, 53, 53, 54, 54, 55, 56, 57, 58, 59, 59, 60, 61, 62, 63, 63, 64,
+    65, 65, 66, 67, 67, 68, 69, 69, 70, 71, 71, 72, 72, 73, 73, 74, 75, 75, 76,
+    76, 77, 78, 79, 79, 80, 81, 82, 83, 84, 85, 85, 86, 87, 88, 88, 89, 90, 90,
+    91, 92, 92, 93, 94, 94, 95, 95, 96, 97, 97, 98, 98, 99};
+const int grpc_stats_table_4[65] = {
+    0,       1,       2,       3,       4,       6,       8,        11,
+    15,      20,      26,      34,      44,      57,      73,       94,
+    121,     155,     199,     255,     327,     419,     537,      688,
+    881,     1128,    1444,    1848,    2365,    3026,    3872,     4954,
+    6338,    8108,    10373,   13270,   16976,   21717,   27782,    35541,
+    45467,   58165,   74409,   95189,   121772,  155778,  199281,   254933,
+    326126,  417200,  533707,  682750,  873414,  1117323, 1429345,  1828502,
+    2339127, 2992348, 3827987, 4896985, 6264509, 8013925, 10251880, 13114801,
+    16777216};
+const uint8_t grpc_stats_table_5[87] = {
+    0,  0,  1,  1,  2,  3,  3,  4,  4,  5,  6,  6,  7,  8,  8,  9,  10, 11,
+    11, 12, 13, 13, 14, 15, 15, 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23,
+    24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 36,
+    36, 37, 38, 39, 39, 40, 41, 41, 42, 43, 44, 44, 45, 45, 46, 47, 48, 48,
+    49, 50, 51, 51, 52, 53, 53, 54, 55, 56, 56, 57, 58, 58, 59};
+const int grpc_stats_table_6[65] = {
+    0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   10,  11,  12,
+    14,  16,  18,  20,  22,  24,  27,  30,  33,  36,  39,  43,  47,
+    51,  56,  61,  66,  72,  78,  85,  92,  100, 109, 118, 128, 139,
+    151, 164, 178, 193, 209, 226, 244, 264, 285, 308, 333, 359, 387,
+    418, 451, 486, 524, 565, 609, 656, 707, 762, 821, 884, 952, 1024};
+const uint8_t grpc_stats_table_7[102] = {
+    0,  0,  0,  1,  1,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  6,
+    6,  7,  7,  7,  8,  8,  9,  9,  10, 11, 11, 12, 12, 13, 13, 14, 14,
+    14, 15, 15, 16, 16, 17, 17, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23,
+    23, 24, 24, 24, 25, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32,
+    32, 33, 33, 34, 35, 35, 36, 37, 37, 38, 38, 39, 39, 40, 40, 41, 41,
+    42, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 49, 50, 50, 51, 51};
+const int grpc_stats_table_8[9] = {0, 1, 2, 4, 7, 13, 23, 39, 64};
+const uint8_t grpc_stats_table_9[9] = {0, 0, 1, 2, 2, 3, 4, 4, 5};
+void grpc_stats_inc_call_initial_size(int value) {
+  value = GPR_CLAMP(value, 0, 262144);
+  if (value < 6) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4651092515166879744ull) {
+    int bucket =
+        grpc_stats_table_1[((_val.uint - 4618441417868443648ull) >> 49)] + 6;
+    _bkt.dbl = grpc_stats_table_0[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_0, 64));
+}
+void grpc_stats_inc_poll_events_returned(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 29) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4642789003353915392ull) {
+    int bucket =
+        grpc_stats_table_3[((_val.uint - 4628855992006737920ull) >> 47)] + 29;
+    _bkt.dbl = grpc_stats_table_2[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_2, 128));
+}
+void grpc_stats_inc_tcp_write_size(int value) {
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_write_iov_size(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_tcp_read_size(int value) {
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_read_offer(int value) {
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_OFFER, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_OFFER, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_read_offer_iov_size(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_message_size(int value) {
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_http2_send_initial_metadata_per_write(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_message_per_write(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_trailing_metadata_per_write(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_flowctl_per_write(int value) {
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_server_cqs_checked(int value) {
+  value = GPR_CLAMP(value, 0, 64);
+  if (value < 3) {
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4625196817309499392ull) {
+    int bucket =
+        grpc_stats_table_9[((_val.uint - 4613937818241073152ull) >> 51)] + 3;
+    _bkt.dbl = grpc_stats_table_8[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED,
+      grpc_stats_histo_find_bucket_slow(value, grpc_stats_table_8, 8));
+}
+const int grpc_stats_histo_buckets[13] = {64, 128, 64, 64, 64, 64, 64,
+                                          64, 64,  64, 64, 64, 8};
+const int grpc_stats_histo_start[13] = {0,   64,  192, 256, 320, 384, 448,
+                                        512, 576, 640, 704, 768, 832};
+const int* const grpc_stats_histo_bucket_boundaries[13] = {
+    grpc_stats_table_0, grpc_stats_table_2, grpc_stats_table_4,
+    grpc_stats_table_6, grpc_stats_table_4, grpc_stats_table_4,
+    grpc_stats_table_6, grpc_stats_table_4, grpc_stats_table_6,
+    grpc_stats_table_6, grpc_stats_table_6, grpc_stats_table_6,
+    grpc_stats_table_8};
+void (*const grpc_stats_inc_histogram[13])(int x) = {
+    grpc_stats_inc_call_initial_size,
+    grpc_stats_inc_poll_events_returned,
+    grpc_stats_inc_tcp_write_size,
+    grpc_stats_inc_tcp_write_iov_size,
+    grpc_stats_inc_tcp_read_size,
+    grpc_stats_inc_tcp_read_offer,
+    grpc_stats_inc_tcp_read_offer_iov_size,
+    grpc_stats_inc_http2_send_message_size,
+    grpc_stats_inc_http2_send_initial_metadata_per_write,
+    grpc_stats_inc_http2_send_message_per_write,
+    grpc_stats_inc_http2_send_trailing_metadata_per_write,
+    grpc_stats_inc_http2_send_flowctl_per_write,
+    grpc_stats_inc_server_cqs_checked};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.h
new file mode 100644
index 0000000..1f3861f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/stats_data.h	
@@ -0,0 +1,555 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_stats_data.py
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+#define GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef enum {
+  GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CALLS_CREATED,
+  GRPC_STATS_COUNTER_CQS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SYSCALL_POLL,
+  GRPC_STATS_COUNTER_SYSCALL_WAIT,
+  GRPC_STATS_COUNTER_POLLSET_KICK,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV,
+  GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD,
+  GRPC_STATS_COUNTER_SYSCALL_EPOLL_CTL,
+  GRPC_STATS_COUNTER_POLLSET_FD_CACHE_HITS,
+  GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS,
+  GRPC_STATS_COUNTER_SYSCALL_WRITE,
+  GRPC_STATS_COUNTER_SYSCALL_READ,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS,
+  GRPC_STATS_COUNTER_HTTP2_OP_BATCHES,
+  GRPC_STATS_COUNTER_HTTP2_OP_CANCEL,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_PINGS_SENT,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED,
+  GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_SPURIOUS_WRITES_BEGUN,
+  GRPC_STATS_COUNTER_HPACK_RECV_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64,
+  GRPC_STATS_COUNTER_HPACK_SEND_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED,
+  GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_INITIATED,
+  GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS,
+  GRPC_STATS_COUNTER_CALL_COMBINER_SET_NOTIFY_ON_CANCEL,
+  GRPC_STATS_COUNTER_CALL_COMBINER_CANCELLED,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF,
+  GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED,
+  GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED,
+  GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES,
+  GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS,
+  GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_FAILURES,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_SUCCESSES,
+  GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES,
+  GRPC_STATS_COUNTER_COUNT
+} grpc_stats_counters;
+extern const char* grpc_stats_counter_name[GRPC_STATS_COUNTER_COUNT];
+extern const char* grpc_stats_counter_doc[GRPC_STATS_COUNTER_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED,
+  GRPC_STATS_HISTOGRAM_COUNT
+} grpc_stats_histograms;
+extern const char* grpc_stats_histogram_name[GRPC_STATS_HISTOGRAM_COUNT];
+extern const char* grpc_stats_histogram_doc[GRPC_STATS_HISTOGRAM_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_FIRST_SLOT = 0,
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_FIRST_SLOT = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_BUCKETS = 128,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_FIRST_SLOT = 192,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_FIRST_SLOT = 256,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_FIRST_SLOT = 320,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_FIRST_SLOT = 384,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_FIRST_SLOT = 448,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_FIRST_SLOT = 512,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_FIRST_SLOT = 576,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_FIRST_SLOT = 640,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_FIRST_SLOT = 704,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_FIRST_SLOT = 768,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_FIRST_SLOT = 832,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_BUCKETS = 8,
+  GRPC_STATS_HISTOGRAM_BUCKETS = 840
+} grpc_stats_histogram_constants;
+#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)
+#define GRPC_STATS_INC_CLIENT_CALLS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED)
+#define GRPC_STATS_INC_SERVER_CALLS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_CALLS_CREATED)
+#define GRPC_STATS_INC_CQS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQS_CREATED)
+#define GRPC_STATS_INC_CLIENT_CHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED)
+#define GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED)
+#define GRPC_STATS_INC_SERVER_CHANNELS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED)
+#define GRPC_STATS_INC_SYSCALL_POLL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_POLL)
+#define GRPC_STATS_INC_SYSCALL_WAIT() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_WAIT)
+#define GRPC_STATS_INC_POLLSET_KICK() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK)
+#define GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER)
+#define GRPC_STATS_INC_POLLSET_KICKED_AGAIN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV)
+#define GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD)
+#define GRPC_STATS_INC_SYSCALL_EPOLL_CTL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_EPOLL_CTL)
+#define GRPC_STATS_INC_POLLSET_FD_CACHE_HITS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_POLLSET_FD_CACHE_HITS)
+#define GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS)
+#define GRPC_STATS_INC_SYSCALL_WRITE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_WRITE)
+#define GRPC_STATS_INC_SYSCALL_READ() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SYSCALL_READ)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS)
+#define GRPC_STATS_INC_HTTP2_OP_BATCHES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_BATCHES)
+#define GRPC_STATS_INC_HTTP2_OP_CANCEL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_CANCEL)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_SETTINGS_WRITES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES)
+#define GRPC_STATS_INC_HTTP2_PINGS_SENT() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_PINGS_SENT)
+#define GRPC_STATS_INC_HTTP2_WRITES_BEGUN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN)
+#define GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED)
+#define GRPC_STATS_INC_HTTP2_WRITES_CONTINUED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED)
+#define GRPC_STATS_INC_HTTP2_PARTIAL_WRITES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE() \
+  GRPC_STATS_INC_COUNTER(                                         \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA() \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA() \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING() \
+  GRPC_STATS_INC_COUNTER(                                            \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT() \
+  GRPC_STATS_INC_COUNTER(                                        \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                       \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL() \
+  GRPC_STATS_INC_COUNTER(                                                \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL() \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING() \
+  GRPC_STATS_INC_COUNTER(                                               \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING() \
+  GRPC_STATS_INC_COUNTER(                                                              \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE() \
+  GRPC_STATS_INC_COUNTER(                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING() \
+  GRPC_STATS_INC_COUNTER(                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED() \
+  GRPC_STATS_INC_COUNTER(                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE() \
+  GRPC_STATS_INC_COUNTER(                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM() \
+  GRPC_STATS_INC_COUNTER(                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM)
+#define GRPC_STATS_INC_HTTP2_SPURIOUS_WRITES_BEGUN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HTTP2_SPURIOUS_WRITES_BEGUN)
+#define GRPC_STATS_INC_HPACK_RECV_INDEXED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_INDEXED)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_RECV_HUFFMAN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_BINARY)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64)
+#define GRPC_STATS_INC_HPACK_SEND_INDEXED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_INDEXED)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX_V() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_SEND_HUFFMAN() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_BINARY)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64)
+#define GRPC_STATS_INC_COMBINER_LOCKS_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS() \
+  GRPC_STATS_INC_COUNTER(                                     \
+      GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED)
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_INITIATED)
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS)
+#define GRPC_STATS_INC_CALL_COMBINER_SET_NOTIFY_ON_CANCEL() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_SET_NOTIFY_ON_CANCEL)
+#define GRPC_STATS_INC_CALL_COMBINER_CANCELLED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CALL_COMBINER_CANCELLED)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF)
+#define GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED)
+#define GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED)
+#define GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES)
+#define GRPC_STATS_INC_SERVER_REQUESTED_CALLS() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS)
+#define GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_FAILURES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_FAILURES)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_SUCCESSES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRYLOCK_SUCCESSES)
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES() \
+  GRPC_STATS_INC_COUNTER(GRPC_STATS_COUNTER_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES)
+#define GRPC_STATS_INC_CALL_INITIAL_SIZE(value) \
+  grpc_stats_inc_call_initial_size((int)(value))
+void grpc_stats_inc_call_initial_size(int x);
+#define GRPC_STATS_INC_POLL_EVENTS_RETURNED(value) \
+  grpc_stats_inc_poll_events_returned((int)(value))
+void grpc_stats_inc_poll_events_returned(int x);
+#define GRPC_STATS_INC_TCP_WRITE_SIZE(value) \
+  grpc_stats_inc_tcp_write_size((int)(value))
+void grpc_stats_inc_tcp_write_size(int x);
+#define GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(value) \
+  grpc_stats_inc_tcp_write_iov_size((int)(value))
+void grpc_stats_inc_tcp_write_iov_size(int x);
+#define GRPC_STATS_INC_TCP_READ_SIZE(value) \
+  grpc_stats_inc_tcp_read_size((int)(value))
+void grpc_stats_inc_tcp_read_size(int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER(value) \
+  grpc_stats_inc_tcp_read_offer((int)(value))
+void grpc_stats_inc_tcp_read_offer(int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(value) \
+  grpc_stats_inc_tcp_read_offer_iov_size((int)(value))
+void grpc_stats_inc_tcp_read_offer_iov_size(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(value) \
+  grpc_stats_inc_http2_send_message_size((int)(value))
+void grpc_stats_inc_http2_send_message_size(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_initial_metadata_per_write((int)(value))
+void grpc_stats_inc_http2_send_initial_metadata_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_message_per_write((int)(value))
+void grpc_stats_inc_http2_send_message_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_trailing_metadata_per_write((int)(value))
+void grpc_stats_inc_http2_send_trailing_metadata_per_write(int x);
+#define GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(value) \
+  grpc_stats_inc_http2_send_flowctl_per_write((int)(value))
+void grpc_stats_inc_http2_send_flowctl_per_write(int x);
+#define GRPC_STATS_INC_SERVER_CQS_CHECKED(value) \
+  grpc_stats_inc_server_cqs_checked((int)(value))
+void grpc_stats_inc_server_cqs_checked(int x);
+#else
+#define GRPC_STATS_INC_CLIENT_CALLS_CREATED()
+#define GRPC_STATS_INC_SERVER_CALLS_CREATED()
+#define GRPC_STATS_INC_CQS_CREATED()
+#define GRPC_STATS_INC_CLIENT_CHANNELS_CREATED()
+#define GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED()
+#define GRPC_STATS_INC_SERVER_CHANNELS_CREATED()
+#define GRPC_STATS_INC_SYSCALL_POLL()
+#define GRPC_STATS_INC_SYSCALL_WAIT()
+#define GRPC_STATS_INC_POLLSET_KICK()
+#define GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER()
+#define GRPC_STATS_INC_POLLSET_KICKED_AGAIN()
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD()
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV()
+#define GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD()
+#define GRPC_STATS_INC_SYSCALL_EPOLL_CTL()
+#define GRPC_STATS_INC_POLLSET_FD_CACHE_HITS()
+#define GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS()
+#define GRPC_STATS_INC_SYSCALL_WRITE()
+#define GRPC_STATS_INC_SYSCALL_READ()
+#define GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED()
+#define GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS()
+#define GRPC_STATS_INC_HTTP2_OP_BATCHES()
+#define GRPC_STATS_INC_HTTP2_OP_CANCEL()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_SETTINGS_WRITES()
+#define GRPC_STATS_INC_HTTP2_PINGS_SENT()
+#define GRPC_STATS_INC_HTTP2_WRITES_BEGUN()
+#define GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED()
+#define GRPC_STATS_INC_HTTP2_WRITES_CONTINUED()
+#define GRPC_STATS_INC_HTTP2_PARTIAL_WRITES()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE()
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM()
+#define GRPC_STATS_INC_HTTP2_SPURIOUS_WRITES_BEGUN()
+#define GRPC_STATS_INC_HPACK_RECV_INDEXED()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX()
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V()
+#define GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED()
+#define GRPC_STATS_INC_HPACK_RECV_HUFFMAN()
+#define GRPC_STATS_INC_HPACK_RECV_BINARY()
+#define GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64()
+#define GRPC_STATS_INC_HPACK_SEND_INDEXED()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX()
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX_V()
+#define GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED()
+#define GRPC_STATS_INC_HPACK_SEND_HUFFMAN()
+#define GRPC_STATS_INC_HPACK_SEND_BINARY()
+#define GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64()
+#define GRPC_STATS_INC_COMBINER_LOCKS_INITIATED()
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS()
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS()
+#define GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED()
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_INITIATED()
+#define GRPC_STATS_INC_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS()
+#define GRPC_STATS_INC_CALL_COMBINER_SET_NOTIFY_ON_CANCEL()
+#define GRPC_STATS_INC_CALL_COMBINER_CANCELLED()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS()
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF()
+#define GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED()
+#define GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED()
+#define GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES()
+#define GRPC_STATS_INC_SERVER_REQUESTED_CALLS()
+#define GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_FAILURES()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_SUCCESSES()
+#define GRPC_STATS_INC_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES()
+#define GRPC_STATS_INC_CALL_INITIAL_SIZE(value)
+#define GRPC_STATS_INC_POLL_EVENTS_RETURNED(value)
+#define GRPC_STATS_INC_TCP_WRITE_SIZE(value)
+#define GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(value)
+#define GRPC_STATS_INC_TCP_READ_SIZE(value)
+#define GRPC_STATS_INC_TCP_READ_OFFER(value)
+#define GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(value)
+#define GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(value)
+#define GRPC_STATS_INC_SERVER_CQS_CHECKED(value)
+#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+extern const int grpc_stats_histo_buckets[13];
+extern const int grpc_stats_histo_start[13];
+extern const int* const grpc_stats_histo_bucket_boundaries[13];
+extern void (*const grpc_stats_inc_histogram[13])(int x);
+
+#endif /* GRPC_CORE_LIB_DEBUG_STATS_DATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.cc
new file mode 100644
index 0000000..84c0a38
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.cc	
@@ -0,0 +1,154 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/trace.h"
+
+#include <string.h>
+#include <type_traits>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(
+    grpc_trace, "",
+    "A comma separated list of tracers that provide additional insight into "
+    "how gRPC C core is processing requests via debug logs.");
+
+int grpc_tracer_set_enabled(const char* name, int enabled);
+
+namespace grpc_core {
+
+TraceFlag* TraceFlagList::root_tracer_ = nullptr;
+
+bool TraceFlagList::Set(const char* name, bool enabled) {
+  TraceFlag* t;
+  if (0 == strcmp(name, "all")) {
+    for (t = root_tracer_; t; t = t->next_tracer_) {
+      t->set_enabled(enabled);
+    }
+  } else if (0 == strcmp(name, "list_tracers")) {
+    LogAllTracers();
+  } else if (0 == strcmp(name, "refcount")) {
+    for (t = root_tracer_; t; t = t->next_tracer_) {
+      if (strstr(t->name_, "refcount") != nullptr) {
+        t->set_enabled(enabled);
+      }
+    }
+  } else {
+    bool found = false;
+    for (t = root_tracer_; t; t = t->next_tracer_) {
+      if (0 == strcmp(name, t->name_)) {
+        t->set_enabled(enabled);
+        found = true;
+      }
+    }
+    // check for unknowns, but ignore "", to allow to GRPC_TRACE=
+    if (!found && 0 != strcmp(name, "")) {
+      gpr_log(GPR_ERROR, "Unknown trace var: '%s'", name);
+      return false; /* early return */
+    }
+  }
+  return true;
+}
+
+void TraceFlagList::Add(TraceFlag* flag) {
+  flag->next_tracer_ = root_tracer_;
+  root_tracer_ = flag;
+}
+
+void TraceFlagList::LogAllTracers() {
+  gpr_log(GPR_DEBUG, "available tracers:");
+  TraceFlag* t;
+  for (t = root_tracer_; t != nullptr; t = t->next_tracer_) {
+    gpr_log(GPR_DEBUG, "\t%s", t->name_);
+  }
+}
+
+// Flags register themselves on the list during construction
+TraceFlag::TraceFlag(bool default_enabled, const char* name) : name_(name) {
+  static_assert(std::is_trivially_destructible<TraceFlag>::value,
+                "TraceFlag needs to be trivially destructible.");
+  set_enabled(default_enabled);
+  TraceFlagList::Add(this);
+}
+
+}  // namespace grpc_core
+
+static void add(const char* beg, const char* end, char*** ss, size_t* ns) {
+  size_t n = *ns;
+  size_t np = n + 1;
+  char* s;
+  size_t len;
+  GPR_ASSERT(end >= beg);
+  len = static_cast<size_t>(end - beg);
+  s = static_cast<char*>(gpr_malloc(len + 1));
+  memcpy(s, beg, len);
+  s[len] = 0;
+  *ss = static_cast<char**>(gpr_realloc(*ss, sizeof(char**) * np));
+  (*ss)[n] = s;
+  *ns = np;
+}
+
+static void split(const char* s, char*** ss, size_t* ns) {
+  const char* c = strchr(s, ',');
+  if (c == nullptr) {
+    add(s, s + strlen(s), ss, ns);
+  } else {
+    add(s, c, ss, ns);
+    split(c + 1, ss, ns);
+  }
+}
+
+static void parse(const char* s) {
+  char** strings = nullptr;
+  size_t nstrings = 0;
+  size_t i;
+  split(s, &strings, &nstrings);
+
+  for (i = 0; i < nstrings; i++) {
+    if (strings[i][0] == '-') {
+      grpc_core::TraceFlagList::Set(strings[i] + 1, false);
+    } else {
+      grpc_core::TraceFlagList::Set(strings[i], true);
+    }
+  }
+
+  for (i = 0; i < nstrings; i++) {
+    gpr_free(strings[i]);
+  }
+  gpr_free(strings);
+}
+
+void grpc_tracer_init(const char* env_var_name) {
+  (void)env_var_name;  // suppress unused variable error
+  grpc_tracer_init();
+}
+
+void grpc_tracer_init() {
+  grpc_core::UniquePtr<char> value = GPR_GLOBAL_CONFIG_GET(grpc_trace);
+  parse(value.get());
+}
+
+void grpc_tracer_shutdown(void) {}
+
+int grpc_tracer_set_enabled(const char* name, int enabled) {
+  return grpc_core::TraceFlagList::Set(name, enabled != 0);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.h
new file mode 100644
index 0000000..ac7b40e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/debug/trace.h	
@@ -0,0 +1,131 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_TRACE_H
+#define GRPC_CORE_LIB_DEBUG_TRACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include <stdbool.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_trace);
+
+// TODO(veblush): Remove this deprecated function once codes depending on this
+// function are updated in the internal repo.
+void grpc_tracer_init(const char* env_var_name);
+
+void grpc_tracer_init();
+void grpc_tracer_shutdown(void);
+
+#if defined(__has_feature)
+#if __has_feature(thread_sanitizer)
+#define GRPC_THREADSAFE_TRACER
+#endif
+#endif
+
+namespace grpc_core {
+
+class TraceFlag;
+class TraceFlagList {
+ public:
+  static bool Set(const char* name, bool enabled);
+  static void Add(TraceFlag* flag);
+
+ private:
+  static void LogAllTracers();
+  static TraceFlag* root_tracer_;
+};
+
+namespace testing {
+void grpc_tracer_enable_flag(grpc_core::TraceFlag* flag);
+}
+
+class TraceFlag {
+ public:
+  TraceFlag(bool default_enabled, const char* name);
+  // TraceFlag needs to be trivially destructible since it is used as global
+  // variable.
+  ~TraceFlag() = default;
+
+  const char* name() const { return name_; }
+
+// Use the symbol GRPC_USE_TRACERS to determine if tracers will be enabled in
+// opt builds (tracers are always on in dbg builds). The default in OSS is for
+// tracers to be on since we support binary distributions of gRPC for the
+// wrapped language (wr don't want to force recompilation to get tracing).
+// Internally, however, for performance reasons, we compile them out by
+// default, since internal build systems make recompiling trivial.
+//
+// Prefer GRPC_TRACE_FLAG_ENABLED() macro instead of using enabled() directly.
+#define GRPC_USE_TRACERS  // tracers on by default in OSS
+#if defined(GRPC_USE_TRACERS) || !defined(NDEBUG)
+  bool enabled() {
+#ifdef GRPC_THREADSAFE_TRACER
+    return gpr_atm_no_barrier_load(&value_) != 0;
+#else
+    return value_;
+#endif  // GRPC_THREADSAFE_TRACER
+  }
+#else
+  bool enabled() { return false; }
+#endif /* defined(GRPC_USE_TRACERS) || !defined(NDEBUG) */
+
+ private:
+  friend void grpc_core::testing::grpc_tracer_enable_flag(TraceFlag* flag);
+  friend class TraceFlagList;
+
+  void set_enabled(bool enabled) {
+#ifdef GRPC_THREADSAFE_TRACER
+    gpr_atm_no_barrier_store(&value_, enabled);
+#else
+    value_ = enabled;
+#endif
+  }
+
+  TraceFlag* next_tracer_;
+  const char* const name_;
+#ifdef GRPC_THREADSAFE_TRACER
+  gpr_atm value_;
+#else
+  bool value_;
+#endif
+};
+
+#define GRPC_TRACE_FLAG_ENABLED(f) GPR_UNLIKELY((f).enabled())
+
+#ifndef NDEBUG
+typedef TraceFlag DebugOnlyTraceFlag;
+#else
+class DebugOnlyTraceFlag {
+ public:
+  constexpr DebugOnlyTraceFlag(bool /*default_enabled*/, const char* /*name*/) {
+  }
+  constexpr bool enabled() const { return false; }
+  constexpr const char* name() const { return "DebugOnlyTraceFlag"; }
+
+ private:
+  void set_enabled(bool /*enabled*/) {}
+};
+#endif
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_DEBUG_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.cc
new file mode 100644
index 0000000..8c7345b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.cc	
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+
+#include <grpc/support/log.h>
+#include <stdlib.h>
+#include <string.h>
+#include "src/core/lib/profiling/timers.h"
+
+void* gpr_malloc(size_t size) {
+  GPR_TIMER_SCOPE("gpr_malloc", 0);
+  void* p;
+  if (size == 0) return nullptr;
+  p = malloc(size);
+  if (!p) {
+    abort();
+  }
+  return p;
+}
+
+void* gpr_zalloc(size_t size) {
+  GPR_TIMER_SCOPE("gpr_zalloc", 0);
+  void* p;
+  if (size == 0) return nullptr;
+  p = calloc(size, 1);
+  if (!p) {
+    abort();
+  }
+  return p;
+}
+
+void gpr_free(void* p) {
+  GPR_TIMER_SCOPE("gpr_free", 0);
+  free(p);
+}
+
+void* gpr_realloc(void* p, size_t size) {
+  GPR_TIMER_SCOPE("gpr_realloc", 0);
+  if ((size == 0) && (p == nullptr)) return nullptr;
+  p = realloc(p, size);
+  if (!p) {
+    abort();
+  }
+  return p;
+}
+
+void* gpr_malloc_aligned(size_t size, size_t alignment) {
+  GPR_ASSERT(((alignment - 1) & alignment) == 0);  // Must be power of 2.
+  size_t extra = alignment - 1 + sizeof(void*);
+  void* p = gpr_malloc(size + extra);
+  void** ret = (void**)(((uintptr_t)p + extra) & ~(alignment - 1));
+  ret[-1] = p;
+  return (void*)ret;
+}
+
+void gpr_free_aligned(void* ptr) { gpr_free((static_cast<void**>(ptr))[-1]); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.h
new file mode 100644
index 0000000..762b51b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/alloc.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_ALLOC_H
+#define GRPC_CORE_LIB_GPR_ALLOC_H
+
+#include <grpc/support/port_platform.h>
+
+/// Given a size, round up to the next multiple of sizeof(void*).
+#define GPR_ROUND_UP_TO_ALIGNMENT_SIZE(x) \
+  (((x) + GPR_MAX_ALIGNMENT - 1u) & ~(GPR_MAX_ALIGNMENT - 1u))
+
+#endif /* GRPC_CORE_LIB_GPR_ALLOC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/arena.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/arena.h
new file mode 100644
index 0000000..4d70695
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/arena.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// \file Arena based allocator
+// Allows very fast allocation of memory, but that memory cannot be freed until
+// the arena as a whole is freed
+// Tracks the total memory allocated against it, so that future arenas can
+// pre-allocate the right amount of memory
+// This transitional API is deprecated and will be removed soon in favour of
+// src/core/lib/gprpp/arena.h .
+
+#ifndef GRPC_CORE_LIB_GPR_ARENA_H
+#define GRPC_CORE_LIB_GPR_ARENA_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/arena.h"
+
+// TODO(arjunroy) : Remove deprecated gpr_arena API once all callers are gone.
+typedef class grpc_core::Arena gpr_arena;
+// Create an arena, with \a initial_size bytes in the first allocated buffer
+inline gpr_arena* gpr_arena_create(size_t initial_size) {
+  return grpc_core::Arena::Create(initial_size);
+}
+// Destroy an arena, returning the total number of bytes allocated
+inline size_t gpr_arena_destroy(gpr_arena* arena) { return arena->Destroy(); }
+// Allocate \a size bytes from the arena
+inline void* gpr_arena_alloc(gpr_arena* arena, size_t size) {
+  return arena->Alloc(size);
+}
+
+#endif /* GRPC_CORE_LIB_GPR_ARENA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/atm.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/atm.cc
new file mode 100644
index 0000000..649d400
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/atm.cc	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+gpr_atm gpr_atm_no_barrier_clamped_add(gpr_atm* value, gpr_atm delta,
+                                       gpr_atm min, gpr_atm max) {
+  gpr_atm current_value;
+  gpr_atm new_value;
+  do {
+    current_value = gpr_atm_no_barrier_load(value);
+    new_value = GPR_CLAMP(current_value + delta, min, max);
+    if (new_value == current_value) break;
+  } while (!gpr_atm_no_barrier_cas(value, current_value, new_value));
+  return new_value;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_iphone.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_iphone.cc
new file mode 100644
index 0000000..2847e03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_iphone.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/cpu.h>
+
+#ifdef GPR_CPU_IPHONE
+
+/* Probably 2 instead of 1, but see comment on gpr_cpu_current_cpu. */
+unsigned gpr_cpu_num_cores(void) { return 1; }
+
+/* Most code that's using this is using it to shard across work queues. So
+   unless profiling shows it's a problem or there appears a way to detect the
+   currently running CPU core, let's have it shard the default way.
+   Note that the interface in cpu.h lets gpr_cpu_num_cores return 0, but doing
+   it makes it impossible for gpr_cpu_current_cpu to satisfy its stated range,
+   and some code might be relying on it. */
+unsigned gpr_cpu_current_cpu(void) { return 0; }
+
+#endif /* GPR_CPU_IPHONE */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_linux.cc
new file mode 100644
index 0000000..2e16e3d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_linux.cc	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif /* _GNU_SOURCE */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_CPU_LINUX
+
+#include <errno.h>
+#include <sched.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+static int ncpus = 0;
+
+static void init_num_cpus() {
+#ifndef GPR_MUSL_LIBC_COMPAT
+  if (sched_getcpu() < 0) {
+    gpr_log(GPR_ERROR, "Error determining current CPU: %s\n", strerror(errno));
+    ncpus = 1;
+    return;
+  }
+#endif
+  /* This must be signed. sysconf returns -1 when the number cannot be
+     determined */
+  ncpus = static_cast<int>(sysconf(_SC_NPROCESSORS_CONF));
+  if (ncpus < 1) {
+    gpr_log(GPR_ERROR, "Cannot determine number of CPUs: assuming 1");
+    ncpus = 1;
+  }
+}
+
+unsigned gpr_cpu_num_cores(void) {
+  static gpr_once once = GPR_ONCE_INIT;
+  gpr_once_init(&once, init_num_cpus);
+  return static_cast<unsigned>(ncpus);
+}
+
+unsigned gpr_cpu_current_cpu(void) {
+#ifdef GPR_MUSL_LIBC_COMPAT
+  // sched_getcpu() is undefined on musl
+  return 0;
+#else
+  if (gpr_cpu_num_cores() == 1) {
+    return 0;
+  }
+  int cpu = sched_getcpu();
+  if (cpu < 0) {
+    gpr_log(GPR_ERROR, "Error determining current CPU: %s\n", strerror(errno));
+    return 0;
+  }
+  if (static_cast<unsigned>(cpu) >= gpr_cpu_num_cores()) {
+    gpr_log(GPR_DEBUG, "Cannot handle hot-plugged CPUs");
+    return 0;
+  }
+  return static_cast<unsigned>(cpu);
+#endif
+}
+
+#endif /* GPR_CPU_LINUX */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_posix.cc
new file mode 100644
index 0000000..982ccbd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_posix.cc	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if defined(GPR_CPU_POSIX)
+
+#include <errno.h>
+#include <pthread.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+static long ncpus = 0;
+
+static pthread_key_t thread_id_key;
+
+static void init_ncpus() {
+  ncpus = sysconf(_SC_NPROCESSORS_CONF);
+  if (ncpus < 1 || ncpus > INT32_MAX) {
+    gpr_log(GPR_ERROR, "Cannot determine number of CPUs: assuming 1");
+    ncpus = 1;
+  }
+}
+
+unsigned gpr_cpu_num_cores(void) {
+  static gpr_once once = GPR_ONCE_INIT;
+  gpr_once_init(&once, init_ncpus);
+  return (unsigned)ncpus;
+}
+
+static void delete_thread_id(void* value) {
+  if (value) {
+    free(value);
+  }
+}
+
+static void init_thread_id_key(void) {
+  pthread_key_create(&thread_id_key, delete_thread_id);
+}
+
+unsigned gpr_cpu_current_cpu(void) {
+  /* NOTE: there's no way I know to return the actual cpu index portably...
+     most code that's using this is using it to shard across work queues though,
+     so here we use thread identity instead to achieve a similar though not
+     identical effect */
+  static gpr_once once = GPR_ONCE_INIT;
+  gpr_once_init(&once, init_thread_id_key);
+
+  unsigned int* thread_id =
+      static_cast<unsigned int*>(pthread_getspecific(thread_id_key));
+  if (thread_id == nullptr) {
+    // Note we cannot use gpr_malloc here because this allocation can happen in
+    // a main thread and will only be free'd when the main thread exits, which
+    // will cause our internal memory counters to believe it is a leak.
+    thread_id = static_cast<unsigned int*>(malloc(sizeof(unsigned int)));
+    pthread_setspecific(thread_id_key, thread_id);
+  }
+
+  return (unsigned)GPR_HASH_POINTER(thread_id, gpr_cpu_num_cores());
+}
+
+#endif /* GPR_CPU_POSIX */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_windows.cc
new file mode 100644
index 0000000..8d89453
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/cpu_windows.cc	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+
+unsigned gpr_cpu_num_cores(void) {
+  SYSTEM_INFO si;
+  GetSystemInfo(&si);
+  return si.dwNumberOfProcessors;
+}
+
+unsigned gpr_cpu_current_cpu(void) { return GetCurrentProcessorNumber(); }
+
+#endif /* GPR_WINDOWS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env.h
new file mode 100644
index 0000000..f5016c6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_ENV_H
+#define GRPC_CORE_LIB_GPR_ENV_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+/* Env utility functions */
+
+/* Gets the environment variable value with the specified name.
+   Returns a newly allocated string. It is the responsibility of the caller to
+   gpr_free the return value if not NULL (which means that the environment
+   variable exists). */
+char* gpr_getenv(const char* name);
+
+/* Sets the environment with the specified name to the specified value. */
+void gpr_setenv(const char* name, const char* value);
+
+/* Deletes the variable name from the environment. */
+void gpr_unsetenv(const char* name);
+
+#endif /* GRPC_CORE_LIB_GPR_ENV_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_linux.cc
new file mode 100644
index 0000000..6a78dc1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_linux.cc	
@@ -0,0 +1,76 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* for secure_getenv. */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX_ENV
+
+#include "src/core/lib/gpr/env.h"
+
+#include <dlfcn.h>
+#include <features.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+
+char* gpr_getenv(const char* name) {
+  char* result = nullptr;
+#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE)
+  typedef char* (*getenv_type)(const char*);
+  static getenv_type getenv_func = nullptr;
+  /* Check to see which getenv variant is supported (go from most
+   * to least secure) */
+  if (getenv_func == nullptr) {
+    const char* names[] = {"secure_getenv", "__secure_getenv", "getenv"};
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(names); i++) {
+      getenv_func = (getenv_type)dlsym(RTLD_DEFAULT, names[i]);
+      if (getenv_func != nullptr) {
+        break;
+      }
+    }
+  }
+  result = getenv_func(name);
+#elif __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17)
+  result = secure_getenv(name);
+#else
+  result = getenv(name);
+#endif
+  return result == nullptr ? result : gpr_strdup(result);
+}
+
+void gpr_setenv(const char* name, const char* value) {
+  int res = setenv(name, value, 1);
+  GPR_ASSERT(res == 0);
+}
+
+void gpr_unsetenv(const char* name) {
+  int res = unsetenv(name);
+  GPR_ASSERT(res == 0);
+}
+
+#endif /* GPR_LINUX_ENV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_posix.cc
new file mode 100644
index 0000000..232095b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_posix.cc	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_ENV
+
+#include "src/core/lib/gpr/env.h"
+
+#include <stdlib.h>
+
+#include <grpc/support/log.h>
+
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+
+char* gpr_getenv(const char* name) {
+  char* result = getenv(name);
+  return result == nullptr ? result : gpr_strdup(result);
+}
+
+void gpr_setenv(const char* name, const char* value) {
+  int res = setenv(name, value, 1);
+  GPR_ASSERT(res == 0);
+}
+
+void gpr_unsetenv(const char* name) {
+  int res = unsetenv(name);
+  GPR_ASSERT(res == 0);
+}
+
+#endif /* GPR_POSIX_ENV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_windows.cc
new file mode 100644
index 0000000..76c45fb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/env_windows.cc	
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS_ENV
+
+#include <windows.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
+
+char* gpr_getenv(const char* name) {
+  char* result = NULL;
+  DWORD size;
+  LPTSTR tresult = NULL;
+  LPTSTR tname = gpr_char_to_tchar(name);
+  DWORD ret;
+
+  ret = GetEnvironmentVariable(tname, NULL, 0);
+  if (ret == 0) {
+    gpr_free(tname);
+    return NULL;
+  }
+  size = ret * (DWORD)sizeof(TCHAR);
+  tresult = (LPTSTR)gpr_malloc(size);
+  ret = GetEnvironmentVariable(tname, tresult, size);
+  gpr_free(tname);
+  if (ret == 0) {
+    gpr_free(tresult);
+    return NULL;
+  }
+  result = gpr_tchar_to_char(tresult);
+  gpr_free(tresult);
+  return result;
+}
+
+void gpr_setenv(const char* name, const char* value) {
+  LPTSTR tname = gpr_char_to_tchar(name);
+  LPTSTR tvalue = gpr_char_to_tchar(value);
+  BOOL res = SetEnvironmentVariable(tname, tvalue);
+  gpr_free(tname);
+  gpr_free(tvalue);
+  GPR_ASSERT(res);
+}
+
+void gpr_unsetenv(const char* name) {
+  LPTSTR tname = gpr_char_to_tchar(name);
+  BOOL res = SetEnvironmentVariable(tname, NULL);
+  gpr_free(tname);
+  GPR_ASSERT(res);
+}
+
+#endif /* GPR_WINDOWS_ENV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log.cc
new file mode 100644
index 0000000..8a229b2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log.cc	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/global_config.h"
+
+#include <stdio.h>
+#include <string.h>
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(grpc_verbosity, "ERROR",
+                                "Default gRPC logging verbosity")
+
+void gpr_default_log(gpr_log_func_args* args);
+static gpr_atm g_log_func = (gpr_atm)gpr_default_log;
+static gpr_atm g_min_severity_to_print = GPR_LOG_VERBOSITY_UNSET;
+
+const char* gpr_log_severity_string(gpr_log_severity severity) {
+  switch (severity) {
+    case GPR_LOG_SEVERITY_DEBUG:
+      return "D";
+    case GPR_LOG_SEVERITY_INFO:
+      return "I";
+    case GPR_LOG_SEVERITY_ERROR:
+      return "E";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+int gpr_should_log(gpr_log_severity severity) {
+  return static_cast<gpr_atm>(severity) >=
+                 gpr_atm_no_barrier_load(&g_min_severity_to_print)
+             ? 1
+             : 0;
+}
+
+void gpr_log_message(const char* file, int line, gpr_log_severity severity,
+                     const char* message) {
+  if (gpr_should_log(severity) == 0) {
+    return;
+  }
+
+  gpr_log_func_args lfargs;
+  memset(&lfargs, 0, sizeof(lfargs));
+  lfargs.file = file;
+  lfargs.line = line;
+  lfargs.severity = severity;
+  lfargs.message = message;
+  ((gpr_log_func)gpr_atm_no_barrier_load(&g_log_func))(&lfargs);
+}
+
+void gpr_set_log_verbosity(gpr_log_severity min_severity_to_print) {
+  gpr_atm_no_barrier_store(&g_min_severity_to_print,
+                           (gpr_atm)min_severity_to_print);
+}
+
+void gpr_log_verbosity_init() {
+  grpc_core::UniquePtr<char> verbosity = GPR_GLOBAL_CONFIG_GET(grpc_verbosity);
+
+  gpr_atm min_severity_to_print = GPR_LOG_SEVERITY_ERROR;
+  if (strlen(verbosity.get()) > 0) {
+    if (gpr_stricmp(verbosity.get(), "DEBUG") == 0) {
+      min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_DEBUG);
+    } else if (gpr_stricmp(verbosity.get(), "INFO") == 0) {
+      min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_INFO);
+    } else if (gpr_stricmp(verbosity.get(), "ERROR") == 0) {
+      min_severity_to_print = static_cast<gpr_atm>(GPR_LOG_SEVERITY_ERROR);
+    }
+  }
+  if ((gpr_atm_no_barrier_load(&g_min_severity_to_print)) ==
+      GPR_LOG_VERBOSITY_UNSET) {
+    gpr_atm_no_barrier_store(&g_min_severity_to_print, min_severity_to_print);
+  }
+}
+
+void gpr_set_log_function(gpr_log_func f) {
+  gpr_atm_no_barrier_store(&g_log_func, (gpr_atm)(f ? f : gpr_default_log));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_android.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_android.cc
new file mode 100644
index 0000000..40ef4c6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_android.cc	
@@ -0,0 +1,76 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_ANDROID
+
+#include <android/log.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+static android_LogPriority severity_to_log_priority(gpr_log_severity severity) {
+  switch (severity) {
+    case GPR_LOG_SEVERITY_DEBUG:
+      return ANDROID_LOG_DEBUG;
+    case GPR_LOG_SEVERITY_INFO:
+      return ANDROID_LOG_INFO;
+    case GPR_LOG_SEVERITY_ERROR:
+      return ANDROID_LOG_ERROR;
+  }
+  return ANDROID_LOG_DEFAULT;
+}
+
+void gpr_log(const char* file, int line, gpr_log_severity severity,
+             const char* format, ...) {
+  /* Avoid message construction if gpr_log_message won't log */
+  if (gpr_should_log(severity) == 0) {
+    return;
+  }
+  char* message = NULL;
+  va_list args;
+  va_start(args, format);
+  vasprintf(&message, format, args);
+  va_end(args);
+  gpr_log_message(file, line, severity, message);
+  free(message);
+}
+
+void gpr_default_log(gpr_log_func_args* args) {
+  const char* final_slash;
+  const char* display_file;
+  char* output = NULL;
+
+  final_slash = strrchr(args->file, '/');
+  if (final_slash == NULL)
+    display_file = args->file;
+  else
+    display_file = final_slash + 1;
+
+  asprintf(&output, "%s:%d] %s", display_file, args->line, args->message);
+
+  __android_log_write(severity_to_log_priority(args->severity), "GRPC", output);
+
+  /* allocated by asprintf => use free, not gpr_free */
+  free(output);
+}
+
+#endif /* GPR_ANDROID */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_linux.cc
new file mode 100644
index 0000000..8b597b4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_linux.cc	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef _POSIX_SOURCE
+#define _POSIX_SOURCE
+#endif
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX_LOG
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/syscall.h>
+#include <time.h>
+#include <unistd.h>
+
+static long sys_gettid(void) { return syscall(__NR_gettid); }
+
+void gpr_log(const char* file, int line, gpr_log_severity severity,
+             const char* format, ...) {
+  /* Avoid message construction if gpr_log_message won't log */
+  if (gpr_should_log(severity) == 0) {
+    return;
+  }
+  char* message = nullptr;
+  va_list args;
+  va_start(args, format);
+  if (vasprintf(&message, format, args) == -1) {
+    va_end(args);
+    return;
+  }
+  va_end(args);
+  gpr_log_message(file, line, severity, message);
+  /* message has been allocated by vasprintf above, and needs free */
+  free(message);
+}
+
+void gpr_default_log(gpr_log_func_args* args) {
+  const char* final_slash;
+  char* prefix;
+  const char* display_file;
+  char time_buffer[64];
+  time_t timer;
+  gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
+  struct tm tm;
+  static __thread long tid = 0;
+  if (tid == 0) tid = sys_gettid();
+
+  timer = static_cast<time_t>(now.tv_sec);
+  final_slash = strrchr(args->file, '/');
+  if (final_slash == nullptr)
+    display_file = args->file;
+  else
+    display_file = final_slash + 1;
+
+  if (!localtime_r(&timer, &tm)) {
+    strcpy(time_buffer, "error:localtime");
+  } else if (0 ==
+             strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) {
+    strcpy(time_buffer, "error:strftime");
+  }
+
+  gpr_asprintf(&prefix, "%s%s.%09" PRId32 " %7ld %s:%d]",
+               gpr_log_severity_string(args->severity), time_buffer,
+               now.tv_nsec, tid, display_file, args->line);
+
+  fprintf(stderr, "%-60s %s\n", prefix, args->message);
+  gpr_free(prefix);
+}
+
+#endif /* GPR_LINUX_LOG */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_posix.cc
new file mode 100644
index 0000000..2f7c6ce
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_posix.cc	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_LOG
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+static intptr_t sys_gettid(void) { return (intptr_t)pthread_self(); }
+
+void gpr_log(const char* file, int line, gpr_log_severity severity,
+             const char* format, ...) {
+  /* Avoid message construction if gpr_log_message won't log */
+  if (gpr_should_log(severity) == 0) {
+    return;
+  }
+  char buf[64];
+  char* allocated = nullptr;
+  char* message = nullptr;
+  int ret;
+  va_list args;
+  va_start(args, format);
+  ret = vsnprintf(buf, sizeof(buf), format, args);
+  va_end(args);
+  if (ret < 0) {
+    message = nullptr;
+  } else if ((size_t)ret <= sizeof(buf) - 1) {
+    message = buf;
+  } else {
+    message = allocated = (char*)gpr_malloc((size_t)ret + 1);
+    va_start(args, format);
+    vsnprintf(message, (size_t)(ret + 1), format, args);
+    va_end(args);
+  }
+  gpr_log_message(file, line, severity, message);
+  gpr_free(allocated);
+}
+
+void gpr_default_log(gpr_log_func_args* args) {
+  const char* final_slash;
+  const char* display_file;
+  char time_buffer[64];
+  time_t timer;
+  gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
+  struct tm tm;
+
+  timer = (time_t)now.tv_sec;
+  final_slash = strrchr(args->file, '/');
+  if (final_slash == nullptr)
+    display_file = args->file;
+  else
+    display_file = final_slash + 1;
+
+  if (!localtime_r(&timer, &tm)) {
+    strcpy(time_buffer, "error:localtime");
+  } else if (0 ==
+             strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) {
+    strcpy(time_buffer, "error:strftime");
+  }
+
+  char* prefix;
+  gpr_asprintf(&prefix, "%s%s.%09d %7" PRIdPTR " %s:%d]",
+               gpr_log_severity_string(args->severity), time_buffer,
+               (int)(now.tv_nsec), sys_gettid(), display_file, args->line);
+
+  fprintf(stderr, "%-70s %s\n", prefix, args->message);
+  gpr_free(prefix);
+}
+
+#endif /* defined(GPR_POSIX_LOG) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_windows.cc
new file mode 100644
index 0000000..060be57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/log_windows.cc	
@@ -0,0 +1,102 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS_LOG
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
+
+void gpr_log(const char* file, int line, gpr_log_severity severity,
+             const char* format, ...) {
+  /* Avoid message construction if gpr_log_message won't log */
+  if (gpr_should_log(severity) == 0) {
+    return;
+  }
+
+  char* message = NULL;
+  va_list args;
+  int ret;
+
+  /* Determine the length. */
+  va_start(args, format);
+  ret = _vscprintf(format, args);
+  va_end(args);
+  if (ret < 0) {
+    message = NULL;
+  } else {
+    /* Allocate a new buffer, with space for the NUL terminator. */
+    size_t strp_buflen = (size_t)ret + 1;
+    message = (char*)gpr_malloc(strp_buflen);
+
+    /* Print to the buffer. */
+    va_start(args, format);
+    ret = vsnprintf_s(message, strp_buflen, _TRUNCATE, format, args);
+    va_end(args);
+    if ((size_t)ret != strp_buflen - 1) {
+      /* This should never happen. */
+      gpr_free(message);
+      message = NULL;
+    }
+  }
+
+  gpr_log_message(file, line, severity, message);
+  gpr_free(message);
+}
+
+/* Simple starter implementation */
+void gpr_default_log(gpr_log_func_args* args) {
+  const char* final_slash;
+  const char* display_file;
+  char time_buffer[64];
+  time_t timer;
+  gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
+  struct tm tm;
+
+  timer = (time_t)now.tv_sec;
+  final_slash = strrchr(args->file, '\\');
+  if (final_slash == NULL)
+    display_file = args->file;
+  else
+    display_file = final_slash + 1;
+
+  if (localtime_s(&tm, &timer)) {
+    strcpy(time_buffer, "error:localtime");
+  } else if (0 ==
+             strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) {
+    strcpy(time_buffer, "error:strftime");
+  }
+
+  fprintf(stderr, "%s%s.%09u %5lu %s:%d] %s\n",
+          gpr_log_severity_string(args->severity), time_buffer,
+          (int)(now.tv_nsec), GetCurrentThreadId(), display_file, args->line,
+          args->message);
+  fflush(stderr);
+}
+
+#endif /* GPR_WINDOWS_LOG */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.cc
new file mode 100644
index 0000000..cf25abf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.cc	
@@ -0,0 +1,80 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+
+#include <string.h>
+
+#define ROTL32(x, r) ((x) << (r)) | ((x) >> (32 - (r)))
+
+#define FMIX32(h)    \
+  (h) ^= (h) >> 16;  \
+  (h) *= 0x85ebca6b; \
+  (h) ^= (h) >> 13;  \
+  (h) *= 0xc2b2ae35; \
+  (h) ^= (h) >> 16;
+
+uint32_t gpr_murmur_hash3(const void* key, size_t len, uint32_t seed) {
+  uint32_t h1 = seed;
+  uint32_t k1;
+
+  const uint32_t c1 = 0xcc9e2d51;
+  const uint32_t c2 = 0x1b873593;
+
+  const uint8_t* keyptr = static_cast<const uint8_t*>(key);
+  const size_t bsize = sizeof(k1);
+  const size_t nblocks = len / bsize;
+
+  /* body */
+  for (size_t i = 0; i < nblocks; i++, keyptr += bsize) {
+    memcpy(&k1, keyptr, bsize);
+
+    k1 *= c1;
+    k1 = ROTL32(k1, 15);
+    k1 *= c2;
+
+    h1 ^= k1;
+    h1 = ROTL32(h1, 13);
+    h1 = h1 * 5 + 0xe6546b64;
+  }
+
+  k1 = 0;
+
+  /* tail */
+  switch (len & 3) {
+    case 3:
+      k1 ^= (static_cast<uint32_t>(keyptr[2])) << 16;
+    /* fallthrough */
+    case 2:
+      k1 ^= (static_cast<uint32_t>(keyptr[1])) << 8;
+    /* fallthrough */
+    case 1:
+      k1 ^= keyptr[0];
+      k1 *= c1;
+      k1 = ROTL32(k1, 15);
+      k1 *= c2;
+      h1 ^= k1;
+  };
+
+  /* finalization */
+  h1 ^= static_cast<uint32_t>(len);
+  FMIX32(h1);
+  return h1;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.h
new file mode 100644
index 0000000..8004889
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/murmur_hash.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_MURMUR_HASH_H
+#define GRPC_CORE_LIB_GPR_MURMUR_HASH_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* compute the hash of key (length len) */
+uint32_t gpr_murmur_hash3(const void* key, size_t len, uint32_t seed);
+
+#endif /* GRPC_CORE_LIB_GPR_MURMUR_HASH_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/spinlock.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/spinlock.h
new file mode 100644
index 0000000..9f35530
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/spinlock.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_SPINLOCK_H
+#define GRPC_CORE_LIB_GPR_SPINLOCK_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+/* Simple spinlock. No backoff strategy, gpr_spinlock_lock is almost always
+   a concurrency code smell. */
+typedef struct {
+  gpr_atm atm;
+} gpr_spinlock;
+
+#ifdef __cplusplus
+#define GPR_SPINLOCK_INITIALIZER (gpr_spinlock{0})
+#else
+#define GPR_SPINLOCK_INITIALIZER ((gpr_spinlock){0})
+#endif
+#define GPR_SPINLOCK_STATIC_INITIALIZER \
+  { 0 }
+
+#define gpr_spinlock_trylock(lock) (gpr_atm_acq_cas(&(lock)->atm, 0, 1))
+#define gpr_spinlock_unlock(lock) (gpr_atm_rel_store(&(lock)->atm, 0))
+#define gpr_spinlock_lock(lock) \
+  do {                          \
+  } while (!gpr_spinlock_trylock((lock)))
+
+#endif /* GRPC_CORE_LIB_GPR_SPINLOCK_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.cc
new file mode 100644
index 0000000..14436ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.cc	
@@ -0,0 +1,365 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gpr/string.h"
+
+#include <ctype.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+char* gpr_strdup(const char* src) {
+  char* dst;
+  size_t len;
+
+  if (!src) {
+    return nullptr;
+  }
+
+  len = strlen(src) + 1;
+  dst = static_cast<char*>(gpr_malloc(len));
+
+  memcpy(dst, src, len);
+
+  return dst;
+}
+
+typedef struct {
+  size_t capacity;
+  size_t length;
+  char* data;
+} dump_out;
+
+char* gpr_format_timespec(gpr_timespec tm) {
+  char time_buffer[35];
+  char ns_buffer[11];  // '.' + 9 digits of precision
+  struct tm* tm_info = localtime((const time_t*)&tm.tv_sec);
+  strftime(time_buffer, sizeof(time_buffer), "%Y-%m-%dT%H:%M:%S", tm_info);
+  snprintf(ns_buffer, 11, ".%09d", tm.tv_nsec);
+  // This loop trims off trailing zeros by inserting a null character that the
+  // right point. We iterate in chunks of three because we want 0, 3, 6, or 9
+  // fractional digits.
+  for (int i = 7; i >= 1; i -= 3) {
+    if (ns_buffer[i] == '0' && ns_buffer[i + 1] == '0' &&
+        ns_buffer[i + 2] == '0') {
+      ns_buffer[i] = '\0';
+      // Edge case in which all fractional digits were 0.
+      if (i == 1) {
+        ns_buffer[0] = '\0';
+      }
+    } else {
+      break;
+    }
+  }
+  char* full_time_str;
+  gpr_asprintf(&full_time_str, "%s%sZ", time_buffer, ns_buffer);
+  return full_time_str;
+}
+
+static dump_out dump_out_create(void) {
+  dump_out r = {0, 0, nullptr};
+  return r;
+}
+
+static void dump_out_append(dump_out* out, char c) {
+  if (out->length == out->capacity) {
+    out->capacity = GPR_MAX(8, 2 * out->capacity);
+    out->data = static_cast<char*>(gpr_realloc(out->data, out->capacity));
+  }
+  out->data[out->length++] = c;
+}
+
+static void hexdump(dump_out* out, const char* buf, size_t len) {
+  static const char* hex = "0123456789abcdef";
+
+  const uint8_t* const beg = reinterpret_cast<const uint8_t*>(buf);
+  const uint8_t* const end = beg + len;
+  const uint8_t* cur;
+
+  for (cur = beg; cur != end; ++cur) {
+    if (cur != beg) dump_out_append(out, ' ');
+    dump_out_append(out, hex[*cur >> 4]);
+    dump_out_append(out, hex[*cur & 0xf]);
+  }
+}
+
+static void asciidump(dump_out* out, const char* buf, size_t len) {
+  const uint8_t* const beg = reinterpret_cast<const uint8_t*>(buf);
+  const uint8_t* const end = beg + len;
+  const uint8_t* cur;
+  int out_was_empty = (out->length == 0);
+  if (!out_was_empty) {
+    dump_out_append(out, ' ');
+    dump_out_append(out, '\'');
+  }
+  for (cur = beg; cur != end; ++cur) {
+    dump_out_append(out, (isprint(*cur) ? *(char*)cur : '.'));
+  }
+  if (!out_was_empty) {
+    dump_out_append(out, '\'');
+  }
+}
+
+char* gpr_dump_return_len(const char* buf, size_t len, uint32_t flags,
+                          size_t* out_len) {
+  dump_out out = dump_out_create();
+  if (flags & GPR_DUMP_HEX) {
+    hexdump(&out, buf, len);
+  }
+  if (flags & GPR_DUMP_ASCII) {
+    asciidump(&out, buf, len);
+  }
+  dump_out_append(&out, 0);
+  *out_len = out.length;
+  return out.data;
+}
+
+char* gpr_dump(const char* buf, size_t len, uint32_t flags) {
+  size_t unused;
+  return gpr_dump_return_len(buf, len, flags, &unused);
+}
+
+int gpr_parse_bytes_to_uint32(const char* buf, size_t len, uint32_t* result) {
+  uint32_t out = 0;
+  uint32_t new_val;
+  size_t i;
+
+  if (len == 0) return 0; /* must have some bytes */
+
+  for (i = 0; i < len; i++) {
+    if (buf[i] < '0' || buf[i] > '9') return 0; /* bad char */
+    new_val = 10 * out + static_cast<uint32_t>(buf[i] - '0');
+    if (new_val < out) return 0; /* overflow */
+    out = new_val;
+  }
+
+  *result = out;
+  return 1;
+}
+
+void gpr_reverse_bytes(char* str, int len) {
+  char *p1, *p2;
+  for (p1 = str, p2 = str + len - 1; p2 > p1; ++p1, --p2) {
+    char temp = *p1;
+    *p1 = *p2;
+    *p2 = temp;
+  }
+}
+
+int gpr_ltoa(long value, char* string) {
+  long sign;
+  int i = 0;
+
+  if (value == 0) {
+    string[0] = '0';
+    string[1] = 0;
+    return 1;
+  }
+
+  sign = value < 0 ? -1 : 1;
+  while (value) {
+    string[i++] = static_cast<char>('0' + sign * (value % 10));
+    value /= 10;
+  }
+  if (sign < 0) string[i++] = '-';
+  gpr_reverse_bytes(string, i);
+  string[i] = 0;
+  return i;
+}
+
+int int64_ttoa(int64_t value, char* string) {
+  int64_t sign;
+  int i = 0;
+
+  if (value == 0) {
+    string[0] = '0';
+    string[1] = 0;
+    return 1;
+  }
+
+  sign = value < 0 ? -1 : 1;
+  while (value) {
+    string[i++] = static_cast<char>('0' + sign * (value % 10));
+    value /= 10;
+  }
+  if (sign < 0) string[i++] = '-';
+  gpr_reverse_bytes(string, i);
+  string[i] = 0;
+  return i;
+}
+
+int gpr_parse_nonnegative_int(const char* value) {
+  char* end;
+  long result = strtol(value, &end, 0);
+  if (*end != '\0' || result < 0 || result > INT_MAX) return -1;
+  return static_cast<int>(result);
+}
+
+char* gpr_leftpad(const char* str, char flag, size_t length) {
+  const size_t str_length = strlen(str);
+  const size_t out_length = str_length > length ? str_length : length;
+  char* out = static_cast<char*>(gpr_malloc(out_length + 1));
+  memset(out, flag, out_length - str_length);
+  memcpy(out + out_length - str_length, str, str_length);
+  out[out_length] = 0;
+  return out;
+}
+
+char* gpr_strjoin(const char** strs, size_t nstrs, size_t* final_length) {
+  return gpr_strjoin_sep(strs, nstrs, "", final_length);
+}
+
+char* gpr_strjoin_sep(const char** strs, size_t nstrs, const char* sep,
+                      size_t* final_length) {
+  const size_t sep_len = strlen(sep);
+  size_t out_length = 0;
+  size_t i;
+  char* out;
+  for (i = 0; i < nstrs; i++) {
+    out_length += strlen(strs[i]);
+  }
+  out_length += 1; /* null terminator */
+  if (nstrs > 0) {
+    out_length += sep_len * (nstrs - 1); /* separators */
+  }
+  out = static_cast<char*>(gpr_malloc(out_length));
+  out_length = 0;
+  for (i = 0; i < nstrs; i++) {
+    const size_t slen = strlen(strs[i]);
+    if (i != 0) {
+      memcpy(out + out_length, sep, sep_len);
+      out_length += sep_len;
+    }
+    memcpy(out + out_length, strs[i], slen);
+    out_length += slen;
+  }
+  out[out_length] = 0;
+  if (final_length != nullptr) {
+    *final_length = out_length;
+  }
+  return out;
+}
+
+void gpr_strvec_init(gpr_strvec* sv) { memset(sv, 0, sizeof(*sv)); }
+
+void gpr_strvec_destroy(gpr_strvec* sv) {
+  size_t i;
+  for (i = 0; i < sv->count; i++) {
+    gpr_free(sv->strs[i]);
+  }
+  gpr_free(sv->strs);
+}
+
+void gpr_strvec_add(gpr_strvec* sv, char* str) {
+  if (sv->count == sv->capacity) {
+    sv->capacity = GPR_MAX(sv->capacity + 8, sv->capacity * 2);
+    sv->strs = static_cast<char**>(
+        gpr_realloc(sv->strs, sizeof(char*) * sv->capacity));
+  }
+  sv->strs[sv->count++] = str;
+}
+
+char* gpr_strvec_flatten(gpr_strvec* sv, size_t* final_length) {
+  return gpr_strjoin((const char**)sv->strs, sv->count, final_length);
+}
+
+int gpr_strincmp(const char* a, const char* b, size_t n) {
+  int ca, cb;
+  do {
+    ca = tolower(*a);
+    cb = tolower(*b);
+    ++a;
+    ++b;
+    --n;
+  } while (ca == cb && ca != 0 && cb != 0 && n != 0);
+  return ca - cb;
+}
+
+int gpr_stricmp(const char* a, const char* b) {
+  return gpr_strincmp(a, b, SIZE_MAX);
+}
+
+static void add_string_to_split(const char* beg, const char* end, char*** strs,
+                                size_t* nstrs, size_t* capstrs) {
+  char* out =
+      static_cast<char*>(gpr_malloc(static_cast<size_t>(end - beg) + 1));
+  memcpy(out, beg, static_cast<size_t>(end - beg));
+  out[end - beg] = 0;
+  if (*nstrs == *capstrs) {
+    *capstrs = GPR_MAX(8, 2 * *capstrs);
+    *strs = static_cast<char**>(gpr_realloc(*strs, sizeof(*strs) * *capstrs));
+  }
+  (*strs)[*nstrs] = out;
+  ++*nstrs;
+}
+
+void gpr_string_split(const char* input, const char* sep, char*** strs,
+                      size_t* nstrs) {
+  const char* next;
+  *strs = nullptr;
+  *nstrs = 0;
+  size_t capstrs = 0;
+  while ((next = strstr(input, sep))) {
+    add_string_to_split(input, next, strs, nstrs, &capstrs);
+    input = next + strlen(sep);
+  }
+  add_string_to_split(input, input + strlen(input), strs, nstrs, &capstrs);
+}
+
+void* gpr_memrchr(const void* s, int c, size_t n) {
+  if (s == nullptr) return nullptr;
+  char* b = (char*)s;
+  size_t i;
+  for (i = 0; i < n; i++) {
+    if (b[n - i - 1] == c) {
+      return &b[n - i - 1];
+    }
+  }
+  return nullptr;
+}
+
+bool gpr_parse_bool_value(const char* s, bool* dst) {
+  const char* kTrue[] = {"1", "t", "true", "y", "yes"};
+  const char* kFalse[] = {"0", "f", "false", "n", "no"};
+  static_assert(sizeof(kTrue) == sizeof(kFalse), "true_false_equal");
+
+  if (s == nullptr) {
+    return false;
+  }
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(kTrue); ++i) {
+    if (gpr_stricmp(s, kTrue[i]) == 0) {
+      *dst = true;
+      return true;
+    } else if (gpr_stricmp(s, kFalse[i]) == 0) {
+      *dst = false;
+      return true;
+    }
+  }
+  return false;  // didn't match a legal input
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.h
new file mode 100644
index 0000000..fcccf5e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_STRING_H
+#define GRPC_CORE_LIB_GPR_STRING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/* String utility functions */
+
+/* Flags for gpr_dump function. */
+#define GPR_DUMP_HEX 0x00000001
+#define GPR_DUMP_ASCII 0x00000002
+
+/* Converts array buf, of length len, into a C string according to the flags.
+   Result should be freed with gpr_free() */
+char* gpr_dump(const char* buf, size_t len, uint32_t flags);
+/* Converts array buf, of length len, into a C string according to the flags.
+   The length of the returned buffer is stored in out_len.
+   Result should be freed with gpr_free() */
+char* gpr_dump_return_len(const char* buf, size_t len, uint32_t flags,
+                          size_t* out_len);
+
+/* Parses an array of bytes into an integer (base 10). Returns 1 on success,
+   0 on failure. */
+int gpr_parse_bytes_to_uint32(const char* data, size_t length,
+                              uint32_t* result);
+
+/* Minimum buffer size for calling ltoa */
+#define GPR_LTOA_MIN_BUFSIZE (3 * sizeof(long))
+
+/* Convert a long to a string in base 10; returns the length of the
+   output string (or 0 on failure).
+   output must be at least GPR_LTOA_MIN_BUFSIZE bytes long. */
+int gpr_ltoa(long value, char* output);
+
+/* Minimum buffer size for calling int64toa */
+#define GPR_INT64TOA_MIN_BUFSIZE (3 * sizeof(int64_t))
+
+/* Convert an int64 to a string in base 10; returns the length of the
+output string (or 0 on failure).
+output must be at least GPR_INT64TOA_MIN_BUFSIZE bytes long.
+NOTE: This function ensures sufficient bit width even on Win x64,
+where long is 32bit is size.*/
+int int64_ttoa(int64_t value, char* output);
+
+// Parses a non-negative number from a value string.  Returns -1 on error.
+int gpr_parse_nonnegative_int(const char* value);
+
+/* Reverse a run of bytes */
+void gpr_reverse_bytes(char* str, int len);
+
+/* Pad a string with flag characters. The given length specifies the minimum
+   field width. The input string is never truncated. */
+char* gpr_leftpad(const char* str, char flag, size_t length);
+
+/* Join a set of strings, returning the resulting string.
+   Total combined length (excluding null terminator) is returned in total_length
+   if it is non-null. */
+char* gpr_strjoin(const char** strs, size_t nstrs, size_t* total_length);
+
+/* Join a set of strings using a separator, returning the resulting string.
+   Total combined length (excluding null terminator) is returned in total_length
+   if it is non-null. */
+char* gpr_strjoin_sep(const char** strs, size_t nstrs, const char* sep,
+                      size_t* total_length);
+
+void gpr_string_split(const char* input, const char* sep, char*** strs,
+                      size_t* nstrs);
+
+/* Returns an allocated string that represents tm according to RFC-3339, and,
+   more specifically, follows:
+   https://developers.google.com/protocol-buffers/docs/proto3#json
+
+   Uses RFC 3339, where generated output will always be Z-normalized and uses
+   0, 3, 6 or 9 fractional digits. */
+char* gpr_format_timespec(gpr_timespec);
+
+/* A vector of strings... for building up a final string one piece at a time */
+typedef struct {
+  char** strs;
+  size_t count;
+  size_t capacity;
+} gpr_strvec;
+
+/* Initialize/destroy */
+void gpr_strvec_init(gpr_strvec* strs);
+void gpr_strvec_destroy(gpr_strvec* strs);
+/* Add a string to a strvec, takes ownership of the string */
+void gpr_strvec_add(gpr_strvec* strs, char* add);
+/* Return a joined string with all added substrings, optionally setting
+   total_length as per gpr_strjoin */
+char* gpr_strvec_flatten(gpr_strvec* strs, size_t* total_length);
+
+/** Case insensitive string comparison... return <0 if lower(a)<lower(b), ==0 if
+    lower(a)==lower(b), >0 if lower(a)>lower(b) */
+int gpr_stricmp(const char* a, const char* b);
+int gpr_strincmp(const char* a, const char* b, size_t n);
+
+void* gpr_memrchr(const void* s, int c, size_t n);
+
+/* Try to parse given string into a boolean value.
+   When parsed successfully, dst will have the value and returns true.
+   Otherwise, it returns false. */
+bool gpr_parse_bool_value(const char* value, bool* dst);
+
+#endif /* GRPC_CORE_LIB_GPR_STRING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_posix.cc
new file mode 100644
index 0000000..d32775f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_posix.cc	
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_STRING
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+int gpr_asprintf(char** strp, const char* format, ...) {
+  va_list args;
+  int ret;
+  char buf[64];
+  size_t strp_buflen;
+
+  /* Use a constant-sized buffer to determine the length. */
+  va_start(args, format);
+  ret = vsnprintf(buf, sizeof(buf), format, args);
+  va_end(args);
+  if (ret < 0) {
+    *strp = nullptr;
+    return -1;
+  }
+
+  /* Allocate a new buffer, with space for the NUL terminator. */
+  strp_buflen = static_cast<size_t>(ret) + 1;
+  if ((*strp = static_cast<char*>(gpr_malloc(strp_buflen))) == nullptr) {
+    /* This shouldn't happen, because gpr_malloc() calls abort(). */
+    return -1;
+  }
+
+  /* Return early if we have all the bytes. */
+  if (strp_buflen <= sizeof(buf)) {
+    memcpy(*strp, buf, strp_buflen);
+    return ret;
+  }
+
+  /* Try again using the larger buffer. */
+  va_start(args, format);
+  ret = vsnprintf(*strp, strp_buflen, format, args);
+  va_end(args);
+  if (static_cast<size_t>(ret) == strp_buflen - 1) {
+    return ret;
+  }
+
+  /* This should never happen. */
+  gpr_free(*strp);
+  *strp = nullptr;
+  return -1;
+}
+
+#endif /* GPR_POSIX_STRING */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_util_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_util_windows.cc
new file mode 100644
index 0000000..8c8c99c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_util_windows.cc	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Posix code for gpr snprintf support. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+/* Some platforms (namely msys) need wchar to be included BEFORE
+   anything else, especially strsafe.h. */
+#include <wchar.h>
+
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <strsafe.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/string_windows.h"
+
+#if defined UNICODE || defined _UNICODE
+LPTSTR
+gpr_char_to_tchar(LPCSTR input) {
+  LPTSTR ret;
+  int needed = MultiByteToWideChar(CP_UTF8, 0, input, -1, NULL, 0);
+  if (needed <= 0) return NULL;
+  ret = (LPTSTR)gpr_malloc((unsigned)needed * sizeof(TCHAR));
+  MultiByteToWideChar(CP_UTF8, 0, input, -1, ret, needed);
+  return ret;
+}
+
+LPSTR
+gpr_tchar_to_char(LPCTSTR input) {
+  LPSTR ret;
+  int needed = WideCharToMultiByte(CP_UTF8, 0, input, -1, NULL, 0, NULL, NULL);
+  if (needed <= 0) return NULL;
+  ret = (LPSTR)gpr_malloc((unsigned)needed);
+  WideCharToMultiByte(CP_UTF8, 0, input, -1, ret, needed, NULL, NULL);
+  return ret;
+}
+#else
+LPSTR gpr_tchar_to_char(LPCTSTR input) { return (LPSTR)gpr_strdup(input); }
+
+LPTSTR gpr_char_to_tchar(LPCTSTR input) { return (LPTSTR)gpr_strdup(input); }
+#endif
+
+char* gpr_format_message(int messageid) {
+  LPTSTR tmessage;
+  char* message;
+  DWORD status = FormatMessage(
+      FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+          FORMAT_MESSAGE_IGNORE_INSERTS,
+      NULL, (DWORD)messageid, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
+      (LPTSTR)(&tmessage), 0, NULL);
+  if (status == 0) return gpr_strdup("Unable to retrieve error string");
+  message = gpr_tchar_to_char(tmessage);
+  LocalFree(tmessage);
+  return message;
+}
+
+#endif /* GPR_WINDOWS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.cc
new file mode 100644
index 0000000..25bfd41
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.cc	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Windows code for gpr snprintf support. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS_STRING
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+
+int gpr_asprintf(char** strp, const char* format, ...) {
+  va_list args;
+  int ret;
+  size_t strp_buflen;
+
+  /* Determine the length. */
+  va_start(args, format);
+  ret = _vscprintf(format, args);
+  va_end(args);
+  if (ret < 0) {
+    *strp = NULL;
+    return -1;
+  }
+
+  /* Allocate a new buffer, with space for the NUL terminator. */
+  strp_buflen = (size_t)ret + 1;
+  if ((*strp = (char*)gpr_malloc(strp_buflen)) == NULL) {
+    /* This shouldn't happen, because gpr_malloc() calls abort(). */
+    return -1;
+  }
+
+  /* Print to the buffer. */
+  va_start(args, format);
+  ret = vsnprintf_s(*strp, strp_buflen, _TRUNCATE, format, args);
+  va_end(args);
+  if ((size_t)ret == strp_buflen - 1) {
+    return ret;
+  }
+
+  /* This should never happen. */
+  gpr_free(*strp);
+  *strp = NULL;
+  return -1;
+}
+
+#endif /* GPR_WINDOWS_STRING */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.h
new file mode 100644
index 0000000..e370f80
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/string_windows.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
+#define GRPC_CORE_LIB_GPR_STRING_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+/* These allocate new strings using gpr_malloc to convert from and to utf-8. */
+LPTSTR gpr_char_to_tchar(LPCSTR input);
+LPSTR gpr_tchar_to_char(LPCTSTR input);
+
+#endif /* GPR_WINDOWS */
+
+#endif /* GRPC_CORE_LIB_GPR_STRING_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync.cc
new file mode 100644
index 0000000..2f18fc5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync.cc	
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Generic implementation of synchronization primitives. */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <assert.h>
+
+/* Number of mutexes to allocate for events, to avoid lock contention.
+   Should be a prime. */
+enum { event_sync_partitions = 31 };
+
+/* Events are partitioned by address to avoid lock contention. */
+static struct sync_array_s {
+  gpr_mu mu;
+  gpr_cv cv;
+} sync_array[event_sync_partitions];
+
+/* This routine is executed once on first use, via event_once */
+static gpr_once event_once = GPR_ONCE_INIT;
+static void event_initialize(void) {
+  int i;
+  for (i = 0; i != event_sync_partitions; i++) {
+    gpr_mu_init(&sync_array[i].mu);
+    gpr_cv_init(&sync_array[i].cv);
+  }
+}
+
+/* Hash ev into an element of sync_array[]. */
+static struct sync_array_s* hash(gpr_event* ev) {
+  return &sync_array[((uintptr_t)ev) % event_sync_partitions];
+}
+
+void gpr_event_init(gpr_event* ev) {
+  gpr_once_init(&event_once, &event_initialize);
+  ev->state = 0;
+}
+
+void gpr_event_set(gpr_event* ev, void* value) {
+  struct sync_array_s* s = hash(ev);
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(gpr_atm_acq_load(&ev->state) == 0);
+  gpr_atm_rel_store(&ev->state, (gpr_atm)value);
+  gpr_cv_broadcast(&s->cv);
+  gpr_mu_unlock(&s->mu);
+  GPR_ASSERT(value != nullptr);
+}
+
+void* gpr_event_get(gpr_event* ev) {
+  return (void*)gpr_atm_acq_load(&ev->state);
+}
+
+void* gpr_event_wait(gpr_event* ev, gpr_timespec abs_deadline) {
+  void* result = (void*)gpr_atm_acq_load(&ev->state);
+  if (result == nullptr) {
+    struct sync_array_s* s = hash(ev);
+    gpr_mu_lock(&s->mu);
+    do {
+      result = (void*)gpr_atm_acq_load(&ev->state);
+    } while (result == nullptr && !gpr_cv_wait(&s->cv, &s->mu, abs_deadline));
+    gpr_mu_unlock(&s->mu);
+  }
+  return result;
+}
+
+void gpr_ref_init(gpr_refcount* r, int n) { gpr_atm_rel_store(&r->count, n); }
+
+void gpr_ref(gpr_refcount* r) { gpr_atm_no_barrier_fetch_add(&r->count, 1); }
+
+void gpr_ref_non_zero(gpr_refcount* r) {
+#ifndef NDEBUG
+  gpr_atm prior = gpr_atm_no_barrier_fetch_add(&r->count, 1);
+  assert(prior > 0);
+#else
+  gpr_ref(r);
+#endif
+}
+
+void gpr_refn(gpr_refcount* r, int n) {
+  gpr_atm_no_barrier_fetch_add(&r->count, n);
+}
+
+int gpr_unref(gpr_refcount* r) {
+  gpr_atm prior = gpr_atm_full_fetch_add(&r->count, -1);
+  GPR_ASSERT(prior > 0);
+  return prior == 1;
+}
+
+int gpr_ref_is_unique(gpr_refcount* r) {
+  return gpr_atm_acq_load(&r->count) == 1;
+}
+
+void gpr_stats_init(gpr_stats_counter* c, intptr_t n) {
+  gpr_atm_rel_store(&c->value, n);
+}
+
+void gpr_stats_inc(gpr_stats_counter* c, intptr_t inc) {
+  gpr_atm_no_barrier_fetch_add(&c->value, inc);
+}
+
+intptr_t gpr_stats_read(const gpr_stats_counter* c) {
+  /* don't need acquire-load, but we have no no-barrier load yet */
+  return gpr_atm_acq_load(&c->value);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_abseil.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_abseil.cc
new file mode 100644
index 0000000..2a1ca05
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_abseil.cc	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if defined(GPR_ABSEIL_SYNC) && !defined(GPR_CUSTOM_SYNC)
+
+#include <grpc/support/alloc.h>
+
+#include <errno.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <time.h>
+#include "src/core/lib/profiling/timers.h"
+
+#include "absl/base/call_once.h"
+#include "absl/synchronization/mutex.h"
+#include "absl/time/clock.h"
+#include "absl/time/time.h"
+
+#ifdef GPR_LOW_LEVEL_COUNTERS
+gpr_atm gpr_mu_locks = 0;
+gpr_atm gpr_counter_atm_cas = 0;
+gpr_atm gpr_counter_atm_add = 0;
+#endif
+
+void gpr_mu_init(gpr_mu* mu) {
+  static_assert(sizeof(gpr_mu) == sizeof(absl::Mutex),
+                "gpr_mu and Mutex must be the same size");
+  new (mu) absl::Mutex;
+}
+
+void gpr_mu_destroy(gpr_mu* mu) {
+  reinterpret_cast<absl::Mutex*>(mu)->~Mutex();
+}
+
+void gpr_mu_lock(gpr_mu* mu) ABSL_NO_THREAD_SAFETY_ANALYSIS {
+  GPR_TIMER_SCOPE("gpr_mu_lock", 0);
+  reinterpret_cast<absl::Mutex*>(mu)->Lock();
+}
+
+void gpr_mu_unlock(gpr_mu* mu) ABSL_NO_THREAD_SAFETY_ANALYSIS {
+  GPR_TIMER_SCOPE("gpr_mu_unlock", 0);
+  reinterpret_cast<absl::Mutex*>(mu)->Unlock();
+}
+
+int gpr_mu_trylock(gpr_mu* mu) {
+  GPR_TIMER_SCOPE("gpr_mu_trylock", 0);
+  int ret = reinterpret_cast<absl::Mutex*>(mu)->TryLock() == true;
+  return ret;
+}
+
+/*----------------------------------------*/
+
+void gpr_cv_init(gpr_cv* cv) {
+  static_assert(sizeof(gpr_cv) == sizeof(absl::CondVar),
+                "gpr_cv and CondVar must be the same size");
+  new (cv) absl::CondVar;
+}
+
+void gpr_cv_destroy(gpr_cv* cv) {
+  reinterpret_cast<absl::CondVar*>(cv)->~CondVar();
+}
+
+int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) {
+  GPR_TIMER_SCOPE("gpr_cv_wait", 0);
+  if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) ==
+      0) {
+    reinterpret_cast<absl::CondVar*>(cv)->Wait(
+        reinterpret_cast<absl::Mutex*>(mu));
+    return 0;
+  }
+  abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME);
+  timespec ts = {static_cast<decltype(ts.tv_sec)>(abs_deadline.tv_sec),
+                 static_cast<decltype(ts.tv_nsec)>(abs_deadline.tv_nsec)};
+  int ret = reinterpret_cast<absl::CondVar*>(cv)->WaitWithDeadline(
+                reinterpret_cast<absl::Mutex*>(mu),
+                absl::TimeFromTimespec(ts)) == true;
+  return ret;
+}
+
+void gpr_cv_signal(gpr_cv* cv) {
+  GPR_TIMER_MARK("gpr_cv_signal", 0);
+  reinterpret_cast<absl::CondVar*>(cv)->Signal();
+}
+
+void gpr_cv_broadcast(gpr_cv* cv) {
+  GPR_TIMER_MARK("gpr_cv_broadcast", 0);
+  reinterpret_cast<absl::CondVar*>(cv)->SignalAll();
+}
+
+/*----------------------------------------*/
+
+void gpr_once_init(gpr_once* once, void (*init_function)(void)) {
+  absl::call_once(*reinterpret_cast<absl::once_flag*>(once), init_function);
+}
+
+#endif /* defined(GPR_ABSEIL_SYNC) && !defined(GPR_CUSTOM_SYNC) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_posix.cc
new file mode 100644
index 0000000..120bfda
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_posix.cc	
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if defined(GPR_POSIX_SYNC) && !defined(GPR_ABSEIL_SYNC) && \
+    !defined(GPR_CUSTOM_SYNC)
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include <errno.h>
+#include <time.h>
+
+#include "src/core/lib/profiling/timers.h"
+
+#ifdef GPR_LOW_LEVEL_COUNTERS
+gpr_atm gpr_mu_locks = 0;
+gpr_atm gpr_counter_atm_cas = 0;
+gpr_atm gpr_counter_atm_add = 0;
+#endif
+
+void gpr_mu_init(gpr_mu* mu) {
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_mutex_init(&mu->mutex, nullptr) == 0);
+  mu->leak_checker = static_cast<int*>(malloc(sizeof(*mu->leak_checker)));
+  GPR_ASSERT(mu->leak_checker != nullptr);
+#else
+  GPR_ASSERT(pthread_mutex_init(mu, nullptr) == 0);
+#endif
+}
+
+void gpr_mu_destroy(gpr_mu* mu) {
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_mutex_destroy(&mu->mutex) == 0);
+  free(mu->leak_checker);
+#else
+  GPR_ASSERT(pthread_mutex_destroy(mu) == 0);
+#endif
+}
+
+void gpr_mu_lock(gpr_mu* mu) {
+#ifdef GPR_LOW_LEVEL_COUNTERS
+  GPR_ATM_INC_COUNTER(gpr_mu_locks);
+#endif
+  GPR_TIMER_SCOPE("gpr_mu_lock", 0);
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_mutex_lock(&mu->mutex) == 0);
+#else
+  GPR_ASSERT(pthread_mutex_lock(mu) == 0);
+#endif
+}
+
+void gpr_mu_unlock(gpr_mu* mu) {
+  GPR_TIMER_SCOPE("gpr_mu_unlock", 0);
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_mutex_unlock(&mu->mutex) == 0);
+#else
+  GPR_ASSERT(pthread_mutex_unlock(mu) == 0);
+#endif
+}
+
+int gpr_mu_trylock(gpr_mu* mu) {
+  GPR_TIMER_SCOPE("gpr_mu_trylock", 0);
+  int err = 0;
+#ifdef GRPC_ASAN_ENABLED
+  err = pthread_mutex_trylock(&mu->mutex);
+#else
+  err = pthread_mutex_trylock(mu);
+#endif
+  GPR_ASSERT(err == 0 || err == EBUSY);
+  return err == 0;
+}
+
+/*----------------------------------------*/
+
+void gpr_cv_init(gpr_cv* cv) {
+  pthread_condattr_t attr;
+  GPR_ASSERT(pthread_condattr_init(&attr) == 0);
+#if GPR_LINUX
+  GPR_ASSERT(pthread_condattr_setclock(&attr, CLOCK_MONOTONIC) == 0);
+#endif  // GPR_LINUX
+
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_cond_init(&cv->cond_var, &attr) == 0);
+  cv->leak_checker = static_cast<int*>(malloc(sizeof(*cv->leak_checker)));
+  GPR_ASSERT(cv->leak_checker != nullptr);
+#else
+  GPR_ASSERT(pthread_cond_init(cv, &attr) == 0);
+#endif
+}
+
+void gpr_cv_destroy(gpr_cv* cv) {
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_cond_destroy(&cv->cond_var) == 0);
+  free(cv->leak_checker);
+#else
+  GPR_ASSERT(pthread_cond_destroy(cv) == 0);
+#endif
+}
+
+#define gpr_convert_clock_type_debug(t, clock_type, now1, now2, add_result, \
+                                     sub_result)                            \
+  gpr_convert_clock_type((t), (clock_type))
+
+int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) {
+  int err = 0;
+  if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) ==
+      0) {
+#ifdef GRPC_ASAN_ENABLED
+    err = pthread_cond_wait(&cv->cond_var, &mu->mutex);
+#else
+    err = pthread_cond_wait(cv, mu);
+#endif
+  } else {
+    struct timespec abs_deadline_ts;
+#if GPR_LINUX
+    abs_deadline = gpr_convert_clock_type_debug(
+        abs_deadline, GPR_CLOCK_MONOTONIC, now1, now2, add_result, sub_result);
+#else
+    abs_deadline = gpr_convert_clock_type_debug(
+        abs_deadline, GPR_CLOCK_REALTIME, now1, now2, add_result, sub_result);
+#endif  // GPR_LINUX
+    abs_deadline_ts.tv_sec = static_cast<time_t>(abs_deadline.tv_sec);
+    abs_deadline_ts.tv_nsec = abs_deadline.tv_nsec;
+#ifdef GRPC_ASAN_ENABLED
+    err = pthread_cond_timedwait(&cv->cond_var, &mu->mutex, &abs_deadline_ts);
+#else
+    err = pthread_cond_timedwait(cv, mu, &abs_deadline_ts);
+#endif
+  }
+  GPR_ASSERT(err == 0 || err == ETIMEDOUT || err == EAGAIN);
+  return err == ETIMEDOUT;
+}
+
+void gpr_cv_signal(gpr_cv* cv) {
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_cond_signal(&cv->cond_var) == 0);
+#else
+  GPR_ASSERT(pthread_cond_signal(cv) == 0);
+#endif
+}
+
+void gpr_cv_broadcast(gpr_cv* cv) {
+#ifdef GRPC_ASAN_ENABLED
+  GPR_ASSERT(pthread_cond_broadcast(&cv->cond_var) == 0);
+#else
+  GPR_ASSERT(pthread_cond_broadcast(cv) == 0);
+#endif
+}
+
+/*----------------------------------------*/
+
+void gpr_once_init(gpr_once* once, void (*init_function)(void)) {
+  GPR_ASSERT(pthread_once(once, init_function) == 0);
+}
+
+#endif /* defined(GPR_POSIX_SYNC) && !defined(GPR_ABSEIL_SYNC) && \
+          !defined(GPR_CUSTOM_SYNC) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_windows.cc
new file mode 100644
index 0000000..64eec7c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/sync_windows.cc	
@@ -0,0 +1,120 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Win32 code for gpr synchronization support. */
+
+#include <grpc/support/port_platform.h>
+
+#if defined(GPR_WINDOWS) && !defined(GPR_ABSEIL_SYNC) && \
+    !defined(GPR_CUSTOM_SYNC)
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+void gpr_mu_init(gpr_mu* mu) {
+  InitializeCriticalSection(&mu->cs);
+  mu->locked = 0;
+}
+
+void gpr_mu_destroy(gpr_mu* mu) { DeleteCriticalSection(&mu->cs); }
+
+void gpr_mu_lock(gpr_mu* mu) {
+  EnterCriticalSection(&mu->cs);
+  GPR_ASSERT(!mu->locked);
+  mu->locked = 1;
+}
+
+void gpr_mu_unlock(gpr_mu* mu) {
+  mu->locked = 0;
+  LeaveCriticalSection(&mu->cs);
+}
+
+int gpr_mu_trylock(gpr_mu* mu) {
+  int result = TryEnterCriticalSection(&mu->cs);
+  if (result) {
+    if (mu->locked) {                /* This thread already holds the lock. */
+      LeaveCriticalSection(&mu->cs); /* Decrement lock count. */
+      result = 0;                    /* Indicate failure */
+    }
+    mu->locked = 1;
+  }
+  return result;
+}
+
+/*----------------------------------------*/
+
+void gpr_cv_init(gpr_cv* cv) { InitializeConditionVariable(cv); }
+
+void gpr_cv_destroy(gpr_cv* cv) {
+  /* Condition variables don't need destruction in Win32. */
+}
+
+int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) {
+  int timeout = 0;
+  DWORD timeout_max_ms;
+  mu->locked = 0;
+  if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) ==
+      0) {
+    SleepConditionVariableCS(cv, &mu->cs, INFINITE);
+  } else {
+    abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME);
+    gpr_timespec now = gpr_now(abs_deadline.clock_type);
+    int64_t now_ms = (int64_t)now.tv_sec * 1000 + now.tv_nsec / 1000000;
+    int64_t deadline_ms =
+        (int64_t)abs_deadline.tv_sec * 1000 + abs_deadline.tv_nsec / 1000000;
+    if (now_ms >= deadline_ms) {
+      timeout = 1;
+    } else {
+      if ((deadline_ms - now_ms) >= INFINITE) {
+        timeout_max_ms = INFINITE - 1;
+      } else {
+        timeout_max_ms = (DWORD)(deadline_ms - now_ms);
+      }
+      timeout = (SleepConditionVariableCS(cv, &mu->cs, timeout_max_ms) == 0 &&
+                 GetLastError() == ERROR_TIMEOUT);
+    }
+  }
+  mu->locked = 1;
+  return timeout;
+}
+
+void gpr_cv_signal(gpr_cv* cv) { WakeConditionVariable(cv); }
+
+void gpr_cv_broadcast(gpr_cv* cv) { WakeAllConditionVariable(cv); }
+
+/*----------------------------------------*/
+
+static void* dummy;
+struct run_once_func_arg {
+  void (*init_function)(void);
+};
+static BOOL CALLBACK run_once_func(gpr_once* once, void* v, void** pv) {
+  struct run_once_func_arg* arg = (struct run_once_func_arg*)v;
+  (*arg->init_function)();
+  return 1;
+}
+
+void gpr_once_init(gpr_once* once, void (*init_function)(void)) {
+  struct run_once_func_arg arg;
+  arg.init_function = init_function;
+  InitOnceExecuteOnce(once, run_once_func, &arg, &dummy);
+}
+
+#endif /* defined(GPR_WINDOWS) && !defined(GPR_ABSEIL_SYNC) && \
+          !defined(GPR_CUSTOM_SYNC) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time.cc
new file mode 100644
index 0000000..8927dab
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time.cc	
@@ -0,0 +1,259 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Generic implementation of time calls. */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+int gpr_time_cmp(gpr_timespec a, gpr_timespec b) {
+  int cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec);
+  GPR_ASSERT(a.clock_type == b.clock_type);
+  if (cmp == 0 && a.tv_sec != INT64_MAX && a.tv_sec != INT64_MIN) {
+    cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec);
+  }
+  return cmp;
+}
+
+gpr_timespec gpr_time_min(gpr_timespec a, gpr_timespec b) {
+  return gpr_time_cmp(a, b) < 0 ? a : b;
+}
+
+gpr_timespec gpr_time_max(gpr_timespec a, gpr_timespec b) {
+  return gpr_time_cmp(a, b) > 0 ? a : b;
+}
+
+gpr_timespec gpr_time_0(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = 0;
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
+
+gpr_timespec gpr_inf_future(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = INT64_MAX;
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
+
+gpr_timespec gpr_inf_past(gpr_clock_type type) {
+  gpr_timespec out;
+  out.tv_sec = INT64_MIN;
+  out.tv_nsec = 0;
+  out.clock_type = type;
+  return out;
+}
+
+static gpr_timespec to_seconds_from_sub_second_time(int64_t time_in_units,
+                                                    int64_t units_per_sec,
+                                                    gpr_clock_type type) {
+  gpr_timespec out;
+  if (time_in_units == INT64_MAX) {
+    out = gpr_inf_future(type);
+  } else if (time_in_units == INT64_MIN) {
+    out = gpr_inf_past(type);
+  } else {
+    if (time_in_units >= 0) {
+      out.tv_sec = time_in_units / units_per_sec;
+    } else {
+      out.tv_sec = (-((units_per_sec - 1) - (time_in_units + units_per_sec)) /
+                    units_per_sec) -
+                   1;
+    }
+    out.tv_nsec =
+        static_cast<int32_t>((time_in_units - out.tv_sec * units_per_sec) *
+                             GPR_NS_PER_SEC / units_per_sec);
+    out.clock_type = type;
+  }
+  return out;
+}
+
+static gpr_timespec to_seconds_from_above_second_time(int64_t time_in_units,
+                                                      int64_t secs_per_unit,
+                                                      gpr_clock_type type) {
+  gpr_timespec out;
+  if (time_in_units >= INT64_MAX / secs_per_unit) {
+    out = gpr_inf_future(type);
+  } else if (time_in_units <= INT64_MIN / secs_per_unit) {
+    out = gpr_inf_past(type);
+  } else {
+    out.tv_sec = time_in_units * secs_per_unit;
+    out.tv_nsec = 0;
+    out.clock_type = type;
+  }
+  return out;
+}
+
+gpr_timespec gpr_time_from_nanos(int64_t ns, gpr_clock_type type) {
+  return to_seconds_from_sub_second_time(ns, GPR_NS_PER_SEC, type);
+}
+
+gpr_timespec gpr_time_from_micros(int64_t us, gpr_clock_type type) {
+  return to_seconds_from_sub_second_time(us, GPR_US_PER_SEC, type);
+}
+
+gpr_timespec gpr_time_from_millis(int64_t ms, gpr_clock_type type) {
+  return to_seconds_from_sub_second_time(ms, GPR_MS_PER_SEC, type);
+}
+
+gpr_timespec gpr_time_from_seconds(int64_t s, gpr_clock_type type) {
+  return to_seconds_from_sub_second_time(s, 1, type);
+}
+
+gpr_timespec gpr_time_from_minutes(int64_t m, gpr_clock_type type) {
+  return to_seconds_from_above_second_time(m, 60, type);
+}
+
+gpr_timespec gpr_time_from_hours(int64_t h, gpr_clock_type type) {
+  return to_seconds_from_above_second_time(h, 3600, type);
+}
+
+gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b) {
+  gpr_timespec sum;
+  int64_t inc = 0;
+  GPR_ASSERT(b.clock_type == GPR_TIMESPAN);
+  // tv_nsec in a timespan is always +ve. -ve timespan is represented as (-ve
+  // tv_sec, +ve tv_nsec). For example, timespan = -2.5 seconds is represented
+  // as {-3, 5e8, GPR_TIMESPAN}
+  GPR_ASSERT(b.tv_nsec >= 0);
+  sum.clock_type = a.clock_type;
+  sum.tv_nsec = a.tv_nsec + b.tv_nsec;
+  if (sum.tv_nsec >= GPR_NS_PER_SEC) {
+    sum.tv_nsec -= GPR_NS_PER_SEC;
+    inc++;
+  }
+  if (a.tv_sec == INT64_MAX || a.tv_sec == INT64_MIN) {
+    sum = a;
+  } else if (b.tv_sec == INT64_MAX ||
+             (b.tv_sec >= 0 && a.tv_sec >= INT64_MAX - b.tv_sec)) {
+    sum = gpr_inf_future(sum.clock_type);
+  } else if (b.tv_sec == INT64_MIN ||
+             (b.tv_sec <= 0 && a.tv_sec <= INT64_MIN - b.tv_sec)) {
+    sum = gpr_inf_past(sum.clock_type);
+  } else {
+    sum.tv_sec = a.tv_sec + b.tv_sec;
+    if (inc != 0 && sum.tv_sec == INT64_MAX - 1) {
+      sum = gpr_inf_future(sum.clock_type);
+    } else {
+      sum.tv_sec += inc;
+    }
+  }
+  return sum;
+}
+
+gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b) {
+  gpr_timespec diff;
+  int64_t dec = 0;
+  if (b.clock_type == GPR_TIMESPAN) {
+    diff.clock_type = a.clock_type;
+    // tv_nsec in a timespan is always +ve. -ve timespan is represented as (-ve
+    // tv_sec, +ve tv_nsec). For example, timespan = -2.5 seconds is represented
+    // as {-3, 5e8, GPR_TIMESPAN}
+    GPR_ASSERT(b.tv_nsec >= 0);
+  } else {
+    GPR_ASSERT(a.clock_type == b.clock_type);
+    diff.clock_type = GPR_TIMESPAN;
+  }
+  diff.tv_nsec = a.tv_nsec - b.tv_nsec;
+  if (diff.tv_nsec < 0) {
+    diff.tv_nsec += GPR_NS_PER_SEC;
+    dec++;
+  }
+  if (a.tv_sec == INT64_MAX || a.tv_sec == INT64_MIN) {
+    diff = a;
+  } else if (b.tv_sec == INT64_MIN ||
+             (b.tv_sec <= 0 && a.tv_sec >= INT64_MAX + b.tv_sec)) {
+    diff = gpr_inf_future(GPR_CLOCK_REALTIME);
+  } else if (b.tv_sec == INT64_MAX ||
+             (b.tv_sec >= 0 && a.tv_sec <= INT64_MIN + b.tv_sec)) {
+    diff = gpr_inf_past(GPR_CLOCK_REALTIME);
+  } else {
+    diff.tv_sec = a.tv_sec - b.tv_sec;
+    if (dec != 0 && diff.tv_sec == INT64_MIN + 1) {
+      diff = gpr_inf_past(GPR_CLOCK_REALTIME);
+    } else {
+      diff.tv_sec -= dec;
+    }
+  }
+  return diff;
+}
+
+int gpr_time_similar(gpr_timespec a, gpr_timespec b, gpr_timespec threshold) {
+  int cmp_ab;
+
+  GPR_ASSERT(a.clock_type == b.clock_type);
+  GPR_ASSERT(threshold.clock_type == GPR_TIMESPAN);
+
+  cmp_ab = gpr_time_cmp(a, b);
+  if (cmp_ab == 0) return 1;
+  if (cmp_ab < 0) {
+    return gpr_time_cmp(gpr_time_sub(b, a), threshold) <= 0;
+  } else {
+    return gpr_time_cmp(gpr_time_sub(a, b), threshold) <= 0;
+  }
+}
+
+int32_t gpr_time_to_millis(gpr_timespec t) {
+  if (t.tv_sec >= 2147483) {
+    if (t.tv_sec == 2147483 && t.tv_nsec < 648 * GPR_NS_PER_MS) {
+      return 2147483 * GPR_MS_PER_SEC + t.tv_nsec / GPR_NS_PER_MS;
+    }
+    return 2147483647;
+  } else if (t.tv_sec <= -2147483) {
+    /* TODO(ctiller): correct handling here (it's so far in the past do we
+       care?) */
+    return -2147483647;
+  } else {
+    return static_cast<int32_t>(t.tv_sec * GPR_MS_PER_SEC +
+                                t.tv_nsec / GPR_NS_PER_MS);
+  }
+}
+
+double gpr_timespec_to_micros(gpr_timespec t) {
+  return static_cast<double>(t.tv_sec) * GPR_US_PER_SEC + t.tv_nsec * 1e-3;
+}
+
+gpr_timespec gpr_convert_clock_type(gpr_timespec t, gpr_clock_type clock_type) {
+  if (t.clock_type == clock_type) {
+    return t;
+  }
+
+  if (t.tv_sec == INT64_MAX || t.tv_sec == INT64_MIN) {
+    t.clock_type = clock_type;
+    return t;
+  }
+
+  if (clock_type == GPR_TIMESPAN) {
+    return gpr_time_sub(t, gpr_now(t.clock_type));
+  }
+
+  if (t.clock_type == GPR_TIMESPAN) {
+    return gpr_time_add(gpr_now(clock_type), t);
+  }
+
+  return gpr_time_add(gpr_now(clock_type),
+                      gpr_time_sub(t, gpr_now(t.clock_type)));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_posix.cc
new file mode 100644
index 0000000..b5a4767
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_posix.cc	
@@ -0,0 +1,186 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gpr/time_precise.h"
+
+#ifdef GPR_POSIX_TIME
+
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#ifdef __linux__
+#include <sys/syscall.h>
+#endif
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+static struct timespec timespec_from_gpr(gpr_timespec gts) {
+  struct timespec rv;
+  if (sizeof(time_t) < sizeof(int64_t)) {
+    /* fine to assert, as this is only used in gpr_sleep_until */
+    GPR_ASSERT(gts.tv_sec <= INT32_MAX && gts.tv_sec >= INT32_MIN);
+  }
+  rv.tv_sec = static_cast<time_t>(gts.tv_sec);
+  rv.tv_nsec = gts.tv_nsec;
+  return rv;
+}
+
+#if _POSIX_TIMERS > 0 || defined(__OpenBSD__)
+static gpr_timespec gpr_from_timespec(struct timespec ts,
+                                      gpr_clock_type clock_type) {
+  /*
+   * timespec.tv_sec can have smaller size than gpr_timespec.tv_sec,
+   * but we are only using this function to implement gpr_now
+   * so there's no need to handle "infinity" values.
+   */
+  gpr_timespec rv;
+  rv.tv_sec = ts.tv_sec;
+  rv.tv_nsec = static_cast<int32_t>(ts.tv_nsec);
+  rv.clock_type = clock_type;
+  return rv;
+}
+
+/** maps gpr_clock_type --> clockid_t for clock_gettime */
+static const clockid_t clockid_for_gpr_clock[] = {CLOCK_MONOTONIC,
+                                                  CLOCK_REALTIME};
+
+void gpr_time_init(void) { gpr_precise_clock_init(); }
+
+static gpr_timespec now_impl(gpr_clock_type clock_type) {
+  struct timespec now;
+  GPR_ASSERT(clock_type != GPR_TIMESPAN);
+  if (clock_type == GPR_CLOCK_PRECISE) {
+    gpr_timespec ret;
+    gpr_precise_clock_now(&ret);
+    return ret;
+  } else {
+#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE) && defined(__linux__)
+    /* avoid ABI problems by invoking syscalls directly */
+    syscall(SYS_clock_gettime, clockid_for_gpr_clock[clock_type], &now);
+#else
+    clock_gettime(clockid_for_gpr_clock[clock_type], &now);
+#endif
+    return gpr_from_timespec(now, clock_type);
+  }
+}
+#else
+  /* For some reason Apple's OSes haven't implemented clock_gettime. */
+
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#include <sys/time.h>
+
+static double g_time_scale;
+static uint64_t g_time_start;
+
+void gpr_time_init(void) {
+  mach_timebase_info_data_t tb = {0, 1};
+  gpr_precise_clock_init();
+  mach_timebase_info(&tb);
+  g_time_scale = tb.numer;
+  g_time_scale /= tb.denom;
+  g_time_start = mach_absolute_time();
+}
+
+static gpr_timespec now_impl(gpr_clock_type clock) {
+  gpr_timespec now;
+  struct timeval now_tv;
+  double now_dbl;
+
+  now.clock_type = clock;
+  switch (clock) {
+    case GPR_CLOCK_REALTIME:
+      // gettimeofday(...) function may return with a value whose tv_usec is
+      // greater than 1e6 on iOS The case is resolved with the guard at end of
+      // this function.
+      gettimeofday(&now_tv, nullptr);
+      now.tv_sec = now_tv.tv_sec;
+      now.tv_nsec = now_tv.tv_usec * 1000;
+      break;
+    case GPR_CLOCK_MONOTONIC:
+      now_dbl = ((double)(mach_absolute_time() - g_time_start)) * g_time_scale;
+      now.tv_sec = (int64_t)(now_dbl * 1e-9);
+      now.tv_nsec = (int32_t)(now_dbl - ((double)now.tv_sec) * 1e9);
+      break;
+    case GPR_CLOCK_PRECISE:
+      gpr_precise_clock_now(&now);
+      break;
+    case GPR_TIMESPAN:
+      abort();
+  }
+
+  // Guard the tv_nsec field in valid range for all clock types
+  while (GPR_UNLIKELY(now.tv_nsec >= 1e9)) {
+    now.tv_sec++;
+    now.tv_nsec -= 1e9;
+  }
+  while (GPR_UNLIKELY(now.tv_nsec < 0)) {
+    now.tv_sec--;
+    now.tv_nsec += 1e9;
+  }
+
+  return now;
+}
+#endif
+
+gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type) = now_impl;
+
+#ifdef GPR_LOW_LEVEL_COUNTERS
+gpr_atm gpr_now_call_count;
+#endif
+gpr_timespec gpr_now(gpr_clock_type clock_type) {
+#ifdef GPR_LOW_LEVEL_COUNTERS
+  __atomic_fetch_add(&gpr_now_call_count, 1, __ATOMIC_RELAXED);
+#endif
+  // validate clock type
+  GPR_ASSERT(clock_type == GPR_CLOCK_MONOTONIC ||
+             clock_type == GPR_CLOCK_REALTIME ||
+             clock_type == GPR_CLOCK_PRECISE);
+  gpr_timespec ts = gpr_now_impl(clock_type);
+  // tv_nsecs must be in the range [0, 1e9).
+  GPR_ASSERT(ts.tv_nsec >= 0 && ts.tv_nsec < 1e9);
+  return ts;
+}
+
+void gpr_sleep_until(gpr_timespec until) {
+  gpr_timespec now;
+  gpr_timespec delta;
+  struct timespec delta_ts;
+  int ns_result;
+
+  for (;;) {
+    /* We could simplify by using clock_nanosleep instead, but it might be
+     * slightly less portable. */
+    now = gpr_now(until.clock_type);
+    if (gpr_time_cmp(until, now) <= 0) {
+      return;
+    }
+
+    delta = gpr_time_sub(until, now);
+    delta_ts = timespec_from_gpr(delta);
+    ns_result = nanosleep(&delta_ts, nullptr);
+    if (ns_result == 0) {
+      break;
+    }
+  }
+}
+
+#endif /* GPR_POSIX_TIME */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.cc
new file mode 100644
index 0000000..e40228d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.cc	
@@ -0,0 +1,165 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if GPR_LINUX
+#include <fcntl.h>
+#include <unistd.h>
+#endif
+
+#include <algorithm>
+
+#include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/time_precise.h"
+
+#if GPR_CYCLE_COUNTER_RDTSC_32 || GPR_CYCLE_COUNTER_RDTSC_64
+#if GPR_LINUX
+static bool read_freq_from_kernel(double* freq) {
+  // Google production kernel export the frequency for us in kHz.
+  int fd = open("/sys/devices/system/cpu/cpu0/tsc_freq_khz", O_RDONLY);
+  if (fd == -1) {
+    return false;
+  }
+  char line[1024] = {};
+  char* err;
+  bool ret = false;
+  int len = read(fd, line, sizeof(line) - 1);
+  if (len > 0) {
+    const long val = strtol(line, &err, 10);
+    if (line[0] != '\0' && (*err == '\n' || *err == '\0')) {
+      *freq = val * 1e3;  // Value is kHz.
+      ret = true;
+    }
+  }
+  close(fd);
+  return ret;
+}
+#endif /* GPR_LINUX */
+
+static double cycles_per_second = 0;
+static gpr_cycle_counter start_cycle;
+
+static bool is_fake_clock() {
+  gpr_timespec start = gpr_now(GPR_CLOCK_MONOTONIC);
+  int64_t sum = 0;
+  for (int i = 0; i < 8; ++i) {
+    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+    gpr_timespec delta = gpr_time_sub(now, start);
+    sum += delta.tv_sec * GPR_NS_PER_SEC + delta.tv_nsec;
+  }
+  // If the clock doesn't move even a nano after 8 tries, it's a fake one.
+  return sum == 0;
+}
+
+void gpr_precise_clock_init(void) {
+  gpr_log(GPR_DEBUG, "Calibrating timers");
+
+#if GPR_LINUX
+  if (read_freq_from_kernel(&cycles_per_second)) {
+    start_cycle = gpr_get_cycle_counter();
+    return;
+  }
+#endif /* GPR_LINUX */
+
+  if (is_fake_clock()) {
+    cycles_per_second = 1;
+    start_cycle = 0;
+    return;
+  }
+  // Start from a loop of 1ms, and gradually increase the loop duration
+  // until we either converge or we have passed 255ms (1ms+2ms+...+128ms).
+  int64_t measurement_ns = GPR_NS_PER_MS;
+  double last_freq = -1;
+  bool converged = false;
+  for (int i = 0; i < 8 && !converged; ++i, measurement_ns *= 2) {
+    start_cycle = gpr_get_cycle_counter();
+    int64_t loop_ns;
+    gpr_timespec start = gpr_now(GPR_CLOCK_MONOTONIC);
+    do {
+      // TODO(soheil): Maybe sleep instead of busy polling.
+      gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+      gpr_timespec delta = gpr_time_sub(now, start);
+      loop_ns = delta.tv_sec * GPR_NS_PER_SEC + delta.tv_nsec;
+    } while (loop_ns < measurement_ns);
+    gpr_cycle_counter end_cycle = gpr_get_cycle_counter();
+    // Frequency should be in Hz.
+    const double freq =
+        static_cast<double>(end_cycle - start_cycle) / loop_ns * GPR_NS_PER_SEC;
+    converged =
+        last_freq != -1 && (freq * 0.99 < last_freq && last_freq < freq * 1.01);
+    last_freq = freq;
+  }
+  cycles_per_second = last_freq;
+  gpr_log(GPR_DEBUG, "... cycles_per_second = %f\n", cycles_per_second);
+}
+
+gpr_timespec gpr_cycle_counter_to_time(gpr_cycle_counter cycles) {
+  const double secs =
+      static_cast<double>(cycles - start_cycle) / cycles_per_second;
+  gpr_timespec ts;
+  ts.tv_sec = static_cast<int64_t>(secs);
+  ts.tv_nsec = static_cast<int32_t>(GPR_NS_PER_SEC *
+                                    (secs - static_cast<double>(ts.tv_sec)));
+  ts.clock_type = GPR_CLOCK_PRECISE;
+  return ts;
+}
+
+gpr_timespec gpr_cycle_counter_sub(gpr_cycle_counter a, gpr_cycle_counter b) {
+  const double secs = static_cast<double>(a - b) / cycles_per_second;
+  gpr_timespec ts;
+  ts.tv_sec = static_cast<int64_t>(secs);
+  ts.tv_nsec = static_cast<int32_t>(GPR_NS_PER_SEC *
+                                    (secs - static_cast<double>(ts.tv_sec)));
+  ts.clock_type = GPR_TIMESPAN;
+  return ts;
+}
+
+void gpr_precise_clock_now(gpr_timespec* clk) {
+  int64_t counter = gpr_get_cycle_counter();
+  *clk = gpr_cycle_counter_to_time(counter);
+}
+#elif GPR_CYCLE_COUNTER_FALLBACK
+void gpr_precise_clock_init(void) {}
+
+gpr_cycle_counter gpr_get_cycle_counter() {
+  gpr_timespec ts = gpr_now(GPR_CLOCK_REALTIME);
+  return gpr_timespec_to_micros(ts);
+}
+
+gpr_timespec gpr_cycle_counter_to_time(gpr_cycle_counter cycles) {
+  gpr_timespec ts;
+  ts.tv_sec = cycles / GPR_US_PER_SEC;
+  ts.tv_nsec = (cycles - ts.tv_sec * GPR_US_PER_SEC) * GPR_NS_PER_US;
+  ts.clock_type = GPR_CLOCK_PRECISE;
+  return ts;
+}
+
+void gpr_precise_clock_now(gpr_timespec* clk) {
+  *clk = gpr_now(GPR_CLOCK_REALTIME);
+  clk->clock_type = GPR_CLOCK_PRECISE;
+}
+
+gpr_timespec gpr_cycle_counter_sub(gpr_cycle_counter a, gpr_cycle_counter b) {
+  return gpr_time_sub(gpr_cycle_counter_to_time(a),
+                      gpr_cycle_counter_to_time(b));
+}
+#endif /* GPR_CYCLE_COUNTER_FALLBACK */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.h
new file mode 100644
index 0000000..55eceb6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_precise.h	
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TIME_PRECISE_H
+#define GRPC_CORE_LIB_GPR_TIME_PRECISE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/support/time.h>
+
+// Depending on the platform gpr_get_cycle_counter() can have a resolution as
+// low as a usec. Use other clock sources or gpr_precise_clock_now(),
+// where you need high resolution clocks.
+//
+// Using gpr_get_cycle_counter() is preferred to using ExecCtx::Get()->Now()
+// whenever possible.
+
+#if GPR_CYCLE_COUNTER_RDTSC_32
+typedef int64_t gpr_cycle_counter;
+inline gpr_cycle_counter gpr_get_cycle_counter() {
+  int64_t ret;
+  __asm__ volatile("rdtsc" : "=A"(ret));
+  return ret;
+}
+#elif GPR_CYCLE_COUNTER_RDTSC_64
+typedef int64_t gpr_cycle_counter;
+inline gpr_cycle_counter gpr_get_cycle_counter() {
+  uint64_t low, high;
+  __asm__ volatile("rdtsc" : "=a"(low), "=d"(high));
+  return (high << 32) | low;
+}
+#elif GPR_CYCLE_COUNTER_FALLBACK
+// TODO(soheil): add support for mrs on Arm.
+
+// Real time in micros.
+typedef double gpr_cycle_counter;
+gpr_cycle_counter gpr_get_cycle_counter();
+#else
+#error Must define exactly one of \
+    GPR_CYCLE_COUNTER_RDTSC_32, \
+    GPR_CYCLE_COUNTER_RDTSC_64, or \
+    GPR_CYCLE_COUNTER_FALLBACK
+#endif
+
+void gpr_precise_clock_init(void);
+void gpr_precise_clock_now(gpr_timespec* clk);
+gpr_timespec gpr_cycle_counter_to_time(gpr_cycle_counter cycles);
+gpr_timespec gpr_cycle_counter_sub(gpr_cycle_counter a, gpr_cycle_counter b);
+
+#endif /* GRPC_CORE_LIB_GPR_TIME_PRECISE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_windows.cc
new file mode 100644
index 0000000..247cc16
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/time_windows.cc	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Win32 code for gpr time support. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS_TIME
+
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <limits.h>
+#include <process.h>
+#include <sys/timeb.h>
+
+#include "src/core/lib/gpr/time_precise.h"
+
+static LARGE_INTEGER g_start_time;
+static double g_time_scale;
+
+void gpr_time_init(void) {
+  LARGE_INTEGER frequency;
+  QueryPerformanceFrequency(&frequency);
+  QueryPerformanceCounter(&g_start_time);
+  g_time_scale = 1.0 / (double)frequency.QuadPart;
+}
+
+static gpr_timespec now_impl(gpr_clock_type clock) {
+  gpr_timespec now_tv;
+  LONGLONG diff;
+  struct _timeb now_tb;
+  LARGE_INTEGER timestamp;
+  double now_dbl;
+  now_tv.clock_type = clock;
+  switch (clock) {
+    case GPR_CLOCK_REALTIME:
+      _ftime_s(&now_tb);
+      now_tv.tv_sec = (int64_t)now_tb.time;
+      now_tv.tv_nsec = now_tb.millitm * 1000000;
+      break;
+    case GPR_CLOCK_MONOTONIC:
+    case GPR_CLOCK_PRECISE:
+      QueryPerformanceCounter(&timestamp);
+      diff = timestamp.QuadPart - g_start_time.QuadPart;
+      now_dbl = (double)diff * g_time_scale;
+      now_tv.tv_sec = (int64_t)now_dbl;
+      now_tv.tv_nsec = (int32_t)((now_dbl - (double)now_tv.tv_sec) * 1e9);
+      break;
+    case GPR_TIMESPAN:
+      abort();
+      break;
+  }
+  return now_tv;
+}
+
+gpr_timespec (*gpr_now_impl)(gpr_clock_type clock_type) = now_impl;
+
+gpr_timespec gpr_now(gpr_clock_type clock_type) {
+  return gpr_now_impl(clock_type);
+}
+
+void gpr_sleep_until(gpr_timespec until) {
+  gpr_timespec now;
+  gpr_timespec delta;
+  int64_t sleep_millis;
+
+  for (;;) {
+    /* We could simplify by using clock_nanosleep instead, but it might be
+     * slightly less portable. */
+    now = gpr_now(until.clock_type);
+    if (gpr_time_cmp(until, now) <= 0) {
+      return;
+    }
+
+    delta = gpr_time_sub(until, now);
+    sleep_millis =
+        delta.tv_sec * GPR_MS_PER_SEC + delta.tv_nsec / GPR_NS_PER_MS;
+    GPR_ASSERT((sleep_millis >= 0) && (sleep_millis <= INT_MAX));
+    Sleep((DWORD)sleep_millis);
+  }
+}
+
+#endif /* GPR_WINDOWS_TIME */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls.h
new file mode 100644
index 0000000..aee8f4d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_H
+#define GRPC_CORE_LIB_GPR_TLS_H
+
+#include <grpc/support/port_platform.h>
+
+/** Thread local storage.
+
+   A minimal wrapper that should be implementable across many compilers,
+   and implementable efficiently across most modern compilers.
+
+   Thread locals have type intptr_t.
+
+   Declaring a thread local variable 'foo':
+     GPR_TLS_DECL(foo);
+   Thread locals always have static scope.
+
+   Declaring a thread local class variable 'foo':
+     GPR_TLS_CLASS_DECL(foo);
+
+   Defining the thread local class variable:
+     GPR_TLS_CLASS_DEF(foo);
+
+   Initializing a thread local (must be done at library initialization
+   time):
+     gpr_tls_init(&foo);
+
+   Destroying a thread local:
+     gpr_tls_destroy(&foo);
+
+   Setting a thread local (returns new_value):
+     gpr_tls_set(&foo, new_value);
+
+   Accessing a thread local:
+     current_value = gpr_tls_get(&foo);
+
+   ALL functions here may be implemented as macros. */
+
+#ifdef GPR_GCC_TLS
+#include "src/core/lib/gpr/tls_gcc.h"
+#endif
+
+#ifdef GPR_MSVC_TLS
+#include "src/core/lib/gpr/tls_msvc.h"
+#endif
+
+#ifdef GPR_PTHREAD_TLS
+#include "src/core/lib/gpr/tls_pthread.h"
+#endif
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_gcc.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_gcc.h
new file mode 100644
index 0000000..72b360b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_gcc.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_GCC_H
+#define GRPC_CORE_LIB_GPR_TLS_GCC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/support/log.h>
+
+/** Thread local storage based on gcc compiler primitives.
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_gcc_thread_local {
+  intptr_t value;
+};
+
+#define GPR_TLS_DECL(name) \
+  static __thread struct gpr_gcc_thread_local name = {0}
+
+#define GPR_TLS_CLASS_DECL(name) \
+  static __thread struct gpr_gcc_thread_local name
+
+#define GPR_TLS_CLASS_DEF(name) __thread struct gpr_gcc_thread_local name = {0}
+
+#define gpr_tls_init(tls) \
+  do {                    \
+  } while (0)
+#define gpr_tls_destroy(tls) \
+  do {                       \
+  } while (0)
+#define gpr_tls_set(tls, new_value) (((tls)->value) = (new_value))
+#define gpr_tls_get(tls) ((tls)->value)
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_GCC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_msvc.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_msvc.h
new file mode 100644
index 0000000..f4b3f0f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_msvc.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_MSVC_H
+#define GRPC_CORE_LIB_GPR_TLS_MSVC_H
+
+/** Thread local storage based on ms visual c compiler primitives.
+#include <grpc/support/port_platform.h>
+
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_msvc_thread_local {
+  intptr_t value;
+};
+
+/** Use GPR_TLS_DECL to declare tls static variables outside a class */
+#define GPR_TLS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+/** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name
+
+#define GPR_TLS_CLASS_DEF(name) \
+  __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+#define gpr_tls_init(tls) \
+  do {                    \
+  } while (0)
+#define gpr_tls_destroy(tls) \
+  do {                       \
+  } while (0)
+#define gpr_tls_set(tls, new_value) (((tls)->value) = (new_value))
+#define gpr_tls_get(tls) ((tls)->value)
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_MSVC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.cc
new file mode 100644
index 0000000..2e5b306
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.cc	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_PTHREAD_TLS
+
+#include "src/core/lib/gpr/tls.h"
+
+intptr_t gpr_tls_set(struct gpr_pthread_thread_local* tls, intptr_t value) {
+  GPR_ASSERT(0 == pthread_setspecific(tls->key, (void*)value));
+  return value;
+}
+
+#endif /* GPR_PTHREAD_TLS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.h
new file mode 100644
index 0000000..a15f2f3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tls_pthread.h	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_PTHREAD_H
+#define GRPC_CORE_LIB_GPR_TLS_PTHREAD_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h> /* for GPR_ASSERT */
+#include <pthread.h>
+
+/** Thread local storage based on pthread library calls.
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_pthread_thread_local {
+  pthread_key_t key;
+};
+
+/** Use GPR_TLS_DECL to declare tls static variables outside a class */
+#define GPR_TLS_DECL(name) static struct gpr_pthread_thread_local name = {0}
+
+/** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DECL(name) static struct gpr_pthread_thread_local name
+
+/** Use GPR_TLS_CLASS_DEF to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DEF(name) struct gpr_pthread_thread_local name = {0}
+
+#define gpr_tls_init(tls) GPR_ASSERT(0 == pthread_key_create(&(tls)->key, NULL))
+#define gpr_tls_destroy(tls) pthread_key_delete((tls)->key)
+#define gpr_tls_get(tls) ((intptr_t)pthread_getspecific((tls)->key))
+#ifdef __cplusplus
+extern "C" {
+#endif
+intptr_t gpr_tls_set(struct gpr_pthread_thread_local* tls, intptr_t value);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_PTHREAD_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile.h
new file mode 100644
index 0000000..3ce3ff5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TMPFILE_H
+#define GRPC_CORE_LIB_GPR_TMPFILE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+/* Creates a temporary file from a prefix.
+   If tmp_filename is not NULL, *tmp_filename is assigned the name of the
+   created file and it is the responsibility of the caller to gpr_free it
+   unless an error occurs in which case it will be set to NULL. */
+FILE* gpr_tmpfile(const char* prefix, char** tmp_filename);
+
+#endif /* GRPC_CORE_LIB_GPR_TMPFILE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_msys.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_msys.cc
new file mode 100644
index 0000000..76cd886
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_msys.cc	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_MSYS_TMPFILE
+
+#include <io.h>
+#include <stdio.h>
+#include <string.h>
+#include <tchar.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string_windows.h"
+#include "src/core/lib/gpr/tmpfile.h"
+
+FILE* gpr_tmpfile(const char* prefix, char** tmp_filename_out) {
+  FILE* result = NULL;
+  char tmp_filename[MAX_PATH];
+  UINT success;
+
+  if (tmp_filename_out != NULL) *tmp_filename_out = NULL;
+
+  /* Generate a unique filename with our template + temporary path. */
+  success = GetTempFileNameA(".", prefix, 0, tmp_filename);
+  fprintf(stderr, "success = %d\n", success);
+
+  if (success) {
+    /* Open a file there. */
+    result = fopen(tmp_filename, "wb+");
+    fprintf(stderr, "result = %p\n", result);
+  }
+  if (result != NULL && tmp_filename_out) {
+    *tmp_filename_out = gpr_strdup(tmp_filename);
+  }
+
+  return result;
+}
+
+#endif /* GPR_MSYS_TMPFILE */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_posix.cc
new file mode 100644
index 0000000..ffdad33
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_posix.cc	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_TMPFILE
+
+#include "src/core/lib/gpr/tmpfile.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+
+FILE* gpr_tmpfile(const char* prefix, char** tmp_filename) {
+  FILE* result = nullptr;
+  char* filename_template;
+  int fd;
+
+  if (tmp_filename != nullptr) *tmp_filename = nullptr;
+
+  gpr_asprintf(&filename_template, "/tmp/%s_XXXXXX", prefix);
+  GPR_ASSERT(filename_template != nullptr);
+
+  fd = mkstemp(filename_template);
+  if (fd == -1) {
+    gpr_log(GPR_ERROR, "mkstemp failed for filename_template %s with error %s.",
+            filename_template, strerror(errno));
+    goto end;
+  }
+  result = fdopen(fd, "w+");
+  if (result == nullptr) {
+    gpr_log(GPR_ERROR, "Could not open file %s from fd %d (error = %s).",
+            filename_template, fd, strerror(errno));
+    unlink(filename_template);
+    close(fd);
+    goto end;
+  }
+
+end:
+  if (result != nullptr && tmp_filename != nullptr) {
+    *tmp_filename = filename_template;
+  } else {
+    gpr_free(filename_template);
+  }
+  return result;
+}
+
+#endif /* GPR_POSIX_TMPFILE */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_windows.cc
new file mode 100644
index 0000000..d486808
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/tmpfile_windows.cc	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS_TMPFILE
+
+#include <io.h>
+#include <stdio.h>
+#include <string.h>
+#include <tchar.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string_windows.h"
+#include "src/core/lib/gpr/tmpfile.h"
+
+FILE* gpr_tmpfile(const char* prefix, char** tmp_filename_out) {
+  FILE* result = NULL;
+  LPTSTR template_string = NULL;
+  TCHAR tmp_path[MAX_PATH];
+  TCHAR tmp_filename[MAX_PATH];
+  DWORD status;
+  UINT success;
+
+  if (tmp_filename_out != NULL) *tmp_filename_out = NULL;
+
+  /* Convert our prefix to TCHAR. */
+  template_string = gpr_char_to_tchar(prefix);
+  GPR_ASSERT(template_string);
+
+  /* Get the path to the best temporary folder available. */
+  status = GetTempPath(MAX_PATH, tmp_path);
+  if (status == 0 || status > MAX_PATH) goto end;
+
+  /* Generate a unique filename with our template + temporary path. */
+  success = GetTempFileName(tmp_path, template_string, 0, tmp_filename);
+  if (!success) goto end;
+
+  /* Open a file there. */
+  if (_tfopen_s(&result, tmp_filename, TEXT("wb+")) != 0) goto end;
+
+end:
+  if (result && tmp_filename_out) {
+    *tmp_filename_out = gpr_tchar_to_char(tmp_filename);
+  }
+
+  gpr_free(template_string);
+  return result;
+}
+
+#endif /* GPR_WINDOWS_TMPFILE */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/useful.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/useful.h
new file mode 100644
index 0000000..a4e73b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/useful.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_USEFUL_H
+#define GRPC_CORE_LIB_GPR_USEFUL_H
+
+/** useful macros that don't belong anywhere else */
+
+#define GPR_MIN(a, b) ((a) < (b) ? (a) : (b))
+#define GPR_MAX(a, b) ((a) > (b) ? (a) : (b))
+#define GPR_CLAMP(a, min, max) ((a) < (min) ? (min) : (a) > (max) ? (max) : (a))
+/** rotl, rotr assume x is unsigned */
+#define GPR_ROTL(x, n) (((x) << (n)) | ((x) >> (sizeof(x) * 8 - (n))))
+#define GPR_ROTR(x, n) (((x) >> (n)) | ((x) << (sizeof(x) * 8 - (n))))
+
+#define GPR_ARRAY_SIZE(array) (sizeof(array) / sizeof(*(array)))
+
+#define GPR_SWAP(type, a, b) \
+  do {                       \
+    type x = a;              \
+    a = b;                   \
+    b = x;                   \
+  } while (0)
+
+/** Set the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITSET(i, n) ((*(i)) |= (1u << (n)))
+
+/** Clear the \a n-th bit of \a i (a mutable pointer). */
+#define GPR_BITCLEAR(i, n) ((*(i)) &= ~(1u << (n)))
+
+/** Get the \a n-th bit of \a i */
+#define GPR_BITGET(i, n) (((i) & (1u << (n))) != 0)
+
+#define GPR_INTERNAL_HEXDIGIT_BITCOUNT(x)                        \
+  ((x) - (((x) >> 1) & 0x77777777) - (((x) >> 2) & 0x33333333) - \
+   (((x) >> 3) & 0x11111111))
+
+/** Returns number of bits set in bitset \a i */
+#define GPR_BITCOUNT(i)                          \
+  (((GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) +         \
+     (GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) >> 4)) & \
+    0x0f0f0f0f) %                                \
+   255)
+
+#define GPR_ICMP(a, b) ((a) < (b) ? -1 : ((a) > (b) ? 1 : 0))
+
+#define GPR_HASH_POINTER(x, range) \
+  ((((size_t)x) >> 4) ^ (((size_t)x) >> 9) ^ (((size_t)x) >> 14)) % (range)
+
+#endif /* GRPC_CORE_LIB_GPR_USEFUL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/wrap_memcpy.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/wrap_memcpy.cc
new file mode 100644
index 0000000..9b8608e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gpr/wrap_memcpy.cc	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+/* Provide a wrapped memcpy for targets that need to be backwards
+ * compatible with older libc's.
+ *
+ * Enable by setting LDFLAGS=-Wl,-wrap,memcpy when linking.
+ */
+
+extern "C" {
+#ifdef __linux__
+#if defined(__x86_64__) && !defined(GPR_MUSL_LIBC_COMPAT)
+__asm__(".symver memcpy,memcpy@GLIBC_2.2.5");
+void* __wrap_memcpy(void* destination, const void* source, size_t num) {
+  return memcpy(destination, source, num);
+}
+#else /* !__x86_64__ */
+void* __wrap_memcpy(void* destination, const void* source, size_t num) {
+  return memmove(destination, source, num);
+}
+#endif
+#endif
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.cc
new file mode 100644
index 0000000..6168825
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.cc	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/arena.h"
+
+#include <string.h>
+#include <new>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace {
+
+void* ArenaStorage(size_t initial_size) {
+  static constexpr size_t base_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_core::Arena));
+  initial_size = GPR_ROUND_UP_TO_ALIGNMENT_SIZE(initial_size);
+  size_t alloc_size = base_size + initial_size;
+  static constexpr size_t alignment =
+      (GPR_CACHELINE_SIZE > GPR_MAX_ALIGNMENT &&
+       GPR_CACHELINE_SIZE % GPR_MAX_ALIGNMENT == 0)
+          ? GPR_CACHELINE_SIZE
+          : GPR_MAX_ALIGNMENT;
+  return gpr_malloc_aligned(alloc_size, alignment);
+}
+
+}  // namespace
+
+namespace grpc_core {
+
+Arena::~Arena() {
+  Zone* z = last_zone_;
+  while (z) {
+    Zone* prev_z = z->prev;
+    z->~Zone();
+    gpr_free_aligned(z);
+    z = prev_z;
+  }
+}
+
+Arena* Arena::Create(size_t initial_size) {
+  return new (ArenaStorage(initial_size)) Arena(initial_size);
+}
+
+std::pair<Arena*, void*> Arena::CreateWithAlloc(size_t initial_size,
+                                                size_t alloc_size) {
+  static constexpr size_t base_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(Arena));
+  auto* new_arena =
+      new (ArenaStorage(initial_size)) Arena(initial_size, alloc_size);
+  void* first_alloc = reinterpret_cast<char*>(new_arena) + base_size;
+  return std::make_pair(new_arena, first_alloc);
+}
+
+size_t Arena::Destroy() {
+  size_t size = total_used_.Load(MemoryOrder::RELAXED);
+  this->~Arena();
+  gpr_free_aligned(this);
+  return size;
+}
+
+void* Arena::AllocZone(size_t size) {
+  // If the allocation isn't able to end in the initial zone, create a new
+  // zone for this allocation, and any unused space in the initial zone is
+  // wasted. This overflowing and wasting is uncommon because of our arena
+  // sizing hysteresis (that is, most calls should have a large enough initial
+  // zone and will not need to grow the arena).
+  static constexpr size_t zone_base_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(Zone));
+  size_t alloc_size = zone_base_size + size;
+  Zone* z = new (gpr_malloc_aligned(alloc_size, GPR_MAX_ALIGNMENT)) Zone();
+  {
+    gpr_spinlock_lock(&arena_growth_spinlock_);
+    z->prev = last_zone_;
+    last_zone_ = z;
+    gpr_spinlock_unlock(&arena_growth_spinlock_);
+  }
+  return reinterpret_cast<char*>(z) + zone_base_size;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.h
new file mode 100644
index 0000000..67c91d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/arena.h	
@@ -0,0 +1,120 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// \file Arena based allocator
+// Allows very fast allocation of memory, but that memory cannot be freed until
+// the arena as a whole is freed
+// Tracks the total memory allocated against it, so that future arenas can
+// pre-allocate the right amount of memory
+
+#ifndef GRPC_CORE_LIB_GPRPP_ARENA_H
+#define GRPC_CORE_LIB_GPRPP_ARENA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <new>
+#include <utility>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gprpp/atomic.h"
+
+#include <stddef.h>
+
+namespace grpc_core {
+
+class Arena {
+ public:
+  // Create an arena, with \a initial_size bytes in the first allocated buffer.
+  static Arena* Create(size_t initial_size);
+
+  // Create an arena, with \a initial_size bytes in the first allocated buffer,
+  // and return both a void pointer to the returned arena and a void* with the
+  // first allocation.
+  static std::pair<Arena*, void*> CreateWithAlloc(size_t initial_size,
+                                                  size_t alloc_size);
+
+  // Destroy an arena, returning the total number of bytes allocated.
+  size_t Destroy();
+  // Allocate \a size bytes from the arena.
+  void* Alloc(size_t size) {
+    static constexpr size_t base_size =
+        GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(Arena));
+    size = GPR_ROUND_UP_TO_ALIGNMENT_SIZE(size);
+    size_t begin = total_used_.FetchAdd(size, MemoryOrder::RELAXED);
+    if (begin + size <= initial_zone_size_) {
+      return reinterpret_cast<char*>(this) + base_size + begin;
+    } else {
+      return AllocZone(size);
+    }
+  }
+
+  // TODO(roth): We currently assume that all callers need alignment of 16
+  // bytes, which may be wrong in some cases. When we have time, we should
+  // change this to instead use the alignment of the type being allocated by
+  // this method.
+  template <typename T, typename... Args>
+  T* New(Args&&... args) {
+    T* t = static_cast<T*>(Alloc(sizeof(T)));
+    new (t) T(std::forward<Args>(args)...);
+    return t;
+  }
+
+ private:
+  struct Zone {
+    Zone* prev;
+  };
+
+  // Initialize an arena.
+  // Parameters:
+  //   initial_size: The initial size of the whole arena in bytes. These bytes
+  //   are contained within 'zone 0'. If the arena user ends up requiring more
+  //   memory than the arena contains in zone 0, subsequent zones are allocated
+  //   on demand and maintained in a tail-linked list.
+  //
+  //   initial_alloc: Optionally, construct the arena as though a call to
+  //   Alloc() had already been made for initial_alloc bytes. This provides a
+  //   quick optimization (avoiding an atomic fetch-add) for the common case
+  //   where we wish to create an arena and then perform an immediate
+  //   allocation.
+  explicit Arena(size_t initial_size, size_t initial_alloc = 0)
+      : total_used_(initial_alloc), initial_zone_size_(initial_size) {}
+
+  ~Arena();
+
+  void* AllocZone(size_t size);
+
+  // Keep track of the total used size. We use this in our call sizing
+  // hysteresis.
+  Atomic<size_t> total_used_;
+  size_t initial_zone_size_;
+  gpr_spinlock arena_growth_spinlock_ = GPR_SPINLOCK_STATIC_INITIALIZER;
+  // If the initial arena allocation wasn't enough, we allocate additional zones
+  // in a reverse linked list. Each additional zone consists of (1) a pointer to
+  // the zone added before this zone (null if this is the first additional zone)
+  // and (2) the allocated memory. The arena itself maintains a pointer to the
+  // last zone; the zone list is reverse-walked during arena destruction only.
+  Zone* last_zone_ = nullptr;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ARENA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/atomic.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/atomic.h
new file mode 100644
index 0000000..095ebf1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/atomic.h	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_ATOMIC_H
+#define GRPC_CORE_LIB_GPRPP_ATOMIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <atomic>
+
+#include <grpc/support/atm.h>
+
+namespace grpc_core {
+
+enum class MemoryOrder {
+  RELAXED = std::memory_order_relaxed,
+  CONSUME = std::memory_order_consume,
+  ACQUIRE = std::memory_order_acquire,
+  RELEASE = std::memory_order_release,
+  ACQ_REL = std::memory_order_acq_rel,
+  SEQ_CST = std::memory_order_seq_cst
+};
+
+template <typename T>
+class Atomic {
+ public:
+  explicit Atomic(T val = T()) : storage_(val) {}
+
+  T Load(MemoryOrder order) const {
+    return storage_.load(static_cast<std::memory_order>(order));
+  }
+
+  void Store(T val, MemoryOrder order) {
+    storage_.store(val, static_cast<std::memory_order>(order));
+  }
+
+  T Exchange(T desired, MemoryOrder order) {
+    return storage_.exchange(desired, static_cast<std::memory_order>(order));
+  }
+
+  bool CompareExchangeWeak(T* expected, T desired, MemoryOrder success,
+                           MemoryOrder failure) {
+    return GPR_ATM_INC_CAS_THEN(storage_.compare_exchange_weak(
+        *expected, desired, static_cast<std::memory_order>(success),
+        static_cast<std::memory_order>(failure)));
+  }
+
+  bool CompareExchangeStrong(T* expected, T desired, MemoryOrder success,
+                             MemoryOrder failure) {
+    return GPR_ATM_INC_CAS_THEN(storage_.compare_exchange_strong(
+        *expected, desired, static_cast<std::memory_order>(success),
+        static_cast<std::memory_order>(failure)));
+  }
+
+  template <typename Arg>
+  T FetchAdd(Arg arg, MemoryOrder order = MemoryOrder::SEQ_CST) {
+    return GPR_ATM_INC_ADD_THEN(storage_.fetch_add(
+        static_cast<Arg>(arg), static_cast<std::memory_order>(order)));
+  }
+
+  template <typename Arg>
+  T FetchSub(Arg arg, MemoryOrder order = MemoryOrder::SEQ_CST) {
+    return GPR_ATM_INC_ADD_THEN(storage_.fetch_sub(
+        static_cast<Arg>(arg), static_cast<std::memory_order>(order)));
+  }
+
+  // Atomically increment a counter only if the counter value is not zero.
+  // Returns true if increment took place; false if counter is zero.
+  bool IncrementIfNonzero(MemoryOrder load_order = MemoryOrder::ACQUIRE) {
+    T count = storage_.load(static_cast<std::memory_order>(load_order));
+    do {
+      // If zero, we are done (without an increment). If not, we must do a CAS
+      // to maintain the contract: do not increment the counter if it is already
+      // zero
+      if (count == 0) {
+        return false;
+      }
+    } while (!CompareExchangeWeak(&count, count + 1, MemoryOrder::ACQ_REL,
+                                  load_order));
+    return true;
+  }
+
+ private:
+  std::atomic<T> storage_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ATOMIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/debug_location.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/debug_location.h
new file mode 100644
index 0000000..d2384fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/debug_location.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H
+#define GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H
+
+namespace grpc_core {
+
+// Used for tracking file and line where a call is made for debug builds.
+// No-op for non-debug builds.
+// Callers can use the DEBUG_LOCATION macro in either case.
+#ifndef NDEBUG
+// TODO(roth): See if there's a way to automatically populate this,
+// similarly to how absl::SourceLocation::current() works, so that
+// callers don't need to explicitly pass DEBUG_LOCATION anywhere.
+class DebugLocation {
+ public:
+  DebugLocation(const char* file, int line) : file_(file), line_(line) {}
+  const char* file() const { return file_; }
+  int line() const { return line_; }
+
+ private:
+  const char* file_;
+  const int line_;
+};
+#define DEBUG_LOCATION ::grpc_core::DebugLocation(__FILE__, __LINE__)
+#else
+class DebugLocation {
+ public:
+  const char* file() const { return nullptr; }
+  int line() const { return -1; }
+};
+#define DEBUG_LOCATION ::grpc_core::DebugLocation()
+#endif
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.cc
new file mode 100644
index 0000000..92377a0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.cc	
@@ -0,0 +1,242 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/fork.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/gprpp/memory.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+#ifdef GRPC_ENABLE_FORK_SUPPORT
+#define GRPC_ENABLE_FORK_SUPPORT_DEFAULT true
+#else
+#define GRPC_ENABLE_FORK_SUPPORT_DEFAULT false
+#endif  // GRPC_ENABLE_FORK_SUPPORT
+
+GPR_GLOBAL_CONFIG_DEFINE_BOOL(grpc_enable_fork_support,
+                              GRPC_ENABLE_FORK_SUPPORT_DEFAULT,
+                              "Enable folk support");
+
+namespace grpc_core {
+namespace internal {
+// The exec_ctx_count has 2 modes, blocked and unblocked.
+// When unblocked, the count is 2-indexed; exec_ctx_count=2 indicates
+// 0 active ExecCtxs, exex_ctx_count=3 indicates 1 active ExecCtxs...
+
+// When blocked, the exec_ctx_count is 0-indexed.  Note that ExecCtx
+// creation can only be blocked if there is exactly 1 outstanding ExecCtx,
+// meaning that BLOCKED and UNBLOCKED counts partition the integers
+#define UNBLOCKED(n) (n + 2)
+#define BLOCKED(n) (n)
+
+class ExecCtxState {
+ public:
+  ExecCtxState() : fork_complete_(true) {
+    gpr_mu_init(&mu_);
+    gpr_cv_init(&cv_);
+    gpr_atm_no_barrier_store(&count_, UNBLOCKED(0));
+  }
+
+  void IncExecCtxCount() {
+    gpr_atm count = gpr_atm_no_barrier_load(&count_);
+    while (true) {
+      if (count <= BLOCKED(1)) {
+        // This only occurs if we are trying to fork.  Wait until the fork()
+        // operation completes before allowing new ExecCtxs.
+        gpr_mu_lock(&mu_);
+        if (gpr_atm_no_barrier_load(&count_) <= BLOCKED(1)) {
+          while (!fork_complete_) {
+            gpr_cv_wait(&cv_, &mu_, gpr_inf_future(GPR_CLOCK_REALTIME));
+          }
+        }
+        gpr_mu_unlock(&mu_);
+      } else if (gpr_atm_no_barrier_cas(&count_, count, count + 1)) {
+        break;
+      }
+      count = gpr_atm_no_barrier_load(&count_);
+    }
+  }
+
+  void DecExecCtxCount() { gpr_atm_no_barrier_fetch_add(&count_, -1); }
+
+  bool BlockExecCtx() {
+    // Assumes there is an active ExecCtx when this function is called
+    if (gpr_atm_no_barrier_cas(&count_, UNBLOCKED(1), BLOCKED(1))) {
+      gpr_mu_lock(&mu_);
+      fork_complete_ = false;
+      gpr_mu_unlock(&mu_);
+      return true;
+    }
+    return false;
+  }
+
+  void AllowExecCtx() {
+    gpr_mu_lock(&mu_);
+    gpr_atm_no_barrier_store(&count_, UNBLOCKED(0));
+    fork_complete_ = true;
+    gpr_cv_broadcast(&cv_);
+    gpr_mu_unlock(&mu_);
+  }
+
+  ~ExecCtxState() {
+    gpr_mu_destroy(&mu_);
+    gpr_cv_destroy(&cv_);
+  }
+
+ private:
+  bool fork_complete_;
+  gpr_mu mu_;
+  gpr_cv cv_;
+  gpr_atm count_;
+};
+
+class ThreadState {
+ public:
+  ThreadState() : awaiting_threads_(false), threads_done_(false), count_(0) {
+    gpr_mu_init(&mu_);
+    gpr_cv_init(&cv_);
+  }
+
+  void IncThreadCount() {
+    gpr_mu_lock(&mu_);
+    count_++;
+    gpr_mu_unlock(&mu_);
+  }
+
+  void DecThreadCount() {
+    gpr_mu_lock(&mu_);
+    count_--;
+    if (awaiting_threads_ && count_ == 0) {
+      threads_done_ = true;
+      gpr_cv_signal(&cv_);
+    }
+    gpr_mu_unlock(&mu_);
+  }
+  void AwaitThreads() {
+    gpr_mu_lock(&mu_);
+    awaiting_threads_ = true;
+    threads_done_ = (count_ == 0);
+    while (!threads_done_) {
+      gpr_cv_wait(&cv_, &mu_, gpr_inf_future(GPR_CLOCK_REALTIME));
+    }
+    awaiting_threads_ = true;
+    gpr_mu_unlock(&mu_);
+  }
+
+  ~ThreadState() {
+    gpr_mu_destroy(&mu_);
+    gpr_cv_destroy(&cv_);
+  }
+
+ private:
+  bool awaiting_threads_;
+  bool threads_done_;
+  gpr_mu mu_;
+  gpr_cv cv_;
+  int count_;
+};
+
+}  // namespace
+
+void Fork::GlobalInit() {
+  if (!override_enabled_) {
+    support_enabled_.Store(GPR_GLOBAL_CONFIG_GET(grpc_enable_fork_support),
+                           MemoryOrder::RELAXED);
+  }
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    exec_ctx_state_ = new internal::ExecCtxState();
+    thread_state_ = new internal::ThreadState();
+  }
+}
+
+void Fork::GlobalShutdown() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    delete exec_ctx_state_;
+    delete thread_state_;
+  }
+}
+
+bool Fork::Enabled() { return support_enabled_.Load(MemoryOrder::RELAXED); }
+
+// Testing Only
+void Fork::Enable(bool enable) {
+  override_enabled_ = true;
+  support_enabled_.Store(enable, MemoryOrder::RELAXED);
+}
+
+void Fork::DoIncExecCtxCount() { exec_ctx_state_->IncExecCtxCount(); }
+
+void Fork::DoDecExecCtxCount() { exec_ctx_state_->DecExecCtxCount(); }
+
+void Fork::SetResetChildPollingEngineFunc(
+    Fork::child_postfork_func reset_child_polling_engine) {
+  reset_child_polling_engine_ = reset_child_polling_engine;
+}
+Fork::child_postfork_func Fork::GetResetChildPollingEngineFunc() {
+  return reset_child_polling_engine_;
+}
+
+bool Fork::BlockExecCtx() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    return exec_ctx_state_->BlockExecCtx();
+  }
+  return false;
+}
+
+void Fork::AllowExecCtx() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    exec_ctx_state_->AllowExecCtx();
+  }
+}
+
+void Fork::IncThreadCount() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    thread_state_->IncThreadCount();
+  }
+}
+
+void Fork::DecThreadCount() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    thread_state_->DecThreadCount();
+  }
+}
+void Fork::AwaitThreads() {
+  if (support_enabled_.Load(MemoryOrder::RELAXED)) {
+    thread_state_->AwaitThreads();
+  }
+}
+
+internal::ExecCtxState* Fork::exec_ctx_state_ = nullptr;
+internal::ThreadState* Fork::thread_state_ = nullptr;
+Atomic<bool> Fork::support_enabled_(false);
+bool Fork::override_enabled_ = false;
+Fork::child_postfork_func Fork::reset_child_polling_engine_ = nullptr;
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.h
new file mode 100644
index 0000000..3601d7c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/fork.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_FORK_H
+#define GRPC_CORE_LIB_GPRPP_FORK_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+namespace grpc_core {
+
+namespace internal {
+class ExecCtxState;
+class ThreadState;
+}  // namespace internal
+
+class Fork {
+ public:
+  typedef void (*child_postfork_func)(void);
+
+  static void GlobalInit();
+  static void GlobalShutdown();
+
+  // Returns true if fork suppport is enabled, false otherwise
+  static bool Enabled();
+
+  // Increment the count of active ExecCtxs.
+  // Will block until a pending fork is complete if one is in progress.
+  static void IncExecCtxCount() {
+    if (GPR_UNLIKELY(support_enabled_.Load(MemoryOrder::RELAXED))) {
+      DoIncExecCtxCount();
+    }
+  }
+
+  // Decrement the count of active ExecCtxs
+  static void DecExecCtxCount() {
+    if (GPR_UNLIKELY(support_enabled_.Load(MemoryOrder::RELAXED))) {
+      DoDecExecCtxCount();
+    }
+  }
+
+  // Provide a function that will be invoked in the child's postfork handler to
+  // reset the polling engine's internal state.
+  static void SetResetChildPollingEngineFunc(
+      child_postfork_func reset_child_polling_engine);
+  static child_postfork_func GetResetChildPollingEngineFunc();
+
+  // Check if there is a single active ExecCtx
+  // (the one used to invoke this function).  If there are more,
+  // return false.  Otherwise, return true and block creation of
+  // more ExecCtx s until AlloWExecCtx() is called
+  //
+  static bool BlockExecCtx();
+  static void AllowExecCtx();
+
+  // Increment the count of active threads.
+  static void IncThreadCount();
+
+  // Decrement the count of active threads.
+  static void DecThreadCount();
+
+  // Await all core threads to be joined.
+  static void AwaitThreads();
+
+  // Test only: overrides environment variables/compile flags
+  // Must be called before grpc_init()
+  static void Enable(bool enable);
+
+ private:
+  static void DoIncExecCtxCount();
+  static void DoDecExecCtxCount();
+
+  static internal::ExecCtxState* exec_ctx_state_;
+  static internal::ThreadState* thread_state_;
+  static grpc_core::Atomic<bool> support_enabled_;
+  static bool override_enabled_;
+  static child_postfork_func reset_child_polling_engine_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_FORK_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config.h
new file mode 100644
index 0000000..ed986b8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+
+// --------------------------------------------------------------------
+// How to use global configuration variables:
+//
+// Defining config variables of a specified type:
+//   GPR_GLOBAL_CONFIG_DEFINE_*TYPE*(name, default_value, help);
+//
+// Supported TYPEs: BOOL, INT32, STRING
+//
+// It's recommended to use lowercase letters for 'name' like
+// regular variables. The builtin configuration system uses
+// environment variable and the name is converted to uppercase
+// when looking up the value. For example,
+// GPR_GLOBAL_CONFIG_DEFINE(grpc_latency) looks up the value with the
+// name, "GRPC_LATENCY".
+//
+// The variable initially has the specified 'default_value'
+// which must be an expression convertible to 'Type'.
+// 'default_value' may be evaluated 0 or more times,
+// and at an unspecified time; keep it
+// simple and usually free of side-effects.
+//
+// GPR_GLOBAL_CONFIG_DEFINE_*TYPE* should not be called in a C++ header.
+// It should be called at the top-level (outside any namespaces)
+// in a .cc file.
+//
+// Getting the variables:
+//   GPR_GLOBAL_CONFIG_GET(name)
+//
+// If error happens during getting variables, error messages will
+// be logged and default value will be returned.
+//
+// Setting the variables with new value:
+//   GPR_GLOBAL_CONFIG_SET(name, new_value)
+//
+// Declaring config variables for other modules to access:
+//   GPR_GLOBAL_CONFIG_DECLARE_*TYPE*(name)
+//
+// * Caveat for setting global configs at runtime
+//
+// Setting global configs at runtime multiple times is safe but it doesn't
+// mean that it will have a valid effect on the module depending configs.
+// In unit tests, it may be unpredictable to set different global configs
+// between test cases because grpc init and shutdown can ignore changes.
+// It's considered safe to set global configs before the first call to
+// grpc_init().
+
+// --------------------------------------------------------------------
+// How to customize the global configuration system:
+//
+// How to read and write configuration value can be customized.
+// Builtin system uses environment variables but it can be extended to
+// support command-line flag, file, etc.
+//
+// To customize it, following macros should be redefined.
+//
+//   GPR_GLOBAL_CONFIG_DEFINE_BOOL
+//   GPR_GLOBAL_CONFIG_DEFINE_INT32
+//   GPR_GLOBAL_CONFIG_DEFINE_STRING
+//
+// These macros should define functions for getting and setting variable.
+// For example, GPR_GLOBAL_CONFIG_DEFINE_BOOL(test, ...) would define two
+// functions.
+//
+//   bool gpr_global_config_get_test();
+//   void gpr_global_config_set_test(bool value);
+
+#include "src/core/lib/gprpp/global_config_env.h"
+
+#include "src/core/lib/gprpp/global_config_custom.h"
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_custom.h
new file mode 100644
index 0000000..175677e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_custom.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H
+
+// This is a placeholder for custom global configuration implementation.
+// To use the custom one, please define following macros here.
+//
+//   GPR_GLOBAL_CONFIG_DEFINE_BOOL
+//   GPR_GLOBAL_CONFIG_DEFINE_INT32
+//   GPR_GLOBAL_CONFIG_DEFINE_STRING
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.cc
new file mode 100644
index 0000000..7214889
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.cc	
@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config_env.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+
+#include <ctype.h>
+#include <string.h>
+
+namespace grpc_core {
+
+namespace {
+
+void DefaultGlobalConfigEnvErrorFunction(const char* error_message) {
+  gpr_log(GPR_ERROR, "%s", error_message);
+}
+
+GlobalConfigEnvErrorFunctionType g_global_config_env_error_func =
+    DefaultGlobalConfigEnvErrorFunction;
+
+void LogParsingError(const char* name, const char* value) {
+  char* error_message;
+  gpr_asprintf(&error_message,
+               "Illegal value '%s' specified for environment variable '%s'",
+               value, name);
+  (*g_global_config_env_error_func)(error_message);
+  gpr_free(error_message);
+}
+
+}  // namespace
+
+void SetGlobalConfigEnvErrorFunction(GlobalConfigEnvErrorFunctionType func) {
+  g_global_config_env_error_func = func;
+}
+
+grpc_core::UniquePtr<char> GlobalConfigEnv::GetValue() {
+  return grpc_core::UniquePtr<char>(gpr_getenv(GetName()));
+}
+
+void GlobalConfigEnv::SetValue(const char* value) {
+  gpr_setenv(GetName(), value);
+}
+
+void GlobalConfigEnv::Unset() { gpr_unsetenv(GetName()); }
+
+char* GlobalConfigEnv::GetName() {
+  // This makes sure that name_ is in a canonical form having uppercase
+  // letters. This is okay to be called serveral times.
+  for (char* c = name_; *c != 0; ++c) {
+    *c = toupper(*c);
+  }
+  return name_;
+}
+static_assert(std::is_trivially_destructible<GlobalConfigEnvBool>::value,
+              "GlobalConfigEnvBool needs to be trivially destructible.");
+
+bool GlobalConfigEnvBool::Get() {
+  grpc_core::UniquePtr<char> str = GetValue();
+  if (str == nullptr) {
+    return default_value_;
+  }
+  // parsing given value string.
+  bool result = false;
+  if (!gpr_parse_bool_value(str.get(), &result)) {
+    LogParsingError(GetName(), str.get());
+    result = default_value_;
+  }
+  return result;
+}
+
+void GlobalConfigEnvBool::Set(bool value) {
+  SetValue(value ? "true" : "false");
+}
+
+static_assert(std::is_trivially_destructible<GlobalConfigEnvInt32>::value,
+              "GlobalConfigEnvInt32 needs to be trivially destructible.");
+
+int32_t GlobalConfigEnvInt32::Get() {
+  grpc_core::UniquePtr<char> str = GetValue();
+  if (str == nullptr) {
+    return default_value_;
+  }
+  // parsing given value string.
+  char* end = str.get();
+  long result = strtol(str.get(), &end, 10);
+  if (*end != 0) {
+    LogParsingError(GetName(), str.get());
+    result = default_value_;
+  }
+  return static_cast<int32_t>(result);
+}
+
+void GlobalConfigEnvInt32::Set(int32_t value) {
+  char buffer[GPR_LTOA_MIN_BUFSIZE];
+  gpr_ltoa(value, buffer);
+  SetValue(buffer);
+}
+
+static_assert(std::is_trivially_destructible<GlobalConfigEnvString>::value,
+              "GlobalConfigEnvString needs to be trivially destructible.");
+
+grpc_core::UniquePtr<char> GlobalConfigEnvString::Get() {
+  grpc_core::UniquePtr<char> str = GetValue();
+  if (str == nullptr) {
+    return grpc_core::UniquePtr<char>(gpr_strdup(default_value_));
+  }
+  return str;
+}
+
+void GlobalConfigEnvString::Set(const char* value) { SetValue(value); }
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.h
new file mode 100644
index 0000000..b6d7d57
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_env.h	
@@ -0,0 +1,131 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config_generic.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+typedef void (*GlobalConfigEnvErrorFunctionType)(const char* error_message);
+
+/*
+ * Set global_config_env_error_function which is called when config system
+ * encounters errors such as parsing error. What the default function does
+ * is logging error message.
+ */
+void SetGlobalConfigEnvErrorFunction(GlobalConfigEnvErrorFunctionType func);
+
+// Base class for all classes to access environment variables.
+class GlobalConfigEnv {
+ protected:
+  // `name` should be writable and alive after constructor is called.
+  constexpr explicit GlobalConfigEnv(char* name) : name_(name) {}
+
+ public:
+  // Returns the value of `name` variable.
+  grpc_core::UniquePtr<char> GetValue();
+
+  // Sets the value of `name` variable.
+  void SetValue(const char* value);
+
+  // Unsets `name` variable.
+  void Unset();
+
+ protected:
+  char* GetName();
+
+ private:
+  char* name_;
+};
+
+class GlobalConfigEnvBool : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvBool(char* name, bool default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  bool Get();
+  void Set(bool value);
+
+ private:
+  bool default_value_;
+};
+
+class GlobalConfigEnvInt32 : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvInt32(char* name, int32_t default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  int32_t Get();
+  void Set(int32_t value);
+
+ private:
+  int32_t default_value_;
+};
+
+class GlobalConfigEnvString : public GlobalConfigEnv {
+ public:
+  constexpr GlobalConfigEnvString(char* name, const char* default_value)
+      : GlobalConfigEnv(name), default_value_(default_value) {}
+
+  grpc_core::UniquePtr<char> Get();
+  void Set(const char* value);
+
+ private:
+  const char* default_value_;
+};
+
+}  // namespace grpc_core
+
+// Macros for defining global config instances using environment variables.
+// This defines a GlobalConfig*Type* instance with arguments for
+// mutable variable name and default value.
+// Mutable name (g_env_str_##name) is here for having an array
+// for the canonical name without dynamic allocation.
+// `help` argument is ignored for this implementation.
+
+#define GPR_GLOBAL_CONFIG_DEFINE_BOOL(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                \
+  static ::grpc_core::GlobalConfigEnvBool g_env_##name(g_env_str_##name, \
+                                                       default_value);   \
+  bool gpr_global_config_get_##name() { return g_env_##name.Get(); }     \
+  void gpr_global_config_set_##name(bool value) { g_env_##name.Set(value); }
+
+#define GPR_GLOBAL_CONFIG_DEFINE_INT32(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                 \
+  static ::grpc_core::GlobalConfigEnvInt32 g_env_##name(g_env_str_##name, \
+                                                        default_value);   \
+  int32_t gpr_global_config_get_##name() { return g_env_##name.Get(); }   \
+  void gpr_global_config_set_##name(int32_t value) { g_env_##name.Set(value); }
+
+#define GPR_GLOBAL_CONFIG_DEFINE_STRING(name, default_value, help)         \
+  static char g_env_str_##name[] = #name;                                  \
+  static ::grpc_core::GlobalConfigEnvString g_env_##name(g_env_str_##name, \
+                                                         default_value);   \
+  ::grpc_core::UniquePtr<char> gpr_global_config_get_##name() {            \
+    return g_env_##name.Get();                                             \
+  }                                                                        \
+  void gpr_global_config_set_##name(const char* value) {                   \
+    g_env_##name.Set(value);                                               \
+  }
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_ENV_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_generic.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_generic.h
new file mode 100644
index 0000000..d3e3e2a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/global_config_generic.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H
+#define GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+#include <stdint.h>
+
+#define GPR_GLOBAL_CONFIG_GET(name) gpr_global_config_get_##name()
+
+#define GPR_GLOBAL_CONFIG_SET(name, value) gpr_global_config_set_##name(value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_BOOL(name)  \
+  extern bool gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(bool value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_INT32(name)    \
+  extern int32_t gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(int32_t value)
+
+#define GPR_GLOBAL_CONFIG_DECLARE_STRING(name)                      \
+  extern grpc_core::UniquePtr<char> gpr_global_config_get_##name(); \
+  extern void gpr_global_config_set_##name(const char* value)
+
+#endif /* GRPC_CORE_LIB_GPRPP_GLOBAL_CONFIG_GENERIC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.cc
new file mode 100644
index 0000000..d5aa6e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.cc	
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/host_port.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+int JoinHostPort(grpc_core::UniquePtr<char>* out, const char* host, int port) {
+  char* tmp;
+  int ret;
+  if (host[0] != '[' && strchr(host, ':') != nullptr) {
+    /* IPv6 literals must be enclosed in brackets. */
+    ret = gpr_asprintf(&tmp, "[%s]:%d", host, port);
+  } else {
+    /* Ordinary non-bracketed host:port. */
+    ret = gpr_asprintf(&tmp, "%s:%d", host, port);
+  }
+  out->reset(tmp);
+  return ret;
+}
+
+namespace {
+bool DoSplitHostPort(StringView name, StringView* host, StringView* port,
+                     bool* has_port) {
+  *has_port = false;
+  if (!name.empty() && name[0] == '[') {
+    /* Parse a bracketed host, typically an IPv6 literal. */
+    const size_t rbracket = name.find(']', 1);
+    if (rbracket == grpc_core::StringView::npos) {
+      /* Unmatched [ */
+      return false;
+    }
+    if (rbracket == name.size() - 1) {
+      /* ]<end> */
+      *port = StringView();
+    } else if (name[rbracket + 1] == ':') {
+      /* ]:<port?> */
+      *port = name.substr(rbracket + 2, name.size() - rbracket - 2);
+      *has_port = true;
+    } else {
+      /* ]<invalid> */
+      return false;
+    }
+    *host = name.substr(1, rbracket - 1);
+    if (host->find(':') == grpc_core::StringView::npos) {
+      /* Require all bracketed hosts to contain a colon, because a hostname or
+         IPv4 address should never use brackets. */
+      *host = StringView();
+      return false;
+    }
+  } else {
+    size_t colon = name.find(':');
+    if (colon != grpc_core::StringView::npos &&
+        name.find(':', colon + 1) == grpc_core::StringView::npos) {
+      /* Exactly 1 colon.  Split into host:port. */
+      *host = name.substr(0, colon);
+      *port = name.substr(colon + 1, name.size() - colon - 1);
+      *has_port = true;
+    } else {
+      /* 0 or 2+ colons.  Bare hostname or IPv6 litearal. */
+      *host = name;
+      *port = StringView();
+    }
+  }
+  return true;
+}
+}  // namespace
+
+bool SplitHostPort(StringView name, StringView* host, StringView* port) {
+  bool unused;
+  return DoSplitHostPort(name, host, port, &unused);
+}
+
+bool SplitHostPort(StringView name, grpc_core::UniquePtr<char>* host,
+                   grpc_core::UniquePtr<char>* port) {
+  GPR_DEBUG_ASSERT(host != nullptr && *host == nullptr);
+  GPR_DEBUG_ASSERT(port != nullptr && *port == nullptr);
+  StringView host_view;
+  StringView port_view;
+  bool has_port;
+  const bool ret = DoSplitHostPort(name, &host_view, &port_view, &has_port);
+  if (ret) {
+    // We always set the host, but port is set only when DoSplitHostPort find a
+    // port in the string, to remain backward compatible with the old
+    // gpr_split_host_port API.
+    *host = StringViewToCString(host_view);
+    if (has_port) {
+      *port = StringViewToCString(port_view);
+    }
+  }
+  return ret;
+}
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.h
new file mode 100644
index 0000000..c692f99
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/host_port.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_HOST_PORT_H
+#define GRPC_CORE_LIB_GPRPP_HOST_PORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+/** Given a host and port, creates a newly-allocated string of the form
+   "host:port" or "[ho:st]:port", depending on whether the host contains colons
+   like an IPv6 literal.  If the host is already bracketed, then additional
+   brackets will not be added.
+
+   Usage is similar to gpr_asprintf: returns the number of bytes written
+   (excluding the final '\0'), and *out points to a string.
+
+   In the unlikely event of an error, returns -1 and sets *out to NULL. */
+int JoinHostPort(grpc_core::UniquePtr<char>* out, const char* host, int port);
+
+/** Given a name in the form "host:port" or "[ho:st]:port", split into hostname
+   and port number.
+
+   There are two variants of this method:
+   1) StringView output: port and host are returned as views on name.
+   2) char* output: port and host are copied into newly allocated strings.
+
+   Prefer variant (1) over (2), because no allocation or copy is performed in
+   variant (1).  Use (2) only when interacting with C API that mandate
+   null-terminated strings.
+
+   Return true on success, false on failure. Guarantees *host and *port are
+   cleared on failure. */
+bool SplitHostPort(StringView name, StringView* host, StringView* port);
+bool SplitHostPort(StringView name, grpc_core::UniquePtr<char>* host,
+                   grpc_core::UniquePtr<char>* port);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_HOST_PORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/inlined_vector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/inlined_vector.h
new file mode 100644
index 0000000..3cad99d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/inlined_vector.h	
@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H
+#define GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cassert>
+#include <cstring>
+
+#include "absl/container/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+template <typename T, size_t N, typename A = std::allocator<T>>
+using InlinedVector = absl::InlinedVector<T, N, A>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_INLINED_VECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/manual_constructor.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/manual_constructor.h
new file mode 100644
index 0000000..7f827ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/manual_constructor.h	
@@ -0,0 +1,213 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MANUAL_CONSTRUCTOR_H
+#define GRPC_CORE_LIB_GPRPP_MANUAL_CONSTRUCTOR_H
+
+// manually construct a region of memory with some type
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include <grpc/support/log.h>
+
+namespace grpc_core {
+
+// this contains templated helpers needed to implement the ManualConstructors
+// in this file.
+namespace manual_ctor_impl {
+
+// is_one_of returns true it a class, Member, is present in a variadic list of
+// classes, List.
+template <class Member, class... List>
+class is_one_of;
+
+template <class Member, class... List>
+class is_one_of<Member, Member, List...> {
+ public:
+  static constexpr const bool value = true;
+};
+
+template <class Member, class A, class... List>
+class is_one_of<Member, A, List...> {
+ public:
+  static constexpr const bool value = is_one_of<Member, List...>::value;
+};
+
+template <class Member>
+class is_one_of<Member> {
+ public:
+  static constexpr const bool value = false;
+};
+
+// max_size_of returns sizeof(Type) for the largest type in the variadic list
+// of classes, Types.
+template <class... Types>
+class max_size_of;
+
+template <class A>
+class max_size_of<A> {
+ public:
+  static constexpr const size_t value = sizeof(A);
+};
+
+template <class A, class... B>
+class max_size_of<A, B...> {
+ public:
+  static constexpr const size_t value = sizeof(A) > max_size_of<B...>::value
+                                            ? sizeof(A)
+                                            : max_size_of<B...>::value;
+};
+
+// max_size_of returns alignof(Type) for the largest type in the variadic list
+// of classes, Types.
+template <class... Types>
+class max_align_of;
+
+template <class A>
+class max_align_of<A> {
+ public:
+  static constexpr const size_t value = alignof(A);
+};
+
+template <class A, class... B>
+class max_align_of<A, B...> {
+ public:
+  static constexpr const size_t value = alignof(A) > max_align_of<B...>::value
+                                            ? alignof(A)
+                                            : max_align_of<B...>::value;
+};
+
+}  // namespace manual_ctor_impl
+
+template <class BaseType, class... DerivedTypes>
+class PolymorphicManualConstructor {
+ public:
+  // No constructor or destructor because one of the most useful uses of
+  // this class is as part of a union, and members of a union could not have
+  // constructors or destructors till C++11.  And, anyway, the whole point of
+  // this class is to bypass constructor and destructor.
+
+  BaseType* get() { return reinterpret_cast<BaseType*>(&space_); }
+  const BaseType* get() const {
+    return reinterpret_cast<const BaseType*>(&space_);
+  }
+
+  BaseType* operator->() { return get(); }
+  const BaseType* operator->() const { return get(); }
+
+  BaseType& operator*() { return *get(); }
+  const BaseType& operator*() const { return *get(); }
+
+  template <class DerivedType>
+  void Init() {
+    FinishInit(new (&space_) DerivedType);
+  }
+
+  // Init() constructs the Type instance using the given arguments
+  // (which are forwarded to Type's constructor).
+  //
+  // Note that Init() with no arguments performs default-initialization,
+  // not zero-initialization (i.e it behaves the same as "new Type;", not
+  // "new Type();"), so it will leave non-class types uninitialized.
+  template <class DerivedType, typename... Ts>
+  void Init(Ts&&... args) {
+    FinishInit(new (&space_) DerivedType(std::forward<Ts>(args)...));
+  }
+
+  // Init() that is equivalent to copy and move construction.
+  // Enables usage like this:
+  //   ManualConstructor<std::vector<int>> v;
+  //   v.Init({1, 2, 3});
+  template <class DerivedType>
+  void Init(const DerivedType& x) {
+    FinishInit(new (&space_) DerivedType(x));
+  }
+  template <class DerivedType>
+  void Init(DerivedType&& x) {
+    FinishInit(new (&space_) DerivedType(std::move(x)));
+  }
+
+  void Destroy() { get()->~BaseType(); }
+
+ private:
+  template <class DerivedType>
+  void FinishInit(DerivedType* p) {
+    static_assert(
+        manual_ctor_impl::is_one_of<DerivedType, DerivedTypes...>::value,
+        "DerivedType must be one of the predeclared DerivedTypes");
+    GPR_ASSERT(static_cast<BaseType*>(p) == p);
+  }
+
+  typename std::aligned_storage<
+      grpc_core::manual_ctor_impl::max_size_of<DerivedTypes...>::value,
+      grpc_core::manual_ctor_impl::max_align_of<DerivedTypes...>::value>::type
+      space_;
+};
+
+template <typename Type>
+class ManualConstructor {
+ public:
+  // No constructor or destructor because one of the most useful uses of
+  // this class is as part of a union, and members of a union could not have
+  // constructors or destructors till C++11.  And, anyway, the whole point of
+  // this class is to bypass constructor and destructor.
+
+  Type* get() { return reinterpret_cast<Type*>(&space_); }
+  const Type* get() const { return reinterpret_cast<const Type*>(&space_); }
+
+  Type* operator->() { return get(); }
+  const Type* operator->() const { return get(); }
+
+  Type& operator*() { return *get(); }
+  const Type& operator*() const { return *get(); }
+
+  void Init() { new (&space_) Type; }
+
+  // Init() constructs the Type instance using the given arguments
+  // (which are forwarded to Type's constructor).
+  //
+  // Note that Init() with no arguments performs default-initialization,
+  // not zero-initialization (i.e it behaves the same as "new Type;", not
+  // "new Type();"), so it will leave non-class types uninitialized.
+  template <typename... Ts>
+  void Init(Ts&&... args) {
+    new (&space_) Type(std::forward<Ts>(args)...);
+  }
+
+  // Init() that is equivalent to copy and move construction.
+  // Enables usage like this:
+  //   ManualConstructor<std::vector<int>> v;
+  //   v.Init({1, 2, 3});
+  void Init(const Type& x) { new (&space_) Type(x); }
+  void Init(Type&& x) { new (&space_) Type(std::move(x)); }
+
+  void Destroy() { get()->~Type(); }
+
+ private:
+  typename std::aligned_storage<sizeof(Type), alignof(Type)>::type space_;
+};
+
+}  // namespace grpc_core
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/map.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/map.h
new file mode 100644
index 0000000..033b861
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/map.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MAP_H
+#define GRPC_CORE_LIB_GPRPP_MAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <map>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+struct StringLess {
+  bool operator()(const char* a, const char* b) const {
+    return strcmp(a, b) < 0;
+  }
+  bool operator()(const grpc_core::UniquePtr<char>& a,
+                  const grpc_core::UniquePtr<char>& b) const {
+    return strcmp(a.get(), b.get()) < 0;
+  }
+  bool operator()(const StringView& a, const StringView& b) const {
+    const size_t min_size = std::min(a.size(), b.size());
+    int c = strncmp(a.data(), b.data(), min_size);
+    if (c != 0) return c < 0;
+    return a.size() < b.size();
+  }
+};
+
+template <typename T>
+struct RefCountedPtrLess {
+  bool operator()(const RefCountedPtr<T>& p1,
+                  const RefCountedPtr<T>& p2) const {
+    return p1.get() < p2.get();
+  }
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/memory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/memory.h
new file mode 100644
index 0000000..4edc9b3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/memory.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MEMORY_H
+#define GRPC_CORE_LIB_GPRPP_MEMORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <limits>
+#include <memory>
+#include <utility>
+
+#include "absl/memory/memory.h"
+
+namespace grpc_core {
+
+class DefaultDeleteChar {
+ public:
+  void operator()(char* p) {
+    if (p == nullptr) return;
+    gpr_free(p);
+  }
+};
+
+// UniquePtr<T> is only allowed for char and UniquePtr<char> is deprecated
+// in favor of std::string. UniquePtr<char> is equivalent std::unique_ptr
+// except that it uses gpr_free for deleter.
+template <typename T>
+using UniquePtr = std::unique_ptr<T, DefaultDeleteChar>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MEMORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.cc
new file mode 100644
index 0000000..2bf9981
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.cc	
@@ -0,0 +1,108 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/mpscq.h"
+
+namespace grpc_core {
+
+//
+// MultiProducerSingleConsumerQueue
+//
+
+bool MultiProducerSingleConsumerQueue::Push(Node* node) {
+  node->next.Store(nullptr, MemoryOrder::RELAXED);
+  Node* prev = head_.Exchange(node, MemoryOrder::ACQ_REL);
+  prev->next.Store(node, MemoryOrder::RELEASE);
+  return prev == &stub_;
+}
+
+MultiProducerSingleConsumerQueue::Node*
+MultiProducerSingleConsumerQueue::Pop() {
+  bool empty;
+  return PopAndCheckEnd(&empty);
+}
+
+MultiProducerSingleConsumerQueue::Node*
+MultiProducerSingleConsumerQueue::PopAndCheckEnd(bool* empty) {
+  Node* tail = tail_;
+  Node* next = tail_->next.Load(MemoryOrder::ACQUIRE);
+  if (tail == &stub_) {
+    // indicates the list is actually (ephemerally) empty
+    if (next == nullptr) {
+      *empty = true;
+      return nullptr;
+    }
+    tail_ = next;
+    tail = next;
+    next = tail->next.Load(MemoryOrder::ACQUIRE);
+  }
+  if (next != nullptr) {
+    *empty = false;
+    tail_ = next;
+    return tail;
+  }
+  Node* head = head_.Load(MemoryOrder::ACQUIRE);
+  if (tail != head) {
+    *empty = false;
+    // indicates a retry is in order: we're still adding
+    return nullptr;
+  }
+  Push(&stub_);
+  next = tail->next.Load(MemoryOrder::ACQUIRE);
+  if (next != nullptr) {
+    *empty = false;
+    tail_ = next;
+    return tail;
+  }
+  // indicates a retry is in order: we're still adding
+  *empty = false;
+  return nullptr;
+}
+
+//
+// LockedMultiProducerSingleConsumerQueue
+//
+
+bool LockedMultiProducerSingleConsumerQueue::Push(Node* node) {
+  return queue_.Push(node);
+}
+
+LockedMultiProducerSingleConsumerQueue::Node*
+LockedMultiProducerSingleConsumerQueue::TryPop() {
+  if (gpr_mu_trylock(mu_.get())) {
+    Node* node = queue_.Pop();
+    gpr_mu_unlock(mu_.get());
+    return node;
+  }
+  return nullptr;
+}
+
+LockedMultiProducerSingleConsumerQueue::Node*
+LockedMultiProducerSingleConsumerQueue::Pop() {
+  MutexLock lock(&mu_);
+  bool empty = false;
+  Node* node;
+  do {
+    node = queue_.PopAndCheckEnd(&empty);
+  } while (node == nullptr && !empty);
+  return node;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.h
new file mode 100644
index 0000000..a1c04ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/mpscq.h	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_MPSCQ_H
+#define GRPC_CORE_LIB_GPRPP_MPSCQ_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+
+#include <grpc/support/log.h>
+
+namespace grpc_core {
+
+// Multiple-producer single-consumer lock free queue, based upon the
+// implementation from Dmitry Vyukov here:
+// http://www.1024cores.net/home/lock-free-algorithms/queues/intrusive-mpsc-node-based-queue
+class MultiProducerSingleConsumerQueue {
+ public:
+  // List node.  Application node types can inherit from this.
+  struct Node {
+    Atomic<Node*> next;
+  };
+
+  MultiProducerSingleConsumerQueue() : head_{&stub_}, tail_(&stub_) {}
+  ~MultiProducerSingleConsumerQueue() {
+    GPR_ASSERT(head_.Load(MemoryOrder::RELAXED) == &stub_);
+    GPR_ASSERT(tail_ == &stub_);
+  }
+
+  // Push a node
+  // Thread safe - can be called from multiple threads concurrently
+  // Returns true if this was possibly the first node (may return true
+  // sporadically, will not return false sporadically)
+  bool Push(Node* node);
+  // Pop a node (returns NULL if no node is ready - which doesn't indicate that
+  // the queue is empty!!)
+  // Thread compatible - can only be called from one thread at a time
+  Node* Pop();
+  // Pop a node; sets *empty to true if the queue is empty, or false if it is
+  // not.
+  Node* PopAndCheckEnd(bool* empty);
+
+ private:
+  // make sure head & tail don't share a cacheline
+  union {
+    char padding_[GPR_CACHELINE_SIZE];
+    Atomic<Node*> head_;
+  };
+  Node* tail_;
+  Node stub_;
+};
+
+// An mpscq with a lock: it's safe to pop from multiple threads, but doing
+// only one thread will succeed concurrently.
+class LockedMultiProducerSingleConsumerQueue {
+ public:
+  typedef MultiProducerSingleConsumerQueue::Node Node;
+
+  // Push a node
+  // Thread safe - can be called from multiple threads concurrently
+  // Returns true if this was possibly the first node (may return true
+  // sporadically, will not return false sporadically)
+  bool Push(Node* node);
+
+  // Pop a node (returns NULL if no node is ready - which doesn't indicate that
+  // the queue is empty!!)
+  // Thread safe - can be called from multiple threads concurrently
+  Node* TryPop();
+
+  // Pop a node.  Returns NULL only if the queue was empty at some point after
+  // calling this function
+  Node* Pop();
+
+ private:
+  MultiProducerSingleConsumerQueue queue_;
+  Mutex mu_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_MPSCQ_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/optional.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/optional.h
new file mode 100644
index 0000000..f4535bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/optional.h	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_OPTIONAL_H
+#define GRPC_CORE_LIB_GPRPP_OPTIONAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "absl/types/optional.h"
+
+namespace grpc_core {
+
+template <typename T>
+using Optional = absl::optional<T>;
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_OPTIONAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/orphanable.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/orphanable.h
new file mode 100644
index 0000000..79542de
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/orphanable.h	
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_ORPHANABLE_H
+#define GRPC_CORE_LIB_GPRPP_ORPHANABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <cinttypes>
+#include <memory>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// A base class for orphanable objects, which have one external owner
+// but are not necessarily destroyed immediately when the external owner
+// gives up ownership.  Instead, the owner calls the object's Orphan()
+// method, and the object then takes responsibility for its own cleanup
+// and destruction.
+class Orphanable {
+ public:
+  // Gives up ownership of the object.  The implementation must arrange
+  // to eventually destroy the object without further interaction from the
+  // caller.
+  virtual void Orphan() = 0;
+
+  // Not copyable or movable.
+  Orphanable(const Orphanable&) = delete;
+  Orphanable& operator=(const Orphanable&) = delete;
+
+ protected:
+  Orphanable() {}
+  virtual ~Orphanable() {}
+};
+
+class OrphanableDelete {
+ public:
+  template <typename T>
+  void operator()(T* p) {
+    p->Orphan();
+  }
+};
+
+template <typename T, typename Deleter = OrphanableDelete>
+using OrphanablePtr = std::unique_ptr<T, Deleter>;
+
+template <typename T, typename... Args>
+inline OrphanablePtr<T> MakeOrphanable(Args&&... args) {
+  return OrphanablePtr<T>(new T(std::forward<Args>(args)...));
+}
+
+// A type of Orphanable with internal ref-counting.
+template <typename Child>
+class InternallyRefCounted : public Orphanable {
+ public:
+  // Not copyable nor movable.
+  InternallyRefCounted(const InternallyRefCounted&) = delete;
+  InternallyRefCounted& operator=(const InternallyRefCounted&) = delete;
+
+ protected:
+  // Allow RefCountedPtr<> to access Unref() and IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  explicit InternallyRefCounted(TraceFlagT* trace_flag = nullptr,
+                                intptr_t initial_refcount = 1)
+      : refs_(initial_refcount, trace_flag) {}
+  virtual ~InternallyRefCounted() = default;
+
+  RefCountedPtr<Child> Ref() GRPC_MUST_USE_RESULT {
+    IncrementRefCount();
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+  RefCountedPtr<Child> Ref(const DebugLocation& location,
+                           const char* reason) GRPC_MUST_USE_RESULT {
+    IncrementRefCount(location, reason);
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete this;
+    }
+  }
+  void Unref(const DebugLocation& location, const char* reason) {
+    if (GPR_UNLIKELY(refs_.Unref(location, reason))) {
+      delete this;
+    }
+  }
+
+ private:
+  void IncrementRefCount() { refs_.Ref(); }
+  void IncrementRefCount(const DebugLocation& location, const char* reason) {
+    refs_.Ref(location, reason);
+  }
+
+  grpc_core::RefCount refs_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_ORPHANABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted.h
new file mode 100644
index 0000000..44070e5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted.h	
@@ -0,0 +1,312 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_REF_COUNTED_H
+#define GRPC_CORE_LIB_GPRPP_REF_COUNTED_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <atomic>
+#include <cassert>
+#include <cinttypes>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+
+namespace grpc_core {
+
+// PolymorphicRefCount enforces polymorphic destruction of RefCounted.
+class PolymorphicRefCount {
+ public:
+  virtual ~PolymorphicRefCount() = default;
+};
+
+// NonPolymorphicRefCount does not enforce polymorphic destruction of
+// RefCounted. Please refer to grpc_core::RefCounted for more details, and
+// when in doubt use PolymorphicRefCount.
+class NonPolymorphicRefCount {
+ public:
+  ~NonPolymorphicRefCount() = default;
+};
+
+// RefCount is a simple atomic ref-count.
+//
+// This is a C++ implementation of gpr_refcount, with inline functions. Due to
+// inline functions, this class is significantly more efficient than
+// gpr_refcount and should be preferred over gpr_refcount whenever possible.
+//
+// TODO(soheil): Remove gpr_refcount after submitting the GRFC and the paragraph
+//               above.
+class RefCount {
+ public:
+  using Value = intptr_t;
+
+  // `init` is the initial refcount stored in this object.
+  //
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  constexpr explicit RefCount(
+      Value init = 1,
+      TraceFlagT*
+#ifndef NDEBUG
+          // Leave unnamed if NDEBUG to avoid unused parameter warning
+          trace_flag
+#endif
+      = nullptr)
+      :
+#ifndef NDEBUG
+        trace_flag_(trace_flag),
+#endif
+        value_(init) {
+  }
+
+  // Increases the ref-count by `n`.
+  void Ref(Value n = 1) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(n, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p ref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + n);
+    }
+#else
+    value_.FetchAdd(n, MemoryOrder::RELAXED);
+#endif
+  }
+  void Ref(const DebugLocation& location, const char* reason, Value n = 1) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(n, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d ref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + n, reason);
+    }
+#else
+    // Use conditionally-important parameters
+    (void)location;
+    (void)reason;
+
+    value_.FetchAdd(n, MemoryOrder::RELAXED);
+#endif
+  }
+
+  // Similar to Ref() with an assert on the ref-count being non-zero.
+  void RefNonZero() {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(1, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p ref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + 1);
+    }
+    assert(prior > 0);
+#else
+    value_.FetchAdd(1, MemoryOrder::RELAXED);
+#endif
+  }
+  void RefNonZero(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    const Value prior = value_.FetchAdd(1, MemoryOrder::RELAXED);
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d ref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + 1, reason);
+    }
+    assert(prior > 0);
+#else
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+    RefNonZero();
+#endif
+  }
+
+  bool RefIfNonZero() {
+#ifndef NDEBUG
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      const Value prior = get();
+      gpr_log(GPR_INFO, "%s:%p ref_if_non_zero %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag_->name(), this, prior, prior + 1);
+    }
+#endif
+    return value_.IncrementIfNonzero();
+  }
+  bool RefIfNonZero(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    if (trace_flag_ != nullptr && trace_flag_->enabled()) {
+      const Value prior = get();
+      gpr_log(GPR_INFO,
+              "%s:%p %s:%d ref_if_non_zero "
+              "%" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag_->name(), this, location.file(), location.line(),
+              prior, prior + 1, reason);
+    }
+#endif
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+    return value_.IncrementIfNonzero();
+  }
+
+  // Decrements the ref-count and returns true if the ref-count reaches 0.
+  bool Unref() {
+#ifndef NDEBUG
+    // Grab a copy of the trace flag before the atomic change, since we
+    // can't safely access it afterwards if we're going to be freed.
+    auto* trace_flag = trace_flag_;
+#endif
+    const Value prior = value_.FetchSub(1, MemoryOrder::ACQ_REL);
+#ifndef NDEBUG
+    if (trace_flag != nullptr && trace_flag->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p unref %" PRIdPTR " -> %" PRIdPTR,
+              trace_flag->name(), this, prior, prior - 1);
+    }
+    GPR_DEBUG_ASSERT(prior > 0);
+#endif
+    return prior == 1;
+  }
+  bool Unref(const DebugLocation& location, const char* reason) {
+#ifndef NDEBUG
+    // Grab a copy of the trace flag before the atomic change, since we
+    // can't safely access it afterwards if we're going to be freed.
+    auto* trace_flag = trace_flag_;
+#endif
+    const Value prior = value_.FetchSub(1, MemoryOrder::ACQ_REL);
+#ifndef NDEBUG
+    if (trace_flag != nullptr && trace_flag->enabled()) {
+      gpr_log(GPR_INFO, "%s:%p %s:%d unref %" PRIdPTR " -> %" PRIdPTR " %s",
+              trace_flag->name(), this, location.file(), location.line(), prior,
+              prior - 1, reason);
+    }
+    GPR_DEBUG_ASSERT(prior > 0);
+#else
+    // Avoid unused-parameter warnings for debug-only parameters
+    (void)location;
+    (void)reason;
+#endif
+    return prior == 1;
+  }
+
+ private:
+  Value get() const { return value_.Load(MemoryOrder::RELAXED); }
+
+#ifndef NDEBUG
+  TraceFlag* trace_flag_;
+#endif
+  Atomic<Value> value_;
+};
+
+// A base class for reference-counted objects.
+// New objects should be created via New() and start with a refcount of 1.
+// When the refcount reaches 0, the object will be deleted via delete .
+//
+// This will commonly be used by CRTP (curiously-recurring template pattern)
+// e.g., class MyClass : public RefCounted<MyClass>
+//
+// Use PolymorphicRefCount and NonPolymorphicRefCount to select between
+// different implementations of RefCounted.
+//
+// Note that NonPolymorphicRefCount does not support polymorphic destruction.
+// So, use NonPolymorphicRefCount only when both of the following conditions
+// are guaranteed to hold:
+// (a) Child is a concrete leaf class in RefCounted<Child>, and
+// (b) you are guaranteed to call Unref only on concrete leaf classes and not
+//     their parents.
+//
+// The following example is illegal, because calling Unref() will not call
+// the dtor of Child.
+//
+//    class Parent : public RefCounted<Parent, NonPolymorphicRefCount> {}
+//    class Child : public Parent {}
+//
+//    Child* ch;
+//    ch->Unref();
+//
+template <typename Child, typename Impl = PolymorphicRefCount>
+class RefCounted : public Impl {
+ public:
+  // Note: Depending on the Impl used, this dtor can be implicitly virtual.
+  ~RefCounted() = default;
+
+  RefCountedPtr<Child> Ref() GRPC_MUST_USE_RESULT {
+    IncrementRefCount();
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  RefCountedPtr<Child> Ref(const DebugLocation& location,
+                           const char* reason) GRPC_MUST_USE_RESULT {
+    IncrementRefCount(location, reason);
+    return RefCountedPtr<Child>(static_cast<Child*>(this));
+  }
+
+  // TODO(roth): Once all of our code is converted to C++ and can use
+  // RefCountedPtr<> instead of manual ref-counting, make this method
+  // private, since it will only be used by RefCountedPtr<>, which is a
+  // friend of this class.
+  void Unref() {
+    if (GPR_UNLIKELY(refs_.Unref())) {
+      delete static_cast<Child*>(this);
+    }
+  }
+  void Unref(const DebugLocation& location, const char* reason) {
+    if (GPR_UNLIKELY(refs_.Unref(location, reason))) {
+      delete static_cast<Child*>(this);
+    }
+  }
+
+  bool RefIfNonZero() { return refs_.RefIfNonZero(); }
+  bool RefIfNonZero(const DebugLocation& location, const char* reason) {
+    return refs_.RefIfNonZero(location, reason);
+  }
+
+  // Not copyable nor movable.
+  RefCounted(const RefCounted&) = delete;
+  RefCounted& operator=(const RefCounted&) = delete;
+
+ protected:
+  // TraceFlagT is defined to accept both DebugOnlyTraceFlag and TraceFlag.
+  // Note: RefCount tracing is only enabled on debug builds, even when a
+  //       TraceFlag is used.
+  template <typename TraceFlagT = TraceFlag>
+  explicit RefCounted(TraceFlagT* trace_flag = nullptr,
+                      intptr_t initial_refcount = 1)
+      : refs_(initial_refcount, trace_flag) {}
+
+ private:
+  // Allow RefCountedPtr<> to access IncrementRefCount().
+  template <typename T>
+  friend class RefCountedPtr;
+
+  void IncrementRefCount() { refs_.Ref(); }
+  void IncrementRefCount(const DebugLocation& location, const char* reason) {
+    refs_.Ref(location, reason);
+  }
+
+  RefCount refs_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_REF_COUNTED_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted_ptr.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted_ptr.h
new file mode 100644
index 0000000..4c5b465
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/ref_counted_ptr.h	
@@ -0,0 +1,187 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H
+#define GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <type_traits>
+#include <utility>
+
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+// A smart pointer class for objects that provide IncrementRefCount() and
+// Unref() methods, such as those provided by the RefCounted base class.
+template <typename T>
+class RefCountedPtr {
+ public:
+  RefCountedPtr() {}
+  RefCountedPtr(std::nullptr_t) {}
+
+  // If value is non-null, we take ownership of a ref to it.
+  template <typename Y>
+  explicit RefCountedPtr(Y* value) {
+    value_ = value;
+  }
+
+  // Move ctors.
+  RefCountedPtr(RefCountedPtr&& other) {
+    value_ = other.value_;
+    other.value_ = nullptr;
+  }
+  template <typename Y>
+  RefCountedPtr(RefCountedPtr<Y>&& other) {
+    value_ = static_cast<T*>(other.value_);
+    other.value_ = nullptr;
+  }
+
+  // Move assignment.
+  RefCountedPtr& operator=(RefCountedPtr&& other) {
+    reset(other.value_);
+    other.value_ = nullptr;
+    return *this;
+  }
+  template <typename Y>
+  RefCountedPtr& operator=(RefCountedPtr<Y>&& other) {
+    reset(other.value_);
+    other.value_ = nullptr;
+    return *this;
+  }
+
+  // Copy ctors.
+  RefCountedPtr(const RefCountedPtr& other) {
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    value_ = other.value_;
+  }
+  template <typename Y>
+  RefCountedPtr(const RefCountedPtr<Y>& other) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    value_ = static_cast<T*>(other.value_);
+  }
+
+  // Copy assignment.
+  RefCountedPtr& operator=(const RefCountedPtr& other) {
+    // Note: Order of reffing and unreffing is important here in case value_
+    // and other.value_ are the same object.
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    reset(other.value_);
+    return *this;
+  }
+  template <typename Y>
+  RefCountedPtr& operator=(const RefCountedPtr<Y>& other) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    // Note: Order of reffing and unreffing is important here in case value_
+    // and other.value_ are the same object.
+    if (other.value_ != nullptr) other.value_->IncrementRefCount();
+    reset(other.value_);
+    return *this;
+  }
+
+  ~RefCountedPtr() {
+    if (value_ != nullptr) value_->Unref();
+  }
+
+  void swap(RefCountedPtr& other) { std::swap(value_, other.value_); }
+
+  // If value is non-null, we take ownership of a ref to it.
+  void reset(T* value = nullptr) {
+    if (value_ != nullptr) value_->Unref();
+    value_ = value;
+  }
+  void reset(const DebugLocation& location, const char* reason,
+             T* value = nullptr) {
+    if (value_ != nullptr) value_->Unref(location, reason);
+    value_ = value;
+  }
+  template <typename Y>
+  void reset(Y* value = nullptr) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (value_ != nullptr) value_->Unref();
+    value_ = static_cast<T*>(value);
+  }
+  template <typename Y>
+  void reset(const DebugLocation& location, const char* reason,
+             Y* value = nullptr) {
+    static_assert(std::has_virtual_destructor<T>::value,
+                  "T does not have a virtual dtor");
+    if (value_ != nullptr) value_->Unref(location, reason);
+    value_ = static_cast<T*>(value);
+  }
+
+  // TODO(roth): This method exists solely as a transition mechanism to allow
+  // us to pass a ref to idiomatic C code that does not use RefCountedPtr<>.
+  // Once all of our code has been converted to idiomatic C++, this
+  // method should go away.
+  T* release() {
+    T* value = value_;
+    value_ = nullptr;
+    return value;
+  }
+
+  T* get() const { return value_; }
+
+  T& operator*() const { return *value_; }
+  T* operator->() const { return value_; }
+
+  template <typename Y>
+  bool operator==(const RefCountedPtr<Y>& other) const {
+    return value_ == other.value_;
+  }
+
+  template <typename Y>
+  bool operator==(const Y* other) const {
+    return value_ == other;
+  }
+
+  bool operator==(std::nullptr_t) const { return value_ == nullptr; }
+
+  template <typename Y>
+  bool operator!=(const RefCountedPtr<Y>& other) const {
+    return value_ != other.value_;
+  }
+
+  template <typename Y>
+  bool operator!=(const Y* other) const {
+    return value_ != other;
+  }
+
+  bool operator!=(std::nullptr_t) const { return value_ != nullptr; }
+
+ private:
+  template <typename Y>
+  friend class RefCountedPtr;
+
+  T* value_ = nullptr;
+};
+
+template <typename T, typename... Args>
+inline RefCountedPtr<T> MakeRefCounted(Args&&... args) {
+  return RefCountedPtr<T>(new T(std::forward<Args>(args)...));
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_REF_COUNTED_PTR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/string_view.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/string_view.h
new file mode 100644
index 0000000..bd4724b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/string_view.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPC_CORE_LIB_GPRPP_STRING_VIEW_H
+#define GRPC_CORE_LIB_GPRPP_STRING_VIEW_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <algorithm>
+#include <cstdint>
+#include <cstring>
+#include <limits>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+
+using StringView = absl::string_view;
+
+// Converts grpc_slice to StringView.
+inline absl::string_view StringViewFromSlice(const grpc_slice& slice) {
+  return absl::string_view(
+      reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(slice)),
+      GRPC_SLICE_LENGTH(slice));
+}
+
+// Creates a dup of the string viewed by this class.
+// Return value is null-terminated and never nullptr.
+inline grpc_core::UniquePtr<char> StringViewToCString(const StringView sv) {
+  char* str = static_cast<char*>(gpr_malloc(sv.size() + 1));
+  if (sv.size() > 0) memcpy(str, sv.data(), sv.size());
+  str[sv.size()] = '\0';
+  return grpc_core::UniquePtr<char>(str);
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_STRING_VIEW_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/sync.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/sync.h
new file mode 100644
index 0000000..0a911b1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/sync.h	
@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_SYNC_H
+#define GRPC_CORE_LIB_GPRPP_SYNC_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <grpc/impl/codegen/log.h>
+#include <grpc/impl/codegen/sync.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+// The core library is not accessible in C++ codegen headers, and vice versa.
+// Thus, we need to have duplicate headers with similar functionality.
+// Make sure any change to this file is also reflected in
+// include/grpcpp/impl/codegen/sync.h.
+//
+// Whenever possible, prefer using this file over <grpcpp/impl/codegen/sync.h>
+// since this file doesn't rely on g_core_codegen_interface and hence does not
+// pay the costs of virtual function calls.
+
+namespace grpc_core {
+
+class Mutex {
+ public:
+  Mutex() { gpr_mu_init(&mu_); }
+  ~Mutex() { gpr_mu_destroy(&mu_); }
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+
+  gpr_mu* get() { return &mu_; }
+  const gpr_mu* get() const { return &mu_; }
+
+ private:
+  gpr_mu mu_;
+};
+
+// MutexLock is a std::
+class MutexLock {
+ public:
+  explicit MutexLock(Mutex* mu) : mu_(mu->get()) { gpr_mu_lock(mu_); }
+  explicit MutexLock(gpr_mu* mu) : mu_(mu) { gpr_mu_lock(mu_); }
+  ~MutexLock() { gpr_mu_unlock(mu_); }
+
+  MutexLock(const MutexLock&) = delete;
+  MutexLock& operator=(const MutexLock&) = delete;
+
+ private:
+  gpr_mu* const mu_;
+};
+
+class ReleasableMutexLock {
+ public:
+  explicit ReleasableMutexLock(Mutex* mu) : mu_(mu->get()) { gpr_mu_lock(mu_); }
+  explicit ReleasableMutexLock(gpr_mu* mu) : mu_(mu) { gpr_mu_lock(mu_); }
+  ~ReleasableMutexLock() {
+    if (!released_) gpr_mu_unlock(mu_);
+  }
+
+  ReleasableMutexLock(const ReleasableMutexLock&) = delete;
+  ReleasableMutexLock& operator=(const ReleasableMutexLock&) = delete;
+
+  void Lock() {
+    GPR_DEBUG_ASSERT(released_);
+    gpr_mu_lock(mu_);
+    released_ = false;
+  }
+
+  void Unlock() {
+    GPR_DEBUG_ASSERT(!released_);
+    released_ = true;
+    gpr_mu_unlock(mu_);
+  }
+
+ private:
+  gpr_mu* const mu_;
+  bool released_ = false;
+};
+
+class CondVar {
+ public:
+  CondVar() { gpr_cv_init(&cv_); }
+  ~CondVar() { gpr_cv_destroy(&cv_); }
+
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+
+  void Signal() { gpr_cv_signal(&cv_); }
+  void Broadcast() { gpr_cv_broadcast(&cv_); }
+
+  int Wait(Mutex* mu) { return Wait(mu, gpr_inf_future(GPR_CLOCK_REALTIME)); }
+  int Wait(Mutex* mu, const gpr_timespec& deadline) {
+    return gpr_cv_wait(&cv_, mu->get(), deadline);
+  }
+
+  template <typename Predicate>
+  void WaitUntil(Mutex* mu, Predicate pred) {
+    while (!pred()) {
+      Wait(mu, gpr_inf_future(GPR_CLOCK_REALTIME));
+    }
+  }
+
+  // Returns true iff we timed-out
+  template <typename Predicate>
+  bool WaitUntil(Mutex* mu, Predicate pred, const gpr_timespec& deadline) {
+    while (!pred()) {
+      if (Wait(mu, deadline)) return true;
+    }
+    return false;
+  }
+
+ private:
+  gpr_cv cv_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_SYNC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd.h
new file mode 100644
index 0000000..8e50f54
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd.h	
@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPRPP_THD_H
+#define GRPC_CORE_LIB_GPRPP_THD_H
+
+/** Internal thread interface. */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd_id.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+namespace internal {
+
+/// Base class for platform-specific thread-state
+class ThreadInternalsInterface {
+ public:
+  virtual ~ThreadInternalsInterface() {}
+  virtual void Start() = 0;
+  virtual void Join() = 0;
+};
+
+}  // namespace internal
+
+class Thread {
+ public:
+  class Options {
+   public:
+    Options() : joinable_(true), tracked_(true), stack_size_(0) {}
+    /// Set whether the thread is joinable or detached.
+    Options& set_joinable(bool joinable) {
+      joinable_ = joinable;
+      return *this;
+    }
+    bool joinable() const { return joinable_; }
+
+    /// Set whether the thread is tracked for fork support.
+    Options& set_tracked(bool tracked) {
+      tracked_ = tracked;
+      return *this;
+    }
+    bool tracked() const { return tracked_; }
+
+    /// Sets thread stack size (in bytes). Sets to 0 will use the default stack
+    /// size which is 64KB for Windows threads and 2MB for Posix(x86) threads.
+    Options& set_stack_size(size_t bytes) {
+      stack_size_ = bytes;
+      return *this;
+    }
+    size_t stack_size() const { return stack_size_; }
+
+   private:
+    bool joinable_;
+    bool tracked_;
+    size_t stack_size_;
+  };
+  /// Default constructor only to allow use in structs that lack constructors
+  /// Does not produce a validly-constructed thread; must later
+  /// use placement new to construct a real thread. Does not init mu_ and cv_
+  Thread() : state_(FAKE), impl_(nullptr) {}
+
+  /// Normal constructor to create a thread with name \a thd_name,
+  /// which will execute a thread based on function \a thd_body
+  /// with argument \a arg once it is started.
+  /// The optional \a success argument indicates whether the thread
+  /// is successfully created.
+  /// The optional \a options can be used to set the thread detachable.
+  Thread(const char* thd_name, void (*thd_body)(void* arg), void* arg,
+         bool* success = nullptr, const Options& options = Options());
+
+  /// Move constructor for thread. After this is called, the other thread
+  /// no longer represents a living thread object
+  Thread(Thread&& other)
+      : state_(other.state_), impl_(other.impl_), options_(other.options_) {
+    other.state_ = MOVED;
+    other.impl_ = nullptr;
+    other.options_ = Options();
+  }
+
+  /// Move assignment operator for thread. After this is called, the other
+  /// thread no longer represents a living thread object. Not allowed if this
+  /// thread actually exists
+  Thread& operator=(Thread&& other) {
+    if (this != &other) {
+      // TODO(vjpai): if we can be sure that all Thread's are actually
+      // constructed, then we should assert GPR_ASSERT(impl_ == nullptr) here.
+      // However, as long as threads come in structures that are
+      // allocated via gpr_malloc, this will not be the case, so we cannot
+      // assert it for the time being.
+      state_ = other.state_;
+      impl_ = other.impl_;
+      options_ = other.options_;
+      other.state_ = MOVED;
+      other.impl_ = nullptr;
+      other.options_ = Options();
+    }
+    return *this;
+  }
+
+  /// The destructor is strictly optional; either the thread never came to life
+  /// and the constructor itself killed it, or it has already been joined and
+  /// the Join function kills it, or it was detached (non-joinable) and it has
+  /// run to completion and is now killing itself. The destructor shouldn't have
+  /// to do anything.
+  ~Thread() { GPR_ASSERT(!options_.joinable() || impl_ == nullptr); }
+
+  void Start() {
+    if (impl_ != nullptr) {
+      GPR_ASSERT(state_ == ALIVE);
+      state_ = STARTED;
+      impl_->Start();
+      // If the Thread is not joinable, then the impl_ will cause the deletion
+      // of this Thread object when the thread function completes. Since no
+      // other operation is allowed to a detached thread after Start, there is
+      // no need to change the value of the impl_ or state_ . The next operation
+      // on this object will be the deletion, which will trigger the destructor.
+    } else {
+      GPR_ASSERT(state_ == FAILED);
+    }
+  }
+
+  // It is only legal to call Join if the Thread is created as joinable.
+  void Join() {
+    if (impl_ != nullptr) {
+      impl_->Join();
+      delete impl_;
+      state_ = DONE;
+      impl_ = nullptr;
+    } else {
+      GPR_ASSERT(state_ == FAILED);
+    }
+  }
+
+ private:
+  Thread(const Thread&) = delete;
+  Thread& operator=(const Thread&) = delete;
+
+  /// The thread states are as follows:
+  /// FAKE -- just a dummy placeholder Thread created by the default constructor
+  /// ALIVE -- an actual thread of control exists associated with this thread
+  /// STARTED -- the thread of control has been started
+  /// DONE -- the thread of control has completed and been joined
+  /// FAILED -- the thread of control never came alive
+  /// MOVED -- contents were moved out and we're no longer tracking them
+  enum ThreadState { FAKE, ALIVE, STARTED, DONE, FAILED, MOVED };
+  ThreadState state_;
+  internal::ThreadInternalsInterface* impl_;
+  Options options_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_GPRPP_THD_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_posix.cc
new file mode 100644
index 0000000..4df41a6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_posix.cc	
@@ -0,0 +1,204 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Posix implementation for gpr threads. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_SYNC
+
+#include "src/core/lib/gprpp/thd.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd_id.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/fork.h"
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+namespace {
+class ThreadInternalsPosix;
+struct thd_arg {
+  ThreadInternalsPosix* thread;
+  void (*body)(void* arg); /* body of a thread */
+  void* arg;               /* argument to a thread */
+  const char* name;        /* name of thread. Can be nullptr. */
+  bool joinable;
+  bool tracked;
+};
+
+size_t RoundUpToPageSize(size_t size) {
+  // TODO(yunjiaw): Change this variable (page_size) to a function-level static
+  // when possible
+  size_t page_size = static_cast<size_t>(sysconf(_SC_PAGESIZE));
+  return (size + page_size - 1) & ~(page_size - 1);
+}
+
+// Returns the minimum valid stack size that can be passed to
+// pthread_attr_setstacksize.
+size_t MinValidStackSize(size_t request_size) {
+  size_t min_stacksize = sysconf(_SC_THREAD_STACK_MIN);
+  if (request_size < min_stacksize) {
+    request_size = min_stacksize;
+  }
+
+  // On some systems, pthread_attr_setstacksize() can fail if stacksize is
+  // not a multiple of the system page size.
+  return RoundUpToPageSize(request_size);
+}
+
+class ThreadInternalsPosix : public internal::ThreadInternalsInterface {
+ public:
+  ThreadInternalsPosix(const char* thd_name, void (*thd_body)(void* arg),
+                       void* arg, bool* success, const Thread::Options& options)
+      : started_(false) {
+    gpr_mu_init(&mu_);
+    gpr_cv_init(&ready_);
+    pthread_attr_t attr;
+    /* don't use gpr_malloc as we may cause an infinite recursion with
+     * the profiling code */
+    thd_arg* info = static_cast<thd_arg*>(malloc(sizeof(*info)));
+    GPR_ASSERT(info != nullptr);
+    info->thread = this;
+    info->body = thd_body;
+    info->arg = arg;
+    info->name = thd_name;
+    info->joinable = options.joinable();
+    info->tracked = options.tracked();
+    if (options.tracked()) {
+      Fork::IncThreadCount();
+    }
+
+    GPR_ASSERT(pthread_attr_init(&attr) == 0);
+    if (options.joinable()) {
+      GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE) ==
+                 0);
+    } else {
+      GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) ==
+                 0);
+    }
+
+    if (options.stack_size() != 0) {
+      size_t stack_size = MinValidStackSize(options.stack_size());
+      GPR_ASSERT(pthread_attr_setstacksize(&attr, stack_size) == 0);
+    }
+
+    *success =
+        (pthread_create(&pthread_id_, &attr,
+                        [](void* v) -> void* {
+                          thd_arg arg = *static_cast<thd_arg*>(v);
+                          free(v);
+                          if (arg.name != nullptr) {
+#if GPR_APPLE_PTHREAD_NAME
+                            /* Apple supports 64 characters, and will
+                             * truncate if it's longer. */
+                            pthread_setname_np(arg.name);
+#elif GPR_LINUX_PTHREAD_NAME
+                            /* Linux supports 16 characters max, and will
+                             * error if it's longer. */
+                            char buf[16];
+                            size_t buf_len = GPR_ARRAY_SIZE(buf) - 1;
+                            strncpy(buf, arg.name, buf_len);
+                            buf[buf_len] = '\0';
+                            pthread_setname_np(pthread_self(), buf);
+#endif  // GPR_APPLE_PTHREAD_NAME
+                          }
+
+                          gpr_mu_lock(&arg.thread->mu_);
+                          while (!arg.thread->started_) {
+                            gpr_cv_wait(&arg.thread->ready_, &arg.thread->mu_,
+                                        gpr_inf_future(GPR_CLOCK_MONOTONIC));
+                          }
+                          gpr_mu_unlock(&arg.thread->mu_);
+
+                          if (!arg.joinable) {
+                            delete arg.thread;
+                          }
+
+                          (*arg.body)(arg.arg);
+                          if (arg.tracked) {
+                            Fork::DecThreadCount();
+                          }
+                          return nullptr;
+                        },
+                        info) == 0);
+
+    GPR_ASSERT(pthread_attr_destroy(&attr) == 0);
+
+    if (!(*success)) {
+      /* don't use gpr_free, as this was allocated using malloc (see above) */
+      free(info);
+      if (options.tracked()) {
+        Fork::DecThreadCount();
+      }
+    }
+  }
+
+  ~ThreadInternalsPosix() override {
+    gpr_mu_destroy(&mu_);
+    gpr_cv_destroy(&ready_);
+  }
+
+  void Start() override {
+    gpr_mu_lock(&mu_);
+    started_ = true;
+    gpr_cv_signal(&ready_);
+    gpr_mu_unlock(&mu_);
+  }
+
+  void Join() override { pthread_join(pthread_id_, nullptr); }
+
+ private:
+  gpr_mu mu_;
+  gpr_cv ready_;
+  bool started_;
+  pthread_t pthread_id_;
+};
+
+}  // namespace
+
+Thread::Thread(const char* thd_name, void (*thd_body)(void* arg), void* arg,
+               bool* success, const Options& options)
+    : options_(options) {
+  bool outcome = false;
+  impl_ = new ThreadInternalsPosix(thd_name, thd_body, arg, &outcome, options);
+  if (outcome) {
+    state_ = ALIVE;
+  } else {
+    state_ = FAILED;
+    delete impl_;
+    impl_ = nullptr;
+  }
+
+  if (success != nullptr) {
+    *success = outcome;
+  }
+}
+}  // namespace grpc_core
+
+// The following is in the external namespace as it is exposed as C89 API
+gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)pthread_self(); }
+
+#endif /* GPR_POSIX_SYNC */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_windows.cc
new file mode 100644
index 0000000..bd3b7a3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/gprpp/thd_windows.cc	
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Windows implementation for gpr threads. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+#include "src/core/lib/gprpp/thd.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/thd_id.h>
+#include <string.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+#if defined(_MSC_VER)
+#define thread_local __declspec(thread)
+#elif defined(__GNUC__)
+#define thread_local __thread
+#else
+#error "Unknown compiler - please file a bug report"
+#endif
+
+namespace {
+class ThreadInternalsWindows;
+struct thd_info {
+  ThreadInternalsWindows* thread;
+  void (*body)(void* arg); /* body of a thread */
+  void* arg;               /* argument to a thread */
+  HANDLE join_event;       /* the join event */
+  bool joinable;           /* whether it is joinable */
+};
+
+thread_local struct thd_info* g_thd_info;
+
+class ThreadInternalsWindows
+    : public grpc_core::internal::ThreadInternalsInterface {
+ public:
+  ThreadInternalsWindows(void (*thd_body)(void* arg), void* arg, bool* success,
+                         const grpc_core::Thread::Options& options)
+      : started_(false) {
+    gpr_mu_init(&mu_);
+    gpr_cv_init(&ready_);
+
+    HANDLE handle;
+    info_ = (struct thd_info*)gpr_malloc(sizeof(*info_));
+    info_->thread = this;
+    info_->body = thd_body;
+    info_->arg = arg;
+    info_->join_event = nullptr;
+    info_->joinable = options.joinable();
+    if (info_->joinable) {
+      info_->join_event = CreateEvent(nullptr, FALSE, FALSE, nullptr);
+      if (info_->join_event == nullptr) {
+        gpr_free(info_);
+        *success = false;
+        return;
+      }
+    }
+
+    if (options.stack_size() != 0) {
+      // Windows will round up the given stack_size value to nearest page.
+      handle = CreateThread(nullptr, options.stack_size(), thread_body, info_,
+                            0, nullptr);
+    } else {
+      handle = CreateThread(nullptr, 64 * 1024, thread_body, info_, 0, nullptr);
+    }
+
+    if (handle == nullptr) {
+      destroy_thread();
+      *success = false;
+    } else {
+      CloseHandle(handle);
+      *success = true;
+    }
+  }
+
+  ~ThreadInternalsWindows() override {
+    gpr_mu_destroy(&mu_);
+    gpr_cv_destroy(&ready_);
+  }
+
+  void Start() override {
+    gpr_mu_lock(&mu_);
+    started_ = true;
+    gpr_cv_signal(&ready_);
+    gpr_mu_unlock(&mu_);
+  }
+
+  void Join() override {
+    DWORD ret = WaitForSingleObject(info_->join_event, INFINITE);
+    GPR_ASSERT(ret == WAIT_OBJECT_0);
+    destroy_thread();
+  }
+
+ private:
+  static DWORD WINAPI thread_body(void* v) {
+    g_thd_info = static_cast<thd_info*>(v);
+    gpr_mu_lock(&g_thd_info->thread->mu_);
+    while (!g_thd_info->thread->started_) {
+      gpr_cv_wait(&g_thd_info->thread->ready_, &g_thd_info->thread->mu_,
+                  gpr_inf_future(GPR_CLOCK_MONOTONIC));
+    }
+    gpr_mu_unlock(&g_thd_info->thread->mu_);
+    if (!g_thd_info->joinable) {
+      delete g_thd_info->thread;
+      g_thd_info->thread = nullptr;
+    }
+    g_thd_info->body(g_thd_info->arg);
+    if (g_thd_info->joinable) {
+      BOOL ret = SetEvent(g_thd_info->join_event);
+      GPR_ASSERT(ret);
+    } else {
+      gpr_free(g_thd_info);
+    }
+    return 0;
+  }
+
+  void destroy_thread() {
+    if (info_ != nullptr && info_->joinable) {
+      CloseHandle(info_->join_event);
+    }
+    gpr_free(info_);
+  }
+
+  gpr_mu mu_;
+  gpr_cv ready_;
+  bool started_;
+  thd_info* info_;
+};
+
+}  // namespace
+
+namespace grpc_core {
+
+Thread::Thread(const char* thd_name, void (*thd_body)(void* arg), void* arg,
+               bool* success, const Options& options)
+    : options_(options) {
+  bool outcome = false;
+  impl_ = new ThreadInternalsWindows(thd_body, arg, &outcome, options);
+  if (outcome) {
+    state_ = ALIVE;
+  } else {
+    state_ = FAILED;
+    delete impl_;
+    impl_ = nullptr;
+  }
+
+  if (success != nullptr) {
+    *success = outcome;
+  }
+}
+
+}  // namespace grpc_core
+
+gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)g_thd_info; }
+
+#endif /* GPR_WINDOWS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.cc
new file mode 100644
index 0000000..1712344
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.cc	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/http/format_request.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+
+static void fill_common_header(const grpc_httpcli_request* request,
+                               gpr_strvec* buf, bool connection_close) {
+  size_t i;
+  gpr_strvec_add(buf, gpr_strdup(request->http.path));
+  gpr_strvec_add(buf, gpr_strdup(" HTTP/1.0\r\n"));
+  /* just in case some crazy server really expects HTTP/1.1 */
+  gpr_strvec_add(buf, gpr_strdup("Host: "));
+  gpr_strvec_add(buf, gpr_strdup(request->host));
+  gpr_strvec_add(buf, gpr_strdup("\r\n"));
+  if (connection_close)
+    gpr_strvec_add(buf, gpr_strdup("Connection: close\r\n"));
+  gpr_strvec_add(buf,
+                 gpr_strdup("User-Agent: " GRPC_HTTPCLI_USER_AGENT "\r\n"));
+  /* user supplied headers */
+  for (i = 0; i < request->http.hdr_count; i++) {
+    gpr_strvec_add(buf, gpr_strdup(request->http.hdrs[i].key));
+    gpr_strvec_add(buf, gpr_strdup(": "));
+    gpr_strvec_add(buf, gpr_strdup(request->http.hdrs[i].value));
+    gpr_strvec_add(buf, gpr_strdup("\r\n"));
+  }
+}
+
+grpc_slice grpc_httpcli_format_get_request(
+    const grpc_httpcli_request* request) {
+  gpr_strvec out;
+  char* flat;
+  size_t flat_len;
+
+  gpr_strvec_init(&out);
+  gpr_strvec_add(&out, gpr_strdup("GET "));
+  fill_common_header(request, &out, true);
+  gpr_strvec_add(&out, gpr_strdup("\r\n"));
+
+  flat = gpr_strvec_flatten(&out, &flat_len);
+  gpr_strvec_destroy(&out);
+
+  return grpc_slice_new(flat, flat_len, gpr_free);
+}
+
+grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request* request,
+                                            const char* body_bytes,
+                                            size_t body_size) {
+  gpr_strvec out;
+  char* tmp;
+  size_t out_len;
+  size_t i;
+
+  gpr_strvec_init(&out);
+
+  gpr_strvec_add(&out, gpr_strdup("POST "));
+  fill_common_header(request, &out, true);
+  if (body_bytes) {
+    uint8_t has_content_type = 0;
+    for (i = 0; i < request->http.hdr_count; i++) {
+      if (strcmp(request->http.hdrs[i].key, "Content-Type") == 0) {
+        has_content_type = 1;
+        break;
+      }
+    }
+    if (!has_content_type) {
+      gpr_strvec_add(&out, gpr_strdup("Content-Type: text/plain\r\n"));
+    }
+    gpr_asprintf(&tmp, "Content-Length: %lu\r\n",
+                 static_cast<unsigned long>(body_size));
+    gpr_strvec_add(&out, tmp);
+  }
+  gpr_strvec_add(&out, gpr_strdup("\r\n"));
+  tmp = gpr_strvec_flatten(&out, &out_len);
+  gpr_strvec_destroy(&out);
+
+  if (body_bytes) {
+    tmp = static_cast<char*>(gpr_realloc(tmp, out_len + body_size));
+    memcpy(tmp + out_len, body_bytes, body_size);
+    out_len += body_size;
+  }
+
+  return grpc_slice_new(tmp, out_len, gpr_free);
+}
+
+grpc_slice grpc_httpcli_format_connect_request(
+    const grpc_httpcli_request* request) {
+  gpr_strvec out;
+  gpr_strvec_init(&out);
+  gpr_strvec_add(&out, gpr_strdup("CONNECT "));
+  fill_common_header(request, &out, false);
+  gpr_strvec_add(&out, gpr_strdup("\r\n"));
+  size_t flat_len;
+  char* flat = gpr_strvec_flatten(&out, &flat_len);
+  gpr_strvec_destroy(&out);
+  return grpc_slice_new(flat, flat_len, gpr_free);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.h
new file mode 100644
index 0000000..bcc332f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/format_request.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
+#define GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/http/httpcli.h"
+
+grpc_slice grpc_httpcli_format_get_request(const grpc_httpcli_request* request);
+grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request* request,
+                                            const char* body_bytes,
+                                            size_t body_size);
+grpc_slice grpc_httpcli_format_connect_request(
+    const grpc_httpcli_request* request);
+
+#endif /* GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.cc
new file mode 100644
index 0000000..7edcdcc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.cc	
@@ -0,0 +1,304 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/http/httpcli.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/http/format_request.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+typedef struct {
+  grpc_slice request_text;
+  grpc_http_parser parser;
+  grpc_resolved_addresses* addresses;
+  size_t next_address;
+  grpc_endpoint* ep;
+  char* host;
+  char* ssl_host_override;
+  grpc_millis deadline;
+  int have_read_byte;
+  const grpc_httpcli_handshaker* handshaker;
+  grpc_closure* on_done;
+  grpc_httpcli_context* context;
+  grpc_polling_entity* pollent;
+  grpc_iomgr_object iomgr_obj;
+  grpc_slice_buffer incoming;
+  grpc_slice_buffer outgoing;
+  grpc_closure on_read;
+  grpc_closure done_write;
+  grpc_closure connected;
+  grpc_error* overall_error;
+  grpc_resource_quota* resource_quota;
+} internal_request;
+
+static grpc_httpcli_get_override g_get_override = nullptr;
+static grpc_httpcli_post_override g_post_override = nullptr;
+
+static void plaintext_handshake(void* arg, grpc_endpoint* endpoint,
+                                const char* /*host*/, grpc_millis /*deadline*/,
+                                void (*on_done)(void* arg,
+                                                grpc_endpoint* endpoint)) {
+  on_done(arg, endpoint);
+}
+
+const grpc_httpcli_handshaker grpc_httpcli_plaintext = {"http",
+                                                        plaintext_handshake};
+
+void grpc_httpcli_context_init(grpc_httpcli_context* context) {
+  context->pollset_set = grpc_pollset_set_create();
+}
+
+void grpc_httpcli_context_destroy(grpc_httpcli_context* context) {
+  grpc_pollset_set_destroy(context->pollset_set);
+}
+
+static void next_address(internal_request* req, grpc_error* due_to_error);
+
+static void finish(internal_request* req, grpc_error* error) {
+  grpc_polling_entity_del_from_pollset_set(req->pollent,
+                                           req->context->pollset_set);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, req->on_done, error);
+  grpc_http_parser_destroy(&req->parser);
+  if (req->addresses != nullptr) {
+    grpc_resolved_addresses_destroy(req->addresses);
+  }
+  if (req->ep != nullptr) {
+    grpc_endpoint_destroy(req->ep);
+  }
+  grpc_slice_unref_internal(req->request_text);
+  gpr_free(req->host);
+  gpr_free(req->ssl_host_override);
+  grpc_iomgr_unregister_object(&req->iomgr_obj);
+  grpc_slice_buffer_destroy_internal(&req->incoming);
+  grpc_slice_buffer_destroy_internal(&req->outgoing);
+  GRPC_ERROR_UNREF(req->overall_error);
+  grpc_resource_quota_unref_internal(req->resource_quota);
+  gpr_free(req);
+}
+
+static void append_error(internal_request* req, grpc_error* error) {
+  if (req->overall_error == GRPC_ERROR_NONE) {
+    req->overall_error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed HTTP/1 client request");
+  }
+  grpc_resolved_address* addr = &req->addresses->addrs[req->next_address - 1];
+  grpc_core::UniquePtr<char> addr_text(grpc_sockaddr_to_uri(addr));
+  req->overall_error = grpc_error_add_child(
+      req->overall_error,
+      grpc_error_set_str(error, GRPC_ERROR_STR_TARGET_ADDRESS,
+                         grpc_slice_from_moved_string(std::move(addr_text))));
+}
+
+static void do_read(internal_request* req) {
+  grpc_endpoint_read(req->ep, &req->incoming, &req->on_read, /*urgent=*/true);
+}
+
+static void on_read(void* user_data, grpc_error* error) {
+  internal_request* req = static_cast<internal_request*>(user_data);
+  size_t i;
+
+  for (i = 0; i < req->incoming.count; i++) {
+    if (GRPC_SLICE_LENGTH(req->incoming.slices[i])) {
+      req->have_read_byte = 1;
+      grpc_error* err = grpc_http_parser_parse(
+          &req->parser, req->incoming.slices[i], nullptr);
+      if (err != GRPC_ERROR_NONE) {
+        finish(req, err);
+        return;
+      }
+    }
+  }
+
+  if (error == GRPC_ERROR_NONE) {
+    do_read(req);
+  } else if (!req->have_read_byte) {
+    next_address(req, GRPC_ERROR_REF(error));
+  } else {
+    finish(req, grpc_http_parser_eof(&req->parser));
+  }
+}
+
+static void on_written(internal_request* req) { do_read(req); }
+
+static void done_write(void* arg, grpc_error* error) {
+  internal_request* req = static_cast<internal_request*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    on_written(req);
+  } else {
+    next_address(req, GRPC_ERROR_REF(error));
+  }
+}
+
+static void start_write(internal_request* req) {
+  grpc_slice_ref_internal(req->request_text);
+  grpc_slice_buffer_add(&req->outgoing, req->request_text);
+  grpc_endpoint_write(req->ep, &req->outgoing, &req->done_write, nullptr);
+}
+
+static void on_handshake_done(void* arg, grpc_endpoint* ep) {
+  internal_request* req = static_cast<internal_request*>(arg);
+
+  if (!ep) {
+    next_address(req, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                          "Unexplained handshake failure"));
+    return;
+  }
+
+  req->ep = ep;
+  start_write(req);
+}
+
+static void on_connected(void* arg, grpc_error* error) {
+  internal_request* req = static_cast<internal_request*>(arg);
+
+  if (!req->ep) {
+    next_address(req, GRPC_ERROR_REF(error));
+    return;
+  }
+  req->handshaker->handshake(
+      req, req->ep, req->ssl_host_override ? req->ssl_host_override : req->host,
+      req->deadline, on_handshake_done);
+}
+
+static void next_address(internal_request* req, grpc_error* error) {
+  grpc_resolved_address* addr;
+  if (error != GRPC_ERROR_NONE) {
+    append_error(req, error);
+  }
+  if (req->next_address == req->addresses->naddrs) {
+    finish(req,
+           GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+               "Failed HTTP requests to all targets", &req->overall_error, 1));
+    return;
+  }
+  addr = &req->addresses->addrs[req->next_address++];
+  GRPC_CLOSURE_INIT(&req->connected, on_connected, req,
+                    grpc_schedule_on_exec_ctx);
+  grpc_arg arg = grpc_channel_arg_pointer_create(
+      (char*)GRPC_ARG_RESOURCE_QUOTA, req->resource_quota,
+      grpc_resource_quota_arg_vtable());
+  grpc_channel_args args = {1, &arg};
+  grpc_tcp_client_connect(&req->connected, &req->ep, req->context->pollset_set,
+                          &args, addr, req->deadline);
+}
+
+static void on_resolved(void* arg, grpc_error* error) {
+  internal_request* req = static_cast<internal_request*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    finish(req, GRPC_ERROR_REF(error));
+    return;
+  }
+  req->next_address = 0;
+  next_address(req, GRPC_ERROR_NONE);
+}
+
+static void internal_request_begin(grpc_httpcli_context* context,
+                                   grpc_polling_entity* pollent,
+                                   grpc_resource_quota* resource_quota,
+                                   const grpc_httpcli_request* request,
+                                   grpc_millis deadline, grpc_closure* on_done,
+                                   grpc_httpcli_response* response,
+                                   const char* name,
+                                   const grpc_slice& request_text) {
+  internal_request* req =
+      static_cast<internal_request*>(gpr_malloc(sizeof(internal_request)));
+  memset(req, 0, sizeof(*req));
+  req->request_text = request_text;
+  grpc_http_parser_init(&req->parser, GRPC_HTTP_RESPONSE, response);
+  req->on_done = on_done;
+  req->deadline = deadline;
+  req->handshaker =
+      request->handshaker ? request->handshaker : &grpc_httpcli_plaintext;
+  req->context = context;
+  req->pollent = pollent;
+  req->overall_error = GRPC_ERROR_NONE;
+  req->resource_quota = grpc_resource_quota_ref_internal(resource_quota);
+  GRPC_CLOSURE_INIT(&req->on_read, on_read, req, grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&req->done_write, done_write, req,
+                    grpc_schedule_on_exec_ctx);
+  grpc_slice_buffer_init(&req->incoming);
+  grpc_slice_buffer_init(&req->outgoing);
+  grpc_iomgr_register_object(&req->iomgr_obj, name);
+  req->host = gpr_strdup(request->host);
+  req->ssl_host_override = gpr_strdup(request->ssl_host_override);
+
+  GPR_ASSERT(pollent);
+  grpc_polling_entity_add_to_pollset_set(req->pollent,
+                                         req->context->pollset_set);
+  grpc_resolve_address(
+      request->host, req->handshaker->default_port, req->context->pollset_set,
+      GRPC_CLOSURE_CREATE(on_resolved, req, grpc_schedule_on_exec_ctx),
+      &req->addresses);
+}
+
+void grpc_httpcli_get(grpc_httpcli_context* context,
+                      grpc_polling_entity* pollent,
+                      grpc_resource_quota* resource_quota,
+                      const grpc_httpcli_request* request, grpc_millis deadline,
+                      grpc_closure* on_done, grpc_httpcli_response* response) {
+  char* name;
+  if (g_get_override && g_get_override(request, deadline, on_done, response)) {
+    return;
+  }
+  gpr_asprintf(&name, "HTTP:GET:%s:%s", request->host, request->http.path);
+  internal_request_begin(context, pollent, resource_quota, request, deadline,
+                         on_done, response, name,
+                         grpc_httpcli_format_get_request(request));
+  gpr_free(name);
+}
+
+void grpc_httpcli_post(grpc_httpcli_context* context,
+                       grpc_polling_entity* pollent,
+                       grpc_resource_quota* resource_quota,
+                       const grpc_httpcli_request* request,
+                       const char* body_bytes, size_t body_size,
+                       grpc_millis deadline, grpc_closure* on_done,
+                       grpc_httpcli_response* response) {
+  char* name;
+  if (g_post_override && g_post_override(request, body_bytes, body_size,
+                                         deadline, on_done, response)) {
+    return;
+  }
+  gpr_asprintf(&name, "HTTP:POST:%s:%s", request->host, request->http.path);
+  internal_request_begin(
+      context, pollent, resource_quota, request, deadline, on_done, response,
+      name, grpc_httpcli_format_post_request(request, body_bytes, body_size));
+  gpr_free(name);
+}
+
+void grpc_httpcli_set_override(grpc_httpcli_get_override get,
+                               grpc_httpcli_post_override post) {
+  g_get_override = get;
+  g_post_override = post;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.h
new file mode 100644
index 0000000..b073508
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_HTTPCLI_H
+#define GRPC_CORE_LIB_HTTP_HTTPCLI_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/time.h>
+
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+/* User agent this library reports */
+#define GRPC_HTTPCLI_USER_AGENT "grpc-httpcli/0.0"
+
+/* Tracks in-progress http requests
+   TODO(ctiller): allow caching and capturing multiple requests for the
+                  same content and combining them */
+typedef struct grpc_httpcli_context {
+  grpc_pollset_set* pollset_set;
+} grpc_httpcli_context;
+
+typedef struct {
+  const char* default_port;
+  void (*handshake)(void* arg, grpc_endpoint* endpoint, const char* host,
+                    grpc_millis deadline,
+                    void (*on_done)(void* arg, grpc_endpoint* endpoint));
+} grpc_httpcli_handshaker;
+
+extern const grpc_httpcli_handshaker grpc_httpcli_plaintext;
+extern const grpc_httpcli_handshaker grpc_httpcli_ssl;
+
+/* A request */
+typedef struct grpc_httpcli_request {
+  /* The host name to connect to */
+  char* host;
+  /* The host to verify in the SSL handshake (or NULL) */
+  char* ssl_host_override;
+  /* The main part of the request
+     The following headers are supplied automatically and MUST NOT be set here:
+     Host, Connection, User-Agent */
+  grpc_http_request http;
+  /* handshaker to use ssl for the request */
+  const grpc_httpcli_handshaker* handshaker;
+} grpc_httpcli_request;
+
+/* Expose the parser response type as a httpcli response too */
+typedef struct grpc_http_response grpc_httpcli_response;
+
+void grpc_httpcli_context_init(grpc_httpcli_context* context);
+void grpc_httpcli_context_destroy(grpc_httpcli_context* context);
+
+/* Asynchronously perform a HTTP GET.
+   'context' specifies the http context under which to do the get
+   'pollset' indicates a grpc_pollset that is interested in the result
+     of the get - work on this pollset may be used to progress the get
+     operation
+   'request' contains request parameters - these are caller owned and can be
+     destroyed once the call returns
+   'deadline' contains a deadline for the request (or gpr_inf_future)
+   'on_response' is a callback to report results to */
+void grpc_httpcli_get(grpc_httpcli_context* context,
+                      grpc_polling_entity* pollent,
+                      grpc_resource_quota* resource_quota,
+                      const grpc_httpcli_request* request, grpc_millis deadline,
+                      grpc_closure* on_complete,
+                      grpc_httpcli_response* response);
+
+/* Asynchronously perform a HTTP POST.
+   'context' specifies the http context under which to do the post
+   'pollset' indicates a grpc_pollset that is interested in the result
+     of the post - work on this pollset may be used to progress the post
+     operation
+   'request' contains request parameters - these are caller owned and can be
+     destroyed once the call returns
+   'body_bytes' and 'body_size' specify the payload for the post.
+     When there is no body, pass in NULL as body_bytes.
+   'deadline' contains a deadline for the request (or gpr_inf_future)
+   'em' points to a caller owned event manager that must be alive for the
+     lifetime of the request
+   'on_response' is a callback to report results to
+   Does not support ?var1=val1&var2=val2 in the path. */
+void grpc_httpcli_post(grpc_httpcli_context* context,
+                       grpc_polling_entity* pollent,
+                       grpc_resource_quota* resource_quota,
+                       const grpc_httpcli_request* request,
+                       const char* body_bytes, size_t body_size,
+                       grpc_millis deadline, grpc_closure* on_complete,
+                       grpc_httpcli_response* response);
+
+/* override functions return 1 if they handled the request, 0 otherwise */
+typedef int (*grpc_httpcli_get_override)(const grpc_httpcli_request* request,
+                                         grpc_millis deadline,
+                                         grpc_closure* on_complete,
+                                         grpc_httpcli_response* response);
+typedef int (*grpc_httpcli_post_override)(const grpc_httpcli_request* request,
+                                          const char* body_bytes,
+                                          size_t body_size,
+                                          grpc_millis deadline,
+                                          grpc_closure* on_complete,
+                                          grpc_httpcli_response* response);
+
+void grpc_httpcli_set_override(grpc_httpcli_get_override get,
+                               grpc_httpcli_post_override post);
+
+#endif /* GRPC_CORE_LIB_HTTP_HTTPCLI_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli_security_connector.cc
new file mode 100644
index 0000000..3d95cdf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/httpcli_security_connector.cc	
@@ -0,0 +1,214 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/http/httpcli.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/ssl_transport_security.h"
+
+class grpc_httpcli_ssl_channel_security_connector final
+    : public grpc_channel_security_connector {
+ public:
+  grpc_httpcli_ssl_channel_security_connector(char* secure_peer_name)
+      : grpc_channel_security_connector(
+            /*url_scheme=*/nullptr,
+            /*channel_creds=*/nullptr,
+            /*request_metadata_creds=*/nullptr),
+        secure_peer_name_(secure_peer_name) {}
+
+  ~grpc_httpcli_ssl_channel_security_connector() override {
+    if (handshaker_factory_ != nullptr) {
+      tsi_ssl_client_handshaker_factory_unref(handshaker_factory_);
+    }
+    if (secure_peer_name_ != nullptr) {
+      gpr_free(secure_peer_name_);
+    }
+  }
+
+  tsi_result InitHandshakerFactory(const char* pem_root_certs,
+                                   const tsi_ssl_root_certs_store* root_store) {
+    tsi_ssl_client_handshaker_options options;
+    options.pem_root_certs = pem_root_certs;
+    options.root_store = root_store;
+    return tsi_create_ssl_client_handshaker_factory_with_options(
+        &options, &handshaker_factory_);
+  }
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* /*interested_parties*/,
+                       grpc_core::HandshakeManager* handshake_mgr) override {
+    tsi_handshaker* handshaker = nullptr;
+    if (handshaker_factory_ != nullptr) {
+      tsi_result result = tsi_ssl_client_handshaker_factory_create_handshaker(
+          handshaker_factory_, secure_peer_name_, &handshaker);
+      if (result != TSI_OK) {
+        gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+                tsi_result_to_string(result));
+      }
+    }
+    handshake_mgr->Add(
+        grpc_core::SecurityHandshakerCreate(handshaker, this, args));
+  }
+
+  tsi_ssl_client_handshaker_factory* handshaker_factory() const {
+    return handshaker_factory_;
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* /*auth_context*/,
+                  grpc_closure* on_peer_checked) override {
+    grpc_error* error = GRPC_ERROR_NONE;
+
+    /* Check the peer name. */
+    if (secure_peer_name_ != nullptr &&
+        !tsi_ssl_peer_matches_name(&peer, secure_peer_name_)) {
+      char* msg;
+      gpr_asprintf(&msg, "Peer name %s is not in peer certificate",
+                   secure_peer_name_);
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+    }
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+    tsi_peer_destruct(&peer);
+  }
+
+  int cmp(const grpc_security_connector* other_sc) const override {
+    auto* other =
+        reinterpret_cast<const grpc_httpcli_ssl_channel_security_connector*>(
+            other_sc);
+    return strcmp(secure_peer_name_, other->secure_peer_name_);
+  }
+
+  bool check_call_host(grpc_core::StringView /*host*/,
+                       grpc_auth_context* /*auth_context*/,
+                       grpc_closure* /*on_call_host_checked*/,
+                       grpc_error** error) override {
+    *error = GRPC_ERROR_NONE;
+    return true;
+  }
+
+  void cancel_check_call_host(grpc_closure* /*on_call_host_checked*/,
+                              grpc_error* error) override {
+    GRPC_ERROR_UNREF(error);
+  }
+
+  const char* secure_peer_name() const { return secure_peer_name_; }
+
+ private:
+  tsi_ssl_client_handshaker_factory* handshaker_factory_ = nullptr;
+  char* secure_peer_name_;
+};
+
+static grpc_core::RefCountedPtr<grpc_channel_security_connector>
+httpcli_ssl_channel_security_connector_create(
+    const char* pem_root_certs, const tsi_ssl_root_certs_store* root_store,
+    const char* secure_peer_name, grpc_channel_args* /*channel_args*/) {
+  if (secure_peer_name != nullptr && pem_root_certs == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Cannot assert a secure peer name without a trust root.");
+    return nullptr;
+  }
+  grpc_core::RefCountedPtr<grpc_httpcli_ssl_channel_security_connector> c =
+      grpc_core::MakeRefCounted<grpc_httpcli_ssl_channel_security_connector>(
+          secure_peer_name == nullptr ? nullptr : gpr_strdup(secure_peer_name));
+  tsi_result result = c->InitHandshakerFactory(pem_root_certs, root_store);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+            tsi_result_to_string(result));
+    return nullptr;
+  }
+  return c;
+}
+
+/* handshaker */
+
+typedef struct {
+  void (*func)(void* arg, grpc_endpoint* endpoint);
+  void* arg;
+  grpc_core::RefCountedPtr<grpc_core::HandshakeManager> handshake_mgr;
+} on_done_closure;
+
+static void on_handshake_done(void* arg, grpc_error* error) {
+  auto* args = static_cast<grpc_core::HandshakerArgs*>(arg);
+  on_done_closure* c = static_cast<on_done_closure*>(args->user_data);
+  if (error != GRPC_ERROR_NONE) {
+    const char* msg = grpc_error_string(error);
+    gpr_log(GPR_ERROR, "Secure transport setup failed: %s", msg);
+
+    c->func(c->arg, nullptr);
+  } else {
+    grpc_channel_args_destroy(args->args);
+    grpc_slice_buffer_destroy_internal(args->read_buffer);
+    gpr_free(args->read_buffer);
+    c->func(c->arg, args->endpoint);
+  }
+  delete c;
+}
+
+static void ssl_handshake(void* arg, grpc_endpoint* tcp, const char* host,
+                          grpc_millis deadline,
+                          void (*on_done)(void* arg, grpc_endpoint* endpoint)) {
+  auto* c = new on_done_closure();
+  const char* pem_root_certs =
+      grpc_core::DefaultSslRootStore::GetPemRootCerts();
+  const tsi_ssl_root_certs_store* root_store =
+      grpc_core::DefaultSslRootStore::GetRootStore();
+  if (root_store == nullptr) {
+    gpr_log(GPR_ERROR, "Could not get default pem root certs.");
+    on_done(arg, nullptr);
+    gpr_free(c);
+    return;
+  }
+  c->func = on_done;
+  c->arg = arg;
+  grpc_core::RefCountedPtr<grpc_channel_security_connector> sc =
+      httpcli_ssl_channel_security_connector_create(
+          pem_root_certs, root_store, host,
+          static_cast<grpc_core::HandshakerArgs*>(arg)->args);
+
+  GPR_ASSERT(sc != nullptr);
+  grpc_arg channel_arg = grpc_security_connector_to_arg(sc.get());
+  grpc_channel_args args = {1, &channel_arg};
+  c->handshake_mgr = grpc_core::MakeRefCounted<grpc_core::HandshakeManager>();
+  grpc_core::HandshakerRegistry::AddHandshakers(
+      grpc_core::HANDSHAKER_CLIENT, &args, /*interested_parties=*/nullptr,
+      c->handshake_mgr.get());
+  c->handshake_mgr->DoHandshake(tcp, /*channel_args=*/nullptr, deadline,
+                                /*acceptor=*/nullptr, on_handshake_done,
+                                /*user_data=*/c);
+  sc.reset(DEBUG_LOCATION, "httpcli");
+}
+
+const grpc_httpcli_handshaker grpc_httpcli_ssl = {"https", ssl_handshake};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.cc
new file mode 100644
index 0000000..022ef9a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.cc	
@@ -0,0 +1,372 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/http/parser.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+grpc_core::TraceFlag grpc_http1_trace(false, "http1");
+
+static char* buf2str(void* buffer, size_t length) {
+  char* out = static_cast<char*>(gpr_malloc(length + 1));
+  memcpy(out, buffer, length);
+  out[length] = 0;
+  return out;
+}
+
+static grpc_error* handle_response_line(grpc_http_parser* parser) {
+  uint8_t* beg = parser->cur_line;
+  uint8_t* cur = beg;
+  uint8_t* end = beg + parser->cur_line_length;
+
+  if (cur == end || *cur++ != 'H')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'H'");
+  if (cur == end || *cur++ != 'T')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'T'");
+  if (cur == end || *cur++ != 'T')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'T'");
+  if (cur == end || *cur++ != 'P')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'P'");
+  if (cur == end || *cur++ != '/')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected '/'");
+  if (cur == end || *cur++ != '1')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected '1'");
+  if (cur == end || *cur++ != '.')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected '.'");
+  if (cur == end || *cur < '0' || *cur++ > '1') {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Expected HTTP/1.0 or HTTP/1.1");
+  }
+  if (cur == end || *cur++ != ' ')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected ' '");
+  if (cur == end || *cur < '1' || *cur++ > '9')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected status code");
+  if (cur == end || *cur < '0' || *cur++ > '9')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected status code");
+  if (cur == end || *cur < '0' || *cur++ > '9')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected status code");
+  parser->http.response->status =
+      (cur[-3] - '0') * 100 + (cur[-2] - '0') * 10 + (cur[-1] - '0');
+  if (cur == end || *cur++ != ' ')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected ' '");
+
+  /* we don't really care about the status code message */
+
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* handle_request_line(grpc_http_parser* parser) {
+  uint8_t* beg = parser->cur_line;
+  uint8_t* cur = beg;
+  uint8_t* end = beg + parser->cur_line_length;
+  uint8_t vers_major = 0;
+  uint8_t vers_minor = 0;
+
+  while (cur != end && *cur++ != ' ')
+    ;
+  if (cur == end)
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "No method on HTTP request line");
+  parser->http.request->method =
+      buf2str(beg, static_cast<size_t>(cur - beg - 1));
+
+  beg = cur;
+  while (cur != end && *cur++ != ' ')
+    ;
+  if (cur == end)
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("No path on HTTP request line");
+  parser->http.request->path = buf2str(beg, static_cast<size_t>(cur - beg - 1));
+
+  if (cur == end || *cur++ != 'H')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'H'");
+  if (cur == end || *cur++ != 'T')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'T'");
+  if (cur == end || *cur++ != 'T')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'T'");
+  if (cur == end || *cur++ != 'P')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected 'P'");
+  if (cur == end || *cur++ != '/')
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Expected '/'");
+  vers_major = static_cast<uint8_t>(*cur++ - '1' + 1);
+  ++cur;
+  if (cur == end)
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "End of line in HTTP version string");
+  vers_minor = static_cast<uint8_t>(*cur++ - '1' + 1);
+
+  if (vers_major == 1) {
+    if (vers_minor == 0) {
+      parser->http.request->version = GRPC_HTTP_HTTP10;
+    } else if (vers_minor == 1) {
+      parser->http.request->version = GRPC_HTTP_HTTP11;
+    } else {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
+    }
+  } else if (vers_major == 2) {
+    if (vers_minor == 0) {
+      parser->http.request->version = GRPC_HTTP_HTTP20;
+    } else {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
+    }
+  } else {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Expected one of HTTP/1.0, HTTP/1.1, or HTTP/2.0");
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* handle_first_line(grpc_http_parser* parser) {
+  switch (parser->type) {
+    case GRPC_HTTP_REQUEST:
+      return handle_request_line(parser);
+    case GRPC_HTTP_RESPONSE:
+      return handle_response_line(parser);
+  }
+  GPR_UNREACHABLE_CODE(
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Should never reach here"));
+}
+
+static grpc_error* add_header(grpc_http_parser* parser) {
+  uint8_t* beg = parser->cur_line;
+  uint8_t* cur = beg;
+  uint8_t* end = beg + parser->cur_line_length;
+  size_t* hdr_count = nullptr;
+  grpc_http_header** hdrs = nullptr;
+  grpc_http_header hdr = {nullptr, nullptr};
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  GPR_ASSERT(cur != end);
+
+  if (*cur == ' ' || *cur == '\t') {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Continued header lines not supported yet");
+    goto done;
+  }
+
+  while (cur != end && *cur != ':') {
+    cur++;
+  }
+  if (cur == end) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Didn't find ':' in header string");
+    goto done;
+  }
+  GPR_ASSERT(cur >= beg);
+  hdr.key = buf2str(beg, static_cast<size_t>(cur - beg));
+  cur++; /* skip : */
+
+  while (cur != end && (*cur == ' ' || *cur == '\t')) {
+    cur++;
+  }
+  GPR_ASSERT((size_t)(end - cur) >= parser->cur_line_end_length);
+  hdr.value = buf2str(
+      cur, static_cast<size_t>(end - cur) - parser->cur_line_end_length);
+
+  switch (parser->type) {
+    case GRPC_HTTP_RESPONSE:
+      hdr_count = &parser->http.response->hdr_count;
+      hdrs = &parser->http.response->hdrs;
+      break;
+    case GRPC_HTTP_REQUEST:
+      hdr_count = &parser->http.request->hdr_count;
+      hdrs = &parser->http.request->hdrs;
+      break;
+  }
+
+  if (*hdr_count == parser->hdr_capacity) {
+    parser->hdr_capacity =
+        GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2);
+    *hdrs = static_cast<grpc_http_header*>(
+        gpr_realloc(*hdrs, parser->hdr_capacity * sizeof(**hdrs)));
+  }
+  (*hdrs)[(*hdr_count)++] = hdr;
+
+done:
+  if (error != GRPC_ERROR_NONE) {
+    gpr_free(hdr.key);
+    gpr_free(hdr.value);
+  }
+  return error;
+}
+
+static grpc_error* finish_line(grpc_http_parser* parser,
+                               bool* found_body_start) {
+  grpc_error* err;
+  switch (parser->state) {
+    case GRPC_HTTP_FIRST_LINE:
+      err = handle_first_line(parser);
+      if (err != GRPC_ERROR_NONE) return err;
+      parser->state = GRPC_HTTP_HEADERS;
+      break;
+    case GRPC_HTTP_HEADERS:
+      if (parser->cur_line_length == parser->cur_line_end_length) {
+        parser->state = GRPC_HTTP_BODY;
+        *found_body_start = true;
+        break;
+      }
+      err = add_header(parser);
+      if (err != GRPC_ERROR_NONE) {
+        return err;
+      }
+      break;
+    case GRPC_HTTP_BODY:
+      GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Should never reach here"));
+  }
+
+  parser->cur_line_length = 0;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* addbyte_body(grpc_http_parser* parser, uint8_t byte) {
+  size_t* body_length = nullptr;
+  char** body = nullptr;
+
+  if (parser->type == GRPC_HTTP_RESPONSE) {
+    body_length = &parser->http.response->body_length;
+    body = &parser->http.response->body;
+  } else if (parser->type == GRPC_HTTP_REQUEST) {
+    body_length = &parser->http.request->body_length;
+    body = &parser->http.request->body;
+  } else {
+    GPR_UNREACHABLE_CODE(
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Should never reach here"));
+  }
+
+  if (*body_length == parser->body_capacity) {
+    parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
+    *body =
+        static_cast<char*>(gpr_realloc((void*)*body, parser->body_capacity));
+  }
+  (*body)[*body_length] = static_cast<char>(byte);
+  (*body_length)++;
+
+  return GRPC_ERROR_NONE;
+}
+
+static bool check_line(grpc_http_parser* parser) {
+  if (parser->cur_line_length >= 2 &&
+      parser->cur_line[parser->cur_line_length - 2] == '\r' &&
+      parser->cur_line[parser->cur_line_length - 1] == '\n') {
+    return true;
+  }
+
+  // HTTP request with \n\r line termiantors.
+  else if (parser->cur_line_length >= 2 &&
+           parser->cur_line[parser->cur_line_length - 2] == '\n' &&
+           parser->cur_line[parser->cur_line_length - 1] == '\r') {
+    return true;
+  }
+
+  // HTTP request with only \n line terminators.
+  else if (parser->cur_line_length >= 1 &&
+           parser->cur_line[parser->cur_line_length - 1] == '\n') {
+    parser->cur_line_end_length = 1;
+    return true;
+  }
+
+  return false;
+}
+
+static grpc_error* addbyte(grpc_http_parser* parser, uint8_t byte,
+                           bool* found_body_start) {
+  switch (parser->state) {
+    case GRPC_HTTP_FIRST_LINE:
+    case GRPC_HTTP_HEADERS:
+      if (parser->cur_line_length >= GRPC_HTTP_PARSER_MAX_HEADER_LENGTH) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_http1_trace))
+          gpr_log(GPR_ERROR, "HTTP header max line length (%d) exceeded",
+                  GRPC_HTTP_PARSER_MAX_HEADER_LENGTH);
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "HTTP header max line length exceeded");
+      }
+      parser->cur_line[parser->cur_line_length] = byte;
+      parser->cur_line_length++;
+      if (check_line(parser)) {
+        return finish_line(parser, found_body_start);
+      }
+      return GRPC_ERROR_NONE;
+    case GRPC_HTTP_BODY:
+      return addbyte_body(parser, byte);
+  }
+  GPR_UNREACHABLE_CODE(return GRPC_ERROR_NONE);
+}
+
+void grpc_http_parser_init(grpc_http_parser* parser, grpc_http_type type,
+                           void* request_or_response) {
+  memset(parser, 0, sizeof(*parser));
+  parser->state = GRPC_HTTP_FIRST_LINE;
+  parser->type = type;
+  parser->http.request_or_response = request_or_response;
+  parser->cur_line_end_length = 2;
+}
+
+void grpc_http_parser_destroy(grpc_http_parser* /*parser*/) {}
+
+void grpc_http_request_destroy(grpc_http_request* request) {
+  size_t i;
+  gpr_free(request->body);
+  for (i = 0; i < request->hdr_count; i++) {
+    gpr_free(request->hdrs[i].key);
+    gpr_free(request->hdrs[i].value);
+  }
+  gpr_free(request->hdrs);
+  gpr_free(request->method);
+  gpr_free(request->path);
+}
+
+void grpc_http_response_destroy(grpc_http_response* response) {
+  size_t i;
+  gpr_free(response->body);
+  for (i = 0; i < response->hdr_count; i++) {
+    gpr_free(response->hdrs[i].key);
+    gpr_free(response->hdrs[i].value);
+  }
+  gpr_free(response->hdrs);
+}
+
+grpc_error* grpc_http_parser_parse(grpc_http_parser* parser,
+                                   const grpc_slice& slice,
+                                   size_t* start_of_body) {
+  for (size_t i = 0; i < GRPC_SLICE_LENGTH(slice); i++) {
+    bool found_body_start = false;
+    grpc_error* err =
+        addbyte(parser, GRPC_SLICE_START_PTR(slice)[i], &found_body_start);
+    if (err != GRPC_ERROR_NONE) return err;
+    if (found_body_start && start_of_body != nullptr) *start_of_body = i + 1;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_http_parser_eof(grpc_http_parser* parser) {
+  if (parser->state != GRPC_HTTP_BODY) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Did not finish headers");
+  }
+  return GRPC_ERROR_NONE;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.h
new file mode 100644
index 0000000..b51fd5a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/http/parser.h	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_PARSER_H
+#define GRPC_CORE_LIB_HTTP_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/error.h"
+
+/* Maximum length of a header string of the form 'Key: Value\r\n' */
+#define GRPC_HTTP_PARSER_MAX_HEADER_LENGTH 4096
+
+/* A single header to be passed in a request */
+typedef struct grpc_http_header {
+  char* key;
+  char* value;
+} grpc_http_header;
+
+typedef enum {
+  GRPC_HTTP_FIRST_LINE,
+  GRPC_HTTP_HEADERS,
+  GRPC_HTTP_BODY
+} grpc_http_parser_state;
+
+typedef enum {
+  GRPC_HTTP_HTTP10,
+  GRPC_HTTP_HTTP11,
+  GRPC_HTTP_HTTP20,
+} grpc_http_version;
+
+typedef enum {
+  GRPC_HTTP_RESPONSE,
+  GRPC_HTTP_REQUEST,
+} grpc_http_type;
+
+/* A request */
+typedef struct grpc_http_request {
+  /* Method of the request (e.g. GET, POST) */
+  char* method;
+  /* The path of the resource to fetch */
+  char* path;
+  /* HTTP version to use */
+  grpc_http_version version;
+  /* Headers attached to the request */
+  size_t hdr_count;
+  grpc_http_header* hdrs;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length;
+  char* body;
+} grpc_http_request;
+
+/* A response */
+typedef struct grpc_http_response {
+  /* HTTP status code */
+  int status = 0;
+  /* Headers: count and key/values */
+  size_t hdr_count = 0;
+  grpc_http_header* hdrs = nullptr;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length = 0;
+  char* body = nullptr;
+} grpc_http_response;
+
+typedef struct {
+  grpc_http_parser_state state;
+  grpc_http_type type;
+
+  union {
+    grpc_http_response* response;
+    grpc_http_request* request;
+    void* request_or_response;
+  } http;
+  size_t body_capacity;
+  size_t hdr_capacity;
+
+  uint8_t cur_line[GRPC_HTTP_PARSER_MAX_HEADER_LENGTH];
+  size_t cur_line_length;
+  size_t cur_line_end_length;
+} grpc_http_parser;
+
+void grpc_http_parser_init(grpc_http_parser* parser, grpc_http_type type,
+                           void* request_or_response);
+void grpc_http_parser_destroy(grpc_http_parser* parser);
+
+/* Sets \a start_of_body to the offset in \a slice of the start of the body. */
+grpc_error* grpc_http_parser_parse(grpc_http_parser* parser,
+                                   const grpc_slice& slice,
+                                   size_t* start_of_body);
+grpc_error* grpc_http_parser_eof(grpc_http_parser* parser);
+
+void grpc_http_request_destroy(grpc_http_request* request);
+void grpc_http_response_destroy(grpc_http_response* response);
+
+extern grpc_core::TraceFlag grpc_http1_trace;
+
+#endif /* GRPC_CORE_LIB_HTTP_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/block_annotate.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/block_annotate.h
new file mode 100644
index 0000000..a57873a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/block_annotate.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H
+#define GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H
+
+void gpr_thd_start_blocking_region();
+void gpr_thd_end_blocking_region();
+
+/* These annotations identify the beginning and end of regions where
+   the code may block for reasons other than synchronization functions.
+   These include poll, epoll, and getaddrinfo. */
+
+#ifdef GRPC_SCHEDULING_MARK_BLOCKING_REGION
+#define GRPC_SCHEDULING_START_BLOCKING_REGION \
+  do {                                        \
+    gpr_thd_start_blocking_region();          \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION     \
+  do {                                          \
+    gpr_thd_end_blocking_region();              \
+    grpc_core::ExecCtx::Get()->InvalidateNow(); \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION_NO_EXEC_CTX \
+  do {                                                  \
+    gpr_thd_end_blocking_region();                      \
+  } while (0)
+
+#else
+#define GRPC_SCHEDULING_START_BLOCKING_REGION \
+  do {                                        \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION     \
+  do {                                          \
+    grpc_core::ExecCtx::Get()->InvalidateNow(); \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION_NO_EXEC_CTX \
+  do {                                                  \
+  } while (0)
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_BLOCK_ANNOTATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.cc
new file mode 100644
index 0000000..e1b87da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.cc	
@@ -0,0 +1,308 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/buffer_list.h"
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/log.h>
+
+#ifdef GRPC_LINUX_ERRQUEUE
+#include <netinet/in.h>
+#include <string.h>
+#include <time.h>
+
+#include "src/core/lib/gprpp/memory.h"
+
+namespace grpc_core {
+namespace {
+/** Fills gpr_timespec gts based on values from timespec ts */
+void fill_gpr_from_timestamp(gpr_timespec* gts, const struct timespec* ts) {
+  gts->tv_sec = ts->tv_sec;
+  gts->tv_nsec = static_cast<int32_t>(ts->tv_nsec);
+  gts->clock_type = GPR_CLOCK_REALTIME;
+}
+
+void default_timestamps_callback(void* /*arg*/, grpc_core::Timestamps* /*ts*/,
+                                 grpc_error* /*shudown_err*/) {
+  gpr_log(GPR_DEBUG, "Timestamps callback has not been registered");
+}
+
+/** The saved callback function that will be invoked when we get all the
+ * timestamps that we are going to get for a TracedBuffer. */
+void (*timestamps_callback)(void*, grpc_core::Timestamps*,
+                            grpc_error* shutdown_err) =
+    default_timestamps_callback;
+
+/* Used to extract individual opt stats from cmsg, so as to avoid troubles with
+ * unaligned reads */
+template <typename T>
+T read_unaligned(const void* ptr) {
+  T val;
+  memcpy(&val, ptr, sizeof(val));
+  return val;
+}
+
+/* Extracts opt stats from the tcp_info struct \a info to \a metrics */
+void extract_opt_stats_from_tcp_info(ConnectionMetrics* metrics,
+                                     const grpc_core::tcp_info* info) {
+  if (info == nullptr) {
+    return;
+  }
+  if (info->length > offsetof(grpc_core::tcp_info, tcpi_sndbuf_limited)) {
+    metrics->recurring_retrans.emplace(info->tcpi_retransmits);
+    metrics->is_delivery_rate_app_limited.emplace(
+        info->tcpi_delivery_rate_app_limited);
+    metrics->congestion_window.emplace(info->tcpi_snd_cwnd);
+    metrics->reordering.emplace(info->tcpi_reordering);
+    metrics->packet_retx.emplace(info->tcpi_total_retrans);
+    metrics->pacing_rate.emplace(info->tcpi_pacing_rate);
+    metrics->data_notsent.emplace(info->tcpi_notsent_bytes);
+    if (info->tcpi_min_rtt != UINT32_MAX) {
+      metrics->min_rtt.emplace(info->tcpi_min_rtt);
+    }
+    metrics->packet_sent.emplace(info->tcpi_data_segs_out);
+    metrics->delivery_rate.emplace(info->tcpi_delivery_rate);
+    metrics->busy_usec.emplace(info->tcpi_busy_time);
+    metrics->rwnd_limited_usec.emplace(info->tcpi_rwnd_limited);
+    metrics->sndbuf_limited_usec.emplace(info->tcpi_sndbuf_limited);
+  }
+  if (info->length > offsetof(grpc_core::tcp_info, tcpi_dsack_dups)) {
+    metrics->data_sent.emplace(info->tcpi_bytes_sent);
+    metrics->data_retx.emplace(info->tcpi_bytes_retrans);
+    metrics->packet_spurious_retx.emplace(info->tcpi_dsack_dups);
+  }
+}
+
+/** Extracts opt stats from the given control message \a opt_stats to the
+ * connection metrics \a metrics */
+void extract_opt_stats_from_cmsg(ConnectionMetrics* metrics,
+                                 const cmsghdr* opt_stats) {
+  if (opt_stats == nullptr) {
+    return;
+  }
+  const auto* data = CMSG_DATA(opt_stats);
+  constexpr int64_t cmsg_hdr_len = CMSG_ALIGN(sizeof(struct cmsghdr));
+  const int64_t len = opt_stats->cmsg_len - cmsg_hdr_len;
+  int64_t offset = 0;
+
+  while (offset < len) {
+    const auto* attr = reinterpret_cast<const nlattr*>(data + offset);
+    const void* val = data + offset + NLA_HDRLEN;
+    switch (attr->nla_type) {
+      case TCP_NLA_BUSY: {
+        metrics->busy_usec.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_RWND_LIMITED: {
+        metrics->rwnd_limited_usec.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_SNDBUF_LIMITED: {
+        metrics->sndbuf_limited_usec.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_PACING_RATE: {
+        metrics->pacing_rate.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_DELIVERY_RATE: {
+        metrics->delivery_rate.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_DELIVERY_RATE_APP_LMT: {
+        metrics->is_delivery_rate_app_limited.emplace(
+            read_unaligned<uint8_t>(val));
+        break;
+      }
+      case TCP_NLA_SND_CWND: {
+        metrics->congestion_window.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_MIN_RTT: {
+        metrics->min_rtt.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_SRTT: {
+        metrics->srtt.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_RECUR_RETRANS: {
+        metrics->recurring_retrans.emplace(read_unaligned<uint8_t>(val));
+        break;
+      }
+      case TCP_NLA_BYTES_SENT: {
+        metrics->data_sent.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_DATA_SEGS_OUT: {
+        metrics->packet_sent.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_TOTAL_RETRANS: {
+        metrics->packet_retx.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_DELIVERED: {
+        metrics->packet_delivered.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_DELIVERED_CE: {
+        metrics->packet_delivered_ce.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_BYTES_RETRANS: {
+        metrics->data_retx.emplace(read_unaligned<uint64_t>(val));
+        break;
+      }
+      case TCP_NLA_DSACK_DUPS: {
+        metrics->packet_spurious_retx.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_REORDERING: {
+        metrics->reordering.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+      case TCP_NLA_SND_SSTHRESH: {
+        metrics->snd_ssthresh.emplace(read_unaligned<uint32_t>(val));
+        break;
+      }
+    }
+    offset += NLA_ALIGN(attr->nla_len);
+  }
+}
+
+static int get_socket_tcp_info(grpc_core::tcp_info* info, int fd) {
+  memset(info, 0, sizeof(*info));
+  info->length = sizeof(*info) - sizeof(socklen_t);
+  return getsockopt(fd, IPPROTO_TCP, TCP_INFO, info, &(info->length));
+}
+} /* namespace */
+
+void TracedBuffer::AddNewEntry(TracedBuffer** head, uint32_t seq_no, int fd,
+                               void* arg) {
+  GPR_DEBUG_ASSERT(head != nullptr);
+  TracedBuffer* new_elem = new TracedBuffer(seq_no, arg);
+  /* Store the current time as the sendmsg time. */
+  new_elem->ts_.sendmsg_time.time = gpr_now(GPR_CLOCK_REALTIME);
+  new_elem->ts_.scheduled_time.time = gpr_inf_past(GPR_CLOCK_REALTIME);
+  new_elem->ts_.sent_time.time = gpr_inf_past(GPR_CLOCK_REALTIME);
+  new_elem->ts_.acked_time.time = gpr_inf_past(GPR_CLOCK_REALTIME);
+
+  if (get_socket_tcp_info(&new_elem->ts_.info, fd) == 0) {
+    extract_opt_stats_from_tcp_info(&new_elem->ts_.sendmsg_time.metrics,
+                                    &new_elem->ts_.info);
+  }
+  if (*head == nullptr) {
+    *head = new_elem;
+    return;
+  }
+  /* Append at the end. */
+  TracedBuffer* ptr = *head;
+  while (ptr->next_ != nullptr) {
+    ptr = ptr->next_;
+  }
+  ptr->next_ = new_elem;
+}
+
+void TracedBuffer::ProcessTimestamp(TracedBuffer** head,
+                                    struct sock_extended_err* serr,
+                                    struct cmsghdr* opt_stats,
+                                    struct scm_timestamping* tss) {
+  GPR_DEBUG_ASSERT(head != nullptr);
+  TracedBuffer* elem = *head;
+  TracedBuffer* next = nullptr;
+  while (elem != nullptr) {
+    /* The byte number refers to the sequence number of the last byte which this
+     * timestamp relates to. */
+    if (serr->ee_data >= elem->seq_no_) {
+      switch (serr->ee_info) {
+        case SCM_TSTAMP_SCHED:
+          fill_gpr_from_timestamp(&(elem->ts_.scheduled_time.time),
+                                  &(tss->ts[0]));
+          extract_opt_stats_from_cmsg(&(elem->ts_.scheduled_time.metrics),
+                                      opt_stats);
+          elem = elem->next_;
+          break;
+        case SCM_TSTAMP_SND:
+          fill_gpr_from_timestamp(&(elem->ts_.sent_time.time), &(tss->ts[0]));
+          extract_opt_stats_from_cmsg(&(elem->ts_.sent_time.metrics),
+                                      opt_stats);
+          elem = elem->next_;
+          break;
+        case SCM_TSTAMP_ACK:
+          fill_gpr_from_timestamp(&(elem->ts_.acked_time.time), &(tss->ts[0]));
+          extract_opt_stats_from_cmsg(&(elem->ts_.acked_time.metrics),
+                                      opt_stats);
+          /* Got all timestamps. Do the callback and free this TracedBuffer.
+           * The thing below can be passed by value if we don't want the
+           * restriction on the lifetime. */
+          timestamps_callback(elem->arg_, &(elem->ts_), GRPC_ERROR_NONE);
+          next = elem->next_;
+          delete static_cast<TracedBuffer*>(elem);
+          *head = elem = next;
+          break;
+        default:
+          abort();
+      }
+    } else {
+      break;
+    }
+  }
+}
+
+void TracedBuffer::Shutdown(TracedBuffer** head, void* remaining,
+                            grpc_error* shutdown_err) {
+  GPR_DEBUG_ASSERT(head != nullptr);
+  TracedBuffer* elem = *head;
+  while (elem != nullptr) {
+    timestamps_callback(elem->arg_, &(elem->ts_), shutdown_err);
+    auto* next = elem->next_;
+    delete elem;
+    elem = next;
+  }
+  *head = nullptr;
+  if (remaining != nullptr) {
+    timestamps_callback(remaining, nullptr, shutdown_err);
+  }
+  GRPC_ERROR_UNREF(shutdown_err);
+}
+
+void grpc_tcp_set_write_timestamps_callback(void (*fn)(void*,
+                                                       grpc_core::Timestamps*,
+                                                       grpc_error* error)) {
+  timestamps_callback = fn;
+}
+} /* namespace grpc_core */
+
+#else /* GRPC_LINUX_ERRQUEUE */
+
+namespace grpc_core {
+void grpc_tcp_set_write_timestamps_callback(void (*fn)(void*,
+                                                       grpc_core::Timestamps*,
+                                                       grpc_error* error)) {
+  // Cast value of fn to void to avoid unused parameter warning.
+  // Can't comment out the name because some compilers and formatters don't
+  // like the sequence */* , which would arise from */*fn*/.
+  (void)fn;
+  gpr_log(GPR_DEBUG, "Timestamps callback is not enabled for this platform");
+}
+} /* namespace grpc_core */
+
+#endif /* GRPC_LINUX_ERRQUEUE */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.h
new file mode 100644
index 0000000..c2552ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/buffer_list.h	
@@ -0,0 +1,164 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H
+#define GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/optional.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/internal_errqueue.h"
+
+namespace grpc_core {
+
+struct ConnectionMetrics {
+  /* Delivery rate in Bytes/s. */
+  Optional<uint64_t> delivery_rate;
+  /* If the delivery rate is limited by the application, this is set to true. */
+  Optional<bool> is_delivery_rate_app_limited;
+  /* Total packets retransmitted. */
+  Optional<uint32_t> packet_retx;
+  /* Total packets retransmitted spuriously. This metric is smaller than or
+  equal to packet_retx. */
+  Optional<uint32_t> packet_spurious_retx;
+  /* Total packets sent. */
+  Optional<uint32_t> packet_sent;
+  /* Total packets delivered. */
+  Optional<uint32_t> packet_delivered;
+  /* Total packets delivered with ECE marked. This metric is smaller than or
+  equal to packet_delivered. */
+  Optional<uint32_t> packet_delivered_ce;
+  /* Total bytes lost so far. */
+  Optional<uint64_t> data_retx;
+  /* Total bytes sent so far. */
+  Optional<uint64_t> data_sent;
+  /* Total bytes in write queue but not sent. */
+  Optional<uint64_t> data_notsent;
+  /* Pacing rate of the connection in Bps */
+  Optional<uint64_t> pacing_rate;
+  /* Minimum RTT observed in usec. */
+  Optional<uint32_t> min_rtt;
+  /* Smoothed RTT in usec */
+  Optional<uint32_t> srtt;
+  /* Send congestion window. */
+  Optional<uint32_t> congestion_window;
+  /* Slow start threshold in packets. */
+  Optional<uint32_t> snd_ssthresh;
+  /* Maximum degree of reordering (i.e., maximum number of packets reodered)
+   on the connection. */
+  Optional<uint32_t> reordering;
+  /* Represents the number of recurring retransmissions of the first sequence
+  that is not acknowledged yet. */
+  Optional<uint8_t> recurring_retrans;
+  /* The cumulative time (in usec) that the transport protocol was busy
+   sending data. */
+  Optional<uint64_t> busy_usec;
+  /* The cumulative time (in usec) that the transport protocol was limited by
+   the receive window size. */
+  Optional<uint64_t> rwnd_limited_usec;
+  /* The cumulative time (in usec) that the transport protocol was limited by
+   the send buffer size. */
+  Optional<uint64_t> sndbuf_limited_usec;
+};
+
+struct Timestamp {
+  gpr_timespec time;
+  ConnectionMetrics metrics; /* Metrics collected with this timestamp */
+};
+
+struct Timestamps {
+  Timestamp sendmsg_time;
+  Timestamp scheduled_time;
+  Timestamp sent_time;
+  Timestamp acked_time;
+
+  uint32_t byte_offset; /* byte offset relative to the start of the RPC */
+
+#ifdef GRPC_LINUX_ERRQUEUE
+  grpc_core::tcp_info info; /* tcp_info collected on sendmsg */
+#endif                      /* GRPC_LINUX_ERRQUEUE */
+};
+
+/** TracedBuffer is a class to keep track of timestamps for a specific buffer in
+ * the TCP layer. We are only tracking timestamps for Linux kernels and hence
+ * this class would only be used by Linux platforms. For all other platforms,
+ * TracedBuffer would be an empty class.
+ *
+ * The timestamps collected are according to grpc_core::Timestamps declared
+ * above.
+ *
+ * A TracedBuffer list is kept track of using the head element of the list. If
+ * the head element of the list is nullptr, then the list is empty.
+ */
+#ifdef GRPC_LINUX_ERRQUEUE
+class TracedBuffer {
+ public:
+  /** Use AddNewEntry function instead of using this directly. */
+  TracedBuffer(uint32_t seq_no, void* arg)
+      : seq_no_(seq_no), arg_(arg), next_(nullptr) {}
+
+  /** Add a new entry in the TracedBuffer list pointed to by head. Also saves
+   * sendmsg_time with the current timestamp. */
+  static void AddNewEntry(grpc_core::TracedBuffer** head, uint32_t seq_no,
+                          int fd, void* arg);
+
+  /** Processes a received timestamp based on sock_extended_err and
+   * scm_timestamping structures. It will invoke the timestamps callback if the
+   * timestamp type is SCM_TSTAMP_ACK. */
+  static void ProcessTimestamp(grpc_core::TracedBuffer** head,
+                               struct sock_extended_err* serr,
+                               struct cmsghdr* opt_stats,
+                               struct scm_timestamping* tss);
+
+  /** Cleans the list by calling the callback for each traced buffer in the list
+   * with timestamps that it has. */
+  static void Shutdown(grpc_core::TracedBuffer** head, void* remaining,
+                       grpc_error* shutdown_err);
+
+ private:
+  uint32_t seq_no_; /* The sequence number for the last byte in the buffer */
+  void* arg_;       /* The arg to pass to timestamps_callback */
+  grpc_core::Timestamps ts_; /* The timestamps corresponding to this buffer */
+  grpc_core::TracedBuffer* next_; /* The next TracedBuffer in the list */
+};
+#else  /* GRPC_LINUX_ERRQUEUE */
+class TracedBuffer {
+ public:
+  /* Dummy shutdown function */
+  static void Shutdown(grpc_core::TracedBuffer** /*head*/, void* /*remaining*/,
+                       grpc_error* shutdown_err) {
+    GRPC_ERROR_UNREF(shutdown_err);
+  }
+};
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+/** Sets the callback function to call when timestamps for a write are
+ *  collected. The callback does not own a reference to error. */
+void grpc_tcp_set_write_timestamps_callback(void (*fn)(void*,
+                                                       grpc_core::Timestamps*,
+                                                       grpc_error* error));
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_BUFFER_LIST_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.cc
new file mode 100644
index 0000000..ed0ae17
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.cc	
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/call_combiner.h"
+
+#include <inttypes.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/profiling/timers.h"
+
+namespace grpc_core {
+
+DebugOnlyTraceFlag grpc_call_combiner_trace(false, "call_combiner");
+
+namespace {
+
+grpc_error* DecodeCancelStateError(gpr_atm cancel_state) {
+  if (cancel_state & 1) {
+    return (grpc_error*)(cancel_state & ~static_cast<gpr_atm>(1));
+  }
+  return GRPC_ERROR_NONE;
+}
+
+gpr_atm EncodeCancelStateError(grpc_error* error) {
+  return static_cast<gpr_atm>(1) | (gpr_atm)error;
+}
+
+}  // namespace
+
+CallCombiner::CallCombiner() {
+  gpr_atm_no_barrier_store(&cancel_state_, 0);
+  gpr_atm_no_barrier_store(&size_, 0);
+#ifdef GRPC_TSAN_ENABLED
+  GRPC_CLOSURE_INIT(&tsan_closure_, TsanClosure, this,
+                    grpc_schedule_on_exec_ctx);
+#endif
+}
+
+CallCombiner::~CallCombiner() {
+  GRPC_ERROR_UNREF(DecodeCancelStateError(cancel_state_));
+}
+
+#ifdef GRPC_TSAN_ENABLED
+void CallCombiner::TsanClosure(void* arg, grpc_error* error) {
+  CallCombiner* self = static_cast<CallCombiner*>(arg);
+  // We ref-count the lock, and check if it's already taken.
+  // If it was taken, we should do nothing. Otherwise, we will mark it as
+  // locked. Note that if two different threads try to do this, only one of
+  // them will be able to mark the lock as acquired, while they both run their
+  // callbacks. In such cases (which should never happen for call_combiner),
+  // TSAN will correctly produce an error.
+  //
+  // TODO(soheil): This only covers the callbacks scheduled by
+  //               CallCombiner::Start() and CallCombiner::Stop().
+  //               If in the future, a callback gets scheduled using other
+  //               mechanisms, we will need to add APIs to externally lock
+  //               call combiners.
+  RefCountedPtr<TsanLock> lock = self->tsan_lock_;
+  bool prev = false;
+  if (lock->taken.compare_exchange_strong(prev, true)) {
+    TSAN_ANNOTATE_RWLOCK_ACQUIRED(&lock->taken, true);
+  } else {
+    lock.reset();
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, self->original_closure_,
+                          GRPC_ERROR_REF(error));
+  if (lock != nullptr) {
+    TSAN_ANNOTATE_RWLOCK_RELEASED(&lock->taken, true);
+    bool prev = true;
+    GPR_ASSERT(lock->taken.compare_exchange_strong(prev, false));
+  }
+}
+#endif
+
+void CallCombiner::ScheduleClosure(grpc_closure* closure, grpc_error* error) {
+#ifdef GRPC_TSAN_ENABLED
+  original_closure_ = closure;
+  ExecCtx::Run(DEBUG_LOCATION, &tsan_closure_, error);
+#else
+  ExecCtx::Run(DEBUG_LOCATION, closure, error);
+#endif
+}
+
+#ifndef NDEBUG
+#define DEBUG_ARGS const char *file, int line,
+#define DEBUG_FMT_STR "%s:%d: "
+#define DEBUG_FMT_ARGS , file, line
+#else
+#define DEBUG_ARGS
+#define DEBUG_FMT_STR
+#define DEBUG_FMT_ARGS
+#endif
+
+void CallCombiner::Start(grpc_closure* closure, grpc_error* error,
+                         DEBUG_ARGS const char* reason) {
+  GPR_TIMER_SCOPE("CallCombiner::Start", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+    gpr_log(GPR_INFO,
+            "==> CallCombiner::Start() [%p] closure=%p [" DEBUG_FMT_STR
+            "%s] error=%s",
+            this, closure DEBUG_FMT_ARGS, reason, grpc_error_string(error));
+  }
+  size_t prev_size =
+      static_cast<size_t>(gpr_atm_full_fetch_add(&size_, (gpr_atm)1));
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+    gpr_log(GPR_INFO, "  size: %" PRIdPTR " -> %" PRIdPTR, prev_size,
+            prev_size + 1);
+  }
+  GRPC_STATS_INC_CALL_COMBINER_LOCKS_SCHEDULED_ITEMS();
+  if (prev_size == 0) {
+    GRPC_STATS_INC_CALL_COMBINER_LOCKS_INITIATED();
+    GPR_TIMER_MARK("call_combiner_initiate", 0);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+      gpr_log(GPR_INFO, "  EXECUTING IMMEDIATELY");
+    }
+    // Queue was empty, so execute this closure immediately.
+    ScheduleClosure(closure, error);
+  } else {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+      gpr_log(GPR_INFO, "  QUEUING");
+    }
+    // Queue was not empty, so add closure to queue.
+    closure->error_data.error = error;
+    queue_.Push(
+        reinterpret_cast<MultiProducerSingleConsumerQueue::Node*>(closure));
+  }
+}
+
+void CallCombiner::Stop(DEBUG_ARGS const char* reason) {
+  GPR_TIMER_SCOPE("CallCombiner::Stop", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+    gpr_log(GPR_INFO, "==> CallCombiner::Stop() [%p] [" DEBUG_FMT_STR "%s]",
+            this DEBUG_FMT_ARGS, reason);
+  }
+  size_t prev_size =
+      static_cast<size_t>(gpr_atm_full_fetch_add(&size_, (gpr_atm)-1));
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+    gpr_log(GPR_INFO, "  size: %" PRIdPTR " -> %" PRIdPTR, prev_size,
+            prev_size - 1);
+  }
+  GPR_ASSERT(prev_size >= 1);
+  if (prev_size > 1) {
+    while (true) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+        gpr_log(GPR_INFO, "  checking queue");
+      }
+      bool empty;
+      grpc_closure* closure =
+          reinterpret_cast<grpc_closure*>(queue_.PopAndCheckEnd(&empty));
+      if (closure == nullptr) {
+        // This can happen either due to a race condition within the mpscq
+        // code or because of a race with Start().
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+          gpr_log(GPR_INFO, "  queue returned no result; checking again");
+        }
+        continue;
+      }
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+        gpr_log(GPR_INFO, "  EXECUTING FROM QUEUE: closure=%p error=%s",
+                closure, grpc_error_string(closure->error_data.error));
+      }
+      ScheduleClosure(closure, closure->error_data.error);
+      break;
+    }
+  } else if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+    gpr_log(GPR_INFO, "  queue empty");
+  }
+}
+
+void CallCombiner::SetNotifyOnCancel(grpc_closure* closure) {
+  GRPC_STATS_INC_CALL_COMBINER_SET_NOTIFY_ON_CANCEL();
+  while (true) {
+    // Decode original state.
+    gpr_atm original_state = gpr_atm_acq_load(&cancel_state_);
+    grpc_error* original_error = DecodeCancelStateError(original_state);
+    // If error is set, invoke the cancellation closure immediately.
+    // Otherwise, store the new closure.
+    if (original_error != GRPC_ERROR_NONE) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+        gpr_log(GPR_INFO,
+                "call_combiner=%p: scheduling notify_on_cancel callback=%p "
+                "for pre-existing cancellation",
+                this, closure);
+      }
+      ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_REF(original_error));
+      break;
+    } else {
+      if (gpr_atm_full_cas(&cancel_state_, original_state, (gpr_atm)closure)) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+          gpr_log(GPR_INFO, "call_combiner=%p: setting notify_on_cancel=%p",
+                  this, closure);
+        }
+        // If we replaced an earlier closure, invoke the original
+        // closure with GRPC_ERROR_NONE.  This allows callers to clean
+        // up any resources they may be holding for the callback.
+        if (original_state != 0) {
+          closure = (grpc_closure*)original_state;
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+            gpr_log(GPR_INFO,
+                    "call_combiner=%p: scheduling old cancel callback=%p", this,
+                    closure);
+          }
+          ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+        }
+        break;
+      }
+    }
+    // cas failed, try again.
+  }
+}
+
+void CallCombiner::Cancel(grpc_error* error) {
+  GRPC_STATS_INC_CALL_COMBINER_CANCELLED();
+  while (true) {
+    gpr_atm original_state = gpr_atm_acq_load(&cancel_state_);
+    grpc_error* original_error = DecodeCancelStateError(original_state);
+    if (original_error != GRPC_ERROR_NONE) {
+      GRPC_ERROR_UNREF(error);
+      break;
+    }
+    if (gpr_atm_full_cas(&cancel_state_, original_state,
+                         EncodeCancelStateError(error))) {
+      if (original_state != 0) {
+        grpc_closure* notify_on_cancel = (grpc_closure*)original_state;
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+          gpr_log(GPR_INFO,
+                  "call_combiner=%p: scheduling notify_on_cancel callback=%p",
+                  this, notify_on_cancel);
+        }
+        ExecCtx::Run(DEBUG_LOCATION, notify_on_cancel, GRPC_ERROR_REF(error));
+      }
+      break;
+    }
+    // cas failed, try again.
+  }
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.h
new file mode 100644
index 0000000..d3f43cf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/call_combiner.h	
@@ -0,0 +1,216 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+#define GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/dynamic_annotations.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+// A simple, lock-free mechanism for serializing activity related to a
+// single call.  This is similar to a combiner but is more lightweight.
+//
+// It requires the callback (or, in the common case where the callback
+// actually kicks off a chain of callbacks, the last callback in that
+// chain) to explicitly indicate (by calling GRPC_CALL_COMBINER_STOP())
+// when it is done with the action that was kicked off by the original
+// callback.
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_call_combiner_trace;
+
+class CallCombiner {
+ public:
+  CallCombiner();
+  ~CallCombiner();
+
+#ifndef NDEBUG
+#define GRPC_CALL_COMBINER_START(call_combiner, closure, error, reason) \
+  (call_combiner)->Start((closure), (error), __FILE__, __LINE__, (reason))
+#define GRPC_CALL_COMBINER_STOP(call_combiner, reason) \
+  (call_combiner)->Stop(__FILE__, __LINE__, (reason))
+  /// Starts processing \a closure.
+  void Start(grpc_closure* closure, grpc_error* error, const char* file,
+             int line, const char* reason);
+  /// Yields the call combiner to the next closure in the queue, if any.
+  void Stop(const char* file, int line, const char* reason);
+#else
+#define GRPC_CALL_COMBINER_START(call_combiner, closure, error, reason) \
+  (call_combiner)->Start((closure), (error), (reason))
+#define GRPC_CALL_COMBINER_STOP(call_combiner, reason) \
+  (call_combiner)->Stop((reason))
+  /// Starts processing \a closure.
+  void Start(grpc_closure* closure, grpc_error* error, const char* reason);
+  /// Yields the call combiner to the next closure in the queue, if any.
+  void Stop(const char* reason);
+#endif
+
+  /// Registers \a closure to be invoked when Cancel() is called.
+  ///
+  /// Once a closure is registered, it will always be scheduled exactly
+  /// once; this allows the closure to hold references that will be freed
+  /// regardless of whether or not the call was cancelled.  If a cancellation
+  /// does occur, the closure will be scheduled with the cancellation error;
+  /// otherwise, it will be scheduled with GRPC_ERROR_NONE.
+  ///
+  /// The closure will be scheduled in the following cases:
+  /// - If Cancel() was called prior to registering the closure, it will be
+  ///   scheduled immediately with the cancelation error.
+  /// - If Cancel() is called after registering the closure, the closure will
+  ///   be scheduled with the cancellation error.
+  /// - If SetNotifyOnCancel() is called again to register a new cancellation
+  ///   closure, the previous cancellation closure will be scheduled with
+  ///   GRPC_ERROR_NONE.
+  ///
+  /// If \a closure is NULL, then no closure will be invoked on
+  /// cancellation; this effectively unregisters the previously set closure.
+  /// However, most filters will not need to explicitly unregister their
+  /// callbacks, as this is done automatically when the call is destroyed.
+  /// Filters that schedule the cancellation closure on ExecCtx do not need
+  /// to take a ref on the call stack to guarantee closure liveness. This is
+  /// done by explicitly flushing ExecCtx after the unregistration during
+  /// call destruction.
+  void SetNotifyOnCancel(grpc_closure* closure);
+
+  /// Indicates that the call has been cancelled.
+  void Cancel(grpc_error* error);
+
+ private:
+  void ScheduleClosure(grpc_closure* closure, grpc_error* error);
+#ifdef GRPC_TSAN_ENABLED
+  static void TsanClosure(void* arg, grpc_error* error);
+#endif
+
+  gpr_atm size_ = 0;  // size_t, num closures in queue or currently executing
+  MultiProducerSingleConsumerQueue queue_;
+  // Either 0 (if not cancelled and no cancellation closure set),
+  // a grpc_closure* (if the lowest bit is 0),
+  // or a grpc_error* (if the lowest bit is 1).
+  gpr_atm cancel_state_ = 0;
+#ifdef GRPC_TSAN_ENABLED
+  // A fake ref-counted lock that is kept alive after the destruction of
+  // grpc_call_combiner, when we are running the original closure.
+  //
+  // Ideally we want to lock and unlock the call combiner as a pointer, when the
+  // callback is called. However, original_closure is free to trigger
+  // anything on the call combiner (including destruction of grpc_call).
+  // Thus, we need a ref-counted structure that can outlive the call combiner.
+  struct TsanLock : public RefCounted<TsanLock, NonPolymorphicRefCount> {
+    TsanLock() { TSAN_ANNOTATE_RWLOCK_CREATE(&taken); }
+    ~TsanLock() { TSAN_ANNOTATE_RWLOCK_DESTROY(&taken); }
+    // To avoid double-locking by the same thread, we should acquire/release
+    // the lock only when taken is false. On each acquire taken must be set to
+    // true.
+    std::atomic<bool> taken{false};
+  };
+  RefCountedPtr<TsanLock> tsan_lock_ = MakeRefCounted<TsanLock>();
+  grpc_closure tsan_closure_;
+  grpc_closure* original_closure_;
+#endif
+};
+
+// Helper for running a list of closures in a call combiner.
+//
+// Each callback running in the call combiner will eventually be
+// returned to the surface, at which point the surface will yield the
+// call combiner.  So when we are running in the call combiner and have
+// more than one callback to return to the surface, we need to re-enter
+// the call combiner for all but one of those callbacks.
+class CallCombinerClosureList {
+ public:
+  CallCombinerClosureList() {}
+
+  // Adds a closure to the list.  The closure must eventually result in
+  // the call combiner being yielded.
+  void Add(grpc_closure* closure, grpc_error* error, const char* reason) {
+    closures_.emplace_back(closure, error, reason);
+  }
+
+  // Runs all closures in the call combiner and yields the call combiner.
+  //
+  // All but one of the closures in the list will be scheduled via
+  // GRPC_CALL_COMBINER_START(), and the remaining closure will be
+  // scheduled via ExecCtx::Run(), which will eventually result
+  // in yielding the call combiner.  If the list is empty, then the call
+  // combiner will be yielded immediately.
+  void RunClosures(CallCombiner* call_combiner) {
+    if (closures_.empty()) {
+      GRPC_CALL_COMBINER_STOP(call_combiner, "no closures to schedule");
+      return;
+    }
+    for (size_t i = 1; i < closures_.size(); ++i) {
+      auto& closure = closures_[i];
+      GRPC_CALL_COMBINER_START(call_combiner, closure.closure, closure.error,
+                               closure.reason);
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_call_combiner_trace)) {
+      gpr_log(GPR_INFO,
+              "CallCombinerClosureList executing closure while already "
+              "holding call_combiner %p: closure=%p error=%s reason=%s",
+              call_combiner, closures_[0].closure,
+              grpc_error_string(closures_[0].error), closures_[0].reason);
+    }
+    // This will release the call combiner.
+    ExecCtx::Run(DEBUG_LOCATION, closures_[0].closure, closures_[0].error);
+    closures_.clear();
+  }
+
+  // Runs all closures in the call combiner, but does NOT yield the call
+  // combiner.  All closures will be scheduled via GRPC_CALL_COMBINER_START().
+  void RunClosuresWithoutYielding(CallCombiner* call_combiner) {
+    for (size_t i = 0; i < closures_.size(); ++i) {
+      auto& closure = closures_[i];
+      GRPC_CALL_COMBINER_START(call_combiner, closure.closure, closure.error,
+                               closure.reason);
+    }
+    closures_.clear();
+  }
+
+  size_t size() const { return closures_.size(); }
+
+ private:
+  struct CallCombinerClosure {
+    grpc_closure* closure;
+    grpc_error* error;
+    const char* reason;
+
+    CallCombinerClosure(grpc_closure* closure, grpc_error* error,
+                        const char* reason)
+        : closure(closure), error(error), reason(reason) {}
+  };
+
+  // There are generally a maximum of 6 closures to run in the call
+  // combiner, one for each pending op.
+  InlinedVector<CallCombinerClosure, 6> closures_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.cc
new file mode 100644
index 0000000..40fb377
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.cc	
@@ -0,0 +1,208 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM
+#import <CoreFoundation/CoreFoundation.h>
+#import "src/core/lib/iomgr/cfstream_handle.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/error_cfstream.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+GrpcLibraryInitHolder::GrpcLibraryInitHolder() { grpc_init(); }
+
+GrpcLibraryInitHolder::~GrpcLibraryInitHolder() { grpc_shutdown(); }
+
+void* CFStreamHandle::Retain(void* info) {
+  CFStreamHandle* handle = static_cast<CFStreamHandle*>(info);
+  CFSTREAM_HANDLE_REF(handle, "retain");
+  return info;
+}
+
+void CFStreamHandle::Release(void* info) {
+  CFStreamHandle* handle = static_cast<CFStreamHandle*>(info);
+  CFSTREAM_HANDLE_UNREF(handle, "release");
+}
+
+CFStreamHandle* CFStreamHandle::CreateStreamHandle(
+    CFReadStreamRef read_stream, CFWriteStreamRef write_stream) {
+  return new CFStreamHandle(read_stream, write_stream);
+}
+
+void CFStreamHandle::ReadCallback(CFReadStreamRef stream,
+                                  CFStreamEventType type,
+                                  void* client_callback_info) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_error* error;
+  CFErrorRef stream_error;
+  CFStreamHandle* handle = static_cast<CFStreamHandle*>(client_callback_info);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream ReadCallback (%p, %p, %lu, %p)", handle,
+            stream, type, client_callback_info);
+  }
+  switch (type) {
+    case kCFStreamEventOpenCompleted:
+      handle->open_event_.SetReady();
+      break;
+    case kCFStreamEventHasBytesAvailable:
+    case kCFStreamEventEndEncountered:
+      handle->read_event_.SetReady();
+      break;
+    case kCFStreamEventErrorOccurred:
+      stream_error = CFReadStreamCopyError(stream);
+      error = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_CFERROR(stream_error, "read error"),
+          GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+      CFRelease(stream_error);
+      handle->open_event_.SetShutdown(GRPC_ERROR_REF(error));
+      handle->write_event_.SetShutdown(GRPC_ERROR_REF(error));
+      handle->read_event_.SetShutdown(GRPC_ERROR_REF(error));
+      GRPC_ERROR_UNREF(error);
+      break;
+    default:
+      GPR_UNREACHABLE_CODE(return );
+  }
+}
+void CFStreamHandle::WriteCallback(CFWriteStreamRef stream,
+                                   CFStreamEventType type,
+                                   void* clientCallBackInfo) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_error* error;
+  CFErrorRef stream_error;
+  CFStreamHandle* handle = static_cast<CFStreamHandle*>(clientCallBackInfo);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream WriteCallback (%p, %p, %lu, %p)", handle,
+            stream, type, clientCallBackInfo);
+  }
+  switch (type) {
+    case kCFStreamEventOpenCompleted:
+      handle->open_event_.SetReady();
+      break;
+    case kCFStreamEventCanAcceptBytes:
+    case kCFStreamEventEndEncountered:
+      handle->write_event_.SetReady();
+      break;
+    case kCFStreamEventErrorOccurred:
+      stream_error = CFWriteStreamCopyError(stream);
+      error = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_CFERROR(stream_error, "write error"),
+          GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE);
+      CFRelease(stream_error);
+      handle->open_event_.SetShutdown(GRPC_ERROR_REF(error));
+      handle->write_event_.SetShutdown(GRPC_ERROR_REF(error));
+      handle->read_event_.SetShutdown(GRPC_ERROR_REF(error));
+      GRPC_ERROR_UNREF(error);
+      break;
+    default:
+      GPR_UNREACHABLE_CODE(return );
+  }
+}
+
+CFStreamHandle::CFStreamHandle(CFReadStreamRef read_stream,
+                               CFWriteStreamRef write_stream) {
+  gpr_ref_init(&refcount_, 1);
+  open_event_.InitEvent();
+  read_event_.InitEvent();
+  write_event_.InitEvent();
+  dispatch_queue_ = dispatch_queue_create(nullptr, DISPATCH_QUEUE_SERIAL);
+  CFStreamClientContext ctx = {0, static_cast<void*>(this),
+                               CFStreamHandle::Retain, CFStreamHandle::Release,
+                               nil};
+  CFReadStreamSetClient(
+      read_stream,
+      kCFStreamEventOpenCompleted | kCFStreamEventHasBytesAvailable |
+          kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered,
+      CFStreamHandle::ReadCallback, &ctx);
+  CFWriteStreamSetClient(
+      write_stream,
+      kCFStreamEventOpenCompleted | kCFStreamEventCanAcceptBytes |
+          kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered,
+      CFStreamHandle::WriteCallback, &ctx);
+  CFReadStreamSetDispatchQueue(read_stream, dispatch_queue_);
+  CFWriteStreamSetDispatchQueue(write_stream, dispatch_queue_);
+}
+
+CFStreamHandle::~CFStreamHandle() {
+  open_event_.DestroyEvent();
+  read_event_.DestroyEvent();
+  write_event_.DestroyEvent();
+}
+
+void CFStreamHandle::NotifyOnOpen(grpc_closure* closure) {
+  open_event_.NotifyOn(closure);
+}
+
+void CFStreamHandle::NotifyOnRead(grpc_closure* closure) {
+  read_event_.NotifyOn(closure);
+}
+
+void CFStreamHandle::NotifyOnWrite(grpc_closure* closure) {
+  write_event_.NotifyOn(closure);
+}
+
+void CFStreamHandle::Shutdown(grpc_error* error) {
+  open_event_.SetShutdown(GRPC_ERROR_REF(error));
+  read_event_.SetShutdown(GRPC_ERROR_REF(error));
+  write_event_.SetShutdown(GRPC_ERROR_REF(error));
+  GRPC_ERROR_UNREF(error);
+}
+
+void CFStreamHandle::Ref(const char* file, int line, const char* reason) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&refcount_.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "CFStream Handle ref %p : %s %" PRIdPTR " -> %" PRIdPTR, this,
+            reason, val, val + 1);
+  }
+  gpr_ref(&refcount_);
+}
+
+void CFStreamHandle::Unref(const char* file, int line, const char* reason) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&refcount_.count);
+    gpr_log(GPR_DEBUG,
+            "CFStream Handle unref %p : %s %" PRIdPTR " -> %" PRIdPTR, this,
+            reason, val, val - 1);
+  }
+  if (gpr_unref(&refcount_)) {
+    delete this;
+  }
+}
+
+#else
+
+/* Creating a dummy function so that the grpc_cfstream library will be
+ * non-empty.
+ */
+void CFStreamDummy() {}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.h
new file mode 100644
index 0000000..b0f0664
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/cfstream_handle.h	
@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* The CFStream handle acts as an event synchronization entity for
+ * read/write/open/error/eos events happening on CFStream streams. */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H
+#define GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM
+#import <CoreFoundation/CoreFoundation.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/lockfree_event.h"
+
+class GrpcLibraryInitHolder {
+ public:
+  GrpcLibraryInitHolder();
+  virtual ~GrpcLibraryInitHolder();
+};
+
+class CFStreamHandle : public GrpcLibraryInitHolder {
+ public:
+  static CFStreamHandle* CreateStreamHandle(CFReadStreamRef read_stream,
+                                            CFWriteStreamRef write_stream);
+  /** Use CreateStreamHandle function instead of using this directly. */
+  CFStreamHandle(CFReadStreamRef read_stream, CFWriteStreamRef write_stream);
+  CFStreamHandle(const CFStreamHandle& ref) = delete;
+  CFStreamHandle(CFStreamHandle&& ref) = delete;
+  CFStreamHandle& operator=(const CFStreamHandle& rhs) = delete;
+  ~CFStreamHandle() override;
+
+  void NotifyOnOpen(grpc_closure* closure);
+  void NotifyOnRead(grpc_closure* closure);
+  void NotifyOnWrite(grpc_closure* closure);
+  void Shutdown(grpc_error* error);
+
+  void Ref(const char* file = "", int line = 0, const char* reason = nullptr);
+  void Unref(const char* file = "", int line = 0, const char* reason = nullptr);
+
+ private:
+  static void ReadCallback(CFReadStreamRef stream, CFStreamEventType type,
+                           void* client_callback_info);
+  static void WriteCallback(CFWriteStreamRef stream, CFStreamEventType type,
+                            void* client_callback_info);
+  static void* Retain(void* info);
+  static void Release(void* info);
+
+  grpc_core::LockfreeEvent open_event_;
+  grpc_core::LockfreeEvent read_event_;
+  grpc_core::LockfreeEvent write_event_;
+
+  dispatch_queue_t dispatch_queue_;
+
+  gpr_refcount refcount_;
+};
+
+#ifdef DEBUG
+#define CFSTREAM_HANDLE_REF(handle, reason) \
+  (handle)->Ref(__FILE__, __LINE__, (reason))
+#define CFSTREAM_HANDLE_UNREF(handle, reason) \
+  (handle)->Unref(__FILE__, __LINE__, (reason))
+#else
+#define CFSTREAM_HANDLE_REF(handle, reason) (handle)->Ref()
+#define CFSTREAM_HANDLE_UNREF(handle, reason) (handle)->Unref()
+#endif
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/closure.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/closure.h
new file mode 100644
index 0000000..aae932e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/closure.h	
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CLOSURE_H
+#define GRPC_CORE_LIB_IOMGR_CLOSURE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/profiling/timers.h"
+
+struct grpc_closure;
+typedef struct grpc_closure grpc_closure;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_closure;
+
+typedef struct grpc_closure_list {
+  grpc_closure* head;
+  grpc_closure* tail;
+} grpc_closure_list;
+
+/** gRPC Callback definition.
+ *
+ * \param arg Arbitrary input.
+ * \param error GRPC_ERROR_NONE if no error occurred, otherwise some grpc_error
+ *              describing what went wrong.
+ *              Error contract: it is not the cb's job to unref this error;
+ *              the closure scheduler will do that after the cb returns */
+typedef void (*grpc_iomgr_cb_func)(void* arg, grpc_error* error);
+
+/** A closure over a grpc_iomgr_cb_func. */
+struct grpc_closure {
+  /** Once queued, next indicates the next queued closure; before then, scratch
+   *  space */
+  union {
+    grpc_closure* next;
+    grpc_core::ManualConstructor<
+        grpc_core::MultiProducerSingleConsumerQueue::Node>
+        mpscq_node;
+    uintptr_t scratch;
+  } next_data;
+
+  /** Bound callback. */
+  grpc_iomgr_cb_func cb;
+
+  /** Arguments to be passed to "cb". */
+  void* cb_arg;
+
+  /** Once queued, the result of the closure. Before then: scratch space */
+  union {
+    grpc_error* error;
+    uintptr_t scratch;
+  } error_data;
+
+// extra tracing and debugging for grpc_closure. This incurs a decent amount of
+// overhead per closure, so it must be enabled at compile time.
+#ifndef NDEBUG
+  bool scheduled;
+  bool run;  // true = run, false = scheduled
+  const char* file_created;
+  int line_created;
+  const char* file_initiated;
+  int line_initiated;
+#endif
+};
+
+#ifndef NDEBUG
+inline grpc_closure* grpc_closure_init(const char* file, int line,
+                                       grpc_closure* closure,
+                                       grpc_iomgr_cb_func cb, void* cb_arg) {
+#else
+inline grpc_closure* grpc_closure_init(grpc_closure* closure,
+                                       grpc_iomgr_cb_func cb, void* cb_arg) {
+#endif
+  closure->cb = cb;
+  closure->cb_arg = cb_arg;
+  closure->error_data.error = GRPC_ERROR_NONE;
+#ifndef NDEBUG
+  closure->scheduled = false;
+  closure->file_initiated = nullptr;
+  closure->line_initiated = 0;
+  closure->run = false;
+  closure->file_created = file;
+  closure->line_created = line;
+#endif
+  return closure;
+}
+
+/** Initializes \a closure with \a cb and \a cb_arg. Returns \a closure. */
+#ifndef NDEBUG
+#define GRPC_CLOSURE_INIT(closure, cb, cb_arg, scheduler) \
+  grpc_closure_init(__FILE__, __LINE__, closure, cb, cb_arg)
+#else
+#define GRPC_CLOSURE_INIT(closure, cb, cb_arg, scheduler) \
+  grpc_closure_init(closure, cb, cb_arg)
+#endif
+
+namespace closure_impl {
+
+typedef struct {
+  grpc_iomgr_cb_func cb;
+  void* cb_arg;
+  grpc_closure wrapper;
+} wrapped_closure;
+
+inline void closure_wrapper(void* arg, grpc_error* error) {
+  wrapped_closure* wc = static_cast<wrapped_closure*>(arg);
+  grpc_iomgr_cb_func cb = wc->cb;
+  void* cb_arg = wc->cb_arg;
+  gpr_free(wc);
+  cb(cb_arg, error);
+}
+
+}  // namespace closure_impl
+
+#ifndef NDEBUG
+inline grpc_closure* grpc_closure_create(const char* file, int line,
+                                         grpc_iomgr_cb_func cb, void* cb_arg) {
+#else
+inline grpc_closure* grpc_closure_create(grpc_iomgr_cb_func cb, void* cb_arg) {
+#endif
+  closure_impl::wrapped_closure* wc =
+      static_cast<closure_impl::wrapped_closure*>(gpr_malloc(sizeof(*wc)));
+  wc->cb = cb;
+  wc->cb_arg = cb_arg;
+#ifndef NDEBUG
+  grpc_closure_init(file, line, &wc->wrapper, closure_impl::closure_wrapper,
+                    wc);
+#else
+  grpc_closure_init(&wc->wrapper, closure_impl::closure_wrapper, wc);
+#endif
+  return &wc->wrapper;
+}
+
+/* Create a heap allocated closure: try to avoid except for very rare events */
+#ifndef NDEBUG
+#define GRPC_CLOSURE_CREATE(cb, cb_arg, scheduler) \
+  grpc_closure_create(__FILE__, __LINE__, cb, cb_arg)
+#else
+#define GRPC_CLOSURE_CREATE(cb, cb_arg, scheduler) \
+  grpc_closure_create(cb, cb_arg)
+#endif
+
+#define GRPC_CLOSURE_LIST_INIT \
+  { nullptr, nullptr }
+
+inline void grpc_closure_list_init(grpc_closure_list* closure_list) {
+  closure_list->head = closure_list->tail = nullptr;
+}
+
+/** add \a closure to the end of \a list
+    and set \a closure's result to \a error
+    Returns true if \a list becomes non-empty */
+inline bool grpc_closure_list_append(grpc_closure_list* closure_list,
+                                     grpc_closure* closure, grpc_error* error) {
+  if (closure == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return false;
+  }
+  closure->error_data.error = error;
+  closure->next_data.next = nullptr;
+  bool was_empty = (closure_list->head == nullptr);
+  if (was_empty) {
+    closure_list->head = closure;
+  } else {
+    closure_list->tail->next_data.next = closure;
+  }
+  closure_list->tail = closure;
+  return was_empty;
+}
+
+/** force all success bits in \a list to false */
+inline void grpc_closure_list_fail_all(grpc_closure_list* list,
+                                       grpc_error* forced_failure) {
+  for (grpc_closure* c = list->head; c != nullptr; c = c->next_data.next) {
+    if (c->error_data.error == GRPC_ERROR_NONE) {
+      c->error_data.error = GRPC_ERROR_REF(forced_failure);
+    }
+  }
+  GRPC_ERROR_UNREF(forced_failure);
+}
+
+/** append all closures from \a src to \a dst and empty \a src. */
+inline void grpc_closure_list_move(grpc_closure_list* src,
+                                   grpc_closure_list* dst) {
+  if (src->head == nullptr) {
+    return;
+  }
+  if (dst->head == nullptr) {
+    *dst = *src;
+  } else {
+    dst->tail->next_data.next = src->head;
+    dst->tail = src->tail;
+  }
+  src->head = src->tail = nullptr;
+}
+
+/** return whether \a list is empty. */
+inline bool grpc_closure_list_empty(grpc_closure_list closure_list) {
+  return closure_list.head == nullptr;
+}
+
+namespace grpc_core {
+class Closure {
+ public:
+  static void Run(const DebugLocation& location, grpc_closure* closure,
+                  grpc_error* error) {
+    (void)location;
+    if (closure == nullptr) {
+      GRPC_ERROR_UNREF(error);
+      return;
+    }
+#ifndef NDEBUG
+    if (grpc_trace_closure.enabled()) {
+      gpr_log(GPR_DEBUG, "running closure %p: created [%s:%d]: run [%s:%d]",
+              closure, closure->file_created, closure->line_created,
+              location.file(), location.line());
+    }
+    GPR_ASSERT(closure->cb != nullptr);
+#endif
+    closure->cb(closure->cb_arg, error);
+#ifndef NDEBUG
+    if (grpc_trace_closure.enabled()) {
+      gpr_log(GPR_DEBUG, "closure %p finished", closure);
+    }
+#endif
+    GRPC_ERROR_UNREF(error);
+  }
+};
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_CLOSURE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.cc
new file mode 100644
index 0000000..4b85766
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.cc	
@@ -0,0 +1,339 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/combiner.h"
+
+#include <assert.h>
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/profiling/timers.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_combiner_trace(false, "combiner");
+
+#define GRPC_COMBINER_TRACE(fn)          \
+  do {                                   \
+    if (grpc_combiner_trace.enabled()) { \
+      fn;                                \
+    }                                    \
+  } while (0)
+
+#define STATE_UNORPHANED 1
+#define STATE_ELEM_COUNT_LOW_BIT 2
+
+static void combiner_exec(grpc_core::Combiner* lock, grpc_closure* closure,
+                          grpc_error* error);
+static void combiner_finally_exec(grpc_core::Combiner* lock,
+                                  grpc_closure* closure, grpc_error* error);
+
+static void offload(void* arg, grpc_error* error);
+
+grpc_core::Combiner* grpc_combiner_create(void) {
+  grpc_core::Combiner* lock = new grpc_core::Combiner();
+  gpr_ref_init(&lock->refs, 1);
+  gpr_atm_no_barrier_store(&lock->state, STATE_UNORPHANED);
+  grpc_closure_list_init(&lock->final_list);
+  GRPC_CLOSURE_INIT(&lock->offload, offload, lock, nullptr);
+  GRPC_COMBINER_TRACE(gpr_log(GPR_INFO, "C:%p create", lock));
+  return lock;
+}
+
+static void really_destroy(grpc_core::Combiner* lock) {
+  GRPC_COMBINER_TRACE(gpr_log(GPR_INFO, "C:%p really_destroy", lock));
+  GPR_ASSERT(gpr_atm_no_barrier_load(&lock->state) == 0);
+  delete lock;
+}
+
+static void start_destroy(grpc_core::Combiner* lock) {
+  gpr_atm old_state = gpr_atm_full_fetch_add(&lock->state, -STATE_UNORPHANED);
+  GRPC_COMBINER_TRACE(gpr_log(
+      GPR_INFO, "C:%p really_destroy old_state=%" PRIdPTR, lock, old_state));
+  if (old_state == 1) {
+    really_destroy(lock);
+  }
+}
+
+#ifndef NDEBUG
+#define GRPC_COMBINER_DEBUG_SPAM(op, delta)                                \
+  if (grpc_combiner_trace.enabled()) {                                     \
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,                            \
+            "C:%p %s %" PRIdPTR " --> %" PRIdPTR " %s", lock, (op),        \
+            gpr_atm_no_barrier_load(&lock->refs.count),                    \
+            gpr_atm_no_barrier_load(&lock->refs.count) + (delta), reason); \
+  }
+#else
+#define GRPC_COMBINER_DEBUG_SPAM(op, delta)
+#endif
+
+void grpc_combiner_unref(grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS) {
+  GRPC_COMBINER_DEBUG_SPAM("UNREF", -1);
+  if (gpr_unref(&lock->refs)) {
+    start_destroy(lock);
+  }
+}
+
+grpc_core::Combiner* grpc_combiner_ref(
+    grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS) {
+  GRPC_COMBINER_DEBUG_SPAM("  REF", 1);
+  gpr_ref(&lock->refs);
+  return lock;
+}
+
+static void push_last_on_exec_ctx(grpc_core::Combiner* lock) {
+  lock->next_combiner_on_this_exec_ctx = nullptr;
+  if (grpc_core::ExecCtx::Get()->combiner_data()->active_combiner == nullptr) {
+    grpc_core::ExecCtx::Get()->combiner_data()->active_combiner =
+        grpc_core::ExecCtx::Get()->combiner_data()->last_combiner = lock;
+  } else {
+    grpc_core::ExecCtx::Get()
+        ->combiner_data()
+        ->last_combiner->next_combiner_on_this_exec_ctx = lock;
+    grpc_core::ExecCtx::Get()->combiner_data()->last_combiner = lock;
+  }
+}
+
+static void push_first_on_exec_ctx(grpc_core::Combiner* lock) {
+  lock->next_combiner_on_this_exec_ctx =
+      grpc_core::ExecCtx::Get()->combiner_data()->active_combiner;
+  grpc_core::ExecCtx::Get()->combiner_data()->active_combiner = lock;
+  if (lock->next_combiner_on_this_exec_ctx == nullptr) {
+    grpc_core::ExecCtx::Get()->combiner_data()->last_combiner = lock;
+  }
+}
+
+static void combiner_exec(grpc_core::Combiner* lock, grpc_closure* cl,
+                          grpc_error* error) {
+  GPR_TIMER_SCOPE("combiner.execute", 0);
+  GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS();
+  gpr_atm last = gpr_atm_full_fetch_add(&lock->state, STATE_ELEM_COUNT_LOW_BIT);
+  GRPC_COMBINER_TRACE(gpr_log(GPR_INFO,
+                              "C:%p grpc_combiner_execute c=%p last=%" PRIdPTR,
+                              lock, cl, last));
+  if (last == 1) {
+    GRPC_STATS_INC_COMBINER_LOCKS_INITIATED();
+    GPR_TIMER_MARK("combiner.initiated", 0);
+    gpr_atm_no_barrier_store(&lock->initiating_exec_ctx_or_null,
+                             (gpr_atm)grpc_core::ExecCtx::Get());
+    // first element on this list: add it to the list of combiner locks
+    // executing within this exec_ctx
+    push_last_on_exec_ctx(lock);
+  } else {
+    // there may be a race with setting here: if that happens, we may delay
+    // offload for one or two actions, and that's fine
+    gpr_atm initiator =
+        gpr_atm_no_barrier_load(&lock->initiating_exec_ctx_or_null);
+    if (initiator != 0 && initiator != (gpr_atm)grpc_core::ExecCtx::Get()) {
+      gpr_atm_no_barrier_store(&lock->initiating_exec_ctx_or_null, 0);
+    }
+  }
+  GPR_ASSERT(last & STATE_UNORPHANED);  // ensure lock has not been destroyed
+  assert(cl->cb);
+  cl->error_data.error = error;
+  lock->queue.Push(cl->next_data.mpscq_node.get());
+}
+
+static void move_next() {
+  grpc_core::ExecCtx::Get()->combiner_data()->active_combiner =
+      grpc_core::ExecCtx::Get()
+          ->combiner_data()
+          ->active_combiner->next_combiner_on_this_exec_ctx;
+  if (grpc_core::ExecCtx::Get()->combiner_data()->active_combiner == nullptr) {
+    grpc_core::ExecCtx::Get()->combiner_data()->last_combiner = nullptr;
+  }
+}
+
+static void offload(void* arg, grpc_error* /*error*/) {
+  grpc_core::Combiner* lock = static_cast<grpc_core::Combiner*>(arg);
+  push_last_on_exec_ctx(lock);
+}
+
+static void queue_offload(grpc_core::Combiner* lock) {
+  GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED();
+  move_next();
+  GRPC_COMBINER_TRACE(gpr_log(GPR_INFO, "C:%p queue_offload", lock));
+  grpc_core::Executor::Run(&lock->offload, GRPC_ERROR_NONE);
+}
+
+bool grpc_combiner_continue_exec_ctx() {
+  GPR_TIMER_SCOPE("combiner.continue_exec_ctx", 0);
+  grpc_core::Combiner* lock =
+      grpc_core::ExecCtx::Get()->combiner_data()->active_combiner;
+  if (lock == nullptr) {
+    return false;
+  }
+
+  bool contended =
+      gpr_atm_no_barrier_load(&lock->initiating_exec_ctx_or_null) == 0;
+
+  GRPC_COMBINER_TRACE(gpr_log(GPR_INFO,
+                              "C:%p grpc_combiner_continue_exec_ctx "
+                              "contended=%d "
+                              "exec_ctx_ready_to_finish=%d "
+                              "time_to_execute_final_list=%d",
+                              lock, contended,
+                              grpc_core::ExecCtx::Get()->IsReadyToFinish(),
+                              lock->time_to_execute_final_list));
+
+  // offload only if all the following conditions are true:
+  // 1. the combiner is contended and has more than one closure to execute
+  // 2. the current execution context needs to finish as soon as possible
+  // 3. the current thread is not a worker for any background poller
+  // 4. the DEFAULT executor is threaded
+  if (contended && grpc_core::ExecCtx::Get()->IsReadyToFinish() &&
+      !grpc_iomgr_is_any_background_poller_thread() &&
+      grpc_core::Executor::IsThreadedDefault()) {
+    GPR_TIMER_MARK("offload_from_finished_exec_ctx", 0);
+    // this execution context wants to move on: schedule remaining work to be
+    // picked up on the executor
+    queue_offload(lock);
+    return true;
+  }
+
+  if (!lock->time_to_execute_final_list ||
+      // peek to see if something new has shown up, and execute that with
+      // priority
+      (gpr_atm_acq_load(&lock->state) >> 1) > 1) {
+    grpc_core::MultiProducerSingleConsumerQueue::Node* n = lock->queue.Pop();
+    GRPC_COMBINER_TRACE(
+        gpr_log(GPR_INFO, "C:%p maybe_finish_one n=%p", lock, n));
+    if (n == nullptr) {
+      // queue is in an inconsistent state: use this as a cue that we should
+      // go off and do something else for a while (and come back later)
+      GPR_TIMER_MARK("delay_busy", 0);
+      queue_offload(lock);
+      return true;
+    }
+    GPR_TIMER_SCOPE("combiner.exec1", 0);
+    grpc_closure* cl = reinterpret_cast<grpc_closure*>(n);
+    grpc_error* cl_err = cl->error_data.error;
+#ifndef NDEBUG
+    cl->scheduled = false;
+#endif
+    cl->cb(cl->cb_arg, cl_err);
+    GRPC_ERROR_UNREF(cl_err);
+  } else {
+    grpc_closure* c = lock->final_list.head;
+    GPR_ASSERT(c != nullptr);
+    grpc_closure_list_init(&lock->final_list);
+    int loops = 0;
+    while (c != nullptr) {
+      GPR_TIMER_SCOPE("combiner.exec_1final", 0);
+      GRPC_COMBINER_TRACE(
+          gpr_log(GPR_INFO, "C:%p execute_final[%d] c=%p", lock, loops, c));
+      grpc_closure* next = c->next_data.next;
+      grpc_error* error = c->error_data.error;
+#ifndef NDEBUG
+      c->scheduled = false;
+#endif
+      c->cb(c->cb_arg, error);
+      GRPC_ERROR_UNREF(error);
+      c = next;
+    }
+  }
+
+  GPR_TIMER_MARK("unref", 0);
+  move_next();
+  lock->time_to_execute_final_list = false;
+  gpr_atm old_state =
+      gpr_atm_full_fetch_add(&lock->state, -STATE_ELEM_COUNT_LOW_BIT);
+  GRPC_COMBINER_TRACE(
+      gpr_log(GPR_INFO, "C:%p finish old_state=%" PRIdPTR, lock, old_state));
+// Define a macro to ease readability of the following switch statement.
+#define OLD_STATE_WAS(orphaned, elem_count) \
+  (((orphaned) ? 0 : STATE_UNORPHANED) |    \
+   ((elem_count)*STATE_ELEM_COUNT_LOW_BIT))
+  // Depending on what the previous state was, we need to perform different
+  // actions.
+  switch (old_state) {
+    default:
+      // we have multiple queued work items: just continue executing them
+      break;
+    case OLD_STATE_WAS(false, 2):
+    case OLD_STATE_WAS(true, 2):
+      // we're down to one queued item: if it's the final list we should do that
+      if (!grpc_closure_list_empty(lock->final_list)) {
+        lock->time_to_execute_final_list = true;
+      }
+      break;
+    case OLD_STATE_WAS(false, 1):
+      // had one count, one unorphaned --> unlocked unorphaned
+      return true;
+    case OLD_STATE_WAS(true, 1):
+      // and one count, one orphaned --> unlocked and orphaned
+      really_destroy(lock);
+      return true;
+    case OLD_STATE_WAS(false, 0):
+    case OLD_STATE_WAS(true, 0):
+      // these values are illegal - representing an already unlocked or
+      // deleted lock
+      GPR_UNREACHABLE_CODE(return true);
+  }
+  push_first_on_exec_ctx(lock);
+  return true;
+}
+
+static void enqueue_finally(void* closure, grpc_error* error);
+
+static void combiner_finally_exec(grpc_core::Combiner* lock,
+                                  grpc_closure* closure, grpc_error* error) {
+  GPR_ASSERT(lock != nullptr);
+  GPR_TIMER_SCOPE("combiner.execute_finally", 0);
+  GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS();
+  GRPC_COMBINER_TRACE(gpr_log(
+      GPR_INFO, "C:%p grpc_combiner_execute_finally c=%p; ac=%p", lock, closure,
+      grpc_core::ExecCtx::Get()->combiner_data()->active_combiner));
+  if (grpc_core::ExecCtx::Get()->combiner_data()->active_combiner != lock) {
+    GPR_TIMER_MARK("slowpath", 0);
+    // Using error_data.scratch to store the combiner so that it can be accessed
+    // in enqueue_finally.
+    closure->error_data.scratch = reinterpret_cast<uintptr_t>(lock);
+    lock->Run(GRPC_CLOSURE_CREATE(enqueue_finally, closure, nullptr), error);
+    return;
+  }
+
+  if (grpc_closure_list_empty(lock->final_list)) {
+    gpr_atm_full_fetch_add(&lock->state, STATE_ELEM_COUNT_LOW_BIT);
+  }
+  grpc_closure_list_append(&lock->final_list, closure, error);
+}
+
+static void enqueue_finally(void* closure, grpc_error* error) {
+  grpc_closure* cl = static_cast<grpc_closure*>(closure);
+  combiner_finally_exec(
+      reinterpret_cast<grpc_core::Combiner*>(cl->error_data.scratch), cl,
+      GRPC_ERROR_REF(error));
+}
+
+namespace grpc_core {
+void Combiner::Run(grpc_closure* closure, grpc_error* error) {
+  combiner_exec(this, closure, error);
+}
+
+void Combiner::FinallyRun(grpc_closure* closure, grpc_error* error) {
+  combiner_finally_exec(this, closure, error);
+}
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.h
new file mode 100644
index 0000000..3271206
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/combiner.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_COMBINER_H
+#define GRPC_CORE_LIB_IOMGR_COMBINER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+// TODO(yashkt) : Remove this class and replace it with a class that does not
+// use ExecCtx
+class Combiner {
+ public:
+  void Run(grpc_closure* closure, grpc_error* error);
+  // TODO(yashkt) : Remove this method
+  void FinallyRun(grpc_closure* closure, grpc_error* error);
+  Combiner* next_combiner_on_this_exec_ctx = nullptr;
+  MultiProducerSingleConsumerQueue queue;
+  // either:
+  // a pointer to the initiating exec ctx if that is the only exec_ctx that has
+  // ever queued to this combiner, or NULL. If this is non-null, it's not
+  // dereferencable (since the initiating exec_ctx may have gone out of scope)
+  gpr_atm initiating_exec_ctx_or_null;
+  // state is:
+  // lower bit - zero if orphaned (STATE_UNORPHANED)
+  // other bits - number of items queued on the lock (STATE_ELEM_COUNT_LOW_BIT)
+  gpr_atm state;
+  bool time_to_execute_final_list = false;
+  grpc_closure_list final_list;
+  grpc_closure offload;
+  gpr_refcount refs;
+};
+}  // namespace grpc_core
+
+// Provides serialized access to some resource.
+// Each action queued on a combiner is executed serially in a borrowed thread.
+// The actual thread executing actions may change over time (but there will only
+// ever be one at a time).
+
+// Initialize the lock, with an optional workqueue to shift load to when
+// necessary
+grpc_core::Combiner* grpc_combiner_create(void);
+
+#ifndef NDEBUG
+#define GRPC_COMBINER_DEBUG_ARGS \
+  , const char *file, int line, const char *reason
+#define GRPC_COMBINER_REF(combiner, reason) \
+  grpc_combiner_ref((combiner), __FILE__, __LINE__, (reason))
+#define GRPC_COMBINER_UNREF(combiner, reason) \
+  grpc_combiner_unref((combiner), __FILE__, __LINE__, (reason))
+#else
+#define GRPC_COMBINER_DEBUG_ARGS
+#define GRPC_COMBINER_REF(combiner, reason) grpc_combiner_ref((combiner))
+#define GRPC_COMBINER_UNREF(combiner, reason) grpc_combiner_unref((combiner))
+#endif
+
+// Ref/unref the lock, for when we're sharing the lock ownership
+// Prefer to use the macros above
+grpc_core::Combiner* grpc_combiner_ref(
+    grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS);
+void grpc_combiner_unref(grpc_core::Combiner* lock GRPC_COMBINER_DEBUG_ARGS);
+
+bool grpc_combiner_continue_exec_ctx();
+
+extern grpc_core::DebugOnlyTraceFlag grpc_combiner_trace;
+
+#endif /* GRPC_CORE_LIB_IOMGR_COMBINER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/dynamic_annotations.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/dynamic_annotations.h
new file mode 100644
index 0000000..7139280
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/dynamic_annotations.h	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H
+#define GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_TSAN_ENABLED
+
+#define TSAN_ANNOTATE_HAPPENS_BEFORE(addr) \
+  AnnotateHappensBefore(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_HAPPENS_AFTER(addr) \
+  AnnotateHappensAfter(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_CREATE(addr) \
+  AnnotateRWLockCreate(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_DESTROY(addr) \
+  AnnotateRWLockDestroy(__FILE__, __LINE__, (void*)(addr))
+#define TSAN_ANNOTATE_RWLOCK_ACQUIRED(addr, is_w) \
+  AnnotateRWLockAcquired(__FILE__, __LINE__, (void*)(addr), (is_w))
+#define TSAN_ANNOTATE_RWLOCK_RELEASED(addr, is_w) \
+  AnnotateRWLockReleased(__FILE__, __LINE__, (void*)(addr), (is_w))
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void AnnotateHappensBefore(const char* file, int line, const volatile void* cv);
+void AnnotateHappensAfter(const char* file, int line, const volatile void* cv);
+void AnnotateRWLockCreate(const char* file, int line,
+                          const volatile void* lock);
+void AnnotateRWLockDestroy(const char* file, int line,
+                           const volatile void* lock);
+void AnnotateRWLockAcquired(const char* file, int line,
+                            const volatile void* lock, long is_w);
+void AnnotateRWLockReleased(const char* file, int line,
+                            const volatile void* lock, long is_w);
+#ifdef __cplusplus
+}
+#endif
+
+#else /* GRPC_TSAN_ENABLED */
+
+#define TSAN_ANNOTATE_HAPPENS_BEFORE(addr)
+#define TSAN_ANNOTATE_HAPPENS_AFTER(addr)
+#define TSAN_ANNOTATE_RWLOCK_CREATE(addr)
+#define TSAN_ANNOTATE_RWLOCK_DESTROY(addr)
+#define TSAN_ANNOTATE_RWLOCK_ACQUIRED(addr, is_w)
+#define TSAN_ANNOTATE_RWLOCK_RELEASED(addr, is_w)
+
+#endif /* GRPC_TSAN_ENABLED */
+
+#endif /* GRPC_CORE_LIB_IOMGR_DYNAMIC_ANNOTATIONS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.cc
new file mode 100644
index 0000000..bb07fe7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.cc	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+
+grpc_core::TraceFlag grpc_tcp_trace(false, "tcp");
+
+void grpc_endpoint_read(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                        grpc_closure* cb, bool urgent) {
+  ep->vtable->read(ep, slices, cb, urgent);
+}
+
+void grpc_endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                         grpc_closure* cb, void* arg) {
+  ep->vtable->write(ep, slices, cb, arg);
+}
+
+void grpc_endpoint_add_to_pollset(grpc_endpoint* ep, grpc_pollset* pollset) {
+  ep->vtable->add_to_pollset(ep, pollset);
+}
+
+void grpc_endpoint_add_to_pollset_set(grpc_endpoint* ep,
+                                      grpc_pollset_set* pollset_set) {
+  ep->vtable->add_to_pollset_set(ep, pollset_set);
+}
+
+void grpc_endpoint_delete_from_pollset_set(grpc_endpoint* ep,
+                                           grpc_pollset_set* pollset_set) {
+  ep->vtable->delete_from_pollset_set(ep, pollset_set);
+}
+
+void grpc_endpoint_shutdown(grpc_endpoint* ep, grpc_error* why) {
+  ep->vtable->shutdown(ep, why);
+}
+
+void grpc_endpoint_destroy(grpc_endpoint* ep) { ep->vtable->destroy(ep); }
+
+char* grpc_endpoint_get_peer(grpc_endpoint* ep) {
+  return ep->vtable->get_peer(ep);
+}
+
+int grpc_endpoint_get_fd(grpc_endpoint* ep) { return ep->vtable->get_fd(ep); }
+
+grpc_resource_user* grpc_endpoint_get_resource_user(grpc_endpoint* ep) {
+  return ep->vtable->get_resource_user(ep);
+}
+
+bool grpc_endpoint_can_track_err(grpc_endpoint* ep) {
+  return ep->vtable->can_track_err(ep);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.h
new file mode 100644
index 0000000..932e7e1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint.h	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+
+/* An endpoint caps a streaming channel between two communicating processes.
+   Examples may be: a tcp socket, <stdin+stdout>, or some shared memory. */
+
+typedef struct grpc_endpoint grpc_endpoint;
+typedef struct grpc_endpoint_vtable grpc_endpoint_vtable;
+class Timestamps;
+
+struct grpc_endpoint_vtable {
+  void (*read)(grpc_endpoint* ep, grpc_slice_buffer* slices, grpc_closure* cb,
+               bool urgent);
+  void (*write)(grpc_endpoint* ep, grpc_slice_buffer* slices, grpc_closure* cb,
+                void* arg);
+  void (*add_to_pollset)(grpc_endpoint* ep, grpc_pollset* pollset);
+  void (*add_to_pollset_set)(grpc_endpoint* ep, grpc_pollset_set* pollset);
+  void (*delete_from_pollset_set)(grpc_endpoint* ep, grpc_pollset_set* pollset);
+  void (*shutdown)(grpc_endpoint* ep, grpc_error* why);
+  void (*destroy)(grpc_endpoint* ep);
+  grpc_resource_user* (*get_resource_user)(grpc_endpoint* ep);
+  char* (*get_peer)(grpc_endpoint* ep);
+  int (*get_fd)(grpc_endpoint* ep);
+  bool (*can_track_err)(grpc_endpoint* ep);
+};
+
+/* When data is available on the connection, calls the callback with slices.
+   Callback success indicates that the endpoint can accept more reads, failure
+   indicates the endpoint is closed.
+   Valid slices may be placed into \a slices even when the callback is
+   invoked with error != GRPC_ERROR_NONE. */
+void grpc_endpoint_read(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                        grpc_closure* cb, bool urgent);
+
+char* grpc_endpoint_get_peer(grpc_endpoint* ep);
+
+/* Get the file descriptor used by \a ep. Return -1 if \a ep is not using an fd.
+ */
+int grpc_endpoint_get_fd(grpc_endpoint* ep);
+
+/* Write slices out to the socket.
+
+   If the connection is ready for more data after the end of the call, it
+   returns GRPC_ENDPOINT_DONE.
+   Otherwise it returns GRPC_ENDPOINT_PENDING and calls cb when the
+   connection is ready for more data.
+   \a slices may be mutated at will by the endpoint until cb is called.
+   No guarantee is made to the content of slices after a write EXCEPT that
+   it is a valid slice buffer.
+   \a arg is platform specific. It is currently only used by TCP on linux
+   platforms as an argument that would be forwarded to the timestamps callback.
+   */
+void grpc_endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                         grpc_closure* cb, void* arg);
+
+/* Causes any pending and future read/write callbacks to run immediately with
+   success==0 */
+void grpc_endpoint_shutdown(grpc_endpoint* ep, grpc_error* why);
+void grpc_endpoint_destroy(grpc_endpoint* ep);
+
+/* Add an endpoint to a pollset or pollset_set, so that when the pollset is
+   polled, events from this endpoint are considered */
+void grpc_endpoint_add_to_pollset(grpc_endpoint* ep, grpc_pollset* pollset);
+void grpc_endpoint_add_to_pollset_set(grpc_endpoint* ep,
+                                      grpc_pollset_set* pollset_set);
+
+/* Delete an endpoint from a pollset_set */
+void grpc_endpoint_delete_from_pollset_set(grpc_endpoint* ep,
+                                           grpc_pollset_set* pollset_set);
+
+grpc_resource_user* grpc_endpoint_get_resource_user(grpc_endpoint* endpoint);
+
+bool grpc_endpoint_can_track_err(grpc_endpoint* ep);
+
+struct grpc_endpoint {
+  const grpc_endpoint_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.cc
new file mode 100644
index 0000000..987f2d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.cc	
@@ -0,0 +1,377 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM_ENDPOINT
+
+#import <CoreFoundation/CoreFoundation.h>
+#import "src/core/lib/iomgr/endpoint_cfstream.h"
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/cfstream_handle.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/error_cfstream.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+typedef struct {
+  grpc_endpoint base;
+  gpr_refcount refcount;
+
+  CFReadStreamRef read_stream;
+  CFWriteStreamRef write_stream;
+  CFStreamHandle* stream_sync;
+
+  grpc_closure* read_cb;
+  grpc_closure* write_cb;
+  grpc_slice_buffer* read_slices;
+  grpc_slice_buffer* write_slices;
+
+  grpc_closure read_action;
+  grpc_closure write_action;
+
+  char* peer_string;
+  grpc_resource_user* resource_user;
+  grpc_resource_user_slice_allocator slice_allocator;
+} CFStreamEndpoint;
+
+static void CFStreamFree(CFStreamEndpoint* ep) {
+  grpc_resource_user_unref(ep->resource_user);
+  CFRelease(ep->read_stream);
+  CFRelease(ep->write_stream);
+  CFSTREAM_HANDLE_UNREF(ep->stream_sync, "free");
+  gpr_free(ep->peer_string);
+  gpr_free(ep);
+}
+
+#ifndef NDEBUG
+#define EP_REF(ep, reason) CFStreamRef((ep), (reason), __FILE__, __LINE__)
+#define EP_UNREF(ep, reason) CFStreamUnref((ep), (reason), __FILE__, __LINE__)
+static void CFStreamUnref(CFStreamEndpoint* ep, const char* reason,
+                          const char* file, int line) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&ep->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "CFStream endpoint unref %p : %s %" PRIdPTR " -> %" PRIdPTR, ep,
+            reason, val, val - 1);
+  }
+  if (gpr_unref(&ep->refcount)) {
+    CFStreamFree(ep);
+  }
+}
+static void CFStreamRef(CFStreamEndpoint* ep, const char* reason,
+                        const char* file, int line) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&ep->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "CFStream endpoint ref %p : %s %" PRIdPTR " -> %" PRIdPTR, ep,
+            reason, val, val + 1);
+  }
+  gpr_ref(&ep->refcount);
+}
+#else
+#define EP_REF(ep, reason) CFStreamRef((ep))
+#define EP_UNREF(ep, reason) CFStreamUnref((ep))
+static void CFStreamUnref(CFStreamEndpoint* ep) {
+  if (gpr_unref(&ep->refcount)) {
+    CFStreamFree(ep);
+  }
+}
+static void CFStreamRef(CFStreamEndpoint* ep) { gpr_ref(&ep->refcount); }
+#endif
+
+static grpc_error* CFStreamAnnotateError(grpc_error* src_error,
+                                         CFStreamEndpoint* ep) {
+  return grpc_error_set_str(
+      grpc_error_set_int(src_error, GRPC_ERROR_INT_GRPC_STATUS,
+                         GRPC_STATUS_UNAVAILABLE),
+      GRPC_ERROR_STR_TARGET_ADDRESS,
+      grpc_slice_from_copied_string(ep->peer_string));
+}
+
+static void CallReadCb(CFStreamEndpoint* ep, grpc_error* error) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p call_read_cb %p %p:%p", ep,
+            ep->read_cb, ep->read_cb->cb, ep->read_cb->cb_arg);
+    size_t i;
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_DEBUG, "read: error=%s", str);
+
+    for (i = 0; i < ep->read_slices->count; i++) {
+      char* dump = grpc_dump_slice(ep->read_slices->slices[i],
+                                   GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_DEBUG, "READ %p (peer=%s): %s", ep, ep->peer_string, dump);
+      gpr_free(dump);
+    }
+  }
+  grpc_closure* cb = ep->read_cb;
+  ep->read_cb = nullptr;
+  ep->read_slices = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+static void CallWriteCb(CFStreamEndpoint* ep, grpc_error* error) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p call_write_cb %p %p:%p", ep,
+            ep->write_cb, ep->write_cb->cb, ep->write_cb->cb_arg);
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_DEBUG, "write: error=%s", str);
+  }
+  grpc_closure* cb = ep->write_cb;
+  ep->write_cb = nullptr;
+  ep->write_slices = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+static void ReadAction(void* arg, grpc_error* error) {
+  CFStreamEndpoint* ep = static_cast<CFStreamEndpoint*>(arg);
+  GPR_ASSERT(ep->read_cb != nullptr);
+  if (error) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_slices);
+    CallReadCb(ep, GRPC_ERROR_REF(error));
+    EP_UNREF(ep, "read");
+    return;
+  }
+
+  GPR_ASSERT(ep->read_slices->count == 1);
+  grpc_slice slice = ep->read_slices->slices[0];
+  size_t len = GRPC_SLICE_LENGTH(slice);
+  CFIndex read_size =
+      CFReadStreamRead(ep->read_stream, GRPC_SLICE_START_PTR(slice), len);
+  if (read_size == -1) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_slices);
+    CFErrorRef stream_error = CFReadStreamCopyError(ep->read_stream);
+    if (stream_error != nullptr) {
+      error = CFStreamAnnotateError(
+          GRPC_ERROR_CREATE_FROM_CFERROR(stream_error, "Read error"), ep);
+      CFRelease(stream_error);
+    } else {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Read error");
+    }
+    CallReadCb(ep, error);
+    EP_UNREF(ep, "read");
+  } else if (read_size == 0) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_slices);
+    CallReadCb(ep,
+               CFStreamAnnotateError(
+                   GRPC_ERROR_CREATE_FROM_STATIC_STRING("Socket closed"), ep));
+    EP_UNREF(ep, "read");
+  } else {
+    if (read_size < static_cast<CFIndex>(len)) {
+      grpc_slice_buffer_trim_end(ep->read_slices, len - read_size, nullptr);
+    }
+    CallReadCb(ep, GRPC_ERROR_NONE);
+    EP_UNREF(ep, "read");
+  }
+}
+
+static void WriteAction(void* arg, grpc_error* error) {
+  CFStreamEndpoint* ep = static_cast<CFStreamEndpoint*>(arg);
+  GPR_ASSERT(ep->write_cb != nullptr);
+  if (error) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->write_slices);
+    CallWriteCb(ep, GRPC_ERROR_REF(error));
+    EP_UNREF(ep, "write");
+    return;
+  }
+
+  grpc_slice slice = grpc_slice_buffer_take_first(ep->write_slices);
+  size_t slice_len = GRPC_SLICE_LENGTH(slice);
+  CFIndex write_size = CFWriteStreamWrite(
+      ep->write_stream, GRPC_SLICE_START_PTR(slice), slice_len);
+  if (write_size == -1) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->write_slices);
+    CFErrorRef stream_error = CFWriteStreamCopyError(ep->write_stream);
+    if (stream_error != nullptr) {
+      error = CFStreamAnnotateError(
+          GRPC_ERROR_CREATE_FROM_CFERROR(stream_error, "write failed."), ep);
+      CFRelease(stream_error);
+    } else {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("write failed.");
+    }
+    CallWriteCb(ep, error);
+    EP_UNREF(ep, "write");
+  } else {
+    if (write_size < static_cast<CFIndex>(GRPC_SLICE_LENGTH(slice))) {
+      grpc_slice_buffer_undo_take_first(
+          ep->write_slices, grpc_slice_sub(slice, write_size, slice_len));
+    }
+    if (ep->write_slices->length > 0) {
+      ep->stream_sync->NotifyOnWrite(&ep->write_action);
+    } else {
+      CallWriteCb(ep, GRPC_ERROR_NONE);
+      EP_UNREF(ep, "write");
+    }
+
+    if (grpc_tcp_trace.enabled()) {
+      grpc_slice trace_slice = grpc_slice_sub(slice, 0, write_size);
+      char* dump = grpc_dump_slice(trace_slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_DEBUG, "WRITE %p (peer=%s): %s", ep, ep->peer_string, dump);
+      gpr_free(dump);
+      grpc_slice_unref_internal(trace_slice);
+    }
+  }
+  grpc_slice_unref_internal(slice);
+}
+
+static void CFStreamReadAllocationDone(void* arg, grpc_error* error) {
+  CFStreamEndpoint* ep = static_cast<CFStreamEndpoint*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    ep->stream_sync->NotifyOnRead(&ep->read_action);
+  } else {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_slices);
+    CallReadCb(ep, error);
+    EP_UNREF(ep, "read");
+  }
+}
+
+static void CFStreamRead(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                         grpc_closure* cb, bool urgent) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p read (%p, %p) length:%zu", ep_impl,
+            slices, cb, slices->length);
+  }
+  GPR_ASSERT(ep_impl->read_cb == nullptr);
+  ep_impl->read_cb = cb;
+  ep_impl->read_slices = slices;
+  grpc_slice_buffer_reset_and_unref_internal(slices);
+  EP_REF(ep_impl, "read");
+  if (grpc_resource_user_alloc_slices(&ep_impl->slice_allocator,
+                                      GRPC_TCP_DEFAULT_READ_SLICE_SIZE, 1,
+                                      ep_impl->read_slices)) {
+    ep_impl->stream_sync->NotifyOnRead(&ep_impl->read_action);
+  }
+}
+
+static void CFStreamWrite(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                          grpc_closure* cb, void* arg) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p write (%p, %p) length:%zu",
+            ep_impl, slices, cb, slices->length);
+  }
+  GPR_ASSERT(ep_impl->write_cb == nullptr);
+  ep_impl->write_cb = cb;
+  ep_impl->write_slices = slices;
+  EP_REF(ep_impl, "write");
+  ep_impl->stream_sync->NotifyOnWrite(&ep_impl->write_action);
+}
+
+void CFStreamShutdown(grpc_endpoint* ep, grpc_error* why) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p shutdown (%p)", ep_impl, why);
+  }
+  CFReadStreamClose(ep_impl->read_stream);
+  CFWriteStreamClose(ep_impl->write_stream);
+  ep_impl->stream_sync->Shutdown(why);
+  grpc_resource_user_shutdown(ep_impl->resource_user);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p shutdown DONE (%p)", ep_impl, why);
+  }
+}
+
+void CFStreamDestroy(grpc_endpoint* ep) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CFStream endpoint:%p destroy", ep_impl);
+  }
+  EP_UNREF(ep_impl, "destroy");
+}
+
+grpc_resource_user* CFStreamGetResourceUser(grpc_endpoint* ep) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  return ep_impl->resource_user;
+}
+
+char* CFStreamGetPeer(grpc_endpoint* ep) {
+  CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
+  return gpr_strdup(ep_impl->peer_string);
+}
+
+int CFStreamGetFD(grpc_endpoint* ep) { return 0; }
+
+bool CFStreamCanTrackErr(grpc_endpoint* ep) { return false; }
+
+void CFStreamAddToPollset(grpc_endpoint* ep, grpc_pollset* pollset) {}
+void CFStreamAddToPollsetSet(grpc_endpoint* ep, grpc_pollset_set* pollset) {}
+void CFStreamDeleteFromPollsetSet(grpc_endpoint* ep,
+                                  grpc_pollset_set* pollset) {}
+
+static const grpc_endpoint_vtable vtable = {CFStreamRead,
+                                            CFStreamWrite,
+                                            CFStreamAddToPollset,
+                                            CFStreamAddToPollsetSet,
+                                            CFStreamDeleteFromPollsetSet,
+                                            CFStreamShutdown,
+                                            CFStreamDestroy,
+                                            CFStreamGetResourceUser,
+                                            CFStreamGetPeer,
+                                            CFStreamGetFD,
+                                            CFStreamCanTrackErr};
+
+grpc_endpoint* grpc_cfstream_endpoint_create(
+    CFReadStreamRef read_stream, CFWriteStreamRef write_stream,
+    const char* peer_string, grpc_resource_quota* resource_quota,
+    CFStreamHandle* stream_sync) {
+  CFStreamEndpoint* ep_impl =
+      static_cast<CFStreamEndpoint*>(gpr_malloc(sizeof(CFStreamEndpoint)));
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG,
+            "CFStream endpoint:%p create readStream:%p writeStream: %p",
+            ep_impl, read_stream, write_stream);
+  }
+  ep_impl->base.vtable = &vtable;
+  gpr_ref_init(&ep_impl->refcount, 1);
+  ep_impl->read_stream = read_stream;
+  ep_impl->write_stream = write_stream;
+  CFRetain(read_stream);
+  CFRetain(write_stream);
+  ep_impl->stream_sync = stream_sync;
+  CFSTREAM_HANDLE_REF(ep_impl->stream_sync, "endpoint create");
+
+  ep_impl->peer_string = gpr_strdup(peer_string);
+  ep_impl->read_cb = nil;
+  ep_impl->write_cb = nil;
+  ep_impl->read_slices = nil;
+  ep_impl->write_slices = nil;
+  GRPC_CLOSURE_INIT(&ep_impl->read_action, ReadAction,
+                    static_cast<void*>(ep_impl), grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&ep_impl->write_action, WriteAction,
+                    static_cast<void*>(ep_impl), grpc_schedule_on_exec_ctx);
+  ep_impl->resource_user =
+      grpc_resource_user_create(resource_quota, peer_string);
+  grpc_resource_user_slice_allocator_init(&ep_impl->slice_allocator,
+                                          ep_impl->resource_user,
+                                          CFStreamReadAllocationDone, ep_impl);
+
+  return &ep_impl->base;
+}
+
+#endif /* GRPC_CFSTREAM_ENDPOINT */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.h
new file mode 100644
index 0000000..ef957c1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_cfstream.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_CFSTREAM
+
+#import <CoreFoundation/CoreFoundation.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/cfstream_handle.h"
+#include "src/core/lib/iomgr/endpoint.h"
+
+grpc_endpoint* grpc_cfstream_endpoint_create(
+    CFReadStreamRef read_stream, CFWriteStreamRef write_stream,
+    const char* peer_string, grpc_resource_quota* resource_quota,
+    CFStreamHandle* stream_sync);
+
+#endif /* GRPC_CFSTREAM */
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_CFSTREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair.h
new file mode 100644
index 0000000..08f9e3c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair.h	
@@ -0,0 +1,34 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+
+typedef struct {
+  grpc_endpoint* client;
+  grpc_endpoint* server;
+} grpc_endpoint_pair;
+
+grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char* name,
+                                                   grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_posix.cc
new file mode 100644
index 0000000..c646f71
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_posix.cc	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+
+static void create_sockets(int sv[2]) {
+  int flags;
+  grpc_create_socketpair_if_unix(sv);
+  flags = fcntl(sv[0], F_GETFL, 0);
+  GPR_ASSERT(fcntl(sv[0], F_SETFL, flags | O_NONBLOCK) == 0);
+  flags = fcntl(sv[1], F_GETFL, 0);
+  GPR_ASSERT(fcntl(sv[1], F_SETFL, flags | O_NONBLOCK) == 0);
+  GPR_ASSERT(grpc_set_socket_no_sigpipe_if_possible(sv[0]) == GRPC_ERROR_NONE);
+  GPR_ASSERT(grpc_set_socket_no_sigpipe_if_possible(sv[1]) == GRPC_ERROR_NONE);
+}
+
+grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char* name,
+                                                   grpc_channel_args* args) {
+  int sv[2];
+  grpc_endpoint_pair p;
+  char* final_name;
+  create_sockets(sv);
+
+  grpc_core::ExecCtx exec_ctx;
+
+  gpr_asprintf(&final_name, "%s:client", name);
+  p.client = grpc_tcp_create(grpc_fd_create(sv[1], final_name, false), args,
+                             "socketpair-server");
+  gpr_free(final_name);
+  gpr_asprintf(&final_name, "%s:server", name);
+  p.server = grpc_tcp_create(grpc_fd_create(sv[0], final_name, false), args,
+                             "socketpair-client");
+  gpr_free(final_name);
+
+  return p;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_uv.cc
new file mode 100644
index 0000000..b99d178
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_uv.cc	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <stdlib.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/endpoint_pair.h"
+
+grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char* name,
+                                                   grpc_channel_args* args) {
+  grpc_endpoint_pair endpoint_pair;
+  // TODO(mlumish): implement this properly under libuv
+  GPR_ASSERT(false &&
+             "grpc_iomgr_create_endpoint_pair is not suppoted with libuv");
+  return endpoint_pair;
+}
+
+#endif /* GRPC_UV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_windows.cc
new file mode 100644
index 0000000..9962809
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/endpoint_pair_windows.cc	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+
+static void create_sockets(SOCKET sv[2]) {
+  SOCKET svr_sock = INVALID_SOCKET;
+  SOCKET lst_sock = INVALID_SOCKET;
+  SOCKET cli_sock = INVALID_SOCKET;
+  SOCKADDR_IN addr;
+  int addr_len = sizeof(addr);
+
+  lst_sock = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                       grpc_get_default_wsa_socket_flags());
+  GPR_ASSERT(lst_sock != INVALID_SOCKET);
+
+  memset(&addr, 0, sizeof(addr));
+  addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+  addr.sin_family = AF_INET;
+  GPR_ASSERT(bind(lst_sock, (grpc_sockaddr*)&addr, sizeof(addr)) !=
+             SOCKET_ERROR);
+  GPR_ASSERT(listen(lst_sock, SOMAXCONN) != SOCKET_ERROR);
+  GPR_ASSERT(getsockname(lst_sock, (grpc_sockaddr*)&addr, &addr_len) !=
+             SOCKET_ERROR);
+
+  cli_sock = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                       grpc_get_default_wsa_socket_flags());
+  GPR_ASSERT(cli_sock != INVALID_SOCKET);
+
+  GPR_ASSERT(WSAConnect(cli_sock, (grpc_sockaddr*)&addr, addr_len, NULL, NULL,
+                        NULL, NULL) == 0);
+  svr_sock = accept(lst_sock, (grpc_sockaddr*)&addr, &addr_len);
+  GPR_ASSERT(svr_sock != INVALID_SOCKET);
+
+  closesocket(lst_sock);
+  grpc_tcp_prepare_socket(cli_sock);
+  grpc_tcp_prepare_socket(svr_sock);
+
+  sv[1] = cli_sock;
+  sv[0] = svr_sock;
+}
+
+grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(
+    const char* name, grpc_channel_args* channel_args) {
+  SOCKET sv[2];
+  grpc_endpoint_pair p;
+  create_sockets(sv);
+  grpc_core::ExecCtx exec_ctx;
+  p.client = grpc_tcp_create(grpc_winsocket_create(sv[1], "endpoint:client"),
+                             channel_args, "endpoint:server");
+  p.server = grpc_tcp_create(grpc_winsocket_create(sv[0], "endpoint:server"),
+                             channel_args, "endpoint:client");
+
+  return p;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.cc
new file mode 100644
index 0000000..dedc837
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.cc	
@@ -0,0 +1,815 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/status.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#ifdef GPR_WINDOWS
+#include <grpc/support/log_windows.h>
+#endif
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/error_internal.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_error_refcount(false,
+                                                        "error_refcount");
+grpc_core::DebugOnlyTraceFlag grpc_trace_closure(false, "closure");
+
+static const char* error_int_name(grpc_error_ints key) {
+  switch (key) {
+    case GRPC_ERROR_INT_ERRNO:
+      return "errno";
+    case GRPC_ERROR_INT_FILE_LINE:
+      return "file_line";
+    case GRPC_ERROR_INT_STREAM_ID:
+      return "stream_id";
+    case GRPC_ERROR_INT_GRPC_STATUS:
+      return "grpc_status";
+    case GRPC_ERROR_INT_OFFSET:
+      return "offset";
+    case GRPC_ERROR_INT_INDEX:
+      return "index";
+    case GRPC_ERROR_INT_SIZE:
+      return "size";
+    case GRPC_ERROR_INT_HTTP2_ERROR:
+      return "http2_error";
+    case GRPC_ERROR_INT_TSI_CODE:
+      return "tsi_code";
+    case GRPC_ERROR_INT_SECURITY_STATUS:
+      return "security_status";
+    case GRPC_ERROR_INT_FD:
+      return "fd";
+    case GRPC_ERROR_INT_WSA_ERROR:
+      return "wsa_error";
+    case GRPC_ERROR_INT_HTTP_STATUS:
+      return "http_status";
+    case GRPC_ERROR_INT_LIMIT:
+      return "limit";
+    case GRPC_ERROR_INT_OCCURRED_DURING_WRITE:
+      return "occurred_during_write";
+    case GRPC_ERROR_INT_CHANNEL_CONNECTIVITY_STATE:
+      return "channel_connectivity_state";
+    case GRPC_ERROR_INT_MAX:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+static const char* error_str_name(grpc_error_strs key) {
+  switch (key) {
+    case GRPC_ERROR_STR_KEY:
+      return "key";
+    case GRPC_ERROR_STR_VALUE:
+      return "value";
+    case GRPC_ERROR_STR_DESCRIPTION:
+      return "description";
+    case GRPC_ERROR_STR_OS_ERROR:
+      return "os_error";
+    case GRPC_ERROR_STR_TARGET_ADDRESS:
+      return "target_address";
+    case GRPC_ERROR_STR_SYSCALL:
+      return "syscall";
+    case GRPC_ERROR_STR_FILE:
+      return "file";
+    case GRPC_ERROR_STR_GRPC_MESSAGE:
+      return "grpc_message";
+    case GRPC_ERROR_STR_RAW_BYTES:
+      return "raw_bytes";
+    case GRPC_ERROR_STR_TSI_ERROR:
+      return "tsi_error";
+    case GRPC_ERROR_STR_FILENAME:
+      return "filename";
+    case GRPC_ERROR_STR_QUEUED_BUFFERS:
+      return "queued_buffers";
+    case GRPC_ERROR_STR_MAX:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+static const char* error_time_name(grpc_error_times key) {
+  switch (key) {
+    case GRPC_ERROR_TIME_CREATED:
+      return "created";
+    case GRPC_ERROR_TIME_MAX:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+#ifndef NDEBUG
+grpc_error* grpc_error_do_ref(grpc_error* err, const char* file, int line) {
+  if (grpc_trace_error_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%p: %" PRIdPTR " -> %" PRIdPTR " [%s:%d]", err,
+            gpr_atm_no_barrier_load(&err->atomics.refs.count),
+            gpr_atm_no_barrier_load(&err->atomics.refs.count) + 1, file, line);
+  }
+  gpr_ref(&err->atomics.refs);
+  return err;
+}
+#else
+grpc_error* grpc_error_do_ref(grpc_error* err) {
+  gpr_ref(&err->atomics.refs);
+  return err;
+}
+#endif
+
+static void unref_errs(grpc_error* err) {
+  uint8_t slot = err->first_err;
+  while (slot != UINT8_MAX) {
+    grpc_linked_error* lerr =
+        reinterpret_cast<grpc_linked_error*>(err->arena + slot);
+    GRPC_ERROR_UNREF(lerr->err);
+    GPR_ASSERT(err->last_err == slot ? lerr->next == UINT8_MAX
+                                     : lerr->next != UINT8_MAX);
+    slot = lerr->next;
+  }
+}
+
+static void unref_strs(grpc_error* err) {
+  for (size_t which = 0; which < GRPC_ERROR_STR_MAX; ++which) {
+    uint8_t slot = err->strs[which];
+    if (slot != UINT8_MAX) {
+      grpc_slice_unref_internal(
+          *reinterpret_cast<grpc_slice*>(err->arena + slot));
+    }
+  }
+}
+
+static void error_destroy(grpc_error* err) {
+  GPR_ASSERT(!grpc_error_is_special(err));
+  unref_errs(err);
+  unref_strs(err);
+  gpr_free((void*)gpr_atm_acq_load(&err->atomics.error_string));
+  gpr_free(err);
+}
+
+#ifndef NDEBUG
+void grpc_error_do_unref(grpc_error* err, const char* file, int line) {
+  if (grpc_trace_error_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%p: %" PRIdPTR " -> %" PRIdPTR " [%s:%d]", err,
+            gpr_atm_no_barrier_load(&err->atomics.refs.count),
+            gpr_atm_no_barrier_load(&err->atomics.refs.count) - 1, file, line);
+  }
+  if (gpr_unref(&err->atomics.refs)) {
+    error_destroy(err);
+  }
+}
+#else
+void grpc_error_do_unref(grpc_error* err) {
+  if (gpr_unref(&err->atomics.refs)) {
+    error_destroy(err);
+  }
+}
+#endif
+
+static uint8_t get_placement(grpc_error** err, size_t size) {
+  GPR_ASSERT(*err);
+  uint8_t slots = static_cast<uint8_t>(size / sizeof(intptr_t));
+  if ((*err)->arena_size + slots > (*err)->arena_capacity) {
+    (*err)->arena_capacity = static_cast<uint8_t> GPR_MIN(
+        UINT8_MAX - 1, (3 * (*err)->arena_capacity / 2));
+    if ((*err)->arena_size + slots > (*err)->arena_capacity) {
+      return UINT8_MAX;
+    }
+#ifndef NDEBUG
+    grpc_error* orig = *err;
+#endif
+    *err = static_cast<grpc_error*>(gpr_realloc(
+        *err, sizeof(grpc_error) + (*err)->arena_capacity * sizeof(intptr_t)));
+#ifndef NDEBUG
+    if (grpc_trace_error_refcount.enabled()) {
+      if (*err != orig) {
+        gpr_log(GPR_DEBUG, "realloc %p -> %p", orig, *err);
+      }
+    }
+#endif
+  }
+  uint8_t placement = (*err)->arena_size;
+  (*err)->arena_size = static_cast<uint8_t>((*err)->arena_size + slots);
+  return placement;
+}
+
+static void internal_set_int(grpc_error** err, grpc_error_ints which,
+                             intptr_t value) {
+  uint8_t slot = (*err)->ints[which];
+  if (slot == UINT8_MAX) {
+    slot = get_placement(err, sizeof(value));
+    if (slot == UINT8_MAX) {
+      gpr_log(GPR_ERROR, "Error %p is full, dropping int {\"%s\":%" PRIiPTR "}",
+              *err, error_int_name(which), value);
+      return;
+    }
+  }
+  (*err)->ints[which] = slot;
+  (*err)->arena[slot] = value;
+}
+
+static void internal_set_str(grpc_error** err, grpc_error_strs which,
+                             const grpc_slice& value) {
+  uint8_t slot = (*err)->strs[which];
+  if (slot == UINT8_MAX) {
+    slot = get_placement(err, sizeof(value));
+    if (slot == UINT8_MAX) {
+      const char* str = grpc_slice_to_c_string(value);
+      gpr_log(GPR_ERROR, "Error %p is full, dropping string {\"%s\":\"%s\"}",
+              *err, error_str_name(which), str);
+      gpr_free((void*)str);
+      return;
+    }
+  } else {
+    grpc_slice_unref_internal(
+        *reinterpret_cast<grpc_slice*>((*err)->arena + slot));
+  }
+  (*err)->strs[which] = slot;
+  memcpy((*err)->arena + slot, &value, sizeof(value));
+}
+
+static char* fmt_time(gpr_timespec tm);
+static void internal_set_time(grpc_error** err, grpc_error_times which,
+                              gpr_timespec value) {
+  uint8_t slot = (*err)->times[which];
+  if (slot == UINT8_MAX) {
+    slot = get_placement(err, sizeof(value));
+    if (slot == UINT8_MAX) {
+      const char* time_str = fmt_time(value);
+      gpr_log(GPR_ERROR, "Error %p is full, dropping \"%s\":\"%s\"}", *err,
+              error_time_name(which), time_str);
+      gpr_free((void*)time_str);
+      return;
+    }
+  }
+  (*err)->times[which] = slot;
+  memcpy((*err)->arena + slot, &value, sizeof(value));
+}
+
+static void internal_add_error(grpc_error** err, grpc_error* new_err) {
+  grpc_linked_error new_last = {new_err, UINT8_MAX};
+  uint8_t slot = get_placement(err, sizeof(grpc_linked_error));
+  if (slot == UINT8_MAX) {
+    gpr_log(GPR_ERROR, "Error %p is full, dropping error %p = %s", *err,
+            new_err, grpc_error_string(new_err));
+    GRPC_ERROR_UNREF(new_err);
+    return;
+  }
+  if ((*err)->first_err == UINT8_MAX) {
+    GPR_ASSERT((*err)->last_err == UINT8_MAX);
+    (*err)->last_err = slot;
+    (*err)->first_err = slot;
+  } else {
+    GPR_ASSERT((*err)->last_err != UINT8_MAX);
+    grpc_linked_error* old_last =
+        reinterpret_cast<grpc_linked_error*>((*err)->arena + (*err)->last_err);
+    old_last->next = slot;
+    (*err)->last_err = slot;
+  }
+  memcpy((*err)->arena + slot, &new_last, sizeof(grpc_linked_error));
+}
+
+#define SLOTS_PER_INT (sizeof(intptr_t) / sizeof(intptr_t))
+#define SLOTS_PER_STR (sizeof(grpc_slice) / sizeof(intptr_t))
+#define SLOTS_PER_TIME (sizeof(gpr_timespec) / sizeof(intptr_t))
+#define SLOTS_PER_LINKED_ERROR (sizeof(grpc_linked_error) / sizeof(intptr_t))
+
+// size of storing one int and two slices and a timespec. For line, desc, file,
+// and time created
+#define DEFAULT_ERROR_CAPACITY \
+  (SLOTS_PER_INT + (SLOTS_PER_STR * 2) + SLOTS_PER_TIME)
+
+// It is very common to include and extra int and string in an error
+#define SURPLUS_CAPACITY (2 * SLOTS_PER_INT + SLOTS_PER_TIME)
+
+static gpr_atm g_error_creation_allowed = true;
+
+void grpc_disable_error_creation() {
+  gpr_atm_no_barrier_store(&g_error_creation_allowed, false);
+}
+
+void grpc_enable_error_creation() {
+  gpr_atm_no_barrier_store(&g_error_creation_allowed, true);
+}
+
+grpc_error* grpc_error_create(const char* file, int line,
+                              const grpc_slice& desc, grpc_error** referencing,
+                              size_t num_referencing) {
+  GPR_TIMER_SCOPE("grpc_error_create", 0);
+  uint8_t initial_arena_capacity = static_cast<uint8_t>(
+      DEFAULT_ERROR_CAPACITY +
+      static_cast<uint8_t>(num_referencing * SLOTS_PER_LINKED_ERROR) +
+      SURPLUS_CAPACITY);
+  grpc_error* err = static_cast<grpc_error*>(
+      gpr_malloc(sizeof(*err) + initial_arena_capacity * sizeof(intptr_t)));
+  if (err == nullptr) {  // TODO(ctiller): make gpr_malloc return NULL
+    return GRPC_ERROR_OOM;
+  }
+#ifndef NDEBUG
+  if (!gpr_atm_no_barrier_load(&g_error_creation_allowed)) {
+    gpr_log(GPR_ERROR,
+            "Error creation occurred when error creation was disabled [%s:%d]",
+            file, line);
+    abort();
+  }
+  if (grpc_trace_error_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%p create [%s:%d]", err, file, line);
+  }
+#endif
+
+  err->arena_size = 0;
+  err->arena_capacity = initial_arena_capacity;
+  err->first_err = UINT8_MAX;
+  err->last_err = UINT8_MAX;
+
+  memset(err->ints, UINT8_MAX, GRPC_ERROR_INT_MAX);
+  memset(err->strs, UINT8_MAX, GRPC_ERROR_STR_MAX);
+  memset(err->times, UINT8_MAX, GRPC_ERROR_TIME_MAX);
+
+  internal_set_int(&err, GRPC_ERROR_INT_FILE_LINE, line);
+  internal_set_str(&err, GRPC_ERROR_STR_FILE,
+                   grpc_slice_from_static_string(file));
+  internal_set_str(&err, GRPC_ERROR_STR_DESCRIPTION, desc);
+
+  for (size_t i = 0; i < num_referencing; ++i) {
+    if (referencing[i] == GRPC_ERROR_NONE) continue;
+    internal_add_error(
+        &err,
+        GRPC_ERROR_REF(
+            referencing[i]));  // TODO(ncteisen), change ownership semantics
+  }
+
+  internal_set_time(&err, GRPC_ERROR_TIME_CREATED, gpr_now(GPR_CLOCK_REALTIME));
+
+  gpr_atm_no_barrier_store(&err->atomics.error_string, 0);
+  gpr_ref_init(&err->atomics.refs, 1);
+  return err;
+}
+
+static void ref_strs(grpc_error* err) {
+  for (size_t i = 0; i < GRPC_ERROR_STR_MAX; ++i) {
+    uint8_t slot = err->strs[i];
+    if (slot != UINT8_MAX) {
+      grpc_slice_ref_internal(
+          *reinterpret_cast<grpc_slice*>(err->arena + slot));
+    }
+  }
+}
+
+static void ref_errs(grpc_error* err) {
+  uint8_t slot = err->first_err;
+  while (slot != UINT8_MAX) {
+    grpc_linked_error* lerr =
+        reinterpret_cast<grpc_linked_error*>(err->arena + slot);
+    GRPC_ERROR_REF(lerr->err);
+    slot = lerr->next;
+  }
+}
+
+static grpc_error* copy_error_and_unref(grpc_error* in) {
+  GPR_TIMER_SCOPE("copy_error_and_unref", 0);
+  grpc_error* out;
+  if (grpc_error_is_special(in)) {
+    out = GRPC_ERROR_CREATE_FROM_STATIC_STRING("unknown");
+    if (in == GRPC_ERROR_NONE) {
+      internal_set_str(&out, GRPC_ERROR_STR_DESCRIPTION,
+                       grpc_slice_from_static_string("no error"));
+      internal_set_int(&out, GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_OK);
+    } else if (in == GRPC_ERROR_OOM) {
+      internal_set_str(&out, GRPC_ERROR_STR_DESCRIPTION,
+                       grpc_slice_from_static_string("oom"));
+    } else if (in == GRPC_ERROR_CANCELLED) {
+      internal_set_str(&out, GRPC_ERROR_STR_DESCRIPTION,
+                       grpc_slice_from_static_string("cancelled"));
+      internal_set_int(&out, GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_CANCELLED);
+    }
+  } else if (gpr_ref_is_unique(&in->atomics.refs)) {
+    out = in;
+  } else {
+    uint8_t new_arena_capacity = in->arena_capacity;
+    // the returned err will be added to, so we ensure this is room to avoid
+    // unneeded allocations.
+    if (in->arena_capacity - in->arena_size <
+        static_cast<uint8_t> SLOTS_PER_STR) {
+      new_arena_capacity = static_cast<uint8_t>(3 * new_arena_capacity / 2);
+    }
+    out = static_cast<grpc_error*>(
+        gpr_malloc(sizeof(*in) + new_arena_capacity * sizeof(intptr_t)));
+#ifndef NDEBUG
+    if (grpc_trace_error_refcount.enabled()) {
+      gpr_log(GPR_DEBUG, "%p create copying %p", out, in);
+    }
+#endif
+    // bulk memcpy of the rest of the struct.
+    size_t skip = sizeof(&out->atomics);
+    memcpy((void*)((uintptr_t)out + skip), (void*)((uintptr_t)in + skip),
+           sizeof(*in) + (in->arena_size * sizeof(intptr_t)) - skip);
+    // manually set the atomics and the new capacity
+    gpr_atm_no_barrier_store(&out->atomics.error_string, 0);
+    gpr_ref_init(&out->atomics.refs, 1);
+    out->arena_capacity = new_arena_capacity;
+    ref_strs(out);
+    ref_errs(out);
+    GRPC_ERROR_UNREF(in);
+  }
+  return out;
+}
+
+grpc_error* grpc_error_set_int(grpc_error* src, grpc_error_ints which,
+                               intptr_t value) {
+  GPR_TIMER_SCOPE("grpc_error_set_int", 0);
+  grpc_error* new_err = copy_error_and_unref(src);
+  internal_set_int(&new_err, which, value);
+  return new_err;
+}
+
+typedef struct {
+  grpc_status_code code;
+  const char* msg;
+  size_t len;
+} special_error_status_map;
+
+const special_error_status_map error_status_map[] = {
+    {GRPC_STATUS_OK, "", 0},                // GRPC_ERROR_NONE
+    {GRPC_STATUS_INVALID_ARGUMENT, "", 0},  // GRPC_ERROR_RESERVED_1
+    {GRPC_STATUS_RESOURCE_EXHAUSTED, "Out of memory",
+     strlen("Out of memory")},              // GRPC_ERROR_OOM
+    {GRPC_STATUS_INVALID_ARGUMENT, "", 0},  // GRPC_ERROR_RESERVED_2
+    {GRPC_STATUS_CANCELLED, "Cancelled",
+     strlen("Cancelled")},  // GRPC_ERROR_CANCELLED
+};
+
+bool grpc_error_get_int(grpc_error* err, grpc_error_ints which, intptr_t* p) {
+  GPR_TIMER_SCOPE("grpc_error_get_int", 0);
+  if (grpc_error_is_special(err)) {
+    if (which != GRPC_ERROR_INT_GRPC_STATUS) return false;
+    *p = error_status_map[reinterpret_cast<size_t>(err)].code;
+    return true;
+  }
+  uint8_t slot = err->ints[which];
+  if (slot != UINT8_MAX) {
+    if (p != nullptr) *p = err->arena[slot];
+    return true;
+  }
+  return false;
+}
+
+grpc_error* grpc_error_set_str(grpc_error* src, grpc_error_strs which,
+                               const grpc_slice& str) {
+  GPR_TIMER_SCOPE("grpc_error_set_str", 0);
+  grpc_error* new_err = copy_error_and_unref(src);
+  internal_set_str(&new_err, which, str);
+  return new_err;
+}
+
+bool grpc_error_get_str(grpc_error* err, grpc_error_strs which,
+                        grpc_slice* str) {
+  if (grpc_error_is_special(err)) {
+    if (which != GRPC_ERROR_STR_GRPC_MESSAGE) return false;
+    const special_error_status_map& msg =
+        error_status_map[reinterpret_cast<size_t>(err)];
+    str->refcount = &grpc_core::kNoopRefcount;
+    str->data.refcounted.bytes =
+        reinterpret_cast<uint8_t*>(const_cast<char*>(msg.msg));
+    str->data.refcounted.length = msg.len;
+    return true;
+  }
+  uint8_t slot = err->strs[which];
+  if (slot != UINT8_MAX) {
+    *str = *reinterpret_cast<grpc_slice*>(err->arena + slot);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+grpc_error* grpc_error_add_child(grpc_error* src, grpc_error* child) {
+  GPR_TIMER_SCOPE("grpc_error_add_child", 0);
+  if (src != GRPC_ERROR_NONE) {
+    if (child == GRPC_ERROR_NONE) {
+      /* \a child is empty. Simply return the ref to \a src */
+      return src;
+    } else if (child != src) {
+      grpc_error* new_err = copy_error_and_unref(src);
+      internal_add_error(&new_err, child);
+      return new_err;
+    } else {
+      /* \a src and \a child are the same. Drop one of the references and return
+       * the other */
+      GRPC_ERROR_UNREF(child);
+      return src;
+    }
+  } else {
+    /* \a src is empty. Simply return the ref to \a child */
+    return child;
+  }
+}
+
+static const char* no_error_string = "\"No Error\"";
+static const char* oom_error_string = "\"Out of memory\"";
+static const char* cancelled_error_string = "\"Cancelled\"";
+
+typedef struct {
+  char* key;
+  char* value;
+} kv_pair;
+
+typedef struct {
+  kv_pair* kvs;
+  size_t num_kvs;
+  size_t cap_kvs;
+} kv_pairs;
+
+static void append_chr(char c, char** s, size_t* sz, size_t* cap) {
+  if (*sz == *cap) {
+    *cap = GPR_MAX(8, 3 * *cap / 2);
+    *s = static_cast<char*>(gpr_realloc(*s, *cap));
+  }
+  (*s)[(*sz)++] = c;
+}
+
+static void append_str(const char* str, char** s, size_t* sz, size_t* cap) {
+  for (const char* c = str; *c; c++) {
+    append_chr(*c, s, sz, cap);
+  }
+}
+
+static void append_esc_str(const uint8_t* str, size_t len, char** s, size_t* sz,
+                           size_t* cap) {
+  static const char* hex = "0123456789abcdef";
+  append_chr('"', s, sz, cap);
+  for (size_t i = 0; i < len; i++, str++) {
+    if (*str < 32 || *str >= 127) {
+      append_chr('\\', s, sz, cap);
+      switch (*str) {
+        case '\b':
+          append_chr('b', s, sz, cap);
+          break;
+        case '\f':
+          append_chr('f', s, sz, cap);
+          break;
+        case '\n':
+          append_chr('n', s, sz, cap);
+          break;
+        case '\r':
+          append_chr('r', s, sz, cap);
+          break;
+        case '\t':
+          append_chr('t', s, sz, cap);
+          break;
+        default:
+          append_chr('u', s, sz, cap);
+          append_chr('0', s, sz, cap);
+          append_chr('0', s, sz, cap);
+          append_chr(hex[*str >> 4], s, sz, cap);
+          append_chr(hex[*str & 0x0f], s, sz, cap);
+          break;
+      }
+    } else {
+      append_chr(static_cast<char>(*str), s, sz, cap);
+    }
+  }
+  append_chr('"', s, sz, cap);
+}
+
+static void append_kv(kv_pairs* kvs, char* key, char* value) {
+  if (kvs->num_kvs == kvs->cap_kvs) {
+    kvs->cap_kvs = GPR_MAX(3 * kvs->cap_kvs / 2, 4);
+    kvs->kvs = static_cast<kv_pair*>(
+        gpr_realloc(kvs->kvs, sizeof(*kvs->kvs) * kvs->cap_kvs));
+  }
+  kvs->kvs[kvs->num_kvs].key = key;
+  kvs->kvs[kvs->num_kvs].value = value;
+  kvs->num_kvs++;
+}
+
+static char* key_int(grpc_error_ints which) {
+  return gpr_strdup(error_int_name(which));
+}
+
+static char* fmt_int(intptr_t p) {
+  char* s;
+  gpr_asprintf(&s, "%" PRIdPTR, p);
+  return s;
+}
+
+static void collect_ints_kvs(grpc_error* err, kv_pairs* kvs) {
+  for (size_t which = 0; which < GRPC_ERROR_INT_MAX; ++which) {
+    uint8_t slot = err->ints[which];
+    if (slot != UINT8_MAX) {
+      append_kv(kvs, key_int(static_cast<grpc_error_ints>(which)),
+                fmt_int(err->arena[slot]));
+    }
+  }
+}
+
+static char* key_str(grpc_error_strs which) {
+  return gpr_strdup(error_str_name(which));
+}
+
+static char* fmt_str(const grpc_slice& slice) {
+  char* s = nullptr;
+  size_t sz = 0;
+  size_t cap = 0;
+  append_esc_str((const uint8_t*)GRPC_SLICE_START_PTR(slice),
+                 GRPC_SLICE_LENGTH(slice), &s, &sz, &cap);
+  append_chr(0, &s, &sz, &cap);
+  return s;
+}
+
+static void collect_strs_kvs(grpc_error* err, kv_pairs* kvs) {
+  for (size_t which = 0; which < GRPC_ERROR_STR_MAX; ++which) {
+    uint8_t slot = err->strs[which];
+    if (slot != UINT8_MAX) {
+      append_kv(kvs, key_str(static_cast<grpc_error_strs>(which)),
+                fmt_str(*reinterpret_cast<grpc_slice*>(err->arena + slot)));
+    }
+  }
+}
+
+static char* key_time(grpc_error_times which) {
+  return gpr_strdup(error_time_name(which));
+}
+
+static char* fmt_time(gpr_timespec tm) {
+  char* out;
+  const char* pfx = "!!";
+  switch (tm.clock_type) {
+    case GPR_CLOCK_MONOTONIC:
+      pfx = "@monotonic:";
+      break;
+    case GPR_CLOCK_REALTIME:
+      pfx = "@";
+      break;
+    case GPR_CLOCK_PRECISE:
+      pfx = "@precise:";
+      break;
+    case GPR_TIMESPAN:
+      pfx = "";
+      break;
+  }
+  gpr_asprintf(&out, "\"%s%" PRId64 ".%09d\"", pfx, tm.tv_sec, tm.tv_nsec);
+  return out;
+}
+
+static void collect_times_kvs(grpc_error* err, kv_pairs* kvs) {
+  for (size_t which = 0; which < GRPC_ERROR_TIME_MAX; ++which) {
+    uint8_t slot = err->times[which];
+    if (slot != UINT8_MAX) {
+      append_kv(kvs, key_time(static_cast<grpc_error_times>(which)),
+                fmt_time(*reinterpret_cast<gpr_timespec*>(err->arena + slot)));
+    }
+  }
+}
+
+static void add_errs(grpc_error* err, char** s, size_t* sz, size_t* cap) {
+  uint8_t slot = err->first_err;
+  bool first = true;
+  while (slot != UINT8_MAX) {
+    grpc_linked_error* lerr =
+        reinterpret_cast<grpc_linked_error*>(err->arena + slot);
+    if (!first) append_chr(',', s, sz, cap);
+    first = false;
+    const char* e = grpc_error_string(lerr->err);
+    append_str(e, s, sz, cap);
+    GPR_ASSERT(err->last_err == slot ? lerr->next == UINT8_MAX
+                                     : lerr->next != UINT8_MAX);
+    slot = lerr->next;
+  }
+}
+
+static char* errs_string(grpc_error* err) {
+  char* s = nullptr;
+  size_t sz = 0;
+  size_t cap = 0;
+  append_chr('[', &s, &sz, &cap);
+  add_errs(err, &s, &sz, &cap);
+  append_chr(']', &s, &sz, &cap);
+  append_chr(0, &s, &sz, &cap);
+  return s;
+}
+
+static int cmp_kvs(const void* a, const void* b) {
+  const kv_pair* ka = static_cast<const kv_pair*>(a);
+  const kv_pair* kb = static_cast<const kv_pair*>(b);
+  return strcmp(ka->key, kb->key);
+}
+
+static char* finish_kvs(kv_pairs* kvs) {
+  char* s = nullptr;
+  size_t sz = 0;
+  size_t cap = 0;
+
+  append_chr('{', &s, &sz, &cap);
+  for (size_t i = 0; i < kvs->num_kvs; i++) {
+    if (i != 0) append_chr(',', &s, &sz, &cap);
+    append_esc_str(reinterpret_cast<const uint8_t*>(kvs->kvs[i].key),
+                   strlen(kvs->kvs[i].key), &s, &sz, &cap);
+    gpr_free(kvs->kvs[i].key);
+    append_chr(':', &s, &sz, &cap);
+    append_str(kvs->kvs[i].value, &s, &sz, &cap);
+    gpr_free(kvs->kvs[i].value);
+  }
+  append_chr('}', &s, &sz, &cap);
+  append_chr(0, &s, &sz, &cap);
+
+  gpr_free(kvs->kvs);
+  return s;
+}
+
+const char* grpc_error_string(grpc_error* err) {
+  GPR_TIMER_SCOPE("grpc_error_string", 0);
+  if (err == GRPC_ERROR_NONE) return no_error_string;
+  if (err == GRPC_ERROR_OOM) return oom_error_string;
+  if (err == GRPC_ERROR_CANCELLED) return cancelled_error_string;
+
+  void* p = (void*)gpr_atm_acq_load(&err->atomics.error_string);
+  if (p != nullptr) {
+    return static_cast<const char*>(p);
+  }
+
+  kv_pairs kvs;
+  memset(&kvs, 0, sizeof(kvs));
+
+  collect_ints_kvs(err, &kvs);
+  collect_strs_kvs(err, &kvs);
+  collect_times_kvs(err, &kvs);
+  if (err->first_err != UINT8_MAX) {
+    append_kv(&kvs, gpr_strdup("referenced_errors"), errs_string(err));
+  }
+
+  qsort(kvs.kvs, kvs.num_kvs, sizeof(kv_pair), cmp_kvs);
+
+  char* out = finish_kvs(&kvs);
+
+  if (!gpr_atm_rel_cas(&err->atomics.error_string, 0, (gpr_atm)out)) {
+    gpr_free(out);
+    out = (char*)gpr_atm_acq_load(&err->atomics.error_string);
+  }
+
+  return out;
+}
+
+grpc_error* grpc_os_error(const char* file, int line, int err,
+                          const char* call_name) {
+  return grpc_error_set_str(
+      grpc_error_set_str(
+          grpc_error_set_int(
+              grpc_error_create(file, line,
+                                grpc_slice_from_static_string(strerror(err)),
+                                nullptr, 0),
+              GRPC_ERROR_INT_ERRNO, err),
+          GRPC_ERROR_STR_OS_ERROR,
+          grpc_slice_from_static_string(strerror(err))),
+      GRPC_ERROR_STR_SYSCALL, grpc_slice_from_copied_string(call_name));
+}
+
+#ifdef GPR_WINDOWS
+grpc_error* grpc_wsa_error(const char* file, int line, int err,
+                           const char* call_name) {
+  char* utf8_message = gpr_format_message(err);
+  grpc_error* error = grpc_error_set_str(
+      grpc_error_set_str(
+          grpc_error_set_int(
+              grpc_error_create(file, line,
+                                grpc_slice_from_static_string("OS Error"), NULL,
+                                0),
+              GRPC_ERROR_INT_WSA_ERROR, err),
+          GRPC_ERROR_STR_OS_ERROR, grpc_slice_from_copied_string(utf8_message)),
+      GRPC_ERROR_STR_SYSCALL, grpc_slice_from_static_string(call_name));
+  gpr_free(utf8_message);
+  return error;
+}
+#endif
+
+bool grpc_log_error(const char* what, grpc_error* error, const char* file,
+                    int line) {
+  GPR_DEBUG_ASSERT(error != GRPC_ERROR_NONE);
+  const char* msg = grpc_error_string(error);
+  gpr_log(file, line, GPR_LOG_SEVERITY_ERROR, "%s: %s", what, msg);
+  GRPC_ERROR_UNREF(error);
+  return false;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.h
new file mode 100644
index 0000000..5c79aa7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error.h	
@@ -0,0 +1,277 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <grpc/slice.h>
+#include <grpc/status.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+
+/// Opaque representation of an error.
+/// See https://github.com/grpc/grpc/blob/master/doc/core/grpc-error.md for a
+/// full write up of this object.
+
+typedef struct grpc_error grpc_error;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_error_refcount;
+
+typedef enum {
+  /// 'errno' from the operating system
+  GRPC_ERROR_INT_ERRNO,
+  /// __LINE__ from the call site creating the error
+  GRPC_ERROR_INT_FILE_LINE,
+  /// stream identifier: for errors that are associated with an individual
+  /// wire stream
+  GRPC_ERROR_INT_STREAM_ID,
+  /// grpc status code representing this error
+  GRPC_ERROR_INT_GRPC_STATUS,
+  /// offset into some binary blob (usually represented by
+  /// GRPC_ERROR_STR_RAW_BYTES) where the error occurred
+  GRPC_ERROR_INT_OFFSET,
+  /// context sensitive index associated with the error
+  GRPC_ERROR_INT_INDEX,
+  /// context sensitive size associated with the error
+  GRPC_ERROR_INT_SIZE,
+  /// http2 error code associated with the error (see the HTTP2 RFC)
+  GRPC_ERROR_INT_HTTP2_ERROR,
+  /// TSI status code associated with the error
+  GRPC_ERROR_INT_TSI_CODE,
+  /// grpc_security_status associated with the error
+  GRPC_ERROR_INT_SECURITY_STATUS,
+  /// WSAGetLastError() reported when this error occurred
+  GRPC_ERROR_INT_WSA_ERROR,
+  /// File descriptor associated with this error
+  GRPC_ERROR_INT_FD,
+  /// HTTP status (i.e. 404)
+  GRPC_ERROR_INT_HTTP_STATUS,
+  /// context sensitive limit associated with the error
+  GRPC_ERROR_INT_LIMIT,
+  /// chttp2: did the error occur while a write was in progress
+  GRPC_ERROR_INT_OCCURRED_DURING_WRITE,
+  /// channel connectivity state associated with the error
+  GRPC_ERROR_INT_CHANNEL_CONNECTIVITY_STATE,
+
+  /// Must always be last
+  GRPC_ERROR_INT_MAX,
+} grpc_error_ints;
+
+typedef enum {
+  /// top-level textual description of this error
+  GRPC_ERROR_STR_DESCRIPTION,
+  /// source file in which this error occurred
+  GRPC_ERROR_STR_FILE,
+  /// operating system description of this error
+  GRPC_ERROR_STR_OS_ERROR,
+  /// syscall that generated this error
+  GRPC_ERROR_STR_SYSCALL,
+  /// peer that we were trying to communicate when this error occurred
+  GRPC_ERROR_STR_TARGET_ADDRESS,
+  /// grpc status message associated with this error
+  GRPC_ERROR_STR_GRPC_MESSAGE,
+  /// hex dump (or similar) with the data that generated this error
+  GRPC_ERROR_STR_RAW_BYTES,
+  /// tsi error string associated with this error
+  GRPC_ERROR_STR_TSI_ERROR,
+  /// filename that we were trying to read/write when this error occurred
+  GRPC_ERROR_STR_FILENAME,
+  /// which data was queued for writing when the error occurred
+  GRPC_ERROR_STR_QUEUED_BUFFERS,
+  /// key associated with the error
+  GRPC_ERROR_STR_KEY,
+  /// value associated with the error
+  GRPC_ERROR_STR_VALUE,
+
+  /// Must always be last
+  GRPC_ERROR_STR_MAX,
+} grpc_error_strs;
+
+typedef enum {
+  /// timestamp of error creation
+  GRPC_ERROR_TIME_CREATED,
+
+  /// Must always be last
+  GRPC_ERROR_TIME_MAX,
+} grpc_error_times;
+
+/// The following "special" errors can be propagated without allocating memory.
+/// They are always even so that other code (particularly combiner locks,
+/// polling engines) can safely use the lower bit for themselves.
+
+#define GRPC_ERROR_NONE ((grpc_error*)NULL)
+#define GRPC_ERROR_RESERVED_1 ((grpc_error*)1)
+#define GRPC_ERROR_OOM ((grpc_error*)2)
+#define GRPC_ERROR_RESERVED_2 ((grpc_error*)3)
+#define GRPC_ERROR_CANCELLED ((grpc_error*)4)
+#define GRPC_ERROR_SPECIAL_MAX GRPC_ERROR_CANCELLED
+
+inline bool grpc_error_is_special(struct grpc_error* err) {
+  return err <= GRPC_ERROR_SPECIAL_MAX;
+}
+
+// debug only toggles that allow for a sanity to check that ensures we will
+// never create any errors in the per-RPC hotpath.
+void grpc_disable_error_creation();
+void grpc_enable_error_creation();
+
+const char* grpc_error_string(grpc_error* error);
+
+/// Create an error - but use GRPC_ERROR_CREATE instead
+grpc_error* grpc_error_create(const char* file, int line,
+                              const grpc_slice& desc, grpc_error** referencing,
+                              size_t num_referencing);
+/// Create an error (this is the preferred way of generating an error that is
+///   not due to a system call - for system calls, use GRPC_OS_ERROR or
+///   GRPC_WSA_ERROR as appropriate)
+/// \a referencing is an array of num_referencing elements indicating one or
+/// more errors that are believed to have contributed to this one
+/// err = grpc_error_create(x, y, z, r, nr) is equivalent to:
+///   err = grpc_error_create(x, y, z, NULL, 0);
+///   for (i=0; i<nr; i++) err = grpc_error_add_child(err, r[i]);
+#define GRPC_ERROR_CREATE_FROM_STATIC_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    NULL, 0)
+#define GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc)                           \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    NULL, 0)
+
+// Create an error that references some other errors. This function adds a
+// reference to each error in errs - it does not consume an existing reference
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_static_string(desc), \
+                    errs, count)
+#define GRPC_ERROR_CREATE_REFERENCING_FROM_COPIED_STRING(desc, errs, count)  \
+  grpc_error_create(__FILE__, __LINE__, grpc_slice_from_copied_string(desc), \
+                    errs, count)
+
+#define GRPC_ERROR_CREATE_FROM_VECTOR(desc, error_list) \
+  grpc_error_create_from_vector(__FILE__, __LINE__, desc, error_list)
+
+#ifndef NDEBUG
+grpc_error* grpc_error_do_ref(grpc_error* err, const char* file, int line);
+void grpc_error_do_unref(grpc_error* err, const char* file, int line);
+inline grpc_error* grpc_error_ref(grpc_error* err, const char* file, int line) {
+  if (grpc_error_is_special(err)) return err;
+  return grpc_error_do_ref(err, file, line);
+}
+inline void grpc_error_unref(grpc_error* err, const char* file, int line) {
+  if (grpc_error_is_special(err)) return;
+  grpc_error_do_unref(err, file, line);
+}
+#define GRPC_ERROR_REF(err) grpc_error_ref(err, __FILE__, __LINE__)
+#define GRPC_ERROR_UNREF(err) grpc_error_unref(err, __FILE__, __LINE__)
+#else
+grpc_error* grpc_error_do_ref(grpc_error* err);
+void grpc_error_do_unref(grpc_error* err);
+inline grpc_error* grpc_error_ref(grpc_error* err) {
+  if (grpc_error_is_special(err)) return err;
+  return grpc_error_do_ref(err);
+}
+inline void grpc_error_unref(grpc_error* err) {
+  if (grpc_error_is_special(err)) return;
+  grpc_error_do_unref(err);
+}
+#define GRPC_ERROR_REF(err) grpc_error_ref(err)
+#define GRPC_ERROR_UNREF(err) grpc_error_unref(err)
+#endif
+
+// Consumes all the errors in the vector and forms a referencing error from
+// them. If the vector is empty, return GRPC_ERROR_NONE.
+template <typename VectorType>
+static grpc_error* grpc_error_create_from_vector(const char* file, int line,
+                                                 const char* desc,
+                                                 VectorType* error_list) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (error_list->size() != 0) {
+    error = grpc_error_create(file, line, grpc_slice_from_static_string(desc),
+                              error_list->data(), error_list->size());
+    // Remove refs to all errors in error_list.
+    for (size_t i = 0; i < error_list->size(); i++) {
+      GRPC_ERROR_UNREF((*error_list)[i]);
+    }
+    error_list->clear();
+  }
+  return error;
+}
+
+grpc_error* grpc_error_set_int(grpc_error* src, grpc_error_ints which,
+                               intptr_t value) GRPC_MUST_USE_RESULT;
+/// It is an error to pass nullptr as `p`. Caller should allocate a dummy
+/// intptr_t for `p`, even if the value of `p` is not used.
+bool grpc_error_get_int(grpc_error* error, grpc_error_ints which, intptr_t* p);
+/// This call takes ownership of the slice; the error is responsible for
+/// eventually unref-ing it.
+grpc_error* grpc_error_set_str(grpc_error* src, grpc_error_strs which,
+                               const grpc_slice& str) GRPC_MUST_USE_RESULT;
+/// Returns false if the specified string is not set.
+/// Caller does NOT own the slice.
+bool grpc_error_get_str(grpc_error* error, grpc_error_strs which,
+                        grpc_slice* s);
+
+/// Add a child error: an error that is believed to have contributed to this
+/// error occurring. Allows root causing high level errors from lower level
+/// errors that contributed to them. The src error takes ownership of the
+/// child error.
+///
+/// Edge Conditions -
+/// 1) If either of \a src or \a child is GRPC_ERROR_NONE, returns a reference
+/// to the other argument. 2) If both \a src and \a child are GRPC_ERROR_NONE,
+/// returns GRPC_ERROR_NONE. 3) If \a src and \a child point to the same error,
+/// returns a single reference. (Note that, 2 references should have been
+/// received to the error in this case.)
+grpc_error* grpc_error_add_child(grpc_error* src,
+                                 grpc_error* child) GRPC_MUST_USE_RESULT;
+
+grpc_error* grpc_os_error(const char* file, int line, int err,
+                          const char* call_name) GRPC_MUST_USE_RESULT;
+
+inline grpc_error* grpc_assert_never_ok(grpc_error* error) {
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  return error;
+}
+
+/// create an error associated with errno!=0 (an 'operating system' error)
+#define GRPC_OS_ERROR(err, call_name) \
+  grpc_assert_never_ok(grpc_os_error(__FILE__, __LINE__, err, call_name))
+grpc_error* grpc_wsa_error(const char* file, int line, int err,
+                           const char* call_name) GRPC_MUST_USE_RESULT;
+/// windows only: create an error associated with WSAGetLastError()!=0
+#define GRPC_WSA_ERROR(err, call_name) \
+  grpc_wsa_error(__FILE__, __LINE__, err, call_name)
+
+bool grpc_log_error(const char* what, grpc_error* error, const char* file,
+                    int line);
+inline bool grpc_log_if_error(const char* what, grpc_error* error,
+                              const char* file, int line) {
+  return error == GRPC_ERROR_NONE ? true
+                                  : grpc_log_error(what, error, file, line);
+}
+
+#define GRPC_LOG_IF_ERROR(what, error) \
+  (grpc_log_if_error((what), (error), __FILE__, __LINE__))
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.cc
new file mode 100644
index 0000000..d7af8c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.cc	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_CFSTREAM
+#include <CoreFoundation/CoreFoundation.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+#define MAX_ERROR_DESCRIPTION 256
+
+grpc_error* grpc_error_create_from_cferror(const char* file, int line,
+                                           void* arg, const char* custom_desc) {
+  CFErrorRef error = static_cast<CFErrorRef>(arg);
+  char buf_domain[MAX_ERROR_DESCRIPTION];
+  char buf_desc[MAX_ERROR_DESCRIPTION];
+  char* error_msg;
+  CFErrorDomain domain = CFErrorGetDomain((error));
+  CFIndex code = CFErrorGetCode((error));
+  CFStringRef desc = CFErrorCopyDescription((error));
+  CFStringGetCString(domain, buf_domain, MAX_ERROR_DESCRIPTION,
+                     kCFStringEncodingUTF8);
+  CFStringGetCString(desc, buf_desc, MAX_ERROR_DESCRIPTION,
+                     kCFStringEncodingUTF8);
+  gpr_asprintf(&error_msg, "%s (error domain:%s, code:%ld, description:%s)",
+               custom_desc, buf_domain, code, buf_desc);
+  CFRelease(desc);
+  grpc_error* return_error = grpc_error_create(
+      file, line, grpc_slice_from_copied_string(error_msg), NULL, 0);
+  gpr_free(error_msg);
+  return return_error;
+}
+#endif /* GRPC_CFSTREAM */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.h
new file mode 100644
index 0000000..06ab751
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_cfstream.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H
+
+#ifdef GRPC_CFSTREAM
+// Create an error from Apple Core Foundation CFError object
+#define GRPC_ERROR_CREATE_FROM_CFERROR(error, desc)  \
+  grpc_error_create_from_cferror(__FILE__, __LINE__, \
+                                 static_cast<void*>((error)), (desc))
+grpc_error* grpc_error_create_from_cferror(const char* file, int line,
+                                           void* arg, const char* desc);
+#endif /* GRPC_CFSTREAM */
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_CFSTREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_internal.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_internal.h
new file mode 100644
index 0000000..7b0cbd6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/error_internal.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H
+#define GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>  // TODO, do we need this?
+
+#include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/error.h"
+
+typedef struct grpc_linked_error grpc_linked_error;
+
+struct grpc_linked_error {
+  grpc_error* err;
+  uint8_t next;
+};
+
+// c core representation of an error. See error.h for high level description of
+// this object.
+struct grpc_error {
+  // All atomics in grpc_error must be stored in this nested struct. The rest of
+  // the object is memcpy-ed in bulk in copy_and_unref.
+  struct atomics {
+    gpr_refcount refs;
+    gpr_atm error_string;
+  } atomics;
+  // These arrays index into dynamic arena at the bottom of the struct.
+  // UINT8_MAX is used as a sentinel value.
+  uint8_t ints[GRPC_ERROR_INT_MAX];
+  uint8_t strs[GRPC_ERROR_STR_MAX];
+  uint8_t times[GRPC_ERROR_TIME_MAX];
+  // The child errors are stored in the arena, but are effectively a linked list
+  // structure, since they are contained within grpc_linked_error objects.
+  uint8_t first_err;
+  uint8_t last_err;
+  // The arena is dynamically reallocated with a grow factor of 1.5.
+  uint8_t arena_size;
+  uint8_t arena_capacity;
+  intptr_t arena[0];
+};
+
+#endif /* GRPC_CORE_LIB_IOMGR_ERROR_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.cc
new file mode 100644
index 0000000..e693551
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.cc	
@@ -0,0 +1,1368 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/log.h>
+
+/* This polling engine is only relevant on linux kernels supporting epoll
+   epoll_create() or epoll_create1() */
+#ifdef GRPC_LINUX_EPOLL
+#include "src/core/lib/iomgr/ev_epoll1_linux.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <poll.h>
+#include <pthread.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/lockfree_event.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+
+static grpc_wakeup_fd global_wakeup_fd;
+
+/*******************************************************************************
+ * Singleton epoll set related fields
+ */
+
+#define MAX_EPOLL_EVENTS 100
+#define MAX_EPOLL_EVENTS_HANDLED_PER_ITERATION 1
+
+/* NOTE ON SYNCHRONIZATION:
+ * - Fields in this struct are only modified by the designated poller. Hence
+ *   there is no need for any locks to protect the struct.
+ * - num_events and cursor fields have to be of atomic type to provide memory
+ *   visibility guarantees only. i.e In case of multiple pollers, the designated
+ *   polling thread keeps changing; the thread that wrote these values may be
+ *   different from the thread reading the values
+ */
+typedef struct epoll_set {
+  int epfd;
+
+  /* The epoll_events after the last call to epoll_wait() */
+  struct epoll_event events[MAX_EPOLL_EVENTS];
+
+  /* The number of epoll_events after the last call to epoll_wait() */
+  gpr_atm num_events;
+
+  /* Index of the first event in epoll_events that has to be processed. This
+   * field is only valid if num_events > 0 */
+  gpr_atm cursor;
+} epoll_set;
+
+/* The global singleton epoll set */
+static epoll_set g_epoll_set;
+
+static int epoll_create_and_cloexec() {
+#ifdef GRPC_LINUX_EPOLL_CREATE1
+  int fd = epoll_create1(EPOLL_CLOEXEC);
+  if (fd < 0) {
+    gpr_log(GPR_ERROR, "epoll_create1 unavailable");
+  }
+#else
+  int fd = epoll_create(MAX_EPOLL_EVENTS);
+  if (fd < 0) {
+    gpr_log(GPR_ERROR, "epoll_create unavailable");
+  } else if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0) {
+    gpr_log(GPR_ERROR, "fcntl following epoll_create failed");
+    return -1;
+  }
+#endif
+  return fd;
+}
+
+/* Must be called *only* once */
+static bool epoll_set_init() {
+  g_epoll_set.epfd = epoll_create_and_cloexec();
+  if (g_epoll_set.epfd < 0) {
+    return false;
+  }
+
+  gpr_log(GPR_INFO, "grpc epoll fd: %d", g_epoll_set.epfd);
+  gpr_atm_no_barrier_store(&g_epoll_set.num_events, 0);
+  gpr_atm_no_barrier_store(&g_epoll_set.cursor, 0);
+  return true;
+}
+
+/* epoll_set_init() MUST be called before calling this. */
+static void epoll_set_shutdown() {
+  if (g_epoll_set.epfd >= 0) {
+    close(g_epoll_set.epfd);
+    g_epoll_set.epfd = -1;
+  }
+}
+
+/*******************************************************************************
+ * Fd Declarations
+ */
+
+/* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+struct grpc_fork_fd_list {
+  grpc_fd* fd;
+  grpc_fd* next;
+  grpc_fd* prev;
+};
+
+struct grpc_fd {
+  int fd;
+
+  grpc_core::ManualConstructor<grpc_core::LockfreeEvent> read_closure;
+  grpc_core::ManualConstructor<grpc_core::LockfreeEvent> write_closure;
+  grpc_core::ManualConstructor<grpc_core::LockfreeEvent> error_closure;
+
+  struct grpc_fd* freelist_next;
+
+  grpc_iomgr_object iomgr_object;
+
+  /* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+  grpc_fork_fd_list* fork_fd_list;
+};
+
+static void fd_global_init(void);
+static void fd_global_shutdown(void);
+
+/*******************************************************************************
+ * Pollset Declarations
+ */
+
+typedef enum { UNKICKED, KICKED, DESIGNATED_POLLER } kick_state;
+
+static const char* kick_state_string(kick_state st) {
+  switch (st) {
+    case UNKICKED:
+      return "UNKICKED";
+    case KICKED:
+      return "KICKED";
+    case DESIGNATED_POLLER:
+      return "DESIGNATED_POLLER";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+struct grpc_pollset_worker {
+  kick_state state;
+  int kick_state_mutator;  // which line of code last changed kick state
+  bool initialized_cv;
+  grpc_pollset_worker* next;
+  grpc_pollset_worker* prev;
+  gpr_cv cv;
+  grpc_closure_list schedule_on_end_work;
+};
+
+#define SET_KICK_STATE(worker, kick_state)   \
+  do {                                       \
+    (worker)->state = (kick_state);          \
+    (worker)->kick_state_mutator = __LINE__; \
+  } while (false)
+
+#define MAX_NEIGHBORHOODS 1024
+
+typedef struct pollset_neighborhood {
+  union {
+    char pad[GPR_CACHELINE_SIZE];
+    struct {
+      gpr_mu mu;
+      grpc_pollset* active_root;
+    };
+  };
+} pollset_neighborhood;
+
+struct grpc_pollset {
+  gpr_mu mu;
+  pollset_neighborhood* neighborhood;
+  bool reassigning_neighborhood;
+  grpc_pollset_worker* root_worker;
+  bool kicked_without_poller;
+
+  /* Set to true if the pollset is observed to have no workers available to
+     poll */
+  bool seen_inactive;
+  bool shutting_down;             /* Is the pollset shutting down ? */
+  grpc_closure* shutdown_closure; /* Called after shutdown is complete */
+
+  /* Number of workers who are *about-to* attach themselves to the pollset
+   * worker list */
+  int begin_refs;
+
+  grpc_pollset* next;
+  grpc_pollset* prev;
+};
+
+/*******************************************************************************
+ * Pollset-set Declarations
+ */
+
+struct grpc_pollset_set {
+  char unused;
+};
+
+/*******************************************************************************
+ * Common helpers
+ */
+
+static bool append_error(grpc_error** composite, grpc_error* error,
+                         const char* desc) {
+  if (error == GRPC_ERROR_NONE) return true;
+  if (*composite == GRPC_ERROR_NONE) {
+    *composite = GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc);
+  }
+  *composite = grpc_error_add_child(*composite, error);
+  return false;
+}
+
+/*******************************************************************************
+ * Fd Definitions
+ */
+
+/* We need to keep a freelist not because of any concerns of malloc performance
+ * but instead so that implementations with multiple threads in (for example)
+ * epoll_wait deal with the race between pollset removal and incoming poll
+ * notifications.
+ *
+ * The problem is that the poller ultimately holds a reference to this
+ * object, so it is very difficult to know when is safe to free it, at least
+ * without some expensive synchronization.
+ *
+ * If we keep the object freelisted, in the worst case losing this race just
+ * becomes a spurious read notification on a reused fd.
+ */
+
+/* The alarm system needs to be able to wakeup 'some poller' sometimes
+ * (specifically when a new alarm needs to be triggered earlier than the next
+ * alarm 'epoch'). This wakeup_fd gives us something to alert on when such a
+ * case occurs. */
+
+static grpc_fd* fd_freelist = nullptr;
+static gpr_mu fd_freelist_mu;
+
+/* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+static grpc_fd* fork_fd_list_head = nullptr;
+static gpr_mu fork_fd_list_mu;
+
+static void fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); }
+
+static void fd_global_shutdown(void) {
+  // TODO(guantaol): We don't have a reasonable explanation about this
+  // lock()/unlock() pattern. It can be a valid barrier if there is at most one
+  // pending lock() at this point. Otherwise, there is still a possibility of
+  // use-after-free race. Need to reason about the code and/or clean it up.
+  gpr_mu_lock(&fd_freelist_mu);
+  gpr_mu_unlock(&fd_freelist_mu);
+  while (fd_freelist != nullptr) {
+    grpc_fd* fd = fd_freelist;
+    fd_freelist = fd_freelist->freelist_next;
+    gpr_free(fd);
+  }
+  gpr_mu_destroy(&fd_freelist_mu);
+}
+
+static void fork_fd_list_add_grpc_fd(grpc_fd* fd) {
+  if (grpc_core::Fork::Enabled()) {
+    gpr_mu_lock(&fork_fd_list_mu);
+    fd->fork_fd_list =
+        static_cast<grpc_fork_fd_list*>(gpr_malloc(sizeof(grpc_fork_fd_list)));
+    fd->fork_fd_list->next = fork_fd_list_head;
+    fd->fork_fd_list->prev = nullptr;
+    if (fork_fd_list_head != nullptr) {
+      fork_fd_list_head->fork_fd_list->prev = fd;
+    }
+    fork_fd_list_head = fd;
+    gpr_mu_unlock(&fork_fd_list_mu);
+  }
+}
+
+static void fork_fd_list_remove_grpc_fd(grpc_fd* fd) {
+  if (grpc_core::Fork::Enabled()) {
+    gpr_mu_lock(&fork_fd_list_mu);
+    if (fork_fd_list_head == fd) {
+      fork_fd_list_head = fd->fork_fd_list->next;
+    }
+    if (fd->fork_fd_list->prev != nullptr) {
+      fd->fork_fd_list->prev->fork_fd_list->next = fd->fork_fd_list->next;
+    }
+    if (fd->fork_fd_list->next != nullptr) {
+      fd->fork_fd_list->next->fork_fd_list->prev = fd->fork_fd_list->prev;
+    }
+    gpr_free(fd->fork_fd_list);
+    gpr_mu_unlock(&fork_fd_list_mu);
+  }
+}
+
+static grpc_fd* fd_create(int fd, const char* name, bool track_err) {
+  grpc_fd* new_fd = nullptr;
+
+  gpr_mu_lock(&fd_freelist_mu);
+  if (fd_freelist != nullptr) {
+    new_fd = fd_freelist;
+    fd_freelist = fd_freelist->freelist_next;
+  }
+  gpr_mu_unlock(&fd_freelist_mu);
+
+  if (new_fd == nullptr) {
+    new_fd = static_cast<grpc_fd*>(gpr_malloc(sizeof(grpc_fd)));
+    new_fd->read_closure.Init();
+    new_fd->write_closure.Init();
+    new_fd->error_closure.Init();
+  }
+  new_fd->fd = fd;
+  new_fd->read_closure->InitEvent();
+  new_fd->write_closure->InitEvent();
+  new_fd->error_closure->InitEvent();
+
+  new_fd->freelist_next = nullptr;
+
+  char* fd_name;
+  gpr_asprintf(&fd_name, "%s fd=%d", name, fd);
+  grpc_iomgr_register_object(&new_fd->iomgr_object, fd_name);
+  fork_fd_list_add_grpc_fd(new_fd);
+#ifndef NDEBUG
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+    gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, new_fd, fd_name);
+  }
+#endif
+  gpr_free(fd_name);
+
+  struct epoll_event ev;
+  ev.events = static_cast<uint32_t>(EPOLLIN | EPOLLOUT | EPOLLET);
+  /* Use the least significant bit of ev.data.ptr to store track_err. We expect
+   * the addresses to be word aligned. We need to store track_err to avoid
+   * synchronization issues when accessing it after receiving an event.
+   * Accessing fd would be a data race there because the fd might have been
+   * returned to the free list at that point. */
+  ev.data.ptr = reinterpret_cast<void*>(reinterpret_cast<intptr_t>(new_fd) |
+                                        (track_err ? 1 : 0));
+  if (epoll_ctl(g_epoll_set.epfd, EPOLL_CTL_ADD, fd, &ev) != 0) {
+    gpr_log(GPR_ERROR, "epoll_ctl failed: %s", strerror(errno));
+  }
+
+  return new_fd;
+}
+
+static int fd_wrapped_fd(grpc_fd* fd) { return fd->fd; }
+
+/* if 'releasing_fd' is true, it means that we are going to detach the internal
+ * fd from grpc_fd structure (i.e which means we should not be calling
+ * shutdown() syscall on that fd) */
+static void fd_shutdown_internal(grpc_fd* fd, grpc_error* why,
+                                 bool releasing_fd) {
+  if (fd->read_closure->SetShutdown(GRPC_ERROR_REF(why))) {
+    if (!releasing_fd) {
+      shutdown(fd->fd, SHUT_RDWR);
+    } else {
+      /* we need a dummy event for earlier linux versions. */
+      epoll_event dummy_event;
+      if (epoll_ctl(g_epoll_set.epfd, EPOLL_CTL_DEL, fd->fd, &dummy_event) !=
+          0) {
+        gpr_log(GPR_ERROR, "epoll_ctl failed: %s", strerror(errno));
+      }
+    }
+    fd->write_closure->SetShutdown(GRPC_ERROR_REF(why));
+    fd->error_closure->SetShutdown(GRPC_ERROR_REF(why));
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+/* Might be called multiple times */
+static void fd_shutdown(grpc_fd* fd, grpc_error* why) {
+  fd_shutdown_internal(fd, why, false);
+}
+
+static void fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                      const char* reason) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  bool is_release_fd = (release_fd != nullptr);
+
+  if (!fd->read_closure->IsShutdown()) {
+    fd_shutdown_internal(fd, GRPC_ERROR_CREATE_FROM_COPIED_STRING(reason),
+                         is_release_fd);
+  }
+
+  /* If release_fd is not NULL, we should be relinquishing control of the file
+     descriptor fd->fd (but we still own the grpc_fd structure). */
+  if (is_release_fd) {
+    *release_fd = fd->fd;
+  } else {
+    close(fd->fd);
+  }
+
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_done, GRPC_ERROR_REF(error));
+
+  grpc_iomgr_unregister_object(&fd->iomgr_object);
+  fork_fd_list_remove_grpc_fd(fd);
+  fd->read_closure->DestroyEvent();
+  fd->write_closure->DestroyEvent();
+  fd->error_closure->DestroyEvent();
+
+  gpr_mu_lock(&fd_freelist_mu);
+  fd->freelist_next = fd_freelist;
+  fd_freelist = fd;
+  gpr_mu_unlock(&fd_freelist_mu);
+}
+
+static bool fd_is_shutdown(grpc_fd* fd) {
+  return fd->read_closure->IsShutdown();
+}
+
+static void fd_notify_on_read(grpc_fd* fd, grpc_closure* closure) {
+  fd->read_closure->NotifyOn(closure);
+}
+
+static void fd_notify_on_write(grpc_fd* fd, grpc_closure* closure) {
+  fd->write_closure->NotifyOn(closure);
+}
+
+static void fd_notify_on_error(grpc_fd* fd, grpc_closure* closure) {
+  fd->error_closure->NotifyOn(closure);
+}
+
+static void fd_become_readable(grpc_fd* fd) { fd->read_closure->SetReady(); }
+
+static void fd_become_writable(grpc_fd* fd) { fd->write_closure->SetReady(); }
+
+static void fd_has_errors(grpc_fd* fd) { fd->error_closure->SetReady(); }
+
+/*******************************************************************************
+ * Pollset Definitions
+ */
+
+GPR_TLS_DECL(g_current_thread_pollset);
+GPR_TLS_DECL(g_current_thread_worker);
+
+/* The designated poller */
+static gpr_atm g_active_poller;
+
+static pollset_neighborhood* g_neighborhoods;
+static size_t g_num_neighborhoods;
+
+/* Return true if first in list */
+static bool worker_insert(grpc_pollset* pollset, grpc_pollset_worker* worker) {
+  if (pollset->root_worker == nullptr) {
+    pollset->root_worker = worker;
+    worker->next = worker->prev = worker;
+    return true;
+  } else {
+    worker->next = pollset->root_worker;
+    worker->prev = worker->next->prev;
+    worker->next->prev = worker;
+    worker->prev->next = worker;
+    return false;
+  }
+}
+
+/* Return true if last in list */
+typedef enum { EMPTIED, NEW_ROOT, REMOVED } worker_remove_result;
+
+static worker_remove_result worker_remove(grpc_pollset* pollset,
+                                          grpc_pollset_worker* worker) {
+  if (worker == pollset->root_worker) {
+    if (worker == worker->next) {
+      pollset->root_worker = nullptr;
+      return EMPTIED;
+    } else {
+      pollset->root_worker = worker->next;
+      worker->prev->next = worker->next;
+      worker->next->prev = worker->prev;
+      return NEW_ROOT;
+    }
+  } else {
+    worker->prev->next = worker->next;
+    worker->next->prev = worker->prev;
+    return REMOVED;
+  }
+}
+
+static size_t choose_neighborhood(void) {
+  return static_cast<size_t>(gpr_cpu_current_cpu()) % g_num_neighborhoods;
+}
+
+static grpc_error* pollset_global_init(void) {
+  gpr_tls_init(&g_current_thread_pollset);
+  gpr_tls_init(&g_current_thread_worker);
+  gpr_atm_no_barrier_store(&g_active_poller, 0);
+  global_wakeup_fd.read_fd = -1;
+  grpc_error* err = grpc_wakeup_fd_init(&global_wakeup_fd);
+  if (err != GRPC_ERROR_NONE) return err;
+  struct epoll_event ev;
+  ev.events = static_cast<uint32_t>(EPOLLIN | EPOLLET);
+  ev.data.ptr = &global_wakeup_fd;
+  if (epoll_ctl(g_epoll_set.epfd, EPOLL_CTL_ADD, global_wakeup_fd.read_fd,
+                &ev) != 0) {
+    return GRPC_OS_ERROR(errno, "epoll_ctl");
+  }
+  g_num_neighborhoods = GPR_CLAMP(gpr_cpu_num_cores(), 1, MAX_NEIGHBORHOODS);
+  g_neighborhoods = static_cast<pollset_neighborhood*>(
+      gpr_zalloc(sizeof(*g_neighborhoods) * g_num_neighborhoods));
+  for (size_t i = 0; i < g_num_neighborhoods; i++) {
+    gpr_mu_init(&g_neighborhoods[i].mu);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static void pollset_global_shutdown(void) {
+  gpr_tls_destroy(&g_current_thread_pollset);
+  gpr_tls_destroy(&g_current_thread_worker);
+  if (global_wakeup_fd.read_fd != -1) grpc_wakeup_fd_destroy(&global_wakeup_fd);
+  for (size_t i = 0; i < g_num_neighborhoods; i++) {
+    gpr_mu_destroy(&g_neighborhoods[i].mu);
+  }
+  gpr_free(g_neighborhoods);
+}
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  gpr_mu_init(&pollset->mu);
+  *mu = &pollset->mu;
+  pollset->neighborhood = &g_neighborhoods[choose_neighborhood()];
+  pollset->reassigning_neighborhood = false;
+  pollset->root_worker = nullptr;
+  pollset->kicked_without_poller = false;
+  pollset->seen_inactive = true;
+  pollset->shutting_down = false;
+  pollset->shutdown_closure = nullptr;
+  pollset->begin_refs = 0;
+  pollset->next = pollset->prev = nullptr;
+}
+
+static void pollset_destroy(grpc_pollset* pollset) {
+  gpr_mu_lock(&pollset->mu);
+  if (!pollset->seen_inactive) {
+    pollset_neighborhood* neighborhood = pollset->neighborhood;
+    gpr_mu_unlock(&pollset->mu);
+  retry_lock_neighborhood:
+    gpr_mu_lock(&neighborhood->mu);
+    gpr_mu_lock(&pollset->mu);
+    if (!pollset->seen_inactive) {
+      if (pollset->neighborhood != neighborhood) {
+        gpr_mu_unlock(&neighborhood->mu);
+        neighborhood = pollset->neighborhood;
+        gpr_mu_unlock(&pollset->mu);
+        goto retry_lock_neighborhood;
+      }
+      pollset->prev->next = pollset->next;
+      pollset->next->prev = pollset->prev;
+      if (pollset == pollset->neighborhood->active_root) {
+        pollset->neighborhood->active_root =
+            pollset->next == pollset ? nullptr : pollset->next;
+      }
+    }
+    gpr_mu_unlock(&pollset->neighborhood->mu);
+  }
+  gpr_mu_unlock(&pollset->mu);
+  gpr_mu_destroy(&pollset->mu);
+}
+
+static grpc_error* pollset_kick_all(grpc_pollset* pollset) {
+  GPR_TIMER_SCOPE("pollset_kick_all", 0);
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (pollset->root_worker != nullptr) {
+    grpc_pollset_worker* worker = pollset->root_worker;
+    do {
+      GRPC_STATS_INC_POLLSET_KICK();
+      switch (worker->state) {
+        case KICKED:
+          GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+          break;
+        case UNKICKED:
+          SET_KICK_STATE(worker, KICKED);
+          if (worker->initialized_cv) {
+            GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+            gpr_cv_signal(&worker->cv);
+          }
+          break;
+        case DESIGNATED_POLLER:
+          GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD();
+          SET_KICK_STATE(worker, KICKED);
+          append_error(&error, grpc_wakeup_fd_wakeup(&global_wakeup_fd),
+                       "pollset_kick_all");
+          break;
+      }
+
+      worker = worker->next;
+    } while (worker != pollset->root_worker);
+  }
+  // TODO: sreek.  Check if we need to set 'kicked_without_poller' to true here
+  // in the else case
+  return error;
+}
+
+static void pollset_maybe_finish_shutdown(grpc_pollset* pollset) {
+  if (pollset->shutdown_closure != nullptr && pollset->root_worker == nullptr &&
+      pollset->begin_refs == 0) {
+    GPR_TIMER_MARK("pollset_finish_shutdown", 0);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, pollset->shutdown_closure,
+                            GRPC_ERROR_NONE);
+    pollset->shutdown_closure = nullptr;
+  }
+}
+
+static void pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  GPR_TIMER_SCOPE("pollset_shutdown", 0);
+  GPR_ASSERT(pollset->shutdown_closure == nullptr);
+  GPR_ASSERT(!pollset->shutting_down);
+  pollset->shutdown_closure = closure;
+  pollset->shutting_down = true;
+  GRPC_LOG_IF_ERROR("pollset_shutdown", pollset_kick_all(pollset));
+  pollset_maybe_finish_shutdown(pollset);
+}
+
+static int poll_deadline_to_millis_timeout(grpc_millis millis) {
+  if (millis == GRPC_MILLIS_INF_FUTURE) return -1;
+  grpc_millis delta = millis - grpc_core::ExecCtx::Get()->Now();
+  if (delta > INT_MAX) {
+    return INT_MAX;
+  } else if (delta < 0) {
+    return 0;
+  } else {
+    return static_cast<int>(delta);
+  }
+}
+
+/* Process the epoll events found by do_epoll_wait() function.
+   - g_epoll_set.cursor points to the index of the first event to be processed
+   - This function then processes up-to MAX_EPOLL_EVENTS_PER_ITERATION and
+     updates the g_epoll_set.cursor
+
+   NOTE ON SYNCRHONIZATION: Similar to do_epoll_wait(), this function is only
+   called by g_active_poller thread. So there is no need for synchronization
+   when accessing fields in g_epoll_set */
+static grpc_error* process_epoll_events(grpc_pollset* /*pollset*/) {
+  GPR_TIMER_SCOPE("process_epoll_events", 0);
+
+  static const char* err_desc = "process_events";
+  grpc_error* error = GRPC_ERROR_NONE;
+  long num_events = gpr_atm_acq_load(&g_epoll_set.num_events);
+  long cursor = gpr_atm_acq_load(&g_epoll_set.cursor);
+  for (int idx = 0;
+       (idx < MAX_EPOLL_EVENTS_HANDLED_PER_ITERATION) && cursor != num_events;
+       idx++) {
+    long c = cursor++;
+    struct epoll_event* ev = &g_epoll_set.events[c];
+    void* data_ptr = ev->data.ptr;
+
+    if (data_ptr == &global_wakeup_fd) {
+      append_error(&error, grpc_wakeup_fd_consume_wakeup(&global_wakeup_fd),
+                   err_desc);
+    } else {
+      grpc_fd* fd = reinterpret_cast<grpc_fd*>(
+          reinterpret_cast<intptr_t>(data_ptr) & ~static_cast<intptr_t>(1));
+      bool track_err =
+          reinterpret_cast<intptr_t>(data_ptr) & static_cast<intptr_t>(1);
+      bool cancel = (ev->events & EPOLLHUP) != 0;
+      bool error = (ev->events & EPOLLERR) != 0;
+      bool read_ev = (ev->events & (EPOLLIN | EPOLLPRI)) != 0;
+      bool write_ev = (ev->events & EPOLLOUT) != 0;
+      bool err_fallback = error && !track_err;
+
+      if (error && !err_fallback) {
+        fd_has_errors(fd);
+      }
+
+      if (read_ev || cancel || err_fallback) {
+        fd_become_readable(fd);
+      }
+
+      if (write_ev || cancel || err_fallback) {
+        fd_become_writable(fd);
+      }
+    }
+  }
+  gpr_atm_rel_store(&g_epoll_set.cursor, cursor);
+  return error;
+}
+
+/* Do epoll_wait and store the events in g_epoll_set.events field. This does not
+   "process" any of the events yet; that is done in process_epoll_events().
+   *See process_epoll_events() function for more details.
+
+   NOTE ON SYNCHRONIZATION: At any point of time, only the g_active_poller
+   (i.e the designated poller thread) will be calling this function. So there is
+   no need for any synchronization when accesing fields in g_epoll_set */
+static grpc_error* do_epoll_wait(grpc_pollset* ps, grpc_millis deadline) {
+  GPR_TIMER_SCOPE("do_epoll_wait", 0);
+
+  int r;
+  int timeout = poll_deadline_to_millis_timeout(deadline);
+  if (timeout != 0) {
+    GRPC_SCHEDULING_START_BLOCKING_REGION;
+  }
+  do {
+    GRPC_STATS_INC_SYSCALL_POLL();
+    r = epoll_wait(g_epoll_set.epfd, g_epoll_set.events, MAX_EPOLL_EVENTS,
+                   timeout);
+  } while (r < 0 && errno == EINTR);
+  if (timeout != 0) {
+    GRPC_SCHEDULING_END_BLOCKING_REGION;
+  }
+
+  if (r < 0) return GRPC_OS_ERROR(errno, "epoll_wait");
+
+  GRPC_STATS_INC_POLL_EVENTS_RETURNED(r);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "ps: %p poll got %d events", ps, r);
+  }
+
+  gpr_atm_rel_store(&g_epoll_set.num_events, r);
+  gpr_atm_rel_store(&g_epoll_set.cursor, 0);
+
+  return GRPC_ERROR_NONE;
+}
+
+static bool begin_worker(grpc_pollset* pollset, grpc_pollset_worker* worker,
+                         grpc_pollset_worker** worker_hdl,
+                         grpc_millis deadline) {
+  GPR_TIMER_SCOPE("begin_worker", 0);
+  if (worker_hdl != nullptr) *worker_hdl = worker;
+  worker->initialized_cv = false;
+  SET_KICK_STATE(worker, UNKICKED);
+  worker->schedule_on_end_work = (grpc_closure_list)GRPC_CLOSURE_LIST_INIT;
+  pollset->begin_refs++;
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PS:%p BEGIN_STARTS:%p", pollset, worker);
+  }
+
+  if (pollset->seen_inactive) {
+    // pollset has been observed to be inactive, we need to move back to the
+    // active list
+    bool is_reassigning = false;
+    if (!pollset->reassigning_neighborhood) {
+      is_reassigning = true;
+      pollset->reassigning_neighborhood = true;
+      pollset->neighborhood = &g_neighborhoods[choose_neighborhood()];
+    }
+    pollset_neighborhood* neighborhood = pollset->neighborhood;
+    gpr_mu_unlock(&pollset->mu);
+  // pollset unlocked: state may change (even worker->kick_state)
+  retry_lock_neighborhood:
+    gpr_mu_lock(&neighborhood->mu);
+    gpr_mu_lock(&pollset->mu);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, "PS:%p BEGIN_REORG:%p kick_state=%s is_reassigning=%d",
+              pollset, worker, kick_state_string(worker->state),
+              is_reassigning);
+    }
+    if (pollset->seen_inactive) {
+      if (neighborhood != pollset->neighborhood) {
+        gpr_mu_unlock(&neighborhood->mu);
+        neighborhood = pollset->neighborhood;
+        gpr_mu_unlock(&pollset->mu);
+        goto retry_lock_neighborhood;
+      }
+
+      /* In the brief time we released the pollset locks above, the worker MAY
+         have been kicked. In this case, the worker should get out of this
+         pollset ASAP and hence this should neither add the pollset to
+         neighborhood nor mark the pollset as active.
+
+         On a side note, the only way a worker's kick state could have changed
+         at this point is if it were "kicked specifically". Since the worker has
+         not added itself to the pollset yet (by calling worker_insert()), it is
+         not visible in the "kick any" path yet */
+      if (worker->state == UNKICKED) {
+        pollset->seen_inactive = false;
+        if (neighborhood->active_root == nullptr) {
+          neighborhood->active_root = pollset->next = pollset->prev = pollset;
+          /* Make this the designated poller if there isn't one already */
+          if (worker->state == UNKICKED &&
+              gpr_atm_no_barrier_cas(&g_active_poller, 0, (gpr_atm)worker)) {
+            SET_KICK_STATE(worker, DESIGNATED_POLLER);
+          }
+        } else {
+          pollset->next = neighborhood->active_root;
+          pollset->prev = pollset->next->prev;
+          pollset->next->prev = pollset->prev->next = pollset;
+        }
+      }
+    }
+    if (is_reassigning) {
+      GPR_ASSERT(pollset->reassigning_neighborhood);
+      pollset->reassigning_neighborhood = false;
+    }
+    gpr_mu_unlock(&neighborhood->mu);
+  }
+
+  worker_insert(pollset, worker);
+  pollset->begin_refs--;
+  if (worker->state == UNKICKED && !pollset->kicked_without_poller) {
+    GPR_ASSERT(gpr_atm_no_barrier_load(&g_active_poller) != (gpr_atm)worker);
+    worker->initialized_cv = true;
+    gpr_cv_init(&worker->cv);
+    while (worker->state == UNKICKED && !pollset->shutting_down) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, "PS:%p BEGIN_WAIT:%p kick_state=%s shutdown=%d",
+                pollset, worker, kick_state_string(worker->state),
+                pollset->shutting_down);
+      }
+
+      if (gpr_cv_wait(&worker->cv, &pollset->mu,
+                      grpc_millis_to_timespec(deadline, GPR_CLOCK_MONOTONIC)) &&
+          worker->state == UNKICKED) {
+        /* If gpr_cv_wait returns true (i.e a timeout), pretend that the worker
+           received a kick */
+        SET_KICK_STATE(worker, KICKED);
+      }
+    }
+    grpc_core::ExecCtx::Get()->InvalidateNow();
+  }
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO,
+            "PS:%p BEGIN_DONE:%p kick_state=%s shutdown=%d "
+            "kicked_without_poller: %d",
+            pollset, worker, kick_state_string(worker->state),
+            pollset->shutting_down, pollset->kicked_without_poller);
+  }
+
+  /* We release pollset lock in this function at a couple of places:
+   *   1. Briefly when assigning pollset to a neighborhood
+   *   2. When doing gpr_cv_wait()
+   * It is possible that 'kicked_without_poller' was set to true during (1) and
+   * 'shutting_down' is set to true during (1) or (2). If either of them is
+   * true, this worker cannot do polling */
+  /* TODO(sreek): Perhaps there is a better way to handle kicked_without_poller
+   * case; especially when the worker is the DESIGNATED_POLLER */
+
+  if (pollset->kicked_without_poller) {
+    pollset->kicked_without_poller = false;
+    return false;
+  }
+
+  return worker->state == DESIGNATED_POLLER && !pollset->shutting_down;
+}
+
+static bool check_neighborhood_for_available_poller(
+    pollset_neighborhood* neighborhood) {
+  GPR_TIMER_SCOPE("check_neighborhood_for_available_poller", 0);
+  bool found_worker = false;
+  do {
+    grpc_pollset* inspect = neighborhood->active_root;
+    if (inspect == nullptr) {
+      break;
+    }
+    gpr_mu_lock(&inspect->mu);
+    GPR_ASSERT(!inspect->seen_inactive);
+    grpc_pollset_worker* inspect_worker = inspect->root_worker;
+    if (inspect_worker != nullptr) {
+      do {
+        switch (inspect_worker->state) {
+          case UNKICKED:
+            if (gpr_atm_no_barrier_cas(&g_active_poller, 0,
+                                       (gpr_atm)inspect_worker)) {
+              if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+                gpr_log(GPR_INFO, " .. choose next poller to be %p",
+                        inspect_worker);
+              }
+              SET_KICK_STATE(inspect_worker, DESIGNATED_POLLER);
+              if (inspect_worker->initialized_cv) {
+                GPR_TIMER_MARK("signal worker", 0);
+                GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+                gpr_cv_signal(&inspect_worker->cv);
+              }
+            } else {
+              if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+                gpr_log(GPR_INFO, " .. beaten to choose next poller");
+              }
+            }
+            // even if we didn't win the cas, there's a worker, we can stop
+            found_worker = true;
+            break;
+          case KICKED:
+            break;
+          case DESIGNATED_POLLER:
+            found_worker = true;  // ok, so someone else found the worker, but
+                                  // we'll accept that
+            break;
+        }
+        inspect_worker = inspect_worker->next;
+      } while (!found_worker && inspect_worker != inspect->root_worker);
+    }
+    if (!found_worker) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, " .. mark pollset %p inactive", inspect);
+      }
+      inspect->seen_inactive = true;
+      if (inspect == neighborhood->active_root) {
+        neighborhood->active_root =
+            inspect->next == inspect ? nullptr : inspect->next;
+      }
+      inspect->next->prev = inspect->prev;
+      inspect->prev->next = inspect->next;
+      inspect->next = inspect->prev = nullptr;
+    }
+    gpr_mu_unlock(&inspect->mu);
+  } while (!found_worker);
+  return found_worker;
+}
+
+static void end_worker(grpc_pollset* pollset, grpc_pollset_worker* worker,
+                       grpc_pollset_worker** worker_hdl) {
+  GPR_TIMER_SCOPE("end_worker", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PS:%p END_WORKER:%p", pollset, worker);
+  }
+  if (worker_hdl != nullptr) *worker_hdl = nullptr;
+  /* Make sure we appear kicked */
+  SET_KICK_STATE(worker, KICKED);
+  grpc_closure_list_move(&worker->schedule_on_end_work,
+                         grpc_core::ExecCtx::Get()->closure_list());
+  if (gpr_atm_no_barrier_load(&g_active_poller) == (gpr_atm)worker) {
+    if (worker->next != worker && worker->next->state == UNKICKED) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, " .. choose next poller to be peer %p", worker);
+      }
+      GPR_ASSERT(worker->next->initialized_cv);
+      gpr_atm_no_barrier_store(&g_active_poller, (gpr_atm)worker->next);
+      SET_KICK_STATE(worker->next, DESIGNATED_POLLER);
+      GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+      gpr_cv_signal(&worker->next->cv);
+      if (grpc_core::ExecCtx::Get()->HasWork()) {
+        gpr_mu_unlock(&pollset->mu);
+        grpc_core::ExecCtx::Get()->Flush();
+        gpr_mu_lock(&pollset->mu);
+      }
+    } else {
+      gpr_atm_no_barrier_store(&g_active_poller, 0);
+      size_t poller_neighborhood_idx =
+          static_cast<size_t>(pollset->neighborhood - g_neighborhoods);
+      gpr_mu_unlock(&pollset->mu);
+      bool found_worker = false;
+      bool scan_state[MAX_NEIGHBORHOODS];
+      for (size_t i = 0; !found_worker && i < g_num_neighborhoods; i++) {
+        pollset_neighborhood* neighborhood =
+            &g_neighborhoods[(poller_neighborhood_idx + i) %
+                             g_num_neighborhoods];
+        if (gpr_mu_trylock(&neighborhood->mu)) {
+          found_worker = check_neighborhood_for_available_poller(neighborhood);
+          gpr_mu_unlock(&neighborhood->mu);
+          scan_state[i] = true;
+        } else {
+          scan_state[i] = false;
+        }
+      }
+      for (size_t i = 0; !found_worker && i < g_num_neighborhoods; i++) {
+        if (scan_state[i]) continue;
+        pollset_neighborhood* neighborhood =
+            &g_neighborhoods[(poller_neighborhood_idx + i) %
+                             g_num_neighborhoods];
+        gpr_mu_lock(&neighborhood->mu);
+        found_worker = check_neighborhood_for_available_poller(neighborhood);
+        gpr_mu_unlock(&neighborhood->mu);
+      }
+      grpc_core::ExecCtx::Get()->Flush();
+      gpr_mu_lock(&pollset->mu);
+    }
+  } else if (grpc_core::ExecCtx::Get()->HasWork()) {
+    gpr_mu_unlock(&pollset->mu);
+    grpc_core::ExecCtx::Get()->Flush();
+    gpr_mu_lock(&pollset->mu);
+  }
+  if (worker->initialized_cv) {
+    gpr_cv_destroy(&worker->cv);
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, " .. remove worker");
+  }
+  if (EMPTIED == worker_remove(pollset, worker)) {
+    pollset_maybe_finish_shutdown(pollset);
+  }
+  GPR_ASSERT(gpr_atm_no_barrier_load(&g_active_poller) != (gpr_atm)worker);
+}
+
+/* pollset->po.mu lock must be held by the caller before calling this.
+   The function pollset_work() may temporarily release the lock (pollset->po.mu)
+   during the course of its execution but it will always re-acquire the lock and
+   ensure that it is held by the time the function returns */
+static grpc_error* pollset_work(grpc_pollset* ps,
+                                grpc_pollset_worker** worker_hdl,
+                                grpc_millis deadline) {
+  GPR_TIMER_SCOPE("pollset_work", 0);
+  grpc_pollset_worker worker;
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "pollset_work";
+  if (ps->kicked_without_poller) {
+    ps->kicked_without_poller = false;
+    return GRPC_ERROR_NONE;
+  }
+
+  if (begin_worker(ps, &worker, worker_hdl, deadline)) {
+    gpr_tls_set(&g_current_thread_pollset, (intptr_t)ps);
+    gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
+    GPR_ASSERT(!ps->shutting_down);
+    GPR_ASSERT(!ps->seen_inactive);
+
+    gpr_mu_unlock(&ps->mu); /* unlock */
+    /* This is the designated polling thread at this point and should ideally do
+       polling. However, if there are unprocessed events left from a previous
+       call to do_epoll_wait(), skip calling epoll_wait() in this iteration and
+       process the pending epoll events.
+
+       The reason for decoupling do_epoll_wait and process_epoll_events is to
+       better distribute the work (i.e handling epoll events) across multiple
+       threads
+
+       process_epoll_events() returns very quickly: It just queues the work on
+       exec_ctx but does not execute it (the actual exectution or more
+       accurately grpc_core::ExecCtx::Get()->Flush() happens in end_worker()
+       AFTER selecting a designated poller). So we are not waiting long periods
+       without a designated poller */
+    if (gpr_atm_acq_load(&g_epoll_set.cursor) ==
+        gpr_atm_acq_load(&g_epoll_set.num_events)) {
+      append_error(&error, do_epoll_wait(ps, deadline), err_desc);
+    }
+    append_error(&error, process_epoll_events(ps), err_desc);
+
+    gpr_mu_lock(&ps->mu); /* lock */
+
+    gpr_tls_set(&g_current_thread_worker, 0);
+  } else {
+    gpr_tls_set(&g_current_thread_pollset, (intptr_t)ps);
+  }
+  end_worker(ps, &worker, worker_hdl);
+
+  gpr_tls_set(&g_current_thread_pollset, 0);
+  return error;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* pollset,
+                                grpc_pollset_worker* specific_worker) {
+  GPR_TIMER_SCOPE("pollset_kick", 0);
+  GRPC_STATS_INC_POLLSET_KICK();
+  grpc_error* ret_err = GRPC_ERROR_NONE;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_strvec log;
+    gpr_strvec_init(&log);
+    char* tmp;
+    gpr_asprintf(&tmp, "PS:%p KICK:%p curps=%p curworker=%p root=%p", pollset,
+                 specific_worker, (void*)gpr_tls_get(&g_current_thread_pollset),
+                 (void*)gpr_tls_get(&g_current_thread_worker),
+                 pollset->root_worker);
+    gpr_strvec_add(&log, tmp);
+    if (pollset->root_worker != nullptr) {
+      gpr_asprintf(&tmp, " {kick_state=%s next=%p {kick_state=%s}}",
+                   kick_state_string(pollset->root_worker->state),
+                   pollset->root_worker->next,
+                   kick_state_string(pollset->root_worker->next->state));
+      gpr_strvec_add(&log, tmp);
+    }
+    if (specific_worker != nullptr) {
+      gpr_asprintf(&tmp, " worker_kick_state=%s",
+                   kick_state_string(specific_worker->state));
+      gpr_strvec_add(&log, tmp);
+    }
+    tmp = gpr_strvec_flatten(&log, nullptr);
+    gpr_strvec_destroy(&log);
+    gpr_log(GPR_DEBUG, "%s", tmp);
+    gpr_free(tmp);
+  }
+
+  if (specific_worker == nullptr) {
+    if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)pollset) {
+      grpc_pollset_worker* root_worker = pollset->root_worker;
+      if (root_worker == nullptr) {
+        GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER();
+        pollset->kicked_without_poller = true;
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, " .. kicked_without_poller");
+        }
+        goto done;
+      }
+      grpc_pollset_worker* next_worker = root_worker->next;
+      if (root_worker->state == KICKED) {
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, " .. already kicked %p", root_worker);
+        }
+        SET_KICK_STATE(root_worker, KICKED);
+        goto done;
+      } else if (next_worker->state == KICKED) {
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, " .. already kicked %p", next_worker);
+        }
+        SET_KICK_STATE(next_worker, KICKED);
+        goto done;
+      } else if (root_worker ==
+                     next_worker &&  // only try and wake up a poller if
+                                     // there is no next worker
+                 root_worker == (grpc_pollset_worker*)gpr_atm_no_barrier_load(
+                                    &g_active_poller)) {
+        GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD();
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, " .. kicked %p", root_worker);
+        }
+        SET_KICK_STATE(root_worker, KICKED);
+        ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+        goto done;
+      } else if (next_worker->state == UNKICKED) {
+        GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, " .. kicked %p", next_worker);
+        }
+        GPR_ASSERT(next_worker->initialized_cv);
+        SET_KICK_STATE(next_worker, KICKED);
+        gpr_cv_signal(&next_worker->cv);
+        goto done;
+      } else if (next_worker->state == DESIGNATED_POLLER) {
+        if (root_worker->state != DESIGNATED_POLLER) {
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+            gpr_log(
+                GPR_INFO,
+                " .. kicked root non-poller %p (initialized_cv=%d) (poller=%p)",
+                root_worker, root_worker->initialized_cv, next_worker);
+          }
+          SET_KICK_STATE(root_worker, KICKED);
+          if (root_worker->initialized_cv) {
+            GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+            gpr_cv_signal(&root_worker->cv);
+          }
+          goto done;
+        } else {
+          GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD();
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+            gpr_log(GPR_INFO, " .. non-root poller %p (root=%p)", next_worker,
+                    root_worker);
+          }
+          SET_KICK_STATE(next_worker, KICKED);
+          ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+          goto done;
+        }
+      } else {
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+        GPR_ASSERT(next_worker->state == KICKED);
+        SET_KICK_STATE(next_worker, KICKED);
+        goto done;
+      }
+    } else {
+      GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD();
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, " .. kicked while waking up");
+      }
+      goto done;
+    }
+
+    GPR_UNREACHABLE_CODE(goto done);
+  }
+
+  if (specific_worker->state == KICKED) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, " .. specific worker already kicked");
+    }
+    goto done;
+  } else if (gpr_tls_get(&g_current_thread_worker) ==
+             (intptr_t)specific_worker) {
+    GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, " .. mark %p kicked", specific_worker);
+    }
+    SET_KICK_STATE(specific_worker, KICKED);
+    goto done;
+  } else if (specific_worker ==
+             (grpc_pollset_worker*)gpr_atm_no_barrier_load(&g_active_poller)) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, " .. kick active poller");
+    }
+    SET_KICK_STATE(specific_worker, KICKED);
+    ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+    goto done;
+  } else if (specific_worker->initialized_cv) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, " .. kick waiting worker");
+    }
+    SET_KICK_STATE(specific_worker, KICKED);
+    gpr_cv_signal(&specific_worker->cv);
+    goto done;
+  } else {
+    GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, " .. kick non-waiting worker");
+    }
+    SET_KICK_STATE(specific_worker, KICKED);
+    goto done;
+  }
+done:
+  return ret_err;
+}
+
+static void pollset_add_fd(grpc_pollset* /*pollset*/, grpc_fd* /*fd*/) {}
+
+/*******************************************************************************
+ * Pollset-set Definitions
+ */
+
+static grpc_pollset_set* pollset_set_create(void) {
+  return (grpc_pollset_set*)(static_cast<intptr_t>(0xdeafbeef));
+}
+
+static void pollset_set_destroy(grpc_pollset_set* /*pss*/) {}
+
+static void pollset_set_add_fd(grpc_pollset_set* /*pss*/, grpc_fd* /*fd*/) {}
+
+static void pollset_set_del_fd(grpc_pollset_set* /*pss*/, grpc_fd* /*fd*/) {}
+
+static void pollset_set_add_pollset(grpc_pollset_set* /*pss*/,
+                                    grpc_pollset* /*ps*/) {}
+
+static void pollset_set_del_pollset(grpc_pollset_set* /*pss*/,
+                                    grpc_pollset* /*ps*/) {}
+
+static void pollset_set_add_pollset_set(grpc_pollset_set* /*bag*/,
+                                        grpc_pollset_set* /*item*/) {}
+
+static void pollset_set_del_pollset_set(grpc_pollset_set* /*bag*/,
+                                        grpc_pollset_set* /*item*/) {}
+
+/*******************************************************************************
+ * Event engine binding
+ */
+
+static bool is_any_background_poller_thread(void) { return false; }
+
+static void shutdown_background_closure(void) {}
+
+static bool add_closure_to_background_poller(grpc_closure* /*closure*/,
+                                             grpc_error* /*error*/) {
+  return false;
+}
+
+static void shutdown_engine(void) {
+  fd_global_shutdown();
+  pollset_global_shutdown();
+  epoll_set_shutdown();
+  if (grpc_core::Fork::Enabled()) {
+    gpr_mu_destroy(&fork_fd_list_mu);
+    grpc_core::Fork::SetResetChildPollingEngineFunc(nullptr);
+  }
+}
+
+static const grpc_event_engine_vtable vtable = {
+    sizeof(grpc_pollset),
+    true,
+    false,
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_notify_on_error,
+    fd_become_readable,
+    fd_become_writable,
+    fd_has_errors,
+    fd_is_shutdown,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    is_any_background_poller_thread,
+    shutdown_background_closure,
+    shutdown_engine,
+    add_closure_to_background_poller,
+};
+
+/* Called by the child process's post-fork handler to close open fds, including
+ * the global epoll fd. This allows gRPC to shutdown in the child process
+ * without interfering with connections or RPCs ongoing in the parent. */
+static void reset_event_manager_on_fork() {
+  gpr_mu_lock(&fork_fd_list_mu);
+  while (fork_fd_list_head != nullptr) {
+    close(fork_fd_list_head->fd);
+    fork_fd_list_head->fd = -1;
+    fork_fd_list_head = fork_fd_list_head->fork_fd_list->next;
+  }
+  gpr_mu_unlock(&fork_fd_list_mu);
+  shutdown_engine();
+  grpc_init_epoll1_linux(true);
+}
+
+/* It is possible that GLIBC has epoll but the underlying kernel doesn't.
+ * Create epoll_fd (epoll_set_init() takes care of that) to make sure epoll
+ * support is available */
+const grpc_event_engine_vtable* grpc_init_epoll1_linux(
+    bool /*explicit_request*/) {
+  if (!grpc_has_wakeup_fd()) {
+    gpr_log(GPR_ERROR, "Skipping epoll1 because of no wakeup fd.");
+    return nullptr;
+  }
+
+  if (!epoll_set_init()) {
+    return nullptr;
+  }
+
+  fd_global_init();
+
+  if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
+    fd_global_shutdown();
+    epoll_set_shutdown();
+    return nullptr;
+  }
+
+  if (grpc_core::Fork::Enabled()) {
+    gpr_mu_init(&fork_fd_list_mu);
+    grpc_core::Fork::SetResetChildPollingEngineFunc(
+        reset_event_manager_on_fork);
+  }
+  return &vtable;
+}
+
+#else /* defined(GRPC_LINUX_EPOLL) */
+#if defined(GRPC_POSIX_SOCKET_EV_EPOLL1)
+#include "src/core/lib/iomgr/ev_epoll1_linux.h"
+/* If GRPC_LINUX_EPOLL is not defined, it means epoll is not available. Return
+ * NULL */
+const grpc_event_engine_vtable* grpc_init_epoll1_linux(
+    bool /*explicit_request*/) {
+  return nullptr;
+}
+#endif /* defined(GRPC_POSIX_SOCKET_EV_EPOLL1) */
+#endif /* !defined(GRPC_LINUX_EPOLL) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.h
new file mode 100644
index 0000000..ca0db72
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epoll1_linux.h	
@@ -0,0 +1,31 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H
+#define GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/port.h"
+
+// a polling engine that utilizes a singleton epoll set and turnstile polling
+
+const grpc_event_engine_vtable* grpc_init_epoll1_linux(bool explicit_request);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLL1_LINUX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.cc
new file mode 100644
index 0000000..f2fab7c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.cc	
@@ -0,0 +1,1657 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/log.h>
+
+/* This polling engine is only relevant on linux kernels supporting epoll() */
+#ifdef GRPC_LINUX_EPOLL_CREATE1
+
+#include "src/core/lib/iomgr/ev_epollex_linux.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <poll.h>
+#include <pthread.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <sys/socket.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "absl/container/inlined_vector.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/is_epollexclusive_available.h"
+#include "src/core/lib/iomgr/lockfree_event.h"
+#include "src/core/lib/iomgr/sys_epoll_wrapper.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+
+// debug aid: create workers on the heap (allows asan to spot
+// use-after-destruction)
+//#define GRPC_EPOLLEX_CREATE_WORKERS_ON_HEAP 1
+
+#define MAX_EPOLL_EVENTS 100
+// TODO(juanlishen): We use a greater-than-one value here as a workaround fix to
+// a keepalive ping timeout issue. We may want to revert https://github
+// .com/grpc/grpc/pull/14943 once we figure out the root cause.
+#define MAX_EPOLL_EVENTS_HANDLED_EACH_POLL_CALL 16
+#define MAX_FDS_IN_CACHE 32
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_pollable_refcount(false,
+                                                           "pollable_refcount");
+
+/*******************************************************************************
+ * pollable Declarations
+ */
+
+typedef enum { PO_MULTI, PO_FD, PO_EMPTY } pollable_type;
+
+typedef struct pollable pollable;
+
+/// A pollable is something that can be polled: it has an epoll set to poll on,
+/// and a wakeup fd for kicks
+/// There are three broad types:
+///  - PO_EMPTY - the empty pollable, used before file descriptors are added to
+///               a pollset
+///  - PO_FD - a pollable containing only one FD - used to optimize single-fd
+///            pollsets (which are common with synchronous api usage)
+///  - PO_MULTI - a pollable containing many fds
+struct pollable {
+  pollable_type type;  // immutable
+  grpc_core::RefCount refs;
+
+  int epfd;
+  grpc_wakeup_fd wakeup;
+
+  // The following are relevant only for type PO_FD
+  grpc_fd* owner_fd;       // Set to the owner_fd if the type is PO_FD
+  gpr_mu owner_orphan_mu;  // Synchronizes access to owner_orphaned field
+  bool owner_orphaned;     // Is the owner fd orphaned
+
+  grpc_pollset_set* pollset_set;
+  pollable* next;
+  pollable* prev;
+
+  gpr_mu mu;
+  grpc_pollset_worker* root_worker;
+
+  int event_cursor;
+  int event_count;
+  struct epoll_event events[MAX_EPOLL_EVENTS];
+};
+
+static const char* pollable_type_string(pollable_type t) {
+  switch (t) {
+    case PO_MULTI:
+      return "pollset";
+    case PO_FD:
+      return "fd";
+    case PO_EMPTY:
+      return "empty";
+  }
+  return "<invalid>";
+}
+
+static char* pollable_desc(pollable* p) {
+  char* out;
+  gpr_asprintf(&out, "type=%s epfd=%d wakeup=%d", pollable_type_string(p->type),
+               p->epfd, p->wakeup.read_fd);
+  return out;
+}
+
+/// Shared empty pollable - used by pollset to poll on until the first fd is
+/// added
+static pollable* g_empty_pollable;
+
+static grpc_error* pollable_create(pollable_type type, pollable** p);
+static pollable* pollable_ref(pollable* p,
+                              const grpc_core::DebugLocation& dbg_loc,
+                              const char* reason) {
+  p->refs.Ref(dbg_loc, reason);
+  return p;
+}
+static void pollable_unref(pollable* p, const grpc_core::DebugLocation& dbg_loc,
+                           const char* reason) {
+  if (p == nullptr) return;
+  if (GPR_UNLIKELY(p != nullptr && p->refs.Unref(dbg_loc, reason))) {
+    GRPC_FD_TRACE("pollable_unref: Closing epfd: %d", p->epfd);
+    close(p->epfd);
+    grpc_wakeup_fd_destroy(&p->wakeup);
+    gpr_mu_destroy(&p->owner_orphan_mu);
+    gpr_mu_destroy(&p->mu);
+    gpr_free(p);
+  }
+}
+#define POLLABLE_REF(p, r) pollable_ref((p), DEBUG_LOCATION, (r))
+#define POLLABLE_UNREF(p, r) pollable_unref((p), DEBUG_LOCATION, (r))
+
+/*******************************************************************************
+ * Fd Declarations
+ */
+
+struct grpc_fd {
+  grpc_fd(int fd, const char* name, bool track_err)
+      : fd(fd), track_err(track_err) {
+    gpr_mu_init(&orphan_mu);
+    gpr_mu_init(&pollable_mu);
+    read_closure.InitEvent();
+    write_closure.InitEvent();
+    error_closure.InitEvent();
+
+    char* fd_name;
+    gpr_asprintf(&fd_name, "%s fd=%d", name, fd);
+    grpc_iomgr_register_object(&iomgr_object, fd_name);
+#ifndef NDEBUG
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+      gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, this, fd_name);
+    }
+#endif
+    gpr_free(fd_name);
+  }
+
+  // This is really the dtor, but the poller threads waking up from
+  // epoll_wait() may access the (read|write|error)_closure after destruction.
+  // Since the object will be added to the free pool, this behavior is
+  // not going to cause issues, except spurious events if the FD is reused
+  // while the race happens.
+  void destroy() {
+    grpc_iomgr_unregister_object(&iomgr_object);
+
+    POLLABLE_UNREF(pollable_obj, "fd_pollable");
+
+    // To clear out the allocations of pollset_fds, we need to swap its
+    // contents with a newly-constructed (and soon to be destructed) local
+    // variable of its same type. This is because InlinedVector::clear is _not_
+    // guaranteed to actually free up allocations and this is important since
+    // this object doesn't have a conventional destructor.
+    absl::InlinedVector<int, 1> pollset_fds_tmp;
+    pollset_fds_tmp.swap(pollset_fds);
+
+    gpr_mu_destroy(&pollable_mu);
+    gpr_mu_destroy(&orphan_mu);
+
+    read_closure.DestroyEvent();
+    write_closure.DestroyEvent();
+    error_closure.DestroyEvent();
+
+    invalidate();
+  }
+
+#ifndef NDEBUG
+  /* Since an fd is never really destroyed (i.e gpr_free() is not called), it is
+   * hard-to-debug cases where fd fields are accessed even after calling
+   * fd_destroy(). The following invalidates fd fields to make catching such
+   * errors easier */
+  void invalidate() {
+    fd = -1;
+    gpr_atm_no_barrier_store(&refst, -1);
+    memset(&orphan_mu, -1, sizeof(orphan_mu));
+    memset(&pollable_mu, -1, sizeof(pollable_mu));
+    pollable_obj = nullptr;
+    on_done_closure = nullptr;
+    memset(&iomgr_object, -1, sizeof(iomgr_object));
+    track_err = false;
+  }
+#else
+  void invalidate() {}
+#endif
+
+  int fd;
+
+  // refst format:
+  //     bit 0    : 1=Active / 0=Orphaned
+  //     bits 1-n : refcount
+  //  Ref/Unref by two to avoid altering the orphaned bit
+  gpr_atm refst = 1;
+
+  gpr_mu orphan_mu;
+
+  // Protects pollable_obj and pollset_fds.
+  gpr_mu pollable_mu;
+  absl::InlinedVector<int, 1> pollset_fds;  // Used in PO_MULTI.
+  pollable* pollable_obj = nullptr;         // Used in PO_FD.
+
+  grpc_core::LockfreeEvent read_closure;
+  grpc_core::LockfreeEvent write_closure;
+  grpc_core::LockfreeEvent error_closure;
+
+  struct grpc_fd* freelist_next = nullptr;
+  grpc_closure* on_done_closure = nullptr;
+
+  grpc_iomgr_object iomgr_object;
+
+  // Do we need to track EPOLLERR events separately?
+  bool track_err;
+};
+
+static void fd_global_init(void);
+static void fd_global_shutdown(void);
+
+/*******************************************************************************
+ * Pollset Declarations
+ */
+
+typedef struct {
+  grpc_pollset_worker* next;
+  grpc_pollset_worker* prev;
+} pwlink;
+
+typedef enum { PWLINK_POLLABLE = 0, PWLINK_POLLSET, PWLINK_COUNT } pwlinks;
+
+struct grpc_pollset_worker {
+  bool kicked;
+  bool initialized_cv;
+#ifndef NDEBUG
+  // debug aid: which thread started this worker
+  pid_t originator;
+#endif
+  gpr_cv cv;
+  grpc_pollset* pollset;
+  pollable* pollable_obj;
+
+  pwlink links[PWLINK_COUNT];
+};
+
+struct grpc_pollset {
+  gpr_mu mu;
+  gpr_atm worker_count;
+  gpr_atm active_pollable_type;
+  pollable* active_pollable;
+  bool kicked_without_poller;
+  grpc_closure* shutdown_closure;
+  bool already_shutdown;
+  grpc_pollset_worker* root_worker;
+  int containing_pollset_set_count;
+};
+
+/*******************************************************************************
+ * Pollset-set Declarations
+ */
+
+struct grpc_pollset_set {
+  grpc_core::RefCount refs;
+  gpr_mu mu;
+  grpc_pollset_set* parent;
+
+  size_t pollset_count;
+  size_t pollset_capacity;
+  grpc_pollset** pollsets;
+
+  size_t fd_count;
+  size_t fd_capacity;
+  grpc_fd** fds;
+};
+
+/*******************************************************************************
+ * Common helpers
+ */
+
+static bool append_error(grpc_error** composite, grpc_error* error,
+                         const char* desc) {
+  if (error == GRPC_ERROR_NONE) return true;
+  if (*composite == GRPC_ERROR_NONE) {
+    *composite = GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc);
+  }
+  *composite = grpc_error_add_child(*composite, error);
+  return false;
+}
+
+/*******************************************************************************
+ * Fd Definitions
+ */
+
+/* We need to keep a freelist not because of any concerns of malloc performance
+ * but instead so that implementations with multiple threads in (for example)
+ * epoll_wait deal with the race between pollset removal and incoming poll
+ * notifications.
+ *
+ * The problem is that the poller ultimately holds a reference to this
+ * object, so it is very difficult to know when is safe to free it, at least
+ * without some expensive synchronization.
+ *
+ * If we keep the object freelisted, in the worst case losing this race just
+ * becomes a spurious read notification on a reused fd.
+ */
+
+static grpc_fd* fd_freelist = nullptr;
+static gpr_mu fd_freelist_mu;
+
+#ifndef NDEBUG
+#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__)
+#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__)
+static void ref_by(grpc_fd* fd, int n, const char* reason, const char* file,
+                   int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+    gpr_log(GPR_DEBUG,
+            "FD %d %p   ref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
+            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
+            gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line);
+  }
+#else
+#define REF_BY(fd, n, reason) \
+  do {                        \
+    ref_by(fd, n);            \
+    (void)(reason);           \
+  } while (0)
+#define UNREF_BY(fd, n, reason) \
+  do {                          \
+    unref_by(fd, n);            \
+    (void)(reason);             \
+  } while (0)
+static void ref_by(grpc_fd* fd, int n) {
+#endif
+  GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0);
+}
+
+/* Uninitialize and add to the freelist */
+static void fd_destroy(void* arg, grpc_error* /*error*/) {
+  grpc_fd* fd = static_cast<grpc_fd*>(arg);
+  fd->destroy();
+
+  /* Add the fd to the freelist */
+  gpr_mu_lock(&fd_freelist_mu);
+  fd->freelist_next = fd_freelist;
+  fd_freelist = fd;
+  gpr_mu_unlock(&fd_freelist_mu);
+}
+
+#ifndef NDEBUG
+static void unref_by(grpc_fd* fd, int n, const char* reason, const char* file,
+                     int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+    gpr_log(GPR_DEBUG,
+            "FD %d %p unref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
+            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
+            gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line);
+  }
+#else
+static void unref_by(grpc_fd* fd, int n) {
+#endif
+  gpr_atm old = gpr_atm_full_fetch_add(&fd->refst, -n);
+  if (old == n) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        GRPC_CLOSURE_CREATE(fd_destroy, fd, grpc_schedule_on_exec_ctx),
+        GRPC_ERROR_NONE);
+  } else {
+    GPR_ASSERT(old > n);
+  }
+}
+
+static void fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); }
+
+static void fd_global_shutdown(void) {
+  // TODO(guantaol): We don't have a reasonable explanation about this
+  // lock()/unlock() pattern. It can be a valid barrier if there is at most one
+  // pending lock() at this point. Otherwise, there is still a possibility of
+  // use-after-free race. Need to reason about the code and/or clean it up.
+  gpr_mu_lock(&fd_freelist_mu);
+  gpr_mu_unlock(&fd_freelist_mu);
+  while (fd_freelist != nullptr) {
+    grpc_fd* fd = fd_freelist;
+    fd_freelist = fd_freelist->freelist_next;
+    gpr_free(fd);
+  }
+  gpr_mu_destroy(&fd_freelist_mu);
+}
+
+static grpc_fd* fd_create(int fd, const char* name, bool track_err) {
+  grpc_fd* new_fd = nullptr;
+
+  gpr_mu_lock(&fd_freelist_mu);
+  if (fd_freelist != nullptr) {
+    new_fd = fd_freelist;
+    fd_freelist = fd_freelist->freelist_next;
+  }
+  gpr_mu_unlock(&fd_freelist_mu);
+
+  if (new_fd == nullptr) {
+    new_fd = static_cast<grpc_fd*>(gpr_malloc(sizeof(grpc_fd)));
+  }
+
+  return new (new_fd) grpc_fd(fd, name, track_err);
+}
+
+static int fd_wrapped_fd(grpc_fd* fd) {
+  int ret_fd = fd->fd;
+  return (gpr_atm_acq_load(&fd->refst) & 1) ? ret_fd : -1;
+}
+
+static void fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                      const char* reason) {
+  bool is_fd_closed = false;
+
+  gpr_mu_lock(&fd->orphan_mu);
+
+  // Get the fd->pollable_obj and set the owner_orphaned on that pollable to
+  // true so that the pollable will no longer access its owner_fd field.
+  gpr_mu_lock(&fd->pollable_mu);
+  pollable* pollable_obj = fd->pollable_obj;
+
+  if (pollable_obj) {
+    gpr_mu_lock(&pollable_obj->owner_orphan_mu);
+    pollable_obj->owner_orphaned = true;
+  }
+
+  fd->on_done_closure = on_done;
+
+  /* If release_fd is not NULL, we should be relinquishing control of the file
+     descriptor fd->fd (but we still own the grpc_fd structure). */
+  if (release_fd != nullptr) {
+    // Remove the FD from all epolls sets, before releasing it.
+    // Otherwise, we will receive epoll events after we release the FD.
+    epoll_event ev_fd;
+    memset(&ev_fd, 0, sizeof(ev_fd));
+    if (pollable_obj != nullptr) {  // For PO_FD.
+      epoll_ctl(pollable_obj->epfd, EPOLL_CTL_DEL, fd->fd, &ev_fd);
+    }
+    for (size_t i = 0; i < fd->pollset_fds.size(); ++i) {  // For PO_MULTI.
+      const int epfd = fd->pollset_fds[i];
+      epoll_ctl(epfd, EPOLL_CTL_DEL, fd->fd, &ev_fd);
+    }
+    *release_fd = fd->fd;
+  } else {
+    close(fd->fd);
+    is_fd_closed = true;
+  }
+
+  // TODO(sreek): handle fd removal (where is_fd_closed=false)
+  if (!is_fd_closed) {
+    GRPC_FD_TRACE("epoll_fd %p (%d) was orphaned but not closed.", fd, fd->fd);
+  }
+
+  /* Remove the active status but keep referenced. We want this grpc_fd struct
+     to be alive (and not added to freelist) until the end of this function */
+  REF_BY(fd, 1, reason);
+
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, fd->on_done_closure, GRPC_ERROR_NONE);
+
+  if (pollable_obj) {
+    gpr_mu_unlock(&pollable_obj->owner_orphan_mu);
+  }
+
+  gpr_mu_unlock(&fd->pollable_mu);
+  gpr_mu_unlock(&fd->orphan_mu);
+
+  UNREF_BY(fd, 2, reason); /* Drop the reference */
+}
+
+static bool fd_is_shutdown(grpc_fd* fd) {
+  return fd->read_closure.IsShutdown();
+}
+
+/* Might be called multiple times */
+static void fd_shutdown(grpc_fd* fd, grpc_error* why) {
+  if (fd->read_closure.SetShutdown(GRPC_ERROR_REF(why))) {
+    if (shutdown(fd->fd, SHUT_RDWR)) {
+      if (errno != ENOTCONN) {
+        gpr_log(GPR_ERROR, "Error shutting down fd %d. errno: %d",
+                grpc_fd_wrapped_fd(fd), errno);
+      }
+    }
+    fd->write_closure.SetShutdown(GRPC_ERROR_REF(why));
+    fd->error_closure.SetShutdown(GRPC_ERROR_REF(why));
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+static void fd_notify_on_read(grpc_fd* fd, grpc_closure* closure) {
+  fd->read_closure.NotifyOn(closure);
+}
+
+static void fd_notify_on_write(grpc_fd* fd, grpc_closure* closure) {
+  fd->write_closure.NotifyOn(closure);
+}
+
+static void fd_notify_on_error(grpc_fd* fd, grpc_closure* closure) {
+  fd->error_closure.NotifyOn(closure);
+}
+
+static bool fd_has_pollset(grpc_fd* fd, grpc_pollset* pollset) {
+  const int epfd = pollset->active_pollable->epfd;
+  grpc_core::MutexLock lock(&fd->pollable_mu);
+  for (size_t i = 0; i < fd->pollset_fds.size(); ++i) {
+    if (fd->pollset_fds[i] == epfd) {
+      return true;
+    }
+  }
+  return false;
+}
+
+static void fd_add_pollset(grpc_fd* fd, grpc_pollset* pollset) {
+  const int epfd = pollset->active_pollable->epfd;
+  grpc_core::MutexLock lock(&fd->pollable_mu);
+  fd->pollset_fds.push_back(epfd);
+}
+
+/*******************************************************************************
+ * Pollable Definitions
+ */
+
+static grpc_error* pollable_create(pollable_type type, pollable** p) {
+  *p = nullptr;
+
+  int epfd = epoll_create1(EPOLL_CLOEXEC);
+  if (epfd == -1) {
+    return GRPC_OS_ERROR(errno, "epoll_create1");
+  }
+  GRPC_FD_TRACE("Pollable_create: created epfd: %d (type: %d)", epfd, type);
+  *p = static_cast<pollable*>(gpr_malloc(sizeof(**p)));
+  grpc_error* err = grpc_wakeup_fd_init(&(*p)->wakeup);
+  if (err != GRPC_ERROR_NONE) {
+    GRPC_FD_TRACE(
+        "Pollable_create: closed epfd: %d (type: %d). wakeupfd_init error",
+        epfd, type);
+    close(epfd);
+    gpr_free(*p);
+    *p = nullptr;
+    return err;
+  }
+  struct epoll_event ev;
+  ev.events = static_cast<uint32_t>(EPOLLIN | EPOLLET);
+  ev.data.ptr = (void*)(1 | (intptr_t) & (*p)->wakeup);
+  if (epoll_ctl(epfd, EPOLL_CTL_ADD, (*p)->wakeup.read_fd, &ev) != 0) {
+    err = GRPC_OS_ERROR(errno, "epoll_ctl");
+    GRPC_FD_TRACE(
+        "Pollable_create: closed epfd: %d (type: %d). epoll_ctl error", epfd,
+        type);
+    close(epfd);
+    grpc_wakeup_fd_destroy(&(*p)->wakeup);
+    gpr_free(*p);
+    *p = nullptr;
+    return err;
+  }
+
+  (*p)->type = type;
+  new (&(*p)->refs) grpc_core::RefCount(1, &grpc_trace_pollable_refcount);
+  gpr_mu_init(&(*p)->mu);
+  (*p)->epfd = epfd;
+  (*p)->owner_fd = nullptr;
+  gpr_mu_init(&(*p)->owner_orphan_mu);
+  (*p)->owner_orphaned = false;
+  (*p)->pollset_set = nullptr;
+  (*p)->next = (*p)->prev = *p;
+  (*p)->root_worker = nullptr;
+  (*p)->event_cursor = 0;
+  (*p)->event_count = 0;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* pollable_add_fd(pollable* p, grpc_fd* fd) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "pollable_add_fd";
+  const int epfd = p->epfd;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "add fd %p (%d) to pollable %p", fd, fd->fd, p);
+  }
+
+  struct epoll_event ev_fd;
+  ev_fd.events =
+      static_cast<uint32_t>(EPOLLET | EPOLLIN | EPOLLOUT | EPOLLEXCLUSIVE);
+  /* Use the second least significant bit of ev_fd.data.ptr to store track_err
+   * to avoid synchronization issues when accessing it after receiving an event.
+   * Accessing fd would be a data race there because the fd might have been
+   * returned to the free list at that point. */
+  ev_fd.data.ptr = reinterpret_cast<void*>(reinterpret_cast<intptr_t>(fd) |
+                                           (fd->track_err ? 2 : 0));
+  GRPC_STATS_INC_SYSCALL_EPOLL_CTL();
+  if (epoll_ctl(epfd, EPOLL_CTL_ADD, fd->fd, &ev_fd) != 0) {
+    switch (errno) {
+      case EEXIST:
+        break;
+      default:
+        append_error(&error, GRPC_OS_ERROR(errno, "epoll_ctl"), err_desc);
+    }
+  }
+
+  return error;
+}
+
+/*******************************************************************************
+ * Pollset Definitions
+ */
+
+GPR_TLS_DECL(g_current_thread_pollset);
+GPR_TLS_DECL(g_current_thread_worker);
+
+/* Global state management */
+static grpc_error* pollset_global_init(void) {
+  gpr_tls_init(&g_current_thread_pollset);
+  gpr_tls_init(&g_current_thread_worker);
+  return pollable_create(PO_EMPTY, &g_empty_pollable);
+}
+
+static void pollset_global_shutdown(void) {
+  POLLABLE_UNREF(g_empty_pollable, "g_empty_pollable");
+  gpr_tls_destroy(&g_current_thread_pollset);
+  gpr_tls_destroy(&g_current_thread_worker);
+}
+
+/* pollset->mu must be held while calling this function */
+static void pollset_maybe_finish_shutdown(grpc_pollset* pollset) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO,
+            "PS:%p (pollable:%p) maybe_finish_shutdown sc=%p (target:!NULL) "
+            "rw=%p (target:NULL) cpsc=%d (target:0)",
+            pollset, pollset->active_pollable, pollset->shutdown_closure,
+            pollset->root_worker, pollset->containing_pollset_set_count);
+  }
+  if (pollset->shutdown_closure != nullptr && pollset->root_worker == nullptr &&
+      pollset->containing_pollset_set_count == 0) {
+    GPR_TIMER_MARK("pollset_finish_shutdown", 0);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, pollset->shutdown_closure,
+                            GRPC_ERROR_NONE);
+    pollset->shutdown_closure = nullptr;
+    pollset->already_shutdown = true;
+  }
+}
+
+/* pollset->mu must be held before calling this function,
+ * pollset->active_pollable->mu & specific_worker->pollable_obj->mu must not be
+ * held */
+static grpc_error* kick_one_worker(grpc_pollset_worker* specific_worker) {
+  GPR_TIMER_SCOPE("kick_one_worker", 0);
+  pollable* p = specific_worker->pollable_obj;
+  grpc_core::MutexLock lock(&p->mu);
+  GPR_ASSERT(specific_worker != nullptr);
+  if (specific_worker->kicked) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, "PS:%p kicked_specific_but_already_kicked", p);
+    }
+    GRPC_STATS_INC_POLLSET_KICKED_AGAIN();
+    return GRPC_ERROR_NONE;
+  }
+  if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, "PS:%p kicked_specific_but_awake", p);
+    }
+    GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD();
+    specific_worker->kicked = true;
+    return GRPC_ERROR_NONE;
+  }
+  if (specific_worker == p->root_worker) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, "PS:%p kicked_specific_via_wakeup_fd", p);
+    }
+    specific_worker->kicked = true;
+    grpc_error* error = grpc_wakeup_fd_wakeup(&p->wakeup);
+    return error;
+  }
+  if (specific_worker->initialized_cv) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV();
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_INFO, "PS:%p kicked_specific_via_cv", p);
+    }
+    specific_worker->kicked = true;
+    gpr_cv_signal(&specific_worker->cv);
+    return GRPC_ERROR_NONE;
+  }
+  // we can get here during end_worker after removing specific_worker from the
+  // pollable list but before removing it from the pollset list
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* pollset,
+                                grpc_pollset_worker* specific_worker) {
+  GPR_TIMER_SCOPE("pollset_kick", 0);
+  GRPC_STATS_INC_POLLSET_KICK();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO,
+            "PS:%p kick %p tls_pollset=%p tls_worker=%p pollset.root_worker=%p",
+            pollset, specific_worker,
+            (void*)gpr_tls_get(&g_current_thread_pollset),
+            (void*)gpr_tls_get(&g_current_thread_worker), pollset->root_worker);
+  }
+  if (specific_worker == nullptr) {
+    if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)pollset) {
+      if (pollset->root_worker == nullptr) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, "PS:%p kicked_any_without_poller", pollset);
+        }
+        GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER();
+        pollset->kicked_without_poller = true;
+        return GRPC_ERROR_NONE;
+      } else {
+        // We've been asked to kick a poller, but we haven't been told which one
+        // ... any will do
+        // We look at the pollset worker list because:
+        // 1. the pollable list may include workers from other pollers, so we'd
+        //    need to do an O(N) search
+        // 2. we'd additionally need to take the pollable lock, which we've so
+        //    far avoided
+        // Now, we would prefer to wake a poller in cv_wait, and not in
+        // epoll_wait (since the latter would imply the need to do an additional
+        // wakeup)
+        // We know that if a worker is at the root of a pollable, it's (likely)
+        // also the root of a pollset, and we know that if a worker is NOT at
+        // the root of a pollset, it's (likely) not at the root of a pollable,
+        // so we take our chances and choose the SECOND worker enqueued against
+        // the pollset as a worker that's likely to be in cv_wait
+        return kick_one_worker(
+            pollset->root_worker->links[PWLINK_POLLSET].next);
+      }
+    } else {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, "PS:%p kicked_any_but_awake", pollset);
+      }
+      GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD();
+      return GRPC_ERROR_NONE;
+    }
+  } else {
+    return kick_one_worker(specific_worker);
+  }
+}
+
+static grpc_error* pollset_kick_all(grpc_pollset* pollset) {
+  GPR_TIMER_SCOPE("pollset_kick_all", 0);
+  grpc_error* error = GRPC_ERROR_NONE;
+  const char* err_desc = "pollset_kick_all";
+  grpc_pollset_worker* w = pollset->root_worker;
+  if (w != nullptr) {
+    do {
+      GRPC_STATS_INC_POLLSET_KICK();
+      append_error(&error, kick_one_worker(w), err_desc);
+      w = w->links[PWLINK_POLLSET].next;
+    } while (w != pollset->root_worker);
+  }
+  return error;
+}
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  gpr_mu_init(&pollset->mu);
+  gpr_atm_no_barrier_store(&pollset->worker_count, 0);
+  gpr_atm_no_barrier_store(&pollset->active_pollable_type, PO_EMPTY);
+  pollset->active_pollable = POLLABLE_REF(g_empty_pollable, "pollset");
+  pollset->kicked_without_poller = false;
+  pollset->shutdown_closure = nullptr;
+  pollset->already_shutdown = false;
+  pollset->root_worker = nullptr;
+  pollset->containing_pollset_set_count = 0;
+  *mu = &pollset->mu;
+}
+
+static int poll_deadline_to_millis_timeout(grpc_millis millis) {
+  if (millis == GRPC_MILLIS_INF_FUTURE) return -1;
+  grpc_millis delta = millis - grpc_core::ExecCtx::Get()->Now();
+  if (delta > INT_MAX)
+    return INT_MAX;
+  else if (delta < 0)
+    return 0;
+  else
+    return static_cast<int>(delta);
+}
+
+static void fd_become_readable(grpc_fd* fd) { fd->read_closure.SetReady(); }
+
+static void fd_become_writable(grpc_fd* fd) { fd->write_closure.SetReady(); }
+
+static void fd_has_errors(grpc_fd* fd) { fd->error_closure.SetReady(); }
+
+/* Get the pollable_obj attached to this fd. If none is attached, create a new
+ * pollable object (of type PO_FD), attach it to the fd and return it
+ *
+ * Note that if a pollable object is already attached to the fd, it may be of
+ * either PO_FD or PO_MULTI type */
+static grpc_error* get_fd_pollable(grpc_fd* fd, pollable** p) {
+  gpr_mu_lock(&fd->pollable_mu);
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "get_fd_pollable";
+  if (fd->pollable_obj == nullptr) {
+    if (append_error(&error, pollable_create(PO_FD, &fd->pollable_obj),
+                     err_desc)) {
+      fd->pollable_obj->owner_fd = fd;
+      if (!append_error(&error, pollable_add_fd(fd->pollable_obj, fd),
+                        err_desc)) {
+        POLLABLE_UNREF(fd->pollable_obj, "fd_pollable");
+        fd->pollable_obj = nullptr;
+      }
+    }
+  }
+  if (error == GRPC_ERROR_NONE) {
+    GPR_ASSERT(fd->pollable_obj != nullptr);
+    *p = POLLABLE_REF(fd->pollable_obj, "pollset");
+  } else {
+    GPR_ASSERT(fd->pollable_obj == nullptr);
+    *p = nullptr;
+  }
+  gpr_mu_unlock(&fd->pollable_mu);
+  return error;
+}
+
+/* pollset->po.mu lock must be held by the caller before calling this */
+static void pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  GPR_TIMER_SCOPE("pollset_shutdown", 0);
+  GPR_ASSERT(pollset->shutdown_closure == nullptr);
+  pollset->shutdown_closure = closure;
+  GRPC_LOG_IF_ERROR("pollset_shutdown", pollset_kick_all(pollset));
+  pollset_maybe_finish_shutdown(pollset);
+}
+
+static grpc_error* pollable_process_events(grpc_pollset* pollset,
+                                           pollable* pollable_obj, bool drain) {
+  GPR_TIMER_SCOPE("pollable_process_events", 0);
+  static const char* err_desc = "pollset_process_events";
+  // Use a simple heuristic to determine how many fd events to process
+  // per loop iteration.  (events/workers)
+  int handle_count = 1;
+  int worker_count = gpr_atm_no_barrier_load(&pollset->worker_count);
+  GPR_ASSERT(worker_count > 0);
+  handle_count =
+      (pollable_obj->event_count - pollable_obj->event_cursor) / worker_count;
+  if (handle_count == 0) {
+    handle_count = 1;
+  } else if (handle_count > MAX_EPOLL_EVENTS_HANDLED_EACH_POLL_CALL) {
+    handle_count = MAX_EPOLL_EVENTS_HANDLED_EACH_POLL_CALL;
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  for (int i = 0; (drain || i < handle_count) &&
+                  pollable_obj->event_cursor != pollable_obj->event_count;
+       i++) {
+    int n = pollable_obj->event_cursor++;
+    struct epoll_event* ev = &pollable_obj->events[n];
+    void* data_ptr = ev->data.ptr;
+    if (1 & (intptr_t)data_ptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, "PS:%p got pollset_wakeup %p", pollset, data_ptr);
+      }
+      append_error(&error,
+                   grpc_wakeup_fd_consume_wakeup(
+                       (grpc_wakeup_fd*)((~static_cast<intptr_t>(1)) &
+                                         (intptr_t)data_ptr)),
+                   err_desc);
+    } else {
+      grpc_fd* fd =
+          reinterpret_cast<grpc_fd*>(reinterpret_cast<intptr_t>(data_ptr) & ~2);
+      bool track_err = reinterpret_cast<intptr_t>(data_ptr) & 2;
+      bool cancel = (ev->events & EPOLLHUP) != 0;
+      bool error = (ev->events & EPOLLERR) != 0;
+      bool read_ev = (ev->events & (EPOLLIN | EPOLLPRI)) != 0;
+      bool write_ev = (ev->events & EPOLLOUT) != 0;
+      bool err_fallback = error && !track_err;
+
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO,
+                "PS:%p got fd %p: cancel=%d read=%d "
+                "write=%d",
+                pollset, fd, cancel, read_ev, write_ev);
+      }
+      if (error && !err_fallback) {
+        fd_has_errors(fd);
+      }
+      if (read_ev || cancel || err_fallback) {
+        fd_become_readable(fd);
+      }
+      if (write_ev || cancel || err_fallback) {
+        fd_become_writable(fd);
+      }
+    }
+  }
+
+  return error;
+}
+
+/* pollset_shutdown is guaranteed to be called before pollset_destroy. */
+static void pollset_destroy(grpc_pollset* pollset) {
+  POLLABLE_UNREF(pollset->active_pollable, "pollset");
+  pollset->active_pollable = nullptr;
+  gpr_mu_destroy(&pollset->mu);
+}
+
+static grpc_error* pollable_epoll(pollable* p, grpc_millis deadline) {
+  GPR_TIMER_SCOPE("pollable_epoll", 0);
+  int timeout = poll_deadline_to_millis_timeout(deadline);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    char* desc = pollable_desc(p);
+    gpr_log(GPR_INFO, "POLLABLE:%p[%s] poll for %dms", p, desc, timeout);
+    gpr_free(desc);
+  }
+
+  if (timeout != 0) {
+    GRPC_SCHEDULING_START_BLOCKING_REGION;
+  }
+  int r;
+  do {
+    GRPC_STATS_INC_SYSCALL_POLL();
+    r = epoll_wait(p->epfd, p->events, MAX_EPOLL_EVENTS, timeout);
+  } while (r < 0 && errno == EINTR);
+  if (timeout != 0) {
+    GRPC_SCHEDULING_END_BLOCKING_REGION;
+  }
+
+  if (r < 0) return GRPC_OS_ERROR(errno, "epoll_wait");
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "POLLABLE:%p got %d events", p, r);
+  }
+
+  p->event_cursor = 0;
+  p->event_count = r;
+
+  return GRPC_ERROR_NONE;
+}
+
+/* Return true if first in list */
+static bool worker_insert(grpc_pollset_worker** root_worker,
+                          grpc_pollset_worker* worker, pwlinks link) {
+  if (*root_worker == nullptr) {
+    *root_worker = worker;
+    worker->links[link].next = worker->links[link].prev = worker;
+    return true;
+  } else {
+    worker->links[link].next = *root_worker;
+    worker->links[link].prev = worker->links[link].next->links[link].prev;
+    worker->links[link].next->links[link].prev = worker;
+    worker->links[link].prev->links[link].next = worker;
+    return false;
+  }
+}
+
+/* returns the new root IFF the root changed */
+typedef enum { WRR_NEW_ROOT, WRR_EMPTIED, WRR_REMOVED } worker_remove_result;
+
+static worker_remove_result worker_remove(grpc_pollset_worker** root_worker,
+                                          grpc_pollset_worker* worker,
+                                          pwlinks link) {
+  if (worker == *root_worker) {
+    if (worker == worker->links[link].next) {
+      *root_worker = nullptr;
+      return WRR_EMPTIED;
+    } else {
+      *root_worker = worker->links[link].next;
+      worker->links[link].prev->links[link].next = worker->links[link].next;
+      worker->links[link].next->links[link].prev = worker->links[link].prev;
+      return WRR_NEW_ROOT;
+    }
+  } else {
+    worker->links[link].prev->links[link].next = worker->links[link].next;
+    worker->links[link].next->links[link].prev = worker->links[link].prev;
+    return WRR_REMOVED;
+  }
+}
+
+/* Return true if this thread should poll */
+static bool begin_worker(grpc_pollset* pollset, grpc_pollset_worker* worker,
+                         grpc_pollset_worker** worker_hdl,
+                         grpc_millis deadline) {
+  GPR_TIMER_SCOPE("begin_worker", 0);
+  bool do_poll =
+      (pollset->shutdown_closure == nullptr && !pollset->already_shutdown);
+  gpr_atm_no_barrier_fetch_add(&pollset->worker_count, 1);
+  if (worker_hdl != nullptr) *worker_hdl = worker;
+  worker->initialized_cv = false;
+  worker->kicked = false;
+  worker->pollset = pollset;
+  worker->pollable_obj =
+      POLLABLE_REF(pollset->active_pollable, "pollset_worker");
+  worker_insert(&pollset->root_worker, worker, PWLINK_POLLSET);
+  gpr_mu_lock(&worker->pollable_obj->mu);
+  if (!worker_insert(&worker->pollable_obj->root_worker, worker,
+                     PWLINK_POLLABLE)) {
+    worker->initialized_cv = true;
+    gpr_cv_init(&worker->cv);
+    gpr_mu_unlock(&pollset->mu);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace) &&
+        worker->pollable_obj->root_worker != worker) {
+      gpr_log(GPR_INFO, "PS:%p wait %p w=%p for %dms", pollset,
+              worker->pollable_obj, worker,
+              poll_deadline_to_millis_timeout(deadline));
+    }
+    while (do_poll && worker->pollable_obj->root_worker != worker) {
+      if (gpr_cv_wait(&worker->cv, &worker->pollable_obj->mu,
+                      grpc_millis_to_timespec(deadline, GPR_CLOCK_REALTIME))) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, "PS:%p timeout_wait %p w=%p", pollset,
+                  worker->pollable_obj, worker);
+        }
+        do_poll = false;
+      } else if (worker->kicked) {
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+          gpr_log(GPR_INFO, "PS:%p wakeup %p w=%p", pollset,
+                  worker->pollable_obj, worker);
+        }
+        do_poll = false;
+      } else if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace) &&
+                 worker->pollable_obj->root_worker != worker) {
+        gpr_log(GPR_INFO, "PS:%p spurious_wakeup %p w=%p", pollset,
+                worker->pollable_obj, worker);
+      }
+    }
+    grpc_core::ExecCtx::Get()->InvalidateNow();
+  } else {
+    gpr_mu_unlock(&pollset->mu);
+  }
+  gpr_mu_unlock(&worker->pollable_obj->mu);
+
+  return do_poll;
+}
+
+static void end_worker(grpc_pollset* pollset, grpc_pollset_worker* worker,
+                       grpc_pollset_worker** /*worker_hdl*/) {
+  GPR_TIMER_SCOPE("end_worker", 0);
+  gpr_mu_lock(&pollset->mu);
+  gpr_mu_lock(&worker->pollable_obj->mu);
+  switch (worker_remove(&worker->pollable_obj->root_worker, worker,
+                        PWLINK_POLLABLE)) {
+    case WRR_NEW_ROOT: {
+      // wakeup new poller
+      grpc_pollset_worker* new_root = worker->pollable_obj->root_worker;
+      GPR_ASSERT(new_root->initialized_cv);
+      gpr_cv_signal(&new_root->cv);
+      break;
+    }
+    case WRR_EMPTIED:
+      if (pollset->active_pollable != worker->pollable_obj) {
+        // pollable no longer being polled: flush events
+        pollable_process_events(pollset, worker->pollable_obj, true);
+      }
+      break;
+    case WRR_REMOVED:
+      break;
+  }
+  gpr_mu_unlock(&worker->pollable_obj->mu);
+  POLLABLE_UNREF(worker->pollable_obj, "pollset_worker");
+  if (worker_remove(&pollset->root_worker, worker, PWLINK_POLLSET) ==
+      WRR_EMPTIED) {
+    pollset_maybe_finish_shutdown(pollset);
+  }
+  if (worker->initialized_cv) {
+    gpr_cv_destroy(&worker->cv);
+  }
+  gpr_atm_no_barrier_fetch_add(&pollset->worker_count, -1);
+}
+
+#ifndef NDEBUG
+static long sys_gettid(void) { return syscall(__NR_gettid); }
+#endif
+
+/* pollset->mu lock must be held by the caller before calling this.
+   The function pollset_work() may temporarily release the lock (pollset->po.mu)
+   during the course of its execution but it will always re-acquire the lock and
+   ensure that it is held by the time the function returns */
+static grpc_error* pollset_work(grpc_pollset* pollset,
+                                grpc_pollset_worker** worker_hdl,
+                                grpc_millis deadline) {
+  GPR_TIMER_SCOPE("pollset_work", 0);
+#ifdef GRPC_EPOLLEX_CREATE_WORKERS_ON_HEAP
+  grpc_pollset_worker* worker =
+      (grpc_pollset_worker*)gpr_malloc(sizeof(*worker));
+#define WORKER_PTR (worker)
+#else
+  grpc_pollset_worker worker;
+#define WORKER_PTR (&worker)
+#endif
+#ifndef NDEBUG
+  WORKER_PTR->originator = sys_gettid();
+#endif
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO,
+            "PS:%p work hdl=%p worker=%p now=%" PRId64 " deadline=%" PRId64
+            " kwp=%d pollable=%p",
+            pollset, worker_hdl, WORKER_PTR, grpc_core::ExecCtx::Get()->Now(),
+            deadline, pollset->kicked_without_poller, pollset->active_pollable);
+  }
+  static const char* err_desc = "pollset_work";
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (pollset->kicked_without_poller) {
+    pollset->kicked_without_poller = false;
+  } else {
+    if (begin_worker(pollset, WORKER_PTR, worker_hdl, deadline)) {
+      gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
+      gpr_tls_set(&g_current_thread_worker, (intptr_t)WORKER_PTR);
+      if (WORKER_PTR->pollable_obj->event_cursor ==
+          WORKER_PTR->pollable_obj->event_count) {
+        append_error(&error, pollable_epoll(WORKER_PTR->pollable_obj, deadline),
+                     err_desc);
+      }
+      append_error(
+          &error,
+          pollable_process_events(pollset, WORKER_PTR->pollable_obj, false),
+          err_desc);
+      grpc_core::ExecCtx::Get()->Flush();
+      gpr_tls_set(&g_current_thread_pollset, 0);
+      gpr_tls_set(&g_current_thread_worker, 0);
+    }
+    end_worker(pollset, WORKER_PTR, worker_hdl);
+  }
+#ifdef GRPC_EPOLLEX_CREATE_WORKERS_ON_HEAP
+  gpr_free(worker);
+#endif
+#undef WORKER_PTR
+  return error;
+}
+
+static grpc_error* pollset_transition_pollable_from_empty_to_fd_locked(
+    grpc_pollset* pollset, grpc_fd* fd) {
+  static const char* err_desc = "pollset_transition_pollable_from_empty_to_fd";
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO,
+            "PS:%p add fd %p (%d); transition pollable from empty to fd",
+            pollset, fd, fd->fd);
+  }
+  append_error(&error, pollset_kick_all(pollset), err_desc);
+  POLLABLE_UNREF(pollset->active_pollable, "pollset");
+  append_error(&error, get_fd_pollable(fd, &pollset->active_pollable),
+               err_desc);
+  return error;
+}
+
+static grpc_error* pollset_transition_pollable_from_fd_to_multi_locked(
+    grpc_pollset* pollset, grpc_fd* and_add_fd) {
+  static const char* err_desc = "pollset_transition_pollable_from_fd_to_multi";
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(
+        GPR_INFO,
+        "PS:%p add fd %p (%d); transition pollable from fd %p to multipoller",
+        pollset, and_add_fd, and_add_fd ? and_add_fd->fd : -1,
+        pollset->active_pollable->owner_fd);
+  }
+  append_error(&error, pollset_kick_all(pollset), err_desc);
+  grpc_fd* initial_fd = pollset->active_pollable->owner_fd;
+  POLLABLE_UNREF(pollset->active_pollable, "pollset");
+  pollset->active_pollable = nullptr;
+  if (append_error(&error, pollable_create(PO_MULTI, &pollset->active_pollable),
+                   err_desc)) {
+    append_error(&error, pollable_add_fd(pollset->active_pollable, initial_fd),
+                 err_desc);
+    if (and_add_fd != nullptr) {
+      append_error(&error,
+                   pollable_add_fd(pollset->active_pollable, and_add_fd),
+                   err_desc);
+    }
+  }
+  return error;
+}
+
+/* expects pollsets locked, flag whether fd is locked or not */
+static grpc_error* pollset_add_fd_locked(grpc_pollset* pollset, grpc_fd* fd) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  pollable* po_at_start =
+      POLLABLE_REF(pollset->active_pollable, "pollset_add_fd");
+  switch (pollset->active_pollable->type) {
+    case PO_EMPTY:
+      /* empty pollable --> single fd pollable */
+      error = pollset_transition_pollable_from_empty_to_fd_locked(pollset, fd);
+      break;
+    case PO_FD:
+      gpr_mu_lock(&po_at_start->owner_orphan_mu);
+      if (po_at_start->owner_orphaned) {
+        error =
+            pollset_transition_pollable_from_empty_to_fd_locked(pollset, fd);
+      } else {
+        /* fd --> multipoller */
+        error =
+            pollset_transition_pollable_from_fd_to_multi_locked(pollset, fd);
+      }
+      gpr_mu_unlock(&po_at_start->owner_orphan_mu);
+      break;
+    case PO_MULTI:
+      error = pollable_add_fd(pollset->active_pollable, fd);
+      break;
+  }
+  if (error != GRPC_ERROR_NONE) {
+    POLLABLE_UNREF(pollset->active_pollable, "pollset");
+    pollset->active_pollable = po_at_start;
+  } else {
+    gpr_atm_rel_store(&pollset->active_pollable_type,
+                      pollset->active_pollable->type);
+    POLLABLE_UNREF(po_at_start, "pollset_add_fd");
+  }
+  return error;
+}
+
+static grpc_error* pollset_as_multipollable_locked(grpc_pollset* pollset,
+                                                   pollable** pollable_obj) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  pollable* po_at_start =
+      POLLABLE_REF(pollset->active_pollable, "pollset_as_multipollable");
+  switch (pollset->active_pollable->type) {
+    case PO_EMPTY:
+      POLLABLE_UNREF(pollset->active_pollable, "pollset");
+      error = pollable_create(PO_MULTI, &pollset->active_pollable);
+      /* Any workers currently polling on this pollset must now be woked up so
+       * that they can pick up the new active_pollable */
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO,
+                "PS:%p active pollable transition from empty to multi",
+                pollset);
+      }
+      static const char* err_desc =
+          "pollset_as_multipollable_locked: empty -> multi";
+      append_error(&error, pollset_kick_all(pollset), err_desc);
+      break;
+    case PO_FD:
+      gpr_mu_lock(&po_at_start->owner_orphan_mu);
+      if (po_at_start->owner_orphaned) {
+        // Unlock before Unref'ing the pollable
+        gpr_mu_unlock(&po_at_start->owner_orphan_mu);
+        POLLABLE_UNREF(pollset->active_pollable, "pollset");
+        error = pollable_create(PO_MULTI, &pollset->active_pollable);
+      } else {
+        error = pollset_transition_pollable_from_fd_to_multi_locked(pollset,
+                                                                    nullptr);
+        gpr_mu_unlock(&po_at_start->owner_orphan_mu);
+      }
+      break;
+    case PO_MULTI:
+      break;
+  }
+  if (error != GRPC_ERROR_NONE) {
+    POLLABLE_UNREF(pollset->active_pollable, "pollset");
+    pollset->active_pollable = po_at_start;
+    *pollable_obj = nullptr;
+  } else {
+    gpr_atm_rel_store(&pollset->active_pollable_type,
+                      pollset->active_pollable->type);
+    *pollable_obj = POLLABLE_REF(pollset->active_pollable, "pollset_set");
+    POLLABLE_UNREF(po_at_start, "pollset_as_multipollable");
+  }
+  return error;
+}
+
+static void pollset_add_fd(grpc_pollset* pollset, grpc_fd* fd) {
+  GPR_TIMER_SCOPE("pollset_add_fd", 0);
+
+  // We never transition from PO_MULTI to other modes (i.e., PO_FD or PO_EMPTY)
+  // and, thus, it is safe to simply store and check whether the FD has already
+  // been added to the active pollable previously.
+  if (gpr_atm_acq_load(&pollset->active_pollable_type) == PO_MULTI &&
+      fd_has_pollset(fd, pollset)) {
+    return;
+  }
+
+  grpc_core::MutexLock lock(&pollset->mu);
+  grpc_error* error = pollset_add_fd_locked(pollset, fd);
+
+  // If we are in PO_MULTI mode, we should update the pollsets of the FD.
+  if (gpr_atm_no_barrier_load(&pollset->active_pollable_type) == PO_MULTI) {
+    fd_add_pollset(fd, pollset);
+  }
+
+  GRPC_LOG_IF_ERROR("pollset_add_fd", error);
+}
+
+/*******************************************************************************
+ * Pollset-set Definitions
+ */
+
+static grpc_pollset_set* pss_lock_adam(grpc_pollset_set* pss) {
+  gpr_mu_lock(&pss->mu);
+  while (pss->parent != nullptr) {
+    gpr_mu_unlock(&pss->mu);
+    pss = pss->parent;
+    gpr_mu_lock(&pss->mu);
+  }
+  return pss;
+}
+
+static grpc_pollset_set* pollset_set_create(void) {
+  grpc_pollset_set* pss =
+      static_cast<grpc_pollset_set*>(gpr_zalloc(sizeof(*pss)));
+  gpr_mu_init(&pss->mu);
+  new (&pss->refs) grpc_core::RefCount();
+  return pss;
+}
+
+static void pollset_set_unref(grpc_pollset_set* pss) {
+  if (pss == nullptr) return;
+  if (GPR_LIKELY(!pss->refs.Unref())) return;
+  pollset_set_unref(pss->parent);
+  gpr_mu_destroy(&pss->mu);
+  for (size_t i = 0; i < pss->pollset_count; i++) {
+    gpr_mu_lock(&pss->pollsets[i]->mu);
+    if (0 == --pss->pollsets[i]->containing_pollset_set_count) {
+      pollset_maybe_finish_shutdown(pss->pollsets[i]);
+    }
+    gpr_mu_unlock(&pss->pollsets[i]->mu);
+  }
+  for (size_t i = 0; i < pss->fd_count; i++) {
+    UNREF_BY(pss->fds[i], 2, "pollset_set");
+  }
+  gpr_free(pss->pollsets);
+  gpr_free(pss->fds);
+  gpr_free(pss);
+}
+
+static void pollset_set_add_fd(grpc_pollset_set* pss, grpc_fd* fd) {
+  GPR_TIMER_SCOPE("pollset_set_add_fd", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS:%p: add fd %p (%d)", pss, fd, fd->fd);
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "pollset_set_add_fd";
+  pss = pss_lock_adam(pss);
+  for (size_t i = 0; i < pss->pollset_count; i++) {
+    append_error(&error, pollable_add_fd(pss->pollsets[i]->active_pollable, fd),
+                 err_desc);
+  }
+  if (pss->fd_count == pss->fd_capacity) {
+    pss->fd_capacity = GPR_MAX(pss->fd_capacity * 2, 8);
+    pss->fds = static_cast<grpc_fd**>(
+        gpr_realloc(pss->fds, pss->fd_capacity * sizeof(*pss->fds)));
+  }
+  REF_BY(fd, 2, "pollset_set");
+  pss->fds[pss->fd_count++] = fd;
+  gpr_mu_unlock(&pss->mu);
+
+  GRPC_LOG_IF_ERROR(err_desc, error);
+}
+
+static void pollset_set_del_fd(grpc_pollset_set* pss, grpc_fd* fd) {
+  GPR_TIMER_SCOPE("pollset_set_del_fd", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS:%p: del fd %p", pss, fd);
+  }
+  pss = pss_lock_adam(pss);
+  size_t i;
+  for (i = 0; i < pss->fd_count; i++) {
+    if (pss->fds[i] == fd) {
+      UNREF_BY(fd, 2, "pollset_set");
+      break;
+    }
+  }
+  GPR_ASSERT(i != pss->fd_count);
+  for (; i < pss->fd_count - 1; i++) {
+    pss->fds[i] = pss->fds[i + 1];
+  }
+  pss->fd_count--;
+  gpr_mu_unlock(&pss->mu);
+}
+
+static void pollset_set_del_pollset(grpc_pollset_set* pss, grpc_pollset* ps) {
+  GPR_TIMER_SCOPE("pollset_set_del_pollset", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS:%p: del pollset %p", pss, ps);
+  }
+  pss = pss_lock_adam(pss);
+  size_t i;
+  for (i = 0; i < pss->pollset_count; i++) {
+    if (pss->pollsets[i] == ps) {
+      break;
+    }
+  }
+  GPR_ASSERT(i != pss->pollset_count);
+  for (; i < pss->pollset_count - 1; i++) {
+    pss->pollsets[i] = pss->pollsets[i + 1];
+  }
+  pss->pollset_count--;
+  gpr_mu_unlock(&pss->mu);
+  gpr_mu_lock(&ps->mu);
+  if (0 == --ps->containing_pollset_set_count) {
+    pollset_maybe_finish_shutdown(ps);
+  }
+  gpr_mu_unlock(&ps->mu);
+}
+
+// add all fds to pollables, and output a new array of unorphaned out_fds
+// assumes pollsets are multipollable
+static grpc_error* add_fds_to_pollsets(grpc_fd** fds, size_t fd_count,
+                                       grpc_pollset** pollsets,
+                                       size_t pollset_count,
+                                       const char* err_desc, grpc_fd** out_fds,
+                                       size_t* out_fd_count) {
+  GPR_TIMER_SCOPE("add_fds_to_pollsets", 0);
+  grpc_error* error = GRPC_ERROR_NONE;
+  for (size_t i = 0; i < fd_count; i++) {
+    gpr_mu_lock(&fds[i]->orphan_mu);
+    if ((gpr_atm_no_barrier_load(&fds[i]->refst) & 1) == 0) {
+      gpr_mu_unlock(&fds[i]->orphan_mu);
+      UNREF_BY(fds[i], 2, "pollset_set");
+    } else {
+      for (size_t j = 0; j < pollset_count; j++) {
+        append_error(&error,
+                     pollable_add_fd(pollsets[j]->active_pollable, fds[i]),
+                     err_desc);
+      }
+      gpr_mu_unlock(&fds[i]->orphan_mu);
+      out_fds[(*out_fd_count)++] = fds[i];
+    }
+  }
+  return error;
+}
+
+static void pollset_set_add_pollset(grpc_pollset_set* pss, grpc_pollset* ps) {
+  GPR_TIMER_SCOPE("pollset_set_add_pollset", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS:%p: add pollset %p", pss, ps);
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "pollset_set_add_pollset";
+  pollable* pollable_obj = nullptr;
+  gpr_mu_lock(&ps->mu);
+  if (!GRPC_LOG_IF_ERROR(err_desc,
+                         pollset_as_multipollable_locked(ps, &pollable_obj))) {
+    GPR_ASSERT(pollable_obj == nullptr);
+    gpr_mu_unlock(&ps->mu);
+    return;
+  }
+  ps->containing_pollset_set_count++;
+  gpr_mu_unlock(&ps->mu);
+  pss = pss_lock_adam(pss);
+  size_t initial_fd_count = pss->fd_count;
+  pss->fd_count = 0;
+  append_error(&error,
+               add_fds_to_pollsets(pss->fds, initial_fd_count, &ps, 1, err_desc,
+                                   pss->fds, &pss->fd_count),
+               err_desc);
+  if (pss->pollset_count == pss->pollset_capacity) {
+    pss->pollset_capacity = GPR_MAX(pss->pollset_capacity * 2, 8);
+    pss->pollsets = static_cast<grpc_pollset**>(gpr_realloc(
+        pss->pollsets, pss->pollset_capacity * sizeof(*pss->pollsets)));
+  }
+  pss->pollsets[pss->pollset_count++] = ps;
+  gpr_mu_unlock(&pss->mu);
+  POLLABLE_UNREF(pollable_obj, "pollset_set");
+
+  GRPC_LOG_IF_ERROR(err_desc, error);
+}
+
+static void pollset_set_add_pollset_set(grpc_pollset_set* a,
+                                        grpc_pollset_set* b) {
+  GPR_TIMER_SCOPE("pollset_set_add_pollset_set", 0);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS: merge (%p, %p)", a, b);
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  static const char* err_desc = "pollset_set_add_fd";
+  for (;;) {
+    if (a == b) {
+      // pollset ancestors are the same: nothing to do
+      return;
+    }
+    if (a > b) {
+      GPR_SWAP(grpc_pollset_set*, a, b);
+    }
+    gpr_mu* a_mu = &a->mu;
+    gpr_mu* b_mu = &b->mu;
+    gpr_mu_lock(a_mu);
+    gpr_mu_lock(b_mu);
+    if (a->parent != nullptr) {
+      a = a->parent;
+    } else if (b->parent != nullptr) {
+      b = b->parent;
+    } else {
+      break;  // exit loop, both pollsets locked
+    }
+    gpr_mu_unlock(a_mu);
+    gpr_mu_unlock(b_mu);
+  }
+  // try to do the least copying possible
+  // TODO(sreek): there's probably a better heuristic here
+  const size_t a_size = a->fd_count + a->pollset_count;
+  const size_t b_size = b->fd_count + b->pollset_count;
+  if (b_size > a_size) {
+    GPR_SWAP(grpc_pollset_set*, a, b);
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_INFO, "PSS: parent %p to %p", b, a);
+  }
+  a->refs.Ref();
+  b->parent = a;
+  if (a->fd_capacity < a->fd_count + b->fd_count) {
+    a->fd_capacity = GPR_MAX(2 * a->fd_capacity, a->fd_count + b->fd_count);
+    a->fds = static_cast<grpc_fd**>(
+        gpr_realloc(a->fds, a->fd_capacity * sizeof(*a->fds)));
+  }
+  size_t initial_a_fd_count = a->fd_count;
+  a->fd_count = 0;
+  append_error(
+      &error,
+      add_fds_to_pollsets(a->fds, initial_a_fd_count, b->pollsets,
+                          b->pollset_count, "merge_a2b", a->fds, &a->fd_count),
+      err_desc);
+  append_error(
+      &error,
+      add_fds_to_pollsets(b->fds, b->fd_count, a->pollsets, a->pollset_count,
+                          "merge_b2a", a->fds, &a->fd_count),
+      err_desc);
+  if (a->pollset_capacity < a->pollset_count + b->pollset_count) {
+    a->pollset_capacity =
+        GPR_MAX(2 * a->pollset_capacity, a->pollset_count + b->pollset_count);
+    a->pollsets = static_cast<grpc_pollset**>(
+        gpr_realloc(a->pollsets, a->pollset_capacity * sizeof(*a->pollsets)));
+  }
+  if (b->pollset_count > 0) {
+    memcpy(a->pollsets + a->pollset_count, b->pollsets,
+           b->pollset_count * sizeof(*b->pollsets));
+  }
+  a->pollset_count += b->pollset_count;
+  gpr_free(b->fds);
+  gpr_free(b->pollsets);
+  b->fds = nullptr;
+  b->pollsets = nullptr;
+  b->fd_count = b->fd_capacity = b->pollset_count = b->pollset_capacity = 0;
+  gpr_mu_unlock(&a->mu);
+  gpr_mu_unlock(&b->mu);
+}
+
+static void pollset_set_del_pollset_set(grpc_pollset_set* /*bag*/,
+                                        grpc_pollset_set* /*item*/) {}
+
+/*******************************************************************************
+ * Event engine binding
+ */
+
+static bool is_any_background_poller_thread(void) { return false; }
+
+static void shutdown_background_closure(void) {}
+
+static bool add_closure_to_background_poller(grpc_closure* /*closure*/,
+                                             grpc_error* /*error*/) {
+  return false;
+}
+
+static void shutdown_engine(void) {
+  fd_global_shutdown();
+  pollset_global_shutdown();
+}
+
+static const grpc_event_engine_vtable vtable = {
+    sizeof(grpc_pollset),
+    true,
+    false,
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_notify_on_error,
+    fd_become_readable,
+    fd_become_writable,
+    fd_has_errors,
+    fd_is_shutdown,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_unref,  // destroy ==> unref 1 public ref
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    is_any_background_poller_thread,
+    shutdown_background_closure,
+    shutdown_engine,
+    add_closure_to_background_poller,
+};
+
+const grpc_event_engine_vtable* grpc_init_epollex_linux(
+    bool /*explicitly_requested*/) {
+  if (!grpc_has_wakeup_fd()) {
+    gpr_log(GPR_ERROR, "Skipping epollex because of no wakeup fd.");
+    return nullptr;
+  }
+
+  if (!grpc_is_epollexclusive_available()) {
+    gpr_log(GPR_INFO, "Skipping epollex because it is not supported.");
+    return nullptr;
+  }
+
+  fd_global_init();
+
+  if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
+    pollset_global_shutdown();
+    fd_global_shutdown();
+    return nullptr;
+  }
+
+  return &vtable;
+}
+
+#else /* defined(GRPC_LINUX_EPOLL_CREATE1) */
+#if defined(GRPC_POSIX_SOCKET_EV_EPOLLEX)
+#include "src/core/lib/iomgr/ev_epollex_linux.h"
+/* If GRPC_LINUX_EPOLL_CREATE1 is not defined, it means
+   epoll_create1 is not available. Return NULL */
+const grpc_event_engine_vtable* grpc_init_epollex_linux(
+    bool /*explicitly_requested*/) {
+  return nullptr;
+}
+#endif /* defined(GRPC_POSIX_SOCKET_EV_EPOLLEX) */
+
+#endif /* !defined(GRPC_LINUX_EPOLL_CREATE1) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.h
new file mode 100644
index 0000000..e70ba72
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_epollex_linux.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H
+#define GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/port.h"
+
+const grpc_event_engine_vtable* grpc_init_epollex_linux(
+    bool explicitly_requested);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLLEX_LINUX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.cc
new file mode 100644
index 0000000..3daa1bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.cc	
@@ -0,0 +1,1427 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_EV_POLL
+
+#include "src/core/lib/iomgr/ev_poll_posix.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <poll.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+
+#define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker*)1)
+
+/*******************************************************************************
+ * FD declarations
+ */
+typedef struct grpc_fd_watcher {
+  struct grpc_fd_watcher* next;
+  struct grpc_fd_watcher* prev;
+  grpc_pollset* pollset;
+  grpc_pollset_worker* worker;
+  grpc_fd* fd;
+} grpc_fd_watcher;
+
+typedef struct grpc_cached_wakeup_fd grpc_cached_wakeup_fd;
+
+/* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+struct grpc_fork_fd_list {
+  /* Only one of fd or cached_wakeup_fd will be set. The unused field will be
+  set to nullptr. */
+  grpc_fd* fd;
+  grpc_cached_wakeup_fd* cached_wakeup_fd;
+
+  grpc_fork_fd_list* next;
+  grpc_fork_fd_list* prev;
+};
+
+struct grpc_fd {
+  int fd;
+  /* refst format:
+     bit0:   1=active/0=orphaned
+     bit1-n: refcount
+     meaning that mostly we ref by two to avoid altering the orphaned bit,
+     and just unref by 1 when we're ready to flag the object as orphaned */
+  gpr_atm refst;
+
+  gpr_mu mu;
+  int shutdown;
+  int closed;
+  int released;
+  gpr_atm pollhup;
+  grpc_error* shutdown_error;
+
+  /* The watcher list.
+
+     The following watcher related fields are protected by watcher_mu.
+
+     An fd_watcher is an ephemeral object created when an fd wants to
+     begin polling, and destroyed after the poll.
+
+     It denotes the fd's interest in whether to read poll or write poll
+     or both or neither on this fd.
+
+     If a watcher is asked to poll for reads or writes, the read_watcher
+     or write_watcher fields are set respectively. A watcher may be asked
+     to poll for both, in which case both fields will be set.
+
+     read_watcher and write_watcher may be NULL if no watcher has been
+     asked to poll for reads or writes.
+
+     If an fd_watcher is not asked to poll for reads or writes, it's added
+     to a linked list of inactive watchers, rooted at inactive_watcher_root.
+     If at a later time there becomes need of a poller to poll, one of
+     the inactive pollers may be kicked out of their poll loops to take
+     that responsibility. */
+  grpc_fd_watcher inactive_watcher_root;
+  grpc_fd_watcher* read_watcher;
+  grpc_fd_watcher* write_watcher;
+
+  grpc_closure* read_closure;
+  grpc_closure* write_closure;
+
+  grpc_closure* on_done_closure;
+
+  grpc_iomgr_object iomgr_object;
+
+  /* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+  grpc_fork_fd_list* fork_fd_list;
+};
+
+/* True when GRPC_ENABLE_FORK_SUPPORT=1. */
+static bool track_fds_for_fork = false;
+
+/* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+static grpc_fork_fd_list* fork_fd_list_head = nullptr;
+static gpr_mu fork_fd_list_mu;
+
+/* Begin polling on an fd.
+   Registers that the given pollset is interested in this fd - so that if read
+   or writability interest changes, the pollset can be kicked to pick up that
+   new interest.
+   Return value is:
+     (fd_needs_read? read_mask : 0) | (fd_needs_write? write_mask : 0)
+   i.e. a combination of read_mask and write_mask determined by the fd's current
+   interest in said events.
+   Polling strategies that do not need to alter their behavior depending on the
+   fd's current interest (such as epoll) do not need to call this function.
+   MUST NOT be called with a pollset lock taken */
+static uint32_t fd_begin_poll(grpc_fd* fd, grpc_pollset* pollset,
+                              grpc_pollset_worker* worker, uint32_t read_mask,
+                              uint32_t write_mask, grpc_fd_watcher* rec);
+/* Complete polling previously started with fd_begin_poll
+   MUST NOT be called with a pollset lock taken
+   if got_read or got_write are 1, also does the become_{readable,writable} as
+   appropriate. */
+static void fd_end_poll(grpc_fd_watcher* rec, int got_read, int got_write);
+
+/* Return 1 if this fd is orphaned, 0 otherwise */
+static bool fd_is_orphaned(grpc_fd* fd);
+
+#ifndef NDEBUG
+static void fd_ref(grpc_fd* fd, const char* reason, const char* file, int line);
+static void fd_unref(grpc_fd* fd, const char* reason, const char* file,
+                     int line);
+#define GRPC_FD_REF(fd, reason) fd_ref(fd, reason, __FILE__, __LINE__)
+#define GRPC_FD_UNREF(fd, reason) fd_unref(fd, reason, __FILE__, __LINE__)
+#else
+static void fd_ref(grpc_fd* fd);
+static void fd_unref(grpc_fd* fd);
+#define GRPC_FD_REF(fd, reason) fd_ref(fd)
+#define GRPC_FD_UNREF(fd, reason) fd_unref(fd)
+#endif
+
+#define CLOSURE_NOT_READY ((grpc_closure*)0)
+#define CLOSURE_READY ((grpc_closure*)1)
+
+/*******************************************************************************
+ * pollset declarations
+ */
+
+typedef struct grpc_cached_wakeup_fd {
+  grpc_wakeup_fd fd;
+  struct grpc_cached_wakeup_fd* next;
+
+  /* Only used when GRPC_ENABLE_FORK_SUPPORT=1 */
+  grpc_fork_fd_list* fork_fd_list;
+} grpc_cached_wakeup_fd;
+
+struct grpc_pollset_worker {
+  grpc_cached_wakeup_fd* wakeup_fd;
+  int reevaluate_polling_on_wakeup;
+  int kicked_specifically;
+  struct grpc_pollset_worker* next;
+  struct grpc_pollset_worker* prev;
+};
+
+struct grpc_pollset {
+  gpr_mu mu;
+  grpc_pollset_worker root_worker;
+  int shutting_down;
+  int called_shutdown;
+  int kicked_without_pollers;
+  grpc_closure* shutdown_done;
+  int pollset_set_count;
+  /* all polled fds */
+  size_t fd_count;
+  size_t fd_capacity;
+  grpc_fd** fds;
+  /* Local cache of eventfds for workers */
+  grpc_cached_wakeup_fd* local_wakeup_cache;
+};
+
+/* Add an fd to a pollset */
+static void pollset_add_fd(grpc_pollset* pollset, struct grpc_fd* fd);
+
+static void pollset_set_add_fd(grpc_pollset_set* pollset_set, grpc_fd* fd);
+
+/* Convert a timespec to milliseconds:
+   - very small or negative poll times are clamped to zero to do a
+     non-blocking poll (which becomes spin polling)
+   - other small values are rounded up to one millisecond
+   - longer than a millisecond polls are rounded up to the next nearest
+     millisecond to avoid spinning
+   - infinite timeouts are converted to -1 */
+static int poll_deadline_to_millis_timeout(grpc_millis deadline);
+
+/* Allow kick to wakeup the currently polling worker */
+#define GRPC_POLLSET_CAN_KICK_SELF 1
+/* Force the wakee to repoll when awoken */
+#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2
+/* As per pollset_kick, with an extended set of flags (defined above)
+   -- mostly for fd_posix's use. */
+static grpc_error* pollset_kick_ext(grpc_pollset* p,
+                                    grpc_pollset_worker* specific_worker,
+                                    uint32_t flags) GRPC_MUST_USE_RESULT;
+
+/* Return 1 if the pollset has active threads in pollset_work (pollset must
+ * be locked) */
+static bool pollset_has_workers(grpc_pollset* pollset);
+
+/*******************************************************************************
+ * pollset_set definitions
+ */
+
+struct grpc_pollset_set {
+  gpr_mu mu;
+
+  size_t pollset_count;
+  size_t pollset_capacity;
+  grpc_pollset** pollsets;
+
+  size_t pollset_set_count;
+  size_t pollset_set_capacity;
+  struct grpc_pollset_set** pollset_sets;
+
+  size_t fd_count;
+  size_t fd_capacity;
+  grpc_fd** fds;
+};
+
+/*******************************************************************************
+ * functions to track opened fds. No-ops unless track_fds_for_fork is true.
+ */
+
+static void fork_fd_list_remove_node(grpc_fork_fd_list* node) {
+  if (track_fds_for_fork) {
+    gpr_mu_lock(&fork_fd_list_mu);
+    if (fork_fd_list_head == node) {
+      fork_fd_list_head = node->next;
+    }
+    if (node->prev != nullptr) {
+      node->prev->next = node->next;
+    }
+    if (node->next != nullptr) {
+      node->next->prev = node->prev;
+    }
+    gpr_free(node);
+    gpr_mu_unlock(&fork_fd_list_mu);
+  }
+}
+
+static void fork_fd_list_add_node(grpc_fork_fd_list* node) {
+  gpr_mu_lock(&fork_fd_list_mu);
+  node->next = fork_fd_list_head;
+  node->prev = nullptr;
+  if (fork_fd_list_head != nullptr) {
+    fork_fd_list_head->prev = node;
+  }
+  fork_fd_list_head = node;
+  gpr_mu_unlock(&fork_fd_list_mu);
+}
+
+static void fork_fd_list_add_grpc_fd(grpc_fd* fd) {
+  if (track_fds_for_fork) {
+    fd->fork_fd_list =
+        static_cast<grpc_fork_fd_list*>(gpr_malloc(sizeof(grpc_fork_fd_list)));
+    fd->fork_fd_list->fd = fd;
+    fd->fork_fd_list->cached_wakeup_fd = nullptr;
+    fork_fd_list_add_node(fd->fork_fd_list);
+  }
+}
+
+static void fork_fd_list_add_wakeup_fd(grpc_cached_wakeup_fd* fd) {
+  if (track_fds_for_fork) {
+    fd->fork_fd_list =
+        static_cast<grpc_fork_fd_list*>(gpr_malloc(sizeof(grpc_fork_fd_list)));
+    fd->fork_fd_list->cached_wakeup_fd = fd;
+    fd->fork_fd_list->fd = nullptr;
+    fork_fd_list_add_node(fd->fork_fd_list);
+  }
+}
+
+  /*******************************************************************************
+   * fd_posix.c
+   */
+
+#ifndef NDEBUG
+#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__)
+#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__)
+static void ref_by(grpc_fd* fd, int n, const char* reason, const char* file,
+                   int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+    gpr_log(GPR_DEBUG,
+            "FD %d %p   ref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
+            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
+            gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line);
+  }
+#else
+#define REF_BY(fd, n, reason) \
+  do {                        \
+    ref_by(fd, n);            \
+    (void)(reason);           \
+  } while (0)
+#define UNREF_BY(fd, n, reason) \
+  do {                          \
+    unref_by(fd, n);            \
+    (void)(reason);             \
+  } while (0)
+static void ref_by(grpc_fd* fd, int n) {
+#endif
+  GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0);
+}
+
+#ifndef NDEBUG
+static void unref_by(grpc_fd* fd, int n, const char* reason, const char* file,
+                     int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_fd_refcount)) {
+    gpr_log(GPR_DEBUG,
+            "FD %d %p unref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
+            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
+            gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line);
+  }
+#else
+static void unref_by(grpc_fd* fd, int n) {
+#endif
+  gpr_atm old = gpr_atm_full_fetch_add(&fd->refst, -n);
+  if (old == n) {
+    gpr_mu_destroy(&fd->mu);
+    grpc_iomgr_unregister_object(&fd->iomgr_object);
+    fork_fd_list_remove_node(fd->fork_fd_list);
+    if (fd->shutdown) GRPC_ERROR_UNREF(fd->shutdown_error);
+    gpr_free(fd);
+  } else {
+    GPR_ASSERT(old > n);
+  }
+}
+
+static grpc_fd* fd_create(int fd, const char* name, bool track_err) {
+  // Avoid unused-parameter warning for debug-only parameter
+  (void)track_err;
+  GPR_DEBUG_ASSERT(track_err == false);
+  grpc_fd* r = static_cast<grpc_fd*>(gpr_malloc(sizeof(*r)));
+  gpr_mu_init(&r->mu);
+  gpr_atm_rel_store(&r->refst, 1);
+  r->shutdown = 0;
+  r->read_closure = CLOSURE_NOT_READY;
+  r->write_closure = CLOSURE_NOT_READY;
+  r->fd = fd;
+  r->inactive_watcher_root.next = r->inactive_watcher_root.prev =
+      &r->inactive_watcher_root;
+  r->read_watcher = r->write_watcher = nullptr;
+  r->on_done_closure = nullptr;
+  r->closed = 0;
+  r->released = 0;
+  gpr_atm_no_barrier_store(&r->pollhup, 0);
+
+  char* name2;
+  gpr_asprintf(&name2, "%s fd=%d", name, fd);
+  grpc_iomgr_register_object(&r->iomgr_object, name2);
+  gpr_free(name2);
+  fork_fd_list_add_grpc_fd(r);
+  return r;
+}
+
+static bool fd_is_orphaned(grpc_fd* fd) {
+  return (gpr_atm_acq_load(&fd->refst) & 1) == 0;
+}
+
+static grpc_error* pollset_kick_locked(grpc_fd_watcher* watcher) {
+  gpr_mu_lock(&watcher->pollset->mu);
+  GPR_ASSERT(watcher->worker);
+  grpc_error* err = pollset_kick_ext(watcher->pollset, watcher->worker,
+                                     GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP);
+  gpr_mu_unlock(&watcher->pollset->mu);
+  return err;
+}
+
+static void maybe_wake_one_watcher_locked(grpc_fd* fd) {
+  if (fd->inactive_watcher_root.next != &fd->inactive_watcher_root) {
+    pollset_kick_locked(fd->inactive_watcher_root.next);
+  } else if (fd->read_watcher) {
+    pollset_kick_locked(fd->read_watcher);
+  } else if (fd->write_watcher) {
+    pollset_kick_locked(fd->write_watcher);
+  }
+}
+
+static void wake_all_watchers_locked(grpc_fd* fd) {
+  grpc_fd_watcher* watcher;
+  for (watcher = fd->inactive_watcher_root.next;
+       watcher != &fd->inactive_watcher_root; watcher = watcher->next) {
+    pollset_kick_locked(watcher);
+  }
+  if (fd->read_watcher) {
+    pollset_kick_locked(fd->read_watcher);
+  }
+  if (fd->write_watcher && fd->write_watcher != fd->read_watcher) {
+    pollset_kick_locked(fd->write_watcher);
+  }
+}
+
+static int has_watchers(grpc_fd* fd) {
+  return fd->read_watcher != nullptr || fd->write_watcher != nullptr ||
+         fd->inactive_watcher_root.next != &fd->inactive_watcher_root;
+}
+
+static void close_fd_locked(grpc_fd* fd) {
+  fd->closed = 1;
+  if (!fd->released) {
+    close(fd->fd);
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, fd->on_done_closure, GRPC_ERROR_NONE);
+}
+
+static int fd_wrapped_fd(grpc_fd* fd) {
+  if (fd->released || fd->closed) {
+    return -1;
+  } else {
+    return fd->fd;
+  }
+}
+
+static void fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                      const char* reason) {
+  fd->on_done_closure = on_done;
+  fd->released = release_fd != nullptr;
+  if (release_fd != nullptr) {
+    *release_fd = fd->fd;
+    fd->released = true;
+  }
+  gpr_mu_lock(&fd->mu);
+  REF_BY(fd, 1, reason); /* remove active status, but keep referenced */
+  if (!has_watchers(fd)) {
+    close_fd_locked(fd);
+  } else {
+    wake_all_watchers_locked(fd);
+  }
+  gpr_mu_unlock(&fd->mu);
+  UNREF_BY(fd, 2, reason); /* drop the reference */
+}
+
+/* increment refcount by two to avoid changing the orphan bit */
+#ifndef NDEBUG
+static void fd_ref(grpc_fd* fd, const char* reason, const char* file,
+                   int line) {
+  ref_by(fd, 2, reason, file, line);
+}
+
+static void fd_unref(grpc_fd* fd, const char* reason, const char* file,
+                     int line) {
+  unref_by(fd, 2, reason, file, line);
+}
+#else
+static void fd_ref(grpc_fd* fd) { ref_by(fd, 2); }
+
+static void fd_unref(grpc_fd* fd) { unref_by(fd, 2); }
+#endif
+
+static grpc_error* fd_shutdown_error(grpc_fd* fd) {
+  if (!fd->shutdown) {
+    return GRPC_ERROR_NONE;
+  } else {
+    return grpc_error_set_int(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                                  "FD shutdown", &fd->shutdown_error, 1),
+                              GRPC_ERROR_INT_GRPC_STATUS,
+                              GRPC_STATUS_UNAVAILABLE);
+  }
+}
+
+static void notify_on_locked(grpc_fd* fd, grpc_closure** st,
+                             grpc_closure* closure) {
+  if (fd->shutdown || gpr_atm_no_barrier_load(&fd->pollhup)) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, closure,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("FD shutdown"),
+                           GRPC_ERROR_INT_GRPC_STATUS,
+                           GRPC_STATUS_UNAVAILABLE));
+  } else if (*st == CLOSURE_NOT_READY) {
+    /* not ready ==> switch to a waiting state by setting the closure */
+    *st = closure;
+  } else if (*st == CLOSURE_READY) {
+    /* already ready ==> queue the closure to run immediately */
+    *st = CLOSURE_NOT_READY;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, fd_shutdown_error(fd));
+    maybe_wake_one_watcher_locked(fd);
+  } else {
+    /* upcallptr was set to a different closure.  This is an error! */
+    gpr_log(GPR_ERROR,
+            "User called a notify_on function with a previous callback still "
+            "pending");
+    abort();
+  }
+}
+
+/* returns 1 if state becomes not ready */
+static int set_ready_locked(grpc_fd* fd, grpc_closure** st) {
+  if (*st == CLOSURE_READY) {
+    /* duplicate ready ==> ignore */
+    return 0;
+  } else if (*st == CLOSURE_NOT_READY) {
+    /* not ready, and not waiting ==> flag ready */
+    *st = CLOSURE_READY;
+    return 0;
+  } else {
+    /* waiting ==> queue closure */
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, *st, fd_shutdown_error(fd));
+    *st = CLOSURE_NOT_READY;
+    return 1;
+  }
+}
+
+static void fd_shutdown(grpc_fd* fd, grpc_error* why) {
+  gpr_mu_lock(&fd->mu);
+  /* only shutdown once */
+  if (!fd->shutdown) {
+    fd->shutdown = 1;
+    fd->shutdown_error = why;
+    /* signal read/write closed to OS so that future operations fail */
+    shutdown(fd->fd, SHUT_RDWR);
+    set_ready_locked(fd, &fd->read_closure);
+    set_ready_locked(fd, &fd->write_closure);
+  } else {
+    GRPC_ERROR_UNREF(why);
+  }
+  gpr_mu_unlock(&fd->mu);
+}
+
+static bool fd_is_shutdown(grpc_fd* fd) {
+  gpr_mu_lock(&fd->mu);
+  bool r = fd->shutdown;
+  gpr_mu_unlock(&fd->mu);
+  return r;
+}
+
+static void fd_notify_on_read(grpc_fd* fd, grpc_closure* closure) {
+  gpr_mu_lock(&fd->mu);
+  notify_on_locked(fd, &fd->read_closure, closure);
+  gpr_mu_unlock(&fd->mu);
+}
+
+static void fd_notify_on_write(grpc_fd* fd, grpc_closure* closure) {
+  gpr_mu_lock(&fd->mu);
+  notify_on_locked(fd, &fd->write_closure, closure);
+  gpr_mu_unlock(&fd->mu);
+}
+
+static void fd_notify_on_error(grpc_fd* /*fd*/, grpc_closure* closure) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_ERROR, "Polling engine does not support tracking errors.");
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_CANCELLED);
+}
+
+static void fd_set_readable(grpc_fd* fd) {
+  gpr_mu_lock(&fd->mu);
+  set_ready_locked(fd, &fd->read_closure);
+  gpr_mu_unlock(&fd->mu);
+}
+
+static void fd_set_writable(grpc_fd* fd) {
+  gpr_mu_lock(&fd->mu);
+  set_ready_locked(fd, &fd->write_closure);
+  gpr_mu_unlock(&fd->mu);
+}
+
+static void fd_set_error(grpc_fd* /*fd*/) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+    gpr_log(GPR_ERROR, "Polling engine does not support tracking errors.");
+  }
+}
+
+static uint32_t fd_begin_poll(grpc_fd* fd, grpc_pollset* pollset,
+                              grpc_pollset_worker* worker, uint32_t read_mask,
+                              uint32_t write_mask, grpc_fd_watcher* watcher) {
+  uint32_t mask = 0;
+  grpc_closure* cur;
+  int requested;
+  /* keep track of pollers that have requested our events, in case they change
+   */
+  GRPC_FD_REF(fd, "poll");
+
+  gpr_mu_lock(&fd->mu);
+
+  /* if we are shutdown, then don't add to the watcher set */
+  if (fd->shutdown) {
+    watcher->fd = nullptr;
+    watcher->pollset = nullptr;
+    watcher->worker = nullptr;
+    gpr_mu_unlock(&fd->mu);
+    GRPC_FD_UNREF(fd, "poll");
+    return 0;
+  }
+
+  /* if there is nobody polling for read, but we need to, then start doing so */
+  cur = fd->read_closure;
+  requested = cur != CLOSURE_READY;
+  if (read_mask && fd->read_watcher == nullptr && requested) {
+    fd->read_watcher = watcher;
+    mask |= read_mask;
+  }
+  /* if there is nobody polling for write, but we need to, then start doing so
+   */
+  cur = fd->write_closure;
+  requested = cur != CLOSURE_READY;
+  if (write_mask && fd->write_watcher == nullptr && requested) {
+    fd->write_watcher = watcher;
+    mask |= write_mask;
+  }
+  /* if not polling, remember this watcher in case we need someone to later */
+  if (mask == 0 && worker != nullptr) {
+    watcher->next = &fd->inactive_watcher_root;
+    watcher->prev = watcher->next->prev;
+    watcher->next->prev = watcher->prev->next = watcher;
+  }
+  watcher->pollset = pollset;
+  watcher->worker = worker;
+  watcher->fd = fd;
+  gpr_mu_unlock(&fd->mu);
+
+  return mask;
+}
+
+static void fd_end_poll(grpc_fd_watcher* watcher, int got_read, int got_write) {
+  int was_polling = 0;
+  int kick = 0;
+  grpc_fd* fd = watcher->fd;
+
+  if (fd == nullptr) {
+    return;
+  }
+
+  gpr_mu_lock(&fd->mu);
+
+  if (watcher == fd->read_watcher) {
+    /* remove read watcher, kick if we still need a read */
+    was_polling = 1;
+    if (!got_read) {
+      kick = 1;
+    }
+    fd->read_watcher = nullptr;
+  }
+  if (watcher == fd->write_watcher) {
+    /* remove write watcher, kick if we still need a write */
+    was_polling = 1;
+    if (!got_write) {
+      kick = 1;
+    }
+    fd->write_watcher = nullptr;
+  }
+  if (!was_polling && watcher->worker != nullptr) {
+    /* remove from inactive list */
+    watcher->next->prev = watcher->prev;
+    watcher->prev->next = watcher->next;
+  }
+  if (got_read) {
+    if (set_ready_locked(fd, &fd->read_closure)) {
+      kick = 1;
+    }
+  }
+  if (got_write) {
+    if (set_ready_locked(fd, &fd->write_closure)) {
+      kick = 1;
+    }
+  }
+  if (kick) {
+    maybe_wake_one_watcher_locked(fd);
+  }
+  if (fd_is_orphaned(fd) && !has_watchers(fd) && !fd->closed) {
+    close_fd_locked(fd);
+  }
+  gpr_mu_unlock(&fd->mu);
+
+  GRPC_FD_UNREF(fd, "poll");
+}
+
+/*******************************************************************************
+ * pollset_posix.c
+ */
+
+GPR_TLS_DECL(g_current_thread_poller);
+GPR_TLS_DECL(g_current_thread_worker);
+
+static void remove_worker(grpc_pollset* /*p*/, grpc_pollset_worker* worker) {
+  worker->prev->next = worker->next;
+  worker->next->prev = worker->prev;
+}
+
+static bool pollset_has_workers(grpc_pollset* p) {
+  return p->root_worker.next != &p->root_worker;
+}
+
+static bool pollset_in_pollset_sets(grpc_pollset* p) {
+  return p->pollset_set_count;
+}
+
+static bool pollset_has_observers(grpc_pollset* p) {
+  return pollset_has_workers(p) || pollset_in_pollset_sets(p);
+}
+
+static grpc_pollset_worker* pop_front_worker(grpc_pollset* p) {
+  if (pollset_has_workers(p)) {
+    grpc_pollset_worker* w = p->root_worker.next;
+    remove_worker(p, w);
+    return w;
+  } else {
+    return nullptr;
+  }
+}
+
+static void push_back_worker(grpc_pollset* p, grpc_pollset_worker* worker) {
+  worker->next = &p->root_worker;
+  worker->prev = worker->next->prev;
+  worker->prev->next = worker->next->prev = worker;
+}
+
+static void push_front_worker(grpc_pollset* p, grpc_pollset_worker* worker) {
+  worker->prev = &p->root_worker;
+  worker->next = worker->prev->next;
+  worker->prev->next = worker->next->prev = worker;
+}
+
+static void kick_append_error(grpc_error** composite, grpc_error* error) {
+  if (error == GRPC_ERROR_NONE) return;
+  if (*composite == GRPC_ERROR_NONE) {
+    *composite = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Kick Failure");
+  }
+  *composite = grpc_error_add_child(*composite, error);
+}
+
+static grpc_error* pollset_kick_ext(grpc_pollset* p,
+                                    grpc_pollset_worker* specific_worker,
+                                    uint32_t flags) {
+  GPR_TIMER_SCOPE("pollset_kick_ext", 0);
+  grpc_error* error = GRPC_ERROR_NONE;
+  GRPC_STATS_INC_POLLSET_KICK();
+
+  /* pollset->mu already held */
+  if (specific_worker != nullptr) {
+    if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
+      GPR_TIMER_SCOPE("pollset_kick_ext.broadcast", 0);
+      GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
+      for (specific_worker = p->root_worker.next;
+           specific_worker != &p->root_worker;
+           specific_worker = specific_worker->next) {
+        kick_append_error(
+            &error, grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd));
+      }
+      p->kicked_without_pollers = true;
+    } else if (gpr_tls_get(&g_current_thread_worker) !=
+               (intptr_t)specific_worker) {
+      GPR_TIMER_MARK("different_thread_worker", 0);
+      if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+        specific_worker->reevaluate_polling_on_wakeup = true;
+      }
+      specific_worker->kicked_specifically = true;
+      kick_append_error(&error,
+                        grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd));
+    } else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) {
+      GPR_TIMER_MARK("kick_yoself", 0);
+      if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+        specific_worker->reevaluate_polling_on_wakeup = true;
+      }
+      specific_worker->kicked_specifically = true;
+      kick_append_error(&error,
+                        grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd));
+    }
+  } else if (gpr_tls_get(&g_current_thread_poller) != (intptr_t)p) {
+    GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
+    GPR_TIMER_MARK("kick_anonymous", 0);
+    specific_worker = pop_front_worker(p);
+    if (specific_worker != nullptr) {
+      if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) {
+        GPR_TIMER_MARK("kick_anonymous_not_self", 0);
+        push_back_worker(p, specific_worker);
+        specific_worker = pop_front_worker(p);
+        if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 &&
+            gpr_tls_get(&g_current_thread_worker) ==
+                (intptr_t)specific_worker) {
+          push_back_worker(p, specific_worker);
+          specific_worker = nullptr;
+        }
+      }
+      if (specific_worker != nullptr) {
+        GPR_TIMER_MARK("finally_kick", 0);
+        push_back_worker(p, specific_worker);
+        kick_append_error(
+            &error, grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd));
+      }
+    } else {
+      GPR_TIMER_MARK("kicked_no_pollers", 0);
+      p->kicked_without_pollers = true;
+    }
+  }
+
+  GRPC_LOG_IF_ERROR("pollset_kick_ext", GRPC_ERROR_REF(error));
+  return error;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* p,
+                                grpc_pollset_worker* specific_worker) {
+  return pollset_kick_ext(p, specific_worker, 0);
+}
+
+/* global state management */
+
+static grpc_error* pollset_global_init(void) {
+  gpr_tls_init(&g_current_thread_poller);
+  gpr_tls_init(&g_current_thread_worker);
+  return GRPC_ERROR_NONE;
+}
+
+static void pollset_global_shutdown(void) {
+  gpr_tls_destroy(&g_current_thread_poller);
+  gpr_tls_destroy(&g_current_thread_worker);
+}
+
+/* main interface */
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  gpr_mu_init(&pollset->mu);
+  *mu = &pollset->mu;
+  pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
+  pollset->shutting_down = 0;
+  pollset->called_shutdown = 0;
+  pollset->kicked_without_pollers = 0;
+  pollset->local_wakeup_cache = nullptr;
+  pollset->kicked_without_pollers = 0;
+  pollset->fd_count = 0;
+  pollset->fd_capacity = 0;
+  pollset->fds = nullptr;
+  pollset->pollset_set_count = 0;
+}
+
+static void pollset_destroy(grpc_pollset* pollset) {
+  GPR_ASSERT(!pollset_has_workers(pollset));
+  while (pollset->local_wakeup_cache) {
+    grpc_cached_wakeup_fd* next = pollset->local_wakeup_cache->next;
+    fork_fd_list_remove_node(pollset->local_wakeup_cache->fork_fd_list);
+    grpc_wakeup_fd_destroy(&pollset->local_wakeup_cache->fd);
+    gpr_free(pollset->local_wakeup_cache);
+    pollset->local_wakeup_cache = next;
+  }
+  gpr_free(pollset->fds);
+  gpr_mu_destroy(&pollset->mu);
+}
+
+static void pollset_add_fd(grpc_pollset* pollset, grpc_fd* fd) {
+  gpr_mu_lock(&pollset->mu);
+  size_t i;
+  /* TODO(ctiller): this is O(num_fds^2); maybe switch to a hash set here */
+  for (i = 0; i < pollset->fd_count; i++) {
+    if (pollset->fds[i] == fd) goto exit;
+  }
+  if (pollset->fd_count == pollset->fd_capacity) {
+    pollset->fd_capacity =
+        GPR_MAX(pollset->fd_capacity + 8, pollset->fd_count * 3 / 2);
+    pollset->fds = static_cast<grpc_fd**>(
+        gpr_realloc(pollset->fds, sizeof(grpc_fd*) * pollset->fd_capacity));
+  }
+  pollset->fds[pollset->fd_count++] = fd;
+  GRPC_FD_REF(fd, "multipoller");
+  pollset_kick(pollset, nullptr);
+exit:
+  gpr_mu_unlock(&pollset->mu);
+}
+
+static void finish_shutdown(grpc_pollset* pollset) {
+  size_t i;
+  for (i = 0; i < pollset->fd_count; i++) {
+    GRPC_FD_UNREF(pollset->fds[i], "multipoller");
+  }
+  pollset->fd_count = 0;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, pollset->shutdown_done,
+                          GRPC_ERROR_NONE);
+}
+
+static void work_combine_error(grpc_error** composite, grpc_error* error) {
+  if (error == GRPC_ERROR_NONE) return;
+  if (*composite == GRPC_ERROR_NONE) {
+    *composite = GRPC_ERROR_CREATE_FROM_STATIC_STRING("pollset_work");
+  }
+  *composite = grpc_error_add_child(*composite, error);
+}
+
+static grpc_error* pollset_work(grpc_pollset* pollset,
+                                grpc_pollset_worker** worker_hdl,
+                                grpc_millis deadline) {
+  GPR_TIMER_SCOPE("pollset_work", 0);
+  grpc_pollset_worker worker;
+  if (worker_hdl) *worker_hdl = &worker;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  /* Avoid malloc for small number of elements. */
+  enum { inline_elements = 96 };
+  struct pollfd pollfd_space[inline_elements];
+  struct grpc_fd_watcher watcher_space[inline_elements];
+
+  /* pollset->mu already held */
+  int added_worker = 0;
+  int locked = 1;
+  int queued_work = 0;
+  int keep_polling = 0;
+  /* this must happen before we (potentially) drop pollset->mu */
+  worker.next = worker.prev = nullptr;
+  worker.reevaluate_polling_on_wakeup = 0;
+  if (pollset->local_wakeup_cache != nullptr) {
+    worker.wakeup_fd = pollset->local_wakeup_cache;
+    pollset->local_wakeup_cache = worker.wakeup_fd->next;
+  } else {
+    worker.wakeup_fd = static_cast<grpc_cached_wakeup_fd*>(
+        gpr_malloc(sizeof(*worker.wakeup_fd)));
+    error = grpc_wakeup_fd_init(&worker.wakeup_fd->fd);
+    fork_fd_list_add_wakeup_fd(worker.wakeup_fd);
+    if (error != GRPC_ERROR_NONE) {
+      GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
+      return error;
+    }
+  }
+  worker.kicked_specifically = 0;
+  /* If we're shutting down then we don't execute any extended work */
+  if (pollset->shutting_down) {
+    GPR_TIMER_MARK("pollset_work.shutting_down", 0);
+    goto done;
+  }
+  /* Start polling, and keep doing so while we're being asked to
+     re-evaluate our pollers (this allows poll() based pollers to
+     ensure they don't miss wakeups) */
+  keep_polling = 1;
+  gpr_tls_set(&g_current_thread_poller, (intptr_t)pollset);
+  while (keep_polling) {
+    keep_polling = 0;
+    if (!pollset->kicked_without_pollers ||
+        deadline <= grpc_core::ExecCtx::Get()->Now()) {
+      if (!added_worker) {
+        push_front_worker(pollset, &worker);
+        added_worker = 1;
+        gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
+      }
+      GPR_TIMER_SCOPE("maybe_work_and_unlock", 0);
+#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
+#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
+
+      int timeout;
+      int r;
+      size_t i, fd_count;
+      nfds_t pfd_count;
+      grpc_fd_watcher* watchers;
+      struct pollfd* pfds;
+
+      timeout = poll_deadline_to_millis_timeout(deadline);
+
+      if (pollset->fd_count + 2 <= inline_elements) {
+        pfds = pollfd_space;
+        watchers = watcher_space;
+      } else {
+        /* Allocate one buffer to hold both pfds and watchers arrays */
+        const size_t pfd_size = sizeof(*pfds) * (pollset->fd_count + 2);
+        const size_t watch_size = sizeof(*watchers) * (pollset->fd_count + 2);
+        void* buf = gpr_malloc(pfd_size + watch_size);
+        pfds = static_cast<struct pollfd*>(buf);
+        watchers = static_cast<grpc_fd_watcher*>(
+            (void*)(static_cast<char*>(buf) + pfd_size));
+      }
+
+      fd_count = 0;
+      pfd_count = 1;
+      pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker.wakeup_fd->fd);
+      pfds[0].events = POLLIN;
+      pfds[0].revents = 0;
+      for (i = 0; i < pollset->fd_count; i++) {
+        if (fd_is_orphaned(pollset->fds[i]) ||
+            gpr_atm_no_barrier_load(&pollset->fds[i]->pollhup) == 1) {
+          GRPC_FD_UNREF(pollset->fds[i], "multipoller");
+        } else {
+          pollset->fds[fd_count++] = pollset->fds[i];
+          watchers[pfd_count].fd = pollset->fds[i];
+          GRPC_FD_REF(watchers[pfd_count].fd, "multipoller_start");
+          pfds[pfd_count].fd = pollset->fds[i]->fd;
+          pfds[pfd_count].revents = 0;
+          pfd_count++;
+        }
+      }
+      pollset->fd_count = fd_count;
+      gpr_mu_unlock(&pollset->mu);
+
+      for (i = 1; i < pfd_count; i++) {
+        grpc_fd* fd = watchers[i].fd;
+        pfds[i].events = static_cast<short>(
+            fd_begin_poll(fd, pollset, &worker, POLLIN, POLLOUT, &watchers[i]));
+        GRPC_FD_UNREF(fd, "multipoller_start");
+      }
+
+      /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+         even going into the blocking annotation if possible */
+      GRPC_SCHEDULING_START_BLOCKING_REGION;
+      GRPC_STATS_INC_SYSCALL_POLL();
+      r = grpc_poll_function(pfds, pfd_count, timeout);
+      GRPC_SCHEDULING_END_BLOCKING_REGION;
+
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+        gpr_log(GPR_INFO, "%p poll=%d", pollset, r);
+      }
+
+      if (r < 0) {
+        if (errno != EINTR) {
+          work_combine_error(&error, GRPC_OS_ERROR(errno, "poll"));
+        }
+
+        for (i = 1; i < pfd_count; i++) {
+          if (watchers[i].fd == nullptr) {
+            fd_end_poll(&watchers[i], 0, 0);
+          } else {
+            // Wake up all the file descriptors, if we have an invalid one
+            // we can identify it on the next pollset_work()
+            fd_end_poll(&watchers[i], 1, 1);
+          }
+        }
+      } else if (r == 0) {
+        for (i = 1; i < pfd_count; i++) {
+          fd_end_poll(&watchers[i], 0, 0);
+        }
+      } else {
+        if (pfds[0].revents & POLLIN_CHECK) {
+          if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+            gpr_log(GPR_INFO, "%p: got_wakeup", pollset);
+          }
+          work_combine_error(
+              &error, grpc_wakeup_fd_consume_wakeup(&worker.wakeup_fd->fd));
+        }
+        for (i = 1; i < pfd_count; i++) {
+          if (watchers[i].fd == nullptr) {
+            fd_end_poll(&watchers[i], 0, 0);
+          } else {
+            if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+              gpr_log(GPR_INFO, "%p got_event: %d r:%d w:%d [%d]", pollset,
+                      pfds[i].fd, (pfds[i].revents & POLLIN_CHECK) != 0,
+                      (pfds[i].revents & POLLOUT_CHECK) != 0, pfds[i].revents);
+            }
+            /* This is a mitigation to prevent poll() from spinning on a
+             ** POLLHUP https://github.com/grpc/grpc/pull/13665
+             */
+            if (pfds[i].revents & POLLHUP) {
+              gpr_atm_no_barrier_store(&watchers[i].fd->pollhup, 1);
+            }
+            fd_end_poll(&watchers[i], pfds[i].revents & POLLIN_CHECK,
+                        pfds[i].revents & POLLOUT_CHECK);
+          }
+        }
+      }
+
+      if (pfds != pollfd_space) {
+        /* pfds and watchers are in the same memory block pointed to by pfds */
+        gpr_free(pfds);
+      }
+
+      locked = 0;
+    } else {
+      GPR_TIMER_MARK("pollset_work.kicked_without_pollers", 0);
+      pollset->kicked_without_pollers = 0;
+    }
+  /* Finished execution - start cleaning up.
+     Note that we may arrive here from outside the enclosing while() loop.
+     In that case we won't loop though as we haven't added worker to the
+     worker list, which means nobody could ask us to re-evaluate polling). */
+  done:
+    if (!locked) {
+      queued_work |= grpc_core::ExecCtx::Get()->Flush();
+      gpr_mu_lock(&pollset->mu);
+      locked = 1;
+    }
+    /* If we're forced to re-evaluate polling (via pollset_kick with
+       GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) then we land here and force
+       a loop */
+    if (worker.reevaluate_polling_on_wakeup && error == GRPC_ERROR_NONE) {
+      worker.reevaluate_polling_on_wakeup = 0;
+      pollset->kicked_without_pollers = 0;
+      if (queued_work || worker.kicked_specifically) {
+        /* If there's queued work on the list, then set the deadline to be
+           immediate so we get back out of the polling loop quickly */
+        deadline = 0;
+      }
+      keep_polling = 1;
+    }
+  }
+  gpr_tls_set(&g_current_thread_poller, 0);
+  if (added_worker) {
+    remove_worker(pollset, &worker);
+    gpr_tls_set(&g_current_thread_worker, 0);
+  }
+  /* release wakeup fd to the local pool */
+  worker.wakeup_fd->next = pollset->local_wakeup_cache;
+  pollset->local_wakeup_cache = worker.wakeup_fd;
+  /* check shutdown conditions */
+  if (pollset->shutting_down) {
+    if (pollset_has_workers(pollset)) {
+      pollset_kick(pollset, nullptr);
+    } else if (!pollset->called_shutdown && !pollset_has_observers(pollset)) {
+      pollset->called_shutdown = 1;
+      gpr_mu_unlock(&pollset->mu);
+      finish_shutdown(pollset);
+      grpc_core::ExecCtx::Get()->Flush();
+      /* Continuing to access pollset here is safe -- it is the caller's
+       * responsibility to not destroy when it has outstanding calls to
+       * pollset_work.
+       * TODO(dklempner): Can we refactor the shutdown logic to avoid this? */
+      gpr_mu_lock(&pollset->mu);
+    }
+  }
+  if (worker_hdl) *worker_hdl = nullptr;
+  GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
+  return error;
+}
+
+static void pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  GPR_ASSERT(!pollset->shutting_down);
+  pollset->shutting_down = 1;
+  pollset->shutdown_done = closure;
+  pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+  if (!pollset->called_shutdown && !pollset_has_observers(pollset)) {
+    pollset->called_shutdown = 1;
+    finish_shutdown(pollset);
+  }
+}
+
+static int poll_deadline_to_millis_timeout(grpc_millis deadline) {
+  if (deadline == GRPC_MILLIS_INF_FUTURE) return -1;
+  if (deadline == 0) return 0;
+  grpc_millis n = deadline - grpc_core::ExecCtx::Get()->Now();
+  if (n < 0) return 0;
+  if (n > INT_MAX) return -1;
+  return static_cast<int>(n);
+}
+
+/*******************************************************************************
+ * pollset_set_posix.c
+ */
+
+static grpc_pollset_set* pollset_set_create(void) {
+  grpc_pollset_set* pollset_set =
+      static_cast<grpc_pollset_set*>(gpr_zalloc(sizeof(*pollset_set)));
+  gpr_mu_init(&pollset_set->mu);
+  return pollset_set;
+}
+
+static void pollset_set_destroy(grpc_pollset_set* pollset_set) {
+  size_t i;
+  gpr_mu_destroy(&pollset_set->mu);
+  for (i = 0; i < pollset_set->fd_count; i++) {
+    GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set");
+  }
+  for (i = 0; i < pollset_set->pollset_count; i++) {
+    grpc_pollset* pollset = pollset_set->pollsets[i];
+    gpr_mu_lock(&pollset->mu);
+    pollset->pollset_set_count--;
+    /* check shutdown */
+    if (pollset->shutting_down && !pollset->called_shutdown &&
+        !pollset_has_observers(pollset)) {
+      pollset->called_shutdown = 1;
+      gpr_mu_unlock(&pollset->mu);
+      finish_shutdown(pollset);
+    } else {
+      gpr_mu_unlock(&pollset->mu);
+    }
+  }
+  gpr_free(pollset_set->pollsets);
+  gpr_free(pollset_set->pollset_sets);
+  gpr_free(pollset_set->fds);
+  gpr_free(pollset_set);
+}
+
+static void pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {
+  size_t i, j;
+  gpr_mu_lock(&pollset->mu);
+  pollset->pollset_set_count++;
+  gpr_mu_unlock(&pollset->mu);
+  gpr_mu_lock(&pollset_set->mu);
+  if (pollset_set->pollset_count == pollset_set->pollset_capacity) {
+    pollset_set->pollset_capacity =
+        GPR_MAX(8, 2 * pollset_set->pollset_capacity);
+    pollset_set->pollsets = static_cast<grpc_pollset**>(gpr_realloc(
+        pollset_set->pollsets,
+        pollset_set->pollset_capacity * sizeof(*pollset_set->pollsets)));
+  }
+  pollset_set->pollsets[pollset_set->pollset_count++] = pollset;
+  for (i = 0, j = 0; i < pollset_set->fd_count; i++) {
+    if (fd_is_orphaned(pollset_set->fds[i])) {
+      GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set");
+    } else {
+      pollset_add_fd(pollset, pollset_set->fds[i]);
+      pollset_set->fds[j++] = pollset_set->fds[i];
+    }
+  }
+  pollset_set->fd_count = j;
+  gpr_mu_unlock(&pollset_set->mu);
+}
+
+static void pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {
+  size_t i;
+  gpr_mu_lock(&pollset_set->mu);
+  for (i = 0; i < pollset_set->pollset_count; i++) {
+    if (pollset_set->pollsets[i] == pollset) {
+      pollset_set->pollset_count--;
+      GPR_SWAP(grpc_pollset*, pollset_set->pollsets[i],
+               pollset_set->pollsets[pollset_set->pollset_count]);
+      break;
+    }
+  }
+  gpr_mu_unlock(&pollset_set->mu);
+  gpr_mu_lock(&pollset->mu);
+  pollset->pollset_set_count--;
+  /* check shutdown */
+  if (pollset->shutting_down && !pollset->called_shutdown &&
+      !pollset_has_observers(pollset)) {
+    pollset->called_shutdown = 1;
+    gpr_mu_unlock(&pollset->mu);
+    finish_shutdown(pollset);
+  } else {
+    gpr_mu_unlock(&pollset->mu);
+  }
+}
+
+static void pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {
+  size_t i, j;
+  gpr_mu_lock(&bag->mu);
+  if (bag->pollset_set_count == bag->pollset_set_capacity) {
+    bag->pollset_set_capacity = GPR_MAX(8, 2 * bag->pollset_set_capacity);
+    bag->pollset_sets = static_cast<grpc_pollset_set**>(
+        gpr_realloc(bag->pollset_sets,
+                    bag->pollset_set_capacity * sizeof(*bag->pollset_sets)));
+  }
+  bag->pollset_sets[bag->pollset_set_count++] = item;
+  for (i = 0, j = 0; i < bag->fd_count; i++) {
+    if (fd_is_orphaned(bag->fds[i])) {
+      GRPC_FD_UNREF(bag->fds[i], "pollset_set");
+    } else {
+      pollset_set_add_fd(item, bag->fds[i]);
+      bag->fds[j++] = bag->fds[i];
+    }
+  }
+  bag->fd_count = j;
+  gpr_mu_unlock(&bag->mu);
+}
+
+static void pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {
+  size_t i;
+  gpr_mu_lock(&bag->mu);
+  for (i = 0; i < bag->pollset_set_count; i++) {
+    if (bag->pollset_sets[i] == item) {
+      bag->pollset_set_count--;
+      GPR_SWAP(grpc_pollset_set*, bag->pollset_sets[i],
+               bag->pollset_sets[bag->pollset_set_count]);
+      break;
+    }
+  }
+  gpr_mu_unlock(&bag->mu);
+}
+
+static void pollset_set_add_fd(grpc_pollset_set* pollset_set, grpc_fd* fd) {
+  size_t i;
+  gpr_mu_lock(&pollset_set->mu);
+  if (pollset_set->fd_count == pollset_set->fd_capacity) {
+    pollset_set->fd_capacity = GPR_MAX(8, 2 * pollset_set->fd_capacity);
+    pollset_set->fds = static_cast<grpc_fd**>(
+        gpr_realloc(pollset_set->fds,
+                    pollset_set->fd_capacity * sizeof(*pollset_set->fds)));
+  }
+  GRPC_FD_REF(fd, "pollset_set");
+  pollset_set->fds[pollset_set->fd_count++] = fd;
+  for (i = 0; i < pollset_set->pollset_count; i++) {
+    pollset_add_fd(pollset_set->pollsets[i], fd);
+  }
+  for (i = 0; i < pollset_set->pollset_set_count; i++) {
+    pollset_set_add_fd(pollset_set->pollset_sets[i], fd);
+  }
+  gpr_mu_unlock(&pollset_set->mu);
+}
+
+static void pollset_set_del_fd(grpc_pollset_set* pollset_set, grpc_fd* fd) {
+  size_t i;
+  gpr_mu_lock(&pollset_set->mu);
+  for (i = 0; i < pollset_set->fd_count; i++) {
+    if (pollset_set->fds[i] == fd) {
+      pollset_set->fd_count--;
+      GPR_SWAP(grpc_fd*, pollset_set->fds[i],
+               pollset_set->fds[pollset_set->fd_count]);
+      GRPC_FD_UNREF(fd, "pollset_set");
+      break;
+    }
+  }
+  for (i = 0; i < pollset_set->pollset_set_count; i++) {
+    pollset_set_del_fd(pollset_set->pollset_sets[i], fd);
+  }
+  gpr_mu_unlock(&pollset_set->mu);
+}
+
+/*******************************************************************************
+ * event engine binding
+ */
+
+static bool is_any_background_poller_thread(void) { return false; }
+
+static void shutdown_background_closure(void) {}
+
+static bool add_closure_to_background_poller(grpc_closure* /*closure*/,
+                                             grpc_error* /*error*/) {
+  return false;
+}
+
+static void shutdown_engine(void) {
+  pollset_global_shutdown();
+  if (track_fds_for_fork) {
+    gpr_mu_destroy(&fork_fd_list_mu);
+    grpc_core::Fork::SetResetChildPollingEngineFunc(nullptr);
+  }
+}
+
+static const grpc_event_engine_vtable vtable = {
+    sizeof(grpc_pollset),
+    false,
+    false,
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_notify_on_error,
+    fd_set_readable,
+    fd_set_writable,
+    fd_set_error,
+    fd_is_shutdown,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    is_any_background_poller_thread,
+    shutdown_background_closure,
+    shutdown_engine,
+    add_closure_to_background_poller,
+};
+
+/* Called by the child process's post-fork handler to close open fds, including
+ * worker wakeup fds. This allows gRPC to shutdown in the child process without
+ * interfering with connections or RPCs ongoing in the parent. */
+static void reset_event_manager_on_fork() {
+  gpr_mu_lock(&fork_fd_list_mu);
+  while (fork_fd_list_head != nullptr) {
+    if (fork_fd_list_head->fd != nullptr) {
+      if (!fork_fd_list_head->fd->closed) {
+        close(fork_fd_list_head->fd->fd);
+      }
+      fork_fd_list_head->fd->fd = -1;
+    } else {
+      close(fork_fd_list_head->cached_wakeup_fd->fd.read_fd);
+      fork_fd_list_head->cached_wakeup_fd->fd.read_fd = -1;
+      close(fork_fd_list_head->cached_wakeup_fd->fd.write_fd);
+      fork_fd_list_head->cached_wakeup_fd->fd.write_fd = -1;
+    }
+    fork_fd_list_head = fork_fd_list_head->next;
+  }
+  gpr_mu_unlock(&fork_fd_list_mu);
+}
+
+const grpc_event_engine_vtable* grpc_init_poll_posix(
+    bool /*explicit_request*/) {
+  if (!grpc_has_wakeup_fd()) {
+    gpr_log(GPR_ERROR, "Skipping poll because of no wakeup fd.");
+    return nullptr;
+  }
+  if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
+    return nullptr;
+  }
+  if (grpc_core::Fork::Enabled()) {
+    track_fds_for_fork = true;
+    gpr_mu_init(&fork_fd_list_mu);
+    grpc_core::Fork::SetResetChildPollingEngineFunc(
+        reset_event_manager_on_fork);
+  }
+  return &vtable;
+}
+
+#endif /* GRPC_POSIX_SOCKET_EV_POLL */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.h
new file mode 100644
index 0000000..ab3cd90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_poll_posix.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+
+const grpc_event_engine_vtable* grpc_init_poll_posix(bool explicit_request);
+const grpc_event_engine_vtable* grpc_init_poll_cv_posix(bool explicit_request);
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_POLL_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.cc
new file mode 100644
index 0000000..02e4da1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.cc	
@@ -0,0 +1,418 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_EV
+
+#include "src/core/lib/iomgr/ev_posix.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/iomgr/ev_epoll1_linux.h"
+#include "src/core/lib/iomgr/ev_epollex_linux.h"
+#include "src/core/lib/iomgr/ev_poll_posix.h"
+#include "src/core/lib/iomgr/internal_errqueue.h"
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(
+    grpc_poll_strategy, "all",
+    "Declares which polling engines to try when starting gRPC. "
+    "This is a comma-separated list of engines, which are tried in priority "
+    "order first -> last.")
+
+grpc_core::DebugOnlyTraceFlag grpc_polling_trace(
+    false, "polling"); /* Disabled by default */
+
+/* Traces fd create/close operations */
+grpc_core::DebugOnlyTraceFlag grpc_fd_trace(false, "fd_trace");
+grpc_core::DebugOnlyTraceFlag grpc_trace_fd_refcount(false, "fd_refcount");
+grpc_core::DebugOnlyTraceFlag grpc_polling_api_trace(false, "polling_api");
+
+// Polling API trace only enabled in debug builds
+#ifndef NDEBUG
+#define GRPC_POLLING_API_TRACE(format, ...)                  \
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_api_trace)) {     \
+    gpr_log(GPR_INFO, "(polling-api) " format, __VA_ARGS__); \
+  }
+#else
+#define GRPC_POLLING_API_TRACE(...)
+#endif  // NDEBUG
+
+/** Default poll() function - a pointer so that it can be overridden by some
+ *  tests */
+#ifndef GPR_AIX
+grpc_poll_function_type grpc_poll_function = poll;
+#else
+int aix_poll(struct pollfd fds[], nfds_t nfds, int timeout) {
+  return poll(fds, nfds, timeout);
+}
+grpc_poll_function_type grpc_poll_function = aix_poll;
+#endif  // GPR_AIX
+
+grpc_wakeup_fd grpc_global_wakeup_fd;
+
+static const grpc_event_engine_vtable* g_event_engine = nullptr;
+static const char* g_poll_strategy_name = nullptr;
+
+typedef const grpc_event_engine_vtable* (*event_engine_factory_fn)(
+    bool explicit_request);
+
+typedef struct {
+  const char* name;
+  event_engine_factory_fn factory;
+} event_engine_factory;
+
+namespace {
+
+grpc_poll_function_type real_poll_function;
+
+int dummy_poll(struct pollfd fds[], nfds_t nfds, int timeout) {
+  if (timeout == 0) {
+    return real_poll_function(fds, nfds, 0);
+  } else {
+    gpr_log(GPR_ERROR, "Attempted a blocking poll when declared non-polling.");
+    GPR_ASSERT(false);
+    return -1;
+  }
+}
+
+const grpc_event_engine_vtable* init_non_polling(bool explicit_request) {
+  if (!explicit_request) {
+    return nullptr;
+  }
+  // return the simplest engine as a dummy but also override the poller
+  auto ret = grpc_init_poll_posix(explicit_request);
+  real_poll_function = grpc_poll_function;
+  grpc_poll_function = dummy_poll;
+
+  return ret;
+}
+}  // namespace
+
+#define ENGINE_HEAD_CUSTOM "head_custom"
+#define ENGINE_TAIL_CUSTOM "tail_custom"
+
+// The global array of event-engine factories. Each entry is a pair with a name
+// and an event-engine generator function (nullptr if there is no generator
+// registered for this name). The middle entries are the engines predefined by
+// open-source gRPC. The head entries represent an opportunity for specific
+// high-priority custom pollers to be added by the initializer plugins of
+// custom-built gRPC libraries. The tail entries represent the same, but for
+// low-priority custom pollers. The actual poller selected is either the first
+// available one in the list if no specific poller is requested, or the first
+// specific poller that is requested by name in the GRPC_POLL_STRATEGY
+// environment variable if that variable is set (which should be a
+// comma-separated list of one or more event engine names)
+static event_engine_factory g_factories[] = {
+    {ENGINE_HEAD_CUSTOM, nullptr},        {ENGINE_HEAD_CUSTOM, nullptr},
+    {ENGINE_HEAD_CUSTOM, nullptr},        {ENGINE_HEAD_CUSTOM, nullptr},
+    {"epollex", grpc_init_epollex_linux}, {"epoll1", grpc_init_epoll1_linux},
+    {"poll", grpc_init_poll_posix},       {"none", init_non_polling},
+    {ENGINE_TAIL_CUSTOM, nullptr},        {ENGINE_TAIL_CUSTOM, nullptr},
+    {ENGINE_TAIL_CUSTOM, nullptr},        {ENGINE_TAIL_CUSTOM, nullptr},
+};
+
+static void add(const char* beg, const char* end, char*** ss, size_t* ns) {
+  size_t n = *ns;
+  size_t np = n + 1;
+  char* s;
+  size_t len;
+  GPR_ASSERT(end >= beg);
+  len = static_cast<size_t>(end - beg);
+  s = static_cast<char*>(gpr_malloc(len + 1));
+  memcpy(s, beg, len);
+  s[len] = 0;
+  *ss = static_cast<char**>(gpr_realloc(*ss, sizeof(char**) * np));
+  (*ss)[n] = s;
+  *ns = np;
+}
+
+static void split(const char* s, char*** ss, size_t* ns) {
+  const char* c = strchr(s, ',');
+  if (c == nullptr) {
+    add(s, s + strlen(s), ss, ns);
+  } else {
+    add(s, c, ss, ns);
+    split(c + 1, ss, ns);
+  }
+}
+
+static bool is(const char* want, const char* have) {
+  return 0 == strcmp(want, "all") || 0 == strcmp(want, have);
+}
+
+static void try_engine(const char* engine) {
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(g_factories); i++) {
+    if (g_factories[i].factory != nullptr && is(engine, g_factories[i].name)) {
+      if ((g_event_engine = g_factories[i].factory(
+               0 == strcmp(engine, g_factories[i].name)))) {
+        g_poll_strategy_name = g_factories[i].name;
+        gpr_log(GPR_DEBUG, "Using polling engine: %s", g_factories[i].name);
+        return;
+      }
+    }
+  }
+}
+
+/* Call this before calling grpc_event_engine_init() */
+void grpc_register_event_engine_factory(const char* name,
+                                        event_engine_factory_fn factory,
+                                        bool add_at_head) {
+  const char* custom_match =
+      add_at_head ? ENGINE_HEAD_CUSTOM : ENGINE_TAIL_CUSTOM;
+
+  // Overwrite an existing registration if already registered
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(g_factories); i++) {
+    if (0 == strcmp(name, g_factories[i].name)) {
+      g_factories[i].factory = factory;
+      return;
+    }
+  }
+
+  // Otherwise fill in an available custom slot
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(g_factories); i++) {
+    if (0 == strcmp(g_factories[i].name, custom_match)) {
+      g_factories[i].name = name;
+      g_factories[i].factory = factory;
+      return;
+    }
+  }
+
+  // Otherwise fail
+  GPR_ASSERT(false);
+}
+
+/*If grpc_event_engine_init() has been called, returns the poll_strategy_name.
+ * Otherwise, returns nullptr. */
+const char* grpc_get_poll_strategy_name() { return g_poll_strategy_name; }
+
+void grpc_event_engine_init(void) {
+  grpc_core::UniquePtr<char> value = GPR_GLOBAL_CONFIG_GET(grpc_poll_strategy);
+
+  char** strings = nullptr;
+  size_t nstrings = 0;
+  split(value.get(), &strings, &nstrings);
+
+  for (size_t i = 0; g_event_engine == nullptr && i < nstrings; i++) {
+    try_engine(strings[i]);
+  }
+
+  for (size_t i = 0; i < nstrings; i++) {
+    gpr_free(strings[i]);
+  }
+  gpr_free(strings);
+
+  if (g_event_engine == nullptr) {
+    gpr_log(GPR_ERROR, "No event engine could be initialized from %s",
+            value.get());
+    abort();
+  }
+}
+
+void grpc_event_engine_shutdown(void) {
+  g_event_engine->shutdown_engine();
+  g_event_engine = nullptr;
+}
+
+bool grpc_event_engine_can_track_errors(void) {
+  /* Only track errors if platform supports errqueue. */
+  if (grpc_core::kernel_supports_errqueue()) {
+    return g_event_engine->can_track_err;
+  }
+  return false;
+}
+
+bool grpc_event_engine_run_in_background(void) {
+  // g_event_engine is nullptr when using a custom iomgr.
+  return g_event_engine != nullptr && g_event_engine->run_in_background;
+}
+
+grpc_fd* grpc_fd_create(int fd, const char* name, bool track_err) {
+  GRPC_POLLING_API_TRACE("fd_create(%d, %s, %d)", fd, name, track_err);
+  GRPC_FD_TRACE("fd_create(%d, %s, %d)", fd, name, track_err);
+  return g_event_engine->fd_create(
+      fd, name, track_err && grpc_event_engine_can_track_errors());
+}
+
+int grpc_fd_wrapped_fd(grpc_fd* fd) {
+  return g_event_engine->fd_wrapped_fd(fd);
+}
+
+void grpc_fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                    const char* reason) {
+  GRPC_POLLING_API_TRACE("fd_orphan(%d, %p, %p, %s)", grpc_fd_wrapped_fd(fd),
+                         on_done, release_fd, reason);
+  GRPC_FD_TRACE("grpc_fd_orphan, fd:%d closed", grpc_fd_wrapped_fd(fd));
+
+  g_event_engine->fd_orphan(fd, on_done, release_fd, reason);
+}
+
+void grpc_fd_shutdown(grpc_fd* fd, grpc_error* why) {
+  GRPC_POLLING_API_TRACE("fd_shutdown(%d)", grpc_fd_wrapped_fd(fd));
+  GRPC_FD_TRACE("fd_shutdown(%d)", grpc_fd_wrapped_fd(fd));
+  g_event_engine->fd_shutdown(fd, why);
+}
+
+bool grpc_fd_is_shutdown(grpc_fd* fd) {
+  return g_event_engine->fd_is_shutdown(fd);
+}
+
+void grpc_fd_notify_on_read(grpc_fd* fd, grpc_closure* closure) {
+  g_event_engine->fd_notify_on_read(fd, closure);
+}
+
+void grpc_fd_notify_on_write(grpc_fd* fd, grpc_closure* closure) {
+  g_event_engine->fd_notify_on_write(fd, closure);
+}
+
+void grpc_fd_notify_on_error(grpc_fd* fd, grpc_closure* closure) {
+  g_event_engine->fd_notify_on_error(fd, closure);
+}
+
+void grpc_fd_set_readable(grpc_fd* fd) { g_event_engine->fd_set_readable(fd); }
+
+void grpc_fd_set_writable(grpc_fd* fd) { g_event_engine->fd_set_writable(fd); }
+
+void grpc_fd_set_error(grpc_fd* fd) { g_event_engine->fd_set_error(fd); }
+
+static size_t pollset_size(void) { return g_event_engine->pollset_size; }
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  GRPC_POLLING_API_TRACE("pollset_init(%p)", pollset);
+  g_event_engine->pollset_init(pollset, mu);
+}
+
+static void pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  GRPC_POLLING_API_TRACE("pollset_shutdown(%p)", pollset);
+  g_event_engine->pollset_shutdown(pollset, closure);
+}
+
+static void pollset_destroy(grpc_pollset* pollset) {
+  GRPC_POLLING_API_TRACE("pollset_destroy(%p)", pollset);
+  g_event_engine->pollset_destroy(pollset);
+}
+
+static grpc_error* pollset_work(grpc_pollset* pollset,
+                                grpc_pollset_worker** worker,
+                                grpc_millis deadline) {
+  GRPC_POLLING_API_TRACE("pollset_work(%p, %" PRId64 ") begin", pollset,
+                         deadline);
+  grpc_error* err = g_event_engine->pollset_work(pollset, worker, deadline);
+  GRPC_POLLING_API_TRACE("pollset_work(%p, %" PRId64 ") end", pollset,
+                         deadline);
+  return err;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* pollset,
+                                grpc_pollset_worker* specific_worker) {
+  GRPC_POLLING_API_TRACE("pollset_kick(%p, %p)", pollset, specific_worker);
+  return g_event_engine->pollset_kick(pollset, specific_worker);
+}
+
+void grpc_pollset_add_fd(grpc_pollset* pollset, struct grpc_fd* fd) {
+  GRPC_POLLING_API_TRACE("pollset_add_fd(%p, %d)", pollset,
+                         grpc_fd_wrapped_fd(fd));
+  g_event_engine->pollset_add_fd(pollset, fd);
+}
+
+void pollset_global_init() {}
+void pollset_global_shutdown() {}
+
+grpc_pollset_vtable grpc_posix_pollset_vtable = {
+    pollset_global_init, pollset_global_shutdown,
+    pollset_init,        pollset_shutdown,
+    pollset_destroy,     pollset_work,
+    pollset_kick,        pollset_size};
+
+static grpc_pollset_set* pollset_set_create(void) {
+  grpc_pollset_set* pss = g_event_engine->pollset_set_create();
+  GRPC_POLLING_API_TRACE("pollset_set_create(%p)", pss);
+  return pss;
+}
+
+static void pollset_set_destroy(grpc_pollset_set* pollset_set) {
+  GRPC_POLLING_API_TRACE("pollset_set_destroy(%p)", pollset_set);
+  g_event_engine->pollset_set_destroy(pollset_set);
+}
+
+static void pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {
+  GRPC_POLLING_API_TRACE("pollset_set_add_pollset(%p, %p)", pollset_set,
+                         pollset);
+  g_event_engine->pollset_set_add_pollset(pollset_set, pollset);
+}
+
+static void pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {
+  GRPC_POLLING_API_TRACE("pollset_set_del_pollset(%p, %p)", pollset_set,
+                         pollset);
+  g_event_engine->pollset_set_del_pollset(pollset_set, pollset);
+}
+
+static void pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {
+  GRPC_POLLING_API_TRACE("pollset_set_add_pollset_set(%p, %p)", bag, item);
+  g_event_engine->pollset_set_add_pollset_set(bag, item);
+}
+
+static void pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {
+  GRPC_POLLING_API_TRACE("pollset_set_del_pollset_set(%p, %p)", bag, item);
+  g_event_engine->pollset_set_del_pollset_set(bag, item);
+}
+
+grpc_pollset_set_vtable grpc_posix_pollset_set_vtable = {
+    pollset_set_create,          pollset_set_destroy,
+    pollset_set_add_pollset,     pollset_set_del_pollset,
+    pollset_set_add_pollset_set, pollset_set_del_pollset_set};
+
+void grpc_pollset_set_add_fd(grpc_pollset_set* pollset_set, grpc_fd* fd) {
+  GRPC_POLLING_API_TRACE("pollset_set_add_fd(%p, %d)", pollset_set,
+                         grpc_fd_wrapped_fd(fd));
+  g_event_engine->pollset_set_add_fd(pollset_set, fd);
+}
+
+void grpc_pollset_set_del_fd(grpc_pollset_set* pollset_set, grpc_fd* fd) {
+  GRPC_POLLING_API_TRACE("pollset_set_del_fd(%p, %d)", pollset_set,
+                         grpc_fd_wrapped_fd(fd));
+  g_event_engine->pollset_set_del_fd(pollset_set, fd);
+}
+
+bool grpc_is_any_background_poller_thread(void) {
+  return g_event_engine->is_any_background_poller_thread();
+}
+
+bool grpc_add_closure_to_background_poller(grpc_closure* closure,
+                                           grpc_error* error) {
+  return g_event_engine->add_closure_to_background_poller(closure, error);
+}
+
+void grpc_shutdown_background_closure(void) {
+  g_event_engine->shutdown_background_closure();
+}
+
+#endif  // GRPC_POSIX_SOCKET_EV
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.h
new file mode 100644
index 0000000..84edabc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_posix.h	
@@ -0,0 +1,207 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EV_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_EV_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <poll.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_poll_strategy);
+
+extern grpc_core::DebugOnlyTraceFlag grpc_fd_trace; /* Disabled by default */
+extern grpc_core::DebugOnlyTraceFlag
+    grpc_polling_trace; /* Disabled by default */
+
+#define GRPC_FD_TRACE(format, ...)                        \
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_fd_trace)) {           \
+    gpr_log(GPR_INFO, "(fd-trace) " format, __VA_ARGS__); \
+  }
+
+typedef struct grpc_fd grpc_fd;
+
+typedef struct grpc_event_engine_vtable {
+  size_t pollset_size;
+  bool can_track_err;
+  bool run_in_background;
+
+  grpc_fd* (*fd_create)(int fd, const char* name, bool track_err);
+  int (*fd_wrapped_fd)(grpc_fd* fd);
+  void (*fd_orphan)(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                    const char* reason);
+  void (*fd_shutdown)(grpc_fd* fd, grpc_error* why);
+  void (*fd_notify_on_read)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_notify_on_write)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_notify_on_error)(grpc_fd* fd, grpc_closure* closure);
+  void (*fd_set_readable)(grpc_fd* fd);
+  void (*fd_set_writable)(grpc_fd* fd);
+  void (*fd_set_error)(grpc_fd* fd);
+  bool (*fd_is_shutdown)(grpc_fd* fd);
+
+  void (*pollset_init)(grpc_pollset* pollset, gpr_mu** mu);
+  void (*pollset_shutdown)(grpc_pollset* pollset, grpc_closure* closure);
+  void (*pollset_destroy)(grpc_pollset* pollset);
+  grpc_error* (*pollset_work)(grpc_pollset* pollset,
+                              grpc_pollset_worker** worker,
+                              grpc_millis deadline);
+  grpc_error* (*pollset_kick)(grpc_pollset* pollset,
+                              grpc_pollset_worker* specific_worker);
+  void (*pollset_add_fd)(grpc_pollset* pollset, struct grpc_fd* fd);
+
+  grpc_pollset_set* (*pollset_set_create)(void);
+  void (*pollset_set_destroy)(grpc_pollset_set* pollset_set);
+  void (*pollset_set_add_pollset)(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+  void (*pollset_set_del_pollset)(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+  void (*pollset_set_add_pollset_set)(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+  void (*pollset_set_del_pollset_set)(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+  void (*pollset_set_add_fd)(grpc_pollset_set* pollset_set, grpc_fd* fd);
+  void (*pollset_set_del_fd)(grpc_pollset_set* pollset_set, grpc_fd* fd);
+
+  bool (*is_any_background_poller_thread)(void);
+  void (*shutdown_background_closure)(void);
+  void (*shutdown_engine)(void);
+  bool (*add_closure_to_background_poller)(grpc_closure* closure,
+                                           grpc_error* error);
+} grpc_event_engine_vtable;
+
+/* register a new event engine factory */
+void grpc_register_event_engine_factory(
+    const char* name, const grpc_event_engine_vtable* (*factory)(bool),
+    bool add_at_head);
+
+void grpc_event_engine_init(void);
+void grpc_event_engine_shutdown(void);
+
+/* Return the name of the poll strategy */
+const char* grpc_get_poll_strategy_name();
+
+/* Returns true if polling engine can track errors separately, false otherwise.
+ * If this is true, fd can be created with track_err set. After this, error
+ * events will be reported using fd_notify_on_error. If it is not set, errors
+ * will continue to be reported through fd_notify_on_read and
+ * fd_notify_on_write.
+ */
+bool grpc_event_engine_can_track_errors();
+
+/* Returns true if polling engine runs in the background, false otherwise.
+ * Currently only 'epollbg' runs in the background.
+ */
+bool grpc_event_engine_run_in_background();
+
+/* Create a wrapped file descriptor.
+   Requires fd is a non-blocking file descriptor.
+   \a track_err if true means that error events would be tracked separately
+   using grpc_fd_notify_on_error. Currently, valid only for linux systems.
+   This takes ownership of closing fd. */
+grpc_fd* grpc_fd_create(int fd, const char* name, bool track_err);
+
+/* Return the wrapped fd, or -1 if it has been released or closed. */
+int grpc_fd_wrapped_fd(grpc_fd* fd);
+
+/* Releases fd to be asynchronously destroyed.
+   on_done is called when the underlying file descriptor is definitely close()d.
+   If on_done is NULL, no callback will be made.
+   If release_fd is not NULL, it's set to fd and fd will not be closed.
+   Requires: *fd initialized; no outstanding notify_on_read or
+   notify_on_write.
+   MUST NOT be called with a pollset lock taken */
+void grpc_fd_orphan(grpc_fd* fd, grpc_closure* on_done, int* release_fd,
+                    const char* reason);
+
+/* Has grpc_fd_shutdown been called on an fd? */
+bool grpc_fd_is_shutdown(grpc_fd* fd);
+
+/* Cause any current and future callbacks to fail. */
+void grpc_fd_shutdown(grpc_fd* fd, grpc_error* why);
+
+/* Register read interest, causing read_cb to be called once when fd becomes
+   readable, on deadline specified by deadline, or on shutdown triggered by
+   grpc_fd_shutdown.
+   read_cb will be called with read_cb_arg when *fd becomes readable.
+   read_cb is Called with status of GRPC_CALLBACK_SUCCESS if readable,
+   GRPC_CALLBACK_TIMED_OUT if the call timed out,
+   and CANCELLED if the call was cancelled.
+
+   Requires:This method must not be called before the read_cb for any previous
+   call runs. Edge triggered events are used whenever they are supported by the
+   underlying platform. This means that users must drain fd in read_cb before
+   calling notify_on_read again. Users are also expected to handle spurious
+   events, i.e read_cb is called while nothing can be readable from fd  */
+void grpc_fd_notify_on_read(grpc_fd* fd, grpc_closure* closure);
+
+/* Exactly the same semantics as above, except based on writable events.  */
+void grpc_fd_notify_on_write(grpc_fd* fd, grpc_closure* closure);
+
+/* Exactly the same semantics as above, except based on error events. track_err
+ * needs to have been set on grpc_fd_create */
+void grpc_fd_notify_on_error(grpc_fd* fd, grpc_closure* closure);
+
+/* Forcibly set the fd to be readable, resulting in the closure registered with
+ * grpc_fd_notify_on_read being invoked.
+ */
+void grpc_fd_set_readable(grpc_fd* fd);
+
+/* Forcibly set the fd to be writable, resulting in the closure registered with
+ * grpc_fd_notify_on_write being invoked.
+ */
+void grpc_fd_set_writable(grpc_fd* fd);
+
+/* Forcibly set the fd to have errored, resulting in the closure registered with
+ * grpc_fd_notify_on_error being invoked.
+ */
+void grpc_fd_set_error(grpc_fd* fd);
+
+/* pollset_posix functions */
+
+/* Add an fd to a pollset */
+void grpc_pollset_add_fd(grpc_pollset* pollset, struct grpc_fd* fd);
+
+/* pollset_set_posix functions */
+
+void grpc_pollset_set_add_fd(grpc_pollset_set* pollset_set, grpc_fd* fd);
+void grpc_pollset_set_del_fd(grpc_pollset_set* pollset_set, grpc_fd* fd);
+
+/* Returns true if the caller is a worker thread for any background poller. */
+bool grpc_is_any_background_poller_thread();
+
+/* Returns true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_add_closure_to_background_poller(grpc_closure* closure,
+                                           grpc_error* error);
+
+/* Shut down all the closures registered in the background poller. */
+void grpc_shutdown_background_closure();
+
+/* override to allow tests to hook poll() usage */
+typedef int (*grpc_poll_function_type)(struct pollfd*, nfds_t, int);
+extern grpc_poll_function_type grpc_poll_function;
+
+#endif /* GRPC_CORE_LIB_IOMGR_EV_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_windows.cc
new file mode 100644
index 0000000..e3f5715
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/ev_windows.cc	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/debug/trace.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_polling_trace(
+    false, "polling"); /* Disabled by default */
+
+#endif  // GRPC_WINSOCK_SOCKET
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.cc
new file mode 100644
index 0000000..e392a99
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.cc	
@@ -0,0 +1,224 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/profiling/timers.h"
+
+static void exec_ctx_run(grpc_closure* closure, grpc_error* error) {
+#ifndef NDEBUG
+  closure->scheduled = false;
+  if (grpc_trace_closure.enabled()) {
+    gpr_log(GPR_DEBUG, "running closure %p: created [%s:%d]: %s [%s:%d]",
+            closure, closure->file_created, closure->line_created,
+            closure->run ? "run" : "scheduled", closure->file_initiated,
+            closure->line_initiated);
+  }
+#endif
+  closure->cb(closure->cb_arg, error);
+#ifndef NDEBUG
+  if (grpc_trace_closure.enabled()) {
+    gpr_log(GPR_DEBUG, "closure %p finished", closure);
+  }
+#endif
+  GRPC_ERROR_UNREF(error);
+}
+
+static void exec_ctx_sched(grpc_closure* closure, grpc_error* error) {
+  grpc_closure_list_append(grpc_core::ExecCtx::Get()->closure_list(), closure,
+                           error);
+}
+
+static gpr_timespec g_start_time;
+static gpr_cycle_counter g_start_cycle;
+
+static grpc_millis timespan_to_millis_round_down(gpr_timespec ts) {
+  double x = GPR_MS_PER_SEC * static_cast<double>(ts.tv_sec) +
+             static_cast<double>(ts.tv_nsec) / GPR_NS_PER_MS;
+  if (x < 0) return 0;
+  if (x > GRPC_MILLIS_INF_FUTURE) return GRPC_MILLIS_INF_FUTURE;
+  return static_cast<grpc_millis>(x);
+}
+
+static grpc_millis timespec_to_millis_round_down(gpr_timespec ts) {
+  return timespan_to_millis_round_down(gpr_time_sub(ts, g_start_time));
+}
+
+static grpc_millis timespan_to_millis_round_up(gpr_timespec ts) {
+  double x = GPR_MS_PER_SEC * static_cast<double>(ts.tv_sec) +
+             static_cast<double>(ts.tv_nsec) / GPR_NS_PER_MS +
+             static_cast<double>(GPR_NS_PER_SEC - 1) /
+                 static_cast<double>(GPR_NS_PER_SEC);
+  if (x < 0) return 0;
+  if (x > GRPC_MILLIS_INF_FUTURE) return GRPC_MILLIS_INF_FUTURE;
+  return static_cast<grpc_millis>(x);
+}
+
+static grpc_millis timespec_to_millis_round_up(gpr_timespec ts) {
+  return timespan_to_millis_round_up(gpr_time_sub(ts, g_start_time));
+}
+
+gpr_timespec grpc_millis_to_timespec(grpc_millis millis,
+                                     gpr_clock_type clock_type) {
+  // special-case infinities as grpc_millis can be 32bit on some platforms
+  // while gpr_time_from_millis always takes an int64_t.
+  if (millis == GRPC_MILLIS_INF_FUTURE) {
+    return gpr_inf_future(clock_type);
+  }
+  if (millis == GRPC_MILLIS_INF_PAST) {
+    return gpr_inf_past(clock_type);
+  }
+
+  if (clock_type == GPR_TIMESPAN) {
+    return gpr_time_from_millis(millis, GPR_TIMESPAN);
+  }
+  return gpr_time_add(gpr_convert_clock_type(g_start_time, clock_type),
+                      gpr_time_from_millis(millis, GPR_TIMESPAN));
+}
+
+grpc_millis grpc_timespec_to_millis_round_down(gpr_timespec ts) {
+  return timespec_to_millis_round_down(
+      gpr_convert_clock_type(ts, g_start_time.clock_type));
+}
+
+grpc_millis grpc_timespec_to_millis_round_up(gpr_timespec ts) {
+  return timespec_to_millis_round_up(
+      gpr_convert_clock_type(ts, g_start_time.clock_type));
+}
+
+grpc_millis grpc_cycle_counter_to_millis_round_down(gpr_cycle_counter cycles) {
+  return timespan_to_millis_round_down(
+      gpr_cycle_counter_sub(cycles, g_start_cycle));
+}
+
+grpc_millis grpc_cycle_counter_to_millis_round_up(gpr_cycle_counter cycles) {
+  return timespan_to_millis_round_up(
+      gpr_cycle_counter_sub(cycles, g_start_cycle));
+}
+
+namespace grpc_core {
+GPR_TLS_CLASS_DEF(ExecCtx::exec_ctx_);
+GPR_TLS_CLASS_DEF(ApplicationCallbackExecCtx::callback_exec_ctx_);
+
+// WARNING: for testing purposes only!
+void ExecCtx::TestOnlyGlobalInit(gpr_timespec new_val) {
+  g_start_time = new_val;
+  gpr_tls_init(&exec_ctx_);
+}
+
+void ExecCtx::GlobalInit(void) {
+  // gpr_now(GPR_CLOCK_MONOTONIC) incurs a syscall. We don't actually know the
+  // exact cycle the time was captured, so we use the average of cycles before
+  // and after the syscall as the starting cycle.
+  const gpr_cycle_counter cycle_before = gpr_get_cycle_counter();
+  g_start_time = gpr_now(GPR_CLOCK_MONOTONIC);
+  const gpr_cycle_counter cycle_after = gpr_get_cycle_counter();
+  g_start_cycle = (cycle_before + cycle_after) / 2;
+  gpr_tls_init(&exec_ctx_);
+}
+
+bool ExecCtx::Flush() {
+  bool did_something = 0;
+  GPR_TIMER_SCOPE("grpc_exec_ctx_flush", 0);
+  for (;;) {
+    if (!grpc_closure_list_empty(closure_list_)) {
+      grpc_closure* c = closure_list_.head;
+      closure_list_.head = closure_list_.tail = nullptr;
+      while (c != nullptr) {
+        grpc_closure* next = c->next_data.next;
+        grpc_error* error = c->error_data.error;
+        did_something = true;
+        exec_ctx_run(c, error);
+        c = next;
+      }
+    } else if (!grpc_combiner_continue_exec_ctx()) {
+      break;
+    }
+  }
+  GPR_ASSERT(combiner_data_.active_combiner == nullptr);
+  return did_something;
+}
+
+grpc_millis ExecCtx::Now() {
+  if (!now_is_valid_) {
+    now_ = timespec_to_millis_round_down(gpr_now(GPR_CLOCK_MONOTONIC));
+    now_is_valid_ = true;
+  }
+  return now_;
+}
+
+void ExecCtx::Run(const DebugLocation& location, grpc_closure* closure,
+                  grpc_error* error) {
+  (void)location;
+  if (closure == nullptr) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+#ifndef NDEBUG
+  if (closure->scheduled) {
+    gpr_log(GPR_ERROR,
+            "Closure already scheduled. (closure: %p, created: [%s:%d], "
+            "previously scheduled at: [%s: %d], newly scheduled at [%s: %d]",
+            closure, closure->file_created, closure->line_created,
+            closure->file_initiated, closure->line_initiated, location.file(),
+            location.line());
+    abort();
+  }
+  closure->scheduled = true;
+  closure->file_initiated = location.file();
+  closure->line_initiated = location.line();
+  closure->run = false;
+  GPR_ASSERT(closure->cb != nullptr);
+#endif
+  exec_ctx_sched(closure, error);
+}
+
+void ExecCtx::RunList(const DebugLocation& location, grpc_closure_list* list) {
+  (void)location;
+  grpc_closure* c = list->head;
+  while (c != nullptr) {
+    grpc_closure* next = c->next_data.next;
+#ifndef NDEBUG
+    if (c->scheduled) {
+      gpr_log(GPR_ERROR,
+              "Closure already scheduled. (closure: %p, created: [%s:%d], "
+              "previously scheduled at: [%s: %d], newly scheduled at [%s:%d]",
+              c, c->file_created, c->line_created, c->file_initiated,
+              c->line_initiated, location.file(), location.line());
+      abort();
+    }
+    c->scheduled = true;
+    c->file_initiated = location.file();
+    c->line_initiated = location.line();
+    c->run = false;
+    GPR_ASSERT(c->cb != nullptr);
+#endif
+    exec_ctx_sched(c, c->error_data.error);
+    c = next;
+  }
+  list->head = list->tail = nullptr;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.h
new file mode 100644
index 0000000..4e746bc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/exec_ctx.h	
@@ -0,0 +1,368 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
+#define GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/fork.h"
+#include "src/core/lib/iomgr/closure.h"
+
+typedef int64_t grpc_millis;
+
+#define GRPC_MILLIS_INF_FUTURE INT64_MAX
+#define GRPC_MILLIS_INF_PAST INT64_MIN
+
+/** A combiner represents a list of work to be executed later.
+    Forward declared here to avoid a circular dependency with combiner.h. */
+typedef struct grpc_combiner grpc_combiner;
+
+/* This exec_ctx is ready to return: either pre-populated, or cached as soon as
+   the finish_check returns true */
+#define GRPC_EXEC_CTX_FLAG_IS_FINISHED 1
+/* The exec_ctx's thread is (potentially) owned by a call or channel: care
+   should be given to not delete said call/channel from this exec_ctx */
+#define GRPC_EXEC_CTX_FLAG_THREAD_RESOURCE_LOOP 2
+/* This exec ctx was initialized by an internal thread, and should not
+   be counted by fork handlers */
+#define GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD 4
+
+/* This application callback exec ctx was initialized by an internal thread, and
+   should not be counted by fork handlers */
+#define GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD 1
+
+gpr_timespec grpc_millis_to_timespec(grpc_millis millis, gpr_clock_type clock);
+grpc_millis grpc_timespec_to_millis_round_down(gpr_timespec timespec);
+grpc_millis grpc_timespec_to_millis_round_up(gpr_timespec timespec);
+grpc_millis grpc_cycle_counter_to_millis_round_down(gpr_cycle_counter cycles);
+grpc_millis grpc_cycle_counter_to_millis_round_up(gpr_cycle_counter cycles);
+
+namespace grpc_core {
+class Combiner;
+/** Execution context.
+ *  A bag of data that collects information along a callstack.
+ *  It is created on the stack at core entry points (public API or iomgr), and
+ *  stored internally as a thread-local variable.
+ *
+ *  Generally, to create an exec_ctx instance, add the following line at the top
+ *  of the public API entry point or at the start of a thread's work function :
+ *
+ *  grpc_core::ExecCtx exec_ctx;
+ *
+ *  Access the created ExecCtx instance using :
+ *  grpc_core::ExecCtx::Get()
+ *
+ *  Specific responsibilities (this may grow in the future):
+ *  - track a list of core work that needs to be delayed until the base of the
+ *    call stack (this provides a convenient mechanism to run callbacks
+ *    without worrying about locking issues)
+ *  - provide a decision maker (via IsReadyToFinish) that provides a
+ *    signal as to whether a borrowed thread should continue to do work or
+ *    should actively try to finish up and get this thread back to its owner
+ *
+ *  CONVENTIONS:
+ *  - Instance of this must ALWAYS be constructed on the stack, never
+ *    heap allocated.
+ *  - Do not pass exec_ctx as a parameter to a function. Always access it using
+ *    grpc_core::ExecCtx::Get().
+ *  - NOTE: In the future, the convention is likely to change to allow only one
+ *          ExecCtx on a thread's stack at the same time. The TODO below
+ *          discusses this plan in more detail.
+ *
+ * TODO(yashykt): Only allow one "active" ExecCtx on a thread at the same time.
+ *                Stage 1: If a new one is created on the stack, it should just
+ *                pass-through to the underlying ExecCtx deeper in the thread's
+ *                stack.
+ *                Stage 2: Assert if a 2nd one is ever created on the stack
+ *                since that implies a core re-entry outside of application
+ *                callbacks.
+ */
+class ExecCtx {
+ public:
+  /** Default Constructor */
+
+  ExecCtx() : flags_(GRPC_EXEC_CTX_FLAG_IS_FINISHED) {
+    grpc_core::Fork::IncExecCtxCount();
+    Set(this);
+  }
+
+  /** Parameterised Constructor */
+  ExecCtx(uintptr_t fl) : flags_(fl) {
+    if (!(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+      grpc_core::Fork::IncExecCtxCount();
+    }
+    Set(this);
+  }
+
+  /** Destructor */
+  virtual ~ExecCtx() {
+    flags_ |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
+    Flush();
+    Set(last_exec_ctx_);
+    if (!(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+      grpc_core::Fork::DecExecCtxCount();
+    }
+  }
+
+  /** Disallow copy and assignment operators */
+  ExecCtx(const ExecCtx&) = delete;
+  ExecCtx& operator=(const ExecCtx&) = delete;
+
+  unsigned starting_cpu() const { return starting_cpu_; }
+
+  struct CombinerData {
+    /* currently active combiner: updated only via combiner.c */
+    Combiner* active_combiner;
+    /* last active combiner in the active combiner list */
+    Combiner* last_combiner;
+  };
+
+  /** Only to be used by grpc-combiner code */
+  CombinerData* combiner_data() { return &combiner_data_; }
+
+  /** Return pointer to grpc_closure_list */
+  grpc_closure_list* closure_list() { return &closure_list_; }
+
+  /** Return flags */
+  uintptr_t flags() { return flags_; }
+
+  /** Checks if there is work to be done */
+  bool HasWork() {
+    return combiner_data_.active_combiner != nullptr ||
+           !grpc_closure_list_empty(closure_list_);
+  }
+
+  /** Flush any work that has been enqueued onto this grpc_exec_ctx.
+   *  Caller must guarantee that no interfering locks are held.
+   *  Returns true if work was performed, false otherwise.
+   */
+  bool Flush();
+
+  /** Returns true if we'd like to leave this execution context as soon as
+   *  possible: useful for deciding whether to do something more or not
+   *  depending on outside context.
+   */
+  bool IsReadyToFinish() {
+    if ((flags_ & GRPC_EXEC_CTX_FLAG_IS_FINISHED) == 0) {
+      if (CheckReadyToFinish()) {
+        flags_ |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
+        return true;
+      }
+      return false;
+    } else {
+      return true;
+    }
+  }
+
+  /** Returns the stored current time relative to start if valid,
+   *  otherwise refreshes the stored time, sets it valid and returns the new
+   *  value.
+   */
+  grpc_millis Now();
+
+  /** Invalidates the stored time value. A new time value will be set on calling
+   *  Now().
+   */
+  void InvalidateNow() { now_is_valid_ = false; }
+
+  /** To be used only by shutdown code in iomgr */
+  void SetNowIomgrShutdown() {
+    now_ = GRPC_MILLIS_INF_FUTURE;
+    now_is_valid_ = true;
+  }
+
+  /** To be used only for testing.
+   *  Sets the now value.
+   */
+  void TestOnlySetNow(grpc_millis new_val) {
+    now_ = new_val;
+    now_is_valid_ = true;
+  }
+
+  static void TestOnlyGlobalInit(gpr_timespec new_val);
+
+  /** Global initialization for ExecCtx. Called by iomgr. */
+  static void GlobalInit(void);
+
+  /** Global shutdown for ExecCtx. Called by iomgr. */
+  static void GlobalShutdown(void) { gpr_tls_destroy(&exec_ctx_); }
+
+  /** Gets pointer to current exec_ctx. */
+  static ExecCtx* Get() {
+    return reinterpret_cast<ExecCtx*>(gpr_tls_get(&exec_ctx_));
+  }
+
+  static void Set(ExecCtx* exec_ctx) {
+    gpr_tls_set(&exec_ctx_, reinterpret_cast<intptr_t>(exec_ctx));
+  }
+
+  static void Run(const DebugLocation& location, grpc_closure* closure,
+                  grpc_error* error);
+
+  static void RunList(const DebugLocation& location, grpc_closure_list* list);
+
+ protected:
+  /** Check if ready to finish. */
+  virtual bool CheckReadyToFinish() { return false; }
+
+  /** Disallow delete on ExecCtx. */
+  static void operator delete(void* /* p */) { abort(); }
+
+ private:
+  /** Set exec_ctx_ to exec_ctx. */
+
+  grpc_closure_list closure_list_ = GRPC_CLOSURE_LIST_INIT;
+  CombinerData combiner_data_ = {nullptr, nullptr};
+  uintptr_t flags_;
+
+  unsigned starting_cpu_ = gpr_cpu_current_cpu();
+
+  bool now_is_valid_ = false;
+  grpc_millis now_ = 0;
+
+  GPR_TLS_CLASS_DECL(exec_ctx_);
+  ExecCtx* last_exec_ctx_ = Get();
+};
+
+/** Application-callback execution context.
+ *  A bag of data that collects information along a callstack.
+ *  It is created on the stack at core entry points, and stored internally
+ *  as a thread-local variable.
+ *
+ *  There are three key differences between this structure and ExecCtx:
+ *    1. ApplicationCallbackExecCtx builds a list of application-level
+ *       callbacks, but ExecCtx builds a list of internal callbacks to invoke.
+ *    2. ApplicationCallbackExecCtx invokes its callbacks only at destruction;
+ *       there is no explicit Flush method.
+ *    3. If more than one ApplicationCallbackExecCtx is created on the thread's
+ *       stack, only the one closest to the base of the stack is actually
+ *       active and this is the only one that enqueues application callbacks.
+ *       (Unlike ExecCtx, it is not feasible to prevent multiple of these on the
+ *       stack since the executing application callback may itself enter core.
+ *       However, the new one created will just pass callbacks through to the
+ *       base one and those will not be executed until the return to the
+ *       destructor of the base one, preventing unlimited stack growth.)
+ *
+ *  This structure exists because application callbacks may themselves cause a
+ *  core re-entry (e.g., through a public API call) and if that call in turn
+ *  causes another application-callback, there could be arbitrarily growing
+ *  stacks of core re-entries. Instead, any application callbacks instead should
+ *  not be invoked until other core work is done and other application callbacks
+ *  have completed. To accomplish this, any application callback should be
+ *  enqueued using grpc_core::ApplicationCallbackExecCtx::Enqueue .
+ *
+ *  CONVENTIONS:
+ *  - Instances of this must ALWAYS be constructed on the stack, never
+ *    heap allocated.
+ *  - Instances of this are generally constructed before ExecCtx when needed.
+ *    The only exception is for ExecCtx's that are explicitly flushed and
+ *    that survive beyond the scope of the function that can cause application
+ *    callbacks to be invoked (e.g., in the timer thread).
+ *
+ *  Generally, core entry points that may trigger application-level callbacks
+ *  will have the following declarations:
+ *
+ *  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+ *  grpc_core::ExecCtx exec_ctx;
+ *
+ *  This ordering is important to make sure that the ApplicationCallbackExecCtx
+ *  is destroyed after the ExecCtx (to prevent the re-entry problem described
+ *  above, as well as making sure that ExecCtx core callbacks are invoked first)
+ *
+ */
+
+class ApplicationCallbackExecCtx {
+ public:
+  /** Default Constructor */
+  ApplicationCallbackExecCtx() { Set(this, flags_); }
+
+  /** Parameterised Constructor */
+  ApplicationCallbackExecCtx(uintptr_t fl) : flags_(fl) { Set(this, flags_); }
+
+  ~ApplicationCallbackExecCtx() {
+    if (reinterpret_cast<ApplicationCallbackExecCtx*>(
+            gpr_tls_get(&callback_exec_ctx_)) == this) {
+      while (head_ != nullptr) {
+        auto* f = head_;
+        head_ = f->internal_next;
+        if (f->internal_next == nullptr) {
+          tail_ = nullptr;
+        }
+        (*f->functor_run)(f, f->internal_success);
+      }
+      gpr_tls_set(&callback_exec_ctx_, reinterpret_cast<intptr_t>(nullptr));
+      if (!(GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags_)) {
+        grpc_core::Fork::DecExecCtxCount();
+      }
+    } else {
+      GPR_DEBUG_ASSERT(head_ == nullptr);
+      GPR_DEBUG_ASSERT(tail_ == nullptr);
+    }
+  }
+
+  static void Set(ApplicationCallbackExecCtx* exec_ctx, uintptr_t flags) {
+    if (reinterpret_cast<ApplicationCallbackExecCtx*>(
+            gpr_tls_get(&callback_exec_ctx_)) == nullptr) {
+      if (!(GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD & flags)) {
+        grpc_core::Fork::IncExecCtxCount();
+      }
+      gpr_tls_set(&callback_exec_ctx_, reinterpret_cast<intptr_t>(exec_ctx));
+    }
+  }
+
+  static void Enqueue(grpc_experimental_completion_queue_functor* functor,
+                      int is_success) {
+    functor->internal_success = is_success;
+    functor->internal_next = nullptr;
+
+    auto* ctx = reinterpret_cast<ApplicationCallbackExecCtx*>(
+        gpr_tls_get(&callback_exec_ctx_));
+
+    if (ctx->head_ == nullptr) {
+      ctx->head_ = functor;
+    }
+    if (ctx->tail_ != nullptr) {
+      ctx->tail_->internal_next = functor;
+    }
+    ctx->tail_ = functor;
+  }
+
+  /** Global initialization for ApplicationCallbackExecCtx. Called by init. */
+  static void GlobalInit(void) { gpr_tls_init(&callback_exec_ctx_); }
+
+  /** Global shutdown for ApplicationCallbackExecCtx. Called by init. */
+  static void GlobalShutdown(void) { gpr_tls_destroy(&callback_exec_ctx_); }
+
+ private:
+  uintptr_t flags_{0u};
+  grpc_experimental_completion_queue_functor* head_{nullptr};
+  grpc_experimental_completion_queue_functor* tail_{nullptr};
+  GPR_TLS_CLASS_DECL(callback_exec_ctx_);
+};
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXEC_CTX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.cc
new file mode 100644
index 0000000..9f92c9f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.cc	
@@ -0,0 +1,469 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/executor.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
+
+#define MAX_DEPTH 2
+
+#define EXECUTOR_TRACE(format, ...)                       \
+  do {                                                    \
+    if (GRPC_TRACE_FLAG_ENABLED(executor_trace)) {        \
+      gpr_log(GPR_INFO, "EXECUTOR " format, __VA_ARGS__); \
+    }                                                     \
+  } while (0)
+
+#define EXECUTOR_TRACE0(str)                       \
+  do {                                             \
+    if (GRPC_TRACE_FLAG_ENABLED(executor_trace)) { \
+      gpr_log(GPR_INFO, "EXECUTOR " str);          \
+    }                                              \
+  } while (0)
+
+namespace grpc_core {
+namespace {
+
+GPR_TLS_DECL(g_this_thread_state);
+
+Executor* executors[static_cast<size_t>(ExecutorType::NUM_EXECUTORS)];
+
+void default_enqueue_short(grpc_closure* closure, grpc_error* error) {
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)]->Enqueue(
+      closure, error, true /* is_short */);
+}
+
+void default_enqueue_long(grpc_closure* closure, grpc_error* error) {
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)]->Enqueue(
+      closure, error, false /* is_short */);
+}
+
+void resolver_enqueue_short(grpc_closure* closure, grpc_error* error) {
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)]->Enqueue(
+      closure, error, true /* is_short */);
+}
+
+void resolver_enqueue_long(grpc_closure* closure, grpc_error* error) {
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)]->Enqueue(
+      closure, error, false /* is_short */);
+}
+
+using EnqueueFunc = void (*)(grpc_closure* closure, grpc_error* error);
+
+const EnqueueFunc
+    executor_enqueue_fns_[static_cast<size_t>(ExecutorType::NUM_EXECUTORS)]
+                         [static_cast<size_t>(ExecutorJobType::NUM_JOB_TYPES)] =
+                             {{default_enqueue_short, default_enqueue_long},
+                              {resolver_enqueue_short, resolver_enqueue_long}};
+
+}  // namespace
+
+TraceFlag executor_trace(false, "executor");
+
+Executor::Executor(const char* name) : name_(name) {
+  adding_thread_lock_ = GPR_SPINLOCK_STATIC_INITIALIZER;
+  gpr_atm_rel_store(&num_threads_, 0);
+  max_threads_ = GPR_MAX(1, 2 * gpr_cpu_num_cores());
+}
+
+void Executor::Init() { SetThreading(true); }
+
+size_t Executor::RunClosures(const char* executor_name,
+                             grpc_closure_list list) {
+  size_t n = 0;
+
+  // In the executor, the ExecCtx for the thread is declared in the executor
+  // thread itself, but this is the point where we could start seeing
+  // application-level callbacks. No need to create a new ExecCtx, though,
+  // since there already is one and it is flushed (but not destructed) in this
+  // function itself. The ApplicationCallbackExecCtx will have its callbacks
+  // invoked on its destruction, which will be after completing any closures in
+  // the executor's closure list (which were explicitly scheduled onto the
+  // executor).
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx(
+      GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD);
+
+  grpc_closure* c = list.head;
+  while (c != nullptr) {
+    grpc_closure* next = c->next_data.next;
+    grpc_error* error = c->error_data.error;
+#ifndef NDEBUG
+    EXECUTOR_TRACE("(%s) run %p [created by %s:%d]", executor_name, c,
+                   c->file_created, c->line_created);
+    c->scheduled = false;
+#else
+    EXECUTOR_TRACE("(%s) run %p", executor_name, c);
+#endif
+    c->cb(c->cb_arg, error);
+    GRPC_ERROR_UNREF(error);
+    c = next;
+    n++;
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+
+  return n;
+}
+
+bool Executor::IsThreaded() const {
+  return gpr_atm_acq_load(&num_threads_) > 0;
+}
+
+void Executor::SetThreading(bool threading) {
+  gpr_atm curr_num_threads = gpr_atm_acq_load(&num_threads_);
+  EXECUTOR_TRACE("(%s) SetThreading(%d) begin", name_, threading);
+
+  if (threading) {
+    if (curr_num_threads > 0) {
+      EXECUTOR_TRACE("(%s) SetThreading(true). curr_num_threads > 0", name_);
+      return;
+    }
+
+    GPR_ASSERT(num_threads_ == 0);
+    gpr_atm_rel_store(&num_threads_, 1);
+    thd_state_ = static_cast<ThreadState*>(
+        gpr_zalloc(sizeof(ThreadState) * max_threads_));
+
+    for (size_t i = 0; i < max_threads_; i++) {
+      gpr_mu_init(&thd_state_[i].mu);
+      gpr_cv_init(&thd_state_[i].cv);
+      thd_state_[i].id = i;
+      thd_state_[i].name = name_;
+      thd_state_[i].thd = grpc_core::Thread();
+      thd_state_[i].elems = GRPC_CLOSURE_LIST_INIT;
+    }
+
+    thd_state_[0].thd =
+        grpc_core::Thread(name_, &Executor::ThreadMain, &thd_state_[0]);
+    thd_state_[0].thd.Start();
+  } else {  // !threading
+    if (curr_num_threads == 0) {
+      EXECUTOR_TRACE("(%s) SetThreading(false). curr_num_threads == 0", name_);
+      return;
+    }
+
+    for (size_t i = 0; i < max_threads_; i++) {
+      gpr_mu_lock(&thd_state_[i].mu);
+      thd_state_[i].shutdown = true;
+      gpr_cv_signal(&thd_state_[i].cv);
+      gpr_mu_unlock(&thd_state_[i].mu);
+    }
+
+    /* Ensure no thread is adding a new thread. Once this is past, then no
+     * thread will try to add a new one either (since shutdown is true) */
+    gpr_spinlock_lock(&adding_thread_lock_);
+    gpr_spinlock_unlock(&adding_thread_lock_);
+
+    curr_num_threads = gpr_atm_no_barrier_load(&num_threads_);
+    for (gpr_atm i = 0; i < curr_num_threads; i++) {
+      thd_state_[i].thd.Join();
+      EXECUTOR_TRACE("(%s) Thread %" PRIdPTR " of %" PRIdPTR " joined", name_,
+                     i + 1, curr_num_threads);
+    }
+
+    gpr_atm_rel_store(&num_threads_, 0);
+    for (size_t i = 0; i < max_threads_; i++) {
+      gpr_mu_destroy(&thd_state_[i].mu);
+      gpr_cv_destroy(&thd_state_[i].cv);
+      RunClosures(thd_state_[i].name, thd_state_[i].elems);
+    }
+
+    gpr_free(thd_state_);
+
+    // grpc_iomgr_shutdown_background_closure() will close all the registered
+    // fds in the background poller, and wait for all pending closures to
+    // finish. Thus, never call Executor::SetThreading(false) in the middle of
+    // an application.
+    // TODO(guantaol): create another method to finish all the pending closures
+    // registered in the background poller by grpc_core::Executor.
+    grpc_iomgr_shutdown_background_closure();
+  }
+
+  EXECUTOR_TRACE("(%s) SetThreading(%d) done", name_, threading);
+}
+
+void Executor::Shutdown() { SetThreading(false); }
+
+void Executor::ThreadMain(void* arg) {
+  ThreadState* ts = static_cast<ThreadState*>(arg);
+  gpr_tls_set(&g_this_thread_state, reinterpret_cast<intptr_t>(ts));
+
+  grpc_core::ExecCtx exec_ctx(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD);
+
+  size_t subtract_depth = 0;
+  for (;;) {
+    EXECUTOR_TRACE("(%s) [%" PRIdPTR "]: step (sub_depth=%" PRIdPTR ")",
+                   ts->name, ts->id, subtract_depth);
+
+    gpr_mu_lock(&ts->mu);
+    ts->depth -= subtract_depth;
+    // Wait for closures to be enqueued or for the executor to be shutdown
+    while (grpc_closure_list_empty(ts->elems) && !ts->shutdown) {
+      ts->queued_long_job = false;
+      gpr_cv_wait(&ts->cv, &ts->mu, gpr_inf_future(GPR_CLOCK_MONOTONIC));
+    }
+
+    if (ts->shutdown) {
+      EXECUTOR_TRACE("(%s) [%" PRIdPTR "]: shutdown", ts->name, ts->id);
+      gpr_mu_unlock(&ts->mu);
+      break;
+    }
+
+    GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED();
+    grpc_closure_list closures = ts->elems;
+    ts->elems = GRPC_CLOSURE_LIST_INIT;
+    gpr_mu_unlock(&ts->mu);
+
+    EXECUTOR_TRACE("(%s) [%" PRIdPTR "]: execute", ts->name, ts->id);
+
+    grpc_core::ExecCtx::Get()->InvalidateNow();
+    subtract_depth = RunClosures(ts->name, closures);
+  }
+
+  gpr_tls_set(&g_this_thread_state, reinterpret_cast<intptr_t>(nullptr));
+}
+
+void Executor::Enqueue(grpc_closure* closure, grpc_error* error,
+                       bool is_short) {
+  bool retry_push;
+  if (is_short) {
+    GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS();
+  } else {
+    GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS();
+  }
+
+  do {
+    retry_push = false;
+    size_t cur_thread_count =
+        static_cast<size_t>(gpr_atm_acq_load(&num_threads_));
+
+    // If the number of threads is zero(i.e either the executor is not threaded
+    // or already shutdown), then queue the closure on the exec context itself
+    if (cur_thread_count == 0) {
+#ifndef NDEBUG
+      EXECUTOR_TRACE("(%s) schedule %p (created %s:%d) inline", name_, closure,
+                     closure->file_created, closure->line_created);
+#else
+      EXECUTOR_TRACE("(%s) schedule %p inline", name_, closure);
+#endif
+      grpc_closure_list_append(grpc_core::ExecCtx::Get()->closure_list(),
+                               closure, error);
+      return;
+    }
+
+    if (grpc_iomgr_add_closure_to_background_poller(closure, error)) {
+      return;
+    }
+
+    ThreadState* ts = (ThreadState*)gpr_tls_get(&g_this_thread_state);
+    if (ts == nullptr) {
+      ts = &thd_state_[GPR_HASH_POINTER(grpc_core::ExecCtx::Get(),
+                                        cur_thread_count)];
+    } else {
+      GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF();
+    }
+
+    ThreadState* orig_ts = ts;
+    bool try_new_thread = false;
+
+    for (;;) {
+#ifndef NDEBUG
+      EXECUTOR_TRACE(
+          "(%s) try to schedule %p (%s) (created %s:%d) to thread "
+          "%" PRIdPTR,
+          name_, closure, is_short ? "short" : "long", closure->file_created,
+          closure->line_created, ts->id);
+#else
+      EXECUTOR_TRACE("(%s) try to schedule %p (%s) to thread %" PRIdPTR, name_,
+                     closure, is_short ? "short" : "long", ts->id);
+#endif
+
+      gpr_mu_lock(&ts->mu);
+      if (ts->queued_long_job) {
+        // if there's a long job queued, we never queue anything else to this
+        // queue (since long jobs can take 'infinite' time and we need to
+        // guarantee no starvation). Spin through queues and try again
+        gpr_mu_unlock(&ts->mu);
+        size_t idx = ts->id;
+        ts = &thd_state_[(idx + 1) % cur_thread_count];
+        if (ts == orig_ts) {
+          // We cycled through all the threads. Retry enqueue again by creating
+          // a new thread
+          //
+          // TODO (sreek): There is a potential issue here. We are
+          // unconditionally setting try_new_thread to true here. What if the
+          // executor is shutdown OR if cur_thread_count is already equal to
+          // max_threads ?
+          // (Fortunately, this is not an issue yet (as of july 2018) because
+          // there is only one instance of long job in gRPC and hence we will
+          // not hit this code path)
+          retry_push = true;
+          try_new_thread = true;
+          break;
+        }
+
+        continue;  // Try the next thread-state
+      }
+
+      // == Found the thread state (i.e thread) to enqueue this closure! ==
+
+      // Also, if this thread has been waiting for closures, wake it up.
+      // - If grpc_closure_list_empty() is true and the Executor is not
+      //   shutdown, it means that the thread must be waiting in ThreadMain()
+      // - Note that gpr_cv_signal() won't immediately wakeup the thread. That
+      //   happens after we release the mutex &ts->mu a few lines below
+      if (grpc_closure_list_empty(ts->elems) && !ts->shutdown) {
+        GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED();
+        gpr_cv_signal(&ts->cv);
+      }
+
+      grpc_closure_list_append(&ts->elems, closure, error);
+
+      // If we already queued more than MAX_DEPTH number of closures on this
+      // thread, use this as a hint to create more threads
+      ts->depth++;
+      try_new_thread = ts->depth > MAX_DEPTH &&
+                       cur_thread_count < max_threads_ && !ts->shutdown;
+
+      ts->queued_long_job = !is_short;
+
+      gpr_mu_unlock(&ts->mu);
+      break;
+    }
+
+    if (try_new_thread && gpr_spinlock_trylock(&adding_thread_lock_)) {
+      cur_thread_count = static_cast<size_t>(gpr_atm_acq_load(&num_threads_));
+      if (cur_thread_count < max_threads_) {
+        // Increment num_threads (safe to do a store instead of a cas because we
+        // always increment num_threads under the 'adding_thread_lock')
+        gpr_atm_rel_store(&num_threads_, cur_thread_count + 1);
+
+        thd_state_[cur_thread_count].thd = grpc_core::Thread(
+            name_, &Executor::ThreadMain, &thd_state_[cur_thread_count]);
+        thd_state_[cur_thread_count].thd.Start();
+      }
+      gpr_spinlock_unlock(&adding_thread_lock_);
+    }
+
+    if (retry_push) {
+      GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES();
+    }
+  } while (retry_push);
+}
+
+// Executor::InitAll() and Executor::ShutdownAll() functions are called in the
+// the grpc_init() and grpc_shutdown() code paths which are protected by a
+// global mutex. So it is okay to assume that these functions are thread-safe
+void Executor::InitAll() {
+  EXECUTOR_TRACE0("Executor::InitAll() enter");
+
+  // Return if Executor::InitAll() is already called earlier
+  if (executors[static_cast<size_t>(ExecutorType::DEFAULT)] != nullptr) {
+    GPR_ASSERT(executors[static_cast<size_t>(ExecutorType::RESOLVER)] !=
+               nullptr);
+    return;
+  }
+
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)] =
+      new Executor("default-executor");
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)] =
+      new Executor("resolver-executor");
+
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)]->Init();
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)]->Init();
+
+  EXECUTOR_TRACE0("Executor::InitAll() done");
+}
+
+void Executor::Run(grpc_closure* closure, grpc_error* error,
+                   ExecutorType executor_type, ExecutorJobType job_type) {
+  executor_enqueue_fns_[static_cast<size_t>(executor_type)]
+                       [static_cast<size_t>(job_type)](closure, error);
+}
+
+void Executor::ShutdownAll() {
+  EXECUTOR_TRACE0("Executor::ShutdownAll() enter");
+
+  // Return if Executor:SshutdownAll() is already called earlier
+  if (executors[static_cast<size_t>(ExecutorType::DEFAULT)] == nullptr) {
+    GPR_ASSERT(executors[static_cast<size_t>(ExecutorType::RESOLVER)] ==
+               nullptr);
+    return;
+  }
+
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)]->Shutdown();
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)]->Shutdown();
+
+  // Delete the executor objects.
+  //
+  // NOTE: It is important to call Shutdown() on all executors first before
+  // calling delete  because it is possible for one executor (that is not
+  // shutdown yet) to call Enqueue() on a different executor which is already
+  // shutdown. This is legal and in such cases, the Enqueue() operation
+  // effectively "fails" and enqueues that closure on the calling thread's
+  // exec_ctx.
+  //
+  // By ensuring that all executors are shutdown first, we are also ensuring
+  // that no thread is active across all executors.
+
+  delete executors[static_cast<size_t>(ExecutorType::DEFAULT)];
+  delete executors[static_cast<size_t>(ExecutorType::RESOLVER)];
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)] = nullptr;
+  executors[static_cast<size_t>(ExecutorType::RESOLVER)] = nullptr;
+
+  EXECUTOR_TRACE0("Executor::ShutdownAll() done");
+}
+
+bool Executor::IsThreaded(ExecutorType executor_type) {
+  GPR_ASSERT(executor_type < ExecutorType::NUM_EXECUTORS);
+  return executors[static_cast<size_t>(executor_type)]->IsThreaded();
+}
+
+bool Executor::IsThreadedDefault() {
+  return Executor::IsThreaded(ExecutorType::DEFAULT);
+}
+
+void Executor::SetThreadingAll(bool enable) {
+  EXECUTOR_TRACE("Executor::SetThreadingAll(%d) called", enable);
+  for (size_t i = 0; i < static_cast<size_t>(ExecutorType::NUM_EXECUTORS);
+       i++) {
+    executors[i]->SetThreading(enable);
+  }
+}
+
+void Executor::SetThreadingDefault(bool enable) {
+  EXECUTOR_TRACE("Executor::SetThreadingDefault(%d) called", enable);
+  executors[static_cast<size_t>(ExecutorType::DEFAULT)]->SetThreading(enable);
+}
+
+void grpc_executor_global_init() { gpr_tls_init(&g_this_thread_state); }
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.h
new file mode 100644
index 0000000..7133700
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor.h	
@@ -0,0 +1,122 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/closure.h"
+
+namespace grpc_core {
+
+struct ThreadState {
+  gpr_mu mu;
+  size_t id;         // For debugging purposes
+  const char* name;  // Thread state name
+  gpr_cv cv;
+  grpc_closure_list elems;
+  size_t depth;  // Number of closures in the closure list
+  bool shutdown;
+  bool queued_long_job;
+  grpc_core::Thread thd;
+};
+
+enum class ExecutorType {
+  DEFAULT = 0,
+  RESOLVER,
+
+  NUM_EXECUTORS  // Add new values above this
+};
+
+enum class ExecutorJobType {
+  SHORT = 0,
+  LONG,
+  NUM_JOB_TYPES  // Add new values above this
+};
+
+class Executor {
+ public:
+  Executor(const char* executor_name);
+
+  void Init();
+
+  /** Is the executor multi-threaded? */
+  bool IsThreaded() const;
+
+  /* Enable/disable threading - must be called after Init and Shutdown(). Never
+   * call SetThreading(false) in the middle of an application */
+  void SetThreading(bool threading);
+
+  /** Shutdown the executor, running all pending work as part of the call */
+  void Shutdown();
+
+  /** Enqueue the closure onto the executor. is_short is true if the closure is
+   * a short job (i.e expected to not block and complete quickly) */
+  void Enqueue(grpc_closure* closure, grpc_error* error, bool is_short);
+
+  // TODO(sreek): Currently we have two executors (available globally): The
+  // default executor and the resolver executor.
+  //
+  // Some of the functions below operate on the DEFAULT executor only while some
+  // operate of ALL the executors. This is a bit confusing and should be cleaned
+  // up in future (where we make all the following functions take ExecutorType
+  // and/or JobType)
+
+  // Initialize ALL the executors
+  static void InitAll();
+
+  static void Run(grpc_closure* closure, grpc_error* error,
+                  ExecutorType executor_type = ExecutorType::DEFAULT,
+                  ExecutorJobType job_type = ExecutorJobType::SHORT);
+
+  // Shutdown ALL the executors
+  static void ShutdownAll();
+
+  // Set the threading mode for ALL the executors
+  static void SetThreadingAll(bool enable);
+
+  // Set the threading mode for ALL the executors
+  static void SetThreadingDefault(bool enable);
+
+  // Return if a given executor is running in threaded mode (i.e if
+  // SetThreading(true) was called previously on that executor)
+  static bool IsThreaded(ExecutorType executor_type);
+
+  // Return if the DEFAULT executor is threaded
+  static bool IsThreadedDefault();
+
+ private:
+  static size_t RunClosures(const char* executor_name, grpc_closure_list list);
+  static void ThreadMain(void* arg);
+
+  const char* name_;
+  ThreadState* thd_state_;
+  size_t max_threads_;
+  gpr_atm num_threads_;
+  gpr_spinlock adding_thread_lock_;
+};
+
+// Global initializer for executor
+void grpc_executor_global_init();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.cc
new file mode 100644
index 0000000..74096a4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.cc	
@@ -0,0 +1,183 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/executor/mpmcqueue.h"
+
+namespace grpc_core {
+
+DebugOnlyTraceFlag grpc_thread_pool_trace(false, "thread_pool");
+
+inline void* InfLenFIFOQueue::PopFront() {
+  // Caller should already check queue is not empty and has already held the
+  // mutex. This function will assume that there is at least one element in the
+  // queue (i.e. queue_head_->content is valid).
+  void* result = queue_head_->content;
+  count_.Store(count_.Load(MemoryOrder::RELAXED) - 1, MemoryOrder::RELAXED);
+
+  // Updates Stats when trace flag turned on.
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_thread_pool_trace)) {
+    gpr_timespec wait_time =
+        gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), queue_head_->insert_time);
+    stats_.num_completed++;
+    stats_.total_queue_time = gpr_time_add(stats_.total_queue_time, wait_time);
+    stats_.max_queue_time = gpr_time_max(
+        gpr_convert_clock_type(stats_.max_queue_time, GPR_TIMESPAN), wait_time);
+
+    if (count_.Load(MemoryOrder::RELAXED) == 0) {
+      stats_.busy_queue_time =
+          gpr_time_add(stats_.busy_queue_time,
+                       gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), busy_time));
+    }
+
+    gpr_log(GPR_INFO,
+            "[InfLenFIFOQueue PopFront] num_completed:        %" PRIu64
+            " total_queue_time: %f max_queue_time:   %f busy_queue_time:   %f",
+            stats_.num_completed,
+            gpr_timespec_to_micros(stats_.total_queue_time),
+            gpr_timespec_to_micros(stats_.max_queue_time),
+            gpr_timespec_to_micros(stats_.busy_queue_time));
+  }
+
+  queue_head_ = queue_head_->next;
+  // Signal waiting thread
+  if (count_.Load(MemoryOrder::RELAXED) > 0) {
+    TopWaiter()->cv.Signal();
+  }
+
+  return result;
+}
+
+InfLenFIFOQueue::Node* InfLenFIFOQueue::AllocateNodes(int num) {
+  num_nodes_ = num_nodes_ + num;
+  Node* new_chunk = static_cast<Node*>(gpr_zalloc(sizeof(Node) * num));
+  new_chunk[0].next = &new_chunk[1];
+  new_chunk[num - 1].prev = &new_chunk[num - 2];
+  for (int i = 1; i < num - 1; ++i) {
+    new_chunk[i].prev = &new_chunk[i - 1];
+    new_chunk[i].next = &new_chunk[i + 1];
+  }
+  return new_chunk;
+}
+
+InfLenFIFOQueue::InfLenFIFOQueue() {
+  delete_list_size_ = kDeleteListInitSize;
+  delete_list_ =
+      static_cast<Node**>(gpr_zalloc(sizeof(Node*) * delete_list_size_));
+
+  Node* new_chunk = AllocateNodes(kQueueInitNumNodes);
+  delete_list_[delete_list_count_++] = new_chunk;
+  queue_head_ = queue_tail_ = new_chunk;
+  new_chunk[0].prev = &new_chunk[kQueueInitNumNodes - 1];
+  new_chunk[kQueueInitNumNodes - 1].next = &new_chunk[0];
+
+  waiters_.next = &waiters_;
+  waiters_.prev = &waiters_;
+}
+
+InfLenFIFOQueue::~InfLenFIFOQueue() {
+  GPR_ASSERT(count_.Load(MemoryOrder::RELAXED) == 0);
+  for (size_t i = 0; i < delete_list_count_; ++i) {
+    gpr_free(delete_list_[i]);
+  }
+  gpr_free(delete_list_);
+}
+
+void InfLenFIFOQueue::Put(void* elem) {
+  MutexLock l(&mu_);
+
+  int curr_count = count_.Load(MemoryOrder::RELAXED);
+
+  if (queue_tail_ == queue_head_ && curr_count != 0) {
+    // List is full. Expands list to double size by inserting new chunk of nodes
+    Node* new_chunk = AllocateNodes(curr_count);
+    delete_list_[delete_list_count_++] = new_chunk;
+    // Expands delete list on full.
+    if (delete_list_count_ == delete_list_size_) {
+      delete_list_size_ = delete_list_size_ * 2;
+      delete_list_ = static_cast<Node**>(
+          gpr_realloc(delete_list_, sizeof(Node*) * delete_list_size_));
+    }
+    new_chunk[0].prev = queue_tail_->prev;
+    new_chunk[curr_count - 1].next = queue_head_;
+    queue_tail_->prev->next = new_chunk;
+    queue_head_->prev = &new_chunk[curr_count - 1];
+    queue_tail_ = new_chunk;
+  }
+  queue_tail_->content = static_cast<void*>(elem);
+
+  // Updates Stats info
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_thread_pool_trace)) {
+    stats_.num_started++;
+    gpr_log(GPR_INFO, "[InfLenFIFOQueue Put] num_started:        %" PRIu64,
+            stats_.num_started);
+    auto current_time = gpr_now(GPR_CLOCK_MONOTONIC);
+    if (curr_count == 0) {
+      busy_time = current_time;
+    }
+    queue_tail_->insert_time = current_time;
+  }
+
+  count_.Store(curr_count + 1, MemoryOrder::RELAXED);
+  queue_tail_ = queue_tail_->next;
+
+  TopWaiter()->cv.Signal();
+}
+
+void* InfLenFIFOQueue::Get(gpr_timespec* wait_time) {
+  MutexLock l(&mu_);
+
+  if (count_.Load(MemoryOrder::RELAXED) == 0) {
+    gpr_timespec start_time;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_thread_pool_trace) &&
+        wait_time != nullptr) {
+      start_time = gpr_now(GPR_CLOCK_MONOTONIC);
+    }
+
+    Waiter self;
+    PushWaiter(&self);
+    do {
+      self.cv.Wait(&mu_);
+    } while (count_.Load(MemoryOrder::RELAXED) == 0);
+    RemoveWaiter(&self);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_thread_pool_trace) &&
+        wait_time != nullptr) {
+      *wait_time = gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), start_time);
+    }
+  }
+  GPR_DEBUG_ASSERT(count_.Load(MemoryOrder::RELAXED) > 0);
+  return PopFront();
+}
+
+void InfLenFIFOQueue::PushWaiter(Waiter* waiter) {
+  waiter->next = waiters_.next;
+  waiter->prev = &waiters_;
+  waiter->next->prev = waiter;
+  waiter->prev->next = waiter;
+}
+
+void InfLenFIFOQueue::RemoveWaiter(Waiter* waiter) {
+  GPR_DEBUG_ASSERT(waiter != &waiters_);
+  waiter->next->prev = waiter->prev;
+  waiter->prev->next = waiter->next;
+}
+
+InfLenFIFOQueue::Waiter* InfLenFIFOQueue::TopWaiter() { return waiters_.next; }
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.h
new file mode 100644
index 0000000..474f40b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/mpmcqueue.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+
+extern DebugOnlyTraceFlag grpc_thread_pool_trace;
+
+// Abstract base class of a Multiple-Producer-Multiple-Consumer(MPMC) queue
+// interface
+class MPMCQueueInterface {
+ public:
+  virtual ~MPMCQueueInterface() {}
+
+  // Puts elem into queue immediately at the end of queue.
+  // This might cause to block on full queue depending on implementation.
+  virtual void Put(void* elem) = 0;
+
+  // Removes the oldest element from the queue and return it.
+  // This might cause to block on empty queue depending on implementation.
+  // Optional argument for collecting stats purpose.
+  virtual void* Get(gpr_timespec* wait_time = nullptr) = 0;
+
+  // Returns number of elements in the queue currently
+  virtual int count() const = 0;
+};
+
+class InfLenFIFOQueue : public MPMCQueueInterface {
+ public:
+  // Creates a new MPMC Queue. The queue created will have infinite length.
+  InfLenFIFOQueue();
+
+  // Releases all resources held by the queue. The queue must be empty, and no
+  // one waits on conditional variables.
+  ~InfLenFIFOQueue();
+
+  // Puts elem into queue immediately at the end of queue. Since the queue has
+  // infinite length, this routine will never block and should never fail.
+  void Put(void* elem);
+
+  // Removes the oldest element from the queue and returns it.
+  // This routine will cause the thread to block if queue is currently empty.
+  // Argument wait_time should be passed in when trace flag turning on (for
+  // collecting stats info purpose.)
+  void* Get(gpr_timespec* wait_time = nullptr);
+
+  // Returns number of elements in queue currently.
+  // There might be concurrently add/remove on queue, so count might change
+  // quickly.
+  int count() const { return count_.Load(MemoryOrder::RELAXED); }
+
+  struct Node {
+    Node* next;  // Linking
+    Node* prev;
+    void* content;             // Points to actual element
+    gpr_timespec insert_time;  // Time for stats
+
+    Node() {
+      next = prev = nullptr;
+      content = nullptr;
+    }
+  };
+
+  // For test purpose only. Returns number of nodes allocated in queue.
+  // Any allocated node will be alive until the destruction of the queue.
+  int num_nodes() const { return num_nodes_; }
+
+  // For test purpose only. Returns the initial number of nodes in queue.
+  int init_num_nodes() const { return kQueueInitNumNodes; }
+
+ private:
+  // For Internal Use Only.
+  // Removes the oldest element from the queue and returns it. This routine
+  // will NOT check whether queue is empty, and it will NOT acquire mutex.
+  // Caller MUST check that queue is not empty and must acquire mutex before
+  // callling.
+  void* PopFront();
+
+  // Stats of queue. This will only be collect when debug trace mode is on.
+  // All printed stats info will have time measurement in microsecond.
+  struct Stats {
+    uint64_t num_started;    // Number of elements have been added to queue
+    uint64_t num_completed;  // Number of elements have been removed from
+                             // the queue
+    gpr_timespec total_queue_time;  // Total waiting time that all the
+                                    // removed elements have spent in queue
+    gpr_timespec max_queue_time;    // Max waiting time among all removed
+                                    // elements
+    gpr_timespec busy_queue_time;   // Accumulated amount of time that queue
+                                    // was not empty
+
+    Stats() {
+      num_started = 0;
+      num_completed = 0;
+      total_queue_time = gpr_time_0(GPR_TIMESPAN);
+      max_queue_time = gpr_time_0(GPR_TIMESPAN);
+      busy_queue_time = gpr_time_0(GPR_TIMESPAN);
+    }
+  };
+
+  // Node for waiting thread queue. Stands for one waiting thread, should have
+  // exact one thread waiting on its CondVar.
+  // Using a doubly linked list for waiting thread queue to wake up waiting
+  // threads in LIFO order to reduce cache misses.
+  struct Waiter {
+    CondVar cv;
+    Waiter* next;
+    Waiter* prev;
+  };
+
+  // Pushs waiter to the front of queue, require caller held mutex
+  void PushWaiter(Waiter* waiter);
+
+  // Removes waiter from queue, require caller held mutex
+  void RemoveWaiter(Waiter* waiter);
+
+  // Returns pointer to the waiter that should be waken up next, should be the
+  // last added waiter.
+  Waiter* TopWaiter();
+
+  Mutex mu_;        // Protecting lock
+  Waiter waiters_;  // Head of waiting thread queue
+
+  // Initial size for delete list
+  static const int kDeleteListInitSize = 1024;
+  // Initial number of nodes allocated
+  static const int kQueueInitNumNodes = 1024;
+
+  Node** delete_list_ = nullptr;  // Keeps track of all allocated array entries
+                                  // for deleting on destruction
+  size_t delete_list_count_ = 0;  // Number of entries in list
+  size_t delete_list_size_ = 0;   // Size of the list. List will be expanded to
+                                  // double size on full
+
+  Node* queue_head_ = nullptr;  // Head of the queue, remove position
+  Node* queue_tail_ = nullptr;  // End of queue, insert position
+  Atomic<int> count_{0};        // Number of elements in queue
+  int num_nodes_ = 0;           // Number of nodes allocated
+
+  Stats stats_;            // Stats info
+  gpr_timespec busy_time;  // Start time of busy queue
+
+  // Internal Helper.
+  // Allocates an array of nodes of size "num", links all nodes together except
+  // the first node's prev and last node's next. They should be set by caller
+  // manually afterward.
+  Node* AllocateNodes(int num);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_MPMCQUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.cc
new file mode 100644
index 0000000..859c49a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.cc	
@@ -0,0 +1,137 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/executor/threadpool.h"
+
+namespace grpc_core {
+
+void ThreadPoolWorker::Run() {
+  while (true) {
+    void* elem;
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_thread_pool_trace)) {
+      // Updates stats and print
+      gpr_timespec wait_time = gpr_time_0(GPR_TIMESPAN);
+      elem = queue_->Get(&wait_time);
+      stats_.sleep_time = gpr_time_add(stats_.sleep_time, wait_time);
+      gpr_log(GPR_INFO,
+              "ThreadPool Worker [%s %d] Stats:  sleep_time          %f",
+              thd_name_, index_, gpr_timespec_to_micros(stats_.sleep_time));
+    } else {
+      elem = queue_->Get(nullptr);
+    }
+    if (elem == nullptr) {
+      break;
+    }
+    // Runs closure
+    auto* closure =
+        static_cast<grpc_experimental_completion_queue_functor*>(elem);
+    closure->functor_run(closure, closure->internal_success);
+  }
+}
+
+void ThreadPool::SharedThreadPoolConstructor() {
+  // All worker threads in thread pool must be joinable.
+  thread_options_.set_joinable(true);
+
+  // Create at least 1 worker thread.
+  if (num_threads_ <= 0) num_threads_ = 1;
+
+  queue_ = new InfLenFIFOQueue();
+  threads_ = static_cast<ThreadPoolWorker**>(
+      gpr_zalloc(num_threads_ * sizeof(ThreadPoolWorker*)));
+  for (int i = 0; i < num_threads_; ++i) {
+    threads_[i] = new ThreadPoolWorker(thd_name_, queue_, thread_options_, i);
+    threads_[i]->Start();
+  }
+}
+
+size_t ThreadPool::DefaultStackSize() {
+#if defined(__ANDROID__) || defined(__APPLE__)
+  return 1952 * 1024;
+#else
+  return 64 * 1024;
+#endif
+}
+
+void ThreadPool::AssertHasNotBeenShutDown() {
+  // For debug checking purpose, using RELAXED order is sufficient.
+  GPR_DEBUG_ASSERT(!shut_down_.Load(MemoryOrder::RELAXED));
+}
+
+ThreadPool::ThreadPool(int num_threads) : num_threads_(num_threads) {
+  thd_name_ = "ThreadPoolWorker";
+  thread_options_ = Thread::Options();
+  thread_options_.set_stack_size(DefaultStackSize());
+  SharedThreadPoolConstructor();
+}
+
+ThreadPool::ThreadPool(int num_threads, const char* thd_name)
+    : num_threads_(num_threads), thd_name_(thd_name) {
+  thread_options_ = Thread::Options();
+  thread_options_.set_stack_size(DefaultStackSize());
+  SharedThreadPoolConstructor();
+}
+
+ThreadPool::ThreadPool(int num_threads, const char* thd_name,
+                       const Thread::Options& thread_options)
+    : num_threads_(num_threads),
+      thd_name_(thd_name),
+      thread_options_(thread_options) {
+  if (thread_options_.stack_size() == 0) {
+    thread_options_.set_stack_size(DefaultStackSize());
+  }
+  SharedThreadPoolConstructor();
+}
+
+ThreadPool::~ThreadPool() {
+  // For debug checking purpose, using RELAXED order is sufficient.
+  shut_down_.Store(true, MemoryOrder::RELAXED);
+
+  for (int i = 0; i < num_threads_; ++i) {
+    queue_->Put(nullptr);
+  }
+
+  for (int i = 0; i < num_threads_; ++i) {
+    threads_[i]->Join();
+  }
+
+  for (int i = 0; i < num_threads_; ++i) {
+    delete threads_[i];
+  }
+  gpr_free(threads_);
+  delete queue_;
+}
+
+void ThreadPool::Add(grpc_experimental_completion_queue_functor* closure) {
+  AssertHasNotBeenShutDown();
+  queue_->Put(static_cast<void*>(closure));
+}
+
+int ThreadPool::num_pending_closures() const { return queue_->count(); }
+
+int ThreadPool::pool_capacity() const { return num_threads_; }
+
+const Thread::Options& ThreadPool::thread_options() const {
+  return thread_options_;
+}
+
+const char* ThreadPool::thread_name() const { return thd_name_; }
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.h
new file mode 100644
index 0000000..01a00c0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/executor/threadpool.h	
@@ -0,0 +1,149 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/executor/mpmcqueue.h"
+
+namespace grpc_core {
+
+// A base abstract base class for threadpool.
+// Threadpool is an executor that maintains a pool of threads sitting around
+// and waiting for closures. A threadpool also maintains a queue of pending
+// closures, when closures appearing in the queue, the threads in pool will
+// pull them out and execute them.
+class ThreadPoolInterface {
+ public:
+  // Waits for all pending closures to complete, then shuts down thread pool.
+  virtual ~ThreadPoolInterface() {}
+
+  // Schedules a given closure for execution later.
+  // Depending on specific subclass implementation, this routine might cause
+  // current thread to be blocked (in case of unable to schedule).
+  // Closure should contain a function pointer and arguments it will take, more
+  // details for closure struct at /grpc/include/grpc/impl/codegen/grpc_types.h
+  virtual void Add(grpc_experimental_completion_queue_functor* closure) = 0;
+
+  // Returns the current number of pending closures
+  virtual int num_pending_closures() const = 0;
+
+  // Returns the capacity of pool (number of worker threads in pool)
+  virtual int pool_capacity() const = 0;
+
+  // Thread option accessor
+  virtual const Thread::Options& thread_options() const = 0;
+
+  // Returns the thread name for threads in this ThreadPool.
+  virtual const char* thread_name() const = 0;
+};
+
+// Worker thread for threadpool. Executes closures in the queue, until getting a
+// NULL closure.
+class ThreadPoolWorker {
+ public:
+  ThreadPoolWorker(const char* thd_name, MPMCQueueInterface* queue,
+                   Thread::Options& options, int index)
+      : queue_(queue), thd_name_(thd_name), index_(index) {
+    thd_ = Thread(thd_name,
+                  [](void* th) { static_cast<ThreadPoolWorker*>(th)->Run(); },
+                  this, nullptr, options);
+  }
+
+  ~ThreadPoolWorker() {}
+
+  void Start() { thd_.Start(); }
+  void Join() { thd_.Join(); }
+
+ private:
+  // struct for tracking stats of thread
+  struct Stats {
+    gpr_timespec sleep_time;
+    Stats() { sleep_time = gpr_time_0(GPR_TIMESPAN); }
+  };
+
+  void Run();  // Pulls closures from queue and executes them
+
+  MPMCQueueInterface* queue_;  // Queue in thread pool to pull closures from
+  Thread thd_;                 // Thread wrapped in
+  Stats stats_;                // Stats to be collected in run time
+  const char* thd_name_;       // Name of thread
+  int index_;                  // Index in thread pool
+};
+
+// A fixed size thread pool implementation of abstract thread pool interface.
+// In this implementation, the number of threads in pool is fixed, but the
+// capacity of closure queue is unlimited.
+class ThreadPool : public ThreadPoolInterface {
+ public:
+  // Creates a thread pool with size of "num_threads", with default thread name
+  // "ThreadPoolWorker" and all thread options set to default. If the given size
+  // is 0 or less, there will be 1 worker thread created inside pool.
+  ThreadPool(int num_threads);
+
+  // Same as ThreadPool(int num_threads) constructor, except
+  // that it also sets "thd_name" as the name of all threads in the thread pool.
+  ThreadPool(int num_threads, const char* thd_name);
+
+  // Same as ThreadPool(const char *thd_name, int num_threads) constructor,
+  // except that is also set thread_options for threads.
+  // Notes for stack size:
+  // If the stack size field of the passed in Thread::Options is set to default
+  // value 0, default ThreadPool stack size will be used. The current default
+  // stack size of this implementation is 1952K for mobile platform and 64K for
+  // all others.
+  ThreadPool(int num_threads, const char* thd_name,
+             const Thread::Options& thread_options);
+
+  // Waits for all pending closures to complete, then shuts down thread pool.
+  ~ThreadPool() override;
+
+  // Adds given closure into pending queue immediately. Since closure queue has
+  // infinite length, this routine will not block.
+  void Add(grpc_experimental_completion_queue_functor* closure) override;
+
+  int num_pending_closures() const override;
+  int pool_capacity() const override;
+  const Thread::Options& thread_options() const override;
+  const char* thread_name() const override;
+
+ private:
+  int num_threads_ = 0;
+  const char* thd_name_ = nullptr;
+  Thread::Options thread_options_;
+  ThreadPoolWorker** threads_ = nullptr;  // Array of worker threads
+  MPMCQueueInterface* queue_ = nullptr;   // Closure queue
+
+  Atomic<bool> shut_down_{false};  // Destructor has been called if set to true
+
+  void SharedThreadPoolConstructor();
+  // For ThreadPool, default stack size for mobile platform is 1952K. for other
+  // platforms is 64K.
+  size_t DefaultStackSize();
+  // Internal Use Only for debug checking.
+  void AssertHasNotBeenShutDown();
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_THREADPOOL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_posix.cc
new file mode 100644
index 0000000..82654b5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_posix.cc	
@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_FORK
+
+#ifdef GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK
+#include <pthread.h>
+#endif
+
+#include <string.h>
+
+#include <grpc/fork.h>
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/fork.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+namespace {
+bool skipped_handler = true;
+bool registered_handlers = false;
+}  // namespace
+
+void grpc_prefork() {
+  skipped_handler = true;
+  // This  may be called after core shuts down, so verify initialized before
+  // instantiating an ExecCtx.
+  if (!grpc_is_initialized()) {
+    return;
+  }
+  grpc_core::ExecCtx exec_ctx;
+  if (!grpc_core::Fork::Enabled()) {
+    gpr_log(GPR_ERROR,
+            "Fork support not enabled; try running with the "
+            "environment variable GRPC_ENABLE_FORK_SUPPORT=1");
+    return;
+  }
+  const char* poll_strategy_name = grpc_get_poll_strategy_name();
+  if (poll_strategy_name == nullptr ||
+      (strcmp(poll_strategy_name, "epoll1") != 0 &&
+       strcmp(poll_strategy_name, "poll") != 0)) {
+    gpr_log(GPR_INFO,
+            "Fork support is only compatible with the epoll1 and poll polling "
+            "strategies");
+  }
+  if (!grpc_core::Fork::BlockExecCtx()) {
+    gpr_log(GPR_INFO,
+            "Other threads are currently calling into gRPC, skipping fork() "
+            "handlers");
+    return;
+  }
+  grpc_timer_manager_set_threading(false);
+  grpc_core::Executor::SetThreadingAll(false);
+  grpc_core::ExecCtx::Get()->Flush();
+  grpc_core::Fork::AwaitThreads();
+  skipped_handler = false;
+}
+
+void grpc_postfork_parent() {
+  if (!skipped_handler) {
+    grpc_core::Fork::AllowExecCtx();
+    grpc_core::ExecCtx exec_ctx;
+    grpc_timer_manager_set_threading(true);
+    grpc_core::Executor::SetThreadingAll(true);
+  }
+}
+
+void grpc_postfork_child() {
+  if (!skipped_handler) {
+    grpc_core::Fork::AllowExecCtx();
+    grpc_core::ExecCtx exec_ctx;
+    grpc_core::Fork::child_postfork_func reset_polling_engine =
+        grpc_core::Fork::GetResetChildPollingEngineFunc();
+    if (reset_polling_engine != nullptr) {
+      reset_polling_engine();
+    }
+    grpc_timer_manager_set_threading(true);
+    grpc_core::Executor::SetThreadingAll(true);
+  }
+}
+
+void grpc_fork_handlers_auto_register() {
+  if (grpc_core::Fork::Enabled() & !registered_handlers) {
+#ifdef GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK
+    pthread_atfork(grpc_prefork, grpc_postfork_parent, grpc_postfork_child);
+    registered_handlers = true;
+#endif  // GRPC_POSIX_FORK_ALLOW_PTHREAD_ATFORK
+  }
+}
+
+#endif  // GRPC_POSIX_FORK
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_windows.cc
new file mode 100644
index 0000000..798f671
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/fork_windows.cc	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifndef GRPC_POSIX_FORK
+
+#include <grpc/fork.h>
+#include <grpc/support/log.h>
+
+/*
+ * NOTE: FORKING IS NOT GENERALLY SUPPORTED, THIS IS ONLY INTENDED TO WORK
+ *       AROUND VERY SPECIFIC USE CASES.
+ */
+
+void grpc_prefork() { gpr_log(GPR_ERROR, "Forking not supported on Windows"); }
+
+void grpc_postfork_parent() {}
+
+void grpc_postfork_child() {}
+
+void grpc_fork_handlers_auto_register() {}
+
+#endif  // GRPC_POSIX_FORK
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname.h
new file mode 100644
index 0000000..9f10b4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H
+#define GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H
+
+// Returns the hostname of the local machine.
+// Caller takes ownership of result.
+char* grpc_gethostname();
+
+#endif /* GRPC_CORE_LIB_IOMGR_GETHOSTNAME_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_fallback.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_fallback.cc
new file mode 100644
index 0000000..65ae818
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_fallback.cc	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/gethostname.h"
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_GETHOSTNAME_FALLBACK
+
+#include <stddef.h>
+
+char* grpc_gethostname() { return NULL; }
+
+#endif  // GRPC_GETHOSTNAME_FALLBACK
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_host_name_max.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_host_name_max.cc
new file mode 100644
index 0000000..79f5daa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_host_name_max.cc	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/gethostname.h"
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_HOST_NAME_MAX
+
+#include <limits.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+
+char* grpc_gethostname() {
+  char* hostname = static_cast<char*>(gpr_malloc(HOST_NAME_MAX));
+  if (gethostname(hostname, HOST_NAME_MAX) != 0) {
+    gpr_free(hostname);
+    return nullptr;
+  }
+  return hostname;
+}
+
+#endif  // GRPC_POSIX_HOST_NAME_MAX
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_sysconf.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_sysconf.cc
new file mode 100644
index 0000000..92c5de3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/gethostname_sysconf.cc	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/gethostname.h"
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SYSCONF
+
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+
+char* grpc_gethostname() {
+  size_t host_name_max = (size_t)sysconf(_SC_HOST_NAME_MAX);
+  char* hostname = (char*)gpr_malloc(host_name_max);
+  if (gethostname(hostname, host_name_max) != 0) {
+    gpr_free(hostname);
+    return nullptr;
+  }
+  return hostname;
+}
+
+#endif  // GRPC_POSIX_SYSCONF
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex.h
new file mode 100644
index 0000000..ed9612d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H
+#define GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+/* Returns the interface index corresponding to the interface "name" provided.
+ * Returns non-zero upon success, and zero upon failure. */
+uint32_t grpc_if_nametoindex(char* name);
+
+#endif /* GRPC_CORE_LIB_IOMGR_GRPC_IF_NAMETOINDEX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc
new file mode 100644
index 0000000..f1ba20d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_posix.cc	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#if GRPC_IF_NAMETOINDEX == 1 && defined(GRPC_POSIX_SOCKET_IF_NAMETOINDEX)
+
+#include "src/core/lib/iomgr/grpc_if_nametoindex.h"
+
+#include <errno.h>
+#include <net/if.h>
+
+#include <grpc/support/log.h>
+
+uint32_t grpc_if_nametoindex(char* name) {
+  uint32_t out = if_nametoindex(name);
+  if (out == 0) {
+    gpr_log(GPR_DEBUG, "if_nametoindex failed for name %s. errno %d", name,
+            errno);
+  }
+  return out;
+}
+
+#endif /* GRPC_IF_NAMETOINDEX == 1 && \
+          defined(GRPC_POSIX_SOCKET_IF_NAMETOINDEX) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_unsupported.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_unsupported.cc
new file mode 100644
index 0000000..08644cc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/grpc_if_nametoindex_unsupported.cc	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#if GRPC_IF_NAMETOINDEX == 0 || !defined(GRPC_POSIX_SOCKET_IF_NAMETOINDEX)
+
+#include "src/core/lib/iomgr/grpc_if_nametoindex.h"
+
+#include <grpc/support/log.h>
+
+uint32_t grpc_if_nametoindex(char* name) {
+  gpr_log(GPR_DEBUG,
+          "Not attempting to convert interface name %s to index for current "
+          "platform.",
+          name);
+  return 0;
+}
+
+#endif /* GRPC_IF_NAMETOINDEX == 0 || \
+          !defined(GRPC_POSIX_SOCKET_IF_NAMETOINDEX) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.cc
new file mode 100644
index 0000000..b68c66b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.cc	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/impl/codegen/log.h>
+#include "src/core/lib/iomgr/internal_errqueue.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+namespace grpc_core {
+static bool errqueue_supported = false;
+
+bool kernel_supports_errqueue() { return errqueue_supported; }
+
+void grpc_errqueue_init() {
+/* Both-compile time and run-time linux kernel versions should be at least 4.0.0
+ */
+#ifdef GRPC_LINUX_ERRQUEUE
+  struct utsname buffer;
+  if (uname(&buffer) != 0) {
+    gpr_log(GPR_ERROR, "uname: %s", strerror(errno));
+    return;
+  }
+  char* release = buffer.release;
+  if (release == nullptr) {
+    return;
+  }
+
+  if (strtol(release, nullptr, 10) >= 4) {
+    errqueue_supported = true;
+  } else {
+    gpr_log(GPR_DEBUG, "ERRQUEUE support not enabled");
+  }
+#endif /* GRPC_LINUX_ERRQUEUE */
+}
+} /* namespace grpc_core */
+
+#else
+
+namespace grpc_core {
+void grpc_errqueue_init() {}
+} /* namespace grpc_core */
+
+#endif /* GRPC_POSIX_SOCKET_TCP */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.h
new file mode 100644
index 0000000..b9fe411
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/internal_errqueue.h	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This file contains constants defined in <linux/errqueue.h> and
+ * <linux/net_tstamp.h> so as to allow collecting network timestamps in the
+ * kernel. This file allows tcp_posix.cc to compile on platforms that do not
+ * have <linux/errqueue.h> and <linux/net_tstamp.h>.
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include <sys/types.h>
+#include <time.h>
+
+#ifdef GRPC_LINUX_ERRQUEUE
+#include <linux/errqueue.h>
+#include <linux/net_tstamp.h>
+#include <linux/netlink.h>
+#include <sys/socket.h>
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+namespace grpc_core {
+
+#ifdef GRPC_LINUX_ERRQUEUE
+
+/* Redefining scm_timestamping in the same way that <linux/errqueue.h> defines
+ * it, so that code compiles on systems that don't have it. */
+struct scm_timestamping {
+  struct timespec ts[3];
+};
+/* Also redefine timestamp types */
+/* The timestamp type for when the driver passed skb to NIC, or HW. */
+constexpr int SCM_TSTAMP_SND = 0;
+/* The timestamp type for when data entered the packet scheduler. */
+constexpr int SCM_TSTAMP_SCHED = 1;
+/* The timestamp type for when data acknowledged by peer. */
+constexpr int SCM_TSTAMP_ACK = 2;
+
+/* Control message type containing OPT_STATS */
+#ifndef SCM_TIMESTAMPING_OPT_STATS
+#define SCM_TIMESTAMPING_OPT_STATS 54
+#endif
+
+/* Redefine required constants from <linux/net_tstamp.h> */
+constexpr uint32_t SOF_TIMESTAMPING_TX_SOFTWARE = 1u << 1;
+constexpr uint32_t SOF_TIMESTAMPING_SOFTWARE = 1u << 4;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_ID = 1u << 7;
+constexpr uint32_t SOF_TIMESTAMPING_TX_SCHED = 1u << 8;
+constexpr uint32_t SOF_TIMESTAMPING_TX_ACK = 1u << 9;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_TSONLY = 1u << 11;
+constexpr uint32_t SOF_TIMESTAMPING_OPT_STATS = 1u << 12;
+
+constexpr uint32_t kTimestampingSocketOptions =
+    SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_OPT_ID |
+    SOF_TIMESTAMPING_OPT_TSONLY | SOF_TIMESTAMPING_OPT_STATS;
+constexpr uint32_t kTimestampingRecordingOptions =
+    SOF_TIMESTAMPING_TX_SCHED | SOF_TIMESTAMPING_TX_SOFTWARE |
+    SOF_TIMESTAMPING_TX_ACK;
+
+/* Netlink attribute types used for TCP opt stats. */
+enum TCPOptStats {
+  TCP_NLA_PAD,
+  TCP_NLA_BUSY,           /* Time (usec) busy sending data. */
+  TCP_NLA_RWND_LIMITED,   /* Time (usec) limited by receive window. */
+  TCP_NLA_SNDBUF_LIMITED, /* Time (usec) limited by send buffer. */
+  TCP_NLA_DATA_SEGS_OUT,  /* Data pkts sent including retransmission. */
+  TCP_NLA_TOTAL_RETRANS,  /* Data pkts retransmitted. */
+  TCP_NLA_PACING_RATE,    /* Pacing rate in Bps. */
+  TCP_NLA_DELIVERY_RATE,  /* Delivery rate in Bps. */
+  TCP_NLA_SND_CWND,       /* Sending congestion window. */
+  TCP_NLA_REORDERING,     /* Reordering metric. */
+  TCP_NLA_MIN_RTT,        /* minimum RTT. */
+  TCP_NLA_RECUR_RETRANS,  /* Recurring retransmits for the current pkt. */
+  TCP_NLA_DELIVERY_RATE_APP_LMT, /* Delivery rate application limited? */
+  TCP_NLA_SNDQ_SIZE,             /* Data (bytes) pending in send queue */
+  TCP_NLA_CA_STATE,              /* ca_state of socket */
+  TCP_NLA_SND_SSTHRESH,          /* Slow start size threshold */
+  TCP_NLA_DELIVERED,             /* Data pkts delivered incl. out-of-order */
+  TCP_NLA_DELIVERED_CE,          /* Like above but only ones w/ CE marks */
+  TCP_NLA_BYTES_SENT,            /* Data bytes sent including retransmission */
+  TCP_NLA_BYTES_RETRANS,         /* Data bytes retransmitted */
+  TCP_NLA_DSACK_DUPS,            /* DSACK blocks received */
+  TCP_NLA_REORD_SEEN,            /* reordering events seen */
+  TCP_NLA_SRTT,                  /* smoothed RTT in usecs */
+};
+
+/* tcp_info from from linux/tcp.h */
+struct tcp_info {
+  uint8_t tcpi_state;
+  uint8_t tcpi_ca_state;
+  uint8_t tcpi_retransmits;
+  uint8_t tcpi_probes;
+  uint8_t tcpi_backoff;
+  uint8_t tcpi_options;
+  uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
+  uint8_t tcpi_delivery_rate_app_limited : 1;
+  uint32_t tcpi_rto;
+  uint32_t tcpi_ato;
+  uint32_t tcpi_snd_mss;
+  uint32_t tcpi_rcv_mss;
+  uint32_t tcpi_unacked;
+  uint32_t tcpi_sacked;
+  uint32_t tcpi_lost;
+  uint32_t tcpi_retrans;
+  uint32_t tcpi_fackets;
+  /* Times. */
+  uint32_t tcpi_last_data_sent;
+  uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */
+  uint32_t tcpi_last_data_recv;
+  uint32_t tcpi_last_ack_recv;
+  /* Metrics. */
+  uint32_t tcpi_pmtu;
+  uint32_t tcpi_rcv_ssthresh;
+  uint32_t tcpi_rtt;
+  uint32_t tcpi_rttvar;
+  uint32_t tcpi_snd_ssthresh;
+  uint32_t tcpi_snd_cwnd;
+  uint32_t tcpi_advmss;
+  uint32_t tcpi_reordering;
+  uint32_t tcpi_rcv_rtt;
+  uint32_t tcpi_rcv_space;
+  uint32_t tcpi_total_retrans;
+  uint64_t tcpi_pacing_rate;
+  uint64_t tcpi_max_pacing_rate;
+  uint64_t tcpi_bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked */
+  uint64_t tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */
+
+  uint32_t tcpi_segs_out; /* RFC4898 tcpEStatsPerfSegsOut */
+  uint32_t tcpi_segs_in;  /* RFC4898 tcpEStatsPerfSegsIn */
+  uint32_t tcpi_notsent_bytes;
+  uint32_t tcpi_min_rtt;
+
+  uint32_t tcpi_data_segs_in;  /* RFC4898 tcpEStatsDataSegsIn */
+  uint32_t tcpi_data_segs_out; /* RFC4898 tcpEStatsDataSegsOut */
+
+  uint64_t tcpi_delivery_rate;
+  uint64_t tcpi_busy_time;      /* Time (usec) busy sending data */
+  uint64_t tcpi_rwnd_limited;   /* Time (usec) limited by receive window */
+  uint64_t tcpi_sndbuf_limited; /* Time (usec) limited by send buffer */
+
+  uint32_t tcpi_delivered;
+  uint32_t tcpi_delivered_ce;
+  uint64_t tcpi_bytes_sent;    /* RFC4898 tcpEStatsPerfHCDataOctetsOut */
+  uint64_t tcpi_bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans */
+  uint32_t tcpi_dsack_dups;    /* RFC4898 tcpEStatsStackDSACKDups */
+  uint32_t tcpi_reord_seen;    /* reordering events seen */
+  socklen_t length;            /* Length of struct returned by kernel */
+};
+
+#ifndef TCP_INFO
+#define TCP_INFO 11
+#endif
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+/* Returns true if kernel is capable of supporting errqueue and timestamping.
+ * Currently allowing only linux kernels above 4.0.0
+ */
+bool kernel_supports_errqueue();
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_POSIX_SOCKET_TCP */
+
+namespace grpc_core {
+/* Initializes errqueue support */
+void grpc_errqueue_init();
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_INTERNAL_ERRQUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.cc
new file mode 100644
index 0000000..29a05ee
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.cc	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <winsock2.h>
+#include <limits>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/timer.h"
+
+static ULONG g_iocp_kick_token;
+static OVERLAPPED g_iocp_custom_overlap;
+
+static gpr_atm g_custom_events = 0;
+
+static HANDLE g_iocp;
+
+static DWORD deadline_to_millis_timeout(grpc_millis deadline) {
+  if (deadline == GRPC_MILLIS_INF_FUTURE) {
+    return INFINITE;
+  }
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+  if (deadline < now) return 0;
+  grpc_millis timeout = deadline - now;
+  if (timeout > std::numeric_limits<DWORD>::max()) return INFINITE;
+  return static_cast<DWORD>(deadline - now);
+}
+
+grpc_iocp_work_status grpc_iocp_work(grpc_millis deadline) {
+  BOOL success;
+  DWORD bytes = 0;
+  DWORD flags = 0;
+  ULONG_PTR completion_key;
+  LPOVERLAPPED overlapped;
+  grpc_winsocket* socket;
+  grpc_winsocket_callback_info* info;
+  GRPC_STATS_INC_SYSCALL_POLL();
+  success =
+      GetQueuedCompletionStatus(g_iocp, &bytes, &completion_key, &overlapped,
+                                deadline_to_millis_timeout(deadline));
+  grpc_core::ExecCtx::Get()->InvalidateNow();
+  if (success == 0 && overlapped == NULL) {
+    return GRPC_IOCP_WORK_TIMEOUT;
+  }
+  GPR_ASSERT(completion_key && overlapped);
+  if (overlapped == &g_iocp_custom_overlap) {
+    gpr_atm_full_fetch_add(&g_custom_events, -1);
+    if (completion_key == (ULONG_PTR)&g_iocp_kick_token) {
+      /* We were awoken from a kick. */
+      return GRPC_IOCP_WORK_KICK;
+    }
+    gpr_log(GPR_ERROR, "Unknown custom completion key.");
+    abort();
+  }
+
+  socket = (grpc_winsocket*)completion_key;
+  if (overlapped == &socket->write_info.overlapped) {
+    info = &socket->write_info;
+  } else if (overlapped == &socket->read_info.overlapped) {
+    info = &socket->read_info;
+  } else {
+    abort();
+  }
+  if (socket->shutdown_called) {
+    info->bytes_transferred = 0;
+    info->wsa_error = WSA_OPERATION_ABORTED;
+  } else {
+    success = WSAGetOverlappedResult(socket->socket, &info->overlapped, &bytes,
+                                     FALSE, &flags);
+    info->bytes_transferred = bytes;
+    info->wsa_error = success ? 0 : WSAGetLastError();
+  }
+  GPR_ASSERT(overlapped == &info->overlapped);
+  grpc_socket_become_ready(socket, info);
+  return GRPC_IOCP_WORK_WORK;
+}
+
+void grpc_iocp_init(void) {
+  g_iocp =
+      CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)NULL, 0);
+  GPR_ASSERT(g_iocp);
+}
+
+void grpc_iocp_kick(void) {
+  BOOL success;
+
+  gpr_atm_full_fetch_add(&g_custom_events, 1);
+  success = PostQueuedCompletionStatus(g_iocp, 0, (ULONG_PTR)&g_iocp_kick_token,
+                                       &g_iocp_custom_overlap);
+  GPR_ASSERT(success);
+}
+
+void grpc_iocp_flush(void) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_iocp_work_status work_status;
+
+  do {
+    work_status = grpc_iocp_work(GRPC_MILLIS_INF_PAST);
+  } while (work_status == GRPC_IOCP_WORK_KICK ||
+           grpc_core::ExecCtx::Get()->Flush());
+}
+
+void grpc_iocp_shutdown(void) {
+  grpc_core::ExecCtx exec_ctx;
+  while (gpr_atm_acq_load(&g_custom_events)) {
+    grpc_iocp_work(GRPC_MILLIS_INF_FUTURE);
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+
+  GPR_ASSERT(CloseHandle(g_iocp));
+}
+
+void grpc_iocp_add_socket(grpc_winsocket* socket) {
+  HANDLE ret;
+  if (socket->added_to_iocp) return;
+  ret = CreateIoCompletionPort((HANDLE)socket->socket, g_iocp,
+                               (uintptr_t)socket, 0);
+  if (!ret) {
+    char* utf8_message = gpr_format_message(WSAGetLastError());
+    gpr_log(GPR_ERROR, "Unable to add socket to iocp: %s", utf8_message);
+    gpr_free(utf8_message);
+    __debugbreak();
+    abort();
+  }
+  socket->added_to_iocp = 1;
+  GPR_ASSERT(ret == g_iocp);
+}
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.h
new file mode 100644
index 0000000..68d9de6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iocp_windows.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+typedef enum {
+  GRPC_IOCP_WORK_WORK,
+  GRPC_IOCP_WORK_TIMEOUT,
+  GRPC_IOCP_WORK_KICK
+} grpc_iocp_work_status;
+
+grpc_iocp_work_status grpc_iocp_work(grpc_millis deadline);
+void grpc_iocp_init(void);
+void grpc_iocp_kick(void);
+void grpc_iocp_flush(void);
+void grpc_iocp_shutdown(void);
+void grpc_iocp_add_socket(grpc_winsocket*);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.cc
new file mode 100644
index 0000000..802e3bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.cc	
@@ -0,0 +1,194 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/iomgr.h"
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/buffer_list.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/internal_errqueue.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+
+GPR_GLOBAL_CONFIG_DEFINE_BOOL(grpc_abort_on_leaks, false,
+                              "A debugging aid to cause a call to abort() when "
+                              "gRPC objects are leaked past grpc_shutdown()");
+
+static gpr_mu g_mu;
+static gpr_cv g_rcv;
+static int g_shutdown;
+static grpc_iomgr_object g_root_object;
+static bool g_grpc_abort_on_leaks;
+
+void grpc_iomgr_init() {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_determine_iomgr_platform();
+  g_shutdown = 0;
+  gpr_mu_init(&g_mu);
+  gpr_cv_init(&g_rcv);
+  grpc_core::Executor::InitAll();
+  g_root_object.next = g_root_object.prev = &g_root_object;
+  g_root_object.name = (char*)"root";
+  grpc_iomgr_platform_init();
+  grpc_timer_list_init();
+  grpc_core::grpc_errqueue_init();
+  g_grpc_abort_on_leaks = GPR_GLOBAL_CONFIG_GET(grpc_abort_on_leaks);
+}
+
+void grpc_iomgr_start() { grpc_timer_manager_init(); }
+
+static size_t count_objects(void) {
+  grpc_iomgr_object* obj;
+  size_t n = 0;
+  for (obj = g_root_object.next; obj != &g_root_object; obj = obj->next) {
+    n++;
+  }
+  return n;
+}
+
+size_t grpc_iomgr_count_objects_for_testing(void) { return count_objects(); }
+
+static void dump_objects(const char* kind) {
+  grpc_iomgr_object* obj;
+  for (obj = g_root_object.next; obj != &g_root_object; obj = obj->next) {
+    gpr_log(GPR_DEBUG, "%s OBJECT: %s %p", kind, obj->name, obj);
+  }
+}
+
+void grpc_iomgr_shutdown() {
+  gpr_timespec shutdown_deadline = gpr_time_add(
+      gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_seconds(10, GPR_TIMESPAN));
+  gpr_timespec last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
+
+  {
+    grpc_timer_manager_shutdown();
+    grpc_iomgr_platform_flush();
+    grpc_core::Executor::ShutdownAll();
+
+    gpr_mu_lock(&g_mu);
+    g_shutdown = 1;
+    while (g_root_object.next != &g_root_object) {
+      if (gpr_time_cmp(
+              gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), last_warning_time),
+              gpr_time_from_seconds(1, GPR_TIMESPAN)) >= 0) {
+        if (g_root_object.next != &g_root_object) {
+          gpr_log(GPR_DEBUG,
+                  "Waiting for %" PRIuPTR " iomgr objects to be destroyed",
+                  count_objects());
+        }
+        last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
+      }
+      grpc_core::ExecCtx::Get()->SetNowIomgrShutdown();
+      if (grpc_timer_check(nullptr) == GRPC_TIMERS_FIRED) {
+        gpr_mu_unlock(&g_mu);
+        grpc_core::ExecCtx::Get()->Flush();
+        grpc_iomgr_platform_flush();
+        gpr_mu_lock(&g_mu);
+        continue;
+      }
+      if (g_root_object.next != &g_root_object) {
+        if (grpc_iomgr_abort_on_leaks()) {
+          gpr_log(GPR_DEBUG,
+                  "Failed to free %" PRIuPTR
+                  " iomgr objects before shutdown deadline: "
+                  "memory leaks are likely",
+                  count_objects());
+          dump_objects("LEAKED");
+          abort();
+        }
+        gpr_timespec short_deadline =
+            gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                         gpr_time_from_millis(100, GPR_TIMESPAN));
+        if (gpr_cv_wait(&g_rcv, &g_mu, short_deadline)) {
+          if (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), shutdown_deadline) >
+              0) {
+            if (g_root_object.next != &g_root_object) {
+              gpr_log(GPR_DEBUG,
+                      "Failed to free %" PRIuPTR
+                      " iomgr objects before shutdown deadline: "
+                      "memory leaks are likely",
+                      count_objects());
+              dump_objects("LEAKED");
+            }
+            break;
+          }
+        }
+      }
+    }
+    gpr_mu_unlock(&g_mu);
+    grpc_timer_list_shutdown();
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+
+  /* ensure all threads have left g_mu */
+  gpr_mu_lock(&g_mu);
+  gpr_mu_unlock(&g_mu);
+
+  grpc_iomgr_platform_shutdown();
+  gpr_mu_destroy(&g_mu);
+  gpr_cv_destroy(&g_rcv);
+}
+
+void grpc_iomgr_shutdown_background_closure() {
+  grpc_iomgr_platform_shutdown_background_closure();
+}
+
+bool grpc_iomgr_is_any_background_poller_thread() {
+  return grpc_iomgr_platform_is_any_background_poller_thread();
+}
+
+bool grpc_iomgr_add_closure_to_background_poller(grpc_closure* closure,
+                                                 grpc_error* error) {
+  return grpc_iomgr_platform_add_closure_to_background_poller(closure, error);
+}
+
+void grpc_iomgr_register_object(grpc_iomgr_object* obj, const char* name) {
+  obj->name = gpr_strdup(name);
+  gpr_mu_lock(&g_mu);
+  obj->next = &g_root_object;
+  obj->prev = g_root_object.prev;
+  obj->next->prev = obj->prev->next = obj;
+  gpr_mu_unlock(&g_mu);
+}
+
+void grpc_iomgr_unregister_object(grpc_iomgr_object* obj) {
+  gpr_mu_lock(&g_mu);
+  obj->next->prev = obj->prev;
+  obj->prev->next = obj->next;
+  gpr_cv_signal(&g_rcv);
+  gpr_mu_unlock(&g_mu);
+  gpr_free(obj->name);
+}
+
+bool grpc_iomgr_abort_on_leaks(void) { return g_grpc_abort_on_leaks; }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.h
new file mode 100644
index 0000000..e02f15e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/port.h"
+
+#include <stdlib.h>
+
+/** Initializes the iomgr. */
+void grpc_iomgr_init();
+
+/** Starts any background threads for iomgr. */
+void grpc_iomgr_start();
+
+/** Signals the intention to shutdown the iomgr. Expects to be able to flush
+ * exec_ctx. */
+void grpc_iomgr_shutdown();
+
+/** Signals the intention to shutdown all the closures registered in the
+ * background poller. */
+void grpc_iomgr_shutdown_background_closure();
+
+/* Returns true if polling engine runs in the background, false otherwise.
+ * Currently only 'epollbg' runs in the background.
+ */
+bool grpc_iomgr_run_in_background();
+
+/** Returns true if the caller is a worker thread for any background poller. */
+bool grpc_iomgr_is_any_background_poller_thread();
+
+/** Returns true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_iomgr_add_closure_to_background_poller(grpc_closure* closure,
+                                                 grpc_error* error);
+
+/* Exposed only for testing */
+size_t grpc_iomgr_count_objects_for_testing();
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.cc
new file mode 100644
index 0000000..684044a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.cc	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/thd_id.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset_custom.h"
+#include "src/core/lib/iomgr/pollset_set_custom.h"
+#include "src/core/lib/iomgr/resolve_address_custom.h"
+
+gpr_thd_id g_init_thread;
+
+static void iomgr_platform_init(void) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_core::Executor::SetThreadingAll(false);
+  g_init_thread = gpr_thd_currentid();
+  grpc_pollset_global_init();
+}
+static void iomgr_platform_flush(void) {}
+static void iomgr_platform_shutdown(void) { grpc_pollset_global_shutdown(); }
+static void iomgr_platform_shutdown_background_closure(void) {}
+static bool iomgr_platform_is_any_background_poller_thread(void) {
+  return false;
+}
+static bool iomgr_platform_add_closure_to_background_poller(
+    grpc_closure* /*closure*/, grpc_error* /*error*/) {
+  return false;
+}
+
+bool g_custom_iomgr_enabled = false;
+
+static grpc_iomgr_platform_vtable vtable = {
+    iomgr_platform_init,
+    iomgr_platform_flush,
+    iomgr_platform_shutdown,
+    iomgr_platform_shutdown_background_closure,
+    iomgr_platform_is_any_background_poller_thread,
+    iomgr_platform_add_closure_to_background_poller};
+
+void grpc_custom_iomgr_init(grpc_socket_vtable* socket,
+                            grpc_custom_resolver_vtable* resolver,
+                            grpc_custom_timer_vtable* timer,
+                            grpc_custom_poller_vtable* poller) {
+  g_custom_iomgr_enabled = true;
+  grpc_custom_endpoint_init(socket);
+  grpc_custom_timer_init(timer);
+  grpc_custom_pollset_init(poller);
+  grpc_custom_pollset_set_init();
+  grpc_custom_resolver_init(resolver);
+  grpc_set_iomgr_platform_vtable(&vtable);
+}
+
+#ifdef GRPC_CUSTOM_SOCKET
+grpc_iomgr_platform_vtable* grpc_default_iomgr_platform_vtable() {
+  return &vtable;
+}
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.h
new file mode 100644
index 0000000..e6a8884
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_custom.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset_custom.h"
+#include "src/core/lib/iomgr/resolve_address_custom.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/timer_custom.h"
+
+#include <grpc/support/thd_id.h>
+
+/* The thread ID of the thread on which grpc was initialized. Used to verify
+ * that all calls into the custom iomgr are made on that same thread */
+extern gpr_thd_id g_init_thread;
+
+#ifdef GRPC_CUSTOM_IOMGR_THREAD_CHECK
+#define GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD() \
+  GPR_ASSERT(gpr_thd_currentid() == g_init_thread)
+#else
+#define GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD()
+#endif /* GRPC_CUSTOM_IOMGR_THREAD_CHECK */
+
+extern bool g_custom_iomgr_enabled;
+
+void grpc_custom_iomgr_init(grpc_socket_vtable* socket,
+                            grpc_custom_resolver_vtable* resolver,
+                            grpc_custom_timer_vtable* timer,
+                            grpc_custom_poller_vtable* poller);
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.cc
new file mode 100644
index 0000000..896d9fc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.cc	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+
+static grpc_iomgr_platform_vtable* iomgr_platform_vtable = nullptr;
+
+void grpc_set_iomgr_platform_vtable(grpc_iomgr_platform_vtable* vtable) {
+  iomgr_platform_vtable = vtable;
+}
+
+void grpc_determine_iomgr_platform() {
+  if (iomgr_platform_vtable == nullptr) {
+    grpc_set_default_iomgr_platform();
+  }
+}
+
+void grpc_iomgr_platform_init() { iomgr_platform_vtable->init(); }
+
+void grpc_iomgr_platform_flush() { iomgr_platform_vtable->flush(); }
+
+void grpc_iomgr_platform_shutdown() { iomgr_platform_vtable->shutdown(); }
+
+void grpc_iomgr_platform_shutdown_background_closure() {
+  iomgr_platform_vtable->shutdown_background_closure();
+}
+
+bool grpc_iomgr_platform_is_any_background_poller_thread() {
+  return iomgr_platform_vtable->is_any_background_poller_thread();
+}
+
+bool grpc_iomgr_platform_add_closure_to_background_poller(grpc_closure* closure,
+                                                          grpc_error* error) {
+  return iomgr_platform_vtable->add_closure_to_background_poller(closure,
+                                                                 error);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.h
new file mode 100644
index 0000000..17607f9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_internal.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/iomgr/iomgr.h"
+
+typedef struct grpc_iomgr_object {
+  char* name;
+  struct grpc_iomgr_object* next;
+  struct grpc_iomgr_object* prev;
+} grpc_iomgr_object;
+
+typedef struct grpc_iomgr_platform_vtable {
+  void (*init)(void);
+  void (*flush)(void);
+  void (*shutdown)(void);
+  void (*shutdown_background_closure)(void);
+  bool (*is_any_background_poller_thread)(void);
+  bool (*add_closure_to_background_poller)(grpc_closure* closure,
+                                           grpc_error* error);
+} grpc_iomgr_platform_vtable;
+
+void grpc_iomgr_register_object(grpc_iomgr_object* obj, const char* name);
+void grpc_iomgr_unregister_object(grpc_iomgr_object* obj);
+
+void grpc_determine_iomgr_platform();
+
+void grpc_set_iomgr_platform_vtable(grpc_iomgr_platform_vtable* vtable);
+
+void grpc_set_default_iomgr_platform();
+
+void grpc_iomgr_platform_init(void);
+/** flush any globally queued work from iomgr */
+void grpc_iomgr_platform_flush(void);
+/** tear down all platform specific global iomgr structures */
+void grpc_iomgr_platform_shutdown(void);
+
+/** shut down all the closures registered in the background poller */
+void grpc_iomgr_platform_shutdown_background_closure(void);
+
+/** return true if the caller is a worker thread for any background poller */
+bool grpc_iomgr_platform_is_any_background_poller_thread(void);
+
+/** Return true if the closure is registered into the background poller. Note
+ * that the closure may or may not run yet when this function returns, and the
+ * closure should not be blocking or long-running. */
+bool grpc_iomgr_platform_add_closure_to_background_poller(grpc_closure* closure,
+                                                          grpc_error* error);
+
+bool grpc_iomgr_abort_on_leaks(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.cc
new file mode 100644
index 0000000..de22d20
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.cc	
@@ -0,0 +1,89 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_IOMGR
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/iomgr_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
+
+extern grpc_tcp_server_vtable grpc_posix_tcp_server_vtable;
+extern grpc_tcp_client_vtable grpc_posix_tcp_client_vtable;
+extern grpc_timer_vtable grpc_generic_timer_vtable;
+extern grpc_pollset_vtable grpc_posix_pollset_vtable;
+extern grpc_pollset_set_vtable grpc_posix_pollset_set_vtable;
+extern grpc_address_resolver_vtable grpc_posix_resolver_vtable;
+
+static void iomgr_platform_init(void) {
+  grpc_wakeup_fd_global_init();
+  grpc_event_engine_init();
+}
+
+static void iomgr_platform_flush(void) {}
+
+static void iomgr_platform_shutdown(void) {
+  grpc_event_engine_shutdown();
+  grpc_wakeup_fd_global_destroy();
+}
+
+static void iomgr_platform_shutdown_background_closure(void) {
+  grpc_shutdown_background_closure();
+}
+
+static bool iomgr_platform_is_any_background_poller_thread(void) {
+  return grpc_is_any_background_poller_thread();
+}
+
+static bool iomgr_platform_add_closure_to_background_poller(
+    grpc_closure* closure, grpc_error* error) {
+  return grpc_add_closure_to_background_poller(closure, error);
+}
+
+static grpc_iomgr_platform_vtable vtable = {
+    iomgr_platform_init,
+    iomgr_platform_flush,
+    iomgr_platform_shutdown,
+    iomgr_platform_shutdown_background_closure,
+    iomgr_platform_is_any_background_poller_thread,
+    iomgr_platform_add_closure_to_background_poller};
+
+void grpc_set_default_iomgr_platform() {
+  grpc_set_tcp_client_impl(&grpc_posix_tcp_client_vtable);
+  grpc_set_tcp_server_impl(&grpc_posix_tcp_server_vtable);
+  grpc_set_timer_impl(&grpc_generic_timer_vtable);
+  grpc_set_pollset_vtable(&grpc_posix_pollset_vtable);
+  grpc_set_pollset_set_vtable(&grpc_posix_pollset_set_vtable);
+  grpc_set_resolver_impl(&grpc_posix_resolver_vtable);
+  grpc_set_iomgr_platform_vtable(&vtable);
+}
+
+bool grpc_iomgr_run_in_background() {
+  return grpc_event_engine_run_in_background();
+}
+
+#endif /* GRPC_POSIX_SOCKET_IOMGR */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.h
new file mode 100644
index 0000000..54ec46e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/iomgr_internal.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix_cfstream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix_cfstream.cc
new file mode 100644
index 0000000..72b2ae5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_posix_cfstream.cc	
@@ -0,0 +1,107 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM_IOMGR
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/iomgr_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
+
+static const char* grpc_cfstream_env_var = "grpc_cfstream";
+
+extern grpc_tcp_server_vtable grpc_posix_tcp_server_vtable;
+extern grpc_tcp_client_vtable grpc_posix_tcp_client_vtable;
+extern grpc_tcp_client_vtable grpc_cfstream_client_vtable;
+extern grpc_timer_vtable grpc_generic_timer_vtable;
+extern grpc_pollset_vtable grpc_posix_pollset_vtable;
+extern grpc_pollset_set_vtable grpc_posix_pollset_set_vtable;
+extern grpc_address_resolver_vtable grpc_posix_resolver_vtable;
+
+static void iomgr_platform_init(void) {
+  grpc_wakeup_fd_global_init();
+  grpc_event_engine_init();
+}
+
+static void iomgr_platform_flush(void) {}
+
+static void iomgr_platform_shutdown(void) {
+  grpc_event_engine_shutdown();
+  grpc_wakeup_fd_global_destroy();
+}
+
+static void iomgr_platform_shutdown_background_closure(void) {
+  grpc_shutdown_background_closure();
+}
+
+static bool iomgr_platform_is_any_background_poller_thread(void) {
+  return grpc_is_any_background_poller_thread();
+}
+
+static bool iomgr_platform_add_closure_to_background_poller(
+    grpc_closure* closure, grpc_error* error) {
+  return grpc_add_closure_to_background_poller(closure, error);
+}
+
+static grpc_iomgr_platform_vtable vtable = {
+    iomgr_platform_init,
+    iomgr_platform_flush,
+    iomgr_platform_shutdown,
+    iomgr_platform_shutdown_background_closure,
+    iomgr_platform_is_any_background_poller_thread,
+    iomgr_platform_add_closure_to_background_poller};
+
+void grpc_set_default_iomgr_platform() {
+  char* enable_cfstream = getenv(grpc_cfstream_env_var);
+  grpc_tcp_client_vtable* client_vtable = &grpc_posix_tcp_client_vtable;
+  // CFStream is enabled by default on iOS, and disabled by default on other
+  // platforms. Defaults can be overriden by setting the grpc_cfstream
+  // environment variable.
+#if TARGET_OS_IPHONE
+  if (enable_cfstream == nullptr || enable_cfstream[0] == '1') {
+    client_vtable = &grpc_cfstream_client_vtable;
+  }
+#else
+  if (enable_cfstream != nullptr && enable_cfstream[0] == '1') {
+    client_vtable = &grpc_cfstream_client_vtable;
+  }
+#endif
+
+  grpc_set_tcp_client_impl(client_vtable);
+  grpc_set_tcp_server_impl(&grpc_posix_tcp_server_vtable);
+  grpc_set_timer_impl(&grpc_generic_timer_vtable);
+  grpc_set_pollset_vtable(&grpc_posix_pollset_vtable);
+  grpc_set_pollset_set_vtable(&grpc_posix_pollset_set_vtable);
+  grpc_set_resolver_impl(&grpc_posix_resolver_vtable);
+  grpc_set_iomgr_platform_vtable(&vtable);
+}
+
+bool grpc_iomgr_run_in_background() {
+  return grpc_event_engine_run_in_background();
+}
+
+#endif /* GRPC_CFSTREAM_IOMGR */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_uv.cc
new file mode 100644
index 0000000..a617239
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_uv.cc	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#if defined(GRPC_CUSTOM_SOCKET) && defined(GRPC_UV)
+
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset_custom.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/timer_custom.h"
+
+extern grpc_socket_vtable grpc_uv_socket_vtable;
+extern grpc_custom_resolver_vtable uv_resolver_vtable;
+extern grpc_custom_timer_vtable uv_timer_vtable;
+extern grpc_custom_poller_vtable uv_pollset_vtable;
+
+void grpc_set_default_iomgr_platform() {
+  grpc_custom_iomgr_init(&grpc_uv_socket_vtable, &uv_resolver_vtable,
+                         &uv_timer_vtable, &uv_pollset_vtable);
+}
+
+bool grpc_iomgr_run_in_background() { return false; }
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_windows.cc
new file mode 100644
index 0000000..728d404
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/iomgr_windows.cc	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/timer.h"
+
+extern grpc_tcp_server_vtable grpc_windows_tcp_server_vtable;
+extern grpc_tcp_client_vtable grpc_windows_tcp_client_vtable;
+extern grpc_timer_vtable grpc_generic_timer_vtable;
+extern grpc_pollset_vtable grpc_windows_pollset_vtable;
+extern grpc_pollset_set_vtable grpc_windows_pollset_set_vtable;
+extern grpc_address_resolver_vtable grpc_windows_resolver_vtable;
+
+/* Windows' io manager is going to be fully designed using IO completion
+   ports. All of what we're doing here is basically make sure that
+   Windows sockets are initialized in and out. */
+
+static void winsock_init(void) {
+  WSADATA wsaData;
+  int status = WSAStartup(MAKEWORD(2, 0), &wsaData);
+  GPR_ASSERT(status == 0);
+}
+
+static void winsock_shutdown(void) {
+  int status = WSACleanup();
+  GPR_ASSERT(status == 0);
+}
+
+static void iomgr_platform_init(void) {
+  winsock_init();
+  grpc_iocp_init();
+  grpc_pollset_global_init();
+  grpc_wsa_socket_flags_init();
+}
+
+static void iomgr_platform_flush(void) { grpc_iocp_flush(); }
+
+static void iomgr_platform_shutdown(void) {
+  grpc_pollset_global_shutdown();
+  grpc_iocp_shutdown();
+  winsock_shutdown();
+}
+
+static void iomgr_platform_shutdown_background_closure(void) {}
+
+static bool iomgr_platform_is_any_background_poller_thread(void) {
+  return false;
+}
+
+static bool iomgr_platform_add_closure_to_background_poller(
+    grpc_closure* closure, grpc_error* error) {
+  return false;
+}
+
+static grpc_iomgr_platform_vtable vtable = {
+    iomgr_platform_init,
+    iomgr_platform_flush,
+    iomgr_platform_shutdown,
+    iomgr_platform_shutdown_background_closure,
+    iomgr_platform_is_any_background_poller_thread,
+    iomgr_platform_add_closure_to_background_poller};
+
+void grpc_set_default_iomgr_platform() {
+  grpc_set_tcp_client_impl(&grpc_windows_tcp_client_vtable);
+  grpc_set_tcp_server_impl(&grpc_windows_tcp_server_vtable);
+  grpc_set_timer_impl(&grpc_generic_timer_vtable);
+  grpc_set_pollset_vtable(&grpc_windows_pollset_vtable);
+  grpc_set_pollset_set_vtable(&grpc_windows_pollset_set_vtable);
+  grpc_set_resolver_impl(&grpc_windows_resolver_vtable);
+  grpc_set_iomgr_platform_vtable(&vtable);
+}
+
+bool grpc_iomgr_run_in_background() { return false; }
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.cc
new file mode 100644
index 0000000..8df6a66
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.cc	
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/iomgr/is_epollexclusive_available.h"
+
+#ifdef GRPC_LINUX_EPOLL_CREATE1
+
+#include <grpc/support/log.h>
+
+#include <errno.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <unistd.h>
+
+#include "src/core/lib/iomgr/sys_epoll_wrapper.h"
+
+/* This polling engine is only relevant on linux kernels supporting epoll() */
+bool grpc_is_epollexclusive_available(void) {
+  static bool logged_why_not = false;
+
+  int fd = epoll_create1(EPOLL_CLOEXEC);
+  if (fd < 0) {
+    if (!logged_why_not) {
+      gpr_log(GPR_DEBUG,
+              "epoll_create1 failed with error: %d. Not using epollex polling "
+              "engine.",
+              fd);
+      logged_why_not = true;
+    }
+    return false;
+  }
+  int evfd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
+  if (evfd < 0) {
+    if (!logged_why_not) {
+      gpr_log(GPR_DEBUG,
+              "eventfd failed with error: %d. Not using epollex polling "
+              "engine.",
+              fd);
+      logged_why_not = true;
+    }
+    close(fd);
+    return false;
+  }
+  struct epoll_event ev;
+  /* choose events that should cause an error on
+     EPOLLEXCLUSIVE enabled kernels - specifically the combination of
+     EPOLLONESHOT and EPOLLEXCLUSIVE */
+  ev.events =
+      static_cast<uint32_t>(EPOLLET | EPOLLIN | EPOLLEXCLUSIVE | EPOLLONESHOT);
+  ev.data.ptr = nullptr;
+  if (epoll_ctl(fd, EPOLL_CTL_ADD, evfd, &ev) != 0) {
+    if (errno != EINVAL) {
+      if (!logged_why_not) {
+        gpr_log(
+            GPR_ERROR,
+            "epoll_ctl with EPOLLEXCLUSIVE | EPOLLONESHOT failed with error: "
+            "%d. Not using epollex polling engine.",
+            errno);
+        logged_why_not = true;
+      }
+      close(fd);
+      close(evfd);
+      return false;
+    }
+  } else {
+    if (!logged_why_not) {
+      gpr_log(GPR_DEBUG,
+              "epoll_ctl with EPOLLEXCLUSIVE | EPOLLONESHOT succeeded. This is "
+              "evidence of no EPOLLEXCLUSIVE support. Not using "
+              "epollex polling engine.");
+      logged_why_not = true;
+    }
+    close(fd);
+    close(evfd);
+    return false;
+  }
+  close(evfd);
+  close(fd);
+  return true;
+}
+
+#else
+
+bool grpc_is_epollexclusive_available(void) { return false; }
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.h
new file mode 100644
index 0000000..8a44113
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/is_epollexclusive_available.h	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H
+#define GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool grpc_is_epollexclusive_available(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_IS_EPOLLEXCLUSIVE_AVAILABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.cc
new file mode 100644
index 0000000..4bed627
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.cc	
@@ -0,0 +1,81 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/load_file.h"
+
+#include <errno.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+
+grpc_error* grpc_load_file(const char* filename, int add_null_terminator,
+                           grpc_slice* output) {
+  unsigned char* contents = nullptr;
+  size_t contents_size = 0;
+  grpc_slice result = grpc_empty_slice();
+  FILE* file;
+  size_t bytes_read = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  GRPC_SCHEDULING_START_BLOCKING_REGION;
+  file = fopen(filename, "rb");
+  if (file == nullptr) {
+    error = GRPC_OS_ERROR(errno, "fopen");
+    goto end;
+  }
+  fseek(file, 0, SEEK_END);
+  /* Converting to size_t on the assumption that it will not fail */
+  contents_size = static_cast<size_t>(ftell(file));
+  fseek(file, 0, SEEK_SET);
+  contents = static_cast<unsigned char*>(
+      gpr_malloc(contents_size + (add_null_terminator ? 1 : 0)));
+  bytes_read = fread(contents, 1, contents_size, file);
+  if (bytes_read < contents_size) {
+    gpr_free(contents);
+    error = GRPC_OS_ERROR(errno, "fread");
+    GPR_ASSERT(ferror(file));
+    goto end;
+  }
+  if (add_null_terminator) {
+    contents[contents_size++] = 0;
+  }
+  result = grpc_slice_new(contents, contents_size, gpr_free);
+
+end:
+  *output = result;
+  if (file != nullptr) fclose(file);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error* error_out =
+        grpc_error_set_str(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                               "Failed to load file", &error, 1),
+                           GRPC_ERROR_STR_FILENAME,
+                           grpc_slice_from_copied_string(
+                               filename));  // TODO(ncteisen), always static?
+    GRPC_ERROR_UNREF(error);
+    error = error_out;
+  }
+  GRPC_SCHEDULING_END_BLOCKING_REGION_NO_EXEC_CTX;
+  return error;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.h
new file mode 100644
index 0000000..1cb2b5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/load_file.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_LOAD_FILE_H
+#define GRPC_CORE_LIB_IOMGR_LOAD_FILE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdio.h>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+/* Loads the content of a file into a slice. add_null_terminator will add
+   a NULL terminator if non-zero. */
+grpc_error* grpc_load_file(const char* filename, int add_null_terminator,
+                           grpc_slice* slice);
+
+#endif /* GRPC_CORE_LIB_IOMGR_LOAD_FILE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.cc
new file mode 100644
index 0000000..4b28af4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.cc	
@@ -0,0 +1,255 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/lockfree_event.h"
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_polling_trace;
+
+/* 'state' holds the to call when the fd is readable or writable respectively.
+   It can contain one of the following values:
+     kClosureReady     : The fd has an I/O event of interest but there is no
+                         closure yet to execute
+
+     kClosureNotReady : The fd has no I/O event of interest
+
+     closure ptr       : The closure to be executed when the fd has an I/O
+                         event of interest
+
+     shutdown_error | kShutdownBit :
+                        'shutdown_error' field ORed with kShutdownBit.
+                         This indicates that the fd is shutdown. Since all
+                         memory allocations are word-aligned, the lower two
+                         bits of the shutdown_error pointer are always 0. So
+                         it is safe to OR these with kShutdownBit
+
+   Valid state transitions:
+
+     <closure ptr> <-----3------ kClosureNotReady -----1------->  kClosureReady
+       |  |                         ^   |    ^                         |  |
+       |  |                         |   |    |                         |  |
+       |  +--------------4----------+   6    +---------2---------------+  |
+       |                                |                                 |
+       |                                v                                 |
+       +-----5------->  [shutdown_error | kShutdownBit] <-------7---------+
+
+    For 1, 4 : See SetReady() function
+    For 2, 3 : See NotifyOn() function
+    For 5,6,7: See SetShutdown() function */
+
+namespace grpc_core {
+
+LockfreeEvent::LockfreeEvent() { InitEvent(); }
+
+void LockfreeEvent::InitEvent() {
+  /* Perform an atomic store to start the state machine.
+
+     Note carefully that LockfreeEvent *MAY* be used whilst in a destroyed
+     state, while a file descriptor is on a freelist. In such a state it may
+     be SetReady'd, and so we need to perform an atomic operation here to
+     ensure no races */
+  gpr_atm_no_barrier_store(&state_, kClosureNotReady);
+}
+
+void LockfreeEvent::DestroyEvent() {
+  gpr_atm curr;
+  do {
+    curr = gpr_atm_no_barrier_load(&state_);
+    if (curr & kShutdownBit) {
+      GRPC_ERROR_UNREF((grpc_error*)(curr & ~kShutdownBit));
+    } else {
+      GPR_ASSERT(curr == kClosureNotReady || curr == kClosureReady);
+    }
+    /* we CAS in a shutdown, no error value here. If this event is interacted
+       with post-deletion (see the note in the constructor) we want the bit
+       pattern to prevent error retention in a deleted object */
+  } while (!gpr_atm_no_barrier_cas(&state_, curr,
+                                   kShutdownBit /* shutdown, no error */));
+}
+
+void LockfreeEvent::NotifyOn(grpc_closure* closure) {
+  while (true) {
+    /* This load needs to be an acquire load because this can be a shutdown
+     * error that we might need to reference. Adding acquire semantics makes
+     * sure that the shutdown error has been initialized properly before us
+     * referencing it. */
+    gpr_atm curr = gpr_atm_acq_load(&state_);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_DEBUG, "LockfreeEvent::NotifyOn: %p curr=%p closure=%p", this,
+              (void*)curr, closure);
+    }
+    switch (curr) {
+      case kClosureNotReady: {
+        /* kClosureNotReady -> <closure>.
+
+           We're guaranteed by API that there's an acquire barrier before here,
+           so there's no need to double-dip and this can be a release-only.
+
+           The release itself pairs with the acquire half of a set_ready full
+           barrier. */
+        if (gpr_atm_rel_cas(&state_, kClosureNotReady, (gpr_atm)closure)) {
+          return; /* Successful. Return */
+        }
+
+        break; /* retry */
+      }
+
+      case kClosureReady: {
+        /* Change the state to kClosureNotReady. Schedule the closure if
+           successful. If not, the state most likely transitioned to shutdown.
+           We should retry.
+
+           This can be a no-barrier cas since the state is being transitioned to
+           kClosureNotReady; set_ready and set_shutdown do not schedule any
+           closure when transitioning out of CLOSURE_NO_READY state (i.e there
+           is no other code that needs to 'happen-after' this) */
+        if (gpr_atm_no_barrier_cas(&state_, kClosureReady, kClosureNotReady)) {
+          ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+          return; /* Successful. Return */
+        }
+
+        break; /* retry */
+      }
+
+      default: {
+        /* 'curr' is either a closure or the fd is shutdown(in which case 'curr'
+           contains a pointer to the shutdown-error). If the fd is shutdown,
+           schedule the closure with the shutdown error */
+        if ((curr & kShutdownBit) > 0) {
+          grpc_error* shutdown_err = (grpc_error*)(curr & ~kShutdownBit);
+          ExecCtx::Run(DEBUG_LOCATION, closure,
+                       GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                           "FD Shutdown", &shutdown_err, 1));
+          return;
+        }
+
+        /* There is already a closure!. This indicates a bug in the code */
+        gpr_log(GPR_ERROR,
+                "LockfreeEvent::NotifyOn: notify_on called with a previous "
+                "callback still pending");
+        abort();
+      }
+    }
+  }
+
+  GPR_UNREACHABLE_CODE(return );
+}
+
+bool LockfreeEvent::SetShutdown(grpc_error* shutdown_err) {
+  gpr_atm new_state = (gpr_atm)shutdown_err | kShutdownBit;
+
+  while (true) {
+    gpr_atm curr = gpr_atm_no_barrier_load(&state_);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_DEBUG, "LockfreeEvent::SetShutdown: %p curr=%p err=%s",
+              &state_, (void*)curr, grpc_error_string(shutdown_err));
+    }
+    switch (curr) {
+      case kClosureReady:
+      case kClosureNotReady:
+        /* Need a full barrier here so that the initial load in notify_on
+           doesn't need a barrier */
+        if (gpr_atm_full_cas(&state_, curr, new_state)) {
+          return true; /* early out */
+        }
+        break; /* retry */
+
+      default: {
+        /* 'curr' is either a closure or the fd is already shutdown */
+
+        /* If fd is already shutdown, we are done */
+        if ((curr & kShutdownBit) > 0) {
+          GRPC_ERROR_UNREF(shutdown_err);
+          return false;
+        }
+
+        /* Fd is not shutdown. Schedule the closure and move the state to
+           shutdown state.
+           Needs an acquire to pair with setting the closure (and get a
+           happens-after on that edge), and a release to pair with anything
+           loading the shutdown state. */
+        if (gpr_atm_full_cas(&state_, curr, new_state)) {
+          ExecCtx::Run(DEBUG_LOCATION, (grpc_closure*)curr,
+                       GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                           "FD Shutdown", &shutdown_err, 1));
+          return true;
+        }
+
+        /* 'curr' was a closure but now changed to a different state. We will
+          have to retry */
+        break;
+      }
+    }
+  }
+
+  GPR_UNREACHABLE_CODE(return false);
+}
+
+void LockfreeEvent::SetReady() {
+  while (true) {
+    gpr_atm curr = gpr_atm_no_barrier_load(&state_);
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+      gpr_log(GPR_DEBUG, "LockfreeEvent::SetReady: %p curr=%p", &state_,
+              (void*)curr);
+    }
+
+    switch (curr) {
+      case kClosureReady: {
+        /* Already ready. We are done here */
+        return;
+      }
+
+      case kClosureNotReady: {
+        /* No barrier required as we're transitioning to a state that does not
+           involve a closure */
+        if (gpr_atm_no_barrier_cas(&state_, kClosureNotReady, kClosureReady)) {
+          return; /* early out */
+        }
+        break; /* retry */
+      }
+
+      default: {
+        /* 'curr' is either a closure or the fd is shutdown */
+        if ((curr & kShutdownBit) > 0) {
+          /* The fd is shutdown. Do nothing */
+          return;
+        }
+        /* Full cas: acquire pairs with this cas' release in the event of a
+           spurious set_ready; release pairs with this or the acquire in
+           notify_on (or set_shutdown) */
+        else if (gpr_atm_full_cas(&state_, curr, kClosureNotReady)) {
+          ExecCtx::Run(DEBUG_LOCATION, (grpc_closure*)curr, GRPC_ERROR_NONE);
+          return;
+        }
+        /* else the state changed again (only possible by either a racing
+           set_ready or set_shutdown functions. In both these cases, the closure
+           would have been scheduled for execution. So we are done here */
+        return;
+      }
+    }
+  }
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.h
new file mode 100644
index 0000000..d6a6c22
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/lockfree_event.h	
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H
+#define GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H
+
+/* Lock free event notification for file descriptors */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/iomgr/closure.h"
+
+namespace grpc_core {
+
+class LockfreeEvent {
+ public:
+  LockfreeEvent();
+
+  LockfreeEvent(const LockfreeEvent&) = delete;
+  LockfreeEvent& operator=(const LockfreeEvent&) = delete;
+
+  // These methods are used to initialize and destroy the internal state. These
+  // cannot be done in constructor and destructor because SetReady may be called
+  // when the event is destroyed and put in a freelist.
+  void InitEvent();
+  void DestroyEvent();
+
+  // Returns true if fd has been shutdown, false otherwise.
+  bool IsShutdown() const {
+    return (gpr_atm_no_barrier_load(&state_) & kShutdownBit) != 0;
+  }
+
+  // Schedules \a closure when the event is received (see SetReady()) or the
+  // shutdown state has been set. Note that the event may have already been
+  // received, in which case the closure would be scheduled immediately.
+  // If the shutdown state has already been set, then \a closure is scheduled
+  // with the shutdown error.
+  void NotifyOn(grpc_closure* closure);
+
+  // Sets the shutdown state. If a closure had been provided by NotifyOn and has
+  // not yet been scheduled, it will be scheduled with \a error.
+  bool SetShutdown(grpc_error* error);
+
+  // Signals that the event has been received.
+  void SetReady();
+
+ private:
+  enum State { kClosureNotReady = 0, kClosureReady = 2, kShutdownBit = 1 };
+
+  gpr_atm state_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/nameser.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/nameser.h
new file mode 100644
index 0000000..22a00cd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/nameser.h	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_NAMESER_H
+#define GRPC_CORE_LIB_IOMGR_NAMESER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_HAVE_ARPA_NAMESER
+
+#include <arpa/nameser.h>
+
+#else /* GRPC_HAVE_ARPA_NAMESER */
+
+typedef enum __ns_class {
+  ns_c_invalid = 0, /* Cookie. */
+  ns_c_in = 1,      /* Internet. */
+  ns_c_2 = 2,       /* unallocated/unsupported. */
+  ns_c_chaos = 3,   /* MIT Chaos-net. */
+  ns_c_hs = 4,      /* MIT Hesiod. */
+  /* Query class values which do not appear in resource records */
+  ns_c_none = 254, /* for prereq. sections in update requests */
+  ns_c_any = 255,  /* Wildcard match. */
+  ns_c_max = 65536
+} ns_class;
+
+typedef enum __ns_type {
+  ns_t_invalid = 0,   /* Cookie. */
+  ns_t_a = 1,         /* Host address. */
+  ns_t_ns = 2,        /* Authoritative server. */
+  ns_t_md = 3,        /* Mail destination. */
+  ns_t_mf = 4,        /* Mail forwarder. */
+  ns_t_cname = 5,     /* Canonical name. */
+  ns_t_soa = 6,       /* Start of authority zone. */
+  ns_t_mb = 7,        /* Mailbox domain name. */
+  ns_t_mg = 8,        /* Mail group member. */
+  ns_t_mr = 9,        /* Mail rename name. */
+  ns_t_null = 10,     /* Null resource record. */
+  ns_t_wks = 11,      /* Well known service. */
+  ns_t_ptr = 12,      /* Domain name pointer. */
+  ns_t_hinfo = 13,    /* Host information. */
+  ns_t_minfo = 14,    /* Mailbox information. */
+  ns_t_mx = 15,       /* Mail routing information. */
+  ns_t_txt = 16,      /* Text strings. */
+  ns_t_rp = 17,       /* Responsible person. */
+  ns_t_afsdb = 18,    /* AFS cell database. */
+  ns_t_x25 = 19,      /* X_25 calling address. */
+  ns_t_isdn = 20,     /* ISDN calling address. */
+  ns_t_rt = 21,       /* Router. */
+  ns_t_nsap = 22,     /* NSAP address. */
+  ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
+  ns_t_sig = 24,      /* Security signature. */
+  ns_t_key = 25,      /* Security key. */
+  ns_t_px = 26,       /* X.400 mail mapping. */
+  ns_t_gpos = 27,     /* Geographical position (withdrawn). */
+  ns_t_aaaa = 28,     /* Ip6 Address. */
+  ns_t_loc = 29,      /* Location Information. */
+  ns_t_nxt = 30,      /* Next domain (security). */
+  ns_t_eid = 31,      /* Endpoint identifier. */
+  ns_t_nimloc = 32,   /* Nimrod Locator. */
+  ns_t_srv = 33,      /* Server Selection. */
+  ns_t_atma = 34,     /* ATM Address */
+  ns_t_naptr = 35,    /* Naming Authority PoinTeR */
+  ns_t_kx = 36,       /* Key Exchange */
+  ns_t_cert = 37,     /* Certification record */
+  ns_t_a6 = 38,       /* IPv6 address (deprecates AAAA) */
+  ns_t_dname = 39,    /* Non-terminal DNAME (for IPv6) */
+  ns_t_sink = 40,     /* Kitchen sink (experimentatl) */
+  ns_t_opt = 41,      /* EDNS0 option (meta-RR) */
+  ns_t_apl = 42,      /* Address prefix list (RFC3123) */
+  ns_t_ds = 43,       /* Delegation Signer (RFC4034) */
+  ns_t_sshfp = 44,    /* SSH Key Fingerprint (RFC4255) */
+  ns_t_rrsig = 46,    /* Resource Record Signature (RFC4034) */
+  ns_t_nsec = 47,     /* Next Secure (RFC4034) */
+  ns_t_dnskey = 48,   /* DNS Public Key (RFC4034) */
+  ns_t_tkey = 249,    /* Transaction key */
+  ns_t_tsig = 250,    /* Transaction signature. */
+  ns_t_ixfr = 251,    /* Incremental zone transfer. */
+  ns_t_axfr = 252,    /* Transfer zone of authority. */
+  ns_t_mailb = 253,   /* Transfer mailbox records. */
+  ns_t_maila = 254,   /* Transfer mail agent records. */
+  ns_t_any = 255,     /* Wildcard match. */
+  ns_t_zxfr = 256,    /* BIND-specific, nonstandard. */
+  ns_t_max = 65536
+} ns_type;
+
+#endif /* GRPC_HAVE_ARPA_NAMESER */
+
+#endif /* GRPC_CORE_LIB_IOMGR_NAMESER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.cc
new file mode 100644
index 0000000..e7045df
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.cc	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/poller/eventmanager_libuv.h"
+
+#include <grpc/support/time.h>
+
+grpc::experimental::LibuvEventManager::Options::Options() : num_workers_(-1) {}
+grpc::experimental::LibuvEventManager::Options::Options(int num_workers)
+    : num_workers_(num_workers) {}
+
+grpc::experimental::LibuvEventManager::LibuvEventManager(const Options& options)
+    : options_(options) {
+  int num_workers = options_.num_workers();
+  // Number of workers can't be 0 if we do not accept thread donation.
+  // TODO(guantaol): replaces the hard-coded number with a flag.
+  if (num_workers <= 0) num_workers = 32;
+
+  for (int i = 0; i < num_workers; i++) {
+    workers_.emplace_back(
+        options_.thread_name_prefix().c_str(),
+        [](void* em) { static_cast<LibuvEventManager*>(em)->RunWorkerLoop(); },
+        this);
+    workers_.back().Start();
+  }
+}
+
+grpc::experimental::LibuvEventManager::~LibuvEventManager() {
+  Shutdown();
+  for (auto& th : workers_) {
+    th.Join();
+  }
+}
+
+void grpc::experimental::LibuvEventManager::RunWorkerLoop() {
+  while (true) {
+    // TODO(guantaol): extend the worker loop with real work.
+    if (ShouldStop()) return;
+    gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                                 gpr_time_from_micros(10, GPR_TIMESPAN)));
+  }
+}
+
+bool grpc::experimental::LibuvEventManager::ShouldStop() {
+  return should_stop_.Load(grpc_core::MemoryOrder::ACQUIRE) != 0;
+}
+
+void grpc::experimental::LibuvEventManager::Shutdown() {
+  if (should_stop_.Load(grpc_core::MemoryOrder::ACQUIRE))
+    return;  // Already shut down.
+
+  {
+    grpc_core::MutexLock lock(&shutdown_mu_);
+    while (shutdown_refcount_.Load(grpc_core::MemoryOrder::ACQUIRE) > 0) {
+      shutdown_cv_.Wait(&shutdown_mu_);
+    }
+  }
+  should_stop_.Store(true, grpc_core::MemoryOrder::RELEASE);
+}
+
+void grpc::experimental::LibuvEventManager::ShutdownRef() {
+  shutdown_refcount_.FetchAdd(1, grpc_core::MemoryOrder::RELAXED);
+}
+
+void grpc::experimental::LibuvEventManager::ShutdownUnref() {
+  if (shutdown_refcount_.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    grpc_core::MutexLock lock(&shutdown_mu_);
+    shutdown_cv_.Signal();
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.h
new file mode 100644
index 0000000..3c0e05d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/poller/eventmanager_libuv.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H
+#define GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string>
+#include <vector>
+
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+
+namespace grpc {
+namespace experimental {
+
+class LibuvEventManager {
+ public:
+  class Options {
+   public:
+    Options();
+    Options(int num_workers);
+
+    int num_workers() const { return num_workers_; }
+    void set_num_workers(int num) { num_workers_ = num; }
+
+    const std::string& thread_name_prefix() const {
+      return thread_name_prefix_;
+    }
+    void set_thread_name_prefix(const std::string& name) {
+      thread_name_prefix_ = name;
+    }
+
+   private:
+    // Number of worker threads to create at startup. If less than 0, uses the
+    // default value of 32.
+    int num_workers_;
+    // Name prefix used for worker.
+    std::string thread_name_prefix_;
+  };
+
+  explicit LibuvEventManager(const Options& options);
+  virtual ~LibuvEventManager();
+
+  void Shutdown();
+  void ShutdownRef();
+  void ShutdownUnref();
+
+ private:
+  // Function run by the worker threads.
+  void RunWorkerLoop();
+
+  // Whether the EventManager has been shut down.
+  bool ShouldStop();
+
+  const Options options_;
+  // Whether the EventManager workers should be stopped.
+  grpc_core::Atomic<bool> should_stop_{false};
+  // A refcount preventing the EventManager from shutdown.
+  grpc_core::Atomic<int> shutdown_refcount_{0};
+  // Worker threads of the EventManager.
+  std::vector<grpc_core::Thread> workers_;
+  // Mutex and condition variable used for shutdown.
+  grpc_core::Mutex shutdown_mu_;
+  grpc_core::CondVar shutdown_cv_;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLER_EVENTMANAGER_LIBUV_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.cc
new file mode 100644
index 0000000..dea07ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.cc	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/polling_entity.h"
+
+grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
+    grpc_pollset_set* pollset_set) {
+  grpc_polling_entity pollent;
+  pollent.pollent.pollset_set = pollset_set;
+  pollent.tag = GRPC_POLLS_POLLSET_SET;
+  return pollent;
+}
+
+grpc_polling_entity grpc_polling_entity_create_from_pollset(
+    grpc_pollset* pollset) {
+  grpc_polling_entity pollent;
+  pollent.pollent.pollset = pollset;
+  pollent.tag = GRPC_POLLS_POLLSET;
+  return pollent;
+}
+
+grpc_pollset* grpc_polling_entity_pollset(grpc_polling_entity* pollent) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
+    return pollent->pollent.pollset;
+  }
+  return nullptr;
+}
+
+grpc_pollset_set* grpc_polling_entity_pollset_set(
+    grpc_polling_entity* pollent) {
+  if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
+    return pollent->pollent.pollset_set;
+  }
+  return nullptr;
+}
+
+bool grpc_polling_entity_is_empty(const grpc_polling_entity* pollent) {
+  return pollent->tag == GRPC_POLLS_NONE;
+}
+
+void grpc_polling_entity_add_to_pollset_set(grpc_polling_entity* pollent,
+                                            grpc_pollset_set* pss_dst) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
+    // CFStream does not use file destriptors. When CFStream is used, the fd
+    // pollset is possible to be null.
+    if (pollent->pollent.pollset != nullptr) {
+      grpc_pollset_set_add_pollset(pss_dst, pollent->pollent.pollset);
+    }
+  } else if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
+    GPR_ASSERT(pollent->pollent.pollset_set != nullptr);
+    grpc_pollset_set_add_pollset_set(pss_dst, pollent->pollent.pollset_set);
+  } else {
+    gpr_log(GPR_ERROR, "Invalid grpc_polling_entity tag '%d'", pollent->tag);
+    abort();
+  }
+}
+
+void grpc_polling_entity_del_from_pollset_set(grpc_polling_entity* pollent,
+                                              grpc_pollset_set* pss_dst) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
+#ifdef GRPC_CFSTREAM
+    if (pollent->pollent.pollset != nullptr) {
+      grpc_pollset_set_del_pollset(pss_dst, pollent->pollent.pollset);
+    }
+#else
+    GPR_ASSERT(pollent->pollent.pollset != nullptr);
+    grpc_pollset_set_del_pollset(pss_dst, pollent->pollent.pollset);
+#endif
+  } else if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
+    GPR_ASSERT(pollent->pollent.pollset_set != nullptr);
+    grpc_pollset_set_del_pollset_set(pss_dst, pollent->pollent.pollset_set);
+  } else {
+    gpr_log(GPR_ERROR, "Invalid grpc_polling_entity tag '%d'", pollent->tag);
+    abort();
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.h
new file mode 100644
index 0000000..6f4c5bd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/polling_entity.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
+#define GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+typedef enum grpc_pollset_tag {
+  GRPC_POLLS_NONE,
+  GRPC_POLLS_POLLSET,
+  GRPC_POLLS_POLLSET_SET
+} grpc_pollset_tag;
+
+/* A grpc_polling_entity is a pollset-or-pollset_set container. It allows
+ * functions that accept a pollset XOR a pollset_set to do so through an
+ * abstract interface. No ownership is taken. */
+
+struct grpc_polling_entity {
+  union {
+    grpc_pollset* pollset = nullptr;
+    grpc_pollset_set* pollset_set;
+  } pollent;
+  grpc_pollset_tag tag = GRPC_POLLS_NONE;
+};
+
+grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
+    grpc_pollset_set* pollset_set);
+grpc_polling_entity grpc_polling_entity_create_from_pollset(
+    grpc_pollset* pollset);
+
+/** If \a pollent contains a pollset, return it. Otherwise, return NULL */
+grpc_pollset* grpc_polling_entity_pollset(grpc_polling_entity* pollent);
+
+/** If \a pollent contains a pollset_set, return it. Otherwise, return NULL */
+grpc_pollset_set* grpc_polling_entity_pollset_set(grpc_polling_entity* pollent);
+
+bool grpc_polling_entity_is_empty(const grpc_polling_entity* pollent);
+
+/** Add the pollset or pollset_set in \a pollent to the destination pollset_set
+ * \a * pss_dst */
+void grpc_polling_entity_add_to_pollset_set(grpc_polling_entity* pollent,
+                                            grpc_pollset_set* pss_dst);
+
+/** Delete the pollset or pollset_set in \a pollent from the destination
+ * pollset_set \a * pss_dst */
+void grpc_polling_entity_del_from_pollset_set(grpc_polling_entity* pollent,
+                                              grpc_pollset_set* pss_dst);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.cc
new file mode 100644
index 0000000..ebfef1d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.cc	
@@ -0,0 +1,56 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+
+grpc_pollset_vtable* grpc_pollset_impl;
+
+void grpc_set_pollset_vtable(grpc_pollset_vtable* vtable) {
+  grpc_pollset_impl = vtable;
+}
+
+void grpc_pollset_global_init() { grpc_pollset_impl->global_init(); }
+
+void grpc_pollset_global_shutdown() { grpc_pollset_impl->global_shutdown(); }
+
+void grpc_pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  grpc_pollset_impl->init(pollset, mu);
+}
+
+void grpc_pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  grpc_pollset_impl->shutdown(pollset, closure);
+}
+
+void grpc_pollset_destroy(grpc_pollset* pollset) {
+  grpc_pollset_impl->destroy(pollset);
+}
+
+grpc_error* grpc_pollset_work(grpc_pollset* pollset,
+                              grpc_pollset_worker** worker,
+                              grpc_millis deadline) {
+  return grpc_pollset_impl->work(pollset, worker, deadline);
+}
+
+grpc_error* grpc_pollset_kick(grpc_pollset* pollset,
+                              grpc_pollset_worker* specific_worker) {
+  return grpc_pollset_impl->kick(pollset, specific_worker);
+}
+
+size_t grpc_pollset_size(void) { return grpc_pollset_impl->pollset_size(); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.h
new file mode 100644
index 0000000..28472b3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset.h	
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_fd_refcount;
+
+/* A grpc_pollset is a set of file descriptors that a higher level item is
+   interested in. For example:
+    - a server will typically keep a pollset containing all connected channels,
+      so that it can find new calls to service
+    - a completion queue might keep a pollset with an entry for each transport
+      that is servicing a call that it's tracking */
+
+typedef struct grpc_pollset grpc_pollset;
+typedef struct grpc_pollset_worker grpc_pollset_worker;
+
+typedef struct grpc_pollset_vtable {
+  void (*global_init)(void);
+  void (*global_shutdown)(void);
+  void (*init)(grpc_pollset* pollset, gpr_mu** mu);
+  void (*shutdown)(grpc_pollset* pollset, grpc_closure* closure);
+  void (*destroy)(grpc_pollset* pollset);
+  grpc_error* (*work)(grpc_pollset* pollset, grpc_pollset_worker** worker,
+                      grpc_millis deadline);
+  grpc_error* (*kick)(grpc_pollset* pollset,
+                      grpc_pollset_worker* specific_worker);
+  size_t (*pollset_size)(void);
+} grpc_pollset_vtable;
+
+void grpc_set_pollset_vtable(grpc_pollset_vtable* vtable);
+
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
+size_t grpc_pollset_size(void);
+/* Initialize a pollset: assumes *pollset contains all zeros */
+void grpc_pollset_init(grpc_pollset* pollset, gpr_mu** mu);
+/* Begin shutting down the pollset, and call closure when done.
+ * pollset's mutex must be held */
+void grpc_pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure);
+void grpc_pollset_destroy(grpc_pollset* pollset);
+
+/* Do some work on a pollset.
+   May involve invoking asynchronous callbacks, or actually polling file
+   descriptors.
+   Requires pollset's mutex locked.
+   May unlock its mutex during its execution.
+
+   worker is a (platform-specific) handle that can be used to wake up
+   from grpc_pollset_work before any events are received and before the timeout
+   has expired. It is both initialized and destroyed by grpc_pollset_work.
+   Initialization of worker is guaranteed to occur BEFORE the
+   pollset's mutex is released for the first time by grpc_pollset_work
+   and it is guaranteed that it will not be released by grpc_pollset_work
+   AFTER worker has been destroyed.
+
+   It's legal for worker to be NULL: in that case, this specific thread can not
+   be directly woken with a kick, but maybe be indirectly (with a kick against
+   the pollset as a whole).
+
+   Tries not to block past deadline.
+   May call grpc_closure_list_run on grpc_closure_list, without holding the
+   pollset
+   lock */
+grpc_error* grpc_pollset_work(grpc_pollset* pollset,
+                              grpc_pollset_worker** worker,
+                              grpc_millis deadline) GRPC_MUST_USE_RESULT;
+
+/* Break one polling thread out of polling work for this pollset.
+   If specific_worker is non-NULL, then kick that worker. */
+grpc_error* grpc_pollset_kick(grpc_pollset* pollset,
+                              grpc_pollset_worker* specific_worker)
+    GRPC_MUST_USE_RESULT;
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.cc
new file mode 100644
index 0000000..98c8e64
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.cc	
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <stddef.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_custom.h"
+#include "src/core/lib/iomgr/timer.h"
+
+#include "src/core/lib/debug/trace.h"
+
+static grpc_custom_poller_vtable* poller_vtable;
+
+struct grpc_pollset {
+  gpr_mu mu;
+};
+
+static size_t pollset_size() { return sizeof(grpc_pollset); }
+
+static void pollset_global_init() { poller_vtable->init(); }
+
+static void pollset_global_shutdown() { poller_vtable->shutdown(); }
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  gpr_mu_init(&pollset->mu);
+  *mu = &pollset->mu;
+}
+
+static void pollset_shutdown(grpc_pollset* /*pollset*/, grpc_closure* closure) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+}
+
+static void pollset_destroy(grpc_pollset* pollset) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  gpr_mu_destroy(&pollset->mu);
+}
+
+static grpc_error* pollset_work(grpc_pollset* pollset,
+                                grpc_pollset_worker** /*worker_hdl*/,
+                                grpc_millis deadline) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  gpr_mu_unlock(&pollset->mu);
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+  grpc_millis timeout = 0;
+  if (deadline > now) {
+    timeout = deadline - now;
+  }
+  // We yield here because the poll() call might yield
+  // control back to the application
+  grpc_core::ExecCtx* curr = grpc_core::ExecCtx::Get();
+  grpc_core::ExecCtx::Set(nullptr);
+  poller_vtable->poll(static_cast<size_t>(timeout));
+  grpc_core::ExecCtx::Set(curr);
+  grpc_core::ExecCtx::Get()->InvalidateNow();
+  if (grpc_core::ExecCtx::Get()->HasWork()) {
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+  gpr_mu_lock(&pollset->mu);
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* /*pollset*/,
+                                grpc_pollset_worker* /*specific_worker*/) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  poller_vtable->kick();
+  return GRPC_ERROR_NONE;
+}
+
+grpc_pollset_vtable custom_pollset_vtable = {
+    pollset_global_init, pollset_global_shutdown,
+    pollset_init,        pollset_shutdown,
+    pollset_destroy,     pollset_work,
+    pollset_kick,        pollset_size};
+
+void grpc_custom_pollset_init(grpc_custom_poller_vtable* vtable) {
+  poller_vtable = vtable;
+  grpc_set_pollset_vtable(&custom_pollset_vtable);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.h
new file mode 100644
index 0000000..9e2027f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_custom.h	
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+typedef struct grpc_custom_poller_vtable {
+  void (*init)();
+  void (*poll)(size_t timeout_ms);
+  void (*kick)();
+  void (*shutdown)();
+} grpc_custom_poller_vtable;
+
+void grpc_custom_pollset_init(grpc_custom_poller_vtable* vtable);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.cc
new file mode 100644
index 0000000..42a647a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.cc	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+grpc_pollset_set_vtable* grpc_pollset_set_impl;
+
+void grpc_set_pollset_set_vtable(grpc_pollset_set_vtable* vtable) {
+  grpc_pollset_set_impl = vtable;
+}
+
+grpc_pollset_set* grpc_pollset_set_create() {
+  return grpc_pollset_set_impl->create();
+}
+
+void grpc_pollset_set_destroy(grpc_pollset_set* pollset_set) {
+  grpc_pollset_set_impl->destroy(pollset_set);
+}
+
+void grpc_pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset) {
+  grpc_pollset_set_impl->add_pollset(pollset_set, pollset);
+}
+
+void grpc_pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset) {
+  grpc_pollset_set_impl->del_pollset(pollset_set, pollset);
+}
+
+void grpc_pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item) {
+  grpc_pollset_set_impl->add_pollset_set(bag, item);
+}
+
+void grpc_pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item) {
+  grpc_pollset_set_impl->del_pollset_set(bag, item);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.h
new file mode 100644
index 0000000..d3355b8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+
+/* A grpc_pollset_set is a set of pollsets that are interested in an
+   action. Adding a pollset to a pollset_set automatically adds any
+   fd's (etc) that have been registered with the set_set to that pollset.
+   Registering fd's automatically adds them to all current pollsets. */
+
+typedef struct grpc_pollset_set grpc_pollset_set;
+
+typedef struct grpc_pollset_set_vtable {
+  grpc_pollset_set* (*create)(void);
+  void (*destroy)(grpc_pollset_set* pollset_set);
+  void (*add_pollset)(grpc_pollset_set* pollset_set, grpc_pollset* pollset);
+  void (*del_pollset)(grpc_pollset_set* pollset_set, grpc_pollset* pollset);
+  void (*add_pollset_set)(grpc_pollset_set* bag, grpc_pollset_set* item);
+  void (*del_pollset_set)(grpc_pollset_set* bag, grpc_pollset_set* item);
+} grpc_pollset_set_vtable;
+
+void grpc_set_pollset_set_vtable(grpc_pollset_set_vtable* vtable);
+
+grpc_pollset_set* grpc_pollset_set_create(void);
+void grpc_pollset_set_destroy(grpc_pollset_set* pollset_set);
+void grpc_pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+void grpc_pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                  grpc_pollset* pollset);
+void grpc_pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+void grpc_pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                      grpc_pollset_set* item);
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.cc
new file mode 100644
index 0000000..099388f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.cc	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+grpc_pollset_set* pollset_set_create(void) {
+  return (grpc_pollset_set*)((intptr_t)0xdeafbeef);
+}
+
+void pollset_set_destroy(grpc_pollset_set* /*pollset_set*/) {}
+
+void pollset_set_add_pollset(grpc_pollset_set* /*pollset_set*/,
+                             grpc_pollset* /*pollset*/) {}
+
+void pollset_set_del_pollset(grpc_pollset_set* /*pollset_set*/,
+                             grpc_pollset* /*pollset*/) {}
+
+void pollset_set_add_pollset_set(grpc_pollset_set* /*bag*/,
+                                 grpc_pollset_set* /*item*/) {}
+
+void pollset_set_del_pollset_set(grpc_pollset_set* /*bag*/,
+                                 grpc_pollset_set* /*item*/) {}
+
+static grpc_pollset_set_vtable vtable = {
+    pollset_set_create,          pollset_set_destroy,
+    pollset_set_add_pollset,     pollset_set_del_pollset,
+    pollset_set_add_pollset_set, pollset_set_del_pollset_set};
+
+void grpc_custom_pollset_set_init() { grpc_set_pollset_set_vtable(&vtable); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.h
new file mode 100644
index 0000000..80e19a1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_custom.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+void grpc_custom_pollset_set_init();
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.cc
new file mode 100644
index 0000000..bb9e7f5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.cc	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/pollset_set_windows.h"
+
+static grpc_pollset_set* pollset_set_create(void) {
+  return (grpc_pollset_set*)((intptr_t)0xdeafbeef);
+}
+
+static void pollset_set_destroy(grpc_pollset_set* pollset_set) {}
+
+static void pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {}
+
+static void pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                                    grpc_pollset* pollset) {}
+
+static void pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {}
+
+static void pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                        grpc_pollset_set* item) {}
+
+grpc_pollset_set_vtable grpc_windows_pollset_set_vtable = {
+    pollset_set_create,          pollset_set_destroy,
+    pollset_set_add_pollset,     pollset_set_del_pollset,
+    pollset_set_add_pollset_set, pollset_set_del_pollset_set};
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.h
new file mode 100644
index 0000000..5ac9d18
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_set_windows.h	
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_uv.cc
new file mode 100644
index 0000000..bade6ea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_uv.cc	
@@ -0,0 +1,93 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/lib/iomgr/pollset_custom.h"
+
+#include <uv.h>
+
+/* Indicates that grpc_pollset_work should run an iteration of the UV loop
+   before running callbacks. This defaults to 1, and should be disabled if
+   grpc_pollset_work will be called within the callstack of uv_run */
+int grpc_pollset_work_run_loop = 1;
+
+static bool g_kicked = false;
+
+typedef struct uv_poller_handle {
+  uv_timer_t poll_timer;
+  uv_timer_t kick_timer;
+  int refs;
+} uv_poller_handle;
+
+static uv_poller_handle* g_handle;
+
+static void init() {
+  g_handle = (uv_poller_handle*)gpr_malloc(sizeof(uv_poller_handle));
+  g_handle->refs = 2;
+  uv_timer_init(uv_default_loop(), &g_handle->poll_timer);
+  uv_timer_init(uv_default_loop(), &g_handle->kick_timer);
+}
+
+static void empty_timer_cb(uv_timer_t* handle) {}
+
+static void kick_timer_cb(uv_timer_t* handle) { g_kicked = false; }
+
+static void run_loop(size_t timeout) {
+  if (grpc_pollset_work_run_loop) {
+    if (timeout == 0) {
+      uv_run(uv_default_loop(), UV_RUN_NOWAIT);
+    } else {
+      uv_timer_start(&g_handle->poll_timer, empty_timer_cb, timeout, 0);
+      uv_run(uv_default_loop(), UV_RUN_ONCE);
+      uv_timer_stop(&g_handle->poll_timer);
+    }
+  }
+}
+
+static void kick() {
+  if (!g_kicked) {
+    g_kicked = true;
+    uv_timer_start(&g_handle->kick_timer, kick_timer_cb, 0, 0);
+  }
+}
+
+static void close_timer_cb(uv_handle_t* handle) {
+  g_handle->refs--;
+  if (g_handle->refs == 0) {
+    gpr_free(g_handle);
+  }
+}
+
+static void shutdown() {
+  uv_close((uv_handle_t*)&g_handle->poll_timer, close_timer_cb);
+  uv_close((uv_handle_t*)&g_handle->kick_timer, close_timer_cb);
+  if (grpc_pollset_work_run_loop) {
+    GPR_ASSERT(uv_run(uv_default_loop(), UV_RUN_DEFAULT) == 0);
+  }
+}
+
+grpc_custom_poller_vtable uv_pollset_vtable = {init, run_loop, kick, shutdown};
+
+#endif /* GRPC_UV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.cc
new file mode 100644
index 0000000..184c330
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.cc	
@@ -0,0 +1,243 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+
+#define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker*)1)
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_fd_refcount(false, "fd_refcount");
+
+gpr_mu grpc_polling_mu;
+static grpc_pollset_worker* g_active_poller;
+static grpc_pollset_worker g_global_root_worker;
+
+static void pollset_global_init(void) {
+  gpr_mu_init(&grpc_polling_mu);
+  g_active_poller = NULL;
+  g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+      g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev =
+          &g_global_root_worker;
+}
+
+static void pollset_global_shutdown(void) { gpr_mu_destroy(&grpc_polling_mu); }
+
+static void remove_worker(grpc_pollset_worker* worker,
+                          grpc_pollset_worker_link_type type) {
+  worker->links[type].prev->links[type].next = worker->links[type].next;
+  worker->links[type].next->links[type].prev = worker->links[type].prev;
+  worker->links[type].next = worker->links[type].prev = worker;
+}
+
+static int has_workers(grpc_pollset_worker* root,
+                       grpc_pollset_worker_link_type type) {
+  return root->links[type].next != root;
+}
+
+static grpc_pollset_worker* pop_front_worker(
+    grpc_pollset_worker* root, grpc_pollset_worker_link_type type) {
+  if (has_workers(root, type)) {
+    grpc_pollset_worker* w = root->links[type].next;
+    remove_worker(w, type);
+    return w;
+  } else {
+    return NULL;
+  }
+}
+
+static void push_front_worker(grpc_pollset_worker* root,
+                              grpc_pollset_worker_link_type type,
+                              grpc_pollset_worker* worker) {
+  worker->links[type].prev = root;
+  worker->links[type].next = worker->links[type].prev->links[type].next;
+  worker->links[type].prev->links[type].next =
+      worker->links[type].next->links[type].prev = worker;
+}
+
+static size_t pollset_size(void) { return sizeof(grpc_pollset); }
+
+/* There isn't really any such thing as a pollset under Windows, due to the
+   nature of the IO completion ports. We're still going to provide a minimal
+   set of features for the sake of the rest of grpc. But grpc_pollset_work
+   won't actually do any polling, and return as quickly as possible. */
+
+static void pollset_init(grpc_pollset* pollset, gpr_mu** mu) {
+  *mu = &grpc_polling_mu;
+  pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+      pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+          &pollset->root_worker;
+}
+
+static void pollset_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  pollset->shutting_down = 1;
+  grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+  if (!pollset->is_iocp_worker) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+  } else {
+    pollset->on_shutdown = closure;
+  }
+}
+
+static void pollset_destroy(grpc_pollset* pollset) {}
+
+static grpc_error* pollset_work(grpc_pollset* pollset,
+                                grpc_pollset_worker** worker_hdl,
+                                grpc_millis deadline) {
+  grpc_pollset_worker worker;
+  if (worker_hdl) *worker_hdl = &worker;
+
+  int added_worker = 0;
+  worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+      worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+          worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+              worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev = NULL;
+  worker.kicked = 0;
+  worker.pollset = pollset;
+  gpr_cv_init(&worker.cv);
+  if (!pollset->kicked_without_pollers && !pollset->shutting_down) {
+    if (g_active_poller == NULL) {
+      grpc_pollset_worker* next_worker;
+      /* become poller */
+      pollset->is_iocp_worker = 1;
+      g_active_poller = &worker;
+      gpr_mu_unlock(&grpc_polling_mu);
+      grpc_iocp_work(deadline);
+      grpc_core::ExecCtx::Get()->Flush();
+      gpr_mu_lock(&grpc_polling_mu);
+      pollset->is_iocp_worker = 0;
+      g_active_poller = NULL;
+      /* try to get a worker from this pollsets worker list */
+      next_worker = pop_front_worker(&pollset->root_worker,
+                                     GRPC_POLLSET_WORKER_LINK_POLLSET);
+      if (next_worker == NULL) {
+        /* try to get a worker from the global list */
+        next_worker = pop_front_worker(&g_global_root_worker,
+                                       GRPC_POLLSET_WORKER_LINK_GLOBAL);
+      }
+      if (next_worker != NULL) {
+        next_worker->kicked = 1;
+        gpr_cv_signal(&next_worker->cv);
+      }
+
+      if (pollset->shutting_down && pollset->on_shutdown != NULL) {
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION, pollset->on_shutdown,
+                                GRPC_ERROR_NONE);
+        pollset->on_shutdown = NULL;
+      }
+      goto done;
+    }
+    push_front_worker(&g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL,
+                      &worker);
+    push_front_worker(&pollset->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET,
+                      &worker);
+    added_worker = 1;
+    while (!worker.kicked) {
+      if (gpr_cv_wait(&worker.cv, &grpc_polling_mu,
+                      grpc_millis_to_timespec(deadline, GPR_CLOCK_REALTIME))) {
+        grpc_core::ExecCtx::Get()->InvalidateNow();
+        break;
+      }
+      grpc_core::ExecCtx::Get()->InvalidateNow();
+    }
+  } else {
+    pollset->kicked_without_pollers = 0;
+  }
+done:
+  if (!grpc_closure_list_empty(*grpc_core::ExecCtx::Get()->closure_list())) {
+    gpr_mu_unlock(&grpc_polling_mu);
+    grpc_core::ExecCtx::Get()->Flush();
+    gpr_mu_lock(&grpc_polling_mu);
+  }
+  if (added_worker) {
+    remove_worker(&worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
+    remove_worker(&worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
+  }
+  gpr_cv_destroy(&worker.cv);
+  if (worker_hdl) *worker_hdl = NULL;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* pollset_kick(grpc_pollset* p,
+                                grpc_pollset_worker* specific_worker) {
+  bool should_kick_global = false;
+  if (specific_worker != NULL) {
+    if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
+      should_kick_global = true;
+      for (specific_worker =
+               p->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next;
+           specific_worker != &p->root_worker;
+           specific_worker =
+               specific_worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next) {
+        specific_worker->kicked = 1;
+        should_kick_global = false;
+        gpr_cv_signal(&specific_worker->cv);
+      }
+      p->kicked_without_pollers = 1;
+      if (p->is_iocp_worker) {
+        grpc_iocp_kick();
+        should_kick_global = false;
+      }
+    } else {
+      if (p->is_iocp_worker && g_active_poller == specific_worker) {
+        grpc_iocp_kick();
+      } else {
+        specific_worker->kicked = 1;
+        gpr_cv_signal(&specific_worker->cv);
+      }
+    }
+  } else {
+    specific_worker =
+        pop_front_worker(&p->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
+    if (specific_worker != NULL) {
+      grpc_pollset_kick(p, specific_worker);
+    } else if (p->is_iocp_worker) {
+      grpc_iocp_kick();
+    } else {
+      p->kicked_without_pollers = 1;
+      should_kick_global = true;
+    }
+  }
+  if (should_kick_global && g_active_poller == NULL) {
+    grpc_pollset_worker* next_global_worker = pop_front_worker(
+        &g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
+    if (next_global_worker != NULL) {
+      next_global_worker->kicked = 1;
+      gpr_cv_signal(&next_global_worker->cv);
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_pollset_vtable grpc_windows_pollset_vtable = {
+    pollset_global_init, pollset_global_shutdown,
+    pollset_init,        pollset_shutdown,
+    pollset_destroy,     pollset_work,
+    pollset_kick,        pollset_size};
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.h
new file mode 100644
index 0000000..e89758c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/pollset_windows.h	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include "src/core/lib/iomgr/socket_windows.h"
+
+/* There isn't really any such thing as a pollset under Windows, due to the
+   nature of the IO completion ports. A Windows "pollset" is merely a mutex
+   used to synchronize with the IOCP, and workers are condition variables
+   used to block threads until work is ready. */
+
+typedef enum {
+  GRPC_POLLSET_WORKER_LINK_POLLSET = 0,
+  GRPC_POLLSET_WORKER_LINK_GLOBAL,
+  GRPC_POLLSET_WORKER_LINK_TYPES
+} grpc_pollset_worker_link_type;
+
+typedef struct grpc_pollset_worker_link {
+  struct grpc_pollset_worker* next;
+  struct grpc_pollset_worker* prev;
+} grpc_pollset_worker_link;
+
+struct grpc_pollset;
+typedef struct grpc_pollset grpc_pollset;
+
+typedef struct grpc_pollset_worker {
+  gpr_cv cv;
+  int kicked;
+  struct grpc_pollset* pollset;
+  grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES];
+} grpc_pollset_worker;
+
+struct grpc_pollset {
+  int shutting_down;
+  int kicked_without_pollers;
+  int is_iocp_worker;
+  grpc_pollset_worker root_worker;
+  grpc_closure* on_shutdown;
+};
+
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/port.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/port.h
new file mode 100644
index 0000000..1d2e950
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/port.h	
@@ -0,0 +1,243 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifndef GRPC_CORE_LIB_IOMGR_PORT_H
+#define GRPC_CORE_LIB_IOMGR_PORT_H
+
+#ifdef GRPC_UV
+#ifndef GRPC_CUSTOM_SOCKET
+#define GRPC_CUSTOM_SOCKET
+#endif
+#endif
+/* This needs to be separate from the other conditions because it needs to
+ * apply to custom sockets too */
+#ifdef GPR_WINDOWS
+#define GRPC_ARES_RESOLVE_LOCALHOST_MANUALLY 1
+#endif
+#if defined(GRPC_CUSTOM_SOCKET)
+// Do Nothing
+#elif defined(GPR_MANYLINUX1)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#define GRPC_LINUX_EPOLL 1
+#elif defined(GPR_WINDOWS)
+#define GRPC_WINSOCK_SOCKET 1
+#define GRPC_WINDOWS_SOCKETUTILS 1
+#define GRPC_WINDOWS_SOCKET_ARES_EV_DRIVER 1
+#elif defined(GPR_ANDROID)
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_LINUX_EVENTFD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_LINUX)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+#define GRPC_HAVE_MSG_NOSIGNAL 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+/* Linux has TCP_INQ support since 4.18, but it is safe to set
+   the socket option on older kernels. */
+#define GRPC_HAVE_TCP_INQ 1
+#ifdef LINUX_VERSION_CODE
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)
+#define GRPC_LINUX_ERRQUEUE 1
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0) */
+#endif /* LINUX_VERSION_CODE */
+#define GRPC_LINUX_MULTIPOLL_WITH_EPOLL 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_HOST_NAME_MAX 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#ifdef __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 4)
+#define GRPC_LINUX_EPOLL 1
+#endif
+#if __GLIBC_PREREQ(2, 9)
+#define GRPC_LINUX_EPOLL_CREATE1 1
+#define GRPC_LINUX_EVENTFD 1
+#endif
+#if __GLIBC_PREREQ(2, 10)
+#define GRPC_LINUX_SOCKETUTILS 1
+#endif
+#endif
+#ifdef LINUX_VERSION_CODE
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)
+#define GRPC_HAVE_TCP_USER_TIMEOUT
+#ifdef __GLIBC_PREREQ
+#if !(__GLIBC_PREREQ(2, 17))
+/*
+ * TCP_USER_TIMEOUT wasn't imported to glibc until 2.17. Use Linux system
+ * header instead.
+ */
+#define GRPC_LINUX_TCP_H 1
+#endif /* __GLIBC_PREREQ(2, 17) */
+#endif /* ifdef __GLIBC_PREREQ */
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37) */
+#endif /* LINUX_VERSION_CODE */
+#ifndef __GLIBC__
+#define GRPC_LINUX_EPOLL 1
+#define GRPC_LINUX_EPOLL_CREATE1 1
+#define GRPC_LINUX_EVENTFD 1
+#define GRPC_MSG_IOVLEN_TYPE int
+#endif
+#ifndef GRPC_LINUX_EVENTFD
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#endif
+#ifndef GRPC_LINUX_SOCKETUTILS
+#define GRPC_POSIX_SOCKETUTILS
+#endif
+#elif defined(GPR_APPLE)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_SO_NOSIGPIPE 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_MSG_IOVLEN_TYPE int
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#ifdef GRPC_CFSTREAM
+#define GRPC_CFSTREAM_IOMGR 1
+#define GRPC_CFSTREAM_CLIENT 1
+#define GRPC_CFSTREAM_ENDPOINT 1
+#define GRPC_POSIX_SOCKET_ARES_EV_DRIVER 1
+#define GRPC_POSIX_SOCKET_EV 1
+#define GRPC_POSIX_SOCKET_EV_EPOLL1 1
+#define GRPC_POSIX_SOCKET_EV_EPOLLEX 1
+#define GRPC_POSIX_SOCKET_EV_POLL 1
+#define GRPC_POSIX_SOCKET_IF_NAMETOINDEX 1
+#define GRPC_POSIX_SOCKET_RESOLVE_ADDRESS 1
+#define GRPC_POSIX_SOCKET_SOCKADDR 1
+#define GRPC_POSIX_SOCKET_SOCKET_FACTORY 1
+#define GRPC_POSIX_SOCKET_TCP 1
+#define GRPC_POSIX_SOCKET_TCP_CLIENT 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON 1
+#define GRPC_POSIX_SOCKET_UDP_SERVER 1
+#define GRPC_POSIX_SOCKET_UTILS_COMMON 1
+#else
+#define GRPC_POSIX_SOCKET 1
+#endif
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_SYSCONF 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_FREEBSD)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_SO_NOSIGPIPE 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_FORK 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_OPENBSD)
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_SOLARIS)
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_AIX)
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_NACL)
+#define GRPC_HAVE_ARPA_NAMESER 1
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_POSIX_WAKEUP_FD 1
+#elif defined(GPR_FUCHSIA)
+#define GRPC_HAVE_IFADDRS 1
+#define GRPC_HAVE_IPV6_RECVPKTINFO 1
+#define GRPC_HAVE_IP_PKTINFO 1
+// Zircon does not support the MSG_NOSIGNAL flag since it doesn't support
+// signals.
+#undef GRPC_HAVE_MSG_NOSIGNAL
+#define GRPC_HAVE_UNIX_SOCKET 1
+#define GRPC_POSIX_WAKEUP_FD 1
+// TODO(rudominer) Check that this does something we want.
+#define GRPC_POSIX_NO_SPECIAL_WAKEUP_FD 1
+#define GRPC_POSIX_SOCKET 1
+#define GRPC_POSIX_SOCKETADDR 1
+// TODO(rudominer) Check this does something we want.
+#define GRPC_POSIX_SOCKETUTILS 1
+#define GRPC_TIMER_USE_GENERIC 1
+#elif !defined(GPR_NO_AUTODETECT_PLATFORM)
+#error "Platform not recognized"
+#endif
+
+#if defined(GRPC_POSIX_SOCKET) + defined(GRPC_WINSOCK_SOCKET) + \
+        defined(GRPC_CUSTOM_SOCKET) + defined(GRPC_CFSTREAM) != \
+    1
+#error \
+    "Must define exactly one of GRPC_POSIX_SOCKET, GRPC_WINSOCK_SOCKET, GRPC_CUSTOM_SOCKET"
+#endif
+
+#ifdef GRPC_POSIX_SOCKET
+#define GRPC_POSIX_SOCKET_ARES_EV_DRIVER 1
+#define GRPC_POSIX_SOCKET_EV 1
+#define GRPC_POSIX_SOCKET_EV_EPOLLEX 1
+#define GRPC_POSIX_SOCKET_EV_POLL 1
+#define GRPC_POSIX_SOCKET_EV_EPOLL1 1
+#define GRPC_POSIX_SOCKET_IF_NAMETOINDEX 1
+#define GRPC_POSIX_SOCKET_IOMGR 1
+#define GRPC_POSIX_SOCKET_RESOLVE_ADDRESS 1
+#define GRPC_POSIX_SOCKET_SOCKADDR 1
+#define GRPC_POSIX_SOCKET_SOCKET_FACTORY 1
+#define GRPC_POSIX_SOCKET_TCP 1
+#define GRPC_POSIX_SOCKET_TCP_CLIENT 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER 1
+#define GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON 1
+#define GRPC_POSIX_SOCKET_UDP_SERVER 1
+#define GRPC_POSIX_SOCKET_UTILS_COMMON 1
+#endif
+
+#if defined(GRPC_POSIX_HOST_NAME_MAX) && defined(GRPC_POSIX_SYSCONF)
+#error "Cannot define both GRPC_POSIX_HOST_NAME_MAX and GRPC_POSIX_SYSCONF"
+#endif
+#if !defined(GRPC_POSIX_HOST_NAME_MAX) && !defined(GRPC_POSIX_SYSCONF)
+#define GRPC_GETHOSTNAME_FALLBACK 1
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_PORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.cc
new file mode 100644
index 0000000..f2a4676
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.cc	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+#include "src/core/lib/iomgr/resolve_address.h"
+
+grpc_address_resolver_vtable* grpc_resolve_address_impl;
+
+void grpc_set_resolver_impl(grpc_address_resolver_vtable* vtable) {
+  grpc_resolve_address_impl = vtable;
+}
+
+void grpc_resolve_address(const char* addr, const char* default_port,
+                          grpc_pollset_set* interested_parties,
+                          grpc_closure* on_done,
+                          grpc_resolved_addresses** addresses) {
+  grpc_resolve_address_impl->resolve_address(
+      addr, default_port, interested_parties, on_done, addresses);
+}
+
+void grpc_resolved_addresses_destroy(grpc_resolved_addresses* addrs) {
+  if (addrs != nullptr) {
+    gpr_free(addrs->addrs);
+  }
+  gpr_free(addrs);
+}
+
+grpc_error* grpc_blocking_resolve_address(const char* name,
+                                          const char* default_port,
+                                          grpc_resolved_addresses** addresses) {
+  return grpc_resolve_address_impl->blocking_resolve_address(name, default_port,
+                                                             addresses);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.h
new file mode 100644
index 0000000..7016ffc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address.h	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
+#define GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+#include <uv.h>
+#endif
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include <ws2tcpip.h>
+#endif
+
+#if defined(GRPC_POSIX_SOCKET) || defined(GRPC_CFSTREAM)
+#include <sys/socket.h>
+#endif
+
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#define GRPC_MAX_SOCKADDR_SIZE 128
+
+typedef struct {
+  char addr[GRPC_MAX_SOCKADDR_SIZE];
+  socklen_t len;
+} grpc_resolved_address;
+
+typedef struct {
+  size_t naddrs;
+  grpc_resolved_address* addrs;
+} grpc_resolved_addresses;
+
+typedef struct grpc_address_resolver_vtable {
+  void (*resolve_address)(const char* addr, const char* default_port,
+                          grpc_pollset_set* interested_parties,
+                          grpc_closure* on_done,
+                          grpc_resolved_addresses** addresses);
+  grpc_error* (*blocking_resolve_address)(const char* name,
+                                          const char* default_port,
+                                          grpc_resolved_addresses** addresses);
+} grpc_address_resolver_vtable;
+
+void grpc_set_resolver_impl(grpc_address_resolver_vtable* vtable);
+
+/* Asynchronously resolve addr. Use default_port if a port isn't designated
+   in addr, otherwise use the port in addr. */
+/* TODO(apolcyn): add a timeout here */
+void grpc_resolve_address(const char* addr, const char* default_port,
+                          grpc_pollset_set* interested_parties,
+                          grpc_closure* on_done,
+                          grpc_resolved_addresses** addresses);
+
+/* Destroy resolved addresses */
+void grpc_resolved_addresses_destroy(grpc_resolved_addresses* addresses);
+
+/* Resolve addr in a blocking fashion. On success,
+   result must be freed with grpc_resolved_addresses_destroy. */
+grpc_error* grpc_blocking_resolve_address(const char* name,
+                                          const char* default_port,
+                                          grpc_resolved_addresses** addresses);
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.cc
new file mode 100644
index 0000000..1d5230d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.cc	
@@ -0,0 +1,183 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/host_port.h"
+
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/resolve_address_custom.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+#include <string.h>
+
+typedef struct grpc_custom_resolver {
+  grpc_closure* on_done;
+  grpc_resolved_addresses** addresses;
+  char* host;
+  char* port;
+} grpc_custom_resolver;
+
+static grpc_custom_resolver_vtable* resolve_address_vtable = nullptr;
+
+static int retry_named_port_failure(grpc_custom_resolver* r,
+                                    grpc_resolved_addresses** res) {
+  // This loop is copied from resolve_address_posix.c
+  const char* svc[][2] = {{"http", "80"}, {"https", "443"}};
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(svc); i++) {
+    if (strcmp(r->port, svc[i][0]) == 0) {
+      gpr_free(r->port);
+      r->port = gpr_strdup(svc[i][1]);
+      if (res) {
+        grpc_error* error =
+            resolve_address_vtable->resolve(r->host, r->port, res);
+        if (error != GRPC_ERROR_NONE) {
+          GRPC_ERROR_UNREF(error);
+          return 0;
+        }
+      } else {
+        resolve_address_vtable->resolve_async(r, r->host, r->port);
+      }
+      return 1;
+    }
+  }
+  return 0;
+}
+
+void grpc_custom_resolve_callback(grpc_custom_resolver* r,
+                                  grpc_resolved_addresses* result,
+                                  grpc_error* error) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  if (error == GRPC_ERROR_NONE) {
+    *r->addresses = result;
+  } else if (retry_named_port_failure(r, nullptr)) {
+    return;
+  }
+  if (r->on_done) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_done, error);
+  }
+  gpr_free(r->host);
+  gpr_free(r->port);
+  gpr_free(r);
+}
+
+static grpc_error* try_split_host_port(const char* name,
+                                       const char* default_port,
+                                       grpc_core::UniquePtr<char>* host,
+                                       grpc_core::UniquePtr<char>* port) {
+  /* parse name, splitting it into host and port parts */
+  grpc_error* error;
+  grpc_core::SplitHostPort(name, host, port);
+  if (*host == nullptr) {
+    char* msg;
+    gpr_asprintf(&msg, "unparseable host:port: '%s'", name);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return error;
+  }
+  if (*port == nullptr) {
+    // TODO(murgatroid99): add tests for this case
+    if (default_port == nullptr) {
+      char* msg;
+      gpr_asprintf(&msg, "no port in name '%s'", name);
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      return error;
+    }
+    port->reset(gpr_strdup(default_port));
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* blocking_resolve_address_impl(
+    const char* name, const char* default_port,
+    grpc_resolved_addresses** addresses) {
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  grpc_error* err;
+
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+
+  err = try_split_host_port(name, default_port, &host, &port);
+  if (err != GRPC_ERROR_NONE) {
+    return err;
+  }
+
+  /* Call getaddrinfo */
+  grpc_custom_resolver resolver;
+  resolver.host = host.get();
+  resolver.port = port.get();
+
+  grpc_resolved_addresses* addrs;
+  grpc_core::ExecCtx* curr = grpc_core::ExecCtx::Get();
+  grpc_core::ExecCtx::Set(nullptr);
+  err = resolve_address_vtable->resolve(host.get(), port.get(), &addrs);
+  if (err != GRPC_ERROR_NONE) {
+    if (retry_named_port_failure(&resolver, &addrs)) {
+      GRPC_ERROR_UNREF(err);
+      err = GRPC_ERROR_NONE;
+    }
+  }
+  grpc_core::ExecCtx::Set(curr);
+  if (err == GRPC_ERROR_NONE) {
+    *addresses = addrs;
+  }
+  return err;
+}
+
+static void resolve_address_impl(const char* name, const char* default_port,
+                                 grpc_pollset_set* /*interested_parties*/,
+                                 grpc_closure* on_done,
+                                 grpc_resolved_addresses** addrs) {
+  grpc_custom_resolver* r = nullptr;
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  grpc_error* err;
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  err = try_split_host_port(name, default_port, &host, &port);
+  if (err != GRPC_ERROR_NONE) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_done, err);
+    return;
+  }
+  r = (grpc_custom_resolver*)gpr_malloc(sizeof(grpc_custom_resolver));
+  r->on_done = on_done;
+  r->addresses = addrs;
+  r->host = host.release();
+  r->port = port.release();
+
+  /* Call getaddrinfo */
+  resolve_address_vtable->resolve_async(r, r->host, r->port);
+}
+
+static grpc_address_resolver_vtable custom_resolver_vtable = {
+    resolve_address_impl, blocking_resolve_address_impl};
+
+void grpc_custom_resolver_init(grpc_custom_resolver_vtable* impl) {
+  resolve_address_vtable = impl;
+  grpc_set_resolver_impl(&custom_resolver_vtable);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.h
new file mode 100644
index 0000000..e0c6714
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_custom.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+
+typedef struct grpc_custom_resolver grpc_custom_resolver;
+
+typedef struct grpc_custom_resolver_vtable {
+  grpc_error* (*resolve)(char* host, char* port, grpc_resolved_addresses** res);
+  void (*resolve_async)(grpc_custom_resolver* resolver, char* host, char* port);
+} grpc_custom_resolver_vtable;
+
+void grpc_custom_resolve_callback(grpc_custom_resolver* resolver,
+                                  grpc_resolved_addresses* result,
+                                  grpc_error* error);
+
+/* Internal APIs */
+void grpc_custom_resolver_init(grpc_custom_resolver_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_posix.cc
new file mode 100644
index 0000000..1d2a79f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_posix.cc	
@@ -0,0 +1,179 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#ifdef GRPC_POSIX_SOCKET_RESOLVE_ADDRESS
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#include <string.h>
+#include <sys/types.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+static grpc_error* posix_blocking_resolve_address(
+    const char* name, const char* default_port,
+    grpc_resolved_addresses** addresses) {
+  grpc_core::ExecCtx exec_ctx;
+  struct addrinfo hints;
+  struct addrinfo *result = nullptr, *resp;
+  int s;
+  size_t i;
+  grpc_error* err;
+
+  if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' &&
+      name[4] == ':' && name[5] != 0) {
+    return grpc_resolve_unix_domain_address(name + 5, addresses);
+  }
+
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  /* parse name, splitting it into host and port parts */
+  grpc_core::SplitHostPort(name, &host, &port);
+  if (host == nullptr) {
+    err = grpc_error_set_str(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("unparseable host:port"),
+        GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+    goto done;
+  }
+  if (port == nullptr) {
+    if (default_port == nullptr) {
+      err = grpc_error_set_str(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("no port in name"),
+          GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+      goto done;
+    }
+    port.reset(gpr_strdup(default_port));
+  }
+
+  /* Call getaddrinfo */
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_UNSPEC;     /* ipv4 or ipv6 */
+  hints.ai_socktype = SOCK_STREAM; /* stream socket */
+  hints.ai_flags = AI_PASSIVE;     /* for wildcard IP address */
+
+  GRPC_SCHEDULING_START_BLOCKING_REGION;
+  s = getaddrinfo(host.get(), port.get(), &hints, &result);
+  GRPC_SCHEDULING_END_BLOCKING_REGION;
+
+  if (s != 0) {
+    /* Retry if well-known service name is recognized */
+    const char* svc[][2] = {{"http", "80"}, {"https", "443"}};
+    for (i = 0; i < GPR_ARRAY_SIZE(svc); i++) {
+      if (strcmp(port.get(), svc[i][0]) == 0) {
+        GRPC_SCHEDULING_START_BLOCKING_REGION;
+        s = getaddrinfo(host.get(), svc[i][1], &hints, &result);
+        GRPC_SCHEDULING_END_BLOCKING_REGION;
+        break;
+      }
+    }
+  }
+
+  if (s != 0) {
+    err = grpc_error_set_str(
+        grpc_error_set_str(
+            grpc_error_set_str(
+                grpc_error_set_int(
+                    GRPC_ERROR_CREATE_FROM_STATIC_STRING(gai_strerror(s)),
+                    GRPC_ERROR_INT_ERRNO, s),
+                GRPC_ERROR_STR_OS_ERROR,
+                grpc_slice_from_static_string(gai_strerror(s))),
+            GRPC_ERROR_STR_SYSCALL,
+            grpc_slice_from_static_string("getaddrinfo")),
+        GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+    goto done;
+  }
+
+  /* Success path: set addrs non-NULL, fill it in */
+  *addresses = static_cast<grpc_resolved_addresses*>(
+      gpr_malloc(sizeof(grpc_resolved_addresses)));
+  (*addresses)->naddrs = 0;
+  for (resp = result; resp != nullptr; resp = resp->ai_next) {
+    (*addresses)->naddrs++;
+  }
+  (*addresses)->addrs = static_cast<grpc_resolved_address*>(
+      gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs));
+  i = 0;
+  for (resp = result; resp != nullptr; resp = resp->ai_next) {
+    memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
+    (*addresses)->addrs[i].len = resp->ai_addrlen;
+    i++;
+  }
+  err = GRPC_ERROR_NONE;
+
+done:
+  if (result) {
+    freeaddrinfo(result);
+  }
+  return err;
+}
+
+typedef struct {
+  char* name;
+  char* default_port;
+  grpc_closure* on_done;
+  grpc_resolved_addresses** addrs_out;
+  grpc_closure request_closure;
+  void* arg;
+} request;
+
+/* Callback to be passed to grpc Executor to asynch-ify
+ * grpc_blocking_resolve_address */
+static void do_request_thread(void* rp, grpc_error* /*error*/) {
+  request* r = static_cast<request*>(rp);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION, r->on_done,
+      grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out));
+  gpr_free(r->name);
+  gpr_free(r->default_port);
+  gpr_free(r);
+}
+
+static void posix_resolve_address(const char* name, const char* default_port,
+                                  grpc_pollset_set* /*interested_parties*/,
+                                  grpc_closure* on_done,
+                                  grpc_resolved_addresses** addrs) {
+  request* r = static_cast<request*>(gpr_malloc(sizeof(request)));
+  GRPC_CLOSURE_INIT(&r->request_closure, do_request_thread, r, nullptr);
+  r->name = gpr_strdup(name);
+  r->default_port = gpr_strdup(default_port);
+  r->on_done = on_done;
+  r->addrs_out = addrs;
+  grpc_core::Executor::Run(&r->request_closure, GRPC_ERROR_NONE,
+                           grpc_core::ExecutorType::RESOLVER);
+}
+
+grpc_address_resolver_vtable grpc_posix_resolver_vtable = {
+    posix_resolve_address, posix_blocking_resolve_address};
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_windows.cc
new file mode 100644
index 0000000..5a9d442
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resolve_address_windows.cc	
@@ -0,0 +1,163 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#include <inttypes.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/block_annotate.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+typedef struct {
+  char* name;
+  char* default_port;
+  grpc_closure request_closure;
+  grpc_closure* on_done;
+  grpc_resolved_addresses** addresses;
+} request;
+
+static grpc_error* windows_blocking_resolve_address(
+    const char* name, const char* default_port,
+    grpc_resolved_addresses** addresses) {
+  grpc_core::ExecCtx exec_ctx;
+  struct addrinfo hints;
+  struct addrinfo *result = NULL, *resp;
+  int s;
+  size_t i;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  /* parse name, splitting it into host and port parts */
+  grpc_core::UniquePtr<char> host;
+  grpc_core::UniquePtr<char> port;
+  grpc_core::SplitHostPort(name, &host, &port);
+  if (host == NULL) {
+    char* msg;
+    gpr_asprintf(&msg, "unparseable host:port: '%s'", name);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    goto done;
+  }
+  if (port == NULL) {
+    if (default_port == NULL) {
+      char* msg;
+      gpr_asprintf(&msg, "no port in name '%s'", name);
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+      gpr_free(msg);
+      goto done;
+    }
+    port.reset(gpr_strdup(default_port));
+  }
+
+  /* Call getaddrinfo */
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_UNSPEC;     /* ipv4 or ipv6 */
+  hints.ai_socktype = SOCK_STREAM; /* stream socket */
+  hints.ai_flags = AI_PASSIVE;     /* for wildcard IP address */
+
+  GRPC_SCHEDULING_START_BLOCKING_REGION;
+  s = getaddrinfo(host.get(), port.get(), &hints, &result);
+  GRPC_SCHEDULING_END_BLOCKING_REGION;
+  if (s != 0) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "getaddrinfo");
+    goto done;
+  }
+
+  /* Success path: set addrs non-NULL, fill it in */
+  (*addresses) =
+      (grpc_resolved_addresses*)gpr_malloc(sizeof(grpc_resolved_addresses));
+  (*addresses)->naddrs = 0;
+  for (resp = result; resp != NULL; resp = resp->ai_next) {
+    (*addresses)->naddrs++;
+  }
+  (*addresses)->addrs = (grpc_resolved_address*)gpr_malloc(
+      sizeof(grpc_resolved_address) * (*addresses)->naddrs);
+  i = 0;
+  for (resp = result; resp != NULL; resp = resp->ai_next) {
+    memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
+    (*addresses)->addrs[i].len = resp->ai_addrlen;
+    i++;
+  }
+
+  {
+    for (i = 0; i < (*addresses)->naddrs; i++) {
+      char* buf;
+      grpc_sockaddr_to_string(&buf, &(*addresses)->addrs[i], 0);
+      gpr_free(buf);
+    }
+  }
+
+done:
+  if (result) {
+    freeaddrinfo(result);
+  }
+  return error;
+}
+
+/* Callback to be passed to grpc_executor to asynch-ify
+ * grpc_blocking_resolve_address */
+static void do_request_thread(void* rp, grpc_error* error) {
+  request* r = (request*)rp;
+  if (error == GRPC_ERROR_NONE) {
+    error =
+        grpc_blocking_resolve_address(r->name, r->default_port, r->addresses);
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_done, error);
+  gpr_free(r->name);
+  gpr_free(r->default_port);
+  gpr_free(r);
+}
+
+static void windows_resolve_address(const char* name, const char* default_port,
+                                    grpc_pollset_set* interested_parties,
+                                    grpc_closure* on_done,
+                                    grpc_resolved_addresses** addresses) {
+  request* r = (request*)gpr_malloc(sizeof(request));
+  GRPC_CLOSURE_INIT(&r->request_closure, do_request_thread, r, nullptr);
+  r->name = gpr_strdup(name);
+  r->default_port = gpr_strdup(default_port);
+  r->on_done = on_done;
+  r->addresses = addresses;
+  grpc_core::Executor::Run(&r->request_closure, GRPC_ERROR_NONE,
+                           grpc_core::ExecutorType::RESOLVER);
+}
+
+grpc_address_resolver_vtable grpc_windows_resolver_vtable = {
+    windows_resolve_address, windows_blocking_resolve_address};
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.cc
new file mode 100644
index 0000000..0fc0279
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.cc	
@@ -0,0 +1,1015 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/resource_quota.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+grpc_core::TraceFlag grpc_resource_quota_trace(false, "resource_quota");
+
+#define MEMORY_USAGE_ESTIMATION_MAX 65536
+
+/* Internal linked list pointers for a resource user */
+typedef struct {
+  grpc_resource_user* next;
+  grpc_resource_user* prev;
+} grpc_resource_user_link;
+
+/* Resource users are kept in (potentially) several intrusive linked lists
+   at once. These are the list names. */
+typedef enum {
+  /* Resource users that are waiting for an allocation */
+  GRPC_RULIST_AWAITING_ALLOCATION,
+  /* Resource users that have free memory available for internal reclamation */
+  GRPC_RULIST_NON_EMPTY_FREE_POOL,
+  /* Resource users that have published a benign reclamation is available */
+  GRPC_RULIST_RECLAIMER_BENIGN,
+  /* Resource users that have published a destructive reclamation is
+     available */
+  GRPC_RULIST_RECLAIMER_DESTRUCTIVE,
+  /* Number of lists: must be last */
+  GRPC_RULIST_COUNT
+} grpc_rulist;
+
+struct grpc_resource_user {
+  /* The quota this resource user consumes from */
+  grpc_resource_quota* resource_quota;
+
+  /* Closure to schedule an allocation under the resource quota combiner lock */
+  grpc_closure allocate_closure;
+  /* Closure to publish a non empty free pool under the resource quota combiner
+     lock */
+  grpc_closure add_to_free_pool_closure;
+
+  /* one ref for each ref call (released by grpc_resource_user_unref), and one
+     ref for each byte allocated (released by grpc_resource_user_free) */
+  gpr_atm refs;
+  /* is this resource user unlocked? starts at 0, increases for each shutdown
+     call */
+  gpr_atm shutdown;
+
+  gpr_mu mu;
+  /* The amount of memory (in bytes) this user has cached for its own use: to
+     avoid quota contention, each resource user can keep some memory in
+     addition to what it is immediately using (e.g., for caching), and the quota
+     can pull it back under memory pressure.
+     This value can become negative if more memory has been requested than
+     existed in the free pool, at which point the quota is consulted to bring
+     this value non-negative (asynchronously). */
+  int64_t free_pool;
+  /* A list of closures to call once free_pool becomes non-negative - ie when
+     all outstanding allocations have been granted. */
+  grpc_closure_list on_allocated;
+  /* True if we are currently trying to allocate from the quota, false if not */
+  bool allocating;
+  /* The amount of memory (in bytes) that has been requested from this user
+   * asynchronously but hasn't been granted yet. */
+  int64_t outstanding_allocations;
+  /* True if we are currently trying to add ourselves to the non-free quota
+     list, false otherwise */
+  bool added_to_free_pool;
+
+  /* The number of threads currently allocated to this resource user */
+  gpr_atm num_threads_allocated;
+
+  /* Reclaimers: index 0 is the benign reclaimer, 1 is the destructive reclaimer
+   */
+  grpc_closure* reclaimers[2];
+  /* Reclaimers just posted: once we're in the combiner lock, we'll move them
+     to the array above */
+  grpc_closure* new_reclaimers[2];
+  /* Trampoline closures to finish reclamation and re-enter the quota combiner
+     lock */
+  grpc_closure post_reclaimer_closure[2];
+
+  /* Closure to execute under the quota combiner to de-register and shutdown the
+     resource user */
+  grpc_closure destroy_closure;
+
+  /* Links in the various grpc_rulist lists */
+  grpc_resource_user_link links[GRPC_RULIST_COUNT];
+
+  /* The name of this resource user, for debugging/tracing */
+  char* name;
+};
+
+struct grpc_resource_quota {
+  /* refcount */
+  gpr_refcount refs;
+
+  /* estimate of current memory usage
+     scaled to the range [0..RESOURCE_USAGE_ESTIMATION_MAX] */
+  gpr_atm memory_usage_estimation;
+
+  /* Master combiner lock: all activity on a quota executes under this combiner
+   * (so no mutex is needed for this data structure) */
+  grpc_core::Combiner* combiner;
+  /* Size of the resource quota */
+  int64_t size;
+  /* Amount of free memory in the resource quota */
+  int64_t free_pool;
+  /* Used size of memory in the resource quota. Updated as soon as the resource
+   * users start to allocate or free the memory. */
+  gpr_atm used;
+
+  gpr_atm last_size;
+
+  /* Mutex to protect max_threads and num_threads_allocated */
+  /* Note: We could have used gpr_atm for max_threads and num_threads_allocated
+   * and avoid having this mutex; but in that case, each invocation of the
+   * function grpc_resource_user_allocate_threads() would have had to do at
+   * least two atomic loads (for max_threads and num_threads_allocated) followed
+   * by a CAS (on num_threads_allocated).
+   * Moreover, we expect grpc_resource_user_allocate_threads() to be often
+   * called concurrently thereby increasing the chances of failing the CAS
+   * operation. This additional complexity is not worth the tiny perf gain we
+   * may (or may not) have by using atomics */
+  gpr_mu thread_count_mu;
+
+  /* Max number of threads allowed */
+  int max_threads;
+
+  /* Number of threads currently allocated via this resource_quota object */
+  int num_threads_allocated;
+
+  /* Has rq_step been scheduled to occur? */
+  bool step_scheduled;
+
+  /* Are we currently reclaiming memory */
+  bool reclaiming;
+
+  /* Closure around rq_step */
+  grpc_closure rq_step_closure;
+
+  /* Closure around rq_reclamation_done */
+  grpc_closure rq_reclamation_done_closure;
+
+  /* This is only really usable for debugging: it's always a stale pointer, but
+     a stale pointer that might just be fresh enough to guide us to where the
+     reclamation system is stuck */
+  grpc_closure* debug_only_last_initiated_reclaimer;
+  grpc_resource_user* debug_only_last_reclaimer_resource_user;
+
+  /* Roots of all resource user lists */
+  grpc_resource_user* roots[GRPC_RULIST_COUNT];
+
+  char* name;
+};
+
+static void ru_unref_by(grpc_resource_user* resource_user, gpr_atm amount);
+
+/*******************************************************************************
+ * list management
+ */
+
+static void rulist_add_head(grpc_resource_user* resource_user,
+                            grpc_rulist list) {
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  grpc_resource_user** root = &resource_quota->roots[list];
+  if (*root == nullptr) {
+    *root = resource_user;
+    resource_user->links[list].next = resource_user->links[list].prev =
+        resource_user;
+  } else {
+    resource_user->links[list].next = *root;
+    resource_user->links[list].prev = (*root)->links[list].prev;
+    resource_user->links[list].next->links[list].prev =
+        resource_user->links[list].prev->links[list].next = resource_user;
+    *root = resource_user;
+  }
+}
+
+static void rulist_add_tail(grpc_resource_user* resource_user,
+                            grpc_rulist list) {
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  grpc_resource_user** root = &resource_quota->roots[list];
+  if (*root == nullptr) {
+    *root = resource_user;
+    resource_user->links[list].next = resource_user->links[list].prev =
+        resource_user;
+  } else {
+    resource_user->links[list].next = (*root)->links[list].next;
+    resource_user->links[list].prev = *root;
+    resource_user->links[list].next->links[list].prev =
+        resource_user->links[list].prev->links[list].next = resource_user;
+  }
+}
+
+static bool rulist_empty(grpc_resource_quota* resource_quota,
+                         grpc_rulist list) {
+  return resource_quota->roots[list] == nullptr;
+}
+
+static grpc_resource_user* rulist_pop_head(grpc_resource_quota* resource_quota,
+                                           grpc_rulist list) {
+  grpc_resource_user** root = &resource_quota->roots[list];
+  grpc_resource_user* resource_user = *root;
+  if (resource_user == nullptr) {
+    return nullptr;
+  }
+  if (resource_user->links[list].next == resource_user) {
+    *root = nullptr;
+  } else {
+    resource_user->links[list].next->links[list].prev =
+        resource_user->links[list].prev;
+    resource_user->links[list].prev->links[list].next =
+        resource_user->links[list].next;
+    *root = resource_user->links[list].next;
+  }
+  resource_user->links[list].next = resource_user->links[list].prev = nullptr;
+  return resource_user;
+}
+
+static void rulist_remove(grpc_resource_user* resource_user, grpc_rulist list) {
+  if (resource_user->links[list].next == nullptr) return;
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  if (resource_quota->roots[list] == resource_user) {
+    resource_quota->roots[list] = resource_user->links[list].next;
+    if (resource_quota->roots[list] == resource_user) {
+      resource_quota->roots[list] = nullptr;
+    }
+  }
+  resource_user->links[list].next->links[list].prev =
+      resource_user->links[list].prev;
+  resource_user->links[list].prev->links[list].next =
+      resource_user->links[list].next;
+  resource_user->links[list].next = resource_user->links[list].prev = nullptr;
+}
+
+/*******************************************************************************
+ * resource quota state machine
+ */
+
+static bool rq_alloc(grpc_resource_quota* resource_quota);
+static bool rq_reclaim_from_per_user_free_pool(
+    grpc_resource_quota* resource_quota);
+static bool rq_reclaim(grpc_resource_quota* resource_quota, bool destructive);
+
+static void rq_step(void* rq, grpc_error* /*error*/) {
+  grpc_resource_quota* resource_quota = static_cast<grpc_resource_quota*>(rq);
+  resource_quota->step_scheduled = false;
+  do {
+    if (rq_alloc(resource_quota)) goto done;
+  } while (rq_reclaim_from_per_user_free_pool(resource_quota));
+
+  if (!rq_reclaim(resource_quota, false)) {
+    rq_reclaim(resource_quota, true);
+  }
+
+done:
+  grpc_resource_quota_unref_internal(resource_quota);
+}
+
+static void rq_step_sched(grpc_resource_quota* resource_quota) {
+  if (resource_quota->step_scheduled) return;
+  resource_quota->step_scheduled = true;
+  grpc_resource_quota_ref_internal(resource_quota);
+  resource_quota->combiner->FinallyRun(&resource_quota->rq_step_closure,
+                                       GRPC_ERROR_NONE);
+}
+
+/* update the atomically available resource estimate - use no barriers since
+   timeliness of delivery really doesn't matter much */
+static void rq_update_estimate(grpc_resource_quota* resource_quota) {
+  gpr_atm memory_usage_estimation = MEMORY_USAGE_ESTIMATION_MAX;
+  if (resource_quota->size != 0) {
+    memory_usage_estimation =
+        GPR_CLAMP((gpr_atm)((1.0 - ((double)resource_quota->free_pool) /
+                                       ((double)resource_quota->size)) *
+                            MEMORY_USAGE_ESTIMATION_MAX),
+                  0, MEMORY_USAGE_ESTIMATION_MAX);
+  }
+  gpr_atm_no_barrier_store(&resource_quota->memory_usage_estimation,
+                           memory_usage_estimation);
+}
+
+/* returns true if all allocations are completed */
+static bool rq_alloc(grpc_resource_quota* resource_quota) {
+  grpc_resource_user* resource_user;
+  while ((resource_user = rulist_pop_head(resource_quota,
+                                          GRPC_RULIST_AWAITING_ALLOCATION))) {
+    gpr_mu_lock(&resource_user->mu);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+      gpr_log(GPR_INFO,
+              "RQ: check allocation for user %p shutdown=%" PRIdPTR
+              " free_pool=%" PRId64,
+              resource_user, gpr_atm_no_barrier_load(&resource_user->shutdown),
+              resource_user->free_pool);
+    }
+    if (gpr_atm_no_barrier_load(&resource_user->shutdown)) {
+      resource_user->allocating = false;
+      grpc_closure_list_fail_all(
+          &resource_user->on_allocated,
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource user shutdown"));
+      int64_t aborted_allocations = resource_user->outstanding_allocations;
+      resource_user->outstanding_allocations = 0;
+      resource_user->free_pool += aborted_allocations;
+      grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &resource_user->on_allocated);
+      gpr_mu_unlock(&resource_user->mu);
+      ru_unref_by(resource_user, static_cast<gpr_atm>(aborted_allocations));
+      continue;
+    }
+    if (resource_user->free_pool < 0 &&
+        -resource_user->free_pool <= resource_quota->free_pool) {
+      int64_t amt = -resource_user->free_pool;
+      resource_user->free_pool = 0;
+      resource_quota->free_pool -= amt;
+      rq_update_estimate(resource_quota);
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+        gpr_log(GPR_INFO,
+                "RQ %s %s: grant alloc %" PRId64
+                " bytes; rq_free_pool -> %" PRId64,
+                resource_quota->name, resource_user->name, amt,
+                resource_quota->free_pool);
+      }
+    } else if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace) &&
+               resource_user->free_pool >= 0) {
+      gpr_log(GPR_INFO, "RQ %s %s: discard already satisfied alloc request",
+              resource_quota->name, resource_user->name);
+    }
+    if (resource_user->free_pool >= 0) {
+      resource_user->allocating = false;
+      resource_user->outstanding_allocations = 0;
+      grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &resource_user->on_allocated);
+      gpr_mu_unlock(&resource_user->mu);
+    } else {
+      rulist_add_head(resource_user, GRPC_RULIST_AWAITING_ALLOCATION);
+      gpr_mu_unlock(&resource_user->mu);
+      return false;
+    }
+  }
+  return true;
+}
+
+/* returns true if any memory could be reclaimed from buffers */
+static bool rq_reclaim_from_per_user_free_pool(
+    grpc_resource_quota* resource_quota) {
+  grpc_resource_user* resource_user;
+  while ((resource_user = rulist_pop_head(resource_quota,
+                                          GRPC_RULIST_NON_EMPTY_FREE_POOL))) {
+    gpr_mu_lock(&resource_user->mu);
+    resource_user->added_to_free_pool = false;
+    if (resource_user->free_pool > 0) {
+      int64_t amt = resource_user->free_pool;
+      resource_user->free_pool = 0;
+      resource_quota->free_pool += amt;
+      rq_update_estimate(resource_quota);
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+        gpr_log(GPR_INFO,
+                "RQ %s %s: reclaim_from_per_user_free_pool %" PRId64
+                " bytes; rq_free_pool -> %" PRId64,
+                resource_quota->name, resource_user->name, amt,
+                resource_quota->free_pool);
+      }
+      gpr_mu_unlock(&resource_user->mu);
+      return true;
+    } else {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+        gpr_log(GPR_INFO,
+                "RQ %s %s: failed to reclaim_from_per_user_free_pool; "
+                "free_pool = %" PRId64 "; rq_free_pool = %" PRId64,
+                resource_quota->name, resource_user->name,
+                resource_user->free_pool, resource_quota->free_pool);
+      }
+      gpr_mu_unlock(&resource_user->mu);
+    }
+  }
+  return false;
+}
+
+/* returns true if reclamation is proceeding */
+static bool rq_reclaim(grpc_resource_quota* resource_quota, bool destructive) {
+  if (resource_quota->reclaiming) return true;
+  grpc_rulist list = destructive ? GRPC_RULIST_RECLAIMER_DESTRUCTIVE
+                                 : GRPC_RULIST_RECLAIMER_BENIGN;
+  grpc_resource_user* resource_user = rulist_pop_head(resource_quota, list);
+  if (resource_user == nullptr) return false;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO, "RQ %s %s: initiate %s reclamation", resource_quota->name,
+            resource_user->name, destructive ? "destructive" : "benign");
+  }
+  resource_quota->reclaiming = true;
+  grpc_resource_quota_ref_internal(resource_quota);
+  grpc_closure* c = resource_user->reclaimers[destructive];
+  GPR_ASSERT(c);
+  resource_quota->debug_only_last_reclaimer_resource_user = resource_user;
+  resource_quota->debug_only_last_initiated_reclaimer = c;
+  resource_user->reclaimers[destructive] = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, c, GRPC_ERROR_NONE);
+  return true;
+}
+
+/*******************************************************************************
+ * ru_slice: a slice implementation that is backed by a grpc_resource_user
+ */
+
+namespace grpc_core {
+
+class RuSliceRefcount {
+ public:
+  static void Destroy(void* p) {
+    auto* rc = static_cast<RuSliceRefcount*>(p);
+    rc->~RuSliceRefcount();
+    gpr_free(rc);
+  }
+  RuSliceRefcount(grpc_resource_user* resource_user, size_t size)
+      : base_(grpc_slice_refcount::Type::REGULAR, &refs_, Destroy, this,
+              &base_),
+        resource_user_(resource_user),
+        size_(size) {
+    // Nothing to do here.
+  }
+  ~RuSliceRefcount() { grpc_resource_user_free(resource_user_, size_); }
+
+  grpc_slice_refcount* base_refcount() { return &base_; }
+
+ private:
+  grpc_slice_refcount base_;
+  RefCount refs_;
+  grpc_resource_user* resource_user_;
+  size_t size_;
+};
+
+}  // namespace grpc_core
+
+static grpc_slice ru_slice_create(grpc_resource_user* resource_user,
+                                  size_t size) {
+  auto* rc = static_cast<grpc_core::RuSliceRefcount*>(
+      gpr_malloc(sizeof(grpc_core::RuSliceRefcount) + size));
+  new (rc) grpc_core::RuSliceRefcount(resource_user, size);
+  grpc_slice slice;
+
+  slice.refcount = rc->base_refcount();
+  slice.data.refcounted.bytes = reinterpret_cast<uint8_t*>(rc + 1);
+  slice.data.refcounted.length = size;
+  return slice;
+}
+
+/*******************************************************************************
+ * grpc_resource_quota internal implementation: resource user manipulation under
+ * the combiner
+ */
+
+static void ru_allocate(void* ru, grpc_error* /*error*/) {
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  if (rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_AWAITING_ALLOCATION)) {
+    rq_step_sched(resource_user->resource_quota);
+  }
+  rulist_add_tail(resource_user, GRPC_RULIST_AWAITING_ALLOCATION);
+}
+
+static void ru_add_to_free_pool(void* ru, grpc_error* /*error*/) {
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  if (!rulist_empty(resource_user->resource_quota,
+                    GRPC_RULIST_AWAITING_ALLOCATION) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_NON_EMPTY_FREE_POOL)) {
+    rq_step_sched(resource_user->resource_quota);
+  }
+  rulist_add_tail(resource_user, GRPC_RULIST_NON_EMPTY_FREE_POOL);
+}
+
+static bool ru_post_reclaimer(grpc_resource_user* resource_user,
+                              bool destructive) {
+  grpc_closure* closure = resource_user->new_reclaimers[destructive];
+  GPR_ASSERT(closure != nullptr);
+  resource_user->new_reclaimers[destructive] = nullptr;
+  GPR_ASSERT(resource_user->reclaimers[destructive] == nullptr);
+  if (gpr_atm_acq_load(&resource_user->shutdown) > 0) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_CANCELLED);
+    return false;
+  }
+  resource_user->reclaimers[destructive] = closure;
+  return true;
+}
+
+static void ru_post_benign_reclaimer(void* ru, grpc_error* /*error*/) {
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  if (!ru_post_reclaimer(resource_user, false)) return;
+  if (!rulist_empty(resource_user->resource_quota,
+                    GRPC_RULIST_AWAITING_ALLOCATION) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_NON_EMPTY_FREE_POOL) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_RECLAIMER_BENIGN)) {
+    rq_step_sched(resource_user->resource_quota);
+  }
+  rulist_add_tail(resource_user, GRPC_RULIST_RECLAIMER_BENIGN);
+}
+
+static void ru_post_destructive_reclaimer(void* ru, grpc_error* /*error*/) {
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  if (!ru_post_reclaimer(resource_user, true)) return;
+  if (!rulist_empty(resource_user->resource_quota,
+                    GRPC_RULIST_AWAITING_ALLOCATION) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_NON_EMPTY_FREE_POOL) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_RECLAIMER_BENIGN) &&
+      rulist_empty(resource_user->resource_quota,
+                   GRPC_RULIST_RECLAIMER_DESTRUCTIVE)) {
+    rq_step_sched(resource_user->resource_quota);
+  }
+  rulist_add_tail(resource_user, GRPC_RULIST_RECLAIMER_DESTRUCTIVE);
+}
+
+static void ru_shutdown(void* ru, grpc_error* /*error*/) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO, "RU shutdown %p", ru);
+  }
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  gpr_mu_lock(&resource_user->mu);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, resource_user->reclaimers[0],
+                          GRPC_ERROR_CANCELLED);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, resource_user->reclaimers[1],
+                          GRPC_ERROR_CANCELLED);
+  resource_user->reclaimers[0] = nullptr;
+  resource_user->reclaimers[1] = nullptr;
+  rulist_remove(resource_user, GRPC_RULIST_RECLAIMER_BENIGN);
+  rulist_remove(resource_user, GRPC_RULIST_RECLAIMER_DESTRUCTIVE);
+  if (resource_user->allocating) {
+    rq_step_sched(resource_user->resource_quota);
+  }
+  gpr_mu_unlock(&resource_user->mu);
+}
+
+static void ru_destroy(void* ru, grpc_error* /*error*/) {
+  grpc_resource_user* resource_user = static_cast<grpc_resource_user*>(ru);
+  GPR_ASSERT(gpr_atm_no_barrier_load(&resource_user->refs) == 0);
+  // Free all the remaining thread quota
+  grpc_resource_user_free_threads(resource_user,
+                                  static_cast<int>(gpr_atm_no_barrier_load(
+                                      &resource_user->num_threads_allocated)));
+
+  for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
+    rulist_remove(resource_user, static_cast<grpc_rulist>(i));
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, resource_user->reclaimers[0],
+                          GRPC_ERROR_CANCELLED);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, resource_user->reclaimers[1],
+                          GRPC_ERROR_CANCELLED);
+  if (resource_user->free_pool != 0) {
+    resource_user->resource_quota->free_pool += resource_user->free_pool;
+    rq_step_sched(resource_user->resource_quota);
+  }
+  grpc_resource_quota_unref_internal(resource_user->resource_quota);
+  gpr_mu_destroy(&resource_user->mu);
+  gpr_free(resource_user->name);
+  gpr_free(resource_user);
+}
+
+static void ru_alloc_slices(
+    grpc_resource_user_slice_allocator* slice_allocator) {
+  for (size_t i = 0; i < slice_allocator->count; i++) {
+    grpc_slice_buffer_add_indexed(
+        slice_allocator->dest, ru_slice_create(slice_allocator->resource_user,
+                                               slice_allocator->length));
+  }
+}
+
+static void ru_allocated_slices(void* arg, grpc_error* error) {
+  grpc_resource_user_slice_allocator* slice_allocator =
+      static_cast<grpc_resource_user_slice_allocator*>(arg);
+  if (error == GRPC_ERROR_NONE) ru_alloc_slices(slice_allocator);
+  grpc_core::Closure::Run(DEBUG_LOCATION, &slice_allocator->on_done,
+                          GRPC_ERROR_REF(error));
+}
+
+/*******************************************************************************
+ * grpc_resource_quota internal implementation: quota manipulation under the
+ * combiner
+ */
+
+typedef struct {
+  int64_t size;
+  grpc_resource_quota* resource_quota;
+  grpc_closure closure;
+} rq_resize_args;
+
+static void rq_resize(void* args, grpc_error* /*error*/) {
+  rq_resize_args* a = static_cast<rq_resize_args*>(args);
+  int64_t delta = a->size - a->resource_quota->size;
+  a->resource_quota->size += delta;
+  a->resource_quota->free_pool += delta;
+  rq_update_estimate(a->resource_quota);
+  rq_step_sched(a->resource_quota);
+  grpc_resource_quota_unref_internal(a->resource_quota);
+  gpr_free(a);
+}
+
+static void rq_reclamation_done(void* rq, grpc_error* /*error*/) {
+  grpc_resource_quota* resource_quota = static_cast<grpc_resource_quota*>(rq);
+  resource_quota->reclaiming = false;
+  rq_step_sched(resource_quota);
+  grpc_resource_quota_unref_internal(resource_quota);
+}
+
+/*******************************************************************************
+ * grpc_resource_quota api
+ */
+
+/* Public API */
+grpc_resource_quota* grpc_resource_quota_create(const char* name) {
+  grpc_resource_quota* resource_quota =
+      static_cast<grpc_resource_quota*>(gpr_malloc(sizeof(*resource_quota)));
+  gpr_ref_init(&resource_quota->refs, 1);
+  resource_quota->combiner = grpc_combiner_create();
+  resource_quota->free_pool = INT64_MAX;
+  resource_quota->size = INT64_MAX;
+  resource_quota->used = 0;
+  gpr_atm_no_barrier_store(&resource_quota->last_size, GPR_ATM_MAX);
+  gpr_mu_init(&resource_quota->thread_count_mu);
+  resource_quota->max_threads = INT_MAX;
+  resource_quota->num_threads_allocated = 0;
+  resource_quota->step_scheduled = false;
+  resource_quota->reclaiming = false;
+  gpr_atm_no_barrier_store(&resource_quota->memory_usage_estimation, 0);
+  if (name != nullptr) {
+    resource_quota->name = gpr_strdup(name);
+  } else {
+    gpr_asprintf(&resource_quota->name, "anonymous_pool_%" PRIxPTR,
+                 (intptr_t)resource_quota);
+  }
+  GRPC_CLOSURE_INIT(&resource_quota->rq_step_closure, rq_step, resource_quota,
+                    nullptr);
+  GRPC_CLOSURE_INIT(&resource_quota->rq_reclamation_done_closure,
+                    rq_reclamation_done, resource_quota, nullptr);
+  for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
+    resource_quota->roots[i] = nullptr;
+  }
+  return resource_quota;
+}
+
+void grpc_resource_quota_unref_internal(grpc_resource_quota* resource_quota) {
+  if (gpr_unref(&resource_quota->refs)) {
+    // No outstanding thread quota
+    GPR_ASSERT(resource_quota->num_threads_allocated == 0);
+    GRPC_COMBINER_UNREF(resource_quota->combiner, "resource_quota");
+    gpr_free(resource_quota->name);
+    gpr_mu_destroy(&resource_quota->thread_count_mu);
+    gpr_free(resource_quota);
+  }
+}
+
+/* Public API */
+void grpc_resource_quota_unref(grpc_resource_quota* resource_quota) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_resource_quota_unref_internal(resource_quota);
+}
+
+grpc_resource_quota* grpc_resource_quota_ref_internal(
+    grpc_resource_quota* resource_quota) {
+  gpr_ref(&resource_quota->refs);
+  return resource_quota;
+}
+
+/* Public API */
+void grpc_resource_quota_ref(grpc_resource_quota* resource_quota) {
+  grpc_resource_quota_ref_internal(resource_quota);
+}
+
+double grpc_resource_quota_get_memory_pressure(
+    grpc_resource_quota* resource_quota) {
+  return (static_cast<double>(gpr_atm_no_barrier_load(
+             &resource_quota->memory_usage_estimation))) /
+         (static_cast<double>(MEMORY_USAGE_ESTIMATION_MAX));
+}
+
+/* Public API */
+void grpc_resource_quota_set_max_threads(grpc_resource_quota* resource_quota,
+                                         int new_max_threads) {
+  GPR_ASSERT(new_max_threads >= 0);
+  gpr_mu_lock(&resource_quota->thread_count_mu);
+  resource_quota->max_threads = new_max_threads;
+  gpr_mu_unlock(&resource_quota->thread_count_mu);
+}
+
+/* Public API */
+void grpc_resource_quota_resize(grpc_resource_quota* resource_quota,
+                                size_t size) {
+  grpc_core::ExecCtx exec_ctx;
+  rq_resize_args* a = static_cast<rq_resize_args*>(gpr_malloc(sizeof(*a)));
+  a->resource_quota = grpc_resource_quota_ref_internal(resource_quota);
+  a->size = static_cast<int64_t>(size);
+  gpr_atm_no_barrier_store(&resource_quota->last_size,
+                           (gpr_atm)GPR_MIN((size_t)GPR_ATM_MAX, size));
+  GRPC_CLOSURE_INIT(&a->closure, rq_resize, a, grpc_schedule_on_exec_ctx);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, &a->closure, GRPC_ERROR_NONE);
+}
+
+size_t grpc_resource_quota_peek_size(grpc_resource_quota* resource_quota) {
+  return static_cast<size_t>(
+      gpr_atm_no_barrier_load(&resource_quota->last_size));
+}
+
+/*******************************************************************************
+ * grpc_resource_user channel args api
+ */
+
+grpc_resource_quota* grpc_resource_quota_from_channel_args(
+    const grpc_channel_args* channel_args, bool create) {
+  for (size_t i = 0; i < channel_args->num_args; i++) {
+    if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
+      if (channel_args->args[i].type == GRPC_ARG_POINTER) {
+        return grpc_resource_quota_ref_internal(
+            static_cast<grpc_resource_quota*>(
+                channel_args->args[i].value.pointer.p));
+      } else {
+        gpr_log(GPR_DEBUG, GRPC_ARG_RESOURCE_QUOTA " should be a pointer");
+      }
+    }
+  }
+  return create ? grpc_resource_quota_create(nullptr) : nullptr;
+}
+
+static void* rq_copy(void* rq) {
+  grpc_resource_quota_ref(static_cast<grpc_resource_quota*>(rq));
+  return rq;
+}
+
+static void rq_destroy(void* rq) {
+  grpc_resource_quota_unref_internal(static_cast<grpc_resource_quota*>(rq));
+}
+
+static int rq_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+const grpc_arg_pointer_vtable* grpc_resource_quota_arg_vtable(void) {
+  static const grpc_arg_pointer_vtable vtable = {rq_copy, rq_destroy, rq_cmp};
+  return &vtable;
+}
+
+/*******************************************************************************
+ * grpc_resource_user api
+ */
+
+grpc_resource_user* grpc_resource_user_create(
+    grpc_resource_quota* resource_quota, const char* name) {
+  grpc_resource_user* resource_user =
+      static_cast<grpc_resource_user*>(gpr_malloc(sizeof(*resource_user)));
+  resource_user->resource_quota =
+      grpc_resource_quota_ref_internal(resource_quota);
+  GRPC_CLOSURE_INIT(&resource_user->allocate_closure, &ru_allocate,
+                    resource_user, nullptr);
+  GRPC_CLOSURE_INIT(&resource_user->add_to_free_pool_closure,
+                    &ru_add_to_free_pool, resource_user, nullptr);
+  GRPC_CLOSURE_INIT(&resource_user->post_reclaimer_closure[0],
+                    &ru_post_benign_reclaimer, resource_user, nullptr);
+  GRPC_CLOSURE_INIT(&resource_user->post_reclaimer_closure[1],
+                    &ru_post_destructive_reclaimer, resource_user, nullptr);
+  GRPC_CLOSURE_INIT(&resource_user->destroy_closure, &ru_destroy, resource_user,
+                    nullptr);
+  gpr_mu_init(&resource_user->mu);
+  gpr_atm_rel_store(&resource_user->refs, 1);
+  gpr_atm_rel_store(&resource_user->shutdown, 0);
+  resource_user->free_pool = 0;
+  grpc_closure_list_init(&resource_user->on_allocated);
+  resource_user->allocating = false;
+  resource_user->added_to_free_pool = false;
+  gpr_atm_no_barrier_store(&resource_user->num_threads_allocated, 0);
+  resource_user->reclaimers[0] = nullptr;
+  resource_user->reclaimers[1] = nullptr;
+  resource_user->new_reclaimers[0] = nullptr;
+  resource_user->new_reclaimers[1] = nullptr;
+  resource_user->outstanding_allocations = 0;
+  for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
+    resource_user->links[i].next = resource_user->links[i].prev = nullptr;
+  }
+  if (name != nullptr) {
+    resource_user->name = gpr_strdup(name);
+  } else {
+    gpr_asprintf(&resource_user->name, "anonymous_resource_user_%" PRIxPTR,
+                 (intptr_t)resource_user);
+  }
+  return resource_user;
+}
+
+grpc_resource_quota* grpc_resource_user_quota(
+    grpc_resource_user* resource_user) {
+  return resource_user->resource_quota;
+}
+
+static void ru_ref_by(grpc_resource_user* resource_user, gpr_atm amount) {
+  GPR_ASSERT(amount > 0);
+  GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&resource_user->refs, amount) != 0);
+}
+
+static void ru_unref_by(grpc_resource_user* resource_user, gpr_atm amount) {
+  GPR_ASSERT(amount > 0);
+  gpr_atm old = gpr_atm_full_fetch_add(&resource_user->refs, -amount);
+  GPR_ASSERT(old >= amount);
+  if (old == amount) {
+    resource_user->resource_quota->combiner->Run(
+        &resource_user->destroy_closure, GRPC_ERROR_NONE);
+  }
+}
+
+void grpc_resource_user_ref(grpc_resource_user* resource_user) {
+  ru_ref_by(resource_user, 1);
+}
+
+void grpc_resource_user_unref(grpc_resource_user* resource_user) {
+  ru_unref_by(resource_user, 1);
+}
+
+void grpc_resource_user_shutdown(grpc_resource_user* resource_user) {
+  if (gpr_atm_full_fetch_add(&resource_user->shutdown, 1) == 0) {
+    resource_user->resource_quota->combiner->Run(
+        GRPC_CLOSURE_CREATE(ru_shutdown, resource_user, nullptr),
+        GRPC_ERROR_NONE);
+  }
+}
+
+bool grpc_resource_user_allocate_threads(grpc_resource_user* resource_user,
+                                         int thread_count) {
+  GPR_ASSERT(thread_count >= 0);
+  bool is_success = false;
+  gpr_mu_lock(&resource_user->resource_quota->thread_count_mu);
+  grpc_resource_quota* rq = resource_user->resource_quota;
+  if (rq->num_threads_allocated + thread_count <= rq->max_threads) {
+    rq->num_threads_allocated += thread_count;
+    gpr_atm_no_barrier_fetch_add(&resource_user->num_threads_allocated,
+                                 thread_count);
+    is_success = true;
+  }
+  gpr_mu_unlock(&resource_user->resource_quota->thread_count_mu);
+  return is_success;
+}
+
+void grpc_resource_user_free_threads(grpc_resource_user* resource_user,
+                                     int thread_count) {
+  GPR_ASSERT(thread_count >= 0);
+  gpr_mu_lock(&resource_user->resource_quota->thread_count_mu);
+  grpc_resource_quota* rq = resource_user->resource_quota;
+  rq->num_threads_allocated -= thread_count;
+  int old_count = static_cast<int>(gpr_atm_no_barrier_fetch_add(
+      &resource_user->num_threads_allocated, -thread_count));
+  if (old_count < thread_count || rq->num_threads_allocated < 0) {
+    gpr_log(GPR_ERROR,
+            "Releasing more threads (%d) than currently allocated (rq threads: "
+            "%d, ru threads: %d)",
+            thread_count, rq->num_threads_allocated + thread_count, old_count);
+    abort();
+  }
+  gpr_mu_unlock(&resource_user->resource_quota->thread_count_mu);
+}
+
+static bool resource_user_alloc_locked(grpc_resource_user* resource_user,
+                                       size_t size,
+                                       grpc_closure* optional_on_done) {
+  ru_ref_by(resource_user, static_cast<gpr_atm>(size));
+  resource_user->free_pool -= static_cast<int64_t>(size);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO, "RQ %s %s: alloc %" PRIdPTR "; free_pool -> %" PRId64,
+            resource_user->resource_quota->name, resource_user->name, size,
+            resource_user->free_pool);
+  }
+  if (GPR_LIKELY(resource_user->free_pool >= 0)) return true;
+  // Slow path: We need to wait for the free pool to refill.
+  if (optional_on_done != nullptr) {
+    resource_user->outstanding_allocations += static_cast<int64_t>(size);
+    grpc_closure_list_append(&resource_user->on_allocated, optional_on_done,
+                             GRPC_ERROR_NONE);
+  }
+  if (!resource_user->allocating) {
+    resource_user->allocating = true;
+    resource_user->resource_quota->combiner->Run(
+        &resource_user->allocate_closure, GRPC_ERROR_NONE);
+  }
+  return false;
+}
+
+bool grpc_resource_user_safe_alloc(grpc_resource_user* resource_user,
+                                   size_t size) {
+  if (gpr_atm_no_barrier_load(&resource_user->shutdown)) return false;
+  gpr_mu_lock(&resource_user->mu);
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  bool cas_success;
+  do {
+    gpr_atm used = gpr_atm_no_barrier_load(&resource_quota->used);
+    gpr_atm new_used = used + size;
+    if (static_cast<size_t>(new_used) >
+        grpc_resource_quota_peek_size(resource_quota)) {
+      gpr_mu_unlock(&resource_user->mu);
+      return false;
+    }
+    cas_success = gpr_atm_full_cas(&resource_quota->used, used, new_used);
+  } while (!cas_success);
+  resource_user_alloc_locked(resource_user, size, nullptr);
+  gpr_mu_unlock(&resource_user->mu);
+  return true;
+}
+
+bool grpc_resource_user_alloc(grpc_resource_user* resource_user, size_t size,
+                              grpc_closure* optional_on_done) {
+  // TODO(juanlishen): Maybe return immediately if shutting down. Deferring this
+  // because some tests become flaky after the change.
+  gpr_mu_lock(&resource_user->mu);
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  gpr_atm_no_barrier_fetch_add(&resource_quota->used, size);
+  const bool ret =
+      resource_user_alloc_locked(resource_user, size, optional_on_done);
+  gpr_mu_unlock(&resource_user->mu);
+  return ret;
+}
+
+void grpc_resource_user_free(grpc_resource_user* resource_user, size_t size) {
+  gpr_mu_lock(&resource_user->mu);
+  grpc_resource_quota* resource_quota = resource_user->resource_quota;
+  gpr_atm prior = gpr_atm_no_barrier_fetch_add(&resource_quota->used, -size);
+  GPR_ASSERT(prior >= static_cast<long>(size));
+  bool was_zero_or_negative = resource_user->free_pool <= 0;
+  resource_user->free_pool += static_cast<int64_t>(size);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO, "RQ %s %s: free %" PRIdPTR "; free_pool -> %" PRId64,
+            resource_user->resource_quota->name, resource_user->name, size,
+            resource_user->free_pool);
+  }
+  bool is_bigger_than_zero = resource_user->free_pool > 0;
+  if (is_bigger_than_zero && was_zero_or_negative &&
+      !resource_user->added_to_free_pool) {
+    resource_user->added_to_free_pool = true;
+    resource_quota->combiner->Run(&resource_user->add_to_free_pool_closure,
+                                  GRPC_ERROR_NONE);
+  }
+  gpr_mu_unlock(&resource_user->mu);
+  ru_unref_by(resource_user, static_cast<gpr_atm>(size));
+}
+
+void grpc_resource_user_post_reclaimer(grpc_resource_user* resource_user,
+                                       bool destructive,
+                                       grpc_closure* closure) {
+  GPR_ASSERT(resource_user->new_reclaimers[destructive] == nullptr);
+  resource_user->new_reclaimers[destructive] = closure;
+  resource_user->resource_quota->combiner->Run(
+      &resource_user->post_reclaimer_closure[destructive], GRPC_ERROR_NONE);
+}
+
+void grpc_resource_user_finish_reclamation(grpc_resource_user* resource_user) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_resource_quota_trace)) {
+    gpr_log(GPR_INFO, "RQ %s %s: reclamation complete",
+            resource_user->resource_quota->name, resource_user->name);
+  }
+  resource_user->resource_quota->combiner->Run(
+      &resource_user->resource_quota->rq_reclamation_done_closure,
+      GRPC_ERROR_NONE);
+}
+
+void grpc_resource_user_slice_allocator_init(
+    grpc_resource_user_slice_allocator* slice_allocator,
+    grpc_resource_user* resource_user, grpc_iomgr_cb_func cb, void* p) {
+  GRPC_CLOSURE_INIT(&slice_allocator->on_allocated, ru_allocated_slices,
+                    slice_allocator, grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&slice_allocator->on_done, cb, p,
+                    grpc_schedule_on_exec_ctx);
+  slice_allocator->resource_user = resource_user;
+}
+
+bool grpc_resource_user_alloc_slices(
+    grpc_resource_user_slice_allocator* slice_allocator, size_t length,
+    size_t count, grpc_slice_buffer* dest) {
+  if (GPR_UNLIKELY(
+          gpr_atm_no_barrier_load(&slice_allocator->resource_user->shutdown))) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, &slice_allocator->on_allocated,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resource user shutdown"));
+    return false;
+  }
+  slice_allocator->length = length;
+  slice_allocator->count = count;
+  slice_allocator->dest = dest;
+  const bool ret =
+      grpc_resource_user_alloc(slice_allocator->resource_user, count * length,
+                               &slice_allocator->on_allocated);
+  if (ret) ru_alloc_slices(slice_allocator);
+  return ret;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.h
new file mode 100644
index 0000000..ec89a92
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/resource_quota.h	
@@ -0,0 +1,177 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H
+#define GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/closure.h"
+
+/** \file Tracks resource usage against a pool.
+
+    The current implementation tracks only memory usage, but in the future
+    this may be extended to (for example) threads and file descriptors.
+
+    A grpc_resource_quota represents the pooled resources, and
+    grpc_resource_user instances attach to the quota and consume those
+    resources. They also offer a vector for reclamation: if we become
+    resource constrained, grpc_resource_user instances are asked (in turn) to
+    free up whatever they can so that the system as a whole can make progress.
+
+    There are three kinds of reclamation that take place, in order of increasing
+    invasiveness:
+    - an internal reclamation, where cached resource at the resource user level
+      is returned to the quota
+    - a benign reclamation phase, whereby resources that are in use but are not
+      helping anything make progress are reclaimed
+    - a destructive reclamation, whereby resources that are helping something
+      make progress may be enacted so that at least one part of the system can
+      complete.
+
+    Only one reclamation will be outstanding for a given quota at a given time.
+    On each reclamation attempt, the kinds of reclamation are tried in order of
+    increasing invasiveness, stopping at the first one that succeeds. Thus, on a
+    given reclamation attempt, if internal and benign reclamation both fail, it
+    will wind up doing a destructive reclamation. However, the next reclamation
+    attempt may then be able to get what it needs via internal or benign
+    reclamation, due to resources that may have been freed up by the destructive
+    reclamation in the previous attempt.
+
+    Future work will be to expose the current resource pressure so that back
+    pressure can be applied to avoid reclamation phases starting.
+
+    Resource users own references to resource quotas, and resource quotas
+    maintain lists of users (which users arrange to leave before they are
+    destroyed) */
+
+extern grpc_core::TraceFlag grpc_resource_quota_trace;
+
+// TODO(juanlishen): This is a hack. We need to do real accounting instead of
+// hard coding.
+constexpr size_t GRPC_RESOURCE_QUOTA_CALL_SIZE = 15 * 1024;
+constexpr size_t GRPC_RESOURCE_QUOTA_CHANNEL_SIZE = 50 * 1024;
+
+grpc_resource_quota* grpc_resource_quota_ref_internal(
+    grpc_resource_quota* resource_quota);
+void grpc_resource_quota_unref_internal(grpc_resource_quota* resource_quota);
+grpc_resource_quota* grpc_resource_quota_from_channel_args(
+    const grpc_channel_args* channel_args, bool create = true);
+
+/* Return a number indicating current memory pressure:
+   0.0 ==> no memory usage
+   1.0 ==> maximum memory usage */
+double grpc_resource_quota_get_memory_pressure(
+    grpc_resource_quota* resource_quota);
+
+size_t grpc_resource_quota_peek_size(grpc_resource_quota* resource_quota);
+
+typedef struct grpc_resource_user grpc_resource_user;
+
+grpc_resource_user* grpc_resource_user_create(
+    grpc_resource_quota* resource_quota, const char* name);
+
+/* Returns a borrowed reference to the underlying resource quota for this
+   resource user. */
+grpc_resource_quota* grpc_resource_user_quota(
+    grpc_resource_user* resource_user);
+
+void grpc_resource_user_ref(grpc_resource_user* resource_user);
+void grpc_resource_user_unref(grpc_resource_user* resource_user);
+void grpc_resource_user_shutdown(grpc_resource_user* resource_user);
+
+/* Attempts to get quota from the resource_user to create 'thread_count' number
+ * of threads. Returns true if successful (i.e the caller is now free to create
+ * 'thread_count' number of threads) or false if quota is not available */
+bool grpc_resource_user_allocate_threads(grpc_resource_user* resource_user,
+                                         int thread_count);
+/* Releases 'thread_count' worth of quota back to the resource user. The quota
+ * should have been previously obtained successfully by calling
+ * grpc_resource_user_allocate_threads().
+ *
+ * Note: There need not be an exact one-to-one correspondence between
+ * grpc_resource_user_allocate_threads() and grpc_resource_user_free_threads()
+ * calls. The only requirement is that the number of threads allocated should
+ * all be eventually released */
+void grpc_resource_user_free_threads(grpc_resource_user* resource_user,
+                                     int thread_count);
+
+/* Allocates from the resource user 'size' worth of memory if this won't exceed
+ * the resource quota's total size. Returns whether the allocation is done
+ * successfully. If allocated successfully, the memory should be freed by the
+ * caller eventually. */
+bool grpc_resource_user_safe_alloc(grpc_resource_user* resource_user,
+                                   size_t size);
+/* Allocates from the resource user 'size' worth of memory.
+ * If optional_on_done is NULL, then allocate immediately. This may push the
+ * quota over-limit, at which point reclamation will kick in. The caller is
+ * always responsible to free the memory eventually.
+ * Returns true if the allocation was successful. Otherwise, if optional_on_done
+ * is non-NULL, it will be scheduled without error when the allocation has been
+ * granted by the quota, and the caller is responsible to free the memory
+ * eventually. Or it may be scheduled with an error, in which case the caller
+ * fails to allocate the memory and shouldn't free the memory.
+ */
+bool grpc_resource_user_alloc(grpc_resource_user* resource_user, size_t size,
+                              grpc_closure* optional_on_done)
+    GRPC_MUST_USE_RESULT;
+/* Release memory back to the quota */
+void grpc_resource_user_free(grpc_resource_user* resource_user, size_t size);
+/* Post a memory reclaimer to the resource user. Only one benign and one
+   destructive reclaimer can be posted at once. When executed, the reclaimer
+   MUST call grpc_resource_user_finish_reclamation before it completes, to
+   return control to the resource quota. */
+void grpc_resource_user_post_reclaimer(grpc_resource_user* resource_user,
+                                       bool destructive, grpc_closure* closure);
+/* Finish a reclamation step */
+void grpc_resource_user_finish_reclamation(grpc_resource_user* resource_user);
+
+/* Helper to allocate slices from a resource user */
+typedef struct grpc_resource_user_slice_allocator {
+  /* Closure for when a resource user allocation completes */
+  grpc_closure on_allocated;
+  /* Closure to call when slices have been allocated */
+  grpc_closure on_done;
+  /* Length of slices to allocate on the current request */
+  size_t length;
+  /* Number of slices to allocate on the current request */
+  size_t count;
+  /* Destination for slices to allocate on the current request */
+  grpc_slice_buffer* dest;
+  /* Parent resource user */
+  grpc_resource_user* resource_user;
+} grpc_resource_user_slice_allocator;
+
+/* Initialize a slice allocator.
+   When an allocation is completed, calls \a cb with arg \p. */
+void grpc_resource_user_slice_allocator_init(
+    grpc_resource_user_slice_allocator* slice_allocator,
+    grpc_resource_user* resource_user, grpc_iomgr_cb_func cb, void* p);
+
+/* Allocate \a count slices of length \a length into \a dest. Only one request
+   can be outstanding at a time.
+   Returns whether the slice was allocated inline in the function. If true,
+   the \a slice_allocator->on_allocated callback will not be called. */
+bool grpc_resource_user_alloc_slices(
+    grpc_resource_user_slice_allocator* slice_allocator, size_t length,
+    size_t count, grpc_slice_buffer* dest) GRPC_MUST_USE_RESULT;
+
+#endif /* GRPC_CORE_LIB_IOMGR_RESOURCE_QUOTA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr.h
new file mode 100644
index 0000000..5edf735
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr.h	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This header transitively includes other headers that care about include
+ * order, so it should be included first. As a consequence, it should not be
+ * included in any other header. */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/sockaddr_custom.h"
+#include "src/core/lib/iomgr/sockaddr_posix.h"
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_custom.h
new file mode 100644
index 0000000..d85cc50
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_custom.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <uv.h>
+
+// TODO(kpayson)  It would be nice to abstract this so we don't
+// depend on anything uv specific
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif  // GRPC_UV
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_posix.h
new file mode 100644
index 0000000..3cedd90
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_posix.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_SOCKADDR
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.cc
new file mode 100644
index 0000000..2f8ed22
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.cc	
@@ -0,0 +1,299 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+static const uint8_t kV4MappedPrefix[] = {0, 0, 0, 0, 0,    0,
+                                          0, 0, 0, 0, 0xff, 0xff};
+
+int grpc_sockaddr_is_v4mapped(const grpc_resolved_address* resolved_addr,
+                              grpc_resolved_address* resolved_addr4_out) {
+  GPR_ASSERT(resolved_addr != resolved_addr4_out);
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  grpc_sockaddr_in* addr4_out =
+      resolved_addr4_out == nullptr
+          ? nullptr
+          : reinterpret_cast<grpc_sockaddr_in*>(resolved_addr4_out->addr);
+  if (addr->sa_family == GRPC_AF_INET6) {
+    const grpc_sockaddr_in6* addr6 =
+        reinterpret_cast<const grpc_sockaddr_in6*>(addr);
+    if (memcmp(addr6->sin6_addr.s6_addr, kV4MappedPrefix,
+               sizeof(kV4MappedPrefix)) == 0) {
+      if (resolved_addr4_out != nullptr) {
+        /* Normalize ::ffff:0.0.0.0/96 to IPv4. */
+        memset(resolved_addr4_out, 0, sizeof(*resolved_addr4_out));
+        addr4_out->sin_family = GRPC_AF_INET;
+        /* s6_addr32 would be nice, but it's non-standard. */
+        memcpy(&addr4_out->sin_addr, &addr6->sin6_addr.s6_addr[12], 4);
+        addr4_out->sin_port = addr6->sin6_port;
+        resolved_addr4_out->len =
+            static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
+      }
+      return 1;
+    }
+  }
+  return 0;
+}
+
+int grpc_sockaddr_to_v4mapped(const grpc_resolved_address* resolved_addr,
+                              grpc_resolved_address* resolved_addr6_out) {
+  GPR_ASSERT(resolved_addr != resolved_addr6_out);
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  grpc_sockaddr_in6* addr6_out =
+      reinterpret_cast<grpc_sockaddr_in6*>(resolved_addr6_out->addr);
+  if (addr->sa_family == GRPC_AF_INET) {
+    const grpc_sockaddr_in* addr4 =
+        reinterpret_cast<const grpc_sockaddr_in*>(addr);
+    memset(resolved_addr6_out, 0, sizeof(*resolved_addr6_out));
+    addr6_out->sin6_family = GRPC_AF_INET6;
+    memcpy(&addr6_out->sin6_addr.s6_addr[0], kV4MappedPrefix, 12);
+    memcpy(&addr6_out->sin6_addr.s6_addr[12], &addr4->sin_addr, 4);
+    addr6_out->sin6_port = addr4->sin_port;
+    resolved_addr6_out->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in6));
+    return 1;
+  }
+  return 0;
+}
+
+int grpc_sockaddr_is_wildcard(const grpc_resolved_address* resolved_addr,
+                              int* port_out) {
+  const grpc_sockaddr* addr;
+  grpc_resolved_address addr4_normalized;
+  if (grpc_sockaddr_is_v4mapped(resolved_addr, &addr4_normalized)) {
+    resolved_addr = &addr4_normalized;
+  }
+  addr = reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  if (addr->sa_family == GRPC_AF_INET) {
+    /* Check for 0.0.0.0 */
+    const grpc_sockaddr_in* addr4 =
+        reinterpret_cast<const grpc_sockaddr_in*>(addr);
+    if (addr4->sin_addr.s_addr != 0) {
+      return 0;
+    }
+    *port_out = grpc_ntohs(addr4->sin_port);
+    return 1;
+  } else if (addr->sa_family == GRPC_AF_INET6) {
+    /* Check for :: */
+    const grpc_sockaddr_in6* addr6 =
+        reinterpret_cast<const grpc_sockaddr_in6*>(addr);
+    int i;
+    for (i = 0; i < 16; i++) {
+      if (addr6->sin6_addr.s6_addr[i] != 0) {
+        return 0;
+      }
+    }
+    *port_out = grpc_ntohs(addr6->sin6_port);
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+void grpc_sockaddr_make_wildcards(int port, grpc_resolved_address* wild4_out,
+                                  grpc_resolved_address* wild6_out) {
+  grpc_sockaddr_make_wildcard4(port, wild4_out);
+  grpc_sockaddr_make_wildcard6(port, wild6_out);
+}
+
+void grpc_sockaddr_make_wildcard4(int port,
+                                  grpc_resolved_address* resolved_wild_out) {
+  grpc_sockaddr_in* wild_out =
+      reinterpret_cast<grpc_sockaddr_in*>(resolved_wild_out->addr);
+  GPR_ASSERT(port >= 0 && port < 65536);
+  memset(resolved_wild_out, 0, sizeof(*resolved_wild_out));
+  wild_out->sin_family = GRPC_AF_INET;
+  wild_out->sin_port = grpc_htons(static_cast<uint16_t>(port));
+  resolved_wild_out->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
+}
+
+void grpc_sockaddr_make_wildcard6(int port,
+                                  grpc_resolved_address* resolved_wild_out) {
+  grpc_sockaddr_in6* wild_out =
+      reinterpret_cast<grpc_sockaddr_in6*>(resolved_wild_out->addr);
+  GPR_ASSERT(port >= 0 && port < 65536);
+  memset(resolved_wild_out, 0, sizeof(*resolved_wild_out));
+  wild_out->sin6_family = GRPC_AF_INET6;
+  wild_out->sin6_port = grpc_htons(static_cast<uint16_t>(port));
+  resolved_wild_out->len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in6));
+}
+
+int grpc_sockaddr_to_string(char** out,
+                            const grpc_resolved_address* resolved_addr,
+                            int normalize) {
+  const grpc_sockaddr* addr;
+  const int save_errno = errno;
+  grpc_resolved_address addr_normalized;
+  char ntop_buf[GRPC_INET6_ADDRSTRLEN];
+  const void* ip = nullptr;
+  int port = 0;
+  uint32_t sin6_scope_id = 0;
+  int ret;
+
+  *out = nullptr;
+  if (normalize && grpc_sockaddr_is_v4mapped(resolved_addr, &addr_normalized)) {
+    resolved_addr = &addr_normalized;
+  }
+  addr = reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  if (addr->sa_family == GRPC_AF_INET) {
+    const grpc_sockaddr_in* addr4 =
+        reinterpret_cast<const grpc_sockaddr_in*>(addr);
+    ip = &addr4->sin_addr;
+    port = grpc_ntohs(addr4->sin_port);
+  } else if (addr->sa_family == GRPC_AF_INET6) {
+    const grpc_sockaddr_in6* addr6 =
+        reinterpret_cast<const grpc_sockaddr_in6*>(addr);
+    ip = &addr6->sin6_addr;
+    port = grpc_ntohs(addr6->sin6_port);
+    sin6_scope_id = addr6->sin6_scope_id;
+  }
+  if (ip != nullptr && grpc_inet_ntop(addr->sa_family, ip, ntop_buf,
+                                      sizeof(ntop_buf)) != nullptr) {
+    grpc_core::UniquePtr<char> tmp_out;
+    if (sin6_scope_id != 0) {
+      char* host_with_scope;
+      /* Enclose sin6_scope_id with the format defined in RFC 6784 section 2. */
+      gpr_asprintf(&host_with_scope, "%s%%25%" PRIu32, ntop_buf, sin6_scope_id);
+      ret = grpc_core::JoinHostPort(&tmp_out, host_with_scope, port);
+      gpr_free(host_with_scope);
+    } else {
+      ret = grpc_core::JoinHostPort(&tmp_out, ntop_buf, port);
+    }
+    *out = tmp_out.release();
+  } else {
+    ret = gpr_asprintf(out, "(sockaddr family=%d)", addr->sa_family);
+  }
+  /* This is probably redundant, but we wouldn't want to log the wrong error. */
+  errno = save_errno;
+  return ret;
+}
+
+void grpc_string_to_sockaddr(grpc_resolved_address* out, char* addr, int port) {
+  memset(out, 0, sizeof(grpc_resolved_address));
+  grpc_sockaddr_in6* addr6 = (grpc_sockaddr_in6*)out->addr;
+  grpc_sockaddr_in* addr4 = (grpc_sockaddr_in*)out->addr;
+  if (grpc_inet_pton(GRPC_AF_INET6, addr, &addr6->sin6_addr) == 1) {
+    addr6->sin6_family = GRPC_AF_INET6;
+    out->len = sizeof(grpc_sockaddr_in6);
+  } else if (grpc_inet_pton(GRPC_AF_INET, addr, &addr4->sin_addr) == 1) {
+    addr4->sin_family = GRPC_AF_INET;
+    out->len = sizeof(grpc_sockaddr_in);
+  } else {
+    GPR_ASSERT(0);
+  }
+  grpc_sockaddr_set_port(out, port);
+}
+
+char* grpc_sockaddr_to_uri(const grpc_resolved_address* resolved_addr) {
+  if (resolved_addr->len == 0) return nullptr;
+  grpc_resolved_address addr_normalized;
+  if (grpc_sockaddr_is_v4mapped(resolved_addr, &addr_normalized)) {
+    resolved_addr = &addr_normalized;
+  }
+  const char* scheme = grpc_sockaddr_get_uri_scheme(resolved_addr);
+  if (scheme == nullptr || strcmp("unix", scheme) == 0) {
+    return grpc_sockaddr_to_uri_unix_if_possible(resolved_addr);
+  }
+  char* path = nullptr;
+  char* uri_str = nullptr;
+  if (grpc_sockaddr_to_string(&path, resolved_addr,
+                              false /* suppress errors */) &&
+      scheme != nullptr) {
+    gpr_asprintf(&uri_str, "%s:%s", scheme, path);
+  }
+  gpr_free(path);
+  return uri_str != nullptr ? uri_str : nullptr;
+}
+
+const char* grpc_sockaddr_get_uri_scheme(
+    const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  switch (addr->sa_family) {
+    case GRPC_AF_INET:
+      return "ipv4";
+    case GRPC_AF_INET6:
+      return "ipv6";
+    case GRPC_AF_UNIX:
+      return "unix";
+  }
+  return nullptr;
+}
+
+int grpc_sockaddr_get_family(const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  return addr->sa_family;
+}
+
+int grpc_sockaddr_get_port(const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  switch (addr->sa_family) {
+    case GRPC_AF_INET:
+      return grpc_ntohs(((grpc_sockaddr_in*)addr)->sin_port);
+    case GRPC_AF_INET6:
+      return grpc_ntohs(((grpc_sockaddr_in6*)addr)->sin6_port);
+    default:
+      if (grpc_is_unix_socket(resolved_addr)) {
+        return 1;
+      }
+      gpr_log(GPR_ERROR, "Unknown socket family %d in grpc_sockaddr_get_port",
+              addr->sa_family);
+      return 0;
+  }
+}
+
+int grpc_sockaddr_set_port(const grpc_resolved_address* resolved_addr,
+                           int port) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  switch (addr->sa_family) {
+    case GRPC_AF_INET:
+      GPR_ASSERT(port >= 0 && port < 65536);
+      ((grpc_sockaddr_in*)addr)->sin_port =
+          grpc_htons(static_cast<uint16_t>(port));
+      return 1;
+    case GRPC_AF_INET6:
+      GPR_ASSERT(port >= 0 && port < 65536);
+      ((grpc_sockaddr_in6*)addr)->sin6_port =
+          grpc_htons(static_cast<uint16_t>(port));
+      return 1;
+    default:
+      gpr_log(GPR_ERROR, "Unknown socket family %d in grpc_sockaddr_set_port",
+              addr->sa_family);
+      return 0;
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.h
new file mode 100644
index 0000000..a4e90a7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_utils.h	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Returns true if addr is an IPv4-mapped IPv6 address within the
+   ::ffff:0.0.0.0/96 range, or false otherwise.
+
+   If addr4_out is non-NULL, the inner IPv4 address will be copied here when
+   returning true. */
+int grpc_sockaddr_is_v4mapped(const grpc_resolved_address* addr,
+                              grpc_resolved_address* addr4_out);
+
+/* If addr is an AF_INET address, writes the corresponding ::ffff:0.0.0.0/96
+   address to addr6_out and returns true.  Otherwise returns false. */
+int grpc_sockaddr_to_v4mapped(const grpc_resolved_address* addr,
+                              grpc_resolved_address* addr6_out);
+
+/* If addr is ::, 0.0.0.0, or ::ffff:0.0.0.0, writes the port number to
+ *port_out (if not NULL) and returns true, otherwise returns false. */
+int grpc_sockaddr_is_wildcard(const grpc_resolved_address* addr, int* port_out);
+
+/* Writes 0.0.0.0:port and [::]:port to separate sockaddrs. */
+void grpc_sockaddr_make_wildcards(int port, grpc_resolved_address* wild4_out,
+                                  grpc_resolved_address* wild6_out);
+
+/* Writes 0.0.0.0:port. */
+void grpc_sockaddr_make_wildcard4(int port, grpc_resolved_address* wild_out);
+
+/* Writes [::]:port. */
+void grpc_sockaddr_make_wildcard6(int port, grpc_resolved_address* wild_out);
+
+/* Return the IP port number of a sockaddr */
+int grpc_sockaddr_get_port(const grpc_resolved_address* addr);
+
+/* Set IP port number of a sockaddr */
+int grpc_sockaddr_set_port(const grpc_resolved_address* addr, int port);
+
+/* Converts a sockaddr into a newly-allocated human-readable string.
+
+   Currently, only the AF_INET and AF_INET6 families are recognized.
+   If the normalize flag is enabled, ::ffff:0.0.0.0/96 IPv6 addresses are
+   displayed as plain IPv4.
+
+   Usage is similar to gpr_asprintf: returns the number of bytes written
+   (excluding the final '\0'), and *out points to a string which must later be
+   destroyed using gpr_free().
+
+   In the unlikely event of an error, returns -1 and sets *out to NULL.
+   The existing value of errno is always preserved. */
+int grpc_sockaddr_to_string(char** out, const grpc_resolved_address* addr,
+                            int normalize);
+
+void grpc_string_to_sockaddr(grpc_resolved_address* out, char* addr, int port);
+
+/* Returns the URI string corresponding to \a addr */
+char* grpc_sockaddr_to_uri(const grpc_resolved_address* addr);
+
+/* Returns the URI scheme corresponding to \a addr */
+const char* grpc_sockaddr_get_uri_scheme(const grpc_resolved_address* addr);
+
+int grpc_sockaddr_get_family(const grpc_resolved_address* resolved_addr);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_windows.h
new file mode 100644
index 0000000..4d63725
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sockaddr_windows.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+// must be included after the above
+#include <mswsock.h>
+
+typedef struct sockaddr grpc_sockaddr;
+typedef struct sockaddr_in grpc_sockaddr_in;
+typedef struct in_addr grpc_in_addr;
+typedef struct sockaddr_in6 grpc_sockaddr_in6;
+typedef struct in6_addr grpc_in6_addr;
+
+#define GRPC_INET_ADDRSTRLEN INET_ADDRSTRLEN
+#define GRPC_INET6_ADDRSTRLEN INET6_ADDRSTRLEN
+
+#define GRPC_SOCK_STREAM SOCK_STREAM
+#define GRPC_SOCK_DGRAM SOCK_DGRAM
+
+#define GRPC_AF_UNSPEC AF_UNSPEC
+#define GRPC_AF_UNIX AF_UNIX
+#define GRPC_AF_INET AF_INET
+#define GRPC_AF_INET6 AF_INET6
+
+#define GRPC_AI_PASSIVE AI_PASSIVE
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.cc
new file mode 100644
index 0000000..5713776
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.cc	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_SOCKET_FACTORY
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+
+void grpc_socket_factory_init(grpc_socket_factory* factory,
+                              const grpc_socket_factory_vtable* vtable) {
+  factory->vtable = vtable;
+  gpr_ref_init(&factory->refcount, 1);
+}
+
+int grpc_socket_factory_socket(grpc_socket_factory* factory, int domain,
+                               int type, int protocol) {
+  return factory->vtable->socket(factory, domain, type, protocol);
+}
+
+int grpc_socket_factory_bind(grpc_socket_factory* factory, int sockfd,
+                             const grpc_resolved_address* addr) {
+  return factory->vtable->bind(factory, sockfd, addr);
+}
+
+int grpc_socket_factory_compare(grpc_socket_factory* a,
+                                grpc_socket_factory* b) {
+  int c = GPR_ICMP(a, b);
+  if (c != 0) {
+    grpc_socket_factory* sma = a;
+    grpc_socket_factory* smb = b;
+    c = GPR_ICMP(sma->vtable, smb->vtable);
+    if (c == 0) {
+      c = sma->vtable->compare(sma, smb);
+    }
+  }
+  return c;
+}
+
+grpc_socket_factory* grpc_socket_factory_ref(grpc_socket_factory* factory) {
+  gpr_ref(&factory->refcount);
+  return factory;
+}
+
+void grpc_socket_factory_unref(grpc_socket_factory* factory) {
+  if (gpr_unref(&factory->refcount)) {
+    factory->vtable->destroy(factory);
+  }
+}
+
+static void* socket_factory_arg_copy(void* p) {
+  return grpc_socket_factory_ref(static_cast<grpc_socket_factory*>(p));
+}
+
+static void socket_factory_arg_destroy(void* p) {
+  grpc_socket_factory_unref(static_cast<grpc_socket_factory*>(p));
+}
+
+static int socket_factory_cmp(void* a, void* b) {
+  return grpc_socket_factory_compare(static_cast<grpc_socket_factory*>(a),
+                                     static_cast<grpc_socket_factory*>(b));
+}
+
+static const grpc_arg_pointer_vtable socket_factory_arg_vtable = {
+    socket_factory_arg_copy, socket_factory_arg_destroy, socket_factory_cmp};
+
+grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory* factory) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_SOCKET_FACTORY,
+                                         factory, &socket_factory_arg_vtable);
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.h
new file mode 100644
index 0000000..9a52f4e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_factory_posix.h	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/** The virtual table of grpc_socket_factory */
+typedef struct {
+  /** Replacement for socket(2) */
+  int (*socket)(grpc_socket_factory* factory, int domain, int type,
+                int protocol);
+  /** Replacement for bind(2) */
+  int (*bind)(grpc_socket_factory* factory, int sockfd,
+              const grpc_resolved_address* addr);
+  /** Compare socket factory \a a and \a b */
+  int (*compare)(grpc_socket_factory* a, grpc_socket_factory* b);
+  /** Destroys the socket factory instance */
+  void (*destroy)(grpc_socket_factory* factory);
+} grpc_socket_factory_vtable;
+
+/** The Socket Factory interface allows changes on socket options */
+struct grpc_socket_factory {
+  const grpc_socket_factory_vtable* vtable;
+  gpr_refcount refcount;
+};
+
+/** called by concrete implementations to initialize the base struct */
+void grpc_socket_factory_init(grpc_socket_factory* factory,
+                              const grpc_socket_factory_vtable* vtable);
+
+/** Wrap \a factory as a grpc_arg */
+grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory* factory);
+
+/** Perform the equivalent of a socket(2) operation using \a factory */
+int grpc_socket_factory_socket(grpc_socket_factory* factory, int domain,
+                               int type, int protocol);
+
+/** Perform the equivalent of a bind(2) operation using \a factory */
+int grpc_socket_factory_bind(grpc_socket_factory* factory, int sockfd,
+                             const grpc_resolved_address* addr);
+
+/** Compare if \a a and \a b are the same factory or have same settings */
+int grpc_socket_factory_compare(grpc_socket_factory* a, grpc_socket_factory* b);
+
+grpc_socket_factory* grpc_socket_factory_ref(grpc_socket_factory* factory);
+void grpc_socket_factory_unref(grpc_socket_factory* factory);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.cc
new file mode 100644
index 0000000..a448c9f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.cc	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/socket_mutator.h"
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/useful.h"
+
+void grpc_socket_mutator_init(grpc_socket_mutator* mutator,
+                              const grpc_socket_mutator_vtable* vtable) {
+  mutator->vtable = vtable;
+  gpr_ref_init(&mutator->refcount, 1);
+}
+
+grpc_socket_mutator* grpc_socket_mutator_ref(grpc_socket_mutator* mutator) {
+  gpr_ref(&mutator->refcount);
+  return mutator;
+}
+
+bool grpc_socket_mutator_mutate_fd(grpc_socket_mutator* mutator, int fd) {
+  return mutator->vtable->mutate_fd(fd, mutator);
+}
+
+int grpc_socket_mutator_compare(grpc_socket_mutator* a,
+                                grpc_socket_mutator* b) {
+  int c = GPR_ICMP(a, b);
+  if (c != 0) {
+    grpc_socket_mutator* sma = a;
+    grpc_socket_mutator* smb = b;
+    c = GPR_ICMP(sma->vtable, smb->vtable);
+    if (c == 0) {
+      c = sma->vtable->compare(sma, smb);
+    }
+  }
+  return c;
+}
+
+void grpc_socket_mutator_unref(grpc_socket_mutator* mutator) {
+  if (gpr_unref(&mutator->refcount)) {
+    mutator->vtable->destroy(mutator);
+  }
+}
+
+static void* socket_mutator_arg_copy(void* p) {
+  return grpc_socket_mutator_ref(static_cast<grpc_socket_mutator*>(p));
+}
+
+static void socket_mutator_arg_destroy(void* p) {
+  grpc_socket_mutator_unref(static_cast<grpc_socket_mutator*>(p));
+}
+
+static int socket_mutator_cmp(void* a, void* b) {
+  return grpc_socket_mutator_compare(static_cast<grpc_socket_mutator*>(a),
+                                     static_cast<grpc_socket_mutator*>(b));
+}
+
+static const grpc_arg_pointer_vtable socket_mutator_arg_vtable = {
+    socket_mutator_arg_copy, socket_mutator_arg_destroy, socket_mutator_cmp};
+
+grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator* mutator) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_SOCKET_MUTATOR,
+                                         mutator, &socket_mutator_arg_vtable);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.h
new file mode 100644
index 0000000..8742a3b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_mutator.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+
+#include <stdbool.h>
+
+/** The virtual table of grpc_socket_mutator */
+typedef struct {
+  /** Mutates the socket options of \a fd */
+  bool (*mutate_fd)(int fd, grpc_socket_mutator* mutator);
+  /** Compare socket mutator \a a and \a b */
+  int (*compare)(grpc_socket_mutator* a, grpc_socket_mutator* b);
+  /** Destroys the socket mutator instance */
+  void (*destroy)(grpc_socket_mutator* mutator);
+} grpc_socket_mutator_vtable;
+
+/** The Socket Mutator interface allows changes on socket options */
+struct grpc_socket_mutator {
+  const grpc_socket_mutator_vtable* vtable;
+  gpr_refcount refcount;
+};
+
+/** called by concrete implementations to initialize the base struct */
+void grpc_socket_mutator_init(grpc_socket_mutator* mutator,
+                              const grpc_socket_mutator_vtable* vtable);
+
+/** Wrap \a mutator as a grpc_arg */
+grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator* mutator);
+
+/** Perform the file descriptor mutation operation of \a mutator on \a fd */
+bool grpc_socket_mutator_mutate_fd(grpc_socket_mutator* mutator, int fd);
+
+/** Compare if \a a and \a b are the same mutator or have same settings */
+int grpc_socket_mutator_compare(grpc_socket_mutator* a, grpc_socket_mutator* b);
+
+grpc_socket_mutator* grpc_socket_mutator_ref(grpc_socket_mutator* mutator);
+void grpc_socket_mutator_unref(grpc_socket_mutator* mutator);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_MUTATOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils.h
new file mode 100644
index 0000000..14bb081
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+// TODO(juanlishen): The following functions might be simple enough to implement
+// ourselves, so that they don't cause any portability hassle.
+
+/* A wrapper for htons on POSIX and Windows */
+uint16_t grpc_htons(uint16_t hostshort);
+
+/* A wrapper for ntohs on POSIX and WINDOWS */
+uint16_t grpc_ntohs(uint16_t netshort);
+
+/* A wrapper for htonl on POSIX and Windows */
+uint32_t grpc_htonl(uint32_t hostlong);
+
+/* A wrapper for ntohl on POSIX and WINDOWS */
+uint32_t grpc_ntohl(uint32_t netlong);
+
+/* A wrapper for inet_pton on POSIX and WINDOWS */
+int grpc_inet_pton(int af, const char* src, void* dst);
+
+/* A wrapper for inet_ntop on POSIX systems and InetNtop on Windows systems */
+const char* grpc_inet_ntop(int af, const void* src, char* dst, size_t size);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_common_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_common_posix.cc
new file mode 100644
index 0000000..3974ae7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_common_posix.cc	
@@ -0,0 +1,492 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON
+
+#include "src/core/lib/iomgr/socket_utils.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <netinet/in.h>
+#ifdef GRPC_LINUX_TCP_H
+#include <linux/tcp.h>
+#else
+#include <netinet/tcp.h>
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+/* set a socket to use zerocopy */
+grpc_error* grpc_set_socket_zerocopy(int fd) {
+#ifdef GRPC_LINUX_ERRQUEUE
+  const int enable = 1;
+  auto err = setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, &enable, sizeof(enable));
+  if (err != 0) {
+    return GRPC_OS_ERROR(errno, "setsockopt(SO_ZEROCOPY)");
+  }
+  return GRPC_ERROR_NONE;
+#else
+  return GRPC_OS_ERROR(ENOSYS, "setsockopt(SO_ZEROCOPY)");
+#endif
+}
+
+/* set a socket to non blocking mode */
+grpc_error* grpc_set_socket_nonblocking(int fd, int non_blocking) {
+  int oldflags = fcntl(fd, F_GETFL, 0);
+  if (oldflags < 0) {
+    return GRPC_OS_ERROR(errno, "fcntl");
+  }
+
+  if (non_blocking) {
+    oldflags |= O_NONBLOCK;
+  } else {
+    oldflags &= ~O_NONBLOCK;
+  }
+
+  if (fcntl(fd, F_SETFL, oldflags) != 0) {
+    return GRPC_OS_ERROR(errno, "fcntl");
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_set_socket_no_sigpipe_if_possible(int fd) {
+#ifdef GRPC_HAVE_SO_NOSIGPIPE
+  int val = 1;
+  int newval;
+  socklen_t intlen = sizeof(newval);
+  if (0 != setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &val, sizeof(val))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(SO_NOSIGPIPE)");
+  }
+  if (0 != getsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &newval, &intlen)) {
+    return GRPC_OS_ERROR(errno, "getsockopt(SO_NOSIGPIPE)");
+  }
+  if ((newval != 0) != (val != 0)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_NOSIGPIPE");
+  }
+#else
+  // Avoid unused parameter warning for conditional parameter
+  (void)fd;
+#endif
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_set_socket_ip_pktinfo_if_possible(int fd) {
+  // Use conditionally-important parameter to avoid warning
+  (void)fd;
+#ifdef GRPC_HAVE_IP_PKTINFO
+  int get_local_ip = 1;
+  if (0 != setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &get_local_ip,
+                      sizeof(get_local_ip))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(IP_PKTINFO)");
+  }
+#endif
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_set_socket_ipv6_recvpktinfo_if_possible(int fd) {
+  // Use conditionally-important parameter to avoid warning
+  (void)fd;
+#ifdef GRPC_HAVE_IPV6_RECVPKTINFO
+  int get_local_ip = 1;
+  if (0 != setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &get_local_ip,
+                      sizeof(get_local_ip))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(IPV6_RECVPKTINFO)");
+  }
+#endif
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_set_socket_sndbuf(int fd, int buffer_size_bytes) {
+  return 0 == setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &buffer_size_bytes,
+                         sizeof(buffer_size_bytes))
+             ? GRPC_ERROR_NONE
+             : GRPC_OS_ERROR(errno, "setsockopt(SO_SNDBUF)");
+}
+
+grpc_error* grpc_set_socket_rcvbuf(int fd, int buffer_size_bytes) {
+  return 0 == setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &buffer_size_bytes,
+                         sizeof(buffer_size_bytes))
+             ? GRPC_ERROR_NONE
+             : GRPC_OS_ERROR(errno, "setsockopt(SO_RCVBUF)");
+}
+
+/* set a socket to close on exec */
+grpc_error* grpc_set_socket_cloexec(int fd, int close_on_exec) {
+  int oldflags = fcntl(fd, F_GETFD, 0);
+  if (oldflags < 0) {
+    return GRPC_OS_ERROR(errno, "fcntl");
+  }
+
+  if (close_on_exec) {
+    oldflags |= FD_CLOEXEC;
+  } else {
+    oldflags &= ~FD_CLOEXEC;
+  }
+
+  if (fcntl(fd, F_SETFD, oldflags) != 0) {
+    return GRPC_OS_ERROR(errno, "fcntl");
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+/* set a socket to reuse old addresses */
+grpc_error* grpc_set_socket_reuse_addr(int fd, int reuse) {
+  int val = (reuse != 0);
+  int newval;
+  socklen_t intlen = sizeof(newval);
+  if (0 != setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(SO_REUSEADDR)");
+  }
+  if (0 != getsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &newval, &intlen)) {
+    return GRPC_OS_ERROR(errno, "getsockopt(SO_REUSEADDR)");
+  }
+  if ((newval != 0) != val) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_REUSEADDR");
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+/* set a socket to reuse old addresses */
+grpc_error* grpc_set_socket_reuse_port(int fd, int reuse) {
+#ifndef SO_REUSEPORT
+  return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+      "SO_REUSEPORT unavailable on compiling system");
+#else
+  int val = (reuse != 0);
+  int newval;
+  socklen_t intlen = sizeof(newval);
+  if (0 != setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(SO_REUSEPORT)");
+  }
+  if (0 != getsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &newval, &intlen)) {
+    return GRPC_OS_ERROR(errno, "getsockopt(SO_REUSEPORT)");
+  }
+  if ((newval != 0) != val) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set SO_REUSEPORT");
+  }
+
+  return GRPC_ERROR_NONE;
+#endif
+}
+
+static gpr_once g_probe_so_reuesport_once = GPR_ONCE_INIT;
+static int g_support_so_reuseport = false;
+
+void probe_so_reuseport_once(void) {
+#ifndef GPR_MANYLINUX1
+  int s = socket(AF_INET, SOCK_STREAM, 0);
+  if (s < 0) {
+    /* This might be an ipv6-only environment in which case 'socket(AF_INET,..)'
+       call would fail. Try creating IPv6 socket in that case */
+    s = socket(AF_INET6, SOCK_STREAM, 0);
+  }
+  if (s >= 0) {
+    g_support_so_reuseport = GRPC_LOG_IF_ERROR(
+        "check for SO_REUSEPORT", grpc_set_socket_reuse_port(s, 1));
+    close(s);
+  }
+#endif
+}
+
+bool grpc_is_socket_reuse_port_supported() {
+  gpr_once_init(&g_probe_so_reuesport_once, probe_so_reuseport_once);
+  return g_support_so_reuseport;
+}
+
+/* disable nagle */
+grpc_error* grpc_set_socket_low_latency(int fd, int low_latency) {
+  int val = (low_latency != 0);
+  int newval;
+  socklen_t intlen = sizeof(newval);
+  if (0 != setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val))) {
+    return GRPC_OS_ERROR(errno, "setsockopt(TCP_NODELAY)");
+  }
+  if (0 != getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &newval, &intlen)) {
+    return GRPC_OS_ERROR(errno, "getsockopt(TCP_NODELAY)");
+  }
+  if ((newval != 0) != val) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set TCP_NODELAY");
+  }
+  return GRPC_ERROR_NONE;
+}
+
+/* The default values for TCP_USER_TIMEOUT are currently configured to be in
+ * line with the default values of KEEPALIVE_TIMEOUT as proposed in
+ * https://github.com/grpc/proposal/blob/master/A18-tcp-user-timeout.md */
+#define DEFAULT_CLIENT_TCP_USER_TIMEOUT_MS 20000 /* 20 seconds */
+#define DEFAULT_SERVER_TCP_USER_TIMEOUT_MS 20000 /* 20 seconds */
+
+static int g_default_client_tcp_user_timeout_ms =
+    DEFAULT_CLIENT_TCP_USER_TIMEOUT_MS;
+static int g_default_server_tcp_user_timeout_ms =
+    DEFAULT_SERVER_TCP_USER_TIMEOUT_MS;
+static bool g_default_client_tcp_user_timeout_enabled = false;
+static bool g_default_server_tcp_user_timeout_enabled = true;
+
+void config_default_tcp_user_timeout(bool enable, int timeout, bool is_client) {
+  if (is_client) {
+    g_default_client_tcp_user_timeout_enabled = enable;
+    if (timeout > 0) {
+      g_default_client_tcp_user_timeout_ms = timeout;
+    }
+  } else {
+    g_default_server_tcp_user_timeout_enabled = enable;
+    if (timeout > 0) {
+      g_default_server_tcp_user_timeout_ms = timeout;
+    }
+  }
+}
+
+/* Set TCP_USER_TIMEOUT */
+grpc_error* grpc_set_socket_tcp_user_timeout(
+    int fd, const grpc_channel_args* channel_args, bool is_client) {
+  // Use conditionally-important parameter to avoid warning
+  (void)fd;
+  (void)channel_args;
+  (void)is_client;
+#ifdef GRPC_HAVE_TCP_USER_TIMEOUT
+  bool enable;
+  int timeout;
+  if (is_client) {
+    enable = g_default_client_tcp_user_timeout_enabled;
+    timeout = g_default_client_tcp_user_timeout_ms;
+  } else {
+    enable = g_default_server_tcp_user_timeout_enabled;
+    timeout = g_default_server_tcp_user_timeout_ms;
+  }
+  if (channel_args) {
+    for (unsigned int i = 0; i < channel_args->num_args; i++) {
+      if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_KEEPALIVE_TIME_MS)) {
+        const int value = grpc_channel_arg_get_integer(
+            &channel_args->args[i], grpc_integer_options{0, 1, INT_MAX});
+        /* Continue using default if value is 0 */
+        if (value == 0) {
+          continue;
+        }
+        /* Disable if value is INT_MAX */
+        enable = value != INT_MAX;
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_KEEPALIVE_TIMEOUT_MS)) {
+        const int value = grpc_channel_arg_get_integer(
+            &channel_args->args[i], grpc_integer_options{0, 1, INT_MAX});
+        /* Continue using default if value is 0 */
+        if (value == 0) {
+          continue;
+        }
+        timeout = value;
+      }
+    }
+  }
+  if (enable) {
+    extern grpc_core::TraceFlag grpc_tcp_trace;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "Enabling TCP_USER_TIMEOUT with a timeout of %d ms",
+              timeout);
+    }
+    int newval;
+    socklen_t len = sizeof(newval);
+    if (0 != setsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT, &timeout,
+                        sizeof(timeout))) {
+      gpr_log(GPR_ERROR, "setsockopt(TCP_USER_TIMEOUT) %s", strerror(errno));
+      return GRPC_ERROR_NONE;
+    }
+    if (0 != getsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT, &newval, &len)) {
+      gpr_log(GPR_ERROR, "getsockopt(TCP_USER_TIMEOUT) %s", strerror(errno));
+      return GRPC_ERROR_NONE;
+    }
+    if (newval != timeout) {
+      /* Do not fail on failing to set TCP_USER_TIMEOUT for now. */
+      gpr_log(GPR_ERROR, "Failed to set TCP_USER_TIMEOUT");
+      return GRPC_ERROR_NONE;
+    }
+  }
+#else
+  extern grpc_core::TraceFlag grpc_tcp_trace;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP_USER_TIMEOUT not supported for this platform");
+  }
+#endif /* GRPC_HAVE_TCP_USER_TIMEOUT */
+  return GRPC_ERROR_NONE;
+}
+
+/* set a socket using a grpc_socket_mutator */
+grpc_error* grpc_set_socket_with_mutator(int fd, grpc_socket_mutator* mutator) {
+  GPR_ASSERT(mutator);
+  if (!grpc_socket_mutator_mutate_fd(mutator, fd)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("grpc_socket_mutator failed.");
+  }
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_apply_socket_mutator_in_args(int fd,
+                                              const grpc_channel_args* args) {
+  const grpc_arg* socket_mutator_arg =
+      grpc_channel_args_find(args, GRPC_ARG_SOCKET_MUTATOR);
+  if (socket_mutator_arg == nullptr) {
+    return GRPC_ERROR_NONE;
+  }
+  GPR_DEBUG_ASSERT(socket_mutator_arg->type == GRPC_ARG_POINTER);
+  grpc_socket_mutator* mutator =
+      static_cast<grpc_socket_mutator*>(socket_mutator_arg->value.pointer.p);
+  return grpc_set_socket_with_mutator(fd, mutator);
+}
+
+static gpr_once g_probe_ipv6_once = GPR_ONCE_INIT;
+static int g_ipv6_loopback_available;
+
+static void probe_ipv6_once(void) {
+  int fd = socket(AF_INET6, SOCK_STREAM, 0);
+  g_ipv6_loopback_available = 0;
+  if (fd < 0) {
+    gpr_log(GPR_INFO, "Disabling AF_INET6 sockets because socket() failed.");
+  } else {
+    grpc_sockaddr_in6 addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.sin6_family = AF_INET6;
+    addr.sin6_addr.s6_addr[15] = 1; /* [::1]:0 */
+    if (bind(fd, reinterpret_cast<grpc_sockaddr*>(&addr), sizeof(addr)) == 0) {
+      g_ipv6_loopback_available = 1;
+    } else {
+      gpr_log(GPR_INFO,
+              "Disabling AF_INET6 sockets because ::1 is not available.");
+    }
+    close(fd);
+  }
+}
+
+int grpc_ipv6_loopback_available(void) {
+  gpr_once_init(&g_probe_ipv6_once, probe_ipv6_once);
+  return g_ipv6_loopback_available;
+}
+
+/* This should be 0 in production, but it may be enabled for testing or
+   debugging purposes, to simulate an environment where IPv6 sockets can't
+   also speak IPv4. */
+int grpc_forbid_dualstack_sockets_for_testing = 0;
+
+static int set_socket_dualstack(int fd) {
+  if (!grpc_forbid_dualstack_sockets_for_testing) {
+    const int off = 0;
+    return 0 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &off, sizeof(off));
+  } else {
+    /* Force an IPv6-only socket, for testing purposes. */
+    const int on = 1;
+    setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
+    return 0;
+  }
+}
+
+static grpc_error* error_for_fd(int fd, const grpc_resolved_address* addr) {
+  if (fd >= 0) return GRPC_ERROR_NONE;
+  char* addr_str;
+  grpc_sockaddr_to_string(&addr_str, addr, 0);
+  grpc_error* err = grpc_error_set_str(GRPC_OS_ERROR(errno, "socket"),
+                                       GRPC_ERROR_STR_TARGET_ADDRESS,
+                                       grpc_slice_from_copied_string(addr_str));
+  gpr_free(addr_str);
+  return err;
+}
+
+grpc_error* grpc_create_dualstack_socket(
+    const grpc_resolved_address* resolved_addr, int type, int protocol,
+    grpc_dualstack_mode* dsmode, int* newfd) {
+  return grpc_create_dualstack_socket_using_factory(
+      nullptr, resolved_addr, type, protocol, dsmode, newfd);
+}
+
+static int create_socket(grpc_socket_factory* factory, int domain, int type,
+                         int protocol) {
+  return (factory != nullptr)
+             ? grpc_socket_factory_socket(factory, domain, type, protocol)
+             : socket(domain, type, protocol);
+}
+
+grpc_error* grpc_create_dualstack_socket_using_factory(
+    grpc_socket_factory* factory, const grpc_resolved_address* resolved_addr,
+    int type, int protocol, grpc_dualstack_mode* dsmode, int* newfd) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  int family = addr->sa_family;
+  if (family == AF_INET6) {
+    if (grpc_ipv6_loopback_available()) {
+      *newfd = create_socket(factory, family, type, protocol);
+    } else {
+      *newfd = -1;
+      errno = EAFNOSUPPORT;
+    }
+    /* Check if we've got a valid dualstack socket. */
+    if (*newfd >= 0 && set_socket_dualstack(*newfd)) {
+      *dsmode = GRPC_DSMODE_DUALSTACK;
+      return GRPC_ERROR_NONE;
+    }
+    /* If this isn't an IPv4 address, then return whatever we've got. */
+    if (!grpc_sockaddr_is_v4mapped(resolved_addr, nullptr)) {
+      *dsmode = GRPC_DSMODE_IPV6;
+      return error_for_fd(*newfd, resolved_addr);
+    }
+    /* Fall back to AF_INET. */
+    if (*newfd >= 0) {
+      close(*newfd);
+    }
+    family = AF_INET;
+  }
+  *dsmode = family == AF_INET ? GRPC_DSMODE_IPV4 : GRPC_DSMODE_NONE;
+  *newfd = create_socket(factory, family, type, protocol);
+  return error_for_fd(*newfd, resolved_addr);
+}
+
+uint16_t grpc_htons(uint16_t hostshort) { return htons(hostshort); }
+
+uint16_t grpc_ntohs(uint16_t netshort) { return ntohs(netshort); }
+
+uint32_t grpc_htonl(uint32_t hostlong) { return htonl(hostlong); }
+
+uint32_t grpc_ntohl(uint32_t netlong) { return ntohl(netlong); }
+
+int grpc_inet_pton(int af, const char* src, void* dst) {
+  return inet_pton(af, src, dst);
+}
+
+const char* grpc_inet_ntop(int af, const void* src, char* dst, size_t size) {
+  GPR_ASSERT(size <= (socklen_t)-1);
+  return inet_ntop(af, src, dst, static_cast<socklen_t>(size));
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_linux.cc
new file mode 100644
index 0000000..34f93cc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_linux.cc	
@@ -0,0 +1,42 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_LINUX_SOCKETUTILS
+
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+#include <grpc/support/log.h>
+
+#include <sys/socket.h>
+#include <sys/types.h>
+
+int grpc_accept4(int sockfd, grpc_resolved_address* resolved_addr, int nonblock,
+                 int cloexec) {
+  int flags = 0;
+  flags |= nonblock ? SOCK_NONBLOCK : 0;
+  flags |= cloexec ? SOCK_CLOEXEC : 0;
+  return accept4(sockfd, reinterpret_cast<grpc_sockaddr*>(resolved_addr->addr),
+                 &resolved_addr->len, flags);
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.cc
new file mode 100644
index 0000000..c48da52
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.cc	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKETUTILS
+
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/iomgr/sockaddr.h"
+
+int grpc_accept4(int sockfd, grpc_resolved_address* resolved_addr, int nonblock,
+                 int cloexec) {
+  int fd, flags;
+  fd = accept(sockfd, reinterpret_cast<grpc_sockaddr*>(resolved_addr->addr),
+              &resolved_addr->len);
+  if (fd >= 0) {
+    if (nonblock) {
+      flags = fcntl(fd, F_GETFL, 0);
+      if (flags < 0) goto close_and_error;
+      if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) != 0) goto close_and_error;
+    }
+    if (cloexec) {
+      flags = fcntl(fd, F_GETFD, 0);
+      if (flags < 0) goto close_and_error;
+      if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) != 0) goto close_and_error;
+    }
+  }
+  return fd;
+
+close_and_error:
+  close(fd);
+  return -1;
+}
+
+#endif /* GRPC_POSIX_SOCKETUTILS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.h
new file mode 100644
index 0000000..734d340
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_posix.h	
@@ -0,0 +1,160 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
+#include "src/core/lib/iomgr/socket_mutator.h"
+
+#ifdef GRPC_LINUX_ERRQUEUE
+#ifndef SO_ZEROCOPY
+#define SO_ZEROCOPY 60
+#endif
+#ifndef SO_EE_ORIGIN_ZEROCOPY
+#define SO_EE_ORIGIN_ZEROCOPY 5
+#endif
+#endif /* ifdef GRPC_LINUX_ERRQUEUE */
+
+/* a wrapper for accept or accept4 */
+int grpc_accept4(int sockfd, grpc_resolved_address* resolved_addr, int nonblock,
+                 int cloexec);
+
+/* set a socket to use zerocopy */
+grpc_error* grpc_set_socket_zerocopy(int fd);
+
+/* set a socket to non blocking mode */
+grpc_error* grpc_set_socket_nonblocking(int fd, int non_blocking);
+
+/* set a socket to close on exec */
+grpc_error* grpc_set_socket_cloexec(int fd, int close_on_exec);
+
+/* set a socket to reuse old addresses */
+grpc_error* grpc_set_socket_reuse_addr(int fd, int reuse);
+
+/* return true if SO_REUSEPORT is supported */
+bool grpc_is_socket_reuse_port_supported();
+
+/* disable nagle */
+grpc_error* grpc_set_socket_low_latency(int fd, int low_latency);
+
+/* set SO_REUSEPORT */
+grpc_error* grpc_set_socket_reuse_port(int fd, int reuse);
+
+/* Configure the default values for TCP_USER_TIMEOUT */
+void config_default_tcp_user_timeout(bool enable, int timeout, bool is_client);
+
+/* Set TCP_USER_TIMEOUT */
+grpc_error* grpc_set_socket_tcp_user_timeout(
+    int fd, const grpc_channel_args* channel_args, bool is_client);
+
+/* Returns true if this system can create AF_INET6 sockets bound to ::1.
+   The value is probed once, and cached for the life of the process.
+
+   This is more restrictive than checking for socket(AF_INET6) to succeed,
+   because Linux with "net.ipv6.conf.all.disable_ipv6 = 1" is able to create
+   and bind IPv6 sockets, but cannot connect to a getsockname() of [::]:port
+   without a valid loopback interface.  Rather than expose this half-broken
+   state to library users, we turn off IPv6 sockets. */
+int grpc_ipv6_loopback_available(void);
+
+/* Tries to set SO_NOSIGPIPE if available on this platform.
+   If SO_NO_SIGPIPE is not available, returns 1. */
+grpc_error* grpc_set_socket_no_sigpipe_if_possible(int fd);
+
+/* Tries to set IP_PKTINFO if available on this platform.
+   If IP_PKTINFO is not available, returns 1. */
+grpc_error* grpc_set_socket_ip_pktinfo_if_possible(int fd);
+
+/* Tries to set IPV6_RECVPKTINFO if available on this platform.
+   If IPV6_RECVPKTINFO is not available, returns 1. */
+grpc_error* grpc_set_socket_ipv6_recvpktinfo_if_possible(int fd);
+
+/* Tries to set the socket's send buffer to given size. */
+grpc_error* grpc_set_socket_sndbuf(int fd, int buffer_size_bytes);
+
+/* Tries to set the socket's receive buffer to given size. */
+grpc_error* grpc_set_socket_rcvbuf(int fd, int buffer_size_bytes);
+
+/* Tries to set the socket using a grpc_socket_mutator */
+grpc_error* grpc_set_socket_with_mutator(int fd, grpc_socket_mutator* mutator);
+
+/* Extracts the first socket mutator from args if any and applies on the fd. */
+grpc_error* grpc_apply_socket_mutator_in_args(int fd,
+                                              const grpc_channel_args* args);
+
+/* An enum to keep track of IPv4/IPv6 socket modes.
+
+   Currently, this information is only used when a socket is first created, but
+   in the future we may wish to store it alongside the fd.  This would let calls
+   like sendto() know which family to use without asking the kernel first. */
+typedef enum grpc_dualstack_mode {
+  /* Uninitialized, or a non-IP socket. */
+  GRPC_DSMODE_NONE,
+  /* AF_INET only. */
+  GRPC_DSMODE_IPV4,
+  /* AF_INET6 only, because IPV6_V6ONLY could not be cleared. */
+  GRPC_DSMODE_IPV6,
+  /* AF_INET6, which also supports ::ffff-mapped IPv4 addresses. */
+  GRPC_DSMODE_DUALSTACK
+} grpc_dualstack_mode;
+
+/* Only tests should use this flag. */
+extern int grpc_forbid_dualstack_sockets_for_testing;
+
+/* Creates a new socket for connecting to (or listening on) an address.
+
+   If addr is AF_INET6, this creates an IPv6 socket first.  If that fails,
+   and addr is within ::ffff:0.0.0.0/96, then it automatically falls back to
+   an IPv4 socket.
+
+   If addr is AF_INET, AF_UNIX, or anything else, then this is similar to
+   calling socket() directly.
+
+   Returns an fd on success, otherwise returns -1 with errno set to the result
+   of a failed socket() call.
+
+   The *dsmode output indicates which address family was actually created.
+   The recommended way to use this is:
+   - First convert to IPv6 using grpc_sockaddr_to_v4mapped().
+   - Create the socket.
+   - If *dsmode is IPV4, use grpc_sockaddr_is_v4mapped() to convert back to
+     IPv4, so that bind() or connect() see the correct family.
+   Also, it's important to distinguish between DUALSTACK and IPV6 when
+   listening on the [::] wildcard address. */
+grpc_error* grpc_create_dualstack_socket(const grpc_resolved_address* addr,
+                                         int type, int protocol,
+                                         grpc_dualstack_mode* dsmode,
+                                         int* newfd);
+
+/* Same as grpc_create_dualstack_socket(), but use the given socket factory (if
+   non-null) to create the socket, rather than calling socket() directly. */
+grpc_error* grpc_create_dualstack_socket_using_factory(
+    grpc_socket_factory* factory, const grpc_resolved_address* addr, int type,
+    int protocol, grpc_dualstack_mode* dsmode, int* newfd);
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_uv.cc
new file mode 100644
index 0000000..b5f96b5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_uv.cc	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <grpc/support/log.h>
+
+#include <uv.h>
+
+uint16_t grpc_htons(uint16_t hostshort) { return htons(hostshort); }
+
+uint16_t grpc_ntohs(uint16_t netshort) { return ntohs(netshort); }
+
+uint32_t grpc_htonl(uint32_t hostlong) { return htonl(hostlong); }
+
+uint32_t grpc_ntohl(uint32_t netlong) { return ntohl(netlong); }
+
+int grpc_inet_pton(int af, const char* src, void* dst) {
+  return inet_pton(af, src, dst);
+}
+
+const char* grpc_inet_ntop(int af, const void* src, char* dst, size_t size) {
+  uv_inet_ntop(af, src, dst, size);
+  return dst;
+}
+
+#endif /* GRPC_UV */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_windows.cc
new file mode 100644
index 0000000..9137ab9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_utils_windows.cc	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINDOWS_SOCKETUTILS
+
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <grpc/support/log.h>
+
+uint16_t grpc_htons(uint16_t hostshort) { return htons(hostshort); }
+
+uint16_t grpc_ntohs(uint16_t netshort) { return ntohs(netshort); }
+
+uint32_t grpc_htonl(uint32_t hostlong) { return htonl(hostlong); }
+
+uint32_t grpc_ntohl(uint32_t netlong) { return ntohl(netlong); }
+
+int grpc_inet_pton(int af, const char* src, void* dst) {
+  return inet_pton(af, src, dst);
+}
+
+const char* grpc_inet_ntop(int af, const void* src, char* dst, size_t size) {
+  /* Windows InetNtopA wants a mutable ip pointer */
+  return InetNtopA(af, (void*)src, dst, size);
+}
+
+#endif /* GRPC_WINDOWS_SOCKETUTILS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.cc
new file mode 100644
index 0000000..2890866
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.cc	
@@ -0,0 +1,203 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <winsock2.h>
+
+// must be included after winsock2.h
+#include <mswsock.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+static DWORD s_wsa_socket_flags;
+
+grpc_winsocket* grpc_winsocket_create(SOCKET socket, const char* name) {
+  char* final_name;
+  grpc_winsocket* r = (grpc_winsocket*)gpr_malloc(sizeof(grpc_winsocket));
+  memset(r, 0, sizeof(grpc_winsocket));
+  r->socket = socket;
+  gpr_mu_init(&r->state_mu);
+  gpr_asprintf(&final_name, "%s:socket=0x%p", name, r);
+  grpc_iomgr_register_object(&r->iomgr_object, final_name);
+  gpr_free(final_name);
+  grpc_iocp_add_socket(r);
+  return r;
+}
+
+SOCKET grpc_winsocket_wrapped_socket(grpc_winsocket* socket) {
+  return socket->socket;
+}
+
+/* Schedule a shutdown of the socket operations. Will call the pending
+   operations to abort them. We need to do that this way because of the
+   various callsites of that function, which happens to be in various
+   mutex hold states, and that'd be unsafe to call them directly. */
+void grpc_winsocket_shutdown(grpc_winsocket* winsocket) {
+  /* Grab the function pointer for DisconnectEx for that specific socket.
+     It may change depending on the interface. */
+  int status;
+  GUID guid = WSAID_DISCONNECTEX;
+  LPFN_DISCONNECTEX DisconnectEx;
+  DWORD ioctl_num_bytes;
+
+  gpr_mu_lock(&winsocket->state_mu);
+  if (winsocket->shutdown_called) {
+    gpr_mu_unlock(&winsocket->state_mu);
+    return;
+  }
+  winsocket->shutdown_called = true;
+  gpr_mu_unlock(&winsocket->state_mu);
+
+  status = WSAIoctl(winsocket->socket, SIO_GET_EXTENSION_FUNCTION_POINTER,
+                    &guid, sizeof(guid), &DisconnectEx, sizeof(DisconnectEx),
+                    &ioctl_num_bytes, NULL, NULL);
+
+  if (status == 0) {
+    DisconnectEx(winsocket->socket, NULL, 0, 0);
+  } else {
+    char* utf8_message = gpr_format_message(WSAGetLastError());
+    gpr_log(GPR_INFO, "Unable to retrieve DisconnectEx pointer : %s",
+            utf8_message);
+    gpr_free(utf8_message);
+  }
+  closesocket(winsocket->socket);
+}
+
+static void destroy(grpc_winsocket* winsocket) {
+  grpc_iomgr_unregister_object(&winsocket->iomgr_object);
+  gpr_mu_destroy(&winsocket->state_mu);
+  gpr_free(winsocket);
+}
+
+static bool check_destroyable(grpc_winsocket* winsocket) {
+  return winsocket->destroy_called == true &&
+         winsocket->write_info.closure == NULL &&
+         winsocket->read_info.closure == NULL;
+}
+
+void grpc_winsocket_destroy(grpc_winsocket* winsocket) {
+  gpr_mu_lock(&winsocket->state_mu);
+  GPR_ASSERT(!winsocket->destroy_called);
+  winsocket->destroy_called = true;
+  bool should_destroy = check_destroyable(winsocket);
+  gpr_mu_unlock(&winsocket->state_mu);
+  if (should_destroy) destroy(winsocket);
+}
+
+/* Calling notify_on_read or write means either of two things:
+-) The IOCP already completed in the background, and we need to call
+the callback now.
+-) The IOCP hasn't completed yet, and we're queuing it for later. */
+static void socket_notify_on_iocp(grpc_winsocket* socket, grpc_closure* closure,
+                                  grpc_winsocket_callback_info* info) {
+  GPR_ASSERT(info->closure == NULL);
+  gpr_mu_lock(&socket->state_mu);
+  if (info->has_pending_iocp) {
+    info->has_pending_iocp = 0;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+  } else {
+    info->closure = closure;
+  }
+  gpr_mu_unlock(&socket->state_mu);
+}
+
+void grpc_socket_notify_on_write(grpc_winsocket* socket,
+                                 grpc_closure* closure) {
+  socket_notify_on_iocp(socket, closure, &socket->write_info);
+}
+
+void grpc_socket_notify_on_read(grpc_winsocket* socket, grpc_closure* closure) {
+  socket_notify_on_iocp(socket, closure, &socket->read_info);
+}
+
+void grpc_socket_become_ready(grpc_winsocket* socket,
+                              grpc_winsocket_callback_info* info) {
+  GPR_ASSERT(!info->has_pending_iocp);
+  gpr_mu_lock(&socket->state_mu);
+  if (info->closure) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, info->closure, GRPC_ERROR_NONE);
+    info->closure = NULL;
+  } else {
+    info->has_pending_iocp = 1;
+  }
+  bool should_destroy = check_destroyable(socket);
+  gpr_mu_unlock(&socket->state_mu);
+  if (should_destroy) destroy(socket);
+}
+
+static gpr_once g_probe_ipv6_once = GPR_ONCE_INIT;
+static bool g_ipv6_loopback_available = false;
+
+static void probe_ipv6_once(void) {
+  SOCKET s = socket(AF_INET6, SOCK_STREAM, 0);
+  g_ipv6_loopback_available = 0;
+  if (s == INVALID_SOCKET) {
+    gpr_log(GPR_INFO, "Disabling AF_INET6 sockets because socket() failed.");
+  } else {
+    grpc_sockaddr_in6 addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.sin6_family = AF_INET6;
+    addr.sin6_addr.s6_addr[15] = 1; /* [::1]:0 */
+    if (bind(s, reinterpret_cast<grpc_sockaddr*>(&addr), sizeof(addr)) == 0) {
+      g_ipv6_loopback_available = 1;
+    } else {
+      gpr_log(GPR_INFO,
+              "Disabling AF_INET6 sockets because ::1 is not available.");
+    }
+    closesocket(s);
+  }
+}
+
+int grpc_ipv6_loopback_available(void) {
+  gpr_once_init(&g_probe_ipv6_once, probe_ipv6_once);
+  return g_ipv6_loopback_available;
+}
+
+DWORD grpc_get_default_wsa_socket_flags() { return s_wsa_socket_flags; }
+
+void grpc_wsa_socket_flags_init() {
+  s_wsa_socket_flags = WSA_FLAG_OVERLAPPED;
+  /* WSA_FLAG_NO_HANDLE_INHERIT may be not supported on the older Windows
+     versions, see
+     https://msdn.microsoft.com/en-us/library/windows/desktop/ms742212(v=vs.85).aspx
+     for details. */
+  SOCKET sock = WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                          s_wsa_socket_flags | WSA_FLAG_NO_HANDLE_INHERIT);
+  if (sock != INVALID_SOCKET) {
+    /* Windows 7, Windows 2008 R2 with SP1 or later */
+    s_wsa_socket_flags |= WSA_FLAG_NO_HANDLE_INHERIT;
+    closesocket(sock);
+  }
+}
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.h
new file mode 100644
index 0000000..78f7945
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/socket_windows.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include <winsock2.h>
+
+#include <grpc/support/atm.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+
+#ifndef WSA_FLAG_NO_HANDLE_INHERIT
+#define WSA_FLAG_NO_HANDLE_INHERIT 0x80
+#endif
+
+/* This holds the data for an outstanding read or write on a socket.
+   The mutex to protect the concurrent access to that data is the one
+   inside the winsocket wrapper. */
+typedef struct grpc_winsocket_callback_info {
+  /* This is supposed to be a WSAOVERLAPPED, but in order to get that
+     definition, we need to include ws2tcpip.h, which needs to be included
+     from the top, otherwise it'll clash with a previous inclusion of
+     windows.h that in turns includes winsock.h. If anyone knows a way
+     to do it properly, feel free to send a patch. */
+  OVERLAPPED overlapped;
+  /* The callback information for the pending operation. May be empty if the
+     caller hasn't registered a callback yet. */
+  grpc_closure* closure;
+  /* A boolean to describe if the IO Completion Port got a notification for
+     that operation. This will happen if the operation completed before the
+     called had time to register a callback. We could avoid that behavior
+     altogether by forcing the caller to always register its callback before
+     proceeding queue an operation, but it is frequent for an IO Completion
+     Port to trigger quickly. This way we avoid a context switch for calling
+     the callback. We also simplify the read / write operations to avoid having
+     to hold a mutex for a long amount of time. */
+  int has_pending_iocp;
+  /* The results of the overlapped operation. */
+  DWORD bytes_transferred;
+  int wsa_error;
+} grpc_winsocket_callback_info;
+
+/* This is a wrapper to a Windows socket. A socket can have one outstanding
+   read, and one outstanding write. Doing an asynchronous accept means waiting
+   for a read operation. Doing an asynchronous connect means waiting for a
+   write operation. These are completely arbitrary ties between the operation
+   and the kind of event, because we can have one overlapped per pending
+   operation, whichever its nature is. So we could have more dedicated pending
+   operation callbacks for connect and listen. But given the scope of listen
+   and accept, we don't need to go to that extent and waste memory. Also, this
+   is closer to what happens in posix world. */
+typedef struct grpc_winsocket {
+  SOCKET socket;
+  bool destroy_called;
+
+  grpc_winsocket_callback_info write_info;
+  grpc_winsocket_callback_info read_info;
+
+  gpr_mu state_mu;
+  bool shutdown_called;
+
+  /* You can't add the same socket twice to the same IO Completion Port.
+     This prevents that. */
+  int added_to_iocp;
+
+  grpc_closure shutdown_closure;
+
+  /* A label for iomgr to track outstanding objects */
+  grpc_iomgr_object iomgr_object;
+} grpc_winsocket;
+
+/* Create a wrapped windows handle. This takes ownership of it, meaning that
+   it will be responsible for closing it. */
+grpc_winsocket* grpc_winsocket_create(SOCKET socket, const char* name);
+
+SOCKET grpc_winsocket_wrapped_socket(grpc_winsocket* socket);
+
+/* Initiate an asynchronous shutdown of the socket. Will call off any pending
+   operation to cancel them. */
+void grpc_winsocket_shutdown(grpc_winsocket* socket);
+
+/* Destroy a socket. Should only be called if there's no pending operation. */
+void grpc_winsocket_destroy(grpc_winsocket* socket);
+
+void grpc_socket_notify_on_write(grpc_winsocket* winsocket,
+                                 grpc_closure* closure);
+
+void grpc_socket_notify_on_read(grpc_winsocket* winsocket,
+                                grpc_closure* closure);
+
+void grpc_socket_become_ready(grpc_winsocket* winsocket,
+                              grpc_winsocket_callback_info* ci);
+
+/* Returns true if this system can create AF_INET6 sockets bound to ::1.
+   The value is probed once, and cached for the life of the process. */
+int grpc_ipv6_loopback_available(void);
+
+void grpc_wsa_socket_flags_init();
+
+DWORD grpc_get_default_wsa_socket_flags();
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sys_epoll_wrapper.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sys_epoll_wrapper.h
new file mode 100644
index 0000000..d21d853
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/sys_epoll_wrapper.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H
+#define GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <sys/epoll.h>
+
+#ifndef EPOLLEXCLUSIVE
+#define EPOLLEXCLUSIVE (1 << 28)
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SYS_EPOLL_WRAPPER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.cc
new file mode 100644
index 0000000..6c0ba40
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/tcp_client.h"
+
+grpc_tcp_client_vtable* grpc_tcp_client_impl;
+
+void grpc_tcp_client_connect(grpc_closure* closure, grpc_endpoint** ep,
+                             grpc_pollset_set* interested_parties,
+                             const grpc_channel_args* channel_args,
+                             const grpc_resolved_address* addr,
+                             grpc_millis deadline) {
+  grpc_tcp_client_impl->connect(closure, ep, interested_parties, channel_args,
+                                addr, deadline);
+}
+
+void grpc_set_tcp_client_impl(grpc_tcp_client_vtable* impl) {
+  grpc_tcp_client_impl = impl;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.h
new file mode 100644
index 0000000..d209eeb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+typedef struct grpc_tcp_client_vtable {
+  void (*connect)(grpc_closure* on_connect, grpc_endpoint** endpoint,
+                  grpc_pollset_set* interested_parties,
+                  const grpc_channel_args* channel_args,
+                  const grpc_resolved_address* addr, grpc_millis deadline);
+} grpc_tcp_client_vtable;
+
+/* Asynchronously connect to an address (specified as (addr, len)), and call
+   cb with arg and the completed connection when done (or call cb with arg and
+   NULL on failure).
+   interested_parties points to a set of pollsets that would be interested
+   in this connection being established (in order to continue their work) */
+void grpc_tcp_client_connect(grpc_closure* on_connect, grpc_endpoint** endpoint,
+                             grpc_pollset_set* interested_parties,
+                             const grpc_channel_args* channel_args,
+                             const grpc_resolved_address* addr,
+                             grpc_millis deadline);
+
+void grpc_tcp_client_global_init();
+
+void grpc_set_tcp_client_impl(grpc_tcp_client_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_cfstream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_cfstream.cc
new file mode 100644
index 0000000..23d8c0c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_cfstream.cc	
@@ -0,0 +1,217 @@
+
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_CFSTREAM_CLIENT
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include <netinet/in.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/iomgr/cfstream_handle.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint_cfstream.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/error_cfstream.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/timer.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+typedef struct CFStreamConnect {
+  gpr_mu mu;
+  gpr_refcount refcount;
+
+  CFReadStreamRef read_stream;
+  CFWriteStreamRef write_stream;
+  CFStreamHandle* stream_handle;
+
+  grpc_timer alarm;
+  grpc_closure on_alarm;
+  grpc_closure on_open;
+
+  bool read_stream_open;
+  bool write_stream_open;
+  bool failed;
+
+  grpc_closure* closure;
+  grpc_endpoint** endpoint;
+  int refs;
+  char* addr_name;
+  grpc_resource_quota* resource_quota;
+} CFStreamConnect;
+
+static void CFStreamConnectCleanup(CFStreamConnect* connect) {
+  grpc_resource_quota_unref_internal(connect->resource_quota);
+  CFSTREAM_HANDLE_UNREF(connect->stream_handle, "async connect clean up");
+  CFRelease(connect->read_stream);
+  CFRelease(connect->write_stream);
+  gpr_mu_destroy(&connect->mu);
+  gpr_free(connect->addr_name);
+  gpr_free(connect);
+}
+
+static void OnAlarm(void* arg, grpc_error* error) {
+  CFStreamConnect* connect = static_cast<CFStreamConnect*>(arg);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CLIENT_CONNECT :%p OnAlarm, error:%p", connect, error);
+  }
+  gpr_mu_lock(&connect->mu);
+  grpc_closure* closure = connect->closure;
+  connect->closure = nil;
+  const bool done = (--connect->refs == 0);
+  gpr_mu_unlock(&connect->mu);
+  // Only schedule a callback once, by either OnAlarm or OnOpen. The
+  // first one issues callback while the second one does cleanup.
+  if (done) {
+    CFStreamConnectCleanup(connect);
+  } else {
+    grpc_error* error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("connect() timed out");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+  }
+}
+
+static void OnOpen(void* arg, grpc_error* error) {
+  CFStreamConnect* connect = static_cast<CFStreamConnect*>(arg);
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CLIENT_CONNECT :%p OnOpen, error:%p", connect, error);
+  }
+  gpr_mu_lock(&connect->mu);
+  grpc_timer_cancel(&connect->alarm);
+  grpc_closure* closure = connect->closure;
+  connect->closure = nil;
+
+  bool done = (--connect->refs == 0);
+  grpc_endpoint** endpoint = connect->endpoint;
+
+  // Only schedule a callback once, by either OnAlarm or OnOpen. The
+  // first one issues callback while the second one does cleanup.
+  if (done) {
+    gpr_mu_unlock(&connect->mu);
+    CFStreamConnectCleanup(connect);
+  } else {
+    if (error == GRPC_ERROR_NONE) {
+      CFErrorRef stream_error = CFReadStreamCopyError(connect->read_stream);
+      if (stream_error == NULL) {
+        stream_error = CFWriteStreamCopyError(connect->write_stream);
+      }
+      if (stream_error) {
+        error = GRPC_ERROR_CREATE_FROM_CFERROR(stream_error, "connect() error");
+        CFRelease(stream_error);
+      }
+      if (error == GRPC_ERROR_NONE) {
+        *endpoint = grpc_cfstream_endpoint_create(
+            connect->read_stream, connect->write_stream, connect->addr_name,
+            connect->resource_quota, connect->stream_handle);
+      }
+    } else {
+      GRPC_ERROR_REF(error);
+    }
+    gpr_mu_unlock(&connect->mu);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+  }
+}
+
+static void ParseResolvedAddress(const grpc_resolved_address* addr,
+                                 CFStringRef* host, int* port) {
+  char* host_port;
+  grpc_sockaddr_to_string(&host_port, addr, 1);
+  grpc_core::UniquePtr<char> host_string;
+  grpc_core::UniquePtr<char> port_string;
+  grpc_core::SplitHostPort(host_port, &host_string, &port_string);
+  *host =
+      CFStringCreateWithCString(NULL, host_string.get(), kCFStringEncodingUTF8);
+  gpr_free(host_port);
+  *port = grpc_sockaddr_get_port(addr);
+}
+
+static void CFStreamClientConnect(grpc_closure* closure, grpc_endpoint** ep,
+                                  grpc_pollset_set* interested_parties,
+                                  const grpc_channel_args* channel_args,
+                                  const grpc_resolved_address* resolved_addr,
+                                  grpc_millis deadline) {
+  CFStreamConnect* connect;
+
+  connect = (CFStreamConnect*)gpr_zalloc(sizeof(CFStreamConnect));
+  connect->closure = closure;
+  connect->endpoint = ep;
+  connect->addr_name = grpc_sockaddr_to_uri(resolved_addr);
+  // connect->resource_quota = resource_quota;
+  connect->refs = 2;  // One for the connect operation, one for the timer.
+  gpr_ref_init(&connect->refcount, 1);
+  gpr_mu_init(&connect->mu);
+
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %p, %s: asynchronously connecting",
+            connect, connect->addr_name);
+  }
+
+  grpc_resource_quota* resource_quota = grpc_resource_quota_create(NULL);
+  if (channel_args != NULL) {
+    for (size_t i = 0; i < channel_args->num_args; i++) {
+      if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
+        grpc_resource_quota_unref_internal(resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
+            (grpc_resource_quota*)channel_args->args[i].value.pointer.p);
+      }
+    }
+  }
+  connect->resource_quota = resource_quota;
+
+  CFReadStreamRef read_stream;
+  CFWriteStreamRef write_stream;
+
+  CFStringRef host;
+  int port;
+  ParseResolvedAddress(resolved_addr, &host, &port);
+  CFStreamCreatePairWithSocketToHost(NULL, host, port, &read_stream,
+                                     &write_stream);
+  CFRelease(host);
+  connect->read_stream = read_stream;
+  connect->write_stream = write_stream;
+  connect->stream_handle =
+      CFStreamHandle::CreateStreamHandle(read_stream, write_stream);
+  GRPC_CLOSURE_INIT(&connect->on_open, OnOpen, static_cast<void*>(connect),
+                    grpc_schedule_on_exec_ctx);
+  connect->stream_handle->NotifyOnOpen(&connect->on_open);
+  GRPC_CLOSURE_INIT(&connect->on_alarm, OnAlarm, connect,
+                    grpc_schedule_on_exec_ctx);
+  gpr_mu_lock(&connect->mu);
+  CFReadStreamOpen(read_stream);
+  CFWriteStreamOpen(write_stream);
+  grpc_timer_init(&connect->alarm, deadline, &connect->on_alarm);
+  gpr_mu_unlock(&connect->mu);
+}
+
+grpc_tcp_client_vtable grpc_cfstream_client_vtable = {CFStreamClientConnect};
+
+#endif /* GRPC_CFSTREAM_CLIENT */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_custom.cc
new file mode 100644
index 0000000..0295d44
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_custom.cc	
@@ -0,0 +1,163 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/timer.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+extern grpc_socket_vtable* grpc_custom_socket_vtable;
+
+struct grpc_custom_tcp_connect {
+  grpc_custom_socket* socket;
+  grpc_timer alarm;
+  grpc_closure on_alarm;
+  grpc_closure* closure;
+  grpc_endpoint** endpoint;
+  int refs;
+  char* addr_name;
+  grpc_resource_quota* resource_quota;
+};
+
+static void custom_tcp_connect_cleanup(grpc_custom_tcp_connect* connect) {
+  grpc_custom_socket* socket = connect->socket;
+  grpc_resource_quota_unref_internal(connect->resource_quota);
+  gpr_free(connect->addr_name);
+  gpr_free(connect);
+  socket->refs--;
+  if (socket->refs == 0) {
+    grpc_custom_socket_vtable->destroy(socket);
+    gpr_free(socket);
+  }
+}
+
+static void custom_close_callback(grpc_custom_socket* /*socket*/) {}
+
+static void on_alarm(void* acp, grpc_error* error) {
+  int done;
+  grpc_custom_socket* socket = (grpc_custom_socket*)acp;
+  grpc_custom_tcp_connect* connect = socket->connector;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "CLIENT_CONNECT: %s: on_alarm: error=%s",
+            connect->addr_name, str);
+  }
+  if (error == GRPC_ERROR_NONE) {
+    /* error == NONE implies that the timer ran out, and wasn't cancelled. If
+       it was cancelled, then the handler that cancelled it also should close
+       the handle, if applicable */
+    grpc_custom_socket_vtable->close(socket, custom_close_callback);
+  }
+  done = (--connect->refs == 0);
+  if (done) {
+    custom_tcp_connect_cleanup(connect);
+  }
+}
+
+static void custom_connect_callback_internal(grpc_custom_socket* socket,
+                                             grpc_error* error) {
+  grpc_custom_tcp_connect* connect = socket->connector;
+  int done;
+  grpc_closure* closure = connect->closure;
+  grpc_timer_cancel(&connect->alarm);
+  if (error == GRPC_ERROR_NONE) {
+    *connect->endpoint = custom_tcp_endpoint_create(
+        socket, connect->resource_quota, connect->addr_name);
+  }
+  done = (--connect->refs == 0);
+  if (done) {
+    grpc_core::ExecCtx::Get()->Flush();
+    custom_tcp_connect_cleanup(connect);
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+}
+
+static void custom_connect_callback(grpc_custom_socket* socket,
+                                    grpc_error* error) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  if (grpc_core::ExecCtx::Get() == nullptr) {
+    /* If we are being run on a thread which does not have an exec_ctx created
+     * yet, we should create one. */
+    grpc_core::ExecCtx exec_ctx;
+    custom_connect_callback_internal(socket, error);
+  } else {
+    custom_connect_callback_internal(socket, error);
+  }
+}
+
+static void tcp_connect(grpc_closure* closure, grpc_endpoint** ep,
+                        grpc_pollset_set* interested_parties,
+                        const grpc_channel_args* channel_args,
+                        const grpc_resolved_address* resolved_addr,
+                        grpc_millis deadline) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  (void)channel_args;
+  (void)interested_parties;
+  grpc_custom_tcp_connect* connect;
+  grpc_resource_quota* resource_quota = grpc_resource_quota_create(nullptr);
+  if (channel_args != nullptr) {
+    for (size_t i = 0; i < channel_args->num_args; i++) {
+      if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
+        grpc_resource_quota_unref_internal(resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
+            (grpc_resource_quota*)channel_args->args[i].value.pointer.p);
+      }
+    }
+  }
+  grpc_custom_socket* socket =
+      (grpc_custom_socket*)gpr_malloc(sizeof(grpc_custom_socket));
+  socket->refs = 2;
+  grpc_custom_socket_vtable->init(socket, GRPC_AF_UNSPEC);
+  connect =
+      (grpc_custom_tcp_connect*)gpr_malloc(sizeof(grpc_custom_tcp_connect));
+  connect->closure = closure;
+  connect->endpoint = ep;
+  connect->addr_name = grpc_sockaddr_to_uri(resolved_addr);
+  connect->resource_quota = resource_quota;
+  connect->socket = socket;
+  socket->connector = connect;
+  socket->endpoint = nullptr;
+  socket->listener = nullptr;
+  connect->refs = 2;
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "CLIENT_CONNECT: %p %s: asynchronously connecting",
+            socket, connect->addr_name);
+  }
+
+  GRPC_CLOSURE_INIT(&connect->on_alarm, on_alarm, socket,
+                    grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&connect->alarm, deadline, &connect->on_alarm);
+  grpc_custom_socket_vtable->connect(
+      socket, (const grpc_sockaddr*)resolved_addr->addr, resolved_addr->len,
+      custom_connect_callback);
+}
+
+grpc_tcp_client_vtable custom_tcp_client_vtable = {tcp_connect};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.cc
new file mode 100644
index 0000000..928c70d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.cc	
@@ -0,0 +1,357 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP_CLIENT
+
+#include "src/core/lib/iomgr/tcp_client_posix.h"
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_posix.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_mutator.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+typedef struct {
+  gpr_mu mu;
+  grpc_fd* fd;
+  grpc_timer alarm;
+  grpc_closure on_alarm;
+  int refs;
+  grpc_closure write_closure;
+  grpc_pollset_set* interested_parties;
+  char* addr_str;
+  grpc_endpoint** ep;
+  grpc_closure* closure;
+  grpc_channel_args* channel_args;
+} async_connect;
+
+static grpc_error* prepare_socket(const grpc_resolved_address* addr, int fd,
+                                  const grpc_channel_args* channel_args) {
+  grpc_error* err = GRPC_ERROR_NONE;
+
+  GPR_ASSERT(fd >= 0);
+
+  err = grpc_set_socket_nonblocking(fd, 1);
+  if (err != GRPC_ERROR_NONE) goto error;
+  err = grpc_set_socket_cloexec(fd, 1);
+  if (err != GRPC_ERROR_NONE) goto error;
+  if (!grpc_is_unix_socket(addr)) {
+    err = grpc_set_socket_low_latency(fd, 1);
+    if (err != GRPC_ERROR_NONE) goto error;
+    err = grpc_set_socket_reuse_addr(fd, 1);
+    if (err != GRPC_ERROR_NONE) goto error;
+    err = grpc_set_socket_tcp_user_timeout(fd, channel_args,
+                                           true /* is_client */);
+    if (err != GRPC_ERROR_NONE) goto error;
+  }
+  err = grpc_set_socket_no_sigpipe_if_possible(fd);
+  if (err != GRPC_ERROR_NONE) goto error;
+
+  err = grpc_apply_socket_mutator_in_args(fd, channel_args);
+  if (err != GRPC_ERROR_NONE) goto error;
+
+  goto done;
+
+error:
+  if (fd >= 0) {
+    close(fd);
+  }
+done:
+  return err;
+}
+
+static void tc_on_alarm(void* acp, grpc_error* error) {
+  int done;
+  async_connect* ac = static_cast<async_connect*>(acp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "CLIENT_CONNECT: %s: on_alarm: error=%s", ac->addr_str,
+            str);
+  }
+  gpr_mu_lock(&ac->mu);
+  if (ac->fd != nullptr) {
+    grpc_fd_shutdown(
+        ac->fd, GRPC_ERROR_CREATE_FROM_STATIC_STRING("connect() timed out"));
+  }
+  done = (--ac->refs == 0);
+  gpr_mu_unlock(&ac->mu);
+  if (done) {
+    gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_str);
+    grpc_channel_args_destroy(ac->channel_args);
+    gpr_free(ac);
+  }
+}
+
+grpc_endpoint* grpc_tcp_client_create_from_fd(
+    grpc_fd* fd, const grpc_channel_args* channel_args, const char* addr_str) {
+  return grpc_tcp_create(fd, channel_args, addr_str);
+}
+
+static void on_writable(void* acp, grpc_error* error) {
+  async_connect* ac = static_cast<async_connect*>(acp);
+  int so_error = 0;
+  socklen_t so_error_size;
+  int err;
+  int done;
+  grpc_endpoint** ep = ac->ep;
+  grpc_closure* closure = ac->closure;
+  grpc_fd* fd;
+
+  GRPC_ERROR_REF(error);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "CLIENT_CONNECT: %s: on_writable: error=%s", ac->addr_str,
+            str);
+  }
+
+  gpr_mu_lock(&ac->mu);
+  GPR_ASSERT(ac->fd);
+  fd = ac->fd;
+  ac->fd = nullptr;
+  gpr_mu_unlock(&ac->mu);
+
+  grpc_timer_cancel(&ac->alarm);
+
+  gpr_mu_lock(&ac->mu);
+  if (error != GRPC_ERROR_NONE) {
+    error =
+        grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
+                           grpc_slice_from_static_string("Timeout occurred"));
+    goto finish;
+  }
+
+  do {
+    so_error_size = sizeof(so_error);
+    err = getsockopt(grpc_fd_wrapped_fd(fd), SOL_SOCKET, SO_ERROR, &so_error,
+                     &so_error_size);
+  } while (err < 0 && errno == EINTR);
+  if (err < 0) {
+    error = GRPC_OS_ERROR(errno, "getsockopt");
+    goto finish;
+  }
+
+  switch (so_error) {
+    case 0:
+      grpc_pollset_set_del_fd(ac->interested_parties, fd);
+      *ep = grpc_tcp_client_create_from_fd(fd, ac->channel_args, ac->addr_str);
+      fd = nullptr;
+      break;
+    case ENOBUFS:
+      /* We will get one of these errors if we have run out of
+         memory in the kernel for the data structures allocated
+         when you connect a socket.  If this happens it is very
+         likely that if we wait a little bit then try again the
+         connection will work (since other programs or this
+         program will close their network connections and free up
+         memory).  This does _not_ indicate that there is anything
+         wrong with the server we are connecting to, this is a
+         local problem.
+
+         If you are looking at this code, then chances are that
+         your program or another program on the same computer
+         opened too many network connections.  The "easy" fix:
+         don't do that! */
+      gpr_log(GPR_ERROR, "kernel out of buffers");
+      gpr_mu_unlock(&ac->mu);
+      grpc_fd_notify_on_write(fd, &ac->write_closure);
+      return;
+    case ECONNREFUSED:
+      /* This error shouldn't happen for anything other than connect(). */
+      error = GRPC_OS_ERROR(so_error, "connect");
+      break;
+    default:
+      /* We don't really know which syscall triggered the problem here,
+         so punt by reporting getsockopt(). */
+      error = GRPC_OS_ERROR(so_error, "getsockopt(SO_ERROR)");
+      break;
+  }
+
+finish:
+  if (fd != nullptr) {
+    grpc_pollset_set_del_fd(ac->interested_parties, fd);
+    grpc_fd_orphan(fd, nullptr, nullptr, "tcp_client_orphan");
+    fd = nullptr;
+  }
+  done = (--ac->refs == 0);
+  // Create a copy of the data from "ac" to be accessed after the unlock, as
+  // "ac" and its contents may be deallocated by the time they are read.
+  const grpc_slice addr_str_slice = grpc_slice_from_copied_string(ac->addr_str);
+  gpr_mu_unlock(&ac->mu);
+  if (error != GRPC_ERROR_NONE) {
+    char* error_descr;
+    grpc_slice str;
+    bool ret = grpc_error_get_str(error, GRPC_ERROR_STR_DESCRIPTION, &str);
+    GPR_ASSERT(ret);
+    char* desc = grpc_slice_to_c_string(str);
+    gpr_asprintf(&error_descr, "Failed to connect to remote host: %s", desc);
+    error = grpc_error_set_str(error, GRPC_ERROR_STR_DESCRIPTION,
+                               grpc_slice_from_copied_string(error_descr));
+    gpr_free(error_descr);
+    gpr_free(desc);
+    error = grpc_error_set_str(error, GRPC_ERROR_STR_TARGET_ADDRESS,
+                               addr_str_slice /* takes ownership */);
+  } else {
+    grpc_slice_unref_internal(addr_str_slice);
+  }
+  if (done) {
+    // This is safe even outside the lock, because "done", the sentinel, is
+    // populated *inside* the lock.
+    gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_str);
+    grpc_channel_args_destroy(ac->channel_args);
+    gpr_free(ac);
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+}
+
+grpc_error* grpc_tcp_client_prepare_fd(const grpc_channel_args* channel_args,
+                                       const grpc_resolved_address* addr,
+                                       grpc_resolved_address* mapped_addr,
+                                       int* fd) {
+  grpc_dualstack_mode dsmode;
+  grpc_error* error;
+  *fd = -1;
+  /* Use dualstack sockets where available. Set mapped to v6 or v4 mapped to
+     v6. */
+  if (!grpc_sockaddr_to_v4mapped(addr, mapped_addr)) {
+    /* addr is v4 mapped to v6 or v6. */
+    memcpy(mapped_addr, addr, sizeof(*mapped_addr));
+  }
+  error =
+      grpc_create_dualstack_socket(mapped_addr, SOCK_STREAM, 0, &dsmode, fd);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+  if (dsmode == GRPC_DSMODE_IPV4) {
+    /* Original addr is either v4 or v4 mapped to v6. Set mapped_addr to v4. */
+    if (!grpc_sockaddr_is_v4mapped(addr, mapped_addr)) {
+      memcpy(mapped_addr, addr, sizeof(*mapped_addr));
+    }
+  }
+  if ((error = prepare_socket(mapped_addr, *fd, channel_args)) !=
+      GRPC_ERROR_NONE) {
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_tcp_client_create_from_prepared_fd(
+    grpc_pollset_set* interested_parties, grpc_closure* closure, const int fd,
+    const grpc_channel_args* channel_args, const grpc_resolved_address* addr,
+    grpc_millis deadline, grpc_endpoint** ep) {
+  int err;
+  async_connect* ac;
+  do {
+    err = connect(fd, reinterpret_cast<const grpc_sockaddr*>(addr->addr),
+                  addr->len);
+  } while (err < 0 && errno == EINTR);
+
+  char* name;
+  char* addr_str;
+  addr_str = grpc_sockaddr_to_uri(addr);
+  gpr_asprintf(&name, "tcp-client:%s", addr_str);
+  grpc_fd* fdobj = grpc_fd_create(fd, name, true);
+  gpr_free(name);
+  gpr_free(addr_str);
+
+  if (err >= 0) {
+    char* addr_str = grpc_sockaddr_to_uri(addr);
+    *ep = grpc_tcp_client_create_from_fd(fdobj, channel_args, addr_str);
+    gpr_free(addr_str);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+    return;
+  }
+  if (errno != EWOULDBLOCK && errno != EINPROGRESS) {
+    grpc_fd_orphan(fdobj, nullptr, nullptr, "tcp_client_connect_error");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure,
+                            GRPC_OS_ERROR(errno, "connect"));
+    return;
+  }
+
+  grpc_pollset_set_add_fd(interested_parties, fdobj);
+
+  ac = static_cast<async_connect*>(gpr_malloc(sizeof(async_connect)));
+  ac->closure = closure;
+  ac->ep = ep;
+  ac->fd = fdobj;
+  ac->interested_parties = interested_parties;
+  ac->addr_str = grpc_sockaddr_to_uri(addr);
+  gpr_mu_init(&ac->mu);
+  ac->refs = 2;
+  GRPC_CLOSURE_INIT(&ac->write_closure, on_writable, ac,
+                    grpc_schedule_on_exec_ctx);
+  ac->channel_args = grpc_channel_args_copy(channel_args);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "CLIENT_CONNECT: %s: asynchronously connecting fd %p",
+            ac->addr_str, fdobj);
+  }
+
+  gpr_mu_lock(&ac->mu);
+  GRPC_CLOSURE_INIT(&ac->on_alarm, tc_on_alarm, ac, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&ac->alarm, deadline, &ac->on_alarm);
+  grpc_fd_notify_on_write(ac->fd, &ac->write_closure);
+  gpr_mu_unlock(&ac->mu);
+}
+
+static void tcp_connect(grpc_closure* closure, grpc_endpoint** ep,
+                        grpc_pollset_set* interested_parties,
+                        const grpc_channel_args* channel_args,
+                        const grpc_resolved_address* addr,
+                        grpc_millis deadline) {
+  grpc_resolved_address mapped_addr;
+  int fd = -1;
+  grpc_error* error;
+  *ep = nullptr;
+  if ((error = grpc_tcp_client_prepare_fd(channel_args, addr, &mapped_addr,
+                                          &fd)) != GRPC_ERROR_NONE) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+    return;
+  }
+  grpc_tcp_client_create_from_prepared_fd(interested_parties, closure, fd,
+                                          channel_args, &mapped_addr, deadline,
+                                          ep);
+}
+
+grpc_tcp_client_vtable grpc_posix_tcp_client_vtable = {tcp_connect};
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.h
new file mode 100644
index 0000000..6f61866
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_posix.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+
+/* Create an endpoint from a connected grpc_fd.
+
+   fd: a connected FD. Ownership is taken.
+   channel_args: may contain custom settings for the endpoint
+   addr_str: destination address in printable format
+   Returns: a new endpoint
+*/
+grpc_endpoint* grpc_tcp_client_create_from_fd(
+    grpc_fd* fd, const grpc_channel_args* channel_args, const char* addr_str);
+
+/* Return a configured, unbound, unconnected TCP client fd.
+
+   channel_args: may contain custom settings for the fd
+   addr: the destination address
+   mapped_addr: out parameter. addr mapped to an address appropriate to the
+     type of socket FD created. For example, if addr is IPv4 and dual stack
+     sockets are available, mapped_addr will be an IPv4-mapped IPv6 address
+   fd: out parameter. The new FD
+   Returns: error, if any. Out parameters are not set on error
+*/
+grpc_error* grpc_tcp_client_prepare_fd(const grpc_channel_args* channel_args,
+                                       const grpc_resolved_address* addr,
+                                       grpc_resolved_address* mapped_addr,
+                                       int* fd);
+
+/* Connect a configured TCP client fd.
+
+   interested_parties: a set of pollsets that would be interested in this
+     connection being established (in order to continue their work
+   closure: called when complete. On success, *ep will be set.
+   fd: an FD returned from grpc_tcp_client_prepare_fd().
+   channel_args: may contain custom settings for the endpoint
+   deadline: connection deadline
+   ep: out parameter. Set before closure is called if successful
+*/
+void grpc_tcp_client_create_from_prepared_fd(
+    grpc_pollset_set* interested_parties, grpc_closure* closure, const int fd,
+    const grpc_channel_args* channel_args, const grpc_resolved_address* addr,
+    grpc_millis deadline, grpc_endpoint** ep);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CLIENT_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_windows.cc
new file mode 100644
index 0000000..5f32f5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_client_windows.cc	
@@ -0,0 +1,233 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <inttypes.h>
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct {
+  grpc_closure* on_done;
+  gpr_mu mu;
+  grpc_winsocket* socket;
+  grpc_timer alarm;
+  grpc_closure on_alarm;
+  char* addr_name;
+  int refs;
+  grpc_closure on_connect;
+  grpc_endpoint** endpoint;
+  grpc_channel_args* channel_args;
+} async_connect;
+
+static void async_connect_unlock_and_cleanup(async_connect* ac,
+                                             grpc_winsocket* socket) {
+  int done = (--ac->refs == 0);
+  gpr_mu_unlock(&ac->mu);
+  if (done) {
+    grpc_channel_args_destroy(ac->channel_args);
+    gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_name);
+    gpr_free(ac);
+  }
+  if (socket != NULL) grpc_winsocket_destroy(socket);
+}
+
+static void on_alarm(void* acp, grpc_error* error) {
+  async_connect* ac = (async_connect*)acp;
+  gpr_mu_lock(&ac->mu);
+  grpc_winsocket* socket = ac->socket;
+  ac->socket = NULL;
+  if (socket != NULL) {
+    grpc_winsocket_shutdown(socket);
+  }
+  async_connect_unlock_and_cleanup(ac, socket);
+}
+
+static void on_connect(void* acp, grpc_error* error) {
+  async_connect* ac = (async_connect*)acp;
+  grpc_endpoint** ep = ac->endpoint;
+  GPR_ASSERT(*ep == NULL);
+  grpc_closure* on_done = ac->on_done;
+
+  GRPC_ERROR_REF(error);
+
+  gpr_mu_lock(&ac->mu);
+  grpc_winsocket* socket = ac->socket;
+  ac->socket = NULL;
+  gpr_mu_unlock(&ac->mu);
+
+  grpc_timer_cancel(&ac->alarm);
+
+  gpr_mu_lock(&ac->mu);
+
+  if (error == GRPC_ERROR_NONE) {
+    if (socket != NULL) {
+      DWORD transfered_bytes = 0;
+      DWORD flags;
+      BOOL wsa_success =
+          WSAGetOverlappedResult(socket->socket, &socket->write_info.overlapped,
+                                 &transfered_bytes, FALSE, &flags);
+      GPR_ASSERT(transfered_bytes == 0);
+      if (!wsa_success) {
+        error = GRPC_WSA_ERROR(WSAGetLastError(), "ConnectEx");
+        closesocket(socket->socket);
+      } else {
+        *ep = grpc_tcp_create(socket, ac->channel_args, ac->addr_name);
+        socket = NULL;
+      }
+    } else {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("socket is null");
+    }
+  }
+
+  async_connect_unlock_and_cleanup(ac, socket);
+  /* If the connection was aborted, the callback was already called when
+     the deadline was met. */
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_done, error);
+}
+
+/* Tries to issue one async connection, then schedules both an IOCP
+   notification request for the connection, and one timeout alert. */
+static void tcp_connect(grpc_closure* on_done, grpc_endpoint** endpoint,
+                        grpc_pollset_set* interested_parties,
+                        const grpc_channel_args* channel_args,
+                        const grpc_resolved_address* addr,
+                        grpc_millis deadline) {
+  SOCKET sock = INVALID_SOCKET;
+  BOOL success;
+  int status;
+  grpc_resolved_address addr6_v4mapped;
+  grpc_resolved_address local_address;
+  async_connect* ac;
+  grpc_winsocket* socket = NULL;
+  LPFN_CONNECTEX ConnectEx;
+  GUID guid = WSAID_CONNECTEX;
+  DWORD ioctl_num_bytes;
+  grpc_winsocket_callback_info* info;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  *endpoint = NULL;
+
+  /* Use dualstack sockets where available. */
+  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
+    addr = &addr6_v4mapped;
+  }
+
+  sock = WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                   grpc_get_default_wsa_socket_flags());
+  if (sock == INVALID_SOCKET) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "WSASocket");
+    goto failure;
+  }
+
+  error = grpc_tcp_prepare_socket(sock);
+  if (error != GRPC_ERROR_NONE) {
+    goto failure;
+  }
+
+  /* Grab the function pointer for ConnectEx for that specific socket.
+     It may change depending on the interface. */
+  status =
+      WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid),
+               &ConnectEx, sizeof(ConnectEx), &ioctl_num_bytes, NULL, NULL);
+
+  if (status != 0) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(),
+                           "WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER)");
+    goto failure;
+  }
+
+  grpc_sockaddr_make_wildcard6(0, &local_address);
+
+  status =
+      bind(sock, (grpc_sockaddr*)&local_address.addr, (int)local_address.len);
+  if (status != 0) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "bind");
+    goto failure;
+  }
+
+  socket = grpc_winsocket_create(sock, "client");
+  info = &socket->write_info;
+  success = ConnectEx(sock, (grpc_sockaddr*)&addr->addr, (int)addr->len, NULL,
+                      0, NULL, &info->overlapped);
+
+  /* It wouldn't be unusual to get a success immediately. But we'll still get
+     an IOCP notification, so let's ignore it. */
+  if (!success) {
+    int last_error = WSAGetLastError();
+    if (last_error != ERROR_IO_PENDING) {
+      error = GRPC_WSA_ERROR(last_error, "ConnectEx");
+      goto failure;
+    }
+  }
+
+  ac = (async_connect*)gpr_malloc(sizeof(async_connect));
+  ac->on_done = on_done;
+  ac->socket = socket;
+  gpr_mu_init(&ac->mu);
+  ac->refs = 2;
+  ac->addr_name = grpc_sockaddr_to_uri(addr);
+  ac->endpoint = endpoint;
+  ac->channel_args = grpc_channel_args_copy(channel_args);
+  GRPC_CLOSURE_INIT(&ac->on_connect, on_connect, ac, grpc_schedule_on_exec_ctx);
+
+  GRPC_CLOSURE_INIT(&ac->on_alarm, on_alarm, ac, grpc_schedule_on_exec_ctx);
+  grpc_timer_init(&ac->alarm, deadline, &ac->on_alarm);
+  grpc_socket_notify_on_write(socket, &ac->on_connect);
+  return;
+
+failure:
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  char* target_uri = grpc_sockaddr_to_uri(addr);
+  grpc_error* final_error =
+      grpc_error_set_str(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                             "Failed to connect", &error, 1),
+                         GRPC_ERROR_STR_TARGET_ADDRESS,
+                         grpc_slice_from_copied_string(
+                             target_uri == nullptr ? "NULL" : target_uri));
+  GRPC_ERROR_UNREF(error);
+  if (socket != NULL) {
+    grpc_winsocket_destroy(socket);
+  } else if (sock != INVALID_SOCKET) {
+    closesocket(sock);
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_done, final_error);
+}
+
+grpc_tcp_client_vtable grpc_windows_tcp_client_vtable = {tcp_connect};
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.cc
new file mode 100644
index 0000000..9141c65
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.cc	
@@ -0,0 +1,371 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#define GRPC_TCP_DEFAULT_READ_SLICE_SIZE 8192
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+grpc_socket_vtable* grpc_custom_socket_vtable = nullptr;
+extern grpc_tcp_server_vtable custom_tcp_server_vtable;
+extern grpc_tcp_client_vtable custom_tcp_client_vtable;
+
+void grpc_custom_endpoint_init(grpc_socket_vtable* impl) {
+  grpc_custom_socket_vtable = impl;
+  grpc_set_tcp_client_impl(&custom_tcp_client_vtable);
+  grpc_set_tcp_server_impl(&custom_tcp_server_vtable);
+}
+
+typedef struct {
+  grpc_endpoint base;
+  gpr_refcount refcount;
+  grpc_custom_socket* socket;
+
+  grpc_closure* read_cb;
+  grpc_closure* write_cb;
+
+  grpc_slice_buffer* read_slices;
+  grpc_slice_buffer* write_slices;
+
+  grpc_resource_user* resource_user;
+  grpc_resource_user_slice_allocator slice_allocator;
+
+  bool shutting_down;
+
+  char* peer_string;
+} custom_tcp_endpoint;
+
+static void tcp_free(grpc_custom_socket* s) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)s->endpoint;
+  grpc_resource_user_unref(tcp->resource_user);
+  gpr_free(tcp->peer_string);
+  gpr_free(tcp);
+  s->refs--;
+  if (s->refs == 0) {
+    grpc_custom_socket_vtable->destroy(s);
+    gpr_free(s);
+  }
+}
+
+#ifndef NDEBUG
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp), (reason), __FILE__, __LINE__)
+#define TCP_REF(tcp, reason) tcp_ref((tcp), (reason), __FILE__, __LINE__)
+static void tcp_unref(custom_tcp_endpoint* tcp, const char* reason,
+                      const char* file, int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_ERROR,
+            "TCP unref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp->socket, reason,
+            val, val - 1);
+  }
+  if (gpr_unref(&tcp->refcount)) {
+    tcp_free(tcp->socket);
+  }
+}
+
+static void tcp_ref(custom_tcp_endpoint* tcp, const char* reason,
+                    const char* file, int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_ERROR,
+            "TCP   ref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp->socket, reason,
+            val, val + 1);
+  }
+  gpr_ref(&tcp->refcount);
+}
+#else
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp))
+#define TCP_REF(tcp, reason) tcp_ref((tcp))
+static void tcp_unref(custom_tcp_endpoint* tcp) {
+  if (gpr_unref(&tcp->refcount)) {
+    tcp_free(tcp->socket);
+  }
+}
+
+static void tcp_ref(custom_tcp_endpoint* tcp) { gpr_ref(&tcp->refcount); }
+#endif
+
+static void call_read_cb(custom_tcp_endpoint* tcp, grpc_error* error) {
+  grpc_closure* cb = tcp->read_cb;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p call_cb %p %p:%p", tcp->socket, cb, cb->cb,
+            cb->cb_arg);
+    size_t i;
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "read: error=%s", str);
+
+    for (i = 0; i < tcp->read_slices->count; i++) {
+      char* dump = grpc_dump_slice(tcp->read_slices->slices[i],
+                                   GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_INFO, "READ %p (peer=%s): %s", tcp, tcp->peer_string, dump);
+      gpr_free(dump);
+    }
+  }
+  TCP_UNREF(tcp, "read");
+  tcp->read_slices = nullptr;
+  tcp->read_cb = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+static void custom_read_callback(grpc_custom_socket* socket, size_t nread,
+                                 grpc_error* error) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_slice_buffer garbage;
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)socket->endpoint;
+  if (error == GRPC_ERROR_NONE && nread == 0) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("EOF");
+  }
+  if (error == GRPC_ERROR_NONE) {
+    // Successful read
+    if ((size_t)nread < tcp->read_slices->length) {
+      /* TODO(murgatroid99): Instead of discarding the unused part of the read
+       * buffer, reuse it as the next read buffer. */
+      grpc_slice_buffer_init(&garbage);
+      grpc_slice_buffer_trim_end(
+          tcp->read_slices, tcp->read_slices->length - (size_t)nread, &garbage);
+      grpc_slice_buffer_reset_and_unref_internal(&garbage);
+    }
+  } else {
+    grpc_slice_buffer_reset_and_unref_internal(tcp->read_slices);
+  }
+  call_read_cb(tcp, error);
+}
+
+static void tcp_read_allocation_done(void* tcpp, grpc_error* error) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)tcpp;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p read_allocation_done: %s", tcp->socket,
+            grpc_error_string(error));
+  }
+  if (error == GRPC_ERROR_NONE) {
+    /* Before calling read, we allocate a buffer with exactly one slice
+     * to tcp->read_slices and wait for the callback indicating that the
+     * allocation was successful. So slices[0] should always exist here */
+    char* buffer = (char*)GRPC_SLICE_START_PTR(tcp->read_slices->slices[0]);
+    size_t len = GRPC_SLICE_LENGTH(tcp->read_slices->slices[0]);
+    grpc_custom_socket_vtable->read(tcp->socket, buffer, len,
+                                    custom_read_callback);
+  } else {
+    grpc_slice_buffer_reset_and_unref_internal(tcp->read_slices);
+    call_read_cb(tcp, GRPC_ERROR_REF(error));
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "Initiating read on %p: error=%s", tcp->socket, str);
+  }
+}
+
+static void endpoint_read(grpc_endpoint* ep, grpc_slice_buffer* read_slices,
+                          grpc_closure* cb, bool /*urgent*/) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  GPR_ASSERT(tcp->read_cb == nullptr);
+  tcp->read_cb = cb;
+  tcp->read_slices = read_slices;
+  grpc_slice_buffer_reset_and_unref_internal(read_slices);
+  TCP_REF(tcp, "read");
+  if (grpc_resource_user_alloc_slices(&tcp->slice_allocator,
+                                      GRPC_TCP_DEFAULT_READ_SLICE_SIZE, 1,
+                                      tcp->read_slices)) {
+    tcp_read_allocation_done(tcp, GRPC_ERROR_NONE);
+  }
+}
+
+static void custom_write_callback(grpc_custom_socket* socket,
+                                  grpc_error* error) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)socket->endpoint;
+  grpc_closure* cb = tcp->write_cb;
+  tcp->write_cb = nullptr;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "write complete on %p: error=%s", tcp->socket, str);
+  }
+  TCP_UNREF(tcp, "write");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+static void endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* write_slices,
+                           grpc_closure* cb, void* /*arg*/) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    size_t j;
+
+    for (j = 0; j < write_slices->count; j++) {
+      char* data = grpc_dump_slice(write_slices->slices[j],
+                                   GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_INFO, "WRITE %p (peer=%s): %s", tcp->socket, tcp->peer_string,
+              data);
+      gpr_free(data);
+    }
+  }
+
+  if (tcp->shutting_down) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, cb,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("TCP socket is shutting down"));
+    return;
+  }
+
+  GPR_ASSERT(tcp->write_cb == nullptr);
+  tcp->write_slices = write_slices;
+  GPR_ASSERT(tcp->write_slices->count <= UINT_MAX);
+  if (tcp->write_slices->count == 0) {
+    // No slices means we don't have to do anything,
+    // and libuv doesn't like empty writes
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, GRPC_ERROR_NONE);
+    return;
+  }
+  tcp->write_cb = cb;
+  TCP_REF(tcp, "write");
+  grpc_custom_socket_vtable->write(tcp->socket, tcp->write_slices,
+                                   custom_write_callback);
+}
+
+static void endpoint_add_to_pollset(grpc_endpoint* ep, grpc_pollset* pollset) {
+  // No-op. We're ignoring pollsets currently
+  (void)ep;
+  (void)pollset;
+}
+
+static void endpoint_add_to_pollset_set(grpc_endpoint* ep,
+                                        grpc_pollset_set* pollset) {
+  // No-op. We're ignoring pollsets currently
+  (void)ep;
+  (void)pollset;
+}
+
+static void endpoint_delete_from_pollset_set(grpc_endpoint* ep,
+                                             grpc_pollset_set* pollset) {
+  // No-op. We're ignoring pollsets currently
+  (void)ep;
+  (void)pollset;
+}
+
+static void endpoint_shutdown(grpc_endpoint* ep, grpc_error* why) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  if (!tcp->shutting_down) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      const char* str = grpc_error_string(why);
+      gpr_log(GPR_INFO, "TCP %p shutdown why=%s", tcp->socket, str);
+    }
+    tcp->shutting_down = true;
+    // grpc_core::ExecCtx::Run(DEBUG_LOCATION,tcp->read_cb,
+    // GRPC_ERROR_REF(why));
+    // grpc_core::ExecCtx::Run(DEBUG_LOCATION,tcp->write_cb,
+    // GRPC_ERROR_REF(why)); tcp->read_cb = nullptr; tcp->write_cb = nullptr;
+    grpc_resource_user_shutdown(tcp->resource_user);
+    grpc_custom_socket_vtable->shutdown(tcp->socket);
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+static void custom_close_callback(grpc_custom_socket* socket) {
+  socket->refs--;
+  if (socket->refs == 0) {
+    grpc_custom_socket_vtable->destroy(socket);
+    gpr_free(socket);
+  } else if (socket->endpoint) {
+    grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+    grpc_core::ExecCtx exec_ctx;
+    custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)socket->endpoint;
+    TCP_UNREF(tcp, "destroy");
+  }
+}
+
+static void endpoint_destroy(grpc_endpoint* ep) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  grpc_custom_socket_vtable->close(tcp->socket, custom_close_callback);
+}
+
+static char* endpoint_get_peer(grpc_endpoint* ep) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  return gpr_strdup(tcp->peer_string);
+}
+
+static grpc_resource_user* endpoint_get_resource_user(grpc_endpoint* ep) {
+  custom_tcp_endpoint* tcp = (custom_tcp_endpoint*)ep;
+  return tcp->resource_user;
+}
+
+static int endpoint_get_fd(grpc_endpoint* /*ep*/) { return -1; }
+
+static bool endpoint_can_track_err(grpc_endpoint* /*ep*/) { return false; }
+
+static grpc_endpoint_vtable vtable = {endpoint_read,
+                                      endpoint_write,
+                                      endpoint_add_to_pollset,
+                                      endpoint_add_to_pollset_set,
+                                      endpoint_delete_from_pollset_set,
+                                      endpoint_shutdown,
+                                      endpoint_destroy,
+                                      endpoint_get_resource_user,
+                                      endpoint_get_peer,
+                                      endpoint_get_fd,
+                                      endpoint_can_track_err};
+
+grpc_endpoint* custom_tcp_endpoint_create(grpc_custom_socket* socket,
+                                          grpc_resource_quota* resource_quota,
+                                          char* peer_string) {
+  custom_tcp_endpoint* tcp =
+      (custom_tcp_endpoint*)gpr_malloc(sizeof(custom_tcp_endpoint));
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "Creating TCP endpoint %p", socket);
+  }
+  memset(tcp, 0, sizeof(custom_tcp_endpoint));
+  socket->refs++;
+  socket->endpoint = (grpc_endpoint*)tcp;
+  tcp->socket = socket;
+  tcp->base.vtable = &vtable;
+  gpr_ref_init(&tcp->refcount, 1);
+  tcp->peer_string = gpr_strdup(peer_string);
+  tcp->shutting_down = false;
+  tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
+  grpc_resource_user_slice_allocator_init(
+      &tcp->slice_allocator, tcp->resource_user, tcp_read_allocation_done, tcp);
+
+  return &tcp->base;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.h
new file mode 100644
index 0000000..fd2cb03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_custom.h	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+
+// Same number as the micro of SO_REUSEPORT in kernel
+#define GRPC_CUSTOM_SOCKET_OPT_SO_REUSEPORT (0x00000200u)
+
+typedef struct grpc_tcp_listener grpc_tcp_listener;
+typedef struct grpc_custom_tcp_connect grpc_custom_tcp_connect;
+
+typedef struct grpc_custom_socket {
+  // Implementation defined
+  void* impl;
+  grpc_endpoint* endpoint;
+  grpc_tcp_listener* listener;
+  grpc_custom_tcp_connect* connector;
+  int refs;
+} grpc_custom_socket;
+
+typedef void (*grpc_custom_connect_callback)(grpc_custom_socket* socket,
+                                             grpc_error* error);
+typedef void (*grpc_custom_write_callback)(grpc_custom_socket* socket,
+                                           grpc_error* error);
+typedef void (*grpc_custom_read_callback)(grpc_custom_socket* socket,
+                                          size_t nread, grpc_error* error);
+typedef void (*grpc_custom_accept_callback)(grpc_custom_socket* socket,
+                                            grpc_custom_socket* client,
+                                            grpc_error* error);
+typedef void (*grpc_custom_close_callback)(grpc_custom_socket* socket);
+
+typedef struct grpc_socket_vtable {
+  grpc_error* (*init)(grpc_custom_socket* socket, int domain);
+  void (*connect)(grpc_custom_socket* socket, const grpc_sockaddr* addr,
+                  size_t len, grpc_custom_connect_callback cb);
+  void (*destroy)(grpc_custom_socket* socket);
+  void (*shutdown)(grpc_custom_socket* socket);
+  void (*close)(grpc_custom_socket* socket, grpc_custom_close_callback cb);
+  void (*write)(grpc_custom_socket* socket, grpc_slice_buffer* slices,
+                grpc_custom_write_callback cb);
+  void (*read)(grpc_custom_socket* socket, char* buffer, size_t length,
+               grpc_custom_read_callback cb);
+  grpc_error* (*getpeername)(grpc_custom_socket* socket,
+                             const grpc_sockaddr* addr, int* len);
+  grpc_error* (*getsockname)(grpc_custom_socket* socket,
+                             const grpc_sockaddr* addr, int* len);
+  grpc_error* (*bind)(grpc_custom_socket* socket, const grpc_sockaddr* addr,
+                      size_t len, int flags);
+  grpc_error* (*listen)(grpc_custom_socket* socket);
+  void (*accept)(grpc_custom_socket* socket, grpc_custom_socket* client,
+                 grpc_custom_accept_callback cb);
+} grpc_socket_vtable;
+
+/* Internal APIs */
+void grpc_custom_endpoint_init(grpc_socket_vtable* impl);
+
+void grpc_custom_close_server_callback(grpc_tcp_listener* listener);
+
+grpc_endpoint* custom_tcp_endpoint_create(grpc_custom_socket* socket,
+                                          grpc_resource_quota* resource_quota,
+                                          char* peer_string);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.cc
new file mode 100644
index 0000000..bd0562b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.cc	
@@ -0,0 +1,1855 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include "src/core/lib/iomgr/tcp_posix.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <algorithm>
+#include <unordered_map>
+
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/buffer_list.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#ifndef SOL_TCP
+#define SOL_TCP IPPROTO_TCP
+#endif
+
+#ifndef TCP_INQ
+#define TCP_INQ 36
+#define TCP_CM_INQ TCP_INQ
+#endif
+
+#ifdef GRPC_HAVE_MSG_NOSIGNAL
+#define SENDMSG_FLAGS MSG_NOSIGNAL
+#else
+#define SENDMSG_FLAGS 0
+#endif
+
+// TCP zero copy sendmsg flag.
+// NB: We define this here as a fallback in case we're using an older set of
+// library headers that has not defined MSG_ZEROCOPY. Since this constant is
+// part of the kernel, we are guaranteed it will never change/disagree so
+// defining it here is safe.
+#ifndef MSG_ZEROCOPY
+#define MSG_ZEROCOPY 0x4000000
+#endif
+
+#ifdef GRPC_MSG_IOVLEN_TYPE
+typedef GRPC_MSG_IOVLEN_TYPE msg_iovlen_type;
+#else
+typedef size_t msg_iovlen_type;
+#endif
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+namespace grpc_core {
+
+class TcpZerocopySendRecord {
+ public:
+  TcpZerocopySendRecord() { grpc_slice_buffer_init(&buf_); }
+
+  ~TcpZerocopySendRecord() {
+    AssertEmpty();
+    grpc_slice_buffer_destroy_internal(&buf_);
+  }
+
+  // Given the slices that we wish to send, and the current offset into the
+  //   slice buffer (indicating which have already been sent), populate an iovec
+  //   array that will be used for a zerocopy enabled sendmsg().
+  msg_iovlen_type PopulateIovs(size_t* unwind_slice_idx,
+                               size_t* unwind_byte_idx, size_t* sending_length,
+                               iovec* iov);
+
+  // A sendmsg() may not be able to send the bytes that we requested at this
+  // time, returning EAGAIN (possibly due to backpressure). In this case,
+  // unwind the offset into the slice buffer so we retry sending these bytes.
+  void UnwindIfThrottled(size_t unwind_slice_idx, size_t unwind_byte_idx) {
+    out_offset_.byte_idx = unwind_byte_idx;
+    out_offset_.slice_idx = unwind_slice_idx;
+  }
+
+  // Update the offset into the slice buffer based on how much we wanted to sent
+  // vs. what sendmsg() actually sent (which may be lower, possibly due to
+  // backpressure).
+  void UpdateOffsetForBytesSent(size_t sending_length, size_t actually_sent);
+
+  // Indicates whether all underlying data has been sent or not.
+  bool AllSlicesSent() { return out_offset_.slice_idx == buf_.count; }
+
+  // Reset this structure for a new tcp_write() with zerocopy.
+  void PrepareForSends(grpc_slice_buffer* slices_to_send) {
+    AssertEmpty();
+    out_offset_.slice_idx = 0;
+    out_offset_.byte_idx = 0;
+    grpc_slice_buffer_swap(slices_to_send, &buf_);
+    Ref();
+  }
+
+  // References: 1 reference per sendmsg(), and 1 for the tcp_write().
+  void Ref() { ref_.FetchAdd(1, MemoryOrder::RELAXED); }
+
+  // Unref: called when we get an error queue notification for a sendmsg(), if a
+  //  sendmsg() failed or when tcp_write() is done.
+  bool Unref() {
+    const intptr_t prior = ref_.FetchSub(1, MemoryOrder::ACQ_REL);
+    GPR_DEBUG_ASSERT(prior > 0);
+    if (prior == 1) {
+      AllSendsComplete();
+      return true;
+    }
+    return false;
+  }
+
+ private:
+  struct OutgoingOffset {
+    size_t slice_idx = 0;
+    size_t byte_idx = 0;
+  };
+
+  void AssertEmpty() {
+    GPR_DEBUG_ASSERT(buf_.count == 0);
+    GPR_DEBUG_ASSERT(buf_.length == 0);
+    GPR_DEBUG_ASSERT(ref_.Load(MemoryOrder::RELAXED) == 0);
+  }
+
+  // When all sendmsg() calls associated with this tcp_write() have been
+  // completed (ie. we have received the notifications for each sequence number
+  // for each sendmsg()) and all reference counts have been dropped, drop our
+  // reference to the underlying data since we no longer need it.
+  void AllSendsComplete() {
+    GPR_DEBUG_ASSERT(ref_.Load(MemoryOrder::RELAXED) == 0);
+    grpc_slice_buffer_reset_and_unref_internal(&buf_);
+  }
+
+  grpc_slice_buffer buf_;
+  Atomic<intptr_t> ref_;
+  OutgoingOffset out_offset_;
+};
+
+class TcpZerocopySendCtx {
+ public:
+  static constexpr int kDefaultMaxSends = 4;
+  static constexpr size_t kDefaultSendBytesThreshold = 16 * 1024;  // 16KB
+
+  TcpZerocopySendCtx(int max_sends = kDefaultMaxSends,
+                     size_t send_bytes_threshold = kDefaultSendBytesThreshold)
+      : max_sends_(max_sends),
+        free_send_records_size_(max_sends),
+        threshold_bytes_(send_bytes_threshold) {
+    send_records_ = static_cast<TcpZerocopySendRecord*>(
+        gpr_malloc(max_sends * sizeof(*send_records_)));
+    free_send_records_ = static_cast<TcpZerocopySendRecord**>(
+        gpr_malloc(max_sends * sizeof(*free_send_records_)));
+    if (send_records_ == nullptr || free_send_records_ == nullptr) {
+      gpr_free(send_records_);
+      gpr_free(free_send_records_);
+      gpr_log(GPR_INFO, "Disabling TCP TX zerocopy due to memory pressure.\n");
+      memory_limited_ = true;
+    } else {
+      for (int idx = 0; idx < max_sends_; ++idx) {
+        new (send_records_ + idx) TcpZerocopySendRecord();
+        free_send_records_[idx] = send_records_ + idx;
+      }
+    }
+  }
+
+  ~TcpZerocopySendCtx() {
+    if (send_records_ != nullptr) {
+      for (int idx = 0; idx < max_sends_; ++idx) {
+        send_records_[idx].~TcpZerocopySendRecord();
+      }
+    }
+    gpr_free(send_records_);
+    gpr_free(free_send_records_);
+  }
+
+  // True if we were unable to allocate the various bookkeeping structures at
+  // transport initialization time. If memory limited, we do not zerocopy.
+  bool memory_limited() const { return memory_limited_; }
+
+  // TCP send zerocopy maintains an implicit sequence number for every
+  // successful sendmsg() with zerocopy enabled; the kernel later gives us an
+  // error queue notification with this sequence number indicating that the
+  // underlying data buffers that we sent can now be released. Once that
+  // notification is received, we can release the buffers associated with this
+  // zerocopy send record. Here, we associate the sequence number with the data
+  // buffers that were sent with the corresponding call to sendmsg().
+  void NoteSend(TcpZerocopySendRecord* record) {
+    record->Ref();
+    AssociateSeqWithSendRecord(last_send_, record);
+    ++last_send_;
+  }
+
+  // If sendmsg() actually failed, though, we need to revert the sequence number
+  // that we speculatively bumped before calling sendmsg(). Note that we bump
+  // this sequence number and perform relevant bookkeeping (see: NoteSend())
+  // *before* calling sendmsg() since, if we called it *after* sendmsg(), then
+  // there is a possible race with the release notification which could occur on
+  // another thread before we do the necessary bookkeeping. Hence, calling
+  // NoteSend() *before* sendmsg() and implementing an undo function is needed.
+  void UndoSend() {
+    --last_send_;
+    if (ReleaseSendRecord(last_send_)->Unref()) {
+      // We should still be holding the ref taken by tcp_write().
+      GPR_DEBUG_ASSERT(0);
+    }
+  }
+
+  // Simply associate this send record (and the underlying sent data buffers)
+  // with the implicit sequence number for this zerocopy sendmsg().
+  void AssociateSeqWithSendRecord(uint32_t seq, TcpZerocopySendRecord* record) {
+    MutexLock guard(&lock_);
+    ctx_lookup_.emplace(seq, record);
+  }
+
+  // Get a send record for a send that we wish to do with zerocopy.
+  TcpZerocopySendRecord* GetSendRecord() {
+    MutexLock guard(&lock_);
+    return TryGetSendRecordLocked();
+  }
+
+  // A given send record corresponds to a single tcp_write() with zerocopy
+  // enabled. This can result in several sendmsg() calls to flush all of the
+  // data to wire. Each sendmsg() takes a reference on the
+  // TcpZerocopySendRecord, and corresponds to a single sequence number.
+  // ReleaseSendRecord releases a reference on TcpZerocopySendRecord for a
+  // single sequence number. This is called either when we receive the relevant
+  // error queue notification (saying that we can discard the underlying
+  // buffers for this sendmsg()) is received from the kernel - or, in case
+  // sendmsg() was unsuccessful to begin with.
+  TcpZerocopySendRecord* ReleaseSendRecord(uint32_t seq) {
+    MutexLock guard(&lock_);
+    return ReleaseSendRecordLocked(seq);
+  }
+
+  // After all the references to a TcpZerocopySendRecord are released, we can
+  // add it back to the pool (of size max_sends_). Note that we can only have
+  // max_sends_ tcp_write() instances with zerocopy enabled in flight at the
+  // same time.
+  void PutSendRecord(TcpZerocopySendRecord* record) {
+    GPR_DEBUG_ASSERT(record >= send_records_ &&
+                     record < send_records_ + max_sends_);
+    MutexLock guard(&lock_);
+    PutSendRecordLocked(record);
+  }
+
+  // Indicate that we are disposing of this zerocopy context. This indicator
+  // will prevent new zerocopy writes from being issued.
+  void Shutdown() { shutdown_.Store(true, MemoryOrder::RELEASE); }
+
+  // Indicates that there are no inflight tcp_write() instances with zerocopy
+  // enabled.
+  bool AllSendRecordsEmpty() {
+    MutexLock guard(&lock_);
+    return free_send_records_size_ == max_sends_;
+  }
+
+  bool enabled() const { return enabled_; }
+
+  void set_enabled(bool enabled) {
+    GPR_DEBUG_ASSERT(!enabled || !memory_limited());
+    enabled_ = enabled;
+  }
+
+  // Only use zerocopy if we are sending at least this many bytes. The
+  // additional overhead of reading the error queue for notifications means that
+  // zerocopy is not useful for small transfers.
+  size_t threshold_bytes() const { return threshold_bytes_; }
+
+ private:
+  TcpZerocopySendRecord* ReleaseSendRecordLocked(uint32_t seq) {
+    auto iter = ctx_lookup_.find(seq);
+    GPR_DEBUG_ASSERT(iter != ctx_lookup_.end());
+    TcpZerocopySendRecord* record = iter->second;
+    ctx_lookup_.erase(iter);
+    return record;
+  }
+
+  TcpZerocopySendRecord* TryGetSendRecordLocked() {
+    if (shutdown_.Load(MemoryOrder::ACQUIRE)) {
+      return nullptr;
+    }
+    if (free_send_records_size_ == 0) {
+      return nullptr;
+    }
+    free_send_records_size_--;
+    return free_send_records_[free_send_records_size_];
+  }
+
+  void PutSendRecordLocked(TcpZerocopySendRecord* record) {
+    GPR_DEBUG_ASSERT(free_send_records_size_ < max_sends_);
+    free_send_records_[free_send_records_size_] = record;
+    free_send_records_size_++;
+  }
+
+  TcpZerocopySendRecord* send_records_;
+  TcpZerocopySendRecord** free_send_records_;
+  int max_sends_;
+  int free_send_records_size_;
+  Mutex lock_;
+  uint32_t last_send_ = 0;
+  Atomic<bool> shutdown_;
+  bool enabled_ = false;
+  size_t threshold_bytes_ = kDefaultSendBytesThreshold;
+  std::unordered_map<uint32_t, TcpZerocopySendRecord*> ctx_lookup_;
+  bool memory_limited_ = false;
+};
+
+}  // namespace grpc_core
+
+using grpc_core::TcpZerocopySendCtx;
+using grpc_core::TcpZerocopySendRecord;
+
+namespace {
+struct grpc_tcp {
+  grpc_endpoint base;
+  grpc_fd* em_fd;
+  int fd;
+  /* Used by the endpoint read function to distinguish the very first read call
+   * from the rest */
+  bool is_first_read;
+  double target_length;
+  double bytes_read_this_round;
+  grpc_core::RefCount refcount;
+  gpr_atm shutdown_count;
+
+  int min_read_chunk_size;
+  int max_read_chunk_size;
+
+  /* garbage after the last read */
+  grpc_slice_buffer last_read_buffer;
+
+  grpc_slice_buffer* incoming_buffer;
+  int inq;          /* bytes pending on the socket from the last read. */
+  bool inq_capable; /* cache whether kernel supports inq */
+
+  grpc_slice_buffer* outgoing_buffer;
+  /* byte within outgoing_buffer->slices[0] to write next */
+  size_t outgoing_byte_idx;
+
+  grpc_closure* read_cb;
+  grpc_closure* write_cb;
+  grpc_closure* release_fd_cb;
+  int* release_fd;
+
+  grpc_closure read_done_closure;
+  grpc_closure write_done_closure;
+  grpc_closure error_closure;
+
+  char* peer_string;
+
+  grpc_resource_user* resource_user;
+  grpc_resource_user_slice_allocator slice_allocator;
+
+  grpc_core::TracedBuffer* tb_head; /* List of traced buffers */
+  gpr_mu tb_mu; /* Lock for access to list of traced buffers */
+
+  /* grpc_endpoint_write takes an argument which if non-null means that the
+   * transport layer wants the TCP layer to collect timestamps for this write.
+   * This arg is forwarded to the timestamps callback function when the ACK
+   * timestamp is received from the kernel. This arg is a (void *) which allows
+   * users of this API to pass in a pointer to any kind of structure. This
+   * structure could actually be a tag or any book-keeping object that the user
+   * can use to distinguish between different traced writes. The only
+   * requirement from the TCP endpoint layer is that this arg should be non-null
+   * if the user wants timestamps for the write. */
+  void* outgoing_buffer_arg;
+  /* A counter which starts at 0. It is initialized the first time the socket
+   * options for collecting timestamps are set, and is incremented with each
+   * byte sent. */
+  int bytes_counter;
+  bool socket_ts_enabled; /* True if timestamping options are set on the socket
+                           */
+  bool ts_capable;        /* Cache whether we can set timestamping options */
+  gpr_atm stop_error_notification; /* Set to 1 if we do not want to be notified
+                                      on errors anymore */
+  TcpZerocopySendCtx tcp_zerocopy_send_ctx;
+  TcpZerocopySendRecord* current_zerocopy_send = nullptr;
+};
+
+struct backup_poller {
+  gpr_mu* pollset_mu;
+  grpc_closure run_poller;
+};
+
+}  // namespace
+
+static void ZerocopyDisableAndWaitForRemaining(grpc_tcp* tcp);
+
+#define BACKUP_POLLER_POLLSET(b) ((grpc_pollset*)((b) + 1))
+
+static gpr_atm g_uncovered_notifications_pending;
+static gpr_atm g_backup_poller; /* backup_poller* */
+
+static void tcp_handle_read(void* arg /* grpc_tcp */, grpc_error* error);
+static void tcp_handle_write(void* arg /* grpc_tcp */, grpc_error* error);
+static void tcp_drop_uncovered_then_handle_write(void* arg /* grpc_tcp */,
+                                                 grpc_error* error);
+
+static void done_poller(void* bp, grpc_error* /*error_ignored*/) {
+  backup_poller* p = static_cast<backup_poller*>(bp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "BACKUP_POLLER:%p destroy", p);
+  }
+  grpc_pollset_destroy(BACKUP_POLLER_POLLSET(p));
+  gpr_free(p);
+}
+
+static void run_poller(void* bp, grpc_error* /*error_ignored*/) {
+  backup_poller* p = static_cast<backup_poller*>(bp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "BACKUP_POLLER:%p run", p);
+  }
+  gpr_mu_lock(p->pollset_mu);
+  grpc_millis deadline = grpc_core::ExecCtx::Get()->Now() + 10 * GPR_MS_PER_SEC;
+  GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS();
+  GRPC_LOG_IF_ERROR(
+      "backup_poller:pollset_work",
+      grpc_pollset_work(BACKUP_POLLER_POLLSET(p), nullptr, deadline));
+  gpr_mu_unlock(p->pollset_mu);
+  /* last "uncovered" notification is the ref that keeps us polling, if we get
+   * there try a cas to release it */
+  if (gpr_atm_no_barrier_load(&g_uncovered_notifications_pending) == 1 &&
+      gpr_atm_full_cas(&g_uncovered_notifications_pending, 1, 0)) {
+    gpr_mu_lock(p->pollset_mu);
+    bool cas_ok = gpr_atm_full_cas(&g_backup_poller, (gpr_atm)p, 0);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "BACKUP_POLLER:%p done cas_ok=%d", p, cas_ok);
+    }
+    gpr_mu_unlock(p->pollset_mu);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "BACKUP_POLLER:%p shutdown", p);
+    }
+    grpc_pollset_shutdown(BACKUP_POLLER_POLLSET(p),
+                          GRPC_CLOSURE_INIT(&p->run_poller, done_poller, p,
+                                            grpc_schedule_on_exec_ctx));
+  } else {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "BACKUP_POLLER:%p reschedule", p);
+    }
+    grpc_core::Executor::Run(&p->run_poller, GRPC_ERROR_NONE,
+                             grpc_core::ExecutorType::DEFAULT,
+                             grpc_core::ExecutorJobType::LONG);
+  }
+}
+
+static void drop_uncovered(grpc_tcp* /*tcp*/) {
+  backup_poller* p = (backup_poller*)gpr_atm_acq_load(&g_backup_poller);
+  gpr_atm old_count =
+      gpr_atm_full_fetch_add(&g_uncovered_notifications_pending, -1);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "BACKUP_POLLER:%p uncover cnt %d->%d", p,
+            static_cast<int>(old_count), static_cast<int>(old_count) - 1);
+  }
+  GPR_ASSERT(old_count != 1);
+}
+
+// gRPC API considers a Write operation to be done the moment it clears ‘flow
+// control’ i.e., not necessarily sent on the wire. This means that the
+// application MIGHT not call `grpc_completion_queue_next/pluck` in a timely
+// manner when its `Write()` API is acked.
+//
+// We need to ensure that the fd is 'covered' (i.e being monitored by some
+// polling thread and progress is made) and hence add it to a backup poller here
+static void cover_self(grpc_tcp* tcp) {
+  backup_poller* p;
+  gpr_atm old_count =
+      gpr_atm_no_barrier_fetch_add(&g_uncovered_notifications_pending, 2);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "BACKUP_POLLER: cover cnt %d->%d",
+            static_cast<int>(old_count), 2 + static_cast<int>(old_count));
+  }
+  if (old_count == 0) {
+    GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED();
+    p = static_cast<backup_poller*>(
+        gpr_zalloc(sizeof(*p) + grpc_pollset_size()));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "BACKUP_POLLER:%p create", p);
+    }
+    grpc_pollset_init(BACKUP_POLLER_POLLSET(p), &p->pollset_mu);
+    gpr_atm_rel_store(&g_backup_poller, (gpr_atm)p);
+    grpc_core::Executor::Run(
+        GRPC_CLOSURE_INIT(&p->run_poller, run_poller, p, nullptr),
+        GRPC_ERROR_NONE, grpc_core::ExecutorType::DEFAULT,
+        grpc_core::ExecutorJobType::LONG);
+  } else {
+    while ((p = (backup_poller*)gpr_atm_acq_load(&g_backup_poller)) ==
+           nullptr) {
+      // spin waiting for backup poller
+    }
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "BACKUP_POLLER:%p add %p", p, tcp);
+  }
+  grpc_pollset_add_fd(BACKUP_POLLER_POLLSET(p), tcp->em_fd);
+  if (old_count != 0) {
+    drop_uncovered(tcp);
+  }
+}
+
+static void notify_on_read(grpc_tcp* tcp) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p notify_on_read", tcp);
+  }
+  grpc_fd_notify_on_read(tcp->em_fd, &tcp->read_done_closure);
+}
+
+static void notify_on_write(grpc_tcp* tcp) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p notify_on_write", tcp);
+  }
+  if (!grpc_event_engine_run_in_background()) {
+    cover_self(tcp);
+  }
+  grpc_fd_notify_on_write(tcp->em_fd, &tcp->write_done_closure);
+}
+
+static void tcp_drop_uncovered_then_handle_write(void* arg, grpc_error* error) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p got_write: %s", arg, grpc_error_string(error));
+  }
+  drop_uncovered(static_cast<grpc_tcp*>(arg));
+  tcp_handle_write(arg, error);
+}
+
+static void add_to_estimate(grpc_tcp* tcp, size_t bytes) {
+  tcp->bytes_read_this_round += static_cast<double>(bytes);
+}
+
+static void finish_estimate(grpc_tcp* tcp) {
+  /* If we read >80% of the target buffer in one read loop, increase the size
+     of the target buffer to either the amount read, or twice its previous
+     value */
+  if (tcp->bytes_read_this_round > tcp->target_length * 0.8) {
+    tcp->target_length =
+        GPR_MAX(2 * tcp->target_length, tcp->bytes_read_this_round);
+  } else {
+    tcp->target_length =
+        0.99 * tcp->target_length + 0.01 * tcp->bytes_read_this_round;
+  }
+  tcp->bytes_read_this_round = 0;
+}
+
+static size_t get_target_read_size(grpc_tcp* tcp) {
+  grpc_resource_quota* rq = grpc_resource_user_quota(tcp->resource_user);
+  double pressure = grpc_resource_quota_get_memory_pressure(rq);
+  double target =
+      tcp->target_length * (pressure > 0.8 ? (1.0 - pressure) / 0.2 : 1.0);
+  size_t sz = ((static_cast<size_t> GPR_CLAMP(target, tcp->min_read_chunk_size,
+                                              tcp->max_read_chunk_size)) +
+               255) &
+              ~static_cast<size_t>(255);
+  /* don't use more than 1/16th of the overall resource quota for a single read
+   * alloc */
+  size_t rqmax = grpc_resource_quota_peek_size(rq);
+  if (sz > rqmax / 16 && rqmax > 1024) {
+    sz = rqmax / 16;
+  }
+  return sz;
+}
+
+static grpc_error* tcp_annotate_error(grpc_error* src_error, grpc_tcp* tcp) {
+  return grpc_error_set_str(
+      grpc_error_set_int(
+          grpc_error_set_int(src_error, GRPC_ERROR_INT_FD, tcp->fd),
+          /* All tcp errors are marked with UNAVAILABLE so that application may
+           * choose to retry. */
+          GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE),
+      GRPC_ERROR_STR_TARGET_ADDRESS,
+      grpc_slice_from_copied_string(tcp->peer_string));
+}
+
+static void tcp_handle_read(void* arg /* grpc_tcp */, grpc_error* error);
+static void tcp_handle_write(void* arg /* grpc_tcp */, grpc_error* error);
+
+static void tcp_shutdown(grpc_endpoint* ep, grpc_error* why) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  ZerocopyDisableAndWaitForRemaining(tcp);
+  grpc_fd_shutdown(tcp->em_fd, why);
+  grpc_resource_user_shutdown(tcp->resource_user);
+}
+
+static void tcp_free(grpc_tcp* tcp) {
+  grpc_fd_orphan(tcp->em_fd, tcp->release_fd_cb, tcp->release_fd,
+                 "tcp_unref_orphan");
+  grpc_slice_buffer_destroy_internal(&tcp->last_read_buffer);
+  grpc_resource_user_unref(tcp->resource_user);
+  gpr_free(tcp->peer_string);
+  /* The lock is not really necessary here, since all refs have been released */
+  gpr_mu_lock(&tcp->tb_mu);
+  grpc_core::TracedBuffer::Shutdown(
+      &tcp->tb_head, tcp->outgoing_buffer_arg,
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("endpoint destroyed"));
+  gpr_mu_unlock(&tcp->tb_mu);
+  tcp->outgoing_buffer_arg = nullptr;
+  gpr_mu_destroy(&tcp->tb_mu);
+  tcp->tcp_zerocopy_send_ctx.~TcpZerocopySendCtx();
+  gpr_free(tcp);
+}
+
+#ifndef NDEBUG
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp), (reason), DEBUG_LOCATION)
+#define TCP_REF(tcp, reason) tcp_ref((tcp), (reason), DEBUG_LOCATION)
+static void tcp_unref(grpc_tcp* tcp, const char* reason,
+                      const grpc_core::DebugLocation& debug_location) {
+  if (GPR_UNLIKELY(tcp->refcount.Unref(debug_location, reason))) {
+    tcp_free(tcp);
+  }
+}
+
+static void tcp_ref(grpc_tcp* tcp, const char* reason,
+                    const grpc_core::DebugLocation& debug_location) {
+  tcp->refcount.Ref(debug_location, reason);
+}
+#else
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp))
+#define TCP_REF(tcp, reason) tcp_ref((tcp))
+static void tcp_unref(grpc_tcp* tcp) {
+  if (GPR_UNLIKELY(tcp->refcount.Unref())) {
+    tcp_free(tcp);
+  }
+}
+
+static void tcp_ref(grpc_tcp* tcp) { tcp->refcount.Ref(); }
+#endif
+
+static void tcp_destroy(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  grpc_slice_buffer_reset_and_unref_internal(&tcp->last_read_buffer);
+  if (grpc_event_engine_can_track_errors()) {
+    ZerocopyDisableAndWaitForRemaining(tcp);
+    gpr_atm_no_barrier_store(&tcp->stop_error_notification, true);
+    grpc_fd_set_error(tcp->em_fd);
+  }
+  TCP_UNREF(tcp, "destroy");
+}
+
+static void call_read_cb(grpc_tcp* tcp, grpc_error* error) {
+  grpc_closure* cb = tcp->read_cb;
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p call_cb %p %p:%p", tcp, cb, cb->cb, cb->cb_arg);
+    size_t i;
+    const char* str = grpc_error_string(error);
+    gpr_log(GPR_INFO, "READ %p (peer=%s) error=%s", tcp, tcp->peer_string, str);
+
+    if (gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+      for (i = 0; i < tcp->incoming_buffer->count; i++) {
+        char* dump = grpc_dump_slice(tcp->incoming_buffer->slices[i],
+                                     GPR_DUMP_HEX | GPR_DUMP_ASCII);
+        gpr_log(GPR_DEBUG, "DATA: %s", dump);
+        gpr_free(dump);
+      }
+    }
+  }
+
+  tcp->read_cb = nullptr;
+  tcp->incoming_buffer = nullptr;
+  grpc_core::Closure::Run(DEBUG_LOCATION, cb, error);
+}
+
+#define MAX_READ_IOVEC 4
+static void tcp_do_read(grpc_tcp* tcp) {
+  GPR_TIMER_SCOPE("tcp_do_read", 0);
+  struct msghdr msg;
+  struct iovec iov[MAX_READ_IOVEC];
+  ssize_t read_bytes;
+  size_t total_read_bytes = 0;
+  size_t iov_len =
+      std::min<size_t>(MAX_READ_IOVEC, tcp->incoming_buffer->count);
+#ifdef GRPC_LINUX_ERRQUEUE
+  constexpr size_t cmsg_alloc_space =
+      CMSG_SPACE(sizeof(grpc_core::scm_timestamping)) + CMSG_SPACE(sizeof(int));
+#else
+  constexpr size_t cmsg_alloc_space = 24 /* CMSG_SPACE(sizeof(int)) */;
+#endif /* GRPC_LINUX_ERRQUEUE */
+  char cmsgbuf[cmsg_alloc_space];
+  for (size_t i = 0; i < iov_len; i++) {
+    iov[i].iov_base = GRPC_SLICE_START_PTR(tcp->incoming_buffer->slices[i]);
+    iov[i].iov_len = GRPC_SLICE_LENGTH(tcp->incoming_buffer->slices[i]);
+  }
+
+  do {
+    /* Assume there is something on the queue. If we receive TCP_INQ from
+     * kernel, we will update this value, otherwise, we have to assume there is
+     * always something to read until we get EAGAIN. */
+    tcp->inq = 1;
+
+    msg.msg_name = nullptr;
+    msg.msg_namelen = 0;
+    msg.msg_iov = iov;
+    msg.msg_iovlen = static_cast<msg_iovlen_type>(iov_len);
+    if (tcp->inq_capable) {
+      msg.msg_control = cmsgbuf;
+      msg.msg_controllen = sizeof(cmsgbuf);
+    } else {
+      msg.msg_control = nullptr;
+      msg.msg_controllen = 0;
+    }
+    msg.msg_flags = 0;
+
+    GRPC_STATS_INC_TCP_READ_OFFER(tcp->incoming_buffer->length);
+    GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(tcp->incoming_buffer->count);
+
+    do {
+      GPR_TIMER_SCOPE("recvmsg", 0);
+      GRPC_STATS_INC_SYSCALL_READ();
+      read_bytes = recvmsg(tcp->fd, &msg, 0);
+    } while (read_bytes < 0 && errno == EINTR);
+
+    /* We have read something in previous reads. We need to deliver those
+     * bytes to the upper layer. */
+    if (read_bytes <= 0 && total_read_bytes > 0) {
+      tcp->inq = 1;
+      break;
+    }
+
+    if (read_bytes < 0) {
+      /* NB: After calling call_read_cb a parallel call of the read handler may
+       * be running. */
+      if (errno == EAGAIN) {
+        finish_estimate(tcp);
+        tcp->inq = 0;
+        /* We've consumed the edge, request a new one */
+        notify_on_read(tcp);
+      } else {
+        grpc_slice_buffer_reset_and_unref_internal(tcp->incoming_buffer);
+        call_read_cb(tcp,
+                     tcp_annotate_error(GRPC_OS_ERROR(errno, "recvmsg"), tcp));
+        TCP_UNREF(tcp, "read");
+      }
+      return;
+    }
+    if (read_bytes == 0) {
+      /* 0 read size ==> end of stream
+       *
+       * We may have read something, i.e., total_read_bytes > 0, but
+       * since the connection is closed we will drop the data here, because we
+       * can't call the callback multiple times. */
+      grpc_slice_buffer_reset_and_unref_internal(tcp->incoming_buffer);
+      call_read_cb(
+          tcp, tcp_annotate_error(
+                   GRPC_ERROR_CREATE_FROM_STATIC_STRING("Socket closed"), tcp));
+      TCP_UNREF(tcp, "read");
+      return;
+    }
+
+    GRPC_STATS_INC_TCP_READ_SIZE(read_bytes);
+    add_to_estimate(tcp, static_cast<size_t>(read_bytes));
+    GPR_DEBUG_ASSERT((size_t)read_bytes <=
+                     tcp->incoming_buffer->length - total_read_bytes);
+
+#ifdef GRPC_HAVE_TCP_INQ
+    if (tcp->inq_capable) {
+      GPR_DEBUG_ASSERT(!(msg.msg_flags & MSG_CTRUNC));
+      struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+      for (; cmsg != nullptr; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
+        if (cmsg->cmsg_level == SOL_TCP && cmsg->cmsg_type == TCP_CM_INQ &&
+            cmsg->cmsg_len == CMSG_LEN(sizeof(int))) {
+          tcp->inq = *reinterpret_cast<int*>(CMSG_DATA(cmsg));
+          break;
+        }
+      }
+    }
+#endif /* GRPC_HAVE_TCP_INQ */
+
+    total_read_bytes += read_bytes;
+    if (tcp->inq == 0 || total_read_bytes == tcp->incoming_buffer->length) {
+      /* We have filled incoming_buffer, and we cannot read any more. */
+      break;
+    }
+
+    /* We had a partial read, and still have space to read more data.
+     * So, adjust IOVs and try to read more. */
+    size_t remaining = read_bytes;
+    size_t j = 0;
+    for (size_t i = 0; i < iov_len; i++) {
+      if (remaining >= iov[i].iov_len) {
+        remaining -= iov[i].iov_len;
+        continue;
+      }
+      if (remaining > 0) {
+        iov[j].iov_base = static_cast<char*>(iov[i].iov_base) + remaining;
+        iov[j].iov_len = iov[i].iov_len - remaining;
+        remaining = 0;
+      } else {
+        iov[j].iov_base = iov[i].iov_base;
+        iov[j].iov_len = iov[i].iov_len;
+      }
+      ++j;
+    }
+    iov_len = j;
+  } while (true);
+
+  if (tcp->inq == 0) {
+    finish_estimate(tcp);
+  }
+
+  GPR_DEBUG_ASSERT(total_read_bytes > 0);
+  if (total_read_bytes < tcp->incoming_buffer->length) {
+    grpc_slice_buffer_trim_end(tcp->incoming_buffer,
+                               tcp->incoming_buffer->length - total_read_bytes,
+                               &tcp->last_read_buffer);
+  }
+  call_read_cb(tcp, GRPC_ERROR_NONE);
+  TCP_UNREF(tcp, "read");
+}
+
+static void tcp_read_allocation_done(void* tcpp, grpc_error* error) {
+  grpc_tcp* tcp = static_cast<grpc_tcp*>(tcpp);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p read_allocation_done: %s", tcp,
+            grpc_error_string(error));
+  }
+  if (GPR_UNLIKELY(error != GRPC_ERROR_NONE)) {
+    grpc_slice_buffer_reset_and_unref_internal(tcp->incoming_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(&tcp->last_read_buffer);
+    call_read_cb(tcp, GRPC_ERROR_REF(error));
+    TCP_UNREF(tcp, "read");
+  } else {
+    tcp_do_read(tcp);
+  }
+}
+
+static void tcp_continue_read(grpc_tcp* tcp) {
+  size_t target_read_size = get_target_read_size(tcp);
+  /* Wait for allocation only when there is no buffer left. */
+  if (tcp->incoming_buffer->length == 0 &&
+      tcp->incoming_buffer->count < MAX_READ_IOVEC) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "TCP:%p alloc_slices", tcp);
+    }
+    if (GPR_UNLIKELY(!grpc_resource_user_alloc_slices(&tcp->slice_allocator,
+                                                      target_read_size, 1,
+                                                      tcp->incoming_buffer))) {
+      // Wait for allocation.
+      return;
+    }
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p do_read", tcp);
+  }
+  tcp_do_read(tcp);
+}
+
+static void tcp_handle_read(void* arg /* grpc_tcp */, grpc_error* error) {
+  grpc_tcp* tcp = static_cast<grpc_tcp*>(arg);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p got_read: %s", tcp, grpc_error_string(error));
+  }
+
+  if (GPR_UNLIKELY(error != GRPC_ERROR_NONE)) {
+    grpc_slice_buffer_reset_and_unref_internal(tcp->incoming_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(&tcp->last_read_buffer);
+    call_read_cb(tcp, GRPC_ERROR_REF(error));
+    TCP_UNREF(tcp, "read");
+  } else {
+    tcp_continue_read(tcp);
+  }
+}
+
+static void tcp_read(grpc_endpoint* ep, grpc_slice_buffer* incoming_buffer,
+                     grpc_closure* cb, bool urgent) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  GPR_ASSERT(tcp->read_cb == nullptr);
+  tcp->read_cb = cb;
+  tcp->incoming_buffer = incoming_buffer;
+  grpc_slice_buffer_reset_and_unref_internal(incoming_buffer);
+  grpc_slice_buffer_swap(incoming_buffer, &tcp->last_read_buffer);
+  TCP_REF(tcp, "read");
+  if (tcp->is_first_read) {
+    /* Endpoint read called for the very first time. Register read callback with
+     * the polling engine */
+    tcp->is_first_read = false;
+    notify_on_read(tcp);
+  } else if (!urgent && tcp->inq == 0) {
+    /* Upper layer asked to read more but we know there is no pending data
+     * to read from previous reads. So, wait for POLLIN.
+     */
+    notify_on_read(tcp);
+  } else {
+    /* Not the first time. We may or may not have more bytes available. In any
+     * case call tcp->read_done_closure (i.e tcp_handle_read()) which does the
+     * right thing (i.e calls tcp_do_read() which either reads the available
+     * bytes or calls notify_on_read() to be notified when new bytes become
+     * available */
+    grpc_core::Closure::Run(DEBUG_LOCATION, &tcp->read_done_closure,
+                            GRPC_ERROR_NONE);
+  }
+}
+
+/* A wrapper around sendmsg. It sends \a msg over \a fd and returns the number
+ * of bytes sent. */
+ssize_t tcp_send(int fd, const struct msghdr* msg, int additional_flags = 0) {
+  GPR_TIMER_SCOPE("sendmsg", 1);
+  ssize_t sent_length;
+  do {
+    /* TODO(klempner): Cork if this is a partial write */
+    GRPC_STATS_INC_SYSCALL_WRITE();
+    sent_length = sendmsg(fd, msg, SENDMSG_FLAGS | additional_flags);
+  } while (sent_length < 0 && errno == EINTR);
+  return sent_length;
+}
+
+/** This is to be called if outgoing_buffer_arg is not null. On linux platforms,
+ * this will call sendmsg with socket options set to collect timestamps inside
+ * the kernel. On return, sent_length is set to the return value of the sendmsg
+ * call. Returns false if setting the socket options failed. This is not
+ * implemented for non-linux platforms currently, and crashes out.
+ */
+static bool tcp_write_with_timestamps(grpc_tcp* tcp, struct msghdr* msg,
+                                      size_t sending_length,
+                                      ssize_t* sent_length,
+                                      int additional_flags = 0);
+
+/** The callback function to be invoked when we get an error on the socket. */
+static void tcp_handle_error(void* arg /* grpc_tcp */, grpc_error* error);
+
+static TcpZerocopySendRecord* tcp_get_send_zerocopy_record(
+    grpc_tcp* tcp, grpc_slice_buffer* buf);
+
+#ifdef GRPC_LINUX_ERRQUEUE
+static bool process_errors(grpc_tcp* tcp);
+
+static TcpZerocopySendRecord* tcp_get_send_zerocopy_record(
+    grpc_tcp* tcp, grpc_slice_buffer* buf) {
+  TcpZerocopySendRecord* zerocopy_send_record = nullptr;
+  const bool use_zerocopy =
+      tcp->tcp_zerocopy_send_ctx.enabled() &&
+      tcp->tcp_zerocopy_send_ctx.threshold_bytes() < buf->length;
+  if (use_zerocopy) {
+    zerocopy_send_record = tcp->tcp_zerocopy_send_ctx.GetSendRecord();
+    if (zerocopy_send_record == nullptr) {
+      process_errors(tcp);
+      zerocopy_send_record = tcp->tcp_zerocopy_send_ctx.GetSendRecord();
+    }
+    if (zerocopy_send_record != nullptr) {
+      zerocopy_send_record->PrepareForSends(buf);
+      GPR_DEBUG_ASSERT(buf->count == 0);
+      GPR_DEBUG_ASSERT(buf->length == 0);
+      tcp->outgoing_byte_idx = 0;
+      tcp->outgoing_buffer = nullptr;
+    }
+  }
+  return zerocopy_send_record;
+}
+
+static void ZerocopyDisableAndWaitForRemaining(grpc_tcp* tcp) {
+  tcp->tcp_zerocopy_send_ctx.Shutdown();
+  while (!tcp->tcp_zerocopy_send_ctx.AllSendRecordsEmpty()) {
+    process_errors(tcp);
+  }
+}
+
+static bool tcp_write_with_timestamps(grpc_tcp* tcp, struct msghdr* msg,
+                                      size_t sending_length,
+                                      ssize_t* sent_length,
+                                      int additional_flags) {
+  if (!tcp->socket_ts_enabled) {
+    uint32_t opt = grpc_core::kTimestampingSocketOptions;
+    if (setsockopt(tcp->fd, SOL_SOCKET, SO_TIMESTAMPING,
+                   static_cast<void*>(&opt), sizeof(opt)) != 0) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+        gpr_log(GPR_ERROR, "Failed to set timestamping options on the socket.");
+      }
+      return false;
+    }
+    tcp->bytes_counter = -1;
+    tcp->socket_ts_enabled = true;
+  }
+  /* Set control message to indicate that you want timestamps. */
+  union {
+    char cmsg_buf[CMSG_SPACE(sizeof(uint32_t))];
+    struct cmsghdr align;
+  } u;
+  cmsghdr* cmsg = reinterpret_cast<cmsghdr*>(u.cmsg_buf);
+  cmsg->cmsg_level = SOL_SOCKET;
+  cmsg->cmsg_type = SO_TIMESTAMPING;
+  cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t));
+  *reinterpret_cast<int*>(CMSG_DATA(cmsg)) =
+      grpc_core::kTimestampingRecordingOptions;
+  msg->msg_control = u.cmsg_buf;
+  msg->msg_controllen = CMSG_SPACE(sizeof(uint32_t));
+
+  /* If there was an error on sendmsg the logic in tcp_flush will handle it. */
+  ssize_t length = tcp_send(tcp->fd, msg, additional_flags);
+  *sent_length = length;
+  /* Only save timestamps if all the bytes were taken by sendmsg. */
+  if (sending_length == static_cast<size_t>(length)) {
+    gpr_mu_lock(&tcp->tb_mu);
+    grpc_core::TracedBuffer::AddNewEntry(
+        &tcp->tb_head, static_cast<uint32_t>(tcp->bytes_counter + length),
+        tcp->fd, tcp->outgoing_buffer_arg);
+    gpr_mu_unlock(&tcp->tb_mu);
+    tcp->outgoing_buffer_arg = nullptr;
+  }
+  return true;
+}
+
+static void UnrefMaybePutZerocopySendRecord(grpc_tcp* tcp,
+                                            TcpZerocopySendRecord* record,
+                                            uint32_t seq, const char* tag);
+// Reads \a cmsg to process zerocopy control messages.
+static void process_zerocopy(grpc_tcp* tcp, struct cmsghdr* cmsg) {
+  GPR_DEBUG_ASSERT(cmsg);
+  auto serr = reinterpret_cast<struct sock_extended_err*>(CMSG_DATA(cmsg));
+  GPR_DEBUG_ASSERT(serr->ee_errno == 0);
+  GPR_DEBUG_ASSERT(serr->ee_origin == SO_EE_ORIGIN_ZEROCOPY);
+  const uint32_t lo = serr->ee_info;
+  const uint32_t hi = serr->ee_data;
+  for (uint32_t seq = lo; seq <= hi; ++seq) {
+    // TODO(arjunroy): It's likely that lo and hi refer to zerocopy sequence
+    // numbers that are generated by a single call to grpc_endpoint_write; ie.
+    // we can batch the unref operation. So, check if record is the same for
+    // both; if so, batch the unref/put.
+    TcpZerocopySendRecord* record =
+        tcp->tcp_zerocopy_send_ctx.ReleaseSendRecord(seq);
+    GPR_DEBUG_ASSERT(record);
+    UnrefMaybePutZerocopySendRecord(tcp, record, seq, "CALLBACK RCVD");
+  }
+}
+
+// Whether the cmsg received from error queue is of the IPv4 or IPv6 levels.
+static bool CmsgIsIpLevel(const cmsghdr& cmsg) {
+  return (cmsg.cmsg_level == SOL_IPV6 && cmsg.cmsg_type == IPV6_RECVERR) ||
+         (cmsg.cmsg_level == SOL_IP && cmsg.cmsg_type == IP_RECVERR);
+}
+
+static bool CmsgIsZeroCopy(const cmsghdr& cmsg) {
+  if (!CmsgIsIpLevel(cmsg)) {
+    return false;
+  }
+  auto serr = reinterpret_cast<const sock_extended_err*> CMSG_DATA(&cmsg);
+  return serr->ee_errno == 0 && serr->ee_origin == SO_EE_ORIGIN_ZEROCOPY;
+}
+
+/** Reads \a cmsg to derive timestamps from the control messages. If a valid
+ * timestamp is found, the traced buffer list is updated with this timestamp.
+ * The caller of this function should be looping on the control messages found
+ * in \a msg. \a cmsg should point to the control message that the caller wants
+ * processed.
+ * On return, a pointer to a control message is returned. On the next iteration,
+ * CMSG_NXTHDR(msg, ret_val) should be passed as \a cmsg. */
+struct cmsghdr* process_timestamp(grpc_tcp* tcp, msghdr* msg,
+                                  struct cmsghdr* cmsg) {
+  auto next_cmsg = CMSG_NXTHDR(msg, cmsg);
+  cmsghdr* opt_stats = nullptr;
+  if (next_cmsg == nullptr) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_ERROR, "Received timestamp without extended error");
+    }
+    return cmsg;
+  }
+
+  /* Check if next_cmsg is an OPT_STATS msg */
+  if (next_cmsg->cmsg_level == SOL_SOCKET &&
+      next_cmsg->cmsg_type == SCM_TIMESTAMPING_OPT_STATS) {
+    opt_stats = next_cmsg;
+    next_cmsg = CMSG_NXTHDR(msg, opt_stats);
+    if (next_cmsg == nullptr) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+        gpr_log(GPR_ERROR, "Received timestamp without extended error");
+      }
+      return opt_stats;
+    }
+  }
+
+  if (!(next_cmsg->cmsg_level == SOL_IP || next_cmsg->cmsg_level == SOL_IPV6) ||
+      !(next_cmsg->cmsg_type == IP_RECVERR ||
+        next_cmsg->cmsg_type == IPV6_RECVERR)) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_ERROR, "Unexpected control message");
+    }
+    return cmsg;
+  }
+
+  auto tss =
+      reinterpret_cast<struct grpc_core::scm_timestamping*>(CMSG_DATA(cmsg));
+  auto serr = reinterpret_cast<struct sock_extended_err*>(CMSG_DATA(next_cmsg));
+  if (serr->ee_errno != ENOMSG ||
+      serr->ee_origin != SO_EE_ORIGIN_TIMESTAMPING) {
+    gpr_log(GPR_ERROR, "Unexpected control message");
+    return cmsg;
+  }
+  /* The error handling can potentially be done on another thread so we need
+   * to protect the traced buffer list. A lock free list might be better. Using
+   * a simple mutex for now. */
+  gpr_mu_lock(&tcp->tb_mu);
+  grpc_core::TracedBuffer::ProcessTimestamp(&tcp->tb_head, serr, opt_stats,
+                                            tss);
+  gpr_mu_unlock(&tcp->tb_mu);
+  return next_cmsg;
+}
+
+/** For linux platforms, reads the socket's error queue and processes error
+ * messages from the queue.
+ */
+static bool process_errors(grpc_tcp* tcp) {
+  bool processed_err = false;
+  struct iovec iov;
+  iov.iov_base = nullptr;
+  iov.iov_len = 0;
+  struct msghdr msg;
+  msg.msg_name = nullptr;
+  msg.msg_namelen = 0;
+  msg.msg_iov = &iov;
+  msg.msg_iovlen = 0;
+  msg.msg_flags = 0;
+  /* Allocate enough space so we don't need to keep increasing this as size
+   * of OPT_STATS increase */
+  constexpr size_t cmsg_alloc_space =
+      CMSG_SPACE(sizeof(grpc_core::scm_timestamping)) +
+      CMSG_SPACE(sizeof(sock_extended_err) + sizeof(sockaddr_in)) +
+      CMSG_SPACE(32 * NLA_ALIGN(NLA_HDRLEN + sizeof(uint64_t)));
+  /* Allocate aligned space for cmsgs received along with timestamps */
+  union {
+    char rbuf[cmsg_alloc_space];
+    struct cmsghdr align;
+  } aligned_buf;
+  msg.msg_control = aligned_buf.rbuf;
+  msg.msg_controllen = sizeof(aligned_buf.rbuf);
+  int r, saved_errno;
+  while (true) {
+    do {
+      r = recvmsg(tcp->fd, &msg, MSG_ERRQUEUE);
+      saved_errno = errno;
+    } while (r < 0 && saved_errno == EINTR);
+
+    if (r == -1 && saved_errno == EAGAIN) {
+      return processed_err; /* No more errors to process */
+    }
+    if (r == -1) {
+      return processed_err;
+    }
+    if (GPR_UNLIKELY((msg.msg_flags & MSG_CTRUNC) != 0)) {
+      gpr_log(GPR_ERROR, "Error message was truncated.");
+    }
+
+    if (msg.msg_controllen == 0) {
+      /* There was no control message found. It was probably spurious. */
+      return processed_err;
+    }
+    bool seen = false;
+    for (auto cmsg = CMSG_FIRSTHDR(&msg); cmsg && cmsg->cmsg_len;
+         cmsg = CMSG_NXTHDR(&msg, cmsg)) {
+      if (CmsgIsZeroCopy(*cmsg)) {
+        process_zerocopy(tcp, cmsg);
+        seen = true;
+        processed_err = true;
+      } else if (cmsg->cmsg_level == SOL_SOCKET &&
+                 cmsg->cmsg_type == SCM_TIMESTAMPING) {
+        cmsg = process_timestamp(tcp, &msg, cmsg);
+        seen = true;
+        processed_err = true;
+      } else {
+        /* Got a control message that is not a timestamp or zerocopy. Don't know
+         * how to handle this. */
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+          gpr_log(GPR_INFO,
+                  "unknown control message cmsg_level:%d cmsg_type:%d",
+                  cmsg->cmsg_level, cmsg->cmsg_type);
+        }
+        return processed_err;
+      }
+    }
+    if (!seen) {
+      return processed_err;
+    }
+  }
+}
+
+static void tcp_handle_error(void* arg /* grpc_tcp */, grpc_error* error) {
+  grpc_tcp* tcp = static_cast<grpc_tcp*>(arg);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "TCP:%p got_error: %s", tcp, grpc_error_string(error));
+  }
+
+  if (error != GRPC_ERROR_NONE ||
+      static_cast<bool>(gpr_atm_acq_load(&tcp->stop_error_notification))) {
+    /* We aren't going to register to hear on error anymore, so it is safe to
+     * unref. */
+    TCP_UNREF(tcp, "error-tracking");
+    return;
+  }
+
+  /* We are still interested in collecting timestamps, so let's try reading
+   * them. */
+  bool processed = process_errors(tcp);
+  /* This might not a timestamps error. Set the read and write closures to be
+   * ready. */
+  if (!processed) {
+    grpc_fd_set_readable(tcp->em_fd);
+    grpc_fd_set_writable(tcp->em_fd);
+  }
+  grpc_fd_notify_on_error(tcp->em_fd, &tcp->error_closure);
+}
+
+#else  /* GRPC_LINUX_ERRQUEUE */
+static TcpZerocopySendRecord* tcp_get_send_zerocopy_record(
+    grpc_tcp* tcp, grpc_slice_buffer* buf) {
+  return nullptr;
+}
+
+static void ZerocopyDisableAndWaitForRemaining(grpc_tcp* tcp) {}
+
+static bool tcp_write_with_timestamps(grpc_tcp* /*tcp*/, struct msghdr* /*msg*/,
+                                      size_t /*sending_length*/,
+                                      ssize_t* /*sent_length*/,
+                                      int /*additional_flags*/) {
+  gpr_log(GPR_ERROR, "Write with timestamps not supported for this platform");
+  GPR_ASSERT(0);
+  return false;
+}
+
+static void tcp_handle_error(void* /*arg*/ /* grpc_tcp */,
+                             grpc_error* /*error*/) {
+  gpr_log(GPR_ERROR, "Error handling is not supported for this platform");
+  GPR_ASSERT(0);
+}
+#endif /* GRPC_LINUX_ERRQUEUE */
+
+/* If outgoing_buffer_arg is filled, shuts down the list early, so that any
+ * release operations needed can be performed on the arg */
+void tcp_shutdown_buffer_list(grpc_tcp* tcp) {
+  if (tcp->outgoing_buffer_arg) {
+    gpr_mu_lock(&tcp->tb_mu);
+    grpc_core::TracedBuffer::Shutdown(
+        &tcp->tb_head, tcp->outgoing_buffer_arg,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("TracedBuffer list shutdown"));
+    gpr_mu_unlock(&tcp->tb_mu);
+    tcp->outgoing_buffer_arg = nullptr;
+  }
+}
+
+#if defined(IOV_MAX) && IOV_MAX < 1000
+#define MAX_WRITE_IOVEC IOV_MAX
+#else
+#define MAX_WRITE_IOVEC 1000
+#endif
+msg_iovlen_type TcpZerocopySendRecord::PopulateIovs(size_t* unwind_slice_idx,
+                                                    size_t* unwind_byte_idx,
+                                                    size_t* sending_length,
+                                                    iovec* iov) {
+  msg_iovlen_type iov_size;
+  *unwind_slice_idx = out_offset_.slice_idx;
+  *unwind_byte_idx = out_offset_.byte_idx;
+  for (iov_size = 0;
+       out_offset_.slice_idx != buf_.count && iov_size != MAX_WRITE_IOVEC;
+       iov_size++) {
+    iov[iov_size].iov_base =
+        GRPC_SLICE_START_PTR(buf_.slices[out_offset_.slice_idx]) +
+        out_offset_.byte_idx;
+    iov[iov_size].iov_len =
+        GRPC_SLICE_LENGTH(buf_.slices[out_offset_.slice_idx]) -
+        out_offset_.byte_idx;
+    *sending_length += iov[iov_size].iov_len;
+    ++(out_offset_.slice_idx);
+    out_offset_.byte_idx = 0;
+  }
+  GPR_DEBUG_ASSERT(iov_size > 0);
+  return iov_size;
+}
+
+void TcpZerocopySendRecord::UpdateOffsetForBytesSent(size_t sending_length,
+                                                     size_t actually_sent) {
+  size_t trailing = sending_length - actually_sent;
+  while (trailing > 0) {
+    size_t slice_length;
+    out_offset_.slice_idx--;
+    slice_length = GRPC_SLICE_LENGTH(buf_.slices[out_offset_.slice_idx]);
+    if (slice_length > trailing) {
+      out_offset_.byte_idx = slice_length - trailing;
+      break;
+    } else {
+      trailing -= slice_length;
+    }
+  }
+}
+
+// returns true if done, false if pending; if returning true, *error is set
+static bool do_tcp_flush_zerocopy(grpc_tcp* tcp, TcpZerocopySendRecord* record,
+                                  grpc_error** error) {
+  struct msghdr msg;
+  struct iovec iov[MAX_WRITE_IOVEC];
+  msg_iovlen_type iov_size;
+  ssize_t sent_length = 0;
+  size_t sending_length;
+  size_t unwind_slice_idx;
+  size_t unwind_byte_idx;
+  while (true) {
+    sending_length = 0;
+    iov_size = record->PopulateIovs(&unwind_slice_idx, &unwind_byte_idx,
+                                    &sending_length, iov);
+    msg.msg_name = nullptr;
+    msg.msg_namelen = 0;
+    msg.msg_iov = iov;
+    msg.msg_iovlen = iov_size;
+    msg.msg_flags = 0;
+    bool tried_sending_message = false;
+    // Before calling sendmsg (with or without timestamps): we
+    // take a single ref on the zerocopy send record.
+    tcp->tcp_zerocopy_send_ctx.NoteSend(record);
+    if (tcp->outgoing_buffer_arg != nullptr) {
+      if (!tcp->ts_capable ||
+          !tcp_write_with_timestamps(tcp, &msg, sending_length, &sent_length,
+                                     MSG_ZEROCOPY)) {
+        /* We could not set socket options to collect Fathom timestamps.
+         * Fallback on writing without timestamps. */
+        tcp->ts_capable = false;
+        tcp_shutdown_buffer_list(tcp);
+      } else {
+        tried_sending_message = true;
+      }
+    }
+    if (!tried_sending_message) {
+      msg.msg_control = nullptr;
+      msg.msg_controllen = 0;
+      GRPC_STATS_INC_TCP_WRITE_SIZE(sending_length);
+      GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(iov_size);
+      sent_length = tcp_send(tcp->fd, &msg, MSG_ZEROCOPY);
+    }
+    if (sent_length < 0) {
+      // If this particular send failed, drop ref taken earlier in this method.
+      tcp->tcp_zerocopy_send_ctx.UndoSend();
+      if (errno == EAGAIN) {
+        record->UnwindIfThrottled(unwind_slice_idx, unwind_byte_idx);
+        return false;
+      } else if (errno == EPIPE) {
+        *error = tcp_annotate_error(GRPC_OS_ERROR(errno, "sendmsg"), tcp);
+        tcp_shutdown_buffer_list(tcp);
+        return true;
+      } else {
+        *error = tcp_annotate_error(GRPC_OS_ERROR(errno, "sendmsg"), tcp);
+        tcp_shutdown_buffer_list(tcp);
+        return true;
+      }
+    }
+    tcp->bytes_counter += sent_length;
+    record->UpdateOffsetForBytesSent(sending_length,
+                                     static_cast<size_t>(sent_length));
+    if (record->AllSlicesSent()) {
+      *error = GRPC_ERROR_NONE;
+      return true;
+    }
+  }
+}
+
+static void UnrefMaybePutZerocopySendRecord(grpc_tcp* tcp,
+                                            TcpZerocopySendRecord* record,
+                                            uint32_t seq,
+                                            const char* /* tag */) {
+  if (record->Unref()) {
+    tcp->tcp_zerocopy_send_ctx.PutSendRecord(record);
+  }
+}
+
+static bool tcp_flush_zerocopy(grpc_tcp* tcp, TcpZerocopySendRecord* record,
+                               grpc_error** error) {
+  bool done = do_tcp_flush_zerocopy(tcp, record, error);
+  if (done) {
+    // Either we encountered an error, or we successfully sent all the bytes.
+    // In either case, we're done with this record.
+    UnrefMaybePutZerocopySendRecord(tcp, record, 0, "flush_done");
+  }
+  return done;
+}
+
+static bool tcp_flush(grpc_tcp* tcp, grpc_error** error) {
+  struct msghdr msg;
+  struct iovec iov[MAX_WRITE_IOVEC];
+  msg_iovlen_type iov_size;
+  ssize_t sent_length = 0;
+  size_t sending_length;
+  size_t trailing;
+  size_t unwind_slice_idx;
+  size_t unwind_byte_idx;
+
+  // We always start at zero, because we eagerly unref and trim the slice
+  // buffer as we write
+  size_t outgoing_slice_idx = 0;
+
+  while (true) {
+    sending_length = 0;
+    unwind_slice_idx = outgoing_slice_idx;
+    unwind_byte_idx = tcp->outgoing_byte_idx;
+    for (iov_size = 0; outgoing_slice_idx != tcp->outgoing_buffer->count &&
+                       iov_size != MAX_WRITE_IOVEC;
+         iov_size++) {
+      iov[iov_size].iov_base =
+          GRPC_SLICE_START_PTR(
+              tcp->outgoing_buffer->slices[outgoing_slice_idx]) +
+          tcp->outgoing_byte_idx;
+      iov[iov_size].iov_len =
+          GRPC_SLICE_LENGTH(tcp->outgoing_buffer->slices[outgoing_slice_idx]) -
+          tcp->outgoing_byte_idx;
+      sending_length += iov[iov_size].iov_len;
+      outgoing_slice_idx++;
+      tcp->outgoing_byte_idx = 0;
+    }
+    GPR_ASSERT(iov_size > 0);
+
+    msg.msg_name = nullptr;
+    msg.msg_namelen = 0;
+    msg.msg_iov = iov;
+    msg.msg_iovlen = iov_size;
+    msg.msg_flags = 0;
+    bool tried_sending_message = false;
+    if (tcp->outgoing_buffer_arg != nullptr) {
+      if (!tcp->ts_capable ||
+          !tcp_write_with_timestamps(tcp, &msg, sending_length, &sent_length)) {
+        /* We could not set socket options to collect Fathom timestamps.
+         * Fallback on writing without timestamps. */
+        tcp->ts_capable = false;
+        tcp_shutdown_buffer_list(tcp);
+      } else {
+        tried_sending_message = true;
+      }
+    }
+    if (!tried_sending_message) {
+      msg.msg_control = nullptr;
+      msg.msg_controllen = 0;
+
+      GRPC_STATS_INC_TCP_WRITE_SIZE(sending_length);
+      GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(iov_size);
+
+      sent_length = tcp_send(tcp->fd, &msg);
+    }
+
+    if (sent_length < 0) {
+      if (errno == EAGAIN) {
+        tcp->outgoing_byte_idx = unwind_byte_idx;
+        // unref all and forget about all slices that have been written to this
+        // point
+        for (size_t idx = 0; idx < unwind_slice_idx; ++idx) {
+          grpc_slice_buffer_remove_first(tcp->outgoing_buffer);
+        }
+        return false;
+      } else if (errno == EPIPE) {
+        *error = tcp_annotate_error(GRPC_OS_ERROR(errno, "sendmsg"), tcp);
+        grpc_slice_buffer_reset_and_unref_internal(tcp->outgoing_buffer);
+        tcp_shutdown_buffer_list(tcp);
+        return true;
+      } else {
+        *error = tcp_annotate_error(GRPC_OS_ERROR(errno, "sendmsg"), tcp);
+        grpc_slice_buffer_reset_and_unref_internal(tcp->outgoing_buffer);
+        tcp_shutdown_buffer_list(tcp);
+        return true;
+      }
+    }
+
+    GPR_ASSERT(tcp->outgoing_byte_idx == 0);
+    tcp->bytes_counter += sent_length;
+    trailing = sending_length - static_cast<size_t>(sent_length);
+    while (trailing > 0) {
+      size_t slice_length;
+
+      outgoing_slice_idx--;
+      slice_length =
+          GRPC_SLICE_LENGTH(tcp->outgoing_buffer->slices[outgoing_slice_idx]);
+      if (slice_length > trailing) {
+        tcp->outgoing_byte_idx = slice_length - trailing;
+        break;
+      } else {
+        trailing -= slice_length;
+      }
+    }
+    if (outgoing_slice_idx == tcp->outgoing_buffer->count) {
+      *error = GRPC_ERROR_NONE;
+      grpc_slice_buffer_reset_and_unref_internal(tcp->outgoing_buffer);
+      return true;
+    }
+  }
+}
+
+static void tcp_handle_write(void* arg /* grpc_tcp */, grpc_error* error) {
+  grpc_tcp* tcp = static_cast<grpc_tcp*>(arg);
+  grpc_closure* cb;
+
+  if (error != GRPC_ERROR_NONE) {
+    cb = tcp->write_cb;
+    tcp->write_cb = nullptr;
+    if (tcp->current_zerocopy_send != nullptr) {
+      UnrefMaybePutZerocopySendRecord(tcp, tcp->current_zerocopy_send, 0,
+                                      "handle_write_err");
+      tcp->current_zerocopy_send = nullptr;
+    }
+    grpc_core::Closure::Run(DEBUG_LOCATION, cb, GRPC_ERROR_REF(error));
+    TCP_UNREF(tcp, "write");
+    return;
+  }
+
+  bool flush_result =
+      tcp->current_zerocopy_send != nullptr
+          ? tcp_flush_zerocopy(tcp, tcp->current_zerocopy_send, &error)
+          : tcp_flush(tcp, &error);
+  if (!flush_result) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "write: delayed");
+    }
+    notify_on_write(tcp);
+    // tcp_flush does not populate error if it has returned false.
+    GPR_DEBUG_ASSERT(error == GRPC_ERROR_NONE);
+  } else {
+    cb = tcp->write_cb;
+    tcp->write_cb = nullptr;
+    tcp->current_zerocopy_send = nullptr;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      const char* str = grpc_error_string(error);
+      gpr_log(GPR_INFO, "write: %s", str);
+    }
+    // No need to take a ref on error since tcp_flush provides a ref.
+    grpc_core::Closure::Run(DEBUG_LOCATION, cb, error);
+    TCP_UNREF(tcp, "write");
+  }
+}
+
+static void tcp_write(grpc_endpoint* ep, grpc_slice_buffer* buf,
+                      grpc_closure* cb, void* arg) {
+  GPR_TIMER_SCOPE("tcp_write", 0);
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  grpc_error* error = GRPC_ERROR_NONE;
+  TcpZerocopySendRecord* zerocopy_send_record = nullptr;
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    size_t i;
+
+    for (i = 0; i < buf->count; i++) {
+      gpr_log(GPR_INFO, "WRITE %p (peer=%s)", tcp, tcp->peer_string);
+      if (gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
+        char* data =
+            grpc_dump_slice(buf->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
+        gpr_log(GPR_DEBUG, "DATA: %s", data);
+        gpr_free(data);
+      }
+    }
+  }
+
+  GPR_ASSERT(tcp->write_cb == nullptr);
+  GPR_DEBUG_ASSERT(tcp->current_zerocopy_send == nullptr);
+
+  if (buf->length == 0) {
+    grpc_core::Closure::Run(
+        DEBUG_LOCATION, cb,
+        grpc_fd_is_shutdown(tcp->em_fd)
+            ? tcp_annotate_error(GRPC_ERROR_CREATE_FROM_STATIC_STRING("EOF"),
+                                 tcp)
+            : GRPC_ERROR_NONE);
+    tcp_shutdown_buffer_list(tcp);
+    return;
+  }
+
+  zerocopy_send_record = tcp_get_send_zerocopy_record(tcp, buf);
+  if (zerocopy_send_record == nullptr) {
+    // Either not enough bytes, or couldn't allocate a zerocopy context.
+    tcp->outgoing_buffer = buf;
+    tcp->outgoing_byte_idx = 0;
+  }
+  tcp->outgoing_buffer_arg = arg;
+  if (arg) {
+    GPR_ASSERT(grpc_event_engine_can_track_errors());
+  }
+
+  bool flush_result =
+      zerocopy_send_record != nullptr
+          ? tcp_flush_zerocopy(tcp, zerocopy_send_record, &error)
+          : tcp_flush(tcp, &error);
+  if (!flush_result) {
+    TCP_REF(tcp, "write");
+    tcp->write_cb = cb;
+    tcp->current_zerocopy_send = zerocopy_send_record;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "write: delayed");
+    }
+    notify_on_write(tcp);
+  } else {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      const char* str = grpc_error_string(error);
+      gpr_log(GPR_INFO, "write: %s", str);
+    }
+    grpc_core::Closure::Run(DEBUG_LOCATION, cb, error);
+  }
+}
+
+static void tcp_add_to_pollset(grpc_endpoint* ep, grpc_pollset* pollset) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  grpc_pollset_add_fd(pollset, tcp->em_fd);
+}
+
+static void tcp_add_to_pollset_set(grpc_endpoint* ep,
+                                   grpc_pollset_set* pollset_set) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  grpc_pollset_set_add_fd(pollset_set, tcp->em_fd);
+}
+
+static void tcp_delete_from_pollset_set(grpc_endpoint* ep,
+                                        grpc_pollset_set* pollset_set) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  ZerocopyDisableAndWaitForRemaining(tcp);
+  grpc_pollset_set_del_fd(pollset_set, tcp->em_fd);
+}
+
+static char* tcp_get_peer(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  return gpr_strdup(tcp->peer_string);
+}
+
+static int tcp_get_fd(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  return tcp->fd;
+}
+
+static grpc_resource_user* tcp_get_resource_user(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  return tcp->resource_user;
+}
+
+static bool tcp_can_track_err(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  if (!grpc_event_engine_can_track_errors()) {
+    return false;
+  }
+  struct sockaddr addr;
+  socklen_t len = sizeof(addr);
+  if (getsockname(tcp->fd, &addr, &len) < 0) {
+    return false;
+  }
+  if (addr.sa_family == AF_INET || addr.sa_family == AF_INET6) {
+    return true;
+  }
+  return false;
+}
+
+static const grpc_endpoint_vtable vtable = {tcp_read,
+                                            tcp_write,
+                                            tcp_add_to_pollset,
+                                            tcp_add_to_pollset_set,
+                                            tcp_delete_from_pollset_set,
+                                            tcp_shutdown,
+                                            tcp_destroy,
+                                            tcp_get_resource_user,
+                                            tcp_get_peer,
+                                            tcp_get_fd,
+                                            tcp_can_track_err};
+
+#define MAX_CHUNK_SIZE 32 * 1024 * 1024
+
+grpc_endpoint* grpc_tcp_create(grpc_fd* em_fd,
+                               const grpc_channel_args* channel_args,
+                               const char* peer_string) {
+  static constexpr bool kZerocpTxEnabledDefault = false;
+  int tcp_read_chunk_size = GRPC_TCP_DEFAULT_READ_SLICE_SIZE;
+  int tcp_max_read_chunk_size = 4 * 1024 * 1024;
+  int tcp_min_read_chunk_size = 256;
+  bool tcp_tx_zerocopy_enabled = kZerocpTxEnabledDefault;
+  int tcp_tx_zerocopy_send_bytes_thresh =
+      grpc_core::TcpZerocopySendCtx::kDefaultSendBytesThreshold;
+  int tcp_tx_zerocopy_max_simult_sends =
+      grpc_core::TcpZerocopySendCtx::kDefaultMaxSends;
+  grpc_resource_quota* resource_quota = grpc_resource_quota_create(nullptr);
+  if (channel_args != nullptr) {
+    for (size_t i = 0; i < channel_args->num_args; i++) {
+      if (0 ==
+          strcmp(channel_args->args[i].key, GRPC_ARG_TCP_READ_CHUNK_SIZE)) {
+        grpc_integer_options options = {tcp_read_chunk_size, 1, MAX_CHUNK_SIZE};
+        tcp_read_chunk_size =
+            grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_TCP_MIN_READ_CHUNK_SIZE)) {
+        grpc_integer_options options = {tcp_read_chunk_size, 1, MAX_CHUNK_SIZE};
+        tcp_min_read_chunk_size =
+            grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_TCP_MAX_READ_CHUNK_SIZE)) {
+        grpc_integer_options options = {tcp_read_chunk_size, 1, MAX_CHUNK_SIZE};
+        tcp_max_read_chunk_size =
+            grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      } else if (0 ==
+                 strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
+        grpc_resource_quota_unref_internal(resource_quota);
+        resource_quota =
+            grpc_resource_quota_ref_internal(static_cast<grpc_resource_quota*>(
+                channel_args->args[i].value.pointer.p));
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_TCP_TX_ZEROCOPY_ENABLED)) {
+        tcp_tx_zerocopy_enabled = grpc_channel_arg_get_bool(
+            &channel_args->args[i], kZerocpTxEnabledDefault);
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_TCP_TX_ZEROCOPY_SEND_BYTES_THRESHOLD)) {
+        grpc_integer_options options = {
+            grpc_core::TcpZerocopySendCtx::kDefaultSendBytesThreshold, 0,
+            INT_MAX};
+        tcp_tx_zerocopy_send_bytes_thresh =
+            grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      } else if (0 == strcmp(channel_args->args[i].key,
+                             GRPC_ARG_TCP_TX_ZEROCOPY_MAX_SIMULT_SENDS)) {
+        grpc_integer_options options = {
+            grpc_core::TcpZerocopySendCtx::kDefaultMaxSends, 0, INT_MAX};
+        tcp_tx_zerocopy_max_simult_sends =
+            grpc_channel_arg_get_integer(&channel_args->args[i], options);
+      }
+    }
+  }
+
+  if (tcp_min_read_chunk_size > tcp_max_read_chunk_size) {
+    tcp_min_read_chunk_size = tcp_max_read_chunk_size;
+  }
+  tcp_read_chunk_size = GPR_CLAMP(tcp_read_chunk_size, tcp_min_read_chunk_size,
+                                  tcp_max_read_chunk_size);
+
+  grpc_tcp* tcp = static_cast<grpc_tcp*>(gpr_malloc(sizeof(grpc_tcp)));
+  tcp->base.vtable = &vtable;
+  tcp->peer_string = gpr_strdup(peer_string);
+  tcp->fd = grpc_fd_wrapped_fd(em_fd);
+  tcp->read_cb = nullptr;
+  tcp->write_cb = nullptr;
+  tcp->current_zerocopy_send = nullptr;
+  tcp->release_fd_cb = nullptr;
+  tcp->release_fd = nullptr;
+  tcp->incoming_buffer = nullptr;
+  tcp->target_length = static_cast<double>(tcp_read_chunk_size);
+  tcp->min_read_chunk_size = tcp_min_read_chunk_size;
+  tcp->max_read_chunk_size = tcp_max_read_chunk_size;
+  tcp->bytes_read_this_round = 0;
+  /* Will be set to false by the very first endpoint read function */
+  tcp->is_first_read = true;
+  tcp->bytes_counter = -1;
+  tcp->socket_ts_enabled = false;
+  tcp->ts_capable = true;
+  tcp->outgoing_buffer_arg = nullptr;
+  new (&tcp->tcp_zerocopy_send_ctx) TcpZerocopySendCtx(
+      tcp_tx_zerocopy_max_simult_sends, tcp_tx_zerocopy_send_bytes_thresh);
+  if (tcp_tx_zerocopy_enabled && !tcp->tcp_zerocopy_send_ctx.memory_limited()) {
+#ifdef GRPC_LINUX_ERRQUEUE
+    const int enable = 1;
+    auto err =
+        setsockopt(tcp->fd, SOL_SOCKET, SO_ZEROCOPY, &enable, sizeof(enable));
+    if (err == 0) {
+      tcp->tcp_zerocopy_send_ctx.set_enabled(true);
+    } else {
+      gpr_log(GPR_ERROR, "Failed to set zerocopy options on the socket.");
+    }
+#endif
+  }
+  /* paired with unref in grpc_tcp_destroy */
+  new (&tcp->refcount) grpc_core::RefCount(1, &grpc_tcp_trace);
+  gpr_atm_no_barrier_store(&tcp->shutdown_count, 0);
+  tcp->em_fd = em_fd;
+  grpc_slice_buffer_init(&tcp->last_read_buffer);
+  tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
+  grpc_resource_user_slice_allocator_init(
+      &tcp->slice_allocator, tcp->resource_user, tcp_read_allocation_done, tcp);
+  grpc_resource_quota_unref_internal(resource_quota);
+  gpr_mu_init(&tcp->tb_mu);
+  tcp->tb_head = nullptr;
+  GRPC_CLOSURE_INIT(&tcp->read_done_closure, tcp_handle_read, tcp,
+                    grpc_schedule_on_exec_ctx);
+  if (grpc_event_engine_run_in_background()) {
+    // If there is a polling engine always running in the background, there is
+    // no need to run the backup poller.
+    GRPC_CLOSURE_INIT(&tcp->write_done_closure, tcp_handle_write, tcp,
+                      grpc_schedule_on_exec_ctx);
+  } else {
+    GRPC_CLOSURE_INIT(&tcp->write_done_closure,
+                      tcp_drop_uncovered_then_handle_write, tcp,
+                      grpc_schedule_on_exec_ctx);
+  }
+  /* Always assume there is something on the queue to read. */
+  tcp->inq = 1;
+#ifdef GRPC_HAVE_TCP_INQ
+  int one = 1;
+  if (setsockopt(tcp->fd, SOL_TCP, TCP_INQ, &one, sizeof(one)) == 0) {
+    tcp->inq_capable = true;
+  } else {
+    gpr_log(GPR_DEBUG, "cannot set inq fd=%d errno=%d", tcp->fd, errno);
+    tcp->inq_capable = false;
+  }
+#else
+  tcp->inq_capable = false;
+#endif /* GRPC_HAVE_TCP_INQ */
+  /* Start being notified on errors if event engine can track errors. */
+  if (grpc_event_engine_can_track_errors()) {
+    /* Grab a ref to tcp so that we can safely access the tcp struct when
+     * processing errors. We unref when we no longer want to track errors
+     * separately. */
+    TCP_REF(tcp, "error-tracking");
+    gpr_atm_rel_store(&tcp->stop_error_notification, 0);
+    GRPC_CLOSURE_INIT(&tcp->error_closure, tcp_handle_error, tcp,
+                      grpc_schedule_on_exec_ctx);
+    grpc_fd_notify_on_error(tcp->em_fd, &tcp->error_closure);
+  }
+
+  return &tcp->base;
+}
+
+int grpc_tcp_fd(grpc_endpoint* ep) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  GPR_ASSERT(ep->vtable == &vtable);
+  return grpc_fd_wrapped_fd(tcp->em_fd);
+}
+
+void grpc_tcp_destroy_and_release_fd(grpc_endpoint* ep, int* fd,
+                                     grpc_closure* done) {
+  grpc_tcp* tcp = reinterpret_cast<grpc_tcp*>(ep);
+  GPR_ASSERT(ep->vtable == &vtable);
+  tcp->release_fd = fd;
+  tcp->release_fd_cb = done;
+  grpc_slice_buffer_reset_and_unref_internal(&tcp->last_read_buffer);
+  if (grpc_event_engine_can_track_errors()) {
+    /* Stop errors notification. */
+    ZerocopyDisableAndWaitForRemaining(tcp);
+    gpr_atm_no_barrier_store(&tcp->stop_error_notification, true);
+    grpc_fd_set_error(tcp->em_fd);
+  }
+  TCP_UNREF(tcp, "destroy");
+}
+
+#endif /* GRPC_POSIX_SOCKET_TCP */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.h
new file mode 100644
index 0000000..eff825c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_posix.h	
@@ -0,0 +1,60 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/buffer_list.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+/* Create a tcp endpoint given a file desciptor and a read slice size.
+   Takes ownership of fd. */
+grpc_endpoint* grpc_tcp_create(grpc_fd* fd, const grpc_channel_args* args,
+                               const char* peer_string);
+
+/* Return the tcp endpoint's fd, or -1 if this is not available. Does not
+   release the fd.
+   Requires: ep must be a tcp endpoint.
+ */
+int grpc_tcp_fd(grpc_endpoint* ep);
+
+/* Destroy the tcp endpoint without closing its fd. *fd will be set and done
+ * will be called when the endpoint is destroyed.
+ * Requires: ep must be a tcp endpoint and fd must not be NULL. */
+void grpc_tcp_destroy_and_release_fd(grpc_endpoint* ep, int* fd,
+                                     grpc_closure* done);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.cc
new file mode 100644
index 0000000..f2e4b1b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.cc	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/tcp_server.h"
+
+grpc_tcp_server_vtable* grpc_tcp_server_impl;
+
+grpc_error* grpc_tcp_server_create(grpc_closure* shutdown_complete,
+                                   const grpc_channel_args* args,
+                                   grpc_tcp_server** server) {
+  return grpc_tcp_server_impl->create(shutdown_complete, args, server);
+}
+
+void grpc_tcp_server_start(grpc_tcp_server* server, grpc_pollset** pollsets,
+                           size_t pollset_count,
+                           grpc_tcp_server_cb on_accept_cb, void* cb_arg) {
+  grpc_tcp_server_impl->start(server, pollsets, pollset_count, on_accept_cb,
+                              cb_arg);
+}
+
+grpc_error* grpc_tcp_server_add_port(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     int* out_port) {
+  return grpc_tcp_server_impl->add_port(s, addr, out_port);
+}
+
+grpc_core::TcpServerFdHandler* grpc_tcp_server_create_fd_handler(
+    grpc_tcp_server* s) {
+  return grpc_tcp_server_impl->create_fd_handler(s);
+}
+
+unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server* s,
+                                       unsigned port_index) {
+  return grpc_tcp_server_impl->port_fd_count(s, port_index);
+}
+
+int grpc_tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+                            unsigned fd_index) {
+  return grpc_tcp_server_impl->port_fd(s, port_index, fd_index);
+}
+
+grpc_tcp_server* grpc_tcp_server_ref(grpc_tcp_server* s) {
+  return grpc_tcp_server_impl->ref(s);
+}
+
+void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                           grpc_closure* shutdown_starting) {
+  grpc_tcp_server_impl->shutdown_starting_add(s, shutdown_starting);
+}
+
+void grpc_tcp_server_unref(grpc_tcp_server* s) {
+  grpc_tcp_server_impl->unref(s);
+}
+
+void grpc_tcp_server_shutdown_listeners(grpc_tcp_server* s) {
+  grpc_tcp_server_impl->shutdown_listeners(s);
+}
+
+void grpc_set_tcp_server_impl(grpc_tcp_server_vtable* impl) {
+  grpc_tcp_server_impl = impl;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.h
new file mode 100644
index 0000000..0af8a79
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server.h	
@@ -0,0 +1,143 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/grpc_types.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Forward decl of grpc_tcp_server */
+typedef struct grpc_tcp_server grpc_tcp_server;
+
+typedef struct grpc_tcp_server_acceptor {
+  /* grpc_tcp_server_cb functions share a ref on from_server that is valid
+     until the function returns. */
+  grpc_tcp_server* from_server;
+  /* Indices that may be passed to grpc_tcp_server_port_fd(). */
+  unsigned port_index;
+  unsigned fd_index;
+  /* Data when the connection is passed to tcp_server from external. */
+  bool external_connection;
+  int listener_fd;
+  grpc_byte_buffer* pending_data;
+} grpc_tcp_server_acceptor;
+
+/* Called for newly connected TCP connections.
+   Takes ownership of acceptor. */
+typedef void (*grpc_tcp_server_cb)(void* arg, grpc_endpoint* ep,
+                                   grpc_pollset* accepting_pollset,
+                                   grpc_tcp_server_acceptor* acceptor);
+namespace grpc_core {
+// An interface for a handler to take a externally connected fd as a internal
+// connection.
+class TcpServerFdHandler {
+ public:
+  virtual ~TcpServerFdHandler() = default;
+  virtual void Handle(int listener_fd, int fd,
+                      grpc_byte_buffer* pending_read) = 0;
+};
+}  // namespace grpc_core
+
+typedef struct grpc_tcp_server_vtable {
+  grpc_error* (*create)(grpc_closure* shutdown_complete,
+                        const grpc_channel_args* args,
+                        grpc_tcp_server** server);
+  void (*start)(grpc_tcp_server* server, grpc_pollset** pollsets,
+                size_t pollset_count, grpc_tcp_server_cb on_accept_cb,
+                void* cb_arg);
+  grpc_error* (*add_port)(grpc_tcp_server* s, const grpc_resolved_address* addr,
+                          int* out_port);
+  grpc_core::TcpServerFdHandler* (*create_fd_handler)(grpc_tcp_server* s);
+  unsigned (*port_fd_count)(grpc_tcp_server* s, unsigned port_index);
+  int (*port_fd)(grpc_tcp_server* s, unsigned port_index, unsigned fd_index);
+  grpc_tcp_server* (*ref)(grpc_tcp_server* s);
+  void (*shutdown_starting_add)(grpc_tcp_server* s,
+                                grpc_closure* shutdown_starting);
+  void (*unref)(grpc_tcp_server* s);
+  void (*shutdown_listeners)(grpc_tcp_server* s);
+} grpc_tcp_server_vtable;
+
+/* Create a server, initially not bound to any ports. The caller owns one ref.
+   If shutdown_complete is not NULL, it will be used by
+   grpc_tcp_server_unref() when the ref count reaches zero. */
+grpc_error* grpc_tcp_server_create(grpc_closure* shutdown_complete,
+                                   const grpc_channel_args* args,
+                                   grpc_tcp_server** server);
+
+/* Start listening to bound ports */
+void grpc_tcp_server_start(grpc_tcp_server* server, grpc_pollset** pollsets,
+                           size_t pollset_count,
+                           grpc_tcp_server_cb on_accept_cb, void* cb_arg);
+
+/* Add a port to the server, returning the newly allocated port on success, or
+   -1 on failure.
+
+   The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
+   both IPv4 and IPv6 connections, but :: is the preferred style.  This usually
+   creates one socket, but possibly two on systems which support IPv6,
+   but not dualstack sockets. */
+/* TODO(ctiller): deprecate this, and make grpc_tcp_server_add_ports to handle
+                  all of the multiple socket port matching logic in one place */
+grpc_error* grpc_tcp_server_add_port(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     int* out_port);
+
+/* Create and return a TcpServerFdHandler so that it can be used by upper layer
+   to hand over an externally connected fd to the grpc server. */
+grpc_core::TcpServerFdHandler* grpc_tcp_server_create_fd_handler(
+    grpc_tcp_server* s);
+
+/* Number of fds at the given port_index, or 0 if port_index is out of
+   bounds. */
+unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server* s, unsigned port_index);
+
+/* Returns the file descriptor of the Mth (fd_index) listening socket of the Nth
+   (port_index) call to add_port() on this server, or -1 if the indices are out
+   of bounds. The file descriptor remains owned by the server, and will be
+   cleaned up when the ref count reaches zero. */
+int grpc_tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+                            unsigned fd_index);
+
+/* Ref s and return s. */
+grpc_tcp_server* grpc_tcp_server_ref(grpc_tcp_server* s);
+
+/* shutdown_starting is called when ref count has reached zero and the server is
+   about to be destroyed. The server will be deleted after it returns. Calling
+   grpc_tcp_server_ref() from it has no effect. */
+void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                           grpc_closure* shutdown_starting);
+
+/* If the refcount drops to zero, enqueue calls on exec_ctx to
+   shutdown_listeners and delete s. */
+void grpc_tcp_server_unref(grpc_tcp_server* s);
+
+/* Shutdown the fds of listeners. */
+void grpc_tcp_server_shutdown_listeners(grpc_tcp_server* s);
+
+void grpc_tcp_server_global_init();
+
+void grpc_set_tcp_server_impl(grpc_tcp_server_vtable* impl);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_custom.cc
new file mode 100644
index 0000000..8de1258
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_custom.cc	
@@ -0,0 +1,489 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+extern grpc_socket_vtable* grpc_custom_socket_vtable;
+
+/* one listening port */
+struct grpc_tcp_listener {
+  grpc_tcp_server* server;
+  unsigned port_index;
+  int port;
+
+  grpc_custom_socket* socket;
+
+  /* linked list */
+  struct grpc_tcp_listener* next;
+
+  bool closed;
+};
+
+struct grpc_tcp_server {
+  gpr_refcount refs;
+
+  /* Called whenever accept() succeeds on a server port. */
+  grpc_tcp_server_cb on_accept_cb;
+  void* on_accept_cb_arg;
+
+  int open_ports;
+
+  /* linked list of server ports */
+  grpc_tcp_listener* head;
+  grpc_tcp_listener* tail;
+
+  /* List of closures passed to shutdown_starting_add(). */
+  grpc_closure_list shutdown_starting;
+
+  /* shutdown callback */
+  grpc_closure* shutdown_complete;
+
+  bool shutdown;
+  bool so_reuseport;
+
+  grpc_resource_quota* resource_quota;
+};
+
+static grpc_error* tcp_server_create(grpc_closure* shutdown_complete,
+                                     const grpc_channel_args* args,
+                                     grpc_tcp_server** server) {
+  grpc_tcp_server* s = (grpc_tcp_server*)gpr_malloc(sizeof(grpc_tcp_server));
+  // Let the implementation decide if so_reuseport can be enabled or not.
+  s->so_reuseport = true;
+  s->resource_quota = grpc_resource_quota_create(nullptr);
+  for (size_t i = 0; i < (args == nullptr ? 0 : args->num_args); i++) {
+    if (!grpc_channel_args_find_bool(args, GRPC_ARG_ALLOW_REUSEPORT, true)) {
+      s->so_reuseport = false;
+    }
+    if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) {
+      if (args->args[i].type == GRPC_ARG_POINTER) {
+        grpc_resource_quota_unref_internal(s->resource_quota);
+        s->resource_quota = grpc_resource_quota_ref_internal(
+            (grpc_resource_quota*)args->args[i].value.pointer.p);
+      } else {
+        grpc_resource_quota_unref_internal(s->resource_quota);
+        gpr_free(s);
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            GRPC_ARG_RESOURCE_QUOTA " must be a pointer to a buffer pool");
+      }
+    }
+  }
+  gpr_ref_init(&s->refs, 1);
+  s->on_accept_cb = nullptr;
+  s->on_accept_cb_arg = nullptr;
+  s->open_ports = 0;
+  s->head = nullptr;
+  s->tail = nullptr;
+  s->shutdown_starting.head = nullptr;
+  s->shutdown_starting.tail = nullptr;
+  s->shutdown_complete = shutdown_complete;
+  s->shutdown = false;
+  *server = s;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_tcp_server* tcp_server_ref(grpc_tcp_server* s) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  gpr_ref(&s->refs);
+  return s;
+}
+
+static void tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                             grpc_closure* shutdown_starting) {
+  grpc_closure_list_append(&s->shutdown_starting, shutdown_starting,
+                           GRPC_ERROR_NONE);
+}
+
+static void finish_shutdown(grpc_tcp_server* s) {
+  GPR_ASSERT(s->shutdown);
+  if (s->shutdown_complete != nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->shutdown_complete,
+                            GRPC_ERROR_NONE);
+  }
+
+  while (s->head) {
+    grpc_tcp_listener* sp = s->head;
+    s->head = sp->next;
+    sp->next = nullptr;
+    gpr_free(sp);
+  }
+  grpc_resource_quota_unref_internal(s->resource_quota);
+  gpr_free(s);
+}
+
+static void custom_close_callback(grpc_custom_socket* socket) {
+  grpc_tcp_listener* sp = socket->listener;
+  if (sp) {
+    grpc_core::ExecCtx exec_ctx;
+    sp->server->open_ports--;
+    if (sp->server->open_ports == 0 && sp->server->shutdown) {
+      finish_shutdown(sp->server);
+    }
+  }
+  socket->refs--;
+  if (socket->refs == 0) {
+    grpc_custom_socket_vtable->destroy(socket);
+    gpr_free(socket);
+  }
+}
+
+void grpc_custom_close_server_callback(grpc_tcp_listener* sp) {
+  if (sp) {
+    grpc_core::ExecCtx exec_ctx;
+    sp->server->open_ports--;
+    if (sp->server->open_ports == 0 && sp->server->shutdown) {
+      finish_shutdown(sp->server);
+    }
+  }
+}
+
+static void close_listener(grpc_tcp_listener* sp) {
+  grpc_custom_socket* socket = sp->socket;
+  if (!sp->closed) {
+    sp->closed = true;
+    grpc_custom_socket_vtable->close(socket, custom_close_callback);
+  }
+}
+
+static void tcp_server_destroy(grpc_tcp_server* s) {
+  int immediately_done = 0;
+  grpc_tcp_listener* sp;
+
+  GPR_ASSERT(!s->shutdown);
+  s->shutdown = true;
+
+  if (s->open_ports == 0) {
+    immediately_done = 1;
+  }
+  for (sp = s->head; sp; sp = sp->next) {
+    close_listener(sp);
+  }
+
+  if (immediately_done) {
+    finish_shutdown(s);
+  }
+}
+
+static void tcp_server_unref(grpc_tcp_server* s) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  if (gpr_unref(&s->refs)) {
+    /* Complete shutdown_starting work before destroying. */
+    grpc_core::ExecCtx exec_ctx;
+    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &s->shutdown_starting);
+    grpc_core::ExecCtx::Get()->Flush();
+    tcp_server_destroy(s);
+  }
+}
+
+static void finish_accept(grpc_tcp_listener* sp, grpc_custom_socket* socket) {
+  grpc_tcp_server_acceptor* acceptor =
+      (grpc_tcp_server_acceptor*)gpr_malloc(sizeof(*acceptor));
+  grpc_endpoint* ep = nullptr;
+  grpc_resolved_address peer_name;
+  char* peer_name_string;
+  grpc_error* err;
+
+  peer_name_string = nullptr;
+  memset(&peer_name, 0, sizeof(grpc_resolved_address));
+  peer_name.len = GRPC_MAX_SOCKADDR_SIZE;
+  err = grpc_custom_socket_vtable->getpeername(
+      socket, (grpc_sockaddr*)&peer_name.addr, (int*)&peer_name.len);
+  if (err == GRPC_ERROR_NONE) {
+    peer_name_string = grpc_sockaddr_to_uri(&peer_name);
+  } else {
+    GRPC_LOG_IF_ERROR("getpeername error", err);
+    GRPC_ERROR_UNREF(err);
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    if (peer_name_string) {
+      gpr_log(GPR_INFO, "SERVER_CONNECT: %p accepted connection: %s",
+              sp->server, peer_name_string);
+    } else {
+      gpr_log(GPR_INFO, "SERVER_CONNECT: %p accepted connection", sp->server);
+    }
+  }
+  ep = custom_tcp_endpoint_create(socket, sp->server->resource_quota,
+                                  peer_name_string);
+  acceptor->from_server = sp->server;
+  acceptor->port_index = sp->port_index;
+  acceptor->fd_index = 0;
+  acceptor->external_connection = false;
+  sp->server->on_accept_cb(sp->server->on_accept_cb_arg, ep, nullptr, acceptor);
+  gpr_free(peer_name_string);
+}
+
+static void custom_accept_callback(grpc_custom_socket* socket,
+                                   grpc_custom_socket* client,
+                                   grpc_error* error);
+
+static void custom_accept_callback(grpc_custom_socket* socket,
+                                   grpc_custom_socket* client,
+                                   grpc_error* error) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_tcp_listener* sp = socket->listener;
+  if (error != GRPC_ERROR_NONE) {
+    if (!sp->closed) {
+      gpr_log(GPR_ERROR, "Accept failed: %s", grpc_error_string(error));
+    }
+    gpr_free(client);
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  finish_accept(sp, client);
+  if (!sp->closed) {
+    grpc_custom_socket* new_socket =
+        (grpc_custom_socket*)gpr_malloc(sizeof(grpc_custom_socket));
+    new_socket->endpoint = nullptr;
+    new_socket->listener = nullptr;
+    new_socket->connector = nullptr;
+    new_socket->refs = 1;
+    grpc_custom_socket_vtable->accept(sp->socket, new_socket,
+                                      custom_accept_callback);
+  }
+}
+
+static grpc_error* add_socket_to_server(grpc_tcp_server* s,
+                                        grpc_custom_socket* socket,
+                                        const grpc_resolved_address* addr,
+                                        unsigned port_index,
+                                        grpc_tcp_listener** listener) {
+  grpc_tcp_listener* sp = nullptr;
+  int port = -1;
+  grpc_error* error;
+  grpc_resolved_address sockname_temp;
+
+  // NOTE(lidiz) The last argument is "flags" which is unused by other
+  // implementations. Python IO managers uses it to specify SO_REUSEPORT.
+  int flags = 0;
+  if (s->so_reuseport) {
+    flags |= GRPC_CUSTOM_SOCKET_OPT_SO_REUSEPORT;
+  }
+
+  error = grpc_custom_socket_vtable->bind(socket, (grpc_sockaddr*)addr->addr,
+                                          addr->len, flags);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+
+  error = grpc_custom_socket_vtable->listen(socket);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+
+  sockname_temp.len = GRPC_MAX_SOCKADDR_SIZE;
+  error = grpc_custom_socket_vtable->getsockname(
+      socket, (grpc_sockaddr*)&sockname_temp.addr, (int*)&sockname_temp.len);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+
+  port = grpc_sockaddr_get_port(&sockname_temp);
+
+  GPR_ASSERT(port >= 0);
+  GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
+  sp = (grpc_tcp_listener*)gpr_zalloc(sizeof(grpc_tcp_listener));
+  sp->next = nullptr;
+  if (s->head == nullptr) {
+    s->head = sp;
+  } else {
+    s->tail->next = sp;
+  }
+  s->tail = sp;
+  sp->server = s;
+  sp->socket = socket;
+  sp->port = port;
+  sp->port_index = port_index;
+  sp->closed = false;
+  s->open_ports++;
+  *listener = sp;
+
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* tcp_server_add_port(grpc_tcp_server* s,
+                                       const grpc_resolved_address* addr,
+                                       int* port) {
+  // This function is mostly copied from tcp_server_windows.c
+  grpc_tcp_listener* sp = nullptr;
+  grpc_custom_socket* socket;
+  grpc_resolved_address addr6_v4mapped;
+  grpc_resolved_address wildcard;
+  grpc_resolved_address* allocated_addr = nullptr;
+  grpc_resolved_address sockname_temp;
+  unsigned port_index = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+  int family;
+
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+
+  if (s->tail != nullptr) {
+    port_index = s->tail->port_index + 1;
+  }
+
+  /* Check if this is a wildcard port, and if so, try to keep the port the same
+     as some previously created listener. */
+  if (grpc_sockaddr_get_port(addr) == 0) {
+    for (sp = s->head; sp; sp = sp->next) {
+      socket = sp->socket;
+      sockname_temp.len = GRPC_MAX_SOCKADDR_SIZE;
+      if (nullptr == grpc_custom_socket_vtable->getsockname(
+                         socket, (grpc_sockaddr*)&sockname_temp.addr,
+                         (int*)&sockname_temp.len)) {
+        *port = grpc_sockaddr_get_port(&sockname_temp);
+        if (*port > 0) {
+          allocated_addr =
+              (grpc_resolved_address*)gpr_malloc(sizeof(grpc_resolved_address));
+          memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
+          grpc_sockaddr_set_port(allocated_addr, *port);
+          addr = allocated_addr;
+          break;
+        }
+      }
+    }
+  }
+
+  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
+    addr = &addr6_v4mapped;
+  }
+
+  /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
+  if (grpc_sockaddr_is_wildcard(addr, port)) {
+    grpc_sockaddr_make_wildcard6(*port, &wildcard);
+
+    addr = &wildcard;
+  }
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    char* port_string;
+    grpc_sockaddr_to_string(&port_string, addr, 0);
+    const char* str = grpc_error_string(error);
+    if (port_string) {
+      gpr_log(GPR_INFO, "SERVER %p add_port %s error=%s", s, port_string, str);
+      gpr_free(port_string);
+    } else {
+      gpr_log(GPR_INFO, "SERVER %p add_port error=%s", s, str);
+    }
+  }
+
+  family = grpc_sockaddr_get_family(addr);
+  socket = (grpc_custom_socket*)gpr_malloc(sizeof(grpc_custom_socket));
+  socket->refs = 1;
+  socket->endpoint = nullptr;
+  socket->listener = nullptr;
+  socket->connector = nullptr;
+  error = grpc_custom_socket_vtable->init(socket, family);
+
+  if (error == GRPC_ERROR_NONE) {
+    error = add_socket_to_server(s, socket, addr, port_index, &sp);
+  }
+  gpr_free(allocated_addr);
+
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error* error_out = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Failed to add port to server", &error, 1);
+    GRPC_ERROR_UNREF(error);
+    error = error_out;
+    *port = -1;
+  } else {
+    GPR_ASSERT(sp != nullptr);
+    *port = sp->port;
+  }
+  socket->listener = sp;
+  return error;
+}
+
+static void tcp_server_start(grpc_tcp_server* server, grpc_pollset** pollsets,
+                             size_t pollset_count,
+                             grpc_tcp_server_cb on_accept_cb, void* cb_arg) {
+  grpc_tcp_listener* sp;
+  (void)pollsets;
+  (void)pollset_count;
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+    gpr_log(GPR_INFO, "SERVER_START %p", server);
+  }
+  GPR_ASSERT(on_accept_cb);
+  GPR_ASSERT(!server->on_accept_cb);
+  server->on_accept_cb = on_accept_cb;
+  server->on_accept_cb_arg = cb_arg;
+  for (sp = server->head; sp; sp = sp->next) {
+    grpc_custom_socket* new_socket =
+        (grpc_custom_socket*)gpr_malloc(sizeof(grpc_custom_socket));
+    new_socket->endpoint = nullptr;
+    new_socket->listener = nullptr;
+    new_socket->connector = nullptr;
+    new_socket->refs = 1;
+    grpc_custom_socket_vtable->accept(sp->socket, new_socket,
+                                      custom_accept_callback);
+  }
+}
+
+static unsigned tcp_server_port_fd_count(grpc_tcp_server* /*s*/,
+                                         unsigned /*port_index*/) {
+  return 0;
+}
+
+static int tcp_server_port_fd(grpc_tcp_server* /*s*/, unsigned /*port_index*/,
+                              unsigned /*fd_index*/) {
+  return -1;
+}
+
+static void tcp_server_shutdown_listeners(grpc_tcp_server* s) {
+  for (grpc_tcp_listener* sp = s->head; sp; sp = sp->next) {
+    if (!sp->closed) {
+      sp->closed = true;
+      grpc_custom_socket_vtable->close(sp->socket, custom_close_callback);
+    }
+  }
+}
+
+static grpc_core::TcpServerFdHandler* tcp_server_create_fd_handler(
+    grpc_tcp_server* /*s*/) {
+  return nullptr;
+}
+
+grpc_tcp_server_vtable custom_tcp_server_vtable = {
+    tcp_server_create,        tcp_server_start,
+    tcp_server_add_port,      tcp_server_create_fd_handler,
+    tcp_server_port_fd_count, tcp_server_port_fd,
+    tcp_server_ref,           tcp_server_shutdown_starting_add,
+    tcp_server_unref,         tcp_server_shutdown_listeners};
+
+#ifdef GRPC_UV_TEST
+grpc_tcp_server_vtable* default_tcp_server_vtable = &custom_tcp_server_vtable;
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_posix.cc
new file mode 100644
index 0000000..25f2e77
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_posix.cc	
@@ -0,0 +1,637 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* FIXME: "posix" files shouldn't be depending on _GNU_SOURCE */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP_SERVER
+
+#include <errno.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/tcp_server_utils_posix.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+static grpc_error* tcp_server_create(grpc_closure* shutdown_complete,
+                                     const grpc_channel_args* args,
+                                     grpc_tcp_server** server) {
+  grpc_tcp_server* s =
+      static_cast<grpc_tcp_server*>(gpr_zalloc(sizeof(grpc_tcp_server)));
+  s->so_reuseport = grpc_is_socket_reuse_port_supported();
+  s->expand_wildcard_addrs = false;
+  for (size_t i = 0; i < (args == nullptr ? 0 : args->num_args); i++) {
+    if (0 == strcmp(GRPC_ARG_ALLOW_REUSEPORT, args->args[i].key)) {
+      if (args->args[i].type == GRPC_ARG_INTEGER) {
+        s->so_reuseport = grpc_is_socket_reuse_port_supported() &&
+                          (args->args[i].value.integer != 0);
+      } else {
+        gpr_free(s);
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(GRPC_ARG_ALLOW_REUSEPORT
+                                                    " must be an integer");
+      }
+    } else if (0 == strcmp(GRPC_ARG_EXPAND_WILDCARD_ADDRS, args->args[i].key)) {
+      if (args->args[i].type == GRPC_ARG_INTEGER) {
+        s->expand_wildcard_addrs = (args->args[i].value.integer != 0);
+      } else {
+        gpr_free(s);
+        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            GRPC_ARG_EXPAND_WILDCARD_ADDRS " must be an integer");
+      }
+    }
+  }
+  gpr_ref_init(&s->refs, 1);
+  gpr_mu_init(&s->mu);
+  s->active_ports = 0;
+  s->destroyed_ports = 0;
+  s->shutdown = false;
+  s->shutdown_starting.head = nullptr;
+  s->shutdown_starting.tail = nullptr;
+  s->shutdown_complete = shutdown_complete;
+  s->on_accept_cb = nullptr;
+  s->on_accept_cb_arg = nullptr;
+  s->head = nullptr;
+  s->tail = nullptr;
+  s->nports = 0;
+  s->channel_args = grpc_channel_args_copy(args);
+  s->fd_handler = nullptr;
+  gpr_atm_no_barrier_store(&s->next_pollset_to_assign, 0);
+  *server = s;
+  return GRPC_ERROR_NONE;
+}
+
+static void finish_shutdown(grpc_tcp_server* s) {
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(s->shutdown);
+  gpr_mu_unlock(&s->mu);
+  if (s->shutdown_complete != nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->shutdown_complete,
+                            GRPC_ERROR_NONE);
+  }
+
+  gpr_mu_destroy(&s->mu);
+
+  while (s->head) {
+    grpc_tcp_listener* sp = s->head;
+    s->head = sp->next;
+    gpr_free(sp);
+  }
+  grpc_channel_args_destroy(s->channel_args);
+  delete s->fd_handler;
+
+  gpr_free(s);
+}
+
+static void destroyed_port(void* server, grpc_error* /*error*/) {
+  grpc_tcp_server* s = static_cast<grpc_tcp_server*>(server);
+  gpr_mu_lock(&s->mu);
+  s->destroyed_ports++;
+  if (s->destroyed_ports == s->nports) {
+    gpr_mu_unlock(&s->mu);
+    finish_shutdown(s);
+  } else {
+    GPR_ASSERT(s->destroyed_ports < s->nports);
+    gpr_mu_unlock(&s->mu);
+  }
+}
+
+/* called when all listening endpoints have been shutdown, so no further
+   events will be received on them - at this point it's safe to destroy
+   things */
+static void deactivated_all_ports(grpc_tcp_server* s) {
+  /* delete ALL the things */
+  gpr_mu_lock(&s->mu);
+
+  GPR_ASSERT(s->shutdown);
+
+  if (s->head) {
+    grpc_tcp_listener* sp;
+    for (sp = s->head; sp; sp = sp->next) {
+      grpc_unlink_if_unix_domain_socket(&sp->addr);
+      GRPC_CLOSURE_INIT(&sp->destroyed_closure, destroyed_port, s,
+                        grpc_schedule_on_exec_ctx);
+      grpc_fd_orphan(sp->emfd, &sp->destroyed_closure, nullptr,
+                     "tcp_listener_shutdown");
+    }
+    gpr_mu_unlock(&s->mu);
+  } else {
+    gpr_mu_unlock(&s->mu);
+    finish_shutdown(s);
+  }
+}
+
+static void tcp_server_destroy(grpc_tcp_server* s) {
+  gpr_mu_lock(&s->mu);
+
+  GPR_ASSERT(!s->shutdown);
+  s->shutdown = true;
+
+  /* shutdown all fd's */
+  if (s->active_ports) {
+    grpc_tcp_listener* sp;
+    for (sp = s->head; sp; sp = sp->next) {
+      grpc_fd_shutdown(
+          sp->emfd, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server destroyed"));
+    }
+    gpr_mu_unlock(&s->mu);
+  } else {
+    gpr_mu_unlock(&s->mu);
+    deactivated_all_ports(s);
+  }
+}
+
+/* event manager callback when reads are ready */
+static void on_read(void* arg, grpc_error* err) {
+  grpc_tcp_listener* sp = static_cast<grpc_tcp_listener*>(arg);
+  grpc_pollset* read_notifier_pollset;
+  if (err != GRPC_ERROR_NONE) {
+    goto error;
+  }
+
+  /* loop until accept4 returns EAGAIN, and then re-arm notification */
+  for (;;) {
+    grpc_resolved_address addr;
+    char* addr_str;
+    char* name;
+    memset(&addr, 0, sizeof(addr));
+    addr.len = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+    /* Note: If we ever decide to return this address to the user, remember to
+       strip off the ::ffff:0.0.0.0/96 prefix first. */
+    int fd = grpc_accept4(sp->fd, &addr, 1, 1);
+    if (fd < 0) {
+      switch (errno) {
+        case EINTR:
+          continue;
+        case EAGAIN:
+          grpc_fd_notify_on_read(sp->emfd, &sp->read_closure);
+          return;
+        default:
+          gpr_mu_lock(&sp->server->mu);
+          if (!sp->server->shutdown_listeners) {
+            gpr_log(GPR_ERROR, "Failed accept4: %s", strerror(errno));
+          } else {
+            /* if we have shutdown listeners, accept4 could fail, and we
+               needn't notify users */
+          }
+          gpr_mu_unlock(&sp->server->mu);
+          goto error;
+      }
+    }
+
+    /* For UNIX sockets, the accept call might not fill up the member sun_path
+     * of sockaddr_un, so explicitly call getsockname to get it. */
+    if (grpc_is_unix_socket(&addr)) {
+      memset(&addr, 0, sizeof(addr));
+      addr.len = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+      if (getsockname(fd, reinterpret_cast<struct sockaddr*>(addr.addr),
+                      &(addr.len)) < 0) {
+        gpr_log(GPR_ERROR, "Failed getsockname: %s", strerror(errno));
+        close(fd);
+        goto error;
+      }
+    }
+
+    grpc_set_socket_no_sigpipe_if_possible(fd);
+
+    addr_str = grpc_sockaddr_to_uri(&addr);
+    gpr_asprintf(&name, "tcp-server-connection:%s", addr_str);
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
+      gpr_log(GPR_INFO, "SERVER_CONNECT: incoming connection: %s", addr_str);
+    }
+
+    grpc_fd* fdobj = grpc_fd_create(fd, name, true);
+
+    read_notifier_pollset =
+        sp->server->pollsets[static_cast<size_t>(gpr_atm_no_barrier_fetch_add(
+                                 &sp->server->next_pollset_to_assign, 1)) %
+                             sp->server->pollset_count];
+
+    grpc_pollset_add_fd(read_notifier_pollset, fdobj);
+
+    // Create acceptor.
+    grpc_tcp_server_acceptor* acceptor =
+        static_cast<grpc_tcp_server_acceptor*>(gpr_malloc(sizeof(*acceptor)));
+    acceptor->from_server = sp->server;
+    acceptor->port_index = sp->port_index;
+    acceptor->fd_index = sp->fd_index;
+    acceptor->external_connection = false;
+
+    sp->server->on_accept_cb(
+        sp->server->on_accept_cb_arg,
+        grpc_tcp_create(fdobj, sp->server->channel_args, addr_str),
+        read_notifier_pollset, acceptor);
+
+    gpr_free(name);
+    gpr_free(addr_str);
+  }
+
+  GPR_UNREACHABLE_CODE(return );
+
+error:
+  gpr_mu_lock(&sp->server->mu);
+  if (0 == --sp->server->active_ports && sp->server->shutdown) {
+    gpr_mu_unlock(&sp->server->mu);
+    deactivated_all_ports(sp->server);
+  } else {
+    gpr_mu_unlock(&sp->server->mu);
+  }
+}
+
+/* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
+static grpc_error* add_wildcard_addrs_to_server(grpc_tcp_server* s,
+                                                unsigned port_index,
+                                                int requested_port,
+                                                int* out_port) {
+  grpc_resolved_address wild4;
+  grpc_resolved_address wild6;
+  unsigned fd_index = 0;
+  grpc_dualstack_mode dsmode;
+  grpc_tcp_listener* sp = nullptr;
+  grpc_tcp_listener* sp2 = nullptr;
+  grpc_error* v6_err = GRPC_ERROR_NONE;
+  grpc_error* v4_err = GRPC_ERROR_NONE;
+  *out_port = -1;
+
+  if (grpc_tcp_server_have_ifaddrs() && s->expand_wildcard_addrs) {
+    return grpc_tcp_server_add_all_local_addrs(s, port_index, requested_port,
+                                               out_port);
+  }
+
+  grpc_sockaddr_make_wildcards(requested_port, &wild4, &wild6);
+  /* Try listening on IPv6 first. */
+  if ((v6_err = grpc_tcp_server_add_addr(s, &wild6, port_index, fd_index,
+                                         &dsmode, &sp)) == GRPC_ERROR_NONE) {
+    ++fd_index;
+    requested_port = *out_port = sp->port;
+    if (dsmode == GRPC_DSMODE_DUALSTACK || dsmode == GRPC_DSMODE_IPV4) {
+      return GRPC_ERROR_NONE;
+    }
+  }
+  /* If we got a v6-only socket or nothing, try adding 0.0.0.0. */
+  grpc_sockaddr_set_port(&wild4, requested_port);
+  if ((v4_err = grpc_tcp_server_add_addr(s, &wild4, port_index, fd_index,
+                                         &dsmode, &sp2)) == GRPC_ERROR_NONE) {
+    *out_port = sp2->port;
+    if (sp != nullptr) {
+      sp2->is_sibling = 1;
+      sp->sibling = sp2;
+    }
+  }
+  if (*out_port > 0) {
+    if (v6_err != GRPC_ERROR_NONE) {
+      gpr_log(GPR_INFO,
+              "Failed to add :: listener, "
+              "the environment may not support IPv6: %s",
+              grpc_error_string(v6_err));
+      GRPC_ERROR_UNREF(v6_err);
+    }
+    if (v4_err != GRPC_ERROR_NONE) {
+      gpr_log(GPR_INFO,
+              "Failed to add 0.0.0.0 listener, "
+              "the environment may not support IPv4: %s",
+              grpc_error_string(v4_err));
+      GRPC_ERROR_UNREF(v4_err);
+    }
+    return GRPC_ERROR_NONE;
+  } else {
+    grpc_error* root_err = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Failed to add any wildcard listeners");
+    GPR_ASSERT(v6_err != GRPC_ERROR_NONE && v4_err != GRPC_ERROR_NONE);
+    root_err = grpc_error_add_child(root_err, v6_err);
+    root_err = grpc_error_add_child(root_err, v4_err);
+    return root_err;
+  }
+}
+
+static grpc_error* clone_port(grpc_tcp_listener* listener, unsigned count) {
+  grpc_tcp_listener* sp = nullptr;
+  char* addr_str;
+  char* name;
+  grpc_error* err;
+
+  for (grpc_tcp_listener* l = listener->next; l && l->is_sibling; l = l->next) {
+    l->fd_index += count;
+  }
+
+  for (unsigned i = 0; i < count; i++) {
+    int fd = -1;
+    int port = -1;
+    grpc_dualstack_mode dsmode;
+    err = grpc_create_dualstack_socket(&listener->addr, SOCK_STREAM, 0, &dsmode,
+                                       &fd);
+    if (err != GRPC_ERROR_NONE) return err;
+    err = grpc_tcp_server_prepare_socket(listener->server, fd, &listener->addr,
+                                         true, &port);
+    if (err != GRPC_ERROR_NONE) return err;
+    listener->server->nports++;
+    grpc_sockaddr_to_string(&addr_str, &listener->addr, 1);
+    gpr_asprintf(&name, "tcp-server-listener:%s/clone-%d", addr_str, i);
+    sp = static_cast<grpc_tcp_listener*>(gpr_malloc(sizeof(grpc_tcp_listener)));
+    sp->next = listener->next;
+    listener->next = sp;
+    /* sp (the new listener) is a sibling of 'listener' (the original
+       listener). */
+    sp->is_sibling = 1;
+    sp->sibling = listener->sibling;
+    listener->sibling = sp;
+    sp->server = listener->server;
+    sp->fd = fd;
+    sp->emfd = grpc_fd_create(fd, name, true);
+    memcpy(&sp->addr, &listener->addr, sizeof(grpc_resolved_address));
+    sp->port = port;
+    sp->port_index = listener->port_index;
+    sp->fd_index = listener->fd_index + count - i;
+    GPR_ASSERT(sp->emfd);
+    while (listener->server->tail->next != nullptr) {
+      listener->server->tail = listener->server->tail->next;
+    }
+    gpr_free(addr_str);
+    gpr_free(name);
+  }
+
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* tcp_server_add_port(grpc_tcp_server* s,
+                                       const grpc_resolved_address* addr,
+                                       int* out_port) {
+  grpc_tcp_listener* sp;
+  grpc_resolved_address sockname_temp;
+  grpc_resolved_address addr6_v4mapped;
+  int requested_port = grpc_sockaddr_get_port(addr);
+  unsigned port_index = 0;
+  grpc_dualstack_mode dsmode;
+  grpc_error* err;
+  *out_port = -1;
+  if (s->tail != nullptr) {
+    port_index = s->tail->port_index + 1;
+  }
+  grpc_unlink_if_unix_domain_socket(addr);
+
+  /* Check if this is a wildcard port, and if so, try to keep the port the same
+     as some previously created listener. */
+  if (requested_port == 0) {
+    for (sp = s->head; sp; sp = sp->next) {
+      sockname_temp.len =
+          static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+      if (0 ==
+          getsockname(sp->fd,
+                      reinterpret_cast<grpc_sockaddr*>(&sockname_temp.addr),
+                      &sockname_temp.len)) {
+        int used_port = grpc_sockaddr_get_port(&sockname_temp);
+        if (used_port > 0) {
+          memcpy(&sockname_temp, addr, sizeof(grpc_resolved_address));
+          grpc_sockaddr_set_port(&sockname_temp, used_port);
+          requested_port = used_port;
+          addr = &sockname_temp;
+          break;
+        }
+      }
+    }
+  }
+  if (grpc_sockaddr_is_wildcard(addr, &requested_port)) {
+    return add_wildcard_addrs_to_server(s, port_index, requested_port,
+                                        out_port);
+  }
+  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
+    addr = &addr6_v4mapped;
+  }
+  if ((err = grpc_tcp_server_add_addr(s, addr, port_index, 0, &dsmode, &sp)) ==
+      GRPC_ERROR_NONE) {
+    *out_port = sp->port;
+  }
+  return err;
+}
+
+/* Return listener at port_index or NULL. Should only be called with s->mu
+   locked. */
+static grpc_tcp_listener* get_port_index(grpc_tcp_server* s,
+                                         unsigned port_index) {
+  unsigned num_ports = 0;
+  grpc_tcp_listener* sp;
+  for (sp = s->head; sp; sp = sp->next) {
+    if (!sp->is_sibling) {
+      if (++num_ports > port_index) {
+        return sp;
+      }
+    }
+  }
+  return nullptr;
+}
+
+unsigned tcp_server_port_fd_count(grpc_tcp_server* s, unsigned port_index) {
+  unsigned num_fds = 0;
+  gpr_mu_lock(&s->mu);
+  grpc_tcp_listener* sp = get_port_index(s, port_index);
+  for (; sp; sp = sp->sibling) {
+    ++num_fds;
+  }
+  gpr_mu_unlock(&s->mu);
+  return num_fds;
+}
+
+static int tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+                              unsigned fd_index) {
+  gpr_mu_lock(&s->mu);
+  grpc_tcp_listener* sp = get_port_index(s, port_index);
+  for (; sp; sp = sp->sibling, --fd_index) {
+    if (fd_index == 0) {
+      gpr_mu_unlock(&s->mu);
+      return sp->fd;
+    }
+  }
+  gpr_mu_unlock(&s->mu);
+  return -1;
+}
+
+static void tcp_server_start(grpc_tcp_server* s, grpc_pollset** pollsets,
+                             size_t pollset_count,
+                             grpc_tcp_server_cb on_accept_cb,
+                             void* on_accept_cb_arg) {
+  size_t i;
+  grpc_tcp_listener* sp;
+  GPR_ASSERT(on_accept_cb);
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(!s->on_accept_cb);
+  GPR_ASSERT(s->active_ports == 0);
+  s->on_accept_cb = on_accept_cb;
+  s->on_accept_cb_arg = on_accept_cb_arg;
+  s->pollsets = pollsets;
+  s->pollset_count = pollset_count;
+  sp = s->head;
+  while (sp != nullptr) {
+    if (s->so_reuseport && !grpc_is_unix_socket(&sp->addr) &&
+        pollset_count > 1) {
+      GPR_ASSERT(GRPC_LOG_IF_ERROR(
+          "clone_port", clone_port(sp, (unsigned)(pollset_count - 1))));
+      for (i = 0; i < pollset_count; i++) {
+        grpc_pollset_add_fd(pollsets[i], sp->emfd);
+        GRPC_CLOSURE_INIT(&sp->read_closure, on_read, sp,
+                          grpc_schedule_on_exec_ctx);
+        grpc_fd_notify_on_read(sp->emfd, &sp->read_closure);
+        s->active_ports++;
+        sp = sp->next;
+      }
+    } else {
+      for (i = 0; i < pollset_count; i++) {
+        grpc_pollset_add_fd(pollsets[i], sp->emfd);
+      }
+      GRPC_CLOSURE_INIT(&sp->read_closure, on_read, sp,
+                        grpc_schedule_on_exec_ctx);
+      grpc_fd_notify_on_read(sp->emfd, &sp->read_closure);
+      s->active_ports++;
+      sp = sp->next;
+    }
+  }
+  gpr_mu_unlock(&s->mu);
+}
+
+grpc_tcp_server* tcp_server_ref(grpc_tcp_server* s) {
+  gpr_ref_non_zero(&s->refs);
+  return s;
+}
+
+static void tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                             grpc_closure* shutdown_starting) {
+  gpr_mu_lock(&s->mu);
+  grpc_closure_list_append(&s->shutdown_starting, shutdown_starting,
+                           GRPC_ERROR_NONE);
+  gpr_mu_unlock(&s->mu);
+}
+
+static void tcp_server_unref(grpc_tcp_server* s) {
+  if (gpr_unref(&s->refs)) {
+    grpc_tcp_server_shutdown_listeners(s);
+    gpr_mu_lock(&s->mu);
+    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &s->shutdown_starting);
+    gpr_mu_unlock(&s->mu);
+    tcp_server_destroy(s);
+  }
+}
+
+static void tcp_server_shutdown_listeners(grpc_tcp_server* s) {
+  gpr_mu_lock(&s->mu);
+  s->shutdown_listeners = true;
+  /* shutdown all fd's */
+  if (s->active_ports) {
+    grpc_tcp_listener* sp;
+    for (sp = s->head; sp; sp = sp->next) {
+      grpc_fd_shutdown(sp->emfd,
+                       GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server shutdown"));
+    }
+  }
+  gpr_mu_unlock(&s->mu);
+}
+
+namespace {
+class ExternalConnectionHandler : public grpc_core::TcpServerFdHandler {
+ public:
+  explicit ExternalConnectionHandler(grpc_tcp_server* s) : s_(s) {}
+
+  // TODO(yangg) resolve duplicate code with on_read
+  void Handle(int listener_fd, int fd, grpc_byte_buffer* buf) override {
+    grpc_pollset* read_notifier_pollset;
+    grpc_resolved_address addr;
+    char* addr_str;
+    char* name;
+    memset(&addr, 0, sizeof(addr));
+    addr.len = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+    grpc_core::ExecCtx exec_ctx;
+
+    if (getpeername(fd, reinterpret_cast<struct sockaddr*>(addr.addr),
+                    &(addr.len)) < 0) {
+      gpr_log(GPR_ERROR, "Failed getpeername: %s", strerror(errno));
+      close(fd);
+      return;
+    }
+    grpc_set_socket_no_sigpipe_if_possible(fd);
+    addr_str = grpc_sockaddr_to_uri(&addr);
+    gpr_asprintf(&name, "tcp-server-connection:%s", addr_str);
+    if (grpc_tcp_trace.enabled()) {
+      gpr_log(GPR_INFO, "SERVER_CONNECT: incoming external connection: %s",
+              addr_str);
+    }
+    grpc_fd* fdobj = grpc_fd_create(fd, name, true);
+    read_notifier_pollset =
+        s_->pollsets[static_cast<size_t>(gpr_atm_no_barrier_fetch_add(
+                         &s_->next_pollset_to_assign, 1)) %
+                     s_->pollset_count];
+    grpc_pollset_add_fd(read_notifier_pollset, fdobj);
+    grpc_tcp_server_acceptor* acceptor =
+        static_cast<grpc_tcp_server_acceptor*>(gpr_malloc(sizeof(*acceptor)));
+    acceptor->from_server = s_;
+    acceptor->port_index = -1;
+    acceptor->fd_index = -1;
+    acceptor->external_connection = true;
+    acceptor->listener_fd = listener_fd;
+    acceptor->pending_data = buf;
+    s_->on_accept_cb(s_->on_accept_cb_arg,
+                     grpc_tcp_create(fdobj, s_->channel_args, addr_str),
+                     read_notifier_pollset, acceptor);
+    gpr_free(name);
+    gpr_free(addr_str);
+  }
+
+ private:
+  grpc_tcp_server* s_;
+};
+}  // namespace
+
+static grpc_core::TcpServerFdHandler* tcp_server_create_fd_handler(
+    grpc_tcp_server* s) {
+  s->fd_handler = new ExternalConnectionHandler(s);
+  return s->fd_handler;
+}
+
+grpc_tcp_server_vtable grpc_posix_tcp_server_vtable = {
+    tcp_server_create,        tcp_server_start,
+    tcp_server_add_port,      tcp_server_create_fd_handler,
+    tcp_server_port_fd_count, tcp_server_port_fd,
+    tcp_server_ref,           tcp_server_shutdown_starting_add,
+    tcp_server_unref,         tcp_server_shutdown_listeners};
+
+#endif /* GRPC_POSIX_SOCKET_TCP_SERVER */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix.h
new file mode 100644
index 0000000..390d6d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix.h	
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+
+/* one listening port */
+typedef struct grpc_tcp_listener {
+  int fd;
+  grpc_fd* emfd;
+  grpc_tcp_server* server;
+  grpc_resolved_address addr;
+  int port;
+  unsigned port_index;
+  unsigned fd_index;
+  grpc_closure read_closure;
+  grpc_closure destroyed_closure;
+  struct grpc_tcp_listener* next;
+  /* sibling is a linked list of all listeners for a given port. add_port and
+     clone_port place all new listeners in the same sibling list. A member of
+     the 'sibling' list is also a member of the 'next' list. The head of each
+     sibling list has is_sibling==0, and subsequent members of sibling lists
+     have is_sibling==1. is_sibling allows separate sibling lists to be
+     identified while iterating through 'next'. */
+  struct grpc_tcp_listener* sibling;
+  int is_sibling;
+} grpc_tcp_listener;
+
+/* the overall server */
+struct grpc_tcp_server {
+  gpr_refcount refs;
+  /* Called whenever accept() succeeds on a server port. */
+  grpc_tcp_server_cb on_accept_cb;
+  void* on_accept_cb_arg;
+
+  gpr_mu mu;
+
+  /* active port count: how many ports are actually still listening */
+  size_t active_ports;
+  /* destroyed port count: how many ports are completely destroyed */
+  size_t destroyed_ports;
+
+  /* is this server shutting down? */
+  bool shutdown;
+  /* have listeners been shutdown? */
+  bool shutdown_listeners;
+  /* use SO_REUSEPORT */
+  bool so_reuseport;
+  /* expand wildcard addresses to a list of all local addresses */
+  bool expand_wildcard_addrs;
+
+  /* linked list of server ports */
+  grpc_tcp_listener* head;
+  grpc_tcp_listener* tail;
+  unsigned nports;
+
+  /* List of closures passed to shutdown_starting_add(). */
+  grpc_closure_list shutdown_starting;
+
+  /* shutdown callback */
+  grpc_closure* shutdown_complete;
+
+  /* all pollsets interested in new connections */
+  grpc_pollset** pollsets;
+  /* number of pollsets in the pollsets array */
+  size_t pollset_count;
+
+  /* next pollset to assign a channel to */
+  gpr_atm next_pollset_to_assign;
+
+  /* channel args for this server */
+  grpc_channel_args* channel_args;
+
+  /* a handler for external connections, owned */
+  grpc_core::TcpServerFdHandler* fd_handler;
+};
+
+/* If successful, add a listener to \a s for \a addr, set \a dsmode for the
+   socket, and return the \a listener. */
+grpc_error* grpc_tcp_server_add_addr(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     unsigned port_index, unsigned fd_index,
+                                     grpc_dualstack_mode* dsmode,
+                                     grpc_tcp_listener** listener);
+
+/* Get all addresses assigned to network interfaces on the machine and create a
+   listener for each. requested_port is the port to use for every listener, or 0
+   to select one random port that will be used for every listener. Set *out_port
+   to the port selected. Return GRPC_ERROR_NONE only if all listeners were
+   added. */
+grpc_error* grpc_tcp_server_add_all_local_addrs(grpc_tcp_server* s,
+                                                unsigned port_index,
+                                                int requested_port,
+                                                int* out_port);
+
+/* Prepare a recently-created socket for listening. */
+grpc_error* grpc_tcp_server_prepare_socket(grpc_tcp_server*, int fd,
+                                           const grpc_resolved_address* addr,
+                                           bool so_reuseport, int* port);
+/* Ruturn true if the platform supports ifaddrs */
+bool grpc_tcp_server_have_ifaddrs(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_UTILS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_common.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_common.cc
new file mode 100644
index 0000000..da18cc3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_common.cc	
@@ -0,0 +1,222 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON
+
+#include "src/core/lib/iomgr/tcp_server_utils_posix.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
+
+static gpr_once s_init_max_accept_queue_size = GPR_ONCE_INIT;
+static int s_max_accept_queue_size;
+
+/* get max listen queue size on linux */
+static void init_max_accept_queue_size(void) {
+  int n = SOMAXCONN;
+  char buf[64];
+  FILE* fp = fopen("/proc/sys/net/core/somaxconn", "r");
+  if (fp == nullptr) {
+    /* 2.4 kernel. */
+    s_max_accept_queue_size = SOMAXCONN;
+    return;
+  }
+  if (fgets(buf, sizeof buf, fp)) {
+    char* end;
+    long i = strtol(buf, &end, 10);
+    if (i > 0 && i <= INT_MAX && end && *end == '\n') {
+      n = static_cast<int>(i);
+    }
+  }
+  fclose(fp);
+  s_max_accept_queue_size = n;
+
+  if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) {
+    gpr_log(GPR_INFO,
+            "Suspiciously small accept queue (%d) will probably lead to "
+            "connection drops",
+            s_max_accept_queue_size);
+  }
+}
+
+static int get_max_accept_queue_size(void) {
+  gpr_once_init(&s_init_max_accept_queue_size, init_max_accept_queue_size);
+  return s_max_accept_queue_size;
+}
+
+static grpc_error* add_socket_to_server(grpc_tcp_server* s, int fd,
+                                        const grpc_resolved_address* addr,
+                                        unsigned port_index, unsigned fd_index,
+                                        grpc_tcp_listener** listener) {
+  grpc_tcp_listener* sp = nullptr;
+  int port = -1;
+  char* addr_str;
+  char* name;
+
+  grpc_error* err =
+      grpc_tcp_server_prepare_socket(s, fd, addr, s->so_reuseport, &port);
+  if (err == GRPC_ERROR_NONE) {
+    GPR_ASSERT(port > 0);
+    grpc_sockaddr_to_string(&addr_str, addr, 1);
+    gpr_asprintf(&name, "tcp-server-listener:%s", addr_str);
+    gpr_mu_lock(&s->mu);
+    s->nports++;
+    GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
+    sp = static_cast<grpc_tcp_listener*>(gpr_malloc(sizeof(grpc_tcp_listener)));
+    sp->next = nullptr;
+    if (s->head == nullptr) {
+      s->head = sp;
+    } else {
+      s->tail->next = sp;
+    }
+    s->tail = sp;
+    sp->server = s;
+    sp->fd = fd;
+    sp->emfd = grpc_fd_create(fd, name, true);
+    memcpy(&sp->addr, addr, sizeof(grpc_resolved_address));
+    sp->port = port;
+    sp->port_index = port_index;
+    sp->fd_index = fd_index;
+    sp->is_sibling = 0;
+    sp->sibling = nullptr;
+    GPR_ASSERT(sp->emfd);
+    gpr_mu_unlock(&s->mu);
+    gpr_free(addr_str);
+    gpr_free(name);
+  }
+
+  *listener = sp;
+  return err;
+}
+
+/* If successful, add a listener to s for addr, set *dsmode for the socket, and
+   return the *listener. */
+grpc_error* grpc_tcp_server_add_addr(grpc_tcp_server* s,
+                                     const grpc_resolved_address* addr,
+                                     unsigned port_index, unsigned fd_index,
+                                     grpc_dualstack_mode* dsmode,
+                                     grpc_tcp_listener** listener) {
+  grpc_resolved_address addr4_copy;
+  int fd;
+  grpc_error* err =
+      grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, dsmode, &fd);
+  if (err != GRPC_ERROR_NONE) {
+    return err;
+  }
+  if (*dsmode == GRPC_DSMODE_IPV4 &&
+      grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
+    addr = &addr4_copy;
+  }
+  return add_socket_to_server(s, fd, addr, port_index, fd_index, listener);
+}
+
+/* Prepare a recently-created socket for listening. */
+grpc_error* grpc_tcp_server_prepare_socket(grpc_tcp_server* s, int fd,
+                                           const grpc_resolved_address* addr,
+                                           bool so_reuseport, int* port) {
+  grpc_resolved_address sockname_temp;
+  grpc_error* err = GRPC_ERROR_NONE;
+
+  GPR_ASSERT(fd >= 0);
+
+  if (so_reuseport && !grpc_is_unix_socket(addr)) {
+    err = grpc_set_socket_reuse_port(fd, 1);
+    if (err != GRPC_ERROR_NONE) goto error;
+  }
+
+#ifdef GRPC_LINUX_ERRQUEUE
+  err = grpc_set_socket_zerocopy(fd);
+  if (err != GRPC_ERROR_NONE) {
+    /* it's not fatal, so just log it. */
+    gpr_log(GPR_DEBUG, "Node does not support SO_ZEROCOPY, continuing.");
+    GRPC_ERROR_UNREF(err);
+  }
+#endif
+  err = grpc_set_socket_nonblocking(fd, 1);
+  if (err != GRPC_ERROR_NONE) goto error;
+  err = grpc_set_socket_cloexec(fd, 1);
+  if (err != GRPC_ERROR_NONE) goto error;
+  if (!grpc_is_unix_socket(addr)) {
+    err = grpc_set_socket_low_latency(fd, 1);
+    if (err != GRPC_ERROR_NONE) goto error;
+    err = grpc_set_socket_reuse_addr(fd, 1);
+    if (err != GRPC_ERROR_NONE) goto error;
+    err = grpc_set_socket_tcp_user_timeout(fd, s->channel_args,
+                                           false /* is_client */);
+    if (err != GRPC_ERROR_NONE) goto error;
+  }
+  err = grpc_set_socket_no_sigpipe_if_possible(fd);
+  if (err != GRPC_ERROR_NONE) goto error;
+
+  err = grpc_apply_socket_mutator_in_args(fd, s->channel_args);
+  if (err != GRPC_ERROR_NONE) goto error;
+
+  if (bind(fd, reinterpret_cast<grpc_sockaddr*>(const_cast<char*>(addr->addr)),
+           addr->len) < 0) {
+    err = GRPC_OS_ERROR(errno, "bind");
+    goto error;
+  }
+
+  if (listen(fd, get_max_accept_queue_size()) < 0) {
+    err = GRPC_OS_ERROR(errno, "listen");
+    goto error;
+  }
+
+  sockname_temp.len = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+
+  if (getsockname(fd, reinterpret_cast<grpc_sockaddr*>(sockname_temp.addr),
+                  &sockname_temp.len) < 0) {
+    err = GRPC_OS_ERROR(errno, "getsockname");
+    goto error;
+  }
+
+  *port = grpc_sockaddr_get_port(&sockname_temp);
+  return GRPC_ERROR_NONE;
+
+error:
+  GPR_ASSERT(err != GRPC_ERROR_NONE);
+  if (fd >= 0) {
+    close(fd);
+  }
+  grpc_error* ret =
+      grpc_error_set_int(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                             "Unable to configure socket", &err, 1),
+                         GRPC_ERROR_INT_FD, fd);
+  GRPC_ERROR_UNREF(err);
+  return ret;
+}
+
+#endif /* GRPC_POSIX_SOCKET_TCP_SERVER_UTILS_COMMON */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.cc
new file mode 100644
index 0000000..7fd86c5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.cc	
@@ -0,0 +1,184 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_HAVE_IFADDRS
+
+#include "src/core/lib/iomgr/tcp_server_utils_posix.h"
+
+#include <errno.h>
+#include <ifaddrs.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+
+/* Return the listener in s with address addr or NULL. */
+static grpc_tcp_listener* find_listener_with_addr(grpc_tcp_server* s,
+                                                  grpc_resolved_address* addr) {
+  grpc_tcp_listener* l;
+  gpr_mu_lock(&s->mu);
+  for (l = s->head; l != nullptr; l = l->next) {
+    if (l->addr.len != addr->len) {
+      continue;
+    }
+    if (memcmp(l->addr.addr, addr->addr, addr->len) == 0) {
+      break;
+    }
+  }
+  gpr_mu_unlock(&s->mu);
+  return l;
+}
+
+/* Bind to "::" to get a port number not used by any address. */
+static grpc_error* get_unused_port(int* port) {
+  grpc_resolved_address wild;
+  grpc_sockaddr_make_wildcard6(0, &wild);
+  grpc_dualstack_mode dsmode;
+  int fd;
+  grpc_error* err =
+      grpc_create_dualstack_socket(&wild, SOCK_STREAM, 0, &dsmode, &fd);
+  if (err != GRPC_ERROR_NONE) {
+    return err;
+  }
+  if (dsmode == GRPC_DSMODE_IPV4) {
+    grpc_sockaddr_make_wildcard4(0, &wild);
+  }
+  if (bind(fd, reinterpret_cast<const grpc_sockaddr*>(wild.addr), wild.len) !=
+      0) {
+    err = GRPC_OS_ERROR(errno, "bind");
+    close(fd);
+    return err;
+  }
+  if (getsockname(fd, reinterpret_cast<grpc_sockaddr*>(wild.addr), &wild.len) !=
+      0) {
+    err = GRPC_OS_ERROR(errno, "getsockname");
+    close(fd);
+    return err;
+  }
+  close(fd);
+  *port = grpc_sockaddr_get_port(&wild);
+  return *port <= 0 ? GRPC_ERROR_CREATE_FROM_STATIC_STRING("Bad port")
+                    : GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_tcp_server_add_all_local_addrs(grpc_tcp_server* s,
+                                                unsigned port_index,
+                                                int requested_port,
+                                                int* out_port) {
+  struct ifaddrs* ifa = nullptr;
+  struct ifaddrs* ifa_it;
+  unsigned fd_index = 0;
+  grpc_tcp_listener* sp = nullptr;
+  grpc_error* err = GRPC_ERROR_NONE;
+  if (requested_port == 0) {
+    /* Note: There could be a race where some local addrs can listen on the
+       selected port and some can't. The sane way to handle this would be to
+       retry by recreating the whole grpc_tcp_server. Backing out individual
+       listeners and orphaning the FDs looks like too much trouble. */
+    if ((err = get_unused_port(&requested_port)) != GRPC_ERROR_NONE) {
+      return err;
+    } else if (requested_port <= 0) {
+      return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Bad get_unused_port()");
+    }
+    gpr_log(GPR_DEBUG, "Picked unused port %d", requested_port);
+  }
+  if (getifaddrs(&ifa) != 0 || ifa == nullptr) {
+    return GRPC_OS_ERROR(errno, "getifaddrs");
+  }
+  for (ifa_it = ifa; ifa_it != nullptr; ifa_it = ifa_it->ifa_next) {
+    grpc_resolved_address addr;
+    char* addr_str = nullptr;
+    grpc_dualstack_mode dsmode;
+    grpc_tcp_listener* new_sp = nullptr;
+    const char* ifa_name = (ifa_it->ifa_name ? ifa_it->ifa_name : "<unknown>");
+    if (ifa_it->ifa_addr == nullptr) {
+      continue;
+    } else if (ifa_it->ifa_addr->sa_family == AF_INET) {
+      addr.len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in));
+    } else if (ifa_it->ifa_addr->sa_family == AF_INET6) {
+      addr.len = static_cast<socklen_t>(sizeof(grpc_sockaddr_in6));
+    } else {
+      continue;
+    }
+    memcpy(addr.addr, ifa_it->ifa_addr, addr.len);
+    if (!grpc_sockaddr_set_port(&addr, requested_port)) {
+      /* Should never happen, because we check sa_family above. */
+      err = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to set port");
+      break;
+    }
+    if (grpc_sockaddr_to_string(&addr_str, &addr, 0) < 0) {
+      addr_str = gpr_strdup("<error>");
+    }
+    gpr_log(GPR_DEBUG,
+            "Adding local addr from interface %s flags 0x%x to server: %s",
+            ifa_name, ifa_it->ifa_flags, addr_str);
+    /* We could have multiple interfaces with the same address (e.g., bonding),
+       so look for duplicates. */
+    if (find_listener_with_addr(s, &addr) != nullptr) {
+      gpr_log(GPR_DEBUG, "Skipping duplicate addr %s on interface %s", addr_str,
+              ifa_name);
+      gpr_free(addr_str);
+      continue;
+    }
+    if ((err = grpc_tcp_server_add_addr(s, &addr, port_index, fd_index, &dsmode,
+                                        &new_sp)) != GRPC_ERROR_NONE) {
+      char* err_str = nullptr;
+      grpc_error* root_err;
+      if (gpr_asprintf(&err_str, "Failed to add listener: %s", addr_str) < 0) {
+        err_str = gpr_strdup("Failed to add listener");
+      }
+      root_err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_str);
+      gpr_free(err_str);
+      gpr_free(addr_str);
+      err = grpc_error_add_child(root_err, err);
+      break;
+    } else {
+      GPR_ASSERT(requested_port == new_sp->port);
+      ++fd_index;
+      if (sp != nullptr) {
+        new_sp->is_sibling = 1;
+        sp->sibling = new_sp;
+      }
+      sp = new_sp;
+    }
+    gpr_free(addr_str);
+  }
+  freeifaddrs(ifa);
+  if (err != GRPC_ERROR_NONE) {
+    return err;
+  } else if (sp == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("No local addresses");
+  } else {
+    *out_port = sp->port;
+    return GRPC_ERROR_NONE;
+  }
+}
+
+bool grpc_tcp_server_have_ifaddrs(void) { return true; }
+
+#endif /* GRPC_HAVE_IFADDRS */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.cc
new file mode 100644
index 0000000..86ee14f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#if defined(GRPC_POSIX_SOCKET) && !defined(GRPC_HAVE_IFADDRS)
+
+#include "src/core/lib/iomgr/tcp_server_utils_posix.h"
+
+grpc_error* grpc_tcp_server_add_all_local_addrs(grpc_tcp_server* s,
+                                                unsigned port_index,
+                                                int requested_port,
+                                                int* out_port) {
+  return GRPC_ERROR_CREATE_FROM_STATIC_STRING("no ifaddrs available");
+}
+
+bool grpc_tcp_server_have_ifaddrs(void) { return false; }
+
+#endif /* defined(GRPC_POSIX_SOCKET) && !defined(GRPC_HAVE_IFADDRS) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_windows.cc
new file mode 100644
index 0000000..0052175
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_server_windows.cc	
@@ -0,0 +1,564 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include <inttypes.h>
+#include <io.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+
+#define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
+
+/* one listening port */
+typedef struct grpc_tcp_listener grpc_tcp_listener;
+struct grpc_tcp_listener {
+  /* This seemingly magic number comes from AcceptEx's documentation. each
+     address buffer needs to have at least 16 more bytes at their end. */
+  uint8_t addresses[(sizeof(grpc_sockaddr_in6) + 16) * 2];
+  /* This will hold the socket for the next accept. */
+  SOCKET new_socket;
+  /* The listener winsocket. */
+  grpc_winsocket* socket;
+  /* The actual TCP port number. */
+  int port;
+  unsigned port_index;
+  grpc_tcp_server* server;
+  /* The cached AcceptEx for that port. */
+  LPFN_ACCEPTEX AcceptEx;
+  int shutting_down;
+  int outstanding_calls;
+  /* closure for socket notification of accept being ready */
+  grpc_closure on_accept;
+  /* linked list */
+  struct grpc_tcp_listener* next;
+};
+
+/* the overall server */
+struct grpc_tcp_server {
+  gpr_refcount refs;
+  /* Called whenever accept() succeeds on a server port. */
+  grpc_tcp_server_cb on_accept_cb;
+  void* on_accept_cb_arg;
+
+  gpr_mu mu;
+
+  /* active port count: how many ports are actually still listening */
+  int active_ports;
+
+  /* linked list of server ports */
+  grpc_tcp_listener* head;
+  grpc_tcp_listener* tail;
+
+  /* List of closures passed to shutdown_starting_add(). */
+  grpc_closure_list shutdown_starting;
+
+  /* shutdown callback */
+  grpc_closure* shutdown_complete;
+
+  grpc_channel_args* channel_args;
+};
+
+/* Public function. Allocates the proper data structures to hold a
+   grpc_tcp_server. */
+static grpc_error* tcp_server_create(grpc_closure* shutdown_complete,
+                                     const grpc_channel_args* args,
+                                     grpc_tcp_server** server) {
+  grpc_tcp_server* s = (grpc_tcp_server*)gpr_malloc(sizeof(grpc_tcp_server));
+  s->channel_args = grpc_channel_args_copy(args);
+  gpr_ref_init(&s->refs, 1);
+  gpr_mu_init(&s->mu);
+  s->active_ports = 0;
+  s->on_accept_cb = NULL;
+  s->on_accept_cb_arg = NULL;
+  s->head = NULL;
+  s->tail = NULL;
+  s->shutdown_starting.head = NULL;
+  s->shutdown_starting.tail = NULL;
+  s->shutdown_complete = shutdown_complete;
+  *server = s;
+  return GRPC_ERROR_NONE;
+}
+
+static void destroy_server(void* arg, grpc_error* error) {
+  grpc_tcp_server* s = (grpc_tcp_server*)arg;
+
+  /* Now that the accepts have been aborted, we can destroy the sockets.
+     The IOCP won't get notified on these, so we can flag them as already
+     closed by the system. */
+  while (s->head) {
+    grpc_tcp_listener* sp = s->head;
+    s->head = sp->next;
+    sp->next = NULL;
+    grpc_winsocket_destroy(sp->socket);
+    gpr_free(sp);
+  }
+  grpc_channel_args_destroy(s->channel_args);
+  gpr_mu_destroy(&s->mu);
+  gpr_free(s);
+}
+
+static void finish_shutdown_locked(grpc_tcp_server* s) {
+  if (s->shutdown_complete != NULL) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->shutdown_complete,
+                            GRPC_ERROR_NONE);
+  }
+
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      GRPC_CLOSURE_CREATE(destroy_server, s, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_NONE);
+}
+
+static grpc_tcp_server* tcp_server_ref(grpc_tcp_server* s) {
+  gpr_ref_non_zero(&s->refs);
+  return s;
+}
+
+static void tcp_server_shutdown_starting_add(grpc_tcp_server* s,
+                                             grpc_closure* shutdown_starting) {
+  gpr_mu_lock(&s->mu);
+  grpc_closure_list_append(&s->shutdown_starting, shutdown_starting,
+                           GRPC_ERROR_NONE);
+  gpr_mu_unlock(&s->mu);
+}
+
+static void tcp_server_destroy(grpc_tcp_server* s) {
+  grpc_tcp_listener* sp;
+  gpr_mu_lock(&s->mu);
+
+  /* First, shutdown all fd's. This will queue abortion calls for all
+     of the pending accepts due to the normal operation mechanism. */
+  if (s->active_ports == 0) {
+    finish_shutdown_locked(s);
+  } else {
+    for (sp = s->head; sp; sp = sp->next) {
+      sp->shutting_down = 1;
+      grpc_winsocket_shutdown(sp->socket);
+    }
+  }
+  gpr_mu_unlock(&s->mu);
+}
+
+static void tcp_server_unref(grpc_tcp_server* s) {
+  if (gpr_unref(&s->refs)) {
+    grpc_tcp_server_shutdown_listeners(s);
+    gpr_mu_lock(&s->mu);
+    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &s->shutdown_starting);
+    gpr_mu_unlock(&s->mu);
+    tcp_server_destroy(s);
+  }
+}
+
+/* Prepare (bind) a recently-created socket for listening. */
+static grpc_error* prepare_socket(SOCKET sock,
+                                  const grpc_resolved_address* addr,
+                                  int* port) {
+  grpc_resolved_address sockname_temp;
+  grpc_error* error = GRPC_ERROR_NONE;
+  int sockname_temp_len;
+
+  error = grpc_tcp_prepare_socket(sock);
+  if (error != GRPC_ERROR_NONE) {
+    goto failure;
+  }
+
+  if (bind(sock, (const grpc_sockaddr*)addr->addr, (int)addr->len) ==
+      SOCKET_ERROR) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "bind");
+    goto failure;
+  }
+
+  if (listen(sock, SOMAXCONN) == SOCKET_ERROR) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "listen");
+    goto failure;
+  }
+
+  sockname_temp_len = sizeof(struct sockaddr_storage);
+  if (getsockname(sock, (grpc_sockaddr*)sockname_temp.addr,
+                  &sockname_temp_len) == SOCKET_ERROR) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "getsockname");
+    goto failure;
+  }
+  sockname_temp.len = (size_t)sockname_temp_len;
+
+  *port = grpc_sockaddr_get_port(&sockname_temp);
+  return GRPC_ERROR_NONE;
+
+failure:
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  char* tgtaddr = grpc_sockaddr_to_uri(addr);
+  grpc_error_set_int(
+      grpc_error_set_str(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                             "Failed to prepare server socket", &error, 1),
+                         GRPC_ERROR_STR_TARGET_ADDRESS,
+                         grpc_slice_from_copied_string(tgtaddr)),
+      GRPC_ERROR_INT_FD, (intptr_t)sock);
+  gpr_free(tgtaddr);
+  GRPC_ERROR_UNREF(error);
+  if (sock != INVALID_SOCKET) closesocket(sock);
+  return error;
+}
+
+static void decrement_active_ports_and_notify_locked(grpc_tcp_listener* sp) {
+  sp->shutting_down = 0;
+  GPR_ASSERT(sp->server->active_ports > 0);
+  if (0 == --sp->server->active_ports) {
+    finish_shutdown_locked(sp->server);
+  }
+}
+
+/* In order to do an async accept, we need to create a socket first which
+   will be the one assigned to the new incoming connection. */
+static grpc_error* start_accept_locked(grpc_tcp_listener* port) {
+  SOCKET sock = INVALID_SOCKET;
+  BOOL success;
+  DWORD addrlen = sizeof(grpc_sockaddr_in6) + 16;
+  DWORD bytes_received = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  if (port->shutting_down) {
+    return GRPC_ERROR_NONE;
+  }
+
+  sock = WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                   grpc_get_default_wsa_socket_flags());
+  if (sock == INVALID_SOCKET) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "WSASocket");
+    goto failure;
+  }
+
+  error = grpc_tcp_prepare_socket(sock);
+  if (error != GRPC_ERROR_NONE) goto failure;
+
+  /* Start the "accept" asynchronously. */
+  success = port->AcceptEx(port->socket->socket, sock, port->addresses, 0,
+                           addrlen, addrlen, &bytes_received,
+                           &port->socket->read_info.overlapped);
+
+  /* It is possible to get an accept immediately without delay. However, we
+     will still get an IOCP notification for it. So let's just ignore it. */
+  if (!success) {
+    int last_error = WSAGetLastError();
+    if (last_error != ERROR_IO_PENDING) {
+      error = GRPC_WSA_ERROR(last_error, "AcceptEx");
+      goto failure;
+    }
+  }
+
+  /* We're ready to do the accept. Calling grpc_socket_notify_on_read may
+     immediately process an accept that happened in the meantime. */
+  port->new_socket = sock;
+  grpc_socket_notify_on_read(port->socket, &port->on_accept);
+  port->outstanding_calls++;
+  return error;
+
+failure:
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+  if (sock != INVALID_SOCKET) closesocket(sock);
+  return error;
+}
+
+/* Event manager callback when reads are ready. */
+static void on_accept(void* arg, grpc_error* error) {
+  grpc_tcp_listener* sp = (grpc_tcp_listener*)arg;
+  SOCKET sock = sp->new_socket;
+  grpc_winsocket_callback_info* info = &sp->socket->read_info;
+  grpc_endpoint* ep = NULL;
+  grpc_resolved_address peer_name;
+  char* peer_name_string;
+  char* fd_name;
+  DWORD transfered_bytes;
+  DWORD flags;
+  BOOL wsa_success;
+  int err;
+
+  gpr_mu_lock(&sp->server->mu);
+
+  peer_name.len = sizeof(struct sockaddr_storage);
+
+  /* The general mechanism for shutting down is to queue abortion calls. While
+     this is necessary in the read/write case, it's useless for the accept
+     case. We only need to adjust the pending callback count */
+  if (error != GRPC_ERROR_NONE) {
+    const char* msg = grpc_error_string(error);
+    gpr_log(GPR_INFO, "Skipping on_accept due to error: %s", msg);
+
+    gpr_mu_unlock(&sp->server->mu);
+    return;
+  }
+
+  /* The IOCP notified us of a completed operation. Let's grab the results,
+     and act accordingly. */
+  transfered_bytes = 0;
+  wsa_success = WSAGetOverlappedResult(sock, &info->overlapped,
+                                       &transfered_bytes, FALSE, &flags);
+  if (!wsa_success) {
+    if (!sp->shutting_down) {
+      char* utf8_message = gpr_format_message(WSAGetLastError());
+      gpr_log(GPR_ERROR, "on_accept error: %s", utf8_message);
+      gpr_free(utf8_message);
+    }
+    closesocket(sock);
+  } else {
+    if (!sp->shutting_down) {
+      peer_name_string = NULL;
+      err = setsockopt(sock, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
+                       (char*)&sp->socket->socket, sizeof(sp->socket->socket));
+      if (err) {
+        char* utf8_message = gpr_format_message(WSAGetLastError());
+        gpr_log(GPR_ERROR, "setsockopt error: %s", utf8_message);
+        gpr_free(utf8_message);
+      }
+      int peer_name_len = (int)peer_name.len;
+      err = getpeername(sock, (grpc_sockaddr*)peer_name.addr, &peer_name_len);
+      peer_name.len = (size_t)peer_name_len;
+      if (!err) {
+        peer_name_string = grpc_sockaddr_to_uri(&peer_name);
+      } else {
+        char* utf8_message = gpr_format_message(WSAGetLastError());
+        gpr_log(GPR_ERROR, "getpeername error: %s", utf8_message);
+        gpr_free(utf8_message);
+      }
+      gpr_asprintf(&fd_name, "tcp_server:%s", peer_name_string);
+      ep = grpc_tcp_create(grpc_winsocket_create(sock, fd_name),
+                           sp->server->channel_args, peer_name_string);
+      gpr_free(fd_name);
+      gpr_free(peer_name_string);
+    } else {
+      closesocket(sock);
+    }
+  }
+
+  /* The only time we should call our callback, is where we successfully
+     managed to accept a connection, and created an endpoint. */
+  if (ep) {
+    // Create acceptor.
+    grpc_tcp_server_acceptor* acceptor =
+        (grpc_tcp_server_acceptor*)gpr_malloc(sizeof(*acceptor));
+    acceptor->from_server = sp->server;
+    acceptor->port_index = sp->port_index;
+    acceptor->fd_index = 0;
+    acceptor->external_connection = false;
+    sp->server->on_accept_cb(sp->server->on_accept_cb_arg, ep, NULL, acceptor);
+  }
+  /* As we were notified from the IOCP of one and exactly one accept,
+     the former socked we created has now either been destroy or assigned
+     to the new connection. We need to create a new one for the next
+     connection. */
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("start_accept", start_accept_locked(sp)));
+  if (0 == --sp->outstanding_calls) {
+    decrement_active_ports_and_notify_locked(sp);
+  }
+  gpr_mu_unlock(&sp->server->mu);
+}
+
+static grpc_error* add_socket_to_server(grpc_tcp_server* s, SOCKET sock,
+                                        const grpc_resolved_address* addr,
+                                        unsigned port_index,
+                                        grpc_tcp_listener** listener) {
+  grpc_tcp_listener* sp = NULL;
+  int port = -1;
+  int status;
+  GUID guid = WSAID_ACCEPTEX;
+  DWORD ioctl_num_bytes;
+  LPFN_ACCEPTEX AcceptEx;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  /* We need to grab the AcceptEx pointer for that port, as it may be
+     interface-dependent. We'll cache it to avoid doing that again. */
+  status =
+      WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid),
+               &AcceptEx, sizeof(AcceptEx), &ioctl_num_bytes, NULL, NULL);
+
+  if (status != 0) {
+    char* utf8_message = gpr_format_message(WSAGetLastError());
+    gpr_log(GPR_ERROR, "on_connect error: %s", utf8_message);
+    gpr_free(utf8_message);
+    closesocket(sock);
+    return GRPC_ERROR_NONE;
+  }
+
+  error = prepare_socket(sock, addr, &port);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+
+  GPR_ASSERT(port >= 0);
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
+  sp = (grpc_tcp_listener*)gpr_malloc(sizeof(grpc_tcp_listener));
+  sp->next = NULL;
+  if (s->head == NULL) {
+    s->head = sp;
+  } else {
+    s->tail->next = sp;
+  }
+  s->tail = sp;
+  sp->server = s;
+  sp->socket = grpc_winsocket_create(sock, "listener");
+  sp->shutting_down = 0;
+  sp->outstanding_calls = 0;
+  sp->AcceptEx = AcceptEx;
+  sp->new_socket = INVALID_SOCKET;
+  sp->port = port;
+  sp->port_index = port_index;
+  GRPC_CLOSURE_INIT(&sp->on_accept, on_accept, sp, grpc_schedule_on_exec_ctx);
+  GPR_ASSERT(sp->socket);
+  gpr_mu_unlock(&s->mu);
+  *listener = sp;
+
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* tcp_server_add_port(grpc_tcp_server* s,
+                                       const grpc_resolved_address* addr,
+                                       int* port) {
+  grpc_tcp_listener* sp = NULL;
+  SOCKET sock;
+  grpc_resolved_address addr6_v4mapped;
+  grpc_resolved_address wildcard;
+  grpc_resolved_address* allocated_addr = NULL;
+  grpc_resolved_address sockname_temp;
+  unsigned port_index = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  if (s->tail != NULL) {
+    port_index = s->tail->port_index + 1;
+  }
+
+  /* Check if this is a wildcard port, and if so, try to keep the port the same
+     as some previously created listener. */
+  if (grpc_sockaddr_get_port(addr) == 0) {
+    for (sp = s->head; sp; sp = sp->next) {
+      int sockname_temp_len = sizeof(struct sockaddr_storage);
+      if (0 == getsockname(sp->socket->socket,
+                           (grpc_sockaddr*)sockname_temp.addr,
+                           &sockname_temp_len)) {
+        sockname_temp.len = (size_t)sockname_temp_len;
+        *port = grpc_sockaddr_get_port(&sockname_temp);
+        if (*port > 0) {
+          allocated_addr =
+              (grpc_resolved_address*)gpr_malloc(sizeof(grpc_resolved_address));
+          memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
+          grpc_sockaddr_set_port(allocated_addr, *port);
+          addr = allocated_addr;
+          break;
+        }
+      }
+    }
+  }
+
+  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
+    addr = &addr6_v4mapped;
+  }
+
+  /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
+  if (grpc_sockaddr_is_wildcard(addr, port)) {
+    grpc_sockaddr_make_wildcard6(*port, &wildcard);
+
+    addr = &wildcard;
+  }
+
+  sock = WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
+                   grpc_get_default_wsa_socket_flags());
+  if (sock == INVALID_SOCKET) {
+    error = GRPC_WSA_ERROR(WSAGetLastError(), "WSASocket");
+    goto done;
+  }
+
+  error = add_socket_to_server(s, sock, addr, port_index, &sp);
+
+done:
+  gpr_free(allocated_addr);
+
+  if (error != GRPC_ERROR_NONE) {
+    grpc_error* error_out = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Failed to add port to server", &error, 1);
+    GRPC_ERROR_UNREF(error);
+    error = error_out;
+    *port = -1;
+  } else {
+    GPR_ASSERT(sp != NULL);
+    *port = sp->port;
+  }
+  return error;
+}
+
+static void tcp_server_start(grpc_tcp_server* s, grpc_pollset** pollset,
+                             size_t pollset_count,
+                             grpc_tcp_server_cb on_accept_cb,
+                             void* on_accept_cb_arg) {
+  grpc_tcp_listener* sp;
+  GPR_ASSERT(on_accept_cb);
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(!s->on_accept_cb);
+  GPR_ASSERT(s->active_ports == 0);
+  s->on_accept_cb = on_accept_cb;
+  s->on_accept_cb_arg = on_accept_cb_arg;
+  for (sp = s->head; sp; sp = sp->next) {
+    GPR_ASSERT(GRPC_LOG_IF_ERROR("start_accept", start_accept_locked(sp)));
+    s->active_ports++;
+  }
+  gpr_mu_unlock(&s->mu);
+}
+
+static unsigned tcp_server_port_fd_count(grpc_tcp_server* s,
+                                         unsigned port_index) {
+  return 0;
+}
+
+static int tcp_server_port_fd(grpc_tcp_server* s, unsigned port_index,
+                              unsigned fd_index) {
+  return -1;
+}
+
+static grpc_core::TcpServerFdHandler* tcp_server_create_fd_handler(
+    grpc_tcp_server* s) {
+  return nullptr;
+}
+
+static void tcp_server_shutdown_listeners(grpc_tcp_server* s) {}
+
+grpc_tcp_server_vtable grpc_windows_tcp_server_vtable = {
+    tcp_server_create,        tcp_server_start,
+    tcp_server_add_port,      tcp_server_create_fd_handler,
+    tcp_server_port_fd_count, tcp_server_port_fd,
+    tcp_server_ref,           tcp_server_shutdown_starting_add,
+    tcp_server_unref,         tcp_server_shutdown_listeners};
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_uv.cc
new file mode 100644
index 0000000..f0847a1
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_uv.cc	
@@ -0,0 +1,418 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/resolve_address_custom.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/iomgr/tcp_custom.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#include <uv.h>
+
+#define IGNORE_CONST(addr) ((grpc_sockaddr*)(uintptr_t)(addr))
+
+typedef struct uv_socket_t {
+  uv_connect_t connect_req;
+  uv_write_t write_req;
+  uv_shutdown_t shutdown_req;
+  uv_tcp_t* handle;
+  uv_buf_t* write_buffers;
+
+  char* read_buf;
+  size_t read_len;
+
+  int pending_connections;
+  grpc_custom_socket* accept_socket;
+  grpc_error* accept_error;
+
+  grpc_custom_connect_callback connect_cb;
+  grpc_custom_write_callback write_cb;
+  grpc_custom_read_callback read_cb;
+  grpc_custom_accept_callback accept_cb;
+  grpc_custom_close_callback close_cb;
+
+} uv_socket_t;
+
+static grpc_error* tcp_error_create(const char* desc, int status) {
+  if (status == 0) {
+    return GRPC_ERROR_NONE;
+  }
+  grpc_error* error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(desc);
+  /* All tcp errors are marked with UNAVAILABLE so that application may
+   * choose to retry. */
+  error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS,
+                             GRPC_STATUS_UNAVAILABLE);
+  return grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
+                            grpc_slice_from_static_string(uv_strerror(status)));
+}
+
+static void uv_socket_destroy(grpc_custom_socket* socket) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  gpr_free(uv_socket->handle);
+  gpr_free(uv_socket);
+}
+
+static void alloc_uv_buf(uv_handle_t* handle, size_t suggested_size,
+                         uv_buf_t* buf) {
+  uv_socket_t* uv_socket =
+      (uv_socket_t*)((grpc_custom_socket*)handle->data)->impl;
+  (void)suggested_size;
+  buf->base = uv_socket->read_buf;
+  buf->len = uv_socket->read_len;
+}
+
+static void uv_read_callback(uv_stream_t* stream, ssize_t nread,
+                             const uv_buf_t* buf) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (nread == 0) {
+    // Nothing happened. Wait for the next callback
+    return;
+  }
+  // TODO(murgatroid99): figure out what the return value here means
+  uv_read_stop(stream);
+  if (nread == UV_EOF) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("EOF");
+  } else if (nread < 0) {
+    error = tcp_error_create("TCP Read failed", nread);
+  }
+  grpc_custom_socket* socket = (grpc_custom_socket*)stream->data;
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_socket->read_cb(socket, (size_t)nread, error);
+}
+
+static void uv_close_callback(uv_handle_t* handle) {
+  grpc_custom_socket* socket = (grpc_custom_socket*)handle->data;
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  if (uv_socket->accept_socket) {
+    uv_socket->accept_cb(socket, uv_socket->accept_socket,
+                         GRPC_ERROR_CREATE_FROM_STATIC_STRING("socket closed"));
+  }
+  uv_socket->close_cb(socket);
+}
+
+static void uv_socket_read(grpc_custom_socket* socket, char* buffer,
+                           size_t length, grpc_custom_read_callback read_cb) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  int status;
+  grpc_error* error;
+  uv_socket->read_cb = read_cb;
+  uv_socket->read_buf = buffer;
+  uv_socket->read_len = length;
+  // TODO(murgatroid99): figure out what the return value here means
+  status =
+      uv_read_start((uv_stream_t*)uv_socket->handle, (uv_alloc_cb)alloc_uv_buf,
+                    (uv_read_cb)uv_read_callback);
+  if (status != 0) {
+    error = tcp_error_create("TCP Read failed at start", status);
+    uv_socket->read_cb(socket, 0, error);
+  }
+}
+
+static void uv_write_callback(uv_write_t* req, int status) {
+  grpc_custom_socket* socket = (grpc_custom_socket*)req->data;
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  gpr_free(uv_socket->write_buffers);
+  uv_socket->write_cb(socket, tcp_error_create("TCP Write failed", status));
+}
+
+void uv_socket_write(grpc_custom_socket* socket,
+                     grpc_slice_buffer* write_slices,
+                     grpc_custom_write_callback write_cb) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_socket->write_cb = write_cb;
+  uv_buf_t* uv_buffers;
+  uv_write_t* write_req;
+
+  uv_buffers = (uv_buf_t*)gpr_malloc(sizeof(uv_buf_t) * write_slices->count);
+  for (size_t i = 0; i < write_slices->count; i++) {
+    uv_buffers[i].base = (char*)GRPC_SLICE_START_PTR(write_slices->slices[i]);
+    uv_buffers[i].len = GRPC_SLICE_LENGTH(write_slices->slices[i]);
+  }
+
+  uv_socket->write_buffers = uv_buffers;
+  write_req = &uv_socket->write_req;
+  write_req->data = socket;
+  // TODO(murgatroid99): figure out what the return value here means
+  uv_write(write_req, (uv_stream_t*)uv_socket->handle, uv_buffers,
+           write_slices->count, uv_write_callback);
+}
+
+static void shutdown_callback(uv_shutdown_t* req, int status) {}
+
+static void uv_socket_shutdown(grpc_custom_socket* socket) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_shutdown_t* req = &uv_socket->shutdown_req;
+  uv_shutdown(req, (uv_stream_t*)uv_socket->handle, shutdown_callback);
+}
+
+static void uv_socket_close(grpc_custom_socket* socket,
+                            grpc_custom_close_callback close_cb) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_socket->close_cb = close_cb;
+  uv_close((uv_handle_t*)uv_socket->handle, uv_close_callback);
+}
+
+static grpc_error* uv_socket_init_helper(uv_socket_t* uv_socket, int domain) {
+  uv_tcp_t* tcp = (uv_tcp_t*)gpr_malloc(sizeof(uv_tcp_t));
+  uv_socket->handle = tcp;
+  int status = uv_tcp_init_ex(uv_default_loop(), tcp, (unsigned int)domain);
+  if (status != 0) {
+    return tcp_error_create("Failed to initialize UV tcp handle", status);
+  }
+#if defined(GPR_LINUX) && defined(SO_REUSEPORT)
+  if (domain == AF_INET || domain == AF_INET6) {
+    int enable = 1;
+    int fd;
+    uv_fileno((uv_handle_t*)tcp, &fd);
+    // TODO Handle error here.
+    setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &enable, sizeof(enable));
+  }
+#endif
+  uv_socket->write_buffers = nullptr;
+  uv_socket->read_len = 0;
+  uv_tcp_nodelay(uv_socket->handle, 1);
+  // Node uses a garbage collector to call destructors, so we don't
+  // want to hold the uv loop open with active gRPC objects.
+  uv_unref((uv_handle_t*)uv_socket->handle);
+  uv_socket->pending_connections = 0;
+  uv_socket->accept_socket = nullptr;
+  uv_socket->accept_error = GRPC_ERROR_NONE;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* uv_socket_init(grpc_custom_socket* socket, int domain) {
+  uv_socket_t* uv_socket = (uv_socket_t*)gpr_malloc(sizeof(uv_socket_t));
+  grpc_error* error = uv_socket_init_helper(uv_socket, domain);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+  uv_socket->handle->data = socket;
+  socket->impl = uv_socket;
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* uv_socket_getpeername(grpc_custom_socket* socket,
+                                         const grpc_sockaddr* addr,
+                                         int* addr_len) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  int err = uv_tcp_getpeername(uv_socket->handle,
+                               (struct sockaddr*)IGNORE_CONST(addr), addr_len);
+  return tcp_error_create("getpeername failed", err);
+}
+
+static grpc_error* uv_socket_getsockname(grpc_custom_socket* socket,
+                                         const grpc_sockaddr* addr,
+                                         int* addr_len) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  int err = uv_tcp_getsockname(uv_socket->handle,
+                               (struct sockaddr*)IGNORE_CONST(addr), addr_len);
+  return tcp_error_create("getsockname failed", err);
+}
+
+static void accept_new_connection(grpc_custom_socket* socket) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  if (uv_socket->pending_connections == 0 || !uv_socket->accept_socket) {
+    return;
+  }
+  grpc_custom_socket* new_socket = uv_socket->accept_socket;
+  grpc_error* error = uv_socket->accept_error;
+  uv_socket->accept_socket = nullptr;
+  uv_socket->accept_error = GRPC_ERROR_NONE;
+  uv_socket->pending_connections -= 1;
+  if (uv_socket->accept_error != GRPC_ERROR_NONE) {
+    uv_stream_t dummy_handle;
+    uv_accept((uv_stream_t*)uv_socket->handle, &dummy_handle);
+    uv_socket->accept_cb(socket, new_socket, error);
+  } else {
+    uv_socket_t* uv_new_socket = (uv_socket_t*)gpr_malloc(sizeof(uv_socket_t));
+    uv_socket_init_helper(uv_new_socket, AF_UNSPEC);
+    // UV documentation says this is guaranteed to succeed
+    GPR_ASSERT(uv_accept((uv_stream_t*)uv_socket->handle,
+                         (uv_stream_t*)uv_new_socket->handle) == 0);
+    new_socket->impl = uv_new_socket;
+    uv_new_socket->handle->data = new_socket;
+    uv_socket->accept_cb(socket, new_socket, error);
+  }
+}
+
+static void uv_on_connect(uv_stream_t* server, int status) {
+  grpc_custom_socket* socket = (grpc_custom_socket*)server->data;
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  if (status < 0) {
+    switch (status) {
+      case UV_EINTR:
+      case UV_EAGAIN:
+        return;
+      default:
+        uv_socket->accept_error = tcp_error_create("accept failed", status);
+    }
+  }
+  uv_socket->pending_connections += 1;
+  accept_new_connection(socket);
+}
+
+void uv_socket_accept(grpc_custom_socket* socket,
+                      grpc_custom_socket* new_socket,
+                      grpc_custom_accept_callback accept_cb) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_socket->accept_cb = accept_cb;
+  GPR_ASSERT(uv_socket->accept_socket == nullptr);
+  uv_socket->accept_socket = new_socket;
+  accept_new_connection(socket);
+}
+
+static grpc_error* uv_socket_bind(grpc_custom_socket* socket,
+                                  const grpc_sockaddr* addr, size_t len,
+                                  int flags) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  int status =
+      uv_tcp_bind((uv_tcp_t*)uv_socket->handle, (struct sockaddr*)addr, 0);
+  return tcp_error_create("Failed to bind to port", status);
+}
+
+static grpc_error* uv_socket_listen(grpc_custom_socket* socket) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  int status =
+      uv_listen((uv_stream_t*)uv_socket->handle, SOMAXCONN, uv_on_connect);
+  return tcp_error_create("Failed to listen to port", status);
+}
+
+static void uv_tc_on_connect(uv_connect_t* req, int status) {
+  grpc_custom_socket* socket = (grpc_custom_socket*)req->data;
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  grpc_error* error;
+  if (status == UV_ECANCELED) {
+    // This should only happen if the handle is already closed
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Timeout occurred");
+  } else {
+    error = tcp_error_create("Failed to connect to remote host", status);
+  }
+  uv_socket->connect_cb(socket, error);
+}
+
+static void uv_socket_connect(grpc_custom_socket* socket,
+                              const grpc_sockaddr* addr, size_t len,
+                              grpc_custom_connect_callback connect_cb) {
+  uv_socket_t* uv_socket = (uv_socket_t*)socket->impl;
+  uv_socket->connect_cb = connect_cb;
+  uv_socket->connect_req.data = socket;
+  int status = uv_tcp_connect(&uv_socket->connect_req, uv_socket->handle,
+                              (struct sockaddr*)addr, uv_tc_on_connect);
+  if (status != 0) {
+    // The callback will not be called
+    uv_socket->connect_cb(socket, tcp_error_create("connect failed", status));
+  }
+}
+
+static grpc_resolved_addresses* handle_addrinfo_result(
+    struct addrinfo* result) {
+  struct addrinfo* resp;
+  size_t i;
+  grpc_resolved_addresses* addresses =
+      (grpc_resolved_addresses*)gpr_malloc(sizeof(grpc_resolved_addresses));
+  addresses->naddrs = 0;
+  for (resp = result; resp != nullptr; resp = resp->ai_next) {
+    addresses->naddrs++;
+  }
+  addresses->addrs = (grpc_resolved_address*)gpr_malloc(
+      sizeof(grpc_resolved_address) * addresses->naddrs);
+  for (resp = result, i = 0; resp != nullptr; resp = resp->ai_next, i++) {
+    memcpy(&addresses->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
+    addresses->addrs[i].len = resp->ai_addrlen;
+  }
+  // addrinfo objects are allocated by libuv (e.g. in uv_getaddrinfo)
+  // and not by gpr_malloc
+  uv_freeaddrinfo(result);
+  return addresses;
+}
+
+static void uv_resolve_callback(uv_getaddrinfo_t* req, int status,
+                                struct addrinfo* res) {
+  grpc_custom_resolver* r = (grpc_custom_resolver*)req->data;
+  gpr_free(req);
+  grpc_resolved_addresses* result = nullptr;
+  if (status == 0) {
+    result = handle_addrinfo_result(res);
+  }
+  grpc_custom_resolve_callback(r, result,
+                               tcp_error_create("getaddrinfo failed", status));
+}
+
+static grpc_error* uv_resolve(char* host, char* port,
+                              grpc_resolved_addresses** result) {
+  int status;
+  uv_getaddrinfo_t req;
+  struct addrinfo hints;
+  memset(&hints, 0, sizeof(struct addrinfo));
+  hints.ai_family = AF_UNSPEC;     /* ipv4 or ipv6 */
+  hints.ai_socktype = SOCK_STREAM; /* stream socket */
+  hints.ai_flags = AI_PASSIVE;     /* for wildcard IP address */
+  status = uv_getaddrinfo(uv_default_loop(), &req, NULL, host, port, &hints);
+  if (status != 0) {
+    *result = nullptr;
+  } else {
+    *result = handle_addrinfo_result(req.addrinfo);
+  }
+  return tcp_error_create("getaddrinfo failed", status);
+}
+
+static void uv_resolve_async(grpc_custom_resolver* r, char* host, char* port) {
+  int status;
+  uv_getaddrinfo_t* req =
+      (uv_getaddrinfo_t*)gpr_malloc(sizeof(uv_getaddrinfo_t));
+  req->data = r;
+  struct addrinfo hints;
+  memset(&hints, 0, sizeof(struct addrinfo));
+  hints.ai_family = GRPC_AF_UNSPEC;     /* ipv4 or ipv6 */
+  hints.ai_socktype = GRPC_SOCK_STREAM; /* stream socket */
+  hints.ai_flags = GRPC_AI_PASSIVE;     /* for wildcard IP address */
+  status = uv_getaddrinfo(uv_default_loop(), req, uv_resolve_callback, host,
+                          port, &hints);
+  if (status != 0) {
+    gpr_free(req);
+    grpc_error* error = tcp_error_create("getaddrinfo failed", status);
+    grpc_custom_resolve_callback(r, NULL, error);
+  }
+}
+
+grpc_custom_resolver_vtable uv_resolver_vtable = {uv_resolve, uv_resolve_async};
+
+grpc_socket_vtable grpc_uv_socket_vtable = {
+    uv_socket_init,     uv_socket_connect,     uv_socket_destroy,
+    uv_socket_shutdown, uv_socket_close,       uv_socket_write,
+    uv_socket_read,     uv_socket_getpeername, uv_socket_getsockname,
+    uv_socket_bind,     uv_socket_listen,      uv_socket_accept};
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.cc
new file mode 100644
index 0000000..ab5a2a2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.cc	
@@ -0,0 +1,533 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+
+#include <limits.h>
+
+#include "src/core/lib/iomgr/sockaddr_windows.h"
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_windows.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#if defined(__MSYS__) && defined(GPR_ARCH_64)
+/* Nasty workaround for nasty bug when using the 64 bits msys compiler
+   in conjunction with Microsoft Windows headers. */
+#define GRPC_FIONBIO _IOW('f', 126, uint32_t)
+#else
+#define GRPC_FIONBIO FIONBIO
+#endif
+
+extern grpc_core::TraceFlag grpc_tcp_trace;
+
+grpc_error* grpc_tcp_set_non_block(SOCKET sock) {
+  int status;
+  uint32_t param = 1;
+  DWORD ret;
+  status = WSAIoctl(sock, GRPC_FIONBIO, &param, sizeof(param), NULL, 0, &ret,
+                    NULL, NULL);
+  return status == 0
+             ? GRPC_ERROR_NONE
+             : GRPC_WSA_ERROR(WSAGetLastError(), "WSAIoctl(GRPC_FIONBIO)");
+}
+
+static grpc_error* set_dualstack(SOCKET sock) {
+  int status;
+  unsigned long param = 0;
+  status = setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&param,
+                      sizeof(param));
+  return status == 0
+             ? GRPC_ERROR_NONE
+             : GRPC_WSA_ERROR(WSAGetLastError(), "setsockopt(IPV6_V6ONLY)");
+}
+
+static grpc_error* enable_socket_low_latency(SOCKET sock) {
+  int status;
+  BOOL param = TRUE;
+  status = ::setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
+                        reinterpret_cast<char*>(&param), sizeof(param));
+  if (status == SOCKET_ERROR) {
+    status = WSAGetLastError();
+  }
+  return status == 0 ? GRPC_ERROR_NONE
+                     : GRPC_WSA_ERROR(status, "setsockopt(TCP_NODELAY)");
+}
+
+grpc_error* grpc_tcp_prepare_socket(SOCKET sock) {
+  grpc_error* err;
+  err = grpc_tcp_set_non_block(sock);
+  if (err != GRPC_ERROR_NONE) return err;
+  err = set_dualstack(sock);
+  if (err != GRPC_ERROR_NONE) return err;
+  err = enable_socket_low_latency(sock);
+  if (err != GRPC_ERROR_NONE) return err;
+  return GRPC_ERROR_NONE;
+}
+
+typedef struct grpc_tcp {
+  /* This is our C++ class derivation emulation. */
+  grpc_endpoint base;
+  /* The one socket this endpoint is using. */
+  grpc_winsocket* socket;
+  /* Refcounting how many operations are in progress. */
+  gpr_refcount refcount;
+
+  grpc_closure on_read;
+  grpc_closure on_write;
+
+  grpc_closure* read_cb;
+  grpc_closure* write_cb;
+
+  /* garbage after the last read */
+  grpc_slice_buffer last_read_buffer;
+
+  grpc_slice_buffer* write_slices;
+  grpc_slice_buffer* read_slices;
+
+  grpc_resource_user* resource_user;
+
+  /* The IO Completion Port runs from another thread. We need some mechanism
+     to protect ourselves when requesting a shutdown. */
+  gpr_mu mu;
+  int shutting_down;
+  grpc_error* shutdown_error;
+
+  char* peer_string;
+} grpc_tcp;
+
+static void tcp_free(grpc_tcp* tcp) {
+  grpc_winsocket_destroy(tcp->socket);
+  gpr_mu_destroy(&tcp->mu);
+  gpr_free(tcp->peer_string);
+  grpc_slice_buffer_destroy_internal(&tcp->last_read_buffer);
+  grpc_resource_user_unref(tcp->resource_user);
+  if (tcp->shutting_down) GRPC_ERROR_UNREF(tcp->shutdown_error);
+  gpr_free(tcp);
+}
+
+#ifndef NDEBUG
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp), (reason), __FILE__, __LINE__)
+#define TCP_REF(tcp, reason) tcp_ref((tcp), (reason), __FILE__, __LINE__)
+static void tcp_unref(grpc_tcp* tcp, const char* reason, const char* file,
+                      int line) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "TCP unref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp, reason, val,
+            val - 1);
+  }
+  if (gpr_unref(&tcp->refcount)) {
+    tcp_free(tcp);
+  }
+}
+
+static void tcp_ref(grpc_tcp* tcp, const char* reason, const char* file,
+                    int line) {
+  if (grpc_tcp_trace.enabled()) {
+    gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "TCP   ref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp, reason, val,
+            val + 1);
+  }
+  gpr_ref(&tcp->refcount);
+}
+#else
+#define TCP_UNREF(tcp, reason) tcp_unref((tcp))
+#define TCP_REF(tcp, reason) tcp_ref((tcp))
+static void tcp_unref(grpc_tcp* tcp) {
+  if (gpr_unref(&tcp->refcount)) {
+    tcp_free(tcp);
+  }
+}
+
+static void tcp_ref(grpc_tcp* tcp) { gpr_ref(&tcp->refcount); }
+#endif
+
+/* Asynchronous callback from the IOCP, or the background thread. */
+static void on_read(void* tcpp, grpc_error* error) {
+  grpc_tcp* tcp = (grpc_tcp*)tcpp;
+  grpc_closure* cb = tcp->read_cb;
+  grpc_winsocket* socket = tcp->socket;
+  grpc_winsocket_callback_info* info = &socket->read_info;
+
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_INFO, "TCP:%p on_read", tcp);
+  }
+
+  GRPC_ERROR_REF(error);
+
+  if (error == GRPC_ERROR_NONE) {
+    if (info->wsa_error != 0 && !tcp->shutting_down) {
+      char* utf8_message = gpr_format_message(info->wsa_error);
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(utf8_message);
+      gpr_free(utf8_message);
+      grpc_slice_buffer_reset_and_unref_internal(tcp->read_slices);
+    } else {
+      if (info->bytes_transferred != 0 && !tcp->shutting_down) {
+        GPR_ASSERT((size_t)info->bytes_transferred <= tcp->read_slices->length);
+        if (static_cast<size_t>(info->bytes_transferred) !=
+            tcp->read_slices->length) {
+          grpc_slice_buffer_trim_end(
+              tcp->read_slices,
+              tcp->read_slices->length -
+                  static_cast<size_t>(info->bytes_transferred),
+              &tcp->last_read_buffer);
+        }
+        GPR_ASSERT((size_t)info->bytes_transferred == tcp->read_slices->length);
+
+        if (grpc_tcp_trace.enabled()) {
+          size_t i;
+          for (i = 0; i < tcp->read_slices->count; i++) {
+            char* dump = grpc_dump_slice(tcp->read_slices->slices[i],
+                                         GPR_DUMP_HEX | GPR_DUMP_ASCII);
+            gpr_log(GPR_INFO, "READ %p (peer=%s): %s", tcp, tcp->peer_string,
+                    dump);
+            gpr_free(dump);
+          }
+        }
+      } else {
+        if (grpc_tcp_trace.enabled()) {
+          gpr_log(GPR_INFO, "TCP:%p unref read_slice", tcp);
+        }
+        grpc_slice_buffer_reset_and_unref_internal(tcp->read_slices);
+        error = tcp->shutting_down
+                    ? GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                          "TCP stream shutting down", &tcp->shutdown_error, 1)
+                    : GRPC_ERROR_CREATE_FROM_STATIC_STRING("End of TCP stream");
+      }
+    }
+  }
+
+  tcp->read_cb = NULL;
+  TCP_UNREF(tcp, "read");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+#define DEFAULT_TARGET_READ_SIZE 8192
+#define MAX_WSABUF_COUNT 16
+static void win_read(grpc_endpoint* ep, grpc_slice_buffer* read_slices,
+                     grpc_closure* cb, bool urgent) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  grpc_winsocket* handle = tcp->socket;
+  grpc_winsocket_callback_info* info = &handle->read_info;
+  int status;
+  DWORD bytes_read = 0;
+  DWORD flags = 0;
+  WSABUF buffers[MAX_WSABUF_COUNT];
+  size_t i;
+
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_INFO, "TCP:%p win_read", tcp);
+  }
+
+  if (tcp->shutting_down) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, cb,
+        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+            "TCP socket is shutting down", &tcp->shutdown_error, 1));
+    return;
+  }
+
+  tcp->read_cb = cb;
+  tcp->read_slices = read_slices;
+  grpc_slice_buffer_reset_and_unref_internal(read_slices);
+  grpc_slice_buffer_swap(read_slices, &tcp->last_read_buffer);
+
+  if (tcp->read_slices->length < DEFAULT_TARGET_READ_SIZE / 2 &&
+      tcp->read_slices->count < MAX_WSABUF_COUNT) {
+    // TODO(jtattermusch): slice should be allocated using resource quota
+    grpc_slice_buffer_add(tcp->read_slices,
+                          GRPC_SLICE_MALLOC(DEFAULT_TARGET_READ_SIZE));
+  }
+
+  GPR_ASSERT(tcp->read_slices->count <= MAX_WSABUF_COUNT);
+  for (i = 0; i < tcp->read_slices->count; i++) {
+    buffers[i].len = (ULONG)GRPC_SLICE_LENGTH(
+        tcp->read_slices->slices[i]);  // we know slice size fits in 32bit.
+    buffers[i].buf = (char*)GRPC_SLICE_START_PTR(tcp->read_slices->slices[i]);
+  }
+
+  TCP_REF(tcp, "read");
+
+  /* First let's try a synchronous, non-blocking read. */
+  status = WSARecv(tcp->socket->socket, buffers, (DWORD)tcp->read_slices->count,
+                   &bytes_read, &flags, NULL, NULL);
+  info->wsa_error = status == 0 ? 0 : WSAGetLastError();
+
+  /* Did we get data immediately ? Yay. */
+  if (info->wsa_error != WSAEWOULDBLOCK) {
+    info->bytes_transferred = bytes_read;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &tcp->on_read, GRPC_ERROR_NONE);
+    return;
+  }
+
+  /* Otherwise, let's retry, by queuing a read. */
+  memset(&tcp->socket->read_info.overlapped, 0, sizeof(OVERLAPPED));
+  status = WSARecv(tcp->socket->socket, buffers, (DWORD)tcp->read_slices->count,
+                   &bytes_read, &flags, &info->overlapped, NULL);
+
+  if (status != 0) {
+    int wsa_error = WSAGetLastError();
+    if (wsa_error != WSA_IO_PENDING) {
+      info->wsa_error = wsa_error;
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, &tcp->on_read,
+                              GRPC_WSA_ERROR(info->wsa_error, "WSARecv"));
+      return;
+    }
+  }
+
+  grpc_socket_notify_on_read(tcp->socket, &tcp->on_read);
+}
+
+/* Asynchronous callback from the IOCP, or the background thread. */
+static void on_write(void* tcpp, grpc_error* error) {
+  grpc_tcp* tcp = (grpc_tcp*)tcpp;
+  grpc_winsocket* handle = tcp->socket;
+  grpc_winsocket_callback_info* info = &handle->write_info;
+  grpc_closure* cb;
+
+  if (grpc_tcp_trace.enabled()) {
+    gpr_log(GPR_INFO, "TCP:%p on_write", tcp);
+  }
+
+  GRPC_ERROR_REF(error);
+
+  gpr_mu_lock(&tcp->mu);
+  cb = tcp->write_cb;
+  tcp->write_cb = NULL;
+  gpr_mu_unlock(&tcp->mu);
+
+  if (error == GRPC_ERROR_NONE) {
+    if (info->wsa_error != 0) {
+      error = GRPC_WSA_ERROR(info->wsa_error, "WSASend");
+    } else {
+      GPR_ASSERT(info->bytes_transferred == tcp->write_slices->length);
+    }
+  }
+
+  TCP_UNREF(tcp, "write");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+}
+
+/* Initiates a write. */
+static void win_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
+                      grpc_closure* cb, void* arg) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  grpc_winsocket* socket = tcp->socket;
+  grpc_winsocket_callback_info* info = &socket->write_info;
+  unsigned i;
+  DWORD bytes_sent;
+  int status;
+  WSABUF local_buffers[MAX_WSABUF_COUNT];
+  WSABUF* allocated = NULL;
+  WSABUF* buffers = local_buffers;
+  size_t len;
+
+  if (grpc_tcp_trace.enabled()) {
+    size_t i;
+    for (i = 0; i < slices->count; i++) {
+      char* data =
+          grpc_dump_slice(slices->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_INFO, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data);
+      gpr_free(data);
+    }
+  }
+
+  if (tcp->shutting_down) {
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, cb,
+        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+            "TCP socket is shutting down", &tcp->shutdown_error, 1));
+    return;
+  }
+
+  tcp->write_cb = cb;
+  tcp->write_slices = slices;
+  GPR_ASSERT(tcp->write_slices->count <= UINT_MAX);
+  if (tcp->write_slices->count > GPR_ARRAY_SIZE(local_buffers)) {
+    buffers = (WSABUF*)gpr_malloc(sizeof(WSABUF) * tcp->write_slices->count);
+    allocated = buffers;
+  }
+
+  for (i = 0; i < tcp->write_slices->count; i++) {
+    len = GRPC_SLICE_LENGTH(tcp->write_slices->slices[i]);
+    GPR_ASSERT(len <= ULONG_MAX);
+    buffers[i].len = (ULONG)len;
+    buffers[i].buf = (char*)GRPC_SLICE_START_PTR(tcp->write_slices->slices[i]);
+  }
+
+  /* First, let's try a synchronous, non-blocking write. */
+  status = WSASend(socket->socket, buffers, (DWORD)tcp->write_slices->count,
+                   &bytes_sent, 0, NULL, NULL);
+  info->wsa_error = status == 0 ? 0 : WSAGetLastError();
+
+  /* We would kind of expect to get a WSAEWOULDBLOCK here, especially on a busy
+     connection that has its send queue filled up. But if we don't, then we can
+     avoid doing an async write operation at all. */
+  if (info->wsa_error != WSAEWOULDBLOCK) {
+    grpc_error* error = status == 0
+                            ? GRPC_ERROR_NONE
+                            : GRPC_WSA_ERROR(info->wsa_error, "WSASend");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb, error);
+    if (allocated) gpr_free(allocated);
+    return;
+  }
+
+  TCP_REF(tcp, "write");
+
+  /* If we got a WSAEWOULDBLOCK earlier, then we need to re-do the same
+     operation, this time asynchronously. */
+  memset(&socket->write_info.overlapped, 0, sizeof(OVERLAPPED));
+  status = WSASend(socket->socket, buffers, (DWORD)tcp->write_slices->count,
+                   &bytes_sent, 0, &socket->write_info.overlapped, NULL);
+  if (allocated) gpr_free(allocated);
+
+  if (status != 0) {
+    int wsa_error = WSAGetLastError();
+    if (wsa_error != WSA_IO_PENDING) {
+      TCP_UNREF(tcp, "write");
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, cb,
+                              GRPC_WSA_ERROR(wsa_error, "WSASend"));
+      return;
+    }
+  }
+
+  /* As all is now setup, we can now ask for the IOCP notification. It may
+     trigger the callback immediately however, but no matter. */
+  grpc_socket_notify_on_write(socket, &tcp->on_write);
+}
+
+static void win_add_to_pollset(grpc_endpoint* ep, grpc_pollset* ps) {
+  grpc_tcp* tcp;
+  (void)ps;
+  tcp = (grpc_tcp*)ep;
+  grpc_iocp_add_socket(tcp->socket);
+}
+
+static void win_add_to_pollset_set(grpc_endpoint* ep, grpc_pollset_set* pss) {
+  grpc_tcp* tcp;
+  (void)pss;
+  tcp = (grpc_tcp*)ep;
+  grpc_iocp_add_socket(tcp->socket);
+}
+
+static void win_delete_from_pollset_set(grpc_endpoint* ep,
+                                        grpc_pollset_set* pss) {}
+
+/* Initiates a shutdown of the TCP endpoint. This will queue abort callbacks
+   for the potential read and write operations. It is up to the caller to
+   guarantee this isn't called in parallel to a read or write request, so
+   we're not going to protect against these. However the IO Completion Port
+   callback will happen from another thread, so we need to protect against
+   concurrent access of the data structure in that regard. */
+static void win_shutdown(grpc_endpoint* ep, grpc_error* why) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  gpr_mu_lock(&tcp->mu);
+  /* At that point, what may happen is that we're already inside the IOCP
+     callback. See the comments in on_read and on_write. */
+  if (!tcp->shutting_down) {
+    tcp->shutting_down = 1;
+    tcp->shutdown_error = why;
+  } else {
+    GRPC_ERROR_UNREF(why);
+  }
+  grpc_winsocket_shutdown(tcp->socket);
+  gpr_mu_unlock(&tcp->mu);
+  grpc_resource_user_shutdown(tcp->resource_user);
+}
+
+static void win_destroy(grpc_endpoint* ep) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  grpc_slice_buffer_reset_and_unref_internal(&tcp->last_read_buffer);
+  TCP_UNREF(tcp, "destroy");
+}
+
+static char* win_get_peer(grpc_endpoint* ep) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  return gpr_strdup(tcp->peer_string);
+}
+
+static grpc_resource_user* win_get_resource_user(grpc_endpoint* ep) {
+  grpc_tcp* tcp = (grpc_tcp*)ep;
+  return tcp->resource_user;
+}
+
+static int win_get_fd(grpc_endpoint* ep) { return -1; }
+
+static bool win_can_track_err(grpc_endpoint* ep) { return false; }
+
+static grpc_endpoint_vtable vtable = {win_read,
+                                      win_write,
+                                      win_add_to_pollset,
+                                      win_add_to_pollset_set,
+                                      win_delete_from_pollset_set,
+                                      win_shutdown,
+                                      win_destroy,
+                                      win_get_resource_user,
+                                      win_get_peer,
+                                      win_get_fd,
+                                      win_can_track_err};
+
+grpc_endpoint* grpc_tcp_create(grpc_winsocket* socket,
+                               grpc_channel_args* channel_args,
+                               const char* peer_string) {
+  grpc_resource_quota* resource_quota = grpc_resource_quota_create(NULL);
+  if (channel_args != NULL) {
+    for (size_t i = 0; i < channel_args->num_args; i++) {
+      if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
+        grpc_resource_quota_unref_internal(resource_quota);
+        resource_quota = grpc_resource_quota_ref_internal(
+            (grpc_resource_quota*)channel_args->args[i].value.pointer.p);
+      }
+    }
+  }
+  grpc_tcp* tcp = (grpc_tcp*)gpr_malloc(sizeof(grpc_tcp));
+  memset(tcp, 0, sizeof(grpc_tcp));
+  tcp->base.vtable = &vtable;
+  tcp->socket = socket;
+  gpr_mu_init(&tcp->mu);
+  gpr_ref_init(&tcp->refcount, 1);
+  GRPC_CLOSURE_INIT(&tcp->on_read, on_read, tcp, grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&tcp->on_write, on_write, tcp, grpc_schedule_on_exec_ctx);
+  tcp->peer_string = gpr_strdup(peer_string);
+  grpc_slice_buffer_init(&tcp->last_read_buffer);
+  tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
+  grpc_resource_quota_unref_internal(resource_quota);
+
+  return &tcp->base;
+}
+
+#endif /* GRPC_WINSOCK_SOCKET */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.h
new file mode 100644
index 0000000..04ef810
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/tcp_windows.h	
@@ -0,0 +1,53 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
+/*
+   Low level TCP "bottom half" implementation, for use by transports built on
+   top of a TCP connection.
+
+   Note that this file does not (yet) include APIs for creating the socket in
+   the first place.
+
+   All calls passing slice transfer ownership of a slice refcount unless
+   otherwise specified.
+*/
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_WINSOCK_SOCKET
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+
+/* Create a tcp endpoint given a winsock handle.
+ * Takes ownership of the handle.
+ */
+grpc_endpoint* grpc_tcp_create(grpc_winsocket* socket,
+                               grpc_channel_args* channel_args,
+                               const char* peer_string);
+
+grpc_error* grpc_tcp_prepare_socket(SOCKET sock);
+
+grpc_error* grpc_tcp_set_non_block(SOCKET sock);
+
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.cc
new file mode 100644
index 0000000..6369e48
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.cc	
@@ -0,0 +1,64 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/time_averaged_stats.h"
+
+void grpc_time_averaged_stats_init(grpc_time_averaged_stats* stats,
+                                   double init_avg, double regress_weight,
+                                   double persistence_factor) {
+  stats->init_avg = init_avg;
+  stats->regress_weight = regress_weight;
+  stats->persistence_factor = persistence_factor;
+  stats->batch_total_value = 0;
+  stats->batch_num_samples = 0;
+  stats->aggregate_total_weight = 0;
+  stats->aggregate_weighted_avg = init_avg;
+}
+
+void grpc_time_averaged_stats_add_sample(grpc_time_averaged_stats* stats,
+                                         double value) {
+  stats->batch_total_value += value;
+  ++stats->batch_num_samples;
+}
+
+double grpc_time_averaged_stats_update_average(
+    grpc_time_averaged_stats* stats) {
+  /* Start with the current batch: */
+  double weighted_sum = stats->batch_total_value;
+  double total_weight = stats->batch_num_samples;
+  if (stats->regress_weight > 0) {
+    /* Add in the regression towards init_avg_: */
+    weighted_sum += stats->regress_weight * stats->init_avg;
+    total_weight += stats->regress_weight;
+  }
+  if (stats->persistence_factor > 0) {
+    /* Add in the persistence: */
+    const double prev_sample_weight =
+        stats->persistence_factor * stats->aggregate_total_weight;
+    weighted_sum += prev_sample_weight * stats->aggregate_weighted_avg;
+    total_weight += prev_sample_weight;
+  }
+  stats->aggregate_weighted_avg =
+      (total_weight > 0) ? (weighted_sum / total_weight) : stats->init_avg;
+  stats->aggregate_total_weight = total_weight;
+  stats->batch_num_samples = 0;
+  stats->batch_total_value = 0;
+  return stats->aggregate_weighted_avg;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.h
new file mode 100644
index 0000000..8745f7f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/time_averaged_stats.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
+#define GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
+
+/* This tracks a time-decaying weighted average.  It works by collecting
+   batches of samples and then mixing their average into a time-decaying
+   weighted mean.  It is designed for batch operations where we do many adds
+   before updating the average. */
+
+typedef struct {
+  /* The initial average value.  This is the reported average until the first
+     grpc_time_averaged_stats_update_average call.  If a positive regress_weight
+     is used, we also regress towards this value on each update. */
+  double init_avg;
+  /* The sample weight of "init_avg" that is mixed in with each call to
+     grpc_time_averaged_stats_update_average.  If the calls to
+     grpc_time_averaged_stats_add_sample stop, this will cause the average to
+     regress back to the mean.  This should be non-negative.  Set it to 0 to
+     disable the bias.  A value of 1 has the effect of adding in 1 bonus sample
+     with value init_avg to each sample period. */
+  double regress_weight;
+  /* This determines the rate of decay of the time-averaging from one period
+     to the next by scaling the aggregate_total_weight of samples from prior
+     periods when combining with the latest period.  It should be in the range
+     [0,1].  A higher value adapts more slowly.  With a value of 0.5, if the
+     batches each have k samples, the samples_in_avg_ will grow to 2 k, so the
+     weighting of the time average will eventually be 1/3 new batch and 2/3
+     old average. */
+  double persistence_factor;
+
+  /* The total value of samples since the last UpdateAverage(). */
+  double batch_total_value;
+  /* The number of samples since the last UpdateAverage(). */
+  double batch_num_samples;
+  /* The time-decayed sum of batch_num_samples_ over previous batches.  This is
+     the "weight" of the old aggregate_weighted_avg_ when updating the
+     average. */
+  double aggregate_total_weight;
+  /* A time-decayed average of the (batch_total_value_ / batch_num_samples_),
+     computed by decaying the samples_in_avg_ weight in the weighted average. */
+  double aggregate_weighted_avg;
+} grpc_time_averaged_stats;
+
+/* See the comments on the members above for an explanation of init_avg,
+   regress_weight, and persistence_factor. */
+void grpc_time_averaged_stats_init(grpc_time_averaged_stats* stats,
+                                   double init_avg, double regress_weight,
+                                   double persistence_factor);
+/* Add a sample to the current batch. */
+void grpc_time_averaged_stats_add_sample(grpc_time_averaged_stats* stats,
+                                         double value);
+/* Complete a batch and compute the new estimate of the average sample
+   value. */
+double grpc_time_averaged_stats_update_average(grpc_time_averaged_stats* stats);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.cc
new file mode 100644
index 0000000..e647cde
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.cc	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+
+grpc_timer_vtable* grpc_timer_impl;
+
+void grpc_set_timer_impl(grpc_timer_vtable* vtable) {
+  grpc_timer_impl = vtable;
+}
+
+void grpc_timer_init(grpc_timer* timer, grpc_millis deadline,
+                     grpc_closure* closure) {
+  grpc_timer_impl->init(timer, deadline, closure);
+}
+
+void grpc_timer_cancel(grpc_timer* timer) { grpc_timer_impl->cancel(timer); }
+
+grpc_timer_check_result grpc_timer_check(grpc_millis* next) {
+  return grpc_timer_impl->check(next);
+}
+
+void grpc_timer_list_init() { grpc_timer_impl->list_init(); }
+
+void grpc_timer_list_shutdown() { grpc_timer_impl->list_shutdown(); }
+
+void grpc_timer_consume_kick() { grpc_timer_impl->consume_kick(); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.h
new file mode 100644
index 0000000..11da149
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
+
+typedef struct grpc_timer {
+  grpc_millis deadline;
+  // Uninitialized if not using heap, or INVALID_HEAP_INDEX if not in heap.
+  uint32_t heap_index;
+  bool pending;
+  struct grpc_timer* next;
+  struct grpc_timer* prev;
+  grpc_closure* closure;
+#ifndef NDEBUG
+  struct grpc_timer* hash_table_next;
+#endif
+
+  // Optional field used by custom timers
+  void* custom_timer;
+} grpc_timer;
+
+typedef enum {
+  GRPC_TIMERS_NOT_CHECKED,
+  GRPC_TIMERS_CHECKED_AND_EMPTY,
+  GRPC_TIMERS_FIRED,
+} grpc_timer_check_result;
+
+typedef struct grpc_timer_vtable {
+  void (*init)(grpc_timer* timer, grpc_millis, grpc_closure* closure);
+  void (*cancel)(grpc_timer* timer);
+
+  /* Internal API */
+  grpc_timer_check_result (*check)(grpc_millis* next);
+  void (*list_init)();
+  void (*list_shutdown)(void);
+  void (*consume_kick)(void);
+} grpc_timer_vtable;
+
+/* Initialize *timer. When expired or canceled, closure will be called with
+   error set to indicate if it expired (GRPC_ERROR_NONE) or was canceled
+   (GRPC_ERROR_CANCELLED). *closure is guaranteed to be called exactly once, and
+   application code should check the error to determine how it was invoked. The
+   application callback is also responsible for maintaining information about
+   when to free up any user-level state. Behavior is undefined for a deadline of
+   GRPC_MILLIS_INF_FUTURE. */
+void grpc_timer_init(grpc_timer* timer, grpc_millis deadline,
+                     grpc_closure* closure);
+
+/* Initialize *timer without setting it. This can later be passed through
+   the regular init or cancel */
+void grpc_timer_init_unset(grpc_timer* timer);
+
+/* Note that there is no timer destroy function. This is because the
+   timer is a one-time occurrence with a guarantee that the callback will
+   be called exactly once, either at expiration or cancellation. Thus, all
+   the internal timer event management state is destroyed just before
+   that callback is invoked. If the user has additional state associated with
+   the timer, the user is responsible for determining when it is safe to
+   destroy that state. */
+
+/* Cancel an *timer.
+   There are three cases:
+   1. We normally cancel the timer
+   2. The timer has already run
+   3. We can't cancel the timer because it is "in flight".
+
+   In all of these cases, the cancellation is still considered successful.
+   They are essentially distinguished in that the timer_cb will be run
+   exactly once from either the cancellation (with error GRPC_ERROR_CANCELLED)
+   or from the activation (with error GRPC_ERROR_NONE).
+
+   Note carefully that the callback function MAY occur in the same callstack
+   as grpc_timer_cancel. It's expected that most timers will be cancelled (their
+   primary use is to implement deadlines), and so this code is optimized such
+   that cancellation costs as little as possible. Making callbacks run inline
+   matches this aim.
+
+   Requires: cancel() must happen after init() on a given timer */
+void grpc_timer_cancel(grpc_timer* timer);
+
+/* iomgr internal api for dealing with timers */
+
+/* Check for timers to be run, and run them.
+   Return true if timer callbacks were executed.
+   If next is non-null, TRY to update *next with the next running timer
+   IF that timer occurs before *next current value.
+   *next is never guaranteed to be updated on any given execution; however,
+   with high probability at least one thread in the system will see an update
+   at any time slice. */
+grpc_timer_check_result grpc_timer_check(grpc_millis* next);
+void grpc_timer_list_init();
+void grpc_timer_list_shutdown();
+
+/* Consume a kick issued by grpc_kick_poller */
+void grpc_timer_consume_kick(void);
+
+/* the following must be implemented by each iomgr implementation */
+void grpc_kick_poller(void);
+
+/* Sets the timer implementation */
+void grpc_set_timer_impl(grpc_timer_vtable* vtable);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.cc
new file mode 100644
index 0000000..c550d44
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.cc	
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_custom.h"
+
+static grpc_custom_timer_vtable* custom_timer_impl;
+
+void grpc_custom_timer_callback(grpc_custom_timer* t, grpc_error* /*error*/) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  grpc_timer* timer = t->original;
+  GPR_ASSERT(timer->pending);
+  timer->pending = 0;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, timer->closure, GRPC_ERROR_NONE);
+  custom_timer_impl->stop(t);
+  gpr_free(t);
+}
+
+static void timer_init(grpc_timer* timer, grpc_millis deadline,
+                       grpc_closure* closure) {
+  uint64_t timeout;
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+  if (deadline <= grpc_core::ExecCtx::Get()->Now()) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+    timer->pending = false;
+    return;
+  } else {
+    timeout = deadline - now;
+  }
+  timer->pending = true;
+  timer->closure = closure;
+  grpc_custom_timer* timer_wrapper =
+      (grpc_custom_timer*)gpr_malloc(sizeof(grpc_custom_timer));
+  timer_wrapper->timeout_ms = timeout;
+  timer->custom_timer = (void*)timer_wrapper;
+  timer_wrapper->original = timer;
+  custom_timer_impl->start(timer_wrapper);
+}
+
+static void timer_cancel(grpc_timer* timer) {
+  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
+  grpc_custom_timer* tw = (grpc_custom_timer*)timer->custom_timer;
+  if (timer->pending) {
+    timer->pending = 0;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, timer->closure,
+                            GRPC_ERROR_CANCELLED);
+    custom_timer_impl->stop(tw);
+    gpr_free(tw);
+  }
+}
+
+static grpc_timer_check_result timer_check(grpc_millis* /*next*/) {
+  return GRPC_TIMERS_NOT_CHECKED;
+}
+
+static void timer_list_init() {}
+static void timer_list_shutdown() {}
+
+static void timer_consume_kick(void) {}
+
+static grpc_timer_vtable custom_timer_vtable = {
+    timer_init,      timer_cancel,        timer_check,
+    timer_list_init, timer_list_shutdown, timer_consume_kick};
+
+void grpc_custom_timer_init(grpc_custom_timer_vtable* impl) {
+  custom_timer_impl = impl;
+  grpc_set_timer_impl(&custom_timer_vtable);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.h
new file mode 100644
index 0000000..bfea8ba
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_custom.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct grpc_custom_timer {
+  // Implementation defined
+  void* timer;
+  uint64_t timeout_ms;
+
+  grpc_timer* original;
+} grpc_custom_timer;
+
+typedef struct grpc_custom_timer_vtable {
+  void (*start)(grpc_custom_timer* t);
+  void (*stop)(grpc_custom_timer* t);
+} grpc_custom_timer_vtable;
+
+void grpc_custom_timer_init(grpc_custom_timer_vtable* impl);
+
+void grpc_custom_timer_callback(grpc_custom_timer* t, grpc_error* error);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_CUSTOM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_generic.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_generic.cc
new file mode 100644
index 0000000..0f00eea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_generic.cc	
@@ -0,0 +1,748 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <inttypes.h>
+
+#include "src/core/lib/iomgr/timer.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/time_averaged_stats.h"
+#include "src/core/lib/iomgr/timer_heap.h"
+
+#define INVALID_HEAP_INDEX 0xffffffffu
+
+#define ADD_DEADLINE_SCALE 0.33
+#define MIN_QUEUE_WINDOW_DURATION 0.01
+#define MAX_QUEUE_WINDOW_DURATION 1
+
+grpc_core::TraceFlag grpc_timer_trace(false, "timer");
+grpc_core::TraceFlag grpc_timer_check_trace(false, "timer_check");
+
+/* A "timer shard". Contains a 'heap' and a 'list' of timers. All timers with
+ * deadlines earlier than 'queue_deadline_cap' are maintained in the heap and
+ * others are maintained in the list (unordered). This helps to keep the number
+ * of elements in the heap low.
+ *
+ * The 'queue_deadline_cap' gets recomputed periodically based on the timer
+ * stats maintained in 'stats' and the relevant timers are then moved from the
+ * 'list' to 'heap'.
+ */
+typedef struct {
+  gpr_mu mu;
+  grpc_time_averaged_stats stats;
+  /* All and only timers with deadlines < this will be in the heap. */
+  grpc_millis queue_deadline_cap;
+  /* The deadline of the next timer due in this shard. */
+  grpc_millis min_deadline;
+  /* Index of this timer_shard in the g_shard_queue. */
+  uint32_t shard_queue_index;
+  /* This holds all timers with deadlines < queue_deadline_cap. Timers in this
+     list have the top bit of their deadline set to 0. */
+  grpc_timer_heap heap;
+  /* This holds timers whose deadline is >= queue_deadline_cap. */
+  grpc_timer list;
+} timer_shard;
+
+static size_t g_num_shards;
+
+/* Array of timer shards. Whenever a timer (grpc_timer *) is added, its address
+ * is hashed to select the timer shard to add the timer to */
+static timer_shard* g_shards;
+
+/* Maintains a sorted list of timer shards (sorted by their min_deadline, i.e
+ * the deadline of the next timer in each shard).
+ * Access to this is protected by g_shared_mutables.mu */
+static timer_shard** g_shard_queue;
+
+#ifndef NDEBUG
+
+/* == DEBUG ONLY: hash table for duplicate timer detection == */
+
+#define NUM_HASH_BUCKETS 1009 /* Prime number close to 1000 */
+
+static gpr_mu g_hash_mu[NUM_HASH_BUCKETS]; /* One mutex per bucket */
+static grpc_timer* g_timer_ht[NUM_HASH_BUCKETS] = {nullptr};
+
+static void init_timer_ht() {
+  for (int i = 0; i < NUM_HASH_BUCKETS; i++) {
+    gpr_mu_init(&g_hash_mu[i]);
+  }
+}
+
+static void destroy_timer_ht() {
+  for (int i = 0; i < NUM_HASH_BUCKETS; i++) {
+    gpr_mu_destroy(&g_hash_mu[i]);
+  }
+}
+
+static bool is_in_ht(grpc_timer* t) {
+  size_t i = GPR_HASH_POINTER(t, NUM_HASH_BUCKETS);
+
+  gpr_mu_lock(&g_hash_mu[i]);
+  grpc_timer* p = g_timer_ht[i];
+  while (p != nullptr && p != t) {
+    p = p->hash_table_next;
+  }
+  gpr_mu_unlock(&g_hash_mu[i]);
+
+  return (p == t);
+}
+
+static void add_to_ht(grpc_timer* t) {
+  GPR_ASSERT(!t->hash_table_next);
+  size_t i = GPR_HASH_POINTER(t, NUM_HASH_BUCKETS);
+
+  gpr_mu_lock(&g_hash_mu[i]);
+  grpc_timer* p = g_timer_ht[i];
+  while (p != nullptr && p != t) {
+    p = p->hash_table_next;
+  }
+
+  if (p == t) {
+    grpc_closure* c = t->closure;
+    gpr_log(GPR_ERROR,
+            "** Duplicate timer (%p) being added. Closure: (%p), created at: "
+            "(%s:%d), scheduled at: (%s:%d) **",
+            t, c, c->file_created, c->line_created, c->file_initiated,
+            c->line_initiated);
+    abort();
+  }
+
+  /* Timer not present in the bucket. Insert at head of the list */
+  t->hash_table_next = g_timer_ht[i];
+  g_timer_ht[i] = t;
+  gpr_mu_unlock(&g_hash_mu[i]);
+}
+
+static void remove_from_ht(grpc_timer* t) {
+  size_t i = GPR_HASH_POINTER(t, NUM_HASH_BUCKETS);
+  bool removed = false;
+
+  gpr_mu_lock(&g_hash_mu[i]);
+  if (g_timer_ht[i] == t) {
+    g_timer_ht[i] = g_timer_ht[i]->hash_table_next;
+    removed = true;
+  } else if (g_timer_ht[i] != nullptr) {
+    grpc_timer* p = g_timer_ht[i];
+    while (p->hash_table_next != nullptr && p->hash_table_next != t) {
+      p = p->hash_table_next;
+    }
+
+    if (p->hash_table_next == t) {
+      p->hash_table_next = t->hash_table_next;
+      removed = true;
+    }
+  }
+  gpr_mu_unlock(&g_hash_mu[i]);
+
+  if (!removed) {
+    grpc_closure* c = t->closure;
+    gpr_log(GPR_ERROR,
+            "** Removing timer (%p) that is not added to hash table. Closure "
+            "(%p), created at: (%s:%d), scheduled at: (%s:%d) **",
+            t, c, c->file_created, c->line_created, c->file_initiated,
+            c->line_initiated);
+    abort();
+  }
+
+  t->hash_table_next = nullptr;
+}
+
+/* If a timer is added to a timer shard (either heap or a list), it must
+ * be pending. A timer is added to hash table only-if it is added to the
+ * timer shard.
+ * Therefore, if timer->pending is false, it cannot be in hash table */
+static void validate_non_pending_timer(grpc_timer* t) {
+  if (!t->pending && is_in_ht(t)) {
+    grpc_closure* c = t->closure;
+    gpr_log(GPR_ERROR,
+            "** gpr_timer_cancel() called on a non-pending timer (%p) which "
+            "is in the hash table. Closure: (%p), created at: (%s:%d), "
+            "scheduled at: (%s:%d) **",
+            t, c, c->file_created, c->line_created, c->file_initiated,
+            c->line_initiated);
+    abort();
+  }
+}
+
+#define INIT_TIMER_HASH_TABLE() init_timer_ht()
+#define DESTROY_TIMER_HASH_TABLE() destroy_timer_ht()
+#define ADD_TO_HASH_TABLE(t) add_to_ht((t))
+#define REMOVE_FROM_HASH_TABLE(t) remove_from_ht((t))
+#define VALIDATE_NON_PENDING_TIMER(t) validate_non_pending_timer((t))
+
+#else
+
+#define INIT_TIMER_HASH_TABLE()
+#define DESTROY_TIMER_HASH_TABLE()
+#define ADD_TO_HASH_TABLE(t)
+#define REMOVE_FROM_HASH_TABLE(t)
+#define VALIDATE_NON_PENDING_TIMER(t)
+
+#endif
+
+#if GPR_ARCH_64
+/* NOTE: TODO(sreek) - Currently the thread local storage support in grpc is
+   for intptr_t which means on 32-bit machines it is not wide enough to hold
+   grpc_millis which is 64-bit. Adding thread local support for 64 bit values
+   is a lot of work for very little gain. So we are currently restricting this
+   optimization to only 64 bit machines */
+
+/* Thread local variable that stores the deadline of the next timer the thread
+ * has last-seen. This is an optimization to prevent the thread from checking
+ * shared_mutables.min_timer (which requires acquiring shared_mutables.mu lock,
+ * an expensive operation) */
+GPR_TLS_DECL(g_last_seen_min_timer);
+#endif
+
+struct shared_mutables {
+  /* The deadline of the next timer due across all timer shards */
+  grpc_millis min_timer;
+  /* Allow only one run_some_expired_timers at once */
+  gpr_spinlock checker_mu;
+  bool initialized;
+  /* Protects g_shard_queue (and the shared_mutables struct itself) */
+  gpr_mu mu;
+} GPR_ALIGN_STRUCT(GPR_CACHELINE_SIZE);
+
+static struct shared_mutables g_shared_mutables;
+
+static grpc_millis saturating_add(grpc_millis a, grpc_millis b) {
+  if (a > GRPC_MILLIS_INF_FUTURE - b) {
+    return GRPC_MILLIS_INF_FUTURE;
+  }
+  return a + b;
+}
+
+static grpc_timer_check_result run_some_expired_timers(grpc_millis now,
+                                                       grpc_millis* next,
+                                                       grpc_error* error);
+
+static grpc_millis compute_min_deadline(timer_shard* shard) {
+  return grpc_timer_heap_is_empty(&shard->heap)
+             ? saturating_add(shard->queue_deadline_cap, 1)
+             : grpc_timer_heap_top(&shard->heap)->deadline;
+}
+
+static void timer_list_init() {
+  uint32_t i;
+
+  g_num_shards = GPR_CLAMP(2 * gpr_cpu_num_cores(), 1, 32);
+  g_shards =
+      static_cast<timer_shard*>(gpr_zalloc(g_num_shards * sizeof(*g_shards)));
+  g_shard_queue = static_cast<timer_shard**>(
+      gpr_zalloc(g_num_shards * sizeof(*g_shard_queue)));
+
+  g_shared_mutables.initialized = true;
+  g_shared_mutables.checker_mu = GPR_SPINLOCK_INITIALIZER;
+  gpr_mu_init(&g_shared_mutables.mu);
+  g_shared_mutables.min_timer = grpc_core::ExecCtx::Get()->Now();
+
+#if GPR_ARCH_64
+  gpr_tls_init(&g_last_seen_min_timer);
+  gpr_tls_set(&g_last_seen_min_timer, 0);
+#endif
+
+  for (i = 0; i < g_num_shards; i++) {
+    timer_shard* shard = &g_shards[i];
+    gpr_mu_init(&shard->mu);
+    grpc_time_averaged_stats_init(&shard->stats, 1.0 / ADD_DEADLINE_SCALE, 0.1,
+                                  0.5);
+    shard->queue_deadline_cap = g_shared_mutables.min_timer;
+    shard->shard_queue_index = i;
+    grpc_timer_heap_init(&shard->heap);
+    shard->list.next = shard->list.prev = &shard->list;
+    shard->min_deadline = compute_min_deadline(shard);
+    g_shard_queue[i] = shard;
+  }
+
+  INIT_TIMER_HASH_TABLE();
+}
+
+static void timer_list_shutdown() {
+  size_t i;
+  run_some_expired_timers(
+      GRPC_MILLIS_INF_FUTURE, nullptr,
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Timer list shutdown"));
+  for (i = 0; i < g_num_shards; i++) {
+    timer_shard* shard = &g_shards[i];
+    gpr_mu_destroy(&shard->mu);
+    grpc_timer_heap_destroy(&shard->heap);
+  }
+  gpr_mu_destroy(&g_shared_mutables.mu);
+
+#if GPR_ARCH_64
+  gpr_tls_destroy(&g_last_seen_min_timer);
+#endif
+
+  gpr_free(g_shards);
+  gpr_free(g_shard_queue);
+  g_shared_mutables.initialized = false;
+
+  DESTROY_TIMER_HASH_TABLE();
+}
+
+/* returns true if the first element in the list */
+static void list_join(grpc_timer* head, grpc_timer* timer) {
+  timer->next = head;
+  timer->prev = head->prev;
+  timer->next->prev = timer->prev->next = timer;
+}
+
+static void list_remove(grpc_timer* timer) {
+  timer->next->prev = timer->prev;
+  timer->prev->next = timer->next;
+}
+
+static void swap_adjacent_shards_in_queue(uint32_t first_shard_queue_index) {
+  timer_shard* temp;
+  temp = g_shard_queue[first_shard_queue_index];
+  g_shard_queue[first_shard_queue_index] =
+      g_shard_queue[first_shard_queue_index + 1];
+  g_shard_queue[first_shard_queue_index + 1] = temp;
+  g_shard_queue[first_shard_queue_index]->shard_queue_index =
+      first_shard_queue_index;
+  g_shard_queue[first_shard_queue_index + 1]->shard_queue_index =
+      first_shard_queue_index + 1;
+}
+
+static void note_deadline_change(timer_shard* shard) {
+  while (shard->shard_queue_index > 0 &&
+         shard->min_deadline <
+             g_shard_queue[shard->shard_queue_index - 1]->min_deadline) {
+    swap_adjacent_shards_in_queue(shard->shard_queue_index - 1);
+  }
+  while (shard->shard_queue_index < g_num_shards - 1 &&
+         shard->min_deadline >
+             g_shard_queue[shard->shard_queue_index + 1]->min_deadline) {
+    swap_adjacent_shards_in_queue(shard->shard_queue_index);
+  }
+}
+
+void grpc_timer_init_unset(grpc_timer* timer) { timer->pending = false; }
+
+static void timer_init(grpc_timer* timer, grpc_millis deadline,
+                       grpc_closure* closure) {
+  int is_first_timer = 0;
+  timer_shard* shard = &g_shards[GPR_HASH_POINTER(timer, g_num_shards)];
+  timer->closure = closure;
+  timer->deadline = deadline;
+
+#ifndef NDEBUG
+  timer->hash_table_next = nullptr;
+#endif
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_trace)) {
+    gpr_log(GPR_INFO, "TIMER %p: SET %" PRId64 " now %" PRId64 " call %p[%p]",
+            timer, deadline, grpc_core::ExecCtx::Get()->Now(), closure,
+            closure->cb);
+  }
+
+  if (!g_shared_mutables.initialized) {
+    timer->pending = false;
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, timer->closure,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "Attempt to create timer before initialization"));
+    return;
+  }
+
+  gpr_mu_lock(&shard->mu);
+  timer->pending = true;
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+  if (deadline <= now) {
+    timer->pending = false;
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, timer->closure, GRPC_ERROR_NONE);
+    gpr_mu_unlock(&shard->mu);
+    /* early out */
+    return;
+  }
+
+  grpc_time_averaged_stats_add_sample(
+      &shard->stats, static_cast<double>(deadline - now) / 1000.0);
+
+  ADD_TO_HASH_TABLE(timer);
+
+  if (deadline < shard->queue_deadline_cap) {
+    is_first_timer = grpc_timer_heap_add(&shard->heap, timer);
+  } else {
+    timer->heap_index = INVALID_HEAP_INDEX;
+    list_join(&shard->list, timer);
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_trace)) {
+    gpr_log(GPR_INFO,
+            "  .. add to shard %d with queue_deadline_cap=%" PRId64
+            " => is_first_timer=%s",
+            static_cast<int>(shard - g_shards), shard->queue_deadline_cap,
+            is_first_timer ? "true" : "false");
+  }
+  gpr_mu_unlock(&shard->mu);
+
+  /* Deadline may have decreased, we need to adjust the master queue.  Note
+     that there is a potential racy unlocked region here.  There could be a
+     reordering of multiple grpc_timer_init calls, at this point, but the < test
+     below should ensure that we err on the side of caution.  There could
+     also be a race with grpc_timer_check, which might beat us to the lock.  In
+     that case, it is possible that the timer that we added will have already
+     run by the time we hold the lock, but that too is a safe error.
+     Finally, it's possible that the grpc_timer_check that intervened failed to
+     trigger the new timer because the min_deadline hadn't yet been reduced.
+     In that case, the timer will simply have to wait for the next
+     grpc_timer_check. */
+  if (is_first_timer) {
+    gpr_mu_lock(&g_shared_mutables.mu);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_trace)) {
+      gpr_log(GPR_INFO, "  .. old shard min_deadline=%" PRId64,
+              shard->min_deadline);
+    }
+    if (deadline < shard->min_deadline) {
+      grpc_millis old_min_deadline = g_shard_queue[0]->min_deadline;
+      shard->min_deadline = deadline;
+      note_deadline_change(shard);
+      if (shard->shard_queue_index == 0 && deadline < old_min_deadline) {
+#if GPR_ARCH_64
+        // TODO: sreek - Using c-style cast here. static_cast<> gives an error
+        // (on mac platforms complaining that gpr_atm* is (long *) while
+        // (&g_shared_mutables.min_timer) is a (long long *). The cast should be
+        // safe since we know that both are pointer types and 64-bit wide.
+        gpr_atm_no_barrier_store((gpr_atm*)(&g_shared_mutables.min_timer),
+                                 deadline);
+#else
+        // On 32-bit systems, gpr_atm_no_barrier_store does not work on 64-bit
+        // types (like grpc_millis). So all reads and writes to
+        // g_shared_mutables.min_timer varialbe under g_shared_mutables.mu
+        g_shared_mutables.min_timer = deadline;
+#endif
+        grpc_kick_poller();
+      }
+    }
+    gpr_mu_unlock(&g_shared_mutables.mu);
+  }
+}
+
+static void timer_consume_kick(void) {
+#if GPR_ARCH_64
+  /* Force re-evaluation of last seen min */
+  gpr_tls_set(&g_last_seen_min_timer, 0);
+#endif
+}
+
+static void timer_cancel(grpc_timer* timer) {
+  if (!g_shared_mutables.initialized) {
+    /* must have already been cancelled, also the shard mutex is invalid */
+    return;
+  }
+
+  timer_shard* shard = &g_shards[GPR_HASH_POINTER(timer, g_num_shards)];
+  gpr_mu_lock(&shard->mu);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_trace)) {
+    gpr_log(GPR_INFO, "TIMER %p: CANCEL pending=%s", timer,
+            timer->pending ? "true" : "false");
+  }
+
+  if (timer->pending) {
+    REMOVE_FROM_HASH_TABLE(timer);
+
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, timer->closure,
+                            GRPC_ERROR_CANCELLED);
+    timer->pending = false;
+    if (timer->heap_index == INVALID_HEAP_INDEX) {
+      list_remove(timer);
+    } else {
+      grpc_timer_heap_remove(&shard->heap, timer);
+    }
+  } else {
+    VALIDATE_NON_PENDING_TIMER(timer);
+  }
+  gpr_mu_unlock(&shard->mu);
+}
+
+/* Rebalances the timer shard by computing a new 'queue_deadline_cap' and moving
+   all relevant timers in shard->list (i.e timers with deadlines earlier than
+   'queue_deadline_cap') into into shard->heap.
+   Returns 'true' if shard->heap has at least ONE element
+   REQUIRES: shard->mu locked */
+static bool refill_heap(timer_shard* shard, grpc_millis now) {
+  /* Compute the new queue window width and bound by the limits: */
+  double computed_deadline_delta =
+      grpc_time_averaged_stats_update_average(&shard->stats) *
+      ADD_DEADLINE_SCALE;
+  double deadline_delta =
+      GPR_CLAMP(computed_deadline_delta, MIN_QUEUE_WINDOW_DURATION,
+                MAX_QUEUE_WINDOW_DURATION);
+  grpc_timer *timer, *next;
+
+  /* Compute the new cap and put all timers under it into the queue: */
+  shard->queue_deadline_cap =
+      saturating_add(GPR_MAX(now, shard->queue_deadline_cap),
+                     static_cast<grpc_millis>(deadline_delta * 1000.0));
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "  .. shard[%d]->queue_deadline_cap --> %" PRId64,
+            static_cast<int>(shard - g_shards), shard->queue_deadline_cap);
+  }
+  for (timer = shard->list.next; timer != &shard->list; timer = next) {
+    next = timer->next;
+
+    if (timer->deadline < shard->queue_deadline_cap) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+        gpr_log(GPR_INFO, "  .. add timer with deadline %" PRId64 " to heap",
+                timer->deadline);
+      }
+      list_remove(timer);
+      grpc_timer_heap_add(&shard->heap, timer);
+    }
+  }
+  return !grpc_timer_heap_is_empty(&shard->heap);
+}
+
+/* This pops the next non-cancelled timer with deadline <= now from the
+   queue, or returns NULL if there isn't one.
+   REQUIRES: shard->mu locked */
+static grpc_timer* pop_one(timer_shard* shard, grpc_millis now) {
+  grpc_timer* timer;
+  for (;;) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO, "  .. shard[%d]: heap_empty=%s",
+              static_cast<int>(shard - g_shards),
+              grpc_timer_heap_is_empty(&shard->heap) ? "true" : "false");
+    }
+    if (grpc_timer_heap_is_empty(&shard->heap)) {
+      if (now < shard->queue_deadline_cap) return nullptr;
+      if (!refill_heap(shard, now)) return nullptr;
+    }
+    timer = grpc_timer_heap_top(&shard->heap);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO,
+              "  .. check top timer deadline=%" PRId64 " now=%" PRId64,
+              timer->deadline, now);
+    }
+    if (timer->deadline > now) return nullptr;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_trace)) {
+      gpr_log(GPR_INFO, "TIMER %p: FIRE %" PRId64 "ms late", timer,
+              now - timer->deadline);
+    }
+    timer->pending = false;
+    grpc_timer_heap_pop(&shard->heap);
+    return timer;
+  }
+}
+
+/* REQUIRES: shard->mu unlocked */
+static size_t pop_timers(timer_shard* shard, grpc_millis now,
+                         grpc_millis* new_min_deadline, grpc_error* error) {
+  size_t n = 0;
+  grpc_timer* timer;
+  gpr_mu_lock(&shard->mu);
+  while ((timer = pop_one(shard, now))) {
+    REMOVE_FROM_HASH_TABLE(timer);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, timer->closure,
+                            GRPC_ERROR_REF(error));
+    n++;
+  }
+  *new_min_deadline = compute_min_deadline(shard);
+  gpr_mu_unlock(&shard->mu);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "  .. shard[%d] popped %" PRIdPTR,
+            static_cast<int>(shard - g_shards), n);
+  }
+  return n;
+}
+
+static grpc_timer_check_result run_some_expired_timers(grpc_millis now,
+                                                       grpc_millis* next,
+                                                       grpc_error* error) {
+  grpc_timer_check_result result = GRPC_TIMERS_NOT_CHECKED;
+
+#if GPR_ARCH_64
+  // TODO: sreek - Using c-style cast here. static_cast<> gives an error (on
+  // mac platforms complaining that gpr_atm* is (long *) while
+  // (&g_shared_mutables.min_timer) is a (long long *). The cast should be
+  // safe since we know that both are pointer types and 64-bit wide
+  grpc_millis min_timer = static_cast<grpc_millis>(
+      gpr_atm_no_barrier_load((gpr_atm*)(&g_shared_mutables.min_timer)));
+  gpr_tls_set(&g_last_seen_min_timer, min_timer);
+#else
+  // On 32-bit systems, gpr_atm_no_barrier_load does not work on 64-bit types
+  // (like grpc_millis). So all reads and writes to g_shared_mutables.min_timer
+  // are done under g_shared_mutables.mu
+  gpr_mu_lock(&g_shared_mutables.mu);
+  grpc_millis min_timer = g_shared_mutables.min_timer;
+  gpr_mu_unlock(&g_shared_mutables.mu);
+#endif
+  if (now < min_timer) {
+    if (next != nullptr) *next = GPR_MIN(*next, min_timer);
+    return GRPC_TIMERS_CHECKED_AND_EMPTY;
+  }
+
+  if (gpr_spinlock_trylock(&g_shared_mutables.checker_mu)) {
+    gpr_mu_lock(&g_shared_mutables.mu);
+    result = GRPC_TIMERS_CHECKED_AND_EMPTY;
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO, "  .. shard[%d]->min_deadline = %" PRId64,
+              static_cast<int>(g_shard_queue[0] - g_shards),
+              g_shard_queue[0]->min_deadline);
+    }
+
+    while (g_shard_queue[0]->min_deadline < now ||
+           (now != GRPC_MILLIS_INF_FUTURE &&
+            g_shard_queue[0]->min_deadline == now)) {
+      grpc_millis new_min_deadline;
+
+      /* For efficiency, we pop as many available timers as we can from the
+         shard.  This may violate perfect timer deadline ordering, but that
+         shouldn't be a big deal because we don't make ordering guarantees. */
+      if (pop_timers(g_shard_queue[0], now, &new_min_deadline, error) > 0) {
+        result = GRPC_TIMERS_FIRED;
+      }
+
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+        gpr_log(GPR_INFO,
+                "  .. result --> %d"
+                ", shard[%d]->min_deadline %" PRId64 " --> %" PRId64
+                ", now=%" PRId64,
+                result, static_cast<int>(g_shard_queue[0] - g_shards),
+                g_shard_queue[0]->min_deadline, new_min_deadline, now);
+      }
+
+      /* An grpc_timer_init() on the shard could intervene here, adding a new
+         timer that is earlier than new_min_deadline.  However,
+         grpc_timer_init() will block on the master_lock before it can call
+         set_min_deadline, so this one will complete first and then the Addtimer
+         will reduce the min_deadline (perhaps unnecessarily). */
+      g_shard_queue[0]->min_deadline = new_min_deadline;
+      note_deadline_change(g_shard_queue[0]);
+    }
+
+    if (next) {
+      *next = GPR_MIN(*next, g_shard_queue[0]->min_deadline);
+    }
+
+#if GPR_ARCH_64
+    // TODO: sreek - Using c-style cast here. static_cast<> gives an error (on
+    // mac platforms complaining that gpr_atm* is (long *) while
+    // (&g_shared_mutables.min_timer) is a (long long *). The cast should be
+    // safe since we know that both are pointer types and 64-bit wide
+    gpr_atm_no_barrier_store((gpr_atm*)(&g_shared_mutables.min_timer),
+                             g_shard_queue[0]->min_deadline);
+#else
+    // On 32-bit systems, gpr_atm_no_barrier_store does not work on 64-bit
+    // types (like grpc_millis). So all reads and writes to
+    // g_shared_mutables.min_timer are done under g_shared_mutables.mu
+    g_shared_mutables.min_timer = g_shard_queue[0]->min_deadline;
+#endif
+    gpr_mu_unlock(&g_shared_mutables.mu);
+    gpr_spinlock_unlock(&g_shared_mutables.checker_mu);
+  }
+
+  GRPC_ERROR_UNREF(error);
+
+  return result;
+}
+
+static grpc_timer_check_result timer_check(grpc_millis* next) {
+  // prelude
+  grpc_millis now = grpc_core::ExecCtx::Get()->Now();
+
+#if GPR_ARCH_64
+  /* fetch from a thread-local first: this avoids contention on a globally
+     mutable cacheline in the common case */
+  grpc_millis min_timer = gpr_tls_get(&g_last_seen_min_timer);
+#else
+  // On 32-bit systems, we currently do not have thread local support for 64-bit
+  // types. In this case, directly read from g_shared_mutables.min_timer.
+  // Also, note that on 32-bit systems, gpr_atm_no_barrier_store does not work
+  // on 64-bit types (like grpc_millis). So all reads and writes to
+  // g_shared_mutables.min_timer are done under g_shared_mutables.mu
+  gpr_mu_lock(&g_shared_mutables.mu);
+  grpc_millis min_timer = g_shared_mutables.min_timer;
+  gpr_mu_unlock(&g_shared_mutables.mu);
+#endif
+
+  if (now < min_timer) {
+    if (next != nullptr) {
+      *next = GPR_MIN(*next, min_timer);
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO, "TIMER CHECK SKIP: now=%" PRId64 " min_timer=%" PRId64,
+              now, min_timer);
+    }
+    return GRPC_TIMERS_CHECKED_AND_EMPTY;
+  }
+
+  grpc_error* shutdown_error =
+      now != GRPC_MILLIS_INF_FUTURE
+          ? GRPC_ERROR_NONE
+          : GRPC_ERROR_CREATE_FROM_STATIC_STRING("Shutting down timer system");
+
+  // tracing
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    char* next_str;
+    if (next == nullptr) {
+      next_str = gpr_strdup("NULL");
+    } else {
+      gpr_asprintf(&next_str, "%" PRId64, *next);
+    }
+#if GPR_ARCH_64
+    gpr_log(GPR_INFO,
+            "TIMER CHECK BEGIN: now=%" PRId64 " next=%s tls_min=%" PRId64
+            " glob_min=%" PRId64,
+            now, next_str, min_timer,
+            static_cast<grpc_millis>(gpr_atm_no_barrier_load(
+                (gpr_atm*)(&g_shared_mutables.min_timer))));
+#else
+    gpr_log(GPR_INFO, "TIMER CHECK BEGIN: now=%" PRId64 " next=%s min=%" PRId64,
+            now, next_str, min_timer);
+#endif
+    gpr_free(next_str);
+  }
+  // actual code
+  grpc_timer_check_result r =
+      run_some_expired_timers(now, next, shutdown_error);
+  // tracing
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    char* next_str;
+    if (next == nullptr) {
+      next_str = gpr_strdup("NULL");
+    } else {
+      gpr_asprintf(&next_str, "%" PRId64, *next);
+    }
+    gpr_log(GPR_INFO, "TIMER CHECK END: r=%d; next=%s", r, next_str);
+    gpr_free(next_str);
+  }
+  return r;
+}
+
+grpc_timer_vtable grpc_generic_timer_vtable = {
+    timer_init,      timer_cancel,        timer_check,
+    timer_list_init, timer_list_shutdown, timer_consume_kick};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.cc
new file mode 100644
index 0000000..2c6a599
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.cc	
@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include "src/core/lib/iomgr/timer_heap.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+/* Adjusts a heap so as to move a hole at position i closer to the root,
+   until a suitable position is found for element t. Then, copies t into that
+   position. This functor is called each time immediately after modifying a
+   value in the underlying container, with the offset of the modified element as
+   its argument. */
+static void adjust_upwards(grpc_timer** first, uint32_t i, grpc_timer* t) {
+  while (i > 0) {
+    uint32_t parent = static_cast<uint32_t>((static_cast<int>(i) - 1) / 2);
+    if (first[parent]->deadline <= t->deadline) break;
+    first[i] = first[parent];
+    first[i]->heap_index = i;
+    i = parent;
+  }
+  first[i] = t;
+  t->heap_index = i;
+}
+
+/* Adjusts a heap so as to move a hole at position i farther away from the root,
+   until a suitable position is found for element t.  Then, copies t into that
+   position. */
+static void adjust_downwards(grpc_timer** first, uint32_t i, uint32_t length,
+                             grpc_timer* t) {
+  for (;;) {
+    uint32_t left_child = 1u + 2u * i;
+    if (left_child >= length) break;
+    uint32_t right_child = left_child + 1;
+    uint32_t next_i = right_child < length && first[left_child]->deadline >
+                                                  first[right_child]->deadline
+                          ? right_child
+                          : left_child;
+    if (t->deadline <= first[next_i]->deadline) break;
+    first[i] = first[next_i];
+    first[i]->heap_index = i;
+    i = next_i;
+  }
+  first[i] = t;
+  t->heap_index = i;
+}
+
+#define SHRINK_MIN_ELEMS 8
+#define SHRINK_FULLNESS_FACTOR 2
+
+static void maybe_shrink(grpc_timer_heap* heap) {
+  if (heap->timer_count >= 8 &&
+      heap->timer_count <= heap->timer_capacity / SHRINK_FULLNESS_FACTOR / 2) {
+    heap->timer_capacity = heap->timer_count * SHRINK_FULLNESS_FACTOR;
+    heap->timers = static_cast<grpc_timer**>(
+        gpr_realloc(heap->timers, heap->timer_capacity * sizeof(grpc_timer*)));
+  }
+}
+
+static void note_changed_priority(grpc_timer_heap* heap, grpc_timer* timer) {
+  uint32_t i = timer->heap_index;
+  uint32_t parent = static_cast<uint32_t>((static_cast<int>(i) - 1) / 2);
+  if (heap->timers[parent]->deadline > timer->deadline) {
+    adjust_upwards(heap->timers, i, timer);
+  } else {
+    adjust_downwards(heap->timers, i, heap->timer_count, timer);
+  }
+}
+
+void grpc_timer_heap_init(grpc_timer_heap* heap) {
+  memset(heap, 0, sizeof(*heap));
+}
+
+void grpc_timer_heap_destroy(grpc_timer_heap* heap) { gpr_free(heap->timers); }
+
+bool grpc_timer_heap_add(grpc_timer_heap* heap, grpc_timer* timer) {
+  if (heap->timer_count == heap->timer_capacity) {
+    heap->timer_capacity =
+        GPR_MAX(heap->timer_capacity + 1, heap->timer_capacity * 3 / 2);
+    heap->timers = static_cast<grpc_timer**>(
+        gpr_realloc(heap->timers, heap->timer_capacity * sizeof(grpc_timer*)));
+  }
+  timer->heap_index = heap->timer_count;
+  adjust_upwards(heap->timers, heap->timer_count, timer);
+  heap->timer_count++;
+  return timer->heap_index == 0;
+}
+
+void grpc_timer_heap_remove(grpc_timer_heap* heap, grpc_timer* timer) {
+  uint32_t i = timer->heap_index;
+  if (i == heap->timer_count - 1) {
+    heap->timer_count--;
+    maybe_shrink(heap);
+    return;
+  }
+  heap->timers[i] = heap->timers[heap->timer_count - 1];
+  heap->timers[i]->heap_index = i;
+  heap->timer_count--;
+  maybe_shrink(heap);
+  note_changed_priority(heap, heap->timers[i]);
+}
+
+bool grpc_timer_heap_is_empty(grpc_timer_heap* heap) {
+  return heap->timer_count == 0;
+}
+
+grpc_timer* grpc_timer_heap_top(grpc_timer_heap* heap) {
+  return heap->timers[0];
+}
+
+void grpc_timer_heap_pop(grpc_timer_heap* heap) {
+  grpc_timer_heap_remove(heap, grpc_timer_heap_top(heap));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.h
new file mode 100644
index 0000000..7b983e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_heap.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer.h"
+
+typedef struct {
+  grpc_timer** timers;
+  uint32_t timer_count;
+  uint32_t timer_capacity;
+} grpc_timer_heap;
+
+/* return true if the new timer is the first timer in the heap */
+bool grpc_timer_heap_add(grpc_timer_heap* heap, grpc_timer* timer);
+
+void grpc_timer_heap_init(grpc_timer_heap* heap);
+void grpc_timer_heap_destroy(grpc_timer_heap* heap);
+
+void grpc_timer_heap_remove(grpc_timer_heap* heap, grpc_timer* timer);
+grpc_timer* grpc_timer_heap_top(grpc_timer_heap* heap);
+void grpc_timer_heap_pop(grpc_timer_heap* heap);
+
+bool grpc_timer_heap_is_empty(grpc_timer_heap* heap);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.cc
new file mode 100644
index 0000000..96d502c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.cc	
@@ -0,0 +1,363 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/timer_manager.h"
+
+#include <inttypes.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/timer.h"
+
+struct completed_thread {
+  grpc_core::Thread thd;
+  completed_thread* next;
+};
+
+extern grpc_core::TraceFlag grpc_timer_check_trace;
+
+// global mutex
+static gpr_mu g_mu;
+// are we multi-threaded
+static bool g_threaded;
+// cv to wait until a thread is needed
+static gpr_cv g_cv_wait;
+// cv for notification when threading ends
+static gpr_cv g_cv_shutdown;
+// number of threads in the system
+static int g_thread_count;
+// number of threads sitting around waiting
+static int g_waiter_count;
+// linked list of threads that have completed (and need joining)
+static completed_thread* g_completed_threads;
+// was the manager kicked by the timer system
+static bool g_kicked;
+// is there a thread waiting until the next timer should fire?
+static bool g_has_timed_waiter;
+// the deadline of the current timed waiter thread (only relevant if
+// g_has_timed_waiter is true)
+static grpc_millis g_timed_waiter_deadline;
+// generation counter to track which thread is waiting for the next timer
+static uint64_t g_timed_waiter_generation;
+// number of timer wakeups
+static uint64_t g_wakeups;
+
+static void timer_thread(void* completed_thread_ptr);
+
+static void gc_completed_threads(void) {
+  if (g_completed_threads != nullptr) {
+    completed_thread* to_gc = g_completed_threads;
+    g_completed_threads = nullptr;
+    gpr_mu_unlock(&g_mu);
+    while (to_gc != nullptr) {
+      to_gc->thd.Join();
+      completed_thread* next = to_gc->next;
+      gpr_free(to_gc);
+      to_gc = next;
+    }
+    gpr_mu_lock(&g_mu);
+  }
+}
+
+static void start_timer_thread_and_unlock(void) {
+  GPR_ASSERT(g_threaded);
+  ++g_waiter_count;
+  ++g_thread_count;
+  gpr_mu_unlock(&g_mu);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "Spawn timer thread");
+  }
+  completed_thread* ct =
+      static_cast<completed_thread*>(gpr_malloc(sizeof(*ct)));
+  ct->thd = grpc_core::Thread("grpc_global_timer", timer_thread, ct);
+  ct->thd.Start();
+}
+
+void grpc_timer_manager_tick() {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_timer_check(nullptr);
+}
+
+static void run_some_timers() {
+  // In the case of timers, the ExecCtx for the thread is declared
+  // in the timer thread itself, but this is the point where we
+  // could start seeing application-level callbacks. No need to
+  // create a new ExecCtx, though, since there already is one and it is
+  // flushed (but not destructed) in this function itself
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx(
+      GRPC_APP_CALLBACK_EXEC_CTX_FLAG_IS_INTERNAL_THREAD);
+
+  // if there's something to execute...
+  gpr_mu_lock(&g_mu);
+  // remove a waiter from the pool, and start another thread if necessary
+  --g_waiter_count;
+  if (g_waiter_count == 0 && g_threaded) {
+    // The number of timer threads is always increasing until all the threads
+    // are stopped. In rare cases, if a large number of timers fire
+    // simultaneously, we may end up using a large number of threads.
+    start_timer_thread_and_unlock();
+  } else {
+    // if there's no thread waiting with a timeout, kick an existing untimed
+    // waiter so that the next deadline is not missed
+    if (!g_has_timed_waiter) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+        gpr_log(GPR_INFO, "kick untimed waiter");
+      }
+      gpr_cv_signal(&g_cv_wait);
+    }
+    gpr_mu_unlock(&g_mu);
+  }
+  // without our lock, flush the exec_ctx
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "flush exec_ctx");
+  }
+  grpc_core::ExecCtx::Get()->Flush();
+  gpr_mu_lock(&g_mu);
+  // garbage collect any threads hanging out that are dead
+  gc_completed_threads();
+  // get ready to wait again
+  ++g_waiter_count;
+  gpr_mu_unlock(&g_mu);
+}
+
+// wait until 'next' (or forever if there is already a timed waiter in the pool)
+// returns true if the thread should continue executing (false if it should
+// shutdown)
+static bool wait_until(grpc_millis next) {
+  gpr_mu_lock(&g_mu);
+  // if we're not threaded anymore, leave
+  if (!g_threaded) {
+    gpr_mu_unlock(&g_mu);
+    return false;
+  }
+
+  // If g_kicked is true at this point, it means there was a kick from the timer
+  // system that the timer-manager threads here missed. We cannot trust 'next'
+  // here any longer (since there might be an earlier deadline). So if g_kicked
+  // is true at this point, we should quickly exit this and get the next
+  // deadline from the timer system
+
+  if (!g_kicked) {
+    // if there's no timed waiter, we should become one: that waiter waits
+    // only until the next timer should expire. All other timers wait forever
+    //
+    // 'g_timed_waiter_generation' is a global generation counter. The idea here
+    // is that the thread becoming a timed-waiter increments and stores this
+    // global counter locally in 'my_timed_waiter_generation' before going to
+    // sleep. After waking up, if my_timed_waiter_generation ==
+    // g_timed_waiter_generation, it can be sure that it was the timed_waiter
+    // thread (and that no other thread took over while this was asleep)
+    //
+    // Initialize my_timed_waiter_generation to some value that is NOT equal to
+    // g_timed_waiter_generation
+    uint64_t my_timed_waiter_generation = g_timed_waiter_generation - 1;
+
+    /* If there's no timed waiter, we should become one: that waiter waits only
+       until the next timer should expire. All other timer threads wait forever
+       unless their 'next' is earlier than the current timed-waiter's deadline
+       (in which case the thread with earlier 'next' takes over as the new timed
+       waiter) */
+    if (next != GRPC_MILLIS_INF_FUTURE) {
+      if (!g_has_timed_waiter || (next < g_timed_waiter_deadline)) {
+        my_timed_waiter_generation = ++g_timed_waiter_generation;
+        g_has_timed_waiter = true;
+        g_timed_waiter_deadline = next;
+
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+          grpc_millis wait_time = next - grpc_core::ExecCtx::Get()->Now();
+          gpr_log(GPR_INFO, "sleep for a %" PRId64 " milliseconds", wait_time);
+        }
+      } else {  // g_timed_waiter == true && next >= g_timed_waiter_deadline
+        next = GRPC_MILLIS_INF_FUTURE;
+      }
+    }
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace) &&
+        next == GRPC_MILLIS_INF_FUTURE) {
+      gpr_log(GPR_INFO, "sleep until kicked");
+    }
+
+    gpr_cv_wait(&g_cv_wait, &g_mu,
+                grpc_millis_to_timespec(next, GPR_CLOCK_MONOTONIC));
+
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO, "wait ended: was_timed:%d kicked:%d",
+              my_timed_waiter_generation == g_timed_waiter_generation,
+              g_kicked);
+    }
+    // if this was the timed waiter, then we need to check timers, and flag
+    // that there's now no timed waiter... we'll look for a replacement if
+    // there's work to do after checking timers (code above)
+    if (my_timed_waiter_generation == g_timed_waiter_generation) {
+      ++g_wakeups;
+      g_has_timed_waiter = false;
+      g_timed_waiter_deadline = GRPC_MILLIS_INF_FUTURE;
+    }
+  }
+
+  // if this was a kick from the timer system, consume it (and don't stop
+  // this thread yet)
+  if (g_kicked) {
+    grpc_timer_consume_kick();
+    g_kicked = false;
+  }
+
+  gpr_mu_unlock(&g_mu);
+  return true;
+}
+
+static void timer_main_loop() {
+  for (;;) {
+    grpc_millis next = GRPC_MILLIS_INF_FUTURE;
+    grpc_core::ExecCtx::Get()->InvalidateNow();
+
+    // check timer state, updates next to the next time to run a check
+    switch (grpc_timer_check(&next)) {
+      case GRPC_TIMERS_FIRED:
+        run_some_timers();
+        break;
+      case GRPC_TIMERS_NOT_CHECKED:
+        /* This case only happens under contention, meaning more than one timer
+           manager thread checked timers concurrently.
+
+           If that happens, we're guaranteed that some other thread has just
+           checked timers, and this will avalanche into some other thread seeing
+           empty timers and doing a timed sleep.
+
+           Consequently, we can just sleep forever here and be happy at some
+           saved wakeup cycles. */
+        if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+          gpr_log(GPR_INFO, "timers not checked: expect another thread to");
+        }
+        next = GRPC_MILLIS_INF_FUTURE;
+      // fallthrough
+      case GRPC_TIMERS_CHECKED_AND_EMPTY:
+        if (!wait_until(next)) {
+          return;
+        }
+        break;
+    }
+  }
+}
+
+static void timer_thread_cleanup(completed_thread* ct) {
+  gpr_mu_lock(&g_mu);
+  // terminate the thread: drop the waiter count, thread count, and let whomever
+  // stopped the threading stuff know that we're done
+  --g_waiter_count;
+  --g_thread_count;
+  if (0 == g_thread_count) {
+    gpr_cv_signal(&g_cv_shutdown);
+  }
+  ct->next = g_completed_threads;
+  g_completed_threads = ct;
+  gpr_mu_unlock(&g_mu);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "End timer thread");
+  }
+}
+
+static void timer_thread(void* completed_thread_ptr) {
+  // this threads exec_ctx: we try to run things through to completion here
+  // since it's easy to spin up new threads
+  grpc_core::ExecCtx exec_ctx(GRPC_EXEC_CTX_FLAG_IS_INTERNAL_THREAD);
+  timer_main_loop();
+
+  timer_thread_cleanup(static_cast<completed_thread*>(completed_thread_ptr));
+}
+
+static void start_threads(void) {
+  gpr_mu_lock(&g_mu);
+  if (!g_threaded) {
+    g_threaded = true;
+    start_timer_thread_and_unlock();
+  } else {
+    gpr_mu_unlock(&g_mu);
+  }
+}
+
+void grpc_timer_manager_init(void) {
+  gpr_mu_init(&g_mu);
+  gpr_cv_init(&g_cv_wait);
+  gpr_cv_init(&g_cv_shutdown);
+  g_threaded = false;
+  g_thread_count = 0;
+  g_waiter_count = 0;
+  g_completed_threads = nullptr;
+
+  g_has_timed_waiter = false;
+  g_timed_waiter_deadline = GRPC_MILLIS_INF_FUTURE;
+
+  start_threads();
+}
+
+static void stop_threads(void) {
+  gpr_mu_lock(&g_mu);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+    gpr_log(GPR_INFO, "stop timer threads: threaded=%d", g_threaded);
+  }
+  if (g_threaded) {
+    g_threaded = false;
+    gpr_cv_broadcast(&g_cv_wait);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+      gpr_log(GPR_INFO, "num timer threads: %d", g_thread_count);
+    }
+    while (g_thread_count > 0) {
+      gpr_cv_wait(&g_cv_shutdown, &g_mu, gpr_inf_future(GPR_CLOCK_MONOTONIC));
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_timer_check_trace)) {
+        gpr_log(GPR_INFO, "num timer threads: %d", g_thread_count);
+      }
+      gc_completed_threads();
+    }
+  }
+  g_wakeups = 0;
+  gpr_mu_unlock(&g_mu);
+}
+
+void grpc_timer_manager_shutdown(void) {
+  stop_threads();
+
+  gpr_mu_destroy(&g_mu);
+  gpr_cv_destroy(&g_cv_wait);
+  gpr_cv_destroy(&g_cv_shutdown);
+}
+
+void grpc_timer_manager_set_threading(bool threaded) {
+  if (threaded) {
+    start_threads();
+  } else {
+    stop_threads();
+  }
+}
+
+void grpc_kick_poller(void) {
+  gpr_mu_lock(&g_mu);
+  g_kicked = true;
+  g_has_timed_waiter = false;
+  g_timed_waiter_deadline = GRPC_MILLIS_INF_FUTURE;
+  ++g_timed_waiter_generation;
+  gpr_cv_signal(&g_cv_wait);
+  gpr_mu_unlock(&g_mu);
+}
+
+uint64_t grpc_timer_manager_get_wakeups_testonly(void) { return g_wakeups; }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.h
new file mode 100644
index 0000000..d407cbb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_manager.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+/* Timer Manager tries to keep only one thread waiting for the next timeout at
+   all times, and thus effectively preventing the thundering herd problem. */
+
+void grpc_timer_manager_init(void);
+void grpc_timer_manager_shutdown(void);
+
+/* enable/disable threading - must be called after grpc_timer_manager_init and
+ * before grpc_timer_manager_shutdown */
+void grpc_timer_manager_set_threading(bool enabled);
+/* explicitly perform one tick of the timer system - for when threading is
+ * disabled */
+void grpc_timer_manager_tick(void);
+/* get global counter that tracks timer wakeups */
+uint64_t grpc_timer_manager_get_wakeups_testonly(void);
+
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_MANAGER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_uv.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_uv.cc
new file mode 100644
index 0000000..8b7c82e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/timer_uv.cc	
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/iomgr_custom.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_custom.h"
+
+#include <uv.h>
+
+static void timer_close_callback(uv_handle_t* handle) { gpr_free(handle); }
+
+static void stop_uv_timer(uv_timer_t* handle) {
+  uv_timer_stop(handle);
+  uv_unref((uv_handle_t*)handle);
+  uv_close((uv_handle_t*)handle, timer_close_callback);
+}
+
+void run_expired_timer(uv_timer_t* handle) {
+  grpc_custom_timer* timer_wrapper = (grpc_custom_timer*)handle->data;
+  grpc_custom_timer_callback(timer_wrapper, GRPC_ERROR_NONE);
+}
+
+static void timer_start(grpc_custom_timer* t) {
+  uv_timer_t* uv_timer;
+  uv_timer = (uv_timer_t*)gpr_malloc(sizeof(uv_timer_t));
+  uv_timer_init(uv_default_loop(), uv_timer);
+  uv_timer->data = t;
+  t->timer = (void*)uv_timer;
+  uv_timer_start(uv_timer, run_expired_timer, t->timeout_ms, 0);
+  // Node uses a garbage collector to call destructors, so we don't
+  // want to hold the uv loop open with active gRPC objects.
+  uv_unref((uv_handle_t*)uv_timer);
+}
+
+static void timer_stop(grpc_custom_timer* t) {
+  stop_uv_timer((uv_timer_t*)t->timer);
+}
+
+grpc_custom_timer_vtable uv_timer_vtable = {timer_start, timer_stop};
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.cc
new file mode 100644
index 0000000..0bfd22f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.cc	
@@ -0,0 +1,752 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* FIXME: "posix" files shouldn't be depending on _GNU_SOURCE */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#ifndef SO_RXQ_OVFL
+#define SO_RXQ_OVFL 40
+#endif
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET_UDP_SERVER
+
+#include "src/core/lib/iomgr/udp_server.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+/* A listener which implements basic features of Listening on a port for
+ * I/O events*/
+class GrpcUdpListener {
+ public:
+  GrpcUdpListener(grpc_udp_server* server, int fd,
+                  const grpc_resolved_address* addr);
+  ~GrpcUdpListener();
+
+  /* Called when grpc server starts to listening on the grpc_fd. */
+  void StartListening(grpc_pollset** pollsets, size_t pollset_count,
+                      GrpcUdpHandlerFactory* handler_factory);
+
+  /* Called when data is available to read from the socket.
+   * Return true if there is more data to read from fd. */
+  void OnRead(grpc_error* error, void* do_read_arg);
+
+  /* Called when the socket is writeable. The given closure should be scheduled
+   * when the socket becomes blocked next time. */
+  void OnCanWrite(grpc_error* error, void* do_write_arg);
+
+  /* Called when the grpc_fd is about to be orphaned (and the FD closed). */
+  void OnFdAboutToOrphan();
+
+  /* Called to orphan fd of this listener.*/
+  void OrphanFd();
+
+  /* Called when this listener is going to be destroyed. */
+  void OnDestroy();
+
+  int fd() const { return fd_; }
+
+ protected:
+  grpc_fd* emfd() const { return emfd_; }
+
+  gpr_mu* mutex() { return &mutex_; }
+
+ private:
+  /* event manager callback when reads are ready */
+  static void on_read(void* arg, grpc_error* error);
+  static void on_write(void* arg, grpc_error* error);
+
+  static void do_read(void* arg, grpc_error* error);
+  static void do_write(void* arg, grpc_error* error);
+  // Wrapper of grpc_fd_notify_on_write() with a grpc_closure callback
+  // interface.
+  static void fd_notify_on_write_wrapper(void* arg, grpc_error* error);
+
+  static void shutdown_fd(void* args, grpc_error* error);
+
+  int fd_;
+  grpc_fd* emfd_;
+  grpc_udp_server* server_;
+  grpc_resolved_address addr_;
+  grpc_closure read_closure_;
+  grpc_closure write_closure_;
+  // To be called when corresponding QuicGrpcServer closes all active
+  // connections.
+  grpc_closure orphan_fd_closure_;
+  grpc_closure destroyed_closure_;
+  // To be scheduled on another thread to actually read/write.
+  grpc_closure do_read_closure_;
+  grpc_closure do_write_closure_;
+  grpc_closure notify_on_write_closure_;
+  // True if orphan_cb is trigered.
+  bool orphan_notified_;
+  // True if grpc_fd_notify_on_write() is called after on_write() call.
+  bool notify_on_write_armed_;
+  // True if fd has been shutdown.
+  bool already_shutdown_;
+  // Object actually handles I/O events. Assigned in StartListening().
+  GrpcUdpHandler* udp_handler_ = nullptr;
+  // To be notified on destruction.
+  GrpcUdpHandlerFactory* handler_factory_ = nullptr;
+  // Required to access above fields.
+  gpr_mu mutex_;
+};
+
+GrpcUdpListener::GrpcUdpListener(grpc_udp_server* server, int fd,
+                                 const grpc_resolved_address* addr)
+    : fd_(fd),
+      server_(server),
+      orphan_notified_(false),
+      already_shutdown_(false) {
+  char* addr_str;
+  char* name;
+  grpc_sockaddr_to_string(&addr_str, addr, 1);
+  gpr_asprintf(&name, "udp-server-listener:%s", addr_str);
+  gpr_free(addr_str);
+  emfd_ = grpc_fd_create(fd, name, true);
+  memcpy(&addr_, addr, sizeof(grpc_resolved_address));
+  GPR_ASSERT(emfd_);
+  gpr_free(name);
+  gpr_mu_init(&mutex_);
+}
+
+GrpcUdpListener::~GrpcUdpListener() { gpr_mu_destroy(&mutex_); }
+
+/* the overall server */
+struct grpc_udp_server {
+  gpr_mu mu;
+
+  /* factory to use for creating and binding sockets, or NULL */
+  grpc_socket_factory* socket_factory;
+
+  /* active port count: how many ports are actually still listening */
+  size_t active_ports;
+  /* destroyed port count: how many ports are completely destroyed */
+  size_t destroyed_ports;
+
+  /* is this server shutting down? (boolean) */
+  int shutdown;
+
+  /* An array of listeners */
+  grpc_core::InlinedVector<GrpcUdpListener, 16> listeners;
+
+  /* factory for use to create udp listeners */
+  GrpcUdpHandlerFactory* handler_factory;
+
+  /* shutdown callback */
+  grpc_closure* shutdown_complete;
+
+  /* all pollsets interested in new connections */
+  grpc_pollset** pollsets;
+  /* number of pollsets in the pollsets array */
+  size_t pollset_count;
+  /* opaque object to pass to callbacks */
+  void* user_data;
+
+  /* latch has_so_reuseport during server creation */
+  bool so_reuseport;
+};
+
+static grpc_socket_factory* get_socket_factory(const grpc_channel_args* args) {
+  if (args) {
+    const grpc_arg* arg = grpc_channel_args_find(args, GRPC_ARG_SOCKET_FACTORY);
+    if (arg) {
+      GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
+      return static_cast<grpc_socket_factory*>(arg->value.pointer.p);
+    }
+  }
+  return nullptr;
+}
+
+grpc_udp_server* grpc_udp_server_create(const grpc_channel_args* args) {
+  grpc_udp_server* s = new grpc_udp_server();
+  gpr_mu_init(&s->mu);
+  s->socket_factory = get_socket_factory(args);
+  if (s->socket_factory) {
+    grpc_socket_factory_ref(s->socket_factory);
+  }
+  s->active_ports = 0;
+  s->destroyed_ports = 0;
+  s->shutdown = 0;
+  s->so_reuseport = grpc_is_socket_reuse_port_supported();
+  return s;
+}
+
+// static
+void GrpcUdpListener::shutdown_fd(void* args, grpc_error* error) {
+  if (args == nullptr) {
+    // No-op if shutdown args are null.
+    return;
+  }
+  auto sp = static_cast<GrpcUdpListener*>(args);
+  gpr_mu_lock(sp->mutex());
+  gpr_log(GPR_DEBUG, "shutdown fd %d", sp->fd_);
+  grpc_fd_shutdown(sp->emfd_, GRPC_ERROR_REF(error));
+  sp->already_shutdown_ = true;
+  if (!sp->notify_on_write_armed_) {
+    // Re-arm write notification to notify listener with error. This is
+    // necessary to decrement active_ports.
+    sp->notify_on_write_armed_ = true;
+    grpc_fd_notify_on_write(sp->emfd_, &sp->write_closure_);
+  }
+  gpr_mu_unlock(sp->mutex());
+}
+
+static void finish_shutdown(grpc_udp_server* s) {
+  if (s->shutdown_complete != nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->shutdown_complete,
+                            GRPC_ERROR_NONE);
+  }
+
+  gpr_mu_destroy(&s->mu);
+
+  gpr_log(GPR_DEBUG, "Destroy all listeners.");
+  for (size_t i = 0; i < s->listeners.size(); ++i) {
+    s->listeners[i].OnDestroy();
+  }
+
+  if (s->socket_factory) {
+    grpc_socket_factory_unref(s->socket_factory);
+  }
+
+  delete s;
+}
+
+static void destroyed_port(void* server, grpc_error* /*error*/) {
+  grpc_udp_server* s = static_cast<grpc_udp_server*>(server);
+  gpr_mu_lock(&s->mu);
+  s->destroyed_ports++;
+  if (s->destroyed_ports == s->listeners.size()) {
+    gpr_mu_unlock(&s->mu);
+    finish_shutdown(s);
+  } else {
+    gpr_mu_unlock(&s->mu);
+  }
+}
+
+/* called when all listening endpoints have been shutdown, so no further
+   events will be received on them - at this point it's safe to destroy
+   things */
+static void deactivated_all_ports(grpc_udp_server* s) {
+  /* delete ALL the things */
+  gpr_mu_lock(&s->mu);
+
+  GPR_ASSERT(s->shutdown);
+
+  if (s->listeners.size() == 0) {
+    gpr_mu_unlock(&s->mu);
+    finish_shutdown(s);
+    return;
+  }
+  for (size_t i = 0; i < s->listeners.size(); ++i) {
+    s->listeners[i].OrphanFd();
+  }
+  gpr_mu_unlock(&s->mu);
+}
+
+void GrpcUdpListener::OrphanFd() {
+  gpr_log(GPR_DEBUG, "Orphan fd %d, emfd %p", fd_, emfd_);
+  grpc_unlink_if_unix_domain_socket(&addr_);
+
+  GRPC_CLOSURE_INIT(&destroyed_closure_, destroyed_port, server_,
+                    grpc_schedule_on_exec_ctx);
+  /* Because at this point, all listening sockets have been shutdown already, no
+   * need to call OnFdAboutToOrphan() to notify the handler again. */
+  grpc_fd_orphan(emfd_, &destroyed_closure_, nullptr, "udp_listener_shutdown");
+}
+
+void grpc_udp_server_destroy(grpc_udp_server* s, grpc_closure* on_done) {
+  gpr_mu_lock(&s->mu);
+
+  GPR_ASSERT(!s->shutdown);
+  s->shutdown = 1;
+
+  s->shutdown_complete = on_done;
+
+  gpr_log(GPR_DEBUG, "start to destroy udp_server");
+  /* shutdown all fd's */
+  if (s->active_ports) {
+    for (size_t i = 0; i < s->listeners.size(); ++i) {
+      GrpcUdpListener* sp = &s->listeners[i];
+      sp->OnFdAboutToOrphan();
+    }
+    gpr_mu_unlock(&s->mu);
+  } else {
+    gpr_mu_unlock(&s->mu);
+    deactivated_all_ports(s);
+  }
+}
+
+void GrpcUdpListener::OnFdAboutToOrphan() {
+  gpr_mu_lock(&mutex_);
+  grpc_unlink_if_unix_domain_socket(&addr_);
+
+  GRPC_CLOSURE_INIT(&destroyed_closure_, destroyed_port, server_,
+                    grpc_schedule_on_exec_ctx);
+  if (!orphan_notified_ && udp_handler_ != nullptr) {
+    /* Signals udp_handler that the FD is about to be closed and
+     * should no longer be used. */
+    GRPC_CLOSURE_INIT(&orphan_fd_closure_, shutdown_fd, this,
+                      grpc_schedule_on_exec_ctx);
+    gpr_log(GPR_DEBUG, "fd %d about to be orphaned", fd_);
+    udp_handler_->OnFdAboutToOrphan(&orphan_fd_closure_, server_->user_data);
+    orphan_notified_ = true;
+  }
+  gpr_mu_unlock(&mutex_);
+}
+
+static int bind_socket(grpc_socket_factory* socket_factory, int sockfd,
+                       const grpc_resolved_address* addr) {
+  return (socket_factory != nullptr)
+             ? grpc_socket_factory_bind(socket_factory, sockfd, addr)
+             : bind(sockfd,
+                    reinterpret_cast<grpc_sockaddr*>(
+                        const_cast<char*>(addr->addr)),
+                    addr->len);
+}
+
+/* Prepare a recently-created socket for listening. */
+static int prepare_socket(grpc_socket_factory* socket_factory, int fd,
+                          const grpc_resolved_address* addr, int rcv_buf_size,
+                          int snd_buf_size, bool so_reuseport) {
+  grpc_resolved_address sockname_temp;
+  grpc_sockaddr* addr_ptr =
+      reinterpret_cast<grpc_sockaddr*>(const_cast<char*>(addr->addr));
+
+  if (fd < 0) {
+    goto error;
+  }
+
+  if (grpc_set_socket_nonblocking(fd, 1) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Unable to set nonblocking %d: %s", fd, strerror(errno));
+    goto error;
+  }
+  if (grpc_set_socket_cloexec(fd, 1) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Unable to set cloexec %d: %s", fd, strerror(errno));
+    goto error;
+  }
+
+  if (grpc_set_socket_ip_pktinfo_if_possible(fd) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Unable to set ip_pktinfo.");
+    goto error;
+  } else if (addr_ptr->sa_family == AF_INET6) {
+    if (grpc_set_socket_ipv6_recvpktinfo_if_possible(fd) != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "Unable to set ipv6_recvpktinfo.");
+      goto error;
+    }
+  }
+
+  if (grpc_set_socket_sndbuf(fd, snd_buf_size) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Failed to set send buffer size to %d bytes",
+            snd_buf_size);
+    goto error;
+  }
+
+  if (grpc_set_socket_rcvbuf(fd, rcv_buf_size) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Failed to set receive buffer size to %d bytes",
+            rcv_buf_size);
+    goto error;
+  }
+
+  {
+    int get_overflow = 1;
+    if (0 != setsockopt(fd, SOL_SOCKET, SO_RXQ_OVFL, &get_overflow,
+                        sizeof(get_overflow))) {
+      gpr_log(GPR_INFO, "Failed to set socket overflow support");
+    }
+  }
+
+  if (so_reuseport && !grpc_is_unix_socket(addr) &&
+      grpc_set_socket_reuse_port(fd, 1) != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Failed to set SO_REUSEPORT for fd %d", fd);
+    goto error;
+  }
+
+  if (bind_socket(socket_factory, fd, addr) < 0) {
+    char* addr_str;
+    grpc_sockaddr_to_string(&addr_str, addr, 0);
+    gpr_log(GPR_ERROR, "bind addr=%s: %s", addr_str, strerror(errno));
+    gpr_free(addr_str);
+    goto error;
+  }
+
+  sockname_temp.len = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+
+  if (getsockname(fd, reinterpret_cast<grpc_sockaddr*>(sockname_temp.addr),
+                  &sockname_temp.len) < 0) {
+    gpr_log(GPR_ERROR, "Unable to get the address socket %d is bound to: %s",
+            fd, strerror(errno));
+    goto error;
+  }
+
+  return grpc_sockaddr_get_port(&sockname_temp);
+
+error:
+  if (fd >= 0) {
+    close(fd);
+  }
+  return -1;
+}
+
+// static
+void GrpcUdpListener::do_read(void* arg, grpc_error* error) {
+  GrpcUdpListener* sp = static_cast<GrpcUdpListener*>(arg);
+  GPR_ASSERT(error == GRPC_ERROR_NONE);
+  /* TODO: the reason we hold server->mu here is merely to prevent fd
+   * shutdown while we are reading. However, it blocks do_write(). Switch to
+   * read lock if available. */
+  gpr_mu_lock(sp->mutex());
+  /* Tell the registered callback that data is available to read. */
+  if (!sp->already_shutdown_ && sp->udp_handler_->Read()) {
+    /* There maybe more packets to read. Schedule read_more_cb_ closure to run
+     * after finishing this event loop. */
+    grpc_core::Executor::Run(&sp->do_read_closure_, GRPC_ERROR_NONE,
+                             grpc_core::ExecutorType::DEFAULT,
+                             grpc_core::ExecutorJobType::LONG);
+  } else {
+    /* Finish reading all the packets, re-arm the notification event so we can
+     * get another chance to read. Or fd already shutdown, re-arm to get a
+     * notification with shutdown error. */
+    grpc_fd_notify_on_read(sp->emfd_, &sp->read_closure_);
+  }
+  gpr_mu_unlock(sp->mutex());
+}
+
+// static
+void GrpcUdpListener::on_read(void* arg, grpc_error* error) {
+  GrpcUdpListener* sp = static_cast<GrpcUdpListener*>(arg);
+  sp->OnRead(error, arg);
+}
+
+void GrpcUdpListener::OnRead(grpc_error* error, void* do_read_arg) {
+  if (error != GRPC_ERROR_NONE) {
+    gpr_mu_lock(&server_->mu);
+    if (0 == --server_->active_ports && server_->shutdown) {
+      gpr_mu_unlock(&server_->mu);
+      deactivated_all_ports(server_);
+    } else {
+      gpr_mu_unlock(&server_->mu);
+    }
+    return;
+  }
+
+  /* Read once. If there is more data to read, off load the work to another
+   * thread to finish. */
+  if (udp_handler_->Read()) {
+    /* There maybe more packets to read. Schedule read_more_cb_ closure to run
+     * after finishing this event loop. */
+    GRPC_CLOSURE_INIT(&do_read_closure_, do_read, do_read_arg, nullptr);
+    grpc_core::Executor::Run(&do_read_closure_, GRPC_ERROR_NONE,
+                             grpc_core::ExecutorType::DEFAULT,
+                             grpc_core::ExecutorJobType::LONG);
+  } else {
+    /* Finish reading all the packets, re-arm the notification event so we can
+     * get another chance to read. Or fd already shutdown, re-arm to get a
+     * notification with shutdown error. */
+    grpc_fd_notify_on_read(emfd_, &read_closure_);
+  }
+}
+
+// static
+// Wrapper of grpc_fd_notify_on_write() with a grpc_closure callback interface.
+void GrpcUdpListener::fd_notify_on_write_wrapper(void* arg,
+                                                 grpc_error* /*error*/) {
+  GrpcUdpListener* sp = static_cast<GrpcUdpListener*>(arg);
+  gpr_mu_lock(sp->mutex());
+  if (!sp->notify_on_write_armed_) {
+    grpc_fd_notify_on_write(sp->emfd_, &sp->write_closure_);
+    sp->notify_on_write_armed_ = true;
+  }
+  gpr_mu_unlock(sp->mutex());
+}
+
+// static
+void GrpcUdpListener::do_write(void* arg, grpc_error* error) {
+  GrpcUdpListener* sp = static_cast<GrpcUdpListener*>(arg);
+  gpr_mu_lock(sp->mutex());
+  if (sp->already_shutdown_) {
+    // If fd has been shutdown, don't write any more and re-arm notification.
+    grpc_fd_notify_on_write(sp->emfd_, &sp->write_closure_);
+  } else {
+    sp->notify_on_write_armed_ = false;
+    /* Tell the registered callback that the socket is writeable. */
+    GPR_ASSERT(error == GRPC_ERROR_NONE);
+    GRPC_CLOSURE_INIT(&sp->notify_on_write_closure_, fd_notify_on_write_wrapper,
+                      arg, grpc_schedule_on_exec_ctx);
+    sp->udp_handler_->OnCanWrite(sp->server_->user_data,
+                                 &sp->notify_on_write_closure_);
+  }
+  gpr_mu_unlock(sp->mutex());
+}
+
+// static
+void GrpcUdpListener::on_write(void* arg, grpc_error* error) {
+  GrpcUdpListener* sp = static_cast<GrpcUdpListener*>(arg);
+  sp->OnCanWrite(error, arg);
+}
+
+void GrpcUdpListener::OnCanWrite(grpc_error* error, void* do_write_arg) {
+  if (error != GRPC_ERROR_NONE) {
+    gpr_mu_lock(&server_->mu);
+    if (0 == --server_->active_ports && server_->shutdown) {
+      gpr_mu_unlock(&server_->mu);
+      deactivated_all_ports(server_);
+    } else {
+      gpr_mu_unlock(&server_->mu);
+    }
+    return;
+  }
+
+  /* Schedule actual write in another thread. */
+  GRPC_CLOSURE_INIT(&do_write_closure_, do_write, do_write_arg, nullptr);
+
+  grpc_core::Executor::Run(&do_write_closure_, GRPC_ERROR_NONE,
+                           grpc_core::ExecutorType::DEFAULT,
+                           grpc_core::ExecutorJobType::LONG);
+}
+
+static int add_socket_to_server(grpc_udp_server* s, int fd,
+                                const grpc_resolved_address* addr,
+                                int rcv_buf_size, int snd_buf_size) {
+  gpr_log(GPR_DEBUG, "add socket %d to server", fd);
+
+  int port = prepare_socket(s->socket_factory, fd, addr, rcv_buf_size,
+                            snd_buf_size, s->so_reuseport);
+  if (port >= 0) {
+    gpr_mu_lock(&s->mu);
+    s->listeners.emplace_back(s, fd, addr);
+    gpr_log(GPR_DEBUG,
+            "add socket %d to server for port %d, %zu listener(s) in total", fd,
+            port, s->listeners.size());
+    gpr_mu_unlock(&s->mu);
+  }
+  return port;
+}
+
+int grpc_udp_server_add_port(grpc_udp_server* s,
+                             const grpc_resolved_address* addr,
+                             int rcv_buf_size, int snd_buf_size,
+                             GrpcUdpHandlerFactory* handler_factory,
+                             size_t num_listeners) {
+  if (num_listeners > 1 && !s->so_reuseport) {
+    gpr_log(GPR_ERROR,
+            "Try to have multiple listeners on same port, but SO_REUSEPORT is "
+            "not supported. Only create 1 listener.");
+  }
+  char* addr_str;
+  grpc_sockaddr_to_string(&addr_str, addr, 1);
+  gpr_log(GPR_DEBUG, "add address: %s to server", addr_str);
+  gpr_free(addr_str);
+
+  int allocated_port1 = -1;
+  int allocated_port2 = -1;
+  int fd;
+  grpc_dualstack_mode dsmode;
+  grpc_resolved_address addr6_v4mapped;
+  grpc_resolved_address wild4;
+  grpc_resolved_address wild6;
+  grpc_resolved_address addr4_copy;
+  grpc_resolved_address* allocated_addr = nullptr;
+  grpc_resolved_address sockname_temp;
+  int port = 0;
+
+  /* Check if this is a wildcard port, and if so, try to keep the port the same
+     as some previously created listener. */
+  if (grpc_sockaddr_get_port(addr) == 0) {
+    /* Loop through existing listeners to find the port in use. */
+    for (size_t i = 0; i < s->listeners.size(); ++i) {
+      sockname_temp.len =
+          static_cast<socklen_t>(sizeof(struct sockaddr_storage));
+      if (0 == getsockname(s->listeners[i].fd(),
+                           reinterpret_cast<grpc_sockaddr*>(sockname_temp.addr),
+                           &sockname_temp.len)) {
+        port = grpc_sockaddr_get_port(&sockname_temp);
+        if (port > 0) {
+          /* Found such a port, update |addr| to reflects this port. */
+          allocated_addr = static_cast<grpc_resolved_address*>(
+              gpr_malloc(sizeof(grpc_resolved_address)));
+          memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
+          grpc_sockaddr_set_port(allocated_addr, port);
+          addr = allocated_addr;
+          break;
+        }
+      }
+    }
+  }
+
+  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
+    addr = &addr6_v4mapped;
+  }
+
+  s->handler_factory = handler_factory;
+  for (size_t i = 0; i < num_listeners; ++i) {
+    /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
+    if (grpc_sockaddr_is_wildcard(addr, &port)) {
+      grpc_sockaddr_make_wildcards(port, &wild4, &wild6);
+
+      /* Try listening on IPv6 first. */
+      addr = &wild6;
+      // TODO(rjshade): Test and propagate the returned grpc_error*:
+      GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
+          s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
+      allocated_port1 =
+          add_socket_to_server(s, fd, addr, rcv_buf_size, snd_buf_size);
+      if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) {
+        if (port == 0) {
+          /* This is the first time to bind to |addr|. If its port is still
+           * wildcard port, update |addr| with the ephermeral port returned by
+           * kernel. Thus |addr| can have a specific port in following
+           * iterations. */
+          grpc_sockaddr_set_port(addr, allocated_port1);
+          port = allocated_port1;
+        } else if (allocated_port1 >= 0) {
+          /* The following successfully created socket should have same port as
+           * the first one. */
+          GPR_ASSERT(port == allocated_port1);
+        }
+        /* A dualstack socket is created, no need to create corresponding IPV4
+         * socket. */
+        continue;
+      }
+
+      /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */
+      if (port == 0 && allocated_port1 > 0) {
+        /* |port| hasn't been assigned to an emphemeral port yet, |wild4| must
+         * have a wildcard port. Update it with the emphemeral port created
+         * during binding.*/
+        grpc_sockaddr_set_port(&wild4, allocated_port1);
+        port = allocated_port1;
+      }
+      /* |wild4| should have been updated with an emphemeral port by now. Use
+       * this IPV4 address to create a IPV4 socket. */
+      addr = &wild4;
+    }
+
+    // TODO(rjshade): Test and propagate the returned grpc_error*:
+    GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
+        s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
+    if (fd < 0) {
+      gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno));
+    }
+    if (dsmode == GRPC_DSMODE_IPV4 &&
+        grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
+      addr = &addr4_copy;
+    }
+    allocated_port2 =
+        add_socket_to_server(s, fd, addr, rcv_buf_size, snd_buf_size);
+    if (port == 0) {
+      /* Update |addr| with the ephermeral port returned by kernel. So |addr|
+       * can have a specific port in following iterations. */
+      grpc_sockaddr_set_port(addr, allocated_port2);
+      port = allocated_port2;
+    } else if (allocated_port2 >= 0) {
+      GPR_ASSERT(port == allocated_port2);
+    }
+  }
+
+  gpr_free(allocated_addr);
+  return port;
+}
+
+int grpc_udp_server_get_fd(grpc_udp_server* s, unsigned port_index) {
+  if (port_index >= s->listeners.size()) {
+    return -1;
+  }
+
+  return s->listeners[port_index].fd();
+}
+
+void grpc_udp_server_start(grpc_udp_server* s, grpc_pollset** pollsets,
+                           size_t pollset_count, void* user_data) {
+  gpr_log(GPR_DEBUG, "grpc_udp_server_start");
+  gpr_mu_lock(&s->mu);
+  GPR_ASSERT(s->active_ports == 0);
+  s->pollsets = pollsets;
+  s->user_data = user_data;
+
+  for (size_t i = 0; i < s->listeners.size(); ++i) {
+    s->listeners[i].StartListening(pollsets, pollset_count, s->handler_factory);
+  }
+
+  gpr_mu_unlock(&s->mu);
+}
+
+void GrpcUdpListener::StartListening(grpc_pollset** pollsets,
+                                     size_t pollset_count,
+                                     GrpcUdpHandlerFactory* handler_factory) {
+  gpr_mu_lock(&mutex_);
+  handler_factory_ = handler_factory;
+  udp_handler_ = handler_factory->CreateUdpHandler(emfd_, server_->user_data);
+  for (size_t i = 0; i < pollset_count; i++) {
+    grpc_pollset_add_fd(pollsets[i], emfd_);
+  }
+  GRPC_CLOSURE_INIT(&read_closure_, on_read, this, grpc_schedule_on_exec_ctx);
+  grpc_fd_notify_on_read(emfd_, &read_closure_);
+
+  GRPC_CLOSURE_INIT(&write_closure_, on_write, this, grpc_schedule_on_exec_ctx);
+  notify_on_write_armed_ = true;
+  grpc_fd_notify_on_write(emfd_, &write_closure_);
+
+  /* Registered for both read and write callbacks: increment active_ports
+   * twice to account for this, and delay free-ing of memory until both
+   * on_read and on_write have fired. */
+  server_->active_ports += 2;
+  gpr_mu_unlock(&mutex_);
+}
+
+void GrpcUdpListener::OnDestroy() {
+  if (udp_handler_ != nullptr) {
+    handler_factory_->DestroyUdpHandler(udp_handler_);
+  }
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.h
new file mode 100644
index 0000000..e92f3b9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/udp_server.h	
@@ -0,0 +1,101 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Forward decl of struct grpc_server */
+/* This is not typedef'ed to avoid a typedef-redefinition error */
+struct grpc_server;
+
+/* Forward decl of grpc_udp_server */
+typedef struct grpc_udp_server grpc_udp_server;
+
+/* An interface associated with a socket. udp server delivers I/O event on that
+ * socket to the subclass of this interface which is created through
+ * GrpcUdpHandlerFactory.
+ * Its implementation should do the real IO work, e.g. read packet and write. */
+class GrpcUdpHandler {
+ public:
+  GrpcUdpHandler(grpc_fd* /* emfd */, void* /* user_data */) {}
+  virtual ~GrpcUdpHandler() {}
+
+  // Interfaces to be implemented by subclasses to do the actual setup/tear down
+  // or I/O.
+
+  // Called when data is available to read from the socket. Returns true if
+  // there is more data to read after this call.
+  virtual bool Read() = 0;
+  // Called when socket becomes write unblocked. The given closure should be
+  // scheduled when the socket becomes blocked next time.
+  virtual void OnCanWrite(void* user_data,
+                          grpc_closure* notify_on_write_closure) = 0;
+  // Called before the gRPC FD is orphaned. Notify udp server to continue
+  // orphaning fd by scheduling the given closure, afterwards the associated fd
+  // will be closed.
+  virtual void OnFdAboutToOrphan(grpc_closure* orphan_fd_closure,
+                                 void* user_data) = 0;
+};
+
+class GrpcUdpHandlerFactory {
+ public:
+  virtual ~GrpcUdpHandlerFactory() {}
+  /* Called when start to listen on a socket.
+   * Return an instance of the implementation of GrpcUdpHandler interface which
+   * will process I/O events for this socket from now on. */
+  virtual GrpcUdpHandler* CreateUdpHandler(grpc_fd* emfd, void* user_data) = 0;
+  virtual void DestroyUdpHandler(GrpcUdpHandler* handler) = 0;
+};
+
+/* Create a server, initially not bound to any ports */
+grpc_udp_server* grpc_udp_server_create(const grpc_channel_args* args);
+
+/* Start listening to bound ports. user_data is passed to callbacks. */
+void grpc_udp_server_start(grpc_udp_server* udp_server, grpc_pollset** pollsets,
+                           size_t pollset_count, void* user_data);
+
+int grpc_udp_server_get_fd(grpc_udp_server* s, unsigned port_index);
+
+/* Add a port to the server, returning port number on success, or negative
+   on failure.
+
+   Create |num_listeners| sockets for given address to listen on using
+   SO_REUSEPORT if supported.
+
+   The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
+   both IPv4 and IPv6 connections, but :: is the preferred style. This usually
+   creates |num_listeners| sockets, but possibly 2 * |num_listeners| on systems
+   which support IPv6, but not dualstack sockets. */
+
+/* TODO(ctiller): deprecate this, and make grpc_udp_server_add_ports to handle
+                  all of the multiple socket port matching logic in one place */
+int grpc_udp_server_add_port(grpc_udp_server* s,
+                             const grpc_resolved_address* addr,
+                             int rcv_buf_size, int snd_buf_size,
+                             GrpcUdpHandlerFactory* handler_factory,
+                             size_t num_listeners);
+
+void grpc_udp_server_destroy(grpc_udp_server* server, grpc_closure* on_done);
+
+#endif /* GRPC_CORE_LIB_IOMGR_UDP_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.cc
new file mode 100644
index 0000000..22fcaf5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.cc	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_HAVE_UNIX_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+void grpc_create_socketpair_if_unix(int sv[2]) {
+  GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0);
+}
+
+grpc_error* grpc_resolve_unix_domain_address(const char* name,
+                                             grpc_resolved_addresses** addrs) {
+  struct sockaddr_un* un;
+  if (strlen(name) >
+      GPR_ARRAY_SIZE(((struct sockaddr_un*)nullptr)->sun_path) - 1) {
+    char* err_msg;
+    grpc_error* err;
+    gpr_asprintf(&err_msg,
+                 "Path name should not have more than %" PRIuPTR " characters.",
+                 GPR_ARRAY_SIZE(un->sun_path) - 1);
+    err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_msg);
+    gpr_free(err_msg);
+    return err;
+  }
+  *addrs = static_cast<grpc_resolved_addresses*>(
+      gpr_malloc(sizeof(grpc_resolved_addresses)));
+  (*addrs)->naddrs = 1;
+  (*addrs)->addrs = static_cast<grpc_resolved_address*>(
+      gpr_malloc(sizeof(grpc_resolved_address)));
+  un = reinterpret_cast<struct sockaddr_un*>((*addrs)->addrs->addr);
+  un->sun_family = AF_UNIX;
+  strncpy(un->sun_path, name, sizeof(un->sun_path));
+  (*addrs)->addrs->len =
+      static_cast<socklen_t>(strlen(un->sun_path) + sizeof(un->sun_family) + 1);
+  return GRPC_ERROR_NONE;
+}
+
+int grpc_is_unix_socket(const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  return addr->sa_family == AF_UNIX;
+}
+
+void grpc_unlink_if_unix_domain_socket(
+    const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  if (addr->sa_family != AF_UNIX) {
+    return;
+  }
+  struct sockaddr_un* un = reinterpret_cast<struct sockaddr_un*>(
+      const_cast<char*>(resolved_addr->addr));
+  struct stat st;
+
+  if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
+    unlink(un->sun_path);
+  }
+}
+
+char* grpc_sockaddr_to_uri_unix_if_possible(
+    const grpc_resolved_address* resolved_addr) {
+  const grpc_sockaddr* addr =
+      reinterpret_cast<const grpc_sockaddr*>(resolved_addr->addr);
+  if (addr->sa_family != AF_UNIX) {
+    return nullptr;
+  }
+
+  char* result;
+  gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un*)addr)->sun_path);
+  return result;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.h
new file mode 100644
index 0000000..917d032
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+
+void grpc_create_socketpair_if_unix(int sv[2]);
+
+grpc_error* grpc_resolve_unix_domain_address(
+    const char* name, grpc_resolved_addresses** addresses);
+
+int grpc_is_unix_socket(const grpc_resolved_address* resolved_addr);
+
+void grpc_unlink_if_unix_domain_socket(
+    const grpc_resolved_address* resolved_addr);
+
+char* grpc_sockaddr_to_uri_unix_if_possible(
+    const grpc_resolved_address* resolved_addr);
+
+#endif /* GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix_noop.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix_noop.cc
new file mode 100644
index 0000000..dfab3e0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/unix_sockets_posix_noop.cc	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#ifndef GRPC_HAVE_UNIX_SOCKET
+
+#include <grpc/support/log.h>
+
+void grpc_create_socketpair_if_unix(int sv[2]) {
+  // TODO: Either implement this for the non-Unix socket case or make
+  // sure that it is never called in any such case. Until then, leave an
+  // assertion to notify if this gets called inadvertently
+  GPR_ASSERT(0);
+}
+
+grpc_error* grpc_resolve_unix_domain_address(
+    const char* name, grpc_resolved_addresses** addresses) {
+  *addresses = NULL;
+  return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+      "Unix domain sockets are not supported on Windows");
+}
+
+int grpc_is_unix_socket(const grpc_resolved_address* addr) { return false; }
+
+void grpc_unlink_if_unix_domain_socket(const grpc_resolved_address* addr) {}
+
+char* grpc_sockaddr_to_uri_unix_if_possible(const grpc_resolved_address* addr) {
+  return NULL;
+}
+
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_eventfd.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_eventfd.cc
new file mode 100644
index 0000000..d68c9ad
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_eventfd.cc	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_LINUX_EVENTFD
+
+#include <errno.h>
+#include <sys/eventfd.h>
+#include <unistd.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+
+static grpc_error* eventfd_create(grpc_wakeup_fd* fd_info) {
+  fd_info->read_fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
+  fd_info->write_fd = -1;
+  if (fd_info->read_fd < 0) {
+    return GRPC_OS_ERROR(errno, "eventfd");
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* eventfd_consume(grpc_wakeup_fd* fd_info) {
+  eventfd_t value;
+  int err;
+  do {
+    err = eventfd_read(fd_info->read_fd, &value);
+  } while (err < 0 && errno == EINTR);
+  if (err < 0 && errno != EAGAIN) {
+    return GRPC_OS_ERROR(errno, "eventfd_read");
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* eventfd_wakeup(grpc_wakeup_fd* fd_info) {
+  GPR_TIMER_SCOPE("eventfd_wakeup", 0);
+  int err;
+  do {
+    err = eventfd_write(fd_info->read_fd, 1);
+  } while (err < 0 && errno == EINTR);
+  if (err < 0) {
+    return GRPC_OS_ERROR(errno, "eventfd_write");
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static void eventfd_destroy(grpc_wakeup_fd* fd_info) {
+  if (fd_info->read_fd != 0) close(fd_info->read_fd);
+}
+
+static int eventfd_check_availability(void) {
+  const int efd = eventfd(0, 0);
+  const int is_available = efd >= 0;
+  if (is_available) close(efd);
+  return is_available;
+}
+
+const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable = {
+    eventfd_create, eventfd_consume, eventfd_wakeup, eventfd_destroy,
+    eventfd_check_availability};
+
+#endif /* GRPC_LINUX_EVENTFD */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_nospecial.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_nospecial.cc
new file mode 100644
index 0000000..6477892
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_nospecial.cc	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * This is a dummy file to provide an invalid specialized_wakeup_fd_vtable on
+ * systems without anything better than pipe.
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_NO_SPECIAL_WAKEUP_FD
+
+#include <stddef.h>
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+static int check_availability_invalid(void) { return 0; }
+
+const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable = {
+    nullptr, nullptr, nullptr, nullptr, check_availability_invalid};
+
+#endif /* GRPC_POSIX_NO_SPECIAL_WAKEUP_FD */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.cc
new file mode 100644
index 0000000..cb17390
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.cc	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_WAKEUP_FD
+
+#include "src/core/lib/iomgr/wakeup_fd_pipe.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+static grpc_error* pipe_init(grpc_wakeup_fd* fd_info) {
+  int pipefd[2];
+  int r = pipe(pipefd);
+  if (0 != r) {
+    gpr_log(GPR_ERROR, "pipe creation failed (%d): %s", errno, strerror(errno));
+    return GRPC_OS_ERROR(errno, "pipe");
+  }
+  grpc_error* err;
+  err = grpc_set_socket_nonblocking(pipefd[0], 1);
+  if (err != GRPC_ERROR_NONE) return err;
+  err = grpc_set_socket_nonblocking(pipefd[1], 1);
+  if (err != GRPC_ERROR_NONE) return err;
+  fd_info->read_fd = pipefd[0];
+  fd_info->write_fd = pipefd[1];
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error* pipe_consume(grpc_wakeup_fd* fd_info) {
+  char buf[128];
+  ssize_t r;
+
+  for (;;) {
+    r = read(fd_info->read_fd, buf, sizeof(buf));
+    if (r > 0) continue;
+    if (r == 0) return GRPC_ERROR_NONE;
+    switch (errno) {
+      case EAGAIN:
+        return GRPC_ERROR_NONE;
+      case EINTR:
+        continue;
+      default:
+        return GRPC_OS_ERROR(errno, "read");
+    }
+  }
+}
+
+static grpc_error* pipe_wakeup(grpc_wakeup_fd* fd_info) {
+  char c = 0;
+  while (write(fd_info->write_fd, &c, 1) != 1 && errno == EINTR)
+    ;
+  return GRPC_ERROR_NONE;
+}
+
+static void pipe_destroy(grpc_wakeup_fd* fd_info) {
+  if (fd_info->read_fd != 0) close(fd_info->read_fd);
+  if (fd_info->write_fd != 0) close(fd_info->write_fd);
+}
+
+static int pipe_check_availability(void) {
+  grpc_wakeup_fd fd;
+  fd.read_fd = fd.write_fd = -1;
+
+  if (pipe_init(&fd) == GRPC_ERROR_NONE) {
+    pipe_destroy(&fd);
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+const grpc_wakeup_fd_vtable grpc_pipe_wakeup_fd_vtable = {
+    pipe_init, pipe_consume, pipe_wakeup, pipe_destroy,
+    pipe_check_availability};
+
+#endif /* GPR_POSIX_WAKUP_FD */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.h
new file mode 100644
index 0000000..1756976
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_pipe.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+extern const grpc_wakeup_fd_vtable grpc_pipe_wakeup_fd_vtable;
+
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.cc
new file mode 100644
index 0000000..3b66d6f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.cc	
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_WAKEUP_FD
+
+#include <stddef.h>
+#include "src/core/lib/iomgr/wakeup_fd_pipe.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+
+static const grpc_wakeup_fd_vtable* wakeup_fd_vtable = nullptr;
+
+int grpc_allow_specialized_wakeup_fd = 1;
+int grpc_allow_pipe_wakeup_fd = 1;
+
+int has_real_wakeup_fd = 1;
+int cv_wakeup_fds_enabled = 0;
+
+void grpc_wakeup_fd_global_init(void) {
+  if (grpc_allow_specialized_wakeup_fd &&
+      grpc_specialized_wakeup_fd_vtable.check_availability()) {
+    wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable;
+  } else if (grpc_allow_pipe_wakeup_fd &&
+             grpc_pipe_wakeup_fd_vtable.check_availability()) {
+    wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable;
+  } else {
+    has_real_wakeup_fd = 0;
+  }
+}
+
+void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = nullptr; }
+
+int grpc_has_wakeup_fd(void) { return has_real_wakeup_fd; }
+
+grpc_error* grpc_wakeup_fd_init(grpc_wakeup_fd* fd_info) {
+  return wakeup_fd_vtable->init(fd_info);
+}
+
+grpc_error* grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd* fd_info) {
+  return wakeup_fd_vtable->consume(fd_info);
+}
+
+grpc_error* grpc_wakeup_fd_wakeup(grpc_wakeup_fd* fd_info) {
+  return wakeup_fd_vtable->wakeup(fd_info);
+}
+
+void grpc_wakeup_fd_destroy(grpc_wakeup_fd* fd_info) {
+  wakeup_fd_vtable->destroy(fd_info);
+}
+
+#endif /* GRPC_POSIX_WAKEUP_FD */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.h
new file mode 100644
index 0000000..670c319
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/wakeup_fd_posix.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * wakeup_fd abstracts the concept of a file descriptor for the purpose of
+ * waking up a thread in select()/poll()/epoll_wait()/etc.
+
+ * The poll() family of system calls provide a way for a thread to block until
+ * there is activity on one (or more) of a set of file descriptors. An
+ * application may wish to wake up this thread to do non file related work. The
+ * typical way to do this is to add a pipe to the set of file descriptors, then
+ * write to the pipe to wake up the thread in poll().
+ *
+ * Linux has a lighter weight eventfd specifically designed for this purpose.
+ * wakeup_fd abstracts the difference between the two.
+ *
+ * Setup:
+ * 1. Before calling anything, call global_init() at least once.
+ * 1. Call grpc_wakeup_fd_init() to set up a wakeup_fd.
+ * 2. Add the result of GRPC_WAKEUP_FD_FD to the set of monitored file
+ *    descriptors for the poll() style API you are using. Monitor the file
+ *    descriptor for readability.
+ * 3. To tear down, call grpc_wakeup_fd_destroy(). This closes the underlying
+ *    file descriptor.
+ *
+ * Usage:
+ * 1. To wake up a polling thread, call grpc_wakeup_fd_wakeup() on a wakeup_fd
+ *    it is monitoring.
+ * 2. If the polling thread was awakened by a wakeup_fd event, call
+ *    grpc_wakeup_fd_consume_wakeup() on it.
+ */
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+
+void grpc_wakeup_fd_global_init(void);
+void grpc_wakeup_fd_global_destroy(void);
+
+/* Force using the fallback implementation. This is intended for testing
+ * purposes only.*/
+void grpc_wakeup_fd_global_init_force_fallback(void);
+
+int grpc_has_wakeup_fd(void);
+int grpc_cv_wakeup_fds_enabled(void);
+void grpc_enable_cv_wakeup_fds(int enable);
+
+typedef struct grpc_wakeup_fd grpc_wakeup_fd;
+
+typedef struct grpc_wakeup_fd_vtable {
+  grpc_error* (*init)(grpc_wakeup_fd* fd_info);
+  grpc_error* (*consume)(grpc_wakeup_fd* fd_info);
+  grpc_error* (*wakeup)(grpc_wakeup_fd* fd_info);
+  void (*destroy)(grpc_wakeup_fd* fd_info);
+  /* Must be called before calling any other functions */
+  int (*check_availability)(void);
+} grpc_wakeup_fd_vtable;
+
+struct grpc_wakeup_fd {
+  int read_fd;
+  int write_fd;
+};
+
+extern int grpc_allow_specialized_wakeup_fd;
+extern int grpc_allow_pipe_wakeup_fd;
+
+#define GRPC_WAKEUP_FD_GET_READ_FD(fd_info) ((fd_info)->read_fd)
+
+grpc_error* grpc_wakeup_fd_init(grpc_wakeup_fd* fd_info) GRPC_MUST_USE_RESULT;
+grpc_error* grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd* fd_info)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_wakeup_fd_wakeup(grpc_wakeup_fd* fd_info) GRPC_MUST_USE_RESULT;
+void grpc_wakeup_fd_destroy(grpc_wakeup_fd* fd_info);
+
+/* Defined in some specialized implementation's .c file, or by
+ * wakeup_fd_nospecial.c if no such implementation exists. */
+extern const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable;
+
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.cc
new file mode 100644
index 0000000..db573e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.cc	
@@ -0,0 +1,155 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/work_serializer.h"
+
+namespace grpc_core {
+
+DebugOnlyTraceFlag grpc_work_serializer_trace(false, "work_serializer");
+
+struct CallbackWrapper {
+  CallbackWrapper(std::function<void()> cb, const grpc_core::DebugLocation& loc)
+      : callback(std::move(cb)), location(loc) {}
+
+  MultiProducerSingleConsumerQueue::Node mpscq_node;
+  const std::function<void()> callback;
+  const DebugLocation location;
+};
+
+class WorkSerializer::WorkSerializerImpl : public Orphanable {
+ public:
+  void Run(std::function<void()> callback,
+           const grpc_core::DebugLocation& location);
+
+  void Orphan() override;
+
+ private:
+  void DrainQueue();
+
+  // An initial size of 1 keeps track of whether the work serializer has been
+  // orphaned.
+  Atomic<size_t> size_{1};
+  MultiProducerSingleConsumerQueue queue_;
+};
+
+void WorkSerializer::WorkSerializerImpl::Run(
+    std::function<void()> callback, const grpc_core::DebugLocation& location) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+    gpr_log(GPR_INFO, "WorkSerializer::Run() %p Scheduling callback [%s:%d]",
+            this, location.file(), location.line());
+  }
+  const size_t prev_size = size_.FetchAdd(1);
+  // The work serializer should not have been orphaned.
+  GPR_DEBUG_ASSERT(prev_size > 0);
+  if (prev_size == 1) {
+    // There is no other closure executing right now on this work serializer.
+    // Execute this closure immediately.
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+      gpr_log(GPR_INFO, "  Executing immediately");
+    }
+    callback();
+    // Loan this thread to the work serializer thread and drain the queue.
+    DrainQueue();
+  } else {
+    CallbackWrapper* cb_wrapper =
+        new CallbackWrapper(std::move(callback), location);
+    // There already are closures executing on this work serializer. Simply add
+    // this closure to the queue.
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+      gpr_log(GPR_INFO, "  Scheduling on queue : item %p", cb_wrapper);
+    }
+    queue_.Push(&cb_wrapper->mpscq_node);
+  }
+}
+
+void WorkSerializer::WorkSerializerImpl::Orphan() {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+    gpr_log(GPR_INFO, "WorkSerializer::Orphan() %p", this);
+  }
+  size_t prev_size = size_.FetchSub(1);
+  if (prev_size == 1) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+      gpr_log(GPR_INFO, "  Destroying");
+    }
+    delete this;
+  }
+}
+
+// The thread that calls this loans itself to the work serializer so as to
+// execute all the scheduled callback. This is called from within
+// WorkSerializer::Run() after executing a callback immediately, and hence size_
+// is at least 1.
+void WorkSerializer::WorkSerializerImpl::DrainQueue() {
+  while (true) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+      gpr_log(GPR_INFO, "WorkSerializer::DrainQueue() %p", this);
+    }
+    size_t prev_size = size_.FetchSub(1);
+    GPR_DEBUG_ASSERT(prev_size >= 1);
+    // It is possible that while draining the queue, one of the callbacks ended
+    // up orphaning the work serializer. In that case, delete the object.
+    if (prev_size == 1) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+        gpr_log(GPR_INFO, "  Queue Drained. Destroying");
+      }
+      delete this;
+      return;
+    }
+    if (prev_size == 2) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+        gpr_log(GPR_INFO, "  Queue Drained");
+      }
+      return;
+    }
+    // There is at least one callback on the queue. Pop the callback from the
+    // queue and execute it.
+    CallbackWrapper* cb_wrapper = nullptr;
+    bool empty_unused;
+    while ((cb_wrapper = reinterpret_cast<CallbackWrapper*>(
+                queue_.PopAndCheckEnd(&empty_unused))) == nullptr) {
+      // This can happen either due to a race condition within the mpscq
+      // implementation or because of a race with Run()
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+        gpr_log(GPR_INFO, "  Queue returned nullptr, trying again");
+      }
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_work_serializer_trace)) {
+      gpr_log(GPR_INFO, "  Running item %p : callback scheduled at [%s:%d]",
+              cb_wrapper, cb_wrapper->location.file(),
+              cb_wrapper->location.line());
+    }
+    cb_wrapper->callback();
+    delete cb_wrapper;
+  }
+}
+
+// WorkSerializer
+
+WorkSerializer::WorkSerializer()
+    : impl_(MakeOrphanable<WorkSerializerImpl>()) {}
+
+WorkSerializer::~WorkSerializer() {}
+
+void WorkSerializer::Run(std::function<void()> callback,
+                         const grpc_core::DebugLocation& location) {
+  impl_->Run(std::move(callback), location);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.h
new file mode 100644
index 0000000..169562d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/iomgr/work_serializer.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <functional>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/debug_location.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+#ifndef GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H
+#define GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H
+
+namespace grpc_core {
+
+// WorkSerializer is a mechanism to schedule callbacks in a synchronized manner.
+// All callbacks scheduled on a WorkSerializer instance will be executed
+// serially in a borrowed thread. The API provides a FIFO guarantee to the
+// execution of callbacks scheduled on the thread.
+// When a thread calls Run() with a callback, the thread is considered borrowed.
+// The callback might run inline, or it might run asynchronously in a different
+// thread that is already inside of Run(). If the callback runs directly inline,
+// other callbacks from other threads might also be executed before Run()
+// returns. Since an arbitrary set of callbacks might be executed when Run() is
+// called, generally no locks should be held while calling Run().
+class WorkSerializer {
+ public:
+  WorkSerializer();
+
+  ~WorkSerializer();
+
+  // TODO(yashkt): Replace grpc_core::DebugLocation with absl::SourceLocation
+  // once we can start using it directly.
+  void Run(std::function<void()> callback,
+           const grpc_core::DebugLocation& location);
+
+ private:
+  class WorkSerializerImpl;
+
+  OrphanablePtr<WorkSerializerImpl> impl_;
+};
+
+} /* namespace grpc_core */
+
+#endif /* GRPC_CORE_LIB_IOMGR_WORK_SERIALIZER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json.h
new file mode 100644
index 0000000..a949ae5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json.h	
@@ -0,0 +1,239 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_JSON_JSON_H
+#define GRPC_CORE_LIB_JSON_JSON_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/error.h"
+
+namespace grpc_core {
+
+// A JSON value, which can be any one of object, array, string,
+// number, true, false, or null.
+class Json {
+ public:
+  // TODO(roth): Currently, numbers are stored internally as strings,
+  // which makes the API a bit cumbersome to use. When we have time,
+  // consider whether there's a better alternative (e.g., maybe storing
+  // each numeric type as the native C++ type and automatically converting
+  // to string as needed).
+  enum class Type {
+    JSON_NULL,
+    JSON_TRUE,
+    JSON_FALSE,
+    NUMBER,
+    STRING,
+    OBJECT,
+    ARRAY
+  };
+
+  using Object = std::map<std::string, Json>;
+  using Array = std::vector<Json>;
+
+  // Parses JSON string from json_str.  On error, sets *error.
+  static Json Parse(StringView json_str, grpc_error** error);
+
+  Json() = default;
+
+  // Copyable.
+  Json(const Json& other) { CopyFrom(other); }
+  Json& operator=(const Json& other) {
+    CopyFrom(other);
+    return *this;
+  }
+
+  // Moveable.
+  Json(Json&& other) { MoveFrom(std::move(other)); }
+  Json& operator=(Json&& other) {
+    MoveFrom(std::move(other));
+    return *this;
+  }
+
+  // Construct from copying a string.
+  // If is_number is true, the type will be NUMBER instead of STRING.
+  Json(const std::string& string, bool is_number = false)
+      : type_(is_number ? Type::NUMBER : Type::STRING), string_value_(string) {}
+  Json& operator=(const std::string& string) {
+    type_ = Type::STRING;
+    string_value_ = string;
+    return *this;
+  }
+
+  // Same thing for C-style strings, both const and mutable.
+  Json(const char* string, bool is_number = false)
+      : Json(std::string(string), is_number) {}
+  Json& operator=(const char* string) {
+    *this = std::string(string);
+    return *this;
+  }
+  Json(char* string, bool is_number = false)
+      : Json(std::string(string), is_number) {}
+  Json& operator=(char* string) {
+    *this = std::string(string);
+    return *this;
+  }
+
+  // Construct by moving a string.
+  Json(std::string&& string)
+      : type_(Type::STRING), string_value_(std::move(string)) {}
+  Json& operator=(std::string&& string) {
+    type_ = Type::STRING;
+    string_value_ = std::move(string);
+    return *this;
+  }
+
+  // Construct from bool.
+  Json(bool b) : type_(b ? Type::JSON_TRUE : Type::JSON_FALSE) {}
+  Json& operator=(bool b) {
+    type_ = b ? Type::JSON_TRUE : Type::JSON_FALSE;
+    return *this;
+  }
+
+  // Construct from any numeric type.
+  template <typename NumericType>
+  Json(NumericType number)
+      : type_(Type::NUMBER), string_value_(std::to_string(number)) {}
+  template <typename NumericType>
+  Json& operator=(NumericType number) {
+    type_ = Type::NUMBER;
+    string_value_ = std::to_string(number);
+    return *this;
+  }
+
+  // Construct by copying object.
+  Json(const Object& object) : type_(Type::OBJECT), object_value_(object) {}
+  Json& operator=(const Object& object) {
+    type_ = Type::OBJECT;
+    object_value_ = object;
+    return *this;
+  }
+
+  // Construct by moving object.
+  Json(Object&& object)
+      : type_(Type::OBJECT), object_value_(std::move(object)) {}
+  Json& operator=(Object&& object) {
+    type_ = Type::OBJECT;
+    object_value_ = std::move(object);
+    return *this;
+  }
+
+  // Construct by copying array.
+  Json(const Array& array) : type_(Type::ARRAY), array_value_(array) {}
+  Json& operator=(const Array& array) {
+    type_ = Type::ARRAY;
+    array_value_ = array;
+    return *this;
+  }
+
+  // Construct by moving array.
+  Json(Array&& array) : type_(Type::ARRAY), array_value_(std::move(array)) {}
+  Json& operator=(Array&& array) {
+    type_ = Type::ARRAY;
+    array_value_ = std::move(array);
+    return *this;
+  }
+
+  // Dumps JSON from value to string form.
+  std::string Dump(int indent = 0) const;
+
+  // Accessor methods.
+  Type type() const { return type_; }
+  const std::string& string_value() const { return string_value_; }
+  std::string* mutable_string_value() { return &string_value_; }
+  const Object& object_value() const { return object_value_; }
+  Object* mutable_object() { return &object_value_; }
+  const Array& array_value() const { return array_value_; }
+  Array* mutable_array() { return &array_value_; }
+
+  bool operator==(const Json& other) const {
+    if (type_ != other.type_) return false;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        if (string_value_ != other.string_value_) return false;
+        break;
+      case Type::OBJECT:
+        if (object_value_ != other.object_value_) return false;
+        break;
+      case Type::ARRAY:
+        if (array_value_ != other.array_value_) return false;
+        break;
+      default:
+        break;
+    }
+    return true;
+  }
+
+  bool operator!=(const Json& other) const { return !(*this == other); }
+
+ private:
+  void CopyFrom(const Json& other) {
+    type_ = other.type_;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        string_value_ = other.string_value_;
+        break;
+      case Type::OBJECT:
+        object_value_ = other.object_value_;
+        break;
+      case Type::ARRAY:
+        array_value_ = other.array_value_;
+        break;
+      default:
+        break;
+    }
+  }
+
+  void MoveFrom(Json&& other) {
+    type_ = other.type_;
+    other.type_ = Type::JSON_NULL;
+    switch (type_) {
+      case Type::NUMBER:
+      case Type::STRING:
+        string_value_ = std::move(other.string_value_);
+        break;
+      case Type::OBJECT:
+        object_value_ = std::move(other.object_value_);
+        break;
+      case Type::ARRAY:
+        array_value_ = std::move(other.array_value_);
+        break;
+      default:
+        break;
+    }
+  }
+
+  Type type_ = Type::JSON_NULL;
+  std::string string_value_;
+  Object object_value_;
+  Array array_value_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_JSON_JSON_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_reader.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_reader.cc
new file mode 100644
index 0000000..5667f03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_reader.cc	
@@ -0,0 +1,855 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/json/json.h"
+
+#define GRPC_JSON_MAX_DEPTH 255
+#define GRPC_JSON_MAX_ERRORS 16
+
+namespace grpc_core {
+
+namespace {
+
+class JsonReader {
+ public:
+  static grpc_error* Parse(StringView input, Json* output);
+
+ private:
+  enum class Status {
+    GRPC_JSON_DONE,          /* The parser finished successfully. */
+    GRPC_JSON_PARSE_ERROR,   /* The parser found an error in the json stream. */
+    GRPC_JSON_INTERNAL_ERROR /* The parser got an internal error. */
+  };
+
+  enum class State {
+    GRPC_JSON_STATE_OBJECT_KEY_BEGIN,
+    GRPC_JSON_STATE_OBJECT_KEY_STRING,
+    GRPC_JSON_STATE_OBJECT_KEY_END,
+    GRPC_JSON_STATE_VALUE_BEGIN,
+    GRPC_JSON_STATE_VALUE_STRING,
+    GRPC_JSON_STATE_STRING_ESCAPE,
+    GRPC_JSON_STATE_STRING_ESCAPE_U1,
+    GRPC_JSON_STATE_STRING_ESCAPE_U2,
+    GRPC_JSON_STATE_STRING_ESCAPE_U3,
+    GRPC_JSON_STATE_STRING_ESCAPE_U4,
+    GRPC_JSON_STATE_VALUE_NUMBER,
+    GRPC_JSON_STATE_VALUE_NUMBER_WITH_DECIMAL,
+    GRPC_JSON_STATE_VALUE_NUMBER_ZERO,
+    GRPC_JSON_STATE_VALUE_NUMBER_DOT,
+    GRPC_JSON_STATE_VALUE_NUMBER_E,
+    GRPC_JSON_STATE_VALUE_NUMBER_EPM,
+    GRPC_JSON_STATE_VALUE_TRUE_R,
+    GRPC_JSON_STATE_VALUE_TRUE_U,
+    GRPC_JSON_STATE_VALUE_TRUE_E,
+    GRPC_JSON_STATE_VALUE_FALSE_A,
+    GRPC_JSON_STATE_VALUE_FALSE_L,
+    GRPC_JSON_STATE_VALUE_FALSE_S,
+    GRPC_JSON_STATE_VALUE_FALSE_E,
+    GRPC_JSON_STATE_VALUE_NULL_U,
+    GRPC_JSON_STATE_VALUE_NULL_L1,
+    GRPC_JSON_STATE_VALUE_NULL_L2,
+    GRPC_JSON_STATE_VALUE_END,
+    GRPC_JSON_STATE_END
+  };
+
+  /* The first non-unicode value is 0x110000. But let's pick
+   * a value high enough to start our error codes from. These
+   * values are safe to return from the read_char function.
+   */
+  static constexpr uint32_t GRPC_JSON_READ_CHAR_EOF = 0x7ffffff0;
+
+  explicit JsonReader(StringView input)
+      : original_input_(reinterpret_cast<const uint8_t*>(input.data())),
+        input_(original_input_),
+        remaining_input_(input.size()) {}
+
+  Status Run();
+  uint32_t ReadChar();
+  bool IsComplete();
+
+  size_t CurrentIndex() const { return input_ - original_input_ - 1; }
+
+  void StringAddChar(uint32_t c);
+  void StringAddUtf32(uint32_t c);
+
+  Json* CreateAndLinkValue();
+  bool StartContainer(Json::Type type);
+  void EndContainer();
+  void SetKey();
+  void SetString();
+  bool SetNumber();
+  void SetTrue();
+  void SetFalse();
+  void SetNull();
+
+  const uint8_t* original_input_;
+  const uint8_t* input_;
+  size_t remaining_input_;
+
+  State state_ = State::GRPC_JSON_STATE_VALUE_BEGIN;
+  bool escaped_string_was_key_ = false;
+  bool container_just_begun_ = false;
+  uint16_t unicode_char_ = 0;
+  uint16_t unicode_high_surrogate_ = 0;
+  std::vector<grpc_error*> errors_;
+  bool truncated_errors_ = false;
+
+  Json root_value_;
+  std::vector<Json*> stack_;
+
+  std::string key_;
+  std::string string_;
+};
+
+void JsonReader::StringAddChar(uint32_t c) {
+  string_.push_back(static_cast<uint8_t>(c));
+}
+
+void JsonReader::StringAddUtf32(uint32_t c) {
+  if (c <= 0x7f) {
+    StringAddChar(c);
+  } else if (c <= 0x7ff) {
+    uint32_t b1 = 0xc0 | ((c >> 6) & 0x1f);
+    uint32_t b2 = 0x80 | (c & 0x3f);
+    StringAddChar(b1);
+    StringAddChar(b2);
+  } else if (c <= 0xffff) {
+    uint32_t b1 = 0xe0 | ((c >> 12) & 0x0f);
+    uint32_t b2 = 0x80 | ((c >> 6) & 0x3f);
+    uint32_t b3 = 0x80 | (c & 0x3f);
+    StringAddChar(b1);
+    StringAddChar(b2);
+    StringAddChar(b3);
+  } else if (c <= 0x1fffff) {
+    uint32_t b1 = 0xf0 | ((c >> 18) & 0x07);
+    uint32_t b2 = 0x80 | ((c >> 12) & 0x3f);
+    uint32_t b3 = 0x80 | ((c >> 6) & 0x3f);
+    uint32_t b4 = 0x80 | (c & 0x3f);
+    StringAddChar(b1);
+    StringAddChar(b2);
+    StringAddChar(b3);
+    StringAddChar(b4);
+  }
+}
+
+uint32_t JsonReader::ReadChar() {
+  if (remaining_input_ == 0) return GRPC_JSON_READ_CHAR_EOF;
+  const uint32_t r = *input_++;
+  --remaining_input_;
+  if (r == 0) {
+    remaining_input_ = 0;
+    return GRPC_JSON_READ_CHAR_EOF;
+  }
+  return r;
+}
+
+Json* JsonReader::CreateAndLinkValue() {
+  Json* value;
+  if (stack_.empty()) {
+    value = &root_value_;
+  } else {
+    Json* parent = stack_.back();
+    if (parent->type() == Json::Type::OBJECT) {
+      if (parent->object_value().find(key_) != parent->object_value().end()) {
+        if (errors_.size() == GRPC_JSON_MAX_ERRORS) {
+          truncated_errors_ = true;
+        } else {
+          char* msg;
+          gpr_asprintf(&msg, "duplicate key \"%s\" at index %" PRIuPTR,
+                       key_.c_str(), CurrentIndex());
+          errors_.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+          gpr_free(msg);
+        }
+      }
+      value = &(*parent->mutable_object())[std::move(key_)];
+    } else {
+      GPR_ASSERT(parent->type() == Json::Type::ARRAY);
+      parent->mutable_array()->emplace_back();
+      value = &parent->mutable_array()->back();
+    }
+  }
+  return value;
+}
+
+bool JsonReader::StartContainer(Json::Type type) {
+  if (stack_.size() == GRPC_JSON_MAX_DEPTH) {
+    if (errors_.size() == GRPC_JSON_MAX_ERRORS) {
+      truncated_errors_ = true;
+    } else {
+      char* msg;
+      gpr_asprintf(&msg, "exceeded max stack depth (%d) at index %" PRIuPTR,
+                   GRPC_JSON_MAX_DEPTH, CurrentIndex());
+      errors_.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+      gpr_free(msg);
+    }
+    return false;
+  }
+  Json* value = CreateAndLinkValue();
+  if (type == Json::Type::OBJECT) {
+    *value = Json::Object();
+  } else {
+    GPR_ASSERT(type == Json::Type::ARRAY);
+    *value = Json::Array();
+  }
+  stack_.push_back(value);
+  return true;
+}
+
+void JsonReader::EndContainer() {
+  GPR_ASSERT(!stack_.empty());
+  stack_.pop_back();
+}
+
+void JsonReader::SetKey() {
+  key_ = std::move(string_);
+  string_.clear();
+}
+
+void JsonReader::SetString() {
+  Json* value = CreateAndLinkValue();
+  *value = std::move(string_);
+  string_.clear();
+}
+
+bool JsonReader::SetNumber() {
+  Json* value = CreateAndLinkValue();
+  *value = Json(std::move(string_), /*is_number=*/true);
+  string_.clear();
+  return true;
+}
+
+void JsonReader::SetTrue() {
+  Json* value = CreateAndLinkValue();
+  *value = true;
+  string_.clear();
+}
+
+void JsonReader::SetFalse() {
+  Json* value = CreateAndLinkValue();
+  *value = false;
+  string_.clear();
+}
+
+void JsonReader::SetNull() { CreateAndLinkValue(); }
+
+bool JsonReader::IsComplete() {
+  return (stack_.empty() && (state_ == State::GRPC_JSON_STATE_END ||
+                             state_ == State::GRPC_JSON_STATE_VALUE_END));
+}
+
+/* Call this function to start parsing the input. It will return the following:
+ *    . GRPC_JSON_DONE if the input got eof, and the parsing finished
+ *      successfully.
+ *    . GRPC_JSON_PARSE_ERROR if the input was somehow invalid.
+ *    . GRPC_JSON_INTERNAL_ERROR if the parser somehow ended into an invalid
+ *      internal state.
+ */
+JsonReader::Status JsonReader::Run() {
+  uint32_t c;
+
+  /* This state-machine is a strict implementation of ECMA-404 */
+  while (true) {
+    c = ReadChar();
+    switch (c) {
+      /* Let's process the error case first. */
+      case GRPC_JSON_READ_CHAR_EOF:
+        if (IsComplete()) {
+          return Status::GRPC_JSON_DONE;
+        } else {
+          return Status::GRPC_JSON_PARSE_ERROR;
+        }
+        break;
+
+      /* Processing whitespaces. */
+      case ' ':
+      case '\t':
+      case '\n':
+      case '\r':
+        switch (state_) {
+          case State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN:
+          case State::GRPC_JSON_STATE_OBJECT_KEY_END:
+          case State::GRPC_JSON_STATE_VALUE_BEGIN:
+          case State::GRPC_JSON_STATE_VALUE_END:
+          case State::GRPC_JSON_STATE_END:
+            break;
+
+          case State::GRPC_JSON_STATE_OBJECT_KEY_STRING:
+          case State::GRPC_JSON_STATE_VALUE_STRING:
+            if (c != ' ') return Status::GRPC_JSON_PARSE_ERROR;
+            if (unicode_high_surrogate_ != 0) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            StringAddChar(c);
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_WITH_DECIMAL:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_ZERO:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_EPM:
+            if (!SetNumber()) return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_END;
+            break;
+
+          default:
+            return Status::GRPC_JSON_PARSE_ERROR;
+        }
+        break;
+
+      /* Value, object or array terminations. */
+      case ',':
+      case '}':
+      case ']':
+        switch (state_) {
+          case State::GRPC_JSON_STATE_OBJECT_KEY_STRING:
+          case State::GRPC_JSON_STATE_VALUE_STRING:
+            if (unicode_high_surrogate_ != 0) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            StringAddChar(c);
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_WITH_DECIMAL:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_ZERO:
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_EPM:
+            if (stack_.empty()) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            } else if (c == '}' &&
+                       stack_.back()->type() != Json::Type::OBJECT) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+              return Status::GRPC_JSON_PARSE_ERROR;
+            } else if (c == ']' && stack_.back()->type() != Json::Type::ARRAY) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            if (!SetNumber()) return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_END;
+            /* The missing break here is intentional. */
+            /* fallthrough */
+
+          case State::GRPC_JSON_STATE_VALUE_END:
+          case State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN:
+          case State::GRPC_JSON_STATE_VALUE_BEGIN:
+            if (c == ',') {
+              if (state_ != State::GRPC_JSON_STATE_VALUE_END) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              if (!stack_.empty() &&
+                  stack_.back()->type() == Json::Type::OBJECT) {
+                state_ = State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN;
+              } else if (!stack_.empty() &&
+                         stack_.back()->type() == Json::Type::ARRAY) {
+                state_ = State::GRPC_JSON_STATE_VALUE_BEGIN;
+              } else {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+            } else {
+              if (stack_.empty()) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              if (c == '}' && stack_.back()->type() != Json::Type::OBJECT) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              if (c == '}' &&
+                  state_ == State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN &&
+                  !container_just_begun_) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              if (c == ']' && stack_.back()->type() != Json::Type::ARRAY) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              if (c == ']' && state_ == State::GRPC_JSON_STATE_VALUE_BEGIN &&
+                  !container_just_begun_) {
+                return Status::GRPC_JSON_PARSE_ERROR;
+              }
+              state_ = State::GRPC_JSON_STATE_VALUE_END;
+              EndContainer();
+              if (stack_.empty()) {
+                state_ = State::GRPC_JSON_STATE_END;
+              }
+            }
+            break;
+
+          default:
+            return Status::GRPC_JSON_PARSE_ERROR;
+        }
+        break;
+
+      /* In-string escaping. */
+      case '\\':
+        switch (state_) {
+          case State::GRPC_JSON_STATE_OBJECT_KEY_STRING:
+            escaped_string_was_key_ = true;
+            state_ = State::GRPC_JSON_STATE_STRING_ESCAPE;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_STRING:
+            escaped_string_was_key_ = false;
+            state_ = State::GRPC_JSON_STATE_STRING_ESCAPE;
+            break;
+
+          /* This is the \\ case. */
+          case State::GRPC_JSON_STATE_STRING_ESCAPE:
+            if (unicode_high_surrogate_ != 0)
+              return Status::GRPC_JSON_PARSE_ERROR;
+            StringAddChar('\\');
+            if (escaped_string_was_key_) {
+              state_ = State::GRPC_JSON_STATE_OBJECT_KEY_STRING;
+            } else {
+              state_ = State::GRPC_JSON_STATE_VALUE_STRING;
+            }
+            break;
+
+          default:
+            return Status::GRPC_JSON_PARSE_ERROR;
+        }
+        break;
+
+      default:
+        container_just_begun_ = false;
+        switch (state_) {
+          case State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN:
+            if (c != '"') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_OBJECT_KEY_STRING;
+            break;
+
+          case State::GRPC_JSON_STATE_OBJECT_KEY_STRING:
+            if (unicode_high_surrogate_ != 0) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            if (c == '"') {
+              state_ = State::GRPC_JSON_STATE_OBJECT_KEY_END;
+              SetKey();
+            } else {
+              if (c < 32) return Status::GRPC_JSON_PARSE_ERROR;
+              StringAddChar(c);
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_STRING:
+            if (unicode_high_surrogate_ != 0) {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            if (c == '"') {
+              state_ = State::GRPC_JSON_STATE_VALUE_END;
+              SetString();
+            } else {
+              if (c < 32) return Status::GRPC_JSON_PARSE_ERROR;
+              StringAddChar(c);
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_OBJECT_KEY_END:
+            if (c != ':') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_BEGIN;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_BEGIN:
+            switch (c) {
+              case 't':
+                state_ = State::GRPC_JSON_STATE_VALUE_TRUE_R;
+                break;
+
+              case 'f':
+                state_ = State::GRPC_JSON_STATE_VALUE_FALSE_A;
+                break;
+
+              case 'n':
+                state_ = State::GRPC_JSON_STATE_VALUE_NULL_U;
+                break;
+
+              case '"':
+                state_ = State::GRPC_JSON_STATE_VALUE_STRING;
+                break;
+
+              case '0':
+                StringAddChar(c);
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_ZERO;
+                break;
+
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+              case '-':
+                StringAddChar(c);
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER;
+                break;
+
+              case '{':
+                container_just_begun_ = true;
+                if (!StartContainer(Json::Type::OBJECT)) {
+                  return Status::GRPC_JSON_PARSE_ERROR;
+                }
+                state_ = State::GRPC_JSON_STATE_OBJECT_KEY_BEGIN;
+                break;
+
+              case '[':
+                container_just_begun_ = true;
+                if (!StartContainer(Json::Type::ARRAY)) {
+                  return Status::GRPC_JSON_PARSE_ERROR;
+                }
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_STRING_ESCAPE:
+            if (escaped_string_was_key_) {
+              state_ = State::GRPC_JSON_STATE_OBJECT_KEY_STRING;
+            } else {
+              state_ = State::GRPC_JSON_STATE_VALUE_STRING;
+            }
+            if (unicode_high_surrogate_ && c != 'u') {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            switch (c) {
+              case '"':
+              case '/':
+                StringAddChar(c);
+                break;
+              case 'b':
+                StringAddChar('\b');
+                break;
+              case 'f':
+                StringAddChar('\f');
+                break;
+              case 'n':
+                StringAddChar('\n');
+                break;
+              case 'r':
+                StringAddChar('\r');
+                break;
+              case 't':
+                StringAddChar('\t');
+                break;
+              case 'u':
+                state_ = State::GRPC_JSON_STATE_STRING_ESCAPE_U1;
+                unicode_char_ = 0;
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_STRING_ESCAPE_U1:
+          case State::GRPC_JSON_STATE_STRING_ESCAPE_U2:
+          case State::GRPC_JSON_STATE_STRING_ESCAPE_U3:
+          case State::GRPC_JSON_STATE_STRING_ESCAPE_U4:
+            if ((c >= '0') && (c <= '9')) {
+              c -= '0';
+            } else if ((c >= 'A') && (c <= 'F')) {
+              c -= 'A' - 10;
+            } else if ((c >= 'a') && (c <= 'f')) {
+              c -= 'a' - 10;
+            } else {
+              return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            unicode_char_ = static_cast<uint16_t>(unicode_char_ << 4);
+            unicode_char_ = static_cast<uint16_t>(unicode_char_ | c);
+
+            switch (state_) {
+              case State::GRPC_JSON_STATE_STRING_ESCAPE_U1:
+                state_ = State::GRPC_JSON_STATE_STRING_ESCAPE_U2;
+                break;
+              case State::GRPC_JSON_STATE_STRING_ESCAPE_U2:
+                state_ = State::GRPC_JSON_STATE_STRING_ESCAPE_U3;
+                break;
+              case State::GRPC_JSON_STATE_STRING_ESCAPE_U3:
+                state_ = State::GRPC_JSON_STATE_STRING_ESCAPE_U4;
+                break;
+              case State::GRPC_JSON_STATE_STRING_ESCAPE_U4:
+                /* See grpc_json_writer_escape_string to have a description
+                 * of what's going on here.
+                 */
+                if ((unicode_char_ & 0xfc00) == 0xd800) {
+                  /* high surrogate utf-16 */
+                  if (unicode_high_surrogate_ != 0)
+                    return Status::GRPC_JSON_PARSE_ERROR;
+                  unicode_high_surrogate_ = unicode_char_;
+                } else if ((unicode_char_ & 0xfc00) == 0xdc00) {
+                  /* low surrogate utf-16 */
+                  uint32_t utf32;
+                  if (unicode_high_surrogate_ == 0)
+                    return Status::GRPC_JSON_PARSE_ERROR;
+                  utf32 = 0x10000;
+                  utf32 += static_cast<uint32_t>(
+                      (unicode_high_surrogate_ - 0xd800) * 0x400);
+                  utf32 += static_cast<uint32_t>(unicode_char_ - 0xdc00);
+                  StringAddUtf32(utf32);
+                  unicode_high_surrogate_ = 0;
+                } else {
+                  /* anything else */
+                  if (unicode_high_surrogate_ != 0)
+                    return Status::GRPC_JSON_PARSE_ERROR;
+                  StringAddUtf32(unicode_char_);
+                }
+                if (escaped_string_was_key_) {
+                  state_ = State::GRPC_JSON_STATE_OBJECT_KEY_STRING;
+                } else {
+                  state_ = State::GRPC_JSON_STATE_VALUE_STRING;
+                }
+                break;
+              default:
+                GPR_UNREACHABLE_CODE(return Status::GRPC_JSON_INTERNAL_ERROR);
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER:
+            StringAddChar(c);
+            switch (c) {
+              case '0':
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+                break;
+              case 'e':
+              case 'E':
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_E;
+                break;
+              case '.':
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_DOT;
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_WITH_DECIMAL:
+            StringAddChar(c);
+            switch (c) {
+              case '0':
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+                break;
+              case 'e':
+              case 'E':
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_E;
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_ZERO:
+            if (c != '.') return Status::GRPC_JSON_PARSE_ERROR;
+            StringAddChar(c);
+            state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_DOT;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_DOT:
+            StringAddChar(c);
+            switch (c) {
+              case '0':
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_WITH_DECIMAL;
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_E:
+            StringAddChar(c);
+            switch (c) {
+              case '0':
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+              case '+':
+              case '-':
+                state_ = State::GRPC_JSON_STATE_VALUE_NUMBER_EPM;
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NUMBER_EPM:
+            StringAddChar(c);
+            switch (c) {
+              case '0':
+              case '1':
+              case '2':
+              case '3':
+              case '4':
+              case '5':
+              case '6':
+              case '7':
+              case '8':
+              case '9':
+                break;
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_TRUE_R:
+            if (c != 'r') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_TRUE_U;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_TRUE_U:
+            if (c != 'u') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_TRUE_E;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_TRUE_E:
+            if (c != 'e') return Status::GRPC_JSON_PARSE_ERROR;
+            SetTrue();
+            state_ = State::GRPC_JSON_STATE_VALUE_END;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_FALSE_A:
+            if (c != 'a') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_FALSE_L;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_FALSE_L:
+            if (c != 'l') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_FALSE_S;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_FALSE_S:
+            if (c != 's') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_FALSE_E;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_FALSE_E:
+            if (c != 'e') return Status::GRPC_JSON_PARSE_ERROR;
+            SetFalse();
+            state_ = State::GRPC_JSON_STATE_VALUE_END;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NULL_U:
+            if (c != 'u') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_NULL_L1;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NULL_L1:
+            if (c != 'l') return Status::GRPC_JSON_PARSE_ERROR;
+            state_ = State::GRPC_JSON_STATE_VALUE_NULL_L2;
+            break;
+
+          case State::GRPC_JSON_STATE_VALUE_NULL_L2:
+            if (c != 'l') return Status::GRPC_JSON_PARSE_ERROR;
+            SetNull();
+            state_ = State::GRPC_JSON_STATE_VALUE_END;
+            break;
+
+          /* All of the VALUE_END cases are handled in the specialized case
+           * above. */
+          case State::GRPC_JSON_STATE_VALUE_END:
+            switch (c) {
+              case ',':
+              case '}':
+              case ']':
+                GPR_UNREACHABLE_CODE(return Status::GRPC_JSON_INTERNAL_ERROR);
+                break;
+
+              default:
+                return Status::GRPC_JSON_PARSE_ERROR;
+            }
+            break;
+
+          case State::GRPC_JSON_STATE_END:
+            return Status::GRPC_JSON_PARSE_ERROR;
+        }
+    }
+  }
+
+  GPR_UNREACHABLE_CODE(return Status::GRPC_JSON_INTERNAL_ERROR);
+}
+
+grpc_error* JsonReader::Parse(StringView input, Json* output) {
+  JsonReader reader(input);
+  Status status = reader.Run();
+  if (reader.truncated_errors_) {
+    reader.errors_.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "too many errors encountered during JSON parsing -- fix reported "
+        "errors and try again to see additional errors"));
+  }
+  if (status == Status::GRPC_JSON_INTERNAL_ERROR) {
+    char* msg;
+    gpr_asprintf(&msg, "internal error in JSON parser at index %" PRIuPTR,
+                 reader.CurrentIndex());
+    reader.errors_.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+    gpr_free(msg);
+  } else if (status == Status::GRPC_JSON_PARSE_ERROR) {
+    char* msg;
+    gpr_asprintf(&msg, "JSON parse error at index %" PRIuPTR,
+                 reader.CurrentIndex());
+    reader.errors_.push_back(GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg));
+    gpr_free(msg);
+  }
+  if (!reader.errors_.empty()) {
+    return GRPC_ERROR_CREATE_FROM_VECTOR("JSON parsing failed",
+                                         &reader.errors_);
+  }
+  *output = std::move(reader.root_value_);
+  return GRPC_ERROR_NONE;
+}
+
+}  // namespace
+
+Json Json::Parse(StringView json_str, grpc_error** error) {
+  Json value;
+  *error = JsonReader::Parse(json_str, &value);
+  return value;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_writer.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_writer.cc
new file mode 100644
index 0000000..3f37190
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/json/json_writer.cc	
@@ -0,0 +1,336 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/json/json.h"
+
+#include "src/core/lib/gprpp/string_view.h"
+
+namespace grpc_core {
+
+namespace {
+
+/* The idea of the writer is basically symmetrical of the reader. While the
+ * reader emits various calls to your code, the writer takes basically the
+ * same calls and emit json out of it. It doesn't try to make any check on
+ * the order of the calls you do on it. Meaning you can theorically force
+ * it to generate invalid json.
+ *
+ * Also, unlike the reader, the writer expects UTF-8 encoded input strings.
+ * These strings will be UTF-8 validated, and any invalid character will
+ * cut the conversion short, before any invalid UTF-8 sequence, thus forming
+ * a valid UTF-8 string overall.
+ */
+class JsonWriter {
+ public:
+  static std::string Dump(const Json& value, int indent);
+
+ private:
+  explicit JsonWriter(int indent) : indent_(indent) {}
+
+  void OutputCheck(size_t needed);
+  void OutputChar(char c);
+  void OutputString(const StringView str);
+  void OutputIndent();
+  void ValueEnd();
+  void EscapeUtf16(uint16_t utf16);
+  void EscapeString(const std::string& string);
+  void ContainerBegins(Json::Type type);
+  void ContainerEnds(Json::Type type);
+  void ObjectKey(const std::string& string);
+  void ValueRaw(const std::string& string);
+  void ValueString(const std::string& string);
+
+  void DumpObject(const Json::Object& object);
+  void DumpArray(const Json::Array& array);
+  void DumpValue(const Json& value);
+
+  int indent_;
+  int depth_ = 0;
+  bool container_empty_ = true;
+  bool got_key_ = false;
+  std::string output_;
+};
+
+/* This function checks if there's enough space left in the output buffer,
+ * and will enlarge it if necessary. We're only allocating chunks of 256
+ * bytes at a time (or multiples thereof).
+ */
+void JsonWriter::OutputCheck(size_t needed) {
+  size_t free_space = output_.capacity() - output_.size();
+  if (free_space >= needed) return;
+  needed -= free_space;
+  /* Round up by 256 bytes. */
+  needed = (needed + 0xff) & ~0xffU;
+  output_.reserve(output_.capacity() + needed);
+}
+
+void JsonWriter::OutputChar(char c) {
+  OutputCheck(1);
+  output_.push_back(c);
+}
+
+void JsonWriter::OutputString(const StringView str) {
+  OutputCheck(str.size());
+  output_.append(str.data(), str.size());
+}
+
+void JsonWriter::OutputIndent() {
+  static const char spacesstr[] =
+      "                "
+      "                "
+      "                "
+      "                ";
+  unsigned spaces = static_cast<unsigned>(depth_ * indent_);
+  if (indent_ == 0) return;
+  if (got_key_) {
+    OutputChar(' ');
+    return;
+  }
+  while (spaces >= (sizeof(spacesstr) - 1)) {
+    OutputString(StringView(spacesstr, sizeof(spacesstr) - 1));
+    spaces -= static_cast<unsigned>(sizeof(spacesstr) - 1);
+  }
+  if (spaces == 0) return;
+  OutputString(StringView(spacesstr + sizeof(spacesstr) - 1 - spaces, spaces));
+}
+
+void JsonWriter::ValueEnd() {
+  if (container_empty_) {
+    container_empty_ = false;
+    if (indent_ == 0 || depth_ == 0) return;
+    OutputChar('\n');
+  } else {
+    OutputChar(',');
+    if (indent_ == 0) return;
+    OutputChar('\n');
+  }
+}
+
+void JsonWriter::EscapeUtf16(uint16_t utf16) {
+  static const char hex[] = "0123456789abcdef";
+  OutputString(StringView("\\u", 2));
+  OutputChar(hex[(utf16 >> 12) & 0x0f]);
+  OutputChar(hex[(utf16 >> 8) & 0x0f]);
+  OutputChar(hex[(utf16 >> 4) & 0x0f]);
+  OutputChar(hex[(utf16)&0x0f]);
+}
+
+void JsonWriter::EscapeString(const std::string& string) {
+  OutputChar('"');
+  for (size_t idx = 0; idx < string.size(); ++idx) {
+    uint8_t c = static_cast<uint8_t>(string[idx]);
+    if (c == 0) {
+      break;
+    } else if (c >= 32 && c <= 126) {
+      if (c == '\\' || c == '"') OutputChar('\\');
+      OutputChar(static_cast<char>(c));
+    } else if (c < 32 || c == 127) {
+      switch (c) {
+        case '\b':
+          OutputString(StringView("\\b", 2));
+          break;
+        case '\f':
+          OutputString(StringView("\\f", 2));
+          break;
+        case '\n':
+          OutputString(StringView("\\n", 2));
+          break;
+        case '\r':
+          OutputString(StringView("\\r", 2));
+          break;
+        case '\t':
+          OutputString(StringView("\\t", 2));
+          break;
+        default:
+          EscapeUtf16(c);
+          break;
+      }
+    } else {
+      uint32_t utf32 = 0;
+      int extra = 0;
+      int i;
+      int valid = 1;
+      if ((c & 0xe0) == 0xc0) {
+        utf32 = c & 0x1f;
+        extra = 1;
+      } else if ((c & 0xf0) == 0xe0) {
+        utf32 = c & 0x0f;
+        extra = 2;
+      } else if ((c & 0xf8) == 0xf0) {
+        utf32 = c & 0x07;
+        extra = 3;
+      } else {
+        break;
+      }
+      for (i = 0; i < extra; i++) {
+        utf32 <<= 6;
+        ++idx;
+        /* Breaks out and bail if we hit the end of the string. */
+        if (idx == string.size()) {
+          valid = 0;
+          break;
+        }
+        c = static_cast<uint8_t>(string[idx]);
+        /* Breaks out and bail on any invalid UTF-8 sequence, including \0. */
+        if ((c & 0xc0) != 0x80) {
+          valid = 0;
+          break;
+        }
+        utf32 |= c & 0x3f;
+      }
+      if (!valid) break;
+      /* The range 0xd800 - 0xdfff is reserved by the surrogates ad vitam.
+       * Any other range is technically reserved for future usage, so if we
+       * don't want the software to break in the future, we have to allow
+       * anything else. The first non-unicode character is 0x110000. */
+      if (((utf32 >= 0xd800) && (utf32 <= 0xdfff)) || (utf32 >= 0x110000))
+        break;
+      if (utf32 >= 0x10000) {
+        /* If utf32 contains a character that is above 0xffff, it needs to be
+         * broken down into a utf-16 surrogate pair. A surrogate pair is first
+         * a high surrogate, followed by a low surrogate. Each surrogate holds
+         * 10 bits of usable data, thus allowing a total of 20 bits of data.
+         * The high surrogate marker is 0xd800, while the low surrogate marker
+         * is 0xdc00. The low 10 bits of each will be the usable data.
+         *
+         * After re-combining the 20 bits of data, one has to add 0x10000 to
+         * the resulting value, in order to obtain the original character.
+         * This is obviously because the range 0x0000 - 0xffff can be written
+         * without any special trick.
+         *
+         * Since 0x10ffff is the highest allowed character, we're working in
+         * the range 0x00000 - 0xfffff after we decrement it by 0x10000.
+         * That range is exactly 20 bits.
+         */
+        utf32 -= 0x10000;
+        EscapeUtf16(static_cast<uint16_t>(0xd800 | (utf32 >> 10)));
+        EscapeUtf16(static_cast<uint16_t>(0xdc00 | (utf32 & 0x3ff)));
+      } else {
+        EscapeUtf16(static_cast<uint16_t>(utf32));
+      }
+    }
+  }
+  OutputChar('"');
+}
+
+void JsonWriter::ContainerBegins(Json::Type type) {
+  if (!got_key_) ValueEnd();
+  OutputIndent();
+  OutputChar(type == Json::Type::OBJECT ? '{' : '[');
+  container_empty_ = true;
+  got_key_ = false;
+  depth_++;
+}
+
+void JsonWriter::ContainerEnds(Json::Type type) {
+  if (indent_ && !container_empty_) OutputChar('\n');
+  depth_--;
+  if (!container_empty_) OutputIndent();
+  OutputChar(type == Json::Type::OBJECT ? '}' : ']');
+  container_empty_ = false;
+  got_key_ = false;
+}
+
+void JsonWriter::ObjectKey(const std::string& string) {
+  ValueEnd();
+  OutputIndent();
+  EscapeString(string);
+  OutputChar(':');
+  got_key_ = true;
+}
+
+void JsonWriter::ValueRaw(const std::string& string) {
+  if (!got_key_) ValueEnd();
+  OutputIndent();
+  OutputString(string);
+  got_key_ = false;
+}
+
+void JsonWriter::ValueString(const std::string& string) {
+  if (!got_key_) ValueEnd();
+  OutputIndent();
+  EscapeString(string);
+  got_key_ = false;
+}
+
+void JsonWriter::DumpObject(const Json::Object& object) {
+  ContainerBegins(Json::Type::OBJECT);
+  for (const auto& p : object) {
+    ObjectKey(p.first.data());
+    DumpValue(p.second);
+  }
+  ContainerEnds(Json::Type::OBJECT);
+}
+
+void JsonWriter::DumpArray(const Json::Array& array) {
+  ContainerBegins(Json::Type::ARRAY);
+  for (const auto& v : array) {
+    DumpValue(v);
+  }
+  ContainerEnds(Json::Type::ARRAY);
+}
+
+void JsonWriter::DumpValue(const Json& value) {
+  switch (value.type()) {
+    case Json::Type::OBJECT:
+      DumpObject(value.object_value());
+      break;
+    case Json::Type::ARRAY:
+      DumpArray(value.array_value());
+      break;
+    case Json::Type::STRING:
+      ValueString(value.string_value());
+      break;
+    case Json::Type::NUMBER:
+      ValueRaw(value.string_value());
+      break;
+    case Json::Type::JSON_TRUE:
+      ValueRaw(std::string("true", 4));
+      break;
+    case Json::Type::JSON_FALSE:
+      ValueRaw(std::string("false", 5));
+      break;
+    case Json::Type::JSON_NULL:
+      ValueRaw(std::string("null", 4));
+      break;
+    default:
+      GPR_UNREACHABLE_CODE(abort());
+  }
+}
+
+std::string JsonWriter::Dump(const Json& value, int indent) {
+  JsonWriter writer(indent);
+  writer.DumpValue(value);
+  return std::move(writer.output_);
+}
+
+}  // namespace
+
+std::string Json::Dump(int indent) const {
+  return JsonWriter::Dump(*this, indent);
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/basic_timers.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/basic_timers.cc
new file mode 100644
index 0000000..2056940
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/basic_timers.cc	
@@ -0,0 +1,293 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/profiling/timers.h"
+
+#ifdef GRPC_BASIC_PROFILER
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/profiling/timers.h"
+
+typedef enum { BEGIN = '{', END = '}', MARK = '.' } marker_type;
+
+typedef struct gpr_timer_entry {
+  gpr_timespec tm;
+  const char* tagstr;
+  const char* file;
+  short line;
+  char type;
+  uint8_t important;
+  int thd;
+} gpr_timer_entry;
+
+#define MAX_COUNT 1000000
+
+typedef struct gpr_timer_log {
+  size_t num_entries;
+  struct gpr_timer_log* next;
+  struct gpr_timer_log* prev;
+  gpr_timer_entry log[MAX_COUNT];
+} gpr_timer_log;
+
+typedef struct gpr_timer_log_list {
+  gpr_timer_log* head;
+  /* valid iff head!=NULL */
+  gpr_timer_log* tail;
+} gpr_timer_log_list;
+
+static __thread gpr_timer_log* g_thread_log;
+static gpr_once g_once_init = GPR_ONCE_INIT;
+static FILE* output_file;
+static const char* output_filename_or_null = NULL;
+static pthread_mutex_t g_mu;
+static pthread_cond_t g_cv;
+static gpr_timer_log_list g_in_progress_logs;
+static gpr_timer_log_list g_done_logs;
+static int g_shutdown;
+static pthread_t g_writing_thread;
+static __thread int g_thread_id;
+static int g_next_thread_id;
+static int g_writing_enabled = 1;
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(grpc_latency_trace, "latency_trace.txt",
+                                "Output file name for latency trace")
+
+static const char* output_filename() {
+  if (output_filename_or_null == NULL) {
+    grpc_core::UniquePtr<char> value =
+        GPR_GLOBAL_CONFIG_GET(grpc_latency_trace);
+    if (strlen(value.get()) > 0) {
+      output_filename_or_null = value.release();
+    } else {
+      output_filename_or_null = "latency_trace.txt";
+    }
+  }
+  return output_filename_or_null;
+}
+
+static int timer_log_push_back(gpr_timer_log_list* list, gpr_timer_log* log) {
+  if (list->head == NULL) {
+    list->head = list->tail = log;
+    log->next = log->prev = NULL;
+    return 1;
+  } else {
+    log->prev = list->tail;
+    log->next = NULL;
+    list->tail->next = log;
+    list->tail = log;
+    return 0;
+  }
+}
+
+static gpr_timer_log* timer_log_pop_front(gpr_timer_log_list* list) {
+  gpr_timer_log* out = list->head;
+  if (out != NULL) {
+    list->head = out->next;
+    if (list->head != NULL) {
+      list->head->prev = NULL;
+    } else {
+      list->tail = NULL;
+    }
+  }
+  return out;
+}
+
+static void timer_log_remove(gpr_timer_log_list* list, gpr_timer_log* log) {
+  if (log->prev == NULL) {
+    list->head = log->next;
+    if (list->head != NULL) {
+      list->head->prev = NULL;
+    }
+  } else {
+    log->prev->next = log->next;
+  }
+  if (log->next == NULL) {
+    list->tail = log->prev;
+    if (list->tail != NULL) {
+      list->tail->next = NULL;
+    }
+  } else {
+    log->next->prev = log->prev;
+  }
+}
+
+static void write_log(gpr_timer_log* log) {
+  size_t i;
+  if (output_file == NULL) {
+    output_file = fopen(output_filename(), "w");
+  }
+  for (i = 0; i < log->num_entries; i++) {
+    gpr_timer_entry* entry = &(log->log[i]);
+    if (gpr_time_cmp(entry->tm, gpr_time_0(entry->tm.clock_type)) < 0) {
+      entry->tm = gpr_time_0(entry->tm.clock_type);
+    }
+    fprintf(output_file,
+            "{\"t\": %" PRId64
+            ".%09d, \"thd\": \"%d\", \"type\": \"%c\", \"tag\": "
+            "\"%s\", \"file\": \"%s\", \"line\": %d, \"imp\": %d}\n",
+            entry->tm.tv_sec, entry->tm.tv_nsec, entry->thd, entry->type,
+            entry->tagstr, entry->file, entry->line, entry->important);
+  }
+}
+
+static void* writing_thread(void* unused) {
+  gpr_timer_log* log;
+  pthread_mutex_lock(&g_mu);
+  for (;;) {
+    while ((log = timer_log_pop_front(&g_done_logs)) == NULL && !g_shutdown) {
+      pthread_cond_wait(&g_cv, &g_mu);
+    }
+    if (log != NULL) {
+      pthread_mutex_unlock(&g_mu);
+      write_log(log);
+      free(log);
+      pthread_mutex_lock(&g_mu);
+    }
+    if (g_shutdown) {
+      pthread_mutex_unlock(&g_mu);
+      return NULL;
+    }
+  }
+}
+
+static void flush_logs(gpr_timer_log_list* list) {
+  gpr_timer_log* log;
+  while ((log = timer_log_pop_front(list)) != NULL) {
+    write_log(log);
+    free(log);
+  }
+}
+
+static void finish_writing(void) {
+  pthread_mutex_lock(&g_mu);
+  g_shutdown = 1;
+  pthread_cond_signal(&g_cv);
+  pthread_mutex_unlock(&g_mu);
+  pthread_join(g_writing_thread, NULL);
+
+  gpr_log(GPR_INFO, "flushing logs");
+
+  pthread_mutex_lock(&g_mu);
+  flush_logs(&g_done_logs);
+  flush_logs(&g_in_progress_logs);
+  pthread_mutex_unlock(&g_mu);
+
+  if (output_file) {
+    fclose(output_file);
+  }
+}
+
+void gpr_timers_set_log_filename(const char* filename) {
+  output_filename_or_null = filename;
+}
+
+static void init_output() {
+  pthread_attr_t attr;
+  pthread_attr_init(&attr);
+  pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
+  pthread_create(&g_writing_thread, &attr, &writing_thread, NULL);
+  pthread_attr_destroy(&attr);
+
+  atexit(finish_writing);
+}
+
+static void rotate_log() {
+  /* Using malloc here, as this code could end up being called by gpr_malloc */
+  gpr_timer_log* log = static_cast<gpr_timer_log*>(malloc(sizeof(*log)));
+  gpr_once_init(&g_once_init, init_output);
+  log->num_entries = 0;
+  pthread_mutex_lock(&g_mu);
+  if (g_thread_log != NULL) {
+    timer_log_remove(&g_in_progress_logs, g_thread_log);
+    if (timer_log_push_back(&g_done_logs, g_thread_log)) {
+      pthread_cond_signal(&g_cv);
+    }
+  } else {
+    g_thread_id = g_next_thread_id++;
+  }
+  timer_log_push_back(&g_in_progress_logs, log);
+  pthread_mutex_unlock(&g_mu);
+  g_thread_log = log;
+}
+
+static void gpr_timers_log_add(const char* tagstr, marker_type type,
+                               int important, const char* file, int line) {
+  gpr_timer_entry* entry;
+
+  if (!g_writing_enabled) {
+    return;
+  }
+
+  if (g_thread_log == NULL || g_thread_log->num_entries == MAX_COUNT) {
+    rotate_log();
+  }
+
+  entry = &g_thread_log->log[g_thread_log->num_entries++];
+
+  entry->tm = gpr_now(GPR_CLOCK_PRECISE);
+  entry->tagstr = tagstr;
+  entry->type = type;
+  entry->file = file;
+  entry->line = (short)line;
+  entry->important = important != 0;
+  entry->thd = g_thread_id;
+}
+
+/* Latency profiler API implementation. */
+void gpr_timer_add_mark(const char* tagstr, int important, const char* file,
+                        int line) {
+  gpr_timers_log_add(tagstr, MARK, important, file, line);
+}
+
+void gpr_timer_begin(const char* tagstr, int important, const char* file,
+                     int line) {
+  gpr_timers_log_add(tagstr, BEGIN, important, file, line);
+}
+
+void gpr_timer_end(const char* tagstr, int important, const char* file,
+                   int line) {
+  gpr_timers_log_add(tagstr, END, important, file, line);
+}
+
+void gpr_timer_set_enabled(int enabled) { g_writing_enabled = enabled; }
+
+/* Basic profiler specific API functions. */
+void gpr_timers_global_init(void) {}
+
+void gpr_timers_global_destroy(void) {}
+
+#else  /* !GRPC_BASIC_PROFILER */
+void gpr_timers_global_init(void) {}
+
+void gpr_timers_global_destroy(void) {}
+
+void gpr_timers_set_log_filename(const char* /*filename*/) {}
+
+void gpr_timer_set_enabled(int /*enabled*/) {}
+#endif /* GRPC_BASIC_PROFILER */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/stap_timers.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/stap_timers.cc
new file mode 100644
index 0000000..5ee1c43
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/stap_timers.cc	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_STAP_PROFILER
+
+#include "src/core/lib/profiling/timers.h"
+
+#include <sys/sdt.h>
+/* Generated from src/core/profiling/stap_probes.d */
+#include "src/core/lib/profiling/stap_probes.h"
+
+/* Latency profiler API implementation. */
+void gpr_timer_add_mark(int tag, const char* tagstr, void* id, const char* file,
+                        int line) {
+  _STAP_ADD_MARK(tag);
+}
+
+void gpr_timer_add_important_mark(int tag, const char* tagstr, void* id,
+                                  const char* file, int line) {
+  _STAP_ADD_IMPORTANT_MARK(tag);
+}
+
+void gpr_timer_begin(int tag, const char* tagstr, void* id, const char* file,
+                     int line) {
+  _STAP_TIMING_NS_BEGIN(tag);
+}
+
+void gpr_timer_end(int tag, const char* tagstr, void* id, const char* file,
+                   int line) {
+  _STAP_TIMING_NS_END(tag);
+}
+
+#endif /* GRPC_STAP_PROFILER */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/timers.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/timers.h
new file mode 100644
index 0000000..7ff7278
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/profiling/timers.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_PROFILING_TIMERS_H
+#define GRPC_CORE_LIB_PROFILING_TIMERS_H
+
+void gpr_timers_global_init(void);
+void gpr_timers_global_destroy(void);
+
+void gpr_timer_add_mark(const char* tagstr, int important, const char* file,
+                        int line);
+void gpr_timer_begin(const char* tagstr, int important, const char* file,
+                     int line);
+void gpr_timer_end(const char* tagstr, int important, const char* file,
+                   int line);
+
+void gpr_timers_set_log_filename(const char* filename);
+
+void gpr_timer_set_enabled(int enabled);
+
+#if !(defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER) + \
+      defined(GRPC_CUSTOM_PROFILER))
+/* No profiling. No-op all the things. */
+#define GPR_TIMER_MARK(tag, important) \
+  do {                                 \
+  } while (0)
+
+#define GPR_TIMER_SCOPE(tag, important) \
+  do {                                  \
+  } while (0)
+
+#else /* at least one profiler requested... */
+/* ... hopefully only one. */
+#if defined(GRPC_STAP_PROFILER) && defined(GRPC_BASIC_PROFILER)
+#error "GRPC_STAP_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
+#endif
+#if defined(GRPC_STAP_PROFILER) && defined(GRPC_CUSTOM_PROFILER)
+#error "GRPC_STAP_PROFILER and GRPC_CUSTOM_PROFILER are mutually exclusive."
+#endif
+#if defined(GRPC_CUSTOM_PROFILER) && defined(GRPC_BASIC_PROFILER)
+#error "GRPC_CUSTOM_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
+#endif
+
+/* Generic profiling interface. */
+#define GPR_TIMER_MARK(tag, important) \
+  gpr_timer_add_mark(tag, important, __FILE__, __LINE__);
+
+#ifdef GRPC_STAP_PROFILER
+/* Empty placeholder for now. */
+#endif /* GRPC_STAP_PROFILER */
+
+#ifdef GRPC_BASIC_PROFILER
+/* Empty placeholder for now. */
+#endif /* GRPC_BASIC_PROFILER */
+
+namespace grpc {
+class ProfileScope {
+ public:
+  ProfileScope(const char* desc, bool important, const char* file, int line)
+      : desc_(desc) {
+    gpr_timer_begin(desc_, important ? 1 : 0, file, line);
+  }
+  ~ProfileScope() { gpr_timer_end(desc_, 0, "n/a", 0); }
+
+ private:
+  const char* const desc_;
+};
+}  // namespace grpc
+
+#define GPR_TIMER_SCOPE_NAME_INTERNAL(prefix, line) prefix##line
+#define GPR_TIMER_SCOPE_NAME(prefix, line) \
+  GPR_TIMER_SCOPE_NAME_INTERNAL(prefix, line)
+#define GPR_TIMER_SCOPE(tag, important)                                 \
+  ::grpc::ProfileScope GPR_TIMER_SCOPE_NAME(_profile_scope_, __LINE__)( \
+      (tag), (important), __FILE__, __LINE__)
+
+#endif /* at least one profiler requested. */
+
+#endif /* GRPC_CORE_LIB_PROFILING_TIMERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.cc
new file mode 100644
index 0000000..ef60165
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.cc	
@@ -0,0 +1,321 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_auth_context_refcount(
+    false, "auth_context_refcount");
+
+/* --- grpc_call --- */
+
+grpc_call_error grpc_call_set_credentials(grpc_call* call,
+                                          grpc_call_credentials* creds) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_client_security_context* ctx = nullptr;
+  GRPC_API_TRACE("grpc_call_set_credentials(call=%p, creds=%p)", 2,
+                 (call, creds));
+  if (!grpc_call_is_client(call)) {
+    gpr_log(GPR_ERROR, "Method is client-side only.");
+    return GRPC_CALL_ERROR_NOT_ON_SERVER;
+  }
+  ctx = static_cast<grpc_client_security_context*>(
+      grpc_call_context_get(call, GRPC_CONTEXT_SECURITY));
+  if (ctx == nullptr) {
+    ctx = grpc_client_security_context_create(grpc_call_get_arena(call), creds);
+    grpc_call_context_set(call, GRPC_CONTEXT_SECURITY, ctx,
+                          grpc_client_security_context_destroy);
+  } else {
+    ctx->creds = creds != nullptr ? creds->Ref() : nullptr;
+  }
+
+  return GRPC_CALL_OK;
+}
+
+grpc_auth_context* grpc_call_auth_context(grpc_call* call) {
+  void* sec_ctx = grpc_call_context_get(call, GRPC_CONTEXT_SECURITY);
+  GRPC_API_TRACE("grpc_call_auth_context(call=%p)", 1, (call));
+  if (sec_ctx == nullptr) return nullptr;
+  if (grpc_call_is_client(call)) {
+    auto* sc = static_cast<grpc_client_security_context*>(sec_ctx);
+    if (sc->auth_context == nullptr) {
+      return nullptr;
+    } else {
+      return sc->auth_context
+          ->Ref(DEBUG_LOCATION, "grpc_call_auth_context client")
+          .release();
+    }
+  } else {
+    auto* sc = static_cast<grpc_server_security_context*>(sec_ctx);
+    if (sc->auth_context == nullptr) {
+      return nullptr;
+    } else {
+      return sc->auth_context
+          ->Ref(DEBUG_LOCATION, "grpc_call_auth_context server")
+          .release();
+    }
+  }
+}
+
+void grpc_auth_context_release(grpc_auth_context* context) {
+  GRPC_API_TRACE("grpc_auth_context_release(context=%p)", 1, (context));
+  if (context == nullptr) return;
+  context->Unref(DEBUG_LOCATION, "grpc_auth_context_unref");
+}
+
+/* --- grpc_client_security_context --- */
+grpc_client_security_context::~grpc_client_security_context() {
+  auth_context.reset(DEBUG_LOCATION, "client_security_context");
+  if (extension.instance != nullptr && extension.destroy != nullptr) {
+    extension.destroy(extension.instance);
+  }
+}
+
+grpc_client_security_context* grpc_client_security_context_create(
+    grpc_core::Arena* arena, grpc_call_credentials* creds) {
+  return arena->New<grpc_client_security_context>(
+      creds != nullptr ? creds->Ref() : nullptr);
+}
+
+void grpc_client_security_context_destroy(void* ctx) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_client_security_context* c =
+      static_cast<grpc_client_security_context*>(ctx);
+  c->~grpc_client_security_context();
+}
+
+/* --- grpc_server_security_context --- */
+grpc_server_security_context::~grpc_server_security_context() {
+  auth_context.reset(DEBUG_LOCATION, "server_security_context");
+  if (extension.instance != nullptr && extension.destroy != nullptr) {
+    extension.destroy(extension.instance);
+  }
+}
+
+grpc_server_security_context* grpc_server_security_context_create(
+    grpc_core::Arena* arena) {
+  return arena->New<grpc_server_security_context>();
+}
+
+void grpc_server_security_context_destroy(void* ctx) {
+  grpc_server_security_context* c =
+      static_cast<grpc_server_security_context*>(ctx);
+  c->~grpc_server_security_context();
+}
+
+/* --- grpc_auth_context --- */
+
+static grpc_auth_property_iterator empty_iterator = {nullptr, 0, nullptr};
+
+const char* grpc_auth_context_peer_identity_property_name(
+    const grpc_auth_context* ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_identity_property_name(ctx=%p)", 1,
+                 (ctx));
+  return ctx->peer_identity_property_name();
+}
+
+int grpc_auth_context_set_peer_identity_property_name(grpc_auth_context* ctx,
+                                                      const char* name) {
+  grpc_auth_property_iterator it =
+      grpc_auth_context_find_properties_by_name(ctx, name);
+  const grpc_auth_property* prop = grpc_auth_property_iterator_next(&it);
+  GRPC_API_TRACE(
+      "grpc_auth_context_set_peer_identity_property_name(ctx=%p, name=%s)", 2,
+      (ctx, name));
+  if (prop == nullptr) {
+    gpr_log(GPR_ERROR, "Property name %s not found in auth context.",
+            name != nullptr ? name : "NULL");
+    return 0;
+  }
+  ctx->set_peer_identity_property_name(prop->name);
+  return 1;
+}
+
+int grpc_auth_context_peer_is_authenticated(const grpc_auth_context* ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_is_authenticated(ctx=%p)", 1, (ctx));
+  return ctx->is_authenticated();
+}
+
+grpc_auth_property_iterator grpc_auth_context_property_iterator(
+    const grpc_auth_context* ctx) {
+  grpc_auth_property_iterator it = empty_iterator;
+  GRPC_API_TRACE("grpc_auth_context_property_iterator(ctx=%p)", 1, (ctx));
+  if (ctx == nullptr) return it;
+  it.ctx = ctx;
+  return it;
+}
+
+const grpc_auth_property* grpc_auth_property_iterator_next(
+    grpc_auth_property_iterator* it) {
+  GRPC_API_TRACE("grpc_auth_property_iterator_next(it=%p)", 1, (it));
+  if (it == nullptr || it->ctx == nullptr) return nullptr;
+  while (it->index == it->ctx->properties().count) {
+    if (it->ctx->chained() == nullptr) return nullptr;
+    it->ctx = it->ctx->chained();
+    it->index = 0;
+  }
+  if (it->name == nullptr) {
+    return &it->ctx->properties().array[it->index++];
+  } else {
+    while (it->index < it->ctx->properties().count) {
+      const grpc_auth_property* prop =
+          &it->ctx->properties().array[it->index++];
+      GPR_ASSERT(prop->name != nullptr);
+      if (strcmp(it->name, prop->name) == 0) {
+        return prop;
+      }
+    }
+    /* We could not find the name, try another round. */
+    return grpc_auth_property_iterator_next(it);
+  }
+}
+
+grpc_auth_property_iterator grpc_auth_context_find_properties_by_name(
+    const grpc_auth_context* ctx, const char* name) {
+  grpc_auth_property_iterator it = empty_iterator;
+  GRPC_API_TRACE("grpc_auth_context_find_properties_by_name(ctx=%p, name=%s)",
+                 2, (ctx, name));
+  if (ctx == nullptr || name == nullptr) return empty_iterator;
+  it.ctx = ctx;
+  it.name = name;
+  return it;
+}
+
+grpc_auth_property_iterator grpc_auth_context_peer_identity(
+    const grpc_auth_context* ctx) {
+  GRPC_API_TRACE("grpc_auth_context_peer_identity(ctx=%p)", 1, (ctx));
+  if (ctx == nullptr) return empty_iterator;
+  return grpc_auth_context_find_properties_by_name(
+      ctx, ctx->peer_identity_property_name());
+}
+
+void grpc_auth_context::ensure_capacity() {
+  if (properties_.count == properties_.capacity) {
+    properties_.capacity =
+        GPR_MAX(properties_.capacity + 8, properties_.capacity * 2);
+    properties_.array = static_cast<grpc_auth_property*>(gpr_realloc(
+        properties_.array, properties_.capacity * sizeof(grpc_auth_property)));
+  }
+}
+
+void grpc_auth_context::add_property(const char* name, const char* value,
+                                     size_t value_length) {
+  ensure_capacity();
+  grpc_auth_property* prop = &properties_.array[properties_.count++];
+  prop->name = gpr_strdup(name);
+  prop->value = static_cast<char*>(gpr_malloc(value_length + 1));
+  memcpy(prop->value, value, value_length);
+  prop->value[value_length] = '\0';
+  prop->value_length = value_length;
+}
+
+void grpc_auth_context_add_property(grpc_auth_context* ctx, const char* name,
+                                    const char* value, size_t value_length) {
+  GRPC_API_TRACE(
+      "grpc_auth_context_add_property(ctx=%p, name=%s, value=%*.*s, "
+      "value_length=%lu)",
+      6,
+      (ctx, name, (int)value_length, (int)value_length, value,
+       (unsigned long)value_length));
+  ctx->add_property(name, value, value_length);
+}
+
+void grpc_auth_context::add_cstring_property(const char* name,
+                                             const char* value) {
+  ensure_capacity();
+  grpc_auth_property* prop = &properties_.array[properties_.count++];
+  prop->name = gpr_strdup(name);
+  prop->value = gpr_strdup(value);
+  prop->value_length = strlen(value);
+}
+
+void grpc_auth_context_add_cstring_property(grpc_auth_context* ctx,
+                                            const char* name,
+                                            const char* value) {
+  GRPC_API_TRACE(
+      "grpc_auth_context_add_cstring_property(ctx=%p, name=%s, value=%s)", 3,
+      (ctx, name, value));
+  ctx->add_cstring_property(name, value);
+}
+
+void grpc_auth_property_reset(grpc_auth_property* property) {
+  gpr_free(property->name);
+  gpr_free(property->value);
+  memset(property, 0, sizeof(grpc_auth_property));
+}
+
+static void auth_context_pointer_arg_destroy(void* p) {
+  if (p != nullptr) {
+    static_cast<grpc_auth_context*>(p)->Unref(DEBUG_LOCATION,
+                                              "auth_context_pointer_arg");
+  }
+}
+
+static void* auth_context_pointer_arg_copy(void* p) {
+  auto* ctx = static_cast<grpc_auth_context*>(p);
+  return ctx == nullptr
+             ? nullptr
+             : ctx->Ref(DEBUG_LOCATION, "auth_context_pointer_arg").release();
+}
+
+static int auth_context_pointer_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+static const grpc_arg_pointer_vtable auth_context_pointer_vtable = {
+    auth_context_pointer_arg_copy, auth_context_pointer_arg_destroy,
+    auth_context_pointer_cmp};
+
+grpc_arg grpc_auth_context_to_arg(grpc_auth_context* p) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_AUTH_CONTEXT_ARG, p,
+                                         &auth_context_pointer_vtable);
+}
+
+grpc_auth_context* grpc_auth_context_from_arg(const grpc_arg* arg) {
+  if (strcmp(arg->key, GRPC_AUTH_CONTEXT_ARG) != 0) return nullptr;
+  if (arg->type != GRPC_ARG_POINTER) {
+    gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type,
+            GRPC_AUTH_CONTEXT_ARG);
+    return nullptr;
+  }
+  return static_cast<grpc_auth_context*>(arg->value.pointer.p);
+}
+
+grpc_auth_context* grpc_find_auth_context_in_args(
+    const grpc_channel_args* args) {
+  size_t i;
+  if (args == nullptr) return nullptr;
+  for (i = 0; i < args->num_args; i++) {
+    grpc_auth_context* p = grpc_auth_context_from_arg(&args->args[i]);
+    if (p != nullptr) return p;
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.h
new file mode 100644
index 0000000..b199108
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/context/security_context.h	
@@ -0,0 +1,150 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H
+#define GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_auth_context_refcount;
+
+/* --- grpc_auth_context ---
+
+   High level authentication context object. Can optionally be chained. */
+
+/* Property names are always NULL terminated. */
+
+struct grpc_auth_property_array {
+  grpc_auth_property* array = nullptr;
+  size_t count = 0;
+  size_t capacity = 0;
+};
+
+void grpc_auth_property_reset(grpc_auth_property* property);
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_auth_context
+    : public grpc_core::RefCounted<grpc_auth_context,
+                                   grpc_core::NonPolymorphicRefCount> {
+ public:
+  explicit grpc_auth_context(
+      grpc_core::RefCountedPtr<grpc_auth_context> chained)
+      : grpc_core::RefCounted<grpc_auth_context,
+                              grpc_core::NonPolymorphicRefCount>(
+            &grpc_trace_auth_context_refcount),
+        chained_(std::move(chained)) {
+    if (chained_ != nullptr) {
+      peer_identity_property_name_ = chained_->peer_identity_property_name_;
+    }
+  }
+
+  ~grpc_auth_context() {
+    chained_.reset(DEBUG_LOCATION, "chained");
+    if (properties_.array != nullptr) {
+      for (size_t i = 0; i < properties_.count; i++) {
+        grpc_auth_property_reset(&properties_.array[i]);
+      }
+      gpr_free(properties_.array);
+    }
+  }
+
+  const grpc_auth_context* chained() const { return chained_.get(); }
+  const grpc_auth_property_array& properties() const { return properties_; }
+
+  bool is_authenticated() const {
+    return peer_identity_property_name_ != nullptr;
+  }
+  const char* peer_identity_property_name() const {
+    return peer_identity_property_name_;
+  }
+  void set_peer_identity_property_name(const char* name) {
+    peer_identity_property_name_ = name;
+  }
+
+  void ensure_capacity();
+  void add_property(const char* name, const char* value, size_t value_length);
+  void add_cstring_property(const char* name, const char* value);
+
+ private:
+  grpc_core::RefCountedPtr<grpc_auth_context> chained_;
+  grpc_auth_property_array properties_;
+  const char* peer_identity_property_name_ = nullptr;
+};
+
+/* --- grpc_security_context_extension ---
+
+   Extension to the security context that may be set in a filter and accessed
+   later by a higher level method on a grpc_call object. */
+
+struct grpc_security_context_extension {
+  void* instance = nullptr;
+  void (*destroy)(void*) = nullptr;
+};
+
+/* --- grpc_client_security_context ---
+
+   Internal client-side security context. */
+
+struct grpc_client_security_context {
+  explicit grpc_client_security_context(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds)
+      : creds(std::move(creds)) {}
+  ~grpc_client_security_context();
+
+  grpc_core::RefCountedPtr<grpc_call_credentials> creds;
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+  grpc_security_context_extension extension;
+};
+
+grpc_client_security_context* grpc_client_security_context_create(
+    grpc_core::Arena* arena, grpc_call_credentials* creds);
+void grpc_client_security_context_destroy(void* ctx);
+
+/* --- grpc_server_security_context ---
+
+   Internal server-side security context. */
+
+struct grpc_server_security_context {
+  grpc_server_security_context() = default;
+  ~grpc_server_security_context();
+
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+  grpc_security_context_extension extension;
+};
+
+grpc_server_security_context* grpc_server_security_context_create(
+    grpc_core::Arena* arena);
+void grpc_server_security_context_destroy(void* ctx);
+
+/* --- Channel args for auth context --- */
+#define GRPC_AUTH_CONTEXT_ARG "grpc.auth_context"
+
+grpc_arg grpc_auth_context_to_arg(grpc_auth_context* c);
+grpc_auth_context* grpc_auth_context_from_arg(const grpc_arg* arg);
+grpc_auth_context* grpc_find_auth_context_in_args(
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CONTEXT_SECURITY_CONTEXT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.cc
new file mode 100644
index 0000000..1bc76d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.cc	
@@ -0,0 +1,110 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/alts/alts_credentials.h"
+
+#include <cstring>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+#include "src/core/lib/security/security_connector/alts/alts_security_connector.h"
+
+#define GRPC_CREDENTIALS_TYPE_ALTS "Alts"
+#define GRPC_ALTS_HANDSHAKER_SERVICE_URL "metadata.google.internal.:8080"
+
+grpc_alts_credentials::grpc_alts_credentials(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url)
+    : grpc_channel_credentials(GRPC_CREDENTIALS_TYPE_ALTS),
+      options_(grpc_alts_credentials_options_copy(options)),
+      handshaker_service_url_(handshaker_service_url == nullptr
+                                  ? gpr_strdup(GRPC_ALTS_HANDSHAKER_SERVICE_URL)
+                                  : gpr_strdup(handshaker_service_url)) {
+  grpc_alts_set_rpc_protocol_versions(&options_->rpc_versions);
+}
+
+grpc_alts_credentials::~grpc_alts_credentials() {
+  grpc_alts_credentials_options_destroy(options_);
+  gpr_free(handshaker_service_url_);
+}
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_alts_credentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+    const char* target_name, const grpc_channel_args* /*args*/,
+    grpc_channel_args** /*new_args*/) {
+  return grpc_alts_channel_security_connector_create(
+      this->Ref(), std::move(call_creds), target_name);
+}
+
+grpc_alts_server_credentials::grpc_alts_server_credentials(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url)
+    : grpc_server_credentials(GRPC_CREDENTIALS_TYPE_ALTS),
+      options_(grpc_alts_credentials_options_copy(options)),
+      handshaker_service_url_(handshaker_service_url == nullptr
+                                  ? gpr_strdup(GRPC_ALTS_HANDSHAKER_SERVICE_URL)
+                                  : gpr_strdup(handshaker_service_url)) {
+  grpc_alts_set_rpc_protocol_versions(&options_->rpc_versions);
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_alts_server_credentials::create_security_connector() {
+  return grpc_alts_server_security_connector_create(this->Ref());
+}
+
+grpc_alts_server_credentials::~grpc_alts_server_credentials() {
+  grpc_alts_credentials_options_destroy(options_);
+  gpr_free(handshaker_service_url_);
+}
+
+grpc_channel_credentials* grpc_alts_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts) {
+  if (!enable_untrusted_alts && !grpc_alts_is_running_on_gcp()) {
+    return nullptr;
+  }
+  return new grpc_alts_credentials(options, handshaker_service_url);
+}
+
+grpc_server_credentials* grpc_alts_server_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts) {
+  if (!enable_untrusted_alts && !grpc_alts_is_running_on_gcp()) {
+    return nullptr;
+  }
+  return new grpc_alts_server_credentials(options, handshaker_service_url);
+}
+
+grpc_channel_credentials* grpc_alts_credentials_create(
+    const grpc_alts_credentials_options* options) {
+  return grpc_alts_credentials_create_customized(
+      options, GRPC_ALTS_HANDSHAKER_SERVICE_URL, false);
+}
+
+grpc_server_credentials* grpc_alts_server_credentials_create(
+    const grpc_alts_credentials_options* options) {
+  return grpc_alts_server_credentials_create_customized(
+      options, GRPC_ALTS_HANDSHAKER_SERVICE_URL, false);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.h
new file mode 100644
index 0000000..cc6d522
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/alts_credentials.h	
@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* Main struct for grpc ALTS channel credential. */
+class grpc_alts_credentials final : public grpc_channel_credentials {
+ public:
+  grpc_alts_credentials(const grpc_alts_credentials_options* options,
+                        const char* handshaker_service_url);
+  ~grpc_alts_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  const grpc_alts_credentials_options* options() const { return options_; }
+  grpc_alts_credentials_options* mutable_options() { return options_; }
+  const char* handshaker_service_url() const { return handshaker_service_url_; }
+
+ private:
+  grpc_alts_credentials_options* options_;
+  char* handshaker_service_url_;
+};
+
+/* Main struct for grpc ALTS server credential. */
+class grpc_alts_server_credentials final : public grpc_server_credentials {
+ public:
+  grpc_alts_server_credentials(const grpc_alts_credentials_options* options,
+                               const char* handshaker_service_url);
+  ~grpc_alts_server_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  const grpc_alts_credentials_options* options() const { return options_; }
+  grpc_alts_credentials_options* mutable_options() { return options_; }
+  const char* handshaker_service_url() const { return handshaker_service_url_; }
+
+ private:
+  grpc_alts_credentials_options* options_;
+  char* handshaker_service_url_;
+};
+
+/**
+ * This method creates an ALTS channel credential object with customized
+ * information provided by caller.
+ *
+ * - options: grpc ALTS credentials options instance for client.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port". If it's nullptr, the address of default metadata server will
+ *   be used.
+ * - enable_untrusted_alts: a boolean flag used to enable ALTS in untrusted
+ *   mode. This mode can be enabled when we are sure ALTS is running on GCP or
+ * for testing purpose.
+ *
+ * It returns nullptr if the flag is disabled AND ALTS is not running on GCP.
+ * Otherwise, it returns the created credential object.
+ */
+
+grpc_channel_credentials* grpc_alts_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts);
+
+/**
+ * This method creates an ALTS server credential object with customized
+ * information provided by caller.
+ *
+ * - options: grpc ALTS credentials options instance for server.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port". If it's nullptr, the address of default metadata server will
+ *   be used.
+ * - enable_untrusted_alts: a boolean flag used to enable ALTS in untrusted
+ *   mode. This mode can be enabled when we are sure ALTS is running on GCP or
+ * for testing purpose.
+ *
+ * It returns nullptr if the flag is disabled and ALTS is not running on GCP.
+ * Otherwise, it returns the created credential object.
+ */
+grpc_server_credentials* grpc_alts_server_credentials_create_customized(
+    const grpc_alts_credentials_options* options,
+    const char* handshaker_service_url, bool enable_untrusted_alts);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_ALTS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.cc
new file mode 100644
index 0000000..9c98d7a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.cc	
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+const size_t kBiosDataBufferSize = 256;
+
+static char* trim(const char* src) {
+  if (src == nullptr || *src == '\0') {
+    return nullptr;
+  }
+  char* des = nullptr;
+  size_t start = 0, end = strlen(src) - 1;
+  /* find the last character that is not a whitespace. */
+  while (end != 0 && isspace(src[end])) {
+    end--;
+  }
+  /* find the first character that is not a whitespace. */
+  while (start < strlen(src) && isspace(src[start])) {
+    start++;
+  }
+  if (start <= end) {
+    des = static_cast<char*>(
+        gpr_zalloc(sizeof(char) * (end - start + 2 /* '\0' */)));
+    memcpy(des, src + start, end - start + 1);
+  }
+  return des;
+}
+
+namespace grpc_core {
+namespace internal {
+
+char* read_bios_file(const char* bios_file) {
+  FILE* fp = fopen(bios_file, "r");
+  if (!fp) {
+    gpr_log(GPR_ERROR, "BIOS data file cannot be opened.");
+    return nullptr;
+  }
+  char buf[kBiosDataBufferSize + 1];
+  size_t ret = fread(buf, sizeof(char), kBiosDataBufferSize, fp);
+  buf[ret] = '\0';
+  char* trimmed_buf = trim(buf);
+  fclose(fp);
+  return trimmed_buf;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.h
new file mode 100644
index 0000000..aea4cea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * This method is a helper function that reads a file containing system bios
+ * data. Exposed for testing only.
+ *
+ * - bios_file: a file containing BIOS data used to determine GCE tenancy
+ *   information.
+ *
+ * It returns a buffer containing the data read from the file.
+ */
+char* read_bios_file(const char* bios_file);
+
+/**
+ * This method checks if system BIOS data contains Google-specific phrases.
+ * Exposed for testing only.
+ *
+ * - bios_data: a buffer containing system BIOS data.
+ *
+ * It returns true if the BIOS data contains Google-specific phrases, and false
+ * otherwise.
+ */
+bool check_bios_data(const char* bios_data);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+/**
+ * This method checks if a VM (Windows or Linux) is running within Google
+ * compute Engine (GCE) or not. It returns true if the VM is running in GCE and
+ * false otherwise.
+ */
+bool grpc_alts_is_running_on_gcp();
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_linux.cc
new file mode 100644
index 0000000..8454fd7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_linux.cc	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX
+
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/sync.h>
+
+#include <string.h>
+
+#define GRPC_ALTS_EXPECT_NAME_GOOGLE "Google"
+#define GRPC_ALTS_EXPECT_NAME_GCE "Google Compute Engine"
+#define GRPC_ALTS_PRODUCT_NAME_FILE "/sys/class/dmi/id/product_name"
+
+static bool g_compute_engine_detection_done = false;
+static bool g_is_on_compute_engine = false;
+static gpr_mu g_mu;
+static gpr_once g_once = GPR_ONCE_INIT;
+
+namespace grpc_core {
+namespace internal {
+
+bool check_bios_data(const char* bios_data_file) {
+  char* bios_data = read_bios_file(bios_data_file);
+  bool result =
+      bios_data && ((!strcmp(bios_data, GRPC_ALTS_EXPECT_NAME_GOOGLE)) ||
+                    (!strcmp(bios_data, GRPC_ALTS_EXPECT_NAME_GCE)));
+  gpr_free(bios_data);
+  return result;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+static void init_mu(void) { gpr_mu_init(&g_mu); }
+
+bool grpc_alts_is_running_on_gcp() {
+  gpr_once_init(&g_once, init_mu);
+  gpr_mu_lock(&g_mu);
+  if (!g_compute_engine_detection_done) {
+    g_is_on_compute_engine =
+        grpc_core::internal::check_bios_data(GRPC_ALTS_PRODUCT_NAME_FILE);
+    g_compute_engine_detection_done = true;
+  }
+  gpr_mu_unlock(&g_mu);
+  return g_is_on_compute_engine;
+}
+
+#endif  // GPR_LINUX
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_no_op.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_no_op.cc
new file mode 100644
index 0000000..b71f66a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_no_op.cc	
@@ -0,0 +1,33 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#if !defined(GPR_LINUX) && !defined(GPR_WINDOWS)
+
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+
+#include <grpc/support/log.h>
+
+bool grpc_alts_is_running_on_gcp() {
+  gpr_log(GPR_INFO,
+          "ALTS: Platforms other than Linux and Windows are not supported");
+  return false;
+}
+
+#endif  // !defined(LINUX) && !defined(GPR_WINDOWS)
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_windows.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_windows.cc
new file mode 100644
index 0000000..59432cf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/check_gcp_environment_windows.cc	
@@ -0,0 +1,102 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+
+#include <shellapi.h>
+#include <stdio.h>
+#include <tchar.h>
+#include <windows.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+namespace grpc_core {
+namespace internal {
+
+bool check_bios_data(const char*) { return false; }
+
+bool check_windows_registry_product_name(HKEY root_key,
+                                         const char* reg_key_path,
+                                         const char* reg_key_name) {
+  const size_t kProductNameBufferSize = 256;
+  char const expected_substr[] = "Google";
+
+  // Get the size of the string first to allocate our buffer. This includes
+  // enough space for the trailing NUL character that will be included.
+  DWORD buffer_size{};
+  auto rc = ::RegGetValueA(
+      root_key, reg_key_path, reg_key_name, RRF_RT_REG_SZ,
+      nullptr,        // We know the type will be REG_SZ.
+      nullptr,        // We're only fetching the size; no buffer given yet.
+      &buffer_size);  // Fetch the size in bytes of the value, if it exists.
+  if (rc != 0) {
+    return false;
+  }
+
+  if (buffer_size > kProductNameBufferSize) {
+    return false;
+  }
+
+  // Retrieve the product name string.
+  char buffer[kProductNameBufferSize];
+  buffer_size = kProductNameBufferSize;
+  rc = ::RegGetValueA(
+      root_key, reg_key_path, reg_key_name, RRF_RT_REG_SZ,
+      nullptr,                     // We know the type will be REG_SZ.
+      static_cast<void*>(buffer),  // Fetch the string value this time.
+      &buffer_size);  // The string size in bytes, not including trailing NUL.
+  if (rc != 0) {
+    return false;
+  }
+
+  return strstr(buffer, expected_substr) != nullptr;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+static bool g_compute_engine_detection_done = false;
+static bool g_is_on_compute_engine = false;
+static gpr_mu g_mu;
+static gpr_once g_once = GPR_ONCE_INIT;
+
+static void init_mu(void) { gpr_mu_init(&g_mu); }
+
+bool grpc_alts_is_running_on_gcp() {
+  char const reg_key_path[] = "SYSTEM\\HardwareConfig\\Current\\";
+  char const reg_key_name[] = "SystemProductName";
+
+  gpr_once_init(&g_once, init_mu);
+  gpr_mu_lock(&g_mu);
+  if (!g_compute_engine_detection_done) {
+    g_is_on_compute_engine =
+        grpc_core::internal::check_windows_registry_product_name(
+            HKEY_LOCAL_MACHINE, reg_key_path, reg_key_name);
+    g_compute_engine_detection_done = true;
+  }
+  gpr_mu_unlock(&g_mu);
+  return g_is_on_compute_engine;
+}
+
+#endif  // GPR_WINDOWS
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_client_options.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_client_options.cc
new file mode 100644
index 0000000..118d18d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_client_options.cc	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/tsi/alts/handshaker/transport_security_common_api.h"
+
+static grpc_alts_credentials_options* alts_client_options_copy(
+    const grpc_alts_credentials_options* options);
+
+static void alts_client_options_destroy(grpc_alts_credentials_options* options);
+
+static target_service_account* target_service_account_create(
+    const char* service_account) {
+  if (service_account == nullptr) {
+    return nullptr;
+  }
+  auto* sa = static_cast<target_service_account*>(
+      gpr_zalloc(sizeof(target_service_account)));
+  sa->data = gpr_strdup(service_account);
+  return sa;
+}
+
+void grpc_alts_credentials_client_options_add_target_service_account(
+    grpc_alts_credentials_options* options, const char* service_account) {
+  if (options == nullptr || service_account == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to "
+        "grpc_alts_credentials_client_options_add_target_service_account()");
+    return;
+  }
+  auto client_options =
+      reinterpret_cast<grpc_alts_credentials_client_options*>(options);
+  target_service_account* node = target_service_account_create(service_account);
+  node->next = client_options->target_account_list_head;
+  client_options->target_account_list_head = node;
+}
+
+static void target_service_account_destroy(
+    target_service_account* service_account) {
+  if (service_account == nullptr) {
+    return;
+  }
+  gpr_free(service_account->data);
+  gpr_free(service_account);
+}
+
+static const grpc_alts_credentials_options_vtable vtable = {
+    alts_client_options_copy, alts_client_options_destroy};
+
+grpc_alts_credentials_options* grpc_alts_credentials_client_options_create(
+    void) {
+  auto client_options = static_cast<grpc_alts_credentials_client_options*>(
+      gpr_zalloc(sizeof(grpc_alts_credentials_client_options)));
+  client_options->base.vtable = &vtable;
+  return &client_options->base;
+}
+
+static grpc_alts_credentials_options* alts_client_options_copy(
+    const grpc_alts_credentials_options* options) {
+  if (options == nullptr) {
+    return nullptr;
+  }
+  grpc_alts_credentials_options* new_options =
+      grpc_alts_credentials_client_options_create();
+  auto new_client_options =
+      reinterpret_cast<grpc_alts_credentials_client_options*>(new_options);
+  /* Copy target service accounts. */
+  target_service_account* prev = nullptr;
+  auto node =
+      (reinterpret_cast<const grpc_alts_credentials_client_options*>(options))
+          ->target_account_list_head;
+  while (node != nullptr) {
+    target_service_account* new_node =
+        target_service_account_create(node->data);
+    if (prev == nullptr) {
+      new_client_options->target_account_list_head = new_node;
+    } else {
+      prev->next = new_node;
+    }
+    prev = new_node;
+    node = node->next;
+  }
+  /* Copy rpc protocol versions. */
+  grpc_gcp_rpc_protocol_versions_copy(&options->rpc_versions,
+                                      &new_options->rpc_versions);
+  return new_options;
+}
+
+static void alts_client_options_destroy(
+    grpc_alts_credentials_options* options) {
+  if (options == nullptr) {
+    return;
+  }
+  auto* client_options =
+      reinterpret_cast<grpc_alts_credentials_client_options*>(options);
+  target_service_account* node = client_options->target_account_list_head;
+  while (node != nullptr) {
+    target_service_account* next_node = node->next;
+    target_service_account_destroy(node);
+    node = next_node;
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.cc
new file mode 100644
index 0000000..d428171
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.cc	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+grpc_alts_credentials_options* grpc_alts_credentials_options_copy(
+    const grpc_alts_credentials_options* options) {
+  if (options != nullptr && options->vtable != nullptr &&
+      options->vtable->copy != nullptr) {
+    return options->vtable->copy(options);
+  }
+  /* An error occurred. */
+  gpr_log(GPR_ERROR,
+          "Invalid arguments to grpc_alts_credentials_options_copy()");
+  return nullptr;
+}
+
+void grpc_alts_credentials_options_destroy(
+    grpc_alts_credentials_options* options) {
+  if (options != nullptr) {
+    if (options->vtable != nullptr && options->vtable->destruct != nullptr) {
+      options->vtable->destruct(options);
+    }
+    gpr_free(options);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h
new file mode 100644
index 0000000..320af71
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/tsi/alts/handshaker/transport_security_common_api.h"
+
+/* V-table for grpc_alts_credentials_options */
+typedef struct grpc_alts_credentials_options_vtable {
+  grpc_alts_credentials_options* (*copy)(
+      const grpc_alts_credentials_options* options);
+  void (*destruct)(grpc_alts_credentials_options* options);
+} grpc_alts_credentials_options_vtable;
+
+struct grpc_alts_credentials_options {
+  const struct grpc_alts_credentials_options_vtable* vtable;
+  grpc_gcp_rpc_protocol_versions rpc_versions;
+};
+
+typedef struct target_service_account {
+  struct target_service_account* next;
+  char* data;
+} target_service_account;
+
+/**
+ * Main struct for ALTS client credentials options. The options contain a
+ * a list of target service accounts (if specified) used for secure naming
+ * check.
+ */
+typedef struct grpc_alts_credentials_client_options {
+  grpc_alts_credentials_options base;
+  target_service_account* target_account_list_head;
+} grpc_alts_credentials_client_options;
+
+/**
+ * Main struct for ALTS server credentials options. The options currently
+ * do not contain any server-specific fields.
+ */
+typedef struct grpc_alts_credentials_server_options {
+  grpc_alts_credentials_options base;
+} grpc_alts_credentials_server_options;
+
+/**
+ * This method performs a deep copy on grpc_alts_credentials_options instance.
+ *
+ * - options: a grpc_alts_credentials_options instance that needs to be copied.
+ *
+ * It returns a new grpc_alts_credentials_options instance on success and NULL
+ * on failure.
+ */
+grpc_alts_credentials_options* grpc_alts_credentials_options_copy(
+    const grpc_alts_credentials_options* options);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_GRPC_ALTS_CREDENTIALS_OPTIONS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_server_options.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_server_options.cc
new file mode 100644
index 0000000..72c6542
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/alts/grpc_alts_credentials_server_options.cc	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/tsi/alts/handshaker/transport_security_common_api.h"
+
+static grpc_alts_credentials_options* alts_server_options_copy(
+    const grpc_alts_credentials_options* options);
+
+static void alts_server_options_destroy(
+    grpc_alts_credentials_options* /*options*/) {}
+
+static const grpc_alts_credentials_options_vtable vtable = {
+    alts_server_options_copy, alts_server_options_destroy};
+
+grpc_alts_credentials_options* grpc_alts_credentials_server_options_create(
+    void) {
+  grpc_alts_credentials_server_options* server_options =
+      static_cast<grpc_alts_credentials_server_options*>(
+          gpr_zalloc(sizeof(*server_options)));
+  server_options->base.vtable = &vtable;
+  return &server_options->base;
+}
+
+static grpc_alts_credentials_options* alts_server_options_copy(
+    const grpc_alts_credentials_options* options) {
+  if (options == nullptr) {
+    return nullptr;
+  }
+  grpc_alts_credentials_options* new_options =
+      grpc_alts_credentials_server_options_create();
+  /* Copy rpc protocol versions. */
+  grpc_gcp_rpc_protocol_versions_copy(&options->rpc_versions,
+                                      &new_options->rpc_versions);
+  return new_options;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.cc
new file mode 100644
index 0000000..dc19e23
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.cc	
@@ -0,0 +1,217 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/composite/composite_credentials.h"
+
+#include <cstring>
+#include <new>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+/* -- Composite call credentials. -- */
+
+static void composite_call_metadata_cb(void* arg, grpc_error* error);
+
+namespace {
+struct grpc_composite_call_credentials_metadata_context {
+  grpc_composite_call_credentials_metadata_context(
+      grpc_composite_call_credentials* composite_creds,
+      grpc_polling_entity* pollent, grpc_auth_metadata_context auth_md_context,
+      grpc_credentials_mdelem_array* md_array,
+      grpc_closure* on_request_metadata)
+      : composite_creds(composite_creds),
+        pollent(pollent),
+        auth_md_context(auth_md_context),
+        md_array(md_array),
+        on_request_metadata(on_request_metadata) {
+    GRPC_CLOSURE_INIT(&internal_on_request_metadata, composite_call_metadata_cb,
+                      this, grpc_schedule_on_exec_ctx);
+  }
+
+  grpc_composite_call_credentials* composite_creds;
+  size_t creds_index = 0;
+  grpc_polling_entity* pollent;
+  grpc_auth_metadata_context auth_md_context;
+  grpc_credentials_mdelem_array* md_array;
+  grpc_closure* on_request_metadata;
+  grpc_closure internal_on_request_metadata;
+};
+}  // namespace
+
+static void composite_call_metadata_cb(void* arg, grpc_error* error) {
+  grpc_composite_call_credentials_metadata_context* ctx =
+      static_cast<grpc_composite_call_credentials_metadata_context*>(arg);
+  if (error == GRPC_ERROR_NONE) {
+    const grpc_composite_call_credentials::CallCredentialsList& inner =
+        ctx->composite_creds->inner();
+    /* See if we need to get some more metadata. */
+    if (ctx->creds_index < inner.size()) {
+      if (inner[ctx->creds_index++]->get_request_metadata(
+              ctx->pollent, ctx->auth_md_context, ctx->md_array,
+              &ctx->internal_on_request_metadata, &error)) {
+        // Synchronous response, so call ourselves recursively.
+        composite_call_metadata_cb(arg, error);
+        GRPC_ERROR_UNREF(error);
+      }
+      return;
+    }
+    // We're done!
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, ctx->on_request_metadata,
+                          GRPC_ERROR_REF(error));
+  delete ctx;
+}
+
+bool grpc_composite_call_credentials::get_request_metadata(
+    grpc_polling_entity* pollent, grpc_auth_metadata_context auth_md_context,
+    grpc_credentials_mdelem_array* md_array, grpc_closure* on_request_metadata,
+    grpc_error** error) {
+  grpc_composite_call_credentials_metadata_context* ctx;
+  ctx = new grpc_composite_call_credentials_metadata_context(
+      this, pollent, auth_md_context, md_array, on_request_metadata);
+  bool synchronous = true;
+  const CallCredentialsList& inner = ctx->composite_creds->inner();
+  while (ctx->creds_index < inner.size()) {
+    if (inner[ctx->creds_index++]->get_request_metadata(
+            ctx->pollent, ctx->auth_md_context, ctx->md_array,
+            &ctx->internal_on_request_metadata, error)) {
+      if (*error != GRPC_ERROR_NONE) break;
+    } else {
+      synchronous = false;  // Async return.
+      break;
+    }
+  }
+  if (synchronous) delete ctx;
+  return synchronous;
+}
+
+void grpc_composite_call_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* md_array, grpc_error* error) {
+  for (size_t i = 0; i < inner_.size(); ++i) {
+    inner_[i]->cancel_get_request_metadata(md_array, GRPC_ERROR_REF(error));
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static size_t get_creds_array_size(const grpc_call_credentials* creds,
+                                   bool is_composite) {
+  return is_composite
+             ? static_cast<const grpc_composite_call_credentials*>(creds)
+                   ->inner()
+                   .size()
+             : 1;
+}
+
+void grpc_composite_call_credentials::push_to_inner(
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds, bool is_composite) {
+  if (!is_composite) {
+    inner_.push_back(std::move(creds));
+    return;
+  }
+  auto composite_creds =
+      static_cast<grpc_composite_call_credentials*>(creds.get());
+  for (size_t i = 0; i < composite_creds->inner().size(); ++i) {
+    inner_.push_back(std::move(composite_creds->inner_[i]));
+  }
+}
+
+grpc_composite_call_credentials::grpc_composite_call_credentials(
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds1,
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds2)
+    : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE) {
+  const bool creds1_is_composite =
+      strcmp(creds1->type(), GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE) == 0;
+  const bool creds2_is_composite =
+      strcmp(creds2->type(), GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE) == 0;
+  const size_t size = get_creds_array_size(creds1.get(), creds1_is_composite) +
+                      get_creds_array_size(creds2.get(), creds2_is_composite);
+  inner_.reserve(size);
+  push_to_inner(std::move(creds1), creds1_is_composite);
+  push_to_inner(std::move(creds2), creds2_is_composite);
+  min_security_level_ = GRPC_SECURITY_NONE;
+  for (size_t i = 0; i < inner_.size(); ++i) {
+    if (static_cast<int>(min_security_level_) <
+        static_cast<int>(inner_[i]->min_security_level())) {
+      min_security_level_ = inner_[i]->min_security_level();
+    }
+  }
+}
+
+static grpc_core::RefCountedPtr<grpc_call_credentials>
+composite_call_credentials_create(
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds1,
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds2) {
+  return grpc_core::MakeRefCounted<grpc_composite_call_credentials>(
+      std::move(creds1), std::move(creds2));
+}
+
+grpc_call_credentials* grpc_composite_call_credentials_create(
+    grpc_call_credentials* creds1, grpc_call_credentials* creds2,
+    void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_composite_call_credentials_create(creds1=%p, creds2=%p, "
+      "reserved=%p)",
+      3, (creds1, creds2, reserved));
+  GPR_ASSERT(reserved == nullptr);
+  GPR_ASSERT(creds1 != nullptr);
+  GPR_ASSERT(creds2 != nullptr);
+
+  return composite_call_credentials_create(creds1->Ref(), creds2->Ref())
+      .release();
+}
+
+/* -- Composite channel credentials. -- */
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_composite_channel_credentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+    const char* target, const grpc_channel_args* args,
+    grpc_channel_args** new_args) {
+  GPR_ASSERT(inner_creds_ != nullptr && call_creds_ != nullptr);
+  /* If we are passed a call_creds, create a call composite to pass it
+     downstream. */
+  if (call_creds != nullptr) {
+    return inner_creds_->create_security_connector(
+        composite_call_credentials_create(call_creds_, std::move(call_creds)),
+        target, args, new_args);
+  } else {
+    return inner_creds_->create_security_connector(call_creds_, target, args,
+                                                   new_args);
+  }
+}
+
+grpc_channel_credentials* grpc_composite_channel_credentials_create(
+    grpc_channel_credentials* channel_creds, grpc_call_credentials* call_creds,
+    void* reserved) {
+  GPR_ASSERT(channel_creds != nullptr && call_creds != nullptr &&
+             reserved == nullptr);
+  GRPC_API_TRACE(
+      "grpc_composite_channel_credentials_create(channel_creds=%p, "
+      "call_creds=%p, reserved=%p)",
+      3, (channel_creds, call_creds, reserved));
+  return new grpc_composite_channel_credentials(channel_creds->Ref(),
+                                                call_creds->Ref());
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.h
new file mode 100644
index 0000000..74d55bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/composite/composite_credentials.h	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* -- Composite channel credentials. -- */
+
+class grpc_composite_channel_credentials : public grpc_channel_credentials {
+ public:
+  grpc_composite_channel_credentials(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds)
+      : grpc_channel_credentials(channel_creds->type()),
+        inner_creds_(std::move(channel_creds)),
+        call_creds_(std::move(call_creds)) {}
+
+  ~grpc_composite_channel_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_credentials>
+  duplicate_without_call_credentials() override {
+    return inner_creds_;
+  }
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_channel_args* update_arguments(grpc_channel_args* args) override {
+    return inner_creds_->update_arguments(args);
+  }
+
+  const grpc_channel_credentials* inner_creds() const {
+    return inner_creds_.get();
+  }
+  const grpc_call_credentials* call_creds() const { return call_creds_.get(); }
+  grpc_call_credentials* mutable_call_creds() { return call_creds_.get(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> inner_creds_;
+  grpc_core::RefCountedPtr<grpc_call_credentials> call_creds_;
+};
+
+/* -- Composite call credentials. -- */
+
+class grpc_composite_call_credentials : public grpc_call_credentials {
+ public:
+  using CallCredentialsList =
+      grpc_core::InlinedVector<grpc_core::RefCountedPtr<grpc_call_credentials>,
+                               2>;
+
+  grpc_composite_call_credentials(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds1,
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds2);
+  ~grpc_composite_call_credentials() override = default;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  grpc_security_level min_security_level() const override {
+    return min_security_level_;
+  }
+
+  const CallCredentialsList& inner() const { return inner_; }
+
+ private:
+  void push_to_inner(grpc_core::RefCountedPtr<grpc_call_credentials> creds,
+                     bool is_composite);
+  grpc_security_level min_security_level_;
+  CallCredentialsList inner_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_COMPOSITE_COMPOSITE_CREDENTIALS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.cc
new file mode 100644
index 0000000..8ef58d2
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.cc	
@@ -0,0 +1,246 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+/* -- Common. -- */
+
+void grpc_channel_credentials_release(grpc_channel_credentials* creds) {
+  GRPC_API_TRACE("grpc_channel_credentials_release(creds=%p)", 1, (creds));
+  grpc_core::ExecCtx exec_ctx;
+  if (creds) creds->Unref();
+}
+
+static std::map<grpc_core::UniquePtr<char>,
+                grpc_core::RefCountedPtr<grpc_channel_credentials>,
+                grpc_core::StringLess>* g_grpc_control_plane_creds;
+static gpr_mu g_control_plane_creds_mu;
+
+static void do_control_plane_creds_init() {
+  gpr_mu_init(&g_control_plane_creds_mu);
+  GPR_ASSERT(g_grpc_control_plane_creds == nullptr);
+  g_grpc_control_plane_creds =
+      new std::map<grpc_core::UniquePtr<char>,
+                   grpc_core::RefCountedPtr<grpc_channel_credentials>,
+                   grpc_core::StringLess>();
+}
+
+void grpc_control_plane_credentials_init() {
+  static gpr_once once_init_control_plane_creds = GPR_ONCE_INIT;
+  gpr_once_init(&once_init_control_plane_creds, do_control_plane_creds_init);
+}
+
+void grpc_test_only_control_plane_credentials_destroy() {
+  delete g_grpc_control_plane_creds;
+  g_grpc_control_plane_creds = nullptr;
+  gpr_mu_destroy(&g_control_plane_creds_mu);
+}
+
+void grpc_test_only_control_plane_credentials_force_init() {
+  if (g_grpc_control_plane_creds == nullptr) {
+    do_control_plane_creds_init();
+  }
+}
+
+bool grpc_channel_credentials_attach_credentials(
+    grpc_channel_credentials* credentials, const char* authority,
+    grpc_channel_credentials* control_plane_creds) {
+  grpc_core::ExecCtx exec_ctx;
+  return credentials->attach_credentials(authority, control_plane_creds->Ref());
+}
+
+bool grpc_control_plane_credentials_register(
+    const char* authority, grpc_channel_credentials* control_plane_creds) {
+  grpc_core::ExecCtx exec_ctx;
+  {
+    grpc_core::MutexLock lock(&g_control_plane_creds_mu);
+    auto key = grpc_core::UniquePtr<char>(gpr_strdup(authority));
+    if (g_grpc_control_plane_creds->find(key) !=
+        g_grpc_control_plane_creds->end()) {
+      return false;
+    }
+    (*g_grpc_control_plane_creds)[std::move(key)] = control_plane_creds->Ref();
+  }
+  return true;
+}
+
+bool grpc_channel_credentials::attach_credentials(
+    const char* authority,
+    grpc_core::RefCountedPtr<grpc_channel_credentials> control_plane_creds) {
+  auto key = grpc_core::UniquePtr<char>(gpr_strdup(authority));
+  if (local_control_plane_creds_.find(key) !=
+      local_control_plane_creds_.end()) {
+    return false;
+  }
+  local_control_plane_creds_[std::move(key)] = std::move(control_plane_creds);
+  return true;
+}
+
+grpc_core::RefCountedPtr<grpc_channel_credentials>
+grpc_channel_credentials::get_control_plane_credentials(const char* authority) {
+  {
+    auto key = grpc_core::UniquePtr<char>(gpr_strdup(authority));
+    auto local_lookup = local_control_plane_creds_.find(key);
+    if (local_lookup != local_control_plane_creds_.end()) {
+      return local_lookup->second;
+    }
+    {
+      grpc_core::MutexLock lock(&g_control_plane_creds_mu);
+      auto global_lookup = g_grpc_control_plane_creds->find(key);
+      if (global_lookup != g_grpc_control_plane_creds->end()) {
+        return global_lookup->second;
+      }
+    }
+  }
+  return duplicate_without_call_credentials();
+}
+
+void grpc_call_credentials_release(grpc_call_credentials* creds) {
+  GRPC_API_TRACE("grpc_call_credentials_release(creds=%p)", 1, (creds));
+  grpc_core::ExecCtx exec_ctx;
+  if (creds) creds->Unref();
+}
+
+static void credentials_pointer_arg_destroy(void* p) {
+  static_cast<grpc_channel_credentials*>(p)->Unref();
+}
+
+static void* credentials_pointer_arg_copy(void* p) {
+  return static_cast<grpc_channel_credentials*>(p)->Ref().release();
+}
+
+static int credentials_pointer_cmp(void* a, void* b) { return GPR_ICMP(a, b); }
+
+static const grpc_arg_pointer_vtable credentials_pointer_vtable = {
+    credentials_pointer_arg_copy, credentials_pointer_arg_destroy,
+    credentials_pointer_cmp};
+
+grpc_arg grpc_channel_credentials_to_arg(
+    grpc_channel_credentials* credentials) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_CHANNEL_CREDENTIALS,
+                                         credentials,
+                                         &credentials_pointer_vtable);
+}
+
+grpc_channel_credentials* grpc_channel_credentials_from_arg(
+    const grpc_arg* arg) {
+  if (strcmp(arg->key, GRPC_ARG_CHANNEL_CREDENTIALS)) return nullptr;
+  if (arg->type != GRPC_ARG_POINTER) {
+    gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type,
+            GRPC_ARG_CHANNEL_CREDENTIALS);
+    return nullptr;
+  }
+  return static_cast<grpc_channel_credentials*>(arg->value.pointer.p);
+}
+
+grpc_channel_credentials* grpc_channel_credentials_find_in_args(
+    const grpc_channel_args* args) {
+  size_t i;
+  if (args == nullptr) return nullptr;
+  for (i = 0; i < args->num_args; i++) {
+    grpc_channel_credentials* credentials =
+        grpc_channel_credentials_from_arg(&args->args[i]);
+    if (credentials != nullptr) return credentials;
+  }
+  return nullptr;
+}
+
+void grpc_server_credentials_release(grpc_server_credentials* creds) {
+  GRPC_API_TRACE("grpc_server_credentials_release(creds=%p)", 1, (creds));
+  grpc_core::ExecCtx exec_ctx;
+  if (creds) creds->Unref();
+}
+
+void grpc_server_credentials::set_auth_metadata_processor(
+    const grpc_auth_metadata_processor& processor) {
+  GRPC_API_TRACE(
+      "grpc_server_credentials_set_auth_metadata_processor("
+      "creds=%p, "
+      "processor=grpc_auth_metadata_processor { process: %p, state: %p })",
+      3, (this, (void*)(intptr_t)processor.process, processor.state));
+  DestroyProcessor();
+  processor_ = processor;
+}
+
+void grpc_server_credentials_set_auth_metadata_processor(
+    grpc_server_credentials* creds, grpc_auth_metadata_processor processor) {
+  GPR_DEBUG_ASSERT(creds != nullptr);
+  creds->set_auth_metadata_processor(processor);
+}
+
+static void server_credentials_pointer_arg_destroy(void* p) {
+  static_cast<grpc_server_credentials*>(p)->Unref();
+}
+
+static void* server_credentials_pointer_arg_copy(void* p) {
+  return static_cast<grpc_server_credentials*>(p)->Ref().release();
+}
+
+static int server_credentials_pointer_cmp(void* a, void* b) {
+  return GPR_ICMP(a, b);
+}
+
+static const grpc_arg_pointer_vtable cred_ptr_vtable = {
+    server_credentials_pointer_arg_copy, server_credentials_pointer_arg_destroy,
+    server_credentials_pointer_cmp};
+
+grpc_arg grpc_server_credentials_to_arg(grpc_server_credentials* p) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_SERVER_CREDENTIALS_ARG, p,
+                                         &cred_ptr_vtable);
+}
+
+grpc_server_credentials* grpc_server_credentials_from_arg(const grpc_arg* arg) {
+  if (strcmp(arg->key, GRPC_SERVER_CREDENTIALS_ARG) != 0) return nullptr;
+  if (arg->type != GRPC_ARG_POINTER) {
+    gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type,
+            GRPC_SERVER_CREDENTIALS_ARG);
+    return nullptr;
+  }
+  return static_cast<grpc_server_credentials*>(arg->value.pointer.p);
+}
+
+grpc_server_credentials* grpc_find_server_credentials_in_args(
+    const grpc_channel_args* args) {
+  size_t i;
+  if (args == nullptr) return nullptr;
+  for (i = 0; i < args->num_args; i++) {
+    grpc_server_credentials* p =
+        grpc_server_credentials_from_arg(&args->args[i]);
+    if (p != nullptr) return p;
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.h
new file mode 100644
index 0000000..65996fd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials.h	
@@ -0,0 +1,334 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/transport/metadata_batch.h"
+
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+struct grpc_http_response;
+
+/* --- Constants. --- */
+
+typedef enum {
+  GRPC_CREDENTIALS_OK = 0,
+  GRPC_CREDENTIALS_ERROR
+} grpc_credentials_status;
+
+#define GRPC_FAKE_TRANSPORT_SECURITY_TYPE "fake"
+
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_SSL "Ssl"
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY \
+  "FakeTransportSecurity"
+#define GRPC_CHANNEL_CREDENTIALS_TYPE_GOOGLE_DEFAULT "GoogleDefault"
+
+#define GRPC_CALL_CREDENTIALS_TYPE_OAUTH2 "Oauth2"
+#define GRPC_CALL_CREDENTIALS_TYPE_JWT "Jwt"
+#define GRPC_CALL_CREDENTIALS_TYPE_IAM "Iam"
+#define GRPC_CALL_CREDENTIALS_TYPE_COMPOSITE "Composite"
+
+#define GRPC_AUTHORIZATION_METADATA_KEY "authorization"
+#define GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY \
+  "x-goog-iam-authorization-token"
+#define GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY "x-goog-iam-authority-selector"
+
+#define GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS 60
+
+#define GRPC_COMPUTE_ENGINE_METADATA_HOST "metadata.google.internal."
+#define GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH \
+  "/computeMetadata/v1/instance/service-accounts/default/token"
+
+#define GRPC_GOOGLE_OAUTH2_SERVICE_HOST "oauth2.googleapis.com"
+#define GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH "/token"
+
+#define GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX                         \
+  "grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&" \
+  "assertion="
+
+#define GRPC_REFRESH_TOKEN_POST_BODY_FORMAT_STRING \
+  "client_id=%s&client_secret=%s&refresh_token=%s&grant_type=refresh_token"
+
+/* --- Google utils --- */
+
+/* It is the caller's responsibility to gpr_free the result if not NULL. */
+char* grpc_get_well_known_google_credentials_file_path(void);
+
+/* Implementation function for the different platforms. */
+char* grpc_get_well_known_google_credentials_file_path_impl(void);
+
+/* Override for testing only. Not thread-safe */
+typedef char* (*grpc_well_known_credentials_path_getter)(void);
+void grpc_override_well_known_credentials_path_getter(
+    grpc_well_known_credentials_path_getter getter);
+
+/* --- grpc_channel_credentials. --- */
+
+#define GRPC_ARG_CHANNEL_CREDENTIALS "grpc.channel_credentials"
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_channel_credentials
+    : grpc_core::RefCounted<grpc_channel_credentials> {
+ public:
+  explicit grpc_channel_credentials(const char* type) : type_(type) {}
+  virtual ~grpc_channel_credentials() = default;
+
+  // Creates a security connector for the channel. May also create new channel
+  // args for the channel to be used in place of the passed in const args if
+  // returned non NULL. In that case the caller is responsible for destroying
+  // new_args after channel creation.
+  virtual grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) = 0;
+
+  // Creates a version of the channel credentials without any attached call
+  // credentials. This can be used in order to open a channel to a non-trusted
+  // gRPC load balancer.
+  virtual grpc_core::RefCountedPtr<grpc_channel_credentials>
+  duplicate_without_call_credentials() {
+    // By default we just increment the refcount.
+    return Ref();
+  }
+
+  // Allows credentials to optionally modify a parent channel's args.
+  // By default, leave channel args as is. The callee takes ownership
+  // of the passed-in channel args, and the caller takes ownership
+  // of the returned channel args.
+  virtual grpc_channel_args* update_arguments(grpc_channel_args* args) {
+    return args;
+  }
+
+  // Attaches control_plane_creds to the local registry, under authority,
+  // if no other creds are currently registered under authority. Returns
+  // true if registered successfully and false if not.
+  bool attach_credentials(
+      const char* authority,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> control_plane_creds);
+
+  // Gets the control plane credentials registered under authority. This
+  // prefers the local control plane creds registry but falls back to the
+  // global registry. Lastly, this returns self but with any attached
+  // call credentials stripped off, in the case that neither the local
+  // registry nor the global registry have an entry for authority.
+  grpc_core::RefCountedPtr<grpc_channel_credentials>
+  get_control_plane_credentials(const char* authority);
+
+  const char* type() const { return type_; }
+
+ private:
+  const char* type_;
+  std::map<grpc_core::UniquePtr<char>,
+           grpc_core::RefCountedPtr<grpc_channel_credentials>,
+           grpc_core::StringLess>
+      local_control_plane_creds_;
+};
+
+/* Util to encapsulate the channel credentials in a channel arg. */
+grpc_arg grpc_channel_credentials_to_arg(grpc_channel_credentials* credentials);
+
+/* Util to get the channel credentials from a channel arg. */
+grpc_channel_credentials* grpc_channel_credentials_from_arg(
+    const grpc_arg* arg);
+
+/* Util to find the channel credentials from channel args. */
+grpc_channel_credentials* grpc_channel_credentials_find_in_args(
+    const grpc_channel_args* args);
+
+/** EXPERIMENTAL.  API MAY CHANGE IN THE FUTURE.
+    Attaches \a control_plane_creds to \a credentials
+    under the key \a authority. Returns false if \a authority
+    is already present, in which case no changes are made.
+    Note that this API is not thread safe. Only one thread may
+    attach control plane creds to a given credentials object at
+    any one time, and new control plane creds must not be
+    attached after \a credentials has been used to create a channel. */
+bool grpc_channel_credentials_attach_credentials(
+    grpc_channel_credentials* credentials, const char* authority,
+    grpc_channel_credentials* control_plane_creds);
+
+/** EXPERIMENTAL.  API MAY CHANGE IN THE FUTURE.
+    Registers \a control_plane_creds in the global registry
+    under the key \a authority. Returns false if \a authority
+    is already present, in which case no changes are made. */
+bool grpc_control_plane_credentials_register(
+    const char* authority, grpc_channel_credentials* control_plane_creds);
+
+/* Initializes global control plane credentials data. */
+void grpc_control_plane_credentials_init();
+
+/* Test only: destroy global control plane credentials data.
+ * This API is meant for use by a few tests that need to
+ * satisdy grpc_core::LeakDetector. */
+void grpc_test_only_control_plane_credentials_destroy();
+
+/* Test only: force re-initialization of global control
+ * plane credentials data if it was previously destroyed.
+ * This API is meant to be used in
+ * tandem with the
+ * grpc_test_only_control_plane_credentials_destroy, for
+ * the few tests that need it. */
+void grpc_test_only_control_plane_credentials_force_init();
+
+/* --- grpc_credentials_mdelem_array. --- */
+
+typedef struct {
+  grpc_mdelem* md = nullptr;
+  size_t size = 0;
+} grpc_credentials_mdelem_array;
+
+/// Takes a new ref to \a md.
+void grpc_credentials_mdelem_array_add(grpc_credentials_mdelem_array* list,
+                                       grpc_mdelem md);
+
+/// Appends all elements from \a src to \a dst, taking a new ref to each one.
+void grpc_credentials_mdelem_array_append(grpc_credentials_mdelem_array* dst,
+                                          grpc_credentials_mdelem_array* src);
+
+void grpc_credentials_mdelem_array_destroy(grpc_credentials_mdelem_array* list);
+
+/* --- grpc_call_credentials. --- */
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_call_credentials
+    : public grpc_core::RefCounted<grpc_call_credentials> {
+ public:
+  explicit grpc_call_credentials(
+      const char* type,
+      grpc_security_level min_security_level = GRPC_PRIVACY_AND_INTEGRITY)
+      : type_(type), min_security_level_(min_security_level) {}
+
+  virtual ~grpc_call_credentials() = default;
+
+  // Returns true if completed synchronously, in which case \a error will
+  // be set to indicate the result.  Otherwise, \a on_request_metadata will
+  // be invoked asynchronously when complete.  \a md_array will be populated
+  // with the resulting metadata once complete.
+  virtual bool get_request_metadata(grpc_polling_entity* pollent,
+                                    grpc_auth_metadata_context context,
+                                    grpc_credentials_mdelem_array* md_array,
+                                    grpc_closure* on_request_metadata,
+                                    grpc_error** error) = 0;
+
+  // Cancels a pending asynchronous operation started by
+  // grpc_call_credentials_get_request_metadata() with the corresponding
+  // value of \a md_array.
+  virtual void cancel_get_request_metadata(
+      grpc_credentials_mdelem_array* md_array, grpc_error* error) = 0;
+
+  virtual grpc_security_level min_security_level() const {
+    return min_security_level_;
+  }
+
+  const char* type() const { return type_; }
+
+ private:
+  const char* type_;
+  const grpc_security_level min_security_level_;
+};
+
+/* Metadata-only credentials with the specified key and value where
+   asynchronicity can be simulated for testing. */
+grpc_call_credentials* grpc_md_only_test_credentials_create(
+    const char* md_key, const char* md_value, bool is_async);
+
+/* --- grpc_server_credentials. --- */
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_server_credentials
+    : public grpc_core::RefCounted<grpc_server_credentials> {
+ public:
+  explicit grpc_server_credentials(const char* type) : type_(type) {}
+
+  virtual ~grpc_server_credentials() { DestroyProcessor(); }
+
+  virtual grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() = 0;
+
+  const char* type() const { return type_; }
+
+  const grpc_auth_metadata_processor& auth_metadata_processor() const {
+    return processor_;
+  }
+  void set_auth_metadata_processor(
+      const grpc_auth_metadata_processor& processor);
+
+ private:
+  void DestroyProcessor() {
+    if (processor_.destroy != nullptr && processor_.state != nullptr) {
+      processor_.destroy(processor_.state);
+    }
+  }
+
+  const char* type_;
+  grpc_auth_metadata_processor processor_ =
+      grpc_auth_metadata_processor();  // Zero-initialize the C struct.
+};
+
+#define GRPC_SERVER_CREDENTIALS_ARG "grpc.server_credentials"
+
+grpc_arg grpc_server_credentials_to_arg(grpc_server_credentials* c);
+grpc_server_credentials* grpc_server_credentials_from_arg(const grpc_arg* arg);
+grpc_server_credentials* grpc_find_server_credentials_in_args(
+    const grpc_channel_args* args);
+
+/* -- Credentials Metadata Request. -- */
+
+struct grpc_credentials_metadata_request {
+  explicit grpc_credentials_metadata_request(
+      grpc_core::RefCountedPtr<grpc_call_credentials> creds)
+      : creds(std::move(creds)) {}
+  ~grpc_credentials_metadata_request() {
+    grpc_http_response_destroy(&response);
+  }
+
+  grpc_core::RefCountedPtr<grpc_call_credentials> creds;
+  grpc_http_response response;
+};
+
+inline grpc_credentials_metadata_request*
+grpc_credentials_metadata_request_create(
+    grpc_core::RefCountedPtr<grpc_call_credentials> creds) {
+  return new grpc_credentials_metadata_request(std::move(creds));
+}
+
+inline void grpc_credentials_metadata_request_destroy(
+    grpc_credentials_metadata_request* r) {
+  delete r;
+}
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials_metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials_metadata.cc
new file mode 100644
index 0000000..703de4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/credentials_metadata.cc	
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#include <grpc/support/alloc.h>
+
+#include <string.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+
+static void mdelem_list_ensure_capacity(grpc_credentials_mdelem_array* list,
+                                        size_t additional_space_needed) {
+  size_t target_size = list->size + additional_space_needed;
+  // Find the next power of two greater than the target size (i.e.,
+  // whenever we add more space, we double what we already have).
+  size_t new_size = 2;
+  while (new_size < target_size) {
+    new_size *= 2;
+  }
+  list->md = static_cast<grpc_mdelem*>(
+      gpr_realloc(list->md, sizeof(grpc_mdelem) * new_size));
+}
+
+void grpc_credentials_mdelem_array_add(grpc_credentials_mdelem_array* list,
+                                       grpc_mdelem md) {
+  mdelem_list_ensure_capacity(list, 1);
+  list->md[list->size++] = GRPC_MDELEM_REF(md);
+}
+
+void grpc_credentials_mdelem_array_append(grpc_credentials_mdelem_array* dst,
+                                          grpc_credentials_mdelem_array* src) {
+  mdelem_list_ensure_capacity(dst, src->size);
+  for (size_t i = 0; i < src->size; ++i) {
+    dst->md[dst->size++] = GRPC_MDELEM_REF(src->md[i]);
+  }
+}
+
+void grpc_credentials_mdelem_array_destroy(
+    grpc_credentials_mdelem_array* list) {
+  for (size_t i = 0; i < list->size; ++i) {
+    GRPC_MDELEM_UNREF(list->md[i]);
+  }
+  gpr_free(list->md);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.cc
new file mode 100644
index 0000000..8fd0493
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.cc	
@@ -0,0 +1,112 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/fake/fake_credentials.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/security/security_connector/fake/fake_security_connector.h"
+
+/* -- Fake transport security credentials. -- */
+
+namespace {
+class grpc_fake_channel_credentials final : public grpc_channel_credentials {
+ public:
+  grpc_fake_channel_credentials()
+      : grpc_channel_credentials(
+            GRPC_CHANNEL_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY) {}
+  ~grpc_fake_channel_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** /*new_args*/) override {
+    return grpc_fake_channel_security_connector_create(
+        this->Ref(), std::move(call_creds), target, args);
+  }
+};
+
+class grpc_fake_server_credentials final : public grpc_server_credentials {
+ public:
+  grpc_fake_server_credentials()
+      : grpc_server_credentials(
+            GRPC_CHANNEL_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY) {}
+  ~grpc_fake_server_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override {
+    return grpc_fake_server_security_connector_create(this->Ref());
+  }
+};
+}  // namespace
+
+grpc_channel_credentials* grpc_fake_transport_security_credentials_create() {
+  return new grpc_fake_channel_credentials();
+}
+
+grpc_server_credentials*
+grpc_fake_transport_security_server_credentials_create() {
+  return new grpc_fake_server_credentials();
+}
+
+grpc_arg grpc_fake_transport_expected_targets_arg(char* expected_targets) {
+  return grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS, expected_targets);
+}
+
+const char* grpc_fake_transport_get_expected_targets(
+    const grpc_channel_args* args) {
+  const grpc_arg* expected_target_arg =
+      grpc_channel_args_find(args, GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS);
+  return grpc_channel_arg_get_string(expected_target_arg);
+}
+
+/* -- Metadata-only test credentials. -- */
+
+bool grpc_md_only_test_credentials::get_request_metadata(
+    grpc_polling_entity* /*pollent*/, grpc_auth_metadata_context /*context*/,
+    grpc_credentials_mdelem_array* md_array, grpc_closure* on_request_metadata,
+    grpc_error** /*error*/) {
+  grpc_credentials_mdelem_array_add(md_array, md_);
+  if (is_async_) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_request_metadata,
+                            GRPC_ERROR_NONE);
+    return false;
+  }
+  return true;
+}
+
+void grpc_md_only_test_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* /*md_array*/, grpc_error* error) {
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_call_credentials* grpc_md_only_test_credentials_create(
+    const char* md_key, const char* md_value, bool is_async) {
+  return new grpc_md_only_test_credentials(md_key, md_value, is_async);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.h
new file mode 100644
index 0000000..411cfa9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/fake/fake_credentials.h	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#define GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS \
+  "grpc.fake_security.expected_targets"
+
+/* -- Fake transport security credentials. -- */
+
+/* Creates a fake transport security credentials object for testing. */
+grpc_channel_credentials* grpc_fake_transport_security_credentials_create(void);
+
+/* Creates a fake server transport security credentials object for testing. */
+grpc_server_credentials* grpc_fake_transport_security_server_credentials_create(
+    void);
+
+/* Used to verify the target names given to the fake transport security
+ * connector.
+ *
+ * The syntax of \a expected_targets by example:
+ * For LB channels:
+ *     "backend_target_1,backend_target_2,...;lb_target_1,lb_target_2,..."
+ * For regular channels:
+ *     "backend_taget_1,backend_target_2,..."
+ *
+ * That is to say, LB channels have a heading list of LB targets separated from
+ * the list of backend targets by a semicolon. For non-LB channels, only the
+ * latter is present. */
+grpc_arg grpc_fake_transport_expected_targets_arg(char* expected_targets);
+
+/* Return the value associated with the expected targets channel arg or NULL */
+const char* grpc_fake_transport_get_expected_targets(
+    const grpc_channel_args* args);
+
+/* --  Metadata-only Test credentials. -- */
+
+class grpc_md_only_test_credentials : public grpc_call_credentials {
+ public:
+  grpc_md_only_test_credentials(const char* md_key, const char* md_value,
+                                bool is_async)
+      : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_OAUTH2,
+                              GRPC_SECURITY_NONE),
+        md_(grpc_mdelem_from_slices(grpc_slice_from_copied_string(md_key),
+                                    grpc_slice_from_copied_string(md_value))),
+        is_async_(is_async) {}
+  ~grpc_md_only_test_credentials() override { GRPC_MDELEM_UNREF(md_); }
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_mdelem md_;
+  bool is_async_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_FAKE_FAKE_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/credentials_generic.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/credentials_generic.cc
new file mode 100644
index 0000000..10ff0f6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/credentials_generic.cc	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/google_default/google_default_credentials.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+
+char* grpc_get_well_known_google_credentials_file_path_impl(void) {
+  char* result = nullptr;
+  char* base = gpr_getenv(GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR);
+  if (base == nullptr) {
+    gpr_log(GPR_ERROR, "Could not get " GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR
+                       " environment variable.");
+    return nullptr;
+  }
+  gpr_asprintf(&result, "%s/%s", base, GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX);
+  gpr_free(base);
+  return result;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.cc
new file mode 100644
index 0000000..58e550e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.cc	
@@ -0,0 +1,388 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/env.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/security/credentials/alts/alts_credentials.h"
+#include "src/core/lib/security/credentials/alts/check_gcp_environment.h"
+#include "src/core/lib/security/credentials/google_default/google_default_credentials.h"
+#include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
+#include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/api_trace.h"
+
+using grpc_core::Json;
+
+/* -- Constants. -- */
+
+#define GRPC_COMPUTE_ENGINE_DETECTION_HOST "metadata.google.internal."
+
+/* -- Default credentials. -- */
+
+/* A sticky bit that will be set only if the result of metadata server detection
+ * is positive. We do not set the bit if the result is negative. Because it
+ * means the detection is done via network test that is unreliable and the
+ * unreliable result should not be referred by successive calls. */
+static int g_metadata_server_available = 0;
+static int g_is_on_gce = 0;
+static gpr_mu g_state_mu;
+/* Protect a metadata_server_detector instance that can be modified by more than
+ * one gRPC threads */
+static gpr_mu* g_polling_mu;
+static gpr_once g_once = GPR_ONCE_INIT;
+static grpc_core::internal::grpc_gce_tenancy_checker g_gce_tenancy_checker =
+    grpc_alts_is_running_on_gcp;
+
+static void init_default_credentials(void) { gpr_mu_init(&g_state_mu); }
+
+typedef struct {
+  grpc_polling_entity pollent;
+  int is_done;
+  int success;
+  grpc_http_response response;
+} metadata_server_detector;
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_google_default_channel_credentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+    const char* target, const grpc_channel_args* args,
+    grpc_channel_args** new_args) {
+  bool is_grpclb_load_balancer = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args, GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER),
+      false);
+  bool is_backend_from_grpclb_load_balancer = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(
+          args, GRPC_ARG_ADDRESS_IS_BACKEND_FROM_GRPCLB_LOAD_BALANCER),
+      false);
+  bool use_alts =
+      is_grpclb_load_balancer || is_backend_from_grpclb_load_balancer;
+  /* Return failure if ALTS is selected but not running on GCE. */
+  if (use_alts && !g_is_on_gce) {
+    gpr_log(GPR_ERROR, "ALTS is selected, but not running on GCE.");
+    return nullptr;
+  }
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector> sc =
+      use_alts ? alts_creds_->create_security_connector(call_creds, target,
+                                                        args, new_args)
+               : ssl_creds_->create_security_connector(call_creds, target, args,
+                                                       new_args);
+  /* grpclb-specific channel args are removed from the channel args set
+   * to ensure backends and fallback adresses will have the same set of channel
+   * args. By doing that, it guarantees the connections to backends will not be
+   * torn down and re-connected when switching in and out of fallback mode.
+   */
+  if (use_alts) {
+    static const char* args_to_remove[] = {
+        GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER,
+        GRPC_ARG_ADDRESS_IS_BACKEND_FROM_GRPCLB_LOAD_BALANCER,
+    };
+    *new_args = grpc_channel_args_copy_and_add_and_remove(
+        args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), nullptr, 0);
+  }
+  return sc;
+}
+
+grpc_channel_args* grpc_google_default_channel_credentials::update_arguments(
+    grpc_channel_args* args) {
+  grpc_channel_args* updated = args;
+  if (grpc_channel_args_find(args, GRPC_ARG_DNS_ENABLE_SRV_QUERIES) ==
+      nullptr) {
+    grpc_arg new_srv_arg = grpc_channel_arg_integer_create(
+        const_cast<char*>(GRPC_ARG_DNS_ENABLE_SRV_QUERIES), true);
+    updated = grpc_channel_args_copy_and_add(args, &new_srv_arg, 1);
+    grpc_channel_args_destroy(args);
+  }
+  return updated;
+}
+
+static void on_metadata_server_detection_http_response(void* user_data,
+                                                       grpc_error* error) {
+  metadata_server_detector* detector =
+      static_cast<metadata_server_detector*>(user_data);
+  if (error == GRPC_ERROR_NONE && detector->response.status == 200 &&
+      detector->response.hdr_count > 0) {
+    /* Internet providers can return a generic response to all requests, so
+       it is necessary to check that metadata header is present also. */
+    size_t i;
+    for (i = 0; i < detector->response.hdr_count; i++) {
+      grpc_http_header* header = &detector->response.hdrs[i];
+      if (strcmp(header->key, "Metadata-Flavor") == 0 &&
+          strcmp(header->value, "Google") == 0) {
+        detector->success = 1;
+        break;
+      }
+    }
+  }
+  gpr_mu_lock(g_polling_mu);
+  detector->is_done = 1;
+  GRPC_LOG_IF_ERROR(
+      "Pollset kick",
+      grpc_pollset_kick(grpc_polling_entity_pollset(&detector->pollent),
+                        nullptr));
+  gpr_mu_unlock(g_polling_mu);
+}
+
+static void destroy_pollset(void* p, grpc_error* /*e*/) {
+  grpc_pollset_destroy(static_cast<grpc_pollset*>(p));
+}
+
+static int is_metadata_server_reachable() {
+  metadata_server_detector detector;
+  grpc_httpcli_request request;
+  grpc_httpcli_context context;
+  grpc_closure destroy_closure;
+  /* The http call is local. If it takes more than one sec, it is for sure not
+     on compute engine. */
+  grpc_millis max_detection_delay = GPR_MS_PER_SEC;
+  grpc_pollset* pollset =
+      static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size()));
+  grpc_pollset_init(pollset, &g_polling_mu);
+  detector.pollent = grpc_polling_entity_create_from_pollset(pollset);
+  detector.is_done = 0;
+  detector.success = 0;
+  memset(&request, 0, sizeof(grpc_httpcli_request));
+  request.host = (char*)GRPC_COMPUTE_ENGINE_DETECTION_HOST;
+  request.http.path = (char*)"/";
+  grpc_httpcli_context_init(&context);
+  grpc_resource_quota* resource_quota =
+      grpc_resource_quota_create("google_default_credentials");
+  grpc_httpcli_get(
+      &context, &detector.pollent, resource_quota, &request,
+      grpc_core::ExecCtx::Get()->Now() + max_detection_delay,
+      GRPC_CLOSURE_CREATE(on_metadata_server_detection_http_response, &detector,
+                          grpc_schedule_on_exec_ctx),
+      &detector.response);
+  grpc_resource_quota_unref_internal(resource_quota);
+  grpc_core::ExecCtx::Get()->Flush();
+  /* Block until we get the response. This is not ideal but this should only be
+    called once for the lifetime of the process by the default credentials. */
+  gpr_mu_lock(g_polling_mu);
+  while (!detector.is_done) {
+    grpc_pollset_worker* worker = nullptr;
+    if (!GRPC_LOG_IF_ERROR(
+            "pollset_work",
+            grpc_pollset_work(grpc_polling_entity_pollset(&detector.pollent),
+                              &worker, GRPC_MILLIS_INF_FUTURE))) {
+      detector.is_done = 1;
+      detector.success = 0;
+    }
+  }
+  gpr_mu_unlock(g_polling_mu);
+  grpc_httpcli_context_destroy(&context);
+  GRPC_CLOSURE_INIT(&destroy_closure, destroy_pollset,
+                    grpc_polling_entity_pollset(&detector.pollent),
+                    grpc_schedule_on_exec_ctx);
+  grpc_pollset_shutdown(grpc_polling_entity_pollset(&detector.pollent),
+                        &destroy_closure);
+  g_polling_mu = nullptr;
+  grpc_core::ExecCtx::Get()->Flush();
+  gpr_free(grpc_polling_entity_pollset(&detector.pollent));
+  grpc_http_response_destroy(&detector.response);
+  return detector.success;
+}
+
+/* Takes ownership of creds_path if not NULL. */
+static grpc_error* create_default_creds_from_path(
+    char* creds_path, grpc_core::RefCountedPtr<grpc_call_credentials>* creds) {
+  grpc_auth_json_key key;
+  grpc_auth_refresh_token token;
+  grpc_core::RefCountedPtr<grpc_call_credentials> result;
+  grpc_slice creds_data = grpc_empty_slice();
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json;
+  grpc_core::StringView str;
+  if (creds_path == nullptr) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("creds_path unset");
+    goto end;
+  }
+  error = grpc_load_file(creds_path, 0, &creds_data);
+  if (error != GRPC_ERROR_NONE) goto end;
+  str = grpc_core::StringView(
+      reinterpret_cast<char*>(GRPC_SLICE_START_PTR(creds_data)),
+      GRPC_SLICE_LENGTH(creds_data));
+  json = Json::Parse(str, &error);
+  if (error != GRPC_ERROR_NONE) goto end;
+  if (json.type() != Json::Type::OBJECT) {
+    error = grpc_error_set_str(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to parse JSON"),
+        GRPC_ERROR_STR_RAW_BYTES, grpc_slice_ref_internal(creds_data));
+    goto end;
+  }
+
+  /* First, try an auth json key. */
+  key = grpc_auth_json_key_create_from_json(json);
+  if (grpc_auth_json_key_is_valid(&key)) {
+    result =
+        grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+            key, grpc_max_auth_token_lifetime());
+    if (result == nullptr) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "grpc_service_account_jwt_access_credentials_create_from_auth_json_"
+          "key failed");
+    }
+    goto end;
+  }
+
+  /* Then try a refresh token if the auth json key was invalid. */
+  token = grpc_auth_refresh_token_create_from_json(json);
+  if (grpc_auth_refresh_token_is_valid(&token)) {
+    result =
+        grpc_refresh_token_credentials_create_from_auth_refresh_token(token);
+    if (result == nullptr) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "grpc_refresh_token_credentials_create_from_auth_refresh_token "
+          "failed");
+    }
+    goto end;
+  }
+
+end:
+  GPR_ASSERT((result == nullptr) + (error == GRPC_ERROR_NONE) == 1);
+  if (creds_path != nullptr) gpr_free(creds_path);
+  grpc_slice_unref_internal(creds_data);
+  *creds = result;
+  return error;
+}
+
+grpc_channel_credentials* grpc_google_default_credentials_create() {
+  grpc_channel_credentials* result = nullptr;
+  grpc_core::RefCountedPtr<grpc_call_credentials> call_creds;
+  grpc_error* error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+      "Failed to create Google credentials");
+  grpc_error* err;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_google_default_credentials_create(void)", 0, ());
+
+  gpr_once_init(&g_once, init_default_credentials);
+
+  /* First, try the environment variable. */
+  err = create_default_creds_from_path(
+      gpr_getenv(GRPC_GOOGLE_CREDENTIALS_ENV_VAR), &call_creds);
+  if (err == GRPC_ERROR_NONE) goto end;
+  error = grpc_error_add_child(error, err);
+
+  /* Then the well-known file. */
+  err = create_default_creds_from_path(
+      grpc_get_well_known_google_credentials_file_path(), &call_creds);
+  if (err == GRPC_ERROR_NONE) goto end;
+  error = grpc_error_add_child(error, err);
+
+  gpr_mu_lock(&g_state_mu);
+
+  /* Try a platform-provided hint for GCE. */
+  if (!g_metadata_server_available) {
+    g_is_on_gce = g_gce_tenancy_checker();
+    g_metadata_server_available = g_is_on_gce;
+  }
+  /* TODO: Add a platform-provided hint for GAE. */
+
+  /* Do a network test for metadata server. */
+  if (!g_metadata_server_available) {
+    g_metadata_server_available = is_metadata_server_reachable();
+  }
+  gpr_mu_unlock(&g_state_mu);
+
+  if (g_metadata_server_available) {
+    call_creds = grpc_core::RefCountedPtr<grpc_call_credentials>(
+        grpc_google_compute_engine_credentials_create(nullptr));
+    if (call_creds == nullptr) {
+      error = grpc_error_add_child(
+          error, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                     "Failed to get credentials from network"));
+    }
+  }
+
+end:
+  if (call_creds != nullptr) {
+    /* Create google default credentials. */
+    grpc_channel_credentials* ssl_creds =
+        grpc_ssl_credentials_create(nullptr, nullptr, nullptr, nullptr);
+    GPR_ASSERT(ssl_creds != nullptr);
+    grpc_alts_credentials_options* options =
+        grpc_alts_credentials_client_options_create();
+    grpc_channel_credentials* alts_creds =
+        grpc_alts_credentials_create(options);
+    grpc_alts_credentials_options_destroy(options);
+    auto creds =
+        grpc_core::MakeRefCounted<grpc_google_default_channel_credentials>(
+            alts_creds != nullptr ? alts_creds->Ref() : nullptr,
+            ssl_creds != nullptr ? ssl_creds->Ref() : nullptr);
+    if (ssl_creds) ssl_creds->Unref();
+    if (alts_creds) alts_creds->Unref();
+    result = grpc_composite_channel_credentials_create(
+        creds.get(), call_creds.get(), nullptr);
+    GPR_ASSERT(result != nullptr);
+  } else {
+    gpr_log(GPR_ERROR, "Could not create google default credentials: %s",
+            grpc_error_string(error));
+  }
+  GRPC_ERROR_UNREF(error);
+  return result;
+}
+
+namespace grpc_core {
+namespace internal {
+
+void set_gce_tenancy_checker_for_testing(grpc_gce_tenancy_checker checker) {
+  g_gce_tenancy_checker = checker;
+}
+
+void grpc_flush_cached_google_default_credentials(void) {
+  grpc_core::ExecCtx exec_ctx;
+  gpr_once_init(&g_once, init_default_credentials);
+  gpr_mu_lock(&g_state_mu);
+  g_metadata_server_available = 0;
+  gpr_mu_unlock(&g_state_mu);
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+/* -- Well known credentials path. -- */
+
+static grpc_well_known_credentials_path_getter creds_path_getter = nullptr;
+
+char* grpc_get_well_known_google_credentials_file_path(void) {
+  if (creds_path_getter != nullptr) return creds_path_getter();
+  return grpc_get_well_known_google_credentials_file_path_impl();
+}
+
+void grpc_override_well_known_credentials_path_getter(
+    grpc_well_known_credentials_path_getter getter) {
+  creds_path_getter = getter;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.h
new file mode 100644
index 0000000..8a945da
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/google_default/google_default_credentials.h	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/credentials/credentials.h"
+
+#define GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY "gcloud"
+#define GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE \
+  "application_default_credentials.json"
+
+#ifdef GPR_WINDOWS
+#define GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR "APPDATA"
+#define GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX \
+  GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY    \
+  "/" GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE
+#else
+#define GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR "HOME"
+#define GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX         \
+  ".config/" GRPC_GOOGLE_CLOUD_SDK_CONFIG_DIRECTORY \
+  "/" GRPC_GOOGLE_WELL_KNOWN_CREDENTIALS_FILE
+#endif
+
+class grpc_google_default_channel_credentials
+    : public grpc_channel_credentials {
+ public:
+  grpc_google_default_channel_credentials(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> alts_creds,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> ssl_creds)
+      : grpc_channel_credentials(GRPC_CHANNEL_CREDENTIALS_TYPE_GOOGLE_DEFAULT),
+        alts_creds_(std::move(alts_creds)),
+        ssl_creds_(std::move(ssl_creds)) {}
+
+  ~grpc_google_default_channel_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_channel_args* update_arguments(grpc_channel_args* args) override;
+
+  const grpc_channel_credentials* alts_creds() const {
+    return alts_creds_.get();
+  }
+  const grpc_channel_credentials* ssl_creds() const { return ssl_creds_.get(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> alts_creds_;
+  grpc_core::RefCountedPtr<grpc_channel_credentials> ssl_creds_;
+};
+
+namespace grpc_core {
+namespace internal {
+
+typedef bool (*grpc_gce_tenancy_checker)(void);
+
+void set_gce_tenancy_checker_for_testing(grpc_gce_tenancy_checker checker);
+
+// TEST-ONLY. Reset the internal global state.
+void grpc_flush_cached_google_default_credentials(void);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_GOOGLE_DEFAULT_GOOGLE_DEFAULT_CREDENTIALS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.cc
new file mode 100644
index 0000000..94e3d28
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.cc	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/iam/iam_credentials.h"
+
+#include <string.h>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+grpc_google_iam_credentials::~grpc_google_iam_credentials() {
+  grpc_credentials_mdelem_array_destroy(&md_array_);
+}
+
+bool grpc_google_iam_credentials::get_request_metadata(
+    grpc_polling_entity* /*pollent*/, grpc_auth_metadata_context /*context*/,
+    grpc_credentials_mdelem_array* md_array,
+    grpc_closure* /*on_request_metadata*/, grpc_error** /*error*/) {
+  grpc_credentials_mdelem_array_append(md_array, &md_array_);
+  return true;
+}
+
+void grpc_google_iam_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* /*md_array*/, grpc_error* error) {
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_google_iam_credentials::grpc_google_iam_credentials(
+    const char* token, const char* authority_selector)
+    : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_IAM) {
+  grpc_mdelem md = grpc_mdelem_from_slices(
+      grpc_slice_from_static_string(GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY),
+      grpc_slice_from_copied_string(token));
+  grpc_credentials_mdelem_array_add(&md_array_, md);
+  GRPC_MDELEM_UNREF(md);
+  md = grpc_mdelem_from_slices(
+      grpc_slice_from_static_string(GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY),
+      grpc_slice_from_copied_string(authority_selector));
+  grpc_credentials_mdelem_array_add(&md_array_, md);
+  GRPC_MDELEM_UNREF(md);
+}
+
+grpc_call_credentials* grpc_google_iam_credentials_create(
+    const char* token, const char* authority_selector, void* reserved) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE(
+      "grpc_iam_credentials_create(token=%s, authority_selector=%s, "
+      "reserved=%p)",
+      3, (token, authority_selector, reserved));
+  GPR_ASSERT(reserved == nullptr);
+  GPR_ASSERT(token != nullptr);
+  GPR_ASSERT(authority_selector != nullptr);
+  return grpc_core::MakeRefCounted<grpc_google_iam_credentials>(
+             token, authority_selector)
+      .release();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.h
new file mode 100644
index 0000000..36f5ee8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/iam/iam_credentials.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+class grpc_google_iam_credentials : public grpc_call_credentials {
+ public:
+  grpc_google_iam_credentials(const char* token,
+                              const char* authority_selector);
+  ~grpc_google_iam_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_credentials_mdelem_array md_array_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_IAM_IAM_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.cc
new file mode 100644
index 0000000..2bb171e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.cc	
@@ -0,0 +1,300 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/security/credentials/jwt/json_token.h"
+
+#include <string.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/security/util/json_util.h"
+#include "src/core/lib/slice/b64.h"
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/bio.h>
+#else
+  #include <openssl/bio.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/evp.h>
+#else
+  #include <openssl/evp.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/pem.h>
+#else
+  #include <openssl/pem.h>
+#endif
+}
+
+using grpc_core::Json;
+
+/* --- Constants. --- */
+
+/* 1 hour max. */
+gpr_timespec grpc_max_auth_token_lifetime() {
+  gpr_timespec out;
+  out.tv_sec = 3600;
+  out.tv_nsec = 0;
+  out.clock_type = GPR_TIMESPAN;
+  return out;
+}
+
+#define GRPC_JWT_RSA_SHA256_ALGORITHM "RS256"
+#define GRPC_JWT_TYPE "JWT"
+
+/* --- Override for testing. --- */
+
+static grpc_jwt_encode_and_sign_override g_jwt_encode_and_sign_override =
+    nullptr;
+
+/* --- grpc_auth_json_key. --- */
+
+int grpc_auth_json_key_is_valid(const grpc_auth_json_key* json_key) {
+  return (json_key != nullptr) &&
+         strcmp(json_key->type, GRPC_AUTH_JSON_TYPE_INVALID);
+}
+
+grpc_auth_json_key grpc_auth_json_key_create_from_json(const Json& json) {
+  grpc_auth_json_key result;
+  BIO* bio = nullptr;
+  const char* prop_value;
+  int success = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  memset(&result, 0, sizeof(grpc_auth_json_key));
+  result.type = GRPC_AUTH_JSON_TYPE_INVALID;
+  if (json.type() == Json::Type::JSON_NULL) {
+    gpr_log(GPR_ERROR, "Invalid json.");
+    goto end;
+  }
+
+  prop_value = grpc_json_get_string_property(json, "type", &error);
+  GRPC_LOG_IF_ERROR("JSON key parsing", error);
+  if (prop_value == nullptr ||
+      strcmp(prop_value, GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT)) {
+    goto end;
+  }
+  result.type = GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT;
+
+  if (!grpc_copy_json_string_property(json, "private_key_id",
+                                      &result.private_key_id) ||
+      !grpc_copy_json_string_property(json, "client_id", &result.client_id) ||
+      !grpc_copy_json_string_property(json, "client_email",
+                                      &result.client_email)) {
+    goto end;
+  }
+
+  prop_value = grpc_json_get_string_property(json, "private_key", &error);
+  GRPC_LOG_IF_ERROR("JSON key parsing", error);
+  if (prop_value == nullptr) {
+    goto end;
+  }
+  bio = BIO_new(BIO_s_mem());
+  success = BIO_puts(bio, prop_value);
+  if ((success < 0) || (static_cast<size_t>(success) != strlen(prop_value))) {
+    gpr_log(GPR_ERROR, "Could not write into openssl BIO.");
+    goto end;
+  }
+  result.private_key =
+      PEM_read_bio_RSAPrivateKey(bio, nullptr, nullptr, (void*)"");
+  if (result.private_key == nullptr) {
+    gpr_log(GPR_ERROR, "Could not deserialize private key.");
+    goto end;
+  }
+  success = 1;
+
+end:
+  if (bio != nullptr) BIO_free(bio);
+  if (!success) grpc_auth_json_key_destruct(&result);
+  return result;
+}
+
+grpc_auth_json_key grpc_auth_json_key_create_from_string(
+    const char* json_string) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json = Json::Parse(json_string, &error);
+  GRPC_LOG_IF_ERROR("JSON key parsing", error);
+  return grpc_auth_json_key_create_from_json(std::move(json));
+}
+
+void grpc_auth_json_key_destruct(grpc_auth_json_key* json_key) {
+  if (json_key == nullptr) return;
+  json_key->type = GRPC_AUTH_JSON_TYPE_INVALID;
+  if (json_key->client_id != nullptr) {
+    gpr_free(json_key->client_id);
+    json_key->client_id = nullptr;
+  }
+  if (json_key->private_key_id != nullptr) {
+    gpr_free(json_key->private_key_id);
+    json_key->private_key_id = nullptr;
+  }
+  if (json_key->client_email != nullptr) {
+    gpr_free(json_key->client_email);
+    json_key->client_email = nullptr;
+  }
+  if (json_key->private_key != nullptr) {
+    RSA_free(json_key->private_key);
+    json_key->private_key = nullptr;
+  }
+}
+
+/* --- jwt encoding and signature. --- */
+
+static char* encoded_jwt_header(const char* key_id, const char* algorithm) {
+  Json json = Json::Object{
+      {"alg", algorithm},
+      {"typ", GRPC_JWT_TYPE},
+      {"kid", key_id},
+  };
+  std::string json_str = json.Dump();
+  return grpc_base64_encode(json_str.c_str(), json_str.size(), 1, 0);
+}
+
+static char* encoded_jwt_claim(const grpc_auth_json_key* json_key,
+                               const char* audience,
+                               gpr_timespec token_lifetime, const char* scope) {
+  gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
+  gpr_timespec expiration = gpr_time_add(now, token_lifetime);
+  if (gpr_time_cmp(token_lifetime, grpc_max_auth_token_lifetime()) > 0) {
+    gpr_log(GPR_INFO, "Cropping token lifetime to maximum allowed value.");
+    expiration = gpr_time_add(now, grpc_max_auth_token_lifetime());
+  }
+
+  Json::Object object = {
+      {"iss", json_key->client_email},
+      {"aud", audience},
+      {"iat", now.tv_sec},
+      {"exp", expiration.tv_sec},
+  };
+  if (scope != nullptr) {
+    object["scope"] = scope;
+  } else {
+    /* Unscoped JWTs need a sub field. */
+    object["sub"] = json_key->client_email;
+  }
+
+  Json json(object);
+  std::string json_str = json.Dump();
+  return grpc_base64_encode(json_str.c_str(), json_str.size(), 1, 0);
+}
+
+static char* dot_concat_and_free_strings(char* str1, char* str2) {
+  size_t str1_len = strlen(str1);
+  size_t str2_len = strlen(str2);
+  size_t result_len = str1_len + 1 /* dot */ + str2_len;
+  char* result =
+      static_cast<char*>(gpr_malloc(result_len + 1 /* NULL terminated */));
+  char* current = result;
+  memcpy(current, str1, str1_len);
+  current += str1_len;
+  *(current++) = '.';
+  memcpy(current, str2, str2_len);
+  current += str2_len;
+  GPR_ASSERT(current >= result);
+  GPR_ASSERT((uintptr_t)(current - result) == result_len);
+  *current = '\0';
+  gpr_free(str1);
+  gpr_free(str2);
+  return result;
+}
+
+const EVP_MD* openssl_digest_from_algorithm(const char* algorithm) {
+  if (strcmp(algorithm, GRPC_JWT_RSA_SHA256_ALGORITHM) == 0) {
+    return EVP_sha256();
+  } else {
+    gpr_log(GPR_ERROR, "Unknown algorithm %s.", algorithm);
+    return nullptr;
+  }
+}
+
+char* compute_and_encode_signature(const grpc_auth_json_key* json_key,
+                                   const char* signature_algorithm,
+                                   const char* to_sign) {
+  const EVP_MD* md = openssl_digest_from_algorithm(signature_algorithm);
+  EVP_MD_CTX* md_ctx = nullptr;
+  EVP_PKEY* key = EVP_PKEY_new();
+  size_t sig_len = 0;
+  unsigned char* sig = nullptr;
+  char* result = nullptr;
+  if (md == nullptr) return nullptr;
+  md_ctx = EVP_MD_CTX_create();
+  if (md_ctx == nullptr) {
+    gpr_log(GPR_ERROR, "Could not create MD_CTX");
+    goto end;
+  }
+  EVP_PKEY_set1_RSA(key, json_key->private_key);
+  if (EVP_DigestSignInit(md_ctx, nullptr, md, nullptr, key) != 1) {
+    gpr_log(GPR_ERROR, "DigestInit failed.");
+    goto end;
+  }
+  if (EVP_DigestSignUpdate(md_ctx, to_sign, strlen(to_sign)) != 1) {
+    gpr_log(GPR_ERROR, "DigestUpdate failed.");
+    goto end;
+  }
+  if (EVP_DigestSignFinal(md_ctx, nullptr, &sig_len) != 1) {
+    gpr_log(GPR_ERROR, "DigestFinal (get signature length) failed.");
+    goto end;
+  }
+  sig = static_cast<unsigned char*>(gpr_malloc(sig_len));
+  if (EVP_DigestSignFinal(md_ctx, sig, &sig_len) != 1) {
+    gpr_log(GPR_ERROR, "DigestFinal (signature compute) failed.");
+    goto end;
+  }
+  result = grpc_base64_encode(sig, sig_len, 1, 0);
+
+end:
+  if (key != nullptr) EVP_PKEY_free(key);
+  if (md_ctx != nullptr) EVP_MD_CTX_destroy(md_ctx);
+  if (sig != nullptr) gpr_free(sig);
+  return result;
+}
+
+char* grpc_jwt_encode_and_sign(const grpc_auth_json_key* json_key,
+                               const char* audience,
+                               gpr_timespec token_lifetime, const char* scope) {
+  if (g_jwt_encode_and_sign_override != nullptr) {
+    return g_jwt_encode_and_sign_override(json_key, audience, token_lifetime,
+                                          scope);
+  } else {
+    const char* sig_algo = GRPC_JWT_RSA_SHA256_ALGORITHM;
+    char* to_sign = dot_concat_and_free_strings(
+        encoded_jwt_header(json_key->private_key_id, sig_algo),
+        encoded_jwt_claim(json_key, audience, token_lifetime, scope));
+    char* sig = compute_and_encode_signature(json_key, sig_algo, to_sign);
+    if (sig == nullptr) {
+      gpr_free(to_sign);
+      return nullptr;
+    }
+    return dot_concat_and_free_strings(to_sign, sig);
+  }
+}
+
+void grpc_jwt_encode_and_sign_set_override(
+    grpc_jwt_encode_and_sign_override func) {
+  g_jwt_encode_and_sign_override = func;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.h
new file mode 100644
index 0000000..10143d3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/json_token.h	
@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+#if COCOAPODS==1
+  #include <openssl_grpc/rsa.h>
+#else
+  #include <openssl/rsa.h>
+#endif
+
+#include "src/core/lib/json/json.h"
+
+/* --- Constants. --- */
+
+#define GRPC_JWT_OAUTH2_AUDIENCE "https://oauth2.googleapis.com/token"
+
+/* --- auth_json_key parsing. --- */
+
+typedef struct {
+  const char* type;
+  char* private_key_id;
+  char* client_id;
+  char* client_email;
+  RSA* private_key;
+} grpc_auth_json_key;
+
+/* Returns 1 if the object is valid, 0 otherwise. */
+int grpc_auth_json_key_is_valid(const grpc_auth_json_key* json_key);
+
+/* Creates a json_key object from string. Returns an invalid object if a parsing
+   error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_string(
+    const char* json_string);
+
+/* Creates a json_key object from parsed json. Returns an invalid object if a
+   parsing error has been encountered. */
+grpc_auth_json_key grpc_auth_json_key_create_from_json(
+    const grpc_core::Json& json);
+
+/* Destructs the object. */
+void grpc_auth_json_key_destruct(grpc_auth_json_key* json_key);
+
+/* --- json token encoding and signing. --- */
+
+/* Caller is responsible for calling gpr_free on the returned value. May return
+   NULL on invalid input. The scope parameter may be NULL. */
+char* grpc_jwt_encode_and_sign(const grpc_auth_json_key* json_key,
+                               const char* audience,
+                               gpr_timespec token_lifetime, const char* scope);
+
+/* Override encode_and_sign function for testing. */
+typedef char* (*grpc_jwt_encode_and_sign_override)(
+    const grpc_auth_json_key* json_key, const char* audience,
+    gpr_timespec token_lifetime, const char* scope);
+
+/* Set a custom encode_and_sign override for testing. */
+void grpc_jwt_encode_and_sign_set_override(
+    grpc_jwt_encode_and_sign_override func);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JSON_TOKEN_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.cc
new file mode 100644
index 0000000..bed594e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.cc	
@@ -0,0 +1,172 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
+
+#include <inttypes.h>
+#include <string.h>
+
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+using grpc_core::Json;
+
+void grpc_service_account_jwt_access_credentials::reset_cache() {
+  GRPC_MDELEM_UNREF(cached_.jwt_md);
+  cached_.jwt_md = GRPC_MDNULL;
+  if (cached_.service_url != nullptr) {
+    gpr_free(cached_.service_url);
+    cached_.service_url = nullptr;
+  }
+  cached_.jwt_expiration = gpr_inf_past(GPR_CLOCK_REALTIME);
+}
+
+grpc_service_account_jwt_access_credentials::
+    ~grpc_service_account_jwt_access_credentials() {
+  grpc_auth_json_key_destruct(&key_);
+  reset_cache();
+  gpr_mu_destroy(&cache_mu_);
+}
+
+bool grpc_service_account_jwt_access_credentials::get_request_metadata(
+    grpc_polling_entity* /*pollent*/, grpc_auth_metadata_context context,
+    grpc_credentials_mdelem_array* md_array,
+    grpc_closure* /*on_request_metadata*/, grpc_error** error) {
+  gpr_timespec refresh_threshold = gpr_time_from_seconds(
+      GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS, GPR_TIMESPAN);
+
+  /* See if we can return a cached jwt. */
+  grpc_mdelem jwt_md = GRPC_MDNULL;
+  {
+    gpr_mu_lock(&cache_mu_);
+    if (cached_.service_url != nullptr &&
+        strcmp(cached_.service_url, context.service_url) == 0 &&
+        !GRPC_MDISNULL(cached_.jwt_md) &&
+        (gpr_time_cmp(
+             gpr_time_sub(cached_.jwt_expiration, gpr_now(GPR_CLOCK_REALTIME)),
+             refresh_threshold) > 0)) {
+      jwt_md = GRPC_MDELEM_REF(cached_.jwt_md);
+    }
+    gpr_mu_unlock(&cache_mu_);
+  }
+
+  if (GRPC_MDISNULL(jwt_md)) {
+    char* jwt = nullptr;
+    /* Generate a new jwt. */
+    gpr_mu_lock(&cache_mu_);
+    reset_cache();
+    jwt = grpc_jwt_encode_and_sign(&key_, context.service_url, jwt_lifetime_,
+                                   nullptr);
+    if (jwt != nullptr) {
+      char* md_value;
+      gpr_asprintf(&md_value, "Bearer %s", jwt);
+      gpr_free(jwt);
+      cached_.jwt_expiration =
+          gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), jwt_lifetime_);
+      cached_.service_url = gpr_strdup(context.service_url);
+      cached_.jwt_md = grpc_mdelem_from_slices(
+          grpc_slice_from_static_string(GRPC_AUTHORIZATION_METADATA_KEY),
+          grpc_slice_from_copied_string(md_value));
+      gpr_free(md_value);
+      jwt_md = GRPC_MDELEM_REF(cached_.jwt_md);
+    }
+    gpr_mu_unlock(&cache_mu_);
+  }
+
+  if (!GRPC_MDISNULL(jwt_md)) {
+    grpc_credentials_mdelem_array_add(md_array, jwt_md);
+    GRPC_MDELEM_UNREF(jwt_md);
+  } else {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Could not generate JWT.");
+  }
+  return true;
+}
+
+void grpc_service_account_jwt_access_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* /*md_array*/, grpc_error* error) {
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_service_account_jwt_access_credentials::
+    grpc_service_account_jwt_access_credentials(grpc_auth_json_key key,
+                                                gpr_timespec token_lifetime)
+    : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_JWT), key_(key) {
+  gpr_timespec max_token_lifetime = grpc_max_auth_token_lifetime();
+  if (gpr_time_cmp(token_lifetime, max_token_lifetime) > 0) {
+    gpr_log(GPR_INFO,
+            "Cropping token lifetime to maximum allowed value (%d secs).",
+            static_cast<int>(max_token_lifetime.tv_sec));
+    token_lifetime = grpc_max_auth_token_lifetime();
+  }
+  jwt_lifetime_ = token_lifetime;
+  gpr_mu_init(&cache_mu_);
+  reset_cache();
+}
+
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+    grpc_auth_json_key key, gpr_timespec token_lifetime) {
+  if (!grpc_auth_json_key_is_valid(&key)) {
+    gpr_log(GPR_ERROR, "Invalid input for jwt credentials creation");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_service_account_jwt_access_credentials>(
+      key, token_lifetime);
+}
+
+static char* redact_private_key(const char* json_key) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json = Json::Parse(json_key, &error);
+  if (error != GRPC_ERROR_NONE || json.type() != Json::Type::OBJECT) {
+    GRPC_ERROR_UNREF(error);
+    return gpr_strdup("<Json failed to parse.>");
+  }
+  (*json.mutable_object())["private_key"] = "<redacted>";
+  return gpr_strdup(json.Dump(/*indent=*/2).c_str());
+}
+
+grpc_call_credentials* grpc_service_account_jwt_access_credentials_create(
+    const char* json_key, gpr_timespec token_lifetime, void* reserved) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) {
+    char* clean_json = redact_private_key(json_key);
+    gpr_log(GPR_INFO,
+            "grpc_service_account_jwt_access_credentials_create("
+            "json_key=%s, "
+            "token_lifetime="
+            "gpr_timespec { tv_sec: %" PRId64
+            ", tv_nsec: %d, clock_type: %d }, "
+            "reserved=%p)",
+            clean_json, token_lifetime.tv_sec, token_lifetime.tv_nsec,
+            static_cast<int>(token_lifetime.clock_type), reserved);
+    gpr_free(clean_json);
+  }
+  GPR_ASSERT(reserved == nullptr);
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  return grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+             grpc_auth_json_key_create_from_string(json_key), token_lifetime)
+      .release();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.h
new file mode 100644
index 0000000..5af909f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_credentials.h	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/jwt/json_token.h"
+
+class grpc_service_account_jwt_access_credentials
+    : public grpc_call_credentials {
+ public:
+  grpc_service_account_jwt_access_credentials(grpc_auth_json_key key,
+                                              gpr_timespec token_lifetime);
+  ~grpc_service_account_jwt_access_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  const gpr_timespec& jwt_lifetime() const { return jwt_lifetime_; }
+  const grpc_auth_json_key& key() const { return key_; }
+
+ private:
+  void reset_cache();
+
+  // Have a simple cache for now with just 1 entry. We could have a map based on
+  // the service_url for a more sophisticated one.
+  gpr_mu cache_mu_;
+  struct {
+    grpc_mdelem jwt_md = GRPC_MDNULL;
+    char* service_url = nullptr;
+    gpr_timespec jwt_expiration;
+  } cached_;
+
+  grpc_auth_json_key key_;
+  gpr_timespec jwt_lifetime_;
+};
+
+// Private constructor for jwt credentials from an already parsed json key.
+// Takes ownership of the key.
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+    grpc_auth_json_key key, gpr_timespec token_lifetime);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.cc
new file mode 100644
index 0000000..27bd962
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.cc	
@@ -0,0 +1,944 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include "src/core/lib/security/credentials/jwt/jwt_verifier.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/bn.h>
+#else
+  #include <openssl/bn.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/pem.h>
+#else
+  #include <openssl/pem.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/rsa.h>
+#else
+  #include <openssl/rsa.h>
+#endif
+}
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/slice/b64.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/ssl_types.h"
+
+using grpc_core::Json;
+
+/* --- Utils. --- */
+
+const char* grpc_jwt_verifier_status_to_string(
+    grpc_jwt_verifier_status status) {
+  switch (status) {
+    case GRPC_JWT_VERIFIER_OK:
+      return "OK";
+    case GRPC_JWT_VERIFIER_BAD_SIGNATURE:
+      return "BAD_SIGNATURE";
+    case GRPC_JWT_VERIFIER_BAD_FORMAT:
+      return "BAD_FORMAT";
+    case GRPC_JWT_VERIFIER_BAD_AUDIENCE:
+      return "BAD_AUDIENCE";
+    case GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR:
+      return "KEY_RETRIEVAL_ERROR";
+    case GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE:
+      return "TIME_CONSTRAINT_FAILURE";
+    case GRPC_JWT_VERIFIER_GENERIC_ERROR:
+      return "GENERIC_ERROR";
+    default:
+      return "UNKNOWN";
+  }
+}
+
+static const EVP_MD* evp_md_from_alg(const char* alg) {
+  if (strcmp(alg, "RS256") == 0) {
+    return EVP_sha256();
+  } else if (strcmp(alg, "RS384") == 0) {
+    return EVP_sha384();
+  } else if (strcmp(alg, "RS512") == 0) {
+    return EVP_sha512();
+  } else {
+    return nullptr;
+  }
+}
+
+static Json parse_json_part_from_jwt(const char* str, size_t len) {
+  grpc_slice slice = grpc_base64_decode_with_len(str, len, 1);
+  if (GRPC_SLICE_IS_EMPTY(slice)) {
+    gpr_log(GPR_ERROR, "Invalid base64.");
+    return Json();  // JSON null
+  }
+  grpc_core::StringView string(
+      reinterpret_cast<char*>(GRPC_SLICE_START_PTR(slice)),
+      GRPC_SLICE_LENGTH(slice));
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json = Json::Parse(string, &error);
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "JSON parse error: %s", grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+    json = Json();  // JSON null
+  }
+  grpc_slice_unref_internal(slice);
+  return json;
+}
+
+static const char* validate_string_field(const Json& json, const char* key) {
+  if (json.type() != Json::Type::STRING) {
+    gpr_log(GPR_ERROR, "Invalid %s field", key);
+    return nullptr;
+  }
+  return json.string_value().c_str();
+}
+
+static gpr_timespec validate_time_field(const Json& json, const char* key) {
+  gpr_timespec result = gpr_time_0(GPR_CLOCK_REALTIME);
+  if (json.type() != Json::Type::NUMBER) {
+    gpr_log(GPR_ERROR, "Invalid %s field", key);
+    return result;
+  }
+  result.tv_sec = strtol(json.string_value().c_str(), nullptr, 10);
+  return result;
+}
+
+/* --- JOSE header. see http://tools.ietf.org/html/rfc7515#section-4 --- */
+
+typedef struct {
+  const char* alg;
+  const char* kid;
+  const char* typ;
+  /* TODO(jboeuf): Add others as needed (jku, jwk, x5u, x5c and so on...). */
+  grpc_core::ManualConstructor<Json> json;
+} jose_header;
+
+static void jose_header_destroy(jose_header* h) {
+  h->json.Destroy();
+  gpr_free(h);
+}
+
+static jose_header* jose_header_from_json(Json json) {
+  const char* alg_value;
+  Json::Object::const_iterator it;
+  jose_header* h = static_cast<jose_header*>(gpr_zalloc(sizeof(jose_header)));
+  if (json.type() != Json::Type::OBJECT) {
+    gpr_log(GPR_ERROR, "JSON value is not an object");
+    goto error;
+  }
+  // Check alg field.
+  it = json.object_value().find("alg");
+  if (it == json.object_value().end()) {
+    gpr_log(GPR_ERROR, "Missing alg field.");
+    goto error;
+  }
+  /* We only support RSA-1.5 signatures for now.
+     Beware of this if we add HMAC support:
+     https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
+   */
+  alg_value = it->second.string_value().c_str();
+  if (it->second.type() != Json::Type::STRING || strncmp(alg_value, "RS", 2) ||
+      evp_md_from_alg(alg_value) == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid alg field");
+    goto error;
+  }
+  h->alg = alg_value;
+  // Check typ field.
+  it = json.object_value().find("typ");
+  if (it != json.object_value().end()) {
+    h->typ = validate_string_field(it->second, "typ");
+    if (h->typ == nullptr) goto error;
+  }
+  // Check kid field.
+  it = json.object_value().find("kid");
+  if (it != json.object_value().end()) {
+    h->kid = validate_string_field(it->second, "kid");
+    if (h->kid == nullptr) goto error;
+  }
+  h->json.Init(std::move(json));
+  return h;
+
+error:
+  jose_header_destroy(h);
+  return nullptr;
+}
+
+/* --- JWT claims. see http://tools.ietf.org/html/rfc7519#section-4.1 */
+
+struct grpc_jwt_claims {
+  /* Well known properties already parsed. */
+  const char* sub;
+  const char* iss;
+  const char* aud;
+  const char* jti;
+  gpr_timespec iat;
+  gpr_timespec exp;
+  gpr_timespec nbf;
+
+  grpc_core::ManualConstructor<Json> json;
+};
+
+void grpc_jwt_claims_destroy(grpc_jwt_claims* claims) {
+  claims->json.Destroy();
+  gpr_free(claims);
+}
+
+const Json* grpc_jwt_claims_json(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return nullptr;
+  return claims->json.get();
+}
+
+const char* grpc_jwt_claims_subject(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return nullptr;
+  return claims->sub;
+}
+
+const char* grpc_jwt_claims_issuer(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return nullptr;
+  return claims->iss;
+}
+
+const char* grpc_jwt_claims_id(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return nullptr;
+  return claims->jti;
+}
+
+const char* grpc_jwt_claims_audience(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return nullptr;
+  return claims->aud;
+}
+
+gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return gpr_inf_past(GPR_CLOCK_REALTIME);
+  return claims->iat;
+}
+
+gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return gpr_inf_future(GPR_CLOCK_REALTIME);
+  return claims->exp;
+}
+
+gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims* claims) {
+  if (claims == nullptr) return gpr_inf_past(GPR_CLOCK_REALTIME);
+  return claims->nbf;
+}
+
+grpc_jwt_claims* grpc_jwt_claims_from_json(Json json) {
+  grpc_jwt_claims* claims =
+      static_cast<grpc_jwt_claims*>(gpr_zalloc(sizeof(grpc_jwt_claims)));
+  claims->json.Init(std::move(json));
+  claims->iat = gpr_inf_past(GPR_CLOCK_REALTIME);
+  claims->nbf = gpr_inf_past(GPR_CLOCK_REALTIME);
+  claims->exp = gpr_inf_future(GPR_CLOCK_REALTIME);
+
+  /* Per the spec, all fields are optional. */
+  for (const auto& p : claims->json->object_value()) {
+    if (p.first == "sub") {
+      claims->sub = validate_string_field(p.second, "sub");
+      if (claims->sub == nullptr) goto error;
+    } else if (p.first == "iss") {
+      claims->iss = validate_string_field(p.second, "iss");
+      if (claims->iss == nullptr) goto error;
+    } else if (p.first == "aud") {
+      claims->aud = validate_string_field(p.second, "aud");
+      if (claims->aud == nullptr) goto error;
+    } else if (p.first == "jti") {
+      claims->jti = validate_string_field(p.second, "jti");
+      if (claims->jti == nullptr) goto error;
+    } else if (p.first == "iat") {
+      claims->iat = validate_time_field(p.second, "iat");
+      if (gpr_time_cmp(claims->iat, gpr_time_0(GPR_CLOCK_REALTIME)) == 0) {
+        goto error;
+      }
+    } else if (p.first == "exp") {
+      claims->exp = validate_time_field(p.second, "exp");
+      if (gpr_time_cmp(claims->exp, gpr_time_0(GPR_CLOCK_REALTIME)) == 0) {
+        goto error;
+      }
+    } else if (p.first == "nbf") {
+      claims->nbf = validate_time_field(p.second, "nbf");
+      if (gpr_time_cmp(claims->nbf, gpr_time_0(GPR_CLOCK_REALTIME)) == 0) {
+        goto error;
+      }
+    }
+  }
+  return claims;
+
+error:
+  grpc_jwt_claims_destroy(claims);
+  return nullptr;
+}
+
+grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims* claims,
+                                               const char* audience) {
+  gpr_timespec skewed_now;
+  int audience_ok;
+
+  GPR_ASSERT(claims != nullptr);
+
+  skewed_now =
+      gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), grpc_jwt_verifier_clock_skew);
+  if (gpr_time_cmp(skewed_now, claims->nbf) < 0) {
+    gpr_log(GPR_ERROR, "JWT is not valid yet.");
+    return GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE;
+  }
+  skewed_now =
+      gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), grpc_jwt_verifier_clock_skew);
+  if (gpr_time_cmp(skewed_now, claims->exp) > 0) {
+    gpr_log(GPR_ERROR, "JWT is expired.");
+    return GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE;
+  }
+
+  /* This should be probably up to the upper layer to decide but let's harcode
+     the 99% use case here for email issuers, where the JWT must be self
+     issued. */
+  if (grpc_jwt_issuer_email_domain(claims->iss) != nullptr &&
+      claims->sub != nullptr && strcmp(claims->iss, claims->sub) != 0) {
+    gpr_log(GPR_ERROR,
+            "Email issuer (%s) cannot assert another subject (%s) than itself.",
+            claims->iss, claims->sub);
+    return GRPC_JWT_VERIFIER_BAD_SUBJECT;
+  }
+
+  if (audience == nullptr) {
+    audience_ok = claims->aud == nullptr;
+  } else {
+    audience_ok = claims->aud != nullptr && strcmp(audience, claims->aud) == 0;
+  }
+  if (!audience_ok) {
+    gpr_log(GPR_ERROR, "Audience mismatch: expected %s and found %s.",
+            audience == nullptr ? "NULL" : audience,
+            claims->aud == nullptr ? "NULL" : claims->aud);
+    return GRPC_JWT_VERIFIER_BAD_AUDIENCE;
+  }
+  return GRPC_JWT_VERIFIER_OK;
+}
+
+/* --- verifier_cb_ctx object. --- */
+
+typedef enum {
+  HTTP_RESPONSE_OPENID = 0,
+  HTTP_RESPONSE_KEYS,
+  HTTP_RESPONSE_COUNT /* must be last */
+} http_response_index;
+
+typedef struct {
+  grpc_jwt_verifier* verifier;
+  grpc_polling_entity pollent;
+  jose_header* header;
+  grpc_jwt_claims* claims;
+  char* audience;
+  grpc_slice signature;
+  grpc_slice signed_data;
+  void* user_data;
+  grpc_jwt_verification_done_cb user_cb;
+  grpc_http_response responses[HTTP_RESPONSE_COUNT];
+} verifier_cb_ctx;
+
+/* Takes ownership of the header, claims and signature. */
+static verifier_cb_ctx* verifier_cb_ctx_create(
+    grpc_jwt_verifier* verifier, grpc_pollset* pollset, jose_header* header,
+    grpc_jwt_claims* claims, const char* audience, const grpc_slice& signature,
+    const char* signed_jwt, size_t signed_jwt_len, void* user_data,
+    grpc_jwt_verification_done_cb cb) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  verifier_cb_ctx* ctx =
+      static_cast<verifier_cb_ctx*>(gpr_zalloc(sizeof(verifier_cb_ctx)));
+  ctx->verifier = verifier;
+  ctx->pollent = grpc_polling_entity_create_from_pollset(pollset);
+  ctx->header = header;
+  ctx->audience = gpr_strdup(audience);
+  ctx->claims = claims;
+  ctx->signature = signature;
+  ctx->signed_data = grpc_slice_from_copied_buffer(signed_jwt, signed_jwt_len);
+  ctx->user_data = user_data;
+  ctx->user_cb = cb;
+
+  return ctx;
+}
+
+void verifier_cb_ctx_destroy(verifier_cb_ctx* ctx) {
+  if (ctx->audience != nullptr) gpr_free(ctx->audience);
+  if (ctx->claims != nullptr) grpc_jwt_claims_destroy(ctx->claims);
+  grpc_slice_unref_internal(ctx->signature);
+  grpc_slice_unref_internal(ctx->signed_data);
+  jose_header_destroy(ctx->header);
+  for (size_t i = 0; i < HTTP_RESPONSE_COUNT; i++) {
+    grpc_http_response_destroy(&ctx->responses[i]);
+  }
+  /* TODO: see what to do with claims... */
+  gpr_free(ctx);
+}
+
+/* --- grpc_jwt_verifier object. --- */
+
+/* Clock skew defaults to one minute. */
+gpr_timespec grpc_jwt_verifier_clock_skew = {60, 0, GPR_TIMESPAN};
+
+/* Max delay defaults to one minute. */
+grpc_millis grpc_jwt_verifier_max_delay = 60 * GPR_MS_PER_SEC;
+
+typedef struct {
+  char* email_domain;
+  char* key_url_prefix;
+} email_key_mapping;
+
+struct grpc_jwt_verifier {
+  email_key_mapping* mappings;
+  size_t num_mappings; /* Should be very few, linear search ok. */
+  size_t allocated_mappings;
+  grpc_httpcli_context http_ctx;
+};
+
+static Json json_from_http(const grpc_httpcli_response* response) {
+  if (response == nullptr) {
+    gpr_log(GPR_ERROR, "HTTP response is NULL.");
+    return Json();  // JSON null
+  }
+  if (response->status != 200) {
+    gpr_log(GPR_ERROR, "Call to http server failed with error %d.",
+            response->status);
+    return Json();  // JSON null
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json = Json::Parse(
+      grpc_core::StringView(response->body, response->body_length), &error);
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "Invalid JSON found in response.");
+    return Json();  // JSON null
+  }
+  return json;
+}
+
+static const Json* find_property_by_name(const Json& json, const char* name) {
+  auto it = json.object_value().find(name);
+  if (it == json.object_value().end()) {
+    return nullptr;
+  }
+  return &it->second;
+}
+
+static EVP_PKEY* extract_pkey_from_x509(const char* x509_str) {
+  X509* x509 = nullptr;
+  EVP_PKEY* result = nullptr;
+  BIO* bio = BIO_new(BIO_s_mem());
+  size_t len = strlen(x509_str);
+  GPR_ASSERT(len < INT_MAX);
+  BIO_write(bio, x509_str, static_cast<int>(len));
+  x509 = PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
+  if (x509 == nullptr) {
+    gpr_log(GPR_ERROR, "Unable to parse x509 cert.");
+    goto end;
+  }
+  result = X509_get_pubkey(x509);
+  if (result == nullptr) {
+    gpr_log(GPR_ERROR, "Cannot find public key in X509 cert.");
+  }
+
+end:
+  BIO_free(bio);
+  X509_free(x509);
+  return result;
+}
+
+static BIGNUM* bignum_from_base64(const char* b64) {
+  BIGNUM* result = nullptr;
+  grpc_slice bin;
+
+  if (b64 == nullptr) return nullptr;
+  bin = grpc_base64_decode(b64, 1);
+  if (GRPC_SLICE_IS_EMPTY(bin)) {
+    gpr_log(GPR_ERROR, "Invalid base64 for big num.");
+    return nullptr;
+  }
+  result = BN_bin2bn(GRPC_SLICE_START_PTR(bin),
+                     TSI_SIZE_AS_SIZE(GRPC_SLICE_LENGTH(bin)), nullptr);
+  grpc_slice_unref_internal(bin);
+  return result;
+}
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+
+// Provide compatibility across OpenSSL 1.02 and 1.1.
+static int RSA_set0_key(RSA* r, BIGNUM* n, BIGNUM* e, BIGNUM* d) {
+  /* If the fields n and e in r are NULL, the corresponding input
+   * parameters MUST be non-NULL for n and e.  d may be
+   * left NULL (in case only the public key is used).
+   */
+  if ((r->n == nullptr && n == nullptr) || (r->e == nullptr && e == nullptr)) {
+    return 0;
+  }
+
+  if (n != nullptr) {
+    BN_free(r->n);
+    r->n = n;
+  }
+  if (e != nullptr) {
+    BN_free(r->e);
+    r->e = e;
+  }
+  if (d != nullptr) {
+    BN_free(r->d);
+    r->d = d;
+  }
+
+  return 1;
+}
+#endif  // OPENSSL_VERSION_NUMBER < 0x10100000L
+
+static EVP_PKEY* pkey_from_jwk(const Json& json, const char* kty) {
+  RSA* rsa = nullptr;
+  EVP_PKEY* result = nullptr;
+  BIGNUM* tmp_n = nullptr;
+  BIGNUM* tmp_e = nullptr;
+  Json::Object::const_iterator it;
+
+  GPR_ASSERT(json.type() == Json::Type::OBJECT);
+  GPR_ASSERT(kty != nullptr);
+  if (strcmp(kty, "RSA") != 0) {
+    gpr_log(GPR_ERROR, "Unsupported key type %s.", kty);
+    goto end;
+  }
+  rsa = RSA_new();
+  if (rsa == nullptr) {
+    gpr_log(GPR_ERROR, "Could not create rsa key.");
+    goto end;
+  }
+  it = json.object_value().find("n");
+  if (it == json.object_value().end()) {
+    gpr_log(GPR_ERROR, "Missing RSA public key field.");
+    goto end;
+  }
+  tmp_n = bignum_from_base64(validate_string_field(it->second, "n"));
+  if (tmp_n == nullptr) goto end;
+  it = json.object_value().find("e");
+  if (it == json.object_value().end()) {
+    gpr_log(GPR_ERROR, "Missing RSA public key field.");
+    goto end;
+  }
+  tmp_e = bignum_from_base64(validate_string_field(it->second, "e"));
+  if (tmp_e == nullptr) goto end;
+  if (!RSA_set0_key(rsa, tmp_n, tmp_e, nullptr)) {
+    gpr_log(GPR_ERROR, "Cannot set RSA key from inputs.");
+    goto end;
+  }
+  /* RSA_set0_key takes ownership on success. */
+  tmp_n = nullptr;
+  tmp_e = nullptr;
+  result = EVP_PKEY_new();
+  EVP_PKEY_set1_RSA(result, rsa); /* uprefs rsa. */
+
+end:
+  RSA_free(rsa);
+  BN_free(tmp_n);
+  BN_free(tmp_e);
+  return result;
+}
+
+static EVP_PKEY* find_verification_key(const Json& json, const char* header_alg,
+                                       const char* header_kid) {
+  /* Try to parse the json as a JWK set:
+     https://tools.ietf.org/html/rfc7517#section-5. */
+  const Json* jwt_keys = find_property_by_name(json, "keys");
+  if (jwt_keys == nullptr) {
+    /* Use the google proprietary format which is:
+       { <kid1>: <x5091>, <kid2>: <x5092>, ... } */
+    const Json* cur = find_property_by_name(json, header_kid);
+    if (cur == nullptr) return nullptr;
+    return extract_pkey_from_x509(cur->string_value().c_str());
+  }
+  if (jwt_keys->type() != Json::Type::ARRAY) {
+    gpr_log(GPR_ERROR,
+            "Unexpected value type of keys property in jwks key set.");
+    return nullptr;
+  }
+  /* Key format is specified in:
+     https://tools.ietf.org/html/rfc7518#section-6. */
+  for (const Json& jkey : jwt_keys->array_value()) {
+    if (jkey.type() != Json::Type::OBJECT) continue;
+    const char* alg = nullptr;
+    auto it = jkey.object_value().find("alg");
+    if (it != jkey.object_value().end()) {
+      alg = validate_string_field(it->second, "alg");
+    }
+    const char* kid = nullptr;
+    it = jkey.object_value().find("kid");
+    if (it != jkey.object_value().end()) {
+      kid = validate_string_field(it->second, "kid");
+    }
+    const char* kty = nullptr;
+    it = jkey.object_value().find("kty");
+    if (it != jkey.object_value().end()) {
+      kty = validate_string_field(it->second, "kty");
+    }
+    if (alg != nullptr && kid != nullptr && kty != nullptr &&
+        strcmp(kid, header_kid) == 0 && strcmp(alg, header_alg) == 0) {
+      return pkey_from_jwk(jkey, kty);
+    }
+  }
+  gpr_log(GPR_ERROR,
+          "Could not find matching key in key set for kid=%s and alg=%s",
+          header_kid, header_alg);
+  return nullptr;
+}
+
+static int verify_jwt_signature(EVP_PKEY* key, const char* alg,
+                                const grpc_slice& signature,
+                                const grpc_slice& signed_data) {
+  EVP_MD_CTX* md_ctx = EVP_MD_CTX_create();
+  const EVP_MD* md = evp_md_from_alg(alg);
+  int result = 0;
+
+  GPR_ASSERT(md != nullptr); /* Checked before. */
+  if (md_ctx == nullptr) {
+    gpr_log(GPR_ERROR, "Could not create EVP_MD_CTX.");
+    goto end;
+  }
+  if (EVP_DigestVerifyInit(md_ctx, nullptr, md, nullptr, key) != 1) {
+    gpr_log(GPR_ERROR, "EVP_DigestVerifyInit failed.");
+    goto end;
+  }
+  if (EVP_DigestVerifyUpdate(md_ctx, GRPC_SLICE_START_PTR(signed_data),
+                             GRPC_SLICE_LENGTH(signed_data)) != 1) {
+    gpr_log(GPR_ERROR, "EVP_DigestVerifyUpdate failed.");
+    goto end;
+  }
+  if (EVP_DigestVerifyFinal(md_ctx, GRPC_SLICE_START_PTR(signature),
+                            GRPC_SLICE_LENGTH(signature)) != 1) {
+    gpr_log(GPR_ERROR, "JWT signature verification failed.");
+    goto end;
+  }
+  result = 1;
+
+end:
+  EVP_MD_CTX_destroy(md_ctx);
+  return result;
+}
+
+static void on_keys_retrieved(void* user_data, grpc_error* /*error*/) {
+  verifier_cb_ctx* ctx = static_cast<verifier_cb_ctx*>(user_data);
+  Json json = json_from_http(&ctx->responses[HTTP_RESPONSE_KEYS]);
+  EVP_PKEY* verification_key = nullptr;
+  grpc_jwt_verifier_status status = GRPC_JWT_VERIFIER_GENERIC_ERROR;
+  grpc_jwt_claims* claims = nullptr;
+
+  if (json.type() == Json::Type::JSON_NULL) {
+    status = GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR;
+    goto end;
+  }
+  verification_key =
+      find_verification_key(json, ctx->header->alg, ctx->header->kid);
+  if (verification_key == nullptr) {
+    gpr_log(GPR_ERROR, "Could not find verification key with kid %s.",
+            ctx->header->kid);
+    status = GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR;
+    goto end;
+  }
+
+  if (!verify_jwt_signature(verification_key, ctx->header->alg, ctx->signature,
+                            ctx->signed_data)) {
+    status = GRPC_JWT_VERIFIER_BAD_SIGNATURE;
+    goto end;
+  }
+
+  status = grpc_jwt_claims_check(ctx->claims, ctx->audience);
+  if (status == GRPC_JWT_VERIFIER_OK) {
+    /* Pass ownership. */
+    claims = ctx->claims;
+    ctx->claims = nullptr;
+  }
+
+end:
+  EVP_PKEY_free(verification_key);
+  ctx->user_cb(ctx->user_data, status, claims);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+static void on_openid_config_retrieved(void* user_data, grpc_error* /*error*/) {
+  verifier_cb_ctx* ctx = static_cast<verifier_cb_ctx*>(user_data);
+  const grpc_http_response* response = &ctx->responses[HTTP_RESPONSE_OPENID];
+  Json json = json_from_http(response);
+  grpc_httpcli_request req;
+  const char* jwks_uri;
+  grpc_resource_quota* resource_quota = nullptr;
+  const Json* cur;
+
+  /* TODO(jboeuf): Cache the jwks_uri in order to avoid this hop next time. */
+  if (json.type() == Json::Type::JSON_NULL) goto error;
+  cur = find_property_by_name(json, "jwks_uri");
+  if (cur == nullptr) {
+    gpr_log(GPR_ERROR, "Could not find jwks_uri in openid config.");
+    goto error;
+  }
+  jwks_uri = validate_string_field(*cur, "jwks_uri");
+  if (jwks_uri == nullptr) goto error;
+  if (strstr(jwks_uri, "https://") != jwks_uri) {
+    gpr_log(GPR_ERROR, "Invalid non https jwks_uri: %s.", jwks_uri);
+    goto error;
+  }
+  jwks_uri += 8;
+  req.handshaker = &grpc_httpcli_ssl;
+  req.host = gpr_strdup(jwks_uri);
+  req.http.path = const_cast<char*>(strchr(jwks_uri, '/'));
+  if (req.http.path == nullptr) {
+    req.http.path = (char*)"";
+  } else {
+    *(req.host + (req.http.path - jwks_uri)) = '\0';
+  }
+
+  /* TODO(ctiller): Carry the resource_quota in ctx and share it with the host
+     channel. This would allow us to cancel an authentication query when under
+     extreme memory pressure. */
+  resource_quota = grpc_resource_quota_create("jwt_verifier");
+  grpc_httpcli_get(
+      &ctx->verifier->http_ctx, &ctx->pollent, resource_quota, &req,
+      grpc_core::ExecCtx::Get()->Now() + grpc_jwt_verifier_max_delay,
+      GRPC_CLOSURE_CREATE(on_keys_retrieved, ctx, grpc_schedule_on_exec_ctx),
+      &ctx->responses[HTTP_RESPONSE_KEYS]);
+  grpc_resource_quota_unref_internal(resource_quota);
+  gpr_free(req.host);
+  return;
+
+error:
+  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, nullptr);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+static email_key_mapping* verifier_get_mapping(grpc_jwt_verifier* v,
+                                               const char* email_domain) {
+  size_t i;
+  if (v->mappings == nullptr) return nullptr;
+  for (i = 0; i < v->num_mappings; i++) {
+    if (strcmp(email_domain, v->mappings[i].email_domain) == 0) {
+      return &v->mappings[i];
+    }
+  }
+  return nullptr;
+}
+
+static void verifier_put_mapping(grpc_jwt_verifier* v, const char* email_domain,
+                                 const char* key_url_prefix) {
+  email_key_mapping* mapping = verifier_get_mapping(v, email_domain);
+  GPR_ASSERT(v->num_mappings < v->allocated_mappings);
+  if (mapping != nullptr) {
+    gpr_free(mapping->key_url_prefix);
+    mapping->key_url_prefix = gpr_strdup(key_url_prefix);
+    return;
+  }
+  v->mappings[v->num_mappings].email_domain = gpr_strdup(email_domain);
+  v->mappings[v->num_mappings].key_url_prefix = gpr_strdup(key_url_prefix);
+  v->num_mappings++;
+  GPR_ASSERT(v->num_mappings <= v->allocated_mappings);
+}
+
+/* Very non-sophisticated way to detect an email address. Should be good
+   enough for now... */
+const char* grpc_jwt_issuer_email_domain(const char* issuer) {
+  const char* at_sign = strchr(issuer, '@');
+  if (at_sign == nullptr) return nullptr;
+  const char* email_domain = at_sign + 1;
+  if (*email_domain == '\0') return nullptr;
+  const char* dot = strrchr(email_domain, '.');
+  if (dot == nullptr || dot == email_domain) return email_domain;
+  GPR_ASSERT(dot > email_domain);
+  /* There may be a subdomain, we just want the domain. */
+  dot = static_cast<const char*>(gpr_memrchr(
+      (void*)email_domain, '.', static_cast<size_t>(dot - email_domain)));
+  if (dot == nullptr) return email_domain;
+  return dot + 1;
+}
+
+/* Takes ownership of ctx. */
+static void retrieve_key_and_verify(verifier_cb_ctx* ctx) {
+  const char* email_domain;
+  grpc_closure* http_cb;
+  char* path_prefix = nullptr;
+  const char* iss;
+  grpc_httpcli_request req;
+  grpc_resource_quota* resource_quota = nullptr;
+  memset(&req, 0, sizeof(grpc_httpcli_request));
+  req.handshaker = &grpc_httpcli_ssl;
+  http_response_index rsp_idx;
+
+  GPR_ASSERT(ctx != nullptr && ctx->header != nullptr &&
+             ctx->claims != nullptr);
+  iss = ctx->claims->iss;
+  if (ctx->header->kid == nullptr) {
+    gpr_log(GPR_ERROR, "Missing kid in jose header.");
+    goto error;
+  }
+  if (iss == nullptr) {
+    gpr_log(GPR_ERROR, "Missing iss in claims.");
+    goto error;
+  }
+
+  /* This code relies on:
+     https://openid.net/specs/openid-connect-discovery-1_0.html
+     Nobody seems to implement the account/email/webfinger part 2. of the spec
+     so we will rely instead on email/url mappings if we detect such an issuer.
+     Part 4, on the other hand is implemented by both google and salesforce. */
+  email_domain = grpc_jwt_issuer_email_domain(iss);
+  if (email_domain != nullptr) {
+    email_key_mapping* mapping;
+    GPR_ASSERT(ctx->verifier != nullptr);
+    mapping = verifier_get_mapping(ctx->verifier, email_domain);
+    if (mapping == nullptr) {
+      gpr_log(GPR_ERROR, "Missing mapping for issuer email.");
+      goto error;
+    }
+    req.host = gpr_strdup(mapping->key_url_prefix);
+    path_prefix = strchr(req.host, '/');
+    if (path_prefix == nullptr) {
+      gpr_asprintf(&req.http.path, "/%s", iss);
+    } else {
+      *(path_prefix++) = '\0';
+      gpr_asprintf(&req.http.path, "/%s/%s", path_prefix, iss);
+    }
+    http_cb =
+        GRPC_CLOSURE_CREATE(on_keys_retrieved, ctx, grpc_schedule_on_exec_ctx);
+    rsp_idx = HTTP_RESPONSE_KEYS;
+  } else {
+    req.host = gpr_strdup(strstr(iss, "https://") == iss ? iss + 8 : iss);
+    path_prefix = strchr(req.host, '/');
+    if (path_prefix == nullptr) {
+      req.http.path = gpr_strdup(GRPC_OPENID_CONFIG_URL_SUFFIX);
+    } else {
+      *(path_prefix++) = 0;
+      gpr_asprintf(&req.http.path, "/%s%s", path_prefix,
+                   GRPC_OPENID_CONFIG_URL_SUFFIX);
+    }
+    http_cb = GRPC_CLOSURE_CREATE(on_openid_config_retrieved, ctx,
+                                  grpc_schedule_on_exec_ctx);
+    rsp_idx = HTTP_RESPONSE_OPENID;
+  }
+
+  /* TODO(ctiller): Carry the resource_quota in ctx and share it with the host
+     channel. This would allow us to cancel an authentication query when under
+     extreme memory pressure. */
+  resource_quota = grpc_resource_quota_create("jwt_verifier");
+  grpc_httpcli_get(
+      &ctx->verifier->http_ctx, &ctx->pollent, resource_quota, &req,
+      grpc_core::ExecCtx::Get()->Now() + grpc_jwt_verifier_max_delay, http_cb,
+      &ctx->responses[rsp_idx]);
+  grpc_resource_quota_unref_internal(resource_quota);
+  gpr_free(req.host);
+  gpr_free(req.http.path);
+  return;
+
+error:
+  ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, nullptr);
+  verifier_cb_ctx_destroy(ctx);
+}
+
+void grpc_jwt_verifier_verify(grpc_jwt_verifier* verifier,
+                              grpc_pollset* pollset, const char* jwt,
+                              const char* audience,
+                              grpc_jwt_verification_done_cb cb,
+                              void* user_data) {
+  const char* dot = nullptr;
+  jose_header* header = nullptr;
+  grpc_jwt_claims* claims = nullptr;
+  grpc_slice signature;
+  size_t signed_jwt_len;
+  const char* cur = jwt;
+  Json json;
+
+  GPR_ASSERT(verifier != nullptr && jwt != nullptr && audience != nullptr &&
+             cb != nullptr);
+  dot = strchr(cur, '.');
+  if (dot == nullptr) goto error;
+  json = parse_json_part_from_jwt(cur, static_cast<size_t>(dot - cur));
+  if (json.type() == Json::Type::JSON_NULL) goto error;
+  header = jose_header_from_json(std::move(json));
+  if (header == nullptr) goto error;
+
+  cur = dot + 1;
+  dot = strchr(cur, '.');
+  if (dot == nullptr) goto error;
+  json = parse_json_part_from_jwt(cur, static_cast<size_t>(dot - cur));
+  if (json.type() == Json::Type::JSON_NULL) goto error;
+  claims = grpc_jwt_claims_from_json(std::move(json));
+  if (claims == nullptr) goto error;
+
+  signed_jwt_len = static_cast<size_t>(dot - jwt);
+  cur = dot + 1;
+  signature = grpc_base64_decode(cur, 1);
+  if (GRPC_SLICE_IS_EMPTY(signature)) goto error;
+  retrieve_key_and_verify(
+      verifier_cb_ctx_create(verifier, pollset, header, claims, audience,
+                             signature, jwt, signed_jwt_len, user_data, cb));
+  return;
+
+error:
+  if (header != nullptr) jose_header_destroy(header);
+  if (claims != nullptr) grpc_jwt_claims_destroy(claims);
+  cb(user_data, GRPC_JWT_VERIFIER_BAD_FORMAT, nullptr);
+}
+
+grpc_jwt_verifier* grpc_jwt_verifier_create(
+    const grpc_jwt_verifier_email_domain_key_url_mapping* mappings,
+    size_t num_mappings) {
+  grpc_jwt_verifier* v =
+      static_cast<grpc_jwt_verifier*>(gpr_zalloc(sizeof(grpc_jwt_verifier)));
+  grpc_httpcli_context_init(&v->http_ctx);
+
+  /* We know at least of one mapping. */
+  v->allocated_mappings = 1 + num_mappings;
+  v->mappings = static_cast<email_key_mapping*>(
+      gpr_malloc(v->allocated_mappings * sizeof(email_key_mapping)));
+  verifier_put_mapping(v, GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN,
+                       GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX);
+  /* User-Provided mappings. */
+  if (mappings != nullptr) {
+    size_t i;
+    for (i = 0; i < num_mappings; i++) {
+      verifier_put_mapping(v, mappings[i].email_domain,
+                           mappings[i].key_url_prefix);
+    }
+  }
+  return v;
+}
+
+void grpc_jwt_verifier_destroy(grpc_jwt_verifier* v) {
+  size_t i;
+  if (v == nullptr) return;
+  grpc_httpcli_context_destroy(&v->http_ctx);
+  if (v->mappings != nullptr) {
+    for (i = 0; i < v->num_mappings; i++) {
+      gpr_free(v->mappings[i].email_domain);
+      gpr_free(v->mappings[i].key_url_prefix);
+    }
+    gpr_free(v->mappings);
+  }
+  gpr_free(v);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.h
new file mode 100644
index 0000000..d448386
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/jwt/jwt_verifier.h	
@@ -0,0 +1,123 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/json/json.h"
+
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+
+/* --- Constants. --- */
+
+#define GRPC_OPENID_CONFIG_URL_SUFFIX "/.well-known/openid-configuration"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN "gserviceaccount.com"
+#define GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX \
+  "www.googleapis.com/robot/v1/metadata/x509"
+
+/* --- grpc_jwt_verifier_status. --- */
+
+typedef enum {
+  GRPC_JWT_VERIFIER_OK = 0,
+  GRPC_JWT_VERIFIER_BAD_SIGNATURE,
+  GRPC_JWT_VERIFIER_BAD_FORMAT,
+  GRPC_JWT_VERIFIER_BAD_AUDIENCE,
+  GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR,
+  GRPC_JWT_VERIFIER_TIME_CONSTRAINT_FAILURE,
+  GRPC_JWT_VERIFIER_BAD_SUBJECT,
+  GRPC_JWT_VERIFIER_GENERIC_ERROR
+} grpc_jwt_verifier_status;
+
+const char* grpc_jwt_verifier_status_to_string(grpc_jwt_verifier_status status);
+
+/* --- grpc_jwt_claims. --- */
+
+typedef struct grpc_jwt_claims grpc_jwt_claims;
+
+void grpc_jwt_claims_destroy(grpc_jwt_claims* claims);
+
+/* Returns the whole JSON tree of the claims. */
+const grpc_core::Json* grpc_jwt_claims_json(const grpc_jwt_claims* claims);
+
+/* Access to registered claims in https://tools.ietf.org/html/rfc7519#page-9 */
+const char* grpc_jwt_claims_subject(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_issuer(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_id(const grpc_jwt_claims* claims);
+const char* grpc_jwt_claims_audience(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_issued_at(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_expires_at(const grpc_jwt_claims* claims);
+gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims* claims);
+
+/* --- grpc_jwt_verifier. --- */
+
+typedef struct grpc_jwt_verifier grpc_jwt_verifier;
+
+typedef struct {
+  /* The email domain is the part after the @ sign. */
+  const char* email_domain;
+
+  /* The key url prefix will be used to get the public key from the issuer:
+     https://<key_url_prefix>/<issuer_email>
+     Therefore the key_url_prefix must NOT contain https://. */
+  const char* key_url_prefix;
+} grpc_jwt_verifier_email_domain_key_url_mapping;
+
+/* Globals to control the verifier. Not thread-safe. */
+extern gpr_timespec grpc_jwt_verifier_clock_skew;
+extern grpc_millis grpc_jwt_verifier_max_delay;
+
+/* The verifier can be created with some custom mappings to help with key
+   discovery in the case where the issuer is an email address.
+   mappings can be NULL in which case num_mappings MUST be 0.
+   A verifier object has one built-in mapping (unless overridden):
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_EMAIL_DOMAIN ->
+   GRPC_GOOGLE_SERVICE_ACCOUNTS_KEY_URL_PREFIX.*/
+grpc_jwt_verifier* grpc_jwt_verifier_create(
+    const grpc_jwt_verifier_email_domain_key_url_mapping* mappings,
+    size_t num_mappings);
+
+/*The verifier must not be destroyed if there are still outstanding callbacks.*/
+void grpc_jwt_verifier_destroy(grpc_jwt_verifier* verifier);
+
+/* User provided callback that will be called when the verification of the JWT
+   is done (maybe in another thread).
+   It is the responsibility of the callee to call grpc_jwt_claims_destroy on
+   the claims. */
+typedef void (*grpc_jwt_verification_done_cb)(void* user_data,
+                                              grpc_jwt_verifier_status status,
+                                              grpc_jwt_claims* claims);
+
+/* Verifies for the JWT for the given expected audience. */
+void grpc_jwt_verifier_verify(grpc_jwt_verifier* verifier,
+                              grpc_pollset* pollset, const char* jwt,
+                              const char* audience,
+                              grpc_jwt_verification_done_cb cb,
+                              void* user_data);
+
+/* --- TESTING ONLY exposed functions. --- */
+
+grpc_jwt_claims* grpc_jwt_claims_from_json(grpc_core::Json json);
+grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims* claims,
+                                               const char* audience);
+const char* grpc_jwt_issuer_email_domain(const char* issuer);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_JWT_JWT_VERIFIER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.cc
new file mode 100644
index 0000000..966a887
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.cc	
@@ -0,0 +1,64 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/local/local_credentials.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/security/security_connector/local/local_security_connector.h"
+
+#define GRPC_CREDENTIALS_TYPE_LOCAL "Local"
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_local_credentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name, const grpc_channel_args* args,
+    grpc_channel_args** /*new_args*/) {
+  return grpc_local_channel_security_connector_create(
+      this->Ref(), std::move(request_metadata_creds), args, target_name);
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_local_server_credentials::create_security_connector() {
+  return grpc_local_server_security_connector_create(this->Ref());
+}
+
+grpc_local_credentials::grpc_local_credentials(
+    grpc_local_connect_type connect_type)
+    : grpc_channel_credentials(GRPC_CREDENTIALS_TYPE_LOCAL),
+      connect_type_(connect_type) {}
+
+grpc_channel_credentials* grpc_local_credentials_create(
+    grpc_local_connect_type connect_type) {
+  return new grpc_local_credentials(connect_type);
+}
+
+grpc_local_server_credentials::grpc_local_server_credentials(
+    grpc_local_connect_type connect_type)
+    : grpc_server_credentials(GRPC_CREDENTIALS_TYPE_LOCAL),
+      connect_type_(connect_type) {}
+
+grpc_server_credentials* grpc_local_server_credentials_create(
+    grpc_local_connect_type connect_type) {
+  return new grpc_local_server_credentials(connect_type);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.h
new file mode 100644
index 0000000..60a8a4f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/local/local_credentials.h	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+/* Main class for grpc local channel credential. */
+class grpc_local_credentials final : public grpc_channel_credentials {
+ public:
+  explicit grpc_local_credentials(grpc_local_connect_type connect_type);
+  ~grpc_local_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  grpc_local_connect_type connect_type() const { return connect_type_; }
+
+ private:
+  grpc_local_connect_type connect_type_;
+};
+
+/* Main class for grpc local server credential. */
+class grpc_local_server_credentials final : public grpc_server_credentials {
+ public:
+  explicit grpc_local_server_credentials(grpc_local_connect_type connect_type);
+  ~grpc_local_server_credentials() override = default;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  grpc_local_connect_type connect_type() const { return connect_type_; }
+
+ private:
+  grpc_local_connect_type connect_type_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_LOCAL_LOCAL_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.cc
new file mode 100644
index 0000000..3a6d19c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.cc	
@@ -0,0 +1,743 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
+
+#include <string.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/impl/codegen/slice.h>
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/security/util/json_util.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+using grpc_core::Json;
+
+//
+// Auth Refresh Token.
+//
+
+int grpc_auth_refresh_token_is_valid(
+    const grpc_auth_refresh_token* refresh_token) {
+  return (refresh_token != nullptr) &&
+         strcmp(refresh_token->type, GRPC_AUTH_JSON_TYPE_INVALID);
+}
+
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_json(
+    const Json& json) {
+  grpc_auth_refresh_token result;
+  const char* prop_value;
+  int success = 0;
+  grpc_error* error = GRPC_ERROR_NONE;
+
+  memset(&result, 0, sizeof(grpc_auth_refresh_token));
+  result.type = GRPC_AUTH_JSON_TYPE_INVALID;
+  if (json.type() != Json::Type::OBJECT) {
+    gpr_log(GPR_ERROR, "Invalid json.");
+    goto end;
+  }
+
+  prop_value = grpc_json_get_string_property(json, "type", &error);
+  GRPC_LOG_IF_ERROR("Parsing refresh token", error);
+  if (prop_value == nullptr ||
+      strcmp(prop_value, GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER)) {
+    goto end;
+  }
+  result.type = GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER;
+
+  if (!grpc_copy_json_string_property(json, "client_secret",
+                                      &result.client_secret) ||
+      !grpc_copy_json_string_property(json, "client_id", &result.client_id) ||
+      !grpc_copy_json_string_property(json, "refresh_token",
+                                      &result.refresh_token)) {
+    goto end;
+  }
+  success = 1;
+
+end:
+  if (!success) grpc_auth_refresh_token_destruct(&result);
+  return result;
+}
+
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_string(
+    const char* json_string) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  Json json = Json::Parse(json_string, &error);
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "JSON parsing failed: %s", grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+  }
+  return grpc_auth_refresh_token_create_from_json(std::move(json));
+}
+
+void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token* refresh_token) {
+  if (refresh_token == nullptr) return;
+  refresh_token->type = GRPC_AUTH_JSON_TYPE_INVALID;
+  if (refresh_token->client_id != nullptr) {
+    gpr_free(refresh_token->client_id);
+    refresh_token->client_id = nullptr;
+  }
+  if (refresh_token->client_secret != nullptr) {
+    gpr_free(refresh_token->client_secret);
+    refresh_token->client_secret = nullptr;
+  }
+  if (refresh_token->refresh_token != nullptr) {
+    gpr_free(refresh_token->refresh_token);
+    refresh_token->refresh_token = nullptr;
+  }
+}
+
+//
+// Oauth2 Token Fetcher credentials.
+//
+
+grpc_oauth2_token_fetcher_credentials::
+    ~grpc_oauth2_token_fetcher_credentials() {
+  GRPC_MDELEM_UNREF(access_token_md_);
+  gpr_mu_destroy(&mu_);
+  grpc_pollset_set_destroy(grpc_polling_entity_pollset_set(&pollent_));
+  grpc_httpcli_context_destroy(&httpcli_context_);
+}
+
+grpc_credentials_status
+grpc_oauth2_token_fetcher_credentials_parse_server_response(
+    const grpc_http_response* response, grpc_mdelem* token_md,
+    grpc_millis* token_lifetime) {
+  char* null_terminated_body = nullptr;
+  char* new_access_token = nullptr;
+  grpc_credentials_status status = GRPC_CREDENTIALS_OK;
+  Json json;
+
+  if (response == nullptr) {
+    gpr_log(GPR_ERROR, "Received NULL response.");
+    status = GRPC_CREDENTIALS_ERROR;
+    goto end;
+  }
+
+  if (response->body_length > 0) {
+    null_terminated_body =
+        static_cast<char*>(gpr_malloc(response->body_length + 1));
+    null_terminated_body[response->body_length] = '\0';
+    memcpy(null_terminated_body, response->body, response->body_length);
+  }
+
+  if (response->status != 200) {
+    gpr_log(GPR_ERROR, "Call to http server ended with error %d [%s].",
+            response->status,
+            null_terminated_body != nullptr ? null_terminated_body : "");
+    status = GRPC_CREDENTIALS_ERROR;
+    goto end;
+  } else {
+    const char* access_token = nullptr;
+    const char* token_type = nullptr;
+    const char* expires_in = nullptr;
+    Json::Object::const_iterator it;
+    grpc_error* error = GRPC_ERROR_NONE;
+    json = Json::Parse(null_terminated_body, &error);
+    if (error != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "Could not parse JSON from %s: %s",
+              null_terminated_body, grpc_error_string(error));
+      GRPC_ERROR_UNREF(error);
+      status = GRPC_CREDENTIALS_ERROR;
+      goto end;
+    }
+    if (json.type() != Json::Type::OBJECT) {
+      gpr_log(GPR_ERROR, "Response should be a JSON object");
+      status = GRPC_CREDENTIALS_ERROR;
+      goto end;
+    }
+    it = json.object_value().find("access_token");
+    if (it == json.object_value().end() ||
+        it->second.type() != Json::Type::STRING) {
+      gpr_log(GPR_ERROR, "Missing or invalid access_token in JSON.");
+      status = GRPC_CREDENTIALS_ERROR;
+      goto end;
+    }
+    access_token = it->second.string_value().c_str();
+    it = json.object_value().find("token_type");
+    if (it == json.object_value().end() ||
+        it->second.type() != Json::Type::STRING) {
+      gpr_log(GPR_ERROR, "Missing or invalid token_type in JSON.");
+      status = GRPC_CREDENTIALS_ERROR;
+      goto end;
+    }
+    token_type = it->second.string_value().c_str();
+    it = json.object_value().find("expires_in");
+    if (it == json.object_value().end() ||
+        it->second.type() != Json::Type::NUMBER) {
+      gpr_log(GPR_ERROR, "Missing or invalid expires_in in JSON.");
+      status = GRPC_CREDENTIALS_ERROR;
+      goto end;
+    }
+    expires_in = it->second.string_value().c_str();
+    gpr_asprintf(&new_access_token, "%s %s", token_type, access_token);
+    *token_lifetime = strtol(expires_in, nullptr, 10) * GPR_MS_PER_SEC;
+    if (!GRPC_MDISNULL(*token_md)) GRPC_MDELEM_UNREF(*token_md);
+    *token_md = grpc_mdelem_from_slices(
+        grpc_core::ExternallyManagedSlice(GRPC_AUTHORIZATION_METADATA_KEY),
+        grpc_core::UnmanagedMemorySlice(new_access_token));
+    status = GRPC_CREDENTIALS_OK;
+  }
+
+end:
+  if (status != GRPC_CREDENTIALS_OK && !GRPC_MDISNULL(*token_md)) {
+    GRPC_MDELEM_UNREF(*token_md);
+    *token_md = GRPC_MDNULL;
+  }
+  if (null_terminated_body != nullptr) gpr_free(null_terminated_body);
+  if (new_access_token != nullptr) gpr_free(new_access_token);
+  return status;
+}
+
+static void on_oauth2_token_fetcher_http_response(void* user_data,
+                                                  grpc_error* error) {
+  GRPC_LOG_IF_ERROR("oauth_fetch", GRPC_ERROR_REF(error));
+  grpc_credentials_metadata_request* r =
+      static_cast<grpc_credentials_metadata_request*>(user_data);
+  grpc_oauth2_token_fetcher_credentials* c =
+      reinterpret_cast<grpc_oauth2_token_fetcher_credentials*>(r->creds.get());
+  c->on_http_response(r, error);
+}
+
+void grpc_oauth2_token_fetcher_credentials::on_http_response(
+    grpc_credentials_metadata_request* r, grpc_error* error) {
+  grpc_mdelem access_token_md = GRPC_MDNULL;
+  grpc_millis token_lifetime = 0;
+  grpc_credentials_status status =
+      error == GRPC_ERROR_NONE
+          ? grpc_oauth2_token_fetcher_credentials_parse_server_response(
+                &r->response, &access_token_md, &token_lifetime)
+          : GRPC_CREDENTIALS_ERROR;
+  // Update cache and grab list of pending requests.
+  gpr_mu_lock(&mu_);
+  token_fetch_pending_ = false;
+  access_token_md_ = GRPC_MDELEM_REF(access_token_md);
+  token_expiration_ =
+      status == GRPC_CREDENTIALS_OK
+          ? gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                         gpr_time_from_millis(token_lifetime, GPR_TIMESPAN))
+          : gpr_inf_past(GPR_CLOCK_MONOTONIC);
+  grpc_oauth2_pending_get_request_metadata* pending_request = pending_requests_;
+  pending_requests_ = nullptr;
+  gpr_mu_unlock(&mu_);
+  // Invoke callbacks for all pending requests.
+  while (pending_request != nullptr) {
+    grpc_error* new_error = GRPC_ERROR_NONE;
+    if (status == GRPC_CREDENTIALS_OK) {
+      grpc_credentials_mdelem_array_add(pending_request->md_array,
+                                        access_token_md);
+    } else {
+      new_error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+          "Error occurred when fetching oauth2 token.", &error, 1);
+    }
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                            pending_request->on_request_metadata, new_error);
+    grpc_polling_entity_del_from_pollset_set(
+        pending_request->pollent, grpc_polling_entity_pollset_set(&pollent_));
+    grpc_oauth2_pending_get_request_metadata* prev = pending_request;
+    pending_request = pending_request->next;
+    gpr_free(prev);
+  }
+  GRPC_MDELEM_UNREF(access_token_md);
+  Unref();
+  grpc_credentials_metadata_request_destroy(r);
+}
+
+bool grpc_oauth2_token_fetcher_credentials::get_request_metadata(
+    grpc_polling_entity* pollent, grpc_auth_metadata_context /*context*/,
+    grpc_credentials_mdelem_array* md_array, grpc_closure* on_request_metadata,
+    grpc_error** /*error*/) {
+  // Check if we can use the cached token.
+  grpc_millis refresh_threshold =
+      GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS * GPR_MS_PER_SEC;
+  grpc_mdelem cached_access_token_md = GRPC_MDNULL;
+  gpr_mu_lock(&mu_);
+  if (!GRPC_MDISNULL(access_token_md_) &&
+      gpr_time_cmp(
+          gpr_time_sub(token_expiration_, gpr_now(GPR_CLOCK_MONOTONIC)),
+          gpr_time_from_seconds(GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS,
+                                GPR_TIMESPAN)) > 0) {
+    cached_access_token_md = GRPC_MDELEM_REF(access_token_md_);
+  }
+  if (!GRPC_MDISNULL(cached_access_token_md)) {
+    gpr_mu_unlock(&mu_);
+    grpc_credentials_mdelem_array_add(md_array, cached_access_token_md);
+    GRPC_MDELEM_UNREF(cached_access_token_md);
+    return true;
+  }
+  // Couldn't get the token from the cache.
+  // Add request to pending_requests_ and start a new fetch if needed.
+  grpc_oauth2_pending_get_request_metadata* pending_request =
+      static_cast<grpc_oauth2_pending_get_request_metadata*>(
+          gpr_malloc(sizeof(*pending_request)));
+  pending_request->md_array = md_array;
+  pending_request->on_request_metadata = on_request_metadata;
+  pending_request->pollent = pollent;
+  grpc_polling_entity_add_to_pollset_set(
+      pollent, grpc_polling_entity_pollset_set(&pollent_));
+  pending_request->next = pending_requests_;
+  pending_requests_ = pending_request;
+  bool start_fetch = false;
+  if (!token_fetch_pending_) {
+    token_fetch_pending_ = true;
+    start_fetch = true;
+  }
+  gpr_mu_unlock(&mu_);
+  if (start_fetch) {
+    Ref().release();
+    fetch_oauth2(grpc_credentials_metadata_request_create(this->Ref()),
+                 &httpcli_context_, &pollent_,
+                 on_oauth2_token_fetcher_http_response,
+                 grpc_core::ExecCtx::Get()->Now() + refresh_threshold);
+  }
+  return false;
+}
+
+void grpc_oauth2_token_fetcher_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* md_array, grpc_error* error) {
+  gpr_mu_lock(&mu_);
+  grpc_oauth2_pending_get_request_metadata* prev = nullptr;
+  grpc_oauth2_pending_get_request_metadata* pending_request = pending_requests_;
+  while (pending_request != nullptr) {
+    if (pending_request->md_array == md_array) {
+      // Remove matching pending request from the list.
+      if (prev != nullptr) {
+        prev->next = pending_request->next;
+      } else {
+        pending_requests_ = pending_request->next;
+      }
+      // Invoke the callback immediately with an error.
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                              pending_request->on_request_metadata,
+                              GRPC_ERROR_REF(error));
+      gpr_free(pending_request);
+      break;
+    }
+    prev = pending_request;
+    pending_request = pending_request->next;
+  }
+  gpr_mu_unlock(&mu_);
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_oauth2_token_fetcher_credentials::grpc_oauth2_token_fetcher_credentials()
+    : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_OAUTH2),
+      token_expiration_(gpr_inf_past(GPR_CLOCK_MONOTONIC)),
+      pollent_(grpc_polling_entity_create_from_pollset_set(
+          grpc_pollset_set_create())) {
+  gpr_mu_init(&mu_);
+  grpc_httpcli_context_init(&httpcli_context_);
+}
+
+//
+//  Google Compute Engine credentials.
+//
+
+namespace {
+
+class grpc_compute_engine_token_fetcher_credentials
+    : public grpc_oauth2_token_fetcher_credentials {
+ public:
+  grpc_compute_engine_token_fetcher_credentials() = default;
+  ~grpc_compute_engine_token_fetcher_credentials() override = default;
+
+ protected:
+  void fetch_oauth2(grpc_credentials_metadata_request* metadata_req,
+                    grpc_httpcli_context* http_context,
+                    grpc_polling_entity* pollent,
+                    grpc_iomgr_cb_func response_cb,
+                    grpc_millis deadline) override {
+    grpc_http_header header = {const_cast<char*>("Metadata-Flavor"),
+                               const_cast<char*>("Google")};
+    grpc_httpcli_request request;
+    memset(&request, 0, sizeof(grpc_httpcli_request));
+    request.host = (char*)GRPC_COMPUTE_ENGINE_METADATA_HOST;
+    request.http.path = (char*)GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH;
+    request.http.hdr_count = 1;
+    request.http.hdrs = &header;
+    /* TODO(ctiller): Carry the resource_quota in ctx and share it with the host
+       channel. This would allow us to cancel an authentication query when under
+       extreme memory pressure. */
+    grpc_resource_quota* resource_quota =
+        grpc_resource_quota_create("oauth2_credentials");
+    grpc_httpcli_get(http_context, pollent, resource_quota, &request, deadline,
+                     GRPC_CLOSURE_INIT(&http_get_cb_closure_, response_cb,
+                                       metadata_req, grpc_schedule_on_exec_ctx),
+                     &metadata_req->response);
+    grpc_resource_quota_unref_internal(resource_quota);
+  }
+
+ private:
+  grpc_closure http_get_cb_closure_;
+};
+
+}  // namespace
+
+grpc_call_credentials* grpc_google_compute_engine_credentials_create(
+    void* reserved) {
+  GRPC_API_TRACE("grpc_compute_engine_credentials_create(reserved=%p)", 1,
+                 (reserved));
+  GPR_ASSERT(reserved == nullptr);
+  return grpc_core::MakeRefCounted<
+             grpc_compute_engine_token_fetcher_credentials>()
+      .release();
+}
+
+//
+// Google Refresh Token credentials.
+//
+
+grpc_google_refresh_token_credentials::
+    ~grpc_google_refresh_token_credentials() {
+  grpc_auth_refresh_token_destruct(&refresh_token_);
+}
+
+void grpc_google_refresh_token_credentials::fetch_oauth2(
+    grpc_credentials_metadata_request* metadata_req,
+    grpc_httpcli_context* httpcli_context, grpc_polling_entity* pollent,
+    grpc_iomgr_cb_func response_cb, grpc_millis deadline) {
+  grpc_http_header header = {
+      const_cast<char*>("Content-Type"),
+      const_cast<char*>("application/x-www-form-urlencoded")};
+  grpc_httpcli_request request;
+  char* body = nullptr;
+  gpr_asprintf(&body, GRPC_REFRESH_TOKEN_POST_BODY_FORMAT_STRING,
+               refresh_token_.client_id, refresh_token_.client_secret,
+               refresh_token_.refresh_token);
+  memset(&request, 0, sizeof(grpc_httpcli_request));
+  request.host = (char*)GRPC_GOOGLE_OAUTH2_SERVICE_HOST;
+  request.http.path = (char*)GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH;
+  request.http.hdr_count = 1;
+  request.http.hdrs = &header;
+  request.handshaker = &grpc_httpcli_ssl;
+  /* TODO(ctiller): Carry the resource_quota in ctx and share it with the host
+     channel. This would allow us to cancel an authentication query when under
+     extreme memory pressure. */
+  grpc_resource_quota* resource_quota =
+      grpc_resource_quota_create("oauth2_credentials_refresh");
+  grpc_httpcli_post(httpcli_context, pollent, resource_quota, &request, body,
+                    strlen(body), deadline,
+                    GRPC_CLOSURE_INIT(&http_post_cb_closure_, response_cb,
+                                      metadata_req, grpc_schedule_on_exec_ctx),
+                    &metadata_req->response);
+  grpc_resource_quota_unref_internal(resource_quota);
+  gpr_free(body);
+}
+
+grpc_google_refresh_token_credentials::grpc_google_refresh_token_credentials(
+    grpc_auth_refresh_token refresh_token)
+    : refresh_token_(refresh_token) {}
+
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_refresh_token_credentials_create_from_auth_refresh_token(
+    grpc_auth_refresh_token refresh_token) {
+  if (!grpc_auth_refresh_token_is_valid(&refresh_token)) {
+    gpr_log(GPR_ERROR, "Invalid input for refresh token credentials creation");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_google_refresh_token_credentials>(
+      refresh_token);
+}
+
+static char* create_loggable_refresh_token(grpc_auth_refresh_token* token) {
+  if (strcmp(token->type, GRPC_AUTH_JSON_TYPE_INVALID) == 0) {
+    return gpr_strdup("<Invalid json token>");
+  }
+  char* loggable_token = nullptr;
+  gpr_asprintf(&loggable_token,
+               "{\n type: %s\n client_id: %s\n client_secret: "
+               "<redacted>\n refresh_token: <redacted>\n}",
+               token->type, token->client_id);
+  return loggable_token;
+}
+
+grpc_call_credentials* grpc_google_refresh_token_credentials_create(
+    const char* json_refresh_token, void* reserved) {
+  grpc_auth_refresh_token token =
+      grpc_auth_refresh_token_create_from_string(json_refresh_token);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) {
+    char* loggable_token = create_loggable_refresh_token(&token);
+    gpr_log(GPR_INFO,
+            "grpc_refresh_token_credentials_create(json_refresh_token=%s, "
+            "reserved=%p)",
+            loggable_token, reserved);
+    gpr_free(loggable_token);
+  }
+  GPR_ASSERT(reserved == nullptr);
+  return grpc_refresh_token_credentials_create_from_auth_refresh_token(token)
+      .release();
+}
+
+//
+// STS credentials.
+//
+
+namespace grpc_core {
+
+namespace {
+
+void MaybeAddToBody(gpr_strvec* body_strvec, const char* field_name,
+                    const char* field) {
+  if (field == nullptr || strlen(field) == 0) return;
+  char* new_query;
+  gpr_asprintf(&new_query, "&%s=%s", field_name, field);
+  gpr_strvec_add(body_strvec, new_query);
+}
+
+grpc_error* LoadTokenFile(const char* path, gpr_slice* token) {
+  grpc_error* err = grpc_load_file(path, 1, token);
+  if (err != GRPC_ERROR_NONE) return err;
+  if (GRPC_SLICE_LENGTH(*token) == 0) {
+    gpr_log(GPR_ERROR, "Token file %s is empty", path);
+    err = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Token file is empty.");
+  }
+  return err;
+}
+
+class StsTokenFetcherCredentials
+    : public grpc_oauth2_token_fetcher_credentials {
+ public:
+  StsTokenFetcherCredentials(grpc_uri* sts_url,  // Ownership transferred.
+                             const grpc_sts_credentials_options* options)
+      : sts_url_(sts_url),
+        resource_(gpr_strdup(options->resource)),
+        audience_(gpr_strdup(options->audience)),
+        scope_(gpr_strdup(options->scope)),
+        requested_token_type_(gpr_strdup(options->requested_token_type)),
+        subject_token_path_(gpr_strdup(options->subject_token_path)),
+        subject_token_type_(gpr_strdup(options->subject_token_type)),
+        actor_token_path_(gpr_strdup(options->actor_token_path)),
+        actor_token_type_(gpr_strdup(options->actor_token_type)) {}
+
+  ~StsTokenFetcherCredentials() override { grpc_uri_destroy(sts_url_); }
+
+ private:
+  void fetch_oauth2(grpc_credentials_metadata_request* metadata_req,
+                    grpc_httpcli_context* http_context,
+                    grpc_polling_entity* pollent,
+                    grpc_iomgr_cb_func response_cb,
+                    grpc_millis deadline) override {
+    char* body = nullptr;
+    size_t body_length = 0;
+    grpc_error* err = FillBody(&body, &body_length);
+    if (err != GRPC_ERROR_NONE) {
+      response_cb(metadata_req, err);
+      GRPC_ERROR_UNREF(err);
+      return;
+    }
+    grpc_http_header header = {
+        const_cast<char*>("Content-Type"),
+        const_cast<char*>("application/x-www-form-urlencoded")};
+    grpc_httpcli_request request;
+    memset(&request, 0, sizeof(grpc_httpcli_request));
+    request.host = (char*)sts_url_->authority;
+    request.http.path = (char*)sts_url_->path;
+    request.http.hdr_count = 1;
+    request.http.hdrs = &header;
+    request.handshaker = (strcmp(sts_url_->scheme, "https") == 0)
+                             ? &grpc_httpcli_ssl
+                             : &grpc_httpcli_plaintext;
+    /* TODO(ctiller): Carry the resource_quota in ctx and share it with the host
+       channel. This would allow us to cancel an authentication query when under
+       extreme memory pressure. */
+    grpc_resource_quota* resource_quota =
+        grpc_resource_quota_create("oauth2_credentials_refresh");
+    grpc_httpcli_post(
+        http_context, pollent, resource_quota, &request, body, body_length,
+        deadline,
+        GRPC_CLOSURE_INIT(&http_post_cb_closure_, response_cb, metadata_req,
+                          grpc_schedule_on_exec_ctx),
+        &metadata_req->response);
+    grpc_resource_quota_unref_internal(resource_quota);
+    gpr_free(body);
+  }
+
+  grpc_error* FillBody(char** body, size_t* body_length) {
+    *body = nullptr;
+    gpr_strvec body_strvec;
+    gpr_strvec_init(&body_strvec);
+    grpc_slice subject_token = grpc_empty_slice();
+    grpc_slice actor_token = grpc_empty_slice();
+    grpc_error* err = GRPC_ERROR_NONE;
+
+    auto cleanup = [&body, &body_length, &body_strvec, &subject_token,
+                    &actor_token, &err]() {
+      if (err == GRPC_ERROR_NONE) {
+        *body = gpr_strvec_flatten(&body_strvec, body_length);
+      } else {
+        gpr_free(*body);
+      }
+      gpr_strvec_destroy(&body_strvec);
+      grpc_slice_unref_internal(subject_token);
+      grpc_slice_unref_internal(actor_token);
+      return err;
+    };
+
+    err = LoadTokenFile(subject_token_path_.get(), &subject_token);
+    if (err != GRPC_ERROR_NONE) return cleanup();
+    gpr_asprintf(
+        body, GRPC_STS_POST_MINIMAL_BODY_FORMAT_STRING,
+        reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(subject_token)),
+        subject_token_type_.get());
+    gpr_strvec_add(&body_strvec, *body);
+    MaybeAddToBody(&body_strvec, "resource", resource_.get());
+    MaybeAddToBody(&body_strvec, "audience", audience_.get());
+    MaybeAddToBody(&body_strvec, "scope", scope_.get());
+    MaybeAddToBody(&body_strvec, "requested_token_type",
+                   requested_token_type_.get());
+    if ((actor_token_path_ != nullptr) && *actor_token_path_ != '\0') {
+      err = LoadTokenFile(actor_token_path_.get(), &actor_token);
+      if (err != GRPC_ERROR_NONE) return cleanup();
+      MaybeAddToBody(
+          &body_strvec, "actor_token",
+          reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(actor_token)));
+      MaybeAddToBody(&body_strvec, "actor_token_type", actor_token_type_.get());
+    }
+    return cleanup();
+  }
+
+  grpc_uri* sts_url_;
+  grpc_closure http_post_cb_closure_;
+  grpc_core::UniquePtr<char> resource_;
+  grpc_core::UniquePtr<char> audience_;
+  grpc_core::UniquePtr<char> scope_;
+  grpc_core::UniquePtr<char> requested_token_type_;
+  grpc_core::UniquePtr<char> subject_token_path_;
+  grpc_core::UniquePtr<char> subject_token_type_;
+  grpc_core::UniquePtr<char> actor_token_path_;
+  grpc_core::UniquePtr<char> actor_token_type_;
+};
+
+}  // namespace
+
+grpc_error* ValidateStsCredentialsOptions(
+    const grpc_sts_credentials_options* options, grpc_uri** sts_url_out) {
+  struct GrpcUriDeleter {
+    void operator()(grpc_uri* uri) { grpc_uri_destroy(uri); }
+  };
+  *sts_url_out = nullptr;
+  InlinedVector<grpc_error*, 3> error_list;
+  std::unique_ptr<grpc_uri, GrpcUriDeleter> sts_url(
+      options->token_exchange_service_uri != nullptr
+          ? grpc_uri_parse(options->token_exchange_service_uri, false)
+          : nullptr);
+  if (sts_url == nullptr) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Invalid or missing STS endpoint URL"));
+  } else {
+    if (strcmp(sts_url->scheme, "https") != 0 &&
+        strcmp(sts_url->scheme, "http") != 0) {
+      error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Invalid URI scheme, must be https to http."));
+    }
+  }
+  if (options->subject_token_path == nullptr ||
+      strlen(options->subject_token_path) == 0) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "subject_token needs to be specified"));
+  }
+  if (options->subject_token_type == nullptr ||
+      strlen(options->subject_token_type) == 0) {
+    error_list.push_back(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "subject_token_type needs to be specified"));
+  }
+  if (error_list.empty()) {
+    *sts_url_out = sts_url.release();
+    return GRPC_ERROR_NONE;
+  } else {
+    return GRPC_ERROR_CREATE_FROM_VECTOR("Invalid STS Credentials Options",
+                                         &error_list);
+  }
+}
+
+}  // namespace grpc_core
+
+grpc_call_credentials* grpc_sts_credentials_create(
+    const grpc_sts_credentials_options* options, void* reserved) {
+  GPR_ASSERT(reserved == nullptr);
+  grpc_uri* sts_url;
+  grpc_error* error =
+      grpc_core::ValidateStsCredentialsOptions(options, &sts_url);
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "STS Credentials creation failed. Error: %s.",
+            grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_core::StsTokenFetcherCredentials>(
+             sts_url, options)
+      .release();
+}
+
+//
+// Oauth2 Access Token credentials.
+//
+
+grpc_access_token_credentials::~grpc_access_token_credentials() {
+  GRPC_MDELEM_UNREF(access_token_md_);
+}
+
+bool grpc_access_token_credentials::get_request_metadata(
+    grpc_polling_entity* /*pollent*/, grpc_auth_metadata_context /*context*/,
+    grpc_credentials_mdelem_array* md_array,
+    grpc_closure* /*on_request_metadata*/, grpc_error** /*error*/) {
+  grpc_credentials_mdelem_array_add(md_array, access_token_md_);
+  return true;
+}
+
+void grpc_access_token_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* /*md_array*/, grpc_error* error) {
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_access_token_credentials::grpc_access_token_credentials(
+    const char* access_token)
+    : grpc_call_credentials(GRPC_CALL_CREDENTIALS_TYPE_OAUTH2) {
+  char* token_md_value;
+  gpr_asprintf(&token_md_value, "Bearer %s", access_token);
+  grpc_core::ExecCtx exec_ctx;
+  access_token_md_ = grpc_mdelem_from_slices(
+      grpc_core::ExternallyManagedSlice(GRPC_AUTHORIZATION_METADATA_KEY),
+      grpc_core::UnmanagedMemorySlice(token_md_value));
+  gpr_free(token_md_value);
+}
+
+grpc_call_credentials* grpc_access_token_credentials_create(
+    const char* access_token, void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_access_token_credentials_create(access_token=<redacted>, "
+      "reserved=%p)",
+      1, (reserved));
+  GPR_ASSERT(reserved == nullptr);
+  return grpc_core::MakeRefCounted<grpc_access_token_credentials>(access_token)
+      .release();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.h
new file mode 100644
index 0000000..9757952
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/oauth2/oauth2_credentials.h	
@@ -0,0 +1,165 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/uri/uri_parser.h"
+
+// Constants.
+#define GRPC_STS_POST_MINIMAL_BODY_FORMAT_STRING                               \
+  "grant_type=urn:ietf:params:oauth:grant-type:token-exchange&subject_token=%" \
+  "s&subject_token_type=%s"
+
+// auth_refresh_token parsing.
+typedef struct {
+  const char* type;
+  char* client_id;
+  char* client_secret;
+  char* refresh_token;
+} grpc_auth_refresh_token;
+
+/// Returns 1 if the object is valid, 0 otherwise.
+int grpc_auth_refresh_token_is_valid(
+    const grpc_auth_refresh_token* refresh_token);
+
+/// Creates a refresh token object from string. Returns an invalid object if a
+/// parsing error has been encountered.
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_string(
+    const char* json_string);
+
+/// Creates a refresh token object from parsed json. Returns an invalid object
+/// if a parsing error has been encountered.
+grpc_auth_refresh_token grpc_auth_refresh_token_create_from_json(
+    const grpc_core::Json& json);
+
+/// Destructs the object.
+void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token* refresh_token);
+
+// -- Oauth2 Token Fetcher credentials --
+//
+//  This object is a base for credentials that need to acquire an oauth2 token
+//  from an http service.
+
+struct grpc_oauth2_pending_get_request_metadata {
+  grpc_credentials_mdelem_array* md_array;
+  grpc_closure* on_request_metadata;
+  grpc_polling_entity* pollent;
+  struct grpc_oauth2_pending_get_request_metadata* next;
+};
+
+class grpc_oauth2_token_fetcher_credentials : public grpc_call_credentials {
+ public:
+  grpc_oauth2_token_fetcher_credentials();
+  ~grpc_oauth2_token_fetcher_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  void on_http_response(grpc_credentials_metadata_request* r,
+                        grpc_error* error);
+
+ protected:
+  virtual void fetch_oauth2(grpc_credentials_metadata_request* req,
+                            grpc_httpcli_context* httpcli_context,
+                            grpc_polling_entity* pollent, grpc_iomgr_cb_func cb,
+                            grpc_millis deadline) = 0;
+
+ private:
+  gpr_mu mu_;
+  grpc_mdelem access_token_md_ = GRPC_MDNULL;
+  gpr_timespec token_expiration_;
+  bool token_fetch_pending_ = false;
+  grpc_oauth2_pending_get_request_metadata* pending_requests_ = nullptr;
+  grpc_httpcli_context httpcli_context_;
+  grpc_polling_entity pollent_;
+};
+
+// Google refresh token credentials.
+class grpc_google_refresh_token_credentials final
+    : public grpc_oauth2_token_fetcher_credentials {
+ public:
+  grpc_google_refresh_token_credentials(grpc_auth_refresh_token refresh_token);
+  ~grpc_google_refresh_token_credentials() override;
+
+  const grpc_auth_refresh_token& refresh_token() const {
+    return refresh_token_;
+  }
+
+ protected:
+  void fetch_oauth2(grpc_credentials_metadata_request* req,
+                    grpc_httpcli_context* httpcli_context,
+                    grpc_polling_entity* pollent, grpc_iomgr_cb_func cb,
+                    grpc_millis deadline) override;
+
+ private:
+  grpc_auth_refresh_token refresh_token_;
+  grpc_closure http_post_cb_closure_;
+};
+
+// Access token credentials.
+class grpc_access_token_credentials final : public grpc_call_credentials {
+ public:
+  grpc_access_token_credentials(const char* access_token);
+  ~grpc_access_token_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+ private:
+  grpc_mdelem access_token_md_;
+};
+
+// Private constructor for refresh token credentials from an already parsed
+// refresh token. Takes ownership of the refresh token.
+grpc_core::RefCountedPtr<grpc_call_credentials>
+grpc_refresh_token_credentials_create_from_auth_refresh_token(
+    grpc_auth_refresh_token token);
+
+// Exposed for testing only.
+grpc_credentials_status
+grpc_oauth2_token_fetcher_credentials_parse_server_response(
+    const struct grpc_http_response* response, grpc_mdelem* token_md,
+    grpc_millis* token_lifetime);
+
+namespace grpc_core {
+// Exposed for testing only. This function validates the options, ensuring that
+// the required fields are set, and outputs the parsed URL of the STS token
+// exchanged service.
+grpc_error* ValidateStsCredentialsOptions(
+    const grpc_sts_credentials_options* options, grpc_uri** sts_url);
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_OAUTH2_OAUTH2_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.cc
new file mode 100644
index 0000000..24351bc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.cc	
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/plugin/plugin_credentials.h"
+
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/validate_metadata.h"
+
+grpc_core::TraceFlag grpc_plugin_credentials_trace(false, "plugin_credentials");
+
+grpc_plugin_credentials::~grpc_plugin_credentials() {
+  gpr_mu_destroy(&mu_);
+  if (plugin_.state != nullptr && plugin_.destroy != nullptr) {
+    plugin_.destroy(plugin_.state);
+  }
+}
+
+void grpc_plugin_credentials::pending_request_remove_locked(
+    pending_request* pending_request) {
+  if (pending_request->prev == nullptr) {
+    pending_requests_ = pending_request->next;
+  } else {
+    pending_request->prev->next = pending_request->next;
+  }
+  if (pending_request->next != nullptr) {
+    pending_request->next->prev = pending_request->prev;
+  }
+}
+
+// Checks if the request has been cancelled.
+// If not, removes it from the pending list, so that it cannot be
+// cancelled out from under us.
+// When this returns, r->cancelled indicates whether the request was
+// cancelled before completion.
+void grpc_plugin_credentials::pending_request_complete(pending_request* r) {
+  GPR_DEBUG_ASSERT(r->creds == this);
+  gpr_mu_lock(&mu_);
+  if (!r->cancelled) pending_request_remove_locked(r);
+  gpr_mu_unlock(&mu_);
+  // Ref to credentials not needed anymore.
+  Unref();
+}
+
+static grpc_error* process_plugin_result(
+    grpc_plugin_credentials::pending_request* r, const grpc_metadata* md,
+    size_t num_md, grpc_status_code status, const char* error_details) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (status != GRPC_STATUS_OK) {
+    char* msg;
+    gpr_asprintf(&msg, "Getting metadata from plugin failed with error: %s",
+                 error_details);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+  } else {
+    bool seen_illegal_header = false;
+    for (size_t i = 0; i < num_md; ++i) {
+      if (!GRPC_LOG_IF_ERROR("validate_metadata_from_plugin",
+                             grpc_validate_header_key_is_legal(md[i].key))) {
+        seen_illegal_header = true;
+        break;
+      } else if (!grpc_is_binary_header_internal(md[i].key) &&
+                 !GRPC_LOG_IF_ERROR(
+                     "validate_metadata_from_plugin",
+                     grpc_validate_header_nonbin_value_is_legal(md[i].value))) {
+        gpr_log(GPR_ERROR, "Plugin added invalid metadata value.");
+        seen_illegal_header = true;
+        break;
+      }
+    }
+    if (seen_illegal_header) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Illegal metadata");
+    } else {
+      for (size_t i = 0; i < num_md; ++i) {
+        grpc_mdelem mdelem =
+            grpc_mdelem_create(md[i].key, md[i].value, nullptr);
+        grpc_credentials_mdelem_array_add(r->md_array, mdelem);
+        GRPC_MDELEM_UNREF(mdelem);
+      }
+    }
+  }
+  return error;
+}
+
+static void plugin_md_request_metadata_ready(void* request,
+                                             const grpc_metadata* md,
+                                             size_t num_md,
+                                             grpc_status_code status,
+                                             const char* error_details) {
+  /* called from application code */
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx(GRPC_EXEC_CTX_FLAG_IS_FINISHED |
+                              GRPC_EXEC_CTX_FLAG_THREAD_RESOURCE_LOOP);
+  grpc_plugin_credentials::pending_request* r =
+      static_cast<grpc_plugin_credentials::pending_request*>(request);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+    gpr_log(GPR_INFO,
+            "plugin_credentials[%p]: request %p: plugin returned "
+            "asynchronously",
+            r->creds, r);
+  }
+  // Remove request from pending list if not previously cancelled.
+  r->creds->pending_request_complete(r);
+  // If it has not been cancelled, process it.
+  if (!r->cancelled) {
+    grpc_error* error =
+        process_plugin_result(r, md, num_md, status, error_details);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, r->on_request_metadata, error);
+  } else if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+    gpr_log(GPR_INFO,
+            "plugin_credentials[%p]: request %p: plugin was previously "
+            "cancelled",
+            r->creds, r);
+  }
+  gpr_free(r);
+}
+
+bool grpc_plugin_credentials::get_request_metadata(
+    grpc_polling_entity* /*pollent*/, grpc_auth_metadata_context context,
+    grpc_credentials_mdelem_array* md_array, grpc_closure* on_request_metadata,
+    grpc_error** error) {
+  bool retval = true;  // Synchronous return.
+  if (plugin_.get_metadata != nullptr) {
+    // Create pending_request object.
+    pending_request* request =
+        static_cast<pending_request*>(gpr_zalloc(sizeof(*request)));
+    request->creds = this;
+    request->md_array = md_array;
+    request->on_request_metadata = on_request_metadata;
+    // Add it to the pending list.
+    gpr_mu_lock(&mu_);
+    if (pending_requests_ != nullptr) {
+      pending_requests_->prev = request;
+    }
+    request->next = pending_requests_;
+    pending_requests_ = request;
+    gpr_mu_unlock(&mu_);
+    // Invoke the plugin.  The callback holds a ref to us.
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+      gpr_log(GPR_INFO, "plugin_credentials[%p]: request %p: invoking plugin",
+              this, request);
+    }
+    Ref().release();
+    grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX];
+    size_t num_creds_md = 0;
+    grpc_status_code status = GRPC_STATUS_OK;
+    const char* error_details = nullptr;
+    if (!plugin_.get_metadata(
+            plugin_.state, context, plugin_md_request_metadata_ready, request,
+            creds_md, &num_creds_md, &status, &error_details)) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+        gpr_log(GPR_INFO,
+                "plugin_credentials[%p]: request %p: plugin will return "
+                "asynchronously",
+                this, request);
+      }
+      return false;  // Asynchronous return.
+    }
+    // Returned synchronously.
+    // Remove request from pending list if not previously cancelled.
+    request->creds->pending_request_complete(request);
+    // If the request was cancelled, the error will have been returned
+    // asynchronously by plugin_cancel_get_request_metadata(), so return
+    // false.  Otherwise, process the result.
+    if (request->cancelled) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+        gpr_log(GPR_INFO,
+                "plugin_credentials[%p]: request %p was cancelled, error "
+                "will be returned asynchronously",
+                this, request);
+      }
+      retval = false;
+    } else {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+        gpr_log(GPR_INFO,
+                "plugin_credentials[%p]: request %p: plugin returned "
+                "synchronously",
+                this, request);
+      }
+      *error = process_plugin_result(request, creds_md, num_creds_md, status,
+                                     error_details);
+    }
+    // Clean up.
+    for (size_t i = 0; i < num_creds_md; ++i) {
+      grpc_slice_unref_internal(creds_md[i].key);
+      grpc_slice_unref_internal(creds_md[i].value);
+    }
+    gpr_free((void*)error_details);
+    gpr_free(request);
+  }
+  return retval;
+}
+
+void grpc_plugin_credentials::cancel_get_request_metadata(
+    grpc_credentials_mdelem_array* md_array, grpc_error* error) {
+  gpr_mu_lock(&mu_);
+  for (pending_request* pending_request = pending_requests_;
+       pending_request != nullptr; pending_request = pending_request->next) {
+    if (pending_request->md_array == md_array) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_plugin_credentials_trace)) {
+        gpr_log(GPR_INFO, "plugin_credentials[%p]: cancelling request %p", this,
+                pending_request);
+      }
+      pending_request->cancelled = true;
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION,
+                              pending_request->on_request_metadata,
+                              GRPC_ERROR_REF(error));
+      pending_request_remove_locked(pending_request);
+      break;
+    }
+  }
+  gpr_mu_unlock(&mu_);
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_plugin_credentials::grpc_plugin_credentials(
+    grpc_metadata_credentials_plugin plugin,
+    grpc_security_level min_security_level)
+    : grpc_call_credentials(plugin.type, min_security_level), plugin_(plugin) {
+  gpr_mu_init(&mu_);
+}
+
+grpc_call_credentials* grpc_metadata_credentials_create_from_plugin(
+    grpc_metadata_credentials_plugin plugin,
+    grpc_security_level min_security_level, void* reserved) {
+  GRPC_API_TRACE("grpc_metadata_credentials_create_from_plugin(reserved=%p)", 1,
+                 (reserved));
+  GPR_ASSERT(reserved == nullptr);
+  return new grpc_plugin_credentials(plugin, min_security_level);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.h
new file mode 100644
index 0000000..fb9a7b7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/plugin/plugin_credentials.h	
@@ -0,0 +1,70 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+extern grpc_core::TraceFlag grpc_plugin_credentials_trace;
+
+// This type is forward declared as a C struct and we cannot define it as a
+// class. Otherwise, compiler will complain about type mismatch due to
+// -Wmismatched-tags.
+struct grpc_plugin_credentials final : public grpc_call_credentials {
+ public:
+  struct pending_request {
+    bool cancelled;
+    struct grpc_plugin_credentials* creds;
+    grpc_credentials_mdelem_array* md_array;
+    grpc_closure* on_request_metadata;
+    struct pending_request* prev;
+    struct pending_request* next;
+  };
+
+  explicit grpc_plugin_credentials(grpc_metadata_credentials_plugin plugin,
+                                   grpc_security_level min_security_level);
+  ~grpc_plugin_credentials() override;
+
+  bool get_request_metadata(grpc_polling_entity* pollent,
+                            grpc_auth_metadata_context context,
+                            grpc_credentials_mdelem_array* md_array,
+                            grpc_closure* on_request_metadata,
+                            grpc_error** error) override;
+
+  void cancel_get_request_metadata(grpc_credentials_mdelem_array* md_array,
+                                   grpc_error* error) override;
+
+  // Checks if the request has been cancelled.
+  // If not, removes it from the pending list, so that it cannot be
+  // cancelled out from under us.
+  // When this returns, r->cancelled indicates whether the request was
+  // cancelled before completion.
+  void pending_request_complete(pending_request* r);
+
+ private:
+  void pending_request_remove_locked(pending_request* pending_request);
+
+  grpc_metadata_credentials_plugin plugin_;
+  gpr_mu mu_;
+  pending_request* pending_requests_ = nullptr;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.cc
new file mode 100644
index 0000000..48d78f3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.cc	
@@ -0,0 +1,364 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/ssl/ssl_credentials.h"
+
+#include <string.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/tsi/ssl_transport_security.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+//
+// SSL Channel Credentials.
+//
+
+void grpc_tsi_ssl_pem_key_cert_pairs_destroy(tsi_ssl_pem_key_cert_pair* kp,
+                                             size_t num_key_cert_pairs) {
+  if (kp == nullptr) return;
+  for (size_t i = 0; i < num_key_cert_pairs; i++) {
+    gpr_free((void*)kp[i].private_key);
+    gpr_free((void*)kp[i].cert_chain);
+  }
+  gpr_free(kp);
+}
+
+grpc_ssl_credentials::grpc_ssl_credentials(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const grpc_ssl_verify_peer_options* verify_options)
+    : grpc_channel_credentials(GRPC_CHANNEL_CREDENTIALS_TYPE_SSL) {
+  build_config(pem_root_certs, pem_key_cert_pair, verify_options);
+}
+
+grpc_ssl_credentials::~grpc_ssl_credentials() {
+  gpr_free(config_.pem_root_certs);
+  grpc_tsi_ssl_pem_key_cert_pairs_destroy(config_.pem_key_cert_pair, 1);
+  if (config_.verify_options.verify_peer_destruct != nullptr) {
+    config_.verify_options.verify_peer_destruct(
+        config_.verify_options.verify_peer_callback_userdata);
+  }
+}
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_ssl_credentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+    const char* target, const grpc_channel_args* args,
+    grpc_channel_args** new_args) {
+  const char* overridden_target_name = nullptr;
+  tsi_ssl_session_cache* ssl_session_cache = nullptr;
+  for (size_t i = 0; args && i < args->num_args; i++) {
+    grpc_arg* arg = &args->args[i];
+    if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 &&
+        arg->type == GRPC_ARG_STRING) {
+      overridden_target_name = arg->value.string;
+    }
+    if (strcmp(arg->key, GRPC_SSL_SESSION_CACHE_ARG) == 0 &&
+        arg->type == GRPC_ARG_POINTER) {
+      ssl_session_cache =
+          static_cast<tsi_ssl_session_cache*>(arg->value.pointer.p);
+    }
+  }
+  grpc_core::RefCountedPtr<grpc_channel_security_connector> sc =
+      grpc_ssl_channel_security_connector_create(
+          this->Ref(), std::move(call_creds), &config_, target,
+          overridden_target_name, ssl_session_cache);
+  if (sc == nullptr) {
+    return sc;
+  }
+  grpc_arg new_arg = grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_HTTP2_SCHEME, (char*)"https");
+  *new_args = grpc_channel_args_copy_and_add(args, &new_arg, 1);
+  return sc;
+}
+
+void grpc_ssl_credentials::build_config(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const grpc_ssl_verify_peer_options* verify_options) {
+  config_.pem_root_certs = gpr_strdup(pem_root_certs);
+  if (pem_key_cert_pair != nullptr) {
+    GPR_ASSERT(pem_key_cert_pair->private_key != nullptr);
+    GPR_ASSERT(pem_key_cert_pair->cert_chain != nullptr);
+    config_.pem_key_cert_pair = static_cast<tsi_ssl_pem_key_cert_pair*>(
+        gpr_zalloc(sizeof(tsi_ssl_pem_key_cert_pair)));
+    config_.pem_key_cert_pair->cert_chain =
+        gpr_strdup(pem_key_cert_pair->cert_chain);
+    config_.pem_key_cert_pair->private_key =
+        gpr_strdup(pem_key_cert_pair->private_key);
+  } else {
+    config_.pem_key_cert_pair = nullptr;
+  }
+  if (verify_options != nullptr) {
+    memcpy(&config_.verify_options, verify_options,
+           sizeof(verify_peer_options));
+  } else {
+    // Otherwise set all options to default values
+    memset(&config_.verify_options, 0, sizeof(verify_peer_options));
+  }
+}
+
+/* Deprecated in favor of grpc_ssl_credentials_create_ex. Will be removed
+ * once all of its call sites are migrated to grpc_ssl_credentials_create_ex. */
+grpc_channel_credentials* grpc_ssl_credentials_create(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const verify_peer_options* verify_options, void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_ssl_credentials_create(pem_root_certs=%s, "
+      "pem_key_cert_pair=%p, "
+      "verify_options=%p, "
+      "reserved=%p)",
+      4, (pem_root_certs, pem_key_cert_pair, verify_options, reserved));
+  GPR_ASSERT(reserved == nullptr);
+
+  return new grpc_ssl_credentials(
+      pem_root_certs, pem_key_cert_pair,
+      reinterpret_cast<const grpc_ssl_verify_peer_options*>(verify_options));
+}
+
+grpc_channel_credentials* grpc_ssl_credentials_create_ex(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const grpc_ssl_verify_peer_options* verify_options, void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_ssl_credentials_create(pem_root_certs=%s, "
+      "pem_key_cert_pair=%p, "
+      "verify_options=%p, "
+      "reserved=%p)",
+      4, (pem_root_certs, pem_key_cert_pair, verify_options, reserved));
+  GPR_ASSERT(reserved == nullptr);
+
+  return new grpc_ssl_credentials(pem_root_certs, pem_key_cert_pair,
+                                  verify_options);
+}
+
+//
+// SSL Server Credentials.
+//
+
+struct grpc_ssl_server_credentials_options {
+  grpc_ssl_client_certificate_request_type client_certificate_request;
+  grpc_ssl_server_certificate_config* certificate_config;
+  grpc_ssl_server_certificate_config_fetcher* certificate_config_fetcher;
+};
+
+grpc_ssl_server_credentials::grpc_ssl_server_credentials(
+    const grpc_ssl_server_credentials_options& options)
+    : grpc_server_credentials(GRPC_CHANNEL_CREDENTIALS_TYPE_SSL) {
+  if (options.certificate_config_fetcher != nullptr) {
+    config_.client_certificate_request = options.client_certificate_request;
+    certificate_config_fetcher_ = *options.certificate_config_fetcher;
+  } else {
+    build_config(options.certificate_config->pem_root_certs,
+                 options.certificate_config->pem_key_cert_pairs,
+                 options.certificate_config->num_key_cert_pairs,
+                 options.client_certificate_request);
+  }
+}
+
+grpc_ssl_server_credentials::~grpc_ssl_server_credentials() {
+  grpc_tsi_ssl_pem_key_cert_pairs_destroy(config_.pem_key_cert_pairs,
+                                          config_.num_key_cert_pairs);
+  gpr_free(config_.pem_root_certs);
+}
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_ssl_server_credentials::create_security_connector() {
+  return grpc_ssl_server_security_connector_create(this->Ref());
+}
+
+tsi_ssl_pem_key_cert_pair* grpc_convert_grpc_to_tsi_cert_pairs(
+    const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs) {
+  tsi_ssl_pem_key_cert_pair* tsi_pairs = nullptr;
+  if (num_key_cert_pairs > 0) {
+    GPR_ASSERT(pem_key_cert_pairs != nullptr);
+    tsi_pairs = static_cast<tsi_ssl_pem_key_cert_pair*>(
+        gpr_zalloc(num_key_cert_pairs * sizeof(tsi_ssl_pem_key_cert_pair)));
+  }
+  for (size_t i = 0; i < num_key_cert_pairs; i++) {
+    GPR_ASSERT(pem_key_cert_pairs[i].private_key != nullptr);
+    GPR_ASSERT(pem_key_cert_pairs[i].cert_chain != nullptr);
+    tsi_pairs[i].cert_chain = gpr_strdup(pem_key_cert_pairs[i].cert_chain);
+    tsi_pairs[i].private_key = gpr_strdup(pem_key_cert_pairs[i].private_key);
+  }
+  return tsi_pairs;
+}
+
+void grpc_ssl_server_credentials::build_config(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs,
+    grpc_ssl_client_certificate_request_type client_certificate_request) {
+  config_.client_certificate_request = client_certificate_request;
+  config_.pem_root_certs = gpr_strdup(pem_root_certs);
+  config_.pem_key_cert_pairs = grpc_convert_grpc_to_tsi_cert_pairs(
+      pem_key_cert_pairs, num_key_cert_pairs);
+  config_.num_key_cert_pairs = num_key_cert_pairs;
+}
+
+grpc_ssl_server_certificate_config* grpc_ssl_server_certificate_config_create(
+    const char* pem_root_certs,
+    const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs) {
+  grpc_ssl_server_certificate_config* config =
+      static_cast<grpc_ssl_server_certificate_config*>(
+          gpr_zalloc(sizeof(grpc_ssl_server_certificate_config)));
+  config->pem_root_certs = gpr_strdup(pem_root_certs);
+  if (num_key_cert_pairs > 0) {
+    GPR_ASSERT(pem_key_cert_pairs != nullptr);
+    config->pem_key_cert_pairs = static_cast<grpc_ssl_pem_key_cert_pair*>(
+        gpr_zalloc(num_key_cert_pairs * sizeof(grpc_ssl_pem_key_cert_pair)));
+  }
+  config->num_key_cert_pairs = num_key_cert_pairs;
+  for (size_t i = 0; i < num_key_cert_pairs; i++) {
+    GPR_ASSERT(pem_key_cert_pairs[i].private_key != nullptr);
+    GPR_ASSERT(pem_key_cert_pairs[i].cert_chain != nullptr);
+    config->pem_key_cert_pairs[i].cert_chain =
+        gpr_strdup(pem_key_cert_pairs[i].cert_chain);
+    config->pem_key_cert_pairs[i].private_key =
+        gpr_strdup(pem_key_cert_pairs[i].private_key);
+  }
+  return config;
+}
+
+void grpc_ssl_server_certificate_config_destroy(
+    grpc_ssl_server_certificate_config* config) {
+  if (config == nullptr) return;
+  for (size_t i = 0; i < config->num_key_cert_pairs; i++) {
+    gpr_free((void*)config->pem_key_cert_pairs[i].private_key);
+    gpr_free((void*)config->pem_key_cert_pairs[i].cert_chain);
+  }
+  gpr_free(config->pem_key_cert_pairs);
+  gpr_free(config->pem_root_certs);
+  gpr_free(config);
+}
+
+grpc_ssl_server_credentials_options*
+grpc_ssl_server_credentials_create_options_using_config(
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    grpc_ssl_server_certificate_config* config) {
+  grpc_ssl_server_credentials_options* options = nullptr;
+  if (config == nullptr) {
+    gpr_log(GPR_ERROR, "Certificate config must not be NULL.");
+    goto done;
+  }
+  options = static_cast<grpc_ssl_server_credentials_options*>(
+      gpr_zalloc(sizeof(grpc_ssl_server_credentials_options)));
+  options->client_certificate_request = client_certificate_request;
+  options->certificate_config = config;
+done:
+  return options;
+}
+
+grpc_ssl_server_credentials_options*
+grpc_ssl_server_credentials_create_options_using_config_fetcher(
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    grpc_ssl_server_certificate_config_callback cb, void* user_data) {
+  if (cb == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid certificate config callback parameter.");
+    return nullptr;
+  }
+
+  grpc_ssl_server_certificate_config_fetcher* fetcher =
+      static_cast<grpc_ssl_server_certificate_config_fetcher*>(
+          gpr_zalloc(sizeof(grpc_ssl_server_certificate_config_fetcher)));
+  fetcher->cb = cb;
+  fetcher->user_data = user_data;
+
+  grpc_ssl_server_credentials_options* options =
+      static_cast<grpc_ssl_server_credentials_options*>(
+          gpr_zalloc(sizeof(grpc_ssl_server_credentials_options)));
+  options->client_certificate_request = client_certificate_request;
+  options->certificate_config_fetcher = fetcher;
+
+  return options;
+}
+
+grpc_server_credentials* grpc_ssl_server_credentials_create(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, int force_client_auth, void* reserved) {
+  return grpc_ssl_server_credentials_create_ex(
+      pem_root_certs, pem_key_cert_pairs, num_key_cert_pairs,
+      force_client_auth
+          ? GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
+          : GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE,
+      reserved);
+}
+
+grpc_server_credentials* grpc_ssl_server_credentials_create_ex(
+    const char* pem_root_certs, grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs,
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_ssl_server_credentials_create_ex("
+      "pem_root_certs=%s, pem_key_cert_pairs=%p, num_key_cert_pairs=%lu, "
+      "client_certificate_request=%d, reserved=%p)",
+      5,
+      (pem_root_certs, pem_key_cert_pairs, (unsigned long)num_key_cert_pairs,
+       client_certificate_request, reserved));
+  GPR_ASSERT(reserved == nullptr);
+
+  grpc_ssl_server_certificate_config* cert_config =
+      grpc_ssl_server_certificate_config_create(
+          pem_root_certs, pem_key_cert_pairs, num_key_cert_pairs);
+  grpc_ssl_server_credentials_options* options =
+      grpc_ssl_server_credentials_create_options_using_config(
+          client_certificate_request, cert_config);
+
+  return grpc_ssl_server_credentials_create_with_options(options);
+}
+
+grpc_server_credentials* grpc_ssl_server_credentials_create_with_options(
+    grpc_ssl_server_credentials_options* options) {
+  grpc_server_credentials* retval = nullptr;
+
+  if (options == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid options trying to create SSL server credentials.");
+    goto done;
+  }
+
+  if (options->certificate_config == nullptr &&
+      options->certificate_config_fetcher == nullptr) {
+    gpr_log(GPR_ERROR,
+            "SSL server credentials options must specify either "
+            "certificate config or fetcher.");
+    goto done;
+  } else if (options->certificate_config_fetcher != nullptr &&
+             options->certificate_config_fetcher->cb == nullptr) {
+    gpr_log(GPR_ERROR, "Certificate config fetcher callback must not be NULL.");
+    goto done;
+  }
+
+  retval = new grpc_ssl_server_credentials(*options);
+
+done:
+  grpc_ssl_server_credentials_options_destroy(options);
+  return retval;
+}
+
+void grpc_ssl_server_credentials_options_destroy(
+    grpc_ssl_server_credentials_options* o) {
+  if (o == nullptr) return;
+  gpr_free(o->certificate_config_fetcher);
+  grpc_ssl_server_certificate_config_destroy(o->certificate_config);
+  gpr_free(o);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.h
new file mode 100644
index 0000000..545a27f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/ssl/ssl_credentials.h	
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+
+#include "src/core/lib/security/security_connector/ssl/ssl_security_connector.h"
+
+class grpc_ssl_credentials : public grpc_channel_credentials {
+ public:
+  grpc_ssl_credentials(const char* pem_root_certs,
+                       grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+                       const grpc_ssl_verify_peer_options* verify_options);
+
+  ~grpc_ssl_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+ private:
+  void build_config(const char* pem_root_certs,
+                    grpc_ssl_pem_key_cert_pair* pem_key_cert_pair,
+                    const grpc_ssl_verify_peer_options* verify_options);
+
+  grpc_ssl_config config_;
+};
+
+struct grpc_ssl_server_certificate_config {
+  grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs = nullptr;
+  size_t num_key_cert_pairs = 0;
+  char* pem_root_certs = nullptr;
+};
+
+struct grpc_ssl_server_certificate_config_fetcher {
+  grpc_ssl_server_certificate_config_callback cb = nullptr;
+  void* user_data;
+};
+
+class grpc_ssl_server_credentials final : public grpc_server_credentials {
+ public:
+  grpc_ssl_server_credentials(
+      const grpc_ssl_server_credentials_options& options);
+  ~grpc_ssl_server_credentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  bool has_cert_config_fetcher() const {
+    return certificate_config_fetcher_.cb != nullptr;
+  }
+
+  grpc_ssl_certificate_config_reload_status FetchCertConfig(
+      grpc_ssl_server_certificate_config** config) {
+    GPR_DEBUG_ASSERT(has_cert_config_fetcher());
+    return certificate_config_fetcher_.cb(certificate_config_fetcher_.user_data,
+                                          config);
+  }
+
+  const grpc_ssl_server_config& config() const { return config_; }
+
+ private:
+  void build_config(
+      const char* pem_root_certs,
+      grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs, size_t num_key_cert_pairs,
+      grpc_ssl_client_certificate_request_type client_certificate_request);
+
+  grpc_ssl_server_config config_;
+  grpc_ssl_server_certificate_config_fetcher certificate_config_fetcher_;
+};
+
+tsi_ssl_pem_key_cert_pair* grpc_convert_grpc_to_tsi_cert_pairs(
+    const grpc_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs);
+
+void grpc_tsi_ssl_pem_key_cert_pairs_destroy(tsi_ssl_pem_key_cert_pair* kp,
+                                             size_t num_key_cert_pairs);
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_SSL_SSL_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.cc
new file mode 100644
index 0000000..937dfac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.cc	
@@ -0,0 +1,235 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+/** -- gRPC TLS key materials config API implementation. -- **/
+void grpc_tls_key_materials_config::set_key_materials(
+    grpc_core::UniquePtr<char> pem_root_certs,
+    PemKeyCertPairList pem_key_cert_pair_list) {
+  pem_key_cert_pair_list_ = std::move(pem_key_cert_pair_list);
+  pem_root_certs_ = std::move(pem_root_certs);
+}
+
+/** -- gRPC TLS credential reload config API implementation. -- **/
+grpc_tls_credential_reload_config::grpc_tls_credential_reload_config(
+    const void* config_user_data,
+    int (*schedule)(void* config_user_data,
+                    grpc_tls_credential_reload_arg* arg),
+    void (*cancel)(void* config_user_data, grpc_tls_credential_reload_arg* arg),
+    void (*destruct)(void* config_user_data))
+    : config_user_data_(const_cast<void*>(config_user_data)),
+      schedule_(schedule),
+      cancel_(cancel),
+      destruct_(destruct) {}
+
+grpc_tls_credential_reload_config::~grpc_tls_credential_reload_config() {
+  if (destruct_ != nullptr) {
+    destruct_((void*)config_user_data_);
+  }
+}
+
+/** -- gRPC TLS server authorization check API implementation. -- **/
+grpc_tls_server_authorization_check_config::
+    grpc_tls_server_authorization_check_config(
+        const void* config_user_data,
+        int (*schedule)(void* config_user_data,
+                        grpc_tls_server_authorization_check_arg* arg),
+        void (*cancel)(void* config_user_data,
+                       grpc_tls_server_authorization_check_arg* arg),
+        void (*destruct)(void* config_user_data))
+    : config_user_data_(const_cast<void*>(config_user_data)),
+      schedule_(schedule),
+      cancel_(cancel),
+      destruct_(destruct) {}
+
+grpc_tls_server_authorization_check_config::
+    ~grpc_tls_server_authorization_check_config() {
+  if (destruct_ != nullptr) {
+    destruct_((void*)config_user_data_);
+  }
+}
+
+/** -- Wrapper APIs declared in grpc_security.h -- **/
+grpc_tls_credentials_options* grpc_tls_credentials_options_create() {
+  return new grpc_tls_credentials_options();
+}
+
+int grpc_tls_credentials_options_set_cert_request_type(
+    grpc_tls_credentials_options* options,
+    grpc_ssl_client_certificate_request_type type) {
+  if (options == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_tls_credentials_options_set_cert_request_type()");
+    return 0;
+  }
+  options->set_cert_request_type(type);
+  return 1;
+}
+
+int grpc_tls_credentials_options_set_server_verification_option(
+    grpc_tls_credentials_options* options,
+    grpc_tls_server_verification_option server_verification_option) {
+  if (options == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_tls_credentials_options_set_server_verification_option()");
+    return 0;
+  }
+  if (server_verification_option != GRPC_TLS_SERVER_VERIFICATION &&
+      options->server_authorization_check_config() == nullptr) {
+    gpr_log(GPR_ERROR,
+            "server_authorization_check_config needs to be specified when"
+            "server_verification_option is not GRPC_TLS_SERVER_VERIFICATION");
+    return 0;
+  }
+  options->set_server_verification_option(server_verification_option);
+  return 1;
+}
+
+int grpc_tls_credentials_options_set_key_materials_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_key_materials_config* config) {
+  if (options == nullptr || config == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_tls_credentials_options_set_key_materials_config()");
+    return 0;
+  }
+  options->set_key_materials_config(config->Ref());
+  return 1;
+}
+
+int grpc_tls_credentials_options_set_credential_reload_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_credential_reload_config* config) {
+  if (options == nullptr || config == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_tls_credentials_options_set_credential_reload_config()");
+    return 0;
+  }
+  options->set_credential_reload_config(config->Ref());
+  return 1;
+}
+
+int grpc_tls_credentials_options_set_server_authorization_check_config(
+    grpc_tls_credentials_options* options,
+    grpc_tls_server_authorization_check_config* config) {
+  if (options == nullptr || config == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to "
+        "grpc_tls_credentials_options_set_server_authorization_check_config()");
+    return 0;
+  }
+  options->set_server_authorization_check_config(config->Ref());
+  return 1;
+}
+
+grpc_tls_key_materials_config* grpc_tls_key_materials_config_create() {
+  return new grpc_tls_key_materials_config();
+}
+
+int grpc_tls_key_materials_config_set_key_materials(
+    grpc_tls_key_materials_config* config, const char* root_certs,
+    const grpc_ssl_pem_key_cert_pair** key_cert_pairs, size_t num) {
+  if (config == nullptr || key_cert_pairs == nullptr || num == 0) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to "
+            "grpc_tls_key_materials_config_set_key_materials()");
+    return 0;
+  }
+  grpc_core::UniquePtr<char> pem_root(const_cast<char*>(root_certs));
+  grpc_tls_key_materials_config::PemKeyCertPairList cert_pair_list;
+  for (size_t i = 0; i < num; i++) {
+    grpc_core::PemKeyCertPair key_cert_pair(
+        const_cast<grpc_ssl_pem_key_cert_pair*>(key_cert_pairs[i]));
+    cert_pair_list.emplace_back(std::move(key_cert_pair));
+  }
+  config->set_key_materials(std::move(pem_root), std::move(cert_pair_list));
+  gpr_free(key_cert_pairs);
+  return 1;
+}
+
+int grpc_tls_key_materials_config_set_version(
+    grpc_tls_key_materials_config* config, int version) {
+  if (config == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to "
+            "grpc_tls_key_materials_config_set_version()");
+    return 0;
+  }
+  config->set_version(version);
+  return 1;
+}
+
+int grpc_tls_key_materials_config_get_version(
+    grpc_tls_key_materials_config* config) {
+  if (config == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to "
+            "grpc_tls_key_materials_config_get_version()");
+    return -1;
+  }
+  return config->version();
+}
+
+grpc_tls_credential_reload_config* grpc_tls_credential_reload_config_create(
+    const void* config_user_data,
+    int (*schedule)(void* config_user_data,
+                    grpc_tls_credential_reload_arg* arg),
+    void (*cancel)(void* config_user_data, grpc_tls_credential_reload_arg* arg),
+    void (*destruct)(void* config_user_data)) {
+  if (schedule == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Schedule API is nullptr in creating TLS credential reload config.");
+    return nullptr;
+  }
+  return new grpc_tls_credential_reload_config(config_user_data, schedule,
+                                               cancel, destruct);
+}
+
+grpc_tls_server_authorization_check_config*
+grpc_tls_server_authorization_check_config_create(
+    const void* config_user_data,
+    int (*schedule)(void* config_user_data,
+                    grpc_tls_server_authorization_check_arg* arg),
+    void (*cancel)(void* config_user_data,
+                   grpc_tls_server_authorization_check_arg* arg),
+    void (*destruct)(void* config_user_data)) {
+  if (schedule == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Schedule API is nullptr in creating TLS server authorization "
+            "check config.");
+    return nullptr;
+  }
+  return new grpc_tls_server_authorization_check_config(
+      config_user_data, schedule, cancel, destruct);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h
new file mode 100644
index 0000000..a9e2495
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h	
@@ -0,0 +1,286 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+
+/** TLS key materials config. **/
+struct grpc_tls_key_materials_config
+    : public grpc_core::RefCounted<grpc_tls_key_materials_config> {
+ public:
+  typedef grpc_core::InlinedVector<grpc_core::PemKeyCertPair, 1>
+      PemKeyCertPairList;
+
+  /** Getters for member fields. **/
+  const char* pem_root_certs() const { return pem_root_certs_.get(); }
+  const PemKeyCertPairList& pem_key_cert_pair_list() const {
+    return pem_key_cert_pair_list_;
+  }
+  int version() const { return version_; }
+
+  /** Setters for member fields. **/
+  void set_pem_root_certs(grpc_core::UniquePtr<char> pem_root_certs) {
+    pem_root_certs_ = std::move(pem_root_certs);
+  }
+  void add_pem_key_cert_pair(grpc_core::PemKeyCertPair pem_key_cert_pair) {
+    pem_key_cert_pair_list_.push_back(pem_key_cert_pair);
+  }
+  void set_key_materials(grpc_core::UniquePtr<char> pem_root_certs,
+                         PemKeyCertPairList pem_key_cert_pair_list);
+  void set_version(int version) { version_ = version; }
+
+ private:
+  int version_ = 0;
+  PemKeyCertPairList pem_key_cert_pair_list_;
+  grpc_core::UniquePtr<char> pem_root_certs_;
+};
+
+/** TLS credential reload config. **/
+struct grpc_tls_credential_reload_config
+    : public grpc_core::RefCounted<grpc_tls_credential_reload_config> {
+ public:
+  grpc_tls_credential_reload_config(
+      const void* config_user_data,
+      int (*schedule)(void* config_user_data,
+                      grpc_tls_credential_reload_arg* arg),
+      void (*cancel)(void* config_user_data,
+                     grpc_tls_credential_reload_arg* arg),
+      void (*destruct)(void* config_user_data));
+  ~grpc_tls_credential_reload_config();
+
+  void* context() const { return context_; }
+  void set_context(void* context) { context_ = context; }
+
+  int Schedule(grpc_tls_credential_reload_arg* arg) const {
+    if (schedule_ == nullptr) {
+      gpr_log(GPR_ERROR, "schedule API is nullptr");
+      if (arg != nullptr) {
+        arg->status = GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL;
+        arg->error_details =
+            gpr_strdup("schedule API in credential reload config is nullptr");
+      }
+      return 1;
+    }
+    if (arg != nullptr) {
+      arg->config = const_cast<grpc_tls_credential_reload_config*>(this);
+    }
+    return schedule_(config_user_data_, arg);
+  }
+  void Cancel(grpc_tls_credential_reload_arg* arg) const {
+    if (cancel_ == nullptr) {
+      gpr_log(GPR_ERROR, "cancel API is nullptr.");
+      if (arg != nullptr) {
+        arg->status = GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL;
+        arg->error_details =
+            gpr_strdup("cancel API in credential reload config is nullptr");
+      }
+      return;
+    }
+    if (arg != nullptr) {
+      arg->config = const_cast<grpc_tls_credential_reload_config*>(this);
+    }
+    cancel_(config_user_data_, arg);
+  }
+
+ private:
+  /** This is a pointer to the wrapped language implementation of
+   * grpc_tls_credential_reload_config. It is necessary to implement the C
+   * schedule and cancel functions, given the schedule or cancel function in a
+   * wrapped language. **/
+  void* context_ = nullptr;
+  /** config-specific, read-only user data that works for all channels created
+     with a credential using the config. */
+  void* config_user_data_;
+  /** callback function for invoking credential reload API. The implementation
+     of this method has to be non-blocking, but can be performed synchronously
+     or asynchronously.
+     If processing occurs synchronously, it populates \a arg->key_materials, \a
+     arg->status, and \a arg->error_details and returns zero.
+     If processing occurs asynchronously, it returns a non-zero value.
+     Application then invokes \a arg->cb when processing is completed. Note that
+     \a arg->cb cannot be invoked before \a schedule returns.
+  */
+  int (*schedule_)(void* config_user_data, grpc_tls_credential_reload_arg* arg);
+  /** callback function for cancelling a credential reload request scheduled via
+     an asynchronous \a schedule. \a arg is used to pinpoint an exact reloading
+     request to be cancelled, and the operation may not have any effect if the
+     request has already been processed. */
+  void (*cancel_)(void* config_user_data, grpc_tls_credential_reload_arg* arg);
+  /** callback function for cleaning up any data associated with credential
+     reload config. */
+  void (*destruct_)(void* config_user_data);
+};
+
+/** TLS server authorization check config. **/
+struct grpc_tls_server_authorization_check_config
+    : public grpc_core::RefCounted<grpc_tls_server_authorization_check_config> {
+ public:
+  grpc_tls_server_authorization_check_config(
+      const void* config_user_data,
+      int (*schedule)(void* config_user_data,
+                      grpc_tls_server_authorization_check_arg* arg),
+      void (*cancel)(void* config_user_data,
+                     grpc_tls_server_authorization_check_arg* arg),
+      void (*destruct)(void* config_user_data));
+  ~grpc_tls_server_authorization_check_config();
+
+  void* context() const { return context_; }
+  void set_context(void* context) { context_ = context; }
+
+  int Schedule(grpc_tls_server_authorization_check_arg* arg) const {
+    if (schedule_ == nullptr) {
+      gpr_log(GPR_ERROR, "schedule API is nullptr");
+      if (arg != nullptr) {
+        arg->status = GRPC_STATUS_NOT_FOUND;
+        arg->error_details = gpr_strdup(
+            "schedule API in server authorization check config is nullptr");
+      }
+      return 1;
+    }
+    if (arg != nullptr && context_ != nullptr) {
+      arg->config =
+          const_cast<grpc_tls_server_authorization_check_config*>(this);
+    }
+    return schedule_(config_user_data_, arg);
+  }
+  void Cancel(grpc_tls_server_authorization_check_arg* arg) const {
+    if (cancel_ == nullptr) {
+      gpr_log(GPR_ERROR, "cancel API is nullptr.");
+      if (arg != nullptr) {
+        arg->status = GRPC_STATUS_NOT_FOUND;
+        arg->error_details = gpr_strdup(
+            "schedule API in server authorization check config is nullptr");
+      }
+      return;
+    }
+    if (arg != nullptr) {
+      arg->config =
+          const_cast<grpc_tls_server_authorization_check_config*>(this);
+    }
+    cancel_(config_user_data_, arg);
+  }
+
+ private:
+  /** This is a pointer to the wrapped language implementation of
+   * grpc_tls_server_authorization_check_config. It is necessary to implement
+   * the C schedule and cancel functions, given the schedule or cancel function
+   * in a wrapped language. **/
+  void* context_ = nullptr;
+  /** config-specific, read-only user data that works for all channels created
+     with a Credential using the config. */
+  void* config_user_data_;
+
+  /** callback function for invoking server authorization check. The
+     implementation of this method has to be non-blocking, but can be performed
+     synchronously or asynchronously.
+     If processing occurs synchronously, it populates \a arg->result, \a
+     arg->status, and \a arg->error_details, and returns zero.
+     If processing occurs asynchronously, it returns a non-zero value.
+     Application then invokes \a arg->cb when processing is completed. Note that
+     \a arg->cb cannot be invoked before \a schedule() returns.
+  */
+  int (*schedule_)(void* config_user_data,
+                   grpc_tls_server_authorization_check_arg* arg);
+
+  /** callback function for canceling a server authorization check request. */
+  void (*cancel_)(void* config_user_data,
+                  grpc_tls_server_authorization_check_arg* arg);
+
+  /** callback function for cleaning up any data associated with server
+     authorization check config. */
+  void (*destruct_)(void* config_user_data);
+};
+
+/* TLS credentials options. */
+struct grpc_tls_credentials_options
+    : public grpc_core::RefCounted<grpc_tls_credentials_options> {
+ public:
+  ~grpc_tls_credentials_options() {
+    if (key_materials_config_.get() != nullptr) {
+      key_materials_config_.get()->Unref();
+    }
+    if (credential_reload_config_.get() != nullptr) {
+      credential_reload_config_.get()->Unref();
+    }
+    if (server_authorization_check_config_.get() != nullptr) {
+      server_authorization_check_config_.get()->Unref();
+    }
+  }
+
+  /* Getters for member fields. */
+  grpc_ssl_client_certificate_request_type cert_request_type() const {
+    return cert_request_type_;
+  }
+  grpc_tls_server_verification_option server_verification_option() const {
+    return server_verification_option_;
+  }
+  grpc_tls_key_materials_config* key_materials_config() const {
+    return key_materials_config_.get();
+  }
+  grpc_tls_credential_reload_config* credential_reload_config() const {
+    return credential_reload_config_.get();
+  }
+  grpc_tls_server_authorization_check_config*
+  server_authorization_check_config() const {
+    return server_authorization_check_config_.get();
+  }
+
+  /* Setters for member fields. */
+  void set_cert_request_type(
+      const grpc_ssl_client_certificate_request_type type) {
+    cert_request_type_ = type;
+  }
+  void set_server_verification_option(
+      const grpc_tls_server_verification_option server_verification_option) {
+    server_verification_option_ = server_verification_option;
+  }
+  void set_key_materials_config(
+      grpc_core::RefCountedPtr<grpc_tls_key_materials_config> config) {
+    key_materials_config_ = std::move(config);
+  }
+  void set_credential_reload_config(
+      grpc_core::RefCountedPtr<grpc_tls_credential_reload_config> config) {
+    credential_reload_config_ = std::move(config);
+  }
+  void set_server_authorization_check_config(
+      grpc_core::RefCountedPtr<grpc_tls_server_authorization_check_config>
+          config) {
+    server_authorization_check_config_ = std::move(config);
+  }
+
+ private:
+  grpc_ssl_client_certificate_request_type cert_request_type_;
+  grpc_tls_server_verification_option server_verification_option_ =
+      GRPC_TLS_SERVER_VERIFICATION;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+  grpc_core::RefCountedPtr<grpc_tls_credential_reload_config>
+      credential_reload_config_;
+  grpc_core::RefCountedPtr<grpc_tls_server_authorization_check_config>
+      server_authorization_check_config_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_GRPC_TLS_CREDENTIALS_OPTIONS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.cc
new file mode 100644
index 0000000..701fd3b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.cc	
@@ -0,0 +1,128 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/credentials/tls/tls_credentials.h"
+
+#include <cstring>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/security/security_connector/tls/tls_security_connector.h"
+
+#define GRPC_CREDENTIALS_TYPE_TLS "Tls"
+
+namespace {
+
+bool CredentialOptionSanityCheck(const grpc_tls_credentials_options* options,
+                                 bool is_client) {
+  if (options == nullptr) {
+    gpr_log(GPR_ERROR, "TLS credentials options is nullptr.");
+    return false;
+  }
+  if (options->key_materials_config() == nullptr &&
+      options->credential_reload_config() == nullptr) {
+    gpr_log(GPR_ERROR,
+            "TLS credentials options must specify either key materials or "
+            "credential reload config.");
+    return false;
+  }
+  if (!is_client && options->server_authorization_check_config() != nullptr) {
+    gpr_log(GPR_INFO,
+            "Server's credentials options should not contain server "
+            "authorization check config.");
+  }
+  return true;
+}
+
+}  // namespace
+
+TlsCredentials::TlsCredentials(
+    grpc_core::RefCountedPtr<grpc_tls_credentials_options> options)
+    : grpc_channel_credentials(GRPC_CREDENTIALS_TYPE_TLS),
+      options_(std::move(options)) {}
+
+TlsCredentials::~TlsCredentials() {}
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+TlsCredentials::create_security_connector(
+    grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+    const char* target_name, const grpc_channel_args* args,
+    grpc_channel_args** new_args) {
+  const char* overridden_target_name = nullptr;
+  tsi_ssl_session_cache* ssl_session_cache = nullptr;
+  for (size_t i = 0; args != nullptr && i < args->num_args; i++) {
+    grpc_arg* arg = &args->args[i];
+    if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 &&
+        arg->type == GRPC_ARG_STRING) {
+      overridden_target_name = arg->value.string;
+    }
+    if (strcmp(arg->key, GRPC_SSL_SESSION_CACHE_ARG) == 0 &&
+        arg->type == GRPC_ARG_POINTER) {
+      ssl_session_cache =
+          static_cast<tsi_ssl_session_cache*>(arg->value.pointer.p);
+    }
+  }
+  grpc_core::RefCountedPtr<grpc_channel_security_connector> sc =
+      grpc_core::TlsChannelSecurityConnector::CreateTlsChannelSecurityConnector(
+          this->Ref(), std::move(call_creds), target_name,
+          overridden_target_name, ssl_session_cache);
+  if (sc == nullptr) {
+    return nullptr;
+  }
+  grpc_arg new_arg = grpc_channel_arg_string_create(
+      (char*)GRPC_ARG_HTTP2_SCHEME, (char*)"https");
+  *new_args = grpc_channel_args_copy_and_add(args, &new_arg, 1);
+  return sc;
+}
+
+TlsServerCredentials::TlsServerCredentials(
+    grpc_core::RefCountedPtr<grpc_tls_credentials_options> options)
+    : grpc_server_credentials(GRPC_CREDENTIALS_TYPE_TLS),
+      options_(std::move(options)) {}
+
+TlsServerCredentials::~TlsServerCredentials() {}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+TlsServerCredentials::create_security_connector() {
+  return grpc_core::TlsServerSecurityConnector::
+      CreateTlsServerSecurityConnector(this->Ref());
+}
+
+grpc_channel_credentials* grpc_tls_credentials_create(
+    grpc_tls_credentials_options* options) {
+  if (!CredentialOptionSanityCheck(options, true /* is_client */)) {
+    return nullptr;
+  }
+  return new TlsCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options>(options));
+}
+
+grpc_server_credentials* grpc_tls_server_credentials_create(
+    grpc_tls_credentials_options* options) {
+  if (!CredentialOptionSanityCheck(options, false /* is_client */)) {
+    return nullptr;
+  }
+  return new TlsServerCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options>(options));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.h
new file mode 100644
index 0000000..388c71f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/credentials/tls/tls_credentials.h	
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+class TlsCredentials final : public grpc_channel_credentials {
+ public:
+  explicit TlsCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options> options);
+  ~TlsCredentials() override;
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  create_security_connector(
+      grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
+      const char* target_name, const grpc_channel_args* args,
+      grpc_channel_args** new_args) override;
+
+  const grpc_tls_credentials_options& options() const { return *options_; }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_tls_credentials_options> options_;
+};
+
+class TlsServerCredentials final : public grpc_server_credentials {
+ public:
+  explicit TlsServerCredentials(
+      grpc_core::RefCountedPtr<grpc_tls_credentials_options> options);
+  ~TlsServerCredentials() override;
+
+  grpc_core::RefCountedPtr<grpc_server_security_connector>
+  create_security_connector() override;
+
+  const grpc_tls_credentials_options& options() const { return *options_; }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_tls_credentials_options> options_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_TLS_TLS_CREDENTIALS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.cc
new file mode 100644
index 0000000..1274edb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.cc	
@@ -0,0 +1,286 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/alts/alts_security_connector.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/credentials/alts/alts_credentials.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/transport.h"
+#include "src/core/tsi/alts/handshaker/alts_tsi_handshaker.h"
+#include "src/core/tsi/transport_security.h"
+
+void grpc_alts_set_rpc_protocol_versions(
+    grpc_gcp_rpc_protocol_versions* rpc_versions) {
+  grpc_gcp_rpc_protocol_versions_set_max(rpc_versions,
+                                         GRPC_PROTOCOL_VERSION_MAX_MAJOR,
+                                         GRPC_PROTOCOL_VERSION_MAX_MINOR);
+  grpc_gcp_rpc_protocol_versions_set_min(rpc_versions,
+                                         GRPC_PROTOCOL_VERSION_MIN_MAJOR,
+                                         GRPC_PROTOCOL_VERSION_MIN_MINOR);
+}
+
+namespace {
+
+void alts_check_peer(tsi_peer peer,
+                     grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                     grpc_closure* on_peer_checked) {
+  *auth_context =
+      grpc_core::internal::grpc_alts_auth_context_from_tsi_peer(&peer);
+  tsi_peer_destruct(&peer);
+  grpc_error* error =
+      *auth_context != nullptr
+          ? GRPC_ERROR_NONE
+          : GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "Could not get ALTS auth context from TSI peer");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+}
+
+class grpc_alts_channel_security_connector final
+    : public grpc_channel_security_connector {
+ public:
+  grpc_alts_channel_security_connector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name)
+      : grpc_channel_security_connector(GRPC_ALTS_URL_SCHEME,
+                                        std::move(channel_creds),
+                                        std::move(request_metadata_creds)),
+        target_name_(gpr_strdup(target_name)) {}
+
+  ~grpc_alts_channel_security_connector() override { gpr_free(target_name_); }
+
+  void add_handshakers(
+      const grpc_channel_args* args, grpc_pollset_set* interested_parties,
+      grpc_core::HandshakeManager* handshake_manager) override {
+    tsi_handshaker* handshaker = nullptr;
+    const grpc_alts_credentials* creds =
+        static_cast<const grpc_alts_credentials*>(channel_creds());
+    GPR_ASSERT(alts_tsi_handshaker_create(creds->options(), target_name_,
+                                          creds->handshaker_service_url(), true,
+                                          interested_parties,
+                                          &handshaker) == TSI_OK);
+    handshake_manager->Add(
+        grpc_core::SecurityHandshakerCreate(handshaker, this, args));
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    alts_check_peer(peer, auth_context, on_peer_checked);
+  }
+
+  int cmp(const grpc_security_connector* other_sc) const override {
+    auto* other =
+        reinterpret_cast<const grpc_alts_channel_security_connector*>(other_sc);
+    int c = channel_security_connector_cmp(other);
+    if (c != 0) return c;
+    return strcmp(target_name_, other->target_name_);
+  }
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* /*auth_context*/,
+                       grpc_closure* /*on_call_host_checked*/,
+                       grpc_error** error) override {
+    if (host.empty() || host != target_name_) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "ALTS call host does not match target name");
+    }
+    return true;
+  }
+
+  void cancel_check_call_host(grpc_closure* /*on_call_host_checked*/,
+                              grpc_error* error) override {
+    GRPC_ERROR_UNREF(error);
+  }
+
+ private:
+  char* target_name_;
+};
+
+class grpc_alts_server_security_connector final
+    : public grpc_server_security_connector {
+ public:
+  grpc_alts_server_security_connector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+      : grpc_server_security_connector(GRPC_ALTS_URL_SCHEME,
+                                       std::move(server_creds)) {}
+
+  ~grpc_alts_server_security_connector() override = default;
+
+  void add_handshakers(
+      const grpc_channel_args* args, grpc_pollset_set* interested_parties,
+      grpc_core::HandshakeManager* handshake_manager) override {
+    tsi_handshaker* handshaker = nullptr;
+    const grpc_alts_server_credentials* creds =
+        static_cast<const grpc_alts_server_credentials*>(server_creds());
+    GPR_ASSERT(alts_tsi_handshaker_create(
+                   creds->options(), nullptr, creds->handshaker_service_url(),
+                   false, interested_parties, &handshaker) == TSI_OK);
+    handshake_manager->Add(
+        grpc_core::SecurityHandshakerCreate(handshaker, this, args));
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    alts_check_peer(peer, auth_context, on_peer_checked);
+  }
+
+  int cmp(const grpc_security_connector* other) const override {
+    return server_security_connector_cmp(
+        static_cast<const grpc_server_security_connector*>(other));
+  }
+};
+}  // namespace
+
+namespace grpc_core {
+namespace internal {
+grpc_core::RefCountedPtr<grpc_auth_context>
+grpc_alts_auth_context_from_tsi_peer(const tsi_peer* peer) {
+  if (peer == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to grpc_alts_auth_context_from_tsi_peer()");
+    return nullptr;
+  }
+  /* Validate certificate type. */
+  const tsi_peer_property* cert_type_prop =
+      tsi_peer_get_property_by_name(peer, TSI_CERTIFICATE_TYPE_PEER_PROPERTY);
+  if (cert_type_prop == nullptr ||
+      strncmp(cert_type_prop->value.data, TSI_ALTS_CERTIFICATE_TYPE,
+              cert_type_prop->value.length) != 0) {
+    gpr_log(GPR_ERROR, "Invalid or missing certificate type property.");
+    return nullptr;
+  }
+  /* Check if security level exists. */
+  const tsi_peer_property* security_level_prop =
+      tsi_peer_get_property_by_name(peer, TSI_SECURITY_LEVEL_PEER_PROPERTY);
+  if (security_level_prop == nullptr) {
+    gpr_log(GPR_ERROR, "Missing security level property.");
+    return nullptr;
+  }
+  /* Validate RPC protocol versions. */
+  const tsi_peer_property* rpc_versions_prop =
+      tsi_peer_get_property_by_name(peer, TSI_ALTS_RPC_VERSIONS);
+  if (rpc_versions_prop == nullptr) {
+    gpr_log(GPR_ERROR, "Missing rpc protocol versions property.");
+    return nullptr;
+  }
+  grpc_gcp_rpc_protocol_versions local_versions, peer_versions;
+  grpc_alts_set_rpc_protocol_versions(&local_versions);
+  grpc_slice slice = grpc_slice_from_copied_buffer(
+      rpc_versions_prop->value.data, rpc_versions_prop->value.length);
+  bool decode_result =
+      grpc_gcp_rpc_protocol_versions_decode(slice, &peer_versions);
+  grpc_slice_unref_internal(slice);
+  if (!decode_result) {
+    gpr_log(GPR_ERROR, "Invalid peer rpc protocol versions.");
+    return nullptr;
+  }
+  /* TODO: Pass highest common rpc protocol version to grpc caller. */
+  bool check_result = grpc_gcp_rpc_protocol_versions_check(
+      &local_versions, &peer_versions, nullptr);
+  if (!check_result) {
+    gpr_log(GPR_ERROR, "Mismatch of local and peer rpc protocol versions.");
+    return nullptr;
+  }
+  /* Validate ALTS Context. */
+  const tsi_peer_property* alts_context_prop =
+      tsi_peer_get_property_by_name(peer, TSI_ALTS_CONTEXT);
+  if (alts_context_prop == nullptr) {
+    gpr_log(GPR_ERROR, "Missing alts context property.");
+    return nullptr;
+  }
+  /* Create auth context. */
+  auto ctx = grpc_core::MakeRefCounted<grpc_auth_context>(nullptr);
+  grpc_auth_context_add_cstring_property(
+      ctx.get(), GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME,
+      GRPC_ALTS_TRANSPORT_SECURITY_TYPE);
+  size_t i = 0;
+  for (i = 0; i < peer->property_count; i++) {
+    const tsi_peer_property* tsi_prop = &peer->properties[i];
+    /* Add service account to auth context. */
+    if (strcmp(tsi_prop->name, TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY) == 0) {
+      grpc_auth_context_add_property(
+          ctx.get(), TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY,
+          tsi_prop->value.data, tsi_prop->value.length);
+      GPR_ASSERT(grpc_auth_context_set_peer_identity_property_name(
+                     ctx.get(), TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY) == 1);
+    }
+    /* Add alts context to auth context. */
+    if (strcmp(tsi_prop->name, TSI_ALTS_CONTEXT) == 0) {
+      grpc_auth_context_add_property(ctx.get(), TSI_ALTS_CONTEXT,
+                                     tsi_prop->value.data,
+                                     tsi_prop->value.length);
+    }
+    /* Add security level to auth context. */
+    if (strcmp(tsi_prop->name, TSI_SECURITY_LEVEL_PEER_PROPERTY) == 0) {
+      grpc_auth_context_add_property(
+          ctx.get(), GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME,
+          tsi_prop->value.data, tsi_prop->value.length);
+    }
+  }
+  if (!grpc_auth_context_peer_is_authenticated(ctx.get())) {
+    gpr_log(GPR_ERROR, "Invalid unauthenticated peer.");
+    ctx.reset(DEBUG_LOCATION, "test");
+    return nullptr;
+  }
+  return ctx;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_alts_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name) {
+  if (channel_creds == nullptr || target_name == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid arguments to grpc_alts_channel_security_connector_create()");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_alts_channel_security_connector>(
+      std::move(channel_creds), std::move(request_metadata_creds), target_name);
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_alts_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds) {
+  if (server_creds == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid arguments to grpc_alts_server_security_connector_create()");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_alts_server_security_connector>(
+      std::move(server_creds));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.h
new file mode 100644
index 0000000..10c3fe9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/alts/alts_security_connector.h	
@@ -0,0 +1,76 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+
+#define GRPC_ALTS_TRANSPORT_SECURITY_TYPE "alts"
+#define GRPC_ALTS_URL_SCHEME "https"
+
+/**
+ * This method creates an ALTS channel security connector.
+ *
+ * - channel_creds: channel credential instance.
+ * - request_metadata_creds: credential object which will be sent with each
+ *   request. This parameter can be nullptr.
+ * - target_name: the name of the endpoint that the channel is connecting to.
+ * - sc: address of ALTS channel security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_alts_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name);
+
+/**
+ * This method creates an ALTS server security connector.
+ *
+ * - server_creds: server credential instance.
+ * - sc: address of ALTS server security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_alts_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+/* Initializes rpc_versions. */
+void grpc_alts_set_rpc_protocol_versions(
+    grpc_gcp_rpc_protocol_versions* rpc_versions);
+
+namespace grpc_core {
+namespace internal {
+
+/* Exposed only for testing. */
+grpc_core::RefCountedPtr<grpc_auth_context>
+grpc_alts_auth_context_from_tsi_peer(const tsi_peer* peer);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_ALTS_ALTS_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.cc
new file mode 100644
index 0000000..7a81e68
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.cc	
@@ -0,0 +1,324 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/fake/fake_security_connector.h"
+
+#include <stdbool.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.h"
+#include "src/core/ext/filters/client_channel/xds/xds_channel_args.h"
+#include "src/core/ext/transport/chttp2/alpn/alpn.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/fake/fake_credentials.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+#include "src/core/tsi/fake_transport_security.h"
+
+namespace {
+class grpc_fake_channel_security_connector final
+    : public grpc_channel_security_connector {
+ public:
+  grpc_fake_channel_security_connector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target, const grpc_channel_args* args)
+      : grpc_channel_security_connector(GRPC_FAKE_SECURITY_URL_SCHEME,
+                                        std::move(channel_creds),
+                                        std::move(request_metadata_creds)),
+        target_(gpr_strdup(target)),
+        expected_targets_(
+            gpr_strdup(grpc_fake_transport_get_expected_targets(args))),
+        is_lb_channel_(
+            grpc_channel_args_find(args, GRPC_ARG_ADDRESS_IS_XDS_SERVER) !=
+                nullptr ||
+            grpc_channel_args_find(
+                args, GRPC_ARG_ADDRESS_IS_GRPCLB_LOAD_BALANCER) != nullptr) {
+    const grpc_arg* target_name_override_arg =
+        grpc_channel_args_find(args, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG);
+    if (target_name_override_arg != nullptr) {
+      target_name_override_ =
+          gpr_strdup(grpc_channel_arg_get_string(target_name_override_arg));
+    } else {
+      target_name_override_ = nullptr;
+    }
+  }
+
+  ~grpc_fake_channel_security_connector() override {
+    gpr_free(target_);
+    gpr_free(expected_targets_);
+    if (target_name_override_ != nullptr) gpr_free(target_name_override_);
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override;
+
+  int cmp(const grpc_security_connector* other_sc) const override {
+    auto* other =
+        reinterpret_cast<const grpc_fake_channel_security_connector*>(other_sc);
+    int c = channel_security_connector_cmp(other);
+    if (c != 0) return c;
+    c = strcmp(target_, other->target_);
+    if (c != 0) return c;
+    if (expected_targets_ == nullptr || other->expected_targets_ == nullptr) {
+      c = GPR_ICMP(expected_targets_, other->expected_targets_);
+    } else {
+      c = strcmp(expected_targets_, other->expected_targets_);
+    }
+    if (c != 0) return c;
+    return GPR_ICMP(is_lb_channel_, other->is_lb_channel_);
+  }
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* /*interested_parties*/,
+                       grpc_core::HandshakeManager* handshake_mgr) override {
+    handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(
+        tsi_create_fake_handshaker(/*is_client=*/true), this, args));
+  }
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* /*auth_context*/,
+                       grpc_closure* /*on_call_host_checked*/,
+                       grpc_error** /*error*/) override {
+    grpc_core::StringView authority_hostname;
+    grpc_core::StringView authority_ignored_port;
+    grpc_core::StringView target_hostname;
+    grpc_core::StringView target_ignored_port;
+    grpc_core::SplitHostPort(host, &authority_hostname,
+                             &authority_ignored_port);
+    grpc_core::SplitHostPort(target_, &target_hostname, &target_ignored_port);
+    if (target_name_override_ != nullptr) {
+      grpc_core::StringView fake_security_target_name_override_hostname;
+      grpc_core::StringView fake_security_target_name_override_ignored_port;
+      grpc_core::SplitHostPort(
+          target_name_override_, &fake_security_target_name_override_hostname,
+          &fake_security_target_name_override_ignored_port);
+      if (authority_hostname != fake_security_target_name_override_hostname) {
+        gpr_log(GPR_ERROR,
+                "Authority (host) '%s' != Fake Security Target override '%s'",
+                host.data(),
+                fake_security_target_name_override_hostname.data());
+        abort();
+      }
+    } else if (authority_hostname != target_hostname) {
+      gpr_log(GPR_ERROR, "Authority (host) '%s' != Target '%s'", host.data(),
+              target_);
+      abort();
+    }
+    return true;
+  }
+
+  void cancel_check_call_host(grpc_closure* /*on_call_host_checked*/,
+                              grpc_error* error) override {
+    GRPC_ERROR_UNREF(error);
+  }
+
+  char* target() const { return target_; }
+  char* expected_targets() const { return expected_targets_; }
+  bool is_lb_channel() const { return is_lb_channel_; }
+  char* target_name_override() const { return target_name_override_; }
+
+ private:
+  bool fake_check_target(const char* target_type, const char* target,
+                         const char* set_str) const {
+    GPR_ASSERT(target_type != nullptr);
+    GPR_ASSERT(target != nullptr);
+    char** set = nullptr;
+    size_t set_size = 0;
+    gpr_string_split(set_str, ",", &set, &set_size);
+    bool found = false;
+    for (size_t i = 0; i < set_size; ++i) {
+      if (set[i] != nullptr && strcmp(target, set[i]) == 0) found = true;
+    }
+    for (size_t i = 0; i < set_size; ++i) {
+      gpr_free(set[i]);
+    }
+    gpr_free(set);
+    return found;
+  }
+
+  void fake_secure_name_check() const {
+    if (expected_targets_ == nullptr) return;
+    char** lbs_and_backends = nullptr;
+    size_t lbs_and_backends_size = 0;
+    bool success = false;
+    gpr_string_split(expected_targets_, ";", &lbs_and_backends,
+                     &lbs_and_backends_size);
+    if (lbs_and_backends_size > 2 || lbs_and_backends_size == 0) {
+      gpr_log(GPR_ERROR, "Invalid expected targets arg value: '%s'",
+              expected_targets_);
+      goto done;
+    }
+    if (is_lb_channel_) {
+      if (lbs_and_backends_size != 2) {
+        gpr_log(GPR_ERROR,
+                "Invalid expected targets arg value: '%s'. Expectations for LB "
+                "channels must be of the form 'be1,be2,be3,...;lb1,lb2,...",
+                expected_targets_);
+        goto done;
+      }
+      if (!fake_check_target("LB", target_, lbs_and_backends[1])) {
+        gpr_log(GPR_ERROR, "LB target '%s' not found in expected set '%s'",
+                target_, lbs_and_backends[1]);
+        goto done;
+      }
+      success = true;
+    } else {
+      if (!fake_check_target("Backend", target_, lbs_and_backends[0])) {
+        gpr_log(GPR_ERROR, "Backend target '%s' not found in expected set '%s'",
+                target_, lbs_and_backends[0]);
+        goto done;
+      }
+      success = true;
+    }
+  done:
+    for (size_t i = 0; i < lbs_and_backends_size; ++i) {
+      gpr_free(lbs_and_backends[i]);
+    }
+    gpr_free(lbs_and_backends);
+    if (!success) abort();
+  }
+
+  char* target_;
+  char* expected_targets_;
+  bool is_lb_channel_;
+  char* target_name_override_;
+};
+
+static void fake_check_peer(
+    grpc_security_connector* /*sc*/, tsi_peer peer,
+    grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+    grpc_closure* on_peer_checked) {
+  const char* prop_name;
+  grpc_error* error = GRPC_ERROR_NONE;
+  *auth_context = nullptr;
+  if (peer.property_count != 2) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Fake peers should only have 2 properties.");
+    goto end;
+  }
+  prop_name = peer.properties[0].name;
+  if (prop_name == nullptr ||
+      strcmp(prop_name, TSI_CERTIFICATE_TYPE_PEER_PROPERTY)) {
+    char* msg;
+    gpr_asprintf(&msg, "Unexpected property in fake peer: %s.",
+                 prop_name == nullptr ? "<EMPTY>" : prop_name);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    goto end;
+  }
+  if (strncmp(peer.properties[0].value.data, TSI_FAKE_CERTIFICATE_TYPE,
+              peer.properties[0].value.length)) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Invalid value for cert type property.");
+    goto end;
+  }
+  prop_name = peer.properties[1].name;
+  if (prop_name == nullptr ||
+      strcmp(prop_name, TSI_SECURITY_LEVEL_PEER_PROPERTY) != 0) {
+    char* msg;
+    gpr_asprintf(&msg, "Unexpected property in fake peer: %s.",
+                 prop_name == nullptr ? "<EMPTY>" : prop_name);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    goto end;
+  }
+  if (strncmp(peer.properties[1].value.data, TSI_FAKE_SECURITY_LEVEL,
+              peer.properties[1].value.length) != 0) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Invalid value for security level property.");
+    goto end;
+  }
+
+  *auth_context = grpc_core::MakeRefCounted<grpc_auth_context>(nullptr);
+  grpc_auth_context_add_cstring_property(
+      auth_context->get(), GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME,
+      GRPC_FAKE_TRANSPORT_SECURITY_TYPE);
+  grpc_auth_context_add_cstring_property(
+      auth_context->get(), GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME,
+      TSI_FAKE_SECURITY_LEVEL);
+end:
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+  tsi_peer_destruct(&peer);
+}
+
+void grpc_fake_channel_security_connector::check_peer(
+    tsi_peer peer, grpc_endpoint* /*ep*/,
+    grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+    grpc_closure* on_peer_checked) {
+  fake_check_peer(this, peer, auth_context, on_peer_checked);
+  fake_secure_name_check();
+}
+
+class grpc_fake_server_security_connector
+    : public grpc_server_security_connector {
+ public:
+  grpc_fake_server_security_connector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+      : grpc_server_security_connector(GRPC_FAKE_SECURITY_URL_SCHEME,
+                                       std::move(server_creds)) {}
+  ~grpc_fake_server_security_connector() override = default;
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    fake_check_peer(this, peer, auth_context, on_peer_checked);
+  }
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* /*interested_parties*/,
+                       grpc_core::HandshakeManager* handshake_mgr) override {
+    handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(
+        tsi_create_fake_handshaker(/*=is_client*/ false), this, args));
+  }
+
+  int cmp(const grpc_security_connector* other) const override {
+    return server_security_connector_cmp(
+        static_cast<const grpc_server_security_connector*>(other));
+  }
+};
+}  // namespace
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_fake_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target, const grpc_channel_args* args) {
+  return grpc_core::MakeRefCounted<grpc_fake_channel_security_connector>(
+      std::move(channel_creds), std::move(request_metadata_creds), target,
+      args);
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_fake_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds) {
+  return grpc_core::MakeRefCounted<grpc_fake_server_security_connector>(
+      std::move(server_creds));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.h
new file mode 100644
index 0000000..344a234
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/fake/fake_security_connector.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+#define GRPC_FAKE_SECURITY_URL_SCHEME "http+fake_security"
+
+/* Creates a fake connector that emulates real channel security.  */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_fake_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target, const grpc_channel_args* args);
+
+/* Creates a fake connector that emulates real server security.  */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_fake_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_FAKE_FAKE_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots.h
new file mode 100644
index 0000000..5fdec15
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H
+
+namespace grpc_core {
+
+// Returns a slice containing roots from the OS trust store
+grpc_slice LoadSystemRootCerts();
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_fallback.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_fallback.cc
new file mode 100644
index 0000000..f04d0ed
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_fallback.cc	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/lib/security/security_connector/load_system_roots.h"
+
+#if !defined(GPR_LINUX) && !defined(GPR_ANDROID)
+
+namespace grpc_core {
+
+grpc_slice LoadSystemRootCerts() { return grpc_empty_slice(); }
+
+}  // namespace grpc_core
+
+#endif /* !(GPR_LINUX || GPR_ANDROID) */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.cc
new file mode 100644
index 0000000..e97773f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.cc	
@@ -0,0 +1,170 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/lib/security/security_connector/load_system_roots_linux.h"
+
+#if defined(GPR_LINUX) || defined(GPR_ANDROID)
+
+#include "src/core/lib/security/security_connector/load_system_roots.h"
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/gprpp/inlined_vector.h"
+#include "src/core/lib/iomgr/load_file.h"
+
+GPR_GLOBAL_CONFIG_DEFINE_STRING(grpc_system_ssl_roots_dir, "",
+                                "Custom directory to SSL Roots");
+
+namespace grpc_core {
+namespace {
+
+const char* kLinuxCertFiles[] = {
+    "/etc/ssl/certs/ca-certificates.crt", "/etc/pki/tls/certs/ca-bundle.crt",
+    "/etc/ssl/ca-bundle.pem", "/etc/pki/tls/cacert.pem",
+    "/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem"};
+const char* kLinuxCertDirectories[] = {
+    "/etc/ssl/certs", "/system/etc/security/cacerts", "/usr/local/share/certs",
+    "/etc/pki/tls/certs", "/etc/openssl/certs"};
+
+grpc_slice GetSystemRootCerts() {
+  grpc_slice valid_bundle_slice = grpc_empty_slice();
+  size_t num_cert_files_ = GPR_ARRAY_SIZE(kLinuxCertFiles);
+  for (size_t i = 0; i < num_cert_files_; i++) {
+    grpc_error* error =
+        grpc_load_file(kLinuxCertFiles[i], 1, &valid_bundle_slice);
+    if (error == GRPC_ERROR_NONE) {
+      return valid_bundle_slice;
+    } else {
+      GRPC_ERROR_UNREF(error);
+    }
+  }
+  return grpc_empty_slice();
+}
+
+}  // namespace
+
+void GetAbsoluteFilePath(const char* valid_file_dir,
+                         const char* file_entry_name, char* path_buffer) {
+  if (valid_file_dir != nullptr && file_entry_name != nullptr) {
+    int path_len = snprintf(path_buffer, MAXPATHLEN, "%s/%s", valid_file_dir,
+                            file_entry_name);
+    if (path_len == 0) {
+      gpr_log(GPR_ERROR, "failed to get absolute path for file: %s",
+              file_entry_name);
+    }
+  }
+}
+
+grpc_slice CreateRootCertsBundle(const char* certs_directory) {
+  grpc_slice bundle_slice = grpc_empty_slice();
+  if (certs_directory == nullptr) {
+    return bundle_slice;
+  }
+  DIR* ca_directory = opendir(certs_directory);
+  if (ca_directory == nullptr) {
+    return bundle_slice;
+  }
+  struct FileData {
+    char path[MAXPATHLEN];
+    off_t size;
+  };
+  InlinedVector<FileData, 2> roots_filenames;
+  size_t total_bundle_size = 0;
+  struct dirent* directory_entry;
+  while ((directory_entry = readdir(ca_directory)) != nullptr) {
+    struct stat dir_entry_stat;
+    const char* file_entry_name = directory_entry->d_name;
+    FileData file_data;
+    GetAbsoluteFilePath(certs_directory, file_entry_name, file_data.path);
+    int stat_return = stat(file_data.path, &dir_entry_stat);
+    if (stat_return == -1 || !S_ISREG(dir_entry_stat.st_mode)) {
+      // no subdirectories.
+      if (stat_return == -1) {
+        gpr_log(GPR_ERROR, "failed to get status for file: %s", file_data.path);
+      }
+      continue;
+    }
+    file_data.size = dir_entry_stat.st_size;
+    total_bundle_size += file_data.size;
+    roots_filenames.push_back(file_data);
+  }
+  closedir(ca_directory);
+  char* bundle_string = static_cast<char*>(gpr_zalloc(total_bundle_size + 1));
+  size_t bytes_read = 0;
+  for (size_t i = 0; i < roots_filenames.size(); i++) {
+    int file_descriptor = open(roots_filenames[i].path, O_RDONLY);
+    if (file_descriptor != -1) {
+      // Read file into bundle.
+      size_t cert_file_size = roots_filenames[i].size;
+      int read_ret =
+          read(file_descriptor, bundle_string + bytes_read, cert_file_size);
+      if (read_ret != -1) {
+        bytes_read += read_ret;
+      } else {
+        gpr_log(GPR_ERROR, "failed to read file: %s", roots_filenames[i].path);
+      }
+    }
+  }
+  bundle_slice = grpc_slice_new(bundle_string, bytes_read, gpr_free);
+  return bundle_slice;
+}
+
+grpc_slice LoadSystemRootCerts() {
+  grpc_slice result = grpc_empty_slice();
+  // Prioritize user-specified custom directory if flag is set.
+  grpc_core::UniquePtr<char> custom_dir =
+      GPR_GLOBAL_CONFIG_GET(grpc_system_ssl_roots_dir);
+  if (strlen(custom_dir.get()) > 0) {
+    result = CreateRootCertsBundle(custom_dir.get());
+  }
+  // If the custom directory is empty/invalid/not specified, fallback to
+  // distribution-specific directory.
+  if (GRPC_SLICE_IS_EMPTY(result)) {
+    result = GetSystemRootCerts();
+  }
+  if (GRPC_SLICE_IS_EMPTY(result)) {
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(kLinuxCertDirectories); i++) {
+      result = CreateRootCertsBundle(kLinuxCertDirectories[i]);
+      if (!GRPC_SLICE_IS_EMPTY(result)) {
+        break;
+      }
+    }
+  }
+  return result;
+}
+
+}  // namespace grpc_core
+
+#endif /* GPR_LINUX || GPR_ANDROID */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.h
new file mode 100644
index 0000000..12617df
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/load_system_roots_linux.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX
+
+namespace grpc_core {
+
+// Creates a bundle slice containing the contents of all certificate files in
+// a directory.
+// Returns such slice.
+// Exposed for testing purposes only.
+grpc_slice CreateRootCertsBundle(const char* certs_directory);
+
+// Gets the absolute file path needed to load a certificate file.
+// Populates path_buffer, which must be of size MAXPATHLEN.
+// Exposed for testing purposes only.
+void GetAbsoluteFilePath(const char* valid_file_dir,
+                         const char* file_entry_name, char* path_buffer);
+
+}  // namespace grpc_core
+
+#endif /* GPR_LINUX */
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOAD_SYSTEM_ROOTS_LINUX_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.cc
new file mode 100644
index 0000000..f2e4e0c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.cc	
@@ -0,0 +1,281 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/local/local_security_connector.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/security/credentials/local/local_credentials.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/tsi/local_transport_security.h"
+
+#define GRPC_UDS_URI_PATTERN "unix:"
+#define GRPC_LOCAL_TRANSPORT_SECURITY_TYPE "local"
+
+namespace {
+
+grpc_core::RefCountedPtr<grpc_auth_context> local_auth_context_create(
+    const tsi_peer* peer) {
+  /* Create auth context. */
+  grpc_core::RefCountedPtr<grpc_auth_context> ctx =
+      grpc_core::MakeRefCounted<grpc_auth_context>(nullptr);
+  grpc_auth_context_add_cstring_property(
+      ctx.get(), GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME,
+      GRPC_LOCAL_TRANSPORT_SECURITY_TYPE);
+  GPR_ASSERT(grpc_auth_context_set_peer_identity_property_name(
+                 ctx.get(), GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME) == 1);
+  GPR_ASSERT(peer->property_count == 1);
+  const tsi_peer_property* prop = &peer->properties[0];
+  GPR_ASSERT(prop != nullptr);
+  GPR_ASSERT(strcmp(prop->name, TSI_SECURITY_LEVEL_PEER_PROPERTY) == 0);
+  grpc_auth_context_add_property(ctx.get(),
+                                 GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME,
+                                 prop->value.data, prop->value.length);
+  return ctx;
+}
+
+void local_check_peer(tsi_peer peer, grpc_endpoint* ep,
+                      grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                      grpc_closure* on_peer_checked,
+                      grpc_local_connect_type type) {
+  int fd = grpc_endpoint_get_fd(ep);
+  grpc_resolved_address resolved_addr;
+  memset(&resolved_addr, 0, sizeof(resolved_addr));
+  resolved_addr.len = GRPC_MAX_SOCKADDR_SIZE;
+  bool is_endpoint_local = false;
+  if (getsockname(fd, reinterpret_cast<grpc_sockaddr*>(resolved_addr.addr),
+                  &resolved_addr.len) == 0) {
+    grpc_resolved_address addr_normalized;
+    grpc_resolved_address* addr =
+        grpc_sockaddr_is_v4mapped(&resolved_addr, &addr_normalized)
+            ? &addr_normalized
+            : &resolved_addr;
+    grpc_sockaddr* sock_addr = reinterpret_cast<grpc_sockaddr*>(&addr->addr);
+    // UDS
+    if (type == UDS && grpc_is_unix_socket(addr)) {
+      is_endpoint_local = true;
+      // IPV4
+    } else if (type == LOCAL_TCP && sock_addr->sa_family == GRPC_AF_INET) {
+      const grpc_sockaddr_in* addr4 =
+          reinterpret_cast<const grpc_sockaddr_in*>(sock_addr);
+      if (grpc_htonl(addr4->sin_addr.s_addr) == INADDR_LOOPBACK) {
+        is_endpoint_local = true;
+      }
+      // IPv6
+    } else if (type == LOCAL_TCP && sock_addr->sa_family == GRPC_AF_INET6) {
+      const grpc_sockaddr_in6* addr6 =
+          reinterpret_cast<const grpc_sockaddr_in6*>(addr);
+      if (memcmp(&addr6->sin6_addr, &in6addr_loopback,
+                 sizeof(in6addr_loopback)) == 0) {
+        is_endpoint_local = true;
+      }
+    }
+  }
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (!is_endpoint_local) {
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Endpoint is neither UDS or TCP loopback address.");
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+    return;
+  }
+  // Add TSI_SECURITY_LEVEL_PEER_PROPERTY type peer property.
+  size_t new_property_count = peer.property_count + 1;
+  tsi_peer_property* new_properties = static_cast<tsi_peer_property*>(
+      gpr_zalloc(sizeof(*new_properties) * new_property_count));
+  for (size_t i = 0; i < peer.property_count; i++) {
+    new_properties[i] = peer.properties[i];
+  }
+  if (peer.properties != nullptr) gpr_free(peer.properties);
+  peer.properties = new_properties;
+  // TODO(yihuazhang): Set security level of local TCP to TSI_SECURITY_NONE.
+  const char* security_level =
+      tsi_security_level_to_string(TSI_PRIVACY_AND_INTEGRITY);
+  tsi_result result = tsi_construct_string_peer_property_from_cstring(
+      TSI_SECURITY_LEVEL_PEER_PROPERTY, security_level,
+      &peer.properties[peer.property_count]);
+  if (result != TSI_OK) return;
+  peer.property_count++;
+  /* Create an auth context which is necessary to pass the santiy check in
+   * {client, server}_auth_filter that verifies if the peer's auth context is
+   * obtained during handshakes. The auth context is only checked for its
+   * existence and not actually used.
+   */
+  *auth_context = local_auth_context_create(&peer);
+  tsi_peer_destruct(&peer);
+  error = *auth_context != nullptr ? GRPC_ERROR_NONE
+                                   : GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                         "Could not create local auth context");
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+}
+
+class grpc_local_channel_security_connector final
+    : public grpc_channel_security_connector {
+ public:
+  grpc_local_channel_security_connector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name)
+      : grpc_channel_security_connector(nullptr, std::move(channel_creds),
+                                        std::move(request_metadata_creds)),
+        target_name_(gpr_strdup(target_name)) {}
+
+  ~grpc_local_channel_security_connector() override { gpr_free(target_name_); }
+
+  void add_handshakers(
+      const grpc_channel_args* args, grpc_pollset_set* /*interested_parties*/,
+      grpc_core::HandshakeManager* handshake_manager) override {
+    tsi_handshaker* handshaker = nullptr;
+    GPR_ASSERT(local_tsi_handshaker_create(true /* is_client */, &handshaker) ==
+               TSI_OK);
+    handshake_manager->Add(
+        grpc_core::SecurityHandshakerCreate(handshaker, this, args));
+  }
+
+  int cmp(const grpc_security_connector* other_sc) const override {
+    auto* other =
+        reinterpret_cast<const grpc_local_channel_security_connector*>(
+            other_sc);
+    int c = channel_security_connector_cmp(other);
+    if (c != 0) return c;
+    return strcmp(target_name_, other->target_name_);
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    grpc_local_credentials* creds =
+        reinterpret_cast<grpc_local_credentials*>(mutable_channel_creds());
+    local_check_peer(peer, ep, auth_context, on_peer_checked,
+                     creds->connect_type());
+  }
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* /*auth_context*/,
+                       grpc_closure* /*on_call_host_checked*/,
+                       grpc_error** error) override {
+    if (host.empty() || host != target_name_) {
+      *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "local call host does not match target name");
+    }
+    return true;
+  }
+
+  void cancel_check_call_host(grpc_closure* /*on_call_host_checked*/,
+                              grpc_error* error) override {
+    GRPC_ERROR_UNREF(error);
+  }
+
+  const char* target_name() const { return target_name_; }
+
+ private:
+  char* target_name_;
+};
+
+class grpc_local_server_security_connector final
+    : public grpc_server_security_connector {
+ public:
+  grpc_local_server_security_connector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+      : grpc_server_security_connector(nullptr, std::move(server_creds)) {}
+  ~grpc_local_server_security_connector() override = default;
+
+  void add_handshakers(
+      const grpc_channel_args* args, grpc_pollset_set* /*interested_parties*/,
+      grpc_core::HandshakeManager* handshake_manager) override {
+    tsi_handshaker* handshaker = nullptr;
+    GPR_ASSERT(local_tsi_handshaker_create(false /* is_client */,
+                                           &handshaker) == TSI_OK);
+    handshake_manager->Add(
+        grpc_core::SecurityHandshakerCreate(handshaker, this, args));
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    grpc_local_server_credentials* creds =
+        static_cast<grpc_local_server_credentials*>(mutable_server_creds());
+    local_check_peer(peer, ep, auth_context, on_peer_checked,
+                     creds->connect_type());
+  }
+
+  int cmp(const grpc_security_connector* other) const override {
+    return server_security_connector_cmp(
+        static_cast<const grpc_server_security_connector*>(other));
+  }
+};
+}  // namespace
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_local_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_channel_args* args, const char* target_name) {
+  if (channel_creds == nullptr || target_name == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid arguments to grpc_local_channel_security_connector_create()");
+    return nullptr;
+  }
+  // Perform sanity check on UDS address. For TCP local connection, the check
+  // will be done during check_peer procedure.
+  grpc_local_credentials* creds =
+      static_cast<grpc_local_credentials*>(channel_creds.get());
+  const grpc_arg* server_uri_arg =
+      grpc_channel_args_find(args, GRPC_ARG_SERVER_URI);
+  const char* server_uri_str = grpc_channel_arg_get_string(server_uri_arg);
+  if (creds->connect_type() == UDS &&
+      strncmp(GRPC_UDS_URI_PATTERN, server_uri_str,
+              strlen(GRPC_UDS_URI_PATTERN)) != 0) {
+    gpr_log(GPR_ERROR,
+            "Invalid UDS target name to "
+            "grpc_local_channel_security_connector_create()");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_local_channel_security_connector>(
+      channel_creds, request_metadata_creds, target_name);
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_local_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds) {
+  if (server_creds == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid arguments to grpc_local_server_security_connector_create()");
+    return nullptr;
+  }
+  return grpc_core::MakeRefCounted<grpc_local_server_security_connector>(
+      std::move(server_creds));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.h
new file mode 100644
index 0000000..6eee0ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/local/local_security_connector.h	
@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/context/security_context.h"
+
+/**
+ * This method creates a local channel security connector.
+ *
+ * - channel_creds: channel credential instance.
+ * - request_metadata_creds: credential object which will be sent with each
+ *   request. This parameter can be nullptr.
+ * - target_name: the name of the endpoint that the channel is connecting to.
+ * - args: channel args passed from the caller.
+ * - sc: address of local channel security connector instance to be returned
+ *   from the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_local_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_channel_args* args, const char* target_name);
+
+/**
+ * This method creates a local server security connector.
+ *
+ * - server_creds: server credential instance.
+ * - sc: address of local server security connector instance to be returned from
+ *   the method.
+ *
+ * It returns nullptr on failure.
+ */
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_local_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_LOCAL_LOCAL_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.cc
new file mode 100644
index 0000000..3d9b077
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.cc	
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/alpn/alpn.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/security_connector/load_system_roots.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_security_connector_refcount(
+    false, "security_connector_refcount");
+
+grpc_server_security_connector::grpc_server_security_connector(
+    const char* url_scheme,
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+    : grpc_security_connector(url_scheme),
+      server_creds_(std::move(server_creds)) {}
+
+grpc_channel_security_connector::grpc_channel_security_connector(
+    const char* url_scheme,
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds)
+    : grpc_security_connector(url_scheme),
+      channel_creds_(std::move(channel_creds)),
+      request_metadata_creds_(std::move(request_metadata_creds)) {}
+
+grpc_channel_security_connector::~grpc_channel_security_connector() {}
+
+int grpc_security_connector_cmp(const grpc_security_connector* sc,
+                                const grpc_security_connector* other) {
+  if (sc == nullptr || other == nullptr) return GPR_ICMP(sc, other);
+  return sc->cmp(other);
+}
+
+int grpc_channel_security_connector::channel_security_connector_cmp(
+    const grpc_channel_security_connector* other) const {
+  const grpc_channel_security_connector* other_sc =
+      static_cast<const grpc_channel_security_connector*>(other);
+  GPR_ASSERT(channel_creds() != nullptr);
+  GPR_ASSERT(other_sc->channel_creds() != nullptr);
+  int c = GPR_ICMP(channel_creds(), other_sc->channel_creds());
+  if (c != 0) return c;
+  return GPR_ICMP(request_metadata_creds(), other_sc->request_metadata_creds());
+}
+
+int grpc_server_security_connector::server_security_connector_cmp(
+    const grpc_server_security_connector* other) const {
+  const grpc_server_security_connector* other_sc =
+      static_cast<const grpc_server_security_connector*>(other);
+  GPR_ASSERT(server_creds() != nullptr);
+  GPR_ASSERT(other_sc->server_creds() != nullptr);
+  return GPR_ICMP(server_creds(), other_sc->server_creds());
+}
+
+static void connector_arg_destroy(void* p) {
+  static_cast<grpc_security_connector*>(p)->Unref(DEBUG_LOCATION,
+                                                  "connector_arg_destroy");
+}
+
+static void* connector_arg_copy(void* p) {
+  return static_cast<grpc_security_connector*>(p)
+      ->Ref(DEBUG_LOCATION, "connector_arg_copy")
+      .release();
+}
+
+static int connector_cmp(void* a, void* b) {
+  return static_cast<grpc_security_connector*>(a)->cmp(
+      static_cast<grpc_security_connector*>(b));
+}
+
+static const grpc_arg_pointer_vtable connector_arg_vtable = {
+    connector_arg_copy, connector_arg_destroy, connector_cmp};
+
+grpc_arg grpc_security_connector_to_arg(grpc_security_connector* sc) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_SECURITY_CONNECTOR, sc,
+                                         &connector_arg_vtable);
+}
+
+grpc_security_connector* grpc_security_connector_from_arg(const grpc_arg* arg) {
+  if (strcmp(arg->key, GRPC_ARG_SECURITY_CONNECTOR)) return nullptr;
+  if (arg->type != GRPC_ARG_POINTER) {
+    gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type,
+            GRPC_ARG_SECURITY_CONNECTOR);
+    return nullptr;
+  }
+  return static_cast<grpc_security_connector*>(arg->value.pointer.p);
+}
+
+grpc_security_connector* grpc_security_connector_find_in_args(
+    const grpc_channel_args* args) {
+  size_t i;
+  if (args == nullptr) return nullptr;
+  for (i = 0; i < args->num_args; i++) {
+    grpc_security_connector* sc =
+        grpc_security_connector_from_arg(&args->args[i]);
+    if (sc != nullptr) return sc;
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.h
new file mode 100644
index 0000000..32033ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/security_connector.h	
@@ -0,0 +1,176 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_security_connector_refcount;
+
+typedef enum { GRPC_SECURITY_OK = 0, GRPC_SECURITY_ERROR } grpc_security_status;
+
+/* --- security_connector object. ---
+
+    A security connector object represents away to configure the underlying
+    transport security mechanism and check the resulting trusted peer.  */
+
+#define GRPC_ARG_SECURITY_CONNECTOR "grpc.security_connector"
+
+class grpc_security_connector
+    : public grpc_core::RefCounted<grpc_security_connector> {
+ public:
+  explicit grpc_security_connector(const char* url_scheme)
+      : grpc_core::RefCounted<grpc_security_connector>(
+            &grpc_trace_security_connector_refcount),
+        url_scheme_(url_scheme) {}
+  virtual ~grpc_security_connector() = default;
+
+  /* Check the peer. Callee takes ownership of the peer object.
+     When done, sets *auth_context and invokes on_peer_checked. */
+  virtual void check_peer(
+      tsi_peer peer, grpc_endpoint* ep,
+      grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+      grpc_closure* on_peer_checked) = 0;
+
+  /* Compares two security connectors. */
+  virtual int cmp(const grpc_security_connector* other) const = 0;
+
+  const char* url_scheme() const { return url_scheme_; }
+
+ private:
+  const char* url_scheme_;
+};
+
+/* Util to encapsulate the connector in a channel arg. */
+grpc_arg grpc_security_connector_to_arg(grpc_security_connector* sc);
+
+/* Util to get the connector from a channel arg. */
+grpc_security_connector* grpc_security_connector_from_arg(const grpc_arg* arg);
+
+/* Util to find the connector from channel args. */
+grpc_security_connector* grpc_security_connector_find_in_args(
+    const grpc_channel_args* args);
+
+/* --- channel_security_connector object. ---
+
+    A channel security connector object represents a way to configure the
+    underlying transport security mechanism on the client side.  */
+
+class grpc_channel_security_connector : public grpc_security_connector {
+ public:
+  grpc_channel_security_connector(
+      const char* url_scheme,
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds
+      /*,
+      grpc_channel_args* channel_args = nullptr*/);
+  ~grpc_channel_security_connector() override;
+
+  /// Checks that the host that will be set for a call is acceptable.
+  /// Returns true if completed synchronously, in which case \a error will
+  /// be set to indicate the result.  Otherwise, \a on_call_host_checked
+  /// will be invoked when complete.
+  virtual bool check_call_host(grpc_core::StringView host,
+                               grpc_auth_context* auth_context,
+                               grpc_closure* on_call_host_checked,
+                               grpc_error** error) = 0;
+  /// Cancels a pending asynchronous call to
+  /// grpc_channel_security_connector_check_call_host() with
+  /// \a on_call_host_checked as its callback.
+  virtual void cancel_check_call_host(grpc_closure* on_call_host_checked,
+                                      grpc_error* error) = 0;
+  /// Registers handshakers with \a handshake_mgr.
+  virtual void add_handshakers(const grpc_channel_args* args,
+                               grpc_pollset_set* interested_parties,
+                               grpc_core::HandshakeManager* handshake_mgr) = 0;
+
+  const grpc_channel_credentials* channel_creds() const {
+    return channel_creds_.get();
+  }
+  grpc_channel_credentials* mutable_channel_creds() {
+    return channel_creds_.get();
+  }
+  const grpc_call_credentials* request_metadata_creds() const {
+    return request_metadata_creds_.get();
+  }
+  grpc_call_credentials* mutable_request_metadata_creds() {
+    return request_metadata_creds_.get();
+  }
+
+ protected:
+  // Helper methods to be used in subclasses.
+  int channel_security_connector_cmp(
+      const grpc_channel_security_connector* other) const;
+
+  // grpc_channel_args* channel_args() const { return channel_args_.get(); }
+  //// Should be called as soon as the channel args are not needed to reduce
+  //// memory usage.
+  // void clear_channel_arg() { channel_args_.reset(); }
+
+ private:
+  grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds_;
+  grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds_;
+  std::unique_ptr<grpc_channel_args> channel_args_;
+};
+
+/* --- server_security_connector object. ---
+
+    A server security connector object represents a way to configure the
+    underlying transport security mechanism on the server side.  */
+
+class grpc_server_security_connector : public grpc_security_connector {
+ public:
+  grpc_server_security_connector(
+      const char* url_scheme,
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+  ~grpc_server_security_connector() override = default;
+
+  virtual void add_handshakers(const grpc_channel_args* args,
+                               grpc_pollset_set* interested_parties,
+                               grpc_core::HandshakeManager* handshake_mgr) = 0;
+
+  const grpc_server_credentials* server_creds() const {
+    return server_creds_.get();
+  }
+  grpc_server_credentials* mutable_server_creds() {
+    return server_creds_.get();
+  }
+
+ protected:
+  // Helper methods to be used in subclasses.
+  int server_security_connector_cmp(
+      const grpc_server_security_connector* other) const;
+
+ private:
+  grpc_core::RefCountedPtr<grpc_server_credentials> server_creds_;
+};
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SECURITY_CONNECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.cc
new file mode 100644
index 0000000..47fdf3f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.cc	
@@ -0,0 +1,444 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/ssl/ssl_security_connector.h"
+
+#include <stdbool.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/alpn/alpn.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/ssl/ssl_credentials.h"
+#include "src/core/lib/security/security_connector/load_system_roots.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+
+namespace {
+grpc_error* ssl_check_peer(
+    const char* peer_name, const tsi_peer* peer,
+    grpc_core::RefCountedPtr<grpc_auth_context>* auth_context) {
+  grpc_error* error = grpc_ssl_check_alpn(peer);
+  if (error != GRPC_ERROR_NONE) {
+    return error;
+  }
+  /* Check the peer name if specified. */
+  if (peer_name != nullptr && !grpc_ssl_host_matches_name(peer, peer_name)) {
+    char* msg;
+    gpr_asprintf(&msg, "Peer name %s is not in peer certificate", peer_name);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return error;
+  }
+  *auth_context =
+      grpc_ssl_peer_to_auth_context(peer, GRPC_SSL_TRANSPORT_SECURITY_TYPE);
+  return GRPC_ERROR_NONE;
+}
+
+class grpc_ssl_channel_security_connector final
+    : public grpc_channel_security_connector {
+ public:
+  grpc_ssl_channel_security_connector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const grpc_ssl_config* config, const char* target_name,
+      const char* overridden_target_name)
+      : grpc_channel_security_connector(GRPC_SSL_URL_SCHEME,
+                                        std::move(channel_creds),
+                                        std::move(request_metadata_creds)),
+        overridden_target_name_(overridden_target_name == nullptr
+                                    ? nullptr
+                                    : gpr_strdup(overridden_target_name)),
+        verify_options_(&config->verify_options) {
+    grpc_core::StringView host;
+    grpc_core::StringView port;
+    grpc_core::SplitHostPort(target_name, &host, &port);
+    target_name_ = grpc_core::StringViewToCString(host);
+  }
+
+  ~grpc_ssl_channel_security_connector() override {
+    tsi_ssl_client_handshaker_factory_unref(client_handshaker_factory_);
+  }
+
+  grpc_security_status InitializeHandshakerFactory(
+      const grpc_ssl_config* config, const char* pem_root_certs,
+      const tsi_ssl_root_certs_store* root_store,
+      tsi_ssl_session_cache* ssl_session_cache) {
+    bool has_key_cert_pair =
+        config->pem_key_cert_pair != nullptr &&
+        config->pem_key_cert_pair->private_key != nullptr &&
+        config->pem_key_cert_pair->cert_chain != nullptr;
+    tsi_ssl_client_handshaker_options options;
+    GPR_DEBUG_ASSERT(pem_root_certs != nullptr);
+    options.pem_root_certs = pem_root_certs;
+    options.root_store = root_store;
+    options.alpn_protocols =
+        grpc_fill_alpn_protocol_strings(&options.num_alpn_protocols);
+    if (has_key_cert_pair) {
+      options.pem_key_cert_pair = config->pem_key_cert_pair;
+    }
+    options.cipher_suites = grpc_get_ssl_cipher_suites();
+    options.session_cache = ssl_session_cache;
+    const tsi_result result =
+        tsi_create_ssl_client_handshaker_factory_with_options(
+            &options, &client_handshaker_factory_);
+    gpr_free((void*)options.alpn_protocols);
+    if (result != TSI_OK) {
+      gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+              tsi_result_to_string(result));
+      return GRPC_SECURITY_ERROR;
+    }
+    return GRPC_SECURITY_OK;
+  }
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* /*interested_parties*/,
+                       grpc_core::HandshakeManager* handshake_mgr) override {
+    // Instantiate TSI handshaker.
+    tsi_handshaker* tsi_hs = nullptr;
+    tsi_result result = tsi_ssl_client_handshaker_factory_create_handshaker(
+        client_handshaker_factory_,
+        overridden_target_name_ != nullptr ? overridden_target_name_.get()
+                                           : target_name_.get(),
+        &tsi_hs);
+    if (result != TSI_OK) {
+      gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+              tsi_result_to_string(result));
+      return;
+    }
+    // Create handshakers.
+    handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(tsi_hs, this, args));
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    const char* target_name = overridden_target_name_ != nullptr
+                                  ? overridden_target_name_.get()
+                                  : target_name_.get();
+    grpc_error* error = ssl_check_peer(target_name, &peer, auth_context);
+    if (error == GRPC_ERROR_NONE &&
+        verify_options_->verify_peer_callback != nullptr) {
+      const tsi_peer_property* p =
+          tsi_peer_get_property_by_name(&peer, TSI_X509_PEM_CERT_PROPERTY);
+      if (p == nullptr) {
+        error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "Cannot check peer: missing pem cert property.");
+      } else {
+        char* peer_pem = static_cast<char*>(gpr_malloc(p->value.length + 1));
+        memcpy(peer_pem, p->value.data, p->value.length);
+        peer_pem[p->value.length] = '\0';
+        int callback_status = verify_options_->verify_peer_callback(
+            target_name, peer_pem,
+            verify_options_->verify_peer_callback_userdata);
+        gpr_free(peer_pem);
+        if (callback_status) {
+          char* msg;
+          gpr_asprintf(&msg, "Verify peer callback returned a failure (%d)",
+                       callback_status);
+          error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+          gpr_free(msg);
+        }
+      }
+    }
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+    tsi_peer_destruct(&peer);
+  }
+
+  int cmp(const grpc_security_connector* other_sc) const override {
+    auto* other =
+        reinterpret_cast<const grpc_ssl_channel_security_connector*>(other_sc);
+    int c = channel_security_connector_cmp(other);
+    if (c != 0) return c;
+    c = strcmp(target_name_.get(), other->target_name_.get());
+    if (c != 0) return c;
+    return (overridden_target_name_ == nullptr ||
+            other->overridden_target_name_ == nullptr)
+               ? GPR_ICMP(overridden_target_name_.get(),
+                          other->overridden_target_name_.get())
+               : strcmp(overridden_target_name_.get(),
+                        other->overridden_target_name_.get());
+  }
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* auth_context,
+                       grpc_closure* /*on_call_host_checked*/,
+                       grpc_error** error) override {
+    return grpc_ssl_check_call_host(host, target_name_.get(),
+                                    overridden_target_name_.get(), auth_context,
+                                    error);
+  }
+
+  void cancel_check_call_host(grpc_closure* /*on_call_host_checked*/,
+                              grpc_error* error) override {
+    GRPC_ERROR_UNREF(error);
+  }
+
+ private:
+  tsi_ssl_client_handshaker_factory* client_handshaker_factory_;
+  grpc_core::UniquePtr<char> target_name_;
+  grpc_core::UniquePtr<char> overridden_target_name_;
+  const verify_peer_options* verify_options_;
+};
+
+class grpc_ssl_server_security_connector
+    : public grpc_server_security_connector {
+ public:
+  grpc_ssl_server_security_connector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+      : grpc_server_security_connector(GRPC_SSL_URL_SCHEME,
+                                       std::move(server_creds)) {}
+
+  ~grpc_ssl_server_security_connector() override {
+    tsi_ssl_server_handshaker_factory_unref(server_handshaker_factory_);
+  }
+
+  bool has_cert_config_fetcher() const {
+    return static_cast<const grpc_ssl_server_credentials*>(server_creds())
+        ->has_cert_config_fetcher();
+  }
+
+  const tsi_ssl_server_handshaker_factory* server_handshaker_factory() const {
+    return server_handshaker_factory_;
+  }
+
+  grpc_security_status InitializeHandshakerFactory() {
+    if (has_cert_config_fetcher()) {
+      // Load initial credentials from certificate_config_fetcher:
+      if (!try_fetch_ssl_server_credentials()) {
+        gpr_log(GPR_ERROR,
+                "Failed loading SSL server credentials from fetcher.");
+        return GRPC_SECURITY_ERROR;
+      }
+    } else {
+      auto* server_credentials =
+          static_cast<const grpc_ssl_server_credentials*>(server_creds());
+      size_t num_alpn_protocols = 0;
+      const char** alpn_protocol_strings =
+          grpc_fill_alpn_protocol_strings(&num_alpn_protocols);
+      tsi_ssl_server_handshaker_options options;
+      options.pem_key_cert_pairs =
+          server_credentials->config().pem_key_cert_pairs;
+      options.num_key_cert_pairs =
+          server_credentials->config().num_key_cert_pairs;
+      options.pem_client_root_certs =
+          server_credentials->config().pem_root_certs;
+      options.client_certificate_request =
+          grpc_get_tsi_client_certificate_request_type(
+              server_credentials->config().client_certificate_request);
+      options.cipher_suites = grpc_get_ssl_cipher_suites();
+      options.alpn_protocols = alpn_protocol_strings;
+      options.num_alpn_protocols = static_cast<uint16_t>(num_alpn_protocols);
+      const tsi_result result =
+          tsi_create_ssl_server_handshaker_factory_with_options(
+              &options, &server_handshaker_factory_);
+      gpr_free((void*)alpn_protocol_strings);
+      if (result != TSI_OK) {
+        gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+                tsi_result_to_string(result));
+        return GRPC_SECURITY_ERROR;
+      }
+    }
+    return GRPC_SECURITY_OK;
+  }
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* /*interested_parties*/,
+                       grpc_core::HandshakeManager* handshake_mgr) override {
+    // Instantiate TSI handshaker.
+    try_fetch_ssl_server_credentials();
+    tsi_handshaker* tsi_hs = nullptr;
+    tsi_result result = tsi_ssl_server_handshaker_factory_create_handshaker(
+        server_handshaker_factory_, &tsi_hs);
+    if (result != TSI_OK) {
+      gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+              tsi_result_to_string(result));
+      return;
+    }
+    // Create handshakers.
+    handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(tsi_hs, this, args));
+  }
+
+  void check_peer(tsi_peer peer, grpc_endpoint* /*ep*/,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override {
+    grpc_error* error = ssl_check_peer(nullptr, &peer, auth_context);
+    tsi_peer_destruct(&peer);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+  }
+
+  int cmp(const grpc_security_connector* other) const override {
+    return server_security_connector_cmp(
+        static_cast<const grpc_server_security_connector*>(other));
+  }
+
+ private:
+  /* Attempts to fetch the server certificate config if a callback is available.
+   * Current certificate config will continue to be used if the callback returns
+   * an error. Returns true if new credentials were successfully loaded. */
+  bool try_fetch_ssl_server_credentials() {
+    grpc_ssl_server_certificate_config* certificate_config = nullptr;
+    bool status;
+    if (!has_cert_config_fetcher()) return false;
+
+    grpc_ssl_server_credentials* server_creds =
+        static_cast<grpc_ssl_server_credentials*>(this->mutable_server_creds());
+    grpc_ssl_certificate_config_reload_status cb_result =
+        server_creds->FetchCertConfig(&certificate_config);
+    if (cb_result == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED) {
+      gpr_log(GPR_DEBUG, "No change in SSL server credentials.");
+      status = false;
+    } else if (cb_result == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_NEW) {
+      status = try_replace_server_handshaker_factory(certificate_config);
+    } else {
+      // Log error, continue using previously-loaded credentials.
+      gpr_log(GPR_ERROR,
+              "Failed fetching new server credentials, continuing to "
+              "use previously-loaded credentials.");
+      status = false;
+    }
+
+    if (certificate_config != nullptr) {
+      grpc_ssl_server_certificate_config_destroy(certificate_config);
+    }
+    return status;
+  }
+
+  /* Attempts to replace the server_handshaker_factory with a new factory using
+   * the provided grpc_ssl_server_certificate_config. Should new factory
+   * creation fail, the existing factory will not be replaced. Returns true on
+   * success (new factory created). */
+  bool try_replace_server_handshaker_factory(
+      const grpc_ssl_server_certificate_config* config) {
+    if (config == nullptr) {
+      gpr_log(GPR_ERROR,
+              "Server certificate config callback returned invalid (NULL) "
+              "config.");
+      return false;
+    }
+    gpr_log(GPR_DEBUG, "Using new server certificate config (%p).", config);
+
+    size_t num_alpn_protocols = 0;
+    const char** alpn_protocol_strings =
+        grpc_fill_alpn_protocol_strings(&num_alpn_protocols);
+    tsi_ssl_server_handshaker_factory* new_handshaker_factory = nullptr;
+    const grpc_ssl_server_credentials* server_creds =
+        static_cast<const grpc_ssl_server_credentials*>(this->server_creds());
+    GPR_DEBUG_ASSERT(config->pem_root_certs != nullptr);
+    tsi_ssl_server_handshaker_options options;
+    options.pem_key_cert_pairs = grpc_convert_grpc_to_tsi_cert_pairs(
+        config->pem_key_cert_pairs, config->num_key_cert_pairs);
+    options.num_key_cert_pairs = config->num_key_cert_pairs;
+    options.pem_client_root_certs = config->pem_root_certs;
+    options.client_certificate_request =
+        grpc_get_tsi_client_certificate_request_type(
+            server_creds->config().client_certificate_request);
+    options.cipher_suites = grpc_get_ssl_cipher_suites();
+    options.alpn_protocols = alpn_protocol_strings;
+    options.num_alpn_protocols = static_cast<uint16_t>(num_alpn_protocols);
+    tsi_result result = tsi_create_ssl_server_handshaker_factory_with_options(
+        &options, &new_handshaker_factory);
+    grpc_tsi_ssl_pem_key_cert_pairs_destroy(
+        const_cast<tsi_ssl_pem_key_cert_pair*>(options.pem_key_cert_pairs),
+        options.num_key_cert_pairs);
+    gpr_free((void*)alpn_protocol_strings);
+
+    if (result != TSI_OK) {
+      gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+              tsi_result_to_string(result));
+      return false;
+    }
+    set_server_handshaker_factory(new_handshaker_factory);
+    return true;
+  }
+
+  void set_server_handshaker_factory(
+      tsi_ssl_server_handshaker_factory* new_factory) {
+    if (server_handshaker_factory_) {
+      tsi_ssl_server_handshaker_factory_unref(server_handshaker_factory_);
+    }
+    server_handshaker_factory_ = new_factory;
+  }
+
+  tsi_ssl_server_handshaker_factory* server_handshaker_factory_ = nullptr;
+};
+}  // namespace
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_ssl_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_ssl_config* config, const char* target_name,
+    const char* overridden_target_name,
+    tsi_ssl_session_cache* ssl_session_cache) {
+  if (config == nullptr || target_name == nullptr) {
+    gpr_log(GPR_ERROR, "An ssl channel needs a config and a target name.");
+    return nullptr;
+  }
+
+  const char* pem_root_certs;
+  const tsi_ssl_root_certs_store* root_store;
+  if (config->pem_root_certs == nullptr) {
+    // Use default root certificates.
+    pem_root_certs = grpc_core::DefaultSslRootStore::GetPemRootCerts();
+    if (pem_root_certs == nullptr) {
+      gpr_log(GPR_ERROR, "Could not get default pem root certs.");
+      return nullptr;
+    }
+    root_store = grpc_core::DefaultSslRootStore::GetRootStore();
+  } else {
+    pem_root_certs = config->pem_root_certs;
+    root_store = nullptr;
+  }
+
+  grpc_core::RefCountedPtr<grpc_ssl_channel_security_connector> c =
+      grpc_core::MakeRefCounted<grpc_ssl_channel_security_connector>(
+          std::move(channel_creds), std::move(request_metadata_creds), config,
+          target_name, overridden_target_name);
+  const grpc_security_status result = c->InitializeHandshakerFactory(
+      config, pem_root_certs, root_store, ssl_session_cache);
+  if (result != GRPC_SECURITY_OK) {
+    return nullptr;
+  }
+  return c;
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_ssl_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_credentials) {
+  GPR_ASSERT(server_credentials != nullptr);
+  grpc_core::RefCountedPtr<grpc_ssl_server_security_connector> c =
+      grpc_core::MakeRefCounted<grpc_ssl_server_security_connector>(
+          std::move(server_credentials));
+  const grpc_security_status retval = c->InitializeHandshakerFactory();
+  if (retval != GRPC_SECURITY_OK) {
+    return nullptr;
+  }
+  return c;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.h
new file mode 100644
index 0000000..70e26e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl/ssl_security_connector.h	
@@ -0,0 +1,79 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+typedef struct {
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pair;
+  char* pem_root_certs;
+  verify_peer_options verify_options;
+} grpc_ssl_config;
+
+/* Creates an SSL channel_security_connector.
+   - request_metadata_creds is the credentials object which metadata
+     will be sent with each request. This parameter can be NULL.
+   - config is the SSL config to be used for the SSL channel establishment.
+   - is_client should be 0 for a server or a non-0 value for a client.
+   - secure_peer_name is the secure peer name that should be checked in
+     grpc_channel_security_connector_check_peer. This parameter may be NULL in
+     which case the peer name will not be checked. Note that if this parameter
+     is not NULL, then, pem_root_certs should not be NULL either.
+   - sc is a pointer on the connector to be created.
+  This function returns GRPC_SECURITY_OK in case of success or a
+  specific error code otherwise.
+*/
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+grpc_ssl_channel_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const grpc_ssl_config* config, const char* target_name,
+    const char* overridden_target_name,
+    tsi_ssl_session_cache* ssl_session_cache);
+
+/* Config for ssl servers. */
+typedef struct {
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs = nullptr;
+  size_t num_key_cert_pairs = 0;
+  char* pem_root_certs = nullptr;
+  grpc_ssl_client_certificate_request_type client_certificate_request =
+      GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE;
+} grpc_ssl_server_config;
+
+/* Creates an SSL server_security_connector.
+   - config is the SSL config to be used for the SSL channel establishment.
+   - sc is a pointer on the connector to be created.
+  This function returns GRPC_SECURITY_OK in case of success or a
+  specific error code otherwise.
+*/
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+grpc_ssl_server_security_connector_create(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_credentials);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_SSL_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.cc
new file mode 100644
index 0000000..2a3f300
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.cc	
@@ -0,0 +1,516 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/transport/chttp2/alpn/alpn.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/security_connector/load_system_roots.h"
+#include "src/core/lib/security/security_connector/ssl_utils_config.h"
+#include "src/core/tsi/ssl_transport_security.h"
+
+/* -- Constants. -- */
+
+#ifndef INSTALL_PREFIX
+static const char* installed_roots_path = "/usr/share/grpc/roots.pem";
+#else
+static const char* installed_roots_path =
+    INSTALL_PREFIX "/share/grpc/roots.pem";
+#endif
+
+#ifndef TSI_OPENSSL_ALPN_SUPPORT
+#define TSI_OPENSSL_ALPN_SUPPORT 1
+#endif
+
+/* -- Overridden default roots. -- */
+
+static grpc_ssl_roots_override_callback ssl_roots_override_cb = nullptr;
+
+void grpc_set_ssl_roots_override_callback(grpc_ssl_roots_override_callback cb) {
+  ssl_roots_override_cb = cb;
+}
+
+/* -- Cipher suites. -- */
+
+static gpr_once cipher_suites_once = GPR_ONCE_INIT;
+static const char* cipher_suites = nullptr;
+
+// All cipher suites for default are compliant with HTTP2.
+GPR_GLOBAL_CONFIG_DEFINE_STRING(
+    grpc_ssl_cipher_suites,
+    "ECDHE-ECDSA-AES128-GCM-SHA256:"
+    "ECDHE-ECDSA-AES256-GCM-SHA384:"
+    "ECDHE-RSA-AES128-GCM-SHA256:"
+    "ECDHE-RSA-AES256-GCM-SHA384",
+    "A colon separated list of cipher suites to use with OpenSSL")
+
+static void init_cipher_suites(void) {
+  grpc_core::UniquePtr<char> value =
+      GPR_GLOBAL_CONFIG_GET(grpc_ssl_cipher_suites);
+  cipher_suites = value.release();
+}
+
+/* --- Util --- */
+
+const char* grpc_get_ssl_cipher_suites(void) {
+  gpr_once_init(&cipher_suites_once, init_cipher_suites);
+  return cipher_suites;
+}
+
+grpc_security_level grpc_tsi_security_level_string_to_enum(
+    const char* security_level) {
+  if (strcmp(security_level, "TSI_INTEGRITY_ONLY") == 0) {
+    return GRPC_INTEGRITY_ONLY;
+  } else if (strcmp(security_level, "TSI_PRIVACY_AND_INTEGRITY") == 0) {
+    return GRPC_PRIVACY_AND_INTEGRITY;
+  }
+  return GRPC_SECURITY_NONE;
+}
+
+const char* grpc_security_level_to_string(grpc_security_level security_level) {
+  if (security_level == GRPC_PRIVACY_AND_INTEGRITY) {
+    return "GRPC_PRIVACY_AND_INTEGRITY";
+  } else if (security_level == GRPC_INTEGRITY_ONLY) {
+    return "GRPC_INTEGRITY_ONLY";
+  }
+  return "GRPC_SECURITY_NONE";
+}
+
+bool grpc_check_security_level(grpc_security_level channel_level,
+                               grpc_security_level call_cred_level) {
+  return static_cast<int>(channel_level) >= static_cast<int>(call_cred_level);
+}
+
+tsi_client_certificate_request_type
+grpc_get_tsi_client_certificate_request_type(
+    grpc_ssl_client_certificate_request_type grpc_request_type) {
+  switch (grpc_request_type) {
+    case GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE:
+      return TSI_DONT_REQUEST_CLIENT_CERTIFICATE;
+
+    case GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
+      return TSI_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY;
+
+    case GRPC_SSL_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY:
+      return TSI_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY;
+
+    case GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
+      return TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY;
+
+    case GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY:
+      return TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY;
+
+    default:
+      return TSI_DONT_REQUEST_CLIENT_CERTIFICATE;
+  }
+}
+
+grpc_error* grpc_ssl_check_alpn(const tsi_peer* peer) {
+#if TSI_OPENSSL_ALPN_SUPPORT
+  /* Check the ALPN if ALPN is supported. */
+  const tsi_peer_property* p =
+      tsi_peer_get_property_by_name(peer, TSI_SSL_ALPN_SELECTED_PROTOCOL);
+  if (p == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Cannot check peer: missing selected ALPN property.");
+  }
+  if (!grpc_chttp2_is_alpn_version_supported(p->value.data, p->value.length)) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Cannot check peer: invalid ALPN value.");
+  }
+#endif /* TSI_OPENSSL_ALPN_SUPPORT */
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_ssl_check_peer_name(grpc_core::StringView peer_name,
+                                     const tsi_peer* peer) {
+  /* Check the peer name if specified. */
+  if (!peer_name.empty() && !grpc_ssl_host_matches_name(peer, peer_name)) {
+    char* msg;
+    gpr_asprintf(&msg, "Peer name %s is not in peer certificate",
+                 peer_name.data());
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+bool grpc_ssl_check_call_host(grpc_core::StringView host,
+                              grpc_core::StringView target_name,
+                              grpc_core::StringView overridden_target_name,
+                              grpc_auth_context* auth_context,
+                              grpc_error** error) {
+  grpc_security_status status = GRPC_SECURITY_ERROR;
+  tsi_peer peer = grpc_shallow_peer_from_ssl_auth_context(auth_context);
+  if (grpc_ssl_host_matches_name(&peer, host)) status = GRPC_SECURITY_OK;
+  /* If the target name was overridden, then the original target_name was
+   'checked' transitively during the previous peer check at the end of the
+   handshake. */
+  if (!overridden_target_name.empty() && host == target_name) {
+    status = GRPC_SECURITY_OK;
+  }
+  if (status != GRPC_SECURITY_OK) {
+    *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "call host does not match SSL server name");
+  }
+  grpc_shallow_peer_destruct(&peer);
+  return true;
+}
+
+const char** grpc_fill_alpn_protocol_strings(size_t* num_alpn_protocols) {
+  GPR_ASSERT(num_alpn_protocols != nullptr);
+  *num_alpn_protocols = grpc_chttp2_num_alpn_versions();
+  const char** alpn_protocol_strings = static_cast<const char**>(
+      gpr_malloc(sizeof(const char*) * (*num_alpn_protocols)));
+  for (size_t i = 0; i < *num_alpn_protocols; i++) {
+    alpn_protocol_strings[i] = grpc_chttp2_get_alpn_version_index(i);
+  }
+  return alpn_protocol_strings;
+}
+
+int grpc_ssl_host_matches_name(const tsi_peer* peer,
+                               grpc_core::StringView peer_name) {
+  grpc_core::StringView allocated_name;
+  grpc_core::StringView ignored_port;
+  grpc_core::SplitHostPort(peer_name, &allocated_name, &ignored_port);
+  if (allocated_name.empty()) return 0;
+
+  // IPv6 zone-id should not be included in comparisons.
+  const size_t zone_id = allocated_name.find('%');
+  if (zone_id != grpc_core::StringView::npos) {
+    allocated_name.remove_suffix(allocated_name.size() - zone_id);
+  }
+  return tsi_ssl_peer_matches_name(peer, allocated_name);
+}
+
+int grpc_ssl_cmp_target_name(
+    grpc_core::StringView target_name, grpc_core::StringView other_target_name,
+    grpc_core::StringView overridden_target_name,
+    grpc_core::StringView other_overridden_target_name) {
+  int c = target_name.compare(other_target_name);
+  if (c != 0) return c;
+  return overridden_target_name.compare(other_overridden_target_name);
+}
+
+grpc_core::RefCountedPtr<grpc_auth_context> grpc_ssl_peer_to_auth_context(
+    const tsi_peer* peer, const char* transport_security_type) {
+  size_t i;
+  const char* peer_identity_property_name = nullptr;
+
+  /* The caller has checked the certificate type property. */
+  GPR_ASSERT(peer->property_count >= 1);
+  grpc_core::RefCountedPtr<grpc_auth_context> ctx =
+      grpc_core::MakeRefCounted<grpc_auth_context>(nullptr);
+  grpc_auth_context_add_cstring_property(
+      ctx.get(), GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME,
+      transport_security_type);
+  for (i = 0; i < peer->property_count; i++) {
+    const tsi_peer_property* prop = &peer->properties[i];
+    if (prop->name == nullptr) continue;
+    if (strcmp(prop->name, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY) == 0) {
+      /* If there is no subject alt name, have the CN as the identity. */
+      if (peer_identity_property_name == nullptr) {
+        peer_identity_property_name = GRPC_X509_CN_PROPERTY_NAME;
+      }
+      grpc_auth_context_add_property(ctx.get(), GRPC_X509_CN_PROPERTY_NAME,
+                                     prop->value.data, prop->value.length);
+    } else if (strcmp(prop->name,
+                      TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY) == 0) {
+      peer_identity_property_name = GRPC_X509_SAN_PROPERTY_NAME;
+      grpc_auth_context_add_property(ctx.get(), GRPC_X509_SAN_PROPERTY_NAME,
+                                     prop->value.data, prop->value.length);
+    } else if (strcmp(prop->name, TSI_X509_PEM_CERT_PROPERTY) == 0) {
+      grpc_auth_context_add_property(ctx.get(),
+                                     GRPC_X509_PEM_CERT_PROPERTY_NAME,
+                                     prop->value.data, prop->value.length);
+    } else if (strcmp(prop->name, TSI_X509_PEM_CERT_CHAIN_PROPERTY) == 0) {
+      grpc_auth_context_add_property(ctx.get(),
+                                     GRPC_X509_PEM_CERT_CHAIN_PROPERTY_NAME,
+                                     prop->value.data, prop->value.length);
+    } else if (strcmp(prop->name, TSI_SSL_SESSION_REUSED_PEER_PROPERTY) == 0) {
+      grpc_auth_context_add_property(ctx.get(),
+                                     GRPC_SSL_SESSION_REUSED_PROPERTY,
+                                     prop->value.data, prop->value.length);
+    } else if (strcmp(prop->name, TSI_SECURITY_LEVEL_PEER_PROPERTY) == 0) {
+      grpc_auth_context_add_property(
+          ctx.get(), GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME,
+          prop->value.data, prop->value.length);
+    }
+  }
+  if (peer_identity_property_name != nullptr) {
+    GPR_ASSERT(grpc_auth_context_set_peer_identity_property_name(
+                   ctx.get(), peer_identity_property_name) == 1);
+  }
+  return ctx;
+}
+
+static void add_shallow_auth_property_to_peer(tsi_peer* peer,
+                                              const grpc_auth_property* prop,
+                                              const char* tsi_prop_name) {
+  tsi_peer_property* tsi_prop = &peer->properties[peer->property_count++];
+  tsi_prop->name = const_cast<char*>(tsi_prop_name);
+  tsi_prop->value.data = prop->value;
+  tsi_prop->value.length = prop->value_length;
+}
+
+tsi_peer grpc_shallow_peer_from_ssl_auth_context(
+    const grpc_auth_context* auth_context) {
+  size_t max_num_props = 0;
+  grpc_auth_property_iterator it;
+  const grpc_auth_property* prop;
+  tsi_peer peer;
+  memset(&peer, 0, sizeof(peer));
+
+  it = grpc_auth_context_property_iterator(auth_context);
+  while (grpc_auth_property_iterator_next(&it) != nullptr) max_num_props++;
+
+  if (max_num_props > 0) {
+    peer.properties = static_cast<tsi_peer_property*>(
+        gpr_malloc(max_num_props * sizeof(tsi_peer_property)));
+    it = grpc_auth_context_property_iterator(auth_context);
+    while ((prop = grpc_auth_property_iterator_next(&it)) != nullptr) {
+      if (strcmp(prop->name, GRPC_X509_SAN_PROPERTY_NAME) == 0) {
+        add_shallow_auth_property_to_peer(
+            &peer, prop, TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY);
+      } else if (strcmp(prop->name, GRPC_X509_CN_PROPERTY_NAME) == 0) {
+        add_shallow_auth_property_to_peer(
+            &peer, prop, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY);
+      } else if (strcmp(prop->name, GRPC_X509_PEM_CERT_PROPERTY_NAME) == 0) {
+        add_shallow_auth_property_to_peer(&peer, prop,
+                                          TSI_X509_PEM_CERT_PROPERTY);
+      } else if (strcmp(prop->name,
+                        GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME) == 0) {
+        add_shallow_auth_property_to_peer(&peer, prop,
+                                          TSI_SECURITY_LEVEL_PEER_PROPERTY);
+      } else if (strcmp(prop->name, GRPC_X509_PEM_CERT_CHAIN_PROPERTY_NAME) ==
+                 0) {
+        add_shallow_auth_property_to_peer(&peer, prop,
+                                          TSI_X509_PEM_CERT_CHAIN_PROPERTY);
+      }
+    }
+  }
+  return peer;
+}
+
+void grpc_shallow_peer_destruct(tsi_peer* peer) {
+  if (peer->properties != nullptr) gpr_free(peer->properties);
+}
+
+grpc_security_status grpc_ssl_tsi_client_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* pem_key_cert_pair, const char* pem_root_certs,
+    bool skip_server_certificate_verification,
+    tsi_ssl_session_cache* ssl_session_cache,
+    tsi_ssl_client_handshaker_factory** handshaker_factory) {
+  const char* root_certs;
+  const tsi_ssl_root_certs_store* root_store;
+  if (pem_root_certs == nullptr) {
+    // Use default root certificates.
+    root_certs = grpc_core::DefaultSslRootStore::GetPemRootCerts();
+    if (root_certs == nullptr) {
+      gpr_log(GPR_ERROR, "Could not get default pem root certs.");
+      return GRPC_SECURITY_ERROR;
+    }
+    root_store = grpc_core::DefaultSslRootStore::GetRootStore();
+  } else {
+    root_certs = pem_root_certs;
+    root_store = nullptr;
+  }
+  bool has_key_cert_pair = pem_key_cert_pair != nullptr &&
+                           pem_key_cert_pair->private_key != nullptr &&
+                           pem_key_cert_pair->cert_chain != nullptr;
+  tsi_ssl_client_handshaker_options options;
+  GPR_DEBUG_ASSERT(root_certs != nullptr);
+  options.pem_root_certs = root_certs;
+  options.root_store = root_store;
+  options.alpn_protocols =
+      grpc_fill_alpn_protocol_strings(&options.num_alpn_protocols);
+  if (has_key_cert_pair) {
+    options.pem_key_cert_pair = pem_key_cert_pair;
+  }
+  options.cipher_suites = grpc_get_ssl_cipher_suites();
+  options.session_cache = ssl_session_cache;
+  options.skip_server_certificate_verification =
+      skip_server_certificate_verification;
+  const tsi_result result =
+      tsi_create_ssl_client_handshaker_factory_with_options(&options,
+                                                            handshaker_factory);
+  gpr_free((void*)options.alpn_protocols);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+            tsi_result_to_string(result));
+    return GRPC_SECURITY_ERROR;
+  }
+  return GRPC_SECURITY_OK;
+}
+
+grpc_security_status grpc_ssl_tsi_server_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs, size_t num_key_cert_pairs,
+    const char* pem_root_certs,
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    tsi_ssl_server_handshaker_factory** handshaker_factory) {
+  size_t num_alpn_protocols = 0;
+  const char** alpn_protocol_strings =
+      grpc_fill_alpn_protocol_strings(&num_alpn_protocols);
+  tsi_ssl_server_handshaker_options options;
+  options.pem_key_cert_pairs = pem_key_cert_pairs;
+  options.num_key_cert_pairs = num_key_cert_pairs;
+  options.pem_client_root_certs = pem_root_certs;
+  options.client_certificate_request =
+      grpc_get_tsi_client_certificate_request_type(client_certificate_request);
+  options.cipher_suites = grpc_get_ssl_cipher_suites();
+  options.alpn_protocols = alpn_protocol_strings;
+  options.num_alpn_protocols = static_cast<uint16_t>(num_alpn_protocols);
+  const tsi_result result =
+      tsi_create_ssl_server_handshaker_factory_with_options(&options,
+                                                            handshaker_factory);
+  gpr_free((void*)alpn_protocol_strings);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+            tsi_result_to_string(result));
+    return GRPC_SECURITY_ERROR;
+  }
+  return GRPC_SECURITY_OK;
+}
+
+/* --- Ssl cache implementation. --- */
+
+grpc_ssl_session_cache* grpc_ssl_session_cache_create_lru(size_t capacity) {
+  tsi_ssl_session_cache* cache = tsi_ssl_session_cache_create_lru(capacity);
+  return reinterpret_cast<grpc_ssl_session_cache*>(cache);
+}
+
+void grpc_ssl_session_cache_destroy(grpc_ssl_session_cache* cache) {
+  tsi_ssl_session_cache* tsi_cache =
+      reinterpret_cast<tsi_ssl_session_cache*>(cache);
+  tsi_ssl_session_cache_unref(tsi_cache);
+}
+
+static void* grpc_ssl_session_cache_arg_copy(void* p) {
+  tsi_ssl_session_cache* tsi_cache =
+      reinterpret_cast<tsi_ssl_session_cache*>(p);
+  // destroy call below will unref the pointer.
+  tsi_ssl_session_cache_ref(tsi_cache);
+  return p;
+}
+
+static void grpc_ssl_session_cache_arg_destroy(void* p) {
+  tsi_ssl_session_cache* tsi_cache =
+      reinterpret_cast<tsi_ssl_session_cache*>(p);
+  tsi_ssl_session_cache_unref(tsi_cache);
+}
+
+static int grpc_ssl_session_cache_arg_cmp(void* p, void* q) {
+  return GPR_ICMP(p, q);
+}
+
+grpc_arg grpc_ssl_session_cache_create_channel_arg(
+    grpc_ssl_session_cache* cache) {
+  static const grpc_arg_pointer_vtable vtable = {
+      grpc_ssl_session_cache_arg_copy,
+      grpc_ssl_session_cache_arg_destroy,
+      grpc_ssl_session_cache_arg_cmp,
+  };
+  return grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_SSL_SESSION_CACHE_ARG), cache, &vtable);
+}
+
+/* --- Default SSL root store implementation. --- */
+
+namespace grpc_core {
+
+tsi_ssl_root_certs_store* DefaultSslRootStore::default_root_store_;
+grpc_slice DefaultSslRootStore::default_pem_root_certs_;
+
+const tsi_ssl_root_certs_store* DefaultSslRootStore::GetRootStore() {
+  InitRootStore();
+  return default_root_store_;
+}
+
+const char* DefaultSslRootStore::GetPemRootCerts() {
+  InitRootStore();
+  return GRPC_SLICE_IS_EMPTY(default_pem_root_certs_)
+             ? nullptr
+             : reinterpret_cast<const char*>
+                   GRPC_SLICE_START_PTR(default_pem_root_certs_);
+}
+
+grpc_slice DefaultSslRootStore::ComputePemRootCerts() {
+  grpc_slice result = grpc_empty_slice();
+  const bool not_use_system_roots =
+      GPR_GLOBAL_CONFIG_GET(grpc_not_use_system_ssl_roots);
+  // First try to load the roots from the configuration.
+  grpc_core::UniquePtr<char> default_root_certs_path =
+      GPR_GLOBAL_CONFIG_GET(grpc_default_ssl_roots_file_path);
+  if (strlen(default_root_certs_path.get()) > 0) {
+    GRPC_LOG_IF_ERROR(
+        "load_file", grpc_load_file(default_root_certs_path.get(), 1, &result));
+  }
+  // Try overridden roots if needed.
+  grpc_ssl_roots_override_result ovrd_res = GRPC_SSL_ROOTS_OVERRIDE_FAIL;
+  if (GRPC_SLICE_IS_EMPTY(result) && ssl_roots_override_cb != nullptr) {
+    char* pem_root_certs = nullptr;
+    ovrd_res = ssl_roots_override_cb(&pem_root_certs);
+    if (ovrd_res == GRPC_SSL_ROOTS_OVERRIDE_OK) {
+      GPR_ASSERT(pem_root_certs != nullptr);
+      result = grpc_slice_from_copied_buffer(
+          pem_root_certs,
+          strlen(pem_root_certs) + 1);  // nullptr terminator.
+    }
+    gpr_free(pem_root_certs);
+  }
+  // Try loading roots from OS trust store if flag is enabled.
+  if (GRPC_SLICE_IS_EMPTY(result) && !not_use_system_roots) {
+    result = LoadSystemRootCerts();
+  }
+  // Fallback to roots manually shipped with gRPC.
+  if (GRPC_SLICE_IS_EMPTY(result) &&
+      ovrd_res != GRPC_SSL_ROOTS_OVERRIDE_FAIL_PERMANENTLY) {
+    GRPC_LOG_IF_ERROR("load_file",
+                      grpc_load_file(installed_roots_path, 1, &result));
+  }
+  return result;
+}
+
+void DefaultSslRootStore::InitRootStore() {
+  static gpr_once once = GPR_ONCE_INIT;
+  gpr_once_init(&once, DefaultSslRootStore::InitRootStoreOnce);
+}
+
+void DefaultSslRootStore::InitRootStoreOnce() {
+  default_pem_root_certs_ = ComputePemRootCerts();
+  if (!GRPC_SLICE_IS_EMPTY(default_pem_root_certs_)) {
+    default_root_store_ =
+        tsi_ssl_root_certs_store_create(reinterpret_cast<const char*>(
+            GRPC_SLICE_START_PTR(default_pem_root_certs_)));
+  }
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.h
new file mode 100644
index 0000000..c521b1f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils.h	
@@ -0,0 +1,182 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/security_connector/ssl_utils_config.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+/* --- Util --- */
+
+/* --- URL schemes. --- */
+#define GRPC_SSL_URL_SCHEME "https"
+
+/* Check ALPN information returned from SSL handshakes. */
+grpc_error* grpc_ssl_check_alpn(const tsi_peer* peer);
+
+/* Check peer name information returned from SSL handshakes. */
+grpc_error* grpc_ssl_check_peer_name(grpc_core::StringView peer_name,
+                                     const tsi_peer* peer);
+/* Compare targer_name information extracted from SSL security connectors. */
+int grpc_ssl_cmp_target_name(
+    grpc_core::StringView target_name, grpc_core::StringView other_target_name,
+    grpc_core::StringView overridden_target_name,
+    grpc_core::StringView other_overridden_target_name);
+/* Check the host that will be set for a call is acceptable.*/
+bool grpc_ssl_check_call_host(grpc_core::StringView host,
+                              grpc_core::StringView target_name,
+                              grpc_core::StringView overridden_target_name,
+                              grpc_auth_context* auth_context,
+                              grpc_error** error);
+/* Return HTTP2-compliant cipher suites that gRPC accepts by default. */
+const char* grpc_get_ssl_cipher_suites(void);
+
+/* Map from grpc_ssl_client_certificate_request_type to
+ * tsi_client_certificate_request_type. */
+tsi_client_certificate_request_type
+grpc_get_tsi_client_certificate_request_type(
+    grpc_ssl_client_certificate_request_type grpc_request_type);
+
+/* Map tsi_security_level string to grpc_security_level enum. */
+grpc_security_level grpc_tsi_security_level_string_to_enum(
+    const char* security_level);
+
+/* Map grpc_security_level enum to a string. */
+const char* grpc_security_level_to_string(grpc_security_level security_level);
+
+/* Check security level of channel and call credential.*/
+bool grpc_check_security_level(grpc_security_level channel_level,
+                               grpc_security_level call_cred_level);
+
+/* Return an array of strings containing alpn protocols. */
+const char** grpc_fill_alpn_protocol_strings(size_t* num_alpn_protocols);
+
+/* Initialize TSI SSL server/client handshaker factory. */
+grpc_security_status grpc_ssl_tsi_client_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* key_cert_pair, const char* pem_root_certs,
+    bool skip_server_certificate_verification,
+    tsi_ssl_session_cache* ssl_session_cache,
+    tsi_ssl_client_handshaker_factory** handshaker_factory);
+
+grpc_security_status grpc_ssl_tsi_server_handshaker_factory_init(
+    tsi_ssl_pem_key_cert_pair* key_cert_pairs, size_t num_key_cert_pairs,
+    const char* pem_root_certs,
+    grpc_ssl_client_certificate_request_type client_certificate_request,
+    tsi_ssl_server_handshaker_factory** handshaker_factory);
+
+/* Exposed for testing only. */
+grpc_core::RefCountedPtr<grpc_auth_context> grpc_ssl_peer_to_auth_context(
+    const tsi_peer* peer, const char* transport_security_type);
+tsi_peer grpc_shallow_peer_from_ssl_auth_context(
+    const grpc_auth_context* auth_context);
+void grpc_shallow_peer_destruct(tsi_peer* peer);
+int grpc_ssl_host_matches_name(const tsi_peer* peer,
+                               grpc_core::StringView peer_name);
+
+/* --- Default SSL Root Store. --- */
+namespace grpc_core {
+
+// The class implements default SSL root store.
+class DefaultSslRootStore {
+ public:
+  // Gets the default SSL root store. Returns nullptr if not found.
+  static const tsi_ssl_root_certs_store* GetRootStore();
+
+  // Gets the default PEM root certificate.
+  static const char* GetPemRootCerts();
+
+ protected:
+  // Returns default PEM root certificates in nullptr terminated grpc_slice.
+  // This function is protected instead of private, so that it can be tested.
+  static grpc_slice ComputePemRootCerts();
+
+ private:
+  // Construct me not!
+  DefaultSslRootStore();
+
+  // Initialization of default SSL root store.
+  static void InitRootStore();
+
+  // One-time initialization of default SSL root store.
+  static void InitRootStoreOnce();
+
+  // SSL root store in tsi_ssl_root_certs_store object.
+  static tsi_ssl_root_certs_store* default_root_store_;
+
+  // Default PEM root certificates.
+  static grpc_slice default_pem_root_certs_;
+};
+
+class PemKeyCertPair {
+ public:
+  // Construct from the C struct.  We steal its members and then immediately
+  // free it.
+  explicit PemKeyCertPair(grpc_ssl_pem_key_cert_pair* pair)
+      : private_key_(const_cast<char*>(pair->private_key)),
+        cert_chain_(const_cast<char*>(pair->cert_chain)) {
+    gpr_free(pair);
+  }
+
+  // Movable.
+  PemKeyCertPair(PemKeyCertPair&& other) {
+    private_key_ = std::move(other.private_key_);
+    cert_chain_ = std::move(other.cert_chain_);
+  }
+  PemKeyCertPair& operator=(PemKeyCertPair&& other) {
+    private_key_ = std::move(other.private_key_);
+    cert_chain_ = std::move(other.cert_chain_);
+    return *this;
+  }
+
+  // Copyable.
+  PemKeyCertPair(const PemKeyCertPair& other)
+      : private_key_(gpr_strdup(other.private_key())),
+        cert_chain_(gpr_strdup(other.cert_chain())) {}
+  PemKeyCertPair& operator=(const PemKeyCertPair& other) {
+    private_key_ = grpc_core::UniquePtr<char>(gpr_strdup(other.private_key()));
+    cert_chain_ = grpc_core::UniquePtr<char>(gpr_strdup(other.cert_chain()));
+    return *this;
+  }
+
+  char* private_key() const { return private_key_.get(); }
+  char* cert_chain() const { return cert_chain_.get(); }
+
+ private:
+  grpc_core::UniquePtr<char> private_key_;
+  grpc_core::UniquePtr<char> cert_chain_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.cc
new file mode 100644
index 0000000..2d056a7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.cc	
@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/ssl_utils_config.h"
+
+/** Config variable that points to the default SSL roots file. This file
+    must be a PEM encoded file with all the roots such as the one that can be
+    downloaded from https://pki.google.com/roots.pem. */
+GPR_GLOBAL_CONFIG_DEFINE_STRING(grpc_default_ssl_roots_file_path, "",
+                                "Path to the default SSL roots file.");
+
+/** Config variable used as a flag to enable/disable loading system root
+    certificates from the OS trust store. */
+GPR_GLOBAL_CONFIG_DEFINE_BOOL(grpc_not_use_system_ssl_roots, false,
+                              "Disable loading system root certificates.");
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.h
new file mode 100644
index 0000000..efaf497
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/ssl_utils_config.h	
@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/global_config.h"
+
+GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_default_ssl_roots_file_path);
+GPR_GLOBAL_CONFIG_DECLARE_BOOL(grpc_not_use_system_ssl_roots);
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_SSL_UTILS_CONFIG_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.cc
new file mode 100644
index 0000000..b60752b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.cc	
@@ -0,0 +1,577 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/security_connector/tls/tls_security_connector.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gprpp/host_port.h"
+#include "src/core/lib/security/credentials/ssl/ssl_credentials.h"
+#include "src/core/lib/security/credentials/tls/tls_credentials.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/transport.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+
+namespace grpc_core {
+
+namespace {
+
+tsi_ssl_pem_key_cert_pair* ConvertToTsiPemKeyCertPair(
+    const grpc_tls_key_materials_config::PemKeyCertPairList& cert_pair_list) {
+  tsi_ssl_pem_key_cert_pair* tsi_pairs = nullptr;
+  size_t num_key_cert_pairs = cert_pair_list.size();
+  if (num_key_cert_pairs > 0) {
+    GPR_ASSERT(cert_pair_list.data() != nullptr);
+    tsi_pairs = static_cast<tsi_ssl_pem_key_cert_pair*>(
+        gpr_zalloc(num_key_cert_pairs * sizeof(tsi_ssl_pem_key_cert_pair)));
+  }
+  for (size_t i = 0; i < num_key_cert_pairs; i++) {
+    GPR_ASSERT(cert_pair_list[i].private_key() != nullptr);
+    GPR_ASSERT(cert_pair_list[i].cert_chain() != nullptr);
+    tsi_pairs[i].cert_chain = gpr_strdup(cert_pair_list[i].cert_chain());
+    tsi_pairs[i].private_key = gpr_strdup(cert_pair_list[i].private_key());
+  }
+  return tsi_pairs;
+}
+
+}  // namespace
+
+/** -- Util function to fetch TLS server/channel credentials. -- */
+grpc_status_code TlsFetchKeyMaterials(
+    const grpc_core::RefCountedPtr<grpc_tls_key_materials_config>&
+        key_materials_config,
+    const grpc_tls_credentials_options& options, bool server_config,
+    grpc_ssl_certificate_config_reload_status* reload_status) {
+  GPR_ASSERT(key_materials_config != nullptr);
+  bool is_key_materials_empty =
+      key_materials_config->pem_key_cert_pair_list().empty();
+  if (options.credential_reload_config() == nullptr && is_key_materials_empty &&
+      server_config) {
+    gpr_log(GPR_ERROR,
+            "Either credential reload config or key materials should be "
+            "provisioned.");
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  grpc_status_code status = GRPC_STATUS_OK;
+  /* Use credential reload config to fetch credentials. */
+  if (options.credential_reload_config() != nullptr) {
+    grpc_tls_credential_reload_arg* arg = new grpc_tls_credential_reload_arg();
+    arg->key_materials_config = key_materials_config.get();
+    int result = options.credential_reload_config()->Schedule(arg);
+    if (result) {
+      /* Do not support async credential reload. */
+      gpr_log(GPR_ERROR, "Async credential reload is unsupported now.");
+      status =
+          is_key_materials_empty ? GRPC_STATUS_UNIMPLEMENTED : GRPC_STATUS_OK;
+    } else {
+      GPR_ASSERT(reload_status != nullptr);
+      *reload_status = arg->status;
+      if (arg->status == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED) {
+        /* Key materials is not empty. */
+        gpr_log(GPR_DEBUG, "Credential does not change after reload.");
+      } else if (arg->status == GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_FAIL) {
+        gpr_log(GPR_ERROR, "Credential reload failed with an error:");
+        if (arg->error_details != nullptr) {
+          gpr_log(GPR_ERROR, "%s", arg->error_details);
+        }
+        status = is_key_materials_empty ? GRPC_STATUS_INTERNAL : GRPC_STATUS_OK;
+      }
+    }
+    gpr_free((void*)arg->error_details);
+    if (arg->destroy_context != nullptr) {
+      arg->destroy_context(arg->context);
+    }
+    delete arg;
+  }
+  return status;
+}
+
+grpc_error* TlsCheckHostName(const char* peer_name, const tsi_peer* peer) {
+  /* Check the peer name if specified. */
+  if (peer_name != nullptr && !grpc_ssl_host_matches_name(peer, peer_name)) {
+    char* msg;
+    gpr_asprintf(&msg, "Peer name %s is not in peer certificate", peer_name);
+    grpc_error* error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    gpr_free(msg);
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+TlsChannelSecurityConnector::TlsChannelSecurityConnector(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name, const char* overridden_target_name)
+    : grpc_channel_security_connector(GRPC_SSL_URL_SCHEME,
+                                      std::move(channel_creds),
+                                      std::move(request_metadata_creds)),
+      overridden_target_name_(overridden_target_name == nullptr
+                                  ? nullptr
+                                  : gpr_strdup(overridden_target_name)) {
+  key_materials_config_ = grpc_tls_key_materials_config_create()->Ref();
+  check_arg_ = ServerAuthorizationCheckArgCreate(this);
+  grpc_core::StringView host;
+  grpc_core::StringView port;
+  grpc_core::SplitHostPort(target_name, &host, &port);
+  target_name_ = grpc_core::StringViewToCString(host);
+}
+
+TlsChannelSecurityConnector::~TlsChannelSecurityConnector() {
+  if (client_handshaker_factory_ != nullptr) {
+    tsi_ssl_client_handshaker_factory_unref(client_handshaker_factory_);
+  }
+  if (key_materials_config_.get() != nullptr) {
+    key_materials_config_.get()->Unref();
+  }
+  ServerAuthorizationCheckArgDestroy(check_arg_);
+}
+
+void TlsChannelSecurityConnector::add_handshakers(
+    const grpc_channel_args* args, grpc_pollset_set* /*interested_parties*/,
+    grpc_core::HandshakeManager* handshake_mgr) {
+  if (RefreshHandshakerFactory() != GRPC_SECURITY_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory refresh failed.");
+    return;
+  }
+  // Instantiate TSI handshaker.
+  tsi_handshaker* tsi_hs = nullptr;
+  tsi_result result = tsi_ssl_client_handshaker_factory_create_handshaker(
+      client_handshaker_factory_,
+      overridden_target_name_ != nullptr ? overridden_target_name_.get()
+                                         : target_name_.get(),
+      &tsi_hs);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+            tsi_result_to_string(result));
+    return;
+  }
+  // Create handshakers.
+  handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(tsi_hs, this, args));
+}
+
+void TlsChannelSecurityConnector::check_peer(
+    tsi_peer peer, grpc_endpoint* /*ep*/,
+    grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+    grpc_closure* on_peer_checked) {
+  const char* target_name = overridden_target_name_ != nullptr
+                                ? overridden_target_name_.get()
+                                : target_name_.get();
+  grpc_error* error = grpc_ssl_check_alpn(&peer);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+    tsi_peer_destruct(&peer);
+    return;
+  }
+  *auth_context =
+      grpc_ssl_peer_to_auth_context(&peer, GRPC_TLS_TRANSPORT_SECURITY_TYPE);
+  const TlsCredentials* creds =
+      static_cast<const TlsCredentials*>(channel_creds());
+  if (creds->options().server_verification_option() ==
+      GRPC_TLS_SERVER_VERIFICATION) {
+    /* Do the default host name check if specifying the target name. */
+    error = TlsCheckHostName(target_name, &peer);
+    if (error != GRPC_ERROR_NONE) {
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+      tsi_peer_destruct(&peer);
+      return;
+    }
+  }
+  /* Do the custom server authorization check, if specified by the user. */
+  const grpc_tls_server_authorization_check_config* config =
+      creds->options().server_authorization_check_config();
+  /* If server authorization config is not null, use it to perform
+   * server authorization check. */
+  if (config != nullptr) {
+    const tsi_peer_property* p =
+        tsi_peer_get_property_by_name(&peer, TSI_X509_PEM_CERT_PROPERTY);
+    if (p == nullptr) {
+      error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+          "Cannot check peer: missing pem cert property.");
+    } else {
+      char* peer_pem = static_cast<char*>(gpr_zalloc(p->value.length + 1));
+      memcpy(peer_pem, p->value.data, p->value.length);
+      GPR_ASSERT(check_arg_ != nullptr);
+      check_arg_->peer_cert = check_arg_->peer_cert == nullptr
+                                  ? gpr_strdup(peer_pem)
+                                  : check_arg_->peer_cert;
+      check_arg_->target_name = check_arg_->target_name == nullptr
+                                    ? gpr_strdup(target_name)
+                                    : check_arg_->target_name;
+      on_peer_checked_ = on_peer_checked;
+      gpr_free(peer_pem);
+      const tsi_peer_property* chain = tsi_peer_get_property_by_name(
+          &peer, TSI_X509_PEM_CERT_CHAIN_PROPERTY);
+      if (chain != nullptr) {
+        char* peer_pem_chain =
+            static_cast<char*>(gpr_zalloc(chain->value.length + 1));
+        memcpy(peer_pem_chain, chain->value.data, chain->value.length);
+        check_arg_->peer_cert_full_chain =
+            check_arg_->peer_cert_full_chain == nullptr
+                ? gpr_strdup(peer_pem_chain)
+                : check_arg_->peer_cert_full_chain;
+        gpr_free(peer_pem_chain);
+      }
+      int callback_status = config->Schedule(check_arg_);
+      /* Server authorization check is handled asynchronously. */
+      if (callback_status) {
+        tsi_peer_destruct(&peer);
+        return;
+      }
+      /* Server authorization check is handled synchronously. */
+      error = ProcessServerAuthorizationCheckResult(check_arg_);
+    }
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+  tsi_peer_destruct(&peer);
+}
+
+int TlsChannelSecurityConnector::cmp(
+    const grpc_security_connector* other_sc) const {
+  auto* other = reinterpret_cast<const TlsChannelSecurityConnector*>(other_sc);
+  int c = channel_security_connector_cmp(other);
+  if (c != 0) {
+    return c;
+  }
+  return grpc_ssl_cmp_target_name(target_name_.get(), other->target_name_.get(),
+                                  overridden_target_name_.get(),
+                                  other->overridden_target_name_.get());
+}
+
+bool TlsChannelSecurityConnector::check_call_host(
+    grpc_core::StringView host, grpc_auth_context* auth_context,
+    grpc_closure* on_call_host_checked, grpc_error** error) {
+  return grpc_ssl_check_call_host(host, target_name_.get(),
+                                  overridden_target_name_.get(), auth_context,
+                                  error);
+}
+
+void TlsChannelSecurityConnector::cancel_check_call_host(
+    grpc_closure* /*on_call_host_checked*/, grpc_error* error) {
+  GRPC_ERROR_UNREF(error);
+}
+
+grpc_core::RefCountedPtr<grpc_channel_security_connector>
+TlsChannelSecurityConnector::CreateTlsChannelSecurityConnector(
+    grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+    grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+    const char* target_name, const char* overridden_target_name,
+    tsi_ssl_session_cache* ssl_session_cache) {
+  if (channel_creds == nullptr) {
+    gpr_log(GPR_ERROR,
+            "channel_creds is nullptr in "
+            "TlsChannelSecurityConnectorCreate()");
+    return nullptr;
+  }
+  if (target_name == nullptr) {
+    gpr_log(GPR_ERROR,
+            "target_name is nullptr in "
+            "TlsChannelSecurityConnectorCreate()");
+    return nullptr;
+  }
+  grpc_core::RefCountedPtr<TlsChannelSecurityConnector> c =
+      grpc_core::MakeRefCounted<TlsChannelSecurityConnector>(
+          std::move(channel_creds), std::move(request_metadata_creds),
+          target_name, overridden_target_name);
+  if (c->InitializeHandshakerFactory(ssl_session_cache) != GRPC_SECURITY_OK) {
+    gpr_log(GPR_ERROR, "Could not initialize client handshaker factory.");
+    return nullptr;
+  }
+  return c;
+}
+
+grpc_security_status TlsChannelSecurityConnector::ReplaceHandshakerFactory(
+    tsi_ssl_session_cache* ssl_session_cache) {
+  const TlsCredentials* creds =
+      static_cast<const TlsCredentials*>(channel_creds());
+  bool skip_server_certificate_verification =
+      creds->options().server_verification_option() ==
+      GRPC_TLS_SKIP_ALL_SERVER_VERIFICATION;
+  /* Free the client handshaker factory if exists. */
+  if (client_handshaker_factory_) {
+    tsi_ssl_client_handshaker_factory_unref(client_handshaker_factory_);
+  }
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pair = ConvertToTsiPemKeyCertPair(
+      key_materials_config_->pem_key_cert_pair_list());
+  grpc_security_status status = grpc_ssl_tsi_client_handshaker_factory_init(
+      pem_key_cert_pair, key_materials_config_->pem_root_certs(),
+      skip_server_certificate_verification, ssl_session_cache,
+      &client_handshaker_factory_);
+  /* Free memory. */
+  grpc_tsi_ssl_pem_key_cert_pairs_destroy(pem_key_cert_pair, 1);
+  return status;
+}
+
+grpc_security_status TlsChannelSecurityConnector::InitializeHandshakerFactory(
+    tsi_ssl_session_cache* ssl_session_cache) {
+  grpc_core::MutexLock lock(&mu_);
+  const TlsCredentials* creds =
+      static_cast<const TlsCredentials*>(channel_creds());
+  grpc_tls_key_materials_config* key_materials_config =
+      creds->options().key_materials_config();
+  /* Copy key materials config from credential options. */
+  if (key_materials_config != nullptr) {
+    grpc_tls_key_materials_config::PemKeyCertPairList cert_pair_list =
+        key_materials_config->pem_key_cert_pair_list();
+    auto pem_root_certs = grpc_core::UniquePtr<char>(
+        gpr_strdup(key_materials_config->pem_root_certs()));
+    key_materials_config_->set_key_materials(std::move(pem_root_certs),
+                                             std::move(cert_pair_list));
+  }
+  grpc_ssl_certificate_config_reload_status reload_status =
+      GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED;
+  if (TlsFetchKeyMaterials(key_materials_config_, creds->options(), false,
+                           &reload_status) != GRPC_STATUS_OK) {
+    /* Raise an error if key materials are not populated. */
+    return GRPC_SECURITY_ERROR;
+  }
+  return ReplaceHandshakerFactory(ssl_session_cache);
+}
+
+grpc_security_status TlsChannelSecurityConnector::RefreshHandshakerFactory() {
+  grpc_core::MutexLock lock(&mu_);
+  const TlsCredentials* creds =
+      static_cast<const TlsCredentials*>(channel_creds());
+  grpc_ssl_certificate_config_reload_status reload_status =
+      GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED;
+  if (TlsFetchKeyMaterials(key_materials_config_, creds->options(), false,
+                           &reload_status) != GRPC_STATUS_OK) {
+    return GRPC_SECURITY_ERROR;
+  }
+  if (reload_status != GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_NEW) {
+    // Re-use existing handshaker factory.
+    return GRPC_SECURITY_OK;
+  } else {
+    return ReplaceHandshakerFactory(nullptr);
+  }
+}
+
+void TlsChannelSecurityConnector::ServerAuthorizationCheckDone(
+    grpc_tls_server_authorization_check_arg* arg) {
+  GPR_ASSERT(arg != nullptr);
+  grpc_core::ExecCtx exec_ctx;
+  grpc_error* error = ProcessServerAuthorizationCheckResult(arg);
+  TlsChannelSecurityConnector* connector =
+      static_cast<TlsChannelSecurityConnector*>(arg->cb_user_data);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, connector->on_peer_checked_, error);
+}
+
+grpc_error* TlsChannelSecurityConnector::ProcessServerAuthorizationCheckResult(
+    grpc_tls_server_authorization_check_arg* arg) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  char* msg = nullptr;
+  /* Server authorization check is cancelled by caller. */
+  if (arg->status == GRPC_STATUS_CANCELLED) {
+    gpr_asprintf(&msg,
+                 "Server authorization check is cancelled by the caller with "
+                 "error: %s",
+                 arg->error_details);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  } else if (arg->status == GRPC_STATUS_OK) {
+    /* Server authorization check completed successfully but returned check
+     * failure. */
+    if (!arg->success) {
+      gpr_asprintf(&msg, "Server authorization check failed with error: %s",
+                   arg->error_details);
+      error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+    }
+    /* Server authorization check did not complete correctly. */
+  } else {
+    gpr_asprintf(
+        &msg,
+        "Server authorization check did not finish correctly with error: %s",
+        arg->error_details);
+    error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
+  }
+  gpr_free(msg);
+  return error;
+}
+
+grpc_tls_server_authorization_check_arg*
+TlsChannelSecurityConnector::ServerAuthorizationCheckArgCreate(
+    void* user_data) {
+  grpc_tls_server_authorization_check_arg* arg =
+      new grpc_tls_server_authorization_check_arg();
+  arg->cb = ServerAuthorizationCheckDone;
+  arg->cb_user_data = user_data;
+  arg->status = GRPC_STATUS_OK;
+  return arg;
+}
+
+void TlsChannelSecurityConnector::ServerAuthorizationCheckArgDestroy(
+    grpc_tls_server_authorization_check_arg* arg) {
+  if (arg == nullptr) {
+    return;
+  }
+  gpr_free((void*)arg->target_name);
+  gpr_free((void*)arg->peer_cert);
+  if (arg->peer_cert_full_chain) gpr_free((void*)arg->peer_cert_full_chain);
+  gpr_free((void*)arg->error_details);
+  if (arg->destroy_context != nullptr) {
+    arg->destroy_context(arg->context);
+  }
+  delete arg;
+}
+
+TlsServerSecurityConnector::TlsServerSecurityConnector(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds)
+    : grpc_server_security_connector(GRPC_SSL_URL_SCHEME,
+                                     std::move(server_creds)) {
+  key_materials_config_ = grpc_tls_key_materials_config_create()->Ref();
+}
+
+TlsServerSecurityConnector::~TlsServerSecurityConnector() {
+  if (server_handshaker_factory_ != nullptr) {
+    tsi_ssl_server_handshaker_factory_unref(server_handshaker_factory_);
+  }
+  if (key_materials_config_.get() != nullptr) {
+    key_materials_config_.get()->Unref();
+  }
+}
+
+void TlsServerSecurityConnector::add_handshakers(
+    const grpc_channel_args* args, grpc_pollset_set* /*interested_parties*/,
+    grpc_core::HandshakeManager* handshake_mgr) {
+  /* Refresh handshaker factory if needed. */
+  if (RefreshHandshakerFactory() != GRPC_SECURITY_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory refresh failed.");
+    return;
+  }
+  /* Create a TLS TSI handshaker for server. */
+  tsi_handshaker* tsi_hs = nullptr;
+  tsi_result result = tsi_ssl_server_handshaker_factory_create_handshaker(
+      server_handshaker_factory_, &tsi_hs);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+            tsi_result_to_string(result));
+    return;
+  }
+  handshake_mgr->Add(grpc_core::SecurityHandshakerCreate(tsi_hs, this, args));
+}
+
+void TlsServerSecurityConnector::check_peer(
+    tsi_peer peer, grpc_endpoint* /*ep*/,
+    grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+    grpc_closure* on_peer_checked) {
+  grpc_error* error = grpc_ssl_check_alpn(&peer);
+  *auth_context =
+      grpc_ssl_peer_to_auth_context(&peer, GRPC_TLS_TRANSPORT_SECURITY_TYPE);
+  tsi_peer_destruct(&peer);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, on_peer_checked, error);
+}
+
+int TlsServerSecurityConnector::cmp(
+    const grpc_security_connector* other) const {
+  return server_security_connector_cmp(
+      static_cast<const grpc_server_security_connector*>(other));
+}
+
+grpc_core::RefCountedPtr<grpc_server_security_connector>
+TlsServerSecurityConnector::CreateTlsServerSecurityConnector(
+    grpc_core::RefCountedPtr<grpc_server_credentials> server_creds) {
+  if (server_creds == nullptr) {
+    gpr_log(GPR_ERROR,
+            "server_creds is nullptr in "
+            "TlsServerSecurityConnectorCreate()");
+    return nullptr;
+  }
+  grpc_core::RefCountedPtr<TlsServerSecurityConnector> c =
+      grpc_core::MakeRefCounted<TlsServerSecurityConnector>(
+          std::move(server_creds));
+  if (c->InitializeHandshakerFactory() != GRPC_SECURITY_OK) {
+    gpr_log(GPR_ERROR, "Could not initialize server handshaker factory.");
+    return nullptr;
+  }
+  return c;
+}
+
+grpc_security_status TlsServerSecurityConnector::ReplaceHandshakerFactory() {
+  const TlsServerCredentials* creds =
+      static_cast<const TlsServerCredentials*>(server_creds());
+  /* Free the server handshaker factory if exists. */
+  if (server_handshaker_factory_) {
+    tsi_ssl_server_handshaker_factory_unref(server_handshaker_factory_);
+  }
+  GPR_ASSERT(!key_materials_config_->pem_key_cert_pair_list().empty());
+  tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs = ConvertToTsiPemKeyCertPair(
+      key_materials_config_->pem_key_cert_pair_list());
+  size_t num_key_cert_pairs =
+      key_materials_config_->pem_key_cert_pair_list().size();
+  grpc_security_status status = grpc_ssl_tsi_server_handshaker_factory_init(
+      pem_key_cert_pairs, num_key_cert_pairs,
+      key_materials_config_->pem_root_certs(),
+      creds->options().cert_request_type(), &server_handshaker_factory_);
+  /* Free memory. */
+  grpc_tsi_ssl_pem_key_cert_pairs_destroy(pem_key_cert_pairs,
+                                          num_key_cert_pairs);
+  return status;
+}
+
+grpc_security_status TlsServerSecurityConnector::InitializeHandshakerFactory() {
+  grpc_core::MutexLock lock(&mu_);
+  const TlsServerCredentials* creds =
+      static_cast<const TlsServerCredentials*>(server_creds());
+  grpc_tls_key_materials_config* key_materials_config =
+      creds->options().key_materials_config();
+  if (key_materials_config != nullptr) {
+    grpc_tls_key_materials_config::PemKeyCertPairList cert_pair_list =
+        key_materials_config->pem_key_cert_pair_list();
+    auto pem_root_certs = grpc_core::UniquePtr<char>(
+        gpr_strdup(key_materials_config->pem_root_certs()));
+    key_materials_config_->set_key_materials(std::move(pem_root_certs),
+                                             std::move(cert_pair_list));
+  }
+  grpc_ssl_certificate_config_reload_status reload_status =
+      GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED;
+  if (TlsFetchKeyMaterials(key_materials_config_, creds->options(), true,
+                           &reload_status) != GRPC_STATUS_OK) {
+    /* Raise an error if key materials are not populated. */
+    return GRPC_SECURITY_ERROR;
+  }
+  return ReplaceHandshakerFactory();
+}
+
+grpc_security_status TlsServerSecurityConnector::RefreshHandshakerFactory() {
+  grpc_core::MutexLock lock(&mu_);
+  const TlsServerCredentials* creds =
+      static_cast<const TlsServerCredentials*>(server_creds());
+  grpc_ssl_certificate_config_reload_status reload_status =
+      GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_UNCHANGED;
+  if (TlsFetchKeyMaterials(key_materials_config_, creds->options(), true,
+                           &reload_status) != GRPC_STATUS_OK) {
+    return GRPC_SECURITY_ERROR;
+  }
+  if (reload_status != GRPC_SSL_CERTIFICATE_CONFIG_RELOAD_NEW) {
+    /* At this point, we should have key materials populated. */
+    return GRPC_SECURITY_OK;
+  } else {
+    return ReplaceHandshakerFactory();
+  }
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.h
new file mode 100644
index 0000000..85c6976
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/security_connector/tls/tls_security_connector.h	
@@ -0,0 +1,161 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/tls/grpc_tls_credentials_options.h"
+
+#define GRPC_TLS_TRANSPORT_SECURITY_TYPE "tls"
+
+namespace grpc_core {
+
+// TLS channel security connector.
+class TlsChannelSecurityConnector final
+    : public grpc_channel_security_connector {
+ public:
+  // static factory method to create a TLS channel security connector.
+  static grpc_core::RefCountedPtr<grpc_channel_security_connector>
+  CreateTlsChannelSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const char* overridden_target_name,
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  TlsChannelSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_channel_credentials> channel_creds,
+      grpc_core::RefCountedPtr<grpc_call_credentials> request_metadata_creds,
+      const char* target_name, const char* overridden_target_name);
+  ~TlsChannelSecurityConnector() override;
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* interested_parties,
+                       grpc_core::HandshakeManager* handshake_mgr) override;
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override;
+
+  int cmp(const grpc_security_connector* other_sc) const override;
+
+  bool check_call_host(grpc_core::StringView host,
+                       grpc_auth_context* auth_context,
+                       grpc_closure* on_call_host_checked,
+                       grpc_error** error) override;
+
+  void cancel_check_call_host(grpc_closure* on_call_host_checked,
+                              grpc_error* error) override;
+
+ private:
+  // Initialize SSL TSI client handshaker factory.
+  grpc_security_status InitializeHandshakerFactory(
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  // A util function to create a new client handshaker factory to replace
+  // the existing one if exists.
+  grpc_security_status ReplaceHandshakerFactory(
+      tsi_ssl_session_cache* ssl_session_cache);
+
+  // gRPC-provided callback executed by application, which servers to bring the
+  // control back to gRPC core.
+  static void ServerAuthorizationCheckDone(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to process server authorization check result.
+  static grpc_error* ProcessServerAuthorizationCheckResult(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to create a server authorization check arg instance.
+  static grpc_tls_server_authorization_check_arg*
+  ServerAuthorizationCheckArgCreate(void* user_data);
+
+  // A util function to destroy a server authorization check arg instance.
+  static void ServerAuthorizationCheckArgDestroy(
+      grpc_tls_server_authorization_check_arg* arg);
+
+  // A util function to refresh SSL TSI client handshaker factory with a valid
+  // credential.
+  grpc_security_status RefreshHandshakerFactory();
+
+  grpc_core::Mutex mu_;
+  grpc_closure* on_peer_checked_;
+  grpc_core::UniquePtr<char> target_name_;
+  grpc_core::UniquePtr<char> overridden_target_name_;
+  tsi_ssl_client_handshaker_factory* client_handshaker_factory_ = nullptr;
+  grpc_tls_server_authorization_check_arg* check_arg_;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+};
+
+// TLS server security connector.
+class TlsServerSecurityConnector final : public grpc_server_security_connector {
+ public:
+  // static factory method to create a TLS server security connector.
+  static grpc_core::RefCountedPtr<grpc_server_security_connector>
+  CreateTlsServerSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+
+  explicit TlsServerSecurityConnector(
+      grpc_core::RefCountedPtr<grpc_server_credentials> server_creds);
+  ~TlsServerSecurityConnector() override;
+
+  void add_handshakers(const grpc_channel_args* args,
+                       grpc_pollset_set* interested_parties,
+                       grpc_core::HandshakeManager* handshake_mgr) override;
+
+  void check_peer(tsi_peer peer, grpc_endpoint* ep,
+                  grpc_core::RefCountedPtr<grpc_auth_context>* auth_context,
+                  grpc_closure* on_peer_checked) override;
+
+  int cmp(const grpc_security_connector* other) const override;
+
+ private:
+  // Initialize SSL TSI server handshaker factory.
+  grpc_security_status InitializeHandshakerFactory();
+
+  // A util function to create a new server handshaker factory to replace the
+  // existing once if exists.
+  grpc_security_status ReplaceHandshakerFactory();
+
+  // A util function to refresh SSL TSI server handshaker factory with a valid
+  // credential.
+  grpc_security_status RefreshHandshakerFactory();
+
+  grpc_core::Mutex mu_;
+  tsi_ssl_server_handshaker_factory* server_handshaker_factory_ = nullptr;
+  grpc_core::RefCountedPtr<grpc_tls_key_materials_config> key_materials_config_;
+};
+
+// ---- Functions below are exposed for testing only -----------------------
+grpc_status_code TlsFetchKeyMaterials(
+    const grpc_core::RefCountedPtr<grpc_tls_key_materials_config>&
+        key_materials_config,
+    const grpc_tls_credentials_options& options, bool server_config,
+    grpc_ssl_certificate_config_reload_status* status);
+
+// TlsCheckHostName checks if |peer_name| matches the identity information
+// contained in |peer|. This is AKA hostname check.
+grpc_error* TlsCheckHostName(const char* peer_name, const tsi_peer* peer);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_TLS_TLS_SECURITY_CONNECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/auth_filters.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/auth_filters.h
new file mode 100644
index 0000000..5e73c21
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/auth_filters.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc_security.h>
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_client_auth_filter;
+extern const grpc_channel_filter grpc_server_auth_filter;
+
+void grpc_auth_metadata_context_build(
+    const char* url_scheme, const grpc_slice& call_host,
+    const grpc_slice& call_method, grpc_auth_context* auth_context,
+    grpc_auth_metadata_context* auth_md_context);
+
+void grpc_auth_metadata_context_copy(grpc_auth_metadata_context* from,
+                                     grpc_auth_metadata_context* to);
+
+void grpc_auth_metadata_context_reset(grpc_auth_metadata_context* context);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_AUTH_FILTERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/client_auth_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/client_auth_filter.cc
new file mode 100644
index 0000000..c3658a9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/client_auth_filter.cc	
@@ -0,0 +1,467 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/transport/auth_filters.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/security_connector/ssl_utils.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define MAX_CREDENTIALS_METADATA_COUNT 4
+
+namespace {
+
+/* We can have a per-channel credentials. */
+struct channel_data {
+  channel_data(grpc_channel_security_connector* security_connector,
+               grpc_auth_context* auth_context)
+      : security_connector(
+            security_connector->Ref(DEBUG_LOCATION, "client_auth_filter")),
+        auth_context(auth_context->Ref(DEBUG_LOCATION, "client_auth_filter")) {}
+  ~channel_data() {
+    security_connector.reset(DEBUG_LOCATION, "client_auth_filter");
+    auth_context.reset(DEBUG_LOCATION, "client_auth_filter");
+  }
+
+  grpc_core::RefCountedPtr<grpc_channel_security_connector> security_connector;
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+};
+
+/* We can have a per-call credentials. */
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : owning_call(args.call_stack), call_combiner(args.call_combiner) {
+    channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+    GPR_ASSERT(args.context != nullptr);
+    if (args.context[GRPC_CONTEXT_SECURITY].value == nullptr) {
+      args.context[GRPC_CONTEXT_SECURITY].value =
+          grpc_client_security_context_create(args.arena, /*creds=*/nullptr);
+      args.context[GRPC_CONTEXT_SECURITY].destroy =
+          grpc_client_security_context_destroy;
+    }
+    grpc_client_security_context* sec_ctx =
+        static_cast<grpc_client_security_context*>(
+            args.context[GRPC_CONTEXT_SECURITY].value);
+    sec_ctx->auth_context.reset(DEBUG_LOCATION, "client_auth_filter");
+    sec_ctx->auth_context =
+        chand->auth_context->Ref(DEBUG_LOCATION, "client_auth_filter");
+  }
+
+  // This method is technically the dtor of this class. However, since
+  // `get_request_metadata_cancel_closure` can run in parallel to
+  // `destroy_call_elem`, we cannot call the dtor in them. Otherwise,
+  // fields will be accessed after calling dtor, and msan correctly complains
+  // that the memory is not initialized.
+  void destroy() {
+    grpc_credentials_mdelem_array_destroy(&md_array);
+    creds.reset();
+    grpc_slice_unref_internal(host);
+    grpc_slice_unref_internal(method);
+    grpc_auth_metadata_context_reset(&auth_md_context);
+  }
+
+  grpc_call_stack* owning_call;
+  grpc_core::CallCombiner* call_combiner;
+  grpc_core::RefCountedPtr<grpc_call_credentials> creds;
+  grpc_slice host = grpc_empty_slice();
+  grpc_slice method = grpc_empty_slice();
+  /* pollset{_set} bound to this call; if we need to make external
+     network requests, they should be done under a pollset added to this
+     pollset_set so that work can progress when this call wants work to progress
+  */
+  grpc_polling_entity* pollent = nullptr;
+  grpc_credentials_mdelem_array md_array;
+  grpc_linked_mdelem md_links[MAX_CREDENTIALS_METADATA_COUNT] = {};
+  grpc_auth_metadata_context auth_md_context =
+      grpc_auth_metadata_context();  // Zero-initialize the C struct.
+  grpc_closure async_result_closure;
+  grpc_closure check_call_host_cancel_closure;
+  grpc_closure get_request_metadata_cancel_closure;
+};
+
+}  // namespace
+
+void grpc_auth_metadata_context_copy(grpc_auth_metadata_context* from,
+                                     grpc_auth_metadata_context* to) {
+  grpc_auth_metadata_context_reset(to);
+  to->channel_auth_context = from->channel_auth_context;
+  if (to->channel_auth_context != nullptr) {
+    const_cast<grpc_auth_context*>(to->channel_auth_context)
+        ->Ref(DEBUG_LOCATION, "grpc_auth_metadata_context_copy")
+        .release();
+  }
+  to->service_url = gpr_strdup(from->service_url);
+  to->method_name = gpr_strdup(from->method_name);
+}
+
+void grpc_auth_metadata_context_reset(
+    grpc_auth_metadata_context* auth_md_context) {
+  if (auth_md_context->service_url != nullptr) {
+    gpr_free(const_cast<char*>(auth_md_context->service_url));
+    auth_md_context->service_url = nullptr;
+  }
+  if (auth_md_context->method_name != nullptr) {
+    gpr_free(const_cast<char*>(auth_md_context->method_name));
+    auth_md_context->method_name = nullptr;
+  }
+  if (auth_md_context->channel_auth_context != nullptr) {
+    const_cast<grpc_auth_context*>(auth_md_context->channel_auth_context)
+        ->Unref(DEBUG_LOCATION, "grpc_auth_metadata_context");
+    auth_md_context->channel_auth_context = nullptr;
+  }
+}
+
+static void add_error(grpc_error** combined, grpc_error* error) {
+  if (error == GRPC_ERROR_NONE) return;
+  if (*combined == GRPC_ERROR_NONE) {
+    *combined = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Client auth metadata plugin error");
+  }
+  *combined = grpc_error_add_child(*combined, error);
+}
+
+static void on_credentials_metadata(void* arg, grpc_error* input_error) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  grpc_call_element* elem =
+      static_cast<grpc_call_element*>(batch->handler_private.extra_arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_auth_metadata_context_reset(&calld->auth_md_context);
+  grpc_error* error = GRPC_ERROR_REF(input_error);
+  if (error == GRPC_ERROR_NONE) {
+    GPR_ASSERT(calld->md_array.size <= MAX_CREDENTIALS_METADATA_COUNT);
+    GPR_ASSERT(batch->send_initial_metadata);
+    grpc_metadata_batch* mdb =
+        batch->payload->send_initial_metadata.send_initial_metadata;
+    for (size_t i = 0; i < calld->md_array.size; ++i) {
+      add_error(&error, grpc_metadata_batch_add_tail(
+                            mdb, &calld->md_links[i],
+                            GRPC_MDELEM_REF(calld->md_array.md[i])));
+    }
+  }
+  if (error == GRPC_ERROR_NONE) {
+    grpc_call_next_op(elem, batch);
+  } else {
+    error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS,
+                               GRPC_STATUS_UNAVAILABLE);
+    grpc_transport_stream_op_batch_finish_with_failure(batch, error,
+                                                       calld->call_combiner);
+  }
+  GRPC_CALL_STACK_UNREF(calld->owning_call, "get_request_metadata");
+}
+
+void grpc_auth_metadata_context_build(
+    const char* url_scheme, const grpc_slice& call_host,
+    const grpc_slice& call_method, grpc_auth_context* auth_context,
+    grpc_auth_metadata_context* auth_md_context) {
+  char* service = grpc_slice_to_c_string(call_method);
+  char* last_slash = strrchr(service, '/');
+  char* method_name = nullptr;
+  char* service_url = nullptr;
+  grpc_auth_metadata_context_reset(auth_md_context);
+  if (last_slash == nullptr) {
+    gpr_log(GPR_ERROR, "No '/' found in fully qualified method name");
+    service[0] = '\0';
+    method_name = gpr_strdup("");
+  } else if (last_slash == service) {
+    method_name = gpr_strdup("");
+  } else {
+    *last_slash = '\0';
+    method_name = gpr_strdup(last_slash + 1);
+  }
+  char* host_and_port = grpc_slice_to_c_string(call_host);
+  if (url_scheme != nullptr && strcmp(url_scheme, GRPC_SSL_URL_SCHEME) == 0) {
+    /* Remove the port if it is 443. */
+    char* port_delimiter = strrchr(host_and_port, ':');
+    if (port_delimiter != nullptr && strcmp(port_delimiter + 1, "443") == 0) {
+      *port_delimiter = '\0';
+    }
+  }
+  gpr_asprintf(&service_url, "%s://%s%s",
+               url_scheme == nullptr ? "" : url_scheme, host_and_port, service);
+  auth_md_context->service_url = service_url;
+  auth_md_context->method_name = method_name;
+  auth_md_context->channel_auth_context =
+      auth_context == nullptr
+          ? nullptr
+          : auth_context->Ref(DEBUG_LOCATION, "grpc_auth_metadata_context")
+                .release();
+  gpr_free(service);
+  gpr_free(host_and_port);
+}
+
+static void cancel_get_request_metadata(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error != GRPC_ERROR_NONE) {
+    calld->creds->cancel_get_request_metadata(&calld->md_array,
+                                              GRPC_ERROR_REF(error));
+  }
+}
+
+static void send_security_metadata(grpc_call_element* elem,
+                                   grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  grpc_client_security_context* ctx =
+      static_cast<grpc_client_security_context*>(
+          batch->payload->context[GRPC_CONTEXT_SECURITY].value);
+  grpc_call_credentials* channel_call_creds =
+      chand->security_connector->mutable_request_metadata_creds();
+  int call_creds_has_md = (ctx != nullptr) && (ctx->creds != nullptr);
+
+  if (channel_call_creds == nullptr && !call_creds_has_md) {
+    /* Skip sending metadata altogether. */
+    grpc_call_next_op(elem, batch);
+    return;
+  }
+
+  if (channel_call_creds != nullptr && call_creds_has_md) {
+    calld->creds = grpc_core::RefCountedPtr<grpc_call_credentials>(
+        grpc_composite_call_credentials_create(channel_call_creds,
+                                               ctx->creds.get(), nullptr));
+    if (calld->creds == nullptr) {
+      grpc_transport_stream_op_batch_finish_with_failure(
+          batch,
+          grpc_error_set_int(
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                  "Incompatible credentials set on channel and call."),
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED),
+          calld->call_combiner);
+      return;
+    }
+  } else {
+    calld->creds =
+        call_creds_has_md ? ctx->creds->Ref() : channel_call_creds->Ref();
+  }
+
+  /* Check security level of call credential and channel, and do not send
+   * metadata if the check fails. */
+  grpc_auth_property_iterator it = grpc_auth_context_find_properties_by_name(
+      chand->auth_context.get(), GRPC_TRANSPORT_SECURITY_LEVEL_PROPERTY_NAME);
+  const grpc_auth_property* prop = grpc_auth_property_iterator_next(&it);
+  if (prop == nullptr) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        batch,
+        grpc_error_set_int(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                "Established channel does not have an auth property "
+                "representing a security level."),
+            GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED),
+        calld->call_combiner);
+    return;
+  }
+  grpc_security_level call_cred_security_level =
+      calld->creds->min_security_level();
+  int is_security_level_ok = grpc_check_security_level(
+      grpc_tsi_security_level_string_to_enum(prop->value),
+      call_cred_security_level);
+  if (!is_security_level_ok) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        batch,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                               "Established channel does not have a sufficient "
+                               "security level to transfer call credential."),
+                           GRPC_ERROR_INT_GRPC_STATUS,
+                           GRPC_STATUS_UNAUTHENTICATED),
+        calld->call_combiner);
+    return;
+  }
+
+  grpc_auth_metadata_context_build(
+      chand->security_connector->url_scheme(), calld->host, calld->method,
+      chand->auth_context.get(), &calld->auth_md_context);
+
+  GPR_ASSERT(calld->pollent != nullptr);
+  GRPC_CALL_STACK_REF(calld->owning_call, "get_request_metadata");
+  GRPC_CLOSURE_INIT(&calld->async_result_closure, on_credentials_metadata,
+                    batch, grpc_schedule_on_exec_ctx);
+  grpc_error* error = GRPC_ERROR_NONE;
+  if (calld->creds->get_request_metadata(
+          calld->pollent, calld->auth_md_context, &calld->md_array,
+          &calld->async_result_closure, &error)) {
+    // Synchronous return; invoke on_credentials_metadata() directly.
+    on_credentials_metadata(batch, error);
+    GRPC_ERROR_UNREF(error);
+  } else {
+    // Async return; register cancellation closure with call combiner.
+    calld->call_combiner->SetNotifyOnCancel(GRPC_CLOSURE_INIT(
+        &calld->get_request_metadata_cancel_closure,
+        cancel_get_request_metadata, elem, grpc_schedule_on_exec_ctx));
+  }
+}
+
+static void on_host_checked(void* arg, grpc_error* error) {
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  grpc_call_element* elem =
+      static_cast<grpc_call_element*>(batch->handler_private.extra_arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error == GRPC_ERROR_NONE) {
+    send_security_metadata(elem, batch);
+  } else {
+    char* error_msg;
+    char* host = grpc_slice_to_c_string(calld->host);
+    gpr_asprintf(&error_msg, "Invalid host %s set in :authority metadata.",
+                 host);
+    gpr_free(host);
+    grpc_transport_stream_op_batch_finish_with_failure(
+        batch,
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg),
+                           GRPC_ERROR_INT_GRPC_STATUS,
+                           GRPC_STATUS_UNAUTHENTICATED),
+        calld->call_combiner);
+    gpr_free(error_msg);
+  }
+  GRPC_CALL_STACK_UNREF(calld->owning_call, "check_call_host");
+}
+
+static void cancel_check_call_host(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  if (error != GRPC_ERROR_NONE) {
+    chand->security_connector->cancel_check_call_host(
+        &calld->async_result_closure, GRPC_ERROR_REF(error));
+  }
+}
+
+static void client_auth_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  GPR_TIMER_SCOPE("auth_start_transport_stream_op_batch", 0);
+
+  /* grab pointers to our data from the call element */
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+
+  if (batch->send_initial_metadata) {
+    grpc_metadata_batch* metadata =
+        batch->payload->send_initial_metadata.send_initial_metadata;
+    if (metadata->idx.named.path != nullptr) {
+      calld->method =
+          grpc_slice_ref_internal(GRPC_MDVALUE(metadata->idx.named.path->md));
+    }
+    if (metadata->idx.named.authority != nullptr) {
+      calld->host = grpc_slice_ref_internal(
+          GRPC_MDVALUE(metadata->idx.named.authority->md));
+      batch->handler_private.extra_arg = elem;
+      GRPC_CALL_STACK_REF(calld->owning_call, "check_call_host");
+      GRPC_CLOSURE_INIT(&calld->async_result_closure, on_host_checked, batch,
+                        grpc_schedule_on_exec_ctx);
+      grpc_core::StringView call_host(
+          grpc_core::StringViewFromSlice(calld->host));
+      grpc_error* error = GRPC_ERROR_NONE;
+      if (chand->security_connector->check_call_host(
+              call_host, chand->auth_context.get(),
+              &calld->async_result_closure, &error)) {
+        // Synchronous return; invoke on_host_checked() directly.
+        on_host_checked(batch, error);
+        GRPC_ERROR_UNREF(error);
+      } else {
+        // Async return; register cancellation closure with call combiner.
+        calld->call_combiner->SetNotifyOnCancel(GRPC_CLOSURE_INIT(
+            &calld->check_call_host_cancel_closure, cancel_check_call_host,
+            elem, grpc_schedule_on_exec_ctx));
+      }
+      return; /* early exit */
+    }
+  }
+
+  /* pass control down the stack */
+  grpc_call_next_op(elem, batch);
+}
+
+/* Constructor for call_data */
+static grpc_error* client_auth_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+static void client_auth_set_pollset_or_pollset_set(
+    grpc_call_element* elem, grpc_polling_entity* pollent) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->pollent = pollent;
+}
+
+/* Destructor for call_data */
+static void client_auth_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->destroy();
+}
+
+/* Constructor for channel_data */
+static grpc_error* client_auth_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  /* The first and the last filters tend to be implemented differently to
+     handle the case that there's no 'next' filter to call on the up or down
+     path */
+  GPR_ASSERT(!args->is_last);
+  grpc_security_connector* sc =
+      grpc_security_connector_find_in_args(args->channel_args);
+  if (sc == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Security connector missing from client auth filter args");
+  }
+  grpc_auth_context* auth_context =
+      grpc_find_auth_context_in_args(args->channel_args);
+  if (auth_context == nullptr) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Auth context missing from client auth filter args");
+  }
+  new (elem->channel_data) channel_data(
+      static_cast<grpc_channel_security_connector*>(sc), auth_context);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+static void client_auth_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  chand->~channel_data();
+}
+
+const grpc_channel_filter grpc_client_auth_filter = {
+    client_auth_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    client_auth_init_call_elem,
+    client_auth_set_pollset_or_pollset_set,
+    client_auth_destroy_call_elem,
+    sizeof(channel_data),
+    client_auth_init_channel_elem,
+    client_auth_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "client-auth"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.cc
new file mode 100644
index 0000000..eaa8c7d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.cc	
@@ -0,0 +1,446 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* With the addition of a libuv endpoint, sockaddr.h now includes uv.h when
+   using that endpoint. Because of various transitive includes in uv.h,
+   including windows.h on Windows, uv.h must be included before other system
+   headers. Therefore, sockaddr.h must always be included first */
+#include <grpc/support/port_platform.h>
+
+#include <new>
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/security/transport/secure_endpoint.h"
+#include "src/core/lib/security/transport/tsi_error.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/tsi/transport_security_grpc.h"
+
+#define STAGING_BUFFER_SIZE 8192
+
+static void on_read(void* user_data, grpc_error* error);
+
+namespace {
+struct secure_endpoint {
+  secure_endpoint(const grpc_endpoint_vtable* vtable,
+                  tsi_frame_protector* protector,
+                  tsi_zero_copy_grpc_protector* zero_copy_protector,
+                  grpc_endpoint* transport, grpc_slice* leftover_slices,
+                  size_t leftover_nslices)
+      : wrapped_ep(transport),
+        protector(protector),
+        zero_copy_protector(zero_copy_protector) {
+    base.vtable = vtable;
+    gpr_mu_init(&protector_mu);
+    GRPC_CLOSURE_INIT(&on_read, ::on_read, this, grpc_schedule_on_exec_ctx);
+    grpc_slice_buffer_init(&source_buffer);
+    grpc_slice_buffer_init(&leftover_bytes);
+    for (size_t i = 0; i < leftover_nslices; i++) {
+      grpc_slice_buffer_add(&leftover_bytes,
+                            grpc_slice_ref_internal(leftover_slices[i]));
+    }
+    grpc_slice_buffer_init(&output_buffer);
+    gpr_ref_init(&ref, 1);
+  }
+
+  ~secure_endpoint() {
+    grpc_endpoint_destroy(wrapped_ep);
+    tsi_frame_protector_destroy(protector);
+    tsi_zero_copy_grpc_protector_destroy(zero_copy_protector);
+    grpc_slice_buffer_destroy_internal(&source_buffer);
+    grpc_slice_buffer_destroy_internal(&leftover_bytes);
+    grpc_slice_unref_internal(read_staging_buffer);
+    grpc_slice_unref_internal(write_staging_buffer);
+    grpc_slice_buffer_destroy_internal(&output_buffer);
+    gpr_mu_destroy(&protector_mu);
+  }
+
+  grpc_endpoint base;
+  grpc_endpoint* wrapped_ep;
+  struct tsi_frame_protector* protector;
+  struct tsi_zero_copy_grpc_protector* zero_copy_protector;
+  gpr_mu protector_mu;
+  /* saved upper level callbacks and user_data. */
+  grpc_closure* read_cb = nullptr;
+  grpc_closure* write_cb = nullptr;
+  grpc_closure on_read;
+  grpc_slice_buffer* read_buffer = nullptr;
+  grpc_slice_buffer source_buffer;
+  /* saved handshaker leftover data to unprotect. */
+  grpc_slice_buffer leftover_bytes;
+  /* buffers for read and write */
+  grpc_slice read_staging_buffer = GRPC_SLICE_MALLOC(STAGING_BUFFER_SIZE);
+  grpc_slice write_staging_buffer = GRPC_SLICE_MALLOC(STAGING_BUFFER_SIZE);
+  grpc_slice_buffer output_buffer;
+
+  gpr_refcount ref;
+};
+}  // namespace
+
+grpc_core::TraceFlag grpc_trace_secure_endpoint(false, "secure_endpoint");
+
+static void destroy(secure_endpoint* ep) { delete ep; }
+
+#ifndef NDEBUG
+#define SECURE_ENDPOINT_UNREF(ep, reason) \
+  secure_endpoint_unref((ep), (reason), __FILE__, __LINE__)
+#define SECURE_ENDPOINT_REF(ep, reason) \
+  secure_endpoint_ref((ep), (reason), __FILE__, __LINE__)
+static void secure_endpoint_unref(secure_endpoint* ep, const char* reason,
+                                  const char* file, int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_secure_endpoint)) {
+    gpr_atm val = gpr_atm_no_barrier_load(&ep->ref.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "SECENDP unref %p : %s %" PRIdPTR " -> %" PRIdPTR, ep, reason, val,
+            val - 1);
+  }
+  if (gpr_unref(&ep->ref)) {
+    destroy(ep);
+  }
+}
+
+static void secure_endpoint_ref(secure_endpoint* ep, const char* reason,
+                                const char* file, int line) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_secure_endpoint)) {
+    gpr_atm val = gpr_atm_no_barrier_load(&ep->ref.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "SECENDP   ref %p : %s %" PRIdPTR " -> %" PRIdPTR, ep, reason, val,
+            val + 1);
+  }
+  gpr_ref(&ep->ref);
+}
+#else
+#define SECURE_ENDPOINT_UNREF(ep, reason) secure_endpoint_unref((ep))
+#define SECURE_ENDPOINT_REF(ep, reason) secure_endpoint_ref((ep))
+static void secure_endpoint_unref(secure_endpoint* ep) {
+  if (gpr_unref(&ep->ref)) {
+    destroy(ep);
+  }
+}
+
+static void secure_endpoint_ref(secure_endpoint* ep) { gpr_ref(&ep->ref); }
+#endif
+
+static void flush_read_staging_buffer(secure_endpoint* ep, uint8_t** cur,
+                                      uint8_t** end) {
+  grpc_slice_buffer_add(ep->read_buffer, ep->read_staging_buffer);
+  ep->read_staging_buffer = GRPC_SLICE_MALLOC(STAGING_BUFFER_SIZE);
+  *cur = GRPC_SLICE_START_PTR(ep->read_staging_buffer);
+  *end = GRPC_SLICE_END_PTR(ep->read_staging_buffer);
+}
+
+static void call_read_cb(secure_endpoint* ep, grpc_error* error) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_secure_endpoint)) {
+    size_t i;
+    for (i = 0; i < ep->read_buffer->count; i++) {
+      char* data = grpc_dump_slice(ep->read_buffer->slices[i],
+                                   GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_INFO, "READ %p: %s", ep, data);
+      gpr_free(data);
+    }
+  }
+  ep->read_buffer = nullptr;
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, ep->read_cb, error);
+  SECURE_ENDPOINT_UNREF(ep, "read");
+}
+
+static void on_read(void* user_data, grpc_error* error) {
+  unsigned i;
+  uint8_t keep_looping = 0;
+  tsi_result result = TSI_OK;
+  secure_endpoint* ep = static_cast<secure_endpoint*>(user_data);
+  uint8_t* cur = GRPC_SLICE_START_PTR(ep->read_staging_buffer);
+  uint8_t* end = GRPC_SLICE_END_PTR(ep->read_staging_buffer);
+
+  if (error != GRPC_ERROR_NONE) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_buffer);
+    call_read_cb(ep, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                         "Secure read failed", &error, 1));
+    return;
+  }
+
+  if (ep->zero_copy_protector != nullptr) {
+    // Use zero-copy grpc protector to unprotect.
+    result = tsi_zero_copy_grpc_protector_unprotect(
+        ep->zero_copy_protector, &ep->source_buffer, ep->read_buffer);
+  } else {
+    // Use frame protector to unprotect.
+    /* TODO(yangg) check error, maybe bail out early */
+    for (i = 0; i < ep->source_buffer.count; i++) {
+      grpc_slice encrypted = ep->source_buffer.slices[i];
+      uint8_t* message_bytes = GRPC_SLICE_START_PTR(encrypted);
+      size_t message_size = GRPC_SLICE_LENGTH(encrypted);
+
+      while (message_size > 0 || keep_looping) {
+        size_t unprotected_buffer_size_written = static_cast<size_t>(end - cur);
+        size_t processed_message_size = message_size;
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_unprotect(
+            ep->protector, message_bytes, &processed_message_size, cur,
+            &unprotected_buffer_size_written);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) {
+          gpr_log(GPR_ERROR, "Decryption error: %s",
+                  tsi_result_to_string(result));
+          break;
+        }
+        message_bytes += processed_message_size;
+        message_size -= processed_message_size;
+        cur += unprotected_buffer_size_written;
+
+        if (cur == end) {
+          flush_read_staging_buffer(ep, &cur, &end);
+          /* Force to enter the loop again to extract buffered bytes in
+             protector. The bytes could be buffered because of running out of
+             staging_buffer. If this happens at the end of all slices, doing
+             another unprotect avoids leaving data in the protector. */
+          keep_looping = 1;
+        } else if (unprotected_buffer_size_written > 0) {
+          keep_looping = 1;
+        } else {
+          keep_looping = 0;
+        }
+      }
+      if (result != TSI_OK) break;
+    }
+
+    if (cur != GRPC_SLICE_START_PTR(ep->read_staging_buffer)) {
+      grpc_slice_buffer_add(
+          ep->read_buffer,
+          grpc_slice_split_head(
+              &ep->read_staging_buffer,
+              static_cast<size_t>(
+                  cur - GRPC_SLICE_START_PTR(ep->read_staging_buffer))));
+    }
+  }
+
+  /* TODO(yangg) experiment with moving this block after read_cb to see if it
+     helps latency */
+  grpc_slice_buffer_reset_and_unref_internal(&ep->source_buffer);
+
+  if (result != TSI_OK) {
+    grpc_slice_buffer_reset_and_unref_internal(ep->read_buffer);
+    call_read_cb(
+        ep, grpc_set_tsi_error_result(
+                GRPC_ERROR_CREATE_FROM_STATIC_STRING("Unwrap failed"), result));
+    return;
+  }
+
+  call_read_cb(ep, GRPC_ERROR_NONE);
+}
+
+static void endpoint_read(grpc_endpoint* secure_ep, grpc_slice_buffer* slices,
+                          grpc_closure* cb, bool urgent) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  ep->read_cb = cb;
+  ep->read_buffer = slices;
+  grpc_slice_buffer_reset_and_unref_internal(ep->read_buffer);
+
+  SECURE_ENDPOINT_REF(ep, "read");
+  if (ep->leftover_bytes.count) {
+    grpc_slice_buffer_swap(&ep->leftover_bytes, &ep->source_buffer);
+    GPR_ASSERT(ep->leftover_bytes.count == 0);
+    on_read(ep, GRPC_ERROR_NONE);
+    return;
+  }
+
+  grpc_endpoint_read(ep->wrapped_ep, &ep->source_buffer, &ep->on_read, urgent);
+}
+
+static void flush_write_staging_buffer(secure_endpoint* ep, uint8_t** cur,
+                                       uint8_t** end) {
+  grpc_slice_buffer_add(&ep->output_buffer, ep->write_staging_buffer);
+  ep->write_staging_buffer = GRPC_SLICE_MALLOC(STAGING_BUFFER_SIZE);
+  *cur = GRPC_SLICE_START_PTR(ep->write_staging_buffer);
+  *end = GRPC_SLICE_END_PTR(ep->write_staging_buffer);
+}
+
+static void endpoint_write(grpc_endpoint* secure_ep, grpc_slice_buffer* slices,
+                           grpc_closure* cb, void* arg) {
+  GPR_TIMER_SCOPE("secure_endpoint.endpoint_write", 0);
+
+  unsigned i;
+  tsi_result result = TSI_OK;
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  uint8_t* cur = GRPC_SLICE_START_PTR(ep->write_staging_buffer);
+  uint8_t* end = GRPC_SLICE_END_PTR(ep->write_staging_buffer);
+
+  grpc_slice_buffer_reset_and_unref_internal(&ep->output_buffer);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_secure_endpoint)) {
+    for (i = 0; i < slices->count; i++) {
+      char* data =
+          grpc_dump_slice(slices->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
+      gpr_log(GPR_INFO, "WRITE %p: %s", ep, data);
+      gpr_free(data);
+    }
+  }
+
+  if (ep->zero_copy_protector != nullptr) {
+    // Use zero-copy grpc protector to protect.
+    result = tsi_zero_copy_grpc_protector_protect(ep->zero_copy_protector,
+                                                  slices, &ep->output_buffer);
+  } else {
+    // Use frame protector to protect.
+    for (i = 0; i < slices->count; i++) {
+      grpc_slice plain = slices->slices[i];
+      uint8_t* message_bytes = GRPC_SLICE_START_PTR(plain);
+      size_t message_size = GRPC_SLICE_LENGTH(plain);
+      while (message_size > 0) {
+        size_t protected_buffer_size_to_send = static_cast<size_t>(end - cur);
+        size_t processed_message_size = message_size;
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_protect(ep->protector, message_bytes,
+                                             &processed_message_size, cur,
+                                             &protected_buffer_size_to_send);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) {
+          gpr_log(GPR_ERROR, "Encryption error: %s",
+                  tsi_result_to_string(result));
+          break;
+        }
+        message_bytes += processed_message_size;
+        message_size -= processed_message_size;
+        cur += protected_buffer_size_to_send;
+
+        if (cur == end) {
+          flush_write_staging_buffer(ep, &cur, &end);
+        }
+      }
+      if (result != TSI_OK) break;
+    }
+    if (result == TSI_OK) {
+      size_t still_pending_size;
+      do {
+        size_t protected_buffer_size_to_send = static_cast<size_t>(end - cur);
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_protect_flush(
+            ep->protector, cur, &protected_buffer_size_to_send,
+            &still_pending_size);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) break;
+        cur += protected_buffer_size_to_send;
+        if (cur == end) {
+          flush_write_staging_buffer(ep, &cur, &end);
+        }
+      } while (still_pending_size > 0);
+      if (cur != GRPC_SLICE_START_PTR(ep->write_staging_buffer)) {
+        grpc_slice_buffer_add(
+            &ep->output_buffer,
+            grpc_slice_split_head(
+                &ep->write_staging_buffer,
+                static_cast<size_t>(
+                    cur - GRPC_SLICE_START_PTR(ep->write_staging_buffer))));
+      }
+    }
+  }
+
+  if (result != TSI_OK) {
+    /* TODO(yangg) do different things according to the error type? */
+    grpc_slice_buffer_reset_and_unref_internal(&ep->output_buffer);
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION, cb,
+        grpc_set_tsi_error_result(
+            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Wrap failed"), result));
+    return;
+  }
+
+  grpc_endpoint_write(ep->wrapped_ep, &ep->output_buffer, cb, arg);
+}
+
+static void endpoint_shutdown(grpc_endpoint* secure_ep, grpc_error* why) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  grpc_endpoint_shutdown(ep->wrapped_ep, why);
+}
+
+static void endpoint_destroy(grpc_endpoint* secure_ep) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  SECURE_ENDPOINT_UNREF(ep, "destroy");
+}
+
+static void endpoint_add_to_pollset(grpc_endpoint* secure_ep,
+                                    grpc_pollset* pollset) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  grpc_endpoint_add_to_pollset(ep->wrapped_ep, pollset);
+}
+
+static void endpoint_add_to_pollset_set(grpc_endpoint* secure_ep,
+                                        grpc_pollset_set* pollset_set) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  grpc_endpoint_add_to_pollset_set(ep->wrapped_ep, pollset_set);
+}
+
+static void endpoint_delete_from_pollset_set(grpc_endpoint* secure_ep,
+                                             grpc_pollset_set* pollset_set) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  grpc_endpoint_delete_from_pollset_set(ep->wrapped_ep, pollset_set);
+}
+
+static char* endpoint_get_peer(grpc_endpoint* secure_ep) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  return grpc_endpoint_get_peer(ep->wrapped_ep);
+}
+
+static int endpoint_get_fd(grpc_endpoint* secure_ep) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  return grpc_endpoint_get_fd(ep->wrapped_ep);
+}
+
+static grpc_resource_user* endpoint_get_resource_user(
+    grpc_endpoint* secure_ep) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  return grpc_endpoint_get_resource_user(ep->wrapped_ep);
+}
+
+static bool endpoint_can_track_err(grpc_endpoint* secure_ep) {
+  secure_endpoint* ep = reinterpret_cast<secure_endpoint*>(secure_ep);
+  return grpc_endpoint_can_track_err(ep->wrapped_ep);
+}
+
+static const grpc_endpoint_vtable vtable = {endpoint_read,
+                                            endpoint_write,
+                                            endpoint_add_to_pollset,
+                                            endpoint_add_to_pollset_set,
+                                            endpoint_delete_from_pollset_set,
+                                            endpoint_shutdown,
+                                            endpoint_destroy,
+                                            endpoint_get_resource_user,
+                                            endpoint_get_peer,
+                                            endpoint_get_fd,
+                                            endpoint_can_track_err};
+
+grpc_endpoint* grpc_secure_endpoint_create(
+    struct tsi_frame_protector* protector,
+    struct tsi_zero_copy_grpc_protector* zero_copy_protector,
+    grpc_endpoint* transport, grpc_slice* leftover_slices,
+    size_t leftover_nslices) {
+  secure_endpoint* ep =
+      new secure_endpoint(&vtable, protector, zero_copy_protector, transport,
+                          leftover_slices, leftover_nslices);
+  return &ep->base;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.h
new file mode 100644
index 0000000..e7e3351
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/secure_endpoint.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/iomgr/endpoint.h"
+
+struct tsi_frame_protector;
+struct tsi_zero_copy_grpc_protector;
+
+extern grpc_core::TraceFlag grpc_trace_secure_endpoint;
+
+/* Takes ownership of protector, zero_copy_protector, and to_wrap, and refs
+ * leftover_slices. If zero_copy_protector is not NULL, protector will never be
+ * used. */
+grpc_endpoint* grpc_secure_endpoint_create(
+    struct tsi_frame_protector* protector,
+    struct tsi_zero_copy_grpc_protector* zero_copy_protector,
+    grpc_endpoint* to_wrap, grpc_slice* leftover_slices,
+    size_t leftover_nslices);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.cc
new file mode 100644
index 0000000..4566657
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.cc	
@@ -0,0 +1,574 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/transport/security_handshaker.h"
+
+#include <stdbool.h>
+#include <string.h>
+#include <limits>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/transport/secure_endpoint.h"
+#include "src/core/lib/security/transport/tsi_error.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/transport_security_grpc.h"
+
+#define GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE 256
+
+namespace grpc_core {
+
+namespace {
+
+class SecurityHandshaker : public Handshaker {
+ public:
+  SecurityHandshaker(tsi_handshaker* handshaker,
+                     grpc_security_connector* connector,
+                     const grpc_channel_args* args);
+  ~SecurityHandshaker() override;
+  void Shutdown(grpc_error* why) override;
+  void DoHandshake(grpc_tcp_server_acceptor* acceptor,
+                   grpc_closure* on_handshake_done,
+                   HandshakerArgs* args) override;
+  const char* name() const override { return "security"; }
+
+ private:
+  grpc_error* DoHandshakerNextLocked(const unsigned char* bytes_received,
+                                     size_t bytes_received_size);
+
+  grpc_error* OnHandshakeNextDoneLocked(
+      tsi_result result, const unsigned char* bytes_to_send,
+      size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result);
+  void HandshakeFailedLocked(grpc_error* error);
+  void CleanupArgsForFailureLocked();
+
+  static void OnHandshakeDataReceivedFromPeerFn(void* arg, grpc_error* error);
+  static void OnHandshakeDataSentToPeerFn(void* arg, grpc_error* error);
+  static void OnHandshakeDataReceivedFromPeerFnScheduler(void* arg,
+                                                         grpc_error* error);
+  static void OnHandshakeDataSentToPeerFnScheduler(void* arg,
+                                                   grpc_error* error);
+  static void OnHandshakeNextDoneGrpcWrapper(
+      tsi_result result, void* user_data, const unsigned char* bytes_to_send,
+      size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result);
+  static void OnPeerCheckedFn(void* arg, grpc_error* error);
+  void OnPeerCheckedInner(grpc_error* error);
+  size_t MoveReadBufferIntoHandshakeBuffer();
+  grpc_error* CheckPeerLocked();
+
+  // State set at creation time.
+  tsi_handshaker* handshaker_;
+  RefCountedPtr<grpc_security_connector> connector_;
+
+  gpr_mu mu_;
+
+  bool is_shutdown_ = false;
+  // Endpoint and read buffer to destroy after a shutdown.
+  grpc_endpoint* endpoint_to_destroy_ = nullptr;
+  grpc_slice_buffer* read_buffer_to_destroy_ = nullptr;
+
+  // State saved while performing the handshake.
+  HandshakerArgs* args_ = nullptr;
+  grpc_closure* on_handshake_done_ = nullptr;
+
+  size_t handshake_buffer_size_;
+  unsigned char* handshake_buffer_;
+  grpc_slice_buffer outgoing_;
+  grpc_closure on_handshake_data_sent_to_peer_;
+  grpc_closure on_handshake_data_received_from_peer_;
+  grpc_closure on_peer_checked_;
+  RefCountedPtr<grpc_auth_context> auth_context_;
+  tsi_handshaker_result* handshaker_result_ = nullptr;
+  size_t max_frame_size_ = 0;
+};
+
+SecurityHandshaker::SecurityHandshaker(tsi_handshaker* handshaker,
+                                       grpc_security_connector* connector,
+                                       const grpc_channel_args* args)
+    : handshaker_(handshaker),
+      connector_(connector->Ref(DEBUG_LOCATION, "handshake")),
+      handshake_buffer_size_(GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE),
+      handshake_buffer_(
+          static_cast<uint8_t*>(gpr_malloc(handshake_buffer_size_))) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_TSI_MAX_FRAME_SIZE);
+  if (arg != nullptr && arg->type == GRPC_ARG_INTEGER) {
+    max_frame_size_ = grpc_channel_arg_get_integer(
+        arg, {0, 0, std::numeric_limits<int>::max()});
+  }
+  gpr_mu_init(&mu_);
+  grpc_slice_buffer_init(&outgoing_);
+  GRPC_CLOSURE_INIT(&on_peer_checked_, &SecurityHandshaker::OnPeerCheckedFn,
+                    this, grpc_schedule_on_exec_ctx);
+}
+
+SecurityHandshaker::~SecurityHandshaker() {
+  gpr_mu_destroy(&mu_);
+  tsi_handshaker_destroy(handshaker_);
+  tsi_handshaker_result_destroy(handshaker_result_);
+  if (endpoint_to_destroy_ != nullptr) {
+    grpc_endpoint_destroy(endpoint_to_destroy_);
+  }
+  if (read_buffer_to_destroy_ != nullptr) {
+    grpc_slice_buffer_destroy_internal(read_buffer_to_destroy_);
+    gpr_free(read_buffer_to_destroy_);
+  }
+  gpr_free(handshake_buffer_);
+  grpc_slice_buffer_destroy_internal(&outgoing_);
+  auth_context_.reset(DEBUG_LOCATION, "handshake");
+  connector_.reset(DEBUG_LOCATION, "handshake");
+}
+
+size_t SecurityHandshaker::MoveReadBufferIntoHandshakeBuffer() {
+  size_t bytes_in_read_buffer = args_->read_buffer->length;
+  if (handshake_buffer_size_ < bytes_in_read_buffer) {
+    handshake_buffer_ = static_cast<uint8_t*>(
+        gpr_realloc(handshake_buffer_, bytes_in_read_buffer));
+    handshake_buffer_size_ = bytes_in_read_buffer;
+  }
+  size_t offset = 0;
+  while (args_->read_buffer->count > 0) {
+    grpc_slice* next_slice = grpc_slice_buffer_peek_first(args_->read_buffer);
+    memcpy(handshake_buffer_ + offset, GRPC_SLICE_START_PTR(*next_slice),
+           GRPC_SLICE_LENGTH(*next_slice));
+    offset += GRPC_SLICE_LENGTH(*next_slice);
+    grpc_slice_buffer_remove_first(args_->read_buffer);
+  }
+  return bytes_in_read_buffer;
+}
+
+// Set args_ fields to NULL, saving the endpoint and read buffer for
+// later destruction.
+void SecurityHandshaker::CleanupArgsForFailureLocked() {
+  endpoint_to_destroy_ = args_->endpoint;
+  args_->endpoint = nullptr;
+  read_buffer_to_destroy_ = args_->read_buffer;
+  args_->read_buffer = nullptr;
+  grpc_channel_args_destroy(args_->args);
+  args_->args = nullptr;
+}
+
+// If the handshake failed or we're shutting down, clean up and invoke the
+// callback with the error.
+void SecurityHandshaker::HandshakeFailedLocked(grpc_error* error) {
+  if (error == GRPC_ERROR_NONE) {
+    // If we were shut down after the handshake succeeded but before an
+    // endpoint callback was invoked, we need to generate our own error.
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshaker shutdown");
+  }
+  const char* msg = grpc_error_string(error);
+  gpr_log(GPR_DEBUG, "Security handshake failed: %s", msg);
+
+  if (!is_shutdown_) {
+    tsi_handshaker_shutdown(handshaker_);
+    // TODO(ctiller): It is currently necessary to shutdown endpoints
+    // before destroying them, even if we know that there are no
+    // pending read/write callbacks.  This should be fixed, at which
+    // point this can be removed.
+    grpc_endpoint_shutdown(args_->endpoint, GRPC_ERROR_REF(error));
+    // Not shutting down, so the write failed.  Clean up before
+    // invoking the callback.
+    CleanupArgsForFailureLocked();
+    // Set shutdown to true so that subsequent calls to
+    // security_handshaker_shutdown() do nothing.
+    is_shutdown_ = true;
+  }
+  // Invoke callback.
+  ExecCtx::Run(DEBUG_LOCATION, on_handshake_done_, error);
+}
+
+void SecurityHandshaker::OnPeerCheckedInner(grpc_error* error) {
+  MutexLock lock(&mu_);
+  if (error != GRPC_ERROR_NONE || is_shutdown_) {
+    HandshakeFailedLocked(error);
+    return;
+  }
+  // Create zero-copy frame protector, if implemented.
+  tsi_zero_copy_grpc_protector* zero_copy_protector = nullptr;
+  tsi_result result = tsi_handshaker_result_create_zero_copy_grpc_protector(
+      handshaker_result_, max_frame_size_ == 0 ? nullptr : &max_frame_size_,
+      &zero_copy_protector);
+  if (result != TSI_OK && result != TSI_UNIMPLEMENTED) {
+    error = grpc_set_tsi_error_result(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "Zero-copy frame protector creation failed"),
+        result);
+    HandshakeFailedLocked(error);
+    return;
+  }
+  // Create frame protector if zero-copy frame protector is NULL.
+  tsi_frame_protector* protector = nullptr;
+  if (zero_copy_protector == nullptr) {
+    result = tsi_handshaker_result_create_frame_protector(
+        handshaker_result_, max_frame_size_ == 0 ? nullptr : &max_frame_size_,
+        &protector);
+    if (result != TSI_OK) {
+      error = grpc_set_tsi_error_result(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                            "Frame protector creation failed"),
+                                        result);
+      HandshakeFailedLocked(error);
+      return;
+    }
+  }
+  // Get unused bytes.
+  const unsigned char* unused_bytes = nullptr;
+  size_t unused_bytes_size = 0;
+  result = tsi_handshaker_result_get_unused_bytes(
+      handshaker_result_, &unused_bytes, &unused_bytes_size);
+  // Create secure endpoint.
+  if (unused_bytes_size > 0) {
+    grpc_slice slice =
+        grpc_slice_from_copied_buffer((char*)unused_bytes, unused_bytes_size);
+    args_->endpoint = grpc_secure_endpoint_create(
+        protector, zero_copy_protector, args_->endpoint, &slice, 1);
+    grpc_slice_unref_internal(slice);
+  } else {
+    args_->endpoint = grpc_secure_endpoint_create(
+        protector, zero_copy_protector, args_->endpoint, nullptr, 0);
+  }
+  tsi_handshaker_result_destroy(handshaker_result_);
+  handshaker_result_ = nullptr;
+  // Add auth context to channel args.
+  grpc_arg auth_context_arg = grpc_auth_context_to_arg(auth_context_.get());
+  grpc_channel_args* tmp_args = args_->args;
+  args_->args = grpc_channel_args_copy_and_add(tmp_args, &auth_context_arg, 1);
+  grpc_channel_args_destroy(tmp_args);
+  // Invoke callback.
+  ExecCtx::Run(DEBUG_LOCATION, on_handshake_done_, GRPC_ERROR_NONE);
+  // Set shutdown to true so that subsequent calls to
+  // security_handshaker_shutdown() do nothing.
+  is_shutdown_ = true;
+}
+
+void SecurityHandshaker::OnPeerCheckedFn(void* arg, grpc_error* error) {
+  RefCountedPtr<SecurityHandshaker>(static_cast<SecurityHandshaker*>(arg))
+      ->OnPeerCheckedInner(GRPC_ERROR_REF(error));
+}
+
+grpc_error* SecurityHandshaker::CheckPeerLocked() {
+  tsi_peer peer;
+  tsi_result result =
+      tsi_handshaker_result_extract_peer(handshaker_result_, &peer);
+  if (result != TSI_OK) {
+    return grpc_set_tsi_error_result(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Peer extraction failed"), result);
+  }
+  connector_->check_peer(peer, args_->endpoint, &auth_context_,
+                         &on_peer_checked_);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* SecurityHandshaker::OnHandshakeNextDoneLocked(
+    tsi_result result, const unsigned char* bytes_to_send,
+    size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  // Handshaker was shutdown.
+  if (is_shutdown_) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshaker shutdown");
+  }
+  // Read more if we need to.
+  if (result == TSI_INCOMPLETE_DATA) {
+    GPR_ASSERT(bytes_to_send_size == 0);
+    grpc_endpoint_read(
+        args_->endpoint, args_->read_buffer,
+        GRPC_CLOSURE_INIT(
+            &on_handshake_data_received_from_peer_,
+            &SecurityHandshaker::OnHandshakeDataReceivedFromPeerFnScheduler,
+            this, grpc_schedule_on_exec_ctx),
+        /*urgent=*/true);
+    return error;
+  }
+  if (result != TSI_OK) {
+    return grpc_set_tsi_error_result(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshake failed"), result);
+  }
+  // Update handshaker result.
+  if (handshaker_result != nullptr) {
+    GPR_ASSERT(handshaker_result_ == nullptr);
+    handshaker_result_ = handshaker_result;
+  }
+  if (bytes_to_send_size > 0) {
+    // Send data to peer, if needed.
+    grpc_slice to_send = grpc_slice_from_copied_buffer(
+        reinterpret_cast<const char*>(bytes_to_send), bytes_to_send_size);
+    grpc_slice_buffer_reset_and_unref_internal(&outgoing_);
+    grpc_slice_buffer_add(&outgoing_, to_send);
+    grpc_endpoint_write(
+        args_->endpoint, &outgoing_,
+        GRPC_CLOSURE_INIT(
+            &on_handshake_data_sent_to_peer_,
+            &SecurityHandshaker::OnHandshakeDataSentToPeerFnScheduler, this,
+            grpc_schedule_on_exec_ctx),
+        nullptr);
+  } else if (handshaker_result == nullptr) {
+    // There is nothing to send, but need to read from peer.
+    grpc_endpoint_read(
+        args_->endpoint, args_->read_buffer,
+        GRPC_CLOSURE_INIT(
+            &on_handshake_data_received_from_peer_,
+            &SecurityHandshaker::OnHandshakeDataReceivedFromPeerFnScheduler,
+            this, grpc_schedule_on_exec_ctx),
+        /*urgent=*/true);
+  } else {
+    // Handshake has finished, check peer and so on.
+    error = CheckPeerLocked();
+  }
+  return error;
+}
+
+void SecurityHandshaker::OnHandshakeNextDoneGrpcWrapper(
+    tsi_result result, void* user_data, const unsigned char* bytes_to_send,
+    size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result) {
+  RefCountedPtr<SecurityHandshaker> h(
+      static_cast<SecurityHandshaker*>(user_data));
+  MutexLock lock(&h->mu_);
+  grpc_error* error = h->OnHandshakeNextDoneLocked(
+      result, bytes_to_send, bytes_to_send_size, handshaker_result);
+  if (error != GRPC_ERROR_NONE) {
+    h->HandshakeFailedLocked(error);
+  } else {
+    h.release();  // Avoid unref
+  }
+}
+
+grpc_error* SecurityHandshaker::DoHandshakerNextLocked(
+    const unsigned char* bytes_received, size_t bytes_received_size) {
+  // Invoke TSI handshaker.
+  const unsigned char* bytes_to_send = nullptr;
+  size_t bytes_to_send_size = 0;
+  tsi_handshaker_result* hs_result = nullptr;
+  tsi_result result = tsi_handshaker_next(
+      handshaker_, bytes_received, bytes_received_size, &bytes_to_send,
+      &bytes_to_send_size, &hs_result, &OnHandshakeNextDoneGrpcWrapper, this);
+  if (result == TSI_ASYNC) {
+    // Handshaker operating asynchronously. Nothing else to do here;
+    // callback will be invoked in a TSI thread.
+    return GRPC_ERROR_NONE;
+  }
+  // Handshaker returned synchronously. Invoke callback directly in
+  // this thread with our existing exec_ctx.
+  return OnHandshakeNextDoneLocked(result, bytes_to_send, bytes_to_send_size,
+                                   hs_result);
+}
+
+// This callback might be run inline while we are still holding on to the mutex,
+// so schedule OnHandshakeDataReceivedFromPeerFn on ExecCtx to avoid a deadlock.
+void SecurityHandshaker::OnHandshakeDataReceivedFromPeerFnScheduler(
+    void* arg, grpc_error* error) {
+  SecurityHandshaker* h = static_cast<SecurityHandshaker*>(arg);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      GRPC_CLOSURE_INIT(&h->on_handshake_data_received_from_peer_,
+                        &SecurityHandshaker::OnHandshakeDataReceivedFromPeerFn,
+                        h, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_REF(error));
+}
+
+void SecurityHandshaker::OnHandshakeDataReceivedFromPeerFn(void* arg,
+                                                           grpc_error* error) {
+  RefCountedPtr<SecurityHandshaker> h(static_cast<SecurityHandshaker*>(arg));
+  MutexLock lock(&h->mu_);
+  if (error != GRPC_ERROR_NONE || h->is_shutdown_) {
+    h->HandshakeFailedLocked(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Handshake read failed", &error, 1));
+    return;
+  }
+  // Copy all slices received.
+  size_t bytes_received_size = h->MoveReadBufferIntoHandshakeBuffer();
+  // Call TSI handshaker.
+  error = h->DoHandshakerNextLocked(h->handshake_buffer_, bytes_received_size);
+
+  if (error != GRPC_ERROR_NONE) {
+    h->HandshakeFailedLocked(error);
+  } else {
+    h.release();  // Avoid unref
+  }
+}
+
+// This callback might be run inline while we are still holding on to the mutex,
+// so schedule OnHandshakeDataSentToPeerFn on ExecCtx to avoid a deadlock.
+void SecurityHandshaker::OnHandshakeDataSentToPeerFnScheduler(
+    void* arg, grpc_error* error) {
+  SecurityHandshaker* h = static_cast<SecurityHandshaker*>(arg);
+  grpc_core::ExecCtx::Run(
+      DEBUG_LOCATION,
+      GRPC_CLOSURE_INIT(&h->on_handshake_data_sent_to_peer_,
+                        &SecurityHandshaker::OnHandshakeDataSentToPeerFn, h,
+                        grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_REF(error));
+}
+
+void SecurityHandshaker::OnHandshakeDataSentToPeerFn(void* arg,
+                                                     grpc_error* error) {
+  RefCountedPtr<SecurityHandshaker> h(static_cast<SecurityHandshaker*>(arg));
+  MutexLock lock(&h->mu_);
+  if (error != GRPC_ERROR_NONE || h->is_shutdown_) {
+    h->HandshakeFailedLocked(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Handshake write failed", &error, 1));
+    return;
+  }
+  // We may be done.
+  if (h->handshaker_result_ == nullptr) {
+    grpc_endpoint_read(
+        h->args_->endpoint, h->args_->read_buffer,
+        GRPC_CLOSURE_INIT(
+            &h->on_handshake_data_received_from_peer_,
+            &SecurityHandshaker::OnHandshakeDataReceivedFromPeerFnScheduler,
+            h.get(), grpc_schedule_on_exec_ctx),
+        /*urgent=*/true);
+  } else {
+    error = h->CheckPeerLocked();
+    if (error != GRPC_ERROR_NONE) {
+      h->HandshakeFailedLocked(error);
+      return;
+    }
+  }
+  h.release();  // Avoid unref
+}
+
+//
+// public handshaker API
+//
+
+void SecurityHandshaker::Shutdown(grpc_error* why) {
+  MutexLock lock(&mu_);
+  if (!is_shutdown_) {
+    is_shutdown_ = true;
+    tsi_handshaker_shutdown(handshaker_);
+    grpc_endpoint_shutdown(args_->endpoint, GRPC_ERROR_REF(why));
+    CleanupArgsForFailureLocked();
+  }
+  GRPC_ERROR_UNREF(why);
+}
+
+void SecurityHandshaker::DoHandshake(grpc_tcp_server_acceptor* /*acceptor*/,
+                                     grpc_closure* on_handshake_done,
+                                     HandshakerArgs* args) {
+  auto ref = Ref();
+  MutexLock lock(&mu_);
+  args_ = args;
+  on_handshake_done_ = on_handshake_done;
+  size_t bytes_received_size = MoveReadBufferIntoHandshakeBuffer();
+  grpc_error* error =
+      DoHandshakerNextLocked(handshake_buffer_, bytes_received_size);
+  if (error != GRPC_ERROR_NONE) {
+    HandshakeFailedLocked(error);
+  } else {
+    ref.release();  // Avoid unref
+  }
+}
+
+//
+// FailHandshaker
+//
+
+class FailHandshaker : public Handshaker {
+ public:
+  const char* name() const override { return "security_fail"; }
+  void Shutdown(grpc_error* why) override { GRPC_ERROR_UNREF(why); }
+  void DoHandshake(grpc_tcp_server_acceptor* /*acceptor*/,
+                   grpc_closure* on_handshake_done,
+                   HandshakerArgs* /*args*/) override {
+    ExecCtx::Run(DEBUG_LOCATION, on_handshake_done,
+                 GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                     "Failed to create security handshaker"));
+  }
+
+ private:
+  virtual ~FailHandshaker() = default;
+};
+
+//
+// handshaker factories
+//
+
+class ClientSecurityHandshakerFactory : public HandshakerFactory {
+ public:
+  void AddHandshakers(const grpc_channel_args* args,
+                      grpc_pollset_set* interested_parties,
+                      HandshakeManager* handshake_mgr) override {
+    auto* security_connector =
+        reinterpret_cast<grpc_channel_security_connector*>(
+            grpc_security_connector_find_in_args(args));
+    if (security_connector) {
+      security_connector->add_handshakers(args, interested_parties,
+                                          handshake_mgr);
+    }
+  }
+  ~ClientSecurityHandshakerFactory() override = default;
+};
+
+class ServerSecurityHandshakerFactory : public HandshakerFactory {
+ public:
+  void AddHandshakers(const grpc_channel_args* args,
+                      grpc_pollset_set* interested_parties,
+                      HandshakeManager* handshake_mgr) override {
+    auto* security_connector =
+        reinterpret_cast<grpc_server_security_connector*>(
+            grpc_security_connector_find_in_args(args));
+    if (security_connector) {
+      security_connector->add_handshakers(args, interested_parties,
+                                          handshake_mgr);
+    }
+  }
+  ~ServerSecurityHandshakerFactory() override = default;
+};
+
+}  // namespace
+
+//
+// exported functions
+//
+
+RefCountedPtr<Handshaker> SecurityHandshakerCreate(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args) {
+  // If no TSI handshaker was created, return a handshaker that always fails.
+  // Otherwise, return a real security handshaker.
+  if (handshaker == nullptr) {
+    return MakeRefCounted<FailHandshaker>();
+  } else {
+    return MakeRefCounted<SecurityHandshaker>(handshaker, connector, args);
+  }
+}
+
+void SecurityRegisterHandshakerFactories() {
+  HandshakerRegistry::RegisterHandshakerFactory(
+      false /* at_start */, HANDSHAKER_CLIENT,
+      absl::make_unique<ClientSecurityHandshakerFactory>());
+  HandshakerRegistry::RegisterHandshakerFactory(
+      false /* at_start */, HANDSHAKER_SERVER,
+      absl::make_unique<ServerSecurityHandshakerFactory>());
+}
+
+}  // namespace grpc_core
+
+grpc_handshaker* grpc_security_handshaker_create(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args) {
+  return SecurityHandshakerCreate(handshaker, connector, args).release();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.h
new file mode 100644
index 0000000..a9e1fe8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/security_handshaker.h	
@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+
+namespace grpc_core {
+
+/// Creates a security handshaker using \a handshaker.
+RefCountedPtr<Handshaker> SecurityHandshakerCreate(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args);
+
+/// Registers security handshaker factories.
+void SecurityRegisterHandshakerFactories();
+
+}  // namespace grpc_core
+
+// TODO(arjunroy): This is transitional to account for the new handshaker API
+// and will eventually be removed entirely.
+grpc_handshaker* grpc_security_handshaker_create(
+    tsi_handshaker* handshaker, grpc_security_connector* connector,
+    const grpc_channel_args* args);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURITY_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/server_auth_filter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/server_auth_filter.cc
new file mode 100644
index 0000000..6f83a17
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/server_auth_filter.cc	
@@ -0,0 +1,326 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/transport/auth_filters.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+static void recv_initial_metadata_ready(void* arg, grpc_error* error);
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* error);
+
+namespace {
+enum async_state {
+  STATE_INIT = 0,
+  STATE_DONE,
+  STATE_CANCELLED,
+};
+
+struct channel_data {
+  channel_data(grpc_auth_context* auth_context, grpc_server_credentials* creds)
+      : auth_context(auth_context->Ref()), creds(creds->Ref()) {}
+  ~channel_data() { auth_context.reset(DEBUG_LOCATION, "server_auth_filter"); }
+
+  grpc_core::RefCountedPtr<grpc_auth_context> auth_context;
+  grpc_core::RefCountedPtr<grpc_server_credentials> creds;
+};
+
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : call_combiner(args.call_combiner), owning_call(args.call_stack) {
+    GRPC_CLOSURE_INIT(&recv_initial_metadata_ready,
+                      ::recv_initial_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready,
+                      ::recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    // Create server security context.  Set its auth context from channel
+    // data and save it in the call context.
+    grpc_server_security_context* server_ctx =
+        grpc_server_security_context_create(args.arena);
+    channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+    server_ctx->auth_context =
+        chand->auth_context->Ref(DEBUG_LOCATION, "server_auth_filter");
+    if (args.context[GRPC_CONTEXT_SECURITY].value != nullptr) {
+      args.context[GRPC_CONTEXT_SECURITY].destroy(
+          args.context[GRPC_CONTEXT_SECURITY].value);
+    }
+    args.context[GRPC_CONTEXT_SECURITY].value = server_ctx;
+    args.context[GRPC_CONTEXT_SECURITY].destroy =
+        grpc_server_security_context_destroy;
+  }
+
+  ~call_data() { GRPC_ERROR_UNREF(recv_initial_metadata_error); }
+
+  grpc_core::CallCombiner* call_combiner;
+  grpc_call_stack* owning_call;
+  grpc_transport_stream_op_batch* recv_initial_metadata_batch;
+  grpc_closure* original_recv_initial_metadata_ready;
+  grpc_closure recv_initial_metadata_ready;
+  grpc_error* recv_initial_metadata_error = GRPC_ERROR_NONE;
+  grpc_closure recv_trailing_metadata_ready;
+  grpc_closure* original_recv_trailing_metadata_ready;
+  grpc_error* recv_trailing_metadata_error;
+  bool seen_recv_trailing_metadata_ready = false;
+  grpc_metadata_array md;
+  const grpc_metadata* consumed_md;
+  size_t num_consumed_md;
+  grpc_closure cancel_closure;
+  gpr_atm state = STATE_INIT;  // async_state
+};
+
+}  // namespace
+
+static grpc_metadata_array metadata_batch_to_md_array(
+    const grpc_metadata_batch* batch) {
+  grpc_linked_mdelem* l;
+  grpc_metadata_array result;
+  grpc_metadata_array_init(&result);
+  for (l = batch->list.head; l != nullptr; l = l->next) {
+    grpc_metadata* usr_md = nullptr;
+    grpc_mdelem md = l->md;
+    grpc_slice key = GRPC_MDKEY(md);
+    grpc_slice value = GRPC_MDVALUE(md);
+    if (result.count == result.capacity) {
+      result.capacity = GPR_MAX(result.capacity + 8, result.capacity * 2);
+      result.metadata = static_cast<grpc_metadata*>(gpr_realloc(
+          result.metadata, result.capacity * sizeof(grpc_metadata)));
+    }
+    usr_md = &result.metadata[result.count++];
+    usr_md->key = grpc_slice_ref_internal(key);
+    usr_md->value = grpc_slice_ref_internal(value);
+  }
+  return result;
+}
+
+static grpc_filtered_mdelem remove_consumed_md(void* user_data,
+                                               grpc_mdelem md) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  size_t i;
+  for (i = 0; i < calld->num_consumed_md; i++) {
+    const grpc_metadata* consumed_md = &calld->consumed_md[i];
+    if (grpc_slice_eq(GRPC_MDKEY(md), consumed_md->key) &&
+        grpc_slice_eq(GRPC_MDVALUE(md), consumed_md->value))
+      return GRPC_FILTERED_REMOVE();
+  }
+  return GRPC_FILTERED_MDELEM(md);
+}
+
+static void on_md_processing_done_inner(grpc_call_element* elem,
+                                        const grpc_metadata* consumed_md,
+                                        size_t num_consumed_md,
+                                        const grpc_metadata* response_md,
+                                        size_t num_response_md,
+                                        grpc_error* error) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_transport_stream_op_batch* batch = calld->recv_initial_metadata_batch;
+  /* TODO(jboeuf): Implement support for response_md. */
+  if (response_md != nullptr && num_response_md > 0) {
+    gpr_log(GPR_INFO,
+            "response_md in auth metadata processing not supported for now. "
+            "Ignoring...");
+  }
+  if (error == GRPC_ERROR_NONE) {
+    calld->consumed_md = consumed_md;
+    calld->num_consumed_md = num_consumed_md;
+    error = grpc_metadata_batch_filter(
+        batch->payload->recv_initial_metadata.recv_initial_metadata,
+        remove_consumed_md, elem, "Response metadata filtering error");
+  }
+  calld->recv_initial_metadata_error = GRPC_ERROR_REF(error);
+  grpc_closure* closure = calld->original_recv_initial_metadata_ready;
+  calld->original_recv_initial_metadata_ready = nullptr;
+  if (calld->seen_recv_trailing_metadata_ready) {
+    GRPC_CALL_COMBINER_START(calld->call_combiner,
+                             &calld->recv_trailing_metadata_ready,
+                             calld->recv_trailing_metadata_error,
+                             "continue recv_trailing_metadata_ready");
+  }
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, error);
+}
+
+// Called from application code.
+static void on_md_processing_done(
+    void* user_data, const grpc_metadata* consumed_md, size_t num_consumed_md,
+    const grpc_metadata* response_md, size_t num_response_md,
+    grpc_status_code status, const char* error_details) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  // If the call was not cancelled while we were in flight, process the result.
+  if (gpr_atm_full_cas(&calld->state, static_cast<gpr_atm>(STATE_INIT),
+                       static_cast<gpr_atm>(STATE_DONE))) {
+    grpc_error* error = GRPC_ERROR_NONE;
+    if (status != GRPC_STATUS_OK) {
+      if (error_details == nullptr) {
+        error_details = "Authentication metadata processing failed.";
+      }
+      error = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_details),
+          GRPC_ERROR_INT_GRPC_STATUS, status);
+    }
+    on_md_processing_done_inner(elem, consumed_md, num_consumed_md, response_md,
+                                num_response_md, error);
+  }
+  // Clean up.
+  for (size_t i = 0; i < calld->md.count; i++) {
+    grpc_slice_unref_internal(calld->md.metadata[i].key);
+    grpc_slice_unref_internal(calld->md.metadata[i].value);
+  }
+  grpc_metadata_array_destroy(&calld->md);
+  GRPC_CALL_STACK_UNREF(calld->owning_call, "server_auth_metadata");
+}
+
+static void cancel_call(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  // If the result was not already processed, invoke the callback now.
+  if (error != GRPC_ERROR_NONE &&
+      gpr_atm_full_cas(&calld->state, static_cast<gpr_atm>(STATE_INIT),
+                       static_cast<gpr_atm>(STATE_CANCELLED))) {
+    on_md_processing_done_inner(elem, nullptr, 0, nullptr, 0,
+                                GRPC_ERROR_REF(error));
+  }
+}
+
+static void recv_initial_metadata_ready(void* arg, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(arg);
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_transport_stream_op_batch* batch = calld->recv_initial_metadata_batch;
+  if (error == GRPC_ERROR_NONE) {
+    if (chand->creds != nullptr &&
+        chand->creds->auth_metadata_processor().process != nullptr) {
+      // We're calling out to the application, so we need to make sure
+      // to drop the call combiner early if we get cancelled.
+      GRPC_CLOSURE_INIT(&calld->cancel_closure, cancel_call, elem,
+                        grpc_schedule_on_exec_ctx);
+      calld->call_combiner->SetNotifyOnCancel(&calld->cancel_closure);
+      GRPC_CALL_STACK_REF(calld->owning_call, "server_auth_metadata");
+      calld->md = metadata_batch_to_md_array(
+          batch->payload->recv_initial_metadata.recv_initial_metadata);
+      chand->creds->auth_metadata_processor().process(
+          chand->creds->auth_metadata_processor().state,
+          chand->auth_context.get(), calld->md.metadata, calld->md.count,
+          on_md_processing_done, elem);
+      return;
+    }
+  }
+  grpc_closure* closure = calld->original_recv_initial_metadata_ready;
+  calld->original_recv_initial_metadata_ready = nullptr;
+  if (calld->seen_recv_trailing_metadata_ready) {
+    GRPC_CALL_COMBINER_START(calld->call_combiner,
+                             &calld->recv_trailing_metadata_ready,
+                             calld->recv_trailing_metadata_error,
+                             "continue recv_trailing_metadata_ready");
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, closure, GRPC_ERROR_REF(error));
+}
+
+static void recv_trailing_metadata_ready(void* user_data, grpc_error* err) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->original_recv_initial_metadata_ready != nullptr) {
+    calld->recv_trailing_metadata_error = GRPC_ERROR_REF(err);
+    calld->seen_recv_trailing_metadata_ready = true;
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner,
+                            "deferring recv_trailing_metadata_ready until "
+                            "after recv_initial_metadata_ready");
+    return;
+  }
+  err = grpc_error_add_child(
+      GRPC_ERROR_REF(err), GRPC_ERROR_REF(calld->recv_initial_metadata_error));
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_trailing_metadata_ready, err);
+}
+
+static void server_auth_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* batch) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (batch->recv_initial_metadata) {
+    // Inject our callback.
+    calld->recv_initial_metadata_batch = batch;
+    calld->original_recv_initial_metadata_ready =
+        batch->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    batch->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->recv_initial_metadata_ready;
+  }
+  if (batch->recv_trailing_metadata) {
+    calld->original_recv_trailing_metadata_ready =
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &calld->recv_trailing_metadata_ready;
+  }
+  grpc_call_next_op(elem, batch);
+}
+
+/* Constructor for call_data */
+static grpc_error* server_auth_init_call_elem(
+    grpc_call_element* elem, const grpc_call_element_args* args) {
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data */
+static void server_auth_destroy_call_elem(
+    grpc_call_element* elem, const grpc_call_final_info* /*final_info*/,
+    grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->~call_data();
+}
+
+/* Constructor for channel_data */
+static grpc_error* server_auth_init_channel_elem(
+    grpc_channel_element* elem, grpc_channel_element_args* args) {
+  GPR_ASSERT(!args->is_last);
+  grpc_auth_context* auth_context =
+      grpc_find_auth_context_in_args(args->channel_args);
+  GPR_ASSERT(auth_context != nullptr);
+  grpc_server_credentials* creds =
+      grpc_find_server_credentials_in_args(args->channel_args);
+  new (elem->channel_data) channel_data(auth_context, creds);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel data */
+static void server_auth_destroy_channel_elem(grpc_channel_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  chand->~channel_data();
+}
+
+const grpc_channel_filter grpc_server_auth_filter = {
+    server_auth_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    server_auth_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    server_auth_destroy_call_elem,
+    sizeof(channel_data),
+    server_auth_init_channel_elem,
+    server_auth_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "server-auth"};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.cc
new file mode 100644
index 0000000..1eeb557
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.cc	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+
+// Channel arg key for the mapping of target addresses to their authorities.
+#define GRPC_ARG_TARGET_AUTHORITY_TABLE "grpc.target_authority_table"
+
+namespace grpc_core {
+namespace {
+
+void* target_authority_table_copy(void* p) {
+  TargetAuthorityTable* table = static_cast<TargetAuthorityTable*>(p);
+  // TODO(roth): When channel_args are converted to C++, pass the
+  // RefCountedPtr<> directly instead of managing the ref manually.
+  table->Ref().release();
+  return p;
+}
+void target_authority_table_destroy(void* p) {
+  TargetAuthorityTable* table = static_cast<TargetAuthorityTable*>(p);
+  table->Unref();
+}
+int target_authority_table_cmp(void* a, void* b) {
+  return TargetAuthorityTable::Cmp(
+      *static_cast<const TargetAuthorityTable*>(a),
+      *static_cast<const TargetAuthorityTable*>(b));
+}
+const grpc_arg_pointer_vtable target_authority_table_arg_vtable = {
+    target_authority_table_copy, target_authority_table_destroy,
+    target_authority_table_cmp};
+
+}  // namespace
+
+grpc_arg CreateTargetAuthorityTableChannelArg(TargetAuthorityTable* table) {
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_TARGET_AUTHORITY_TABLE,
+                                         table,
+                                         &target_authority_table_arg_vtable);
+}
+
+TargetAuthorityTable* FindTargetAuthorityTableInArgs(
+    const grpc_channel_args* args) {
+  const grpc_arg* arg =
+      grpc_channel_args_find(args, GRPC_ARG_TARGET_AUTHORITY_TABLE);
+  if (arg != nullptr) {
+    if (arg->type == GRPC_ARG_POINTER) {
+      return static_cast<TargetAuthorityTable*>(arg->value.pointer.p);
+    } else {
+      gpr_log(GPR_ERROR, "value of " GRPC_ARG_TARGET_AUTHORITY_TABLE
+                         " channel arg was not pointer type; ignoring");
+    }
+  }
+  return nullptr;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.h
new file mode 100644
index 0000000..10ed66f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/target_authority_table.h	
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_hash_table.h"
+
+namespace grpc_core {
+
+/// A hash table mapping target addresses to authorities.
+typedef SliceHashTable<grpc_core::UniquePtr<char>> TargetAuthorityTable;
+
+/// Returns a channel argument containing \a table.
+grpc_arg CreateTargetAuthorityTableChannelArg(TargetAuthorityTable* table);
+
+/// Returns the target authority table from \a args or nullptr.
+TargetAuthorityTable* FindTargetAuthorityTableInArgs(
+    const grpc_channel_args* args);
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_TARGET_AUTHORITY_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.cc
new file mode 100644
index 0000000..f78bb8d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.cc	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/security/transport/tsi_error.h"
+
+grpc_error* grpc_set_tsi_error_result(grpc_error* error, tsi_result result) {
+  return grpc_error_set_int(
+      grpc_error_set_str(
+          error, GRPC_ERROR_STR_TSI_ERROR,
+          grpc_slice_from_static_string(tsi_result_to_string(result))),
+      GRPC_ERROR_INT_TSI_CODE, result);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.h
new file mode 100644
index 0000000..16e04f7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/transport/tsi_error.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H
+#define GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+grpc_error* grpc_set_tsi_error_result(grpc_error* error, tsi_result result);
+
+#endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.cc
new file mode 100644
index 0000000..458f805
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.cc	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/security/util/json_util.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+const char* grpc_json_get_string_property(const grpc_core::Json& json,
+                                          const char* prop_name,
+                                          grpc_error** error) {
+  if (json.type() != grpc_core::Json::Type::OBJECT) {
+    if (error != nullptr) {
+      *error =
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("JSON value is not an object");
+    }
+    return nullptr;
+  }
+  auto it = json.object_value().find(prop_name);
+  if (it == json.object_value().end()) {
+    if (error != nullptr) {
+      char* error_msg;
+      gpr_asprintf(&error_msg, "Property %s not found in JSON object.",
+                   prop_name);
+      *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+      gpr_free(error_msg);
+    }
+    return nullptr;
+  }
+  if (it->second.type() != grpc_core::Json::Type::STRING) {
+    if (error != nullptr) {
+      char* error_msg;
+      gpr_asprintf(&error_msg, "Property %s in JSON object is not a string.",
+                   prop_name);
+      *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+      gpr_free(error_msg);
+    }
+    return nullptr;
+  }
+  return it->second.string_value().c_str();
+}
+
+bool grpc_copy_json_string_property(const grpc_core::Json& json,
+                                    const char* prop_name,
+                                    char** copied_value) {
+  grpc_error* error = GRPC_ERROR_NONE;
+  const char* prop_value =
+      grpc_json_get_string_property(json, prop_name, &error);
+  GRPC_LOG_IF_ERROR("Could not copy JSON property", error);
+  if (prop_value == nullptr) return false;
+  *copied_value = gpr_strdup(prop_value);
+  return true;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.h
new file mode 100644
index 0000000..42f7005
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/security/util/json_util.h	
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H
+#define GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/json/json.h"
+
+// Constants.
+#define GRPC_AUTH_JSON_TYPE_INVALID "invalid"
+#define GRPC_AUTH_JSON_TYPE_SERVICE_ACCOUNT "service_account"
+#define GRPC_AUTH_JSON_TYPE_AUTHORIZED_USER "authorized_user"
+
+// Gets a child property from a json node.
+const char* grpc_json_get_string_property(const grpc_core::Json& json,
+                                          const char* prop_name,
+                                          grpc_error** error);
+
+// Copies the value of the json child property specified by prop_name.
+// Returns false if the property was not found.
+bool grpc_copy_json_string_property(const grpc_core::Json& json,
+                                    const char* prop_name, char** copied_value);
+
+#endif /* GRPC_CORE_LIB_SECURITY_UTIL_JSON_UTIL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.cc
new file mode 100644
index 0000000..0a06a05
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.cc	
@@ -0,0 +1,239 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/b64.h"
+
+#include <stdint.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/* --- Constants. --- */
+
+static const int8_t base64_bytes[] = {
+    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+    -1,   -1,   -1,   -1,   -1,   -1,   -1,   0x3E, -1,   -1,   -1,   0x3F,
+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, -1,   -1,
+    -1,   0x7F, -1,   -1,   -1,   0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12,
+    0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, -1,   -1,   -1,   -1,   -1,
+    -1,   0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24,
+    0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,
+    0x31, 0x32, 0x33, -1,   -1,   -1,   -1,   -1};
+
+static const char base64_url_unsafe_chars[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static const char base64_url_safe_chars[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+
+#define GRPC_BASE64_PAD_CHAR '='
+#define GRPC_BASE64_PAD_BYTE 0x7F
+#define GRPC_BASE64_MULTILINE_LINE_LEN 76
+#define GRPC_BASE64_MULTILINE_NUM_BLOCKS (GRPC_BASE64_MULTILINE_LINE_LEN / 4)
+
+/* --- base64 functions. --- */
+
+char* grpc_base64_encode(const void* vdata, size_t data_size, int url_safe,
+                         int multiline) {
+  size_t result_projected_size =
+      grpc_base64_estimate_encoded_size(data_size, multiline);
+  char* result = static_cast<char*>(gpr_malloc(result_projected_size));
+  grpc_base64_encode_core(result, vdata, data_size, url_safe, multiline);
+  return result;
+}
+
+size_t grpc_base64_estimate_encoded_size(size_t data_size, int multiline) {
+  size_t result_projected_size =
+      4 * ((data_size + 3) / 3) +
+      2 * (multiline ? (data_size / (3 * GRPC_BASE64_MULTILINE_NUM_BLOCKS))
+                     : 0) +
+      1;
+  return result_projected_size;
+}
+
+void grpc_base64_encode_core(char* result, const void* vdata, size_t data_size,
+                             int url_safe, int multiline) {
+  const unsigned char* data = static_cast<const unsigned char*>(vdata);
+  const char* base64_chars =
+      url_safe ? base64_url_safe_chars : base64_url_unsafe_chars;
+  const size_t result_projected_size =
+      grpc_base64_estimate_encoded_size(data_size, multiline);
+
+  char* current = result;
+  size_t num_blocks = 0;
+  size_t i = 0;
+
+  /* Encode each block. */
+  while (data_size >= 3) {
+    *current++ = base64_chars[(data[i] >> 2) & 0x3F];
+    *current++ =
+        base64_chars[((data[i] & 0x03) << 4) | ((data[i + 1] >> 4) & 0x0F)];
+    *current++ =
+        base64_chars[((data[i + 1] & 0x0F) << 2) | ((data[i + 2] >> 6) & 0x03)];
+    *current++ = base64_chars[data[i + 2] & 0x3F];
+
+    data_size -= 3;
+    i += 3;
+    if (multiline && (++num_blocks == GRPC_BASE64_MULTILINE_NUM_BLOCKS)) {
+      *current++ = '\r';
+      *current++ = '\n';
+      num_blocks = 0;
+    }
+  }
+
+  /* Take care of the tail. */
+  if (data_size == 2) {
+    *current++ = base64_chars[(data[i] >> 2) & 0x3F];
+    *current++ =
+        base64_chars[((data[i] & 0x03) << 4) | ((data[i + 1] >> 4) & 0x0F)];
+    *current++ = base64_chars[(data[i + 1] & 0x0F) << 2];
+    *current++ = GRPC_BASE64_PAD_CHAR;
+  } else if (data_size == 1) {
+    *current++ = base64_chars[(data[i] >> 2) & 0x3F];
+    *current++ = base64_chars[(data[i] & 0x03) << 4];
+    *current++ = GRPC_BASE64_PAD_CHAR;
+    *current++ = GRPC_BASE64_PAD_CHAR;
+  }
+
+  GPR_ASSERT(current >= result);
+  GPR_ASSERT((uintptr_t)(current - result) < result_projected_size);
+  result[current - result] = '\0';
+}
+
+grpc_slice grpc_base64_decode(const char* b64, int url_safe) {
+  return grpc_base64_decode_with_len(b64, strlen(b64), url_safe);
+}
+
+static void decode_one_char(const unsigned char* codes, unsigned char* result,
+                            size_t* result_offset) {
+  uint32_t packed = (static_cast<uint32_t>(codes[0]) << 2) |
+                    (static_cast<uint32_t>(codes[1]) >> 4);
+  result[(*result_offset)++] = static_cast<unsigned char>(packed);
+}
+
+static void decode_two_chars(const unsigned char* codes, unsigned char* result,
+                             size_t* result_offset) {
+  uint32_t packed = (static_cast<uint32_t>(codes[0]) << 10) |
+                    (static_cast<uint32_t>(codes[1]) << 4) |
+                    (static_cast<uint32_t>(codes[2]) >> 2);
+  result[(*result_offset)++] = static_cast<unsigned char>(packed >> 8);
+  result[(*result_offset)++] = static_cast<unsigned char>(packed);
+}
+
+static int decode_group(const unsigned char* codes, size_t num_codes,
+                        unsigned char* result, size_t* result_offset) {
+  GPR_ASSERT(num_codes <= 4);
+
+  /* Short end groups that may not have padding. */
+  if (num_codes == 1) {
+    gpr_log(GPR_ERROR, "Invalid group. Must be at least 2 bytes.");
+    return 0;
+  }
+  if (num_codes == 2) {
+    decode_one_char(codes, result, result_offset);
+    return 1;
+  }
+  if (num_codes == 3) {
+    decode_two_chars(codes, result, result_offset);
+    return 1;
+  }
+
+  /* Regular 4 byte groups with padding or not. */
+  GPR_ASSERT(num_codes == 4);
+  if (codes[0] == GRPC_BASE64_PAD_BYTE || codes[1] == GRPC_BASE64_PAD_BYTE) {
+    gpr_log(GPR_ERROR, "Invalid padding detected.");
+    return 0;
+  }
+  if (codes[2] == GRPC_BASE64_PAD_BYTE) {
+    if (codes[3] == GRPC_BASE64_PAD_BYTE) {
+      decode_one_char(codes, result, result_offset);
+    } else {
+      gpr_log(GPR_ERROR, "Invalid padding detected.");
+      return 0;
+    }
+  } else if (codes[3] == GRPC_BASE64_PAD_BYTE) {
+    decode_two_chars(codes, result, result_offset);
+  } else {
+    /* No padding. */
+    uint32_t packed = (static_cast<uint32_t>(codes[0]) << 18) |
+                      (static_cast<uint32_t>(codes[1]) << 12) |
+                      (static_cast<uint32_t>(codes[2]) << 6) | codes[3];
+    result[(*result_offset)++] = static_cast<unsigned char>(packed >> 16);
+    result[(*result_offset)++] = static_cast<unsigned char>(packed >> 8);
+    result[(*result_offset)++] = static_cast<unsigned char>(packed);
+  }
+  return 1;
+}
+
+grpc_slice grpc_base64_decode_with_len(const char* b64, size_t b64_len,
+                                       int url_safe) {
+  grpc_slice result = GRPC_SLICE_MALLOC(b64_len);
+  unsigned char* current = GRPC_SLICE_START_PTR(result);
+  size_t result_size = 0;
+  unsigned char codes[4];
+  size_t num_codes = 0;
+
+  while (b64_len--) {
+    unsigned char c = static_cast<unsigned char>(*b64++);
+    signed char code;
+    if (c >= GPR_ARRAY_SIZE(base64_bytes)) continue;
+    if (url_safe) {
+      if (c == '+' || c == '/') {
+        gpr_log(GPR_ERROR, "Invalid character for url safe base64 %c", c);
+        goto fail;
+      }
+      if (c == '-') {
+        c = '+';
+      } else if (c == '_') {
+        c = '/';
+      }
+    }
+    code = base64_bytes[c];
+    if (code == -1) {
+      if (c != '\r' && c != '\n') {
+        gpr_log(GPR_ERROR, "Invalid character %c", c);
+        goto fail;
+      }
+    } else {
+      codes[num_codes++] = static_cast<unsigned char>(code);
+      if (num_codes == 4) {
+        if (!decode_group(codes, num_codes, current, &result_size)) goto fail;
+        num_codes = 0;
+      }
+    }
+  }
+
+  if (num_codes != 0 &&
+      !decode_group(codes, num_codes, current, &result_size)) {
+    goto fail;
+  }
+  GRPC_SLICE_SET_LENGTH(result, result_size);
+  return result;
+
+fail:
+  grpc_slice_unref_internal(result);
+  return grpc_empty_slice();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.h
new file mode 100644
index 0000000..65ba662
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/b64.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_B64_H
+#define GRPC_CORE_LIB_SLICE_B64_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+
+/* Encodes data using base64. It is the caller's responsibility to free
+   the returned char * using gpr_free. Returns NULL on NULL input.
+   TODO(makdharma) : change the flags to bool from int */
+char* grpc_base64_encode(const void* data, size_t data_size, int url_safe,
+                         int multiline);
+
+/* estimate the upper bound on size of base64 encoded data. The actual size
+ * is guaranteed to be less than or equal to the size returned here. */
+size_t grpc_base64_estimate_encoded_size(size_t data_size, int multiline);
+
+/* Encodes data using base64 and write it to memory pointed to by result. It is
+ * the caller's responsibility to allocate enough memory in |result| to fit the
+ * encoded data. */
+void grpc_base64_encode_core(char* result, const void* vdata, size_t data_size,
+                             int url_safe, int multiline);
+
+/* Decodes data according to the base64 specification. Returns an empty
+   slice in case of failure. */
+grpc_slice grpc_base64_decode(const char* b64, int url_safe);
+
+/* Same as above except that the length is provided by the caller. */
+grpc_slice grpc_base64_decode_with_len(const char* b64, size_t b64_len,
+                                       int url_safe);
+
+#endif /* GRPC_CORE_LIB_SLICE_B64_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.cc
new file mode 100644
index 0000000..79a4805
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.cc	
@@ -0,0 +1,169 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/percent_encoding.h"
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+
+const uint8_t grpc_url_percent_encoding_unreserved_bytes[256 / 8] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0xfe, 0xff, 0xff,
+    0x87, 0xfe, 0xff, 0xff, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const uint8_t grpc_compatible_percent_encoding_unreserved_bytes[256 / 8] = {
+    0x00, 0x00, 0x00, 0x00, 0xdf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+static bool is_unreserved_character(uint8_t c,
+                                    const uint8_t* unreserved_bytes) {
+  return ((unreserved_bytes[c / 8] >> (c % 8)) & 1) != 0;
+}
+
+grpc_slice grpc_percent_encode_slice(const grpc_slice& slice,
+                                     const uint8_t* unreserved_bytes) {
+  static const uint8_t hex[] = "0123456789ABCDEF";
+
+  // first pass: count the number of bytes needed to output this string
+  size_t output_length = 0;
+  const uint8_t* slice_start = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* slice_end = GRPC_SLICE_END_PTR(slice);
+  const uint8_t* p;
+  bool any_reserved_bytes = false;
+  for (p = slice_start; p < slice_end; p++) {
+    bool unres = is_unreserved_character(*p, unreserved_bytes);
+    output_length += unres ? 1 : 3;
+    any_reserved_bytes |= !unres;
+  }
+  // no unreserved bytes: return the string unmodified
+  if (!any_reserved_bytes) {
+    return grpc_slice_ref_internal(slice);
+  }
+  // second pass: actually encode
+  grpc_slice out = GRPC_SLICE_MALLOC(output_length);
+  uint8_t* q = GRPC_SLICE_START_PTR(out);
+  for (p = slice_start; p < slice_end; p++) {
+    if (is_unreserved_character(*p, unreserved_bytes)) {
+      *q++ = *p;
+    } else {
+      *q++ = '%';
+      *q++ = hex[*p >> 4];
+      *q++ = hex[*p & 15];
+    }
+  }
+  GPR_ASSERT(q == GRPC_SLICE_END_PTR(out));
+  return out;
+}
+
+static bool valid_hex(const uint8_t* p, const uint8_t* end) {
+  if (p >= end) return false;
+  return (*p >= '0' && *p <= '9') || (*p >= 'a' && *p <= 'f') ||
+         (*p >= 'A' && *p <= 'F');
+}
+
+static uint8_t dehex(uint8_t c) {
+  if (c >= '0' && c <= '9') return static_cast<uint8_t>(c - '0');
+  if (c >= 'A' && c <= 'F') return static_cast<uint8_t>(c - 'A' + 10);
+  if (c >= 'a' && c <= 'f') return static_cast<uint8_t>(c - 'a' + 10);
+  GPR_UNREACHABLE_CODE(return 255);
+}
+
+bool grpc_strict_percent_decode_slice(const grpc_slice& slice_in,
+                                      const uint8_t* unreserved_bytes,
+                                      grpc_slice* slice_out) {
+  const uint8_t* p = GRPC_SLICE_START_PTR(slice_in);
+  const uint8_t* in_end = GRPC_SLICE_END_PTR(slice_in);
+  size_t out_length = 0;
+  bool any_percent_encoded_stuff = false;
+  while (p != in_end) {
+    if (*p == '%') {
+      if (!valid_hex(++p, in_end)) return false;
+      if (!valid_hex(++p, in_end)) return false;
+      p++;
+      out_length++;
+      any_percent_encoded_stuff = true;
+    } else if (is_unreserved_character(*p, unreserved_bytes)) {
+      p++;
+      out_length++;
+    } else {
+      return false;
+    }
+  }
+  if (!any_percent_encoded_stuff) {
+    *slice_out = grpc_slice_ref_internal(slice_in);
+    return true;
+  }
+  p = GRPC_SLICE_START_PTR(slice_in);
+  *slice_out = GRPC_SLICE_MALLOC(out_length);
+  uint8_t* q = GRPC_SLICE_START_PTR(*slice_out);
+  while (p != in_end) {
+    if (*p == '%') {
+      *q++ = static_cast<uint8_t>(dehex(p[1]) << 4) | (dehex(p[2]));
+      p += 3;
+    } else {
+      *q++ = *p++;
+    }
+  }
+  GPR_ASSERT(q == GRPC_SLICE_END_PTR(*slice_out));
+  return true;
+}
+
+grpc_slice grpc_permissive_percent_decode_slice(const grpc_slice& slice_in) {
+  const uint8_t* p = GRPC_SLICE_START_PTR(slice_in);
+  const uint8_t* in_end = GRPC_SLICE_END_PTR(slice_in);
+  size_t out_length = 0;
+  bool any_percent_encoded_stuff = false;
+  while (p != in_end) {
+    if (*p == '%') {
+      if (!valid_hex(p + 1, in_end) || !valid_hex(p + 2, in_end)) {
+        p++;
+        out_length++;
+      } else {
+        p += 3;
+        out_length++;
+        any_percent_encoded_stuff = true;
+      }
+    } else {
+      p++;
+      out_length++;
+    }
+  }
+  if (!any_percent_encoded_stuff) {
+    return grpc_slice_ref_internal(slice_in);
+  }
+  p = GRPC_SLICE_START_PTR(slice_in);
+  grpc_slice out = GRPC_SLICE_MALLOC(out_length);
+  uint8_t* q = GRPC_SLICE_START_PTR(out);
+  while (p != in_end) {
+    if (*p == '%') {
+      if (!valid_hex(p + 1, in_end) || !valid_hex(p + 2, in_end)) {
+        *q++ = *p++;
+      } else {
+        *q++ = static_cast<uint8_t>(dehex(p[1]) << 4) | (dehex(p[2]));
+        p += 3;
+      }
+    } else {
+      *q++ = *p++;
+    }
+  }
+  GPR_ASSERT(q == GRPC_SLICE_END_PTR(out));
+  return out;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.h
new file mode 100644
index 0000000..43b20f0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/percent_encoding.h	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H
+#define GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H
+
+/* Percent encoding and decoding of slices.
+   Transforms arbitrary strings into safe-for-transmission strings by using
+   variants of percent encoding (RFC 3986).
+   Two major variants are supplied: one that strictly matches URL encoding,
+     and another which applies percent encoding only to non-http2 header
+     bytes (the 'compatible' variant) */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/slice.h>
+
+/* URL percent encoding spec bitfield (usabel as 'unreserved_bytes' in
+   grpc_percent_encode_slice, grpc_strict_percent_decode_slice).
+   Flags [A-Za-z0-9-_.~] as unreserved bytes for the percent encoding routines
+   */
+extern const uint8_t grpc_url_percent_encoding_unreserved_bytes[256 / 8];
+/* URL percent encoding spec bitfield (usabel as 'unreserved_bytes' in
+   grpc_percent_encode_slice, grpc_strict_percent_decode_slice).
+   Flags ascii7 non-control characters excluding '%' as unreserved bytes for the
+   percent encoding routines */
+extern const uint8_t grpc_compatible_percent_encoding_unreserved_bytes[256 / 8];
+
+/* Percent-encode a slice, returning the new slice (this cannot fail):
+   unreserved_bytes is a bitfield indicating which bytes are considered
+   unreserved and thus do not need percent encoding */
+grpc_slice grpc_percent_encode_slice(const grpc_slice& slice,
+                                     const uint8_t* unreserved_bytes);
+/* Percent-decode a slice, strictly.
+   If the input is legal (contains no unreserved bytes, and legal % encodings),
+   returns true and sets *slice_out to the decoded slice.
+   If the input is not legal, returns false and leaves *slice_out untouched.
+   unreserved_bytes is a bitfield indicating which bytes are considered
+   unreserved and thus do not need percent encoding */
+bool grpc_strict_percent_decode_slice(const grpc_slice& slice_in,
+                                      const uint8_t* unreserved_bytes,
+                                      grpc_slice* slice_out);
+/* Percent-decode a slice, permissively.
+   If a % triplet can not be decoded, pass it through verbatim.
+   This cannot fail. */
+grpc_slice grpc_permissive_percent_decode_slice(const grpc_slice& slice_in);
+
+#endif /* GRPC_CORE_LIB_SLICE_PERCENT_ENCODING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice.cc
new file mode 100644
index 0000000..c0e2164
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice.cc	
@@ -0,0 +1,559 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <string.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+char* grpc_slice_to_c_string(grpc_slice slice) {
+  char* out = static_cast<char*>(gpr_malloc(GRPC_SLICE_LENGTH(slice) + 1));
+  memcpy(out, GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice));
+  out[GRPC_SLICE_LENGTH(slice)] = 0;
+  return out;
+}
+
+grpc_slice grpc_empty_slice(void) { return grpc_core::UnmanagedMemorySlice(); }
+
+grpc_slice grpc_slice_copy(grpc_slice s) {
+  grpc_slice out = GRPC_SLICE_MALLOC(GRPC_SLICE_LENGTH(s));
+  memcpy(GRPC_SLICE_START_PTR(out), GRPC_SLICE_START_PTR(s),
+         GRPC_SLICE_LENGTH(s));
+  return out;
+}
+
+/* Public API */
+grpc_slice grpc_slice_ref(grpc_slice slice) {
+  return grpc_slice_ref_internal(slice);
+}
+
+/* Public API */
+void grpc_slice_unref(grpc_slice slice) {
+  if (grpc_core::ExecCtx::Get() == nullptr) {
+    grpc_core::ExecCtx exec_ctx;
+    grpc_slice_unref_internal(slice);
+  } else {
+    grpc_slice_unref_internal(slice);
+  }
+}
+
+namespace grpc_core {
+
+/* grpc_slice_from_static_string support structure - a refcount that does
+   nothing */
+grpc_slice_refcount kNoopRefcount(grpc_slice_refcount::Type::NOP);
+static_assert(std::is_trivially_destructible<decltype(kNoopRefcount)>::value,
+              "kNoopRefcount must be trivially destructible.");
+
+/* grpc_slice_new support structures - we create a refcount object extended
+   with the user provided data pointer & destroy function */
+class NewSliceRefcount {
+ public:
+  static void Destroy(void* arg) { delete static_cast<NewSliceRefcount*>(arg); }
+
+  NewSliceRefcount(void (*destroy)(void*), void* user_data)
+      : base_(grpc_slice_refcount::Type::REGULAR, &refs_, Destroy, this,
+              &base_),
+        user_destroy_(destroy),
+        user_data_(user_data) {}
+  ~NewSliceRefcount() { user_destroy_(user_data_); }
+
+  grpc_slice_refcount* base_refcount() { return &base_; }
+
+ private:
+  grpc_slice_refcount base_;
+  RefCount refs_;
+  void (*user_destroy_)(void*);
+  void* user_data_;
+};
+
+}  // namespace grpc_core
+
+size_t grpc_slice_memory_usage(grpc_slice s) {
+  if (s.refcount == nullptr || s.refcount == &grpc_core::kNoopRefcount) {
+    return 0;
+  } else {
+    return s.data.refcounted.length;
+  }
+}
+
+grpc_slice grpc_slice_from_static_buffer(const void* s, size_t len) {
+  return grpc_core::ExternallyManagedSlice(s, len);
+}
+
+grpc_slice grpc_slice_from_static_string(const char* s) {
+  return grpc_core::ExternallyManagedSlice(s, strlen(s));
+}
+
+grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
+                                         void (*destroy)(void*),
+                                         void* user_data) {
+  grpc_slice slice;
+  slice.refcount =
+      (new grpc_core::NewSliceRefcount(destroy, user_data))->base_refcount();
+  slice.data.refcounted.bytes = static_cast<uint8_t*>(p);
+  slice.data.refcounted.length = len;
+  return slice;
+}
+
+grpc_slice grpc_slice_new(void* p, size_t len, void (*destroy)(void*)) {
+  /* Pass "p" to *destroy when the slice is no longer needed. */
+  return grpc_slice_new_with_user_data(p, len, destroy, p);
+}
+
+namespace grpc_core {
+/* grpc_slice_new_with_len support structures - we create a refcount object
+   extended with the user provided data pointer & destroy function */
+class NewWithLenSliceRefcount {
+ public:
+  static void Destroy(void* arg) {
+    delete static_cast<NewWithLenSliceRefcount*>(arg);
+  }
+
+  NewWithLenSliceRefcount(void (*destroy)(void*, size_t), void* user_data,
+                          size_t user_length)
+      : base_(grpc_slice_refcount::Type::REGULAR, &refs_, Destroy, this,
+              &base_),
+        user_data_(user_data),
+        user_length_(user_length),
+        user_destroy_(destroy) {}
+  ~NewWithLenSliceRefcount() { user_destroy_(user_data_, user_length_); }
+
+  grpc_slice_refcount* base_refcount() { return &base_; }
+
+ private:
+  grpc_slice_refcount base_;
+  RefCount refs_;
+  void* user_data_;
+  size_t user_length_;
+  void (*user_destroy_)(void*, size_t);
+};
+
+/** grpc_slice_from_moved_(string|buffer) ref count .*/
+class MovedStringSliceRefCount {
+ public:
+  MovedStringSliceRefCount(grpc_core::UniquePtr<char>&& str)
+      : base_(grpc_slice_refcount::Type::REGULAR, &refs_, Destroy, this,
+              &base_),
+        str_(std::move(str)) {}
+
+  grpc_slice_refcount* base_refcount() { return &base_; }
+
+ private:
+  static void Destroy(void* arg) {
+    delete static_cast<MovedStringSliceRefCount*>(arg);
+  }
+
+  grpc_slice_refcount base_;
+  grpc_core::RefCount refs_;
+  grpc_core::UniquePtr<char> str_;
+};
+
+}  // namespace grpc_core
+
+grpc_slice grpc_slice_new_with_len(void* p, size_t len,
+                                   void (*destroy)(void*, size_t)) {
+  grpc_slice slice;
+  slice.refcount = (new grpc_core::NewWithLenSliceRefcount(destroy, p, len))
+                       ->base_refcount();
+  slice.data.refcounted.bytes = static_cast<uint8_t*>(p);
+  slice.data.refcounted.length = len;
+  return slice;
+}
+
+grpc_core::UnmanagedMemorySlice::UnmanagedMemorySlice(const char* source,
+                                                      size_t length) {
+  if (length <= sizeof(data.inlined.bytes)) {
+    refcount = nullptr;
+    data.inlined.length = static_cast<uint8_t>(length);
+  } else {
+    HeapInit(length);
+  }
+  if (length > 0) {
+    memcpy(GRPC_SLICE_START_PTR(*this), source, length);
+  }
+}
+
+grpc_core::UnmanagedMemorySlice::UnmanagedMemorySlice(const char* source)
+    : grpc_core::UnmanagedMemorySlice::UnmanagedMemorySlice(source,
+                                                            strlen(source)) {}
+
+grpc_slice grpc_slice_from_copied_buffer(const char* source, size_t length) {
+  return grpc_core::UnmanagedMemorySlice(source, length);
+}
+
+grpc_slice grpc_slice_from_copied_string(const char* source) {
+  return grpc_core::UnmanagedMemorySlice(source, strlen(source));
+}
+
+grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char> p,
+                                        size_t len) {
+  uint8_t* ptr = reinterpret_cast<uint8_t*>(p.get());
+  grpc_slice slice;
+  if (len <= sizeof(slice.data.inlined.bytes)) {
+    slice.refcount = nullptr;
+    slice.data.inlined.length = len;
+    memcpy(GRPC_SLICE_START_PTR(slice), ptr, len);
+  } else {
+    slice.refcount = (new grpc_core::MovedStringSliceRefCount(std::move(p)))
+                         ->base_refcount();
+    slice.data.refcounted.bytes = ptr;
+    slice.data.refcounted.length = len;
+  }
+  return slice;
+}
+
+grpc_slice grpc_slice_from_moved_string(grpc_core::UniquePtr<char> p) {
+  const size_t len = strlen(p.get());
+  return grpc_slice_from_moved_buffer(std::move(p), len);
+}
+
+namespace {
+
+class MallocRefCount {
+ public:
+  static void Destroy(void* arg) {
+    MallocRefCount* r = static_cast<MallocRefCount*>(arg);
+    r->~MallocRefCount();
+    gpr_free(r);
+  }
+
+  MallocRefCount()
+      : base_(grpc_slice_refcount::Type::REGULAR, &refs_, Destroy, this,
+              &base_) {}
+  ~MallocRefCount() = default;
+
+  grpc_slice_refcount* base_refcount() { return &base_; }
+
+ private:
+  grpc_slice_refcount base_;
+  grpc_core::RefCount refs_;
+};
+
+}  // namespace
+
+grpc_slice grpc_slice_malloc_large(size_t length) {
+  return grpc_core::UnmanagedMemorySlice(
+      length, grpc_core::UnmanagedMemorySlice::ForceHeapAllocation());
+}
+
+void grpc_core::UnmanagedMemorySlice::HeapInit(size_t length) {
+  /* Memory layout used by the slice created here:
+
+     +-----------+----------------------------------------------------------+
+     | refcount  | bytes                                                    |
+     +-----------+----------------------------------------------------------+
+
+     refcount is a malloc_refcount
+     bytes is an array of bytes of the requested length
+     Both parts are placed in the same allocation returned from gpr_malloc */
+  auto* rc =
+      static_cast<MallocRefCount*>(gpr_malloc(sizeof(MallocRefCount) + length));
+
+  /* Initial refcount on rc is 1 - and it's up to the caller to release
+     this reference. */
+  new (rc) MallocRefCount();
+
+  /* Build up the slice to be returned. */
+  /* The slices refcount points back to the allocated block. */
+  refcount = rc->base_refcount();
+  /* The data bytes are placed immediately after the refcount struct */
+  data.refcounted.bytes = reinterpret_cast<uint8_t*>(rc + 1);
+  /* And the length of the block is set to the requested length */
+  data.refcounted.length = length;
+}
+
+grpc_slice grpc_slice_malloc(size_t length) {
+  return grpc_core::UnmanagedMemorySlice(length);
+}
+
+grpc_core::UnmanagedMemorySlice::UnmanagedMemorySlice(size_t length) {
+  if (length > sizeof(data.inlined.bytes)) {
+    HeapInit(length);
+  } else {
+    /* small slice: just inline the data */
+    refcount = nullptr;
+    data.inlined.length = static_cast<uint8_t>(length);
+  }
+}
+
+template <typename Slice>
+static Slice sub_no_ref(const Slice& source, size_t begin, size_t end) {
+  Slice subset;
+
+  GPR_ASSERT(end >= begin);
+
+  if (source.refcount) {
+    /* Enforce preconditions */
+    GPR_ASSERT(source.data.refcounted.length >= end);
+
+    /* Build the result */
+    subset.refcount = source.refcount->sub_refcount();
+    /* Point into the source array */
+    subset.data.refcounted.bytes = source.data.refcounted.bytes + begin;
+    subset.data.refcounted.length = end - begin;
+  } else {
+    /* Enforce preconditions */
+    GPR_ASSERT(source.data.inlined.length >= end);
+    subset.refcount = nullptr;
+    subset.data.inlined.length = static_cast<uint8_t>(end - begin);
+    memcpy(subset.data.inlined.bytes, source.data.inlined.bytes + begin,
+           end - begin);
+  }
+  return subset;
+}
+
+grpc_slice grpc_slice_sub_no_ref(grpc_slice source, size_t begin, size_t end) {
+  return sub_no_ref(source, begin, end);
+}
+
+grpc_core::UnmanagedMemorySlice grpc_slice_sub_no_ref(
+    const grpc_core::UnmanagedMemorySlice& source, size_t begin, size_t end) {
+  return sub_no_ref(source, begin, end);
+}
+
+grpc_slice grpc_slice_sub(grpc_slice source, size_t begin, size_t end) {
+  grpc_slice subset;
+
+  if (end - begin <= sizeof(subset.data.inlined.bytes)) {
+    subset.refcount = nullptr;
+    subset.data.inlined.length = static_cast<uint8_t>(end - begin);
+    memcpy(subset.data.inlined.bytes, GRPC_SLICE_START_PTR(source) + begin,
+           end - begin);
+  } else {
+    subset = grpc_slice_sub_no_ref(source, begin, end);
+    /* Bump the refcount */
+    subset.refcount->Ref();
+  }
+  return subset;
+}
+
+grpc_slice grpc_slice_split_tail_maybe_ref(grpc_slice* source, size_t split,
+                                           grpc_slice_ref_whom ref_whom) {
+  grpc_slice tail;
+
+  if (source->refcount == nullptr) {
+    /* inlined data, copy it out */
+    GPR_ASSERT(source->data.inlined.length >= split);
+    tail.refcount = nullptr;
+    tail.data.inlined.length =
+        static_cast<uint8_t>(source->data.inlined.length - split);
+    memcpy(tail.data.inlined.bytes, source->data.inlined.bytes + split,
+           tail.data.inlined.length);
+    source->data.inlined.length = static_cast<uint8_t>(split);
+  } else {
+    size_t tail_length = source->data.refcounted.length - split;
+    GPR_ASSERT(source->data.refcounted.length >= split);
+    if (tail_length < sizeof(tail.data.inlined.bytes) &&
+        ref_whom != GRPC_SLICE_REF_TAIL) {
+      /* Copy out the bytes - it'll be cheaper than refcounting */
+      tail.refcount = nullptr;
+      tail.data.inlined.length = static_cast<uint8_t>(tail_length);
+      memcpy(tail.data.inlined.bytes, source->data.refcounted.bytes + split,
+             tail_length);
+      source->refcount = source->refcount->sub_refcount();
+    } else {
+      /* Build the result */
+      switch (ref_whom) {
+        case GRPC_SLICE_REF_TAIL:
+          tail.refcount = source->refcount->sub_refcount();
+          source->refcount = &grpc_core::kNoopRefcount;
+          break;
+        case GRPC_SLICE_REF_HEAD:
+          tail.refcount = &grpc_core::kNoopRefcount;
+          source->refcount = source->refcount->sub_refcount();
+          break;
+        case GRPC_SLICE_REF_BOTH:
+          tail.refcount = source->refcount->sub_refcount();
+          source->refcount = source->refcount->sub_refcount();
+          /* Bump the refcount */
+          tail.refcount->Ref();
+          break;
+      }
+      /* Point into the source array */
+      tail.data.refcounted.bytes = source->data.refcounted.bytes + split;
+      tail.data.refcounted.length = tail_length;
+    }
+    source->data.refcounted.length = split;
+  }
+
+  return tail;
+}
+
+grpc_slice grpc_slice_split_tail(grpc_slice* source, size_t split) {
+  return grpc_slice_split_tail_maybe_ref(source, split, GRPC_SLICE_REF_BOTH);
+}
+
+grpc_slice grpc_slice_split_head(grpc_slice* source, size_t split) {
+  grpc_slice head;
+
+  if (source->refcount == nullptr) {
+    GPR_ASSERT(source->data.inlined.length >= split);
+
+    head.refcount = nullptr;
+    head.data.inlined.length = static_cast<uint8_t>(split);
+    memcpy(head.data.inlined.bytes, source->data.inlined.bytes, split);
+    source->data.inlined.length =
+        static_cast<uint8_t>(source->data.inlined.length - split);
+    memmove(source->data.inlined.bytes, source->data.inlined.bytes + split,
+            source->data.inlined.length);
+  } else if (split < sizeof(head.data.inlined.bytes)) {
+    GPR_ASSERT(source->data.refcounted.length >= split);
+
+    head.refcount = nullptr;
+    head.data.inlined.length = static_cast<uint8_t>(split);
+    memcpy(head.data.inlined.bytes, source->data.refcounted.bytes, split);
+    source->refcount = source->refcount->sub_refcount();
+    source->data.refcounted.bytes += split;
+    source->data.refcounted.length -= split;
+  } else {
+    GPR_ASSERT(source->data.refcounted.length >= split);
+
+    /* Build the result */
+    head.refcount = source->refcount->sub_refcount();
+    /* Bump the refcount */
+    head.refcount->Ref();
+    /* Point into the source array */
+    head.data.refcounted.bytes = source->data.refcounted.bytes;
+    head.data.refcounted.length = split;
+    source->refcount = source->refcount->sub_refcount();
+    source->data.refcounted.bytes += split;
+    source->data.refcounted.length -= split;
+  }
+
+  return head;
+}
+
+int grpc_slice_default_eq_impl(grpc_slice a, grpc_slice b) {
+  if (GRPC_SLICE_LENGTH(a) != GRPC_SLICE_LENGTH(b)) return false;
+  if (GRPC_SLICE_LENGTH(a) == 0) return true;
+  return 0 == memcmp(GRPC_SLICE_START_PTR(a), GRPC_SLICE_START_PTR(b),
+                     GRPC_SLICE_LENGTH(a));
+}
+
+int grpc_slice_eq(grpc_slice a, grpc_slice b) {
+  if (a.refcount && b.refcount &&
+      a.refcount->GetType() == b.refcount->GetType()) {
+    return a.refcount->Eq(a, b);
+  }
+  return grpc_slice_default_eq_impl(a, b);
+}
+
+int grpc_slice_differs_refcounted(const grpc_slice& a,
+                                  const grpc_slice& b_not_inline) {
+  size_t a_len;
+  const uint8_t* a_ptr;
+  if (a.refcount) {
+    a_len = a.data.refcounted.length;
+    a_ptr = a.data.refcounted.bytes;
+  } else {
+    a_len = a.data.inlined.length;
+    a_ptr = &a.data.inlined.bytes[0];
+  }
+  if (a_len != b_not_inline.data.refcounted.length) {
+    return true;
+  }
+  if (a_len == 0) {
+    return false;
+  }
+  // This check *must* occur after the a_len == 0 check
+  // to retain compatibility with grpc_slice_eq.
+  if (a_ptr == nullptr) {
+    return true;
+  }
+  return memcmp(a_ptr, b_not_inline.data.refcounted.bytes, a_len);
+}
+
+int grpc_slice_cmp(grpc_slice a, grpc_slice b) {
+  int d = static_cast<int>(GRPC_SLICE_LENGTH(a) - GRPC_SLICE_LENGTH(b));
+  if (d != 0) return d;
+  return memcmp(GRPC_SLICE_START_PTR(a), GRPC_SLICE_START_PTR(b),
+                GRPC_SLICE_LENGTH(a));
+}
+
+int grpc_slice_str_cmp(grpc_slice a, const char* b) {
+  size_t b_length = strlen(b);
+  int d = static_cast<int>(GRPC_SLICE_LENGTH(a) - b_length);
+  if (d != 0) return d;
+  return memcmp(GRPC_SLICE_START_PTR(a), b, b_length);
+}
+
+int grpc_slice_is_equivalent(grpc_slice a, grpc_slice b) {
+  if (a.refcount == nullptr || b.refcount == nullptr) {
+    return grpc_slice_eq(a, b);
+  }
+  return a.data.refcounted.length == b.data.refcounted.length &&
+         a.data.refcounted.bytes == b.data.refcounted.bytes;
+}
+
+int grpc_slice_buf_start_eq(grpc_slice a, const void* b, size_t len) {
+  if (GRPC_SLICE_LENGTH(a) < len) return 0;
+  return 0 == memcmp(GRPC_SLICE_START_PTR(a), b, len);
+}
+
+int grpc_slice_rchr(grpc_slice s, char c) {
+  const char* b = reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s);
+  int i;
+  for (i = static_cast<int> GRPC_SLICE_LENGTH(s) - 1; i != -1 && b[i] != c; i--)
+    ;
+  return i;
+}
+
+int grpc_slice_chr(grpc_slice s, char c) {
+  const char* b = reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s);
+  const char* p = static_cast<const char*>(memchr(b, c, GRPC_SLICE_LENGTH(s)));
+  return p == nullptr ? -1 : static_cast<int>(p - b);
+}
+
+int grpc_slice_slice(grpc_slice haystack, grpc_slice needle) {
+  size_t haystack_len = GRPC_SLICE_LENGTH(haystack);
+  const uint8_t* haystack_bytes = GRPC_SLICE_START_PTR(haystack);
+  size_t needle_len = GRPC_SLICE_LENGTH(needle);
+  const uint8_t* needle_bytes = GRPC_SLICE_START_PTR(needle);
+
+  if (haystack_len == 0 || needle_len == 0) return -1;
+  if (haystack_len < needle_len) return -1;
+  if (haystack_len == needle_len)
+    return grpc_slice_eq(haystack, needle) ? 0 : -1;
+  if (needle_len == 1)
+    return grpc_slice_chr(haystack, static_cast<char>(*needle_bytes));
+
+  const uint8_t* last = haystack_bytes + haystack_len - needle_len;
+  for (const uint8_t* cur = haystack_bytes; cur != last; ++cur) {
+    if (0 == memcmp(cur, needle_bytes, needle_len)) {
+      return static_cast<int>(cur - haystack_bytes);
+    }
+  }
+  return -1;
+}
+
+grpc_slice grpc_slice_dup(grpc_slice a) {
+  grpc_slice copy = GRPC_SLICE_MALLOC(GRPC_SLICE_LENGTH(a));
+  memcpy(GRPC_SLICE_START_PTR(copy), GRPC_SLICE_START_PTR(a),
+         GRPC_SLICE_LENGTH(a));
+  return copy;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_buffer.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_buffer.cc
new file mode 100644
index 0000000..2d66694
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_buffer.cc	
@@ -0,0 +1,413 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/* grow a buffer; requires GRPC_SLICE_BUFFER_INLINE_ELEMENTS > 1 */
+#define GROW(x) (3 * (x) / 2)
+
+/* Typically, we do not actually need to embiggen (by calling
+ * memmove/malloc/realloc) - only if we were up against the full capacity of the
+ * slice buffer. If do_embiggen is inlined, the compiler clobbers multiple
+ * registers pointlessly in the common case. */
+static void GPR_ATTRIBUTE_NOINLINE do_embiggen(grpc_slice_buffer* sb,
+                                               const size_t slice_count,
+                                               const size_t slice_offset) {
+  if (slice_offset != 0) {
+    /* Make room by moving elements if there's still space unused */
+    memmove(sb->base_slices, sb->slices, sb->count * sizeof(grpc_slice));
+    sb->slices = sb->base_slices;
+  } else {
+    /* Allocate more memory if no more space is available */
+    const size_t new_capacity = GROW(sb->capacity);
+    sb->capacity = new_capacity;
+    if (sb->base_slices == sb->inlined) {
+      sb->base_slices = static_cast<grpc_slice*>(
+          gpr_malloc(new_capacity * sizeof(grpc_slice)));
+      memcpy(sb->base_slices, sb->inlined, slice_count * sizeof(grpc_slice));
+    } else {
+      sb->base_slices = static_cast<grpc_slice*>(
+          gpr_realloc(sb->base_slices, new_capacity * sizeof(grpc_slice)));
+    }
+
+    sb->slices = sb->base_slices + slice_offset;
+  }
+}
+
+static void maybe_embiggen(grpc_slice_buffer* sb) {
+  if (sb->count == 0) {
+    sb->slices = sb->base_slices;
+    return;
+  }
+
+  /* How far away from sb->base_slices is sb->slices pointer */
+  size_t slice_offset = static_cast<size_t>(sb->slices - sb->base_slices);
+  size_t slice_count = sb->count + slice_offset;
+  if (GPR_UNLIKELY(slice_count == sb->capacity)) {
+    do_embiggen(sb, slice_count, slice_offset);
+  }
+}
+
+void grpc_slice_buffer_init(grpc_slice_buffer* sb) {
+  sb->count = 0;
+  sb->length = 0;
+  sb->capacity = GRPC_SLICE_BUFFER_INLINE_ELEMENTS;
+  sb->base_slices = sb->slices = sb->inlined;
+}
+
+void grpc_slice_buffer_destroy_internal(grpc_slice_buffer* sb) {
+  grpc_slice_buffer_reset_and_unref_internal(sb);
+  if (sb->base_slices != sb->inlined) {
+    gpr_free(sb->base_slices);
+  }
+}
+
+void grpc_slice_buffer_destroy(grpc_slice_buffer* sb) {
+  if (grpc_core::ExecCtx::Get() == nullptr) {
+    grpc_core::ExecCtx exec_ctx;
+    grpc_slice_buffer_destroy_internal(sb);
+  } else {
+    grpc_slice_buffer_destroy_internal(sb);
+  }
+}
+
+uint8_t* grpc_slice_buffer_tiny_add(grpc_slice_buffer* sb, size_t n) {
+  grpc_slice* back;
+  uint8_t* out;
+
+  sb->length += n;
+
+  if (sb->count == 0) goto add_first;
+  back = &sb->slices[sb->count - 1];
+  if (back->refcount) goto add_new;
+  if ((back->data.inlined.length + n) > sizeof(back->data.inlined.bytes))
+    goto add_new;
+  out = back->data.inlined.bytes + back->data.inlined.length;
+  back->data.inlined.length =
+      static_cast<uint8_t>(back->data.inlined.length + n);
+  return out;
+
+add_new:
+  maybe_embiggen(sb);
+add_first:
+  back = &sb->slices[sb->count];
+  sb->count++;
+  back->refcount = nullptr;
+  back->data.inlined.length = static_cast<uint8_t>(n);
+  return back->data.inlined.bytes;
+}
+
+size_t grpc_slice_buffer_add_indexed(grpc_slice_buffer* sb, grpc_slice s) {
+  size_t out = sb->count;
+  maybe_embiggen(sb);
+  sb->slices[out] = s;
+  sb->length += GRPC_SLICE_LENGTH(s);
+  sb->count = out + 1;
+  return out;
+}
+
+void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice s) {
+  size_t n = sb->count;
+  /* if both the last slice in the slice buffer and the slice being added
+     are inlined (that is, that they carry their data inside the slice data
+     structure), and the back slice is not full, then concatenate directly
+     into the back slice, preventing many small slices being passed into
+     writes */
+  if (!s.refcount && n) {
+    grpc_slice* back = &sb->slices[n - 1];
+    if (!back->refcount &&
+        back->data.inlined.length < GRPC_SLICE_INLINED_SIZE) {
+      if (s.data.inlined.length + back->data.inlined.length <=
+          GRPC_SLICE_INLINED_SIZE) {
+        memcpy(back->data.inlined.bytes + back->data.inlined.length,
+               s.data.inlined.bytes, s.data.inlined.length);
+        back->data.inlined.length = static_cast<uint8_t>(
+            back->data.inlined.length + s.data.inlined.length);
+      } else {
+        size_t cp1 = GRPC_SLICE_INLINED_SIZE - back->data.inlined.length;
+        memcpy(back->data.inlined.bytes + back->data.inlined.length,
+               s.data.inlined.bytes, cp1);
+        back->data.inlined.length = GRPC_SLICE_INLINED_SIZE;
+        maybe_embiggen(sb);
+        back = &sb->slices[n];
+        sb->count = n + 1;
+        back->refcount = nullptr;
+        back->data.inlined.length =
+            static_cast<uint8_t>(s.data.inlined.length - cp1);
+        memcpy(back->data.inlined.bytes, s.data.inlined.bytes + cp1,
+               s.data.inlined.length - cp1);
+      }
+      sb->length += s.data.inlined.length;
+      return; /* early out */
+    }
+  }
+  grpc_slice_buffer_add_indexed(sb, s);
+}
+
+void grpc_slice_buffer_addn(grpc_slice_buffer* sb, grpc_slice* s, size_t n) {
+  size_t i;
+  for (i = 0; i < n; i++) {
+    grpc_slice_buffer_add(sb, s[i]);
+  }
+}
+
+void grpc_slice_buffer_pop(grpc_slice_buffer* sb) {
+  if (sb->count != 0) {
+    size_t count = --sb->count;
+    sb->length -= GRPC_SLICE_LENGTH(sb->slices[count]);
+  }
+}
+
+void grpc_slice_buffer_reset_and_unref_internal(grpc_slice_buffer* sb) {
+  size_t i;
+  for (i = 0; i < sb->count; i++) {
+    grpc_slice_unref_internal(sb->slices[i]);
+  }
+
+  sb->count = 0;
+  sb->length = 0;
+  sb->slices = sb->base_slices;
+}
+
+void grpc_slice_buffer_reset_and_unref(grpc_slice_buffer* sb) {
+  if (grpc_core::ExecCtx::Get() == nullptr) {
+    grpc_core::ExecCtx exec_ctx;
+    grpc_slice_buffer_reset_and_unref_internal(sb);
+  } else {
+    grpc_slice_buffer_reset_and_unref_internal(sb);
+  }
+}
+
+void grpc_slice_buffer_swap(grpc_slice_buffer* a, grpc_slice_buffer* b) {
+  size_t a_offset = static_cast<size_t>(a->slices - a->base_slices);
+  size_t b_offset = static_cast<size_t>(b->slices - b->base_slices);
+
+  size_t a_count = a->count + a_offset;
+  size_t b_count = b->count + b_offset;
+
+  if (a->base_slices == a->inlined) {
+    if (b->base_slices == b->inlined) {
+      /* swap contents of inlined buffer */
+      grpc_slice temp[GRPC_SLICE_BUFFER_INLINE_ELEMENTS];
+      memcpy(temp, a->base_slices, a_count * sizeof(grpc_slice));
+      memcpy(a->base_slices, b->base_slices, b_count * sizeof(grpc_slice));
+      memcpy(b->base_slices, temp, a_count * sizeof(grpc_slice));
+    } else {
+      /* a is inlined, b is not - copy a inlined into b, fix pointers */
+      a->base_slices = b->base_slices;
+      b->base_slices = b->inlined;
+      memcpy(b->base_slices, a->inlined, a_count * sizeof(grpc_slice));
+    }
+  } else if (b->base_slices == b->inlined) {
+    /* b is inlined, a is not - copy b inlined int a, fix pointers */
+    b->base_slices = a->base_slices;
+    a->base_slices = a->inlined;
+    memcpy(a->base_slices, b->inlined, b_count * sizeof(grpc_slice));
+  } else {
+    /* no inlining: easy swap */
+    GPR_SWAP(grpc_slice*, a->base_slices, b->base_slices);
+  }
+
+  /* Update the slices pointers (cannot do a GPR_SWAP on slices fields here).
+   * Also note that since the base_slices pointers are already swapped we need
+   * use 'b_offset' for 'a->base_slices' and vice versa */
+  a->slices = a->base_slices + b_offset;
+  b->slices = b->base_slices + a_offset;
+
+  /* base_slices and slices fields are correctly set. Swap all other fields */
+  GPR_SWAP(size_t, a->count, b->count);
+  GPR_SWAP(size_t, a->capacity, b->capacity);
+  GPR_SWAP(size_t, a->length, b->length);
+}
+
+void grpc_slice_buffer_move_into(grpc_slice_buffer* src,
+                                 grpc_slice_buffer* dst) {
+  /* anything to move? */
+  if (src->count == 0) {
+    return;
+  }
+  /* anything in dst? */
+  if (dst->count == 0) {
+    grpc_slice_buffer_swap(src, dst);
+    return;
+  }
+  /* both buffers have data - copy, and reset src */
+  grpc_slice_buffer_addn(dst, src->slices, src->count);
+  src->count = 0;
+  src->length = 0;
+}
+
+template <bool incref>
+static void slice_buffer_move_first_maybe_ref(grpc_slice_buffer* src, size_t n,
+                                              grpc_slice_buffer* dst) {
+  GPR_ASSERT(src->length >= n);
+  if (src->length == n) {
+    grpc_slice_buffer_move_into(src, dst);
+    return;
+  }
+
+  size_t output_len = dst->length + n;
+  size_t new_input_len = src->length - n;
+
+  while (src->count > 0) {
+    grpc_slice slice = grpc_slice_buffer_take_first(src);
+    size_t slice_len = GRPC_SLICE_LENGTH(slice);
+    if (n > slice_len) {
+      grpc_slice_buffer_add(dst, slice);
+      n -= slice_len;
+    } else if (n == slice_len) {
+      grpc_slice_buffer_add(dst, slice);
+      break;
+    } else if (incref) { /* n < slice_len */
+      grpc_slice_buffer_undo_take_first(
+          src, grpc_slice_split_tail_maybe_ref(&slice, n, GRPC_SLICE_REF_BOTH));
+      GPR_ASSERT(GRPC_SLICE_LENGTH(slice) == n);
+      grpc_slice_buffer_add(dst, slice);
+      break;
+    } else { /* n < slice_len */
+      grpc_slice_buffer_undo_take_first(
+          src, grpc_slice_split_tail_maybe_ref(&slice, n, GRPC_SLICE_REF_TAIL));
+      GPR_ASSERT(GRPC_SLICE_LENGTH(slice) == n);
+      grpc_slice_buffer_add_indexed(dst, slice);
+      break;
+    }
+  }
+  GPR_ASSERT(dst->length == output_len);
+  GPR_ASSERT(src->length == new_input_len);
+  GPR_ASSERT(src->count > 0);
+}
+
+void grpc_slice_buffer_move_first(grpc_slice_buffer* src, size_t n,
+                                  grpc_slice_buffer* dst) {
+  slice_buffer_move_first_maybe_ref<true>(src, n, dst);
+}
+
+void grpc_slice_buffer_move_first_no_ref(grpc_slice_buffer* src, size_t n,
+                                         grpc_slice_buffer* dst) {
+  slice_buffer_move_first_maybe_ref<false>(src, n, dst);
+}
+
+void grpc_slice_buffer_move_first_into_buffer(grpc_slice_buffer* src, size_t n,
+                                              void* dst) {
+  char* dstp = static_cast<char*>(dst);
+  GPR_ASSERT(src->length >= n);
+
+  while (n > 0) {
+    grpc_slice slice = grpc_slice_buffer_take_first(src);
+    size_t slice_len = GRPC_SLICE_LENGTH(slice);
+    if (slice_len > n) {
+      memcpy(dstp, GRPC_SLICE_START_PTR(slice), n);
+      grpc_slice_buffer_undo_take_first(
+          src, grpc_slice_sub_no_ref(slice, n, slice_len));
+      n = 0;
+    } else if (slice_len == n) {
+      memcpy(dstp, GRPC_SLICE_START_PTR(slice), n);
+      grpc_slice_unref_internal(slice);
+      n = 0;
+    } else {
+      memcpy(dstp, GRPC_SLICE_START_PTR(slice), slice_len);
+      dstp += slice_len;
+      n -= slice_len;
+      grpc_slice_unref_internal(slice);
+    }
+  }
+}
+
+void grpc_slice_buffer_trim_end(grpc_slice_buffer* sb, size_t n,
+                                grpc_slice_buffer* garbage) {
+  GPR_ASSERT(n <= sb->length);
+  sb->length -= n;
+  for (;;) {
+    size_t idx = sb->count - 1;
+    grpc_slice slice = sb->slices[idx];
+    size_t slice_len = GRPC_SLICE_LENGTH(slice);
+    if (slice_len > n) {
+      sb->slices[idx] = grpc_slice_split_head(&slice, slice_len - n);
+      if (garbage) {
+        grpc_slice_buffer_add_indexed(garbage, slice);
+      } else {
+        grpc_slice_unref_internal(slice);
+      }
+      return;
+    } else if (slice_len == n) {
+      if (garbage) {
+        grpc_slice_buffer_add_indexed(garbage, slice);
+      } else {
+        grpc_slice_unref_internal(slice);
+      }
+      sb->count = idx;
+      return;
+    } else {
+      if (garbage) {
+        grpc_slice_buffer_add_indexed(garbage, slice);
+      } else {
+        grpc_slice_unref_internal(slice);
+      }
+      n -= slice_len;
+      sb->count = idx;
+    }
+  }
+}
+
+grpc_slice grpc_slice_buffer_take_first(grpc_slice_buffer* sb) {
+  grpc_slice slice;
+  GPR_ASSERT(sb->count > 0);
+  slice = sb->slices[0];
+  sb->slices++;
+  sb->count--;
+  sb->length -= GRPC_SLICE_LENGTH(slice);
+
+  return slice;
+}
+
+void grpc_slice_buffer_remove_first(grpc_slice_buffer* sb) {
+  GPR_DEBUG_ASSERT(sb->count > 0);
+  sb->length -= GRPC_SLICE_LENGTH(sb->slices[0]);
+  grpc_slice_unref_internal(sb->slices[0]);
+  sb->slices++;
+  if (--sb->count == 0) {
+    sb->slices = sb->base_slices;
+  }
+}
+
+void grpc_slice_buffer_sub_first(grpc_slice_buffer* sb, size_t begin,
+                                 size_t end) {
+  // TODO(soheil): Introduce a ptr version for sub.
+  sb->length -= GRPC_SLICE_LENGTH(sb->slices[0]);
+  sb->slices[0] = grpc_slice_sub_no_ref(sb->slices[0], begin, end);
+  sb->length += end - begin;
+}
+
+void grpc_slice_buffer_undo_take_first(grpc_slice_buffer* sb,
+                                       grpc_slice slice) {
+  sb->slices--;
+  sb->slices[0] = slice;
+  sb->count++;
+  sb->length += GRPC_SLICE_LENGTH(slice);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_hash_table.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_hash_table.h
new file mode 100644
index 0000000..29a5fc6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_hash_table.h	
@@ -0,0 +1,199 @@
+/*
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H
+#define GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/// Hash table implementation.
+///
+/// This implementation uses open addressing
+/// (https://en.wikipedia.org/wiki/Open_addressing) with linear
+/// probing (https://en.wikipedia.org/wiki/Linear_probing).
+///
+/// The keys are \a grpc_slice objects.  The values can be any type.
+///
+/// Hash tables are intentionally immutable, to avoid the need for locking.
+
+namespace grpc_core {
+
+template <typename T>
+class SliceHashTable : public RefCounted<SliceHashTable<T>> {
+ public:
+  struct Entry {
+    grpc_slice key;
+    T value;
+    bool is_set;
+  };
+
+  // Function for comparing values.
+  // TODO(roth): Eliminate this and the Cmp() method from this API once
+  // grpc_channel_args is redesigned to require that keys are unique.
+  typedef int (*ValueCmp)(const T&, const T&);
+
+  /// Creates a new hash table containing \a entries, which is an array
+  /// of length \a num_entries.  Takes ownership of all keys and values in \a
+  /// entries.  If not null, \a value_cmp will be used to compare values in
+  /// the context of \a Cmp(). If null, raw pointer (\a GPR_ICMP) comparison
+  /// will be used.
+  static RefCountedPtr<SliceHashTable> Create(size_t num_entries,
+                                              Entry* entries,
+                                              ValueCmp value_cmp);
+
+  // Use Create function instead of using this directly.
+  SliceHashTable(size_t num_entries, Entry* entries, ValueCmp value_cmp);
+  virtual ~SliceHashTable();
+
+  /// Returns the value from the table associated with \a key.
+  /// Returns null if \a key is not found.
+  const T* Get(const grpc_slice& key) const;
+
+  /// Compares \a a vs. \a b.
+  /// A table is considered "smaller" (resp. "greater") if:
+  ///  - GPR_ICMP(a->value_cmp, b->value_cmp) < 1 (resp. > 1),
+  ///  - else, it contains fewer (resp. more) entries,
+  ///  - else, if strcmp(a_key, b_key) < 1 (resp. > 1),
+  ///  - else, if value_cmp(a_value, b_value) < 1 (resp. > 1).
+  static int Cmp(const SliceHashTable& a, const SliceHashTable& b);
+
+ private:
+  void Add(const grpc_slice& key, T& value);
+
+  // Default value comparison function, if none specified by caller.
+  static int DefaultValueCmp(const T& a, const T& b) { return GPR_ICMP(a, b); }
+
+  const ValueCmp value_cmp_;
+  const size_t size_;
+  size_t max_num_probes_;
+  Entry* entries_;
+};
+
+//
+// implementation -- no user-serviceable parts below
+//
+
+template <typename T>
+RefCountedPtr<SliceHashTable<T>> SliceHashTable<T>::Create(size_t num_entries,
+                                                           Entry* entries,
+                                                           ValueCmp value_cmp) {
+  return MakeRefCounted<SliceHashTable<T>>(num_entries, entries, value_cmp);
+}
+
+template <typename T>
+SliceHashTable<T>::SliceHashTable(size_t num_entries, Entry* entries,
+                                  ValueCmp value_cmp)
+    : value_cmp_(value_cmp),
+      // Keep load factor low to improve performance of lookups.
+      size_(num_entries * 2),
+      max_num_probes_(0) {
+  entries_ = static_cast<Entry*>(gpr_zalloc(sizeof(Entry) * size_));
+  for (size_t i = 0; i < num_entries; ++i) {
+    Entry* entry = &entries[i];
+    Add(entry->key, entry->value);
+  }
+}
+
+template <typename T>
+SliceHashTable<T>::~SliceHashTable() {
+  for (size_t i = 0; i < size_; ++i) {
+    Entry& entry = entries_[i];
+    if (entry.is_set) {
+      grpc_slice_unref_internal(entry.key);
+      entry.value.~T();
+    }
+  }
+  gpr_free(entries_);
+}
+
+template <typename T>
+void SliceHashTable<T>::Add(const grpc_slice& key, T& value) {
+  const size_t hash = grpc_slice_hash_internal(key);
+  for (size_t offset = 0; offset < size_; ++offset) {
+    const size_t idx = (hash + offset) % size_;
+    if (!entries_[idx].is_set) {
+      entries_[idx].is_set = true;
+      entries_[idx].key = key;
+      entries_[idx].value = std::move(value);
+      // Keep track of the maximum number of probes needed, since this
+      // provides an upper bound for lookups.
+      if (offset > max_num_probes_) max_num_probes_ = offset;
+      return;
+    }
+  }
+  GPR_ASSERT(false);  // Table should never be full.
+}
+
+template <typename T>
+const T* SliceHashTable<T>::Get(const grpc_slice& key) const {
+  const size_t hash = grpc_slice_hash_internal(key);
+  // We cap the number of probes at the max number recorded when
+  // populating the table.
+  for (size_t offset = 0; offset <= max_num_probes_; ++offset) {
+    const size_t idx = (hash + offset) % size_;
+    if (!entries_[idx].is_set) break;
+    if (grpc_slice_eq(entries_[idx].key, key)) {
+      return &entries_[idx].value;
+    }
+  }
+  return nullptr;  // Not found.
+}
+
+template <typename T>
+int SliceHashTable<T>::Cmp(const SliceHashTable& a, const SliceHashTable& b) {
+  ValueCmp value_cmp_a =
+      a.value_cmp_ != nullptr ? a.value_cmp_ : DefaultValueCmp;
+  ValueCmp value_cmp_b =
+      b.value_cmp_ != nullptr ? b.value_cmp_ : DefaultValueCmp;
+  // Compare value_fns
+  const int value_fns_cmp = GPR_ICMP((void*)value_cmp_a, (void*)value_cmp_b);
+  if (value_fns_cmp != 0) return value_fns_cmp;
+  // Compare sizes
+  if (a.size_ < b.size_) return -1;
+  if (a.size_ > b.size_) return 1;
+  // Compare rows.
+  for (size_t i = 0; i < a.size_; ++i) {
+    if (!a.entries_[i].is_set) {
+      if (b.entries_[i].is_set) {
+        return -1;  // a empty but b non-empty
+      }
+      continue;  // both empty, no need to check key or value
+    } else if (!b.entries_[i].is_set) {
+      return 1;  // a non-empty but b empty
+    }
+    // neither entry is empty
+    const int key_cmp = grpc_slice_cmp(a.entries_[i].key, b.entries_[i].key);
+    if (key_cmp != 0) return key_cmp;
+    const int value_cmp = value_cmp_a(a.entries_[i].value, b.entries_[i].value);
+    if (value_cmp != 0) return value_cmp;
+  }
+  return 0;
+}
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_HASH_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_intern.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_intern.cc
new file mode 100644
index 0000000..0feef16
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_intern.cc	
@@ -0,0 +1,376 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_utils.h"
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/iomgr/iomgr_internal.h" /* for iomgr_abort_on_leaks() */
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+#define LOG2_SHARD_COUNT 5
+#define SHARD_COUNT (1 << LOG2_SHARD_COUNT)
+#define INITIAL_SHARD_CAPACITY 8
+
+#define TABLE_IDX(hash, capacity) (((hash) >> LOG2_SHARD_COUNT) % (capacity))
+#define SHARD_IDX(hash) ((hash) & ((1 << LOG2_SHARD_COUNT) - 1))
+
+using grpc_core::InternedSliceRefcount;
+
+typedef struct slice_shard {
+  gpr_mu mu;
+  InternedSliceRefcount** strs;
+  size_t count;
+  size_t capacity;
+} slice_shard;
+
+static slice_shard g_shards[SHARD_COUNT];
+
+typedef struct {
+  uint32_t hash;
+  uint32_t idx;
+} static_metadata_hash_ent;
+
+static static_metadata_hash_ent
+    static_metadata_hash[4 * GRPC_STATIC_MDSTR_COUNT];
+static uint32_t max_static_metadata_hash_probe;
+uint32_t grpc_static_metadata_hash_values[GRPC_STATIC_MDSTR_COUNT];
+
+namespace grpc_core {
+
+/* hash seed: decided at initialization time */
+uint32_t g_hash_seed;
+static bool g_forced_hash_seed = false;
+
+InternedSliceRefcount::~InternedSliceRefcount() {
+  slice_shard* shard = &g_shards[SHARD_IDX(this->hash)];
+  MutexLock lock(&shard->mu);
+  InternedSliceRefcount** prev_next;
+  InternedSliceRefcount* cur;
+  for (prev_next = &shard->strs[TABLE_IDX(this->hash, shard->capacity)],
+      cur = *prev_next;
+       cur != this; prev_next = &cur->bucket_next, cur = cur->bucket_next)
+    ;
+  *prev_next = cur->bucket_next;
+  shard->count--;
+}
+
+}  // namespace grpc_core
+
+static void grow_shard(slice_shard* shard) {
+  GPR_TIMER_SCOPE("grow_strtab", 0);
+
+  size_t capacity = shard->capacity * 2;
+  size_t i;
+  InternedSliceRefcount** strtab;
+  InternedSliceRefcount *s, *next;
+
+  strtab = static_cast<InternedSliceRefcount**>(
+      gpr_zalloc(sizeof(InternedSliceRefcount*) * capacity));
+
+  for (i = 0; i < shard->capacity; i++) {
+    for (s = shard->strs[i]; s; s = next) {
+      size_t idx = TABLE_IDX(s->hash, capacity);
+      next = s->bucket_next;
+      s->bucket_next = strtab[idx];
+      strtab[idx] = s;
+    }
+  }
+  gpr_free(shard->strs);
+  shard->strs = strtab;
+  shard->capacity = capacity;
+}
+
+grpc_core::InternedSlice::InternedSlice(InternedSliceRefcount* s) {
+  refcount = &s->base;
+  data.refcounted.bytes = reinterpret_cast<uint8_t*>(s + 1);
+  data.refcounted.length = s->length;
+}
+
+uint32_t grpc_slice_default_hash_impl(grpc_slice s) {
+  return gpr_murmur_hash3(GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s),
+                          grpc_core::g_hash_seed);
+}
+
+uint32_t grpc_static_slice_hash(grpc_slice s) {
+  return grpc_static_metadata_hash_values[GRPC_STATIC_METADATA_INDEX(s)];
+}
+
+int grpc_static_slice_eq(grpc_slice a, grpc_slice b) {
+  return GRPC_STATIC_METADATA_INDEX(a) == GRPC_STATIC_METADATA_INDEX(b);
+}
+
+uint32_t grpc_slice_hash(grpc_slice s) { return grpc_slice_hash_internal(s); }
+
+grpc_slice grpc_slice_maybe_static_intern(grpc_slice slice,
+                                          bool* returned_slice_is_different) {
+  if (GRPC_IS_STATIC_METADATA_STRING(slice)) {
+    return slice;
+  }
+
+  uint32_t hash = grpc_slice_hash_internal(slice);
+  for (uint32_t i = 0; i <= max_static_metadata_hash_probe; i++) {
+    static_metadata_hash_ent ent =
+        static_metadata_hash[(hash + i) % GPR_ARRAY_SIZE(static_metadata_hash)];
+    const grpc_core::StaticMetadataSlice* static_slice_table =
+        grpc_static_slice_table();
+    if (ent.hash == hash && ent.idx < GRPC_STATIC_MDSTR_COUNT &&
+        grpc_slice_eq_static_interned(slice, static_slice_table[ent.idx])) {
+      *returned_slice_is_different = true;
+      return static_slice_table[ent.idx];
+    }
+  }
+
+  return slice;
+}
+
+grpc_slice grpc_slice_intern(grpc_slice slice) {
+  /* TODO(arjunroy): At present, this is capable of returning either a static or
+     an interned slice. This yields weirdness like the constructor for
+     ManagedMemorySlice instantiating itself as an instance of a derived type
+     (StaticMetadataSlice or InternedSlice). Should reexamine. */
+  return grpc_core::ManagedMemorySlice(&slice);
+}
+
+// Attempt to see if the provided slice or string matches a static slice.
+// SliceArgs is either a const grpc_slice& or const pair<const char*, size_t>&.
+// In either case, hash is the pre-computed hash value.
+//
+// Returns: a matching static slice, or null.
+template <typename SliceArgs>
+static const grpc_core::StaticMetadataSlice* MatchStaticSlice(
+    uint32_t hash, const SliceArgs& args) {
+  for (uint32_t i = 0; i <= max_static_metadata_hash_probe; i++) {
+    static_metadata_hash_ent ent =
+        static_metadata_hash[(hash + i) % GPR_ARRAY_SIZE(static_metadata_hash)];
+    const grpc_core::StaticMetadataSlice* static_slice_table =
+        grpc_static_slice_table();
+    if (ent.hash == hash && ent.idx < GRPC_STATIC_MDSTR_COUNT &&
+        static_slice_table[ent.idx] == args) {
+      return &static_slice_table[ent.idx];
+    }
+  }
+  return nullptr;
+}
+
+// Helper methods to enable us to select appropriately overloaded slice methods
+// whether we're dealing with a slice, or a buffer with length, when interning
+// strings. Helpers for FindOrCreateInternedSlice().
+static const char* GetBuffer(const std::pair<const char*, size_t>& buflen) {
+  return buflen.first;
+}
+static size_t GetLength(const std::pair<const char*, size_t>& buflen) {
+  return buflen.second;
+}
+static const void* GetBuffer(const grpc_slice& slice) {
+  return GRPC_SLICE_START_PTR(slice);
+}
+static size_t GetLength(const grpc_slice& slice) {
+  return GRPC_SLICE_LENGTH(slice);
+}
+
+// Creates an interned slice for a string that does not currently exist in the
+// intern table. SliceArgs is either a const grpc_slice& or a const
+// pair<const char*, size_t>&. Hash is the pre-computed hash value. We must
+// already hold the shard lock. Helper for FindOrCreateInternedSlice().
+//
+// Returns: a newly interned slice.
+template <typename SliceArgs>
+static InternedSliceRefcount* InternNewStringLocked(slice_shard* shard,
+                                                    size_t shard_idx,
+                                                    uint32_t hash,
+                                                    const SliceArgs& args) {
+  /* string data goes after the internal_string header */
+  size_t len = GetLength(args);
+  const void* buffer = GetBuffer(args);
+  InternedSliceRefcount* s =
+      static_cast<InternedSliceRefcount*>(gpr_malloc(sizeof(*s) + len));
+  new (s) grpc_core::InternedSliceRefcount(len, hash, shard->strs[shard_idx]);
+  // TODO(arjunroy): Investigate why hpack tried to intern the nullptr string.
+  // https://github.com/grpc/grpc/pull/20110#issuecomment-526729282
+  if (len > 0) {
+    memcpy(reinterpret_cast<char*>(s + 1), buffer, len);
+  }
+  shard->strs[shard_idx] = s;
+  shard->count++;
+  if (shard->count > shard->capacity * 2) {
+    grow_shard(shard);
+  }
+  return s;
+}
+
+// Attempt to see if the provided slice or string matches an existing interned
+// slice. SliceArgs... is either a const grpc_slice& or a string and length. In
+// either case, hash is the pre-computed hash value.  We must already hold the
+// shard lock. Helper for FindOrCreateInternedSlice().
+//
+// Returns: a pre-existing matching static slice, or null.
+template <typename SliceArgs>
+static InternedSliceRefcount* MatchInternedSliceLocked(uint32_t hash,
+                                                       size_t idx,
+                                                       const SliceArgs& args) {
+  InternedSliceRefcount* s;
+  slice_shard* shard = &g_shards[SHARD_IDX(hash)];
+  /* search for an existing string */
+  for (s = shard->strs[idx]; s; s = s->bucket_next) {
+    if (s->hash == hash && grpc_core::InternedSlice(s) == args) {
+      if (s->refcnt.RefIfNonZero()) {
+        return s;
+      }
+    }
+  }
+  return nullptr;
+}
+
+// Attempt to see if the provided slice or string matches an existing interned
+// slice, and failing that, create an interned slice with its contents. Returns
+// either the existing matching interned slice or the newly created one.
+// SliceArgs is either a const grpc_slice& or const pair<const char*, size_t>&.
+// In either case, hash is the pre-computed hash value. We do not hold the
+// shard lock here, but do take it.
+//
+// Returns: an interned slice, either pre-existing/matched or newly created.
+template <typename SliceArgs>
+static InternedSliceRefcount* FindOrCreateInternedSlice(uint32_t hash,
+                                                        const SliceArgs& args) {
+  slice_shard* shard = &g_shards[SHARD_IDX(hash)];
+  gpr_mu_lock(&shard->mu);
+  const size_t idx = TABLE_IDX(hash, shard->capacity);
+  InternedSliceRefcount* s = MatchInternedSliceLocked(hash, idx, args);
+  if (s == nullptr) {
+    s = InternNewStringLocked(shard, idx, hash, args);
+  }
+  gpr_mu_unlock(&shard->mu);
+  return s;
+}
+
+grpc_core::ManagedMemorySlice::ManagedMemorySlice(const char* string)
+    : grpc_core::ManagedMemorySlice::ManagedMemorySlice(string,
+                                                        strlen(string)) {}
+
+grpc_core::ManagedMemorySlice::ManagedMemorySlice(const char* string,
+                                                  size_t len) {
+  GPR_TIMER_SCOPE("grpc_slice_intern", 0);
+  const uint32_t hash = gpr_murmur_hash3(string, len, g_hash_seed);
+  const StaticMetadataSlice* static_slice =
+      MatchStaticSlice(hash, std::pair<const char*, size_t>(string, len));
+  if (static_slice) {
+    *this = *static_slice;
+  } else {
+    *this = grpc_core::InternedSlice(FindOrCreateInternedSlice(
+        hash, std::pair<const char*, size_t>(string, len)));
+  }
+}
+
+grpc_core::ManagedMemorySlice::ManagedMemorySlice(const grpc_slice* slice_ptr) {
+  GPR_TIMER_SCOPE("grpc_slice_intern", 0);
+  const grpc_slice& slice = *slice_ptr;
+  if (GRPC_IS_STATIC_METADATA_STRING(slice)) {
+    *this = static_cast<const grpc_core::StaticMetadataSlice&>(slice);
+    return;
+  }
+  const uint32_t hash = grpc_slice_hash_internal(slice);
+  const StaticMetadataSlice* static_slice = MatchStaticSlice(hash, slice);
+  if (static_slice) {
+    *this = *static_slice;
+  } else {
+    *this = grpc_core::InternedSlice(FindOrCreateInternedSlice(hash, slice));
+  }
+}
+
+void grpc_test_only_set_slice_hash_seed(uint32_t seed) {
+  grpc_core::g_hash_seed = seed;
+  grpc_core::g_forced_hash_seed = true;
+}
+
+void grpc_slice_intern_init(void) {
+  if (!grpc_core::g_forced_hash_seed) {
+    grpc_core::g_hash_seed =
+        static_cast<uint32_t>(gpr_now(GPR_CLOCK_REALTIME).tv_nsec);
+  }
+  for (size_t i = 0; i < SHARD_COUNT; i++) {
+    slice_shard* shard = &g_shards[i];
+    gpr_mu_init(&shard->mu);
+    shard->count = 0;
+    shard->capacity = INITIAL_SHARD_CAPACITY;
+    shard->strs = static_cast<InternedSliceRefcount**>(
+        gpr_zalloc(sizeof(*shard->strs) * shard->capacity));
+  }
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(static_metadata_hash); i++) {
+    static_metadata_hash[i].hash = 0;
+    static_metadata_hash[i].idx = GRPC_STATIC_MDSTR_COUNT;
+  }
+  max_static_metadata_hash_probe = 0;
+  const grpc_core::StaticMetadataSlice* static_slice_table =
+      grpc_static_slice_table();
+  for (size_t i = 0; i < GRPC_STATIC_MDSTR_COUNT; i++) {
+    grpc_static_metadata_hash_values[i] =
+        grpc_slice_default_hash_internal(static_slice_table[i]);
+    for (size_t j = 0; j < GPR_ARRAY_SIZE(static_metadata_hash); j++) {
+      size_t slot = (grpc_static_metadata_hash_values[i] + j) %
+                    GPR_ARRAY_SIZE(static_metadata_hash);
+      if (static_metadata_hash[slot].idx == GRPC_STATIC_MDSTR_COUNT) {
+        static_metadata_hash[slot].hash = grpc_static_metadata_hash_values[i];
+        static_metadata_hash[slot].idx = static_cast<uint32_t>(i);
+        if (j > max_static_metadata_hash_probe) {
+          max_static_metadata_hash_probe = static_cast<uint32_t>(j);
+        }
+        break;
+      }
+    }
+  }
+  // Handle KV hash for all static mdelems.
+  for (size_t i = 0; i < GRPC_STATIC_MDELEM_COUNT; ++i) {
+    grpc_static_mdelem_table()[i].HashInit();
+  }
+}
+
+void grpc_slice_intern_shutdown(void) {
+  for (size_t i = 0; i < SHARD_COUNT; i++) {
+    slice_shard* shard = &g_shards[i];
+    gpr_mu_destroy(&shard->mu);
+    /* TODO(ctiller): GPR_ASSERT(shard->count == 0); */
+    if (shard->count != 0) {
+      gpr_log(GPR_DEBUG, "WARNING: %" PRIuPTR " metadata strings were leaked",
+              shard->count);
+      for (size_t j = 0; j < shard->capacity; j++) {
+        for (InternedSliceRefcount* s = shard->strs[j]; s; s = s->bucket_next) {
+          char* text = grpc_dump_slice(grpc_core::InternedSlice(s),
+                                       GPR_DUMP_HEX | GPR_DUMP_ASCII);
+          gpr_log(GPR_DEBUG, "LEAKED: %s", text);
+          gpr_free(text);
+        }
+      }
+      if (grpc_iomgr_abort_on_leaks()) {
+        abort();
+      }
+    }
+    gpr_free(shard->strs);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_internal.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_internal.h
new file mode 100644
index 0000000..e74aba9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_internal.h	
@@ -0,0 +1,350 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+#define GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <string.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+// Interned slices have specific fast-path operations for hashing. To inline
+// these operations, we need to forward declare them here.
+extern uint32_t grpc_static_metadata_hash_values[GRPC_STATIC_MDSTR_COUNT];
+
+// grpc_slice_refcount : A reference count for grpc_slice.
+//
+// Non-inlined grpc_slice objects are refcounted. Historically this was
+// implemented via grpc_slice_refcount, a C-style polymorphic class using a
+// manually managed vtable of operations. Subclasses would define their own
+// vtable; the 'virtual' methods (ref, unref, equals and hash) would simply call
+// the function pointers in the vtable as necessary.
+//
+// Unfortunately, this leads to some inefficiencies in the generated code that
+// can be improved upon. For example, equality checking for interned slices is a
+// simple equality check on the refcount pointer. With the vtable approach, this
+// would translate to roughly the following (high-level) instructions:
+//
+// grpc_slice_equals(slice1, slice2):
+//   load vtable->eq -> eq_func
+//   call eq_func(slice1, slice2)
+//
+// interned_slice_equals(slice1, slice2)
+//   load slice1.ref -> r1
+//   load slice2.ref -> r2
+//   cmp r1, r2 -> retval
+//   ret retval
+//
+// This leads to a function call for a function defined in another translation
+// unit, which imposes memory barriers, which reduces the compiler's ability to
+// optimize (in addition to the added overhead of call/ret). Additionally, it
+// may be harder to reason about branch prediction when we're jumping to
+// essentially arbitrarily provided function pointers.
+//
+// In addition, it is arguable that while virtualization was helpful for
+// Equals()/Hash() methods, that it was fundamentally unnecessary for
+// Ref()/Unref().
+//
+// Instead, grpc_slice_refcount provides the same functionality as the C-style
+// virtual class, but in a de-virtualized manner - Eq(), Hash(), Ref() and
+// Unref() are provided within this header file. Fastpaths for Eq()/Hash()
+// (interned and static metadata slices), as well as the Ref() operation, can
+// all be inlined without any memory barriers.
+//
+// It does this by:
+// 1. Using grpc_core::RefCount<> (header-only) for Ref/Unref. Two special cases
+//    need support: No-op ref/unref (eg. static metadata slices) and stream
+//    slice references (where all the slices share the streamref). This is in
+//    addition to the normal case of '1 slice, 1 ref'.
+//    To support these cases, we explicitly track a nullable pointer to the
+//    underlying RefCount<>. No-op ref/unref is used by checking the pointer for
+//    null, and doing nothing if it is. Both stream slice refs and 'normal'
+//    slices use the same path for Ref/Unref (by targeting the non-null
+//    pointer).
+//
+// 2. introducing the notion of grpc_slice_refcount::Type. This describes if a
+//    slice ref is used by a static metadata slice, an interned slice, or other
+//    slices. We switch on the slice ref type in order to provide fastpaths for
+//    Equals() and Hash().
+//
+// In total, this saves us roughly 1-2% latency for unary calls, with smaller
+// calls benefitting. The effect is present, but not as useful, for larger calls
+// where the cost of sending the data dominates.
+// TODO(arjunroy): Investigate if this can be removed with strongly typed
+// grpc_slices.
+struct grpc_slice_refcount {
+ public:
+  enum class Type {
+    STATIC,    // Refcount for a static metadata slice.
+    INTERNED,  // Refcount for an interned slice.
+    NOP,       // No-Op
+    REGULAR    // Refcount for non-static-metadata, non-interned slices.
+  };
+  typedef void (*DestroyerFn)(void*);
+
+  grpc_slice_refcount() = default;
+
+  explicit grpc_slice_refcount(Type t) : ref_type_(t) {}
+
+  explicit grpc_slice_refcount(grpc_slice_refcount* sub) : sub_refcount_(sub) {}
+  // Regular constructor for grpc_slice_refcount.
+  //
+  // Parameters:
+  //  1. grpc_slice_refcount::Type type
+  //  Whether we are the refcount for a static
+  //  metadata slice, an interned slice, or any other kind of slice.
+  //
+  //  2. RefCount* ref
+  //  The pointer to the actual underlying grpc_core::RefCount. Rather than
+  //  performing struct offset computations as in the original implementation to
+  //  get to the refcount, which requires a virtual method, we devirtualize by
+  //  using a nullable pointer to allow a single pair of Ref/Unref methods.
+  //
+  //  3. DestroyerFn destroyer_fn
+  //  Called when the refcount goes to 0, with destroyer_arg as parameter.
+  //
+  //  4. void* destroyer_arg
+  //  Argument for the virtualized destructor.
+  //
+  //  5. grpc_slice_refcount* sub
+  //  Argument used for interned slices.
+  grpc_slice_refcount(grpc_slice_refcount::Type type, grpc_core::RefCount* ref,
+                      DestroyerFn destroyer_fn, void* destroyer_arg,
+                      grpc_slice_refcount* sub)
+      : ref_(ref),
+        ref_type_(type),
+        sub_refcount_(sub),
+        dest_fn_(destroyer_fn),
+        destroy_fn_arg_(destroyer_arg) {}
+  // Initializer for static refcounts.
+  grpc_slice_refcount(grpc_slice_refcount* sub, Type type)
+      : ref_type_(type), sub_refcount_(sub) {}
+
+  Type GetType() const { return ref_type_; }
+
+  int Eq(const grpc_slice& a, const grpc_slice& b);
+
+  uint32_t Hash(const grpc_slice& slice);
+  void Ref() {
+    if (ref_ == nullptr) return;
+    ref_->RefNonZero();
+  }
+  void Unref() {
+    if (ref_ == nullptr) return;
+    if (ref_->Unref()) {
+      dest_fn_(destroy_fn_arg_);
+    }
+  }
+
+  grpc_slice_refcount* sub_refcount() const { return sub_refcount_; }
+
+ private:
+  grpc_core::RefCount* ref_ = nullptr;
+  const Type ref_type_ = Type::REGULAR;
+  grpc_slice_refcount* sub_refcount_ = this;
+  DestroyerFn dest_fn_ = nullptr;
+  void* destroy_fn_arg_ = nullptr;
+};
+
+namespace grpc_core {
+
+struct StaticSliceRefcount {
+  static grpc_slice_refcount kStaticSubRefcount;
+
+  StaticSliceRefcount(uint32_t index)
+      : base(&kStaticSubRefcount, grpc_slice_refcount::Type::STATIC),
+        index(index) {}
+
+  grpc_slice_refcount base;
+  const uint32_t index;
+};
+
+extern grpc_slice_refcount kNoopRefcount;
+
+struct InternedSliceRefcount {
+  static void Destroy(void* arg) {
+    auto* rc = static_cast<InternedSliceRefcount*>(arg);
+    rc->~InternedSliceRefcount();
+    gpr_free(rc);
+  }
+
+  InternedSliceRefcount(size_t length, uint32_t hash,
+                        InternedSliceRefcount* bucket_next)
+      : base(grpc_slice_refcount::Type::INTERNED, &refcnt, Destroy, this, &sub),
+        sub(grpc_slice_refcount::Type::REGULAR, &refcnt, Destroy, this, &sub),
+        length(length),
+        hash(hash),
+        bucket_next(bucket_next) {}
+
+  ~InternedSliceRefcount();
+
+  grpc_slice_refcount base;
+  grpc_slice_refcount sub;
+  const size_t length;
+  RefCount refcnt;
+  const uint32_t hash;
+  InternedSliceRefcount* bucket_next;
+};
+
+}  // namespace grpc_core
+
+inline size_t grpc_refcounted_slice_length(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return slice.data.refcounted.length;
+}
+
+inline const uint8_t* grpc_refcounted_slice_data(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return slice.data.refcounted.bytes;
+}
+
+inline int grpc_slice_refcount::Eq(const grpc_slice& a, const grpc_slice& b) {
+  GPR_DEBUG_ASSERT(a.refcount != nullptr);
+  GPR_DEBUG_ASSERT(a.refcount == this);
+  switch (ref_type_) {
+    case Type::STATIC:
+      GPR_DEBUG_ASSERT(
+          (GRPC_STATIC_METADATA_INDEX(a) == GRPC_STATIC_METADATA_INDEX(b)) ==
+          (a.refcount == b.refcount));
+    case Type::INTERNED:
+      return a.refcount == b.refcount;
+    case Type::NOP:
+    case Type::REGULAR:
+      break;
+  }
+  if (grpc_refcounted_slice_length(a) != GRPC_SLICE_LENGTH(b)) return false;
+  if (grpc_refcounted_slice_length(a) == 0) return true;
+  return 0 == memcmp(grpc_refcounted_slice_data(a), GRPC_SLICE_START_PTR(b),
+                     grpc_refcounted_slice_length(a));
+}
+
+inline uint32_t grpc_slice_refcount::Hash(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  GPR_DEBUG_ASSERT(slice.refcount == this);
+  switch (ref_type_) {
+    case Type::STATIC:
+      return ::grpc_static_metadata_hash_values[GRPC_STATIC_METADATA_INDEX(
+          slice)];
+    case Type::INTERNED:
+      return reinterpret_cast<grpc_core::InternedSliceRefcount*>(slice.refcount)
+          ->hash;
+    case Type::NOP:
+    case Type::REGULAR:
+      break;
+  }
+  return gpr_murmur_hash3(grpc_refcounted_slice_data(slice),
+                          grpc_refcounted_slice_length(slice),
+                          grpc_core::g_hash_seed);
+}
+
+inline const grpc_slice& grpc_slice_ref_internal(const grpc_slice& slice) {
+  if (slice.refcount) {
+    slice.refcount->Ref();
+  }
+  return slice;
+}
+
+inline void grpc_slice_unref_internal(const grpc_slice& slice) {
+  if (slice.refcount) {
+    slice.refcount->Unref();
+  }
+}
+
+void grpc_slice_buffer_reset_and_unref_internal(grpc_slice_buffer* sb);
+void grpc_slice_buffer_partial_unref_internal(grpc_slice_buffer* sb,
+                                              size_t idx);
+void grpc_slice_buffer_destroy_internal(grpc_slice_buffer* sb);
+
+// Returns a pointer to the first slice in the slice buffer without giving
+// ownership to or a reference count on that slice.
+inline grpc_slice* grpc_slice_buffer_peek_first(grpc_slice_buffer* sb) {
+  GPR_DEBUG_ASSERT(sb->count > 0);
+  return &sb->slices[0];
+}
+
+// Removes the first slice from the slice buffer.
+void grpc_slice_buffer_remove_first(grpc_slice_buffer* sb);
+
+// Calls grpc_slice_sub with the given parameters on the first slice.
+void grpc_slice_buffer_sub_first(grpc_slice_buffer* sb, size_t begin,
+                                 size_t end);
+
+/* Check if a slice is interned */
+bool grpc_slice_is_interned(const grpc_slice& slice);
+inline bool grpc_slice_is_interned(const grpc_slice& slice) {
+  return (slice.refcount &&
+          (slice.refcount->GetType() == grpc_slice_refcount::Type::INTERNED ||
+           slice.refcount->GetType() == grpc_slice_refcount::Type::STATIC));
+}
+
+inline bool grpc_slice_static_interned_equal(const grpc_slice& a,
+                                             const grpc_slice& b) {
+  GPR_DEBUG_ASSERT(grpc_slice_is_interned(a) && grpc_slice_is_interned(b));
+  return a.refcount == b.refcount;
+}
+
+void grpc_slice_intern_init(void);
+void grpc_slice_intern_shutdown(void);
+void grpc_test_only_set_slice_hash_seed(uint32_t key);
+// if slice matches a static slice, returns the static slice
+// otherwise returns the passed in slice (without reffing it)
+// used for surface boundaries where we might receive an un-interned static
+// string
+grpc_slice grpc_slice_maybe_static_intern(grpc_slice slice,
+                                          bool* returned_slice_is_different);
+uint32_t grpc_static_slice_hash(grpc_slice s);
+int grpc_static_slice_eq(grpc_slice a, grpc_slice b);
+
+inline uint32_t grpc_slice_hash_refcounted(const grpc_slice& s) {
+  GPR_DEBUG_ASSERT(s.refcount != nullptr);
+  return s.refcount->Hash(s);
+}
+
+inline uint32_t grpc_slice_default_hash_internal(const grpc_slice& s) {
+  return gpr_murmur_hash3(GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s),
+                          grpc_core::g_hash_seed);
+}
+
+inline uint32_t grpc_slice_hash_internal(const grpc_slice& s) {
+  return s.refcount == nullptr ? grpc_slice_default_hash_internal(s)
+                               : grpc_slice_hash_refcounted(s);
+}
+
+grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char> p,
+                                        size_t len);
+grpc_slice grpc_slice_from_moved_string(grpc_core::UniquePtr<char> p);
+
+// Returns the memory used by this slice, not counting the slice structure
+// itself. This means that inlined and slices from static strings will return
+// 0. All other slices will return the size of the allocated chars.
+size_t grpc_slice_memory_usage(grpc_slice s);
+
+grpc_core::UnmanagedMemorySlice grpc_slice_sub_no_ref(
+    const grpc_core::UnmanagedMemorySlice& source, size_t begin, size_t end);
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_INTERNAL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.cc
new file mode 100644
index 0000000..7887e03
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.cc	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+char* grpc_dump_slice(const grpc_slice& s, uint32_t flags) {
+  return gpr_dump(reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s),
+                  GRPC_SLICE_LENGTH(s), flags);
+}
+
+grpc_slice grpc_dump_slice_to_slice(const grpc_slice& s, uint32_t flags) {
+  size_t len;
+  grpc_core::UniquePtr<char> ptr(
+      gpr_dump_return_len(reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s),
+                          GRPC_SLICE_LENGTH(s), flags, &len));
+  return grpc_slice_from_moved_buffer(std::move(ptr), len);
+}
+
+/** Finds the initial (\a begin) and final (\a end) offsets of the next
+ * substring from \a str + \a read_offset until the next \a sep or the end of \a
+ * str.
+ *
+ * Returns 1 and updates \a begin and \a end. Returns 0 otherwise. */
+static int slice_find_separator_offset(const grpc_slice str, const char* sep,
+                                       const size_t read_offset, size_t* begin,
+                                       size_t* end) {
+  size_t i;
+  const uint8_t* str_ptr = GRPC_SLICE_START_PTR(str) + read_offset;
+  const size_t str_len = GRPC_SLICE_LENGTH(str) - read_offset;
+  const size_t sep_len = strlen(sep);
+  if (str_len < sep_len) {
+    return 0;
+  }
+
+  for (i = 0; i <= str_len - sep_len; i++) {
+    if (memcmp(str_ptr + i, sep, sep_len) == 0) {
+      *begin = read_offset;
+      *end = read_offset + i;
+      return 1;
+    }
+  }
+  return 0;
+}
+
+static void skip_leading_trailing_spaces(const uint8_t* str_buffer,
+                                         size_t* begin, size_t* end) {
+  while (*begin < *end && str_buffer[*begin] == ' ') {
+    (*begin)++;
+  }
+  while (*begin < *end && str_buffer[*end - 1] == ' ') {
+    (*end)--;
+  }
+}
+
+static void grpc_slice_split_inner(grpc_slice str, const char* sep,
+                                   grpc_slice_buffer* dst, bool no_space) {
+  const size_t sep_len = strlen(sep);
+  size_t begin, end;
+  const uint8_t* str_buffer = GRPC_SLICE_START_PTR(str);
+  size_t sep_pos;
+
+  GPR_ASSERT(sep_len > 0);
+
+  if (slice_find_separator_offset(str, sep, 0, &begin, &end) != 0) {
+    do {
+      sep_pos = end;
+      if (no_space) {
+        skip_leading_trailing_spaces(str_buffer, &begin, &end);
+      }
+      grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+    } while (slice_find_separator_offset(str, sep, sep_pos + sep_len, &begin,
+                                         &end) != 0);
+    begin = sep_pos + sep_len;
+    end = GRPC_SLICE_LENGTH(str);
+    if (no_space) {
+      skip_leading_trailing_spaces(str_buffer, &begin, &end);
+    }
+    grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+  } else { /* no sep found, add whole input */
+    begin = 0;
+    end = GRPC_SLICE_LENGTH(str);
+    if (no_space) {
+      skip_leading_trailing_spaces(str_buffer, &begin, &end);
+    }
+    grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+  }
+}
+
+void grpc_slice_split(grpc_slice str, const char* sep, grpc_slice_buffer* dst) {
+  grpc_slice_split_inner(str, sep, dst, false);
+}
+
+void grpc_slice_split_without_space(grpc_slice str, const char* sep,
+                                    grpc_slice_buffer* dst) {
+  grpc_slice_split_inner(str, sep, dst, true);
+}
+
+bool grpc_parse_slice_to_uint32(grpc_slice str, uint32_t* result) {
+  return gpr_parse_bytes_to_uint32(
+             reinterpret_cast<const char*> GRPC_SLICE_START_PTR(str),
+             GRPC_SLICE_LENGTH(str), result) != 0;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.h
new file mode 100644
index 0000000..6551a6d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_string_helpers.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H
+#define GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+
+#include "src/core/lib/gpr/string.h"
+
+/* Calls gpr_dump on a slice. */
+char* grpc_dump_slice(const grpc_slice& slice, uint32_t flags);
+/* Calls gpr_dump on a slice and returns the result as a slice. */
+grpc_slice grpc_dump_slice_to_slice(const grpc_slice& slice, uint32_t flags);
+
+/** Split \a str by the separator \a sep. Results are stored in \a dst, which
+ * should be a properly initialized instance. */
+void grpc_slice_split(grpc_slice str, const char* sep, grpc_slice_buffer* dst);
+
+/** Split \a str by the separator \a sep and remove the leading and trailing
+ * spaces of each resulting token. Results are stored in \a dst, which should be
+ * a properly initialized instance. */
+void grpc_slice_split_without_space(grpc_slice str, const char* sep,
+                                    grpc_slice_buffer* dst);
+
+bool grpc_parse_slice_to_uint32(grpc_slice str, uint32_t* result);
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_STRING_HELPERS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_utils.h
new file mode 100644
index 0000000..b203a16
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_utils.h	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2019 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_UTILS_H
+#define GRPC_CORE_LIB_SLICE_SLICE_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cstring>
+
+#include <grpc/slice.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+
+namespace grpc_core {
+extern uint32_t g_hash_seed;
+}  // namespace grpc_core
+
+// When we compare two slices, and we know the latter is not inlined, we can
+// short circuit our comparison operator. We specifically use differs()
+// semantics instead of equals() semantics due to more favourable code
+// generation when using differs(). Specifically, we may use the output of
+// grpc_slice_differs_refcounted for control flow. If we use differs()
+// semantics, we end with a tailcall to memcmp(). If we use equals() semantics,
+// we need to invert the result that memcmp provides us, which costs several
+// instructions to do so. If we're using the result for control flow (i.e.
+// branching based on the output) then we're just performing the extra
+// operations to invert the result pointlessly. Concretely, we save 6 ops on
+// x86-64/clang with differs().
+int grpc_slice_differs_refcounted(const grpc_slice& a,
+                                  const grpc_slice& b_not_inline);
+
+// When we compare two slices, and we *know* that one of them is static or
+// interned, we can short circuit our slice equality function. The second slice
+// here must be static or interned; slice a can be any slice, inlined or not.
+inline bool grpc_slice_eq_static_interned(const grpc_slice& a,
+                                          const grpc_slice& b_static_interned) {
+  if (a.refcount == b_static_interned.refcount) {
+    return true;
+  }
+  return !grpc_slice_differs_refcounted(a, b_static_interned);
+}
+
+// TODO(arjunroy): These type declarations ought to be in
+// src/core/lib/slice/slice_internal.h instead; they are here due to a circular
+// header depedency between slice_internal.h and
+// src/core/lib/transport/metadata.h. We need to fix this circular reference and
+// when we do, move these type declarations.
+//
+// Internal slice type declarations.
+// Externally, a grpc_slice is a grpc_slice is a grpc_slice.
+// Internally, we may have heap allocated slices, static slices, interned
+// slices, and inlined slices. If we know the specific type of slice
+// we're dealing with, we can save cycles (e.g. fast-paths when we know we don't
+// need to take a reference on a slice). Rather than introducing new methods
+// ad-hoc in these cases, we rely on type-system backed overloads to keep
+// internal APIs clean.
+//
+// For each overload, the definition and layout of the underlying slice does not
+// change; this is purely type-system information.
+namespace grpc_core {
+
+// There are two main types of slices: those that have their memory
+// managed by the slice library and those that do not.
+//
+// The following types of slices are not managed:
+// - inlined slices (i.e., refcount is null)
+// - slices that have a custom refcount type (i.e., not STATIC or INTERNED)
+// - slices where the memory is managed by some external agent. The slice is not
+//   ref-counted by grpc, and the programmer is responsible for ensuring the
+//   data is valid for the duration of the period that grpc may access it.
+//
+// The following types of slices are managed:
+// - static metadata slices (i.e., refcount type is STATIC)
+// - interned slices (i.e., refcount type is INTERNED)
+//
+// This categorization is reflected in the following hierarchy:
+//
+// - grpc_slice
+// > - UnmanagedMemorySlice
+//   > - ExternallyManagedSlice
+//   - ManagedMemorySlice
+//   > - InternedSlice
+//     - StaticMetadataSlice
+//
+struct ManagedMemorySlice : public grpc_slice {
+  ManagedMemorySlice() {
+    refcount = nullptr;
+    data.refcounted.bytes = nullptr;
+    data.refcounted.length = 0;
+  }
+  explicit ManagedMemorySlice(const char* string);
+  ManagedMemorySlice(const char* buf, size_t len);
+  explicit ManagedMemorySlice(const grpc_slice* slice);
+  bool operator==(const grpc_slice& other) const {
+    if (refcount == other.refcount) {
+      return true;
+    }
+    return !grpc_slice_differs_refcounted(other, *this);
+  }
+  bool operator!=(const grpc_slice& other) const { return !(*this == other); }
+  bool operator==(std::pair<const char*, size_t> buflen) const {
+    return data.refcounted.length == buflen.second && buflen.first != nullptr &&
+           memcmp(buflen.first, data.refcounted.bytes, buflen.second) == 0;
+  }
+};
+struct UnmanagedMemorySlice : public grpc_slice {
+  // TODO(arjunroy): Can we use a default=false param instead of this enum?
+  enum class ForceHeapAllocation {};
+  UnmanagedMemorySlice() {
+    refcount = nullptr;
+    data.inlined.length = 0;
+  }
+  explicit UnmanagedMemorySlice(const char* source);
+  UnmanagedMemorySlice(const char* source, size_t length);
+  // The first constructor creates a slice that may be heap allocated, or
+  // inlined in the slice structure if length is small enough
+  // (< GRPC_SLICE_INLINED_SIZE). The second constructor forces heap alloc.
+  explicit UnmanagedMemorySlice(size_t length);
+  explicit UnmanagedMemorySlice(size_t length, const ForceHeapAllocation&) {
+    HeapInit(length);
+  }
+
+ private:
+  void HeapInit(size_t length);
+};
+
+extern grpc_slice_refcount kNoopRefcount;
+
+struct ExternallyManagedSlice : public UnmanagedMemorySlice {
+  ExternallyManagedSlice()
+      : ExternallyManagedSlice(&kNoopRefcount, 0, nullptr) {}
+  explicit ExternallyManagedSlice(const char* s)
+      : ExternallyManagedSlice(s, strlen(s)) {}
+  ExternallyManagedSlice(const void* s, size_t len)
+      : ExternallyManagedSlice(
+            &kNoopRefcount, len,
+            reinterpret_cast<uint8_t*>(const_cast<void*>(s))) {}
+  ExternallyManagedSlice(grpc_slice_refcount* ref, size_t length,
+                         uint8_t* bytes) {
+    refcount = ref;
+    data.refcounted.length = length;
+    data.refcounted.bytes = bytes;
+  }
+  bool operator==(const grpc_slice& other) const {
+    return data.refcounted.length == GRPC_SLICE_LENGTH(other) &&
+           memcmp(data.refcounted.bytes, GRPC_SLICE_START_PTR(other),
+                  data.refcounted.length) == 0;
+  }
+  bool operator!=(const grpc_slice& other) const { return !(*this == other); }
+  uint32_t Hash() {
+    return gpr_murmur_hash3(data.refcounted.bytes, data.refcounted.length,
+                            g_hash_seed);
+  }
+};
+
+struct StaticMetadataSlice : public ManagedMemorySlice {
+  StaticMetadataSlice(grpc_slice_refcount* ref, size_t length,
+                      const uint8_t* bytes) {
+    refcount = ref;
+    data.refcounted.length = length;
+    // NB: grpc_slice may or may not point to a static slice, but we are
+    // definitely pointing to static data here. Since we are not changing
+    // the underlying C-type, we need a const_cast here.
+    data.refcounted.bytes = const_cast<uint8_t*>(bytes);
+  }
+};
+
+struct InternedSliceRefcount;
+struct InternedSlice : public ManagedMemorySlice {
+  explicit InternedSlice(InternedSliceRefcount* s);
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_weak_hash_table.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_weak_hash_table.h
new file mode 100644
index 0000000..931e405
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/slice/slice_weak_hash_table.h	
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H
+#define GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+/// Weak hash table implementation.
+///
+/// This entries in this table are weak: an entry may be removed at any time due
+/// to a number of reasons: memory pressure, hash collisions, etc.
+///
+/// The keys are \a grpc_slice objects. The values are of arbitrary type.
+///
+/// This class is thread unsafe. It's the caller's responsibility to ensure
+/// proper locking when accessing its methods.
+
+namespace grpc_core {
+
+template <typename T, size_t Size>
+class SliceWeakHashTable : public RefCounted<SliceWeakHashTable<T, Size>> {
+ public:
+  /// Creates a new table of at most \a size entries.
+  static RefCountedPtr<SliceWeakHashTable> Create() {
+    return MakeRefCounted<SliceWeakHashTable<T, Size>>();
+  }
+
+  /// Use Create function instead of using this directly.
+  SliceWeakHashTable() = default;
+  ~SliceWeakHashTable() = default;
+
+  /// Add a mapping from \a key to \a value, taking ownership of \a key. This
+  /// operation will always succeed. It may discard older entries.
+  void Add(const grpc_slice& key, T value) {
+    const size_t idx = grpc_slice_hash_internal(key) % Size;
+    entries_[idx].Set(key, std::move(value));
+    return;
+  }
+
+  /// Returns the value from the table associated with / \a key or null if not
+  /// found.
+  const T* Get(const grpc_slice& key) const {
+    const size_t idx = grpc_slice_hash_internal(key) % Size;
+    const auto& entry = entries_[idx];
+    return grpc_slice_eq(entry.key(), key) ? entry.value() : nullptr;
+  }
+
+ private:
+  /// The type of the table "rows".
+  class Entry {
+   public:
+    Entry() = default;
+    ~Entry() {
+      if (is_set_) grpc_slice_unref_internal(key_);
+    }
+    const grpc_slice& key() const { return key_; }
+
+    /// Return the entry's value, or null if unset.
+    const T* value() const {
+      if (!is_set_) return nullptr;
+      return &value_;
+    }
+
+    /// Set the \a key and \a value (which is moved) for the entry.
+    void Set(const grpc_slice& key, T&& value) {
+      if (is_set_) grpc_slice_unref_internal(key_);
+      key_ = key;
+      value_ = std::move(value);
+      is_set_ = true;
+    }
+
+   private:
+    grpc_slice key_;
+    T value_;
+    bool is_set_ = false;
+  };
+
+  Entry entries_[Size];
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_SLICE_SLICE_WEAK_HASH_TABLE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.cc
new file mode 100644
index 0000000..bab5a79
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.cc	
@@ -0,0 +1,24 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/surface/api_trace.h"
+
+grpc_core::TraceFlag grpc_api_trace(false, "api");
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.h
new file mode 100644
index 0000000..51d1f52
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/api_trace.h	
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_API_TRACE_H
+#define GRPC_CORE_LIB_SURFACE_API_TRACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/debug/trace.h"
+
+extern grpc_core::TraceFlag grpc_api_trace;
+
+/* Provide unwrapping macros because we're in C89 and variadic macros weren't
+   introduced until C99... */
+#define GRPC_API_TRACE_UNWRAP0()
+#define GRPC_API_TRACE_UNWRAP1(a) , a
+#define GRPC_API_TRACE_UNWRAP2(a, b) , a, b
+#define GRPC_API_TRACE_UNWRAP3(a, b, c) , a, b, c
+#define GRPC_API_TRACE_UNWRAP4(a, b, c, d) , a, b, c, d
+#define GRPC_API_TRACE_UNWRAP5(a, b, c, d, e) , a, b, c, d, e
+#define GRPC_API_TRACE_UNWRAP6(a, b, c, d, e, f) , a, b, c, d, e, f
+#define GRPC_API_TRACE_UNWRAP7(a, b, c, d, e, f, g) , a, b, c, d, e, f, g
+#define GRPC_API_TRACE_UNWRAP8(a, b, c, d, e, f, g, h) , a, b, c, d, e, f, g, h
+#define GRPC_API_TRACE_UNWRAP9(a, b, c, d, e, f, g, h, i) \
+  , a, b, c, d, e, f, g, h, i
+#define GRPC_API_TRACE_UNWRAP10(a, b, c, d, e, f, g, h, i, j) \
+  , a, b, c, d, e, f, g, h, i, j
+
+/* Due to the limitations of C89's preprocessor, the arity of the var-arg list
+   'nargs' must be specified. */
+#define GRPC_API_TRACE(fmt, nargs, args)                      \
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) {              \
+    gpr_log(GPR_INFO, fmt GRPC_API_TRACE_UNWRAP##nargs args); \
+  }
+
+#endif /* GRPC_CORE_LIB_SURFACE_API_TRACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer.cc
new file mode 100644
index 0000000..6246796
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer.cc	
@@ -0,0 +1,92 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slices,
+                                              size_t nslices) {
+  return grpc_raw_compressed_byte_buffer_create(slices, nslices,
+                                                GRPC_COMPRESS_NONE);
+}
+
+grpc_byte_buffer* grpc_raw_compressed_byte_buffer_create(
+    grpc_slice* slices, size_t nslices,
+    grpc_compression_algorithm compression) {
+  size_t i;
+  grpc_byte_buffer* bb =
+      static_cast<grpc_byte_buffer*>(gpr_malloc(sizeof(grpc_byte_buffer)));
+  bb->type = GRPC_BB_RAW;
+  bb->data.raw.compression = compression;
+  grpc_slice_buffer_init(&bb->data.raw.slice_buffer);
+  for (i = 0; i < nslices; i++) {
+    grpc_slice_ref_internal(slices[i]);
+    grpc_slice_buffer_add(&bb->data.raw.slice_buffer, slices[i]);
+  }
+  return bb;
+}
+
+grpc_byte_buffer* grpc_raw_byte_buffer_from_reader(
+    grpc_byte_buffer_reader* reader) {
+  grpc_byte_buffer* bb =
+      static_cast<grpc_byte_buffer*>(gpr_malloc(sizeof(grpc_byte_buffer)));
+  grpc_slice slice;
+  bb->type = GRPC_BB_RAW;
+  bb->data.raw.compression = GRPC_COMPRESS_NONE;
+  grpc_slice_buffer_init(&bb->data.raw.slice_buffer);
+
+  while (grpc_byte_buffer_reader_next(reader, &slice)) {
+    grpc_slice_buffer_add(&bb->data.raw.slice_buffer, slice);
+  }
+  return bb;
+}
+
+grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) {
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      return grpc_raw_compressed_byte_buffer_create(
+          bb->data.raw.slice_buffer.slices, bb->data.raw.slice_buffer.count,
+          bb->data.raw.compression);
+  }
+  GPR_UNREACHABLE_CODE(return nullptr);
+}
+
+void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) {
+  if (!bb) return;
+  grpc_core::ExecCtx exec_ctx;
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      grpc_slice_buffer_destroy_internal(&bb->data.raw.slice_buffer);
+      break;
+  }
+  gpr_free(bb);
+}
+
+size_t grpc_byte_buffer_length(grpc_byte_buffer* bb) {
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      return bb->data.raw.slice_buffer.length;
+  }
+  GPR_UNREACHABLE_CODE(return 0);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer_reader.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer_reader.cc
new file mode 100644
index 0000000..ed8ecc4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/byte_buffer_reader.cc	
@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer_reader.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+static int is_compressed(grpc_byte_buffer* buffer) {
+  switch (buffer->type) {
+    case GRPC_BB_RAW:
+      if (buffer->data.raw.compression == GRPC_COMPRESS_NONE) {
+        return 0 /* GPR_FALSE */;
+      }
+      break;
+  }
+  return 1 /* GPR_TRUE */;
+}
+
+int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
+                                 grpc_byte_buffer* buffer) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_slice_buffer decompressed_slices_buffer;
+  reader->buffer_in = buffer;
+  switch (reader->buffer_in->type) {
+    case GRPC_BB_RAW:
+      grpc_slice_buffer_init(&decompressed_slices_buffer);
+      if (is_compressed(reader->buffer_in)) {
+        if (grpc_msg_decompress(
+
+                grpc_compression_algorithm_to_message_compression_algorithm(
+                    reader->buffer_in->data.raw.compression),
+                &reader->buffer_in->data.raw.slice_buffer,
+                &decompressed_slices_buffer) == 0) {
+          gpr_log(GPR_ERROR,
+                  "Unexpected error decompressing data for algorithm with enum "
+                  "value '%d'.",
+                  reader->buffer_in->data.raw.compression);
+          memset(reader, 0, sizeof(*reader));
+          return 0;
+        } else { /* all fine */
+          reader->buffer_out =
+              grpc_raw_byte_buffer_create(decompressed_slices_buffer.slices,
+                                          decompressed_slices_buffer.count);
+        }
+        grpc_slice_buffer_destroy_internal(&decompressed_slices_buffer);
+      } else { /* not compressed, use the input buffer as output */
+        reader->buffer_out = reader->buffer_in;
+      }
+      reader->current.index = 0;
+      break;
+  }
+
+  return 1;
+}
+
+void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader* reader) {
+  switch (reader->buffer_in->type) {
+    case GRPC_BB_RAW:
+      /* keeping the same if-else structure as in the init function */
+      if (is_compressed(reader->buffer_in)) {
+        grpc_byte_buffer_destroy(reader->buffer_out);
+      }
+      break;
+  }
+}
+
+int grpc_byte_buffer_reader_peek(grpc_byte_buffer_reader* reader,
+                                 grpc_slice** slice) {
+  switch (reader->buffer_in->type) {
+    case GRPC_BB_RAW: {
+      grpc_slice_buffer* slice_buffer;
+      slice_buffer = &reader->buffer_out->data.raw.slice_buffer;
+      if (reader->current.index < slice_buffer->count) {
+        *slice = &slice_buffer->slices[reader->current.index];
+        reader->current.index += 1;
+        return 1;
+      }
+      break;
+    }
+  }
+  return 0;
+}
+
+int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
+                                 grpc_slice* slice) {
+  switch (reader->buffer_in->type) {
+    case GRPC_BB_RAW: {
+      grpc_slice_buffer* slice_buffer;
+      slice_buffer = &reader->buffer_out->data.raw.slice_buffer;
+      if (reader->current.index < slice_buffer->count) {
+        *slice = grpc_slice_ref_internal(
+            slice_buffer->slices[reader->current.index]);
+        reader->current.index += 1;
+        return 1;
+      }
+      break;
+    }
+  }
+  return 0;
+}
+
+grpc_slice grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader* reader) {
+  grpc_slice in_slice;
+  size_t bytes_read = 0;
+  const size_t input_size = grpc_byte_buffer_length(reader->buffer_out);
+  grpc_slice out_slice = GRPC_SLICE_MALLOC(input_size);
+  uint8_t* const outbuf = GRPC_SLICE_START_PTR(out_slice); /* just an alias */
+
+  grpc_core::ExecCtx exec_ctx;
+  while (grpc_byte_buffer_reader_next(reader, &in_slice) != 0) {
+    const size_t slice_length = GRPC_SLICE_LENGTH(in_slice);
+    memcpy(&(outbuf[bytes_read]), GRPC_SLICE_START_PTR(in_slice), slice_length);
+    bytes_read += slice_length;
+    grpc_slice_unref_internal(in_slice);
+    GPR_ASSERT(bytes_read <= input_size);
+  }
+
+  return out_slice;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.cc
new file mode 100644
index 0000000..fcebe9b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.cc	
@@ -0,0 +1,2045 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/time_precise.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/slice/slice_utils.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/call_test_only.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/surface/validate_metadata.h"
+#include "src/core/lib/transport/error_utils.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/status_metadata.h"
+#include "src/core/lib/transport/transport.h"
+
+/** The maximum number of concurrent batches possible.
+    Based upon the maximum number of individually queueable ops in the batch
+    api:
+      - initial metadata send
+      - message send
+      - status/close send (depending on client/server)
+      - initial metadata recv
+      - message recv
+      - status/close recv (depending on client/server) */
+#define MAX_CONCURRENT_BATCHES 6
+
+#define MAX_SEND_EXTRA_METADATA_COUNT 3
+
+// Used to create arena for the first call.
+#define ESTIMATED_MDELEM_COUNT 16
+
+struct batch_control {
+  batch_control() = default;
+
+  grpc_call* call = nullptr;
+  grpc_transport_stream_op_batch op;
+  /* Share memory for cq_completion and notify_tag as they are never needed
+     simultaneously. Each byte used in this data structure count as six bytes
+     per call, so any savings we can make are worthwhile,
+
+     We use notify_tag to determine whether or not to send notification to the
+     completion queue. Once we've made that determination, we can reuse the
+     memory for cq_completion. */
+  union {
+    grpc_cq_completion cq_completion;
+    struct {
+      /* Any given op indicates completion by either (a) calling a closure or
+         (b) sending a notification on the call's completion queue.  If
+         \a is_closure is true, \a tag indicates a closure to be invoked;
+         otherwise, \a tag indicates the tag to be used in the notification to
+         be sent to the completion queue. */
+      void* tag;
+      bool is_closure;
+    } notify_tag;
+  } completion_data;
+  grpc_closure start_batch;
+  grpc_closure finish_batch;
+  grpc_core::Atomic<intptr_t> steps_to_complete;
+  gpr_atm batch_error = reinterpret_cast<gpr_atm>(GRPC_ERROR_NONE);
+  void set_num_steps_to_complete(uintptr_t steps) {
+    steps_to_complete.Store(steps, grpc_core::MemoryOrder::RELEASE);
+  }
+  bool completed_batch_step() {
+    return steps_to_complete.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1;
+  }
+};
+
+struct parent_call {
+  parent_call() { gpr_mu_init(&child_list_mu); }
+  ~parent_call() { gpr_mu_destroy(&child_list_mu); }
+
+  gpr_mu child_list_mu;
+  grpc_call* first_child = nullptr;
+};
+
+struct child_call {
+  child_call(grpc_call* parent) : parent(parent) {}
+  grpc_call* parent;
+  /** siblings: children of the same parent form a list, and this list is
+     protected under
+      parent->mu */
+  grpc_call* sibling_next = nullptr;
+  grpc_call* sibling_prev = nullptr;
+};
+
+#define RECV_NONE ((gpr_atm)0)
+#define RECV_INITIAL_METADATA_FIRST ((gpr_atm)1)
+
+struct grpc_call {
+  grpc_call(grpc_core::Arena* arena, const grpc_call_create_args& args)
+      : arena(arena),
+        cq(args.cq),
+        channel(args.channel),
+        is_client(args.server_transport_data == nullptr),
+        stream_op_payload(context) {
+    for (int i = 0; i < 2; i++) {
+      for (int j = 0; j < 2; j++) {
+        metadata_batch[i][j].deadline = GRPC_MILLIS_INF_FUTURE;
+      }
+    }
+  }
+
+  ~grpc_call() {
+    gpr_free(static_cast<void*>(const_cast<char*>(final_info.error_string)));
+  }
+
+  grpc_core::RefCount ext_ref;
+  grpc_core::Arena* arena;
+  grpc_core::CallCombiner call_combiner;
+  grpc_completion_queue* cq;
+  grpc_polling_entity pollent;
+  grpc_channel* channel;
+  gpr_cycle_counter start_time = gpr_get_cycle_counter();
+  /* parent_call* */ gpr_atm parent_call_atm = 0;
+  child_call* child = nullptr;
+
+  /* client or server call */
+  bool is_client;
+  /** has grpc_call_unref been called */
+  bool destroy_called = false;
+  /** flag indicating that cancellation is inherited */
+  bool cancellation_is_inherited = false;
+  /** which ops are in-flight */
+  bool sent_initial_metadata = false;
+  bool sending_message = false;
+  bool sent_final_op = false;
+  bool received_initial_metadata = false;
+  bool receiving_message = false;
+  bool requested_final_op = false;
+  gpr_atm any_ops_sent_atm = 0;
+  gpr_atm received_final_op_atm = 0;
+
+  batch_control* active_batches[MAX_CONCURRENT_BATCHES] = {};
+  grpc_transport_stream_op_batch_payload stream_op_payload;
+
+  /* first idx: is_receiving, second idx: is_trailing */
+  grpc_metadata_batch metadata_batch[2][2] = {};
+
+  /* Buffered read metadata waiting to be returned to the application.
+     Element 0 is initial metadata, element 1 is trailing metadata. */
+  grpc_metadata_array* buffered_metadata[2] = {};
+
+  grpc_metadata compression_md;
+
+  // A char* indicating the peer name.
+  gpr_atm peer_string = 0;
+
+  /* Call data useful used for reporting. Only valid after the call has
+   * completed */
+  grpc_call_final_info final_info;
+
+  /* Compression algorithm for *incoming* data */
+  grpc_message_compression_algorithm incoming_message_compression_algorithm =
+      GRPC_MESSAGE_COMPRESS_NONE;
+  /* Stream compression algorithm for *incoming* data */
+  grpc_stream_compression_algorithm incoming_stream_compression_algorithm =
+      GRPC_STREAM_COMPRESS_NONE;
+  /* Supported encodings (compression algorithms), a bitset.
+   * Always support no compression. */
+  uint32_t encodings_accepted_by_peer = 1 << GRPC_MESSAGE_COMPRESS_NONE;
+  /* Supported stream encodings (stream compression algorithms), a bitset */
+  uint32_t stream_encodings_accepted_by_peer = 0;
+
+  /* Contexts for various subsystems (security, tracing, ...). */
+  grpc_call_context_element context[GRPC_CONTEXT_COUNT] = {};
+
+  /* for the client, extra metadata is initial metadata; for the
+     server, it's trailing metadata */
+  grpc_linked_mdelem send_extra_metadata[MAX_SEND_EXTRA_METADATA_COUNT];
+  int send_extra_metadata_count;
+  grpc_millis send_deadline;
+
+  grpc_core::ManualConstructor<grpc_core::SliceBufferByteStream> sending_stream;
+
+  grpc_core::OrphanablePtr<grpc_core::ByteStream> receiving_stream;
+  grpc_byte_buffer** receiving_buffer = nullptr;
+  grpc_slice receiving_slice = grpc_empty_slice();
+  grpc_closure receiving_slice_ready;
+  grpc_closure receiving_stream_ready;
+  grpc_closure receiving_initial_metadata_ready;
+  grpc_closure receiving_trailing_metadata_ready;
+  uint32_t test_only_last_message_flags = 0;
+  gpr_atm cancelled = 0;
+
+  grpc_closure release_call;
+
+  union {
+    struct {
+      grpc_status_code* status;
+      grpc_slice* status_details;
+      const char** error_string;
+    } client;
+    struct {
+      int* cancelled;
+      // backpointer to owning server if this is a server side call.
+      grpc_server* server;
+    } server;
+  } final_op;
+  gpr_atm status_error = 0;
+
+  /* recv_state can contain one of the following values:
+     RECV_NONE :                 :  no initial metadata and messages received
+     RECV_INITIAL_METADATA_FIRST :  received initial metadata first
+     a batch_control*            :  received messages first
+
+                 +------1------RECV_NONE------3-----+
+                 |                                  |
+                 |                                  |
+                 v                                  v
+     RECV_INITIAL_METADATA_FIRST        receiving_stream_ready_bctlp
+           |           ^                      |           ^
+           |           |                      |           |
+           +-----2-----+                      +-----4-----+
+
+    For 1, 4: See receiving_initial_metadata_ready() function
+    For 2, 3: See receiving_stream_ready() function */
+  gpr_atm recv_state = 0;
+};
+
+grpc_core::TraceFlag grpc_call_error_trace(false, "call_error");
+grpc_core::TraceFlag grpc_compression_trace(false, "compression");
+
+#define CALL_STACK_FROM_CALL(call)   \
+  (grpc_call_stack*)((char*)(call) + \
+                     GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call)))
+#define CALL_FROM_CALL_STACK(call_stack) \
+  (grpc_call*)(((char*)(call_stack)) -   \
+               GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call)))
+
+#define CALL_ELEM_FROM_CALL(call, idx) \
+  grpc_call_stack_element(CALL_STACK_FROM_CALL(call), idx)
+#define CALL_FROM_TOP_ELEM(top_elem) \
+  CALL_FROM_CALL_STACK(grpc_call_stack_from_top_element(top_elem))
+
+static void execute_batch(grpc_call* call, grpc_transport_stream_op_batch* op,
+                          grpc_closure* start_batch_closure);
+
+static void cancel_with_status(grpc_call* c, grpc_status_code status,
+                               const char* description);
+static void cancel_with_error(grpc_call* c, grpc_error* error);
+static void destroy_call(void* call_stack, grpc_error* error);
+static void receiving_slice_ready(void* bctlp, grpc_error* error);
+static void set_final_status(grpc_call* call, grpc_error* error);
+static void process_data_after_md(batch_control* bctl);
+static void post_batch_completion(batch_control* bctl);
+
+static void add_init_error(grpc_error** composite, grpc_error* new_err) {
+  if (new_err == GRPC_ERROR_NONE) return;
+  if (*composite == GRPC_ERROR_NONE)
+    *composite = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Call creation failed");
+  *composite = grpc_error_add_child(*composite, new_err);
+}
+
+void* grpc_call_arena_alloc(grpc_call* call, size_t size) {
+  return call->arena->Alloc(size);
+}
+
+static parent_call* get_or_create_parent_call(grpc_call* call) {
+  parent_call* p = (parent_call*)gpr_atm_acq_load(&call->parent_call_atm);
+  if (p == nullptr) {
+    p = call->arena->New<parent_call>();
+    if (!gpr_atm_rel_cas(&call->parent_call_atm, (gpr_atm) nullptr,
+                         (gpr_atm)p)) {
+      p->~parent_call();
+      p = (parent_call*)gpr_atm_acq_load(&call->parent_call_atm);
+    }
+  }
+  return p;
+}
+
+static parent_call* get_parent_call(grpc_call* call) {
+  return (parent_call*)gpr_atm_acq_load(&call->parent_call_atm);
+}
+
+size_t grpc_call_get_initial_size_estimate() {
+  return sizeof(grpc_call) + sizeof(batch_control) * MAX_CONCURRENT_BATCHES +
+         sizeof(grpc_linked_mdelem) * ESTIMATED_MDELEM_COUNT;
+}
+
+grpc_error* grpc_call_create(const grpc_call_create_args* args,
+                             grpc_call** out_call) {
+  GPR_TIMER_SCOPE("grpc_call_create", 0);
+
+  GRPC_CHANNEL_INTERNAL_REF(args->channel, "call");
+
+  grpc_core::Arena* arena;
+  grpc_call* call;
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_channel_stack* channel_stack =
+      grpc_channel_get_channel_stack(args->channel);
+  size_t initial_size = grpc_channel_get_call_size_estimate(args->channel);
+  GRPC_STATS_INC_CALL_INITIAL_SIZE(initial_size);
+  size_t call_and_stack_size =
+      GPR_ROUND_UP_TO_ALIGNMENT_SIZE(sizeof(grpc_call)) +
+      channel_stack->call_stack_size;
+  size_t call_alloc_size =
+      call_and_stack_size + (args->parent ? sizeof(child_call) : 0);
+
+  std::pair<grpc_core::Arena*, void*> arena_with_call =
+      grpc_core::Arena::CreateWithAlloc(initial_size, call_alloc_size);
+  arena = arena_with_call.first;
+  call = new (arena_with_call.second) grpc_call(arena, *args);
+  *out_call = call;
+  grpc_slice path = grpc_empty_slice();
+  if (call->is_client) {
+    call->final_op.client.status_details = nullptr;
+    call->final_op.client.status = nullptr;
+    call->final_op.client.error_string = nullptr;
+    GRPC_STATS_INC_CLIENT_CALLS_CREATED();
+    GPR_ASSERT(args->add_initial_metadata_count <
+               MAX_SEND_EXTRA_METADATA_COUNT);
+    for (size_t i = 0; i < args->add_initial_metadata_count; i++) {
+      call->send_extra_metadata[i].md = args->add_initial_metadata[i];
+      if (grpc_slice_eq_static_interned(
+              GRPC_MDKEY(args->add_initial_metadata[i]), GRPC_MDSTR_PATH)) {
+        path = grpc_slice_ref_internal(
+            GRPC_MDVALUE(args->add_initial_metadata[i]));
+      }
+    }
+    call->send_extra_metadata_count =
+        static_cast<int>(args->add_initial_metadata_count);
+  } else {
+    GRPC_STATS_INC_SERVER_CALLS_CREATED();
+    call->final_op.server.cancelled = nullptr;
+    call->final_op.server.server = args->server;
+    GPR_ASSERT(args->add_initial_metadata_count == 0);
+    call->send_extra_metadata_count = 0;
+  }
+
+  grpc_millis send_deadline = args->send_deadline;
+  bool immediately_cancel = false;
+
+  if (args->parent != nullptr) {
+    call->child = new (reinterpret_cast<char*>(arena_with_call.second) +
+                       call_and_stack_size) child_call(args->parent);
+
+    GRPC_CALL_INTERNAL_REF(args->parent, "child");
+    GPR_ASSERT(call->is_client);
+    GPR_ASSERT(!args->parent->is_client);
+
+    if (args->propagation_mask & GRPC_PROPAGATE_DEADLINE) {
+      send_deadline = GPR_MIN(send_deadline, args->parent->send_deadline);
+    }
+    /* for now GRPC_PROPAGATE_TRACING_CONTEXT *MUST* be passed with
+     * GRPC_PROPAGATE_STATS_CONTEXT */
+    /* TODO(ctiller): This should change to use the appropriate census start_op
+     * call. */
+    if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT) {
+      if (0 == (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT)) {
+        add_init_error(&error, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                   "Census tracing propagation requested "
+                                   "without Census context propagation"));
+      }
+      grpc_call_context_set(call, GRPC_CONTEXT_TRACING,
+                            args->parent->context[GRPC_CONTEXT_TRACING].value,
+                            nullptr);
+    } else if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT) {
+      add_init_error(&error, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                 "Census context propagation requested "
+                                 "without Census tracing propagation"));
+    }
+    if (args->propagation_mask & GRPC_PROPAGATE_CANCELLATION) {
+      call->cancellation_is_inherited = 1;
+      if (gpr_atm_acq_load(&args->parent->received_final_op_atm)) {
+        immediately_cancel = true;
+      }
+    }
+  }
+  call->send_deadline = send_deadline;
+  /* initial refcount dropped by grpc_call_unref */
+  grpc_call_element_args call_args = {CALL_STACK_FROM_CALL(call),
+                                      args->server_transport_data,
+                                      call->context,
+                                      path,
+                                      call->start_time,
+                                      send_deadline,
+                                      call->arena,
+                                      &call->call_combiner};
+  add_init_error(&error, grpc_call_stack_init(channel_stack, 1, destroy_call,
+                                              call, &call_args));
+  // Publish this call to parent only after the call stack has been initialized.
+  if (args->parent != nullptr) {
+    child_call* cc = call->child;
+    parent_call* pc = get_or_create_parent_call(args->parent);
+    gpr_mu_lock(&pc->child_list_mu);
+    if (pc->first_child == nullptr) {
+      pc->first_child = call;
+      cc->sibling_next = cc->sibling_prev = call;
+    } else {
+      cc->sibling_next = pc->first_child;
+      cc->sibling_prev = pc->first_child->child->sibling_prev;
+      cc->sibling_next->child->sibling_prev =
+          cc->sibling_prev->child->sibling_next = call;
+    }
+    gpr_mu_unlock(&pc->child_list_mu);
+  }
+
+  if (error != GRPC_ERROR_NONE) {
+    cancel_with_error(call, GRPC_ERROR_REF(error));
+  }
+  if (immediately_cancel) {
+    cancel_with_error(call, GRPC_ERROR_CANCELLED);
+  }
+  if (args->cq != nullptr) {
+    GPR_ASSERT(args->pollset_set_alternative == nullptr &&
+               "Only one of 'cq' and 'pollset_set_alternative' should be "
+               "non-nullptr.");
+    GRPC_CQ_INTERNAL_REF(args->cq, "bind");
+    call->pollent =
+        grpc_polling_entity_create_from_pollset(grpc_cq_pollset(args->cq));
+  }
+  if (args->pollset_set_alternative != nullptr) {
+    call->pollent = grpc_polling_entity_create_from_pollset_set(
+        args->pollset_set_alternative);
+  }
+  if (!grpc_polling_entity_is_empty(&call->pollent)) {
+    grpc_call_stack_set_pollset_or_pollset_set(CALL_STACK_FROM_CALL(call),
+                                               &call->pollent);
+  }
+
+  if (call->is_client) {
+    grpc_core::channelz::ChannelNode* channelz_channel =
+        grpc_channel_get_channelz_node(call->channel);
+    if (channelz_channel != nullptr) {
+      channelz_channel->RecordCallStarted();
+    }
+  } else {
+    grpc_core::channelz::ServerNode* channelz_server =
+        grpc_server_get_channelz_node(call->final_op.server.server);
+    if (channelz_server != nullptr) {
+      channelz_server->RecordCallStarted();
+    }
+  }
+
+  grpc_slice_unref_internal(path);
+
+  return error;
+}
+
+void grpc_call_set_completion_queue(grpc_call* call,
+                                    grpc_completion_queue* cq) {
+  GPR_ASSERT(cq);
+
+  if (grpc_polling_entity_pollset_set(&call->pollent) != nullptr) {
+    gpr_log(GPR_ERROR, "A pollset_set is already registered for this call.");
+    abort();
+  }
+  call->cq = cq;
+  GRPC_CQ_INTERNAL_REF(cq, "bind");
+  call->pollent = grpc_polling_entity_create_from_pollset(grpc_cq_pollset(cq));
+  grpc_call_stack_set_pollset_or_pollset_set(CALL_STACK_FROM_CALL(call),
+                                             &call->pollent);
+}
+
+#ifndef NDEBUG
+#define REF_REASON reason
+#define REF_ARG , const char* reason
+#else
+#define REF_REASON ""
+#define REF_ARG
+#endif
+void grpc_call_internal_ref(grpc_call* c REF_ARG) {
+  GRPC_CALL_STACK_REF(CALL_STACK_FROM_CALL(c), REF_REASON);
+}
+void grpc_call_internal_unref(grpc_call* c REF_ARG) {
+  GRPC_CALL_STACK_UNREF(CALL_STACK_FROM_CALL(c), REF_REASON);
+}
+
+static void release_call(void* call, grpc_error* /*error*/) {
+  grpc_call* c = static_cast<grpc_call*>(call);
+  grpc_channel* channel = c->channel;
+  grpc_core::Arena* arena = c->arena;
+  c->~grpc_call();
+  grpc_channel_update_call_size_estimate(channel, arena->Destroy());
+  GRPC_CHANNEL_INTERNAL_UNREF(channel, "call");
+}
+
+static void destroy_call(void* call, grpc_error* /*error*/) {
+  GPR_TIMER_SCOPE("destroy_call", 0);
+  size_t i;
+  int ii;
+  grpc_call* c = static_cast<grpc_call*>(call);
+  for (i = 0; i < 2; i++) {
+    grpc_metadata_batch_destroy(
+        &c->metadata_batch[1 /* is_receiving */][i /* is_initial */]);
+  }
+  c->receiving_stream.reset();
+  parent_call* pc = get_parent_call(c);
+  if (pc != nullptr) {
+    pc->~parent_call();
+  }
+  for (ii = 0; ii < c->send_extra_metadata_count; ii++) {
+    GRPC_MDELEM_UNREF(c->send_extra_metadata[ii].md);
+  }
+  for (i = 0; i < GRPC_CONTEXT_COUNT; i++) {
+    if (c->context[i].destroy) {
+      c->context[i].destroy(c->context[i].value);
+    }
+  }
+  if (c->cq) {
+    GRPC_CQ_INTERNAL_UNREF(c->cq, "bind");
+  }
+
+  grpc_error* status_error =
+      reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&c->status_error));
+  grpc_error_get_status(status_error, c->send_deadline,
+                        &c->final_info.final_status, nullptr, nullptr,
+                        &(c->final_info.error_string));
+  GRPC_ERROR_UNREF(status_error);
+  c->final_info.stats.latency =
+      gpr_cycle_counter_sub(gpr_get_cycle_counter(), c->start_time);
+  grpc_call_stack_destroy(CALL_STACK_FROM_CALL(c), &c->final_info,
+                          GRPC_CLOSURE_INIT(&c->release_call, release_call, c,
+                                            grpc_schedule_on_exec_ctx));
+}
+
+void grpc_call_ref(grpc_call* c) { c->ext_ref.Ref(); }
+
+void grpc_call_unref(grpc_call* c) {
+  if (GPR_LIKELY(!c->ext_ref.Unref())) return;
+
+  GPR_TIMER_SCOPE("grpc_call_unref", 0);
+
+  child_call* cc = c->child;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_call_unref(c=%p)", 1, (c));
+
+  if (cc) {
+    parent_call* pc = get_parent_call(cc->parent);
+    gpr_mu_lock(&pc->child_list_mu);
+    if (c == pc->first_child) {
+      pc->first_child = cc->sibling_next;
+      if (c == pc->first_child) {
+        pc->first_child = nullptr;
+      }
+    }
+    cc->sibling_prev->child->sibling_next = cc->sibling_next;
+    cc->sibling_next->child->sibling_prev = cc->sibling_prev;
+    gpr_mu_unlock(&pc->child_list_mu);
+    GRPC_CALL_INTERNAL_UNREF(cc->parent, "child");
+  }
+
+  GPR_ASSERT(!c->destroy_called);
+  c->destroy_called = 1;
+  bool cancel = gpr_atm_acq_load(&c->any_ops_sent_atm) != 0 &&
+                gpr_atm_acq_load(&c->received_final_op_atm) == 0;
+  if (cancel) {
+    cancel_with_error(c, GRPC_ERROR_CANCELLED);
+  } else {
+    // Unset the call combiner cancellation closure.  This has the
+    // effect of scheduling the previously set cancellation closure, if
+    // any, so that it can release any internal references it may be
+    // holding to the call stack. Also flush the closures on exec_ctx so that
+    // filters that schedule cancel notification closures on exec_ctx do not
+    // need to take a ref of the call stack to guarantee closure liveness.
+    c->call_combiner.SetNotifyOnCancel(nullptr);
+    grpc_core::ExecCtx::Get()->Flush();
+  }
+  GRPC_CALL_INTERNAL_UNREF(c, "destroy");
+}
+
+grpc_call_error grpc_call_cancel(grpc_call* call, void* reserved) {
+  GRPC_API_TRACE("grpc_call_cancel(call=%p, reserved=%p)", 2, (call, reserved));
+  GPR_ASSERT(!reserved);
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  cancel_with_error(call, GRPC_ERROR_CANCELLED);
+  return GRPC_CALL_OK;
+}
+
+// This is called via the call combiner to start sending a batch down
+// the filter stack.
+static void execute_batch_in_call_combiner(void* arg, grpc_error* /*ignored*/) {
+  GPR_TIMER_SCOPE("execute_batch_in_call_combiner", 0);
+  grpc_transport_stream_op_batch* batch =
+      static_cast<grpc_transport_stream_op_batch*>(arg);
+  grpc_call* call = static_cast<grpc_call*>(batch->handler_private.extra_arg);
+  grpc_call_element* elem = CALL_ELEM_FROM_CALL(call, 0);
+  GRPC_CALL_LOG_OP(GPR_INFO, elem, batch);
+  elem->filter->start_transport_stream_op_batch(elem, batch);
+}
+
+// start_batch_closure points to a caller-allocated closure to be used
+// for entering the call combiner.
+static void execute_batch(grpc_call* call,
+                          grpc_transport_stream_op_batch* batch,
+                          grpc_closure* start_batch_closure) {
+  batch->handler_private.extra_arg = call;
+  GRPC_CLOSURE_INIT(start_batch_closure, execute_batch_in_call_combiner, batch,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CALL_COMBINER_START(&call->call_combiner, start_batch_closure,
+                           GRPC_ERROR_NONE, "executing batch");
+}
+
+char* grpc_call_get_peer(grpc_call* call) {
+  char* peer_string = (char*)gpr_atm_acq_load(&call->peer_string);
+  if (peer_string != nullptr) return gpr_strdup(peer_string);
+  peer_string = grpc_channel_get_target(call->channel);
+  if (peer_string != nullptr) return peer_string;
+  return gpr_strdup("unknown");
+}
+
+grpc_call* grpc_call_from_top_element(grpc_call_element* elem) {
+  return CALL_FROM_TOP_ELEM(elem);
+}
+
+/*******************************************************************************
+ * CANCELLATION
+ */
+
+grpc_call_error grpc_call_cancel_with_status(grpc_call* c,
+                                             grpc_status_code status,
+                                             const char* description,
+                                             void* reserved) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE(
+      "grpc_call_cancel_with_status("
+      "c=%p, status=%d, description=%s, reserved=%p)",
+      4, (c, (int)status, description, reserved));
+  GPR_ASSERT(reserved == nullptr);
+  cancel_with_status(c, status, description);
+  return GRPC_CALL_OK;
+}
+
+typedef struct {
+  grpc_call* call;
+  grpc_closure start_batch;
+  grpc_closure finish_batch;
+} cancel_state;
+
+// The on_complete callback used when sending a cancel_stream batch down
+// the filter stack.  Yields the call combiner when the batch is done.
+static void done_termination(void* arg, grpc_error* /*error*/) {
+  cancel_state* state = static_cast<cancel_state*>(arg);
+  GRPC_CALL_COMBINER_STOP(&state->call->call_combiner,
+                          "on_complete for cancel_stream op");
+  GRPC_CALL_INTERNAL_UNREF(state->call, "termination");
+  gpr_free(state);
+}
+
+static void cancel_with_error(grpc_call* c, grpc_error* error) {
+  if (!gpr_atm_rel_cas(&c->cancelled, 0, 1)) {
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  GRPC_CALL_INTERNAL_REF(c, "termination");
+  // Inform the call combiner of the cancellation, so that it can cancel
+  // any in-flight asynchronous actions that may be holding the call
+  // combiner.  This ensures that the cancel_stream batch can be sent
+  // down the filter stack in a timely manner.
+  c->call_combiner.Cancel(GRPC_ERROR_REF(error));
+  cancel_state* state = static_cast<cancel_state*>(gpr_malloc(sizeof(*state)));
+  state->call = c;
+  GRPC_CLOSURE_INIT(&state->finish_batch, done_termination, state,
+                    grpc_schedule_on_exec_ctx);
+  grpc_transport_stream_op_batch* op =
+      grpc_make_transport_stream_op(&state->finish_batch);
+  op->cancel_stream = true;
+  op->payload->cancel_stream.cancel_error = error;
+  execute_batch(c, op, &state->start_batch);
+}
+
+void grpc_call_cancel_internal(grpc_call* call) {
+  cancel_with_error(call, GRPC_ERROR_CANCELLED);
+}
+
+static grpc_error* error_from_status(grpc_status_code status,
+                                     const char* description) {
+  // copying 'description' is needed to ensure the grpc_call_cancel_with_status
+  // guarantee that can be short-lived.
+  return grpc_error_set_int(
+      grpc_error_set_str(GRPC_ERROR_CREATE_FROM_COPIED_STRING(description),
+                         GRPC_ERROR_STR_GRPC_MESSAGE,
+                         grpc_slice_from_copied_string(description)),
+      GRPC_ERROR_INT_GRPC_STATUS, status);
+}
+
+static void cancel_with_status(grpc_call* c, grpc_status_code status,
+                               const char* description) {
+  cancel_with_error(c, error_from_status(status, description));
+}
+
+static void set_final_status(grpc_call* call, grpc_error* error) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_call_error_trace)) {
+    gpr_log(GPR_DEBUG, "set_final_status %s", call->is_client ? "CLI" : "SVR");
+    gpr_log(GPR_DEBUG, "%s", grpc_error_string(error));
+  }
+  if (call->is_client) {
+    grpc_error_get_status(error, call->send_deadline,
+                          call->final_op.client.status,
+                          call->final_op.client.status_details, nullptr,
+                          call->final_op.client.error_string);
+    // explicitly take a ref
+    grpc_slice_ref_internal(*call->final_op.client.status_details);
+    gpr_atm_rel_store(&call->status_error, reinterpret_cast<gpr_atm>(error));
+    grpc_core::channelz::ChannelNode* channelz_channel =
+        grpc_channel_get_channelz_node(call->channel);
+    if (channelz_channel != nullptr) {
+      if (*call->final_op.client.status != GRPC_STATUS_OK) {
+        channelz_channel->RecordCallFailed();
+      } else {
+        channelz_channel->RecordCallSucceeded();
+      }
+    }
+  } else {
+    *call->final_op.server.cancelled =
+        error != GRPC_ERROR_NONE ||
+        reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&call->status_error)) !=
+            GRPC_ERROR_NONE;
+    grpc_core::channelz::ServerNode* channelz_server =
+        grpc_server_get_channelz_node(call->final_op.server.server);
+    if (channelz_server != nullptr) {
+      if (*call->final_op.server.cancelled) {
+        channelz_server->RecordCallFailed();
+      } else {
+        channelz_server->RecordCallSucceeded();
+      }
+    }
+    GRPC_ERROR_UNREF(error);
+  }
+}
+
+/*******************************************************************************
+ * COMPRESSION
+ */
+
+static void set_incoming_message_compression_algorithm(
+    grpc_call* call, grpc_message_compression_algorithm algo) {
+  GPR_ASSERT(algo < GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT);
+  call->incoming_message_compression_algorithm = algo;
+}
+
+static void set_incoming_stream_compression_algorithm(
+    grpc_call* call, grpc_stream_compression_algorithm algo) {
+  GPR_ASSERT(algo < GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT);
+  call->incoming_stream_compression_algorithm = algo;
+}
+
+grpc_compression_algorithm grpc_call_test_only_get_compression_algorithm(
+    grpc_call* call) {
+  grpc_compression_algorithm algorithm = GRPC_COMPRESS_NONE;
+  grpc_compression_algorithm_from_message_stream_compression_algorithm(
+      &algorithm, call->incoming_message_compression_algorithm,
+      call->incoming_stream_compression_algorithm);
+  return algorithm;
+}
+
+static grpc_compression_algorithm compression_algorithm_for_level_locked(
+    grpc_call* call, grpc_compression_level level) {
+  return grpc_compression_algorithm_for_level(level,
+                                              call->encodings_accepted_by_peer);
+}
+
+uint32_t grpc_call_test_only_get_message_flags(grpc_call* call) {
+  uint32_t flags;
+  flags = call->test_only_last_message_flags;
+  return flags;
+}
+
+static void destroy_encodings_accepted_by_peer(void* /*p*/) { return; }
+
+static void set_encodings_accepted_by_peer(grpc_call* /*call*/,
+                                           grpc_mdelem mdel,
+                                           uint32_t* encodings_accepted_by_peer,
+                                           bool stream_encoding) {
+  size_t i;
+  uint32_t algorithm;
+  grpc_slice_buffer accept_encoding_parts;
+  grpc_slice accept_encoding_slice;
+  void* accepted_user_data;
+
+  accepted_user_data =
+      grpc_mdelem_get_user_data(mdel, destroy_encodings_accepted_by_peer);
+  if (accepted_user_data != nullptr) {
+    *encodings_accepted_by_peer =
+        static_cast<uint32_t>(((uintptr_t)accepted_user_data) - 1);
+    return;
+  }
+
+  *encodings_accepted_by_peer = 0;
+
+  accept_encoding_slice = GRPC_MDVALUE(mdel);
+  grpc_slice_buffer_init(&accept_encoding_parts);
+  grpc_slice_split_without_space(accept_encoding_slice, ",",
+                                 &accept_encoding_parts);
+
+  GPR_BITSET(encodings_accepted_by_peer, GRPC_COMPRESS_NONE);
+  for (i = 0; i < accept_encoding_parts.count; i++) {
+    int r;
+    grpc_slice accept_encoding_entry_slice = accept_encoding_parts.slices[i];
+    if (!stream_encoding) {
+      r = grpc_message_compression_algorithm_parse(
+          accept_encoding_entry_slice,
+          reinterpret_cast<grpc_message_compression_algorithm*>(&algorithm));
+    } else {
+      r = grpc_stream_compression_algorithm_parse(
+          accept_encoding_entry_slice,
+          reinterpret_cast<grpc_stream_compression_algorithm*>(&algorithm));
+    }
+    if (r) {
+      GPR_BITSET(encodings_accepted_by_peer, algorithm);
+    } else {
+      char* accept_encoding_entry_str =
+          grpc_slice_to_c_string(accept_encoding_entry_slice);
+      gpr_log(GPR_DEBUG,
+              "Unknown entry in accept encoding metadata: '%s'. Ignoring.",
+              accept_encoding_entry_str);
+      gpr_free(accept_encoding_entry_str);
+    }
+  }
+
+  grpc_slice_buffer_destroy_internal(&accept_encoding_parts);
+
+  grpc_mdelem_set_user_data(
+      mdel, destroy_encodings_accepted_by_peer,
+      (void*)((static_cast<uintptr_t>(*encodings_accepted_by_peer)) + 1));
+}
+
+uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call* call) {
+  uint32_t encodings_accepted_by_peer;
+  encodings_accepted_by_peer = call->encodings_accepted_by_peer;
+  return encodings_accepted_by_peer;
+}
+
+grpc_stream_compression_algorithm
+grpc_call_test_only_get_incoming_stream_encodings(grpc_call* call) {
+  return call->incoming_stream_compression_algorithm;
+}
+
+static grpc_linked_mdelem* linked_from_md(const grpc_metadata* md) {
+  return (grpc_linked_mdelem*)&md->internal_data;
+}
+
+static grpc_metadata* get_md_elem(grpc_metadata* metadata,
+                                  grpc_metadata* additional_metadata, int i,
+                                  int count) {
+  grpc_metadata* res =
+      i < count ? &metadata[i] : &additional_metadata[i - count];
+  GPR_ASSERT(res);
+  return res;
+}
+
+static int prepare_application_metadata(grpc_call* call, int count,
+                                        grpc_metadata* metadata,
+                                        int is_trailing,
+                                        int prepend_extra_metadata,
+                                        grpc_metadata* additional_metadata,
+                                        int additional_metadata_count) {
+  int total_count = count + additional_metadata_count;
+  int i;
+  grpc_metadata_batch* batch =
+      &call->metadata_batch[0 /* is_receiving */][is_trailing];
+  for (i = 0; i < total_count; i++) {
+    const grpc_metadata* md =
+        get_md_elem(metadata, additional_metadata, i, count);
+    grpc_linked_mdelem* l = linked_from_md(md);
+    GPR_ASSERT(sizeof(grpc_linked_mdelem) == sizeof(md->internal_data));
+    if (!GRPC_LOG_IF_ERROR("validate_metadata",
+                           grpc_validate_header_key_is_legal(md->key))) {
+      break;
+    } else if (!grpc_is_binary_header_internal(md->key) &&
+               !GRPC_LOG_IF_ERROR(
+                   "validate_metadata",
+                   grpc_validate_header_nonbin_value_is_legal(md->value))) {
+      break;
+    } else if (GRPC_SLICE_LENGTH(md->value) >= UINT32_MAX) {
+      // HTTP2 hpack encoding has a maximum limit.
+      break;
+    }
+    l->md = grpc_mdelem_from_grpc_metadata(const_cast<grpc_metadata*>(md));
+  }
+  if (i != total_count) {
+    for (int j = 0; j < i; j++) {
+      const grpc_metadata* md =
+          get_md_elem(metadata, additional_metadata, j, count);
+      grpc_linked_mdelem* l = linked_from_md(md);
+      GRPC_MDELEM_UNREF(l->md);
+    }
+    return 0;
+  }
+  if (prepend_extra_metadata) {
+    if (call->send_extra_metadata_count == 0) {
+      prepend_extra_metadata = 0;
+    } else {
+      for (i = 0; i < call->send_extra_metadata_count; i++) {
+        GRPC_LOG_IF_ERROR("prepare_application_metadata",
+                          grpc_metadata_batch_link_tail(
+                              batch, &call->send_extra_metadata[i]));
+      }
+    }
+  }
+  for (i = 0; i < total_count; i++) {
+    grpc_metadata* md = get_md_elem(metadata, additional_metadata, i, count);
+    grpc_linked_mdelem* l = linked_from_md(md);
+    grpc_error* error = grpc_metadata_batch_link_tail(batch, l);
+    if (error != GRPC_ERROR_NONE) {
+      GRPC_MDELEM_UNREF(l->md);
+    }
+    GRPC_LOG_IF_ERROR("prepare_application_metadata", error);
+  }
+  call->send_extra_metadata_count = 0;
+
+  return 1;
+}
+
+static grpc_message_compression_algorithm decode_message_compression(
+    grpc_mdelem md) {
+  grpc_message_compression_algorithm algorithm =
+      grpc_message_compression_algorithm_from_slice(GRPC_MDVALUE(md));
+  if (algorithm == GRPC_MESSAGE_COMPRESS_ALGORITHMS_COUNT) {
+    char* md_c_str = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+    gpr_log(GPR_ERROR,
+            "Invalid incoming message compression algorithm: '%s'. "
+            "Interpreting incoming data as uncompressed.",
+            md_c_str);
+    gpr_free(md_c_str);
+    return GRPC_MESSAGE_COMPRESS_NONE;
+  }
+  return algorithm;
+}
+
+static grpc_stream_compression_algorithm decode_stream_compression(
+    grpc_mdelem md) {
+  grpc_stream_compression_algorithm algorithm =
+      grpc_stream_compression_algorithm_from_slice(GRPC_MDVALUE(md));
+  if (algorithm == GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) {
+    char* md_c_str = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+    gpr_log(GPR_ERROR,
+            "Invalid incoming stream compression algorithm: '%s'. Interpreting "
+            "incoming data as uncompressed.",
+            md_c_str);
+    gpr_free(md_c_str);
+    return GRPC_STREAM_COMPRESS_NONE;
+  }
+  return algorithm;
+}
+
+static void publish_app_metadata(grpc_call* call, grpc_metadata_batch* b,
+                                 int is_trailing) {
+  if (b->list.count == 0) return;
+  if (!call->is_client && is_trailing) return;
+  if (is_trailing && call->buffered_metadata[1] == nullptr) return;
+  GPR_TIMER_SCOPE("publish_app_metadata", 0);
+  grpc_metadata_array* dest;
+  grpc_metadata* mdusr;
+  dest = call->buffered_metadata[is_trailing];
+  if (dest->count + b->list.count > dest->capacity) {
+    dest->capacity =
+        GPR_MAX(dest->capacity + b->list.count, dest->capacity * 3 / 2);
+    dest->metadata = static_cast<grpc_metadata*>(
+        gpr_realloc(dest->metadata, sizeof(grpc_metadata) * dest->capacity));
+  }
+  for (grpc_linked_mdelem* l = b->list.head; l != nullptr; l = l->next) {
+    mdusr = &dest->metadata[dest->count++];
+    /* we pass back borrowed slices that are valid whilst the call is valid */
+    mdusr->key = GRPC_MDKEY(l->md);
+    mdusr->value = GRPC_MDVALUE(l->md);
+  }
+}
+
+static void recv_initial_filter(grpc_call* call, grpc_metadata_batch* b) {
+  if (b->idx.named.content_encoding != nullptr) {
+    GPR_TIMER_SCOPE("incoming_stream_compression_algorithm", 0);
+    set_incoming_stream_compression_algorithm(
+        call, decode_stream_compression(b->idx.named.content_encoding->md));
+    grpc_metadata_batch_remove(b, GRPC_BATCH_CONTENT_ENCODING);
+  }
+  if (b->idx.named.grpc_encoding != nullptr) {
+    GPR_TIMER_SCOPE("incoming_message_compression_algorithm", 0);
+    set_incoming_message_compression_algorithm(
+        call, decode_message_compression(b->idx.named.grpc_encoding->md));
+    grpc_metadata_batch_remove(b, GRPC_BATCH_GRPC_ENCODING);
+  }
+  uint32_t message_encodings_accepted_by_peer = 1u;
+  uint32_t stream_encodings_accepted_by_peer = 1u;
+  if (b->idx.named.grpc_accept_encoding != nullptr) {
+    GPR_TIMER_SCOPE("encodings_accepted_by_peer", 0);
+    set_encodings_accepted_by_peer(call, b->idx.named.grpc_accept_encoding->md,
+                                   &message_encodings_accepted_by_peer, false);
+    grpc_metadata_batch_remove(b, GRPC_BATCH_GRPC_ACCEPT_ENCODING);
+  }
+  if (b->idx.named.accept_encoding != nullptr) {
+    GPR_TIMER_SCOPE("stream_encodings_accepted_by_peer", 0);
+    set_encodings_accepted_by_peer(call, b->idx.named.accept_encoding->md,
+                                   &stream_encodings_accepted_by_peer, true);
+    grpc_metadata_batch_remove(b, GRPC_BATCH_ACCEPT_ENCODING);
+  }
+  call->encodings_accepted_by_peer =
+      grpc_compression_bitset_from_message_stream_compression_bitset(
+          message_encodings_accepted_by_peer,
+          stream_encodings_accepted_by_peer);
+  publish_app_metadata(call, b, false);
+}
+
+static void recv_trailing_filter(void* args, grpc_metadata_batch* b,
+                                 grpc_error* batch_error) {
+  grpc_call* call = static_cast<grpc_call*>(args);
+  if (batch_error != GRPC_ERROR_NONE) {
+    set_final_status(call, batch_error);
+  } else if (b->idx.named.grpc_status != nullptr) {
+    grpc_status_code status_code =
+        grpc_get_status_code_from_metadata(b->idx.named.grpc_status->md);
+    grpc_error* error = GRPC_ERROR_NONE;
+    if (status_code != GRPC_STATUS_OK) {
+      char* peer_msg = nullptr;
+      char* peer = grpc_call_get_peer(call);
+      gpr_asprintf(&peer_msg, "Error received from peer %s", peer);
+      error = grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(peer_msg),
+                                 GRPC_ERROR_INT_GRPC_STATUS,
+                                 static_cast<intptr_t>(status_code));
+      gpr_free(peer);
+      gpr_free(peer_msg);
+    }
+    if (b->idx.named.grpc_message != nullptr) {
+      error = grpc_error_set_str(
+          error, GRPC_ERROR_STR_GRPC_MESSAGE,
+          grpc_slice_ref_internal(GRPC_MDVALUE(b->idx.named.grpc_message->md)));
+      grpc_metadata_batch_remove(b, GRPC_BATCH_GRPC_MESSAGE);
+    } else if (error != GRPC_ERROR_NONE) {
+      error = grpc_error_set_str(error, GRPC_ERROR_STR_GRPC_MESSAGE,
+                                 grpc_empty_slice());
+    }
+    set_final_status(call, GRPC_ERROR_REF(error));
+    grpc_metadata_batch_remove(b, GRPC_BATCH_GRPC_STATUS);
+    GRPC_ERROR_UNREF(error);
+  } else if (!call->is_client) {
+    set_final_status(call, GRPC_ERROR_NONE);
+  } else {
+    gpr_log(GPR_DEBUG,
+            "Received trailing metadata with no error and no status");
+    set_final_status(
+        call, grpc_error_set_int(
+                  GRPC_ERROR_CREATE_FROM_STATIC_STRING("No status received"),
+                  GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNKNOWN));
+  }
+  publish_app_metadata(call, b, true);
+}
+
+grpc_core::Arena* grpc_call_get_arena(grpc_call* call) { return call->arena; }
+
+grpc_call_stack* grpc_call_get_call_stack(grpc_call* call) {
+  return CALL_STACK_FROM_CALL(call);
+}
+
+/*******************************************************************************
+ * BATCH API IMPLEMENTATION
+ */
+
+static bool are_write_flags_valid(uint32_t flags) {
+  /* check that only bits in GRPC_WRITE_(INTERNAL?)_USED_MASK are set */
+  const uint32_t allowed_write_positions =
+      (GRPC_WRITE_USED_MASK | GRPC_WRITE_INTERNAL_USED_MASK);
+  const uint32_t invalid_positions = ~allowed_write_positions;
+  return !(flags & invalid_positions);
+}
+
+static bool are_initial_metadata_flags_valid(uint32_t flags, bool is_client) {
+  /* check that only bits in GRPC_WRITE_(INTERNAL?)_USED_MASK are set */
+  uint32_t invalid_positions = ~GRPC_INITIAL_METADATA_USED_MASK;
+  if (!is_client) {
+    invalid_positions |= GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST;
+  }
+  return !(flags & invalid_positions);
+}
+
+static size_t batch_slot_for_op(grpc_op_type type) {
+  switch (type) {
+    case GRPC_OP_SEND_INITIAL_METADATA:
+      return 0;
+    case GRPC_OP_SEND_MESSAGE:
+      return 1;
+    case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
+    case GRPC_OP_SEND_STATUS_FROM_SERVER:
+      return 2;
+    case GRPC_OP_RECV_INITIAL_METADATA:
+      return 3;
+    case GRPC_OP_RECV_MESSAGE:
+      return 4;
+    case GRPC_OP_RECV_CLOSE_ON_SERVER:
+    case GRPC_OP_RECV_STATUS_ON_CLIENT:
+      return 5;
+  }
+  GPR_UNREACHABLE_CODE(return 123456789);
+}
+
+static batch_control* reuse_or_allocate_batch_control(grpc_call* call,
+                                                      const grpc_op* ops) {
+  size_t slot_idx = batch_slot_for_op(ops[0].op);
+  batch_control** pslot = &call->active_batches[slot_idx];
+  batch_control* bctl;
+  if (*pslot != nullptr) {
+    bctl = *pslot;
+    if (bctl->call != nullptr) {
+      return nullptr;
+    }
+    bctl->~batch_control();
+    bctl->op = {};
+  } else {
+    bctl = call->arena->New<batch_control>();
+    *pslot = bctl;
+  }
+  bctl->call = call;
+  bctl->op.payload = &call->stream_op_payload;
+  return bctl;
+}
+
+static void finish_batch_completion(void* user_data,
+                                    grpc_cq_completion* /*storage*/) {
+  batch_control* bctl = static_cast<batch_control*>(user_data);
+  grpc_call* call = bctl->call;
+  bctl->call = nullptr;
+  GRPC_CALL_INTERNAL_UNREF(call, "completion");
+}
+
+static void reset_batch_errors(batch_control* bctl) {
+  GRPC_ERROR_UNREF(
+      reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&bctl->batch_error)));
+  gpr_atm_rel_store(&bctl->batch_error,
+                    reinterpret_cast<gpr_atm>(GRPC_ERROR_NONE));
+}
+
+static void post_batch_completion(batch_control* bctl) {
+  grpc_call* next_child_call;
+  grpc_call* call = bctl->call;
+  grpc_error* error = GRPC_ERROR_REF(
+      reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&bctl->batch_error)));
+
+  if (bctl->op.send_initial_metadata) {
+    grpc_metadata_batch_destroy(
+        &call->metadata_batch[0 /* is_receiving */][0 /* is_trailing */]);
+  }
+  if (bctl->op.send_message) {
+    if (bctl->op.payload->send_message.stream_write_closed &&
+        error == GRPC_ERROR_NONE) {
+      error = grpc_error_add_child(
+          error, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                     "Attempt to send message after stream was closed."));
+    }
+    call->sending_message = false;
+  }
+  if (bctl->op.send_trailing_metadata) {
+    grpc_metadata_batch_destroy(
+        &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */]);
+  }
+  if (bctl->op.recv_trailing_metadata) {
+    /* propagate cancellation to any interested children */
+    gpr_atm_rel_store(&call->received_final_op_atm, 1);
+    parent_call* pc = get_parent_call(call);
+    if (pc != nullptr) {
+      grpc_call* child;
+      gpr_mu_lock(&pc->child_list_mu);
+      child = pc->first_child;
+      if (child != nullptr) {
+        do {
+          next_child_call = child->child->sibling_next;
+          if (child->cancellation_is_inherited) {
+            GRPC_CALL_INTERNAL_REF(child, "propagate_cancel");
+            cancel_with_error(child, GRPC_ERROR_CANCELLED);
+            GRPC_CALL_INTERNAL_UNREF(child, "propagate_cancel");
+          }
+          child = next_child_call;
+        } while (child != pc->first_child);
+      }
+      gpr_mu_unlock(&pc->child_list_mu);
+    }
+    GRPC_ERROR_UNREF(error);
+    error = GRPC_ERROR_NONE;
+  }
+  if (error != GRPC_ERROR_NONE && bctl->op.recv_message &&
+      *call->receiving_buffer != nullptr) {
+    grpc_byte_buffer_destroy(*call->receiving_buffer);
+    *call->receiving_buffer = nullptr;
+  }
+  reset_batch_errors(bctl);
+
+  if (bctl->completion_data.notify_tag.is_closure) {
+    /* unrefs error */
+    bctl->call = nullptr;
+    grpc_core::Closure::Run(DEBUG_LOCATION,
+                            (grpc_closure*)bctl->completion_data.notify_tag.tag,
+                            error);
+    GRPC_CALL_INTERNAL_UNREF(call, "completion");
+  } else {
+    /* unrefs error */
+    grpc_cq_end_op(bctl->call->cq, bctl->completion_data.notify_tag.tag, error,
+                   finish_batch_completion, bctl,
+                   &bctl->completion_data.cq_completion);
+  }
+}
+
+static void finish_batch_step(batch_control* bctl) {
+  if (GPR_UNLIKELY(bctl->completed_batch_step())) {
+    post_batch_completion(bctl);
+  }
+}
+
+static void continue_receiving_slices(batch_control* bctl) {
+  grpc_error* error;
+  grpc_call* call = bctl->call;
+  for (;;) {
+    size_t remaining = call->receiving_stream->length() -
+                       (*call->receiving_buffer)->data.raw.slice_buffer.length;
+    if (remaining == 0) {
+      call->receiving_message = 0;
+      call->receiving_stream.reset();
+      finish_batch_step(bctl);
+      return;
+    }
+    if (call->receiving_stream->Next(remaining, &call->receiving_slice_ready)) {
+      error = call->receiving_stream->Pull(&call->receiving_slice);
+      if (error == GRPC_ERROR_NONE) {
+        grpc_slice_buffer_add(&(*call->receiving_buffer)->data.raw.slice_buffer,
+                              call->receiving_slice);
+      } else {
+        call->receiving_stream.reset();
+        grpc_byte_buffer_destroy(*call->receiving_buffer);
+        *call->receiving_buffer = nullptr;
+        call->receiving_message = 0;
+        finish_batch_step(bctl);
+        GRPC_ERROR_UNREF(error);
+        return;
+      }
+    } else {
+      return;
+    }
+  }
+}
+
+static void receiving_slice_ready(void* bctlp, grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+  bool release_error = false;
+
+  if (error == GRPC_ERROR_NONE) {
+    grpc_slice slice;
+    error = call->receiving_stream->Pull(&slice);
+    if (error == GRPC_ERROR_NONE) {
+      grpc_slice_buffer_add(&(*call->receiving_buffer)->data.raw.slice_buffer,
+                            slice);
+      continue_receiving_slices(bctl);
+    } else {
+      /* Error returned by ByteStream::Pull() needs to be released manually */
+      release_error = true;
+    }
+  }
+
+  if (error != GRPC_ERROR_NONE) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures)) {
+      GRPC_LOG_IF_ERROR("receiving_slice_ready", GRPC_ERROR_REF(error));
+    }
+    call->receiving_stream.reset();
+    grpc_byte_buffer_destroy(*call->receiving_buffer);
+    *call->receiving_buffer = nullptr;
+    call->receiving_message = 0;
+    finish_batch_step(bctl);
+    if (release_error) {
+      GRPC_ERROR_UNREF(error);
+    }
+  }
+}
+
+static void process_data_after_md(batch_control* bctl) {
+  grpc_call* call = bctl->call;
+  if (call->receiving_stream == nullptr) {
+    *call->receiving_buffer = nullptr;
+    call->receiving_message = 0;
+    finish_batch_step(bctl);
+  } else {
+    call->test_only_last_message_flags = call->receiving_stream->flags();
+    if ((call->receiving_stream->flags() & GRPC_WRITE_INTERNAL_COMPRESS) &&
+        (call->incoming_message_compression_algorithm >
+         GRPC_MESSAGE_COMPRESS_NONE)) {
+      grpc_compression_algorithm algo;
+      GPR_ASSERT(
+          grpc_compression_algorithm_from_message_stream_compression_algorithm(
+              &algo, call->incoming_message_compression_algorithm,
+              (grpc_stream_compression_algorithm)0));
+      *call->receiving_buffer =
+          grpc_raw_compressed_byte_buffer_create(nullptr, 0, algo);
+    } else {
+      *call->receiving_buffer = grpc_raw_byte_buffer_create(nullptr, 0);
+    }
+    GRPC_CLOSURE_INIT(&call->receiving_slice_ready, receiving_slice_ready, bctl,
+                      grpc_schedule_on_exec_ctx);
+    continue_receiving_slices(bctl);
+  }
+}
+
+static void receiving_stream_ready(void* bctlp, grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+  if (error != GRPC_ERROR_NONE) {
+    call->receiving_stream.reset();
+    if (reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&bctl->batch_error)) ==
+        GRPC_ERROR_NONE) {
+      gpr_atm_rel_store(&bctl->batch_error,
+                        reinterpret_cast<gpr_atm>(GRPC_ERROR_REF(error)));
+    }
+    cancel_with_error(call, GRPC_ERROR_REF(error));
+  }
+  /* If recv_state is RECV_NONE, we will save the batch_control
+   * object with rel_cas, and will not use it after the cas. Its corresponding
+   * acq_load is in receiving_initial_metadata_ready() */
+  if (error != GRPC_ERROR_NONE || call->receiving_stream == nullptr ||
+      !gpr_atm_rel_cas(&call->recv_state, RECV_NONE, (gpr_atm)bctlp)) {
+    process_data_after_md(bctl);
+  }
+}
+
+// The recv_message_ready callback used when sending a batch containing
+// a recv_message op down the filter stack.  Yields the call combiner
+// before processing the received message.
+static void receiving_stream_ready_in_call_combiner(void* bctlp,
+                                                    grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+  GRPC_CALL_COMBINER_STOP(&call->call_combiner, "recv_message_ready");
+  receiving_stream_ready(bctlp, error);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE
+handle_both_stream_and_msg_compression_set(grpc_call* call) {
+  char* error_msg = nullptr;
+  gpr_asprintf(&error_msg,
+               "Incoming stream has both stream compression (%d) and message "
+               "compression (%d).",
+               call->incoming_stream_compression_algorithm,
+               call->incoming_message_compression_algorithm);
+  gpr_log(GPR_ERROR, "%s", error_msg);
+  cancel_with_status(call, GRPC_STATUS_INTERNAL, error_msg);
+  gpr_free(error_msg);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE
+handle_error_parsing_compression_algorithm(grpc_call* call) {
+  char* error_msg = nullptr;
+  gpr_asprintf(&error_msg,
+               "Error in incoming message compression (%d) or stream "
+               "compression (%d).",
+               call->incoming_stream_compression_algorithm,
+               call->incoming_message_compression_algorithm);
+  cancel_with_status(call, GRPC_STATUS_INTERNAL, error_msg);
+  gpr_free(error_msg);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE handle_invalid_compression(
+    grpc_call* call, grpc_compression_algorithm compression_algorithm) {
+  char* error_msg = nullptr;
+  gpr_asprintf(&error_msg, "Invalid compression algorithm value '%d'.",
+               compression_algorithm);
+  gpr_log(GPR_ERROR, "%s", error_msg);
+  cancel_with_status(call, GRPC_STATUS_UNIMPLEMENTED, error_msg);
+  gpr_free(error_msg);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE handle_compression_algorithm_disabled(
+    grpc_call* call, grpc_compression_algorithm compression_algorithm) {
+  char* error_msg = nullptr;
+  const char* algo_name = nullptr;
+  grpc_compression_algorithm_name(compression_algorithm, &algo_name);
+  gpr_asprintf(&error_msg, "Compression algorithm '%s' is disabled.",
+               algo_name);
+  gpr_log(GPR_ERROR, "%s", error_msg);
+  cancel_with_status(call, GRPC_STATUS_UNIMPLEMENTED, error_msg);
+  gpr_free(error_msg);
+}
+
+static void GPR_ATTRIBUTE_NOINLINE handle_compression_algorithm_not_accepted(
+    grpc_call* call, grpc_compression_algorithm compression_algorithm) {
+  const char* algo_name = nullptr;
+  grpc_compression_algorithm_name(compression_algorithm, &algo_name);
+  gpr_log(GPR_ERROR,
+          "Compression algorithm ('%s') not present in the bitset of "
+          "accepted encodings ('0x%x')",
+          algo_name, call->encodings_accepted_by_peer);
+}
+
+static void validate_filtered_metadata(batch_control* bctl) {
+  grpc_compression_algorithm compression_algorithm;
+  grpc_call* call = bctl->call;
+  if (GPR_UNLIKELY(call->incoming_stream_compression_algorithm !=
+                       GRPC_STREAM_COMPRESS_NONE &&
+                   call->incoming_message_compression_algorithm !=
+                       GRPC_MESSAGE_COMPRESS_NONE)) {
+    handle_both_stream_and_msg_compression_set(call);
+  } else if (
+      GPR_UNLIKELY(
+          grpc_compression_algorithm_from_message_stream_compression_algorithm(
+              &compression_algorithm,
+              call->incoming_message_compression_algorithm,
+              call->incoming_stream_compression_algorithm) == 0)) {
+    handle_error_parsing_compression_algorithm(call);
+  } else {
+    const grpc_compression_options compression_options =
+        grpc_channel_compression_options(call->channel);
+    if (GPR_UNLIKELY(compression_algorithm >= GRPC_COMPRESS_ALGORITHMS_COUNT)) {
+      handle_invalid_compression(call, compression_algorithm);
+    } else if (GPR_UNLIKELY(
+                   grpc_compression_options_is_algorithm_enabled_internal(
+                       &compression_options, compression_algorithm) == 0)) {
+      /* check if algorithm is supported by current channel config */
+      handle_compression_algorithm_disabled(call, compression_algorithm);
+    }
+    /* GRPC_COMPRESS_NONE is always set. */
+    GPR_DEBUG_ASSERT(call->encodings_accepted_by_peer != 0);
+    if (GPR_UNLIKELY(!GPR_BITGET(call->encodings_accepted_by_peer,
+                                 compression_algorithm))) {
+      if (GRPC_TRACE_FLAG_ENABLED(grpc_compression_trace)) {
+        handle_compression_algorithm_not_accepted(call, compression_algorithm);
+      }
+    }
+  }
+}
+
+static void receiving_initial_metadata_ready(void* bctlp, grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+
+  GRPC_CALL_COMBINER_STOP(&call->call_combiner, "recv_initial_metadata_ready");
+
+  if (error == GRPC_ERROR_NONE) {
+    grpc_metadata_batch* md =
+        &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */];
+    recv_initial_filter(call, md);
+
+    /* TODO(ctiller): this could be moved into recv_initial_filter now */
+    GPR_TIMER_SCOPE("validate_filtered_metadata", 0);
+    validate_filtered_metadata(bctl);
+
+    if (md->deadline != GRPC_MILLIS_INF_FUTURE && !call->is_client) {
+      call->send_deadline = md->deadline;
+    }
+  } else {
+    if (reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&bctl->batch_error)) ==
+        GRPC_ERROR_NONE) {
+      gpr_atm_rel_store(&bctl->batch_error,
+                        reinterpret_cast<gpr_atm>(GRPC_ERROR_REF(error)));
+    }
+    cancel_with_error(call, GRPC_ERROR_REF(error));
+  }
+
+  grpc_closure* saved_rsr_closure = nullptr;
+  while (true) {
+    gpr_atm rsr_bctlp = gpr_atm_acq_load(&call->recv_state);
+    /* Should only receive initial metadata once */
+    GPR_ASSERT(rsr_bctlp != 1);
+    if (rsr_bctlp == 0) {
+      /* We haven't seen initial metadata and messages before, thus initial
+       * metadata is received first.
+       * no_barrier_cas is used, as this function won't access the batch_control
+       * object saved by receiving_stream_ready() if the initial metadata is
+       * received first. */
+      if (gpr_atm_no_barrier_cas(&call->recv_state, RECV_NONE,
+                                 RECV_INITIAL_METADATA_FIRST)) {
+        break;
+      }
+    } else {
+      /* Already received messages */
+      saved_rsr_closure =
+          GRPC_CLOSURE_CREATE(receiving_stream_ready, (batch_control*)rsr_bctlp,
+                              grpc_schedule_on_exec_ctx);
+      /* No need to modify recv_state */
+      break;
+    }
+  }
+  if (saved_rsr_closure != nullptr) {
+    grpc_core::Closure::Run(DEBUG_LOCATION, saved_rsr_closure,
+                            GRPC_ERROR_REF(error));
+  }
+
+  finish_batch_step(bctl);
+}
+
+static void receiving_trailing_metadata_ready(void* bctlp, grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+  GRPC_CALL_COMBINER_STOP(&call->call_combiner, "recv_trailing_metadata_ready");
+  grpc_metadata_batch* md =
+      &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
+  recv_trailing_filter(call, md, GRPC_ERROR_REF(error));
+  finish_batch_step(bctl);
+}
+
+static void finish_batch(void* bctlp, grpc_error* error) {
+  batch_control* bctl = static_cast<batch_control*>(bctlp);
+  grpc_call* call = bctl->call;
+  GRPC_CALL_COMBINER_STOP(&call->call_combiner, "on_complete");
+  if (reinterpret_cast<grpc_error*>(gpr_atm_acq_load(&bctl->batch_error)) ==
+      GRPC_ERROR_NONE) {
+    gpr_atm_rel_store(&bctl->batch_error,
+                      reinterpret_cast<gpr_atm>(GRPC_ERROR_REF(error)));
+  }
+  if (error != GRPC_ERROR_NONE) {
+    cancel_with_error(call, GRPC_ERROR_REF(error));
+  }
+  finish_batch_step(bctl);
+}
+
+static void free_no_op_completion(void* /*p*/, grpc_cq_completion* completion) {
+  gpr_free(completion);
+}
+
+static grpc_call_error call_start_batch(grpc_call* call, const grpc_op* ops,
+                                        size_t nops, void* notify_tag,
+                                        int is_notify_tag_closure) {
+  GPR_TIMER_SCOPE("call_start_batch", 0);
+
+  size_t i;
+  const grpc_op* op;
+  batch_control* bctl;
+  bool has_send_ops = false;
+  int num_recv_ops = 0;
+  grpc_call_error error = GRPC_CALL_OK;
+  grpc_transport_stream_op_batch* stream_op;
+  grpc_transport_stream_op_batch_payload* stream_op_payload;
+
+  GRPC_CALL_LOG_BATCH(GPR_INFO, ops, nops);
+
+  if (nops == 0) {
+    if (!is_notify_tag_closure) {
+      GPR_ASSERT(grpc_cq_begin_op(call->cq, notify_tag));
+      grpc_cq_end_op(call->cq, notify_tag, GRPC_ERROR_NONE,
+                     free_no_op_completion, nullptr,
+                     static_cast<grpc_cq_completion*>(
+                         gpr_malloc(sizeof(grpc_cq_completion))));
+    } else {
+      grpc_core::Closure::Run(DEBUG_LOCATION, (grpc_closure*)notify_tag,
+                              GRPC_ERROR_NONE);
+    }
+    error = GRPC_CALL_OK;
+    goto done;
+  }
+
+  bctl = reuse_or_allocate_batch_control(call, ops);
+  if (bctl == nullptr) {
+    return GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+  }
+  bctl->completion_data.notify_tag.tag = notify_tag;
+  bctl->completion_data.notify_tag.is_closure =
+      static_cast<uint8_t>(is_notify_tag_closure != 0);
+
+  stream_op = &bctl->op;
+  stream_op_payload = &call->stream_op_payload;
+
+  /* rewrite batch ops into a transport op */
+  for (i = 0; i < nops; i++) {
+    op = &ops[i];
+    if (op->reserved != nullptr) {
+      error = GRPC_CALL_ERROR;
+      goto done_with_error;
+    }
+    switch (op->op) {
+      case GRPC_OP_SEND_INITIAL_METADATA: {
+        /* Flag validation: currently allow no flags */
+        if (!are_initial_metadata_flags_valid(op->flags, call->is_client)) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (call->sent_initial_metadata) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        // TODO(juanlishen): If the user has already specified a compression
+        // algorithm by setting the initial metadata with key of
+        // GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY, we shouldn't override that
+        // with the compression algorithm mapped from compression level.
+        /* process compression level */
+        grpc_metadata& compression_md = call->compression_md;
+        compression_md.key = grpc_empty_slice();
+        compression_md.value = grpc_empty_slice();
+        compression_md.flags = 0;
+        size_t additional_metadata_count = 0;
+        grpc_compression_level effective_compression_level =
+            GRPC_COMPRESS_LEVEL_NONE;
+        bool level_set = false;
+        if (op->data.send_initial_metadata.maybe_compression_level.is_set) {
+          effective_compression_level =
+              op->data.send_initial_metadata.maybe_compression_level.level;
+          level_set = true;
+        } else {
+          const grpc_compression_options copts =
+              grpc_channel_compression_options(call->channel);
+          if (copts.default_level.is_set) {
+            level_set = true;
+            effective_compression_level = copts.default_level.level;
+          }
+        }
+        // Currently, only server side supports compression level setting.
+        if (level_set && !call->is_client) {
+          const grpc_compression_algorithm calgo =
+              compression_algorithm_for_level_locked(
+                  call, effective_compression_level);
+          // The following metadata will be checked and removed by the message
+          // compression filter. It will be used as the call's compression
+          // algorithm.
+          compression_md.key = GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST;
+          compression_md.value = grpc_compression_algorithm_slice(calgo);
+          additional_metadata_count++;
+        }
+        if (op->data.send_initial_metadata.count + additional_metadata_count >
+            INT_MAX) {
+          error = GRPC_CALL_ERROR_INVALID_METADATA;
+          goto done_with_error;
+        }
+        stream_op->send_initial_metadata = true;
+        call->sent_initial_metadata = true;
+        if (!prepare_application_metadata(
+                call, static_cast<int>(op->data.send_initial_metadata.count),
+                op->data.send_initial_metadata.metadata, 0, call->is_client,
+                &compression_md, static_cast<int>(additional_metadata_count))) {
+          error = GRPC_CALL_ERROR_INVALID_METADATA;
+          goto done_with_error;
+        }
+        /* TODO(ctiller): just make these the same variable? */
+        if (call->is_client) {
+          call->metadata_batch[0][0].deadline = call->send_deadline;
+        }
+        stream_op_payload->send_initial_metadata.send_initial_metadata =
+            &call->metadata_batch[0 /* is_receiving */][0 /* is_trailing */];
+        stream_op_payload->send_initial_metadata.send_initial_metadata_flags =
+            op->flags;
+        if (call->is_client) {
+          stream_op_payload->send_initial_metadata.peer_string =
+              &call->peer_string;
+        }
+        has_send_ops = true;
+        break;
+      }
+      case GRPC_OP_SEND_MESSAGE: {
+        if (!are_write_flags_valid(op->flags)) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (op->data.send_message.send_message == nullptr) {
+          error = GRPC_CALL_ERROR_INVALID_MESSAGE;
+          goto done_with_error;
+        }
+        if (call->sending_message) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        uint32_t flags = op->flags;
+        /* If the outgoing buffer is already compressed, mark it as so in the
+           flags. These will be picked up by the compression filter and further
+           (wasteful) attempts at compression skipped. */
+        if (op->data.send_message.send_message->data.raw.compression >
+            GRPC_COMPRESS_NONE) {
+          flags |= GRPC_WRITE_INTERNAL_COMPRESS;
+        }
+        stream_op->send_message = true;
+        call->sending_message = true;
+        call->sending_stream.Init(
+            &op->data.send_message.send_message->data.raw.slice_buffer, flags);
+        stream_op_payload->send_message.send_message.reset(
+            call->sending_stream.get());
+        has_send_ops = true;
+        break;
+      }
+      case GRPC_OP_SEND_CLOSE_FROM_CLIENT: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (!call->is_client) {
+          error = GRPC_CALL_ERROR_NOT_ON_SERVER;
+          goto done_with_error;
+        }
+        if (call->sent_final_op) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        stream_op->send_trailing_metadata = true;
+        call->sent_final_op = true;
+        stream_op_payload->send_trailing_metadata.send_trailing_metadata =
+            &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */];
+        has_send_ops = true;
+        break;
+      }
+      case GRPC_OP_SEND_STATUS_FROM_SERVER: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (call->is_client) {
+          error = GRPC_CALL_ERROR_NOT_ON_CLIENT;
+          goto done_with_error;
+        }
+        if (call->sent_final_op) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        if (op->data.send_status_from_server.trailing_metadata_count >
+            INT_MAX) {
+          error = GRPC_CALL_ERROR_INVALID_METADATA;
+          goto done_with_error;
+        }
+        stream_op->send_trailing_metadata = true;
+        call->sent_final_op = true;
+        GPR_ASSERT(call->send_extra_metadata_count == 0);
+        call->send_extra_metadata_count = 1;
+        call->send_extra_metadata[0].md = grpc_get_reffed_status_elem(
+            op->data.send_status_from_server.status);
+        grpc_error* status_error =
+            op->data.send_status_from_server.status == GRPC_STATUS_OK
+                ? GRPC_ERROR_NONE
+                : grpc_error_set_int(
+                      GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                          "Server returned error"),
+                      GRPC_ERROR_INT_GRPC_STATUS,
+                      static_cast<intptr_t>(
+                          op->data.send_status_from_server.status));
+        if (op->data.send_status_from_server.status_details != nullptr) {
+          call->send_extra_metadata[1].md = grpc_mdelem_from_slices(
+              GRPC_MDSTR_GRPC_MESSAGE,
+              grpc_slice_ref_internal(
+                  *op->data.send_status_from_server.status_details));
+          call->send_extra_metadata_count++;
+          if (status_error != GRPC_ERROR_NONE) {
+            char* msg = grpc_slice_to_c_string(
+                GRPC_MDVALUE(call->send_extra_metadata[1].md));
+            status_error =
+                grpc_error_set_str(status_error, GRPC_ERROR_STR_GRPC_MESSAGE,
+                                   grpc_slice_from_copied_string(msg));
+            gpr_free(msg);
+          }
+        }
+
+        gpr_atm_rel_store(&call->status_error,
+                          reinterpret_cast<gpr_atm>(status_error));
+        if (!prepare_application_metadata(
+                call,
+                static_cast<int>(
+                    op->data.send_status_from_server.trailing_metadata_count),
+                op->data.send_status_from_server.trailing_metadata, 1, 1,
+                nullptr, 0)) {
+          for (int n = 0; n < call->send_extra_metadata_count; n++) {
+            GRPC_MDELEM_UNREF(call->send_extra_metadata[n].md);
+          }
+          call->send_extra_metadata_count = 0;
+          error = GRPC_CALL_ERROR_INVALID_METADATA;
+          goto done_with_error;
+        }
+        stream_op_payload->send_trailing_metadata.send_trailing_metadata =
+            &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */];
+        has_send_ops = true;
+        break;
+      }
+      case GRPC_OP_RECV_INITIAL_METADATA: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (call->received_initial_metadata) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        call->received_initial_metadata = true;
+        call->buffered_metadata[0] =
+            op->data.recv_initial_metadata.recv_initial_metadata;
+        GRPC_CLOSURE_INIT(&call->receiving_initial_metadata_ready,
+                          receiving_initial_metadata_ready, bctl,
+                          grpc_schedule_on_exec_ctx);
+        stream_op->recv_initial_metadata = true;
+        stream_op_payload->recv_initial_metadata.recv_initial_metadata =
+            &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */];
+        stream_op_payload->recv_initial_metadata.recv_initial_metadata_ready =
+            &call->receiving_initial_metadata_ready;
+        if (!call->is_client) {
+          stream_op_payload->recv_initial_metadata.peer_string =
+              &call->peer_string;
+        }
+        ++num_recv_ops;
+        break;
+      }
+      case GRPC_OP_RECV_MESSAGE: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (call->receiving_message) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        call->receiving_message = true;
+        stream_op->recv_message = true;
+        call->receiving_buffer = op->data.recv_message.recv_message;
+        stream_op_payload->recv_message.recv_message = &call->receiving_stream;
+        GRPC_CLOSURE_INIT(&call->receiving_stream_ready,
+                          receiving_stream_ready_in_call_combiner, bctl,
+                          grpc_schedule_on_exec_ctx);
+        stream_op_payload->recv_message.recv_message_ready =
+            &call->receiving_stream_ready;
+        ++num_recv_ops;
+        break;
+      }
+      case GRPC_OP_RECV_STATUS_ON_CLIENT: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (!call->is_client) {
+          error = GRPC_CALL_ERROR_NOT_ON_SERVER;
+          goto done_with_error;
+        }
+        if (call->requested_final_op) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        call->requested_final_op = true;
+        call->buffered_metadata[1] =
+            op->data.recv_status_on_client.trailing_metadata;
+        call->final_op.client.status = op->data.recv_status_on_client.status;
+        call->final_op.client.status_details =
+            op->data.recv_status_on_client.status_details;
+        call->final_op.client.error_string =
+            op->data.recv_status_on_client.error_string;
+        stream_op->recv_trailing_metadata = true;
+        stream_op_payload->recv_trailing_metadata.recv_trailing_metadata =
+            &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
+        stream_op_payload->recv_trailing_metadata.collect_stats =
+            &call->final_info.stats.transport_stream_stats;
+        GRPC_CLOSURE_INIT(&call->receiving_trailing_metadata_ready,
+                          receiving_trailing_metadata_ready, bctl,
+                          grpc_schedule_on_exec_ctx);
+        stream_op_payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+            &call->receiving_trailing_metadata_ready;
+        ++num_recv_ops;
+        break;
+      }
+      case GRPC_OP_RECV_CLOSE_ON_SERVER: {
+        /* Flag validation: currently allow no flags */
+        if (op->flags != 0) {
+          error = GRPC_CALL_ERROR_INVALID_FLAGS;
+          goto done_with_error;
+        }
+        if (call->is_client) {
+          error = GRPC_CALL_ERROR_NOT_ON_CLIENT;
+          goto done_with_error;
+        }
+        if (call->requested_final_op) {
+          error = GRPC_CALL_ERROR_TOO_MANY_OPERATIONS;
+          goto done_with_error;
+        }
+        call->requested_final_op = true;
+        call->final_op.server.cancelled =
+            op->data.recv_close_on_server.cancelled;
+        stream_op->recv_trailing_metadata = true;
+        stream_op_payload->recv_trailing_metadata.recv_trailing_metadata =
+            &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
+        stream_op_payload->recv_trailing_metadata.collect_stats =
+            &call->final_info.stats.transport_stream_stats;
+        GRPC_CLOSURE_INIT(&call->receiving_trailing_metadata_ready,
+                          receiving_trailing_metadata_ready, bctl,
+                          grpc_schedule_on_exec_ctx);
+        stream_op_payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+            &call->receiving_trailing_metadata_ready;
+        ++num_recv_ops;
+        break;
+      }
+    }
+  }
+
+  GRPC_CALL_INTERNAL_REF(call, "completion");
+  if (!is_notify_tag_closure) {
+    GPR_ASSERT(grpc_cq_begin_op(call->cq, notify_tag));
+  }
+  bctl->set_num_steps_to_complete((has_send_ops ? 1 : 0) + num_recv_ops);
+
+  if (has_send_ops) {
+    GRPC_CLOSURE_INIT(&bctl->finish_batch, finish_batch, bctl,
+                      grpc_schedule_on_exec_ctx);
+    stream_op->on_complete = &bctl->finish_batch;
+  }
+
+  gpr_atm_rel_store(&call->any_ops_sent_atm, 1);
+  execute_batch(call, stream_op, &bctl->start_batch);
+
+done:
+  return error;
+
+done_with_error:
+  /* reverse any mutations that occurred */
+  if (stream_op->send_initial_metadata) {
+    call->sent_initial_metadata = false;
+    grpc_metadata_batch_clear(&call->metadata_batch[0][0]);
+  }
+  if (stream_op->send_message) {
+    call->sending_message = false;
+    call->sending_stream->Orphan();
+  }
+  if (stream_op->send_trailing_metadata) {
+    call->sent_final_op = false;
+    grpc_metadata_batch_clear(&call->metadata_batch[0][1]);
+  }
+  if (stream_op->recv_initial_metadata) {
+    call->received_initial_metadata = false;
+  }
+  if (stream_op->recv_message) {
+    call->receiving_message = false;
+  }
+  if (stream_op->recv_trailing_metadata) {
+    call->requested_final_op = false;
+  }
+  goto done;
+}
+
+grpc_call_error grpc_call_start_batch(grpc_call* call, const grpc_op* ops,
+                                      size_t nops, void* tag, void* reserved) {
+  grpc_call_error err;
+
+  GRPC_API_TRACE(
+      "grpc_call_start_batch(call=%p, ops=%p, nops=%lu, tag=%p, "
+      "reserved=%p)",
+      5, (call, ops, (unsigned long)nops, tag, reserved));
+
+  if (reserved != nullptr) {
+    err = GRPC_CALL_ERROR;
+  } else {
+    grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+    grpc_core::ExecCtx exec_ctx;
+    err = call_start_batch(call, ops, nops, tag, 0);
+  }
+
+  return err;
+}
+
+grpc_call_error grpc_call_start_batch_and_execute(grpc_call* call,
+                                                  const grpc_op* ops,
+                                                  size_t nops,
+                                                  grpc_closure* closure) {
+  return call_start_batch(call, ops, nops, closure, 1);
+}
+
+void grpc_call_context_set(grpc_call* call, grpc_context_index elem,
+                           void* value, void (*destroy)(void* value)) {
+  if (call->context[elem].destroy) {
+    call->context[elem].destroy(call->context[elem].value);
+  }
+  call->context[elem].value = value;
+  call->context[elem].destroy = destroy;
+}
+
+void* grpc_call_context_get(grpc_call* call, grpc_context_index elem) {
+  return call->context[elem].value;
+}
+
+uint8_t grpc_call_is_client(grpc_call* call) { return call->is_client; }
+
+grpc_compression_algorithm grpc_call_compression_for_level(
+    grpc_call* call, grpc_compression_level level) {
+  grpc_compression_algorithm algo =
+      compression_algorithm_for_level_locked(call, level);
+  return algo;
+}
+
+const char* grpc_call_error_to_string(grpc_call_error error) {
+  switch (error) {
+    case GRPC_CALL_ERROR:
+      return "GRPC_CALL_ERROR";
+    case GRPC_CALL_ERROR_ALREADY_ACCEPTED:
+      return "GRPC_CALL_ERROR_ALREADY_ACCEPTED";
+    case GRPC_CALL_ERROR_ALREADY_FINISHED:
+      return "GRPC_CALL_ERROR_ALREADY_FINISHED";
+    case GRPC_CALL_ERROR_ALREADY_INVOKED:
+      return "GRPC_CALL_ERROR_ALREADY_INVOKED";
+    case GRPC_CALL_ERROR_BATCH_TOO_BIG:
+      return "GRPC_CALL_ERROR_BATCH_TOO_BIG";
+    case GRPC_CALL_ERROR_INVALID_FLAGS:
+      return "GRPC_CALL_ERROR_INVALID_FLAGS";
+    case GRPC_CALL_ERROR_INVALID_MESSAGE:
+      return "GRPC_CALL_ERROR_INVALID_MESSAGE";
+    case GRPC_CALL_ERROR_INVALID_METADATA:
+      return "GRPC_CALL_ERROR_INVALID_METADATA";
+    case GRPC_CALL_ERROR_NOT_INVOKED:
+      return "GRPC_CALL_ERROR_NOT_INVOKED";
+    case GRPC_CALL_ERROR_NOT_ON_CLIENT:
+      return "GRPC_CALL_ERROR_NOT_ON_CLIENT";
+    case GRPC_CALL_ERROR_NOT_ON_SERVER:
+      return "GRPC_CALL_ERROR_NOT_ON_SERVER";
+    case GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE:
+      return "GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE";
+    case GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH:
+      return "GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH";
+    case GRPC_CALL_ERROR_TOO_MANY_OPERATIONS:
+      return "GRPC_CALL_ERROR_TOO_MANY_OPERATIONS";
+    case GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN:
+      return "GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN";
+    case GRPC_CALL_OK:
+      return "GRPC_CALL_OK";
+  }
+  GPR_UNREACHABLE_CODE(return "GRPC_CALL_ERROR_UNKNOW");
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.h
new file mode 100644
index 0000000..a33664a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call.h	
@@ -0,0 +1,125 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_H
+#define GRPC_CORE_LIB_SURFACE_CALL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/surface/api_trace.h"
+
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/compression_types.h>
+
+typedef void (*grpc_ioreq_completion_func)(grpc_call* call, int success,
+                                           void* user_data);
+
+typedef struct grpc_call_create_args {
+  grpc_channel* channel;
+  grpc_server* server;
+
+  grpc_call* parent;
+  uint32_t propagation_mask;
+
+  grpc_completion_queue* cq;
+  /* if not NULL, it'll be used in lieu of cq */
+  grpc_pollset_set* pollset_set_alternative;
+
+  const void* server_transport_data;
+
+  grpc_mdelem* add_initial_metadata;
+  size_t add_initial_metadata_count;
+
+  grpc_millis send_deadline;
+} grpc_call_create_args;
+
+/* Create a new call based on \a args.
+   Regardless of success or failure, always returns a valid new call into *call
+   */
+grpc_error* grpc_call_create(const grpc_call_create_args* args,
+                             grpc_call** call);
+
+void grpc_call_set_completion_queue(grpc_call* call, grpc_completion_queue* cq);
+
+#ifndef NDEBUG
+void grpc_call_internal_ref(grpc_call* call, const char* reason);
+void grpc_call_internal_unref(grpc_call* call, const char* reason);
+#define GRPC_CALL_INTERNAL_REF(call, reason) \
+  grpc_call_internal_ref(call, reason)
+#define GRPC_CALL_INTERNAL_UNREF(call, reason) \
+  grpc_call_internal_unref(call, reason)
+#else
+void grpc_call_internal_ref(grpc_call* call);
+void grpc_call_internal_unref(grpc_call* call);
+#define GRPC_CALL_INTERNAL_REF(call, reason) grpc_call_internal_ref(call)
+#define GRPC_CALL_INTERNAL_UNREF(call, reason) grpc_call_internal_unref(call)
+#endif
+
+grpc_core::Arena* grpc_call_get_arena(grpc_call* call);
+
+grpc_call_stack* grpc_call_get_call_stack(grpc_call* call);
+
+grpc_call_error grpc_call_start_batch_and_execute(grpc_call* call,
+                                                  const grpc_op* ops,
+                                                  size_t nops,
+                                                  grpc_closure* closure);
+
+/* gRPC core internal version of grpc_call_cancel that does not create
+ * exec_ctx. */
+void grpc_call_cancel_internal(grpc_call* call);
+
+/* Given the top call_element, get the call object. */
+grpc_call* grpc_call_from_top_element(grpc_call_element* surface_element);
+
+void grpc_call_log_batch(const char* file, int line, gpr_log_severity severity,
+                         const grpc_op* ops, size_t nops);
+
+/* Set a context pointer.
+   No thread safety guarantees are made wrt this value. */
+/* TODO(#9731): add exec_ctx to destroy */
+void grpc_call_context_set(grpc_call* call, grpc_context_index elem,
+                           void* value, void (*destroy)(void* value));
+/* Get a context pointer. */
+void* grpc_call_context_get(grpc_call* call, grpc_context_index elem);
+
+#define GRPC_CALL_LOG_BATCH(sev, ops, nops)        \
+  do {                                             \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace)) { \
+      grpc_call_log_batch(sev, ops, nops);         \
+    }                                              \
+  } while (0)
+
+uint8_t grpc_call_is_client(grpc_call* call);
+
+/* Get the estimated memory size for a call BESIDES the call stack. Combined
+ * with the size of the call stack, it helps estimate the arena size for the
+ * initial call. */
+size_t grpc_call_get_initial_size_estimate();
+
+/* Return an appropriate compression algorithm for the requested compression \a
+ * level in the context of \a call. */
+grpc_compression_algorithm grpc_call_compression_for_level(
+    grpc_call* call, grpc_compression_level level);
+
+extern grpc_core::TraceFlag grpc_call_error_trace;
+extern grpc_core::TraceFlag grpc_compression_trace;
+
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_details.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_details.cc
new file mode 100644
index 0000000..55e9e34
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_details.cc	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+
+#include <string.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+
+void grpc_call_details_init(grpc_call_details* cd) {
+  GRPC_API_TRACE("grpc_call_details_init(cd=%p)", 1, (cd));
+  cd->method = grpc_empty_slice();
+  cd->host = grpc_empty_slice();
+}
+
+void grpc_call_details_destroy(grpc_call_details* cd) {
+  GRPC_API_TRACE("grpc_call_details_destroy(cd=%p)", 1, (cd));
+  grpc_core::ExecCtx exec_ctx;
+  grpc_slice_unref_internal(cd->method);
+  grpc_slice_unref_internal(cd->host);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_log_batch.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_log_batch.cc
new file mode 100644
index 0000000..23c344a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_log_batch.cc	
@@ -0,0 +1,119 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/call.h"
+
+#include <inttypes.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+static void add_metadata(gpr_strvec* b, const grpc_metadata* md, size_t count) {
+  size_t i;
+  if (md == nullptr) {
+    gpr_strvec_add(b, gpr_strdup("(nil)"));
+    return;
+  }
+  for (i = 0; i < count; i++) {
+    gpr_strvec_add(b, gpr_strdup("\nkey="));
+    gpr_strvec_add(b, grpc_slice_to_c_string(md[i].key));
+
+    gpr_strvec_add(b, gpr_strdup(" value="));
+    gpr_strvec_add(b,
+                   grpc_dump_slice(md[i].value, GPR_DUMP_HEX | GPR_DUMP_ASCII));
+  }
+}
+
+char* grpc_op_string(const grpc_op* op) {
+  char* tmp;
+  char* out;
+
+  gpr_strvec b;
+  gpr_strvec_init(&b);
+
+  switch (op->op) {
+    case GRPC_OP_SEND_INITIAL_METADATA:
+      gpr_strvec_add(&b, gpr_strdup("SEND_INITIAL_METADATA"));
+      add_metadata(&b, op->data.send_initial_metadata.metadata,
+                   op->data.send_initial_metadata.count);
+      break;
+    case GRPC_OP_SEND_MESSAGE:
+      gpr_asprintf(&tmp, "SEND_MESSAGE ptr=%p",
+                   op->data.send_message.send_message);
+      gpr_strvec_add(&b, tmp);
+      break;
+    case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
+      gpr_strvec_add(&b, gpr_strdup("SEND_CLOSE_FROM_CLIENT"));
+      break;
+    case GRPC_OP_SEND_STATUS_FROM_SERVER:
+      gpr_asprintf(&tmp, "SEND_STATUS_FROM_SERVER status=%d details=",
+                   op->data.send_status_from_server.status);
+      gpr_strvec_add(&b, tmp);
+      if (op->data.send_status_from_server.status_details != nullptr) {
+        gpr_strvec_add(&b, grpc_dump_slice(
+                               *op->data.send_status_from_server.status_details,
+                               GPR_DUMP_ASCII));
+      } else {
+        gpr_strvec_add(&b, gpr_strdup("(null)"));
+      }
+      add_metadata(&b, op->data.send_status_from_server.trailing_metadata,
+                   op->data.send_status_from_server.trailing_metadata_count);
+      break;
+    case GRPC_OP_RECV_INITIAL_METADATA:
+      gpr_asprintf(&tmp, "RECV_INITIAL_METADATA ptr=%p",
+                   op->data.recv_initial_metadata.recv_initial_metadata);
+      gpr_strvec_add(&b, tmp);
+      break;
+    case GRPC_OP_RECV_MESSAGE:
+      gpr_asprintf(&tmp, "RECV_MESSAGE ptr=%p",
+                   op->data.recv_message.recv_message);
+      gpr_strvec_add(&b, tmp);
+      break;
+    case GRPC_OP_RECV_STATUS_ON_CLIENT:
+      gpr_asprintf(&tmp,
+                   "RECV_STATUS_ON_CLIENT metadata=%p status=%p details=%p",
+                   op->data.recv_status_on_client.trailing_metadata,
+                   op->data.recv_status_on_client.status,
+                   op->data.recv_status_on_client.status_details);
+      gpr_strvec_add(&b, tmp);
+      break;
+    case GRPC_OP_RECV_CLOSE_ON_SERVER:
+      gpr_asprintf(&tmp, "RECV_CLOSE_ON_SERVER cancelled=%p",
+                   op->data.recv_close_on_server.cancelled);
+      gpr_strvec_add(&b, tmp);
+  }
+  out = gpr_strvec_flatten(&b, nullptr);
+  gpr_strvec_destroy(&b);
+
+  return out;
+}
+
+void grpc_call_log_batch(const char* file, int line, gpr_log_severity severity,
+                         const grpc_op* ops, size_t nops) {
+  char* tmp;
+  size_t i;
+  for (i = 0; i < nops; i++) {
+    tmp = grpc_op_string(&ops[i]);
+    gpr_log(file, line, severity, "ops[%" PRIuPTR "]: %s", i, tmp);
+    gpr_free(tmp);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_test_only.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_test_only.h
new file mode 100644
index 0000000..dbd1a86
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/call_test_only.h	
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
+#define GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+/** Return the message compression algorithm from \a call.
+ *
+ * \warning This function should \b only be used in test code. */
+grpc_compression_algorithm grpc_call_test_only_get_compression_algorithm(
+    grpc_call* call);
+
+/** Return the message flags from \a call.
+ *
+ * \warning This function should \b only be used in test code. */
+uint32_t grpc_call_test_only_get_message_flags(grpc_call* call);
+
+/** Returns a bitset for the encodings (compression algorithms) supported by \a
+ * call's peer.
+ *
+ * To be indexed by grpc_compression_algorithm enum values. */
+uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call* call);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.cc
new file mode 100644
index 0000000..9f5abca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.cc	
@@ -0,0 +1,521 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/channel.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+/** Cache grpc-status: X mdelems for X = 0..NUM_CACHED_STATUS_ELEMS.
+ *  Avoids needing to take a metadata context lock for sending status
+ *  if the status code is <= NUM_CACHED_STATUS_ELEMS.
+ *  Sized to allow the most commonly used codes to fit in
+ *  (OK, Cancelled, Unknown). */
+#define NUM_CACHED_STATUS_ELEMS 3
+
+typedef struct registered_call {
+  grpc_mdelem path;
+  grpc_mdelem authority;
+  struct registered_call* next;
+} registered_call;
+
+static void destroy_channel(void* arg, grpc_error* error);
+
+grpc_channel* grpc_channel_create_with_builder(
+    grpc_channel_stack_builder* builder,
+    grpc_channel_stack_type channel_stack_type) {
+  char* target = gpr_strdup(grpc_channel_stack_builder_get_target(builder));
+  grpc_channel_args* args = grpc_channel_args_copy(
+      grpc_channel_stack_builder_get_channel_arguments(builder));
+  grpc_resource_user* resource_user =
+      grpc_channel_stack_builder_get_resource_user(builder);
+  grpc_channel* channel;
+  if (channel_stack_type == GRPC_SERVER_CHANNEL) {
+    GRPC_STATS_INC_SERVER_CHANNELS_CREATED();
+  } else {
+    GRPC_STATS_INC_CLIENT_CHANNELS_CREATED();
+  }
+  grpc_error* error = grpc_channel_stack_builder_finish(
+      builder, sizeof(grpc_channel), 1, destroy_channel, nullptr,
+      reinterpret_cast<void**>(&channel));
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR, "channel stack builder failed: %s",
+            grpc_error_string(error));
+    GRPC_ERROR_UNREF(error);
+    gpr_free(target);
+    grpc_channel_args_destroy(args);
+    return channel;
+  }
+  channel->target = target;
+  channel->resource_user = resource_user;
+  channel->is_client = grpc_channel_stack_type_is_client(channel_stack_type);
+  gpr_mu_init(&channel->registered_call_mu);
+  channel->registered_calls = nullptr;
+
+  gpr_atm_no_barrier_store(
+      &channel->call_size_estimate,
+      (gpr_atm)CHANNEL_STACK_FROM_CHANNEL(channel)->call_stack_size +
+          grpc_call_get_initial_size_estimate());
+
+  grpc_compression_options_init(&channel->compression_options);
+  for (size_t i = 0; i < args->num_args; i++) {
+    if (0 ==
+        strcmp(args->args[i].key, GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
+      channel->compression_options.default_level.is_set = true;
+      channel->compression_options.default_level.level =
+          static_cast<grpc_compression_level>(grpc_channel_arg_get_integer(
+              &args->args[i],
+              {GRPC_COMPRESS_LEVEL_NONE, GRPC_COMPRESS_LEVEL_NONE,
+               GRPC_COMPRESS_LEVEL_COUNT - 1}));
+    } else if (0 == strcmp(args->args[i].key,
+                           GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
+      channel->compression_options.default_algorithm.is_set = true;
+      channel->compression_options.default_algorithm.algorithm =
+          static_cast<grpc_compression_algorithm>(grpc_channel_arg_get_integer(
+              &args->args[i], {GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE,
+                               GRPC_COMPRESS_ALGORITHMS_COUNT - 1}));
+    } else if (0 ==
+               strcmp(args->args[i].key,
+                      GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
+      channel->compression_options.enabled_algorithms_bitset =
+          static_cast<uint32_t>(args->args[i].value.integer) |
+          0x1; /* always support no compression */
+    } else if (0 == strcmp(args->args[i].key, GRPC_ARG_CHANNELZ_CHANNEL_NODE)) {
+      if (args->args[i].type == GRPC_ARG_POINTER) {
+        GPR_ASSERT(args->args[i].value.pointer.p != nullptr);
+        channel->channelz_node = static_cast<grpc_core::channelz::ChannelNode*>(
+                                     args->args[i].value.pointer.p)
+                                     ->Ref();
+      } else {
+        gpr_log(GPR_DEBUG,
+                GRPC_ARG_CHANNELZ_CHANNEL_NODE " should be a pointer");
+      }
+    }
+  }
+
+  grpc_channel_args_destroy(args);
+  return channel;
+}
+
+static grpc_core::UniquePtr<char> get_default_authority(
+    const grpc_channel_args* input_args) {
+  bool has_default_authority = false;
+  char* ssl_override = nullptr;
+  grpc_core::UniquePtr<char> default_authority;
+  const size_t num_args = input_args != nullptr ? input_args->num_args : 0;
+  for (size_t i = 0; i < num_args; ++i) {
+    if (0 == strcmp(input_args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) {
+      has_default_authority = true;
+    } else if (0 == strcmp(input_args->args[i].key,
+                           GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) {
+      ssl_override = grpc_channel_arg_get_string(&input_args->args[i]);
+    }
+  }
+  if (!has_default_authority && ssl_override != nullptr) {
+    default_authority.reset(gpr_strdup(ssl_override));
+  }
+  return default_authority;
+}
+
+static grpc_channel_args* build_channel_args(
+    const grpc_channel_args* input_args, char* default_authority) {
+  grpc_arg new_args[1];
+  size_t num_new_args = 0;
+  if (default_authority != nullptr) {
+    new_args[num_new_args++] = grpc_channel_arg_string_create(
+        const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), default_authority);
+  }
+  return grpc_channel_args_copy_and_add(input_args, new_args, num_new_args);
+}
+
+namespace {
+
+void* channelz_node_copy(void* p) {
+  grpc_core::channelz::ChannelNode* node =
+      static_cast<grpc_core::channelz::ChannelNode*>(p);
+  node->Ref().release();
+  return p;
+}
+void channelz_node_destroy(void* p) {
+  grpc_core::channelz::ChannelNode* node =
+      static_cast<grpc_core::channelz::ChannelNode*>(p);
+  node->Unref();
+}
+int channelz_node_cmp(void* p1, void* p2) { return GPR_ICMP(p1, p2); }
+const grpc_arg_pointer_vtable channelz_node_arg_vtable = {
+    channelz_node_copy, channelz_node_destroy, channelz_node_cmp};
+
+void CreateChannelzNode(grpc_channel_stack_builder* builder) {
+  const grpc_channel_args* args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  // Check whether channelz is enabled.
+  const bool channelz_enabled = grpc_channel_arg_get_bool(
+      grpc_channel_args_find(args, GRPC_ARG_ENABLE_CHANNELZ),
+      GRPC_ENABLE_CHANNELZ_DEFAULT);
+  if (!channelz_enabled) return;
+  // Get parameters needed to create the channelz node.
+  const size_t channel_tracer_max_memory = grpc_channel_arg_get_integer(
+      grpc_channel_args_find(args,
+                             GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE),
+      {GRPC_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE_DEFAULT, 0, INT_MAX});
+  const intptr_t channelz_parent_uuid =
+      grpc_core::channelz::GetParentUuidFromArgs(*args);
+  // Create the channelz node.
+  const char* target = grpc_channel_stack_builder_get_target(builder);
+  grpc_core::RefCountedPtr<grpc_core::channelz::ChannelNode> channelz_node =
+      grpc_core::MakeRefCounted<grpc_core::channelz::ChannelNode>(
+          target != nullptr ? target : "", channel_tracer_max_memory,
+          channelz_parent_uuid);
+  channelz_node->AddTraceEvent(
+      grpc_core::channelz::ChannelTrace::Severity::Info,
+      grpc_slice_from_static_string("Channel created"));
+  // Update parent channel node, if any.
+  if (channelz_parent_uuid > 0) {
+    grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> parent_node =
+        grpc_core::channelz::ChannelzRegistry::Get(channelz_parent_uuid);
+    if (parent_node != nullptr) {
+      grpc_core::channelz::ChannelNode* parent =
+          static_cast<grpc_core::channelz::ChannelNode*>(parent_node.get());
+      parent->AddChildChannel(channelz_node->uuid());
+    }
+  }
+  // Add channelz node to channel args.
+  // We remove the arg for the parent uuid, since we no longer need it.
+  grpc_arg new_arg = grpc_channel_arg_pointer_create(
+      const_cast<char*>(GRPC_ARG_CHANNELZ_CHANNEL_NODE), channelz_node.get(),
+      &channelz_node_arg_vtable);
+  const char* args_to_remove[] = {GRPC_ARG_CHANNELZ_PARENT_UUID};
+  grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(
+      args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), &new_arg, 1);
+  grpc_channel_stack_builder_set_channel_arguments(builder, new_args);
+  grpc_channel_args_destroy(new_args);
+}
+
+}  // namespace
+
+grpc_channel* grpc_channel_create(const char* target,
+                                  const grpc_channel_args* input_args,
+                                  grpc_channel_stack_type channel_stack_type,
+                                  grpc_transport* optional_transport,
+                                  grpc_resource_user* resource_user) {
+  // We need to make sure that grpc_shutdown() does not shut things down
+  // until after the channel is destroyed.  However, the channel may not
+  // actually be destroyed by the time grpc_channel_destroy() returns,
+  // since there may be other existing refs to the channel.  If those
+  // refs are held by things that are visible to the wrapped language
+  // (such as outstanding calls on the channel), then the wrapped
+  // language can be responsible for making sure that grpc_shutdown()
+  // does not run until after those refs are released.  However, the
+  // channel may also have refs to itself held internally for various
+  // things that need to be cleaned up at channel destruction (e.g.,
+  // LB policies, subchannels, etc), and because these refs are not
+  // visible to the wrapped language, it cannot be responsible for
+  // deferring grpc_shutdown() until after they are released.  To
+  // accommodate that, we call grpc_init() here and then call
+  // grpc_shutdown() when the channel is actually destroyed, thus
+  // ensuring that shutdown is deferred until that point.
+  grpc_init();
+  grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create();
+  const grpc_core::UniquePtr<char> default_authority =
+      get_default_authority(input_args);
+  grpc_channel_args* args =
+      build_channel_args(input_args, default_authority.get());
+  if (grpc_channel_stack_type_is_client(channel_stack_type)) {
+    auto channel_args_mutator =
+        grpc_channel_args_get_client_channel_creation_mutator();
+    if (channel_args_mutator != nullptr) {
+      args = channel_args_mutator(target, args, channel_stack_type);
+    }
+  }
+  grpc_channel_stack_builder_set_channel_arguments(builder, args);
+  grpc_channel_args_destroy(args);
+  grpc_channel_stack_builder_set_target(builder, target);
+  grpc_channel_stack_builder_set_transport(builder, optional_transport);
+  grpc_channel_stack_builder_set_resource_user(builder, resource_user);
+  if (!grpc_channel_init_create_stack(builder, channel_stack_type)) {
+    grpc_channel_stack_builder_destroy(builder);
+    if (resource_user != nullptr) {
+      grpc_resource_user_free(resource_user, GRPC_RESOURCE_QUOTA_CHANNEL_SIZE);
+    }
+    grpc_shutdown();  // Since we won't call destroy_channel().
+    return nullptr;
+  }
+  // We only need to do this for clients here. For servers, this will be
+  // done in src/core/lib/surface/server.cc.
+  if (grpc_channel_stack_type_is_client(channel_stack_type)) {
+    CreateChannelzNode(builder);
+  }
+  grpc_channel* channel =
+      grpc_channel_create_with_builder(builder, channel_stack_type);
+  if (channel == nullptr) {
+    grpc_shutdown();  // Since we won't call destroy_channel().
+  }
+  return channel;
+}
+
+size_t grpc_channel_get_call_size_estimate(grpc_channel* channel) {
+#define ROUND_UP_SIZE 256
+  /* We round up our current estimate to the NEXT value of ROUND_UP_SIZE.
+     This ensures:
+      1. a consistent size allocation when our estimate is drifting slowly
+         (which is common) - which tends to help most allocators reuse memory
+      2. a small amount of allowed growth over the estimate without hitting
+         the arena size doubling case, reducing overall memory usage */
+  return (static_cast<size_t>(
+              gpr_atm_no_barrier_load(&channel->call_size_estimate)) +
+          2 * ROUND_UP_SIZE) &
+         ~static_cast<size_t>(ROUND_UP_SIZE - 1);
+}
+
+void grpc_channel_update_call_size_estimate(grpc_channel* channel,
+                                            size_t size) {
+  size_t cur = static_cast<size_t>(
+      gpr_atm_no_barrier_load(&channel->call_size_estimate));
+  if (cur < size) {
+    /* size grew: update estimate */
+    gpr_atm_no_barrier_cas(&channel->call_size_estimate,
+                           static_cast<gpr_atm>(cur),
+                           static_cast<gpr_atm>(size));
+    /* if we lose: never mind, something else will likely update soon enough */
+  } else if (cur == size) {
+    /* no change: holding pattern */
+  } else if (cur > 0) {
+    /* size shrank: decrease estimate */
+    gpr_atm_no_barrier_cas(
+        &channel->call_size_estimate, static_cast<gpr_atm>(cur),
+        static_cast<gpr_atm>(GPR_MIN(cur - 1, (255 * cur + size) / 256)));
+    /* if we lose: never mind, something else will likely update soon enough */
+  }
+}
+
+char* grpc_channel_get_target(grpc_channel* channel) {
+  GRPC_API_TRACE("grpc_channel_get_target(channel=%p)", 1, (channel));
+  return gpr_strdup(channel->target);
+}
+
+void grpc_channel_get_info(grpc_channel* channel,
+                           const grpc_channel_info* channel_info) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_channel_element* elem =
+      grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
+  elem->filter->get_channel_info(elem, channel_info);
+}
+
+void grpc_channel_reset_connect_backoff(grpc_channel* channel) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE("grpc_channel_reset_connect_backoff(channel=%p)", 1,
+                 (channel));
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  op->reset_connect_backoff = true;
+  grpc_channel_element* elem =
+      grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
+  elem->filter->start_transport_op(elem, op);
+}
+
+static grpc_call* grpc_channel_create_call_internal(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_completion_queue* cq, grpc_pollset_set* pollset_set_alternative,
+    grpc_mdelem path_mdelem, grpc_mdelem authority_mdelem,
+    grpc_millis deadline) {
+  grpc_mdelem send_metadata[2];
+  size_t num_metadata = 0;
+
+  GPR_ASSERT(channel->is_client);
+  GPR_ASSERT(!(cq != nullptr && pollset_set_alternative != nullptr));
+
+  send_metadata[num_metadata++] = path_mdelem;
+  if (!GRPC_MDISNULL(authority_mdelem)) {
+    send_metadata[num_metadata++] = authority_mdelem;
+  }
+
+  grpc_call_create_args args;
+  args.channel = channel;
+  args.server = nullptr;
+  args.parent = parent_call;
+  args.propagation_mask = propagation_mask;
+  args.cq = cq;
+  args.pollset_set_alternative = pollset_set_alternative;
+  args.server_transport_data = nullptr;
+  args.add_initial_metadata = send_metadata;
+  args.add_initial_metadata_count = num_metadata;
+  args.send_deadline = deadline;
+
+  grpc_call* call;
+  GRPC_LOG_IF_ERROR("call_create", grpc_call_create(&args, &call));
+  return call;
+}
+
+grpc_call* grpc_channel_create_call(grpc_channel* channel,
+                                    grpc_call* parent_call,
+                                    uint32_t propagation_mask,
+                                    grpc_completion_queue* cq,
+                                    grpc_slice method, const grpc_slice* host,
+                                    gpr_timespec deadline, void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_core::ExecCtx exec_ctx;
+  grpc_call* call = grpc_channel_create_call_internal(
+      channel, parent_call, propagation_mask, cq, nullptr,
+      grpc_mdelem_create(GRPC_MDSTR_PATH, method, nullptr),
+      host != nullptr ? grpc_mdelem_create(GRPC_MDSTR_AUTHORITY, *host, nullptr)
+                      : GRPC_MDNULL,
+      grpc_timespec_to_millis_round_up(deadline));
+
+  return call;
+}
+
+grpc_call* grpc_channel_create_pollset_set_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_pollset_set* pollset_set, const grpc_slice& method,
+    const grpc_slice* host, grpc_millis deadline, void* reserved) {
+  GPR_ASSERT(!reserved);
+  return grpc_channel_create_call_internal(
+      channel, parent_call, propagation_mask, nullptr, pollset_set,
+      grpc_mdelem_create(GRPC_MDSTR_PATH, method, nullptr),
+      host != nullptr ? grpc_mdelem_create(GRPC_MDSTR_AUTHORITY, *host, nullptr)
+                      : GRPC_MDNULL,
+      deadline);
+}
+
+void* grpc_channel_register_call(grpc_channel* channel, const char* method,
+                                 const char* host, void* reserved) {
+  registered_call* rc =
+      static_cast<registered_call*>(gpr_malloc(sizeof(registered_call)));
+  GRPC_API_TRACE(
+      "grpc_channel_register_call(channel=%p, method=%s, host=%s, reserved=%p)",
+      4, (channel, method, host, reserved));
+  GPR_ASSERT(!reserved);
+  grpc_core::ExecCtx exec_ctx;
+
+  rc->path = grpc_mdelem_from_slices(GRPC_MDSTR_PATH,
+                                     grpc_core::ExternallyManagedSlice(method));
+  rc->authority =
+      host ? grpc_mdelem_from_slices(GRPC_MDSTR_AUTHORITY,
+                                     grpc_core::ExternallyManagedSlice(host))
+           : GRPC_MDNULL;
+  gpr_mu_lock(&channel->registered_call_mu);
+  rc->next = channel->registered_calls;
+  channel->registered_calls = rc;
+  gpr_mu_unlock(&channel->registered_call_mu);
+
+  return rc;
+}
+
+grpc_call* grpc_channel_create_registered_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_completion_queue* completion_queue, void* registered_call_handle,
+    gpr_timespec deadline, void* reserved) {
+  registered_call* rc = static_cast<registered_call*>(registered_call_handle);
+  GRPC_API_TRACE(
+      "grpc_channel_create_registered_call("
+      "channel=%p, parent_call=%p, propagation_mask=%x, completion_queue=%p, "
+      "registered_call_handle=%p, "
+      "deadline=gpr_timespec { tv_sec: %" PRId64
+      ", tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      9,
+      (channel, parent_call, (unsigned)propagation_mask, completion_queue,
+       registered_call_handle, deadline.tv_sec, deadline.tv_nsec,
+       (int)deadline.clock_type, reserved));
+  GPR_ASSERT(!reserved);
+  grpc_core::ExecCtx exec_ctx;
+  grpc_call* call = grpc_channel_create_call_internal(
+      channel, parent_call, propagation_mask, completion_queue, nullptr,
+      GRPC_MDELEM_REF(rc->path), GRPC_MDELEM_REF(rc->authority),
+      grpc_timespec_to_millis_round_up(deadline));
+
+  return call;
+}
+
+static void destroy_channel(void* arg, grpc_error* /*error*/) {
+  grpc_channel* channel = static_cast<grpc_channel*>(arg);
+  if (channel->channelz_node != nullptr) {
+    if (channel->channelz_node->parent_uuid() > 0) {
+      grpc_core::RefCountedPtr<grpc_core::channelz::BaseNode> parent_node =
+          grpc_core::channelz::ChannelzRegistry::Get(
+              channel->channelz_node->parent_uuid());
+      if (parent_node != nullptr) {
+        grpc_core::channelz::ChannelNode* parent =
+            static_cast<grpc_core::channelz::ChannelNode*>(parent_node.get());
+        parent->RemoveChildChannel(channel->channelz_node->uuid());
+      }
+    }
+    channel->channelz_node->AddTraceEvent(
+        grpc_core::channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string("Channel destroyed"));
+    channel->channelz_node.reset();
+  }
+  grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CHANNEL(channel));
+  while (channel->registered_calls) {
+    registered_call* rc = channel->registered_calls;
+    channel->registered_calls = rc->next;
+    GRPC_MDELEM_UNREF(rc->path);
+    GRPC_MDELEM_UNREF(rc->authority);
+    gpr_free(rc);
+  }
+  if (channel->resource_user != nullptr) {
+    grpc_resource_user_free(channel->resource_user,
+                            GRPC_RESOURCE_QUOTA_CHANNEL_SIZE);
+  }
+  gpr_mu_destroy(&channel->registered_call_mu);
+  gpr_free(channel->target);
+  gpr_free(channel);
+  // See comment in grpc_channel_create() for why we do this.
+  grpc_shutdown();
+}
+
+void grpc_channel_destroy_internal(grpc_channel* channel) {
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  grpc_channel_element* elem;
+  GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel));
+  op->disconnect_with_error =
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Channel Destroyed");
+  elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0);
+  elem->filter->start_transport_op(elem, op);
+  GRPC_CHANNEL_INTERNAL_UNREF(channel, "channel");
+}
+
+void grpc_channel_destroy(grpc_channel* channel) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_channel_destroy_internal(channel);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.h
new file mode 100644
index 0000000..280fc96
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel.h	
@@ -0,0 +1,127 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+
+grpc_channel* grpc_channel_create(const char* target,
+                                  const grpc_channel_args* args,
+                                  grpc_channel_stack_type channel_stack_type,
+                                  grpc_transport* optional_transport,
+                                  grpc_resource_user* resource_user = nullptr);
+
+/** The same as grpc_channel_destroy, but doesn't create an ExecCtx, and so
+ * is safe to use from within core. */
+void grpc_channel_destroy_internal(grpc_channel* channel);
+
+grpc_channel* grpc_channel_create_with_builder(
+    grpc_channel_stack_builder* builder,
+    grpc_channel_stack_type channel_stack_type);
+
+/** Create a call given a grpc_channel, in order to call \a method.
+    Progress is tied to activity on \a pollset_set. The returned call object is
+    meant to be used with \a grpc_call_start_batch_and_execute, which relies on
+    callbacks to signal completions. \a method and \a host need
+    only live through the invocation of this function. If \a parent_call is
+    non-NULL, it must be a server-side call. It will be used to propagate
+    properties from the server call to this new client call, depending on the
+    value of \a propagation_mask (see propagation_bits.h for possible values) */
+grpc_call* grpc_channel_create_pollset_set_call(
+    grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+    grpc_pollset_set* pollset_set, const grpc_slice& method,
+    const grpc_slice* host, grpc_millis deadline, void* reserved);
+
+/** Get a (borrowed) pointer to this channels underlying channel stack */
+grpc_channel_stack* grpc_channel_get_channel_stack(grpc_channel* channel);
+
+grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+    grpc_channel* channel);
+
+size_t grpc_channel_get_call_size_estimate(grpc_channel* channel);
+void grpc_channel_update_call_size_estimate(grpc_channel* channel, size_t size);
+
+struct registered_call;
+struct grpc_channel {
+  int is_client;
+  grpc_compression_options compression_options;
+
+  gpr_atm call_size_estimate;
+  grpc_resource_user* resource_user;
+
+  gpr_mu registered_call_mu;
+  registered_call* registered_calls;
+
+  grpc_core::RefCountedPtr<grpc_core::channelz::ChannelNode> channelz_node;
+
+  char* target;
+};
+#define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack*)((c) + 1))
+
+inline grpc_compression_options grpc_channel_compression_options(
+    const grpc_channel* channel) {
+  return channel->compression_options;
+}
+
+inline grpc_channel_stack* grpc_channel_get_channel_stack(
+    grpc_channel* channel) {
+  return CHANNEL_STACK_FROM_CHANNEL(channel);
+}
+
+inline grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+    grpc_channel* channel) {
+  return channel->channelz_node.get();
+}
+
+#ifndef NDEBUG
+inline void grpc_channel_internal_ref(grpc_channel* channel,
+                                      const char* reason) {
+  GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel,
+                                        const char* reason) {
+  GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+  grpc_channel_internal_ref(channel, reason)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+  grpc_channel_internal_unref(channel, reason)
+#else
+inline void grpc_channel_internal_ref(grpc_channel* channel) {
+  GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel) {
+  GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+  grpc_channel_internal_ref(channel)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+  grpc_channel_internal_unref(channel)
+#endif
+
+/** Return the channel's compression options. */
+grpc_compression_options grpc_channel_compression_options(
+    const grpc_channel* channel);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.cc
new file mode 100644
index 0000000..62eb1c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.cc	
@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/channel_init.h"
+
+#include <grpc/support/alloc.h>
+
+typedef struct stage_slot {
+  grpc_channel_init_stage fn;
+  void* arg;
+  int priority;
+  size_t insertion_order;
+} stage_slot;
+
+typedef struct stage_slots {
+  stage_slot* slots;
+  size_t num_slots;
+  size_t cap_slots;
+} stage_slots;
+
+static stage_slots g_slots[GRPC_NUM_CHANNEL_STACK_TYPES];
+static bool g_finalized;
+
+void grpc_channel_init_init(void) {
+  for (int i = 0; i < GRPC_NUM_CHANNEL_STACK_TYPES; i++) {
+    g_slots[i].slots = nullptr;
+    g_slots[i].num_slots = 0;
+    g_slots[i].cap_slots = 0;
+  }
+  g_finalized = false;
+}
+
+void grpc_channel_init_register_stage(grpc_channel_stack_type type,
+                                      int priority,
+                                      grpc_channel_init_stage stage,
+                                      void* stage_arg) {
+  GPR_ASSERT(!g_finalized);
+  if (g_slots[type].cap_slots == g_slots[type].num_slots) {
+    g_slots[type].cap_slots = GPR_MAX(8, 3 * g_slots[type].cap_slots / 2);
+    g_slots[type].slots = static_cast<stage_slot*>(
+        gpr_realloc(g_slots[type].slots,
+                    g_slots[type].cap_slots * sizeof(*g_slots[type].slots)));
+  }
+  stage_slot* s = &g_slots[type].slots[g_slots[type].num_slots++];
+  s->insertion_order = g_slots[type].num_slots;
+  s->priority = priority;
+  s->fn = stage;
+  s->arg = stage_arg;
+}
+
+static int compare_slots(const void* a, const void* b) {
+  const stage_slot* sa = static_cast<const stage_slot*>(a);
+  const stage_slot* sb = static_cast<const stage_slot*>(b);
+
+  int c = GPR_ICMP(sa->priority, sb->priority);
+  if (c != 0) return c;
+  return GPR_ICMP(sa->insertion_order, sb->insertion_order);
+}
+
+void grpc_channel_init_finalize(void) {
+  GPR_ASSERT(!g_finalized);
+  for (int i = 0; i < GRPC_NUM_CHANNEL_STACK_TYPES; i++) {
+    qsort(g_slots[i].slots, g_slots[i].num_slots, sizeof(*g_slots[i].slots),
+          compare_slots);
+  }
+  g_finalized = true;
+}
+
+void grpc_channel_init_shutdown(void) {
+  for (int i = 0; i < GRPC_NUM_CHANNEL_STACK_TYPES; i++) {
+    gpr_free(g_slots[i].slots);
+    g_slots[i].slots =
+        static_cast<stage_slot*>((void*)static_cast<uintptr_t>(0xdeadbeef));
+  }
+}
+
+bool grpc_channel_init_create_stack(grpc_channel_stack_builder* builder,
+                                    grpc_channel_stack_type type) {
+  GPR_ASSERT(g_finalized);
+
+  grpc_channel_stack_builder_set_name(builder,
+                                      grpc_channel_stack_type_string(type));
+
+  for (size_t i = 0; i < g_slots[type].num_slots; i++) {
+    const stage_slot* slot = &g_slots[type].slots[i];
+    if (!slot->fn(builder, slot->arg)) {
+      return false;
+    }
+  }
+
+  return true;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.h
new file mode 100644
index 0000000..d17a721
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_init.h	
@@ -0,0 +1,78 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/transport/transport.h"
+
+#define GRPC_CHANNEL_INIT_BUILTIN_PRIORITY 10000
+
+/// This module provides a way for plugins (and the grpc core library itself)
+/// to register mutators for channel stacks.
+/// It also provides a universal entry path to run those mutators to build
+/// a channel stack for various subsystems.
+
+/// One stage of mutation: call functions against \a builder to influence the
+/// finally constructed channel stack
+typedef bool (*grpc_channel_init_stage)(grpc_channel_stack_builder* builder,
+                                        void* arg);
+
+/// Global initialization of the system
+void grpc_channel_init_init(void);
+
+/// Register one stage of mutators.
+/// Stages are run in priority order (lowest to highest), and then in
+/// registration order (in the case of a tie).
+/// Stages are registered against one of the pre-determined channel stack
+/// types.
+/// If the channel stack type is GRPC_CLIENT_SUBCHANNEL, the caller should
+/// ensure that subchannels with different filter lists will always have
+/// different channel args. This requires setting a channel arg in case the
+/// registration function relies on some condition other than channel args to
+/// decide whether to add a filter or not.
+void grpc_channel_init_register_stage(grpc_channel_stack_type type,
+                                      int priority,
+                                      grpc_channel_init_stage stage_fn,
+                                      void* stage_arg);
+
+/// Finalize registration. No more calls to grpc_channel_init_register_stage are
+/// allowed.
+void grpc_channel_init_finalize(void);
+/// Shutdown the channel init system
+void grpc_channel_init_shutdown(void);
+
+/// Construct a channel stack of some sort: see channel_stack.h for details
+/// \a type is the type of channel stack to create
+/// \a prefix_bytes is the number of bytes before the channel stack to allocate
+/// \a args are configuration arguments for the channel stack
+/// \a initial_refs is the initial refcount to give the channel stack
+/// \a destroy and \a destroy_arg specify how to destroy the channel stack
+///    if destroy_arg is NULL, the returned value from this function will be
+///    substituted
+/// \a optional_transport is either NULL or a constructed transport object
+/// Returns a pointer to the base of the memory allocated (the actual channel
+/// stack object will be prefix_bytes past that pointer)
+bool grpc_channel_init_create_stack(grpc_channel_stack_builder* builder,
+                                    grpc_channel_stack_type type);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_ping.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_ping.cc
new file mode 100644
index 0000000..be02a05
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_ping.cc	
@@ -0,0 +1,65 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/channel.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+typedef struct {
+  grpc_closure closure;
+  void* tag;
+  grpc_completion_queue* cq;
+  grpc_cq_completion completion_storage;
+} ping_result;
+
+static void ping_destroy(void* arg, grpc_cq_completion* /*storage*/) {
+  gpr_free(arg);
+}
+
+static void ping_done(void* arg, grpc_error* error) {
+  ping_result* pr = static_cast<ping_result*>(arg);
+  grpc_cq_end_op(pr->cq, pr->tag, GRPC_ERROR_REF(error), ping_destroy, pr,
+                 &pr->completion_storage);
+}
+
+void grpc_channel_ping(grpc_channel* channel, grpc_completion_queue* cq,
+                       void* tag, void* reserved) {
+  GRPC_API_TRACE("grpc_channel_ping(channel=%p, cq=%p, tag=%p, reserved=%p)", 4,
+                 (channel, cq, tag, reserved));
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  ping_result* pr = static_cast<ping_result*>(gpr_malloc(sizeof(*pr)));
+  grpc_channel_element* top_elem =
+      grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
+  grpc_core::ExecCtx exec_ctx;
+  GPR_ASSERT(reserved == nullptr);
+  pr->tag = tag;
+  pr->cq = cq;
+  GRPC_CLOSURE_INIT(&pr->closure, ping_done, pr, grpc_schedule_on_exec_ctx);
+  op->send_ping.on_ack = &pr->closure;
+  op->bind_pollset = grpc_cq_pollset(cq);
+  GPR_ASSERT(grpc_cq_begin_op(cq, tag));
+  top_elem->filter->start_transport_op(top_elem, op);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.cc
new file mode 100644
index 0000000..fcf96dd
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.cc	
@@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/log.h>
+#include "src/core/lib/surface/channel_stack_type.h"
+
+bool grpc_channel_stack_type_is_client(grpc_channel_stack_type type) {
+  switch (type) {
+    case GRPC_CLIENT_CHANNEL:
+      return true;
+    case GRPC_CLIENT_SUBCHANNEL:
+      return true;
+    case GRPC_CLIENT_LAME_CHANNEL:
+      return true;
+    case GRPC_CLIENT_DIRECT_CHANNEL:
+      return true;
+    case GRPC_SERVER_CHANNEL:
+      return false;
+    case GRPC_NUM_CHANNEL_STACK_TYPES:
+      break;
+  }
+  GPR_UNREACHABLE_CODE(return true;);
+}
+
+const char* grpc_channel_stack_type_string(grpc_channel_stack_type type) {
+  switch (type) {
+    case GRPC_CLIENT_CHANNEL:
+      return "CLIENT_CHANNEL";
+    case GRPC_CLIENT_SUBCHANNEL:
+      return "CLIENT_SUBCHANNEL";
+    case GRPC_SERVER_CHANNEL:
+      return "SERVER_CHANNEL";
+    case GRPC_CLIENT_LAME_CHANNEL:
+      return "CLIENT_LAME_CHANNEL";
+    case GRPC_CLIENT_DIRECT_CHANNEL:
+      return "CLIENT_DIRECT_CHANNEL";
+    case GRPC_NUM_CHANNEL_STACK_TYPES:
+      break;
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.h
new file mode 100644
index 0000000..8a3c08e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/channel_stack_type.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+typedef enum {
+  // normal top-half client channel with load-balancing, connection management
+  GRPC_CLIENT_CHANNEL,
+  // bottom-half of a client channel: everything that happens post-load
+  // balancing (bound to a specific transport)
+  GRPC_CLIENT_SUBCHANNEL,
+  // a permanently broken client channel
+  GRPC_CLIENT_LAME_CHANNEL,
+  // a directly connected client channel (without load-balancing, directly talks
+  // to a transport)
+  GRPC_CLIENT_DIRECT_CHANNEL,
+  // server side channel
+  GRPC_SERVER_CHANNEL,
+  // must be last
+  GRPC_NUM_CHANNEL_STACK_TYPES
+} grpc_channel_stack_type;
+
+bool grpc_channel_stack_type_is_client(grpc_channel_stack_type type);
+
+const char* grpc_channel_stack_type_string(grpc_channel_stack_type type);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.cc
new file mode 100644
index 0000000..60cbb24
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.cc	
@@ -0,0 +1,1438 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/completion_queue.h"
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/tls.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/event_string.h"
+
+grpc_core::TraceFlag grpc_trace_operation_failures(false, "op_failure");
+grpc_core::DebugOnlyTraceFlag grpc_trace_pending_tags(false, "pending_tags");
+grpc_core::DebugOnlyTraceFlag grpc_trace_cq_refcount(false, "cq_refcount");
+
+namespace {
+
+// Specifies a cq thread local cache.
+// The first event that occurs on a thread
+// with a cq cache will go into that cache, and
+// will only be returned on the thread that initialized the cache.
+// NOTE: Only one event will ever be cached.
+GPR_TLS_DECL(g_cached_event);
+GPR_TLS_DECL(g_cached_cq);
+
+typedef struct {
+  grpc_pollset_worker** worker;
+  void* tag;
+} plucker;
+
+typedef struct {
+  bool can_get_pollset;
+  bool can_listen;
+  size_t (*size)(void);
+  void (*init)(grpc_pollset* pollset, gpr_mu** mu);
+  grpc_error* (*kick)(grpc_pollset* pollset,
+                      grpc_pollset_worker* specific_worker);
+  grpc_error* (*work)(grpc_pollset* pollset, grpc_pollset_worker** worker,
+                      grpc_millis deadline);
+  void (*shutdown)(grpc_pollset* pollset, grpc_closure* closure);
+  void (*destroy)(grpc_pollset* pollset);
+} cq_poller_vtable;
+
+typedef struct non_polling_worker {
+  gpr_cv cv;
+  bool kicked;
+  struct non_polling_worker* next;
+  struct non_polling_worker* prev;
+} non_polling_worker;
+
+typedef struct {
+  gpr_mu mu;
+  bool kicked_without_poller;
+  non_polling_worker* root;
+  grpc_closure* shutdown;
+} non_polling_poller;
+
+size_t non_polling_poller_size(void) { return sizeof(non_polling_poller); }
+
+void non_polling_poller_init(grpc_pollset* pollset, gpr_mu** mu) {
+  non_polling_poller* npp = reinterpret_cast<non_polling_poller*>(pollset);
+  gpr_mu_init(&npp->mu);
+  *mu = &npp->mu;
+}
+
+void non_polling_poller_destroy(grpc_pollset* pollset) {
+  non_polling_poller* npp = reinterpret_cast<non_polling_poller*>(pollset);
+  gpr_mu_destroy(&npp->mu);
+}
+
+grpc_error* non_polling_poller_work(grpc_pollset* pollset,
+                                    grpc_pollset_worker** worker,
+                                    grpc_millis deadline) {
+  non_polling_poller* npp = reinterpret_cast<non_polling_poller*>(pollset);
+  if (npp->shutdown) return GRPC_ERROR_NONE;
+  if (npp->kicked_without_poller) {
+    npp->kicked_without_poller = false;
+    return GRPC_ERROR_NONE;
+  }
+  non_polling_worker w;
+  gpr_cv_init(&w.cv);
+  if (worker != nullptr) *worker = reinterpret_cast<grpc_pollset_worker*>(&w);
+  if (npp->root == nullptr) {
+    npp->root = w.next = w.prev = &w;
+  } else {
+    w.next = npp->root;
+    w.prev = w.next->prev;
+    w.next->prev = w.prev->next = &w;
+  }
+  w.kicked = false;
+  gpr_timespec deadline_ts =
+      grpc_millis_to_timespec(deadline, GPR_CLOCK_MONOTONIC);
+  while (!npp->shutdown && !w.kicked &&
+         !gpr_cv_wait(&w.cv, &npp->mu, deadline_ts))
+    ;
+  grpc_core::ExecCtx::Get()->InvalidateNow();
+  if (&w == npp->root) {
+    npp->root = w.next;
+    if (&w == npp->root) {
+      if (npp->shutdown) {
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION, npp->shutdown, GRPC_ERROR_NONE);
+      }
+      npp->root = nullptr;
+    }
+  }
+  w.next->prev = w.prev;
+  w.prev->next = w.next;
+  gpr_cv_destroy(&w.cv);
+  if (worker != nullptr) *worker = nullptr;
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* non_polling_poller_kick(grpc_pollset* pollset,
+                                    grpc_pollset_worker* specific_worker) {
+  non_polling_poller* p = reinterpret_cast<non_polling_poller*>(pollset);
+  if (specific_worker == nullptr)
+    specific_worker = reinterpret_cast<grpc_pollset_worker*>(p->root);
+  if (specific_worker != nullptr) {
+    non_polling_worker* w =
+        reinterpret_cast<non_polling_worker*>(specific_worker);
+    if (!w->kicked) {
+      w->kicked = true;
+      gpr_cv_signal(&w->cv);
+    }
+  } else {
+    p->kicked_without_poller = true;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void non_polling_poller_shutdown(grpc_pollset* pollset, grpc_closure* closure) {
+  non_polling_poller* p = reinterpret_cast<non_polling_poller*>(pollset);
+  GPR_ASSERT(closure != nullptr);
+  p->shutdown = closure;
+  if (p->root == nullptr) {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, closure, GRPC_ERROR_NONE);
+  } else {
+    non_polling_worker* w = p->root;
+    do {
+      gpr_cv_signal(&w->cv);
+      w = w->next;
+    } while (w != p->root);
+  }
+}
+
+const cq_poller_vtable g_poller_vtable_by_poller_type[] = {
+    /* GRPC_CQ_DEFAULT_POLLING */
+    {true, true, grpc_pollset_size, grpc_pollset_init, grpc_pollset_kick,
+     grpc_pollset_work, grpc_pollset_shutdown, grpc_pollset_destroy},
+    /* GRPC_CQ_NON_LISTENING */
+    {true, false, grpc_pollset_size, grpc_pollset_init, grpc_pollset_kick,
+     grpc_pollset_work, grpc_pollset_shutdown, grpc_pollset_destroy},
+    /* GRPC_CQ_NON_POLLING */
+    {false, false, non_polling_poller_size, non_polling_poller_init,
+     non_polling_poller_kick, non_polling_poller_work,
+     non_polling_poller_shutdown, non_polling_poller_destroy},
+};
+
+}  // namespace
+
+struct cq_vtable {
+  grpc_cq_completion_type cq_completion_type;
+  size_t data_size;
+  void (*init)(void* data,
+               grpc_experimental_completion_queue_functor* shutdown_callback);
+  void (*shutdown)(grpc_completion_queue* cq);
+  void (*destroy)(void* data);
+  bool (*begin_op)(grpc_completion_queue* cq, void* tag);
+  void (*end_op)(grpc_completion_queue* cq, void* tag, grpc_error* error,
+                 void (*done)(void* done_arg, grpc_cq_completion* storage),
+                 void* done_arg, grpc_cq_completion* storage, bool internal);
+  grpc_event (*next)(grpc_completion_queue* cq, gpr_timespec deadline,
+                     void* reserved);
+  grpc_event (*pluck)(grpc_completion_queue* cq, void* tag,
+                      gpr_timespec deadline, void* reserved);
+};
+
+namespace {
+
+/* Queue that holds the cq_completion_events. Internally uses
+ * MultiProducerSingleConsumerQueue (a lockfree multiproducer single consumer
+ * queue). It uses a queue_lock to support multiple consumers.
+ * Only used in completion queues whose completion_type is GRPC_CQ_NEXT */
+class CqEventQueue {
+ public:
+  CqEventQueue() = default;
+  ~CqEventQueue() = default;
+
+  /* Note: The counter is not incremented/decremented atomically with push/pop.
+   * The count is only eventually consistent */
+  intptr_t num_items() const {
+    return num_queue_items_.Load(grpc_core::MemoryOrder::RELAXED);
+  }
+
+  bool Push(grpc_cq_completion* c);
+  grpc_cq_completion* Pop();
+
+ private:
+  /* Spinlock to serialize consumers i.e pop() operations */
+  gpr_spinlock queue_lock_ = GPR_SPINLOCK_INITIALIZER;
+
+  grpc_core::MultiProducerSingleConsumerQueue queue_;
+
+  /* A lazy counter of number of items in the queue. This is NOT atomically
+     incremented/decremented along with push/pop operations and hence is only
+     eventually consistent */
+  grpc_core::Atomic<intptr_t> num_queue_items_{0};
+};
+
+struct cq_next_data {
+  ~cq_next_data() {
+    GPR_ASSERT(queue.num_items() == 0);
+#ifndef NDEBUG
+    if (pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) != 0) {
+      gpr_log(GPR_ERROR, "Destroying CQ without draining it fully.");
+    }
+#endif
+  }
+
+  /** Completed events for completion-queues of type GRPC_CQ_NEXT */
+  CqEventQueue queue;
+
+  /** Counter of how many things have ever been queued on this completion queue
+      useful for avoiding locks to check the queue */
+  grpc_core::Atomic<intptr_t> things_queued_ever{0};
+
+  /** Number of outstanding events (+1 if not shut down)
+      Initial count is dropped by grpc_completion_queue_shutdown */
+  grpc_core::Atomic<intptr_t> pending_events{1};
+
+  /** 0 initially. 1 once we initiated shutdown */
+  bool shutdown_called = false;
+};
+
+struct cq_pluck_data {
+  cq_pluck_data() {
+    completed_tail = &completed_head;
+    completed_head.next = reinterpret_cast<uintptr_t>(completed_tail);
+  }
+
+  ~cq_pluck_data() {
+    GPR_ASSERT(completed_head.next ==
+               reinterpret_cast<uintptr_t>(&completed_head));
+#ifndef NDEBUG
+    if (pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) != 0) {
+      gpr_log(GPR_ERROR, "Destroying CQ without draining it fully.");
+    }
+#endif
+  }
+
+  /** Completed events for completion-queues of type GRPC_CQ_PLUCK */
+  grpc_cq_completion completed_head;
+  grpc_cq_completion* completed_tail;
+
+  /** Number of pending events (+1 if we're not shutdown).
+      Initial count is dropped by grpc_completion_queue_shutdown. */
+  grpc_core::Atomic<intptr_t> pending_events{1};
+
+  /** Counter of how many things have ever been queued on this completion queue
+      useful for avoiding locks to check the queue */
+  grpc_core::Atomic<intptr_t> things_queued_ever{0};
+
+  /** 0 initially. 1 once we completed shutting */
+  /* TODO: (sreek) This is not needed since (shutdown == 1) if and only if
+   * (pending_events == 0). So consider removing this in future and use
+   * pending_events */
+  grpc_core::Atomic<bool> shutdown{false};
+
+  /** 0 initially. 1 once we initiated shutdown */
+  bool shutdown_called = false;
+
+  int num_pluckers = 0;
+  plucker pluckers[GRPC_MAX_COMPLETION_QUEUE_PLUCKERS];
+};
+
+struct cq_callback_data {
+  cq_callback_data(
+      grpc_experimental_completion_queue_functor* shutdown_callback)
+      : shutdown_callback(shutdown_callback) {}
+
+  ~cq_callback_data() {
+#ifndef NDEBUG
+    if (pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) != 0) {
+      gpr_log(GPR_ERROR, "Destroying CQ without draining it fully.");
+    }
+#endif
+  }
+
+  /** No actual completed events queue, unlike other types */
+
+  /** Number of pending events (+1 if we're not shutdown).
+      Initial count is dropped by grpc_completion_queue_shutdown. */
+  grpc_core::Atomic<intptr_t> pending_events{1};
+
+  /** Counter of how many things have ever been queued on this completion queue
+      useful for avoiding locks to check the queue */
+  grpc_core::Atomic<intptr_t> things_queued_ever{0};
+
+  /** 0 initially. 1 once we initiated shutdown */
+  bool shutdown_called = false;
+
+  /** A callback that gets invoked when the CQ completes shutdown */
+  grpc_experimental_completion_queue_functor* shutdown_callback;
+};
+
+}  // namespace
+
+/* Completion queue structure */
+struct grpc_completion_queue {
+  /** Once owning_refs drops to zero, we will destroy the cq */
+  grpc_core::RefCount owning_refs;
+
+  gpr_mu* mu;
+
+  const cq_vtable* vtable;
+  const cq_poller_vtable* poller_vtable;
+
+#ifndef NDEBUG
+  void** outstanding_tags;
+  size_t outstanding_tag_count;
+  size_t outstanding_tag_capacity;
+#endif
+
+  grpc_closure pollset_shutdown_done;
+  int num_polls;
+};
+
+/* Forward declarations */
+static void cq_finish_shutdown_next(grpc_completion_queue* cq);
+static void cq_finish_shutdown_pluck(grpc_completion_queue* cq);
+static void cq_finish_shutdown_callback(grpc_completion_queue* cq);
+static void cq_shutdown_next(grpc_completion_queue* cq);
+static void cq_shutdown_pluck(grpc_completion_queue* cq);
+static void cq_shutdown_callback(grpc_completion_queue* cq);
+
+static bool cq_begin_op_for_next(grpc_completion_queue* cq, void* tag);
+static bool cq_begin_op_for_pluck(grpc_completion_queue* cq, void* tag);
+static bool cq_begin_op_for_callback(grpc_completion_queue* cq, void* tag);
+
+// A cq_end_op function is called when an operation on a given CQ with
+// a given tag has completed. The storage argument is a reference to the
+// space reserved for this completion as it is placed into the corresponding
+// queue. The done argument is a callback that will be invoked when it is
+// safe to free up that storage. The storage MUST NOT be freed until the
+// done callback is invoked.
+static void cq_end_op_for_next(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool internal);
+
+static void cq_end_op_for_pluck(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool internal);
+
+static void cq_end_op_for_callback(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool internal);
+
+static grpc_event cq_next(grpc_completion_queue* cq, gpr_timespec deadline,
+                          void* reserved);
+
+static grpc_event cq_pluck(grpc_completion_queue* cq, void* tag,
+                           gpr_timespec deadline, void* reserved);
+
+// Note that cq_init_next and cq_init_pluck do not use the shutdown_callback
+static void cq_init_next(
+    void* data, grpc_experimental_completion_queue_functor* shutdown_callback);
+static void cq_init_pluck(
+    void* data, grpc_experimental_completion_queue_functor* shutdown_callback);
+static void cq_init_callback(
+    void* data, grpc_experimental_completion_queue_functor* shutdown_callback);
+static void cq_destroy_next(void* data);
+static void cq_destroy_pluck(void* data);
+static void cq_destroy_callback(void* data);
+
+/* Completion queue vtables based on the completion-type */
+static const cq_vtable g_cq_vtable[] = {
+    /* GRPC_CQ_NEXT */
+    {GRPC_CQ_NEXT, sizeof(cq_next_data), cq_init_next, cq_shutdown_next,
+     cq_destroy_next, cq_begin_op_for_next, cq_end_op_for_next, cq_next,
+     nullptr},
+    /* GRPC_CQ_PLUCK */
+    {GRPC_CQ_PLUCK, sizeof(cq_pluck_data), cq_init_pluck, cq_shutdown_pluck,
+     cq_destroy_pluck, cq_begin_op_for_pluck, cq_end_op_for_pluck, nullptr,
+     cq_pluck},
+    /* GRPC_CQ_CALLBACK */
+    {GRPC_CQ_CALLBACK, sizeof(cq_callback_data), cq_init_callback,
+     cq_shutdown_callback, cq_destroy_callback, cq_begin_op_for_callback,
+     cq_end_op_for_callback, nullptr, nullptr},
+};
+
+#define DATA_FROM_CQ(cq) ((void*)(cq + 1))
+#define POLLSET_FROM_CQ(cq) \
+  ((grpc_pollset*)(cq->vtable->data_size + (char*)DATA_FROM_CQ(cq)))
+
+grpc_core::TraceFlag grpc_cq_pluck_trace(false, "queue_pluck");
+
+#define GRPC_SURFACE_TRACE_RETURNED_EVENT(cq, event)      \
+  do {                                                    \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace) &&        \
+        (GRPC_TRACE_FLAG_ENABLED(grpc_cq_pluck_trace) ||  \
+         (event)->type != GRPC_QUEUE_TIMEOUT)) {          \
+      char* _ev = grpc_event_string(event);               \
+      gpr_log(GPR_INFO, "RETURN_EVENT[%p]: %s", cq, _ev); \
+      gpr_free(_ev);                                      \
+    }                                                     \
+  } while (0)
+
+static void on_pollset_shutdown_done(void* cq, grpc_error* error);
+
+void grpc_cq_global_init() {
+  gpr_tls_init(&g_cached_event);
+  gpr_tls_init(&g_cached_cq);
+}
+
+void grpc_completion_queue_thread_local_cache_init(grpc_completion_queue* cq) {
+  if ((grpc_completion_queue*)gpr_tls_get(&g_cached_cq) == nullptr) {
+    gpr_tls_set(&g_cached_event, (intptr_t)0);
+    gpr_tls_set(&g_cached_cq, (intptr_t)cq);
+  }
+}
+
+int grpc_completion_queue_thread_local_cache_flush(grpc_completion_queue* cq,
+                                                   void** tag, int* ok) {
+  grpc_cq_completion* storage =
+      (grpc_cq_completion*)gpr_tls_get(&g_cached_event);
+  int ret = 0;
+  if (storage != nullptr &&
+      (grpc_completion_queue*)gpr_tls_get(&g_cached_cq) == cq) {
+    *tag = storage->tag;
+    grpc_core::ExecCtx exec_ctx;
+    *ok = (storage->next & static_cast<uintptr_t>(1)) == 1;
+    storage->done(storage->done_arg, storage);
+    ret = 1;
+    cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+    if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+      GRPC_CQ_INTERNAL_REF(cq, "shutting_down");
+      gpr_mu_lock(cq->mu);
+      cq_finish_shutdown_next(cq);
+      gpr_mu_unlock(cq->mu);
+      GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down");
+    }
+  }
+  gpr_tls_set(&g_cached_event, (intptr_t)0);
+  gpr_tls_set(&g_cached_cq, (intptr_t)0);
+
+  return ret;
+}
+
+bool CqEventQueue::Push(grpc_cq_completion* c) {
+  queue_.Push(
+      reinterpret_cast<grpc_core::MultiProducerSingleConsumerQueue::Node*>(c));
+  return num_queue_items_.FetchAdd(1, grpc_core::MemoryOrder::RELAXED) == 0;
+}
+
+grpc_cq_completion* CqEventQueue::Pop() {
+  grpc_cq_completion* c = nullptr;
+
+  if (gpr_spinlock_trylock(&queue_lock_)) {
+    GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_SUCCESSES();
+
+    bool is_empty = false;
+    c = reinterpret_cast<grpc_cq_completion*>(queue_.PopAndCheckEnd(&is_empty));
+    gpr_spinlock_unlock(&queue_lock_);
+
+    if (c == nullptr && !is_empty) {
+      GRPC_STATS_INC_CQ_EV_QUEUE_TRANSIENT_POP_FAILURES();
+    }
+  } else {
+    GRPC_STATS_INC_CQ_EV_QUEUE_TRYLOCK_FAILURES();
+  }
+
+  if (c) {
+    num_queue_items_.FetchSub(1, grpc_core::MemoryOrder::RELAXED);
+  }
+
+  return c;
+}
+
+grpc_completion_queue* grpc_completion_queue_create_internal(
+    grpc_cq_completion_type completion_type, grpc_cq_polling_type polling_type,
+    grpc_experimental_completion_queue_functor* shutdown_callback) {
+  GPR_TIMER_SCOPE("grpc_completion_queue_create_internal", 0);
+
+  grpc_completion_queue* cq;
+
+  GRPC_API_TRACE(
+      "grpc_completion_queue_create_internal(completion_type=%d, "
+      "polling_type=%d)",
+      2, (completion_type, polling_type));
+
+  const cq_vtable* vtable = &g_cq_vtable[completion_type];
+  const cq_poller_vtable* poller_vtable =
+      &g_poller_vtable_by_poller_type[polling_type];
+
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_STATS_INC_CQS_CREATED();
+
+  cq = static_cast<grpc_completion_queue*>(
+      gpr_zalloc(sizeof(grpc_completion_queue) + vtable->data_size +
+                 poller_vtable->size()));
+
+  cq->vtable = vtable;
+  cq->poller_vtable = poller_vtable;
+
+  /* One for destroy(), one for pollset_shutdown */
+  new (&cq->owning_refs) grpc_core::RefCount(2);
+
+  poller_vtable->init(POLLSET_FROM_CQ(cq), &cq->mu);
+  vtable->init(DATA_FROM_CQ(cq), shutdown_callback);
+
+  GRPC_CLOSURE_INIT(&cq->pollset_shutdown_done, on_pollset_shutdown_done, cq,
+                    grpc_schedule_on_exec_ctx);
+  return cq;
+}
+
+static void cq_init_next(
+    void* data,
+    grpc_experimental_completion_queue_functor* /*shutdown_callback*/) {
+  new (data) cq_next_data();
+}
+
+static void cq_destroy_next(void* data) {
+  cq_next_data* cqd = static_cast<cq_next_data*>(data);
+  cqd->~cq_next_data();
+}
+
+static void cq_init_pluck(
+    void* data,
+    grpc_experimental_completion_queue_functor* /*shutdown_callback*/) {
+  new (data) cq_pluck_data();
+}
+
+static void cq_destroy_pluck(void* data) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*>(data);
+  cqd->~cq_pluck_data();
+}
+
+static void cq_init_callback(
+    void* data, grpc_experimental_completion_queue_functor* shutdown_callback) {
+  new (data) cq_callback_data(shutdown_callback);
+}
+
+static void cq_destroy_callback(void* data) {
+  cq_callback_data* cqd = static_cast<cq_callback_data*>(data);
+  cqd->~cq_callback_data();
+}
+
+grpc_cq_completion_type grpc_get_cq_completion_type(grpc_completion_queue* cq) {
+  return cq->vtable->cq_completion_type;
+}
+
+int grpc_get_cq_poll_num(grpc_completion_queue* cq) {
+  int cur_num_polls;
+  gpr_mu_lock(cq->mu);
+  cur_num_polls = cq->num_polls;
+  gpr_mu_unlock(cq->mu);
+  return cur_num_polls;
+}
+
+#ifndef NDEBUG
+void grpc_cq_internal_ref(grpc_completion_queue* cq, const char* reason,
+                          const char* file, int line) {
+  grpc_core::DebugLocation debug_location(file, line);
+#else
+void grpc_cq_internal_ref(grpc_completion_queue* cq) {
+  grpc_core::DebugLocation debug_location;
+  const char* reason = nullptr;
+#endif
+  cq->owning_refs.Ref(debug_location, reason);
+}
+
+static void on_pollset_shutdown_done(void* arg, grpc_error* /*error*/) {
+  grpc_completion_queue* cq = static_cast<grpc_completion_queue*>(arg);
+  GRPC_CQ_INTERNAL_UNREF(cq, "pollset_destroy");
+}
+
+#ifndef NDEBUG
+void grpc_cq_internal_unref(grpc_completion_queue* cq, const char* reason,
+                            const char* file, int line) {
+  grpc_core::DebugLocation debug_location(file, line);
+#else
+void grpc_cq_internal_unref(grpc_completion_queue* cq) {
+  grpc_core::DebugLocation debug_location;
+  const char* reason = nullptr;
+#endif
+  if (GPR_UNLIKELY(cq->owning_refs.Unref(debug_location, reason))) {
+    cq->vtable->destroy(DATA_FROM_CQ(cq));
+    cq->poller_vtable->destroy(POLLSET_FROM_CQ(cq));
+#ifndef NDEBUG
+    gpr_free(cq->outstanding_tags);
+#endif
+    gpr_free(cq);
+  }
+}
+
+#ifndef NDEBUG
+static void cq_check_tag(grpc_completion_queue* cq, void* tag, bool lock_cq) {
+  int found = 0;
+  if (lock_cq) {
+    gpr_mu_lock(cq->mu);
+  }
+
+  for (int i = 0; i < static_cast<int>(cq->outstanding_tag_count); i++) {
+    if (cq->outstanding_tags[i] == tag) {
+      cq->outstanding_tag_count--;
+      GPR_SWAP(void*, cq->outstanding_tags[i],
+               cq->outstanding_tags[cq->outstanding_tag_count]);
+      found = 1;
+      break;
+    }
+  }
+
+  if (lock_cq) {
+    gpr_mu_unlock(cq->mu);
+  }
+
+  GPR_ASSERT(found);
+}
+#else
+static void cq_check_tag(grpc_completion_queue* /*cq*/, void* /*tag*/,
+                         bool /*lock_cq*/) {}
+#endif
+
+static bool cq_begin_op_for_next(grpc_completion_queue* cq, void* /*tag*/) {
+  cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+  return cqd->pending_events.IncrementIfNonzero();
+}
+
+static bool cq_begin_op_for_pluck(grpc_completion_queue* cq, void* /*tag*/) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+  return cqd->pending_events.IncrementIfNonzero();
+}
+
+static bool cq_begin_op_for_callback(grpc_completion_queue* cq, void* /*tag*/) {
+  cq_callback_data* cqd = static_cast<cq_callback_data*> DATA_FROM_CQ(cq);
+  return cqd->pending_events.IncrementIfNonzero();
+}
+
+bool grpc_cq_begin_op(grpc_completion_queue* cq, void* tag) {
+#ifndef NDEBUG
+  gpr_mu_lock(cq->mu);
+  if (cq->outstanding_tag_count == cq->outstanding_tag_capacity) {
+    cq->outstanding_tag_capacity = GPR_MAX(4, 2 * cq->outstanding_tag_capacity);
+    cq->outstanding_tags = static_cast<void**>(gpr_realloc(
+        cq->outstanding_tags,
+        sizeof(*cq->outstanding_tags) * cq->outstanding_tag_capacity));
+  }
+  cq->outstanding_tags[cq->outstanding_tag_count++] = tag;
+  gpr_mu_unlock(cq->mu);
+#endif
+  return cq->vtable->begin_op(cq, tag);
+}
+
+/* Queue a GRPC_OP_COMPLETED operation to a completion queue (with a
+ * completion
+ * type of GRPC_CQ_NEXT) */
+static void cq_end_op_for_next(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool /*internal*/) {
+  GPR_TIMER_SCOPE("cq_end_op_for_next", 0);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace) ||
+      (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+       error != GRPC_ERROR_NONE)) {
+    const char* errmsg = grpc_error_string(error);
+    GRPC_API_TRACE(
+        "cq_end_op_for_next(cq=%p, tag=%p, error=%s, "
+        "done=%p, done_arg=%p, storage=%p)",
+        6, (cq, tag, errmsg, done, done_arg, storage));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+        error != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);
+    }
+  }
+  cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+  int is_success = (error == GRPC_ERROR_NONE);
+
+  storage->tag = tag;
+  storage->done = done;
+  storage->done_arg = done_arg;
+  storage->next = static_cast<uintptr_t>(is_success);
+
+  cq_check_tag(cq, tag, true); /* Used in debug builds only */
+
+  if ((grpc_completion_queue*)gpr_tls_get(&g_cached_cq) == cq &&
+      (grpc_cq_completion*)gpr_tls_get(&g_cached_event) == nullptr) {
+    gpr_tls_set(&g_cached_event, (intptr_t)storage);
+  } else {
+    /* Add the completion to the queue */
+    bool is_first = cqd->queue.Push(storage);
+    cqd->things_queued_ever.FetchAdd(1, grpc_core::MemoryOrder::RELAXED);
+    /* Since we do not hold the cq lock here, it is important to do an 'acquire'
+       load here (instead of a 'no_barrier' load) to match with the release
+       store
+       (done via pending_events.FetchSub(1, ACQ_REL)) in cq_shutdown_next
+       */
+    if (cqd->pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) != 1) {
+      /* Only kick if this is the first item queued */
+      if (is_first) {
+        gpr_mu_lock(cq->mu);
+        grpc_error* kick_error =
+            cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), nullptr);
+        gpr_mu_unlock(cq->mu);
+
+        if (kick_error != GRPC_ERROR_NONE) {
+          const char* msg = grpc_error_string(kick_error);
+          gpr_log(GPR_ERROR, "Kick failed: %s", msg);
+          GRPC_ERROR_UNREF(kick_error);
+        }
+      }
+      if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) ==
+          1) {
+        GRPC_CQ_INTERNAL_REF(cq, "shutting_down");
+        gpr_mu_lock(cq->mu);
+        cq_finish_shutdown_next(cq);
+        gpr_mu_unlock(cq->mu);
+        GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down");
+      }
+    } else {
+      GRPC_CQ_INTERNAL_REF(cq, "shutting_down");
+      cqd->pending_events.Store(0, grpc_core::MemoryOrder::RELEASE);
+      gpr_mu_lock(cq->mu);
+      cq_finish_shutdown_next(cq);
+      gpr_mu_unlock(cq->mu);
+      GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down");
+    }
+  }
+
+  GRPC_ERROR_UNREF(error);
+}
+
+/* Queue a GRPC_OP_COMPLETED operation to a completion queue (with a
+ * completion
+ * type of GRPC_CQ_PLUCK) */
+static void cq_end_op_for_pluck(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool /*internal*/) {
+  GPR_TIMER_SCOPE("cq_end_op_for_pluck", 0);
+
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+  int is_success = (error == GRPC_ERROR_NONE);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace) ||
+      (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+       error != GRPC_ERROR_NONE)) {
+    const char* errmsg = grpc_error_string(error);
+    GRPC_API_TRACE(
+        "cq_end_op_for_pluck(cq=%p, tag=%p, error=%s, "
+        "done=%p, done_arg=%p, storage=%p)",
+        6, (cq, tag, errmsg, done, done_arg, storage));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+        error != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);
+    }
+  }
+
+  storage->tag = tag;
+  storage->done = done;
+  storage->done_arg = done_arg;
+  storage->next =
+      ((uintptr_t)&cqd->completed_head) | (static_cast<uintptr_t>(is_success));
+
+  gpr_mu_lock(cq->mu);
+  cq_check_tag(cq, tag, false); /* Used in debug builds only */
+
+  /* Add to the list of completions */
+  cqd->things_queued_ever.FetchAdd(1, grpc_core::MemoryOrder::RELAXED);
+  cqd->completed_tail->next =
+      ((uintptr_t)storage) | (1u & cqd->completed_tail->next);
+  cqd->completed_tail = storage;
+
+  if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    cq_finish_shutdown_pluck(cq);
+    gpr_mu_unlock(cq->mu);
+  } else {
+    grpc_pollset_worker* pluck_worker = nullptr;
+    for (int i = 0; i < cqd->num_pluckers; i++) {
+      if (cqd->pluckers[i].tag == tag) {
+        pluck_worker = *cqd->pluckers[i].worker;
+        break;
+      }
+    }
+
+    grpc_error* kick_error =
+        cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), pluck_worker);
+
+    gpr_mu_unlock(cq->mu);
+
+    if (kick_error != GRPC_ERROR_NONE) {
+      const char* msg = grpc_error_string(kick_error);
+      gpr_log(GPR_ERROR, "Kick failed: %s", msg);
+
+      GRPC_ERROR_UNREF(kick_error);
+    }
+  }
+
+  GRPC_ERROR_UNREF(error);
+}
+
+static void functor_callback(void* arg, grpc_error* error) {
+  auto* functor = static_cast<grpc_experimental_completion_queue_functor*>(arg);
+  functor->functor_run(functor, error == GRPC_ERROR_NONE);
+}
+
+/* Complete an event on a completion queue of type GRPC_CQ_CALLBACK */
+static void cq_end_op_for_callback(
+    grpc_completion_queue* cq, void* tag, grpc_error* error,
+    void (*done)(void* done_arg, grpc_cq_completion* storage), void* done_arg,
+    grpc_cq_completion* storage, bool internal) {
+  GPR_TIMER_SCOPE("cq_end_op_for_callback", 0);
+
+  cq_callback_data* cqd = static_cast<cq_callback_data*> DATA_FROM_CQ(cq);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_api_trace) ||
+      (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+       error != GRPC_ERROR_NONE)) {
+    const char* errmsg = grpc_error_string(error);
+    GRPC_API_TRACE(
+        "cq_end_op_for_callback(cq=%p, tag=%p, error=%s, "
+        "done=%p, done_arg=%p, storage=%p)",
+        6, (cq, tag, errmsg, done, done_arg, storage));
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_operation_failures) &&
+        error != GRPC_ERROR_NONE) {
+      gpr_log(GPR_ERROR, "Operation failed: tag=%p, error=%s", tag, errmsg);
+    }
+  }
+
+  // The callback-based CQ isn't really a queue at all and thus has no need
+  // for reserved storage. Invoke the done callback right away to release it.
+  done(done_arg, storage);
+
+  cq_check_tag(cq, tag, true); /* Used in debug builds only */
+
+  cqd->things_queued_ever.FetchAdd(1, grpc_core::MemoryOrder::RELAXED);
+  if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    cq_finish_shutdown_callback(cq);
+  }
+
+  auto* functor = static_cast<grpc_experimental_completion_queue_functor*>(tag);
+  if (internal || functor->inlineable ||
+      grpc_iomgr_is_any_background_poller_thread()) {
+    grpc_core::ApplicationCallbackExecCtx::Enqueue(functor,
+                                                   (error == GRPC_ERROR_NONE));
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+
+  // Schedule the callback on a closure if not internal or triggered
+  // from a background poller thread.
+  grpc_core::Executor::Run(
+      GRPC_CLOSURE_CREATE(functor_callback, functor, nullptr), error);
+}
+
+void grpc_cq_end_op(grpc_completion_queue* cq, void* tag, grpc_error* error,
+                    void (*done)(void* done_arg, grpc_cq_completion* storage),
+                    void* done_arg, grpc_cq_completion* storage,
+                    bool internal) {
+  cq->vtable->end_op(cq, tag, error, done, done_arg, storage, internal);
+}
+
+typedef struct {
+  gpr_atm last_seen_things_queued_ever;
+  grpc_completion_queue* cq;
+  grpc_millis deadline;
+  grpc_cq_completion* stolen_completion;
+  void* tag; /* for pluck */
+  bool first_loop;
+} cq_is_finished_arg;
+
+class ExecCtxNext : public grpc_core::ExecCtx {
+ public:
+  ExecCtxNext(void* arg) : ExecCtx(0), check_ready_to_finish_arg_(arg) {}
+
+  bool CheckReadyToFinish() override {
+    cq_is_finished_arg* a =
+        static_cast<cq_is_finished_arg*>(check_ready_to_finish_arg_);
+    grpc_completion_queue* cq = a->cq;
+    cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+    GPR_ASSERT(a->stolen_completion == nullptr);
+
+    intptr_t current_last_seen_things_queued_ever =
+        cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED);
+
+    if (current_last_seen_things_queued_ever !=
+        a->last_seen_things_queued_ever) {
+      a->last_seen_things_queued_ever =
+          cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED);
+
+      /* Pop a cq_completion from the queue. Returns NULL if the queue is empty
+       * might return NULL in some cases even if the queue is not empty; but
+       * that
+       * is ok and doesn't affect correctness. Might effect the tail latencies a
+       * bit) */
+      a->stolen_completion = cqd->queue.Pop();
+      if (a->stolen_completion != nullptr) {
+        return true;
+      }
+    }
+    return !a->first_loop && a->deadline < grpc_core::ExecCtx::Get()->Now();
+  }
+
+ private:
+  void* check_ready_to_finish_arg_;
+};
+
+#ifndef NDEBUG
+static void dump_pending_tags(grpc_completion_queue* cq) {
+  if (!GRPC_TRACE_FLAG_ENABLED(grpc_trace_pending_tags)) return;
+
+  gpr_strvec v;
+  gpr_strvec_init(&v);
+  gpr_strvec_add(&v, gpr_strdup("PENDING TAGS:"));
+  gpr_mu_lock(cq->mu);
+  for (size_t i = 0; i < cq->outstanding_tag_count; i++) {
+    char* s;
+    gpr_asprintf(&s, " %p", cq->outstanding_tags[i]);
+    gpr_strvec_add(&v, s);
+  }
+  gpr_mu_unlock(cq->mu);
+  char* out = gpr_strvec_flatten(&v, nullptr);
+  gpr_strvec_destroy(&v);
+  gpr_log(GPR_DEBUG, "%s", out);
+  gpr_free(out);
+}
+#else
+static void dump_pending_tags(grpc_completion_queue* /*cq*/) {}
+#endif
+
+static grpc_event cq_next(grpc_completion_queue* cq, gpr_timespec deadline,
+                          void* reserved) {
+  GPR_TIMER_SCOPE("grpc_completion_queue_next", 0);
+
+  grpc_event ret;
+  cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+
+  GRPC_API_TRACE(
+      "grpc_completion_queue_next("
+      "cq=%p, "
+      "deadline=gpr_timespec { tv_sec: %" PRId64
+      ", tv_nsec: %d, clock_type: %d }, "
+      "reserved=%p)",
+      5,
+      (cq, deadline.tv_sec, deadline.tv_nsec, (int)deadline.clock_type,
+       reserved));
+  GPR_ASSERT(!reserved);
+
+  dump_pending_tags(cq);
+
+  GRPC_CQ_INTERNAL_REF(cq, "next");
+
+  grpc_millis deadline_millis = grpc_timespec_to_millis_round_up(deadline);
+  cq_is_finished_arg is_finished_arg = {
+      cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED),
+      cq,
+      deadline_millis,
+      nullptr,
+      nullptr,
+      true};
+  ExecCtxNext exec_ctx(&is_finished_arg);
+  for (;;) {
+    grpc_millis iteration_deadline = deadline_millis;
+
+    if (is_finished_arg.stolen_completion != nullptr) {
+      grpc_cq_completion* c = is_finished_arg.stolen_completion;
+      is_finished_arg.stolen_completion = nullptr;
+      ret.type = GRPC_OP_COMPLETE;
+      ret.success = c->next & 1u;
+      ret.tag = c->tag;
+      c->done(c->done_arg, c);
+      break;
+    }
+
+    grpc_cq_completion* c = cqd->queue.Pop();
+
+    if (c != nullptr) {
+      ret.type = GRPC_OP_COMPLETE;
+      ret.success = c->next & 1u;
+      ret.tag = c->tag;
+      c->done(c->done_arg, c);
+      break;
+    } else {
+      /* If c == NULL it means either the queue is empty OR in an transient
+         inconsistent state. If it is the latter, we shold do a 0-timeout poll
+         so that the thread comes back quickly from poll to make a second
+         attempt at popping. Not doing this can potentially deadlock this
+         thread forever (if the deadline is infinity) */
+      if (cqd->queue.num_items() > 0) {
+        iteration_deadline = 0;
+      }
+    }
+
+    if (cqd->pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) == 0) {
+      /* Before returning, check if the queue has any items left over (since
+         MultiProducerSingleConsumerQueue::Pop() can sometimes return NULL
+         even if the queue is not empty. If so, keep retrying but do not
+         return GRPC_QUEUE_SHUTDOWN */
+      if (cqd->queue.num_items() > 0) {
+        /* Go to the beginning of the loop. No point doing a poll because
+           (cq->shutdown == true) is only possible when there is no pending
+           work (i.e cq->pending_events == 0) and any outstanding completion
+           events should have already been queued on this cq */
+        continue;
+      }
+
+      ret.type = GRPC_QUEUE_SHUTDOWN;
+      ret.success = 0;
+      break;
+    }
+
+    if (!is_finished_arg.first_loop &&
+        grpc_core::ExecCtx::Get()->Now() >= deadline_millis) {
+      ret.type = GRPC_QUEUE_TIMEOUT;
+      ret.success = 0;
+      dump_pending_tags(cq);
+      break;
+    }
+
+    /* The main polling work happens in grpc_pollset_work */
+    gpr_mu_lock(cq->mu);
+    cq->num_polls++;
+    grpc_error* err = cq->poller_vtable->work(POLLSET_FROM_CQ(cq), nullptr,
+                                              iteration_deadline);
+    gpr_mu_unlock(cq->mu);
+
+    if (err != GRPC_ERROR_NONE) {
+      const char* msg = grpc_error_string(err);
+      gpr_log(GPR_ERROR, "Completion queue next failed: %s", msg);
+
+      GRPC_ERROR_UNREF(err);
+      ret.type = GRPC_QUEUE_TIMEOUT;
+      ret.success = 0;
+      dump_pending_tags(cq);
+      break;
+    }
+    is_finished_arg.first_loop = false;
+  }
+
+  if (cqd->queue.num_items() > 0 &&
+      cqd->pending_events.Load(grpc_core::MemoryOrder::ACQUIRE) > 0) {
+    gpr_mu_lock(cq->mu);
+    cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), nullptr);
+    gpr_mu_unlock(cq->mu);
+  }
+
+  GRPC_SURFACE_TRACE_RETURNED_EVENT(cq, &ret);
+  GRPC_CQ_INTERNAL_UNREF(cq, "next");
+
+  GPR_ASSERT(is_finished_arg.stolen_completion == nullptr);
+
+  return ret;
+}
+
+/* Finishes the completion queue shutdown. This means that there are no more
+   completion events / tags expected from the completion queue
+   - Must be called under completion queue lock
+   - Must be called only once in completion queue's lifetime
+   - grpc_completion_queue_shutdown() MUST have been called before calling
+   this function */
+static void cq_finish_shutdown_next(grpc_completion_queue* cq) {
+  cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+
+  GPR_ASSERT(cqd->shutdown_called);
+  GPR_ASSERT(cqd->pending_events.Load(grpc_core::MemoryOrder::RELAXED) == 0);
+
+  cq->poller_vtable->shutdown(POLLSET_FROM_CQ(cq), &cq->pollset_shutdown_done);
+}
+
+static void cq_shutdown_next(grpc_completion_queue* cq) {
+  cq_next_data* cqd = static_cast<cq_next_data*> DATA_FROM_CQ(cq);
+
+  /* Need an extra ref for cq here because:
+   * We call cq_finish_shutdown_next() below, that would call pollset shutdown.
+   * Pollset shutdown decrements the cq ref count which can potentially destroy
+   * the cq (if that happens to be the last ref).
+   * Creating an extra ref here prevents the cq from getting destroyed while
+   * this function is still active */
+  GRPC_CQ_INTERNAL_REF(cq, "shutting_down");
+  gpr_mu_lock(cq->mu);
+  if (cqd->shutdown_called) {
+    gpr_mu_unlock(cq->mu);
+    GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down");
+    return;
+  }
+  cqd->shutdown_called = true;
+  /* Doing acq/release FetchSub here to match with
+   * cq_begin_op_for_next and cq_end_op_for_next functions which read/write
+   * on this counter without necessarily holding a lock on cq */
+  if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    cq_finish_shutdown_next(cq);
+  }
+  gpr_mu_unlock(cq->mu);
+  GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down");
+}
+
+grpc_event grpc_completion_queue_next(grpc_completion_queue* cq,
+                                      gpr_timespec deadline, void* reserved) {
+  return cq->vtable->next(cq, deadline, reserved);
+}
+
+static int add_plucker(grpc_completion_queue* cq, void* tag,
+                       grpc_pollset_worker** worker) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+  if (cqd->num_pluckers == GRPC_MAX_COMPLETION_QUEUE_PLUCKERS) {
+    return 0;
+  }
+  cqd->pluckers[cqd->num_pluckers].tag = tag;
+  cqd->pluckers[cqd->num_pluckers].worker = worker;
+  cqd->num_pluckers++;
+  return 1;
+}
+
+static void del_plucker(grpc_completion_queue* cq, void* tag,
+                        grpc_pollset_worker** worker) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+  for (int i = 0; i < cqd->num_pluckers; i++) {
+    if (cqd->pluckers[i].tag == tag && cqd->pluckers[i].worker == worker) {
+      cqd->num_pluckers--;
+      GPR_SWAP(plucker, cqd->pluckers[i], cqd->pluckers[cqd->num_pluckers]);
+      return;
+    }
+  }
+  GPR_UNREACHABLE_CODE(return );
+}
+
+class ExecCtxPluck : public grpc_core::ExecCtx {
+ public:
+  ExecCtxPluck(void* arg) : ExecCtx(0), check_ready_to_finish_arg_(arg) {}
+
+  bool CheckReadyToFinish() override {
+    cq_is_finished_arg* a =
+        static_cast<cq_is_finished_arg*>(check_ready_to_finish_arg_);
+    grpc_completion_queue* cq = a->cq;
+    cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+
+    GPR_ASSERT(a->stolen_completion == nullptr);
+    gpr_atm current_last_seen_things_queued_ever =
+        cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED);
+    if (current_last_seen_things_queued_ever !=
+        a->last_seen_things_queued_ever) {
+      gpr_mu_lock(cq->mu);
+      a->last_seen_things_queued_ever =
+          cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED);
+      grpc_cq_completion* c;
+      grpc_cq_completion* prev = &cqd->completed_head;
+      while ((c = (grpc_cq_completion*)(prev->next &
+                                        ~static_cast<uintptr_t>(1))) !=
+             &cqd->completed_head) {
+        if (c->tag == a->tag) {
+          prev->next = (prev->next & static_cast<uintptr_t>(1)) |
+                       (c->next & ~static_cast<uintptr_t>(1));
+          if (c == cqd->completed_tail) {
+            cqd->completed_tail = prev;
+          }
+          gpr_mu_unlock(cq->mu);
+          a->stolen_completion = c;
+          return true;
+        }
+        prev = c;
+      }
+      gpr_mu_unlock(cq->mu);
+    }
+    return !a->first_loop && a->deadline < grpc_core::ExecCtx::Get()->Now();
+  }
+
+ private:
+  void* check_ready_to_finish_arg_;
+};
+
+static grpc_event cq_pluck(grpc_completion_queue* cq, void* tag,
+                           gpr_timespec deadline, void* reserved) {
+  GPR_TIMER_SCOPE("grpc_completion_queue_pluck", 0);
+
+  grpc_event ret;
+  grpc_cq_completion* c;
+  grpc_cq_completion* prev;
+  grpc_pollset_worker* worker = nullptr;
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_cq_pluck_trace)) {
+    GRPC_API_TRACE(
+        "grpc_completion_queue_pluck("
+        "cq=%p, tag=%p, "
+        "deadline=gpr_timespec { tv_sec: %" PRId64
+        ", tv_nsec: %d, clock_type: %d }, "
+        "reserved=%p)",
+        6,
+        (cq, tag, deadline.tv_sec, deadline.tv_nsec, (int)deadline.clock_type,
+         reserved));
+  }
+  GPR_ASSERT(!reserved);
+
+  dump_pending_tags(cq);
+
+  GRPC_CQ_INTERNAL_REF(cq, "pluck");
+  gpr_mu_lock(cq->mu);
+  grpc_millis deadline_millis = grpc_timespec_to_millis_round_up(deadline);
+  cq_is_finished_arg is_finished_arg = {
+      cqd->things_queued_ever.Load(grpc_core::MemoryOrder::RELAXED),
+      cq,
+      deadline_millis,
+      nullptr,
+      tag,
+      true};
+  ExecCtxPluck exec_ctx(&is_finished_arg);
+  for (;;) {
+    if (is_finished_arg.stolen_completion != nullptr) {
+      gpr_mu_unlock(cq->mu);
+      c = is_finished_arg.stolen_completion;
+      is_finished_arg.stolen_completion = nullptr;
+      ret.type = GRPC_OP_COMPLETE;
+      ret.success = c->next & 1u;
+      ret.tag = c->tag;
+      c->done(c->done_arg, c);
+      break;
+    }
+    prev = &cqd->completed_head;
+    while (
+        (c = (grpc_cq_completion*)(prev->next & ~static_cast<uintptr_t>(1))) !=
+        &cqd->completed_head) {
+      if (c->tag == tag) {
+        prev->next = (prev->next & static_cast<uintptr_t>(1)) |
+                     (c->next & ~static_cast<uintptr_t>(1));
+        if (c == cqd->completed_tail) {
+          cqd->completed_tail = prev;
+        }
+        gpr_mu_unlock(cq->mu);
+        ret.type = GRPC_OP_COMPLETE;
+        ret.success = c->next & 1u;
+        ret.tag = c->tag;
+        c->done(c->done_arg, c);
+        goto done;
+      }
+      prev = c;
+    }
+    if (cqd->shutdown.Load(grpc_core::MemoryOrder::RELAXED)) {
+      gpr_mu_unlock(cq->mu);
+      ret.type = GRPC_QUEUE_SHUTDOWN;
+      ret.success = 0;
+      break;
+    }
+    if (!add_plucker(cq, tag, &worker)) {
+      gpr_log(GPR_DEBUG,
+              "Too many outstanding grpc_completion_queue_pluck calls: maximum "
+              "is %d",
+              GRPC_MAX_COMPLETION_QUEUE_PLUCKERS);
+      gpr_mu_unlock(cq->mu);
+      /* TODO(ctiller): should we use a different result here */
+      ret.type = GRPC_QUEUE_TIMEOUT;
+      ret.success = 0;
+      dump_pending_tags(cq);
+      break;
+    }
+    if (!is_finished_arg.first_loop &&
+        grpc_core::ExecCtx::Get()->Now() >= deadline_millis) {
+      del_plucker(cq, tag, &worker);
+      gpr_mu_unlock(cq->mu);
+      ret.type = GRPC_QUEUE_TIMEOUT;
+      ret.success = 0;
+      dump_pending_tags(cq);
+      break;
+    }
+    cq->num_polls++;
+    grpc_error* err =
+        cq->poller_vtable->work(POLLSET_FROM_CQ(cq), &worker, deadline_millis);
+    if (err != GRPC_ERROR_NONE) {
+      del_plucker(cq, tag, &worker);
+      gpr_mu_unlock(cq->mu);
+      const char* msg = grpc_error_string(err);
+      gpr_log(GPR_ERROR, "Completion queue pluck failed: %s", msg);
+
+      GRPC_ERROR_UNREF(err);
+      ret.type = GRPC_QUEUE_TIMEOUT;
+      ret.success = 0;
+      dump_pending_tags(cq);
+      break;
+    }
+    is_finished_arg.first_loop = false;
+    del_plucker(cq, tag, &worker);
+  }
+done:
+  GRPC_SURFACE_TRACE_RETURNED_EVENT(cq, &ret);
+  GRPC_CQ_INTERNAL_UNREF(cq, "pluck");
+
+  GPR_ASSERT(is_finished_arg.stolen_completion == nullptr);
+
+  return ret;
+}
+
+grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq, void* tag,
+                                       gpr_timespec deadline, void* reserved) {
+  return cq->vtable->pluck(cq, tag, deadline, reserved);
+}
+
+static void cq_finish_shutdown_pluck(grpc_completion_queue* cq) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+
+  GPR_ASSERT(cqd->shutdown_called);
+  GPR_ASSERT(!cqd->shutdown.Load(grpc_core::MemoryOrder::RELAXED));
+  cqd->shutdown.Store(1, grpc_core::MemoryOrder::RELAXED);
+
+  cq->poller_vtable->shutdown(POLLSET_FROM_CQ(cq), &cq->pollset_shutdown_done);
+}
+
+/* NOTE: This function is almost exactly identical to cq_shutdown_next() but
+ * merging them is a bit tricky and probably not worth it */
+static void cq_shutdown_pluck(grpc_completion_queue* cq) {
+  cq_pluck_data* cqd = static_cast<cq_pluck_data*> DATA_FROM_CQ(cq);
+
+  /* Need an extra ref for cq here because:
+   * We call cq_finish_shutdown_pluck() below, that would call pollset shutdown.
+   * Pollset shutdown decrements the cq ref count which can potentially destroy
+   * the cq (if that happens to be the last ref).
+   * Creating an extra ref here prevents the cq from getting destroyed while
+   * this function is still active */
+  GRPC_CQ_INTERNAL_REF(cq, "shutting_down (pluck cq)");
+  gpr_mu_lock(cq->mu);
+  if (cqd->shutdown_called) {
+    gpr_mu_unlock(cq->mu);
+    GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down (pluck cq)");
+    return;
+  }
+  cqd->shutdown_called = true;
+  if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    cq_finish_shutdown_pluck(cq);
+  }
+  gpr_mu_unlock(cq->mu);
+  GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down (pluck cq)");
+}
+
+static void cq_finish_shutdown_callback(grpc_completion_queue* cq) {
+  cq_callback_data* cqd = static_cast<cq_callback_data*> DATA_FROM_CQ(cq);
+  auto* callback = cqd->shutdown_callback;
+
+  GPR_ASSERT(cqd->shutdown_called);
+
+  cq->poller_vtable->shutdown(POLLSET_FROM_CQ(cq), &cq->pollset_shutdown_done);
+  if (grpc_iomgr_is_any_background_poller_thread()) {
+    grpc_core::ApplicationCallbackExecCtx::Enqueue(callback, true);
+    return;
+  }
+
+  // Schedule the callback on a closure if not internal or triggered
+  // from a background poller thread.
+  grpc_core::Executor::Run(
+      GRPC_CLOSURE_CREATE(functor_callback, callback, nullptr),
+      GRPC_ERROR_NONE);
+}
+
+static void cq_shutdown_callback(grpc_completion_queue* cq) {
+  cq_callback_data* cqd = static_cast<cq_callback_data*> DATA_FROM_CQ(cq);
+
+  /* Need an extra ref for cq here because:
+   * We call cq_finish_shutdown_callback() below, which calls pollset shutdown.
+   * Pollset shutdown decrements the cq ref count which can potentially destroy
+   * the cq (if that happens to be the last ref).
+   * Creating an extra ref here prevents the cq from getting destroyed while
+   * this function is still active */
+  GRPC_CQ_INTERNAL_REF(cq, "shutting_down (callback cq)");
+  gpr_mu_lock(cq->mu);
+  if (cqd->shutdown_called) {
+    gpr_mu_unlock(cq->mu);
+    GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down (callback cq)");
+    return;
+  }
+  cqd->shutdown_called = true;
+  if (cqd->pending_events.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) {
+    gpr_mu_unlock(cq->mu);
+    cq_finish_shutdown_callback(cq);
+  } else {
+    gpr_mu_unlock(cq->mu);
+  }
+  GRPC_CQ_INTERNAL_UNREF(cq, "shutting_down (callback cq)");
+}
+
+/* Shutdown simply drops a ref that we reserved at creation time; if we drop
+   to zero here, then enter shutdown mode and wake up any waiters */
+void grpc_completion_queue_shutdown(grpc_completion_queue* cq) {
+  GPR_TIMER_SCOPE("grpc_completion_queue_shutdown", 0);
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE("grpc_completion_queue_shutdown(cq=%p)", 1, (cq));
+  cq->vtable->shutdown(cq);
+}
+
+void grpc_completion_queue_destroy(grpc_completion_queue* cq) {
+  GPR_TIMER_SCOPE("grpc_completion_queue_destroy", 0);
+  GRPC_API_TRACE("grpc_completion_queue_destroy(cq=%p)", 1, (cq));
+  grpc_completion_queue_shutdown(cq);
+
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_CQ_INTERNAL_UNREF(cq, "destroy");
+}
+
+grpc_pollset* grpc_cq_pollset(grpc_completion_queue* cq) {
+  return cq->poller_vtable->can_get_pollset ? POLLSET_FROM_CQ(cq) : nullptr;
+}
+
+bool grpc_cq_can_listen(grpc_completion_queue* cq) {
+  return cq->poller_vtable->can_listen;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.h
new file mode 100644
index 0000000..4a114be
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue.h	
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+
+/* Internal API for completion queues */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/manual_constructor.h"
+#include "src/core/lib/iomgr/pollset.h"
+
+/* These trace flags default to 1. The corresponding lines are only traced
+   if grpc_api_trace is also truthy */
+extern grpc_core::TraceFlag grpc_cq_pluck_trace;
+extern grpc_core::TraceFlag grpc_trace_operation_failures;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_pending_tags;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_cq_refcount;
+
+typedef struct grpc_cq_completion {
+  grpc_core::ManualConstructor<grpc_core::MultiProducerSingleConsumerQueue>
+      node;
+
+  /** user supplied tag */
+  void* tag;
+  /** done callback - called when this queue element is no longer
+      needed by the completion queue */
+  void (*done)(void* done_arg, struct grpc_cq_completion* c);
+  void* done_arg;
+  /** next pointer; low bit is used to indicate success or not */
+  uintptr_t next;
+} grpc_cq_completion;
+
+#ifndef NDEBUG
+void grpc_cq_internal_ref(grpc_completion_queue* cc, const char* reason,
+                          const char* file, int line);
+void grpc_cq_internal_unref(grpc_completion_queue* cc, const char* reason,
+                            const char* file, int line);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) \
+  grpc_cq_internal_ref(cc, reason, __FILE__, __LINE__)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) \
+  grpc_cq_internal_unref(cc, reason, __FILE__, __LINE__)
+#else
+void grpc_cq_internal_ref(grpc_completion_queue* cc);
+void grpc_cq_internal_unref(grpc_completion_queue* cc);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc)
+#endif
+
+/* Initializes global variables used by completion queues */
+void grpc_cq_global_init();
+
+/* Flag that an operation is beginning: the completion channel will not finish
+   shutdown until a corrensponding grpc_cq_end_* call is made.
+   \a tag is currently used only in debug builds. Return true on success, and
+   false if completion_queue has been shutdown. */
+bool grpc_cq_begin_op(grpc_completion_queue* cc, void* tag);
+
+/* Queue a GRPC_OP_COMPLETED operation; tag must correspond to the tag passed to
+   grpc_cq_begin_op */
+void grpc_cq_end_op(grpc_completion_queue* cc, void* tag, grpc_error* error,
+                    void (*done)(void* done_arg, grpc_cq_completion* storage),
+                    void* done_arg, grpc_cq_completion* storage,
+                    bool internal = false);
+
+grpc_pollset* grpc_cq_pollset(grpc_completion_queue* cc);
+
+bool grpc_cq_can_listen(grpc_completion_queue* cc);
+
+grpc_cq_completion_type grpc_get_cq_completion_type(grpc_completion_queue* cc);
+
+int grpc_get_cq_poll_num(grpc_completion_queue* cc);
+
+grpc_completion_queue* grpc_completion_queue_create_internal(
+    grpc_cq_completion_type completion_type, grpc_cq_polling_type polling_type,
+    grpc_experimental_completion_queue_functor* shutdown_callback);
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.cc
new file mode 100644
index 0000000..72aa03a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.cc	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/completion_queue_factory.h"
+
+#include <grpc/support/log.h>
+
+/*
+ * == Default completion queue factory implementation ==
+ */
+
+static grpc_completion_queue* default_create(
+    const grpc_completion_queue_factory* /*factory*/,
+    const grpc_completion_queue_attributes* attr) {
+  return grpc_completion_queue_create_internal(
+      attr->cq_completion_type, attr->cq_polling_type, attr->cq_shutdown_cb);
+}
+
+static grpc_completion_queue_factory_vtable default_vtable = {default_create};
+
+static const grpc_completion_queue_factory g_default_cq_factory = {
+    "Default Factory", nullptr, &default_vtable};
+
+/*
+ * == Completion queue factory APIs
+ */
+
+const grpc_completion_queue_factory* grpc_completion_queue_factory_lookup(
+    const grpc_completion_queue_attributes* attributes) {
+  GPR_ASSERT(attributes->version >= 1 &&
+             attributes->version <= GRPC_CQ_CURRENT_VERSION);
+
+  /* The default factory can handle version 1 of the attributes structure. We
+     may have to change this as more fields are added to the structure */
+  return &g_default_cq_factory;
+}
+
+/*
+ * == Completion queue creation APIs ==
+ */
+
+grpc_completion_queue* grpc_completion_queue_create_for_next(void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_completion_queue_attributes attr = {1, GRPC_CQ_NEXT,
+                                           GRPC_CQ_DEFAULT_POLLING, nullptr};
+  return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr);
+}
+
+grpc_completion_queue* grpc_completion_queue_create_for_pluck(void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_completion_queue_attributes attr = {1, GRPC_CQ_PLUCK,
+                                           GRPC_CQ_DEFAULT_POLLING, nullptr};
+  return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr);
+}
+
+grpc_completion_queue* grpc_completion_queue_create_for_callback(
+    grpc_experimental_completion_queue_functor* shutdown_callback,
+    void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_completion_queue_attributes attr = {
+      2, GRPC_CQ_CALLBACK, GRPC_CQ_DEFAULT_POLLING, shutdown_callback};
+  return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr);
+}
+
+grpc_completion_queue* grpc_completion_queue_create(
+    const grpc_completion_queue_factory* factory,
+    const grpc_completion_queue_attributes* attr, void* reserved) {
+  GPR_ASSERT(!reserved);
+  return factory->vtable->create(factory, attr);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.h
new file mode 100644
index 0000000..d2b30a9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/completion_queue_factory.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/surface/completion_queue.h"
+
+typedef struct grpc_completion_queue_factory_vtable {
+  grpc_completion_queue* (*create)(const grpc_completion_queue_factory*,
+                                   const grpc_completion_queue_attributes*);
+} grpc_completion_queue_factory_vtable;
+
+struct grpc_completion_queue_factory {
+  const char* name;
+  void* data; /* Factory specific data */
+  grpc_completion_queue_factory_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.cc
new file mode 100644
index 0000000..d639bae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.cc	
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/event_string.h"
+
+#include <stdio.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+
+static void addhdr(gpr_strvec* buf, grpc_event* ev) {
+  char* tmp;
+  gpr_asprintf(&tmp, "tag:%p", ev->tag);
+  gpr_strvec_add(buf, tmp);
+}
+
+static const char* errstr(int success) { return success ? "OK" : "ERROR"; }
+
+static void adderr(gpr_strvec* buf, int success) {
+  char* tmp;
+  gpr_asprintf(&tmp, " %s", errstr(success));
+  gpr_strvec_add(buf, tmp);
+}
+
+char* grpc_event_string(grpc_event* ev) {
+  char* out;
+  gpr_strvec buf;
+
+  if (ev == nullptr) return gpr_strdup("null");
+
+  gpr_strvec_init(&buf);
+
+  switch (ev->type) {
+    case GRPC_QUEUE_TIMEOUT:
+      gpr_strvec_add(&buf, gpr_strdup("QUEUE_TIMEOUT"));
+      break;
+    case GRPC_QUEUE_SHUTDOWN:
+      gpr_strvec_add(&buf, gpr_strdup("QUEUE_SHUTDOWN"));
+      break;
+    case GRPC_OP_COMPLETE:
+      gpr_strvec_add(&buf, gpr_strdup("OP_COMPLETE: "));
+      addhdr(&buf, ev);
+      adderr(&buf, ev->success);
+      break;
+  }
+
+  out = gpr_strvec_flatten(&buf, nullptr);
+  gpr_strvec_destroy(&buf);
+  return out;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.h
new file mode 100644
index 0000000..e609570
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/event_string.h	
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
+#define GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+/* Returns a string describing an event. Must be later freed with gpr_free() */
+char* grpc_event_string(grpc_event* ev);
+
+#endif /* GRPC_CORE_LIB_SURFACE_EVENT_STRING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.cc
new file mode 100644
index 0000000..d8bc4e4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.cc	
@@ -0,0 +1,250 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <limits.h>
+#include <memory.h>
+
+#include <grpc/fork.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channelz_registry.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/fork.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/init.h"
+#include "src/core/lib/surface/lame_client.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/transport/bdp_estimator.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+/* (generated) built in registry of plugins */
+extern void grpc_register_built_in_plugins(void);
+
+#define MAX_PLUGINS 128
+
+static gpr_once g_basic_init = GPR_ONCE_INIT;
+static gpr_mu g_init_mu;
+static int g_initializations;
+static gpr_cv* g_shutting_down_cv;
+static bool g_shutting_down;
+
+static void do_basic_init(void) {
+  gpr_log_verbosity_init();
+  gpr_mu_init(&g_init_mu);
+  g_shutting_down_cv = static_cast<gpr_cv*>(malloc(sizeof(gpr_cv)));
+  gpr_cv_init(g_shutting_down_cv);
+  g_shutting_down = false;
+  grpc_register_built_in_plugins();
+  grpc_cq_global_init();
+  grpc_core::grpc_executor_global_init();
+  gpr_time_init();
+  g_initializations = 0;
+}
+
+static bool append_filter(grpc_channel_stack_builder* builder, void* arg) {
+  return grpc_channel_stack_builder_append_filter(
+      builder, static_cast<const grpc_channel_filter*>(arg), nullptr, nullptr);
+}
+
+static bool prepend_filter(grpc_channel_stack_builder* builder, void* arg) {
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, static_cast<const grpc_channel_filter*>(arg), nullptr, nullptr);
+}
+
+static void register_builtin_channel_init() {
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   grpc_add_connected_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   grpc_add_connected_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   grpc_add_connected_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_CLIENT_LAME_CHANNEL,
+                                   GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
+                                   append_filter, (void*)&grpc_lame_filter);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter,
+                                   (void*)&grpc_server_top_filter);
+}
+
+typedef struct grpc_plugin {
+  void (*init)();
+  void (*destroy)();
+} grpc_plugin;
+
+static grpc_plugin g_all_of_the_plugins[MAX_PLUGINS];
+static int g_number_of_plugins = 0;
+
+void grpc_register_plugin(void (*init)(void), void (*destroy)(void)) {
+  GRPC_API_TRACE("grpc_register_plugin(init=%p, destroy=%p)", 2,
+                 ((void*)(intptr_t)init, (void*)(intptr_t)destroy));
+  GPR_ASSERT(g_number_of_plugins != MAX_PLUGINS);
+  g_all_of_the_plugins[g_number_of_plugins].init = init;
+  g_all_of_the_plugins[g_number_of_plugins].destroy = destroy;
+  g_number_of_plugins++;
+}
+
+void grpc_init(void) {
+  int i;
+  gpr_once_init(&g_basic_init, do_basic_init);
+
+  grpc_core::MutexLock lock(&g_init_mu);
+  if (++g_initializations == 1) {
+    if (g_shutting_down) {
+      g_shutting_down = false;
+      gpr_cv_broadcast(g_shutting_down_cv);
+    }
+    grpc_core::Fork::GlobalInit();
+    grpc_fork_handlers_auto_register();
+    grpc_stats_init();
+    grpc_init_static_metadata_ctx();
+    grpc_slice_intern_init();
+    grpc_mdctx_global_init();
+    grpc_channel_init_init();
+    grpc_core::channelz::ChannelzRegistry::Init();
+    grpc_security_pre_init();
+    grpc_core::ApplicationCallbackExecCtx::GlobalInit();
+    grpc_core::ExecCtx::GlobalInit();
+    grpc_iomgr_init();
+    gpr_timers_global_init();
+    grpc_core::HandshakerRegistry::Init();
+    grpc_security_init();
+    for (i = 0; i < g_number_of_plugins; i++) {
+      if (g_all_of_the_plugins[i].init != nullptr) {
+        g_all_of_the_plugins[i].init();
+      }
+    }
+    /* register channel finalization AFTER all plugins, to ensure that it's run
+     * at the appropriate time */
+    grpc_register_security_filters();
+    register_builtin_channel_init();
+    grpc_tracer_init();
+    /* no more changes to channel init pipelines */
+    grpc_channel_init_finalize();
+    grpc_iomgr_start();
+  }
+
+  GRPC_API_TRACE("grpc_init(void)", 0, ());
+}
+
+void grpc_shutdown_internal_locked(void) {
+  int i;
+  {
+    grpc_core::ExecCtx exec_ctx(0);
+    grpc_iomgr_shutdown_background_closure();
+    {
+      grpc_timer_manager_set_threading(false);  // shutdown timer_manager thread
+      grpc_core::Executor::ShutdownAll();
+      for (i = g_number_of_plugins; i >= 0; i--) {
+        if (g_all_of_the_plugins[i].destroy != nullptr) {
+          g_all_of_the_plugins[i].destroy();
+        }
+      }
+    }
+    grpc_iomgr_shutdown();
+    gpr_timers_global_destroy();
+    grpc_tracer_shutdown();
+    grpc_mdctx_global_shutdown();
+    grpc_core::HandshakerRegistry::Shutdown();
+    grpc_slice_intern_shutdown();
+    grpc_core::channelz::ChannelzRegistry::Shutdown();
+    grpc_stats_shutdown();
+    grpc_core::Fork::GlobalShutdown();
+  }
+  grpc_core::ExecCtx::GlobalShutdown();
+  grpc_core::ApplicationCallbackExecCtx::GlobalShutdown();
+  g_shutting_down = false;
+  gpr_cv_broadcast(g_shutting_down_cv);
+  // Absolute last action will be to delete static metadata context.
+  grpc_destroy_static_metadata_ctx();
+}
+
+void grpc_shutdown_internal(void* /*ignored*/) {
+  GRPC_API_TRACE("grpc_shutdown_internal", 0, ());
+  grpc_core::MutexLock lock(&g_init_mu);
+  // We have released lock from the shutdown thread and it is possible that
+  // another grpc_init has been called, and do nothing if that is the case.
+  if (--g_initializations != 0) {
+    return;
+  }
+  grpc_shutdown_internal_locked();
+}
+
+void grpc_shutdown(void) {
+  GRPC_API_TRACE("grpc_shutdown(void)", 0, ());
+  grpc_core::MutexLock lock(&g_init_mu);
+  if (--g_initializations == 0) {
+    g_initializations++;
+    g_shutting_down = true;
+    // spawn a detached thread to do the actual clean up in case we are
+    // currently in an executor thread.
+    grpc_core::Thread cleanup_thread(
+        "grpc_shutdown", grpc_shutdown_internal, nullptr, nullptr,
+        grpc_core::Thread::Options().set_joinable(false).set_tracked(false));
+    cleanup_thread.Start();
+  }
+}
+
+void grpc_shutdown_blocking(void) {
+  GRPC_API_TRACE("grpc_shutdown_blocking(void)", 0, ());
+  grpc_core::MutexLock lock(&g_init_mu);
+  if (--g_initializations == 0) {
+    g_shutting_down = true;
+    grpc_shutdown_internal_locked();
+  }
+}
+
+int grpc_is_initialized(void) {
+  int r;
+  gpr_once_init(&g_basic_init, do_basic_init);
+  grpc_core::MutexLock lock(&g_init_mu);
+  r = g_initializations > 0;
+  return r;
+}
+
+void grpc_maybe_wait_for_async_shutdown(void) {
+  gpr_once_init(&g_basic_init, do_basic_init);
+  grpc_core::MutexLock lock(&g_init_mu);
+  while (g_shutting_down) {
+    gpr_cv_wait(g_shutting_down_cv, &g_init_mu,
+                gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.h
new file mode 100644
index 0000000..6eaa488
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init.h	
@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_INIT_H
+#define GRPC_CORE_LIB_SURFACE_INIT_H
+
+void grpc_register_security_filters(void);
+void grpc_security_pre_init(void);
+void grpc_security_init(void);
+void grpc_maybe_wait_for_async_shutdown(void);
+
+#endif /* GRPC_CORE_LIB_SURFACE_INIT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init_secure.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init_secure.cc
new file mode 100644
index 0000000..f2c236d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/init_secure.cc	
@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/init.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/security/context/security_context.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/credentials/plugin/plugin_credentials.h"
+#include "src/core/lib/security/security_connector/security_connector.h"
+#include "src/core/lib/security/transport/auth_filters.h"
+#include "src/core/lib/security/transport/secure_endpoint.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+void grpc_security_pre_init(void) {}
+
+static bool maybe_prepend_client_auth_filter(
+    grpc_channel_stack_builder* builder, void* /*arg*/) {
+  const grpc_channel_args* args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  if (args) {
+    for (size_t i = 0; i < args->num_args; i++) {
+      if (0 == strcmp(GRPC_ARG_SECURITY_CONNECTOR, args->args[i].key)) {
+        return grpc_channel_stack_builder_prepend_filter(
+            builder, &grpc_client_auth_filter, nullptr, nullptr);
+      }
+    }
+  }
+  return true;
+}
+
+static bool maybe_prepend_server_auth_filter(
+    grpc_channel_stack_builder* builder, void* /*arg*/) {
+  const grpc_channel_args* args =
+      grpc_channel_stack_builder_get_channel_arguments(builder);
+  if (args) {
+    for (size_t i = 0; i < args->num_args; i++) {
+      if (0 == strcmp(GRPC_SERVER_CREDENTIALS_ARG, args->args[i].key)) {
+        return grpc_channel_stack_builder_prepend_filter(
+            builder, &grpc_server_auth_filter, nullptr, nullptr);
+      }
+    }
+  }
+  return true;
+}
+
+void grpc_register_security_filters(void) {
+  // Register the auth client with a priority < INT_MAX to allow the authority
+  // filter -on which the auth filter depends- to be higher on the channel
+  // stack.
+  grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX - 1,
+                                   maybe_prepend_client_auth_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX - 1,
+                                   maybe_prepend_client_auth_filter, nullptr);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX - 1,
+                                   maybe_prepend_server_auth_filter, nullptr);
+}
+
+void grpc_security_init() {
+  grpc_core::SecurityRegisterHandshakerFactories();
+  grpc_control_plane_credentials_init();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.cc
new file mode 100644
index 0000000..a9f5c9c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.cc	
@@ -0,0 +1,191 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/lame_client.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+namespace grpc_core {
+
+namespace {
+
+struct CallData {
+  CallCombiner* call_combiner;
+  grpc_linked_mdelem status;
+  grpc_linked_mdelem details;
+  Atomic<bool> filled_metadata;
+};
+
+struct ChannelData {
+  ChannelData() : state_tracker("lame_channel", GRPC_CHANNEL_SHUTDOWN) {}
+
+  grpc_status_code error_code;
+  const char* error_message;
+  Mutex mu;
+  ConnectivityStateTracker state_tracker;
+};
+
+static void fill_metadata(grpc_call_element* elem, grpc_metadata_batch* mdb) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  bool expected = false;
+  if (!calld->filled_metadata.CompareExchangeStrong(
+          &expected, true, MemoryOrder::RELAXED, MemoryOrder::RELAXED)) {
+    return;
+  }
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  char tmp[GPR_LTOA_MIN_BUFSIZE];
+  gpr_ltoa(chand->error_code, tmp);
+  calld->status.md = grpc_mdelem_from_slices(
+      GRPC_MDSTR_GRPC_STATUS, grpc_core::UnmanagedMemorySlice(tmp));
+  calld->details.md = grpc_mdelem_from_slices(
+      GRPC_MDSTR_GRPC_MESSAGE,
+      grpc_core::UnmanagedMemorySlice(chand->error_message));
+  calld->status.prev = calld->details.next = nullptr;
+  calld->status.next = &calld->details;
+  calld->details.prev = &calld->status;
+  mdb->list.head = &calld->status;
+  mdb->list.tail = &calld->details;
+  mdb->list.count = 2;
+  mdb->deadline = GRPC_MILLIS_INF_FUTURE;
+}
+
+static void lame_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  if (op->recv_initial_metadata) {
+    fill_metadata(elem,
+                  op->payload->recv_initial_metadata.recv_initial_metadata);
+  } else if (op->recv_trailing_metadata) {
+    fill_metadata(elem,
+                  op->payload->recv_trailing_metadata.recv_trailing_metadata);
+  }
+  grpc_transport_stream_op_batch_finish_with_failure(
+      op, GRPC_ERROR_CREATE_FROM_STATIC_STRING("lame client channel"),
+      calld->call_combiner);
+}
+
+static void lame_get_channel_info(grpc_channel_element* /*elem*/,
+                                  const grpc_channel_info* /*channel_info*/) {}
+
+static void lame_start_transport_op(grpc_channel_element* elem,
+                                    grpc_transport_op* op) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  {
+    MutexLock lock(&chand->mu);
+    if (op->start_connectivity_watch != nullptr) {
+      chand->state_tracker.AddWatcher(op->start_connectivity_watch_state,
+                                      std::move(op->start_connectivity_watch));
+    }
+    if (op->stop_connectivity_watch != nullptr) {
+      chand->state_tracker.RemoveWatcher(op->stop_connectivity_watch);
+    }
+  }
+  if (op->send_ping.on_initiate != nullptr) {
+    ExecCtx::Run(DEBUG_LOCATION, op->send_ping.on_initiate,
+                 GRPC_ERROR_CREATE_FROM_STATIC_STRING("lame client channel"));
+  }
+  if (op->send_ping.on_ack != nullptr) {
+    ExecCtx::Run(DEBUG_LOCATION, op->send_ping.on_ack,
+                 GRPC_ERROR_CREATE_FROM_STATIC_STRING("lame client channel"));
+  }
+  GRPC_ERROR_UNREF(op->disconnect_with_error);
+  if (op->on_consumed != nullptr) {
+    ExecCtx::Run(DEBUG_LOCATION, op->on_consumed, GRPC_ERROR_NONE);
+  }
+}
+
+static grpc_error* lame_init_call_elem(grpc_call_element* elem,
+                                       const grpc_call_element_args* args) {
+  CallData* calld = static_cast<CallData*>(elem->call_data);
+  calld->call_combiner = args->call_combiner;
+  return GRPC_ERROR_NONE;
+}
+
+static void lame_destroy_call_elem(grpc_call_element* /*elem*/,
+                                   const grpc_call_final_info* /*final_info*/,
+                                   grpc_closure* then_schedule_closure) {
+  ExecCtx::Run(DEBUG_LOCATION, then_schedule_closure, GRPC_ERROR_NONE);
+}
+
+static grpc_error* lame_init_channel_elem(grpc_channel_element* elem,
+                                          grpc_channel_element_args* args) {
+  GPR_ASSERT(args->is_first);
+  GPR_ASSERT(args->is_last);
+  new (elem->channel_data) ChannelData;
+  return GRPC_ERROR_NONE;
+}
+
+static void lame_destroy_channel_elem(grpc_channel_element* elem) {
+  ChannelData* chand = static_cast<ChannelData*>(elem->channel_data);
+  chand->~ChannelData();
+}
+
+}  // namespace
+
+}  // namespace grpc_core
+
+const grpc_channel_filter grpc_lame_filter = {
+    grpc_core::lame_start_transport_stream_op_batch,
+    grpc_core::lame_start_transport_op,
+    sizeof(grpc_core::CallData),
+    grpc_core::lame_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    grpc_core::lame_destroy_call_elem,
+    sizeof(grpc_core::ChannelData),
+    grpc_core::lame_init_channel_elem,
+    grpc_core::lame_destroy_channel_elem,
+    grpc_core::lame_get_channel_info,
+    "lame-client",
+};
+
+#define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack*)((c) + 1))
+
+grpc_channel* grpc_lame_client_channel_create(const char* target,
+                                              grpc_status_code error_code,
+                                              const char* error_message) {
+  grpc_core::ExecCtx exec_ctx;
+  grpc_channel_element* elem;
+  grpc_channel* channel =
+      grpc_channel_create(target, nullptr, GRPC_CLIENT_LAME_CHANNEL, nullptr);
+  elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
+  GRPC_API_TRACE(
+      "grpc_lame_client_channel_create(target=%s, error_code=%d, "
+      "error_message=%s)",
+      3, (target, (int)error_code, error_message));
+  GPR_ASSERT(elem->filter == &grpc_lame_filter);
+  auto chand = static_cast<grpc_core::ChannelData*>(elem->channel_data);
+  chand->error_code = error_code;
+  chand->error_message = error_message;
+
+  return channel;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.h
new file mode 100644
index 0000000..aefa67c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/lame_client.h	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
+#define GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_lame_filter;
+
+#endif /* GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/metadata_array.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/metadata_array.cc
new file mode 100644
index 0000000..f794a2b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/metadata_array.cc	
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+
+#include <string.h>
+
+#include "src/core/lib/surface/api_trace.h"
+
+void grpc_metadata_array_init(grpc_metadata_array* array) {
+  GRPC_API_TRACE("grpc_metadata_array_init(array=%p)", 1, (array));
+  memset(array, 0, sizeof(*array));
+}
+
+void grpc_metadata_array_destroy(grpc_metadata_array* array) {
+  GRPC_API_TRACE("grpc_metadata_array_destroy(array=%p)", 1, (array));
+  gpr_free(array->metadata);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.cc
new file mode 100644
index 0000000..e6c81d9
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.cc	
@@ -0,0 +1,1599 @@
+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/server.h"
+
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include <utility>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/gpr/spinlock.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/mpscq.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/init.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+grpc_core::TraceFlag grpc_server_channel_trace(false, "server_channel");
+
+using grpc_core::LockedMultiProducerSingleConsumerQueue;
+
+static void server_on_recv_initial_metadata(void* ptr, grpc_error* error);
+static void server_recv_trailing_metadata_ready(void* user_data,
+                                                grpc_error* error);
+
+namespace {
+struct listener {
+  void* arg;
+  void (*start)(grpc_server* server, void* arg, grpc_pollset** pollsets,
+                size_t pollset_count);
+  void (*destroy)(grpc_server* server, void* arg, grpc_closure* closure);
+  struct listener* next;
+  intptr_t socket_uuid;
+  grpc_closure destroy_done;
+};
+
+enum requested_call_type { BATCH_CALL, REGISTERED_CALL };
+
+struct registered_method;
+
+struct requested_call {
+  grpc_core::ManualConstructor<
+      grpc_core::MultiProducerSingleConsumerQueue::Node>
+      mpscq_node;
+  requested_call_type type;
+  size_t cq_idx;
+  void* tag;
+  grpc_server* server;
+  grpc_completion_queue* cq_bound_to_call;
+  grpc_call** call;
+  grpc_cq_completion completion;
+  grpc_metadata_array* initial_metadata;
+  union {
+    struct {
+      grpc_call_details* details;
+    } batch;
+    struct {
+      registered_method* method;
+      gpr_timespec* deadline;
+      grpc_byte_buffer** optional_payload;
+    } registered;
+  } data;
+};
+
+struct channel_registered_method {
+  registered_method* server_registered_method;
+  uint32_t flags;
+  bool has_host;
+  grpc_core::ExternallyManagedSlice method;
+  grpc_core::ExternallyManagedSlice host;
+};
+
+struct channel_data {
+  grpc_server* server;
+  grpc_channel* channel;
+  size_t cq_idx;
+  /* linked list of all channels on a server */
+  channel_data* next;
+  channel_data* prev;
+  channel_registered_method* registered_methods;
+  uint32_t registered_method_slots;
+  uint32_t registered_method_max_probes;
+  grpc_closure finish_destroy_channel_closure;
+  intptr_t channelz_socket_uuid;
+};
+
+typedef struct shutdown_tag {
+  void* tag;
+  grpc_completion_queue* cq;
+  grpc_cq_completion completion;
+} shutdown_tag;
+
+typedef enum {
+  /* waiting for metadata */
+  NOT_STARTED,
+  /* initial metadata read, not flow controlled in yet */
+  PENDING,
+  /* flow controlled in, on completion queue */
+  ACTIVATED,
+  /* cancelled before being queued */
+  ZOMBIED
+} call_state;
+
+typedef struct request_matcher request_matcher;
+
+struct call_data {
+  call_data(grpc_call_element* elem, const grpc_call_element_args& args)
+      : call(grpc_call_from_top_element(elem)),
+        call_combiner(args.call_combiner) {
+    GRPC_CLOSURE_INIT(&server_on_recv_initial_metadata,
+                      ::server_on_recv_initial_metadata, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CLOSURE_INIT(&recv_trailing_metadata_ready,
+                      server_recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+  }
+  ~call_data() {
+    GPR_ASSERT(state != PENDING);
+    GRPC_ERROR_UNREF(recv_initial_metadata_error);
+    if (host_set) {
+      grpc_slice_unref_internal(host);
+    }
+    if (path_set) {
+      grpc_slice_unref_internal(path);
+    }
+    grpc_metadata_array_destroy(&initial_metadata);
+    grpc_byte_buffer_destroy(payload);
+  }
+
+  grpc_call* call;
+
+  gpr_atm state = NOT_STARTED;
+
+  bool path_set = false;
+  bool host_set = false;
+  grpc_slice path;
+  grpc_slice host;
+  grpc_millis deadline = GRPC_MILLIS_INF_FUTURE;
+
+  grpc_completion_queue* cq_new = nullptr;
+
+  grpc_metadata_batch* recv_initial_metadata = nullptr;
+  uint32_t recv_initial_metadata_flags = 0;
+  grpc_metadata_array initial_metadata =
+      grpc_metadata_array();  // Zero-initialize the C struct.
+
+  request_matcher* matcher = nullptr;
+  grpc_byte_buffer* payload = nullptr;
+
+  grpc_closure got_initial_metadata;
+  grpc_closure server_on_recv_initial_metadata;
+  grpc_closure kill_zombie_closure;
+  grpc_closure* on_done_recv_initial_metadata;
+  grpc_closure recv_trailing_metadata_ready;
+  grpc_error* recv_initial_metadata_error = GRPC_ERROR_NONE;
+  grpc_closure* original_recv_trailing_metadata_ready;
+  grpc_error* recv_trailing_metadata_error = GRPC_ERROR_NONE;
+  bool seen_recv_trailing_metadata_ready = false;
+
+  grpc_closure publish;
+
+  call_data* pending_next = nullptr;
+  grpc_core::CallCombiner* call_combiner;
+};
+
+struct request_matcher {
+  grpc_server* server;
+  call_data* pending_head;
+  call_data* pending_tail;
+  LockedMultiProducerSingleConsumerQueue* requests_per_cq;
+};
+
+struct registered_method {
+  char* method;
+  char* host;
+  grpc_server_register_method_payload_handling payload_handling;
+  uint32_t flags;
+  /* one request matcher per method */
+  request_matcher matcher;
+  registered_method* next;
+};
+
+typedef struct {
+  grpc_channel** channels;
+  size_t num_channels;
+} channel_broadcaster;
+}  // namespace
+
+struct grpc_server {
+  grpc_channel_args* channel_args;
+
+  grpc_resource_user* default_resource_user;
+
+  grpc_completion_queue** cqs;
+  grpc_pollset** pollsets;
+  size_t cq_count;
+  size_t pollset_count;
+  bool started;
+
+  /* The two following mutexes control access to server-state
+     mu_global controls access to non-call-related state (e.g., channel state)
+     mu_call controls access to call-related state (e.g., the call lists)
+
+     If they are ever required to be nested, you must lock mu_global
+     before mu_call. This is currently used in shutdown processing
+     (grpc_server_shutdown_and_notify and maybe_finish_shutdown) */
+  gpr_mu mu_global; /* mutex for server and channel state */
+  gpr_mu mu_call;   /* mutex for call-specific state */
+
+  /* startup synchronization: flag is protected by mu_global, signals whether
+     we are doing the listener start routine or not */
+  bool starting;
+  gpr_cv starting_cv;
+
+  registered_method* registered_methods;
+  /** one request matcher for unregistered methods */
+  request_matcher unregistered_request_matcher;
+
+  gpr_atm shutdown_flag;
+  uint8_t shutdown_published;
+  size_t num_shutdown_tags;
+  shutdown_tag* shutdown_tags;
+
+  channel_data root_channel_data;
+
+  listener* listeners;
+  int listeners_destroyed;
+  grpc_core::RefCount internal_refcount;
+
+  /** when did we print the last shutdown progress message */
+  gpr_timespec last_shutdown_message_time;
+
+  grpc_core::RefCountedPtr<grpc_core::channelz::ServerNode> channelz_server;
+};
+
+#define SERVER_FROM_CALL_ELEM(elem) \
+  (((channel_data*)(elem)->channel_data)->server)
+
+static void publish_new_rpc(void* calld, grpc_error* error);
+static void fail_call(grpc_server* server, size_t cq_idx, requested_call* rc,
+                      grpc_error* error);
+/* Before calling maybe_finish_shutdown, we must hold mu_global and not
+   hold mu_call */
+static void maybe_finish_shutdown(grpc_server* server);
+
+/*
+ * channel broadcaster
+ */
+
+/* assumes server locked */
+static void channel_broadcaster_init(grpc_server* s, channel_broadcaster* cb) {
+  channel_data* c;
+  size_t count = 0;
+  for (c = s->root_channel_data.next; c != &s->root_channel_data; c = c->next) {
+    count++;
+  }
+  cb->num_channels = count;
+  cb->channels = static_cast<grpc_channel**>(
+      gpr_malloc(sizeof(*cb->channels) * cb->num_channels));
+  count = 0;
+  for (c = s->root_channel_data.next; c != &s->root_channel_data; c = c->next) {
+    cb->channels[count++] = c->channel;
+    GRPC_CHANNEL_INTERNAL_REF(c->channel, "broadcast");
+  }
+}
+
+struct shutdown_cleanup_args {
+  grpc_closure closure;
+  grpc_slice slice;
+};
+
+static void shutdown_cleanup(void* arg, grpc_error* /*error*/) {
+  struct shutdown_cleanup_args* a =
+      static_cast<struct shutdown_cleanup_args*>(arg);
+  grpc_slice_unref_internal(a->slice);
+  gpr_free(a);
+}
+
+static void send_shutdown(grpc_channel* channel, bool send_goaway,
+                          grpc_error* send_disconnect) {
+  struct shutdown_cleanup_args* sc =
+      static_cast<struct shutdown_cleanup_args*>(gpr_malloc(sizeof(*sc)));
+  GRPC_CLOSURE_INIT(&sc->closure, shutdown_cleanup, sc,
+                    grpc_schedule_on_exec_ctx);
+  grpc_transport_op* op = grpc_make_transport_op(&sc->closure);
+  grpc_channel_element* elem;
+
+  op->goaway_error =
+      send_goaway ? grpc_error_set_int(
+                        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server shutdown"),
+                        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_OK)
+                  : GRPC_ERROR_NONE;
+  op->set_accept_stream = true;
+  sc->slice = grpc_slice_from_copied_string("Server shutdown");
+  op->disconnect_with_error = send_disconnect;
+
+  elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
+  elem->filter->start_transport_op(elem, op);
+}
+
+static void channel_broadcaster_shutdown(channel_broadcaster* cb,
+                                         bool send_goaway,
+                                         grpc_error* force_disconnect) {
+  size_t i;
+
+  for (i = 0; i < cb->num_channels; i++) {
+    send_shutdown(cb->channels[i], send_goaway,
+                  GRPC_ERROR_REF(force_disconnect));
+    GRPC_CHANNEL_INTERNAL_UNREF(cb->channels[i], "broadcast");
+  }
+  gpr_free(cb->channels);
+  GRPC_ERROR_UNREF(force_disconnect);
+}
+
+/*
+ * request_matcher
+ */
+
+static void request_matcher_init(request_matcher* rm, grpc_server* server) {
+  rm->server = server;
+  rm->pending_head = rm->pending_tail = nullptr;
+  rm->requests_per_cq = static_cast<LockedMultiProducerSingleConsumerQueue*>(
+      gpr_malloc(sizeof(*rm->requests_per_cq) * server->cq_count));
+  for (size_t i = 0; i < server->cq_count; i++) {
+    new (&rm->requests_per_cq[i]) LockedMultiProducerSingleConsumerQueue();
+  }
+}
+
+static void request_matcher_destroy(request_matcher* rm) {
+  for (size_t i = 0; i < rm->server->cq_count; i++) {
+    GPR_ASSERT(rm->requests_per_cq[i].Pop() == nullptr);
+    rm->requests_per_cq[i].~LockedMultiProducerSingleConsumerQueue();
+  }
+  gpr_free(rm->requests_per_cq);
+}
+
+static void kill_zombie(void* elem, grpc_error* /*error*/) {
+  grpc_call_unref(
+      grpc_call_from_top_element(static_cast<grpc_call_element*>(elem)));
+}
+
+static void request_matcher_zombify_all_pending_calls(request_matcher* rm) {
+  while (rm->pending_head) {
+    call_data* calld = rm->pending_head;
+    rm->pending_head = calld->pending_next;
+    gpr_atm_no_barrier_store(&calld->state, ZOMBIED);
+    GRPC_CLOSURE_INIT(
+        &calld->kill_zombie_closure, kill_zombie,
+        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+        grpc_schedule_on_exec_ctx);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &calld->kill_zombie_closure,
+                            GRPC_ERROR_NONE);
+  }
+}
+
+static void request_matcher_kill_requests(grpc_server* server,
+                                          request_matcher* rm,
+                                          grpc_error* error) {
+  requested_call* rc;
+  for (size_t i = 0; i < server->cq_count; i++) {
+    while ((rc = reinterpret_cast<requested_call*>(
+                rm->requests_per_cq[i].Pop())) != nullptr) {
+      fail_call(server, i, rc, GRPC_ERROR_REF(error));
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+/*
+ * server proper
+ */
+
+static void server_ref(grpc_server* server) { server->internal_refcount.Ref(); }
+
+static void server_delete(grpc_server* server) {
+  registered_method* rm;
+  size_t i;
+  server->channelz_server.reset();
+  grpc_channel_args_destroy(server->channel_args);
+  gpr_mu_destroy(&server->mu_global);
+  gpr_mu_destroy(&server->mu_call);
+  gpr_cv_destroy(&server->starting_cv);
+  while ((rm = server->registered_methods) != nullptr) {
+    server->registered_methods = rm->next;
+    if (server->started) {
+      request_matcher_destroy(&rm->matcher);
+    }
+    gpr_free(rm->method);
+    gpr_free(rm->host);
+    gpr_free(rm);
+  }
+  if (server->started) {
+    request_matcher_destroy(&server->unregistered_request_matcher);
+  }
+  for (i = 0; i < server->cq_count; i++) {
+    GRPC_CQ_INTERNAL_UNREF(server->cqs[i], "server");
+  }
+  gpr_free(server->cqs);
+  gpr_free(server->pollsets);
+  gpr_free(server->shutdown_tags);
+  gpr_free(server);
+}
+
+static void server_unref(grpc_server* server) {
+  if (GPR_UNLIKELY(server->internal_refcount.Unref())) {
+    server_delete(server);
+  }
+}
+
+static int is_channel_orphaned(channel_data* chand) {
+  return chand->next == chand;
+}
+
+static void orphan_channel(channel_data* chand) {
+  chand->next->prev = chand->prev;
+  chand->prev->next = chand->next;
+  chand->next = chand->prev = chand;
+}
+
+static void finish_destroy_channel(void* cd, grpc_error* /*error*/) {
+  channel_data* chand = static_cast<channel_data*>(cd);
+  grpc_server* server = chand->server;
+  GRPC_CHANNEL_INTERNAL_UNREF(chand->channel, "server");
+  server_unref(server);
+}
+
+static void destroy_channel(channel_data* chand) {
+  if (is_channel_orphaned(chand)) return;
+  GPR_ASSERT(chand->server != nullptr);
+  orphan_channel(chand);
+  server_ref(chand->server);
+  maybe_finish_shutdown(chand->server);
+  GRPC_CLOSURE_INIT(&chand->finish_destroy_channel_closure,
+                    finish_destroy_channel, chand, grpc_schedule_on_exec_ctx);
+
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_server_channel_trace)) {
+    gpr_log(GPR_INFO, "Disconnected client");
+  }
+
+  grpc_transport_op* op =
+      grpc_make_transport_op(&chand->finish_destroy_channel_closure);
+  op->set_accept_stream = true;
+  grpc_channel_next_op(grpc_channel_stack_element(
+                           grpc_channel_get_channel_stack(chand->channel), 0),
+                       op);
+}
+
+static void done_request_event(void* req, grpc_cq_completion* /*c*/) {
+  gpr_free(req);
+}
+
+static void publish_call(grpc_server* server, call_data* calld, size_t cq_idx,
+                         requested_call* rc) {
+  grpc_call_set_completion_queue(calld->call, rc->cq_bound_to_call);
+  grpc_call* call = calld->call;
+  *rc->call = call;
+  calld->cq_new = server->cqs[cq_idx];
+  GPR_SWAP(grpc_metadata_array, *rc->initial_metadata, calld->initial_metadata);
+  switch (rc->type) {
+    case BATCH_CALL:
+      GPR_ASSERT(calld->host_set);
+      GPR_ASSERT(calld->path_set);
+      rc->data.batch.details->host = grpc_slice_ref_internal(calld->host);
+      rc->data.batch.details->method = grpc_slice_ref_internal(calld->path);
+      rc->data.batch.details->deadline =
+          grpc_millis_to_timespec(calld->deadline, GPR_CLOCK_MONOTONIC);
+      rc->data.batch.details->flags = calld->recv_initial_metadata_flags;
+      break;
+    case REGISTERED_CALL:
+      *rc->data.registered.deadline =
+          grpc_millis_to_timespec(calld->deadline, GPR_CLOCK_MONOTONIC);
+      if (rc->data.registered.optional_payload) {
+        *rc->data.registered.optional_payload = calld->payload;
+        calld->payload = nullptr;
+      }
+      break;
+    default:
+      GPR_UNREACHABLE_CODE(return );
+  }
+
+  grpc_cq_end_op(calld->cq_new, rc->tag, GRPC_ERROR_NONE, done_request_event,
+                 rc, &rc->completion, true);
+}
+
+static void publish_new_rpc(void* arg, grpc_error* error) {
+  grpc_call_element* call_elem = static_cast<grpc_call_element*>(arg);
+  call_data* calld = static_cast<call_data*>(call_elem->call_data);
+  channel_data* chand = static_cast<channel_data*>(call_elem->channel_data);
+  request_matcher* rm = calld->matcher;
+  grpc_server* server = rm->server;
+
+  if (error != GRPC_ERROR_NONE || gpr_atm_acq_load(&server->shutdown_flag)) {
+    gpr_atm_no_barrier_store(&calld->state, ZOMBIED);
+    GRPC_CLOSURE_INIT(
+        &calld->kill_zombie_closure, kill_zombie,
+        grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+        grpc_schedule_on_exec_ctx);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &calld->kill_zombie_closure,
+                            GRPC_ERROR_REF(error));
+    return;
+  }
+
+  for (size_t i = 0; i < server->cq_count; i++) {
+    size_t cq_idx = (chand->cq_idx + i) % server->cq_count;
+    requested_call* rc =
+        reinterpret_cast<requested_call*>(rm->requests_per_cq[cq_idx].TryPop());
+    if (rc == nullptr) {
+      continue;
+    } else {
+      GRPC_STATS_INC_SERVER_CQS_CHECKED(i);
+      gpr_atm_no_barrier_store(&calld->state, ACTIVATED);
+      publish_call(server, calld, cq_idx, rc);
+      return; /* early out */
+    }
+  }
+
+  /* no cq to take the request found: queue it on the slow list */
+  GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED();
+  gpr_mu_lock(&server->mu_call);
+
+  // We need to ensure that all the queues are empty.  We do this under
+  // the server mu_call lock to ensure that if something is added to
+  // an empty request queue, it will block until the call is actually
+  // added to the pending list.
+  for (size_t i = 0; i < server->cq_count; i++) {
+    size_t cq_idx = (chand->cq_idx + i) % server->cq_count;
+    requested_call* rc =
+        reinterpret_cast<requested_call*>(rm->requests_per_cq[cq_idx].Pop());
+    if (rc == nullptr) {
+      continue;
+    } else {
+      gpr_mu_unlock(&server->mu_call);
+      GRPC_STATS_INC_SERVER_CQS_CHECKED(i + server->cq_count);
+      gpr_atm_no_barrier_store(&calld->state, ACTIVATED);
+      publish_call(server, calld, cq_idx, rc);
+      return; /* early out */
+    }
+  }
+
+  gpr_atm_no_barrier_store(&calld->state, PENDING);
+  if (rm->pending_head == nullptr) {
+    rm->pending_tail = rm->pending_head = calld;
+  } else {
+    rm->pending_tail->pending_next = calld;
+    rm->pending_tail = calld;
+  }
+  calld->pending_next = nullptr;
+  gpr_mu_unlock(&server->mu_call);
+}
+
+static void finish_start_new_rpc(
+    grpc_server* server, grpc_call_element* elem, request_matcher* rm,
+    grpc_server_register_method_payload_handling payload_handling) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+
+  if (gpr_atm_acq_load(&server->shutdown_flag)) {
+    gpr_atm_no_barrier_store(&calld->state, ZOMBIED);
+    GRPC_CLOSURE_INIT(&calld->kill_zombie_closure, kill_zombie, elem,
+                      grpc_schedule_on_exec_ctx);
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &calld->kill_zombie_closure,
+                            GRPC_ERROR_NONE);
+    return;
+  }
+
+  calld->matcher = rm;
+
+  switch (payload_handling) {
+    case GRPC_SRM_PAYLOAD_NONE:
+      publish_new_rpc(elem, GRPC_ERROR_NONE);
+      break;
+    case GRPC_SRM_PAYLOAD_READ_INITIAL_BYTE_BUFFER: {
+      grpc_op op;
+      op.op = GRPC_OP_RECV_MESSAGE;
+      op.flags = 0;
+      op.reserved = nullptr;
+      op.data.recv_message.recv_message = &calld->payload;
+      GRPC_CLOSURE_INIT(&calld->publish, publish_new_rpc, elem,
+                        grpc_schedule_on_exec_ctx);
+      grpc_call_start_batch_and_execute(calld->call, &op, 1, &calld->publish);
+      break;
+    }
+  }
+}
+
+static void start_new_rpc(grpc_call_element* elem) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_server* server = chand->server;
+  uint32_t i;
+  uint32_t hash;
+  channel_registered_method* rm;
+
+  if (chand->registered_methods && calld->path_set && calld->host_set) {
+    /* TODO(ctiller): unify these two searches */
+    /* check for an exact match with host */
+    hash = GRPC_MDSTR_KV_HASH(grpc_slice_hash_internal(calld->host),
+                              grpc_slice_hash_internal(calld->path));
+    for (i = 0; i <= chand->registered_method_max_probes; i++) {
+      rm = &chand->registered_methods[(hash + i) %
+                                      chand->registered_method_slots];
+      if (rm->server_registered_method == nullptr) break;
+      if (!rm->has_host) continue;
+      if (rm->host != calld->host) continue;
+      if (rm->method != calld->path) continue;
+      if ((rm->flags & GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST) &&
+          0 == (calld->recv_initial_metadata_flags &
+                GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST)) {
+        continue;
+      }
+      finish_start_new_rpc(server, elem, &rm->server_registered_method->matcher,
+                           rm->server_registered_method->payload_handling);
+      return;
+    }
+    /* check for a wildcard method definition (no host set) */
+    hash = GRPC_MDSTR_KV_HASH(0, grpc_slice_hash_internal(calld->path));
+    for (i = 0; i <= chand->registered_method_max_probes; i++) {
+      rm = &chand->registered_methods[(hash + i) %
+                                      chand->registered_method_slots];
+      if (rm->server_registered_method == nullptr) break;
+      if (rm->has_host) continue;
+      if (rm->method != calld->path) continue;
+      if ((rm->flags & GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST) &&
+          0 == (calld->recv_initial_metadata_flags &
+                GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST)) {
+        continue;
+      }
+      finish_start_new_rpc(server, elem, &rm->server_registered_method->matcher,
+                           rm->server_registered_method->payload_handling);
+      return;
+    }
+  }
+  finish_start_new_rpc(server, elem, &server->unregistered_request_matcher,
+                       GRPC_SRM_PAYLOAD_NONE);
+}
+
+static int num_listeners(grpc_server* server) {
+  listener* l;
+  int n = 0;
+  for (l = server->listeners; l; l = l->next) {
+    n++;
+  }
+  return n;
+}
+
+static void done_shutdown_event(void* server,
+                                grpc_cq_completion* /*completion*/) {
+  server_unref(static_cast<grpc_server*>(server));
+}
+
+static int num_channels(grpc_server* server) {
+  channel_data* chand;
+  int n = 0;
+  for (chand = server->root_channel_data.next;
+       chand != &server->root_channel_data; chand = chand->next) {
+    n++;
+  }
+  return n;
+}
+
+static void kill_pending_work_locked(grpc_server* server, grpc_error* error) {
+  if (server->started) {
+    request_matcher_kill_requests(server, &server->unregistered_request_matcher,
+                                  GRPC_ERROR_REF(error));
+    request_matcher_zombify_all_pending_calls(
+        &server->unregistered_request_matcher);
+    for (registered_method* rm = server->registered_methods; rm;
+         rm = rm->next) {
+      request_matcher_kill_requests(server, &rm->matcher,
+                                    GRPC_ERROR_REF(error));
+      request_matcher_zombify_all_pending_calls(&rm->matcher);
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static void maybe_finish_shutdown(grpc_server* server) {
+  size_t i;
+  if (!gpr_atm_acq_load(&server->shutdown_flag) || server->shutdown_published) {
+    return;
+  }
+
+  gpr_mu_lock(&server->mu_call);
+  kill_pending_work_locked(
+      server, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server Shutdown"));
+  gpr_mu_unlock(&server->mu_call);
+
+  if (server->root_channel_data.next != &server->root_channel_data ||
+      server->listeners_destroyed < num_listeners(server)) {
+    if (gpr_time_cmp(gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME),
+                                  server->last_shutdown_message_time),
+                     gpr_time_from_seconds(1, GPR_TIMESPAN)) >= 0) {
+      server->last_shutdown_message_time = gpr_now(GPR_CLOCK_REALTIME);
+      gpr_log(GPR_DEBUG,
+              "Waiting for %d channels and %d/%d listeners to be destroyed"
+              " before shutting down server",
+              num_channels(server),
+              num_listeners(server) - server->listeners_destroyed,
+              num_listeners(server));
+    }
+    return;
+  }
+  server->shutdown_published = 1;
+  for (i = 0; i < server->num_shutdown_tags; i++) {
+    server_ref(server);
+    grpc_cq_end_op(server->shutdown_tags[i].cq, server->shutdown_tags[i].tag,
+                   GRPC_ERROR_NONE, done_shutdown_event, server,
+                   &server->shutdown_tags[i].completion);
+  }
+}
+
+static void server_on_recv_initial_metadata(void* ptr, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(ptr);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_millis op_deadline;
+
+  if (error == GRPC_ERROR_NONE) {
+    GPR_DEBUG_ASSERT(calld->recv_initial_metadata->idx.named.path != nullptr);
+    GPR_DEBUG_ASSERT(calld->recv_initial_metadata->idx.named.authority !=
+                     nullptr);
+    calld->path = grpc_slice_ref_internal(
+        GRPC_MDVALUE(calld->recv_initial_metadata->idx.named.path->md));
+    calld->host = grpc_slice_ref_internal(
+        GRPC_MDVALUE(calld->recv_initial_metadata->idx.named.authority->md));
+    calld->path_set = true;
+    calld->host_set = true;
+    grpc_metadata_batch_remove(calld->recv_initial_metadata, GRPC_BATCH_PATH);
+    grpc_metadata_batch_remove(calld->recv_initial_metadata,
+                               GRPC_BATCH_AUTHORITY);
+  } else {
+    GRPC_ERROR_REF(error);
+  }
+  op_deadline = calld->recv_initial_metadata->deadline;
+  if (op_deadline != GRPC_MILLIS_INF_FUTURE) {
+    calld->deadline = op_deadline;
+  }
+  if (calld->host_set && calld->path_set) {
+    /* do nothing */
+  } else {
+    /* Pass the error reference to calld->recv_initial_metadata_error */
+    grpc_error* src_error = error;
+    error = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+        "Missing :authority or :path", &src_error, 1);
+    GRPC_ERROR_UNREF(src_error);
+    calld->recv_initial_metadata_error = GRPC_ERROR_REF(error);
+  }
+  grpc_closure* closure = calld->on_done_recv_initial_metadata;
+  calld->on_done_recv_initial_metadata = nullptr;
+  if (calld->seen_recv_trailing_metadata_ready) {
+    GRPC_CALL_COMBINER_START(calld->call_combiner,
+                             &calld->recv_trailing_metadata_ready,
+                             calld->recv_trailing_metadata_error,
+                             "continue server_recv_trailing_metadata_ready");
+  }
+  grpc_core::Closure::Run(DEBUG_LOCATION, closure, error);
+}
+
+static void server_recv_trailing_metadata_ready(void* user_data,
+                                                grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(user_data);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (calld->on_done_recv_initial_metadata != nullptr) {
+    calld->recv_trailing_metadata_error = GRPC_ERROR_REF(error);
+    calld->seen_recv_trailing_metadata_ready = true;
+    GRPC_CLOSURE_INIT(&calld->recv_trailing_metadata_ready,
+                      server_recv_trailing_metadata_ready, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CALL_COMBINER_STOP(calld->call_combiner,
+                            "deferring server_recv_trailing_metadata_ready "
+                            "until after server_on_recv_initial_metadata");
+    return;
+  }
+  error =
+      grpc_error_add_child(GRPC_ERROR_REF(error),
+                           GRPC_ERROR_REF(calld->recv_initial_metadata_error));
+  grpc_core::Closure::Run(DEBUG_LOCATION,
+                          calld->original_recv_trailing_metadata_ready, error);
+}
+
+static void server_mutate_op(grpc_call_element* elem,
+                             grpc_transport_stream_op_batch* op) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+
+  if (op->recv_initial_metadata) {
+    GPR_ASSERT(op->payload->recv_initial_metadata.recv_flags == nullptr);
+    calld->recv_initial_metadata =
+        op->payload->recv_initial_metadata.recv_initial_metadata;
+    calld->on_done_recv_initial_metadata =
+        op->payload->recv_initial_metadata.recv_initial_metadata_ready;
+    op->payload->recv_initial_metadata.recv_initial_metadata_ready =
+        &calld->server_on_recv_initial_metadata;
+    op->payload->recv_initial_metadata.recv_flags =
+        &calld->recv_initial_metadata_flags;
+  }
+  if (op->recv_trailing_metadata) {
+    calld->original_recv_trailing_metadata_ready =
+        op->payload->recv_trailing_metadata.recv_trailing_metadata_ready;
+    op->payload->recv_trailing_metadata.recv_trailing_metadata_ready =
+        &calld->recv_trailing_metadata_ready;
+  }
+}
+
+static void server_start_transport_stream_op_batch(
+    grpc_call_element* elem, grpc_transport_stream_op_batch* op) {
+  server_mutate_op(elem, op);
+  grpc_call_next_op(elem, op);
+}
+
+static void got_initial_metadata(void* ptr, grpc_error* error) {
+  grpc_call_element* elem = static_cast<grpc_call_element*>(ptr);
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  if (error == GRPC_ERROR_NONE) {
+    start_new_rpc(elem);
+  } else {
+    if (gpr_atm_full_cas(&calld->state, NOT_STARTED, ZOMBIED)) {
+      GRPC_CLOSURE_INIT(&calld->kill_zombie_closure, kill_zombie, elem,
+                        grpc_schedule_on_exec_ctx);
+      grpc_core::ExecCtx::Run(DEBUG_LOCATION, &calld->kill_zombie_closure,
+                              GRPC_ERROR_NONE);
+    } else if (gpr_atm_full_cas(&calld->state, PENDING, ZOMBIED)) {
+      /* zombied call will be destroyed when it's removed from the pending
+         queue... later */
+    }
+  }
+}
+
+static void accept_stream(void* cd, grpc_transport* /*transport*/,
+                          const void* transport_server_data) {
+  channel_data* chand = static_cast<channel_data*>(cd);
+  /* create a call */
+  grpc_call_create_args args;
+  args.channel = chand->channel;
+  args.server = chand->server;
+  args.parent = nullptr;
+  args.propagation_mask = 0;
+  args.cq = nullptr;
+  args.pollset_set_alternative = nullptr;
+  args.server_transport_data = transport_server_data;
+  args.add_initial_metadata = nullptr;
+  args.add_initial_metadata_count = 0;
+  args.send_deadline = GRPC_MILLIS_INF_FUTURE;
+  grpc_call* call;
+  grpc_error* error = grpc_call_create(&args, &call);
+  grpc_call_element* elem =
+      grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
+  if (error != GRPC_ERROR_NONE) {
+    got_initial_metadata(elem, error);
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  grpc_op op;
+  op.op = GRPC_OP_RECV_INITIAL_METADATA;
+  op.flags = 0;
+  op.reserved = nullptr;
+  op.data.recv_initial_metadata.recv_initial_metadata =
+      &calld->initial_metadata;
+  GRPC_CLOSURE_INIT(&calld->got_initial_metadata, got_initial_metadata, elem,
+                    grpc_schedule_on_exec_ctx);
+  grpc_call_start_batch_and_execute(call, &op, 1, &calld->got_initial_metadata);
+}
+
+static grpc_error* server_init_call_elem(grpc_call_element* elem,
+                                         const grpc_call_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  server_ref(chand->server);
+  new (elem->call_data) call_data(elem, *args);
+  return GRPC_ERROR_NONE;
+}
+
+static void server_destroy_call_elem(grpc_call_element* elem,
+                                     const grpc_call_final_info* /*final_info*/,
+                                     grpc_closure* /*ignored*/) {
+  call_data* calld = static_cast<call_data*>(elem->call_data);
+  calld->~call_data();
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  server_unref(chand->server);
+}
+
+static grpc_error* server_init_channel_elem(grpc_channel_element* elem,
+                                            grpc_channel_element_args* args) {
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  GPR_ASSERT(args->is_first);
+  GPR_ASSERT(!args->is_last);
+  chand->server = nullptr;
+  chand->channel = nullptr;
+  chand->next = chand->prev = chand;
+  chand->registered_methods = nullptr;
+  return GRPC_ERROR_NONE;
+}
+
+static void server_destroy_channel_elem(grpc_channel_element* elem) {
+  size_t i;
+  channel_data* chand = static_cast<channel_data*>(elem->channel_data);
+  if (chand->registered_methods) {
+    for (i = 0; i < chand->registered_method_slots; i++) {
+      grpc_slice_unref_internal(chand->registered_methods[i].method);
+      GPR_DEBUG_ASSERT(chand->registered_methods[i].method.refcount ==
+                           &grpc_core::kNoopRefcount ||
+                       chand->registered_methods[i].method.refcount == nullptr);
+      if (chand->registered_methods[i].has_host) {
+        grpc_slice_unref_internal(chand->registered_methods[i].host);
+        GPR_DEBUG_ASSERT(chand->registered_methods[i].host.refcount ==
+                             &grpc_core::kNoopRefcount ||
+                         chand->registered_methods[i].host.refcount == nullptr);
+      }
+    }
+    gpr_free(chand->registered_methods);
+  }
+  if (chand->server) {
+    if (chand->server->channelz_server != nullptr &&
+        chand->channelz_socket_uuid != 0) {
+      chand->server->channelz_server->RemoveChildSocket(
+          chand->channelz_socket_uuid);
+    }
+    gpr_mu_lock(&chand->server->mu_global);
+    chand->next->prev = chand->prev;
+    chand->prev->next = chand->next;
+    chand->next = chand->prev = chand;
+    maybe_finish_shutdown(chand->server);
+    gpr_mu_unlock(&chand->server->mu_global);
+    server_unref(chand->server);
+  }
+}
+
+const grpc_channel_filter grpc_server_top_filter = {
+    server_start_transport_stream_op_batch,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    server_init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    server_destroy_call_elem,
+    sizeof(channel_data),
+    server_init_channel_elem,
+    server_destroy_channel_elem,
+    grpc_channel_next_get_info,
+    "server",
+};
+
+static void register_completion_queue(grpc_server* server,
+                                      grpc_completion_queue* cq,
+                                      void* reserved) {
+  size_t i, n;
+  GPR_ASSERT(!reserved);
+  for (i = 0; i < server->cq_count; i++) {
+    if (server->cqs[i] == cq) return;
+  }
+
+  GRPC_CQ_INTERNAL_REF(cq, "server");
+  n = server->cq_count++;
+  server->cqs = static_cast<grpc_completion_queue**>(gpr_realloc(
+      server->cqs, server->cq_count * sizeof(grpc_completion_queue*)));
+  server->cqs[n] = cq;
+}
+
+void grpc_server_register_completion_queue(grpc_server* server,
+                                           grpc_completion_queue* cq,
+                                           void* reserved) {
+  GRPC_API_TRACE(
+      "grpc_server_register_completion_queue(server=%p, cq=%p, reserved=%p)", 3,
+      (server, cq, reserved));
+
+  auto cq_type = grpc_get_cq_completion_type(cq);
+  if (cq_type != GRPC_CQ_NEXT && cq_type != GRPC_CQ_CALLBACK) {
+    gpr_log(GPR_INFO,
+            "Completion queue of type %d is being registered as a "
+            "server-completion-queue",
+            static_cast<int>(cq_type));
+    /* Ideally we should log an error and abort but ruby-wrapped-language API
+       calls grpc_completion_queue_pluck() on server completion queues */
+  }
+
+  register_completion_queue(server, cq, reserved);
+}
+
+grpc_server* grpc_server_create(const grpc_channel_args* args, void* reserved) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE("grpc_server_create(%p, %p)", 2, (args, reserved));
+
+  grpc_server* server =
+      static_cast<grpc_server*>(gpr_zalloc(sizeof(grpc_server)));
+
+  gpr_mu_init(&server->mu_global);
+  gpr_mu_init(&server->mu_call);
+  gpr_cv_init(&server->starting_cv);
+
+  /* decremented by grpc_server_destroy */
+  new (&server->internal_refcount) grpc_core::RefCount();
+  server->root_channel_data.next = server->root_channel_data.prev =
+      &server->root_channel_data;
+
+  server->channel_args = grpc_channel_args_copy(args);
+
+  const grpc_arg* arg = grpc_channel_args_find(args, GRPC_ARG_ENABLE_CHANNELZ);
+  if (grpc_channel_arg_get_bool(arg, GRPC_ENABLE_CHANNELZ_DEFAULT)) {
+    arg = grpc_channel_args_find(
+        args, GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE);
+    size_t channel_tracer_max_memory = grpc_channel_arg_get_integer(
+        arg,
+        {GRPC_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE_DEFAULT, 0, INT_MAX});
+    server->channelz_server =
+        grpc_core::MakeRefCounted<grpc_core::channelz::ServerNode>(
+            server, channel_tracer_max_memory);
+    server->channelz_server->AddTraceEvent(
+        grpc_core::channelz::ChannelTrace::Severity::Info,
+        grpc_slice_from_static_string("Server created"));
+  }
+
+  if (args != nullptr) {
+    grpc_resource_quota* resource_quota =
+        grpc_resource_quota_from_channel_args(args, false /* create */);
+    if (resource_quota != nullptr) {
+      server->default_resource_user =
+          grpc_resource_user_create(resource_quota, "default");
+    }
+  }
+
+  return server;
+}
+
+static int streq(const char* a, const char* b) {
+  if (a == nullptr && b == nullptr) return 1;
+  if (a == nullptr) return 0;
+  if (b == nullptr) return 0;
+  return 0 == strcmp(a, b);
+}
+
+void* grpc_server_register_method(
+    grpc_server* server, const char* method, const char* host,
+    grpc_server_register_method_payload_handling payload_handling,
+    uint32_t flags) {
+  registered_method* m;
+  GRPC_API_TRACE(
+      "grpc_server_register_method(server=%p, method=%s, host=%s, "
+      "flags=0x%08x)",
+      4, (server, method, host, flags));
+  if (!method) {
+    gpr_log(GPR_ERROR,
+            "grpc_server_register_method method string cannot be NULL");
+    return nullptr;
+  }
+  for (m = server->registered_methods; m; m = m->next) {
+    if (streq(m->method, method) && streq(m->host, host)) {
+      gpr_log(GPR_ERROR, "duplicate registration for %s@%s", method,
+              host ? host : "*");
+      return nullptr;
+    }
+  }
+  if ((flags & ~GRPC_INITIAL_METADATA_USED_MASK) != 0) {
+    gpr_log(GPR_ERROR, "grpc_server_register_method invalid flags 0x%08x",
+            flags);
+    return nullptr;
+  }
+  m = static_cast<registered_method*>(gpr_zalloc(sizeof(registered_method)));
+  m->method = gpr_strdup(method);
+  m->host = gpr_strdup(host);
+  m->next = server->registered_methods;
+  m->payload_handling = payload_handling;
+  m->flags = flags;
+  server->registered_methods = m;
+  return m;
+}
+
+void grpc_server_start(grpc_server* server) {
+  size_t i;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_server_start(server=%p)", 1, (server));
+
+  server->started = true;
+  server->pollset_count = 0;
+  server->pollsets = static_cast<grpc_pollset**>(
+      gpr_malloc(sizeof(grpc_pollset*) * server->cq_count));
+  for (i = 0; i < server->cq_count; i++) {
+    if (grpc_cq_can_listen(server->cqs[i])) {
+      server->pollsets[server->pollset_count++] =
+          grpc_cq_pollset(server->cqs[i]);
+    }
+  }
+  request_matcher_init(&server->unregistered_request_matcher, server);
+  for (registered_method* rm = server->registered_methods; rm; rm = rm->next) {
+    request_matcher_init(&rm->matcher, server);
+  }
+
+  gpr_mu_lock(&server->mu_global);
+  server->starting = true;
+  gpr_mu_unlock(&server->mu_global);
+
+  for (listener* l = server->listeners; l; l = l->next) {
+    l->start(server, l->arg, server->pollsets, server->pollset_count);
+  }
+
+  gpr_mu_lock(&server->mu_global);
+  server->starting = false;
+  gpr_cv_signal(&server->starting_cv);
+  gpr_mu_unlock(&server->mu_global);
+}
+
+void grpc_server_get_pollsets(grpc_server* server, grpc_pollset*** pollsets,
+                              size_t* pollset_count) {
+  *pollset_count = server->pollset_count;
+  *pollsets = server->pollsets;
+}
+
+class ConnectivityWatcher
+    : public grpc_core::AsyncConnectivityStateWatcherInterface {
+ public:
+  explicit ConnectivityWatcher(channel_data* chand) : chand_(chand) {
+    GRPC_CHANNEL_INTERNAL_REF(chand_->channel, "connectivity");
+  }
+
+  ~ConnectivityWatcher() {
+    GRPC_CHANNEL_INTERNAL_UNREF(chand_->channel, "connectivity");
+  }
+
+ private:
+  void OnConnectivityStateChange(grpc_connectivity_state new_state) override {
+    // Don't do anything until we are being shut down.
+    if (new_state != GRPC_CHANNEL_SHUTDOWN) return;
+    // Shut down channel.
+    grpc_server* server = chand_->server;
+    gpr_mu_lock(&server->mu_global);
+    destroy_channel(chand_);
+    gpr_mu_unlock(&server->mu_global);
+  }
+
+  channel_data* chand_;
+};
+
+void grpc_server_setup_transport(
+    grpc_server* s, grpc_transport* transport, grpc_pollset* accepting_pollset,
+    const grpc_channel_args* args,
+    const grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>&
+        socket_node,
+    grpc_resource_user* resource_user) {
+  size_t num_registered_methods;
+  size_t alloc;
+  registered_method* rm;
+  channel_registered_method* crm;
+  grpc_channel* channel;
+  channel_data* chand;
+  uint32_t hash;
+  size_t slots;
+  uint32_t probes;
+  uint32_t max_probes = 0;
+  grpc_transport_op* op = nullptr;
+
+  channel = grpc_channel_create(nullptr, args, GRPC_SERVER_CHANNEL, transport,
+                                resource_user);
+  chand = static_cast<channel_data*>(
+      grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0)
+          ->channel_data);
+  chand->server = s;
+  server_ref(s);
+  chand->channel = channel;
+  if (socket_node != nullptr) {
+    chand->channelz_socket_uuid = socket_node->uuid();
+    s->channelz_server->AddChildSocket(socket_node);
+  } else {
+    chand->channelz_socket_uuid = 0;
+  }
+
+  size_t cq_idx;
+  for (cq_idx = 0; cq_idx < s->cq_count; cq_idx++) {
+    if (grpc_cq_pollset(s->cqs[cq_idx]) == accepting_pollset) break;
+  }
+  if (cq_idx == s->cq_count) {
+    /* completion queue not found: pick a random one to publish new calls to */
+    cq_idx = static_cast<size_t>(rand()) % s->cq_count;
+  }
+  chand->cq_idx = cq_idx;
+
+  num_registered_methods = 0;
+  for (rm = s->registered_methods; rm; rm = rm->next) {
+    num_registered_methods++;
+  }
+  /* build a lookup table phrased in terms of mdstr's in this channels context
+     to quickly find registered methods */
+  if (num_registered_methods > 0) {
+    slots = 2 * num_registered_methods;
+    alloc = sizeof(channel_registered_method) * slots;
+    chand->registered_methods =
+        static_cast<channel_registered_method*>(gpr_zalloc(alloc));
+    for (rm = s->registered_methods; rm; rm = rm->next) {
+      grpc_core::ExternallyManagedSlice host;
+      grpc_core::ExternallyManagedSlice method(rm->method);
+      const bool has_host = rm->host != nullptr;
+      if (has_host) {
+        host = grpc_core::ExternallyManagedSlice(rm->host);
+      }
+      hash = GRPC_MDSTR_KV_HASH(has_host ? host.Hash() : 0, method.Hash());
+      for (probes = 0; chand->registered_methods[(hash + probes) % slots]
+                           .server_registered_method != nullptr;
+           probes++)
+        ;
+      if (probes > max_probes) max_probes = probes;
+      crm = &chand->registered_methods[(hash + probes) % slots];
+      crm->server_registered_method = rm;
+      crm->flags = rm->flags;
+      crm->has_host = has_host;
+      if (has_host) {
+        crm->host = host;
+      }
+      crm->method = method;
+    }
+    GPR_ASSERT(slots <= UINT32_MAX);
+    chand->registered_method_slots = static_cast<uint32_t>(slots);
+    chand->registered_method_max_probes = max_probes;
+  }
+
+  gpr_mu_lock(&s->mu_global);
+  chand->next = &s->root_channel_data;
+  chand->prev = chand->next->prev;
+  chand->next->prev = chand->prev->next = chand;
+  gpr_mu_unlock(&s->mu_global);
+
+  op = grpc_make_transport_op(nullptr);
+  op->set_accept_stream = true;
+  op->set_accept_stream_fn = accept_stream;
+  op->set_accept_stream_user_data = chand;
+  op->start_connectivity_watch.reset(new ConnectivityWatcher(chand));
+  if (gpr_atm_acq_load(&s->shutdown_flag) != 0) {
+    op->disconnect_with_error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server shutdown");
+  }
+  grpc_transport_perform_op(transport, op);
+}
+
+void done_published_shutdown(void* done_arg, grpc_cq_completion* storage) {
+  (void)done_arg;
+  gpr_free(storage);
+}
+
+static void listener_destroy_done(void* s, grpc_error* /*error*/) {
+  grpc_server* server = static_cast<grpc_server*>(s);
+  gpr_mu_lock(&server->mu_global);
+  server->listeners_destroyed++;
+  maybe_finish_shutdown(server);
+  gpr_mu_unlock(&server->mu_global);
+}
+
+/*
+  - Kills all pending requests-for-incoming-RPC-calls (i.e the requests made via
+    grpc_server_request_call and grpc_server_request_registered call will now be
+    cancelled). See 'kill_pending_work_locked()'
+
+  - Shuts down the listeners (i.e the server will no longer listen on the port
+    for new incoming channels).
+
+  - Iterates through all channels on the server and sends shutdown msg (see
+    'channel_broadcaster_shutdown()' for details) to the clients via the
+    transport layer. The transport layer then guarantees the following:
+     -- Sends shutdown to the client (for eg: HTTP2 transport sends GOAWAY)
+     -- If the server has outstanding calls that are in the process, the
+        connection is NOT closed until the server is done with all those calls
+     -- Once, there are no more calls in progress, the channel is closed
+ */
+void grpc_server_shutdown_and_notify(grpc_server* server,
+                                     grpc_completion_queue* cq, void* tag) {
+  listener* l;
+  shutdown_tag* sdt;
+  channel_broadcaster broadcaster;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_server_shutdown_and_notify(server=%p, cq=%p, tag=%p)", 3,
+                 (server, cq, tag));
+
+  /* wait for startup to be finished: locks mu_global */
+  gpr_mu_lock(&server->mu_global);
+  while (server->starting) {
+    gpr_cv_wait(&server->starting_cv, &server->mu_global,
+                gpr_inf_future(GPR_CLOCK_MONOTONIC));
+  }
+
+  /* stay locked, and gather up some stuff to do */
+  GPR_ASSERT(grpc_cq_begin_op(cq, tag));
+  if (server->shutdown_published) {
+    grpc_cq_end_op(cq, tag, GRPC_ERROR_NONE, done_published_shutdown, nullptr,
+                   static_cast<grpc_cq_completion*>(
+                       gpr_malloc(sizeof(grpc_cq_completion))));
+    gpr_mu_unlock(&server->mu_global);
+    return;
+  }
+  server->shutdown_tags = static_cast<shutdown_tag*>(
+      gpr_realloc(server->shutdown_tags,
+                  sizeof(shutdown_tag) * (server->num_shutdown_tags + 1)));
+  sdt = &server->shutdown_tags[server->num_shutdown_tags++];
+  sdt->tag = tag;
+  sdt->cq = cq;
+  if (gpr_atm_acq_load(&server->shutdown_flag)) {
+    gpr_mu_unlock(&server->mu_global);
+    return;
+  }
+
+  server->last_shutdown_message_time = gpr_now(GPR_CLOCK_REALTIME);
+
+  channel_broadcaster_init(server, &broadcaster);
+
+  gpr_atm_rel_store(&server->shutdown_flag, 1);
+
+  /* collect all unregistered then registered calls */
+  gpr_mu_lock(&server->mu_call);
+  kill_pending_work_locked(
+      server, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server Shutdown"));
+  gpr_mu_unlock(&server->mu_call);
+
+  maybe_finish_shutdown(server);
+  gpr_mu_unlock(&server->mu_global);
+
+  /* Shutdown listeners */
+  for (l = server->listeners; l; l = l->next) {
+    GRPC_CLOSURE_INIT(&l->destroy_done, listener_destroy_done, server,
+                      grpc_schedule_on_exec_ctx);
+    l->destroy(server, l->arg, &l->destroy_done);
+    if (server->channelz_server != nullptr && l->socket_uuid != 0) {
+      server->channelz_server->RemoveChildListenSocket(l->socket_uuid);
+    }
+  }
+
+  channel_broadcaster_shutdown(&broadcaster, true /* send_goaway */,
+                               GRPC_ERROR_NONE);
+
+  if (server->default_resource_user != nullptr) {
+    grpc_resource_quota_unref(
+        grpc_resource_user_quota(server->default_resource_user));
+    grpc_resource_user_shutdown(server->default_resource_user);
+    grpc_resource_user_unref(server->default_resource_user);
+  }
+}
+
+void grpc_server_cancel_all_calls(grpc_server* server) {
+  channel_broadcaster broadcaster;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_server_cancel_all_calls(server=%p)", 1, (server));
+
+  gpr_mu_lock(&server->mu_global);
+  channel_broadcaster_init(server, &broadcaster);
+  gpr_mu_unlock(&server->mu_global);
+
+  channel_broadcaster_shutdown(
+      &broadcaster, false /* send_goaway */,
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Cancelling all calls"));
+}
+
+void grpc_server_destroy(grpc_server* server) {
+  listener* l;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+
+  GRPC_API_TRACE("grpc_server_destroy(server=%p)", 1, (server));
+
+  gpr_mu_lock(&server->mu_global);
+  GPR_ASSERT(gpr_atm_acq_load(&server->shutdown_flag) || !server->listeners);
+  GPR_ASSERT(server->listeners_destroyed == num_listeners(server));
+
+  while (server->listeners) {
+    l = server->listeners;
+    server->listeners = l->next;
+    gpr_free(l);
+  }
+
+  gpr_mu_unlock(&server->mu_global);
+
+  server_unref(server);
+}
+
+void grpc_server_add_listener(
+    grpc_server* server, void* listener_arg,
+    void (*start)(grpc_server* server, void* arg, grpc_pollset** pollsets,
+                  size_t pollset_count),
+    void (*destroy)(grpc_server* server, void* arg, grpc_closure* on_done),
+    grpc_core::RefCountedPtr<grpc_core::channelz::ListenSocketNode> node) {
+  listener* l = static_cast<listener*>(gpr_malloc(sizeof(listener)));
+  l->arg = listener_arg;
+  l->start = start;
+  l->destroy = destroy;
+  l->socket_uuid = 0;
+  if (node != nullptr) {
+    l->socket_uuid = node->uuid();
+    if (server->channelz_server != nullptr) {
+      server->channelz_server->AddChildListenSocket(std::move(node));
+    }
+  }
+  l->next = server->listeners;
+  server->listeners = l;
+}
+
+static grpc_call_error queue_call_request(grpc_server* server, size_t cq_idx,
+                                          requested_call* rc) {
+  call_data* calld = nullptr;
+  request_matcher* rm = nullptr;
+  if (gpr_atm_acq_load(&server->shutdown_flag)) {
+    fail_call(server, cq_idx, rc,
+              GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server Shutdown"));
+    return GRPC_CALL_OK;
+  }
+  switch (rc->type) {
+    case BATCH_CALL:
+      rm = &server->unregistered_request_matcher;
+      break;
+    case REGISTERED_CALL:
+      rm = &rc->data.registered.method->matcher;
+      break;
+  }
+  if (rm->requests_per_cq[cq_idx].Push(rc->mpscq_node.get())) {
+    /* this was the first queued request: we need to lock and start
+       matching calls */
+    gpr_mu_lock(&server->mu_call);
+    while ((calld = rm->pending_head) != nullptr) {
+      rc = reinterpret_cast<requested_call*>(rm->requests_per_cq[cq_idx].Pop());
+      if (rc == nullptr) break;
+      rm->pending_head = calld->pending_next;
+      gpr_mu_unlock(&server->mu_call);
+      if (!gpr_atm_full_cas(&calld->state, PENDING, ACTIVATED)) {
+        // Zombied Call
+        GRPC_CLOSURE_INIT(
+            &calld->kill_zombie_closure, kill_zombie,
+            grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0),
+            grpc_schedule_on_exec_ctx);
+        grpc_core::ExecCtx::Run(DEBUG_LOCATION, &calld->kill_zombie_closure,
+                                GRPC_ERROR_NONE);
+      } else {
+        publish_call(server, calld, cq_idx, rc);
+      }
+      gpr_mu_lock(&server->mu_call);
+    }
+    gpr_mu_unlock(&server->mu_call);
+  }
+  return GRPC_CALL_OK;
+}
+
+grpc_call_error grpc_server_request_call(
+    grpc_server* server, grpc_call** call, grpc_call_details* details,
+    grpc_metadata_array* initial_metadata,
+    grpc_completion_queue* cq_bound_to_call,
+    grpc_completion_queue* cq_for_notification, void* tag) {
+  grpc_call_error error;
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  requested_call* rc = static_cast<requested_call*>(gpr_malloc(sizeof(*rc)));
+  GRPC_STATS_INC_SERVER_REQUESTED_CALLS();
+  GRPC_API_TRACE(
+      "grpc_server_request_call("
+      "server=%p, call=%p, details=%p, initial_metadata=%p, "
+      "cq_bound_to_call=%p, cq_for_notification=%p, tag=%p)",
+      7,
+      (server, call, details, initial_metadata, cq_bound_to_call,
+       cq_for_notification, tag));
+  size_t cq_idx;
+  for (cq_idx = 0; cq_idx < server->cq_count; cq_idx++) {
+    if (server->cqs[cq_idx] == cq_for_notification) {
+      break;
+    }
+  }
+  if (cq_idx == server->cq_count) {
+    gpr_free(rc);
+    error = GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE;
+    goto done;
+  }
+  if (grpc_cq_begin_op(cq_for_notification, tag) == false) {
+    gpr_free(rc);
+    error = GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN;
+    goto done;
+  }
+  details->reserved = nullptr;
+  rc->cq_idx = cq_idx;
+  rc->type = BATCH_CALL;
+  rc->server = server;
+  rc->tag = tag;
+  rc->cq_bound_to_call = cq_bound_to_call;
+  rc->call = call;
+  rc->data.batch.details = details;
+  rc->initial_metadata = initial_metadata;
+  error = queue_call_request(server, cq_idx, rc);
+done:
+
+  return error;
+}
+
+grpc_call_error grpc_server_request_registered_call(
+    grpc_server* server, void* rmp, grpc_call** call, gpr_timespec* deadline,
+    grpc_metadata_array* initial_metadata, grpc_byte_buffer** optional_payload,
+    grpc_completion_queue* cq_bound_to_call,
+    grpc_completion_queue* cq_for_notification, void* tag) {
+  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_STATS_INC_SERVER_REQUESTED_CALLS();
+  requested_call* rc = static_cast<requested_call*>(gpr_malloc(sizeof(*rc)));
+  registered_method* rm = static_cast<registered_method*>(rmp);
+  GRPC_API_TRACE(
+      "grpc_server_request_registered_call("
+      "server=%p, rmp=%p, call=%p, deadline=%p, initial_metadata=%p, "
+      "optional_payload=%p, cq_bound_to_call=%p, cq_for_notification=%p, "
+      "tag=%p)",
+      9,
+      (server, rmp, call, deadline, initial_metadata, optional_payload,
+       cq_bound_to_call, cq_for_notification, tag));
+
+  size_t cq_idx;
+  for (cq_idx = 0; cq_idx < server->cq_count; cq_idx++) {
+    if (server->cqs[cq_idx] == cq_for_notification) {
+      break;
+    }
+  }
+  if (cq_idx == server->cq_count) {
+    gpr_free(rc);
+    return GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE;
+  }
+  if ((optional_payload == nullptr) !=
+      (rm->payload_handling == GRPC_SRM_PAYLOAD_NONE)) {
+    gpr_free(rc);
+    return GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH;
+  }
+
+  if (grpc_cq_begin_op(cq_for_notification, tag) == false) {
+    gpr_free(rc);
+    return GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN;
+  }
+  rc->cq_idx = cq_idx;
+  rc->type = REGISTERED_CALL;
+  rc->server = server;
+  rc->tag = tag;
+  rc->cq_bound_to_call = cq_bound_to_call;
+  rc->call = call;
+  rc->data.registered.method = rm;
+  rc->data.registered.deadline = deadline;
+  rc->initial_metadata = initial_metadata;
+  rc->data.registered.optional_payload = optional_payload;
+  return queue_call_request(server, cq_idx, rc);
+}
+
+static void fail_call(grpc_server* server, size_t cq_idx, requested_call* rc,
+                      grpc_error* error) {
+  *rc->call = nullptr;
+  rc->initial_metadata->count = 0;
+  GPR_ASSERT(error != GRPC_ERROR_NONE);
+
+  grpc_cq_end_op(server->cqs[cq_idx], rc->tag, error, done_request_event, rc,
+                 &rc->completion);
+}
+
+const grpc_channel_args* grpc_server_get_channel_args(grpc_server* server) {
+  return server->channel_args;
+}
+
+grpc_resource_user* grpc_server_get_default_resource_user(grpc_server* server) {
+  return server->default_resource_user;
+}
+
+int grpc_server_has_open_connections(grpc_server* server) {
+  int r;
+  gpr_mu_lock(&server->mu_global);
+  r = server->root_channel_data.next != &server->root_channel_data;
+  gpr_mu_unlock(&server->mu_global);
+  return r;
+}
+
+grpc_core::channelz::ServerNode* grpc_server_get_channelz_node(
+    grpc_server* server) {
+  if (server == nullptr) {
+    return nullptr;
+  }
+  return server->channelz_server.get();
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.h
new file mode 100644
index 0000000..2285821
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/server.h	
@@ -0,0 +1,67 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_SERVER_H
+#define GRPC_CORE_LIB_SURFACE_SERVER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/transport/transport.h"
+
+extern const grpc_channel_filter grpc_server_top_filter;
+
+/** Lightweight tracing of server channel state */
+extern grpc_core::TraceFlag grpc_server_channel_trace;
+
+/* Add a listener to the server: when the server starts, it will call start,
+   and when it shuts down, it will call destroy */
+void grpc_server_add_listener(
+    grpc_server* server, void* listener_arg,
+    void (*start)(grpc_server* server, void* arg, grpc_pollset** pollsets,
+                  size_t npollsets),
+    void (*destroy)(grpc_server* server, void* arg, grpc_closure* on_done),
+    grpc_core::RefCountedPtr<grpc_core::channelz::ListenSocketNode> node);
+
+/* Setup a transport - creates a channel stack, binds the transport to the
+   server */
+void grpc_server_setup_transport(
+    grpc_server* server, grpc_transport* transport,
+    grpc_pollset* accepting_pollset, const grpc_channel_args* args,
+    const grpc_core::RefCountedPtr<grpc_core::channelz::SocketNode>&
+        socket_node,
+    grpc_resource_user* resource_user = nullptr);
+
+grpc_core::channelz::ServerNode* grpc_server_get_channelz_node(
+    grpc_server* server);
+
+const grpc_channel_args* grpc_server_get_channel_args(grpc_server* server);
+
+grpc_resource_user* grpc_server_get_default_resource_user(grpc_server* server);
+
+int grpc_server_has_open_connections(grpc_server* server);
+
+/* Do not call this before grpc_server_start. Returns the pollsets and the
+ * number of pollsets via 'pollsets' and 'pollset_count'. */
+void grpc_server_get_pollsets(grpc_server* server, grpc_pollset*** pollsets,
+                              size_t* pollset_count);
+
+#endif /* GRPC_CORE_LIB_SURFACE_SERVER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.cc
new file mode 100644
index 0000000..138f574
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.cc	
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/surface/validate_metadata.h"
+
+static grpc_error* conforms_to(const grpc_slice& slice,
+                               const uint8_t* legal_bits,
+                               const char* err_desc) {
+  const uint8_t* p = GRPC_SLICE_START_PTR(slice);
+  const uint8_t* e = GRPC_SLICE_END_PTR(slice);
+  for (; p != e; p++) {
+    int idx = *p;
+    int byte = idx / 8;
+    int bit = idx % 8;
+    if ((legal_bits[byte] & (1 << bit)) == 0) {
+      grpc_error* error = grpc_error_set_str(
+          grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_desc),
+                             GRPC_ERROR_INT_OFFSET,
+                             p - GRPC_SLICE_START_PTR(slice)),
+          GRPC_ERROR_STR_RAW_BYTES,
+          grpc_dump_slice_to_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII));
+      return error;
+    }
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static int error2int(grpc_error* error) {
+  int r = (error == GRPC_ERROR_NONE);
+  GRPC_ERROR_UNREF(error);
+  return r;
+}
+
+grpc_error* grpc_validate_header_key_is_legal(const grpc_slice& slice) {
+  static const uint8_t legal_header_bits[256 / 8] = {
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0x00, 0x00, 0x00,
+      0x80, 0xfe, 0xff, 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+  if (GRPC_SLICE_LENGTH(slice) == 0) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Metadata keys cannot be zero length");
+  }
+  if (GRPC_SLICE_LENGTH(slice) > UINT32_MAX) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Metadata keys cannot be larger than UINT32_MAX");
+  }
+  if (GRPC_SLICE_START_PTR(slice)[0] == ':') {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Metadata keys cannot start with :");
+  }
+  return conforms_to(slice, legal_header_bits, "Illegal header key");
+}
+
+int grpc_header_key_is_legal(grpc_slice slice) {
+  return error2int(grpc_validate_header_key_is_legal(slice));
+}
+
+grpc_error* grpc_validate_header_nonbin_value_is_legal(
+    const grpc_slice& slice) {
+  static const uint8_t legal_header_bits[256 / 8] = {
+      0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+      0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+  return conforms_to(slice, legal_header_bits, "Illegal header value");
+}
+
+int grpc_header_nonbin_value_is_legal(grpc_slice slice) {
+  return error2int(grpc_validate_header_nonbin_value_is_legal(slice));
+}
+
+int grpc_is_binary_header_internal(const grpc_slice& slice) {
+  return grpc_key_is_binary_header(GRPC_SLICE_START_PTR(slice),
+                                   GRPC_SLICE_LENGTH(slice));
+}
+
+int grpc_is_binary_header(grpc_slice slice) {
+  return grpc_is_binary_header_internal(slice);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.h
new file mode 100644
index 0000000..db3be68
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/validate_metadata.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H
+#define GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include "src/core/lib/iomgr/error.h"
+
+grpc_error* grpc_validate_header_key_is_legal(const grpc_slice& slice);
+grpc_error* grpc_validate_header_nonbin_value_is_legal(const grpc_slice& slice);
+
+int grpc_is_binary_header_internal(const grpc_slice& slice);
+inline int grpc_key_is_binary_header(const uint8_t* buf, size_t length) {
+  if (length < 5) return 0;
+  return 0 == memcmp(buf + length - 4, "-bin", 4);
+}
+inline int grpc_is_refcounted_slice_binary_header(const grpc_slice& slice) {
+  GPR_DEBUG_ASSERT(slice.refcount != nullptr);
+  return grpc_key_is_binary_header(slice.data.refcounted.bytes,
+                                   slice.data.refcounted.length);
+}
+
+#endif /* GRPC_CORE_LIB_SURFACE_VALIDATE_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/version.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/version.cc
new file mode 100644
index 0000000..9b512a8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/surface/version.cc	
@@ -0,0 +1,28 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* This file is autogenerated from:
+   templates/src/core/surface/version.c.template */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+const char* grpc_version_string(void) { return "9.0.0"; }
+
+const char* grpc_g_stands_for(void) { return "galactic"; }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.cc
new file mode 100644
index 0000000..8835e32
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.cc	
@@ -0,0 +1,87 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/bdp_estimator.h"
+
+#include <inttypes.h>
+#include <stdlib.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+grpc_core::TraceFlag grpc_bdp_estimator_trace(false, "bdp_estimator");
+
+namespace grpc_core {
+
+BdpEstimator::BdpEstimator(const char* name)
+    : ping_state_(PingState::UNSCHEDULED),
+      accumulator_(0),
+      estimate_(65536),
+      ping_start_time_(gpr_time_0(GPR_CLOCK_MONOTONIC)),
+      inter_ping_delay_(100.0),  // start at 100ms
+      stable_estimate_count_(0),
+      bw_est_(0),
+      name_(name) {}
+
+grpc_millis BdpEstimator::CompletePing() {
+  gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+  gpr_timespec dt_ts = gpr_time_sub(now, ping_start_time_);
+  double dt = static_cast<double>(dt_ts.tv_sec) +
+              1e-9 * static_cast<double>(dt_ts.tv_nsec);
+  double bw = dt > 0 ? (static_cast<double>(accumulator_) / dt) : 0;
+  int start_inter_ping_delay = inter_ping_delay_;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+    gpr_log(GPR_INFO,
+            "bdp[%s]:complete acc=%" PRId64 " est=%" PRId64
+            " dt=%lf bw=%lfMbs bw_est=%lfMbs",
+            name_, accumulator_, estimate_, dt, bw / 125000.0,
+            bw_est_ / 125000.0);
+  }
+  GPR_ASSERT(ping_state_ == PingState::STARTED);
+  if (accumulator_ > 2 * estimate_ / 3 && bw > bw_est_) {
+    estimate_ = GPR_MAX(accumulator_, estimate_ * 2);
+    bw_est_ = bw;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]: estimate increased to %" PRId64, name_,
+              estimate_);
+    }
+    inter_ping_delay_ /= 2;  // if the ping estimate changes,
+                             // exponentially get faster at probing
+  } else if (inter_ping_delay_ < 10000) {
+    stable_estimate_count_++;
+    if (stable_estimate_count_ >= 2) {
+      inter_ping_delay_ +=
+          100 + static_cast<int>(rand() * 100.0 /
+                                 RAND_MAX);  // if the ping estimate is steady,
+                                             // slowly ramp down the probe time
+    }
+  }
+  if (start_inter_ping_delay != inter_ping_delay_) {
+    stable_estimate_count_ = 0;
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]:update_inter_time to %dms", name_,
+              inter_ping_delay_);
+    }
+  }
+  ping_state_ = PingState::UNSCHEDULED;
+  accumulator_ = 0;
+  return grpc_core::ExecCtx::Get()->Now() + inter_ping_delay_;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.h
new file mode 100644
index 0000000..6dc4d6b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/bdp_estimator.h	
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H
+#define GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+extern grpc_core::TraceFlag grpc_bdp_estimator_trace;
+
+namespace grpc_core {
+
+class BdpEstimator {
+ public:
+  explicit BdpEstimator(const char* name);
+  ~BdpEstimator() {}
+
+  int64_t EstimateBdp() const { return estimate_; }
+  double EstimateBandwidth() const { return bw_est_; }
+
+  void AddIncomingBytes(int64_t num_bytes) { accumulator_ += num_bytes; }
+
+  // Schedule a ping: call in response to receiving a true from
+  // grpc_bdp_estimator_add_incoming_bytes once a ping has been scheduled by a
+  // transport (but not necessarily started)
+  void SchedulePing() {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]:sched acc=%" PRId64 " est=%" PRId64, name_,
+              accumulator_, estimate_);
+    }
+    GPR_ASSERT(ping_state_ == PingState::UNSCHEDULED);
+    ping_state_ = PingState::SCHEDULED;
+    accumulator_ = 0;
+  }
+
+  // Start a ping: call after calling grpc_bdp_estimator_schedule_ping and
+  // once
+  // the ping is on the wire
+  void StartPing() {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_bdp_estimator_trace)) {
+      gpr_log(GPR_INFO, "bdp[%s]:start acc=%" PRId64 " est=%" PRId64, name_,
+              accumulator_, estimate_);
+    }
+    GPR_ASSERT(ping_state_ == PingState::SCHEDULED);
+    ping_state_ = PingState::STARTED;
+    accumulator_ = 0;
+    ping_start_time_ = gpr_now(GPR_CLOCK_MONOTONIC);
+  }
+
+  // Completes a previously started ping, returns when to schedule the next one
+  grpc_millis CompletePing();
+
+ private:
+  enum class PingState { UNSCHEDULED, SCHEDULED, STARTED };
+
+  PingState ping_state_;
+  int64_t accumulator_;
+  int64_t estimate_;
+  // when was the current ping started?
+  gpr_timespec ping_start_time_;
+  int inter_ping_delay_;
+  int stable_estimate_count_;
+  double bw_est_;
+  const char* name_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.cc
new file mode 100644
index 0000000..82f34ca
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.cc	
@@ -0,0 +1,158 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/byte_stream.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+//
+// SliceBufferByteStream
+//
+
+SliceBufferByteStream::SliceBufferByteStream(grpc_slice_buffer* slice_buffer,
+                                             uint32_t flags)
+    : ByteStream(static_cast<uint32_t>(slice_buffer->length), flags) {
+  GPR_ASSERT(slice_buffer->length <= UINT32_MAX);
+  grpc_slice_buffer_init(&backing_buffer_);
+  grpc_slice_buffer_swap(slice_buffer, &backing_buffer_);
+}
+
+SliceBufferByteStream::~SliceBufferByteStream() {}
+
+void SliceBufferByteStream::Orphan() {
+  grpc_slice_buffer_destroy_internal(&backing_buffer_);
+  GRPC_ERROR_UNREF(shutdown_error_);
+  // Note: We do not actually delete the object here, since
+  // SliceBufferByteStream is usually allocated as part of a larger
+  // object and has an OrphanablePtr of itself passed down through the
+  // filter stack.
+}
+
+bool SliceBufferByteStream::Next(size_t /*max_size_hint*/,
+                                 grpc_closure* /*on_complete*/) {
+  GPR_DEBUG_ASSERT(backing_buffer_.count > 0);
+  return true;
+}
+
+grpc_error* SliceBufferByteStream::Pull(grpc_slice* slice) {
+  if (GPR_UNLIKELY(shutdown_error_ != GRPC_ERROR_NONE)) {
+    return GRPC_ERROR_REF(shutdown_error_);
+  }
+  *slice = grpc_slice_buffer_take_first(&backing_buffer_);
+  return GRPC_ERROR_NONE;
+}
+
+void SliceBufferByteStream::Shutdown(grpc_error* error) {
+  GRPC_ERROR_UNREF(shutdown_error_);
+  shutdown_error_ = error;
+}
+
+//
+// ByteStreamCache
+//
+
+ByteStreamCache::ByteStreamCache(OrphanablePtr<ByteStream> underlying_stream)
+    : underlying_stream_(std::move(underlying_stream)),
+      length_(underlying_stream_->length()),
+      flags_(underlying_stream_->flags()) {
+  grpc_slice_buffer_init(&cache_buffer_);
+}
+
+ByteStreamCache::~ByteStreamCache() { Destroy(); }
+
+void ByteStreamCache::Destroy() {
+  underlying_stream_.reset();
+  if (cache_buffer_.length > 0) {
+    grpc_slice_buffer_destroy_internal(&cache_buffer_);
+  }
+}
+
+//
+// ByteStreamCache::CachingByteStream
+//
+
+ByteStreamCache::CachingByteStream::CachingByteStream(ByteStreamCache* cache)
+    : ByteStream(cache->length_, cache->flags_), cache_(cache) {}
+
+ByteStreamCache::CachingByteStream::~CachingByteStream() {}
+
+void ByteStreamCache::CachingByteStream::Orphan() {
+  GRPC_ERROR_UNREF(shutdown_error_);
+  // Note: We do not actually delete the object here, since
+  // CachingByteStream is usually allocated as part of a larger
+  // object and has an OrphanablePtr of itself passed down through the
+  // filter stack.
+}
+
+bool ByteStreamCache::CachingByteStream::Next(size_t max_size_hint,
+                                              grpc_closure* on_complete) {
+  if (shutdown_error_ != GRPC_ERROR_NONE) return true;
+  if (cursor_ < cache_->cache_buffer_.count) return true;
+  GPR_ASSERT(cache_->underlying_stream_ != nullptr);
+  return cache_->underlying_stream_->Next(max_size_hint, on_complete);
+}
+
+grpc_error* ByteStreamCache::CachingByteStream::Pull(grpc_slice* slice) {
+  if (shutdown_error_ != GRPC_ERROR_NONE) {
+    return GRPC_ERROR_REF(shutdown_error_);
+  }
+  if (cursor_ < cache_->cache_buffer_.count) {
+    *slice = grpc_slice_ref_internal(cache_->cache_buffer_.slices[cursor_]);
+    ++cursor_;
+    offset_ += GRPC_SLICE_LENGTH(*slice);
+    return GRPC_ERROR_NONE;
+  }
+  GPR_ASSERT(cache_->underlying_stream_ != nullptr);
+  grpc_error* error = cache_->underlying_stream_->Pull(slice);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_slice_buffer_add(&cache_->cache_buffer_,
+                          grpc_slice_ref_internal(*slice));
+    ++cursor_;
+    offset_ += GRPC_SLICE_LENGTH(*slice);
+    // Orphan the underlying stream if it's been drained.
+    if (offset_ == cache_->underlying_stream_->length()) {
+      cache_->underlying_stream_.reset();
+    }
+  }
+  return error;
+}
+
+void ByteStreamCache::CachingByteStream::Shutdown(grpc_error* error) {
+  GRPC_ERROR_UNREF(shutdown_error_);
+  shutdown_error_ = GRPC_ERROR_REF(error);
+  if (cache_->underlying_stream_ != nullptr) {
+    cache_->underlying_stream_->Shutdown(error);
+  }
+}
+
+void ByteStreamCache::CachingByteStream::Reset() {
+  cursor_ = 0;
+  offset_ = 0;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.h
new file mode 100644
index 0000000..6988ab8
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/byte_stream.h	
@@ -0,0 +1,160 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
+#define GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/closure.h"
+
+/** Internal bit flag for grpc_begin_message's \a flags signaling the use of
+ * compression for the message */
+#define GRPC_WRITE_INTERNAL_COMPRESS (0x80000000u)
+/** Mask of all valid internal flags. */
+#define GRPC_WRITE_INTERNAL_USED_MASK (GRPC_WRITE_INTERNAL_COMPRESS)
+
+namespace grpc_core {
+
+class ByteStream : public Orphanable {
+ public:
+  virtual ~ByteStream() {}
+
+  // Returns true if the bytes are available immediately (in which case
+  // on_complete will not be called), or false if the bytes will be available
+  // asynchronously (in which case on_complete will be called when they
+  // are available). Should not be called if there is no data left on the
+  // stream.
+  //
+  // max_size_hint can be set as a hint as to the maximum number
+  // of bytes that would be acceptable to read.
+  virtual bool Next(size_t max_size_hint, grpc_closure* on_complete) = 0;
+
+  // Returns the next slice in the byte stream when it is available, as
+  // indicated by Next().
+  //
+  // Once a slice is returned into *slice, it is owned by the caller.
+  virtual grpc_error* Pull(grpc_slice* slice) = 0;
+
+  // Shuts down the byte stream.
+  //
+  // If there is a pending call to on_complete from Next(), it will be
+  // invoked with the error passed to Shutdown().
+  //
+  // The next call to Pull() (if any) will return the error passed to
+  // Shutdown().
+  virtual void Shutdown(grpc_error* error) = 0;
+
+  uint32_t length() const { return length_; }
+  uint32_t flags() const { return flags_; }
+
+  void set_flags(uint32_t flags) { flags_ = flags; }
+
+ protected:
+  ByteStream(uint32_t length, uint32_t flags)
+      : length_(length), flags_(flags) {}
+
+ private:
+  const uint32_t length_;
+  uint32_t flags_;
+};
+
+//
+// SliceBufferByteStream
+//
+// A ByteStream that wraps a slice buffer.
+//
+
+class SliceBufferByteStream : public ByteStream {
+ public:
+  // Removes all slices in slice_buffer, leaving it empty.
+  SliceBufferByteStream(grpc_slice_buffer* slice_buffer, uint32_t flags);
+
+  ~SliceBufferByteStream();
+
+  void Orphan() override;
+
+  bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+  grpc_error* Pull(grpc_slice* slice) override;
+  void Shutdown(grpc_error* error) override;
+
+ private:
+  grpc_error* shutdown_error_ = GRPC_ERROR_NONE;
+  grpc_slice_buffer backing_buffer_;
+};
+
+//
+// CachingByteStream
+//
+// A ByteStream that that wraps an underlying byte stream but caches
+// the resulting slices in a slice buffer.  If an initial attempt fails
+// without fully draining the underlying stream, a new caching stream
+// can be created from the same underlying cache, in which case it will
+// return whatever is in the backing buffer before continuing to read the
+// underlying stream.
+//
+// NOTE: No synchronization is done, so it is not safe to have multiple
+// CachingByteStreams simultaneously drawing from the same underlying
+// ByteStreamCache at the same time.
+//
+
+class ByteStreamCache {
+ public:
+  class CachingByteStream : public ByteStream {
+   public:
+    explicit CachingByteStream(ByteStreamCache* cache);
+
+    ~CachingByteStream();
+
+    void Orphan() override;
+
+    bool Next(size_t max_size_hint, grpc_closure* on_complete) override;
+    grpc_error* Pull(grpc_slice* slice) override;
+    void Shutdown(grpc_error* error) override;
+
+    // Resets the byte stream to the start of the underlying stream.
+    void Reset();
+
+   private:
+    ByteStreamCache* cache_;
+    size_t cursor_ = 0;
+    size_t offset_ = 0;
+    grpc_error* shutdown_error_ = GRPC_ERROR_NONE;
+  };
+
+  explicit ByteStreamCache(OrphanablePtr<ByteStream> underlying_stream);
+
+  ~ByteStreamCache();
+
+  // Must not be destroyed while still in use by a CachingByteStream.
+  void Destroy();
+
+  grpc_slice_buffer* cache_buffer() { return &cache_buffer_; }
+
+ private:
+  OrphanablePtr<ByteStream> underlying_stream_;
+  uint32_t length_;
+  uint32_t flags_;
+  grpc_slice_buffer cache_buffer_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.cc
new file mode 100644
index 0000000..16da01d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.cc	
@@ -0,0 +1,179 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/connectivity_state.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+TraceFlag grpc_connectivity_state_trace(false, "connectivity_state");
+
+const char* ConnectivityStateName(grpc_connectivity_state state) {
+  switch (state) {
+    case GRPC_CHANNEL_IDLE:
+      return "IDLE";
+    case GRPC_CHANNEL_CONNECTING:
+      return "CONNECTING";
+    case GRPC_CHANNEL_READY:
+      return "READY";
+    case GRPC_CHANNEL_TRANSIENT_FAILURE:
+      return "TRANSIENT_FAILURE";
+    case GRPC_CHANNEL_SHUTDOWN:
+      return "SHUTDOWN";
+  }
+  GPR_UNREACHABLE_CODE(return "UNKNOWN");
+}
+
+//
+// AsyncConnectivityStateWatcherInterface
+//
+
+// A fire-and-forget class to asynchronously deliver a connectivity
+// state notification to a watcher.
+class AsyncConnectivityStateWatcherInterface::Notifier {
+ public:
+  Notifier(RefCountedPtr<AsyncConnectivityStateWatcherInterface> watcher,
+           grpc_connectivity_state state, Combiner* combiner)
+      : watcher_(std::move(watcher)), state_(state) {
+    if (combiner != nullptr) {
+      combiner->Run(
+          GRPC_CLOSURE_INIT(&closure_, SendNotification, this, nullptr),
+          GRPC_ERROR_NONE);
+    } else {
+      GRPC_CLOSURE_INIT(&closure_, SendNotification, this,
+                        grpc_schedule_on_exec_ctx);
+      ExecCtx::Run(DEBUG_LOCATION, &closure_, GRPC_ERROR_NONE);
+    }
+  }
+
+ private:
+  static void SendNotification(void* arg, grpc_error* /*ignored*/) {
+    Notifier* self = static_cast<Notifier*>(arg);
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+      gpr_log(GPR_INFO, "watcher %p: delivering async notification for %s",
+              self->watcher_.get(), ConnectivityStateName(self->state_));
+    }
+    self->watcher_->OnConnectivityStateChange(self->state_);
+    delete self;
+  }
+
+  RefCountedPtr<AsyncConnectivityStateWatcherInterface> watcher_;
+  const grpc_connectivity_state state_;
+  grpc_closure closure_;
+};
+
+void AsyncConnectivityStateWatcherInterface::Notify(
+    grpc_connectivity_state state) {
+  new Notifier(Ref(), state, combiner_);  // Deletes itself when done.
+}
+
+//
+// ConnectivityStateTracker
+//
+
+ConnectivityStateTracker::~ConnectivityStateTracker() {
+  grpc_connectivity_state current_state = state_.Load(MemoryOrder::RELAXED);
+  if (current_state == GRPC_CHANNEL_SHUTDOWN) return;
+  for (const auto& p : watchers_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+      gpr_log(GPR_INFO,
+              "ConnectivityStateTracker %s[%p]: notifying watcher %p: %s -> %s",
+              name_, this, p.first, ConnectivityStateName(current_state),
+              ConnectivityStateName(GRPC_CHANNEL_SHUTDOWN));
+    }
+    p.second->Notify(GRPC_CHANNEL_SHUTDOWN);
+  }
+}
+
+void ConnectivityStateTracker::AddWatcher(
+    grpc_connectivity_state initial_state,
+    OrphanablePtr<ConnectivityStateWatcherInterface> watcher) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+    gpr_log(GPR_INFO, "ConnectivityStateTracker %s[%p]: add watcher %p", name_,
+            this, watcher.get());
+  }
+  grpc_connectivity_state current_state = state_.Load(MemoryOrder::RELAXED);
+  if (initial_state != current_state) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+      gpr_log(GPR_INFO,
+              "ConnectivityStateTracker %s[%p]: notifying watcher %p: %s -> %s",
+              name_, this, watcher.get(), ConnectivityStateName(initial_state),
+              ConnectivityStateName(current_state));
+    }
+    watcher->Notify(current_state);
+  }
+  // If we're in state SHUTDOWN, don't add the watcher, so that it will
+  // be orphaned immediately.
+  if (current_state != GRPC_CHANNEL_SHUTDOWN) {
+    watchers_.insert(std::make_pair(watcher.get(), std::move(watcher)));
+  }
+}
+
+void ConnectivityStateTracker::RemoveWatcher(
+    ConnectivityStateWatcherInterface* watcher) {
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+    gpr_log(GPR_INFO, "ConnectivityStateTracker %s[%p]: remove watcher %p",
+            name_, this, watcher);
+  }
+  watchers_.erase(watcher);
+}
+
+void ConnectivityStateTracker::SetState(grpc_connectivity_state state,
+                                        const char* reason) {
+  grpc_connectivity_state current_state = state_.Load(MemoryOrder::RELAXED);
+  if (state == current_state) return;
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+    gpr_log(GPR_INFO, "ConnectivityStateTracker %s[%p]: %s -> %s (%s)", name_,
+            this, ConnectivityStateName(current_state),
+            ConnectivityStateName(state), reason);
+  }
+  state_.Store(state, MemoryOrder::RELAXED);
+  for (const auto& p : watchers_) {
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+      gpr_log(GPR_INFO,
+              "ConnectivityStateTracker %s[%p]: notifying watcher %p: %s -> %s",
+              name_, this, p.first, ConnectivityStateName(current_state),
+              ConnectivityStateName(state));
+    }
+    p.second->Notify(state);
+  }
+  // If the new state is SHUTDOWN, orphan all of the watchers.  This
+  // avoids the need for the callers to explicitly cancel them.
+  if (state == GRPC_CHANNEL_SHUTDOWN) watchers_.clear();
+}
+
+grpc_connectivity_state ConnectivityStateTracker::state() const {
+  grpc_connectivity_state state = state_.Load(MemoryOrder::RELAXED);
+  if (GRPC_TRACE_FLAG_ENABLED(grpc_connectivity_state_trace)) {
+    gpr_log(GPR_INFO, "ConnectivityStateTracker %s[%p]: get current state: %s",
+            name_, this, ConnectivityStateName(state));
+  }
+  return state;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.h
new file mode 100644
index 0000000..b2add5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/connectivity_state.h	
@@ -0,0 +1,129 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
+#define GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+namespace grpc_core {
+
+extern TraceFlag grpc_connectivity_state_trace;
+
+// Enum to string conversion.
+const char* ConnectivityStateName(grpc_connectivity_state state);
+
+// Interface for watching connectivity state.
+// Subclasses must implement the Notify() method.
+//
+// Note: Most callers will want to use
+// AsyncConnectivityStateWatcherInterface instead.
+class ConnectivityStateWatcherInterface
+    : public InternallyRefCounted<ConnectivityStateWatcherInterface> {
+ public:
+  virtual ~ConnectivityStateWatcherInterface() = default;
+
+  // Notifies the watcher that the state has changed to new_state.
+  virtual void Notify(grpc_connectivity_state new_state) = 0;
+
+  void Orphan() override { Unref(); }
+};
+
+// An alternative watcher interface that performs notifications via an
+// asynchronous callback scheduled on the ExecCtx.
+// Subclasses must implement the OnConnectivityStateChange() method.
+class AsyncConnectivityStateWatcherInterface
+    : public ConnectivityStateWatcherInterface {
+ public:
+  virtual ~AsyncConnectivityStateWatcherInterface() = default;
+
+  // Schedules a closure on the ExecCtx to invoke
+  // OnConnectivityStateChange() asynchronously.
+  void Notify(grpc_connectivity_state new_state) override final;
+
+ protected:
+  class Notifier;
+
+  // If \a combiner is nullptr, then the notification will be scheduled on the
+  // ExecCtx.
+  explicit AsyncConnectivityStateWatcherInterface(Combiner* combiner = nullptr)
+      : combiner_(combiner) {}
+
+  // Invoked asynchronously when Notify() is called.
+  virtual void OnConnectivityStateChange(grpc_connectivity_state new_state) = 0;
+
+ private:
+  Combiner* combiner_;
+};
+
+// Tracks connectivity state.  Maintains a list of watchers that are
+// notified whenever the state changes.
+//
+// Note that once the state becomes SHUTDOWN, watchers will be notified
+// and then automatically orphaned (i.e., RemoveWatcher() does not need
+// to be called).
+class ConnectivityStateTracker {
+ public:
+  ConnectivityStateTracker(const char* name,
+                           grpc_connectivity_state state = GRPC_CHANNEL_IDLE)
+      : name_(name), state_(state) {}
+
+  ~ConnectivityStateTracker();
+
+  // Adds a watcher.
+  // If the current state is different than initial_state, the watcher
+  // will be notified immediately.  Otherwise, it will be notified
+  // whenever the state changes.
+  // Not thread safe; access must be serialized with an external lock.
+  void AddWatcher(grpc_connectivity_state initial_state,
+                  OrphanablePtr<ConnectivityStateWatcherInterface> watcher);
+
+  // Removes a watcher.  The watcher will be orphaned.
+  // Not thread safe; access must be serialized with an external lock.
+  void RemoveWatcher(ConnectivityStateWatcherInterface* watcher);
+
+  // Sets connectivity state.
+  // Not thread safe; access must be serialized with an external lock.
+  void SetState(grpc_connectivity_state state, const char* reason);
+
+  // Gets the current state.
+  // Thread safe; no need to use an external lock.
+  grpc_connectivity_state state() const;
+
+ private:
+  const char* name_;
+  Atomic<grpc_connectivity_state> state_;
+  // TODO(roth): Once we can use C++-14 heterogeneous lookups, this can
+  // be a set instead of a map.
+  std::map<ConnectivityStateWatcherInterface*,
+           OrphanablePtr<ConnectivityStateWatcherInterface>>
+      watchers_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.cc
new file mode 100644
index 0000000..78a324b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.cc	
@@ -0,0 +1,141 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/error_utils.h"
+
+#include <grpc/support/string_util.h>
+#include "src/core/lib/iomgr/error_internal.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/status_conversion.h"
+
+static grpc_error* recursively_find_error_with_field(grpc_error* error,
+                                                     grpc_error_ints which) {
+  intptr_t unused;
+  // If the error itself has a status code, return it.
+  if (grpc_error_get_int(error, which, &unused)) {
+    return error;
+  }
+  if (grpc_error_is_special(error)) return nullptr;
+  // Otherwise, search through its children.
+  uint8_t slot = error->first_err;
+  while (slot != UINT8_MAX) {
+    grpc_linked_error* lerr =
+        reinterpret_cast<grpc_linked_error*>(error->arena + slot);
+    grpc_error* result = recursively_find_error_with_field(lerr->err, which);
+    if (result) return result;
+    slot = lerr->next;
+  }
+  return nullptr;
+}
+
+void grpc_error_get_status(grpc_error* error, grpc_millis deadline,
+                           grpc_status_code* code, grpc_slice* slice,
+                           grpc_http2_error_code* http_error,
+                           const char** error_string) {
+  // Fast path: We expect no error.
+  if (GPR_LIKELY(error == GRPC_ERROR_NONE)) {
+    if (code != nullptr) *code = GRPC_STATUS_OK;
+    if (slice != nullptr) {
+      // Normally, we call grpc_error_get_str(
+      //   error, GRPC_ERROR_STR_GRPC_MESSAGE, slice).
+      // We can fastpath since we know that:
+      // 1) Error is null
+      // 2) which == GRPC_ERROR_STR_GRPC_MESSAGE
+      // 3) The resulting slice is statically known.
+      // 4) Said resulting slice is of length 0 ("").
+      // This means 3 movs, instead of 10s of instructions and a strlen.
+      *slice = grpc_core::ExternallyManagedSlice("");
+    }
+    if (http_error != nullptr) {
+      *http_error = GRPC_HTTP2_NO_ERROR;
+    }
+    return;
+  }
+
+  // Start with the parent error and recurse through the tree of children
+  // until we find the first one that has a status code.
+  grpc_error* found_error =
+      recursively_find_error_with_field(error, GRPC_ERROR_INT_GRPC_STATUS);
+  if (found_error == nullptr) {
+    /// If no grpc-status exists, retry through the tree to find a http2 error
+    /// code
+    found_error =
+        recursively_find_error_with_field(error, GRPC_ERROR_INT_HTTP2_ERROR);
+  }
+
+  // If we found an error with a status code above, use that; otherwise,
+  // fall back to using the parent error.
+  if (found_error == nullptr) found_error = error;
+
+  grpc_status_code status = GRPC_STATUS_UNKNOWN;
+  intptr_t integer;
+  if (grpc_error_get_int(found_error, GRPC_ERROR_INT_GRPC_STATUS, &integer)) {
+    status = static_cast<grpc_status_code>(integer);
+  } else if (grpc_error_get_int(found_error, GRPC_ERROR_INT_HTTP2_ERROR,
+                                &integer)) {
+    status = grpc_http2_error_to_grpc_status(
+        static_cast<grpc_http2_error_code>(integer), deadline);
+  }
+  if (code != nullptr) *code = status;
+
+  if (error_string != nullptr && status != GRPC_STATUS_OK) {
+    *error_string = gpr_strdup(grpc_error_string(error));
+  }
+
+  if (http_error != nullptr) {
+    if (grpc_error_get_int(found_error, GRPC_ERROR_INT_HTTP2_ERROR, &integer)) {
+      *http_error = static_cast<grpc_http2_error_code>(integer);
+    } else if (grpc_error_get_int(found_error, GRPC_ERROR_INT_GRPC_STATUS,
+                                  &integer)) {
+      *http_error =
+          grpc_status_to_http2_error(static_cast<grpc_status_code>(integer));
+    } else {
+      *http_error = found_error == GRPC_ERROR_NONE ? GRPC_HTTP2_NO_ERROR
+                                                   : GRPC_HTTP2_INTERNAL_ERROR;
+    }
+  }
+
+  // If the error has a status message, use it.  Otherwise, fall back to
+  // the error description.
+  if (slice != nullptr) {
+    if (!grpc_error_get_str(found_error, GRPC_ERROR_STR_GRPC_MESSAGE, slice)) {
+      if (!grpc_error_get_str(found_error, GRPC_ERROR_STR_DESCRIPTION, slice)) {
+        *slice = grpc_slice_from_static_string("unknown error");
+      }
+    }
+  }
+}
+
+bool grpc_error_has_clear_grpc_status(grpc_error* error) {
+  intptr_t unused;
+  if (grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, &unused)) {
+    return true;
+  }
+  uint8_t slot = error->first_err;
+  while (slot != UINT8_MAX) {
+    grpc_linked_error* lerr =
+        reinterpret_cast<grpc_linked_error*>(error->arena + slot);
+    if (grpc_error_has_clear_grpc_status(lerr->err)) {
+      return true;
+    }
+    slot = lerr->next;
+  }
+  return false;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.h
new file mode 100644
index 0000000..9a46267
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/error_utils.h	
@@ -0,0 +1,46 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H
+#define GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+/// A utility function to get the status code and message to be returned
+/// to the application.  If not set in the top-level message, looks
+/// through child errors until it finds the first one with these attributes.
+/// All attributes are pulled from the same child error. error_string will
+/// be populated with the entire error string. If any of the attributes (code,
+/// msg, http_status, error_string) are unneeded, they can be passed as
+/// NULL.
+void grpc_error_get_status(grpc_error* error, grpc_millis deadline,
+                           grpc_status_code* code, grpc_slice* slice,
+                           grpc_http2_error_code* http_status,
+                           const char** error_string);
+
+/// A utility function to check whether there is a clear status code that
+/// doesn't need to be guessed in \a error. This means that \a error or some
+/// child has GRPC_ERROR_INT_GRPC_STATUS set, or that it is GRPC_ERROR_NONE or
+/// GRPC_ERROR_CANCELLED
+bool grpc_error_has_clear_grpc_status(grpc_error* error);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_ERROR_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/http2_errors.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/http2_errors.h
new file mode 100644
index 0000000..d412c5d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/http2_errors.h	
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H
+#define GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H
+
+/* error codes for RST_STREAM from http2 draft 14 section 7 */
+typedef enum {
+  GRPC_HTTP2_NO_ERROR = 0x0,
+  GRPC_HTTP2_PROTOCOL_ERROR = 0x1,
+  GRPC_HTTP2_INTERNAL_ERROR = 0x2,
+  GRPC_HTTP2_FLOW_CONTROL_ERROR = 0x3,
+  GRPC_HTTP2_SETTINGS_TIMEOUT = 0x4,
+  GRPC_HTTP2_STREAM_CLOSED = 0x5,
+  GRPC_HTTP2_FRAME_SIZE_ERROR = 0x6,
+  GRPC_HTTP2_REFUSED_STREAM = 0x7,
+  GRPC_HTTP2_CANCEL = 0x8,
+  GRPC_HTTP2_COMPRESSION_ERROR = 0x9,
+  GRPC_HTTP2_CONNECT_ERROR = 0xa,
+  GRPC_HTTP2_ENHANCE_YOUR_CALM = 0xb,
+  GRPC_HTTP2_INADEQUATE_SECURITY = 0xc,
+  /* force use of a default clause */
+  GRPC_HTTP2__ERROR_DO_NOT_USE = -1
+} grpc_http2_error_code;
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_HTTP2_ERRORS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.cc
new file mode 100644
index 0000000..9a6645c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.cc	
@@ -0,0 +1,679 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/metadata.h"
+
+#include <assert.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <grpc/compression.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/murmur_hash.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+using grpc_core::AllocatedMetadata;
+using grpc_core::InternedMetadata;
+using grpc_core::StaticMetadata;
+using grpc_core::UserData;
+
+/* There are two kinds of mdelem and mdstr instances.
+ * Static instances are declared in static_metadata.{h,c} and
+ * are initialized by grpc_mdctx_global_init().
+ * Dynamic instances are stored in hash tables on grpc_mdctx, and are backed
+ * by internal_string and internal_element structures.
+ * Internal helper functions here-in (is_mdstr_static, is_mdelem_static) are
+ * used to determine which kind of element a pointer refers to.
+ */
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_metadata(false, "metadata");
+
+#ifndef NDEBUG
+#define DEBUG_ARGS , const char *file, int line
+#define FWD_DEBUG_ARGS file, line
+
+void grpc_mdelem_trace_ref(void* md, const grpc_slice& key,
+                           const grpc_slice& value, intptr_t refcnt,
+                           const char* file, int line) {
+  if (grpc_trace_metadata.enabled()) {
+    char* key_str = grpc_slice_to_c_string(key);
+    char* value_str = grpc_slice_to_c_string(value);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "mdelem   REF:%p:%" PRIdPTR "->%" PRIdPTR ": '%s' = '%s'", md,
+            refcnt, refcnt + 1, key_str, value_str);
+    gpr_free(key_str);
+    gpr_free(value_str);
+  }
+}
+
+void grpc_mdelem_trace_unref(void* md, const grpc_slice& key,
+                             const grpc_slice& value, intptr_t refcnt,
+                             const char* file, int line) {
+  if (grpc_trace_metadata.enabled()) {
+    char* key_str = grpc_slice_to_c_string(key);
+    char* value_str = grpc_slice_to_c_string(value);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "mdelem   UNREF:%p:%" PRIdPTR "->%" PRIdPTR ": '%s' = '%s'", md,
+            refcnt, refcnt - 1, key_str, value_str);
+    gpr_free(key_str);
+    gpr_free(value_str);
+  }
+}
+
+#else  // ifndef NDEBUG
+#define DEBUG_ARGS
+#define FWD_DEBUG_ARGS
+#endif  // ifndef NDEBUG
+
+#define INITIAL_SHARD_CAPACITY 8
+#define LOG2_SHARD_COUNT 4
+#define SHARD_COUNT ((size_t)(1 << LOG2_SHARD_COUNT))
+
+#define TABLE_IDX(hash, capacity) (((hash) >> (LOG2_SHARD_COUNT)) % (capacity))
+#define SHARD_IDX(hash) ((hash) & ((1 << (LOG2_SHARD_COUNT)) - 1))
+
+void StaticMetadata::HashInit() {
+  uint32_t k_hash = grpc_slice_hash_internal(kv_.key);
+  uint32_t v_hash = grpc_slice_hash_internal(kv_.value);
+  hash_ = GRPC_MDSTR_KV_HASH(k_hash, v_hash);
+}
+
+AllocatedMetadata::AllocatedMetadata(const grpc_slice& key,
+                                     const grpc_slice& value)
+    : RefcountedMdBase(grpc_slice_ref_internal(key),
+                       grpc_slice_ref_internal(value)) {
+#ifndef NDEBUG
+  TraceAtStart("ALLOC_MD");
+#endif
+}
+
+AllocatedMetadata::AllocatedMetadata(const grpc_slice& key,
+                                     const grpc_slice& value, const NoRefKey*)
+    : RefcountedMdBase(key, grpc_slice_ref_internal(value)) {
+#ifndef NDEBUG
+  TraceAtStart("ALLOC_MD_NOREF_KEY");
+#endif
+}
+
+AllocatedMetadata::AllocatedMetadata(
+    const grpc_core::ManagedMemorySlice& key,
+    const grpc_core::UnmanagedMemorySlice& value)
+    : RefcountedMdBase(key, value) {
+#ifndef NDEBUG
+  TraceAtStart("ALLOC_MD_NOREF_KEY_VAL");
+#endif
+}
+
+AllocatedMetadata::AllocatedMetadata(
+    const grpc_core::ExternallyManagedSlice& key,
+    const grpc_core::UnmanagedMemorySlice& value)
+    : RefcountedMdBase(key, value) {
+#ifndef NDEBUG
+  TraceAtStart("ALLOC_MD_NOREF_KEY_VAL");
+#endif
+}
+
+AllocatedMetadata::~AllocatedMetadata() {
+  grpc_slice_unref_internal(key());
+  grpc_slice_unref_internal(value());
+  void* user_data = user_data_.data.Load(grpc_core::MemoryOrder::RELAXED);
+  if (user_data) {
+    destroy_user_data_func destroy_user_data =
+        user_data_.destroy_user_data.Load(grpc_core::MemoryOrder::RELAXED);
+    destroy_user_data(user_data);
+  }
+}
+
+#ifndef NDEBUG
+void grpc_core::RefcountedMdBase::TraceAtStart(const char* tag) {
+  if (grpc_trace_metadata.enabled()) {
+    char* key_str = grpc_slice_to_c_string(key());
+    char* value_str = grpc_slice_to_c_string(value());
+    gpr_log(GPR_DEBUG, "mdelem   %s:%p:%" PRIdPTR ": '%s' = '%s'", tag, this,
+            RefValue(), key_str, value_str);
+    gpr_free(key_str);
+    gpr_free(value_str);
+  }
+}
+#endif
+
+InternedMetadata::InternedMetadata(const grpc_slice& key,
+                                   const grpc_slice& value, uint32_t hash,
+                                   InternedMetadata* next)
+    : RefcountedMdBase(grpc_slice_ref_internal(key),
+                       grpc_slice_ref_internal(value), hash),
+      link_(next) {
+#ifndef NDEBUG
+  TraceAtStart("INTERNED_MD");
+#endif
+}
+
+InternedMetadata::InternedMetadata(const grpc_slice& key,
+                                   const grpc_slice& value, uint32_t hash,
+                                   InternedMetadata* next, const NoRefKey*)
+    : RefcountedMdBase(key, grpc_slice_ref_internal(value), hash), link_(next) {
+#ifndef NDEBUG
+  TraceAtStart("INTERNED_MD_NOREF_KEY");
+#endif
+}
+
+InternedMetadata::~InternedMetadata() {
+  grpc_slice_unref_internal(key());
+  grpc_slice_unref_internal(value());
+  void* user_data = user_data_.data.Load(grpc_core::MemoryOrder::RELAXED);
+  if (user_data) {
+    destroy_user_data_func destroy_user_data =
+        user_data_.destroy_user_data.Load(grpc_core::MemoryOrder::RELAXED);
+    destroy_user_data(user_data);
+  }
+}
+
+size_t InternedMetadata::CleanupLinkedMetadata(
+    InternedMetadata::BucketLink* head) {
+  size_t num_freed = 0;
+  InternedMetadata::BucketLink* prev_next = head;
+  InternedMetadata *md, *next;
+
+  for (md = head->next; md; md = next) {
+    next = md->link_.next;
+    if (md->AllRefsDropped()) {
+      prev_next->next = next;
+      delete md;
+      num_freed++;
+    } else {
+      prev_next = &md->link_;
+    }
+  }
+  return num_freed;
+}
+
+typedef struct mdtab_shard {
+  gpr_mu mu;
+  InternedMetadata::BucketLink* elems;
+  size_t count;
+  size_t capacity;
+  /** Estimate of the number of unreferenced mdelems in the hash table.
+      This will eventually converge to the exact number, but it's instantaneous
+      accuracy is not guaranteed */
+  gpr_atm free_estimate;
+} mdtab_shard;
+
+static mdtab_shard g_shards[SHARD_COUNT];
+
+static void gc_mdtab(mdtab_shard* shard);
+
+void grpc_mdctx_global_init(void) {
+  /* initialize shards */
+  for (size_t i = 0; i < SHARD_COUNT; i++) {
+    mdtab_shard* shard = &g_shards[i];
+    gpr_mu_init(&shard->mu);
+    shard->count = 0;
+    gpr_atm_no_barrier_store(&shard->free_estimate, 0);
+    shard->capacity = INITIAL_SHARD_CAPACITY;
+    shard->elems = static_cast<InternedMetadata::BucketLink*>(
+        gpr_zalloc(sizeof(*shard->elems) * shard->capacity));
+  }
+}
+
+void grpc_mdctx_global_shutdown() {
+  for (size_t i = 0; i < SHARD_COUNT; i++) {
+    mdtab_shard* shard = &g_shards[i];
+    gpr_mu_destroy(&shard->mu);
+    gc_mdtab(shard);
+    if (shard->count != 0) {
+      gpr_log(GPR_DEBUG, "WARNING: %" PRIuPTR " metadata elements were leaked",
+              shard->count);
+      if (grpc_iomgr_abort_on_leaks()) {
+        abort();
+      }
+    }
+      // For ASAN builds, we don't want to crash here, because that will
+      // prevent ASAN from providing leak detection information, which is
+      // far more useful than this simple assertion.
+#ifndef GRPC_ASAN_ENABLED
+    GPR_DEBUG_ASSERT(shard->count == 0);
+#endif
+    gpr_free(shard->elems);
+  }
+}
+
+#ifndef NDEBUG
+static int is_mdelem_static(grpc_mdelem e) {
+  return reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(e)) >=
+             &grpc_static_mdelem_table()[0] &&
+         reinterpret_cast<grpc_core::StaticMetadata*>(GRPC_MDELEM_DATA(e)) <
+             &grpc_static_mdelem_table()[GRPC_STATIC_MDELEM_COUNT];
+}
+#endif
+
+void InternedMetadata::RefWithShardLocked(mdtab_shard* shard) {
+#ifndef NDEBUG
+  if (grpc_trace_metadata.enabled()) {
+    char* key_str = grpc_slice_to_c_string(key());
+    char* value_str = grpc_slice_to_c_string(value());
+    intptr_t value = RefValue();
+    gpr_log(__FILE__, __LINE__, GPR_LOG_SEVERITY_DEBUG,
+            "mdelem   REF:%p:%" PRIdPTR "->%" PRIdPTR ": '%s' = '%s'", this,
+            value, value + 1, key_str, value_str);
+    gpr_free(key_str);
+    gpr_free(value_str);
+  }
+#endif
+  if (FirstRef()) {
+    gpr_atm_no_barrier_fetch_add(&shard->free_estimate, -1);
+  }
+}
+
+static void gc_mdtab(mdtab_shard* shard) {
+  GPR_TIMER_SCOPE("gc_mdtab", 0);
+  size_t num_freed = 0;
+  for (size_t i = 0; i < shard->capacity; ++i) {
+    intptr_t freed = InternedMetadata::CleanupLinkedMetadata(&shard->elems[i]);
+    num_freed += freed;
+    shard->count -= freed;
+  }
+  gpr_atm_no_barrier_fetch_add(&shard->free_estimate,
+                               -static_cast<intptr_t>(num_freed));
+}
+
+static void grow_mdtab(mdtab_shard* shard) {
+  GPR_TIMER_SCOPE("grow_mdtab", 0);
+
+  size_t capacity = shard->capacity * 2;
+  size_t i;
+  InternedMetadata::BucketLink* mdtab;
+  InternedMetadata *md, *next;
+  uint32_t hash;
+
+  mdtab = static_cast<InternedMetadata::BucketLink*>(
+      gpr_zalloc(sizeof(InternedMetadata::BucketLink) * capacity));
+
+  for (i = 0; i < shard->capacity; i++) {
+    for (md = shard->elems[i].next; md; md = next) {
+      size_t idx;
+      hash = md->hash();
+      next = md->bucket_next();
+      idx = TABLE_IDX(hash, capacity);
+      md->set_bucket_next(mdtab[idx].next);
+      mdtab[idx].next = md;
+    }
+  }
+  gpr_free(shard->elems);
+  shard->elems = mdtab;
+  shard->capacity = capacity;
+}
+
+static void rehash_mdtab(mdtab_shard* shard) {
+  if (gpr_atm_no_barrier_load(&shard->free_estimate) >
+      static_cast<gpr_atm>(shard->capacity / 4)) {
+    gc_mdtab(shard);
+  } else {
+    grow_mdtab(shard);
+  }
+}
+
+template <bool key_definitely_static, bool value_definitely_static = false>
+static grpc_mdelem md_create_maybe_static(const grpc_slice& key,
+                                          const grpc_slice& value);
+template <bool key_definitely_static>
+static grpc_mdelem md_create_must_intern(const grpc_slice& key,
+                                         const grpc_slice& value,
+                                         uint32_t hash);
+
+template <bool key_definitely_static, bool value_definitely_static = false>
+static grpc_mdelem md_create(
+    const grpc_slice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store) {
+  // Ensure slices are, in fact, static if we claimed they were.
+  GPR_DEBUG_ASSERT(!key_definitely_static ||
+                   GRPC_IS_STATIC_METADATA_STRING(key));
+  GPR_DEBUG_ASSERT(!value_definitely_static ||
+                   GRPC_IS_STATIC_METADATA_STRING(value));
+  const bool key_is_interned =
+      key_definitely_static || grpc_slice_is_interned(key);
+  const bool value_is_interned =
+      value_definitely_static || grpc_slice_is_interned(value);
+  // External storage if either slice is not interned and the caller already
+  // created a backing store. If no backing store, we allocate one.
+  if (!key_is_interned || !value_is_interned) {
+    if (compatible_external_backing_store != nullptr) {
+      // Caller provided backing store.
+      return GRPC_MAKE_MDELEM(compatible_external_backing_store,
+                              GRPC_MDELEM_STORAGE_EXTERNAL);
+    } else {
+      // We allocate backing store.
+      return key_definitely_static
+                 ? GRPC_MAKE_MDELEM(
+                       new AllocatedMetadata(
+                           key, value,
+                           static_cast<const AllocatedMetadata::NoRefKey*>(
+                               nullptr)),
+                       GRPC_MDELEM_STORAGE_ALLOCATED)
+                 : GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                                    GRPC_MDELEM_STORAGE_ALLOCATED);
+    }
+  }
+  return md_create_maybe_static<key_definitely_static, value_definitely_static>(
+      key, value);
+}
+
+template <bool key_definitely_static, bool value_definitely_static>
+static grpc_mdelem md_create_maybe_static(const grpc_slice& key,
+                                          const grpc_slice& value) {
+  // Ensure slices are, in fact, static if we claimed they were.
+  GPR_DEBUG_ASSERT(!key_definitely_static ||
+                   GRPC_IS_STATIC_METADATA_STRING(key));
+  GPR_DEBUG_ASSERT(!value_definitely_static ||
+                   GRPC_IS_STATIC_METADATA_STRING(value));
+  GPR_DEBUG_ASSERT(key.refcount != nullptr);
+  GPR_DEBUG_ASSERT(value.refcount != nullptr);
+
+  const bool key_is_static_mdstr =
+      key_definitely_static ||
+      key.refcount->GetType() == grpc_slice_refcount::Type::STATIC;
+  const bool value_is_static_mdstr =
+      value_definitely_static ||
+      value.refcount->GetType() == grpc_slice_refcount::Type::STATIC;
+
+  const intptr_t kidx = GRPC_STATIC_METADATA_INDEX(key);
+
+  // Not all static slice input yields a statically stored metadata element.
+  if (key_is_static_mdstr && value_is_static_mdstr) {
+    grpc_mdelem static_elem = grpc_static_mdelem_for_static_strings(
+        kidx, GRPC_STATIC_METADATA_INDEX(value));
+    if (!GRPC_MDISNULL(static_elem)) {
+      return static_elem;
+    }
+  }
+
+  uint32_t khash = key_definitely_static
+                       ? grpc_static_metadata_hash_values[kidx]
+                       : grpc_slice_hash_refcounted(key);
+
+  uint32_t hash = GRPC_MDSTR_KV_HASH(khash, grpc_slice_hash_refcounted(value));
+  return md_create_must_intern<key_definitely_static>(key, value, hash);
+}
+
+template <bool key_definitely_static>
+static grpc_mdelem md_create_must_intern(const grpc_slice& key,
+                                         const grpc_slice& value,
+                                         uint32_t hash) {
+  // Here, we know both key and value are both at least interned, and both
+  // possibly static. We know that anything inside the shared interned table is
+  // also at least interned (and maybe static). Note that equality for a static
+  // and interned slice implies that they are both the same exact slice.
+  // The same applies to a pair of interned slices, or a pair of static slices.
+  // Rather than run the full equality check, we can therefore just do a pointer
+  // comparison of the refcounts.
+  InternedMetadata* md;
+  mdtab_shard* shard = &g_shards[SHARD_IDX(hash)];
+  size_t idx;
+
+  GPR_TIMER_SCOPE("grpc_mdelem_from_metadata_strings", 0);
+
+  gpr_mu_lock(&shard->mu);
+
+  idx = TABLE_IDX(hash, shard->capacity);
+  /* search for an existing pair */
+  for (md = shard->elems[idx].next; md; md = md->bucket_next()) {
+    if (grpc_slice_static_interned_equal(key, md->key()) &&
+        grpc_slice_static_interned_equal(value, md->value())) {
+      md->RefWithShardLocked(shard);
+      gpr_mu_unlock(&shard->mu);
+      return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED);
+    }
+  }
+
+  /* not found: create a new pair */
+  md = key_definitely_static
+           ? new InternedMetadata(
+                 key, value, hash, shard->elems[idx].next,
+                 static_cast<const InternedMetadata::NoRefKey*>(nullptr))
+           : new InternedMetadata(key, value, hash, shard->elems[idx].next);
+  shard->elems[idx].next = md;
+  shard->count++;
+
+  if (shard->count > shard->capacity * 2) {
+    rehash_mdtab(shard);
+  }
+
+  gpr_mu_unlock(&shard->mu);
+
+  return GRPC_MAKE_MDELEM(md, GRPC_MDELEM_STORAGE_INTERNED);
+}
+
+grpc_mdelem grpc_mdelem_create(
+    const grpc_slice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store) {
+  return md_create<false>(key, value, compatible_external_backing_store);
+}
+
+grpc_mdelem grpc_mdelem_create(
+    const grpc_core::StaticMetadataSlice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store) {
+  return md_create<true>(key, value, compatible_external_backing_store);
+}
+
+/* Create grpc_mdelem from provided slices. We specify via template parameter
+   whether we know that the input key is static or not. If it is, we short
+   circuit various comparisons and a no-op unref. */
+template <bool key_definitely_static>
+static grpc_mdelem md_from_slices(const grpc_slice& key,
+                                  const grpc_slice& value) {
+  // Ensure key is, in fact, static if we claimed it was.
+  GPR_DEBUG_ASSERT(!key_definitely_static ||
+                   GRPC_IS_STATIC_METADATA_STRING(key));
+  grpc_mdelem out = md_create<key_definitely_static>(key, value, nullptr);
+  if (!key_definitely_static) {
+    grpc_slice_unref_internal(key);
+  }
+  grpc_slice_unref_internal(value);
+  return out;
+}
+
+grpc_mdelem grpc_mdelem_from_slices(const grpc_slice& key,
+                                    const grpc_slice& value) {
+  return md_from_slices</*key_definitely_static=*/false>(key, value);
+}
+
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::StaticMetadataSlice& key,
+                                    const grpc_slice& value) {
+  return md_from_slices</*key_definitely_static=*/true>(key, value);
+}
+
+grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::StaticMetadataSlice& value) {
+  grpc_mdelem out = md_create_maybe_static<true, true>(key, value);
+  return out;
+}
+
+grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::ManagedMemorySlice& value) {
+  // TODO(arjunroy): We can save the unref if md_create_maybe_static ended up
+  // creating a new interned metadata. But otherwise - we need this here.
+  grpc_mdelem out = md_create_maybe_static<true>(key, value);
+  grpc_slice_unref_internal(value);
+  return out;
+}
+
+grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::ManagedMemorySlice& key,
+    const grpc_core::ManagedMemorySlice& value) {
+  grpc_mdelem out = md_create_maybe_static<false>(key, value);
+  // TODO(arjunroy): We can save the unref if md_create_maybe_static ended up
+  // creating a new interned metadata. But otherwise - we need this here.
+  grpc_slice_unref_internal(key);
+  grpc_slice_unref_internal(value);
+  return out;
+}
+
+grpc_mdelem grpc_mdelem_from_grpc_metadata(grpc_metadata* metadata) {
+  bool changed = false;
+  grpc_slice key_slice =
+      grpc_slice_maybe_static_intern(metadata->key, &changed);
+  grpc_slice value_slice =
+      grpc_slice_maybe_static_intern(metadata->value, &changed);
+  return grpc_mdelem_create(
+      key_slice, value_slice,
+      changed ? nullptr : reinterpret_cast<grpc_mdelem_data*>(metadata));
+}
+
+static void* get_user_data(UserData* user_data, void (*destroy_func)(void*)) {
+  if (user_data->destroy_user_data.Load(grpc_core::MemoryOrder::ACQUIRE) ==
+      destroy_func) {
+    return user_data->data.Load(grpc_core::MemoryOrder::RELAXED);
+  } else {
+    return nullptr;
+  }
+}
+
+void* grpc_mdelem_get_user_data(grpc_mdelem md, void (*destroy_func)(void*)) {
+  switch (GRPC_MDELEM_STORAGE(md)) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+      return nullptr;
+    case GRPC_MDELEM_STORAGE_STATIC:
+      return reinterpret_cast<void*>(
+          grpc_static_mdelem_user_data
+              [reinterpret_cast<grpc_core::StaticMetadata*>(
+                   GRPC_MDELEM_DATA(md)) -
+               grpc_static_mdelem_table()]);
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      auto* am = reinterpret_cast<AllocatedMetadata*>(GRPC_MDELEM_DATA(md));
+      return get_user_data(am->user_data(), destroy_func);
+    }
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      auto* im = reinterpret_cast<InternedMetadata*> GRPC_MDELEM_DATA(md);
+      return get_user_data(im->user_data(), destroy_func);
+    }
+  }
+  GPR_UNREACHABLE_CODE(return nullptr);
+}
+
+static void* set_user_data(UserData* ud, void (*destroy_func)(void*),
+                           void* data) {
+  GPR_ASSERT((data == nullptr) == (destroy_func == nullptr));
+  grpc_core::ReleasableMutexLock lock(&ud->mu_user_data);
+  if (ud->destroy_user_data.Load(grpc_core::MemoryOrder::RELAXED)) {
+    /* user data can only be set once */
+    lock.Unlock();
+    if (destroy_func != nullptr) {
+      destroy_func(data);
+    }
+    return ud->data.Load(grpc_core::MemoryOrder::RELAXED);
+  }
+  ud->data.Store(data, grpc_core::MemoryOrder::RELAXED);
+  ud->destroy_user_data.Store(destroy_func, grpc_core::MemoryOrder::RELEASE);
+  return data;
+}
+
+void* grpc_mdelem_set_user_data(grpc_mdelem md, void (*destroy_func)(void*),
+                                void* data) {
+  switch (GRPC_MDELEM_STORAGE(md)) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+      destroy_func(data);
+      return nullptr;
+    case GRPC_MDELEM_STORAGE_STATIC:
+      destroy_func(data);
+      return reinterpret_cast<void*>(
+          grpc_static_mdelem_user_data
+              [reinterpret_cast<grpc_core::StaticMetadata*>(
+                   GRPC_MDELEM_DATA(md)) -
+               grpc_static_mdelem_table()]);
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      auto* am = reinterpret_cast<AllocatedMetadata*>(GRPC_MDELEM_DATA(md));
+      return set_user_data(am->user_data(), destroy_func, data);
+    }
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      auto* im = reinterpret_cast<InternedMetadata*> GRPC_MDELEM_DATA(md);
+      GPR_DEBUG_ASSERT(!is_mdelem_static(md));
+      return set_user_data(im->user_data(), destroy_func, data);
+    }
+  }
+  GPR_UNREACHABLE_CODE(return nullptr);
+}
+
+bool grpc_mdelem_eq(grpc_mdelem a, grpc_mdelem b) {
+  if (a.payload == b.payload) return true;
+  if (GRPC_MDELEM_IS_INTERNED(a) && GRPC_MDELEM_IS_INTERNED(b)) return false;
+  if (GRPC_MDISNULL(a) || GRPC_MDISNULL(b)) return false;
+  return grpc_slice_eq(GRPC_MDKEY(a), GRPC_MDKEY(b)) &&
+         grpc_slice_eq(GRPC_MDVALUE(a), GRPC_MDVALUE(b));
+}
+
+static void note_disposed_interned_metadata(uint32_t hash) {
+  mdtab_shard* shard = &g_shards[SHARD_IDX(hash)];
+  gpr_atm_no_barrier_fetch_add(&shard->free_estimate, 1);
+}
+
+void grpc_mdelem_do_unref(grpc_mdelem gmd DEBUG_ARGS) {
+  switch (GRPC_MDELEM_STORAGE(gmd)) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      return;
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      auto* md = reinterpret_cast<InternedMetadata*> GRPC_MDELEM_DATA(gmd);
+      uint32_t hash = md->hash();
+      if (GPR_UNLIKELY(md->Unref(FWD_DEBUG_ARGS))) {
+        /* once the refcount hits zero, some other thread can come along and
+           free md at any time: it's unsafe from this point on to access it */
+        note_disposed_interned_metadata(hash);
+      }
+      break;
+    }
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      auto* md = reinterpret_cast<AllocatedMetadata*> GRPC_MDELEM_DATA(gmd);
+      if (GPR_UNLIKELY(md->Unref(FWD_DEBUG_ARGS))) {
+        delete md;
+      }
+      break;
+    }
+  }
+}
+
+void grpc_mdelem_on_final_unref(grpc_mdelem_data_storage storage, void* ptr,
+                                uint32_t hash DEBUG_ARGS) {
+  switch (storage) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      return;
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      note_disposed_interned_metadata(hash);
+      break;
+    }
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      delete reinterpret_cast<AllocatedMetadata*>(ptr);
+      break;
+    }
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.h
new file mode 100644
index 0000000..4bb8d64
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata.h	
@@ -0,0 +1,446 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/impl/codegen/log.h>
+
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/gprpp/atomic.h"
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/slice/slice_utils.h"
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_metadata;
+
+/* This file provides a mechanism for tracking metadata through the grpc stack.
+   It's not intended for consumption outside of the library.
+
+   Metadata is tracked in the context of a sharded global grpc_mdctx. The
+   context tracks unique strings (grpc_mdstr) and pairs of strings
+   (grpc_mdelem). Any of these objects can be checked for equality by comparing
+   their pointers. These objects are reference counted.
+
+   grpc_mdelem can additionally store a (non-NULL) user data pointer. This
+   pointer is intended to be used to cache semantic meaning of a metadata
+   element. For example, an OAuth token may cache the credentials it represents
+   and the time at which it expires in the mdelem user data.
+
+   Combining this metadata cache and the hpack compression table allows us to
+   simply lookup complete preparsed objects quickly, incurring a few atomic
+   ops per metadata element on the fast path.
+
+   grpc_mdelem instances MAY live longer than their refcount implies, and are
+   garbage collected periodically, meaning cached data can easily outlive a
+   single request.
+
+   STATIC METADATA: in static_metadata.h we declare a set of static metadata.
+   These mdelems and mdstrs are available via pre-declared code generated macros
+   and are available to code anywhere between grpc_init() and grpc_shutdown().
+   They are not refcounted, but can be passed to _ref and _unref functions
+   declared here - in which case those functions are effectively no-ops. */
+
+/* Forward declarations */
+typedef struct grpc_mdelem grpc_mdelem;
+
+/* if changing this, make identical changes in:
+   - grpc_core::{InternedMetadata, AllocatedMetadata}
+   - grpc_metadata in grpc_types.h */
+typedef struct grpc_mdelem_data {
+  const grpc_slice key;
+  const grpc_slice value;
+  /* there is a private part to this in metadata.c */
+} grpc_mdelem_data;
+
+/* GRPC_MDELEM_STORAGE_* enum values that can be treated as interned always have
+   this bit set in their integer value */
+#define GRPC_MDELEM_STORAGE_INTERNED_BIT 1
+
+/* External and static storage metadata has no refcount to ref/unref. Allocated
+ * and interned metadata do have a refcount. Metadata ref and unref methods use
+ * a switch statement on this enum to determine which behaviour to execute.
+ * Keeping the no-ref cases together and the ref-cases together leads to
+ * slightly better code generation (9 inlined instructions rather than 10). */
+typedef enum {
+  /* memory pointed to by grpc_mdelem::payload is owned by an external system */
+  GRPC_MDELEM_STORAGE_EXTERNAL = 0,
+  /* memory is in the static metadata table */
+  GRPC_MDELEM_STORAGE_STATIC = GRPC_MDELEM_STORAGE_INTERNED_BIT,
+  /* memory pointed to by grpc_mdelem::payload is allocated by the metadata
+     system */
+  GRPC_MDELEM_STORAGE_ALLOCATED = 2,
+  /* memory pointed to by grpc_mdelem::payload is interned by the metadata
+     system */
+  GRPC_MDELEM_STORAGE_INTERNED = 2 | GRPC_MDELEM_STORAGE_INTERNED_BIT,
+} grpc_mdelem_data_storage;
+
+struct grpc_mdelem {
+  /* a grpc_mdelem_data* generally, with the two lower bits signalling memory
+     ownership as per grpc_mdelem_data_storage */
+  uintptr_t payload;
+};
+
+#define GRPC_MDELEM_DATA(md) ((grpc_mdelem_data*)((md).payload & ~(uintptr_t)3))
+#define GRPC_MDELEM_STORAGE(md) \
+  ((grpc_mdelem_data_storage)((md).payload & (uintptr_t)3))
+#ifdef __cplusplus
+#define GRPC_MAKE_MDELEM(data, storage) \
+  (grpc_mdelem{((uintptr_t)(data)) | ((uintptr_t)storage)})
+#else
+#define GRPC_MAKE_MDELEM(data, storage) \
+  ((grpc_mdelem){((uintptr_t)(data)) | ((uintptr_t)storage)})
+#endif
+#define GRPC_MDELEM_IS_INTERNED(md)          \
+  ((grpc_mdelem_data_storage)((md).payload & \
+                              (uintptr_t)GRPC_MDELEM_STORAGE_INTERNED_BIT))
+
+/* Given arbitrary input slices, create a grpc_mdelem object. The caller refs
+ * the input slices; we unref them. This method is always safe to call; however,
+ * if we know data about the slices in question (e.g. if we knew our key was
+ * static) we can call specializations that save on cycle count. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_slice& key,
+                                    const grpc_slice& value);
+
+/* Like grpc_mdelem_from_slices, but we know that key is a static slice. This
+   saves us a few branches and a no-op call to md_unref() for the key. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::StaticMetadataSlice& key,
+                                    const grpc_slice& value);
+
+/* Like grpc_mdelem_from_slices, but key is static and val is static. */
+grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::StaticMetadataSlice& value);
+
+/* Like grpc_mdelem_from_slices, but key is static and val is interned. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::StaticMetadataSlice& key,
+                                    const grpc_core::ManagedMemorySlice& value);
+
+/* Like grpc_mdelem_from_slices, but key and val are interned. */
+grpc_mdelem grpc_mdelem_from_slices(const grpc_core::ManagedMemorySlice& key,
+                                    const grpc_core::ManagedMemorySlice& value);
+
+/* Cheaply convert a grpc_metadata to a grpc_mdelem; may use the grpc_metadata
+   object as backing storage (so lifetimes should align) */
+grpc_mdelem grpc_mdelem_from_grpc_metadata(grpc_metadata* metadata);
+
+/* Does not unref the slices; if a new non-interned mdelem is needed, allocates
+   one if compatible_external_backing_store is NULL, or uses
+   compatible_external_backing_store if it is non-NULL (in which case it's the
+   users responsibility to ensure that it outlives usage) */
+grpc_mdelem grpc_mdelem_create(
+    const grpc_slice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store);
+
+/* Like grpc_mdelem_create, but we know that key is static. */
+grpc_mdelem grpc_mdelem_create(
+    const grpc_core::StaticMetadataSlice& key, const grpc_slice& value,
+    grpc_mdelem_data* compatible_external_backing_store);
+
+#define GRPC_MDKEY(md) (GRPC_MDELEM_DATA(md)->key)
+#define GRPC_MDVALUE(md) (GRPC_MDELEM_DATA(md)->value)
+
+bool grpc_mdelem_eq(grpc_mdelem a, grpc_mdelem b);
+/* Often we compare metadata where we know a-priori that the second parameter is
+ * static, and that the keys match. This most commonly happens when processing
+ * metadata batch callouts in initial/trailing filters. In this case, fastpath
+ * grpc_mdelem_eq and remove unnecessary checks. */
+inline bool grpc_mdelem_static_value_eq(grpc_mdelem a, grpc_mdelem b_static) {
+  if (a.payload == b_static.payload) return true;
+  return grpc_slice_eq_static_interned(GRPC_MDVALUE(a), GRPC_MDVALUE(b_static));
+}
+#define GRPC_MDISNULL(md) (GRPC_MDELEM_DATA(md) == NULL)
+
+inline bool grpc_mdelem_both_interned_eq(grpc_mdelem a_interned,
+                                         grpc_mdelem b_interned) {
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(a_interned) ||
+                   GRPC_MDISNULL(a_interned));
+  GPR_DEBUG_ASSERT(GRPC_MDELEM_IS_INTERNED(b_interned) ||
+                   GRPC_MDISNULL(b_interned));
+  return a_interned.payload == b_interned.payload;
+}
+
+/* Mutator and accessor for grpc_mdelem user data. The destructor function
+   is used as a type tag and is checked during user_data fetch. */
+void* grpc_mdelem_get_user_data(grpc_mdelem md, void (*if_destroy_func)(void*));
+void* grpc_mdelem_set_user_data(grpc_mdelem md, void (*destroy_func)(void*),
+                                void* data);
+
+// Defined in metadata.cc.
+struct mdtab_shard;
+
+#ifndef NDEBUG
+void grpc_mdelem_trace_ref(void* md, const grpc_slice& key,
+                           const grpc_slice& value, intptr_t refcnt,
+                           const char* file, int line);
+void grpc_mdelem_trace_unref(void* md, const grpc_slice& key,
+                             const grpc_slice& value, intptr_t refcnt,
+                             const char* file, int line);
+#endif
+namespace grpc_core {
+
+typedef void (*destroy_user_data_func)(void* data);
+
+struct UserData {
+  Mutex mu_user_data;
+  grpc_core::Atomic<destroy_user_data_func> destroy_user_data;
+  grpc_core::Atomic<void*> data;
+};
+
+class StaticMetadata {
+ public:
+  StaticMetadata(const grpc_slice& key, const grpc_slice& value, uintptr_t idx)
+      : kv_({key, value}), hash_(0), static_idx_(idx) {}
+
+  const grpc_mdelem_data& data() const { return kv_; }
+
+  void HashInit();
+  uint32_t hash() { return hash_; }
+  uintptr_t StaticIndex() { return static_idx_; }
+
+ private:
+  grpc_mdelem_data kv_;
+
+  /* private only data */
+  uint32_t hash_;
+  uintptr_t static_idx_;
+};
+
+class RefcountedMdBase {
+ public:
+  RefcountedMdBase(const grpc_slice& key, const grpc_slice& value)
+      : key_(key), value_(value), refcnt_(1) {}
+  RefcountedMdBase(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash)
+      : key_(key), value_(value), refcnt_(1), hash_(hash) {}
+
+  const grpc_slice& key() const { return key_; }
+  const grpc_slice& value() const { return value_; }
+  uint32_t hash() { return hash_; }
+
+#ifndef NDEBUG
+  void Ref(const char* file, int line) {
+    grpc_mdelem_trace_ref(this, key_, value_, RefValue(), file, line);
+    const intptr_t prior = refcnt_.FetchAdd(1, MemoryOrder::RELAXED);
+    GPR_ASSERT(prior > 0);
+  }
+  bool Unref(const char* file, int line) {
+    grpc_mdelem_trace_unref(this, key_, value_, RefValue(), file, line);
+    return Unref();
+  }
+#endif
+  void Ref() {
+    /* we can assume the ref count is >= 1 as the application is calling
+       this function - meaning that no adjustment to mdtab_free is necessary,
+       simplifying the logic here to be just an atomic increment */
+    refcnt_.FetchAdd(1, MemoryOrder::RELAXED);
+  }
+  bool Unref() {
+    const intptr_t prior = refcnt_.FetchSub(1, MemoryOrder::ACQ_REL);
+    GPR_DEBUG_ASSERT(prior > 0);
+    return prior == 1;
+  }
+
+ protected:
+#ifndef NDEBUG
+  void TraceAtStart(const char* tag);
+#endif
+
+  intptr_t RefValue() { return refcnt_.Load(MemoryOrder::RELAXED); }
+  bool AllRefsDropped() { return refcnt_.Load(MemoryOrder::ACQUIRE) == 0; }
+  bool FirstRef() { return refcnt_.FetchAdd(1, MemoryOrder::RELAXED) == 0; }
+
+ private:
+  /* must be byte compatible with grpc_mdelem_data */
+  grpc_slice key_;
+  grpc_slice value_;
+  grpc_core::Atomic<intptr_t> refcnt_;
+  uint32_t hash_ = 0;
+};
+
+class InternedMetadata : public RefcountedMdBase {
+ public:
+  // TODO(arjunroy): Change to use strongly typed slices instead.
+  struct NoRefKey {};
+  struct BucketLink {
+    explicit BucketLink(InternedMetadata* md) : next(md) {}
+
+    InternedMetadata* next = nullptr;
+  };
+  InternedMetadata(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash, InternedMetadata* next);
+  InternedMetadata(const grpc_slice& key, const grpc_slice& value,
+                   uint32_t hash, InternedMetadata* next, const NoRefKey*);
+
+  ~InternedMetadata();
+  void RefWithShardLocked(mdtab_shard* shard);
+  UserData* user_data() { return &user_data_; }
+  InternedMetadata* bucket_next() { return link_.next; }
+  void set_bucket_next(InternedMetadata* md) { link_.next = md; }
+
+  static size_t CleanupLinkedMetadata(BucketLink* head);
+
+ private:
+  UserData user_data_;
+  BucketLink link_;
+};
+
+/* Shadow structure for grpc_mdelem_data for allocated elements */
+class AllocatedMetadata : public RefcountedMdBase {
+ public:
+  // TODO(arjunroy): Change to use strongly typed slices instead.
+  struct NoRefKey {};
+  AllocatedMetadata(const grpc_slice& key, const grpc_slice& value);
+  AllocatedMetadata(const grpc_core::ManagedMemorySlice& key,
+                    const grpc_core::UnmanagedMemorySlice& value);
+  AllocatedMetadata(const grpc_core::ExternallyManagedSlice& key,
+                    const grpc_core::UnmanagedMemorySlice& value);
+  AllocatedMetadata(const grpc_slice& key, const grpc_slice& value,
+                    const NoRefKey*);
+  ~AllocatedMetadata();
+
+  UserData* user_data() { return &user_data_; }
+
+ private:
+  UserData user_data_;
+};
+
+}  // namespace grpc_core
+
+#ifndef NDEBUG
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s), __FILE__, __LINE__)
+inline grpc_mdelem grpc_mdelem_ref(grpc_mdelem gmd, const char* file,
+                                   int line) {
+#else  // ifndef NDEBUG
+#define GRPC_MDELEM_REF(s) grpc_mdelem_ref((s))
+inline grpc_mdelem grpc_mdelem_ref(grpc_mdelem gmd) {
+#endif  // ifndef NDEBUG
+  switch (GRPC_MDELEM_STORAGE(gmd)) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      break;
+    case GRPC_MDELEM_STORAGE_INTERNED: {
+      auto* md =
+          reinterpret_cast<grpc_core::InternedMetadata*> GRPC_MDELEM_DATA(gmd);
+      /* use C assert to have this removed in opt builds */
+#ifndef NDEBUG
+      md->Ref(file, line);
+#else
+      md->Ref();
+#endif
+      break;
+    }
+    case GRPC_MDELEM_STORAGE_ALLOCATED: {
+      auto* md =
+          reinterpret_cast<grpc_core::AllocatedMetadata*> GRPC_MDELEM_DATA(gmd);
+#ifndef NDEBUG
+      md->Ref(file, line);
+#else
+      md->Ref();
+#endif
+      break;
+    }
+  }
+  return gmd;
+}
+
+#ifndef NDEBUG
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s), __FILE__, __LINE__)
+void grpc_mdelem_on_final_unref(grpc_mdelem_data_storage storage, void* ptr,
+                                uint32_t hash, const char* file, int line);
+inline void grpc_mdelem_unref(grpc_mdelem gmd, const char* file, int line) {
+#else
+#define GRPC_MDELEM_UNREF(s) grpc_mdelem_unref((s))
+void grpc_mdelem_on_final_unref(grpc_mdelem_data_storage storage, void* ptr,
+                                uint32_t hash);
+inline void grpc_mdelem_unref(grpc_mdelem gmd) {
+#endif
+  const grpc_mdelem_data_storage storage = GRPC_MDELEM_STORAGE(gmd);
+  switch (storage) {
+    case GRPC_MDELEM_STORAGE_EXTERNAL:
+    case GRPC_MDELEM_STORAGE_STATIC:
+      return;
+    case GRPC_MDELEM_STORAGE_INTERNED:
+    case GRPC_MDELEM_STORAGE_ALLOCATED:
+      auto* md =
+          reinterpret_cast<grpc_core::RefcountedMdBase*> GRPC_MDELEM_DATA(gmd);
+      /* once the refcount hits zero, some other thread can come along and
+         free an interned md at any time: it's unsafe from this point on to
+         access it so we read the hash now. */
+      uint32_t hash = md->hash();
+#ifndef NDEBUG
+      if (GPR_UNLIKELY(md->Unref(file, line))) {
+        grpc_mdelem_on_final_unref(storage, md, hash, file, line);
+#else
+      if (GPR_UNLIKELY(md->Unref())) {
+        grpc_mdelem_on_final_unref(storage, md, hash);
+#endif
+      }
+      return;
+  }
+}
+
+#define GRPC_MDNULL GRPC_MAKE_MDELEM(NULL, GRPC_MDELEM_STORAGE_EXTERNAL)
+
+/* We add 32 bytes of padding as per RFC-7540 section 6.5.2. */
+#define GRPC_MDELEM_LENGTH(e)                                                  \
+  (GRPC_SLICE_LENGTH(GRPC_MDKEY((e))) + GRPC_SLICE_LENGTH(GRPC_MDVALUE((e))) + \
+   32)
+
+#define GRPC_MDSTR_KV_HASH(k_hash, v_hash) (GPR_ROTL((k_hash), 2) ^ (v_hash))
+
+void grpc_mdctx_global_init(void);
+void grpc_mdctx_global_shutdown();
+
+/* Like grpc_mdelem_from_slices, but we know that key is a static or interned
+   slice and value is not static or interned. This gives us an inlinable
+   fastpath - we know we must allocate metadata now, and that we do not need to
+   unref the value (rather, we just transfer the ref). We can avoid a ref since:
+   1) the key slice is passed in already ref'd
+   2) We're guaranteed to create a new Allocated slice, thus meaning the
+      ref can be considered 'transferred'.*/
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::ManagedMemorySlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::ExternallyManagedSlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+inline grpc_mdelem grpc_mdelem_from_slices(
+    const grpc_core::StaticMetadataSlice& key,
+    const grpc_core::UnmanagedMemorySlice& value) {
+  using grpc_core::AllocatedMetadata;
+  return GRPC_MAKE_MDELEM(new AllocatedMetadata(key, value),
+                          GRPC_MDELEM_STORAGE_ALLOCATED);
+}
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.cc
new file mode 100644
index 0000000..66749b6
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.cc	
@@ -0,0 +1,392 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/metadata_batch.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+static void assert_valid_list(grpc_mdelem_list* list) {
+#ifndef NDEBUG
+  grpc_linked_mdelem* l;
+
+  GPR_ASSERT((list->head == nullptr) == (list->tail == nullptr));
+  if (!list->head) return;
+  GPR_ASSERT(list->head->prev == nullptr);
+  GPR_ASSERT(list->tail->next == nullptr);
+  GPR_ASSERT((list->head == list->tail) == (list->head->next == nullptr));
+
+  size_t verified_count = 0;
+  for (l = list->head; l; l = l->next) {
+    GPR_ASSERT(!GRPC_MDISNULL(l->md));
+    GPR_ASSERT((l->prev == nullptr) == (l == list->head));
+    GPR_ASSERT((l->next == nullptr) == (l == list->tail));
+    if (l->next) GPR_ASSERT(l->next->prev == l);
+    if (l->prev) GPR_ASSERT(l->prev->next == l);
+    verified_count++;
+  }
+  GPR_ASSERT(list->count == verified_count);
+#else
+  // Avoid unused-parameter warning for debug-only parameter
+  (void)list;
+#endif /* NDEBUG */
+}
+
+static void assert_valid_callouts(grpc_metadata_batch* batch) {
+#ifndef NDEBUG
+  for (grpc_linked_mdelem* l = batch->list.head; l != nullptr; l = l->next) {
+    grpc_slice key_interned = grpc_slice_intern(GRPC_MDKEY(l->md));
+    grpc_metadata_batch_callouts_index callout_idx =
+        GRPC_BATCH_INDEX_OF(key_interned);
+    if (callout_idx != GRPC_BATCH_CALLOUTS_COUNT) {
+      GPR_ASSERT(batch->idx.array[callout_idx] == l);
+    }
+    grpc_slice_unref_internal(key_interned);
+  }
+#else
+  // Avoid unused-parameter warning for debug-only parameter
+  (void)batch;
+#endif
+}
+
+#ifndef NDEBUG
+void grpc_metadata_batch_assert_ok(grpc_metadata_batch* batch) {
+  assert_valid_list(&batch->list);
+}
+#endif /* NDEBUG */
+
+void grpc_metadata_batch_init(grpc_metadata_batch* batch) {
+  memset(batch, 0, sizeof(*batch));
+  batch->deadline = GRPC_MILLIS_INF_FUTURE;
+}
+
+void grpc_metadata_batch_destroy(grpc_metadata_batch* batch) {
+  grpc_linked_mdelem* l;
+  for (l = batch->list.head; l; l = l->next) {
+    GRPC_MDELEM_UNREF(l->md);
+  }
+}
+
+grpc_error* grpc_attach_md_to_error(grpc_error* src, grpc_mdelem md) {
+  grpc_error* out = grpc_error_set_str(
+      grpc_error_set_str(src, GRPC_ERROR_STR_KEY,
+                         grpc_slice_ref_internal(GRPC_MDKEY(md))),
+      GRPC_ERROR_STR_VALUE, grpc_slice_ref_internal(GRPC_MDVALUE(md)));
+  return out;
+}
+
+static grpc_error* GPR_ATTRIBUTE_NOINLINE error_with_md(grpc_mdelem md) {
+  return grpc_attach_md_to_error(
+      GRPC_ERROR_CREATE_FROM_STATIC_STRING("Unallowed duplicate metadata"), md);
+}
+
+static grpc_error* link_callout(grpc_metadata_batch* batch,
+                                grpc_linked_mdelem* storage,
+                                grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(idx >= 0 && idx < GRPC_BATCH_CALLOUTS_COUNT);
+  if (GPR_LIKELY(batch->idx.array[idx] == nullptr)) {
+    ++batch->list.default_count;
+    batch->idx.array[idx] = storage;
+    return GRPC_ERROR_NONE;
+  }
+  return error_with_md(storage->md);
+}
+
+static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
+                                      grpc_linked_mdelem* storage)
+    GRPC_MUST_USE_RESULT;
+
+static grpc_error* maybe_link_callout(grpc_metadata_batch* batch,
+                                      grpc_linked_mdelem* storage) {
+  grpc_metadata_batch_callouts_index idx =
+      GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md));
+  if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
+    return GRPC_ERROR_NONE;
+  }
+  return link_callout(batch, storage, idx);
+}
+
+static void maybe_unlink_callout(grpc_metadata_batch* batch,
+                                 grpc_linked_mdelem* storage) {
+  grpc_metadata_batch_callouts_index idx =
+      GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md));
+  if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
+    return;
+  }
+  --batch->list.default_count;
+  GPR_DEBUG_ASSERT(batch->idx.array[idx] != nullptr);
+  batch->idx.array[idx] = nullptr;
+}
+
+grpc_error* grpc_metadata_batch_add_head(grpc_metadata_batch* batch,
+                                         grpc_linked_mdelem* storage,
+                                         grpc_mdelem elem_to_add) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_link_head(batch, storage);
+}
+
+static void link_head(grpc_mdelem_list* list, grpc_linked_mdelem* storage) {
+  assert_valid_list(list);
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(storage->md));
+  storage->prev = nullptr;
+  storage->next = list->head;
+  storage->reserved = nullptr;
+  if (list->head != nullptr) {
+    list->head->prev = storage;
+  } else {
+    list->tail = storage;
+  }
+  list->head = storage;
+  list->count++;
+  assert_valid_list(list);
+}
+
+grpc_error* grpc_metadata_batch_link_head(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage) {
+  assert_valid_callouts(batch);
+  grpc_error* err = maybe_link_callout(batch, storage);
+  if (err != GRPC_ERROR_NONE) {
+    assert_valid_callouts(batch);
+    return err;
+  }
+  link_head(&batch->list, storage);
+  assert_valid_callouts(batch);
+  return GRPC_ERROR_NONE;
+}
+
+// TODO(arjunroy): Need to revisit this and see what guarantees exist between
+// C-core and the internal-metadata subsystem. E.g. can we ensure a particular
+// metadata is never added twice, even in the presence of user supplied data?
+grpc_error* grpc_metadata_batch_link_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md)) == idx);
+  assert_valid_callouts(batch);
+  grpc_error* err = link_callout(batch, storage, idx);
+  if (GPR_UNLIKELY(err != GRPC_ERROR_NONE)) {
+    assert_valid_callouts(batch);
+    return err;
+  }
+  link_head(&batch->list, storage);
+  assert_valid_callouts(batch);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_metadata_batch_add_tail(grpc_metadata_batch* batch,
+                                         grpc_linked_mdelem* storage,
+                                         grpc_mdelem elem_to_add) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_link_tail(batch, storage);
+}
+
+static void link_tail(grpc_mdelem_list* list, grpc_linked_mdelem* storage) {
+  assert_valid_list(list);
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(storage->md));
+  storage->prev = list->tail;
+  storage->next = nullptr;
+  storage->reserved = nullptr;
+  if (list->tail != nullptr) {
+    list->tail->next = storage;
+  } else {
+    list->head = storage;
+  }
+  list->tail = storage;
+  list->count++;
+  assert_valid_list(list);
+}
+
+grpc_error* grpc_metadata_batch_link_tail(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage) {
+  assert_valid_callouts(batch);
+  grpc_error* err = maybe_link_callout(batch, storage);
+  if (err != GRPC_ERROR_NONE) {
+    assert_valid_callouts(batch);
+    return err;
+  }
+  link_tail(&batch->list, storage);
+  assert_valid_callouts(batch);
+  return GRPC_ERROR_NONE;
+}
+
+grpc_error* grpc_metadata_batch_link_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(GRPC_BATCH_INDEX_OF(GRPC_MDKEY(storage->md)) == idx);
+  assert_valid_callouts(batch);
+  grpc_error* err = link_callout(batch, storage, idx);
+  if (GPR_UNLIKELY(err != GRPC_ERROR_NONE)) {
+    assert_valid_callouts(batch);
+    return err;
+  }
+  link_tail(&batch->list, storage);
+  assert_valid_callouts(batch);
+  return GRPC_ERROR_NONE;
+}
+
+static void unlink_storage(grpc_mdelem_list* list,
+                           grpc_linked_mdelem* storage) {
+  assert_valid_list(list);
+  if (storage->prev != nullptr) {
+    storage->prev->next = storage->next;
+  } else {
+    list->head = storage->next;
+  }
+  if (storage->next != nullptr) {
+    storage->next->prev = storage->prev;
+  } else {
+    list->tail = storage->prev;
+  }
+  list->count--;
+  assert_valid_list(list);
+}
+
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_linked_mdelem* storage) {
+  assert_valid_callouts(batch);
+  maybe_unlink_callout(batch, storage);
+  unlink_storage(&batch->list, storage);
+  GRPC_MDELEM_UNREF(storage->md);
+  assert_valid_callouts(batch);
+}
+
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_metadata_batch_callouts_index idx) {
+  assert_valid_callouts(batch);
+  grpc_linked_mdelem* storage = batch->idx.array[idx];
+  GPR_DEBUG_ASSERT(storage != nullptr);
+  --batch->list.default_count;
+  batch->idx.array[idx] = nullptr;
+  unlink_storage(&batch->list, storage);
+  GRPC_MDELEM_UNREF(storage->md);
+  assert_valid_callouts(batch);
+}
+
+void grpc_metadata_batch_set_value(grpc_linked_mdelem* storage,
+                                   const grpc_slice& value) {
+  grpc_mdelem old_mdelem = storage->md;
+  grpc_mdelem new_mdelem = grpc_mdelem_from_slices(
+      grpc_slice_ref_internal(GRPC_MDKEY(old_mdelem)), value);
+  storage->md = new_mdelem;
+  GRPC_MDELEM_UNREF(old_mdelem);
+}
+
+grpc_error* grpc_metadata_batch_substitute(grpc_metadata_batch* batch,
+                                           grpc_linked_mdelem* storage,
+                                           grpc_mdelem new_mdelem) {
+  assert_valid_callouts(batch);
+  grpc_error* error = GRPC_ERROR_NONE;
+  grpc_mdelem old_mdelem = storage->md;
+  if (!grpc_slice_eq(GRPC_MDKEY(new_mdelem), GRPC_MDKEY(old_mdelem))) {
+    maybe_unlink_callout(batch, storage);
+    storage->md = new_mdelem;
+    error = maybe_link_callout(batch, storage);
+    if (error != GRPC_ERROR_NONE) {
+      unlink_storage(&batch->list, storage);
+      GRPC_MDELEM_UNREF(storage->md);
+    }
+  } else {
+    storage->md = new_mdelem;
+  }
+  GRPC_MDELEM_UNREF(old_mdelem);
+  assert_valid_callouts(batch);
+  return error;
+}
+
+void grpc_metadata_batch_clear(grpc_metadata_batch* batch) {
+  grpc_metadata_batch_destroy(batch);
+  grpc_metadata_batch_init(batch);
+}
+
+bool grpc_metadata_batch_is_empty(grpc_metadata_batch* batch) {
+  return batch->list.head == nullptr &&
+         batch->deadline == GRPC_MILLIS_INF_FUTURE;
+}
+
+size_t grpc_metadata_batch_size(grpc_metadata_batch* batch) {
+  size_t size = 0;
+  for (grpc_linked_mdelem* elem = batch->list.head; elem != nullptr;
+       elem = elem->next) {
+    size += GRPC_MDELEM_LENGTH(elem->md);
+  }
+  return size;
+}
+
+static void add_error(grpc_error** composite, grpc_error* error,
+                      const char* composite_error_string) {
+  if (error == GRPC_ERROR_NONE) return;
+  if (*composite == GRPC_ERROR_NONE) {
+    *composite = GRPC_ERROR_CREATE_FROM_COPIED_STRING(composite_error_string);
+  }
+  *composite = grpc_error_add_child(*composite, error);
+}
+
+grpc_error* grpc_metadata_batch_filter(grpc_metadata_batch* batch,
+                                       grpc_metadata_batch_filter_func func,
+                                       void* user_data,
+                                       const char* composite_error_string) {
+  grpc_linked_mdelem* l = batch->list.head;
+  grpc_error* error = GRPC_ERROR_NONE;
+  while (l) {
+    grpc_linked_mdelem* next = l->next;
+    grpc_filtered_mdelem new_mdelem = func(user_data, l->md);
+    add_error(&error, new_mdelem.error, composite_error_string);
+    if (GRPC_MDISNULL(new_mdelem.md)) {
+      grpc_metadata_batch_remove(batch, l);
+    } else if (new_mdelem.md.payload != l->md.payload) {
+      grpc_metadata_batch_substitute(batch, l, new_mdelem.md);
+    }
+    l = next;
+  }
+  return error;
+}
+
+void grpc_metadata_batch_copy(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst,
+                              grpc_linked_mdelem* storage) {
+  grpc_metadata_batch_init(dst);
+  dst->deadline = src->deadline;
+  size_t i = 0;
+  for (grpc_linked_mdelem* elem = src->list.head; elem != nullptr;
+       elem = elem->next) {
+    // Error unused in non-debug builds.
+    grpc_error* GRPC_UNUSED error = grpc_metadata_batch_add_tail(
+        dst, &storage[i++], GRPC_MDELEM_REF(elem->md));
+    // The only way that grpc_metadata_batch_add_tail() can fail is if
+    // there's a duplicate entry for a callout.  However, that can't be
+    // the case here, because we would not have been allowed to create
+    // a source batch that had that kind of conflict.
+    GPR_DEBUG_ASSERT(error == GRPC_ERROR_NONE);
+  }
+}
+
+void grpc_metadata_batch_move(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst) {
+  *dst = *src;
+  grpc_metadata_batch_init(src);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.h
new file mode 100644
index 0000000..46a437e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/metadata_batch.h	
@@ -0,0 +1,192 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include <grpc/grpc.h>
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+typedef struct grpc_linked_mdelem {
+  grpc_linked_mdelem() {}
+
+  grpc_mdelem md;
+  struct grpc_linked_mdelem* next = nullptr;
+  struct grpc_linked_mdelem* prev = nullptr;
+  void* reserved;
+} grpc_linked_mdelem;
+
+typedef struct grpc_mdelem_list {
+  size_t count;
+  size_t default_count;  // Number of default keys.
+  grpc_linked_mdelem* head;
+  grpc_linked_mdelem* tail;
+} grpc_mdelem_list;
+
+typedef struct grpc_metadata_batch {
+  /** Metadata elements in this batch */
+  grpc_mdelem_list list;
+  grpc_metadata_batch_callouts idx;
+  /** Used to calculate grpc-timeout at the point of sending,
+      or GRPC_MILLIS_INF_FUTURE if this batch does not need to send a
+      grpc-timeout */
+  grpc_millis deadline;
+} grpc_metadata_batch;
+
+void grpc_metadata_batch_init(grpc_metadata_batch* batch);
+void grpc_metadata_batch_destroy(grpc_metadata_batch* batch);
+void grpc_metadata_batch_clear(grpc_metadata_batch* batch);
+bool grpc_metadata_batch_is_empty(grpc_metadata_batch* batch);
+
+/* Returns the transport size of the batch. */
+size_t grpc_metadata_batch_size(grpc_metadata_batch* batch);
+
+/** Remove \a storage from the batch, unreffing the mdelem contained */
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_linked_mdelem* storage);
+void grpc_metadata_batch_remove(grpc_metadata_batch* batch,
+                                grpc_metadata_batch_callouts_index idx);
+
+/** Substitute a new mdelem for an old value */
+grpc_error* grpc_metadata_batch_substitute(grpc_metadata_batch* batch,
+                                           grpc_linked_mdelem* storage,
+                                           grpc_mdelem new_value);
+
+void grpc_metadata_batch_set_value(grpc_linked_mdelem* storage,
+                                   const grpc_slice& value);
+
+/** Add \a storage to the beginning of \a batch. storage->md is
+    assumed to be valid.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call. */
+grpc_error* grpc_metadata_batch_link_head(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_metadata_batch_link_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) GRPC_MUST_USE_RESULT;
+
+/** Add \a storage to the end of \a batch. storage->md is
+    assumed to be valid.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call. */
+grpc_error* grpc_metadata_batch_link_tail(grpc_metadata_batch* batch,
+                                          grpc_linked_mdelem* storage)
+    GRPC_MUST_USE_RESULT;
+grpc_error* grpc_metadata_batch_link_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) GRPC_MUST_USE_RESULT;
+
+/** Add \a elem_to_add as the first element in \a batch, using
+    \a storage as backing storage for the linked list element.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call.
+    Takes ownership of \a elem_to_add */
+grpc_error* grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
+
+// TODO(arjunroy, roth): Remove redundant methods.
+// add/link_head/tail are almost identical.
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  return grpc_metadata_batch_link_head(batch, storage, idx);
+}
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_head(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add, grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_add_head(batch, storage, idx);
+}
+
+/** Add \a elem_to_add as the last element in \a batch, using
+    \a storage as backing storage for the linked list element.
+    \a storage is owned by the caller and must survive for the
+    lifetime of batch. This usually means it should be around
+    for the lifetime of the call.
+    Takes ownership of \a elem_to_add */
+grpc_error* grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add) GRPC_MUST_USE_RESULT;
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_metadata_batch_callouts_index idx) {
+  return grpc_metadata_batch_link_tail(batch, storage, idx);
+}
+
+inline grpc_error* GRPC_MUST_USE_RESULT grpc_metadata_batch_add_tail(
+    grpc_metadata_batch* batch, grpc_linked_mdelem* storage,
+    grpc_mdelem elem_to_add, grpc_metadata_batch_callouts_index idx) {
+  GPR_DEBUG_ASSERT(!GRPC_MDISNULL(elem_to_add));
+  storage->md = elem_to_add;
+  return grpc_metadata_batch_add_tail(batch, storage, idx);
+}
+
+grpc_error* grpc_attach_md_to_error(grpc_error* src, grpc_mdelem md);
+
+typedef struct {
+  grpc_error* error;
+  grpc_mdelem md;
+} grpc_filtered_mdelem;
+
+#define GRPC_FILTERED_ERROR(error) \
+  { (error), GRPC_MDNULL }
+#define GRPC_FILTERED_MDELEM(md) \
+  { GRPC_ERROR_NONE, (md) }
+#define GRPC_FILTERED_REMOVE() \
+  { GRPC_ERROR_NONE, GRPC_MDNULL }
+
+typedef grpc_filtered_mdelem (*grpc_metadata_batch_filter_func)(
+    void* user_data, grpc_mdelem elem);
+grpc_error* grpc_metadata_batch_filter(
+    grpc_metadata_batch* batch, grpc_metadata_batch_filter_func func,
+    void* user_data, const char* composite_error_string) GRPC_MUST_USE_RESULT;
+
+#ifndef NDEBUG
+void grpc_metadata_batch_assert_ok(grpc_metadata_batch* comd);
+#else
+#define grpc_metadata_batch_assert_ok(comd) \
+  do {                                      \
+  } while (0)
+#endif
+
+/// Copies \a src to \a dst.  \a storage must point to an array of
+/// \a grpc_linked_mdelem structs of at least the same size as \a src.
+void grpc_metadata_batch_copy(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst,
+                              grpc_linked_mdelem* storage);
+
+void grpc_metadata_batch_move(grpc_metadata_batch* src,
+                              grpc_metadata_batch* dst);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.cc
new file mode 100644
index 0000000..dbc98f4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.cc	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/pid_controller.h"
+
+#include "src/core/lib/gpr/useful.h"
+
+namespace grpc_core {
+
+PidController::PidController(const Args& args)
+    : last_control_value_(args.initial_control_value()), args_(args) {}
+
+double PidController::Update(double error, double dt) {
+  if (dt <= 0) return last_control_value_;
+  /* integrate error using the trapezoid rule */
+  error_integral_ += dt * (last_error_ + error) * 0.5;
+  error_integral_ = GPR_CLAMP(error_integral_, -args_.integral_range(),
+                              args_.integral_range());
+  double diff_error = (error - last_error_) / dt;
+  /* calculate derivative of control value vs time */
+  double dc_dt = args_.gain_p() * error + args_.gain_i() * error_integral_ +
+                 args_.gain_d() * diff_error;
+  /* and perform trapezoidal integration */
+  double new_control_value =
+      last_control_value_ + dt * (last_dc_dt_ + dc_dt) * 0.5;
+  new_control_value = GPR_CLAMP(new_control_value, args_.min_control_value(),
+                                args_.max_control_value());
+  last_error_ = error;
+  last_dc_dt_ = dc_dt;
+  last_control_value_ = new_control_value;
+  return new_control_value;
+}
+
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.h
new file mode 100644
index 0000000..e26205b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/pid_controller.h	
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H
+#define GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <limits>
+
+/* \file Simple PID controller.
+   Implements a proportional-integral-derivative controller.
+   Used when we want to iteratively control a variable to converge some other
+   observed value to a 'set-point'.
+   Gains can be set to adjust sensitivity to current error (p), the integral
+   of error (i), and the derivative of error (d). */
+
+namespace grpc_core {
+
+class PidController {
+ public:
+  class Args {
+   public:
+    double gain_p() const { return gain_p_; }
+    double gain_i() const { return gain_i_; }
+    double gain_d() const { return gain_d_; }
+    double initial_control_value() const { return initial_control_value_; }
+    double min_control_value() const { return min_control_value_; }
+    double max_control_value() const { return max_control_value_; }
+    double integral_range() const { return integral_range_; }
+
+    Args& set_gain_p(double gain_p) {
+      gain_p_ = gain_p;
+      return *this;
+    }
+    Args& set_gain_i(double gain_i) {
+      gain_i_ = gain_i;
+      return *this;
+    }
+    Args& set_gain_d(double gain_d) {
+      gain_d_ = gain_d;
+      return *this;
+    }
+    Args& set_initial_control_value(double initial_control_value) {
+      initial_control_value_ = initial_control_value;
+      return *this;
+    }
+    Args& set_min_control_value(double min_control_value) {
+      min_control_value_ = min_control_value;
+      return *this;
+    }
+    Args& set_max_control_value(double max_control_value) {
+      max_control_value_ = max_control_value;
+      return *this;
+    }
+    Args& set_integral_range(double integral_range) {
+      integral_range_ = integral_range;
+      return *this;
+    }
+
+   private:
+    double gain_p_ = 0.0;
+    double gain_i_ = 0.0;
+    double gain_d_ = 0.0;
+    double initial_control_value_ = 0.0;
+    double min_control_value_ = std::numeric_limits<double>::min();
+    double max_control_value_ = std::numeric_limits<double>::max();
+    double integral_range_ = std::numeric_limits<double>::max();
+  };
+
+  explicit PidController(const Args& args);
+
+  /// Reset the controller internal state: useful when the environment has
+  /// changed significantly
+  void Reset() {
+    last_error_ = 0.0;
+    last_dc_dt_ = 0.0;
+    error_integral_ = 0.0;
+  }
+
+  /// Update the controller: given a current error estimate, and the time since
+  /// the last update, returns a new control value
+  double Update(double error, double dt);
+
+  /// Returns the last control value calculated
+  double last_control_value() const { return last_control_value_; }
+
+  /// Returns the current error integral (mostly for testing)
+  double error_integral() const { return error_integral_; }
+
+ private:
+  double last_error_ = 0.0;
+  double error_integral_ = 0.0;
+  double last_control_value_;
+  double last_dc_dt_ = 0.0;
+  const Args args_;
+};
+
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_PID_CONTROLLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.cc
new file mode 100644
index 0000000..0aa3296
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.cc	
@@ -0,0 +1,1230 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * WARNING: Auto-generated code.
+ *
+ * To make changes to this file, change
+ * tools/codegen/core/gen_static_metadata.py, and then re-run it.
+ *
+ * See metadata.h for an explanation of the interface here, and metadata.cc for
+ * an explanation of what's going on.
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/static_metadata.h"
+
+#include "src/core/lib/slice/slice_internal.h"
+
+static constexpr uint8_t g_bytes[] = {
+    58,  112, 97,  116, 104, 58,  109, 101, 116, 104, 111, 100, 58,  115, 116,
+    97,  116, 117, 115, 58,  97,  117, 116, 104, 111, 114, 105, 116, 121, 58,
+    115, 99,  104, 101, 109, 101, 116, 101, 103, 114, 112, 99,  45,  109, 101,
+    115, 115, 97,  103, 101, 103, 114, 112, 99,  45,  115, 116, 97,  116, 117,
+    115, 103, 114, 112, 99,  45,  112, 97,  121, 108, 111, 97,  100, 45,  98,
+    105, 110, 103, 114, 112, 99,  45,  101, 110, 99,  111, 100, 105, 110, 103,
+    103, 114, 112, 99,  45,  97,  99,  99,  101, 112, 116, 45,  101, 110, 99,
+    111, 100, 105, 110, 103, 103, 114, 112, 99,  45,  115, 101, 114, 118, 101,
+    114, 45,  115, 116, 97,  116, 115, 45,  98,  105, 110, 103, 114, 112, 99,
+    45,  116, 97,  103, 115, 45,  98,  105, 110, 103, 114, 112, 99,  45,  116,
+    114, 97,  99,  101, 45,  98,  105, 110, 99,  111, 110, 116, 101, 110, 116,
+    45,  116, 121, 112, 101, 99,  111, 110, 116, 101, 110, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 97,  99,  99,  101, 112, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  101, 110, 99,  111, 100, 105, 110, 103, 45,  114,
+    101, 113, 117, 101, 115, 116, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  115, 116, 114, 101, 97,  109, 45,  101, 110, 99,
+    111, 100, 105, 110, 103, 45,  114, 101, 113, 117, 101, 115, 116, 117, 115,
+    101, 114, 45,  97,  103, 101, 110, 116, 104, 111, 115, 116, 103, 114, 112,
+    99,  45,  112, 114, 101, 118, 105, 111, 117, 115, 45,  114, 112, 99,  45,
+    97,  116, 116, 101, 109, 112, 116, 115, 103, 114, 112, 99,  45,  114, 101,
+    116, 114, 121, 45,  112, 117, 115, 104, 98,  97,  99,  107, 45,  109, 115,
+    120, 45,  101, 110, 100, 112, 111, 105, 110, 116, 45,  108, 111, 97,  100,
+    45,  109, 101, 116, 114, 105, 99,  115, 45,  98,  105, 110, 103, 114, 112,
+    99,  45,  116, 105, 109, 101, 111, 117, 116, 49,  50,  51,  52,  103, 114,
+    112, 99,  46,  119, 97,  105, 116, 95,  102, 111, 114, 95,  114, 101, 97,
+    100, 121, 103, 114, 112, 99,  46,  116, 105, 109, 101, 111, 117, 116, 103,
+    114, 112, 99,  46,  109, 97,  120, 95,  114, 101, 113, 117, 101, 115, 116,
+    95,  109, 101, 115, 115, 97,  103, 101, 95,  98,  121, 116, 101, 115, 103,
+    114, 112, 99,  46,  109, 97,  120, 95,  114, 101, 115, 112, 111, 110, 115,
+    101, 95,  109, 101, 115, 115, 97,  103, 101, 95,  98,  121, 116, 101, 115,
+    47,  103, 114, 112, 99,  46,  108, 98,  46,  118, 49,  46,  76,  111, 97,
+    100, 66,  97,  108, 97,  110, 99,  101, 114, 47,  66,  97,  108, 97,  110,
+    99,  101, 76,  111, 97,  100, 47,  101, 110, 118, 111, 121, 46,  115, 101,
+    114, 118, 105, 99,  101, 46,  108, 111, 97,  100, 95,  115, 116, 97,  116,
+    115, 46,  118, 50,  46,  76,  111, 97,  100, 82,  101, 112, 111, 114, 116,
+    105, 110, 103, 83,  101, 114, 118, 105, 99,  101, 47,  83,  116, 114, 101,
+    97,  109, 76,  111, 97,  100, 83,  116, 97,  116, 115, 47,  103, 114, 112,
+    99,  46,  104, 101, 97,  108, 116, 104, 46,  118, 49,  46,  72,  101, 97,
+    108, 116, 104, 47,  87,  97,  116, 99,  104, 47,  101, 110, 118, 111, 121,
+    46,  115, 101, 114, 118, 105, 99,  101, 46,  100, 105, 115, 99,  111, 118,
+    101, 114, 121, 46,  118, 50,  46,  65,  103, 103, 114, 101, 103, 97,  116,
+    101, 100, 68,  105, 115, 99,  111, 118, 101, 114, 121, 83,  101, 114, 118,
+    105, 99,  101, 47,  83,  116, 114, 101, 97,  109, 65,  103, 103, 114, 101,
+    103, 97,  116, 101, 100, 82,  101, 115, 111, 117, 114, 99,  101, 115, 100,
+    101, 102, 108, 97,  116, 101, 103, 122, 105, 112, 115, 116, 114, 101, 97,
+    109, 47,  103, 122, 105, 112, 71,  69,  84,  80,  79,  83,  84,  47,  47,
+    105, 110, 100, 101, 120, 46,  104, 116, 109, 108, 104, 116, 116, 112, 104,
+    116, 116, 112, 115, 50,  48,  48,  50,  48,  52,  50,  48,  54,  51,  48,
+    52,  52,  48,  48,  52,  48,  52,  53,  48,  48,  97,  99,  99,  101, 112,
+    116, 45,  99,  104, 97,  114, 115, 101, 116, 103, 122, 105, 112, 44,  32,
+    100, 101, 102, 108, 97,  116, 101, 97,  99,  99,  101, 112, 116, 45,  108,
+    97,  110, 103, 117, 97,  103, 101, 97,  99,  99,  101, 112, 116, 45,  114,
+    97,  110, 103, 101, 115, 97,  99,  99,  101, 112, 116, 97,  99,  99,  101,
+    115, 115, 45,  99,  111, 110, 116, 114, 111, 108, 45,  97,  108, 108, 111,
+    119, 45,  111, 114, 105, 103, 105, 110, 97,  103, 101, 97,  108, 108, 111,
+    119, 97,  117, 116, 104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 99,
+    97,  99,  104, 101, 45,  99,  111, 110, 116, 114, 111, 108, 99,  111, 110,
+    116, 101, 110, 116, 45,  100, 105, 115, 112, 111, 115, 105, 116, 105, 111,
+    110, 99,  111, 110, 116, 101, 110, 116, 45,  108, 97,  110, 103, 117, 97,
+    103, 101, 99,  111, 110, 116, 101, 110, 116, 45,  108, 101, 110, 103, 116,
+    104, 99,  111, 110, 116, 101, 110, 116, 45,  108, 111, 99,  97,  116, 105,
+    111, 110, 99,  111, 110, 116, 101, 110, 116, 45,  114, 97,  110, 103, 101,
+    99,  111, 111, 107, 105, 101, 100, 97,  116, 101, 101, 116, 97,  103, 101,
+    120, 112, 101, 99,  116, 101, 120, 112, 105, 114, 101, 115, 102, 114, 111,
+    109, 105, 102, 45,  109, 97,  116, 99,  104, 105, 102, 45,  109, 111, 100,
+    105, 102, 105, 101, 100, 45,  115, 105, 110, 99,  101, 105, 102, 45,  110,
+    111, 110, 101, 45,  109, 97,  116, 99,  104, 105, 102, 45,  114, 97,  110,
+    103, 101, 105, 102, 45,  117, 110, 109, 111, 100, 105, 102, 105, 101, 100,
+    45,  115, 105, 110, 99,  101, 108, 97,  115, 116, 45,  109, 111, 100, 105,
+    102, 105, 101, 100, 108, 105, 110, 107, 108, 111, 99,  97,  116, 105, 111,
+    110, 109, 97,  120, 45,  102, 111, 114, 119, 97,  114, 100, 115, 112, 114,
+    111, 120, 121, 45,  97,  117, 116, 104, 101, 110, 116, 105, 99,  97,  116,
+    101, 112, 114, 111, 120, 121, 45,  97,  117, 116, 104, 111, 114, 105, 122,
+    97,  116, 105, 111, 110, 114, 97,  110, 103, 101, 114, 101, 102, 101, 114,
+    101, 114, 114, 101, 102, 114, 101, 115, 104, 114, 101, 116, 114, 121, 45,
+    97,  102, 116, 101, 114, 115, 101, 114, 118, 101, 114, 115, 101, 116, 45,
+    99,  111, 111, 107, 105, 101, 115, 116, 114, 105, 99,  116, 45,  116, 114,
+    97,  110, 115, 112, 111, 114, 116, 45,  115, 101, 99,  117, 114, 105, 116,
+    121, 116, 114, 97,  110, 115, 102, 101, 114, 45,  101, 110, 99,  111, 100,
+    105, 110, 103, 118, 97,  114, 121, 118, 105, 97,  119, 119, 119, 45,  97,
+    117, 116, 104, 101, 110, 116, 105, 99,  97,  116, 101, 48,  105, 100, 101,
+    110, 116, 105, 116, 121, 116, 114, 97,  105, 108, 101, 114, 115, 97,  112,
+    112, 108, 105, 99,  97,  116, 105, 111, 110, 47,  103, 114, 112, 99,  103,
+    114, 112, 99,  80,  85,  84,  108, 98,  45,  99,  111, 115, 116, 45,  98,
+    105, 110, 105, 100, 101, 110, 116, 105, 116, 121, 44,  100, 101, 102, 108,
+    97,  116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  103, 122, 105,
+    112, 100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105, 112, 105, 100,
+    101, 110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116, 101, 44,
+    103, 122, 105, 112};
+
+grpc_slice_refcount grpc_core::StaticSliceRefcount::kStaticSubRefcount;
+
+namespace grpc_core {
+struct StaticMetadataCtx {
+#ifndef NDEBUG
+  const uint64_t init_canary = kGrpcStaticMetadataInitCanary;
+#endif
+  StaticSliceRefcount refcounts[GRPC_STATIC_MDSTR_COUNT] = {
+
+      StaticSliceRefcount(0),   StaticSliceRefcount(1),
+      StaticSliceRefcount(2),   StaticSliceRefcount(3),
+      StaticSliceRefcount(4),   StaticSliceRefcount(5),
+      StaticSliceRefcount(6),   StaticSliceRefcount(7),
+      StaticSliceRefcount(8),   StaticSliceRefcount(9),
+      StaticSliceRefcount(10),  StaticSliceRefcount(11),
+      StaticSliceRefcount(12),  StaticSliceRefcount(13),
+      StaticSliceRefcount(14),  StaticSliceRefcount(15),
+      StaticSliceRefcount(16),  StaticSliceRefcount(17),
+      StaticSliceRefcount(18),  StaticSliceRefcount(19),
+      StaticSliceRefcount(20),  StaticSliceRefcount(21),
+      StaticSliceRefcount(22),  StaticSliceRefcount(23),
+      StaticSliceRefcount(24),  StaticSliceRefcount(25),
+      StaticSliceRefcount(26),  StaticSliceRefcount(27),
+      StaticSliceRefcount(28),  StaticSliceRefcount(29),
+      StaticSliceRefcount(30),  StaticSliceRefcount(31),
+      StaticSliceRefcount(32),  StaticSliceRefcount(33),
+      StaticSliceRefcount(34),  StaticSliceRefcount(35),
+      StaticSliceRefcount(36),  StaticSliceRefcount(37),
+      StaticSliceRefcount(38),  StaticSliceRefcount(39),
+      StaticSliceRefcount(40),  StaticSliceRefcount(41),
+      StaticSliceRefcount(42),  StaticSliceRefcount(43),
+      StaticSliceRefcount(44),  StaticSliceRefcount(45),
+      StaticSliceRefcount(46),  StaticSliceRefcount(47),
+      StaticSliceRefcount(48),  StaticSliceRefcount(49),
+      StaticSliceRefcount(50),  StaticSliceRefcount(51),
+      StaticSliceRefcount(52),  StaticSliceRefcount(53),
+      StaticSliceRefcount(54),  StaticSliceRefcount(55),
+      StaticSliceRefcount(56),  StaticSliceRefcount(57),
+      StaticSliceRefcount(58),  StaticSliceRefcount(59),
+      StaticSliceRefcount(60),  StaticSliceRefcount(61),
+      StaticSliceRefcount(62),  StaticSliceRefcount(63),
+      StaticSliceRefcount(64),  StaticSliceRefcount(65),
+      StaticSliceRefcount(66),  StaticSliceRefcount(67),
+      StaticSliceRefcount(68),  StaticSliceRefcount(69),
+      StaticSliceRefcount(70),  StaticSliceRefcount(71),
+      StaticSliceRefcount(72),  StaticSliceRefcount(73),
+      StaticSliceRefcount(74),  StaticSliceRefcount(75),
+      StaticSliceRefcount(76),  StaticSliceRefcount(77),
+      StaticSliceRefcount(78),  StaticSliceRefcount(79),
+      StaticSliceRefcount(80),  StaticSliceRefcount(81),
+      StaticSliceRefcount(82),  StaticSliceRefcount(83),
+      StaticSliceRefcount(84),  StaticSliceRefcount(85),
+      StaticSliceRefcount(86),  StaticSliceRefcount(87),
+      StaticSliceRefcount(88),  StaticSliceRefcount(89),
+      StaticSliceRefcount(90),  StaticSliceRefcount(91),
+      StaticSliceRefcount(92),  StaticSliceRefcount(93),
+      StaticSliceRefcount(94),  StaticSliceRefcount(95),
+      StaticSliceRefcount(96),  StaticSliceRefcount(97),
+      StaticSliceRefcount(98),  StaticSliceRefcount(99),
+      StaticSliceRefcount(100), StaticSliceRefcount(101),
+      StaticSliceRefcount(102), StaticSliceRefcount(103),
+      StaticSliceRefcount(104), StaticSliceRefcount(105),
+      StaticSliceRefcount(106), StaticSliceRefcount(107),
+  };
+
+  const StaticMetadataSlice slices[GRPC_STATIC_MDSTR_COUNT] = {
+
+      grpc_core::StaticMetadataSlice(&refcounts[0].base, 5, g_bytes + 0),
+      grpc_core::StaticMetadataSlice(&refcounts[1].base, 7, g_bytes + 5),
+      grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+      grpc_core::StaticMetadataSlice(&refcounts[3].base, 10, g_bytes + 19),
+      grpc_core::StaticMetadataSlice(&refcounts[4].base, 7, g_bytes + 29),
+      grpc_core::StaticMetadataSlice(&refcounts[5].base, 2, g_bytes + 36),
+      grpc_core::StaticMetadataSlice(&refcounts[6].base, 12, g_bytes + 38),
+      grpc_core::StaticMetadataSlice(&refcounts[7].base, 11, g_bytes + 50),
+      grpc_core::StaticMetadataSlice(&refcounts[8].base, 16, g_bytes + 61),
+      grpc_core::StaticMetadataSlice(&refcounts[9].base, 13, g_bytes + 77),
+      grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+      grpc_core::StaticMetadataSlice(&refcounts[11].base, 21, g_bytes + 110),
+      grpc_core::StaticMetadataSlice(&refcounts[12].base, 13, g_bytes + 131),
+      grpc_core::StaticMetadataSlice(&refcounts[13].base, 14, g_bytes + 144),
+      grpc_core::StaticMetadataSlice(&refcounts[14].base, 12, g_bytes + 158),
+      grpc_core::StaticMetadataSlice(&refcounts[15].base, 16, g_bytes + 170),
+      grpc_core::StaticMetadataSlice(&refcounts[16].base, 15, g_bytes + 186),
+      grpc_core::StaticMetadataSlice(&refcounts[17].base, 30, g_bytes + 201),
+      grpc_core::StaticMetadataSlice(&refcounts[18].base, 37, g_bytes + 231),
+      grpc_core::StaticMetadataSlice(&refcounts[19].base, 10, g_bytes + 268),
+      grpc_core::StaticMetadataSlice(&refcounts[20].base, 4, g_bytes + 278),
+      grpc_core::StaticMetadataSlice(&refcounts[21].base, 26, g_bytes + 282),
+      grpc_core::StaticMetadataSlice(&refcounts[22].base, 22, g_bytes + 308),
+      grpc_core::StaticMetadataSlice(&refcounts[23].base, 27, g_bytes + 330),
+      grpc_core::StaticMetadataSlice(&refcounts[24].base, 12, g_bytes + 357),
+      grpc_core::StaticMetadataSlice(&refcounts[25].base, 1, g_bytes + 369),
+      grpc_core::StaticMetadataSlice(&refcounts[26].base, 1, g_bytes + 370),
+      grpc_core::StaticMetadataSlice(&refcounts[27].base, 1, g_bytes + 371),
+      grpc_core::StaticMetadataSlice(&refcounts[28].base, 1, g_bytes + 372),
+      grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+      grpc_core::StaticMetadataSlice(&refcounts[30].base, 19, g_bytes + 373),
+      grpc_core::StaticMetadataSlice(&refcounts[31].base, 12, g_bytes + 392),
+      grpc_core::StaticMetadataSlice(&refcounts[32].base, 30, g_bytes + 404),
+      grpc_core::StaticMetadataSlice(&refcounts[33].base, 31, g_bytes + 434),
+      grpc_core::StaticMetadataSlice(&refcounts[34].base, 36, g_bytes + 465),
+      grpc_core::StaticMetadataSlice(&refcounts[35].base, 65, g_bytes + 501),
+      grpc_core::StaticMetadataSlice(&refcounts[36].base, 28, g_bytes + 566),
+      grpc_core::StaticMetadataSlice(&refcounts[37].base, 80, g_bytes + 594),
+      grpc_core::StaticMetadataSlice(&refcounts[38].base, 7, g_bytes + 674),
+      grpc_core::StaticMetadataSlice(&refcounts[39].base, 4, g_bytes + 681),
+      grpc_core::StaticMetadataSlice(&refcounts[40].base, 11, g_bytes + 685),
+      grpc_core::StaticMetadataSlice(&refcounts[41].base, 3, g_bytes + 696),
+      grpc_core::StaticMetadataSlice(&refcounts[42].base, 4, g_bytes + 699),
+      grpc_core::StaticMetadataSlice(&refcounts[43].base, 1, g_bytes + 703),
+      grpc_core::StaticMetadataSlice(&refcounts[44].base, 11, g_bytes + 704),
+      grpc_core::StaticMetadataSlice(&refcounts[45].base, 4, g_bytes + 715),
+      grpc_core::StaticMetadataSlice(&refcounts[46].base, 5, g_bytes + 719),
+      grpc_core::StaticMetadataSlice(&refcounts[47].base, 3, g_bytes + 724),
+      grpc_core::StaticMetadataSlice(&refcounts[48].base, 3, g_bytes + 727),
+      grpc_core::StaticMetadataSlice(&refcounts[49].base, 3, g_bytes + 730),
+      grpc_core::StaticMetadataSlice(&refcounts[50].base, 3, g_bytes + 733),
+      grpc_core::StaticMetadataSlice(&refcounts[51].base, 3, g_bytes + 736),
+      grpc_core::StaticMetadataSlice(&refcounts[52].base, 3, g_bytes + 739),
+      grpc_core::StaticMetadataSlice(&refcounts[53].base, 3, g_bytes + 742),
+      grpc_core::StaticMetadataSlice(&refcounts[54].base, 14, g_bytes + 745),
+      grpc_core::StaticMetadataSlice(&refcounts[55].base, 13, g_bytes + 759),
+      grpc_core::StaticMetadataSlice(&refcounts[56].base, 15, g_bytes + 772),
+      grpc_core::StaticMetadataSlice(&refcounts[57].base, 13, g_bytes + 787),
+      grpc_core::StaticMetadataSlice(&refcounts[58].base, 6, g_bytes + 800),
+      grpc_core::StaticMetadataSlice(&refcounts[59].base, 27, g_bytes + 806),
+      grpc_core::StaticMetadataSlice(&refcounts[60].base, 3, g_bytes + 833),
+      grpc_core::StaticMetadataSlice(&refcounts[61].base, 5, g_bytes + 836),
+      grpc_core::StaticMetadataSlice(&refcounts[62].base, 13, g_bytes + 841),
+      grpc_core::StaticMetadataSlice(&refcounts[63].base, 13, g_bytes + 854),
+      grpc_core::StaticMetadataSlice(&refcounts[64].base, 19, g_bytes + 867),
+      grpc_core::StaticMetadataSlice(&refcounts[65].base, 16, g_bytes + 886),
+      grpc_core::StaticMetadataSlice(&refcounts[66].base, 14, g_bytes + 902),
+      grpc_core::StaticMetadataSlice(&refcounts[67].base, 16, g_bytes + 916),
+      grpc_core::StaticMetadataSlice(&refcounts[68].base, 13, g_bytes + 932),
+      grpc_core::StaticMetadataSlice(&refcounts[69].base, 6, g_bytes + 945),
+      grpc_core::StaticMetadataSlice(&refcounts[70].base, 4, g_bytes + 951),
+      grpc_core::StaticMetadataSlice(&refcounts[71].base, 4, g_bytes + 955),
+      grpc_core::StaticMetadataSlice(&refcounts[72].base, 6, g_bytes + 959),
+      grpc_core::StaticMetadataSlice(&refcounts[73].base, 7, g_bytes + 965),
+      grpc_core::StaticMetadataSlice(&refcounts[74].base, 4, g_bytes + 972),
+      grpc_core::StaticMetadataSlice(&refcounts[75].base, 8, g_bytes + 976),
+      grpc_core::StaticMetadataSlice(&refcounts[76].base, 17, g_bytes + 984),
+      grpc_core::StaticMetadataSlice(&refcounts[77].base, 13, g_bytes + 1001),
+      grpc_core::StaticMetadataSlice(&refcounts[78].base, 8, g_bytes + 1014),
+      grpc_core::StaticMetadataSlice(&refcounts[79].base, 19, g_bytes + 1022),
+      grpc_core::StaticMetadataSlice(&refcounts[80].base, 13, g_bytes + 1041),
+      grpc_core::StaticMetadataSlice(&refcounts[81].base, 4, g_bytes + 1054),
+      grpc_core::StaticMetadataSlice(&refcounts[82].base, 8, g_bytes + 1058),
+      grpc_core::StaticMetadataSlice(&refcounts[83].base, 12, g_bytes + 1066),
+      grpc_core::StaticMetadataSlice(&refcounts[84].base, 18, g_bytes + 1078),
+      grpc_core::StaticMetadataSlice(&refcounts[85].base, 19, g_bytes + 1096),
+      grpc_core::StaticMetadataSlice(&refcounts[86].base, 5, g_bytes + 1115),
+      grpc_core::StaticMetadataSlice(&refcounts[87].base, 7, g_bytes + 1120),
+      grpc_core::StaticMetadataSlice(&refcounts[88].base, 7, g_bytes + 1127),
+      grpc_core::StaticMetadataSlice(&refcounts[89].base, 11, g_bytes + 1134),
+      grpc_core::StaticMetadataSlice(&refcounts[90].base, 6, g_bytes + 1145),
+      grpc_core::StaticMetadataSlice(&refcounts[91].base, 10, g_bytes + 1151),
+      grpc_core::StaticMetadataSlice(&refcounts[92].base, 25, g_bytes + 1161),
+      grpc_core::StaticMetadataSlice(&refcounts[93].base, 17, g_bytes + 1186),
+      grpc_core::StaticMetadataSlice(&refcounts[94].base, 4, g_bytes + 1203),
+      grpc_core::StaticMetadataSlice(&refcounts[95].base, 3, g_bytes + 1207),
+      grpc_core::StaticMetadataSlice(&refcounts[96].base, 16, g_bytes + 1210),
+      grpc_core::StaticMetadataSlice(&refcounts[97].base, 1, g_bytes + 1226),
+      grpc_core::StaticMetadataSlice(&refcounts[98].base, 8, g_bytes + 1227),
+      grpc_core::StaticMetadataSlice(&refcounts[99].base, 8, g_bytes + 1235),
+      grpc_core::StaticMetadataSlice(&refcounts[100].base, 16, g_bytes + 1243),
+      grpc_core::StaticMetadataSlice(&refcounts[101].base, 4, g_bytes + 1259),
+      grpc_core::StaticMetadataSlice(&refcounts[102].base, 3, g_bytes + 1263),
+      grpc_core::StaticMetadataSlice(&refcounts[103].base, 11, g_bytes + 1266),
+      grpc_core::StaticMetadataSlice(&refcounts[104].base, 16, g_bytes + 1277),
+      grpc_core::StaticMetadataSlice(&refcounts[105].base, 13, g_bytes + 1293),
+      grpc_core::StaticMetadataSlice(&refcounts[106].base, 12, g_bytes + 1306),
+      grpc_core::StaticMetadataSlice(&refcounts[107].base, 21, g_bytes + 1318),
+  };
+  StaticMetadata static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[3].base, 10, g_bytes + 19),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          0),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[1].base, 7, g_bytes + 5),
+          grpc_core::StaticMetadataSlice(&refcounts[41].base, 3, g_bytes + 696),
+          1),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[1].base, 7, g_bytes + 5),
+          grpc_core::StaticMetadataSlice(&refcounts[42].base, 4, g_bytes + 699),
+          2),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[0].base, 5, g_bytes + 0),
+          grpc_core::StaticMetadataSlice(&refcounts[43].base, 1, g_bytes + 703),
+          3),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[0].base, 5, g_bytes + 0),
+          grpc_core::StaticMetadataSlice(&refcounts[44].base, 11,
+                                         g_bytes + 704),
+          4),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[4].base, 7, g_bytes + 29),
+          grpc_core::StaticMetadataSlice(&refcounts[45].base, 4, g_bytes + 715),
+          5),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[4].base, 7, g_bytes + 29),
+          grpc_core::StaticMetadataSlice(&refcounts[46].base, 5, g_bytes + 719),
+          6),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[47].base, 3, g_bytes + 724),
+          7),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[48].base, 3, g_bytes + 727),
+          8),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[49].base, 3, g_bytes + 730),
+          9),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[50].base, 3, g_bytes + 733),
+          10),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[51].base, 3, g_bytes + 736),
+          11),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[52].base, 3, g_bytes + 739),
+          12),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[2].base, 7, g_bytes + 12),
+          grpc_core::StaticMetadataSlice(&refcounts[53].base, 3, g_bytes + 742),
+          13),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[54].base, 14,
+                                         g_bytes + 745),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          14),
+      StaticMetadata(grpc_core::StaticMetadataSlice(&refcounts[16].base, 15,
+                                                    g_bytes + 186),
+                     grpc_core::StaticMetadataSlice(&refcounts[55].base, 13,
+                                                    g_bytes + 759),
+                     15),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[56].base, 15,
+                                         g_bytes + 772),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          16),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[57].base, 13,
+                                         g_bytes + 787),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          17),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[58].base, 6, g_bytes + 800),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          18),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[59].base, 27,
+                                         g_bytes + 806),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          19),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[60].base, 3, g_bytes + 833),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          20),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[61].base, 5, g_bytes + 836),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          21),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[62].base, 13,
+                                         g_bytes + 841),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          22),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[63].base, 13,
+                                         g_bytes + 854),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          23),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[64].base, 19,
+                                         g_bytes + 867),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          24),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[15].base, 16,
+                                         g_bytes + 170),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          25),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[65].base, 16,
+                                         g_bytes + 886),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          26),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[66].base, 14,
+                                         g_bytes + 902),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          27),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[67].base, 16,
+                                         g_bytes + 916),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          28),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[68].base, 13,
+                                         g_bytes + 932),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          29),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[14].base, 12,
+                                         g_bytes + 158),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          30),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[69].base, 6, g_bytes + 945),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          31),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[70].base, 4, g_bytes + 951),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          32),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[71].base, 4, g_bytes + 955),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          33),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[72].base, 6, g_bytes + 959),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          34),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[73].base, 7, g_bytes + 965),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          35),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[74].base, 4, g_bytes + 972),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          36),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[20].base, 4, g_bytes + 278),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          37),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[75].base, 8, g_bytes + 976),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          38),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[76].base, 17,
+                                         g_bytes + 984),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          39),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[77].base, 13,
+                                         g_bytes + 1001),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          40),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[78].base, 8,
+                                         g_bytes + 1014),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          41),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[79].base, 19,
+                                         g_bytes + 1022),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          42),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[80].base, 13,
+                                         g_bytes + 1041),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          43),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[81].base, 4,
+                                         g_bytes + 1054),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          44),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[82].base, 8,
+                                         g_bytes + 1058),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          45),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[83].base, 12,
+                                         g_bytes + 1066),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          46),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[84].base, 18,
+                                         g_bytes + 1078),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          47),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[85].base, 19,
+                                         g_bytes + 1096),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          48),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[86].base, 5,
+                                         g_bytes + 1115),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          49),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[87].base, 7,
+                                         g_bytes + 1120),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          50),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[88].base, 7,
+                                         g_bytes + 1127),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          51),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[89].base, 11,
+                                         g_bytes + 1134),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          52),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[90].base, 6,
+                                         g_bytes + 1145),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          53),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[91].base, 10,
+                                         g_bytes + 1151),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          54),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[92].base, 25,
+                                         g_bytes + 1161),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          55),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[93].base, 17,
+                                         g_bytes + 1186),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          56),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[19].base, 10,
+                                         g_bytes + 268),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          57),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[94].base, 4,
+                                         g_bytes + 1203),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          58),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[95].base, 3,
+                                         g_bytes + 1207),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          59),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[96].base, 16,
+                                         g_bytes + 1210),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          60),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[7].base, 11, g_bytes + 50),
+          grpc_core::StaticMetadataSlice(&refcounts[97].base, 1,
+                                         g_bytes + 1226),
+          61),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[7].base, 11, g_bytes + 50),
+          grpc_core::StaticMetadataSlice(&refcounts[25].base, 1, g_bytes + 369),
+          62),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[7].base, 11, g_bytes + 50),
+          grpc_core::StaticMetadataSlice(&refcounts[26].base, 1, g_bytes + 370),
+          63),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[9].base, 13, g_bytes + 77),
+          grpc_core::StaticMetadataSlice(&refcounts[98].base, 8,
+                                         g_bytes + 1227),
+          64),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[9].base, 13, g_bytes + 77),
+          grpc_core::StaticMetadataSlice(&refcounts[39].base, 4, g_bytes + 681),
+          65),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[9].base, 13, g_bytes + 77),
+          grpc_core::StaticMetadataSlice(&refcounts[38].base, 7, g_bytes + 674),
+          66),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[5].base, 2, g_bytes + 36),
+          grpc_core::StaticMetadataSlice(&refcounts[99].base, 8,
+                                         g_bytes + 1235),
+          67),
+      StaticMetadata(grpc_core::StaticMetadataSlice(&refcounts[14].base, 12,
+                                                    g_bytes + 158),
+                     grpc_core::StaticMetadataSlice(&refcounts[100].base, 16,
+                                                    g_bytes + 1243),
+                     68),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[4].base, 7, g_bytes + 29),
+          grpc_core::StaticMetadataSlice(&refcounts[101].base, 4,
+                                         g_bytes + 1259),
+          69),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[1].base, 7, g_bytes + 5),
+          grpc_core::StaticMetadataSlice(&refcounts[102].base, 3,
+                                         g_bytes + 1263),
+          70),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[16].base, 15,
+                                         g_bytes + 186),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          71),
+      StaticMetadata(grpc_core::StaticMetadataSlice(&refcounts[15].base, 16,
+                                                    g_bytes + 170),
+                     grpc_core::StaticMetadataSlice(&refcounts[98].base, 8,
+                                                    g_bytes + 1227),
+                     72),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[15].base, 16,
+                                         g_bytes + 170),
+          grpc_core::StaticMetadataSlice(&refcounts[39].base, 4, g_bytes + 681),
+          73),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[103].base, 11,
+                                         g_bytes + 1266),
+          grpc_core::StaticMetadataSlice(&refcounts[29].base, 0, g_bytes + 373),
+          74),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[98].base, 8,
+                                         g_bytes + 1227),
+          75),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[38].base, 7, g_bytes + 674),
+          76),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[104].base, 16,
+                                         g_bytes + 1277),
+          77),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[39].base, 4, g_bytes + 681),
+          78),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[105].base, 13,
+                                         g_bytes + 1293),
+          79),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[106].base, 12,
+                                         g_bytes + 1306),
+          80),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[10].base, 20, g_bytes + 90),
+          grpc_core::StaticMetadataSlice(&refcounts[107].base, 21,
+                                         g_bytes + 1318),
+          81),
+      StaticMetadata(grpc_core::StaticMetadataSlice(&refcounts[16].base, 15,
+                                                    g_bytes + 186),
+                     grpc_core::StaticMetadataSlice(&refcounts[98].base, 8,
+                                                    g_bytes + 1227),
+                     82),
+      StaticMetadata(
+          grpc_core::StaticMetadataSlice(&refcounts[16].base, 15,
+                                         g_bytes + 186),
+          grpc_core::StaticMetadataSlice(&refcounts[39].base, 4, g_bytes + 681),
+          83),
+      StaticMetadata(grpc_core::StaticMetadataSlice(&refcounts[16].base, 15,
+                                                    g_bytes + 186),
+                     grpc_core::StaticMetadataSlice(&refcounts[105].base, 13,
+                                                    g_bytes + 1293),
+                     84),
+  };
+
+  /* Warning: the core static metadata currently operates under the soft
+  constraint that the first GRPC_CHTTP2_LAST_STATIC_ENTRY (61) entries must
+  contain metadata specified by the http2 hpack standard. The CHTTP2 transport
+  reads the core metadata with this assumption in mind. If the order of the core
+  static metadata is to be changed, then the CHTTP2 transport must be changed as
+  well to stop relying on the core metadata. */
+
+  grpc_mdelem static_mdelem_manifested[GRPC_STATIC_MDELEM_COUNT] = {
+      // clang-format off
+    /* GRPC_MDELEM_AUTHORITY_EMPTY: 
+     ":authority": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[0].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_METHOD_GET: 
+     ":method": "GET" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[1].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_METHOD_POST: 
+     ":method": "POST" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[2].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_PATH_SLASH: 
+     ":path": "/" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[3].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML: 
+     ":path": "/index.html" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[4].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_SCHEME_HTTP: 
+     ":scheme": "http" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[5].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_SCHEME_HTTPS: 
+     ":scheme": "https" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[6].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_200: 
+     ":status": "200" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[7].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_204: 
+     ":status": "204" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[8].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_206: 
+     ":status": "206" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[9].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_304: 
+     ":status": "304" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[10].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_400: 
+     ":status": "400" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[11].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_404: 
+     ":status": "404" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[12].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STATUS_500: 
+     ":status": "500" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[13].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_CHARSET_EMPTY: 
+     "accept-charset": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[14].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_ENCODING_GZIP_COMMA_DEFLATE: 
+     "accept-encoding": "gzip, deflate" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[15].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_LANGUAGE_EMPTY: 
+     "accept-language": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[16].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_RANGES_EMPTY: 
+     "accept-ranges": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[17].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_EMPTY: 
+     "accept": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[18].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY: 
+     "access-control-allow-origin": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[19].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_AGE_EMPTY: 
+     "age": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[20].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ALLOW_EMPTY: 
+     "allow": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[21].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_AUTHORIZATION_EMPTY: 
+     "authorization": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[22].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CACHE_CONTROL_EMPTY: 
+     "cache-control": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[23].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY: 
+     "content-disposition": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[24].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_ENCODING_EMPTY: 
+     "content-encoding": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[25].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY: 
+     "content-language": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[26].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_LENGTH_EMPTY: 
+     "content-length": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[27].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_LOCATION_EMPTY: 
+     "content-location": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[28].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_RANGE_EMPTY: 
+     "content-range": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[29].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_TYPE_EMPTY: 
+     "content-type": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[30].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_COOKIE_EMPTY: 
+     "cookie": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[31].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_DATE_EMPTY: 
+     "date": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[32].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ETAG_EMPTY: 
+     "etag": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[33].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_EXPECT_EMPTY: 
+     "expect": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[34].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_EXPIRES_EMPTY: 
+     "expires": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[35].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_FROM_EMPTY: 
+     "from": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[36].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_HOST_EMPTY: 
+     "host": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[37].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_IF_MATCH_EMPTY: 
+     "if-match": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[38].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY: 
+     "if-modified-since": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[39].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_IF_NONE_MATCH_EMPTY: 
+     "if-none-match": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[40].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_IF_RANGE_EMPTY: 
+     "if-range": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[41].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY: 
+     "if-unmodified-since": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[42].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_LAST_MODIFIED_EMPTY: 
+     "last-modified": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[43].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_LINK_EMPTY: 
+     "link": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[44].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_LOCATION_EMPTY: 
+     "location": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[45].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_MAX_FORWARDS_EMPTY: 
+     "max-forwards": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[46].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY: 
+     "proxy-authenticate": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[47].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY: 
+     "proxy-authorization": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[48].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_RANGE_EMPTY: 
+     "range": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[49].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_REFERER_EMPTY: 
+     "referer": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[50].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_REFRESH_EMPTY: 
+     "refresh": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[51].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_RETRY_AFTER_EMPTY: 
+     "retry-after": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[52].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_SERVER_EMPTY: 
+     "server": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[53].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_SET_COOKIE_EMPTY: 
+     "set-cookie": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[54].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY: 
+     "strict-transport-security": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[55].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_TRANSFER_ENCODING_EMPTY: 
+     "transfer-encoding": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[56].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_USER_AGENT_EMPTY: 
+     "user-agent": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[57].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_VARY_EMPTY: 
+     "vary": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[58].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_VIA_EMPTY: 
+     "via": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[59].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY: 
+     "www-authenticate": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[60].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_STATUS_0: 
+     "grpc-status": "0" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[61].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_STATUS_1: 
+     "grpc-status": "1" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[62].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_STATUS_2: 
+     "grpc-status": "2" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[63].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ENCODING_IDENTITY: 
+     "grpc-encoding": "identity" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[64].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ENCODING_GZIP: 
+     "grpc-encoding": "gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[65].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ENCODING_DEFLATE: 
+     "grpc-encoding": "deflate" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[66].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_TE_TRAILERS: 
+     "te": "trailers" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[67].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC: 
+     "content-type": "application/grpc" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[68].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_SCHEME_GRPC: 
+     ":scheme": "grpc" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[69].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_METHOD_PUT: 
+     ":method": "PUT" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[70].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_ENCODING_EMPTY: 
+     "accept-encoding": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[71].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_ENCODING_IDENTITY: 
+     "content-encoding": "identity" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[72].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_CONTENT_ENCODING_GZIP: 
+     "content-encoding": "gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[73].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_LB_COST_BIN_EMPTY: 
+     "lb-cost-bin": "" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[74].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY: 
+     "grpc-accept-encoding": "identity" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[75].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE: 
+     "grpc-accept-encoding": "deflate" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[76].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE: 
+     "grpc-accept-encoding": "identity,deflate" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[77].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP: 
+     "grpc-accept-encoding": "gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[78].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP: 
+     "grpc-accept-encoding": "identity,gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[79].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP: 
+     "grpc-accept-encoding": "deflate,gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[80].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP: 
+     "grpc-accept-encoding": "identity,deflate,gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[81].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY: 
+     "accept-encoding": "identity" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[82].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_ENCODING_GZIP: 
+     "accept-encoding": "gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[83].data(),
+        GRPC_MDELEM_STORAGE_STATIC),
+    /* GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP: 
+     "accept-encoding": "identity,gzip" */
+    GRPC_MAKE_MDELEM(
+        &static_mdelem_table[84].data(),
+        GRPC_MDELEM_STORAGE_STATIC)
+      // clang-format on
+  };
+};
+}  // namespace grpc_core
+
+namespace grpc_core {
+static StaticMetadataCtx* g_static_metadata_slice_ctx = nullptr;
+const StaticMetadataSlice* g_static_metadata_slice_table = nullptr;
+StaticSliceRefcount* g_static_metadata_slice_refcounts = nullptr;
+StaticMetadata* g_static_mdelem_table = nullptr;
+grpc_mdelem* g_static_mdelem_manifested = nullptr;
+#ifndef NDEBUG
+uint64_t StaticMetadataInitCanary() {
+  return g_static_metadata_slice_ctx->init_canary;
+}
+#endif
+}  // namespace grpc_core
+
+void grpc_init_static_metadata_ctx(void) {
+  grpc_core::g_static_metadata_slice_ctx = new grpc_core::StaticMetadataCtx();
+  grpc_core::g_static_metadata_slice_table =
+      grpc_core::g_static_metadata_slice_ctx->slices;
+  grpc_core::g_static_metadata_slice_refcounts =
+      grpc_core::g_static_metadata_slice_ctx->refcounts;
+  grpc_core::g_static_mdelem_table =
+      grpc_core::g_static_metadata_slice_ctx->static_mdelem_table;
+  grpc_core::g_static_mdelem_manifested =
+      grpc_core::g_static_metadata_slice_ctx->static_mdelem_manifested;
+}
+
+void grpc_destroy_static_metadata_ctx(void) {
+  delete grpc_core::g_static_metadata_slice_ctx;
+  grpc_core::g_static_metadata_slice_ctx = nullptr;
+  grpc_core::g_static_metadata_slice_table = nullptr;
+  grpc_core::g_static_metadata_slice_refcounts = nullptr;
+  grpc_core::g_static_mdelem_table = nullptr;
+  grpc_core::g_static_mdelem_manifested = nullptr;
+}
+
+uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8, 2, 4, 4};
+
+static const int8_t elems_r[] = {
+    15, 10, -8, 0,  2,  -43, -82, -43, 0,   4,   -8,  0,   0,  0,  8,  -2,
+    -9, 0,  0,  2,  1,  0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,   -66, 0,   -69, -70, -51, -73, 0,  32, 31, 30,
+    30, 29, 28, 27, 26, 25,  24,  23,  22,  21,  20,  19,  18, 17, 16, 16,
+    15, 14, 13, 12, 11, 10,  9,   8,   7,   6,   5,   4,   3,  2,  3,  2,
+    2,  7,  0,  0,  0,  0,   0,   0,   -6,  0};
+static uint32_t elems_phash(uint32_t i) {
+  i -= 43;
+  uint32_t x = i % 106;
+  uint32_t y = i / 106;
+  uint32_t h = x;
+  if (y < GPR_ARRAY_SIZE(elems_r)) {
+    uint32_t delta = (uint32_t)elems_r[y];
+    h += delta;
+  }
+  return h;
+}
+
+static const uint16_t elem_keys[] = {
+    263,   264,  265,  266,  267,  268,  269,  1118,  1119,  1757,  149,   150,
+    477,   478,  1649, 43,   44,   1010, 1011, 1767,  781,   782,   1541,  639,
+    1659,  853,  2081, 2189, 5861, 6077, 6185, 6401,  6509,  6617,  6725,  1783,
+    6833,  6941, 7049, 7157, 7265, 7373, 7481, 7589,  7697,  7805,  7913,  8021,
+    8129,  8237, 8345, 6293, 8453, 8561, 8669, 8777,  8885,  8993,  9101,  9209,
+    9317,  9425, 9533, 9641, 9749, 9857, 9965, 1178,  533,   10073, 10181, 210,
+    10289, 1184, 1185, 1186, 1187, 1070, 1826, 10397, 11153, 0,     0,     1718,
+    0,     1833, 0,    0,    0,    0,    353,  0,     0,     1612};
+static const uint8_t elem_idxs[] = {
+    7,  8,   9,   10, 11,  12, 13,  76,  78,  71,  1,  2,   5,   6,  25, 3,
+    4,  66,  65,  83, 62,  63, 30,  67,  73,  61,  57, 37,  14,  16, 17, 19,
+    20, 21,  22,  15, 23,  24, 26,  27,  28,  29,  31, 32,  33,  34, 35, 36,
+    38, 39,  40,  18, 41,  42, 43,  44,  45,  46,  47, 48,  49,  50, 51, 52,
+    53, 54,  55,  75, 69,  56, 58,  70,  59,  77,  79, 80,  81,  64, 82, 60,
+    74, 255, 255, 72, 255, 84, 255, 255, 255, 255, 0,  255, 255, 68};
+
+grpc_mdelem grpc_static_mdelem_for_static_strings(intptr_t a, intptr_t b) {
+  if (a == -1 || b == -1) return GRPC_MDNULL;
+  uint32_t k = static_cast<uint32_t>(a * 108 + b);
+  uint32_t h = elems_phash(k);
+  return h < GPR_ARRAY_SIZE(elem_keys) && elem_keys[h] == k &&
+                 elem_idxs[h] != 255
+             ? GRPC_MAKE_MDELEM(
+                   &grpc_static_mdelem_table()[elem_idxs[h]].data(),
+                   GRPC_MDELEM_STORAGE_STATIC)
+             : GRPC_MDNULL;
+}
+
+const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  75, 76, 77,
+                                                         78, 79, 80, 81};
+
+const uint8_t grpc_static_accept_stream_encoding_metadata[4] = {0, 82, 83, 84};
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.h
new file mode 100644
index 0000000..e88cf9f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/static_metadata.h	
@@ -0,0 +1,597 @@
+/*
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * WARNING: Auto-generated code.
+ *
+ * To make changes to this file, change
+ * tools/codegen/core/gen_static_metadata.py, and then re-run it.
+ *
+ * See metadata.h for an explanation of the interface here, and metadata.cc for
+ * an explanation of what's going on.
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <cstdint>
+
+#include "src/core/lib/transport/metadata.h"
+
+static_assert(
+    std::is_trivially_destructible<grpc_core::StaticMetadataSlice>::value,
+    "grpc_core::StaticMetadataSlice must be trivially destructible.");
+#define GRPC_STATIC_MDSTR_COUNT 108
+
+void grpc_init_static_metadata_ctx(void);
+void grpc_destroy_static_metadata_ctx(void);
+namespace grpc_core {
+#ifndef NDEBUG
+constexpr uint64_t kGrpcStaticMetadataInitCanary = 0xCAFEF00DC0FFEE11L;
+uint64_t StaticMetadataInitCanary();
+#endif
+extern const StaticMetadataSlice* g_static_metadata_slice_table;
+}
+inline const grpc_core::StaticMetadataSlice* grpc_static_slice_table() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_metadata_slice_table != nullptr);
+  return grpc_core::g_static_metadata_slice_table;
+}
+
+/* ":path" */
+#define GRPC_MDSTR_PATH (grpc_static_slice_table()[0])
+/* ":method" */
+#define GRPC_MDSTR_METHOD (grpc_static_slice_table()[1])
+/* ":status" */
+#define GRPC_MDSTR_STATUS (grpc_static_slice_table()[2])
+/* ":authority" */
+#define GRPC_MDSTR_AUTHORITY (grpc_static_slice_table()[3])
+/* ":scheme" */
+#define GRPC_MDSTR_SCHEME (grpc_static_slice_table()[4])
+/* "te" */
+#define GRPC_MDSTR_TE (grpc_static_slice_table()[5])
+/* "grpc-message" */
+#define GRPC_MDSTR_GRPC_MESSAGE (grpc_static_slice_table()[6])
+/* "grpc-status" */
+#define GRPC_MDSTR_GRPC_STATUS (grpc_static_slice_table()[7])
+/* "grpc-payload-bin" */
+#define GRPC_MDSTR_GRPC_PAYLOAD_BIN (grpc_static_slice_table()[8])
+/* "grpc-encoding" */
+#define GRPC_MDSTR_GRPC_ENCODING (grpc_static_slice_table()[9])
+/* "grpc-accept-encoding" */
+#define GRPC_MDSTR_GRPC_ACCEPT_ENCODING (grpc_static_slice_table()[10])
+/* "grpc-server-stats-bin" */
+#define GRPC_MDSTR_GRPC_SERVER_STATS_BIN (grpc_static_slice_table()[11])
+/* "grpc-tags-bin" */
+#define GRPC_MDSTR_GRPC_TAGS_BIN (grpc_static_slice_table()[12])
+/* "grpc-trace-bin" */
+#define GRPC_MDSTR_GRPC_TRACE_BIN (grpc_static_slice_table()[13])
+/* "content-type" */
+#define GRPC_MDSTR_CONTENT_TYPE (grpc_static_slice_table()[14])
+/* "content-encoding" */
+#define GRPC_MDSTR_CONTENT_ENCODING (grpc_static_slice_table()[15])
+/* "accept-encoding" */
+#define GRPC_MDSTR_ACCEPT_ENCODING (grpc_static_slice_table()[16])
+/* "grpc-internal-encoding-request" */
+#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST \
+  (grpc_static_slice_table()[17])
+/* "grpc-internal-stream-encoding-request" */
+#define GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST \
+  (grpc_static_slice_table()[18])
+/* "user-agent" */
+#define GRPC_MDSTR_USER_AGENT (grpc_static_slice_table()[19])
+/* "host" */
+#define GRPC_MDSTR_HOST (grpc_static_slice_table()[20])
+/* "grpc-previous-rpc-attempts" */
+#define GRPC_MDSTR_GRPC_PREVIOUS_RPC_ATTEMPTS (grpc_static_slice_table()[21])
+/* "grpc-retry-pushback-ms" */
+#define GRPC_MDSTR_GRPC_RETRY_PUSHBACK_MS (grpc_static_slice_table()[22])
+/* "x-endpoint-load-metrics-bin" */
+#define GRPC_MDSTR_X_ENDPOINT_LOAD_METRICS_BIN (grpc_static_slice_table()[23])
+/* "grpc-timeout" */
+#define GRPC_MDSTR_GRPC_TIMEOUT (grpc_static_slice_table()[24])
+/* "1" */
+#define GRPC_MDSTR_1 (grpc_static_slice_table()[25])
+/* "2" */
+#define GRPC_MDSTR_2 (grpc_static_slice_table()[26])
+/* "3" */
+#define GRPC_MDSTR_3 (grpc_static_slice_table()[27])
+/* "4" */
+#define GRPC_MDSTR_4 (grpc_static_slice_table()[28])
+/* "" */
+#define GRPC_MDSTR_EMPTY (grpc_static_slice_table()[29])
+/* "grpc.wait_for_ready" */
+#define GRPC_MDSTR_GRPC_DOT_WAIT_FOR_READY (grpc_static_slice_table()[30])
+/* "grpc.timeout" */
+#define GRPC_MDSTR_GRPC_DOT_TIMEOUT (grpc_static_slice_table()[31])
+/* "grpc.max_request_message_bytes" */
+#define GRPC_MDSTR_GRPC_DOT_MAX_REQUEST_MESSAGE_BYTES \
+  (grpc_static_slice_table()[32])
+/* "grpc.max_response_message_bytes" */
+#define GRPC_MDSTR_GRPC_DOT_MAX_RESPONSE_MESSAGE_BYTES \
+  (grpc_static_slice_table()[33])
+/* "/grpc.lb.v1.LoadBalancer/BalanceLoad" */
+#define GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD \
+  (grpc_static_slice_table()[34])
+/* "/envoy.service.load_stats.v2.LoadReportingService/StreamLoadStats" */
+#define GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_LOAD_STATS_DOT_V2_DOT_LOADREPORTINGSERVICE_SLASH_STREAMLOADSTATS \
+  (grpc_static_slice_table()[35])
+/* "/grpc.health.v1.Health/Watch" */
+#define GRPC_MDSTR_SLASH_GRPC_DOT_HEALTH_DOT_V1_DOT_HEALTH_SLASH_WATCH \
+  (grpc_static_slice_table()[36])
+/* "/envoy.service.discovery.v2.AggregatedDiscoveryService/StreamAggregatedResources"
+ */
+#define GRPC_MDSTR_SLASH_ENVOY_DOT_SERVICE_DOT_DISCOVERY_DOT_V2_DOT_AGGREGATEDDISCOVERYSERVICE_SLASH_STREAMAGGREGATEDRESOURCES \
+  (grpc_static_slice_table()[37])
+/* "deflate" */
+#define GRPC_MDSTR_DEFLATE (grpc_static_slice_table()[38])
+/* "gzip" */
+#define GRPC_MDSTR_GZIP (grpc_static_slice_table()[39])
+/* "stream/gzip" */
+#define GRPC_MDSTR_STREAM_SLASH_GZIP (grpc_static_slice_table()[40])
+/* "GET" */
+#define GRPC_MDSTR_GET (grpc_static_slice_table()[41])
+/* "POST" */
+#define GRPC_MDSTR_POST (grpc_static_slice_table()[42])
+/* "/" */
+#define GRPC_MDSTR_SLASH (grpc_static_slice_table()[43])
+/* "/index.html" */
+#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (grpc_static_slice_table()[44])
+/* "http" */
+#define GRPC_MDSTR_HTTP (grpc_static_slice_table()[45])
+/* "https" */
+#define GRPC_MDSTR_HTTPS (grpc_static_slice_table()[46])
+/* "200" */
+#define GRPC_MDSTR_200 (grpc_static_slice_table()[47])
+/* "204" */
+#define GRPC_MDSTR_204 (grpc_static_slice_table()[48])
+/* "206" */
+#define GRPC_MDSTR_206 (grpc_static_slice_table()[49])
+/* "304" */
+#define GRPC_MDSTR_304 (grpc_static_slice_table()[50])
+/* "400" */
+#define GRPC_MDSTR_400 (grpc_static_slice_table()[51])
+/* "404" */
+#define GRPC_MDSTR_404 (grpc_static_slice_table()[52])
+/* "500" */
+#define GRPC_MDSTR_500 (grpc_static_slice_table()[53])
+/* "accept-charset" */
+#define GRPC_MDSTR_ACCEPT_CHARSET (grpc_static_slice_table()[54])
+/* "gzip, deflate" */
+#define GRPC_MDSTR_GZIP_COMMA_DEFLATE (grpc_static_slice_table()[55])
+/* "accept-language" */
+#define GRPC_MDSTR_ACCEPT_LANGUAGE (grpc_static_slice_table()[56])
+/* "accept-ranges" */
+#define GRPC_MDSTR_ACCEPT_RANGES (grpc_static_slice_table()[57])
+/* "accept" */
+#define GRPC_MDSTR_ACCEPT (grpc_static_slice_table()[58])
+/* "access-control-allow-origin" */
+#define GRPC_MDSTR_ACCESS_CONTROL_ALLOW_ORIGIN (grpc_static_slice_table()[59])
+/* "age" */
+#define GRPC_MDSTR_AGE (grpc_static_slice_table()[60])
+/* "allow" */
+#define GRPC_MDSTR_ALLOW (grpc_static_slice_table()[61])
+/* "authorization" */
+#define GRPC_MDSTR_AUTHORIZATION (grpc_static_slice_table()[62])
+/* "cache-control" */
+#define GRPC_MDSTR_CACHE_CONTROL (grpc_static_slice_table()[63])
+/* "content-disposition" */
+#define GRPC_MDSTR_CONTENT_DISPOSITION (grpc_static_slice_table()[64])
+/* "content-language" */
+#define GRPC_MDSTR_CONTENT_LANGUAGE (grpc_static_slice_table()[65])
+/* "content-length" */
+#define GRPC_MDSTR_CONTENT_LENGTH (grpc_static_slice_table()[66])
+/* "content-location" */
+#define GRPC_MDSTR_CONTENT_LOCATION (grpc_static_slice_table()[67])
+/* "content-range" */
+#define GRPC_MDSTR_CONTENT_RANGE (grpc_static_slice_table()[68])
+/* "cookie" */
+#define GRPC_MDSTR_COOKIE (grpc_static_slice_table()[69])
+/* "date" */
+#define GRPC_MDSTR_DATE (grpc_static_slice_table()[70])
+/* "etag" */
+#define GRPC_MDSTR_ETAG (grpc_static_slice_table()[71])
+/* "expect" */
+#define GRPC_MDSTR_EXPECT (grpc_static_slice_table()[72])
+/* "expires" */
+#define GRPC_MDSTR_EXPIRES (grpc_static_slice_table()[73])
+/* "from" */
+#define GRPC_MDSTR_FROM (grpc_static_slice_table()[74])
+/* "if-match" */
+#define GRPC_MDSTR_IF_MATCH (grpc_static_slice_table()[75])
+/* "if-modified-since" */
+#define GRPC_MDSTR_IF_MODIFIED_SINCE (grpc_static_slice_table()[76])
+/* "if-none-match" */
+#define GRPC_MDSTR_IF_NONE_MATCH (grpc_static_slice_table()[77])
+/* "if-range" */
+#define GRPC_MDSTR_IF_RANGE (grpc_static_slice_table()[78])
+/* "if-unmodified-since" */
+#define GRPC_MDSTR_IF_UNMODIFIED_SINCE (grpc_static_slice_table()[79])
+/* "last-modified" */
+#define GRPC_MDSTR_LAST_MODIFIED (grpc_static_slice_table()[80])
+/* "link" */
+#define GRPC_MDSTR_LINK (grpc_static_slice_table()[81])
+/* "location" */
+#define GRPC_MDSTR_LOCATION (grpc_static_slice_table()[82])
+/* "max-forwards" */
+#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table()[83])
+/* "proxy-authenticate" */
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table()[84])
+/* "proxy-authorization" */
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table()[85])
+/* "range" */
+#define GRPC_MDSTR_RANGE (grpc_static_slice_table()[86])
+/* "referer" */
+#define GRPC_MDSTR_REFERER (grpc_static_slice_table()[87])
+/* "refresh" */
+#define GRPC_MDSTR_REFRESH (grpc_static_slice_table()[88])
+/* "retry-after" */
+#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table()[89])
+/* "server" */
+#define GRPC_MDSTR_SERVER (grpc_static_slice_table()[90])
+/* "set-cookie" */
+#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table()[91])
+/* "strict-transport-security" */
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table()[92])
+/* "transfer-encoding" */
+#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table()[93])
+/* "vary" */
+#define GRPC_MDSTR_VARY (grpc_static_slice_table()[94])
+/* "via" */
+#define GRPC_MDSTR_VIA (grpc_static_slice_table()[95])
+/* "www-authenticate" */
+#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table()[96])
+/* "0" */
+#define GRPC_MDSTR_0 (grpc_static_slice_table()[97])
+/* "identity" */
+#define GRPC_MDSTR_IDENTITY (grpc_static_slice_table()[98])
+/* "trailers" */
+#define GRPC_MDSTR_TRAILERS (grpc_static_slice_table()[99])
+/* "application/grpc" */
+#define GRPC_MDSTR_APPLICATION_SLASH_GRPC (grpc_static_slice_table()[100])
+/* "grpc" */
+#define GRPC_MDSTR_GRPC (grpc_static_slice_table()[101])
+/* "PUT" */
+#define GRPC_MDSTR_PUT (grpc_static_slice_table()[102])
+/* "lb-cost-bin" */
+#define GRPC_MDSTR_LB_COST_BIN (grpc_static_slice_table()[103])
+/* "identity,deflate" */
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table()[104])
+/* "identity,gzip" */
+#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table()[105])
+/* "deflate,gzip" */
+#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table()[106])
+/* "identity,deflate,gzip" */
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
+  (grpc_static_slice_table()[107])
+
+namespace grpc_core {
+struct StaticSliceRefcount;
+extern StaticSliceRefcount* g_static_metadata_slice_refcounts;
+}  // namespace grpc_core
+inline grpc_core::StaticSliceRefcount* grpc_static_metadata_refcounts() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_metadata_slice_refcounts != nullptr);
+  return grpc_core::g_static_metadata_slice_refcounts;
+}
+
+#define GRPC_IS_STATIC_METADATA_STRING(slice) \
+  ((slice).refcount != NULL &&                \
+   (slice).refcount->GetType() == grpc_slice_refcount::Type::STATIC)
+
+#define GRPC_STATIC_METADATA_INDEX(static_slice)                              \
+  (reinterpret_cast<grpc_core::StaticSliceRefcount*>((static_slice).refcount) \
+       ->index)
+
+#define GRPC_STATIC_MDELEM_COUNT 85
+
+namespace grpc_core {
+extern StaticMetadata* g_static_mdelem_table;
+extern grpc_mdelem* g_static_mdelem_manifested;
+}  // namespace grpc_core
+inline grpc_core::StaticMetadata* grpc_static_mdelem_table() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_mdelem_table != nullptr);
+  return grpc_core::g_static_mdelem_table;
+}
+inline grpc_mdelem* grpc_static_mdelem_manifested() {
+  GPR_DEBUG_ASSERT(grpc_core::StaticMetadataInitCanary() ==
+                   grpc_core::kGrpcStaticMetadataInitCanary);
+  GPR_DEBUG_ASSERT(grpc_core::g_static_mdelem_manifested != nullptr);
+  return grpc_core::g_static_mdelem_manifested;
+}
+
+extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
+/* ":authority": "" */
+#define GRPC_MDELEM_AUTHORITY_EMPTY (grpc_static_mdelem_manifested()[0])
+/* ":method": "GET" */
+#define GRPC_MDELEM_METHOD_GET (grpc_static_mdelem_manifested()[1])
+/* ":method": "POST" */
+#define GRPC_MDELEM_METHOD_POST (grpc_static_mdelem_manifested()[2])
+/* ":path": "/" */
+#define GRPC_MDELEM_PATH_SLASH (grpc_static_mdelem_manifested()[3])
+/* ":path": "/index.html" */
+#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML \
+  (grpc_static_mdelem_manifested()[4])
+/* ":scheme": "http" */
+#define GRPC_MDELEM_SCHEME_HTTP (grpc_static_mdelem_manifested()[5])
+/* ":scheme": "https" */
+#define GRPC_MDELEM_SCHEME_HTTPS (grpc_static_mdelem_manifested()[6])
+/* ":status": "200" */
+#define GRPC_MDELEM_STATUS_200 (grpc_static_mdelem_manifested()[7])
+/* ":status": "204" */
+#define GRPC_MDELEM_STATUS_204 (grpc_static_mdelem_manifested()[8])
+/* ":status": "206" */
+#define GRPC_MDELEM_STATUS_206 (grpc_static_mdelem_manifested()[9])
+/* ":status": "304" */
+#define GRPC_MDELEM_STATUS_304 (grpc_static_mdelem_manifested()[10])
+/* ":status": "400" */
+#define GRPC_MDELEM_STATUS_400 (grpc_static_mdelem_manifested()[11])
+/* ":status": "404" */
+#define GRPC_MDELEM_STATUS_404 (grpc_static_mdelem_manifested()[12])
+/* ":status": "500" */
+#define GRPC_MDELEM_STATUS_500 (grpc_static_mdelem_manifested()[13])
+/* "accept-charset": "" */
+#define GRPC_MDELEM_ACCEPT_CHARSET_EMPTY (grpc_static_mdelem_manifested()[14])
+/* "accept-encoding": "gzip, deflate" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP_COMMA_DEFLATE \
+  (grpc_static_mdelem_manifested()[15])
+/* "accept-language": "" */
+#define GRPC_MDELEM_ACCEPT_LANGUAGE_EMPTY (grpc_static_mdelem_manifested()[16])
+/* "accept-ranges": "" */
+#define GRPC_MDELEM_ACCEPT_RANGES_EMPTY (grpc_static_mdelem_manifested()[17])
+/* "accept": "" */
+#define GRPC_MDELEM_ACCEPT_EMPTY (grpc_static_mdelem_manifested()[18])
+/* "access-control-allow-origin": "" */
+#define GRPC_MDELEM_ACCESS_CONTROL_ALLOW_ORIGIN_EMPTY \
+  (grpc_static_mdelem_manifested()[19])
+/* "age": "" */
+#define GRPC_MDELEM_AGE_EMPTY (grpc_static_mdelem_manifested()[20])
+/* "allow": "" */
+#define GRPC_MDELEM_ALLOW_EMPTY (grpc_static_mdelem_manifested()[21])
+/* "authorization": "" */
+#define GRPC_MDELEM_AUTHORIZATION_EMPTY (grpc_static_mdelem_manifested()[22])
+/* "cache-control": "" */
+#define GRPC_MDELEM_CACHE_CONTROL_EMPTY (grpc_static_mdelem_manifested()[23])
+/* "content-disposition": "" */
+#define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY \
+  (grpc_static_mdelem_manifested()[24])
+/* "content-encoding": "" */
+#define GRPC_MDELEM_CONTENT_ENCODING_EMPTY (grpc_static_mdelem_manifested()[25])
+/* "content-language": "" */
+#define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY (grpc_static_mdelem_manifested()[26])
+/* "content-length": "" */
+#define GRPC_MDELEM_CONTENT_LENGTH_EMPTY (grpc_static_mdelem_manifested()[27])
+/* "content-location": "" */
+#define GRPC_MDELEM_CONTENT_LOCATION_EMPTY (grpc_static_mdelem_manifested()[28])
+/* "content-range": "" */
+#define GRPC_MDELEM_CONTENT_RANGE_EMPTY (grpc_static_mdelem_manifested()[29])
+/* "content-type": "" */
+#define GRPC_MDELEM_CONTENT_TYPE_EMPTY (grpc_static_mdelem_manifested()[30])
+/* "cookie": "" */
+#define GRPC_MDELEM_COOKIE_EMPTY (grpc_static_mdelem_manifested()[31])
+/* "date": "" */
+#define GRPC_MDELEM_DATE_EMPTY (grpc_static_mdelem_manifested()[32])
+/* "etag": "" */
+#define GRPC_MDELEM_ETAG_EMPTY (grpc_static_mdelem_manifested()[33])
+/* "expect": "" */
+#define GRPC_MDELEM_EXPECT_EMPTY (grpc_static_mdelem_manifested()[34])
+/* "expires": "" */
+#define GRPC_MDELEM_EXPIRES_EMPTY (grpc_static_mdelem_manifested()[35])
+/* "from": "" */
+#define GRPC_MDELEM_FROM_EMPTY (grpc_static_mdelem_manifested()[36])
+/* "host": "" */
+#define GRPC_MDELEM_HOST_EMPTY (grpc_static_mdelem_manifested()[37])
+/* "if-match": "" */
+#define GRPC_MDELEM_IF_MATCH_EMPTY (grpc_static_mdelem_manifested()[38])
+/* "if-modified-since": "" */
+#define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY \
+  (grpc_static_mdelem_manifested()[39])
+/* "if-none-match": "" */
+#define GRPC_MDELEM_IF_NONE_MATCH_EMPTY (grpc_static_mdelem_manifested()[40])
+/* "if-range": "" */
+#define GRPC_MDELEM_IF_RANGE_EMPTY (grpc_static_mdelem_manifested()[41])
+/* "if-unmodified-since": "" */
+#define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY \
+  (grpc_static_mdelem_manifested()[42])
+/* "last-modified": "" */
+#define GRPC_MDELEM_LAST_MODIFIED_EMPTY (grpc_static_mdelem_manifested()[43])
+/* "link": "" */
+#define GRPC_MDELEM_LINK_EMPTY (grpc_static_mdelem_manifested()[44])
+/* "location": "" */
+#define GRPC_MDELEM_LOCATION_EMPTY (grpc_static_mdelem_manifested()[45])
+/* "max-forwards": "" */
+#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (grpc_static_mdelem_manifested()[46])
+/* "proxy-authenticate": "" */
+#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY \
+  (grpc_static_mdelem_manifested()[47])
+/* "proxy-authorization": "" */
+#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY \
+  (grpc_static_mdelem_manifested()[48])
+/* "range": "" */
+#define GRPC_MDELEM_RANGE_EMPTY (grpc_static_mdelem_manifested()[49])
+/* "referer": "" */
+#define GRPC_MDELEM_REFERER_EMPTY (grpc_static_mdelem_manifested()[50])
+/* "refresh": "" */
+#define GRPC_MDELEM_REFRESH_EMPTY (grpc_static_mdelem_manifested()[51])
+/* "retry-after": "" */
+#define GRPC_MDELEM_RETRY_AFTER_EMPTY (grpc_static_mdelem_manifested()[52])
+/* "server": "" */
+#define GRPC_MDELEM_SERVER_EMPTY (grpc_static_mdelem_manifested()[53])
+/* "set-cookie": "" */
+#define GRPC_MDELEM_SET_COOKIE_EMPTY (grpc_static_mdelem_manifested()[54])
+/* "strict-transport-security": "" */
+#define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
+  (grpc_static_mdelem_manifested()[55])
+/* "transfer-encoding": "" */
+#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY \
+  (grpc_static_mdelem_manifested()[56])
+/* "user-agent": "" */
+#define GRPC_MDELEM_USER_AGENT_EMPTY (grpc_static_mdelem_manifested()[57])
+/* "vary": "" */
+#define GRPC_MDELEM_VARY_EMPTY (grpc_static_mdelem_manifested()[58])
+/* "via": "" */
+#define GRPC_MDELEM_VIA_EMPTY (grpc_static_mdelem_manifested()[59])
+/* "www-authenticate": "" */
+#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (grpc_static_mdelem_manifested()[60])
+/* "grpc-status": "0" */
+#define GRPC_MDELEM_GRPC_STATUS_0 (grpc_static_mdelem_manifested()[61])
+/* "grpc-status": "1" */
+#define GRPC_MDELEM_GRPC_STATUS_1 (grpc_static_mdelem_manifested()[62])
+/* "grpc-status": "2" */
+#define GRPC_MDELEM_GRPC_STATUS_2 (grpc_static_mdelem_manifested()[63])
+/* "grpc-encoding": "identity" */
+#define GRPC_MDELEM_GRPC_ENCODING_IDENTITY (grpc_static_mdelem_manifested()[64])
+/* "grpc-encoding": "gzip" */
+#define GRPC_MDELEM_GRPC_ENCODING_GZIP (grpc_static_mdelem_manifested()[65])
+/* "grpc-encoding": "deflate" */
+#define GRPC_MDELEM_GRPC_ENCODING_DEFLATE (grpc_static_mdelem_manifested()[66])
+/* "te": "trailers" */
+#define GRPC_MDELEM_TE_TRAILERS (grpc_static_mdelem_manifested()[67])
+/* "content-type": "application/grpc" */
+#define GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC \
+  (grpc_static_mdelem_manifested()[68])
+/* ":scheme": "grpc" */
+#define GRPC_MDELEM_SCHEME_GRPC (grpc_static_mdelem_manifested()[69])
+/* ":method": "PUT" */
+#define GRPC_MDELEM_METHOD_PUT (grpc_static_mdelem_manifested()[70])
+/* "accept-encoding": "" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_EMPTY (grpc_static_mdelem_manifested()[71])
+/* "content-encoding": "identity" */
+#define GRPC_MDELEM_CONTENT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[72])
+/* "content-encoding": "gzip" */
+#define GRPC_MDELEM_CONTENT_ENCODING_GZIP (grpc_static_mdelem_manifested()[73])
+/* "lb-cost-bin": "" */
+#define GRPC_MDELEM_LB_COST_BIN_EMPTY (grpc_static_mdelem_manifested()[74])
+/* "grpc-accept-encoding": "identity" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[75])
+/* "grpc-accept-encoding": "deflate" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE \
+  (grpc_static_mdelem_manifested()[76])
+/* "grpc-accept-encoding": "identity,deflate" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE \
+  (grpc_static_mdelem_manifested()[77])
+/* "grpc-accept-encoding": "gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP \
+  (grpc_static_mdelem_manifested()[78])
+/* "grpc-accept-encoding": "identity,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[79])
+/* "grpc-accept-encoding": "deflate,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[80])
+/* "grpc-accept-encoding": "identity,deflate,gzip" */
+#define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[81])
+/* "accept-encoding": "identity" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY \
+  (grpc_static_mdelem_manifested()[82])
+/* "accept-encoding": "gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP (grpc_static_mdelem_manifested()[83])
+/* "accept-encoding": "identity,gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
+  (grpc_static_mdelem_manifested()[84])
+
+grpc_mdelem grpc_static_mdelem_for_static_strings(intptr_t a, intptr_t b);
+typedef enum {
+  GRPC_BATCH_PATH,
+  GRPC_BATCH_METHOD,
+  GRPC_BATCH_STATUS,
+  GRPC_BATCH_AUTHORITY,
+  GRPC_BATCH_SCHEME,
+  GRPC_BATCH_TE,
+  GRPC_BATCH_GRPC_MESSAGE,
+  GRPC_BATCH_GRPC_STATUS,
+  GRPC_BATCH_GRPC_PAYLOAD_BIN,
+  GRPC_BATCH_GRPC_ENCODING,
+  GRPC_BATCH_GRPC_ACCEPT_ENCODING,
+  GRPC_BATCH_GRPC_SERVER_STATS_BIN,
+  GRPC_BATCH_GRPC_TAGS_BIN,
+  GRPC_BATCH_GRPC_TRACE_BIN,
+  GRPC_BATCH_CONTENT_TYPE,
+  GRPC_BATCH_CONTENT_ENCODING,
+  GRPC_BATCH_ACCEPT_ENCODING,
+  GRPC_BATCH_GRPC_INTERNAL_ENCODING_REQUEST,
+  GRPC_BATCH_GRPC_INTERNAL_STREAM_ENCODING_REQUEST,
+  GRPC_BATCH_USER_AGENT,
+  GRPC_BATCH_HOST,
+  GRPC_BATCH_GRPC_PREVIOUS_RPC_ATTEMPTS,
+  GRPC_BATCH_GRPC_RETRY_PUSHBACK_MS,
+  GRPC_BATCH_X_ENDPOINT_LOAD_METRICS_BIN,
+  GRPC_BATCH_CALLOUTS_COUNT
+} grpc_metadata_batch_callouts_index;
+
+typedef union {
+  struct grpc_linked_mdelem* array[GRPC_BATCH_CALLOUTS_COUNT];
+  struct {
+    struct grpc_linked_mdelem* path;
+    struct grpc_linked_mdelem* method;
+    struct grpc_linked_mdelem* status;
+    struct grpc_linked_mdelem* authority;
+    struct grpc_linked_mdelem* scheme;
+    struct grpc_linked_mdelem* te;
+    struct grpc_linked_mdelem* grpc_message;
+    struct grpc_linked_mdelem* grpc_status;
+    struct grpc_linked_mdelem* grpc_payload_bin;
+    struct grpc_linked_mdelem* grpc_encoding;
+    struct grpc_linked_mdelem* grpc_accept_encoding;
+    struct grpc_linked_mdelem* grpc_server_stats_bin;
+    struct grpc_linked_mdelem* grpc_tags_bin;
+    struct grpc_linked_mdelem* grpc_trace_bin;
+    struct grpc_linked_mdelem* content_type;
+    struct grpc_linked_mdelem* content_encoding;
+    struct grpc_linked_mdelem* accept_encoding;
+    struct grpc_linked_mdelem* grpc_internal_encoding_request;
+    struct grpc_linked_mdelem* grpc_internal_stream_encoding_request;
+    struct grpc_linked_mdelem* user_agent;
+    struct grpc_linked_mdelem* host;
+    struct grpc_linked_mdelem* grpc_previous_rpc_attempts;
+    struct grpc_linked_mdelem* grpc_retry_pushback_ms;
+    struct grpc_linked_mdelem* x_endpoint_load_metrics_bin;
+  } named;
+} grpc_metadata_batch_callouts;
+
+#define GRPC_BATCH_INDEX_OF(slice)                                             \
+  (GRPC_IS_STATIC_METADATA_STRING((slice)) &&                                  \
+           reinterpret_cast<grpc_core::StaticSliceRefcount*>((slice).refcount) \
+                   ->index <= static_cast<uint32_t>(GRPC_BATCH_CALLOUTS_COUNT) \
+       ? static_cast<grpc_metadata_batch_callouts_index>(                      \
+             reinterpret_cast<grpc_core::StaticSliceRefcount*>(                \
+                 (slice).refcount)                                             \
+                 ->index)                                                      \
+       : GRPC_BATCH_CALLOUTS_COUNT)
+
+extern const uint8_t grpc_static_accept_encoding_metadata[8];
+#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table()                         \
+                         [grpc_static_accept_encoding_metadata[(algs)]] \
+                             .data(),                                   \
+                    GRPC_MDELEM_STORAGE_STATIC))
+
+extern const uint8_t grpc_static_accept_stream_encoding_metadata[4];
+#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table()                                \
+                         [grpc_static_accept_stream_encoding_metadata[(algs)]] \
+                             .data(),                                          \
+                    GRPC_MDELEM_STORAGE_STATIC))
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.cc
new file mode 100644
index 0000000..5f86dac
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.cc	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/status_conversion.h"
+
+grpc_http2_error_code grpc_status_to_http2_error(grpc_status_code status) {
+  switch (status) {
+    case GRPC_STATUS_OK:
+      return GRPC_HTTP2_NO_ERROR;
+    case GRPC_STATUS_CANCELLED:
+      return GRPC_HTTP2_CANCEL;
+    case GRPC_STATUS_DEADLINE_EXCEEDED:
+      return GRPC_HTTP2_CANCEL;
+    case GRPC_STATUS_RESOURCE_EXHAUSTED:
+      return GRPC_HTTP2_ENHANCE_YOUR_CALM;
+    case GRPC_STATUS_PERMISSION_DENIED:
+      return GRPC_HTTP2_INADEQUATE_SECURITY;
+    case GRPC_STATUS_UNAVAILABLE:
+      return GRPC_HTTP2_REFUSED_STREAM;
+    default:
+      return GRPC_HTTP2_INTERNAL_ERROR;
+  }
+}
+
+grpc_status_code grpc_http2_error_to_grpc_status(grpc_http2_error_code error,
+                                                 grpc_millis deadline) {
+  switch (error) {
+    case GRPC_HTTP2_NO_ERROR:
+      /* should never be received */
+      return GRPC_STATUS_INTERNAL;
+    case GRPC_HTTP2_CANCEL:
+      /* http2 cancel translates to STATUS_CANCELLED iff deadline hasn't been
+       * exceeded */
+      return grpc_core::ExecCtx::Get()->Now() > deadline
+                 ? GRPC_STATUS_DEADLINE_EXCEEDED
+                 : GRPC_STATUS_CANCELLED;
+    case GRPC_HTTP2_ENHANCE_YOUR_CALM:
+      return GRPC_STATUS_RESOURCE_EXHAUSTED;
+    case GRPC_HTTP2_INADEQUATE_SECURITY:
+      return GRPC_STATUS_PERMISSION_DENIED;
+    case GRPC_HTTP2_REFUSED_STREAM:
+      return GRPC_STATUS_UNAVAILABLE;
+    default:
+      return GRPC_STATUS_INTERNAL;
+  }
+}
+
+grpc_status_code grpc_http2_status_to_grpc_status(int status) {
+  switch (status) {
+    /* these HTTP2 status codes are called out explicitly in status.proto */
+    case 200:
+      return GRPC_STATUS_OK;
+    case 400:
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    case 401:
+      return GRPC_STATUS_UNAUTHENTICATED;
+    case 403:
+      return GRPC_STATUS_PERMISSION_DENIED;
+    case 404:
+      return GRPC_STATUS_NOT_FOUND;
+    case 409:
+      return GRPC_STATUS_ABORTED;
+    case 412:
+      return GRPC_STATUS_FAILED_PRECONDITION;
+    case 429:
+      return GRPC_STATUS_RESOURCE_EXHAUSTED;
+    case 499:
+      return GRPC_STATUS_CANCELLED;
+    case 500:
+      return GRPC_STATUS_UNKNOWN;
+    case 501:
+      return GRPC_STATUS_UNIMPLEMENTED;
+    case 503:
+      return GRPC_STATUS_UNAVAILABLE;
+    case 504:
+      return GRPC_STATUS_DEADLINE_EXCEEDED;
+    /* everything else is unknown */
+    default:
+      return GRPC_STATUS_UNKNOWN;
+  }
+}
+
+int grpc_status_to_http2_status(grpc_status_code /*status*/) { return 200; }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.h
new file mode 100644
index 0000000..487f00c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_conversion.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H
+#define GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/http2_errors.h"
+
+/* Conversion of grpc status codes to http2 error codes (for RST_STREAM) */
+grpc_http2_error_code grpc_status_to_http2_error(grpc_status_code status);
+grpc_status_code grpc_http2_error_to_grpc_status(grpc_http2_error_code error,
+                                                 grpc_millis deadline);
+
+/* Conversion of HTTP status codes (:status) to grpc status codes */
+grpc_status_code grpc_http2_status_to_grpc_status(int status);
+int grpc_status_to_http2_status(grpc_status_code status);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATUS_CONVERSION_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.cc
new file mode 100644
index 0000000..c83d6b0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.cc	
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/status_metadata.h"
+
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+/* we offset status by a small amount when storing it into transport metadata
+   as metadata cannot store a 0 value (which is used as OK for grpc_status_codes
+   */
+#define STATUS_OFFSET 1
+
+static void destroy_status(void* /*ignored*/) {}
+
+grpc_status_code grpc_get_status_code_from_metadata(grpc_mdelem md) {
+  if (grpc_mdelem_static_value_eq(md, GRPC_MDELEM_GRPC_STATUS_0)) {
+    return GRPC_STATUS_OK;
+  }
+  if (grpc_mdelem_static_value_eq(md, GRPC_MDELEM_GRPC_STATUS_1)) {
+    return GRPC_STATUS_CANCELLED;
+  }
+  if (grpc_mdelem_static_value_eq(md, GRPC_MDELEM_GRPC_STATUS_2)) {
+    return GRPC_STATUS_UNKNOWN;
+  }
+  void* user_data = grpc_mdelem_get_user_data(md, destroy_status);
+  if (user_data != nullptr) {
+    return static_cast<grpc_status_code>((intptr_t)user_data - STATUS_OFFSET);
+  }
+  uint32_t status;
+  if (!grpc_parse_slice_to_uint32(GRPC_MDVALUE(md), &status)) {
+    status = GRPC_STATUS_UNKNOWN; /* could not parse status code */
+  }
+  grpc_mdelem_set_user_data(
+      md, destroy_status, (void*)static_cast<intptr_t>(status + STATUS_OFFSET));
+  return static_cast<grpc_status_code>(status);
+}
+
+grpc_mdelem grpc_get_reffed_status_elem_slowpath(int status_code) {
+  char tmp[GPR_LTOA_MIN_BUFSIZE];
+  gpr_ltoa(status_code, tmp);
+  return grpc_mdelem_from_slices(GRPC_MDSTR_GRPC_STATUS,
+                                 grpc_core::UnmanagedMemorySlice(tmp));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.h
new file mode 100644
index 0000000..24022c0
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/status_metadata.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/status.h>
+
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
+
+grpc_status_code grpc_get_status_code_from_metadata(grpc_mdelem md);
+
+/** Get a grpc_mdelem of grpc-status: X where X is the numeric value of
+    status_code.
+
+    The returned elem is owned by the caller. */
+grpc_mdelem grpc_get_reffed_status_elem_slowpath(int status_code);
+inline grpc_mdelem grpc_get_reffed_status_elem(int status_code) {
+  switch (status_code) {
+    case 0:
+      return GRPC_MDELEM_GRPC_STATUS_0;
+    case 1:
+      return GRPC_MDELEM_GRPC_STATUS_1;
+    case 2:
+      return GRPC_MDELEM_GRPC_STATUS_2;
+  }
+  return grpc_get_reffed_status_elem_slowpath(status_code);
+}
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATUS_METADATA_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.cc
new file mode 100644
index 0000000..26d4b4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.cc	
@@ -0,0 +1,151 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/timeout_encoding.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/lib/gpr/string.h"
+
+static int64_t round_up(int64_t x, int64_t divisor) {
+  return (x / divisor + (x % divisor != 0)) * divisor;
+}
+
+/* round an integer up to the next value with three significant figures */
+static int64_t round_up_to_three_sig_figs(int64_t x) {
+  if (x < 1000) return x;
+  if (x < 10000) return round_up(x, 10);
+  if (x < 100000) return round_up(x, 100);
+  if (x < 1000000) return round_up(x, 1000);
+  if (x < 10000000) return round_up(x, 10000);
+  if (x < 100000000) return round_up(x, 100000);
+  if (x < 1000000000) return round_up(x, 1000000);
+  return round_up(x, 10000000);
+}
+
+/* encode our minimum viable timeout value */
+static void enc_tiny(char* buffer) { memcpy(buffer, "1n", 3); }
+
+/* encode our maximum timeout value, about 1157 days */
+static void enc_huge(char* buffer) { memcpy(buffer, "99999999S", 10); }
+
+static void enc_ext(char* buffer, int64_t value, char ext) {
+  int n = int64_ttoa(value, buffer);
+  buffer[n] = ext;
+  buffer[n + 1] = 0;
+}
+
+static void enc_seconds(char* buffer, int64_t sec) {
+  sec = round_up_to_three_sig_figs(sec);
+  if (sec % 3600 == 0) {
+    enc_ext(buffer, sec / 3600, 'H');
+  } else if (sec % 60 == 0) {
+    enc_ext(buffer, sec / 60, 'M');
+  } else {
+    enc_ext(buffer, sec, 'S');
+  }
+}
+
+static void enc_millis(char* buffer, int64_t x) {
+  x = round_up_to_three_sig_figs(x);
+  if (x < GPR_MS_PER_SEC) {
+    enc_ext(buffer, x, 'm');
+  } else {
+    if (x % GPR_MS_PER_SEC == 0) {
+      enc_seconds(buffer, x / GPR_MS_PER_SEC);
+    } else {
+      enc_ext(buffer, x, 'm');
+    }
+  }
+}
+
+void grpc_http2_encode_timeout(grpc_millis timeout, char* buffer) {
+  const grpc_millis kMaxTimeout = 99999999000;
+  if (timeout <= 0) {
+    enc_tiny(buffer);
+  } else if (timeout < 1000 * GPR_MS_PER_SEC) {
+    enc_millis(buffer, timeout);
+  } else if (timeout >= kMaxTimeout) {
+    enc_huge(buffer);
+  } else {
+    enc_seconds(buffer,
+                timeout / GPR_MS_PER_SEC + (timeout % GPR_MS_PER_SEC != 0));
+  }
+}
+
+static int is_all_whitespace(const char* p, const char* end) {
+  while (p != end && *p == ' ') p++;
+  return p == end;
+}
+
+int grpc_http2_decode_timeout(const grpc_slice& text, grpc_millis* timeout) {
+  grpc_millis x = 0;
+  const uint8_t* p = GRPC_SLICE_START_PTR(text);
+  const uint8_t* end = GRPC_SLICE_END_PTR(text);
+  int have_digit = 0;
+  /* skip whitespace */
+  for (; p != end && *p == ' '; p++)
+    ;
+  /* decode numeric part */
+  for (; p != end && *p >= '0' && *p <= '9'; p++) {
+    int32_t digit = static_cast<int32_t>(*p - static_cast<uint8_t>('0'));
+    have_digit = 1;
+    /* spec allows max. 8 digits, but we allow values up to 1,000,000,000 */
+    if (x >= (100 * 1000 * 1000)) {
+      if (x != (100 * 1000 * 1000) || digit != 0) {
+        *timeout = GRPC_MILLIS_INF_FUTURE;
+        return 1;
+      }
+    }
+    x = x * 10 + digit;
+  }
+  if (!have_digit) return 0;
+  /* skip whitespace */
+  for (; p != end && *p == ' '; p++)
+    ;
+  if (p == end) return 0;
+  /* decode unit specifier */
+  switch (*p) {
+    case 'n':
+      *timeout = x / GPR_NS_PER_MS + (x % GPR_NS_PER_MS != 0);
+      break;
+    case 'u':
+      *timeout = x / GPR_US_PER_MS + (x % GPR_US_PER_MS != 0);
+      break;
+    case 'm':
+      *timeout = x;
+      break;
+    case 'S':
+      *timeout = x * GPR_MS_PER_SEC;
+      break;
+    case 'M':
+      *timeout = x * 60 * GPR_MS_PER_SEC;
+      break;
+    case 'H':
+      *timeout = x * 60 * 60 * GPR_MS_PER_SEC;
+      break;
+    default:
+      return 0;
+  }
+  p++;
+  return is_all_whitespace(reinterpret_cast<const char*>(p),
+                           reinterpret_cast<const char*>(end));
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.h
new file mode 100644
index 0000000..c87ff39
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/timeout_encoding.h	
@@ -0,0 +1,38 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+#define GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/support/time.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+#define GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE 10
+
+/* Encode/decode timeouts to the GRPC over HTTP/2 format;
+   encoding may round up arbitrarily. If the timeout is larger than about 1157
+   days, it will be capped and "99999999S" will be sent on the wire. */
+void grpc_http2_encode_timeout(grpc_millis timeout, char* buffer);
+int grpc_http2_decode_timeout(const grpc_slice& text, grpc_millis* timeout);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.cc
new file mode 100644
index 0000000..6adcd8d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.cc	
@@ -0,0 +1,260 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/atm.h>
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gpr/alloc.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+grpc_core::DebugOnlyTraceFlag grpc_trace_stream_refcount(false,
+                                                         "stream_refcount");
+
+void grpc_stream_destroy(grpc_stream_refcount* refcount) {
+  if (!grpc_iomgr_is_any_background_poller_thread() &&
+      (grpc_core::ExecCtx::Get()->flags() &
+       GRPC_EXEC_CTX_FLAG_THREAD_RESOURCE_LOOP)) {
+    /* Ick.
+       The thread we're running on MAY be owned (indirectly) by a call-stack.
+       If that's the case, destroying the call-stack MAY try to destroy the
+       thread, which is a tangled mess that we just don't want to ever have to
+       cope with.
+       Throw this over to the executor (on a core-owned thread) and process it
+       there. */
+    grpc_core::Executor::Run(&refcount->destroy, GRPC_ERROR_NONE);
+  } else {
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &refcount->destroy,
+                            GRPC_ERROR_NONE);
+  }
+}
+
+void slice_stream_destroy(void* arg) {
+  grpc_stream_destroy(static_cast<grpc_stream_refcount*>(arg));
+}
+
+#define STREAM_REF_FROM_SLICE_REF(p)       \
+  ((grpc_stream_refcount*)(((uint8_t*)p) - \
+                           offsetof(grpc_stream_refcount, slice_refcount)))
+
+grpc_slice grpc_slice_from_stream_owned_buffer(grpc_stream_refcount* refcount,
+                                               void* buffer, size_t length) {
+#ifndef NDEBUG
+  grpc_stream_ref(STREAM_REF_FROM_SLICE_REF(&refcount->slice_refcount),
+                  "slice");
+#else
+  grpc_stream_ref(STREAM_REF_FROM_SLICE_REF(&refcount->slice_refcount));
+#endif
+  grpc_slice res;
+  res.refcount = &refcount->slice_refcount;
+  res.data.refcounted.bytes = static_cast<uint8_t*>(buffer);
+  res.data.refcounted.length = length;
+  return res;
+}
+
+#ifndef NDEBUG
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int /*initial_refs*/,
+                          grpc_iomgr_cb_func cb, void* cb_arg,
+                          const char* object_type) {
+  refcount->object_type = object_type;
+#else
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int /*initial_refs*/,
+                          grpc_iomgr_cb_func cb, void* cb_arg) {
+#endif
+  GRPC_CLOSURE_INIT(&refcount->destroy, cb, cb_arg, grpc_schedule_on_exec_ctx);
+
+  new (&refcount->refs) grpc_core::RefCount(1, &grpc_trace_stream_refcount);
+  new (&refcount->slice_refcount) grpc_slice_refcount(
+      grpc_slice_refcount::Type::REGULAR, &refcount->refs, slice_stream_destroy,
+      refcount, &refcount->slice_refcount);
+}
+
+static void move64(uint64_t* from, uint64_t* to) {
+  *to += *from;
+  *from = 0;
+}
+
+void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats* from,
+                                       grpc_transport_one_way_stats* to) {
+  move64(&from->framing_bytes, &to->framing_bytes);
+  move64(&from->data_bytes, &to->data_bytes);
+  move64(&from->header_bytes, &to->header_bytes);
+}
+
+void grpc_transport_move_stats(grpc_transport_stream_stats* from,
+                               grpc_transport_stream_stats* to) {
+  grpc_transport_move_one_way_stats(&from->incoming, &to->incoming);
+  grpc_transport_move_one_way_stats(&from->outgoing, &to->outgoing);
+}
+
+size_t grpc_transport_stream_size(grpc_transport* transport) {
+  return GPR_ROUND_UP_TO_ALIGNMENT_SIZE(transport->vtable->sizeof_stream);
+}
+
+void grpc_transport_destroy(grpc_transport* transport) {
+  transport->vtable->destroy(transport);
+}
+
+int grpc_transport_init_stream(grpc_transport* transport, grpc_stream* stream,
+                               grpc_stream_refcount* refcount,
+                               const void* server_data,
+                               grpc_core::Arena* arena) {
+  return transport->vtable->init_stream(transport, stream, refcount,
+                                        server_data, arena);
+}
+
+void grpc_transport_perform_stream_op(grpc_transport* transport,
+                                      grpc_stream* stream,
+                                      grpc_transport_stream_op_batch* op) {
+  transport->vtable->perform_stream_op(transport, stream, op);
+}
+
+void grpc_transport_perform_op(grpc_transport* transport,
+                               grpc_transport_op* op) {
+  transport->vtable->perform_op(transport, op);
+}
+
+void grpc_transport_set_pops(grpc_transport* transport, grpc_stream* stream,
+                             grpc_polling_entity* pollent) {
+  grpc_pollset* pollset;
+  grpc_pollset_set* pollset_set;
+  if ((pollset = grpc_polling_entity_pollset(pollent)) != nullptr) {
+    transport->vtable->set_pollset(transport, stream, pollset);
+  } else if ((pollset_set = grpc_polling_entity_pollset_set(pollent)) !=
+             nullptr) {
+    transport->vtable->set_pollset_set(transport, stream, pollset_set);
+  } else {
+    // No-op for empty pollset. Empty pollset is possible when using
+    // non-fd-based event engines such as CFStream.
+  }
+}
+
+void grpc_transport_destroy_stream(grpc_transport* transport,
+                                   grpc_stream* stream,
+                                   grpc_closure* then_schedule_closure) {
+  transport->vtable->destroy_stream(transport, stream, then_schedule_closure);
+}
+
+grpc_endpoint* grpc_transport_get_endpoint(grpc_transport* transport) {
+  return transport->vtable->get_endpoint(transport);
+}
+
+// This comment should be sung to the tune of
+// "Supercalifragilisticexpialidocious":
+//
+// grpc_transport_stream_op_batch_finish_with_failure
+// is a function that must always unref cancel_error
+// though it lives in lib, it handles transport stream ops sure
+// it's grpc_transport_stream_op_batch_finish_with_failure
+void grpc_transport_stream_op_batch_finish_with_failure(
+    grpc_transport_stream_op_batch* batch, grpc_error* error,
+    grpc_core::CallCombiner* call_combiner) {
+  if (batch->send_message) {
+    batch->payload->send_message.send_message.reset();
+  }
+  if (batch->cancel_stream) {
+    GRPC_ERROR_UNREF(batch->payload->cancel_stream.cancel_error);
+  }
+  // Construct a list of closures to execute.
+  grpc_core::CallCombinerClosureList closures;
+  if (batch->recv_initial_metadata) {
+    closures.Add(
+        batch->payload->recv_initial_metadata.recv_initial_metadata_ready,
+        GRPC_ERROR_REF(error), "failing recv_initial_metadata_ready");
+  }
+  if (batch->recv_message) {
+    closures.Add(batch->payload->recv_message.recv_message_ready,
+                 GRPC_ERROR_REF(error), "failing recv_message_ready");
+  }
+  if (batch->recv_trailing_metadata) {
+    closures.Add(
+        batch->payload->recv_trailing_metadata.recv_trailing_metadata_ready,
+        GRPC_ERROR_REF(error), "failing recv_trailing_metadata_ready");
+  }
+  if (batch->on_complete != nullptr) {
+    closures.Add(batch->on_complete, GRPC_ERROR_REF(error),
+                 "failing on_complete");
+  }
+  // Execute closures.
+  closures.RunClosures(call_combiner);
+  GRPC_ERROR_UNREF(error);
+}
+
+struct made_transport_op {
+  grpc_closure outer_on_complete;
+  grpc_closure* inner_on_complete = nullptr;
+  grpc_transport_op op;
+  made_transport_op() {
+    memset(&outer_on_complete, 0, sizeof(outer_on_complete));
+  }
+};
+
+static void destroy_made_transport_op(void* arg, grpc_error* error) {
+  made_transport_op* op = static_cast<made_transport_op*>(arg);
+  grpc_core::ExecCtx::Run(DEBUG_LOCATION, op->inner_on_complete,
+                          GRPC_ERROR_REF(error));
+  delete op;
+}
+
+grpc_transport_op* grpc_make_transport_op(grpc_closure* on_complete) {
+  made_transport_op* op = new made_transport_op();
+  GRPC_CLOSURE_INIT(&op->outer_on_complete, destroy_made_transport_op, op,
+                    grpc_schedule_on_exec_ctx);
+  op->inner_on_complete = on_complete;
+  op->op.on_consumed = &op->outer_on_complete;
+  return &op->op;
+}
+
+typedef struct {
+  grpc_closure outer_on_complete;
+  grpc_closure* inner_on_complete;
+  grpc_transport_stream_op_batch op;
+  grpc_transport_stream_op_batch_payload payload;
+} made_transport_stream_op;
+
+static void destroy_made_transport_stream_op(void* arg, grpc_error* error) {
+  made_transport_stream_op* op = static_cast<made_transport_stream_op*>(arg);
+  grpc_closure* c = op->inner_on_complete;
+  gpr_free(op);
+  grpc_core::Closure::Run(DEBUG_LOCATION, c, GRPC_ERROR_REF(error));
+}
+
+grpc_transport_stream_op_batch* grpc_make_transport_stream_op(
+    grpc_closure* on_complete) {
+  made_transport_stream_op* op =
+      static_cast<made_transport_stream_op*>(gpr_zalloc(sizeof(*op)));
+  op->op.payload = &op->payload;
+  GRPC_CLOSURE_INIT(&op->outer_on_complete, destroy_made_transport_stream_op,
+                    op, grpc_schedule_on_exec_ctx);
+  op->inner_on_complete = on_complete;
+  op->op.on_complete = &op->outer_on_complete;
+  return &op->op;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.h
new file mode 100644
index 0000000..1837451
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport.h	
@@ -0,0 +1,455 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/gprpp/arena.h"
+#include "src/core/lib/gprpp/orphanable.h"
+#include "src/core/lib/iomgr/call_combiner.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/metadata_batch.h"
+
+/* Minimum and maximum protocol accepted versions. */
+#define GRPC_PROTOCOL_VERSION_MAX_MAJOR 2
+#define GRPC_PROTOCOL_VERSION_MAX_MINOR 1
+#define GRPC_PROTOCOL_VERSION_MIN_MAJOR 2
+#define GRPC_PROTOCOL_VERSION_MIN_MINOR 1
+
+/* forward declarations */
+
+typedef struct grpc_transport grpc_transport;
+
+/* grpc_stream doesn't actually exist. It's used as a typesafe
+   opaque pointer for whatever data the transport wants to track
+   for a stream. */
+typedef struct grpc_stream grpc_stream;
+
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_stream_refcount;
+
+typedef struct grpc_stream_refcount {
+  grpc_core::RefCount refs;
+  grpc_closure destroy;
+#ifndef NDEBUG
+  const char* object_type;
+#endif
+  grpc_slice_refcount slice_refcount;
+} grpc_stream_refcount;
+
+#ifndef NDEBUG
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int initial_refs,
+                          grpc_iomgr_cb_func cb, void* cb_arg,
+                          const char* object_type);
+#define GRPC_STREAM_REF_INIT(rc, ir, cb, cb_arg, objtype) \
+  grpc_stream_ref_init(rc, ir, cb, cb_arg, objtype)
+#else
+void grpc_stream_ref_init(grpc_stream_refcount* refcount, int initial_refs,
+                          grpc_iomgr_cb_func cb, void* cb_arg);
+#define GRPC_STREAM_REF_INIT(rc, ir, cb, cb_arg, objtype) \
+  do {                                                    \
+    grpc_stream_ref_init(rc, ir, cb, cb_arg);             \
+    (void)(objtype);                                      \
+  } while (0)
+#endif
+
+#ifndef NDEBUG
+inline void grpc_stream_ref(grpc_stream_refcount* refcount,
+                            const char* reason) {
+  if (grpc_trace_stream_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%s %p:%p REF %s", refcount->object_type, refcount,
+            refcount->destroy.cb_arg, reason);
+  }
+  refcount->refs.RefNonZero(DEBUG_LOCATION, reason);
+}
+#else
+inline void grpc_stream_ref(grpc_stream_refcount* refcount) {
+  refcount->refs.RefNonZero();
+}
+#endif
+
+void grpc_stream_destroy(grpc_stream_refcount* refcount);
+
+#ifndef NDEBUG
+inline void grpc_stream_unref(grpc_stream_refcount* refcount,
+                              const char* reason) {
+  if (grpc_trace_stream_refcount.enabled()) {
+    gpr_log(GPR_DEBUG, "%s %p:%p UNREF %s", refcount->object_type, refcount,
+            refcount->destroy.cb_arg, reason);
+  }
+  if (GPR_UNLIKELY(refcount->refs.Unref(DEBUG_LOCATION, reason))) {
+    grpc_stream_destroy(refcount);
+  }
+}
+#else
+inline void grpc_stream_unref(grpc_stream_refcount* refcount) {
+  if (GPR_UNLIKELY(refcount->refs.Unref())) {
+    grpc_stream_destroy(refcount);
+  }
+}
+#endif
+
+/* Wrap a buffer that is owned by some stream object into a slice that shares
+   the same refcount */
+grpc_slice grpc_slice_from_stream_owned_buffer(grpc_stream_refcount* refcount,
+                                               void* buffer, size_t length);
+
+struct grpc_transport_one_way_stats {
+  uint64_t framing_bytes = 0;
+  uint64_t data_bytes = 0;
+  uint64_t header_bytes = 0;
+};
+
+struct grpc_transport_stream_stats {
+  grpc_transport_one_way_stats incoming;
+  grpc_transport_one_way_stats outgoing;
+};
+
+void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats* from,
+                                       grpc_transport_one_way_stats* to);
+
+void grpc_transport_move_stats(grpc_transport_stream_stats* from,
+                               grpc_transport_stream_stats* to);
+
+// This struct (which is present in both grpc_transport_stream_op_batch
+// and grpc_transport_op_batch) is a convenience to allow filters or
+// transports to schedule a closure related to a particular batch without
+// having to allocate memory.  The general pattern is to initialize the
+// closure with the callback arg set to the batch and extra_arg set to
+// whatever state is associated with the handler (e.g., the call element
+// or the transport stream object).
+//
+// Note that this can only be used by the current handler of a given
+// batch on the way down the stack (i.e., whichever filter or transport is
+// currently handling the batch).  Once a filter or transport passes control
+// of the batch to the next handler, it cannot depend on the contents of
+// this struct anymore, because the next handler may reuse it.
+struct grpc_handler_private_op_data {
+  void* extra_arg = nullptr;
+  grpc_closure closure;
+  grpc_handler_private_op_data() { memset(&closure, 0, sizeof(closure)); }
+};
+
+typedef struct grpc_transport_stream_op_batch_payload
+    grpc_transport_stream_op_batch_payload;
+
+/* Transport stream op: a set of operations to perform on a transport
+   against a single stream */
+struct grpc_transport_stream_op_batch {
+  grpc_transport_stream_op_batch()
+      : send_initial_metadata(false),
+        send_trailing_metadata(false),
+        send_message(false),
+        recv_initial_metadata(false),
+        recv_message(false),
+        recv_trailing_metadata(false),
+        cancel_stream(false),
+        is_traced(false) {}
+
+  /** Should be scheduled when all of the non-recv operations in the batch
+      are complete.
+
+      The recv ops (recv_initial_metadata, recv_message, and
+      recv_trailing_metadata) each have their own callbacks.  If a batch
+      contains both recv ops and non-recv ops, on_complete should be
+      scheduled as soon as the non-recv ops are complete, regardless of
+      whether or not the recv ops are complete.  If a batch contains
+      only recv ops, on_complete can be null. */
+  grpc_closure* on_complete = nullptr;
+
+  /** Values for the stream op (fields set are determined by flags above) */
+  grpc_transport_stream_op_batch_payload* payload = nullptr;
+
+  /** Send initial metadata to the peer, from the provided metadata batch. */
+  bool send_initial_metadata : 1;
+
+  /** Send trailing metadata to the peer, from the provided metadata batch. */
+  bool send_trailing_metadata : 1;
+
+  /** Send message data to the peer, from the provided byte stream. */
+  bool send_message : 1;
+
+  /** Receive initial metadata from the stream, into provided metadata batch. */
+  bool recv_initial_metadata : 1;
+
+  /** Receive message data from the stream, into provided byte stream. */
+  bool recv_message : 1;
+
+  /** Receive trailing metadata from the stream, into provided metadata batch.
+   */
+  bool recv_trailing_metadata : 1;
+
+  /** Cancel this stream with the provided error */
+  bool cancel_stream : 1;
+
+  /** Is this stream traced */
+  bool is_traced : 1;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * current handler of the op */
+
+  grpc_handler_private_op_data handler_private;
+};
+
+struct grpc_transport_stream_op_batch_payload {
+  explicit grpc_transport_stream_op_batch_payload(
+      grpc_call_context_element* context)
+      : context(context) {}
+  ~grpc_transport_stream_op_batch_payload() {
+    // We don't really own `send_message`, so release ownership and let the
+    // owner clean the data.
+    send_message.send_message.release();
+  }
+
+  struct {
+    grpc_metadata_batch* send_initial_metadata = nullptr;
+    /** Iff send_initial_metadata != NULL, flags associated with
+        send_initial_metadata: a bitfield of GRPC_INITIAL_METADATA_xxx */
+    uint32_t send_initial_metadata_flags = 0;
+    // If non-NULL, will be set by the transport to the peer string (a char*).
+    // The transport retains ownership of the string.
+    // Note: This pointer may be used by the transport after the
+    // send_initial_metadata op is completed.  It must remain valid
+    // until the call is destroyed.
+    gpr_atm* peer_string = nullptr;
+  } send_initial_metadata;
+
+  struct {
+    grpc_metadata_batch* send_trailing_metadata = nullptr;
+  } send_trailing_metadata;
+
+  struct {
+    // The transport (or a filter that decides to return a failure before
+    // the op gets down to the transport) takes ownership.
+    // The batch's on_complete will not be called until after the byte
+    // stream is orphaned.
+    grpc_core::OrphanablePtr<grpc_core::ByteStream> send_message;
+    // Set by the transport if the stream has been closed for writes. If this
+    // is set and send message op is present, we set the operation to be a
+    // failure without sending a cancel OP down the stack. This is so that the
+    // status of the call does not get overwritten by the Cancel OP, which would
+    // be especially problematic if we had received a valid status from the
+    // server.
+    // For send_initial_metadata, it is fine for the status to be overwritten
+    // because at that point, the client will not have received a status.
+    // For send_trailing_metadata, we might overwrite the status if we have
+    // non-zero metadata to send. This is fine because the API does not allow
+    // the client to send trailing metadata.
+    bool stream_write_closed = false;
+  } send_message;
+
+  struct {
+    grpc_metadata_batch* recv_initial_metadata = nullptr;
+    // Flags are used only on the server side.  If non-null, will be set to
+    // a bitfield of the GRPC_INITIAL_METADATA_xxx macros (e.g., to
+    // indicate if the call is idempotent).
+    uint32_t* recv_flags = nullptr;
+    /** Should be enqueued when initial metadata is ready to be processed. */
+    grpc_closure* recv_initial_metadata_ready = nullptr;
+    // If not NULL, will be set to true if trailing metadata is
+    // immediately available.  This may be a signal that we received a
+    // Trailers-Only response.
+    bool* trailing_metadata_available = nullptr;
+    // If non-NULL, will be set by the transport to the peer string (a char*).
+    // The transport retains ownership of the string.
+    // Note: This pointer may be used by the transport after the
+    // recv_initial_metadata op is completed.  It must remain valid
+    // until the call is destroyed.
+    gpr_atm* peer_string = nullptr;
+  } recv_initial_metadata;
+
+  struct {
+    // Will be set by the transport to point to the byte stream
+    // containing a received message.
+    // Will be NULL if trailing metadata is received instead of a message.
+    grpc_core::OrphanablePtr<grpc_core::ByteStream>* recv_message = nullptr;
+    /** Should be enqueued when one message is ready to be processed. */
+    grpc_closure* recv_message_ready = nullptr;
+  } recv_message;
+
+  struct {
+    grpc_metadata_batch* recv_trailing_metadata = nullptr;
+    grpc_transport_stream_stats* collect_stats = nullptr;
+    /** Should be enqueued when trailing metadata is ready to be processed. */
+    grpc_closure* recv_trailing_metadata_ready = nullptr;
+  } recv_trailing_metadata;
+
+  /** Forcefully close this stream.
+      The HTTP2 semantics should be:
+      - server side: if cancel_error has GRPC_ERROR_INT_GRPC_STATUS, and
+        trailing metadata has not been sent, send trailing metadata with status
+        and message from cancel_error (use grpc_error_get_status) followed by
+        a RST_STREAM with error=GRPC_CHTTP2_NO_ERROR to force a full close
+      - at all other times: use grpc_error_get_status to get a status code, and
+        convert to a HTTP2 error code using
+        grpc_chttp2_grpc_status_to_http2_error. Send a RST_STREAM with this
+        error. */
+  struct {
+    // Error contract: the transport that gets this op must cause cancel_error
+    //                 to be unref'ed after processing it
+    grpc_error* cancel_error = GRPC_ERROR_NONE;
+  } cancel_stream;
+
+  /* Indexes correspond to grpc_context_index enum values */
+  grpc_call_context_element* context;
+};
+
+/** Transport op: a set of operations to perform on a transport as a whole */
+typedef struct grpc_transport_op {
+  /** Called when processing of this op is done. */
+  grpc_closure* on_consumed = nullptr;
+  /** connectivity monitoring - set connectivity_state to NULL to unsubscribe */
+  grpc_core::OrphanablePtr<grpc_core::ConnectivityStateWatcherInterface>
+      start_connectivity_watch;
+  grpc_connectivity_state start_connectivity_watch_state = GRPC_CHANNEL_IDLE;
+  grpc_core::ConnectivityStateWatcherInterface* stop_connectivity_watch =
+      nullptr;
+  /** should the transport be disconnected
+   * Error contract: the transport that gets this op must cause
+   *                 disconnect_with_error to be unref'ed after processing it */
+  grpc_error* disconnect_with_error = nullptr;
+  /** what should the goaway contain?
+   * Error contract: the transport that gets this op must cause
+   *                 goaway_error to be unref'ed after processing it */
+  grpc_error* goaway_error = nullptr;
+  /** set the callback for accepting new streams;
+      this is a permanent callback, unlike the other one-shot closures.
+      If true, the callback is set to set_accept_stream_fn, with its
+      user_data argument set to set_accept_stream_user_data */
+  bool set_accept_stream = false;
+  void (*set_accept_stream_fn)(void* user_data, grpc_transport* transport,
+                               const void* server_data) = nullptr;
+  void* set_accept_stream_user_data = nullptr;
+  /** add this transport to a pollset */
+  grpc_pollset* bind_pollset = nullptr;
+  /** add this transport to a pollset_set */
+  grpc_pollset_set* bind_pollset_set = nullptr;
+  /** send a ping, if either on_initiate or on_ack is not NULL */
+  struct {
+    /** Ping may be delayed by the transport, on_initiate callback will be
+        called when the ping is actually being sent. */
+    grpc_closure* on_initiate = nullptr;
+    /** Called when the ping ack is received */
+    grpc_closure* on_ack = nullptr;
+  } send_ping;
+  // If true, will reset the channel's connection backoff.
+  bool reset_connect_backoff = false;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * transport implementation */
+
+  grpc_handler_private_op_data handler_private;
+} grpc_transport_op;
+
+/* Returns the amount of memory required to store a grpc_stream for this
+   transport */
+size_t grpc_transport_stream_size(grpc_transport* transport);
+
+/* Initialize transport data for a stream.
+
+   Returns 0 on success, any other (transport-defined) value for failure.
+   May assume that stream contains all-zeros.
+
+   Arguments:
+     transport   - the transport on which to create this stream
+     stream      - a pointer to uninitialized memory to initialize
+     server_data - either NULL for a client initiated stream, or a pointer
+                   supplied from the accept_stream callback function */
+int grpc_transport_init_stream(grpc_transport* transport, grpc_stream* stream,
+                               grpc_stream_refcount* refcount,
+                               const void* server_data,
+                               grpc_core::Arena* arena);
+
+void grpc_transport_set_pops(grpc_transport* transport, grpc_stream* stream,
+                             grpc_polling_entity* pollent);
+
+/* Destroy transport data for a stream.
+
+   Requires: a recv_batch with final_state == GRPC_STREAM_CLOSED has been
+   received by the up-layer. Must not be called in the same call stack as
+   recv_frame.
+
+   Arguments:
+     transport - the transport on which to create this stream
+     stream    - the grpc_stream to destroy (memory is still owned by the
+                 caller, but any child memory must be cleaned up) */
+void grpc_transport_destroy_stream(grpc_transport* transport,
+                                   grpc_stream* stream,
+                                   grpc_closure* then_schedule_closure);
+
+void grpc_transport_stream_op_batch_finish_with_failure(
+    grpc_transport_stream_op_batch* op, grpc_error* error,
+    grpc_core::CallCombiner* call_combiner);
+
+char* grpc_transport_stream_op_batch_string(grpc_transport_stream_op_batch* op);
+char* grpc_transport_op_string(grpc_transport_op* op);
+
+/* Send a batch of operations on a transport
+
+   Takes ownership of any objects contained in ops.
+
+   Arguments:
+     transport - the transport on which to initiate the stream
+     stream    - the stream on which to send the operations. This must be
+                 non-NULL and previously initialized by the same transport.
+     op        - a grpc_transport_stream_op_batch specifying the op to perform
+   */
+void grpc_transport_perform_stream_op(grpc_transport* transport,
+                                      grpc_stream* stream,
+                                      grpc_transport_stream_op_batch* op);
+
+void grpc_transport_perform_op(grpc_transport* transport,
+                               grpc_transport_op* op);
+
+/* Send a ping on a transport
+
+   Calls cb with user data when a response is received. */
+void grpc_transport_ping(grpc_transport* transport, grpc_closure* cb);
+
+/* Advise peer of pending connection termination. */
+void grpc_transport_goaway(grpc_transport* transport, grpc_status_code status,
+                           grpc_slice debug_data);
+
+/* Destroy the transport */
+void grpc_transport_destroy(grpc_transport* transport);
+
+/* Get the endpoint used by \a transport */
+grpc_endpoint* grpc_transport_get_endpoint(grpc_transport* transport);
+
+/* Allocate a grpc_transport_op, and preconfigure the on_consumed closure to
+   \a on_consumed and then delete the returned transport op */
+grpc_transport_op* grpc_make_transport_op(grpc_closure* on_consumed);
+/* Allocate a grpc_transport_stream_op_batch, and preconfigure the on_consumed
+   closure
+   to \a on_consumed and then delete the returned transport op */
+grpc_transport_stream_op_batch* grpc_make_transport_stream_op(
+    grpc_closure* on_consumed);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_impl.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_impl.h
new file mode 100644
index 0000000..526cc1b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_impl.h	
@@ -0,0 +1,71 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/transport/transport.h"
+
+typedef struct grpc_transport_vtable {
+  /* Memory required for a single stream element - this is allocated by upper
+     layers and initialized by the transport */
+  size_t sizeof_stream; /* = sizeof(transport stream) */
+
+  /* name of this transport implementation */
+  const char* name;
+
+  /* implementation of grpc_transport_init_stream */
+  int (*init_stream)(grpc_transport* self, grpc_stream* stream,
+                     grpc_stream_refcount* refcount, const void* server_data,
+                     grpc_core::Arena* arena);
+
+  /* implementation of grpc_transport_set_pollset */
+  void (*set_pollset)(grpc_transport* self, grpc_stream* stream,
+                      grpc_pollset* pollset);
+
+  /* implementation of grpc_transport_set_pollset */
+  void (*set_pollset_set)(grpc_transport* self, grpc_stream* stream,
+                          grpc_pollset_set* pollset_set);
+
+  /* implementation of grpc_transport_perform_stream_op */
+  void (*perform_stream_op)(grpc_transport* self, grpc_stream* stream,
+                            grpc_transport_stream_op_batch* op);
+
+  /* implementation of grpc_transport_perform_op */
+  void (*perform_op)(grpc_transport* self, grpc_transport_op* op);
+
+  /* implementation of grpc_transport_destroy_stream */
+  void (*destroy_stream)(grpc_transport* self, grpc_stream* stream,
+                         grpc_closure* then_schedule_closure);
+
+  /* implementation of grpc_transport_destroy */
+  void (*destroy)(grpc_transport* self);
+
+  /* implementation of grpc_transport_get_endpoint */
+  grpc_endpoint* (*get_endpoint)(grpc_transport* self);
+} grpc_transport_vtable;
+
+/* an instance of a grpc transport */
+struct grpc_transport {
+  /* pointer to a vtable defining operations on this transport */
+  const grpc_transport_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_op_string.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_op_string.cc
new file mode 100644
index 0000000..34b36c3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/transport/transport_op_string.cc	
@@ -0,0 +1,210 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+/* These routines are here to facilitate debugging - they produce string
+   representations of various transport data structures */
+
+static void put_metadata(gpr_strvec* b, grpc_mdelem md) {
+  gpr_strvec_add(b, gpr_strdup("key="));
+  gpr_strvec_add(
+      b, grpc_dump_slice(GRPC_MDKEY(md), GPR_DUMP_HEX | GPR_DUMP_ASCII));
+
+  gpr_strvec_add(b, gpr_strdup(" value="));
+  gpr_strvec_add(
+      b, grpc_dump_slice(GRPC_MDVALUE(md), GPR_DUMP_HEX | GPR_DUMP_ASCII));
+}
+
+static void put_metadata_list(gpr_strvec* b, grpc_metadata_batch md) {
+  grpc_linked_mdelem* m;
+  for (m = md.list.head; m != nullptr; m = m->next) {
+    if (m != md.list.head) gpr_strvec_add(b, gpr_strdup(", "));
+    put_metadata(b, m->md);
+  }
+  if (md.deadline != GRPC_MILLIS_INF_FUTURE) {
+    char* tmp;
+    gpr_asprintf(&tmp, " deadline=%" PRId64, md.deadline);
+    gpr_strvec_add(b, tmp);
+  }
+}
+
+char* grpc_transport_stream_op_batch_string(
+    grpc_transport_stream_op_batch* op) {
+  char* tmp;
+  char* out;
+
+  gpr_strvec b;
+  gpr_strvec_init(&b);
+
+  if (op->send_initial_metadata) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_strvec_add(&b, gpr_strdup("SEND_INITIAL_METADATA{"));
+    put_metadata_list(
+        &b, *op->payload->send_initial_metadata.send_initial_metadata);
+    gpr_strvec_add(&b, gpr_strdup("}"));
+  }
+
+  if (op->send_message) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    if (op->payload->send_message.send_message != nullptr) {
+      gpr_asprintf(&tmp, "SEND_MESSAGE:flags=0x%08x:len=%d",
+                   op->payload->send_message.send_message->flags(),
+                   op->payload->send_message.send_message->length());
+    } else {
+      // This can happen when we check a batch after the transport has
+      // processed and cleared the send_message op.
+      tmp =
+          gpr_strdup("SEND_MESSAGE(flag and length unknown, already orphaned)");
+    }
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->send_trailing_metadata) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_strvec_add(&b, gpr_strdup("SEND_TRAILING_METADATA{"));
+    put_metadata_list(
+        &b, *op->payload->send_trailing_metadata.send_trailing_metadata);
+    gpr_strvec_add(&b, gpr_strdup("}"));
+  }
+
+  if (op->recv_initial_metadata) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_strvec_add(&b, gpr_strdup("RECV_INITIAL_METADATA"));
+  }
+
+  if (op->recv_message) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_strvec_add(&b, gpr_strdup("RECV_MESSAGE"));
+  }
+
+  if (op->recv_trailing_metadata) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_strvec_add(&b, gpr_strdup("RECV_TRAILING_METADATA"));
+  }
+
+  if (op->cancel_stream) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    const char* msg =
+        grpc_error_string(op->payload->cancel_stream.cancel_error);
+    gpr_asprintf(&tmp, "CANCEL:%s", msg);
+
+    gpr_strvec_add(&b, tmp);
+  }
+
+  out = gpr_strvec_flatten(&b, nullptr);
+  gpr_strvec_destroy(&b);
+
+  return out;
+}
+
+char* grpc_transport_op_string(grpc_transport_op* op) {
+  char* tmp;
+  char* out;
+  bool first = true;
+
+  gpr_strvec b;
+  gpr_strvec_init(&b);
+
+  if (op->start_connectivity_watch != nullptr) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    gpr_asprintf(
+        &tmp, "START_CONNECTIVITY_WATCH:watcher=%p:from=%s",
+        op->start_connectivity_watch.get(),
+        grpc_core::ConnectivityStateName(op->start_connectivity_watch_state));
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->stop_connectivity_watch != nullptr) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    gpr_asprintf(&tmp, "STOP_CONNECTIVITY_WATCH:watcher=%p",
+                 op->stop_connectivity_watch);
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    const char* err = grpc_error_string(op->disconnect_with_error);
+    gpr_asprintf(&tmp, "DISCONNECT:%s", err);
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->goaway_error) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    const char* msg = grpc_error_string(op->goaway_error);
+    gpr_asprintf(&tmp, "SEND_GOAWAY:%s", msg);
+
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->set_accept_stream) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    gpr_asprintf(&tmp, "SET_ACCEPT_STREAM:%p(%p,...)", op->set_accept_stream_fn,
+                 op->set_accept_stream_user_data);
+    gpr_strvec_add(&b, tmp);
+  }
+
+  if (op->bind_pollset != nullptr) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET"));
+  }
+
+  if (op->bind_pollset_set != nullptr) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    first = false;
+    gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET_SET"));
+  }
+
+  if (op->send_ping.on_initiate != nullptr || op->send_ping.on_ack != nullptr) {
+    if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+    // first = false;
+    gpr_strvec_add(&b, gpr_strdup("SEND_PING"));
+  }
+
+  out = gpr_strvec_flatten(&b, nullptr);
+  gpr_strvec_destroy(&b);
+
+  return out;
+}
+
+void grpc_call_log_op(const char* file, int line, gpr_log_severity severity,
+                      grpc_call_element* elem,
+                      grpc_transport_stream_op_batch* op) {
+  char* str = grpc_transport_stream_op_batch_string(op);
+  gpr_log(file, line, severity, "OP[%s:%p]: %s", elem->filter->name, elem, str);
+  gpr_free(str);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.cc
new file mode 100644
index 0000000..f212c7d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.cc	
@@ -0,0 +1,314 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/uri/uri_parser.h"
+
+#include <string.h>
+
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/percent_encoding.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+/** a size_t default value... maps to all 1's */
+#define NOT_SET (~(size_t)0)
+
+static grpc_uri* bad_uri(const char* uri_text, size_t pos, const char* section,
+                         bool suppress_errors) {
+  char* line_prefix;
+  size_t pfx_len;
+
+  if (!suppress_errors) {
+    gpr_asprintf(&line_prefix, "bad uri.%s: '", section);
+    pfx_len = strlen(line_prefix) + pos;
+    gpr_log(GPR_ERROR, "%s%s'", line_prefix, uri_text);
+    gpr_free(line_prefix);
+
+    line_prefix = static_cast<char*>(gpr_malloc(pfx_len + 1));
+    memset(line_prefix, ' ', pfx_len);
+    line_prefix[pfx_len] = 0;
+    gpr_log(GPR_ERROR, "%s^ here", line_prefix);
+    gpr_free(line_prefix);
+  }
+
+  return nullptr;
+}
+
+/** Returns a copy of percent decoded \a src[begin, end) */
+static char* decode_and_copy_component(const char* src, size_t begin,
+                                       size_t end) {
+  grpc_slice component =
+      (begin == NOT_SET || end == NOT_SET)
+          ? grpc_empty_slice()
+          : grpc_slice_from_copied_buffer(src + begin, end - begin);
+  grpc_slice decoded_component =
+      grpc_permissive_percent_decode_slice(component);
+  char* out = grpc_dump_slice(decoded_component, GPR_DUMP_ASCII);
+  grpc_slice_unref_internal(component);
+  grpc_slice_unref_internal(decoded_component);
+  return out;
+}
+
+static bool valid_hex(char c) {
+  return ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F')) ||
+         ((c >= '0') && (c <= '9'));
+}
+
+/** Returns how many chars to advance if \a uri_text[i] begins a valid \a pchar
+ * production. If \a uri_text[i] introduces an invalid \a pchar (such as percent
+ * sign not followed by two hex digits), NOT_SET is returned. */
+static size_t parse_pchar(const char* uri_text, size_t i) {
+  /* pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
+   * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
+   * pct-encoded = "%" HEXDIG HEXDIG
+   * sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
+   / "*" / "+" / "," / ";" / "=" */
+  char c = uri_text[i];
+  switch (c) {
+    default:
+      if (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')) ||
+          ((c >= '0') && (c <= '9'))) {
+        return 1;
+      }
+      break;
+    case ':':
+    case '@':
+    case '-':
+    case '.':
+    case '_':
+    case '~':
+    case '!':
+    case '$':
+    case '&':
+    case '\'':
+    case '(':
+    case ')':
+    case '*':
+    case '+':
+    case ',':
+    case ';':
+    case '=':
+      return 1;
+    case '%': /* pct-encoded */
+      if (valid_hex(uri_text[i + 1]) && valid_hex(uri_text[i + 2])) {
+        return 2;
+      }
+      return NOT_SET;
+  }
+  return 0;
+}
+
+/* *( pchar / "?" / "/" ) */
+static int parse_fragment_or_query(const char* uri_text, size_t* i) {
+  char c;
+  while ((c = uri_text[*i]) != 0) {
+    const size_t advance = parse_pchar(uri_text, *i); /* pchar */
+    switch (advance) {
+      case 0: /* uri_text[i] isn't in pchar */
+        /* maybe it's ? or / */
+        if (uri_text[*i] == '?' || uri_text[*i] == '/') {
+          (*i)++;
+          break;
+        } else {
+          return 1;
+        }
+        GPR_UNREACHABLE_CODE(return 0);
+      default:
+        (*i) += advance;
+        break;
+      case NOT_SET: /* uri_text[i] introduces an invalid URI */
+        return 0;
+    }
+  }
+  /* *i is the first uri_text position past the \a query production, maybe \0 */
+  return 1;
+}
+
+static void parse_query_parts(grpc_uri* uri) {
+  static const char* QUERY_PARTS_SEPARATOR = "&";
+  static const char* QUERY_PARTS_VALUE_SEPARATOR = "=";
+  GPR_ASSERT(uri->query != nullptr);
+  if (uri->query[0] == '\0') {
+    uri->query_parts = nullptr;
+    uri->query_parts_values = nullptr;
+    uri->num_query_parts = 0;
+    return;
+  }
+
+  gpr_string_split(uri->query, QUERY_PARTS_SEPARATOR, &uri->query_parts,
+                   &uri->num_query_parts);
+  uri->query_parts_values =
+      static_cast<char**>(gpr_malloc(uri->num_query_parts * sizeof(char**)));
+  for (size_t i = 0; i < uri->num_query_parts; i++) {
+    char** query_param_parts;
+    size_t num_query_param_parts;
+    char* full = uri->query_parts[i];
+    gpr_string_split(full, QUERY_PARTS_VALUE_SEPARATOR, &query_param_parts,
+                     &num_query_param_parts);
+    GPR_ASSERT(num_query_param_parts > 0);
+    uri->query_parts[i] = query_param_parts[0];
+    if (num_query_param_parts > 1) {
+      /* TODO(dgq): only the first value after the separator is considered.
+       * Perhaps all chars after the first separator for the query part should
+       * be included, even if they include the separator. */
+      uri->query_parts_values[i] = query_param_parts[1];
+    } else {
+      uri->query_parts_values[i] = nullptr;
+    }
+    for (size_t j = 2; j < num_query_param_parts; j++) {
+      gpr_free(query_param_parts[j]);
+    }
+    gpr_free(query_param_parts);
+    gpr_free(full);
+  }
+}
+
+grpc_uri* grpc_uri_parse(const char* uri_text, bool suppress_errors) {
+  grpc_uri* uri;
+  size_t scheme_begin = 0;
+  size_t scheme_end = NOT_SET;
+  size_t authority_begin = NOT_SET;
+  size_t authority_end = NOT_SET;
+  size_t path_begin = NOT_SET;
+  size_t path_end = NOT_SET;
+  size_t query_begin = NOT_SET;
+  size_t query_end = NOT_SET;
+  size_t fragment_begin = NOT_SET;
+  size_t fragment_end = NOT_SET;
+  size_t i;
+
+  for (i = scheme_begin; uri_text[i] != 0; i++) {
+    if (uri_text[i] == ':') {
+      scheme_end = i;
+      break;
+    }
+    if (uri_text[i] >= 'a' && uri_text[i] <= 'z') continue;
+    if (uri_text[i] >= 'A' && uri_text[i] <= 'Z') continue;
+    if (i != scheme_begin) {
+      if (uri_text[i] >= '0' && uri_text[i] <= '9') continue;
+      if (uri_text[i] == '+') continue;
+      if (uri_text[i] == '-') continue;
+      if (uri_text[i] == '.') continue;
+    }
+    break;
+  }
+  if (scheme_end == NOT_SET) {
+    return bad_uri(uri_text, i, "scheme", suppress_errors);
+  }
+
+  if (uri_text[scheme_end + 1] == '/' && uri_text[scheme_end + 2] == '/') {
+    authority_begin = scheme_end + 3;
+    for (i = authority_begin; uri_text[i] != 0 && authority_end == NOT_SET;
+         i++) {
+      if (uri_text[i] == '/' || uri_text[i] == '?' || uri_text[i] == '#') {
+        authority_end = i;
+      }
+    }
+    if (authority_end == NOT_SET && uri_text[i] == 0) {
+      authority_end = i;
+    }
+    if (authority_end == NOT_SET) {
+      return bad_uri(uri_text, i, "authority", suppress_errors);
+    }
+    /* TODO(ctiller): parse the authority correctly */
+    path_begin = authority_end;
+  } else {
+    path_begin = scheme_end + 1;
+  }
+
+  for (i = path_begin; uri_text[i] != 0; i++) {
+    if (uri_text[i] == '?' || uri_text[i] == '#') {
+      path_end = i;
+      break;
+    }
+  }
+  if (path_end == NOT_SET && uri_text[i] == 0) {
+    path_end = i;
+  }
+  if (path_end == NOT_SET) {
+    return bad_uri(uri_text, i, "path", suppress_errors);
+  }
+
+  if (uri_text[i] == '?') {
+    query_begin = ++i;
+    if (!parse_fragment_or_query(uri_text, &i)) {
+      return bad_uri(uri_text, i, "query", suppress_errors);
+    } else if (uri_text[i] != 0 && uri_text[i] != '#') {
+      /* We must be at the end or at the beginning of a fragment */
+      return bad_uri(uri_text, i, "query", suppress_errors);
+    }
+    query_end = i;
+  }
+  if (uri_text[i] == '#') {
+    fragment_begin = ++i;
+    if (!parse_fragment_or_query(uri_text, &i)) {
+      return bad_uri(uri_text, i - fragment_end, "fragment", suppress_errors);
+    } else if (uri_text[i] != 0) {
+      /* We must be at the end */
+      return bad_uri(uri_text, i, "fragment", suppress_errors);
+    }
+    fragment_end = i;
+  }
+
+  uri = static_cast<grpc_uri*>(gpr_zalloc(sizeof(*uri)));
+  uri->scheme = decode_and_copy_component(uri_text, scheme_begin, scheme_end);
+  uri->authority =
+      decode_and_copy_component(uri_text, authority_begin, authority_end);
+  uri->path = decode_and_copy_component(uri_text, path_begin, path_end);
+  uri->query = decode_and_copy_component(uri_text, query_begin, query_end);
+  uri->fragment =
+      decode_and_copy_component(uri_text, fragment_begin, fragment_end);
+  parse_query_parts(uri);
+
+  return uri;
+}
+
+const char* grpc_uri_get_query_arg(const grpc_uri* uri, const char* key) {
+  GPR_ASSERT(key != nullptr);
+  if (key[0] == '\0') return nullptr;
+
+  for (size_t i = 0; i < uri->num_query_parts; ++i) {
+    if (0 == strcmp(key, uri->query_parts[i])) {
+      return uri->query_parts_values[i];
+    }
+  }
+  return nullptr;
+}
+
+void grpc_uri_destroy(grpc_uri* uri) {
+  if (!uri) return;
+  gpr_free(uri->scheme);
+  gpr_free(uri->authority);
+  gpr_free(uri->path);
+  gpr_free(uri->query);
+  for (size_t i = 0; i < uri->num_query_parts; ++i) {
+    gpr_free(uri->query_parts[i]);
+    gpr_free(uri->query_parts_values[i]);
+  }
+  gpr_free(uri->query_parts);
+  gpr_free(uri->query_parts_values);
+  gpr_free(uri->fragment);
+  gpr_free(uri);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.h b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.h
new file mode 100644
index 0000000..b6771bb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/lib/uri/uri_parser.h	
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_URI_URI_PARSER_H
+#define GRPC_CORE_LIB_URI_URI_PARSER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+typedef struct {
+  char* scheme;
+  char* authority;
+  char* path;
+  char* query;
+  /** Query substrings separated by '&' */
+  char** query_parts;
+  /** Number of elements in \a query_parts and \a query_parts_values */
+  size_t num_query_parts;
+  /** Split each query part by '='. NULL if not present. */
+  char** query_parts_values;
+  char* fragment;
+} grpc_uri;
+
+/** parse a uri, return NULL on failure */
+grpc_uri* grpc_uri_parse(const char* uri_text, bool suppress_errors);
+
+/** return the part of a query string after the '=' in "?key=xxx&...", or NULL
+ * if key is not present */
+const char* grpc_uri_get_query_arg(const grpc_uri* uri, const char* key);
+
+/** destroy a uri */
+void grpc_uri_destroy(grpc_uri* uri);
+
+#endif /* GRPC_CORE_LIB_URI_URI_PARSER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/plugin_registry/grpc_plugin_registry.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/plugin_registry/grpc_plugin_registry.cc
new file mode 100644
index 0000000..20ad526
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/plugin_registry/grpc_plugin_registry.cc	
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+void grpc_http_filters_init(void);
+void grpc_http_filters_shutdown(void);
+void grpc_chttp2_plugin_init(void);
+void grpc_chttp2_plugin_shutdown(void);
+void grpc_deadline_filter_init(void);
+void grpc_deadline_filter_shutdown(void);
+void grpc_client_channel_init(void);
+void grpc_client_channel_shutdown(void);
+void grpc_inproc_plugin_init(void);
+void grpc_inproc_plugin_shutdown(void);
+void grpc_resolver_fake_init(void);
+void grpc_resolver_fake_shutdown(void);
+void grpc_lb_policy_grpclb_init(void);
+void grpc_lb_policy_grpclb_shutdown(void);
+void grpc_lb_policy_cds_init(void);
+void grpc_lb_policy_cds_shutdown(void);
+void grpc_lb_policy_xds_init(void);
+void grpc_lb_policy_xds_shutdown(void);
+void grpc_lb_policy_pick_first_init(void);
+void grpc_lb_policy_pick_first_shutdown(void);
+void grpc_lb_policy_round_robin_init(void);
+void grpc_lb_policy_round_robin_shutdown(void);
+void grpc_resolver_dns_ares_init(void);
+void grpc_resolver_dns_ares_shutdown(void);
+void grpc_resolver_dns_native_init(void);
+void grpc_resolver_dns_native_shutdown(void);
+void grpc_resolver_sockaddr_init(void);
+void grpc_resolver_sockaddr_shutdown(void);
+void grpc_resolver_xds_init(void);
+void grpc_resolver_xds_shutdown(void);
+void grpc_client_idle_filter_init(void);
+void grpc_client_idle_filter_shutdown(void);
+void grpc_max_age_filter_init(void);
+void grpc_max_age_filter_shutdown(void);
+void grpc_message_size_filter_init(void);
+void grpc_message_size_filter_shutdown(void);
+void grpc_client_authority_filter_init(void);
+void grpc_client_authority_filter_shutdown(void);
+void grpc_workaround_cronet_compression_filter_init(void);
+void grpc_workaround_cronet_compression_filter_shutdown(void);
+
+void grpc_register_built_in_plugins(void) {
+  grpc_register_plugin(grpc_http_filters_init,
+                       grpc_http_filters_shutdown);
+  grpc_register_plugin(grpc_chttp2_plugin_init,
+                       grpc_chttp2_plugin_shutdown);
+  grpc_register_plugin(grpc_deadline_filter_init,
+                       grpc_deadline_filter_shutdown);
+  grpc_register_plugin(grpc_client_channel_init,
+                       grpc_client_channel_shutdown);
+  grpc_register_plugin(grpc_inproc_plugin_init,
+                       grpc_inproc_plugin_shutdown);
+  grpc_register_plugin(grpc_resolver_fake_init,
+                       grpc_resolver_fake_shutdown);
+  grpc_register_plugin(grpc_lb_policy_grpclb_init,
+                       grpc_lb_policy_grpclb_shutdown);
+  grpc_register_plugin(grpc_lb_policy_cds_init,
+                       grpc_lb_policy_cds_shutdown);
+  grpc_register_plugin(grpc_lb_policy_xds_init,
+                       grpc_lb_policy_xds_shutdown);
+  grpc_register_plugin(grpc_lb_policy_pick_first_init,
+                       grpc_lb_policy_pick_first_shutdown);
+  grpc_register_plugin(grpc_lb_policy_round_robin_init,
+                       grpc_lb_policy_round_robin_shutdown);
+  grpc_register_plugin(grpc_resolver_dns_ares_init,
+                       grpc_resolver_dns_ares_shutdown);
+  grpc_register_plugin(grpc_resolver_dns_native_init,
+                       grpc_resolver_dns_native_shutdown);
+  grpc_register_plugin(grpc_resolver_sockaddr_init,
+                       grpc_resolver_sockaddr_shutdown);
+  grpc_register_plugin(grpc_resolver_xds_init,
+                       grpc_resolver_xds_shutdown);
+  grpc_register_plugin(grpc_client_idle_filter_init,
+                       grpc_client_idle_filter_shutdown);
+  grpc_register_plugin(grpc_max_age_filter_init,
+                       grpc_max_age_filter_shutdown);
+  grpc_register_plugin(grpc_message_size_filter_init,
+                       grpc_message_size_filter_shutdown);
+  grpc_register_plugin(grpc_client_authority_filter_init,
+                       grpc_client_authority_filter_shutdown);
+  grpc_register_plugin(grpc_workaround_cronet_compression_filter_init,
+                       grpc_workaround_cronet_compression_filter_shutdown);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/aes_gcm.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/aes_gcm.cc
new file mode 100644
index 0000000..1a1c089
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/aes_gcm.cc	
@@ -0,0 +1,709 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+#if COCOAPODS==1
+  #include <openssl_grpc/bio.h>
+#else
+  #include <openssl/bio.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/buffer.h>
+#else
+  #include <openssl/buffer.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/err.h>
+#else
+  #include <openssl/err.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/evp.h>
+#else
+  #include <openssl/evp.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/hmac.h>
+#else
+  #include <openssl/hmac.h>
+#endif
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+constexpr size_t kKdfKeyLen = 32;
+constexpr size_t kKdfCounterLen = 6;
+constexpr size_t kKdfCounterOffset = 2;
+constexpr size_t kRekeyAeadKeyLen = kAes128GcmKeyLength;
+
+/* Struct for additional data required if rekeying is enabled. */
+struct gsec_aes_gcm_aead_rekey_data {
+  uint8_t kdf_counter[kKdfCounterLen];
+  uint8_t nonce_mask[kAesGcmNonceLength];
+};
+
+/* Main struct for AES_GCM crypter interface. */
+struct gsec_aes_gcm_aead_crypter {
+  gsec_aead_crypter crypter;
+  size_t key_length;
+  size_t nonce_length;
+  size_t tag_length;
+  uint8_t* key;
+  gsec_aes_gcm_aead_rekey_data* rekey_data;
+  EVP_CIPHER_CTX* ctx;
+};
+
+static char* aes_gcm_get_openssl_errors() {
+  BIO* bio = BIO_new(BIO_s_mem());
+  ERR_print_errors(bio);
+  BUF_MEM* mem = nullptr;
+  char* error_msg = nullptr;
+  BIO_get_mem_ptr(bio, &mem);
+  if (mem != nullptr) {
+    error_msg = static_cast<char*>(gpr_malloc(mem->length + 1));
+    memcpy(error_msg, mem->data, mem->length);
+    error_msg[mem->length] = '\0';
+  }
+  BIO_free_all(bio);
+  return error_msg;
+}
+
+static void aes_gcm_format_errors(const char* error_msg, char** error_details) {
+  if (error_details == nullptr) {
+    return;
+  }
+  unsigned long error = ERR_get_error();
+  if (error == 0 && error_msg != nullptr) {
+    *error_details = static_cast<char*>(gpr_malloc(strlen(error_msg) + 1));
+    memcpy(*error_details, error_msg, strlen(error_msg) + 1);
+    return;
+  }
+  char* openssl_errors = aes_gcm_get_openssl_errors();
+  if (openssl_errors != nullptr && error_msg != nullptr) {
+    size_t len = strlen(error_msg) + strlen(openssl_errors) + 2; /* ", " */
+    *error_details = static_cast<char*>(gpr_malloc(len + 1));
+    snprintf(*error_details, len + 1, "%s, %s", error_msg, openssl_errors);
+    gpr_free(openssl_errors);
+  }
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_max_ciphertext_and_tag_length(
+    const gsec_aead_crypter* crypter, size_t plaintext_length,
+    size_t* max_ciphertext_and_tag_length, char** error_details) {
+  if (max_ciphertext_and_tag_length == nullptr) {
+    aes_gcm_format_errors("max_ciphertext_and_tag_length is nullptr.",
+                          error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  *max_ciphertext_and_tag_length =
+      plaintext_length + aes_gcm_crypter->tag_length;
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_max_plaintext_length(
+    const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+    size_t* max_plaintext_length, char** error_details) {
+  if (max_plaintext_length == nullptr) {
+    aes_gcm_format_errors("max_plaintext_length is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  if (ciphertext_and_tag_length < aes_gcm_crypter->tag_length) {
+    *max_plaintext_length = 0;
+    aes_gcm_format_errors(
+        "ciphertext_and_tag_length is smaller than tag_length.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  *max_plaintext_length =
+      ciphertext_and_tag_length - aes_gcm_crypter->tag_length;
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_nonce_length(
+    const gsec_aead_crypter* crypter, size_t* nonce_length,
+    char** error_details) {
+  if (nonce_length == nullptr) {
+    aes_gcm_format_errors("nonce_length is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  *nonce_length = aes_gcm_crypter->nonce_length;
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_key_length(
+    const gsec_aead_crypter* crypter, size_t* key_length,
+    char** error_details) {
+  if (key_length == nullptr) {
+    aes_gcm_format_errors("key_length is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  *key_length = aes_gcm_crypter->key_length;
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_tag_length(
+    const gsec_aead_crypter* crypter, size_t* tag_length,
+    char** error_details) {
+  if (tag_length == nullptr) {
+    aes_gcm_format_errors("tag_length is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  *tag_length = aes_gcm_crypter->tag_length;
+  return GRPC_STATUS_OK;
+}
+
+static void aes_gcm_mask_nonce(uint8_t* dst, const uint8_t* nonce,
+                               const uint8_t* mask) {
+  uint64_t mask1;
+  uint32_t mask2;
+  memcpy(&mask1, mask, sizeof(mask1));
+  memcpy(&mask2, mask + sizeof(mask1), sizeof(mask2));
+  uint64_t nonce1;
+  uint32_t nonce2;
+  memcpy(&nonce1, nonce, sizeof(nonce1));
+  memcpy(&nonce2, nonce + sizeof(nonce1), sizeof(nonce2));
+  nonce1 ^= mask1;
+  nonce2 ^= mask2;
+  memcpy(dst, &nonce1, sizeof(nonce1));
+  memcpy(dst + sizeof(nonce1), &nonce2, sizeof(nonce2));
+}
+
+static grpc_status_code aes_gcm_derive_aead_key(uint8_t* dst,
+                                                const uint8_t* kdf_key,
+                                                const uint8_t* kdf_counter) {
+  unsigned char buf[EVP_MAX_MD_SIZE];
+  unsigned char ctr = 1;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+  HMAC_CTX hmac;
+  HMAC_CTX_init(&hmac);
+  if (!HMAC_Init_ex(&hmac, kdf_key, kKdfKeyLen, EVP_sha256(), nullptr) ||
+      !HMAC_Update(&hmac, kdf_counter, kKdfCounterLen) ||
+      !HMAC_Update(&hmac, &ctr, 1) || !HMAC_Final(&hmac, buf, nullptr)) {
+    HMAC_CTX_cleanup(&hmac);
+    return GRPC_STATUS_INTERNAL;
+  }
+  HMAC_CTX_cleanup(&hmac);
+#else
+  HMAC_CTX* hmac = HMAC_CTX_new();
+  if (hmac == nullptr) {
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (!HMAC_Init_ex(hmac, kdf_key, kKdfKeyLen, EVP_sha256(), nullptr) ||
+      !HMAC_Update(hmac, kdf_counter, kKdfCounterLen) ||
+      !HMAC_Update(hmac, &ctr, 1) || !HMAC_Final(hmac, buf, nullptr)) {
+    HMAC_CTX_free(hmac);
+    return GRPC_STATUS_INTERNAL;
+  }
+  HMAC_CTX_free(hmac);
+#endif
+  memcpy(dst, buf, kRekeyAeadKeyLen);
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code aes_gcm_rekey_if_required(
+    gsec_aes_gcm_aead_crypter* aes_gcm_crypter, const uint8_t* nonce,
+    char** error_details) {
+  // If rekey_data is nullptr, then rekeying is not supported and not required.
+  // If bytes 2-7 of kdf_counter differ from the (per message) nonce, then the
+  // encryption key is recomputed from a new kdf_counter to ensure that we don't
+  // encrypt more than 2^16 messages per encryption key (in each direction).
+  if (aes_gcm_crypter->rekey_data == nullptr ||
+      memcmp(aes_gcm_crypter->rekey_data->kdf_counter,
+             nonce + kKdfCounterOffset, kKdfCounterLen) == 0) {
+    return GRPC_STATUS_OK;
+  }
+  memcpy(aes_gcm_crypter->rekey_data->kdf_counter, nonce + kKdfCounterOffset,
+         kKdfCounterLen);
+  uint8_t aead_key[kRekeyAeadKeyLen];
+  if (aes_gcm_derive_aead_key(aead_key, aes_gcm_crypter->key,
+                              aes_gcm_crypter->rekey_data->kdf_counter) !=
+      GRPC_STATUS_OK) {
+    aes_gcm_format_errors("Rekeying failed in key derivation.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (!EVP_DecryptInit_ex(aes_gcm_crypter->ctx, nullptr, nullptr, aead_key,
+                          nullptr)) {
+    aes_gcm_format_errors("Rekeying failed in context update.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_encrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+    struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+    char** error_details) {
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(crypter);
+  // Input checks
+  if (nonce == nullptr) {
+    aes_gcm_format_errors("Nonce buffer is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (kAesGcmNonceLength != nonce_length) {
+    aes_gcm_format_errors("Nonce buffer has the wrong length.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (aad_vec_length > 0 && aad_vec == nullptr) {
+    aes_gcm_format_errors("Non-zero aad_vec_length but aad_vec is nullptr.",
+                          error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (plaintext_vec_length > 0 && plaintext_vec == nullptr) {
+    aes_gcm_format_errors(
+        "Non-zero plaintext_vec_length but plaintext_vec is nullptr.",
+        error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (ciphertext_bytes_written == nullptr) {
+    aes_gcm_format_errors("bytes_written is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  *ciphertext_bytes_written = 0;
+  // rekey if required
+  if (aes_gcm_rekey_if_required(aes_gcm_crypter, nonce, error_details) !=
+      GRPC_STATUS_OK) {
+    return GRPC_STATUS_INTERNAL;
+  }
+  // mask nonce if required
+  const uint8_t* nonce_aead = nonce;
+  uint8_t nonce_masked[kAesGcmNonceLength];
+  if (aes_gcm_crypter->rekey_data != nullptr) {
+    aes_gcm_mask_nonce(nonce_masked, aes_gcm_crypter->rekey_data->nonce_mask,
+                       nonce);
+    nonce_aead = nonce_masked;
+  }
+  // init openssl context
+  if (!EVP_EncryptInit_ex(aes_gcm_crypter->ctx, nullptr, nullptr, nullptr,
+                          nonce_aead)) {
+    aes_gcm_format_errors("Initializing nonce failed", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  // process aad
+  size_t i;
+  for (i = 0; i < aad_vec_length; i++) {
+    const uint8_t* aad = static_cast<uint8_t*>(aad_vec[i].iov_base);
+    size_t aad_length = aad_vec[i].iov_len;
+    if (aad_length == 0) {
+      continue;
+    }
+    size_t aad_bytes_read = 0;
+    if (aad == nullptr) {
+      aes_gcm_format_errors("aad is nullptr.", error_details);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    if (!EVP_EncryptUpdate(aes_gcm_crypter->ctx, nullptr,
+                           reinterpret_cast<int*>(&aad_bytes_read), aad,
+                           static_cast<int>(aad_length)) ||
+        aad_bytes_read != aad_length) {
+      aes_gcm_format_errors("Setting authenticated associated data failed",
+                            error_details);
+      return GRPC_STATUS_INTERNAL;
+    }
+  }
+  uint8_t* ciphertext = static_cast<uint8_t*>(ciphertext_vec.iov_base);
+  size_t ciphertext_length = ciphertext_vec.iov_len;
+  if (ciphertext == nullptr) {
+    aes_gcm_format_errors("ciphertext is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  // process plaintext
+  for (i = 0; i < plaintext_vec_length; i++) {
+    const uint8_t* plaintext = static_cast<uint8_t*>(plaintext_vec[i].iov_base);
+    size_t plaintext_length = plaintext_vec[i].iov_len;
+    if (plaintext == nullptr) {
+      if (plaintext_length == 0) {
+        continue;
+      }
+      aes_gcm_format_errors("plaintext is nullptr.", error_details);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    if (ciphertext_length < plaintext_length) {
+      aes_gcm_format_errors(
+          "ciphertext is not large enough to hold the result.", error_details);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    int bytes_written = 0;
+    int bytes_to_write = static_cast<int>(plaintext_length);
+    if (!EVP_EncryptUpdate(aes_gcm_crypter->ctx, ciphertext, &bytes_written,
+                           plaintext, bytes_to_write)) {
+      aes_gcm_format_errors("Encrypting plaintext failed.", error_details);
+      return GRPC_STATUS_INTERNAL;
+    }
+    if (bytes_written > bytes_to_write) {
+      aes_gcm_format_errors("More bytes written than expected.", error_details);
+      return GRPC_STATUS_INTERNAL;
+    }
+    ciphertext += bytes_written;
+    ciphertext_length -= bytes_written;
+  }
+  int bytes_written_temp = 0;
+  if (!EVP_EncryptFinal_ex(aes_gcm_crypter->ctx, nullptr,
+                           &bytes_written_temp)) {
+    aes_gcm_format_errors("Finalizing encryption failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (bytes_written_temp != 0) {
+    aes_gcm_format_errors("Openssl wrote some unexpected bytes.",
+                          error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (ciphertext_length < kAesGcmTagLength) {
+    aes_gcm_format_errors("ciphertext is too small to hold a tag.",
+                          error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+
+  if (!EVP_CIPHER_CTX_ctrl(aes_gcm_crypter->ctx, EVP_CTRL_GCM_GET_TAG,
+                           kAesGcmTagLength, ciphertext)) {
+    aes_gcm_format_errors("Writing tag failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  ciphertext += kAesGcmTagLength;
+  ciphertext_length -= kAesGcmTagLength;
+  *ciphertext_bytes_written = ciphertext_vec.iov_len - ciphertext_length;
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code gsec_aes_gcm_aead_crypter_decrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+    struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+    char** error_details) {
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  if (nonce == nullptr) {
+    aes_gcm_format_errors("Nonce buffer is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (kAesGcmNonceLength != nonce_length) {
+    aes_gcm_format_errors("Nonce buffer has the wrong length.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (aad_vec_length > 0 && aad_vec == nullptr) {
+    aes_gcm_format_errors("Non-zero aad_vec_length but aad_vec is nullptr.",
+                          error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (ciphertext_vec_length > 0 && ciphertext_vec == nullptr) {
+    aes_gcm_format_errors(
+        "Non-zero plaintext_vec_length but plaintext_vec is nullptr.",
+        error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  // Compute the total length so we can ensure we don't pass the tag into
+  // EVP_decrypt.
+  size_t total_ciphertext_length = 0;
+  size_t i;
+  for (i = 0; i < ciphertext_vec_length; i++) {
+    total_ciphertext_length += ciphertext_vec[i].iov_len;
+  }
+  if (total_ciphertext_length < kAesGcmTagLength) {
+    aes_gcm_format_errors("ciphertext is too small to hold a tag.",
+                          error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (plaintext_bytes_written == nullptr) {
+    aes_gcm_format_errors("bytes_written is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  *plaintext_bytes_written = 0;
+  // rekey if required
+  if (aes_gcm_rekey_if_required(aes_gcm_crypter, nonce, error_details) !=
+      GRPC_STATUS_OK) {
+    aes_gcm_format_errors("Rekeying failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  // mask nonce if required
+  const uint8_t* nonce_aead = nonce;
+  uint8_t nonce_masked[kAesGcmNonceLength];
+  if (aes_gcm_crypter->rekey_data != nullptr) {
+    aes_gcm_mask_nonce(nonce_masked, aes_gcm_crypter->rekey_data->nonce_mask,
+                       nonce);
+    nonce_aead = nonce_masked;
+  }
+  // init openssl context
+  if (!EVP_DecryptInit_ex(aes_gcm_crypter->ctx, nullptr, nullptr, nullptr,
+                          nonce_aead)) {
+    aes_gcm_format_errors("Initializing nonce failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  // process aad
+  for (i = 0; i < aad_vec_length; i++) {
+    const uint8_t* aad = static_cast<uint8_t*>(aad_vec[i].iov_base);
+    size_t aad_length = aad_vec[i].iov_len;
+    if (aad_length == 0) {
+      continue;
+    }
+    size_t aad_bytes_read = 0;
+    if (aad == nullptr) {
+      aes_gcm_format_errors("aad is nullptr.", error_details);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    if (!EVP_DecryptUpdate(aes_gcm_crypter->ctx, nullptr,
+                           reinterpret_cast<int*>(&aad_bytes_read), aad,
+                           static_cast<int>(aad_length)) ||
+        aad_bytes_read != aad_length) {
+      aes_gcm_format_errors("Setting authenticated associated data failed.",
+                            error_details);
+      return GRPC_STATUS_INTERNAL;
+    }
+  }
+  // process ciphertext
+  uint8_t* plaintext = static_cast<uint8_t*>(plaintext_vec.iov_base);
+  size_t plaintext_length = plaintext_vec.iov_len;
+  if (plaintext_length > 0 && plaintext == nullptr) {
+    aes_gcm_format_errors(
+        "plaintext is nullptr, but plaintext_length is positive.",
+        error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  const uint8_t* ciphertext = nullptr;
+  size_t ciphertext_length = 0;
+  for (i = 0;
+       i < ciphertext_vec_length && total_ciphertext_length > kAesGcmTagLength;
+       i++) {
+    ciphertext = static_cast<uint8_t*>(ciphertext_vec[i].iov_base);
+    ciphertext_length = ciphertext_vec[i].iov_len;
+    if (ciphertext == nullptr) {
+      if (ciphertext_length == 0) {
+        continue;
+      }
+      aes_gcm_format_errors("ciphertext is nullptr.", error_details);
+      memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    size_t bytes_written = 0;
+    size_t bytes_to_write = ciphertext_length;
+    // Don't include the tag
+    if (bytes_to_write > total_ciphertext_length - kAesGcmTagLength) {
+      bytes_to_write = total_ciphertext_length - kAesGcmTagLength;
+    }
+    if (plaintext_length < bytes_to_write) {
+      aes_gcm_format_errors(
+          "Not enough plaintext buffer to hold encrypted ciphertext.",
+          error_details);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    if (!EVP_DecryptUpdate(aes_gcm_crypter->ctx, plaintext,
+                           reinterpret_cast<int*>(&bytes_written), ciphertext,
+                           static_cast<int>(bytes_to_write))) {
+      aes_gcm_format_errors("Decrypting ciphertext failed.", error_details);
+      memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+      return GRPC_STATUS_INTERNAL;
+    }
+    if (bytes_written > ciphertext_length) {
+      aes_gcm_format_errors("More bytes written than expected.", error_details);
+      memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+      return GRPC_STATUS_INTERNAL;
+    }
+    ciphertext += bytes_written;
+    ciphertext_length -= bytes_written;
+    total_ciphertext_length -= bytes_written;
+    plaintext += bytes_written;
+    plaintext_length -= bytes_written;
+  }
+  if (total_ciphertext_length > kAesGcmTagLength) {
+    aes_gcm_format_errors(
+        "Not enough plaintext buffer to hold encrypted ciphertext.",
+        error_details);
+    memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  uint8_t tag[kAesGcmTagLength];
+  uint8_t* tag_tmp = tag;
+  if (ciphertext_length > 0) {
+    memcpy(tag_tmp, ciphertext, ciphertext_length);
+    tag_tmp += ciphertext_length;
+    total_ciphertext_length -= ciphertext_length;
+  }
+  for (; i < ciphertext_vec_length; i++) {
+    ciphertext = static_cast<uint8_t*>(ciphertext_vec[i].iov_base);
+    ciphertext_length = ciphertext_vec[i].iov_len;
+    if (ciphertext == nullptr) {
+      if (ciphertext_length == 0) {
+        continue;
+      }
+      aes_gcm_format_errors("ciphertext is nullptr.", error_details);
+      memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    }
+    memcpy(tag_tmp, ciphertext, ciphertext_length);
+    tag_tmp += ciphertext_length;
+    total_ciphertext_length -= ciphertext_length;
+  }
+  if (!EVP_CIPHER_CTX_ctrl(aes_gcm_crypter->ctx, EVP_CTRL_GCM_SET_TAG,
+                           kAesGcmTagLength, reinterpret_cast<void*>(tag))) {
+    aes_gcm_format_errors("Setting tag failed.", error_details);
+    memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+    return GRPC_STATUS_INTERNAL;
+  }
+  int bytes_written_temp = 0;
+  if (!EVP_DecryptFinal_ex(aes_gcm_crypter->ctx, nullptr,
+                           &bytes_written_temp)) {
+    aes_gcm_format_errors("Checking tag failed.", error_details);
+    memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (bytes_written_temp != 0) {
+    aes_gcm_format_errors("Openssl wrote some unexpected bytes.",
+                          error_details);
+    memset(plaintext_vec.iov_base, 0x00, plaintext_vec.iov_len);
+    return GRPC_STATUS_INTERNAL;
+  }
+  *plaintext_bytes_written = plaintext_vec.iov_len - plaintext_length;
+  return GRPC_STATUS_OK;
+}
+
+static void gsec_aes_gcm_aead_crypter_destroy(gsec_aead_crypter* crypter) {
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      reinterpret_cast<gsec_aes_gcm_aead_crypter*>(
+          const_cast<gsec_aead_crypter*>(crypter));
+  gpr_free(aes_gcm_crypter->key);
+  gpr_free(aes_gcm_crypter->rekey_data);
+  EVP_CIPHER_CTX_free(aes_gcm_crypter->ctx);
+}
+
+static const gsec_aead_crypter_vtable vtable = {
+    gsec_aes_gcm_aead_crypter_encrypt_iovec,
+    gsec_aes_gcm_aead_crypter_decrypt_iovec,
+    gsec_aes_gcm_aead_crypter_max_ciphertext_and_tag_length,
+    gsec_aes_gcm_aead_crypter_max_plaintext_length,
+    gsec_aes_gcm_aead_crypter_nonce_length,
+    gsec_aes_gcm_aead_crypter_key_length,
+    gsec_aes_gcm_aead_crypter_tag_length,
+    gsec_aes_gcm_aead_crypter_destroy};
+
+static grpc_status_code aes_gcm_new_evp_cipher_ctx(
+    gsec_aes_gcm_aead_crypter* aes_gcm_crypter, char** error_details) {
+  const EVP_CIPHER* cipher = nullptr;
+  bool is_rekey = aes_gcm_crypter->rekey_data != nullptr;
+  switch (is_rekey ? kRekeyAeadKeyLen : aes_gcm_crypter->key_length) {
+    case kAes128GcmKeyLength:
+      cipher = EVP_aes_128_gcm();
+      break;
+    case kAes256GcmKeyLength:
+      cipher = EVP_aes_256_gcm();
+      break;
+  }
+  const uint8_t* aead_key = aes_gcm_crypter->key;
+  uint8_t aead_key_rekey[kRekeyAeadKeyLen];
+  if (is_rekey) {
+    if (aes_gcm_derive_aead_key(aead_key_rekey, aes_gcm_crypter->key,
+                                aes_gcm_crypter->rekey_data->kdf_counter) !=
+        GRPC_STATUS_OK) {
+      aes_gcm_format_errors("Deriving key failed.", error_details);
+      return GRPC_STATUS_INTERNAL;
+    }
+    aead_key = aead_key_rekey;
+  }
+  if (!EVP_DecryptInit_ex(aes_gcm_crypter->ctx, cipher, nullptr, aead_key,
+                          nullptr)) {
+    aes_gcm_format_errors("Setting key failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (!EVP_CIPHER_CTX_ctrl(aes_gcm_crypter->ctx, EVP_CTRL_GCM_SET_IVLEN,
+                           static_cast<int>(aes_gcm_crypter->nonce_length),
+                           nullptr)) {
+    aes_gcm_format_errors("Setting nonce length failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  return GRPC_STATUS_OK;
+}
+
+grpc_status_code gsec_aes_gcm_aead_crypter_create(const uint8_t* key,
+                                                  size_t key_length,
+                                                  size_t nonce_length,
+                                                  size_t tag_length, bool rekey,
+                                                  gsec_aead_crypter** crypter,
+                                                  char** error_details) {
+  if (key == nullptr) {
+    aes_gcm_format_errors("key is nullptr.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (crypter == nullptr) {
+    aes_gcm_format_errors("crypter is nullptr.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  *crypter = nullptr;
+  if ((rekey && key_length != kAes128GcmRekeyKeyLength) ||
+      (!rekey && key_length != kAes128GcmKeyLength &&
+       key_length != kAes256GcmKeyLength) ||
+      (tag_length != kAesGcmTagLength) ||
+      (nonce_length != kAesGcmNonceLength)) {
+    aes_gcm_format_errors(
+        "Invalid key and/or nonce and/or tag length are provided at AEAD "
+        "crypter instance construction time.",
+        error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  gsec_aes_gcm_aead_crypter* aes_gcm_crypter =
+      static_cast<gsec_aes_gcm_aead_crypter*>(
+          gpr_malloc(sizeof(gsec_aes_gcm_aead_crypter)));
+  aes_gcm_crypter->crypter.vtable = &vtable;
+  aes_gcm_crypter->nonce_length = nonce_length;
+  aes_gcm_crypter->tag_length = tag_length;
+  if (rekey) {
+    aes_gcm_crypter->key_length = kKdfKeyLen;
+    aes_gcm_crypter->rekey_data = static_cast<gsec_aes_gcm_aead_rekey_data*>(
+        gpr_malloc(sizeof(gsec_aes_gcm_aead_rekey_data)));
+    memcpy(aes_gcm_crypter->rekey_data->nonce_mask, key + kKdfKeyLen,
+           kAesGcmNonceLength);
+    // Set kdf_counter to all-zero for initial key derivation.
+    memset(aes_gcm_crypter->rekey_data->kdf_counter, 0, kKdfCounterLen);
+  } else {
+    aes_gcm_crypter->key_length = key_length;
+    aes_gcm_crypter->rekey_data = nullptr;
+  }
+  aes_gcm_crypter->key =
+      static_cast<uint8_t*>(gpr_malloc(aes_gcm_crypter->key_length));
+  memcpy(aes_gcm_crypter->key, key, aes_gcm_crypter->key_length);
+  aes_gcm_crypter->ctx = EVP_CIPHER_CTX_new();
+  grpc_status_code status =
+      aes_gcm_new_evp_cipher_ctx(aes_gcm_crypter, error_details);
+  if (status != GRPC_STATUS_OK) {
+    gsec_aes_gcm_aead_crypter_destroy(&aes_gcm_crypter->crypter);
+    gpr_free(aes_gcm_crypter);
+    return status;
+  }
+  *crypter = &aes_gcm_crypter->crypter;
+  return GRPC_STATUS_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.cc
new file mode 100644
index 0000000..6236591
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.cc	
@@ -0,0 +1,189 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+static const char vtable_error_msg[] =
+    "crypter or crypter->vtable has not been initialized properly";
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+grpc_status_code gsec_aead_crypter_encrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* plaintext,
+    size_t plaintext_length, uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, size_t* bytes_written,
+    char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->encrypt_iovec != nullptr) {
+    struct iovec aad_vec = {(void*)aad, aad_length};
+    struct iovec plaintext_vec = {(void*)plaintext, plaintext_length};
+    struct iovec ciphertext_vec = {ciphertext_and_tag,
+                                   ciphertext_and_tag_length};
+    return crypter->vtable->encrypt_iovec(
+        crypter, nonce, nonce_length, &aad_vec, 1, &plaintext_vec, 1,
+        ciphertext_vec, bytes_written, error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_encrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+    struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+    char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->encrypt_iovec != nullptr) {
+    return crypter->vtable->encrypt_iovec(
+        crypter, nonce, nonce_length, aad_vec, aad_vec_length, plaintext_vec,
+        plaintext_vec_length, ciphertext_vec, ciphertext_bytes_written,
+        error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_decrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, uint8_t* plaintext,
+    size_t plaintext_length, size_t* bytes_written, char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->decrypt_iovec != nullptr) {
+    struct iovec aad_vec = {(void*)aad, aad_length};
+    struct iovec ciphertext_vec = {(void*)ciphertext_and_tag,
+                                   ciphertext_and_tag_length};
+    struct iovec plaintext_vec = {plaintext, plaintext_length};
+    return crypter->vtable->decrypt_iovec(
+        crypter, nonce, nonce_length, &aad_vec, 1, &ciphertext_vec, 1,
+        plaintext_vec, bytes_written, error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_decrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+    struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+    char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->encrypt_iovec != nullptr) {
+    return crypter->vtable->decrypt_iovec(
+        crypter, nonce, nonce_length, aad_vec, aad_vec_length, ciphertext_vec,
+        ciphertext_vec_length, plaintext_vec, plaintext_bytes_written,
+        error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_max_ciphertext_and_tag_length(
+    const gsec_aead_crypter* crypter, size_t plaintext_length,
+    size_t* max_ciphertext_and_tag_length_to_return, char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->max_ciphertext_and_tag_length != nullptr) {
+    return crypter->vtable->max_ciphertext_and_tag_length(
+        crypter, plaintext_length, max_ciphertext_and_tag_length_to_return,
+        error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_max_plaintext_length(
+    const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+    size_t* max_plaintext_length_to_return, char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->max_plaintext_length != nullptr) {
+    return crypter->vtable->max_plaintext_length(
+        crypter, ciphertext_and_tag_length, max_plaintext_length_to_return,
+        error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_nonce_length(
+    const gsec_aead_crypter* crypter, size_t* nonce_length_to_return,
+    char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->nonce_length != nullptr) {
+    return crypter->vtable->nonce_length(crypter, nonce_length_to_return,
+                                         error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_key_length(const gsec_aead_crypter* crypter,
+                                              size_t* key_length_to_return,
+                                              char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->key_length != nullptr) {
+    return crypter->vtable->key_length(crypter, key_length_to_return,
+                                       error_details);
+  }
+  /* An error occurred */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+grpc_status_code gsec_aead_crypter_tag_length(const gsec_aead_crypter* crypter,
+                                              size_t* tag_length_to_return,
+                                              char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->tag_length != nullptr) {
+    return crypter->vtable->tag_length(crypter, tag_length_to_return,
+                                       error_details);
+  }
+  /* An error occurred. */
+  maybe_copy_error_msg(vtable_error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+void gsec_aead_crypter_destroy(gsec_aead_crypter* crypter) {
+  if (crypter != nullptr) {
+    if (crypter->vtable != nullptr && crypter->vtable->destruct != nullptr) {
+      crypter->vtable->destruct(crypter);
+    }
+    gpr_free(crypter);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.h
new file mode 100644
index 0000000..4d65caa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/crypt/gsec.h	
@@ -0,0 +1,454 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H
+#define GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <grpc/grpc.h>
+
+struct iovec {
+  void* iov_base;
+  size_t iov_len;
+};
+
+/**
+ * A gsec interface for AEAD encryption schemes. The API is thread-compatible.
+ * Each implementation of this interface should specify supported values for
+ * key, nonce, and tag lengths.
+ */
+
+/* Key, nonce, and tag length in bytes */
+const size_t kAesGcmNonceLength = 12;
+const size_t kAesGcmTagLength = 16;
+const size_t kAes128GcmKeyLength = 16;
+const size_t kAes256GcmKeyLength = 32;
+
+// The first 32 bytes are used as a KDF key and the remaining 12 bytes are used
+// to mask the nonce.
+const size_t kAes128GcmRekeyKeyLength = 44;
+
+typedef struct gsec_aead_crypter gsec_aead_crypter;
+
+/**
+ * The gsec_aead_crypter is an API for different AEAD implementations such as
+ * AES_GCM. It encapsulates all AEAD-related operations in the format of
+ * V-table that stores pointers to functions implementing those operations.
+ * It also provides helper functions to wrap each of those function pointers.
+ *
+ * A typical usage of this object would be:
+ *
+ *------------------------------------------------------------------------------
+ * // Declare a gsec_aead_crypter object, and create and assign an instance
+ * // of specific AEAD implementation e.g., AES_GCM to it. We assume both
+ * // key and nonce contain cryptographically secure random bytes, and the key
+ * // can be derived from an upper-layer application.
+ * gsec_aead_crypter* crypter;
+ * char* error_in_creation;
+ * // User can populate the message with any 100 bytes data.
+ * uint8_t* message = gpr_malloc(100);
+ * grpc_status_code creation_status = gsec_aes_gcm_aead_crypter_create(key,
+ *                                                      kAes128GcmKeyLength,
+ *                                                      kAesGcmNonceLength,
+ *                                                      kAesGcmTagLength,
+ *                                                      &crypter,
+ *                                                      false,
+ *                                                      0
+ *                                                      &error_in_creation);
+ *
+ * if (creation_status == GRPC_STATUS_OK) {
+ *    // Allocate a correct amount of memory to hold a ciphertext.
+ *    size_t clength = 0;
+ *    gsec_aead_crypter_max_ciphertext_and_tag_length(crypter, 100, &clength,
+ *                                                    nullptr);
+ *    uint8_t* ciphertext = gpr_malloc(clength);
+ *
+ *    // Perform encryption
+ *    size_t num_encrypted_bytes = 0;
+ *    char* error_in_encryption = nullptr;
+ *    grpc_status_code status = gsec_aead_crypter_encrypt(crypter, nonce,
+ *                                                        kAesGcmNonceLength,
+ *                                                        nullptr, 0, message,
+ *                                                        100, ciphertext,
+ *                                                        clength,
+ *                                                        &num_encrypted_bytes,
+ *                                                        &error_in_encryption);
+ * if (status == GRPC_STATUS_OK) {
+ *       // Allocate a correct amount of memory to hold a plaintext.
+ *       size_t plength = 0;
+ *       gsec_aead_crypter_max_plaintext_length(crypter, num_encrypted_bytes,
+ *                                              &plength, nullptr);
+ *       uint8_t* plaintext = gpr_malloc(plength);
+ *
+ *       // Perform decryption.
+ *       size_t num_decrypted_bytes = 0;
+ *       char* error_in_decryption = nullptr;
+ *       status = gsec_aead_crypter_decrypt(crypter, nonce,
+ *                                          kAesGcmNonceLength, nullptr, 0,
+ *                                          ciphertext, num_encrypted_bytes,
+ *                                          plaintext, plength,
+ *                                          &num_decrypted_bytes,
+ *                                          &error_in_decryption);
+ *       if (status != GRPC_STATUS_OK) {
+ *         fprintf(stderr, "AEAD decrypt operation failed with error code:"
+ *                         "%d, message: %s\n", status, error_in_decryption);
+ *       }
+ *       ...
+ *       gpr_free(plaintext);
+ *       gpr_free(error_in_decryption);
+ *    } else {
+ *        fprintf(stderr, "AEAD encrypt operation failed with error code:"
+ *                        "%d, message: %s\n", status, error_in_encryption);
+ *    }
+ *    ...
+ *    gpr_free(ciphertext);
+ *    gpr_free(error_in_encryption);
+ * } else {
+ *   fprintf(stderr, "Creation of AEAD crypter instance failed with error code:"
+ *                   "%d, message: %s\n", creation_status, error_in_creation);
+ * }
+ *
+ * // Destruct AEAD crypter instance.
+ * if (creation_status == GRPC_STATUS_OK) {
+ *   gsec_aead_crypter_destroy(crypter);
+ * }
+ * gpr_free(error_in_creation);
+ * gpr_free(message);
+ * -----------------------------------------------------------------------------
+ */
+
+/* V-table for gsec AEAD operations */
+typedef struct gsec_aead_crypter_vtable {
+  grpc_status_code (*encrypt_iovec)(
+      gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+      const struct iovec* aad_vec, size_t aad_vec_length,
+      const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+      struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+      char** error_details);
+  grpc_status_code (*decrypt_iovec)(
+      gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+      const struct iovec* aad_vec, size_t aad_vec_length,
+      const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+      struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+      char** error_details);
+  grpc_status_code (*max_ciphertext_and_tag_length)(
+      const gsec_aead_crypter* crypter, size_t plaintext_length,
+      size_t* max_ciphertext_and_tag_length_to_return, char** error_details);
+  grpc_status_code (*max_plaintext_length)(
+      const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+      size_t* max_plaintext_length_to_return, char** error_details);
+  grpc_status_code (*nonce_length)(const gsec_aead_crypter* crypter,
+                                   size_t* nonce_length_to_return,
+                                   char** error_details);
+  grpc_status_code (*key_length)(const gsec_aead_crypter* crypter,
+                                 size_t* key_length_to_return,
+                                 char** error_details);
+  grpc_status_code (*tag_length)(const gsec_aead_crypter* crypter,
+                                 size_t* tag_length_to_return,
+                                 char** error_details);
+  void (*destruct)(gsec_aead_crypter* crypter);
+} gsec_aead_crypter_vtable;
+
+/* Main struct for gsec interface */
+struct gsec_aead_crypter {
+  const struct gsec_aead_crypter_vtable* vtable;
+};
+
+/**
+ * This method performs an AEAD encrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad: buffer containing data that needs to be authenticated but not
+ *   encrypted with its size equal to aad_length.
+ * - aad_length: size of aad buffer, which should be zero if the buffer is
+ *   nullptr.
+ * - plaintext: buffer containing data that needs to be both encrypted and
+ *   authenticated with its size equal to plaintext_length.
+ * - plaintext_length: size of plaintext buffer, which should be zero if
+ *   plaintext is nullptr.
+ * - ciphertext_and_tag: buffer that will contain ciphertext and tags the method
+ *   produced. The buffer should not overlap the plaintext buffer, and pointers
+ *   to those buffers should not be equal. Also if the ciphertext+tag buffer is
+ *   nullptr, the plaintext_length should be zero.
+ * - ciphertext_and_tag_length: size of ciphertext+tag buffer, which should be
+ *   at least as long as the one returned from method
+ *   gsec_aead_crypter_max_ciphertext_and_tag_length.
+ * - bytes_written: the actual number of bytes written to the ciphertext+tag
+ *   buffer. If bytes_written is nullptr, the plaintext_length should be zero.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of encryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+grpc_status_code gsec_aead_crypter_encrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* plaintext,
+    size_t plaintext_length, uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, size_t* bytes_written,
+    char** error_details);
+
+/**
+ * This method performs an AEAD encrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad_vec: an iovec array containing data that needs to be authenticated but
+ *   not encrypted.
+ * - aad_vec_length: the array length of aad_vec.
+ * - plaintext_vec: an iovec array containing data that needs to be both
+ *   encrypted and authenticated.
+ * - plaintext_vec_length: the array length of plaintext_vec.
+ * - ciphertext_vec: an iovec containing a ciphertext buffer. The buffer should
+ *   not overlap the plaintext buffer.
+ * - ciphertext_bytes_written: the actual number of bytes written to
+ *   ciphertext_vec.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of encryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+grpc_status_code gsec_aead_crypter_encrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* plaintext_vec, size_t plaintext_vec_length,
+    struct iovec ciphertext_vec, size_t* ciphertext_bytes_written,
+    char** error_details);
+
+/**
+ * This method performs an AEAD decrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad: buffer containing data that needs to be authenticated only.
+ * - aad_length: size of aad buffer, which should be zero if the buffer is
+ *   nullptr.
+ * - ciphertext_and_tag: buffer containing ciphertext and tag.
+ * - ciphertext_and_tag_length: length of ciphertext and tag. It should be zero
+ *   if any of plaintext, ciphertext_and_tag, or bytes_written is nullptr. Also,
+ *   ciphertext_and_tag_length should be at least as large as the tag length set
+ *   at AEAD crypter instance construction time.
+ * - plaintext: buffer containing decrypted and authenticated data the method
+ *   produced. The buffer should not overlap with the ciphertext+tag buffer, and
+ *   pointers to those buffers should not be equal.
+ * - plaintext_length: size of plaintext buffer, which should be at least as
+ *   long as the one returned from gsec_aead_crypter_max_plaintext_length
+ *   method.
+ * - bytes_written: the actual number of bytes written to the plaintext
+ *   buffer.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of decryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_decrypt(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const uint8_t* aad, size_t aad_length, const uint8_t* ciphertext_and_tag,
+    size_t ciphertext_and_tag_length, uint8_t* plaintext,
+    size_t plaintext_length, size_t* bytes_written, char** error_details);
+
+/**
+ * This method performs an AEAD decrypt operation.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce: buffer containing a nonce with its size equal to nonce_length.
+ * - nonce_length: size of nonce buffer, and must be equal to the value returned
+ *   from method gsec_aead_crypter_nonce_length.
+ * - aad_vec: an iovec array containing data that needs to be authenticated but
+ *   not encrypted.
+ * - aad_vec_length: the array length of aad_vec.
+ * - ciphertext_vec: an iovec array containing the ciphertext and tag.
+ * - ciphertext_vec_length: the array length of ciphertext_vec.
+ * - plaintext_vec: an iovec containing a plaintext buffer. The buffer should
+ *   not overlap the ciphertext buffer.
+ * - plaintext_bytes_written: the actual number of bytes written to
+ *   plaintext_vec.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of decryption, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_decrypt_iovec(
+    gsec_aead_crypter* crypter, const uint8_t* nonce, size_t nonce_length,
+    const struct iovec* aad_vec, size_t aad_vec_length,
+    const struct iovec* ciphertext_vec, size_t ciphertext_vec_length,
+    struct iovec plaintext_vec, size_t* plaintext_bytes_written,
+    char** error_details);
+
+/**
+ * This method computes the size of ciphertext+tag buffer that must be passed to
+ * gsec_aead_crypter_encrypt function to ensure correct encryption of a
+ * plaintext. The actual size of ciphertext+tag written to the buffer could be
+ * smaller.
+ *
+ * - crypter: AEAD crypter instance.
+ * - plaintext_length: length of plaintext.
+ * - max_ciphertext_and_tag_length_to_return: the size of ciphertext+tag buffer
+ *   the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_max_ciphertext_and_tag_length(
+    const gsec_aead_crypter* crypter, size_t plaintext_length,
+    size_t* max_ciphertext_and_tag_length_to_return, char** error_details);
+
+/**
+ * This method computes the size of plaintext buffer that must be passed to
+ * gsec_aead_crypter_decrypt function to ensure correct decryption of a
+ * ciphertext. The actual size of plaintext written to the buffer could be
+ * smaller.
+ *
+ * - crypter: AEAD crypter instance.
+ * - ciphertext_and_tag_length: length of ciphertext and tag.
+ * - max_plaintext_length_to_return: the size of plaintext buffer the method
+ *   returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_max_plaintext_length(
+    const gsec_aead_crypter* crypter, size_t ciphertext_and_tag_length,
+    size_t* max_plaintext_length_to_return, char** error_details);
+
+/**
+ * This method returns a valid size of nonce array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - nonce_length_to_return: the length of nonce array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_nonce_length(
+    const gsec_aead_crypter* crypter, size_t* nonce_length_to_return,
+    char** error_details);
+
+/**
+ * This method returns a valid size of key array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - key_length_to_return: the length of key array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_key_length(const gsec_aead_crypter* crypter,
+                                              size_t* key_length_to_return,
+                                              char** error_details);
+/**
+ * This method returns a valid size of tag array used at the construction of
+ * AEAD crypter instance. It is also the size that should be passed to encrypt
+ * and decrypt methods executed on the instance.
+ *
+ * - crypter: AEAD crypter instance.
+ * - tag_length_to_return: the length of tag array the method returns.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On the success of execution, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code gsec_aead_crypter_tag_length(const gsec_aead_crypter* crypter,
+                                              size_t* tag_length_to_return,
+                                              char** error_details);
+
+/**
+ * This method destroys an AEAD crypter instance by de-allocating all of its
+ * occupied memory.
+ *
+ * - crypter: AEAD crypter instance that needs to be destroyed.
+ */
+void gsec_aead_crypter_destroy(gsec_aead_crypter* crypter);
+
+/**
+ * This method creates an AEAD crypter instance of AES-GCM encryption scheme
+ * which supports 16 and 32 bytes long keys, 12 and 16 bytes long nonces, and
+ * 16 bytes long tags. It should be noted that once the lengths of key, nonce,
+ * and tag are determined at construction time, they cannot be modified later.
+ *
+ * - key: buffer containing a key which is binded with AEAD crypter instance.
+ * - key_length: length of a key in bytes, which should be 44 if rekeying is
+ *   enabled and 16 or 32 otherwise.
+ * - nonce_length: length of a nonce in bytes, which should be either 12 or 16.
+ * - tag_length: length of a tag in bytes, which should be always 16.
+ * - rekey: enable nonce-based rekeying and nonce-masking.
+ * - crypter: address of AES_GCM crypter instance returned from the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of instance creation, it stores the address of instance at
+ * crypter. Otherwise, it returns an error status code together with its details
+ * specified in error_details.
+ */
+grpc_status_code gsec_aes_gcm_aead_crypter_create(const uint8_t* key,
+                                                  size_t key_length,
+                                                  size_t nonce_length,
+                                                  size_t tag_length, bool rekey,
+                                                  gsec_aead_crypter** crypter,
+                                                  char** error_details);
+
+#endif /* GRPC_CORE_TSI_ALTS_CRYPT_GSEC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.cc
new file mode 100644
index 0000000..de163e3
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.cc	
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+grpc_status_code alts_counter_create(bool is_client, size_t counter_size,
+                                     size_t overflow_size,
+                                     alts_counter** crypter_counter,
+                                     char** error_details) {
+  /* Perform input sanity check. */
+  if (counter_size == 0) {
+    const char error_msg[] = "counter_size is invalid.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (overflow_size == 0 || overflow_size >= counter_size) {
+    const char error_msg[] = "overflow_size is invalid.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (crypter_counter == nullptr) {
+    const char error_msg[] = "crypter_counter is nullptr.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  *crypter_counter =
+      static_cast<alts_counter*>(gpr_malloc(sizeof(**crypter_counter)));
+  (*crypter_counter)->size = counter_size;
+  (*crypter_counter)->overflow_size = overflow_size;
+  (*crypter_counter)->counter =
+      static_cast<unsigned char*>(gpr_zalloc(counter_size));
+  if (is_client) {
+    ((*crypter_counter)->counter)[counter_size - 1] = 0x80;
+  }
+  return GRPC_STATUS_OK;
+}
+
+grpc_status_code alts_counter_increment(alts_counter* crypter_counter,
+                                        bool* is_overflow,
+                                        char** error_details) {
+  /* Perform input sanity check. */
+  if (crypter_counter == nullptr) {
+    const char error_msg[] = "crypter_counter is nullptr.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (is_overflow == nullptr) {
+    const char error_msg[] = "is_overflow is nullptr.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  /* Increment the internal counter. */
+  size_t i = 0;
+  for (; i < crypter_counter->overflow_size; i++) {
+    (crypter_counter->counter)[i]++;
+    if ((crypter_counter->counter)[i] != 0x00) {
+      break;
+    }
+  }
+  /**
+   * If the lower overflow_size bytes are all zero, the counter has overflowed.
+   */
+  if (i == crypter_counter->overflow_size) {
+    *is_overflow = true;
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  *is_overflow = false;
+  return GRPC_STATUS_OK;
+}
+
+size_t alts_counter_get_size(alts_counter* crypter_counter) {
+  if (crypter_counter == nullptr) {
+    return 0;
+  }
+  return crypter_counter->size;
+}
+
+unsigned char* alts_counter_get_counter(alts_counter* crypter_counter) {
+  if (crypter_counter == nullptr) {
+    return nullptr;
+  }
+  return crypter_counter->counter;
+}
+
+void alts_counter_destroy(alts_counter* crypter_counter) {
+  if (crypter_counter != nullptr) {
+    gpr_free(crypter_counter->counter);
+    gpr_free(crypter_counter);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.h
new file mode 100644
index 0000000..d705638
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_counter.h	
@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <grpc/grpc.h>
+
+/* Main struct for a crypter counter managed within seal/unseal operations. */
+typedef struct alts_counter {
+  size_t size;
+  size_t overflow_size;
+  unsigned char* counter;
+} alts_counter;
+
+/**
+ * This method creates and initializes an alts_counter instance.
+ *
+ * - is_client: a flag indicating if the alts_counter instance will be used
+ *   at client (is_client = true) or server (is_client = false) side.
+ * - counter_size: size of buffer holding the counter value.
+ * - overflow_size: overflow size in bytes. The counter instance can be used
+ *   to produce at most 2^(overflow_size*8) frames.
+ * - crypter_counter: an alts_counter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_counter_create(bool is_client, size_t counter_size,
+                                     size_t overflow_size,
+                                     alts_counter** crypter_counter,
+                                     char** error_details);
+
+/**
+ * This method increments the internal counter.
+ *
+ * - crypter_counter: an alts_counter instance.
+ * - is_overflow: after incrementing the internal counter, if an overflow
+ *   occurs, is_overflow is set to true, and no further calls to
+ *   alts_counter_increment() should be made. Otherwise, is_overflow is set to
+ *   false.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_counter_increment(alts_counter* crypter_counter,
+                                        bool* is_overflow,
+                                        char** error_details);
+
+/**
+ * This method returns the size of counter buffer.
+ *
+ * - crypter_counter: an alts_counter instance.
+ */
+size_t alts_counter_get_size(alts_counter* crypter_counter);
+
+/**
+ * This method returns the counter buffer.
+ *
+ * - crypter_counter: an alts_counter instance.
+ */
+unsigned char* alts_counter_get_counter(alts_counter* crypter_counter);
+
+/**
+ * This method de-allocates all memory allocated to an alts_coutner instance.
+ * - crypter_counter: an alts_counter instance.
+ */
+void alts_counter_destroy(alts_counter* crypter_counter);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.cc
new file mode 100644
index 0000000..56f0512
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.cc	
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+grpc_status_code alts_crypter_process_in_place(
+    alts_crypter* crypter, unsigned char* data, size_t data_allocated_size,
+    size_t data_size, size_t* output_size, char** error_details) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->process_in_place != nullptr) {
+    return crypter->vtable->process_in_place(crypter, data, data_allocated_size,
+                                             data_size, output_size,
+                                             error_details);
+  }
+  /* An error occurred. */
+  const char error_msg[] =
+      "crypter or crypter->vtable has not been initialized properly.";
+  maybe_copy_error_msg(error_msg, error_details);
+  return GRPC_STATUS_INVALID_ARGUMENT;
+}
+
+size_t alts_crypter_num_overhead_bytes(const alts_crypter* crypter) {
+  if (crypter != nullptr && crypter->vtable != nullptr &&
+      crypter->vtable->num_overhead_bytes != nullptr) {
+    return crypter->vtable->num_overhead_bytes(crypter);
+  }
+  /* An error occurred. */
+  return 0;
+}
+
+void alts_crypter_destroy(alts_crypter* crypter) {
+  if (crypter != nullptr) {
+    if (crypter->vtable != nullptr && crypter->vtable->destruct != nullptr) {
+      crypter->vtable->destruct(crypter);
+    }
+    gpr_free(crypter);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.h
new file mode 100644
index 0000000..3140778
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_crypter.h	
@@ -0,0 +1,255 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+/**
+ * An alts_crypter interface for an ALTS record protocol providing
+ * seal/unseal functionality. The interface is thread-compatible.
+ */
+
+typedef struct alts_crypter alts_crypter;
+
+/**
+ * A typical usage of the interface would be
+ *------------------------------------------------------------------------------
+ * // Perform a seal operation. We assume the gsec_aead_crypter instance -
+ * // client_aead_crypter is created beforehand with a 16-byte key and 12-byte
+ * // nonce length.
+ *
+ * alts_crypter* client = nullptr;
+ * char* client_error_in_creation = nullptr;
+ * unsigned char* data = nullptr;
+ * grpc_status_code client_status =
+ *                 alts_seal_crypter_create(client_aead_crypter, 1, 5, &client,
+ *                                          &client_error_in_creation);
+ * if (client_status == GRPC_STATUS_OK) {
+ *   size_t data_size = 100;
+ *   size_t num_overhead_bytes = alts_crypter_num_overhead_bytes(client);
+ *   size_t data_allocated_size = data_size + num_overhead_bytes;
+ *   data = gpr_malloc(data_allocated_size);
+ *   char* client_error_in_seal = nullptr;
+ *   // Client performs a seal operation.
+ *   client_status = alts_crypter_process_in_place(client, data,
+ *                                                 data_allocated_size,
+ *                                                 &data_size,
+ *                                                 &client_error_in_seal);
+ *   if (client_status != GRPC_STATUS_OK) {
+ *     fprintf(stderr, "seal operation failed with error code:"
+ *                     "%d, message: %s\n", client_status,
+ *                      client_error_in_seal);
+ *    }
+ *    gpr_free(client_error_in_seal);
+ * } else {
+ *     fprintf(stderr, "alts_crypter instance creation failed with error"
+ *                     "code: %d, message: %s\n", client_status,
+ *                      client_error_in_creation);
+ * }
+ *
+ * ...
+ *
+ * gpr_free(client_error_in_creation);
+ * alts_crypter_destroy(client);
+ *
+ * ...
+ *
+ * // Perform an unseal operation. We assume the gsec_aead_crypter instance -
+ * // server_aead_crypter is created beforehand with a 16-byte key and 12-byte
+ * // nonce length. The key used in the creation of gsec_aead_crypter instances
+ * // at server and client sides should be identical.
+ *
+ * alts_crypter* server = nullptr;
+ * char* server_error_in_creation = nullptr;
+ * grpc_status_code server_status =
+ *               alts_unseal_crypter_create(server_aead_crypter, 0, 5, &server,
+ *                                          &server_error_in_creation);
+ * if (server_status == GRPC_STATUS_OK) {
+ *   size_t num_overhead_bytes = alts_crypter_num_overhead_bytes(server);
+ *   size_t data_size = 100 + num_overhead_bytes;
+ *   size_t data_allocated_size = data_size;
+ *   char* server_error_in_unseal = nullptr;
+ *   // Server performs an unseal operation.
+ *   server_status = alts_crypter_process_in_place(server, data,
+ *                                                 data_allocated_size,
+ *                                                 &data_size,
+ *                                                 &server_error_in_unseal);
+ *   if (server_status != GRPC_STATUS_OK) {
+ *     fprintf(stderr, "unseal operation failed with error code:"
+ *                     "%d, message: %s\n", server_status,
+ *                      server_error_in_unseal);
+ *   }
+ *   gpr_free(server_error_in_unseal);
+ * } else {
+ *     fprintf(stderr, "alts_crypter instance creation failed with error"
+ *                     "code: %d, message: %s\n", server_status,
+ *                      server_error_in_creation);
+ * }
+ *
+ * ...
+ *
+ * gpr_free(data);
+ * gpr_free(server_error_in_creation);
+ * alts_crypter_destroy(server);
+ *
+ * ...
+ *------------------------------------------------------------------------------
+ */
+
+/* V-table for alts_crypter operations */
+typedef struct alts_crypter_vtable {
+  size_t (*num_overhead_bytes)(const alts_crypter* crypter);
+  grpc_status_code (*process_in_place)(alts_crypter* crypter,
+                                       unsigned char* data,
+                                       size_t data_allocated_size,
+                                       size_t data_size, size_t* output_size,
+                                       char** error_details);
+  void (*destruct)(alts_crypter* crypter);
+} alts_crypter_vtable;
+
+/* Main struct for alts_crypter interface */
+struct alts_crypter {
+  const alts_crypter_vtable* vtable;
+};
+
+/**
+ * This method gets the number of overhead bytes needed for sealing data that
+ * is the difference in size between the protected and raw data. The counter
+ * value used in a seal or unseal operation is locally maintained (not sent or
+ * received from the other peer) and therefore, will not be counted as part of
+ * overhead bytes.
+ *
+ * - crypter: an alts_crypter instance.
+ *
+ * On success, the method returns the number of overhead bytes. Otherwise, it
+ * returns zero.
+ *
+ */
+size_t alts_crypter_num_overhead_bytes(const alts_crypter* crypter);
+
+/**
+ * This method performs either a seal or an unseal operation depending on the
+ * alts_crypter instance - crypter passed to the method. If the crypter is
+ * an instance implementing a seal operation, the method will perform a seal
+ * operation. That is, it seals raw data and stores the result in-place, and the
+ * memory allocated for data must be at least data_length +
+ * alts_crypter_num_overhead_bytes(). If the crypter is an instance
+ * implementing an unseal operation, the method will perform an unseal
+ * operation. That is, it unseals protected data and stores the result in-place.
+ * The size of unsealed data will be data_length -
+ * alts_crypter_num_overhead_bytes(). Integrity tag will be verified during
+ * the unseal operation, and if verification fails, the data will be wiped.
+ * The counters used in both seal and unseal operations are managed internally.
+ *
+ * - crypter: an alts_crypter instance.
+ * - data: if the method performs a seal operation, the data represents raw data
+ *   that needs to be sealed. It also plays the role of buffer to hold the
+ *   protected data as a result of seal. If the method performs an unseal
+ *   operation, the data represents protected data that needs to be unsealed. It
+ *   also plays the role of buffer to hold raw data as a result of unseal.
+ * - data_allocated_size: the size of data buffer. The parameter is used to
+ *   check whether the result of either seal or unseal can be safely written to
+ *   the data buffer.
+ * - data_size: if the method performs a seal operation, data_size
+ *   represents the size of raw data that needs to be sealed, and if the method
+ *   performs an unseal operation, data_size represents the size of protected
+ *   data that needs to be unsealed.
+ * - output_size: size of data written to the data buffer after a seal or an
+ *   unseal operation.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_crypter_process_in_place(
+    alts_crypter* crypter, unsigned char* data, size_t data_allocated_size,
+    size_t data_size, size_t* output_size, char** error_details);
+
+/**
+ * This method creates an alts_crypter instance to be used to perform a seal
+ * operation, given a gsec_aead_crypter instance and a flag indicating if the
+ * created instance will be used at the client or server side. It takes
+ * ownership of gsec_aead_crypter instance.
+ *
+ * - gc: a gsec_aead_crypter instance used to perform AEAD encryption.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - crypter: an alts_crypter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns GRPC_STATUS_OK.
+ * Otherwise, it returns an error status code along with its details specified
+ * in error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_seal_crypter_create(gsec_aead_crypter* gc, bool is_client,
+                                          size_t overflow_size,
+                                          alts_crypter** crypter,
+                                          char** error_details);
+
+/**
+ * This method creates an alts_crypter instance used to perform an unseal
+ * operation, given a gsec_aead_crypter instance and a flag indicating if the
+ * created instance will be used at the client or server side. It takes
+ * ownership of gsec_aead_crypter instance.
+ *
+ * - gc: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - crypter: an alts_crypter instance to be returned from the method.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns GRPC_STATUS_OK.
+ * Otherwise, it returns an error status code along with its details specified
+ * in error_details (if error_details is not nullptr).
+ */
+grpc_status_code alts_unseal_crypter_create(gsec_aead_crypter* gc,
+                                            bool is_client,
+                                            size_t overflow_size,
+                                            alts_crypter** crypter,
+                                            char** error_details);
+
+/**
+ * This method destroys an alts_crypter instance by de-allocating all of its
+ * occupied memory. A gsec_aead_crypter instance passed in at alts_crypter
+ * instance creation time will be destroyed in this method.
+ *
+ * - crypter: an alts_crypter instance.
+ */
+void alts_crypter_destroy(alts_crypter* crypter);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.cc
new file mode 100644
index 0000000..bfa0b7a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.cc	
@@ -0,0 +1,407 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_frame_protector.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+#include "src/core/tsi/alts/frame_protector/frame_handler.h"
+#include "src/core/tsi/transport_security.h"
+
+constexpr size_t kMinFrameLength = 1024;
+constexpr size_t kDefaultFrameLength = 16 * 1024;
+constexpr size_t kMaxFrameLength = 1024 * 1024;
+
+// Limit k on number of frames such that at most 2^(8 * k) frames can be sent.
+constexpr size_t kAltsRecordProtocolRekeyFrameLimit = 8;
+constexpr size_t kAltsRecordProtocolFrameLimit = 5;
+
+/* Main struct for alts_frame_protector. */
+struct alts_frame_protector {
+  tsi_frame_protector base;
+  alts_crypter* seal_crypter;
+  alts_crypter* unseal_crypter;
+  alts_frame_writer* writer;
+  alts_frame_reader* reader;
+  unsigned char* in_place_protect_buffer;
+  unsigned char* in_place_unprotect_buffer;
+  size_t in_place_protect_bytes_buffered;
+  size_t in_place_unprotect_bytes_processed;
+  size_t max_protected_frame_size;
+  size_t max_unprotected_frame_size;
+  size_t overhead_length;
+  size_t counter_overflow;
+};
+
+static tsi_result seal(alts_frame_protector* impl) {
+  char* error_details = nullptr;
+  size_t output_size = 0;
+  grpc_status_code status = alts_crypter_process_in_place(
+      impl->seal_crypter, impl->in_place_protect_buffer,
+      impl->max_protected_frame_size, impl->in_place_protect_bytes_buffered,
+      &output_size, &error_details);
+  impl->in_place_protect_bytes_buffered = output_size;
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "%s", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  return TSI_OK;
+}
+
+static size_t max_encrypted_payload_bytes(alts_frame_protector* impl) {
+  return impl->max_protected_frame_size - kFrameHeaderSize;
+}
+
+static tsi_result alts_protect_flush(tsi_frame_protector* self,
+                                     unsigned char* protected_output_frames,
+                                     size_t* protected_output_frames_size,
+                                     size_t* still_pending_size) {
+  if (self == nullptr || protected_output_frames == nullptr ||
+      protected_output_frames_size == nullptr ||
+      still_pending_size == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid nullptr arguments to alts_protect_flush().");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_frame_protector* impl = reinterpret_cast<alts_frame_protector*>(self);
+  /**
+   * If there's nothing to flush (i.e., in_place_protect_buffer is empty),
+   * we're done.
+   */
+  if (impl->in_place_protect_bytes_buffered == 0) {
+    *protected_output_frames_size = 0;
+    *still_pending_size = 0;
+    return TSI_OK;
+  }
+  /**
+   * If a new frame can start being processed, we encrypt the payload and reset
+   * the frame writer to point to in_place_protect_buffer that holds the newly
+   * sealed frame.
+   */
+  if (alts_is_frame_writer_done(impl->writer)) {
+    tsi_result result = seal(impl);
+    if (result != TSI_OK) {
+      return result;
+    }
+    if (!alts_reset_frame_writer(impl->writer, impl->in_place_protect_buffer,
+                                 impl->in_place_protect_bytes_buffered)) {
+      gpr_log(GPR_ERROR, "Couldn't reset frame writer.");
+      return TSI_INTERNAL_ERROR;
+    }
+  }
+  /**
+   * Write the sealed frame as much as possible to protected_output_frames. It's
+   * possible a frame will not be written out completely by a single flush
+   * (i.e., still_pending_size != 0), in which case the flush should be called
+   * iteratively until a complete frame has been written out.
+   */
+  size_t written_frame_bytes = *protected_output_frames_size;
+  if (!alts_write_frame_bytes(impl->writer, protected_output_frames,
+                              &written_frame_bytes)) {
+    gpr_log(GPR_ERROR, "Couldn't write frame bytes.");
+    return TSI_INTERNAL_ERROR;
+  }
+  *protected_output_frames_size = written_frame_bytes;
+  *still_pending_size = alts_get_num_writer_bytes_remaining(impl->writer);
+  /**
+   * If the current frame has been finished processing (i.e., sealed and written
+   * out completely), we empty in_place_protect_buffer.
+   */
+  if (alts_is_frame_writer_done(impl->writer)) {
+    impl->in_place_protect_bytes_buffered = 0;
+  }
+  return TSI_OK;
+}
+
+static tsi_result alts_protect(tsi_frame_protector* self,
+                               const unsigned char* unprotected_bytes,
+                               size_t* unprotected_bytes_size,
+                               unsigned char* protected_output_frames,
+                               size_t* protected_output_frames_size) {
+  if (self == nullptr || unprotected_bytes == nullptr ||
+      unprotected_bytes_size == nullptr || protected_output_frames == nullptr ||
+      protected_output_frames_size == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid nullptr arguments to alts_protect().");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_frame_protector* impl = reinterpret_cast<alts_frame_protector*>(self);
+
+  /**
+   * If more payload can be buffered, we buffer it as much as possible to
+   * in_place_protect_buffer.
+   */
+  if (impl->in_place_protect_bytes_buffered + impl->overhead_length <
+      max_encrypted_payload_bytes(impl)) {
+    size_t bytes_to_buffer = GPR_MIN(*unprotected_bytes_size,
+                                     max_encrypted_payload_bytes(impl) -
+                                         impl->in_place_protect_bytes_buffered -
+                                         impl->overhead_length);
+    *unprotected_bytes_size = bytes_to_buffer;
+    if (bytes_to_buffer > 0) {
+      memcpy(
+          impl->in_place_protect_buffer + impl->in_place_protect_bytes_buffered,
+          unprotected_bytes, bytes_to_buffer);
+      impl->in_place_protect_bytes_buffered += bytes_to_buffer;
+    }
+  } else {
+    *unprotected_bytes_size = 0;
+  }
+  /**
+   * If a full frame has been buffered, we output it. If the first condition
+   * holds, then there exists an unencrypted full frame. If the second
+   * condition holds, then there exists a full frame that has already been
+   * encrypted.
+   */
+  if (max_encrypted_payload_bytes(impl) ==
+          impl->in_place_protect_bytes_buffered + impl->overhead_length ||
+      max_encrypted_payload_bytes(impl) ==
+          impl->in_place_protect_bytes_buffered) {
+    size_t still_pending_size = 0;
+    return alts_protect_flush(self, protected_output_frames,
+                              protected_output_frames_size,
+                              &still_pending_size);
+  } else {
+    *protected_output_frames_size = 0;
+    return TSI_OK;
+  }
+}
+
+static tsi_result unseal(alts_frame_protector* impl) {
+  char* error_details = nullptr;
+  size_t output_size = 0;
+  grpc_status_code status = alts_crypter_process_in_place(
+      impl->unseal_crypter, impl->in_place_unprotect_buffer,
+      impl->max_unprotected_frame_size,
+      alts_get_output_bytes_read(impl->reader), &output_size, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "%s", error_details);
+    gpr_free(error_details);
+    return TSI_DATA_CORRUPTED;
+  }
+  return TSI_OK;
+}
+
+static void ensure_buffer_size(alts_frame_protector* impl) {
+  if (!alts_has_read_frame_length(impl->reader)) {
+    return;
+  }
+  size_t buffer_space_remaining = impl->max_unprotected_frame_size -
+                                  alts_get_output_bytes_read(impl->reader);
+  /**
+   * Check if we need to resize in_place_unprotect_buffer in order to hold
+   * remaining bytes of a full frame.
+   */
+  if (buffer_space_remaining < alts_get_reader_bytes_remaining(impl->reader)) {
+    size_t buffer_len = alts_get_output_bytes_read(impl->reader) +
+                        alts_get_reader_bytes_remaining(impl->reader);
+    unsigned char* buffer = static_cast<unsigned char*>(gpr_malloc(buffer_len));
+    memcpy(buffer, impl->in_place_unprotect_buffer,
+           alts_get_output_bytes_read(impl->reader));
+    impl->max_unprotected_frame_size = buffer_len;
+    gpr_free(impl->in_place_unprotect_buffer);
+    impl->in_place_unprotect_buffer = buffer;
+    alts_reset_reader_output_buffer(
+        impl->reader, buffer + alts_get_output_bytes_read(impl->reader));
+  }
+}
+
+static tsi_result alts_unprotect(tsi_frame_protector* self,
+                                 const unsigned char* protected_frames_bytes,
+                                 size_t* protected_frames_bytes_size,
+                                 unsigned char* unprotected_bytes,
+                                 size_t* unprotected_bytes_size) {
+  if (self == nullptr || protected_frames_bytes == nullptr ||
+      protected_frames_bytes_size == nullptr || unprotected_bytes == nullptr ||
+      unprotected_bytes_size == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid nullptr arguments to alts_unprotect().");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_frame_protector* impl = reinterpret_cast<alts_frame_protector*>(self);
+  /**
+   * If a new frame can start being processed, we reset the frame reader to
+   * point to in_place_unprotect_buffer that will be used to hold deframed
+   * result.
+   */
+  if (alts_is_frame_reader_done(impl->reader) &&
+      ((alts_get_output_buffer(impl->reader) == nullptr) ||
+       (alts_get_output_bytes_read(impl->reader) ==
+        impl->in_place_unprotect_bytes_processed + impl->overhead_length))) {
+    if (!alts_reset_frame_reader(impl->reader,
+                                 impl->in_place_unprotect_buffer)) {
+      gpr_log(GPR_ERROR, "Couldn't reset frame reader.");
+      return TSI_INTERNAL_ERROR;
+    }
+    impl->in_place_unprotect_bytes_processed = 0;
+  }
+  /**
+   * If a full frame has not yet been read, we read more bytes from
+   * protected_frames_bytes until a full frame has been read. We also need to
+   * make sure in_place_unprotect_buffer is large enough to hold a complete
+   * frame.
+   */
+  if (!alts_is_frame_reader_done(impl->reader)) {
+    ensure_buffer_size(impl);
+    *protected_frames_bytes_size =
+        GPR_MIN(impl->max_unprotected_frame_size -
+                    alts_get_output_bytes_read(impl->reader),
+                *protected_frames_bytes_size);
+    size_t read_frames_bytes_size = *protected_frames_bytes_size;
+    if (!alts_read_frame_bytes(impl->reader, protected_frames_bytes,
+                               &read_frames_bytes_size)) {
+      gpr_log(GPR_ERROR, "Failed to process frame.");
+      return TSI_INTERNAL_ERROR;
+    }
+    *protected_frames_bytes_size = read_frames_bytes_size;
+  } else {
+    *protected_frames_bytes_size = 0;
+  }
+  /**
+   * If a full frame has been read, we unseal it, and write out the
+   * deframed result to unprotected_bytes.
+   */
+  if (alts_is_frame_reader_done(impl->reader)) {
+    if (impl->in_place_unprotect_bytes_processed == 0) {
+      tsi_result result = unseal(impl);
+      if (result != TSI_OK) {
+        return result;
+      }
+    }
+    size_t bytes_to_write = GPR_MIN(
+        *unprotected_bytes_size, alts_get_output_bytes_read(impl->reader) -
+                                     impl->in_place_unprotect_bytes_processed -
+                                     impl->overhead_length);
+    if (bytes_to_write > 0) {
+      memcpy(unprotected_bytes,
+             impl->in_place_unprotect_buffer +
+                 impl->in_place_unprotect_bytes_processed,
+             bytes_to_write);
+    }
+    *unprotected_bytes_size = bytes_to_write;
+    impl->in_place_unprotect_bytes_processed += bytes_to_write;
+    return TSI_OK;
+  } else {
+    *unprotected_bytes_size = 0;
+    return TSI_OK;
+  }
+}
+
+static void alts_destroy(tsi_frame_protector* self) {
+  alts_frame_protector* impl = reinterpret_cast<alts_frame_protector*>(self);
+  if (impl != nullptr) {
+    alts_crypter_destroy(impl->seal_crypter);
+    alts_crypter_destroy(impl->unseal_crypter);
+    gpr_free(impl->in_place_protect_buffer);
+    gpr_free(impl->in_place_unprotect_buffer);
+    alts_destroy_frame_writer(impl->writer);
+    alts_destroy_frame_reader(impl->reader);
+    gpr_free(impl);
+  }
+}
+
+static const tsi_frame_protector_vtable alts_frame_protector_vtable = {
+    alts_protect, alts_protect_flush, alts_unprotect, alts_destroy};
+
+static grpc_status_code create_alts_crypters(const uint8_t* key,
+                                             size_t key_size, bool is_client,
+                                             bool is_rekey,
+                                             alts_frame_protector* impl,
+                                             char** error_details) {
+  grpc_status_code status;
+  gsec_aead_crypter* aead_crypter_seal = nullptr;
+  gsec_aead_crypter* aead_crypter_unseal = nullptr;
+  status = gsec_aes_gcm_aead_crypter_create(key, key_size, kAesGcmNonceLength,
+                                            kAesGcmTagLength, is_rekey,
+                                            &aead_crypter_seal, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  status = gsec_aes_gcm_aead_crypter_create(
+      key, key_size, kAesGcmNonceLength, kAesGcmTagLength, is_rekey,
+      &aead_crypter_unseal, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  size_t overflow_size = is_rekey ? kAltsRecordProtocolRekeyFrameLimit
+                                  : kAltsRecordProtocolFrameLimit;
+  status = alts_seal_crypter_create(aead_crypter_seal, is_client, overflow_size,
+                                    &impl->seal_crypter, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  status =
+      alts_unseal_crypter_create(aead_crypter_unseal, is_client, overflow_size,
+                                 &impl->unseal_crypter, error_details);
+  return status;
+}
+
+tsi_result alts_create_frame_protector(const uint8_t* key, size_t key_size,
+                                       bool is_client, bool is_rekey,
+                                       size_t* max_protected_frame_size,
+                                       tsi_frame_protector** self) {
+  if (key == nullptr || self == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_create_frame_protector().");
+    return TSI_INTERNAL_ERROR;
+  }
+  char* error_details = nullptr;
+  alts_frame_protector* impl =
+      static_cast<alts_frame_protector*>(gpr_zalloc(sizeof(*impl)));
+  grpc_status_code status = create_alts_crypters(
+      key, key_size, is_client, is_rekey, impl, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to create ALTS crypters, %s.", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  /**
+   * Set maximum frame size to be used by a frame protector. If it is nullptr, a
+   * default frame size will be used. Otherwise, the provided frame size will be
+   * adjusted (if not falling into a valid frame range) and used.
+   */
+  size_t max_protected_frame_size_to_set = kDefaultFrameLength;
+  if (max_protected_frame_size != nullptr) {
+    *max_protected_frame_size =
+        GPR_MIN(*max_protected_frame_size, kMaxFrameLength);
+    *max_protected_frame_size =
+        GPR_MAX(*max_protected_frame_size, kMinFrameLength);
+    max_protected_frame_size_to_set = *max_protected_frame_size;
+  }
+  impl->max_protected_frame_size = max_protected_frame_size_to_set;
+  impl->max_unprotected_frame_size = max_protected_frame_size_to_set;
+  impl->in_place_protect_bytes_buffered = 0;
+  impl->in_place_unprotect_bytes_processed = 0;
+  impl->in_place_protect_buffer = static_cast<unsigned char*>(
+      gpr_malloc(sizeof(unsigned char) * max_protected_frame_size_to_set));
+  impl->in_place_unprotect_buffer = static_cast<unsigned char*>(
+      gpr_malloc(sizeof(unsigned char) * max_protected_frame_size_to_set));
+  impl->overhead_length = alts_crypter_num_overhead_bytes(impl->seal_crypter);
+  impl->writer = alts_create_frame_writer();
+  impl->reader = alts_create_frame_reader();
+  impl->base.vtable = &alts_frame_protector_vtable;
+  *self = &impl->base;
+  return TSI_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.h
new file mode 100644
index 0000000..321bffa
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_frame_protector.h	
@@ -0,0 +1,55 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+typedef struct alts_frame_protector alts_frame_protector;
+
+/**
+ * TODO: Add a parameter to the interface to support the use of
+ * different record protocols within a frame protector.
+ *
+ * This method creates a frame protector.
+ *
+ * - key: a symmetric key used to seal/unseal frames.
+ * - key_size: the size of symmetric key.
+ * - is_client: a flag indicating if the frame protector will be used at client
+ *   (is_client = true) or server (is_client = false) side.
+ * - is_rekey: a flag indicating if the frame protector will use an AEAD with
+ *   rekeying.
+ * - max_protected_frame_size: an in/out parameter indicating max frame size
+ *   to be used by the frame protector. If it is nullptr, the default frame
+ *   size will be used. Otherwise, the provided frame size will be adjusted (if
+ *   not falling into a valid frame range) and used.
+ * - self: a pointer to the frame protector returned from the method.
+ *
+ * This method returns TSI_OK on success and TSI_INTERNAL_ERROR otherwise.
+ */
+tsi_result alts_create_frame_protector(const uint8_t* key, size_t key_size,
+                                       bool is_client, bool is_rekey,
+                                       size_t* max_protected_frame_size,
+                                       tsi_frame_protector** self);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.cc
new file mode 100644
index 0000000..0574ed5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.cc	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h"
+
+#include <grpc/support/alloc.h>
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+grpc_status_code input_sanity_check(
+    const alts_record_protocol_crypter* rp_crypter, const unsigned char* data,
+    size_t* output_size, char** error_details) {
+  if (rp_crypter == nullptr) {
+    maybe_copy_error_msg("alts_crypter instance is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  } else if (data == nullptr) {
+    maybe_copy_error_msg("data is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  } else if (output_size == nullptr) {
+    maybe_copy_error_msg("output_size is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  return GRPC_STATUS_OK;
+}
+
+grpc_status_code increment_counter(alts_record_protocol_crypter* rp_crypter,
+                                   char** error_details) {
+  bool is_overflow = false;
+  grpc_status_code status =
+      alts_counter_increment(rp_crypter->ctr, &is_overflow, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  if (is_overflow) {
+    const char error_msg[] =
+        "crypter counter is wrapped. The connection"
+        "should be closed and the key should be deleted.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  return GRPC_STATUS_OK;
+}
+
+size_t alts_record_protocol_crypter_num_overhead_bytes(const alts_crypter* c) {
+  if (c != nullptr) {
+    size_t num_overhead_bytes = 0;
+    char* error_details = nullptr;
+    const alts_record_protocol_crypter* rp_crypter =
+        reinterpret_cast<const alts_record_protocol_crypter*>(c);
+    grpc_status_code status = gsec_aead_crypter_tag_length(
+        rp_crypter->crypter, &num_overhead_bytes, &error_details);
+    if (status == GRPC_STATUS_OK) {
+      return num_overhead_bytes;
+    }
+  }
+  return 0;
+}
+
+void alts_record_protocol_crypter_destruct(alts_crypter* c) {
+  if (c != nullptr) {
+    alts_record_protocol_crypter* rp_crypter =
+        reinterpret_cast<alts_record_protocol_crypter*>(c);
+    alts_counter_destroy(rp_crypter->ctr);
+    gsec_aead_crypter_destroy(rp_crypter->crypter);
+  }
+}
+
+alts_record_protocol_crypter* alts_crypter_create_common(
+    gsec_aead_crypter* crypter, bool is_client, size_t overflow_size,
+    char** error_details) {
+  if (crypter != nullptr) {
+    auto* rp_crypter = static_cast<alts_record_protocol_crypter*>(
+        gpr_malloc(sizeof(alts_record_protocol_crypter)));
+    size_t counter_size = 0;
+    grpc_status_code status =
+        gsec_aead_crypter_nonce_length(crypter, &counter_size, error_details);
+    if (status != GRPC_STATUS_OK) {
+      return nullptr;
+    }
+    /* Create a counter. */
+    status = alts_counter_create(is_client, counter_size, overflow_size,
+                                 &rp_crypter->ctr, error_details);
+    if (status != GRPC_STATUS_OK) {
+      return nullptr;
+    }
+    rp_crypter->crypter = crypter;
+    return rp_crypter;
+  }
+  const char error_msg[] = "crypter is nullptr.";
+  maybe_copy_error_msg(error_msg, error_details);
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h
new file mode 100644
index 0000000..682a8f7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h	
@@ -0,0 +1,114 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+
+/**
+ * This file contains common implementation that will be used in both seal and
+ * unseal operations.
+ */
+
+/**
+ * Main struct for alts_record_protocol_crypter that will be used in both
+ * seal and unseal operations.
+ */
+typedef struct alts_record_protocol_crypter {
+  alts_crypter base;
+  gsec_aead_crypter* crypter;
+  alts_counter* ctr;
+} alts_record_protocol_crypter;
+
+/**
+ * This method performs input sanity checks on a subset of inputs to
+ * alts_crypter_process_in_place() for both seal and unseal operations.
+ *
+ * - rp_crypter: an alts_record_protocol_crypter instance.
+ * - data: it represents raw data that needs to be sealed in a seal operation or
+ *   protected data that needs to be unsealed in an unseal operation.
+ * - output_size: size of data written to the data buffer after a seal or
+ *   unseal operation.
+ * - error_details: a buffer containing an error message if any of checked
+ *   inputs is nullptr. It is legal to pass nullptr into error_details and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code input_sanity_check(
+    const alts_record_protocol_crypter* rp_crypter, const unsigned char* data,
+    size_t* output_size, char** error_details);
+
+/**
+ * This method increments the counter within an alts_record_protocol_crypter
+ * instance.
+ *
+ * - rp_crypter: an alts_record_protocol_crypter instance.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly or the counter is wrapped. It is legal to pass nullptr
+ *   into error_details and otherwise, the parameter should be freed with
+ *   gpr_free.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise,
+ * it returns an error status code along with its details specified in
+ * error_details (if error_details is not nullptr).
+ */
+grpc_status_code increment_counter(alts_record_protocol_crypter* rp_crypter,
+                                   char** error_details);
+
+/**
+ * This method creates an alts_crypter instance, and populates the fields
+ * that are common to both seal and unseal operations.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption. The
+ *   function does not take ownership of crypter.
+ * - is_client: a flag indicating if the alts_crypter instance will be
+ *   used at the client (is_client = true) or server (is_client =
+ *   false) side.
+ * - overflow_size: overflow size of counter in bytes.
+ * - error_details: a buffer containing an error message if the method does
+ *   not function correctly. It is legal to pass nullptr into error_details, and
+ *   otherwise, the parameter should be freed with gpr_free.
+ *
+ * On success of creation, the method returns alts_record_protocol_crypter
+ * instance. Otherwise, it returns nullptr with its details specified in
+ * error_details (if error_details is not nullptr).
+ *
+ */
+alts_record_protocol_crypter* alts_crypter_create_common(
+    gsec_aead_crypter* crypter, bool is_client, size_t overflow_size,
+    char** error_details);
+
+/**
+ * For the following two methods, please refer to the corresponding API in
+ * alts_crypter.h for detailed specifications.
+ */
+size_t alts_record_protocol_crypter_num_overhead_bytes(const alts_crypter* c);
+
+void alts_record_protocol_crypter_destruct(alts_crypter* c);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_RECORD_PROTOCOL_CRYPTER_COMMON_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_seal_privacy_integrity_crypter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_seal_privacy_integrity_crypter.cc
new file mode 100644
index 0000000..f407831
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_seal_privacy_integrity_crypter.cc	
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+#include "src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h"
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+/* Perform input santity check for a seal operation. */
+static grpc_status_code seal_check(alts_crypter* c, const unsigned char* data,
+                                   size_t data_allocated_size, size_t data_size,
+                                   size_t* output_size, char** error_details) {
+  /* Do common input sanity check. */
+  grpc_status_code status = input_sanity_check(
+      reinterpret_cast<const alts_record_protocol_crypter*>(c), data,
+      output_size, error_details);
+  if (status != GRPC_STATUS_OK) return status;
+  /* Do seal-specific check. */
+  size_t num_overhead_bytes =
+      alts_crypter_num_overhead_bytes(reinterpret_cast<const alts_crypter*>(c));
+  if (data_size == 0) {
+    const char error_msg[] = "data_size is zero.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (data_size + num_overhead_bytes > data_allocated_size) {
+    const char error_msg[] =
+        "data_allocated_size is smaller than sum of data_size and "
+        "num_overhead_bytes.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code alts_seal_crypter_process_in_place(
+    alts_crypter* c, unsigned char* data, size_t data_allocated_size,
+    size_t data_size, size_t* output_size, char** error_details) {
+  grpc_status_code status = seal_check(c, data, data_allocated_size, data_size,
+                                       output_size, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Do AEAD encryption. */
+  alts_record_protocol_crypter* rp_crypter =
+      reinterpret_cast<alts_record_protocol_crypter*>(c);
+  status = gsec_aead_crypter_encrypt(
+      rp_crypter->crypter, alts_counter_get_counter(rp_crypter->ctr),
+      alts_counter_get_size(rp_crypter->ctr), nullptr /* aad */,
+      0 /* aad_length */, data, data_size, data, data_allocated_size,
+      output_size, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Increment the crypter counter. */
+  return increment_counter(rp_crypter, error_details);
+}
+
+static const alts_crypter_vtable vtable = {
+    alts_record_protocol_crypter_num_overhead_bytes,
+    alts_seal_crypter_process_in_place, alts_record_protocol_crypter_destruct};
+
+grpc_status_code alts_seal_crypter_create(gsec_aead_crypter* gc, bool is_client,
+                                          size_t overflow_size,
+                                          alts_crypter** crypter,
+                                          char** error_details) {
+  if (crypter == nullptr) {
+    const char error_msg[] = "crypter is nullptr.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  alts_record_protocol_crypter* rp_crypter =
+      alts_crypter_create_common(gc, !is_client, overflow_size, error_details);
+  if (rp_crypter == nullptr) {
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  rp_crypter->base.vtable = &vtable;
+  *crypter = &rp_crypter->base;
+  return GRPC_STATUS_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_unseal_privacy_integrity_crypter.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_unseal_privacy_integrity_crypter.cc
new file mode 100644
index 0000000..a5b7003
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/alts_unseal_privacy_integrity_crypter.cc	
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/alloc.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+#include "src/core/tsi/alts/frame_protector/alts_crypter.h"
+#include "src/core/tsi/alts/frame_protector/alts_record_protocol_crypter_common.h"
+
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+/* Perform input santity check. */
+static grpc_status_code unseal_check(alts_crypter* c, const unsigned char* data,
+                                     size_t /*data_allocated_size*/,
+                                     size_t data_size, size_t* output_size,
+                                     char** error_details) {
+  /* Do common input sanity check. */
+  grpc_status_code status = input_sanity_check(
+      reinterpret_cast<const alts_record_protocol_crypter*>(c), data,
+      output_size, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Do unseal-specific input check. */
+  size_t num_overhead_bytes =
+      alts_crypter_num_overhead_bytes(reinterpret_cast<const alts_crypter*>(c));
+  if (num_overhead_bytes > data_size) {
+    const char error_msg[] = "data_size is smaller than num_overhead_bytes.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  return GRPC_STATUS_OK;
+}
+
+static grpc_status_code alts_unseal_crypter_process_in_place(
+    alts_crypter* c, unsigned char* data, size_t data_allocated_size,
+    size_t data_size, size_t* output_size, char** error_details) {
+  grpc_status_code status = unseal_check(c, data, data_allocated_size,
+                                         data_size, output_size, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Do AEAD decryption. */
+  alts_record_protocol_crypter* rp_crypter =
+      reinterpret_cast<alts_record_protocol_crypter*>(c);
+  status = gsec_aead_crypter_decrypt(
+      rp_crypter->crypter, alts_counter_get_counter(rp_crypter->ctr),
+      alts_counter_get_size(rp_crypter->ctr), nullptr /* aad */,
+      0 /* aad_length */, data, data_size, data, data_allocated_size,
+      output_size, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Increment the crypter counter. */
+  return increment_counter(rp_crypter, error_details);
+}
+
+static const alts_crypter_vtable vtable = {
+    alts_record_protocol_crypter_num_overhead_bytes,
+    alts_unseal_crypter_process_in_place,
+    alts_record_protocol_crypter_destruct};
+
+grpc_status_code alts_unseal_crypter_create(gsec_aead_crypter* gc,
+                                            bool is_client,
+                                            size_t overflow_size,
+                                            alts_crypter** crypter,
+                                            char** error_details) {
+  if (crypter == nullptr) {
+    const char error_msg[] = "crypter is nullptr.";
+    maybe_copy_error_msg(error_msg, error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  alts_record_protocol_crypter* rp_crypter =
+      alts_crypter_create_common(gc, is_client, overflow_size, error_details);
+  if (rp_crypter == nullptr) {
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  rp_crypter->base.vtable = &vtable;
+  *crypter = &rp_crypter->base;
+  return GRPC_STATUS_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.cc
new file mode 100644
index 0000000..d3fda63
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.cc	
@@ -0,0 +1,218 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/frame_protector/frame_handler.h"
+
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+
+/* Use little endian to interpret a string of bytes as uint32_t. */
+static uint32_t load_32_le(const unsigned char* buffer) {
+  return (((uint32_t)buffer[3]) << 24) | (((uint32_t)buffer[2]) << 16) |
+         (((uint32_t)buffer[1]) << 8) | ((uint32_t)buffer[0]);
+}
+
+/* Store uint32_t as a string of little endian bytes. */
+static void store_32_le(uint32_t value, unsigned char* buffer) {
+  buffer[3] = (unsigned char)(value >> 24) & 0xFF;
+  buffer[2] = (unsigned char)(value >> 16) & 0xFF;
+  buffer[1] = (unsigned char)(value >> 8) & 0xFF;
+  buffer[0] = (unsigned char)(value)&0xFF;
+}
+
+/* Frame writer implementation. */
+alts_frame_writer* alts_create_frame_writer() {
+  alts_frame_writer* writer =
+      static_cast<alts_frame_writer*>(gpr_zalloc(sizeof(*writer)));
+  return writer;
+}
+
+bool alts_reset_frame_writer(alts_frame_writer* writer,
+                             const unsigned char* buffer, size_t length) {
+  if (buffer == nullptr) return false;
+  size_t max_input_size = SIZE_MAX - kFrameLengthFieldSize;
+  if (length > max_input_size) {
+    gpr_log(GPR_ERROR, "length must be at most %zu", max_input_size);
+    return false;
+  }
+  writer->input_buffer = buffer;
+  writer->input_size = length;
+  writer->input_bytes_written = 0;
+  writer->header_bytes_written = 0;
+  store_32_le(
+      static_cast<uint32_t>(writer->input_size + kFrameMessageTypeFieldSize),
+      writer->header_buffer);
+  store_32_le(kFrameMessageType, writer->header_buffer + kFrameLengthFieldSize);
+  return true;
+}
+
+bool alts_write_frame_bytes(alts_frame_writer* writer, unsigned char* output,
+                            size_t* bytes_size) {
+  if (bytes_size == nullptr || output == nullptr) return false;
+  if (alts_is_frame_writer_done(writer)) {
+    *bytes_size = 0;
+    return true;
+  }
+  size_t bytes_written = 0;
+  /* Write some header bytes, if needed. */
+  if (writer->header_bytes_written != sizeof(writer->header_buffer)) {
+    size_t bytes_to_write =
+        GPR_MIN(*bytes_size,
+                sizeof(writer->header_buffer) - writer->header_bytes_written);
+    memcpy(output, writer->header_buffer + writer->header_bytes_written,
+           bytes_to_write);
+    bytes_written += bytes_to_write;
+    *bytes_size -= bytes_to_write;
+    writer->header_bytes_written += bytes_to_write;
+    output += bytes_to_write;
+    if (writer->header_bytes_written != sizeof(writer->header_buffer)) {
+      *bytes_size = bytes_written;
+      return true;
+    }
+  }
+  /* Write some non-header bytes. */
+  size_t bytes_to_write =
+      GPR_MIN(writer->input_size - writer->input_bytes_written, *bytes_size);
+  memcpy(output, writer->input_buffer, bytes_to_write);
+  writer->input_buffer += bytes_to_write;
+  bytes_written += bytes_to_write;
+  writer->input_bytes_written += bytes_to_write;
+  *bytes_size = bytes_written;
+  return true;
+}
+
+bool alts_is_frame_writer_done(alts_frame_writer* writer) {
+  return writer->input_buffer == nullptr ||
+         writer->input_size == writer->input_bytes_written;
+}
+
+size_t alts_get_num_writer_bytes_remaining(alts_frame_writer* writer) {
+  return (sizeof(writer->header_buffer) - writer->header_bytes_written) +
+         (writer->input_size - writer->input_bytes_written);
+}
+
+void alts_destroy_frame_writer(alts_frame_writer* writer) { gpr_free(writer); }
+
+/* Frame reader implementation. */
+alts_frame_reader* alts_create_frame_reader() {
+  alts_frame_reader* reader =
+      static_cast<alts_frame_reader*>(gpr_zalloc(sizeof(*reader)));
+  return reader;
+}
+
+bool alts_is_frame_reader_done(alts_frame_reader* reader) {
+  return reader->output_buffer == nullptr ||
+         (reader->header_bytes_read == sizeof(reader->header_buffer) &&
+          reader->bytes_remaining == 0);
+}
+
+bool alts_has_read_frame_length(alts_frame_reader* reader) {
+  return sizeof(reader->header_buffer) == reader->header_bytes_read;
+}
+
+size_t alts_get_reader_bytes_remaining(alts_frame_reader* reader) {
+  return alts_has_read_frame_length(reader) ? reader->bytes_remaining : 0;
+}
+
+void alts_reset_reader_output_buffer(alts_frame_reader* reader,
+                                     unsigned char* buffer) {
+  reader->output_buffer = buffer;
+}
+
+bool alts_reset_frame_reader(alts_frame_reader* reader, unsigned char* buffer) {
+  if (buffer == nullptr) return false;
+  reader->output_buffer = buffer;
+  reader->bytes_remaining = 0;
+  reader->header_bytes_read = 0;
+  reader->output_bytes_read = 0;
+  return true;
+}
+
+bool alts_read_frame_bytes(alts_frame_reader* reader,
+                           const unsigned char* bytes, size_t* bytes_size) {
+  if (bytes_size == nullptr) return false;
+  if (bytes == nullptr) {
+    *bytes_size = 0;
+    return false;
+  }
+  if (alts_is_frame_reader_done(reader)) {
+    *bytes_size = 0;
+    return true;
+  }
+  size_t bytes_processed = 0;
+  /* Process the header, if needed. */
+  if (reader->header_bytes_read != sizeof(reader->header_buffer)) {
+    size_t bytes_to_write = GPR_MIN(
+        *bytes_size, sizeof(reader->header_buffer) - reader->header_bytes_read);
+    memcpy(reader->header_buffer + reader->header_bytes_read, bytes,
+           bytes_to_write);
+    reader->header_bytes_read += bytes_to_write;
+    bytes_processed += bytes_to_write;
+    bytes += bytes_to_write;
+    *bytes_size -= bytes_to_write;
+    if (reader->header_bytes_read != sizeof(reader->header_buffer)) {
+      *bytes_size = bytes_processed;
+      return true;
+    }
+    size_t frame_length = load_32_le(reader->header_buffer);
+    if (frame_length < kFrameMessageTypeFieldSize ||
+        frame_length > kFrameMaxSize) {
+      gpr_log(GPR_ERROR,
+              "Bad frame length (should be at least %zu, and at most %zu)",
+              kFrameMessageTypeFieldSize, kFrameMaxSize);
+      *bytes_size = 0;
+      return false;
+    }
+    size_t message_type =
+        load_32_le(reader->header_buffer + kFrameLengthFieldSize);
+    if (message_type != kFrameMessageType) {
+      gpr_log(GPR_ERROR, "Unsupported message type %zu (should be %zu)",
+              message_type, kFrameMessageType);
+      *bytes_size = 0;
+      return false;
+    }
+    reader->bytes_remaining = frame_length - kFrameMessageTypeFieldSize;
+  }
+  /* Process the non-header bytes. */
+  size_t bytes_to_write = GPR_MIN(*bytes_size, reader->bytes_remaining);
+  memcpy(reader->output_buffer, bytes, bytes_to_write);
+  reader->output_buffer += bytes_to_write;
+  bytes_processed += bytes_to_write;
+  reader->bytes_remaining -= bytes_to_write;
+  reader->output_bytes_read += bytes_to_write;
+  *bytes_size = bytes_processed;
+  return true;
+}
+
+size_t alts_get_output_bytes_read(alts_frame_reader* reader) {
+  return reader->output_bytes_read;
+}
+
+unsigned char* alts_get_output_buffer(alts_frame_reader* reader) {
+  return reader->output_buffer;
+}
+
+void alts_destroy_frame_reader(alts_frame_reader* reader) { gpr_free(reader); }
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.h
new file mode 100644
index 0000000..a703ff4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/frame_protector/frame_handler.h	
@@ -0,0 +1,236 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
+#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+const size_t kFrameMessageType = 0x06;
+const size_t kFrameLengthFieldSize = 4;
+const size_t kFrameMessageTypeFieldSize = 4;
+const size_t kFrameMaxSize = 1024 * 1024;
+const size_t kFrameHeaderSize =
+    kFrameLengthFieldSize + kFrameMessageTypeFieldSize;
+
+/**
+ * Implementation of frame reader and frame writer. All APIs in the
+ * header are thread-compatible.
+ */
+
+/**
+ * Main struct for a frame writer. It reads frames from an input buffer, and
+ * writes the contents as raw bytes. It does not own the input buffer.
+ */
+typedef struct alts_frame_writer {
+  const unsigned char* input_buffer;
+  unsigned char header_buffer[kFrameHeaderSize];
+  size_t input_bytes_written;
+  size_t header_bytes_written;
+  size_t input_size;
+} alts_frame_writer;
+
+/**
+ * Main struct for a frame reader. It reads raw bytes and puts the framed
+ * result into an output buffer. It does not own the output buffer.
+ */
+typedef struct alts_frame_reader {
+  unsigned char* output_buffer;
+  unsigned char header_buffer[kFrameHeaderSize];
+  size_t header_bytes_read;
+  size_t output_bytes_read;
+  size_t bytes_remaining;
+} alts_frame_reader;
+
+/**
+ * This method creates a frame writer instance and initializes its internal
+ * states.
+ */
+alts_frame_writer* alts_create_frame_writer();
+
+/**
+ * This method resets internal states of a frame writer and prepares to write
+ * a single frame. It does not take ownership of payload_buffer.
+ * The payload_buffer must outlive the writer.
+ *
+ * - writer: a frame writer instance.
+ * - buffer: a buffer storing full payload data to be framed.
+ * - length: size of payload data.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_reset_frame_writer(alts_frame_writer* writer,
+                             const unsigned char* buffer, size_t length);
+
+/**
+ * This method writes up to bytes_size bytes of a frame to output.
+ *
+ * - writer: a frame writer instance.
+ * - output: an output buffer used to store the frame.
+ * - bytes_size: an in/out parameter that stores the size of output buffer
+ *   before the call, and gets written the number of frame bytes written to the
+ *   buffer.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_write_frame_bytes(alts_frame_writer* writer, unsigned char* output,
+                            size_t* bytes_size);
+
+/**
+ * This method checks if a reset can be called to write a new frame. It returns
+ * true if it's the first time to frame a payload, or the current frame has
+ * been finished processing. It returns false if it's not ready yet to start a
+ * new frame (e.g., more payload data needs to be accumulated to process the
+ * current frame).
+ *
+ * if (alts_is_frame_writer_done(writer)) {
+ *   // a new frame can be written, call reset.
+ *   alts_reset_frame_writer(writer, payload_buffer, payload_size);
+ * } else {
+ *   // accumulate more payload data until a full frame can be written.
+ * }
+ *
+ * - writer: a frame writer instance.
+ */
+bool alts_is_frame_writer_done(alts_frame_writer* writer);
+
+/**
+ * This method returns the number of bytes left to write before a complete frame
+ * is formed.
+ *
+ * - writer: a frame writer instance.
+ */
+size_t alts_get_num_writer_bytes_remaining(alts_frame_writer* writer);
+
+/**
+ * This method destroys a frame writer instance.
+ *
+ * - writer: a frame writer instance.
+ */
+void alts_destroy_frame_writer(alts_frame_writer* writer);
+
+/**
+ * This method creates a frame reader instance and initializes its internal
+ * states.
+ */
+alts_frame_reader* alts_create_frame_reader();
+
+/**
+ * This method resets internal states of a frame reader (including setting its
+ * output_buffer with buffer), and prepares to write processed bytes to
+ * an output_buffer. It does not take ownership of buffer. The buffer must
+ * outlive reader.
+ *
+ * - reader: a frame reader instance.
+ * - buffer: an output buffer used to store deframed results.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_reset_frame_reader(alts_frame_reader* reader, unsigned char* buffer);
+
+/**
+ * This method processes up to the number of bytes given in bytes_size. It may
+ * choose not to process all the bytes, if, for instance, more bytes are
+ * given to the method than required to complete the current frame.
+ *
+ * - reader: a frame reader instance.
+ * - bytes: a buffer that stores data to be processed.
+ * - bytes_size: an in/out parameter that stores the size of bytes before the
+ *   call and gets written the number of bytes processed.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool alts_read_frame_bytes(alts_frame_reader* reader,
+                           const unsigned char* bytes, size_t* bytes_size);
+
+/**
+ * This method checks if a frame length has been read.
+ *
+ * - reader: a frame reader instance.
+ *
+ * The method returns true if a frame length has been read and false otherwise.
+ */
+bool alts_has_read_frame_length(alts_frame_reader* reader);
+
+/**
+ * This method returns the number of bytes the frame reader intends to write.
+ * It may only be called if alts_has_read_frame_length() returns true.
+ *
+ * - reader: a frame reader instance.
+ */
+size_t alts_get_reader_bytes_remaining(alts_frame_reader* reader);
+
+/**
+ * This method resets output_buffer but does not otherwise modify other internal
+ * states of a frame reader instance. After being set, the new output_buffer
+ * will hold the deframed payload held by the original output_buffer. It does
+ * not take ownership of buffer. The buffer must outlive the reader.
+ * To distinguish between two reset methods on a frame reader,
+ *
+ * if (alts_fh_is_frame_reader_done(reader)) {
+ *   // if buffer contains a full payload to be deframed, call reset.
+ *   alts_reset_frame_reader(reader, buffer);
+ * }
+ *
+ * // if remaining buffer space is not enough to hold a full payload
+ * if (buffer_space_remaining < alts_get_reader_bytes_remaining(reader)) {
+ *   // allocate enough space for a new buffer, copy back data processed so far,
+ *   // and call reset.
+ *   alts_reset_reader_output_buffer(reader, new_buffer).
+ * }
+ *
+ * - reader: a frame reader instance.
+ * - buffer: a buffer used to set reader's output_buffer.
+ */
+void alts_reset_reader_output_buffer(alts_frame_reader* reader,
+                                     unsigned char* buffer);
+
+/**
+ * This method checks if reset can be called to start processing a new frame.
+ * If true and reset was previously called, a full frame has been processed and
+ * the content of the frame is available in output_buffer.
+
+ * - reader: a frame reader instance.
+ */
+bool alts_is_frame_reader_done(alts_frame_reader* reader);
+
+/**
+ * This method returns output_bytes_read of a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+size_t alts_get_output_bytes_read(alts_frame_reader* reader);
+
+/**
+ * This method returns output_buffer of a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+unsigned char* alts_get_output_buffer(alts_frame_reader* reader);
+
+/**
+ * This method destroys a frame reader instance.
+ *
+ * - reader: a frame reader instance.
+ */
+void alts_destroy_frame_reader(alts_frame_reader* reader);
+
+#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.cc
new file mode 100644
index 0000000..2592763
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.cc	
@@ -0,0 +1,892 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <list>
+
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/tsi/alts/handshaker/alts_shared_resource.h"
+#include "src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h"
+#include "src/core/tsi/alts/handshaker/alts_tsi_utils.h"
+
+#define TSI_ALTS_INITIAL_BUFFER_SIZE 256
+
+const int kHandshakerClientOpNum = 4;
+
+struct alts_handshaker_client {
+  const alts_handshaker_client_vtable* vtable;
+};
+
+struct recv_message_result {
+  tsi_result status;
+  const unsigned char* bytes_to_send;
+  size_t bytes_to_send_size;
+  tsi_handshaker_result* result;
+};
+
+typedef struct alts_grpc_handshaker_client {
+  alts_handshaker_client base;
+  /* One ref is held by the entity that created this handshaker_client, and
+   * another ref is held by the pending RECEIVE_STATUS_ON_CLIENT op. */
+  gpr_refcount refs;
+  alts_tsi_handshaker* handshaker;
+  grpc_call* call;
+  /* A pointer to a function handling the interaction with handshaker service.
+   * That is, it points to grpc_call_start_batch_and_execute when the handshaker
+   * client is used in a non-testing use case and points to a custom function
+   * that validates the data to be sent to handshaker service in a testing use
+   * case. */
+  alts_grpc_caller grpc_caller;
+  /* A gRPC closure to be scheduled when the response from handshaker service
+   * is received. It will be initialized with the injected grpc RPC callback. */
+  grpc_closure on_handshaker_service_resp_recv;
+  /* Buffers containing information to be sent (or received) to (or from) the
+   * handshaker service. */
+  grpc_byte_buffer* send_buffer;
+  grpc_byte_buffer* recv_buffer;
+  grpc_status_code status;
+  /* Initial metadata to be received from handshaker service. */
+  grpc_metadata_array recv_initial_metadata;
+  /* A callback function provided by an application to be invoked when response
+   * is received from handshaker service. */
+  tsi_handshaker_on_next_done_cb cb;
+  void* user_data;
+  /* ALTS credential options passed in from the caller. */
+  grpc_alts_credentials_options* options;
+  /* target name information to be passed to handshaker service for server
+   * authorization check. */
+  grpc_slice target_name;
+  /* boolean flag indicating if the handshaker client is used at client
+   * (is_client = true) or server (is_client = false) side. */
+  bool is_client;
+  /* a temporary store for data received from handshaker service used to extract
+   * unused data. */
+  grpc_slice recv_bytes;
+  /* a buffer containing data to be sent to the grpc client or server's peer. */
+  unsigned char* buffer;
+  size_t buffer_size;
+  /** callback for receiving handshake call status */
+  grpc_closure on_status_received;
+  /** gRPC status code of handshake call */
+  grpc_status_code handshake_status_code;
+  /** gRPC status details of handshake call */
+  grpc_slice handshake_status_details;
+  /* mu synchronizes all fields below including their internal fields. */
+  gpr_mu mu;
+  /* indicates if the handshaker call's RECV_STATUS_ON_CLIENT op is done. */
+  bool receive_status_finished;
+  /* if non-null, contains arguments to complete a TSI next callback. */
+  recv_message_result* pending_recv_message_result;
+} alts_grpc_handshaker_client;
+
+static void handshaker_client_send_buffer_destroy(
+    alts_grpc_handshaker_client* client) {
+  GPR_ASSERT(client != nullptr);
+  grpc_byte_buffer_destroy(client->send_buffer);
+  client->send_buffer = nullptr;
+}
+
+static bool is_handshake_finished_properly(grpc_gcp_HandshakerResp* resp) {
+  GPR_ASSERT(resp != nullptr);
+  if (grpc_gcp_HandshakerResp_result(resp)) {
+    return true;
+  }
+  return false;
+}
+
+static void alts_grpc_handshaker_client_unref(
+    alts_grpc_handshaker_client* client) {
+  if (gpr_unref(&client->refs)) {
+    if (client->base.vtable != nullptr &&
+        client->base.vtable->destruct != nullptr) {
+      client->base.vtable->destruct(&client->base);
+    }
+    grpc_byte_buffer_destroy(client->send_buffer);
+    grpc_byte_buffer_destroy(client->recv_buffer);
+    client->send_buffer = nullptr;
+    client->recv_buffer = nullptr;
+    grpc_metadata_array_destroy(&client->recv_initial_metadata);
+    grpc_slice_unref_internal(client->recv_bytes);
+    grpc_slice_unref_internal(client->target_name);
+    grpc_alts_credentials_options_destroy(client->options);
+    gpr_free(client->buffer);
+    grpc_slice_unref_internal(client->handshake_status_details);
+    gpr_mu_destroy(&client->mu);
+    gpr_free(client);
+  }
+}
+
+static void maybe_complete_tsi_next(
+    alts_grpc_handshaker_client* client, bool receive_status_finished,
+    recv_message_result* pending_recv_message_result) {
+  recv_message_result* r;
+  {
+    grpc_core::MutexLock lock(&client->mu);
+    client->receive_status_finished |= receive_status_finished;
+    if (pending_recv_message_result != nullptr) {
+      GPR_ASSERT(client->pending_recv_message_result == nullptr);
+      client->pending_recv_message_result = pending_recv_message_result;
+    }
+    if (client->pending_recv_message_result == nullptr) {
+      return;
+    }
+    const bool have_final_result =
+        client->pending_recv_message_result->result != nullptr ||
+        client->pending_recv_message_result->status != TSI_OK;
+    if (have_final_result && !client->receive_status_finished) {
+      // If we've received the final message from the handshake
+      // server, or we're about to invoke the TSI next callback
+      // with a status other than TSI_OK (which terminates the
+      // handshake), then first wait for the RECV_STATUS op to complete.
+      return;
+    }
+    r = client->pending_recv_message_result;
+    client->pending_recv_message_result = nullptr;
+  }
+  client->cb(r->status, client->user_data, r->bytes_to_send,
+             r->bytes_to_send_size, r->result);
+  gpr_free(r);
+}
+
+static void handle_response_done(alts_grpc_handshaker_client* client,
+                                 tsi_result status,
+                                 const unsigned char* bytes_to_send,
+                                 size_t bytes_to_send_size,
+                                 tsi_handshaker_result* result) {
+  recv_message_result* p =
+      static_cast<recv_message_result*>(gpr_zalloc(sizeof(*p)));
+  p->status = status;
+  p->bytes_to_send = bytes_to_send;
+  p->bytes_to_send_size = bytes_to_send_size;
+  p->result = result;
+  maybe_complete_tsi_next(client, false /* receive_status_finished */,
+                          p /* pending_recv_message_result */);
+}
+
+void alts_handshaker_client_handle_response(alts_handshaker_client* c,
+                                            bool is_ok) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  grpc_byte_buffer* recv_buffer = client->recv_buffer;
+  grpc_status_code status = client->status;
+  alts_tsi_handshaker* handshaker = client->handshaker;
+  /* Invalid input check. */
+  if (client->cb == nullptr) {
+    gpr_log(GPR_ERROR,
+            "client->cb is nullptr in alts_tsi_handshaker_handle_response()");
+    return;
+  }
+  if (handshaker == nullptr) {
+    gpr_log(GPR_ERROR,
+            "handshaker is nullptr in alts_tsi_handshaker_handle_response()");
+    handle_response_done(client, TSI_INTERNAL_ERROR, nullptr, 0, nullptr);
+    return;
+  }
+  /* TSI handshake has been shutdown. */
+  if (alts_tsi_handshaker_has_shutdown(handshaker)) {
+    gpr_log(GPR_ERROR, "TSI handshake shutdown");
+    handle_response_done(client, TSI_HANDSHAKE_SHUTDOWN, nullptr, 0, nullptr);
+    return;
+  }
+  /* Failed grpc call check. */
+  if (!is_ok || status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "grpc call made to handshaker service failed");
+    handle_response_done(client, TSI_INTERNAL_ERROR, nullptr, 0, nullptr);
+    return;
+  }
+  if (recv_buffer == nullptr) {
+    gpr_log(GPR_ERROR,
+            "recv_buffer is nullptr in alts_tsi_handshaker_handle_response()");
+    handle_response_done(client, TSI_INTERNAL_ERROR, nullptr, 0, nullptr);
+    return;
+  }
+  upb::Arena arena;
+  grpc_gcp_HandshakerResp* resp =
+      alts_tsi_utils_deserialize_response(recv_buffer, arena.ptr());
+  grpc_byte_buffer_destroy(client->recv_buffer);
+  client->recv_buffer = nullptr;
+  /* Invalid handshaker response check. */
+  if (resp == nullptr) {
+    gpr_log(GPR_ERROR, "alts_tsi_utils_deserialize_response() failed");
+    handle_response_done(client, TSI_DATA_CORRUPTED, nullptr, 0, nullptr);
+    return;
+  }
+  const grpc_gcp_HandshakerStatus* resp_status =
+      grpc_gcp_HandshakerResp_status(resp);
+  if (resp_status == nullptr) {
+    gpr_log(GPR_ERROR, "No status in HandshakerResp");
+    handle_response_done(client, TSI_DATA_CORRUPTED, nullptr, 0, nullptr);
+    return;
+  }
+  upb_strview out_frames = grpc_gcp_HandshakerResp_out_frames(resp);
+  unsigned char* bytes_to_send = nullptr;
+  size_t bytes_to_send_size = 0;
+  if (out_frames.size > 0) {
+    bytes_to_send_size = out_frames.size;
+    while (bytes_to_send_size > client->buffer_size) {
+      client->buffer_size *= 2;
+      client->buffer = static_cast<unsigned char*>(
+          gpr_realloc(client->buffer, client->buffer_size));
+    }
+    memcpy(client->buffer, out_frames.data, bytes_to_send_size);
+    bytes_to_send = client->buffer;
+  }
+  tsi_handshaker_result* result = nullptr;
+  if (is_handshake_finished_properly(resp)) {
+    alts_tsi_handshaker_result_create(resp, client->is_client, &result);
+    alts_tsi_handshaker_result_set_unused_bytes(
+        result, &client->recv_bytes,
+        grpc_gcp_HandshakerResp_bytes_consumed(resp));
+  }
+  grpc_status_code code = static_cast<grpc_status_code>(
+      grpc_gcp_HandshakerStatus_code(resp_status));
+  if (code != GRPC_STATUS_OK) {
+    upb_strview details = grpc_gcp_HandshakerStatus_details(resp_status);
+    if (details.size > 0) {
+      char* error_details = (char*)gpr_zalloc(details.size + 1);
+      memcpy(error_details, details.data, details.size);
+      gpr_log(GPR_ERROR, "Error from handshaker service:%s", error_details);
+      gpr_free(error_details);
+    }
+  }
+  // TODO(apolcyn): consider short ciruiting handle_response_done and
+  // invoking the TSI callback directly if we aren't done yet, if
+  // handle_response_done's allocation per message received causes
+  // a performance issue.
+  handle_response_done(client, alts_tsi_utils_convert_to_tsi_result(code),
+                       bytes_to_send, bytes_to_send_size, result);
+}
+
+static tsi_result continue_make_grpc_call(alts_grpc_handshaker_client* client,
+                                          bool is_start) {
+  GPR_ASSERT(client != nullptr);
+  grpc_op ops[kHandshakerClientOpNum];
+  memset(ops, 0, sizeof(ops));
+  grpc_op* op = ops;
+  if (is_start) {
+    op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+    op->data.recv_status_on_client.trailing_metadata = nullptr;
+    op->data.recv_status_on_client.status = &client->handshake_status_code;
+    op->data.recv_status_on_client.status_details =
+        &client->handshake_status_details;
+    op->flags = 0;
+    op->reserved = nullptr;
+    op++;
+    GPR_ASSERT(op - ops <= kHandshakerClientOpNum);
+    gpr_ref(&client->refs);
+    grpc_call_error call_error =
+        client->grpc_caller(client->call, ops, static_cast<size_t>(op - ops),
+                            &client->on_status_received);
+    // TODO(apolcyn): return the error here instead, as done for other ops?
+    GPR_ASSERT(call_error == GRPC_CALL_OK);
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_INITIAL_METADATA;
+    op->data.send_initial_metadata.count = 0;
+    op++;
+    GPR_ASSERT(op - ops <= kHandshakerClientOpNum);
+    op->op = GRPC_OP_RECV_INITIAL_METADATA;
+    op->data.recv_initial_metadata.recv_initial_metadata =
+        &client->recv_initial_metadata;
+    op++;
+    GPR_ASSERT(op - ops <= kHandshakerClientOpNum);
+  }
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = client->send_buffer;
+  op++;
+  GPR_ASSERT(op - ops <= kHandshakerClientOpNum);
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &client->recv_buffer;
+  op++;
+  GPR_ASSERT(op - ops <= kHandshakerClientOpNum);
+  GPR_ASSERT(client->grpc_caller != nullptr);
+  if (client->grpc_caller(client->call, ops, static_cast<size_t>(op - ops),
+                          &client->on_handshaker_service_resp_recv) !=
+      GRPC_CALL_OK) {
+    gpr_log(GPR_ERROR, "Start batch operation failed");
+    return TSI_INTERNAL_ERROR;
+  }
+  return TSI_OK;
+}
+
+// TODO(apolcyn): remove this global queue when we can safely rely
+// on a MAX_CONCURRENT_STREAMS setting in the ALTS handshake server to
+// limit the number of concurrent handshakes.
+namespace {
+
+class HandshakeQueue {
+ public:
+  explicit HandshakeQueue(size_t max_outstanding_handshakes)
+      : max_outstanding_handshakes_(max_outstanding_handshakes) {}
+
+  void RequestHandshake(alts_grpc_handshaker_client* client) {
+    {
+      grpc_core::MutexLock lock(&mu_);
+      if (outstanding_handshakes_ == max_outstanding_handshakes_) {
+        // Max number already running, add to queue.
+        queued_handshakes_.push_back(client);
+        return;
+      }
+      // Start the handshake immediately.
+      ++outstanding_handshakes_;
+    }
+    continue_make_grpc_call(client, true /* is_start */);
+  }
+
+  void HandshakeDone() {
+    alts_grpc_handshaker_client* client = nullptr;
+    {
+      grpc_core::MutexLock lock(&mu_);
+      if (queued_handshakes_.empty()) {
+        // Nothing more in queue.  Decrement count and return immediately.
+        --outstanding_handshakes_;
+        return;
+      }
+      // Remove next entry from queue and start the handshake.
+      client = queued_handshakes_.front();
+      queued_handshakes_.pop_front();
+    }
+    continue_make_grpc_call(client, true /* is_start */);
+  }
+
+ private:
+  grpc_core::Mutex mu_;
+  std::list<alts_grpc_handshaker_client*> queued_handshakes_;
+  size_t outstanding_handshakes_ = 0;
+  const size_t max_outstanding_handshakes_;
+};
+
+gpr_once g_queued_handshakes_init = GPR_ONCE_INIT;
+/* Using separate queues for client and server handshakes is a
+ * hack that's mainly intended to satisfy the alts_concurrent_connectivity_test,
+ * which runs many concurrent handshakes where both endpoints
+ * are in the same process; this situation is problematic with a
+ * single queue because we have a high chance of using up all outstanding
+ * slots in the queue, such that there aren't any
+ * mutual client/server handshakes outstanding at the same time and
+ * able to make progress. */
+HandshakeQueue* g_client_handshake_queue;
+HandshakeQueue* g_server_handshake_queue;
+
+void DoHandshakeQueuesInit(void) {
+  const size_t per_queue_max_outstanding_handshakes = 40;
+  g_client_handshake_queue =
+      new HandshakeQueue(per_queue_max_outstanding_handshakes);
+  g_server_handshake_queue =
+      new HandshakeQueue(per_queue_max_outstanding_handshakes);
+}
+
+void RequestHandshake(alts_grpc_handshaker_client* client, bool is_client) {
+  gpr_once_init(&g_queued_handshakes_init, DoHandshakeQueuesInit);
+  HandshakeQueue* queue =
+      is_client ? g_client_handshake_queue : g_server_handshake_queue;
+  queue->RequestHandshake(client);
+}
+
+void HandshakeDone(bool is_client) {
+  HandshakeQueue* queue =
+      is_client ? g_client_handshake_queue : g_server_handshake_queue;
+  queue->HandshakeDone();
+}
+
+};  // namespace
+
+/**
+ * Populate grpc operation data with the fields of ALTS handshaker client and
+ * make a grpc call.
+ */
+static tsi_result make_grpc_call(alts_handshaker_client* c, bool is_start) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  if (is_start) {
+    RequestHandshake(client, client->is_client);
+    return TSI_OK;
+  } else {
+    return continue_make_grpc_call(client, is_start);
+  }
+}
+
+static void on_status_received(void* arg, grpc_error* error) {
+  alts_grpc_handshaker_client* client =
+      static_cast<alts_grpc_handshaker_client*>(arg);
+  if (client->handshake_status_code != GRPC_STATUS_OK) {
+    // TODO(apolcyn): consider overriding the handshake result's
+    // status from the final ALTS message with the status here.
+    char* status_details =
+        grpc_slice_to_c_string(client->handshake_status_details);
+    gpr_log(GPR_INFO,
+            "alts_grpc_handshaker_client:%p on_status_received "
+            "status:%d details:|%s| error:|%s|",
+            client, client->handshake_status_code, status_details,
+            grpc_error_string(error));
+    gpr_free(status_details);
+  }
+  maybe_complete_tsi_next(client, true /* receive_status_finished */,
+                          nullptr /* pending_recv_message_result */);
+  HandshakeDone(client->is_client);
+  alts_grpc_handshaker_client_unref(client);
+}
+
+/* Serializes a grpc_gcp_HandshakerReq message into a buffer and returns newly
+ * grpc_byte_buffer holding it. */
+static grpc_byte_buffer* get_serialized_handshaker_req(
+    grpc_gcp_HandshakerReq* req, upb_arena* arena) {
+  size_t buf_length;
+  char* buf = grpc_gcp_HandshakerReq_serialize(req, arena, &buf_length);
+  if (buf == nullptr) {
+    return nullptr;
+  }
+  grpc_slice slice = grpc_slice_from_copied_buffer(buf, buf_length);
+  grpc_byte_buffer* byte_buffer = grpc_raw_byte_buffer_create(&slice, 1);
+  grpc_slice_unref_internal(slice);
+  return byte_buffer;
+}
+
+/* Create and populate a client_start handshaker request, then serialize it. */
+static grpc_byte_buffer* get_serialized_start_client(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  upb::Arena arena;
+  grpc_gcp_HandshakerReq* req = grpc_gcp_HandshakerReq_new(arena.ptr());
+  grpc_gcp_StartClientHandshakeReq* start_client =
+      grpc_gcp_HandshakerReq_mutable_client_start(req, arena.ptr());
+  grpc_gcp_StartClientHandshakeReq_set_handshake_security_protocol(
+      start_client, grpc_gcp_ALTS);
+  grpc_gcp_StartClientHandshakeReq_add_application_protocols(
+      start_client, upb_strview_makez(ALTS_APPLICATION_PROTOCOL), arena.ptr());
+  grpc_gcp_StartClientHandshakeReq_add_record_protocols(
+      start_client, upb_strview_makez(ALTS_RECORD_PROTOCOL), arena.ptr());
+  grpc_gcp_RpcProtocolVersions* client_version =
+      grpc_gcp_StartClientHandshakeReq_mutable_rpc_versions(start_client,
+                                                            arena.ptr());
+  grpc_gcp_RpcProtocolVersions_assign_from_struct(
+      client_version, arena.ptr(), &client->options->rpc_versions);
+  grpc_gcp_StartClientHandshakeReq_set_target_name(
+      start_client,
+      upb_strview_make(reinterpret_cast<const char*>(
+                           GRPC_SLICE_START_PTR(client->target_name)),
+                       GRPC_SLICE_LENGTH(client->target_name)));
+  target_service_account* ptr =
+      (reinterpret_cast<grpc_alts_credentials_client_options*>(client->options))
+          ->target_account_list_head;
+  while (ptr != nullptr) {
+    grpc_gcp_Identity* target_identity =
+        grpc_gcp_StartClientHandshakeReq_add_target_identities(start_client,
+                                                               arena.ptr());
+    grpc_gcp_Identity_set_service_account(target_identity,
+                                          upb_strview_makez(ptr->data));
+    ptr = ptr->next;
+  }
+  return get_serialized_handshaker_req(req, arena.ptr());
+}
+
+static tsi_result handshaker_client_start_client(alts_handshaker_client* c) {
+  if (c == nullptr) {
+    gpr_log(GPR_ERROR, "client is nullptr in handshaker_client_start_client()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  grpc_byte_buffer* buffer = get_serialized_start_client(c);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  if (buffer == nullptr) {
+    gpr_log(GPR_ERROR, "get_serialized_start_client() failed");
+    return TSI_INTERNAL_ERROR;
+  }
+  handshaker_client_send_buffer_destroy(client);
+  client->send_buffer = buffer;
+  tsi_result result = make_grpc_call(&client->base, true /* is_start */);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "make_grpc_call() failed");
+  }
+  return result;
+}
+
+/* Create and populate a start_server handshaker request, then serialize it. */
+static grpc_byte_buffer* get_serialized_start_server(
+    alts_handshaker_client* c, grpc_slice* bytes_received) {
+  GPR_ASSERT(c != nullptr);
+  GPR_ASSERT(bytes_received != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+
+  upb::Arena arena;
+  grpc_gcp_HandshakerReq* req = grpc_gcp_HandshakerReq_new(arena.ptr());
+
+  grpc_gcp_StartServerHandshakeReq* start_server =
+      grpc_gcp_HandshakerReq_mutable_server_start(req, arena.ptr());
+  grpc_gcp_StartServerHandshakeReq_add_application_protocols(
+      start_server, upb_strview_makez(ALTS_APPLICATION_PROTOCOL), arena.ptr());
+  grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry* param =
+      grpc_gcp_StartServerHandshakeReq_add_handshake_parameters(start_server,
+                                                                arena.ptr());
+  grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_key(
+      param, grpc_gcp_ALTS);
+  grpc_gcp_ServerHandshakeParameters* value =
+      grpc_gcp_ServerHandshakeParameters_new(arena.ptr());
+  grpc_gcp_ServerHandshakeParameters_add_record_protocols(
+      value, upb_strview_makez(ALTS_RECORD_PROTOCOL), arena.ptr());
+  grpc_gcp_StartServerHandshakeReq_HandshakeParametersEntry_set_value(param,
+                                                                      value);
+  grpc_gcp_StartServerHandshakeReq_set_in_bytes(
+      start_server, upb_strview_make(reinterpret_cast<const char*>(
+                                         GRPC_SLICE_START_PTR(*bytes_received)),
+                                     GRPC_SLICE_LENGTH(*bytes_received)));
+  grpc_gcp_RpcProtocolVersions* server_version =
+      grpc_gcp_StartServerHandshakeReq_mutable_rpc_versions(start_server,
+                                                            arena.ptr());
+  grpc_gcp_RpcProtocolVersions_assign_from_struct(
+      server_version, arena.ptr(), &client->options->rpc_versions);
+  return get_serialized_handshaker_req(req, arena.ptr());
+}
+
+static tsi_result handshaker_client_start_server(alts_handshaker_client* c,
+                                                 grpc_slice* bytes_received) {
+  if (c == nullptr || bytes_received == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to handshaker_client_start_server()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  grpc_byte_buffer* buffer = get_serialized_start_server(c, bytes_received);
+  if (buffer == nullptr) {
+    gpr_log(GPR_ERROR, "get_serialized_start_server() failed");
+    return TSI_INTERNAL_ERROR;
+  }
+  handshaker_client_send_buffer_destroy(client);
+  client->send_buffer = buffer;
+  tsi_result result = make_grpc_call(&client->base, true /* is_start */);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "make_grpc_call() failed");
+  }
+  return result;
+}
+
+/* Create and populate a next handshaker request, then serialize it. */
+static grpc_byte_buffer* get_serialized_next(grpc_slice* bytes_received) {
+  GPR_ASSERT(bytes_received != nullptr);
+  upb::Arena arena;
+  grpc_gcp_HandshakerReq* req = grpc_gcp_HandshakerReq_new(arena.ptr());
+  grpc_gcp_NextHandshakeMessageReq* next =
+      grpc_gcp_HandshakerReq_mutable_next(req, arena.ptr());
+  grpc_gcp_NextHandshakeMessageReq_set_in_bytes(
+      next, upb_strview_make(reinterpret_cast<const char*> GRPC_SLICE_START_PTR(
+                                 *bytes_received),
+                             GRPC_SLICE_LENGTH(*bytes_received)));
+  return get_serialized_handshaker_req(req, arena.ptr());
+}
+
+static tsi_result handshaker_client_next(alts_handshaker_client* c,
+                                         grpc_slice* bytes_received) {
+  if (c == nullptr || bytes_received == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to handshaker_client_next()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  grpc_slice_unref_internal(client->recv_bytes);
+  client->recv_bytes = grpc_slice_ref_internal(*bytes_received);
+  grpc_byte_buffer* buffer = get_serialized_next(bytes_received);
+  if (buffer == nullptr) {
+    gpr_log(GPR_ERROR, "get_serialized_next() failed");
+    return TSI_INTERNAL_ERROR;
+  }
+  handshaker_client_send_buffer_destroy(client);
+  client->send_buffer = buffer;
+  tsi_result result = make_grpc_call(&client->base, false /* is_start */);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "make_grpc_call() failed");
+  }
+  return result;
+}
+
+static void handshaker_client_shutdown(alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  if (client->call != nullptr) {
+    grpc_call_cancel_internal(client->call);
+  }
+}
+
+static void handshaker_call_unref(void* arg, grpc_error* /* error */) {
+  grpc_call* call = static_cast<grpc_call*>(arg);
+  grpc_call_unref(call);
+}
+
+static void handshaker_client_destruct(alts_handshaker_client* c) {
+  if (c == nullptr) {
+    return;
+  }
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  if (client->call != nullptr) {
+    // Throw this grpc_call_unref over to the ExecCtx so that
+    // we invoke it at the bottom of the call stack and
+    // prevent lock inversion problems due to nested ExecCtx flushing.
+    // TODO(apolcyn): we could remove this indirection and call
+    // grpc_call_unref inline if there was an internal variant of
+    // grpc_call_unref that didn't need to flush an ExecCtx.
+    grpc_core::ExecCtx::Run(
+        DEBUG_LOCATION,
+        GRPC_CLOSURE_CREATE(handshaker_call_unref, client->call,
+                            grpc_schedule_on_exec_ctx),
+        GRPC_ERROR_NONE);
+  }
+}
+
+static const alts_handshaker_client_vtable vtable = {
+    handshaker_client_start_client, handshaker_client_start_server,
+    handshaker_client_next, handshaker_client_shutdown,
+    handshaker_client_destruct};
+
+alts_handshaker_client* alts_grpc_handshaker_client_create(
+    alts_tsi_handshaker* handshaker, grpc_channel* channel,
+    const char* handshaker_service_url, grpc_pollset_set* interested_parties,
+    grpc_alts_credentials_options* options, const grpc_slice& target_name,
+    grpc_iomgr_cb_func grpc_cb, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, alts_handshaker_client_vtable* vtable_for_testing,
+    bool is_client) {
+  if (channel == nullptr || handshaker_service_url == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to alts_handshaker_client_create()");
+    return nullptr;
+  }
+  alts_grpc_handshaker_client* client =
+      static_cast<alts_grpc_handshaker_client*>(gpr_zalloc(sizeof(*client)));
+  gpr_mu_init(&client->mu);
+  gpr_ref_init(&client->refs, 1);
+  client->grpc_caller = grpc_call_start_batch_and_execute;
+  client->handshaker = handshaker;
+  client->cb = cb;
+  client->user_data = user_data;
+  client->send_buffer = nullptr;
+  client->recv_buffer = nullptr;
+  client->options = grpc_alts_credentials_options_copy(options);
+  client->target_name = grpc_slice_copy(target_name);
+  client->recv_bytes = grpc_empty_slice();
+  grpc_metadata_array_init(&client->recv_initial_metadata);
+  client->is_client = is_client;
+  client->buffer_size = TSI_ALTS_INITIAL_BUFFER_SIZE;
+  client->buffer = static_cast<unsigned char*>(gpr_zalloc(client->buffer_size));
+  grpc_slice slice = grpc_slice_from_copied_string(handshaker_service_url);
+  client->call =
+      strcmp(handshaker_service_url, ALTS_HANDSHAKER_SERVICE_URL_FOR_TESTING) ==
+              0
+          ? nullptr
+          : grpc_channel_create_pollset_set_call(
+                channel, nullptr, GRPC_PROPAGATE_DEFAULTS, interested_parties,
+                grpc_slice_from_static_string(ALTS_SERVICE_METHOD), &slice,
+                GRPC_MILLIS_INF_FUTURE, nullptr);
+  client->base.vtable =
+      vtable_for_testing == nullptr ? &vtable : vtable_for_testing;
+  GRPC_CLOSURE_INIT(&client->on_handshaker_service_resp_recv, grpc_cb, client,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CLOSURE_INIT(&client->on_status_received, on_status_received, client,
+                    grpc_schedule_on_exec_ctx);
+  grpc_slice_unref_internal(slice);
+  return &client->base;
+}
+
+namespace grpc_core {
+namespace internal {
+
+void alts_handshaker_client_set_grpc_caller_for_testing(
+    alts_handshaker_client* c, alts_grpc_caller caller) {
+  GPR_ASSERT(c != nullptr && caller != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->grpc_caller = caller;
+}
+
+grpc_byte_buffer* alts_handshaker_client_get_send_buffer_for_testing(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  return client->send_buffer;
+}
+
+grpc_byte_buffer** alts_handshaker_client_get_recv_buffer_addr_for_testing(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  return &client->recv_buffer;
+}
+
+grpc_metadata_array* alts_handshaker_client_get_initial_metadata_for_testing(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  return &client->recv_initial_metadata;
+}
+
+void alts_handshaker_client_set_recv_bytes_for_testing(
+    alts_handshaker_client* c, grpc_slice* recv_bytes) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->recv_bytes = grpc_slice_ref_internal(*recv_bytes);
+}
+
+void alts_handshaker_client_set_fields_for_testing(
+    alts_handshaker_client* c, alts_tsi_handshaker* handshaker,
+    tsi_handshaker_on_next_done_cb cb, void* user_data,
+    grpc_byte_buffer* recv_buffer, grpc_status_code status) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->handshaker = handshaker;
+  client->cb = cb;
+  client->user_data = user_data;
+  client->recv_buffer = recv_buffer;
+  client->status = status;
+}
+
+void alts_handshaker_client_check_fields_for_testing(
+    alts_handshaker_client* c, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, bool has_sent_start_message, grpc_slice* recv_bytes) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  GPR_ASSERT(client->cb == cb);
+  GPR_ASSERT(client->user_data == user_data);
+  if (recv_bytes != nullptr) {
+    GPR_ASSERT(grpc_slice_cmp(client->recv_bytes, *recv_bytes) == 0);
+  }
+  GPR_ASSERT(alts_tsi_handshaker_get_has_sent_start_message_for_testing(
+                 client->handshaker) == has_sent_start_message);
+}
+
+void alts_handshaker_client_set_vtable_for_testing(
+    alts_handshaker_client* c, alts_handshaker_client_vtable* vtable) {
+  GPR_ASSERT(c != nullptr);
+  GPR_ASSERT(vtable != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->base.vtable = vtable;
+}
+
+alts_tsi_handshaker* alts_handshaker_client_get_handshaker_for_testing(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  return client->handshaker;
+}
+
+void alts_handshaker_client_set_cb_for_testing(
+    alts_handshaker_client* c, tsi_handshaker_on_next_done_cb cb) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->cb = cb;
+}
+
+grpc_closure* alts_handshaker_client_get_closure_for_testing(
+    alts_handshaker_client* c) {
+  GPR_ASSERT(c != nullptr);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  return &client->on_handshaker_service_resp_recv;
+}
+
+void alts_handshaker_client_ref_for_testing(alts_handshaker_client* c) {
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  gpr_ref(&client->refs);
+}
+
+void alts_handshaker_client_on_status_received_for_testing(
+    alts_handshaker_client* c, grpc_status_code status, grpc_error* error) {
+  // We first make sure that the handshake queue has been initialized
+  // here because there are tests that use this API that mock out
+  // other parts of the alts_handshaker_client in such a way that the
+  // code path that would normally ensure that the handshake queue
+  // has been initialized isn't taken.
+  gpr_once_init(&g_queued_handshakes_init, DoHandshakeQueuesInit);
+  alts_grpc_handshaker_client* client =
+      reinterpret_cast<alts_grpc_handshaker_client*>(c);
+  client->handshake_status_code = status;
+  client->handshake_status_details = grpc_empty_slice();
+  grpc_core::Closure::Run(DEBUG_LOCATION, &client->on_status_received, error);
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+tsi_result alts_handshaker_client_start_client(alts_handshaker_client* client) {
+  if (client != nullptr && client->vtable != nullptr &&
+      client->vtable->client_start != nullptr) {
+    return client->vtable->client_start(client);
+  }
+  gpr_log(GPR_ERROR,
+          "client or client->vtable has not been initialized properly");
+  return TSI_INVALID_ARGUMENT;
+}
+
+tsi_result alts_handshaker_client_start_server(alts_handshaker_client* client,
+                                               grpc_slice* bytes_received) {
+  if (client != nullptr && client->vtable != nullptr &&
+      client->vtable->server_start != nullptr) {
+    return client->vtable->server_start(client, bytes_received);
+  }
+  gpr_log(GPR_ERROR,
+          "client or client->vtable has not been initialized properly");
+  return TSI_INVALID_ARGUMENT;
+}
+
+tsi_result alts_handshaker_client_next(alts_handshaker_client* client,
+                                       grpc_slice* bytes_received) {
+  if (client != nullptr && client->vtable != nullptr &&
+      client->vtable->next != nullptr) {
+    return client->vtable->next(client, bytes_received);
+  }
+  gpr_log(GPR_ERROR,
+          "client or client->vtable has not been initialized properly");
+  return TSI_INVALID_ARGUMENT;
+}
+
+void alts_handshaker_client_shutdown(alts_handshaker_client* client) {
+  if (client != nullptr && client->vtable != nullptr &&
+      client->vtable->shutdown != nullptr) {
+    client->vtable->shutdown(client);
+  }
+}
+
+void alts_handshaker_client_destroy(alts_handshaker_client* c) {
+  if (c != nullptr) {
+    alts_grpc_handshaker_client* client =
+        reinterpret_cast<alts_grpc_handshaker_client*>(c);
+    alts_grpc_handshaker_client_unref(client);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.h
new file mode 100644
index 0000000..319a23c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_handshaker_client.h	
@@ -0,0 +1,157 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/alts/handshaker/alts_tsi_handshaker.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+#define ALTS_SERVICE_METHOD "/grpc.gcp.HandshakerService/DoHandshake"
+#define ALTS_APPLICATION_PROTOCOL "grpc"
+#define ALTS_RECORD_PROTOCOL "ALTSRP_GCM_AES128_REKEY"
+#define ALTS_HANDSHAKER_SERVICE_URL_FOR_TESTING "lame"
+
+const size_t kAltsAes128GcmRekeyKeyLength = 44;
+
+typedef struct alts_tsi_handshaker alts_tsi_handshaker;
+/**
+ * A ALTS handshaker client interface. It is used to communicate with
+ * ALTS handshaker service by scheduling a handshaker request that could be one
+ * of client_start, server_start, and next handshaker requests. All APIs in the
+ * header are thread-compatible.
+ */
+typedef struct alts_handshaker_client alts_handshaker_client;
+
+/* A function that makes the grpc call to the handshaker service. */
+typedef grpc_call_error (*alts_grpc_caller)(grpc_call* call, const grpc_op* ops,
+                                            size_t nops, grpc_closure* tag);
+
+/* V-table for ALTS handshaker client operations. */
+typedef struct alts_handshaker_client_vtable {
+  tsi_result (*client_start)(alts_handshaker_client* client);
+  tsi_result (*server_start)(alts_handshaker_client* client,
+                             grpc_slice* bytes_received);
+  tsi_result (*next)(alts_handshaker_client* client,
+                     grpc_slice* bytes_received);
+  void (*shutdown)(alts_handshaker_client* client);
+  void (*destruct)(alts_handshaker_client* client);
+} alts_handshaker_client_vtable;
+
+/**
+ * This method schedules a client_start handshaker request to ALTS handshaker
+ * service.
+ *
+ * - client: ALTS handshaker client instance.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_start_client(alts_handshaker_client* client);
+
+/**
+ * This method schedules a server_start handshaker request to ALTS handshaker
+ * service.
+ *
+ * - client: ALTS handshaker client instance.
+ * - bytes_received: bytes in out_frames returned from the peer's handshaker
+ *   response.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_start_server(alts_handshaker_client* client,
+                                               grpc_slice* bytes_received);
+
+/**
+ * This method schedules a next handshaker request to ALTS handshaker service.
+ *
+ * - client: ALTS handshaker client instance.
+ * - bytes_received: bytes in out_frames returned from the peer's handshaker
+ *   response.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result alts_handshaker_client_next(alts_handshaker_client* client,
+                                       grpc_slice* bytes_received);
+
+/**
+ * This method cancels previously scheduled, but yet executed handshaker
+ * requests to ALTS handshaker service. After this operation, the handshake
+ * will be shutdown, and no more handshaker requests will get scheduled.
+ *
+ * - client: ALTS handshaker client instance.
+ */
+void alts_handshaker_client_shutdown(alts_handshaker_client* client);
+
+/**
+ * This method destroys an ALTS handshaker client.
+ *
+ * - client: an ALTS handshaker client instance.
+ */
+void alts_handshaker_client_destroy(alts_handshaker_client* client);
+
+/**
+ * This method creates an ALTS handshaker client.
+ *
+ * - handshaker: ALTS TSI handshaker to which the created handshaker client
+ * belongs to.
+ * - channel: grpc channel to ALTS handshaker service.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port".
+ * - interested_parties: set of pollsets interested in this connection.
+ * - options: ALTS credentials options containing information passed from TSI
+ *   caller (e.g., rpc protocol versions)
+ * - target_name: the name of the endpoint that the channel is connecting to,
+ *   and will be used for secure naming check
+ * - grpc_cb: gRPC provided callbacks passed from TSI handshaker.
+ * - cb: callback to be executed when tsi_handshaker_next API compltes.
+ * - user_data: argument passed to cb.
+ * - vtable_for_testing: ALTS handshaker client vtable instance used for
+ *   testing purpose.
+ * - is_client: a boolean value indicating if the created handshaker client is
+ * used at the client (is_client = true) or server (is_client = false) side. It
+ * returns the created ALTS handshaker client on success, and NULL on failure.
+ */
+alts_handshaker_client* alts_grpc_handshaker_client_create(
+    alts_tsi_handshaker* handshaker, grpc_channel* channel,
+    const char* handshaker_service_url, grpc_pollset_set* interested_parties,
+    grpc_alts_credentials_options* options, const grpc_slice& target_name,
+    grpc_iomgr_cb_func grpc_cb, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, alts_handshaker_client_vtable* vtable_for_testing,
+    bool is_client);
+
+/**
+ * This method handles handshaker response returned from ALTS handshaker
+ * service. Note that the only reason the API is exposed is that it is used in
+ * alts_shared_resources.cc.
+ *
+ * - client: an ALTS handshaker client instance.
+ * - is_ok: a boolean value indicating if the handshaker response is ok to read.
+ */
+void alts_handshaker_client_handle_response(alts_handshaker_client* client,
+                                            bool is_ok);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_HANDSHAKER_CLIENT_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.cc
new file mode 100644
index 0000000..255eda5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.cc	
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/alts_shared_resource.h"
+
+#include <grpc/support/log.h>
+
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+
+static alts_shared_resource_dedicated g_alts_resource_dedicated;
+
+alts_shared_resource_dedicated* grpc_alts_get_shared_resource_dedicated(void) {
+  return &g_alts_resource_dedicated;
+}
+
+static void thread_worker(void* /*arg*/) {
+  while (true) {
+    grpc_event event =
+        grpc_completion_queue_next(g_alts_resource_dedicated.cq,
+                                   gpr_inf_future(GPR_CLOCK_REALTIME), nullptr);
+    GPR_ASSERT(event.type != GRPC_QUEUE_TIMEOUT);
+    if (event.type == GRPC_QUEUE_SHUTDOWN) {
+      break;
+    }
+    GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
+    alts_handshaker_client* client =
+        static_cast<alts_handshaker_client*>(event.tag);
+    alts_handshaker_client_handle_response(client, event.success);
+  }
+}
+
+void grpc_alts_shared_resource_dedicated_init() {
+  g_alts_resource_dedicated.cq = nullptr;
+  gpr_mu_init(&g_alts_resource_dedicated.mu);
+}
+
+void grpc_alts_shared_resource_dedicated_start(
+    const char* handshaker_service_url) {
+  gpr_mu_lock(&g_alts_resource_dedicated.mu);
+  if (g_alts_resource_dedicated.cq == nullptr) {
+    g_alts_resource_dedicated.channel =
+        grpc_insecure_channel_create(handshaker_service_url, nullptr, nullptr);
+    g_alts_resource_dedicated.cq =
+        grpc_completion_queue_create_for_next(nullptr);
+    g_alts_resource_dedicated.thread =
+        grpc_core::Thread("alts_tsi_handshaker", &thread_worker, nullptr);
+    g_alts_resource_dedicated.interested_parties = grpc_pollset_set_create();
+    grpc_pollset_set_add_pollset(g_alts_resource_dedicated.interested_parties,
+                                 grpc_cq_pollset(g_alts_resource_dedicated.cq));
+    g_alts_resource_dedicated.thread.Start();
+  }
+  gpr_mu_unlock(&g_alts_resource_dedicated.mu);
+}
+
+void grpc_alts_shared_resource_dedicated_shutdown() {
+  if (g_alts_resource_dedicated.cq != nullptr) {
+    grpc_pollset_set_del_pollset(g_alts_resource_dedicated.interested_parties,
+                                 grpc_cq_pollset(g_alts_resource_dedicated.cq));
+    grpc_completion_queue_shutdown(g_alts_resource_dedicated.cq);
+    g_alts_resource_dedicated.thread.Join();
+    grpc_pollset_set_destroy(g_alts_resource_dedicated.interested_parties);
+    grpc_completion_queue_destroy(g_alts_resource_dedicated.cq);
+    grpc_channel_destroy(g_alts_resource_dedicated.channel);
+  }
+  gpr_mu_destroy(&g_alts_resource_dedicated.mu);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.h
new file mode 100644
index 0000000..d8638e7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_shared_resource.h	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/sync.h>
+
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+/**
+ * Main struct containing ALTS shared resources used when
+ * employing the dedicated completion queue and thread.
+ */
+typedef struct alts_shared_resource_dedicated {
+  grpc_core::Thread thread;
+  grpc_completion_queue* cq;
+  grpc_pollset_set* interested_parties;
+  grpc_cq_completion storage;
+  gpr_mu mu;
+  grpc_channel* channel;
+} alts_shared_resource_dedicated;
+
+/* This method returns the address of alts_shared_resource_dedicated
+ * object shared by all TSI handshakes.
+ */
+alts_shared_resource_dedicated* grpc_alts_get_shared_resource_dedicated(void);
+
+/**
+ * This method destroys the alts_shared_resource_dedicated object
+ * shared by all TSI handshakes. The application is responsible for
+ * invoking the API before calling grpc_shutdown().
+ */
+void grpc_alts_shared_resource_dedicated_shutdown();
+
+/**
+ * This method initializes the alts_shared_resource_dedicated object
+ * shared by all TSI handshakes. The application is responsible for
+ * invoking the API after calling grpc_init();
+ */
+void grpc_alts_shared_resource_dedicated_init();
+
+/**
+ * This method populates various fields of the alts_shared_resource_dedicated
+ * object shared by all TSI handshakes and start the dedicated thread.
+ * The API will be invoked by the caller in a lazy manner. That is,
+ * it will get invoked when ALTS TSI handshake occurs for the first time.
+ */
+void grpc_alts_shared_resource_dedicated_start(
+    const char* handshaker_service_url);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_SHARED_RESOURCE_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc
new file mode 100644
index 0000000..0c70030
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc	
@@ -0,0 +1,644 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/alts_tsi_handshaker.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd_id.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/gprpp/thd.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/tsi/alts/frame_protector/alts_frame_protector.h"
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+#include "src/core/tsi/alts/handshaker/alts_shared_resource.h"
+#include "src/core/tsi/alts/handshaker/alts_tsi_utils.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h"
+
+/* Main struct for ALTS TSI handshaker. */
+struct alts_tsi_handshaker {
+  tsi_handshaker base;
+  grpc_slice target_name;
+  bool is_client;
+  bool has_sent_start_message;
+  bool has_created_handshaker_client;
+  char* handshaker_service_url;
+  grpc_pollset_set* interested_parties;
+  grpc_alts_credentials_options* options;
+  alts_handshaker_client_vtable* client_vtable_for_testing;
+  grpc_channel* channel;
+  bool use_dedicated_cq;
+  // mu synchronizes all fields below. Note these are the
+  // only fields that can be concurrently accessed (due to
+  // potential concurrency of tsi_handshaker_shutdown and
+  // tsi_handshaker_next).
+  gpr_mu mu;
+  alts_handshaker_client* client;
+  // shutdown effectively follows base.handshake_shutdown,
+  // but is synchronized by the mutex of this object.
+  bool shutdown;
+};
+
+/* Main struct for ALTS TSI handshaker result. */
+typedef struct alts_tsi_handshaker_result {
+  tsi_handshaker_result base;
+  char* peer_identity;
+  char* key_data;
+  unsigned char* unused_bytes;
+  size_t unused_bytes_size;
+  grpc_slice rpc_versions;
+  bool is_client;
+  grpc_slice serialized_context;
+} alts_tsi_handshaker_result;
+
+static tsi_result handshaker_result_extract_peer(
+    const tsi_handshaker_result* self, tsi_peer* peer) {
+  if (self == nullptr || peer == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid argument to handshaker_result_extract_peer()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  GPR_ASSERT(kTsiAltsNumOfPeerProperties == 5);
+  tsi_result ok = tsi_construct_peer(kTsiAltsNumOfPeerProperties, peer);
+  int index = 0;
+  if (ok != TSI_OK) {
+    gpr_log(GPR_ERROR, "Failed to construct tsi peer");
+    return ok;
+  }
+  GPR_ASSERT(&peer->properties[index] != nullptr);
+  ok = tsi_construct_string_peer_property_from_cstring(
+      TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_ALTS_CERTIFICATE_TYPE,
+      &peer->properties[index]);
+  if (ok != TSI_OK) {
+    tsi_peer_destruct(peer);
+    gpr_log(GPR_ERROR, "Failed to set tsi peer property");
+    return ok;
+  }
+  index++;
+  GPR_ASSERT(&peer->properties[index] != nullptr);
+  ok = tsi_construct_string_peer_property_from_cstring(
+      TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY, result->peer_identity,
+      &peer->properties[index]);
+  if (ok != TSI_OK) {
+    tsi_peer_destruct(peer);
+    gpr_log(GPR_ERROR, "Failed to set tsi peer property");
+  }
+  index++;
+  GPR_ASSERT(&peer->properties[index] != nullptr);
+  ok = tsi_construct_string_peer_property(
+      TSI_ALTS_RPC_VERSIONS,
+      reinterpret_cast<char*>(GRPC_SLICE_START_PTR(result->rpc_versions)),
+      GRPC_SLICE_LENGTH(result->rpc_versions), &peer->properties[index]);
+  if (ok != TSI_OK) {
+    tsi_peer_destruct(peer);
+    gpr_log(GPR_ERROR, "Failed to set tsi peer property");
+  }
+  index++;
+  GPR_ASSERT(&peer->properties[index] != nullptr);
+  ok = tsi_construct_string_peer_property(
+      TSI_ALTS_CONTEXT,
+      reinterpret_cast<char*>(GRPC_SLICE_START_PTR(result->serialized_context)),
+      GRPC_SLICE_LENGTH(result->serialized_context), &peer->properties[index]);
+  if (ok != TSI_OK) {
+    tsi_peer_destruct(peer);
+    gpr_log(GPR_ERROR, "Failed to set tsi peer property");
+  }
+  index++;
+  GPR_ASSERT(&peer->properties[index] != nullptr);
+  ok = tsi_construct_string_peer_property_from_cstring(
+      TSI_SECURITY_LEVEL_PEER_PROPERTY,
+      tsi_security_level_to_string(TSI_PRIVACY_AND_INTEGRITY),
+      &peer->properties[index]);
+  if (ok != TSI_OK) {
+    tsi_peer_destruct(peer);
+    gpr_log(GPR_ERROR, "Failed to set tsi peer property");
+  }
+  GPR_ASSERT(++index == kTsiAltsNumOfPeerProperties);
+  return ok;
+}
+
+static tsi_result handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector) {
+  if (self == nullptr || protector == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to create_zero_copy_grpc_protector()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  tsi_result ok = alts_zero_copy_grpc_protector_create(
+      reinterpret_cast<const uint8_t*>(result->key_data),
+      kAltsAes128GcmRekeyKeyLength, /*is_rekey=*/true, result->is_client,
+      /*is_integrity_only=*/false, /*enable_extra_copy=*/false,
+      max_output_protected_frame_size, protector);
+  if (ok != TSI_OK) {
+    gpr_log(GPR_ERROR, "Failed to create zero-copy grpc protector");
+  }
+  return ok;
+}
+
+static tsi_result handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector) {
+  if (self == nullptr || protector == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to handshaker_result_create_frame_protector()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  tsi_result ok = alts_create_frame_protector(
+      reinterpret_cast<const uint8_t*>(result->key_data),
+      kAltsAes128GcmRekeyKeyLength, result->is_client, /*is_rekey=*/true,
+      max_output_protected_frame_size, protector);
+  if (ok != TSI_OK) {
+    gpr_log(GPR_ERROR, "Failed to create frame protector");
+  }
+  return ok;
+}
+
+static tsi_result handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* bytes_size) {
+  if (self == nullptr || bytes == nullptr || bytes_size == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to handshaker_result_get_unused_bytes()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  *bytes = result->unused_bytes;
+  *bytes_size = result->unused_bytes_size;
+  return TSI_OK;
+}
+
+static void handshaker_result_destroy(tsi_handshaker_result* self) {
+  if (self == nullptr) {
+    return;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  gpr_free(result->peer_identity);
+  gpr_free(result->key_data);
+  gpr_free(result->unused_bytes);
+  grpc_slice_unref_internal(result->rpc_versions);
+  grpc_slice_unref_internal(result->serialized_context);
+  gpr_free(result);
+}
+
+static const tsi_handshaker_result_vtable result_vtable = {
+    handshaker_result_extract_peer,
+    handshaker_result_create_zero_copy_grpc_protector,
+    handshaker_result_create_frame_protector,
+    handshaker_result_get_unused_bytes, handshaker_result_destroy};
+
+tsi_result alts_tsi_handshaker_result_create(grpc_gcp_HandshakerResp* resp,
+                                             bool is_client,
+                                             tsi_handshaker_result** self) {
+  if (self == nullptr || resp == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to create_handshaker_result()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  const grpc_gcp_HandshakerResult* hresult =
+      grpc_gcp_HandshakerResp_result(resp);
+  const grpc_gcp_Identity* identity =
+      grpc_gcp_HandshakerResult_peer_identity(hresult);
+  if (identity == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid identity");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb_strview peer_service_account =
+      grpc_gcp_Identity_service_account(identity);
+  if (peer_service_account.size == 0) {
+    gpr_log(GPR_ERROR, "Invalid peer service account");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb_strview key_data = grpc_gcp_HandshakerResult_key_data(hresult);
+  if (key_data.size < kAltsAes128GcmRekeyKeyLength) {
+    gpr_log(GPR_ERROR, "Bad key length");
+    return TSI_FAILED_PRECONDITION;
+  }
+  const grpc_gcp_RpcProtocolVersions* peer_rpc_version =
+      grpc_gcp_HandshakerResult_peer_rpc_versions(hresult);
+  if (peer_rpc_version == nullptr) {
+    gpr_log(GPR_ERROR, "Peer does not set RPC protocol versions.");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb_strview application_protocol =
+      grpc_gcp_HandshakerResult_application_protocol(hresult);
+  if (application_protocol.size == 0) {
+    gpr_log(GPR_ERROR, "Invalid application protocol");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb_strview record_protocol =
+      grpc_gcp_HandshakerResult_record_protocol(hresult);
+  if (record_protocol.size == 0) {
+    gpr_log(GPR_ERROR, "Invalid record protocol");
+    return TSI_FAILED_PRECONDITION;
+  }
+  const grpc_gcp_Identity* local_identity =
+      grpc_gcp_HandshakerResult_local_identity(hresult);
+  if (local_identity == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid local identity");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb_strview local_service_account =
+      grpc_gcp_Identity_service_account(local_identity);
+  // We don't check if local service account is empty here
+  // because local identity could be empty in certain situations.
+  alts_tsi_handshaker_result* result =
+      static_cast<alts_tsi_handshaker_result*>(gpr_zalloc(sizeof(*result)));
+  result->key_data =
+      static_cast<char*>(gpr_zalloc(kAltsAes128GcmRekeyKeyLength));
+  memcpy(result->key_data, key_data.data, kAltsAes128GcmRekeyKeyLength);
+  result->peer_identity =
+      static_cast<char*>(gpr_zalloc(peer_service_account.size + 1));
+  memcpy(result->peer_identity, peer_service_account.data,
+         peer_service_account.size);
+  upb::Arena rpc_versions_arena;
+  bool serialized = grpc_gcp_rpc_protocol_versions_encode(
+      peer_rpc_version, rpc_versions_arena.ptr(), &result->rpc_versions);
+  if (!serialized) {
+    gpr_log(GPR_ERROR, "Failed to serialize peer's RPC protocol versions.");
+    return TSI_FAILED_PRECONDITION;
+  }
+  upb::Arena context_arena;
+  grpc_gcp_AltsContext* context = grpc_gcp_AltsContext_new(context_arena.ptr());
+  grpc_gcp_AltsContext_set_application_protocol(context, application_protocol);
+  grpc_gcp_AltsContext_set_record_protocol(context, record_protocol);
+  // ALTS currently only supports the security level of 2,
+  // which is "grpc_gcp_INTEGRITY_AND_PRIVACY".
+  grpc_gcp_AltsContext_set_security_level(context, 2);
+  grpc_gcp_AltsContext_set_peer_service_account(context, peer_service_account);
+  grpc_gcp_AltsContext_set_local_service_account(context,
+                                                 local_service_account);
+  grpc_gcp_AltsContext_set_peer_rpc_versions(
+      context, const_cast<grpc_gcp_RpcProtocolVersions*>(peer_rpc_version));
+  size_t serialized_ctx_length;
+  char* serialized_ctx = grpc_gcp_AltsContext_serialize(
+      context, context_arena.ptr(), &serialized_ctx_length);
+  if (serialized_ctx == nullptr) {
+    gpr_log(GPR_ERROR, "Failed to serialize peer's ALTS context.");
+    return TSI_FAILED_PRECONDITION;
+  }
+  result->serialized_context =
+      grpc_slice_from_copied_buffer(serialized_ctx, serialized_ctx_length);
+  result->is_client = is_client;
+  result->base.vtable = &result_vtable;
+  *self = &result->base;
+  return TSI_OK;
+}
+
+/* gRPC provided callback used when gRPC thread model is applied. */
+static void on_handshaker_service_resp_recv(void* arg, grpc_error* error) {
+  alts_handshaker_client* client = static_cast<alts_handshaker_client*>(arg);
+  if (client == nullptr) {
+    gpr_log(GPR_ERROR, "ALTS handshaker client is nullptr");
+    return;
+  }
+  bool success = true;
+  if (error != GRPC_ERROR_NONE) {
+    gpr_log(GPR_ERROR,
+            "ALTS handshaker on_handshaker_service_resp_recv error: %s",
+            grpc_error_string(error));
+    success = false;
+  }
+  alts_handshaker_client_handle_response(client, success);
+}
+
+/* gRPC provided callback used when dedicatd CQ and thread are used.
+ * It serves to safely bring the control back to application. */
+static void on_handshaker_service_resp_recv_dedicated(void* arg,
+                                                      grpc_error* /*error*/) {
+  alts_shared_resource_dedicated* resource =
+      grpc_alts_get_shared_resource_dedicated();
+  grpc_cq_end_op(resource->cq, arg, GRPC_ERROR_NONE,
+                 [](void* /*done_arg*/, grpc_cq_completion* /*storage*/) {},
+                 nullptr, &resource->storage);
+}
+
+/* Returns TSI_OK if and only if no error is encountered. */
+static tsi_result alts_tsi_handshaker_continue_handshaker_next(
+    alts_tsi_handshaker* handshaker, const unsigned char* received_bytes,
+    size_t received_bytes_size, tsi_handshaker_on_next_done_cb cb,
+    void* user_data) {
+  if (!handshaker->has_created_handshaker_client) {
+    if (handshaker->channel == nullptr) {
+      grpc_alts_shared_resource_dedicated_start(
+          handshaker->handshaker_service_url);
+      handshaker->interested_parties =
+          grpc_alts_get_shared_resource_dedicated()->interested_parties;
+      GPR_ASSERT(handshaker->interested_parties != nullptr);
+    }
+    grpc_iomgr_cb_func grpc_cb = handshaker->channel == nullptr
+                                     ? on_handshaker_service_resp_recv_dedicated
+                                     : on_handshaker_service_resp_recv;
+    grpc_channel* channel =
+        handshaker->channel == nullptr
+            ? grpc_alts_get_shared_resource_dedicated()->channel
+            : handshaker->channel;
+    alts_handshaker_client* client = alts_grpc_handshaker_client_create(
+        handshaker, channel, handshaker->handshaker_service_url,
+        handshaker->interested_parties, handshaker->options,
+        handshaker->target_name, grpc_cb, cb, user_data,
+        handshaker->client_vtable_for_testing, handshaker->is_client);
+    if (client == nullptr) {
+      gpr_log(GPR_ERROR, "Failed to create ALTS handshaker client");
+      return TSI_FAILED_PRECONDITION;
+    }
+    {
+      grpc_core::MutexLock lock(&handshaker->mu);
+      GPR_ASSERT(handshaker->client == nullptr);
+      handshaker->client = client;
+      if (handshaker->shutdown) {
+        gpr_log(GPR_ERROR, "TSI handshake shutdown");
+        return TSI_HANDSHAKE_SHUTDOWN;
+      }
+    }
+    handshaker->has_created_handshaker_client = true;
+  }
+  if (handshaker->channel == nullptr &&
+      handshaker->client_vtable_for_testing == nullptr) {
+    GPR_ASSERT(grpc_cq_begin_op(grpc_alts_get_shared_resource_dedicated()->cq,
+                                handshaker->client));
+  }
+  grpc_slice slice = (received_bytes == nullptr || received_bytes_size == 0)
+                         ? grpc_empty_slice()
+                         : grpc_slice_from_copied_buffer(
+                               reinterpret_cast<const char*>(received_bytes),
+                               received_bytes_size);
+  tsi_result ok = TSI_OK;
+  if (!handshaker->has_sent_start_message) {
+    handshaker->has_sent_start_message = true;
+    ok = handshaker->is_client
+             ? alts_handshaker_client_start_client(handshaker->client)
+             : alts_handshaker_client_start_server(handshaker->client, &slice);
+    // It's unsafe for the current thread to access any state in handshaker
+    // at this point, since alts_handshaker_client_start_client/server
+    // have potentially just started an op batch on the handshake call.
+    // The completion callback for that batch is unsynchronized and so
+    // can invoke the TSI next API callback from any thread, at which point
+    // there is nothing taking ownership of this handshaker to prevent it
+    // from being destroyed.
+  } else {
+    ok = alts_handshaker_client_next(handshaker->client, &slice);
+  }
+  grpc_slice_unref_internal(slice);
+  return ok;
+}
+
+struct alts_tsi_handshaker_continue_handshaker_next_args {
+  alts_tsi_handshaker* handshaker;
+  std::unique_ptr<unsigned char> received_bytes;
+  size_t received_bytes_size;
+  tsi_handshaker_on_next_done_cb cb;
+  void* user_data;
+  grpc_closure closure;
+};
+
+static void alts_tsi_handshaker_create_channel(void* arg,
+                                               grpc_error* /* unused_error */) {
+  alts_tsi_handshaker_continue_handshaker_next_args* next_args =
+      static_cast<alts_tsi_handshaker_continue_handshaker_next_args*>(arg);
+  alts_tsi_handshaker* handshaker = next_args->handshaker;
+  GPR_ASSERT(handshaker->channel == nullptr);
+  handshaker->channel = grpc_insecure_channel_create(
+      next_args->handshaker->handshaker_service_url, nullptr, nullptr);
+  tsi_result continue_next_result =
+      alts_tsi_handshaker_continue_handshaker_next(
+          handshaker, next_args->received_bytes.get(),
+          next_args->received_bytes_size, next_args->cb, next_args->user_data);
+  if (continue_next_result != TSI_OK) {
+    next_args->cb(continue_next_result, next_args->user_data, nullptr, 0,
+                  nullptr);
+  }
+  delete next_args;
+}
+
+static tsi_result handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** /*bytes_to_send*/,
+    size_t* /*bytes_to_send_size*/, tsi_handshaker_result** /*result*/,
+    tsi_handshaker_on_next_done_cb cb, void* user_data) {
+  if (self == nullptr || cb == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to handshaker_next()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker* handshaker =
+      reinterpret_cast<alts_tsi_handshaker*>(self);
+  {
+    grpc_core::MutexLock lock(&handshaker->mu);
+    if (handshaker->shutdown) {
+      gpr_log(GPR_ERROR, "TSI handshake shutdown");
+      return TSI_HANDSHAKE_SHUTDOWN;
+    }
+  }
+  if (handshaker->channel == nullptr && !handshaker->use_dedicated_cq) {
+    alts_tsi_handshaker_continue_handshaker_next_args* args =
+        new alts_tsi_handshaker_continue_handshaker_next_args();
+    args->handshaker = handshaker;
+    args->received_bytes = nullptr;
+    args->received_bytes_size = received_bytes_size;
+    if (received_bytes_size > 0) {
+      args->received_bytes = std::unique_ptr<unsigned char>(
+          static_cast<unsigned char*>(gpr_zalloc(received_bytes_size)));
+      memcpy(args->received_bytes.get(), received_bytes, received_bytes_size);
+    }
+    args->cb = cb;
+    args->user_data = user_data;
+    GRPC_CLOSURE_INIT(&args->closure, alts_tsi_handshaker_create_channel, args,
+                      grpc_schedule_on_exec_ctx);
+    // We continue this handshaker_next call at the bottom of the ExecCtx just
+    // so that we can invoke grpc_channel_create at the bottom of the call
+    // stack. Doing so avoids potential lock cycles between g_init_mu and other
+    // mutexes within core that might be held on the current call stack
+    // (note that g_init_mu gets acquired during channel creation).
+    grpc_core::ExecCtx::Run(DEBUG_LOCATION, &args->closure, GRPC_ERROR_NONE);
+  } else {
+    tsi_result ok = alts_tsi_handshaker_continue_handshaker_next(
+        handshaker, received_bytes, received_bytes_size, cb, user_data);
+    if (ok != TSI_OK) {
+      gpr_log(GPR_ERROR, "Failed to schedule ALTS handshaker requests");
+      return ok;
+    }
+  }
+  return TSI_ASYNC;
+}
+
+/*
+ * This API will be invoked by a non-gRPC application, and an ExecCtx needs
+ * to be explicitly created in order to invoke ALTS handshaker client API's
+ * that assumes the caller is inside gRPC core.
+ */
+static tsi_result handshaker_next_dedicated(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** result,
+    tsi_handshaker_on_next_done_cb cb, void* user_data) {
+  grpc_core::ExecCtx exec_ctx;
+  return handshaker_next(self, received_bytes, received_bytes_size,
+                         bytes_to_send, bytes_to_send_size, result, cb,
+                         user_data);
+}
+
+static void handshaker_shutdown(tsi_handshaker* self) {
+  GPR_ASSERT(self != nullptr);
+  alts_tsi_handshaker* handshaker =
+      reinterpret_cast<alts_tsi_handshaker*>(self);
+  grpc_core::MutexLock lock(&handshaker->mu);
+  if (handshaker->shutdown) {
+    return;
+  }
+  if (handshaker->client != nullptr) {
+    alts_handshaker_client_shutdown(handshaker->client);
+  }
+  handshaker->shutdown = true;
+}
+
+static void handshaker_destroy(tsi_handshaker* self) {
+  if (self == nullptr) {
+    return;
+  }
+  alts_tsi_handshaker* handshaker =
+      reinterpret_cast<alts_tsi_handshaker*>(self);
+  alts_handshaker_client_destroy(handshaker->client);
+  grpc_slice_unref_internal(handshaker->target_name);
+  grpc_alts_credentials_options_destroy(handshaker->options);
+  if (handshaker->channel != nullptr) {
+    grpc_channel_destroy_internal(handshaker->channel);
+  }
+  gpr_free(handshaker->handshaker_service_url);
+  gpr_mu_destroy(&handshaker->mu);
+  gpr_free(handshaker);
+}
+
+static const tsi_handshaker_vtable handshaker_vtable = {
+    nullptr,         nullptr,
+    nullptr,         nullptr,
+    nullptr,         handshaker_destroy,
+    handshaker_next, handshaker_shutdown};
+
+static const tsi_handshaker_vtable handshaker_vtable_dedicated = {
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    handshaker_destroy,
+    handshaker_next_dedicated,
+    handshaker_shutdown};
+
+bool alts_tsi_handshaker_has_shutdown(alts_tsi_handshaker* handshaker) {
+  GPR_ASSERT(handshaker != nullptr);
+  grpc_core::MutexLock lock(&handshaker->mu);
+  return handshaker->shutdown;
+}
+
+tsi_result alts_tsi_handshaker_create(
+    const grpc_alts_credentials_options* options, const char* target_name,
+    const char* handshaker_service_url, bool is_client,
+    grpc_pollset_set* interested_parties, tsi_handshaker** self) {
+  if (handshaker_service_url == nullptr || self == nullptr ||
+      options == nullptr || (is_client && target_name == nullptr)) {
+    gpr_log(GPR_ERROR, "Invalid arguments to alts_tsi_handshaker_create()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_tsi_handshaker* handshaker =
+      static_cast<alts_tsi_handshaker*>(gpr_zalloc(sizeof(*handshaker)));
+  gpr_mu_init(&handshaker->mu);
+  handshaker->use_dedicated_cq = interested_parties == nullptr;
+  handshaker->client = nullptr;
+  handshaker->is_client = is_client;
+  handshaker->has_sent_start_message = false;
+  handshaker->target_name = target_name == nullptr
+                                ? grpc_empty_slice()
+                                : grpc_slice_from_static_string(target_name);
+  handshaker->interested_parties = interested_parties;
+  handshaker->has_created_handshaker_client = false;
+  handshaker->handshaker_service_url = gpr_strdup(handshaker_service_url);
+  handshaker->options = grpc_alts_credentials_options_copy(options);
+  handshaker->base.vtable = handshaker->use_dedicated_cq
+                                ? &handshaker_vtable_dedicated
+                                : &handshaker_vtable;
+  *self = &handshaker->base;
+  return TSI_OK;
+}
+
+void alts_tsi_handshaker_result_set_unused_bytes(tsi_handshaker_result* self,
+                                                 grpc_slice* recv_bytes,
+                                                 size_t bytes_consumed) {
+  GPR_ASSERT(recv_bytes != nullptr && self != nullptr);
+  if (GRPC_SLICE_LENGTH(*recv_bytes) == bytes_consumed) {
+    return;
+  }
+  alts_tsi_handshaker_result* result =
+      reinterpret_cast<alts_tsi_handshaker_result*>(self);
+  result->unused_bytes_size = GRPC_SLICE_LENGTH(*recv_bytes) - bytes_consumed;
+  result->unused_bytes =
+      static_cast<unsigned char*>(gpr_zalloc(result->unused_bytes_size));
+  memcpy(result->unused_bytes,
+         GRPC_SLICE_START_PTR(*recv_bytes) + bytes_consumed,
+         result->unused_bytes_size);
+}
+
+namespace grpc_core {
+namespace internal {
+
+bool alts_tsi_handshaker_get_has_sent_start_message_for_testing(
+    alts_tsi_handshaker* handshaker) {
+  GPR_ASSERT(handshaker != nullptr);
+  return handshaker->has_sent_start_message;
+}
+
+void alts_tsi_handshaker_set_client_vtable_for_testing(
+    alts_tsi_handshaker* handshaker, alts_handshaker_client_vtable* vtable) {
+  GPR_ASSERT(handshaker != nullptr);
+  handshaker->client_vtable_for_testing = vtable;
+}
+
+bool alts_tsi_handshaker_get_is_client_for_testing(
+    alts_tsi_handshaker* handshaker) {
+  GPR_ASSERT(handshaker != nullptr);
+  return handshaker->is_client;
+}
+
+alts_handshaker_client* alts_tsi_handshaker_get_client_for_testing(
+    alts_tsi_handshaker* handshaker) {
+  return handshaker->client;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h
new file mode 100644
index 0000000..0c45f06
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h	
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/security/credentials/alts/grpc_alts_credentials_options.h"
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/altscontext.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/altscontext.upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/handshaker.upb.h"
+#endif
+
+#define TSI_ALTS_SERVICE_ACCOUNT_PEER_PROPERTY "service_account"
+#define TSI_ALTS_CERTIFICATE_TYPE "ALTS"
+#define TSI_ALTS_RPC_VERSIONS "rpc_versions"
+#define TSI_ALTS_CONTEXT "alts_context"
+
+const size_t kTsiAltsNumOfPeerProperties = 5;
+
+typedef struct alts_tsi_handshaker alts_tsi_handshaker;
+
+/**
+ * This method creates a ALTS TSI handshaker instance.
+ *
+ * - options: ALTS credentials options containing information passed from TSI
+ *   caller (e.g., rpc protocol versions).
+ * - target_name: the name of the endpoint that the channel is connecting to,
+ *   and will be used for secure naming check.
+ * - handshaker_service_url: address of ALTS handshaker service in the format of
+ *   "host:port".
+ * - is_client: boolean value indicating if the handshaker is used at the client
+ *   (is_client = true) or server (is_client = false) side.
+ * - interested_parties: set of pollsets interested in this connection.
+ * - self: address of ALTS TSI handshaker instance to be returned from the
+ *   method.
+ *
+ * It returns TSI_OK on success and an error status code on failure. Note that
+ * if interested_parties is nullptr, a dedicated TSI thread will be created and
+ * used.
+ */
+tsi_result alts_tsi_handshaker_create(
+    const grpc_alts_credentials_options* options, const char* target_name,
+    const char* handshaker_service_url, bool is_client,
+    grpc_pollset_set* interested_parties, tsi_handshaker** self);
+
+/**
+ * This method creates an ALTS TSI handshaker result instance.
+ *
+ * - resp: data received from the handshaker service.
+ * - is_client: a boolean value indicating if the result belongs to a
+ *   client or not.
+ * - result: address of ALTS TSI handshaker result instance.
+ */
+tsi_result alts_tsi_handshaker_result_create(grpc_gcp_HandshakerResp* resp,
+                                             bool is_client,
+                                             tsi_handshaker_result** result);
+
+/**
+ * This method sets unused bytes of ALTS TSI handshaker result instance.
+ *
+ * - result: an ALTS TSI handshaker result instance.
+ * - recv_bytes: data received from the handshaker service.
+ * - bytes_consumed: size of data consumed by the handshaker service.
+ */
+void alts_tsi_handshaker_result_set_unused_bytes(tsi_handshaker_result* result,
+                                                 grpc_slice* recv_bytes,
+                                                 size_t bytes_consumed);
+
+/**
+ * This method returns a boolean value indicating if an ALTS TSI handshaker
+ * has been shutdown or not.
+ */
+bool alts_tsi_handshaker_has_shutdown(alts_tsi_handshaker* handshaker);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h
new file mode 100644
index 0000000..cb99fdc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_handshaker_private.h	
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * Unsafe, use for testing only. */
+
+alts_handshaker_client* alts_tsi_handshaker_get_client_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+bool alts_tsi_handshaker_get_has_sent_start_message_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+void alts_tsi_handshaker_set_client_vtable_for_testing(
+    alts_tsi_handshaker* handshaker, alts_handshaker_client_vtable* vtable);
+
+bool alts_tsi_handshaker_get_is_client_for_testing(
+    alts_tsi_handshaker* handshaker);
+
+void alts_handshaker_client_set_grpc_caller_for_testing(
+    alts_handshaker_client* client, alts_grpc_caller caller);
+
+grpc_byte_buffer* alts_handshaker_client_get_send_buffer_for_testing(
+    alts_handshaker_client* client);
+
+grpc_byte_buffer** alts_handshaker_client_get_recv_buffer_addr_for_testing(
+    alts_handshaker_client* client);
+
+grpc_metadata_array* alts_handshaker_client_get_initial_metadata_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_set_recv_bytes_for_testing(
+    alts_handshaker_client* client, grpc_slice* recv_bytes);
+
+void alts_handshaker_client_check_fields_for_testing(
+    alts_handshaker_client* client, tsi_handshaker_on_next_done_cb cb,
+    void* user_data, bool has_sent_start_message, grpc_slice* recv_bytes);
+
+void alts_handshaker_client_set_fields_for_testing(
+    alts_handshaker_client* client, alts_tsi_handshaker* handshaker,
+    tsi_handshaker_on_next_done_cb cb, void* user_data,
+    grpc_byte_buffer* recv_buffer, grpc_status_code status);
+
+void alts_handshaker_client_set_vtable_for_testing(
+    alts_handshaker_client* client, alts_handshaker_client_vtable* vtable);
+
+alts_tsi_handshaker* alts_handshaker_client_get_handshaker_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_set_cb_for_testing(
+    alts_handshaker_client* client, tsi_handshaker_on_next_done_cb cb);
+
+grpc_closure* alts_handshaker_client_get_closure_for_testing(
+    alts_handshaker_client* client);
+
+void alts_handshaker_client_on_status_received_for_testing(
+    alts_handshaker_client* client, grpc_status_code status, grpc_error* error);
+
+void alts_handshaker_client_ref_for_testing(alts_handshaker_client* c);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_HANDSHAKER_PRIVATE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.cc
new file mode 100644
index 0000000..f80498d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.cc	
@@ -0,0 +1,64 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/alts_tsi_utils.h"
+
+#include <grpc/byte_buffer_reader.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+
+tsi_result alts_tsi_utils_convert_to_tsi_result(grpc_status_code code) {
+  switch (code) {
+    case GRPC_STATUS_OK:
+      return TSI_OK;
+    case GRPC_STATUS_UNKNOWN:
+      return TSI_UNKNOWN_ERROR;
+    case GRPC_STATUS_INVALID_ARGUMENT:
+      return TSI_INVALID_ARGUMENT;
+    case GRPC_STATUS_NOT_FOUND:
+      return TSI_NOT_FOUND;
+    case GRPC_STATUS_INTERNAL:
+      return TSI_INTERNAL_ERROR;
+    default:
+      return TSI_UNKNOWN_ERROR;
+  }
+}
+
+grpc_gcp_HandshakerResp* alts_tsi_utils_deserialize_response(
+    grpc_byte_buffer* resp_buffer, upb_arena* arena) {
+  GPR_ASSERT(resp_buffer != nullptr);
+  GPR_ASSERT(arena != nullptr);
+  grpc_byte_buffer_reader bbr;
+  grpc_byte_buffer_reader_init(&bbr, resp_buffer);
+  grpc_slice slice = grpc_byte_buffer_reader_readall(&bbr);
+  size_t buf_size = GPR_SLICE_LENGTH(slice);
+  void* buf = upb_arena_malloc(arena, buf_size);
+  memcpy(buf, reinterpret_cast<const char*>(GPR_SLICE_START_PTR(slice)),
+         buf_size);
+  grpc_gcp_HandshakerResp* resp = grpc_gcp_HandshakerResp_parse(
+      reinterpret_cast<char*>(buf), buf_size, arena);
+  grpc_slice_unref_internal(slice);
+  grpc_byte_buffer_reader_destroy(&bbr);
+  if (resp == nullptr) {
+    gpr_log(GPR_ERROR, "grpc_gcp_handshaker_resp_decode() failed");
+    return nullptr;
+  }
+  return resp;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.h
new file mode 100644
index 0000000..b044e6b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/alts_tsi_utils.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/handshaker.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/handshaker.upb.h"
+#endif
+
+/**
+ * This method converts grpc_status_code code to the corresponding tsi_result
+ * code.
+ *
+ * - code: grpc_status_code code.
+ *
+ * It returns the converted tsi_result code.
+ */
+tsi_result alts_tsi_utils_convert_to_tsi_result(grpc_status_code code);
+
+/**
+ * This method deserializes a handshaker response returned from ALTS handshaker
+ * service.
+ *
+ * - bytes_received: data returned from ALTS handshaker service.
+ * - arena: upb arena.
+ *
+ * It returns a deserialized handshaker response on success and nullptr on
+ * failure.
+ */
+grpc_gcp_HandshakerResp* alts_tsi_utils_deserialize_response(
+    grpc_byte_buffer* resp_buffer, upb_arena* arena);
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_ALTS_TSI_UTILS_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.cc
new file mode 100644
index 0000000..c7b9faf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.cc	
@@ -0,0 +1,223 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/handshaker/transport_security_common_api.h"
+
+bool grpc_gcp_rpc_protocol_versions_set_max(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t max_major,
+    uint32_t max_minor) {
+  if (versions == nullptr) {
+    gpr_log(GPR_ERROR,
+            "versions is nullptr in "
+            "grpc_gcp_rpc_protocol_versions_set_max().");
+    return false;
+  }
+  versions->max_rpc_version.major = max_major;
+  versions->max_rpc_version.minor = max_minor;
+  return true;
+}
+
+bool grpc_gcp_rpc_protocol_versions_set_min(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t min_major,
+    uint32_t min_minor) {
+  if (versions == nullptr) {
+    gpr_log(GPR_ERROR,
+            "versions is nullptr in "
+            "grpc_gcp_rpc_protocol_versions_set_min().");
+    return false;
+  }
+  versions->min_rpc_version.major = min_major;
+  versions->min_rpc_version.minor = min_minor;
+  return true;
+}
+
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_rpc_protocol_versions* versions, grpc_slice* slice) {
+  if (versions == nullptr || slice == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_gcp_rpc_protocol_versions_encode().");
+    return false;
+  }
+  upb::Arena arena;
+  grpc_gcp_RpcProtocolVersions* versions_msg =
+      grpc_gcp_RpcProtocolVersions_new(arena.ptr());
+  grpc_gcp_RpcProtocolVersions_assign_from_struct(versions_msg, arena.ptr(),
+                                                  versions);
+  return grpc_gcp_rpc_protocol_versions_encode(versions_msg, arena.ptr(),
+                                               slice);
+}
+
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    grpc_slice* slice) {
+  if (versions == nullptr || arena == nullptr || slice == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to "
+            "grpc_gcp_rpc_protocol_versions_encode().");
+    return false;
+  }
+  size_t buf_length;
+  char* buf =
+      grpc_gcp_RpcProtocolVersions_serialize(versions, arena, &buf_length);
+  if (buf == nullptr) {
+    return false;
+  }
+  *slice = grpc_slice_from_copied_buffer(buf, buf_length);
+  return true;
+}
+
+bool grpc_gcp_rpc_protocol_versions_decode(
+    const grpc_slice& slice, grpc_gcp_rpc_protocol_versions* versions) {
+  if (versions == nullptr) {
+    gpr_log(GPR_ERROR,
+            "version is nullptr in "
+            "grpc_gcp_rpc_protocol_versions_decode().");
+    return false;
+  }
+  upb::Arena arena;
+  grpc_gcp_RpcProtocolVersions* versions_msg =
+      grpc_gcp_RpcProtocolVersions_parse(
+          reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(slice)),
+          GRPC_SLICE_LENGTH(slice), arena.ptr());
+  if (versions_msg == nullptr) {
+    gpr_log(GPR_ERROR, "cannot deserialize RpcProtocolVersions message");
+    return false;
+  }
+  grpc_gcp_rpc_protocol_versions_assign_from_upb(versions, versions_msg);
+  return true;
+}
+
+void grpc_gcp_rpc_protocol_versions_assign_from_upb(
+    grpc_gcp_rpc_protocol_versions* versions,
+    const grpc_gcp_RpcProtocolVersions* value) {
+  const grpc_gcp_RpcProtocolVersions_Version* max_version_msg =
+      grpc_gcp_RpcProtocolVersions_max_rpc_version(value);
+  if (max_version_msg != nullptr) {
+    versions->max_rpc_version.major =
+        grpc_gcp_RpcProtocolVersions_Version_major(max_version_msg);
+    versions->max_rpc_version.minor =
+        grpc_gcp_RpcProtocolVersions_Version_minor(max_version_msg);
+  } else {
+    versions->max_rpc_version.major = 0;
+    versions->max_rpc_version.minor = 0;
+  }
+  const grpc_gcp_RpcProtocolVersions_Version* min_version_msg =
+      grpc_gcp_RpcProtocolVersions_min_rpc_version(value);
+  if (min_version_msg != nullptr) {
+    versions->min_rpc_version.major =
+        grpc_gcp_RpcProtocolVersions_Version_major(min_version_msg);
+    versions->min_rpc_version.minor =
+        grpc_gcp_RpcProtocolVersions_Version_minor(min_version_msg);
+  } else {
+    versions->min_rpc_version.major = 0;
+    versions->min_rpc_version.minor = 0;
+  }
+}
+
+void grpc_gcp_RpcProtocolVersions_assign_from_struct(
+    grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    const grpc_gcp_rpc_protocol_versions* value) {
+  grpc_gcp_RpcProtocolVersions_Version* max_version_msg =
+      grpc_gcp_RpcProtocolVersions_mutable_max_rpc_version(versions, arena);
+  grpc_gcp_RpcProtocolVersions_Version_set_major(max_version_msg,
+                                                 value->max_rpc_version.major);
+  grpc_gcp_RpcProtocolVersions_Version_set_minor(max_version_msg,
+                                                 value->max_rpc_version.minor);
+  grpc_gcp_RpcProtocolVersions_Version* min_version_msg =
+      grpc_gcp_RpcProtocolVersions_mutable_min_rpc_version(versions, arena);
+  grpc_gcp_RpcProtocolVersions_Version_set_major(min_version_msg,
+                                                 value->min_rpc_version.major);
+  grpc_gcp_RpcProtocolVersions_Version_set_minor(min_version_msg,
+                                                 value->min_rpc_version.minor);
+}
+
+bool grpc_gcp_rpc_protocol_versions_copy(
+    const grpc_gcp_rpc_protocol_versions* src,
+    grpc_gcp_rpc_protocol_versions* dst) {
+  if ((src == nullptr && dst != nullptr) ||
+      (src != nullptr && dst == nullptr)) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to "
+            "grpc_gcp_rpc_protocol_versions_copy().");
+    return false;
+  }
+  if (src == nullptr) {
+    return true;
+  }
+  grpc_gcp_rpc_protocol_versions_set_max(dst, src->max_rpc_version.major,
+                                         src->max_rpc_version.minor);
+  grpc_gcp_rpc_protocol_versions_set_min(dst, src->min_rpc_version.major,
+                                         src->min_rpc_version.minor);
+  return true;
+}
+
+namespace grpc_core {
+namespace internal {
+
+int grpc_gcp_rpc_protocol_version_compare(
+    const grpc_gcp_rpc_protocol_versions_version* v1,
+    const grpc_gcp_rpc_protocol_versions_version* v2) {
+  if ((v1->major > v2->major) ||
+      (v1->major == v2->major && v1->minor > v2->minor)) {
+    return 1;
+  }
+  if ((v1->major < v2->major) ||
+      (v1->major == v2->major && v1->minor < v2->minor)) {
+    return -1;
+  }
+  return 0;
+}
+
+}  // namespace internal
+}  // namespace grpc_core
+
+bool grpc_gcp_rpc_protocol_versions_check(
+    const grpc_gcp_rpc_protocol_versions* local_versions,
+    const grpc_gcp_rpc_protocol_versions* peer_versions,
+    grpc_gcp_rpc_protocol_versions_version* highest_common_version) {
+  if (local_versions == nullptr || peer_versions == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to "
+            "grpc_gcp_rpc_protocol_versions_check().");
+    return false;
+  }
+  /* max_common_version is MIN(local.max, peer.max) */
+  const grpc_gcp_rpc_protocol_versions_version* max_common_version =
+      grpc_core::internal::grpc_gcp_rpc_protocol_version_compare(
+          &local_versions->max_rpc_version, &peer_versions->max_rpc_version) > 0
+          ? &peer_versions->max_rpc_version
+          : &local_versions->max_rpc_version;
+  /* min_common_version is MAX(local.min, peer.min) */
+  const grpc_gcp_rpc_protocol_versions_version* min_common_version =
+      grpc_core::internal::grpc_gcp_rpc_protocol_version_compare(
+          &local_versions->min_rpc_version, &peer_versions->min_rpc_version) > 0
+          ? &local_versions->min_rpc_version
+          : &peer_versions->min_rpc_version;
+  bool result = grpc_core::internal::grpc_gcp_rpc_protocol_version_compare(
+                    max_common_version, min_common_version) >= 0
+                    ? true
+                    : false;
+  if (result && highest_common_version != nullptr) {
+    memcpy(highest_common_version, max_common_version,
+           sizeof(grpc_gcp_rpc_protocol_versions_version));
+  }
+  return result;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.h
new file mode 100644
index 0000000..daed937
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/handshaker/transport_security_common_api.h	
@@ -0,0 +1,175 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H
+#define GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#if COCOAPODS==1
+  #include  "src/core/ext/upb-generated/src/proto/grpc/gcp/transport_security_common.upb.h"
+#else
+  #include  "src/proto/grpc/gcp/transport_security_common.upb.h"
+#endif
+
+// C struct coresponding to protobuf message RpcProtocolVersions.Version
+typedef struct _grpc_gcp_RpcProtocolVersions_Version {
+  uint32_t major;
+  uint32_t minor;
+} grpc_gcp_rpc_protocol_versions_version;
+
+// C struct coresponding to protobuf message RpcProtocolVersions
+typedef struct _grpc_gcp_RpcProtocolVersions {
+  grpc_gcp_rpc_protocol_versions_version max_rpc_version;
+  grpc_gcp_rpc_protocol_versions_version min_rpc_version;
+} grpc_gcp_rpc_protocol_versions;
+
+/**
+ * This method sets the value for max_rpc_versions field of rpc protocol
+ * versions.
+ *
+ * - versions: an rpc protocol version instance.
+ * - max_major: a major version of maximum supported RPC version.
+ * - max_minor: a minor version of maximum supported RPC version.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_set_max(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t max_major,
+    uint32_t max_minor);
+
+/**
+ * This method sets the value for min_rpc_versions field of rpc protocol
+ * versions.
+ *
+ * - versions: an rpc protocol version instance.
+ * - min_major: a major version of minimum supported RPC version.
+ * - min_minor: a minor version of minimum supported RPC version.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_set_min(
+    grpc_gcp_rpc_protocol_versions* versions, uint32_t min_major,
+    uint32_t min_minor);
+
+/**
+ * This method serializes an rpc protocol version and returns serialized rpc
+ * versions in grpc slice.
+ *
+ * - versions: an rpc protocol versions instance.
+ * - slice: grpc slice where the serialized result will be written.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_rpc_protocol_versions* versions, grpc_slice* slice);
+
+/**
+ * This method serializes an rpc protocol version and returns serialized rpc
+ * versions in grpc slice.
+ *
+ * - versions: an rpc protocol versions instance.
+ * - arena: upb arena.
+ * - slice: grpc slice where the serialized result will be written.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_encode(
+    const grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    grpc_slice* slice);
+
+/**
+ * This method de-serializes input in grpc slice form and stores the result
+ * in rpc protocol versions.
+ *
+ * - slice: a data stream containing a serialized rpc protocol version.
+ * - versions: an rpc protocol version instance used to hold de-serialized
+ *   result.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_decode(
+    const grpc_slice& slice, grpc_gcp_rpc_protocol_versions* versions);
+
+/**
+ * Assigns value of upb RpcProtocolVersions to grpc_gcp_rpc_protocol_versions.
+ */
+void grpc_gcp_rpc_protocol_versions_assign_from_upb(
+    grpc_gcp_rpc_protocol_versions* versions,
+    const grpc_gcp_RpcProtocolVersions* value);
+
+/**
+ * Assigns value of struct grpc_gcp_rpc_protocol_versions to
+ * RpcProtocolVersions.
+ */
+void grpc_gcp_RpcProtocolVersions_assign_from_struct(
+    grpc_gcp_RpcProtocolVersions* versions, upb_arena* arena,
+    const grpc_gcp_rpc_protocol_versions* value);
+
+/**
+ * This method performs a deep copy operation on rpc protocol versions
+ * instance.
+ *
+ * - src: rpc protocol versions instance that needs to be copied.
+ * - dst: rpc protocol versions instance that stores the copied result.
+ *
+ * The method returns true on success and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_copy(
+    const grpc_gcp_rpc_protocol_versions* src,
+    grpc_gcp_rpc_protocol_versions* dst);
+
+/**
+ * This method performs a version check between local and peer rpc protocol
+ * versions.
+ *
+ * - local_versions: local rpc protocol versions instance.
+ * - peer_versions: peer rpc protocol versions instance.
+ * - highest_common_version: an output parameter that will store the highest
+ *   common rpc protocol version both parties agreed on.
+ *
+ * The method returns true if the check passes which means both parties agreed
+ * on a common rpc protocol to use, and false otherwise.
+ */
+bool grpc_gcp_rpc_protocol_versions_check(
+    const grpc_gcp_rpc_protocol_versions* local_versions,
+    const grpc_gcp_rpc_protocol_versions* peer_versions,
+    grpc_gcp_rpc_protocol_versions_version* highest_common_version);
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * Exposed for testing only.
+ * The method returns 0 if v1 = v2,
+ *            returns 1 if v1 > v2,
+ *            returns -1 if v1 < v2.
+ */
+int grpc_gcp_rpc_protocol_version_compare(
+    const grpc_gcp_rpc_protocol_versions_version* v1,
+    const grpc_gcp_rpc_protocol_versions_version* v2);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_TSI_ALTS_HANDSHAKER_TRANSPORT_SECURITY_COMMON_API_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.cc
new file mode 100644
index 0000000..352561d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.cc	
@@ -0,0 +1,226 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include <string.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+
+/* Main struct for alts_grpc_integrity_only_record_protocol.  */
+typedef struct alts_grpc_integrity_only_record_protocol {
+  alts_grpc_record_protocol base;
+  bool enable_extra_copy;
+  grpc_slice_buffer data_sb;
+  unsigned char* tag_buf;
+} alts_grpc_integrity_only_record_protocol;
+
+/* --- alts_grpc_record_protocol methods implementation. --- */
+
+static tsi_result alts_grpc_integrity_only_extra_copy_protect(
+    alts_grpc_record_protocol* rp, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  /* Allocates memory for protected frame and copies data.  */
+  size_t data_length = unprotected_slices->length;
+  size_t protected_frame_size =
+      unprotected_slices->length + rp->header_length + rp->tag_length;
+  grpc_slice protected_slice = GRPC_SLICE_MALLOC(protected_frame_size);
+  uint8_t* data = GRPC_SLICE_START_PTR(protected_slice) + rp->header_length;
+  for (size_t i = 0; i < unprotected_slices->count; i++) {
+    memcpy(data, GRPC_SLICE_START_PTR(unprotected_slices->slices[i]),
+           GRPC_SLICE_LENGTH(unprotected_slices->slices[i]));
+    data += GRPC_SLICE_LENGTH(unprotected_slices->slices[i]);
+  }
+  /* Calls alts_iovec_record_protocol protect.  */
+  char* error_details = nullptr;
+  iovec_t header_iovec = {GRPC_SLICE_START_PTR(protected_slice),
+                          rp->header_length};
+  iovec_t tag_iovec = {
+      GRPC_SLICE_START_PTR(protected_slice) + rp->header_length + data_length,
+      rp->tag_length};
+  rp->iovec_buf[0].iov_base =
+      GRPC_SLICE_START_PTR(protected_slice) + rp->header_length;
+  rp->iovec_buf[0].iov_len = data_length;
+  grpc_status_code status = alts_iovec_record_protocol_integrity_only_protect(
+      rp->iovec_rp, rp->iovec_buf, 1, header_iovec, tag_iovec, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to protect, %s", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  grpc_slice_buffer_add(protected_slices, protected_slice);
+  grpc_slice_buffer_reset_and_unref_internal(unprotected_slices);
+  return TSI_OK;
+}
+
+static tsi_result alts_grpc_integrity_only_protect(
+    alts_grpc_record_protocol* rp, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  /* Input sanity check.  */
+  if (rp == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_grpc_record_protocol protect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_grpc_integrity_only_record_protocol* integrity_only_record_protocol =
+      reinterpret_cast<alts_grpc_integrity_only_record_protocol*>(rp);
+  if (integrity_only_record_protocol->enable_extra_copy) {
+    return alts_grpc_integrity_only_extra_copy_protect(rp, unprotected_slices,
+                                                       protected_slices);
+  }
+  /* Allocates memory for header and tag slices.  */
+  grpc_slice header_slice = GRPC_SLICE_MALLOC(rp->header_length);
+  grpc_slice tag_slice = GRPC_SLICE_MALLOC(rp->tag_length);
+  /* Calls alts_iovec_record_protocol protect.  */
+  char* error_details = nullptr;
+  iovec_t header_iovec = {GRPC_SLICE_START_PTR(header_slice),
+                          GRPC_SLICE_LENGTH(header_slice)};
+  iovec_t tag_iovec = {GRPC_SLICE_START_PTR(tag_slice),
+                       GRPC_SLICE_LENGTH(tag_slice)};
+  alts_grpc_record_protocol_convert_slice_buffer_to_iovec(rp,
+                                                          unprotected_slices);
+  grpc_status_code status = alts_iovec_record_protocol_integrity_only_protect(
+      rp->iovec_rp, rp->iovec_buf, unprotected_slices->count, header_iovec,
+      tag_iovec, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to protect, %s", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  /* Appends result to protected_slices.  */
+  grpc_slice_buffer_add(protected_slices, header_slice);
+  grpc_slice_buffer_move_into(unprotected_slices, protected_slices);
+  grpc_slice_buffer_add(protected_slices, tag_slice);
+  return TSI_OK;
+}
+
+static tsi_result alts_grpc_integrity_only_unprotect(
+    alts_grpc_record_protocol* rp, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  /* Input sanity check.  */
+  if (rp == nullptr || protected_slices == nullptr ||
+      unprotected_slices == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to alts_grpc_record_protocol unprotect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (protected_slices->length < rp->header_length + rp->tag_length) {
+    gpr_log(GPR_ERROR, "Protected slices do not have sufficient data.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* In this method, rp points to alts_grpc_record_protocol struct
+   * and integrity_only_record_protocol points to
+   * alts_grpc_integrity_only_record_protocol struct.  */
+  alts_grpc_integrity_only_record_protocol* integrity_only_record_protocol =
+      reinterpret_cast<alts_grpc_integrity_only_record_protocol*>(rp);
+  /* Strips frame header from protected slices.  */
+  grpc_slice_buffer_reset_and_unref_internal(&rp->header_sb);
+  grpc_slice_buffer_move_first(protected_slices, rp->header_length,
+                               &rp->header_sb);
+  GPR_ASSERT(rp->header_sb.length == rp->header_length);
+  iovec_t header_iovec = alts_grpc_record_protocol_get_header_iovec(rp);
+  /* Moves protected slices data to data_sb and leaves the remaining tag.  */
+  grpc_slice_buffer_reset_and_unref_internal(
+      &integrity_only_record_protocol->data_sb);
+  grpc_slice_buffer_move_first(protected_slices,
+                               protected_slices->length - rp->tag_length,
+                               &integrity_only_record_protocol->data_sb);
+  GPR_ASSERT(protected_slices->length == rp->tag_length);
+  iovec_t tag_iovec = {nullptr, rp->tag_length};
+  if (protected_slices->count == 1) {
+    tag_iovec.iov_base = GRPC_SLICE_START_PTR(protected_slices->slices[0]);
+  } else {
+    /* Frame tag is in multiple slices, copies the tag bytes from slice
+     * buffer to a single flat buffer.  */
+    alts_grpc_record_protocol_copy_slice_buffer(
+        protected_slices, integrity_only_record_protocol->tag_buf);
+    tag_iovec.iov_base = integrity_only_record_protocol->tag_buf;
+  }
+  /* Calls alts_iovec_record_protocol unprotect.  */
+  char* error_details = nullptr;
+  alts_grpc_record_protocol_convert_slice_buffer_to_iovec(
+      rp, &integrity_only_record_protocol->data_sb);
+  grpc_status_code status = alts_iovec_record_protocol_integrity_only_unprotect(
+      rp->iovec_rp, rp->iovec_buf,
+      integrity_only_record_protocol->data_sb.count, header_iovec, tag_iovec,
+      &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to unprotect, %s", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  grpc_slice_buffer_reset_and_unref_internal(&rp->header_sb);
+  grpc_slice_buffer_reset_and_unref_internal(protected_slices);
+  grpc_slice_buffer_move_into(&integrity_only_record_protocol->data_sb,
+                              unprotected_slices);
+  return TSI_OK;
+}
+
+static void alts_grpc_integrity_only_destruct(alts_grpc_record_protocol* rp) {
+  if (rp == nullptr) {
+    return;
+  }
+  alts_grpc_integrity_only_record_protocol* integrity_only_rp =
+      reinterpret_cast<alts_grpc_integrity_only_record_protocol*>(rp);
+  grpc_slice_buffer_destroy_internal(&integrity_only_rp->data_sb);
+  gpr_free(integrity_only_rp->tag_buf);
+}
+
+static const alts_grpc_record_protocol_vtable
+    alts_grpc_integrity_only_record_protocol_vtable = {
+        alts_grpc_integrity_only_protect, alts_grpc_integrity_only_unprotect,
+        alts_grpc_integrity_only_destruct};
+
+tsi_result alts_grpc_integrity_only_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, bool enable_extra_copy, alts_grpc_record_protocol** rp) {
+  if (crypter == nullptr || rp == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_grpc_record_protocol create.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_grpc_integrity_only_record_protocol* impl =
+      static_cast<alts_grpc_integrity_only_record_protocol*>(
+          gpr_zalloc(sizeof(alts_grpc_integrity_only_record_protocol)));
+  /* Calls alts_grpc_record_protocol init.  */
+  tsi_result result = alts_grpc_record_protocol_init(
+      &impl->base, crypter, overflow_size, is_client,
+      /*is_integrity_only=*/true, is_protect);
+  if (result != TSI_OK) {
+    gpr_free(impl);
+    return result;
+  }
+  impl->enable_extra_copy = enable_extra_copy;
+  /* Initializes slice buffer for data_sb.  */
+  grpc_slice_buffer_init(&impl->data_sb);
+  /* Allocates tag buffer.  */
+  impl->tag_buf =
+      static_cast<unsigned char*>(gpr_malloc(impl->base.tag_length));
+  impl->base.vtable = &alts_grpc_integrity_only_record_protocol_vtable;
+  *rp = &impl->base;
+  return TSI_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h
new file mode 100644
index 0000000..5456d34
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h	
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+
+/**
+ * This method creates an integrity-only alts_grpc_record_protocol instance,
+ * given a gsec_aead_crypter instance and a flag indicating if the created
+ * instance will be used at the client or server side. The ownership of
+ * gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - overflow_size: overflow size of counter in bytes.
+ * - is_client: a flag indicating if the alts_grpc_record_protocol instance will
+ *   be used at the client or server side.
+ * - is_protect: a flag indicating if the alts_grpc_record_protocol instance
+ *   will be used for protect or unprotect.
+ *-  enable_extra_copy: a flag indicating if the instance uses one-copy instead
+ *   of zero-copy in the protect operation.
+ * - rp: an alts_grpc_record_protocol instance to be returned from
+ *   the method.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_integrity_only_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, bool enable_extra_copy, alts_grpc_record_protocol** rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_INTEGRITY_ONLY_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.cc
new file mode 100644
index 0000000..e789090
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.cc	
@@ -0,0 +1,144 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+
+/* Privacy-integrity alts_grpc_record_protocol object uses the same struct
+ * defined in alts_grpc_record_protocol_common.h.  */
+
+/* --- alts_grpc_record_protocol methods implementation. --- */
+
+static tsi_result alts_grpc_privacy_integrity_protect(
+    alts_grpc_record_protocol* rp, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  /* Input sanity check.  */
+  if (rp == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_grpc_record_protocol protect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* Allocates memory for output frame. In privacy-integrity protect, the
+   * protected frame is stored in a newly allocated buffer.  */
+  size_t protected_frame_size =
+      unprotected_slices->length + rp->header_length +
+      alts_iovec_record_protocol_get_tag_length(rp->iovec_rp);
+  grpc_slice protected_slice = GRPC_SLICE_MALLOC(protected_frame_size);
+  iovec_t protected_iovec = {GRPC_SLICE_START_PTR(protected_slice),
+                             GRPC_SLICE_LENGTH(protected_slice)};
+  /* Calls alts_iovec_record_protocol protect.  */
+  char* error_details = nullptr;
+  alts_grpc_record_protocol_convert_slice_buffer_to_iovec(rp,
+                                                          unprotected_slices);
+  grpc_status_code status =
+      alts_iovec_record_protocol_privacy_integrity_protect(
+          rp->iovec_rp, rp->iovec_buf, unprotected_slices->count,
+          protected_iovec, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to protect, %s", error_details);
+    gpr_free(error_details);
+    grpc_slice_unref_internal(protected_slice);
+    return TSI_INTERNAL_ERROR;
+  }
+  grpc_slice_buffer_add(protected_slices, protected_slice);
+  grpc_slice_buffer_reset_and_unref_internal(unprotected_slices);
+  return TSI_OK;
+}
+
+static tsi_result alts_grpc_privacy_integrity_unprotect(
+    alts_grpc_record_protocol* rp, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  /* Input sanity check.  */
+  if (rp == nullptr || protected_slices == nullptr ||
+      unprotected_slices == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to alts_grpc_record_protocol unprotect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* Allocates memory for output frame. In privacy-integrity unprotect, the
+   * unprotected data are stored in a newly allocated buffer.  */
+  if (protected_slices->length < rp->header_length + rp->tag_length) {
+    gpr_log(GPR_ERROR, "Protected slices do not have sufficient data.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  size_t unprotected_frame_size =
+      protected_slices->length - rp->header_length - rp->tag_length;
+  grpc_slice unprotected_slice = GRPC_SLICE_MALLOC(unprotected_frame_size);
+  iovec_t unprotected_iovec = {GRPC_SLICE_START_PTR(unprotected_slice),
+                               GRPC_SLICE_LENGTH(unprotected_slice)};
+  /* Strips frame header from protected slices.  */
+  grpc_slice_buffer_reset_and_unref_internal(&rp->header_sb);
+  grpc_slice_buffer_move_first(protected_slices, rp->header_length,
+                               &rp->header_sb);
+  iovec_t header_iovec = alts_grpc_record_protocol_get_header_iovec(rp);
+  /* Calls alts_iovec_record_protocol unprotect.  */
+  char* error_details = nullptr;
+  alts_grpc_record_protocol_convert_slice_buffer_to_iovec(rp, protected_slices);
+  grpc_status_code status =
+      alts_iovec_record_protocol_privacy_integrity_unprotect(
+          rp->iovec_rp, header_iovec, rp->iovec_buf, protected_slices->count,
+          unprotected_iovec, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to unprotect, %s", error_details);
+    gpr_free(error_details);
+    grpc_slice_unref_internal(unprotected_slice);
+    return TSI_INTERNAL_ERROR;
+  }
+  grpc_slice_buffer_reset_and_unref_internal(&rp->header_sb);
+  grpc_slice_buffer_reset_and_unref_internal(protected_slices);
+  grpc_slice_buffer_add(unprotected_slices, unprotected_slice);
+  return TSI_OK;
+}
+
+static const alts_grpc_record_protocol_vtable
+    alts_grpc_privacy_integrity_record_protocol_vtable = {
+        alts_grpc_privacy_integrity_protect,
+        alts_grpc_privacy_integrity_unprotect, nullptr};
+
+tsi_result alts_grpc_privacy_integrity_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, alts_grpc_record_protocol** rp) {
+  if (crypter == nullptr || rp == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_grpc_record_protocol create.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  auto* impl = static_cast<alts_grpc_record_protocol*>(
+      gpr_zalloc(sizeof(alts_grpc_record_protocol)));
+  /* Calls alts_grpc_record_protocol init.  */
+  tsi_result result =
+      alts_grpc_record_protocol_init(impl, crypter, overflow_size, is_client,
+                                     /*is_integrity_only=*/false, is_protect);
+  if (result != TSI_OK) {
+    gpr_free(impl);
+    return result;
+  }
+  impl->vtable = &alts_grpc_privacy_integrity_record_protocol_vtable;
+  *rp = impl;
+  return TSI_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h
new file mode 100644
index 0000000..1e34aef
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h	
@@ -0,0 +1,49 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+
+/**
+ * This method creates a privacy-integrity alts_grpc_record_protocol instance,
+ * given a gsec_aead_crypter instance and a flag indicating if the created
+ * instance will be used at the client or server side. The ownership of
+ * gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - is_client: a flag indicating if the alts_grpc_record_protocol instance will
+ *   be used at the client or server side.
+ * - rp: an alts_grpc_record_protocol instance to be returned from
+ *   the method.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_privacy_integrity_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_protect, alts_grpc_record_protocol** rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_PRIVACY_INTEGRITY_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h
new file mode 100644
index 0000000..d1e433d
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h	
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+/**
+ * This alts_grpc_record_protocol object protects and unprotects a single frame
+ * stored in grpc slice buffer with zero or minimized memory copy.
+ * Implementations of this object must be thread compatible.
+ */
+typedef struct alts_grpc_record_protocol alts_grpc_record_protocol;
+
+/**
+ * This methods performs protect operation on unprotected data and appends the
+ * protected frame to protected_slices. The caller needs to ensure the length
+ * of unprotected data plus the frame overhead is less than or equal to the
+ * maximum frame length. The input unprotected data slice buffer will be
+ * cleared, although the actual unprotected data bytes are not modified.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - unprotected_slices: the unprotected data to be protected.
+ * - protected_slices: slice buffer where the protected frame is appended.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_record_protocol_protect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices);
+
+/**
+ * This methods performs unprotect operation on a full frame of protected data
+ * and appends unprotected data to unprotected_slices. It is the caller's
+ * responsibility to prepare a full frame of data before calling this method.
+ * The input protected frame slice buffer will be cleared, although the actual
+ * protected data bytes are not modified.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - protected_slices: a full frame of protected data in grpc slices.
+ * - unprotected_slices: slice buffer where unprotected data is appended.
+ *
+ * This method returns TSI_OK in case of success or a specific error code in
+ * case of failure.
+ */
+tsi_result alts_grpc_record_protocol_unprotect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices);
+
+/**
+ * This method returns maximum allowed unprotected data size, given maximum
+ * protected frame size.
+ *
+ * - self: an alts_grpc_record_protocol instance.
+ * - max_protected_frame_size: maximum protected frame size.
+ *
+ * On success, the method returns the maximum allowed unprotected data size.
+ * Otherwise, it returns zero.
+ */
+size_t alts_grpc_record_protocol_max_unprotected_data_size(
+    const alts_grpc_record_protocol* self, size_t max_protected_frame_size);
+
+/**
+ * This method destroys an alts_grpc_record_protocol instance by de-allocating
+ * all of its occupied memory.
+ */
+void alts_grpc_record_protocol_destroy(alts_grpc_record_protocol* self);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.cc
new file mode 100644
index 0000000..1048b60
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.cc	
@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+const size_t kInitialIovecBufferSize = 8;
+
+/* Makes sure iovec_buf in alts_grpc_record_protocol is large enough.  */
+static void ensure_iovec_buf_size(alts_grpc_record_protocol* rp,
+                                  const grpc_slice_buffer* sb) {
+  GPR_ASSERT(rp != nullptr && sb != nullptr);
+  if (sb->count <= rp->iovec_buf_length) {
+    return;
+  }
+  /* At least double the iovec buffer size.  */
+  rp->iovec_buf_length = GPR_MAX(sb->count, 2 * rp->iovec_buf_length);
+  rp->iovec_buf = static_cast<iovec_t*>(
+      gpr_realloc(rp->iovec_buf, rp->iovec_buf_length * sizeof(iovec_t)));
+}
+
+/* --- Implementation of methods defined in tsi_grpc_record_protocol_common.h.
+ * --- */
+
+void alts_grpc_record_protocol_convert_slice_buffer_to_iovec(
+    alts_grpc_record_protocol* rp, const grpc_slice_buffer* sb) {
+  GPR_ASSERT(rp != nullptr && sb != nullptr);
+  ensure_iovec_buf_size(rp, sb);
+  for (size_t i = 0; i < sb->count; i++) {
+    rp->iovec_buf[i].iov_base = GRPC_SLICE_START_PTR(sb->slices[i]);
+    rp->iovec_buf[i].iov_len = GRPC_SLICE_LENGTH(sb->slices[i]);
+  }
+}
+
+void alts_grpc_record_protocol_copy_slice_buffer(const grpc_slice_buffer* src,
+                                                 unsigned char* dst) {
+  GPR_ASSERT(src != nullptr && dst != nullptr);
+  for (size_t i = 0; i < src->count; i++) {
+    size_t slice_length = GRPC_SLICE_LENGTH(src->slices[i]);
+    memcpy(dst, GRPC_SLICE_START_PTR(src->slices[i]), slice_length);
+    dst += slice_length;
+  }
+}
+
+iovec_t alts_grpc_record_protocol_get_header_iovec(
+    alts_grpc_record_protocol* rp) {
+  iovec_t header_iovec = {nullptr, 0};
+  if (rp == nullptr) {
+    return header_iovec;
+  }
+  header_iovec.iov_len = rp->header_length;
+  if (rp->header_sb.count == 1) {
+    header_iovec.iov_base = GRPC_SLICE_START_PTR(rp->header_sb.slices[0]);
+  } else {
+    /* Frame header is in multiple slices, copies the header bytes from slice
+     * buffer to a single flat buffer.  */
+    alts_grpc_record_protocol_copy_slice_buffer(&rp->header_sb, rp->header_buf);
+    header_iovec.iov_base = rp->header_buf;
+  }
+  return header_iovec;
+}
+
+tsi_result alts_grpc_record_protocol_init(alts_grpc_record_protocol* rp,
+                                          gsec_aead_crypter* crypter,
+                                          size_t overflow_size, bool is_client,
+                                          bool is_integrity_only,
+                                          bool is_protect) {
+  if (rp == nullptr || crypter == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to alts_grpc_record_protocol init.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* Creates alts_iovec_record_protocol.  */
+  char* error_details = nullptr;
+  grpc_status_code status = alts_iovec_record_protocol_create(
+      crypter, overflow_size, is_client, is_integrity_only, is_protect,
+      &rp->iovec_rp, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to create alts_iovec_record_protocol, %s.",
+            error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  /* Allocates header slice buffer.  */
+  grpc_slice_buffer_init(&rp->header_sb);
+  /* Allocates header buffer.  */
+  rp->header_length = alts_iovec_record_protocol_get_header_length();
+  rp->header_buf = static_cast<unsigned char*>(gpr_malloc(rp->header_length));
+  rp->tag_length = alts_iovec_record_protocol_get_tag_length(rp->iovec_rp);
+  /* Allocates iovec buffer.  */
+  rp->iovec_buf_length = kInitialIovecBufferSize;
+  rp->iovec_buf =
+      static_cast<iovec_t*>(gpr_malloc(rp->iovec_buf_length * sizeof(iovec_t)));
+  return TSI_OK;
+}
+
+/* --- Implementation of methods defined in tsi_grpc_record_protocol.h. --- */
+tsi_result alts_grpc_record_protocol_protect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  if (grpc_core::ExecCtx::Get() == nullptr || self == nullptr ||
+      self->vtable == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->protect == nullptr) {
+    return TSI_UNIMPLEMENTED;
+  }
+  return self->vtable->protect(self, unprotected_slices, protected_slices);
+}
+
+tsi_result alts_grpc_record_protocol_unprotect(
+    alts_grpc_record_protocol* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  if (grpc_core::ExecCtx::Get() == nullptr || self == nullptr ||
+      self->vtable == nullptr || protected_slices == nullptr ||
+      unprotected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->unprotect == nullptr) {
+    return TSI_UNIMPLEMENTED;
+  }
+  return self->vtable->unprotect(self, protected_slices, unprotected_slices);
+}
+
+void alts_grpc_record_protocol_destroy(alts_grpc_record_protocol* self) {
+  if (self == nullptr) {
+    return;
+  }
+  if (self->vtable->destruct != nullptr) {
+    self->vtable->destruct(self);
+  }
+  alts_iovec_record_protocol_destroy(self->iovec_rp);
+  grpc_slice_buffer_destroy_internal(&self->header_sb);
+  gpr_free(self->header_buf);
+  gpr_free(self->iovec_buf);
+  gpr_free(self);
+}
+
+/* Integrity-only and privacy-integrity share the same implementation. No need
+ * to call vtable.  */
+size_t alts_grpc_record_protocol_max_unprotected_data_size(
+    const alts_grpc_record_protocol* self, size_t max_protected_frame_size) {
+  if (self == nullptr) {
+    return 0;
+  }
+  return alts_iovec_record_protocol_max_unprotected_data_size(
+      self->iovec_rp, max_protected_frame_size);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h
new file mode 100644
index 0000000..43b8a4a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol_common.h	
@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H
+
+/**
+ * this file contains alts_grpc_record_protocol internals and internal-only
+ * helper functions. The public functions of alts_grpc_record_protocol are
+ * defined in the alts_grpc_record_protocol.h.
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+
+/* V-table for alts_grpc_record_protocol implementations.  */
+typedef struct {
+  tsi_result (*protect)(alts_grpc_record_protocol* self,
+                        grpc_slice_buffer* unprotected_slices,
+                        grpc_slice_buffer* protected_slices);
+  tsi_result (*unprotect)(alts_grpc_record_protocol* self,
+                          grpc_slice_buffer* protected_slices,
+                          grpc_slice_buffer* unprotected_slices);
+  void (*destruct)(alts_grpc_record_protocol* self);
+} alts_grpc_record_protocol_vtable;
+
+/* Main struct for alts_grpc_record_protocol implementation, shared by both
+ * integrity-only record protocol and privacy-integrity record protocol.
+ * Integrity-only record protocol has additional data elements.
+ * Privacy-integrity record protocol uses this struct directly.  */
+struct alts_grpc_record_protocol {
+  const alts_grpc_record_protocol_vtable* vtable;
+  alts_iovec_record_protocol* iovec_rp;
+  grpc_slice_buffer header_sb;
+  unsigned char* header_buf;
+  size_t header_length;
+  size_t tag_length;
+  iovec_t* iovec_buf;
+  size_t iovec_buf_length;
+};
+
+/**
+ * Converts the slices of input sb into iovec_t's and puts the result into
+ * rp->iovec_buf. Note that the actual data are not copied, only
+ * pointers and lengths are copied.
+ */
+void alts_grpc_record_protocol_convert_slice_buffer_to_iovec(
+    alts_grpc_record_protocol* rp, const grpc_slice_buffer* sb);
+
+/**
+ * Copies bytes from slice buffer to destination buffer. Caller is responsible
+ * for allocating enough memory of destination buffer. This method is used for
+ * copying frame header and tag in case they are stored in multiple slices.
+ */
+void alts_grpc_record_protocol_copy_slice_buffer(const grpc_slice_buffer* src,
+                                                 unsigned char* dst);
+
+/**
+ * This method returns an iovec object pointing to the frame header stored in
+ * rp->header_sb. If the frame header is stored in multiple slices,
+ * this method will copy the bytes in rp->header_sb to
+ * rp->header_buf, and return an iovec object pointing to
+ * rp->header_buf.
+ */
+iovec_t alts_grpc_record_protocol_get_header_iovec(
+    alts_grpc_record_protocol* rp);
+
+/**
+ * Initializes an alts_grpc_record_protocol object, given a gsec_aead_crypter
+ * instance, the overflow size of the counter in bytes, a flag indicating if the
+ * object is used for client or server side, a flag indicating if it is used for
+ * integrity-only or privacy-integrity mode, and a flag indicating if it is for
+ * protect or unprotect. The ownership of gsec_aead_crypter object is
+ * transferred to the alts_grpc_record_protocol object.
+ */
+tsi_result alts_grpc_record_protocol_init(alts_grpc_record_protocol* rp,
+                                          gsec_aead_crypter* crypter,
+                                          size_t overflow_size, bool is_client,
+                                          bool is_integrity_only,
+                                          bool is_protect);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_GRPC_RECORD_PROTOCOL_COMMON_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.cc
new file mode 100644
index 0000000..6a548e5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.cc	
@@ -0,0 +1,476 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/tsi/alts/frame_protector/alts_counter.h"
+
+struct alts_iovec_record_protocol {
+  alts_counter* ctr;
+  gsec_aead_crypter* crypter;
+  size_t tag_length;
+  bool is_integrity_only;
+  bool is_protect;
+};
+
+/* Copies error message to destination.  */
+static void maybe_copy_error_msg(const char* src, char** dst) {
+  if (dst != nullptr && src != nullptr) {
+    *dst = static_cast<char*>(gpr_malloc(strlen(src) + 1));
+    memcpy(*dst, src, strlen(src) + 1);
+  }
+}
+
+/* Appends error message to destination.  */
+static void maybe_append_error_msg(const char* appendix, char** dst) {
+  if (dst != nullptr && appendix != nullptr) {
+    int dst_len = static_cast<int>(strlen(*dst));
+    *dst = static_cast<char*>(realloc(*dst, dst_len + strlen(appendix) + 1));
+    assert(*dst != nullptr);
+    memcpy(*dst + dst_len, appendix, strlen(appendix) + 1);
+  }
+}
+
+/* Use little endian to interpret a string of bytes as uint32_t.  */
+static uint32_t load_32_le(const unsigned char* buffer) {
+  return (((uint32_t)buffer[3]) << 24) | (((uint32_t)buffer[2]) << 16) |
+         (((uint32_t)buffer[1]) << 8) | ((uint32_t)buffer[0]);
+}
+
+/* Store uint32_t as a string of little endian bytes.  */
+static void store_32_le(uint32_t value, unsigned char* buffer) {
+  buffer[3] = (unsigned char)(value >> 24) & 0xFF;
+  buffer[2] = (unsigned char)(value >> 16) & 0xFF;
+  buffer[1] = (unsigned char)(value >> 8) & 0xFF;
+  buffer[0] = (unsigned char)(value)&0xFF;
+}
+
+/* Ensures header and tag iovec have sufficient length.  */
+static grpc_status_code ensure_header_and_tag_length(
+    const alts_iovec_record_protocol* rp, iovec_t header, iovec_t tag,
+    char** error_details) {
+  if (rp == nullptr) {
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (header.iov_base == nullptr) {
+    maybe_copy_error_msg("Header is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (header.iov_len != alts_iovec_record_protocol_get_header_length()) {
+    maybe_copy_error_msg("Header length is incorrect.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (tag.iov_base == nullptr) {
+    maybe_copy_error_msg("Tag is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (tag.iov_len != rp->tag_length) {
+    maybe_copy_error_msg("Tag length is incorrect.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  return GRPC_STATUS_OK;
+}
+
+/* Increments crypter counter and checks overflow.  */
+static grpc_status_code increment_counter(alts_counter* counter,
+                                          char** error_details) {
+  if (counter == nullptr) {
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  bool is_overflow = false;
+  grpc_status_code status =
+      alts_counter_increment(counter, &is_overflow, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  if (is_overflow) {
+    maybe_copy_error_msg("Crypter counter is overflowed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  return GRPC_STATUS_OK;
+}
+
+/* Given an array of iovec, computes the total length of buffer.  */
+static size_t get_total_length(const iovec_t* vec, size_t vec_length) {
+  size_t total_length = 0;
+  for (size_t i = 0; i < vec_length; ++i) {
+    total_length += vec[i].iov_len;
+  }
+  return total_length;
+}
+
+/* Writes frame header given data and tag length.  */
+static grpc_status_code write_frame_header(size_t data_length,
+                                           unsigned char* header,
+                                           char** error_details) {
+  if (header == nullptr) {
+    maybe_copy_error_msg("Header is nullptr.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  size_t frame_length = kZeroCopyFrameMessageTypeFieldSize + data_length;
+  store_32_le(static_cast<uint32_t>(frame_length), header);
+  store_32_le(kZeroCopyFrameMessageType,
+              header + kZeroCopyFrameLengthFieldSize);
+  return GRPC_STATUS_OK;
+}
+
+/* Verifies frame header given protected data length.  */
+static grpc_status_code verify_frame_header(size_t data_length,
+                                            unsigned char* header,
+                                            char** error_details) {
+  if (header == nullptr) {
+    maybe_copy_error_msg("Header is nullptr.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  size_t frame_length = load_32_le(header);
+  if (frame_length != kZeroCopyFrameMessageTypeFieldSize + data_length) {
+    maybe_copy_error_msg("Bad frame length.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  size_t message_type = load_32_le(header + kZeroCopyFrameLengthFieldSize);
+  if (message_type != kZeroCopyFrameMessageType) {
+    maybe_copy_error_msg("Unsupported message type.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  return GRPC_STATUS_OK;
+}
+
+/* --- alts_iovec_record_protocol methods implementation. --- */
+
+size_t alts_iovec_record_protocol_get_header_length() {
+  return kZeroCopyFrameHeaderSize;
+}
+
+size_t alts_iovec_record_protocol_get_tag_length(
+    const alts_iovec_record_protocol* rp) {
+  if (rp != nullptr) {
+    return rp->tag_length;
+  }
+  return 0;
+}
+
+size_t alts_iovec_record_protocol_max_unprotected_data_size(
+    const alts_iovec_record_protocol* rp, size_t max_protected_frame_size) {
+  if (rp == nullptr) {
+    return 0;
+  }
+  size_t overhead_bytes_size =
+      kZeroCopyFrameMessageTypeFieldSize + rp->tag_length;
+  if (max_protected_frame_size <= overhead_bytes_size) return 0;
+  return max_protected_frame_size - overhead_bytes_size;
+}
+
+grpc_status_code alts_iovec_record_protocol_integrity_only_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details) {
+  /* Input sanity checks.  */
+  if (rp == nullptr) {
+    maybe_copy_error_msg("Input iovec_record_protocol is nullptr.",
+                         error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (!rp->is_integrity_only) {
+    maybe_copy_error_msg(
+        "Integrity-only operations are not allowed for this object.",
+        error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (!rp->is_protect) {
+    maybe_copy_error_msg("Protect operations are not allowed for this object.",
+                         error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  grpc_status_code status =
+      ensure_header_and_tag_length(rp, header, tag, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Unprotected data should not be zero length.  */
+  size_t data_length =
+      get_total_length(unprotected_vec, unprotected_vec_length);
+  /* Sets frame header.  */
+  status = write_frame_header(data_length + rp->tag_length,
+                              static_cast<unsigned char*>(header.iov_base),
+                              error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Computes frame tag by calling AEAD crypter.  */
+  size_t bytes_written = 0;
+  status = gsec_aead_crypter_encrypt_iovec(
+      rp->crypter, alts_counter_get_counter(rp->ctr),
+      alts_counter_get_size(rp->ctr), unprotected_vec, unprotected_vec_length,
+      /* plaintext_vec = */ nullptr, /* plaintext_vec_length = */ 0, tag,
+      &bytes_written, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  if (bytes_written != rp->tag_length) {
+    maybe_copy_error_msg("Bytes written expects to be the same as tag length.",
+                         error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  /* Increments the crypter counter.  */
+  return increment_counter(rp->ctr, error_details);
+}
+
+grpc_status_code alts_iovec_record_protocol_integrity_only_unprotect(
+    alts_iovec_record_protocol* rp, const iovec_t* protected_vec,
+    size_t protected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details) {
+  /* Input sanity checks.  */
+  if (rp == nullptr) {
+    maybe_copy_error_msg("Input iovec_record_protocol is nullptr.",
+                         error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (!rp->is_integrity_only) {
+    maybe_copy_error_msg(
+        "Integrity-only operations are not allowed for this object.",
+        error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (rp->is_protect) {
+    maybe_copy_error_msg(
+        "Unprotect operations are not allowed for this object.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  grpc_status_code status =
+      ensure_header_and_tag_length(rp, header, tag, error_details);
+  if (status != GRPC_STATUS_OK) return status;
+  /* Protected data should not be zero length.  */
+  size_t data_length = get_total_length(protected_vec, protected_vec_length);
+  /* Verifies frame header.  */
+  status = verify_frame_header(data_length + rp->tag_length,
+                               static_cast<unsigned char*>(header.iov_base),
+                               error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Verifies frame tag by calling AEAD crypter.  */
+  iovec_t plaintext = {nullptr, 0};
+  size_t bytes_written = 0;
+  status = gsec_aead_crypter_decrypt_iovec(
+      rp->crypter, alts_counter_get_counter(rp->ctr),
+      alts_counter_get_size(rp->ctr), protected_vec, protected_vec_length, &tag,
+      1, plaintext, &bytes_written, error_details);
+  if (status != GRPC_STATUS_OK || bytes_written != 0) {
+    maybe_append_error_msg(" Frame tag verification failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  /* Increments the crypter counter.  */
+  return increment_counter(rp->ctr, error_details);
+}
+
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t protected_frame,
+    char** error_details) {
+  /* Input sanity checks.  */
+  if (rp == nullptr) {
+    maybe_copy_error_msg("Input iovec_record_protocol is nullptr.",
+                         error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (rp->is_integrity_only) {
+    maybe_copy_error_msg(
+        "Privacy-integrity operations are not allowed for this object.",
+        error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (!rp->is_protect) {
+    maybe_copy_error_msg("Protect operations are not allowed for this object.",
+                         error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  /* Unprotected data should not be zero length.  */
+  size_t data_length =
+      get_total_length(unprotected_vec, unprotected_vec_length);
+  /* Ensures protected frame iovec has sufficient size.  */
+  if (protected_frame.iov_base == nullptr) {
+    maybe_copy_error_msg("Protected frame is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (protected_frame.iov_len !=
+      alts_iovec_record_protocol_get_header_length() + data_length +
+          rp->tag_length) {
+    maybe_copy_error_msg("Protected frame size is incorrect.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  /* Writer frame header.  */
+  grpc_status_code status = write_frame_header(
+      data_length + rp->tag_length,
+      static_cast<unsigned char*>(protected_frame.iov_base), error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Encrypt unprotected data by calling AEAD crypter.  */
+  unsigned char* ciphertext_buffer =
+      static_cast<unsigned char*>(protected_frame.iov_base) +
+      alts_iovec_record_protocol_get_header_length();
+  iovec_t ciphertext = {ciphertext_buffer, data_length + rp->tag_length};
+  size_t bytes_written = 0;
+  status = gsec_aead_crypter_encrypt_iovec(
+      rp->crypter, alts_counter_get_counter(rp->ctr),
+      alts_counter_get_size(rp->ctr), /* aad_vec = */ nullptr,
+      /* aad_vec_length = */ 0, unprotected_vec, unprotected_vec_length,
+      ciphertext, &bytes_written, error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  if (bytes_written != data_length + rp->tag_length) {
+    maybe_copy_error_msg(
+        "Bytes written expects to be data length plus tag length.",
+        error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  /* Increments the crypter counter. */
+  return increment_counter(rp->ctr, error_details);
+}
+
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_unprotect(
+    alts_iovec_record_protocol* rp, iovec_t header,
+    const iovec_t* protected_vec, size_t protected_vec_length,
+    iovec_t unprotected_data, char** error_details) {
+  /* Input sanity checks.  */
+  if (rp == nullptr) {
+    maybe_copy_error_msg("Input iovec_record_protocol is nullptr.",
+                         error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (rp->is_integrity_only) {
+    maybe_copy_error_msg(
+        "Privacy-integrity operations are not allowed for this object.",
+        error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  if (rp->is_protect) {
+    maybe_copy_error_msg(
+        "Unprotect operations are not allowed for this object.", error_details);
+    return GRPC_STATUS_FAILED_PRECONDITION;
+  }
+  /* Protected data size should be no less than tag size.  */
+  size_t protected_data_length =
+      get_total_length(protected_vec, protected_vec_length);
+  if (protected_data_length < rp->tag_length) {
+    maybe_copy_error_msg(
+        "Protected data length should be more than the tag length.",
+        error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  /* Ensures header has sufficient size.  */
+  if (header.iov_base == nullptr) {
+    maybe_copy_error_msg("Header is nullptr.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  if (header.iov_len != alts_iovec_record_protocol_get_header_length()) {
+    maybe_copy_error_msg("Header length is incorrect.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  /* Ensures unprotected data iovec has sufficient size.  */
+  if (unprotected_data.iov_len != protected_data_length - rp->tag_length) {
+    maybe_copy_error_msg("Unprotected data size is incorrect.", error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  /* Verify frame header.  */
+  grpc_status_code status = verify_frame_header(
+      protected_data_length, static_cast<unsigned char*>(header.iov_base),
+      error_details);
+  if (status != GRPC_STATUS_OK) {
+    return status;
+  }
+  /* Decrypt protected data by calling AEAD crypter.  */
+  size_t bytes_written = 0;
+  status = gsec_aead_crypter_decrypt_iovec(
+      rp->crypter, alts_counter_get_counter(rp->ctr),
+      alts_counter_get_size(rp->ctr), /* aad_vec = */ nullptr,
+      /* aad_vec_length = */ 0, protected_vec, protected_vec_length,
+      unprotected_data, &bytes_written, error_details);
+  if (status != GRPC_STATUS_OK) {
+    maybe_append_error_msg(" Frame decryption failed.", error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  if (bytes_written != protected_data_length - rp->tag_length) {
+    maybe_copy_error_msg(
+        "Bytes written expects to be protected data length minus tag length.",
+        error_details);
+    return GRPC_STATUS_INTERNAL;
+  }
+  /* Increments the crypter counter. */
+  return increment_counter(rp->ctr, error_details);
+}
+
+grpc_status_code alts_iovec_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_integrity_only, bool is_protect, alts_iovec_record_protocol** rp,
+    char** error_details) {
+  if (crypter == nullptr || rp == nullptr) {
+    maybe_copy_error_msg(
+        "Invalid nullptr arguments to alts_iovec_record_protocol create.",
+        error_details);
+    return GRPC_STATUS_INVALID_ARGUMENT;
+  }
+  alts_iovec_record_protocol* impl = static_cast<alts_iovec_record_protocol*>(
+      gpr_zalloc(sizeof(alts_iovec_record_protocol)));
+  /* Gets counter length.  */
+  size_t counter_length = 0;
+  grpc_status_code status =
+      gsec_aead_crypter_nonce_length(crypter, &counter_length, error_details);
+  if (status != GRPC_STATUS_OK) {
+    goto cleanup;
+  }
+  /* Creates counters.  */
+  status =
+      alts_counter_create(is_protect ? !is_client : is_client, counter_length,
+                          overflow_size, &impl->ctr, error_details);
+  if (status != GRPC_STATUS_OK) {
+    goto cleanup;
+  }
+  /* Gets tag length.  */
+  status =
+      gsec_aead_crypter_tag_length(crypter, &impl->tag_length, error_details);
+  if (status != GRPC_STATUS_OK) {
+    goto cleanup;
+  }
+  impl->crypter = crypter;
+  impl->is_integrity_only = is_integrity_only;
+  impl->is_protect = is_protect;
+  *rp = impl;
+  return GRPC_STATUS_OK;
+cleanup:
+  alts_counter_destroy(impl->ctr);
+  gpr_free(impl);
+  return GRPC_STATUS_FAILED_PRECONDITION;
+}
+
+void alts_iovec_record_protocol_destroy(alts_iovec_record_protocol* rp) {
+  if (rp != nullptr) {
+    alts_counter_destroy(rp->ctr);
+    gsec_aead_crypter_destroy(rp->crypter);
+    gpr_free(rp);
+  }
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h
new file mode 100644
index 0000000..0b7d1bf
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h	
@@ -0,0 +1,199 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/alts/crypt/gsec.h"
+
+constexpr size_t kZeroCopyFrameMessageType = 0x06;
+constexpr size_t kZeroCopyFrameLengthFieldSize = 4;
+constexpr size_t kZeroCopyFrameMessageTypeFieldSize = 4;
+constexpr size_t kZeroCopyFrameHeaderSize =
+    kZeroCopyFrameLengthFieldSize + kZeroCopyFrameMessageTypeFieldSize;
+
+// Limit k on number of frames such that at most 2^(8 * k) frames can be sent.
+constexpr size_t kAltsRecordProtocolRekeyFrameLimit = 8;
+constexpr size_t kAltsRecordProtocolFrameLimit = 5;
+
+/* An implementation of alts record protocol. The API is thread-compatible. */
+
+typedef struct iovec iovec_t;
+
+typedef struct alts_iovec_record_protocol alts_iovec_record_protocol;
+
+/**
+ * This method gets the length of record protocol frame header.
+ */
+size_t alts_iovec_record_protocol_get_header_length();
+
+/**
+ * This method gets the length of record protocol frame tag.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ *
+ * On success, the method returns the length of record protocol frame tag.
+ * Otherwise, it returns zero.
+ */
+size_t alts_iovec_record_protocol_get_tag_length(
+    const alts_iovec_record_protocol* rp);
+
+/**
+ * This method returns maximum allowed unprotected data size, given maximum
+ * protected frame size.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - max_protected_frame_size: maximum protected frame size.
+ *
+ * On success, the method returns the maximum allowed unprotected data size.
+ * Otherwise, it returns zero.
+ */
+size_t alts_iovec_record_protocol_max_unprotected_data_size(
+    const alts_iovec_record_protocol* rp, size_t max_protected_frame_size);
+
+/**
+ * This method performs integrity-only protect operation on a
+ * alts_iovec_record_protocol instance, i.e., compute frame header and tag. The
+ * caller needs to allocate the memory for header and tag prior to calling this
+ * method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - unprotected_vec: an iovec array containing unprotected data.
+ * - unprotected_vec_length: the array length of unprotected_vec.
+ * - header: an iovec containing the output frame header.
+ * - tag: an iovec containing the output frame tag.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_integrity_only_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details);
+
+/**
+ * This method performs integrity-only unprotect operation on a
+ * alts_iovec_record_protocol instance, i.e., verify frame header and tag.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - protected_vec: an iovec array containing protected data.
+ * - protected_vec_length: the array length of protected_vec.
+ * - header: an iovec containing the frame header.
+ * - tag: an iovec containing the frame tag.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_integrity_only_unprotect(
+    alts_iovec_record_protocol* rp, const iovec_t* protected_vec,
+    size_t protected_vec_length, iovec_t header, iovec_t tag,
+    char** error_details);
+
+/**
+ * This method performs privacy-integrity protect operation on a
+ * alts_iovec_record_protocol instance, i.e., compute a protected frame. The
+ * caller needs to allocate the memory for the protected frame prior to calling
+ * this method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - unprotected_vec: an iovec array containing unprotected data.
+ * - unprotected_vec_length: the array length of unprotected_vec.
+ * - protected_frame: an iovec containing the output protected frame.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_protect(
+    alts_iovec_record_protocol* rp, const iovec_t* unprotected_vec,
+    size_t unprotected_vec_length, iovec_t protected_frame,
+    char** error_details);
+
+/**
+ * This method performs privacy-integrity unprotect operation on a
+ * alts_iovec_record_protocol instance given a full protected frame, i.e.,
+ * compute the unprotected data. The caller needs to allocated the memory for
+ * the unprotected data prior to calling this method.
+ *
+ * - rp: an alts_iovec_record_protocol instance.
+ * - header: an iovec containing the frame header.
+ * - protected_vec: an iovec array containing protected data including the tag.
+ * - protected_vec_length: the array length of protected_vec.
+ * - unprotected_data: an iovec containing the output unprotected data.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_privacy_integrity_unprotect(
+    alts_iovec_record_protocol* rp, iovec_t header,
+    const iovec_t* protected_vec, size_t protected_vec_length,
+    iovec_t unprotected_data, char** error_details);
+
+/**
+ * This method creates an alts_iovec_record_protocol instance, given a
+ * gsec_aead_crypter instance, a flag indicating if the created instance will be
+ * used at the client or server side, and a flag indicating if the created
+ * instance will be used for integrity-only mode or privacy-integrity mode. The
+ * ownership of gsec_aead_crypter instance is transferred to this new object.
+ *
+ * - crypter: a gsec_aead_crypter instance used to perform AEAD decryption.
+ * - overflow_size: overflow size of counter in bytes.
+ * - is_client: a flag indicating if the alts_iovec_record_protocol instance
+ *   will be used at the client or server side.
+ * - is_integrity_only: a flag indicating if the alts_iovec_record_protocol
+ *   instance will be used for integrity-only or privacy-integrity mode.
+ * - is_protect: a flag indicating if the alts_grpc_record_protocol instance
+ *   will be used for protect or unprotect.
+ * - rp: an alts_iovec_record_protocol instance to be returned from
+ *   the method.
+ * - error_details: a buffer containing an error message if the method does not
+ *   function correctly. It is OK to pass nullptr into error_details.
+ *
+ * On success, the method returns GRPC_STATUS_OK. Otherwise, it returns an
+ * error status code along with its details specified in error_details (if
+ * error_details is not nullptr).
+ */
+grpc_status_code alts_iovec_record_protocol_create(
+    gsec_aead_crypter* crypter, size_t overflow_size, bool is_client,
+    bool is_integrity_only, bool is_protect, alts_iovec_record_protocol** rp,
+    char** error_details);
+
+/**
+ * This method destroys an alts_iovec_record_protocol instance by de-allocating
+ * all of its occupied memory. A gsec_aead_crypter instance passed in at
+ * gsec_alts_crypter instance creation time will be destroyed in this method.
+ */
+void alts_iovec_record_protocol_destroy(alts_iovec_record_protocol* rp);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_IOVEC_RECORD_PROTOCOL_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.cc
new file mode 100644
index 0000000..0cdf974
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.cc	
@@ -0,0 +1,307 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/alts/crypt/gsec.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_integrity_only_record_protocol.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_privacy_integrity_record_protocol.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_grpc_record_protocol.h"
+#include "src/core/tsi/alts/zero_copy_frame_protector/alts_iovec_record_protocol.h"
+#include "src/core/tsi/transport_security_grpc.h"
+
+constexpr size_t kMinFrameLength = 1024;
+constexpr size_t kDefaultFrameLength = 16 * 1024;
+constexpr size_t kMaxFrameLength = 16 * 1024 * 1024;
+
+/**
+ * Main struct for alts_zero_copy_grpc_protector.
+ * We choose to have two alts_grpc_record_protocol objects and two sets of slice
+ * buffers: one for protect and the other for unprotect, so that protect and
+ * unprotect can be executed in parallel. Implementations of this object must be
+ * thread compatible.
+ */
+typedef struct alts_zero_copy_grpc_protector {
+  tsi_zero_copy_grpc_protector base;
+  alts_grpc_record_protocol* record_protocol;
+  alts_grpc_record_protocol* unrecord_protocol;
+  size_t max_protected_frame_size;
+  size_t max_unprotected_data_size;
+  grpc_slice_buffer unprotected_staging_sb;
+  grpc_slice_buffer protected_sb;
+  grpc_slice_buffer protected_staging_sb;
+  uint32_t parsed_frame_size;
+} alts_zero_copy_grpc_protector;
+
+/**
+ * Given a slice buffer, parses the first 4 bytes little-endian unsigned frame
+ * size and returns the total frame size including the frame field. Caller
+ * needs to make sure the input slice buffer has at least 4 bytes. Returns true
+ * on success and false on failure.
+ */
+static bool read_frame_size(const grpc_slice_buffer* sb,
+                            uint32_t* total_frame_size) {
+  if (sb == nullptr || sb->length < kZeroCopyFrameLengthFieldSize) {
+    return false;
+  }
+  uint8_t frame_size_buffer[kZeroCopyFrameLengthFieldSize];
+  uint8_t* buf = frame_size_buffer;
+  /* Copies the first 4 bytes to a temporary buffer.  */
+  size_t remaining = kZeroCopyFrameLengthFieldSize;
+  for (size_t i = 0; i < sb->count; i++) {
+    size_t slice_length = GRPC_SLICE_LENGTH(sb->slices[i]);
+    if (remaining <= slice_length) {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), remaining);
+      remaining = 0;
+      break;
+    } else {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), slice_length);
+      buf += slice_length;
+      remaining -= slice_length;
+    }
+  }
+  GPR_ASSERT(remaining == 0);
+  /* Gets little-endian frame size.  */
+  uint32_t frame_size = (((uint32_t)frame_size_buffer[3]) << 24) |
+                        (((uint32_t)frame_size_buffer[2]) << 16) |
+                        (((uint32_t)frame_size_buffer[1]) << 8) |
+                        ((uint32_t)frame_size_buffer[0]);
+  if (frame_size > kMaxFrameLength) {
+    gpr_log(GPR_ERROR, "Frame size is larger than maximum frame size");
+    return false;
+  }
+  /* Returns frame size including frame length field.  */
+  *total_frame_size =
+      static_cast<uint32_t>(frame_size + kZeroCopyFrameLengthFieldSize);
+  return true;
+}
+
+/**
+ * Creates an alts_grpc_record_protocol object, given key, key size, and flags
+ * to indicate whether the record_protocol object uses the rekeying AEAD,
+ * whether the object is for client or server, whether the object is for
+ * integrity-only or privacy-integrity mode, and whether the object is used
+ * for protect or unprotect.
+ */
+static tsi_result create_alts_grpc_record_protocol(
+    const uint8_t* key, size_t key_size, bool is_rekey, bool is_client,
+    bool is_integrity_only, bool is_protect, bool enable_extra_copy,
+    alts_grpc_record_protocol** record_protocol) {
+  if (key == nullptr || record_protocol == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  grpc_status_code status;
+  gsec_aead_crypter* crypter = nullptr;
+  char* error_details = nullptr;
+  status = gsec_aes_gcm_aead_crypter_create(key, key_size, kAesGcmNonceLength,
+                                            kAesGcmTagLength, is_rekey,
+                                            &crypter, &error_details);
+  if (status != GRPC_STATUS_OK) {
+    gpr_log(GPR_ERROR, "Failed to create AEAD crypter, %s", error_details);
+    gpr_free(error_details);
+    return TSI_INTERNAL_ERROR;
+  }
+  size_t overflow_limit = is_rekey ? kAltsRecordProtocolRekeyFrameLimit
+                                   : kAltsRecordProtocolFrameLimit;
+  /* Creates alts_grpc_record_protocol with AEAD crypter ownership transferred.
+   */
+  tsi_result result = is_integrity_only
+                          ? alts_grpc_integrity_only_record_protocol_create(
+                                crypter, overflow_limit, is_client, is_protect,
+                                enable_extra_copy, record_protocol)
+                          : alts_grpc_privacy_integrity_record_protocol_create(
+                                crypter, overflow_limit, is_client, is_protect,
+                                record_protocol);
+  if (result != TSI_OK) {
+    gsec_aead_crypter_destroy(crypter);
+    return result;
+  }
+  return TSI_OK;
+}
+
+/* --- tsi_zero_copy_grpc_protector methods implementation. --- */
+
+static tsi_result alts_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid nullptr arguments to zero-copy grpc protect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_zero_copy_grpc_protector* protector =
+      reinterpret_cast<alts_zero_copy_grpc_protector*>(self);
+  /* Calls alts_grpc_record_protocol protect repeatly.  */
+  while (unprotected_slices->length > protector->max_unprotected_data_size) {
+    grpc_slice_buffer_move_first(unprotected_slices,
+                                 protector->max_unprotected_data_size,
+                                 &protector->unprotected_staging_sb);
+    tsi_result status = alts_grpc_record_protocol_protect(
+        protector->record_protocol, &protector->unprotected_staging_sb,
+        protected_slices);
+    if (status != TSI_OK) {
+      return status;
+    }
+  }
+  return alts_grpc_record_protocol_protect(
+      protector->record_protocol, unprotected_slices, protected_slices);
+}
+
+static tsi_result alts_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to zero-copy grpc unprotect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  alts_zero_copy_grpc_protector* protector =
+      reinterpret_cast<alts_zero_copy_grpc_protector*>(self);
+  grpc_slice_buffer_move_into(protected_slices, &protector->protected_sb);
+  /* Keep unprotecting each frame if possible.  */
+  while (protector->protected_sb.length >= kZeroCopyFrameLengthFieldSize) {
+    if (protector->parsed_frame_size == 0) {
+      /* We have not parsed frame size yet. Parses frame size.  */
+      if (!read_frame_size(&protector->protected_sb,
+                           &protector->parsed_frame_size)) {
+        grpc_slice_buffer_reset_and_unref_internal(&protector->protected_sb);
+        return TSI_DATA_CORRUPTED;
+      }
+    }
+    if (protector->protected_sb.length < protector->parsed_frame_size) break;
+    /* At this point, protected_sb contains at least one frame of data.  */
+    tsi_result status;
+    if (protector->protected_sb.length == protector->parsed_frame_size) {
+      status = alts_grpc_record_protocol_unprotect(protector->unrecord_protocol,
+                                                   &protector->protected_sb,
+                                                   unprotected_slices);
+    } else {
+      grpc_slice_buffer_move_first(&protector->protected_sb,
+                                   protector->parsed_frame_size,
+                                   &protector->protected_staging_sb);
+      status = alts_grpc_record_protocol_unprotect(
+          protector->unrecord_protocol, &protector->protected_staging_sb,
+          unprotected_slices);
+    }
+    protector->parsed_frame_size = 0;
+    if (status != TSI_OK) {
+      grpc_slice_buffer_reset_and_unref_internal(&protector->protected_sb);
+      return status;
+    }
+  }
+  return TSI_OK;
+}
+
+static void alts_zero_copy_grpc_protector_destroy(
+    tsi_zero_copy_grpc_protector* self) {
+  if (self == nullptr) {
+    return;
+  }
+  alts_zero_copy_grpc_protector* protector =
+      reinterpret_cast<alts_zero_copy_grpc_protector*>(self);
+  alts_grpc_record_protocol_destroy(protector->record_protocol);
+  alts_grpc_record_protocol_destroy(protector->unrecord_protocol);
+  grpc_slice_buffer_destroy_internal(&protector->unprotected_staging_sb);
+  grpc_slice_buffer_destroy_internal(&protector->protected_sb);
+  grpc_slice_buffer_destroy_internal(&protector->protected_staging_sb);
+  gpr_free(protector);
+}
+
+static tsi_result alts_zero_copy_grpc_protector_max_frame_size(
+    tsi_zero_copy_grpc_protector* self, size_t* max_frame_size) {
+  if (self == nullptr || max_frame_size == nullptr) return TSI_INVALID_ARGUMENT;
+  alts_zero_copy_grpc_protector* protector =
+      reinterpret_cast<alts_zero_copy_grpc_protector*>(self);
+  *max_frame_size = protector->max_protected_frame_size;
+  return TSI_OK;
+}
+
+static const tsi_zero_copy_grpc_protector_vtable
+    alts_zero_copy_grpc_protector_vtable = {
+        alts_zero_copy_grpc_protector_protect,
+        alts_zero_copy_grpc_protector_unprotect,
+        alts_zero_copy_grpc_protector_destroy,
+        alts_zero_copy_grpc_protector_max_frame_size};
+
+tsi_result alts_zero_copy_grpc_protector_create(
+    const uint8_t* key, size_t key_size, bool is_rekey, bool is_client,
+    bool is_integrity_only, bool enable_extra_copy,
+    size_t* max_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector) {
+  if (grpc_core::ExecCtx::Get() == nullptr || key == nullptr ||
+      protector == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to alts_zero_copy_grpc_protector create.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* Creates alts_zero_copy_protector.  */
+  alts_zero_copy_grpc_protector* impl =
+      static_cast<alts_zero_copy_grpc_protector*>(
+          gpr_zalloc(sizeof(alts_zero_copy_grpc_protector)));
+  /* Creates alts_grpc_record_protocol objects.  */
+  tsi_result status = create_alts_grpc_record_protocol(
+      key, key_size, is_rekey, is_client, is_integrity_only,
+      /*is_protect=*/true, enable_extra_copy, &impl->record_protocol);
+  if (status == TSI_OK) {
+    status = create_alts_grpc_record_protocol(
+        key, key_size, is_rekey, is_client, is_integrity_only,
+        /*is_protect=*/false, enable_extra_copy, &impl->unrecord_protocol);
+    if (status == TSI_OK) {
+      /* Sets maximum frame size.  */
+      size_t max_protected_frame_size_to_set = kDefaultFrameLength;
+      if (max_protected_frame_size != nullptr) {
+        *max_protected_frame_size =
+            GPR_MIN(*max_protected_frame_size, kMaxFrameLength);
+        *max_protected_frame_size =
+            GPR_MAX(*max_protected_frame_size, kMinFrameLength);
+        max_protected_frame_size_to_set = *max_protected_frame_size;
+      }
+      impl->max_protected_frame_size = max_protected_frame_size_to_set;
+      impl->max_unprotected_data_size =
+          alts_grpc_record_protocol_max_unprotected_data_size(
+              impl->record_protocol, max_protected_frame_size_to_set);
+      GPR_ASSERT(impl->max_unprotected_data_size > 0);
+      /* Allocates internal slice buffers.  */
+      grpc_slice_buffer_init(&impl->unprotected_staging_sb);
+      grpc_slice_buffer_init(&impl->protected_sb);
+      grpc_slice_buffer_init(&impl->protected_staging_sb);
+      impl->parsed_frame_size = 0;
+      impl->base.vtable = &alts_zero_copy_grpc_protector_vtable;
+      *protector = &impl->base;
+      return TSI_OK;
+    }
+  }
+
+  /* Cleanup if create failed.  */
+  alts_grpc_record_protocol_destroy(impl->record_protocol);
+  alts_grpc_record_protocol_destroy(impl->unrecord_protocol);
+  gpr_free(impl);
+  return TSI_INTERNAL_ERROR;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h
new file mode 100644
index 0000000..515c27e
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
+#define GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/tsi/transport_security_grpc.h"
+
+/**
+ * This method creates an ALTS zero-copy grpc protector.
+ *
+ * - key: a symmetric key used to seal/unseal frames.
+ * - key_size: the size of symmetric key.
+ * - is_rekey: use rekeying AEAD crypter.
+ * - is_client: a flag indicating if the protector will be used at client or
+ *   server side.
+ * - is_integrity_only: a flag indicating if the protector instance will be
+ *   used for integrity-only or privacy-integrity mode.
+ * - enable_extra_copy: a flag indicating if the protector instance does one
+ *   extra memory copy during the protect operation for integrity_only mode.
+ *   For the unprotect operation, it is still zero-copy. If application intends
+ *   to modify the data buffer after the protect operation, we can turn on this
+ *   mode to avoid integrity check failure.
+ * - max_protected_frame_size: an in/out parameter indicating max frame size
+ *   to be used by the protector. If it is nullptr, the default frame size will
+ *   be used. Otherwise, the provided frame size will be adjusted (if not
+ *   falling into a valid frame range) and used.
+ * - protector: a pointer to the zero-copy protector returned from the method.
+ *
+ * This method returns TSI_OK on success or a specific error code otherwise.
+ */
+tsi_result alts_zero_copy_grpc_protector_create(
+    const uint8_t* key, size_t key_size, bool is_rekey, bool is_client,
+    bool is_integrity_only, bool enable_extra_copy,
+    size_t* max_protected_frame_size, tsi_zero_copy_grpc_protector** protector);
+
+#endif /* GRPC_CORE_TSI_ALTS_ZERO_COPY_FRAME_PROTECTOR_ALTS_ZERO_COPY_GRPC_PROTECTOR_H \
+        */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.cc
new file mode 100644
index 0000000..c34aa9c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.cc	
@@ -0,0 +1,794 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/fake_transport_security.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/transport_security_grpc.h"
+
+/* --- Constants. ---*/
+#define TSI_FAKE_FRAME_HEADER_SIZE 4
+#define TSI_FAKE_FRAME_INITIAL_ALLOCATED_SIZE 64
+#define TSI_FAKE_DEFAULT_FRAME_SIZE 16384
+#define TSI_FAKE_HANDSHAKER_OUTGOING_BUFFER_INITIAL_SIZE 256
+
+/* --- Structure definitions. ---*/
+
+/* a frame is encoded like this:
+   | size |     data    |
+   where the size field value is the size of the size field plus the size of
+   the data encoded in little endian on 4 bytes.  */
+typedef struct {
+  unsigned char* data;
+  size_t size;
+  size_t allocated_size;
+  size_t offset;
+  int needs_draining;
+} tsi_fake_frame;
+
+typedef enum {
+  TSI_FAKE_CLIENT_INIT = 0,
+  TSI_FAKE_SERVER_INIT = 1,
+  TSI_FAKE_CLIENT_FINISHED = 2,
+  TSI_FAKE_SERVER_FINISHED = 3,
+  TSI_FAKE_HANDSHAKE_MESSAGE_MAX = 4
+} tsi_fake_handshake_message;
+
+typedef struct {
+  tsi_handshaker base;
+  int is_client;
+  tsi_fake_handshake_message next_message_to_send;
+  int needs_incoming_message;
+  tsi_fake_frame incoming_frame;
+  tsi_fake_frame outgoing_frame;
+  unsigned char* outgoing_bytes_buffer;
+  size_t outgoing_bytes_buffer_size;
+  tsi_result result;
+} tsi_fake_handshaker;
+
+typedef struct {
+  tsi_frame_protector base;
+  tsi_fake_frame protect_frame;
+  tsi_fake_frame unprotect_frame;
+  size_t max_frame_size;
+} tsi_fake_frame_protector;
+
+typedef struct {
+  tsi_zero_copy_grpc_protector base;
+  grpc_slice_buffer header_sb;
+  grpc_slice_buffer protected_sb;
+  size_t max_frame_size;
+  size_t parsed_frame_size;
+} tsi_fake_zero_copy_grpc_protector;
+
+/* --- Utils. ---*/
+
+static const char* tsi_fake_handshake_message_strings[] = {
+    "CLIENT_INIT", "SERVER_INIT", "CLIENT_FINISHED", "SERVER_FINISHED"};
+
+static const char* tsi_fake_handshake_message_to_string(int msg) {
+  if (msg < 0 || msg >= TSI_FAKE_HANDSHAKE_MESSAGE_MAX) {
+    gpr_log(GPR_ERROR, "Invalid message %d", msg);
+    return "UNKNOWN";
+  }
+  return tsi_fake_handshake_message_strings[msg];
+}
+
+static tsi_result tsi_fake_handshake_message_from_string(
+    const char* msg_string, tsi_fake_handshake_message* msg) {
+  for (int i = 0; i < TSI_FAKE_HANDSHAKE_MESSAGE_MAX; i++) {
+    if (strncmp(msg_string, tsi_fake_handshake_message_strings[i],
+                strlen(tsi_fake_handshake_message_strings[i])) == 0) {
+      *msg = static_cast<tsi_fake_handshake_message>(i);
+      return TSI_OK;
+    }
+  }
+  gpr_log(GPR_ERROR, "Invalid handshake message.");
+  return TSI_DATA_CORRUPTED;
+}
+
+static uint32_t load32_little_endian(const unsigned char* buf) {
+  return (static_cast<uint32_t>(buf[0]) | static_cast<uint32_t>(buf[1] << 8) |
+          static_cast<uint32_t>(buf[2] << 16) |
+          static_cast<uint32_t>(buf[3] << 24));
+}
+
+static void store32_little_endian(uint32_t value, unsigned char* buf) {
+  buf[3] = static_cast<unsigned char>((value >> 24) & 0xFF);
+  buf[2] = static_cast<unsigned char>((value >> 16) & 0xFF);
+  buf[1] = static_cast<unsigned char>((value >> 8) & 0xFF);
+  buf[0] = static_cast<unsigned char>((value)&0xFF);
+}
+
+static uint32_t read_frame_size(const grpc_slice_buffer* sb) {
+  GPR_ASSERT(sb != nullptr && sb->length >= TSI_FAKE_FRAME_HEADER_SIZE);
+  uint8_t frame_size_buffer[TSI_FAKE_FRAME_HEADER_SIZE];
+  uint8_t* buf = frame_size_buffer;
+  /* Copies the first 4 bytes to a temporary buffer.  */
+  size_t remaining = TSI_FAKE_FRAME_HEADER_SIZE;
+  for (size_t i = 0; i < sb->count; i++) {
+    size_t slice_length = GRPC_SLICE_LENGTH(sb->slices[i]);
+    if (remaining <= slice_length) {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), remaining);
+      remaining = 0;
+      break;
+    } else {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), slice_length);
+      buf += slice_length;
+      remaining -= slice_length;
+    }
+  }
+  GPR_ASSERT(remaining == 0);
+  return load32_little_endian(frame_size_buffer);
+}
+
+static void tsi_fake_frame_reset(tsi_fake_frame* frame, int needs_draining) {
+  frame->offset = 0;
+  frame->needs_draining = needs_draining;
+  if (!needs_draining) frame->size = 0;
+}
+
+/* Checks if the frame's allocated size is at least frame->size, and reallocs
+ * more memory if necessary. */
+static void tsi_fake_frame_ensure_size(tsi_fake_frame* frame) {
+  if (frame->data == nullptr) {
+    frame->allocated_size = frame->size;
+    frame->data =
+        static_cast<unsigned char*>(gpr_malloc(frame->allocated_size));
+  } else if (frame->size > frame->allocated_size) {
+    unsigned char* new_data =
+        static_cast<unsigned char*>(gpr_realloc(frame->data, frame->size));
+    frame->data = new_data;
+    frame->allocated_size = frame->size;
+  }
+}
+
+/* Decodes the serialized fake frame contained in incoming_bytes, and fills
+ * frame with the contents of the decoded frame.
+ * This method should not be called if frame->needs_framing is not 0.  */
+static tsi_result tsi_fake_frame_decode(const unsigned char* incoming_bytes,
+                                        size_t* incoming_bytes_size,
+                                        tsi_fake_frame* frame) {
+  size_t available_size = *incoming_bytes_size;
+  size_t to_read_size = 0;
+  const unsigned char* bytes_cursor = incoming_bytes;
+
+  if (frame->needs_draining) return TSI_INTERNAL_ERROR;
+  if (frame->data == nullptr) {
+    frame->allocated_size = TSI_FAKE_FRAME_INITIAL_ALLOCATED_SIZE;
+    frame->data =
+        static_cast<unsigned char*>(gpr_malloc(frame->allocated_size));
+  }
+
+  if (frame->offset < TSI_FAKE_FRAME_HEADER_SIZE) {
+    to_read_size = TSI_FAKE_FRAME_HEADER_SIZE - frame->offset;
+    if (to_read_size > available_size) {
+      /* Just fill what we can and exit. */
+      memcpy(frame->data + frame->offset, bytes_cursor, available_size);
+      bytes_cursor += available_size;
+      frame->offset += available_size;
+      *incoming_bytes_size = static_cast<size_t>(bytes_cursor - incoming_bytes);
+      return TSI_INCOMPLETE_DATA;
+    }
+    memcpy(frame->data + frame->offset, bytes_cursor, to_read_size);
+    bytes_cursor += to_read_size;
+    frame->offset += to_read_size;
+    available_size -= to_read_size;
+    frame->size = load32_little_endian(frame->data);
+    tsi_fake_frame_ensure_size(frame);
+  }
+
+  to_read_size = frame->size - frame->offset;
+  if (to_read_size > available_size) {
+    memcpy(frame->data + frame->offset, bytes_cursor, available_size);
+    frame->offset += available_size;
+    bytes_cursor += available_size;
+    *incoming_bytes_size = static_cast<size_t>(bytes_cursor - incoming_bytes);
+    return TSI_INCOMPLETE_DATA;
+  }
+  memcpy(frame->data + frame->offset, bytes_cursor, to_read_size);
+  bytes_cursor += to_read_size;
+  *incoming_bytes_size = static_cast<size_t>(bytes_cursor - incoming_bytes);
+  tsi_fake_frame_reset(frame, 1 /* needs_draining */);
+  return TSI_OK;
+}
+
+/* Encodes a fake frame into its wire format and places the result in
+ * outgoing_bytes. outgoing_bytes_size indicates the size of the encoded frame.
+ * This method should not be called if frame->needs_framing is 0.  */
+static tsi_result tsi_fake_frame_encode(unsigned char* outgoing_bytes,
+                                        size_t* outgoing_bytes_size,
+                                        tsi_fake_frame* frame) {
+  size_t to_write_size = frame->size - frame->offset;
+  if (!frame->needs_draining) return TSI_INTERNAL_ERROR;
+  if (*outgoing_bytes_size < to_write_size) {
+    memcpy(outgoing_bytes, frame->data + frame->offset, *outgoing_bytes_size);
+    frame->offset += *outgoing_bytes_size;
+    return TSI_INCOMPLETE_DATA;
+  }
+  memcpy(outgoing_bytes, frame->data + frame->offset, to_write_size);
+  *outgoing_bytes_size = to_write_size;
+  tsi_fake_frame_reset(frame, 0 /* needs_draining */);
+  return TSI_OK;
+}
+
+/* Sets the payload of a fake frame to contain the given data blob, where
+ * data_size indicates the size of data. */
+static tsi_result tsi_fake_frame_set_data(unsigned char* data, size_t data_size,
+                                          tsi_fake_frame* frame) {
+  frame->offset = 0;
+  frame->size = data_size + TSI_FAKE_FRAME_HEADER_SIZE;
+  tsi_fake_frame_ensure_size(frame);
+  store32_little_endian(static_cast<uint32_t>(frame->size), frame->data);
+  memcpy(frame->data + TSI_FAKE_FRAME_HEADER_SIZE, data, data_size);
+  tsi_fake_frame_reset(frame, 1 /* needs draining */);
+  return TSI_OK;
+}
+
+/* Destroys the contents of a fake frame. */
+static void tsi_fake_frame_destruct(tsi_fake_frame* frame) {
+  if (frame->data != nullptr) gpr_free(frame->data);
+}
+
+/* --- tsi_frame_protector methods implementation. ---*/
+
+static tsi_result fake_protector_protect(tsi_frame_protector* self,
+                                         const unsigned char* unprotected_bytes,
+                                         size_t* unprotected_bytes_size,
+                                         unsigned char* protected_output_frames,
+                                         size_t* protected_output_frames_size) {
+  tsi_result result = TSI_OK;
+  tsi_fake_frame_protector* impl =
+      reinterpret_cast<tsi_fake_frame_protector*>(self);
+  unsigned char frame_header[TSI_FAKE_FRAME_HEADER_SIZE];
+  tsi_fake_frame* frame = &impl->protect_frame;
+  size_t saved_output_size = *protected_output_frames_size;
+  size_t drained_size = 0;
+  size_t* num_bytes_written = protected_output_frames_size;
+  *num_bytes_written = 0;
+
+  /* Try to drain first. */
+  if (frame->needs_draining) {
+    drained_size = saved_output_size - *num_bytes_written;
+    result =
+        tsi_fake_frame_encode(protected_output_frames, &drained_size, frame);
+    *num_bytes_written += drained_size;
+    protected_output_frames += drained_size;
+    if (result != TSI_OK) {
+      if (result == TSI_INCOMPLETE_DATA) {
+        *unprotected_bytes_size = 0;
+        result = TSI_OK;
+      }
+      return result;
+    }
+  }
+
+  /* Now process the unprotected_bytes. */
+  if (frame->needs_draining) return TSI_INTERNAL_ERROR;
+  if (frame->size == 0) {
+    /* New frame, create a header. */
+    size_t written_in_frame_size = 0;
+    store32_little_endian(static_cast<uint32_t>(impl->max_frame_size),
+                          frame_header);
+    written_in_frame_size = TSI_FAKE_FRAME_HEADER_SIZE;
+    result = tsi_fake_frame_decode(frame_header, &written_in_frame_size, frame);
+    if (result != TSI_INCOMPLETE_DATA) {
+      gpr_log(GPR_ERROR, "tsi_fake_frame_decode returned %s",
+              tsi_result_to_string(result));
+      return result;
+    }
+  }
+  result =
+      tsi_fake_frame_decode(unprotected_bytes, unprotected_bytes_size, frame);
+  if (result != TSI_OK) {
+    if (result == TSI_INCOMPLETE_DATA) result = TSI_OK;
+    return result;
+  }
+
+  /* Try to drain again. */
+  if (!frame->needs_draining) return TSI_INTERNAL_ERROR;
+  if (frame->offset != 0) return TSI_INTERNAL_ERROR;
+  drained_size = saved_output_size - *num_bytes_written;
+  result = tsi_fake_frame_encode(protected_output_frames, &drained_size, frame);
+  *num_bytes_written += drained_size;
+  if (result == TSI_INCOMPLETE_DATA) result = TSI_OK;
+  return result;
+}
+
+static tsi_result fake_protector_protect_flush(
+    tsi_frame_protector* self, unsigned char* protected_output_frames,
+    size_t* protected_output_frames_size, size_t* still_pending_size) {
+  tsi_result result = TSI_OK;
+  tsi_fake_frame_protector* impl =
+      reinterpret_cast<tsi_fake_frame_protector*>(self);
+  tsi_fake_frame* frame = &impl->protect_frame;
+  if (!frame->needs_draining) {
+    /* Create a short frame. */
+    frame->size = frame->offset;
+    frame->offset = 0;
+    frame->needs_draining = 1;
+    store32_little_endian(static_cast<uint32_t>(frame->size),
+                          frame->data); /* Overwrite header. */
+  }
+  result = tsi_fake_frame_encode(protected_output_frames,
+                                 protected_output_frames_size, frame);
+  if (result == TSI_INCOMPLETE_DATA) result = TSI_OK;
+  *still_pending_size = frame->size - frame->offset;
+  return result;
+}
+
+static tsi_result fake_protector_unprotect(
+    tsi_frame_protector* self, const unsigned char* protected_frames_bytes,
+    size_t* protected_frames_bytes_size, unsigned char* unprotected_bytes,
+    size_t* unprotected_bytes_size) {
+  tsi_result result = TSI_OK;
+  tsi_fake_frame_protector* impl =
+      reinterpret_cast<tsi_fake_frame_protector*>(self);
+  tsi_fake_frame* frame = &impl->unprotect_frame;
+  size_t saved_output_size = *unprotected_bytes_size;
+  size_t drained_size = 0;
+  size_t* num_bytes_written = unprotected_bytes_size;
+  *num_bytes_written = 0;
+
+  /* Try to drain first. */
+  if (frame->needs_draining) {
+    /* Go past the header if needed. */
+    if (frame->offset == 0) frame->offset = TSI_FAKE_FRAME_HEADER_SIZE;
+    drained_size = saved_output_size - *num_bytes_written;
+    result = tsi_fake_frame_encode(unprotected_bytes, &drained_size, frame);
+    unprotected_bytes += drained_size;
+    *num_bytes_written += drained_size;
+    if (result != TSI_OK) {
+      if (result == TSI_INCOMPLETE_DATA) {
+        *protected_frames_bytes_size = 0;
+        result = TSI_OK;
+      }
+      return result;
+    }
+  }
+
+  /* Now process the protected_bytes. */
+  if (frame->needs_draining) return TSI_INTERNAL_ERROR;
+  result = tsi_fake_frame_decode(protected_frames_bytes,
+                                 protected_frames_bytes_size, frame);
+  if (result != TSI_OK) {
+    if (result == TSI_INCOMPLETE_DATA) result = TSI_OK;
+    return result;
+  }
+
+  /* Try to drain again. */
+  if (!frame->needs_draining) return TSI_INTERNAL_ERROR;
+  if (frame->offset != 0) return TSI_INTERNAL_ERROR;
+  frame->offset = TSI_FAKE_FRAME_HEADER_SIZE; /* Go past the header. */
+  drained_size = saved_output_size - *num_bytes_written;
+  result = tsi_fake_frame_encode(unprotected_bytes, &drained_size, frame);
+  *num_bytes_written += drained_size;
+  if (result == TSI_INCOMPLETE_DATA) result = TSI_OK;
+  return result;
+}
+
+static void fake_protector_destroy(tsi_frame_protector* self) {
+  tsi_fake_frame_protector* impl =
+      reinterpret_cast<tsi_fake_frame_protector*>(self);
+  tsi_fake_frame_destruct(&impl->protect_frame);
+  tsi_fake_frame_destruct(&impl->unprotect_frame);
+  gpr_free(self);
+}
+
+static const tsi_frame_protector_vtable frame_protector_vtable = {
+    fake_protector_protect,
+    fake_protector_protect_flush,
+    fake_protector_unprotect,
+    fake_protector_destroy,
+};
+
+/* --- tsi_zero_copy_grpc_protector methods implementation. ---*/
+
+static tsi_result fake_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_fake_zero_copy_grpc_protector* impl =
+      reinterpret_cast<tsi_fake_zero_copy_grpc_protector*>(self);
+  /* Protects each frame. */
+  while (unprotected_slices->length > 0) {
+    size_t frame_length =
+        GPR_MIN(impl->max_frame_size,
+                unprotected_slices->length + TSI_FAKE_FRAME_HEADER_SIZE);
+    grpc_slice slice = GRPC_SLICE_MALLOC(TSI_FAKE_FRAME_HEADER_SIZE);
+    store32_little_endian(static_cast<uint32_t>(frame_length),
+                          GRPC_SLICE_START_PTR(slice));
+    grpc_slice_buffer_add(protected_slices, slice);
+    size_t data_length = frame_length - TSI_FAKE_FRAME_HEADER_SIZE;
+    grpc_slice_buffer_move_first(unprotected_slices, data_length,
+                                 protected_slices);
+  }
+  return TSI_OK;
+}
+
+static tsi_result fake_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_fake_zero_copy_grpc_protector* impl =
+      reinterpret_cast<tsi_fake_zero_copy_grpc_protector*>(self);
+  grpc_slice_buffer_move_into(protected_slices, &impl->protected_sb);
+  /* Unprotect each frame, if we get a full frame. */
+  while (impl->protected_sb.length >= TSI_FAKE_FRAME_HEADER_SIZE) {
+    if (impl->parsed_frame_size == 0) {
+      impl->parsed_frame_size = read_frame_size(&impl->protected_sb);
+      if (impl->parsed_frame_size <= 4) {
+        gpr_log(GPR_ERROR, "Invalid frame size.");
+        return TSI_DATA_CORRUPTED;
+      }
+    }
+    /* If we do not have a full frame, return with OK status. */
+    if (impl->protected_sb.length < impl->parsed_frame_size) break;
+    /* Strips header bytes. */
+    grpc_slice_buffer_move_first(&impl->protected_sb,
+                                 TSI_FAKE_FRAME_HEADER_SIZE, &impl->header_sb);
+    /* Moves data to unprotected slices. */
+    grpc_slice_buffer_move_first(
+        &impl->protected_sb,
+        impl->parsed_frame_size - TSI_FAKE_FRAME_HEADER_SIZE,
+        unprotected_slices);
+    impl->parsed_frame_size = 0;
+    grpc_slice_buffer_reset_and_unref_internal(&impl->header_sb);
+  }
+  return TSI_OK;
+}
+
+static void fake_zero_copy_grpc_protector_destroy(
+    tsi_zero_copy_grpc_protector* self) {
+  if (self == nullptr) return;
+  tsi_fake_zero_copy_grpc_protector* impl =
+      reinterpret_cast<tsi_fake_zero_copy_grpc_protector*>(self);
+  grpc_slice_buffer_destroy_internal(&impl->header_sb);
+  grpc_slice_buffer_destroy_internal(&impl->protected_sb);
+  gpr_free(impl);
+}
+
+static const tsi_zero_copy_grpc_protector_vtable
+    zero_copy_grpc_protector_vtable = {
+        fake_zero_copy_grpc_protector_protect,
+        fake_zero_copy_grpc_protector_unprotect,
+        fake_zero_copy_grpc_protector_destroy,
+        nullptr /* fake_zero_copy_grpc_protector_max_frame_size */
+};
+
+/* --- tsi_handshaker_result methods implementation. ---*/
+
+typedef struct {
+  tsi_handshaker_result base;
+  unsigned char* unused_bytes;
+  size_t unused_bytes_size;
+} fake_handshaker_result;
+
+static tsi_result fake_handshaker_result_extract_peer(
+    const tsi_handshaker_result* self, tsi_peer* peer) {
+  /* Construct a tsi_peer with 1 property: certificate type, security_level. */
+  tsi_result result = tsi_construct_peer(2, peer);
+  if (result != TSI_OK) return result;
+  result = tsi_construct_string_peer_property_from_cstring(
+      TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_FAKE_CERTIFICATE_TYPE,
+      &peer->properties[0]);
+  if (result != TSI_OK) tsi_peer_destruct(peer);
+  result = tsi_construct_string_peer_property_from_cstring(
+      TSI_SECURITY_LEVEL_PEER_PROPERTY,
+      tsi_security_level_to_string(TSI_SECURITY_NONE), &peer->properties[1]);
+  if (result != TSI_OK) tsi_peer_destruct(peer);
+  return result;
+}
+
+static tsi_result fake_handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* /*self*/,
+    size_t* max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector) {
+  *protector =
+      tsi_create_fake_zero_copy_grpc_protector(max_output_protected_frame_size);
+  return TSI_OK;
+}
+
+static tsi_result fake_handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* /*self*/,
+    size_t* max_output_protected_frame_size, tsi_frame_protector** protector) {
+  *protector = tsi_create_fake_frame_protector(max_output_protected_frame_size);
+  return TSI_OK;
+}
+
+static tsi_result fake_handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* bytes_size) {
+  fake_handshaker_result* result = (fake_handshaker_result*)self;
+  *bytes_size = result->unused_bytes_size;
+  *bytes = result->unused_bytes;
+  return TSI_OK;
+}
+
+static void fake_handshaker_result_destroy(tsi_handshaker_result* self) {
+  fake_handshaker_result* result =
+      reinterpret_cast<fake_handshaker_result*>(self);
+  gpr_free(result->unused_bytes);
+  gpr_free(self);
+}
+
+static const tsi_handshaker_result_vtable handshaker_result_vtable = {
+    fake_handshaker_result_extract_peer,
+    fake_handshaker_result_create_zero_copy_grpc_protector,
+    fake_handshaker_result_create_frame_protector,
+    fake_handshaker_result_get_unused_bytes,
+    fake_handshaker_result_destroy,
+};
+
+static tsi_result fake_handshaker_result_create(
+    const unsigned char* unused_bytes, size_t unused_bytes_size,
+    tsi_handshaker_result** handshaker_result) {
+  if ((unused_bytes_size > 0 && unused_bytes == nullptr) ||
+      handshaker_result == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  fake_handshaker_result* result =
+      static_cast<fake_handshaker_result*>(gpr_zalloc(sizeof(*result)));
+  result->base.vtable = &handshaker_result_vtable;
+  if (unused_bytes_size > 0) {
+    result->unused_bytes =
+        static_cast<unsigned char*>(gpr_malloc(unused_bytes_size));
+    memcpy(result->unused_bytes, unused_bytes, unused_bytes_size);
+  }
+  result->unused_bytes_size = unused_bytes_size;
+  *handshaker_result = &result->base;
+  return TSI_OK;
+}
+
+/* --- tsi_handshaker methods implementation. ---*/
+
+static tsi_result fake_handshaker_get_bytes_to_send_to_peer(
+    tsi_handshaker* self, unsigned char* bytes, size_t* bytes_size) {
+  tsi_fake_handshaker* impl = reinterpret_cast<tsi_fake_handshaker*>(self);
+  tsi_result result = TSI_OK;
+  if (impl->needs_incoming_message || impl->result == TSI_OK) {
+    *bytes_size = 0;
+    return TSI_OK;
+  }
+  if (!impl->outgoing_frame.needs_draining) {
+    tsi_fake_handshake_message next_message_to_send =
+        static_cast<tsi_fake_handshake_message>(impl->next_message_to_send + 2);
+    const char* msg_string =
+        tsi_fake_handshake_message_to_string(impl->next_message_to_send);
+    result = tsi_fake_frame_set_data((unsigned char*)msg_string,
+                                     strlen(msg_string), &impl->outgoing_frame);
+    if (result != TSI_OK) return result;
+    if (next_message_to_send > TSI_FAKE_HANDSHAKE_MESSAGE_MAX) {
+      next_message_to_send = TSI_FAKE_HANDSHAKE_MESSAGE_MAX;
+    }
+    if (GRPC_TRACE_FLAG_ENABLED(tsi_tracing_enabled)) {
+      gpr_log(GPR_INFO, "%s prepared %s.",
+              impl->is_client ? "Client" : "Server",
+              tsi_fake_handshake_message_to_string(impl->next_message_to_send));
+    }
+    impl->next_message_to_send = next_message_to_send;
+  }
+  result = tsi_fake_frame_encode(bytes, bytes_size, &impl->outgoing_frame);
+  if (result != TSI_OK) return result;
+  if (!impl->is_client &&
+      impl->next_message_to_send == TSI_FAKE_HANDSHAKE_MESSAGE_MAX) {
+    /* We're done. */
+    if (GRPC_TRACE_FLAG_ENABLED(tsi_tracing_enabled)) {
+      gpr_log(GPR_INFO, "Server is done.");
+    }
+    impl->result = TSI_OK;
+  } else {
+    impl->needs_incoming_message = 1;
+  }
+  return TSI_OK;
+}
+
+static tsi_result fake_handshaker_process_bytes_from_peer(
+    tsi_handshaker* self, const unsigned char* bytes, size_t* bytes_size) {
+  tsi_result result = TSI_OK;
+  tsi_fake_handshaker* impl = reinterpret_cast<tsi_fake_handshaker*>(self);
+  tsi_fake_handshake_message expected_msg =
+      static_cast<tsi_fake_handshake_message>(impl->next_message_to_send - 1);
+  tsi_fake_handshake_message received_msg;
+
+  if (!impl->needs_incoming_message || impl->result == TSI_OK) {
+    *bytes_size = 0;
+    return TSI_OK;
+  }
+  result = tsi_fake_frame_decode(bytes, bytes_size, &impl->incoming_frame);
+  if (result != TSI_OK) return result;
+
+  /* We now have a complete frame. */
+  result = tsi_fake_handshake_message_from_string(
+      reinterpret_cast<const char*>(impl->incoming_frame.data) +
+          TSI_FAKE_FRAME_HEADER_SIZE,
+      &received_msg);
+  if (result != TSI_OK) {
+    impl->result = result;
+    return result;
+  }
+  if (received_msg != expected_msg) {
+    gpr_log(GPR_ERROR, "Invalid received message (%s instead of %s)",
+            tsi_fake_handshake_message_to_string(received_msg),
+            tsi_fake_handshake_message_to_string(expected_msg));
+  }
+  if (GRPC_TRACE_FLAG_ENABLED(tsi_tracing_enabled)) {
+    gpr_log(GPR_INFO, "%s received %s.", impl->is_client ? "Client" : "Server",
+            tsi_fake_handshake_message_to_string(received_msg));
+  }
+  tsi_fake_frame_reset(&impl->incoming_frame, 0 /* needs_draining */);
+  impl->needs_incoming_message = 0;
+  if (impl->next_message_to_send == TSI_FAKE_HANDSHAKE_MESSAGE_MAX) {
+    /* We're done. */
+    if (GRPC_TRACE_FLAG_ENABLED(tsi_tracing_enabled)) {
+      gpr_log(GPR_INFO, "%s is done.", impl->is_client ? "Client" : "Server");
+    }
+    impl->result = TSI_OK;
+  }
+  return TSI_OK;
+}
+
+static tsi_result fake_handshaker_get_result(tsi_handshaker* self) {
+  tsi_fake_handshaker* impl = reinterpret_cast<tsi_fake_handshaker*>(self);
+  return impl->result;
+}
+
+static void fake_handshaker_destroy(tsi_handshaker* self) {
+  tsi_fake_handshaker* impl = reinterpret_cast<tsi_fake_handshaker*>(self);
+  tsi_fake_frame_destruct(&impl->incoming_frame);
+  tsi_fake_frame_destruct(&impl->outgoing_frame);
+  gpr_free(impl->outgoing_bytes_buffer);
+  gpr_free(self);
+}
+
+static tsi_result fake_handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** handshaker_result,
+    tsi_handshaker_on_next_done_cb /*cb*/, void* /*user_data*/) {
+  /* Sanity check the arguments. */
+  if ((received_bytes_size > 0 && received_bytes == nullptr) ||
+      bytes_to_send == nullptr || bytes_to_send_size == nullptr ||
+      handshaker_result == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_fake_handshaker* handshaker =
+      reinterpret_cast<tsi_fake_handshaker*>(self);
+  tsi_result result = TSI_OK;
+
+  /* Decode and process a handshake frame from the peer. */
+  size_t consumed_bytes_size = received_bytes_size;
+  if (received_bytes_size > 0) {
+    result = fake_handshaker_process_bytes_from_peer(self, received_bytes,
+                                                     &consumed_bytes_size);
+    if (result != TSI_OK) return result;
+  }
+
+  /* Create a handshake message to send to the peer and encode it as a fake
+   * frame. */
+  size_t offset = 0;
+  do {
+    size_t sent_bytes_size = handshaker->outgoing_bytes_buffer_size - offset;
+    result = fake_handshaker_get_bytes_to_send_to_peer(
+        self, handshaker->outgoing_bytes_buffer + offset, &sent_bytes_size);
+    offset += sent_bytes_size;
+    if (result == TSI_INCOMPLETE_DATA) {
+      handshaker->outgoing_bytes_buffer_size *= 2;
+      handshaker->outgoing_bytes_buffer = static_cast<unsigned char*>(
+          gpr_realloc(handshaker->outgoing_bytes_buffer,
+                      handshaker->outgoing_bytes_buffer_size));
+    }
+  } while (result == TSI_INCOMPLETE_DATA);
+  if (result != TSI_OK) return result;
+  *bytes_to_send = handshaker->outgoing_bytes_buffer;
+  *bytes_to_send_size = offset;
+
+  /* Check if the handshake was completed. */
+  if (fake_handshaker_get_result(self) == TSI_HANDSHAKE_IN_PROGRESS) {
+    *handshaker_result = nullptr;
+  } else {
+    /* Calculate the unused bytes. */
+    const unsigned char* unused_bytes = nullptr;
+    size_t unused_bytes_size = received_bytes_size - consumed_bytes_size;
+    if (unused_bytes_size > 0) {
+      unused_bytes = received_bytes + consumed_bytes_size;
+    }
+
+    /* Create a handshaker_result containing the unused bytes. */
+    result = fake_handshaker_result_create(unused_bytes, unused_bytes_size,
+                                           handshaker_result);
+    if (result == TSI_OK) {
+      /* Indicate that the handshake has completed and that a handshaker_result
+       * has been created. */
+      self->handshaker_result_created = true;
+    }
+  }
+  return result;
+}
+
+static const tsi_handshaker_vtable handshaker_vtable = {
+    nullptr, /* get_bytes_to_send_to_peer -- deprecated */
+    nullptr, /* process_bytes_from_peer   -- deprecated */
+    nullptr, /* get_result                -- deprecated */
+    nullptr, /* extract_peer              -- deprecated */
+    nullptr, /* create_frame_protector    -- deprecated */
+    fake_handshaker_destroy,
+    fake_handshaker_next,
+    nullptr, /* shutdown */
+};
+
+tsi_handshaker* tsi_create_fake_handshaker(int is_client) {
+  tsi_fake_handshaker* impl =
+      static_cast<tsi_fake_handshaker*>(gpr_zalloc(sizeof(*impl)));
+  impl->base.vtable = &handshaker_vtable;
+  impl->is_client = is_client;
+  impl->result = TSI_HANDSHAKE_IN_PROGRESS;
+  impl->outgoing_bytes_buffer_size =
+      TSI_FAKE_HANDSHAKER_OUTGOING_BUFFER_INITIAL_SIZE;
+  impl->outgoing_bytes_buffer =
+      static_cast<unsigned char*>(gpr_malloc(impl->outgoing_bytes_buffer_size));
+  if (is_client) {
+    impl->needs_incoming_message = 0;
+    impl->next_message_to_send = TSI_FAKE_CLIENT_INIT;
+  } else {
+    impl->needs_incoming_message = 1;
+    impl->next_message_to_send = TSI_FAKE_SERVER_INIT;
+  }
+  return &impl->base;
+}
+
+tsi_frame_protector* tsi_create_fake_frame_protector(
+    size_t* max_protected_frame_size) {
+  tsi_fake_frame_protector* impl =
+      static_cast<tsi_fake_frame_protector*>(gpr_zalloc(sizeof(*impl)));
+  impl->max_frame_size = (max_protected_frame_size == nullptr)
+                             ? TSI_FAKE_DEFAULT_FRAME_SIZE
+                             : *max_protected_frame_size;
+  impl->base.vtable = &frame_protector_vtable;
+  return &impl->base;
+}
+
+tsi_zero_copy_grpc_protector* tsi_create_fake_zero_copy_grpc_protector(
+    size_t* max_protected_frame_size) {
+  tsi_fake_zero_copy_grpc_protector* impl =
+      static_cast<tsi_fake_zero_copy_grpc_protector*>(
+          gpr_zalloc(sizeof(*impl)));
+  grpc_slice_buffer_init(&impl->header_sb);
+  grpc_slice_buffer_init(&impl->protected_sb);
+  impl->max_frame_size = (max_protected_frame_size == nullptr)
+                             ? TSI_FAKE_DEFAULT_FRAME_SIZE
+                             : *max_protected_frame_size;
+  impl->parsed_frame_size = 0;
+  impl->base.vtable = &zero_copy_grpc_protector_vtable;
+  return &impl->base;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.h
new file mode 100644
index 0000000..704d9fb
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/fake_transport_security.h	
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/transport_security_interface.h"
+
+/* Value for the TSI_CERTIFICATE_TYPE_PEER_PROPERTY property for FAKE certs. */
+#define TSI_FAKE_CERTIFICATE_TYPE "FAKE"
+/* Value of the TSI_SECURITY_LEVEL_PEER_PROPERTY property for FAKE certs. */
+#define TSI_FAKE_SECURITY_LEVEL "TSI_SECURITY_NONE"
+
+/* Creates a fake handshaker that will create a fake frame protector.
+
+   No cryptography is performed in these objects. They just simulate handshake
+   messages going back and forth for the handshaker and do some framing on
+   cleartext data for the protector.  */
+tsi_handshaker* tsi_create_fake_handshaker(int is_client);
+
+/* Creates a protector directly without going through the handshake phase. */
+tsi_frame_protector* tsi_create_fake_frame_protector(
+    size_t* max_protected_frame_size);
+
+/* Creates a zero-copy protector directly without going through the handshake
+ * phase. */
+tsi_zero_copy_grpc_protector* tsi_create_fake_zero_copy_grpc_protector(
+    size_t* max_protected_frame_size);
+
+#endif /* GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/grpc_shadow_boringssl.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/grpc_shadow_boringssl.h
new file mode 100644
index 0000000..4610bb7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/grpc_shadow_boringssl.h	
@@ -0,0 +1,3311 @@
+
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// This file is autogenerated from a template file. Please make
+// modifications to
+// `templates/src/objective-c/tsi/grpc_shadow_boringssl.h.template`
+// instead. This file can be regenerated from the template by running
+// `tools/buildgen/generate_projects.sh`.
+
+#ifndef GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H
+#define GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H
+
+#ifdef GRPC_SHADOW_BORINGSSL_SYMBOLS
+
+#define a2i_GENERAL_NAME GRPC_SHADOW_a2i_GENERAL_NAME
+#define a2i_ipadd GRPC_SHADOW_a2i_ipadd
+#define a2i_IPADDRESS GRPC_SHADOW_a2i_IPADDRESS
+#define a2i_IPADDRESS_NC GRPC_SHADOW_a2i_IPADDRESS_NC
+#define abi_test_bad_unwind_temporary GRPC_SHADOW_abi_test_bad_unwind_temporary
+#define abi_test_bad_unwind_wrong_register GRPC_SHADOW_abi_test_bad_unwind_wrong_register
+#define abi_test_clobber_r10 GRPC_SHADOW_abi_test_clobber_r10
+#define abi_test_clobber_r11 GRPC_SHADOW_abi_test_clobber_r11
+#define abi_test_clobber_r12 GRPC_SHADOW_abi_test_clobber_r12
+#define abi_test_clobber_r13 GRPC_SHADOW_abi_test_clobber_r13
+#define abi_test_clobber_r14 GRPC_SHADOW_abi_test_clobber_r14
+#define abi_test_clobber_r15 GRPC_SHADOW_abi_test_clobber_r15
+#define abi_test_clobber_r8 GRPC_SHADOW_abi_test_clobber_r8
+#define abi_test_clobber_r9 GRPC_SHADOW_abi_test_clobber_r9
+#define abi_test_clobber_rax GRPC_SHADOW_abi_test_clobber_rax
+#define abi_test_clobber_rbp GRPC_SHADOW_abi_test_clobber_rbp
+#define abi_test_clobber_rbx GRPC_SHADOW_abi_test_clobber_rbx
+#define abi_test_clobber_rcx GRPC_SHADOW_abi_test_clobber_rcx
+#define abi_test_clobber_rdi GRPC_SHADOW_abi_test_clobber_rdi
+#define abi_test_clobber_rdx GRPC_SHADOW_abi_test_clobber_rdx
+#define abi_test_clobber_rsi GRPC_SHADOW_abi_test_clobber_rsi
+#define abi_test_clobber_xmm0 GRPC_SHADOW_abi_test_clobber_xmm0
+#define abi_test_clobber_xmm1 GRPC_SHADOW_abi_test_clobber_xmm1
+#define abi_test_clobber_xmm10 GRPC_SHADOW_abi_test_clobber_xmm10
+#define abi_test_clobber_xmm11 GRPC_SHADOW_abi_test_clobber_xmm11
+#define abi_test_clobber_xmm12 GRPC_SHADOW_abi_test_clobber_xmm12
+#define abi_test_clobber_xmm13 GRPC_SHADOW_abi_test_clobber_xmm13
+#define abi_test_clobber_xmm14 GRPC_SHADOW_abi_test_clobber_xmm14
+#define abi_test_clobber_xmm15 GRPC_SHADOW_abi_test_clobber_xmm15
+#define abi_test_clobber_xmm2 GRPC_SHADOW_abi_test_clobber_xmm2
+#define abi_test_clobber_xmm3 GRPC_SHADOW_abi_test_clobber_xmm3
+#define abi_test_clobber_xmm4 GRPC_SHADOW_abi_test_clobber_xmm4
+#define abi_test_clobber_xmm5 GRPC_SHADOW_abi_test_clobber_xmm5
+#define abi_test_clobber_xmm6 GRPC_SHADOW_abi_test_clobber_xmm6
+#define abi_test_clobber_xmm7 GRPC_SHADOW_abi_test_clobber_xmm7
+#define abi_test_clobber_xmm8 GRPC_SHADOW_abi_test_clobber_xmm8
+#define abi_test_clobber_xmm9 GRPC_SHADOW_abi_test_clobber_xmm9
+#define abi_test_get_and_clear_direction_flag GRPC_SHADOW_abi_test_get_and_clear_direction_flag
+#define abi_test_set_direction_flag GRPC_SHADOW_abi_test_set_direction_flag
+#define abi_test_trampoline GRPC_SHADOW_abi_test_trampoline
+#define abi_test_unwind_return GRPC_SHADOW_abi_test_unwind_return
+#define abi_test_unwind_start GRPC_SHADOW_abi_test_unwind_start
+#define abi_test_unwind_stop GRPC_SHADOW_abi_test_unwind_stop
+#define ACCESS_DESCRIPTION_free GRPC_SHADOW_ACCESS_DESCRIPTION_free
+#define ACCESS_DESCRIPTION_it GRPC_SHADOW_ACCESS_DESCRIPTION_it
+#define ACCESS_DESCRIPTION_new GRPC_SHADOW_ACCESS_DESCRIPTION_new
+#define aes128gcmsiv_aes_ks GRPC_SHADOW_aes128gcmsiv_aes_ks
+#define aes128gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes128gcmsiv_aes_ks_enc_x1
+#define aes128gcmsiv_dec GRPC_SHADOW_aes128gcmsiv_dec
+#define aes128gcmsiv_ecb_enc_block GRPC_SHADOW_aes128gcmsiv_ecb_enc_block
+#define aes128gcmsiv_enc_msg_x4 GRPC_SHADOW_aes128gcmsiv_enc_msg_x4
+#define aes128gcmsiv_enc_msg_x8 GRPC_SHADOW_aes128gcmsiv_enc_msg_x8
+#define aes128gcmsiv_kdf GRPC_SHADOW_aes128gcmsiv_kdf
+#define aes256gcmsiv_aes_ks GRPC_SHADOW_aes256gcmsiv_aes_ks
+#define aes256gcmsiv_aes_ks_enc_x1 GRPC_SHADOW_aes256gcmsiv_aes_ks_enc_x1
+#define aes256gcmsiv_dec GRPC_SHADOW_aes256gcmsiv_dec
+#define aes256gcmsiv_ecb_enc_block GRPC_SHADOW_aes256gcmsiv_ecb_enc_block
+#define aes256gcmsiv_enc_msg_x4 GRPC_SHADOW_aes256gcmsiv_enc_msg_x4
+#define aes256gcmsiv_enc_msg_x8 GRPC_SHADOW_aes256gcmsiv_enc_msg_x8
+#define aes256gcmsiv_kdf GRPC_SHADOW_aes256gcmsiv_kdf
+#define AES_cbc_encrypt GRPC_SHADOW_AES_cbc_encrypt
+#define AES_cfb128_encrypt GRPC_SHADOW_AES_cfb128_encrypt
+#define AES_CMAC GRPC_SHADOW_AES_CMAC
+#define AES_ctr128_encrypt GRPC_SHADOW_AES_ctr128_encrypt
+#define aes_ctr_set_key GRPC_SHADOW_aes_ctr_set_key
+#define AES_decrypt GRPC_SHADOW_AES_decrypt
+#define AES_ecb_encrypt GRPC_SHADOW_AES_ecb_encrypt
+#define AES_encrypt GRPC_SHADOW_AES_encrypt
+#define aesgcmsiv_htable6_init GRPC_SHADOW_aesgcmsiv_htable6_init
+#define aesgcmsiv_htable_init GRPC_SHADOW_aesgcmsiv_htable_init
+#define aesgcmsiv_htable_polyval GRPC_SHADOW_aesgcmsiv_htable_polyval
+#define aesgcmsiv_polyval_horner GRPC_SHADOW_aesgcmsiv_polyval_horner
+#define aes_hw_cbc_encrypt GRPC_SHADOW_aes_hw_cbc_encrypt
+#define aes_hw_ctr32_encrypt_blocks GRPC_SHADOW_aes_hw_ctr32_encrypt_blocks
+#define aes_hw_decrypt GRPC_SHADOW_aes_hw_decrypt
+#define aes_hw_ecb_encrypt GRPC_SHADOW_aes_hw_ecb_encrypt
+#define aes_hw_encrypt GRPC_SHADOW_aes_hw_encrypt
+#define aes_hw_set_decrypt_key GRPC_SHADOW_aes_hw_set_decrypt_key
+#define aes_hw_set_encrypt_key GRPC_SHADOW_aes_hw_set_encrypt_key
+#define aesni_gcm_decrypt GRPC_SHADOW_aesni_gcm_decrypt
+#define aesni_gcm_encrypt GRPC_SHADOW_aesni_gcm_encrypt
+#define aes_nohw_cbc_encrypt GRPC_SHADOW_aes_nohw_cbc_encrypt
+#define aes_nohw_ctr32_encrypt_blocks GRPC_SHADOW_aes_nohw_ctr32_encrypt_blocks
+#define aes_nohw_decrypt GRPC_SHADOW_aes_nohw_decrypt
+#define aes_nohw_encrypt GRPC_SHADOW_aes_nohw_encrypt
+#define aes_nohw_set_decrypt_key GRPC_SHADOW_aes_nohw_set_decrypt_key
+#define aes_nohw_set_encrypt_key GRPC_SHADOW_aes_nohw_set_encrypt_key
+#define AES_ofb128_encrypt GRPC_SHADOW_AES_ofb128_encrypt
+#define AES_set_decrypt_key GRPC_SHADOW_AES_set_decrypt_key
+#define AES_set_encrypt_key GRPC_SHADOW_AES_set_encrypt_key
+#define AES_unwrap_key GRPC_SHADOW_AES_unwrap_key
+#define AES_unwrap_key_padded GRPC_SHADOW_AES_unwrap_key_padded
+#define AES_wrap_key GRPC_SHADOW_AES_wrap_key
+#define AES_wrap_key_padded GRPC_SHADOW_AES_wrap_key_padded
+#define ASN1_ANY_it GRPC_SHADOW_ASN1_ANY_it
+#define ASN1_BIT_STRING_check GRPC_SHADOW_ASN1_BIT_STRING_check
+#define ASN1_BIT_STRING_free GRPC_SHADOW_ASN1_BIT_STRING_free
+#define ASN1_BIT_STRING_get_bit GRPC_SHADOW_ASN1_BIT_STRING_get_bit
+#define ASN1_BIT_STRING_it GRPC_SHADOW_ASN1_BIT_STRING_it
+#define ASN1_BIT_STRING_new GRPC_SHADOW_ASN1_BIT_STRING_new
+#define ASN1_BIT_STRING_set GRPC_SHADOW_ASN1_BIT_STRING_set
+#define ASN1_BIT_STRING_set_bit GRPC_SHADOW_ASN1_BIT_STRING_set_bit
+#define ASN1_BMPSTRING_free GRPC_SHADOW_ASN1_BMPSTRING_free
+#define ASN1_BMPSTRING_it GRPC_SHADOW_ASN1_BMPSTRING_it
+#define ASN1_BMPSTRING_new GRPC_SHADOW_ASN1_BMPSTRING_new
+#define ASN1_BOOLEAN_it GRPC_SHADOW_ASN1_BOOLEAN_it
+#define ASN1_digest GRPC_SHADOW_ASN1_digest
+#define asn1_do_adb GRPC_SHADOW_asn1_do_adb
+#define asn1_enc_free GRPC_SHADOW_asn1_enc_free
+#define asn1_enc_init GRPC_SHADOW_asn1_enc_init
+#define asn1_enc_restore GRPC_SHADOW_asn1_enc_restore
+#define asn1_enc_save GRPC_SHADOW_asn1_enc_save
+#define ASN1_ENUMERATED_free GRPC_SHADOW_ASN1_ENUMERATED_free
+#define ASN1_ENUMERATED_get GRPC_SHADOW_ASN1_ENUMERATED_get
+#define ASN1_ENUMERATED_it GRPC_SHADOW_ASN1_ENUMERATED_it
+#define ASN1_ENUMERATED_new GRPC_SHADOW_ASN1_ENUMERATED_new
+#define ASN1_ENUMERATED_set GRPC_SHADOW_ASN1_ENUMERATED_set
+#define ASN1_ENUMERATED_to_BN GRPC_SHADOW_ASN1_ENUMERATED_to_BN
+#define asn1_ex_c2i GRPC_SHADOW_asn1_ex_c2i
+#define asn1_ex_i2c GRPC_SHADOW_asn1_ex_i2c
+#define ASN1_FBOOLEAN_it GRPC_SHADOW_ASN1_FBOOLEAN_it
+#define ASN1_GENERALIZEDTIME_adj GRPC_SHADOW_ASN1_GENERALIZEDTIME_adj
+#define ASN1_GENERALIZEDTIME_check GRPC_SHADOW_ASN1_GENERALIZEDTIME_check
+#define ASN1_GENERALIZEDTIME_free GRPC_SHADOW_ASN1_GENERALIZEDTIME_free
+#define ASN1_GENERALIZEDTIME_it GRPC_SHADOW_ASN1_GENERALIZEDTIME_it
+#define ASN1_GENERALIZEDTIME_new GRPC_SHADOW_ASN1_GENERALIZEDTIME_new
+#define ASN1_GENERALIZEDTIME_print GRPC_SHADOW_ASN1_GENERALIZEDTIME_print
+#define ASN1_GENERALIZEDTIME_set GRPC_SHADOW_ASN1_GENERALIZEDTIME_set
+#define ASN1_GENERALIZEDTIME_set_string GRPC_SHADOW_ASN1_GENERALIZEDTIME_set_string
+#define asn1_generalizedtime_to_tm GRPC_SHADOW_asn1_generalizedtime_to_tm
+#define ASN1_GENERALSTRING_free GRPC_SHADOW_ASN1_GENERALSTRING_free
+#define ASN1_GENERALSTRING_it GRPC_SHADOW_ASN1_GENERALSTRING_it
+#define ASN1_GENERALSTRING_new GRPC_SHADOW_ASN1_GENERALSTRING_new
+#define ASN1_generate_nconf GRPC_SHADOW_ASN1_generate_nconf
+#define ASN1_generate_v3 GRPC_SHADOW_ASN1_generate_v3
+#define asn1_get_choice_selector GRPC_SHADOW_asn1_get_choice_selector
+#define asn1_get_field_ptr GRPC_SHADOW_asn1_get_field_ptr
+#define ASN1_get_object GRPC_SHADOW_ASN1_get_object
+#define ASN1_IA5STRING_free GRPC_SHADOW_ASN1_IA5STRING_free
+#define ASN1_IA5STRING_it GRPC_SHADOW_ASN1_IA5STRING_it
+#define ASN1_IA5STRING_new GRPC_SHADOW_ASN1_IA5STRING_new
+#define ASN1_INTEGER_cmp GRPC_SHADOW_ASN1_INTEGER_cmp
+#define ASN1_INTEGER_dup GRPC_SHADOW_ASN1_INTEGER_dup
+#define ASN1_INTEGER_free GRPC_SHADOW_ASN1_INTEGER_free
+#define ASN1_INTEGER_get GRPC_SHADOW_ASN1_INTEGER_get
+#define ASN1_INTEGER_it GRPC_SHADOW_ASN1_INTEGER_it
+#define ASN1_INTEGER_new GRPC_SHADOW_ASN1_INTEGER_new
+#define ASN1_INTEGER_set GRPC_SHADOW_ASN1_INTEGER_set
+#define ASN1_INTEGER_set_uint64 GRPC_SHADOW_ASN1_INTEGER_set_uint64
+#define ASN1_INTEGER_to_BN GRPC_SHADOW_ASN1_INTEGER_to_BN
+#define asn1_item_combine_free GRPC_SHADOW_asn1_item_combine_free
+#define ASN1_item_d2i GRPC_SHADOW_ASN1_item_d2i
+#define ASN1_item_d2i_bio GRPC_SHADOW_ASN1_item_d2i_bio
+#define ASN1_item_d2i_fp GRPC_SHADOW_ASN1_item_d2i_fp
+#define ASN1_item_digest GRPC_SHADOW_ASN1_item_digest
+#define ASN1_item_dup GRPC_SHADOW_ASN1_item_dup
+#define ASN1_item_ex_d2i GRPC_SHADOW_ASN1_item_ex_d2i
+#define ASN1_item_ex_free GRPC_SHADOW_ASN1_item_ex_free
+#define ASN1_item_ex_i2d GRPC_SHADOW_ASN1_item_ex_i2d
+#define ASN1_item_ex_new GRPC_SHADOW_ASN1_item_ex_new
+#define ASN1_item_free GRPC_SHADOW_ASN1_item_free
+#define ASN1_item_i2d GRPC_SHADOW_ASN1_item_i2d
+#define ASN1_item_i2d_bio GRPC_SHADOW_ASN1_item_i2d_bio
+#define ASN1_item_i2d_fp GRPC_SHADOW_ASN1_item_i2d_fp
+#define ASN1_item_ndef_i2d GRPC_SHADOW_ASN1_item_ndef_i2d
+#define ASN1_item_new GRPC_SHADOW_ASN1_item_new
+#define ASN1_item_pack GRPC_SHADOW_ASN1_item_pack
+#define ASN1_item_sign GRPC_SHADOW_ASN1_item_sign
+#define ASN1_item_sign_ctx GRPC_SHADOW_ASN1_item_sign_ctx
+#define ASN1_item_unpack GRPC_SHADOW_ASN1_item_unpack
+#define ASN1_item_verify GRPC_SHADOW_ASN1_item_verify
+#define ASN1_mbstring_copy GRPC_SHADOW_ASN1_mbstring_copy
+#define ASN1_mbstring_ncopy GRPC_SHADOW_ASN1_mbstring_ncopy
+#define ASN1_NULL_free GRPC_SHADOW_ASN1_NULL_free
+#define ASN1_NULL_it GRPC_SHADOW_ASN1_NULL_it
+#define ASN1_NULL_new GRPC_SHADOW_ASN1_NULL_new
+#define ASN1_OBJECT_create GRPC_SHADOW_ASN1_OBJECT_create
+#define ASN1_OBJECT_free GRPC_SHADOW_ASN1_OBJECT_free
+#define ASN1_OBJECT_it GRPC_SHADOW_ASN1_OBJECT_it
+#define ASN1_OBJECT_new GRPC_SHADOW_ASN1_OBJECT_new
+#define ASN1_object_size GRPC_SHADOW_ASN1_object_size
+#define ASN1_OCTET_STRING_cmp GRPC_SHADOW_ASN1_OCTET_STRING_cmp
+#define ASN1_OCTET_STRING_dup GRPC_SHADOW_ASN1_OCTET_STRING_dup
+#define ASN1_OCTET_STRING_free GRPC_SHADOW_ASN1_OCTET_STRING_free
+#define ASN1_OCTET_STRING_it GRPC_SHADOW_ASN1_OCTET_STRING_it
+#define ASN1_OCTET_STRING_NDEF_it GRPC_SHADOW_ASN1_OCTET_STRING_NDEF_it
+#define ASN1_OCTET_STRING_new GRPC_SHADOW_ASN1_OCTET_STRING_new
+#define ASN1_OCTET_STRING_set GRPC_SHADOW_ASN1_OCTET_STRING_set
+#define ASN1_primitive_free GRPC_SHADOW_ASN1_primitive_free
+#define ASN1_primitive_new GRPC_SHADOW_ASN1_primitive_new
+#define ASN1_PRINTABLE_free GRPC_SHADOW_ASN1_PRINTABLE_free
+#define ASN1_PRINTABLE_it GRPC_SHADOW_ASN1_PRINTABLE_it
+#define ASN1_PRINTABLE_new GRPC_SHADOW_ASN1_PRINTABLE_new
+#define ASN1_PRINTABLESTRING_free GRPC_SHADOW_ASN1_PRINTABLESTRING_free
+#define ASN1_PRINTABLESTRING_it GRPC_SHADOW_ASN1_PRINTABLESTRING_it
+#define ASN1_PRINTABLESTRING_new GRPC_SHADOW_ASN1_PRINTABLESTRING_new
+#define ASN1_PRINTABLE_type GRPC_SHADOW_ASN1_PRINTABLE_type
+#define ASN1_put_eoc GRPC_SHADOW_ASN1_put_eoc
+#define ASN1_put_object GRPC_SHADOW_ASN1_put_object
+#define asn1_refcount_dec_and_test_zero GRPC_SHADOW_asn1_refcount_dec_and_test_zero
+#define asn1_refcount_set_one GRPC_SHADOW_asn1_refcount_set_one
+#define ASN1_SEQUENCE_ANY_it GRPC_SHADOW_ASN1_SEQUENCE_ANY_it
+#define ASN1_SEQUENCE_it GRPC_SHADOW_ASN1_SEQUENCE_it
+#define ASN1_SET_ANY_it GRPC_SHADOW_ASN1_SET_ANY_it
+#define asn1_set_choice_selector GRPC_SHADOW_asn1_set_choice_selector
+#define ASN1_STRING_cmp GRPC_SHADOW_ASN1_STRING_cmp
+#define ASN1_STRING_copy GRPC_SHADOW_ASN1_STRING_copy
+#define ASN1_STRING_data GRPC_SHADOW_ASN1_STRING_data
+#define ASN1_STRING_dup GRPC_SHADOW_ASN1_STRING_dup
+#define ASN1_STRING_free GRPC_SHADOW_ASN1_STRING_free
+#define ASN1_STRING_get0_data GRPC_SHADOW_ASN1_STRING_get0_data
+#define ASN1_STRING_get_default_mask GRPC_SHADOW_ASN1_STRING_get_default_mask
+#define ASN1_STRING_length GRPC_SHADOW_ASN1_STRING_length
+#define ASN1_STRING_length_set GRPC_SHADOW_ASN1_STRING_length_set
+#define ASN1_STRING_new GRPC_SHADOW_ASN1_STRING_new
+#define ASN1_STRING_print GRPC_SHADOW_ASN1_STRING_print
+#define ASN1_STRING_print_ex GRPC_SHADOW_ASN1_STRING_print_ex
+#define ASN1_STRING_print_ex_fp GRPC_SHADOW_ASN1_STRING_print_ex_fp
+#define ASN1_STRING_set GRPC_SHADOW_ASN1_STRING_set
+#define ASN1_STRING_set0 GRPC_SHADOW_ASN1_STRING_set0
+#define ASN1_STRING_set_by_NID GRPC_SHADOW_ASN1_STRING_set_by_NID
+#define ASN1_STRING_set_default_mask GRPC_SHADOW_ASN1_STRING_set_default_mask
+#define ASN1_STRING_set_default_mask_asc GRPC_SHADOW_ASN1_STRING_set_default_mask_asc
+#define ASN1_STRING_TABLE_add GRPC_SHADOW_ASN1_STRING_TABLE_add
+#define ASN1_STRING_TABLE_cleanup GRPC_SHADOW_ASN1_STRING_TABLE_cleanup
+#define ASN1_STRING_TABLE_get GRPC_SHADOW_ASN1_STRING_TABLE_get
+#define ASN1_STRING_to_UTF8 GRPC_SHADOW_ASN1_STRING_to_UTF8
+#define ASN1_STRING_type GRPC_SHADOW_ASN1_STRING_type
+#define ASN1_STRING_type_new GRPC_SHADOW_ASN1_STRING_type_new
+#define ASN1_T61STRING_free GRPC_SHADOW_ASN1_T61STRING_free
+#define ASN1_T61STRING_it GRPC_SHADOW_ASN1_T61STRING_it
+#define ASN1_T61STRING_new GRPC_SHADOW_ASN1_T61STRING_new
+#define ASN1_tag2bit GRPC_SHADOW_ASN1_tag2bit
+#define ASN1_tag2str GRPC_SHADOW_ASN1_tag2str
+#define ASN1_TBOOLEAN_it GRPC_SHADOW_ASN1_TBOOLEAN_it
+#define ASN1_template_free GRPC_SHADOW_ASN1_template_free
+#define ASN1_template_new GRPC_SHADOW_ASN1_template_new
+#define ASN1_TIME_adj GRPC_SHADOW_ASN1_TIME_adj
+#define ASN1_TIME_check GRPC_SHADOW_ASN1_TIME_check
+#define ASN1_TIME_diff GRPC_SHADOW_ASN1_TIME_diff
+#define ASN1_TIME_free GRPC_SHADOW_ASN1_TIME_free
+#define ASN1_TIME_it GRPC_SHADOW_ASN1_TIME_it
+#define ASN1_TIME_new GRPC_SHADOW_ASN1_TIME_new
+#define ASN1_TIME_print GRPC_SHADOW_ASN1_TIME_print
+#define ASN1_TIME_set GRPC_SHADOW_ASN1_TIME_set
+#define ASN1_TIME_set_string GRPC_SHADOW_ASN1_TIME_set_string
+#define ASN1_TIME_to_generalizedtime GRPC_SHADOW_ASN1_TIME_to_generalizedtime
+#define ASN1_TYPE_cmp GRPC_SHADOW_ASN1_TYPE_cmp
+#define ASN1_TYPE_free GRPC_SHADOW_ASN1_TYPE_free
+#define ASN1_TYPE_get GRPC_SHADOW_ASN1_TYPE_get
+#define ASN1_TYPE_new GRPC_SHADOW_ASN1_TYPE_new
+#define ASN1_TYPE_set GRPC_SHADOW_ASN1_TYPE_set
+#define ASN1_TYPE_set1 GRPC_SHADOW_ASN1_TYPE_set1
+#define ASN1_UNIVERSALSTRING_free GRPC_SHADOW_ASN1_UNIVERSALSTRING_free
+#define ASN1_UNIVERSALSTRING_it GRPC_SHADOW_ASN1_UNIVERSALSTRING_it
+#define ASN1_UNIVERSALSTRING_new GRPC_SHADOW_ASN1_UNIVERSALSTRING_new
+#define ASN1_UTCTIME_adj GRPC_SHADOW_ASN1_UTCTIME_adj
+#define ASN1_UTCTIME_check GRPC_SHADOW_ASN1_UTCTIME_check
+#define ASN1_UTCTIME_cmp_time_t GRPC_SHADOW_ASN1_UTCTIME_cmp_time_t
+#define ASN1_UTCTIME_free GRPC_SHADOW_ASN1_UTCTIME_free
+#define ASN1_UTCTIME_it GRPC_SHADOW_ASN1_UTCTIME_it
+#define ASN1_UTCTIME_new GRPC_SHADOW_ASN1_UTCTIME_new
+#define ASN1_UTCTIME_print GRPC_SHADOW_ASN1_UTCTIME_print
+#define ASN1_UTCTIME_set GRPC_SHADOW_ASN1_UTCTIME_set
+#define ASN1_UTCTIME_set_string GRPC_SHADOW_ASN1_UTCTIME_set_string
+#define asn1_utctime_to_tm GRPC_SHADOW_asn1_utctime_to_tm
+#define ASN1_UTF8STRING_free GRPC_SHADOW_ASN1_UTF8STRING_free
+#define ASN1_UTF8STRING_it GRPC_SHADOW_ASN1_UTF8STRING_it
+#define ASN1_UTF8STRING_new GRPC_SHADOW_ASN1_UTF8STRING_new
+#define ASN1_VISIBLESTRING_free GRPC_SHADOW_ASN1_VISIBLESTRING_free
+#define ASN1_VISIBLESTRING_it GRPC_SHADOW_ASN1_VISIBLESTRING_it
+#define ASN1_VISIBLESTRING_new GRPC_SHADOW_ASN1_VISIBLESTRING_new
+#define AUTHORITY_INFO_ACCESS_free GRPC_SHADOW_AUTHORITY_INFO_ACCESS_free
+#define AUTHORITY_INFO_ACCESS_it GRPC_SHADOW_AUTHORITY_INFO_ACCESS_it
+#define AUTHORITY_INFO_ACCESS_new GRPC_SHADOW_AUTHORITY_INFO_ACCESS_new
+#define AUTHORITY_KEYID_free GRPC_SHADOW_AUTHORITY_KEYID_free
+#define AUTHORITY_KEYID_it GRPC_SHADOW_AUTHORITY_KEYID_it
+#define AUTHORITY_KEYID_new GRPC_SHADOW_AUTHORITY_KEYID_new
+#define BASIC_CONSTRAINTS_free GRPC_SHADOW_BASIC_CONSTRAINTS_free
+#define BASIC_CONSTRAINTS_it GRPC_SHADOW_BASIC_CONSTRAINTS_it
+#define BASIC_CONSTRAINTS_new GRPC_SHADOW_BASIC_CONSTRAINTS_new
+#define beeu_mod_inverse_vartime GRPC_SHADOW_beeu_mod_inverse_vartime
+#define BIO_append_filename GRPC_SHADOW_BIO_append_filename
+#define BIO_callback_ctrl GRPC_SHADOW_BIO_callback_ctrl
+#define BIO_clear_flags GRPC_SHADOW_BIO_clear_flags
+#define BIO_clear_retry_flags GRPC_SHADOW_BIO_clear_retry_flags
+#define bio_clear_socket_error GRPC_SHADOW_bio_clear_socket_error
+#define BIO_copy_next_retry GRPC_SHADOW_BIO_copy_next_retry
+#define BIO_ctrl GRPC_SHADOW_BIO_ctrl
+#define BIO_ctrl_get_read_request GRPC_SHADOW_BIO_ctrl_get_read_request
+#define BIO_ctrl_get_write_guarantee GRPC_SHADOW_BIO_ctrl_get_write_guarantee
+#define BIO_ctrl_pending GRPC_SHADOW_BIO_ctrl_pending
+#define BIO_do_connect GRPC_SHADOW_BIO_do_connect
+#define BIO_eof GRPC_SHADOW_BIO_eof
+#define bio_fd_should_retry GRPC_SHADOW_bio_fd_should_retry
+#define BIO_find_type GRPC_SHADOW_BIO_find_type
+#define BIO_flush GRPC_SHADOW_BIO_flush
+#define BIO_free GRPC_SHADOW_BIO_free
+#define BIO_free_all GRPC_SHADOW_BIO_free_all
+#define BIO_f_ssl GRPC_SHADOW_BIO_f_ssl
+#define BIO_get_data GRPC_SHADOW_BIO_get_data
+#define BIO_get_fd GRPC_SHADOW_BIO_get_fd
+#define BIO_get_fp GRPC_SHADOW_BIO_get_fp
+#define BIO_get_init GRPC_SHADOW_BIO_get_init
+#define BIO_get_mem_data GRPC_SHADOW_BIO_get_mem_data
+#define BIO_get_mem_ptr GRPC_SHADOW_BIO_get_mem_ptr
+#define BIO_get_new_index GRPC_SHADOW_BIO_get_new_index
+#define BIO_get_retry_flags GRPC_SHADOW_BIO_get_retry_flags
+#define BIO_get_retry_reason GRPC_SHADOW_BIO_get_retry_reason
+#define BIO_gets GRPC_SHADOW_BIO_gets
+#define BIO_get_shutdown GRPC_SHADOW_BIO_get_shutdown
+#define BIO_hexdump GRPC_SHADOW_BIO_hexdump
+#define BIO_indent GRPC_SHADOW_BIO_indent
+#define BIO_int_ctrl GRPC_SHADOW_BIO_int_ctrl
+#define bio_ip_and_port_to_socket_and_addr GRPC_SHADOW_bio_ip_and_port_to_socket_and_addr
+#define BIO_mem_contents GRPC_SHADOW_BIO_mem_contents
+#define BIO_meth_free GRPC_SHADOW_BIO_meth_free
+#define BIO_meth_new GRPC_SHADOW_BIO_meth_new
+#define BIO_method_type GRPC_SHADOW_BIO_method_type
+#define BIO_meth_set_create GRPC_SHADOW_BIO_meth_set_create
+#define BIO_meth_set_ctrl GRPC_SHADOW_BIO_meth_set_ctrl
+#define BIO_meth_set_destroy GRPC_SHADOW_BIO_meth_set_destroy
+#define BIO_meth_set_gets GRPC_SHADOW_BIO_meth_set_gets
+#define BIO_meth_set_puts GRPC_SHADOW_BIO_meth_set_puts
+#define BIO_meth_set_read GRPC_SHADOW_BIO_meth_set_read
+#define BIO_meth_set_write GRPC_SHADOW_BIO_meth_set_write
+#define BIO_new GRPC_SHADOW_BIO_new
+#define BIO_new_bio_pair GRPC_SHADOW_BIO_new_bio_pair
+#define BIO_new_connect GRPC_SHADOW_BIO_new_connect
+#define BIO_new_fd GRPC_SHADOW_BIO_new_fd
+#define BIO_new_file GRPC_SHADOW_BIO_new_file
+#define BIO_new_fp GRPC_SHADOW_BIO_new_fp
+#define BIO_new_mem_buf GRPC_SHADOW_BIO_new_mem_buf
+#define BIO_new_socket GRPC_SHADOW_BIO_new_socket
+#define BIO_next GRPC_SHADOW_BIO_next
+#define BIO_number_read GRPC_SHADOW_BIO_number_read
+#define BIO_number_written GRPC_SHADOW_BIO_number_written
+#define BIO_pending GRPC_SHADOW_BIO_pending
+#define BIO_pop GRPC_SHADOW_BIO_pop
+#define BIO_printf GRPC_SHADOW_BIO_printf
+#define BIO_ptr_ctrl GRPC_SHADOW_BIO_ptr_ctrl
+#define BIO_push GRPC_SHADOW_BIO_push
+#define BIO_puts GRPC_SHADOW_BIO_puts
+#define BIO_read GRPC_SHADOW_BIO_read
+#define BIO_read_asn1 GRPC_SHADOW_BIO_read_asn1
+#define BIO_read_filename GRPC_SHADOW_BIO_read_filename
+#define BIO_reset GRPC_SHADOW_BIO_reset
+#define BIO_rw_filename GRPC_SHADOW_BIO_rw_filename
+#define BIO_s_connect GRPC_SHADOW_BIO_s_connect
+#define BIO_set_close GRPC_SHADOW_BIO_set_close
+#define BIO_set_conn_hostname GRPC_SHADOW_BIO_set_conn_hostname
+#define BIO_set_conn_int_port GRPC_SHADOW_BIO_set_conn_int_port
+#define BIO_set_conn_port GRPC_SHADOW_BIO_set_conn_port
+#define BIO_set_data GRPC_SHADOW_BIO_set_data
+#define BIO_set_fd GRPC_SHADOW_BIO_set_fd
+#define BIO_set_flags GRPC_SHADOW_BIO_set_flags
+#define BIO_set_fp GRPC_SHADOW_BIO_set_fp
+#define BIO_set_init GRPC_SHADOW_BIO_set_init
+#define BIO_set_mem_buf GRPC_SHADOW_BIO_set_mem_buf
+#define BIO_set_mem_eof_return GRPC_SHADOW_BIO_set_mem_eof_return
+#define BIO_set_nbio GRPC_SHADOW_BIO_set_nbio
+#define BIO_set_retry_read GRPC_SHADOW_BIO_set_retry_read
+#define BIO_set_retry_special GRPC_SHADOW_BIO_set_retry_special
+#define BIO_set_retry_write GRPC_SHADOW_BIO_set_retry_write
+#define BIO_set_shutdown GRPC_SHADOW_BIO_set_shutdown
+#define BIO_set_ssl GRPC_SHADOW_BIO_set_ssl
+#define BIO_set_write_buffer_size GRPC_SHADOW_BIO_set_write_buffer_size
+#define BIO_s_fd GRPC_SHADOW_BIO_s_fd
+#define BIO_s_file GRPC_SHADOW_BIO_s_file
+#define BIO_should_io_special GRPC_SHADOW_BIO_should_io_special
+#define BIO_should_read GRPC_SHADOW_BIO_should_read
+#define BIO_should_retry GRPC_SHADOW_BIO_should_retry
+#define BIO_should_write GRPC_SHADOW_BIO_should_write
+#define BIO_shutdown_wr GRPC_SHADOW_BIO_shutdown_wr
+#define BIO_s_mem GRPC_SHADOW_BIO_s_mem
+#define BIO_snprintf GRPC_SHADOW_BIO_snprintf
+#define bio_sock_error GRPC_SHADOW_bio_sock_error
+#define bio_socket_nbio GRPC_SHADOW_bio_socket_nbio
+#define BIO_s_socket GRPC_SHADOW_BIO_s_socket
+#define BIO_test_flags GRPC_SHADOW_BIO_test_flags
+#define BIO_up_ref GRPC_SHADOW_BIO_up_ref
+#define BIO_vfree GRPC_SHADOW_BIO_vfree
+#define BIO_vsnprintf GRPC_SHADOW_BIO_vsnprintf
+#define BIO_wpending GRPC_SHADOW_BIO_wpending
+#define BIO_write GRPC_SHADOW_BIO_write
+#define BIO_write_all GRPC_SHADOW_BIO_write_all
+#define BIO_write_filename GRPC_SHADOW_BIO_write_filename
+#define BN_abs_is_word GRPC_SHADOW_BN_abs_is_word
+#define bn_abs_sub_consttime GRPC_SHADOW_bn_abs_sub_consttime
+#define BN_add GRPC_SHADOW_BN_add
+#define BN_add_word GRPC_SHADOW_BN_add_word
+#define bn_add_words GRPC_SHADOW_bn_add_words
+#define BN_asc2bn GRPC_SHADOW_BN_asc2bn
+#define BN_bin2bn GRPC_SHADOW_BN_bin2bn
+#define BN_BLINDING_convert GRPC_SHADOW_BN_BLINDING_convert
+#define BN_BLINDING_free GRPC_SHADOW_BN_BLINDING_free
+#define BN_BLINDING_invert GRPC_SHADOW_BN_BLINDING_invert
+#define BN_BLINDING_new GRPC_SHADOW_BN_BLINDING_new
+#define BN_bn2bin GRPC_SHADOW_BN_bn2bin
+#define BN_bn2binpad GRPC_SHADOW_BN_bn2binpad
+#define BN_bn2bin_padded GRPC_SHADOW_BN_bn2bin_padded
+#define BN_bn2cbb_padded GRPC_SHADOW_BN_bn2cbb_padded
+#define BN_bn2dec GRPC_SHADOW_BN_bn2dec
+#define BN_bn2hex GRPC_SHADOW_BN_bn2hex
+#define BN_bn2le_padded GRPC_SHADOW_BN_bn2le_padded
+#define BN_bn2mpi GRPC_SHADOW_BN_bn2mpi
+#define BN_clear GRPC_SHADOW_BN_clear
+#define BN_clear_bit GRPC_SHADOW_BN_clear_bit
+#define BN_clear_free GRPC_SHADOW_BN_clear_free
+#define BN_cmp GRPC_SHADOW_BN_cmp
+#define BN_cmp_word GRPC_SHADOW_BN_cmp_word
+#define BN_copy GRPC_SHADOW_BN_copy
+#define bn_copy_words GRPC_SHADOW_bn_copy_words
+#define BN_count_low_zero_bits GRPC_SHADOW_BN_count_low_zero_bits
+#define BN_CTX_end GRPC_SHADOW_BN_CTX_end
+#define BN_CTX_free GRPC_SHADOW_BN_CTX_free
+#define BN_CTX_get GRPC_SHADOW_BN_CTX_get
+#define BN_CTX_new GRPC_SHADOW_BN_CTX_new
+#define BN_CTX_start GRPC_SHADOW_BN_CTX_start
+#define BN_dec2bn GRPC_SHADOW_BN_dec2bn
+#define BN_div GRPC_SHADOW_BN_div
+#define bn_div_consttime GRPC_SHADOW_bn_div_consttime
+#define BN_div_word GRPC_SHADOW_BN_div_word
+#define BN_dup GRPC_SHADOW_BN_dup
+#define BN_enhanced_miller_rabin_primality_test GRPC_SHADOW_BN_enhanced_miller_rabin_primality_test
+#define BN_equal_consttime GRPC_SHADOW_BN_equal_consttime
+#define BN_exp GRPC_SHADOW_BN_exp
+#define bn_expand GRPC_SHADOW_bn_expand
+#define bn_fits_in_words GRPC_SHADOW_bn_fits_in_words
+#define BN_free GRPC_SHADOW_BN_free
+#define bn_from_montgomery GRPC_SHADOW_bn_from_montgomery
+#define BN_from_montgomery GRPC_SHADOW_BN_from_montgomery
+#define bn_from_montgomery_small GRPC_SHADOW_bn_from_montgomery_small
+#define bn_gather5 GRPC_SHADOW_bn_gather5
+#define BN_gcd GRPC_SHADOW_BN_gcd
+#define BN_GENCB_call GRPC_SHADOW_BN_GENCB_call
+#define BN_GENCB_set GRPC_SHADOW_BN_GENCB_set
+#define BN_generate_prime_ex GRPC_SHADOW_BN_generate_prime_ex
+#define BN_get_rfc3526_prime_1536 GRPC_SHADOW_BN_get_rfc3526_prime_1536
+#define BN_get_u64 GRPC_SHADOW_BN_get_u64
+#define BN_get_word GRPC_SHADOW_BN_get_word
+#define BN_hex2bn GRPC_SHADOW_BN_hex2bn
+#define BN_init GRPC_SHADOW_BN_init
+#define bn_in_range_words GRPC_SHADOW_bn_in_range_words
+#define BN_is_bit_set GRPC_SHADOW_BN_is_bit_set
+#define bn_is_bit_set_words GRPC_SHADOW_bn_is_bit_set_words
+#define BN_is_negative GRPC_SHADOW_BN_is_negative
+#define BN_is_odd GRPC_SHADOW_BN_is_odd
+#define BN_is_one GRPC_SHADOW_BN_is_one
+#define BN_is_pow2 GRPC_SHADOW_BN_is_pow2
+#define BN_is_prime_ex GRPC_SHADOW_BN_is_prime_ex
+#define BN_is_prime_fasttest_ex GRPC_SHADOW_BN_is_prime_fasttest_ex
+#define bn_is_relatively_prime GRPC_SHADOW_bn_is_relatively_prime
+#define BN_is_word GRPC_SHADOW_BN_is_word
+#define BN_is_zero GRPC_SHADOW_BN_is_zero
+#define bn_jacobi GRPC_SHADOW_bn_jacobi
+#define bn_lcm_consttime GRPC_SHADOW_bn_lcm_consttime
+#define BN_le2bn GRPC_SHADOW_BN_le2bn
+#define bn_less_than_montgomery_R GRPC_SHADOW_bn_less_than_montgomery_R
+#define bn_less_than_words GRPC_SHADOW_bn_less_than_words
+#define BN_lshift GRPC_SHADOW_BN_lshift
+#define BN_lshift1 GRPC_SHADOW_BN_lshift1
+#define BN_marshal_asn1 GRPC_SHADOW_BN_marshal_asn1
+#define BN_mask_bits GRPC_SHADOW_BN_mask_bits
+#define bn_miller_rabin_init GRPC_SHADOW_bn_miller_rabin_init
+#define bn_miller_rabin_iteration GRPC_SHADOW_bn_miller_rabin_iteration
+#define bn_minimal_width GRPC_SHADOW_bn_minimal_width
+#define BN_mod_add GRPC_SHADOW_BN_mod_add
+#define bn_mod_add_consttime GRPC_SHADOW_bn_mod_add_consttime
+#define BN_mod_add_quick GRPC_SHADOW_BN_mod_add_quick
+#define bn_mod_add_words GRPC_SHADOW_bn_mod_add_words
+#define BN_mod_exp GRPC_SHADOW_BN_mod_exp
+#define BN_mod_exp2_mont GRPC_SHADOW_BN_mod_exp2_mont
+#define bn_mod_exp_base_2_consttime GRPC_SHADOW_bn_mod_exp_base_2_consttime
+#define BN_mod_exp_mont GRPC_SHADOW_BN_mod_exp_mont
+#define BN_mod_exp_mont_consttime GRPC_SHADOW_BN_mod_exp_mont_consttime
+#define bn_mod_exp_mont_small GRPC_SHADOW_bn_mod_exp_mont_small
+#define BN_mod_exp_mont_word GRPC_SHADOW_BN_mod_exp_mont_word
+#define BN_mod_inverse GRPC_SHADOW_BN_mod_inverse
+#define BN_mod_inverse_blinded GRPC_SHADOW_BN_mod_inverse_blinded
+#define bn_mod_inverse_consttime GRPC_SHADOW_bn_mod_inverse_consttime
+#define BN_mod_inverse_odd GRPC_SHADOW_BN_mod_inverse_odd
+#define bn_mod_inverse_prime GRPC_SHADOW_bn_mod_inverse_prime
+#define bn_mod_inverse_prime_mont_small GRPC_SHADOW_bn_mod_inverse_prime_mont_small
+#define bn_mod_inverse_secret_prime GRPC_SHADOW_bn_mod_inverse_secret_prime
+#define BN_mod_lshift GRPC_SHADOW_BN_mod_lshift
+#define BN_mod_lshift1 GRPC_SHADOW_BN_mod_lshift1
+#define bn_mod_lshift1_consttime GRPC_SHADOW_bn_mod_lshift1_consttime
+#define BN_mod_lshift1_quick GRPC_SHADOW_BN_mod_lshift1_quick
+#define bn_mod_lshift_consttime GRPC_SHADOW_bn_mod_lshift_consttime
+#define BN_mod_lshift_quick GRPC_SHADOW_BN_mod_lshift_quick
+#define BN_mod_mul GRPC_SHADOW_BN_mod_mul
+#define BN_mod_mul_montgomery GRPC_SHADOW_BN_mod_mul_montgomery
+#define bn_mod_mul_montgomery_small GRPC_SHADOW_bn_mod_mul_montgomery_small
+#define BN_mod_pow2 GRPC_SHADOW_BN_mod_pow2
+#define BN_mod_sqr GRPC_SHADOW_BN_mod_sqr
+#define BN_mod_sqrt GRPC_SHADOW_BN_mod_sqrt
+#define BN_mod_sub GRPC_SHADOW_BN_mod_sub
+#define bn_mod_sub_consttime GRPC_SHADOW_bn_mod_sub_consttime
+#define BN_mod_sub_quick GRPC_SHADOW_BN_mod_sub_quick
+#define bn_mod_sub_words GRPC_SHADOW_bn_mod_sub_words
+#define bn_mod_u16_consttime GRPC_SHADOW_bn_mod_u16_consttime
+#define BN_mod_word GRPC_SHADOW_BN_mod_word
+#define BN_MONT_CTX_copy GRPC_SHADOW_BN_MONT_CTX_copy
+#define BN_MONT_CTX_free GRPC_SHADOW_BN_MONT_CTX_free
+#define BN_MONT_CTX_new GRPC_SHADOW_BN_MONT_CTX_new
+#define BN_MONT_CTX_new_consttime GRPC_SHADOW_BN_MONT_CTX_new_consttime
+#define BN_MONT_CTX_new_for_modulus GRPC_SHADOW_BN_MONT_CTX_new_for_modulus
+#define BN_MONT_CTX_set GRPC_SHADOW_BN_MONT_CTX_set
+#define BN_MONT_CTX_set_locked GRPC_SHADOW_BN_MONT_CTX_set_locked
+#define bn_mont_n0 GRPC_SHADOW_bn_mont_n0
+#define BN_mpi2bn GRPC_SHADOW_BN_mpi2bn
+#define BN_mul GRPC_SHADOW_BN_mul
+#define bn_mul_add_words GRPC_SHADOW_bn_mul_add_words
+#define bn_mul_comba4 GRPC_SHADOW_bn_mul_comba4
+#define bn_mul_comba8 GRPC_SHADOW_bn_mul_comba8
+#define bn_mul_consttime GRPC_SHADOW_bn_mul_consttime
+#define bn_mul_mont GRPC_SHADOW_bn_mul_mont
+#define bn_mul_mont_gather5 GRPC_SHADOW_bn_mul_mont_gather5
+#define bn_mul_small GRPC_SHADOW_bn_mul_small
+#define BN_mul_word GRPC_SHADOW_BN_mul_word
+#define bn_mul_words GRPC_SHADOW_bn_mul_words
+#define BN_new GRPC_SHADOW_BN_new
+#define BN_nnmod GRPC_SHADOW_BN_nnmod
+#define BN_nnmod_pow2 GRPC_SHADOW_BN_nnmod_pow2
+#define BN_num_bits GRPC_SHADOW_BN_num_bits
+#define BN_num_bits_word GRPC_SHADOW_BN_num_bits_word
+#define BN_num_bytes GRPC_SHADOW_BN_num_bytes
+#define bn_odd_number_is_obviously_composite GRPC_SHADOW_bn_odd_number_is_obviously_composite
+#define BN_one GRPC_SHADOW_BN_one
+#define bn_one_to_montgomery GRPC_SHADOW_bn_one_to_montgomery
+#define BN_parse_asn1_unsigned GRPC_SHADOW_BN_parse_asn1_unsigned
+#define bn_power5 GRPC_SHADOW_bn_power5
+#define BN_primality_test GRPC_SHADOW_BN_primality_test
+#define BN_print GRPC_SHADOW_BN_print
+#define BN_print_fp GRPC_SHADOW_BN_print_fp
+#define BN_pseudo_rand GRPC_SHADOW_BN_pseudo_rand
+#define BN_pseudo_rand_range GRPC_SHADOW_BN_pseudo_rand_range
+#define BN_rand GRPC_SHADOW_BN_rand
+#define BN_rand_range GRPC_SHADOW_BN_rand_range
+#define BN_rand_range_ex GRPC_SHADOW_BN_rand_range_ex
+#define bn_rand_range_words GRPC_SHADOW_bn_rand_range_words
+#define bn_rand_secret_range GRPC_SHADOW_bn_rand_secret_range
+#define bn_reduce_once GRPC_SHADOW_bn_reduce_once
+#define bn_reduce_once_in_place GRPC_SHADOW_bn_reduce_once_in_place
+#define bn_resize_words GRPC_SHADOW_bn_resize_words
+#define BN_rshift GRPC_SHADOW_BN_rshift
+#define BN_rshift1 GRPC_SHADOW_BN_rshift1
+#define bn_rshift1_words GRPC_SHADOW_bn_rshift1_words
+#define bn_rshift_secret_shift GRPC_SHADOW_bn_rshift_secret_shift
+#define bn_rshift_words GRPC_SHADOW_bn_rshift_words
+#define bn_scatter5 GRPC_SHADOW_bn_scatter5
+#define bn_select_words GRPC_SHADOW_bn_select_words
+#define BN_set_bit GRPC_SHADOW_BN_set_bit
+#define bn_set_minimal_width GRPC_SHADOW_bn_set_minimal_width
+#define BN_set_negative GRPC_SHADOW_BN_set_negative
+#define BN_set_u64 GRPC_SHADOW_BN_set_u64
+#define BN_set_word GRPC_SHADOW_BN_set_word
+#define bn_set_words GRPC_SHADOW_bn_set_words
+#define BN_sqr GRPC_SHADOW_BN_sqr
+#define bn_sqr8x_internal GRPC_SHADOW_bn_sqr8x_internal
+#define bn_sqr_comba4 GRPC_SHADOW_bn_sqr_comba4
+#define bn_sqr_comba8 GRPC_SHADOW_bn_sqr_comba8
+#define bn_sqr_consttime GRPC_SHADOW_bn_sqr_consttime
+#define bn_sqr_small GRPC_SHADOW_bn_sqr_small
+#define BN_sqrt GRPC_SHADOW_BN_sqrt
+#define bn_sqr_words GRPC_SHADOW_bn_sqr_words
+#define bn_sqrx8x_internal GRPC_SHADOW_bn_sqrx8x_internal
+#define BN_sub GRPC_SHADOW_BN_sub
+#define BN_sub_word GRPC_SHADOW_BN_sub_word
+#define bn_sub_words GRPC_SHADOW_bn_sub_words
+#define BN_to_ASN1_ENUMERATED GRPC_SHADOW_BN_to_ASN1_ENUMERATED
+#define BN_to_ASN1_INTEGER GRPC_SHADOW_BN_to_ASN1_INTEGER
+#define BN_to_montgomery GRPC_SHADOW_BN_to_montgomery
+#define bn_to_montgomery_small GRPC_SHADOW_bn_to_montgomery_small
+#define BN_uadd GRPC_SHADOW_BN_uadd
+#define bn_uadd_consttime GRPC_SHADOW_bn_uadd_consttime
+#define BN_ucmp GRPC_SHADOW_BN_ucmp
+#define BN_usub GRPC_SHADOW_BN_usub
+#define bn_usub_consttime GRPC_SHADOW_bn_usub_consttime
+#define BN_value_one GRPC_SHADOW_BN_value_one
+#define bn_wexpand GRPC_SHADOW_bn_wexpand
+#define BN_zero GRPC_SHADOW_BN_zero
+#define boringssl_fips_self_test GRPC_SHADOW_boringssl_fips_self_test
+#define BORINGSSL_self_test GRPC_SHADOW_BORINGSSL_self_test
+#define BUF_MEM_append GRPC_SHADOW_BUF_MEM_append
+#define BUF_memdup GRPC_SHADOW_BUF_memdup
+#define BUF_MEM_free GRPC_SHADOW_BUF_MEM_free
+#define BUF_MEM_grow GRPC_SHADOW_BUF_MEM_grow
+#define BUF_MEM_grow_clean GRPC_SHADOW_BUF_MEM_grow_clean
+#define BUF_MEM_new GRPC_SHADOW_BUF_MEM_new
+#define BUF_MEM_reserve GRPC_SHADOW_BUF_MEM_reserve
+#define BUF_strdup GRPC_SHADOW_BUF_strdup
+#define BUF_strlcat GRPC_SHADOW_BUF_strlcat
+#define BUF_strlcpy GRPC_SHADOW_BUF_strlcpy
+#define BUF_strndup GRPC_SHADOW_BUF_strndup
+#define BUF_strnlen GRPC_SHADOW_BUF_strnlen
+#define c2i_ASN1_BIT_STRING GRPC_SHADOW_c2i_ASN1_BIT_STRING
+#define c2i_ASN1_INTEGER GRPC_SHADOW_c2i_ASN1_INTEGER
+#define c2i_ASN1_OBJECT GRPC_SHADOW_c2i_ASN1_OBJECT
+#define CBB_add_asn1 GRPC_SHADOW_CBB_add_asn1
+#define CBB_add_asn1_bool GRPC_SHADOW_CBB_add_asn1_bool
+#define CBB_add_asn1_int64 GRPC_SHADOW_CBB_add_asn1_int64
+#define CBB_add_asn1_octet_string GRPC_SHADOW_CBB_add_asn1_octet_string
+#define CBB_add_asn1_oid_from_text GRPC_SHADOW_CBB_add_asn1_oid_from_text
+#define CBB_add_asn1_uint64 GRPC_SHADOW_CBB_add_asn1_uint64
+#define CBB_add_bytes GRPC_SHADOW_CBB_add_bytes
+#define cbb_add_latin1 GRPC_SHADOW_cbb_add_latin1
+#define CBB_add_space GRPC_SHADOW_CBB_add_space
+#define CBB_add_u16 GRPC_SHADOW_CBB_add_u16
+#define CBB_add_u16le GRPC_SHADOW_CBB_add_u16le
+#define CBB_add_u16_length_prefixed GRPC_SHADOW_CBB_add_u16_length_prefixed
+#define CBB_add_u24 GRPC_SHADOW_CBB_add_u24
+#define CBB_add_u24_length_prefixed GRPC_SHADOW_CBB_add_u24_length_prefixed
+#define CBB_add_u32 GRPC_SHADOW_CBB_add_u32
+#define CBB_add_u32le GRPC_SHADOW_CBB_add_u32le
+#define CBB_add_u64 GRPC_SHADOW_CBB_add_u64
+#define CBB_add_u64le GRPC_SHADOW_CBB_add_u64le
+#define CBB_add_u8 GRPC_SHADOW_CBB_add_u8
+#define CBB_add_u8_length_prefixed GRPC_SHADOW_CBB_add_u8_length_prefixed
+#define cbb_add_ucs2_be GRPC_SHADOW_cbb_add_ucs2_be
+#define cbb_add_utf32_be GRPC_SHADOW_cbb_add_utf32_be
+#define cbb_add_utf8 GRPC_SHADOW_cbb_add_utf8
+#define CBB_cleanup GRPC_SHADOW_CBB_cleanup
+#define CBB_data GRPC_SHADOW_CBB_data
+#define CBB_did_write GRPC_SHADOW_CBB_did_write
+#define CBB_discard_child GRPC_SHADOW_CBB_discard_child
+#define CBB_finish GRPC_SHADOW_CBB_finish
+#define CBB_finish_i2d GRPC_SHADOW_CBB_finish_i2d
+#define CBB_flush GRPC_SHADOW_CBB_flush
+#define CBB_flush_asn1_set_of GRPC_SHADOW_CBB_flush_asn1_set_of
+#define cbb_get_utf8_len GRPC_SHADOW_cbb_get_utf8_len
+#define CBB_init GRPC_SHADOW_CBB_init
+#define CBB_init_fixed GRPC_SHADOW_CBB_init_fixed
+#define CBB_len GRPC_SHADOW_CBB_len
+#define CBB_reserve GRPC_SHADOW_CBB_reserve
+#define CBB_zero GRPC_SHADOW_CBB_zero
+#define CBS_asn1_ber_to_der GRPC_SHADOW_CBS_asn1_ber_to_der
+#define CBS_asn1_bitstring_has_bit GRPC_SHADOW_CBS_asn1_bitstring_has_bit
+#define CBS_asn1_oid_to_text GRPC_SHADOW_CBS_asn1_oid_to_text
+#define CBS_contains_zero_byte GRPC_SHADOW_CBS_contains_zero_byte
+#define CBS_copy_bytes GRPC_SHADOW_CBS_copy_bytes
+#define CBS_data GRPC_SHADOW_CBS_data
+#define CBS_get_any_asn1 GRPC_SHADOW_CBS_get_any_asn1
+#define CBS_get_any_asn1_element GRPC_SHADOW_CBS_get_any_asn1_element
+#define CBS_get_any_ber_asn1_element GRPC_SHADOW_CBS_get_any_ber_asn1_element
+#define CBS_get_asn1 GRPC_SHADOW_CBS_get_asn1
+#define CBS_get_asn1_bool GRPC_SHADOW_CBS_get_asn1_bool
+#define CBS_get_asn1_element GRPC_SHADOW_CBS_get_asn1_element
+#define CBS_get_asn1_implicit_string GRPC_SHADOW_CBS_get_asn1_implicit_string
+#define CBS_get_asn1_int64 GRPC_SHADOW_CBS_get_asn1_int64
+#define CBS_get_asn1_uint64 GRPC_SHADOW_CBS_get_asn1_uint64
+#define CBS_get_bytes GRPC_SHADOW_CBS_get_bytes
+#define CBS_get_last_u8 GRPC_SHADOW_CBS_get_last_u8
+#define cbs_get_latin1 GRPC_SHADOW_cbs_get_latin1
+#define CBS_get_optional_asn1 GRPC_SHADOW_CBS_get_optional_asn1
+#define CBS_get_optional_asn1_bool GRPC_SHADOW_CBS_get_optional_asn1_bool
+#define CBS_get_optional_asn1_octet_string GRPC_SHADOW_CBS_get_optional_asn1_octet_string
+#define CBS_get_optional_asn1_uint64 GRPC_SHADOW_CBS_get_optional_asn1_uint64
+#define CBS_get_u16 GRPC_SHADOW_CBS_get_u16
+#define CBS_get_u16le GRPC_SHADOW_CBS_get_u16le
+#define CBS_get_u16_length_prefixed GRPC_SHADOW_CBS_get_u16_length_prefixed
+#define CBS_get_u24 GRPC_SHADOW_CBS_get_u24
+#define CBS_get_u24_length_prefixed GRPC_SHADOW_CBS_get_u24_length_prefixed
+#define CBS_get_u32 GRPC_SHADOW_CBS_get_u32
+#define CBS_get_u32le GRPC_SHADOW_CBS_get_u32le
+#define CBS_get_u64 GRPC_SHADOW_CBS_get_u64
+#define CBS_get_u64le GRPC_SHADOW_CBS_get_u64le
+#define CBS_get_u8 GRPC_SHADOW_CBS_get_u8
+#define CBS_get_u8_length_prefixed GRPC_SHADOW_CBS_get_u8_length_prefixed
+#define cbs_get_ucs2_be GRPC_SHADOW_cbs_get_ucs2_be
+#define cbs_get_utf32_be GRPC_SHADOW_cbs_get_utf32_be
+#define cbs_get_utf8 GRPC_SHADOW_cbs_get_utf8
+#define CBS_init GRPC_SHADOW_CBS_init
+#define CBS_is_valid_asn1_bitstring GRPC_SHADOW_CBS_is_valid_asn1_bitstring
+#define CBS_len GRPC_SHADOW_CBS_len
+#define CBS_mem_equal GRPC_SHADOW_CBS_mem_equal
+#define CBS_peek_asn1_tag GRPC_SHADOW_CBS_peek_asn1_tag
+#define CBS_skip GRPC_SHADOW_CBS_skip
+#define CBS_stow GRPC_SHADOW_CBS_stow
+#define CBS_strdup GRPC_SHADOW_CBS_strdup
+#define CERTIFICATEPOLICIES_free GRPC_SHADOW_CERTIFICATEPOLICIES_free
+#define CERTIFICATEPOLICIES_it GRPC_SHADOW_CERTIFICATEPOLICIES_it
+#define CERTIFICATEPOLICIES_new GRPC_SHADOW_CERTIFICATEPOLICIES_new
+#define ChaCha20_ctr32 GRPC_SHADOW_ChaCha20_ctr32
+#define chacha20_poly1305_open GRPC_SHADOW_chacha20_poly1305_open
+#define chacha20_poly1305_seal GRPC_SHADOW_chacha20_poly1305_seal
+#define CMAC_CTX_copy GRPC_SHADOW_CMAC_CTX_copy
+#define CMAC_CTX_free GRPC_SHADOW_CMAC_CTX_free
+#define CMAC_CTX_new GRPC_SHADOW_CMAC_CTX_new
+#define CMAC_Final GRPC_SHADOW_CMAC_Final
+#define CMAC_Init GRPC_SHADOW_CMAC_Init
+#define CMAC_Reset GRPC_SHADOW_CMAC_Reset
+#define CMAC_Update GRPC_SHADOW_CMAC_Update
+#define CONF_modules_free GRPC_SHADOW_CONF_modules_free
+#define CONF_modules_load_file GRPC_SHADOW_CONF_modules_load_file
+#define CONF_parse_list GRPC_SHADOW_CONF_parse_list
+#define CONF_VALUE_new GRPC_SHADOW_CONF_VALUE_new
+#define CRL_DIST_POINTS_free GRPC_SHADOW_CRL_DIST_POINTS_free
+#define CRL_DIST_POINTS_it GRPC_SHADOW_CRL_DIST_POINTS_it
+#define CRL_DIST_POINTS_new GRPC_SHADOW_CRL_DIST_POINTS_new
+#define CRYPTO_BUFFER_alloc GRPC_SHADOW_CRYPTO_BUFFER_alloc
+#define CRYPTO_BUFFER_data GRPC_SHADOW_CRYPTO_BUFFER_data
+#define CRYPTO_BUFFER_free GRPC_SHADOW_CRYPTO_BUFFER_free
+#define CRYPTO_BUFFER_init_CBS GRPC_SHADOW_CRYPTO_BUFFER_init_CBS
+#define CRYPTO_BUFFER_len GRPC_SHADOW_CRYPTO_BUFFER_len
+#define CRYPTO_BUFFER_new GRPC_SHADOW_CRYPTO_BUFFER_new
+#define CRYPTO_BUFFER_new_from_CBS GRPC_SHADOW_CRYPTO_BUFFER_new_from_CBS
+#define CRYPTO_BUFFER_POOL_free GRPC_SHADOW_CRYPTO_BUFFER_POOL_free
+#define CRYPTO_BUFFER_POOL_new GRPC_SHADOW_CRYPTO_BUFFER_POOL_new
+#define CRYPTO_BUFFER_up_ref GRPC_SHADOW_CRYPTO_BUFFER_up_ref
+#define CRYPTO_cbc128_decrypt GRPC_SHADOW_CRYPTO_cbc128_decrypt
+#define CRYPTO_cbc128_encrypt GRPC_SHADOW_CRYPTO_cbc128_encrypt
+#define CRYPTO_cfb128_1_encrypt GRPC_SHADOW_CRYPTO_cfb128_1_encrypt
+#define CRYPTO_cfb128_8_encrypt GRPC_SHADOW_CRYPTO_cfb128_8_encrypt
+#define CRYPTO_cfb128_encrypt GRPC_SHADOW_CRYPTO_cfb128_encrypt
+#define CRYPTO_chacha_20 GRPC_SHADOW_CRYPTO_chacha_20
+#define CRYPTO_cleanup_all_ex_data GRPC_SHADOW_CRYPTO_cleanup_all_ex_data
+#define CRYPTO_ctr128_encrypt GRPC_SHADOW_CRYPTO_ctr128_encrypt
+#define CRYPTO_ctr128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_ctr128_encrypt_ctr32
+#define CRYPTO_free_ex_data GRPC_SHADOW_CRYPTO_free_ex_data
+#define CRYPTO_gcm128_aad GRPC_SHADOW_CRYPTO_gcm128_aad
+#define CRYPTO_gcm128_decrypt GRPC_SHADOW_CRYPTO_gcm128_decrypt
+#define CRYPTO_gcm128_decrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_decrypt_ctr32
+#define CRYPTO_gcm128_encrypt GRPC_SHADOW_CRYPTO_gcm128_encrypt
+#define CRYPTO_gcm128_encrypt_ctr32 GRPC_SHADOW_CRYPTO_gcm128_encrypt_ctr32
+#define CRYPTO_gcm128_finish GRPC_SHADOW_CRYPTO_gcm128_finish
+#define CRYPTO_gcm128_init_key GRPC_SHADOW_CRYPTO_gcm128_init_key
+#define CRYPTO_gcm128_setiv GRPC_SHADOW_CRYPTO_gcm128_setiv
+#define CRYPTO_gcm128_tag GRPC_SHADOW_CRYPTO_gcm128_tag
+#define crypto_gcm_clmul_enabled GRPC_SHADOW_crypto_gcm_clmul_enabled
+#define CRYPTO_get_dynlock_create_callback GRPC_SHADOW_CRYPTO_get_dynlock_create_callback
+#define CRYPTO_get_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_get_dynlock_destroy_callback
+#define CRYPTO_get_dynlock_lock_callback GRPC_SHADOW_CRYPTO_get_dynlock_lock_callback
+#define CRYPTO_get_ex_data GRPC_SHADOW_CRYPTO_get_ex_data
+#define CRYPTO_get_ex_new_index GRPC_SHADOW_CRYPTO_get_ex_new_index
+#define CRYPTO_get_locking_callback GRPC_SHADOW_CRYPTO_get_locking_callback
+#define CRYPTO_get_lock_name GRPC_SHADOW_CRYPTO_get_lock_name
+#define CRYPTO_get_thread_local GRPC_SHADOW_CRYPTO_get_thread_local
+#define CRYPTO_ghash_init GRPC_SHADOW_CRYPTO_ghash_init
+#define CRYPTO_has_asm GRPC_SHADOW_CRYPTO_has_asm
+#define CRYPTO_hchacha20 GRPC_SHADOW_CRYPTO_hchacha20
+#define CRYPTO_is_confidential_build GRPC_SHADOW_CRYPTO_is_confidential_build
+#define CRYPTO_library_init GRPC_SHADOW_CRYPTO_library_init
+#define CRYPTO_malloc_init GRPC_SHADOW_CRYPTO_malloc_init
+#define CRYPTO_memcmp GRPC_SHADOW_CRYPTO_memcmp
+#define CRYPTO_MUTEX_cleanup GRPC_SHADOW_CRYPTO_MUTEX_cleanup
+#define CRYPTO_MUTEX_init GRPC_SHADOW_CRYPTO_MUTEX_init
+#define CRYPTO_MUTEX_lock_read GRPC_SHADOW_CRYPTO_MUTEX_lock_read
+#define CRYPTO_MUTEX_lock_write GRPC_SHADOW_CRYPTO_MUTEX_lock_write
+#define CRYPTO_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_MUTEX_unlock_read
+#define CRYPTO_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_MUTEX_unlock_write
+#define CRYPTO_new_ex_data GRPC_SHADOW_CRYPTO_new_ex_data
+#define CRYPTO_num_locks GRPC_SHADOW_CRYPTO_num_locks
+#define CRYPTO_ofb128_encrypt GRPC_SHADOW_CRYPTO_ofb128_encrypt
+#define CRYPTO_once GRPC_SHADOW_CRYPTO_once
+#define CRYPTO_poly1305_finish GRPC_SHADOW_CRYPTO_poly1305_finish
+#define CRYPTO_poly1305_init GRPC_SHADOW_CRYPTO_poly1305_init
+#define CRYPTO_poly1305_update GRPC_SHADOW_CRYPTO_poly1305_update
+#define CRYPTO_POLYVAL_finish GRPC_SHADOW_CRYPTO_POLYVAL_finish
+#define CRYPTO_POLYVAL_init GRPC_SHADOW_CRYPTO_POLYVAL_init
+#define CRYPTO_POLYVAL_update_blocks GRPC_SHADOW_CRYPTO_POLYVAL_update_blocks
+#define CRYPTO_rdrand GRPC_SHADOW_CRYPTO_rdrand
+#define CRYPTO_rdrand_multiple8_buf GRPC_SHADOW_CRYPTO_rdrand_multiple8_buf
+#define CRYPTO_refcount_dec_and_test_zero GRPC_SHADOW_CRYPTO_refcount_dec_and_test_zero
+#define CRYPTO_refcount_inc GRPC_SHADOW_CRYPTO_refcount_inc
+#define CRYPTO_set_add_lock_callback GRPC_SHADOW_CRYPTO_set_add_lock_callback
+#define CRYPTO_set_dynlock_create_callback GRPC_SHADOW_CRYPTO_set_dynlock_create_callback
+#define CRYPTO_set_dynlock_destroy_callback GRPC_SHADOW_CRYPTO_set_dynlock_destroy_callback
+#define CRYPTO_set_dynlock_lock_callback GRPC_SHADOW_CRYPTO_set_dynlock_lock_callback
+#define CRYPTO_set_ex_data GRPC_SHADOW_CRYPTO_set_ex_data
+#define CRYPTO_set_id_callback GRPC_SHADOW_CRYPTO_set_id_callback
+#define CRYPTO_set_locking_callback GRPC_SHADOW_CRYPTO_set_locking_callback
+#define CRYPTO_set_thread_local GRPC_SHADOW_CRYPTO_set_thread_local
+#define CRYPTO_STATIC_MUTEX_lock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_read
+#define CRYPTO_STATIC_MUTEX_lock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_lock_write
+#define CRYPTO_STATIC_MUTEX_unlock_read GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_read
+#define CRYPTO_STATIC_MUTEX_unlock_write GRPC_SHADOW_CRYPTO_STATIC_MUTEX_unlock_write
+#define CRYPTO_sysrand GRPC_SHADOW_CRYPTO_sysrand
+#define CRYPTO_THREADID_current GRPC_SHADOW_CRYPTO_THREADID_current
+#define CRYPTO_THREADID_set_callback GRPC_SHADOW_CRYPTO_THREADID_set_callback
+#define CRYPTO_THREADID_set_numeric GRPC_SHADOW_CRYPTO_THREADID_set_numeric
+#define CRYPTO_THREADID_set_pointer GRPC_SHADOW_CRYPTO_THREADID_set_pointer
+#define CRYPTO_tls1_prf GRPC_SHADOW_CRYPTO_tls1_prf
+#define CTR_DRBG_clear GRPC_SHADOW_CTR_DRBG_clear
+#define CTR_DRBG_generate GRPC_SHADOW_CTR_DRBG_generate
+#define CTR_DRBG_init GRPC_SHADOW_CTR_DRBG_init
+#define CTR_DRBG_reseed GRPC_SHADOW_CTR_DRBG_reseed
+#define d2i_ACCESS_DESCRIPTION GRPC_SHADOW_d2i_ACCESS_DESCRIPTION
+#define d2i_ASN1_BIT_STRING GRPC_SHADOW_d2i_ASN1_BIT_STRING
+#define d2i_ASN1_BMPSTRING GRPC_SHADOW_d2i_ASN1_BMPSTRING
+#define d2i_ASN1_BOOLEAN GRPC_SHADOW_d2i_ASN1_BOOLEAN
+#define d2i_ASN1_ENUMERATED GRPC_SHADOW_d2i_ASN1_ENUMERATED
+#define d2i_ASN1_GENERALIZEDTIME GRPC_SHADOW_d2i_ASN1_GENERALIZEDTIME
+#define d2i_ASN1_GENERALSTRING GRPC_SHADOW_d2i_ASN1_GENERALSTRING
+#define d2i_ASN1_IA5STRING GRPC_SHADOW_d2i_ASN1_IA5STRING
+#define d2i_ASN1_INTEGER GRPC_SHADOW_d2i_ASN1_INTEGER
+#define d2i_ASN1_NULL GRPC_SHADOW_d2i_ASN1_NULL
+#define d2i_ASN1_OBJECT GRPC_SHADOW_d2i_ASN1_OBJECT
+#define d2i_ASN1_OCTET_STRING GRPC_SHADOW_d2i_ASN1_OCTET_STRING
+#define d2i_ASN1_PRINTABLE GRPC_SHADOW_d2i_ASN1_PRINTABLE
+#define d2i_ASN1_PRINTABLESTRING GRPC_SHADOW_d2i_ASN1_PRINTABLESTRING
+#define d2i_ASN1_SEQUENCE_ANY GRPC_SHADOW_d2i_ASN1_SEQUENCE_ANY
+#define d2i_ASN1_SET_ANY GRPC_SHADOW_d2i_ASN1_SET_ANY
+#define d2i_ASN1_T61STRING GRPC_SHADOW_d2i_ASN1_T61STRING
+#define d2i_ASN1_TIME GRPC_SHADOW_d2i_ASN1_TIME
+#define d2i_ASN1_TYPE GRPC_SHADOW_d2i_ASN1_TYPE
+#define d2i_ASN1_UNIVERSALSTRING GRPC_SHADOW_d2i_ASN1_UNIVERSALSTRING
+#define d2i_ASN1_UTCTIME GRPC_SHADOW_d2i_ASN1_UTCTIME
+#define d2i_ASN1_UTF8STRING GRPC_SHADOW_d2i_ASN1_UTF8STRING
+#define d2i_ASN1_VISIBLESTRING GRPC_SHADOW_d2i_ASN1_VISIBLESTRING
+#define d2i_AUTHORITY_INFO_ACCESS GRPC_SHADOW_d2i_AUTHORITY_INFO_ACCESS
+#define d2i_AUTHORITY_KEYID GRPC_SHADOW_d2i_AUTHORITY_KEYID
+#define d2i_AutoPrivateKey GRPC_SHADOW_d2i_AutoPrivateKey
+#define d2i_BASIC_CONSTRAINTS GRPC_SHADOW_d2i_BASIC_CONSTRAINTS
+#define d2i_CERTIFICATEPOLICIES GRPC_SHADOW_d2i_CERTIFICATEPOLICIES
+#define d2i_CRL_DIST_POINTS GRPC_SHADOW_d2i_CRL_DIST_POINTS
+#define d2i_DHparams GRPC_SHADOW_d2i_DHparams
+#define d2i_DHparams_bio GRPC_SHADOW_d2i_DHparams_bio
+#define d2i_DIRECTORYSTRING GRPC_SHADOW_d2i_DIRECTORYSTRING
+#define d2i_DISPLAYTEXT GRPC_SHADOW_d2i_DISPLAYTEXT
+#define d2i_DIST_POINT GRPC_SHADOW_d2i_DIST_POINT
+#define d2i_DIST_POINT_NAME GRPC_SHADOW_d2i_DIST_POINT_NAME
+#define d2i_DSAparams GRPC_SHADOW_d2i_DSAparams
+#define d2i_DSAPrivateKey GRPC_SHADOW_d2i_DSAPrivateKey
+#define d2i_DSAPrivateKey_bio GRPC_SHADOW_d2i_DSAPrivateKey_bio
+#define d2i_DSAPrivateKey_fp GRPC_SHADOW_d2i_DSAPrivateKey_fp
+#define d2i_DSA_PUBKEY GRPC_SHADOW_d2i_DSA_PUBKEY
+#define d2i_DSA_PUBKEY_bio GRPC_SHADOW_d2i_DSA_PUBKEY_bio
+#define d2i_DSA_PUBKEY_fp GRPC_SHADOW_d2i_DSA_PUBKEY_fp
+#define d2i_DSAPublicKey GRPC_SHADOW_d2i_DSAPublicKey
+#define d2i_DSA_SIG GRPC_SHADOW_d2i_DSA_SIG
+#define d2i_ECDSA_SIG GRPC_SHADOW_d2i_ECDSA_SIG
+#define d2i_ECParameters GRPC_SHADOW_d2i_ECParameters
+#define d2i_ECPrivateKey GRPC_SHADOW_d2i_ECPrivateKey
+#define d2i_ECPrivateKey_bio GRPC_SHADOW_d2i_ECPrivateKey_bio
+#define d2i_ECPrivateKey_fp GRPC_SHADOW_d2i_ECPrivateKey_fp
+#define d2i_EC_PUBKEY GRPC_SHADOW_d2i_EC_PUBKEY
+#define d2i_EC_PUBKEY_bio GRPC_SHADOW_d2i_EC_PUBKEY_bio
+#define d2i_EC_PUBKEY_fp GRPC_SHADOW_d2i_EC_PUBKEY_fp
+#define d2i_EDIPARTYNAME GRPC_SHADOW_d2i_EDIPARTYNAME
+#define d2i_EXTENDED_KEY_USAGE GRPC_SHADOW_d2i_EXTENDED_KEY_USAGE
+#define d2i_GENERAL_NAME GRPC_SHADOW_d2i_GENERAL_NAME
+#define d2i_GENERAL_NAMES GRPC_SHADOW_d2i_GENERAL_NAMES
+#define d2i_ISSUING_DIST_POINT GRPC_SHADOW_d2i_ISSUING_DIST_POINT
+#define d2i_NETSCAPE_SPKAC GRPC_SHADOW_d2i_NETSCAPE_SPKAC
+#define d2i_NETSCAPE_SPKI GRPC_SHADOW_d2i_NETSCAPE_SPKI
+#define d2i_NOTICEREF GRPC_SHADOW_d2i_NOTICEREF
+#define d2i_OTHERNAME GRPC_SHADOW_d2i_OTHERNAME
+#define d2i_PKCS12 GRPC_SHADOW_d2i_PKCS12
+#define d2i_PKCS12_bio GRPC_SHADOW_d2i_PKCS12_bio
+#define d2i_PKCS12_fp GRPC_SHADOW_d2i_PKCS12_fp
+#define d2i_PKCS7 GRPC_SHADOW_d2i_PKCS7
+#define d2i_PKCS7_bio GRPC_SHADOW_d2i_PKCS7_bio
+#define d2i_PKCS8_bio GRPC_SHADOW_d2i_PKCS8_bio
+#define d2i_PKCS8_fp GRPC_SHADOW_d2i_PKCS8_fp
+#define d2i_PKCS8PrivateKey_bio GRPC_SHADOW_d2i_PKCS8PrivateKey_bio
+#define d2i_PKCS8PrivateKey_fp GRPC_SHADOW_d2i_PKCS8PrivateKey_fp
+#define d2i_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO
+#define d2i_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_bio
+#define d2i_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_d2i_PKCS8_PRIV_KEY_INFO_fp
+#define d2i_PKEY_USAGE_PERIOD GRPC_SHADOW_d2i_PKEY_USAGE_PERIOD
+#define d2i_POLICYINFO GRPC_SHADOW_d2i_POLICYINFO
+#define d2i_POLICYQUALINFO GRPC_SHADOW_d2i_POLICYQUALINFO
+#define d2i_PrivateKey GRPC_SHADOW_d2i_PrivateKey
+#define d2i_PrivateKey_bio GRPC_SHADOW_d2i_PrivateKey_bio
+#define d2i_PrivateKey_fp GRPC_SHADOW_d2i_PrivateKey_fp
+#define d2i_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_d2i_PROXY_CERT_INFO_EXTENSION
+#define d2i_PROXY_POLICY GRPC_SHADOW_d2i_PROXY_POLICY
+#define d2i_PUBKEY GRPC_SHADOW_d2i_PUBKEY
+#define d2i_PUBKEY_bio GRPC_SHADOW_d2i_PUBKEY_bio
+#define d2i_PUBKEY_fp GRPC_SHADOW_d2i_PUBKEY_fp
+#define d2i_PublicKey GRPC_SHADOW_d2i_PublicKey
+#define d2i_RSAPrivateKey GRPC_SHADOW_d2i_RSAPrivateKey
+#define d2i_RSAPrivateKey_bio GRPC_SHADOW_d2i_RSAPrivateKey_bio
+#define d2i_RSAPrivateKey_fp GRPC_SHADOW_d2i_RSAPrivateKey_fp
+#define d2i_RSA_PSS_PARAMS GRPC_SHADOW_d2i_RSA_PSS_PARAMS
+#define d2i_RSA_PUBKEY GRPC_SHADOW_d2i_RSA_PUBKEY
+#define d2i_RSA_PUBKEY_bio GRPC_SHADOW_d2i_RSA_PUBKEY_bio
+#define d2i_RSA_PUBKEY_fp GRPC_SHADOW_d2i_RSA_PUBKEY_fp
+#define d2i_RSAPublicKey GRPC_SHADOW_d2i_RSAPublicKey
+#define d2i_RSAPublicKey_bio GRPC_SHADOW_d2i_RSAPublicKey_bio
+#define d2i_RSAPublicKey_fp GRPC_SHADOW_d2i_RSAPublicKey_fp
+#define d2i_SSL_SESSION GRPC_SHADOW_d2i_SSL_SESSION
+#define d2i_SSL_SESSION_bio GRPC_SHADOW_d2i_SSL_SESSION_bio
+#define d2i_SXNET GRPC_SHADOW_d2i_SXNET
+#define d2i_SXNETID GRPC_SHADOW_d2i_SXNETID
+#define d2i_USERNOTICE GRPC_SHADOW_d2i_USERNOTICE
+#define d2i_X509 GRPC_SHADOW_d2i_X509
+#define d2i_X509_ALGOR GRPC_SHADOW_d2i_X509_ALGOR
+#define d2i_X509_ALGORS GRPC_SHADOW_d2i_X509_ALGORS
+#define d2i_X509_ATTRIBUTE GRPC_SHADOW_d2i_X509_ATTRIBUTE
+#define d2i_X509_AUX GRPC_SHADOW_d2i_X509_AUX
+#define d2i_X509_bio GRPC_SHADOW_d2i_X509_bio
+#define d2i_X509_CERT_AUX GRPC_SHADOW_d2i_X509_CERT_AUX
+#define d2i_X509_CINF GRPC_SHADOW_d2i_X509_CINF
+#define d2i_X509_CRL GRPC_SHADOW_d2i_X509_CRL
+#define d2i_X509_CRL_bio GRPC_SHADOW_d2i_X509_CRL_bio
+#define d2i_X509_CRL_fp GRPC_SHADOW_d2i_X509_CRL_fp
+#define d2i_X509_CRL_INFO GRPC_SHADOW_d2i_X509_CRL_INFO
+#define d2i_X509_EXTENSION GRPC_SHADOW_d2i_X509_EXTENSION
+#define d2i_X509_EXTENSIONS GRPC_SHADOW_d2i_X509_EXTENSIONS
+#define d2i_X509_fp GRPC_SHADOW_d2i_X509_fp
+#define d2i_X509_NAME GRPC_SHADOW_d2i_X509_NAME
+#define d2i_X509_NAME_ENTRY GRPC_SHADOW_d2i_X509_NAME_ENTRY
+#define d2i_X509_PUBKEY GRPC_SHADOW_d2i_X509_PUBKEY
+#define d2i_X509_REQ GRPC_SHADOW_d2i_X509_REQ
+#define d2i_X509_REQ_bio GRPC_SHADOW_d2i_X509_REQ_bio
+#define d2i_X509_REQ_fp GRPC_SHADOW_d2i_X509_REQ_fp
+#define d2i_X509_REQ_INFO GRPC_SHADOW_d2i_X509_REQ_INFO
+#define d2i_X509_REVOKED GRPC_SHADOW_d2i_X509_REVOKED
+#define d2i_X509_SIG GRPC_SHADOW_d2i_X509_SIG
+#define d2i_X509_VAL GRPC_SHADOW_d2i_X509_VAL
+#define DES_decrypt3 GRPC_SHADOW_DES_decrypt3
+#define DES_ecb3_encrypt GRPC_SHADOW_DES_ecb3_encrypt
+#define DES_ecb_encrypt GRPC_SHADOW_DES_ecb_encrypt
+#define DES_ede2_cbc_encrypt GRPC_SHADOW_DES_ede2_cbc_encrypt
+#define DES_ede3_cbc_encrypt GRPC_SHADOW_DES_ede3_cbc_encrypt
+#define DES_encrypt3 GRPC_SHADOW_DES_encrypt3
+#define DES_ncbc_encrypt GRPC_SHADOW_DES_ncbc_encrypt
+#define DES_set_key GRPC_SHADOW_DES_set_key
+#define DES_set_key_unchecked GRPC_SHADOW_DES_set_key_unchecked
+#define DES_set_odd_parity GRPC_SHADOW_DES_set_odd_parity
+#define DH_check GRPC_SHADOW_DH_check
+#define DH_check_pub_key GRPC_SHADOW_DH_check_pub_key
+#define DH_compute_key GRPC_SHADOW_DH_compute_key
+#define DH_free GRPC_SHADOW_DH_free
+#define DH_generate_key GRPC_SHADOW_DH_generate_key
+#define DH_generate_parameters_ex GRPC_SHADOW_DH_generate_parameters_ex
+#define DH_get0_key GRPC_SHADOW_DH_get0_key
+#define DH_get0_pqg GRPC_SHADOW_DH_get0_pqg
+#define DH_get_ex_data GRPC_SHADOW_DH_get_ex_data
+#define DH_get_ex_new_index GRPC_SHADOW_DH_get_ex_new_index
+#define DH_marshal_parameters GRPC_SHADOW_DH_marshal_parameters
+#define DH_new GRPC_SHADOW_DH_new
+#define DH_num_bits GRPC_SHADOW_DH_num_bits
+#define DHparams_dup GRPC_SHADOW_DHparams_dup
+#define DH_parse_parameters GRPC_SHADOW_DH_parse_parameters
+#define DH_set0_key GRPC_SHADOW_DH_set0_key
+#define DH_set0_pqg GRPC_SHADOW_DH_set0_pqg
+#define DH_set_ex_data GRPC_SHADOW_DH_set_ex_data
+#define DH_size GRPC_SHADOW_DH_size
+#define DH_up_ref GRPC_SHADOW_DH_up_ref
+#define DIRECTORYSTRING_free GRPC_SHADOW_DIRECTORYSTRING_free
+#define DIRECTORYSTRING_it GRPC_SHADOW_DIRECTORYSTRING_it
+#define DIRECTORYSTRING_new GRPC_SHADOW_DIRECTORYSTRING_new
+#define DISPLAYTEXT_free GRPC_SHADOW_DISPLAYTEXT_free
+#define DISPLAYTEXT_it GRPC_SHADOW_DISPLAYTEXT_it
+#define DISPLAYTEXT_new GRPC_SHADOW_DISPLAYTEXT_new
+#define DIST_POINT_free GRPC_SHADOW_DIST_POINT_free
+#define DIST_POINT_it GRPC_SHADOW_DIST_POINT_it
+#define DIST_POINT_NAME_free GRPC_SHADOW_DIST_POINT_NAME_free
+#define DIST_POINT_NAME_it GRPC_SHADOW_DIST_POINT_NAME_it
+#define DIST_POINT_NAME_new GRPC_SHADOW_DIST_POINT_NAME_new
+#define DIST_POINT_new GRPC_SHADOW_DIST_POINT_new
+#define DIST_POINT_set_dpname GRPC_SHADOW_DIST_POINT_set_dpname
+#define dsa_asn1_meth GRPC_SHADOW_dsa_asn1_meth
+#define DSA_check_signature GRPC_SHADOW_DSA_check_signature
+#define DSA_do_check_signature GRPC_SHADOW_DSA_do_check_signature
+#define DSA_do_sign GRPC_SHADOW_DSA_do_sign
+#define DSA_do_verify GRPC_SHADOW_DSA_do_verify
+#define DSA_dup_DH GRPC_SHADOW_DSA_dup_DH
+#define DSA_free GRPC_SHADOW_DSA_free
+#define DSA_generate_key GRPC_SHADOW_DSA_generate_key
+#define DSA_generate_parameters_ex GRPC_SHADOW_DSA_generate_parameters_ex
+#define DSA_get0_key GRPC_SHADOW_DSA_get0_key
+#define DSA_get0_pqg GRPC_SHADOW_DSA_get0_pqg
+#define DSA_get_ex_data GRPC_SHADOW_DSA_get_ex_data
+#define DSA_get_ex_new_index GRPC_SHADOW_DSA_get_ex_new_index
+#define DSA_marshal_parameters GRPC_SHADOW_DSA_marshal_parameters
+#define DSA_marshal_private_key GRPC_SHADOW_DSA_marshal_private_key
+#define DSA_marshal_public_key GRPC_SHADOW_DSA_marshal_public_key
+#define DSA_new GRPC_SHADOW_DSA_new
+#define DSAparams_dup GRPC_SHADOW_DSAparams_dup
+#define DSA_parse_parameters GRPC_SHADOW_DSA_parse_parameters
+#define DSA_parse_private_key GRPC_SHADOW_DSA_parse_private_key
+#define DSA_parse_public_key GRPC_SHADOW_DSA_parse_public_key
+#define DSA_set0_key GRPC_SHADOW_DSA_set0_key
+#define DSA_set0_pqg GRPC_SHADOW_DSA_set0_pqg
+#define DSA_set_ex_data GRPC_SHADOW_DSA_set_ex_data
+#define DSA_SIG_free GRPC_SHADOW_DSA_SIG_free
+#define DSA_SIG_marshal GRPC_SHADOW_DSA_SIG_marshal
+#define DSA_sign GRPC_SHADOW_DSA_sign
+#define DSA_SIG_new GRPC_SHADOW_DSA_SIG_new
+#define DSA_SIG_parse GRPC_SHADOW_DSA_SIG_parse
+#define DSA_size GRPC_SHADOW_DSA_size
+#define DSA_up_ref GRPC_SHADOW_DSA_up_ref
+#define DSA_verify GRPC_SHADOW_DSA_verify
+#define DTLS_client_method GRPC_SHADOW_DTLS_client_method
+#define DTLS_method GRPC_SHADOW_DTLS_method
+#define DTLS_server_method GRPC_SHADOW_DTLS_server_method
+#define DTLSv1_2_client_method GRPC_SHADOW_DTLSv1_2_client_method
+#define DTLSv1_2_method GRPC_SHADOW_DTLSv1_2_method
+#define DTLSv1_2_server_method GRPC_SHADOW_DTLSv1_2_server_method
+#define DTLSv1_client_method GRPC_SHADOW_DTLSv1_client_method
+#define DTLSv1_get_timeout GRPC_SHADOW_DTLSv1_get_timeout
+#define DTLSv1_handle_timeout GRPC_SHADOW_DTLSv1_handle_timeout
+#define DTLSv1_method GRPC_SHADOW_DTLSv1_method
+#define DTLSv1_server_method GRPC_SHADOW_DTLSv1_server_method
+#define DTLSv1_set_initial_timeout_duration GRPC_SHADOW_DTLSv1_set_initial_timeout_duration
+#define DTLS_with_buffers_method GRPC_SHADOW_DTLS_with_buffers_method
+#define ec_asn1_meth GRPC_SHADOW_ec_asn1_meth
+#define ec_bignum_to_felem GRPC_SHADOW_ec_bignum_to_felem
+#define ec_bignum_to_scalar GRPC_SHADOW_ec_bignum_to_scalar
+#define ec_cmp_x_coordinate GRPC_SHADOW_ec_cmp_x_coordinate
+#define ec_compute_wNAF GRPC_SHADOW_ec_compute_wNAF
+#define EC_curve_nid2nist GRPC_SHADOW_EC_curve_nid2nist
+#define EC_curve_nist2nid GRPC_SHADOW_EC_curve_nist2nid
+#define ECDH_compute_key GRPC_SHADOW_ECDH_compute_key
+#define ECDH_compute_key_fips GRPC_SHADOW_ECDH_compute_key_fips
+#define ECDSA_do_sign GRPC_SHADOW_ECDSA_do_sign
+#define ECDSA_do_verify GRPC_SHADOW_ECDSA_do_verify
+#define ECDSA_SIG_free GRPC_SHADOW_ECDSA_SIG_free
+#define ECDSA_SIG_from_bytes GRPC_SHADOW_ECDSA_SIG_from_bytes
+#define ECDSA_SIG_get0 GRPC_SHADOW_ECDSA_SIG_get0
+#define ECDSA_SIG_marshal GRPC_SHADOW_ECDSA_SIG_marshal
+#define ECDSA_SIG_max_len GRPC_SHADOW_ECDSA_SIG_max_len
+#define ECDSA_sign GRPC_SHADOW_ECDSA_sign
+#define ECDSA_SIG_new GRPC_SHADOW_ECDSA_SIG_new
+#define ECDSA_SIG_parse GRPC_SHADOW_ECDSA_SIG_parse
+#define ECDSA_SIG_set0 GRPC_SHADOW_ECDSA_SIG_set0
+#define ECDSA_SIG_to_bytes GRPC_SHADOW_ECDSA_SIG_to_bytes
+#define ECDSA_size GRPC_SHADOW_ECDSA_size
+#define ECDSA_verify GRPC_SHADOW_ECDSA_verify
+#define ec_felem_add GRPC_SHADOW_ec_felem_add
+#define ec_felem_equal GRPC_SHADOW_ec_felem_equal
+#define ec_felem_neg GRPC_SHADOW_ec_felem_neg
+#define ec_felem_non_zero_mask GRPC_SHADOW_ec_felem_non_zero_mask
+#define ec_felem_select GRPC_SHADOW_ec_felem_select
+#define ec_felem_sub GRPC_SHADOW_ec_felem_sub
+#define ec_felem_to_bignum GRPC_SHADOW_ec_felem_to_bignum
+#define EC_get_builtin_curves GRPC_SHADOW_EC_get_builtin_curves
+#define ec_get_x_coordinate_as_scalar GRPC_SHADOW_ec_get_x_coordinate_as_scalar
+#define ec_GFp_mont_add GRPC_SHADOW_ec_GFp_mont_add
+#define ec_GFp_mont_bignum_to_felem GRPC_SHADOW_ec_GFp_mont_bignum_to_felem
+#define ec_GFp_mont_dbl GRPC_SHADOW_ec_GFp_mont_dbl
+#define ec_GFp_mont_felem_mul GRPC_SHADOW_ec_GFp_mont_felem_mul
+#define ec_GFp_mont_felem_sqr GRPC_SHADOW_ec_GFp_mont_felem_sqr
+#define ec_GFp_mont_felem_to_bignum GRPC_SHADOW_ec_GFp_mont_felem_to_bignum
+#define ec_GFp_mont_group_finish GRPC_SHADOW_ec_GFp_mont_group_finish
+#define ec_GFp_mont_group_init GRPC_SHADOW_ec_GFp_mont_group_init
+#define ec_GFp_mont_group_set_curve GRPC_SHADOW_ec_GFp_mont_group_set_curve
+#define EC_GFp_mont_method GRPC_SHADOW_EC_GFp_mont_method
+#define ec_GFp_mont_mul GRPC_SHADOW_ec_GFp_mont_mul
+#define ec_GFp_mont_mul_base GRPC_SHADOW_ec_GFp_mont_mul_base
+#define ec_GFp_mont_mul_public GRPC_SHADOW_ec_GFp_mont_mul_public
+#define EC_GFp_nistp224_method GRPC_SHADOW_EC_GFp_nistp224_method
+#define EC_GFp_nistp256_method GRPC_SHADOW_EC_GFp_nistp256_method
+#define ec_GFp_nistp_recode_scalar_bits GRPC_SHADOW_ec_GFp_nistp_recode_scalar_bits
+#define EC_GFp_nistz256_method GRPC_SHADOW_EC_GFp_nistz256_method
+#define ec_GFp_simple_cmp GRPC_SHADOW_ec_GFp_simple_cmp
+#define ec_GFp_simple_cmp_x_coordinate GRPC_SHADOW_ec_GFp_simple_cmp_x_coordinate
+#define ec_GFp_simple_group_finish GRPC_SHADOW_ec_GFp_simple_group_finish
+#define ec_GFp_simple_group_get_curve GRPC_SHADOW_ec_GFp_simple_group_get_curve
+#define ec_GFp_simple_group_init GRPC_SHADOW_ec_GFp_simple_group_init
+#define ec_GFp_simple_group_set_curve GRPC_SHADOW_ec_GFp_simple_group_set_curve
+#define ec_GFp_simple_invert GRPC_SHADOW_ec_GFp_simple_invert
+#define ec_GFp_simple_is_at_infinity GRPC_SHADOW_ec_GFp_simple_is_at_infinity
+#define ec_GFp_simple_is_on_curve GRPC_SHADOW_ec_GFp_simple_is_on_curve
+#define ec_GFp_simple_mont_inv_mod_ord_vartime GRPC_SHADOW_ec_GFp_simple_mont_inv_mod_ord_vartime
+#define ec_GFp_simple_point_copy GRPC_SHADOW_ec_GFp_simple_point_copy
+#define ec_GFp_simple_point_init GRPC_SHADOW_ec_GFp_simple_point_init
+#define ec_GFp_simple_point_set_affine_coordinates GRPC_SHADOW_ec_GFp_simple_point_set_affine_coordinates
+#define ec_GFp_simple_point_set_to_infinity GRPC_SHADOW_ec_GFp_simple_point_set_to_infinity
+#define EC_GROUP_cmp GRPC_SHADOW_EC_GROUP_cmp
+#define EC_GROUP_dup GRPC_SHADOW_EC_GROUP_dup
+#define EC_GROUP_free GRPC_SHADOW_EC_GROUP_free
+#define EC_GROUP_get0_generator GRPC_SHADOW_EC_GROUP_get0_generator
+#define EC_GROUP_get0_order GRPC_SHADOW_EC_GROUP_get0_order
+#define EC_GROUP_get_cofactor GRPC_SHADOW_EC_GROUP_get_cofactor
+#define EC_GROUP_get_curve_GFp GRPC_SHADOW_EC_GROUP_get_curve_GFp
+#define EC_GROUP_get_curve_name GRPC_SHADOW_EC_GROUP_get_curve_name
+#define EC_GROUP_get_degree GRPC_SHADOW_EC_GROUP_get_degree
+#define EC_GROUP_get_order GRPC_SHADOW_EC_GROUP_get_order
+#define EC_GROUP_method_of GRPC_SHADOW_EC_GROUP_method_of
+#define ec_group_new GRPC_SHADOW_ec_group_new
+#define EC_GROUP_new_by_curve_name GRPC_SHADOW_EC_GROUP_new_by_curve_name
+#define EC_GROUP_new_curve_GFp GRPC_SHADOW_EC_GROUP_new_curve_GFp
+#define EC_GROUP_order_bits GRPC_SHADOW_EC_GROUP_order_bits
+#define EC_GROUP_set_asn1_flag GRPC_SHADOW_EC_GROUP_set_asn1_flag
+#define EC_GROUP_set_generator GRPC_SHADOW_EC_GROUP_set_generator
+#define EC_GROUP_set_point_conversion_form GRPC_SHADOW_EC_GROUP_set_point_conversion_form
+#define EC_KEY_check_fips GRPC_SHADOW_EC_KEY_check_fips
+#define EC_KEY_check_key GRPC_SHADOW_EC_KEY_check_key
+#define EC_KEY_derive_from_secret GRPC_SHADOW_EC_KEY_derive_from_secret
+#define EC_KEY_dup GRPC_SHADOW_EC_KEY_dup
+#define EC_KEY_free GRPC_SHADOW_EC_KEY_free
+#define EC_KEY_generate_key GRPC_SHADOW_EC_KEY_generate_key
+#define EC_KEY_generate_key_fips GRPC_SHADOW_EC_KEY_generate_key_fips
+#define EC_KEY_get0_group GRPC_SHADOW_EC_KEY_get0_group
+#define EC_KEY_get0_private_key GRPC_SHADOW_EC_KEY_get0_private_key
+#define EC_KEY_get0_public_key GRPC_SHADOW_EC_KEY_get0_public_key
+#define EC_KEY_get_conv_form GRPC_SHADOW_EC_KEY_get_conv_form
+#define EC_KEY_get_enc_flags GRPC_SHADOW_EC_KEY_get_enc_flags
+#define EC_KEY_get_ex_data GRPC_SHADOW_EC_KEY_get_ex_data
+#define EC_KEY_get_ex_new_index GRPC_SHADOW_EC_KEY_get_ex_new_index
+#define EC_KEY_is_opaque GRPC_SHADOW_EC_KEY_is_opaque
+#define EC_KEY_key2buf GRPC_SHADOW_EC_KEY_key2buf
+#define EC_KEY_marshal_curve_name GRPC_SHADOW_EC_KEY_marshal_curve_name
+#define EC_KEY_marshal_private_key GRPC_SHADOW_EC_KEY_marshal_private_key
+#define EC_KEY_new GRPC_SHADOW_EC_KEY_new
+#define EC_KEY_new_by_curve_name GRPC_SHADOW_EC_KEY_new_by_curve_name
+#define EC_KEY_new_method GRPC_SHADOW_EC_KEY_new_method
+#define EC_KEY_parse_curve_name GRPC_SHADOW_EC_KEY_parse_curve_name
+#define EC_KEY_parse_parameters GRPC_SHADOW_EC_KEY_parse_parameters
+#define EC_KEY_parse_private_key GRPC_SHADOW_EC_KEY_parse_private_key
+#define EC_KEY_set_asn1_flag GRPC_SHADOW_EC_KEY_set_asn1_flag
+#define EC_KEY_set_conv_form GRPC_SHADOW_EC_KEY_set_conv_form
+#define EC_KEY_set_enc_flags GRPC_SHADOW_EC_KEY_set_enc_flags
+#define EC_KEY_set_ex_data GRPC_SHADOW_EC_KEY_set_ex_data
+#define EC_KEY_set_group GRPC_SHADOW_EC_KEY_set_group
+#define EC_KEY_set_private_key GRPC_SHADOW_EC_KEY_set_private_key
+#define EC_KEY_set_public_key GRPC_SHADOW_EC_KEY_set_public_key
+#define EC_KEY_set_public_key_affine_coordinates GRPC_SHADOW_EC_KEY_set_public_key_affine_coordinates
+#define EC_KEY_up_ref GRPC_SHADOW_EC_KEY_up_ref
+#define EC_METHOD_get_field_type GRPC_SHADOW_EC_METHOD_get_field_type
+#define ec_pkey_meth GRPC_SHADOW_ec_pkey_meth
+#define ecp_nistz256_avx2_select_w7 GRPC_SHADOW_ecp_nistz256_avx2_select_w7
+#define ecp_nistz256_mul_mont GRPC_SHADOW_ecp_nistz256_mul_mont
+#define ecp_nistz256_neg GRPC_SHADOW_ecp_nistz256_neg
+#define ecp_nistz256_ord_mul_mont GRPC_SHADOW_ecp_nistz256_ord_mul_mont
+#define ecp_nistz256_ord_sqr_mont GRPC_SHADOW_ecp_nistz256_ord_sqr_mont
+#define ecp_nistz256_point_add GRPC_SHADOW_ecp_nistz256_point_add
+#define ecp_nistz256_point_add_affine GRPC_SHADOW_ecp_nistz256_point_add_affine
+#define ecp_nistz256_point_double GRPC_SHADOW_ecp_nistz256_point_double
+#define ecp_nistz256_select_w5 GRPC_SHADOW_ecp_nistz256_select_w5
+#define ecp_nistz256_select_w7 GRPC_SHADOW_ecp_nistz256_select_w7
+#define ecp_nistz256_sqr_mont GRPC_SHADOW_ecp_nistz256_sqr_mont
+#define EC_POINT_add GRPC_SHADOW_EC_POINT_add
+#define EC_POINT_clear_free GRPC_SHADOW_EC_POINT_clear_free
+#define EC_POINT_cmp GRPC_SHADOW_EC_POINT_cmp
+#define EC_POINT_copy GRPC_SHADOW_EC_POINT_copy
+#define EC_POINT_dbl GRPC_SHADOW_EC_POINT_dbl
+#define EC_POINT_dup GRPC_SHADOW_EC_POINT_dup
+#define EC_POINT_free GRPC_SHADOW_EC_POINT_free
+#define ec_point_get_affine_coordinate_bytes GRPC_SHADOW_ec_point_get_affine_coordinate_bytes
+#define EC_POINT_get_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_get_affine_coordinates_GFp
+#define EC_POINT_invert GRPC_SHADOW_EC_POINT_invert
+#define EC_POINT_is_at_infinity GRPC_SHADOW_EC_POINT_is_at_infinity
+#define EC_POINT_is_on_curve GRPC_SHADOW_EC_POINT_is_on_curve
+#define EC_POINT_mul GRPC_SHADOW_EC_POINT_mul
+#define ec_point_mul_scalar GRPC_SHADOW_ec_point_mul_scalar
+#define ec_point_mul_scalar_base GRPC_SHADOW_ec_point_mul_scalar_base
+#define ec_point_mul_scalar_public GRPC_SHADOW_ec_point_mul_scalar_public
+#define EC_POINT_new GRPC_SHADOW_EC_POINT_new
+#define EC_POINT_oct2point GRPC_SHADOW_EC_POINT_oct2point
+#define EC_POINT_point2cbb GRPC_SHADOW_EC_POINT_point2cbb
+#define EC_POINT_point2oct GRPC_SHADOW_EC_POINT_point2oct
+#define EC_POINT_set_affine_coordinates_GFp GRPC_SHADOW_EC_POINT_set_affine_coordinates_GFp
+#define EC_POINT_set_compressed_coordinates_GFp GRPC_SHADOW_EC_POINT_set_compressed_coordinates_GFp
+#define EC_POINT_set_to_infinity GRPC_SHADOW_EC_POINT_set_to_infinity
+#define ec_random_nonzero_scalar GRPC_SHADOW_ec_random_nonzero_scalar
+#define ec_scalar_add GRPC_SHADOW_ec_scalar_add
+#define ec_scalar_equal_vartime GRPC_SHADOW_ec_scalar_equal_vartime
+#define ec_scalar_from_montgomery GRPC_SHADOW_ec_scalar_from_montgomery
+#define ec_scalar_inv_montgomery GRPC_SHADOW_ec_scalar_inv_montgomery
+#define ec_scalar_inv_montgomery_vartime GRPC_SHADOW_ec_scalar_inv_montgomery_vartime
+#define ec_scalar_is_zero GRPC_SHADOW_ec_scalar_is_zero
+#define ec_scalar_mul_montgomery GRPC_SHADOW_ec_scalar_mul_montgomery
+#define ec_scalar_to_montgomery GRPC_SHADOW_ec_scalar_to_montgomery
+#define ec_simple_scalar_inv_montgomery GRPC_SHADOW_ec_simple_scalar_inv_montgomery
+#define ed25519_asn1_meth GRPC_SHADOW_ed25519_asn1_meth
+#define ED25519_keypair GRPC_SHADOW_ED25519_keypair
+#define ED25519_keypair_from_seed GRPC_SHADOW_ED25519_keypair_from_seed
+#define ed25519_pkey_meth GRPC_SHADOW_ed25519_pkey_meth
+#define ED25519_sign GRPC_SHADOW_ED25519_sign
+#define ED25519_verify GRPC_SHADOW_ED25519_verify
+#define EDIPARTYNAME_free GRPC_SHADOW_EDIPARTYNAME_free
+#define EDIPARTYNAME_it GRPC_SHADOW_EDIPARTYNAME_it
+#define EDIPARTYNAME_new GRPC_SHADOW_EDIPARTYNAME_new
+#define ENGINE_free GRPC_SHADOW_ENGINE_free
+#define ENGINE_get_ECDSA_method GRPC_SHADOW_ENGINE_get_ECDSA_method
+#define ENGINE_get_RSA_method GRPC_SHADOW_ENGINE_get_RSA_method
+#define ENGINE_load_builtin_engines GRPC_SHADOW_ENGINE_load_builtin_engines
+#define ENGINE_new GRPC_SHADOW_ENGINE_new
+#define ENGINE_register_all_complete GRPC_SHADOW_ENGINE_register_all_complete
+#define ENGINE_set_ECDSA_method GRPC_SHADOW_ENGINE_set_ECDSA_method
+#define ENGINE_set_RSA_method GRPC_SHADOW_ENGINE_set_RSA_method
+#define ERR_add_error_data GRPC_SHADOW_ERR_add_error_data
+#define ERR_add_error_dataf GRPC_SHADOW_ERR_add_error_dataf
+#define ERR_clear_error GRPC_SHADOW_ERR_clear_error
+#define ERR_clear_system_error GRPC_SHADOW_ERR_clear_system_error
+#define ERR_error_string GRPC_SHADOW_ERR_error_string
+#define ERR_error_string_n GRPC_SHADOW_ERR_error_string_n
+#define ERR_free_strings GRPC_SHADOW_ERR_free_strings
+#define ERR_func_error_string GRPC_SHADOW_ERR_func_error_string
+#define ERR_get_error GRPC_SHADOW_ERR_get_error
+#define ERR_get_error_line GRPC_SHADOW_ERR_get_error_line
+#define ERR_get_error_line_data GRPC_SHADOW_ERR_get_error_line_data
+#define ERR_get_next_error_library GRPC_SHADOW_ERR_get_next_error_library
+#define ERR_lib_error_string GRPC_SHADOW_ERR_lib_error_string
+#define ERR_load_BIO_strings GRPC_SHADOW_ERR_load_BIO_strings
+#define ERR_load_crypto_strings GRPC_SHADOW_ERR_load_crypto_strings
+#define ERR_load_ERR_strings GRPC_SHADOW_ERR_load_ERR_strings
+#define ERR_load_RAND_strings GRPC_SHADOW_ERR_load_RAND_strings
+#define ERR_load_SSL_strings GRPC_SHADOW_ERR_load_SSL_strings
+#define ERR_peek_error GRPC_SHADOW_ERR_peek_error
+#define ERR_peek_error_line GRPC_SHADOW_ERR_peek_error_line
+#define ERR_peek_error_line_data GRPC_SHADOW_ERR_peek_error_line_data
+#define ERR_peek_last_error GRPC_SHADOW_ERR_peek_last_error
+#define ERR_peek_last_error_line GRPC_SHADOW_ERR_peek_last_error_line
+#define ERR_peek_last_error_line_data GRPC_SHADOW_ERR_peek_last_error_line_data
+#define ERR_pop_to_mark GRPC_SHADOW_ERR_pop_to_mark
+#define ERR_print_errors GRPC_SHADOW_ERR_print_errors
+#define ERR_print_errors_cb GRPC_SHADOW_ERR_print_errors_cb
+#define ERR_print_errors_fp GRPC_SHADOW_ERR_print_errors_fp
+#define ERR_put_error GRPC_SHADOW_ERR_put_error
+#define ERR_reason_error_string GRPC_SHADOW_ERR_reason_error_string
+#define ERR_remove_state GRPC_SHADOW_ERR_remove_state
+#define ERR_remove_thread_state GRPC_SHADOW_ERR_remove_thread_state
+#define ERR_restore_state GRPC_SHADOW_ERR_restore_state
+#define ERR_save_state GRPC_SHADOW_ERR_save_state
+#define ERR_SAVE_STATE_free GRPC_SHADOW_ERR_SAVE_STATE_free
+#define ERR_set_mark GRPC_SHADOW_ERR_set_mark
+#define EVP_add_cipher_alias GRPC_SHADOW_EVP_add_cipher_alias
+#define EVP_add_digest GRPC_SHADOW_EVP_add_digest
+#define EVP_aead_aes_128_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls
+#define EVP_aead_aes_128_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_128_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_128_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_128_cbc_sha256_tls
+#define EVP_aead_aes_128_ccm_bluetooth GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth
+#define EVP_aead_aes_128_ccm_bluetooth_8 GRPC_SHADOW_EVP_aead_aes_128_ccm_bluetooth_8
+#define EVP_aead_aes_128_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_128_ctr_hmac_sha256
+#define EVP_aead_aes_128_gcm GRPC_SHADOW_EVP_aead_aes_128_gcm
+#define EVP_aead_aes_128_gcm_siv GRPC_SHADOW_EVP_aead_aes_128_gcm_siv
+#define EVP_aead_aes_128_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls12
+#define EVP_aead_aes_128_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_128_gcm_tls13
+#define EVP_aead_aes_192_gcm GRPC_SHADOW_EVP_aead_aes_192_gcm
+#define EVP_aead_aes_256_cbc_sha1_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls
+#define EVP_aead_aes_256_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_aes_256_cbc_sha1_tls_implicit_iv
+#define EVP_aead_aes_256_cbc_sha256_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha256_tls
+#define EVP_aead_aes_256_cbc_sha384_tls GRPC_SHADOW_EVP_aead_aes_256_cbc_sha384_tls
+#define EVP_aead_aes_256_ctr_hmac_sha256 GRPC_SHADOW_EVP_aead_aes_256_ctr_hmac_sha256
+#define EVP_aead_aes_256_gcm GRPC_SHADOW_EVP_aead_aes_256_gcm
+#define EVP_aead_aes_256_gcm_siv GRPC_SHADOW_EVP_aead_aes_256_gcm_siv
+#define EVP_aead_aes_256_gcm_tls12 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls12
+#define EVP_aead_aes_256_gcm_tls13 GRPC_SHADOW_EVP_aead_aes_256_gcm_tls13
+#define EVP_aead_chacha20_poly1305 GRPC_SHADOW_EVP_aead_chacha20_poly1305
+#define EVP_AEAD_CTX_aead GRPC_SHADOW_EVP_AEAD_CTX_aead
+#define EVP_AEAD_CTX_cleanup GRPC_SHADOW_EVP_AEAD_CTX_cleanup
+#define EVP_AEAD_CTX_free GRPC_SHADOW_EVP_AEAD_CTX_free
+#define EVP_AEAD_CTX_get_iv GRPC_SHADOW_EVP_AEAD_CTX_get_iv
+#define EVP_AEAD_CTX_init GRPC_SHADOW_EVP_AEAD_CTX_init
+#define EVP_AEAD_CTX_init_with_direction GRPC_SHADOW_EVP_AEAD_CTX_init_with_direction
+#define EVP_AEAD_CTX_new GRPC_SHADOW_EVP_AEAD_CTX_new
+#define EVP_AEAD_CTX_open GRPC_SHADOW_EVP_AEAD_CTX_open
+#define EVP_AEAD_CTX_open_gather GRPC_SHADOW_EVP_AEAD_CTX_open_gather
+#define EVP_AEAD_CTX_seal GRPC_SHADOW_EVP_AEAD_CTX_seal
+#define EVP_AEAD_CTX_seal_scatter GRPC_SHADOW_EVP_AEAD_CTX_seal_scatter
+#define EVP_AEAD_CTX_tag_len GRPC_SHADOW_EVP_AEAD_CTX_tag_len
+#define EVP_AEAD_CTX_zero GRPC_SHADOW_EVP_AEAD_CTX_zero
+#define EVP_aead_des_ede3_cbc_sha1_tls GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls
+#define EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv GRPC_SHADOW_EVP_aead_des_ede3_cbc_sha1_tls_implicit_iv
+#define EVP_AEAD_key_length GRPC_SHADOW_EVP_AEAD_key_length
+#define EVP_AEAD_max_overhead GRPC_SHADOW_EVP_AEAD_max_overhead
+#define EVP_AEAD_max_tag_len GRPC_SHADOW_EVP_AEAD_max_tag_len
+#define EVP_AEAD_nonce_length GRPC_SHADOW_EVP_AEAD_nonce_length
+#define EVP_aead_null_sha1_tls GRPC_SHADOW_EVP_aead_null_sha1_tls
+#define EVP_aead_xchacha20_poly1305 GRPC_SHADOW_EVP_aead_xchacha20_poly1305
+#define EVP_aes_128_cbc GRPC_SHADOW_EVP_aes_128_cbc
+#define EVP_aes_128_ctr GRPC_SHADOW_EVP_aes_128_ctr
+#define EVP_aes_128_ecb GRPC_SHADOW_EVP_aes_128_ecb
+#define EVP_aes_128_gcm GRPC_SHADOW_EVP_aes_128_gcm
+#define EVP_aes_128_ofb GRPC_SHADOW_EVP_aes_128_ofb
+#define EVP_aes_192_cbc GRPC_SHADOW_EVP_aes_192_cbc
+#define EVP_aes_192_ctr GRPC_SHADOW_EVP_aes_192_ctr
+#define EVP_aes_192_ecb GRPC_SHADOW_EVP_aes_192_ecb
+#define EVP_aes_192_gcm GRPC_SHADOW_EVP_aes_192_gcm
+#define EVP_aes_192_ofb GRPC_SHADOW_EVP_aes_192_ofb
+#define EVP_aes_256_cbc GRPC_SHADOW_EVP_aes_256_cbc
+#define EVP_aes_256_ctr GRPC_SHADOW_EVP_aes_256_ctr
+#define EVP_aes_256_ecb GRPC_SHADOW_EVP_aes_256_ecb
+#define EVP_aes_256_gcm GRPC_SHADOW_EVP_aes_256_gcm
+#define EVP_aes_256_ofb GRPC_SHADOW_EVP_aes_256_ofb
+#define EVP_BytesToKey GRPC_SHADOW_EVP_BytesToKey
+#define EVP_Cipher GRPC_SHADOW_EVP_Cipher
+#define EVP_CIPHER_block_size GRPC_SHADOW_EVP_CIPHER_block_size
+#define EVP_CIPHER_CTX_block_size GRPC_SHADOW_EVP_CIPHER_CTX_block_size
+#define EVP_CIPHER_CTX_cipher GRPC_SHADOW_EVP_CIPHER_CTX_cipher
+#define EVP_CIPHER_CTX_cleanup GRPC_SHADOW_EVP_CIPHER_CTX_cleanup
+#define EVP_CIPHER_CTX_copy GRPC_SHADOW_EVP_CIPHER_CTX_copy
+#define EVP_CIPHER_CTX_ctrl GRPC_SHADOW_EVP_CIPHER_CTX_ctrl
+#define EVP_CIPHER_CTX_encrypting GRPC_SHADOW_EVP_CIPHER_CTX_encrypting
+#define EVP_CIPHER_CTX_flags GRPC_SHADOW_EVP_CIPHER_CTX_flags
+#define EVP_CIPHER_CTX_free GRPC_SHADOW_EVP_CIPHER_CTX_free
+#define EVP_CIPHER_CTX_get_app_data GRPC_SHADOW_EVP_CIPHER_CTX_get_app_data
+#define EVP_CIPHER_CTX_init GRPC_SHADOW_EVP_CIPHER_CTX_init
+#define EVP_CIPHER_CTX_iv_length GRPC_SHADOW_EVP_CIPHER_CTX_iv_length
+#define EVP_CIPHER_CTX_key_length GRPC_SHADOW_EVP_CIPHER_CTX_key_length
+#define EVP_CIPHER_CTX_mode GRPC_SHADOW_EVP_CIPHER_CTX_mode
+#define EVP_CIPHER_CTX_new GRPC_SHADOW_EVP_CIPHER_CTX_new
+#define EVP_CIPHER_CTX_nid GRPC_SHADOW_EVP_CIPHER_CTX_nid
+#define EVP_CIPHER_CTX_reset GRPC_SHADOW_EVP_CIPHER_CTX_reset
+#define EVP_CIPHER_CTX_set_app_data GRPC_SHADOW_EVP_CIPHER_CTX_set_app_data
+#define EVP_CIPHER_CTX_set_flags GRPC_SHADOW_EVP_CIPHER_CTX_set_flags
+#define EVP_CIPHER_CTX_set_key_length GRPC_SHADOW_EVP_CIPHER_CTX_set_key_length
+#define EVP_CIPHER_CTX_set_padding GRPC_SHADOW_EVP_CIPHER_CTX_set_padding
+#define EVP_CipherFinal_ex GRPC_SHADOW_EVP_CipherFinal_ex
+#define EVP_CIPHER_flags GRPC_SHADOW_EVP_CIPHER_flags
+#define EVP_CipherInit GRPC_SHADOW_EVP_CipherInit
+#define EVP_CipherInit_ex GRPC_SHADOW_EVP_CipherInit_ex
+#define EVP_CIPHER_iv_length GRPC_SHADOW_EVP_CIPHER_iv_length
+#define EVP_CIPHER_key_length GRPC_SHADOW_EVP_CIPHER_key_length
+#define EVP_CIPHER_mode GRPC_SHADOW_EVP_CIPHER_mode
+#define EVP_CIPHER_nid GRPC_SHADOW_EVP_CIPHER_nid
+#define EVP_CipherUpdate GRPC_SHADOW_EVP_CipherUpdate
+#define EVP_cleanup GRPC_SHADOW_EVP_cleanup
+#define EVP_DecodeBase64 GRPC_SHADOW_EVP_DecodeBase64
+#define EVP_DecodeBlock GRPC_SHADOW_EVP_DecodeBlock
+#define EVP_DecodedLength GRPC_SHADOW_EVP_DecodedLength
+#define EVP_DecodeFinal GRPC_SHADOW_EVP_DecodeFinal
+#define EVP_DecodeInit GRPC_SHADOW_EVP_DecodeInit
+#define EVP_DecodeUpdate GRPC_SHADOW_EVP_DecodeUpdate
+#define EVP_DecryptFinal_ex GRPC_SHADOW_EVP_DecryptFinal_ex
+#define EVP_DecryptInit GRPC_SHADOW_EVP_DecryptInit
+#define EVP_DecryptInit_ex GRPC_SHADOW_EVP_DecryptInit_ex
+#define EVP_DecryptUpdate GRPC_SHADOW_EVP_DecryptUpdate
+#define EVP_des_cbc GRPC_SHADOW_EVP_des_cbc
+#define EVP_des_ecb GRPC_SHADOW_EVP_des_ecb
+#define EVP_des_ede GRPC_SHADOW_EVP_des_ede
+#define EVP_des_ede3 GRPC_SHADOW_EVP_des_ede3
+#define EVP_des_ede3_cbc GRPC_SHADOW_EVP_des_ede3_cbc
+#define EVP_des_ede3_ecb GRPC_SHADOW_EVP_des_ede3_ecb
+#define EVP_des_ede_cbc GRPC_SHADOW_EVP_des_ede_cbc
+#define EVP_Digest GRPC_SHADOW_EVP_Digest
+#define EVP_DigestFinal GRPC_SHADOW_EVP_DigestFinal
+#define EVP_DigestFinal_ex GRPC_SHADOW_EVP_DigestFinal_ex
+#define EVP_DigestFinalXOF GRPC_SHADOW_EVP_DigestFinalXOF
+#define EVP_DigestInit GRPC_SHADOW_EVP_DigestInit
+#define EVP_DigestInit_ex GRPC_SHADOW_EVP_DigestInit_ex
+#define EVP_DigestSign GRPC_SHADOW_EVP_DigestSign
+#define EVP_DigestSignFinal GRPC_SHADOW_EVP_DigestSignFinal
+#define EVP_DigestSignInit GRPC_SHADOW_EVP_DigestSignInit
+#define EVP_DigestSignUpdate GRPC_SHADOW_EVP_DigestSignUpdate
+#define EVP_DigestUpdate GRPC_SHADOW_EVP_DigestUpdate
+#define EVP_DigestVerify GRPC_SHADOW_EVP_DigestVerify
+#define EVP_DigestVerifyFinal GRPC_SHADOW_EVP_DigestVerifyFinal
+#define EVP_DigestVerifyInit GRPC_SHADOW_EVP_DigestVerifyInit
+#define EVP_DigestVerifyUpdate GRPC_SHADOW_EVP_DigestVerifyUpdate
+#define EVP_enc_null GRPC_SHADOW_EVP_enc_null
+#define EVP_EncodeBlock GRPC_SHADOW_EVP_EncodeBlock
+#define EVP_EncodedLength GRPC_SHADOW_EVP_EncodedLength
+#define EVP_EncodeFinal GRPC_SHADOW_EVP_EncodeFinal
+#define EVP_EncodeInit GRPC_SHADOW_EVP_EncodeInit
+#define EVP_EncodeUpdate GRPC_SHADOW_EVP_EncodeUpdate
+#define EVP_EncryptFinal_ex GRPC_SHADOW_EVP_EncryptFinal_ex
+#define EVP_EncryptInit GRPC_SHADOW_EVP_EncryptInit
+#define EVP_EncryptInit_ex GRPC_SHADOW_EVP_EncryptInit_ex
+#define EVP_EncryptUpdate GRPC_SHADOW_EVP_EncryptUpdate
+#define EVP_get_cipherbyname GRPC_SHADOW_EVP_get_cipherbyname
+#define EVP_get_cipherbynid GRPC_SHADOW_EVP_get_cipherbynid
+#define EVP_get_digestbyname GRPC_SHADOW_EVP_get_digestbyname
+#define EVP_get_digestbynid GRPC_SHADOW_EVP_get_digestbynid
+#define EVP_get_digestbyobj GRPC_SHADOW_EVP_get_digestbyobj
+#define EVP_has_aes_hardware GRPC_SHADOW_EVP_has_aes_hardware
+#define EVP_marshal_digest_algorithm GRPC_SHADOW_EVP_marshal_digest_algorithm
+#define EVP_marshal_private_key GRPC_SHADOW_EVP_marshal_private_key
+#define EVP_marshal_public_key GRPC_SHADOW_EVP_marshal_public_key
+#define EVP_md4 GRPC_SHADOW_EVP_md4
+#define EVP_md5 GRPC_SHADOW_EVP_md5
+#define EVP_md5_sha1 GRPC_SHADOW_EVP_md5_sha1
+#define EVP_MD_block_size GRPC_SHADOW_EVP_MD_block_size
+#define EVP_MD_CTX_block_size GRPC_SHADOW_EVP_MD_CTX_block_size
+#define EVP_MD_CTX_cleanup GRPC_SHADOW_EVP_MD_CTX_cleanup
+#define EVP_MD_CTX_copy GRPC_SHADOW_EVP_MD_CTX_copy
+#define EVP_MD_CTX_copy_ex GRPC_SHADOW_EVP_MD_CTX_copy_ex
+#define EVP_MD_CTX_create GRPC_SHADOW_EVP_MD_CTX_create
+#define EVP_MD_CTX_destroy GRPC_SHADOW_EVP_MD_CTX_destroy
+#define EVP_MD_CTX_free GRPC_SHADOW_EVP_MD_CTX_free
+#define EVP_MD_CTX_init GRPC_SHADOW_EVP_MD_CTX_init
+#define EVP_MD_CTX_md GRPC_SHADOW_EVP_MD_CTX_md
+#define EVP_MD_CTX_new GRPC_SHADOW_EVP_MD_CTX_new
+#define EVP_MD_CTX_reset GRPC_SHADOW_EVP_MD_CTX_reset
+#define EVP_MD_CTX_size GRPC_SHADOW_EVP_MD_CTX_size
+#define EVP_MD_CTX_type GRPC_SHADOW_EVP_MD_CTX_type
+#define EVP_MD_flags GRPC_SHADOW_EVP_MD_flags
+#define EVP_MD_meth_get_flags GRPC_SHADOW_EVP_MD_meth_get_flags
+#define EVP_MD_size GRPC_SHADOW_EVP_MD_size
+#define EVP_MD_type GRPC_SHADOW_EVP_MD_type
+#define EVP_parse_digest_algorithm GRPC_SHADOW_EVP_parse_digest_algorithm
+#define EVP_parse_private_key GRPC_SHADOW_EVP_parse_private_key
+#define EVP_parse_public_key GRPC_SHADOW_EVP_parse_public_key
+#define EVP_PBE_scrypt GRPC_SHADOW_EVP_PBE_scrypt
+#define EVP_PKCS82PKEY GRPC_SHADOW_EVP_PKCS82PKEY
+#define EVP_PKEY2PKCS8 GRPC_SHADOW_EVP_PKEY2PKCS8
+#define EVP_PKEY_assign GRPC_SHADOW_EVP_PKEY_assign
+#define EVP_PKEY_assign_DSA GRPC_SHADOW_EVP_PKEY_assign_DSA
+#define EVP_PKEY_assign_EC_KEY GRPC_SHADOW_EVP_PKEY_assign_EC_KEY
+#define EVP_PKEY_assign_RSA GRPC_SHADOW_EVP_PKEY_assign_RSA
+#define EVP_PKEY_base_id GRPC_SHADOW_EVP_PKEY_base_id
+#define EVP_PKEY_bits GRPC_SHADOW_EVP_PKEY_bits
+#define EVP_PKEY_cmp GRPC_SHADOW_EVP_PKEY_cmp
+#define EVP_PKEY_cmp_parameters GRPC_SHADOW_EVP_PKEY_cmp_parameters
+#define EVP_PKEY_copy_parameters GRPC_SHADOW_EVP_PKEY_copy_parameters
+#define EVP_PKEY_CTX_ctrl GRPC_SHADOW_EVP_PKEY_CTX_ctrl
+#define EVP_PKEY_CTX_dup GRPC_SHADOW_EVP_PKEY_CTX_dup
+#define EVP_PKEY_CTX_free GRPC_SHADOW_EVP_PKEY_CTX_free
+#define EVP_PKEY_CTX_get0_pkey GRPC_SHADOW_EVP_PKEY_CTX_get0_pkey
+#define EVP_PKEY_CTX_get0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_get0_rsa_oaep_label
+#define EVP_PKEY_CTX_get_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_mgf1_md
+#define EVP_PKEY_CTX_get_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_oaep_md
+#define EVP_PKEY_CTX_get_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_padding
+#define EVP_PKEY_CTX_get_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_get_rsa_pss_saltlen
+#define EVP_PKEY_CTX_get_signature_md GRPC_SHADOW_EVP_PKEY_CTX_get_signature_md
+#define EVP_PKEY_CTX_new GRPC_SHADOW_EVP_PKEY_CTX_new
+#define EVP_PKEY_CTX_new_id GRPC_SHADOW_EVP_PKEY_CTX_new_id
+#define EVP_PKEY_CTX_set0_rsa_oaep_label GRPC_SHADOW_EVP_PKEY_CTX_set0_rsa_oaep_label
+#define EVP_PKEY_CTX_set_ec_param_enc GRPC_SHADOW_EVP_PKEY_CTX_set_ec_param_enc
+#define EVP_PKEY_CTX_set_ec_paramgen_curve_nid GRPC_SHADOW_EVP_PKEY_CTX_set_ec_paramgen_curve_nid
+#define EVP_PKEY_CTX_set_rsa_keygen_bits GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_bits
+#define EVP_PKEY_CTX_set_rsa_keygen_pubexp GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_keygen_pubexp
+#define EVP_PKEY_CTX_set_rsa_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_oaep_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_oaep_md
+#define EVP_PKEY_CTX_set_rsa_padding GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_padding
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md
+#define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen
+#define EVP_PKEY_CTX_set_rsa_pss_saltlen GRPC_SHADOW_EVP_PKEY_CTX_set_rsa_pss_saltlen
+#define EVP_PKEY_CTX_set_signature_md GRPC_SHADOW_EVP_PKEY_CTX_set_signature_md
+#define EVP_PKEY_decrypt GRPC_SHADOW_EVP_PKEY_decrypt
+#define EVP_PKEY_decrypt_init GRPC_SHADOW_EVP_PKEY_decrypt_init
+#define EVP_PKEY_derive GRPC_SHADOW_EVP_PKEY_derive
+#define EVP_PKEY_derive_init GRPC_SHADOW_EVP_PKEY_derive_init
+#define EVP_PKEY_derive_set_peer GRPC_SHADOW_EVP_PKEY_derive_set_peer
+#define EVP_PKEY_encrypt GRPC_SHADOW_EVP_PKEY_encrypt
+#define EVP_PKEY_encrypt_init GRPC_SHADOW_EVP_PKEY_encrypt_init
+#define EVP_PKEY_free GRPC_SHADOW_EVP_PKEY_free
+#define EVP_PKEY_get0_DH GRPC_SHADOW_EVP_PKEY_get0_DH
+#define EVP_PKEY_get0_DSA GRPC_SHADOW_EVP_PKEY_get0_DSA
+#define EVP_PKEY_get0_EC_KEY GRPC_SHADOW_EVP_PKEY_get0_EC_KEY
+#define EVP_PKEY_get0_RSA GRPC_SHADOW_EVP_PKEY_get0_RSA
+#define EVP_PKEY_get1_DH GRPC_SHADOW_EVP_PKEY_get1_DH
+#define EVP_PKEY_get1_DSA GRPC_SHADOW_EVP_PKEY_get1_DSA
+#define EVP_PKEY_get1_EC_KEY GRPC_SHADOW_EVP_PKEY_get1_EC_KEY
+#define EVP_PKEY_get1_RSA GRPC_SHADOW_EVP_PKEY_get1_RSA
+#define EVP_PKEY_get1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_get1_tls_encodedpoint
+#define EVP_PKEY_get_raw_private_key GRPC_SHADOW_EVP_PKEY_get_raw_private_key
+#define EVP_PKEY_get_raw_public_key GRPC_SHADOW_EVP_PKEY_get_raw_public_key
+#define EVP_PKEY_id GRPC_SHADOW_EVP_PKEY_id
+#define EVP_PKEY_is_opaque GRPC_SHADOW_EVP_PKEY_is_opaque
+#define EVP_PKEY_keygen GRPC_SHADOW_EVP_PKEY_keygen
+#define EVP_PKEY_keygen_init GRPC_SHADOW_EVP_PKEY_keygen_init
+#define EVP_PKEY_missing_parameters GRPC_SHADOW_EVP_PKEY_missing_parameters
+#define EVP_PKEY_new GRPC_SHADOW_EVP_PKEY_new
+#define EVP_PKEY_new_raw_private_key GRPC_SHADOW_EVP_PKEY_new_raw_private_key
+#define EVP_PKEY_new_raw_public_key GRPC_SHADOW_EVP_PKEY_new_raw_public_key
+#define EVP_PKEY_paramgen GRPC_SHADOW_EVP_PKEY_paramgen
+#define EVP_PKEY_paramgen_init GRPC_SHADOW_EVP_PKEY_paramgen_init
+#define EVP_PKEY_print_params GRPC_SHADOW_EVP_PKEY_print_params
+#define EVP_PKEY_print_private GRPC_SHADOW_EVP_PKEY_print_private
+#define EVP_PKEY_print_public GRPC_SHADOW_EVP_PKEY_print_public
+#define EVP_PKEY_set1_DSA GRPC_SHADOW_EVP_PKEY_set1_DSA
+#define EVP_PKEY_set1_EC_KEY GRPC_SHADOW_EVP_PKEY_set1_EC_KEY
+#define EVP_PKEY_set1_RSA GRPC_SHADOW_EVP_PKEY_set1_RSA
+#define EVP_PKEY_set1_tls_encodedpoint GRPC_SHADOW_EVP_PKEY_set1_tls_encodedpoint
+#define EVP_PKEY_set_type GRPC_SHADOW_EVP_PKEY_set_type
+#define EVP_PKEY_sign GRPC_SHADOW_EVP_PKEY_sign
+#define EVP_PKEY_sign_init GRPC_SHADOW_EVP_PKEY_sign_init
+#define EVP_PKEY_size GRPC_SHADOW_EVP_PKEY_size
+#define EVP_PKEY_type GRPC_SHADOW_EVP_PKEY_type
+#define EVP_PKEY_up_ref GRPC_SHADOW_EVP_PKEY_up_ref
+#define EVP_PKEY_verify GRPC_SHADOW_EVP_PKEY_verify
+#define EVP_PKEY_verify_init GRPC_SHADOW_EVP_PKEY_verify_init
+#define EVP_PKEY_verify_recover GRPC_SHADOW_EVP_PKEY_verify_recover
+#define EVP_PKEY_verify_recover_init GRPC_SHADOW_EVP_PKEY_verify_recover_init
+#define EVP_rc2_40_cbc GRPC_SHADOW_EVP_rc2_40_cbc
+#define EVP_rc2_cbc GRPC_SHADOW_EVP_rc2_cbc
+#define EVP_rc4 GRPC_SHADOW_EVP_rc4
+#define EVP_sha1 GRPC_SHADOW_EVP_sha1
+#define EVP_sha224 GRPC_SHADOW_EVP_sha224
+#define EVP_sha256 GRPC_SHADOW_EVP_sha256
+#define EVP_sha384 GRPC_SHADOW_EVP_sha384
+#define EVP_sha512 GRPC_SHADOW_EVP_sha512
+#define EVP_SignFinal GRPC_SHADOW_EVP_SignFinal
+#define EVP_SignInit GRPC_SHADOW_EVP_SignInit
+#define EVP_SignInit_ex GRPC_SHADOW_EVP_SignInit_ex
+#define EVP_SignUpdate GRPC_SHADOW_EVP_SignUpdate
+#define EVP_tls_cbc_copy_mac GRPC_SHADOW_EVP_tls_cbc_copy_mac
+#define EVP_tls_cbc_digest_record GRPC_SHADOW_EVP_tls_cbc_digest_record
+#define EVP_tls_cbc_record_digest_supported GRPC_SHADOW_EVP_tls_cbc_record_digest_supported
+#define EVP_tls_cbc_remove_padding GRPC_SHADOW_EVP_tls_cbc_remove_padding
+#define EVP_VerifyFinal GRPC_SHADOW_EVP_VerifyFinal
+#define EVP_VerifyInit GRPC_SHADOW_EVP_VerifyInit
+#define EVP_VerifyInit_ex GRPC_SHADOW_EVP_VerifyInit_ex
+#define EVP_VerifyUpdate GRPC_SHADOW_EVP_VerifyUpdate
+#define EXTENDED_KEY_USAGE_free GRPC_SHADOW_EXTENDED_KEY_USAGE_free
+#define EXTENDED_KEY_USAGE_it GRPC_SHADOW_EXTENDED_KEY_USAGE_it
+#define EXTENDED_KEY_USAGE_new GRPC_SHADOW_EXTENDED_KEY_USAGE_new
+#define FIPS_mode GRPC_SHADOW_FIPS_mode
+#define FIPS_mode_set GRPC_SHADOW_FIPS_mode_set
+#define gcm_ghash_avx GRPC_SHADOW_gcm_ghash_avx
+#define gcm_ghash_clmul GRPC_SHADOW_gcm_ghash_clmul
+#define gcm_ghash_nohw GRPC_SHADOW_gcm_ghash_nohw
+#define gcm_ghash_ssse3 GRPC_SHADOW_gcm_ghash_ssse3
+#define gcm_gmult_avx GRPC_SHADOW_gcm_gmult_avx
+#define gcm_gmult_clmul GRPC_SHADOW_gcm_gmult_clmul
+#define gcm_gmult_nohw GRPC_SHADOW_gcm_gmult_nohw
+#define gcm_gmult_ssse3 GRPC_SHADOW_gcm_gmult_ssse3
+#define gcm_init_avx GRPC_SHADOW_gcm_init_avx
+#define gcm_init_clmul GRPC_SHADOW_gcm_init_clmul
+#define gcm_init_nohw GRPC_SHADOW_gcm_init_nohw
+#define gcm_init_ssse3 GRPC_SHADOW_gcm_init_ssse3
+#define GENERAL_NAME_cmp GRPC_SHADOW_GENERAL_NAME_cmp
+#define GENERAL_NAME_dup GRPC_SHADOW_GENERAL_NAME_dup
+#define GENERAL_NAME_free GRPC_SHADOW_GENERAL_NAME_free
+#define GENERAL_NAME_get0_otherName GRPC_SHADOW_GENERAL_NAME_get0_otherName
+#define GENERAL_NAME_get0_value GRPC_SHADOW_GENERAL_NAME_get0_value
+#define GENERAL_NAME_it GRPC_SHADOW_GENERAL_NAME_it
+#define GENERAL_NAME_new GRPC_SHADOW_GENERAL_NAME_new
+#define GENERAL_NAME_print GRPC_SHADOW_GENERAL_NAME_print
+#define GENERAL_NAME_set0_othername GRPC_SHADOW_GENERAL_NAME_set0_othername
+#define GENERAL_NAME_set0_value GRPC_SHADOW_GENERAL_NAME_set0_value
+#define GENERAL_NAMES_free GRPC_SHADOW_GENERAL_NAMES_free
+#define GENERAL_NAMES_it GRPC_SHADOW_GENERAL_NAMES_it
+#define GENERAL_NAMES_new GRPC_SHADOW_GENERAL_NAMES_new
+#define GENERAL_SUBTREE_free GRPC_SHADOW_GENERAL_SUBTREE_free
+#define GENERAL_SUBTREE_it GRPC_SHADOW_GENERAL_SUBTREE_it
+#define GENERAL_SUBTREE_new GRPC_SHADOW_GENERAL_SUBTREE_new
+#define HKDF GRPC_SHADOW_HKDF
+#define HKDF_expand GRPC_SHADOW_HKDF_expand
+#define HKDF_extract GRPC_SHADOW_HKDF_extract
+#define HMAC GRPC_SHADOW_HMAC
+#define HMAC_CTX_cleanup GRPC_SHADOW_HMAC_CTX_cleanup
+#define HMAC_CTX_copy GRPC_SHADOW_HMAC_CTX_copy
+#define HMAC_CTX_copy_ex GRPC_SHADOW_HMAC_CTX_copy_ex
+#define HMAC_CTX_free GRPC_SHADOW_HMAC_CTX_free
+#define HMAC_CTX_init GRPC_SHADOW_HMAC_CTX_init
+#define HMAC_CTX_new GRPC_SHADOW_HMAC_CTX_new
+#define HMAC_CTX_reset GRPC_SHADOW_HMAC_CTX_reset
+#define HMAC_Final GRPC_SHADOW_HMAC_Final
+#define HMAC_Init GRPC_SHADOW_HMAC_Init
+#define HMAC_Init_ex GRPC_SHADOW_HMAC_Init_ex
+#define HMAC_size GRPC_SHADOW_HMAC_size
+#define HMAC_Update GRPC_SHADOW_HMAC_Update
+#define HRSS_decap GRPC_SHADOW_HRSS_decap
+#define HRSS_encap GRPC_SHADOW_HRSS_encap
+#define HRSS_generate_key GRPC_SHADOW_HRSS_generate_key
+#define HRSS_marshal_public_key GRPC_SHADOW_HRSS_marshal_public_key
+#define HRSS_parse_public_key GRPC_SHADOW_HRSS_parse_public_key
+#define HRSS_poly3_invert GRPC_SHADOW_HRSS_poly3_invert
+#define HRSS_poly3_mul GRPC_SHADOW_HRSS_poly3_mul
+#define i2a_ACCESS_DESCRIPTION GRPC_SHADOW_i2a_ACCESS_DESCRIPTION
+#define i2a_ASN1_ENUMERATED GRPC_SHADOW_i2a_ASN1_ENUMERATED
+#define i2a_ASN1_INTEGER GRPC_SHADOW_i2a_ASN1_INTEGER
+#define i2a_ASN1_OBJECT GRPC_SHADOW_i2a_ASN1_OBJECT
+#define i2a_ASN1_STRING GRPC_SHADOW_i2a_ASN1_STRING
+#define i2c_ASN1_BIT_STRING GRPC_SHADOW_i2c_ASN1_BIT_STRING
+#define i2c_ASN1_INTEGER GRPC_SHADOW_i2c_ASN1_INTEGER
+#define i2d_ACCESS_DESCRIPTION GRPC_SHADOW_i2d_ACCESS_DESCRIPTION
+#define i2d_ASN1_BIT_STRING GRPC_SHADOW_i2d_ASN1_BIT_STRING
+#define i2d_ASN1_BMPSTRING GRPC_SHADOW_i2d_ASN1_BMPSTRING
+#define i2d_ASN1_BOOLEAN GRPC_SHADOW_i2d_ASN1_BOOLEAN
+#define i2d_ASN1_ENUMERATED GRPC_SHADOW_i2d_ASN1_ENUMERATED
+#define i2d_ASN1_GENERALIZEDTIME GRPC_SHADOW_i2d_ASN1_GENERALIZEDTIME
+#define i2d_ASN1_GENERALSTRING GRPC_SHADOW_i2d_ASN1_GENERALSTRING
+#define i2d_ASN1_IA5STRING GRPC_SHADOW_i2d_ASN1_IA5STRING
+#define i2d_ASN1_INTEGER GRPC_SHADOW_i2d_ASN1_INTEGER
+#define i2d_ASN1_NULL GRPC_SHADOW_i2d_ASN1_NULL
+#define i2d_ASN1_OBJECT GRPC_SHADOW_i2d_ASN1_OBJECT
+#define i2d_ASN1_OCTET_STRING GRPC_SHADOW_i2d_ASN1_OCTET_STRING
+#define i2d_ASN1_PRINTABLE GRPC_SHADOW_i2d_ASN1_PRINTABLE
+#define i2d_ASN1_PRINTABLESTRING GRPC_SHADOW_i2d_ASN1_PRINTABLESTRING
+#define i2d_ASN1_SEQUENCE_ANY GRPC_SHADOW_i2d_ASN1_SEQUENCE_ANY
+#define i2d_ASN1_SET_ANY GRPC_SHADOW_i2d_ASN1_SET_ANY
+#define i2d_ASN1_T61STRING GRPC_SHADOW_i2d_ASN1_T61STRING
+#define i2d_ASN1_TIME GRPC_SHADOW_i2d_ASN1_TIME
+#define i2d_ASN1_TYPE GRPC_SHADOW_i2d_ASN1_TYPE
+#define i2d_ASN1_UNIVERSALSTRING GRPC_SHADOW_i2d_ASN1_UNIVERSALSTRING
+#define i2d_ASN1_UTCTIME GRPC_SHADOW_i2d_ASN1_UTCTIME
+#define i2d_ASN1_UTF8STRING GRPC_SHADOW_i2d_ASN1_UTF8STRING
+#define i2d_ASN1_VISIBLESTRING GRPC_SHADOW_i2d_ASN1_VISIBLESTRING
+#define i2d_AUTHORITY_INFO_ACCESS GRPC_SHADOW_i2d_AUTHORITY_INFO_ACCESS
+#define i2d_AUTHORITY_KEYID GRPC_SHADOW_i2d_AUTHORITY_KEYID
+#define i2d_BASIC_CONSTRAINTS GRPC_SHADOW_i2d_BASIC_CONSTRAINTS
+#define i2d_CERTIFICATEPOLICIES GRPC_SHADOW_i2d_CERTIFICATEPOLICIES
+#define i2d_CRL_DIST_POINTS GRPC_SHADOW_i2d_CRL_DIST_POINTS
+#define i2d_DHparams GRPC_SHADOW_i2d_DHparams
+#define i2d_DHparams_bio GRPC_SHADOW_i2d_DHparams_bio
+#define i2d_DIRECTORYSTRING GRPC_SHADOW_i2d_DIRECTORYSTRING
+#define i2d_DISPLAYTEXT GRPC_SHADOW_i2d_DISPLAYTEXT
+#define i2d_DIST_POINT GRPC_SHADOW_i2d_DIST_POINT
+#define i2d_DIST_POINT_NAME GRPC_SHADOW_i2d_DIST_POINT_NAME
+#define i2d_DSAparams GRPC_SHADOW_i2d_DSAparams
+#define i2d_DSAPrivateKey GRPC_SHADOW_i2d_DSAPrivateKey
+#define i2d_DSAPrivateKey_bio GRPC_SHADOW_i2d_DSAPrivateKey_bio
+#define i2d_DSAPrivateKey_fp GRPC_SHADOW_i2d_DSAPrivateKey_fp
+#define i2d_DSA_PUBKEY GRPC_SHADOW_i2d_DSA_PUBKEY
+#define i2d_DSA_PUBKEY_bio GRPC_SHADOW_i2d_DSA_PUBKEY_bio
+#define i2d_DSA_PUBKEY_fp GRPC_SHADOW_i2d_DSA_PUBKEY_fp
+#define i2d_DSAPublicKey GRPC_SHADOW_i2d_DSAPublicKey
+#define i2d_DSA_SIG GRPC_SHADOW_i2d_DSA_SIG
+#define i2d_ECDSA_SIG GRPC_SHADOW_i2d_ECDSA_SIG
+#define i2d_ECParameters GRPC_SHADOW_i2d_ECParameters
+#define i2d_ECPrivateKey GRPC_SHADOW_i2d_ECPrivateKey
+#define i2d_ECPrivateKey_bio GRPC_SHADOW_i2d_ECPrivateKey_bio
+#define i2d_ECPrivateKey_fp GRPC_SHADOW_i2d_ECPrivateKey_fp
+#define i2d_EC_PUBKEY GRPC_SHADOW_i2d_EC_PUBKEY
+#define i2d_EC_PUBKEY_bio GRPC_SHADOW_i2d_EC_PUBKEY_bio
+#define i2d_EC_PUBKEY_fp GRPC_SHADOW_i2d_EC_PUBKEY_fp
+#define i2d_EDIPARTYNAME GRPC_SHADOW_i2d_EDIPARTYNAME
+#define i2d_EXTENDED_KEY_USAGE GRPC_SHADOW_i2d_EXTENDED_KEY_USAGE
+#define i2d_GENERAL_NAME GRPC_SHADOW_i2d_GENERAL_NAME
+#define i2d_GENERAL_NAMES GRPC_SHADOW_i2d_GENERAL_NAMES
+#define i2d_ISSUING_DIST_POINT GRPC_SHADOW_i2d_ISSUING_DIST_POINT
+#define i2d_NETSCAPE_SPKAC GRPC_SHADOW_i2d_NETSCAPE_SPKAC
+#define i2d_NETSCAPE_SPKI GRPC_SHADOW_i2d_NETSCAPE_SPKI
+#define i2d_NOTICEREF GRPC_SHADOW_i2d_NOTICEREF
+#define i2d_OTHERNAME GRPC_SHADOW_i2d_OTHERNAME
+#define i2d_PKCS12 GRPC_SHADOW_i2d_PKCS12
+#define i2d_PKCS12_bio GRPC_SHADOW_i2d_PKCS12_bio
+#define i2d_PKCS12_fp GRPC_SHADOW_i2d_PKCS12_fp
+#define i2d_PKCS7 GRPC_SHADOW_i2d_PKCS7
+#define i2d_PKCS7_bio GRPC_SHADOW_i2d_PKCS7_bio
+#define i2d_PKCS8_bio GRPC_SHADOW_i2d_PKCS8_bio
+#define i2d_PKCS8_fp GRPC_SHADOW_i2d_PKCS8_fp
+#define i2d_PKCS8PrivateKey_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_bio
+#define i2d_PKCS8PrivateKey_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_fp
+#define i2d_PKCS8PrivateKeyInfo_bio GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_bio
+#define i2d_PKCS8PrivateKeyInfo_fp GRPC_SHADOW_i2d_PKCS8PrivateKeyInfo_fp
+#define i2d_PKCS8PrivateKey_nid_bio GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_bio
+#define i2d_PKCS8PrivateKey_nid_fp GRPC_SHADOW_i2d_PKCS8PrivateKey_nid_fp
+#define i2d_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO
+#define i2d_PKCS8_PRIV_KEY_INFO_bio GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_bio
+#define i2d_PKCS8_PRIV_KEY_INFO_fp GRPC_SHADOW_i2d_PKCS8_PRIV_KEY_INFO_fp
+#define i2d_PKEY_USAGE_PERIOD GRPC_SHADOW_i2d_PKEY_USAGE_PERIOD
+#define i2d_POLICYINFO GRPC_SHADOW_i2d_POLICYINFO
+#define i2d_POLICYQUALINFO GRPC_SHADOW_i2d_POLICYQUALINFO
+#define i2d_PrivateKey GRPC_SHADOW_i2d_PrivateKey
+#define i2d_PrivateKey_bio GRPC_SHADOW_i2d_PrivateKey_bio
+#define i2d_PrivateKey_fp GRPC_SHADOW_i2d_PrivateKey_fp
+#define i2d_PROXY_CERT_INFO_EXTENSION GRPC_SHADOW_i2d_PROXY_CERT_INFO_EXTENSION
+#define i2d_PROXY_POLICY GRPC_SHADOW_i2d_PROXY_POLICY
+#define i2d_PUBKEY GRPC_SHADOW_i2d_PUBKEY
+#define i2d_PUBKEY_bio GRPC_SHADOW_i2d_PUBKEY_bio
+#define i2d_PUBKEY_fp GRPC_SHADOW_i2d_PUBKEY_fp
+#define i2d_PublicKey GRPC_SHADOW_i2d_PublicKey
+#define i2d_re_X509_CRL_tbs GRPC_SHADOW_i2d_re_X509_CRL_tbs
+#define i2d_re_X509_REQ_tbs GRPC_SHADOW_i2d_re_X509_REQ_tbs
+#define i2d_re_X509_tbs GRPC_SHADOW_i2d_re_X509_tbs
+#define i2d_RSAPrivateKey GRPC_SHADOW_i2d_RSAPrivateKey
+#define i2d_RSAPrivateKey_bio GRPC_SHADOW_i2d_RSAPrivateKey_bio
+#define i2d_RSAPrivateKey_fp GRPC_SHADOW_i2d_RSAPrivateKey_fp
+#define i2d_RSA_PSS_PARAMS GRPC_SHADOW_i2d_RSA_PSS_PARAMS
+#define i2d_RSA_PUBKEY GRPC_SHADOW_i2d_RSA_PUBKEY
+#define i2d_RSA_PUBKEY_bio GRPC_SHADOW_i2d_RSA_PUBKEY_bio
+#define i2d_RSA_PUBKEY_fp GRPC_SHADOW_i2d_RSA_PUBKEY_fp
+#define i2d_RSAPublicKey GRPC_SHADOW_i2d_RSAPublicKey
+#define i2d_RSAPublicKey_bio GRPC_SHADOW_i2d_RSAPublicKey_bio
+#define i2d_RSAPublicKey_fp GRPC_SHADOW_i2d_RSAPublicKey_fp
+#define i2d_SSL_SESSION GRPC_SHADOW_i2d_SSL_SESSION
+#define i2d_SSL_SESSION_bio GRPC_SHADOW_i2d_SSL_SESSION_bio
+#define i2d_SXNET GRPC_SHADOW_i2d_SXNET
+#define i2d_SXNETID GRPC_SHADOW_i2d_SXNETID
+#define i2d_USERNOTICE GRPC_SHADOW_i2d_USERNOTICE
+#define i2d_X509 GRPC_SHADOW_i2d_X509
+#define i2d_X509_ALGOR GRPC_SHADOW_i2d_X509_ALGOR
+#define i2d_X509_ALGORS GRPC_SHADOW_i2d_X509_ALGORS
+#define i2d_X509_ATTRIBUTE GRPC_SHADOW_i2d_X509_ATTRIBUTE
+#define i2d_X509_AUX GRPC_SHADOW_i2d_X509_AUX
+#define i2d_X509_bio GRPC_SHADOW_i2d_X509_bio
+#define i2d_X509_CERT_AUX GRPC_SHADOW_i2d_X509_CERT_AUX
+#define i2d_X509_CINF GRPC_SHADOW_i2d_X509_CINF
+#define i2d_X509_CRL GRPC_SHADOW_i2d_X509_CRL
+#define i2d_X509_CRL_bio GRPC_SHADOW_i2d_X509_CRL_bio
+#define i2d_X509_CRL_fp GRPC_SHADOW_i2d_X509_CRL_fp
+#define i2d_X509_CRL_INFO GRPC_SHADOW_i2d_X509_CRL_INFO
+#define i2d_X509_EXTENSION GRPC_SHADOW_i2d_X509_EXTENSION
+#define i2d_X509_EXTENSIONS GRPC_SHADOW_i2d_X509_EXTENSIONS
+#define i2d_X509_fp GRPC_SHADOW_i2d_X509_fp
+#define i2d_X509_NAME GRPC_SHADOW_i2d_X509_NAME
+#define i2d_X509_NAME_ENTRY GRPC_SHADOW_i2d_X509_NAME_ENTRY
+#define i2d_X509_PUBKEY GRPC_SHADOW_i2d_X509_PUBKEY
+#define i2d_X509_REQ GRPC_SHADOW_i2d_X509_REQ
+#define i2d_X509_REQ_bio GRPC_SHADOW_i2d_X509_REQ_bio
+#define i2d_X509_REQ_fp GRPC_SHADOW_i2d_X509_REQ_fp
+#define i2d_X509_REQ_INFO GRPC_SHADOW_i2d_X509_REQ_INFO
+#define i2d_X509_REVOKED GRPC_SHADOW_i2d_X509_REVOKED
+#define i2d_X509_SIG GRPC_SHADOW_i2d_X509_SIG
+#define i2d_X509_VAL GRPC_SHADOW_i2d_X509_VAL
+#define i2o_ECPublicKey GRPC_SHADOW_i2o_ECPublicKey
+#define i2s_ASN1_ENUMERATED GRPC_SHADOW_i2s_ASN1_ENUMERATED
+#define i2s_ASN1_ENUMERATED_TABLE GRPC_SHADOW_i2s_ASN1_ENUMERATED_TABLE
+#define i2s_ASN1_INTEGER GRPC_SHADOW_i2s_ASN1_INTEGER
+#define i2s_ASN1_OCTET_STRING GRPC_SHADOW_i2s_ASN1_OCTET_STRING
+#define i2t_ASN1_OBJECT GRPC_SHADOW_i2t_ASN1_OBJECT
+#define i2v_ASN1_BIT_STRING GRPC_SHADOW_i2v_ASN1_BIT_STRING
+#define i2v_GENERAL_NAME GRPC_SHADOW_i2v_GENERAL_NAME
+#define i2v_GENERAL_NAMES GRPC_SHADOW_i2v_GENERAL_NAMES
+#define ISSUING_DIST_POINT_free GRPC_SHADOW_ISSUING_DIST_POINT_free
+#define ISSUING_DIST_POINT_it GRPC_SHADOW_ISSUING_DIST_POINT_it
+#define ISSUING_DIST_POINT_new GRPC_SHADOW_ISSUING_DIST_POINT_new
+#define kBoringSSLRSASqrtTwo GRPC_SHADOW_kBoringSSLRSASqrtTwo
+#define kBoringSSLRSASqrtTwoLen GRPC_SHADOW_kBoringSSLRSASqrtTwoLen
+#define kOpenSSLReasonStringData GRPC_SHADOW_kOpenSSLReasonStringData
+#define kOpenSSLReasonValues GRPC_SHADOW_kOpenSSLReasonValues
+#define kOpenSSLReasonValuesLen GRPC_SHADOW_kOpenSSLReasonValuesLen
+#define level_add_node GRPC_SHADOW_level_add_node
+#define level_find_node GRPC_SHADOW_level_find_node
+#define lh_delete GRPC_SHADOW_lh_delete
+#define lh_doall_arg GRPC_SHADOW_lh_doall_arg
+#define lh_free GRPC_SHADOW_lh_free
+#define lh_insert GRPC_SHADOW_lh_insert
+#define lh_new GRPC_SHADOW_lh_new
+#define lh_num_items GRPC_SHADOW_lh_num_items
+#define lh_retrieve GRPC_SHADOW_lh_retrieve
+#define lh_retrieve_key GRPC_SHADOW_lh_retrieve_key
+#define lh_strhash GRPC_SHADOW_lh_strhash
+#define MD4 GRPC_SHADOW_MD4
+#define md4_block_data_order GRPC_SHADOW_md4_block_data_order
+#define MD4_Final GRPC_SHADOW_MD4_Final
+#define MD4_Init GRPC_SHADOW_MD4_Init
+#define MD4_Transform GRPC_SHADOW_MD4_Transform
+#define MD4_Update GRPC_SHADOW_MD4_Update
+#define MD5 GRPC_SHADOW_MD5
+#define md5_block_asm_data_order GRPC_SHADOW_md5_block_asm_data_order
+#define MD5_Final GRPC_SHADOW_MD5_Final
+#define MD5_Init GRPC_SHADOW_MD5_Init
+#define MD5_Transform GRPC_SHADOW_MD5_Transform
+#define MD5_Update GRPC_SHADOW_MD5_Update
+#define METHOD_ref GRPC_SHADOW_METHOD_ref
+#define METHOD_unref GRPC_SHADOW_METHOD_unref
+#define NAME_CONSTRAINTS_check GRPC_SHADOW_NAME_CONSTRAINTS_check
+#define NAME_CONSTRAINTS_free GRPC_SHADOW_NAME_CONSTRAINTS_free
+#define NAME_CONSTRAINTS_it GRPC_SHADOW_NAME_CONSTRAINTS_it
+#define NAME_CONSTRAINTS_new GRPC_SHADOW_NAME_CONSTRAINTS_new
+#define NCONF_free GRPC_SHADOW_NCONF_free
+#define NCONF_get_section GRPC_SHADOW_NCONF_get_section
+#define NCONF_get_string GRPC_SHADOW_NCONF_get_string
+#define NCONF_load GRPC_SHADOW_NCONF_load
+#define NCONF_load_bio GRPC_SHADOW_NCONF_load_bio
+#define NCONF_new GRPC_SHADOW_NCONF_new
+#define NETSCAPE_SPKAC_free GRPC_SHADOW_NETSCAPE_SPKAC_free
+#define NETSCAPE_SPKAC_it GRPC_SHADOW_NETSCAPE_SPKAC_it
+#define NETSCAPE_SPKAC_new GRPC_SHADOW_NETSCAPE_SPKAC_new
+#define NETSCAPE_SPKI_b64_decode GRPC_SHADOW_NETSCAPE_SPKI_b64_decode
+#define NETSCAPE_SPKI_b64_encode GRPC_SHADOW_NETSCAPE_SPKI_b64_encode
+#define NETSCAPE_SPKI_free GRPC_SHADOW_NETSCAPE_SPKI_free
+#define NETSCAPE_SPKI_get_pubkey GRPC_SHADOW_NETSCAPE_SPKI_get_pubkey
+#define NETSCAPE_SPKI_it GRPC_SHADOW_NETSCAPE_SPKI_it
+#define NETSCAPE_SPKI_new GRPC_SHADOW_NETSCAPE_SPKI_new
+#define NETSCAPE_SPKI_set_pubkey GRPC_SHADOW_NETSCAPE_SPKI_set_pubkey
+#define NETSCAPE_SPKI_sign GRPC_SHADOW_NETSCAPE_SPKI_sign
+#define NETSCAPE_SPKI_verify GRPC_SHADOW_NETSCAPE_SPKI_verify
+#define NOTICEREF_free GRPC_SHADOW_NOTICEREF_free
+#define NOTICEREF_it GRPC_SHADOW_NOTICEREF_it
+#define NOTICEREF_new GRPC_SHADOW_NOTICEREF_new
+#define o2i_ECPublicKey GRPC_SHADOW_o2i_ECPublicKey
+#define OBJ_cbs2nid GRPC_SHADOW_OBJ_cbs2nid
+#define OBJ_cleanup GRPC_SHADOW_OBJ_cleanup
+#define OBJ_cmp GRPC_SHADOW_OBJ_cmp
+#define OBJ_create GRPC_SHADOW_OBJ_create
+#define OBJ_dup GRPC_SHADOW_OBJ_dup
+#define OBJ_find_sigid_algs GRPC_SHADOW_OBJ_find_sigid_algs
+#define OBJ_find_sigid_by_algs GRPC_SHADOW_OBJ_find_sigid_by_algs
+#define OBJ_get0_data GRPC_SHADOW_OBJ_get0_data
+#define OBJ_length GRPC_SHADOW_OBJ_length
+#define OBJ_ln2nid GRPC_SHADOW_OBJ_ln2nid
+#define OBJ_nid2cbb GRPC_SHADOW_OBJ_nid2cbb
+#define OBJ_nid2ln GRPC_SHADOW_OBJ_nid2ln
+#define OBJ_nid2obj GRPC_SHADOW_OBJ_nid2obj
+#define OBJ_nid2sn GRPC_SHADOW_OBJ_nid2sn
+#define OBJ_obj2nid GRPC_SHADOW_OBJ_obj2nid
+#define OBJ_obj2txt GRPC_SHADOW_OBJ_obj2txt
+#define OBJ_sn2nid GRPC_SHADOW_OBJ_sn2nid
+#define OBJ_txt2nid GRPC_SHADOW_OBJ_txt2nid
+#define OBJ_txt2obj GRPC_SHADOW_OBJ_txt2obj
+#define OpenSSL_add_all_algorithms GRPC_SHADOW_OpenSSL_add_all_algorithms
+#define OPENSSL_add_all_algorithms_conf GRPC_SHADOW_OPENSSL_add_all_algorithms_conf
+#define OpenSSL_add_all_ciphers GRPC_SHADOW_OpenSSL_add_all_ciphers
+#define OpenSSL_add_all_digests GRPC_SHADOW_OpenSSL_add_all_digests
+#define OPENSSL_built_in_curves GRPC_SHADOW_OPENSSL_built_in_curves
+#define OPENSSL_cleanse GRPC_SHADOW_OPENSSL_cleanse
+#define OPENSSL_cleanup GRPC_SHADOW_OPENSSL_cleanup
+#define OPENSSL_clear_free GRPC_SHADOW_OPENSSL_clear_free
+#define OPENSSL_config GRPC_SHADOW_OPENSSL_config
+#define OPENSSL_cpuid_setup GRPC_SHADOW_OPENSSL_cpuid_setup
+#define OPENSSL_free GRPC_SHADOW_OPENSSL_free
+#define OPENSSL_gmtime GRPC_SHADOW_OPENSSL_gmtime
+#define OPENSSL_gmtime_adj GRPC_SHADOW_OPENSSL_gmtime_adj
+#define OPENSSL_gmtime_diff GRPC_SHADOW_OPENSSL_gmtime_diff
+#define OPENSSL_hash32 GRPC_SHADOW_OPENSSL_hash32
+#define OPENSSL_ia32cap_P GRPC_SHADOW_OPENSSL_ia32cap_P
+#define OPENSSL_init_crypto GRPC_SHADOW_OPENSSL_init_crypto
+#define OPENSSL_init_ssl GRPC_SHADOW_OPENSSL_init_ssl
+#define OPENSSL_load_builtin_modules GRPC_SHADOW_OPENSSL_load_builtin_modules
+#define OPENSSL_malloc GRPC_SHADOW_OPENSSL_malloc
+#define OPENSSL_malloc_init GRPC_SHADOW_OPENSSL_malloc_init
+#define OPENSSL_memdup GRPC_SHADOW_OPENSSL_memdup
+#define OPENSSL_no_config GRPC_SHADOW_OPENSSL_no_config
+#define OPENSSL_realloc GRPC_SHADOW_OPENSSL_realloc
+#define OPENSSL_strcasecmp GRPC_SHADOW_OPENSSL_strcasecmp
+#define OPENSSL_strdup GRPC_SHADOW_OPENSSL_strdup
+#define OPENSSL_strlcat GRPC_SHADOW_OPENSSL_strlcat
+#define OPENSSL_strlcpy GRPC_SHADOW_OPENSSL_strlcpy
+#define OPENSSL_strncasecmp GRPC_SHADOW_OPENSSL_strncasecmp
+#define OPENSSL_strndup GRPC_SHADOW_OPENSSL_strndup
+#define OPENSSL_strnlen GRPC_SHADOW_OPENSSL_strnlen
+#define OPENSSL_tolower GRPC_SHADOW_OPENSSL_tolower
+#define OpenSSL_version GRPC_SHADOW_OpenSSL_version
+#define OpenSSL_version_num GRPC_SHADOW_OpenSSL_version_num
+#define OTHERNAME_cmp GRPC_SHADOW_OTHERNAME_cmp
+#define OTHERNAME_free GRPC_SHADOW_OTHERNAME_free
+#define OTHERNAME_it GRPC_SHADOW_OTHERNAME_it
+#define OTHERNAME_new GRPC_SHADOW_OTHERNAME_new
+#define PEM_ASN1_read GRPC_SHADOW_PEM_ASN1_read
+#define PEM_ASN1_read_bio GRPC_SHADOW_PEM_ASN1_read_bio
+#define PEM_ASN1_write GRPC_SHADOW_PEM_ASN1_write
+#define PEM_ASN1_write_bio GRPC_SHADOW_PEM_ASN1_write_bio
+#define PEM_bytes_read_bio GRPC_SHADOW_PEM_bytes_read_bio
+#define PEM_def_callback GRPC_SHADOW_PEM_def_callback
+#define PEM_dek_info GRPC_SHADOW_PEM_dek_info
+#define PEM_do_header GRPC_SHADOW_PEM_do_header
+#define PEM_get_EVP_CIPHER_INFO GRPC_SHADOW_PEM_get_EVP_CIPHER_INFO
+#define PEM_proc_type GRPC_SHADOW_PEM_proc_type
+#define PEM_read GRPC_SHADOW_PEM_read
+#define PEM_read_bio GRPC_SHADOW_PEM_read_bio
+#define PEM_read_bio_DHparams GRPC_SHADOW_PEM_read_bio_DHparams
+#define PEM_read_bio_DSAparams GRPC_SHADOW_PEM_read_bio_DSAparams
+#define PEM_read_bio_DSAPrivateKey GRPC_SHADOW_PEM_read_bio_DSAPrivateKey
+#define PEM_read_bio_DSA_PUBKEY GRPC_SHADOW_PEM_read_bio_DSA_PUBKEY
+#define PEM_read_bio_ECPrivateKey GRPC_SHADOW_PEM_read_bio_ECPrivateKey
+#define PEM_read_bio_EC_PUBKEY GRPC_SHADOW_PEM_read_bio_EC_PUBKEY
+#define PEM_read_bio_PKCS7 GRPC_SHADOW_PEM_read_bio_PKCS7
+#define PEM_read_bio_PKCS8 GRPC_SHADOW_PEM_read_bio_PKCS8
+#define PEM_read_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_read_bio_PrivateKey GRPC_SHADOW_PEM_read_bio_PrivateKey
+#define PEM_read_bio_PUBKEY GRPC_SHADOW_PEM_read_bio_PUBKEY
+#define PEM_read_bio_RSAPrivateKey GRPC_SHADOW_PEM_read_bio_RSAPrivateKey
+#define PEM_read_bio_RSA_PUBKEY GRPC_SHADOW_PEM_read_bio_RSA_PUBKEY
+#define PEM_read_bio_RSAPublicKey GRPC_SHADOW_PEM_read_bio_RSAPublicKey
+#define PEM_read_bio_SSL_SESSION GRPC_SHADOW_PEM_read_bio_SSL_SESSION
+#define PEM_read_bio_X509 GRPC_SHADOW_PEM_read_bio_X509
+#define PEM_read_bio_X509_AUX GRPC_SHADOW_PEM_read_bio_X509_AUX
+#define PEM_read_bio_X509_CRL GRPC_SHADOW_PEM_read_bio_X509_CRL
+#define PEM_read_bio_X509_REQ GRPC_SHADOW_PEM_read_bio_X509_REQ
+#define PEM_read_DHparams GRPC_SHADOW_PEM_read_DHparams
+#define PEM_read_DSAparams GRPC_SHADOW_PEM_read_DSAparams
+#define PEM_read_DSAPrivateKey GRPC_SHADOW_PEM_read_DSAPrivateKey
+#define PEM_read_DSA_PUBKEY GRPC_SHADOW_PEM_read_DSA_PUBKEY
+#define PEM_read_ECPrivateKey GRPC_SHADOW_PEM_read_ECPrivateKey
+#define PEM_read_EC_PUBKEY GRPC_SHADOW_PEM_read_EC_PUBKEY
+#define PEM_read_PKCS7 GRPC_SHADOW_PEM_read_PKCS7
+#define PEM_read_PKCS8 GRPC_SHADOW_PEM_read_PKCS8
+#define PEM_read_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_read_PKCS8_PRIV_KEY_INFO
+#define PEM_read_PrivateKey GRPC_SHADOW_PEM_read_PrivateKey
+#define PEM_read_PUBKEY GRPC_SHADOW_PEM_read_PUBKEY
+#define PEM_read_RSAPrivateKey GRPC_SHADOW_PEM_read_RSAPrivateKey
+#define PEM_read_RSA_PUBKEY GRPC_SHADOW_PEM_read_RSA_PUBKEY
+#define PEM_read_RSAPublicKey GRPC_SHADOW_PEM_read_RSAPublicKey
+#define PEM_read_SSL_SESSION GRPC_SHADOW_PEM_read_SSL_SESSION
+#define PEM_read_X509 GRPC_SHADOW_PEM_read_X509
+#define PEM_read_X509_AUX GRPC_SHADOW_PEM_read_X509_AUX
+#define PEM_read_X509_CRL GRPC_SHADOW_PEM_read_X509_CRL
+#define PEM_read_X509_REQ GRPC_SHADOW_PEM_read_X509_REQ
+#define PEM_write GRPC_SHADOW_PEM_write
+#define PEM_write_bio GRPC_SHADOW_PEM_write_bio
+#define PEM_write_bio_DHparams GRPC_SHADOW_PEM_write_bio_DHparams
+#define PEM_write_bio_DSAparams GRPC_SHADOW_PEM_write_bio_DSAparams
+#define PEM_write_bio_DSAPrivateKey GRPC_SHADOW_PEM_write_bio_DSAPrivateKey
+#define PEM_write_bio_DSA_PUBKEY GRPC_SHADOW_PEM_write_bio_DSA_PUBKEY
+#define PEM_write_bio_ECPrivateKey GRPC_SHADOW_PEM_write_bio_ECPrivateKey
+#define PEM_write_bio_EC_PUBKEY GRPC_SHADOW_PEM_write_bio_EC_PUBKEY
+#define PEM_write_bio_PKCS7 GRPC_SHADOW_PEM_write_bio_PKCS7
+#define PEM_write_bio_PKCS8 GRPC_SHADOW_PEM_write_bio_PKCS8
+#define PEM_write_bio_PKCS8PrivateKey GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey
+#define PEM_write_bio_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_bio_PKCS8PrivateKey_nid
+#define PEM_write_bio_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_bio_PKCS8_PRIV_KEY_INFO
+#define PEM_write_bio_PrivateKey GRPC_SHADOW_PEM_write_bio_PrivateKey
+#define PEM_write_bio_PUBKEY GRPC_SHADOW_PEM_write_bio_PUBKEY
+#define PEM_write_bio_RSAPrivateKey GRPC_SHADOW_PEM_write_bio_RSAPrivateKey
+#define PEM_write_bio_RSA_PUBKEY GRPC_SHADOW_PEM_write_bio_RSA_PUBKEY
+#define PEM_write_bio_RSAPublicKey GRPC_SHADOW_PEM_write_bio_RSAPublicKey
+#define PEM_write_bio_SSL_SESSION GRPC_SHADOW_PEM_write_bio_SSL_SESSION
+#define PEM_write_bio_X509 GRPC_SHADOW_PEM_write_bio_X509
+#define PEM_write_bio_X509_AUX GRPC_SHADOW_PEM_write_bio_X509_AUX
+#define PEM_write_bio_X509_CRL GRPC_SHADOW_PEM_write_bio_X509_CRL
+#define PEM_write_bio_X509_REQ GRPC_SHADOW_PEM_write_bio_X509_REQ
+#define PEM_write_bio_X509_REQ_NEW GRPC_SHADOW_PEM_write_bio_X509_REQ_NEW
+#define PEM_write_DHparams GRPC_SHADOW_PEM_write_DHparams
+#define PEM_write_DSAparams GRPC_SHADOW_PEM_write_DSAparams
+#define PEM_write_DSAPrivateKey GRPC_SHADOW_PEM_write_DSAPrivateKey
+#define PEM_write_DSA_PUBKEY GRPC_SHADOW_PEM_write_DSA_PUBKEY
+#define PEM_write_ECPrivateKey GRPC_SHADOW_PEM_write_ECPrivateKey
+#define PEM_write_EC_PUBKEY GRPC_SHADOW_PEM_write_EC_PUBKEY
+#define PEM_write_PKCS7 GRPC_SHADOW_PEM_write_PKCS7
+#define PEM_write_PKCS8 GRPC_SHADOW_PEM_write_PKCS8
+#define PEM_write_PKCS8PrivateKey GRPC_SHADOW_PEM_write_PKCS8PrivateKey
+#define PEM_write_PKCS8PrivateKey_nid GRPC_SHADOW_PEM_write_PKCS8PrivateKey_nid
+#define PEM_write_PKCS8_PRIV_KEY_INFO GRPC_SHADOW_PEM_write_PKCS8_PRIV_KEY_INFO
+#define PEM_write_PrivateKey GRPC_SHADOW_PEM_write_PrivateKey
+#define PEM_write_PUBKEY GRPC_SHADOW_PEM_write_PUBKEY
+#define PEM_write_RSAPrivateKey GRPC_SHADOW_PEM_write_RSAPrivateKey
+#define PEM_write_RSA_PUBKEY GRPC_SHADOW_PEM_write_RSA_PUBKEY
+#define PEM_write_RSAPublicKey GRPC_SHADOW_PEM_write_RSAPublicKey
+#define PEM_write_SSL_SESSION GRPC_SHADOW_PEM_write_SSL_SESSION
+#define PEM_write_X509 GRPC_SHADOW_PEM_write_X509
+#define PEM_write_X509_AUX GRPC_SHADOW_PEM_write_X509_AUX
+#define PEM_write_X509_CRL GRPC_SHADOW_PEM_write_X509_CRL
+#define PEM_write_X509_REQ GRPC_SHADOW_PEM_write_X509_REQ
+#define PEM_write_X509_REQ_NEW GRPC_SHADOW_PEM_write_X509_REQ_NEW
+#define PEM_X509_INFO_read GRPC_SHADOW_PEM_X509_INFO_read
+#define PEM_X509_INFO_read_bio GRPC_SHADOW_PEM_X509_INFO_read_bio
+#define PEM_X509_INFO_write_bio GRPC_SHADOW_PEM_X509_INFO_write_bio
+#define PKCS12_create GRPC_SHADOW_PKCS12_create
+#define PKCS12_free GRPC_SHADOW_PKCS12_free
+#define PKCS12_get_key_and_certs GRPC_SHADOW_PKCS12_get_key_and_certs
+#define pkcs12_iterations_acceptable GRPC_SHADOW_pkcs12_iterations_acceptable
+#define pkcs12_key_gen GRPC_SHADOW_pkcs12_key_gen
+#define PKCS12_parse GRPC_SHADOW_PKCS12_parse
+#define PKCS12_PBE_add GRPC_SHADOW_PKCS12_PBE_add
+#define pkcs12_pbe_encrypt_init GRPC_SHADOW_pkcs12_pbe_encrypt_init
+#define PKCS12_verify_mac GRPC_SHADOW_PKCS12_verify_mac
+#define PKCS5_pbe2_decrypt_init GRPC_SHADOW_PKCS5_pbe2_decrypt_init
+#define PKCS5_pbe2_encrypt_init GRPC_SHADOW_PKCS5_pbe2_encrypt_init
+#define PKCS5_PBKDF2_HMAC GRPC_SHADOW_PKCS5_PBKDF2_HMAC
+#define PKCS5_PBKDF2_HMAC_SHA1 GRPC_SHADOW_PKCS5_PBKDF2_HMAC_SHA1
+#define pkcs7_bundle GRPC_SHADOW_pkcs7_bundle
+#define PKCS7_bundle_certificates GRPC_SHADOW_PKCS7_bundle_certificates
+#define PKCS7_bundle_CRLs GRPC_SHADOW_PKCS7_bundle_CRLs
+#define PKCS7_free GRPC_SHADOW_PKCS7_free
+#define PKCS7_get_certificates GRPC_SHADOW_PKCS7_get_certificates
+#define PKCS7_get_CRLs GRPC_SHADOW_PKCS7_get_CRLs
+#define PKCS7_get_PEM_certificates GRPC_SHADOW_PKCS7_get_PEM_certificates
+#define PKCS7_get_PEM_CRLs GRPC_SHADOW_PKCS7_get_PEM_CRLs
+#define PKCS7_get_raw_certificates GRPC_SHADOW_PKCS7_get_raw_certificates
+#define pkcs7_parse_header GRPC_SHADOW_pkcs7_parse_header
+#define PKCS7_sign GRPC_SHADOW_PKCS7_sign
+#define PKCS7_type_is_data GRPC_SHADOW_PKCS7_type_is_data
+#define PKCS7_type_is_digest GRPC_SHADOW_PKCS7_type_is_digest
+#define PKCS7_type_is_encrypted GRPC_SHADOW_PKCS7_type_is_encrypted
+#define PKCS7_type_is_enveloped GRPC_SHADOW_PKCS7_type_is_enveloped
+#define PKCS7_type_is_signed GRPC_SHADOW_PKCS7_type_is_signed
+#define PKCS7_type_is_signedAndEnveloped GRPC_SHADOW_PKCS7_type_is_signedAndEnveloped
+#define PKCS8_decrypt GRPC_SHADOW_PKCS8_decrypt
+#define PKCS8_encrypt GRPC_SHADOW_PKCS8_encrypt
+#define PKCS8_marshal_encrypted_private_key GRPC_SHADOW_PKCS8_marshal_encrypted_private_key
+#define PKCS8_parse_encrypted_private_key GRPC_SHADOW_PKCS8_parse_encrypted_private_key
+#define pkcs8_pbe_decrypt GRPC_SHADOW_pkcs8_pbe_decrypt
+#define PKCS8_pkey_get0 GRPC_SHADOW_PKCS8_pkey_get0
+#define PKCS8_pkey_set0 GRPC_SHADOW_PKCS8_pkey_set0
+#define PKCS8_PRIV_KEY_INFO_free GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_free
+#define PKCS8_PRIV_KEY_INFO_it GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_it
+#define PKCS8_PRIV_KEY_INFO_new GRPC_SHADOW_PKCS8_PRIV_KEY_INFO_new
+#define PKEY_USAGE_PERIOD_free GRPC_SHADOW_PKEY_USAGE_PERIOD_free
+#define PKEY_USAGE_PERIOD_it GRPC_SHADOW_PKEY_USAGE_PERIOD_it
+#define PKEY_USAGE_PERIOD_new GRPC_SHADOW_PKEY_USAGE_PERIOD_new
+#define policy_cache_find_data GRPC_SHADOW_policy_cache_find_data
+#define policy_cache_free GRPC_SHADOW_policy_cache_free
+#define policy_cache_set GRPC_SHADOW_policy_cache_set
+#define policy_cache_set_mapping GRPC_SHADOW_policy_cache_set_mapping
+#define POLICY_CONSTRAINTS_free GRPC_SHADOW_POLICY_CONSTRAINTS_free
+#define POLICY_CONSTRAINTS_it GRPC_SHADOW_POLICY_CONSTRAINTS_it
+#define POLICY_CONSTRAINTS_new GRPC_SHADOW_POLICY_CONSTRAINTS_new
+#define policy_data_free GRPC_SHADOW_policy_data_free
+#define policy_data_new GRPC_SHADOW_policy_data_new
+#define POLICYINFO_free GRPC_SHADOW_POLICYINFO_free
+#define POLICYINFO_it GRPC_SHADOW_POLICYINFO_it
+#define POLICYINFO_new GRPC_SHADOW_POLICYINFO_new
+#define POLICY_MAPPING_free GRPC_SHADOW_POLICY_MAPPING_free
+#define POLICY_MAPPING_it GRPC_SHADOW_POLICY_MAPPING_it
+#define POLICY_MAPPING_new GRPC_SHADOW_POLICY_MAPPING_new
+#define POLICY_MAPPINGS_it GRPC_SHADOW_POLICY_MAPPINGS_it
+#define policy_node_cmp_new GRPC_SHADOW_policy_node_cmp_new
+#define policy_node_free GRPC_SHADOW_policy_node_free
+#define policy_node_match GRPC_SHADOW_policy_node_match
+#define POLICYQUALINFO_free GRPC_SHADOW_POLICYQUALINFO_free
+#define POLICYQUALINFO_it GRPC_SHADOW_POLICYQUALINFO_it
+#define POLICYQUALINFO_new GRPC_SHADOW_POLICYQUALINFO_new
+#define poly_Rq_mul GRPC_SHADOW_poly_Rq_mul
+#define PROXY_CERT_INFO_EXTENSION_free GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_free
+#define PROXY_CERT_INFO_EXTENSION_it GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_it
+#define PROXY_CERT_INFO_EXTENSION_new GRPC_SHADOW_PROXY_CERT_INFO_EXTENSION_new
+#define PROXY_POLICY_free GRPC_SHADOW_PROXY_POLICY_free
+#define PROXY_POLICY_it GRPC_SHADOW_PROXY_POLICY_it
+#define PROXY_POLICY_new GRPC_SHADOW_PROXY_POLICY_new
+#define RAND_add GRPC_SHADOW_RAND_add
+#define RAND_bytes GRPC_SHADOW_RAND_bytes
+#define RAND_bytes_with_additional_data GRPC_SHADOW_RAND_bytes_with_additional_data
+#define RAND_cleanup GRPC_SHADOW_RAND_cleanup
+#define RAND_egd GRPC_SHADOW_RAND_egd
+#define RAND_enable_fork_unsafe_buffering GRPC_SHADOW_RAND_enable_fork_unsafe_buffering
+#define RAND_file_name GRPC_SHADOW_RAND_file_name
+#define rand_fork_unsafe_buffering_enabled GRPC_SHADOW_rand_fork_unsafe_buffering_enabled
+#define RAND_get_rand_method GRPC_SHADOW_RAND_get_rand_method
+#define RAND_load_file GRPC_SHADOW_RAND_load_file
+#define RAND_poll GRPC_SHADOW_RAND_poll
+#define RAND_pseudo_bytes GRPC_SHADOW_RAND_pseudo_bytes
+#define RAND_seed GRPC_SHADOW_RAND_seed
+#define RAND_set_rand_method GRPC_SHADOW_RAND_set_rand_method
+#define RAND_set_urandom_fd GRPC_SHADOW_RAND_set_urandom_fd
+#define RAND_SSLeay GRPC_SHADOW_RAND_SSLeay
+#define RAND_status GRPC_SHADOW_RAND_status
+#define RC4 GRPC_SHADOW_RC4
+#define RC4_set_key GRPC_SHADOW_RC4_set_key
+#define RSA_add_pkcs1_prefix GRPC_SHADOW_RSA_add_pkcs1_prefix
+#define rsa_asn1_meth GRPC_SHADOW_rsa_asn1_meth
+#define RSA_bits GRPC_SHADOW_RSA_bits
+#define RSA_blinding_on GRPC_SHADOW_RSA_blinding_on
+#define RSA_check_fips GRPC_SHADOW_RSA_check_fips
+#define RSA_check_key GRPC_SHADOW_RSA_check_key
+#define RSA_decrypt GRPC_SHADOW_RSA_decrypt
+#define rsa_default_decrypt GRPC_SHADOW_rsa_default_decrypt
+#define RSA_default_method GRPC_SHADOW_RSA_default_method
+#define rsa_default_private_transform GRPC_SHADOW_rsa_default_private_transform
+#define rsa_default_sign_raw GRPC_SHADOW_rsa_default_sign_raw
+#define rsa_default_size GRPC_SHADOW_rsa_default_size
+#define RSA_encrypt GRPC_SHADOW_RSA_encrypt
+#define RSA_flags GRPC_SHADOW_RSA_flags
+#define RSA_free GRPC_SHADOW_RSA_free
+#define RSA_generate_key_ex GRPC_SHADOW_RSA_generate_key_ex
+#define RSA_generate_key_fips GRPC_SHADOW_RSA_generate_key_fips
+#define RSA_get0_crt_params GRPC_SHADOW_RSA_get0_crt_params
+#define RSA_get0_factors GRPC_SHADOW_RSA_get0_factors
+#define RSA_get0_key GRPC_SHADOW_RSA_get0_key
+#define RSA_get_ex_data GRPC_SHADOW_RSA_get_ex_data
+#define RSA_get_ex_new_index GRPC_SHADOW_RSA_get_ex_new_index
+#define RSA_is_opaque GRPC_SHADOW_RSA_is_opaque
+#define RSA_marshal_private_key GRPC_SHADOW_RSA_marshal_private_key
+#define RSA_marshal_public_key GRPC_SHADOW_RSA_marshal_public_key
+#define RSA_new GRPC_SHADOW_RSA_new
+#define RSA_new_method GRPC_SHADOW_RSA_new_method
+#define RSA_padding_add_none GRPC_SHADOW_RSA_padding_add_none
+#define RSA_padding_add_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_OAEP_mgf1
+#define RSA_padding_add_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_padding_add_PKCS1_PSS_mgf1
+#define RSA_padding_add_PKCS1_type_1 GRPC_SHADOW_RSA_padding_add_PKCS1_type_1
+#define RSA_padding_add_PKCS1_type_2 GRPC_SHADOW_RSA_padding_add_PKCS1_type_2
+#define RSA_padding_check_PKCS1_OAEP_mgf1 GRPC_SHADOW_RSA_padding_check_PKCS1_OAEP_mgf1
+#define RSA_padding_check_PKCS1_type_1 GRPC_SHADOW_RSA_padding_check_PKCS1_type_1
+#define RSA_padding_check_PKCS1_type_2 GRPC_SHADOW_RSA_padding_check_PKCS1_type_2
+#define RSA_parse_private_key GRPC_SHADOW_RSA_parse_private_key
+#define RSA_parse_public_key GRPC_SHADOW_RSA_parse_public_key
+#define rsa_pkey_meth GRPC_SHADOW_rsa_pkey_meth
+#define RSA_print GRPC_SHADOW_RSA_print
+#define RSA_private_decrypt GRPC_SHADOW_RSA_private_decrypt
+#define RSA_private_encrypt GRPC_SHADOW_RSA_private_encrypt
+#define RSAPrivateKey_dup GRPC_SHADOW_RSAPrivateKey_dup
+#define RSA_private_key_from_bytes GRPC_SHADOW_RSA_private_key_from_bytes
+#define RSA_private_key_to_bytes GRPC_SHADOW_RSA_private_key_to_bytes
+#define RSA_private_transform GRPC_SHADOW_RSA_private_transform
+#define RSA_PSS_PARAMS_free GRPC_SHADOW_RSA_PSS_PARAMS_free
+#define RSA_PSS_PARAMS_it GRPC_SHADOW_RSA_PSS_PARAMS_it
+#define RSA_PSS_PARAMS_new GRPC_SHADOW_RSA_PSS_PARAMS_new
+#define RSA_public_decrypt GRPC_SHADOW_RSA_public_decrypt
+#define RSA_public_encrypt GRPC_SHADOW_RSA_public_encrypt
+#define RSAPublicKey_dup GRPC_SHADOW_RSAPublicKey_dup
+#define RSA_public_key_from_bytes GRPC_SHADOW_RSA_public_key_from_bytes
+#define RSA_public_key_to_bytes GRPC_SHADOW_RSA_public_key_to_bytes
+#define RSA_set0_crt_params GRPC_SHADOW_RSA_set0_crt_params
+#define RSA_set0_factors GRPC_SHADOW_RSA_set0_factors
+#define RSA_set0_key GRPC_SHADOW_RSA_set0_key
+#define RSA_set_ex_data GRPC_SHADOW_RSA_set_ex_data
+#define RSA_sign GRPC_SHADOW_RSA_sign
+#define RSA_sign_pss_mgf1 GRPC_SHADOW_RSA_sign_pss_mgf1
+#define RSA_sign_raw GRPC_SHADOW_RSA_sign_raw
+#define RSA_size GRPC_SHADOW_RSA_size
+#define RSA_up_ref GRPC_SHADOW_RSA_up_ref
+#define RSA_verify GRPC_SHADOW_RSA_verify
+#define RSA_verify_PKCS1_PSS_mgf1 GRPC_SHADOW_RSA_verify_PKCS1_PSS_mgf1
+#define RSA_verify_pss_mgf1 GRPC_SHADOW_RSA_verify_pss_mgf1
+#define RSA_verify_raw GRPC_SHADOW_RSA_verify_raw
+#define rsaz_1024_gather5_avx2 GRPC_SHADOW_rsaz_1024_gather5_avx2
+#define RSAZ_1024_mod_exp_avx2 GRPC_SHADOW_RSAZ_1024_mod_exp_avx2
+#define rsaz_1024_mul_avx2 GRPC_SHADOW_rsaz_1024_mul_avx2
+#define rsaz_1024_norm2red_avx2 GRPC_SHADOW_rsaz_1024_norm2red_avx2
+#define rsaz_1024_red2norm_avx2 GRPC_SHADOW_rsaz_1024_red2norm_avx2
+#define rsaz_1024_scatter5_avx2 GRPC_SHADOW_rsaz_1024_scatter5_avx2
+#define rsaz_1024_sqr_avx2 GRPC_SHADOW_rsaz_1024_sqr_avx2
+#define s2i_ASN1_INTEGER GRPC_SHADOW_s2i_ASN1_INTEGER
+#define s2i_ASN1_OCTET_STRING GRPC_SHADOW_s2i_ASN1_OCTET_STRING
+#define sdallocx GRPC_SHADOW_sdallocx
+#define SHA1 GRPC_SHADOW_SHA1
+#define sha1_block_data_order GRPC_SHADOW_sha1_block_data_order
+#define SHA1_Final GRPC_SHADOW_SHA1_Final
+#define SHA1_Init GRPC_SHADOW_SHA1_Init
+#define SHA1_Transform GRPC_SHADOW_SHA1_Transform
+#define SHA1_Update GRPC_SHADOW_SHA1_Update
+#define SHA224 GRPC_SHADOW_SHA224
+#define SHA224_Final GRPC_SHADOW_SHA224_Final
+#define SHA224_Init GRPC_SHADOW_SHA224_Init
+#define SHA224_Update GRPC_SHADOW_SHA224_Update
+#define SHA256 GRPC_SHADOW_SHA256
+#define sha256_block_data_order GRPC_SHADOW_sha256_block_data_order
+#define SHA256_Final GRPC_SHADOW_SHA256_Final
+#define SHA256_Init GRPC_SHADOW_SHA256_Init
+#define SHA256_Transform GRPC_SHADOW_SHA256_Transform
+#define SHA256_TransformBlocks GRPC_SHADOW_SHA256_TransformBlocks
+#define SHA256_Update GRPC_SHADOW_SHA256_Update
+#define SHA384 GRPC_SHADOW_SHA384
+#define SHA384_Final GRPC_SHADOW_SHA384_Final
+#define SHA384_Init GRPC_SHADOW_SHA384_Init
+#define SHA384_Update GRPC_SHADOW_SHA384_Update
+#define SHA512 GRPC_SHADOW_SHA512
+#define sha512_block_data_order GRPC_SHADOW_sha512_block_data_order
+#define SHA512_Final GRPC_SHADOW_SHA512_Final
+#define SHA512_Init GRPC_SHADOW_SHA512_Init
+#define SHA512_Transform GRPC_SHADOW_SHA512_Transform
+#define SHA512_Update GRPC_SHADOW_SHA512_Update
+#define SIPHASH_24 GRPC_SHADOW_SIPHASH_24
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_copy_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_copy_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_call_free_func GRPC_SHADOW_sk_CRYPTO_BUFFER_call_free_func
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_deep_copy GRPC_SHADOW_sk_CRYPTO_BUFFER_deep_copy
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_new_null GRPC_SHADOW_sk_CRYPTO_BUFFER_new_null
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_num GRPC_SHADOW_sk_CRYPTO_BUFFER_num
+#define sk_CRYPTO_BUFFER_push GRPC_SHADOW_sk_CRYPTO_BUFFER_push
+#define sk_CRYPTO_BUFFER_set GRPC_SHADOW_sk_CRYPTO_BUFFER_set
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_CRYPTO_BUFFER_value GRPC_SHADOW_sk_CRYPTO_BUFFER_value
+#define sk_deep_copy GRPC_SHADOW_sk_deep_copy
+#define sk_delete GRPC_SHADOW_sk_delete
+#define sk_delete_ptr GRPC_SHADOW_sk_delete_ptr
+#define sk_dup GRPC_SHADOW_sk_dup
+#define sk_find GRPC_SHADOW_sk_find
+#define sk_free GRPC_SHADOW_sk_free
+#define sk_insert GRPC_SHADOW_sk_insert
+#define sk_is_sorted GRPC_SHADOW_sk_is_sorted
+#define sk_new GRPC_SHADOW_sk_new
+#define sk_new_null GRPC_SHADOW_sk_new_null
+#define sk_num GRPC_SHADOW_sk_num
+#define sk_pop GRPC_SHADOW_sk_pop
+#define sk_pop_free GRPC_SHADOW_sk_pop_free
+#define sk_pop_free_ex GRPC_SHADOW_sk_pop_free_ex
+#define sk_push GRPC_SHADOW_sk_push
+#define sk_set GRPC_SHADOW_sk_set
+#define sk_set_cmp_func GRPC_SHADOW_sk_set_cmp_func
+#define sk_shift GRPC_SHADOW_sk_shift
+#define sk_sort GRPC_SHADOW_sk_sort
+#define sk_SRTP_PROTECTION_PROFILE_new_null GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_new_null
+#define sk_SRTP_PROTECTION_PROFILE_num GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_num
+#define sk_SRTP_PROTECTION_PROFILE_push GRPC_SHADOW_sk_SRTP_PROTECTION_PROFILE_push
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_call_cmp_func GRPC_SHADOW_sk_SSL_CIPHER_call_cmp_func
+#define sk_SSL_CIPHER_delete GRPC_SHADOW_sk_SSL_CIPHER_delete
+#define sk_SSL_CIPHER_dup GRPC_SHADOW_sk_SSL_CIPHER_dup
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_find GRPC_SHADOW_sk_SSL_CIPHER_find
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_new_null GRPC_SHADOW_sk_SSL_CIPHER_new_null
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_num GRPC_SHADOW_sk_SSL_CIPHER_num
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_push GRPC_SHADOW_sk_SSL_CIPHER_push
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_SSL_CIPHER_value GRPC_SHADOW_sk_SSL_CIPHER_value
+#define sk_value GRPC_SHADOW_sk_value
+#define sk_X509_call_free_func GRPC_SHADOW_sk_X509_call_free_func
+#define sk_X509_NAME_call_cmp_func GRPC_SHADOW_sk_X509_NAME_call_cmp_func
+#define sk_X509_NAME_call_copy_func GRPC_SHADOW_sk_X509_NAME_call_copy_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_call_free_func GRPC_SHADOW_sk_X509_NAME_call_free_func
+#define sk_X509_NAME_deep_copy GRPC_SHADOW_sk_X509_NAME_deep_copy
+#define sk_X509_NAME_find GRPC_SHADOW_sk_X509_NAME_find
+#define sk_X509_NAME_free GRPC_SHADOW_sk_X509_NAME_free
+#define sk_X509_NAME_new GRPC_SHADOW_sk_X509_NAME_new
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_new_null GRPC_SHADOW_sk_X509_NAME_new_null
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_pop_free GRPC_SHADOW_sk_X509_NAME_pop_free
+#define sk_X509_NAME_push GRPC_SHADOW_sk_X509_NAME_push
+#define sk_X509_NAME_set_cmp_func GRPC_SHADOW_sk_X509_NAME_set_cmp_func
+#define sk_X509_NAME_sort GRPC_SHADOW_sk_X509_NAME_sort
+#define sk_X509_new_null GRPC_SHADOW_sk_X509_new_null
+#define sk_X509_num GRPC_SHADOW_sk_X509_num
+#define sk_X509_pop_free GRPC_SHADOW_sk_X509_pop_free
+#define sk_X509_shift GRPC_SHADOW_sk_X509_shift
+#define sk_X509_value GRPC_SHADOW_sk_X509_value
+#define sk_zero GRPC_SHADOW_sk_zero
+#define SPAKE2_CTX_free GRPC_SHADOW_SPAKE2_CTX_free
+#define SPAKE2_CTX_new GRPC_SHADOW_SPAKE2_CTX_new
+#define SPAKE2_generate_msg GRPC_SHADOW_SPAKE2_generate_msg
+#define SPAKE2_process_msg GRPC_SHADOW_SPAKE2_process_msg
+#define SSL_accept GRPC_SHADOW_SSL_accept
+#define SSL_add0_chain_cert GRPC_SHADOW_SSL_add0_chain_cert
+#define SSL_add1_chain_cert GRPC_SHADOW_SSL_add1_chain_cert
+#define SSL_add_client_CA GRPC_SHADOW_SSL_add_client_CA
+#define SSL_add_file_cert_subjects_to_stack GRPC_SHADOW_SSL_add_file_cert_subjects_to_stack
+#define SSL_alert_desc_string GRPC_SHADOW_SSL_alert_desc_string
+#define SSL_alert_desc_string_long GRPC_SHADOW_SSL_alert_desc_string_long
+#define SSL_alert_from_verify_result GRPC_SHADOW_SSL_alert_from_verify_result
+#define SSL_alert_type_string GRPC_SHADOW_SSL_alert_type_string
+#define SSL_alert_type_string_long GRPC_SHADOW_SSL_alert_type_string_long
+#define SSL_cache_hit GRPC_SHADOW_SSL_cache_hit
+#define SSL_certs_clear GRPC_SHADOW_SSL_certs_clear
+#define SSL_check_private_key GRPC_SHADOW_SSL_check_private_key
+#define SSL_CIPHER_description GRPC_SHADOW_SSL_CIPHER_description
+#define SSL_CIPHER_get_auth_nid GRPC_SHADOW_SSL_CIPHER_get_auth_nid
+#define SSL_CIPHER_get_bits GRPC_SHADOW_SSL_CIPHER_get_bits
+#define SSL_CIPHER_get_cipher_nid GRPC_SHADOW_SSL_CIPHER_get_cipher_nid
+#define SSL_CIPHER_get_digest_nid GRPC_SHADOW_SSL_CIPHER_get_digest_nid
+#define SSL_CIPHER_get_id GRPC_SHADOW_SSL_CIPHER_get_id
+#define SSL_CIPHER_get_kx_name GRPC_SHADOW_SSL_CIPHER_get_kx_name
+#define SSL_CIPHER_get_kx_nid GRPC_SHADOW_SSL_CIPHER_get_kx_nid
+#define SSL_CIPHER_get_max_version GRPC_SHADOW_SSL_CIPHER_get_max_version
+#define SSL_CIPHER_get_min_version GRPC_SHADOW_SSL_CIPHER_get_min_version
+#define SSL_CIPHER_get_name GRPC_SHADOW_SSL_CIPHER_get_name
+#define SSL_CIPHER_get_prf_nid GRPC_SHADOW_SSL_CIPHER_get_prf_nid
+#define SSL_CIPHER_get_rfc_name GRPC_SHADOW_SSL_CIPHER_get_rfc_name
+#define SSL_CIPHER_get_value GRPC_SHADOW_SSL_CIPHER_get_value
+#define SSL_CIPHER_get_version GRPC_SHADOW_SSL_CIPHER_get_version
+#define SSL_CIPHER_is_aead GRPC_SHADOW_SSL_CIPHER_is_aead
+#define SSL_CIPHER_is_block_cipher GRPC_SHADOW_SSL_CIPHER_is_block_cipher
+#define SSL_CIPHER_standard_name GRPC_SHADOW_SSL_CIPHER_standard_name
+#define SSL_clear GRPC_SHADOW_SSL_clear
+#define SSL_clear_chain_certs GRPC_SHADOW_SSL_clear_chain_certs
+#define SSL_clear_mode GRPC_SHADOW_SSL_clear_mode
+#define SSL_clear_options GRPC_SHADOW_SSL_clear_options
+#define SSL_COMP_add_compression_method GRPC_SHADOW_SSL_COMP_add_compression_method
+#define SSL_COMP_free_compression_methods GRPC_SHADOW_SSL_COMP_free_compression_methods
+#define SSL_COMP_get0_name GRPC_SHADOW_SSL_COMP_get0_name
+#define SSL_COMP_get_compression_methods GRPC_SHADOW_SSL_COMP_get_compression_methods
+#define SSL_COMP_get_id GRPC_SHADOW_SSL_COMP_get_id
+#define SSL_COMP_get_name GRPC_SHADOW_SSL_COMP_get_name
+#define SSL_connect GRPC_SHADOW_SSL_connect
+#define SSL_CTX_add0_chain_cert GRPC_SHADOW_SSL_CTX_add0_chain_cert
+#define SSL_CTX_add1_chain_cert GRPC_SHADOW_SSL_CTX_add1_chain_cert
+#define SSL_CTX_add_cert_compression_alg GRPC_SHADOW_SSL_CTX_add_cert_compression_alg
+#define SSL_CTX_add_client_CA GRPC_SHADOW_SSL_CTX_add_client_CA
+#define SSL_CTX_add_extra_chain_cert GRPC_SHADOW_SSL_CTX_add_extra_chain_cert
+#define SSL_CTX_add_session GRPC_SHADOW_SSL_CTX_add_session
+#define SSL_CTX_check_private_key GRPC_SHADOW_SSL_CTX_check_private_key
+#define SSL_CTX_cipher_in_group GRPC_SHADOW_SSL_CTX_cipher_in_group
+#define SSL_CTX_clear_chain_certs GRPC_SHADOW_SSL_CTX_clear_chain_certs
+#define SSL_CTX_clear_extra_chain_certs GRPC_SHADOW_SSL_CTX_clear_extra_chain_certs
+#define SSL_CTX_clear_mode GRPC_SHADOW_SSL_CTX_clear_mode
+#define SSL_CTX_clear_options GRPC_SHADOW_SSL_CTX_clear_options
+#define SSL_CTX_enable_ocsp_stapling GRPC_SHADOW_SSL_CTX_enable_ocsp_stapling
+#define SSL_CTX_enable_signed_cert_timestamps GRPC_SHADOW_SSL_CTX_enable_signed_cert_timestamps
+#define SSL_CTX_enable_tls_channel_id GRPC_SHADOW_SSL_CTX_enable_tls_channel_id
+#define SSL_CTX_flush_sessions GRPC_SHADOW_SSL_CTX_flush_sessions
+#define SSL_CTX_free GRPC_SHADOW_SSL_CTX_free
+#define SSL_CTX_get0_certificate GRPC_SHADOW_SSL_CTX_get0_certificate
+#define SSL_CTX_get0_chain_certs GRPC_SHADOW_SSL_CTX_get0_chain_certs
+#define SSL_CTX_get0_param GRPC_SHADOW_SSL_CTX_get0_param
+#define SSL_CTX_get0_privatekey GRPC_SHADOW_SSL_CTX_get0_privatekey
+#define SSL_CTX_get_cert_store GRPC_SHADOW_SSL_CTX_get_cert_store
+#define SSL_CTX_get_channel_id_cb GRPC_SHADOW_SSL_CTX_get_channel_id_cb
+#define SSL_CTX_get_ciphers GRPC_SHADOW_SSL_CTX_get_ciphers
+#define SSL_CTX_get_client_CA_list GRPC_SHADOW_SSL_CTX_get_client_CA_list
+#define SSL_CTX_get_default_passwd_cb GRPC_SHADOW_SSL_CTX_get_default_passwd_cb
+#define SSL_CTX_get_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_get_default_passwd_cb_userdata
+#define SSL_CTX_get_ex_data GRPC_SHADOW_SSL_CTX_get_ex_data
+#define SSL_CTX_get_ex_new_index GRPC_SHADOW_SSL_CTX_get_ex_new_index
+#define SSL_CTX_get_extra_chain_certs GRPC_SHADOW_SSL_CTX_get_extra_chain_certs
+#define SSL_CTX_get_info_callback GRPC_SHADOW_SSL_CTX_get_info_callback
+#define SSL_CTX_get_keylog_callback GRPC_SHADOW_SSL_CTX_get_keylog_callback
+#define SSL_CTX_get_max_cert_list GRPC_SHADOW_SSL_CTX_get_max_cert_list
+#define SSL_CTX_get_max_proto_version GRPC_SHADOW_SSL_CTX_get_max_proto_version
+#define SSL_CTX_get_min_proto_version GRPC_SHADOW_SSL_CTX_get_min_proto_version
+#define SSL_CTX_get_mode GRPC_SHADOW_SSL_CTX_get_mode
+#define SSL_CTX_get_options GRPC_SHADOW_SSL_CTX_get_options
+#define SSL_CTX_get_quiet_shutdown GRPC_SHADOW_SSL_CTX_get_quiet_shutdown
+#define SSL_CTX_get_read_ahead GRPC_SHADOW_SSL_CTX_get_read_ahead
+#define SSL_CTX_get_session_cache_mode GRPC_SHADOW_SSL_CTX_get_session_cache_mode
+#define SSL_CTX_get_timeout GRPC_SHADOW_SSL_CTX_get_timeout
+#define SSL_CTX_get_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_get_tlsext_ticket_keys
+#define SSL_CTX_get_verify_callback GRPC_SHADOW_SSL_CTX_get_verify_callback
+#define SSL_CTX_get_verify_depth GRPC_SHADOW_SSL_CTX_get_verify_depth
+#define SSL_CTX_get_verify_mode GRPC_SHADOW_SSL_CTX_get_verify_mode
+#define SSL_CTX_load_verify_locations GRPC_SHADOW_SSL_CTX_load_verify_locations
+#define SSL_CTX_need_tmp_RSA GRPC_SHADOW_SSL_CTX_need_tmp_RSA
+#define SSL_CTX_new GRPC_SHADOW_SSL_CTX_new
+#define SSL_CTX_remove_session GRPC_SHADOW_SSL_CTX_remove_session
+#define SSL_CTX_sess_accept GRPC_SHADOW_SSL_CTX_sess_accept
+#define SSL_CTX_sess_accept_good GRPC_SHADOW_SSL_CTX_sess_accept_good
+#define SSL_CTX_sess_accept_renegotiate GRPC_SHADOW_SSL_CTX_sess_accept_renegotiate
+#define SSL_CTX_sess_cache_full GRPC_SHADOW_SSL_CTX_sess_cache_full
+#define SSL_CTX_sess_cb_hits GRPC_SHADOW_SSL_CTX_sess_cb_hits
+#define SSL_CTX_sess_connect GRPC_SHADOW_SSL_CTX_sess_connect
+#define SSL_CTX_sess_connect_good GRPC_SHADOW_SSL_CTX_sess_connect_good
+#define SSL_CTX_sess_connect_renegotiate GRPC_SHADOW_SSL_CTX_sess_connect_renegotiate
+#define SSL_CTX_sess_get_cache_size GRPC_SHADOW_SSL_CTX_sess_get_cache_size
+#define SSL_CTX_sess_get_get_cb GRPC_SHADOW_SSL_CTX_sess_get_get_cb
+#define SSL_CTX_sess_get_new_cb GRPC_SHADOW_SSL_CTX_sess_get_new_cb
+#define SSL_CTX_sess_get_remove_cb GRPC_SHADOW_SSL_CTX_sess_get_remove_cb
+#define SSL_CTX_sess_hits GRPC_SHADOW_SSL_CTX_sess_hits
+#define SSL_CTX_sess_misses GRPC_SHADOW_SSL_CTX_sess_misses
+#define SSL_CTX_sess_number GRPC_SHADOW_SSL_CTX_sess_number
+#define SSL_CTX_sess_set_cache_size GRPC_SHADOW_SSL_CTX_sess_set_cache_size
+#define SSL_CTX_sess_set_get_cb GRPC_SHADOW_SSL_CTX_sess_set_get_cb
+#define SSL_CTX_sess_set_new_cb GRPC_SHADOW_SSL_CTX_sess_set_new_cb
+#define SSL_CTX_sess_set_remove_cb GRPC_SHADOW_SSL_CTX_sess_set_remove_cb
+#define SSL_CTX_sess_timeouts GRPC_SHADOW_SSL_CTX_sess_timeouts
+#define SSL_CTX_set0_buffer_pool GRPC_SHADOW_SSL_CTX_set0_buffer_pool
+#define SSL_CTX_set0_chain GRPC_SHADOW_SSL_CTX_set0_chain
+#define SSL_CTX_set0_client_CAs GRPC_SHADOW_SSL_CTX_set0_client_CAs
+#define SSL_CTX_set0_verify_cert_store GRPC_SHADOW_SSL_CTX_set0_verify_cert_store
+#define SSL_CTX_set1_chain GRPC_SHADOW_SSL_CTX_set1_chain
+#define SSL_CTX_set1_curves GRPC_SHADOW_SSL_CTX_set1_curves
+#define SSL_CTX_set1_curves_list GRPC_SHADOW_SSL_CTX_set1_curves_list
+#define SSL_CTX_set1_param GRPC_SHADOW_SSL_CTX_set1_param
+#define SSL_CTX_set1_sigalgs GRPC_SHADOW_SSL_CTX_set1_sigalgs
+#define SSL_CTX_set1_sigalgs_list GRPC_SHADOW_SSL_CTX_set1_sigalgs_list
+#define SSL_CTX_set1_tls_channel_id GRPC_SHADOW_SSL_CTX_set1_tls_channel_id
+#define SSL_CTX_set1_verify_cert_store GRPC_SHADOW_SSL_CTX_set1_verify_cert_store
+#define SSL_CTX_set_allow_unknown_alpn_protos GRPC_SHADOW_SSL_CTX_set_allow_unknown_alpn_protos
+#define SSL_CTX_set_alpn_protos GRPC_SHADOW_SSL_CTX_set_alpn_protos
+#define SSL_CTX_set_alpn_select_cb GRPC_SHADOW_SSL_CTX_set_alpn_select_cb
+#define SSL_CTX_set_cert_cb GRPC_SHADOW_SSL_CTX_set_cert_cb
+#define SSL_CTX_set_cert_store GRPC_SHADOW_SSL_CTX_set_cert_store
+#define SSL_CTX_set_cert_verify_callback GRPC_SHADOW_SSL_CTX_set_cert_verify_callback
+#define SSL_CTX_set_chain_and_key GRPC_SHADOW_SSL_CTX_set_chain_and_key
+#define SSL_CTX_set_channel_id_cb GRPC_SHADOW_SSL_CTX_set_channel_id_cb
+#define SSL_CTX_set_cipher_list GRPC_SHADOW_SSL_CTX_set_cipher_list
+#define SSL_CTX_set_client_CA_list GRPC_SHADOW_SSL_CTX_set_client_CA_list
+#define SSL_CTX_set_client_cert_cb GRPC_SHADOW_SSL_CTX_set_client_cert_cb
+#define SSL_CTX_set_current_time_cb GRPC_SHADOW_SSL_CTX_set_current_time_cb
+#define SSL_CTX_set_custom_verify GRPC_SHADOW_SSL_CTX_set_custom_verify
+#define SSL_CTX_set_default_passwd_cb GRPC_SHADOW_SSL_CTX_set_default_passwd_cb
+#define SSL_CTX_set_default_passwd_cb_userdata GRPC_SHADOW_SSL_CTX_set_default_passwd_cb_userdata
+#define SSL_CTX_set_default_verify_paths GRPC_SHADOW_SSL_CTX_set_default_verify_paths
+#define SSL_CTX_set_dos_protection_cb GRPC_SHADOW_SSL_CTX_set_dos_protection_cb
+#define SSL_CTX_set_early_data_enabled GRPC_SHADOW_SSL_CTX_set_early_data_enabled
+#define SSL_CTX_set_ed25519_enabled GRPC_SHADOW_SSL_CTX_set_ed25519_enabled
+#define SSL_CTX_set_ex_data GRPC_SHADOW_SSL_CTX_set_ex_data
+#define SSL_CTX_set_false_start_allowed_without_alpn GRPC_SHADOW_SSL_CTX_set_false_start_allowed_without_alpn
+#define SSL_CTX_set_grease_enabled GRPC_SHADOW_SSL_CTX_set_grease_enabled
+#define SSL_CTX_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_CTX_set_ignore_tls13_downgrade
+#define SSL_CTX_set_info_callback GRPC_SHADOW_SSL_CTX_set_info_callback
+#define SSL_CTX_set_keylog_callback GRPC_SHADOW_SSL_CTX_set_keylog_callback
+#define SSL_CTX_set_max_cert_list GRPC_SHADOW_SSL_CTX_set_max_cert_list
+#define SSL_CTX_set_max_proto_version GRPC_SHADOW_SSL_CTX_set_max_proto_version
+#define SSL_CTX_set_max_send_fragment GRPC_SHADOW_SSL_CTX_set_max_send_fragment
+#define SSL_CTX_set_min_proto_version GRPC_SHADOW_SSL_CTX_set_min_proto_version
+#define SSL_CTX_set_mode GRPC_SHADOW_SSL_CTX_set_mode
+#define SSL_CTX_set_msg_callback GRPC_SHADOW_SSL_CTX_set_msg_callback
+#define SSL_CTX_set_msg_callback_arg GRPC_SHADOW_SSL_CTX_set_msg_callback_arg
+#define SSL_CTX_set_next_protos_advertised_cb GRPC_SHADOW_SSL_CTX_set_next_protos_advertised_cb
+#define SSL_CTX_set_next_proto_select_cb GRPC_SHADOW_SSL_CTX_set_next_proto_select_cb
+#define SSL_CTX_set_ocsp_response GRPC_SHADOW_SSL_CTX_set_ocsp_response
+#define SSL_CTX_set_options GRPC_SHADOW_SSL_CTX_set_options
+#define SSL_CTX_set_private_key_method GRPC_SHADOW_SSL_CTX_set_private_key_method
+#define SSL_CTX_set_psk_client_callback GRPC_SHADOW_SSL_CTX_set_psk_client_callback
+#define SSL_CTX_set_psk_server_callback GRPC_SHADOW_SSL_CTX_set_psk_server_callback
+#define SSL_CTX_set_purpose GRPC_SHADOW_SSL_CTX_set_purpose
+#define SSL_CTX_set_quic_method GRPC_SHADOW_SSL_CTX_set_quic_method
+#define SSL_CTX_set_quiet_shutdown GRPC_SHADOW_SSL_CTX_set_quiet_shutdown
+#define SSL_CTX_set_read_ahead GRPC_SHADOW_SSL_CTX_set_read_ahead
+#define SSL_CTX_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_CTX_set_retain_only_sha256_of_client_certs
+#define SSL_CTX_set_reverify_on_resume GRPC_SHADOW_SSL_CTX_set_reverify_on_resume
+#define SSL_CTX_set_select_certificate_cb GRPC_SHADOW_SSL_CTX_set_select_certificate_cb
+#define SSL_CTX_set_session_cache_mode GRPC_SHADOW_SSL_CTX_set_session_cache_mode
+#define SSL_CTX_set_session_id_context GRPC_SHADOW_SSL_CTX_set_session_id_context
+#define SSL_CTX_set_session_psk_dhe_timeout GRPC_SHADOW_SSL_CTX_set_session_psk_dhe_timeout
+#define SSL_CTX_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_CTX_set_signed_cert_timestamp_list
+#define SSL_CTX_set_signing_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_signing_algorithm_prefs
+#define SSL_CTX_set_srtp_profiles GRPC_SHADOW_SSL_CTX_set_srtp_profiles
+#define SSL_CTX_set_strict_cipher_list GRPC_SHADOW_SSL_CTX_set_strict_cipher_list
+#define SSL_CTX_set_ticket_aead_method GRPC_SHADOW_SSL_CTX_set_ticket_aead_method
+#define SSL_CTX_set_timeout GRPC_SHADOW_SSL_CTX_set_timeout
+#define SSL_CTX_set_tls_channel_id_enabled GRPC_SHADOW_SSL_CTX_set_tls_channel_id_enabled
+#define SSL_CTX_set_tlsext_servername_arg GRPC_SHADOW_SSL_CTX_set_tlsext_servername_arg
+#define SSL_CTX_set_tlsext_servername_callback GRPC_SHADOW_SSL_CTX_set_tlsext_servername_callback
+#define SSL_CTX_set_tlsext_status_arg GRPC_SHADOW_SSL_CTX_set_tlsext_status_arg
+#define SSL_CTX_set_tlsext_status_cb GRPC_SHADOW_SSL_CTX_set_tlsext_status_cb
+#define SSL_CTX_set_tlsext_ticket_key_cb GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_key_cb
+#define SSL_CTX_set_tlsext_ticket_keys GRPC_SHADOW_SSL_CTX_set_tlsext_ticket_keys
+#define SSL_CTX_set_tlsext_use_srtp GRPC_SHADOW_SSL_CTX_set_tlsext_use_srtp
+#define SSL_CTX_set_tmp_dh GRPC_SHADOW_SSL_CTX_set_tmp_dh
+#define SSL_CTX_set_tmp_dh_callback GRPC_SHADOW_SSL_CTX_set_tmp_dh_callback
+#define SSL_CTX_set_tmp_ecdh GRPC_SHADOW_SSL_CTX_set_tmp_ecdh
+#define SSL_CTX_set_tmp_rsa GRPC_SHADOW_SSL_CTX_set_tmp_rsa
+#define SSL_CTX_set_tmp_rsa_callback GRPC_SHADOW_SSL_CTX_set_tmp_rsa_callback
+#define SSL_CTX_set_trust GRPC_SHADOW_SSL_CTX_set_trust
+#define SSL_CTX_set_verify GRPC_SHADOW_SSL_CTX_set_verify
+#define SSL_CTX_set_verify_algorithm_prefs GRPC_SHADOW_SSL_CTX_set_verify_algorithm_prefs
+#define SSL_CTX_set_verify_depth GRPC_SHADOW_SSL_CTX_set_verify_depth
+#define SSL_CTX_up_ref GRPC_SHADOW_SSL_CTX_up_ref
+#define SSL_CTX_use_certificate GRPC_SHADOW_SSL_CTX_use_certificate
+#define SSL_CTX_use_certificate_ASN1 GRPC_SHADOW_SSL_CTX_use_certificate_ASN1
+#define SSL_CTX_use_certificate_chain_file GRPC_SHADOW_SSL_CTX_use_certificate_chain_file
+#define SSL_CTX_use_certificate_file GRPC_SHADOW_SSL_CTX_use_certificate_file
+#define SSL_CTX_use_PrivateKey GRPC_SHADOW_SSL_CTX_use_PrivateKey
+#define SSL_CTX_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_PrivateKey_ASN1
+#define SSL_CTX_use_PrivateKey_file GRPC_SHADOW_SSL_CTX_use_PrivateKey_file
+#define SSL_CTX_use_psk_identity_hint GRPC_SHADOW_SSL_CTX_use_psk_identity_hint
+#define SSL_CTX_use_RSAPrivateKey GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey
+#define SSL_CTX_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_ASN1
+#define SSL_CTX_use_RSAPrivateKey_file GRPC_SHADOW_SSL_CTX_use_RSAPrivateKey_file
+#define SSL_cutthrough_complete GRPC_SHADOW_SSL_cutthrough_complete
+#define SSL_delegated_credential_used GRPC_SHADOW_SSL_delegated_credential_used
+#define SSL_do_handshake GRPC_SHADOW_SSL_do_handshake
+#define SSL_dup_CA_list GRPC_SHADOW_SSL_dup_CA_list
+#define SSL_early_callback_ctx_extension_get GRPC_SHADOW_SSL_early_callback_ctx_extension_get
+#define SSL_early_data_accepted GRPC_SHADOW_SSL_early_data_accepted
+#define SSLeay GRPC_SHADOW_SSLeay
+#define SSLeay_version GRPC_SHADOW_SSLeay_version
+#define SSL_enable_ocsp_stapling GRPC_SHADOW_SSL_enable_ocsp_stapling
+#define SSL_enable_signed_cert_timestamps GRPC_SHADOW_SSL_enable_signed_cert_timestamps
+#define SSL_enable_tls_channel_id GRPC_SHADOW_SSL_enable_tls_channel_id
+#define SSL_error_description GRPC_SHADOW_SSL_error_description
+#define SSL_export_keying_material GRPC_SHADOW_SSL_export_keying_material
+#define SSL_free GRPC_SHADOW_SSL_free
+#define SSL_generate_key_block GRPC_SHADOW_SSL_generate_key_block
+#define SSL_get0_alpn_selected GRPC_SHADOW_SSL_get0_alpn_selected
+#define SSL_get0_certificate_types GRPC_SHADOW_SSL_get0_certificate_types
+#define SSL_get0_chain_certs GRPC_SHADOW_SSL_get0_chain_certs
+#define SSL_get0_next_proto_negotiated GRPC_SHADOW_SSL_get0_next_proto_negotiated
+#define SSL_get0_ocsp_response GRPC_SHADOW_SSL_get0_ocsp_response
+#define SSL_get0_param GRPC_SHADOW_SSL_get0_param
+#define SSL_get0_peer_certificates GRPC_SHADOW_SSL_get0_peer_certificates
+#define SSL_get0_peer_verify_algorithms GRPC_SHADOW_SSL_get0_peer_verify_algorithms
+#define SSL_get0_server_requested_CAs GRPC_SHADOW_SSL_get0_server_requested_CAs
+#define SSL_get0_session_id_context GRPC_SHADOW_SSL_get0_session_id_context
+#define SSL_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_get0_signed_cert_timestamp_list
+#define SSL_get1_session GRPC_SHADOW_SSL_get1_session
+#define SSL_get_certificate GRPC_SHADOW_SSL_get_certificate
+#define SSL_get_cipher_by_value GRPC_SHADOW_SSL_get_cipher_by_value
+#define SSL_get_cipher_list GRPC_SHADOW_SSL_get_cipher_list
+#define SSL_get_ciphers GRPC_SHADOW_SSL_get_ciphers
+#define SSL_get_client_CA_list GRPC_SHADOW_SSL_get_client_CA_list
+#define SSL_get_client_random GRPC_SHADOW_SSL_get_client_random
+#define SSL_get_current_cipher GRPC_SHADOW_SSL_get_current_cipher
+#define SSL_get_current_compression GRPC_SHADOW_SSL_get_current_compression
+#define SSL_get_current_expansion GRPC_SHADOW_SSL_get_current_expansion
+#define SSL_get_curve_id GRPC_SHADOW_SSL_get_curve_id
+#define SSL_get_curve_name GRPC_SHADOW_SSL_get_curve_name
+#define SSL_get_default_timeout GRPC_SHADOW_SSL_get_default_timeout
+#define SSL_get_early_data_reason GRPC_SHADOW_SSL_get_early_data_reason
+#define SSL_get_error GRPC_SHADOW_SSL_get_error
+#define SSL_get_ex_data GRPC_SHADOW_SSL_get_ex_data
+#define SSL_get_ex_data_X509_STORE_CTX_idx GRPC_SHADOW_SSL_get_ex_data_X509_STORE_CTX_idx
+#define SSL_get_ex_new_index GRPC_SHADOW_SSL_get_ex_new_index
+#define SSL_get_extms_support GRPC_SHADOW_SSL_get_extms_support
+#define SSL_get_fd GRPC_SHADOW_SSL_get_fd
+#define SSL_get_finished GRPC_SHADOW_SSL_get_finished
+#define SSL_get_info_callback GRPC_SHADOW_SSL_get_info_callback
+#define SSL_get_ivs GRPC_SHADOW_SSL_get_ivs
+#define SSL_get_key_block_len GRPC_SHADOW_SSL_get_key_block_len
+#define SSL_get_max_cert_list GRPC_SHADOW_SSL_get_max_cert_list
+#define SSL_get_max_proto_version GRPC_SHADOW_SSL_get_max_proto_version
+#define SSL_get_min_proto_version GRPC_SHADOW_SSL_get_min_proto_version
+#define SSL_get_mode GRPC_SHADOW_SSL_get_mode
+#define SSL_get_negotiated_token_binding_param GRPC_SHADOW_SSL_get_negotiated_token_binding_param
+#define SSL_get_options GRPC_SHADOW_SSL_get_options
+#define SSL_get_peer_cert_chain GRPC_SHADOW_SSL_get_peer_cert_chain
+#define SSL_get_peer_certificate GRPC_SHADOW_SSL_get_peer_certificate
+#define SSL_get_peer_finished GRPC_SHADOW_SSL_get_peer_finished
+#define SSL_get_peer_full_cert_chain GRPC_SHADOW_SSL_get_peer_full_cert_chain
+#define SSL_get_peer_quic_transport_params GRPC_SHADOW_SSL_get_peer_quic_transport_params
+#define SSL_get_peer_signature_algorithm GRPC_SHADOW_SSL_get_peer_signature_algorithm
+#define SSL_get_pending_cipher GRPC_SHADOW_SSL_get_pending_cipher
+#define SSL_get_privatekey GRPC_SHADOW_SSL_get_privatekey
+#define SSL_get_psk_identity GRPC_SHADOW_SSL_get_psk_identity
+#define SSL_get_psk_identity_hint GRPC_SHADOW_SSL_get_psk_identity_hint
+#define SSL_get_quiet_shutdown GRPC_SHADOW_SSL_get_quiet_shutdown
+#define SSL_get_rbio GRPC_SHADOW_SSL_get_rbio
+#define SSL_get_read_ahead GRPC_SHADOW_SSL_get_read_ahead
+#define SSL_get_read_sequence GRPC_SHADOW_SSL_get_read_sequence
+#define SSL_get_rfd GRPC_SHADOW_SSL_get_rfd
+#define SSL_get_secure_renegotiation_support GRPC_SHADOW_SSL_get_secure_renegotiation_support
+#define SSL_get_selected_srtp_profile GRPC_SHADOW_SSL_get_selected_srtp_profile
+#define SSL_get_servername GRPC_SHADOW_SSL_get_servername
+#define SSL_get_servername_type GRPC_SHADOW_SSL_get_servername_type
+#define SSL_get_server_random GRPC_SHADOW_SSL_get_server_random
+#define SSL_get_server_tmp_key GRPC_SHADOW_SSL_get_server_tmp_key
+#define SSL_get_session GRPC_SHADOW_SSL_get_session
+#define SSL_get_shared_ciphers GRPC_SHADOW_SSL_get_shared_ciphers
+#define SSL_get_shared_sigalgs GRPC_SHADOW_SSL_get_shared_sigalgs
+#define SSL_get_shutdown GRPC_SHADOW_SSL_get_shutdown
+#define SSL_get_signature_algorithm_digest GRPC_SHADOW_SSL_get_signature_algorithm_digest
+#define SSL_get_signature_algorithm_key_type GRPC_SHADOW_SSL_get_signature_algorithm_key_type
+#define SSL_get_signature_algorithm_name GRPC_SHADOW_SSL_get_signature_algorithm_name
+#define SSL_get_srtp_profiles GRPC_SHADOW_SSL_get_srtp_profiles
+#define SSL_get_SSL_CTX GRPC_SHADOW_SSL_get_SSL_CTX
+#define SSL_get_ticket_age_skew GRPC_SHADOW_SSL_get_ticket_age_skew
+#define SSL_get_tls_channel_id GRPC_SHADOW_SSL_get_tls_channel_id
+#define SSL_get_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_get_tlsext_status_ocsp_resp
+#define SSL_get_tlsext_status_type GRPC_SHADOW_SSL_get_tlsext_status_type
+#define SSL_get_tls_unique GRPC_SHADOW_SSL_get_tls_unique
+#define SSL_get_verify_callback GRPC_SHADOW_SSL_get_verify_callback
+#define SSL_get_verify_depth GRPC_SHADOW_SSL_get_verify_depth
+#define SSL_get_verify_mode GRPC_SHADOW_SSL_get_verify_mode
+#define SSL_get_verify_result GRPC_SHADOW_SSL_get_verify_result
+#define SSL_get_version GRPC_SHADOW_SSL_get_version
+#define SSL_get_wbio GRPC_SHADOW_SSL_get_wbio
+#define SSL_get_wfd GRPC_SHADOW_SSL_get_wfd
+#define SSL_get_write_sequence GRPC_SHADOW_SSL_get_write_sequence
+#define SSL_in_early_data GRPC_SHADOW_SSL_in_early_data
+#define SSL_in_false_start GRPC_SHADOW_SSL_in_false_start
+#define SSL_in_init GRPC_SHADOW_SSL_in_init
+#define SSL_is_dtls GRPC_SHADOW_SSL_is_dtls
+#define SSL_is_init_finished GRPC_SHADOW_SSL_is_init_finished
+#define SSL_is_server GRPC_SHADOW_SSL_is_server
+#define SSL_is_signature_algorithm_rsa_pss GRPC_SHADOW_SSL_is_signature_algorithm_rsa_pss
+#define SSL_is_tls13_downgrade GRPC_SHADOW_SSL_is_tls13_downgrade
+#define SSL_is_token_binding_negotiated GRPC_SHADOW_SSL_is_token_binding_negotiated
+#define SSL_key_update GRPC_SHADOW_SSL_key_update
+#define SSL_library_init GRPC_SHADOW_SSL_library_init
+#define SSL_load_client_CA_file GRPC_SHADOW_SSL_load_client_CA_file
+#define SSL_load_error_strings GRPC_SHADOW_SSL_load_error_strings
+#define SSL_magic_pending_session_ptr GRPC_SHADOW_SSL_magic_pending_session_ptr
+#define SSL_max_seal_overhead GRPC_SHADOW_SSL_max_seal_overhead
+#define SSL_need_tmp_RSA GRPC_SHADOW_SSL_need_tmp_RSA
+#define SSL_new GRPC_SHADOW_SSL_new
+#define SSL_num_renegotiations GRPC_SHADOW_SSL_num_renegotiations
+#define SSL_peek GRPC_SHADOW_SSL_peek
+#define SSL_pending GRPC_SHADOW_SSL_pending
+#define SSL_process_quic_post_handshake GRPC_SHADOW_SSL_process_quic_post_handshake
+#define SSL_provide_quic_data GRPC_SHADOW_SSL_provide_quic_data
+#define SSL_quic_max_handshake_flight_len GRPC_SHADOW_SSL_quic_max_handshake_flight_len
+#define SSL_quic_read_level GRPC_SHADOW_SSL_quic_read_level
+#define SSL_quic_write_level GRPC_SHADOW_SSL_quic_write_level
+#define SSL_read GRPC_SHADOW_SSL_read
+#define SSL_renegotiate GRPC_SHADOW_SSL_renegotiate
+#define SSL_renegotiate_pending GRPC_SHADOW_SSL_renegotiate_pending
+#define SSL_reset_early_data_reject GRPC_SHADOW_SSL_reset_early_data_reject
+#define SSL_select_next_proto GRPC_SHADOW_SSL_select_next_proto
+#define SSL_send_fatal_alert GRPC_SHADOW_SSL_send_fatal_alert
+#define SSL_SESSION_early_data_capable GRPC_SHADOW_SSL_SESSION_early_data_capable
+#define SSL_SESSION_free GRPC_SHADOW_SSL_SESSION_free
+#define SSL_SESSION_from_bytes GRPC_SHADOW_SSL_SESSION_from_bytes
+#define SSL_SESSION_get0_cipher GRPC_SHADOW_SSL_SESSION_get0_cipher
+#define SSL_SESSION_get0_id_context GRPC_SHADOW_SSL_SESSION_get0_id_context
+#define SSL_SESSION_get0_ocsp_response GRPC_SHADOW_SSL_SESSION_get0_ocsp_response
+#define SSL_SESSION_get0_peer GRPC_SHADOW_SSL_SESSION_get0_peer
+#define SSL_SESSION_get0_peer_certificates GRPC_SHADOW_SSL_SESSION_get0_peer_certificates
+#define SSL_SESSION_get0_peer_sha256 GRPC_SHADOW_SSL_SESSION_get0_peer_sha256
+#define SSL_SESSION_get0_signed_cert_timestamp_list GRPC_SHADOW_SSL_SESSION_get0_signed_cert_timestamp_list
+#define SSL_SESSION_get0_ticket GRPC_SHADOW_SSL_SESSION_get0_ticket
+#define SSL_SESSION_get_ex_data GRPC_SHADOW_SSL_SESSION_get_ex_data
+#define SSL_SESSION_get_ex_new_index GRPC_SHADOW_SSL_SESSION_get_ex_new_index
+#define SSL_SESSION_get_id GRPC_SHADOW_SSL_SESSION_get_id
+#define SSL_SESSION_get_master_key GRPC_SHADOW_SSL_SESSION_get_master_key
+#define SSL_SESSION_get_protocol_version GRPC_SHADOW_SSL_SESSION_get_protocol_version
+#define SSL_SESSION_get_ticket_lifetime_hint GRPC_SHADOW_SSL_SESSION_get_ticket_lifetime_hint
+#define SSL_SESSION_get_time GRPC_SHADOW_SSL_SESSION_get_time
+#define SSL_SESSION_get_timeout GRPC_SHADOW_SSL_SESSION_get_timeout
+#define SSL_SESSION_get_version GRPC_SHADOW_SSL_SESSION_get_version
+#define SSL_SESSION_has_peer_sha256 GRPC_SHADOW_SSL_SESSION_has_peer_sha256
+#define SSL_SESSION_has_ticket GRPC_SHADOW_SSL_SESSION_has_ticket
+#define SSL_SESSION_is_resumable GRPC_SHADOW_SSL_SESSION_is_resumable
+#define SSL_SESSION_new GRPC_SHADOW_SSL_SESSION_new
+#define SSL_session_reused GRPC_SHADOW_SSL_session_reused
+#define SSL_SESSION_set1_id GRPC_SHADOW_SSL_SESSION_set1_id
+#define SSL_SESSION_set1_id_context GRPC_SHADOW_SSL_SESSION_set1_id_context
+#define SSL_SESSION_set_ex_data GRPC_SHADOW_SSL_SESSION_set_ex_data
+#define SSL_SESSION_set_protocol_version GRPC_SHADOW_SSL_SESSION_set_protocol_version
+#define SSL_SESSION_set_ticket GRPC_SHADOW_SSL_SESSION_set_ticket
+#define SSL_SESSION_set_time GRPC_SHADOW_SSL_SESSION_set_time
+#define SSL_SESSION_set_timeout GRPC_SHADOW_SSL_SESSION_set_timeout
+#define SSL_SESSION_should_be_single_use GRPC_SHADOW_SSL_SESSION_should_be_single_use
+#define SSL_SESSION_to_bytes GRPC_SHADOW_SSL_SESSION_to_bytes
+#define SSL_SESSION_to_bytes_for_ticket GRPC_SHADOW_SSL_SESSION_to_bytes_for_ticket
+#define SSL_SESSION_up_ref GRPC_SHADOW_SSL_SESSION_up_ref
+#define SSL_set0_chain GRPC_SHADOW_SSL_set0_chain
+#define SSL_set0_client_CAs GRPC_SHADOW_SSL_set0_client_CAs
+#define SSL_set0_rbio GRPC_SHADOW_SSL_set0_rbio
+#define SSL_set0_verify_cert_store GRPC_SHADOW_SSL_set0_verify_cert_store
+#define SSL_set0_wbio GRPC_SHADOW_SSL_set0_wbio
+#define SSL_set1_chain GRPC_SHADOW_SSL_set1_chain
+#define SSL_set1_curves GRPC_SHADOW_SSL_set1_curves
+#define SSL_set1_curves_list GRPC_SHADOW_SSL_set1_curves_list
+#define SSL_set1_delegated_credential GRPC_SHADOW_SSL_set1_delegated_credential
+#define SSL_set1_param GRPC_SHADOW_SSL_set1_param
+#define SSL_set1_sigalgs GRPC_SHADOW_SSL_set1_sigalgs
+#define SSL_set1_sigalgs_list GRPC_SHADOW_SSL_set1_sigalgs_list
+#define SSL_set1_tls_channel_id GRPC_SHADOW_SSL_set1_tls_channel_id
+#define SSL_set1_verify_cert_store GRPC_SHADOW_SSL_set1_verify_cert_store
+#define SSL_set_accept_state GRPC_SHADOW_SSL_set_accept_state
+#define SSL_set_alpn_protos GRPC_SHADOW_SSL_set_alpn_protos
+#define SSL_set_bio GRPC_SHADOW_SSL_set_bio
+#define SSL_set_cert_cb GRPC_SHADOW_SSL_set_cert_cb
+#define SSL_set_chain_and_key GRPC_SHADOW_SSL_set_chain_and_key
+#define SSL_set_cipher_list GRPC_SHADOW_SSL_set_cipher_list
+#define SSL_set_client_CA_list GRPC_SHADOW_SSL_set_client_CA_list
+#define SSL_set_connect_state GRPC_SHADOW_SSL_set_connect_state
+#define SSL_set_custom_verify GRPC_SHADOW_SSL_set_custom_verify
+#define SSL_set_early_data_enabled GRPC_SHADOW_SSL_set_early_data_enabled
+#define SSL_set_enforce_rsa_key_usage GRPC_SHADOW_SSL_set_enforce_rsa_key_usage
+#define SSL_set_ex_data GRPC_SHADOW_SSL_set_ex_data
+#define SSL_set_fd GRPC_SHADOW_SSL_set_fd
+#define SSL_set_ignore_tls13_downgrade GRPC_SHADOW_SSL_set_ignore_tls13_downgrade
+#define SSL_set_info_callback GRPC_SHADOW_SSL_set_info_callback
+#define SSL_set_jdk11_workaround GRPC_SHADOW_SSL_set_jdk11_workaround
+#define SSL_set_max_cert_list GRPC_SHADOW_SSL_set_max_cert_list
+#define SSL_set_max_proto_version GRPC_SHADOW_SSL_set_max_proto_version
+#define SSL_set_max_send_fragment GRPC_SHADOW_SSL_set_max_send_fragment
+#define SSL_set_min_proto_version GRPC_SHADOW_SSL_set_min_proto_version
+#define SSL_set_mode GRPC_SHADOW_SSL_set_mode
+#define SSL_set_msg_callback GRPC_SHADOW_SSL_set_msg_callback
+#define SSL_set_msg_callback_arg GRPC_SHADOW_SSL_set_msg_callback_arg
+#define SSL_set_mtu GRPC_SHADOW_SSL_set_mtu
+#define SSL_set_ocsp_response GRPC_SHADOW_SSL_set_ocsp_response
+#define SSL_set_options GRPC_SHADOW_SSL_set_options
+#define SSL_set_private_key_method GRPC_SHADOW_SSL_set_private_key_method
+#define SSL_set_psk_client_callback GRPC_SHADOW_SSL_set_psk_client_callback
+#define SSL_set_psk_server_callback GRPC_SHADOW_SSL_set_psk_server_callback
+#define SSL_set_purpose GRPC_SHADOW_SSL_set_purpose
+#define SSL_set_quic_method GRPC_SHADOW_SSL_set_quic_method
+#define SSL_set_quic_transport_params GRPC_SHADOW_SSL_set_quic_transport_params
+#define SSL_set_quiet_shutdown GRPC_SHADOW_SSL_set_quiet_shutdown
+#define SSL_set_read_ahead GRPC_SHADOW_SSL_set_read_ahead
+#define SSL_set_renegotiate_mode GRPC_SHADOW_SSL_set_renegotiate_mode
+#define SSL_set_retain_only_sha256_of_client_certs GRPC_SHADOW_SSL_set_retain_only_sha256_of_client_certs
+#define SSL_set_rfd GRPC_SHADOW_SSL_set_rfd
+#define SSL_set_session GRPC_SHADOW_SSL_set_session
+#define SSL_set_session_id_context GRPC_SHADOW_SSL_set_session_id_context
+#define SSL_set_shed_handshake_config GRPC_SHADOW_SSL_set_shed_handshake_config
+#define SSL_set_shutdown GRPC_SHADOW_SSL_set_shutdown
+#define SSL_set_signed_cert_timestamp_list GRPC_SHADOW_SSL_set_signed_cert_timestamp_list
+#define SSL_set_signing_algorithm_prefs GRPC_SHADOW_SSL_set_signing_algorithm_prefs
+#define SSL_set_srtp_profiles GRPC_SHADOW_SSL_set_srtp_profiles
+#define SSL_set_SSL_CTX GRPC_SHADOW_SSL_set_SSL_CTX
+#define SSL_set_state GRPC_SHADOW_SSL_set_state
+#define SSL_set_strict_cipher_list GRPC_SHADOW_SSL_set_strict_cipher_list
+#define SSL_set_tls_channel_id_enabled GRPC_SHADOW_SSL_set_tls_channel_id_enabled
+#define SSL_set_tlsext_host_name GRPC_SHADOW_SSL_set_tlsext_host_name
+#define SSL_set_tlsext_status_ocsp_resp GRPC_SHADOW_SSL_set_tlsext_status_ocsp_resp
+#define SSL_set_tlsext_status_type GRPC_SHADOW_SSL_set_tlsext_status_type
+#define SSL_set_tlsext_use_srtp GRPC_SHADOW_SSL_set_tlsext_use_srtp
+#define SSL_set_tmp_dh GRPC_SHADOW_SSL_set_tmp_dh
+#define SSL_set_tmp_dh_callback GRPC_SHADOW_SSL_set_tmp_dh_callback
+#define SSL_set_tmp_ecdh GRPC_SHADOW_SSL_set_tmp_ecdh
+#define SSL_set_tmp_rsa GRPC_SHADOW_SSL_set_tmp_rsa
+#define SSL_set_tmp_rsa_callback GRPC_SHADOW_SSL_set_tmp_rsa_callback
+#define SSL_set_token_binding_params GRPC_SHADOW_SSL_set_token_binding_params
+#define SSL_set_trust GRPC_SHADOW_SSL_set_trust
+#define SSL_set_verify GRPC_SHADOW_SSL_set_verify
+#define SSL_set_verify_depth GRPC_SHADOW_SSL_set_verify_depth
+#define SSL_set_verify_result GRPC_SHADOW_SSL_set_verify_result
+#define SSL_set_wfd GRPC_SHADOW_SSL_set_wfd
+#define SSL_shutdown GRPC_SHADOW_SSL_shutdown
+#define SSL_state GRPC_SHADOW_SSL_state
+#define SSL_state_string GRPC_SHADOW_SSL_state_string
+#define SSL_state_string_long GRPC_SHADOW_SSL_state_string_long
+#define SSL_total_renegotiations GRPC_SHADOW_SSL_total_renegotiations
+#define SSL_use_certificate GRPC_SHADOW_SSL_use_certificate
+#define SSL_use_certificate_ASN1 GRPC_SHADOW_SSL_use_certificate_ASN1
+#define SSL_use_certificate_file GRPC_SHADOW_SSL_use_certificate_file
+#define SSL_used_hello_retry_request GRPC_SHADOW_SSL_used_hello_retry_request
+#define SSL_use_PrivateKey GRPC_SHADOW_SSL_use_PrivateKey
+#define SSL_use_PrivateKey_ASN1 GRPC_SHADOW_SSL_use_PrivateKey_ASN1
+#define SSL_use_PrivateKey_file GRPC_SHADOW_SSL_use_PrivateKey_file
+#define SSL_use_psk_identity_hint GRPC_SHADOW_SSL_use_psk_identity_hint
+#define SSL_use_RSAPrivateKey GRPC_SHADOW_SSL_use_RSAPrivateKey
+#define SSL_use_RSAPrivateKey_ASN1 GRPC_SHADOW_SSL_use_RSAPrivateKey_ASN1
+#define SSL_use_RSAPrivateKey_file GRPC_SHADOW_SSL_use_RSAPrivateKey_file
+#define SSLv23_client_method GRPC_SHADOW_SSLv23_client_method
+#define SSLv23_method GRPC_SHADOW_SSLv23_method
+#define SSLv23_server_method GRPC_SHADOW_SSLv23_server_method
+#define SSL_version GRPC_SHADOW_SSL_version
+#define SSL_want GRPC_SHADOW_SSL_want
+#define SSL_write GRPC_SHADOW_SSL_write
+#define SXNET_add_id_asc GRPC_SHADOW_SXNET_add_id_asc
+#define SXNET_add_id_INTEGER GRPC_SHADOW_SXNET_add_id_INTEGER
+#define SXNET_add_id_ulong GRPC_SHADOW_SXNET_add_id_ulong
+#define SXNET_free GRPC_SHADOW_SXNET_free
+#define SXNET_get_id_asc GRPC_SHADOW_SXNET_get_id_asc
+#define SXNET_get_id_INTEGER GRPC_SHADOW_SXNET_get_id_INTEGER
+#define SXNET_get_id_ulong GRPC_SHADOW_SXNET_get_id_ulong
+#define SXNETID_free GRPC_SHADOW_SXNETID_free
+#define SXNETID_it GRPC_SHADOW_SXNETID_it
+#define SXNETID_new GRPC_SHADOW_SXNETID_new
+#define SXNET_it GRPC_SHADOW_SXNET_it
+#define SXNET_new GRPC_SHADOW_SXNET_new
+#define TLS_client_method GRPC_SHADOW_TLS_client_method
+#define TLS_method GRPC_SHADOW_TLS_method
+#define TLS_server_method GRPC_SHADOW_TLS_server_method
+#define TLSv1_1_client_method GRPC_SHADOW_TLSv1_1_client_method
+#define TLSv1_1_method GRPC_SHADOW_TLSv1_1_method
+#define TLSv1_1_server_method GRPC_SHADOW_TLSv1_1_server_method
+#define TLSv1_2_client_method GRPC_SHADOW_TLSv1_2_client_method
+#define TLSv1_2_method GRPC_SHADOW_TLSv1_2_method
+#define TLSv1_2_server_method GRPC_SHADOW_TLSv1_2_server_method
+#define TLSv1_client_method GRPC_SHADOW_TLSv1_client_method
+#define TLSv1_method GRPC_SHADOW_TLSv1_method
+#define TLSv1_server_method GRPC_SHADOW_TLSv1_server_method
+#define TLS_with_buffers_method GRPC_SHADOW_TLS_with_buffers_method
+#define tree_find_sk GRPC_SHADOW_tree_find_sk
+#define USERNOTICE_free GRPC_SHADOW_USERNOTICE_free
+#define USERNOTICE_it GRPC_SHADOW_USERNOTICE_it
+#define USERNOTICE_new GRPC_SHADOW_USERNOTICE_new
+#define UTF8_getc GRPC_SHADOW_UTF8_getc
+#define UTF8_putc GRPC_SHADOW_UTF8_putc
+#define v2i_ASN1_BIT_STRING GRPC_SHADOW_v2i_ASN1_BIT_STRING
+#define v2i_GENERAL_NAME GRPC_SHADOW_v2i_GENERAL_NAME
+#define v2i_GENERAL_NAME_ex GRPC_SHADOW_v2i_GENERAL_NAME_ex
+#define v2i_GENERAL_NAMES GRPC_SHADOW_v2i_GENERAL_NAMES
+#define v3_akey_id GRPC_SHADOW_v3_akey_id
+#define v3_alt GRPC_SHADOW_v3_alt
+#define v3_bcons GRPC_SHADOW_v3_bcons
+#define v3_cpols GRPC_SHADOW_v3_cpols
+#define v3_crld GRPC_SHADOW_v3_crld
+#define v3_crl_invdate GRPC_SHADOW_v3_crl_invdate
+#define v3_crl_num GRPC_SHADOW_v3_crl_num
+#define v3_crl_reason GRPC_SHADOW_v3_crl_reason
+#define v3_delta_crl GRPC_SHADOW_v3_delta_crl
+#define v3_ext_ku GRPC_SHADOW_v3_ext_ku
+#define v3_freshest_crl GRPC_SHADOW_v3_freshest_crl
+#define v3_idp GRPC_SHADOW_v3_idp
+#define v3_info GRPC_SHADOW_v3_info
+#define v3_inhibit_anyp GRPC_SHADOW_v3_inhibit_anyp
+#define v3_key_usage GRPC_SHADOW_v3_key_usage
+#define v3_name_constraints GRPC_SHADOW_v3_name_constraints
+#define v3_nscert GRPC_SHADOW_v3_nscert
+#define v3_ns_ia5_list GRPC_SHADOW_v3_ns_ia5_list
+#define v3_ocsp_accresp GRPC_SHADOW_v3_ocsp_accresp
+#define v3_ocsp_nocheck GRPC_SHADOW_v3_ocsp_nocheck
+#define v3_pci GRPC_SHADOW_v3_pci
+#define v3_pkey_usage_period GRPC_SHADOW_v3_pkey_usage_period
+#define v3_policy_constraints GRPC_SHADOW_v3_policy_constraints
+#define v3_policy_mappings GRPC_SHADOW_v3_policy_mappings
+#define v3_sinfo GRPC_SHADOW_v3_sinfo
+#define v3_skey_id GRPC_SHADOW_v3_skey_id
+#define v3_sxnet GRPC_SHADOW_v3_sxnet
+#define vpaes_cbc_encrypt GRPC_SHADOW_vpaes_cbc_encrypt
+#define vpaes_ctr32_encrypt_blocks GRPC_SHADOW_vpaes_ctr32_encrypt_blocks
+#define vpaes_decrypt GRPC_SHADOW_vpaes_decrypt
+#define vpaes_encrypt GRPC_SHADOW_vpaes_encrypt
+#define vpaes_set_decrypt_key GRPC_SHADOW_vpaes_set_decrypt_key
+#define vpaes_set_encrypt_key GRPC_SHADOW_vpaes_set_encrypt_key
+#define X25519 GRPC_SHADOW_X25519
+#define x25519_asn1_meth GRPC_SHADOW_x25519_asn1_meth
+#define x25519_ge_add GRPC_SHADOW_x25519_ge_add
+#define x25519_ge_frombytes_vartime GRPC_SHADOW_x25519_ge_frombytes_vartime
+#define x25519_ge_p1p1_to_p2 GRPC_SHADOW_x25519_ge_p1p1_to_p2
+#define x25519_ge_p1p1_to_p3 GRPC_SHADOW_x25519_ge_p1p1_to_p3
+#define x25519_ge_p3_to_cached GRPC_SHADOW_x25519_ge_p3_to_cached
+#define x25519_ge_scalarmult GRPC_SHADOW_x25519_ge_scalarmult
+#define x25519_ge_scalarmult_base GRPC_SHADOW_x25519_ge_scalarmult_base
+#define x25519_ge_scalarmult_small_precomp GRPC_SHADOW_x25519_ge_scalarmult_small_precomp
+#define x25519_ge_sub GRPC_SHADOW_x25519_ge_sub
+#define x25519_ge_tobytes GRPC_SHADOW_x25519_ge_tobytes
+#define X25519_keypair GRPC_SHADOW_X25519_keypair
+#define x25519_pkey_meth GRPC_SHADOW_x25519_pkey_meth
+#define X25519_public_from_private GRPC_SHADOW_X25519_public_from_private
+#define x25519_sc_reduce GRPC_SHADOW_x25519_sc_reduce
+#define X509_add1_ext_i2d GRPC_SHADOW_X509_add1_ext_i2d
+#define X509_add1_reject_object GRPC_SHADOW_X509_add1_reject_object
+#define X509_add1_trust_object GRPC_SHADOW_X509_add1_trust_object
+#define X509_add_ext GRPC_SHADOW_X509_add_ext
+#define X509_ALGOR_cmp GRPC_SHADOW_X509_ALGOR_cmp
+#define X509_ALGOR_dup GRPC_SHADOW_X509_ALGOR_dup
+#define X509_ALGOR_free GRPC_SHADOW_X509_ALGOR_free
+#define X509_ALGOR_get0 GRPC_SHADOW_X509_ALGOR_get0
+#define X509_ALGOR_it GRPC_SHADOW_X509_ALGOR_it
+#define X509_ALGOR_new GRPC_SHADOW_X509_ALGOR_new
+#define X509_ALGOR_set0 GRPC_SHADOW_X509_ALGOR_set0
+#define X509_ALGOR_set_md GRPC_SHADOW_X509_ALGOR_set_md
+#define X509_ALGORS_it GRPC_SHADOW_X509_ALGORS_it
+#define X509_alias_get0 GRPC_SHADOW_X509_alias_get0
+#define X509_alias_set1 GRPC_SHADOW_X509_alias_set1
+#define X509at_add1_attr GRPC_SHADOW_X509at_add1_attr
+#define X509at_add1_attr_by_NID GRPC_SHADOW_X509at_add1_attr_by_NID
+#define X509at_add1_attr_by_OBJ GRPC_SHADOW_X509at_add1_attr_by_OBJ
+#define X509at_add1_attr_by_txt GRPC_SHADOW_X509at_add1_attr_by_txt
+#define X509at_delete_attr GRPC_SHADOW_X509at_delete_attr
+#define X509at_get0_data_by_OBJ GRPC_SHADOW_X509at_get0_data_by_OBJ
+#define X509at_get_attr GRPC_SHADOW_X509at_get_attr
+#define X509at_get_attr_by_NID GRPC_SHADOW_X509at_get_attr_by_NID
+#define X509at_get_attr_by_OBJ GRPC_SHADOW_X509at_get_attr_by_OBJ
+#define X509at_get_attr_count GRPC_SHADOW_X509at_get_attr_count
+#define X509_ATTRIBUTE_count GRPC_SHADOW_X509_ATTRIBUTE_count
+#define X509_ATTRIBUTE_create GRPC_SHADOW_X509_ATTRIBUTE_create
+#define X509_ATTRIBUTE_create_by_NID GRPC_SHADOW_X509_ATTRIBUTE_create_by_NID
+#define X509_ATTRIBUTE_create_by_OBJ GRPC_SHADOW_X509_ATTRIBUTE_create_by_OBJ
+#define X509_ATTRIBUTE_create_by_txt GRPC_SHADOW_X509_ATTRIBUTE_create_by_txt
+#define X509_ATTRIBUTE_dup GRPC_SHADOW_X509_ATTRIBUTE_dup
+#define X509_ATTRIBUTE_free GRPC_SHADOW_X509_ATTRIBUTE_free
+#define X509_ATTRIBUTE_get0_data GRPC_SHADOW_X509_ATTRIBUTE_get0_data
+#define X509_ATTRIBUTE_get0_object GRPC_SHADOW_X509_ATTRIBUTE_get0_object
+#define X509_ATTRIBUTE_get0_type GRPC_SHADOW_X509_ATTRIBUTE_get0_type
+#define X509_ATTRIBUTE_it GRPC_SHADOW_X509_ATTRIBUTE_it
+#define X509_ATTRIBUTE_new GRPC_SHADOW_X509_ATTRIBUTE_new
+#define X509_ATTRIBUTE_set1_data GRPC_SHADOW_X509_ATTRIBUTE_set1_data
+#define X509_ATTRIBUTE_set1_object GRPC_SHADOW_X509_ATTRIBUTE_set1_object
+#define X509_ATTRIBUTE_SET_it GRPC_SHADOW_X509_ATTRIBUTE_SET_it
+#define X509_CERT_AUX_free GRPC_SHADOW_X509_CERT_AUX_free
+#define X509_CERT_AUX_it GRPC_SHADOW_X509_CERT_AUX_it
+#define X509_CERT_AUX_new GRPC_SHADOW_X509_CERT_AUX_new
+#define X509_CERT_AUX_print GRPC_SHADOW_X509_CERT_AUX_print
+#define X509_chain_check_suiteb GRPC_SHADOW_X509_chain_check_suiteb
+#define X509_chain_up_ref GRPC_SHADOW_X509_chain_up_ref
+#define X509_check_akid GRPC_SHADOW_X509_check_akid
+#define X509_check_ca GRPC_SHADOW_X509_check_ca
+#define X509_check_email GRPC_SHADOW_X509_check_email
+#define X509_check_host GRPC_SHADOW_X509_check_host
+#define X509_check_ip GRPC_SHADOW_X509_check_ip
+#define X509_check_ip_asc GRPC_SHADOW_X509_check_ip_asc
+#define X509_check_issued GRPC_SHADOW_X509_check_issued
+#define X509_check_private_key GRPC_SHADOW_X509_check_private_key
+#define X509_check_purpose GRPC_SHADOW_X509_check_purpose
+#define X509_check_trust GRPC_SHADOW_X509_check_trust
+#define X509_CINF_free GRPC_SHADOW_X509_CINF_free
+#define X509_CINF_it GRPC_SHADOW_X509_CINF_it
+#define X509_CINF_new GRPC_SHADOW_X509_CINF_new
+#define X509_cmp GRPC_SHADOW_X509_cmp
+#define X509_cmp_current_time GRPC_SHADOW_X509_cmp_current_time
+#define X509_cmp_time GRPC_SHADOW_X509_cmp_time
+#define X509_CRL_add0_revoked GRPC_SHADOW_X509_CRL_add0_revoked
+#define X509_CRL_add1_ext_i2d GRPC_SHADOW_X509_CRL_add1_ext_i2d
+#define X509_CRL_add_ext GRPC_SHADOW_X509_CRL_add_ext
+#define X509_CRL_check_suiteb GRPC_SHADOW_X509_CRL_check_suiteb
+#define X509_CRL_cmp GRPC_SHADOW_X509_CRL_cmp
+#define X509_CRL_delete_ext GRPC_SHADOW_X509_CRL_delete_ext
+#define X509_CRL_diff GRPC_SHADOW_X509_CRL_diff
+#define X509_CRL_digest GRPC_SHADOW_X509_CRL_digest
+#define X509_CRL_dup GRPC_SHADOW_X509_CRL_dup
+#define X509_CRL_free GRPC_SHADOW_X509_CRL_free
+#define X509_CRL_get0_by_cert GRPC_SHADOW_X509_CRL_get0_by_cert
+#define X509_CRL_get0_by_serial GRPC_SHADOW_X509_CRL_get0_by_serial
+#define X509_CRL_get0_lastUpdate GRPC_SHADOW_X509_CRL_get0_lastUpdate
+#define X509_CRL_get0_nextUpdate GRPC_SHADOW_X509_CRL_get0_nextUpdate
+#define X509_CRL_get0_signature GRPC_SHADOW_X509_CRL_get0_signature
+#define X509_CRL_get_ext GRPC_SHADOW_X509_CRL_get_ext
+#define X509_CRL_get_ext_by_critical GRPC_SHADOW_X509_CRL_get_ext_by_critical
+#define X509_CRL_get_ext_by_NID GRPC_SHADOW_X509_CRL_get_ext_by_NID
+#define X509_CRL_get_ext_by_OBJ GRPC_SHADOW_X509_CRL_get_ext_by_OBJ
+#define X509_CRL_get_ext_count GRPC_SHADOW_X509_CRL_get_ext_count
+#define X509_CRL_get_ext_d2i GRPC_SHADOW_X509_CRL_get_ext_d2i
+#define X509_CRL_get_meth_data GRPC_SHADOW_X509_CRL_get_meth_data
+#define X509_CRL_get_signature_nid GRPC_SHADOW_X509_CRL_get_signature_nid
+#define X509_CRL_INFO_free GRPC_SHADOW_X509_CRL_INFO_free
+#define X509_CRL_INFO_it GRPC_SHADOW_X509_CRL_INFO_it
+#define X509_CRL_INFO_new GRPC_SHADOW_X509_CRL_INFO_new
+#define X509_CRL_it GRPC_SHADOW_X509_CRL_it
+#define X509_CRL_match GRPC_SHADOW_X509_CRL_match
+#define X509_CRL_METHOD_free GRPC_SHADOW_X509_CRL_METHOD_free
+#define X509_CRL_METHOD_new GRPC_SHADOW_X509_CRL_METHOD_new
+#define X509_CRL_new GRPC_SHADOW_X509_CRL_new
+#define X509_CRL_print GRPC_SHADOW_X509_CRL_print
+#define X509_CRL_print_fp GRPC_SHADOW_X509_CRL_print_fp
+#define X509_CRL_set_default_method GRPC_SHADOW_X509_CRL_set_default_method
+#define X509_CRL_set_issuer_name GRPC_SHADOW_X509_CRL_set_issuer_name
+#define X509_CRL_set_lastUpdate GRPC_SHADOW_X509_CRL_set_lastUpdate
+#define X509_CRL_set_meth_data GRPC_SHADOW_X509_CRL_set_meth_data
+#define X509_CRL_set_nextUpdate GRPC_SHADOW_X509_CRL_set_nextUpdate
+#define X509_CRL_set_version GRPC_SHADOW_X509_CRL_set_version
+#define X509_CRL_sign GRPC_SHADOW_X509_CRL_sign
+#define X509_CRL_sign_ctx GRPC_SHADOW_X509_CRL_sign_ctx
+#define X509_CRL_sort GRPC_SHADOW_X509_CRL_sort
+#define X509_CRL_up_ref GRPC_SHADOW_X509_CRL_up_ref
+#define X509_CRL_verify GRPC_SHADOW_X509_CRL_verify
+#define X509_delete_ext GRPC_SHADOW_X509_delete_ext
+#define X509_digest GRPC_SHADOW_X509_digest
+#define x509_digest_sign_algorithm GRPC_SHADOW_x509_digest_sign_algorithm
+#define x509_digest_verify_init GRPC_SHADOW_x509_digest_verify_init
+#define X509_dup GRPC_SHADOW_X509_dup
+#define X509_email_free GRPC_SHADOW_X509_email_free
+#define X509_EXTENSION_create_by_NID GRPC_SHADOW_X509_EXTENSION_create_by_NID
+#define X509_EXTENSION_create_by_OBJ GRPC_SHADOW_X509_EXTENSION_create_by_OBJ
+#define X509_EXTENSION_dup GRPC_SHADOW_X509_EXTENSION_dup
+#define X509_EXTENSION_free GRPC_SHADOW_X509_EXTENSION_free
+#define X509_EXTENSION_get_critical GRPC_SHADOW_X509_EXTENSION_get_critical
+#define X509_EXTENSION_get_data GRPC_SHADOW_X509_EXTENSION_get_data
+#define X509_EXTENSION_get_object GRPC_SHADOW_X509_EXTENSION_get_object
+#define X509_EXTENSION_it GRPC_SHADOW_X509_EXTENSION_it
+#define X509_EXTENSION_new GRPC_SHADOW_X509_EXTENSION_new
+#define X509_EXTENSION_set_critical GRPC_SHADOW_X509_EXTENSION_set_critical
+#define X509_EXTENSION_set_data GRPC_SHADOW_X509_EXTENSION_set_data
+#define X509_EXTENSION_set_object GRPC_SHADOW_X509_EXTENSION_set_object
+#define X509_EXTENSIONS_it GRPC_SHADOW_X509_EXTENSIONS_it
+#define X509_find_by_issuer_and_serial GRPC_SHADOW_X509_find_by_issuer_and_serial
+#define X509_find_by_subject GRPC_SHADOW_X509_find_by_subject
+#define X509_free GRPC_SHADOW_X509_free
+#define X509_get0_extensions GRPC_SHADOW_X509_get0_extensions
+#define X509_get0_notAfter GRPC_SHADOW_X509_get0_notAfter
+#define X509_get0_notBefore GRPC_SHADOW_X509_get0_notBefore
+#define X509_get0_pubkey_bitstr GRPC_SHADOW_X509_get0_pubkey_bitstr
+#define X509_get0_signature GRPC_SHADOW_X509_get0_signature
+#define X509_get0_tbs_sigalg GRPC_SHADOW_X509_get0_tbs_sigalg
+#define X509_get1_email GRPC_SHADOW_X509_get1_email
+#define X509_get1_ocsp GRPC_SHADOW_X509_get1_ocsp
+#define X509_get_default_cert_area GRPC_SHADOW_X509_get_default_cert_area
+#define X509_get_default_cert_dir GRPC_SHADOW_X509_get_default_cert_dir
+#define X509_get_default_cert_dir_env GRPC_SHADOW_X509_get_default_cert_dir_env
+#define X509_get_default_cert_file GRPC_SHADOW_X509_get_default_cert_file
+#define X509_get_default_cert_file_env GRPC_SHADOW_X509_get_default_cert_file_env
+#define X509_get_default_private_dir GRPC_SHADOW_X509_get_default_private_dir
+#define X509_get_ex_data GRPC_SHADOW_X509_get_ex_data
+#define X509_get_ex_new_index GRPC_SHADOW_X509_get_ex_new_index
+#define X509_get_ext GRPC_SHADOW_X509_get_ext
+#define X509_get_ext_by_critical GRPC_SHADOW_X509_get_ext_by_critical
+#define X509_get_ext_by_NID GRPC_SHADOW_X509_get_ext_by_NID
+#define X509_get_ext_by_OBJ GRPC_SHADOW_X509_get_ext_by_OBJ
+#define X509_get_ext_count GRPC_SHADOW_X509_get_ext_count
+#define X509_get_ext_d2i GRPC_SHADOW_X509_get_ext_d2i
+#define X509_get_extended_key_usage GRPC_SHADOW_X509_get_extended_key_usage
+#define X509_get_extension_flags GRPC_SHADOW_X509_get_extension_flags
+#define X509_get_issuer_name GRPC_SHADOW_X509_get_issuer_name
+#define X509_get_key_usage GRPC_SHADOW_X509_get_key_usage
+#define X509_get_pubkey GRPC_SHADOW_X509_get_pubkey
+#define X509_get_serialNumber GRPC_SHADOW_X509_get_serialNumber
+#define X509_get_signature_nid GRPC_SHADOW_X509_get_signature_nid
+#define X509_get_subject_name GRPC_SHADOW_X509_get_subject_name
+#define X509_gmtime_adj GRPC_SHADOW_X509_gmtime_adj
+#define X509_INFO_free GRPC_SHADOW_X509_INFO_free
+#define X509_INFO_new GRPC_SHADOW_X509_INFO_new
+#define X509_issuer_and_serial_cmp GRPC_SHADOW_X509_issuer_and_serial_cmp
+#define X509_issuer_and_serial_hash GRPC_SHADOW_X509_issuer_and_serial_hash
+#define X509_issuer_name_cmp GRPC_SHADOW_X509_issuer_name_cmp
+#define X509_issuer_name_hash GRPC_SHADOW_X509_issuer_name_hash
+#define X509_issuer_name_hash_old GRPC_SHADOW_X509_issuer_name_hash_old
+#define X509_it GRPC_SHADOW_X509_it
+#define X509_keyid_get0 GRPC_SHADOW_X509_keyid_get0
+#define X509_keyid_set1 GRPC_SHADOW_X509_keyid_set1
+#define X509_load_cert_crl_file GRPC_SHADOW_X509_load_cert_crl_file
+#define X509_load_cert_file GRPC_SHADOW_X509_load_cert_file
+#define X509_load_crl_file GRPC_SHADOW_X509_load_crl_file
+#define X509_LOOKUP_by_alias GRPC_SHADOW_X509_LOOKUP_by_alias
+#define X509_LOOKUP_by_fingerprint GRPC_SHADOW_X509_LOOKUP_by_fingerprint
+#define X509_LOOKUP_by_issuer_serial GRPC_SHADOW_X509_LOOKUP_by_issuer_serial
+#define X509_LOOKUP_by_subject GRPC_SHADOW_X509_LOOKUP_by_subject
+#define X509_LOOKUP_ctrl GRPC_SHADOW_X509_LOOKUP_ctrl
+#define X509_LOOKUP_file GRPC_SHADOW_X509_LOOKUP_file
+#define X509_LOOKUP_free GRPC_SHADOW_X509_LOOKUP_free
+#define X509_LOOKUP_hash_dir GRPC_SHADOW_X509_LOOKUP_hash_dir
+#define X509_LOOKUP_init GRPC_SHADOW_X509_LOOKUP_init
+#define X509_LOOKUP_new GRPC_SHADOW_X509_LOOKUP_new
+#define X509_LOOKUP_shutdown GRPC_SHADOW_X509_LOOKUP_shutdown
+#define X509_NAME_add_entry GRPC_SHADOW_X509_NAME_add_entry
+#define X509_NAME_add_entry_by_NID GRPC_SHADOW_X509_NAME_add_entry_by_NID
+#define X509_NAME_add_entry_by_OBJ GRPC_SHADOW_X509_NAME_add_entry_by_OBJ
+#define X509_NAME_add_entry_by_txt GRPC_SHADOW_X509_NAME_add_entry_by_txt
+#define X509_NAME_cmp GRPC_SHADOW_X509_NAME_cmp
+#define X509_NAME_delete_entry GRPC_SHADOW_X509_NAME_delete_entry
+#define X509_NAME_digest GRPC_SHADOW_X509_NAME_digest
+#define X509_NAME_dup GRPC_SHADOW_X509_NAME_dup
+#define X509_NAME_ENTRIES_it GRPC_SHADOW_X509_NAME_ENTRIES_it
+#define X509_NAME_entry_count GRPC_SHADOW_X509_NAME_entry_count
+#define X509_NAME_ENTRY_create_by_NID GRPC_SHADOW_X509_NAME_ENTRY_create_by_NID
+#define X509_NAME_ENTRY_create_by_OBJ GRPC_SHADOW_X509_NAME_ENTRY_create_by_OBJ
+#define X509_NAME_ENTRY_create_by_txt GRPC_SHADOW_X509_NAME_ENTRY_create_by_txt
+#define X509_NAME_ENTRY_dup GRPC_SHADOW_X509_NAME_ENTRY_dup
+#define X509_NAME_ENTRY_free GRPC_SHADOW_X509_NAME_ENTRY_free
+#define X509_NAME_ENTRY_get_data GRPC_SHADOW_X509_NAME_ENTRY_get_data
+#define X509_NAME_ENTRY_get_object GRPC_SHADOW_X509_NAME_ENTRY_get_object
+#define X509_NAME_ENTRY_it GRPC_SHADOW_X509_NAME_ENTRY_it
+#define X509_NAME_ENTRY_new GRPC_SHADOW_X509_NAME_ENTRY_new
+#define X509_NAME_ENTRY_set GRPC_SHADOW_X509_NAME_ENTRY_set
+#define X509_NAME_ENTRY_set_data GRPC_SHADOW_X509_NAME_ENTRY_set_data
+#define X509_NAME_ENTRY_set_object GRPC_SHADOW_X509_NAME_ENTRY_set_object
+#define X509_NAME_free GRPC_SHADOW_X509_NAME_free
+#define X509_NAME_get0_der GRPC_SHADOW_X509_NAME_get0_der
+#define X509_NAME_get_entry GRPC_SHADOW_X509_NAME_get_entry
+#define X509_NAME_get_index_by_NID GRPC_SHADOW_X509_NAME_get_index_by_NID
+#define X509_NAME_get_index_by_OBJ GRPC_SHADOW_X509_NAME_get_index_by_OBJ
+#define X509_NAME_get_text_by_NID GRPC_SHADOW_X509_NAME_get_text_by_NID
+#define X509_NAME_get_text_by_OBJ GRPC_SHADOW_X509_NAME_get_text_by_OBJ
+#define X509_NAME_hash GRPC_SHADOW_X509_NAME_hash
+#define X509_NAME_hash_old GRPC_SHADOW_X509_NAME_hash_old
+#define X509_NAME_INTERNAL_it GRPC_SHADOW_X509_NAME_INTERNAL_it
+#define X509_NAME_it GRPC_SHADOW_X509_NAME_it
+#define X509_NAME_new GRPC_SHADOW_X509_NAME_new
+#define X509_NAME_oneline GRPC_SHADOW_X509_NAME_oneline
+#define X509_NAME_print GRPC_SHADOW_X509_NAME_print
+#define X509_NAME_print_ex GRPC_SHADOW_X509_NAME_print_ex
+#define X509_NAME_print_ex_fp GRPC_SHADOW_X509_NAME_print_ex_fp
+#define X509_NAME_set GRPC_SHADOW_X509_NAME_set
+#define X509_new GRPC_SHADOW_X509_new
+#define X509_OBJECT_free_contents GRPC_SHADOW_X509_OBJECT_free_contents
+#define X509_OBJECT_get0_X509 GRPC_SHADOW_X509_OBJECT_get0_X509
+#define X509_OBJECT_get_type GRPC_SHADOW_X509_OBJECT_get_type
+#define X509_OBJECT_idx_by_subject GRPC_SHADOW_X509_OBJECT_idx_by_subject
+#define X509_OBJECT_retrieve_by_subject GRPC_SHADOW_X509_OBJECT_retrieve_by_subject
+#define X509_OBJECT_retrieve_match GRPC_SHADOW_X509_OBJECT_retrieve_match
+#define X509_OBJECT_up_ref_count GRPC_SHADOW_X509_OBJECT_up_ref_count
+#define X509_ocspid_print GRPC_SHADOW_X509_ocspid_print
+#define X509_parse_from_buffer GRPC_SHADOW_X509_parse_from_buffer
+#define X509_PKEY_free GRPC_SHADOW_X509_PKEY_free
+#define X509_PKEY_new GRPC_SHADOW_X509_PKEY_new
+#define X509_policy_check GRPC_SHADOW_X509_policy_check
+#define X509_policy_level_get0_node GRPC_SHADOW_X509_policy_level_get0_node
+#define X509_policy_level_node_count GRPC_SHADOW_X509_policy_level_node_count
+#define X509_policy_node_get0_parent GRPC_SHADOW_X509_policy_node_get0_parent
+#define X509_policy_node_get0_policy GRPC_SHADOW_X509_policy_node_get0_policy
+#define X509_policy_node_get0_qualifiers GRPC_SHADOW_X509_policy_node_get0_qualifiers
+#define X509_POLICY_NODE_print GRPC_SHADOW_X509_POLICY_NODE_print
+#define X509_policy_tree_free GRPC_SHADOW_X509_policy_tree_free
+#define X509_policy_tree_get0_level GRPC_SHADOW_X509_policy_tree_get0_level
+#define X509_policy_tree_get0_policies GRPC_SHADOW_X509_policy_tree_get0_policies
+#define X509_policy_tree_get0_user_policies GRPC_SHADOW_X509_policy_tree_get0_user_policies
+#define X509_policy_tree_level_count GRPC_SHADOW_X509_policy_tree_level_count
+#define X509_print GRPC_SHADOW_X509_print
+#define X509_print_ex GRPC_SHADOW_X509_print_ex
+#define X509_print_ex_fp GRPC_SHADOW_X509_print_ex_fp
+#define X509_print_fp GRPC_SHADOW_X509_print_fp
+#define x509_print_rsa_pss_params GRPC_SHADOW_x509_print_rsa_pss_params
+#define X509_pubkey_digest GRPC_SHADOW_X509_pubkey_digest
+#define X509_PUBKEY_free GRPC_SHADOW_X509_PUBKEY_free
+#define X509_PUBKEY_get GRPC_SHADOW_X509_PUBKEY_get
+#define X509_PUBKEY_get0_param GRPC_SHADOW_X509_PUBKEY_get0_param
+#define X509_PUBKEY_it GRPC_SHADOW_X509_PUBKEY_it
+#define X509_PUBKEY_new GRPC_SHADOW_X509_PUBKEY_new
+#define X509_PUBKEY_set GRPC_SHADOW_X509_PUBKEY_set
+#define X509_PUBKEY_set0_param GRPC_SHADOW_X509_PUBKEY_set0_param
+#define X509_PURPOSE_add GRPC_SHADOW_X509_PURPOSE_add
+#define X509_PURPOSE_cleanup GRPC_SHADOW_X509_PURPOSE_cleanup
+#define X509_PURPOSE_get0 GRPC_SHADOW_X509_PURPOSE_get0
+#define X509_PURPOSE_get0_name GRPC_SHADOW_X509_PURPOSE_get0_name
+#define X509_PURPOSE_get0_sname GRPC_SHADOW_X509_PURPOSE_get0_sname
+#define X509_PURPOSE_get_by_id GRPC_SHADOW_X509_PURPOSE_get_by_id
+#define X509_PURPOSE_get_by_sname GRPC_SHADOW_X509_PURPOSE_get_by_sname
+#define X509_PURPOSE_get_count GRPC_SHADOW_X509_PURPOSE_get_count
+#define X509_PURPOSE_get_id GRPC_SHADOW_X509_PURPOSE_get_id
+#define X509_PURPOSE_get_trust GRPC_SHADOW_X509_PURPOSE_get_trust
+#define X509_PURPOSE_set GRPC_SHADOW_X509_PURPOSE_set
+#define X509_reject_clear GRPC_SHADOW_X509_reject_clear
+#define X509_REQ_add1_attr GRPC_SHADOW_X509_REQ_add1_attr
+#define X509_REQ_add1_attr_by_NID GRPC_SHADOW_X509_REQ_add1_attr_by_NID
+#define X509_REQ_add1_attr_by_OBJ GRPC_SHADOW_X509_REQ_add1_attr_by_OBJ
+#define X509_REQ_add1_attr_by_txt GRPC_SHADOW_X509_REQ_add1_attr_by_txt
+#define X509_REQ_add_extensions GRPC_SHADOW_X509_REQ_add_extensions
+#define X509_REQ_add_extensions_nid GRPC_SHADOW_X509_REQ_add_extensions_nid
+#define X509_REQ_check_private_key GRPC_SHADOW_X509_REQ_check_private_key
+#define X509_REQ_delete_attr GRPC_SHADOW_X509_REQ_delete_attr
+#define X509_REQ_digest GRPC_SHADOW_X509_REQ_digest
+#define X509_REQ_dup GRPC_SHADOW_X509_REQ_dup
+#define X509_REQ_extension_nid GRPC_SHADOW_X509_REQ_extension_nid
+#define X509_REQ_free GRPC_SHADOW_X509_REQ_free
+#define X509_REQ_get0_signature GRPC_SHADOW_X509_REQ_get0_signature
+#define X509_REQ_get1_email GRPC_SHADOW_X509_REQ_get1_email
+#define X509_REQ_get_attr GRPC_SHADOW_X509_REQ_get_attr
+#define X509_REQ_get_attr_by_NID GRPC_SHADOW_X509_REQ_get_attr_by_NID
+#define X509_REQ_get_attr_by_OBJ GRPC_SHADOW_X509_REQ_get_attr_by_OBJ
+#define X509_REQ_get_attr_count GRPC_SHADOW_X509_REQ_get_attr_count
+#define X509_REQ_get_extension_nids GRPC_SHADOW_X509_REQ_get_extension_nids
+#define X509_REQ_get_extensions GRPC_SHADOW_X509_REQ_get_extensions
+#define X509_REQ_get_pubkey GRPC_SHADOW_X509_REQ_get_pubkey
+#define X509_REQ_get_signature_nid GRPC_SHADOW_X509_REQ_get_signature_nid
+#define X509_REQ_INFO_free GRPC_SHADOW_X509_REQ_INFO_free
+#define X509_REQ_INFO_it GRPC_SHADOW_X509_REQ_INFO_it
+#define X509_REQ_INFO_new GRPC_SHADOW_X509_REQ_INFO_new
+#define X509_REQ_it GRPC_SHADOW_X509_REQ_it
+#define X509_REQ_new GRPC_SHADOW_X509_REQ_new
+#define X509_REQ_print GRPC_SHADOW_X509_REQ_print
+#define X509_REQ_print_ex GRPC_SHADOW_X509_REQ_print_ex
+#define X509_REQ_print_fp GRPC_SHADOW_X509_REQ_print_fp
+#define X509_REQ_set_extension_nids GRPC_SHADOW_X509_REQ_set_extension_nids
+#define X509_REQ_set_pubkey GRPC_SHADOW_X509_REQ_set_pubkey
+#define X509_REQ_set_subject_name GRPC_SHADOW_X509_REQ_set_subject_name
+#define X509_REQ_set_version GRPC_SHADOW_X509_REQ_set_version
+#define X509_REQ_sign GRPC_SHADOW_X509_REQ_sign
+#define X509_REQ_sign_ctx GRPC_SHADOW_X509_REQ_sign_ctx
+#define X509_REQ_to_X509 GRPC_SHADOW_X509_REQ_to_X509
+#define X509_REQ_verify GRPC_SHADOW_X509_REQ_verify
+#define X509_REVOKED_add1_ext_i2d GRPC_SHADOW_X509_REVOKED_add1_ext_i2d
+#define X509_REVOKED_add_ext GRPC_SHADOW_X509_REVOKED_add_ext
+#define X509_REVOKED_delete_ext GRPC_SHADOW_X509_REVOKED_delete_ext
+#define X509_REVOKED_dup GRPC_SHADOW_X509_REVOKED_dup
+#define X509_REVOKED_free GRPC_SHADOW_X509_REVOKED_free
+#define X509_REVOKED_get0_revocationDate GRPC_SHADOW_X509_REVOKED_get0_revocationDate
+#define X509_REVOKED_get0_serialNumber GRPC_SHADOW_X509_REVOKED_get0_serialNumber
+#define X509_REVOKED_get_ext GRPC_SHADOW_X509_REVOKED_get_ext
+#define X509_REVOKED_get_ext_by_critical GRPC_SHADOW_X509_REVOKED_get_ext_by_critical
+#define X509_REVOKED_get_ext_by_NID GRPC_SHADOW_X509_REVOKED_get_ext_by_NID
+#define X509_REVOKED_get_ext_by_OBJ GRPC_SHADOW_X509_REVOKED_get_ext_by_OBJ
+#define X509_REVOKED_get_ext_count GRPC_SHADOW_X509_REVOKED_get_ext_count
+#define X509_REVOKED_get_ext_d2i GRPC_SHADOW_X509_REVOKED_get_ext_d2i
+#define X509_REVOKED_it GRPC_SHADOW_X509_REVOKED_it
+#define X509_REVOKED_new GRPC_SHADOW_X509_REVOKED_new
+#define X509_REVOKED_set_revocationDate GRPC_SHADOW_X509_REVOKED_set_revocationDate
+#define X509_REVOKED_set_serialNumber GRPC_SHADOW_X509_REVOKED_set_serialNumber
+#define x509_rsa_ctx_to_pss GRPC_SHADOW_x509_rsa_ctx_to_pss
+#define x509_rsa_pss_to_ctx GRPC_SHADOW_x509_rsa_pss_to_ctx
+#define X509_set_ex_data GRPC_SHADOW_X509_set_ex_data
+#define X509_set_issuer_name GRPC_SHADOW_X509_set_issuer_name
+#define X509_set_notAfter GRPC_SHADOW_X509_set_notAfter
+#define X509_set_notBefore GRPC_SHADOW_X509_set_notBefore
+#define X509_set_pubkey GRPC_SHADOW_X509_set_pubkey
+#define X509_set_serialNumber GRPC_SHADOW_X509_set_serialNumber
+#define X509_set_subject_name GRPC_SHADOW_X509_set_subject_name
+#define X509_set_version GRPC_SHADOW_X509_set_version
+#define X509_SIG_free GRPC_SHADOW_X509_SIG_free
+#define X509_SIG_it GRPC_SHADOW_X509_SIG_it
+#define X509_sign GRPC_SHADOW_X509_sign
+#define X509_signature_dump GRPC_SHADOW_X509_signature_dump
+#define X509_signature_print GRPC_SHADOW_X509_signature_print
+#define X509_sign_ctx GRPC_SHADOW_X509_sign_ctx
+#define X509_SIG_new GRPC_SHADOW_X509_SIG_new
+#define X509_STORE_add_cert GRPC_SHADOW_X509_STORE_add_cert
+#define X509_STORE_add_crl GRPC_SHADOW_X509_STORE_add_crl
+#define X509_STORE_add_lookup GRPC_SHADOW_X509_STORE_add_lookup
+#define X509_STORE_CTX_cleanup GRPC_SHADOW_X509_STORE_CTX_cleanup
+#define X509_STORE_CTX_free GRPC_SHADOW_X509_STORE_CTX_free
+#define X509_STORE_CTX_get0_cert GRPC_SHADOW_X509_STORE_CTX_get0_cert
+#define X509_STORE_CTX_get0_current_crl GRPC_SHADOW_X509_STORE_CTX_get0_current_crl
+#define X509_STORE_CTX_get0_current_issuer GRPC_SHADOW_X509_STORE_CTX_get0_current_issuer
+#define X509_STORE_CTX_get0_param GRPC_SHADOW_X509_STORE_CTX_get0_param
+#define X509_STORE_CTX_get0_parent_ctx GRPC_SHADOW_X509_STORE_CTX_get0_parent_ctx
+#define X509_STORE_CTX_get0_policy_tree GRPC_SHADOW_X509_STORE_CTX_get0_policy_tree
+#define X509_STORE_CTX_get0_store GRPC_SHADOW_X509_STORE_CTX_get0_store
+#define X509_STORE_CTX_get0_untrusted GRPC_SHADOW_X509_STORE_CTX_get0_untrusted
+#define X509_STORE_CTX_get1_chain GRPC_SHADOW_X509_STORE_CTX_get1_chain
+#define X509_STORE_CTX_get1_issuer GRPC_SHADOW_X509_STORE_CTX_get1_issuer
+#define X509_STORE_CTX_get_chain GRPC_SHADOW_X509_STORE_CTX_get_chain
+#define X509_STORE_CTX_get_current_cert GRPC_SHADOW_X509_STORE_CTX_get_current_cert
+#define X509_STORE_CTX_get_error GRPC_SHADOW_X509_STORE_CTX_get_error
+#define X509_STORE_CTX_get_error_depth GRPC_SHADOW_X509_STORE_CTX_get_error_depth
+#define X509_STORE_CTX_get_ex_data GRPC_SHADOW_X509_STORE_CTX_get_ex_data
+#define X509_STORE_CTX_get_ex_new_index GRPC_SHADOW_X509_STORE_CTX_get_ex_new_index
+#define X509_STORE_CTX_get_explicit_policy GRPC_SHADOW_X509_STORE_CTX_get_explicit_policy
+#define X509_STORE_CTX_init GRPC_SHADOW_X509_STORE_CTX_init
+#define X509_STORE_CTX_new GRPC_SHADOW_X509_STORE_CTX_new
+#define X509_STORE_CTX_purpose_inherit GRPC_SHADOW_X509_STORE_CTX_purpose_inherit
+#define X509_STORE_CTX_set0_crls GRPC_SHADOW_X509_STORE_CTX_set0_crls
+#define X509_STORE_CTX_set0_param GRPC_SHADOW_X509_STORE_CTX_set0_param
+#define X509_STORE_CTX_set_cert GRPC_SHADOW_X509_STORE_CTX_set_cert
+#define X509_STORE_CTX_set_chain GRPC_SHADOW_X509_STORE_CTX_set_chain
+#define X509_STORE_CTX_set_default GRPC_SHADOW_X509_STORE_CTX_set_default
+#define X509_STORE_CTX_set_depth GRPC_SHADOW_X509_STORE_CTX_set_depth
+#define X509_STORE_CTX_set_error GRPC_SHADOW_X509_STORE_CTX_set_error
+#define X509_STORE_CTX_set_ex_data GRPC_SHADOW_X509_STORE_CTX_set_ex_data
+#define X509_STORE_CTX_set_flags GRPC_SHADOW_X509_STORE_CTX_set_flags
+#define X509_STORE_CTX_set_purpose GRPC_SHADOW_X509_STORE_CTX_set_purpose
+#define X509_STORE_CTX_set_time GRPC_SHADOW_X509_STORE_CTX_set_time
+#define X509_STORE_CTX_set_trust GRPC_SHADOW_X509_STORE_CTX_set_trust
+#define X509_STORE_CTX_set_verify_cb GRPC_SHADOW_X509_STORE_CTX_set_verify_cb
+#define X509_STORE_CTX_trusted_stack GRPC_SHADOW_X509_STORE_CTX_trusted_stack
+#define X509_STORE_CTX_zero GRPC_SHADOW_X509_STORE_CTX_zero
+#define X509_STORE_free GRPC_SHADOW_X509_STORE_free
+#define X509_STORE_get0_objects GRPC_SHADOW_X509_STORE_get0_objects
+#define X509_STORE_get0_param GRPC_SHADOW_X509_STORE_get0_param
+#define X509_STORE_get1_certs GRPC_SHADOW_X509_STORE_get1_certs
+#define X509_STORE_get1_crls GRPC_SHADOW_X509_STORE_get1_crls
+#define X509_STORE_get_by_subject GRPC_SHADOW_X509_STORE_get_by_subject
+#define X509_STORE_get_cert_crl GRPC_SHADOW_X509_STORE_get_cert_crl
+#define X509_STORE_get_check_crl GRPC_SHADOW_X509_STORE_get_check_crl
+#define X509_STORE_get_check_issued GRPC_SHADOW_X509_STORE_get_check_issued
+#define X509_STORE_get_check_revocation GRPC_SHADOW_X509_STORE_get_check_revocation
+#define X509_STORE_get_cleanup GRPC_SHADOW_X509_STORE_get_cleanup
+#define X509_STORE_get_get_crl GRPC_SHADOW_X509_STORE_get_get_crl
+#define X509_STORE_get_get_issuer GRPC_SHADOW_X509_STORE_get_get_issuer
+#define X509_STORE_get_lookup_certs GRPC_SHADOW_X509_STORE_get_lookup_certs
+#define X509_STORE_get_lookup_crls GRPC_SHADOW_X509_STORE_get_lookup_crls
+#define X509_STORE_get_verify GRPC_SHADOW_X509_STORE_get_verify
+#define X509_STORE_get_verify_cb GRPC_SHADOW_X509_STORE_get_verify_cb
+#define X509_STORE_load_locations GRPC_SHADOW_X509_STORE_load_locations
+#define X509_STORE_new GRPC_SHADOW_X509_STORE_new
+#define X509_STORE_set0_additional_untrusted GRPC_SHADOW_X509_STORE_set0_additional_untrusted
+#define X509_STORE_set1_param GRPC_SHADOW_X509_STORE_set1_param
+#define X509_STORE_set_cert_crl GRPC_SHADOW_X509_STORE_set_cert_crl
+#define X509_STORE_set_check_crl GRPC_SHADOW_X509_STORE_set_check_crl
+#define X509_STORE_set_check_issued GRPC_SHADOW_X509_STORE_set_check_issued
+#define X509_STORE_set_check_revocation GRPC_SHADOW_X509_STORE_set_check_revocation
+#define X509_STORE_set_cleanup GRPC_SHADOW_X509_STORE_set_cleanup
+#define X509_STORE_set_default_paths GRPC_SHADOW_X509_STORE_set_default_paths
+#define X509_STORE_set_depth GRPC_SHADOW_X509_STORE_set_depth
+#define X509_STORE_set_flags GRPC_SHADOW_X509_STORE_set_flags
+#define X509_STORE_set_get_crl GRPC_SHADOW_X509_STORE_set_get_crl
+#define X509_STORE_set_get_issuer GRPC_SHADOW_X509_STORE_set_get_issuer
+#define X509_STORE_set_lookup_certs GRPC_SHADOW_X509_STORE_set_lookup_certs
+#define X509_STORE_set_lookup_crls GRPC_SHADOW_X509_STORE_set_lookup_crls
+#define X509_STORE_set_purpose GRPC_SHADOW_X509_STORE_set_purpose
+#define X509_STORE_set_trust GRPC_SHADOW_X509_STORE_set_trust
+#define X509_STORE_set_verify GRPC_SHADOW_X509_STORE_set_verify
+#define X509_STORE_set_verify_cb GRPC_SHADOW_X509_STORE_set_verify_cb
+#define X509_STORE_up_ref GRPC_SHADOW_X509_STORE_up_ref
+#define X509_subject_name_cmp GRPC_SHADOW_X509_subject_name_cmp
+#define X509_subject_name_hash GRPC_SHADOW_X509_subject_name_hash
+#define X509_subject_name_hash_old GRPC_SHADOW_X509_subject_name_hash_old
+#define X509_supported_extension GRPC_SHADOW_X509_supported_extension
+#define X509_time_adj GRPC_SHADOW_X509_time_adj
+#define X509_time_adj_ex GRPC_SHADOW_X509_time_adj_ex
+#define X509_to_X509_REQ GRPC_SHADOW_X509_to_X509_REQ
+#define X509_TRUST_add GRPC_SHADOW_X509_TRUST_add
+#define X509_TRUST_cleanup GRPC_SHADOW_X509_TRUST_cleanup
+#define X509_trust_clear GRPC_SHADOW_X509_trust_clear
+#define X509_TRUST_get0 GRPC_SHADOW_X509_TRUST_get0
+#define X509_TRUST_get0_name GRPC_SHADOW_X509_TRUST_get0_name
+#define X509_TRUST_get_by_id GRPC_SHADOW_X509_TRUST_get_by_id
+#define X509_TRUST_get_count GRPC_SHADOW_X509_TRUST_get_count
+#define X509_TRUST_get_flags GRPC_SHADOW_X509_TRUST_get_flags
+#define X509_TRUST_get_trust GRPC_SHADOW_X509_TRUST_get_trust
+#define X509_TRUST_set GRPC_SHADOW_X509_TRUST_set
+#define X509_TRUST_set_default GRPC_SHADOW_X509_TRUST_set_default
+#define X509_up_ref GRPC_SHADOW_X509_up_ref
+#define X509V3_add1_i2d GRPC_SHADOW_X509V3_add1_i2d
+#define X509v3_add_ext GRPC_SHADOW_X509v3_add_ext
+#define X509V3_add_standard_extensions GRPC_SHADOW_X509V3_add_standard_extensions
+#define X509V3_add_value GRPC_SHADOW_X509V3_add_value
+#define X509V3_add_value_bool GRPC_SHADOW_X509V3_add_value_bool
+#define X509V3_add_value_bool_nf GRPC_SHADOW_X509V3_add_value_bool_nf
+#define X509V3_add_value_int GRPC_SHADOW_X509V3_add_value_int
+#define X509V3_add_value_uchar GRPC_SHADOW_X509V3_add_value_uchar
+#define x509v3_bytes_to_hex GRPC_SHADOW_x509v3_bytes_to_hex
+#define X509V3_conf_free GRPC_SHADOW_X509V3_conf_free
+#define X509v3_delete_ext GRPC_SHADOW_X509v3_delete_ext
+#define X509V3_EXT_add GRPC_SHADOW_X509V3_EXT_add
+#define X509V3_EXT_add_alias GRPC_SHADOW_X509V3_EXT_add_alias
+#define X509V3_EXT_add_list GRPC_SHADOW_X509V3_EXT_add_list
+#define X509V3_EXT_add_nconf GRPC_SHADOW_X509V3_EXT_add_nconf
+#define X509V3_EXT_add_nconf_sk GRPC_SHADOW_X509V3_EXT_add_nconf_sk
+#define X509V3_EXT_cleanup GRPC_SHADOW_X509V3_EXT_cleanup
+#define X509V3_EXT_CRL_add_nconf GRPC_SHADOW_X509V3_EXT_CRL_add_nconf
+#define X509V3_EXT_d2i GRPC_SHADOW_X509V3_EXT_d2i
+#define X509V3_extensions_print GRPC_SHADOW_X509V3_extensions_print
+#define X509V3_EXT_free GRPC_SHADOW_X509V3_EXT_free
+#define X509V3_EXT_get GRPC_SHADOW_X509V3_EXT_get
+#define X509V3_EXT_get_nid GRPC_SHADOW_X509V3_EXT_get_nid
+#define X509V3_EXT_i2d GRPC_SHADOW_X509V3_EXT_i2d
+#define X509V3_EXT_nconf GRPC_SHADOW_X509V3_EXT_nconf
+#define X509V3_EXT_nconf_nid GRPC_SHADOW_X509V3_EXT_nconf_nid
+#define X509V3_EXT_print GRPC_SHADOW_X509V3_EXT_print
+#define X509V3_EXT_print_fp GRPC_SHADOW_X509V3_EXT_print_fp
+#define X509V3_EXT_REQ_add_nconf GRPC_SHADOW_X509V3_EXT_REQ_add_nconf
+#define X509V3_EXT_val_prn GRPC_SHADOW_X509V3_EXT_val_prn
+#define X509V3_get_d2i GRPC_SHADOW_X509V3_get_d2i
+#define X509v3_get_ext GRPC_SHADOW_X509v3_get_ext
+#define X509v3_get_ext_by_critical GRPC_SHADOW_X509v3_get_ext_by_critical
+#define X509v3_get_ext_by_NID GRPC_SHADOW_X509v3_get_ext_by_NID
+#define X509v3_get_ext_by_OBJ GRPC_SHADOW_X509v3_get_ext_by_OBJ
+#define X509v3_get_ext_count GRPC_SHADOW_X509v3_get_ext_count
+#define X509V3_get_section GRPC_SHADOW_X509V3_get_section
+#define X509V3_get_string GRPC_SHADOW_X509V3_get_string
+#define X509V3_get_value_bool GRPC_SHADOW_X509V3_get_value_bool
+#define X509V3_get_value_int GRPC_SHADOW_X509V3_get_value_int
+#define x509v3_hex_to_bytes GRPC_SHADOW_x509v3_hex_to_bytes
+#define x509v3_looks_like_dns_name GRPC_SHADOW_x509v3_looks_like_dns_name
+#define x509v3_name_cmp GRPC_SHADOW_x509v3_name_cmp
+#define X509V3_NAME_from_section GRPC_SHADOW_X509V3_NAME_from_section
+#define X509V3_parse_list GRPC_SHADOW_X509V3_parse_list
+#define X509V3_section_free GRPC_SHADOW_X509V3_section_free
+#define X509V3_set_ctx GRPC_SHADOW_X509V3_set_ctx
+#define X509V3_set_nconf GRPC_SHADOW_X509V3_set_nconf
+#define X509V3_string_free GRPC_SHADOW_X509V3_string_free
+#define X509_VAL_free GRPC_SHADOW_X509_VAL_free
+#define X509_VAL_it GRPC_SHADOW_X509_VAL_it
+#define X509_VAL_new GRPC_SHADOW_X509_VAL_new
+#define X509_verify GRPC_SHADOW_X509_verify
+#define X509_verify_cert GRPC_SHADOW_X509_verify_cert
+#define X509_verify_cert_error_string GRPC_SHADOW_X509_verify_cert_error_string
+#define X509_VERIFY_PARAM_add0_policy GRPC_SHADOW_X509_VERIFY_PARAM_add0_policy
+#define X509_VERIFY_PARAM_add0_table GRPC_SHADOW_X509_VERIFY_PARAM_add0_table
+#define X509_VERIFY_PARAM_add1_host GRPC_SHADOW_X509_VERIFY_PARAM_add1_host
+#define X509_VERIFY_PARAM_clear_flags GRPC_SHADOW_X509_VERIFY_PARAM_clear_flags
+#define X509_VERIFY_PARAM_free GRPC_SHADOW_X509_VERIFY_PARAM_free
+#define X509_VERIFY_PARAM_get0 GRPC_SHADOW_X509_VERIFY_PARAM_get0
+#define X509_VERIFY_PARAM_get0_name GRPC_SHADOW_X509_VERIFY_PARAM_get0_name
+#define X509_VERIFY_PARAM_get0_peername GRPC_SHADOW_X509_VERIFY_PARAM_get0_peername
+#define X509_VERIFY_PARAM_get_count GRPC_SHADOW_X509_VERIFY_PARAM_get_count
+#define X509_VERIFY_PARAM_get_depth GRPC_SHADOW_X509_VERIFY_PARAM_get_depth
+#define X509_VERIFY_PARAM_get_flags GRPC_SHADOW_X509_VERIFY_PARAM_get_flags
+#define X509_VERIFY_PARAM_inherit GRPC_SHADOW_X509_VERIFY_PARAM_inherit
+#define X509_VERIFY_PARAM_lookup GRPC_SHADOW_X509_VERIFY_PARAM_lookup
+#define X509_VERIFY_PARAM_new GRPC_SHADOW_X509_VERIFY_PARAM_new
+#define X509_VERIFY_PARAM_set1 GRPC_SHADOW_X509_VERIFY_PARAM_set1
+#define X509_VERIFY_PARAM_set1_email GRPC_SHADOW_X509_VERIFY_PARAM_set1_email
+#define X509_VERIFY_PARAM_set1_host GRPC_SHADOW_X509_VERIFY_PARAM_set1_host
+#define X509_VERIFY_PARAM_set1_ip GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip
+#define X509_VERIFY_PARAM_set1_ip_asc GRPC_SHADOW_X509_VERIFY_PARAM_set1_ip_asc
+#define X509_VERIFY_PARAM_set1_name GRPC_SHADOW_X509_VERIFY_PARAM_set1_name
+#define X509_VERIFY_PARAM_set1_policies GRPC_SHADOW_X509_VERIFY_PARAM_set1_policies
+#define X509_VERIFY_PARAM_set_depth GRPC_SHADOW_X509_VERIFY_PARAM_set_depth
+#define X509_VERIFY_PARAM_set_flags GRPC_SHADOW_X509_VERIFY_PARAM_set_flags
+#define X509_VERIFY_PARAM_set_hostflags GRPC_SHADOW_X509_VERIFY_PARAM_set_hostflags
+#define X509_VERIFY_PARAM_set_purpose GRPC_SHADOW_X509_VERIFY_PARAM_set_purpose
+#define X509_VERIFY_PARAM_set_time GRPC_SHADOW_X509_VERIFY_PARAM_set_time
+#define X509_VERIFY_PARAM_set_trust GRPC_SHADOW_X509_VERIFY_PARAM_set_trust
+#define X509_VERIFY_PARAM_table_cleanup GRPC_SHADOW_X509_VERIFY_PARAM_table_cleanup
+
+#endif /* GRPC_SHADOW_BORINGSSL_SYMBOLS */
+
+#endif /* GRPC_CORE_TSI_GRPC_SHADOW_BORINGSSL_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.cc
new file mode 100644
index 0000000..f7e004f
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.cc	
@@ -0,0 +1,211 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/local_transport_security.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/tsi/transport_security_grpc.h"
+
+/* Main struct for local TSI zero-copy frame protector. */
+typedef struct local_zero_copy_grpc_protector {
+  tsi_zero_copy_grpc_protector base;
+} local_zero_copy_grpc_protector;
+
+/* Main struct for local TSI handshaker result. */
+typedef struct local_tsi_handshaker_result {
+  tsi_handshaker_result base;
+  bool is_client;
+} local_tsi_handshaker_result;
+
+/* Main struct for local TSI handshaker. */
+typedef struct local_tsi_handshaker {
+  tsi_handshaker base;
+  bool is_client;
+} local_tsi_handshaker;
+
+/* --- tsi_zero_copy_grpc_protector methods implementation. --- */
+
+static tsi_result local_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid nullptr arguments to zero-copy grpc protect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  grpc_slice_buffer_move_into(unprotected_slices, protected_slices);
+  return TSI_OK;
+}
+
+static tsi_result local_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  if (self == nullptr || unprotected_slices == nullptr ||
+      protected_slices == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid nullptr arguments to zero-copy grpc unprotect.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  grpc_slice_buffer_move_into(protected_slices, unprotected_slices);
+  return TSI_OK;
+}
+
+static void local_zero_copy_grpc_protector_destroy(
+    tsi_zero_copy_grpc_protector* self) {
+  gpr_free(self);
+}
+
+static const tsi_zero_copy_grpc_protector_vtable
+    local_zero_copy_grpc_protector_vtable = {
+        local_zero_copy_grpc_protector_protect,
+        local_zero_copy_grpc_protector_unprotect,
+        local_zero_copy_grpc_protector_destroy,
+        nullptr /* local_zero_copy_grpc_protector_max_frame_size */};
+
+tsi_result local_zero_copy_grpc_protector_create(
+    tsi_zero_copy_grpc_protector** protector) {
+  if (grpc_core::ExecCtx::Get() == nullptr || protector == nullptr) {
+    gpr_log(
+        GPR_ERROR,
+        "Invalid nullptr arguments to local_zero_copy_grpc_protector create.");
+    return TSI_INVALID_ARGUMENT;
+  }
+  local_zero_copy_grpc_protector* impl =
+      static_cast<local_zero_copy_grpc_protector*>(gpr_zalloc(sizeof(*impl)));
+  impl->base.vtable = &local_zero_copy_grpc_protector_vtable;
+  *protector = &impl->base;
+  return TSI_OK;
+}
+
+/* --- tsi_handshaker_result methods implementation. --- */
+
+static tsi_result handshaker_result_extract_peer(
+    const tsi_handshaker_result* /*self*/, tsi_peer* /*peer*/) {
+  return TSI_OK;
+}
+
+static tsi_result handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* self,
+    size_t* /*max_output_protected_frame_size*/,
+    tsi_zero_copy_grpc_protector** protector) {
+  if (self == nullptr || protector == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Invalid arguments to create_zero_copy_grpc_protector()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_result ok = local_zero_copy_grpc_protector_create(protector);
+  if (ok != TSI_OK) {
+    gpr_log(GPR_ERROR, "Failed to create zero-copy grpc protector");
+  }
+  return ok;
+}
+
+static void handshaker_result_destroy(tsi_handshaker_result* self) {
+  if (self == nullptr) {
+    return;
+  }
+  local_tsi_handshaker_result* result =
+      reinterpret_cast<local_tsi_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  gpr_free(result);
+}
+
+static const tsi_handshaker_result_vtable result_vtable = {
+    handshaker_result_extract_peer,
+    handshaker_result_create_zero_copy_grpc_protector,
+    nullptr, /* handshaker_result_create_frame_protector */
+    nullptr, /* handshaker_result_get_unused_bytes */
+    handshaker_result_destroy};
+
+static tsi_result create_handshaker_result(bool is_client,
+                                           tsi_handshaker_result** self) {
+  if (self == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to create_handshaker_result()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  local_tsi_handshaker_result* result =
+      static_cast<local_tsi_handshaker_result*>(gpr_zalloc(sizeof(*result)));
+  result->is_client = is_client;
+  result->base.vtable = &result_vtable;
+  *self = &result->base;
+  return TSI_OK;
+}
+
+/* --- tsi_handshaker methods implementation. --- */
+
+static tsi_result handshaker_next(
+    tsi_handshaker* self, const unsigned char* /*received_bytes*/,
+    size_t /*received_bytes_size*/, const unsigned char** /*bytes_to_send*/,
+    size_t* bytes_to_send_size, tsi_handshaker_result** result,
+    tsi_handshaker_on_next_done_cb /*cb*/, void* /*user_data*/) {
+  if (self == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to handshaker_next()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* Note that there is no interaction between TSI peers, and all operations are
+   * local.
+   */
+  local_tsi_handshaker* handshaker =
+      reinterpret_cast<local_tsi_handshaker*>(self);
+  *bytes_to_send_size = 0;
+  create_handshaker_result(handshaker->is_client, result);
+  return TSI_OK;
+}
+
+static void handshaker_destroy(tsi_handshaker* self) {
+  if (self == nullptr) {
+    return;
+  }
+  local_tsi_handshaker* handshaker =
+      reinterpret_cast<local_tsi_handshaker*>(self);
+  gpr_free(handshaker);
+}
+
+static const tsi_handshaker_vtable handshaker_vtable = {
+    nullptr, /* get_bytes_to_send_to_peer -- deprecated */
+    nullptr, /* process_bytes_from_peer   -- deprecated */
+    nullptr, /* get_result                -- deprecated */
+    nullptr, /* extract_peer              -- deprecated */
+    nullptr, /* create_frame_protector    -- deprecated */
+    handshaker_destroy,
+    handshaker_next,
+    nullptr, /* shutdown */
+};
+
+tsi_result local_tsi_handshaker_create(bool is_client, tsi_handshaker** self) {
+  if (self == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid arguments to local_tsi_handshaker_create()");
+    return TSI_INVALID_ARGUMENT;
+  }
+  local_tsi_handshaker* handshaker =
+      static_cast<local_tsi_handshaker*>(gpr_zalloc(sizeof(*handshaker)));
+  handshaker->is_client = is_client;
+  handshaker->base.vtable = &handshaker_vtable;
+  *self = &handshaker->base;
+  return TSI_OK;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.h
new file mode 100644
index 0000000..17213ec
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/local_transport_security.h	
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+#define TSI_LOCAL_NUM_OF_PEER_PROPERTIES 1
+#define TSI_LOCAL_PROCESS_ID_PEER_PROPERTY "process_id"
+
+/**
+ * Main struct for local TSI handshaker. All APIs in the header are
+ * thread-comptabile.
+ */
+typedef struct local_tsi_handshaker local_tsi_handshaker;
+
+/**
+ * This method creates a local TSI handshaker instance.
+ *
+ * - is_client: boolean value indicating if the handshaker is used at the client
+ *   (is_client = true) or server (is_client = false) side. The parameter is
+ *   added for future extension.
+ * - self: address of local TSI handshaker instance to be returned from the
+ *   method.
+ *
+ * It returns TSI_OK on success and an error status code on failure.
+ */
+tsi_result local_tsi_handshaker_create(bool is_client, tsi_handshaker** self);
+
+#endif /* GRPC_CORE_TSI_LOCAL_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session.h
new file mode 100644
index 0000000..4cbe0d5
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session.h	
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H
+#define GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+}
+
+#include "src/core/lib/gprpp/ref_counted.h"
+
+// The main purpose of code here is to provide means to cache SSL sessions
+// in a way that they can be shared between connections.
+//
+// SSL_SESSION stands for single instance of session and is not generally safe
+// to share between SSL contexts with different lifetimes. It happens because
+// not all SSL implementations guarantee immutability of SSL_SESSION object.
+// See SSL_SESSION documentation in BoringSSL and OpenSSL for more details.
+
+namespace tsi {
+
+struct SslSessionDeleter {
+  void operator()(SSL_SESSION* session) { SSL_SESSION_free(session); }
+};
+
+typedef std::unique_ptr<SSL_SESSION, SslSessionDeleter> SslSessionPtr;
+
+/// SslCachedSession is an immutable thread-safe storage for single session
+/// representation. It provides means to share SSL session data (e.g. TLS
+/// ticket) between encrypted connections regardless of SSL context lifetime.
+class SslCachedSession {
+ public:
+  // Not copyable nor movable.
+  SslCachedSession(const SslCachedSession&) = delete;
+  SslCachedSession& operator=(const SslCachedSession&) = delete;
+
+  /// Create single cached instance of \a session.
+  static std::unique_ptr<SslCachedSession> Create(SslSessionPtr session);
+
+  virtual ~SslCachedSession() = default;
+
+  /// Returns a copy of previously cached session.
+  virtual SslSessionPtr CopySession() const = 0;
+
+ protected:
+  SslCachedSession() = default;
+};
+
+}  // namespace tsi
+
+#endif /* GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_boringssl.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_boringssl.cc
new file mode 100644
index 0000000..612ecff
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_boringssl.cc	
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/ssl/session_cache/ssl_session.h"
+
+#ifdef OPENSSL_IS_BORINGSSL
+
+// BoringSSL allows SSL_SESSION to outlive SSL and SSL_CTX objects which are
+// re-created by gRPC on every certificate rotation or subchannel creation.
+// BoringSSL guarantees that SSL_SESSION is immutable so it's safe to share
+// the same original session object between different threads and connections.
+
+namespace tsi {
+namespace {
+
+class BoringSslCachedSession : public SslCachedSession {
+ public:
+  BoringSslCachedSession(SslSessionPtr session)
+      : session_(std::move(session)) {}
+
+  SslSessionPtr CopySession() const override {
+    // SslSessionPtr will dereference on destruction.
+    SSL_SESSION_up_ref(session_.get());
+    return SslSessionPtr(session_.get());
+  }
+
+ private:
+  SslSessionPtr session_;
+};
+
+}  // namespace
+
+std::unique_ptr<SslCachedSession> SslCachedSession::Create(
+    SslSessionPtr session) {
+  return absl::make_unique<BoringSslCachedSession>(std::move(session));
+}
+
+}  // namespace tsi
+
+#endif /* OPENSSL_IS_BORINGSSL */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.cc
new file mode 100644
index 0000000..6da4fb4
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.cc	
@@ -0,0 +1,214 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/sync.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/ssl/session_cache/ssl_session.h"
+#include "src/core/tsi/ssl/session_cache/ssl_session_cache.h"
+
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+namespace tsi {
+
+static void cache_key_avl_destroy(void* /*key*/, void* /*unused*/) {}
+
+static void* cache_key_avl_copy(void* key, void* /*unused*/) { return key; }
+
+static long cache_key_avl_compare(void* key1, void* key2, void* /*unused*/) {
+  return grpc_slice_cmp(*static_cast<grpc_slice*>(key1),
+                        *static_cast<grpc_slice*>(key2));
+}
+
+static void cache_value_avl_destroy(void* /*value*/, void* /*unused*/) {}
+
+static void* cache_value_avl_copy(void* value, void* /*unused*/) {
+  return value;
+}
+
+// AVL only stores pointers, ownership belonges to the linked list.
+static const grpc_avl_vtable cache_avl_vtable = {
+    cache_key_avl_destroy,   cache_key_avl_copy,   cache_key_avl_compare,
+    cache_value_avl_destroy, cache_value_avl_copy,
+};
+
+/// Node for single cached session.
+class SslSessionLRUCache::Node {
+ public:
+  Node(const grpc_slice& key, SslSessionPtr session) : key_(key) {
+    SetSession(std::move(session));
+  }
+
+  ~Node() { grpc_slice_unref_internal(key_); }
+
+  // Not copyable nor movable.
+  Node(const Node&) = delete;
+  Node& operator=(const Node&) = delete;
+
+  void* AvlKey() { return &key_; }
+
+  /// Returns a copy of the node's cache session.
+  SslSessionPtr CopySession() const { return session_->CopySession(); }
+
+  /// Set the \a session (which is moved) for the node.
+  void SetSession(SslSessionPtr session) {
+    session_ = SslCachedSession::Create(std::move(session));
+  }
+
+ private:
+  friend class SslSessionLRUCache;
+
+  grpc_slice key_;
+  std::unique_ptr<SslCachedSession> session_;
+
+  Node* next_ = nullptr;
+  Node* prev_ = nullptr;
+};
+
+SslSessionLRUCache::SslSessionLRUCache(size_t capacity) : capacity_(capacity) {
+  GPR_ASSERT(capacity > 0);
+  gpr_mu_init(&lock_);
+  entry_by_key_ = grpc_avl_create(&cache_avl_vtable);
+}
+
+SslSessionLRUCache::~SslSessionLRUCache() {
+  Node* node = use_order_list_head_;
+  while (node) {
+    Node* next = node->next_;
+    delete node;
+    node = next;
+  }
+  grpc_avl_unref(entry_by_key_, nullptr);
+  gpr_mu_destroy(&lock_);
+}
+
+size_t SslSessionLRUCache::Size() {
+  grpc_core::MutexLock lock(&lock_);
+  return use_order_list_size_;
+}
+
+SslSessionLRUCache::Node* SslSessionLRUCache::FindLocked(
+    const grpc_slice& key) {
+  void* value =
+      grpc_avl_get(entry_by_key_, const_cast<grpc_slice*>(&key), nullptr);
+  if (value == nullptr) {
+    return nullptr;
+  }
+  Node* node = static_cast<Node*>(value);
+  // Move to the beginning.
+  Remove(node);
+  PushFront(node);
+  AssertInvariants();
+  return node;
+}
+
+void SslSessionLRUCache::Put(const char* key, SslSessionPtr session) {
+  grpc_core::MutexLock lock(&lock_);
+  Node* node = FindLocked(grpc_slice_from_static_string(key));
+  if (node != nullptr) {
+    node->SetSession(std::move(session));
+    return;
+  }
+  grpc_slice key_slice = grpc_slice_from_copied_string(key);
+  node = new Node(key_slice, std::move(session));
+  PushFront(node);
+  entry_by_key_ = grpc_avl_add(entry_by_key_, node->AvlKey(), node, nullptr);
+  AssertInvariants();
+  if (use_order_list_size_ > capacity_) {
+    GPR_ASSERT(use_order_list_tail_);
+    node = use_order_list_tail_;
+    Remove(node);
+    // Order matters, key is destroyed after deleting node.
+    entry_by_key_ = grpc_avl_remove(entry_by_key_, node->AvlKey(), nullptr);
+    delete node;
+    AssertInvariants();
+  }
+}
+
+SslSessionPtr SslSessionLRUCache::Get(const char* key) {
+  grpc_core::MutexLock lock(&lock_);
+  // Key is only used for lookups.
+  grpc_slice key_slice = grpc_slice_from_static_string(key);
+  Node* node = FindLocked(key_slice);
+  if (node == nullptr) {
+    return nullptr;
+  }
+  return node->CopySession();
+}
+
+void SslSessionLRUCache::Remove(SslSessionLRUCache::Node* node) {
+  if (node->prev_ == nullptr) {
+    use_order_list_head_ = node->next_;
+  } else {
+    node->prev_->next_ = node->next_;
+  }
+  if (node->next_ == nullptr) {
+    use_order_list_tail_ = node->prev_;
+  } else {
+    node->next_->prev_ = node->prev_;
+  }
+  GPR_ASSERT(use_order_list_size_ >= 1);
+  use_order_list_size_--;
+}
+
+void SslSessionLRUCache::PushFront(SslSessionLRUCache::Node* node) {
+  if (use_order_list_head_ == nullptr) {
+    use_order_list_head_ = node;
+    use_order_list_tail_ = node;
+    node->next_ = nullptr;
+    node->prev_ = nullptr;
+  } else {
+    node->next_ = use_order_list_head_;
+    node->next_->prev_ = node;
+    use_order_list_head_ = node;
+    node->prev_ = nullptr;
+  }
+  use_order_list_size_++;
+}
+
+#ifndef NDEBUG
+static size_t calculate_tree_size(grpc_avl_node* node) {
+  if (node == nullptr) {
+    return 0;
+  }
+  return 1 + calculate_tree_size(node->left) + calculate_tree_size(node->right);
+}
+
+void SslSessionLRUCache::AssertInvariants() {
+  size_t size = 0;
+  Node* prev = nullptr;
+  Node* current = use_order_list_head_;
+  while (current != nullptr) {
+    size++;
+    GPR_ASSERT(current->prev_ == prev);
+    void* node = grpc_avl_get(entry_by_key_, current->AvlKey(), nullptr);
+    GPR_ASSERT(node == current);
+    prev = current;
+    current = current->next_;
+  }
+  GPR_ASSERT(prev == use_order_list_tail_);
+  GPR_ASSERT(size == use_order_list_size_);
+  GPR_ASSERT(calculate_tree_size(entry_by_key_.root) == use_order_list_size_);
+}
+#else
+void SslSessionLRUCache::AssertInvariants() {}
+#endif
+
+}  // namespace tsi
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.h
new file mode 100644
index 0000000..1235370
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_cache.h	
@@ -0,0 +1,96 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H
+#define GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include <grpc/slice.h>
+#include <grpc/support/sync.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+}
+
+#include "src/core/lib/avl/avl.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/gprpp/ref_counted.h"
+#include "src/core/tsi/ssl/session_cache/ssl_session.h"
+
+/// Cache for SSL sessions for sessions resumption.
+///
+/// Older sessions may be evicted from the cache using LRU policy if capacity
+/// limit is hit. All sessions are associated with some key, usually server
+/// name. Note that servers are required to share session ticket encryption keys
+/// in order for cache to be effective.
+///
+/// This class is thread safe.
+
+namespace tsi {
+
+class SslSessionLRUCache : public grpc_core::RefCounted<SslSessionLRUCache> {
+ public:
+  /// Create new LRU cache with the given capacity.
+  static grpc_core::RefCountedPtr<SslSessionLRUCache> Create(size_t capacity) {
+    return grpc_core::MakeRefCounted<SslSessionLRUCache>(capacity);
+  }
+
+  // Use Create function instead of using this directly.
+  explicit SslSessionLRUCache(size_t capacity);
+  ~SslSessionLRUCache();
+
+  // Not copyable nor movable.
+  SslSessionLRUCache(const SslSessionLRUCache&) = delete;
+  SslSessionLRUCache& operator=(const SslSessionLRUCache&) = delete;
+
+  /// Returns current number of sessions in the cache.
+  size_t Size();
+  /// Add \a session in the cache using \a key. This operation may discard older
+  /// sessions.
+  void Put(const char* key, SslSessionPtr session);
+  /// Returns the session from the cache associated with \a key or null if not
+  /// found.
+  SslSessionPtr Get(const char* key);
+
+ private:
+  class Node;
+
+  Node* FindLocked(const grpc_slice& key);
+  void Remove(Node* node);
+  void PushFront(Node* node);
+  void AssertInvariants();
+
+  gpr_mu lock_;
+  size_t capacity_;
+
+  Node* use_order_list_head_ = nullptr;
+  Node* use_order_list_tail_ = nullptr;
+  size_t use_order_list_size_ = 0;
+  grpc_avl entry_by_key_;
+};
+
+}  // namespace tsi
+
+#endif /* GRPC_CORE_TSI_SSL_SESSION_CACHE_SSL_SESSION_CACHE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_openssl.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_openssl.cc
new file mode 100644
index 0000000..f45205c
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl/session_cache/ssl_session_openssl.cc	
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/ssl/session_cache/ssl_session.h"
+
+#include <grpc/support/log.h>
+
+#ifndef OPENSSL_IS_BORINGSSL
+
+// OpenSSL invalidates SSL_SESSION on SSL destruction making it pointless
+// to cache sessions. The workaround is to serialize (relatively expensive)
+// session into binary blob and re-create it from blob on every handshake.
+// Note that it's safe to keep serialized session outside of SSL lifetime
+// as openssl performs all necessary validation while attempting to use a
+// session and creates a new one if something is wrong (e.g. server changed
+// set of allowed codecs).
+
+namespace tsi {
+namespace {
+
+class OpenSslCachedSession : public SslCachedSession {
+ public:
+  OpenSslCachedSession(SslSessionPtr session) {
+    int size = i2d_SSL_SESSION(session.get(), nullptr);
+    GPR_ASSERT(size > 0);
+    grpc_slice slice = grpc_slice_malloc(size_t(size));
+    unsigned char* start = GRPC_SLICE_START_PTR(slice);
+    int second_size = i2d_SSL_SESSION(session.get(), &start);
+    GPR_ASSERT(size == second_size);
+    serialized_session_ = slice;
+  }
+
+  virtual ~OpenSslCachedSession() { grpc_slice_unref(serialized_session_); }
+
+  SslSessionPtr CopySession() const override {
+    const unsigned char* data = GRPC_SLICE_START_PTR(serialized_session_);
+    size_t length = GRPC_SLICE_LENGTH(serialized_session_);
+    SSL_SESSION* session = d2i_SSL_SESSION(nullptr, &data, length);
+    if (session == nullptr) {
+      return SslSessionPtr();
+    }
+    return SslSessionPtr(session);
+  }
+
+ private:
+  grpc_slice serialized_session_;
+};
+
+}  // namespace
+
+std::unique_ptr<SslCachedSession> SslCachedSession::Create(
+    SslSessionPtr session) {
+  return absl::make_unique<OpenSslCachedSession>(std::move(session));
+}
+
+}  // namespace tsi
+
+#endif /* OPENSSL_IS_BORINGSSL */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.cc
new file mode 100644
index 0000000..855a86a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.cc	
@@ -0,0 +1,2139 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#include "src/core/tsi/ssl_transport_security.h"
+
+#include <limits.h>
+#include <string.h>
+
+/* TODO(jboeuf): refactor inet_ntop into a portability header. */
+/* Note: for whomever reads this and tries to refactor this, this
+   can't be in grpc, it has to be in gpr. */
+#ifdef GPR_WINDOWS
+#include <ws2tcpip.h>
+#else
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#endif
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd_id.h>
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/bio.h>
+#else
+  #include <openssl/bio.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/crypto.h>
+#else
+  #include <openssl/crypto.h>
+#endif /* For OPENSSL_free */
+#if COCOAPODS==1
+  #include <openssl_grpc/engine.h>
+#else
+  #include <openssl/engine.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/err.h>
+#else
+  #include <openssl/err.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/x509.h>
+#else
+  #include <openssl/x509.h>
+#endif
+#if COCOAPODS==1
+  #include <openssl_grpc/x509v3.h>
+#else
+  #include <openssl/x509v3.h>
+#endif
+}
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/tsi/ssl/session_cache/ssl_session_cache.h"
+#include "src/core/tsi/ssl_types.h"
+#include "src/core/tsi/transport_security.h"
+
+/* --- Constants. ---*/
+
+#define TSI_SSL_MAX_PROTECTED_FRAME_SIZE_UPPER_BOUND 16384
+#define TSI_SSL_MAX_PROTECTED_FRAME_SIZE_LOWER_BOUND 1024
+#define TSI_SSL_HANDSHAKER_OUTGOING_BUFFER_INITIAL_SIZE 1024
+
+/* Putting a macro like this and littering the source file with #if is really
+   bad practice.
+   TODO(jboeuf): refactor all the #if / #endif in a separate module. */
+#ifndef TSI_OPENSSL_ALPN_SUPPORT
+#define TSI_OPENSSL_ALPN_SUPPORT 1
+#endif
+
+/* TODO(jboeuf): I have not found a way to get this number dynamically from the
+   SSL structure. This is what we would ultimately want though... */
+#define TSI_SSL_MAX_PROTECTION_OVERHEAD 100
+
+/* --- Structure definitions. ---*/
+
+struct tsi_ssl_root_certs_store {
+  X509_STORE* store;
+};
+
+struct tsi_ssl_handshaker_factory {
+  const tsi_ssl_handshaker_factory_vtable* vtable;
+  gpr_refcount refcount;
+};
+
+struct tsi_ssl_client_handshaker_factory {
+  tsi_ssl_handshaker_factory base;
+  SSL_CTX* ssl_context;
+  unsigned char* alpn_protocol_list;
+  size_t alpn_protocol_list_length;
+  grpc_core::RefCountedPtr<tsi::SslSessionLRUCache> session_cache;
+};
+
+struct tsi_ssl_server_handshaker_factory {
+  /* Several contexts to support SNI.
+     The tsi_peer array contains the subject names of the server certificates
+     associated with the contexts at the same index.  */
+  tsi_ssl_handshaker_factory base;
+  SSL_CTX** ssl_contexts;
+  tsi_peer* ssl_context_x509_subject_names;
+  size_t ssl_context_count;
+  unsigned char* alpn_protocol_list;
+  size_t alpn_protocol_list_length;
+};
+
+typedef struct {
+  tsi_handshaker base;
+  SSL* ssl;
+  BIO* network_io;
+  tsi_result result;
+  unsigned char* outgoing_bytes_buffer;
+  size_t outgoing_bytes_buffer_size;
+  tsi_ssl_handshaker_factory* factory_ref;
+} tsi_ssl_handshaker;
+
+typedef struct {
+  tsi_handshaker_result base;
+  SSL* ssl;
+  BIO* network_io;
+  unsigned char* unused_bytes;
+  size_t unused_bytes_size;
+} tsi_ssl_handshaker_result;
+
+typedef struct {
+  tsi_frame_protector base;
+  SSL* ssl;
+  BIO* network_io;
+  unsigned char* buffer;
+  size_t buffer_size;
+  size_t buffer_offset;
+} tsi_ssl_frame_protector;
+
+/* --- Library Initialization. ---*/
+
+static gpr_once g_init_openssl_once = GPR_ONCE_INIT;
+static int g_ssl_ctx_ex_factory_index = -1;
+static const unsigned char kSslSessionIdContext[] = {'g', 'r', 'p', 'c'};
+#ifndef OPENSSL_IS_BORINGSSL
+static const char kSslEnginePrefix[] = "engine:";
+#endif
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000
+static gpr_mu* g_openssl_mutexes = nullptr;
+static void openssl_locking_cb(int mode, int type, const char* file,
+                               int line) GRPC_UNUSED;
+static unsigned long openssl_thread_id_cb(void) GRPC_UNUSED;
+
+static void openssl_locking_cb(int mode, int type, const char* file, int line) {
+  if (mode & CRYPTO_LOCK) {
+    gpr_mu_lock(&g_openssl_mutexes[type]);
+  } else {
+    gpr_mu_unlock(&g_openssl_mutexes[type]);
+  }
+}
+
+static unsigned long openssl_thread_id_cb(void) {
+  return static_cast<unsigned long>(gpr_thd_currentid());
+}
+#endif
+
+static void init_openssl(void) {
+#if OPENSSL_API_COMPAT >= 0x10100000L
+  OPENSSL_init_ssl(0, NULL);
+#else
+  SSL_library_init();
+  SSL_load_error_strings();
+  OpenSSL_add_all_algorithms();
+#endif
+#if OPENSSL_VERSION_NUMBER < 0x10100000
+  if (!CRYPTO_get_locking_callback()) {
+    int num_locks = CRYPTO_num_locks();
+    GPR_ASSERT(num_locks > 0);
+    g_openssl_mutexes = static_cast<gpr_mu*>(
+        gpr_malloc(static_cast<size_t>(num_locks) * sizeof(gpr_mu)));
+    for (int i = 0; i < num_locks; i++) {
+      gpr_mu_init(&g_openssl_mutexes[i]);
+    }
+    CRYPTO_set_locking_callback(openssl_locking_cb);
+    CRYPTO_set_id_callback(openssl_thread_id_cb);
+  } else {
+    gpr_log(GPR_INFO, "OpenSSL callback has already been set.");
+  }
+#endif
+  g_ssl_ctx_ex_factory_index =
+      SSL_CTX_get_ex_new_index(0, nullptr, nullptr, nullptr, nullptr);
+  GPR_ASSERT(g_ssl_ctx_ex_factory_index != -1);
+}
+
+/* --- Ssl utils. ---*/
+
+static const char* ssl_error_string(int error) {
+  switch (error) {
+    case SSL_ERROR_NONE:
+      return "SSL_ERROR_NONE";
+    case SSL_ERROR_ZERO_RETURN:
+      return "SSL_ERROR_ZERO_RETURN";
+    case SSL_ERROR_WANT_READ:
+      return "SSL_ERROR_WANT_READ";
+    case SSL_ERROR_WANT_WRITE:
+      return "SSL_ERROR_WANT_WRITE";
+    case SSL_ERROR_WANT_CONNECT:
+      return "SSL_ERROR_WANT_CONNECT";
+    case SSL_ERROR_WANT_ACCEPT:
+      return "SSL_ERROR_WANT_ACCEPT";
+    case SSL_ERROR_WANT_X509_LOOKUP:
+      return "SSL_ERROR_WANT_X509_LOOKUP";
+    case SSL_ERROR_SYSCALL:
+      return "SSL_ERROR_SYSCALL";
+    case SSL_ERROR_SSL:
+      return "SSL_ERROR_SSL";
+    default:
+      return "Unknown error";
+  }
+}
+
+/* TODO(jboeuf): Remove when we are past the debugging phase with this code. */
+static void ssl_log_where_info(const SSL* ssl, int where, int flag,
+                               const char* msg) {
+  if ((where & flag) && GRPC_TRACE_FLAG_ENABLED(tsi_tracing_enabled)) {
+    gpr_log(GPR_INFO, "%20.20s - %30.30s  - %5.10s", msg,
+            SSL_state_string_long(ssl), SSL_state_string(ssl));
+  }
+}
+
+/* Used for debugging. TODO(jboeuf): Remove when code is mature enough. */
+static void ssl_info_callback(const SSL* ssl, int where, int ret) {
+  if (ret == 0) {
+    gpr_log(GPR_ERROR, "ssl_info_callback: error occurred.\n");
+    return;
+  }
+
+  ssl_log_where_info(ssl, where, SSL_CB_LOOP, "LOOP");
+  ssl_log_where_info(ssl, where, SSL_CB_HANDSHAKE_START, "HANDSHAKE START");
+  ssl_log_where_info(ssl, where, SSL_CB_HANDSHAKE_DONE, "HANDSHAKE DONE");
+}
+
+/* Returns 1 if name looks like an IP address, 0 otherwise.
+   This is a very rough heuristic, and only handles IPv6 in hexadecimal form. */
+static int looks_like_ip_address(grpc_core::StringView name) {
+  size_t dot_count = 0;
+  size_t num_size = 0;
+  for (size_t i = 0; i < name.size(); ++i) {
+    if (name[i] == ':') {
+      /* IPv6 Address in hexadecimal form, : is not allowed in DNS names. */
+      return 1;
+    }
+    if (name[i] >= '0' && name[i] <= '9') {
+      if (num_size > 3) return 0;
+      num_size++;
+    } else if (name[i] == '.') {
+      if (dot_count > 3 || num_size == 0) return 0;
+      dot_count++;
+      num_size = 0;
+    } else {
+      return 0;
+    }
+  }
+  if (dot_count < 3 || num_size == 0) return 0;
+  return 1;
+}
+
+/* Gets the subject CN from an X509 cert. */
+static tsi_result ssl_get_x509_common_name(X509* cert, unsigned char** utf8,
+                                           size_t* utf8_size) {
+  int common_name_index = -1;
+  X509_NAME_ENTRY* common_name_entry = nullptr;
+  ASN1_STRING* common_name_asn1 = nullptr;
+  X509_NAME* subject_name = X509_get_subject_name(cert);
+  int utf8_returned_size = 0;
+  if (subject_name == nullptr) {
+    gpr_log(GPR_INFO, "Could not get subject name from certificate.");
+    return TSI_NOT_FOUND;
+  }
+  common_name_index =
+      X509_NAME_get_index_by_NID(subject_name, NID_commonName, -1);
+  if (common_name_index == -1) {
+    gpr_log(GPR_INFO, "Could not get common name of subject from certificate.");
+    return TSI_NOT_FOUND;
+  }
+  common_name_entry = X509_NAME_get_entry(subject_name, common_name_index);
+  if (common_name_entry == nullptr) {
+    gpr_log(GPR_ERROR, "Could not get common name entry from certificate.");
+    return TSI_INTERNAL_ERROR;
+  }
+  common_name_asn1 = X509_NAME_ENTRY_get_data(common_name_entry);
+  if (common_name_asn1 == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Could not get common name entry asn1 from certificate.");
+    return TSI_INTERNAL_ERROR;
+  }
+  utf8_returned_size = ASN1_STRING_to_UTF8(utf8, common_name_asn1);
+  if (utf8_returned_size < 0) {
+    gpr_log(GPR_ERROR, "Could not extract utf8 from asn1 string.");
+    return TSI_OUT_OF_RESOURCES;
+  }
+  *utf8_size = static_cast<size_t>(utf8_returned_size);
+  return TSI_OK;
+}
+
+/* Gets the subject CN of an X509 cert as a tsi_peer_property. */
+static tsi_result peer_property_from_x509_common_name(
+    X509* cert, tsi_peer_property* property) {
+  unsigned char* common_name;
+  size_t common_name_size;
+  tsi_result result =
+      ssl_get_x509_common_name(cert, &common_name, &common_name_size);
+  if (result != TSI_OK) {
+    if (result == TSI_NOT_FOUND) {
+      common_name = nullptr;
+      common_name_size = 0;
+    } else {
+      return result;
+    }
+  }
+  result = tsi_construct_string_peer_property(
+      TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY,
+      common_name == nullptr ? "" : reinterpret_cast<const char*>(common_name),
+      common_name_size, property);
+  OPENSSL_free(common_name);
+  return result;
+}
+
+/* Gets the X509 cert in PEM format as a tsi_peer_property. */
+static tsi_result add_pem_certificate(X509* cert, tsi_peer_property* property) {
+  BIO* bio = BIO_new(BIO_s_mem());
+  if (!PEM_write_bio_X509(bio, cert)) {
+    BIO_free(bio);
+    return TSI_INTERNAL_ERROR;
+  }
+  char* contents;
+  long len = BIO_get_mem_data(bio, &contents);
+  if (len <= 0) {
+    BIO_free(bio);
+    return TSI_INTERNAL_ERROR;
+  }
+  tsi_result result = tsi_construct_string_peer_property(
+      TSI_X509_PEM_CERT_PROPERTY, (const char*)contents,
+      static_cast<size_t>(len), property);
+  BIO_free(bio);
+  return result;
+}
+
+/* Gets the subject SANs from an X509 cert as a tsi_peer_property. */
+static tsi_result add_subject_alt_names_properties_to_peer(
+    tsi_peer* peer, GENERAL_NAMES* subject_alt_names,
+    size_t subject_alt_name_count) {
+  size_t i;
+  tsi_result result = TSI_OK;
+
+  /* Reset for DNS entries filtering. */
+  peer->property_count -= subject_alt_name_count;
+
+  for (i = 0; i < subject_alt_name_count; i++) {
+    GENERAL_NAME* subject_alt_name =
+        sk_GENERAL_NAME_value(subject_alt_names, TSI_SIZE_AS_SIZE(i));
+    if (subject_alt_name->type == GEN_DNS ||
+        subject_alt_name->type == GEN_EMAIL ||
+        subject_alt_name->type == GEN_URI) {
+      unsigned char* name = nullptr;
+      int name_size;
+      if (subject_alt_name->type == GEN_DNS) {
+        name_size = ASN1_STRING_to_UTF8(&name, subject_alt_name->d.dNSName);
+      } else if (subject_alt_name->type == GEN_EMAIL) {
+        name_size = ASN1_STRING_to_UTF8(&name, subject_alt_name->d.rfc822Name);
+      } else {
+        name_size = ASN1_STRING_to_UTF8(
+            &name, subject_alt_name->d.uniformResourceIdentifier);
+      }
+      if (name_size < 0) {
+        gpr_log(GPR_ERROR, "Could not get utf8 from asn1 string.");
+        result = TSI_INTERNAL_ERROR;
+        break;
+      }
+      result = tsi_construct_string_peer_property(
+          TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY,
+          reinterpret_cast<const char*>(name), static_cast<size_t>(name_size),
+          &peer->properties[peer->property_count++]);
+      OPENSSL_free(name);
+    } else if (subject_alt_name->type == GEN_IPADD) {
+      char ntop_buf[INET6_ADDRSTRLEN];
+      int af;
+
+      if (subject_alt_name->d.iPAddress->length == 4) {
+        af = AF_INET;
+      } else if (subject_alt_name->d.iPAddress->length == 16) {
+        af = AF_INET6;
+      } else {
+        gpr_log(GPR_ERROR, "SAN IP Address contained invalid IP");
+        result = TSI_INTERNAL_ERROR;
+        break;
+      }
+      const char* name = inet_ntop(af, subject_alt_name->d.iPAddress->data,
+                                   ntop_buf, INET6_ADDRSTRLEN);
+      if (name == nullptr) {
+        gpr_log(GPR_ERROR, "Could not get IP string from asn1 octet.");
+        result = TSI_INTERNAL_ERROR;
+        break;
+      }
+
+      result = tsi_construct_string_peer_property_from_cstring(
+          TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY, name,
+          &peer->properties[peer->property_count++]);
+    }
+    if (result != TSI_OK) break;
+  }
+  return result;
+}
+
+/* Gets information about the peer's X509 cert as a tsi_peer object. */
+static tsi_result peer_from_x509(X509* cert, int include_certificate_type,
+                                 tsi_peer* peer) {
+  /* TODO(jboeuf): Maybe add more properties. */
+  GENERAL_NAMES* subject_alt_names = static_cast<GENERAL_NAMES*>(
+      X509_get_ext_d2i(cert, NID_subject_alt_name, nullptr, nullptr));
+  int subject_alt_name_count =
+      (subject_alt_names != nullptr)
+          ? static_cast<int>(sk_GENERAL_NAME_num(subject_alt_names))
+          : 0;
+  size_t property_count;
+  tsi_result result;
+  GPR_ASSERT(subject_alt_name_count >= 0);
+  property_count = (include_certificate_type ? static_cast<size_t>(1) : 0) +
+                   2 /* common name, certificate */ +
+                   static_cast<size_t>(subject_alt_name_count);
+  result = tsi_construct_peer(property_count, peer);
+  if (result != TSI_OK) return result;
+  do {
+    if (include_certificate_type) {
+      result = tsi_construct_string_peer_property_from_cstring(
+          TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+          &peer->properties[0]);
+      if (result != TSI_OK) break;
+    }
+    result = peer_property_from_x509_common_name(
+        cert, &peer->properties[include_certificate_type ? 1 : 0]);
+    if (result != TSI_OK) break;
+
+    result = add_pem_certificate(
+        cert, &peer->properties[include_certificate_type ? 2 : 1]);
+    if (result != TSI_OK) break;
+
+    if (subject_alt_name_count != 0) {
+      result = add_subject_alt_names_properties_to_peer(
+          peer, subject_alt_names, static_cast<size_t>(subject_alt_name_count));
+      if (result != TSI_OK) break;
+    }
+  } while (0);
+
+  if (subject_alt_names != nullptr) {
+    sk_GENERAL_NAME_pop_free(subject_alt_names, GENERAL_NAME_free);
+  }
+  if (result != TSI_OK) tsi_peer_destruct(peer);
+  return result;
+}
+
+/* Logs the SSL error stack. */
+static void log_ssl_error_stack(void) {
+  unsigned long err;
+  while ((err = ERR_get_error()) != 0) {
+    char details[256];
+    ERR_error_string_n(static_cast<uint32_t>(err), details, sizeof(details));
+    gpr_log(GPR_ERROR, "%s", details);
+  }
+}
+
+/* Performs an SSL_read and handle errors. */
+static tsi_result do_ssl_read(SSL* ssl, unsigned char* unprotected_bytes,
+                              size_t* unprotected_bytes_size) {
+  int read_from_ssl;
+  GPR_ASSERT(*unprotected_bytes_size <= INT_MAX);
+  read_from_ssl = SSL_read(ssl, unprotected_bytes,
+                           static_cast<int>(*unprotected_bytes_size));
+  if (read_from_ssl <= 0) {
+    read_from_ssl = SSL_get_error(ssl, read_from_ssl);
+    switch (read_from_ssl) {
+      case SSL_ERROR_ZERO_RETURN: /* Received a close_notify alert. */
+      case SSL_ERROR_WANT_READ:   /* We need more data to finish the frame. */
+        *unprotected_bytes_size = 0;
+        return TSI_OK;
+      case SSL_ERROR_WANT_WRITE:
+        gpr_log(
+            GPR_ERROR,
+            "Peer tried to renegotiate SSL connection. This is unsupported.");
+        return TSI_UNIMPLEMENTED;
+      case SSL_ERROR_SSL:
+        gpr_log(GPR_ERROR, "Corruption detected.");
+        log_ssl_error_stack();
+        return TSI_DATA_CORRUPTED;
+      default:
+        gpr_log(GPR_ERROR, "SSL_read failed with error %s.",
+                ssl_error_string(read_from_ssl));
+        return TSI_PROTOCOL_FAILURE;
+    }
+  }
+  *unprotected_bytes_size = static_cast<size_t>(read_from_ssl);
+  return TSI_OK;
+}
+
+/* Performs an SSL_write and handle errors. */
+static tsi_result do_ssl_write(SSL* ssl, unsigned char* unprotected_bytes,
+                               size_t unprotected_bytes_size) {
+  int ssl_write_result;
+  GPR_ASSERT(unprotected_bytes_size <= INT_MAX);
+  ssl_write_result = SSL_write(ssl, unprotected_bytes,
+                               static_cast<int>(unprotected_bytes_size));
+  if (ssl_write_result < 0) {
+    ssl_write_result = SSL_get_error(ssl, ssl_write_result);
+    if (ssl_write_result == SSL_ERROR_WANT_READ) {
+      gpr_log(GPR_ERROR,
+              "Peer tried to renegotiate SSL connection. This is unsupported.");
+      return TSI_UNIMPLEMENTED;
+    } else {
+      gpr_log(GPR_ERROR, "SSL_write failed with error %s.",
+              ssl_error_string(ssl_write_result));
+      return TSI_INTERNAL_ERROR;
+    }
+  }
+  return TSI_OK;
+}
+
+/* Loads an in-memory PEM certificate chain into the SSL context. */
+static tsi_result ssl_ctx_use_certificate_chain(SSL_CTX* context,
+                                                const char* pem_cert_chain,
+                                                size_t pem_cert_chain_size) {
+  tsi_result result = TSI_OK;
+  X509* certificate = nullptr;
+  BIO* pem;
+  GPR_ASSERT(pem_cert_chain_size <= INT_MAX);
+  pem = BIO_new_mem_buf((void*)pem_cert_chain,
+                        static_cast<int>(pem_cert_chain_size));
+  if (pem == nullptr) return TSI_OUT_OF_RESOURCES;
+
+  do {
+    certificate = PEM_read_bio_X509_AUX(pem, nullptr, nullptr, (void*)"");
+    if (certificate == nullptr) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    if (!SSL_CTX_use_certificate(context, certificate)) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    while (1) {
+      X509* certificate_authority =
+          PEM_read_bio_X509(pem, nullptr, nullptr, (void*)"");
+      if (certificate_authority == nullptr) {
+        ERR_clear_error();
+        break; /* Done reading. */
+      }
+      if (!SSL_CTX_add_extra_chain_cert(context, certificate_authority)) {
+        X509_free(certificate_authority);
+        result = TSI_INVALID_ARGUMENT;
+        break;
+      }
+      /* We don't need to free certificate_authority as its ownership has been
+         transferred to the context. That is not the case for certificate
+         though.
+       */
+    }
+  } while (0);
+
+  if (certificate != nullptr) X509_free(certificate);
+  BIO_free(pem);
+  return result;
+}
+
+#ifndef OPENSSL_IS_BORINGSSL
+static tsi_result ssl_ctx_use_engine_private_key(SSL_CTX* context,
+                                                 const char* pem_key,
+                                                 size_t pem_key_size) {
+  tsi_result result = TSI_OK;
+  EVP_PKEY* private_key = nullptr;
+  ENGINE* engine = nullptr;
+  char* engine_name = nullptr;
+  // Parse key which is in following format engine:<engine_id>:<key_id>
+  do {
+    char* engine_start = (char*)pem_key + strlen(kSslEnginePrefix);
+    char* engine_end = (char*)strchr(engine_start, ':');
+    if (engine_end == nullptr) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    char* key_id = engine_end + 1;
+    int engine_name_length = engine_end - engine_start;
+    if (engine_name_length == 0) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    engine_name = static_cast<char*>(gpr_zalloc(engine_name_length + 1));
+    memcpy(engine_name, engine_start, engine_name_length);
+    gpr_log(GPR_DEBUG, "ENGINE key: %s", engine_name);
+    ENGINE_load_dynamic();
+    engine = ENGINE_by_id(engine_name);
+    if (engine == nullptr) {
+      // If not available at ENGINE_DIR, use dynamic to load from
+      // current working directory.
+      engine = ENGINE_by_id("dynamic");
+      if (engine == nullptr) {
+        gpr_log(GPR_ERROR, "Cannot load dynamic engine");
+        result = TSI_INVALID_ARGUMENT;
+        break;
+      }
+      if (!ENGINE_ctrl_cmd_string(engine, "ID", engine_name, 0) ||
+          !ENGINE_ctrl_cmd_string(engine, "DIR_LOAD", "2", 0) ||
+          !ENGINE_ctrl_cmd_string(engine, "DIR_ADD", ".", 0) ||
+          !ENGINE_ctrl_cmd_string(engine, "LIST_ADD", "1", 0) ||
+          !ENGINE_ctrl_cmd_string(engine, "LOAD", NULL, 0)) {
+        gpr_log(GPR_ERROR, "Cannot find engine");
+        result = TSI_INVALID_ARGUMENT;
+        break;
+      }
+    }
+    if (!ENGINE_set_default(engine, ENGINE_METHOD_ALL)) {
+      gpr_log(GPR_ERROR, "ENGINE_set_default with ENGINE_METHOD_ALL failed");
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    if (!ENGINE_init(engine)) {
+      gpr_log(GPR_ERROR, "ENGINE_init failed");
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    private_key = ENGINE_load_private_key(engine, key_id, 0, 0);
+    if (private_key == nullptr) {
+      gpr_log(GPR_ERROR, "ENGINE_load_private_key failed");
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    if (!SSL_CTX_use_PrivateKey(context, private_key)) {
+      gpr_log(GPR_ERROR, "SSL_CTX_use_PrivateKey failed");
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+  } while (0);
+  if (engine != nullptr) ENGINE_free(engine);
+  if (private_key != nullptr) EVP_PKEY_free(private_key);
+  if (engine_name != nullptr) gpr_free(engine_name);
+  return result;
+}
+#endif /* OPENSSL_IS_BORINGSSL */
+
+static tsi_result ssl_ctx_use_pem_private_key(SSL_CTX* context,
+                                              const char* pem_key,
+                                              size_t pem_key_size) {
+  tsi_result result = TSI_OK;
+  EVP_PKEY* private_key = nullptr;
+  BIO* pem;
+  GPR_ASSERT(pem_key_size <= INT_MAX);
+  pem = BIO_new_mem_buf((void*)pem_key, static_cast<int>(pem_key_size));
+  if (pem == nullptr) return TSI_OUT_OF_RESOURCES;
+  do {
+    private_key = PEM_read_bio_PrivateKey(pem, nullptr, nullptr, (void*)"");
+    if (private_key == nullptr) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+    if (!SSL_CTX_use_PrivateKey(context, private_key)) {
+      result = TSI_INVALID_ARGUMENT;
+      break;
+    }
+  } while (0);
+  if (private_key != nullptr) EVP_PKEY_free(private_key);
+  BIO_free(pem);
+  return result;
+}
+
+/* Loads an in-memory PEM private key into the SSL context. */
+static tsi_result ssl_ctx_use_private_key(SSL_CTX* context, const char* pem_key,
+                                          size_t pem_key_size) {
+// BoringSSL does not have ENGINE support
+#ifndef OPENSSL_IS_BORINGSSL
+  if (strncmp(pem_key, kSslEnginePrefix, strlen(kSslEnginePrefix)) == 0) {
+    return ssl_ctx_use_engine_private_key(context, pem_key, pem_key_size);
+  } else
+#endif /* OPENSSL_IS_BORINGSSL */
+  {
+    return ssl_ctx_use_pem_private_key(context, pem_key, pem_key_size);
+  }
+}
+
+/* Loads in-memory PEM verification certs into the SSL context and optionally
+   returns the verification cert names (root_names can be NULL). */
+static tsi_result x509_store_load_certs(X509_STORE* cert_store,
+                                        const char* pem_roots,
+                                        size_t pem_roots_size,
+                                        STACK_OF(X509_NAME) * *root_names) {
+  tsi_result result = TSI_OK;
+  size_t num_roots = 0;
+  X509* root = nullptr;
+  X509_NAME* root_name = nullptr;
+  BIO* pem;
+  GPR_ASSERT(pem_roots_size <= INT_MAX);
+  pem = BIO_new_mem_buf((void*)pem_roots, static_cast<int>(pem_roots_size));
+  if (cert_store == nullptr) return TSI_INVALID_ARGUMENT;
+  if (pem == nullptr) return TSI_OUT_OF_RESOURCES;
+  if (root_names != nullptr) {
+    *root_names = sk_X509_NAME_new_null();
+    if (*root_names == nullptr) return TSI_OUT_OF_RESOURCES;
+  }
+
+  while (1) {
+    root = PEM_read_bio_X509_AUX(pem, nullptr, nullptr, (void*)"");
+    if (root == nullptr) {
+      ERR_clear_error();
+      break; /* We're at the end of stream. */
+    }
+    if (root_names != nullptr) {
+      root_name = X509_get_subject_name(root);
+      if (root_name == nullptr) {
+        gpr_log(GPR_ERROR, "Could not get name from root certificate.");
+        result = TSI_INVALID_ARGUMENT;
+        break;
+      }
+      root_name = X509_NAME_dup(root_name);
+      if (root_name == nullptr) {
+        result = TSI_OUT_OF_RESOURCES;
+        break;
+      }
+      sk_X509_NAME_push(*root_names, root_name);
+      root_name = nullptr;
+    }
+    ERR_clear_error();
+    if (!X509_STORE_add_cert(cert_store, root)) {
+      unsigned long error = ERR_get_error();
+      if (ERR_GET_LIB(error) != ERR_LIB_X509 ||
+          ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE) {
+        gpr_log(GPR_ERROR, "Could not add root certificate to ssl context.");
+        result = TSI_INTERNAL_ERROR;
+        break;
+      }
+    }
+    X509_free(root);
+    num_roots++;
+  }
+  if (num_roots == 0) {
+    gpr_log(GPR_ERROR, "Could not load any root certificate.");
+    result = TSI_INVALID_ARGUMENT;
+  }
+
+  if (result != TSI_OK) {
+    if (root != nullptr) X509_free(root);
+    if (root_names != nullptr) {
+      sk_X509_NAME_pop_free(*root_names, X509_NAME_free);
+      *root_names = nullptr;
+      if (root_name != nullptr) X509_NAME_free(root_name);
+    }
+  }
+  BIO_free(pem);
+  return result;
+}
+
+static tsi_result ssl_ctx_load_verification_certs(SSL_CTX* context,
+                                                  const char* pem_roots,
+                                                  size_t pem_roots_size,
+                                                  STACK_OF(X509_NAME) *
+                                                      *root_name) {
+  X509_STORE* cert_store = SSL_CTX_get_cert_store(context);
+  X509_STORE_set_flags(cert_store,
+                       X509_V_FLAG_PARTIAL_CHAIN | X509_V_FLAG_TRUSTED_FIRST);
+  return x509_store_load_certs(cert_store, pem_roots, pem_roots_size,
+                               root_name);
+}
+
+/* Populates the SSL context with a private key and a cert chain, and sets the
+   cipher list and the ephemeral ECDH key. */
+static tsi_result populate_ssl_context(
+    SSL_CTX* context, const tsi_ssl_pem_key_cert_pair* key_cert_pair,
+    const char* cipher_list) {
+  tsi_result result = TSI_OK;
+  if (key_cert_pair != nullptr) {
+    if (key_cert_pair->cert_chain != nullptr) {
+      result = ssl_ctx_use_certificate_chain(context, key_cert_pair->cert_chain,
+                                             strlen(key_cert_pair->cert_chain));
+      if (result != TSI_OK) {
+        gpr_log(GPR_ERROR, "Invalid cert chain file.");
+        return result;
+      }
+    }
+    if (key_cert_pair->private_key != nullptr) {
+      result = ssl_ctx_use_private_key(context, key_cert_pair->private_key,
+                                       strlen(key_cert_pair->private_key));
+      if (result != TSI_OK || !SSL_CTX_check_private_key(context)) {
+        gpr_log(GPR_ERROR, "Invalid private key.");
+        return result != TSI_OK ? result : TSI_INVALID_ARGUMENT;
+      }
+    }
+  }
+  if ((cipher_list != nullptr) &&
+      !SSL_CTX_set_cipher_list(context, cipher_list)) {
+    gpr_log(GPR_ERROR, "Invalid cipher list: %s.", cipher_list);
+    return TSI_INVALID_ARGUMENT;
+  }
+  {
+    EC_KEY* ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+    if (!SSL_CTX_set_tmp_ecdh(context, ecdh)) {
+      gpr_log(GPR_ERROR, "Could not set ephemeral ECDH key.");
+      EC_KEY_free(ecdh);
+      return TSI_INTERNAL_ERROR;
+    }
+    SSL_CTX_set_options(context, SSL_OP_SINGLE_ECDH_USE);
+    EC_KEY_free(ecdh);
+  }
+  return TSI_OK;
+}
+
+/* Extracts the CN and the SANs from an X509 cert as a peer object. */
+tsi_result tsi_ssl_extract_x509_subject_names_from_pem_cert(
+    const char* pem_cert, tsi_peer* peer) {
+  tsi_result result = TSI_OK;
+  X509* cert = nullptr;
+  BIO* pem;
+  pem = BIO_new_mem_buf((void*)pem_cert, static_cast<int>(strlen(pem_cert)));
+  if (pem == nullptr) return TSI_OUT_OF_RESOURCES;
+
+  cert = PEM_read_bio_X509(pem, nullptr, nullptr, (void*)"");
+  if (cert == nullptr) {
+    gpr_log(GPR_ERROR, "Invalid certificate");
+    result = TSI_INVALID_ARGUMENT;
+  } else {
+    result = peer_from_x509(cert, 0, peer);
+  }
+  if (cert != nullptr) X509_free(cert);
+  BIO_free(pem);
+  return result;
+}
+
+/* Builds the alpn protocol name list according to rfc 7301. */
+static tsi_result build_alpn_protocol_name_list(
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    unsigned char** protocol_name_list, size_t* protocol_name_list_length) {
+  uint16_t i;
+  unsigned char* current;
+  *protocol_name_list = nullptr;
+  *protocol_name_list_length = 0;
+  if (num_alpn_protocols == 0) return TSI_INVALID_ARGUMENT;
+  for (i = 0; i < num_alpn_protocols; i++) {
+    size_t length =
+        alpn_protocols[i] == nullptr ? 0 : strlen(alpn_protocols[i]);
+    if (length == 0 || length > 255) {
+      gpr_log(GPR_ERROR, "Invalid protocol name length: %d.",
+              static_cast<int>(length));
+      return TSI_INVALID_ARGUMENT;
+    }
+    *protocol_name_list_length += length + 1;
+  }
+  *protocol_name_list =
+      static_cast<unsigned char*>(gpr_malloc(*protocol_name_list_length));
+  if (*protocol_name_list == nullptr) return TSI_OUT_OF_RESOURCES;
+  current = *protocol_name_list;
+  for (i = 0; i < num_alpn_protocols; i++) {
+    size_t length = strlen(alpn_protocols[i]);
+    *(current++) = static_cast<uint8_t>(length); /* max checked above. */
+    memcpy(current, alpn_protocols[i], length);
+    current += length;
+  }
+  /* Safety check. */
+  if ((current < *protocol_name_list) ||
+      (static_cast<uintptr_t>(current - *protocol_name_list) !=
+       *protocol_name_list_length)) {
+    return TSI_INTERNAL_ERROR;
+  }
+  return TSI_OK;
+}
+
+// The verification callback is used for clients that don't really care about
+// the server's certificate, but we need to pull it anyway, in case a higher
+// layer wants to look at it. In this case the verification may fail, but
+// we don't really care.
+static int NullVerifyCallback(int /*preverify_ok*/, X509_STORE_CTX* /*ctx*/) {
+  return 1;
+}
+
+/* --- tsi_ssl_root_certs_store methods implementation. ---*/
+
+tsi_ssl_root_certs_store* tsi_ssl_root_certs_store_create(
+    const char* pem_roots) {
+  if (pem_roots == nullptr) {
+    gpr_log(GPR_ERROR, "The root certificates are empty.");
+    return nullptr;
+  }
+  tsi_ssl_root_certs_store* root_store = static_cast<tsi_ssl_root_certs_store*>(
+      gpr_zalloc(sizeof(tsi_ssl_root_certs_store)));
+  if (root_store == nullptr) {
+    gpr_log(GPR_ERROR, "Could not allocate buffer for ssl_root_certs_store.");
+    return nullptr;
+  }
+  root_store->store = X509_STORE_new();
+  if (root_store->store == nullptr) {
+    gpr_log(GPR_ERROR, "Could not allocate buffer for X509_STORE.");
+    gpr_free(root_store);
+    return nullptr;
+  }
+  tsi_result result = x509_store_load_certs(root_store->store, pem_roots,
+                                            strlen(pem_roots), nullptr);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Could not load root certificates.");
+    X509_STORE_free(root_store->store);
+    gpr_free(root_store);
+    return nullptr;
+  }
+  return root_store;
+}
+
+void tsi_ssl_root_certs_store_destroy(tsi_ssl_root_certs_store* self) {
+  if (self == nullptr) return;
+  X509_STORE_free(self->store);
+  gpr_free(self);
+}
+
+/* --- tsi_ssl_session_cache methods implementation. ---*/
+
+tsi_ssl_session_cache* tsi_ssl_session_cache_create_lru(size_t capacity) {
+  /* Pointer will be dereferenced by unref call. */
+  return reinterpret_cast<tsi_ssl_session_cache*>(
+      tsi::SslSessionLRUCache::Create(capacity).release());
+}
+
+void tsi_ssl_session_cache_ref(tsi_ssl_session_cache* cache) {
+  /* Pointer will be dereferenced by unref call. */
+  reinterpret_cast<tsi::SslSessionLRUCache*>(cache)->Ref().release();
+}
+
+void tsi_ssl_session_cache_unref(tsi_ssl_session_cache* cache) {
+  reinterpret_cast<tsi::SslSessionLRUCache*>(cache)->Unref();
+}
+
+/* --- tsi_frame_protector methods implementation. ---*/
+
+static tsi_result ssl_protector_protect(tsi_frame_protector* self,
+                                        const unsigned char* unprotected_bytes,
+                                        size_t* unprotected_bytes_size,
+                                        unsigned char* protected_output_frames,
+                                        size_t* protected_output_frames_size) {
+  tsi_ssl_frame_protector* impl =
+      reinterpret_cast<tsi_ssl_frame_protector*>(self);
+  int read_from_ssl;
+  size_t available;
+  tsi_result result = TSI_OK;
+
+  /* First see if we have some pending data in the SSL BIO. */
+  int pending_in_ssl = static_cast<int>(BIO_pending(impl->network_io));
+  if (pending_in_ssl > 0) {
+    *unprotected_bytes_size = 0;
+    GPR_ASSERT(*protected_output_frames_size <= INT_MAX);
+    read_from_ssl = BIO_read(impl->network_io, protected_output_frames,
+                             static_cast<int>(*protected_output_frames_size));
+    if (read_from_ssl < 0) {
+      gpr_log(GPR_ERROR,
+              "Could not read from BIO even though some data is pending");
+      return TSI_INTERNAL_ERROR;
+    }
+    *protected_output_frames_size = static_cast<size_t>(read_from_ssl);
+    return TSI_OK;
+  }
+
+  /* Now see if we can send a complete frame. */
+  available = impl->buffer_size - impl->buffer_offset;
+  if (available > *unprotected_bytes_size) {
+    /* If we cannot, just copy the data in our internal buffer. */
+    memcpy(impl->buffer + impl->buffer_offset, unprotected_bytes,
+           *unprotected_bytes_size);
+    impl->buffer_offset += *unprotected_bytes_size;
+    *protected_output_frames_size = 0;
+    return TSI_OK;
+  }
+
+  /* If we can, prepare the buffer, send it to SSL_write and read. */
+  memcpy(impl->buffer + impl->buffer_offset, unprotected_bytes, available);
+  result = do_ssl_write(impl->ssl, impl->buffer, impl->buffer_size);
+  if (result != TSI_OK) return result;
+
+  GPR_ASSERT(*protected_output_frames_size <= INT_MAX);
+  read_from_ssl = BIO_read(impl->network_io, protected_output_frames,
+                           static_cast<int>(*protected_output_frames_size));
+  if (read_from_ssl < 0) {
+    gpr_log(GPR_ERROR, "Could not read from BIO after SSL_write.");
+    return TSI_INTERNAL_ERROR;
+  }
+  *protected_output_frames_size = static_cast<size_t>(read_from_ssl);
+  *unprotected_bytes_size = available;
+  impl->buffer_offset = 0;
+  return TSI_OK;
+}
+
+static tsi_result ssl_protector_protect_flush(
+    tsi_frame_protector* self, unsigned char* protected_output_frames,
+    size_t* protected_output_frames_size, size_t* still_pending_size) {
+  tsi_result result = TSI_OK;
+  tsi_ssl_frame_protector* impl =
+      reinterpret_cast<tsi_ssl_frame_protector*>(self);
+  int read_from_ssl = 0;
+  int pending;
+
+  if (impl->buffer_offset != 0) {
+    result = do_ssl_write(impl->ssl, impl->buffer, impl->buffer_offset);
+    if (result != TSI_OK) return result;
+    impl->buffer_offset = 0;
+  }
+
+  pending = static_cast<int>(BIO_pending(impl->network_io));
+  GPR_ASSERT(pending >= 0);
+  *still_pending_size = static_cast<size_t>(pending);
+  if (*still_pending_size == 0) return TSI_OK;
+
+  GPR_ASSERT(*protected_output_frames_size <= INT_MAX);
+  read_from_ssl = BIO_read(impl->network_io, protected_output_frames,
+                           static_cast<int>(*protected_output_frames_size));
+  if (read_from_ssl <= 0) {
+    gpr_log(GPR_ERROR, "Could not read from BIO after SSL_write.");
+    return TSI_INTERNAL_ERROR;
+  }
+  *protected_output_frames_size = static_cast<size_t>(read_from_ssl);
+  pending = static_cast<int>(BIO_pending(impl->network_io));
+  GPR_ASSERT(pending >= 0);
+  *still_pending_size = static_cast<size_t>(pending);
+  return TSI_OK;
+}
+
+static tsi_result ssl_protector_unprotect(
+    tsi_frame_protector* self, const unsigned char* protected_frames_bytes,
+    size_t* protected_frames_bytes_size, unsigned char* unprotected_bytes,
+    size_t* unprotected_bytes_size) {
+  tsi_result result = TSI_OK;
+  int written_into_ssl = 0;
+  size_t output_bytes_size = *unprotected_bytes_size;
+  size_t output_bytes_offset = 0;
+  tsi_ssl_frame_protector* impl =
+      reinterpret_cast<tsi_ssl_frame_protector*>(self);
+
+  /* First, try to read remaining data from ssl. */
+  result = do_ssl_read(impl->ssl, unprotected_bytes, unprotected_bytes_size);
+  if (result != TSI_OK) return result;
+  if (*unprotected_bytes_size == output_bytes_size) {
+    /* We have read everything we could and cannot process any more input. */
+    *protected_frames_bytes_size = 0;
+    return TSI_OK;
+  }
+  output_bytes_offset = *unprotected_bytes_size;
+  unprotected_bytes += output_bytes_offset;
+  *unprotected_bytes_size = output_bytes_size - output_bytes_offset;
+
+  /* Then, try to write some data to ssl. */
+  GPR_ASSERT(*protected_frames_bytes_size <= INT_MAX);
+  written_into_ssl = BIO_write(impl->network_io, protected_frames_bytes,
+                               static_cast<int>(*protected_frames_bytes_size));
+  if (written_into_ssl < 0) {
+    gpr_log(GPR_ERROR, "Sending protected frame to ssl failed with %d",
+            written_into_ssl);
+    return TSI_INTERNAL_ERROR;
+  }
+  *protected_frames_bytes_size = static_cast<size_t>(written_into_ssl);
+
+  /* Now try to read some data again. */
+  result = do_ssl_read(impl->ssl, unprotected_bytes, unprotected_bytes_size);
+  if (result == TSI_OK) {
+    /* Don't forget to output the total number of bytes read. */
+    *unprotected_bytes_size += output_bytes_offset;
+  }
+  return result;
+}
+
+static void ssl_protector_destroy(tsi_frame_protector* self) {
+  tsi_ssl_frame_protector* impl =
+      reinterpret_cast<tsi_ssl_frame_protector*>(self);
+  if (impl->buffer != nullptr) gpr_free(impl->buffer);
+  if (impl->ssl != nullptr) SSL_free(impl->ssl);
+  if (impl->network_io != nullptr) BIO_free(impl->network_io);
+  gpr_free(self);
+}
+
+static const tsi_frame_protector_vtable frame_protector_vtable = {
+    ssl_protector_protect,
+    ssl_protector_protect_flush,
+    ssl_protector_unprotect,
+    ssl_protector_destroy,
+};
+
+/* --- tsi_server_handshaker_factory methods implementation. --- */
+
+static void tsi_ssl_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory* self) {
+  if (self == nullptr) return;
+
+  if (self->vtable != nullptr && self->vtable->destroy != nullptr) {
+    self->vtable->destroy(self);
+  }
+  /* Note, we don't free(self) here because this object is always directly
+   * embedded in another object. If tsi_ssl_handshaker_factory_init allocates
+   * any memory, it should be free'd here. */
+}
+
+static tsi_ssl_handshaker_factory* tsi_ssl_handshaker_factory_ref(
+    tsi_ssl_handshaker_factory* self) {
+  if (self == nullptr) return nullptr;
+  gpr_refn(&self->refcount, 1);
+  return self;
+}
+
+static void tsi_ssl_handshaker_factory_unref(tsi_ssl_handshaker_factory* self) {
+  if (self == nullptr) return;
+
+  if (gpr_unref(&self->refcount)) {
+    tsi_ssl_handshaker_factory_destroy(self);
+  }
+}
+
+static tsi_ssl_handshaker_factory_vtable handshaker_factory_vtable = {nullptr};
+
+/* Initializes a tsi_ssl_handshaker_factory object. Caller is responsible for
+ * allocating memory for the factory. */
+static void tsi_ssl_handshaker_factory_init(
+    tsi_ssl_handshaker_factory* factory) {
+  GPR_ASSERT(factory != nullptr);
+
+  factory->vtable = &handshaker_factory_vtable;
+  gpr_ref_init(&factory->refcount, 1);
+}
+
+/* Gets the X509 cert chain in PEM format as a tsi_peer_property. */
+tsi_result tsi_ssl_get_cert_chain_contents(STACK_OF(X509) * peer_chain,
+                                           tsi_peer_property* property) {
+  BIO* bio = BIO_new(BIO_s_mem());
+  const auto peer_chain_len = sk_X509_num(peer_chain);
+  for (auto i = decltype(peer_chain_len){0}; i < peer_chain_len; i++) {
+    if (!PEM_write_bio_X509(bio, sk_X509_value(peer_chain, i))) {
+      BIO_free(bio);
+      return TSI_INTERNAL_ERROR;
+    }
+  }
+  char* contents;
+  long len = BIO_get_mem_data(bio, &contents);
+  if (len <= 0) {
+    BIO_free(bio);
+    return TSI_INTERNAL_ERROR;
+  }
+  tsi_result result = tsi_construct_string_peer_property(
+      TSI_X509_PEM_CERT_CHAIN_PROPERTY, (const char*)contents,
+      static_cast<size_t>(len), property);
+  BIO_free(bio);
+  return result;
+}
+
+/* --- tsi_handshaker_result methods implementation. ---*/
+static tsi_result ssl_handshaker_result_extract_peer(
+    const tsi_handshaker_result* self, tsi_peer* peer) {
+  tsi_result result = TSI_OK;
+  const unsigned char* alpn_selected = nullptr;
+  unsigned int alpn_selected_len;
+  const tsi_ssl_handshaker_result* impl =
+      reinterpret_cast<const tsi_ssl_handshaker_result*>(self);
+  X509* peer_cert = SSL_get_peer_certificate(impl->ssl);
+  if (peer_cert != nullptr) {
+    result = peer_from_x509(peer_cert, 1, peer);
+    X509_free(peer_cert);
+    if (result != TSI_OK) return result;
+  }
+#if TSI_OPENSSL_ALPN_SUPPORT
+  SSL_get0_alpn_selected(impl->ssl, &alpn_selected, &alpn_selected_len);
+#endif /* TSI_OPENSSL_ALPN_SUPPORT */
+  if (alpn_selected == nullptr) {
+    /* Try npn. */
+    SSL_get0_next_proto_negotiated(impl->ssl, &alpn_selected,
+                                   &alpn_selected_len);
+  }
+  // When called on the client side, the stack also contains the
+  // peer's certificate; When called on the server side,
+  // the peer's certificate is not present in the stack
+  STACK_OF(X509)* peer_chain = SSL_get_peer_cert_chain(impl->ssl);
+  // 1 is for session reused property.
+  size_t new_property_count = peer->property_count + 3;
+  if (alpn_selected != nullptr) new_property_count++;
+  if (peer_chain != nullptr) new_property_count++;
+  tsi_peer_property* new_properties = static_cast<tsi_peer_property*>(
+      gpr_zalloc(sizeof(*new_properties) * new_property_count));
+  for (size_t i = 0; i < peer->property_count; i++) {
+    new_properties[i] = peer->properties[i];
+  }
+  if (peer->properties != nullptr) gpr_free(peer->properties);
+  peer->properties = new_properties;
+  // Add peer chain if available
+  if (peer_chain != nullptr) {
+    result = tsi_ssl_get_cert_chain_contents(
+        peer_chain, &peer->properties[peer->property_count]);
+    if (result == TSI_OK) peer->property_count++;
+  }
+  if (alpn_selected != nullptr) {
+    result = tsi_construct_string_peer_property(
+        TSI_SSL_ALPN_SELECTED_PROTOCOL,
+        reinterpret_cast<const char*>(alpn_selected), alpn_selected_len,
+        &peer->properties[peer->property_count]);
+    if (result != TSI_OK) return result;
+    peer->property_count++;
+  }
+  // Add security_level peer property.
+  result = tsi_construct_string_peer_property_from_cstring(
+      TSI_SECURITY_LEVEL_PEER_PROPERTY,
+      tsi_security_level_to_string(TSI_PRIVACY_AND_INTEGRITY),
+      &peer->properties[peer->property_count]);
+  if (result != TSI_OK) return result;
+  peer->property_count++;
+
+  const char* session_reused = SSL_session_reused(impl->ssl) ? "true" : "false";
+  result = tsi_construct_string_peer_property_from_cstring(
+      TSI_SSL_SESSION_REUSED_PEER_PROPERTY, session_reused,
+      &peer->properties[peer->property_count]);
+  if (result != TSI_OK) return result;
+  peer->property_count++;
+  return result;
+}
+
+static tsi_result ssl_handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector) {
+  size_t actual_max_output_protected_frame_size =
+      TSI_SSL_MAX_PROTECTED_FRAME_SIZE_UPPER_BOUND;
+  tsi_ssl_handshaker_result* impl =
+      reinterpret_cast<tsi_ssl_handshaker_result*>(
+          const_cast<tsi_handshaker_result*>(self));
+  tsi_ssl_frame_protector* protector_impl =
+      static_cast<tsi_ssl_frame_protector*>(
+          gpr_zalloc(sizeof(*protector_impl)));
+
+  if (max_output_protected_frame_size != nullptr) {
+    if (*max_output_protected_frame_size >
+        TSI_SSL_MAX_PROTECTED_FRAME_SIZE_UPPER_BOUND) {
+      *max_output_protected_frame_size =
+          TSI_SSL_MAX_PROTECTED_FRAME_SIZE_UPPER_BOUND;
+    } else if (*max_output_protected_frame_size <
+               TSI_SSL_MAX_PROTECTED_FRAME_SIZE_LOWER_BOUND) {
+      *max_output_protected_frame_size =
+          TSI_SSL_MAX_PROTECTED_FRAME_SIZE_LOWER_BOUND;
+    }
+    actual_max_output_protected_frame_size = *max_output_protected_frame_size;
+  }
+  protector_impl->buffer_size =
+      actual_max_output_protected_frame_size - TSI_SSL_MAX_PROTECTION_OVERHEAD;
+  protector_impl->buffer =
+      static_cast<unsigned char*>(gpr_malloc(protector_impl->buffer_size));
+  if (protector_impl->buffer == nullptr) {
+    gpr_log(GPR_ERROR,
+            "Could not allocated buffer for tsi_ssl_frame_protector.");
+    gpr_free(protector_impl);
+    return TSI_INTERNAL_ERROR;
+  }
+
+  /* Transfer ownership of ssl and network_io to the frame protector. */
+  protector_impl->ssl = impl->ssl;
+  impl->ssl = nullptr;
+  protector_impl->network_io = impl->network_io;
+  impl->network_io = nullptr;
+  protector_impl->base.vtable = &frame_protector_vtable;
+  *protector = &protector_impl->base;
+  return TSI_OK;
+}
+
+static tsi_result ssl_handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* bytes_size) {
+  const tsi_ssl_handshaker_result* impl =
+      reinterpret_cast<const tsi_ssl_handshaker_result*>(self);
+  *bytes_size = impl->unused_bytes_size;
+  *bytes = impl->unused_bytes;
+  return TSI_OK;
+}
+
+static void ssl_handshaker_result_destroy(tsi_handshaker_result* self) {
+  tsi_ssl_handshaker_result* impl =
+      reinterpret_cast<tsi_ssl_handshaker_result*>(self);
+  SSL_free(impl->ssl);
+  BIO_free(impl->network_io);
+  gpr_free(impl->unused_bytes);
+  gpr_free(impl);
+}
+
+static const tsi_handshaker_result_vtable handshaker_result_vtable = {
+    ssl_handshaker_result_extract_peer,
+    nullptr, /* create_zero_copy_grpc_protector */
+    ssl_handshaker_result_create_frame_protector,
+    ssl_handshaker_result_get_unused_bytes,
+    ssl_handshaker_result_destroy,
+};
+
+static tsi_result ssl_handshaker_result_create(
+    tsi_ssl_handshaker* handshaker, const unsigned char* unused_bytes,
+    size_t unused_bytes_size, tsi_handshaker_result** handshaker_result) {
+  if (handshaker == nullptr || handshaker_result == nullptr ||
+      (unused_bytes_size > 0 && unused_bytes == nullptr)) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_ssl_handshaker_result* result =
+      static_cast<tsi_ssl_handshaker_result*>(gpr_zalloc(sizeof(*result)));
+  result->base.vtable = &handshaker_result_vtable;
+  /* Transfer ownership of ssl and network_io to the handshaker result. */
+  result->ssl = handshaker->ssl;
+  handshaker->ssl = nullptr;
+  result->network_io = handshaker->network_io;
+  handshaker->network_io = nullptr;
+  if (unused_bytes_size > 0) {
+    result->unused_bytes =
+        static_cast<unsigned char*>(gpr_malloc(unused_bytes_size));
+    memcpy(result->unused_bytes, unused_bytes, unused_bytes_size);
+  }
+  result->unused_bytes_size = unused_bytes_size;
+  *handshaker_result = &result->base;
+  return TSI_OK;
+}
+
+/* --- tsi_handshaker methods implementation. ---*/
+
+static tsi_result ssl_handshaker_get_bytes_to_send_to_peer(
+    tsi_ssl_handshaker* impl, unsigned char* bytes, size_t* bytes_size) {
+  int bytes_read_from_ssl = 0;
+  if (bytes == nullptr || bytes_size == nullptr || *bytes_size == 0 ||
+      *bytes_size > INT_MAX) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  GPR_ASSERT(*bytes_size <= INT_MAX);
+  bytes_read_from_ssl =
+      BIO_read(impl->network_io, bytes, static_cast<int>(*bytes_size));
+  if (bytes_read_from_ssl < 0) {
+    *bytes_size = 0;
+    if (!BIO_should_retry(impl->network_io)) {
+      impl->result = TSI_INTERNAL_ERROR;
+      return impl->result;
+    } else {
+      return TSI_OK;
+    }
+  }
+  *bytes_size = static_cast<size_t>(bytes_read_from_ssl);
+  return BIO_pending(impl->network_io) == 0 ? TSI_OK : TSI_INCOMPLETE_DATA;
+}
+
+static tsi_result ssl_handshaker_get_result(tsi_ssl_handshaker* impl) {
+  if ((impl->result == TSI_HANDSHAKE_IN_PROGRESS) &&
+      SSL_is_init_finished(impl->ssl)) {
+    impl->result = TSI_OK;
+  }
+  return impl->result;
+}
+
+static tsi_result ssl_handshaker_process_bytes_from_peer(
+    tsi_ssl_handshaker* impl, const unsigned char* bytes, size_t* bytes_size) {
+  int bytes_written_into_ssl_size = 0;
+  if (bytes == nullptr || bytes_size == nullptr || *bytes_size > INT_MAX) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  GPR_ASSERT(*bytes_size <= INT_MAX);
+  bytes_written_into_ssl_size =
+      BIO_write(impl->network_io, bytes, static_cast<int>(*bytes_size));
+  if (bytes_written_into_ssl_size < 0) {
+    gpr_log(GPR_ERROR, "Could not write to memory BIO.");
+    impl->result = TSI_INTERNAL_ERROR;
+    return impl->result;
+  }
+  *bytes_size = static_cast<size_t>(bytes_written_into_ssl_size);
+
+  if (ssl_handshaker_get_result(impl) != TSI_HANDSHAKE_IN_PROGRESS) {
+    impl->result = TSI_OK;
+    return impl->result;
+  } else {
+    /* Get ready to get some bytes from SSL. */
+    int ssl_result = SSL_do_handshake(impl->ssl);
+    ssl_result = SSL_get_error(impl->ssl, ssl_result);
+    switch (ssl_result) {
+      case SSL_ERROR_WANT_READ:
+        if (BIO_pending(impl->network_io) == 0) {
+          /* We need more data. */
+          return TSI_INCOMPLETE_DATA;
+        } else {
+          return TSI_OK;
+        }
+      case SSL_ERROR_NONE:
+        return TSI_OK;
+      default: {
+        char err_str[256];
+        ERR_error_string_n(ERR_get_error(), err_str, sizeof(err_str));
+        gpr_log(GPR_ERROR, "Handshake failed with fatal error %s: %s.",
+                ssl_error_string(ssl_result), err_str);
+        impl->result = TSI_PROTOCOL_FAILURE;
+        return impl->result;
+      }
+    }
+  }
+}
+
+static void ssl_handshaker_destroy(tsi_handshaker* self) {
+  tsi_ssl_handshaker* impl = reinterpret_cast<tsi_ssl_handshaker*>(self);
+  SSL_free(impl->ssl);
+  BIO_free(impl->network_io);
+  gpr_free(impl->outgoing_bytes_buffer);
+  tsi_ssl_handshaker_factory_unref(impl->factory_ref);
+  gpr_free(impl);
+}
+
+static tsi_result ssl_handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** handshaker_result,
+    tsi_handshaker_on_next_done_cb /*cb*/, void* /*user_data*/) {
+  /* Input sanity check.  */
+  if ((received_bytes_size > 0 && received_bytes == nullptr) ||
+      bytes_to_send == nullptr || bytes_to_send_size == nullptr ||
+      handshaker_result == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  /* If there are received bytes, process them first.  */
+  tsi_ssl_handshaker* impl = reinterpret_cast<tsi_ssl_handshaker*>(self);
+  tsi_result status = TSI_OK;
+  size_t bytes_consumed = received_bytes_size;
+  if (received_bytes_size > 0) {
+    status = ssl_handshaker_process_bytes_from_peer(impl, received_bytes,
+                                                    &bytes_consumed);
+    if (status != TSI_OK) return status;
+  }
+  /* Get bytes to send to the peer, if available.  */
+  size_t offset = 0;
+  do {
+    size_t to_send_size = impl->outgoing_bytes_buffer_size - offset;
+    status = ssl_handshaker_get_bytes_to_send_to_peer(
+        impl, impl->outgoing_bytes_buffer + offset, &to_send_size);
+    offset += to_send_size;
+    if (status == TSI_INCOMPLETE_DATA) {
+      impl->outgoing_bytes_buffer_size *= 2;
+      impl->outgoing_bytes_buffer = static_cast<unsigned char*>(gpr_realloc(
+          impl->outgoing_bytes_buffer, impl->outgoing_bytes_buffer_size));
+    }
+  } while (status == TSI_INCOMPLETE_DATA);
+  if (status != TSI_OK) return status;
+  *bytes_to_send = impl->outgoing_bytes_buffer;
+  *bytes_to_send_size = offset;
+  /* If handshake completes, create tsi_handshaker_result.  */
+  if (ssl_handshaker_get_result(impl) == TSI_HANDSHAKE_IN_PROGRESS) {
+    *handshaker_result = nullptr;
+  } else {
+    size_t unused_bytes_size = received_bytes_size - bytes_consumed;
+    const unsigned char* unused_bytes =
+        unused_bytes_size == 0 ? nullptr : received_bytes + bytes_consumed;
+    status = ssl_handshaker_result_create(impl, unused_bytes, unused_bytes_size,
+                                          handshaker_result);
+    if (status == TSI_OK) {
+      /* Indicates that the handshake has completed and that a handshaker_result
+       * has been created. */
+      self->handshaker_result_created = true;
+    }
+  }
+  return status;
+}
+
+static const tsi_handshaker_vtable handshaker_vtable = {
+    nullptr, /* get_bytes_to_send_to_peer -- deprecated */
+    nullptr, /* process_bytes_from_peer   -- deprecated */
+    nullptr, /* get_result                -- deprecated */
+    nullptr, /* extract_peer              -- deprecated */
+    nullptr, /* create_frame_protector    -- deprecated */
+    ssl_handshaker_destroy,
+    ssl_handshaker_next,
+    nullptr, /* shutdown */
+};
+
+/* --- tsi_ssl_handshaker_factory common methods. --- */
+
+static void tsi_ssl_handshaker_resume_session(
+    SSL* ssl, tsi::SslSessionLRUCache* session_cache) {
+  const char* server_name = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
+  if (server_name == nullptr) {
+    return;
+  }
+  tsi::SslSessionPtr session = session_cache->Get(server_name);
+  if (session != nullptr) {
+    // SSL_set_session internally increments reference counter.
+    SSL_set_session(ssl, session.get());
+  }
+}
+
+static tsi_result create_tsi_ssl_handshaker(SSL_CTX* ctx, int is_client,
+                                            const char* server_name_indication,
+                                            tsi_ssl_handshaker_factory* factory,
+                                            tsi_handshaker** handshaker) {
+  SSL* ssl = SSL_new(ctx);
+  BIO* network_io = nullptr;
+  BIO* ssl_io = nullptr;
+  tsi_ssl_handshaker* impl = nullptr;
+  *handshaker = nullptr;
+  if (ctx == nullptr) {
+    gpr_log(GPR_ERROR, "SSL Context is null. Should never happen.");
+    return TSI_INTERNAL_ERROR;
+  }
+  if (ssl == nullptr) {
+    return TSI_OUT_OF_RESOURCES;
+  }
+  SSL_set_info_callback(ssl, ssl_info_callback);
+
+  if (!BIO_new_bio_pair(&network_io, 0, &ssl_io, 0)) {
+    gpr_log(GPR_ERROR, "BIO_new_bio_pair failed.");
+    SSL_free(ssl);
+    return TSI_OUT_OF_RESOURCES;
+  }
+  SSL_set_bio(ssl, ssl_io, ssl_io);
+  if (is_client) {
+    int ssl_result;
+    SSL_set_connect_state(ssl);
+    if (server_name_indication != nullptr) {
+      if (!SSL_set_tlsext_host_name(ssl, server_name_indication)) {
+        gpr_log(GPR_ERROR, "Invalid server name indication %s.",
+                server_name_indication);
+        SSL_free(ssl);
+        BIO_free(network_io);
+        return TSI_INTERNAL_ERROR;
+      }
+    }
+    tsi_ssl_client_handshaker_factory* client_factory =
+        reinterpret_cast<tsi_ssl_client_handshaker_factory*>(factory);
+    if (client_factory->session_cache != nullptr) {
+      tsi_ssl_handshaker_resume_session(ssl,
+                                        client_factory->session_cache.get());
+    }
+    ssl_result = SSL_do_handshake(ssl);
+    ssl_result = SSL_get_error(ssl, ssl_result);
+    if (ssl_result != SSL_ERROR_WANT_READ) {
+      gpr_log(GPR_ERROR,
+              "Unexpected error received from first SSL_do_handshake call: %s",
+              ssl_error_string(ssl_result));
+      SSL_free(ssl);
+      BIO_free(network_io);
+      return TSI_INTERNAL_ERROR;
+    }
+  } else {
+    SSL_set_accept_state(ssl);
+  }
+
+  impl = static_cast<tsi_ssl_handshaker*>(gpr_zalloc(sizeof(*impl)));
+  impl->ssl = ssl;
+  impl->network_io = network_io;
+  impl->result = TSI_HANDSHAKE_IN_PROGRESS;
+  impl->outgoing_bytes_buffer_size =
+      TSI_SSL_HANDSHAKER_OUTGOING_BUFFER_INITIAL_SIZE;
+  impl->outgoing_bytes_buffer =
+      static_cast<unsigned char*>(gpr_zalloc(impl->outgoing_bytes_buffer_size));
+  impl->base.vtable = &handshaker_vtable;
+  impl->factory_ref = tsi_ssl_handshaker_factory_ref(factory);
+  *handshaker = &impl->base;
+  return TSI_OK;
+}
+
+static int select_protocol_list(const unsigned char** out,
+                                unsigned char* outlen,
+                                const unsigned char* client_list,
+                                size_t client_list_len,
+                                const unsigned char* server_list,
+                                size_t server_list_len) {
+  const unsigned char* client_current = client_list;
+  while (static_cast<unsigned int>(client_current - client_list) <
+         client_list_len) {
+    unsigned char client_current_len = *(client_current++);
+    const unsigned char* server_current = server_list;
+    while ((server_current >= server_list) &&
+           static_cast<uintptr_t>(server_current - server_list) <
+               server_list_len) {
+      unsigned char server_current_len = *(server_current++);
+      if ((client_current_len == server_current_len) &&
+          !memcmp(client_current, server_current, server_current_len)) {
+        *out = server_current;
+        *outlen = server_current_len;
+        return SSL_TLSEXT_ERR_OK;
+      }
+      server_current += server_current_len;
+    }
+    client_current += client_current_len;
+  }
+  return SSL_TLSEXT_ERR_NOACK;
+}
+
+/* --- tsi_ssl_client_handshaker_factory methods implementation. --- */
+
+tsi_result tsi_ssl_client_handshaker_factory_create_handshaker(
+    tsi_ssl_client_handshaker_factory* self, const char* server_name_indication,
+    tsi_handshaker** handshaker) {
+  return create_tsi_ssl_handshaker(self->ssl_context, 1, server_name_indication,
+                                   &self->base, handshaker);
+}
+
+void tsi_ssl_client_handshaker_factory_unref(
+    tsi_ssl_client_handshaker_factory* self) {
+  if (self == nullptr) return;
+  tsi_ssl_handshaker_factory_unref(&self->base);
+}
+
+static void tsi_ssl_client_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory* factory) {
+  if (factory == nullptr) return;
+  tsi_ssl_client_handshaker_factory* self =
+      reinterpret_cast<tsi_ssl_client_handshaker_factory*>(factory);
+  if (self->ssl_context != nullptr) SSL_CTX_free(self->ssl_context);
+  if (self->alpn_protocol_list != nullptr) gpr_free(self->alpn_protocol_list);
+  self->session_cache.reset();
+  gpr_free(self);
+}
+
+static int client_handshaker_factory_npn_callback(
+    SSL* /*ssl*/, unsigned char** out, unsigned char* outlen,
+    const unsigned char* in, unsigned int inlen, void* arg) {
+  tsi_ssl_client_handshaker_factory* factory =
+      static_cast<tsi_ssl_client_handshaker_factory*>(arg);
+  return select_protocol_list((const unsigned char**)out, outlen,
+                              factory->alpn_protocol_list,
+                              factory->alpn_protocol_list_length, in, inlen);
+}
+
+/* --- tsi_ssl_server_handshaker_factory methods implementation. --- */
+
+tsi_result tsi_ssl_server_handshaker_factory_create_handshaker(
+    tsi_ssl_server_handshaker_factory* self, tsi_handshaker** handshaker) {
+  if (self->ssl_context_count == 0) return TSI_INVALID_ARGUMENT;
+  /* Create the handshaker with the first context. We will switch if needed
+     because of SNI in ssl_server_handshaker_factory_servername_callback.  */
+  return create_tsi_ssl_handshaker(self->ssl_contexts[0], 0, nullptr,
+                                   &self->base, handshaker);
+}
+
+void tsi_ssl_server_handshaker_factory_unref(
+    tsi_ssl_server_handshaker_factory* self) {
+  if (self == nullptr) return;
+  tsi_ssl_handshaker_factory_unref(&self->base);
+}
+
+static void tsi_ssl_server_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory* factory) {
+  if (factory == nullptr) return;
+  tsi_ssl_server_handshaker_factory* self =
+      reinterpret_cast<tsi_ssl_server_handshaker_factory*>(factory);
+  size_t i;
+  for (i = 0; i < self->ssl_context_count; i++) {
+    if (self->ssl_contexts[i] != nullptr) {
+      SSL_CTX_free(self->ssl_contexts[i]);
+      tsi_peer_destruct(&self->ssl_context_x509_subject_names[i]);
+    }
+  }
+  if (self->ssl_contexts != nullptr) gpr_free(self->ssl_contexts);
+  if (self->ssl_context_x509_subject_names != nullptr) {
+    gpr_free(self->ssl_context_x509_subject_names);
+  }
+  if (self->alpn_protocol_list != nullptr) gpr_free(self->alpn_protocol_list);
+  gpr_free(self);
+}
+
+static int does_entry_match_name(grpc_core::StringView entry,
+                                 grpc_core::StringView name) {
+  if (entry.empty()) return 0;
+
+  /* Take care of '.' terminations. */
+  if (name.back() == '.') {
+    name.remove_suffix(1);
+  }
+  if (entry.back() == '.') {
+    entry.remove_suffix(1);
+    if (entry.empty()) return 0;
+  }
+
+  if (name == entry) {
+    return 1; /* Perfect match. */
+  }
+  if (entry.front() != '*') return 0;
+
+  /* Wildchar subdomain matching. */
+  if (entry.size() < 3 || entry[1] != '.') { /* At least *.x */
+    gpr_log(GPR_ERROR, "Invalid wildchar entry.");
+    return 0;
+  }
+  size_t name_subdomain_pos = name.find('.');
+  if (name_subdomain_pos == grpc_core::StringView::npos) return 0;
+  if (name_subdomain_pos >= name.size() - 2) return 0;
+  grpc_core::StringView name_subdomain =
+      name.substr(name_subdomain_pos + 1); /* Starts after the dot. */
+  entry.remove_prefix(2);                  /* Remove *. */
+  size_t dot = name_subdomain.find('.');
+  if (dot == grpc_core::StringView::npos || dot == name_subdomain.size() - 1) {
+    grpc_core::UniquePtr<char> name_subdomain_cstr(
+        grpc_core::StringViewToCString(name_subdomain));
+    gpr_log(GPR_ERROR, "Invalid toplevel subdomain: %s",
+            name_subdomain_cstr.get());
+    return 0;
+  }
+  if (name_subdomain.back() == '.') {
+    name_subdomain.remove_suffix(1);
+  }
+  return !entry.empty() && name_subdomain == entry;
+}
+
+static int ssl_server_handshaker_factory_servername_callback(SSL* ssl,
+                                                             int* /*ap*/,
+                                                             void* arg) {
+  tsi_ssl_server_handshaker_factory* impl =
+      static_cast<tsi_ssl_server_handshaker_factory*>(arg);
+  size_t i = 0;
+  const char* servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
+  if (servername == nullptr || strlen(servername) == 0) {
+    return SSL_TLSEXT_ERR_NOACK;
+  }
+
+  for (i = 0; i < impl->ssl_context_count; i++) {
+    if (tsi_ssl_peer_matches_name(&impl->ssl_context_x509_subject_names[i],
+                                  servername)) {
+      SSL_set_SSL_CTX(ssl, impl->ssl_contexts[i]);
+      return SSL_TLSEXT_ERR_OK;
+    }
+  }
+  gpr_log(GPR_ERROR, "No match found for server name: %s.", servername);
+  return SSL_TLSEXT_ERR_ALERT_WARNING;
+}
+
+#if TSI_OPENSSL_ALPN_SUPPORT
+static int server_handshaker_factory_alpn_callback(
+    SSL* /*ssl*/, const unsigned char** out, unsigned char* outlen,
+    const unsigned char* in, unsigned int inlen, void* arg) {
+  tsi_ssl_server_handshaker_factory* factory =
+      static_cast<tsi_ssl_server_handshaker_factory*>(arg);
+  return select_protocol_list(out, outlen, in, inlen,
+                              factory->alpn_protocol_list,
+                              factory->alpn_protocol_list_length);
+}
+#endif /* TSI_OPENSSL_ALPN_SUPPORT */
+
+static int server_handshaker_factory_npn_advertised_callback(
+    SSL* /*ssl*/, const unsigned char** out, unsigned int* outlen, void* arg) {
+  tsi_ssl_server_handshaker_factory* factory =
+      static_cast<tsi_ssl_server_handshaker_factory*>(arg);
+  *out = factory->alpn_protocol_list;
+  GPR_ASSERT(factory->alpn_protocol_list_length <= UINT_MAX);
+  *outlen = static_cast<unsigned int>(factory->alpn_protocol_list_length);
+  return SSL_TLSEXT_ERR_OK;
+}
+
+/// This callback is called when new \a session is established and ready to
+/// be cached. This session can be reused for new connections to similar
+/// servers at later point of time.
+/// It's intended to be used with SSL_CTX_sess_set_new_cb function.
+///
+/// It returns 1 if callback takes ownership over \a session and 0 otherwise.
+static int server_handshaker_factory_new_session_callback(
+    SSL* ssl, SSL_SESSION* session) {
+  SSL_CTX* ssl_context = SSL_get_SSL_CTX(ssl);
+  if (ssl_context == nullptr) {
+    return 0;
+  }
+  void* arg = SSL_CTX_get_ex_data(ssl_context, g_ssl_ctx_ex_factory_index);
+  tsi_ssl_client_handshaker_factory* factory =
+      static_cast<tsi_ssl_client_handshaker_factory*>(arg);
+  const char* server_name = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
+  if (server_name == nullptr) {
+    return 0;
+  }
+  factory->session_cache->Put(server_name, tsi::SslSessionPtr(session));
+  // Return 1 to indicate transferred ownership over the given session.
+  return 1;
+}
+
+/* --- tsi_ssl_handshaker_factory constructors. --- */
+
+static tsi_ssl_handshaker_factory_vtable client_handshaker_factory_vtable = {
+    tsi_ssl_client_handshaker_factory_destroy};
+
+tsi_result tsi_create_ssl_client_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const char* pem_root_certs, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_client_handshaker_factory** factory) {
+  tsi_ssl_client_handshaker_options options;
+  options.pem_key_cert_pair = pem_key_cert_pair;
+  options.pem_root_certs = pem_root_certs;
+  options.cipher_suites = cipher_suites;
+  options.alpn_protocols = alpn_protocols;
+  options.num_alpn_protocols = num_alpn_protocols;
+  return tsi_create_ssl_client_handshaker_factory_with_options(&options,
+                                                               factory);
+}
+
+tsi_result tsi_create_ssl_client_handshaker_factory_with_options(
+    const tsi_ssl_client_handshaker_options* options,
+    tsi_ssl_client_handshaker_factory** factory) {
+  SSL_CTX* ssl_context = nullptr;
+  tsi_ssl_client_handshaker_factory* impl = nullptr;
+  tsi_result result = TSI_OK;
+
+  gpr_once_init(&g_init_openssl_once, init_openssl);
+
+  if (factory == nullptr) return TSI_INVALID_ARGUMENT;
+  *factory = nullptr;
+  if (options->pem_root_certs == nullptr && options->root_store == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+
+#if defined(OPENSSL_NO_TLS1_2_METHOD) || OPENSSL_API_COMPAT >= 0x10100000L
+  ssl_context = SSL_CTX_new(TLS_method());
+#else
+  ssl_context = SSL_CTX_new(TLSv1_2_method());
+#endif
+  if (ssl_context == nullptr) {
+    gpr_log(GPR_ERROR, "Could not create ssl context.");
+    return TSI_INVALID_ARGUMENT;
+  }
+
+  impl = static_cast<tsi_ssl_client_handshaker_factory*>(
+      gpr_zalloc(sizeof(*impl)));
+  tsi_ssl_handshaker_factory_init(&impl->base);
+  impl->base.vtable = &client_handshaker_factory_vtable;
+  impl->ssl_context = ssl_context;
+  if (options->session_cache != nullptr) {
+    // Unref is called manually on factory destruction.
+    impl->session_cache =
+        reinterpret_cast<tsi::SslSessionLRUCache*>(options->session_cache)
+            ->Ref();
+    SSL_CTX_set_ex_data(ssl_context, g_ssl_ctx_ex_factory_index, impl);
+    SSL_CTX_sess_set_new_cb(ssl_context,
+                            server_handshaker_factory_new_session_callback);
+    SSL_CTX_set_session_cache_mode(ssl_context, SSL_SESS_CACHE_CLIENT);
+  }
+
+  do {
+    result = populate_ssl_context(ssl_context, options->pem_key_cert_pair,
+                                  options->cipher_suites);
+    if (result != TSI_OK) break;
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000
+    // X509_STORE_up_ref is only available since OpenSSL 1.1.
+    if (options->root_store != nullptr) {
+      X509_STORE_up_ref(options->root_store->store);
+      SSL_CTX_set_cert_store(ssl_context, options->root_store->store);
+    }
+#endif
+    if (OPENSSL_VERSION_NUMBER < 0x10100000 || options->root_store == nullptr) {
+      result = ssl_ctx_load_verification_certs(
+          ssl_context, options->pem_root_certs, strlen(options->pem_root_certs),
+          nullptr);
+      if (result != TSI_OK) {
+        gpr_log(GPR_ERROR, "Cannot load server root certificates.");
+        break;
+      }
+    }
+
+    if (options->num_alpn_protocols != 0) {
+      result = build_alpn_protocol_name_list(
+          options->alpn_protocols, options->num_alpn_protocols,
+          &impl->alpn_protocol_list, &impl->alpn_protocol_list_length);
+      if (result != TSI_OK) {
+        gpr_log(GPR_ERROR, "Building alpn list failed with error %s.",
+                tsi_result_to_string(result));
+        break;
+      }
+#if TSI_OPENSSL_ALPN_SUPPORT
+      GPR_ASSERT(impl->alpn_protocol_list_length < UINT_MAX);
+      if (SSL_CTX_set_alpn_protos(
+              ssl_context, impl->alpn_protocol_list,
+              static_cast<unsigned int>(impl->alpn_protocol_list_length))) {
+        gpr_log(GPR_ERROR, "Could not set alpn protocol list to context.");
+        result = TSI_INVALID_ARGUMENT;
+        break;
+      }
+#endif /* TSI_OPENSSL_ALPN_SUPPORT */
+      SSL_CTX_set_next_proto_select_cb(
+          ssl_context, client_handshaker_factory_npn_callback, impl);
+    }
+  } while (0);
+  if (result != TSI_OK) {
+    tsi_ssl_handshaker_factory_unref(&impl->base);
+    return result;
+  }
+  if (options->skip_server_certificate_verification) {
+    SSL_CTX_set_verify(ssl_context, SSL_VERIFY_PEER, NullVerifyCallback);
+  } else {
+    SSL_CTX_set_verify(ssl_context, SSL_VERIFY_PEER, nullptr);
+  }
+  /* TODO(jboeuf): Add revocation verification. */
+
+  *factory = impl;
+  return TSI_OK;
+}
+
+static tsi_ssl_handshaker_factory_vtable server_handshaker_factory_vtable = {
+    tsi_ssl_server_handshaker_factory_destroy};
+
+tsi_result tsi_create_ssl_server_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    int force_client_auth, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_server_handshaker_factory** factory) {
+  return tsi_create_ssl_server_handshaker_factory_ex(
+      pem_key_cert_pairs, num_key_cert_pairs, pem_client_root_certs,
+      force_client_auth ? TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
+                        : TSI_DONT_REQUEST_CLIENT_CERTIFICATE,
+      cipher_suites, alpn_protocols, num_alpn_protocols, factory);
+}
+
+tsi_result tsi_create_ssl_server_handshaker_factory_ex(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    tsi_client_certificate_request_type client_certificate_request,
+    const char* cipher_suites, const char** alpn_protocols,
+    uint16_t num_alpn_protocols, tsi_ssl_server_handshaker_factory** factory) {
+  tsi_ssl_server_handshaker_options options;
+  options.pem_key_cert_pairs = pem_key_cert_pairs;
+  options.num_key_cert_pairs = num_key_cert_pairs;
+  options.pem_client_root_certs = pem_client_root_certs;
+  options.client_certificate_request = client_certificate_request;
+  options.cipher_suites = cipher_suites;
+  options.alpn_protocols = alpn_protocols;
+  options.num_alpn_protocols = num_alpn_protocols;
+  return tsi_create_ssl_server_handshaker_factory_with_options(&options,
+                                                               factory);
+}
+
+tsi_result tsi_create_ssl_server_handshaker_factory_with_options(
+    const tsi_ssl_server_handshaker_options* options,
+    tsi_ssl_server_handshaker_factory** factory) {
+  tsi_ssl_server_handshaker_factory* impl = nullptr;
+  tsi_result result = TSI_OK;
+  size_t i = 0;
+
+  gpr_once_init(&g_init_openssl_once, init_openssl);
+
+  if (factory == nullptr) return TSI_INVALID_ARGUMENT;
+  *factory = nullptr;
+  if (options->num_key_cert_pairs == 0 ||
+      options->pem_key_cert_pairs == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+
+  impl = static_cast<tsi_ssl_server_handshaker_factory*>(
+      gpr_zalloc(sizeof(*impl)));
+  tsi_ssl_handshaker_factory_init(&impl->base);
+  impl->base.vtable = &server_handshaker_factory_vtable;
+
+  impl->ssl_contexts = static_cast<SSL_CTX**>(
+      gpr_zalloc(options->num_key_cert_pairs * sizeof(SSL_CTX*)));
+  impl->ssl_context_x509_subject_names = static_cast<tsi_peer*>(
+      gpr_zalloc(options->num_key_cert_pairs * sizeof(tsi_peer)));
+  if (impl->ssl_contexts == nullptr ||
+      impl->ssl_context_x509_subject_names == nullptr) {
+    tsi_ssl_handshaker_factory_unref(&impl->base);
+    return TSI_OUT_OF_RESOURCES;
+  }
+  impl->ssl_context_count = options->num_key_cert_pairs;
+
+  if (options->num_alpn_protocols > 0) {
+    result = build_alpn_protocol_name_list(
+        options->alpn_protocols, options->num_alpn_protocols,
+        &impl->alpn_protocol_list, &impl->alpn_protocol_list_length);
+    if (result != TSI_OK) {
+      tsi_ssl_handshaker_factory_unref(&impl->base);
+      return result;
+    }
+  }
+
+  for (i = 0; i < options->num_key_cert_pairs; i++) {
+    do {
+#if defined(OPENSSL_NO_TLS1_2_METHOD) || OPENSSL_API_COMPAT >= 0x10100000L
+      impl->ssl_contexts[i] = SSL_CTX_new(TLS_method());
+#else
+      impl->ssl_contexts[i] = SSL_CTX_new(TLSv1_2_method());
+#endif
+      if (impl->ssl_contexts[i] == nullptr) {
+        gpr_log(GPR_ERROR, "Could not create ssl context.");
+        result = TSI_OUT_OF_RESOURCES;
+        break;
+      }
+      result = populate_ssl_context(impl->ssl_contexts[i],
+                                    &options->pem_key_cert_pairs[i],
+                                    options->cipher_suites);
+      if (result != TSI_OK) break;
+
+      // TODO(elessar): Provide ability to disable session ticket keys.
+
+      // Allow client cache sessions (it's needed for OpenSSL only).
+      int set_sid_ctx_result = SSL_CTX_set_session_id_context(
+          impl->ssl_contexts[i], kSslSessionIdContext,
+          GPR_ARRAY_SIZE(kSslSessionIdContext));
+      if (set_sid_ctx_result == 0) {
+        gpr_log(GPR_ERROR, "Failed to set session id context.");
+        result = TSI_INTERNAL_ERROR;
+        break;
+      }
+
+      if (options->session_ticket_key != nullptr) {
+        if (SSL_CTX_set_tlsext_ticket_keys(
+                impl->ssl_contexts[i],
+                const_cast<char*>(options->session_ticket_key),
+                options->session_ticket_key_size) == 0) {
+          gpr_log(GPR_ERROR, "Invalid STEK size.");
+          result = TSI_INVALID_ARGUMENT;
+          break;
+        }
+      }
+
+      if (options->pem_client_root_certs != nullptr) {
+        STACK_OF(X509_NAME)* root_names = nullptr;
+        result = ssl_ctx_load_verification_certs(
+            impl->ssl_contexts[i], options->pem_client_root_certs,
+            strlen(options->pem_client_root_certs), &root_names);
+        if (result != TSI_OK) {
+          gpr_log(GPR_ERROR, "Invalid verification certs.");
+          break;
+        }
+        SSL_CTX_set_client_CA_list(impl->ssl_contexts[i], root_names);
+      }
+      switch (options->client_certificate_request) {
+        case TSI_DONT_REQUEST_CLIENT_CERTIFICATE:
+          SSL_CTX_set_verify(impl->ssl_contexts[i], SSL_VERIFY_NONE, nullptr);
+          break;
+        case TSI_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
+          SSL_CTX_set_verify(impl->ssl_contexts[i], SSL_VERIFY_PEER,
+                             NullVerifyCallback);
+          break;
+        case TSI_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY:
+          SSL_CTX_set_verify(impl->ssl_contexts[i], SSL_VERIFY_PEER, nullptr);
+          break;
+        case TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
+          SSL_CTX_set_verify(impl->ssl_contexts[i],
+                             SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
+                             NullVerifyCallback);
+          break;
+        case TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY:
+          SSL_CTX_set_verify(impl->ssl_contexts[i],
+                             SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
+                             nullptr);
+          break;
+      }
+      /* TODO(jboeuf): Add revocation verification. */
+
+      result = tsi_ssl_extract_x509_subject_names_from_pem_cert(
+          options->pem_key_cert_pairs[i].cert_chain,
+          &impl->ssl_context_x509_subject_names[i]);
+      if (result != TSI_OK) break;
+
+      SSL_CTX_set_tlsext_servername_callback(
+          impl->ssl_contexts[i],
+          ssl_server_handshaker_factory_servername_callback);
+      SSL_CTX_set_tlsext_servername_arg(impl->ssl_contexts[i], impl);
+#if TSI_OPENSSL_ALPN_SUPPORT
+      SSL_CTX_set_alpn_select_cb(impl->ssl_contexts[i],
+                                 server_handshaker_factory_alpn_callback, impl);
+#endif /* TSI_OPENSSL_ALPN_SUPPORT */
+      SSL_CTX_set_next_protos_advertised_cb(
+          impl->ssl_contexts[i],
+          server_handshaker_factory_npn_advertised_callback, impl);
+    } while (0);
+
+    if (result != TSI_OK) {
+      tsi_ssl_handshaker_factory_unref(&impl->base);
+      return result;
+    }
+  }
+
+  *factory = impl;
+  return TSI_OK;
+}
+
+/* --- tsi_ssl utils. --- */
+
+int tsi_ssl_peer_matches_name(const tsi_peer* peer,
+                              grpc_core::StringView name) {
+  size_t i = 0;
+  size_t san_count = 0;
+  const tsi_peer_property* cn_property = nullptr;
+  int like_ip = looks_like_ip_address(name);
+
+  /* Check the SAN first. */
+  for (i = 0; i < peer->property_count; i++) {
+    const tsi_peer_property* property = &peer->properties[i];
+    if (property->name == nullptr) continue;
+    if (strcmp(property->name,
+               TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY) == 0) {
+      san_count++;
+
+      grpc_core::StringView entry(property->value.data, property->value.length);
+      if (!like_ip && does_entry_match_name(entry, name)) {
+        return 1;
+      } else if (like_ip && name == entry) {
+        /* IP Addresses are exact matches only. */
+        return 1;
+      }
+    } else if (strcmp(property->name,
+                      TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY) == 0) {
+      cn_property = property;
+    }
+  }
+
+  /* If there's no SAN, try the CN, but only if its not like an IP Address */
+  if (san_count == 0 && cn_property != nullptr && !like_ip) {
+    if (does_entry_match_name(grpc_core::StringView(cn_property->value.data,
+                                                    cn_property->value.length),
+                              name)) {
+      return 1;
+    }
+  }
+
+  return 0; /* Not found. */
+}
+
+/* --- Testing support. --- */
+const tsi_ssl_handshaker_factory_vtable* tsi_ssl_handshaker_factory_swap_vtable(
+    tsi_ssl_handshaker_factory* factory,
+    tsi_ssl_handshaker_factory_vtable* new_vtable) {
+  GPR_ASSERT(factory != nullptr);
+  GPR_ASSERT(factory->vtable != nullptr);
+
+  const tsi_ssl_handshaker_factory_vtable* orig_vtable = factory->vtable;
+  factory->vtable = new_vtable;
+  return orig_vtable;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.h
new file mode 100644
index 0000000..d453308
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_transport_security.h	
@@ -0,0 +1,357 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/gprpp/string_view.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern "C" {
+#if COCOAPODS==1
+  #include <openssl_grpc/x509.h>
+#else
+  #include <openssl/x509.h>
+#endif
+}
+
+/* Value for the TSI_CERTIFICATE_TYPE_PEER_PROPERTY property for X509 certs. */
+#define TSI_X509_CERTIFICATE_TYPE "X509"
+
+/* This property is of type TSI_PEER_PROPERTY_STRING.  */
+#define TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY "x509_subject_common_name"
+#define TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY \
+  "x509_subject_alternative_name"
+#define TSI_SSL_SESSION_REUSED_PEER_PROPERTY "ssl_session_reused"
+
+#define TSI_X509_PEM_CERT_PROPERTY "x509_pem_cert"
+
+#define TSI_X509_PEM_CERT_CHAIN_PROPERTY "x509_pem_cert_chain"
+
+#define TSI_SSL_ALPN_SELECTED_PROTOCOL "ssl_alpn_selected_protocol"
+
+/* --- tsi_ssl_root_certs_store object ---
+
+   This object stores SSL root certificates. It can be shared by multiple SSL
+   context. */
+typedef struct tsi_ssl_root_certs_store tsi_ssl_root_certs_store;
+
+/* Given a NULL-terminated string containing the PEM encoding of the root
+   certificates, creates a tsi_ssl_root_certs_store object. */
+tsi_ssl_root_certs_store* tsi_ssl_root_certs_store_create(
+    const char* pem_roots);
+
+/* Destroys the tsi_ssl_root_certs_store object. */
+void tsi_ssl_root_certs_store_destroy(tsi_ssl_root_certs_store* self);
+
+/* --- tsi_ssl_session_cache object ---
+
+   Cache for SSL sessions for sessions resumption.  */
+
+typedef struct tsi_ssl_session_cache tsi_ssl_session_cache;
+
+/* Create LRU cache for SSL sessions with \a capacity.  */
+tsi_ssl_session_cache* tsi_ssl_session_cache_create_lru(size_t capacity);
+
+/* Increment reference counter of \a cache.  */
+void tsi_ssl_session_cache_ref(tsi_ssl_session_cache* cache);
+
+/* Decrement reference counter of \a cache.  */
+void tsi_ssl_session_cache_unref(tsi_ssl_session_cache* cache);
+
+/* --- tsi_ssl_client_handshaker_factory object ---
+
+   This object creates a client tsi_handshaker objects implemented in terms of
+   the TLS 1.2 specificiation.  */
+
+typedef struct tsi_ssl_client_handshaker_factory
+    tsi_ssl_client_handshaker_factory;
+
+/* Object that holds a private key / certificate chain pair in PEM format. */
+typedef struct {
+  /* private_key is the NULL-terminated string containing the PEM encoding of
+     the client's private key. */
+  const char* private_key;
+
+  /* cert_chain is the NULL-terminated string containing the PEM encoding of
+     the client's certificate chain. */
+  const char* cert_chain;
+} tsi_ssl_pem_key_cert_pair;
+
+/* TO BE DEPRECATED.
+   Creates a client handshaker factory.
+   - pem_key_cert_pair is a pointer to the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair.
+   - pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the server root certificates.
+   - cipher_suites contains an optional list of the ciphers that the client
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter.
+   - alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL.
+   - num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be NULL.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid.  */
+tsi_result tsi_create_ssl_client_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pair,
+    const char* pem_root_certs, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_client_handshaker_factory** factory);
+
+struct tsi_ssl_client_handshaker_options {
+  /* pem_key_cert_pair is a pointer to the object containing client's private
+     key and certificate chain. This parameter can be NULL if the client does
+     not have such a key/cert pair. */
+  const tsi_ssl_pem_key_cert_pair* pem_key_cert_pair;
+  /* pem_roots_cert is the NULL-terminated string containing the PEM encoding of
+     the client root certificates. */
+  const char* pem_root_certs;
+  /* root_store is a pointer to the ssl_root_certs_store object. If root_store
+    is not nullptr and SSL implementation permits, root_store will be used as
+    root certificates. Otherwise, pem_roots_cert will be used to load server
+    root certificates. */
+  const tsi_ssl_root_certs_store* root_store;
+  /* cipher_suites contains an optional list of the ciphers that the client
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter. */
+  const char* cipher_suites;
+  /* alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL. */
+  const char** alpn_protocols;
+  /* num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be
+     NULL. */
+  size_t num_alpn_protocols;
+  /* ssl_session_cache is a cache for reusable client-side sessions. */
+  tsi_ssl_session_cache* session_cache;
+
+  /* skip server certificate verification. */
+  bool skip_server_certificate_verification;
+
+  tsi_ssl_client_handshaker_options()
+      : pem_key_cert_pair(nullptr),
+        pem_root_certs(nullptr),
+        root_store(nullptr),
+        cipher_suites(nullptr),
+        alpn_protocols(nullptr),
+        num_alpn_protocols(0),
+        session_cache(nullptr),
+        skip_server_certificate_verification(false) {}
+};
+
+/* Creates a client handshaker factory.
+   - options is the options used to create a factory.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid. */
+tsi_result tsi_create_ssl_client_handshaker_factory_with_options(
+    const tsi_ssl_client_handshaker_options* options,
+    tsi_ssl_client_handshaker_factory** factory);
+
+/* Creates a client handshaker.
+  - self is the factory from which the handshaker will be created.
+  - server_name_indication indicates the name of the server the client is
+    trying to connect to which will be relayed to the server using the SNI
+    extension.
+  - handshaker is the address of the handshaker pointer to be created.
+
+  - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+    where a parameter is invalid.  */
+tsi_result tsi_ssl_client_handshaker_factory_create_handshaker(
+    tsi_ssl_client_handshaker_factory* self, const char* server_name_indication,
+    tsi_handshaker** handshaker);
+
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_client_handshaker_factory_unref(
+    tsi_ssl_client_handshaker_factory* factory);
+
+/* --- tsi_ssl_server_handshaker_factory object ---
+
+   This object creates a client tsi_handshaker objects implemented in terms of
+   the TLS 1.2 specificiation.  */
+
+typedef struct tsi_ssl_server_handshaker_factory
+    tsi_ssl_server_handshaker_factory;
+
+/* TO BE DEPRECATED.
+   Creates a server handshaker factory.
+   - pem_key_cert_pairs is an array private key / certificate chains of the
+     server.
+   - num_key_cert_pairs is the number of items in the pem_key_cert_pairs array.
+   - pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the client root certificates. This parameter may be NULL if the server
+     does not want the client to be authenticated with SSL.
+   - cipher_suites contains an optional list of the ciphers that the server
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter.
+   - alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL.
+   - num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be NULL.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid.  */
+tsi_result tsi_create_ssl_server_handshaker_factory(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    int force_client_auth, const char* cipher_suites,
+    const char** alpn_protocols, uint16_t num_alpn_protocols,
+    tsi_ssl_server_handshaker_factory** factory);
+
+/* TO BE DEPRECATED.
+   Same as tsi_create_ssl_server_handshaker_factory method except uses
+   tsi_client_certificate_request_type to support more ways to handle client
+   certificate authentication.
+   - client_certificate_request, if set to non-zero will force the client to
+     authenticate with an SSL cert. Note that this option is ignored if
+     pem_client_root_certs is NULL or pem_client_roots_certs_size is 0 */
+tsi_result tsi_create_ssl_server_handshaker_factory_ex(
+    const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs,
+    size_t num_key_cert_pairs, const char* pem_client_root_certs,
+    tsi_client_certificate_request_type client_certificate_request,
+    const char* cipher_suites, const char** alpn_protocols,
+    uint16_t num_alpn_protocols, tsi_ssl_server_handshaker_factory** factory);
+
+struct tsi_ssl_server_handshaker_options {
+  /* pem_key_cert_pairs is an array private key / certificate chains of the
+     server. */
+  const tsi_ssl_pem_key_cert_pair* pem_key_cert_pairs;
+  /* num_key_cert_pairs is the number of items in the pem_key_cert_pairs
+     array. */
+  size_t num_key_cert_pairs;
+  /* pem_root_certs is the NULL-terminated string containing the PEM encoding
+     of the server root certificates. This parameter may be NULL if the server
+     does not want the client to be authenticated with SSL. */
+  const char* pem_client_root_certs;
+  /* client_certificate_request, if set to non-zero will force the client to
+     authenticate with an SSL cert. Note that this option is ignored if
+     pem_client_root_certs is NULL or pem_client_roots_certs_size is 0. */
+  tsi_client_certificate_request_type client_certificate_request;
+  /* cipher_suites contains an optional list of the ciphers that the server
+     supports. The format of this string is described in:
+     https://www.openssl.org/docs/apps/ciphers.html.
+     This parameter can be set to NULL to use the default set of ciphers.
+     TODO(jboeuf): Revisit the format of this parameter. */
+  const char* cipher_suites;
+  /* alpn_protocols is an array containing the NULL terminated protocol names
+     that the handshakers created with this factory support. This parameter can
+     be NULL. */
+  const char** alpn_protocols;
+  /* num_alpn_protocols is the number of alpn protocols and associated lengths
+     specified. If this parameter is 0, the other alpn parameters must be
+     NULL. */
+  uint16_t num_alpn_protocols;
+  /* session_ticket_key is optional key for encrypting session keys. If
+     parameter is not specified it must be NULL. */
+  const char* session_ticket_key;
+  /* session_ticket_key_size is a size of session ticket encryption key. */
+  size_t session_ticket_key_size;
+
+  tsi_ssl_server_handshaker_options()
+      : pem_key_cert_pairs(nullptr),
+        num_key_cert_pairs(0),
+        pem_client_root_certs(nullptr),
+        client_certificate_request(TSI_DONT_REQUEST_CLIENT_CERTIFICATE),
+        cipher_suites(nullptr),
+        alpn_protocols(nullptr),
+        num_alpn_protocols(0),
+        session_ticket_key(nullptr),
+        session_ticket_key_size(0) {}
+};
+
+/* Creates a server handshaker factory.
+   - options is the options used to create a factory.
+   - factory is the address of the factory pointer to be created.
+
+   - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+     where a parameter is invalid. */
+tsi_result tsi_create_ssl_server_handshaker_factory_with_options(
+    const tsi_ssl_server_handshaker_options* options,
+    tsi_ssl_server_handshaker_factory** factory);
+
+/* Creates a server handshaker.
+  - self is the factory from which the handshaker will be created.
+  - handshaker is the address of the handshaker pointer to be created.
+
+  - This method returns TSI_OK on success or TSI_INVALID_PARAMETER in the case
+    where a parameter is invalid.  */
+tsi_result tsi_ssl_server_handshaker_factory_create_handshaker(
+    tsi_ssl_server_handshaker_factory* self, tsi_handshaker** handshaker);
+
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_server_handshaker_factory_unref(
+    tsi_ssl_server_handshaker_factory* self);
+
+/* Util that checks that an ssl peer matches a specific name.
+   Still TODO(jboeuf):
+   - handle mixed case.
+   - handle %encoded chars.
+   - handle public suffix wildchar more strictly (e.g. *.co.uk) */
+int tsi_ssl_peer_matches_name(const tsi_peer* peer, grpc_core::StringView name);
+
+/* --- Testing support. ---
+
+   These functions and typedefs are not intended to be used outside of testing.
+   */
+
+/* Base type of client and server handshaker factories. */
+typedef struct tsi_ssl_handshaker_factory tsi_ssl_handshaker_factory;
+
+/* Function pointer to handshaker_factory destructor. */
+typedef void (*tsi_ssl_handshaker_factory_destructor)(
+    tsi_ssl_handshaker_factory* factory);
+
+/* Virtual table for tsi_ssl_handshaker_factory. */
+typedef struct {
+  tsi_ssl_handshaker_factory_destructor destroy;
+} tsi_ssl_handshaker_factory_vtable;
+
+/* Set destructor of handshaker_factory to new_destructor, returns previous
+   destructor. */
+const tsi_ssl_handshaker_factory_vtable* tsi_ssl_handshaker_factory_swap_vtable(
+    tsi_ssl_handshaker_factory* factory,
+    tsi_ssl_handshaker_factory_vtable* new_vtable);
+
+/* Exposed for testing only. */
+tsi_result tsi_ssl_extract_x509_subject_names_from_pem_cert(
+    const char* pem_cert, tsi_peer* peer);
+
+/* Exposed for testing only. */
+tsi_result tsi_ssl_get_cert_chain_contents(STACK_OF(X509) * peer_chain,
+                                           tsi_peer_property* property);
+
+#endif /* GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_types.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_types.h
new file mode 100644
index 0000000..b405b99
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/ssl_types.h	
@@ -0,0 +1,48 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_SSL_TYPES_H
+#define GRPC_CORE_TSI_SSL_TYPES_H
+
+/* A collection of macros to cast between various integer types that are
+ * used differently between BoringSSL and OpenSSL:
+ * TSI_INT_AS_SIZE(x):  convert 'int x' to a length parameter for an OpenSSL
+ *                      function
+ * TSI_SIZE_AS_SIZE(x): convert 'size_t x' to a length parameter for an OpenSSL
+ *                      function
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/grpc_shadow_boringssl.h"
+
+#if COCOAPODS==1
+  #include <openssl_grpc/ssl.h>
+#else
+  #include <openssl/ssl.h>
+#endif
+
+#ifdef OPENSSL_IS_BORINGSSL
+#define TSI_INT_AS_SIZE(x) ((size_t)(x))
+#define TSI_SIZE_AS_SIZE(x) (x)
+#else
+#define TSI_INT_AS_SIZE(x) (x)
+#define TSI_SIZE_AS_SIZE(x) ((int)(x))
+#endif
+
+#endif /* GRPC_CORE_TSI_SSL_TYPES_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.cc
new file mode 100644
index 0000000..035e7cc
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.cc	
@@ -0,0 +1,370 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/transport_security.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+/* --- Tracing. --- */
+
+grpc_core::TraceFlag tsi_tracing_enabled(false, "tsi");
+
+/* --- tsi_result common implementation. --- */
+
+const char* tsi_result_to_string(tsi_result result) {
+  switch (result) {
+    case TSI_OK:
+      return "TSI_OK";
+    case TSI_UNKNOWN_ERROR:
+      return "TSI_UNKNOWN_ERROR";
+    case TSI_INVALID_ARGUMENT:
+      return "TSI_INVALID_ARGUMENT";
+    case TSI_PERMISSION_DENIED:
+      return "TSI_PERMISSION_DENIED";
+    case TSI_INCOMPLETE_DATA:
+      return "TSI_INCOMPLETE_DATA";
+    case TSI_FAILED_PRECONDITION:
+      return "TSI_FAILED_PRECONDITION";
+    case TSI_UNIMPLEMENTED:
+      return "TSI_UNIMPLEMENTED";
+    case TSI_INTERNAL_ERROR:
+      return "TSI_INTERNAL_ERROR";
+    case TSI_DATA_CORRUPTED:
+      return "TSI_DATA_CORRUPTED";
+    case TSI_NOT_FOUND:
+      return "TSI_NOT_FOUND";
+    case TSI_PROTOCOL_FAILURE:
+      return "TSI_PROTOCOL_FAILURE";
+    case TSI_HANDSHAKE_IN_PROGRESS:
+      return "TSI_HANDSHAKE_IN_PROGRESS";
+    case TSI_OUT_OF_RESOURCES:
+      return "TSI_OUT_OF_RESOURCES";
+    case TSI_ASYNC:
+      return "TSI_ASYNC";
+    default:
+      return "UNKNOWN";
+  }
+}
+
+const char* tsi_security_level_to_string(tsi_security_level security_level) {
+  switch (security_level) {
+    case TSI_SECURITY_NONE:
+      return "TSI_SECURITY_NONE";
+    case TSI_INTEGRITY_ONLY:
+      return "TSI_INTEGRITY_ONLY";
+    case TSI_PRIVACY_AND_INTEGRITY:
+      return "TSI_PRIVACY_AND_INTEGRITY";
+    default:
+      return "UNKNOWN";
+  }
+}
+
+/* --- tsi_frame_protector common implementation. ---
+
+   Calls specific implementation after state/input validation. */
+
+tsi_result tsi_frame_protector_protect(tsi_frame_protector* self,
+                                       const unsigned char* unprotected_bytes,
+                                       size_t* unprotected_bytes_size,
+                                       unsigned char* protected_output_frames,
+                                       size_t* protected_output_frames_size) {
+  if (self == nullptr || self->vtable == nullptr ||
+      unprotected_bytes == nullptr || unprotected_bytes_size == nullptr ||
+      protected_output_frames == nullptr ||
+      protected_output_frames_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->protect == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->protect(self, unprotected_bytes, unprotected_bytes_size,
+                               protected_output_frames,
+                               protected_output_frames_size);
+}
+
+tsi_result tsi_frame_protector_protect_flush(
+    tsi_frame_protector* self, unsigned char* protected_output_frames,
+    size_t* protected_output_frames_size, size_t* still_pending_size) {
+  if (self == nullptr || self->vtable == nullptr ||
+      protected_output_frames == nullptr ||
+      protected_output_frames_size == nullptr ||
+      still_pending_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->protect_flush == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->protect_flush(self, protected_output_frames,
+                                     protected_output_frames_size,
+                                     still_pending_size);
+}
+
+tsi_result tsi_frame_protector_unprotect(
+    tsi_frame_protector* self, const unsigned char* protected_frames_bytes,
+    size_t* protected_frames_bytes_size, unsigned char* unprotected_bytes,
+    size_t* unprotected_bytes_size) {
+  if (self == nullptr || self->vtable == nullptr ||
+      protected_frames_bytes == nullptr ||
+      protected_frames_bytes_size == nullptr || unprotected_bytes == nullptr ||
+      unprotected_bytes_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->unprotect == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->unprotect(self, protected_frames_bytes,
+                                 protected_frames_bytes_size, unprotected_bytes,
+                                 unprotected_bytes_size);
+}
+
+void tsi_frame_protector_destroy(tsi_frame_protector* self) {
+  if (self == nullptr) return;
+  self->vtable->destroy(self);
+}
+
+/* --- tsi_handshaker common implementation. ---
+
+   Calls specific implementation after state/input validation. */
+
+tsi_result tsi_handshaker_get_bytes_to_send_to_peer(tsi_handshaker* self,
+                                                    unsigned char* bytes,
+                                                    size_t* bytes_size) {
+  if (self == nullptr || self->vtable == nullptr || bytes == nullptr ||
+      bytes_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->frame_protector_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (self->vtable->get_bytes_to_send_to_peer == nullptr)
+    return TSI_UNIMPLEMENTED;
+  return self->vtable->get_bytes_to_send_to_peer(self, bytes, bytes_size);
+}
+
+tsi_result tsi_handshaker_process_bytes_from_peer(tsi_handshaker* self,
+                                                  const unsigned char* bytes,
+                                                  size_t* bytes_size) {
+  if (self == nullptr || self->vtable == nullptr || bytes == nullptr ||
+      bytes_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->frame_protector_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (self->vtable->process_bytes_from_peer == nullptr)
+    return TSI_UNIMPLEMENTED;
+  return self->vtable->process_bytes_from_peer(self, bytes, bytes_size);
+}
+
+tsi_result tsi_handshaker_get_result(tsi_handshaker* self) {
+  if (self == nullptr || self->vtable == nullptr) return TSI_INVALID_ARGUMENT;
+  if (self->frame_protector_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (self->vtable->get_result == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->get_result(self);
+}
+
+tsi_result tsi_handshaker_extract_peer(tsi_handshaker* self, tsi_peer* peer) {
+  if (self == nullptr || self->vtable == nullptr || peer == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  memset(peer, 0, sizeof(tsi_peer));
+  if (self->frame_protector_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (tsi_handshaker_get_result(self) != TSI_OK) {
+    return TSI_FAILED_PRECONDITION;
+  }
+  if (self->vtable->extract_peer == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->extract_peer(self, peer);
+}
+
+tsi_result tsi_handshaker_create_frame_protector(
+    tsi_handshaker* self, size_t* max_protected_frame_size,
+    tsi_frame_protector** protector) {
+  tsi_result result;
+  if (self == nullptr || self->vtable == nullptr || protector == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->frame_protector_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (tsi_handshaker_get_result(self) != TSI_OK) return TSI_FAILED_PRECONDITION;
+  if (self->vtable->create_frame_protector == nullptr) return TSI_UNIMPLEMENTED;
+  result = self->vtable->create_frame_protector(self, max_protected_frame_size,
+                                                protector);
+  if (result == TSI_OK) {
+    self->frame_protector_created = true;
+  }
+  return result;
+}
+
+tsi_result tsi_handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** handshaker_result,
+    tsi_handshaker_on_next_done_cb cb, void* user_data) {
+  if (self == nullptr || self->vtable == nullptr) return TSI_INVALID_ARGUMENT;
+  if (self->handshaker_result_created) return TSI_FAILED_PRECONDITION;
+  if (self->handshake_shutdown) return TSI_HANDSHAKE_SHUTDOWN;
+  if (self->vtable->next == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->next(self, received_bytes, received_bytes_size,
+                            bytes_to_send, bytes_to_send_size,
+                            handshaker_result, cb, user_data);
+}
+
+void tsi_handshaker_shutdown(tsi_handshaker* self) {
+  if (self == nullptr || self->vtable == nullptr) return;
+  if (self->vtable->shutdown != nullptr) {
+    self->vtable->shutdown(self);
+  }
+  self->handshake_shutdown = true;
+}
+
+void tsi_handshaker_destroy(tsi_handshaker* self) {
+  if (self == nullptr) return;
+  self->vtable->destroy(self);
+}
+
+/* --- tsi_handshaker_result implementation. --- */
+
+tsi_result tsi_handshaker_result_extract_peer(const tsi_handshaker_result* self,
+                                              tsi_peer* peer) {
+  if (self == nullptr || self->vtable == nullptr || peer == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  memset(peer, 0, sizeof(tsi_peer));
+  if (self->vtable->extract_peer == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->extract_peer(self, peer);
+}
+
+tsi_result tsi_handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* self, size_t* max_protected_frame_size,
+    tsi_frame_protector** protector) {
+  if (self == nullptr || self->vtable == nullptr || protector == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->create_frame_protector == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->create_frame_protector(self, max_protected_frame_size,
+                                              protector);
+}
+
+tsi_result tsi_handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* bytes_size) {
+  if (self == nullptr || self->vtable == nullptr || bytes == nullptr ||
+      bytes_size == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->get_unused_bytes == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->get_unused_bytes(self, bytes, bytes_size);
+}
+
+void tsi_handshaker_result_destroy(tsi_handshaker_result* self) {
+  if (self == nullptr) return;
+  self->vtable->destroy(self);
+}
+
+/* --- tsi_peer implementation. --- */
+
+tsi_peer_property tsi_init_peer_property(void) {
+  tsi_peer_property property;
+  memset(&property, 0, sizeof(tsi_peer_property));
+  return property;
+}
+
+static void tsi_peer_destroy_list_property(tsi_peer_property* children,
+                                           size_t child_count) {
+  size_t i;
+  for (i = 0; i < child_count; i++) {
+    tsi_peer_property_destruct(&children[i]);
+  }
+  gpr_free(children);
+}
+
+void tsi_peer_property_destruct(tsi_peer_property* property) {
+  if (property->name != nullptr) {
+    gpr_free(property->name);
+  }
+  if (property->value.data != nullptr) {
+    gpr_free(property->value.data);
+  }
+  *property = tsi_init_peer_property(); /* Reset everything to 0. */
+}
+
+void tsi_peer_destruct(tsi_peer* self) {
+  if (self == nullptr) return;
+  if (self->properties != nullptr) {
+    tsi_peer_destroy_list_property(self->properties, self->property_count);
+    self->properties = nullptr;
+  }
+  self->property_count = 0;
+}
+
+tsi_result tsi_construct_allocated_string_peer_property(
+    const char* name, size_t value_length, tsi_peer_property* property) {
+  *property = tsi_init_peer_property();
+  if (name != nullptr) property->name = gpr_strdup(name);
+  if (value_length > 0) {
+    property->value.data = static_cast<char*>(gpr_zalloc(value_length));
+    property->value.length = value_length;
+  }
+  return TSI_OK;
+}
+
+tsi_result tsi_construct_string_peer_property_from_cstring(
+    const char* name, const char* value, tsi_peer_property* property) {
+  return tsi_construct_string_peer_property(name, value, strlen(value),
+                                            property);
+}
+
+tsi_result tsi_construct_string_peer_property(const char* name,
+                                              const char* value,
+                                              size_t value_length,
+                                              tsi_peer_property* property) {
+  tsi_result result = tsi_construct_allocated_string_peer_property(
+      name, value_length, property);
+  if (result != TSI_OK) return result;
+  if (value_length > 0) {
+    memcpy(property->value.data, value, value_length);
+  }
+  return TSI_OK;
+}
+
+tsi_result tsi_construct_peer(size_t property_count, tsi_peer* peer) {
+  memset(peer, 0, sizeof(tsi_peer));
+  if (property_count > 0) {
+    peer->properties = static_cast<tsi_peer_property*>(
+        gpr_zalloc(property_count * sizeof(tsi_peer_property)));
+    peer->property_count = property_count;
+  }
+  return TSI_OK;
+}
+
+const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* peer,
+                                                       const char* name) {
+  size_t i;
+  if (peer == nullptr) return nullptr;
+  for (i = 0; i < peer->property_count; i++) {
+    const tsi_peer_property* property = &peer->properties[i];
+    if (name == nullptr && property->name == nullptr) {
+      return property;
+    }
+    if (name != nullptr && property->name != nullptr &&
+        strcmp(property->name, name) == 0) {
+      return property;
+    }
+  }
+  return nullptr;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.h
new file mode 100644
index 0000000..482d300
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security.h	
@@ -0,0 +1,130 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern grpc_core::TraceFlag tsi_tracing_enabled;
+
+/* Base for tsi_frame_protector implementations.
+   See transport_security_interface.h for documentation. */
+typedef struct {
+  tsi_result (*protect)(tsi_frame_protector* self,
+                        const unsigned char* unprotected_bytes,
+                        size_t* unprotected_bytes_size,
+                        unsigned char* protected_output_frames,
+                        size_t* protected_output_frames_size);
+  tsi_result (*protect_flush)(tsi_frame_protector* self,
+                              unsigned char* protected_output_frames,
+                              size_t* protected_output_frames_size,
+                              size_t* still_pending_size);
+  tsi_result (*unprotect)(tsi_frame_protector* self,
+                          const unsigned char* protected_frames_bytes,
+                          size_t* protected_frames_bytes_size,
+                          unsigned char* unprotected_bytes,
+                          size_t* unprotected_bytes_size);
+  void (*destroy)(tsi_frame_protector* self);
+} tsi_frame_protector_vtable;
+
+struct tsi_frame_protector {
+  const tsi_frame_protector_vtable* vtable;
+};
+
+/* Base for tsi_handshaker implementations.
+   See transport_security_interface.h for documentation. */
+typedef struct {
+  tsi_result (*get_bytes_to_send_to_peer)(tsi_handshaker* self,
+                                          unsigned char* bytes,
+                                          size_t* bytes_size);
+  tsi_result (*process_bytes_from_peer)(tsi_handshaker* self,
+                                        const unsigned char* bytes,
+                                        size_t* bytes_size);
+  tsi_result (*get_result)(tsi_handshaker* self);
+  tsi_result (*extract_peer)(tsi_handshaker* self, tsi_peer* peer);
+  tsi_result (*create_frame_protector)(tsi_handshaker* self,
+                                       size_t* max_protected_frame_size,
+                                       tsi_frame_protector** protector);
+  void (*destroy)(tsi_handshaker* self);
+  tsi_result (*next)(tsi_handshaker* self, const unsigned char* received_bytes,
+                     size_t received_bytes_size,
+                     const unsigned char** bytes_to_send,
+                     size_t* bytes_to_send_size,
+                     tsi_handshaker_result** handshaker_result,
+                     tsi_handshaker_on_next_done_cb cb, void* user_data);
+  void (*shutdown)(tsi_handshaker* self);
+} tsi_handshaker_vtable;
+
+struct tsi_handshaker {
+  const tsi_handshaker_vtable* vtable;
+  bool frame_protector_created;
+  bool handshaker_result_created;
+  bool handshake_shutdown;
+};
+
+/* Base for tsi_handshaker_result implementations.
+   See transport_security_interface.h for documentation.
+   The exec_ctx parameter in create_zero_copy_grpc_protector is supposed to be
+   of type grpc_exec_ctx*, but we're using void* instead to avoid making the TSI
+   API depend on grpc. The create_zero_copy_grpc_protector() method is only used
+   in grpc, where we do need the exec_ctx passed through, but the API still
+   needs to compile in other applications, where grpc_exec_ctx is not defined.
+*/
+typedef struct {
+  tsi_result (*extract_peer)(const tsi_handshaker_result* self, tsi_peer* peer);
+  tsi_result (*create_zero_copy_grpc_protector)(
+      const tsi_handshaker_result* self,
+      size_t* max_output_protected_frame_size,
+      tsi_zero_copy_grpc_protector** protector);
+  tsi_result (*create_frame_protector)(const tsi_handshaker_result* self,
+                                       size_t* max_output_protected_frame_size,
+                                       tsi_frame_protector** protector);
+  tsi_result (*get_unused_bytes)(const tsi_handshaker_result* self,
+                                 const unsigned char** bytes,
+                                 size_t* bytes_size);
+  void (*destroy)(tsi_handshaker_result* self);
+} tsi_handshaker_result_vtable;
+
+struct tsi_handshaker_result {
+  const tsi_handshaker_result_vtable* vtable;
+};
+
+/* Peer and property construction/destruction functions. */
+tsi_result tsi_construct_peer(size_t property_count, tsi_peer* peer);
+tsi_peer_property tsi_init_peer_property(void);
+void tsi_peer_property_destruct(tsi_peer_property* property);
+tsi_result tsi_construct_string_peer_property(const char* name,
+                                              const char* value,
+                                              size_t value_length,
+                                              tsi_peer_property* property);
+tsi_result tsi_construct_allocated_string_peer_property(
+    const char* name, size_t value_length, tsi_peer_property* property);
+tsi_result tsi_construct_string_peer_property_from_cstring(
+    const char* name, const char* value, tsi_peer_property* property);
+const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* peer,
+                                                       const char* name);
+/* Utils. */
+char* tsi_strdup(const char* src); /* Sadly, no strdup in C89. */
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.cc b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.cc
new file mode 100644
index 0000000..cec8726
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.cc	
@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/tsi/transport_security_grpc.h"
+
+/* This method creates a tsi_zero_copy_grpc_protector object.  */
+tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector) {
+  if (self == nullptr || self->vtable == nullptr || protector == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->create_zero_copy_grpc_protector == nullptr) {
+    return TSI_UNIMPLEMENTED;
+  }
+  return self->vtable->create_zero_copy_grpc_protector(
+      self, max_output_protected_frame_size, protector);
+}
+
+/* --- tsi_zero_copy_grpc_protector common implementation. ---
+
+   Calls specific implementation after state/input validation. */
+
+tsi_result tsi_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices) {
+  if (self == nullptr || self->vtable == nullptr ||
+      unprotected_slices == nullptr || protected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->protect == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->protect(self, unprotected_slices, protected_slices);
+}
+
+tsi_result tsi_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices) {
+  if (self == nullptr || self->vtable == nullptr ||
+      protected_slices == nullptr || unprotected_slices == nullptr) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  if (self->vtable->unprotect == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->unprotect(self, protected_slices, unprotected_slices);
+}
+
+void tsi_zero_copy_grpc_protector_destroy(tsi_zero_copy_grpc_protector* self) {
+  if (self == nullptr) return;
+  self->vtable->destroy(self);
+}
+
+tsi_result tsi_zero_copy_grpc_protector_max_frame_size(
+    tsi_zero_copy_grpc_protector* self, size_t* max_frame_size) {
+  if (self == nullptr || max_frame_size == nullptr) return TSI_INVALID_ARGUMENT;
+  if (self->vtable->max_frame_size == nullptr) return TSI_UNIMPLEMENTED;
+  return self->vtable->max_frame_size(self, max_frame_size);
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.h
new file mode 100644
index 0000000..d33fa0b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_grpc.h	
@@ -0,0 +1,80 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/slice_buffer.h>
+#include "src/core/tsi/transport_security.h"
+
+/* This method creates a tsi_zero_copy_grpc_protector object. It return TSI_OK
+   assuming there is no fatal error.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector** protector);
+
+/* -- tsi_zero_copy_grpc_protector object --  */
+
+/* Outputs protected frames.
+   - unprotected_slices is the unprotected data to be protected.
+   - protected_slices is the protected output frames. One or more frames
+     may be produced in this protect function.
+   - This method returns TSI_OK in case of success or a specific error code in
+     case of failure.  */
+tsi_result tsi_zero_copy_grpc_protector_protect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* unprotected_slices,
+    grpc_slice_buffer* protected_slices);
+
+/* Outputs unprotected bytes.
+   - protected_slices is the bytes of protected frames.
+   - unprotected_slices is the unprotected output data.
+   - This method returns TSI_OK in case of success. Success includes cases where
+     there is not enough data to output in which case unprotected_slices has 0
+     bytes.  */
+tsi_result tsi_zero_copy_grpc_protector_unprotect(
+    tsi_zero_copy_grpc_protector* self, grpc_slice_buffer* protected_slices,
+    grpc_slice_buffer* unprotected_slices);
+
+/* Destroys the tsi_zero_copy_grpc_protector object.  */
+void tsi_zero_copy_grpc_protector_destroy(tsi_zero_copy_grpc_protector* self);
+
+/* Returns value of max protected frame size. Useful for testing. */
+tsi_result tsi_zero_copy_grpc_protector_max_frame_size(
+    tsi_zero_copy_grpc_protector* self, size_t* max_frame_size);
+
+/* Base for tsi_zero_copy_grpc_protector implementations.  */
+typedef struct {
+  tsi_result (*protect)(tsi_zero_copy_grpc_protector* self,
+                        grpc_slice_buffer* unprotected_slices,
+                        grpc_slice_buffer* protected_slices);
+  tsi_result (*unprotect)(tsi_zero_copy_grpc_protector* self,
+                          grpc_slice_buffer* protected_slices,
+                          grpc_slice_buffer* unprotected_slices);
+  void (*destroy)(tsi_zero_copy_grpc_protector* self);
+  tsi_result (*max_frame_size)(tsi_zero_copy_grpc_protector* self,
+                               size_t* max_frame_size);
+} tsi_zero_copy_grpc_protector_vtable;
+
+struct tsi_zero_copy_grpc_protector {
+  const tsi_zero_copy_grpc_protector_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_GRPC_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_interface.h b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_interface.h
new file mode 100644
index 0000000..8b4c929
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/src/core/tsi/transport_security_interface.h	
@@ -0,0 +1,476 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+
+#include <grpc/support/port_platform.h>
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "src/core/lib/debug/trace.h"
+
+/* --- tsi result ---  */
+
+typedef enum {
+  TSI_OK = 0,
+  TSI_UNKNOWN_ERROR = 1,
+  TSI_INVALID_ARGUMENT = 2,
+  TSI_PERMISSION_DENIED = 3,
+  TSI_INCOMPLETE_DATA = 4,
+  TSI_FAILED_PRECONDITION = 5,
+  TSI_UNIMPLEMENTED = 6,
+  TSI_INTERNAL_ERROR = 7,
+  TSI_DATA_CORRUPTED = 8,
+  TSI_NOT_FOUND = 9,
+  TSI_PROTOCOL_FAILURE = 10,
+  TSI_HANDSHAKE_IN_PROGRESS = 11,
+  TSI_OUT_OF_RESOURCES = 12,
+  TSI_ASYNC = 13,
+  TSI_HANDSHAKE_SHUTDOWN = 14,
+} tsi_result;
+
+typedef enum {
+  TSI_SECURITY_MIN,
+  TSI_SECURITY_NONE = TSI_SECURITY_MIN,
+  TSI_INTEGRITY_ONLY,
+  TSI_PRIVACY_AND_INTEGRITY,
+  TSI_SECURITY_MAX = TSI_PRIVACY_AND_INTEGRITY,
+} tsi_security_level;
+
+typedef enum {
+  // Default option
+  TSI_DONT_REQUEST_CLIENT_CERTIFICATE,
+  TSI_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  TSI_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY,
+  TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY,
+  TSI_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY,
+} tsi_client_certificate_request_type;
+
+const char* tsi_result_to_string(tsi_result result);
+const char* tsi_security_level_to_string(tsi_security_level security_level);
+
+/* --- tsi tracing --- */
+
+extern grpc_core::TraceFlag tsi_tracing_enabled;
+
+/* -- tsi_zero_copy_grpc_protector object --
+
+  This object protects and unprotects grpc slice buffers with zero or minimized
+  memory copy once the handshake is done. Implementations of this object must be
+  thread compatible. This object depends on grpc and the details of this object
+  is defined in transport_security_grpc.h.  */
+
+typedef struct tsi_zero_copy_grpc_protector tsi_zero_copy_grpc_protector;
+
+/* --- tsi_frame_protector object ---
+
+  This object protects and unprotects buffers once the handshake is done.
+  Implementations of this object must be thread compatible.  */
+
+typedef struct tsi_frame_protector tsi_frame_protector;
+
+/* Outputs protected frames.
+   - unprotected_bytes is an input only parameter and points to the data
+     to be protected.
+   - unprotected_bytes_size is an input/output parameter used by the caller to
+     specify how many bytes are available in unprotected_bytes. The output
+     value is the number of bytes consumed during the call.
+   - protected_output_frames points to a buffer allocated by the caller that
+     will be written.
+   - protected_output_frames_size is an input/output parameter used by the
+     caller to specify how many bytes are available in protected_output_frames.
+     As an output, this value indicates the number of bytes written.
+   - This method returns TSI_OK in case of success or a specific error code in
+     case of failure. Note that even if all the input unprotected bytes are
+     consumed, they may not have been processed into the returned protected
+     output frames. The caller should call the protect_flush method
+     to make sure that there are no more protected bytes buffered in the
+     protector.
+
+   A typical way to call this method would be:
+
+   ------------------------------------------------------------------------
+   unsigned char protected_buffer[4096];
+   size_t protected_buffer_size = sizeof(protected_buffer);
+   tsi_result result = TSI_OK;
+   while (message_size > 0) {
+     size_t protected_buffer_size_to_send = protected_buffer_size;
+     size_t processed_message_size = message_size;
+     result = tsi_frame_protector_protect(protector,
+                                          message_bytes,
+                                          &processed_message_size,
+                                          protected_buffer,
+                                          &protected_buffer_size_to_send);
+     if (result != TSI_OK) break;
+     send_bytes_to_peer(protected_buffer, protected_buffer_size_to_send);
+     message_bytes += processed_message_size;
+     message_size -= processed_message_size;
+
+     // Don't forget to flush.
+     if (message_size == 0) {
+       size_t still_pending_size;
+       do {
+         protected_buffer_size_to_send = protected_buffer_size;
+         result = tsi_frame_protector_protect_flush(
+             protector, protected_buffer,
+             &protected_buffer_size_to_send, &still_pending_size);
+         if (result != TSI_OK) break;
+         send_bytes_to_peer(protected_buffer, protected_buffer_size_to_send);
+       } while (still_pending_size > 0);
+     }
+   }
+
+   if (result != TSI_OK) HandleError(result);
+   ------------------------------------------------------------------------  */
+tsi_result tsi_frame_protector_protect(tsi_frame_protector* self,
+                                       const unsigned char* unprotected_bytes,
+                                       size_t* unprotected_bytes_size,
+                                       unsigned char* protected_output_frames,
+                                       size_t* protected_output_frames_size);
+
+/* Indicates that we need to flush the bytes buffered in the protector and get
+   the resulting frame.
+   - protected_output_frames points to a buffer allocated by the caller that
+     will be written.
+   - protected_output_frames_size is an input/output parameter used by the
+     caller to specify how many bytes are available in protected_output_frames.
+   - still_pending_bytes is an output parameter indicating the number of bytes
+     that still need to be flushed from the protector.*/
+tsi_result tsi_frame_protector_protect_flush(
+    tsi_frame_protector* self, unsigned char* protected_output_frames,
+    size_t* protected_output_frames_size, size_t* still_pending_size);
+
+/* Outputs unprotected bytes.
+   - protected_frames_bytes is an input only parameter and points to the
+     protected frames to be unprotected.
+   - protected_frames_bytes_size is an input/output only parameter used by the
+     caller to specify how many bytes are available in protected_bytes. The
+     output value is the number of bytes consumed during the call.
+     Implementations will buffer up to a frame of protected data.
+   - unprotected_bytes points to a buffer allocated by the caller that will be
+     written.
+   - unprotected_bytes_size is an input/output parameter used by the caller to
+     specify how many bytes are available in unprotected_bytes. This
+     value is expected to be at most max_protected_frame_size minus overhead
+     which means that max_protected_frame_size is a safe bet. The output value
+     is the number of bytes actually written.
+     If *unprotected_bytes_size is unchanged, there may be more data remaining
+     to unprotect, and the caller should call this function again.
+
+   - This method returns TSI_OK in case of success. Success includes cases where
+     there is not enough data to output a frame in which case
+     unprotected_bytes_size will be set to 0 and cases where the internal buffer
+     needs to be read before new protected data can be processed in which case
+     protected_frames_size will be set to 0.  */
+tsi_result tsi_frame_protector_unprotect(
+    tsi_frame_protector* self, const unsigned char* protected_frames_bytes,
+    size_t* protected_frames_bytes_size, unsigned char* unprotected_bytes,
+    size_t* unprotected_bytes_size);
+
+/* Destroys the tsi_frame_protector object.  */
+void tsi_frame_protector_destroy(tsi_frame_protector* self);
+
+/* --- tsi_peer objects ---
+
+   tsi_peer objects are a set of properties. The peer owns the properties.  */
+
+/* This property is of type TSI_PEER_PROPERTY_STRING.  */
+#define TSI_CERTIFICATE_TYPE_PEER_PROPERTY "certificate_type"
+
+/* This property represents security level of a channel. */
+#define TSI_SECURITY_LEVEL_PEER_PROPERTY "security_level"
+
+/* Property values may contain NULL characters just like C++ strings.
+   The length field gives the length of the string. */
+typedef struct tsi_peer_property {
+  char* name;
+  struct {
+    char* data;
+    size_t length;
+  } value;
+} tsi_peer_property;
+
+typedef struct {
+  tsi_peer_property* properties;
+  size_t property_count;
+} tsi_peer;
+
+/* Destructs the tsi_peer object. */
+void tsi_peer_destruct(tsi_peer* self);
+
+/*  --- tsi_handshaker_result object ---
+
+  This object contains all necessary handshake results and data such as peer
+  info, negotiated keys, unused handshake bytes, when the handshake completes.
+  Implementations of this object must be thread compatible.  */
+
+typedef struct tsi_handshaker_result tsi_handshaker_result;
+
+/* This method extracts tsi peer. It returns TSI_OK assuming there is no fatal
+   error.
+   The caller is responsible for destructing the peer.  */
+tsi_result tsi_handshaker_result_extract_peer(const tsi_handshaker_result* self,
+                                              tsi_peer* peer);
+
+/* This method creates a tsi_frame_protector object. It returns TSI_OK assuming
+   there is no fatal error.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_result_create_frame_protector(
+    const tsi_handshaker_result* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector);
+
+/* This method returns the unused bytes from the handshake. It returns TSI_OK
+   assuming there is no fatal error.
+   Ownership of the bytes is retained by the handshaker result. As a
+   consequence, the caller must not free the bytes.  */
+tsi_result tsi_handshaker_result_get_unused_bytes(
+    const tsi_handshaker_result* self, const unsigned char** bytes,
+    size_t* byte_size);
+
+/* This method releases the tsi_handshaker_handshaker object. After this method
+   is called, no other method can be called on the object.  */
+void tsi_handshaker_result_destroy(tsi_handshaker_result* self);
+
+/* --- tsi_handshaker objects ----
+
+   Implementations of this object must be thread compatible.
+
+   ------------------------------------------------------------------------
+
+   A typical usage supporting both synchronous and asynchronous TSI handshaker
+   implementations would be:
+
+   ------------------------------------------------------------------------
+
+   typedef struct {
+     tsi_handshaker *handshaker;
+     tsi_handshaker_result *handshaker_result;
+     unsigned char *handshake_buffer;
+     size_t handshake_buffer_size;
+     ...
+   } security_handshaker;
+
+   void do_handshake(security_handshaker *h, ...) {
+     // Start the handshake by the calling do_handshake_next.
+     do_handshake_next(h, NULL, 0);
+     ...
+   }
+
+   // This method is the callback function when data is received from the
+   // peer. This method will read bytes into the handshake buffer and call
+   // do_handshake_next.
+   void on_handshake_data_received_from_peer(void *user_data) {
+     security_handshaker *h = (security_handshaker *)user_data;
+     size_t bytes_received_size = h->handshake_buffer_size;
+     read_bytes_from_peer(h->handshake_buffer, &bytes_received_size);
+     do_handshake_next(h, h->handshake_buffer, bytes_received_size);
+   }
+
+   // This method processes a step of handshake, calling tsi_handshaker_next.
+   void do_handshake_next(security_handshaker *h,
+                          const unsigned char* bytes_received,
+                          size_t bytes_received_size) {
+     tsi_result status = TSI_OK;
+     unsigned char *bytes_to_send = NULL;
+     size_t bytes_to_send_size = 0;
+     tsi_handshaker_result *result = NULL;
+     status = tsi_handshaker_next(
+         handshaker, bytes_received, bytes_received_size, &bytes_to_send,
+         &bytes_to_send_size, &result, on_handshake_next_done, h);
+     // If TSI handshaker is asynchronous, on_handshake_next_done will be
+     // executed inside tsi_handshaker_next.
+     if (status == TSI_ASYNC) return;
+     // If TSI handshaker is synchronous, invoke callback directly in this
+     // thread.
+     on_handshake_next_done(status, (void *)h, bytes_to_send,
+                            bytes_to_send_size, result);
+   }
+
+   // This is the callback function to execute after tsi_handshaker_next.
+   // It is passed to tsi_handshaker_next as a function parameter.
+   void on_handshake_next_done(
+       tsi_result status, void *user_data, const unsigned char *bytes_to_send,
+       size_t bytes_to_send_size, tsi_handshaker_result *result) {
+     security_handshaker *h = (security_handshaker *)user_data;
+     if (status == TSI_INCOMPLETE_DATA) {
+       // Schedule an asynchronous read from the peer. If handshake data are
+       // received, on_handshake_data_received_from_peer will be called.
+       async_read_from_peer(..., ..., on_handshake_data_received_from_peer);
+       return;
+     }
+     if (status != TSI_OK) return;
+
+     if (bytes_to_send_size > 0) {
+       send_bytes_to_peer(bytes_to_send, bytes_to_send_size);
+     }
+
+     if (result != NULL) {
+       // Handshake completed.
+       h->result = result;
+       // Check the Peer.
+       tsi_peer peer;
+       status = tsi_handshaker_result_extract_peer(result, &peer);
+       if (status != TSI_OK) return;
+       status = check_peer(&peer);
+       tsi_peer_destruct(&peer);
+       if (status != TSI_OK) return;
+
+       // Create the protector.
+       tsi_frame_protector* protector = NULL;
+       status = tsi_handshaker_result_create_frame_protector(result, NULL,
+                                                             &protector);
+       if (status != TSI_OK) return;
+
+       // Do not forget to unprotect outstanding data if any.
+       ....
+     }
+   }
+   ------------------------------------------------------------------------   */
+typedef struct tsi_handshaker tsi_handshaker;
+
+/* TODO(jiangtaoli2016): Cleans up deprecated methods when we are ready. */
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_next instead.
+   Gets bytes that need to be sent to the peer.
+   - bytes is the buffer that will be written with the data to be sent to the
+     peer.
+   - bytes_size is an input/output parameter specifying the capacity of the
+     bytes parameter as input and the number of bytes written as output.
+   Returns TSI_OK if all the data to send to the peer has been written or if
+   nothing has to be sent to the peer (in which base bytes_size outputs to 0),
+   otherwise returns TSI_INCOMPLETE_DATA which indicates that this method
+   needs to be called again to get all the bytes to send to the peer (there
+   was more data to write than the specified bytes_size). In case of a fatal
+   error in the handshake, another specific error code is returned.  */
+tsi_result tsi_handshaker_get_bytes_to_send_to_peer(tsi_handshaker* self,
+                                                    unsigned char* bytes,
+                                                    size_t* bytes_size);
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_next instead.
+   Processes bytes received from the peer.
+   - bytes is the buffer containing the data.
+   - bytes_size is an input/output parameter specifying the size of the data as
+     input and the number of bytes consumed as output.
+   Return TSI_OK if the handshake has all the data it needs to process,
+   otherwise return TSI_INCOMPLETE_DATA which indicates that this method
+   needs to be called again to complete the data needed for processing. In
+   case of a fatal error in the handshake, another specific error code is
+   returned.  */
+tsi_result tsi_handshaker_process_bytes_from_peer(tsi_handshaker* self,
+                                                  const unsigned char* bytes,
+                                                  size_t* bytes_size);
+
+/* TO BE DEPRECATED SOON.
+   Gets the result of the handshaker.
+   Returns TSI_OK if the hanshake completed successfully and there has been no
+   errors. Returns TSI_HANDSHAKE_IN_PROGRESS if the handshaker is not done yet
+   but no error has been encountered so far. Otherwise the handshaker failed
+   with the returned error.  */
+tsi_result tsi_handshaker_get_result(tsi_handshaker* self);
+
+/* TO BE DEPRECATED SOON.
+   Returns 1 if the handshake is in progress, 0 otherwise.  */
+#define tsi_handshaker_is_in_progress(h) \
+  (tsi_handshaker_get_result((h)) == TSI_HANDSHAKE_IN_PROGRESS)
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_result_extract_peer instead.
+   This method may return TSI_FAILED_PRECONDITION if
+   tsi_handshaker_is_in_progress returns 1, it returns TSI_OK otherwise
+   assuming the handshaker is not in a fatal error state.
+   The caller is responsible for destructing the peer.  */
+tsi_result tsi_handshaker_extract_peer(tsi_handshaker* self, tsi_peer* peer);
+
+/* TO BE DEPRECATED SOON. Use tsi_handshaker_result_create_frame_protector
+   instead.
+   This method creates a tsi_frame_protector object after the handshake phase
+   is done. After this method has been called successfully, the only method
+   that can be called on this object is Destroy.
+   - max_output_protected_frame_size is an input/output parameter specifying the
+     desired max output protected frame size as input and outputing the actual
+     max output frame size as the output. Passing NULL is OK and will result in
+     the implementation choosing the default maximum protected frame size. Note
+     that this size only applies to outgoing frames (generated with
+     tsi_frame_protector_protect) and not incoming frames (input of
+     tsi_frame_protector_unprotect).
+   - protector is an output parameter pointing to the newly created
+     tsi_frame_protector object.
+   This method may return TSI_FAILED_PRECONDITION if
+   tsi_handshaker_is_in_progress returns 1, it returns TSI_OK otherwise assuming
+   the handshaker is not in a fatal error state.
+   The caller is responsible for destroying the protector.  */
+tsi_result tsi_handshaker_create_frame_protector(
+    tsi_handshaker* self, size_t* max_output_protected_frame_size,
+    tsi_frame_protector** protector);
+
+/* Callback function definition for tsi_handshaker_next.
+   - status indicates the status of the next operation.
+   - user_data is the argument to callback function passed from the caller.
+   - bytes_to_send is the data buffer to be sent to the peer.
+   - bytes_to_send_size is the size of data buffer to be sent to the peer.
+   - handshaker_result is the result of handshake when the handshake completes,
+     is NULL otherwise.  */
+typedef void (*tsi_handshaker_on_next_done_cb)(
+    tsi_result status, void* user_data, const unsigned char* bytes_to_send,
+    size_t bytes_to_send_size, tsi_handshaker_result* handshaker_result);
+
+/* Conduct a next step of the handshake.
+   - received_bytes is the buffer containing the data received from the peer.
+   - received_bytes_size is the size of the data received from the peer.
+   - bytes_to_send is the data buffer to be sent to the peer.
+   - bytes_to_send_size is the size of data buffer to be sent to the peer.
+   - handshaker_result is the result of handshake if the handshake completes.
+   - cb is the callback function defined above. It can be NULL for synchronous
+     TSI handshaker implementation.
+   - user_data is the argument to callback function passed from the caller.
+   This method returns TSI_ASYNC if the TSI handshaker implementation is
+   asynchronous, and in this case, the callback is guaranteed to run in another
+   thread owned by TSI. It returns TSI_OK if the handshake completes or if
+   there are data to send to the peer, otherwise returns TSI_INCOMPLETE_DATA
+   which indicates that this method needs to be called again with more data
+   from the peer. In case of a fatal error in the handshake, another specific
+   error code is returned.
+   The caller is responsible for destroying the handshaker_result. However,
+   the caller should not free bytes_to_send, as the buffer is owned by the
+   tsi_handshaker object.  */
+tsi_result tsi_handshaker_next(
+    tsi_handshaker* self, const unsigned char* received_bytes,
+    size_t received_bytes_size, const unsigned char** bytes_to_send,
+    size_t* bytes_to_send_size, tsi_handshaker_result** handshaker_result,
+    tsi_handshaker_on_next_done_cb cb, void* user_data);
+
+/* This method shuts down a TSI handshake that is in progress.
+ *
+ * This method will be invoked when TSI handshake should be terminated before
+ * being finished in order to free any resources being used.
+ */
+void tsi_handshaker_shutdown(tsi_handshaker* self);
+
+/* This method releases the tsi_handshaker object. After this method is called,
+   no other method can be called on the object.  */
+void tsi_handshaker_destroy(tsi_handshaker* self);
+
+/* This method initializes the necessary shared objects used for tsi
+   implementation.  */
+void tsi_init();
+
+/* This method destroys the shared objects created by tsi_init.  */
+void tsi_destroy();
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.c
new file mode 100644
index 0000000..5bb7ba7
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.c	
@@ -0,0 +1,621 @@
+
+#include <string.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/decode.h"
+#else
+  #include  "upb/decode.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+/* Maps descriptor type -> upb field type.  */
+const uint8_t upb_desctype_to_fieldtype[] = {
+  UPB_WIRE_TYPE_END_GROUP,  /* ENDGROUP */
+  UPB_TYPE_DOUBLE,          /* DOUBLE */
+  UPB_TYPE_FLOAT,           /* FLOAT */
+  UPB_TYPE_INT64,           /* INT64 */
+  UPB_TYPE_UINT64,          /* UINT64 */
+  UPB_TYPE_INT32,           /* INT32 */
+  UPB_TYPE_UINT64,          /* FIXED64 */
+  UPB_TYPE_UINT32,          /* FIXED32 */
+  UPB_TYPE_BOOL,            /* BOOL */
+  UPB_TYPE_STRING,          /* STRING */
+  UPB_TYPE_MESSAGE,         /* GROUP */
+  UPB_TYPE_MESSAGE,         /* MESSAGE */
+  UPB_TYPE_BYTES,           /* BYTES */
+  UPB_TYPE_UINT32,          /* UINT32 */
+  UPB_TYPE_ENUM,            /* ENUM */
+  UPB_TYPE_INT32,           /* SFIXED32 */
+  UPB_TYPE_INT64,           /* SFIXED64 */
+  UPB_TYPE_INT32,           /* SINT32 */
+  UPB_TYPE_INT64,           /* SINT64 */
+};
+
+/* Data pertaining to the parse. */
+typedef struct {
+  const char *ptr;           /* Current parsing position. */
+  const char *field_start;   /* Start of this field. */
+  const char *limit;         /* End of delimited region or end of buffer. */
+  upb_arena *arena;
+  int depth;
+  uint32_t end_group;  /* Set to field number of END_GROUP tag, if any. */
+} upb_decstate;
+
+/* Data passed by value to each parsing function. */
+typedef struct {
+  char *msg;
+  const upb_msglayout *layout;
+  upb_decstate *state;
+} upb_decframe;
+
+#define CHK(x) if (!(x)) { return 0; }
+
+static bool upb_skip_unknowngroup(upb_decstate *d, int field_number);
+static bool upb_decode_message(upb_decstate *d, char *msg,
+                               const upb_msglayout *l);
+
+static bool upb_decode_varint(const char **ptr, const char *limit,
+                              uint64_t *val) {
+  uint8_t byte;
+  int bitpos = 0;
+  const char *p = *ptr;
+  *val = 0;
+
+  do {
+    CHK(bitpos < 70 && p < limit);
+    byte = *p;
+    *val |= (uint64_t)(byte & 0x7F) << bitpos;
+    p++;
+    bitpos += 7;
+  } while (byte & 0x80);
+
+  *ptr = p;
+  return true;
+}
+
+static bool upb_decode_varint32(const char **ptr, const char *limit,
+                                uint32_t *val) {
+  uint64_t u64;
+  CHK(upb_decode_varint(ptr, limit, &u64) && u64 <= UINT32_MAX);
+  *val = (uint32_t)u64;
+  return true;
+}
+
+static bool upb_decode_64bit(const char **ptr, const char *limit,
+                             uint64_t *val) {
+  CHK(limit - *ptr >= 8);
+  memcpy(val, *ptr, 8);
+  *ptr += 8;
+  return true;
+}
+
+static bool upb_decode_32bit(const char **ptr, const char *limit,
+                             uint32_t *val) {
+  CHK(limit - *ptr >= 4);
+  memcpy(val, *ptr, 4);
+  *ptr += 4;
+  return true;
+}
+
+static int32_t upb_zzdecode_32(uint32_t n) {
+  return (n >> 1) ^ -(int32_t)(n & 1);
+}
+
+static int64_t upb_zzdecode_64(uint64_t n) {
+  return (n >> 1) ^ -(int64_t)(n & 1);
+}
+
+static bool upb_decode_string(const char **ptr, const char *limit,
+                              int *outlen) {
+  uint32_t len;
+
+  CHK(upb_decode_varint32(ptr, limit, &len) &&
+      len < INT32_MAX &&
+      limit - *ptr >= (int32_t)len);
+
+  *outlen = len;
+  return true;
+}
+
+static void upb_set32(void *msg, size_t ofs, uint32_t val) {
+  memcpy((char*)msg + ofs, &val, sizeof(val));
+}
+
+static bool upb_append_unknown(upb_decstate *d, upb_decframe *frame) {
+  upb_msg_addunknown(frame->msg, d->field_start, d->ptr - d->field_start,
+                     d->arena);
+  return true;
+}
+
+
+static bool upb_skip_unknownfielddata(upb_decstate *d, uint32_t tag,
+                                      uint32_t group_fieldnum) {
+  switch (tag & 7) {
+    case UPB_WIRE_TYPE_VARINT: {
+      uint64_t val;
+      return upb_decode_varint(&d->ptr, d->limit, &val);
+    }
+    case UPB_WIRE_TYPE_32BIT: {
+      uint32_t val;
+      return upb_decode_32bit(&d->ptr, d->limit, &val);
+    }
+    case UPB_WIRE_TYPE_64BIT: {
+      uint64_t val;
+      return upb_decode_64bit(&d->ptr, d->limit, &val);
+    }
+    case UPB_WIRE_TYPE_DELIMITED: {
+      int len;
+      CHK(upb_decode_string(&d->ptr, d->limit, &len));
+      d->ptr += len;
+      return true;
+    }
+    case UPB_WIRE_TYPE_START_GROUP:
+      return upb_skip_unknowngroup(d, tag >> 3);
+    case UPB_WIRE_TYPE_END_GROUP:
+      return (tag >> 3) == group_fieldnum;
+  }
+  return false;
+}
+
+static bool upb_skip_unknowngroup(upb_decstate *d, int field_number) {
+  while (d->ptr < d->limit && d->end_group == 0) {
+    uint32_t tag = 0;
+    CHK(upb_decode_varint32(&d->ptr, d->limit, &tag));
+    CHK(upb_skip_unknownfielddata(d, tag, field_number));
+  }
+
+  CHK(d->end_group == field_number);
+  d->end_group = 0;
+  return true;
+}
+
+static bool upb_array_grow(upb_array *arr, size_t elements, size_t elem_size,
+                           upb_arena *arena) {
+  size_t needed = arr->len + elements;
+  size_t new_size = UPB_MAX(arr->size, 8);
+  size_t new_bytes;
+  size_t old_bytes;
+  void *new_data;
+  upb_alloc *alloc = upb_arena_alloc(arena);
+
+  while (new_size < needed) {
+    new_size *= 2;
+  }
+
+  old_bytes = arr->len * elem_size;
+  new_bytes = new_size * elem_size;
+  new_data = upb_realloc(alloc, arr->data, old_bytes, new_bytes);
+  CHK(new_data);
+
+  arr->data = new_data;
+  arr->size = new_size;
+  return true;
+}
+
+static void *upb_array_reserve(upb_array *arr, size_t elements,
+                               size_t elem_size, upb_arena *arena) {
+  if (arr->size - arr->len < elements) {
+    CHK(upb_array_grow(arr, elements, elem_size, arena));
+  }
+  return (char*)arr->data + (arr->len * elem_size);
+}
+
+bool upb_array_add(upb_array *arr, size_t elements, size_t elem_size,
+                   const void *data, upb_arena *arena) {
+  void *dest = upb_array_reserve(arr, elements, elem_size, arena);
+
+  CHK(dest);
+  arr->len += elements;
+  memcpy(dest, data, elements * elem_size);
+
+  return true;
+}
+
+static upb_array *upb_getarr(upb_decframe *frame,
+                             const upb_msglayout_field *field) {
+  UPB_ASSERT(field->label == UPB_LABEL_REPEATED);
+  return *(upb_array**)&frame->msg[field->offset];
+}
+
+static upb_array *upb_getorcreatearr(upb_decframe *frame,
+                                     const upb_msglayout_field *field) {
+  upb_array *arr = upb_getarr(frame, field);
+
+  if (!arr) {
+    arr = upb_array_new(frame->state->arena);
+    CHK(arr);
+    *(upb_array**)&frame->msg[field->offset] = arr;
+  }
+
+  return arr;
+}
+
+static upb_msg *upb_getorcreatemsg(upb_decframe *frame,
+                                   const upb_msglayout_field *field,
+                                   const upb_msglayout **subm) {
+  upb_msg **submsg = (void*)(frame->msg + field->offset);
+  *subm = frame->layout->submsgs[field->submsg_index];
+
+  UPB_ASSERT(field->label != UPB_LABEL_REPEATED);
+
+  if (!*submsg) {
+    *submsg = upb_msg_new(*subm, frame->state->arena);
+    CHK(*submsg);
+  }
+
+  return *submsg;
+}
+
+static upb_msg *upb_addmsg(upb_decframe *frame,
+                           const upb_msglayout_field *field,
+                           const upb_msglayout **subm) {
+  upb_msg *submsg;
+  upb_array *arr = upb_getorcreatearr(frame, field);
+
+  UPB_ASSERT(field->label == UPB_LABEL_REPEATED);
+  UPB_ASSERT(field->descriptortype == UPB_DESCRIPTOR_TYPE_MESSAGE ||
+             field->descriptortype == UPB_DESCRIPTOR_TYPE_GROUP);
+
+  *subm = frame->layout->submsgs[field->submsg_index];
+  submsg = upb_msg_new(*subm, frame->state->arena);
+  CHK(submsg);
+  upb_array_add(arr, 1, sizeof(submsg), &submsg, frame->state->arena);
+
+  return submsg;
+}
+
+static void upb_sethasbit(upb_decframe *frame,
+                          const upb_msglayout_field *field) {
+  int32_t hasbit = field->presence;
+  UPB_ASSERT(field->presence > 0);
+  frame->msg[hasbit / 8] |= (1 << (hasbit % 8));
+}
+
+static void upb_setoneofcase(upb_decframe *frame,
+                             const upb_msglayout_field *field) {
+  UPB_ASSERT(field->presence < 0);
+  upb_set32(frame->msg, ~field->presence, field->number);
+}
+
+static bool upb_decode_addval(upb_decframe *frame,
+                               const upb_msglayout_field *field, void *val,
+                               size_t size) {
+  char *field_mem = frame->msg + field->offset;
+  upb_array *arr;
+
+  if (field->label == UPB_LABEL_REPEATED) {
+    arr = upb_getorcreatearr(frame, field);
+    CHK(arr);
+    field_mem = upb_array_reserve(arr, 1, size, frame->state->arena);
+    CHK(field_mem);
+  }
+
+  memcpy(field_mem, val, size);
+  return true;
+}
+
+static void upb_decode_setpresent(upb_decframe *frame,
+                                  const upb_msglayout_field *field) {
+  if (field->label == UPB_LABEL_REPEATED) {
+   upb_array *arr = upb_getarr(frame, field);
+   UPB_ASSERT(arr->len < arr->size);
+   arr->len++;
+  } else if (field->presence < 0) {
+    upb_setoneofcase(frame, field);
+  } else if (field->presence > 0) {
+    upb_sethasbit(frame, field);
+  }
+}
+
+static bool upb_decode_msgfield(upb_decstate *d, upb_msg *msg,
+                                const upb_msglayout *layout, int limit) {
+  const char* saved_limit = d->limit;
+  d->limit = d->ptr + limit;
+  CHK(--d->depth >= 0);
+  upb_decode_message(d, msg, layout);
+  d->depth++;
+  d->limit = saved_limit;
+  CHK(d->end_group == 0);
+  return true;
+}
+
+static bool upb_decode_groupfield(upb_decstate *d, upb_msg *msg,
+                                  const upb_msglayout *layout,
+                                  int field_number) {
+  CHK(--d->depth >= 0);
+  upb_decode_message(d, msg, layout);
+  d->depth++;
+  CHK(d->end_group == field_number);
+  d->end_group = 0;
+  return true;
+}
+
+static bool upb_decode_varintfield(upb_decstate *d, upb_decframe *frame,
+                                   const upb_msglayout_field *field) {
+  uint64_t val;
+  CHK(upb_decode_varint(&d->ptr, d->limit, &val));
+
+  switch (field->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_INT64:
+    case UPB_DESCRIPTOR_TYPE_UINT64:
+      CHK(upb_decode_addval(frame, field, &val, sizeof(val)));
+      break;
+    case UPB_DESCRIPTOR_TYPE_INT32:
+    case UPB_DESCRIPTOR_TYPE_UINT32:
+    case UPB_DESCRIPTOR_TYPE_ENUM: {
+      uint32_t val32 = (uint32_t)val;
+      CHK(upb_decode_addval(frame, field, &val32, sizeof(val32)));
+      break;
+    }
+    case UPB_DESCRIPTOR_TYPE_BOOL: {
+      bool valbool = val != 0;
+      CHK(upb_decode_addval(frame, field, &valbool, sizeof(valbool)));
+      break;
+    }
+    case UPB_DESCRIPTOR_TYPE_SINT32: {
+      int32_t decoded = upb_zzdecode_32((uint32_t)val);
+      CHK(upb_decode_addval(frame, field, &decoded, sizeof(decoded)));
+      break;
+    }
+    case UPB_DESCRIPTOR_TYPE_SINT64: {
+      int64_t decoded = upb_zzdecode_64(val);
+      CHK(upb_decode_addval(frame, field, &decoded, sizeof(decoded)));
+      break;
+    }
+    default:
+      return upb_append_unknown(d, frame);
+  }
+
+  upb_decode_setpresent(frame, field);
+  return true;
+}
+
+static bool upb_decode_64bitfield(upb_decstate *d, upb_decframe *frame,
+                                  const upb_msglayout_field *field) {
+  uint64_t val;
+  CHK(upb_decode_64bit(&d->ptr, d->limit, &val));
+
+  switch (field->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_DOUBLE:
+    case UPB_DESCRIPTOR_TYPE_FIXED64:
+    case UPB_DESCRIPTOR_TYPE_SFIXED64:
+      CHK(upb_decode_addval(frame, field, &val, sizeof(val)));
+      break;
+    default:
+      return upb_append_unknown(d, frame);
+  }
+
+  upb_decode_setpresent(frame, field);
+  return true;
+}
+
+static bool upb_decode_32bitfield(upb_decstate *d, upb_decframe *frame,
+                                  const upb_msglayout_field *field) {
+  uint32_t val;
+  CHK(upb_decode_32bit(&d->ptr, d->limit, &val));
+
+  switch (field->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_FLOAT:
+    case UPB_DESCRIPTOR_TYPE_FIXED32:
+    case UPB_DESCRIPTOR_TYPE_SFIXED32:
+      CHK(upb_decode_addval(frame, field, &val, sizeof(val)));
+      break;
+    default:
+      return upb_append_unknown(d, frame);
+  }
+
+  upb_decode_setpresent(frame, field);
+  return true;
+}
+
+static bool upb_decode_fixedpacked(upb_decstate *d, upb_array *arr,
+                                   uint32_t len, int elem_size) {
+  size_t elements = len / elem_size;
+
+  CHK((size_t)(elements * elem_size) == len);
+  CHK(upb_array_add(arr, elements, elem_size, d->ptr, d->arena));
+  d->ptr += len;
+
+  return true;
+}
+
+static upb_strview upb_decode_strfield(upb_decstate *d, uint32_t len) {
+  upb_strview ret;
+  ret.data = d->ptr;
+  ret.size = len;
+  d->ptr += len;
+  return ret;
+}
+
+static bool upb_decode_toarray(upb_decstate *d, upb_decframe *frame,
+                               const upb_msglayout_field *field, int len) {
+  upb_array *arr = upb_getorcreatearr(frame, field);
+  CHK(arr);
+
+#define VARINT_CASE(ctype, decode) \
+  VARINT_CASE_EX(ctype, decode, decode)
+
+#define VARINT_CASE_EX(ctype, decode, dtype)                           \
+  {                                                                    \
+    const char *ptr = d->ptr;                                          \
+    const char *limit = ptr + len;                                     \
+    while (ptr < limit) {                                              \
+      uint64_t val;                                                    \
+      ctype decoded;                                                   \
+      CHK(upb_decode_varint(&ptr, limit, &val));                       \
+      decoded = (decode)((dtype)val);                                  \
+      CHK(upb_array_add(arr, 1, sizeof(decoded), &decoded, d->arena)); \
+    }                                                                  \
+    d->ptr = ptr;                                                      \
+    return true;                                                       \
+  }
+
+  switch (field->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_STRING:
+    case UPB_DESCRIPTOR_TYPE_BYTES: {
+      upb_strview str = upb_decode_strfield(d, len);
+      return upb_array_add(arr, 1, sizeof(str), &str, d->arena);
+    }
+    case UPB_DESCRIPTOR_TYPE_FLOAT:
+    case UPB_DESCRIPTOR_TYPE_FIXED32:
+    case UPB_DESCRIPTOR_TYPE_SFIXED32:
+      return upb_decode_fixedpacked(d, arr, len, sizeof(int32_t));
+    case UPB_DESCRIPTOR_TYPE_DOUBLE:
+    case UPB_DESCRIPTOR_TYPE_FIXED64:
+    case UPB_DESCRIPTOR_TYPE_SFIXED64:
+      return upb_decode_fixedpacked(d, arr, len, sizeof(int64_t));
+    case UPB_DESCRIPTOR_TYPE_INT32:
+    case UPB_DESCRIPTOR_TYPE_UINT32:
+    case UPB_DESCRIPTOR_TYPE_ENUM:
+      VARINT_CASE(uint32_t, uint32_t);
+    case UPB_DESCRIPTOR_TYPE_INT64:
+    case UPB_DESCRIPTOR_TYPE_UINT64:
+      VARINT_CASE(uint64_t, uint64_t);
+    case UPB_DESCRIPTOR_TYPE_BOOL:
+      VARINT_CASE(bool, bool);
+    case UPB_DESCRIPTOR_TYPE_SINT32:
+      VARINT_CASE_EX(int32_t, upb_zzdecode_32, uint32_t);
+    case UPB_DESCRIPTOR_TYPE_SINT64:
+      VARINT_CASE_EX(int64_t, upb_zzdecode_64, uint64_t);
+    case UPB_DESCRIPTOR_TYPE_MESSAGE: {
+      const upb_msglayout *subm;
+      upb_msg *submsg = upb_addmsg(frame, field, &subm);
+      CHK(submsg);
+      return upb_decode_msgfield(d, submsg, subm, len);
+    }
+    case UPB_DESCRIPTOR_TYPE_GROUP:
+      return upb_append_unknown(d, frame);
+  }
+#undef VARINT_CASE
+  UPB_UNREACHABLE();
+}
+
+static bool upb_decode_delimitedfield(upb_decstate *d, upb_decframe *frame,
+                                      const upb_msglayout_field *field) {
+  int len;
+
+  CHK(upb_decode_string(&d->ptr, d->limit, &len));
+
+  if (field->label == UPB_LABEL_REPEATED) {
+    return upb_decode_toarray(d, frame, field, len);
+  } else {
+    switch (field->descriptortype) {
+      case UPB_DESCRIPTOR_TYPE_STRING:
+      case UPB_DESCRIPTOR_TYPE_BYTES: {
+        upb_strview str = upb_decode_strfield(d, len);
+        CHK(upb_decode_addval(frame, field, &str, sizeof(str)));
+        break;
+      }
+      case UPB_DESCRIPTOR_TYPE_MESSAGE: {
+        const upb_msglayout *subm;
+        upb_msg *submsg = upb_getorcreatemsg(frame, field, &subm);
+        CHK(submsg);
+        CHK(upb_decode_msgfield(d, submsg, subm, len));
+        break;
+      }
+      default:
+        /* TODO(haberman): should we accept the last element of a packed? */
+        d->ptr += len;
+        return upb_append_unknown(d, frame);
+    }
+    upb_decode_setpresent(frame, field);
+    return true;
+  }
+}
+
+static const upb_msglayout_field *upb_find_field(const upb_msglayout *l,
+                                                 uint32_t field_number) {
+  /* Lots of optimization opportunities here. */
+  int i;
+  for (i = 0; i < l->field_count; i++) {
+    if (l->fields[i].number == field_number) {
+      return &l->fields[i];
+    }
+  }
+
+  return NULL;  /* Unknown field. */
+}
+
+static bool upb_decode_field(upb_decstate *d, upb_decframe *frame) {
+  uint32_t tag;
+  const upb_msglayout_field *field;
+  int field_number;
+
+  d->field_start = d->ptr;
+  CHK(upb_decode_varint32(&d->ptr, d->limit, &tag));
+  field_number = tag >> 3;
+  field = upb_find_field(frame->layout, field_number);
+
+  if (field) {
+    switch (tag & 7) {
+      case UPB_WIRE_TYPE_VARINT:
+        return upb_decode_varintfield(d, frame, field);
+      case UPB_WIRE_TYPE_32BIT:
+        return upb_decode_32bitfield(d, frame, field);
+      case UPB_WIRE_TYPE_64BIT:
+        return upb_decode_64bitfield(d, frame, field);
+      case UPB_WIRE_TYPE_DELIMITED:
+        return upb_decode_delimitedfield(d, frame, field);
+      case UPB_WIRE_TYPE_START_GROUP: {
+        const upb_msglayout *layout;
+        upb_msg *group;
+
+        if (field->label == UPB_LABEL_REPEATED) {
+          group = upb_addmsg(frame, field, &layout);
+        } else {
+          group = upb_getorcreatemsg(frame, field, &layout);
+        }
+
+        return upb_decode_groupfield(d, group, layout, field_number);
+      }
+      case UPB_WIRE_TYPE_END_GROUP:
+        d->end_group = field_number;
+        return true;
+      default:
+        CHK(false);
+    }
+  } else {
+    CHK(field_number != 0);
+    CHK(upb_skip_unknownfielddata(d, tag, -1));
+    CHK(upb_append_unknown(d, frame));
+    return true;
+  }
+  UPB_UNREACHABLE();
+}
+
+static bool upb_decode_message(upb_decstate *d, char *msg, const upb_msglayout *l) {
+  upb_decframe frame;
+  frame.msg = msg;
+  frame.layout = l;
+  frame.state = d;
+
+  while (d->ptr < d->limit) {
+    CHK(upb_decode_field(d, &frame));
+  }
+
+  return true;
+}
+
+bool upb_decode(const char *buf, size_t size, void *msg, const upb_msglayout *l,
+                upb_arena *arena) {
+  upb_decstate state;
+  state.ptr = buf;
+  state.limit = buf + size;
+  state.arena = arena;
+  state.depth = 64;
+  state.end_group = 0;
+
+  CHK(upb_decode_message(&state, msg, l));
+  return state.end_group == 0;
+}
+
+#undef CHK
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.h
new file mode 100644
index 0000000..0a2f564
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/decode.h	
@@ -0,0 +1,25 @@
+/*
+** upb_decode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_DECODE_H_
+#define UPB_DECODE_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool upb_decode(const char *buf, size_t size, upb_msg *msg,
+                const upb_msglayout *l, upb_arena *arena);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_DECODE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.c
new file mode 100644
index 0000000..7732d37
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.c	
@@ -0,0 +1,394 @@
+/* We encode backwards, to avoid pre-computing lengths (one-pass encode). */
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/encode.h"
+#else
+  #include  "upb/encode.h"
+#endif
+
+#include <string.h>
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#define UPB_PB_VARINT_MAX_LEN 10
+#define CHK(x) do { if (!(x)) { return false; } } while(0)
+
+static size_t upb_encode_varint(uint64_t val, char *buf) {
+  size_t i;
+  if (val < 128) { buf[0] = val; return 1; }
+  i = 0;
+  while (val) {
+    uint8_t byte = val & 0x7fU;
+    val >>= 7;
+    if (val) byte |= 0x80U;
+    buf[i++] = byte;
+  }
+  return i;
+}
+
+static uint32_t upb_zzencode_32(int32_t n) { return ((uint32_t)n << 1) ^ (n >> 31); }
+static uint64_t upb_zzencode_64(int64_t n) { return ((uint64_t)n << 1) ^ (n >> 63); }
+
+typedef struct {
+  upb_alloc *alloc;
+  char *buf, *ptr, *limit;
+} upb_encstate;
+
+static size_t upb_roundup_pow2(size_t bytes) {
+  size_t ret = 128;
+  while (ret < bytes) {
+    ret *= 2;
+  }
+  return ret;
+}
+
+static bool upb_encode_growbuffer(upb_encstate *e, size_t bytes) {
+  size_t old_size = e->limit - e->buf;
+  size_t new_size = upb_roundup_pow2(bytes + (e->limit - e->ptr));
+  char *new_buf = upb_realloc(e->alloc, e->buf, old_size, new_size);
+  CHK(new_buf);
+
+  /* We want previous data at the end, realloc() put it at the beginning. */
+  if (old_size > 0) {
+    memmove(new_buf + new_size - old_size, e->buf, old_size);
+  }
+
+  e->ptr = new_buf + new_size - (e->limit - e->ptr);
+  e->limit = new_buf + new_size;
+  e->buf = new_buf;
+  return true;
+}
+
+/* Call to ensure that at least "bytes" bytes are available for writing at
+ * e->ptr.  Returns false if the bytes could not be allocated. */
+static bool upb_encode_reserve(upb_encstate *e, size_t bytes) {
+  CHK(UPB_LIKELY((size_t)(e->ptr - e->buf) >= bytes) ||
+      upb_encode_growbuffer(e, bytes));
+
+  e->ptr -= bytes;
+  return true;
+}
+
+/* Writes the given bytes to the buffer, handling reserve/advance. */
+static bool upb_put_bytes(upb_encstate *e, const void *data, size_t len) {
+  CHK(upb_encode_reserve(e, len));
+  memcpy(e->ptr, data, len);
+  return true;
+}
+
+static bool upb_put_fixed64(upb_encstate *e, uint64_t val) {
+  /* TODO(haberman): byte-swap for big endian. */
+  return upb_put_bytes(e, &val, sizeof(uint64_t));
+}
+
+static bool upb_put_fixed32(upb_encstate *e, uint32_t val) {
+  /* TODO(haberman): byte-swap for big endian. */
+  return upb_put_bytes(e, &val, sizeof(uint32_t));
+}
+
+static bool upb_put_varint(upb_encstate *e, uint64_t val) {
+  size_t len;
+  char *start;
+  CHK(upb_encode_reserve(e, UPB_PB_VARINT_MAX_LEN));
+  len = upb_encode_varint(val, e->ptr);
+  start = e->ptr + UPB_PB_VARINT_MAX_LEN - len;
+  memmove(start, e->ptr, len);
+  e->ptr = start;
+  return true;
+}
+
+static bool upb_put_double(upb_encstate *e, double d) {
+  uint64_t u64;
+  UPB_ASSERT(sizeof(double) == sizeof(uint64_t));
+  memcpy(&u64, &d, sizeof(uint64_t));
+  return upb_put_fixed64(e, u64);
+}
+
+static bool upb_put_float(upb_encstate *e, float d) {
+  uint32_t u32;
+  UPB_ASSERT(sizeof(float) == sizeof(uint32_t));
+  memcpy(&u32, &d, sizeof(uint32_t));
+  return upb_put_fixed32(e, u32);
+}
+
+static uint32_t upb_readcase(const char *msg, const upb_msglayout_field *f) {
+  uint32_t ret;
+  uint32_t offset = ~f->presence;
+  memcpy(&ret, msg + offset, sizeof(ret));
+  return ret;
+}
+
+static bool upb_readhasbit(const char *msg, const upb_msglayout_field *f) {
+  uint32_t hasbit = f->presence;
+  UPB_ASSERT(f->presence > 0);
+  return msg[hasbit / 8] & (1 << (hasbit % 8));
+}
+
+static bool upb_put_tag(upb_encstate *e, int field_number, int wire_type) {
+  return upb_put_varint(e, (field_number << 3) | wire_type);
+}
+
+static bool upb_put_fixedarray(upb_encstate *e, const upb_array *arr,
+                               size_t size) {
+  size_t bytes = arr->len * size;
+  return upb_put_bytes(e, arr->data, bytes) && upb_put_varint(e, bytes);
+}
+
+bool upb_encode_message(upb_encstate *e, const char *msg,
+                        const upb_msglayout *m, size_t *size);
+
+static bool upb_encode_array(upb_encstate *e, const char *field_mem,
+                             const upb_msglayout *m,
+                             const upb_msglayout_field *f) {
+  const upb_array *arr = *(const upb_array**)field_mem;
+
+  if (arr == NULL || arr->len == 0) {
+    return true;
+  }
+
+#define VARINT_CASE(ctype, encode) { \
+  ctype *start = arr->data; \
+  ctype *ptr = start + arr->len; \
+  size_t pre_len = e->limit - e->ptr; \
+  do { \
+    ptr--; \
+    CHK(upb_put_varint(e, encode)); \
+  } while (ptr != start); \
+  CHK(upb_put_varint(e, e->limit - e->ptr - pre_len)); \
+} \
+break; \
+do { ; } while(0)
+
+  switch (f->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_DOUBLE:
+      CHK(upb_put_fixedarray(e, arr, sizeof(double)));
+      break;
+    case UPB_DESCRIPTOR_TYPE_FLOAT:
+      CHK(upb_put_fixedarray(e, arr, sizeof(float)));
+      break;
+    case UPB_DESCRIPTOR_TYPE_SFIXED64:
+    case UPB_DESCRIPTOR_TYPE_FIXED64:
+      CHK(upb_put_fixedarray(e, arr, sizeof(uint64_t)));
+      break;
+    case UPB_DESCRIPTOR_TYPE_FIXED32:
+    case UPB_DESCRIPTOR_TYPE_SFIXED32:
+      CHK(upb_put_fixedarray(e, arr, sizeof(uint32_t)));
+      break;
+    case UPB_DESCRIPTOR_TYPE_INT64:
+    case UPB_DESCRIPTOR_TYPE_UINT64:
+      VARINT_CASE(uint64_t, *ptr);
+    case UPB_DESCRIPTOR_TYPE_UINT32:
+      VARINT_CASE(uint32_t, *ptr);
+    case UPB_DESCRIPTOR_TYPE_INT32:
+    case UPB_DESCRIPTOR_TYPE_ENUM:
+      VARINT_CASE(int32_t, (int64_t)*ptr);
+    case UPB_DESCRIPTOR_TYPE_BOOL:
+      VARINT_CASE(bool, *ptr);
+    case UPB_DESCRIPTOR_TYPE_SINT32:
+      VARINT_CASE(int32_t, upb_zzencode_32(*ptr));
+    case UPB_DESCRIPTOR_TYPE_SINT64:
+      VARINT_CASE(int64_t, upb_zzencode_64(*ptr));
+    case UPB_DESCRIPTOR_TYPE_STRING:
+    case UPB_DESCRIPTOR_TYPE_BYTES: {
+      upb_strview *start = arr->data;
+      upb_strview *ptr = start + arr->len;
+      do {
+        ptr--;
+        CHK(upb_put_bytes(e, ptr->data, ptr->size) &&
+            upb_put_varint(e, ptr->size) &&
+            upb_put_tag(e, f->number, UPB_WIRE_TYPE_DELIMITED));
+      } while (ptr != start);
+      return true;
+    }
+    case UPB_DESCRIPTOR_TYPE_GROUP: {
+      void **start = arr->data;
+      void **ptr = start + arr->len;
+      const upb_msglayout *subm = m->submsgs[f->submsg_index];
+      do {
+        size_t size;
+        ptr--;
+        CHK(upb_put_tag(e, f->number, UPB_WIRE_TYPE_END_GROUP) &&
+            upb_encode_message(e, *ptr, subm, &size) &&
+            upb_put_tag(e, f->number, UPB_WIRE_TYPE_START_GROUP));
+      } while (ptr != start);
+      return true;
+    }
+    case UPB_DESCRIPTOR_TYPE_MESSAGE: {
+      void **start = arr->data;
+      void **ptr = start + arr->len;
+      const upb_msglayout *subm = m->submsgs[f->submsg_index];
+      do {
+        size_t size;
+        ptr--;
+        CHK(upb_encode_message(e, *ptr, subm, &size) &&
+            upb_put_varint(e, size) &&
+            upb_put_tag(e, f->number, UPB_WIRE_TYPE_DELIMITED));
+      } while (ptr != start);
+      return true;
+    }
+  }
+#undef VARINT_CASE
+
+  /* We encode all primitive arrays as packed, regardless of what was specified
+   * in the .proto file.  Could special case 1-sized arrays. */
+  CHK(upb_put_tag(e, f->number, UPB_WIRE_TYPE_DELIMITED));
+  return true;
+}
+
+static bool upb_encode_scalarfield(upb_encstate *e, const char *field_mem,
+                                   const upb_msglayout *m,
+                                   const upb_msglayout_field *f,
+                                   bool skip_zero_value) {
+#define CASE(ctype, type, wire_type, encodeval) do { \
+  ctype val = *(ctype*)field_mem; \
+  if (skip_zero_value && val == 0) { \
+    return true; \
+  } \
+  return upb_put_ ## type(e, encodeval) && \
+      upb_put_tag(e, f->number, wire_type); \
+} while(0)
+
+  switch (f->descriptortype) {
+    case UPB_DESCRIPTOR_TYPE_DOUBLE:
+      CASE(double, double, UPB_WIRE_TYPE_64BIT, val);
+    case UPB_DESCRIPTOR_TYPE_FLOAT:
+      CASE(float, float, UPB_WIRE_TYPE_32BIT, val);
+    case UPB_DESCRIPTOR_TYPE_INT64:
+    case UPB_DESCRIPTOR_TYPE_UINT64:
+      CASE(uint64_t, varint, UPB_WIRE_TYPE_VARINT, val);
+    case UPB_DESCRIPTOR_TYPE_UINT32:
+      CASE(uint32_t, varint, UPB_WIRE_TYPE_VARINT, val);
+    case UPB_DESCRIPTOR_TYPE_INT32:
+    case UPB_DESCRIPTOR_TYPE_ENUM:
+      CASE(int32_t, varint, UPB_WIRE_TYPE_VARINT, (int64_t)val);
+    case UPB_DESCRIPTOR_TYPE_SFIXED64:
+    case UPB_DESCRIPTOR_TYPE_FIXED64:
+      CASE(uint64_t, fixed64, UPB_WIRE_TYPE_64BIT, val);
+    case UPB_DESCRIPTOR_TYPE_FIXED32:
+    case UPB_DESCRIPTOR_TYPE_SFIXED32:
+      CASE(uint32_t, fixed32, UPB_WIRE_TYPE_32BIT, val);
+    case UPB_DESCRIPTOR_TYPE_BOOL:
+      CASE(bool, varint, UPB_WIRE_TYPE_VARINT, val);
+    case UPB_DESCRIPTOR_TYPE_SINT32:
+      CASE(int32_t, varint, UPB_WIRE_TYPE_VARINT, upb_zzencode_32(val));
+    case UPB_DESCRIPTOR_TYPE_SINT64:
+      CASE(int64_t, varint, UPB_WIRE_TYPE_VARINT, upb_zzencode_64(val));
+    case UPB_DESCRIPTOR_TYPE_STRING:
+    case UPB_DESCRIPTOR_TYPE_BYTES: {
+      upb_strview view = *(upb_strview*)field_mem;
+      if (skip_zero_value && view.size == 0) {
+        return true;
+      }
+      return upb_put_bytes(e, view.data, view.size) &&
+          upb_put_varint(e, view.size) &&
+          upb_put_tag(e, f->number, UPB_WIRE_TYPE_DELIMITED);
+    }
+    case UPB_DESCRIPTOR_TYPE_GROUP: {
+      size_t size;
+      void *submsg = *(void **)field_mem;
+      const upb_msglayout *subm = m->submsgs[f->submsg_index];
+      if (submsg == NULL) {
+        return true;
+      }
+      return upb_put_tag(e, f->number, UPB_WIRE_TYPE_END_GROUP) &&
+          upb_encode_message(e, submsg, subm, &size) &&
+          upb_put_tag(e, f->number, UPB_WIRE_TYPE_START_GROUP);
+    }
+    case UPB_DESCRIPTOR_TYPE_MESSAGE: {
+      size_t size;
+      void *submsg = *(void **)field_mem;
+      const upb_msglayout *subm = m->submsgs[f->submsg_index];
+      if (submsg == NULL) {
+        return true;
+      }
+      return upb_encode_message(e, submsg, subm, &size) &&
+          upb_put_varint(e, size) &&
+          upb_put_tag(e, f->number, UPB_WIRE_TYPE_DELIMITED);
+    }
+  }
+#undef CASE
+  UPB_UNREACHABLE();
+}
+
+bool upb_encode_message(upb_encstate *e, const char *msg,
+                        const upb_msglayout *m, size_t *size) {
+  int i;
+  size_t pre_len = e->limit - e->ptr;
+  const char *unknown;
+  size_t unknown_size;
+
+  for (i = m->field_count - 1; i >= 0; i--) {
+    const upb_msglayout_field *f = &m->fields[i];
+
+    if (f->label == UPB_LABEL_REPEATED) {
+      CHK(upb_encode_array(e, msg + f->offset, m, f));
+    } else {
+      bool skip_empty = false;
+      if (f->presence == 0) {
+        /* Proto3 presence. */
+        skip_empty = true;
+      } else if (f->presence > 0) {
+        /* Proto2 presence: hasbit. */
+        if (!upb_readhasbit(msg, f)) {
+          continue;
+        }
+      } else {
+        /* Field is in a oneof. */
+        if (upb_readcase(msg, f) != f->number) {
+          continue;
+        }
+      }
+      CHK(upb_encode_scalarfield(e, msg + f->offset, m, f, skip_empty));
+    }
+  }
+
+  unknown = upb_msg_getunknown(msg, &unknown_size);
+
+  if (unknown) {
+    upb_put_bytes(e, unknown, unknown_size);
+  }
+
+  *size = (e->limit - e->ptr) - pre_len;
+  return true;
+}
+
+char *upb_encode(const void *msg, const upb_msglayout *m, upb_arena *arena,
+                 size_t *size) {
+  upb_encstate e;
+  e.alloc = upb_arena_alloc(arena);
+  e.buf = NULL;
+  e.limit = NULL;
+  e.ptr = NULL;
+
+  if (!upb_encode_message(&e, msg, m, size)) {
+    *size = 0;
+    return NULL;
+  }
+
+  *size = e.limit - e.ptr;
+
+  if (*size == 0) {
+    static char ch;
+    return &ch;
+  } else {
+    UPB_ASSERT(e.ptr);
+    return e.ptr;
+  }
+}
+
+#undef CHK
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.h
new file mode 100644
index 0000000..b826983
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/encode.h	
@@ -0,0 +1,25 @@
+/*
+** upb_encode: parsing into a upb_msg using a upb_msglayout.
+*/
+
+#ifndef UPB_ENCODE_H_
+#define UPB_ENCODE_H_
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+char *upb_encode(const void *msg, const upb_msglayout *l, upb_arena *arena,
+                 size_t *size);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* UPB_ENCODE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/generated_util.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/generated_util.h
new file mode 100644
index 0000000..ccdb80b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/generated_util.h	
@@ -0,0 +1,117 @@
+/*
+** Functions for use by generated code.  These are not public and users must
+** not call them directly.
+*/
+
+#ifndef UPB_GENERATED_UTIL_H_
+#define UPB_GENERATED_UTIL_H_
+
+#include <stdint.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#define PTR_AT(msg, ofs, type) (type*)((const char*)msg + ofs)
+
+UPB_INLINE const void *_upb_array_accessor(const void *msg, size_t ofs,
+                                           size_t *size) {
+  const upb_array *arr = *PTR_AT(msg, ofs, const upb_array*);
+  if (arr) {
+    if (size) *size = arr->len;
+    return arr->data;
+  } else {
+    if (size) *size = 0;
+    return NULL;
+  }
+}
+
+UPB_INLINE void *_upb_array_mutable_accessor(void *msg, size_t ofs,
+                                             size_t *size) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+  if (arr) {
+    if (size) *size = arr->len;
+    return arr->data;
+  } else {
+    if (size) *size = 0;
+    return NULL;
+  }
+}
+
+/* TODO(haberman): this is a mess.  It will improve when upb_array no longer
+ * carries reflective state (type, elem_size). */
+UPB_INLINE void *_upb_array_resize_accessor(void *msg, size_t ofs, size_t size,
+                                            size_t elem_size,
+                                            upb_fieldtype_t type,
+                                            upb_arena *arena) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+
+  if (!arr) {
+    arr = upb_array_new(arena);
+    if (!arr) return NULL;
+    *PTR_AT(msg, ofs, upb_array*) = arr;
+  }
+
+  if (size > arr->size) {
+    size_t new_size = UPB_MAX(arr->size, 4);
+    size_t old_bytes = arr->size * elem_size;
+    size_t new_bytes;
+    while (new_size < size) new_size *= 2;
+    new_bytes = new_size * elem_size;
+    arr->data = upb_arena_realloc(arena, arr->data, old_bytes, new_bytes);
+    if (!arr->data) {
+      return NULL;
+    }
+    arr->size = new_size;
+  }
+
+  arr->len = size;
+  return arr->data;
+}
+
+UPB_INLINE bool _upb_array_append_accessor(void *msg, size_t ofs,
+                                           size_t elem_size,
+                                           upb_fieldtype_t type,
+                                           const void *value,
+                                           upb_arena *arena) {
+  upb_array *arr = *PTR_AT(msg, ofs, upb_array*);
+  size_t i = arr ? arr->len : 0;
+  void *data =
+      _upb_array_resize_accessor(msg, ofs, i + 1, elem_size, type, arena);
+  if (!data) return false;
+  memcpy(PTR_AT(data, i * elem_size, char), value, elem_size);
+  return true;
+}
+
+UPB_INLINE bool _upb_has_field(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, const char) & (1 << (idx % 8))) != 0;
+}
+
+UPB_INLINE bool _upb_sethas(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, char)) |= (char)(1 << (idx % 8));
+}
+
+UPB_INLINE bool _upb_clearhas(const void *msg, size_t idx) {
+  return (*PTR_AT(msg, idx / 8, char)) &= (char)(~(1 << (idx % 8)));
+}
+
+UPB_INLINE bool _upb_has_oneof_field(const void *msg, size_t case_ofs, int32_t num) {
+  return *PTR_AT(msg, case_ofs, int32_t) == num;
+}
+
+#undef PTR_AT
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_GENERATED_UTIL_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.c
new file mode 100644
index 0000000..8caf0ea
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.c	
@@ -0,0 +1,123 @@
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/msg.h"
+#else
+  #include  "upb/msg.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/table.int.h"
+#else
+  #include  "upb/table.int.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#define VOIDPTR_AT(msg, ofs) (void*)((char*)msg + (int)ofs)
+
+/* Internal members of a upb_msg.  We can change this without breaking binary
+ * compatibility.  We put these before the user's data.  The user's upb_msg*
+ * points after the upb_msg_internal. */
+
+/* Used when a message is not extendable. */
+typedef struct {
+  char *unknown;
+  size_t unknown_len;
+  size_t unknown_size;
+} upb_msg_internal;
+
+/* Used when a message is extendable. */
+typedef struct {
+  upb_inttable *extdict;
+  upb_msg_internal base;
+} upb_msg_internal_withext;
+
+static int upb_msg_internalsize(const upb_msglayout *l) {
+  return sizeof(upb_msg_internal) - l->extendable * sizeof(void *);
+}
+
+static size_t upb_msg_sizeof(const upb_msglayout *l) {
+  return l->size + upb_msg_internalsize(l);
+}
+
+static upb_msg_internal *upb_msg_getinternal(upb_msg *msg) {
+  return VOIDPTR_AT(msg, -sizeof(upb_msg_internal));
+}
+
+static const upb_msg_internal *upb_msg_getinternal_const(const upb_msg *msg) {
+  return VOIDPTR_AT(msg, -sizeof(upb_msg_internal));
+}
+
+static upb_msg_internal_withext *upb_msg_getinternalwithext(
+    upb_msg *msg, const upb_msglayout *l) {
+  UPB_ASSERT(l->extendable);
+  return VOIDPTR_AT(msg, -sizeof(upb_msg_internal_withext));
+}
+
+upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a) {
+  upb_alloc *alloc = upb_arena_alloc(a);
+  void *mem = upb_malloc(alloc, upb_msg_sizeof(l));
+  upb_msg_internal *in;
+  upb_msg *msg;
+
+  if (!mem) {
+    return NULL;
+  }
+
+  msg = VOIDPTR_AT(mem, upb_msg_internalsize(l));
+
+  /* Initialize normal members. */
+  memset(msg, 0, l->size);
+
+  /* Initialize internal members. */
+  in = upb_msg_getinternal(msg);
+  in->unknown = NULL;
+  in->unknown_len = 0;
+  in->unknown_size = 0;
+
+  if (l->extendable) {
+    upb_msg_getinternalwithext(msg, l)->extdict = NULL;
+  }
+
+  return msg;
+}
+
+upb_array *upb_array_new(upb_arena *a) {
+  upb_array *ret = upb_arena_malloc(a, sizeof(upb_array));
+
+  if (!ret) {
+    return NULL;
+  }
+
+  ret->data = NULL;
+  ret->len = 0;
+  ret->size = 0;
+
+  return ret;
+}
+
+void upb_msg_addunknown(upb_msg *msg, const char *data, size_t len,
+                        upb_arena *arena) {
+  upb_msg_internal *in = upb_msg_getinternal(msg);
+  if (len > in->unknown_size - in->unknown_len) {
+    upb_alloc *alloc = upb_arena_alloc(arena);
+    size_t need = in->unknown_size + len;
+    size_t newsize = UPB_MAX(in->unknown_size * 2, need);
+    in->unknown = upb_realloc(alloc, in->unknown, in->unknown_size, newsize);
+    in->unknown_size = newsize;
+  }
+  memcpy(in->unknown + in->unknown_len, data, len);
+  in->unknown_len += len;
+}
+
+const char *upb_msg_getunknown(const upb_msg *msg, size_t *len) {
+  const upb_msg_internal* in = upb_msg_getinternal_const(msg);
+  *len = in->unknown_len;
+  return in->unknown;
+}
+
+#undef VOIDPTR_AT
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.h
new file mode 100644
index 0000000..d98486a
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/msg.h	
@@ -0,0 +1,73 @@
+/*
+** Data structures for message tables, used for parsing and serialization.
+** This are much lighter-weight than full reflection, but they are do not
+** have enough information to convert to text format, JSON, etc.
+**
+** The definitions in this file are internal to upb.
+**/
+
+#ifndef UPB_MSG_H_
+#define UPB_MSG_H_
+
+#include <stdint.h>
+#include <string.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void upb_msg;
+
+/** upb_msglayout *************************************************************/
+
+/* upb_msglayout represents the memory layout of a given upb_msgdef.  The
+ * members are public so generated code can initialize them, but users MUST NOT
+ * read or write any of its members. */
+
+typedef struct {
+  uint32_t number;
+  uint16_t offset;
+  int16_t presence;      /* If >0, hasbit_index+1.  If <0, oneof_index+1. */
+  uint16_t submsg_index;  /* undefined if descriptortype != MESSAGE or GROUP. */
+  uint8_t descriptortype;
+  uint8_t label;
+} upb_msglayout_field;
+
+typedef struct upb_msglayout {
+  const struct upb_msglayout *const* submsgs;
+  const upb_msglayout_field *fields;
+  /* Must be aligned to sizeof(void*).  Doesn't include internal members like
+   * unknown fields, extension dict, pointer to msglayout, etc. */
+  uint16_t size;
+  uint16_t field_count;
+  bool extendable;
+} upb_msglayout;
+
+/** Message internal representation *******************************************/
+
+/* Our internal representation for repeated fields. */
+typedef struct {
+  void *data;   /* Each element is element_size. */
+  size_t len;   /* Measured in elements. */
+  size_t size;  /* Measured in elements. */
+} upb_array;
+
+upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a);
+upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a);
+
+void upb_msg_addunknown(upb_msg *msg, const char *data, size_t len,
+                        upb_arena *arena);
+const char *upb_msg_getunknown(const upb_msg *msg, size_t *len);
+
+upb_array *upb_array_new(upb_arena *a);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif /* UPB_MSG_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port.c
new file mode 100644
index 0000000..0222f09
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port.c	
@@ -0,0 +1,30 @@
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef UPB_MSVC_VSNPRINTF
+/* Visual C++ earlier than 2015 doesn't have standard C99 snprintf and
+ * vsnprintf. To support them, missing functions are manually implemented
+ * using the existing secure functions. */
+int msvc_vsnprintf(char* s, size_t n, const char* format, va_list arg) {
+  if (!s) {
+    return _vscprintf(format, arg);
+  }
+  int ret = _vsnprintf_s(s, n, _TRUNCATE, format, arg);
+  if (ret < 0) {
+	ret = _vscprintf(format, arg);
+  }
+  return ret;
+}
+
+int msvc_snprintf(char* s, size_t n, const char* format, ...) {
+  va_list arg;
+  va_start(arg, format);
+  int ret = msvc_vsnprintf(s, n, format, arg);
+  va_end(arg);
+  return ret;
+}
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_def.inc b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_def.inc
new file mode 100644
index 0000000..b416eae
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_def.inc	
@@ -0,0 +1,150 @@
+/*
+* This is where we define macros used across upb.
+*
+* All of these macros are undef'd in port_undef.inc to avoid leaking them to
+* users.
+*
+* The correct usage is:
+*
+*   #include "upb/foobar.h"
+*   #include "upb/baz.h"
+*
+*   // MUST be last included header.
+*   #include "upb/port_def.inc"
+*
+*   // Code for this file.
+*   // <...>
+*
+*   // Can be omitted for .c files, required for .h.
+*   #include "upb/port_undef.inc"
+*
+* This file is private and must not be included by users!
+*/
+#include <stdint.h>
+
+#if UINTPTR_MAX == 0xffffffff
+#define UPB_SIZE(size32, size64) size32
+#else
+#define UPB_SIZE(size32, size64) size64
+#endif
+
+#define UPB_FIELD_AT(msg, fieldtype, offset) \
+  *(fieldtype*)((const char*)(msg) + offset)
+
+#define UPB_READ_ONEOF(msg, fieldtype, offset, case_offset, case_val, default) \
+  UPB_FIELD_AT(msg, int, case_offset) == case_val                              \
+      ? UPB_FIELD_AT(msg, fieldtype, offset)                                   \
+      : default
+
+#define UPB_WRITE_ONEOF(msg, fieldtype, offset, value, case_offset, case_val) \
+  UPB_FIELD_AT(msg, int, case_offset) = case_val;                             \
+  UPB_FIELD_AT(msg, fieldtype, offset) = value;
+
+/* UPB_INLINE: inline if possible, emit standalone code if required. */
+#ifdef __cplusplus
+#define UPB_INLINE inline
+#elif defined (__GNUC__) || defined(__clang__)
+#define UPB_INLINE static __inline__
+#else
+#define UPB_INLINE static
+#endif
+
+/* Hints to the compiler about likely/unlikely branches. */
+#if defined (__GNUC__) || defined(__clang__)
+#define UPB_LIKELY(x) __builtin_expect((x),1)
+#define UPB_UNLIKELY(x) __builtin_expect((x),0)
+#else
+#define UPB_LIKELY(x) (x)
+#define UPB_UNLIKELY(x) (x)
+#endif
+
+/* Define UPB_BIG_ENDIAN manually if you're on big endian and your compiler
+ * doesn't provide these preprocessor symbols. */
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#define UPB_BIG_ENDIAN
+#endif
+
+/* Macros for function attributes on compilers that support them. */
+#ifdef __GNUC__
+#define UPB_FORCEINLINE __inline__ __attribute__((always_inline))
+#define UPB_NOINLINE __attribute__((noinline))
+#define UPB_NORETURN __attribute__((__noreturn__))
+#else  /* !defined(__GNUC__) */
+#define UPB_FORCEINLINE
+#define UPB_NOINLINE
+#define UPB_NORETURN
+#endif
+
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
+/* C99/C++11 versions. */
+#include <stdio.h>
+#define _upb_snprintf snprintf
+#define _upb_vsnprintf vsnprintf
+#define _upb_va_copy(a, b) va_copy(a, b)
+#elif defined(_MSC_VER)
+/* Microsoft C/C++ versions. */
+#include <stdarg.h>
+#include <stdio.h>
+#if _MSC_VER < 1900
+int msvc_snprintf(char* s, size_t n, const char* format, ...);
+int msvc_vsnprintf(char* s, size_t n, const char* format, va_list arg);
+#define UPB_MSVC_VSNPRINTF
+#define _upb_snprintf msvc_snprintf
+#define _upb_vsnprintf msvc_vsnprintf
+#else
+#define _upb_snprintf snprintf
+#define _upb_vsnprintf vsnprintf
+#endif
+#define _upb_va_copy(a, b) va_copy(a, b)
+#elif defined __GNUC__
+/* A few hacky workarounds for functions not in C89.
+ * For internal use only!
+ * TODO(haberman): fix these by including our own implementations, or finding
+ * another workaround.
+ */
+#define _upb_snprintf __builtin_snprintf
+#define _upb_vsnprintf __builtin_vsnprintf
+#define _upb_va_copy(a, b) __va_copy(a, b)
+#else
+#error Need implementations of [v]snprintf and va_copy
+#endif
+
+#ifdef __cplusplus
+#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || \
+    (defined(_MSC_VER) && _MSC_VER >= 1900)
+/* C++11 is present */
+#else
+#error upb requires C++11 for C++ support
+#endif
+#endif
+
+#define UPB_MAX(x, y) ((x) > (y) ? (x) : (y))
+#define UPB_MIN(x, y) ((x) < (y) ? (x) : (y))
+
+#define UPB_UNUSED(var) (void)var
+
+/* UPB_ASSERT(): in release mode, we use the expression without letting it be
+ * evaluated.  This prevents "unused variable" warnings. */
+#ifdef NDEBUG
+#define UPB_ASSERT(expr) do {} while (false && (expr))
+#else
+#define UPB_ASSERT(expr) assert(expr)
+#endif
+
+/* UPB_ASSERT_DEBUGVAR(): assert that uses functions or variables that only
+ * exist in debug mode.  This turns into regular assert. */
+#define UPB_ASSERT_DEBUGVAR(expr) assert(expr)
+
+#if defined(__GNUC__) || defined(__clang__)
+#define UPB_UNREACHABLE() do { assert(0); __builtin_unreachable(); } while(0)
+#else
+#define UPB_UNREACHABLE() do { assert(0); } while(0)
+#endif
+
+/* UPB_INFINITY representing floating-point positive infinity. */
+#include <math.h>
+#ifdef INFINITY
+#define UPB_INFINITY INFINITY
+#else
+#define UPB_INFINITY (1.0 / 0.0)
+#endif
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_undef.inc b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_undef.inc
new file mode 100644
index 0000000..103180b
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/port_undef.inc	
@@ -0,0 +1,21 @@
+/* See port_def.inc.  This should #undef all macros #defined there. */
+
+#undef UPB_SIZE
+#undef UPB_FIELD_AT
+#undef UPB_READ_ONEOF
+#undef UPB_WRITE_ONEOF
+#undef UPB_INLINE
+#undef UPB_FORCEINLINE
+#undef UPB_NOINLINE
+#undef UPB_NORETURN
+#undef UPB_MAX
+#undef UPB_MIN
+#undef UPB_UNUSED
+#undef UPB_ASSERT
+#undef UPB_ASSERT_DEBUGVAR
+#undef UPB_UNREACHABLE
+#undef UPB_INFINITY
+#undef UPB_MSVC_VSNPRINTF
+#undef _upb_snprintf
+#undef _upb_vsnprintf
+#undef _upb_va_copy
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.c
new file mode 100644
index 0000000..8658e01
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.c	
@@ -0,0 +1,921 @@
+/*
+** upb_table Implementation
+**
+** Implementation is heavily inspired by Lua's ltable.c.
+*/
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/table.int.h"
+#else
+  #include  "upb/table.int.h"
+#endif
+
+#include <string.h>
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#define UPB_MAXARRSIZE 16  /* 64k. */
+
+/* From Chromium. */
+#define ARRAY_SIZE(x) \
+    ((sizeof(x)/sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x])))))
+
+static void upb_check_alloc(upb_table *t, upb_alloc *a) {
+  UPB_UNUSED(t);
+  UPB_UNUSED(a);
+  UPB_ASSERT_DEBUGVAR(t->alloc == a);
+}
+
+static const double MAX_LOAD = 0.85;
+
+/* The minimum utilization of the array part of a mixed hash/array table.  This
+ * is a speed/memory-usage tradeoff (though it's not straightforward because of
+ * cache effects).  The lower this is, the more memory we'll use. */
+static const double MIN_DENSITY = 0.1;
+
+bool is_pow2(uint64_t v) { return v == 0 || (v & (v - 1)) == 0; }
+
+int log2ceil(uint64_t v) {
+  int ret = 0;
+  bool pow2 = is_pow2(v);
+  while (v >>= 1) ret++;
+  ret = pow2 ? ret : ret + 1;  /* Ceiling. */
+  return UPB_MIN(UPB_MAXARRSIZE, ret);
+}
+
+char *upb_strdup(const char *s, upb_alloc *a) {
+  return upb_strdup2(s, strlen(s), a);
+}
+
+char *upb_strdup2(const char *s, size_t len, upb_alloc *a) {
+  size_t n;
+  char *p;
+
+  /* Prevent overflow errors. */
+  if (len == SIZE_MAX) return NULL;
+  /* Always null-terminate, even if binary data; but don't rely on the input to
+   * have a null-terminating byte since it may be a raw binary buffer. */
+  n = len + 1;
+  p = upb_malloc(a, n);
+  if (p) {
+    memcpy(p, s, len);
+    p[len] = 0;
+  }
+  return p;
+}
+
+/* A type to represent the lookup key of either a strtable or an inttable. */
+typedef union {
+  uintptr_t num;
+  struct {
+    const char *str;
+    size_t len;
+  } str;
+} lookupkey_t;
+
+static lookupkey_t strkey2(const char *str, size_t len) {
+  lookupkey_t k;
+  k.str.str = str;
+  k.str.len = len;
+  return k;
+}
+
+static lookupkey_t intkey(uintptr_t key) {
+  lookupkey_t k;
+  k.num = key;
+  return k;
+}
+
+typedef uint32_t hashfunc_t(upb_tabkey key);
+typedef bool eqlfunc_t(upb_tabkey k1, lookupkey_t k2);
+
+/* Base table (shared code) ***************************************************/
+
+/* For when we need to cast away const. */
+static upb_tabent *mutable_entries(upb_table *t) {
+  return (upb_tabent*)t->entries;
+}
+
+static bool isfull(upb_table *t) {
+  if (upb_table_size(t) == 0) {
+    return true;
+  } else {
+    return ((double)(t->count + 1) / upb_table_size(t)) > MAX_LOAD;
+  }
+}
+
+static bool init(upb_table *t, upb_ctype_t ctype, uint8_t size_lg2,
+                 upb_alloc *a) {
+  size_t bytes;
+
+  t->count = 0;
+  t->ctype = ctype;
+  t->size_lg2 = size_lg2;
+  t->mask = upb_table_size(t) ? upb_table_size(t) - 1 : 0;
+#ifndef NDEBUG
+  t->alloc = a;
+#endif
+  bytes = upb_table_size(t) * sizeof(upb_tabent);
+  if (bytes > 0) {
+    t->entries = upb_malloc(a, bytes);
+    if (!t->entries) return false;
+    memset(mutable_entries(t), 0, bytes);
+  } else {
+    t->entries = NULL;
+  }
+  return true;
+}
+
+static void uninit(upb_table *t, upb_alloc *a) {
+  upb_check_alloc(t, a);
+  upb_free(a, mutable_entries(t));
+}
+
+static upb_tabent *emptyent(upb_table *t) {
+  upb_tabent *e = mutable_entries(t) + upb_table_size(t);
+  while (1) { if (upb_tabent_isempty(--e)) return e; UPB_ASSERT(e > t->entries); }
+}
+
+static upb_tabent *getentry_mutable(upb_table *t, uint32_t hash) {
+  return (upb_tabent*)upb_getentry(t, hash);
+}
+
+static const upb_tabent *findentry(const upb_table *t, lookupkey_t key,
+                                   uint32_t hash, eqlfunc_t *eql) {
+  const upb_tabent *e;
+
+  if (t->size_lg2 == 0) return NULL;
+  e = upb_getentry(t, hash);
+  if (upb_tabent_isempty(e)) return NULL;
+  while (1) {
+    if (eql(e->key, key)) return e;
+    if ((e = e->next) == NULL) return NULL;
+  }
+}
+
+static upb_tabent *findentry_mutable(upb_table *t, lookupkey_t key,
+                                     uint32_t hash, eqlfunc_t *eql) {
+  return (upb_tabent*)findentry(t, key, hash, eql);
+}
+
+static bool lookup(const upb_table *t, lookupkey_t key, upb_value *v,
+                   uint32_t hash, eqlfunc_t *eql) {
+  const upb_tabent *e = findentry(t, key, hash, eql);
+  if (e) {
+    if (v) {
+      _upb_value_setval(v, e->val.val, t->ctype);
+    }
+    return true;
+  } else {
+    return false;
+  }
+}
+
+/* The given key must not already exist in the table. */
+static void insert(upb_table *t, lookupkey_t key, upb_tabkey tabkey,
+                   upb_value val, uint32_t hash,
+                   hashfunc_t *hashfunc, eqlfunc_t *eql) {
+  upb_tabent *mainpos_e;
+  upb_tabent *our_e;
+
+  UPB_ASSERT(findentry(t, key, hash, eql) == NULL);
+  UPB_ASSERT_DEBUGVAR(val.ctype == t->ctype);
+
+  t->count++;
+  mainpos_e = getentry_mutable(t, hash);
+  our_e = mainpos_e;
+
+  if (upb_tabent_isempty(mainpos_e)) {
+    /* Our main position is empty; use it. */
+    our_e->next = NULL;
+  } else {
+    /* Collision. */
+    upb_tabent *new_e = emptyent(t);
+    /* Head of collider's chain. */
+    upb_tabent *chain = getentry_mutable(t, hashfunc(mainpos_e->key));
+    if (chain == mainpos_e) {
+      /* Existing ent is in its main posisiton (it has the same hash as us, and
+       * is the head of our chain).  Insert to new ent and append to this chain. */
+      new_e->next = mainpos_e->next;
+      mainpos_e->next = new_e;
+      our_e = new_e;
+    } else {
+      /* Existing ent is not in its main position (it is a node in some other
+       * chain).  This implies that no existing ent in the table has our hash.
+       * Evict it (updating its chain) and use its ent for head of our chain. */
+      *new_e = *mainpos_e;  /* copies next. */
+      while (chain->next != mainpos_e) {
+        chain = (upb_tabent*)chain->next;
+        UPB_ASSERT(chain);
+      }
+      chain->next = new_e;
+      our_e = mainpos_e;
+      our_e->next = NULL;
+    }
+  }
+  our_e->key = tabkey;
+  our_e->val.val = val.val;
+  UPB_ASSERT(findentry(t, key, hash, eql) == our_e);
+}
+
+static bool rm(upb_table *t, lookupkey_t key, upb_value *val,
+               upb_tabkey *removed, uint32_t hash, eqlfunc_t *eql) {
+  upb_tabent *chain = getentry_mutable(t, hash);
+  if (upb_tabent_isempty(chain)) return false;
+  if (eql(chain->key, key)) {
+    /* Element to remove is at the head of its chain. */
+    t->count--;
+    if (val) _upb_value_setval(val, chain->val.val, t->ctype);
+    if (removed) *removed = chain->key;
+    if (chain->next) {
+      upb_tabent *move = (upb_tabent*)chain->next;
+      *chain = *move;
+      move->key = 0;  /* Make the slot empty. */
+    } else {
+      chain->key = 0;  /* Make the slot empty. */
+    }
+    return true;
+  } else {
+    /* Element to remove is either in a non-head position or not in the
+     * table. */
+    while (chain->next && !eql(chain->next->key, key)) {
+      chain = (upb_tabent*)chain->next;
+    }
+    if (chain->next) {
+      /* Found element to remove. */
+      upb_tabent *rm = (upb_tabent*)chain->next;
+      t->count--;
+      if (val) _upb_value_setval(val, chain->next->val.val, t->ctype);
+      if (removed) *removed = rm->key;
+      rm->key = 0;  /* Make the slot empty. */
+      chain->next = rm->next;
+      return true;
+    } else {
+      /* Element to remove is not in the table. */
+      return false;
+    }
+  }
+}
+
+static size_t next(const upb_table *t, size_t i) {
+  do {
+    if (++i >= upb_table_size(t))
+      return SIZE_MAX;
+  } while(upb_tabent_isempty(&t->entries[i]));
+
+  return i;
+}
+
+static size_t begin(const upb_table *t) {
+  return next(t, -1);
+}
+
+
+/* upb_strtable ***************************************************************/
+
+/* A simple "subclass" of upb_table that only adds a hash function for strings. */
+
+static upb_tabkey strcopy(lookupkey_t k2, upb_alloc *a) {
+  uint32_t len = (uint32_t) k2.str.len;
+  char *str = upb_malloc(a, k2.str.len + sizeof(uint32_t) + 1);
+  if (str == NULL) return 0;
+  memcpy(str, &len, sizeof(uint32_t));
+  memcpy(str + sizeof(uint32_t), k2.str.str, k2.str.len);
+  str[sizeof(uint32_t) + k2.str.len] = '\0';
+  return (uintptr_t)str;
+}
+
+static uint32_t strhash(upb_tabkey key) {
+  uint32_t len;
+  char *str = upb_tabstr(key, &len);
+  return upb_murmur_hash2(str, len, 0);
+}
+
+static bool streql(upb_tabkey k1, lookupkey_t k2) {
+  uint32_t len;
+  char *str = upb_tabstr(k1, &len);
+  return len == k2.str.len && memcmp(str, k2.str.str, len) == 0;
+}
+
+bool upb_strtable_init2(upb_strtable *t, upb_ctype_t ctype, upb_alloc *a) {
+  return init(&t->t, ctype, 2, a);
+}
+
+void upb_strtable_uninit2(upb_strtable *t, upb_alloc *a) {
+  size_t i;
+  for (i = 0; i < upb_table_size(&t->t); i++)
+    upb_free(a, (void*)t->t.entries[i].key);
+  uninit(&t->t, a);
+}
+
+bool upb_strtable_resize(upb_strtable *t, size_t size_lg2, upb_alloc *a) {
+  upb_strtable new_table;
+  upb_strtable_iter i;
+
+  upb_check_alloc(&t->t, a);
+
+  if (!init(&new_table.t, t->t.ctype, size_lg2, a))
+    return false;
+  upb_strtable_begin(&i, t);
+  for ( ; !upb_strtable_done(&i); upb_strtable_next(&i)) {
+    upb_strtable_insert3(
+        &new_table,
+        upb_strtable_iter_key(&i),
+        upb_strtable_iter_keylength(&i),
+        upb_strtable_iter_value(&i),
+        a);
+  }
+  upb_strtable_uninit2(t, a);
+  *t = new_table;
+  return true;
+}
+
+bool upb_strtable_insert3(upb_strtable *t, const char *k, size_t len,
+                          upb_value v, upb_alloc *a) {
+  lookupkey_t key;
+  upb_tabkey tabkey;
+  uint32_t hash;
+
+  upb_check_alloc(&t->t, a);
+
+  if (isfull(&t->t)) {
+    /* Need to resize.  New table of double the size, add old elements to it. */
+    if (!upb_strtable_resize(t, t->t.size_lg2 + 1, a)) {
+      return false;
+    }
+  }
+
+  key = strkey2(k, len);
+  tabkey = strcopy(key, a);
+  if (tabkey == 0) return false;
+
+  hash = upb_murmur_hash2(key.str.str, key.str.len, 0);
+  insert(&t->t, key, tabkey, v, hash, &strhash, &streql);
+  return true;
+}
+
+bool upb_strtable_lookup2(const upb_strtable *t, const char *key, size_t len,
+                          upb_value *v) {
+  uint32_t hash = upb_murmur_hash2(key, len, 0);
+  return lookup(&t->t, strkey2(key, len), v, hash, &streql);
+}
+
+bool upb_strtable_remove3(upb_strtable *t, const char *key, size_t len,
+                         upb_value *val, upb_alloc *alloc) {
+  uint32_t hash = upb_murmur_hash2(key, len, 0);
+  upb_tabkey tabkey;
+  if (rm(&t->t, strkey2(key, len), val, &tabkey, hash, &streql)) {
+    upb_free(alloc, (void*)tabkey);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+/* Iteration */
+
+static const upb_tabent *str_tabent(const upb_strtable_iter *i) {
+  return &i->t->t.entries[i->index];
+}
+
+void upb_strtable_begin(upb_strtable_iter *i, const upb_strtable *t) {
+  i->t = t;
+  i->index = begin(&t->t);
+}
+
+void upb_strtable_next(upb_strtable_iter *i) {
+  i->index = next(&i->t->t, i->index);
+}
+
+bool upb_strtable_done(const upb_strtable_iter *i) {
+  if (!i->t) return true;
+  return i->index >= upb_table_size(&i->t->t) ||
+         upb_tabent_isempty(str_tabent(i));
+}
+
+const char *upb_strtable_iter_key(const upb_strtable_iter *i) {
+  UPB_ASSERT(!upb_strtable_done(i));
+  return upb_tabstr(str_tabent(i)->key, NULL);
+}
+
+size_t upb_strtable_iter_keylength(const upb_strtable_iter *i) {
+  uint32_t len;
+  UPB_ASSERT(!upb_strtable_done(i));
+  upb_tabstr(str_tabent(i)->key, &len);
+  return len;
+}
+
+upb_value upb_strtable_iter_value(const upb_strtable_iter *i) {
+  UPB_ASSERT(!upb_strtable_done(i));
+  return _upb_value_val(str_tabent(i)->val.val, i->t->t.ctype);
+}
+
+void upb_strtable_iter_setdone(upb_strtable_iter *i) {
+  i->t = NULL;
+  i->index = SIZE_MAX;
+}
+
+bool upb_strtable_iter_isequal(const upb_strtable_iter *i1,
+                               const upb_strtable_iter *i2) {
+  if (upb_strtable_done(i1) && upb_strtable_done(i2))
+    return true;
+  return i1->t == i2->t && i1->index == i2->index;
+}
+
+
+/* upb_inttable ***************************************************************/
+
+/* For inttables we use a hybrid structure where small keys are kept in an
+ * array and large keys are put in the hash table. */
+
+static uint32_t inthash(upb_tabkey key) { return upb_inthash(key); }
+
+static bool inteql(upb_tabkey k1, lookupkey_t k2) {
+  return k1 == k2.num;
+}
+
+static upb_tabval *mutable_array(upb_inttable *t) {
+  return (upb_tabval*)t->array;
+}
+
+static upb_tabval *inttable_val(upb_inttable *t, uintptr_t key) {
+  if (key < t->array_size) {
+    return upb_arrhas(t->array[key]) ? &(mutable_array(t)[key]) : NULL;
+  } else {
+    upb_tabent *e =
+        findentry_mutable(&t->t, intkey(key), upb_inthash(key), &inteql);
+    return e ? &e->val : NULL;
+  }
+}
+
+static const upb_tabval *inttable_val_const(const upb_inttable *t,
+                                            uintptr_t key) {
+  return inttable_val((upb_inttable*)t, key);
+}
+
+size_t upb_inttable_count(const upb_inttable *t) {
+  return t->t.count + t->array_count;
+}
+
+static void check(upb_inttable *t) {
+  UPB_UNUSED(t);
+#if defined(UPB_DEBUG_TABLE) && !defined(NDEBUG)
+  {
+    /* This check is very expensive (makes inserts/deletes O(N)). */
+    size_t count = 0;
+    upb_inttable_iter i;
+    upb_inttable_begin(&i, t);
+    for(; !upb_inttable_done(&i); upb_inttable_next(&i), count++) {
+      UPB_ASSERT(upb_inttable_lookup(t, upb_inttable_iter_key(&i), NULL));
+    }
+    UPB_ASSERT(count == upb_inttable_count(t));
+  }
+#endif
+}
+
+bool upb_inttable_sizedinit(upb_inttable *t, upb_ctype_t ctype,
+                            size_t asize, int hsize_lg2, upb_alloc *a) {
+  size_t array_bytes;
+
+  if (!init(&t->t, ctype, hsize_lg2, a)) return false;
+  /* Always make the array part at least 1 long, so that we know key 0
+   * won't be in the hash part, which simplifies things. */
+  t->array_size = UPB_MAX(1, asize);
+  t->array_count = 0;
+  array_bytes = t->array_size * sizeof(upb_value);
+  t->array = upb_malloc(a, array_bytes);
+  if (!t->array) {
+    uninit(&t->t, a);
+    return false;
+  }
+  memset(mutable_array(t), 0xff, array_bytes);
+  check(t);
+  return true;
+}
+
+bool upb_inttable_init2(upb_inttable *t, upb_ctype_t ctype, upb_alloc *a) {
+  return upb_inttable_sizedinit(t, ctype, 0, 4, a);
+}
+
+void upb_inttable_uninit2(upb_inttable *t, upb_alloc *a) {
+  uninit(&t->t, a);
+  upb_free(a, mutable_array(t));
+}
+
+bool upb_inttable_insert2(upb_inttable *t, uintptr_t key, upb_value val,
+                          upb_alloc *a) {
+  upb_tabval tabval;
+  tabval.val = val.val;
+  UPB_ASSERT(upb_arrhas(tabval));  /* This will reject (uint64_t)-1.  Fix this. */
+
+  upb_check_alloc(&t->t, a);
+
+  if (key < t->array_size) {
+    UPB_ASSERT(!upb_arrhas(t->array[key]));
+    t->array_count++;
+    mutable_array(t)[key].val = val.val;
+  } else {
+    if (isfull(&t->t)) {
+      /* Need to resize the hash part, but we re-use the array part. */
+      size_t i;
+      upb_table new_table;
+
+      if (!init(&new_table, t->t.ctype, t->t.size_lg2 + 1, a)) {
+        return false;
+      }
+
+      for (i = begin(&t->t); i < upb_table_size(&t->t); i = next(&t->t, i)) {
+        const upb_tabent *e = &t->t.entries[i];
+        uint32_t hash;
+        upb_value v;
+
+        _upb_value_setval(&v, e->val.val, t->t.ctype);
+        hash = upb_inthash(e->key);
+        insert(&new_table, intkey(e->key), e->key, v, hash, &inthash, &inteql);
+      }
+
+      UPB_ASSERT(t->t.count == new_table.count);
+
+      uninit(&t->t, a);
+      t->t = new_table;
+    }
+    insert(&t->t, intkey(key), key, val, upb_inthash(key), &inthash, &inteql);
+  }
+  check(t);
+  return true;
+}
+
+bool upb_inttable_lookup(const upb_inttable *t, uintptr_t key, upb_value *v) {
+  const upb_tabval *table_v = inttable_val_const(t, key);
+  if (!table_v) return false;
+  if (v) _upb_value_setval(v, table_v->val, t->t.ctype);
+  return true;
+}
+
+bool upb_inttable_replace(upb_inttable *t, uintptr_t key, upb_value val) {
+  upb_tabval *table_v = inttable_val(t, key);
+  if (!table_v) return false;
+  table_v->val = val.val;
+  return true;
+}
+
+bool upb_inttable_remove(upb_inttable *t, uintptr_t key, upb_value *val) {
+  bool success;
+  if (key < t->array_size) {
+    if (upb_arrhas(t->array[key])) {
+      upb_tabval empty = UPB_TABVALUE_EMPTY_INIT;
+      t->array_count--;
+      if (val) {
+        _upb_value_setval(val, t->array[key].val, t->t.ctype);
+      }
+      mutable_array(t)[key] = empty;
+      success = true;
+    } else {
+      success = false;
+    }
+  } else {
+    success = rm(&t->t, intkey(key), val, NULL, upb_inthash(key), &inteql);
+  }
+  check(t);
+  return success;
+}
+
+bool upb_inttable_push2(upb_inttable *t, upb_value val, upb_alloc *a) {
+  upb_check_alloc(&t->t, a);
+  return upb_inttable_insert2(t, upb_inttable_count(t), val, a);
+}
+
+upb_value upb_inttable_pop(upb_inttable *t) {
+  upb_value val;
+  bool ok = upb_inttable_remove(t, upb_inttable_count(t) - 1, &val);
+  UPB_ASSERT(ok);
+  return val;
+}
+
+bool upb_inttable_insertptr2(upb_inttable *t, const void *key, upb_value val,
+                             upb_alloc *a) {
+  upb_check_alloc(&t->t, a);
+  return upb_inttable_insert2(t, (uintptr_t)key, val, a);
+}
+
+bool upb_inttable_lookupptr(const upb_inttable *t, const void *key,
+                            upb_value *v) {
+  return upb_inttable_lookup(t, (uintptr_t)key, v);
+}
+
+bool upb_inttable_removeptr(upb_inttable *t, const void *key, upb_value *val) {
+  return upb_inttable_remove(t, (uintptr_t)key, val);
+}
+
+void upb_inttable_compact2(upb_inttable *t, upb_alloc *a) {
+  /* A power-of-two histogram of the table keys. */
+  size_t counts[UPB_MAXARRSIZE + 1] = {0};
+
+  /* The max key in each bucket. */
+  uintptr_t max[UPB_MAXARRSIZE + 1] = {0};
+
+  upb_inttable_iter i;
+  size_t arr_count;
+  int size_lg2;
+  upb_inttable new_t;
+
+  upb_check_alloc(&t->t, a);
+
+  upb_inttable_begin(&i, t);
+  for (; !upb_inttable_done(&i); upb_inttable_next(&i)) {
+    uintptr_t key = upb_inttable_iter_key(&i);
+    int bucket = log2ceil(key);
+    max[bucket] = UPB_MAX(max[bucket], key);
+    counts[bucket]++;
+  }
+
+  /* Find the largest power of two that satisfies the MIN_DENSITY
+   * definition (while actually having some keys). */
+  arr_count = upb_inttable_count(t);
+
+  for (size_lg2 = ARRAY_SIZE(counts) - 1; size_lg2 > 0; size_lg2--) {
+    if (counts[size_lg2] == 0) {
+      /* We can halve again without losing any entries. */
+      continue;
+    } else if (arr_count >= (1 << size_lg2) * MIN_DENSITY) {
+      break;
+    }
+
+    arr_count -= counts[size_lg2];
+  }
+
+  UPB_ASSERT(arr_count <= upb_inttable_count(t));
+
+  {
+    /* Insert all elements into new, perfectly-sized table. */
+    size_t arr_size = max[size_lg2] + 1;  /* +1 so arr[max] will fit. */
+    size_t hash_count = upb_inttable_count(t) - arr_count;
+    size_t hash_size = hash_count ? (hash_count / MAX_LOAD) + 1 : 0;
+    int hashsize_lg2 = log2ceil(hash_size);
+
+    upb_inttable_sizedinit(&new_t, t->t.ctype, arr_size, hashsize_lg2, a);
+    upb_inttable_begin(&i, t);
+    for (; !upb_inttable_done(&i); upb_inttable_next(&i)) {
+      uintptr_t k = upb_inttable_iter_key(&i);
+      upb_inttable_insert2(&new_t, k, upb_inttable_iter_value(&i), a);
+    }
+    UPB_ASSERT(new_t.array_size == arr_size);
+    UPB_ASSERT(new_t.t.size_lg2 == hashsize_lg2);
+  }
+  upb_inttable_uninit2(t, a);
+  *t = new_t;
+}
+
+/* Iteration. */
+
+static const upb_tabent *int_tabent(const upb_inttable_iter *i) {
+  UPB_ASSERT(!i->array_part);
+  return &i->t->t.entries[i->index];
+}
+
+static upb_tabval int_arrent(const upb_inttable_iter *i) {
+  UPB_ASSERT(i->array_part);
+  return i->t->array[i->index];
+}
+
+void upb_inttable_begin(upb_inttable_iter *i, const upb_inttable *t) {
+  i->t = t;
+  i->index = -1;
+  i->array_part = true;
+  upb_inttable_next(i);
+}
+
+void upb_inttable_next(upb_inttable_iter *iter) {
+  const upb_inttable *t = iter->t;
+  if (iter->array_part) {
+    while (++iter->index < t->array_size) {
+      if (upb_arrhas(int_arrent(iter))) {
+        return;
+      }
+    }
+    iter->array_part = false;
+    iter->index = begin(&t->t);
+  } else {
+    iter->index = next(&t->t, iter->index);
+  }
+}
+
+bool upb_inttable_done(const upb_inttable_iter *i) {
+  if (!i->t) return true;
+  if (i->array_part) {
+    return i->index >= i->t->array_size ||
+           !upb_arrhas(int_arrent(i));
+  } else {
+    return i->index >= upb_table_size(&i->t->t) ||
+           upb_tabent_isempty(int_tabent(i));
+  }
+}
+
+uintptr_t upb_inttable_iter_key(const upb_inttable_iter *i) {
+  UPB_ASSERT(!upb_inttable_done(i));
+  return i->array_part ? i->index : int_tabent(i)->key;
+}
+
+upb_value upb_inttable_iter_value(const upb_inttable_iter *i) {
+  UPB_ASSERT(!upb_inttable_done(i));
+  return _upb_value_val(
+      i->array_part ? i->t->array[i->index].val : int_tabent(i)->val.val,
+      i->t->t.ctype);
+}
+
+void upb_inttable_iter_setdone(upb_inttable_iter *i) {
+  i->t = NULL;
+  i->index = SIZE_MAX;
+  i->array_part = false;
+}
+
+bool upb_inttable_iter_isequal(const upb_inttable_iter *i1,
+                                          const upb_inttable_iter *i2) {
+  if (upb_inttable_done(i1) && upb_inttable_done(i2))
+    return true;
+  return i1->t == i2->t && i1->index == i2->index &&
+         i1->array_part == i2->array_part;
+}
+
+#if defined(UPB_UNALIGNED_READS_OK) || defined(__s390x__)
+/* -----------------------------------------------------------------------------
+ * MurmurHash2, by Austin Appleby (released as public domain).
+ * Reformatted and C99-ified by Joshua Haberman.
+ * Note - This code makes a few assumptions about how your machine behaves -
+ *   1. We can read a 4-byte value from any address without crashing
+ *   2. sizeof(int) == 4 (in upb this limitation is removed by using uint32_t
+ * And it has a few limitations -
+ *   1. It will not work incrementally.
+ *   2. It will not produce the same results on little-endian and big-endian
+ *      machines. */
+uint32_t upb_murmur_hash2(const void *key, size_t len, uint32_t seed) {
+  /* 'm' and 'r' are mixing constants generated offline.
+   * They're not really 'magic', they just happen to work well. */
+  const uint32_t m = 0x5bd1e995;
+  const int32_t r = 24;
+
+  /* Initialize the hash to a 'random' value */
+  uint32_t h = seed ^ len;
+
+  /* Mix 4 bytes at a time into the hash */
+  const uint8_t * data = (const uint8_t *)key;
+  while(len >= 4) {
+    uint32_t k;
+    memcpy(&k, data, sizeof(k));
+
+    k *= m;
+    k ^= k >> r;
+    k *= m;
+
+    h *= m;
+    h ^= k;
+
+    data += 4;
+    len -= 4;
+  }
+
+  /* Handle the last few bytes of the input array */
+  switch(len) {
+    case 3: h ^= data[2] << 16;
+    case 2: h ^= data[1] << 8;
+    case 1: h ^= data[0]; h *= m;
+  };
+
+  /* Do a few final mixes of the hash to ensure the last few
+   * bytes are well-incorporated. */
+  h ^= h >> 13;
+  h *= m;
+  h ^= h >> 15;
+
+  return h;
+}
+
+#else /* !UPB_UNALIGNED_READS_OK */
+
+/* -----------------------------------------------------------------------------
+ * MurmurHashAligned2, by Austin Appleby
+ * Same algorithm as MurmurHash2, but only does aligned reads - should be safer
+ * on certain platforms.
+ * Performance will be lower than MurmurHash2 */
+
+#define MIX(h,k,m) { k *= m; k ^= k >> r; k *= m; h *= m; h ^= k; }
+
+uint32_t upb_murmur_hash2(const void * key, size_t len, uint32_t seed) {
+  const uint32_t m = 0x5bd1e995;
+  const int32_t r = 24;
+  const uint8_t * data = (const uint8_t *)key;
+  uint32_t h = (uint32_t)(seed ^ len);
+  uint8_t align = (uintptr_t)data & 3;
+
+  if(align && (len >= 4)) {
+    /* Pre-load the temp registers */
+    uint32_t t = 0, d = 0;
+    int32_t sl;
+    int32_t sr;
+
+    switch(align) {
+      case 1: t |= data[2] << 16;
+      case 2: t |= data[1] << 8;
+      case 3: t |= data[0];
+    }
+
+    t <<= (8 * align);
+
+    data += 4-align;
+    len -= 4-align;
+
+    sl = 8 * (4-align);
+    sr = 8 * align;
+
+    /* Mix */
+
+    while(len >= 4) {
+      uint32_t k;
+
+      d = *(uint32_t *)data;
+      t = (t >> sr) | (d << sl);
+
+      k = t;
+
+      MIX(h,k,m);
+
+      t = d;
+
+      data += 4;
+      len -= 4;
+    }
+
+    /* Handle leftover data in temp registers */
+
+    d = 0;
+
+    if(len >= align) {
+      uint32_t k;
+
+      switch(align) {
+        case 3: d |= data[2] << 16;
+        case 2: d |= data[1] << 8;
+        case 1: d |= data[0];
+      }
+
+      k = (t >> sr) | (d << sl);
+      MIX(h,k,m);
+
+      data += align;
+      len -= align;
+
+      /* ----------
+       * Handle tail bytes */
+
+      switch(len) {
+        case 3: h ^= data[2] << 16;
+        case 2: h ^= data[1] << 8;
+        case 1: h ^= data[0]; h *= m;
+      };
+    } else {
+      switch(len) {
+        case 3: d |= data[2] << 16;
+        case 2: d |= data[1] << 8;
+        case 1: d |= data[0];
+        case 0: h ^= (t >> sr) | (d << sl); h *= m;
+      }
+    }
+
+    h ^= h >> 13;
+    h *= m;
+    h ^= h >> 15;
+
+    return h;
+  } else {
+    while(len >= 4) {
+      uint32_t k = *(uint32_t *)data;
+
+      MIX(h,k,m);
+
+      data += 4;
+      len -= 4;
+    }
+
+    /* ----------
+     * Handle tail bytes */
+
+    switch(len) {
+      case 3: h ^= data[2] << 16;
+      case 2: h ^= data[1] << 8;
+      case 1: h ^= data[0]; h *= m;
+    };
+
+    h ^= h >> 13;
+    h *= m;
+    h ^= h >> 15;
+
+    return h;
+  }
+}
+#undef MIX
+
+#endif /* UPB_UNALIGNED_READS_OK */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.int.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.int.h
new file mode 100644
index 0000000..9444771
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/table.int.h	
@@ -0,0 +1,519 @@
+/*
+** upb_table
+**
+** This header is INTERNAL-ONLY!  Its interfaces are not public or stable!
+** This file defines very fast int->upb_value (inttable) and string->upb_value
+** (strtable) hash tables.
+**
+** The table uses chained scatter with Brent's variation (inspired by the Lua
+** implementation of hash tables).  The hash function for strings is Austin
+** Appleby's "MurmurHash."
+**
+** The inttable uses uintptr_t as its key, which guarantees it can be used to
+** store pointers or integers of at least 32 bits (upb isn't really useful on
+** systems where sizeof(void*) < 4).
+**
+** The table must be homogenous (all values of the same type).  In debug
+** mode, we check this on insert and lookup.
+*/
+
+#ifndef UPB_TABLE_H_
+#define UPB_TABLE_H_
+
+#include <stdint.h>
+#include <string.h>
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* upb_value ******************************************************************/
+
+/* A tagged union (stored untagged inside the table) so that we can check that
+ * clients calling table accessors are correctly typed without having to have
+ * an explosion of accessors. */
+typedef enum {
+  UPB_CTYPE_INT32    = 1,
+  UPB_CTYPE_INT64    = 2,
+  UPB_CTYPE_UINT32   = 3,
+  UPB_CTYPE_UINT64   = 4,
+  UPB_CTYPE_BOOL     = 5,
+  UPB_CTYPE_CSTR     = 6,
+  UPB_CTYPE_PTR      = 7,
+  UPB_CTYPE_CONSTPTR = 8,
+  UPB_CTYPE_FPTR     = 9,
+  UPB_CTYPE_FLOAT    = 10,
+  UPB_CTYPE_DOUBLE   = 11
+} upb_ctype_t;
+
+typedef struct {
+  uint64_t val;
+#ifndef NDEBUG
+  /* In debug mode we carry the value type around also so we can check accesses
+   * to be sure the right member is being read. */
+  upb_ctype_t ctype;
+#endif
+} upb_value;
+
+#ifdef NDEBUG
+#define SET_TYPE(dest, val)      UPB_UNUSED(val)
+#else
+#define SET_TYPE(dest, val) dest = val
+#endif
+
+/* Like strdup(), which isn't always available since it's not ANSI C. */
+char *upb_strdup(const char *s, upb_alloc *a);
+/* Variant that works with a length-delimited rather than NULL-delimited string,
+ * as supported by strtable. */
+char *upb_strdup2(const char *s, size_t len, upb_alloc *a);
+
+UPB_INLINE char *upb_gstrdup(const char *s) {
+  return upb_strdup(s, &upb_alloc_global);
+}
+
+UPB_INLINE void _upb_value_setval(upb_value *v, uint64_t val,
+                                  upb_ctype_t ctype) {
+  v->val = val;
+  SET_TYPE(v->ctype, ctype);
+}
+
+UPB_INLINE upb_value _upb_value_val(uint64_t val, upb_ctype_t ctype) {
+  upb_value ret;
+  _upb_value_setval(&ret, val, ctype);
+  return ret;
+}
+
+/* For each value ctype, define the following set of functions:
+ *
+ * // Get/set an int32 from a upb_value.
+ * int32_t upb_value_getint32(upb_value val);
+ * void upb_value_setint32(upb_value *val, int32_t cval);
+ *
+ * // Construct a new upb_value from an int32.
+ * upb_value upb_value_int32(int32_t val); */
+#define FUNCS(name, membername, type_t, converter, proto_type) \
+  UPB_INLINE void upb_value_set ## name(upb_value *val, type_t cval) { \
+    val->val = (converter)cval; \
+    SET_TYPE(val->ctype, proto_type); \
+  } \
+  UPB_INLINE upb_value upb_value_ ## name(type_t val) { \
+    upb_value ret; \
+    upb_value_set ## name(&ret, val); \
+    return ret; \
+  } \
+  UPB_INLINE type_t upb_value_get ## name(upb_value val) { \
+    UPB_ASSERT_DEBUGVAR(val.ctype == proto_type); \
+    return (type_t)(converter)val.val; \
+  }
+
+FUNCS(int32,    int32,        int32_t,      int32_t,    UPB_CTYPE_INT32)
+FUNCS(int64,    int64,        int64_t,      int64_t,    UPB_CTYPE_INT64)
+FUNCS(uint32,   uint32,       uint32_t,     uint32_t,   UPB_CTYPE_UINT32)
+FUNCS(uint64,   uint64,       uint64_t,     uint64_t,   UPB_CTYPE_UINT64)
+FUNCS(bool,     _bool,        bool,         bool,       UPB_CTYPE_BOOL)
+FUNCS(cstr,     cstr,         char*,        uintptr_t,  UPB_CTYPE_CSTR)
+FUNCS(ptr,      ptr,          void*,        uintptr_t,  UPB_CTYPE_PTR)
+FUNCS(constptr, constptr,     const void*,  uintptr_t,  UPB_CTYPE_CONSTPTR)
+FUNCS(fptr,     fptr,         upb_func*,    uintptr_t,  UPB_CTYPE_FPTR)
+
+#undef FUNCS
+
+UPB_INLINE void upb_value_setfloat(upb_value *val, float cval) {
+  memcpy(&val->val, &cval, sizeof(cval));
+  SET_TYPE(val->ctype, UPB_CTYPE_FLOAT);
+}
+
+UPB_INLINE void upb_value_setdouble(upb_value *val, double cval) {
+  memcpy(&val->val, &cval, sizeof(cval));
+  SET_TYPE(val->ctype, UPB_CTYPE_DOUBLE);
+}
+
+UPB_INLINE upb_value upb_value_float(float cval) {
+  upb_value ret;
+  upb_value_setfloat(&ret, cval);
+  return ret;
+}
+
+UPB_INLINE upb_value upb_value_double(double cval) {
+  upb_value ret;
+  upb_value_setdouble(&ret, cval);
+  return ret;
+}
+
+#undef SET_TYPE
+
+
+/* upb_tabkey *****************************************************************/
+
+/* Either:
+ *   1. an actual integer key, or
+ *   2. a pointer to a string prefixed by its uint32_t length, owned by us.
+ *
+ * ...depending on whether this is a string table or an int table.  We would
+ * make this a union of those two types, but C89 doesn't support statically
+ * initializing a non-first union member. */
+typedef uintptr_t upb_tabkey;
+
+UPB_INLINE char *upb_tabstr(upb_tabkey key, uint32_t *len) {
+  char* mem = (char*)key;
+  if (len) memcpy(len, mem, sizeof(*len));
+  return mem + sizeof(*len);
+}
+
+
+/* upb_tabval *****************************************************************/
+
+typedef struct {
+  uint64_t val;
+} upb_tabval;
+
+#define UPB_TABVALUE_EMPTY_INIT  {-1}
+
+
+/* upb_table ******************************************************************/
+
+typedef struct _upb_tabent {
+  upb_tabkey key;
+  upb_tabval val;
+
+  /* Internal chaining.  This is const so we can create static initializers for
+   * tables.  We cast away const sometimes, but *only* when the containing
+   * upb_table is known to be non-const.  This requires a bit of care, but
+   * the subtlety is confined to table.c. */
+  const struct _upb_tabent *next;
+} upb_tabent;
+
+typedef struct {
+  size_t count;          /* Number of entries in the hash part. */
+  size_t mask;           /* Mask to turn hash value -> bucket. */
+  upb_ctype_t ctype;     /* Type of all values. */
+  uint8_t size_lg2;      /* Size of the hashtable part is 2^size_lg2 entries. */
+
+  /* Hash table entries.
+   * Making this const isn't entirely accurate; what we really want is for it to
+   * have the same const-ness as the table it's inside.  But there's no way to
+   * declare that in C.  So we have to make it const so that we can statically
+   * initialize const hash tables.  Then we cast away const when we have to.
+   */
+  const upb_tabent *entries;
+
+#ifndef NDEBUG
+  /* This table's allocator.  We make the user pass it in to every relevant
+   * function and only use this to check it in debug mode.  We do this solely
+   * to keep upb_table as small as possible.  This might seem slightly paranoid
+   * but the plan is to use upb_table for all map fields and extension sets in
+   * a forthcoming message representation, so there could be a lot of these.
+   * If this turns out to be too annoying later, we can change it (since this
+   * is an internal-only header file). */
+  upb_alloc *alloc;
+#endif
+} upb_table;
+
+typedef struct {
+  upb_table t;
+} upb_strtable;
+
+typedef struct {
+  upb_table t;              /* For entries that don't fit in the array part. */
+  const upb_tabval *array;  /* Array part of the table. See const note above. */
+  size_t array_size;        /* Array part size. */
+  size_t array_count;       /* Array part number of elements. */
+} upb_inttable;
+
+#define UPB_INTTABLE_INIT(count, mask, ctype, size_lg2, ent, a, asize, acount) \
+  {UPB_TABLE_INIT(count, mask, ctype, size_lg2, ent), a, asize, acount}
+
+#define UPB_EMPTY_INTTABLE_INIT(ctype) \
+  UPB_INTTABLE_INIT(0, 0, ctype, 0, NULL, NULL, 0, 0)
+
+#define UPB_ARRAY_EMPTYENT -1
+
+UPB_INLINE size_t upb_table_size(const upb_table *t) {
+  if (t->size_lg2 == 0)
+    return 0;
+  else
+    return 1 << t->size_lg2;
+}
+
+/* Internal-only functions, in .h file only out of necessity. */
+UPB_INLINE bool upb_tabent_isempty(const upb_tabent *e) {
+  return e->key == 0;
+}
+
+/* Used by some of the unit tests for generic hashing functionality. */
+uint32_t upb_murmur_hash2(const void * key, size_t len, uint32_t seed);
+
+UPB_INLINE uintptr_t upb_intkey(uintptr_t key) {
+  return key;
+}
+
+UPB_INLINE uint32_t upb_inthash(uintptr_t key) {
+  return (uint32_t)key;
+}
+
+static const upb_tabent *upb_getentry(const upb_table *t, uint32_t hash) {
+  return t->entries + (hash & t->mask);
+}
+
+UPB_INLINE bool upb_arrhas(upb_tabval key) {
+  return key.val != (uint64_t)-1;
+}
+
+/* Initialize and uninitialize a table, respectively.  If memory allocation
+ * failed, false is returned that the table is uninitialized. */
+bool upb_inttable_init2(upb_inttable *table, upb_ctype_t ctype, upb_alloc *a);
+bool upb_strtable_init2(upb_strtable *table, upb_ctype_t ctype, upb_alloc *a);
+void upb_inttable_uninit2(upb_inttable *table, upb_alloc *a);
+void upb_strtable_uninit2(upb_strtable *table, upb_alloc *a);
+
+UPB_INLINE bool upb_inttable_init(upb_inttable *table, upb_ctype_t ctype) {
+  return upb_inttable_init2(table, ctype, &upb_alloc_global);
+}
+
+UPB_INLINE bool upb_strtable_init(upb_strtable *table, upb_ctype_t ctype) {
+  return upb_strtable_init2(table, ctype, &upb_alloc_global);
+}
+
+UPB_INLINE void upb_inttable_uninit(upb_inttable *table) {
+  upb_inttable_uninit2(table, &upb_alloc_global);
+}
+
+UPB_INLINE void upb_strtable_uninit(upb_strtable *table) {
+  upb_strtable_uninit2(table, &upb_alloc_global);
+}
+
+/* Returns the number of values in the table. */
+size_t upb_inttable_count(const upb_inttable *t);
+UPB_INLINE size_t upb_strtable_count(const upb_strtable *t) {
+  return t->t.count;
+}
+
+void upb_inttable_packedsize(const upb_inttable *t, size_t *size);
+void upb_strtable_packedsize(const upb_strtable *t, size_t *size);
+upb_inttable *upb_inttable_pack(const upb_inttable *t, void *p, size_t *ofs,
+                                size_t size);
+upb_strtable *upb_strtable_pack(const upb_strtable *t, void *p, size_t *ofs,
+                                size_t size);
+
+/* Inserts the given key into the hashtable with the given value.  The key must
+ * not already exist in the hash table.  For string tables, the key must be
+ * NULL-terminated, and the table will make an internal copy of the key.
+ * Inttables must not insert a value of UINTPTR_MAX.
+ *
+ * If a table resize was required but memory allocation failed, false is
+ * returned and the table is unchanged. */
+bool upb_inttable_insert2(upb_inttable *t, uintptr_t key, upb_value val,
+                          upb_alloc *a);
+bool upb_strtable_insert3(upb_strtable *t, const char *key, size_t len,
+                          upb_value val, upb_alloc *a);
+
+UPB_INLINE bool upb_inttable_insert(upb_inttable *t, uintptr_t key,
+                                    upb_value val) {
+  return upb_inttable_insert2(t, key, val, &upb_alloc_global);
+}
+
+UPB_INLINE bool upb_strtable_insert2(upb_strtable *t, const char *key,
+                                     size_t len, upb_value val) {
+  return upb_strtable_insert3(t, key, len, val, &upb_alloc_global);
+}
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_insert(upb_strtable *t, const char *key,
+                                    upb_value val) {
+  return upb_strtable_insert2(t, key, strlen(key), val);
+}
+
+/* Looks up key in this table, returning "true" if the key was found.
+ * If v is non-NULL, copies the value for this key into *v. */
+bool upb_inttable_lookup(const upb_inttable *t, uintptr_t key, upb_value *v);
+bool upb_strtable_lookup2(const upb_strtable *t, const char *key, size_t len,
+                          upb_value *v);
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_lookup(const upb_strtable *t, const char *key,
+                                    upb_value *v) {
+  return upb_strtable_lookup2(t, key, strlen(key), v);
+}
+
+/* Removes an item from the table.  Returns true if the remove was successful,
+ * and stores the removed item in *val if non-NULL. */
+bool upb_inttable_remove(upb_inttable *t, uintptr_t key, upb_value *val);
+bool upb_strtable_remove3(upb_strtable *t, const char *key, size_t len,
+                          upb_value *val, upb_alloc *alloc);
+
+UPB_INLINE bool upb_strtable_remove2(upb_strtable *t, const char *key,
+                                     size_t len, upb_value *val) {
+  return upb_strtable_remove3(t, key, len, val, &upb_alloc_global);
+}
+
+/* For NULL-terminated strings. */
+UPB_INLINE bool upb_strtable_remove(upb_strtable *t, const char *key,
+                                    upb_value *v) {
+  return upb_strtable_remove2(t, key, strlen(key), v);
+}
+
+/* Updates an existing entry in an inttable.  If the entry does not exist,
+ * returns false and does nothing.  Unlike insert/remove, this does not
+ * invalidate iterators. */
+bool upb_inttable_replace(upb_inttable *t, uintptr_t key, upb_value val);
+
+/* Handy routines for treating an inttable like a stack.  May not be mixed with
+ * other insert/remove calls. */
+bool upb_inttable_push2(upb_inttable *t, upb_value val, upb_alloc *a);
+upb_value upb_inttable_pop(upb_inttable *t);
+
+UPB_INLINE bool upb_inttable_push(upb_inttable *t, upb_value val) {
+  return upb_inttable_push2(t, val, &upb_alloc_global);
+}
+
+/* Convenience routines for inttables with pointer keys. */
+bool upb_inttable_insertptr2(upb_inttable *t, const void *key, upb_value val,
+                             upb_alloc *a);
+bool upb_inttable_removeptr(upb_inttable *t, const void *key, upb_value *val);
+bool upb_inttable_lookupptr(
+    const upb_inttable *t, const void *key, upb_value *val);
+
+UPB_INLINE bool upb_inttable_insertptr(upb_inttable *t, const void *key,
+                                       upb_value val) {
+  return upb_inttable_insertptr2(t, key, val, &upb_alloc_global);
+}
+
+/* Optimizes the table for the current set of entries, for both memory use and
+ * lookup time.  Client should call this after all entries have been inserted;
+ * inserting more entries is legal, but will likely require a table resize. */
+void upb_inttable_compact2(upb_inttable *t, upb_alloc *a);
+
+UPB_INLINE void upb_inttable_compact(upb_inttable *t) {
+  upb_inttable_compact2(t, &upb_alloc_global);
+}
+
+/* A special-case inlinable version of the lookup routine for 32-bit
+ * integers. */
+UPB_INLINE bool upb_inttable_lookup32(const upb_inttable *t, uint32_t key,
+                                      upb_value *v) {
+  *v = upb_value_int32(0);  /* Silence compiler warnings. */
+  if (key < t->array_size) {
+    upb_tabval arrval = t->array[key];
+    if (upb_arrhas(arrval)) {
+      _upb_value_setval(v, arrval.val, t->t.ctype);
+      return true;
+    } else {
+      return false;
+    }
+  } else {
+    const upb_tabent *e;
+    if (t->t.entries == NULL) return false;
+    for (e = upb_getentry(&t->t, upb_inthash(key)); true; e = e->next) {
+      if ((uint32_t)e->key == key) {
+        _upb_value_setval(v, e->val.val, t->t.ctype);
+        return true;
+      }
+      if (e->next == NULL) return false;
+    }
+  }
+}
+
+/* Exposed for testing only. */
+bool upb_strtable_resize(upb_strtable *t, size_t size_lg2, upb_alloc *a);
+
+/* Iterators ******************************************************************/
+
+/* Iterators for int and string tables.  We are subject to some kind of unusual
+ * design constraints:
+ *
+ * For high-level languages:
+ *  - we must be able to guarantee that we don't crash or corrupt memory even if
+ *    the program accesses an invalidated iterator.
+ *
+ * For C++11 range-based for:
+ *  - iterators must be copyable
+ *  - iterators must be comparable
+ *  - it must be possible to construct an "end" value.
+ *
+ * Iteration order is undefined.
+ *
+ * Modifying the table invalidates iterators.  upb_{str,int}table_done() is
+ * guaranteed to work even on an invalidated iterator, as long as the table it
+ * is iterating over has not been freed.  Calling next() or accessing data from
+ * an invalidated iterator yields unspecified elements from the table, but it is
+ * guaranteed not to crash and to return real table elements (except when done()
+ * is true). */
+
+
+/* upb_strtable_iter **********************************************************/
+
+/*   upb_strtable_iter i;
+ *   upb_strtable_begin(&i, t);
+ *   for(; !upb_strtable_done(&i); upb_strtable_next(&i)) {
+ *     const char *key = upb_strtable_iter_key(&i);
+ *     const upb_value val = upb_strtable_iter_value(&i);
+ *     // ...
+ *   }
+ */
+
+typedef struct {
+  const upb_strtable *t;
+  size_t index;
+} upb_strtable_iter;
+
+void upb_strtable_begin(upb_strtable_iter *i, const upb_strtable *t);
+void upb_strtable_next(upb_strtable_iter *i);
+bool upb_strtable_done(const upb_strtable_iter *i);
+const char *upb_strtable_iter_key(const upb_strtable_iter *i);
+size_t upb_strtable_iter_keylength(const upb_strtable_iter *i);
+upb_value upb_strtable_iter_value(const upb_strtable_iter *i);
+void upb_strtable_iter_setdone(upb_strtable_iter *i);
+bool upb_strtable_iter_isequal(const upb_strtable_iter *i1,
+                               const upb_strtable_iter *i2);
+
+
+/* upb_inttable_iter **********************************************************/
+
+/*   upb_inttable_iter i;
+ *   upb_inttable_begin(&i, t);
+ *   for(; !upb_inttable_done(&i); upb_inttable_next(&i)) {
+ *     uintptr_t key = upb_inttable_iter_key(&i);
+ *     upb_value val = upb_inttable_iter_value(&i);
+ *     // ...
+ *   }
+ */
+
+typedef struct {
+  const upb_inttable *t;
+  size_t index;
+  bool array_part;
+} upb_inttable_iter;
+
+void upb_inttable_begin(upb_inttable_iter *i, const upb_inttable *t);
+void upb_inttable_next(upb_inttable_iter *i);
+bool upb_inttable_done(const upb_inttable_iter *i);
+uintptr_t upb_inttable_iter_key(const upb_inttable_iter *i);
+upb_value upb_inttable_iter_value(const upb_inttable_iter *i);
+void upb_inttable_iter_setdone(upb_inttable_iter *i);
+bool upb_inttable_iter_isequal(const upb_inttable_iter *i1,
+                               const upb_inttable_iter *i2);
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_TABLE_H_ */
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.c b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.c
new file mode 100644
index 0000000..b5f6490
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.c	
@@ -0,0 +1,269 @@
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/upb.h"
+#else
+  #include  "upb/upb.h"
+#endif
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+/* Guarantee null-termination and provide ellipsis truncation.
+ * It may be tempting to "optimize" this by initializing these final
+ * four bytes up-front and then being careful never to overwrite them,
+ * this is safer and simpler. */
+static void nullz(upb_status *status) {
+  const char *ellipsis = "...";
+  size_t len = strlen(ellipsis);
+  UPB_ASSERT(sizeof(status->msg) > len);
+  memcpy(status->msg + sizeof(status->msg) - len, ellipsis, len);
+}
+
+/* upb_status *****************************************************************/
+
+void upb_status_clear(upb_status *status) {
+  if (!status) return;
+  status->ok = true;
+  status->msg[0] = '\0';
+}
+
+bool upb_ok(const upb_status *status) { return status->ok; }
+
+const char *upb_status_errmsg(const upb_status *status) { return status->msg; }
+
+void upb_status_seterrmsg(upb_status *status, const char *msg) {
+  if (!status) return;
+  status->ok = false;
+  strncpy(status->msg, msg, sizeof(status->msg));
+  nullz(status);
+}
+
+void upb_status_seterrf(upb_status *status, const char *fmt, ...) {
+  va_list args;
+  va_start(args, fmt);
+  upb_status_vseterrf(status, fmt, args);
+  va_end(args);
+}
+
+void upb_status_vseterrf(upb_status *status, const char *fmt, va_list args) {
+  if (!status) return;
+  status->ok = false;
+  _upb_vsnprintf(status->msg, sizeof(status->msg), fmt, args);
+  nullz(status);
+}
+
+/* upb_alloc ******************************************************************/
+
+static void *upb_global_allocfunc(upb_alloc *alloc, void *ptr, size_t oldsize,
+                                  size_t size) {
+  UPB_UNUSED(alloc);
+  UPB_UNUSED(oldsize);
+  if (size == 0) {
+    free(ptr);
+    return NULL;
+  } else {
+    return realloc(ptr, size);
+  }
+}
+
+upb_alloc upb_alloc_global = {&upb_global_allocfunc};
+
+/* upb_arena ******************************************************************/
+
+/* Be conservative and choose 16 in case anyone is using SSE. */
+static const size_t maxalign = 16;
+
+static size_t align_up_max(size_t size) {
+  return ((size + maxalign - 1) / maxalign) * maxalign;
+}
+
+struct upb_arena {
+  /* We implement the allocator interface.
+   * This must be the first member of upb_arena! */
+  upb_alloc alloc;
+
+  /* Allocator to allocate arena blocks.  We are responsible for freeing these
+   * when we are destroyed. */
+  upb_alloc *block_alloc;
+
+  size_t bytes_allocated;
+  size_t next_block_size;
+  size_t max_block_size;
+
+  /* Linked list of blocks.  Points to an arena_block, defined in env.c */
+  void *block_head;
+
+  /* Cleanup entries.  Pointer to a cleanup_ent, defined in env.c */
+  void *cleanup_head;
+};
+
+typedef struct mem_block {
+  struct mem_block *next;
+  size_t size;
+  size_t used;
+  bool owned;
+  /* Data follows. */
+} mem_block;
+
+typedef struct cleanup_ent {
+  struct cleanup_ent *next;
+  upb_cleanup_func *cleanup;
+  void *ud;
+} cleanup_ent;
+
+static void upb_arena_addblock(upb_arena *a, void *ptr, size_t size,
+                               bool owned) {
+  mem_block *block = ptr;
+
+  block->next = a->block_head;
+  block->size = size;
+  block->used = align_up_max(sizeof(mem_block));
+  block->owned = owned;
+
+  a->block_head = block;
+
+  /* TODO(haberman): ASAN poison. */
+}
+
+static mem_block *upb_arena_allocblock(upb_arena *a, size_t size) {
+  size_t block_size = UPB_MAX(size, a->next_block_size) + sizeof(mem_block);
+  mem_block *block = upb_malloc(a->block_alloc, block_size);
+
+  if (!block) {
+    return NULL;
+  }
+
+  upb_arena_addblock(a, block, block_size, true);
+  a->next_block_size = UPB_MIN(block_size * 2, a->max_block_size);
+
+  return block;
+}
+
+static void *upb_arena_doalloc(upb_alloc *alloc, void *ptr, size_t oldsize,
+                               size_t size) {
+  upb_arena *a = (upb_arena*)alloc;  /* upb_alloc is initial member. */
+  mem_block *block = a->block_head;
+  void *ret;
+
+  if (size == 0) {
+    return NULL;  /* We are an arena, don't need individual frees. */
+  }
+
+  size = align_up_max(size);
+
+  /* TODO(haberman): special-case if this is a realloc of the last alloc? */
+
+  if (!block || block->size - block->used < size) {
+    /* Slow path: have to allocate a new block. */
+    block = upb_arena_allocblock(a, size);
+
+    if (!block) {
+      return NULL;  /* Out of memory. */
+    }
+  }
+
+  ret = (char*)block + block->used;
+  block->used += size;
+
+  if (oldsize > 0) {
+    memcpy(ret, ptr, oldsize);  /* Preserve existing data. */
+  }
+
+  /* TODO(haberman): ASAN unpoison. */
+
+  a->bytes_allocated += size;
+  return ret;
+}
+
+/* Public Arena API ***********************************************************/
+
+#define upb_alignof(type) offsetof (struct { char c; type member; }, member)
+
+upb_arena *upb_arena_init(void *mem, size_t n, upb_alloc *alloc) {
+  const size_t first_block_overhead = sizeof(upb_arena) + sizeof(mem_block);
+  upb_arena *a;
+  bool owned = false;
+
+  /* Round block size down to alignof(*a) since we will allocate the arena
+   * itself at the end. */
+  n &= ~(upb_alignof(upb_arena) - 1);
+
+  if (n < first_block_overhead) {
+    /* We need to malloc the initial block. */
+    n = first_block_overhead + 256;
+    owned = true;
+    if (!alloc || !(mem = upb_malloc(alloc, n))) {
+      return NULL;
+    }
+  }
+
+  a = (void*)((char*)mem + n - sizeof(*a));
+  n -= sizeof(*a);
+
+  a->alloc.func = &upb_arena_doalloc;
+  a->block_alloc = &upb_alloc_global;
+  a->bytes_allocated = 0;
+  a->next_block_size = 256;
+  a->max_block_size = 16384;
+  a->cleanup_head = NULL;
+  a->block_head = NULL;
+  a->block_alloc = alloc;
+
+  upb_arena_addblock(a, mem, n, owned);
+
+  return a;
+}
+
+#undef upb_alignof
+
+void upb_arena_free(upb_arena *a) {
+  cleanup_ent *ent = a->cleanup_head;
+  mem_block *block = a->block_head;
+
+  while (ent) {
+    ent->cleanup(ent->ud);
+    ent = ent->next;
+  }
+
+  /* Must do this after running cleanup functions, because this will delete
+   * the memory we store our cleanup entries in! */
+  while (block) {
+    /* Load first since we are deleting block. */
+    mem_block *next = block->next;
+
+    if (block->owned) {
+      upb_free(a->block_alloc, block);
+    }
+
+    block = next;
+  }
+}
+
+bool upb_arena_addcleanup(upb_arena *a, void *ud, upb_cleanup_func *func) {
+  cleanup_ent *ent = upb_malloc(&a->alloc, sizeof(cleanup_ent));
+  if (!ent) {
+    return false;  /* Out of memory. */
+  }
+
+  ent->cleanup = func;
+  ent->ud = ud;
+  ent->next = a->cleanup_head;
+  a->cleanup_head = ent;
+
+  return true;
+}
+
+size_t upb_arena_bytesallocated(const upb_arena *a) {
+  return a->bytes_allocated;
+}
diff --git a/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.h b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.h
new file mode 100644
index 0000000..8117f14
--- /dev/null
+++ b/ChattingApp 000/Pods/gRPC-Core/third_party/upb/upb/upb.h	
@@ -0,0 +1,372 @@
+/*
+** This file contains shared definitions that are widely used across upb.
+**
+** This is a mixed C/C++ interface that offers a full API to both languages.
+** See the top-level README for more information.
+*/
+
+#ifndef UPB_H_
+#define UPB_H_
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+#include <memory>
+namespace upb {
+class Arena;
+class Status;
+template <int N> class InlinedArena;
+}
+#endif
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_def.inc"
+#else
+  #include  "upb/port_def.inc"
+#endif
+
+/* upb_status *****************************************************************/
+
+/* upb_status represents a success or failure status and error message.
+ * It owns no resources and allocates no memory, so it should work
+ * even in OOM situations. */
+
+/* The maximum length of an error message before it will get truncated. */
+#define UPB_STATUS_MAX_MESSAGE 127
+
+typedef struct {
+  bool ok;
+  char msg[UPB_STATUS_MAX_MESSAGE];  /* Error message; NULL-terminated. */
+} upb_status;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const char *upb_status_errmsg(const upb_status *status);
+bool upb_ok(const upb_status *status);
+
+/* Any of the functions that write to a status object allow status to be NULL,
+ * to support use cases where the function's caller does not care about the
+ * status message. */
+void upb_status_clear(upb_status *status);
+void upb_status_seterrmsg(upb_status *status, const char *msg);
+void upb_status_seterrf(upb_status *status, const char *fmt, ...);
+void upb_status_vseterrf(upb_status *status, const char *fmt, va_list args);
+
+UPB_INLINE void upb_status_setoom(upb_status *status) {
+  upb_status_seterrmsg(status, "out of memory");
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+
+class upb::Status {
+ public:
+  Status() { upb_status_clear(&status_); }
+
+  upb_status* ptr() { return &status_; }
+
+  /* Returns true if there is no error. */
+  bool ok() const { return upb_ok(&status_); }
+
+  /* Guaranteed to be NULL-terminated. */
+  const char *error_message() const { return upb_status_errmsg(&status_); }
+
+  /* The error message will be truncated if it is longer than
+   * UPB_STATUS_MAX_MESSAGE-4. */
+  void SetErrorMessage(const char *msg) { upb_status_seterrmsg(&status_, msg); }
+  void SetFormattedErrorMessage(const char *fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+    upb_status_vseterrf(&status_, fmt, args);
+    va_end(args);
+  }
+
+  /* Resets the status to a successful state with no message. */
+  void Clear() { upb_status_clear(&status_); }
+
+ private:
+  upb_status status_;
+};
+
+#endif  /* __cplusplus */
+
+/** upb_strview ************************************************************/
+
+typedef struct {
+  const char *data;
+  size_t size;
+} upb_strview;
+
+UPB_INLINE upb_strview upb_strview_make(const char *data, size_t size) {
+  upb_strview ret;
+  ret.data = data;
+  ret.size = size;
+  return ret;
+}
+
+UPB_INLINE upb_strview upb_strview_makez(const char *data) {
+  return upb_strview_make(data, strlen(data));
+}
+
+UPB_INLINE bool upb_strview_eql(upb_strview a, upb_strview b) {
+  return a.size == b.size && memcmp(a.data, b.data, a.size) == 0;
+}
+
+#define UPB_STRVIEW_INIT(ptr, len) {ptr, len}
+
+#define UPB_STRVIEW_FORMAT "%.*s"
+#define UPB_STRVIEW_ARGS(view) (int)(view).size, (view).data
+
+/** upb_alloc *****************************************************************/
+
+/* A upb_alloc is a possibly-stateful allocator object.
+ *
+ * It could either be an arena allocator (which doesn't require individual
+ * free() calls) or a regular malloc() (which does).  The client must therefore
+ * free memory unless it knows that the allocator is an arena allocator. */
+
+struct upb_alloc;
+typedef struct upb_alloc upb_alloc;
+
+/* A malloc()/free() function.
+ * If "size" is 0 then the function acts like free(), otherwise it acts like
+ * realloc().  Only "oldsize" bytes from a previous allocation are preserved. */
+typedef void *upb_alloc_func(upb_alloc *alloc, void *ptr, size_t oldsize,
+                             size_t size);
+
+struct upb_alloc {
+  upb_alloc_func *func;
+};
+
+UPB_INLINE void *upb_malloc(upb_alloc *alloc, size_t size) {
+  UPB_ASSERT(alloc);
+  return alloc->func(alloc, NULL, 0, size);
+}
+
+UPB_INLINE void *upb_realloc(upb_alloc *alloc, void *ptr, size_t oldsize,
+                             size_t size) {
+  UPB_ASSERT(alloc);
+  return alloc->func(alloc, ptr, oldsize, size);
+}
+
+UPB_INLINE void upb_free(upb_alloc *alloc, void *ptr) {
+  assert(alloc);
+  alloc->func(alloc, ptr, 0, 0);
+}
+
+/* The global allocator used by upb.  Uses the standard malloc()/free(). */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern upb_alloc upb_alloc_global;
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+/* Functions that hard-code the global malloc.
+ *
+ * We still get benefit because we can put custom logic into our global
+ * allocator, like injecting out-of-memory faults in debug/testing builds. */
+
+UPB_INLINE void *upb_gmalloc(size_t size) {
+  return upb_malloc(&upb_alloc_global, size);
+}
+
+UPB_INLINE void *upb_grealloc(void *ptr, size_t oldsize, size_t size) {
+  return upb_realloc(&upb_alloc_global, ptr, oldsize, size);
+}
+
+UPB_INLINE void upb_gfree(void *ptr) {
+  upb_free(&upb_alloc_global, ptr);
+}
+
+/* upb_arena ******************************************************************/
+
+/* upb_arena is a specific allocator implementation that uses arena allocation.
+ * The user provides an allocator that will be used to allocate the underlying
+ * arena blocks.  Arenas by nature do not require the individual allocations
+ * to be freed.  However the Arena does allow users to register cleanup
+ * functions that will run when the arena is destroyed.
+ *
+ * A upb_arena is *not* thread-safe.
+ *
+ * You could write a thread-safe arena allocator that satisfies the
+ * upb_alloc interface, but it would not be as efficient for the
+ * single-threaded case. */
+
+typedef void upb_cleanup_func(void *ud);
+
+struct upb_arena;
+typedef struct upb_arena upb_arena;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Creates an arena from the given initial block (if any -- n may be 0).
+ * Additional blocks will be allocated from |alloc|.  If |alloc| is NULL, this
+ * is a fixed-size arena and cannot grow. */
+upb_arena *upb_arena_init(void *mem, size_t n, upb_alloc *alloc);
+void upb_arena_free(upb_arena *a);
+bool upb_arena_addcleanup(upb_arena *a, void *ud, upb_cleanup_func *func);
+size_t upb_arena_bytesallocated(const upb_arena *a);
+
+UPB_INLINE upb_alloc *upb_arena_alloc(upb_arena *a) { return (upb_alloc*)a; }
+
+/* Convenience wrappers around upb_alloc functions. */
+
+UPB_INLINE void *upb_arena_malloc(upb_arena *a, size_t size) {
+  return upb_malloc(upb_arena_alloc(a), size);
+}
+
+UPB_INLINE void *upb_arena_realloc(upb_arena *a, void *ptr, size_t oldsize,
+                                   size_t size) {
+  return upb_realloc(upb_arena_alloc(a), ptr, oldsize, size);
+}
+
+UPB_INLINE upb_arena *upb_arena_new(void) {
+  return upb_arena_init(NULL, 0, &upb_alloc_global);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+
+class upb::Arena {
+ public:
+  /* A simple arena with no initial memory block and the default allocator. */
+  Arena() : ptr_(upb_arena_new(), upb_arena_free) {}
+
+  upb_arena* ptr() { return ptr_.get(); }
+
+  /* Allows this arena to be used as a generic allocator.
+   *
+   * The arena does not need free() calls so when using Arena as an allocator
+   * it is safe to skip them.  However they are no-ops so there is no harm in
+   * calling free() either. */
+  upb_alloc *allocator() { return upb_arena_alloc(ptr_.get()); }
+
+  /* Add a cleanup function to run when the arena is destroyed.
+   * Returns false on out-of-memory. */
+  bool AddCleanup(void *ud, upb_cleanup_func* func) {
+    return upb_arena_addcleanup(ptr_.get(), ud, func);
+  }
+
+  /* Total number of bytes that have been allocated.  It is undefined what
+   * Realloc() does to &arena_ counter. */
+  size_t BytesAllocated() const { return upb_arena_bytesallocated(ptr_.get()); }
+
+ private:
+  std::unique_ptr<upb_arena, decltype(&upb_arena_free)> ptr_;
+};
+
+#endif
+
+/* upb::InlinedArena **********************************************************/
+
+/* upb::InlinedArena seeds the arenas with a predefined amount of memory.  No
+ * heap memory will be allocated until the initial block is exceeded.
+ *
+ * These types only exist in C++ */
+
+#ifdef __cplusplus
+
+template <int N> class upb::InlinedArena : public upb::Arena {
+ public:
+  InlinedArena() : ptr_(upb_arena_new(&initial_block_, N, &upb_alloc_global)) {}
+
+  upb_arena* ptr() { return ptr_.get(); }
+
+ private:
+  InlinedArena(const InlinedArena*) = delete;
+  InlinedArena& operator=(const InlinedArena*) = delete;
+
+  std::unique_ptr<upb_arena, decltype(&upb_arena_free)> ptr_;
+  char initial_block_[N];
+};
+
+#endif  /* __cplusplus */
+
+/* Constants ******************************************************************/
+
+/* Generic function type. */
+typedef void upb_func(void);
+
+/* A list of types as they are encoded on-the-wire. */
+typedef enum {
+  UPB_WIRE_TYPE_VARINT      = 0,
+  UPB_WIRE_TYPE_64BIT       = 1,
+  UPB_WIRE_TYPE_DELIMITED   = 2,
+  UPB_WIRE_TYPE_START_GROUP = 3,
+  UPB_WIRE_TYPE_END_GROUP   = 4,
+  UPB_WIRE_TYPE_32BIT       = 5
+} upb_wiretype_t;
+
+/* The types a field can have.  Note that this list is not identical to the
+ * types defined in descriptor.proto, which gives INT32 and SINT32 separate
+ * types (we distinguish the two with the "integer encoding" enum below). */
+typedef enum {
+  /* Types stored in 1 byte. */
+  UPB_TYPE_BOOL     = 1,
+  /* Types stored in 4 bytes. */
+  UPB_TYPE_FLOAT    = 2,
+  UPB_TYPE_INT32    = 3,
+  UPB_TYPE_UINT32   = 4,
+  UPB_TYPE_ENUM     = 5,  /* Enum values are int32. */
+  /* Types stored as pointers (probably 4 or 8 bytes). */
+  UPB_TYPE_STRING   = 6,
+  UPB_TYPE_BYTES    = 7,
+  UPB_TYPE_MESSAGE  = 8,
+  /* Types stored as 8 bytes. */
+  UPB_TYPE_DOUBLE   = 9,
+  UPB_TYPE_INT64    = 10,
+  UPB_TYPE_UINT64   = 11
+} upb_fieldtype_t;
+
+/* The repeated-ness of each field; this matches descriptor.proto. */
+typedef enum {
+  UPB_LABEL_OPTIONAL = 1,
+  UPB_LABEL_REQUIRED = 2,
+  UPB_LABEL_REPEATED = 3
+} upb_label_t;
+
+/* Descriptor types, as defined in descriptor.proto. */
+typedef enum {
+  UPB_DESCRIPTOR_TYPE_DOUBLE   = 1,
+  UPB_DESCRIPTOR_TYPE_FLOAT    = 2,
+  UPB_DESCRIPTOR_TYPE_INT64    = 3,
+  UPB_DESCRIPTOR_TYPE_UINT64   = 4,
+  UPB_DESCRIPTOR_TYPE_INT32    = 5,
+  UPB_DESCRIPTOR_TYPE_FIXED64  = 6,
+  UPB_DESCRIPTOR_TYPE_FIXED32  = 7,
+  UPB_DESCRIPTOR_TYPE_BOOL     = 8,
+  UPB_DESCRIPTOR_TYPE_STRING   = 9,
+  UPB_DESCRIPTOR_TYPE_GROUP    = 10,
+  UPB_DESCRIPTOR_TYPE_MESSAGE  = 11,
+  UPB_DESCRIPTOR_TYPE_BYTES    = 12,
+  UPB_DESCRIPTOR_TYPE_UINT32   = 13,
+  UPB_DESCRIPTOR_TYPE_ENUM     = 14,
+  UPB_DESCRIPTOR_TYPE_SFIXED32 = 15,
+  UPB_DESCRIPTOR_TYPE_SFIXED64 = 16,
+  UPB_DESCRIPTOR_TYPE_SINT32   = 17,
+  UPB_DESCRIPTOR_TYPE_SINT64   = 18
+} upb_descriptortype_t;
+
+extern const uint8_t upb_desctype_to_fieldtype[];
+
+#if COCOAPODS==1
+  #include  "third_party/upb/upb/port_undef.inc"
+#else
+  #include  "upb/port_undef.inc"
+#endif
+
+#endif  /* UPB_H_ */
diff --git a/ChattingApp 000/Pods/leveldb-library/LICENSE b/ChattingApp 000/Pods/leveldb-library/LICENSE
new file mode 100644
index 0000000..8e80208
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/LICENSE	
@@ -0,0 +1,27 @@
+Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/ChattingApp 000/Pods/leveldb-library/README.md b/ChattingApp 000/Pods/leveldb-library/README.md
new file mode 100644
index 0000000..0b660ae
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/README.md	
@@ -0,0 +1,225 @@
+**LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.**
+
+[![Build Status](https://travis-ci.org/google/leveldb.svg?branch=master)](https://travis-ci.org/google/leveldb)
+[![Build status](https://ci.appveyor.com/api/projects/status/g2j5j4rfkda6eyw5/branch/master?svg=true)](https://ci.appveyor.com/project/pwnall/leveldb)
+
+Authors: Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
+
+# Features
+
+  * Keys and values are arbitrary byte arrays.
+  * Data is stored sorted by key.
+  * Callers can provide a custom comparison function to override the sort order.
+  * The basic operations are `Put(key,value)`, `Get(key)`, `Delete(key)`.
+  * Multiple changes can be made in one atomic batch.
+  * Users can create a transient snapshot to get a consistent view of data.
+  * Forward and backward iteration is supported over the data.
+  * Data is automatically compressed using the [Snappy compression library](http://google.github.io/snappy/).
+  * External activity (file system operations etc.) is relayed through a virtual interface so users can customize the operating system interactions.
+
+# Documentation
+
+  [LevelDB library documentation](https://github.com/google/leveldb/blob/master/doc/index.md) is online and bundled with the source code.
+
+# Limitations
+
+  * This is not a SQL database.  It does not have a relational data model, it does not support SQL queries, and it has no support for indexes.
+  * Only a single process (possibly multi-threaded) can access a particular database at a time.
+  * There is no client-server support builtin to the library.  An application that needs such support will have to wrap their own server around the library.
+
+# Building
+
+This project supports [CMake](https://cmake.org/) out of the box.
+
+### Build for POSIX
+
+Quick start:
+
+```bash
+mkdir -p build && cd build
+cmake -DCMAKE_BUILD_TYPE=Release .. && cmake --build .
+```
+
+### Building for Windows
+
+First generate the Visual Studio 2017 project/solution files:
+
+```cmd
+mkdir build
+cd build
+cmake -G "Visual Studio 15" ..
+```
+The default default will build for x86. For 64-bit run:
+
+```cmd
+cmake -G "Visual Studio 15 Win64" ..
+```
+
+To compile the Windows solution from the command-line:
+
+```cmd
+devenv /build Debug leveldb.sln
+```
+
+or open leveldb.sln in Visual Studio and build from within.
+
+Please see the CMake documentation and `CMakeLists.txt` for more advanced usage.
+
+# Contributing to the leveldb Project
+
+The leveldb project welcomes contributions. leveldb's primary goal is to be
+a reliable and fast key/value store. Changes that are in line with the
+features/limitations outlined above, and meet the requirements below,
+will be considered.
+
+Contribution requirements:
+
+1. **Tested platforms only**. We _generally_ will only accept changes for
+   platforms that are compiled and tested. This means POSIX (for Linux and
+   macOS) or Windows. Very small changes will sometimes be accepted, but
+   consider that more of an exception than the rule.
+
+2. **Stable API**. We strive very hard to maintain a stable API. Changes that
+   require changes for projects using leveldb _might_ be rejected without
+   sufficient benefit to the project.
+
+3. **Tests**: All changes must be accompanied by a new (or changed) test, or
+   a sufficient explanation as to why a new (or changed) test is not required.
+
+4. **Consistent Style**: This project conforms to the
+   [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html).
+   To ensure your changes are properly formatted please run:
+
+   ```
+   clang-format -i --style=file <file>
+   ```
+
+## Submitting a Pull Request
+
+Before any pull request will be accepted the author must first sign a
+Contributor License Agreement (CLA) at https://cla.developers.google.com/.
+
+In order to keep the commit timeline linear
+[squash](https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History#Squashing-Commits)
+your changes down to a single commit and [rebase](https://git-scm.com/docs/git-rebase)
+on google/leveldb/master. This keeps the commit timeline linear and more easily sync'ed
+with the internal repository at Google. More information at GitHub's
+[About Git rebase](https://help.github.com/articles/about-git-rebase/) page.
+
+# Performance
+
+Here is a performance report (with explanations) from the run of the
+included db_bench program.  The results are somewhat noisy, but should
+be enough to get a ballpark performance estimate.
+
+## Setup
+
+We use a database with a million entries.  Each entry has a 16 byte
+key, and a 100 byte value.  Values used by the benchmark compress to
+about half their original size.
+
+    LevelDB:    version 1.1
+    Date:       Sun May  1 12:11:26 2011
+    CPU:        4 x Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
+    CPUCache:   4096 KB
+    Keys:       16 bytes each
+    Values:     100 bytes each (50 bytes after compression)
+    Entries:    1000000
+    Raw Size:   110.6 MB (estimated)
+    File Size:  62.9 MB (estimated)
+
+## Write performance
+
+The "fill" benchmarks create a brand new database, in either
+sequential, or random order.  The "fillsync" benchmark flushes data
+from the operating system to the disk after every operation; the other
+write operations leave the data sitting in the operating system buffer
+cache for a while.  The "overwrite" benchmark does random writes that
+update existing keys in the database.
+
+    fillseq      :       1.765 micros/op;   62.7 MB/s
+    fillsync     :     268.409 micros/op;    0.4 MB/s (10000 ops)
+    fillrandom   :       2.460 micros/op;   45.0 MB/s
+    overwrite    :       2.380 micros/op;   46.5 MB/s
+
+Each "op" above corresponds to a write of a single key/value pair.
+I.e., a random write benchmark goes at approximately 400,000 writes per second.
+
+Each "fillsync" operation costs much less (0.3 millisecond)
+than a disk seek (typically 10 milliseconds).  We suspect that this is
+because the hard disk itself is buffering the update in its memory and
+responding before the data has been written to the platter.  This may
+or may not be safe based on whether or not the hard disk has enough
+power to save its memory in the event of a power failure.
+
+## Read performance
+
+We list the performance of reading sequentially in both the forward
+and reverse direction, and also the performance of a random lookup.
+Note that the database created by the benchmark is quite small.
+Therefore the report characterizes the performance of leveldb when the
+working set fits in memory.  The cost of reading a piece of data that
+is not present in the operating system buffer cache will be dominated
+by the one or two disk seeks needed to fetch the data from disk.
+Write performance will be mostly unaffected by whether or not the
+working set fits in memory.
+
+    readrandom  : 16.677 micros/op;  (approximately 60,000 reads per second)
+    readseq     :  0.476 micros/op;  232.3 MB/s
+    readreverse :  0.724 micros/op;  152.9 MB/s
+
+LevelDB compacts its underlying storage data in the background to
+improve read performance.  The results listed above were done
+immediately after a lot of random writes.  The results after
+compactions (which are usually triggered automatically) are better.
+
+    readrandom  : 11.602 micros/op;  (approximately 85,000 reads per second)
+    readseq     :  0.423 micros/op;  261.8 MB/s
+    readreverse :  0.663 micros/op;  166.9 MB/s
+
+Some of the high cost of reads comes from repeated decompression of blocks
+read from disk.  If we supply enough cache to the leveldb so it can hold the
+uncompressed blocks in memory, the read performance improves again:
+
+    readrandom  : 9.775 micros/op;  (approximately 100,000 reads per second before compaction)
+    readrandom  : 5.215 micros/op;  (approximately 190,000 reads per second after compaction)
+
+## Repository contents
+
+See [doc/index.md](doc/index.md) for more explanation. See
+[doc/impl.md](doc/impl.md) for a brief overview of the implementation.
+
+The public interface is in include/*.h.  Callers should not include or
+rely on the details of any other header files in this package.  Those
+internal APIs may be changed without warning.
+
+Guide to header files:
+
+* **include/db.h**: Main interface to the DB: Start here
+
+* **include/options.h**: Control over the behavior of an entire database,
+and also control over the behavior of individual reads and writes.
+
+* **include/comparator.h**: Abstraction for user-specified comparison function.
+If you want just bytewise comparison of keys, you can use the default
+comparator, but clients can write their own comparator implementations if they
+want custom ordering (e.g. to handle different character encodings, etc.)
+
+* **include/iterator.h**: Interface for iterating over data. You can get
+an iterator from a DB object.
+
+* **include/write_batch.h**: Interface for atomically applying multiple
+updates to a database.
+
+* **include/slice.h**: A simple module for maintaining a pointer and a
+length into some other byte array.
+
+* **include/status.h**: Status is returned from many of the public interfaces
+and is used to report success and various kinds of errors.
+
+* **include/env.h**:
+Abstraction of the OS environment.  A posix implementation of this interface is
+in util/env_posix.cc
+
+* **include/table.h, include/table_builder.h**: Lower-level modules that most
+clients probably won't use directly
diff --git a/ChattingApp 000/Pods/leveldb-library/db/builder.cc b/ChattingApp 000/Pods/leveldb-library/db/builder.cc
new file mode 100644
index 0000000..9520ee4
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/builder.cc	
@@ -0,0 +1,79 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/builder.h"
+
+#include "db/dbformat.h"
+#include "db/filename.h"
+#include "db/table_cache.h"
+#include "db/version_edit.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+#include "leveldb/iterator.h"
+
+namespace leveldb {
+
+Status BuildTable(const std::string& dbname, Env* env, const Options& options,
+                  TableCache* table_cache, Iterator* iter, FileMetaData* meta) {
+  Status s;
+  meta->file_size = 0;
+  iter->SeekToFirst();
+
+  std::string fname = TableFileName(dbname, meta->number);
+  if (iter->Valid()) {
+    WritableFile* file;
+    s = env->NewWritableFile(fname, &file);
+    if (!s.ok()) {
+      return s;
+    }
+
+    TableBuilder* builder = new TableBuilder(options, file);
+    meta->smallest.DecodeFrom(iter->key());
+    for (; iter->Valid(); iter->Next()) {
+      Slice key = iter->key();
+      meta->largest.DecodeFrom(key);
+      builder->Add(key, iter->value());
+    }
+
+    // Finish and check for builder errors
+    s = builder->Finish();
+    if (s.ok()) {
+      meta->file_size = builder->FileSize();
+      assert(meta->file_size > 0);
+    }
+    delete builder;
+
+    // Finish and check for file errors
+    if (s.ok()) {
+      s = file->Sync();
+    }
+    if (s.ok()) {
+      s = file->Close();
+    }
+    delete file;
+    file = nullptr;
+
+    if (s.ok()) {
+      // Verify that the table is usable
+      Iterator* it = table_cache->NewIterator(ReadOptions(), meta->number,
+                                              meta->file_size);
+      s = it->status();
+      delete it;
+    }
+  }
+
+  // Check for input iterator errors
+  if (!iter->status().ok()) {
+    s = iter->status();
+  }
+
+  if (s.ok() && meta->file_size > 0) {
+    // Keep it
+  } else {
+    env->DeleteFile(fname);
+  }
+  return s;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/builder.h b/ChattingApp 000/Pods/leveldb-library/db/builder.h
new file mode 100644
index 0000000..7bd0b80
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/builder.h	
@@ -0,0 +1,30 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_BUILDER_H_
+#define STORAGE_LEVELDB_DB_BUILDER_H_
+
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+struct Options;
+struct FileMetaData;
+
+class Env;
+class Iterator;
+class TableCache;
+class VersionEdit;
+
+// Build a Table file from the contents of *iter.  The generated file
+// will be named according to meta->number.  On success, the rest of
+// *meta will be filled with metadata about the generated table.
+// If no data is present in *iter, meta->file_size will be set to
+// zero, and no Table file will be produced.
+Status BuildTable(const std::string& dbname, Env* env, const Options& options,
+                  TableCache* table_cache, Iterator* iter, FileMetaData* meta);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_BUILDER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/c.cc b/ChattingApp 000/Pods/leveldb-library/db/c.cc
new file mode 100644
index 0000000..e0f3367
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/c.cc	
@@ -0,0 +1,566 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/c.h"
+
+#include <stdlib.h>
+
+#include "leveldb/cache.h"
+#include "leveldb/comparator.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+#include "leveldb/filter_policy.h"
+#include "leveldb/iterator.h"
+#include "leveldb/options.h"
+#include "leveldb/status.h"
+#include "leveldb/write_batch.h"
+
+using leveldb::Cache;
+using leveldb::Comparator;
+using leveldb::CompressionType;
+using leveldb::DB;
+using leveldb::Env;
+using leveldb::FileLock;
+using leveldb::FilterPolicy;
+using leveldb::Iterator;
+using leveldb::kMajorVersion;
+using leveldb::kMinorVersion;
+using leveldb::Logger;
+using leveldb::NewBloomFilterPolicy;
+using leveldb::NewLRUCache;
+using leveldb::Options;
+using leveldb::RandomAccessFile;
+using leveldb::Range;
+using leveldb::ReadOptions;
+using leveldb::SequentialFile;
+using leveldb::Slice;
+using leveldb::Snapshot;
+using leveldb::Status;
+using leveldb::WritableFile;
+using leveldb::WriteBatch;
+using leveldb::WriteOptions;
+
+extern "C" {
+
+struct leveldb_t {
+  DB* rep;
+};
+struct leveldb_iterator_t {
+  Iterator* rep;
+};
+struct leveldb_writebatch_t {
+  WriteBatch rep;
+};
+struct leveldb_snapshot_t {
+  const Snapshot* rep;
+};
+struct leveldb_readoptions_t {
+  ReadOptions rep;
+};
+struct leveldb_writeoptions_t {
+  WriteOptions rep;
+};
+struct leveldb_options_t {
+  Options rep;
+};
+struct leveldb_cache_t {
+  Cache* rep;
+};
+struct leveldb_seqfile_t {
+  SequentialFile* rep;
+};
+struct leveldb_randomfile_t {
+  RandomAccessFile* rep;
+};
+struct leveldb_writablefile_t {
+  WritableFile* rep;
+};
+struct leveldb_logger_t {
+  Logger* rep;
+};
+struct leveldb_filelock_t {
+  FileLock* rep;
+};
+
+struct leveldb_comparator_t : public Comparator {
+  virtual ~leveldb_comparator_t() { (*destructor_)(state_); }
+
+  virtual int Compare(const Slice& a, const Slice& b) const {
+    return (*compare_)(state_, a.data(), a.size(), b.data(), b.size());
+  }
+
+  virtual const char* Name() const { return (*name_)(state_); }
+
+  // No-ops since the C binding does not support key shortening methods.
+  virtual void FindShortestSeparator(std::string*, const Slice&) const {}
+  virtual void FindShortSuccessor(std::string* key) const {}
+
+  void* state_;
+  void (*destructor_)(void*);
+  int (*compare_)(void*, const char* a, size_t alen, const char* b,
+                  size_t blen);
+  const char* (*name_)(void*);
+};
+
+struct leveldb_filterpolicy_t : public FilterPolicy {
+  virtual ~leveldb_filterpolicy_t() { (*destructor_)(state_); }
+
+  virtual const char* Name() const { return (*name_)(state_); }
+
+  virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const {
+    std::vector<const char*> key_pointers(n);
+    std::vector<size_t> key_sizes(n);
+    for (int i = 0; i < n; i++) {
+      key_pointers[i] = keys[i].data();
+      key_sizes[i] = keys[i].size();
+    }
+    size_t len;
+    char* filter = (*create_)(state_, &key_pointers[0], &key_sizes[0], n, &len);
+    dst->append(filter, len);
+    free(filter);
+  }
+
+  virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const {
+    return (*key_match_)(state_, key.data(), key.size(), filter.data(),
+                         filter.size());
+  }
+
+  void* state_;
+  void (*destructor_)(void*);
+  const char* (*name_)(void*);
+  char* (*create_)(void*, const char* const* key_array,
+                   const size_t* key_length_array, int num_keys,
+                   size_t* filter_length);
+  unsigned char (*key_match_)(void*, const char* key, size_t length,
+                              const char* filter, size_t filter_length);
+};
+
+struct leveldb_env_t {
+  Env* rep;
+  bool is_default;
+};
+
+static bool SaveError(char** errptr, const Status& s) {
+  assert(errptr != nullptr);
+  if (s.ok()) {
+    return false;
+  } else if (*errptr == nullptr) {
+    *errptr = strdup(s.ToString().c_str());
+  } else {
+    // TODO(sanjay): Merge with existing error?
+    free(*errptr);
+    *errptr = strdup(s.ToString().c_str());
+  }
+  return true;
+}
+
+static char* CopyString(const std::string& str) {
+  char* result = reinterpret_cast<char*>(malloc(sizeof(char) * str.size()));
+  memcpy(result, str.data(), sizeof(char) * str.size());
+  return result;
+}
+
+leveldb_t* leveldb_open(const leveldb_options_t* options, const char* name,
+                        char** errptr) {
+  DB* db;
+  if (SaveError(errptr, DB::Open(options->rep, std::string(name), &db))) {
+    return nullptr;
+  }
+  leveldb_t* result = new leveldb_t;
+  result->rep = db;
+  return result;
+}
+
+void leveldb_close(leveldb_t* db) {
+  delete db->rep;
+  delete db;
+}
+
+void leveldb_put(leveldb_t* db, const leveldb_writeoptions_t* options,
+                 const char* key, size_t keylen, const char* val, size_t vallen,
+                 char** errptr) {
+  SaveError(errptr,
+            db->rep->Put(options->rep, Slice(key, keylen), Slice(val, vallen)));
+}
+
+void leveldb_delete(leveldb_t* db, const leveldb_writeoptions_t* options,
+                    const char* key, size_t keylen, char** errptr) {
+  SaveError(errptr, db->rep->Delete(options->rep, Slice(key, keylen)));
+}
+
+void leveldb_write(leveldb_t* db, const leveldb_writeoptions_t* options,
+                   leveldb_writebatch_t* batch, char** errptr) {
+  SaveError(errptr, db->rep->Write(options->rep, &batch->rep));
+}
+
+char* leveldb_get(leveldb_t* db, const leveldb_readoptions_t* options,
+                  const char* key, size_t keylen, size_t* vallen,
+                  char** errptr) {
+  char* result = nullptr;
+  std::string tmp;
+  Status s = db->rep->Get(options->rep, Slice(key, keylen), &tmp);
+  if (s.ok()) {
+    *vallen = tmp.size();
+    result = CopyString(tmp);
+  } else {
+    *vallen = 0;
+    if (!s.IsNotFound()) {
+      SaveError(errptr, s);
+    }
+  }
+  return result;
+}
+
+leveldb_iterator_t* leveldb_create_iterator(
+    leveldb_t* db, const leveldb_readoptions_t* options) {
+  leveldb_iterator_t* result = new leveldb_iterator_t;
+  result->rep = db->rep->NewIterator(options->rep);
+  return result;
+}
+
+const leveldb_snapshot_t* leveldb_create_snapshot(leveldb_t* db) {
+  leveldb_snapshot_t* result = new leveldb_snapshot_t;
+  result->rep = db->rep->GetSnapshot();
+  return result;
+}
+
+void leveldb_release_snapshot(leveldb_t* db,
+                              const leveldb_snapshot_t* snapshot) {
+  db->rep->ReleaseSnapshot(snapshot->rep);
+  delete snapshot;
+}
+
+char* leveldb_property_value(leveldb_t* db, const char* propname) {
+  std::string tmp;
+  if (db->rep->GetProperty(Slice(propname), &tmp)) {
+    // We use strdup() since we expect human readable output.
+    return strdup(tmp.c_str());
+  } else {
+    return nullptr;
+  }
+}
+
+void leveldb_approximate_sizes(leveldb_t* db, int num_ranges,
+                               const char* const* range_start_key,
+                               const size_t* range_start_key_len,
+                               const char* const* range_limit_key,
+                               const size_t* range_limit_key_len,
+                               uint64_t* sizes) {
+  Range* ranges = new Range[num_ranges];
+  for (int i = 0; i < num_ranges; i++) {
+    ranges[i].start = Slice(range_start_key[i], range_start_key_len[i]);
+    ranges[i].limit = Slice(range_limit_key[i], range_limit_key_len[i]);
+  }
+  db->rep->GetApproximateSizes(ranges, num_ranges, sizes);
+  delete[] ranges;
+}
+
+void leveldb_compact_range(leveldb_t* db, const char* start_key,
+                           size_t start_key_len, const char* limit_key,
+                           size_t limit_key_len) {
+  Slice a, b;
+  db->rep->CompactRange(
+      // Pass null Slice if corresponding "const char*" is null
+      (start_key ? (a = Slice(start_key, start_key_len), &a) : nullptr),
+      (limit_key ? (b = Slice(limit_key, limit_key_len), &b) : nullptr));
+}
+
+void leveldb_destroy_db(const leveldb_options_t* options, const char* name,
+                        char** errptr) {
+  SaveError(errptr, DestroyDB(name, options->rep));
+}
+
+void leveldb_repair_db(const leveldb_options_t* options, const char* name,
+                       char** errptr) {
+  SaveError(errptr, RepairDB(name, options->rep));
+}
+
+void leveldb_iter_destroy(leveldb_iterator_t* iter) {
+  delete iter->rep;
+  delete iter;
+}
+
+unsigned char leveldb_iter_valid(const leveldb_iterator_t* iter) {
+  return iter->rep->Valid();
+}
+
+void leveldb_iter_seek_to_first(leveldb_iterator_t* iter) {
+  iter->rep->SeekToFirst();
+}
+
+void leveldb_iter_seek_to_last(leveldb_iterator_t* iter) {
+  iter->rep->SeekToLast();
+}
+
+void leveldb_iter_seek(leveldb_iterator_t* iter, const char* k, size_t klen) {
+  iter->rep->Seek(Slice(k, klen));
+}
+
+void leveldb_iter_next(leveldb_iterator_t* iter) { iter->rep->Next(); }
+
+void leveldb_iter_prev(leveldb_iterator_t* iter) { iter->rep->Prev(); }
+
+const char* leveldb_iter_key(const leveldb_iterator_t* iter, size_t* klen) {
+  Slice s = iter->rep->key();
+  *klen = s.size();
+  return s.data();
+}
+
+const char* leveldb_iter_value(const leveldb_iterator_t* iter, size_t* vlen) {
+  Slice s = iter->rep->value();
+  *vlen = s.size();
+  return s.data();
+}
+
+void leveldb_iter_get_error(const leveldb_iterator_t* iter, char** errptr) {
+  SaveError(errptr, iter->rep->status());
+}
+
+leveldb_writebatch_t* leveldb_writebatch_create() {
+  return new leveldb_writebatch_t;
+}
+
+void leveldb_writebatch_destroy(leveldb_writebatch_t* b) { delete b; }
+
+void leveldb_writebatch_clear(leveldb_writebatch_t* b) { b->rep.Clear(); }
+
+void leveldb_writebatch_put(leveldb_writebatch_t* b, const char* key,
+                            size_t klen, const char* val, size_t vlen) {
+  b->rep.Put(Slice(key, klen), Slice(val, vlen));
+}
+
+void leveldb_writebatch_delete(leveldb_writebatch_t* b, const char* key,
+                               size_t klen) {
+  b->rep.Delete(Slice(key, klen));
+}
+
+void leveldb_writebatch_iterate(const leveldb_writebatch_t* b, void* state,
+                                void (*put)(void*, const char* k, size_t klen,
+                                            const char* v, size_t vlen),
+                                void (*deleted)(void*, const char* k,
+                                                size_t klen)) {
+  class H : public WriteBatch::Handler {
+   public:
+    void* state_;
+    void (*put_)(void*, const char* k, size_t klen, const char* v, size_t vlen);
+    void (*deleted_)(void*, const char* k, size_t klen);
+    virtual void Put(const Slice& key, const Slice& value) {
+      (*put_)(state_, key.data(), key.size(), value.data(), value.size());
+    }
+    virtual void Delete(const Slice& key) {
+      (*deleted_)(state_, key.data(), key.size());
+    }
+  };
+  H handler;
+  handler.state_ = state;
+  handler.put_ = put;
+  handler.deleted_ = deleted;
+  b->rep.Iterate(&handler);
+}
+
+void leveldb_writebatch_append(leveldb_writebatch_t* destination,
+                               const leveldb_writebatch_t* source) {
+  destination->rep.Append(source->rep);
+}
+
+leveldb_options_t* leveldb_options_create() { return new leveldb_options_t; }
+
+void leveldb_options_destroy(leveldb_options_t* options) { delete options; }
+
+void leveldb_options_set_comparator(leveldb_options_t* opt,
+                                    leveldb_comparator_t* cmp) {
+  opt->rep.comparator = cmp;
+}
+
+void leveldb_options_set_filter_policy(leveldb_options_t* opt,
+                                       leveldb_filterpolicy_t* policy) {
+  opt->rep.filter_policy = policy;
+}
+
+void leveldb_options_set_create_if_missing(leveldb_options_t* opt,
+                                           unsigned char v) {
+  opt->rep.create_if_missing = v;
+}
+
+void leveldb_options_set_error_if_exists(leveldb_options_t* opt,
+                                         unsigned char v) {
+  opt->rep.error_if_exists = v;
+}
+
+void leveldb_options_set_paranoid_checks(leveldb_options_t* opt,
+                                         unsigned char v) {
+  opt->rep.paranoid_checks = v;
+}
+
+void leveldb_options_set_env(leveldb_options_t* opt, leveldb_env_t* env) {
+  opt->rep.env = (env ? env->rep : nullptr);
+}
+
+void leveldb_options_set_info_log(leveldb_options_t* opt, leveldb_logger_t* l) {
+  opt->rep.info_log = (l ? l->rep : nullptr);
+}
+
+void leveldb_options_set_write_buffer_size(leveldb_options_t* opt, size_t s) {
+  opt->rep.write_buffer_size = s;
+}
+
+void leveldb_options_set_max_open_files(leveldb_options_t* opt, int n) {
+  opt->rep.max_open_files = n;
+}
+
+void leveldb_options_set_cache(leveldb_options_t* opt, leveldb_cache_t* c) {
+  opt->rep.block_cache = c->rep;
+}
+
+void leveldb_options_set_block_size(leveldb_options_t* opt, size_t s) {
+  opt->rep.block_size = s;
+}
+
+void leveldb_options_set_block_restart_interval(leveldb_options_t* opt, int n) {
+  opt->rep.block_restart_interval = n;
+}
+
+void leveldb_options_set_max_file_size(leveldb_options_t* opt, size_t s) {
+  opt->rep.max_file_size = s;
+}
+
+void leveldb_options_set_compression(leveldb_options_t* opt, int t) {
+  opt->rep.compression = static_cast<CompressionType>(t);
+}
+
+leveldb_comparator_t* leveldb_comparator_create(
+    void* state, void (*destructor)(void*),
+    int (*compare)(void*, const char* a, size_t alen, const char* b,
+                   size_t blen),
+    const char* (*name)(void*)) {
+  leveldb_comparator_t* result = new leveldb_comparator_t;
+  result->state_ = state;
+  result->destructor_ = destructor;
+  result->compare_ = compare;
+  result->name_ = name;
+  return result;
+}
+
+void leveldb_comparator_destroy(leveldb_comparator_t* cmp) { delete cmp; }
+
+leveldb_filterpolicy_t* leveldb_filterpolicy_create(
+    void* state, void (*destructor)(void*),
+    char* (*create_filter)(void*, const char* const* key_array,
+                           const size_t* key_length_array, int num_keys,
+                           size_t* filter_length),
+    unsigned char (*key_may_match)(void*, const char* key, size_t length,
+                                   const char* filter, size_t filter_length),
+    const char* (*name)(void*)) {
+  leveldb_filterpolicy_t* result = new leveldb_filterpolicy_t;
+  result->state_ = state;
+  result->destructor_ = destructor;
+  result->create_ = create_filter;
+  result->key_match_ = key_may_match;
+  result->name_ = name;
+  return result;
+}
+
+void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t* filter) {
+  delete filter;
+}
+
+leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom(int bits_per_key) {
+  // Make a leveldb_filterpolicy_t, but override all of its methods so
+  // they delegate to a NewBloomFilterPolicy() instead of user
+  // supplied C functions.
+  struct Wrapper : public leveldb_filterpolicy_t {
+    static void DoNothing(void*) {}
+
+    ~Wrapper() { delete rep_; }
+    const char* Name() const { return rep_->Name(); }
+    void CreateFilter(const Slice* keys, int n, std::string* dst) const {
+      return rep_->CreateFilter(keys, n, dst);
+    }
+    bool KeyMayMatch(const Slice& key, const Slice& filter) const {
+      return rep_->KeyMayMatch(key, filter);
+    }
+
+    const FilterPolicy* rep_;
+  };
+  Wrapper* wrapper = new Wrapper;
+  wrapper->rep_ = NewBloomFilterPolicy(bits_per_key);
+  wrapper->state_ = nullptr;
+  wrapper->destructor_ = &Wrapper::DoNothing;
+  return wrapper;
+}
+
+leveldb_readoptions_t* leveldb_readoptions_create() {
+  return new leveldb_readoptions_t;
+}
+
+void leveldb_readoptions_destroy(leveldb_readoptions_t* opt) { delete opt; }
+
+void leveldb_readoptions_set_verify_checksums(leveldb_readoptions_t* opt,
+                                              unsigned char v) {
+  opt->rep.verify_checksums = v;
+}
+
+void leveldb_readoptions_set_fill_cache(leveldb_readoptions_t* opt,
+                                        unsigned char v) {
+  opt->rep.fill_cache = v;
+}
+
+void leveldb_readoptions_set_snapshot(leveldb_readoptions_t* opt,
+                                      const leveldb_snapshot_t* snap) {
+  opt->rep.snapshot = (snap ? snap->rep : nullptr);
+}
+
+leveldb_writeoptions_t* leveldb_writeoptions_create() {
+  return new leveldb_writeoptions_t;
+}
+
+void leveldb_writeoptions_destroy(leveldb_writeoptions_t* opt) { delete opt; }
+
+void leveldb_writeoptions_set_sync(leveldb_writeoptions_t* opt,
+                                   unsigned char v) {
+  opt->rep.sync = v;
+}
+
+leveldb_cache_t* leveldb_cache_create_lru(size_t capacity) {
+  leveldb_cache_t* c = new leveldb_cache_t;
+  c->rep = NewLRUCache(capacity);
+  return c;
+}
+
+void leveldb_cache_destroy(leveldb_cache_t* cache) {
+  delete cache->rep;
+  delete cache;
+}
+
+leveldb_env_t* leveldb_create_default_env() {
+  leveldb_env_t* result = new leveldb_env_t;
+  result->rep = Env::Default();
+  result->is_default = true;
+  return result;
+}
+
+void leveldb_env_destroy(leveldb_env_t* env) {
+  if (!env->is_default) delete env->rep;
+  delete env;
+}
+
+char* leveldb_env_get_test_directory(leveldb_env_t* env) {
+  std::string result;
+  if (!env->rep->GetTestDirectory(&result).ok()) {
+    return nullptr;
+  }
+
+  char* buffer = static_cast<char*>(malloc(result.size() + 1));
+  memcpy(buffer, result.data(), result.size());
+  buffer[result.size()] = '\0';
+  return buffer;
+}
+
+void leveldb_free(void* ptr) { free(ptr); }
+
+int leveldb_major_version() { return kMajorVersion; }
+
+int leveldb_minor_version() { return kMinorVersion; }
+
+}  // end extern "C"
diff --git a/ChattingApp 000/Pods/leveldb-library/db/db_impl.cc b/ChattingApp 000/Pods/leveldb-library/db/db_impl.cc
new file mode 100644
index 0000000..761ebf6
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/db_impl.cc	
@@ -0,0 +1,1550 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/db_impl.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include <algorithm>
+#include <atomic>
+#include <set>
+#include <string>
+#include <vector>
+
+#include "db/builder.h"
+#include "db/db_iter.h"
+#include "db/dbformat.h"
+#include "db/filename.h"
+#include "db/log_reader.h"
+#include "db/log_writer.h"
+#include "db/memtable.h"
+#include "db/table_cache.h"
+#include "db/version_set.h"
+#include "db/write_batch_internal.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+#include "leveldb/status.h"
+#include "leveldb/table.h"
+#include "leveldb/table_builder.h"
+#include "port/port.h"
+#include "table/block.h"
+#include "table/merger.h"
+#include "table/two_level_iterator.h"
+#include "util/coding.h"
+#include "util/logging.h"
+#include "util/mutexlock.h"
+
+namespace leveldb {
+
+const int kNumNonTableCacheFiles = 10;
+
+// Information kept for every waiting writer
+struct DBImpl::Writer {
+  explicit Writer(port::Mutex* mu)
+      : batch(nullptr), sync(false), done(false), cv(mu) {}
+
+  Status status;
+  WriteBatch* batch;
+  bool sync;
+  bool done;
+  port::CondVar cv;
+};
+
+struct DBImpl::CompactionState {
+  // Files produced by compaction
+  struct Output {
+    uint64_t number;
+    uint64_t file_size;
+    InternalKey smallest, largest;
+  };
+
+  Output* current_output() { return &outputs[outputs.size() - 1]; }
+
+  explicit CompactionState(Compaction* c)
+      : compaction(c),
+        smallest_snapshot(0),
+        outfile(nullptr),
+        builder(nullptr),
+        total_bytes(0) {}
+
+  Compaction* const compaction;
+
+  // Sequence numbers < smallest_snapshot are not significant since we
+  // will never have to service a snapshot below smallest_snapshot.
+  // Therefore if we have seen a sequence number S <= smallest_snapshot,
+  // we can drop all entries for the same key with sequence numbers < S.
+  SequenceNumber smallest_snapshot;
+
+  std::vector<Output> outputs;
+
+  // State kept for output being generated
+  WritableFile* outfile;
+  TableBuilder* builder;
+
+  uint64_t total_bytes;
+};
+
+// Fix user-supplied options to be reasonable
+template <class T, class V>
+static void ClipToRange(T* ptr, V minvalue, V maxvalue) {
+  if (static_cast<V>(*ptr) > maxvalue) *ptr = maxvalue;
+  if (static_cast<V>(*ptr) < minvalue) *ptr = minvalue;
+}
+Options SanitizeOptions(const std::string& dbname,
+                        const InternalKeyComparator* icmp,
+                        const InternalFilterPolicy* ipolicy,
+                        const Options& src) {
+  Options result = src;
+  result.comparator = icmp;
+  result.filter_policy = (src.filter_policy != nullptr) ? ipolicy : nullptr;
+  ClipToRange(&result.max_open_files, 64 + kNumNonTableCacheFiles, 50000);
+  ClipToRange(&result.write_buffer_size, 64 << 10, 1 << 30);
+  ClipToRange(&result.max_file_size, 1 << 20, 1 << 30);
+  ClipToRange(&result.block_size, 1 << 10, 4 << 20);
+  if (result.info_log == nullptr) {
+    // Open a log file in the same directory as the db
+    src.env->CreateDir(dbname);  // In case it does not exist
+    src.env->RenameFile(InfoLogFileName(dbname), OldInfoLogFileName(dbname));
+    Status s = src.env->NewLogger(InfoLogFileName(dbname), &result.info_log);
+    if (!s.ok()) {
+      // No place suitable for logging
+      result.info_log = nullptr;
+    }
+  }
+  if (result.block_cache == nullptr) {
+    result.block_cache = NewLRUCache(8 << 20);
+  }
+  return result;
+}
+
+static int TableCacheSize(const Options& sanitized_options) {
+  // Reserve ten files or so for other uses and give the rest to TableCache.
+  return sanitized_options.max_open_files - kNumNonTableCacheFiles;
+}
+
+DBImpl::DBImpl(const Options& raw_options, const std::string& dbname)
+    : env_(raw_options.env),
+      internal_comparator_(raw_options.comparator),
+      internal_filter_policy_(raw_options.filter_policy),
+      options_(SanitizeOptions(dbname, &internal_comparator_,
+                               &internal_filter_policy_, raw_options)),
+      owns_info_log_(options_.info_log != raw_options.info_log),
+      owns_cache_(options_.block_cache != raw_options.block_cache),
+      dbname_(dbname),
+      table_cache_(new TableCache(dbname_, options_, TableCacheSize(options_))),
+      db_lock_(nullptr),
+      shutting_down_(false),
+      background_work_finished_signal_(&mutex_),
+      mem_(nullptr),
+      imm_(nullptr),
+      has_imm_(false),
+      logfile_(nullptr),
+      logfile_number_(0),
+      log_(nullptr),
+      seed_(0),
+      tmp_batch_(new WriteBatch),
+      background_compaction_scheduled_(false),
+      manual_compaction_(nullptr),
+      versions_(new VersionSet(dbname_, &options_, table_cache_,
+                               &internal_comparator_)) {}
+
+DBImpl::~DBImpl() {
+  // Wait for background work to finish.
+  mutex_.Lock();
+  shutting_down_.store(true, std::memory_order_release);
+  while (background_compaction_scheduled_) {
+    background_work_finished_signal_.Wait();
+  }
+  mutex_.Unlock();
+
+  if (db_lock_ != nullptr) {
+    env_->UnlockFile(db_lock_);
+  }
+
+  delete versions_;
+  if (mem_ != nullptr) mem_->Unref();
+  if (imm_ != nullptr) imm_->Unref();
+  delete tmp_batch_;
+  delete log_;
+  delete logfile_;
+  delete table_cache_;
+
+  if (owns_info_log_) {
+    delete options_.info_log;
+  }
+  if (owns_cache_) {
+    delete options_.block_cache;
+  }
+}
+
+Status DBImpl::NewDB() {
+  VersionEdit new_db;
+  new_db.SetComparatorName(user_comparator()->Name());
+  new_db.SetLogNumber(0);
+  new_db.SetNextFile(2);
+  new_db.SetLastSequence(0);
+
+  const std::string manifest = DescriptorFileName(dbname_, 1);
+  WritableFile* file;
+  Status s = env_->NewWritableFile(manifest, &file);
+  if (!s.ok()) {
+    return s;
+  }
+  {
+    log::Writer log(file);
+    std::string record;
+    new_db.EncodeTo(&record);
+    s = log.AddRecord(record);
+    if (s.ok()) {
+      s = file->Close();
+    }
+  }
+  delete file;
+  if (s.ok()) {
+    // Make "CURRENT" file that points to the new manifest file.
+    s = SetCurrentFile(env_, dbname_, 1);
+  } else {
+    env_->DeleteFile(manifest);
+  }
+  return s;
+}
+
+void DBImpl::MaybeIgnoreError(Status* s) const {
+  if (s->ok() || options_.paranoid_checks) {
+    // No change needed
+  } else {
+    Log(options_.info_log, "Ignoring error %s", s->ToString().c_str());
+    *s = Status::OK();
+  }
+}
+
+void DBImpl::DeleteObsoleteFiles() {
+  mutex_.AssertHeld();
+
+  if (!bg_error_.ok()) {
+    // After a background error, we don't know whether a new version may
+    // or may not have been committed, so we cannot safely garbage collect.
+    return;
+  }
+
+  // Make a set of all of the live files
+  std::set<uint64_t> live = pending_outputs_;
+  versions_->AddLiveFiles(&live);
+
+  std::vector<std::string> filenames;
+  env_->GetChildren(dbname_, &filenames);  // Ignoring errors on purpose
+  uint64_t number;
+  FileType type;
+  for (size_t i = 0; i < filenames.size(); i++) {
+    if (ParseFileName(filenames[i], &number, &type)) {
+      bool keep = true;
+      switch (type) {
+        case kLogFile:
+          keep = ((number >= versions_->LogNumber()) ||
+                  (number == versions_->PrevLogNumber()));
+          break;
+        case kDescriptorFile:
+          // Keep my manifest file, and any newer incarnations'
+          // (in case there is a race that allows other incarnations)
+          keep = (number >= versions_->ManifestFileNumber());
+          break;
+        case kTableFile:
+          keep = (live.find(number) != live.end());
+          break;
+        case kTempFile:
+          // Any temp files that are currently being written to must
+          // be recorded in pending_outputs_, which is inserted into "live"
+          keep = (live.find(number) != live.end());
+          break;
+        case kCurrentFile:
+        case kDBLockFile:
+        case kInfoLogFile:
+          keep = true;
+          break;
+      }
+
+      if (!keep) {
+        if (type == kTableFile) {
+          table_cache_->Evict(number);
+        }
+        Log(options_.info_log, "Delete type=%d #%lld\n", static_cast<int>(type),
+            static_cast<unsigned long long>(number));
+        env_->DeleteFile(dbname_ + "/" + filenames[i]);
+      }
+    }
+  }
+}
+
+Status DBImpl::Recover(VersionEdit* edit, bool* save_manifest) {
+  mutex_.AssertHeld();
+
+  // Ignore error from CreateDir since the creation of the DB is
+  // committed only when the descriptor is created, and this directory
+  // may already exist from a previous failed creation attempt.
+  env_->CreateDir(dbname_);
+  assert(db_lock_ == nullptr);
+  Status s = env_->LockFile(LockFileName(dbname_), &db_lock_);
+  if (!s.ok()) {
+    return s;
+  }
+
+  if (!env_->FileExists(CurrentFileName(dbname_))) {
+    if (options_.create_if_missing) {
+      s = NewDB();
+      if (!s.ok()) {
+        return s;
+      }
+    } else {
+      return Status::InvalidArgument(
+          dbname_, "does not exist (create_if_missing is false)");
+    }
+  } else {
+    if (options_.error_if_exists) {
+      return Status::InvalidArgument(dbname_,
+                                     "exists (error_if_exists is true)");
+    }
+  }
+
+  s = versions_->Recover(save_manifest);
+  if (!s.ok()) {
+    return s;
+  }
+  SequenceNumber max_sequence(0);
+
+  // Recover from all newer log files than the ones named in the
+  // descriptor (new log files may have been added by the previous
+  // incarnation without registering them in the descriptor).
+  //
+  // Note that PrevLogNumber() is no longer used, but we pay
+  // attention to it in case we are recovering a database
+  // produced by an older version of leveldb.
+  const uint64_t min_log = versions_->LogNumber();
+  const uint64_t prev_log = versions_->PrevLogNumber();
+  std::vector<std::string> filenames;
+  s = env_->GetChildren(dbname_, &filenames);
+  if (!s.ok()) {
+    return s;
+  }
+  std::set<uint64_t> expected;
+  versions_->AddLiveFiles(&expected);
+  uint64_t number;
+  FileType type;
+  std::vector<uint64_t> logs;
+  for (size_t i = 0; i < filenames.size(); i++) {
+    if (ParseFileName(filenames[i], &number, &type)) {
+      expected.erase(number);
+      if (type == kLogFile && ((number >= min_log) || (number == prev_log)))
+        logs.push_back(number);
+    }
+  }
+  if (!expected.empty()) {
+    char buf[50];
+    snprintf(buf, sizeof(buf), "%d missing files; e.g.",
+             static_cast<int>(expected.size()));
+    return Status::Corruption(buf, TableFileName(dbname_, *(expected.begin())));
+  }
+
+  // Recover in the order in which the logs were generated
+  std::sort(logs.begin(), logs.end());
+  for (size_t i = 0; i < logs.size(); i++) {
+    s = RecoverLogFile(logs[i], (i == logs.size() - 1), save_manifest, edit,
+                       &max_sequence);
+    if (!s.ok()) {
+      return s;
+    }
+
+    // The previous incarnation may not have written any MANIFEST
+    // records after allocating this log number.  So we manually
+    // update the file number allocation counter in VersionSet.
+    versions_->MarkFileNumberUsed(logs[i]);
+  }
+
+  if (versions_->LastSequence() < max_sequence) {
+    versions_->SetLastSequence(max_sequence);
+  }
+
+  return Status::OK();
+}
+
+Status DBImpl::RecoverLogFile(uint64_t log_number, bool last_log,
+                              bool* save_manifest, VersionEdit* edit,
+                              SequenceNumber* max_sequence) {
+  struct LogReporter : public log::Reader::Reporter {
+    Env* env;
+    Logger* info_log;
+    const char* fname;
+    Status* status;  // null if options_.paranoid_checks==false
+    virtual void Corruption(size_t bytes, const Status& s) {
+      Log(info_log, "%s%s: dropping %d bytes; %s",
+          (this->status == nullptr ? "(ignoring error) " : ""), fname,
+          static_cast<int>(bytes), s.ToString().c_str());
+      if (this->status != nullptr && this->status->ok()) *this->status = s;
+    }
+  };
+
+  mutex_.AssertHeld();
+
+  // Open the log file
+  std::string fname = LogFileName(dbname_, log_number);
+  SequentialFile* file;
+  Status status = env_->NewSequentialFile(fname, &file);
+  if (!status.ok()) {
+    MaybeIgnoreError(&status);
+    return status;
+  }
+
+  // Create the log reader.
+  LogReporter reporter;
+  reporter.env = env_;
+  reporter.info_log = options_.info_log;
+  reporter.fname = fname.c_str();
+  reporter.status = (options_.paranoid_checks ? &status : nullptr);
+  // We intentionally make log::Reader do checksumming even if
+  // paranoid_checks==false so that corruptions cause entire commits
+  // to be skipped instead of propagating bad information (like overly
+  // large sequence numbers).
+  log::Reader reader(file, &reporter, true /*checksum*/, 0 /*initial_offset*/);
+  Log(options_.info_log, "Recovering log #%llu",
+      (unsigned long long)log_number);
+
+  // Read all the records and add to a memtable
+  std::string scratch;
+  Slice record;
+  WriteBatch batch;
+  int compactions = 0;
+  MemTable* mem = nullptr;
+  while (reader.ReadRecord(&record, &scratch) && status.ok()) {
+    if (record.size() < 12) {
+      reporter.Corruption(record.size(),
+                          Status::Corruption("log record too small"));
+      continue;
+    }
+    WriteBatchInternal::SetContents(&batch, record);
+
+    if (mem == nullptr) {
+      mem = new MemTable(internal_comparator_);
+      mem->Ref();
+    }
+    status = WriteBatchInternal::InsertInto(&batch, mem);
+    MaybeIgnoreError(&status);
+    if (!status.ok()) {
+      break;
+    }
+    const SequenceNumber last_seq = WriteBatchInternal::Sequence(&batch) +
+                                    WriteBatchInternal::Count(&batch) - 1;
+    if (last_seq > *max_sequence) {
+      *max_sequence = last_seq;
+    }
+
+    if (mem->ApproximateMemoryUsage() > options_.write_buffer_size) {
+      compactions++;
+      *save_manifest = true;
+      status = WriteLevel0Table(mem, edit, nullptr);
+      mem->Unref();
+      mem = nullptr;
+      if (!status.ok()) {
+        // Reflect errors immediately so that conditions like full
+        // file-systems cause the DB::Open() to fail.
+        break;
+      }
+    }
+  }
+
+  delete file;
+
+  // See if we should keep reusing the last log file.
+  if (status.ok() && options_.reuse_logs && last_log && compactions == 0) {
+    assert(logfile_ == nullptr);
+    assert(log_ == nullptr);
+    assert(mem_ == nullptr);
+    uint64_t lfile_size;
+    if (env_->GetFileSize(fname, &lfile_size).ok() &&
+        env_->NewAppendableFile(fname, &logfile_).ok()) {
+      Log(options_.info_log, "Reusing old log %s \n", fname.c_str());
+      log_ = new log::Writer(logfile_, lfile_size);
+      logfile_number_ = log_number;
+      if (mem != nullptr) {
+        mem_ = mem;
+        mem = nullptr;
+      } else {
+        // mem can be nullptr if lognum exists but was empty.
+        mem_ = new MemTable(internal_comparator_);
+        mem_->Ref();
+      }
+    }
+  }
+
+  if (mem != nullptr) {
+    // mem did not get reused; compact it.
+    if (status.ok()) {
+      *save_manifest = true;
+      status = WriteLevel0Table(mem, edit, nullptr);
+    }
+    mem->Unref();
+  }
+
+  return status;
+}
+
+Status DBImpl::WriteLevel0Table(MemTable* mem, VersionEdit* edit,
+                                Version* base) {
+  mutex_.AssertHeld();
+  const uint64_t start_micros = env_->NowMicros();
+  FileMetaData meta;
+  meta.number = versions_->NewFileNumber();
+  pending_outputs_.insert(meta.number);
+  Iterator* iter = mem->NewIterator();
+  Log(options_.info_log, "Level-0 table #%llu: started",
+      (unsigned long long)meta.number);
+
+  Status s;
+  {
+    mutex_.Unlock();
+    s = BuildTable(dbname_, env_, options_, table_cache_, iter, &meta);
+    mutex_.Lock();
+  }
+
+  Log(options_.info_log, "Level-0 table #%llu: %lld bytes %s",
+      (unsigned long long)meta.number, (unsigned long long)meta.file_size,
+      s.ToString().c_str());
+  delete iter;
+  pending_outputs_.erase(meta.number);
+
+  // Note that if file_size is zero, the file has been deleted and
+  // should not be added to the manifest.
+  int level = 0;
+  if (s.ok() && meta.file_size > 0) {
+    const Slice min_user_key = meta.smallest.user_key();
+    const Slice max_user_key = meta.largest.user_key();
+    if (base != nullptr) {
+      level = base->PickLevelForMemTableOutput(min_user_key, max_user_key);
+    }
+    edit->AddFile(level, meta.number, meta.file_size, meta.smallest,
+                  meta.largest);
+  }
+
+  CompactionStats stats;
+  stats.micros = env_->NowMicros() - start_micros;
+  stats.bytes_written = meta.file_size;
+  stats_[level].Add(stats);
+  return s;
+}
+
+void DBImpl::CompactMemTable() {
+  mutex_.AssertHeld();
+  assert(imm_ != nullptr);
+
+  // Save the contents of the memtable as a new Table
+  VersionEdit edit;
+  Version* base = versions_->current();
+  base->Ref();
+  Status s = WriteLevel0Table(imm_, &edit, base);
+  base->Unref();
+
+  if (s.ok() && shutting_down_.load(std::memory_order_acquire)) {
+    s = Status::IOError("Deleting DB during memtable compaction");
+  }
+
+  // Replace immutable memtable with the generated Table
+  if (s.ok()) {
+    edit.SetPrevLogNumber(0);
+    edit.SetLogNumber(logfile_number_);  // Earlier logs no longer needed
+    s = versions_->LogAndApply(&edit, &mutex_);
+  }
+
+  if (s.ok()) {
+    // Commit to the new state
+    imm_->Unref();
+    imm_ = nullptr;
+    has_imm_.store(false, std::memory_order_release);
+    DeleteObsoleteFiles();
+  } else {
+    RecordBackgroundError(s);
+  }
+}
+
+void DBImpl::CompactRange(const Slice* begin, const Slice* end) {
+  int max_level_with_files = 1;
+  {
+    MutexLock l(&mutex_);
+    Version* base = versions_->current();
+    for (int level = 1; level < config::kNumLevels; level++) {
+      if (base->OverlapInLevel(level, begin, end)) {
+        max_level_with_files = level;
+      }
+    }
+  }
+  TEST_CompactMemTable();  // TODO(sanjay): Skip if memtable does not overlap
+  for (int level = 0; level < max_level_with_files; level++) {
+    TEST_CompactRange(level, begin, end);
+  }
+}
+
+void DBImpl::TEST_CompactRange(int level, const Slice* begin,
+                               const Slice* end) {
+  assert(level >= 0);
+  assert(level + 1 < config::kNumLevels);
+
+  InternalKey begin_storage, end_storage;
+
+  ManualCompaction manual;
+  manual.level = level;
+  manual.done = false;
+  if (begin == nullptr) {
+    manual.begin = nullptr;
+  } else {
+    begin_storage = InternalKey(*begin, kMaxSequenceNumber, kValueTypeForSeek);
+    manual.begin = &begin_storage;
+  }
+  if (end == nullptr) {
+    manual.end = nullptr;
+  } else {
+    end_storage = InternalKey(*end, 0, static_cast<ValueType>(0));
+    manual.end = &end_storage;
+  }
+
+  MutexLock l(&mutex_);
+  while (!manual.done && !shutting_down_.load(std::memory_order_acquire) &&
+         bg_error_.ok()) {
+    if (manual_compaction_ == nullptr) {  // Idle
+      manual_compaction_ = &manual;
+      MaybeScheduleCompaction();
+    } else {  // Running either my compaction or another compaction.
+      background_work_finished_signal_.Wait();
+    }
+  }
+  if (manual_compaction_ == &manual) {
+    // Cancel my manual compaction since we aborted early for some reason.
+    manual_compaction_ = nullptr;
+  }
+}
+
+Status DBImpl::TEST_CompactMemTable() {
+  // nullptr batch means just wait for earlier writes to be done
+  Status s = Write(WriteOptions(), nullptr);
+  if (s.ok()) {
+    // Wait until the compaction completes
+    MutexLock l(&mutex_);
+    while (imm_ != nullptr && bg_error_.ok()) {
+      background_work_finished_signal_.Wait();
+    }
+    if (imm_ != nullptr) {
+      s = bg_error_;
+    }
+  }
+  return s;
+}
+
+void DBImpl::RecordBackgroundError(const Status& s) {
+  mutex_.AssertHeld();
+  if (bg_error_.ok()) {
+    bg_error_ = s;
+    background_work_finished_signal_.SignalAll();
+  }
+}
+
+void DBImpl::MaybeScheduleCompaction() {
+  mutex_.AssertHeld();
+  if (background_compaction_scheduled_) {
+    // Already scheduled
+  } else if (shutting_down_.load(std::memory_order_acquire)) {
+    // DB is being deleted; no more background compactions
+  } else if (!bg_error_.ok()) {
+    // Already got an error; no more changes
+  } else if (imm_ == nullptr && manual_compaction_ == nullptr &&
+             !versions_->NeedsCompaction()) {
+    // No work to be done
+  } else {
+    background_compaction_scheduled_ = true;
+    env_->Schedule(&DBImpl::BGWork, this);
+  }
+}
+
+void DBImpl::BGWork(void* db) {
+  reinterpret_cast<DBImpl*>(db)->BackgroundCall();
+}
+
+void DBImpl::BackgroundCall() {
+  MutexLock l(&mutex_);
+  assert(background_compaction_scheduled_);
+  if (shutting_down_.load(std::memory_order_acquire)) {
+    // No more background work when shutting down.
+  } else if (!bg_error_.ok()) {
+    // No more background work after a background error.
+  } else {
+    BackgroundCompaction();
+  }
+
+  background_compaction_scheduled_ = false;
+
+  // Previous compaction may have produced too many files in a level,
+  // so reschedule another compaction if needed.
+  MaybeScheduleCompaction();
+  background_work_finished_signal_.SignalAll();
+}
+
+void DBImpl::BackgroundCompaction() {
+  mutex_.AssertHeld();
+
+  if (imm_ != nullptr) {
+    CompactMemTable();
+    return;
+  }
+
+  Compaction* c;
+  bool is_manual = (manual_compaction_ != nullptr);
+  InternalKey manual_end;
+  if (is_manual) {
+    ManualCompaction* m = manual_compaction_;
+    c = versions_->CompactRange(m->level, m->begin, m->end);
+    m->done = (c == nullptr);
+    if (c != nullptr) {
+      manual_end = c->input(0, c->num_input_files(0) - 1)->largest;
+    }
+    Log(options_.info_log,
+        "Manual compaction at level-%d from %s .. %s; will stop at %s\n",
+        m->level, (m->begin ? m->begin->DebugString().c_str() : "(begin)"),
+        (m->end ? m->end->DebugString().c_str() : "(end)"),
+        (m->done ? "(end)" : manual_end.DebugString().c_str()));
+  } else {
+    c = versions_->PickCompaction();
+  }
+
+  Status status;
+  if (c == nullptr) {
+    // Nothing to do
+  } else if (!is_manual && c->IsTrivialMove()) {
+    // Move file to next level
+    assert(c->num_input_files(0) == 1);
+    FileMetaData* f = c->input(0, 0);
+    c->edit()->DeleteFile(c->level(), f->number);
+    c->edit()->AddFile(c->level() + 1, f->number, f->file_size, f->smallest,
+                       f->largest);
+    status = versions_->LogAndApply(c->edit(), &mutex_);
+    if (!status.ok()) {
+      RecordBackgroundError(status);
+    }
+    VersionSet::LevelSummaryStorage tmp;
+    Log(options_.info_log, "Moved #%lld to level-%d %lld bytes %s: %s\n",
+        static_cast<unsigned long long>(f->number), c->level() + 1,
+        static_cast<unsigned long long>(f->file_size),
+        status.ToString().c_str(), versions_->LevelSummary(&tmp));
+  } else {
+    CompactionState* compact = new CompactionState(c);
+    status = DoCompactionWork(compact);
+    if (!status.ok()) {
+      RecordBackgroundError(status);
+    }
+    CleanupCompaction(compact);
+    c->ReleaseInputs();
+    DeleteObsoleteFiles();
+  }
+  delete c;
+
+  if (status.ok()) {
+    // Done
+  } else if (shutting_down_.load(std::memory_order_acquire)) {
+    // Ignore compaction errors found during shutting down
+  } else {
+    Log(options_.info_log, "Compaction error: %s", status.ToString().c_str());
+  }
+
+  if (is_manual) {
+    ManualCompaction* m = manual_compaction_;
+    if (!status.ok()) {
+      m->done = true;
+    }
+    if (!m->done) {
+      // We only compacted part of the requested range.  Update *m
+      // to the range that is left to be compacted.
+      m->tmp_storage = manual_end;
+      m->begin = &m->tmp_storage;
+    }
+    manual_compaction_ = nullptr;
+  }
+}
+
+void DBImpl::CleanupCompaction(CompactionState* compact) {
+  mutex_.AssertHeld();
+  if (compact->builder != nullptr) {
+    // May happen if we get a shutdown call in the middle of compaction
+    compact->builder->Abandon();
+    delete compact->builder;
+  } else {
+    assert(compact->outfile == nullptr);
+  }
+  delete compact->outfile;
+  for (size_t i = 0; i < compact->outputs.size(); i++) {
+    const CompactionState::Output& out = compact->outputs[i];
+    pending_outputs_.erase(out.number);
+  }
+  delete compact;
+}
+
+Status DBImpl::OpenCompactionOutputFile(CompactionState* compact) {
+  assert(compact != nullptr);
+  assert(compact->builder == nullptr);
+  uint64_t file_number;
+  {
+    mutex_.Lock();
+    file_number = versions_->NewFileNumber();
+    pending_outputs_.insert(file_number);
+    CompactionState::Output out;
+    out.number = file_number;
+    out.smallest.Clear();
+    out.largest.Clear();
+    compact->outputs.push_back(out);
+    mutex_.Unlock();
+  }
+
+  // Make the output file
+  std::string fname = TableFileName(dbname_, file_number);
+  Status s = env_->NewWritableFile(fname, &compact->outfile);
+  if (s.ok()) {
+    compact->builder = new TableBuilder(options_, compact->outfile);
+  }
+  return s;
+}
+
+Status DBImpl::FinishCompactionOutputFile(CompactionState* compact,
+                                          Iterator* input) {
+  assert(compact != nullptr);
+  assert(compact->outfile != nullptr);
+  assert(compact->builder != nullptr);
+
+  const uint64_t output_number = compact->current_output()->number;
+  assert(output_number != 0);
+
+  // Check for iterator errors
+  Status s = input->status();
+  const uint64_t current_entries = compact->builder->NumEntries();
+  if (s.ok()) {
+    s = compact->builder->Finish();
+  } else {
+    compact->builder->Abandon();
+  }
+  const uint64_t current_bytes = compact->builder->FileSize();
+  compact->current_output()->file_size = current_bytes;
+  compact->total_bytes += current_bytes;
+  delete compact->builder;
+  compact->builder = nullptr;
+
+  // Finish and check for file errors
+  if (s.ok()) {
+    s = compact->outfile->Sync();
+  }
+  if (s.ok()) {
+    s = compact->outfile->Close();
+  }
+  delete compact->outfile;
+  compact->outfile = nullptr;
+
+  if (s.ok() && current_entries > 0) {
+    // Verify that the table is usable
+    Iterator* iter =
+        table_cache_->NewIterator(ReadOptions(), output_number, current_bytes);
+    s = iter->status();
+    delete iter;
+    if (s.ok()) {
+      Log(options_.info_log, "Generated table #%llu@%d: %lld keys, %lld bytes",
+          (unsigned long long)output_number, compact->compaction->level(),
+          (unsigned long long)current_entries,
+          (unsigned long long)current_bytes);
+    }
+  }
+  return s;
+}
+
+Status DBImpl::InstallCompactionResults(CompactionState* compact) {
+  mutex_.AssertHeld();
+  Log(options_.info_log, "Compacted %d@%d + %d@%d files => %lld bytes",
+      compact->compaction->num_input_files(0), compact->compaction->level(),
+      compact->compaction->num_input_files(1), compact->compaction->level() + 1,
+      static_cast<long long>(compact->total_bytes));
+
+  // Add compaction outputs
+  compact->compaction->AddInputDeletions(compact->compaction->edit());
+  const int level = compact->compaction->level();
+  for (size_t i = 0; i < compact->outputs.size(); i++) {
+    const CompactionState::Output& out = compact->outputs[i];
+    compact->compaction->edit()->AddFile(level + 1, out.number, out.file_size,
+                                         out.smallest, out.largest);
+  }
+  return versions_->LogAndApply(compact->compaction->edit(), &mutex_);
+}
+
+Status DBImpl::DoCompactionWork(CompactionState* compact) {
+  const uint64_t start_micros = env_->NowMicros();
+  int64_t imm_micros = 0;  // Micros spent doing imm_ compactions
+
+  Log(options_.info_log, "Compacting %d@%d + %d@%d files",
+      compact->compaction->num_input_files(0), compact->compaction->level(),
+      compact->compaction->num_input_files(1),
+      compact->compaction->level() + 1);
+
+  assert(versions_->NumLevelFiles(compact->compaction->level()) > 0);
+  assert(compact->builder == nullptr);
+  assert(compact->outfile == nullptr);
+  if (snapshots_.empty()) {
+    compact->smallest_snapshot = versions_->LastSequence();
+  } else {
+    compact->smallest_snapshot = snapshots_.oldest()->sequence_number();
+  }
+
+  // Release mutex while we're actually doing the compaction work
+  mutex_.Unlock();
+
+  Iterator* input = versions_->MakeInputIterator(compact->compaction);
+  input->SeekToFirst();
+  Status status;
+  ParsedInternalKey ikey;
+  std::string current_user_key;
+  bool has_current_user_key = false;
+  SequenceNumber last_sequence_for_key = kMaxSequenceNumber;
+  for (; input->Valid() && !shutting_down_.load(std::memory_order_acquire);) {
+    // Prioritize immutable compaction work
+    if (has_imm_.load(std::memory_order_relaxed)) {
+      const uint64_t imm_start = env_->NowMicros();
+      mutex_.Lock();
+      if (imm_ != nullptr) {
+        CompactMemTable();
+        // Wake up MakeRoomForWrite() if necessary.
+        background_work_finished_signal_.SignalAll();
+      }
+      mutex_.Unlock();
+      imm_micros += (env_->NowMicros() - imm_start);
+    }
+
+    Slice key = input->key();
+    if (compact->compaction->ShouldStopBefore(key) &&
+        compact->builder != nullptr) {
+      status = FinishCompactionOutputFile(compact, input);
+      if (!status.ok()) {
+        break;
+      }
+    }
+
+    // Handle key/value, add to state, etc.
+    bool drop = false;
+    if (!ParseInternalKey(key, &ikey)) {
+      // Do not hide error keys
+      current_user_key.clear();
+      has_current_user_key = false;
+      last_sequence_for_key = kMaxSequenceNumber;
+    } else {
+      if (!has_current_user_key ||
+          user_comparator()->Compare(ikey.user_key, Slice(current_user_key)) !=
+              0) {
+        // First occurrence of this user key
+        current_user_key.assign(ikey.user_key.data(), ikey.user_key.size());
+        has_current_user_key = true;
+        last_sequence_for_key = kMaxSequenceNumber;
+      }
+
+      if (last_sequence_for_key <= compact->smallest_snapshot) {
+        // Hidden by an newer entry for same user key
+        drop = true;  // (A)
+      } else if (ikey.type == kTypeDeletion &&
+                 ikey.sequence <= compact->smallest_snapshot &&
+                 compact->compaction->IsBaseLevelForKey(ikey.user_key)) {
+        // For this user key:
+        // (1) there is no data in higher levels
+        // (2) data in lower levels will have larger sequence numbers
+        // (3) data in layers that are being compacted here and have
+        //     smaller sequence numbers will be dropped in the next
+        //     few iterations of this loop (by rule (A) above).
+        // Therefore this deletion marker is obsolete and can be dropped.
+        drop = true;
+      }
+
+      last_sequence_for_key = ikey.sequence;
+    }
+#if 0
+    Log(options_.info_log,
+        "  Compact: %s, seq %d, type: %d %d, drop: %d, is_base: %d, "
+        "%d smallest_snapshot: %d",
+        ikey.user_key.ToString().c_str(),
+        (int)ikey.sequence, ikey.type, kTypeValue, drop,
+        compact->compaction->IsBaseLevelForKey(ikey.user_key),
+        (int)last_sequence_for_key, (int)compact->smallest_snapshot);
+#endif
+
+    if (!drop) {
+      // Open output file if necessary
+      if (compact->builder == nullptr) {
+        status = OpenCompactionOutputFile(compact);
+        if (!status.ok()) {
+          break;
+        }
+      }
+      if (compact->builder->NumEntries() == 0) {
+        compact->current_output()->smallest.DecodeFrom(key);
+      }
+      compact->current_output()->largest.DecodeFrom(key);
+      compact->builder->Add(key, input->value());
+
+      // Close output file if it is big enough
+      if (compact->builder->FileSize() >=
+          compact->compaction->MaxOutputFileSize()) {
+        status = FinishCompactionOutputFile(compact, input);
+        if (!status.ok()) {
+          break;
+        }
+      }
+    }
+
+    input->Next();
+  }
+
+  if (status.ok() && shutting_down_.load(std::memory_order_acquire)) {
+    status = Status::IOError("Deleting DB during compaction");
+  }
+  if (status.ok() && compact->builder != nullptr) {
+    status = FinishCompactionOutputFile(compact, input);
+  }
+  if (status.ok()) {
+    status = input->status();
+  }
+  delete input;
+  input = nullptr;
+
+  CompactionStats stats;
+  stats.micros = env_->NowMicros() - start_micros - imm_micros;
+  for (int which = 0; which < 2; which++) {
+    for (int i = 0; i < compact->compaction->num_input_files(which); i++) {
+      stats.bytes_read += compact->compaction->input(which, i)->file_size;
+    }
+  }
+  for (size_t i = 0; i < compact->outputs.size(); i++) {
+    stats.bytes_written += compact->outputs[i].file_size;
+  }
+
+  mutex_.Lock();
+  stats_[compact->compaction->level() + 1].Add(stats);
+
+  if (status.ok()) {
+    status = InstallCompactionResults(compact);
+  }
+  if (!status.ok()) {
+    RecordBackgroundError(status);
+  }
+  VersionSet::LevelSummaryStorage tmp;
+  Log(options_.info_log, "compacted to: %s", versions_->LevelSummary(&tmp));
+  return status;
+}
+
+namespace {
+
+struct IterState {
+  port::Mutex* const mu;
+  Version* const version GUARDED_BY(mu);
+  MemTable* const mem GUARDED_BY(mu);
+  MemTable* const imm GUARDED_BY(mu);
+
+  IterState(port::Mutex* mutex, MemTable* mem, MemTable* imm, Version* version)
+      : mu(mutex), version(version), mem(mem), imm(imm) {}
+};
+
+static void CleanupIteratorState(void* arg1, void* arg2) {
+  IterState* state = reinterpret_cast<IterState*>(arg1);
+  state->mu->Lock();
+  state->mem->Unref();
+  if (state->imm != nullptr) state->imm->Unref();
+  state->version->Unref();
+  state->mu->Unlock();
+  delete state;
+}
+
+}  // anonymous namespace
+
+Iterator* DBImpl::NewInternalIterator(const ReadOptions& options,
+                                      SequenceNumber* latest_snapshot,
+                                      uint32_t* seed) {
+  mutex_.Lock();
+  *latest_snapshot = versions_->LastSequence();
+
+  // Collect together all needed child iterators
+  std::vector<Iterator*> list;
+  list.push_back(mem_->NewIterator());
+  mem_->Ref();
+  if (imm_ != nullptr) {
+    list.push_back(imm_->NewIterator());
+    imm_->Ref();
+  }
+  versions_->current()->AddIterators(options, &list);
+  Iterator* internal_iter =
+      NewMergingIterator(&internal_comparator_, &list[0], list.size());
+  versions_->current()->Ref();
+
+  IterState* cleanup = new IterState(&mutex_, mem_, imm_, versions_->current());
+  internal_iter->RegisterCleanup(CleanupIteratorState, cleanup, nullptr);
+
+  *seed = ++seed_;
+  mutex_.Unlock();
+  return internal_iter;
+}
+
+Iterator* DBImpl::TEST_NewInternalIterator() {
+  SequenceNumber ignored;
+  uint32_t ignored_seed;
+  return NewInternalIterator(ReadOptions(), &ignored, &ignored_seed);
+}
+
+int64_t DBImpl::TEST_MaxNextLevelOverlappingBytes() {
+  MutexLock l(&mutex_);
+  return versions_->MaxNextLevelOverlappingBytes();
+}
+
+Status DBImpl::Get(const ReadOptions& options, const Slice& key,
+                   std::string* value) {
+  Status s;
+  MutexLock l(&mutex_);
+  SequenceNumber snapshot;
+  if (options.snapshot != nullptr) {
+    snapshot =
+        static_cast<const SnapshotImpl*>(options.snapshot)->sequence_number();
+  } else {
+    snapshot = versions_->LastSequence();
+  }
+
+  MemTable* mem = mem_;
+  MemTable* imm = imm_;
+  Version* current = versions_->current();
+  mem->Ref();
+  if (imm != nullptr) imm->Ref();
+  current->Ref();
+
+  bool have_stat_update = false;
+  Version::GetStats stats;
+
+  // Unlock while reading from files and memtables
+  {
+    mutex_.Unlock();
+    // First look in the memtable, then in the immutable memtable (if any).
+    LookupKey lkey(key, snapshot);
+    if (mem->Get(lkey, value, &s)) {
+      // Done
+    } else if (imm != nullptr && imm->Get(lkey, value, &s)) {
+      // Done
+    } else {
+      s = current->Get(options, lkey, value, &stats);
+      have_stat_update = true;
+    }
+    mutex_.Lock();
+  }
+
+  if (have_stat_update && current->UpdateStats(stats)) {
+    MaybeScheduleCompaction();
+  }
+  mem->Unref();
+  if (imm != nullptr) imm->Unref();
+  current->Unref();
+  return s;
+}
+
+Iterator* DBImpl::NewIterator(const ReadOptions& options) {
+  SequenceNumber latest_snapshot;
+  uint32_t seed;
+  Iterator* iter = NewInternalIterator(options, &latest_snapshot, &seed);
+  return NewDBIterator(this, user_comparator(), iter,
+                       (options.snapshot != nullptr
+                            ? static_cast<const SnapshotImpl*>(options.snapshot)
+                                  ->sequence_number()
+                            : latest_snapshot),
+                       seed);
+}
+
+void DBImpl::RecordReadSample(Slice key) {
+  MutexLock l(&mutex_);
+  if (versions_->current()->RecordReadSample(key)) {
+    MaybeScheduleCompaction();
+  }
+}
+
+const Snapshot* DBImpl::GetSnapshot() {
+  MutexLock l(&mutex_);
+  return snapshots_.New(versions_->LastSequence());
+}
+
+void DBImpl::ReleaseSnapshot(const Snapshot* snapshot) {
+  MutexLock l(&mutex_);
+  snapshots_.Delete(static_cast<const SnapshotImpl*>(snapshot));
+}
+
+// Convenience methods
+Status DBImpl::Put(const WriteOptions& o, const Slice& key, const Slice& val) {
+  return DB::Put(o, key, val);
+}
+
+Status DBImpl::Delete(const WriteOptions& options, const Slice& key) {
+  return DB::Delete(options, key);
+}
+
+Status DBImpl::Write(const WriteOptions& options, WriteBatch* updates) {
+  Writer w(&mutex_);
+  w.batch = updates;
+  w.sync = options.sync;
+  w.done = false;
+
+  MutexLock l(&mutex_);
+  writers_.push_back(&w);
+  while (!w.done && &w != writers_.front()) {
+    w.cv.Wait();
+  }
+  if (w.done) {
+    return w.status;
+  }
+
+  // May temporarily unlock and wait.
+  Status status = MakeRoomForWrite(updates == nullptr);
+  uint64_t last_sequence = versions_->LastSequence();
+  Writer* last_writer = &w;
+  if (status.ok() && updates != nullptr) {  // nullptr batch is for compactions
+    WriteBatch* updates = BuildBatchGroup(&last_writer);
+    WriteBatchInternal::SetSequence(updates, last_sequence + 1);
+    last_sequence += WriteBatchInternal::Count(updates);
+
+    // Add to log and apply to memtable.  We can release the lock
+    // during this phase since &w is currently responsible for logging
+    // and protects against concurrent loggers and concurrent writes
+    // into mem_.
+    {
+      mutex_.Unlock();
+      status = log_->AddRecord(WriteBatchInternal::Contents(updates));
+      bool sync_error = false;
+      if (status.ok() && options.sync) {
+        status = logfile_->Sync();
+        if (!status.ok()) {
+          sync_error = true;
+        }
+      }
+      if (status.ok()) {
+        status = WriteBatchInternal::InsertInto(updates, mem_);
+      }
+      mutex_.Lock();
+      if (sync_error) {
+        // The state of the log file is indeterminate: the log record we
+        // just added may or may not show up when the DB is re-opened.
+        // So we force the DB into a mode where all future writes fail.
+        RecordBackgroundError(status);
+      }
+    }
+    if (updates == tmp_batch_) tmp_batch_->Clear();
+
+    versions_->SetLastSequence(last_sequence);
+  }
+
+  while (true) {
+    Writer* ready = writers_.front();
+    writers_.pop_front();
+    if (ready != &w) {
+      ready->status = status;
+      ready->done = true;
+      ready->cv.Signal();
+    }
+    if (ready == last_writer) break;
+  }
+
+  // Notify new head of write queue
+  if (!writers_.empty()) {
+    writers_.front()->cv.Signal();
+  }
+
+  return status;
+}
+
+// REQUIRES: Writer list must be non-empty
+// REQUIRES: First writer must have a non-null batch
+WriteBatch* DBImpl::BuildBatchGroup(Writer** last_writer) {
+  mutex_.AssertHeld();
+  assert(!writers_.empty());
+  Writer* first = writers_.front();
+  WriteBatch* result = first->batch;
+  assert(result != nullptr);
+
+  size_t size = WriteBatchInternal::ByteSize(first->batch);
+
+  // Allow the group to grow up to a maximum size, but if the
+  // original write is small, limit the growth so we do not slow
+  // down the small write too much.
+  size_t max_size = 1 << 20;
+  if (size <= (128 << 10)) {
+    max_size = size + (128 << 10);
+  }
+
+  *last_writer = first;
+  std::deque<Writer*>::iterator iter = writers_.begin();
+  ++iter;  // Advance past "first"
+  for (; iter != writers_.end(); ++iter) {
+    Writer* w = *iter;
+    if (w->sync && !first->sync) {
+      // Do not include a sync write into a batch handled by a non-sync write.
+      break;
+    }
+
+    if (w->batch != nullptr) {
+      size += WriteBatchInternal::ByteSize(w->batch);
+      if (size > max_size) {
+        // Do not make batch too big
+        break;
+      }
+
+      // Append to *result
+      if (result == first->batch) {
+        // Switch to temporary batch instead of disturbing caller's batch
+        result = tmp_batch_;
+        assert(WriteBatchInternal::Count(result) == 0);
+        WriteBatchInternal::Append(result, first->batch);
+      }
+      WriteBatchInternal::Append(result, w->batch);
+    }
+    *last_writer = w;
+  }
+  return result;
+}
+
+// REQUIRES: mutex_ is held
+// REQUIRES: this thread is currently at the front of the writer queue
+Status DBImpl::MakeRoomForWrite(bool force) {
+  mutex_.AssertHeld();
+  assert(!writers_.empty());
+  bool allow_delay = !force;
+  Status s;
+  while (true) {
+    if (!bg_error_.ok()) {
+      // Yield previous error
+      s = bg_error_;
+      break;
+    } else if (allow_delay && versions_->NumLevelFiles(0) >=
+                                  config::kL0_SlowdownWritesTrigger) {
+      // We are getting close to hitting a hard limit on the number of
+      // L0 files.  Rather than delaying a single write by several
+      // seconds when we hit the hard limit, start delaying each
+      // individual write by 1ms to reduce latency variance.  Also,
+      // this delay hands over some CPU to the compaction thread in
+      // case it is sharing the same core as the writer.
+      mutex_.Unlock();
+      env_->SleepForMicroseconds(1000);
+      allow_delay = false;  // Do not delay a single write more than once
+      mutex_.Lock();
+    } else if (!force &&
+               (mem_->ApproximateMemoryUsage() <= options_.write_buffer_size)) {
+      // There is room in current memtable
+      break;
+    } else if (imm_ != nullptr) {
+      // We have filled up the current memtable, but the previous
+      // one is still being compacted, so we wait.
+      Log(options_.info_log, "Current memtable full; waiting...\n");
+      background_work_finished_signal_.Wait();
+    } else if (versions_->NumLevelFiles(0) >= config::kL0_StopWritesTrigger) {
+      // There are too many level-0 files.
+      Log(options_.info_log, "Too many L0 files; waiting...\n");
+      background_work_finished_signal_.Wait();
+    } else {
+      // Attempt to switch to a new memtable and trigger compaction of old
+      assert(versions_->PrevLogNumber() == 0);
+      uint64_t new_log_number = versions_->NewFileNumber();
+      WritableFile* lfile = nullptr;
+      s = env_->NewWritableFile(LogFileName(dbname_, new_log_number), &lfile);
+      if (!s.ok()) {
+        // Avoid chewing through file number space in a tight loop.
+        versions_->ReuseFileNumber(new_log_number);
+        break;
+      }
+      delete log_;
+      delete logfile_;
+      logfile_ = lfile;
+      logfile_number_ = new_log_number;
+      log_ = new log::Writer(lfile);
+      imm_ = mem_;
+      has_imm_.store(true, std::memory_order_release);
+      mem_ = new MemTable(internal_comparator_);
+      mem_->Ref();
+      force = false;  // Do not force another compaction if have room
+      MaybeScheduleCompaction();
+    }
+  }
+  return s;
+}
+
+bool DBImpl::GetProperty(const Slice& property, std::string* value) {
+  value->clear();
+
+  MutexLock l(&mutex_);
+  Slice in = property;
+  Slice prefix("leveldb.");
+  if (!in.starts_with(prefix)) return false;
+  in.remove_prefix(prefix.size());
+
+  if (in.starts_with("num-files-at-level")) {
+    in.remove_prefix(strlen("num-files-at-level"));
+    uint64_t level;
+    bool ok = ConsumeDecimalNumber(&in, &level) && in.empty();
+    if (!ok || level >= config::kNumLevels) {
+      return false;
+    } else {
+      char buf[100];
+      snprintf(buf, sizeof(buf), "%d",
+               versions_->NumLevelFiles(static_cast<int>(level)));
+      *value = buf;
+      return true;
+    }
+  } else if (in == "stats") {
+    char buf[200];
+    snprintf(buf, sizeof(buf),
+             "                               Compactions\n"
+             "Level  Files Size(MB) Time(sec) Read(MB) Write(MB)\n"
+             "--------------------------------------------------\n");
+    value->append(buf);
+    for (int level = 0; level < config::kNumLevels; level++) {
+      int files = versions_->NumLevelFiles(level);
+      if (stats_[level].micros > 0 || files > 0) {
+        snprintf(buf, sizeof(buf), "%3d %8d %8.0f %9.0f %8.0f %9.0f\n", level,
+                 files, versions_->NumLevelBytes(level) / 1048576.0,
+                 stats_[level].micros / 1e6,
+                 stats_[level].bytes_read / 1048576.0,
+                 stats_[level].bytes_written / 1048576.0);
+        value->append(buf);
+      }
+    }
+    return true;
+  } else if (in == "sstables") {
+    *value = versions_->current()->DebugString();
+    return true;
+  } else if (in == "approximate-memory-usage") {
+    size_t total_usage = options_.block_cache->TotalCharge();
+    if (mem_) {
+      total_usage += mem_->ApproximateMemoryUsage();
+    }
+    if (imm_) {
+      total_usage += imm_->ApproximateMemoryUsage();
+    }
+    char buf[50];
+    snprintf(buf, sizeof(buf), "%llu",
+             static_cast<unsigned long long>(total_usage));
+    value->append(buf);
+    return true;
+  }
+
+  return false;
+}
+
+void DBImpl::GetApproximateSizes(const Range* range, int n, uint64_t* sizes) {
+  // TODO(opt): better implementation
+  Version* v;
+  {
+    MutexLock l(&mutex_);
+    versions_->current()->Ref();
+    v = versions_->current();
+  }
+
+  for (int i = 0; i < n; i++) {
+    // Convert user_key into a corresponding internal key.
+    InternalKey k1(range[i].start, kMaxSequenceNumber, kValueTypeForSeek);
+    InternalKey k2(range[i].limit, kMaxSequenceNumber, kValueTypeForSeek);
+    uint64_t start = versions_->ApproximateOffsetOf(v, k1);
+    uint64_t limit = versions_->ApproximateOffsetOf(v, k2);
+    sizes[i] = (limit >= start ? limit - start : 0);
+  }
+
+  {
+    MutexLock l(&mutex_);
+    v->Unref();
+  }
+}
+
+// Default implementations of convenience methods that subclasses of DB
+// can call if they wish
+Status DB::Put(const WriteOptions& opt, const Slice& key, const Slice& value) {
+  WriteBatch batch;
+  batch.Put(key, value);
+  return Write(opt, &batch);
+}
+
+Status DB::Delete(const WriteOptions& opt, const Slice& key) {
+  WriteBatch batch;
+  batch.Delete(key);
+  return Write(opt, &batch);
+}
+
+DB::~DB() {}
+
+Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
+  *dbptr = nullptr;
+
+  DBImpl* impl = new DBImpl(options, dbname);
+  impl->mutex_.Lock();
+  VersionEdit edit;
+  // Recover handles create_if_missing, error_if_exists
+  bool save_manifest = false;
+  Status s = impl->Recover(&edit, &save_manifest);
+  if (s.ok() && impl->mem_ == nullptr) {
+    // Create new log and a corresponding memtable.
+    uint64_t new_log_number = impl->versions_->NewFileNumber();
+    WritableFile* lfile;
+    s = options.env->NewWritableFile(LogFileName(dbname, new_log_number),
+                                     &lfile);
+    if (s.ok()) {
+      edit.SetLogNumber(new_log_number);
+      impl->logfile_ = lfile;
+      impl->logfile_number_ = new_log_number;
+      impl->log_ = new log::Writer(lfile);
+      impl->mem_ = new MemTable(impl->internal_comparator_);
+      impl->mem_->Ref();
+    }
+  }
+  if (s.ok() && save_manifest) {
+    edit.SetPrevLogNumber(0);  // No older logs needed after recovery.
+    edit.SetLogNumber(impl->logfile_number_);
+    s = impl->versions_->LogAndApply(&edit, &impl->mutex_);
+  }
+  if (s.ok()) {
+    impl->DeleteObsoleteFiles();
+    impl->MaybeScheduleCompaction();
+  }
+  impl->mutex_.Unlock();
+  if (s.ok()) {
+    assert(impl->mem_ != nullptr);
+    *dbptr = impl;
+  } else {
+    delete impl;
+  }
+  return s;
+}
+
+Snapshot::~Snapshot() {}
+
+Status DestroyDB(const std::string& dbname, const Options& options) {
+  Env* env = options.env;
+  std::vector<std::string> filenames;
+  Status result = env->GetChildren(dbname, &filenames);
+  if (!result.ok()) {
+    // Ignore error in case directory does not exist
+    return Status::OK();
+  }
+
+  FileLock* lock;
+  const std::string lockname = LockFileName(dbname);
+  result = env->LockFile(lockname, &lock);
+  if (result.ok()) {
+    uint64_t number;
+    FileType type;
+    for (size_t i = 0; i < filenames.size(); i++) {
+      if (ParseFileName(filenames[i], &number, &type) &&
+          type != kDBLockFile) {  // Lock file will be deleted at end
+        Status del = env->DeleteFile(dbname + "/" + filenames[i]);
+        if (result.ok() && !del.ok()) {
+          result = del;
+        }
+      }
+    }
+    env->UnlockFile(lock);  // Ignore error since state is already gone
+    env->DeleteFile(lockname);
+    env->DeleteDir(dbname);  // Ignore error in case dir contains other files
+  }
+  return result;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/db_impl.h b/ChattingApp 000/Pods/leveldb-library/db/db_impl.h
new file mode 100644
index 0000000..ae87d6e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/db_impl.h	
@@ -0,0 +1,216 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_DB_IMPL_H_
+#define STORAGE_LEVELDB_DB_DB_IMPL_H_
+
+#include <atomic>
+#include <deque>
+#include <set>
+#include <string>
+
+#include "db/dbformat.h"
+#include "db/log_writer.h"
+#include "db/snapshot.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+#include "port/port.h"
+#include "port/thread_annotations.h"
+
+namespace leveldb {
+
+class MemTable;
+class TableCache;
+class Version;
+class VersionEdit;
+class VersionSet;
+
+class DBImpl : public DB {
+ public:
+  DBImpl(const Options& options, const std::string& dbname);
+
+  DBImpl(const DBImpl&) = delete;
+  DBImpl& operator=(const DBImpl&) = delete;
+
+  virtual ~DBImpl();
+
+  // Implementations of the DB interface
+  virtual Status Put(const WriteOptions&, const Slice& key, const Slice& value);
+  virtual Status Delete(const WriteOptions&, const Slice& key);
+  virtual Status Write(const WriteOptions& options, WriteBatch* updates);
+  virtual Status Get(const ReadOptions& options, const Slice& key,
+                     std::string* value);
+  virtual Iterator* NewIterator(const ReadOptions&);
+  virtual const Snapshot* GetSnapshot();
+  virtual void ReleaseSnapshot(const Snapshot* snapshot);
+  virtual bool GetProperty(const Slice& property, std::string* value);
+  virtual void GetApproximateSizes(const Range* range, int n, uint64_t* sizes);
+  virtual void CompactRange(const Slice* begin, const Slice* end);
+
+  // Extra methods (for testing) that are not in the public DB interface
+
+  // Compact any files in the named level that overlap [*begin,*end]
+  void TEST_CompactRange(int level, const Slice* begin, const Slice* end);
+
+  // Force current memtable contents to be compacted.
+  Status TEST_CompactMemTable();
+
+  // Return an internal iterator over the current state of the database.
+  // The keys of this iterator are internal keys (see format.h).
+  // The returned iterator should be deleted when no longer needed.
+  Iterator* TEST_NewInternalIterator();
+
+  // Return the maximum overlapping data (in bytes) at next level for any
+  // file at a level >= 1.
+  int64_t TEST_MaxNextLevelOverlappingBytes();
+
+  // Record a sample of bytes read at the specified internal key.
+  // Samples are taken approximately once every config::kReadBytesPeriod
+  // bytes.
+  void RecordReadSample(Slice key);
+
+ private:
+  friend class DB;
+  struct CompactionState;
+  struct Writer;
+
+  // Information for a manual compaction
+  struct ManualCompaction {
+    int level;
+    bool done;
+    const InternalKey* begin;  // null means beginning of key range
+    const InternalKey* end;    // null means end of key range
+    InternalKey tmp_storage;   // Used to keep track of compaction progress
+  };
+
+  // Per level compaction stats.  stats_[level] stores the stats for
+  // compactions that produced data for the specified "level".
+  struct CompactionStats {
+    CompactionStats() : micros(0), bytes_read(0), bytes_written(0) {}
+
+    void Add(const CompactionStats& c) {
+      this->micros += c.micros;
+      this->bytes_read += c.bytes_read;
+      this->bytes_written += c.bytes_written;
+    }
+
+    int64_t micros;
+    int64_t bytes_read;
+    int64_t bytes_written;
+  };
+
+  Iterator* NewInternalIterator(const ReadOptions&,
+                                SequenceNumber* latest_snapshot,
+                                uint32_t* seed);
+
+  Status NewDB();
+
+  // Recover the descriptor from persistent storage.  May do a significant
+  // amount of work to recover recently logged updates.  Any changes to
+  // be made to the descriptor are added to *edit.
+  Status Recover(VersionEdit* edit, bool* save_manifest)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  void MaybeIgnoreError(Status* s) const;
+
+  // Delete any unneeded files and stale in-memory entries.
+  void DeleteObsoleteFiles() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  // Compact the in-memory write buffer to disk.  Switches to a new
+  // log-file/memtable and writes a new descriptor iff successful.
+  // Errors are recorded in bg_error_.
+  void CompactMemTable() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  Status RecoverLogFile(uint64_t log_number, bool last_log, bool* save_manifest,
+                        VersionEdit* edit, SequenceNumber* max_sequence)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  Status WriteLevel0Table(MemTable* mem, VersionEdit* edit, Version* base)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  Status MakeRoomForWrite(bool force /* compact even if there is room? */)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+  WriteBatch* BuildBatchGroup(Writer** last_writer)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  void RecordBackgroundError(const Status& s);
+
+  void MaybeScheduleCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+  static void BGWork(void* db);
+  void BackgroundCall();
+  void BackgroundCompaction() EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+  void CleanupCompaction(CompactionState* compact)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+  Status DoCompactionWork(CompactionState* compact)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  Status OpenCompactionOutputFile(CompactionState* compact);
+  Status FinishCompactionOutputFile(CompactionState* compact, Iterator* input);
+  Status InstallCompactionResults(CompactionState* compact)
+      EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  const Comparator* user_comparator() const {
+    return internal_comparator_.user_comparator();
+  }
+
+  // Constant after construction
+  Env* const env_;
+  const InternalKeyComparator internal_comparator_;
+  const InternalFilterPolicy internal_filter_policy_;
+  const Options options_;  // options_.comparator == &internal_comparator_
+  const bool owns_info_log_;
+  const bool owns_cache_;
+  const std::string dbname_;
+
+  // table_cache_ provides its own synchronization
+  TableCache* const table_cache_;
+
+  // Lock over the persistent DB state.  Non-null iff successfully acquired.
+  FileLock* db_lock_;
+
+  // State below is protected by mutex_
+  port::Mutex mutex_;
+  std::atomic<bool> shutting_down_;
+  port::CondVar background_work_finished_signal_ GUARDED_BY(mutex_);
+  MemTable* mem_;
+  MemTable* imm_ GUARDED_BY(mutex_);  // Memtable being compacted
+  std::atomic<bool> has_imm_;         // So bg thread can detect non-null imm_
+  WritableFile* logfile_;
+  uint64_t logfile_number_ GUARDED_BY(mutex_);
+  log::Writer* log_;
+  uint32_t seed_ GUARDED_BY(mutex_);  // For sampling.
+
+  // Queue of writers.
+  std::deque<Writer*> writers_ GUARDED_BY(mutex_);
+  WriteBatch* tmp_batch_ GUARDED_BY(mutex_);
+
+  SnapshotList snapshots_ GUARDED_BY(mutex_);
+
+  // Set of table files to protect from deletion because they are
+  // part of ongoing compactions.
+  std::set<uint64_t> pending_outputs_ GUARDED_BY(mutex_);
+
+  // Has a background compaction been scheduled or is running?
+  bool background_compaction_scheduled_ GUARDED_BY(mutex_);
+
+  ManualCompaction* manual_compaction_ GUARDED_BY(mutex_);
+
+  VersionSet* const versions_;
+
+  // Have we encountered a background error in paranoid mode?
+  Status bg_error_ GUARDED_BY(mutex_);
+
+  CompactionStats stats_[config::kNumLevels] GUARDED_BY(mutex_);
+};
+
+// Sanitize db options.  The caller should delete result.info_log if
+// it is not equal to src.info_log.
+Options SanitizeOptions(const std::string& db,
+                        const InternalKeyComparator* icmp,
+                        const InternalFilterPolicy* ipolicy,
+                        const Options& src);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_DB_IMPL_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/db_iter.cc b/ChattingApp 000/Pods/leveldb-library/db/db_iter.cc
new file mode 100644
index 0000000..8ff288e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/db_iter.cc	
@@ -0,0 +1,309 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/db_iter.h"
+
+#include "db/db_impl.h"
+#include "db/dbformat.h"
+#include "db/filename.h"
+#include "leveldb/env.h"
+#include "leveldb/iterator.h"
+#include "port/port.h"
+#include "util/logging.h"
+#include "util/mutexlock.h"
+#include "util/random.h"
+
+namespace leveldb {
+
+#if 0
+static void DumpInternalIter(Iterator* iter) {
+  for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
+    ParsedInternalKey k;
+    if (!ParseInternalKey(iter->key(), &k)) {
+      fprintf(stderr, "Corrupt '%s'\n", EscapeString(iter->key()).c_str());
+    } else {
+      fprintf(stderr, "@ '%s'\n", k.DebugString().c_str());
+    }
+  }
+}
+#endif
+
+namespace {
+
+// Memtables and sstables that make the DB representation contain
+// (userkey,seq,type) => uservalue entries.  DBIter
+// combines multiple entries for the same userkey found in the DB
+// representation into a single entry while accounting for sequence
+// numbers, deletion markers, overwrites, etc.
+class DBIter : public Iterator {
+ public:
+  // Which direction is the iterator currently moving?
+  // (1) When moving forward, the internal iterator is positioned at
+  //     the exact entry that yields this->key(), this->value()
+  // (2) When moving backwards, the internal iterator is positioned
+  //     just before all entries whose user key == this->key().
+  enum Direction { kForward, kReverse };
+
+  DBIter(DBImpl* db, const Comparator* cmp, Iterator* iter, SequenceNumber s,
+         uint32_t seed)
+      : db_(db),
+        user_comparator_(cmp),
+        iter_(iter),
+        sequence_(s),
+        direction_(kForward),
+        valid_(false),
+        rnd_(seed),
+        bytes_until_read_sampling_(RandomCompactionPeriod()) {}
+
+  DBIter(const DBIter&) = delete;
+  DBIter& operator=(const DBIter&) = delete;
+
+  virtual ~DBIter() { delete iter_; }
+  virtual bool Valid() const { return valid_; }
+  virtual Slice key() const {
+    assert(valid_);
+    return (direction_ == kForward) ? ExtractUserKey(iter_->key()) : saved_key_;
+  }
+  virtual Slice value() const {
+    assert(valid_);
+    return (direction_ == kForward) ? iter_->value() : saved_value_;
+  }
+  virtual Status status() const {
+    if (status_.ok()) {
+      return iter_->status();
+    } else {
+      return status_;
+    }
+  }
+
+  virtual void Next();
+  virtual void Prev();
+  virtual void Seek(const Slice& target);
+  virtual void SeekToFirst();
+  virtual void SeekToLast();
+
+ private:
+  void FindNextUserEntry(bool skipping, std::string* skip);
+  void FindPrevUserEntry();
+  bool ParseKey(ParsedInternalKey* key);
+
+  inline void SaveKey(const Slice& k, std::string* dst) {
+    dst->assign(k.data(), k.size());
+  }
+
+  inline void ClearSavedValue() {
+    if (saved_value_.capacity() > 1048576) {
+      std::string empty;
+      swap(empty, saved_value_);
+    } else {
+      saved_value_.clear();
+    }
+  }
+
+  // Picks the number of bytes that can be read until a compaction is scheduled.
+  size_t RandomCompactionPeriod() {
+    return rnd_.Uniform(2 * config::kReadBytesPeriod);
+  }
+
+  DBImpl* db_;
+  const Comparator* const user_comparator_;
+  Iterator* const iter_;
+  SequenceNumber const sequence_;
+  Status status_;
+  std::string saved_key_;    // == current key when direction_==kReverse
+  std::string saved_value_;  // == current raw value when direction_==kReverse
+  Direction direction_;
+  bool valid_;
+  Random rnd_;
+  size_t bytes_until_read_sampling_;
+};
+
+inline bool DBIter::ParseKey(ParsedInternalKey* ikey) {
+  Slice k = iter_->key();
+
+  size_t bytes_read = k.size() + iter_->value().size();
+  while (bytes_until_read_sampling_ < bytes_read) {
+    bytes_until_read_sampling_ += RandomCompactionPeriod();
+    db_->RecordReadSample(k);
+  }
+  assert(bytes_until_read_sampling_ >= bytes_read);
+  bytes_until_read_sampling_ -= bytes_read;
+
+  if (!ParseInternalKey(k, ikey)) {
+    status_ = Status::Corruption("corrupted internal key in DBIter");
+    return false;
+  } else {
+    return true;
+  }
+}
+
+void DBIter::Next() {
+  assert(valid_);
+
+  if (direction_ == kReverse) {  // Switch directions?
+    direction_ = kForward;
+    // iter_ is pointing just before the entries for this->key(),
+    // so advance into the range of entries for this->key() and then
+    // use the normal skipping code below.
+    if (!iter_->Valid()) {
+      iter_->SeekToFirst();
+    } else {
+      iter_->Next();
+    }
+    if (!iter_->Valid()) {
+      valid_ = false;
+      saved_key_.clear();
+      return;
+    }
+    // saved_key_ already contains the key to skip past.
+  } else {
+    // Store in saved_key_ the current key so we skip it below.
+    SaveKey(ExtractUserKey(iter_->key()), &saved_key_);
+  }
+
+  FindNextUserEntry(true, &saved_key_);
+}
+
+void DBIter::FindNextUserEntry(bool skipping, std::string* skip) {
+  // Loop until we hit an acceptable entry to yield
+  assert(iter_->Valid());
+  assert(direction_ == kForward);
+  do {
+    ParsedInternalKey ikey;
+    if (ParseKey(&ikey) && ikey.sequence <= sequence_) {
+      switch (ikey.type) {
+        case kTypeDeletion:
+          // Arrange to skip all upcoming entries for this key since
+          // they are hidden by this deletion.
+          SaveKey(ikey.user_key, skip);
+          skipping = true;
+          break;
+        case kTypeValue:
+          if (skipping &&
+              user_comparator_->Compare(ikey.user_key, *skip) <= 0) {
+            // Entry hidden
+          } else {
+            valid_ = true;
+            saved_key_.clear();
+            return;
+          }
+          break;
+      }
+    }
+    iter_->Next();
+  } while (iter_->Valid());
+  saved_key_.clear();
+  valid_ = false;
+}
+
+void DBIter::Prev() {
+  assert(valid_);
+
+  if (direction_ == kForward) {  // Switch directions?
+    // iter_ is pointing at the current entry.  Scan backwards until
+    // the key changes so we can use the normal reverse scanning code.
+    assert(iter_->Valid());  // Otherwise valid_ would have been false
+    SaveKey(ExtractUserKey(iter_->key()), &saved_key_);
+    while (true) {
+      iter_->Prev();
+      if (!iter_->Valid()) {
+        valid_ = false;
+        saved_key_.clear();
+        ClearSavedValue();
+        return;
+      }
+      if (user_comparator_->Compare(ExtractUserKey(iter_->key()), saved_key_) <
+          0) {
+        break;
+      }
+    }
+    direction_ = kReverse;
+  }
+
+  FindPrevUserEntry();
+}
+
+void DBIter::FindPrevUserEntry() {
+  assert(direction_ == kReverse);
+
+  ValueType value_type = kTypeDeletion;
+  if (iter_->Valid()) {
+    do {
+      ParsedInternalKey ikey;
+      if (ParseKey(&ikey) && ikey.sequence <= sequence_) {
+        if ((value_type != kTypeDeletion) &&
+            user_comparator_->Compare(ikey.user_key, saved_key_) < 0) {
+          // We encountered a non-deleted value in entries for previous keys,
+          break;
+        }
+        value_type = ikey.type;
+        if (value_type == kTypeDeletion) {
+          saved_key_.clear();
+          ClearSavedValue();
+        } else {
+          Slice raw_value = iter_->value();
+          if (saved_value_.capacity() > raw_value.size() + 1048576) {
+            std::string empty;
+            swap(empty, saved_value_);
+          }
+          SaveKey(ExtractUserKey(iter_->key()), &saved_key_);
+          saved_value_.assign(raw_value.data(), raw_value.size());
+        }
+      }
+      iter_->Prev();
+    } while (iter_->Valid());
+  }
+
+  if (value_type == kTypeDeletion) {
+    // End
+    valid_ = false;
+    saved_key_.clear();
+    ClearSavedValue();
+    direction_ = kForward;
+  } else {
+    valid_ = true;
+  }
+}
+
+void DBIter::Seek(const Slice& target) {
+  direction_ = kForward;
+  ClearSavedValue();
+  saved_key_.clear();
+  AppendInternalKey(&saved_key_,
+                    ParsedInternalKey(target, sequence_, kValueTypeForSeek));
+  iter_->Seek(saved_key_);
+  if (iter_->Valid()) {
+    FindNextUserEntry(false, &saved_key_ /* temporary storage */);
+  } else {
+    valid_ = false;
+  }
+}
+
+void DBIter::SeekToFirst() {
+  direction_ = kForward;
+  ClearSavedValue();
+  iter_->SeekToFirst();
+  if (iter_->Valid()) {
+    FindNextUserEntry(false, &saved_key_ /* temporary storage */);
+  } else {
+    valid_ = false;
+  }
+}
+
+void DBIter::SeekToLast() {
+  direction_ = kReverse;
+  ClearSavedValue();
+  iter_->SeekToLast();
+  FindPrevUserEntry();
+}
+
+}  // anonymous namespace
+
+Iterator* NewDBIterator(DBImpl* db, const Comparator* user_key_comparator,
+                        Iterator* internal_iter, SequenceNumber sequence,
+                        uint32_t seed) {
+  return new DBIter(db, user_key_comparator, internal_iter, sequence, seed);
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/db_iter.h b/ChattingApp 000/Pods/leveldb-library/db/db_iter.h
new file mode 100644
index 0000000..fd93e91
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/db_iter.h	
@@ -0,0 +1,26 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_DB_ITER_H_
+#define STORAGE_LEVELDB_DB_DB_ITER_H_
+
+#include <stdint.h>
+
+#include "db/dbformat.h"
+#include "leveldb/db.h"
+
+namespace leveldb {
+
+class DBImpl;
+
+// Return a new iterator that converts internal keys (yielded by
+// "*internal_iter") that were live at the specified "sequence" number
+// into appropriate user keys.
+Iterator* NewDBIterator(DBImpl* db, const Comparator* user_key_comparator,
+                        Iterator* internal_iter, SequenceNumber sequence,
+                        uint32_t seed);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_DB_ITER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/dbformat.cc b/ChattingApp 000/Pods/leveldb-library/db/dbformat.cc
new file mode 100644
index 0000000..69e8dc6
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/dbformat.cc	
@@ -0,0 +1,140 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/dbformat.h"
+
+#include <stdio.h>
+
+#include "port/port.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+static uint64_t PackSequenceAndType(uint64_t seq, ValueType t) {
+  assert(seq <= kMaxSequenceNumber);
+  assert(t <= kValueTypeForSeek);
+  return (seq << 8) | t;
+}
+
+void AppendInternalKey(std::string* result, const ParsedInternalKey& key) {
+  result->append(key.user_key.data(), key.user_key.size());
+  PutFixed64(result, PackSequenceAndType(key.sequence, key.type));
+}
+
+std::string ParsedInternalKey::DebugString() const {
+  char buf[50];
+  snprintf(buf, sizeof(buf), "' @ %llu : %d", (unsigned long long)sequence,
+           int(type));
+  std::string result = "'";
+  result += EscapeString(user_key.ToString());
+  result += buf;
+  return result;
+}
+
+std::string InternalKey::DebugString() const {
+  std::string result;
+  ParsedInternalKey parsed;
+  if (ParseInternalKey(rep_, &parsed)) {
+    result = parsed.DebugString();
+  } else {
+    result = "(bad)";
+    result.append(EscapeString(rep_));
+  }
+  return result;
+}
+
+const char* InternalKeyComparator::Name() const {
+  return "leveldb.InternalKeyComparator";
+}
+
+int InternalKeyComparator::Compare(const Slice& akey, const Slice& bkey) const {
+  // Order by:
+  //    increasing user key (according to user-supplied comparator)
+  //    decreasing sequence number
+  //    decreasing type (though sequence# should be enough to disambiguate)
+  int r = user_comparator_->Compare(ExtractUserKey(akey), ExtractUserKey(bkey));
+  if (r == 0) {
+    const uint64_t anum = DecodeFixed64(akey.data() + akey.size() - 8);
+    const uint64_t bnum = DecodeFixed64(bkey.data() + bkey.size() - 8);
+    if (anum > bnum) {
+      r = -1;
+    } else if (anum < bnum) {
+      r = +1;
+    }
+  }
+  return r;
+}
+
+void InternalKeyComparator::FindShortestSeparator(std::string* start,
+                                                  const Slice& limit) const {
+  // Attempt to shorten the user portion of the key
+  Slice user_start = ExtractUserKey(*start);
+  Slice user_limit = ExtractUserKey(limit);
+  std::string tmp(user_start.data(), user_start.size());
+  user_comparator_->FindShortestSeparator(&tmp, user_limit);
+  if (tmp.size() < user_start.size() &&
+      user_comparator_->Compare(user_start, tmp) < 0) {
+    // User key has become shorter physically, but larger logically.
+    // Tack on the earliest possible number to the shortened user key.
+    PutFixed64(&tmp,
+               PackSequenceAndType(kMaxSequenceNumber, kValueTypeForSeek));
+    assert(this->Compare(*start, tmp) < 0);
+    assert(this->Compare(tmp, limit) < 0);
+    start->swap(tmp);
+  }
+}
+
+void InternalKeyComparator::FindShortSuccessor(std::string* key) const {
+  Slice user_key = ExtractUserKey(*key);
+  std::string tmp(user_key.data(), user_key.size());
+  user_comparator_->FindShortSuccessor(&tmp);
+  if (tmp.size() < user_key.size() &&
+      user_comparator_->Compare(user_key, tmp) < 0) {
+    // User key has become shorter physically, but larger logically.
+    // Tack on the earliest possible number to the shortened user key.
+    PutFixed64(&tmp,
+               PackSequenceAndType(kMaxSequenceNumber, kValueTypeForSeek));
+    assert(this->Compare(*key, tmp) < 0);
+    key->swap(tmp);
+  }
+}
+
+const char* InternalFilterPolicy::Name() const { return user_policy_->Name(); }
+
+void InternalFilterPolicy::CreateFilter(const Slice* keys, int n,
+                                        std::string* dst) const {
+  // We rely on the fact that the code in table.cc does not mind us
+  // adjusting keys[].
+  Slice* mkey = const_cast<Slice*>(keys);
+  for (int i = 0; i < n; i++) {
+    mkey[i] = ExtractUserKey(keys[i]);
+    // TODO(sanjay): Suppress dups?
+  }
+  user_policy_->CreateFilter(keys, n, dst);
+}
+
+bool InternalFilterPolicy::KeyMayMatch(const Slice& key, const Slice& f) const {
+  return user_policy_->KeyMayMatch(ExtractUserKey(key), f);
+}
+
+LookupKey::LookupKey(const Slice& user_key, SequenceNumber s) {
+  size_t usize = user_key.size();
+  size_t needed = usize + 13;  // A conservative estimate
+  char* dst;
+  if (needed <= sizeof(space_)) {
+    dst = space_;
+  } else {
+    dst = new char[needed];
+  }
+  start_ = dst;
+  dst = EncodeVarint32(dst, usize + 8);
+  kstart_ = dst;
+  memcpy(dst, user_key.data(), usize);
+  dst += usize;
+  EncodeFixed64(dst, PackSequenceAndType(s, kValueTypeForSeek));
+  dst += 8;
+  end_ = dst;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/dbformat.h b/ChattingApp 000/Pods/leveldb-library/db/dbformat.h
new file mode 100644
index 0000000..013028a
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/dbformat.h	
@@ -0,0 +1,218 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_DBFORMAT_H_
+#define STORAGE_LEVELDB_DB_DBFORMAT_H_
+
+#include <stdio.h>
+
+#include "leveldb/comparator.h"
+#include "leveldb/db.h"
+#include "leveldb/filter_policy.h"
+#include "leveldb/slice.h"
+#include "leveldb/table_builder.h"
+#include "util/coding.h"
+#include "util/logging.h"
+
+namespace leveldb {
+
+// Grouping of constants.  We may want to make some of these
+// parameters set via options.
+namespace config {
+static const int kNumLevels = 7;
+
+// Level-0 compaction is started when we hit this many files.
+static const int kL0_CompactionTrigger = 4;
+
+// Soft limit on number of level-0 files.  We slow down writes at this point.
+static const int kL0_SlowdownWritesTrigger = 8;
+
+// Maximum number of level-0 files.  We stop writes at this point.
+static const int kL0_StopWritesTrigger = 12;
+
+// Maximum level to which a new compacted memtable is pushed if it
+// does not create overlap.  We try to push to level 2 to avoid the
+// relatively expensive level 0=>1 compactions and to avoid some
+// expensive manifest file operations.  We do not push all the way to
+// the largest level since that can generate a lot of wasted disk
+// space if the same key space is being repeatedly overwritten.
+static const int kMaxMemCompactLevel = 2;
+
+// Approximate gap in bytes between samples of data read during iteration.
+static const int kReadBytesPeriod = 1048576;
+
+}  // namespace config
+
+class InternalKey;
+
+// Value types encoded as the last component of internal keys.
+// DO NOT CHANGE THESE ENUM VALUES: they are embedded in the on-disk
+// data structures.
+enum ValueType { kTypeDeletion = 0x0, kTypeValue = 0x1 };
+// kValueTypeForSeek defines the ValueType that should be passed when
+// constructing a ParsedInternalKey object for seeking to a particular
+// sequence number (since we sort sequence numbers in decreasing order
+// and the value type is embedded as the low 8 bits in the sequence
+// number in internal keys, we need to use the highest-numbered
+// ValueType, not the lowest).
+static const ValueType kValueTypeForSeek = kTypeValue;
+
+typedef uint64_t SequenceNumber;
+
+// We leave eight bits empty at the bottom so a type and sequence#
+// can be packed together into 64-bits.
+static const SequenceNumber kMaxSequenceNumber = ((0x1ull << 56) - 1);
+
+struct ParsedInternalKey {
+  Slice user_key;
+  SequenceNumber sequence;
+  ValueType type;
+
+  ParsedInternalKey() {}  // Intentionally left uninitialized (for speed)
+  ParsedInternalKey(const Slice& u, const SequenceNumber& seq, ValueType t)
+      : user_key(u), sequence(seq), type(t) {}
+  std::string DebugString() const;
+};
+
+// Return the length of the encoding of "key".
+inline size_t InternalKeyEncodingLength(const ParsedInternalKey& key) {
+  return key.user_key.size() + 8;
+}
+
+// Append the serialization of "key" to *result.
+void AppendInternalKey(std::string* result, const ParsedInternalKey& key);
+
+// Attempt to parse an internal key from "internal_key".  On success,
+// stores the parsed data in "*result", and returns true.
+//
+// On error, returns false, leaves "*result" in an undefined state.
+bool ParseInternalKey(const Slice& internal_key, ParsedInternalKey* result);
+
+// Returns the user key portion of an internal key.
+inline Slice ExtractUserKey(const Slice& internal_key) {
+  assert(internal_key.size() >= 8);
+  return Slice(internal_key.data(), internal_key.size() - 8);
+}
+
+// A comparator for internal keys that uses a specified comparator for
+// the user key portion and breaks ties by decreasing sequence number.
+class InternalKeyComparator : public Comparator {
+ private:
+  const Comparator* user_comparator_;
+
+ public:
+  explicit InternalKeyComparator(const Comparator* c) : user_comparator_(c) {}
+  virtual const char* Name() const;
+  virtual int Compare(const Slice& a, const Slice& b) const;
+  virtual void FindShortestSeparator(std::string* start,
+                                     const Slice& limit) const;
+  virtual void FindShortSuccessor(std::string* key) const;
+
+  const Comparator* user_comparator() const { return user_comparator_; }
+
+  int Compare(const InternalKey& a, const InternalKey& b) const;
+};
+
+// Filter policy wrapper that converts from internal keys to user keys
+class InternalFilterPolicy : public FilterPolicy {
+ private:
+  const FilterPolicy* const user_policy_;
+
+ public:
+  explicit InternalFilterPolicy(const FilterPolicy* p) : user_policy_(p) {}
+  virtual const char* Name() const;
+  virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const;
+  virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const;
+};
+
+// Modules in this directory should keep internal keys wrapped inside
+// the following class instead of plain strings so that we do not
+// incorrectly use string comparisons instead of an InternalKeyComparator.
+class InternalKey {
+ private:
+  std::string rep_;
+
+ public:
+  InternalKey() {}  // Leave rep_ as empty to indicate it is invalid
+  InternalKey(const Slice& user_key, SequenceNumber s, ValueType t) {
+    AppendInternalKey(&rep_, ParsedInternalKey(user_key, s, t));
+  }
+
+  void DecodeFrom(const Slice& s) { rep_.assign(s.data(), s.size()); }
+  Slice Encode() const {
+    assert(!rep_.empty());
+    return rep_;
+  }
+
+  Slice user_key() const { return ExtractUserKey(rep_); }
+
+  void SetFrom(const ParsedInternalKey& p) {
+    rep_.clear();
+    AppendInternalKey(&rep_, p);
+  }
+
+  void Clear() { rep_.clear(); }
+
+  std::string DebugString() const;
+};
+
+inline int InternalKeyComparator::Compare(const InternalKey& a,
+                                          const InternalKey& b) const {
+  return Compare(a.Encode(), b.Encode());
+}
+
+inline bool ParseInternalKey(const Slice& internal_key,
+                             ParsedInternalKey* result) {
+  const size_t n = internal_key.size();
+  if (n < 8) return false;
+  uint64_t num = DecodeFixed64(internal_key.data() + n - 8);
+  unsigned char c = num & 0xff;
+  result->sequence = num >> 8;
+  result->type = static_cast<ValueType>(c);
+  result->user_key = Slice(internal_key.data(), n - 8);
+  return (c <= static_cast<unsigned char>(kTypeValue));
+}
+
+// A helper class useful for DBImpl::Get()
+class LookupKey {
+ public:
+  // Initialize *this for looking up user_key at a snapshot with
+  // the specified sequence number.
+  LookupKey(const Slice& user_key, SequenceNumber sequence);
+
+  LookupKey(const LookupKey&) = delete;
+  LookupKey& operator=(const LookupKey&) = delete;
+
+  ~LookupKey();
+
+  // Return a key suitable for lookup in a MemTable.
+  Slice memtable_key() const { return Slice(start_, end_ - start_); }
+
+  // Return an internal key (suitable for passing to an internal iterator)
+  Slice internal_key() const { return Slice(kstart_, end_ - kstart_); }
+
+  // Return the user key
+  Slice user_key() const { return Slice(kstart_, end_ - kstart_ - 8); }
+
+ private:
+  // We construct a char array of the form:
+  //    klength  varint32               <-- start_
+  //    userkey  char[klength]          <-- kstart_
+  //    tag      uint64
+  //                                    <-- end_
+  // The array is a suitable MemTable key.
+  // The suffix starting with "userkey" can be used as an InternalKey.
+  const char* start_;
+  const char* kstart_;
+  const char* end_;
+  char space_[200];  // Avoid allocation for short keys
+};
+
+inline LookupKey::~LookupKey() {
+  if (start_ != space_) delete[] start_;
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_DBFORMAT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/dumpfile.cc b/ChattingApp 000/Pods/leveldb-library/db/dumpfile.cc
new file mode 100644
index 0000000..9d22d58
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/dumpfile.cc	
@@ -0,0 +1,232 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/dumpfile.h"
+
+#include <stdio.h>
+
+#include "db/dbformat.h"
+#include "db/filename.h"
+#include "db/log_reader.h"
+#include "db/version_edit.h"
+#include "db/write_batch_internal.h"
+#include "leveldb/env.h"
+#include "leveldb/iterator.h"
+#include "leveldb/options.h"
+#include "leveldb/status.h"
+#include "leveldb/table.h"
+#include "leveldb/write_batch.h"
+#include "util/logging.h"
+
+namespace leveldb {
+
+namespace {
+
+bool GuessType(const std::string& fname, FileType* type) {
+  size_t pos = fname.rfind('/');
+  std::string basename;
+  if (pos == std::string::npos) {
+    basename = fname;
+  } else {
+    basename = std::string(fname.data() + pos + 1, fname.size() - pos - 1);
+  }
+  uint64_t ignored;
+  return ParseFileName(basename, &ignored, type);
+}
+
+// Notified when log reader encounters corruption.
+class CorruptionReporter : public log::Reader::Reporter {
+ public:
+  virtual void Corruption(size_t bytes, const Status& status) {
+    std::string r = "corruption: ";
+    AppendNumberTo(&r, bytes);
+    r += " bytes; ";
+    r += status.ToString();
+    r.push_back('\n');
+    dst_->Append(r);
+  }
+
+  WritableFile* dst_;
+};
+
+// Print contents of a log file. (*func)() is called on every record.
+Status PrintLogContents(Env* env, const std::string& fname,
+                        void (*func)(uint64_t, Slice, WritableFile*),
+                        WritableFile* dst) {
+  SequentialFile* file;
+  Status s = env->NewSequentialFile(fname, &file);
+  if (!s.ok()) {
+    return s;
+  }
+  CorruptionReporter reporter;
+  reporter.dst_ = dst;
+  log::Reader reader(file, &reporter, true, 0);
+  Slice record;
+  std::string scratch;
+  while (reader.ReadRecord(&record, &scratch)) {
+    (*func)(reader.LastRecordOffset(), record, dst);
+  }
+  delete file;
+  return Status::OK();
+}
+
+// Called on every item found in a WriteBatch.
+class WriteBatchItemPrinter : public WriteBatch::Handler {
+ public:
+  virtual void Put(const Slice& key, const Slice& value) {
+    std::string r = "  put '";
+    AppendEscapedStringTo(&r, key);
+    r += "' '";
+    AppendEscapedStringTo(&r, value);
+    r += "'\n";
+    dst_->Append(r);
+  }
+  virtual void Delete(const Slice& key) {
+    std::string r = "  del '";
+    AppendEscapedStringTo(&r, key);
+    r += "'\n";
+    dst_->Append(r);
+  }
+
+  WritableFile* dst_;
+};
+
+// Called on every log record (each one of which is a WriteBatch)
+// found in a kLogFile.
+static void WriteBatchPrinter(uint64_t pos, Slice record, WritableFile* dst) {
+  std::string r = "--- offset ";
+  AppendNumberTo(&r, pos);
+  r += "; ";
+  if (record.size() < 12) {
+    r += "log record length ";
+    AppendNumberTo(&r, record.size());
+    r += " is too small\n";
+    dst->Append(r);
+    return;
+  }
+  WriteBatch batch;
+  WriteBatchInternal::SetContents(&batch, record);
+  r += "sequence ";
+  AppendNumberTo(&r, WriteBatchInternal::Sequence(&batch));
+  r.push_back('\n');
+  dst->Append(r);
+  WriteBatchItemPrinter batch_item_printer;
+  batch_item_printer.dst_ = dst;
+  Status s = batch.Iterate(&batch_item_printer);
+  if (!s.ok()) {
+    dst->Append("  error: " + s.ToString() + "\n");
+  }
+}
+
+Status DumpLog(Env* env, const std::string& fname, WritableFile* dst) {
+  return PrintLogContents(env, fname, WriteBatchPrinter, dst);
+}
+
+// Called on every log record (each one of which is a WriteBatch)
+// found in a kDescriptorFile.
+static void VersionEditPrinter(uint64_t pos, Slice record, WritableFile* dst) {
+  std::string r = "--- offset ";
+  AppendNumberTo(&r, pos);
+  r += "; ";
+  VersionEdit edit;
+  Status s = edit.DecodeFrom(record);
+  if (!s.ok()) {
+    r += s.ToString();
+    r.push_back('\n');
+  } else {
+    r += edit.DebugString();
+  }
+  dst->Append(r);
+}
+
+Status DumpDescriptor(Env* env, const std::string& fname, WritableFile* dst) {
+  return PrintLogContents(env, fname, VersionEditPrinter, dst);
+}
+
+Status DumpTable(Env* env, const std::string& fname, WritableFile* dst) {
+  uint64_t file_size;
+  RandomAccessFile* file = nullptr;
+  Table* table = nullptr;
+  Status s = env->GetFileSize(fname, &file_size);
+  if (s.ok()) {
+    s = env->NewRandomAccessFile(fname, &file);
+  }
+  if (s.ok()) {
+    // We use the default comparator, which may or may not match the
+    // comparator used in this database. However this should not cause
+    // problems since we only use Table operations that do not require
+    // any comparisons.  In particular, we do not call Seek or Prev.
+    s = Table::Open(Options(), file, file_size, &table);
+  }
+  if (!s.ok()) {
+    delete table;
+    delete file;
+    return s;
+  }
+
+  ReadOptions ro;
+  ro.fill_cache = false;
+  Iterator* iter = table->NewIterator(ro);
+  std::string r;
+  for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
+    r.clear();
+    ParsedInternalKey key;
+    if (!ParseInternalKey(iter->key(), &key)) {
+      r = "badkey '";
+      AppendEscapedStringTo(&r, iter->key());
+      r += "' => '";
+      AppendEscapedStringTo(&r, iter->value());
+      r += "'\n";
+      dst->Append(r);
+    } else {
+      r = "'";
+      AppendEscapedStringTo(&r, key.user_key);
+      r += "' @ ";
+      AppendNumberTo(&r, key.sequence);
+      r += " : ";
+      if (key.type == kTypeDeletion) {
+        r += "del";
+      } else if (key.type == kTypeValue) {
+        r += "val";
+      } else {
+        AppendNumberTo(&r, key.type);
+      }
+      r += " => '";
+      AppendEscapedStringTo(&r, iter->value());
+      r += "'\n";
+      dst->Append(r);
+    }
+  }
+  s = iter->status();
+  if (!s.ok()) {
+    dst->Append("iterator error: " + s.ToString() + "\n");
+  }
+
+  delete iter;
+  delete table;
+  delete file;
+  return Status::OK();
+}
+
+}  // namespace
+
+Status DumpFile(Env* env, const std::string& fname, WritableFile* dst) {
+  FileType ftype;
+  if (!GuessType(fname, &ftype)) {
+    return Status::InvalidArgument(fname + ": unknown file type");
+  }
+  switch (ftype) {
+    case kLogFile:
+      return DumpLog(env, fname, dst);
+    case kDescriptorFile:
+      return DumpDescriptor(env, fname, dst);
+    case kTableFile:
+      return DumpTable(env, fname, dst);
+    default:
+      break;
+  }
+  return Status::InvalidArgument(fname + ": not a dump-able file type");
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/filename.cc b/ChattingApp 000/Pods/leveldb-library/db/filename.cc
new file mode 100644
index 0000000..85de45c
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/filename.cc	
@@ -0,0 +1,141 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/filename.h"
+
+#include <ctype.h>
+#include <stdio.h>
+
+#include "db/dbformat.h"
+#include "leveldb/env.h"
+#include "util/logging.h"
+
+namespace leveldb {
+
+// A utility routine: write "data" to the named file and Sync() it.
+Status WriteStringToFileSync(Env* env, const Slice& data,
+                             const std::string& fname);
+
+static std::string MakeFileName(const std::string& dbname, uint64_t number,
+                                const char* suffix) {
+  char buf[100];
+  snprintf(buf, sizeof(buf), "/%06llu.%s",
+           static_cast<unsigned long long>(number), suffix);
+  return dbname + buf;
+}
+
+std::string LogFileName(const std::string& dbname, uint64_t number) {
+  assert(number > 0);
+  return MakeFileName(dbname, number, "log");
+}
+
+std::string TableFileName(const std::string& dbname, uint64_t number) {
+  assert(number > 0);
+  return MakeFileName(dbname, number, "ldb");
+}
+
+std::string SSTTableFileName(const std::string& dbname, uint64_t number) {
+  assert(number > 0);
+  return MakeFileName(dbname, number, "sst");
+}
+
+std::string DescriptorFileName(const std::string& dbname, uint64_t number) {
+  assert(number > 0);
+  char buf[100];
+  snprintf(buf, sizeof(buf), "/MANIFEST-%06llu",
+           static_cast<unsigned long long>(number));
+  return dbname + buf;
+}
+
+std::string CurrentFileName(const std::string& dbname) {
+  return dbname + "/CURRENT";
+}
+
+std::string LockFileName(const std::string& dbname) { return dbname + "/LOCK"; }
+
+std::string TempFileName(const std::string& dbname, uint64_t number) {
+  assert(number > 0);
+  return MakeFileName(dbname, number, "dbtmp");
+}
+
+std::string InfoLogFileName(const std::string& dbname) {
+  return dbname + "/LOG";
+}
+
+// Return the name of the old info log file for "dbname".
+std::string OldInfoLogFileName(const std::string& dbname) {
+  return dbname + "/LOG.old";
+}
+
+// Owned filenames have the form:
+//    dbname/CURRENT
+//    dbname/LOCK
+//    dbname/LOG
+//    dbname/LOG.old
+//    dbname/MANIFEST-[0-9]+
+//    dbname/[0-9]+.(log|sst|ldb)
+bool ParseFileName(const std::string& filename, uint64_t* number,
+                   FileType* type) {
+  Slice rest(filename);
+  if (rest == "CURRENT") {
+    *number = 0;
+    *type = kCurrentFile;
+  } else if (rest == "LOCK") {
+    *number = 0;
+    *type = kDBLockFile;
+  } else if (rest == "LOG" || rest == "LOG.old") {
+    *number = 0;
+    *type = kInfoLogFile;
+  } else if (rest.starts_with("MANIFEST-")) {
+    rest.remove_prefix(strlen("MANIFEST-"));
+    uint64_t num;
+    if (!ConsumeDecimalNumber(&rest, &num)) {
+      return false;
+    }
+    if (!rest.empty()) {
+      return false;
+    }
+    *type = kDescriptorFile;
+    *number = num;
+  } else {
+    // Avoid strtoull() to keep filename format independent of the
+    // current locale
+    uint64_t num;
+    if (!ConsumeDecimalNumber(&rest, &num)) {
+      return false;
+    }
+    Slice suffix = rest;
+    if (suffix == Slice(".log")) {
+      *type = kLogFile;
+    } else if (suffix == Slice(".sst") || suffix == Slice(".ldb")) {
+      *type = kTableFile;
+    } else if (suffix == Slice(".dbtmp")) {
+      *type = kTempFile;
+    } else {
+      return false;
+    }
+    *number = num;
+  }
+  return true;
+}
+
+Status SetCurrentFile(Env* env, const std::string& dbname,
+                      uint64_t descriptor_number) {
+  // Remove leading "dbname/" and add newline to manifest file name
+  std::string manifest = DescriptorFileName(dbname, descriptor_number);
+  Slice contents = manifest;
+  assert(contents.starts_with(dbname + "/"));
+  contents.remove_prefix(dbname.size() + 1);
+  std::string tmp = TempFileName(dbname, descriptor_number);
+  Status s = WriteStringToFileSync(env, contents.ToString() + "\n", tmp);
+  if (s.ok()) {
+    s = env->RenameFile(tmp, CurrentFileName(dbname));
+  }
+  if (!s.ok()) {
+    env->DeleteFile(tmp);
+  }
+  return s;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/filename.h b/ChattingApp 000/Pods/leveldb-library/db/filename.h
new file mode 100644
index 0000000..524e813
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/filename.h	
@@ -0,0 +1,84 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// File names used by DB code
+
+#ifndef STORAGE_LEVELDB_DB_FILENAME_H_
+#define STORAGE_LEVELDB_DB_FILENAME_H_
+
+#include <stdint.h>
+
+#include <string>
+
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+#include "port/port.h"
+
+namespace leveldb {
+
+class Env;
+
+enum FileType {
+  kLogFile,
+  kDBLockFile,
+  kTableFile,
+  kDescriptorFile,
+  kCurrentFile,
+  kTempFile,
+  kInfoLogFile  // Either the current one, or an old one
+};
+
+// Return the name of the log file with the specified number
+// in the db named by "dbname".  The result will be prefixed with
+// "dbname".
+std::string LogFileName(const std::string& dbname, uint64_t number);
+
+// Return the name of the sstable with the specified number
+// in the db named by "dbname".  The result will be prefixed with
+// "dbname".
+std::string TableFileName(const std::string& dbname, uint64_t number);
+
+// Return the legacy file name for an sstable with the specified number
+// in the db named by "dbname". The result will be prefixed with
+// "dbname".
+std::string SSTTableFileName(const std::string& dbname, uint64_t number);
+
+// Return the name of the descriptor file for the db named by
+// "dbname" and the specified incarnation number.  The result will be
+// prefixed with "dbname".
+std::string DescriptorFileName(const std::string& dbname, uint64_t number);
+
+// Return the name of the current file.  This file contains the name
+// of the current manifest file.  The result will be prefixed with
+// "dbname".
+std::string CurrentFileName(const std::string& dbname);
+
+// Return the name of the lock file for the db named by
+// "dbname".  The result will be prefixed with "dbname".
+std::string LockFileName(const std::string& dbname);
+
+// Return the name of a temporary file owned by the db named "dbname".
+// The result will be prefixed with "dbname".
+std::string TempFileName(const std::string& dbname, uint64_t number);
+
+// Return the name of the info log file for "dbname".
+std::string InfoLogFileName(const std::string& dbname);
+
+// Return the name of the old info log file for "dbname".
+std::string OldInfoLogFileName(const std::string& dbname);
+
+// If filename is a leveldb file, store the type of the file in *type.
+// The number encoded in the filename is stored in *number.  If the
+// filename was successfully parsed, returns true.  Else return false.
+bool ParseFileName(const std::string& filename, uint64_t* number,
+                   FileType* type);
+
+// Make the CURRENT file point to the descriptor file with the
+// specified number.
+Status SetCurrentFile(Env* env, const std::string& dbname,
+                      uint64_t descriptor_number);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_FILENAME_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/log_format.h b/ChattingApp 000/Pods/leveldb-library/db/log_format.h
new file mode 100644
index 0000000..356e69f
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/log_format.h	
@@ -0,0 +1,35 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Log format information shared by reader and writer.
+// See ../doc/log_format.md for more detail.
+
+#ifndef STORAGE_LEVELDB_DB_LOG_FORMAT_H_
+#define STORAGE_LEVELDB_DB_LOG_FORMAT_H_
+
+namespace leveldb {
+namespace log {
+
+enum RecordType {
+  // Zero is reserved for preallocated files
+  kZeroType = 0,
+
+  kFullType = 1,
+
+  // For fragments
+  kFirstType = 2,
+  kMiddleType = 3,
+  kLastType = 4
+};
+static const int kMaxRecordType = kLastType;
+
+static const int kBlockSize = 32768;
+
+// Header is checksum (4 bytes), length (2 bytes), type (1 byte).
+static const int kHeaderSize = 4 + 2 + 1;
+
+}  // namespace log
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_LOG_FORMAT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/log_reader.cc b/ChattingApp 000/Pods/leveldb-library/db/log_reader.cc
new file mode 100644
index 0000000..f472723
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/log_reader.cc	
@@ -0,0 +1,274 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/log_reader.h"
+
+#include <stdio.h>
+
+#include "leveldb/env.h"
+#include "util/coding.h"
+#include "util/crc32c.h"
+
+namespace leveldb {
+namespace log {
+
+Reader::Reporter::~Reporter() {}
+
+Reader::Reader(SequentialFile* file, Reporter* reporter, bool checksum,
+               uint64_t initial_offset)
+    : file_(file),
+      reporter_(reporter),
+      checksum_(checksum),
+      backing_store_(new char[kBlockSize]),
+      buffer_(),
+      eof_(false),
+      last_record_offset_(0),
+      end_of_buffer_offset_(0),
+      initial_offset_(initial_offset),
+      resyncing_(initial_offset > 0) {}
+
+Reader::~Reader() { delete[] backing_store_; }
+
+bool Reader::SkipToInitialBlock() {
+  const size_t offset_in_block = initial_offset_ % kBlockSize;
+  uint64_t block_start_location = initial_offset_ - offset_in_block;
+
+  // Don't search a block if we'd be in the trailer
+  if (offset_in_block > kBlockSize - 6) {
+    block_start_location += kBlockSize;
+  }
+
+  end_of_buffer_offset_ = block_start_location;
+
+  // Skip to start of first block that can contain the initial record
+  if (block_start_location > 0) {
+    Status skip_status = file_->Skip(block_start_location);
+    if (!skip_status.ok()) {
+      ReportDrop(block_start_location, skip_status);
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool Reader::ReadRecord(Slice* record, std::string* scratch) {
+  if (last_record_offset_ < initial_offset_) {
+    if (!SkipToInitialBlock()) {
+      return false;
+    }
+  }
+
+  scratch->clear();
+  record->clear();
+  bool in_fragmented_record = false;
+  // Record offset of the logical record that we're reading
+  // 0 is a dummy value to make compilers happy
+  uint64_t prospective_record_offset = 0;
+
+  Slice fragment;
+  while (true) {
+    const unsigned int record_type = ReadPhysicalRecord(&fragment);
+
+    // ReadPhysicalRecord may have only had an empty trailer remaining in its
+    // internal buffer. Calculate the offset of the next physical record now
+    // that it has returned, properly accounting for its header size.
+    uint64_t physical_record_offset =
+        end_of_buffer_offset_ - buffer_.size() - kHeaderSize - fragment.size();
+
+    if (resyncing_) {
+      if (record_type == kMiddleType) {
+        continue;
+      } else if (record_type == kLastType) {
+        resyncing_ = false;
+        continue;
+      } else {
+        resyncing_ = false;
+      }
+    }
+
+    switch (record_type) {
+      case kFullType:
+        if (in_fragmented_record) {
+          // Handle bug in earlier versions of log::Writer where
+          // it could emit an empty kFirstType record at the tail end
+          // of a block followed by a kFullType or kFirstType record
+          // at the beginning of the next block.
+          if (!scratch->empty()) {
+            ReportCorruption(scratch->size(), "partial record without end(1)");
+          }
+        }
+        prospective_record_offset = physical_record_offset;
+        scratch->clear();
+        *record = fragment;
+        last_record_offset_ = prospective_record_offset;
+        return true;
+
+      case kFirstType:
+        if (in_fragmented_record) {
+          // Handle bug in earlier versions of log::Writer where
+          // it could emit an empty kFirstType record at the tail end
+          // of a block followed by a kFullType or kFirstType record
+          // at the beginning of the next block.
+          if (!scratch->empty()) {
+            ReportCorruption(scratch->size(), "partial record without end(2)");
+          }
+        }
+        prospective_record_offset = physical_record_offset;
+        scratch->assign(fragment.data(), fragment.size());
+        in_fragmented_record = true;
+        break;
+
+      case kMiddleType:
+        if (!in_fragmented_record) {
+          ReportCorruption(fragment.size(),
+                           "missing start of fragmented record(1)");
+        } else {
+          scratch->append(fragment.data(), fragment.size());
+        }
+        break;
+
+      case kLastType:
+        if (!in_fragmented_record) {
+          ReportCorruption(fragment.size(),
+                           "missing start of fragmented record(2)");
+        } else {
+          scratch->append(fragment.data(), fragment.size());
+          *record = Slice(*scratch);
+          last_record_offset_ = prospective_record_offset;
+          return true;
+        }
+        break;
+
+      case kEof:
+        if (in_fragmented_record) {
+          // This can be caused by the writer dying immediately after
+          // writing a physical record but before completing the next; don't
+          // treat it as a corruption, just ignore the entire logical record.
+          scratch->clear();
+        }
+        return false;
+
+      case kBadRecord:
+        if (in_fragmented_record) {
+          ReportCorruption(scratch->size(), "error in middle of record");
+          in_fragmented_record = false;
+          scratch->clear();
+        }
+        break;
+
+      default: {
+        char buf[40];
+        snprintf(buf, sizeof(buf), "unknown record type %u", record_type);
+        ReportCorruption(
+            (fragment.size() + (in_fragmented_record ? scratch->size() : 0)),
+            buf);
+        in_fragmented_record = false;
+        scratch->clear();
+        break;
+      }
+    }
+  }
+  return false;
+}
+
+uint64_t Reader::LastRecordOffset() { return last_record_offset_; }
+
+void Reader::ReportCorruption(uint64_t bytes, const char* reason) {
+  ReportDrop(bytes, Status::Corruption(reason));
+}
+
+void Reader::ReportDrop(uint64_t bytes, const Status& reason) {
+  if (reporter_ != nullptr &&
+      end_of_buffer_offset_ - buffer_.size() - bytes >= initial_offset_) {
+    reporter_->Corruption(static_cast<size_t>(bytes), reason);
+  }
+}
+
+unsigned int Reader::ReadPhysicalRecord(Slice* result) {
+  while (true) {
+    if (buffer_.size() < kHeaderSize) {
+      if (!eof_) {
+        // Last read was a full read, so this is a trailer to skip
+        buffer_.clear();
+        Status status = file_->Read(kBlockSize, &buffer_, backing_store_);
+        end_of_buffer_offset_ += buffer_.size();
+        if (!status.ok()) {
+          buffer_.clear();
+          ReportDrop(kBlockSize, status);
+          eof_ = true;
+          return kEof;
+        } else if (buffer_.size() < kBlockSize) {
+          eof_ = true;
+        }
+        continue;
+      } else {
+        // Note that if buffer_ is non-empty, we have a truncated header at the
+        // end of the file, which can be caused by the writer crashing in the
+        // middle of writing the header. Instead of considering this an error,
+        // just report EOF.
+        buffer_.clear();
+        return kEof;
+      }
+    }
+
+    // Parse the header
+    const char* header = buffer_.data();
+    const uint32_t a = static_cast<uint32_t>(header[4]) & 0xff;
+    const uint32_t b = static_cast<uint32_t>(header[5]) & 0xff;
+    const unsigned int type = header[6];
+    const uint32_t length = a | (b << 8);
+    if (kHeaderSize + length > buffer_.size()) {
+      size_t drop_size = buffer_.size();
+      buffer_.clear();
+      if (!eof_) {
+        ReportCorruption(drop_size, "bad record length");
+        return kBadRecord;
+      }
+      // If the end of the file has been reached without reading |length| bytes
+      // of payload, assume the writer died in the middle of writing the record.
+      // Don't report a corruption.
+      return kEof;
+    }
+
+    if (type == kZeroType && length == 0) {
+      // Skip zero length record without reporting any drops since
+      // such records are produced by the mmap based writing code in
+      // env_posix.cc that preallocates file regions.
+      buffer_.clear();
+      return kBadRecord;
+    }
+
+    // Check crc
+    if (checksum_) {
+      uint32_t expected_crc = crc32c::Unmask(DecodeFixed32(header));
+      uint32_t actual_crc = crc32c::Value(header + 6, 1 + length);
+      if (actual_crc != expected_crc) {
+        // Drop the rest of the buffer since "length" itself may have
+        // been corrupted and if we trust it, we could find some
+        // fragment of a real log record that just happens to look
+        // like a valid log record.
+        size_t drop_size = buffer_.size();
+        buffer_.clear();
+        ReportCorruption(drop_size, "checksum mismatch");
+        return kBadRecord;
+      }
+    }
+
+    buffer_.remove_prefix(kHeaderSize + length);
+
+    // Skip physical record that started before initial_offset_
+    if (end_of_buffer_offset_ - buffer_.size() - kHeaderSize - length <
+        initial_offset_) {
+      result->clear();
+      return kBadRecord;
+    }
+
+    *result = Slice(header + kHeaderSize, length);
+    return type;
+  }
+}
+
+}  // namespace log
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/log_reader.h b/ChattingApp 000/Pods/leveldb-library/db/log_reader.h
new file mode 100644
index 0000000..001da89
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/log_reader.h	
@@ -0,0 +1,112 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_LOG_READER_H_
+#define STORAGE_LEVELDB_DB_LOG_READER_H_
+
+#include <stdint.h>
+
+#include "db/log_format.h"
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+class SequentialFile;
+
+namespace log {
+
+class Reader {
+ public:
+  // Interface for reporting errors.
+  class Reporter {
+   public:
+    virtual ~Reporter();
+
+    // Some corruption was detected.  "size" is the approximate number
+    // of bytes dropped due to the corruption.
+    virtual void Corruption(size_t bytes, const Status& status) = 0;
+  };
+
+  // Create a reader that will return log records from "*file".
+  // "*file" must remain live while this Reader is in use.
+  //
+  // If "reporter" is non-null, it is notified whenever some data is
+  // dropped due to a detected corruption.  "*reporter" must remain
+  // live while this Reader is in use.
+  //
+  // If "checksum" is true, verify checksums if available.
+  //
+  // The Reader will start reading at the first record located at physical
+  // position >= initial_offset within the file.
+  Reader(SequentialFile* file, Reporter* reporter, bool checksum,
+         uint64_t initial_offset);
+
+  Reader(const Reader&) = delete;
+  Reader& operator=(const Reader&) = delete;
+
+  ~Reader();
+
+  // Read the next record into *record.  Returns true if read
+  // successfully, false if we hit end of the input.  May use
+  // "*scratch" as temporary storage.  The contents filled in *record
+  // will only be valid until the next mutating operation on this
+  // reader or the next mutation to *scratch.
+  bool ReadRecord(Slice* record, std::string* scratch);
+
+  // Returns the physical offset of the last record returned by ReadRecord.
+  //
+  // Undefined before the first call to ReadRecord.
+  uint64_t LastRecordOffset();
+
+ private:
+  // Extend record types with the following special values
+  enum {
+    kEof = kMaxRecordType + 1,
+    // Returned whenever we find an invalid physical record.
+    // Currently there are three situations in which this happens:
+    // * The record has an invalid CRC (ReadPhysicalRecord reports a drop)
+    // * The record is a 0-length record (No drop is reported)
+    // * The record is below constructor's initial_offset (No drop is reported)
+    kBadRecord = kMaxRecordType + 2
+  };
+
+  // Skips all blocks that are completely before "initial_offset_".
+  //
+  // Returns true on success. Handles reporting.
+  bool SkipToInitialBlock();
+
+  // Return type, or one of the preceding special values
+  unsigned int ReadPhysicalRecord(Slice* result);
+
+  // Reports dropped bytes to the reporter.
+  // buffer_ must be updated to remove the dropped bytes prior to invocation.
+  void ReportCorruption(uint64_t bytes, const char* reason);
+  void ReportDrop(uint64_t bytes, const Status& reason);
+
+  SequentialFile* const file_;
+  Reporter* const reporter_;
+  bool const checksum_;
+  char* const backing_store_;
+  Slice buffer_;
+  bool eof_;  // Last Read() indicated EOF by returning < kBlockSize
+
+  // Offset of the last record returned by ReadRecord.
+  uint64_t last_record_offset_;
+  // Offset of the first location past the end of buffer_.
+  uint64_t end_of_buffer_offset_;
+
+  // Offset at which to start looking for the first record to return
+  uint64_t const initial_offset_;
+
+  // True if we are resynchronizing after a seek (initial_offset_ > 0). In
+  // particular, a run of kMiddleType and kLastType records can be silently
+  // skipped in this mode
+  bool resyncing_;
+};
+
+}  // namespace log
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_LOG_READER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/log_writer.cc b/ChattingApp 000/Pods/leveldb-library/db/log_writer.cc
new file mode 100644
index 0000000..5e83f6a
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/log_writer.cc	
@@ -0,0 +1,111 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/log_writer.h"
+
+#include <stdint.h>
+
+#include "leveldb/env.h"
+#include "util/coding.h"
+#include "util/crc32c.h"
+
+namespace leveldb {
+namespace log {
+
+static void InitTypeCrc(uint32_t* type_crc) {
+  for (int i = 0; i <= kMaxRecordType; i++) {
+    char t = static_cast<char>(i);
+    type_crc[i] = crc32c::Value(&t, 1);
+  }
+}
+
+Writer::Writer(WritableFile* dest) : dest_(dest), block_offset_(0) {
+  InitTypeCrc(type_crc_);
+}
+
+Writer::Writer(WritableFile* dest, uint64_t dest_length)
+    : dest_(dest), block_offset_(dest_length % kBlockSize) {
+  InitTypeCrc(type_crc_);
+}
+
+Writer::~Writer() {}
+
+Status Writer::AddRecord(const Slice& slice) {
+  const char* ptr = slice.data();
+  size_t left = slice.size();
+
+  // Fragment the record if necessary and emit it.  Note that if slice
+  // is empty, we still want to iterate once to emit a single
+  // zero-length record
+  Status s;
+  bool begin = true;
+  do {
+    const int leftover = kBlockSize - block_offset_;
+    assert(leftover >= 0);
+    if (leftover < kHeaderSize) {
+      // Switch to a new block
+      if (leftover > 0) {
+        // Fill the trailer (literal below relies on kHeaderSize being 7)
+        static_assert(kHeaderSize == 7, "");
+        dest_->Append(Slice("\x00\x00\x00\x00\x00\x00", leftover));
+      }
+      block_offset_ = 0;
+    }
+
+    // Invariant: we never leave < kHeaderSize bytes in a block.
+    assert(kBlockSize - block_offset_ - kHeaderSize >= 0);
+
+    const size_t avail = kBlockSize - block_offset_ - kHeaderSize;
+    const size_t fragment_length = (left < avail) ? left : avail;
+
+    RecordType type;
+    const bool end = (left == fragment_length);
+    if (begin && end) {
+      type = kFullType;
+    } else if (begin) {
+      type = kFirstType;
+    } else if (end) {
+      type = kLastType;
+    } else {
+      type = kMiddleType;
+    }
+
+    s = EmitPhysicalRecord(type, ptr, fragment_length);
+    ptr += fragment_length;
+    left -= fragment_length;
+    begin = false;
+  } while (s.ok() && left > 0);
+  return s;
+}
+
+Status Writer::EmitPhysicalRecord(RecordType t, const char* ptr,
+                                  size_t length) {
+  assert(length <= 0xffff);  // Must fit in two bytes
+  assert(block_offset_ + kHeaderSize + length <= kBlockSize);
+
+  // Format the header
+  char buf[kHeaderSize];
+  buf[4] = static_cast<char>(length & 0xff);
+  buf[5] = static_cast<char>(length >> 8);
+  buf[6] = static_cast<char>(t);
+
+  // Compute the crc of the record type and the payload.
+  uint32_t crc = crc32c::Extend(type_crc_[t], ptr, length);
+  crc = crc32c::Mask(crc);  // Adjust for storage
+  EncodeFixed32(buf, crc);
+
+  // Write the header and the payload
+  Status s = dest_->Append(Slice(buf, kHeaderSize));
+  if (s.ok()) {
+    s = dest_->Append(Slice(ptr, length));
+    if (s.ok()) {
+      s = dest_->Flush();
+    }
+  }
+  block_offset_ += kHeaderSize + length;
+  return s;
+}
+
+}  // namespace log
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/log_writer.h b/ChattingApp 000/Pods/leveldb-library/db/log_writer.h
new file mode 100644
index 0000000..c0a2114
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/log_writer.h	
@@ -0,0 +1,54 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_LOG_WRITER_H_
+#define STORAGE_LEVELDB_DB_LOG_WRITER_H_
+
+#include <stdint.h>
+
+#include "db/log_format.h"
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+class WritableFile;
+
+namespace log {
+
+class Writer {
+ public:
+  // Create a writer that will append data to "*dest".
+  // "*dest" must be initially empty.
+  // "*dest" must remain live while this Writer is in use.
+  explicit Writer(WritableFile* dest);
+
+  // Create a writer that will append data to "*dest".
+  // "*dest" must have initial length "dest_length".
+  // "*dest" must remain live while this Writer is in use.
+  Writer(WritableFile* dest, uint64_t dest_length);
+
+  Writer(const Writer&) = delete;
+  Writer& operator=(const Writer&) = delete;
+
+  ~Writer();
+
+  Status AddRecord(const Slice& slice);
+
+ private:
+  Status EmitPhysicalRecord(RecordType type, const char* ptr, size_t length);
+
+  WritableFile* dest_;
+  int block_offset_;  // Current offset in block
+
+  // crc32c values for all supported record types.  These are
+  // pre-computed to reduce the overhead of computing the crc of the
+  // record type stored in the header.
+  uint32_t type_crc_[kMaxRecordType + 1];
+};
+
+}  // namespace log
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_LOG_WRITER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/memtable.cc b/ChattingApp 000/Pods/leveldb-library/db/memtable.cc
new file mode 100644
index 0000000..c91405c
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/memtable.cc	
@@ -0,0 +1,136 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/memtable.h"
+#include "db/dbformat.h"
+#include "leveldb/comparator.h"
+#include "leveldb/env.h"
+#include "leveldb/iterator.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+static Slice GetLengthPrefixedSlice(const char* data) {
+  uint32_t len;
+  const char* p = data;
+  p = GetVarint32Ptr(p, p + 5, &len);  // +5: we assume "p" is not corrupted
+  return Slice(p, len);
+}
+
+MemTable::MemTable(const InternalKeyComparator& comparator)
+    : comparator_(comparator), refs_(0), table_(comparator_, &arena_) {}
+
+MemTable::~MemTable() { assert(refs_ == 0); }
+
+size_t MemTable::ApproximateMemoryUsage() { return arena_.MemoryUsage(); }
+
+int MemTable::KeyComparator::operator()(const char* aptr,
+                                        const char* bptr) const {
+  // Internal keys are encoded as length-prefixed strings.
+  Slice a = GetLengthPrefixedSlice(aptr);
+  Slice b = GetLengthPrefixedSlice(bptr);
+  return comparator.Compare(a, b);
+}
+
+// Encode a suitable internal key target for "target" and return it.
+// Uses *scratch as scratch space, and the returned pointer will point
+// into this scratch space.
+static const char* EncodeKey(std::string* scratch, const Slice& target) {
+  scratch->clear();
+  PutVarint32(scratch, target.size());
+  scratch->append(target.data(), target.size());
+  return scratch->data();
+}
+
+class MemTableIterator : public Iterator {
+ public:
+  explicit MemTableIterator(MemTable::Table* table) : iter_(table) {}
+
+  virtual bool Valid() const { return iter_.Valid(); }
+  virtual void Seek(const Slice& k) { iter_.Seek(EncodeKey(&tmp_, k)); }
+  virtual void SeekToFirst() { iter_.SeekToFirst(); }
+  virtual void SeekToLast() { iter_.SeekToLast(); }
+  virtual void Next() { iter_.Next(); }
+  virtual void Prev() { iter_.Prev(); }
+  virtual Slice key() const { return GetLengthPrefixedSlice(iter_.key()); }
+  virtual Slice value() const {
+    Slice key_slice = GetLengthPrefixedSlice(iter_.key());
+    return GetLengthPrefixedSlice(key_slice.data() + key_slice.size());
+  }
+
+  virtual Status status() const { return Status::OK(); }
+
+ private:
+  MemTable::Table::Iterator iter_;
+  std::string tmp_;  // For passing to EncodeKey
+
+  // No copying allowed
+  MemTableIterator(const MemTableIterator&);
+  void operator=(const MemTableIterator&);
+};
+
+Iterator* MemTable::NewIterator() { return new MemTableIterator(&table_); }
+
+void MemTable::Add(SequenceNumber s, ValueType type, const Slice& key,
+                   const Slice& value) {
+  // Format of an entry is concatenation of:
+  //  key_size     : varint32 of internal_key.size()
+  //  key bytes    : char[internal_key.size()]
+  //  value_size   : varint32 of value.size()
+  //  value bytes  : char[value.size()]
+  size_t key_size = key.size();
+  size_t val_size = value.size();
+  size_t internal_key_size = key_size + 8;
+  const size_t encoded_len = VarintLength(internal_key_size) +
+                             internal_key_size + VarintLength(val_size) +
+                             val_size;
+  char* buf = arena_.Allocate(encoded_len);
+  char* p = EncodeVarint32(buf, internal_key_size);
+  memcpy(p, key.data(), key_size);
+  p += key_size;
+  EncodeFixed64(p, (s << 8) | type);
+  p += 8;
+  p = EncodeVarint32(p, val_size);
+  memcpy(p, value.data(), val_size);
+  assert(p + val_size == buf + encoded_len);
+  table_.Insert(buf);
+}
+
+bool MemTable::Get(const LookupKey& key, std::string* value, Status* s) {
+  Slice memkey = key.memtable_key();
+  Table::Iterator iter(&table_);
+  iter.Seek(memkey.data());
+  if (iter.Valid()) {
+    // entry format is:
+    //    klength  varint32
+    //    userkey  char[klength]
+    //    tag      uint64
+    //    vlength  varint32
+    //    value    char[vlength]
+    // Check that it belongs to same user key.  We do not check the
+    // sequence number since the Seek() call above should have skipped
+    // all entries with overly large sequence numbers.
+    const char* entry = iter.key();
+    uint32_t key_length;
+    const char* key_ptr = GetVarint32Ptr(entry, entry + 5, &key_length);
+    if (comparator_.comparator.user_comparator()->Compare(
+            Slice(key_ptr, key_length - 8), key.user_key()) == 0) {
+      // Correct user key
+      const uint64_t tag = DecodeFixed64(key_ptr + key_length - 8);
+      switch (static_cast<ValueType>(tag & 0xff)) {
+        case kTypeValue: {
+          Slice v = GetLengthPrefixedSlice(key_ptr + key_length);
+          value->assign(v.data(), v.size());
+          return true;
+        }
+        case kTypeDeletion:
+          *s = Status::NotFound(Slice());
+          return true;
+      }
+    }
+  }
+  return false;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/memtable.h b/ChattingApp 000/Pods/leveldb-library/db/memtable.h
new file mode 100644
index 0000000..9d986b1
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/memtable.h	
@@ -0,0 +1,87 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_MEMTABLE_H_
+#define STORAGE_LEVELDB_DB_MEMTABLE_H_
+
+#include <string>
+
+#include "db/dbformat.h"
+#include "db/skiplist.h"
+#include "leveldb/db.h"
+#include "util/arena.h"
+
+namespace leveldb {
+
+class InternalKeyComparator;
+class MemTableIterator;
+
+class MemTable {
+ public:
+  // MemTables are reference counted.  The initial reference count
+  // is zero and the caller must call Ref() at least once.
+  explicit MemTable(const InternalKeyComparator& comparator);
+
+  MemTable(const MemTable&) = delete;
+  MemTable& operator=(const MemTable&) = delete;
+
+  // Increase reference count.
+  void Ref() { ++refs_; }
+
+  // Drop reference count.  Delete if no more references exist.
+  void Unref() {
+    --refs_;
+    assert(refs_ >= 0);
+    if (refs_ <= 0) {
+      delete this;
+    }
+  }
+
+  // Returns an estimate of the number of bytes of data in use by this
+  // data structure. It is safe to call when MemTable is being modified.
+  size_t ApproximateMemoryUsage();
+
+  // Return an iterator that yields the contents of the memtable.
+  //
+  // The caller must ensure that the underlying MemTable remains live
+  // while the returned iterator is live.  The keys returned by this
+  // iterator are internal keys encoded by AppendInternalKey in the
+  // db/format.{h,cc} module.
+  Iterator* NewIterator();
+
+  // Add an entry into memtable that maps key to value at the
+  // specified sequence number and with the specified type.
+  // Typically value will be empty if type==kTypeDeletion.
+  void Add(SequenceNumber seq, ValueType type, const Slice& key,
+           const Slice& value);
+
+  // If memtable contains a value for key, store it in *value and return true.
+  // If memtable contains a deletion for key, store a NotFound() error
+  // in *status and return true.
+  // Else, return false.
+  bool Get(const LookupKey& key, std::string* value, Status* s);
+
+ private:
+  friend class MemTableIterator;
+  friend class MemTableBackwardIterator;
+
+  struct KeyComparator {
+    const InternalKeyComparator comparator;
+    explicit KeyComparator(const InternalKeyComparator& c) : comparator(c) {}
+    int operator()(const char* a, const char* b) const;
+  };
+
+  typedef SkipList<const char*, KeyComparator> Table;
+
+  ~MemTable();  // Private since only Unref() should be used to delete it
+
+  KeyComparator comparator_;
+  int refs_;
+  Arena arena_;
+  Table table_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_MEMTABLE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/repair.cc b/ChattingApp 000/Pods/leveldb-library/db/repair.cc
new file mode 100644
index 0000000..3c676ca
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/repair.cc	
@@ -0,0 +1,450 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// We recover the contents of the descriptor from the other files we find.
+// (1) Any log files are first converted to tables
+// (2) We scan every table to compute
+//     (a) smallest/largest for the table
+//     (b) largest sequence number in the table
+// (3) We generate descriptor contents:
+//      - log number is set to zero
+//      - next-file-number is set to 1 + largest file number we found
+//      - last-sequence-number is set to largest sequence# found across
+//        all tables (see 2c)
+//      - compaction pointers are cleared
+//      - every table file is added at level 0
+//
+// Possible optimization 1:
+//   (a) Compute total size and use to pick appropriate max-level M
+//   (b) Sort tables by largest sequence# in the table
+//   (c) For each table: if it overlaps earlier table, place in level-0,
+//       else place in level-M.
+// Possible optimization 2:
+//   Store per-table metadata (smallest, largest, largest-seq#, ...)
+//   in the table's meta section to speed up ScanTable.
+
+#include "db/builder.h"
+#include "db/db_impl.h"
+#include "db/dbformat.h"
+#include "db/filename.h"
+#include "db/log_reader.h"
+#include "db/log_writer.h"
+#include "db/memtable.h"
+#include "db/table_cache.h"
+#include "db/version_edit.h"
+#include "db/write_batch_internal.h"
+#include "leveldb/comparator.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+
+namespace leveldb {
+
+namespace {
+
+class Repairer {
+ public:
+  Repairer(const std::string& dbname, const Options& options)
+      : dbname_(dbname),
+        env_(options.env),
+        icmp_(options.comparator),
+        ipolicy_(options.filter_policy),
+        options_(SanitizeOptions(dbname, &icmp_, &ipolicy_, options)),
+        owns_info_log_(options_.info_log != options.info_log),
+        owns_cache_(options_.block_cache != options.block_cache),
+        next_file_number_(1) {
+    // TableCache can be small since we expect each table to be opened once.
+    table_cache_ = new TableCache(dbname_, options_, 10);
+  }
+
+  ~Repairer() {
+    delete table_cache_;
+    if (owns_info_log_) {
+      delete options_.info_log;
+    }
+    if (owns_cache_) {
+      delete options_.block_cache;
+    }
+  }
+
+  Status Run() {
+    Status status = FindFiles();
+    if (status.ok()) {
+      ConvertLogFilesToTables();
+      ExtractMetaData();
+      status = WriteDescriptor();
+    }
+    if (status.ok()) {
+      unsigned long long bytes = 0;
+      for (size_t i = 0; i < tables_.size(); i++) {
+        bytes += tables_[i].meta.file_size;
+      }
+      Log(options_.info_log,
+          "**** Repaired leveldb %s; "
+          "recovered %d files; %llu bytes. "
+          "Some data may have been lost. "
+          "****",
+          dbname_.c_str(), static_cast<int>(tables_.size()), bytes);
+    }
+    return status;
+  }
+
+ private:
+  struct TableInfo {
+    FileMetaData meta;
+    SequenceNumber max_sequence;
+  };
+
+  Status FindFiles() {
+    std::vector<std::string> filenames;
+    Status status = env_->GetChildren(dbname_, &filenames);
+    if (!status.ok()) {
+      return status;
+    }
+    if (filenames.empty()) {
+      return Status::IOError(dbname_, "repair found no files");
+    }
+
+    uint64_t number;
+    FileType type;
+    for (size_t i = 0; i < filenames.size(); i++) {
+      if (ParseFileName(filenames[i], &number, &type)) {
+        if (type == kDescriptorFile) {
+          manifests_.push_back(filenames[i]);
+        } else {
+          if (number + 1 > next_file_number_) {
+            next_file_number_ = number + 1;
+          }
+          if (type == kLogFile) {
+            logs_.push_back(number);
+          } else if (type == kTableFile) {
+            table_numbers_.push_back(number);
+          } else {
+            // Ignore other files
+          }
+        }
+      }
+    }
+    return status;
+  }
+
+  void ConvertLogFilesToTables() {
+    for (size_t i = 0; i < logs_.size(); i++) {
+      std::string logname = LogFileName(dbname_, logs_[i]);
+      Status status = ConvertLogToTable(logs_[i]);
+      if (!status.ok()) {
+        Log(options_.info_log, "Log #%llu: ignoring conversion error: %s",
+            (unsigned long long)logs_[i], status.ToString().c_str());
+      }
+      ArchiveFile(logname);
+    }
+  }
+
+  Status ConvertLogToTable(uint64_t log) {
+    struct LogReporter : public log::Reader::Reporter {
+      Env* env;
+      Logger* info_log;
+      uint64_t lognum;
+      virtual void Corruption(size_t bytes, const Status& s) {
+        // We print error messages for corruption, but continue repairing.
+        Log(info_log, "Log #%llu: dropping %d bytes; %s",
+            (unsigned long long)lognum, static_cast<int>(bytes),
+            s.ToString().c_str());
+      }
+    };
+
+    // Open the log file
+    std::string logname = LogFileName(dbname_, log);
+    SequentialFile* lfile;
+    Status status = env_->NewSequentialFile(logname, &lfile);
+    if (!status.ok()) {
+      return status;
+    }
+
+    // Create the log reader.
+    LogReporter reporter;
+    reporter.env = env_;
+    reporter.info_log = options_.info_log;
+    reporter.lognum = log;
+    // We intentionally make log::Reader do checksumming so that
+    // corruptions cause entire commits to be skipped instead of
+    // propagating bad information (like overly large sequence
+    // numbers).
+    log::Reader reader(lfile, &reporter, false /*do not checksum*/,
+                       0 /*initial_offset*/);
+
+    // Read all the records and add to a memtable
+    std::string scratch;
+    Slice record;
+    WriteBatch batch;
+    MemTable* mem = new MemTable(icmp_);
+    mem->Ref();
+    int counter = 0;
+    while (reader.ReadRecord(&record, &scratch)) {
+      if (record.size() < 12) {
+        reporter.Corruption(record.size(),
+                            Status::Corruption("log record too small"));
+        continue;
+      }
+      WriteBatchInternal::SetContents(&batch, record);
+      status = WriteBatchInternal::InsertInto(&batch, mem);
+      if (status.ok()) {
+        counter += WriteBatchInternal::Count(&batch);
+      } else {
+        Log(options_.info_log, "Log #%llu: ignoring %s",
+            (unsigned long long)log, status.ToString().c_str());
+        status = Status::OK();  // Keep going with rest of file
+      }
+    }
+    delete lfile;
+
+    // Do not record a version edit for this conversion to a Table
+    // since ExtractMetaData() will also generate edits.
+    FileMetaData meta;
+    meta.number = next_file_number_++;
+    Iterator* iter = mem->NewIterator();
+    status = BuildTable(dbname_, env_, options_, table_cache_, iter, &meta);
+    delete iter;
+    mem->Unref();
+    mem = nullptr;
+    if (status.ok()) {
+      if (meta.file_size > 0) {
+        table_numbers_.push_back(meta.number);
+      }
+    }
+    Log(options_.info_log, "Log #%llu: %d ops saved to Table #%llu %s",
+        (unsigned long long)log, counter, (unsigned long long)meta.number,
+        status.ToString().c_str());
+    return status;
+  }
+
+  void ExtractMetaData() {
+    for (size_t i = 0; i < table_numbers_.size(); i++) {
+      ScanTable(table_numbers_[i]);
+    }
+  }
+
+  Iterator* NewTableIterator(const FileMetaData& meta) {
+    // Same as compaction iterators: if paranoid_checks are on, turn
+    // on checksum verification.
+    ReadOptions r;
+    r.verify_checksums = options_.paranoid_checks;
+    return table_cache_->NewIterator(r, meta.number, meta.file_size);
+  }
+
+  void ScanTable(uint64_t number) {
+    TableInfo t;
+    t.meta.number = number;
+    std::string fname = TableFileName(dbname_, number);
+    Status status = env_->GetFileSize(fname, &t.meta.file_size);
+    if (!status.ok()) {
+      // Try alternate file name.
+      fname = SSTTableFileName(dbname_, number);
+      Status s2 = env_->GetFileSize(fname, &t.meta.file_size);
+      if (s2.ok()) {
+        status = Status::OK();
+      }
+    }
+    if (!status.ok()) {
+      ArchiveFile(TableFileName(dbname_, number));
+      ArchiveFile(SSTTableFileName(dbname_, number));
+      Log(options_.info_log, "Table #%llu: dropped: %s",
+          (unsigned long long)t.meta.number, status.ToString().c_str());
+      return;
+    }
+
+    // Extract metadata by scanning through table.
+    int counter = 0;
+    Iterator* iter = NewTableIterator(t.meta);
+    bool empty = true;
+    ParsedInternalKey parsed;
+    t.max_sequence = 0;
+    for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
+      Slice key = iter->key();
+      if (!ParseInternalKey(key, &parsed)) {
+        Log(options_.info_log, "Table #%llu: unparsable key %s",
+            (unsigned long long)t.meta.number, EscapeString(key).c_str());
+        continue;
+      }
+
+      counter++;
+      if (empty) {
+        empty = false;
+        t.meta.smallest.DecodeFrom(key);
+      }
+      t.meta.largest.DecodeFrom(key);
+      if (parsed.sequence > t.max_sequence) {
+        t.max_sequence = parsed.sequence;
+      }
+    }
+    if (!iter->status().ok()) {
+      status = iter->status();
+    }
+    delete iter;
+    Log(options_.info_log, "Table #%llu: %d entries %s",
+        (unsigned long long)t.meta.number, counter, status.ToString().c_str());
+
+    if (status.ok()) {
+      tables_.push_back(t);
+    } else {
+      RepairTable(fname, t);  // RepairTable archives input file.
+    }
+  }
+
+  void RepairTable(const std::string& src, TableInfo t) {
+    // We will copy src contents to a new table and then rename the
+    // new table over the source.
+
+    // Create builder.
+    std::string copy = TableFileName(dbname_, next_file_number_++);
+    WritableFile* file;
+    Status s = env_->NewWritableFile(copy, &file);
+    if (!s.ok()) {
+      return;
+    }
+    TableBuilder* builder = new TableBuilder(options_, file);
+
+    // Copy data.
+    Iterator* iter = NewTableIterator(t.meta);
+    int counter = 0;
+    for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
+      builder->Add(iter->key(), iter->value());
+      counter++;
+    }
+    delete iter;
+
+    ArchiveFile(src);
+    if (counter == 0) {
+      builder->Abandon();  // Nothing to save
+    } else {
+      s = builder->Finish();
+      if (s.ok()) {
+        t.meta.file_size = builder->FileSize();
+      }
+    }
+    delete builder;
+    builder = nullptr;
+
+    if (s.ok()) {
+      s = file->Close();
+    }
+    delete file;
+    file = nullptr;
+
+    if (counter > 0 && s.ok()) {
+      std::string orig = TableFileName(dbname_, t.meta.number);
+      s = env_->RenameFile(copy, orig);
+      if (s.ok()) {
+        Log(options_.info_log, "Table #%llu: %d entries repaired",
+            (unsigned long long)t.meta.number, counter);
+        tables_.push_back(t);
+      }
+    }
+    if (!s.ok()) {
+      env_->DeleteFile(copy);
+    }
+  }
+
+  Status WriteDescriptor() {
+    std::string tmp = TempFileName(dbname_, 1);
+    WritableFile* file;
+    Status status = env_->NewWritableFile(tmp, &file);
+    if (!status.ok()) {
+      return status;
+    }
+
+    SequenceNumber max_sequence = 0;
+    for (size_t i = 0; i < tables_.size(); i++) {
+      if (max_sequence < tables_[i].max_sequence) {
+        max_sequence = tables_[i].max_sequence;
+      }
+    }
+
+    edit_.SetComparatorName(icmp_.user_comparator()->Name());
+    edit_.SetLogNumber(0);
+    edit_.SetNextFile(next_file_number_);
+    edit_.SetLastSequence(max_sequence);
+
+    for (size_t i = 0; i < tables_.size(); i++) {
+      // TODO(opt): separate out into multiple levels
+      const TableInfo& t = tables_[i];
+      edit_.AddFile(0, t.meta.number, t.meta.file_size, t.meta.smallest,
+                    t.meta.largest);
+    }
+
+    // fprintf(stderr, "NewDescriptor:\n%s\n", edit_.DebugString().c_str());
+    {
+      log::Writer log(file);
+      std::string record;
+      edit_.EncodeTo(&record);
+      status = log.AddRecord(record);
+    }
+    if (status.ok()) {
+      status = file->Close();
+    }
+    delete file;
+    file = nullptr;
+
+    if (!status.ok()) {
+      env_->DeleteFile(tmp);
+    } else {
+      // Discard older manifests
+      for (size_t i = 0; i < manifests_.size(); i++) {
+        ArchiveFile(dbname_ + "/" + manifests_[i]);
+      }
+
+      // Install new manifest
+      status = env_->RenameFile(tmp, DescriptorFileName(dbname_, 1));
+      if (status.ok()) {
+        status = SetCurrentFile(env_, dbname_, 1);
+      } else {
+        env_->DeleteFile(tmp);
+      }
+    }
+    return status;
+  }
+
+  void ArchiveFile(const std::string& fname) {
+    // Move into another directory.  E.g., for
+    //    dir/foo
+    // rename to
+    //    dir/lost/foo
+    const char* slash = strrchr(fname.c_str(), '/');
+    std::string new_dir;
+    if (slash != nullptr) {
+      new_dir.assign(fname.data(), slash - fname.data());
+    }
+    new_dir.append("/lost");
+    env_->CreateDir(new_dir);  // Ignore error
+    std::string new_file = new_dir;
+    new_file.append("/");
+    new_file.append((slash == nullptr) ? fname.c_str() : slash + 1);
+    Status s = env_->RenameFile(fname, new_file);
+    Log(options_.info_log, "Archiving %s: %s\n", fname.c_str(),
+        s.ToString().c_str());
+  }
+
+  const std::string dbname_;
+  Env* const env_;
+  InternalKeyComparator const icmp_;
+  InternalFilterPolicy const ipolicy_;
+  const Options options_;
+  bool owns_info_log_;
+  bool owns_cache_;
+  TableCache* table_cache_;
+  VersionEdit edit_;
+
+  std::vector<std::string> manifests_;
+  std::vector<uint64_t> table_numbers_;
+  std::vector<uint64_t> logs_;
+  std::vector<TableInfo> tables_;
+  uint64_t next_file_number_;
+};
+}  // namespace
+
+Status RepairDB(const std::string& dbname, const Options& options) {
+  Repairer repairer(dbname, options);
+  return repairer.Run();
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/skiplist.h b/ChattingApp 000/Pods/leveldb-library/db/skiplist.h
new file mode 100644
index 0000000..a59b45b
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/skiplist.h	
@@ -0,0 +1,382 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_SKIPLIST_H_
+#define STORAGE_LEVELDB_DB_SKIPLIST_H_
+
+// Thread safety
+// -------------
+//
+// Writes require external synchronization, most likely a mutex.
+// Reads require a guarantee that the SkipList will not be destroyed
+// while the read is in progress.  Apart from that, reads progress
+// without any internal locking or synchronization.
+//
+// Invariants:
+//
+// (1) Allocated nodes are never deleted until the SkipList is
+// destroyed.  This is trivially guaranteed by the code since we
+// never delete any skip list nodes.
+//
+// (2) The contents of a Node except for the next/prev pointers are
+// immutable after the Node has been linked into the SkipList.
+// Only Insert() modifies the list, and it is careful to initialize
+// a node and use release-stores to publish the nodes in one or
+// more lists.
+//
+// ... prev vs. next pointer ordering ...
+
+#include <atomic>
+#include <cassert>
+#include <cstdlib>
+
+#include "util/arena.h"
+#include "util/random.h"
+
+namespace leveldb {
+
+class Arena;
+
+template <typename Key, class Comparator>
+class SkipList {
+ private:
+  struct Node;
+
+ public:
+  // Create a new SkipList object that will use "cmp" for comparing keys,
+  // and will allocate memory using "*arena".  Objects allocated in the arena
+  // must remain allocated for the lifetime of the skiplist object.
+  explicit SkipList(Comparator cmp, Arena* arena);
+
+  SkipList(const SkipList&) = delete;
+  SkipList& operator=(const SkipList&) = delete;
+
+  // Insert key into the list.
+  // REQUIRES: nothing that compares equal to key is currently in the list.
+  void Insert(const Key& key);
+
+  // Returns true iff an entry that compares equal to key is in the list.
+  bool Contains(const Key& key) const;
+
+  // Iteration over the contents of a skip list
+  class Iterator {
+   public:
+    // Initialize an iterator over the specified list.
+    // The returned iterator is not valid.
+    explicit Iterator(const SkipList* list);
+
+    // Returns true iff the iterator is positioned at a valid node.
+    bool Valid() const;
+
+    // Returns the key at the current position.
+    // REQUIRES: Valid()
+    const Key& key() const;
+
+    // Advances to the next position.
+    // REQUIRES: Valid()
+    void Next();
+
+    // Advances to the previous position.
+    // REQUIRES: Valid()
+    void Prev();
+
+    // Advance to the first entry with a key >= target
+    void Seek(const Key& target);
+
+    // Position at the first entry in list.
+    // Final state of iterator is Valid() iff list is not empty.
+    void SeekToFirst();
+
+    // Position at the last entry in list.
+    // Final state of iterator is Valid() iff list is not empty.
+    void SeekToLast();
+
+   private:
+    const SkipList* list_;
+    Node* node_;
+    // Intentionally copyable
+  };
+
+ private:
+  enum { kMaxHeight = 12 };
+
+  inline int GetMaxHeight() const {
+    return max_height_.load(std::memory_order_relaxed);
+  }
+
+  Node* NewNode(const Key& key, int height);
+  int RandomHeight();
+  bool Equal(const Key& a, const Key& b) const { return (compare_(a, b) == 0); }
+
+  // Return true if key is greater than the data stored in "n"
+  bool KeyIsAfterNode(const Key& key, Node* n) const;
+
+  // Return the earliest node that comes at or after key.
+  // Return nullptr if there is no such node.
+  //
+  // If prev is non-null, fills prev[level] with pointer to previous
+  // node at "level" for every level in [0..max_height_-1].
+  Node* FindGreaterOrEqual(const Key& key, Node** prev) const;
+
+  // Return the latest node with a key < key.
+  // Return head_ if there is no such node.
+  Node* FindLessThan(const Key& key) const;
+
+  // Return the last node in the list.
+  // Return head_ if list is empty.
+  Node* FindLast() const;
+
+  // Immutable after construction
+  Comparator const compare_;
+  Arena* const arena_;  // Arena used for allocations of nodes
+
+  Node* const head_;
+
+  // Modified only by Insert().  Read racily by readers, but stale
+  // values are ok.
+  std::atomic<int> max_height_;  // Height of the entire list
+
+  // Read/written only by Insert().
+  Random rnd_;
+};
+
+// Implementation details follow
+template <typename Key, class Comparator>
+struct SkipList<Key, Comparator>::Node {
+  explicit Node(const Key& k) : key(k) {}
+
+  Key const key;
+
+  // Accessors/mutators for links.  Wrapped in methods so we can
+  // add the appropriate barriers as necessary.
+  Node* Next(int n) {
+    assert(n >= 0);
+    // Use an 'acquire load' so that we observe a fully initialized
+    // version of the returned Node.
+    return next_[n].load(std::memory_order_acquire);
+  }
+  void SetNext(int n, Node* x) {
+    assert(n >= 0);
+    // Use a 'release store' so that anybody who reads through this
+    // pointer observes a fully initialized version of the inserted node.
+    next_[n].store(x, std::memory_order_release);
+  }
+
+  // No-barrier variants that can be safely used in a few locations.
+  Node* NoBarrier_Next(int n) {
+    assert(n >= 0);
+    return next_[n].load(std::memory_order_relaxed);
+  }
+  void NoBarrier_SetNext(int n, Node* x) {
+    assert(n >= 0);
+    next_[n].store(x, std::memory_order_relaxed);
+  }
+
+ private:
+  // Array of length equal to the node height.  next_[0] is lowest level link.
+  std::atomic<Node*> next_[1];
+};
+
+template <typename Key, class Comparator>
+typename SkipList<Key, Comparator>::Node* SkipList<Key, Comparator>::NewNode(
+    const Key& key, int height) {
+  char* const node_memory = arena_->AllocateAligned(
+      sizeof(Node) + sizeof(std::atomic<Node*>) * (height - 1));
+  return new (node_memory) Node(key);
+}
+
+template <typename Key, class Comparator>
+inline SkipList<Key, Comparator>::Iterator::Iterator(const SkipList* list) {
+  list_ = list;
+  node_ = nullptr;
+}
+
+template <typename Key, class Comparator>
+inline bool SkipList<Key, Comparator>::Iterator::Valid() const {
+  return node_ != nullptr;
+}
+
+template <typename Key, class Comparator>
+inline const Key& SkipList<Key, Comparator>::Iterator::key() const {
+  assert(Valid());
+  return node_->key;
+}
+
+template <typename Key, class Comparator>
+inline void SkipList<Key, Comparator>::Iterator::Next() {
+  assert(Valid());
+  node_ = node_->Next(0);
+}
+
+template <typename Key, class Comparator>
+inline void SkipList<Key, Comparator>::Iterator::Prev() {
+  // Instead of using explicit "prev" links, we just search for the
+  // last node that falls before key.
+  assert(Valid());
+  node_ = list_->FindLessThan(node_->key);
+  if (node_ == list_->head_) {
+    node_ = nullptr;
+  }
+}
+
+template <typename Key, class Comparator>
+inline void SkipList<Key, Comparator>::Iterator::Seek(const Key& target) {
+  node_ = list_->FindGreaterOrEqual(target, nullptr);
+}
+
+template <typename Key, class Comparator>
+inline void SkipList<Key, Comparator>::Iterator::SeekToFirst() {
+  node_ = list_->head_->Next(0);
+}
+
+template <typename Key, class Comparator>
+inline void SkipList<Key, Comparator>::Iterator::SeekToLast() {
+  node_ = list_->FindLast();
+  if (node_ == list_->head_) {
+    node_ = nullptr;
+  }
+}
+
+template <typename Key, class Comparator>
+int SkipList<Key, Comparator>::RandomHeight() {
+  // Increase height with probability 1 in kBranching
+  static const unsigned int kBranching = 4;
+  int height = 1;
+  while (height < kMaxHeight && ((rnd_.Next() % kBranching) == 0)) {
+    height++;
+  }
+  assert(height > 0);
+  assert(height <= kMaxHeight);
+  return height;
+}
+
+template <typename Key, class Comparator>
+bool SkipList<Key, Comparator>::KeyIsAfterNode(const Key& key, Node* n) const {
+  // null n is considered infinite
+  return (n != nullptr) && (compare_(n->key, key) < 0);
+}
+
+template <typename Key, class Comparator>
+typename SkipList<Key, Comparator>::Node*
+SkipList<Key, Comparator>::FindGreaterOrEqual(const Key& key,
+                                              Node** prev) const {
+  Node* x = head_;
+  int level = GetMaxHeight() - 1;
+  while (true) {
+    Node* next = x->Next(level);
+    if (KeyIsAfterNode(key, next)) {
+      // Keep searching in this list
+      x = next;
+    } else {
+      if (prev != nullptr) prev[level] = x;
+      if (level == 0) {
+        return next;
+      } else {
+        // Switch to next list
+        level--;
+      }
+    }
+  }
+}
+
+template <typename Key, class Comparator>
+typename SkipList<Key, Comparator>::Node*
+SkipList<Key, Comparator>::FindLessThan(const Key& key) const {
+  Node* x = head_;
+  int level = GetMaxHeight() - 1;
+  while (true) {
+    assert(x == head_ || compare_(x->key, key) < 0);
+    Node* next = x->Next(level);
+    if (next == nullptr || compare_(next->key, key) >= 0) {
+      if (level == 0) {
+        return x;
+      } else {
+        // Switch to next list
+        level--;
+      }
+    } else {
+      x = next;
+    }
+  }
+}
+
+template <typename Key, class Comparator>
+typename SkipList<Key, Comparator>::Node* SkipList<Key, Comparator>::FindLast()
+    const {
+  Node* x = head_;
+  int level = GetMaxHeight() - 1;
+  while (true) {
+    Node* next = x->Next(level);
+    if (next == nullptr) {
+      if (level == 0) {
+        return x;
+      } else {
+        // Switch to next list
+        level--;
+      }
+    } else {
+      x = next;
+    }
+  }
+}
+
+template <typename Key, class Comparator>
+SkipList<Key, Comparator>::SkipList(Comparator cmp, Arena* arena)
+    : compare_(cmp),
+      arena_(arena),
+      head_(NewNode(0 /* any key will do */, kMaxHeight)),
+      max_height_(1),
+      rnd_(0xdeadbeef) {
+  for (int i = 0; i < kMaxHeight; i++) {
+    head_->SetNext(i, nullptr);
+  }
+}
+
+template <typename Key, class Comparator>
+void SkipList<Key, Comparator>::Insert(const Key& key) {
+  // TODO(opt): We can use a barrier-free variant of FindGreaterOrEqual()
+  // here since Insert() is externally synchronized.
+  Node* prev[kMaxHeight];
+  Node* x = FindGreaterOrEqual(key, prev);
+
+  // Our data structure does not allow duplicate insertion
+  assert(x == nullptr || !Equal(key, x->key));
+
+  int height = RandomHeight();
+  if (height > GetMaxHeight()) {
+    for (int i = GetMaxHeight(); i < height; i++) {
+      prev[i] = head_;
+    }
+    // It is ok to mutate max_height_ without any synchronization
+    // with concurrent readers.  A concurrent reader that observes
+    // the new value of max_height_ will see either the old value of
+    // new level pointers from head_ (nullptr), or a new value set in
+    // the loop below.  In the former case the reader will
+    // immediately drop to the next level since nullptr sorts after all
+    // keys.  In the latter case the reader will use the new node.
+    max_height_.store(height, std::memory_order_relaxed);
+  }
+
+  x = NewNode(key, height);
+  for (int i = 0; i < height; i++) {
+    // NoBarrier_SetNext() suffices since we will add a barrier when
+    // we publish a pointer to "x" in prev[i].
+    x->NoBarrier_SetNext(i, prev[i]->NoBarrier_Next(i));
+    prev[i]->SetNext(i, x);
+  }
+}
+
+template <typename Key, class Comparator>
+bool SkipList<Key, Comparator>::Contains(const Key& key) const {
+  Node* x = FindGreaterOrEqual(key, nullptr);
+  if (x != nullptr && Equal(key, x->key)) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_SKIPLIST_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/snapshot.h b/ChattingApp 000/Pods/leveldb-library/db/snapshot.h
new file mode 100644
index 0000000..9f1d664
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/snapshot.h	
@@ -0,0 +1,95 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_SNAPSHOT_H_
+#define STORAGE_LEVELDB_DB_SNAPSHOT_H_
+
+#include "db/dbformat.h"
+#include "leveldb/db.h"
+
+namespace leveldb {
+
+class SnapshotList;
+
+// Snapshots are kept in a doubly-linked list in the DB.
+// Each SnapshotImpl corresponds to a particular sequence number.
+class SnapshotImpl : public Snapshot {
+ public:
+  SnapshotImpl(SequenceNumber sequence_number)
+      : sequence_number_(sequence_number) {}
+
+  SequenceNumber sequence_number() const { return sequence_number_; }
+
+ private:
+  friend class SnapshotList;
+
+  // SnapshotImpl is kept in a doubly-linked circular list. The SnapshotList
+  // implementation operates on the next/previous fields direcly.
+  SnapshotImpl* prev_;
+  SnapshotImpl* next_;
+
+  const SequenceNumber sequence_number_;
+
+#if !defined(NDEBUG)
+  SnapshotList* list_ = nullptr;
+#endif  // !defined(NDEBUG)
+};
+
+class SnapshotList {
+ public:
+  SnapshotList() : head_(0) {
+    head_.prev_ = &head_;
+    head_.next_ = &head_;
+  }
+
+  bool empty() const { return head_.next_ == &head_; }
+  SnapshotImpl* oldest() const {
+    assert(!empty());
+    return head_.next_;
+  }
+  SnapshotImpl* newest() const {
+    assert(!empty());
+    return head_.prev_;
+  }
+
+  // Creates a SnapshotImpl and appends it to the end of the list.
+  SnapshotImpl* New(SequenceNumber sequence_number) {
+    assert(empty() || newest()->sequence_number_ <= sequence_number);
+
+    SnapshotImpl* snapshot = new SnapshotImpl(sequence_number);
+
+#if !defined(NDEBUG)
+    snapshot->list_ = this;
+#endif  // !defined(NDEBUG)
+    snapshot->next_ = &head_;
+    snapshot->prev_ = head_.prev_;
+    snapshot->prev_->next_ = snapshot;
+    snapshot->next_->prev_ = snapshot;
+    return snapshot;
+  }
+
+  // Removes a SnapshotImpl from this list.
+  //
+  // The snapshot must have been created by calling New() on this list.
+  //
+  // The snapshot pointer should not be const, because its memory is
+  // deallocated. However, that would force us to change DB::ReleaseSnapshot(),
+  // which is in the API, and currently takes a const Snapshot.
+  void Delete(const SnapshotImpl* snapshot) {
+#if !defined(NDEBUG)
+    assert(snapshot->list_ == this);
+#endif  // !defined(NDEBUG)
+    snapshot->prev_->next_ = snapshot->next_;
+    snapshot->next_->prev_ = snapshot->prev_;
+    delete snapshot;
+  }
+
+ private:
+  // Dummy head of doubly-linked list of snapshots
+  SnapshotImpl head_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_SNAPSHOT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/table_cache.cc b/ChattingApp 000/Pods/leveldb-library/db/table_cache.cc
new file mode 100644
index 0000000..73f05fd
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/table_cache.cc	
@@ -0,0 +1,120 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/table_cache.h"
+
+#include "db/filename.h"
+#include "leveldb/env.h"
+#include "leveldb/table.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+struct TableAndFile {
+  RandomAccessFile* file;
+  Table* table;
+};
+
+static void DeleteEntry(const Slice& key, void* value) {
+  TableAndFile* tf = reinterpret_cast<TableAndFile*>(value);
+  delete tf->table;
+  delete tf->file;
+  delete tf;
+}
+
+static void UnrefEntry(void* arg1, void* arg2) {
+  Cache* cache = reinterpret_cast<Cache*>(arg1);
+  Cache::Handle* h = reinterpret_cast<Cache::Handle*>(arg2);
+  cache->Release(h);
+}
+
+TableCache::TableCache(const std::string& dbname, const Options& options,
+                       int entries)
+    : env_(options.env),
+      dbname_(dbname),
+      options_(options),
+      cache_(NewLRUCache(entries)) {}
+
+TableCache::~TableCache() { delete cache_; }
+
+Status TableCache::FindTable(uint64_t file_number, uint64_t file_size,
+                             Cache::Handle** handle) {
+  Status s;
+  char buf[sizeof(file_number)];
+  EncodeFixed64(buf, file_number);
+  Slice key(buf, sizeof(buf));
+  *handle = cache_->Lookup(key);
+  if (*handle == nullptr) {
+    std::string fname = TableFileName(dbname_, file_number);
+    RandomAccessFile* file = nullptr;
+    Table* table = nullptr;
+    s = env_->NewRandomAccessFile(fname, &file);
+    if (!s.ok()) {
+      std::string old_fname = SSTTableFileName(dbname_, file_number);
+      if (env_->NewRandomAccessFile(old_fname, &file).ok()) {
+        s = Status::OK();
+      }
+    }
+    if (s.ok()) {
+      s = Table::Open(options_, file, file_size, &table);
+    }
+
+    if (!s.ok()) {
+      assert(table == nullptr);
+      delete file;
+      // We do not cache error results so that if the error is transient,
+      // or somebody repairs the file, we recover automatically.
+    } else {
+      TableAndFile* tf = new TableAndFile;
+      tf->file = file;
+      tf->table = table;
+      *handle = cache_->Insert(key, tf, 1, &DeleteEntry);
+    }
+  }
+  return s;
+}
+
+Iterator* TableCache::NewIterator(const ReadOptions& options,
+                                  uint64_t file_number, uint64_t file_size,
+                                  Table** tableptr) {
+  if (tableptr != nullptr) {
+    *tableptr = nullptr;
+  }
+
+  Cache::Handle* handle = nullptr;
+  Status s = FindTable(file_number, file_size, &handle);
+  if (!s.ok()) {
+    return NewErrorIterator(s);
+  }
+
+  Table* table = reinterpret_cast<TableAndFile*>(cache_->Value(handle))->table;
+  Iterator* result = table->NewIterator(options);
+  result->RegisterCleanup(&UnrefEntry, cache_, handle);
+  if (tableptr != nullptr) {
+    *tableptr = table;
+  }
+  return result;
+}
+
+Status TableCache::Get(const ReadOptions& options, uint64_t file_number,
+                       uint64_t file_size, const Slice& k, void* arg,
+                       void (*handle_result)(void*, const Slice&,
+                                             const Slice&)) {
+  Cache::Handle* handle = nullptr;
+  Status s = FindTable(file_number, file_size, &handle);
+  if (s.ok()) {
+    Table* t = reinterpret_cast<TableAndFile*>(cache_->Value(handle))->table;
+    s = t->InternalGet(options, k, arg, handle_result);
+    cache_->Release(handle);
+  }
+  return s;
+}
+
+void TableCache::Evict(uint64_t file_number) {
+  char buf[sizeof(file_number)];
+  EncodeFixed64(buf, file_number);
+  cache_->Erase(Slice(buf, sizeof(buf)));
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/table_cache.h b/ChattingApp 000/Pods/leveldb-library/db/table_cache.h
new file mode 100644
index 0000000..93069c8
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/table_cache.h	
@@ -0,0 +1,58 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Thread-safe (provides internal synchronization)
+
+#ifndef STORAGE_LEVELDB_DB_TABLE_CACHE_H_
+#define STORAGE_LEVELDB_DB_TABLE_CACHE_H_
+
+#include <stdint.h>
+
+#include <string>
+
+#include "db/dbformat.h"
+#include "leveldb/cache.h"
+#include "leveldb/table.h"
+#include "port/port.h"
+
+namespace leveldb {
+
+class Env;
+
+class TableCache {
+ public:
+  TableCache(const std::string& dbname, const Options& options, int entries);
+  ~TableCache();
+
+  // Return an iterator for the specified file number (the corresponding
+  // file length must be exactly "file_size" bytes).  If "tableptr" is
+  // non-null, also sets "*tableptr" to point to the Table object
+  // underlying the returned iterator, or to nullptr if no Table object
+  // underlies the returned iterator.  The returned "*tableptr" object is owned
+  // by the cache and should not be deleted, and is valid for as long as the
+  // returned iterator is live.
+  Iterator* NewIterator(const ReadOptions& options, uint64_t file_number,
+                        uint64_t file_size, Table** tableptr = nullptr);
+
+  // If a seek to internal key "k" in specified file finds an entry,
+  // call (*handle_result)(arg, found_key, found_value).
+  Status Get(const ReadOptions& options, uint64_t file_number,
+             uint64_t file_size, const Slice& k, void* arg,
+             void (*handle_result)(void*, const Slice&, const Slice&));
+
+  // Evict any entry for the specified file number
+  void Evict(uint64_t file_number);
+
+ private:
+  Status FindTable(uint64_t file_number, uint64_t file_size, Cache::Handle**);
+
+  Env* const env_;
+  const std::string dbname_;
+  const Options& options_;
+  Cache* cache_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_TABLE_CACHE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/version_edit.cc b/ChattingApp 000/Pods/leveldb-library/db/version_edit.cc
new file mode 100644
index 0000000..44a4d02
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/version_edit.cc	
@@ -0,0 +1,260 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/version_edit.h"
+
+#include "db/version_set.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+// Tag numbers for serialized VersionEdit.  These numbers are written to
+// disk and should not be changed.
+enum Tag {
+  kComparator = 1,
+  kLogNumber = 2,
+  kNextFileNumber = 3,
+  kLastSequence = 4,
+  kCompactPointer = 5,
+  kDeletedFile = 6,
+  kNewFile = 7,
+  // 8 was used for large value refs
+  kPrevLogNumber = 9
+};
+
+void VersionEdit::Clear() {
+  comparator_.clear();
+  log_number_ = 0;
+  prev_log_number_ = 0;
+  last_sequence_ = 0;
+  next_file_number_ = 0;
+  has_comparator_ = false;
+  has_log_number_ = false;
+  has_prev_log_number_ = false;
+  has_next_file_number_ = false;
+  has_last_sequence_ = false;
+  deleted_files_.clear();
+  new_files_.clear();
+}
+
+void VersionEdit::EncodeTo(std::string* dst) const {
+  if (has_comparator_) {
+    PutVarint32(dst, kComparator);
+    PutLengthPrefixedSlice(dst, comparator_);
+  }
+  if (has_log_number_) {
+    PutVarint32(dst, kLogNumber);
+    PutVarint64(dst, log_number_);
+  }
+  if (has_prev_log_number_) {
+    PutVarint32(dst, kPrevLogNumber);
+    PutVarint64(dst, prev_log_number_);
+  }
+  if (has_next_file_number_) {
+    PutVarint32(dst, kNextFileNumber);
+    PutVarint64(dst, next_file_number_);
+  }
+  if (has_last_sequence_) {
+    PutVarint32(dst, kLastSequence);
+    PutVarint64(dst, last_sequence_);
+  }
+
+  for (size_t i = 0; i < compact_pointers_.size(); i++) {
+    PutVarint32(dst, kCompactPointer);
+    PutVarint32(dst, compact_pointers_[i].first);  // level
+    PutLengthPrefixedSlice(dst, compact_pointers_[i].second.Encode());
+  }
+
+  for (DeletedFileSet::const_iterator iter = deleted_files_.begin();
+       iter != deleted_files_.end(); ++iter) {
+    PutVarint32(dst, kDeletedFile);
+    PutVarint32(dst, iter->first);   // level
+    PutVarint64(dst, iter->second);  // file number
+  }
+
+  for (size_t i = 0; i < new_files_.size(); i++) {
+    const FileMetaData& f = new_files_[i].second;
+    PutVarint32(dst, kNewFile);
+    PutVarint32(dst, new_files_[i].first);  // level
+    PutVarint64(dst, f.number);
+    PutVarint64(dst, f.file_size);
+    PutLengthPrefixedSlice(dst, f.smallest.Encode());
+    PutLengthPrefixedSlice(dst, f.largest.Encode());
+  }
+}
+
+static bool GetInternalKey(Slice* input, InternalKey* dst) {
+  Slice str;
+  if (GetLengthPrefixedSlice(input, &str)) {
+    dst->DecodeFrom(str);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+static bool GetLevel(Slice* input, int* level) {
+  uint32_t v;
+  if (GetVarint32(input, &v) && v < config::kNumLevels) {
+    *level = v;
+    return true;
+  } else {
+    return false;
+  }
+}
+
+Status VersionEdit::DecodeFrom(const Slice& src) {
+  Clear();
+  Slice input = src;
+  const char* msg = nullptr;
+  uint32_t tag;
+
+  // Temporary storage for parsing
+  int level;
+  uint64_t number;
+  FileMetaData f;
+  Slice str;
+  InternalKey key;
+
+  while (msg == nullptr && GetVarint32(&input, &tag)) {
+    switch (tag) {
+      case kComparator:
+        if (GetLengthPrefixedSlice(&input, &str)) {
+          comparator_ = str.ToString();
+          has_comparator_ = true;
+        } else {
+          msg = "comparator name";
+        }
+        break;
+
+      case kLogNumber:
+        if (GetVarint64(&input, &log_number_)) {
+          has_log_number_ = true;
+        } else {
+          msg = "log number";
+        }
+        break;
+
+      case kPrevLogNumber:
+        if (GetVarint64(&input, &prev_log_number_)) {
+          has_prev_log_number_ = true;
+        } else {
+          msg = "previous log number";
+        }
+        break;
+
+      case kNextFileNumber:
+        if (GetVarint64(&input, &next_file_number_)) {
+          has_next_file_number_ = true;
+        } else {
+          msg = "next file number";
+        }
+        break;
+
+      case kLastSequence:
+        if (GetVarint64(&input, &last_sequence_)) {
+          has_last_sequence_ = true;
+        } else {
+          msg = "last sequence number";
+        }
+        break;
+
+      case kCompactPointer:
+        if (GetLevel(&input, &level) && GetInternalKey(&input, &key)) {
+          compact_pointers_.push_back(std::make_pair(level, key));
+        } else {
+          msg = "compaction pointer";
+        }
+        break;
+
+      case kDeletedFile:
+        if (GetLevel(&input, &level) && GetVarint64(&input, &number)) {
+          deleted_files_.insert(std::make_pair(level, number));
+        } else {
+          msg = "deleted file";
+        }
+        break;
+
+      case kNewFile:
+        if (GetLevel(&input, &level) && GetVarint64(&input, &f.number) &&
+            GetVarint64(&input, &f.file_size) &&
+            GetInternalKey(&input, &f.smallest) &&
+            GetInternalKey(&input, &f.largest)) {
+          new_files_.push_back(std::make_pair(level, f));
+        } else {
+          msg = "new-file entry";
+        }
+        break;
+
+      default:
+        msg = "unknown tag";
+        break;
+    }
+  }
+
+  if (msg == nullptr && !input.empty()) {
+    msg = "invalid tag";
+  }
+
+  Status result;
+  if (msg != nullptr) {
+    result = Status::Corruption("VersionEdit", msg);
+  }
+  return result;
+}
+
+std::string VersionEdit::DebugString() const {
+  std::string r;
+  r.append("VersionEdit {");
+  if (has_comparator_) {
+    r.append("\n  Comparator: ");
+    r.append(comparator_);
+  }
+  if (has_log_number_) {
+    r.append("\n  LogNumber: ");
+    AppendNumberTo(&r, log_number_);
+  }
+  if (has_prev_log_number_) {
+    r.append("\n  PrevLogNumber: ");
+    AppendNumberTo(&r, prev_log_number_);
+  }
+  if (has_next_file_number_) {
+    r.append("\n  NextFile: ");
+    AppendNumberTo(&r, next_file_number_);
+  }
+  if (has_last_sequence_) {
+    r.append("\n  LastSeq: ");
+    AppendNumberTo(&r, last_sequence_);
+  }
+  for (size_t i = 0; i < compact_pointers_.size(); i++) {
+    r.append("\n  CompactPointer: ");
+    AppendNumberTo(&r, compact_pointers_[i].first);
+    r.append(" ");
+    r.append(compact_pointers_[i].second.DebugString());
+  }
+  for (DeletedFileSet::const_iterator iter = deleted_files_.begin();
+       iter != deleted_files_.end(); ++iter) {
+    r.append("\n  DeleteFile: ");
+    AppendNumberTo(&r, iter->first);
+    r.append(" ");
+    AppendNumberTo(&r, iter->second);
+  }
+  for (size_t i = 0; i < new_files_.size(); i++) {
+    const FileMetaData& f = new_files_[i].second;
+    r.append("\n  AddFile: ");
+    AppendNumberTo(&r, new_files_[i].first);
+    r.append(" ");
+    AppendNumberTo(&r, f.number);
+    r.append(" ");
+    AppendNumberTo(&r, f.file_size);
+    r.append(" ");
+    r.append(f.smallest.DebugString());
+    r.append(" .. ");
+    r.append(f.largest.DebugString());
+  }
+  r.append("\n}\n");
+  return r;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/version_edit.h b/ChattingApp 000/Pods/leveldb-library/db/version_edit.h
new file mode 100644
index 0000000..2dadda7
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/version_edit.h	
@@ -0,0 +1,106 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_VERSION_EDIT_H_
+#define STORAGE_LEVELDB_DB_VERSION_EDIT_H_
+
+#include <set>
+#include <utility>
+#include <vector>
+
+#include "db/dbformat.h"
+
+namespace leveldb {
+
+class VersionSet;
+
+struct FileMetaData {
+  FileMetaData() : refs(0), allowed_seeks(1 << 30), file_size(0) {}
+
+  int refs;
+  int allowed_seeks;  // Seeks allowed until compaction
+  uint64_t number;
+  uint64_t file_size;    // File size in bytes
+  InternalKey smallest;  // Smallest internal key served by table
+  InternalKey largest;   // Largest internal key served by table
+};
+
+class VersionEdit {
+ public:
+  VersionEdit() { Clear(); }
+  ~VersionEdit() {}
+
+  void Clear();
+
+  void SetComparatorName(const Slice& name) {
+    has_comparator_ = true;
+    comparator_ = name.ToString();
+  }
+  void SetLogNumber(uint64_t num) {
+    has_log_number_ = true;
+    log_number_ = num;
+  }
+  void SetPrevLogNumber(uint64_t num) {
+    has_prev_log_number_ = true;
+    prev_log_number_ = num;
+  }
+  void SetNextFile(uint64_t num) {
+    has_next_file_number_ = true;
+    next_file_number_ = num;
+  }
+  void SetLastSequence(SequenceNumber seq) {
+    has_last_sequence_ = true;
+    last_sequence_ = seq;
+  }
+  void SetCompactPointer(int level, const InternalKey& key) {
+    compact_pointers_.push_back(std::make_pair(level, key));
+  }
+
+  // Add the specified file at the specified number.
+  // REQUIRES: This version has not been saved (see VersionSet::SaveTo)
+  // REQUIRES: "smallest" and "largest" are smallest and largest keys in file
+  void AddFile(int level, uint64_t file, uint64_t file_size,
+               const InternalKey& smallest, const InternalKey& largest) {
+    FileMetaData f;
+    f.number = file;
+    f.file_size = file_size;
+    f.smallest = smallest;
+    f.largest = largest;
+    new_files_.push_back(std::make_pair(level, f));
+  }
+
+  // Delete the specified "file" from the specified "level".
+  void DeleteFile(int level, uint64_t file) {
+    deleted_files_.insert(std::make_pair(level, file));
+  }
+
+  void EncodeTo(std::string* dst) const;
+  Status DecodeFrom(const Slice& src);
+
+  std::string DebugString() const;
+
+ private:
+  friend class VersionSet;
+
+  typedef std::set<std::pair<int, uint64_t> > DeletedFileSet;
+
+  std::string comparator_;
+  uint64_t log_number_;
+  uint64_t prev_log_number_;
+  uint64_t next_file_number_;
+  SequenceNumber last_sequence_;
+  bool has_comparator_;
+  bool has_log_number_;
+  bool has_prev_log_number_;
+  bool has_next_file_number_;
+  bool has_last_sequence_;
+
+  std::vector<std::pair<int, InternalKey> > compact_pointers_;
+  DeletedFileSet deleted_files_;
+  std::vector<std::pair<int, FileMetaData> > new_files_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_VERSION_EDIT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/version_set.cc b/ChattingApp 000/Pods/leveldb-library/db/version_set.cc
new file mode 100644
index 0000000..96a92cc
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/version_set.cc	
@@ -0,0 +1,1585 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "db/version_set.h"
+
+#include <stdio.h>
+
+#include <algorithm>
+
+#include "db/filename.h"
+#include "db/log_reader.h"
+#include "db/log_writer.h"
+#include "db/memtable.h"
+#include "db/table_cache.h"
+#include "leveldb/env.h"
+#include "leveldb/table_builder.h"
+#include "table/merger.h"
+#include "table/two_level_iterator.h"
+#include "util/coding.h"
+#include "util/logging.h"
+
+namespace leveldb {
+
+static size_t TargetFileSize(const Options* options) {
+  return options->max_file_size;
+}
+
+// Maximum bytes of overlaps in grandparent (i.e., level+2) before we
+// stop building a single file in a level->level+1 compaction.
+static int64_t MaxGrandParentOverlapBytes(const Options* options) {
+  return 10 * TargetFileSize(options);
+}
+
+// Maximum number of bytes in all compacted files.  We avoid expanding
+// the lower level file set of a compaction if it would make the
+// total compaction cover more than this many bytes.
+static int64_t ExpandedCompactionByteSizeLimit(const Options* options) {
+  return 25 * TargetFileSize(options);
+}
+
+static double MaxBytesForLevel(const Options* options, int level) {
+  // Note: the result for level zero is not really used since we set
+  // the level-0 compaction threshold based on number of files.
+
+  // Result for both level-0 and level-1
+  double result = 10. * 1048576.0;
+  while (level > 1) {
+    result *= 10;
+    level--;
+  }
+  return result;
+}
+
+static uint64_t MaxFileSizeForLevel(const Options* options, int level) {
+  // We could vary per level to reduce number of files?
+  return TargetFileSize(options);
+}
+
+static int64_t TotalFileSize(const std::vector<FileMetaData*>& files) {
+  int64_t sum = 0;
+  for (size_t i = 0; i < files.size(); i++) {
+    sum += files[i]->file_size;
+  }
+  return sum;
+}
+
+Version::~Version() {
+  assert(refs_ == 0);
+
+  // Remove from linked list
+  prev_->next_ = next_;
+  next_->prev_ = prev_;
+
+  // Drop references to files
+  for (int level = 0; level < config::kNumLevels; level++) {
+    for (size_t i = 0; i < files_[level].size(); i++) {
+      FileMetaData* f = files_[level][i];
+      assert(f->refs > 0);
+      f->refs--;
+      if (f->refs <= 0) {
+        delete f;
+      }
+    }
+  }
+}
+
+int FindFile(const InternalKeyComparator& icmp,
+             const std::vector<FileMetaData*>& files, const Slice& key) {
+  uint32_t left = 0;
+  uint32_t right = files.size();
+  while (left < right) {
+    uint32_t mid = (left + right) / 2;
+    const FileMetaData* f = files[mid];
+    if (icmp.InternalKeyComparator::Compare(f->largest.Encode(), key) < 0) {
+      // Key at "mid.largest" is < "target".  Therefore all
+      // files at or before "mid" are uninteresting.
+      left = mid + 1;
+    } else {
+      // Key at "mid.largest" is >= "target".  Therefore all files
+      // after "mid" are uninteresting.
+      right = mid;
+    }
+  }
+  return right;
+}
+
+static bool AfterFile(const Comparator* ucmp, const Slice* user_key,
+                      const FileMetaData* f) {
+  // null user_key occurs before all keys and is therefore never after *f
+  return (user_key != nullptr &&
+          ucmp->Compare(*user_key, f->largest.user_key()) > 0);
+}
+
+static bool BeforeFile(const Comparator* ucmp, const Slice* user_key,
+                       const FileMetaData* f) {
+  // null user_key occurs after all keys and is therefore never before *f
+  return (user_key != nullptr &&
+          ucmp->Compare(*user_key, f->smallest.user_key()) < 0);
+}
+
+bool SomeFileOverlapsRange(const InternalKeyComparator& icmp,
+                           bool disjoint_sorted_files,
+                           const std::vector<FileMetaData*>& files,
+                           const Slice* smallest_user_key,
+                           const Slice* largest_user_key) {
+  const Comparator* ucmp = icmp.user_comparator();
+  if (!disjoint_sorted_files) {
+    // Need to check against all files
+    for (size_t i = 0; i < files.size(); i++) {
+      const FileMetaData* f = files[i];
+      if (AfterFile(ucmp, smallest_user_key, f) ||
+          BeforeFile(ucmp, largest_user_key, f)) {
+        // No overlap
+      } else {
+        return true;  // Overlap
+      }
+    }
+    return false;
+  }
+
+  // Binary search over file list
+  uint32_t index = 0;
+  if (smallest_user_key != nullptr) {
+    // Find the earliest possible internal key for smallest_user_key
+    InternalKey small_key(*smallest_user_key, kMaxSequenceNumber,
+                          kValueTypeForSeek);
+    index = FindFile(icmp, files, small_key.Encode());
+  }
+
+  if (index >= files.size()) {
+    // beginning of range is after all files, so no overlap.
+    return false;
+  }
+
+  return !BeforeFile(ucmp, largest_user_key, files[index]);
+}
+
+// An internal iterator.  For a given version/level pair, yields
+// information about the files in the level.  For a given entry, key()
+// is the largest key that occurs in the file, and value() is an
+// 16-byte value containing the file number and file size, both
+// encoded using EncodeFixed64.
+class Version::LevelFileNumIterator : public Iterator {
+ public:
+  LevelFileNumIterator(const InternalKeyComparator& icmp,
+                       const std::vector<FileMetaData*>* flist)
+      : icmp_(icmp), flist_(flist), index_(flist->size()) {  // Marks as invalid
+  }
+  virtual bool Valid() const { return index_ < flist_->size(); }
+  virtual void Seek(const Slice& target) {
+    index_ = FindFile(icmp_, *flist_, target);
+  }
+  virtual void SeekToFirst() { index_ = 0; }
+  virtual void SeekToLast() {
+    index_ = flist_->empty() ? 0 : flist_->size() - 1;
+  }
+  virtual void Next() {
+    assert(Valid());
+    index_++;
+  }
+  virtual void Prev() {
+    assert(Valid());
+    if (index_ == 0) {
+      index_ = flist_->size();  // Marks as invalid
+    } else {
+      index_--;
+    }
+  }
+  Slice key() const {
+    assert(Valid());
+    return (*flist_)[index_]->largest.Encode();
+  }
+  Slice value() const {
+    assert(Valid());
+    EncodeFixed64(value_buf_, (*flist_)[index_]->number);
+    EncodeFixed64(value_buf_ + 8, (*flist_)[index_]->file_size);
+    return Slice(value_buf_, sizeof(value_buf_));
+  }
+  virtual Status status() const { return Status::OK(); }
+
+ private:
+  const InternalKeyComparator icmp_;
+  const std::vector<FileMetaData*>* const flist_;
+  uint32_t index_;
+
+  // Backing store for value().  Holds the file number and size.
+  mutable char value_buf_[16];
+};
+
+static Iterator* GetFileIterator(void* arg, const ReadOptions& options,
+                                 const Slice& file_value) {
+  TableCache* cache = reinterpret_cast<TableCache*>(arg);
+  if (file_value.size() != 16) {
+    return NewErrorIterator(
+        Status::Corruption("FileReader invoked with unexpected value"));
+  } else {
+    return cache->NewIterator(options, DecodeFixed64(file_value.data()),
+                              DecodeFixed64(file_value.data() + 8));
+  }
+}
+
+Iterator* Version::NewConcatenatingIterator(const ReadOptions& options,
+                                            int level) const {
+  return NewTwoLevelIterator(
+      new LevelFileNumIterator(vset_->icmp_, &files_[level]), &GetFileIterator,
+      vset_->table_cache_, options);
+}
+
+void Version::AddIterators(const ReadOptions& options,
+                           std::vector<Iterator*>* iters) {
+  // Merge all level zero files together since they may overlap
+  for (size_t i = 0; i < files_[0].size(); i++) {
+    iters->push_back(vset_->table_cache_->NewIterator(
+        options, files_[0][i]->number, files_[0][i]->file_size));
+  }
+
+  // For levels > 0, we can use a concatenating iterator that sequentially
+  // walks through the non-overlapping files in the level, opening them
+  // lazily.
+  for (int level = 1; level < config::kNumLevels; level++) {
+    if (!files_[level].empty()) {
+      iters->push_back(NewConcatenatingIterator(options, level));
+    }
+  }
+}
+
+// Callback from TableCache::Get()
+namespace {
+enum SaverState {
+  kNotFound,
+  kFound,
+  kDeleted,
+  kCorrupt,
+};
+struct Saver {
+  SaverState state;
+  const Comparator* ucmp;
+  Slice user_key;
+  std::string* value;
+};
+}  // namespace
+static void SaveValue(void* arg, const Slice& ikey, const Slice& v) {
+  Saver* s = reinterpret_cast<Saver*>(arg);
+  ParsedInternalKey parsed_key;
+  if (!ParseInternalKey(ikey, &parsed_key)) {
+    s->state = kCorrupt;
+  } else {
+    if (s->ucmp->Compare(parsed_key.user_key, s->user_key) == 0) {
+      s->state = (parsed_key.type == kTypeValue) ? kFound : kDeleted;
+      if (s->state == kFound) {
+        s->value->assign(v.data(), v.size());
+      }
+    }
+  }
+}
+
+static bool NewestFirst(FileMetaData* a, FileMetaData* b) {
+  return a->number > b->number;
+}
+
+void Version::ForEachOverlapping(Slice user_key, Slice internal_key, void* arg,
+                                 bool (*func)(void*, int, FileMetaData*)) {
+  // TODO(sanjay): Change Version::Get() to use this function.
+  const Comparator* ucmp = vset_->icmp_.user_comparator();
+
+  // Search level-0 in order from newest to oldest.
+  std::vector<FileMetaData*> tmp;
+  tmp.reserve(files_[0].size());
+  for (uint32_t i = 0; i < files_[0].size(); i++) {
+    FileMetaData* f = files_[0][i];
+    if (ucmp->Compare(user_key, f->smallest.user_key()) >= 0 &&
+        ucmp->Compare(user_key, f->largest.user_key()) <= 0) {
+      tmp.push_back(f);
+    }
+  }
+  if (!tmp.empty()) {
+    std::sort(tmp.begin(), tmp.end(), NewestFirst);
+    for (uint32_t i = 0; i < tmp.size(); i++) {
+      if (!(*func)(arg, 0, tmp[i])) {
+        return;
+      }
+    }
+  }
+
+  // Search other levels.
+  for (int level = 1; level < config::kNumLevels; level++) {
+    size_t num_files = files_[level].size();
+    if (num_files == 0) continue;
+
+    // Binary search to find earliest index whose largest key >= internal_key.
+    uint32_t index = FindFile(vset_->icmp_, files_[level], internal_key);
+    if (index < num_files) {
+      FileMetaData* f = files_[level][index];
+      if (ucmp->Compare(user_key, f->smallest.user_key()) < 0) {
+        // All of "f" is past any data for user_key
+      } else {
+        if (!(*func)(arg, level, f)) {
+          return;
+        }
+      }
+    }
+  }
+}
+
+Status Version::Get(const ReadOptions& options, const LookupKey& k,
+                    std::string* value, GetStats* stats) {
+  Slice ikey = k.internal_key();
+  Slice user_key = k.user_key();
+  const Comparator* ucmp = vset_->icmp_.user_comparator();
+  Status s;
+
+  stats->seek_file = nullptr;
+  stats->seek_file_level = -1;
+  FileMetaData* last_file_read = nullptr;
+  int last_file_read_level = -1;
+
+  // We can search level-by-level since entries never hop across
+  // levels.  Therefore we are guaranteed that if we find data
+  // in a smaller level, later levels are irrelevant.
+  std::vector<FileMetaData*> tmp;
+  FileMetaData* tmp2;
+  for (int level = 0; level < config::kNumLevels; level++) {
+    size_t num_files = files_[level].size();
+    if (num_files == 0) continue;
+
+    // Get the list of files to search in this level
+    FileMetaData* const* files = &files_[level][0];
+    if (level == 0) {
+      // Level-0 files may overlap each other.  Find all files that
+      // overlap user_key and process them in order from newest to oldest.
+      tmp.reserve(num_files);
+      for (uint32_t i = 0; i < num_files; i++) {
+        FileMetaData* f = files[i];
+        if (ucmp->Compare(user_key, f->smallest.user_key()) >= 0 &&
+            ucmp->Compare(user_key, f->largest.user_key()) <= 0) {
+          tmp.push_back(f);
+        }
+      }
+      if (tmp.empty()) continue;
+
+      std::sort(tmp.begin(), tmp.end(), NewestFirst);
+      files = &tmp[0];
+      num_files = tmp.size();
+    } else {
+      // Binary search to find earliest index whose largest key >= ikey.
+      uint32_t index = FindFile(vset_->icmp_, files_[level], ikey);
+      if (index >= num_files) {
+        files = nullptr;
+        num_files = 0;
+      } else {
+        tmp2 = files[index];
+        if (ucmp->Compare(user_key, tmp2->smallest.user_key()) < 0) {
+          // All of "tmp2" is past any data for user_key
+          files = nullptr;
+          num_files = 0;
+        } else {
+          files = &tmp2;
+          num_files = 1;
+        }
+      }
+    }
+
+    for (uint32_t i = 0; i < num_files; ++i) {
+      if (last_file_read != nullptr && stats->seek_file == nullptr) {
+        // We have had more than one seek for this read.  Charge the 1st file.
+        stats->seek_file = last_file_read;
+        stats->seek_file_level = last_file_read_level;
+      }
+
+      FileMetaData* f = files[i];
+      last_file_read = f;
+      last_file_read_level = level;
+
+      Saver saver;
+      saver.state = kNotFound;
+      saver.ucmp = ucmp;
+      saver.user_key = user_key;
+      saver.value = value;
+      s = vset_->table_cache_->Get(options, f->number, f->file_size, ikey,
+                                   &saver, SaveValue);
+      if (!s.ok()) {
+        return s;
+      }
+      switch (saver.state) {
+        case kNotFound:
+          break;  // Keep searching in other files
+        case kFound:
+          return s;
+        case kDeleted:
+          s = Status::NotFound(Slice());  // Use empty error message for speed
+          return s;
+        case kCorrupt:
+          s = Status::Corruption("corrupted key for ", user_key);
+          return s;
+      }
+    }
+  }
+
+  return Status::NotFound(Slice());  // Use an empty error message for speed
+}
+
+bool Version::UpdateStats(const GetStats& stats) {
+  FileMetaData* f = stats.seek_file;
+  if (f != nullptr) {
+    f->allowed_seeks--;
+    if (f->allowed_seeks <= 0 && file_to_compact_ == nullptr) {
+      file_to_compact_ = f;
+      file_to_compact_level_ = stats.seek_file_level;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool Version::RecordReadSample(Slice internal_key) {
+  ParsedInternalKey ikey;
+  if (!ParseInternalKey(internal_key, &ikey)) {
+    return false;
+  }
+
+  struct State {
+    GetStats stats;  // Holds first matching file
+    int matches;
+
+    static bool Match(void* arg, int level, FileMetaData* f) {
+      State* state = reinterpret_cast<State*>(arg);
+      state->matches++;
+      if (state->matches == 1) {
+        // Remember first match.
+        state->stats.seek_file = f;
+        state->stats.seek_file_level = level;
+      }
+      // We can stop iterating once we have a second match.
+      return state->matches < 2;
+    }
+  };
+
+  State state;
+  state.matches = 0;
+  ForEachOverlapping(ikey.user_key, internal_key, &state, &State::Match);
+
+  // Must have at least two matches since we want to merge across
+  // files. But what if we have a single file that contains many
+  // overwrites and deletions?  Should we have another mechanism for
+  // finding such files?
+  if (state.matches >= 2) {
+    // 1MB cost is about 1 seek (see comment in Builder::Apply).
+    return UpdateStats(state.stats);
+  }
+  return false;
+}
+
+void Version::Ref() { ++refs_; }
+
+void Version::Unref() {
+  assert(this != &vset_->dummy_versions_);
+  assert(refs_ >= 1);
+  --refs_;
+  if (refs_ == 0) {
+    delete this;
+  }
+}
+
+bool Version::OverlapInLevel(int level, const Slice* smallest_user_key,
+                             const Slice* largest_user_key) {
+  return SomeFileOverlapsRange(vset_->icmp_, (level > 0), files_[level],
+                               smallest_user_key, largest_user_key);
+}
+
+int Version::PickLevelForMemTableOutput(const Slice& smallest_user_key,
+                                        const Slice& largest_user_key) {
+  int level = 0;
+  if (!OverlapInLevel(0, &smallest_user_key, &largest_user_key)) {
+    // Push to next level if there is no overlap in next level,
+    // and the #bytes overlapping in the level after that are limited.
+    InternalKey start(smallest_user_key, kMaxSequenceNumber, kValueTypeForSeek);
+    InternalKey limit(largest_user_key, 0, static_cast<ValueType>(0));
+    std::vector<FileMetaData*> overlaps;
+    while (level < config::kMaxMemCompactLevel) {
+      if (OverlapInLevel(level + 1, &smallest_user_key, &largest_user_key)) {
+        break;
+      }
+      if (level + 2 < config::kNumLevels) {
+        // Check that file does not overlap too many grandparent bytes.
+        GetOverlappingInputs(level + 2, &start, &limit, &overlaps);
+        const int64_t sum = TotalFileSize(overlaps);
+        if (sum > MaxGrandParentOverlapBytes(vset_->options_)) {
+          break;
+        }
+      }
+      level++;
+    }
+  }
+  return level;
+}
+
+// Store in "*inputs" all files in "level" that overlap [begin,end]
+void Version::GetOverlappingInputs(int level, const InternalKey* begin,
+                                   const InternalKey* end,
+                                   std::vector<FileMetaData*>* inputs) {
+  assert(level >= 0);
+  assert(level < config::kNumLevels);
+  inputs->clear();
+  Slice user_begin, user_end;
+  if (begin != nullptr) {
+    user_begin = begin->user_key();
+  }
+  if (end != nullptr) {
+    user_end = end->user_key();
+  }
+  const Comparator* user_cmp = vset_->icmp_.user_comparator();
+  for (size_t i = 0; i < files_[level].size();) {
+    FileMetaData* f = files_[level][i++];
+    const Slice file_start = f->smallest.user_key();
+    const Slice file_limit = f->largest.user_key();
+    if (begin != nullptr && user_cmp->Compare(file_limit, user_begin) < 0) {
+      // "f" is completely before specified range; skip it
+    } else if (end != nullptr && user_cmp->Compare(file_start, user_end) > 0) {
+      // "f" is completely after specified range; skip it
+    } else {
+      inputs->push_back(f);
+      if (level == 0) {
+        // Level-0 files may overlap each other.  So check if the newly
+        // added file has expanded the range.  If so, restart search.
+        if (begin != nullptr && user_cmp->Compare(file_start, user_begin) < 0) {
+          user_begin = file_start;
+          inputs->clear();
+          i = 0;
+        } else if (end != nullptr &&
+                   user_cmp->Compare(file_limit, user_end) > 0) {
+          user_end = file_limit;
+          inputs->clear();
+          i = 0;
+        }
+      }
+    }
+  }
+}
+
+std::string Version::DebugString() const {
+  std::string r;
+  for (int level = 0; level < config::kNumLevels; level++) {
+    // E.g.,
+    //   --- level 1 ---
+    //   17:123['a' .. 'd']
+    //   20:43['e' .. 'g']
+    r.append("--- level ");
+    AppendNumberTo(&r, level);
+    r.append(" ---\n");
+    const std::vector<FileMetaData*>& files = files_[level];
+    for (size_t i = 0; i < files.size(); i++) {
+      r.push_back(' ');
+      AppendNumberTo(&r, files[i]->number);
+      r.push_back(':');
+      AppendNumberTo(&r, files[i]->file_size);
+      r.append("[");
+      r.append(files[i]->smallest.DebugString());
+      r.append(" .. ");
+      r.append(files[i]->largest.DebugString());
+      r.append("]\n");
+    }
+  }
+  return r;
+}
+
+// A helper class so we can efficiently apply a whole sequence
+// of edits to a particular state without creating intermediate
+// Versions that contain full copies of the intermediate state.
+class VersionSet::Builder {
+ private:
+  // Helper to sort by v->files_[file_number].smallest
+  struct BySmallestKey {
+    const InternalKeyComparator* internal_comparator;
+
+    bool operator()(FileMetaData* f1, FileMetaData* f2) const {
+      int r = internal_comparator->Compare(f1->smallest, f2->smallest);
+      if (r != 0) {
+        return (r < 0);
+      } else {
+        // Break ties by file number
+        return (f1->number < f2->number);
+      }
+    }
+  };
+
+  typedef std::set<FileMetaData*, BySmallestKey> FileSet;
+  struct LevelState {
+    std::set<uint64_t> deleted_files;
+    FileSet* added_files;
+  };
+
+  VersionSet* vset_;
+  Version* base_;
+  LevelState levels_[config::kNumLevels];
+
+ public:
+  // Initialize a builder with the files from *base and other info from *vset
+  Builder(VersionSet* vset, Version* base) : vset_(vset), base_(base) {
+    base_->Ref();
+    BySmallestKey cmp;
+    cmp.internal_comparator = &vset_->icmp_;
+    for (int level = 0; level < config::kNumLevels; level++) {
+      levels_[level].added_files = new FileSet(cmp);
+    }
+  }
+
+  ~Builder() {
+    for (int level = 0; level < config::kNumLevels; level++) {
+      const FileSet* added = levels_[level].added_files;
+      std::vector<FileMetaData*> to_unref;
+      to_unref.reserve(added->size());
+      for (FileSet::const_iterator it = added->begin(); it != added->end();
+           ++it) {
+        to_unref.push_back(*it);
+      }
+      delete added;
+      for (uint32_t i = 0; i < to_unref.size(); i++) {
+        FileMetaData* f = to_unref[i];
+        f->refs--;
+        if (f->refs <= 0) {
+          delete f;
+        }
+      }
+    }
+    base_->Unref();
+  }
+
+  // Apply all of the edits in *edit to the current state.
+  void Apply(VersionEdit* edit) {
+    // Update compaction pointers
+    for (size_t i = 0; i < edit->compact_pointers_.size(); i++) {
+      const int level = edit->compact_pointers_[i].first;
+      vset_->compact_pointer_[level] =
+          edit->compact_pointers_[i].second.Encode().ToString();
+    }
+
+    // Delete files
+    const VersionEdit::DeletedFileSet& del = edit->deleted_files_;
+    for (VersionEdit::DeletedFileSet::const_iterator iter = del.begin();
+         iter != del.end(); ++iter) {
+      const int level = iter->first;
+      const uint64_t number = iter->second;
+      levels_[level].deleted_files.insert(number);
+    }
+
+    // Add new files
+    for (size_t i = 0; i < edit->new_files_.size(); i++) {
+      const int level = edit->new_files_[i].first;
+      FileMetaData* f = new FileMetaData(edit->new_files_[i].second);
+      f->refs = 1;
+
+      // We arrange to automatically compact this file after
+      // a certain number of seeks.  Let's assume:
+      //   (1) One seek costs 10ms
+      //   (2) Writing or reading 1MB costs 10ms (100MB/s)
+      //   (3) A compaction of 1MB does 25MB of IO:
+      //         1MB read from this level
+      //         10-12MB read from next level (boundaries may be misaligned)
+      //         10-12MB written to next level
+      // This implies that 25 seeks cost the same as the compaction
+      // of 1MB of data.  I.e., one seek costs approximately the
+      // same as the compaction of 40KB of data.  We are a little
+      // conservative and allow approximately one seek for every 16KB
+      // of data before triggering a compaction.
+      f->allowed_seeks = static_cast<int>((f->file_size / 16384U));
+      if (f->allowed_seeks < 100) f->allowed_seeks = 100;
+
+      levels_[level].deleted_files.erase(f->number);
+      levels_[level].added_files->insert(f);
+    }
+  }
+
+  // Save the current state in *v.
+  void SaveTo(Version* v) {
+    BySmallestKey cmp;
+    cmp.internal_comparator = &vset_->icmp_;
+    for (int level = 0; level < config::kNumLevels; level++) {
+      // Merge the set of added files with the set of pre-existing files.
+      // Drop any deleted files.  Store the result in *v.
+      const std::vector<FileMetaData*>& base_files = base_->files_[level];
+      std::vector<FileMetaData*>::const_iterator base_iter = base_files.begin();
+      std::vector<FileMetaData*>::const_iterator base_end = base_files.end();
+      const FileSet* added = levels_[level].added_files;
+      v->files_[level].reserve(base_files.size() + added->size());
+      for (FileSet::const_iterator added_iter = added->begin();
+           added_iter != added->end(); ++added_iter) {
+        // Add all smaller files listed in base_
+        for (std::vector<FileMetaData*>::const_iterator bpos =
+                 std::upper_bound(base_iter, base_end, *added_iter, cmp);
+             base_iter != bpos; ++base_iter) {
+          MaybeAddFile(v, level, *base_iter);
+        }
+
+        MaybeAddFile(v, level, *added_iter);
+      }
+
+      // Add remaining base files
+      for (; base_iter != base_end; ++base_iter) {
+        MaybeAddFile(v, level, *base_iter);
+      }
+
+#ifndef NDEBUG
+      // Make sure there is no overlap in levels > 0
+      if (level > 0) {
+        for (uint32_t i = 1; i < v->files_[level].size(); i++) {
+          const InternalKey& prev_end = v->files_[level][i - 1]->largest;
+          const InternalKey& this_begin = v->files_[level][i]->smallest;
+          if (vset_->icmp_.Compare(prev_end, this_begin) >= 0) {
+            fprintf(stderr, "overlapping ranges in same level %s vs. %s\n",
+                    prev_end.DebugString().c_str(),
+                    this_begin.DebugString().c_str());
+            abort();
+          }
+        }
+      }
+#endif
+    }
+  }
+
+  void MaybeAddFile(Version* v, int level, FileMetaData* f) {
+    if (levels_[level].deleted_files.count(f->number) > 0) {
+      // File is deleted: do nothing
+    } else {
+      std::vector<FileMetaData*>* files = &v->files_[level];
+      if (level > 0 && !files->empty()) {
+        // Must not overlap
+        assert(vset_->icmp_.Compare((*files)[files->size() - 1]->largest,
+                                    f->smallest) < 0);
+      }
+      f->refs++;
+      files->push_back(f);
+    }
+  }
+};
+
+VersionSet::VersionSet(const std::string& dbname, const Options* options,
+                       TableCache* table_cache,
+                       const InternalKeyComparator* cmp)
+    : env_(options->env),
+      dbname_(dbname),
+      options_(options),
+      table_cache_(table_cache),
+      icmp_(*cmp),
+      next_file_number_(2),
+      manifest_file_number_(0),  // Filled by Recover()
+      last_sequence_(0),
+      log_number_(0),
+      prev_log_number_(0),
+      descriptor_file_(nullptr),
+      descriptor_log_(nullptr),
+      dummy_versions_(this),
+      current_(nullptr) {
+  AppendVersion(new Version(this));
+}
+
+VersionSet::~VersionSet() {
+  current_->Unref();
+  assert(dummy_versions_.next_ == &dummy_versions_);  // List must be empty
+  delete descriptor_log_;
+  delete descriptor_file_;
+}
+
+void VersionSet::AppendVersion(Version* v) {
+  // Make "v" current
+  assert(v->refs_ == 0);
+  assert(v != current_);
+  if (current_ != nullptr) {
+    current_->Unref();
+  }
+  current_ = v;
+  v->Ref();
+
+  // Append to linked list
+  v->prev_ = dummy_versions_.prev_;
+  v->next_ = &dummy_versions_;
+  v->prev_->next_ = v;
+  v->next_->prev_ = v;
+}
+
+Status VersionSet::LogAndApply(VersionEdit* edit, port::Mutex* mu) {
+  if (edit->has_log_number_) {
+    assert(edit->log_number_ >= log_number_);
+    assert(edit->log_number_ < next_file_number_);
+  } else {
+    edit->SetLogNumber(log_number_);
+  }
+
+  if (!edit->has_prev_log_number_) {
+    edit->SetPrevLogNumber(prev_log_number_);
+  }
+
+  edit->SetNextFile(next_file_number_);
+  edit->SetLastSequence(last_sequence_);
+
+  Version* v = new Version(this);
+  {
+    Builder builder(this, current_);
+    builder.Apply(edit);
+    builder.SaveTo(v);
+  }
+  Finalize(v);
+
+  // Initialize new descriptor log file if necessary by creating
+  // a temporary file that contains a snapshot of the current version.
+  std::string new_manifest_file;
+  Status s;
+  if (descriptor_log_ == nullptr) {
+    // No reason to unlock *mu here since we only hit this path in the
+    // first call to LogAndApply (when opening the database).
+    assert(descriptor_file_ == nullptr);
+    new_manifest_file = DescriptorFileName(dbname_, manifest_file_number_);
+    edit->SetNextFile(next_file_number_);
+    s = env_->NewWritableFile(new_manifest_file, &descriptor_file_);
+    if (s.ok()) {
+      descriptor_log_ = new log::Writer(descriptor_file_);
+      s = WriteSnapshot(descriptor_log_);
+    }
+  }
+
+  // Unlock during expensive MANIFEST log write
+  {
+    mu->Unlock();
+
+    // Write new record to MANIFEST log
+    if (s.ok()) {
+      std::string record;
+      edit->EncodeTo(&record);
+      s = descriptor_log_->AddRecord(record);
+      if (s.ok()) {
+        s = descriptor_file_->Sync();
+      }
+      if (!s.ok()) {
+        Log(options_->info_log, "MANIFEST write: %s\n", s.ToString().c_str());
+      }
+    }
+
+    // If we just created a new descriptor file, install it by writing a
+    // new CURRENT file that points to it.
+    if (s.ok() && !new_manifest_file.empty()) {
+      s = SetCurrentFile(env_, dbname_, manifest_file_number_);
+    }
+
+    mu->Lock();
+  }
+
+  // Install the new version
+  if (s.ok()) {
+    AppendVersion(v);
+    log_number_ = edit->log_number_;
+    prev_log_number_ = edit->prev_log_number_;
+  } else {
+    delete v;
+    if (!new_manifest_file.empty()) {
+      delete descriptor_log_;
+      delete descriptor_file_;
+      descriptor_log_ = nullptr;
+      descriptor_file_ = nullptr;
+      env_->DeleteFile(new_manifest_file);
+    }
+  }
+
+  return s;
+}
+
+Status VersionSet::Recover(bool* save_manifest) {
+  struct LogReporter : public log::Reader::Reporter {
+    Status* status;
+    virtual void Corruption(size_t bytes, const Status& s) {
+      if (this->status->ok()) *this->status = s;
+    }
+  };
+
+  // Read "CURRENT" file, which contains a pointer to the current manifest file
+  std::string current;
+  Status s = ReadFileToString(env_, CurrentFileName(dbname_), &current);
+  if (!s.ok()) {
+    return s;
+  }
+  if (current.empty() || current[current.size() - 1] != '\n') {
+    return Status::Corruption("CURRENT file does not end with newline");
+  }
+  current.resize(current.size() - 1);
+
+  std::string dscname = dbname_ + "/" + current;
+  SequentialFile* file;
+  s = env_->NewSequentialFile(dscname, &file);
+  if (!s.ok()) {
+    if (s.IsNotFound()) {
+      return Status::Corruption("CURRENT points to a non-existent file",
+                                s.ToString());
+    }
+    return s;
+  }
+
+  bool have_log_number = false;
+  bool have_prev_log_number = false;
+  bool have_next_file = false;
+  bool have_last_sequence = false;
+  uint64_t next_file = 0;
+  uint64_t last_sequence = 0;
+  uint64_t log_number = 0;
+  uint64_t prev_log_number = 0;
+  Builder builder(this, current_);
+
+  {
+    LogReporter reporter;
+    reporter.status = &s;
+    log::Reader reader(file, &reporter, true /*checksum*/,
+                       0 /*initial_offset*/);
+    Slice record;
+    std::string scratch;
+    while (reader.ReadRecord(&record, &scratch) && s.ok()) {
+      VersionEdit edit;
+      s = edit.DecodeFrom(record);
+      if (s.ok()) {
+        if (edit.has_comparator_ &&
+            edit.comparator_ != icmp_.user_comparator()->Name()) {
+          s = Status::InvalidArgument(
+              edit.comparator_ + " does not match existing comparator ",
+              icmp_.user_comparator()->Name());
+        }
+      }
+
+      if (s.ok()) {
+        builder.Apply(&edit);
+      }
+
+      if (edit.has_log_number_) {
+        log_number = edit.log_number_;
+        have_log_number = true;
+      }
+
+      if (edit.has_prev_log_number_) {
+        prev_log_number = edit.prev_log_number_;
+        have_prev_log_number = true;
+      }
+
+      if (edit.has_next_file_number_) {
+        next_file = edit.next_file_number_;
+        have_next_file = true;
+      }
+
+      if (edit.has_last_sequence_) {
+        last_sequence = edit.last_sequence_;
+        have_last_sequence = true;
+      }
+    }
+  }
+  delete file;
+  file = nullptr;
+
+  if (s.ok()) {
+    if (!have_next_file) {
+      s = Status::Corruption("no meta-nextfile entry in descriptor");
+    } else if (!have_log_number) {
+      s = Status::Corruption("no meta-lognumber entry in descriptor");
+    } else if (!have_last_sequence) {
+      s = Status::Corruption("no last-sequence-number entry in descriptor");
+    }
+
+    if (!have_prev_log_number) {
+      prev_log_number = 0;
+    }
+
+    MarkFileNumberUsed(prev_log_number);
+    MarkFileNumberUsed(log_number);
+  }
+
+  if (s.ok()) {
+    Version* v = new Version(this);
+    builder.SaveTo(v);
+    // Install recovered version
+    Finalize(v);
+    AppendVersion(v);
+    manifest_file_number_ = next_file;
+    next_file_number_ = next_file + 1;
+    last_sequence_ = last_sequence;
+    log_number_ = log_number;
+    prev_log_number_ = prev_log_number;
+
+    // See if we can reuse the existing MANIFEST file.
+    if (ReuseManifest(dscname, current)) {
+      // No need to save new manifest
+    } else {
+      *save_manifest = true;
+    }
+  }
+
+  return s;
+}
+
+bool VersionSet::ReuseManifest(const std::string& dscname,
+                               const std::string& dscbase) {
+  if (!options_->reuse_logs) {
+    return false;
+  }
+  FileType manifest_type;
+  uint64_t manifest_number;
+  uint64_t manifest_size;
+  if (!ParseFileName(dscbase, &manifest_number, &manifest_type) ||
+      manifest_type != kDescriptorFile ||
+      !env_->GetFileSize(dscname, &manifest_size).ok() ||
+      // Make new compacted MANIFEST if old one is too big
+      manifest_size >= TargetFileSize(options_)) {
+    return false;
+  }
+
+  assert(descriptor_file_ == nullptr);
+  assert(descriptor_log_ == nullptr);
+  Status r = env_->NewAppendableFile(dscname, &descriptor_file_);
+  if (!r.ok()) {
+    Log(options_->info_log, "Reuse MANIFEST: %s\n", r.ToString().c_str());
+    assert(descriptor_file_ == nullptr);
+    return false;
+  }
+
+  Log(options_->info_log, "Reusing MANIFEST %s\n", dscname.c_str());
+  descriptor_log_ = new log::Writer(descriptor_file_, manifest_size);
+  manifest_file_number_ = manifest_number;
+  return true;
+}
+
+void VersionSet::MarkFileNumberUsed(uint64_t number) {
+  if (next_file_number_ <= number) {
+    next_file_number_ = number + 1;
+  }
+}
+
+void VersionSet::Finalize(Version* v) {
+  // Precomputed best level for next compaction
+  int best_level = -1;
+  double best_score = -1;
+
+  for (int level = 0; level < config::kNumLevels - 1; level++) {
+    double score;
+    if (level == 0) {
+      // We treat level-0 specially by bounding the number of files
+      // instead of number of bytes for two reasons:
+      //
+      // (1) With larger write-buffer sizes, it is nice not to do too
+      // many level-0 compactions.
+      //
+      // (2) The files in level-0 are merged on every read and
+      // therefore we wish to avoid too many files when the individual
+      // file size is small (perhaps because of a small write-buffer
+      // setting, or very high compression ratios, or lots of
+      // overwrites/deletions).
+      score = v->files_[level].size() /
+              static_cast<double>(config::kL0_CompactionTrigger);
+    } else {
+      // Compute the ratio of current size to size limit.
+      const uint64_t level_bytes = TotalFileSize(v->files_[level]);
+      score =
+          static_cast<double>(level_bytes) / MaxBytesForLevel(options_, level);
+    }
+
+    if (score > best_score) {
+      best_level = level;
+      best_score = score;
+    }
+  }
+
+  v->compaction_level_ = best_level;
+  v->compaction_score_ = best_score;
+}
+
+Status VersionSet::WriteSnapshot(log::Writer* log) {
+  // TODO: Break up into multiple records to reduce memory usage on recovery?
+
+  // Save metadata
+  VersionEdit edit;
+  edit.SetComparatorName(icmp_.user_comparator()->Name());
+
+  // Save compaction pointers
+  for (int level = 0; level < config::kNumLevels; level++) {
+    if (!compact_pointer_[level].empty()) {
+      InternalKey key;
+      key.DecodeFrom(compact_pointer_[level]);
+      edit.SetCompactPointer(level, key);
+    }
+  }
+
+  // Save files
+  for (int level = 0; level < config::kNumLevels; level++) {
+    const std::vector<FileMetaData*>& files = current_->files_[level];
+    for (size_t i = 0; i < files.size(); i++) {
+      const FileMetaData* f = files[i];
+      edit.AddFile(level, f->number, f->file_size, f->smallest, f->largest);
+    }
+  }
+
+  std::string record;
+  edit.EncodeTo(&record);
+  return log->AddRecord(record);
+}
+
+int VersionSet::NumLevelFiles(int level) const {
+  assert(level >= 0);
+  assert(level < config::kNumLevels);
+  return current_->files_[level].size();
+}
+
+const char* VersionSet::LevelSummary(LevelSummaryStorage* scratch) const {
+  // Update code if kNumLevels changes
+  static_assert(config::kNumLevels == 7, "");
+  snprintf(scratch->buffer, sizeof(scratch->buffer),
+           "files[ %d %d %d %d %d %d %d ]", int(current_->files_[0].size()),
+           int(current_->files_[1].size()), int(current_->files_[2].size()),
+           int(current_->files_[3].size()), int(current_->files_[4].size()),
+           int(current_->files_[5].size()), int(current_->files_[6].size()));
+  return scratch->buffer;
+}
+
+uint64_t VersionSet::ApproximateOffsetOf(Version* v, const InternalKey& ikey) {
+  uint64_t result = 0;
+  for (int level = 0; level < config::kNumLevels; level++) {
+    const std::vector<FileMetaData*>& files = v->files_[level];
+    for (size_t i = 0; i < files.size(); i++) {
+      if (icmp_.Compare(files[i]->largest, ikey) <= 0) {
+        // Entire file is before "ikey", so just add the file size
+        result += files[i]->file_size;
+      } else if (icmp_.Compare(files[i]->smallest, ikey) > 0) {
+        // Entire file is after "ikey", so ignore
+        if (level > 0) {
+          // Files other than level 0 are sorted by meta->smallest, so
+          // no further files in this level will contain data for
+          // "ikey".
+          break;
+        }
+      } else {
+        // "ikey" falls in the range for this table.  Add the
+        // approximate offset of "ikey" within the table.
+        Table* tableptr;
+        Iterator* iter = table_cache_->NewIterator(
+            ReadOptions(), files[i]->number, files[i]->file_size, &tableptr);
+        if (tableptr != nullptr) {
+          result += tableptr->ApproximateOffsetOf(ikey.Encode());
+        }
+        delete iter;
+      }
+    }
+  }
+  return result;
+}
+
+void VersionSet::AddLiveFiles(std::set<uint64_t>* live) {
+  for (Version* v = dummy_versions_.next_; v != &dummy_versions_;
+       v = v->next_) {
+    for (int level = 0; level < config::kNumLevels; level++) {
+      const std::vector<FileMetaData*>& files = v->files_[level];
+      for (size_t i = 0; i < files.size(); i++) {
+        live->insert(files[i]->number);
+      }
+    }
+  }
+}
+
+int64_t VersionSet::NumLevelBytes(int level) const {
+  assert(level >= 0);
+  assert(level < config::kNumLevels);
+  return TotalFileSize(current_->files_[level]);
+}
+
+int64_t VersionSet::MaxNextLevelOverlappingBytes() {
+  int64_t result = 0;
+  std::vector<FileMetaData*> overlaps;
+  for (int level = 1; level < config::kNumLevels - 1; level++) {
+    for (size_t i = 0; i < current_->files_[level].size(); i++) {
+      const FileMetaData* f = current_->files_[level][i];
+      current_->GetOverlappingInputs(level + 1, &f->smallest, &f->largest,
+                                     &overlaps);
+      const int64_t sum = TotalFileSize(overlaps);
+      if (sum > result) {
+        result = sum;
+      }
+    }
+  }
+  return result;
+}
+
+// Stores the minimal range that covers all entries in inputs in
+// *smallest, *largest.
+// REQUIRES: inputs is not empty
+void VersionSet::GetRange(const std::vector<FileMetaData*>& inputs,
+                          InternalKey* smallest, InternalKey* largest) {
+  assert(!inputs.empty());
+  smallest->Clear();
+  largest->Clear();
+  for (size_t i = 0; i < inputs.size(); i++) {
+    FileMetaData* f = inputs[i];
+    if (i == 0) {
+      *smallest = f->smallest;
+      *largest = f->largest;
+    } else {
+      if (icmp_.Compare(f->smallest, *smallest) < 0) {
+        *smallest = f->smallest;
+      }
+      if (icmp_.Compare(f->largest, *largest) > 0) {
+        *largest = f->largest;
+      }
+    }
+  }
+}
+
+// Stores the minimal range that covers all entries in inputs1 and inputs2
+// in *smallest, *largest.
+// REQUIRES: inputs is not empty
+void VersionSet::GetRange2(const std::vector<FileMetaData*>& inputs1,
+                           const std::vector<FileMetaData*>& inputs2,
+                           InternalKey* smallest, InternalKey* largest) {
+  std::vector<FileMetaData*> all = inputs1;
+  all.insert(all.end(), inputs2.begin(), inputs2.end());
+  GetRange(all, smallest, largest);
+}
+
+Iterator* VersionSet::MakeInputIterator(Compaction* c) {
+  ReadOptions options;
+  options.verify_checksums = options_->paranoid_checks;
+  options.fill_cache = false;
+
+  // Level-0 files have to be merged together.  For other levels,
+  // we will make a concatenating iterator per level.
+  // TODO(opt): use concatenating iterator for level-0 if there is no overlap
+  const int space = (c->level() == 0 ? c->inputs_[0].size() + 1 : 2);
+  Iterator** list = new Iterator*[space];
+  int num = 0;
+  for (int which = 0; which < 2; which++) {
+    if (!c->inputs_[which].empty()) {
+      if (c->level() + which == 0) {
+        const std::vector<FileMetaData*>& files = c->inputs_[which];
+        for (size_t i = 0; i < files.size(); i++) {
+          list[num++] = table_cache_->NewIterator(options, files[i]->number,
+                                                  files[i]->file_size);
+        }
+      } else {
+        // Create concatenating iterator for the files from this level
+        list[num++] = NewTwoLevelIterator(
+            new Version::LevelFileNumIterator(icmp_, &c->inputs_[which]),
+            &GetFileIterator, table_cache_, options);
+      }
+    }
+  }
+  assert(num <= space);
+  Iterator* result = NewMergingIterator(&icmp_, list, num);
+  delete[] list;
+  return result;
+}
+
+Compaction* VersionSet::PickCompaction() {
+  Compaction* c;
+  int level;
+
+  // We prefer compactions triggered by too much data in a level over
+  // the compactions triggered by seeks.
+  const bool size_compaction = (current_->compaction_score_ >= 1);
+  const bool seek_compaction = (current_->file_to_compact_ != nullptr);
+  if (size_compaction) {
+    level = current_->compaction_level_;
+    assert(level >= 0);
+    assert(level + 1 < config::kNumLevels);
+    c = new Compaction(options_, level);
+
+    // Pick the first file that comes after compact_pointer_[level]
+    for (size_t i = 0; i < current_->files_[level].size(); i++) {
+      FileMetaData* f = current_->files_[level][i];
+      if (compact_pointer_[level].empty() ||
+          icmp_.Compare(f->largest.Encode(), compact_pointer_[level]) > 0) {
+        c->inputs_[0].push_back(f);
+        break;
+      }
+    }
+    if (c->inputs_[0].empty()) {
+      // Wrap-around to the beginning of the key space
+      c->inputs_[0].push_back(current_->files_[level][0]);
+    }
+  } else if (seek_compaction) {
+    level = current_->file_to_compact_level_;
+    c = new Compaction(options_, level);
+    c->inputs_[0].push_back(current_->file_to_compact_);
+  } else {
+    return nullptr;
+  }
+
+  c->input_version_ = current_;
+  c->input_version_->Ref();
+
+  // Files in level 0 may overlap each other, so pick up all overlapping ones
+  if (level == 0) {
+    InternalKey smallest, largest;
+    GetRange(c->inputs_[0], &smallest, &largest);
+    // Note that the next call will discard the file we placed in
+    // c->inputs_[0] earlier and replace it with an overlapping set
+    // which will include the picked file.
+    current_->GetOverlappingInputs(0, &smallest, &largest, &c->inputs_[0]);
+    assert(!c->inputs_[0].empty());
+  }
+
+  SetupOtherInputs(c);
+
+  return c;
+}
+
+// Finds the largest key in a vector of files. Returns true if files it not
+// empty.
+bool FindLargestKey(const InternalKeyComparator& icmp,
+                    const std::vector<FileMetaData*>& files,
+                    InternalKey* largest_key) {
+  if (files.empty()) {
+    return false;
+  }
+  *largest_key = files[0]->largest;
+  for (size_t i = 1; i < files.size(); ++i) {
+    FileMetaData* f = files[i];
+    if (icmp.Compare(f->largest, *largest_key) > 0) {
+      *largest_key = f->largest;
+    }
+  }
+  return true;
+}
+
+// Finds minimum file b2=(l2, u2) in level file for which l2 > u1 and
+// user_key(l2) = user_key(u1)
+FileMetaData* FindSmallestBoundaryFile(
+    const InternalKeyComparator& icmp,
+    const std::vector<FileMetaData*>& level_files,
+    const InternalKey& largest_key) {
+  const Comparator* user_cmp = icmp.user_comparator();
+  FileMetaData* smallest_boundary_file = nullptr;
+  for (size_t i = 0; i < level_files.size(); ++i) {
+    FileMetaData* f = level_files[i];
+    if (icmp.Compare(f->smallest, largest_key) > 0 &&
+        user_cmp->Compare(f->smallest.user_key(), largest_key.user_key()) ==
+            0) {
+      if (smallest_boundary_file == nullptr ||
+          icmp.Compare(f->smallest, smallest_boundary_file->smallest) < 0) {
+        smallest_boundary_file = f;
+      }
+    }
+  }
+  return smallest_boundary_file;
+}
+
+// Extracts the largest file b1 from |compaction_files| and then searches for a
+// b2 in |level_files| for which user_key(u1) = user_key(l2). If it finds such a
+// file b2 (known as a boundary file) it adds it to |compaction_files| and then
+// searches again using this new upper bound.
+//
+// If there are two blocks, b1=(l1, u1) and b2=(l2, u2) and
+// user_key(u1) = user_key(l2), and if we compact b1 but not b2 then a
+// subsequent get operation will yield an incorrect result because it will
+// return the record from b2 in level i rather than from b1 because it searches
+// level by level for records matching the supplied user key.
+//
+// parameters:
+//   in     level_files:      List of files to search for boundary files.
+//   in/out compaction_files: List of files to extend by adding boundary files.
+void AddBoundaryInputs(const InternalKeyComparator& icmp,
+                       const std::vector<FileMetaData*>& level_files,
+                       std::vector<FileMetaData*>* compaction_files) {
+  InternalKey largest_key;
+
+  // Quick return if compaction_files is empty.
+  if (!FindLargestKey(icmp, *compaction_files, &largest_key)) {
+    return;
+  }
+
+  bool continue_searching = true;
+  while (continue_searching) {
+    FileMetaData* smallest_boundary_file =
+        FindSmallestBoundaryFile(icmp, level_files, largest_key);
+
+    // If a boundary file was found advance largest_key, otherwise we're done.
+    if (smallest_boundary_file != NULL) {
+      compaction_files->push_back(smallest_boundary_file);
+      largest_key = smallest_boundary_file->largest;
+    } else {
+      continue_searching = false;
+    }
+  }
+}
+
+void VersionSet::SetupOtherInputs(Compaction* c) {
+  const int level = c->level();
+  InternalKey smallest, largest;
+
+  AddBoundaryInputs(icmp_, current_->files_[level], &c->inputs_[0]);
+  GetRange(c->inputs_[0], &smallest, &largest);
+
+  current_->GetOverlappingInputs(level + 1, &smallest, &largest,
+                                 &c->inputs_[1]);
+
+  // Get entire range covered by compaction
+  InternalKey all_start, all_limit;
+  GetRange2(c->inputs_[0], c->inputs_[1], &all_start, &all_limit);
+
+  // See if we can grow the number of inputs in "level" without
+  // changing the number of "level+1" files we pick up.
+  if (!c->inputs_[1].empty()) {
+    std::vector<FileMetaData*> expanded0;
+    current_->GetOverlappingInputs(level, &all_start, &all_limit, &expanded0);
+    AddBoundaryInputs(icmp_, current_->files_[level], &expanded0);
+    const int64_t inputs0_size = TotalFileSize(c->inputs_[0]);
+    const int64_t inputs1_size = TotalFileSize(c->inputs_[1]);
+    const int64_t expanded0_size = TotalFileSize(expanded0);
+    if (expanded0.size() > c->inputs_[0].size() &&
+        inputs1_size + expanded0_size <
+            ExpandedCompactionByteSizeLimit(options_)) {
+      InternalKey new_start, new_limit;
+      GetRange(expanded0, &new_start, &new_limit);
+      std::vector<FileMetaData*> expanded1;
+      current_->GetOverlappingInputs(level + 1, &new_start, &new_limit,
+                                     &expanded1);
+      if (expanded1.size() == c->inputs_[1].size()) {
+        Log(options_->info_log,
+            "Expanding@%d %d+%d (%ld+%ld bytes) to %d+%d (%ld+%ld bytes)\n",
+            level, int(c->inputs_[0].size()), int(c->inputs_[1].size()),
+            long(inputs0_size), long(inputs1_size), int(expanded0.size()),
+            int(expanded1.size()), long(expanded0_size), long(inputs1_size));
+        smallest = new_start;
+        largest = new_limit;
+        c->inputs_[0] = expanded0;
+        c->inputs_[1] = expanded1;
+        GetRange2(c->inputs_[0], c->inputs_[1], &all_start, &all_limit);
+      }
+    }
+  }
+
+  // Compute the set of grandparent files that overlap this compaction
+  // (parent == level+1; grandparent == level+2)
+  if (level + 2 < config::kNumLevels) {
+    current_->GetOverlappingInputs(level + 2, &all_start, &all_limit,
+                                   &c->grandparents_);
+  }
+
+  // Update the place where we will do the next compaction for this level.
+  // We update this immediately instead of waiting for the VersionEdit
+  // to be applied so that if the compaction fails, we will try a different
+  // key range next time.
+  compact_pointer_[level] = largest.Encode().ToString();
+  c->edit_.SetCompactPointer(level, largest);
+}
+
+Compaction* VersionSet::CompactRange(int level, const InternalKey* begin,
+                                     const InternalKey* end) {
+  std::vector<FileMetaData*> inputs;
+  current_->GetOverlappingInputs(level, begin, end, &inputs);
+  if (inputs.empty()) {
+    return nullptr;
+  }
+
+  // Avoid compacting too much in one shot in case the range is large.
+  // But we cannot do this for level-0 since level-0 files can overlap
+  // and we must not pick one file and drop another older file if the
+  // two files overlap.
+  if (level > 0) {
+    const uint64_t limit = MaxFileSizeForLevel(options_, level);
+    uint64_t total = 0;
+    for (size_t i = 0; i < inputs.size(); i++) {
+      uint64_t s = inputs[i]->file_size;
+      total += s;
+      if (total >= limit) {
+        inputs.resize(i + 1);
+        break;
+      }
+    }
+  }
+
+  Compaction* c = new Compaction(options_, level);
+  c->input_version_ = current_;
+  c->input_version_->Ref();
+  c->inputs_[0] = inputs;
+  SetupOtherInputs(c);
+  return c;
+}
+
+Compaction::Compaction(const Options* options, int level)
+    : level_(level),
+      max_output_file_size_(MaxFileSizeForLevel(options, level)),
+      input_version_(nullptr),
+      grandparent_index_(0),
+      seen_key_(false),
+      overlapped_bytes_(0) {
+  for (int i = 0; i < config::kNumLevels; i++) {
+    level_ptrs_[i] = 0;
+  }
+}
+
+Compaction::~Compaction() {
+  if (input_version_ != nullptr) {
+    input_version_->Unref();
+  }
+}
+
+bool Compaction::IsTrivialMove() const {
+  const VersionSet* vset = input_version_->vset_;
+  // Avoid a move if there is lots of overlapping grandparent data.
+  // Otherwise, the move could create a parent file that will require
+  // a very expensive merge later on.
+  return (num_input_files(0) == 1 && num_input_files(1) == 0 &&
+          TotalFileSize(grandparents_) <=
+              MaxGrandParentOverlapBytes(vset->options_));
+}
+
+void Compaction::AddInputDeletions(VersionEdit* edit) {
+  for (int which = 0; which < 2; which++) {
+    for (size_t i = 0; i < inputs_[which].size(); i++) {
+      edit->DeleteFile(level_ + which, inputs_[which][i]->number);
+    }
+  }
+}
+
+bool Compaction::IsBaseLevelForKey(const Slice& user_key) {
+  // Maybe use binary search to find right entry instead of linear search?
+  const Comparator* user_cmp = input_version_->vset_->icmp_.user_comparator();
+  for (int lvl = level_ + 2; lvl < config::kNumLevels; lvl++) {
+    const std::vector<FileMetaData*>& files = input_version_->files_[lvl];
+    for (; level_ptrs_[lvl] < files.size();) {
+      FileMetaData* f = files[level_ptrs_[lvl]];
+      if (user_cmp->Compare(user_key, f->largest.user_key()) <= 0) {
+        // We've advanced far enough
+        if (user_cmp->Compare(user_key, f->smallest.user_key()) >= 0) {
+          // Key falls in this file's range, so definitely not base level
+          return false;
+        }
+        break;
+      }
+      level_ptrs_[lvl]++;
+    }
+  }
+  return true;
+}
+
+bool Compaction::ShouldStopBefore(const Slice& internal_key) {
+  const VersionSet* vset = input_version_->vset_;
+  // Scan to find earliest grandparent file that contains key.
+  const InternalKeyComparator* icmp = &vset->icmp_;
+  while (grandparent_index_ < grandparents_.size() &&
+         icmp->Compare(internal_key,
+                       grandparents_[grandparent_index_]->largest.Encode()) >
+             0) {
+    if (seen_key_) {
+      overlapped_bytes_ += grandparents_[grandparent_index_]->file_size;
+    }
+    grandparent_index_++;
+  }
+  seen_key_ = true;
+
+  if (overlapped_bytes_ > MaxGrandParentOverlapBytes(vset->options_)) {
+    // Too much overlap for current output; start new output
+    overlapped_bytes_ = 0;
+    return true;
+  } else {
+    return false;
+  }
+}
+
+void Compaction::ReleaseInputs() {
+  if (input_version_ != nullptr) {
+    input_version_->Unref();
+    input_version_ = nullptr;
+  }
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/version_set.h b/ChattingApp 000/Pods/leveldb-library/db/version_set.h
new file mode 100644
index 0000000..69f3d70
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/version_set.h	
@@ -0,0 +1,393 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// The representation of a DBImpl consists of a set of Versions.  The
+// newest version is called "current".  Older versions may be kept
+// around to provide a consistent view to live iterators.
+//
+// Each Version keeps track of a set of Table files per level.  The
+// entire set of versions is maintained in a VersionSet.
+//
+// Version,VersionSet are thread-compatible, but require external
+// synchronization on all accesses.
+
+#ifndef STORAGE_LEVELDB_DB_VERSION_SET_H_
+#define STORAGE_LEVELDB_DB_VERSION_SET_H_
+
+#include <map>
+#include <set>
+#include <vector>
+
+#include "db/dbformat.h"
+#include "db/version_edit.h"
+#include "port/port.h"
+#include "port/thread_annotations.h"
+
+namespace leveldb {
+
+namespace log {
+class Writer;
+}
+
+class Compaction;
+class Iterator;
+class MemTable;
+class TableBuilder;
+class TableCache;
+class Version;
+class VersionSet;
+class WritableFile;
+
+// Return the smallest index i such that files[i]->largest >= key.
+// Return files.size() if there is no such file.
+// REQUIRES: "files" contains a sorted list of non-overlapping files.
+int FindFile(const InternalKeyComparator& icmp,
+             const std::vector<FileMetaData*>& files, const Slice& key);
+
+// Returns true iff some file in "files" overlaps the user key range
+// [*smallest,*largest].
+// smallest==nullptr represents a key smaller than all keys in the DB.
+// largest==nullptr represents a key largest than all keys in the DB.
+// REQUIRES: If disjoint_sorted_files, files[] contains disjoint ranges
+//           in sorted order.
+bool SomeFileOverlapsRange(const InternalKeyComparator& icmp,
+                           bool disjoint_sorted_files,
+                           const std::vector<FileMetaData*>& files,
+                           const Slice* smallest_user_key,
+                           const Slice* largest_user_key);
+
+class Version {
+ public:
+  // Lookup the value for key.  If found, store it in *val and
+  // return OK.  Else return a non-OK status.  Fills *stats.
+  // REQUIRES: lock is not held
+  struct GetStats {
+    FileMetaData* seek_file;
+    int seek_file_level;
+  };
+
+  // Append to *iters a sequence of iterators that will
+  // yield the contents of this Version when merged together.
+  // REQUIRES: This version has been saved (see VersionSet::SaveTo)
+  void AddIterators(const ReadOptions&, std::vector<Iterator*>* iters);
+
+  Status Get(const ReadOptions&, const LookupKey& key, std::string* val,
+             GetStats* stats);
+
+  // Adds "stats" into the current state.  Returns true if a new
+  // compaction may need to be triggered, false otherwise.
+  // REQUIRES: lock is held
+  bool UpdateStats(const GetStats& stats);
+
+  // Record a sample of bytes read at the specified internal key.
+  // Samples are taken approximately once every config::kReadBytesPeriod
+  // bytes.  Returns true if a new compaction may need to be triggered.
+  // REQUIRES: lock is held
+  bool RecordReadSample(Slice key);
+
+  // Reference count management (so Versions do not disappear out from
+  // under live iterators)
+  void Ref();
+  void Unref();
+
+  void GetOverlappingInputs(
+      int level,
+      const InternalKey* begin,  // nullptr means before all keys
+      const InternalKey* end,    // nullptr means after all keys
+      std::vector<FileMetaData*>* inputs);
+
+  // Returns true iff some file in the specified level overlaps
+  // some part of [*smallest_user_key,*largest_user_key].
+  // smallest_user_key==nullptr represents a key smaller than all the DB's keys.
+  // largest_user_key==nullptr represents a key largest than all the DB's keys.
+  bool OverlapInLevel(int level, const Slice* smallest_user_key,
+                      const Slice* largest_user_key);
+
+  // Return the level at which we should place a new memtable compaction
+  // result that covers the range [smallest_user_key,largest_user_key].
+  int PickLevelForMemTableOutput(const Slice& smallest_user_key,
+                                 const Slice& largest_user_key);
+
+  int NumFiles(int level) const { return files_[level].size(); }
+
+  // Return a human readable string that describes this version's contents.
+  std::string DebugString() const;
+
+ private:
+  friend class Compaction;
+  friend class VersionSet;
+
+  class LevelFileNumIterator;
+
+  explicit Version(VersionSet* vset)
+      : vset_(vset),
+        next_(this),
+        prev_(this),
+        refs_(0),
+        file_to_compact_(nullptr),
+        file_to_compact_level_(-1),
+        compaction_score_(-1),
+        compaction_level_(-1) {}
+
+  Version(const Version&) = delete;
+  Version& operator=(const Version&) = delete;
+
+  ~Version();
+
+  Iterator* NewConcatenatingIterator(const ReadOptions&, int level) const;
+
+  // Call func(arg, level, f) for every file that overlaps user_key in
+  // order from newest to oldest.  If an invocation of func returns
+  // false, makes no more calls.
+  //
+  // REQUIRES: user portion of internal_key == user_key.
+  void ForEachOverlapping(Slice user_key, Slice internal_key, void* arg,
+                          bool (*func)(void*, int, FileMetaData*));
+
+  VersionSet* vset_;  // VersionSet to which this Version belongs
+  Version* next_;     // Next version in linked list
+  Version* prev_;     // Previous version in linked list
+  int refs_;          // Number of live refs to this version
+
+  // List of files per level
+  std::vector<FileMetaData*> files_[config::kNumLevels];
+
+  // Next file to compact based on seek stats.
+  FileMetaData* file_to_compact_;
+  int file_to_compact_level_;
+
+  // Level that should be compacted next and its compaction score.
+  // Score < 1 means compaction is not strictly needed.  These fields
+  // are initialized by Finalize().
+  double compaction_score_;
+  int compaction_level_;
+};
+
+class VersionSet {
+ public:
+  VersionSet(const std::string& dbname, const Options* options,
+             TableCache* table_cache, const InternalKeyComparator*);
+  VersionSet(const VersionSet&) = delete;
+  VersionSet& operator=(const VersionSet&) = delete;
+
+  ~VersionSet();
+
+  // Apply *edit to the current version to form a new descriptor that
+  // is both saved to persistent state and installed as the new
+  // current version.  Will release *mu while actually writing to the file.
+  // REQUIRES: *mu is held on entry.
+  // REQUIRES: no other thread concurrently calls LogAndApply()
+  Status LogAndApply(VersionEdit* edit, port::Mutex* mu)
+      EXCLUSIVE_LOCKS_REQUIRED(mu);
+
+  // Recover the last saved descriptor from persistent storage.
+  Status Recover(bool* save_manifest);
+
+  // Return the current version.
+  Version* current() const { return current_; }
+
+  // Return the current manifest file number
+  uint64_t ManifestFileNumber() const { return manifest_file_number_; }
+
+  // Allocate and return a new file number
+  uint64_t NewFileNumber() { return next_file_number_++; }
+
+  // Arrange to reuse "file_number" unless a newer file number has
+  // already been allocated.
+  // REQUIRES: "file_number" was returned by a call to NewFileNumber().
+  void ReuseFileNumber(uint64_t file_number) {
+    if (next_file_number_ == file_number + 1) {
+      next_file_number_ = file_number;
+    }
+  }
+
+  // Return the number of Table files at the specified level.
+  int NumLevelFiles(int level) const;
+
+  // Return the combined file size of all files at the specified level.
+  int64_t NumLevelBytes(int level) const;
+
+  // Return the last sequence number.
+  uint64_t LastSequence() const { return last_sequence_; }
+
+  // Set the last sequence number to s.
+  void SetLastSequence(uint64_t s) {
+    assert(s >= last_sequence_);
+    last_sequence_ = s;
+  }
+
+  // Mark the specified file number as used.
+  void MarkFileNumberUsed(uint64_t number);
+
+  // Return the current log file number.
+  uint64_t LogNumber() const { return log_number_; }
+
+  // Return the log file number for the log file that is currently
+  // being compacted, or zero if there is no such log file.
+  uint64_t PrevLogNumber() const { return prev_log_number_; }
+
+  // Pick level and inputs for a new compaction.
+  // Returns nullptr if there is no compaction to be done.
+  // Otherwise returns a pointer to a heap-allocated object that
+  // describes the compaction.  Caller should delete the result.
+  Compaction* PickCompaction();
+
+  // Return a compaction object for compacting the range [begin,end] in
+  // the specified level.  Returns nullptr if there is nothing in that
+  // level that overlaps the specified range.  Caller should delete
+  // the result.
+  Compaction* CompactRange(int level, const InternalKey* begin,
+                           const InternalKey* end);
+
+  // Return the maximum overlapping data (in bytes) at next level for any
+  // file at a level >= 1.
+  int64_t MaxNextLevelOverlappingBytes();
+
+  // Create an iterator that reads over the compaction inputs for "*c".
+  // The caller should delete the iterator when no longer needed.
+  Iterator* MakeInputIterator(Compaction* c);
+
+  // Returns true iff some level needs a compaction.
+  bool NeedsCompaction() const {
+    Version* v = current_;
+    return (v->compaction_score_ >= 1) || (v->file_to_compact_ != nullptr);
+  }
+
+  // Add all files listed in any live version to *live.
+  // May also mutate some internal state.
+  void AddLiveFiles(std::set<uint64_t>* live);
+
+  // Return the approximate offset in the database of the data for
+  // "key" as of version "v".
+  uint64_t ApproximateOffsetOf(Version* v, const InternalKey& key);
+
+  // Return a human-readable short (single-line) summary of the number
+  // of files per level.  Uses *scratch as backing store.
+  struct LevelSummaryStorage {
+    char buffer[100];
+  };
+  const char* LevelSummary(LevelSummaryStorage* scratch) const;
+
+ private:
+  class Builder;
+
+  friend class Compaction;
+  friend class Version;
+
+  bool ReuseManifest(const std::string& dscname, const std::string& dscbase);
+
+  void Finalize(Version* v);
+
+  void GetRange(const std::vector<FileMetaData*>& inputs, InternalKey* smallest,
+                InternalKey* largest);
+
+  void GetRange2(const std::vector<FileMetaData*>& inputs1,
+                 const std::vector<FileMetaData*>& inputs2,
+                 InternalKey* smallest, InternalKey* largest);
+
+  void SetupOtherInputs(Compaction* c);
+
+  // Save current contents to *log
+  Status WriteSnapshot(log::Writer* log);
+
+  void AppendVersion(Version* v);
+
+  Env* const env_;
+  const std::string dbname_;
+  const Options* const options_;
+  TableCache* const table_cache_;
+  const InternalKeyComparator icmp_;
+  uint64_t next_file_number_;
+  uint64_t manifest_file_number_;
+  uint64_t last_sequence_;
+  uint64_t log_number_;
+  uint64_t prev_log_number_;  // 0 or backing store for memtable being compacted
+
+  // Opened lazily
+  WritableFile* descriptor_file_;
+  log::Writer* descriptor_log_;
+  Version dummy_versions_;  // Head of circular doubly-linked list of versions.
+  Version* current_;        // == dummy_versions_.prev_
+
+  // Per-level key at which the next compaction at that level should start.
+  // Either an empty string, or a valid InternalKey.
+  std::string compact_pointer_[config::kNumLevels];
+};
+
+// A Compaction encapsulates information about a compaction.
+class Compaction {
+ public:
+  ~Compaction();
+
+  // Return the level that is being compacted.  Inputs from "level"
+  // and "level+1" will be merged to produce a set of "level+1" files.
+  int level() const { return level_; }
+
+  // Return the object that holds the edits to the descriptor done
+  // by this compaction.
+  VersionEdit* edit() { return &edit_; }
+
+  // "which" must be either 0 or 1
+  int num_input_files(int which) const { return inputs_[which].size(); }
+
+  // Return the ith input file at "level()+which" ("which" must be 0 or 1).
+  FileMetaData* input(int which, int i) const { return inputs_[which][i]; }
+
+  // Maximum size of files to build during this compaction.
+  uint64_t MaxOutputFileSize() const { return max_output_file_size_; }
+
+  // Is this a trivial compaction that can be implemented by just
+  // moving a single input file to the next level (no merging or splitting)
+  bool IsTrivialMove() const;
+
+  // Add all inputs to this compaction as delete operations to *edit.
+  void AddInputDeletions(VersionEdit* edit);
+
+  // Returns true if the information we have available guarantees that
+  // the compaction is producing data in "level+1" for which no data exists
+  // in levels greater than "level+1".
+  bool IsBaseLevelForKey(const Slice& user_key);
+
+  // Returns true iff we should stop building the current output
+  // before processing "internal_key".
+  bool ShouldStopBefore(const Slice& internal_key);
+
+  // Release the input version for the compaction, once the compaction
+  // is successful.
+  void ReleaseInputs();
+
+ private:
+  friend class Version;
+  friend class VersionSet;
+
+  Compaction(const Options* options, int level);
+
+  int level_;
+  uint64_t max_output_file_size_;
+  Version* input_version_;
+  VersionEdit edit_;
+
+  // Each compaction reads inputs from "level_" and "level_+1"
+  std::vector<FileMetaData*> inputs_[2];  // The two sets of inputs
+
+  // State used to check for number of overlapping grandparent files
+  // (parent == level_ + 1, grandparent == level_ + 2)
+  std::vector<FileMetaData*> grandparents_;
+  size_t grandparent_index_;  // Index in grandparent_starts_
+  bool seen_key_;             // Some output key has been seen
+  int64_t overlapped_bytes_;  // Bytes of overlap between current output
+                              // and grandparent files
+
+  // State for implementing IsBaseLevelForKey
+
+  // level_ptrs_ holds indices into input_version_->levels_: our state
+  // is that we are positioned at one of the file ranges for each
+  // higher level than the ones involved in this compaction (i.e. for
+  // all L >= level_ + 2).
+  size_t level_ptrs_[config::kNumLevels];
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_VERSION_SET_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/db/write_batch.cc b/ChattingApp 000/Pods/leveldb-library/db/write_batch.cc
new file mode 100644
index 0000000..2dec642
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/write_batch.cc	
@@ -0,0 +1,150 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// WriteBatch::rep_ :=
+//    sequence: fixed64
+//    count: fixed32
+//    data: record[count]
+// record :=
+//    kTypeValue varstring varstring         |
+//    kTypeDeletion varstring
+// varstring :=
+//    len: varint32
+//    data: uint8[len]
+
+#include "leveldb/write_batch.h"
+
+#include "db/dbformat.h"
+#include "db/memtable.h"
+#include "db/write_batch_internal.h"
+#include "leveldb/db.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+// WriteBatch header has an 8-byte sequence number followed by a 4-byte count.
+static const size_t kHeader = 12;
+
+WriteBatch::WriteBatch() { Clear(); }
+
+WriteBatch::~WriteBatch() {}
+
+WriteBatch::Handler::~Handler() {}
+
+void WriteBatch::Clear() {
+  rep_.clear();
+  rep_.resize(kHeader);
+}
+
+size_t WriteBatch::ApproximateSize() const { return rep_.size(); }
+
+Status WriteBatch::Iterate(Handler* handler) const {
+  Slice input(rep_);
+  if (input.size() < kHeader) {
+    return Status::Corruption("malformed WriteBatch (too small)");
+  }
+
+  input.remove_prefix(kHeader);
+  Slice key, value;
+  int found = 0;
+  while (!input.empty()) {
+    found++;
+    char tag = input[0];
+    input.remove_prefix(1);
+    switch (tag) {
+      case kTypeValue:
+        if (GetLengthPrefixedSlice(&input, &key) &&
+            GetLengthPrefixedSlice(&input, &value)) {
+          handler->Put(key, value);
+        } else {
+          return Status::Corruption("bad WriteBatch Put");
+        }
+        break;
+      case kTypeDeletion:
+        if (GetLengthPrefixedSlice(&input, &key)) {
+          handler->Delete(key);
+        } else {
+          return Status::Corruption("bad WriteBatch Delete");
+        }
+        break;
+      default:
+        return Status::Corruption("unknown WriteBatch tag");
+    }
+  }
+  if (found != WriteBatchInternal::Count(this)) {
+    return Status::Corruption("WriteBatch has wrong count");
+  } else {
+    return Status::OK();
+  }
+}
+
+int WriteBatchInternal::Count(const WriteBatch* b) {
+  return DecodeFixed32(b->rep_.data() + 8);
+}
+
+void WriteBatchInternal::SetCount(WriteBatch* b, int n) {
+  EncodeFixed32(&b->rep_[8], n);
+}
+
+SequenceNumber WriteBatchInternal::Sequence(const WriteBatch* b) {
+  return SequenceNumber(DecodeFixed64(b->rep_.data()));
+}
+
+void WriteBatchInternal::SetSequence(WriteBatch* b, SequenceNumber seq) {
+  EncodeFixed64(&b->rep_[0], seq);
+}
+
+void WriteBatch::Put(const Slice& key, const Slice& value) {
+  WriteBatchInternal::SetCount(this, WriteBatchInternal::Count(this) + 1);
+  rep_.push_back(static_cast<char>(kTypeValue));
+  PutLengthPrefixedSlice(&rep_, key);
+  PutLengthPrefixedSlice(&rep_, value);
+}
+
+void WriteBatch::Delete(const Slice& key) {
+  WriteBatchInternal::SetCount(this, WriteBatchInternal::Count(this) + 1);
+  rep_.push_back(static_cast<char>(kTypeDeletion));
+  PutLengthPrefixedSlice(&rep_, key);
+}
+
+void WriteBatch::Append(const WriteBatch& source) {
+  WriteBatchInternal::Append(this, &source);
+}
+
+namespace {
+class MemTableInserter : public WriteBatch::Handler {
+ public:
+  SequenceNumber sequence_;
+  MemTable* mem_;
+
+  virtual void Put(const Slice& key, const Slice& value) {
+    mem_->Add(sequence_, kTypeValue, key, value);
+    sequence_++;
+  }
+  virtual void Delete(const Slice& key) {
+    mem_->Add(sequence_, kTypeDeletion, key, Slice());
+    sequence_++;
+  }
+};
+}  // namespace
+
+Status WriteBatchInternal::InsertInto(const WriteBatch* b, MemTable* memtable) {
+  MemTableInserter inserter;
+  inserter.sequence_ = WriteBatchInternal::Sequence(b);
+  inserter.mem_ = memtable;
+  return b->Iterate(&inserter);
+}
+
+void WriteBatchInternal::SetContents(WriteBatch* b, const Slice& contents) {
+  assert(contents.size() >= kHeader);
+  b->rep_.assign(contents.data(), contents.size());
+}
+
+void WriteBatchInternal::Append(WriteBatch* dst, const WriteBatch* src) {
+  SetCount(dst, Count(dst) + Count(src));
+  assert(src->rep_.size() >= kHeader);
+  dst->rep_.append(src->rep_.data() + kHeader, src->rep_.size() - kHeader);
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/db/write_batch_internal.h b/ChattingApp 000/Pods/leveldb-library/db/write_batch_internal.h
new file mode 100644
index 0000000..fce86e3
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/db/write_batch_internal.h	
@@ -0,0 +1,45 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_
+#define STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_
+
+#include "db/dbformat.h"
+#include "leveldb/write_batch.h"
+
+namespace leveldb {
+
+class MemTable;
+
+// WriteBatchInternal provides static methods for manipulating a
+// WriteBatch that we don't want in the public WriteBatch interface.
+class WriteBatchInternal {
+ public:
+  // Return the number of entries in the batch.
+  static int Count(const WriteBatch* batch);
+
+  // Set the count for the number of entries in the batch.
+  static void SetCount(WriteBatch* batch, int n);
+
+  // Return the sequence number for the start of this batch.
+  static SequenceNumber Sequence(const WriteBatch* batch);
+
+  // Store the specified number as the sequence number for the start of
+  // this batch.
+  static void SetSequence(WriteBatch* batch, SequenceNumber seq);
+
+  static Slice Contents(const WriteBatch* batch) { return Slice(batch->rep_); }
+
+  static size_t ByteSize(const WriteBatch* batch) { return batch->rep_.size(); }
+
+  static void SetContents(WriteBatch* batch, const Slice& contents);
+
+  static Status InsertInto(const WriteBatch* batch, MemTable* memtable);
+
+  static void Append(WriteBatch* dst, const WriteBatch* src);
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/c.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/c.h
new file mode 100644
index 0000000..8e0d592
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/c.h	
@@ -0,0 +1,270 @@
+/* Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+  Use of this source code is governed by a BSD-style license that can be
+  found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+  C bindings for leveldb.  May be useful as a stable ABI that can be
+  used by programs that keep leveldb in a shared library, or for
+  a JNI api.
+
+  Does not support:
+  . getters for the option types
+  . custom comparators that implement key shortening
+  . custom iter, db, env, cache implementations using just the C bindings
+
+  Some conventions:
+
+  (1) We expose just opaque struct pointers and functions to clients.
+  This allows us to change internal representations without having to
+  recompile clients.
+
+  (2) For simplicity, there is no equivalent to the Slice type.  Instead,
+  the caller has to pass the pointer and length as separate
+  arguments.
+
+  (3) Errors are represented by a null-terminated c string.  NULL
+  means no error.  All operations that can raise an error are passed
+  a "char** errptr" as the last argument.  One of the following must
+  be true on entry:
+     *errptr == NULL
+     *errptr points to a malloc()ed null-terminated error message
+       (On Windows, *errptr must have been malloc()-ed by this library.)
+  On success, a leveldb routine leaves *errptr unchanged.
+  On failure, leveldb frees the old value of *errptr and
+  set *errptr to a malloc()ed error message.
+
+  (4) Bools have the type unsigned char (0 == false; rest == true)
+
+  (5) All of the pointer arguments must be non-NULL.
+*/
+
+#ifndef STORAGE_LEVELDB_INCLUDE_C_H_
+#define STORAGE_LEVELDB_INCLUDE_C_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "leveldb/export.h"
+
+/* Exported types */
+
+typedef struct leveldb_t leveldb_t;
+typedef struct leveldb_cache_t leveldb_cache_t;
+typedef struct leveldb_comparator_t leveldb_comparator_t;
+typedef struct leveldb_env_t leveldb_env_t;
+typedef struct leveldb_filelock_t leveldb_filelock_t;
+typedef struct leveldb_filterpolicy_t leveldb_filterpolicy_t;
+typedef struct leveldb_iterator_t leveldb_iterator_t;
+typedef struct leveldb_logger_t leveldb_logger_t;
+typedef struct leveldb_options_t leveldb_options_t;
+typedef struct leveldb_randomfile_t leveldb_randomfile_t;
+typedef struct leveldb_readoptions_t leveldb_readoptions_t;
+typedef struct leveldb_seqfile_t leveldb_seqfile_t;
+typedef struct leveldb_snapshot_t leveldb_snapshot_t;
+typedef struct leveldb_writablefile_t leveldb_writablefile_t;
+typedef struct leveldb_writebatch_t leveldb_writebatch_t;
+typedef struct leveldb_writeoptions_t leveldb_writeoptions_t;
+
+/* DB operations */
+
+LEVELDB_EXPORT leveldb_t* leveldb_open(const leveldb_options_t* options,
+                                       const char* name, char** errptr);
+
+LEVELDB_EXPORT void leveldb_close(leveldb_t* db);
+
+LEVELDB_EXPORT void leveldb_put(leveldb_t* db,
+                                const leveldb_writeoptions_t* options,
+                                const char* key, size_t keylen, const char* val,
+                                size_t vallen, char** errptr);
+
+LEVELDB_EXPORT void leveldb_delete(leveldb_t* db,
+                                   const leveldb_writeoptions_t* options,
+                                   const char* key, size_t keylen,
+                                   char** errptr);
+
+LEVELDB_EXPORT void leveldb_write(leveldb_t* db,
+                                  const leveldb_writeoptions_t* options,
+                                  leveldb_writebatch_t* batch, char** errptr);
+
+/* Returns NULL if not found.  A malloc()ed array otherwise.
+   Stores the length of the array in *vallen. */
+LEVELDB_EXPORT char* leveldb_get(leveldb_t* db,
+                                 const leveldb_readoptions_t* options,
+                                 const char* key, size_t keylen, size_t* vallen,
+                                 char** errptr);
+
+LEVELDB_EXPORT leveldb_iterator_t* leveldb_create_iterator(
+    leveldb_t* db, const leveldb_readoptions_t* options);
+
+LEVELDB_EXPORT const leveldb_snapshot_t* leveldb_create_snapshot(leveldb_t* db);
+
+LEVELDB_EXPORT void leveldb_release_snapshot(
+    leveldb_t* db, const leveldb_snapshot_t* snapshot);
+
+/* Returns NULL if property name is unknown.
+   Else returns a pointer to a malloc()-ed null-terminated value. */
+LEVELDB_EXPORT char* leveldb_property_value(leveldb_t* db,
+                                            const char* propname);
+
+LEVELDB_EXPORT void leveldb_approximate_sizes(
+    leveldb_t* db, int num_ranges, const char* const* range_start_key,
+    const size_t* range_start_key_len, const char* const* range_limit_key,
+    const size_t* range_limit_key_len, uint64_t* sizes);
+
+LEVELDB_EXPORT void leveldb_compact_range(leveldb_t* db, const char* start_key,
+                                          size_t start_key_len,
+                                          const char* limit_key,
+                                          size_t limit_key_len);
+
+/* Management operations */
+
+LEVELDB_EXPORT void leveldb_destroy_db(const leveldb_options_t* options,
+                                       const char* name, char** errptr);
+
+LEVELDB_EXPORT void leveldb_repair_db(const leveldb_options_t* options,
+                                      const char* name, char** errptr);
+
+/* Iterator */
+
+LEVELDB_EXPORT void leveldb_iter_destroy(leveldb_iterator_t*);
+LEVELDB_EXPORT unsigned char leveldb_iter_valid(const leveldb_iterator_t*);
+LEVELDB_EXPORT void leveldb_iter_seek_to_first(leveldb_iterator_t*);
+LEVELDB_EXPORT void leveldb_iter_seek_to_last(leveldb_iterator_t*);
+LEVELDB_EXPORT void leveldb_iter_seek(leveldb_iterator_t*, const char* k,
+                                      size_t klen);
+LEVELDB_EXPORT void leveldb_iter_next(leveldb_iterator_t*);
+LEVELDB_EXPORT void leveldb_iter_prev(leveldb_iterator_t*);
+LEVELDB_EXPORT const char* leveldb_iter_key(const leveldb_iterator_t*,
+                                            size_t* klen);
+LEVELDB_EXPORT const char* leveldb_iter_value(const leveldb_iterator_t*,
+                                              size_t* vlen);
+LEVELDB_EXPORT void leveldb_iter_get_error(const leveldb_iterator_t*,
+                                           char** errptr);
+
+/* Write batch */
+
+LEVELDB_EXPORT leveldb_writebatch_t* leveldb_writebatch_create();
+LEVELDB_EXPORT void leveldb_writebatch_destroy(leveldb_writebatch_t*);
+LEVELDB_EXPORT void leveldb_writebatch_clear(leveldb_writebatch_t*);
+LEVELDB_EXPORT void leveldb_writebatch_put(leveldb_writebatch_t*,
+                                           const char* key, size_t klen,
+                                           const char* val, size_t vlen);
+LEVELDB_EXPORT void leveldb_writebatch_delete(leveldb_writebatch_t*,
+                                              const char* key, size_t klen);
+LEVELDB_EXPORT void leveldb_writebatch_iterate(
+    const leveldb_writebatch_t*, void* state,
+    void (*put)(void*, const char* k, size_t klen, const char* v, size_t vlen),
+    void (*deleted)(void*, const char* k, size_t klen));
+LEVELDB_EXPORT void leveldb_writebatch_append(
+    leveldb_writebatch_t* destination, const leveldb_writebatch_t* source);
+
+/* Options */
+
+LEVELDB_EXPORT leveldb_options_t* leveldb_options_create();
+LEVELDB_EXPORT void leveldb_options_destroy(leveldb_options_t*);
+LEVELDB_EXPORT void leveldb_options_set_comparator(leveldb_options_t*,
+                                                   leveldb_comparator_t*);
+LEVELDB_EXPORT void leveldb_options_set_filter_policy(leveldb_options_t*,
+                                                      leveldb_filterpolicy_t*);
+LEVELDB_EXPORT void leveldb_options_set_create_if_missing(leveldb_options_t*,
+                                                          unsigned char);
+LEVELDB_EXPORT void leveldb_options_set_error_if_exists(leveldb_options_t*,
+                                                        unsigned char);
+LEVELDB_EXPORT void leveldb_options_set_paranoid_checks(leveldb_options_t*,
+                                                        unsigned char);
+LEVELDB_EXPORT void leveldb_options_set_env(leveldb_options_t*, leveldb_env_t*);
+LEVELDB_EXPORT void leveldb_options_set_info_log(leveldb_options_t*,
+                                                 leveldb_logger_t*);
+LEVELDB_EXPORT void leveldb_options_set_write_buffer_size(leveldb_options_t*,
+                                                          size_t);
+LEVELDB_EXPORT void leveldb_options_set_max_open_files(leveldb_options_t*, int);
+LEVELDB_EXPORT void leveldb_options_set_cache(leveldb_options_t*,
+                                              leveldb_cache_t*);
+LEVELDB_EXPORT void leveldb_options_set_block_size(leveldb_options_t*, size_t);
+LEVELDB_EXPORT void leveldb_options_set_block_restart_interval(
+    leveldb_options_t*, int);
+LEVELDB_EXPORT void leveldb_options_set_max_file_size(leveldb_options_t*,
+                                                      size_t);
+
+enum { leveldb_no_compression = 0, leveldb_snappy_compression = 1 };
+LEVELDB_EXPORT void leveldb_options_set_compression(leveldb_options_t*, int);
+
+/* Comparator */
+
+LEVELDB_EXPORT leveldb_comparator_t* leveldb_comparator_create(
+    void* state, void (*destructor)(void*),
+    int (*compare)(void*, const char* a, size_t alen, const char* b,
+                   size_t blen),
+    const char* (*name)(void*));
+LEVELDB_EXPORT void leveldb_comparator_destroy(leveldb_comparator_t*);
+
+/* Filter policy */
+
+LEVELDB_EXPORT leveldb_filterpolicy_t* leveldb_filterpolicy_create(
+    void* state, void (*destructor)(void*),
+    char* (*create_filter)(void*, const char* const* key_array,
+                           const size_t* key_length_array, int num_keys,
+                           size_t* filter_length),
+    unsigned char (*key_may_match)(void*, const char* key, size_t length,
+                                   const char* filter, size_t filter_length),
+    const char* (*name)(void*));
+LEVELDB_EXPORT void leveldb_filterpolicy_destroy(leveldb_filterpolicy_t*);
+
+LEVELDB_EXPORT leveldb_filterpolicy_t* leveldb_filterpolicy_create_bloom(
+    int bits_per_key);
+
+/* Read options */
+
+LEVELDB_EXPORT leveldb_readoptions_t* leveldb_readoptions_create();
+LEVELDB_EXPORT void leveldb_readoptions_destroy(leveldb_readoptions_t*);
+LEVELDB_EXPORT void leveldb_readoptions_set_verify_checksums(
+    leveldb_readoptions_t*, unsigned char);
+LEVELDB_EXPORT void leveldb_readoptions_set_fill_cache(leveldb_readoptions_t*,
+                                                       unsigned char);
+LEVELDB_EXPORT void leveldb_readoptions_set_snapshot(leveldb_readoptions_t*,
+                                                     const leveldb_snapshot_t*);
+
+/* Write options */
+
+LEVELDB_EXPORT leveldb_writeoptions_t* leveldb_writeoptions_create();
+LEVELDB_EXPORT void leveldb_writeoptions_destroy(leveldb_writeoptions_t*);
+LEVELDB_EXPORT void leveldb_writeoptions_set_sync(leveldb_writeoptions_t*,
+                                                  unsigned char);
+
+/* Cache */
+
+LEVELDB_EXPORT leveldb_cache_t* leveldb_cache_create_lru(size_t capacity);
+LEVELDB_EXPORT void leveldb_cache_destroy(leveldb_cache_t* cache);
+
+/* Env */
+
+LEVELDB_EXPORT leveldb_env_t* leveldb_create_default_env();
+LEVELDB_EXPORT void leveldb_env_destroy(leveldb_env_t*);
+
+/* If not NULL, the returned buffer must be released using leveldb_free(). */
+LEVELDB_EXPORT char* leveldb_env_get_test_directory(leveldb_env_t*);
+
+/* Utility */
+
+/* Calls free(ptr).
+   REQUIRES: ptr was malloc()-ed and returned by one of the routines
+   in this file.  Note that in certain cases (typically on Windows), you
+   may need to call this routine instead of free(ptr) to dispose of
+   malloc()-ed memory returned by this library. */
+LEVELDB_EXPORT void leveldb_free(void* ptr);
+
+/* Return the major version number for this release. */
+LEVELDB_EXPORT int leveldb_major_version();
+
+/* Return the minor version number for this release. */
+LEVELDB_EXPORT int leveldb_minor_version();
+
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif
+
+#endif /* STORAGE_LEVELDB_INCLUDE_C_H_ */
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/cache.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/cache.h
new file mode 100644
index 0000000..7d1a221
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/cache.h	
@@ -0,0 +1,111 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// A Cache is an interface that maps keys to values.  It has internal
+// synchronization and may be safely accessed concurrently from
+// multiple threads.  It may automatically evict entries to make room
+// for new entries.  Values have a specified charge against the cache
+// capacity.  For example, a cache where the values are variable
+// length strings, may use the length of the string as the charge for
+// the string.
+//
+// A builtin cache implementation with a least-recently-used eviction
+// policy is provided.  Clients may use their own implementations if
+// they want something more sophisticated (like scan-resistance, a
+// custom eviction policy, variable cache sizing, etc.)
+
+#ifndef STORAGE_LEVELDB_INCLUDE_CACHE_H_
+#define STORAGE_LEVELDB_INCLUDE_CACHE_H_
+
+#include <stdint.h>
+
+#include "leveldb/export.h"
+#include "leveldb/slice.h"
+
+namespace leveldb {
+
+class LEVELDB_EXPORT Cache;
+
+// Create a new cache with a fixed size capacity.  This implementation
+// of Cache uses a least-recently-used eviction policy.
+LEVELDB_EXPORT Cache* NewLRUCache(size_t capacity);
+
+class LEVELDB_EXPORT Cache {
+ public:
+  Cache() = default;
+
+  Cache(const Cache&) = delete;
+  Cache& operator=(const Cache&) = delete;
+
+  // Destroys all existing entries by calling the "deleter"
+  // function that was passed to the constructor.
+  virtual ~Cache();
+
+  // Opaque handle to an entry stored in the cache.
+  struct Handle {};
+
+  // Insert a mapping from key->value into the cache and assign it
+  // the specified charge against the total cache capacity.
+  //
+  // Returns a handle that corresponds to the mapping.  The caller
+  // must call this->Release(handle) when the returned mapping is no
+  // longer needed.
+  //
+  // When the inserted entry is no longer needed, the key and
+  // value will be passed to "deleter".
+  virtual Handle* Insert(const Slice& key, void* value, size_t charge,
+                         void (*deleter)(const Slice& key, void* value)) = 0;
+
+  // If the cache has no mapping for "key", returns nullptr.
+  //
+  // Else return a handle that corresponds to the mapping.  The caller
+  // must call this->Release(handle) when the returned mapping is no
+  // longer needed.
+  virtual Handle* Lookup(const Slice& key) = 0;
+
+  // Release a mapping returned by a previous Lookup().
+  // REQUIRES: handle must not have been released yet.
+  // REQUIRES: handle must have been returned by a method on *this.
+  virtual void Release(Handle* handle) = 0;
+
+  // Return the value encapsulated in a handle returned by a
+  // successful Lookup().
+  // REQUIRES: handle must not have been released yet.
+  // REQUIRES: handle must have been returned by a method on *this.
+  virtual void* Value(Handle* handle) = 0;
+
+  // If the cache contains entry for key, erase it.  Note that the
+  // underlying entry will be kept around until all existing handles
+  // to it have been released.
+  virtual void Erase(const Slice& key) = 0;
+
+  // Return a new numeric id.  May be used by multiple clients who are
+  // sharing the same cache to partition the key space.  Typically the
+  // client will allocate a new id at startup and prepend the id to
+  // its cache keys.
+  virtual uint64_t NewId() = 0;
+
+  // Remove all cache entries that are not actively in use.  Memory-constrained
+  // applications may wish to call this method to reduce memory usage.
+  // Default implementation of Prune() does nothing.  Subclasses are strongly
+  // encouraged to override the default implementation.  A future release of
+  // leveldb may change Prune() to a pure abstract method.
+  virtual void Prune() {}
+
+  // Return an estimate of the combined charges of all elements stored in the
+  // cache.
+  virtual size_t TotalCharge() const = 0;
+
+ private:
+  void LRU_Remove(Handle* e);
+  void LRU_Append(Handle* e);
+  void Unref(Handle* e);
+
+  struct Rep;
+  Rep* rep_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_CACHE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/comparator.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/comparator.h
new file mode 100644
index 0000000..a85b51e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/comparator.h	
@@ -0,0 +1,64 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_
+#define STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_
+
+#include <string>
+
+#include "leveldb/export.h"
+
+namespace leveldb {
+
+class Slice;
+
+// A Comparator object provides a total order across slices that are
+// used as keys in an sstable or a database.  A Comparator implementation
+// must be thread-safe since leveldb may invoke its methods concurrently
+// from multiple threads.
+class LEVELDB_EXPORT Comparator {
+ public:
+  virtual ~Comparator();
+
+  // Three-way comparison.  Returns value:
+  //   < 0 iff "a" < "b",
+  //   == 0 iff "a" == "b",
+  //   > 0 iff "a" > "b"
+  virtual int Compare(const Slice& a, const Slice& b) const = 0;
+
+  // The name of the comparator.  Used to check for comparator
+  // mismatches (i.e., a DB created with one comparator is
+  // accessed using a different comparator.
+  //
+  // The client of this package should switch to a new name whenever
+  // the comparator implementation changes in a way that will cause
+  // the relative ordering of any two keys to change.
+  //
+  // Names starting with "leveldb." are reserved and should not be used
+  // by any clients of this package.
+  virtual const char* Name() const = 0;
+
+  // Advanced functions: these are used to reduce the space requirements
+  // for internal data structures like index blocks.
+
+  // If *start < limit, changes *start to a short string in [start,limit).
+  // Simple comparator implementations may return with *start unchanged,
+  // i.e., an implementation of this method that does nothing is correct.
+  virtual void FindShortestSeparator(std::string* start,
+                                     const Slice& limit) const = 0;
+
+  // Changes *key to a short string >= *key.
+  // Simple comparator implementations may return with *key unchanged,
+  // i.e., an implementation of this method that does nothing is correct.
+  virtual void FindShortSuccessor(std::string* key) const = 0;
+};
+
+// Return a builtin comparator that uses lexicographic byte-wise
+// ordering.  The result remains the property of this module and
+// must not be deleted.
+LEVELDB_EXPORT const Comparator* BytewiseComparator();
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_COMPARATOR_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/db.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/db.h
new file mode 100644
index 0000000..ea3d9e5
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/db.h	
@@ -0,0 +1,167 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_DB_H_
+#define STORAGE_LEVELDB_INCLUDE_DB_H_
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include "leveldb/export.h"
+#include "leveldb/iterator.h"
+#include "leveldb/options.h"
+
+namespace leveldb {
+
+// Update CMakeLists.txt if you change these
+static const int kMajorVersion = 1;
+static const int kMinorVersion = 22;
+
+struct Options;
+struct ReadOptions;
+struct WriteOptions;
+class WriteBatch;
+
+// Abstract handle to particular state of a DB.
+// A Snapshot is an immutable object and can therefore be safely
+// accessed from multiple threads without any external synchronization.
+class LEVELDB_EXPORT Snapshot {
+ protected:
+  virtual ~Snapshot();
+};
+
+// A range of keys
+struct LEVELDB_EXPORT Range {
+  Range() {}
+  Range(const Slice& s, const Slice& l) : start(s), limit(l) {}
+
+  Slice start;  // Included in the range
+  Slice limit;  // Not included in the range
+};
+
+// A DB is a persistent ordered map from keys to values.
+// A DB is safe for concurrent access from multiple threads without
+// any external synchronization.
+class LEVELDB_EXPORT DB {
+ public:
+  // Open the database with the specified "name".
+  // Stores a pointer to a heap-allocated database in *dbptr and returns
+  // OK on success.
+  // Stores nullptr in *dbptr and returns a non-OK status on error.
+  // Caller should delete *dbptr when it is no longer needed.
+  static Status Open(const Options& options, const std::string& name,
+                     DB** dbptr);
+
+  DB() = default;
+
+  DB(const DB&) = delete;
+  DB& operator=(const DB&) = delete;
+
+  virtual ~DB();
+
+  // Set the database entry for "key" to "value".  Returns OK on success,
+  // and a non-OK status on error.
+  // Note: consider setting options.sync = true.
+  virtual Status Put(const WriteOptions& options, const Slice& key,
+                     const Slice& value) = 0;
+
+  // Remove the database entry (if any) for "key".  Returns OK on
+  // success, and a non-OK status on error.  It is not an error if "key"
+  // did not exist in the database.
+  // Note: consider setting options.sync = true.
+  virtual Status Delete(const WriteOptions& options, const Slice& key) = 0;
+
+  // Apply the specified updates to the database.
+  // Returns OK on success, non-OK on failure.
+  // Note: consider setting options.sync = true.
+  virtual Status Write(const WriteOptions& options, WriteBatch* updates) = 0;
+
+  // If the database contains an entry for "key" store the
+  // corresponding value in *value and return OK.
+  //
+  // If there is no entry for "key" leave *value unchanged and return
+  // a status for which Status::IsNotFound() returns true.
+  //
+  // May return some other Status on an error.
+  virtual Status Get(const ReadOptions& options, const Slice& key,
+                     std::string* value) = 0;
+
+  // Return a heap-allocated iterator over the contents of the database.
+  // The result of NewIterator() is initially invalid (caller must
+  // call one of the Seek methods on the iterator before using it).
+  //
+  // Caller should delete the iterator when it is no longer needed.
+  // The returned iterator should be deleted before this db is deleted.
+  virtual Iterator* NewIterator(const ReadOptions& options) = 0;
+
+  // Return a handle to the current DB state.  Iterators created with
+  // this handle will all observe a stable snapshot of the current DB
+  // state.  The caller must call ReleaseSnapshot(result) when the
+  // snapshot is no longer needed.
+  virtual const Snapshot* GetSnapshot() = 0;
+
+  // Release a previously acquired snapshot.  The caller must not
+  // use "snapshot" after this call.
+  virtual void ReleaseSnapshot(const Snapshot* snapshot) = 0;
+
+  // DB implementations can export properties about their state
+  // via this method.  If "property" is a valid property understood by this
+  // DB implementation, fills "*value" with its current value and returns
+  // true.  Otherwise returns false.
+  //
+  //
+  // Valid property names include:
+  //
+  //  "leveldb.num-files-at-level<N>" - return the number of files at level <N>,
+  //     where <N> is an ASCII representation of a level number (e.g. "0").
+  //  "leveldb.stats" - returns a multi-line string that describes statistics
+  //     about the internal operation of the DB.
+  //  "leveldb.sstables" - returns a multi-line string that describes all
+  //     of the sstables that make up the db contents.
+  //  "leveldb.approximate-memory-usage" - returns the approximate number of
+  //     bytes of memory in use by the DB.
+  virtual bool GetProperty(const Slice& property, std::string* value) = 0;
+
+  // For each i in [0,n-1], store in "sizes[i]", the approximate
+  // file system space used by keys in "[range[i].start .. range[i].limit)".
+  //
+  // Note that the returned sizes measure file system space usage, so
+  // if the user data compresses by a factor of ten, the returned
+  // sizes will be one-tenth the size of the corresponding user data size.
+  //
+  // The results may not include the sizes of recently written data.
+  virtual void GetApproximateSizes(const Range* range, int n,
+                                   uint64_t* sizes) = 0;
+
+  // Compact the underlying storage for the key range [*begin,*end].
+  // In particular, deleted and overwritten versions are discarded,
+  // and the data is rearranged to reduce the cost of operations
+  // needed to access the data.  This operation should typically only
+  // be invoked by users who understand the underlying implementation.
+  //
+  // begin==nullptr is treated as a key before all keys in the database.
+  // end==nullptr is treated as a key after all keys in the database.
+  // Therefore the following call will compact the entire database:
+  //    db->CompactRange(nullptr, nullptr);
+  virtual void CompactRange(const Slice* begin, const Slice* end) = 0;
+};
+
+// Destroy the contents of the specified database.
+// Be very careful using this method.
+//
+// Note: For backwards compatibility, if DestroyDB is unable to list the
+// database files, Status::OK() will still be returned masking this failure.
+LEVELDB_EXPORT Status DestroyDB(const std::string& name,
+                                const Options& options);
+
+// If a DB cannot be opened, you may attempt to call this method to
+// resurrect as much of the contents of the database as possible.
+// Some data may be lost, so be careful when calling this function
+// on a database that contains important information.
+LEVELDB_EXPORT Status RepairDB(const std::string& dbname,
+                               const Options& options);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_DB_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/dumpfile.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/dumpfile.h
new file mode 100644
index 0000000..a58bc6b
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/dumpfile.h	
@@ -0,0 +1,28 @@
+// Copyright (c) 2014 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_
+#define STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_
+
+#include <string>
+
+#include "leveldb/env.h"
+#include "leveldb/export.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+// Dump the contents of the file named by fname in text format to
+// *dst.  Makes a sequence of dst->Append() calls; each call is passed
+// the newline-terminated text corresponding to a single item found
+// in the file.
+//
+// Returns a non-OK result if fname does not name a leveldb storage
+// file, or if the file cannot be read.
+LEVELDB_EXPORT Status DumpFile(Env* env, const std::string& fname,
+                               WritableFile* dst);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_DUMPFILE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/env.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/env.h
new file mode 100644
index 0000000..112fe96
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/env.h	
@@ -0,0 +1,387 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// An Env is an interface used by the leveldb implementation to access
+// operating system functionality like the filesystem etc.  Callers
+// may wish to provide a custom Env object when opening a database to
+// get fine gain control; e.g., to rate limit file system operations.
+//
+// All Env implementations are safe for concurrent access from
+// multiple threads without any external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_ENV_H_
+#define STORAGE_LEVELDB_INCLUDE_ENV_H_
+
+#include <stdarg.h>
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include "leveldb/export.h"
+#include "leveldb/status.h"
+
+#if defined(_WIN32)
+// The leveldb::Env class below contains a DeleteFile method.
+// At the same time, <windows.h>, a fairly popular header
+// file for Windows applications, defines a DeleteFile macro.
+//
+// Without any intervention on our part, the result of this
+// unfortunate coincidence is that the name of the
+// leveldb::Env::DeleteFile method seen by the compiler depends on
+// whether <windows.h> was included before or after the LevelDB
+// headers.
+//
+// To avoid headaches, we undefined DeleteFile (if defined) and
+// redefine it at the bottom of this file. This way <windows.h>
+// can be included before this file (or not at all) and the
+// exported method will always be leveldb::Env::DeleteFile.
+#if defined(DeleteFile)
+#undef DeleteFile
+#define LEVELDB_DELETEFILE_UNDEFINED
+#endif  // defined(DeleteFile)
+#endif  // defined(_WIN32)
+
+namespace leveldb {
+
+class FileLock;
+class Logger;
+class RandomAccessFile;
+class SequentialFile;
+class Slice;
+class WritableFile;
+
+class LEVELDB_EXPORT Env {
+ public:
+  Env() = default;
+
+  Env(const Env&) = delete;
+  Env& operator=(const Env&) = delete;
+
+  virtual ~Env();
+
+  // Return a default environment suitable for the current operating
+  // system.  Sophisticated users may wish to provide their own Env
+  // implementation instead of relying on this default environment.
+  //
+  // The result of Default() belongs to leveldb and must never be deleted.
+  static Env* Default();
+
+  // Create an object that sequentially reads the file with the specified name.
+  // On success, stores a pointer to the new file in *result and returns OK.
+  // On failure stores nullptr in *result and returns non-OK.  If the file does
+  // not exist, returns a non-OK status.  Implementations should return a
+  // NotFound status when the file does not exist.
+  //
+  // The returned file will only be accessed by one thread at a time.
+  virtual Status NewSequentialFile(const std::string& fname,
+                                   SequentialFile** result) = 0;
+
+  // Create an object supporting random-access reads from the file with the
+  // specified name.  On success, stores a pointer to the new file in
+  // *result and returns OK.  On failure stores nullptr in *result and
+  // returns non-OK.  If the file does not exist, returns a non-OK
+  // status.  Implementations should return a NotFound status when the file does
+  // not exist.
+  //
+  // The returned file may be concurrently accessed by multiple threads.
+  virtual Status NewRandomAccessFile(const std::string& fname,
+                                     RandomAccessFile** result) = 0;
+
+  // Create an object that writes to a new file with the specified
+  // name.  Deletes any existing file with the same name and creates a
+  // new file.  On success, stores a pointer to the new file in
+  // *result and returns OK.  On failure stores nullptr in *result and
+  // returns non-OK.
+  //
+  // The returned file will only be accessed by one thread at a time.
+  virtual Status NewWritableFile(const std::string& fname,
+                                 WritableFile** result) = 0;
+
+  // Create an object that either appends to an existing file, or
+  // writes to a new file (if the file does not exist to begin with).
+  // On success, stores a pointer to the new file in *result and
+  // returns OK.  On failure stores nullptr in *result and returns
+  // non-OK.
+  //
+  // The returned file will only be accessed by one thread at a time.
+  //
+  // May return an IsNotSupportedError error if this Env does
+  // not allow appending to an existing file.  Users of Env (including
+  // the leveldb implementation) must be prepared to deal with
+  // an Env that does not support appending.
+  virtual Status NewAppendableFile(const std::string& fname,
+                                   WritableFile** result);
+
+  // Returns true iff the named file exists.
+  virtual bool FileExists(const std::string& fname) = 0;
+
+  // Store in *result the names of the children of the specified directory.
+  // The names are relative to "dir".
+  // Original contents of *results are dropped.
+  virtual Status GetChildren(const std::string& dir,
+                             std::vector<std::string>* result) = 0;
+
+  // Delete the named file.
+  virtual Status DeleteFile(const std::string& fname) = 0;
+
+  // Create the specified directory.
+  virtual Status CreateDir(const std::string& dirname) = 0;
+
+  // Delete the specified directory.
+  virtual Status DeleteDir(const std::string& dirname) = 0;
+
+  // Store the size of fname in *file_size.
+  virtual Status GetFileSize(const std::string& fname, uint64_t* file_size) = 0;
+
+  // Rename file src to target.
+  virtual Status RenameFile(const std::string& src,
+                            const std::string& target) = 0;
+
+  // Lock the specified file.  Used to prevent concurrent access to
+  // the same db by multiple processes.  On failure, stores nullptr in
+  // *lock and returns non-OK.
+  //
+  // On success, stores a pointer to the object that represents the
+  // acquired lock in *lock and returns OK.  The caller should call
+  // UnlockFile(*lock) to release the lock.  If the process exits,
+  // the lock will be automatically released.
+  //
+  // If somebody else already holds the lock, finishes immediately
+  // with a failure.  I.e., this call does not wait for existing locks
+  // to go away.
+  //
+  // May create the named file if it does not already exist.
+  virtual Status LockFile(const std::string& fname, FileLock** lock) = 0;
+
+  // Release the lock acquired by a previous successful call to LockFile.
+  // REQUIRES: lock was returned by a successful LockFile() call
+  // REQUIRES: lock has not already been unlocked.
+  virtual Status UnlockFile(FileLock* lock) = 0;
+
+  // Arrange to run "(*function)(arg)" once in a background thread.
+  //
+  // "function" may run in an unspecified thread.  Multiple functions
+  // added to the same Env may run concurrently in different threads.
+  // I.e., the caller may not assume that background work items are
+  // serialized.
+  virtual void Schedule(void (*function)(void* arg), void* arg) = 0;
+
+  // Start a new thread, invoking "function(arg)" within the new thread.
+  // When "function(arg)" returns, the thread will be destroyed.
+  virtual void StartThread(void (*function)(void* arg), void* arg) = 0;
+
+  // *path is set to a temporary directory that can be used for testing. It may
+  // or may not have just been created. The directory may or may not differ
+  // between runs of the same process, but subsequent calls will return the
+  // same directory.
+  virtual Status GetTestDirectory(std::string* path) = 0;
+
+  // Create and return a log file for storing informational messages.
+  virtual Status NewLogger(const std::string& fname, Logger** result) = 0;
+
+  // Returns the number of micro-seconds since some fixed point in time. Only
+  // useful for computing deltas of time.
+  virtual uint64_t NowMicros() = 0;
+
+  // Sleep/delay the thread for the prescribed number of micro-seconds.
+  virtual void SleepForMicroseconds(int micros) = 0;
+};
+
+// A file abstraction for reading sequentially through a file
+class LEVELDB_EXPORT SequentialFile {
+ public:
+  SequentialFile() = default;
+
+  SequentialFile(const SequentialFile&) = delete;
+  SequentialFile& operator=(const SequentialFile&) = delete;
+
+  virtual ~SequentialFile();
+
+  // Read up to "n" bytes from the file.  "scratch[0..n-1]" may be
+  // written by this routine.  Sets "*result" to the data that was
+  // read (including if fewer than "n" bytes were successfully read).
+  // May set "*result" to point at data in "scratch[0..n-1]", so
+  // "scratch[0..n-1]" must be live when "*result" is used.
+  // If an error was encountered, returns a non-OK status.
+  //
+  // REQUIRES: External synchronization
+  virtual Status Read(size_t n, Slice* result, char* scratch) = 0;
+
+  // Skip "n" bytes from the file. This is guaranteed to be no
+  // slower that reading the same data, but may be faster.
+  //
+  // If end of file is reached, skipping will stop at the end of the
+  // file, and Skip will return OK.
+  //
+  // REQUIRES: External synchronization
+  virtual Status Skip(uint64_t n) = 0;
+};
+
+// A file abstraction for randomly reading the contents of a file.
+class LEVELDB_EXPORT RandomAccessFile {
+ public:
+  RandomAccessFile() = default;
+
+  RandomAccessFile(const RandomAccessFile&) = delete;
+  RandomAccessFile& operator=(const RandomAccessFile&) = delete;
+
+  virtual ~RandomAccessFile();
+
+  // Read up to "n" bytes from the file starting at "offset".
+  // "scratch[0..n-1]" may be written by this routine.  Sets "*result"
+  // to the data that was read (including if fewer than "n" bytes were
+  // successfully read).  May set "*result" to point at data in
+  // "scratch[0..n-1]", so "scratch[0..n-1]" must be live when
+  // "*result" is used.  If an error was encountered, returns a non-OK
+  // status.
+  //
+  // Safe for concurrent use by multiple threads.
+  virtual Status Read(uint64_t offset, size_t n, Slice* result,
+                      char* scratch) const = 0;
+};
+
+// A file abstraction for sequential writing.  The implementation
+// must provide buffering since callers may append small fragments
+// at a time to the file.
+class LEVELDB_EXPORT WritableFile {
+ public:
+  WritableFile() = default;
+
+  WritableFile(const WritableFile&) = delete;
+  WritableFile& operator=(const WritableFile&) = delete;
+
+  virtual ~WritableFile();
+
+  virtual Status Append(const Slice& data) = 0;
+  virtual Status Close() = 0;
+  virtual Status Flush() = 0;
+  virtual Status Sync() = 0;
+};
+
+// An interface for writing log messages.
+class LEVELDB_EXPORT Logger {
+ public:
+  Logger() = default;
+
+  Logger(const Logger&) = delete;
+  Logger& operator=(const Logger&) = delete;
+
+  virtual ~Logger();
+
+  // Write an entry to the log file with the specified format.
+  virtual void Logv(const char* format, va_list ap) = 0;
+};
+
+// Identifies a locked file.
+class LEVELDB_EXPORT FileLock {
+ public:
+  FileLock() = default;
+
+  FileLock(const FileLock&) = delete;
+  FileLock& operator=(const FileLock&) = delete;
+
+  virtual ~FileLock();
+};
+
+// Log the specified data to *info_log if info_log is non-null.
+void Log(Logger* info_log, const char* format, ...)
+#if defined(__GNUC__) || defined(__clang__)
+    __attribute__((__format__(__printf__, 2, 3)))
+#endif
+    ;
+
+// A utility routine: write "data" to the named file.
+LEVELDB_EXPORT Status WriteStringToFile(Env* env, const Slice& data,
+                                        const std::string& fname);
+
+// A utility routine: read contents of named file into *data
+LEVELDB_EXPORT Status ReadFileToString(Env* env, const std::string& fname,
+                                       std::string* data);
+
+// An implementation of Env that forwards all calls to another Env.
+// May be useful to clients who wish to override just part of the
+// functionality of another Env.
+class LEVELDB_EXPORT EnvWrapper : public Env {
+ public:
+  // Initialize an EnvWrapper that delegates all calls to *t.
+  explicit EnvWrapper(Env* t) : target_(t) {}
+  virtual ~EnvWrapper();
+
+  // Return the target to which this Env forwards all calls.
+  Env* target() const { return target_; }
+
+  // The following text is boilerplate that forwards all methods to target().
+  Status NewSequentialFile(const std::string& f, SequentialFile** r) override {
+    return target_->NewSequentialFile(f, r);
+  }
+  Status NewRandomAccessFile(const std::string& f,
+                             RandomAccessFile** r) override {
+    return target_->NewRandomAccessFile(f, r);
+  }
+  Status NewWritableFile(const std::string& f, WritableFile** r) override {
+    return target_->NewWritableFile(f, r);
+  }
+  Status NewAppendableFile(const std::string& f, WritableFile** r) override {
+    return target_->NewAppendableFile(f, r);
+  }
+  bool FileExists(const std::string& f) override {
+    return target_->FileExists(f);
+  }
+  Status GetChildren(const std::string& dir,
+                     std::vector<std::string>* r) override {
+    return target_->GetChildren(dir, r);
+  }
+  Status DeleteFile(const std::string& f) override {
+    return target_->DeleteFile(f);
+  }
+  Status CreateDir(const std::string& d) override {
+    return target_->CreateDir(d);
+  }
+  Status DeleteDir(const std::string& d) override {
+    return target_->DeleteDir(d);
+  }
+  Status GetFileSize(const std::string& f, uint64_t* s) override {
+    return target_->GetFileSize(f, s);
+  }
+  Status RenameFile(const std::string& s, const std::string& t) override {
+    return target_->RenameFile(s, t);
+  }
+  Status LockFile(const std::string& f, FileLock** l) override {
+    return target_->LockFile(f, l);
+  }
+  Status UnlockFile(FileLock* l) override { return target_->UnlockFile(l); }
+  void Schedule(void (*f)(void*), void* a) override {
+    return target_->Schedule(f, a);
+  }
+  void StartThread(void (*f)(void*), void* a) override {
+    return target_->StartThread(f, a);
+  }
+  Status GetTestDirectory(std::string* path) override {
+    return target_->GetTestDirectory(path);
+  }
+  Status NewLogger(const std::string& fname, Logger** result) override {
+    return target_->NewLogger(fname, result);
+  }
+  uint64_t NowMicros() override { return target_->NowMicros(); }
+  void SleepForMicroseconds(int micros) override {
+    target_->SleepForMicroseconds(micros);
+  }
+
+ private:
+  Env* target_;
+};
+
+}  // namespace leveldb
+
+// Redefine DeleteFile if necessary.
+#if defined(_WIN32) && defined(LEVELDB_DELETEFILE_UNDEFINED)
+#if defined(UNICODE)
+#define DeleteFile DeleteFileW
+#else
+#define DeleteFile DeleteFileA
+#endif  // defined(UNICODE)
+#endif  // defined(_WIN32) && defined(LEVELDB_DELETEFILE_UNDEFINED)
+
+#endif  // STORAGE_LEVELDB_INCLUDE_ENV_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/export.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/export.h
new file mode 100644
index 0000000..6ba9b18
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/export.h	
@@ -0,0 +1,33 @@
+// Copyright (c) 2017 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_EXPORT_H_
+#define STORAGE_LEVELDB_INCLUDE_EXPORT_H_
+
+#if !defined(LEVELDB_EXPORT)
+
+#if defined(LEVELDB_SHARED_LIBRARY)
+#if defined(_WIN32)
+
+#if defined(LEVELDB_COMPILE_LIBRARY)
+#define LEVELDB_EXPORT __declspec(dllexport)
+#else
+#define LEVELDB_EXPORT __declspec(dllimport)
+#endif  // defined(LEVELDB_COMPILE_LIBRARY)
+
+#else  // defined(_WIN32)
+#if defined(LEVELDB_COMPILE_LIBRARY)
+#define LEVELDB_EXPORT __attribute__((visibility("default")))
+#else
+#define LEVELDB_EXPORT
+#endif
+#endif  // defined(_WIN32)
+
+#else  // defined(LEVELDB_SHARED_LIBRARY)
+#define LEVELDB_EXPORT
+#endif
+
+#endif  // !defined(LEVELDB_EXPORT)
+
+#endif  // STORAGE_LEVELDB_INCLUDE_EXPORT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/filter_policy.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/filter_policy.h
new file mode 100644
index 0000000..49c8eda
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/filter_policy.h	
@@ -0,0 +1,72 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// A database can be configured with a custom FilterPolicy object.
+// This object is responsible for creating a small filter from a set
+// of keys.  These filters are stored in leveldb and are consulted
+// automatically by leveldb to decide whether or not to read some
+// information from disk. In many cases, a filter can cut down the
+// number of disk seeks form a handful to a single disk seek per
+// DB::Get() call.
+//
+// Most people will want to use the builtin bloom filter support (see
+// NewBloomFilterPolicy() below).
+
+#ifndef STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_
+#define STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_
+
+#include <string>
+
+#include "leveldb/export.h"
+
+namespace leveldb {
+
+class Slice;
+
+class LEVELDB_EXPORT FilterPolicy {
+ public:
+  virtual ~FilterPolicy();
+
+  // Return the name of this policy.  Note that if the filter encoding
+  // changes in an incompatible way, the name returned by this method
+  // must be changed.  Otherwise, old incompatible filters may be
+  // passed to methods of this type.
+  virtual const char* Name() const = 0;
+
+  // keys[0,n-1] contains a list of keys (potentially with duplicates)
+  // that are ordered according to the user supplied comparator.
+  // Append a filter that summarizes keys[0,n-1] to *dst.
+  //
+  // Warning: do not change the initial contents of *dst.  Instead,
+  // append the newly constructed filter to *dst.
+  virtual void CreateFilter(const Slice* keys, int n,
+                            std::string* dst) const = 0;
+
+  // "filter" contains the data appended by a preceding call to
+  // CreateFilter() on this class.  This method must return true if
+  // the key was in the list of keys passed to CreateFilter().
+  // This method may return true or false if the key was not on the
+  // list, but it should aim to return false with a high probability.
+  virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const = 0;
+};
+
+// Return a new filter policy that uses a bloom filter with approximately
+// the specified number of bits per key.  A good value for bits_per_key
+// is 10, which yields a filter with ~ 1% false positive rate.
+//
+// Callers must delete the result after any database that is using the
+// result has been closed.
+//
+// Note: if you are using a custom comparator that ignores some parts
+// of the keys being compared, you must not use NewBloomFilterPolicy()
+// and must provide your own FilterPolicy that also ignores the
+// corresponding parts of the keys.  For example, if the comparator
+// ignores trailing spaces, it would be incorrect to use a
+// FilterPolicy (like NewBloomFilterPolicy) that does not ignore
+// trailing spaces in keys.
+LEVELDB_EXPORT const FilterPolicy* NewBloomFilterPolicy(int bits_per_key);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_FILTER_POLICY_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/iterator.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/iterator.h
new file mode 100644
index 0000000..bb9a5df
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/iterator.h	
@@ -0,0 +1,112 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// An iterator yields a sequence of key/value pairs from a source.
+// The following class defines the interface.  Multiple implementations
+// are provided by this library.  In particular, iterators are provided
+// to access the contents of a Table or a DB.
+//
+// Multiple threads can invoke const methods on an Iterator without
+// external synchronization, but if any of the threads may call a
+// non-const method, all threads accessing the same Iterator must use
+// external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_ITERATOR_H_
+#define STORAGE_LEVELDB_INCLUDE_ITERATOR_H_
+
+#include "leveldb/export.h"
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+class LEVELDB_EXPORT Iterator {
+ public:
+  Iterator();
+
+  Iterator(const Iterator&) = delete;
+  Iterator& operator=(const Iterator&) = delete;
+
+  virtual ~Iterator();
+
+  // An iterator is either positioned at a key/value pair, or
+  // not valid.  This method returns true iff the iterator is valid.
+  virtual bool Valid() const = 0;
+
+  // Position at the first key in the source.  The iterator is Valid()
+  // after this call iff the source is not empty.
+  virtual void SeekToFirst() = 0;
+
+  // Position at the last key in the source.  The iterator is
+  // Valid() after this call iff the source is not empty.
+  virtual void SeekToLast() = 0;
+
+  // Position at the first key in the source that is at or past target.
+  // The iterator is Valid() after this call iff the source contains
+  // an entry that comes at or past target.
+  virtual void Seek(const Slice& target) = 0;
+
+  // Moves to the next entry in the source.  After this call, Valid() is
+  // true iff the iterator was not positioned at the last entry in the source.
+  // REQUIRES: Valid()
+  virtual void Next() = 0;
+
+  // Moves to the previous entry in the source.  After this call, Valid() is
+  // true iff the iterator was not positioned at the first entry in source.
+  // REQUIRES: Valid()
+  virtual void Prev() = 0;
+
+  // Return the key for the current entry.  The underlying storage for
+  // the returned slice is valid only until the next modification of
+  // the iterator.
+  // REQUIRES: Valid()
+  virtual Slice key() const = 0;
+
+  // Return the value for the current entry.  The underlying storage for
+  // the returned slice is valid only until the next modification of
+  // the iterator.
+  // REQUIRES: Valid()
+  virtual Slice value() const = 0;
+
+  // If an error has occurred, return it.  Else return an ok status.
+  virtual Status status() const = 0;
+
+  // Clients are allowed to register function/arg1/arg2 triples that
+  // will be invoked when this iterator is destroyed.
+  //
+  // Note that unlike all of the preceding methods, this method is
+  // not abstract and therefore clients should not override it.
+  using CleanupFunction = void (*)(void* arg1, void* arg2);
+  void RegisterCleanup(CleanupFunction function, void* arg1, void* arg2);
+
+ private:
+  // Cleanup functions are stored in a single-linked list.
+  // The list's head node is inlined in the iterator.
+  struct CleanupNode {
+    // True if the node is not used. Only head nodes might be unused.
+    bool IsEmpty() const { return function == nullptr; }
+    // Invokes the cleanup function.
+    void Run() {
+      assert(function != nullptr);
+      (*function)(arg1, arg2);
+    }
+
+    // The head node is used if the function pointer is not null.
+    CleanupFunction function;
+    void* arg1;
+    void* arg2;
+    CleanupNode* next;
+  };
+  CleanupNode cleanup_head_;
+};
+
+// Return an empty iterator (yields nothing).
+LEVELDB_EXPORT Iterator* NewEmptyIterator();
+
+// Return an empty iterator with the specified status.
+LEVELDB_EXPORT Iterator* NewErrorIterator(const Status& status);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_ITERATOR_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/options.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/options.h
new file mode 100644
index 0000000..b748772
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/options.h	
@@ -0,0 +1,187 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_OPTIONS_H_
+#define STORAGE_LEVELDB_INCLUDE_OPTIONS_H_
+
+#include <stddef.h>
+
+#include "leveldb/export.h"
+
+namespace leveldb {
+
+class Cache;
+class Comparator;
+class Env;
+class FilterPolicy;
+class Logger;
+class Snapshot;
+
+// DB contents are stored in a set of blocks, each of which holds a
+// sequence of key,value pairs.  Each block may be compressed before
+// being stored in a file.  The following enum describes which
+// compression method (if any) is used to compress a block.
+enum CompressionType {
+  // NOTE: do not change the values of existing entries, as these are
+  // part of the persistent format on disk.
+  kNoCompression = 0x0,
+  kSnappyCompression = 0x1
+};
+
+// Options to control the behavior of a database (passed to DB::Open)
+struct LEVELDB_EXPORT Options {
+  // Create an Options object with default values for all fields.
+  Options();
+
+  // -------------------
+  // Parameters that affect behavior
+
+  // Comparator used to define the order of keys in the table.
+  // Default: a comparator that uses lexicographic byte-wise ordering
+  //
+  // REQUIRES: The client must ensure that the comparator supplied
+  // here has the same name and orders keys *exactly* the same as the
+  // comparator provided to previous open calls on the same DB.
+  const Comparator* comparator;
+
+  // If true, the database will be created if it is missing.
+  bool create_if_missing = false;
+
+  // If true, an error is raised if the database already exists.
+  bool error_if_exists = false;
+
+  // If true, the implementation will do aggressive checking of the
+  // data it is processing and will stop early if it detects any
+  // errors.  This may have unforeseen ramifications: for example, a
+  // corruption of one DB entry may cause a large number of entries to
+  // become unreadable or for the entire DB to become unopenable.
+  bool paranoid_checks = false;
+
+  // Use the specified object to interact with the environment,
+  // e.g. to read/write files, schedule background work, etc.
+  // Default: Env::Default()
+  Env* env;
+
+  // Any internal progress/error information generated by the db will
+  // be written to info_log if it is non-null, or to a file stored
+  // in the same directory as the DB contents if info_log is null.
+  Logger* info_log = nullptr;
+
+  // -------------------
+  // Parameters that affect performance
+
+  // Amount of data to build up in memory (backed by an unsorted log
+  // on disk) before converting to a sorted on-disk file.
+  //
+  // Larger values increase performance, especially during bulk loads.
+  // Up to two write buffers may be held in memory at the same time,
+  // so you may wish to adjust this parameter to control memory usage.
+  // Also, a larger write buffer will result in a longer recovery time
+  // the next time the database is opened.
+  size_t write_buffer_size = 4 * 1024 * 1024;
+
+  // Number of open files that can be used by the DB.  You may need to
+  // increase this if your database has a large working set (budget
+  // one open file per 2MB of working set).
+  int max_open_files = 1000;
+
+  // Control over blocks (user data is stored in a set of blocks, and
+  // a block is the unit of reading from disk).
+
+  // If non-null, use the specified cache for blocks.
+  // If null, leveldb will automatically create and use an 8MB internal cache.
+  Cache* block_cache = nullptr;
+
+  // Approximate size of user data packed per block.  Note that the
+  // block size specified here corresponds to uncompressed data.  The
+  // actual size of the unit read from disk may be smaller if
+  // compression is enabled.  This parameter can be changed dynamically.
+  size_t block_size = 4 * 1024;
+
+  // Number of keys between restart points for delta encoding of keys.
+  // This parameter can be changed dynamically.  Most clients should
+  // leave this parameter alone.
+  int block_restart_interval = 16;
+
+  // Leveldb will write up to this amount of bytes to a file before
+  // switching to a new one.
+  // Most clients should leave this parameter alone.  However if your
+  // filesystem is more efficient with larger files, you could
+  // consider increasing the value.  The downside will be longer
+  // compactions and hence longer latency/performance hiccups.
+  // Another reason to increase this parameter might be when you are
+  // initially populating a large database.
+  size_t max_file_size = 2 * 1024 * 1024;
+
+  // Compress blocks using the specified compression algorithm.  This
+  // parameter can be changed dynamically.
+  //
+  // Default: kSnappyCompression, which gives lightweight but fast
+  // compression.
+  //
+  // Typical speeds of kSnappyCompression on an Intel(R) Core(TM)2 2.4GHz:
+  //    ~200-500MB/s compression
+  //    ~400-800MB/s decompression
+  // Note that these speeds are significantly faster than most
+  // persistent storage speeds, and therefore it is typically never
+  // worth switching to kNoCompression.  Even if the input data is
+  // incompressible, the kSnappyCompression implementation will
+  // efficiently detect that and will switch to uncompressed mode.
+  CompressionType compression = kSnappyCompression;
+
+  // EXPERIMENTAL: If true, append to existing MANIFEST and log files
+  // when a database is opened.  This can significantly speed up open.
+  //
+  // Default: currently false, but may become true later.
+  bool reuse_logs = false;
+
+  // If non-null, use the specified filter policy to reduce disk reads.
+  // Many applications will benefit from passing the result of
+  // NewBloomFilterPolicy() here.
+  const FilterPolicy* filter_policy = nullptr;
+};
+
+// Options that control read operations
+struct LEVELDB_EXPORT ReadOptions {
+  ReadOptions() = default;
+
+  // If true, all data read from underlying storage will be
+  // verified against corresponding checksums.
+  bool verify_checksums = false;
+
+  // Should the data read for this iteration be cached in memory?
+  // Callers may wish to set this field to false for bulk scans.
+  bool fill_cache = true;
+
+  // If "snapshot" is non-null, read as of the supplied snapshot
+  // (which must belong to the DB that is being read and which must
+  // not have been released).  If "snapshot" is null, use an implicit
+  // snapshot of the state at the beginning of this read operation.
+  const Snapshot* snapshot = nullptr;
+};
+
+// Options that control write operations
+struct LEVELDB_EXPORT WriteOptions {
+  WriteOptions() = default;
+
+  // If true, the write will be flushed from the operating system
+  // buffer cache (by calling WritableFile::Sync()) before the write
+  // is considered complete.  If this flag is true, writes will be
+  // slower.
+  //
+  // If this flag is false, and the machine crashes, some recent
+  // writes may be lost.  Note that if it is just the process that
+  // crashes (i.e., the machine does not reboot), no writes will be
+  // lost even if sync==false.
+  //
+  // In other words, a DB write with sync==false has similar
+  // crash semantics as the "write()" system call.  A DB write
+  // with sync==true has similar crash semantics to a "write()"
+  // system call followed by "fsync()".
+  bool sync = false;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_OPTIONS_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/slice.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/slice.h
new file mode 100644
index 0000000..2df417d
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/slice.h	
@@ -0,0 +1,115 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Slice is a simple structure containing a pointer into some external
+// storage and a size.  The user of a Slice must ensure that the slice
+// is not used after the corresponding external storage has been
+// deallocated.
+//
+// Multiple threads can invoke const methods on a Slice without
+// external synchronization, but if any of the threads may call a
+// non-const method, all threads accessing the same Slice must use
+// external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_SLICE_H_
+#define STORAGE_LEVELDB_INCLUDE_SLICE_H_
+
+#include <assert.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <string>
+
+#include "leveldb/export.h"
+
+namespace leveldb {
+
+class LEVELDB_EXPORT Slice {
+ public:
+  // Create an empty slice.
+  Slice() : data_(""), size_(0) {}
+
+  // Create a slice that refers to d[0,n-1].
+  Slice(const char* d, size_t n) : data_(d), size_(n) {}
+
+  // Create a slice that refers to the contents of "s"
+  Slice(const std::string& s) : data_(s.data()), size_(s.size()) {}
+
+  // Create a slice that refers to s[0,strlen(s)-1]
+  Slice(const char* s) : data_(s), size_(strlen(s)) {}
+
+  // Intentionally copyable.
+  Slice(const Slice&) = default;
+  Slice& operator=(const Slice&) = default;
+
+  // Return a pointer to the beginning of the referenced data
+  const char* data() const { return data_; }
+
+  // Return the length (in bytes) of the referenced data
+  size_t size() const { return size_; }
+
+  // Return true iff the length of the referenced data is zero
+  bool empty() const { return size_ == 0; }
+
+  // Return the ith byte in the referenced data.
+  // REQUIRES: n < size()
+  char operator[](size_t n) const {
+    assert(n < size());
+    return data_[n];
+  }
+
+  // Change this slice to refer to an empty array
+  void clear() {
+    data_ = "";
+    size_ = 0;
+  }
+
+  // Drop the first "n" bytes from this slice.
+  void remove_prefix(size_t n) {
+    assert(n <= size());
+    data_ += n;
+    size_ -= n;
+  }
+
+  // Return a string that contains the copy of the referenced data.
+  std::string ToString() const { return std::string(data_, size_); }
+
+  // Three-way comparison.  Returns value:
+  //   <  0 iff "*this" <  "b",
+  //   == 0 iff "*this" == "b",
+  //   >  0 iff "*this" >  "b"
+  int compare(const Slice& b) const;
+
+  // Return true iff "x" is a prefix of "*this"
+  bool starts_with(const Slice& x) const {
+    return ((size_ >= x.size_) && (memcmp(data_, x.data_, x.size_) == 0));
+  }
+
+ private:
+  const char* data_;
+  size_t size_;
+};
+
+inline bool operator==(const Slice& x, const Slice& y) {
+  return ((x.size() == y.size()) &&
+          (memcmp(x.data(), y.data(), x.size()) == 0));
+}
+
+inline bool operator!=(const Slice& x, const Slice& y) { return !(x == y); }
+
+inline int Slice::compare(const Slice& b) const {
+  const size_t min_len = (size_ < b.size_) ? size_ : b.size_;
+  int r = memcmp(data_, b.data_, min_len);
+  if (r == 0) {
+    if (size_ < b.size_)
+      r = -1;
+    else if (size_ > b.size_)
+      r = +1;
+  }
+  return r;
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_SLICE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/status.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/status.h
new file mode 100644
index 0000000..e327314
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/status.h	
@@ -0,0 +1,122 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// A Status encapsulates the result of an operation.  It may indicate success,
+// or it may indicate an error with an associated error message.
+//
+// Multiple threads can invoke const methods on a Status without
+// external synchronization, but if any of the threads may call a
+// non-const method, all threads accessing the same Status must use
+// external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_STATUS_H_
+#define STORAGE_LEVELDB_INCLUDE_STATUS_H_
+
+#include <algorithm>
+#include <string>
+
+#include "leveldb/export.h"
+#include "leveldb/slice.h"
+
+namespace leveldb {
+
+class LEVELDB_EXPORT Status {
+ public:
+  // Create a success status.
+  Status() noexcept : state_(nullptr) {}
+  ~Status() { delete[] state_; }
+
+  Status(const Status& rhs);
+  Status& operator=(const Status& rhs);
+
+  Status(Status&& rhs) noexcept : state_(rhs.state_) { rhs.state_ = nullptr; }
+  Status& operator=(Status&& rhs) noexcept;
+
+  // Return a success status.
+  static Status OK() { return Status(); }
+
+  // Return error status of an appropriate type.
+  static Status NotFound(const Slice& msg, const Slice& msg2 = Slice()) {
+    return Status(kNotFound, msg, msg2);
+  }
+  static Status Corruption(const Slice& msg, const Slice& msg2 = Slice()) {
+    return Status(kCorruption, msg, msg2);
+  }
+  static Status NotSupported(const Slice& msg, const Slice& msg2 = Slice()) {
+    return Status(kNotSupported, msg, msg2);
+  }
+  static Status InvalidArgument(const Slice& msg, const Slice& msg2 = Slice()) {
+    return Status(kInvalidArgument, msg, msg2);
+  }
+  static Status IOError(const Slice& msg, const Slice& msg2 = Slice()) {
+    return Status(kIOError, msg, msg2);
+  }
+
+  // Returns true iff the status indicates success.
+  bool ok() const { return (state_ == nullptr); }
+
+  // Returns true iff the status indicates a NotFound error.
+  bool IsNotFound() const { return code() == kNotFound; }
+
+  // Returns true iff the status indicates a Corruption error.
+  bool IsCorruption() const { return code() == kCorruption; }
+
+  // Returns true iff the status indicates an IOError.
+  bool IsIOError() const { return code() == kIOError; }
+
+  // Returns true iff the status indicates a NotSupportedError.
+  bool IsNotSupportedError() const { return code() == kNotSupported; }
+
+  // Returns true iff the status indicates an InvalidArgument.
+  bool IsInvalidArgument() const { return code() == kInvalidArgument; }
+
+  // Return a string representation of this status suitable for printing.
+  // Returns the string "OK" for success.
+  std::string ToString() const;
+
+ private:
+  enum Code {
+    kOk = 0,
+    kNotFound = 1,
+    kCorruption = 2,
+    kNotSupported = 3,
+    kInvalidArgument = 4,
+    kIOError = 5
+  };
+
+  Code code() const {
+    return (state_ == nullptr) ? kOk : static_cast<Code>(state_[4]);
+  }
+
+  Status(Code code, const Slice& msg, const Slice& msg2);
+  static const char* CopyState(const char* s);
+
+  // OK status has a null state_.  Otherwise, state_ is a new[] array
+  // of the following form:
+  //    state_[0..3] == length of message
+  //    state_[4]    == code
+  //    state_[5..]  == message
+  const char* state_;
+};
+
+inline Status::Status(const Status& rhs) {
+  state_ = (rhs.state_ == nullptr) ? nullptr : CopyState(rhs.state_);
+}
+inline Status& Status::operator=(const Status& rhs) {
+  // The following condition catches both aliasing (when this == &rhs),
+  // and the common case where both rhs and *this are ok.
+  if (state_ != rhs.state_) {
+    delete[] state_;
+    state_ = (rhs.state_ == nullptr) ? nullptr : CopyState(rhs.state_);
+  }
+  return *this;
+}
+inline Status& Status::operator=(Status&& rhs) noexcept {
+  std::swap(state_, rhs.state_);
+  return *this;
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_STATUS_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/table.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/table.h
new file mode 100644
index 0000000..25c6013
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/table.h	
@@ -0,0 +1,84 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_TABLE_H_
+#define STORAGE_LEVELDB_INCLUDE_TABLE_H_
+
+#include <stdint.h>
+
+#include "leveldb/export.h"
+#include "leveldb/iterator.h"
+
+namespace leveldb {
+
+class Block;
+class BlockHandle;
+class Footer;
+struct Options;
+class RandomAccessFile;
+struct ReadOptions;
+class TableCache;
+
+// A Table is a sorted map from strings to strings.  Tables are
+// immutable and persistent.  A Table may be safely accessed from
+// multiple threads without external synchronization.
+class LEVELDB_EXPORT Table {
+ public:
+  // Attempt to open the table that is stored in bytes [0..file_size)
+  // of "file", and read the metadata entries necessary to allow
+  // retrieving data from the table.
+  //
+  // If successful, returns ok and sets "*table" to the newly opened
+  // table.  The client should delete "*table" when no longer needed.
+  // If there was an error while initializing the table, sets "*table"
+  // to nullptr and returns a non-ok status.  Does not take ownership of
+  // "*source", but the client must ensure that "source" remains live
+  // for the duration of the returned table's lifetime.
+  //
+  // *file must remain live while this Table is in use.
+  static Status Open(const Options& options, RandomAccessFile* file,
+                     uint64_t file_size, Table** table);
+
+  Table(const Table&) = delete;
+  Table& operator=(const Table&) = delete;
+
+  ~Table();
+
+  // Returns a new iterator over the table contents.
+  // The result of NewIterator() is initially invalid (caller must
+  // call one of the Seek methods on the iterator before using it).
+  Iterator* NewIterator(const ReadOptions&) const;
+
+  // Given a key, return an approximate byte offset in the file where
+  // the data for that key begins (or would begin if the key were
+  // present in the file).  The returned value is in terms of file
+  // bytes, and so includes effects like compression of the underlying data.
+  // E.g., the approximate offset of the last key in the table will
+  // be close to the file length.
+  uint64_t ApproximateOffsetOf(const Slice& key) const;
+
+ private:
+  friend class TableCache;
+  struct Rep;
+
+  static Iterator* BlockReader(void*, const ReadOptions&, const Slice&);
+
+  explicit Table(Rep* rep) : rep_(rep) {}
+
+  // Calls (*handle_result)(arg, ...) with the entry found after a call
+  // to Seek(key).  May not make such a call if filter policy says
+  // that key is not present.
+  Status InternalGet(const ReadOptions&, const Slice& key, void* arg,
+                     void (*handle_result)(void* arg, const Slice& k,
+                                           const Slice& v));
+
+  void ReadMeta(const Footer& footer);
+  void ReadFilter(const Slice& filter_handle_value);
+
+  Rep* const rep_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_TABLE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/table_builder.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/table_builder.h
new file mode 100644
index 0000000..7d8896b
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/table_builder.h	
@@ -0,0 +1,93 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// TableBuilder provides the interface used to build a Table
+// (an immutable and sorted map from keys to values).
+//
+// Multiple threads can invoke const methods on a TableBuilder without
+// external synchronization, but if any of the threads may call a
+// non-const method, all threads accessing the same TableBuilder must use
+// external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_
+#define STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_
+
+#include <stdint.h>
+
+#include "leveldb/export.h"
+#include "leveldb/options.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+class BlockBuilder;
+class BlockHandle;
+class WritableFile;
+
+class LEVELDB_EXPORT TableBuilder {
+ public:
+  // Create a builder that will store the contents of the table it is
+  // building in *file.  Does not close the file.  It is up to the
+  // caller to close the file after calling Finish().
+  TableBuilder(const Options& options, WritableFile* file);
+
+  TableBuilder(const TableBuilder&) = delete;
+  TableBuilder& operator=(const TableBuilder&) = delete;
+
+  // REQUIRES: Either Finish() or Abandon() has been called.
+  ~TableBuilder();
+
+  // Change the options used by this builder.  Note: only some of the
+  // option fields can be changed after construction.  If a field is
+  // not allowed to change dynamically and its value in the structure
+  // passed to the constructor is different from its value in the
+  // structure passed to this method, this method will return an error
+  // without changing any fields.
+  Status ChangeOptions(const Options& options);
+
+  // Add key,value to the table being constructed.
+  // REQUIRES: key is after any previously added key according to comparator.
+  // REQUIRES: Finish(), Abandon() have not been called
+  void Add(const Slice& key, const Slice& value);
+
+  // Advanced operation: flush any buffered key/value pairs to file.
+  // Can be used to ensure that two adjacent entries never live in
+  // the same data block.  Most clients should not need to use this method.
+  // REQUIRES: Finish(), Abandon() have not been called
+  void Flush();
+
+  // Return non-ok iff some error has been detected.
+  Status status() const;
+
+  // Finish building the table.  Stops using the file passed to the
+  // constructor after this function returns.
+  // REQUIRES: Finish(), Abandon() have not been called
+  Status Finish();
+
+  // Indicate that the contents of this builder should be abandoned.  Stops
+  // using the file passed to the constructor after this function returns.
+  // If the caller is not going to call Finish(), it must call Abandon()
+  // before destroying this builder.
+  // REQUIRES: Finish(), Abandon() have not been called
+  void Abandon();
+
+  // Number of calls to Add() so far.
+  uint64_t NumEntries() const;
+
+  // Size of the file generated so far.  If invoked after a successful
+  // Finish() call, returns the size of the final generated file.
+  uint64_t FileSize() const;
+
+ private:
+  bool ok() const { return status().ok(); }
+  void WriteBlock(BlockBuilder* block, BlockHandle* handle);
+  void WriteRawBlock(const Slice& data, CompressionType, BlockHandle* handle);
+
+  struct Rep;
+  Rep* rep_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_TABLE_BUILDER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/include/leveldb/write_batch.h b/ChattingApp 000/Pods/leveldb-library/include/leveldb/write_batch.h
new file mode 100644
index 0000000..94d4115
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/include/leveldb/write_batch.h	
@@ -0,0 +1,83 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// WriteBatch holds a collection of updates to apply atomically to a DB.
+//
+// The updates are applied in the order in which they are added
+// to the WriteBatch.  For example, the value of "key" will be "v3"
+// after the following batch is written:
+//
+//    batch.Put("key", "v1");
+//    batch.Delete("key");
+//    batch.Put("key", "v2");
+//    batch.Put("key", "v3");
+//
+// Multiple threads can invoke const methods on a WriteBatch without
+// external synchronization, but if any of the threads may call a
+// non-const method, all threads accessing the same WriteBatch must use
+// external synchronization.
+
+#ifndef STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_
+#define STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_
+
+#include <string>
+
+#include "leveldb/export.h"
+#include "leveldb/status.h"
+
+namespace leveldb {
+
+class Slice;
+
+class LEVELDB_EXPORT WriteBatch {
+ public:
+  class LEVELDB_EXPORT Handler {
+   public:
+    virtual ~Handler();
+    virtual void Put(const Slice& key, const Slice& value) = 0;
+    virtual void Delete(const Slice& key) = 0;
+  };
+
+  WriteBatch();
+
+  // Intentionally copyable.
+  WriteBatch(const WriteBatch&) = default;
+  WriteBatch& operator=(const WriteBatch&) = default;
+
+  ~WriteBatch();
+
+  // Store the mapping "key->value" in the database.
+  void Put(const Slice& key, const Slice& value);
+
+  // If the database contains a mapping for "key", erase it.  Else do nothing.
+  void Delete(const Slice& key);
+
+  // Clear all updates buffered in this batch.
+  void Clear();
+
+  // The size of the database changes caused by this batch.
+  //
+  // This number is tied to implementation details, and may change across
+  // releases. It is intended for LevelDB usage metrics.
+  size_t ApproximateSize() const;
+
+  // Copies the operations in "source" to this batch.
+  //
+  // This runs in O(source size) time. However, the constant factor is better
+  // than calling Iterate() over the source batch with a Handler that replicates
+  // the operations into this batch.
+  void Append(const WriteBatch& source);
+
+  // Support for iterating over the contents of a batch.
+  Status Iterate(Handler* handler) const;
+
+ private:
+  friend class WriteBatchInternal;
+
+  std::string rep_;  // See comment in write_batch.cc for the format of rep_
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_INCLUDE_WRITE_BATCH_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/port/port.h b/ChattingApp 000/Pods/leveldb-library/port/port.h
new file mode 100644
index 0000000..4b247f7
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/port/port.h	
@@ -0,0 +1,19 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_PORT_PORT_H_
+#define STORAGE_LEVELDB_PORT_PORT_H_
+
+#include <string.h>
+
+// Include the appropriate platform specific file below.  If you are
+// porting to a new platform, see "port_example.h" for documentation
+// of what the new port_<platform>.h file must provide.
+#if defined(LEVELDB_PLATFORM_POSIX) || defined(LEVELDB_PLATFORM_WINDOWS)
+#include "port/port_stdcxx.h"
+#elif defined(LEVELDB_PLATFORM_CHROMIUM)
+#include "port/port_chromium.h"
+#endif
+
+#endif  // STORAGE_LEVELDB_PORT_PORT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/port/port_example.h b/ChattingApp 000/Pods/leveldb-library/port/port_example.h
new file mode 100644
index 0000000..1a8fca2
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/port/port_example.h	
@@ -0,0 +1,104 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// This file contains the specification, but not the implementations,
+// of the types/operations/etc. that should be defined by a platform
+// specific port_<platform>.h file.  Use this file as a reference for
+// how to port this package to a new platform.
+
+#ifndef STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_
+#define STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_
+
+#include "port/thread_annotations.h"
+
+namespace leveldb {
+namespace port {
+
+// TODO(jorlow): Many of these belong more in the environment class rather than
+//               here. We should try moving them and see if it affects perf.
+
+// The following boolean constant must be true on a little-endian machine
+// and false otherwise.
+static const bool kLittleEndian = true /* or some other expression */;
+
+// ------------------ Threading -------------------
+
+// A Mutex represents an exclusive lock.
+class LOCKABLE Mutex {
+ public:
+  Mutex();
+  ~Mutex();
+
+  // Lock the mutex.  Waits until other lockers have exited.
+  // Will deadlock if the mutex is already locked by this thread.
+  void Lock() EXCLUSIVE_LOCK_FUNCTION();
+
+  // Unlock the mutex.
+  // REQUIRES: This mutex was locked by this thread.
+  void Unlock() UNLOCK_FUNCTION();
+
+  // Optionally crash if this thread does not hold this mutex.
+  // The implementation must be fast, especially if NDEBUG is
+  // defined.  The implementation is allowed to skip all checks.
+  void AssertHeld() ASSERT_EXCLUSIVE_LOCK();
+};
+
+class CondVar {
+ public:
+  explicit CondVar(Mutex* mu);
+  ~CondVar();
+
+  // Atomically release *mu and block on this condition variable until
+  // either a call to SignalAll(), or a call to Signal() that picks
+  // this thread to wakeup.
+  // REQUIRES: this thread holds *mu
+  void Wait();
+
+  // If there are some threads waiting, wake up at least one of them.
+  void Signal();
+
+  // Wake up all waiting threads.
+  void SignallAll();
+};
+
+// ------------------ Compression -------------------
+
+// Store the snappy compression of "input[0,input_length-1]" in *output.
+// Returns false if snappy is not supported by this port.
+bool Snappy_Compress(const char* input, size_t input_length,
+                     std::string* output);
+
+// If input[0,input_length-1] looks like a valid snappy compressed
+// buffer, store the size of the uncompressed data in *result and
+// return true.  Else return false.
+bool Snappy_GetUncompressedLength(const char* input, size_t length,
+                                  size_t* result);
+
+// Attempt to snappy uncompress input[0,input_length-1] into *output.
+// Returns true if successful, false if the input is invalid lightweight
+// compressed data.
+//
+// REQUIRES: at least the first "n" bytes of output[] must be writable
+// where "n" is the result of a successful call to
+// Snappy_GetUncompressedLength.
+bool Snappy_Uncompress(const char* input_data, size_t input_length,
+                       char* output);
+
+// ------------------ Miscellaneous -------------------
+
+// If heap profiling is not supported, returns false.
+// Else repeatedly calls (*func)(arg, data, n) and then returns true.
+// The concatenation of all "data[0,n-1]" fragments is the heap profile.
+bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg);
+
+// Extend the CRC to include the first n bytes of buf.
+//
+// Returns zero if the CRC cannot be extended using acceleration, else returns
+// the newly extended CRC value (which may also be zero).
+uint32_t AcceleratedCRC32C(uint32_t crc, const char* buf, size_t size);
+
+}  // namespace port
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_PORT_PORT_EXAMPLE_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/port/port_stdcxx.h b/ChattingApp 000/Pods/leveldb-library/port/port_stdcxx.h
new file mode 100644
index 0000000..e9cb0e5
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/port/port_stdcxx.h	
@@ -0,0 +1,153 @@
+// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_PORT_PORT_STDCXX_H_
+#define STORAGE_LEVELDB_PORT_PORT_STDCXX_H_
+
+// port/port_config.h availability is automatically detected via __has_include
+// in newer compilers. If LEVELDB_HAS_PORT_CONFIG_H is defined, it overrides the
+// configuration detection.
+#if defined(LEVELDB_HAS_PORT_CONFIG_H)
+
+#if LEVELDB_HAS_PORT_CONFIG_H
+#include "port/port_config.h"
+#endif  // LEVELDB_HAS_PORT_CONFIG_H
+
+#elif defined(__has_include)
+
+#if __has_include("port/port_config.h")
+#include "port/port_config.h"
+#endif  // __has_include("port/port_config.h")
+
+#endif  // defined(LEVELDB_HAS_PORT_CONFIG_H)
+
+#if HAVE_CRC32C
+#include <crc32c/crc32c.h>
+#endif  // HAVE_CRC32C
+#if HAVE_SNAPPY
+#include <snappy.h>
+#endif  // HAVE_SNAPPY
+
+#include <cassert>
+#include <condition_variable>  // NOLINT
+#include <cstddef>
+#include <cstdint>
+#include <mutex>  // NOLINT
+#include <string>
+
+#include "port/thread_annotations.h"
+
+namespace leveldb {
+namespace port {
+
+static const bool kLittleEndian = !LEVELDB_IS_BIG_ENDIAN;
+
+class CondVar;
+
+// Thinly wraps std::mutex.
+class LOCKABLE Mutex {
+ public:
+  Mutex() = default;
+  ~Mutex() = default;
+
+  Mutex(const Mutex&) = delete;
+  Mutex& operator=(const Mutex&) = delete;
+
+  void Lock() EXCLUSIVE_LOCK_FUNCTION() { mu_.lock(); }
+  void Unlock() UNLOCK_FUNCTION() { mu_.unlock(); }
+  void AssertHeld() ASSERT_EXCLUSIVE_LOCK() {}
+
+ private:
+  friend class CondVar;
+  std::mutex mu_;
+};
+
+// Thinly wraps std::condition_variable.
+class CondVar {
+ public:
+  explicit CondVar(Mutex* mu) : mu_(mu) { assert(mu != nullptr); }
+  ~CondVar() = default;
+
+  CondVar(const CondVar&) = delete;
+  CondVar& operator=(const CondVar&) = delete;
+
+  void Wait() {
+    std::unique_lock<std::mutex> lock(mu_->mu_, std::adopt_lock);
+    cv_.wait(lock);
+    lock.release();
+  }
+  void Signal() { cv_.notify_one(); }
+  void SignalAll() { cv_.notify_all(); }
+
+ private:
+  std::condition_variable cv_;
+  Mutex* const mu_;
+};
+
+inline bool Snappy_Compress(const char* input, size_t length,
+                            std::string* output) {
+#if HAVE_SNAPPY
+  output->resize(snappy::MaxCompressedLength(length));
+  size_t outlen;
+  snappy::RawCompress(input, length, &(*output)[0], &outlen);
+  output->resize(outlen);
+  return true;
+#else
+  // Silence compiler warnings about unused arguments.
+  (void)input;
+  (void)length;
+  (void)output;
+#endif  // HAVE_SNAPPY
+
+  return false;
+}
+
+inline bool Snappy_GetUncompressedLength(const char* input, size_t length,
+                                         size_t* result) {
+#if HAVE_SNAPPY
+  return snappy::GetUncompressedLength(input, length, result);
+#else
+  // Silence compiler warnings about unused arguments.
+  (void)input;
+  (void)length;
+  (void)result;
+  return false;
+#endif  // HAVE_SNAPPY
+}
+
+inline bool Snappy_Uncompress(const char* input, size_t length, char* output) {
+#if HAVE_SNAPPY
+  return snappy::RawUncompress(input, length, output);
+#else
+  // Silence compiler warnings about unused arguments.
+  (void)input;
+  (void)length;
+  (void)output;
+  return false;
+#endif  // HAVE_SNAPPY
+}
+
+inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) {
+  // Silence compiler warnings about unused arguments.
+  (void)func;
+  (void)arg;
+  return false;
+}
+
+inline uint32_t AcceleratedCRC32C(uint32_t crc, const char* buf, size_t size) {
+#if HAVE_CRC32C
+  return ::crc32c::Extend(crc, reinterpret_cast<const uint8_t*>(buf), size);
+#else
+  // Silence compiler warnings about unused arguments.
+  (void)crc;
+  (void)buf;
+  (void)size;
+  return 0;
+#endif  // HAVE_CRC32C
+}
+
+}  // namespace port
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_PORT_PORT_STDCXX_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/port/thread_annotations.h b/ChattingApp 000/Pods/leveldb-library/port/thread_annotations.h
new file mode 100644
index 0000000..1547df9
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/port/thread_annotations.h	
@@ -0,0 +1,108 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
+#define STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
+
+// Use Clang's thread safety analysis annotations when available. In other
+// environments, the macros receive empty definitions.
+// Usage documentation: https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
+
+#if !defined(THREAD_ANNOTATION_ATTRIBUTE__)
+
+#if defined(__clang__)
+
+#define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
+#else
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)  // no-op
+#endif
+
+#endif  // !defined(THREAD_ANNOTATION_ATTRIBUTE__)
+
+#ifndef GUARDED_BY
+#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+#endif
+
+#ifndef PT_GUARDED_BY
+#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+#endif
+
+#ifndef ACQUIRED_AFTER
+#define ACQUIRED_AFTER(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+#endif
+
+#ifndef ACQUIRED_BEFORE
+#define ACQUIRED_BEFORE(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+#endif
+
+#ifndef EXCLUSIVE_LOCKS_REQUIRED
+#define EXCLUSIVE_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+#endif
+
+#ifndef SHARED_LOCKS_REQUIRED
+#define SHARED_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+#endif
+
+#ifndef LOCKS_EXCLUDED
+#define LOCKS_EXCLUDED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+#endif
+
+#ifndef LOCK_RETURNED
+#define LOCK_RETURNED(x) THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+#endif
+
+#ifndef LOCKABLE
+#define LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(lockable)
+#endif
+
+#ifndef SCOPED_LOCKABLE
+#define SCOPED_LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+#endif
+
+#ifndef EXCLUSIVE_LOCK_FUNCTION
+#define EXCLUSIVE_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+#endif
+
+#ifndef SHARED_LOCK_FUNCTION
+#define SHARED_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+#endif
+
+#ifndef EXCLUSIVE_TRYLOCK_FUNCTION
+#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+#endif
+
+#ifndef SHARED_TRYLOCK_FUNCTION
+#define SHARED_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+#endif
+
+#ifndef UNLOCK_FUNCTION
+#define UNLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+#endif
+
+#ifndef NO_THREAD_SAFETY_ANALYSIS
+#define NO_THREAD_SAFETY_ANALYSIS \
+  THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+#endif
+
+#ifndef ASSERT_EXCLUSIVE_LOCK
+#define ASSERT_EXCLUSIVE_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
+#endif
+
+#ifndef ASSERT_SHARED_LOCK
+#define ASSERT_SHARED_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
+#endif
+
+#endif  // STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/block.cc b/ChattingApp 000/Pods/leveldb-library/table/block.cc
new file mode 100644
index 0000000..ad0ee98
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/block.cc	
@@ -0,0 +1,266 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Decodes the blocks generated by block_builder.cc.
+
+#include "table/block.h"
+
+#include <algorithm>
+#include <vector>
+
+#include "leveldb/comparator.h"
+#include "table/format.h"
+#include "util/coding.h"
+#include "util/logging.h"
+
+namespace leveldb {
+
+inline uint32_t Block::NumRestarts() const {
+  assert(size_ >= sizeof(uint32_t));
+  return DecodeFixed32(data_ + size_ - sizeof(uint32_t));
+}
+
+Block::Block(const BlockContents& contents)
+    : data_(contents.data.data()),
+      size_(contents.data.size()),
+      owned_(contents.heap_allocated) {
+  if (size_ < sizeof(uint32_t)) {
+    size_ = 0;  // Error marker
+  } else {
+    size_t max_restarts_allowed = (size_ - sizeof(uint32_t)) / sizeof(uint32_t);
+    if (NumRestarts() > max_restarts_allowed) {
+      // The size is too small for NumRestarts()
+      size_ = 0;
+    } else {
+      restart_offset_ = size_ - (1 + NumRestarts()) * sizeof(uint32_t);
+    }
+  }
+}
+
+Block::~Block() {
+  if (owned_) {
+    delete[] data_;
+  }
+}
+
+// Helper routine: decode the next block entry starting at "p",
+// storing the number of shared key bytes, non_shared key bytes,
+// and the length of the value in "*shared", "*non_shared", and
+// "*value_length", respectively.  Will not dereference past "limit".
+//
+// If any errors are detected, returns nullptr.  Otherwise, returns a
+// pointer to the key delta (just past the three decoded values).
+static inline const char* DecodeEntry(const char* p, const char* limit,
+                                      uint32_t* shared, uint32_t* non_shared,
+                                      uint32_t* value_length) {
+  if (limit - p < 3) return nullptr;
+  *shared = reinterpret_cast<const unsigned char*>(p)[0];
+  *non_shared = reinterpret_cast<const unsigned char*>(p)[1];
+  *value_length = reinterpret_cast<const unsigned char*>(p)[2];
+  if ((*shared | *non_shared | *value_length) < 128) {
+    // Fast path: all three values are encoded in one byte each
+    p += 3;
+  } else {
+    if ((p = GetVarint32Ptr(p, limit, shared)) == nullptr) return nullptr;
+    if ((p = GetVarint32Ptr(p, limit, non_shared)) == nullptr) return nullptr;
+    if ((p = GetVarint32Ptr(p, limit, value_length)) == nullptr) return nullptr;
+  }
+
+  if (static_cast<uint32_t>(limit - p) < (*non_shared + *value_length)) {
+    return nullptr;
+  }
+  return p;
+}
+
+class Block::Iter : public Iterator {
+ private:
+  const Comparator* const comparator_;
+  const char* const data_;       // underlying block contents
+  uint32_t const restarts_;      // Offset of restart array (list of fixed32)
+  uint32_t const num_restarts_;  // Number of uint32_t entries in restart array
+
+  // current_ is offset in data_ of current entry.  >= restarts_ if !Valid
+  uint32_t current_;
+  uint32_t restart_index_;  // Index of restart block in which current_ falls
+  std::string key_;
+  Slice value_;
+  Status status_;
+
+  inline int Compare(const Slice& a, const Slice& b) const {
+    return comparator_->Compare(a, b);
+  }
+
+  // Return the offset in data_ just past the end of the current entry.
+  inline uint32_t NextEntryOffset() const {
+    return (value_.data() + value_.size()) - data_;
+  }
+
+  uint32_t GetRestartPoint(uint32_t index) {
+    assert(index < num_restarts_);
+    return DecodeFixed32(data_ + restarts_ + index * sizeof(uint32_t));
+  }
+
+  void SeekToRestartPoint(uint32_t index) {
+    key_.clear();
+    restart_index_ = index;
+    // current_ will be fixed by ParseNextKey();
+
+    // ParseNextKey() starts at the end of value_, so set value_ accordingly
+    uint32_t offset = GetRestartPoint(index);
+    value_ = Slice(data_ + offset, 0);
+  }
+
+ public:
+  Iter(const Comparator* comparator, const char* data, uint32_t restarts,
+       uint32_t num_restarts)
+      : comparator_(comparator),
+        data_(data),
+        restarts_(restarts),
+        num_restarts_(num_restarts),
+        current_(restarts_),
+        restart_index_(num_restarts_) {
+    assert(num_restarts_ > 0);
+  }
+
+  virtual bool Valid() const { return current_ < restarts_; }
+  virtual Status status() const { return status_; }
+  virtual Slice key() const {
+    assert(Valid());
+    return key_;
+  }
+  virtual Slice value() const {
+    assert(Valid());
+    return value_;
+  }
+
+  virtual void Next() {
+    assert(Valid());
+    ParseNextKey();
+  }
+
+  virtual void Prev() {
+    assert(Valid());
+
+    // Scan backwards to a restart point before current_
+    const uint32_t original = current_;
+    while (GetRestartPoint(restart_index_) >= original) {
+      if (restart_index_ == 0) {
+        // No more entries
+        current_ = restarts_;
+        restart_index_ = num_restarts_;
+        return;
+      }
+      restart_index_--;
+    }
+
+    SeekToRestartPoint(restart_index_);
+    do {
+      // Loop until end of current entry hits the start of original entry
+    } while (ParseNextKey() && NextEntryOffset() < original);
+  }
+
+  virtual void Seek(const Slice& target) {
+    // Binary search in restart array to find the last restart point
+    // with a key < target
+    uint32_t left = 0;
+    uint32_t right = num_restarts_ - 1;
+    while (left < right) {
+      uint32_t mid = (left + right + 1) / 2;
+      uint32_t region_offset = GetRestartPoint(mid);
+      uint32_t shared, non_shared, value_length;
+      const char* key_ptr =
+          DecodeEntry(data_ + region_offset, data_ + restarts_, &shared,
+                      &non_shared, &value_length);
+      if (key_ptr == nullptr || (shared != 0)) {
+        CorruptionError();
+        return;
+      }
+      Slice mid_key(key_ptr, non_shared);
+      if (Compare(mid_key, target) < 0) {
+        // Key at "mid" is smaller than "target".  Therefore all
+        // blocks before "mid" are uninteresting.
+        left = mid;
+      } else {
+        // Key at "mid" is >= "target".  Therefore all blocks at or
+        // after "mid" are uninteresting.
+        right = mid - 1;
+      }
+    }
+
+    // Linear search (within restart block) for first key >= target
+    SeekToRestartPoint(left);
+    while (true) {
+      if (!ParseNextKey()) {
+        return;
+      }
+      if (Compare(key_, target) >= 0) {
+        return;
+      }
+    }
+  }
+
+  virtual void SeekToFirst() {
+    SeekToRestartPoint(0);
+    ParseNextKey();
+  }
+
+  virtual void SeekToLast() {
+    SeekToRestartPoint(num_restarts_ - 1);
+    while (ParseNextKey() && NextEntryOffset() < restarts_) {
+      // Keep skipping
+    }
+  }
+
+ private:
+  void CorruptionError() {
+    current_ = restarts_;
+    restart_index_ = num_restarts_;
+    status_ = Status::Corruption("bad entry in block");
+    key_.clear();
+    value_.clear();
+  }
+
+  bool ParseNextKey() {
+    current_ = NextEntryOffset();
+    const char* p = data_ + current_;
+    const char* limit = data_ + restarts_;  // Restarts come right after data
+    if (p >= limit) {
+      // No more entries to return.  Mark as invalid.
+      current_ = restarts_;
+      restart_index_ = num_restarts_;
+      return false;
+    }
+
+    // Decode next entry
+    uint32_t shared, non_shared, value_length;
+    p = DecodeEntry(p, limit, &shared, &non_shared, &value_length);
+    if (p == nullptr || key_.size() < shared) {
+      CorruptionError();
+      return false;
+    } else {
+      key_.resize(shared);
+      key_.append(p, non_shared);
+      value_ = Slice(p + non_shared, value_length);
+      while (restart_index_ + 1 < num_restarts_ &&
+             GetRestartPoint(restart_index_ + 1) < current_) {
+        ++restart_index_;
+      }
+      return true;
+    }
+  }
+};
+
+Iterator* Block::NewIterator(const Comparator* comparator) {
+  if (size_ < sizeof(uint32_t)) {
+    return NewErrorIterator(Status::Corruption("bad block contents"));
+  }
+  const uint32_t num_restarts = NumRestarts();
+  if (num_restarts == 0) {
+    return NewEmptyIterator();
+  } else {
+    return new Iter(comparator, data_, restart_offset_, num_restarts);
+  }
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/block.h b/ChattingApp 000/Pods/leveldb-library/table/block.h
new file mode 100644
index 0000000..c8f1f7b
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/block.h	
@@ -0,0 +1,44 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_BLOCK_H_
+#define STORAGE_LEVELDB_TABLE_BLOCK_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "leveldb/iterator.h"
+
+namespace leveldb {
+
+struct BlockContents;
+class Comparator;
+
+class Block {
+ public:
+  // Initialize the block with the specified contents.
+  explicit Block(const BlockContents& contents);
+
+  Block(const Block&) = delete;
+  Block& operator=(const Block&) = delete;
+
+  ~Block();
+
+  size_t size() const { return size_; }
+  Iterator* NewIterator(const Comparator* comparator);
+
+ private:
+  class Iter;
+
+  uint32_t NumRestarts() const;
+
+  const char* data_;
+  size_t size_;
+  uint32_t restart_offset_;  // Offset in data_ of restart array
+  bool owned_;               // Block owns data_[]
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_BLOCK_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/block_builder.cc b/ChattingApp 000/Pods/leveldb-library/table/block_builder.cc
new file mode 100644
index 0000000..f7cb1b0
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/block_builder.cc	
@@ -0,0 +1,108 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// BlockBuilder generates blocks where keys are prefix-compressed:
+//
+// When we store a key, we drop the prefix shared with the previous
+// string.  This helps reduce the space requirement significantly.
+// Furthermore, once every K keys, we do not apply the prefix
+// compression and store the entire key.  We call this a "restart
+// point".  The tail end of the block stores the offsets of all of the
+// restart points, and can be used to do a binary search when looking
+// for a particular key.  Values are stored as-is (without compression)
+// immediately following the corresponding key.
+//
+// An entry for a particular key-value pair has the form:
+//     shared_bytes: varint32
+//     unshared_bytes: varint32
+//     value_length: varint32
+//     key_delta: char[unshared_bytes]
+//     value: char[value_length]
+// shared_bytes == 0 for restart points.
+//
+// The trailer of the block has the form:
+//     restarts: uint32[num_restarts]
+//     num_restarts: uint32
+// restarts[i] contains the offset within the block of the ith restart point.
+
+#include "table/block_builder.h"
+
+#include <assert.h>
+
+#include <algorithm>
+
+#include "leveldb/comparator.h"
+#include "leveldb/table_builder.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+BlockBuilder::BlockBuilder(const Options* options)
+    : options_(options), restarts_(), counter_(0), finished_(false) {
+  assert(options->block_restart_interval >= 1);
+  restarts_.push_back(0);  // First restart point is at offset 0
+}
+
+void BlockBuilder::Reset() {
+  buffer_.clear();
+  restarts_.clear();
+  restarts_.push_back(0);  // First restart point is at offset 0
+  counter_ = 0;
+  finished_ = false;
+  last_key_.clear();
+}
+
+size_t BlockBuilder::CurrentSizeEstimate() const {
+  return (buffer_.size() +                       // Raw data buffer
+          restarts_.size() * sizeof(uint32_t) +  // Restart array
+          sizeof(uint32_t));                     // Restart array length
+}
+
+Slice BlockBuilder::Finish() {
+  // Append restart array
+  for (size_t i = 0; i < restarts_.size(); i++) {
+    PutFixed32(&buffer_, restarts_[i]);
+  }
+  PutFixed32(&buffer_, restarts_.size());
+  finished_ = true;
+  return Slice(buffer_);
+}
+
+void BlockBuilder::Add(const Slice& key, const Slice& value) {
+  Slice last_key_piece(last_key_);
+  assert(!finished_);
+  assert(counter_ <= options_->block_restart_interval);
+  assert(buffer_.empty()  // No values yet?
+         || options_->comparator->Compare(key, last_key_piece) > 0);
+  size_t shared = 0;
+  if (counter_ < options_->block_restart_interval) {
+    // See how much sharing to do with previous string
+    const size_t min_length = std::min(last_key_piece.size(), key.size());
+    while ((shared < min_length) && (last_key_piece[shared] == key[shared])) {
+      shared++;
+    }
+  } else {
+    // Restart compression
+    restarts_.push_back(buffer_.size());
+    counter_ = 0;
+  }
+  const size_t non_shared = key.size() - shared;
+
+  // Add "<shared><non_shared><value_size>" to buffer_
+  PutVarint32(&buffer_, shared);
+  PutVarint32(&buffer_, non_shared);
+  PutVarint32(&buffer_, value.size());
+
+  // Add string delta to buffer_ followed by value
+  buffer_.append(key.data() + shared, non_shared);
+  buffer_.append(value.data(), value.size());
+
+  // Update state
+  last_key_.resize(shared);
+  last_key_.append(key.data() + shared, non_shared);
+  assert(Slice(last_key_) == key);
+  counter_++;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/block_builder.h b/ChattingApp 000/Pods/leveldb-library/table/block_builder.h
new file mode 100644
index 0000000..f91f5e6
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/block_builder.h	
@@ -0,0 +1,55 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_
+#define STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_
+
+#include <stdint.h>
+
+#include <vector>
+
+#include "leveldb/slice.h"
+
+namespace leveldb {
+
+struct Options;
+
+class BlockBuilder {
+ public:
+  explicit BlockBuilder(const Options* options);
+
+  BlockBuilder(const BlockBuilder&) = delete;
+  BlockBuilder& operator=(const BlockBuilder&) = delete;
+
+  // Reset the contents as if the BlockBuilder was just constructed.
+  void Reset();
+
+  // REQUIRES: Finish() has not been called since the last call to Reset().
+  // REQUIRES: key is larger than any previously added key
+  void Add(const Slice& key, const Slice& value);
+
+  // Finish building the block and return a slice that refers to the
+  // block contents.  The returned slice will remain valid for the
+  // lifetime of this builder or until Reset() is called.
+  Slice Finish();
+
+  // Returns an estimate of the current (uncompressed) size of the block
+  // we are building.
+  size_t CurrentSizeEstimate() const;
+
+  // Return true iff no entries have been added since the last Reset()
+  bool empty() const { return buffer_.empty(); }
+
+ private:
+  const Options* options_;
+  std::string buffer_;              // Destination buffer
+  std::vector<uint32_t> restarts_;  // Restart points
+  int counter_;                     // Number of entries emitted since restart
+  bool finished_;                   // Has Finish() been called?
+  std::string last_key_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_BLOCK_BUILDER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/filter_block.cc b/ChattingApp 000/Pods/leveldb-library/table/filter_block.cc
new file mode 100644
index 0000000..09ec009
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/filter_block.cc	
@@ -0,0 +1,106 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "table/filter_block.h"
+
+#include "leveldb/filter_policy.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+// See doc/table_format.md for an explanation of the filter block format.
+
+// Generate new filter every 2KB of data
+static const size_t kFilterBaseLg = 11;
+static const size_t kFilterBase = 1 << kFilterBaseLg;
+
+FilterBlockBuilder::FilterBlockBuilder(const FilterPolicy* policy)
+    : policy_(policy) {}
+
+void FilterBlockBuilder::StartBlock(uint64_t block_offset) {
+  uint64_t filter_index = (block_offset / kFilterBase);
+  assert(filter_index >= filter_offsets_.size());
+  while (filter_index > filter_offsets_.size()) {
+    GenerateFilter();
+  }
+}
+
+void FilterBlockBuilder::AddKey(const Slice& key) {
+  Slice k = key;
+  start_.push_back(keys_.size());
+  keys_.append(k.data(), k.size());
+}
+
+Slice FilterBlockBuilder::Finish() {
+  if (!start_.empty()) {
+    GenerateFilter();
+  }
+
+  // Append array of per-filter offsets
+  const uint32_t array_offset = result_.size();
+  for (size_t i = 0; i < filter_offsets_.size(); i++) {
+    PutFixed32(&result_, filter_offsets_[i]);
+  }
+
+  PutFixed32(&result_, array_offset);
+  result_.push_back(kFilterBaseLg);  // Save encoding parameter in result
+  return Slice(result_);
+}
+
+void FilterBlockBuilder::GenerateFilter() {
+  const size_t num_keys = start_.size();
+  if (num_keys == 0) {
+    // Fast path if there are no keys for this filter
+    filter_offsets_.push_back(result_.size());
+    return;
+  }
+
+  // Make list of keys from flattened key structure
+  start_.push_back(keys_.size());  // Simplify length computation
+  tmp_keys_.resize(num_keys);
+  for (size_t i = 0; i < num_keys; i++) {
+    const char* base = keys_.data() + start_[i];
+    size_t length = start_[i + 1] - start_[i];
+    tmp_keys_[i] = Slice(base, length);
+  }
+
+  // Generate filter for current set of keys and append to result_.
+  filter_offsets_.push_back(result_.size());
+  policy_->CreateFilter(&tmp_keys_[0], static_cast<int>(num_keys), &result_);
+
+  tmp_keys_.clear();
+  keys_.clear();
+  start_.clear();
+}
+
+FilterBlockReader::FilterBlockReader(const FilterPolicy* policy,
+                                     const Slice& contents)
+    : policy_(policy), data_(nullptr), offset_(nullptr), num_(0), base_lg_(0) {
+  size_t n = contents.size();
+  if (n < 5) return;  // 1 byte for base_lg_ and 4 for start of offset array
+  base_lg_ = contents[n - 1];
+  uint32_t last_word = DecodeFixed32(contents.data() + n - 5);
+  if (last_word > n - 5) return;
+  data_ = contents.data();
+  offset_ = data_ + last_word;
+  num_ = (n - 5 - last_word) / 4;
+}
+
+bool FilterBlockReader::KeyMayMatch(uint64_t block_offset, const Slice& key) {
+  uint64_t index = block_offset >> base_lg_;
+  if (index < num_) {
+    uint32_t start = DecodeFixed32(offset_ + index * 4);
+    uint32_t limit = DecodeFixed32(offset_ + index * 4 + 4);
+    if (start <= limit && limit <= static_cast<size_t>(offset_ - data_)) {
+      Slice filter = Slice(data_ + start, limit - start);
+      return policy_->KeyMayMatch(key, filter);
+    } else if (start == limit) {
+      // Empty filters do not match any keys
+      return false;
+    }
+  }
+  return true;  // Errors are treated as potential matches
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/filter_block.h b/ChattingApp 000/Pods/leveldb-library/table/filter_block.h
new file mode 100644
index 0000000..73b5399
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/filter_block.h	
@@ -0,0 +1,69 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// A filter block is stored near the end of a Table file.  It contains
+// filters (e.g., bloom filters) for all data blocks in the table combined
+// into a single filter block.
+
+#ifndef STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_
+#define STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include "leveldb/slice.h"
+#include "util/hash.h"
+
+namespace leveldb {
+
+class FilterPolicy;
+
+// A FilterBlockBuilder is used to construct all of the filters for a
+// particular Table.  It generates a single string which is stored as
+// a special block in the Table.
+//
+// The sequence of calls to FilterBlockBuilder must match the regexp:
+//      (StartBlock AddKey*)* Finish
+class FilterBlockBuilder {
+ public:
+  explicit FilterBlockBuilder(const FilterPolicy*);
+
+  FilterBlockBuilder(const FilterBlockBuilder&) = delete;
+  FilterBlockBuilder& operator=(const FilterBlockBuilder&) = delete;
+
+  void StartBlock(uint64_t block_offset);
+  void AddKey(const Slice& key);
+  Slice Finish();
+
+ private:
+  void GenerateFilter();
+
+  const FilterPolicy* policy_;
+  std::string keys_;             // Flattened key contents
+  std::vector<size_t> start_;    // Starting index in keys_ of each key
+  std::string result_;           // Filter data computed so far
+  std::vector<Slice> tmp_keys_;  // policy_->CreateFilter() argument
+  std::vector<uint32_t> filter_offsets_;
+};
+
+class FilterBlockReader {
+ public:
+  // REQUIRES: "contents" and *policy must stay live while *this is live.
+  FilterBlockReader(const FilterPolicy* policy, const Slice& contents);
+  bool KeyMayMatch(uint64_t block_offset, const Slice& key);
+
+ private:
+  const FilterPolicy* policy_;
+  const char* data_;    // Pointer to filter data (at block-start)
+  const char* offset_;  // Pointer to beginning of offset array (at block-end)
+  size_t num_;          // Number of entries in offset array
+  size_t base_lg_;      // Encoding parameter (see kFilterBaseLg in .cc file)
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_FILTER_BLOCK_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/format.cc b/ChattingApp 000/Pods/leveldb-library/table/format.cc
new file mode 100644
index 0000000..e183977
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/format.cc	
@@ -0,0 +1,141 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "table/format.h"
+
+#include "leveldb/env.h"
+#include "port/port.h"
+#include "table/block.h"
+#include "util/coding.h"
+#include "util/crc32c.h"
+
+namespace leveldb {
+
+void BlockHandle::EncodeTo(std::string* dst) const {
+  // Sanity check that all fields have been set
+  assert(offset_ != ~static_cast<uint64_t>(0));
+  assert(size_ != ~static_cast<uint64_t>(0));
+  PutVarint64(dst, offset_);
+  PutVarint64(dst, size_);
+}
+
+Status BlockHandle::DecodeFrom(Slice* input) {
+  if (GetVarint64(input, &offset_) && GetVarint64(input, &size_)) {
+    return Status::OK();
+  } else {
+    return Status::Corruption("bad block handle");
+  }
+}
+
+void Footer::EncodeTo(std::string* dst) const {
+  const size_t original_size = dst->size();
+  metaindex_handle_.EncodeTo(dst);
+  index_handle_.EncodeTo(dst);
+  dst->resize(2 * BlockHandle::kMaxEncodedLength);  // Padding
+  PutFixed32(dst, static_cast<uint32_t>(kTableMagicNumber & 0xffffffffu));
+  PutFixed32(dst, static_cast<uint32_t>(kTableMagicNumber >> 32));
+  assert(dst->size() == original_size + kEncodedLength);
+  (void)original_size;  // Disable unused variable warning.
+}
+
+Status Footer::DecodeFrom(Slice* input) {
+  const char* magic_ptr = input->data() + kEncodedLength - 8;
+  const uint32_t magic_lo = DecodeFixed32(magic_ptr);
+  const uint32_t magic_hi = DecodeFixed32(magic_ptr + 4);
+  const uint64_t magic = ((static_cast<uint64_t>(magic_hi) << 32) |
+                          (static_cast<uint64_t>(magic_lo)));
+  if (magic != kTableMagicNumber) {
+    return Status::Corruption("not an sstable (bad magic number)");
+  }
+
+  Status result = metaindex_handle_.DecodeFrom(input);
+  if (result.ok()) {
+    result = index_handle_.DecodeFrom(input);
+  }
+  if (result.ok()) {
+    // We skip over any leftover data (just padding for now) in "input"
+    const char* end = magic_ptr + 8;
+    *input = Slice(end, input->data() + input->size() - end);
+  }
+  return result;
+}
+
+Status ReadBlock(RandomAccessFile* file, const ReadOptions& options,
+                 const BlockHandle& handle, BlockContents* result) {
+  result->data = Slice();
+  result->cachable = false;
+  result->heap_allocated = false;
+
+  // Read the block contents as well as the type/crc footer.
+  // See table_builder.cc for the code that built this structure.
+  size_t n = static_cast<size_t>(handle.size());
+  char* buf = new char[n + kBlockTrailerSize];
+  Slice contents;
+  Status s = file->Read(handle.offset(), n + kBlockTrailerSize, &contents, buf);
+  if (!s.ok()) {
+    delete[] buf;
+    return s;
+  }
+  if (contents.size() != n + kBlockTrailerSize) {
+    delete[] buf;
+    return Status::Corruption("truncated block read");
+  }
+
+  // Check the crc of the type and the block contents
+  const char* data = contents.data();  // Pointer to where Read put the data
+  if (options.verify_checksums) {
+    const uint32_t crc = crc32c::Unmask(DecodeFixed32(data + n + 1));
+    const uint32_t actual = crc32c::Value(data, n + 1);
+    if (actual != crc) {
+      delete[] buf;
+      s = Status::Corruption("block checksum mismatch");
+      return s;
+    }
+  }
+
+  switch (data[n]) {
+    case kNoCompression:
+      if (data != buf) {
+        // File implementation gave us pointer to some other data.
+        // Use it directly under the assumption that it will be live
+        // while the file is open.
+        delete[] buf;
+        result->data = Slice(data, n);
+        result->heap_allocated = false;
+        result->cachable = false;  // Do not double-cache
+      } else {
+        result->data = Slice(buf, n);
+        result->heap_allocated = true;
+        result->cachable = true;
+      }
+
+      // Ok
+      break;
+    case kSnappyCompression: {
+      size_t ulength = 0;
+      if (!port::Snappy_GetUncompressedLength(data, n, &ulength)) {
+        delete[] buf;
+        return Status::Corruption("corrupted compressed block contents");
+      }
+      char* ubuf = new char[ulength];
+      if (!port::Snappy_Uncompress(data, n, ubuf)) {
+        delete[] buf;
+        delete[] ubuf;
+        return Status::Corruption("corrupted compressed block contents");
+      }
+      delete[] buf;
+      result->data = Slice(ubuf, ulength);
+      result->heap_allocated = true;
+      result->cachable = true;
+      break;
+    }
+    default:
+      delete[] buf;
+      return Status::Corruption("bad block type");
+  }
+
+  return Status::OK();
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/format.h b/ChattingApp 000/Pods/leveldb-library/table/format.h
new file mode 100644
index 0000000..2ad145c
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/format.h	
@@ -0,0 +1,100 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_FORMAT_H_
+#define STORAGE_LEVELDB_TABLE_FORMAT_H_
+
+#include <stdint.h>
+
+#include <string>
+
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+#include "leveldb/table_builder.h"
+
+namespace leveldb {
+
+class Block;
+class RandomAccessFile;
+struct ReadOptions;
+
+// BlockHandle is a pointer to the extent of a file that stores a data
+// block or a meta block.
+class BlockHandle {
+ public:
+  // Maximum encoding length of a BlockHandle
+  enum { kMaxEncodedLength = 10 + 10 };
+
+  BlockHandle();
+
+  // The offset of the block in the file.
+  uint64_t offset() const { return offset_; }
+  void set_offset(uint64_t offset) { offset_ = offset; }
+
+  // The size of the stored block
+  uint64_t size() const { return size_; }
+  void set_size(uint64_t size) { size_ = size; }
+
+  void EncodeTo(std::string* dst) const;
+  Status DecodeFrom(Slice* input);
+
+ private:
+  uint64_t offset_;
+  uint64_t size_;
+};
+
+// Footer encapsulates the fixed information stored at the tail
+// end of every table file.
+class Footer {
+ public:
+  // Encoded length of a Footer.  Note that the serialization of a
+  // Footer will always occupy exactly this many bytes.  It consists
+  // of two block handles and a magic number.
+  enum { kEncodedLength = 2 * BlockHandle::kMaxEncodedLength + 8 };
+
+  Footer() {}
+
+  // The block handle for the metaindex block of the table
+  const BlockHandle& metaindex_handle() const { return metaindex_handle_; }
+  void set_metaindex_handle(const BlockHandle& h) { metaindex_handle_ = h; }
+
+  // The block handle for the index block of the table
+  const BlockHandle& index_handle() const { return index_handle_; }
+  void set_index_handle(const BlockHandle& h) { index_handle_ = h; }
+
+  void EncodeTo(std::string* dst) const;
+  Status DecodeFrom(Slice* input);
+
+ private:
+  BlockHandle metaindex_handle_;
+  BlockHandle index_handle_;
+};
+
+// kTableMagicNumber was picked by running
+//    echo http://code.google.com/p/leveldb/ | sha1sum
+// and taking the leading 64 bits.
+static const uint64_t kTableMagicNumber = 0xdb4775248b80fb57ull;
+
+// 1-byte type + 32-bit crc
+static const size_t kBlockTrailerSize = 5;
+
+struct BlockContents {
+  Slice data;           // Actual contents of data
+  bool cachable;        // True iff data can be cached
+  bool heap_allocated;  // True iff caller should delete[] data.data()
+};
+
+// Read the block identified by "handle" from "file".  On failure
+// return non-OK.  On success fill *result and return OK.
+Status ReadBlock(RandomAccessFile* file, const ReadOptions& options,
+                 const BlockHandle& handle, BlockContents* result);
+
+// Implementation details follow.  Clients should ignore,
+
+inline BlockHandle::BlockHandle()
+    : offset_(~static_cast<uint64_t>(0)), size_(~static_cast<uint64_t>(0)) {}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_FORMAT_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/iterator.cc b/ChattingApp 000/Pods/leveldb-library/table/iterator.cc
new file mode 100644
index 0000000..dfef083
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/iterator.cc	
@@ -0,0 +1,76 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/iterator.h"
+
+namespace leveldb {
+
+Iterator::Iterator() {
+  cleanup_head_.function = nullptr;
+  cleanup_head_.next = nullptr;
+}
+
+Iterator::~Iterator() {
+  if (!cleanup_head_.IsEmpty()) {
+    cleanup_head_.Run();
+    for (CleanupNode* node = cleanup_head_.next; node != nullptr;) {
+      node->Run();
+      CleanupNode* next_node = node->next;
+      delete node;
+      node = next_node;
+    }
+  }
+}
+
+void Iterator::RegisterCleanup(CleanupFunction func, void* arg1, void* arg2) {
+  assert(func != nullptr);
+  CleanupNode* node;
+  if (cleanup_head_.IsEmpty()) {
+    node = &cleanup_head_;
+  } else {
+    node = new CleanupNode();
+    node->next = cleanup_head_.next;
+    cleanup_head_.next = node;
+  }
+  node->function = func;
+  node->arg1 = arg1;
+  node->arg2 = arg2;
+}
+
+namespace {
+
+class EmptyIterator : public Iterator {
+ public:
+  EmptyIterator(const Status& s) : status_(s) {}
+  ~EmptyIterator() override = default;
+
+  bool Valid() const override { return false; }
+  void Seek(const Slice& target) override {}
+  void SeekToFirst() override {}
+  void SeekToLast() override {}
+  void Next() override { assert(false); }
+  void Prev() override { assert(false); }
+  Slice key() const override {
+    assert(false);
+    return Slice();
+  }
+  Slice value() const override {
+    assert(false);
+    return Slice();
+  }
+  Status status() const override { return status_; }
+
+ private:
+  Status status_;
+};
+
+}  // anonymous namespace
+
+Iterator* NewEmptyIterator() { return new EmptyIterator(Status::OK()); }
+
+Iterator* NewErrorIterator(const Status& status) {
+  return new EmptyIterator(status);
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/iterator_wrapper.h b/ChattingApp 000/Pods/leveldb-library/table/iterator_wrapper.h
new file mode 100644
index 0000000..c230572
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/iterator_wrapper.h	
@@ -0,0 +1,92 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_
+#define STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_
+
+#include "leveldb/iterator.h"
+#include "leveldb/slice.h"
+
+namespace leveldb {
+
+// A internal wrapper class with an interface similar to Iterator that
+// caches the valid() and key() results for an underlying iterator.
+// This can help avoid virtual function calls and also gives better
+// cache locality.
+class IteratorWrapper {
+ public:
+  IteratorWrapper() : iter_(nullptr), valid_(false) {}
+  explicit IteratorWrapper(Iterator* iter) : iter_(nullptr) { Set(iter); }
+  ~IteratorWrapper() { delete iter_; }
+  Iterator* iter() const { return iter_; }
+
+  // Takes ownership of "iter" and will delete it when destroyed, or
+  // when Set() is invoked again.
+  void Set(Iterator* iter) {
+    delete iter_;
+    iter_ = iter;
+    if (iter_ == nullptr) {
+      valid_ = false;
+    } else {
+      Update();
+    }
+  }
+
+  // Iterator interface methods
+  bool Valid() const { return valid_; }
+  Slice key() const {
+    assert(Valid());
+    return key_;
+  }
+  Slice value() const {
+    assert(Valid());
+    return iter_->value();
+  }
+  // Methods below require iter() != nullptr
+  Status status() const {
+    assert(iter_);
+    return iter_->status();
+  }
+  void Next() {
+    assert(iter_);
+    iter_->Next();
+    Update();
+  }
+  void Prev() {
+    assert(iter_);
+    iter_->Prev();
+    Update();
+  }
+  void Seek(const Slice& k) {
+    assert(iter_);
+    iter_->Seek(k);
+    Update();
+  }
+  void SeekToFirst() {
+    assert(iter_);
+    iter_->SeekToFirst();
+    Update();
+  }
+  void SeekToLast() {
+    assert(iter_);
+    iter_->SeekToLast();
+    Update();
+  }
+
+ private:
+  void Update() {
+    valid_ = iter_->Valid();
+    if (valid_) {
+      key_ = iter_->key();
+    }
+  }
+
+  Iterator* iter_;
+  bool valid_;
+  Slice key_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_ITERATOR_WRAPPER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/merger.cc b/ChattingApp 000/Pods/leveldb-library/table/merger.cc
new file mode 100644
index 0000000..1bbc6cf
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/merger.cc	
@@ -0,0 +1,191 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "table/merger.h"
+
+#include "leveldb/comparator.h"
+#include "leveldb/iterator.h"
+#include "table/iterator_wrapper.h"
+
+namespace leveldb {
+
+namespace {
+class MergingIterator : public Iterator {
+ public:
+  MergingIterator(const Comparator* comparator, Iterator** children, int n)
+      : comparator_(comparator),
+        children_(new IteratorWrapper[n]),
+        n_(n),
+        current_(nullptr),
+        direction_(kForward) {
+    for (int i = 0; i < n; i++) {
+      children_[i].Set(children[i]);
+    }
+  }
+
+  virtual ~MergingIterator() { delete[] children_; }
+
+  virtual bool Valid() const { return (current_ != nullptr); }
+
+  virtual void SeekToFirst() {
+    for (int i = 0; i < n_; i++) {
+      children_[i].SeekToFirst();
+    }
+    FindSmallest();
+    direction_ = kForward;
+  }
+
+  virtual void SeekToLast() {
+    for (int i = 0; i < n_; i++) {
+      children_[i].SeekToLast();
+    }
+    FindLargest();
+    direction_ = kReverse;
+  }
+
+  virtual void Seek(const Slice& target) {
+    for (int i = 0; i < n_; i++) {
+      children_[i].Seek(target);
+    }
+    FindSmallest();
+    direction_ = kForward;
+  }
+
+  virtual void Next() {
+    assert(Valid());
+
+    // Ensure that all children are positioned after key().
+    // If we are moving in the forward direction, it is already
+    // true for all of the non-current_ children since current_ is
+    // the smallest child and key() == current_->key().  Otherwise,
+    // we explicitly position the non-current_ children.
+    if (direction_ != kForward) {
+      for (int i = 0; i < n_; i++) {
+        IteratorWrapper* child = &children_[i];
+        if (child != current_) {
+          child->Seek(key());
+          if (child->Valid() &&
+              comparator_->Compare(key(), child->key()) == 0) {
+            child->Next();
+          }
+        }
+      }
+      direction_ = kForward;
+    }
+
+    current_->Next();
+    FindSmallest();
+  }
+
+  virtual void Prev() {
+    assert(Valid());
+
+    // Ensure that all children are positioned before key().
+    // If we are moving in the reverse direction, it is already
+    // true for all of the non-current_ children since current_ is
+    // the largest child and key() == current_->key().  Otherwise,
+    // we explicitly position the non-current_ children.
+    if (direction_ != kReverse) {
+      for (int i = 0; i < n_; i++) {
+        IteratorWrapper* child = &children_[i];
+        if (child != current_) {
+          child->Seek(key());
+          if (child->Valid()) {
+            // Child is at first entry >= key().  Step back one to be < key()
+            child->Prev();
+          } else {
+            // Child has no entries >= key().  Position at last entry.
+            child->SeekToLast();
+          }
+        }
+      }
+      direction_ = kReverse;
+    }
+
+    current_->Prev();
+    FindLargest();
+  }
+
+  virtual Slice key() const {
+    assert(Valid());
+    return current_->key();
+  }
+
+  virtual Slice value() const {
+    assert(Valid());
+    return current_->value();
+  }
+
+  virtual Status status() const {
+    Status status;
+    for (int i = 0; i < n_; i++) {
+      status = children_[i].status();
+      if (!status.ok()) {
+        break;
+      }
+    }
+    return status;
+  }
+
+ private:
+  // Which direction is the iterator moving?
+  enum Direction { kForward, kReverse };
+
+  void FindSmallest();
+  void FindLargest();
+
+  // We might want to use a heap in case there are lots of children.
+  // For now we use a simple array since we expect a very small number
+  // of children in leveldb.
+  const Comparator* comparator_;
+  IteratorWrapper* children_;
+  int n_;
+  IteratorWrapper* current_;
+  Direction direction_;
+};
+
+void MergingIterator::FindSmallest() {
+  IteratorWrapper* smallest = nullptr;
+  for (int i = 0; i < n_; i++) {
+    IteratorWrapper* child = &children_[i];
+    if (child->Valid()) {
+      if (smallest == nullptr) {
+        smallest = child;
+      } else if (comparator_->Compare(child->key(), smallest->key()) < 0) {
+        smallest = child;
+      }
+    }
+  }
+  current_ = smallest;
+}
+
+void MergingIterator::FindLargest() {
+  IteratorWrapper* largest = nullptr;
+  for (int i = n_ - 1; i >= 0; i--) {
+    IteratorWrapper* child = &children_[i];
+    if (child->Valid()) {
+      if (largest == nullptr) {
+        largest = child;
+      } else if (comparator_->Compare(child->key(), largest->key()) > 0) {
+        largest = child;
+      }
+    }
+  }
+  current_ = largest;
+}
+}  // namespace
+
+Iterator* NewMergingIterator(const Comparator* comparator, Iterator** children,
+                             int n) {
+  assert(n >= 0);
+  if (n == 0) {
+    return NewEmptyIterator();
+  } else if (n == 1) {
+    return children[0];
+  } else {
+    return new MergingIterator(comparator, children, n);
+  }
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/merger.h b/ChattingApp 000/Pods/leveldb-library/table/merger.h
new file mode 100644
index 0000000..41cedc5
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/merger.h	
@@ -0,0 +1,26 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_MERGER_H_
+#define STORAGE_LEVELDB_TABLE_MERGER_H_
+
+namespace leveldb {
+
+class Comparator;
+class Iterator;
+
+// Return an iterator that provided the union of the data in
+// children[0,n-1].  Takes ownership of the child iterators and
+// will delete them when the result iterator is deleted.
+//
+// The result does no duplicate suppression.  I.e., if a particular
+// key is present in K child iterators, it will be yielded K times.
+//
+// REQUIRES: n >= 0
+Iterator* NewMergingIterator(const Comparator* comparator, Iterator** children,
+                             int n);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_MERGER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/table/table.cc b/ChattingApp 000/Pods/leveldb-library/table/table.cc
new file mode 100644
index 0000000..b07bc88
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/table.cc	
@@ -0,0 +1,273 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/table.h"
+
+#include "leveldb/cache.h"
+#include "leveldb/comparator.h"
+#include "leveldb/env.h"
+#include "leveldb/filter_policy.h"
+#include "leveldb/options.h"
+#include "table/block.h"
+#include "table/filter_block.h"
+#include "table/format.h"
+#include "table/two_level_iterator.h"
+#include "util/coding.h"
+
+namespace leveldb {
+
+struct Table::Rep {
+  ~Rep() {
+    delete filter;
+    delete[] filter_data;
+    delete index_block;
+  }
+
+  Options options;
+  Status status;
+  RandomAccessFile* file;
+  uint64_t cache_id;
+  FilterBlockReader* filter;
+  const char* filter_data;
+
+  BlockHandle metaindex_handle;  // Handle to metaindex_block: saved from footer
+  Block* index_block;
+};
+
+Status Table::Open(const Options& options, RandomAccessFile* file,
+                   uint64_t size, Table** table) {
+  *table = nullptr;
+  if (size < Footer::kEncodedLength) {
+    return Status::Corruption("file is too short to be an sstable");
+  }
+
+  char footer_space[Footer::kEncodedLength];
+  Slice footer_input;
+  Status s = file->Read(size - Footer::kEncodedLength, Footer::kEncodedLength,
+                        &footer_input, footer_space);
+  if (!s.ok()) return s;
+
+  Footer footer;
+  s = footer.DecodeFrom(&footer_input);
+  if (!s.ok()) return s;
+
+  // Read the index block
+  BlockContents index_block_contents;
+  if (s.ok()) {
+    ReadOptions opt;
+    if (options.paranoid_checks) {
+      opt.verify_checksums = true;
+    }
+    s = ReadBlock(file, opt, footer.index_handle(), &index_block_contents);
+  }
+
+  if (s.ok()) {
+    // We've successfully read the footer and the index block: we're
+    // ready to serve requests.
+    Block* index_block = new Block(index_block_contents);
+    Rep* rep = new Table::Rep;
+    rep->options = options;
+    rep->file = file;
+    rep->metaindex_handle = footer.metaindex_handle();
+    rep->index_block = index_block;
+    rep->cache_id = (options.block_cache ? options.block_cache->NewId() : 0);
+    rep->filter_data = nullptr;
+    rep->filter = nullptr;
+    *table = new Table(rep);
+    (*table)->ReadMeta(footer);
+  }
+
+  return s;
+}
+
+void Table::ReadMeta(const Footer& footer) {
+  if (rep_->options.filter_policy == nullptr) {
+    return;  // Do not need any metadata
+  }
+
+  // TODO(sanjay): Skip this if footer.metaindex_handle() size indicates
+  // it is an empty block.
+  ReadOptions opt;
+  if (rep_->options.paranoid_checks) {
+    opt.verify_checksums = true;
+  }
+  BlockContents contents;
+  if (!ReadBlock(rep_->file, opt, footer.metaindex_handle(), &contents).ok()) {
+    // Do not propagate errors since meta info is not needed for operation
+    return;
+  }
+  Block* meta = new Block(contents);
+
+  Iterator* iter = meta->NewIterator(BytewiseComparator());
+  std::string key = "filter.";
+  key.append(rep_->options.filter_policy->Name());
+  iter->Seek(key);
+  if (iter->Valid() && iter->key() == Slice(key)) {
+    ReadFilter(iter->value());
+  }
+  delete iter;
+  delete meta;
+}
+
+void Table::ReadFilter(const Slice& filter_handle_value) {
+  Slice v = filter_handle_value;
+  BlockHandle filter_handle;
+  if (!filter_handle.DecodeFrom(&v).ok()) {
+    return;
+  }
+
+  // We might want to unify with ReadBlock() if we start
+  // requiring checksum verification in Table::Open.
+  ReadOptions opt;
+  if (rep_->options.paranoid_checks) {
+    opt.verify_checksums = true;
+  }
+  BlockContents block;
+  if (!ReadBlock(rep_->file, opt, filter_handle, &block).ok()) {
+    return;
+  }
+  if (block.heap_allocated) {
+    rep_->filter_data = block.data.data();  // Will need to delete later
+  }
+  rep_->filter = new FilterBlockReader(rep_->options.filter_policy, block.data);
+}
+
+Table::~Table() { delete rep_; }
+
+static void DeleteBlock(void* arg, void* ignored) {
+  delete reinterpret_cast<Block*>(arg);
+}
+
+static void DeleteCachedBlock(const Slice& key, void* value) {
+  Block* block = reinterpret_cast<Block*>(value);
+  delete block;
+}
+
+static void ReleaseBlock(void* arg, void* h) {
+  Cache* cache = reinterpret_cast<Cache*>(arg);
+  Cache::Handle* handle = reinterpret_cast<Cache::Handle*>(h);
+  cache->Release(handle);
+}
+
+// Convert an index iterator value (i.e., an encoded BlockHandle)
+// into an iterator over the contents of the corresponding block.
+Iterator* Table::BlockReader(void* arg, const ReadOptions& options,
+                             const Slice& index_value) {
+  Table* table = reinterpret_cast<Table*>(arg);
+  Cache* block_cache = table->rep_->options.block_cache;
+  Block* block = nullptr;
+  Cache::Handle* cache_handle = nullptr;
+
+  BlockHandle handle;
+  Slice input = index_value;
+  Status s = handle.DecodeFrom(&input);
+  // We intentionally allow extra stuff in index_value so that we
+  // can add more features in the future.
+
+  if (s.ok()) {
+    BlockContents contents;
+    if (block_cache != nullptr) {
+      char cache_key_buffer[16];
+      EncodeFixed64(cache_key_buffer, table->rep_->cache_id);
+      EncodeFixed64(cache_key_buffer + 8, handle.offset());
+      Slice key(cache_key_buffer, sizeof(cache_key_buffer));
+      cache_handle = block_cache->Lookup(key);
+      if (cache_handle != nullptr) {
+        block = reinterpret_cast<Block*>(block_cache->Value(cache_handle));
+      } else {
+        s = ReadBlock(table->rep_->file, options, handle, &contents);
+        if (s.ok()) {
+          block = new Block(contents);
+          if (contents.cachable && options.fill_cache) {
+            cache_handle = block_cache->Insert(key, block, block->size(),
+                                               &DeleteCachedBlock);
+          }
+        }
+      }
+    } else {
+      s = ReadBlock(table->rep_->file, options, handle, &contents);
+      if (s.ok()) {
+        block = new Block(contents);
+      }
+    }
+  }
+
+  Iterator* iter;
+  if (block != nullptr) {
+    iter = block->NewIterator(table->rep_->options.comparator);
+    if (cache_handle == nullptr) {
+      iter->RegisterCleanup(&DeleteBlock, block, nullptr);
+    } else {
+      iter->RegisterCleanup(&ReleaseBlock, block_cache, cache_handle);
+    }
+  } else {
+    iter = NewErrorIterator(s);
+  }
+  return iter;
+}
+
+Iterator* Table::NewIterator(const ReadOptions& options) const {
+  return NewTwoLevelIterator(
+      rep_->index_block->NewIterator(rep_->options.comparator),
+      &Table::BlockReader, const_cast<Table*>(this), options);
+}
+
+Status Table::InternalGet(const ReadOptions& options, const Slice& k, void* arg,
+                          void (*handle_result)(void*, const Slice&,
+                                                const Slice&)) {
+  Status s;
+  Iterator* iiter = rep_->index_block->NewIterator(rep_->options.comparator);
+  iiter->Seek(k);
+  if (iiter->Valid()) {
+    Slice handle_value = iiter->value();
+    FilterBlockReader* filter = rep_->filter;
+    BlockHandle handle;
+    if (filter != nullptr && handle.DecodeFrom(&handle_value).ok() &&
+        !filter->KeyMayMatch(handle.offset(), k)) {
+      // Not found
+    } else {
+      Iterator* block_iter = BlockReader(this, options, iiter->value());
+      block_iter->Seek(k);
+      if (block_iter->Valid()) {
+        (*handle_result)(arg, block_iter->key(), block_iter->value());
+      }
+      s = block_iter->status();
+      delete block_iter;
+    }
+  }
+  if (s.ok()) {
+    s = iiter->status();
+  }
+  delete iiter;
+  return s;
+}
+
+uint64_t Table::ApproximateOffsetOf(const Slice& key) const {
+  Iterator* index_iter =
+      rep_->index_block->NewIterator(rep_->options.comparator);
+  index_iter->Seek(key);
+  uint64_t result;
+  if (index_iter->Valid()) {
+    BlockHandle handle;
+    Slice input = index_iter->value();
+    Status s = handle.DecodeFrom(&input);
+    if (s.ok()) {
+      result = handle.offset();
+    } else {
+      // Strange: we can't decode the block handle in the index block.
+      // We'll just return the offset of the metaindex block, which is
+      // close to the whole file size for this case.
+      result = rep_->metaindex_handle.offset();
+    }
+  } else {
+    // key is past the last key in the file.  Approximate the offset
+    // by returning the offset of the metaindex block (which is
+    // right near the end of the file).
+    result = rep_->metaindex_handle.offset();
+  }
+  delete index_iter;
+  return result;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/table_builder.cc b/ChattingApp 000/Pods/leveldb-library/table/table_builder.cc
new file mode 100644
index 0000000..278febf
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/table_builder.cc	
@@ -0,0 +1,265 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/table_builder.h"
+
+#include <assert.h>
+
+#include "leveldb/comparator.h"
+#include "leveldb/env.h"
+#include "leveldb/filter_policy.h"
+#include "leveldb/options.h"
+#include "table/block_builder.h"
+#include "table/filter_block.h"
+#include "table/format.h"
+#include "util/coding.h"
+#include "util/crc32c.h"
+
+namespace leveldb {
+
+struct TableBuilder::Rep {
+  Rep(const Options& opt, WritableFile* f)
+      : options(opt),
+        index_block_options(opt),
+        file(f),
+        offset(0),
+        data_block(&options),
+        index_block(&index_block_options),
+        num_entries(0),
+        closed(false),
+        filter_block(opt.filter_policy == nullptr
+                         ? nullptr
+                         : new FilterBlockBuilder(opt.filter_policy)),
+        pending_index_entry(false) {
+    index_block_options.block_restart_interval = 1;
+  }
+
+  Options options;
+  Options index_block_options;
+  WritableFile* file;
+  uint64_t offset;
+  Status status;
+  BlockBuilder data_block;
+  BlockBuilder index_block;
+  std::string last_key;
+  int64_t num_entries;
+  bool closed;  // Either Finish() or Abandon() has been called.
+  FilterBlockBuilder* filter_block;
+
+  // We do not emit the index entry for a block until we have seen the
+  // first key for the next data block.  This allows us to use shorter
+  // keys in the index block.  For example, consider a block boundary
+  // between the keys "the quick brown fox" and "the who".  We can use
+  // "the r" as the key for the index block entry since it is >= all
+  // entries in the first block and < all entries in subsequent
+  // blocks.
+  //
+  // Invariant: r->pending_index_entry is true only if data_block is empty.
+  bool pending_index_entry;
+  BlockHandle pending_handle;  // Handle to add to index block
+
+  std::string compressed_output;
+};
+
+TableBuilder::TableBuilder(const Options& options, WritableFile* file)
+    : rep_(new Rep(options, file)) {
+  if (rep_->filter_block != nullptr) {
+    rep_->filter_block->StartBlock(0);
+  }
+}
+
+TableBuilder::~TableBuilder() {
+  assert(rep_->closed);  // Catch errors where caller forgot to call Finish()
+  delete rep_->filter_block;
+  delete rep_;
+}
+
+Status TableBuilder::ChangeOptions(const Options& options) {
+  // Note: if more fields are added to Options, update
+  // this function to catch changes that should not be allowed to
+  // change in the middle of building a Table.
+  if (options.comparator != rep_->options.comparator) {
+    return Status::InvalidArgument("changing comparator while building table");
+  }
+
+  // Note that any live BlockBuilders point to rep_->options and therefore
+  // will automatically pick up the updated options.
+  rep_->options = options;
+  rep_->index_block_options = options;
+  rep_->index_block_options.block_restart_interval = 1;
+  return Status::OK();
+}
+
+void TableBuilder::Add(const Slice& key, const Slice& value) {
+  Rep* r = rep_;
+  assert(!r->closed);
+  if (!ok()) return;
+  if (r->num_entries > 0) {
+    assert(r->options.comparator->Compare(key, Slice(r->last_key)) > 0);
+  }
+
+  if (r->pending_index_entry) {
+    assert(r->data_block.empty());
+    r->options.comparator->FindShortestSeparator(&r->last_key, key);
+    std::string handle_encoding;
+    r->pending_handle.EncodeTo(&handle_encoding);
+    r->index_block.Add(r->last_key, Slice(handle_encoding));
+    r->pending_index_entry = false;
+  }
+
+  if (r->filter_block != nullptr) {
+    r->filter_block->AddKey(key);
+  }
+
+  r->last_key.assign(key.data(), key.size());
+  r->num_entries++;
+  r->data_block.Add(key, value);
+
+  const size_t estimated_block_size = r->data_block.CurrentSizeEstimate();
+  if (estimated_block_size >= r->options.block_size) {
+    Flush();
+  }
+}
+
+void TableBuilder::Flush() {
+  Rep* r = rep_;
+  assert(!r->closed);
+  if (!ok()) return;
+  if (r->data_block.empty()) return;
+  assert(!r->pending_index_entry);
+  WriteBlock(&r->data_block, &r->pending_handle);
+  if (ok()) {
+    r->pending_index_entry = true;
+    r->status = r->file->Flush();
+  }
+  if (r->filter_block != nullptr) {
+    r->filter_block->StartBlock(r->offset);
+  }
+}
+
+void TableBuilder::WriteBlock(BlockBuilder* block, BlockHandle* handle) {
+  // File format contains a sequence of blocks where each block has:
+  //    block_data: uint8[n]
+  //    type: uint8
+  //    crc: uint32
+  assert(ok());
+  Rep* r = rep_;
+  Slice raw = block->Finish();
+
+  Slice block_contents;
+  CompressionType type = r->options.compression;
+  // TODO(postrelease): Support more compression options: zlib?
+  switch (type) {
+    case kNoCompression:
+      block_contents = raw;
+      break;
+
+    case kSnappyCompression: {
+      std::string* compressed = &r->compressed_output;
+      if (port::Snappy_Compress(raw.data(), raw.size(), compressed) &&
+          compressed->size() < raw.size() - (raw.size() / 8u)) {
+        block_contents = *compressed;
+      } else {
+        // Snappy not supported, or compressed less than 12.5%, so just
+        // store uncompressed form
+        block_contents = raw;
+        type = kNoCompression;
+      }
+      break;
+    }
+  }
+  WriteRawBlock(block_contents, type, handle);
+  r->compressed_output.clear();
+  block->Reset();
+}
+
+void TableBuilder::WriteRawBlock(const Slice& block_contents,
+                                 CompressionType type, BlockHandle* handle) {
+  Rep* r = rep_;
+  handle->set_offset(r->offset);
+  handle->set_size(block_contents.size());
+  r->status = r->file->Append(block_contents);
+  if (r->status.ok()) {
+    char trailer[kBlockTrailerSize];
+    trailer[0] = type;
+    uint32_t crc = crc32c::Value(block_contents.data(), block_contents.size());
+    crc = crc32c::Extend(crc, trailer, 1);  // Extend crc to cover block type
+    EncodeFixed32(trailer + 1, crc32c::Mask(crc));
+    r->status = r->file->Append(Slice(trailer, kBlockTrailerSize));
+    if (r->status.ok()) {
+      r->offset += block_contents.size() + kBlockTrailerSize;
+    }
+  }
+}
+
+Status TableBuilder::status() const { return rep_->status; }
+
+Status TableBuilder::Finish() {
+  Rep* r = rep_;
+  Flush();
+  assert(!r->closed);
+  r->closed = true;
+
+  BlockHandle filter_block_handle, metaindex_block_handle, index_block_handle;
+
+  // Write filter block
+  if (ok() && r->filter_block != nullptr) {
+    WriteRawBlock(r->filter_block->Finish(), kNoCompression,
+                  &filter_block_handle);
+  }
+
+  // Write metaindex block
+  if (ok()) {
+    BlockBuilder meta_index_block(&r->options);
+    if (r->filter_block != nullptr) {
+      // Add mapping from "filter.Name" to location of filter data
+      std::string key = "filter.";
+      key.append(r->options.filter_policy->Name());
+      std::string handle_encoding;
+      filter_block_handle.EncodeTo(&handle_encoding);
+      meta_index_block.Add(key, handle_encoding);
+    }
+
+    // TODO(postrelease): Add stats and other meta blocks
+    WriteBlock(&meta_index_block, &metaindex_block_handle);
+  }
+
+  // Write index block
+  if (ok()) {
+    if (r->pending_index_entry) {
+      r->options.comparator->FindShortSuccessor(&r->last_key);
+      std::string handle_encoding;
+      r->pending_handle.EncodeTo(&handle_encoding);
+      r->index_block.Add(r->last_key, Slice(handle_encoding));
+      r->pending_index_entry = false;
+    }
+    WriteBlock(&r->index_block, &index_block_handle);
+  }
+
+  // Write footer
+  if (ok()) {
+    Footer footer;
+    footer.set_metaindex_handle(metaindex_block_handle);
+    footer.set_index_handle(index_block_handle);
+    std::string footer_encoding;
+    footer.EncodeTo(&footer_encoding);
+    r->status = r->file->Append(footer_encoding);
+    if (r->status.ok()) {
+      r->offset += footer_encoding.size();
+    }
+  }
+  return r->status;
+}
+
+void TableBuilder::Abandon() {
+  Rep* r = rep_;
+  assert(!r->closed);
+  r->closed = true;
+}
+
+uint64_t TableBuilder::NumEntries() const { return rep_->num_entries; }
+
+uint64_t TableBuilder::FileSize() const { return rep_->offset; }
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.cc b/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.cc
new file mode 100644
index 0000000..5340a4d
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.cc	
@@ -0,0 +1,171 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "table/two_level_iterator.h"
+
+#include "leveldb/table.h"
+#include "table/block.h"
+#include "table/format.h"
+#include "table/iterator_wrapper.h"
+
+namespace leveldb {
+
+namespace {
+
+typedef Iterator* (*BlockFunction)(void*, const ReadOptions&, const Slice&);
+
+class TwoLevelIterator : public Iterator {
+ public:
+  TwoLevelIterator(Iterator* index_iter, BlockFunction block_function,
+                   void* arg, const ReadOptions& options);
+
+  virtual ~TwoLevelIterator();
+
+  virtual void Seek(const Slice& target);
+  virtual void SeekToFirst();
+  virtual void SeekToLast();
+  virtual void Next();
+  virtual void Prev();
+
+  virtual bool Valid() const { return data_iter_.Valid(); }
+  virtual Slice key() const {
+    assert(Valid());
+    return data_iter_.key();
+  }
+  virtual Slice value() const {
+    assert(Valid());
+    return data_iter_.value();
+  }
+  virtual Status status() const {
+    // It'd be nice if status() returned a const Status& instead of a Status
+    if (!index_iter_.status().ok()) {
+      return index_iter_.status();
+    } else if (data_iter_.iter() != nullptr && !data_iter_.status().ok()) {
+      return data_iter_.status();
+    } else {
+      return status_;
+    }
+  }
+
+ private:
+  void SaveError(const Status& s) {
+    if (status_.ok() && !s.ok()) status_ = s;
+  }
+  void SkipEmptyDataBlocksForward();
+  void SkipEmptyDataBlocksBackward();
+  void SetDataIterator(Iterator* data_iter);
+  void InitDataBlock();
+
+  BlockFunction block_function_;
+  void* arg_;
+  const ReadOptions options_;
+  Status status_;
+  IteratorWrapper index_iter_;
+  IteratorWrapper data_iter_;  // May be nullptr
+  // If data_iter_ is non-null, then "data_block_handle_" holds the
+  // "index_value" passed to block_function_ to create the data_iter_.
+  std::string data_block_handle_;
+};
+
+TwoLevelIterator::TwoLevelIterator(Iterator* index_iter,
+                                   BlockFunction block_function, void* arg,
+                                   const ReadOptions& options)
+    : block_function_(block_function),
+      arg_(arg),
+      options_(options),
+      index_iter_(index_iter),
+      data_iter_(nullptr) {}
+
+TwoLevelIterator::~TwoLevelIterator() {}
+
+void TwoLevelIterator::Seek(const Slice& target) {
+  index_iter_.Seek(target);
+  InitDataBlock();
+  if (data_iter_.iter() != nullptr) data_iter_.Seek(target);
+  SkipEmptyDataBlocksForward();
+}
+
+void TwoLevelIterator::SeekToFirst() {
+  index_iter_.SeekToFirst();
+  InitDataBlock();
+  if (data_iter_.iter() != nullptr) data_iter_.SeekToFirst();
+  SkipEmptyDataBlocksForward();
+}
+
+void TwoLevelIterator::SeekToLast() {
+  index_iter_.SeekToLast();
+  InitDataBlock();
+  if (data_iter_.iter() != nullptr) data_iter_.SeekToLast();
+  SkipEmptyDataBlocksBackward();
+}
+
+void TwoLevelIterator::Next() {
+  assert(Valid());
+  data_iter_.Next();
+  SkipEmptyDataBlocksForward();
+}
+
+void TwoLevelIterator::Prev() {
+  assert(Valid());
+  data_iter_.Prev();
+  SkipEmptyDataBlocksBackward();
+}
+
+void TwoLevelIterator::SkipEmptyDataBlocksForward() {
+  while (data_iter_.iter() == nullptr || !data_iter_.Valid()) {
+    // Move to next block
+    if (!index_iter_.Valid()) {
+      SetDataIterator(nullptr);
+      return;
+    }
+    index_iter_.Next();
+    InitDataBlock();
+    if (data_iter_.iter() != nullptr) data_iter_.SeekToFirst();
+  }
+}
+
+void TwoLevelIterator::SkipEmptyDataBlocksBackward() {
+  while (data_iter_.iter() == nullptr || !data_iter_.Valid()) {
+    // Move to next block
+    if (!index_iter_.Valid()) {
+      SetDataIterator(nullptr);
+      return;
+    }
+    index_iter_.Prev();
+    InitDataBlock();
+    if (data_iter_.iter() != nullptr) data_iter_.SeekToLast();
+  }
+}
+
+void TwoLevelIterator::SetDataIterator(Iterator* data_iter) {
+  if (data_iter_.iter() != nullptr) SaveError(data_iter_.status());
+  data_iter_.Set(data_iter);
+}
+
+void TwoLevelIterator::InitDataBlock() {
+  if (!index_iter_.Valid()) {
+    SetDataIterator(nullptr);
+  } else {
+    Slice handle = index_iter_.value();
+    if (data_iter_.iter() != nullptr &&
+        handle.compare(data_block_handle_) == 0) {
+      // data_iter_ is already constructed with this iterator, so
+      // no need to change anything
+    } else {
+      Iterator* iter = (*block_function_)(arg_, options_, handle);
+      data_block_handle_.assign(handle.data(), handle.size());
+      SetDataIterator(iter);
+    }
+  }
+}
+
+}  // namespace
+
+Iterator* NewTwoLevelIterator(Iterator* index_iter,
+                              BlockFunction block_function, void* arg,
+                              const ReadOptions& options) {
+  return new TwoLevelIterator(index_iter, block_function, arg, options);
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.h b/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.h
new file mode 100644
index 0000000..81ffe80
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/table/two_level_iterator.h	
@@ -0,0 +1,31 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_
+#define STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_
+
+#include "leveldb/iterator.h"
+
+namespace leveldb {
+
+struct ReadOptions;
+
+// Return a new two level iterator.  A two-level iterator contains an
+// index iterator whose values point to a sequence of blocks where
+// each block is itself a sequence of key,value pairs.  The returned
+// two-level iterator yields the concatenation of all key/value pairs
+// in the sequence of blocks.  Takes ownership of "index_iter" and
+// will delete it when no longer needed.
+//
+// Uses a supplied function to convert an index_iter value into
+// an iterator over the contents of the corresponding block.
+Iterator* NewTwoLevelIterator(
+    Iterator* index_iter,
+    Iterator* (*block_function)(void* arg, const ReadOptions& options,
+                                const Slice& index_value),
+    void* arg, const ReadOptions& options);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_TABLE_TWO_LEVEL_ITERATOR_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/arena.cc b/ChattingApp 000/Pods/leveldb-library/util/arena.cc
new file mode 100644
index 0000000..46e3b2e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/arena.cc	
@@ -0,0 +1,66 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/arena.h"
+
+namespace leveldb {
+
+static const int kBlockSize = 4096;
+
+Arena::Arena()
+    : alloc_ptr_(nullptr), alloc_bytes_remaining_(0), memory_usage_(0) {}
+
+Arena::~Arena() {
+  for (size_t i = 0; i < blocks_.size(); i++) {
+    delete[] blocks_[i];
+  }
+}
+
+char* Arena::AllocateFallback(size_t bytes) {
+  if (bytes > kBlockSize / 4) {
+    // Object is more than a quarter of our block size.  Allocate it separately
+    // to avoid wasting too much space in leftover bytes.
+    char* result = AllocateNewBlock(bytes);
+    return result;
+  }
+
+  // We waste the remaining space in the current block.
+  alloc_ptr_ = AllocateNewBlock(kBlockSize);
+  alloc_bytes_remaining_ = kBlockSize;
+
+  char* result = alloc_ptr_;
+  alloc_ptr_ += bytes;
+  alloc_bytes_remaining_ -= bytes;
+  return result;
+}
+
+char* Arena::AllocateAligned(size_t bytes) {
+  const int align = (sizeof(void*) > 8) ? sizeof(void*) : 8;
+  static_assert((align & (align - 1)) == 0,
+                "Pointer size should be a power of 2");
+  size_t current_mod = reinterpret_cast<uintptr_t>(alloc_ptr_) & (align - 1);
+  size_t slop = (current_mod == 0 ? 0 : align - current_mod);
+  size_t needed = bytes + slop;
+  char* result;
+  if (needed <= alloc_bytes_remaining_) {
+    result = alloc_ptr_ + slop;
+    alloc_ptr_ += needed;
+    alloc_bytes_remaining_ -= needed;
+  } else {
+    // AllocateFallback always returned aligned memory
+    result = AllocateFallback(bytes);
+  }
+  assert((reinterpret_cast<uintptr_t>(result) & (align - 1)) == 0);
+  return result;
+}
+
+char* Arena::AllocateNewBlock(size_t block_bytes) {
+  char* result = new char[block_bytes];
+  blocks_.push_back(result);
+  memory_usage_.fetch_add(block_bytes + sizeof(char*),
+                          std::memory_order_relaxed);
+  return result;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/arena.h b/ChattingApp 000/Pods/leveldb-library/util/arena.h
new file mode 100644
index 0000000..68fc55d
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/arena.h	
@@ -0,0 +1,71 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_ARENA_H_
+#define STORAGE_LEVELDB_UTIL_ARENA_H_
+
+#include <atomic>
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+namespace leveldb {
+
+class Arena {
+ public:
+  Arena();
+
+  Arena(const Arena&) = delete;
+  Arena& operator=(const Arena&) = delete;
+
+  ~Arena();
+
+  // Return a pointer to a newly allocated memory block of "bytes" bytes.
+  char* Allocate(size_t bytes);
+
+  // Allocate memory with the normal alignment guarantees provided by malloc.
+  char* AllocateAligned(size_t bytes);
+
+  // Returns an estimate of the total memory usage of data allocated
+  // by the arena.
+  size_t MemoryUsage() const {
+    return memory_usage_.load(std::memory_order_relaxed);
+  }
+
+ private:
+  char* AllocateFallback(size_t bytes);
+  char* AllocateNewBlock(size_t block_bytes);
+
+  // Allocation state
+  char* alloc_ptr_;
+  size_t alloc_bytes_remaining_;
+
+  // Array of new[] allocated memory blocks
+  std::vector<char*> blocks_;
+
+  // Total memory usage of the arena.
+  //
+  // TODO(costan): This member is accessed via atomics, but the others are
+  //               accessed without any locking. Is this OK?
+  std::atomic<size_t> memory_usage_;
+};
+
+inline char* Arena::Allocate(size_t bytes) {
+  // The semantics of what to return are a bit messy if we allow
+  // 0-byte allocations, so we disallow them here (we don't need
+  // them for our internal use).
+  assert(bytes > 0);
+  if (bytes <= alloc_bytes_remaining_) {
+    char* result = alloc_ptr_;
+    alloc_ptr_ += bytes;
+    alloc_bytes_remaining_ -= bytes;
+    return result;
+  }
+  return AllocateFallback(bytes);
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_ARENA_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/bloom.cc b/ChattingApp 000/Pods/leveldb-library/util/bloom.cc
new file mode 100644
index 0000000..7f97464
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/bloom.cc	
@@ -0,0 +1,92 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/filter_policy.h"
+
+#include "leveldb/slice.h"
+#include "util/hash.h"
+
+namespace leveldb {
+
+namespace {
+static uint32_t BloomHash(const Slice& key) {
+  return Hash(key.data(), key.size(), 0xbc9f1d34);
+}
+
+class BloomFilterPolicy : public FilterPolicy {
+ public:
+  explicit BloomFilterPolicy(int bits_per_key) : bits_per_key_(bits_per_key) {
+    // We intentionally round down to reduce probing cost a little bit
+    k_ = static_cast<size_t>(bits_per_key * 0.69);  // 0.69 =~ ln(2)
+    if (k_ < 1) k_ = 1;
+    if (k_ > 30) k_ = 30;
+  }
+
+  virtual const char* Name() const { return "leveldb.BuiltinBloomFilter2"; }
+
+  virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const {
+    // Compute bloom filter size (in both bits and bytes)
+    size_t bits = n * bits_per_key_;
+
+    // For small n, we can see a very high false positive rate.  Fix it
+    // by enforcing a minimum bloom filter length.
+    if (bits < 64) bits = 64;
+
+    size_t bytes = (bits + 7) / 8;
+    bits = bytes * 8;
+
+    const size_t init_size = dst->size();
+    dst->resize(init_size + bytes, 0);
+    dst->push_back(static_cast<char>(k_));  // Remember # of probes in filter
+    char* array = &(*dst)[init_size];
+    for (int i = 0; i < n; i++) {
+      // Use double-hashing to generate a sequence of hash values.
+      // See analysis in [Kirsch,Mitzenmacher 2006].
+      uint32_t h = BloomHash(keys[i]);
+      const uint32_t delta = (h >> 17) | (h << 15);  // Rotate right 17 bits
+      for (size_t j = 0; j < k_; j++) {
+        const uint32_t bitpos = h % bits;
+        array[bitpos / 8] |= (1 << (bitpos % 8));
+        h += delta;
+      }
+    }
+  }
+
+  virtual bool KeyMayMatch(const Slice& key, const Slice& bloom_filter) const {
+    const size_t len = bloom_filter.size();
+    if (len < 2) return false;
+
+    const char* array = bloom_filter.data();
+    const size_t bits = (len - 1) * 8;
+
+    // Use the encoded k so that we can read filters generated by
+    // bloom filters created using different parameters.
+    const size_t k = array[len - 1];
+    if (k > 30) {
+      // Reserved for potentially new encodings for short bloom filters.
+      // Consider it a match.
+      return true;
+    }
+
+    uint32_t h = BloomHash(key);
+    const uint32_t delta = (h >> 17) | (h << 15);  // Rotate right 17 bits
+    for (size_t j = 0; j < k; j++) {
+      const uint32_t bitpos = h % bits;
+      if ((array[bitpos / 8] & (1 << (bitpos % 8))) == 0) return false;
+      h += delta;
+    }
+    return true;
+  }
+
+ private:
+  size_t bits_per_key_;
+  size_t k_;
+};
+}  // namespace
+
+const FilterPolicy* NewBloomFilterPolicy(int bits_per_key) {
+  return new BloomFilterPolicy(bits_per_key);
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/cache.cc b/ChattingApp 000/Pods/leveldb-library/util/cache.cc
new file mode 100644
index 0000000..0f801cc
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/cache.cc	
@@ -0,0 +1,400 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "leveldb/cache.h"
+#include "port/port.h"
+#include "port/thread_annotations.h"
+#include "util/hash.h"
+#include "util/mutexlock.h"
+
+namespace leveldb {
+
+Cache::~Cache() {}
+
+namespace {
+
+// LRU cache implementation
+//
+// Cache entries have an "in_cache" boolean indicating whether the cache has a
+// reference on the entry.  The only ways that this can become false without the
+// entry being passed to its "deleter" are via Erase(), via Insert() when
+// an element with a duplicate key is inserted, or on destruction of the cache.
+//
+// The cache keeps two linked lists of items in the cache.  All items in the
+// cache are in one list or the other, and never both.  Items still referenced
+// by clients but erased from the cache are in neither list.  The lists are:
+// - in-use:  contains the items currently referenced by clients, in no
+//   particular order.  (This list is used for invariant checking.  If we
+//   removed the check, elements that would otherwise be on this list could be
+//   left as disconnected singleton lists.)
+// - LRU:  contains the items not currently referenced by clients, in LRU order
+// Elements are moved between these lists by the Ref() and Unref() methods,
+// when they detect an element in the cache acquiring or losing its only
+// external reference.
+
+// An entry is a variable length heap-allocated structure.  Entries
+// are kept in a circular doubly linked list ordered by access time.
+struct LRUHandle {
+  void* value;
+  void (*deleter)(const Slice&, void* value);
+  LRUHandle* next_hash;
+  LRUHandle* next;
+  LRUHandle* prev;
+  size_t charge;  // TODO(opt): Only allow uint32_t?
+  size_t key_length;
+  bool in_cache;     // Whether entry is in the cache.
+  uint32_t refs;     // References, including cache reference, if present.
+  uint32_t hash;     // Hash of key(); used for fast sharding and comparisons
+  char key_data[1];  // Beginning of key
+
+  Slice key() const {
+    // next_ is only equal to this if the LRU handle is the list head of an
+    // empty list. List heads never have meaningful keys.
+    assert(next != this);
+
+    return Slice(key_data, key_length);
+  }
+};
+
+// We provide our own simple hash table since it removes a whole bunch
+// of porting hacks and is also faster than some of the built-in hash
+// table implementations in some of the compiler/runtime combinations
+// we have tested.  E.g., readrandom speeds up by ~5% over the g++
+// 4.4.3's builtin hashtable.
+class HandleTable {
+ public:
+  HandleTable() : length_(0), elems_(0), list_(nullptr) { Resize(); }
+  ~HandleTable() { delete[] list_; }
+
+  LRUHandle* Lookup(const Slice& key, uint32_t hash) {
+    return *FindPointer(key, hash);
+  }
+
+  LRUHandle* Insert(LRUHandle* h) {
+    LRUHandle** ptr = FindPointer(h->key(), h->hash);
+    LRUHandle* old = *ptr;
+    h->next_hash = (old == nullptr ? nullptr : old->next_hash);
+    *ptr = h;
+    if (old == nullptr) {
+      ++elems_;
+      if (elems_ > length_) {
+        // Since each cache entry is fairly large, we aim for a small
+        // average linked list length (<= 1).
+        Resize();
+      }
+    }
+    return old;
+  }
+
+  LRUHandle* Remove(const Slice& key, uint32_t hash) {
+    LRUHandle** ptr = FindPointer(key, hash);
+    LRUHandle* result = *ptr;
+    if (result != nullptr) {
+      *ptr = result->next_hash;
+      --elems_;
+    }
+    return result;
+  }
+
+ private:
+  // The table consists of an array of buckets where each bucket is
+  // a linked list of cache entries that hash into the bucket.
+  uint32_t length_;
+  uint32_t elems_;
+  LRUHandle** list_;
+
+  // Return a pointer to slot that points to a cache entry that
+  // matches key/hash.  If there is no such cache entry, return a
+  // pointer to the trailing slot in the corresponding linked list.
+  LRUHandle** FindPointer(const Slice& key, uint32_t hash) {
+    LRUHandle** ptr = &list_[hash & (length_ - 1)];
+    while (*ptr != nullptr && ((*ptr)->hash != hash || key != (*ptr)->key())) {
+      ptr = &(*ptr)->next_hash;
+    }
+    return ptr;
+  }
+
+  void Resize() {
+    uint32_t new_length = 4;
+    while (new_length < elems_) {
+      new_length *= 2;
+    }
+    LRUHandle** new_list = new LRUHandle*[new_length];
+    memset(new_list, 0, sizeof(new_list[0]) * new_length);
+    uint32_t count = 0;
+    for (uint32_t i = 0; i < length_; i++) {
+      LRUHandle* h = list_[i];
+      while (h != nullptr) {
+        LRUHandle* next = h->next_hash;
+        uint32_t hash = h->hash;
+        LRUHandle** ptr = &new_list[hash & (new_length - 1)];
+        h->next_hash = *ptr;
+        *ptr = h;
+        h = next;
+        count++;
+      }
+    }
+    assert(elems_ == count);
+    delete[] list_;
+    list_ = new_list;
+    length_ = new_length;
+  }
+};
+
+// A single shard of sharded cache.
+class LRUCache {
+ public:
+  LRUCache();
+  ~LRUCache();
+
+  // Separate from constructor so caller can easily make an array of LRUCache
+  void SetCapacity(size_t capacity) { capacity_ = capacity; }
+
+  // Like Cache methods, but with an extra "hash" parameter.
+  Cache::Handle* Insert(const Slice& key, uint32_t hash, void* value,
+                        size_t charge,
+                        void (*deleter)(const Slice& key, void* value));
+  Cache::Handle* Lookup(const Slice& key, uint32_t hash);
+  void Release(Cache::Handle* handle);
+  void Erase(const Slice& key, uint32_t hash);
+  void Prune();
+  size_t TotalCharge() const {
+    MutexLock l(&mutex_);
+    return usage_;
+  }
+
+ private:
+  void LRU_Remove(LRUHandle* e);
+  void LRU_Append(LRUHandle* list, LRUHandle* e);
+  void Ref(LRUHandle* e);
+  void Unref(LRUHandle* e);
+  bool FinishErase(LRUHandle* e) EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  // Initialized before use.
+  size_t capacity_;
+
+  // mutex_ protects the following state.
+  mutable port::Mutex mutex_;
+  size_t usage_ GUARDED_BY(mutex_);
+
+  // Dummy head of LRU list.
+  // lru.prev is newest entry, lru.next is oldest entry.
+  // Entries have refs==1 and in_cache==true.
+  LRUHandle lru_ GUARDED_BY(mutex_);
+
+  // Dummy head of in-use list.
+  // Entries are in use by clients, and have refs >= 2 and in_cache==true.
+  LRUHandle in_use_ GUARDED_BY(mutex_);
+
+  HandleTable table_ GUARDED_BY(mutex_);
+};
+
+LRUCache::LRUCache() : capacity_(0), usage_(0) {
+  // Make empty circular linked lists.
+  lru_.next = &lru_;
+  lru_.prev = &lru_;
+  in_use_.next = &in_use_;
+  in_use_.prev = &in_use_;
+}
+
+LRUCache::~LRUCache() {
+  assert(in_use_.next == &in_use_);  // Error if caller has an unreleased handle
+  for (LRUHandle* e = lru_.next; e != &lru_;) {
+    LRUHandle* next = e->next;
+    assert(e->in_cache);
+    e->in_cache = false;
+    assert(e->refs == 1);  // Invariant of lru_ list.
+    Unref(e);
+    e = next;
+  }
+}
+
+void LRUCache::Ref(LRUHandle* e) {
+  if (e->refs == 1 && e->in_cache) {  // If on lru_ list, move to in_use_ list.
+    LRU_Remove(e);
+    LRU_Append(&in_use_, e);
+  }
+  e->refs++;
+}
+
+void LRUCache::Unref(LRUHandle* e) {
+  assert(e->refs > 0);
+  e->refs--;
+  if (e->refs == 0) {  // Deallocate.
+    assert(!e->in_cache);
+    (*e->deleter)(e->key(), e->value);
+    free(e);
+  } else if (e->in_cache && e->refs == 1) {
+    // No longer in use; move to lru_ list.
+    LRU_Remove(e);
+    LRU_Append(&lru_, e);
+  }
+}
+
+void LRUCache::LRU_Remove(LRUHandle* e) {
+  e->next->prev = e->prev;
+  e->prev->next = e->next;
+}
+
+void LRUCache::LRU_Append(LRUHandle* list, LRUHandle* e) {
+  // Make "e" newest entry by inserting just before *list
+  e->next = list;
+  e->prev = list->prev;
+  e->prev->next = e;
+  e->next->prev = e;
+}
+
+Cache::Handle* LRUCache::Lookup(const Slice& key, uint32_t hash) {
+  MutexLock l(&mutex_);
+  LRUHandle* e = table_.Lookup(key, hash);
+  if (e != nullptr) {
+    Ref(e);
+  }
+  return reinterpret_cast<Cache::Handle*>(e);
+}
+
+void LRUCache::Release(Cache::Handle* handle) {
+  MutexLock l(&mutex_);
+  Unref(reinterpret_cast<LRUHandle*>(handle));
+}
+
+Cache::Handle* LRUCache::Insert(const Slice& key, uint32_t hash, void* value,
+                                size_t charge,
+                                void (*deleter)(const Slice& key,
+                                                void* value)) {
+  MutexLock l(&mutex_);
+
+  LRUHandle* e =
+      reinterpret_cast<LRUHandle*>(malloc(sizeof(LRUHandle) - 1 + key.size()));
+  e->value = value;
+  e->deleter = deleter;
+  e->charge = charge;
+  e->key_length = key.size();
+  e->hash = hash;
+  e->in_cache = false;
+  e->refs = 1;  // for the returned handle.
+  memcpy(e->key_data, key.data(), key.size());
+
+  if (capacity_ > 0) {
+    e->refs++;  // for the cache's reference.
+    e->in_cache = true;
+    LRU_Append(&in_use_, e);
+    usage_ += charge;
+    FinishErase(table_.Insert(e));
+  } else {  // don't cache. (capacity_==0 is supported and turns off caching.)
+    // next is read by key() in an assert, so it must be initialized
+    e->next = nullptr;
+  }
+  while (usage_ > capacity_ && lru_.next != &lru_) {
+    LRUHandle* old = lru_.next;
+    assert(old->refs == 1);
+    bool erased = FinishErase(table_.Remove(old->key(), old->hash));
+    if (!erased) {  // to avoid unused variable when compiled NDEBUG
+      assert(erased);
+    }
+  }
+
+  return reinterpret_cast<Cache::Handle*>(e);
+}
+
+// If e != nullptr, finish removing *e from the cache; it has already been
+// removed from the hash table.  Return whether e != nullptr.
+bool LRUCache::FinishErase(LRUHandle* e) {
+  if (e != nullptr) {
+    assert(e->in_cache);
+    LRU_Remove(e);
+    e->in_cache = false;
+    usage_ -= e->charge;
+    Unref(e);
+  }
+  return e != nullptr;
+}
+
+void LRUCache::Erase(const Slice& key, uint32_t hash) {
+  MutexLock l(&mutex_);
+  FinishErase(table_.Remove(key, hash));
+}
+
+void LRUCache::Prune() {
+  MutexLock l(&mutex_);
+  while (lru_.next != &lru_) {
+    LRUHandle* e = lru_.next;
+    assert(e->refs == 1);
+    bool erased = FinishErase(table_.Remove(e->key(), e->hash));
+    if (!erased) {  // to avoid unused variable when compiled NDEBUG
+      assert(erased);
+    }
+  }
+}
+
+static const int kNumShardBits = 4;
+static const int kNumShards = 1 << kNumShardBits;
+
+class ShardedLRUCache : public Cache {
+ private:
+  LRUCache shard_[kNumShards];
+  port::Mutex id_mutex_;
+  uint64_t last_id_;
+
+  static inline uint32_t HashSlice(const Slice& s) {
+    return Hash(s.data(), s.size(), 0);
+  }
+
+  static uint32_t Shard(uint32_t hash) { return hash >> (32 - kNumShardBits); }
+
+ public:
+  explicit ShardedLRUCache(size_t capacity) : last_id_(0) {
+    const size_t per_shard = (capacity + (kNumShards - 1)) / kNumShards;
+    for (int s = 0; s < kNumShards; s++) {
+      shard_[s].SetCapacity(per_shard);
+    }
+  }
+  virtual ~ShardedLRUCache() {}
+  virtual Handle* Insert(const Slice& key, void* value, size_t charge,
+                         void (*deleter)(const Slice& key, void* value)) {
+    const uint32_t hash = HashSlice(key);
+    return shard_[Shard(hash)].Insert(key, hash, value, charge, deleter);
+  }
+  virtual Handle* Lookup(const Slice& key) {
+    const uint32_t hash = HashSlice(key);
+    return shard_[Shard(hash)].Lookup(key, hash);
+  }
+  virtual void Release(Handle* handle) {
+    LRUHandle* h = reinterpret_cast<LRUHandle*>(handle);
+    shard_[Shard(h->hash)].Release(handle);
+  }
+  virtual void Erase(const Slice& key) {
+    const uint32_t hash = HashSlice(key);
+    shard_[Shard(hash)].Erase(key, hash);
+  }
+  virtual void* Value(Handle* handle) {
+    return reinterpret_cast<LRUHandle*>(handle)->value;
+  }
+  virtual uint64_t NewId() {
+    MutexLock l(&id_mutex_);
+    return ++(last_id_);
+  }
+  virtual void Prune() {
+    for (int s = 0; s < kNumShards; s++) {
+      shard_[s].Prune();
+    }
+  }
+  virtual size_t TotalCharge() const {
+    size_t total = 0;
+    for (int s = 0; s < kNumShards; s++) {
+      total += shard_[s].TotalCharge();
+    }
+    return total;
+  }
+};
+
+}  // end anonymous namespace
+
+Cache* NewLRUCache(size_t capacity) { return new ShardedLRUCache(capacity); }
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/coding.cc b/ChattingApp 000/Pods/leveldb-library/util/coding.cc
new file mode 100644
index 0000000..e2089df
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/coding.cc	
@@ -0,0 +1,192 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/coding.h"
+
+namespace leveldb {
+
+void EncodeFixed32(char* dst, uint32_t value) {
+  if (port::kLittleEndian) {
+    memcpy(dst, &value, sizeof(value));
+  } else {
+    dst[0] = value & 0xff;
+    dst[1] = (value >> 8) & 0xff;
+    dst[2] = (value >> 16) & 0xff;
+    dst[3] = (value >> 24) & 0xff;
+  }
+}
+
+void EncodeFixed64(char* dst, uint64_t value) {
+  if (port::kLittleEndian) {
+    memcpy(dst, &value, sizeof(value));
+  } else {
+    dst[0] = value & 0xff;
+    dst[1] = (value >> 8) & 0xff;
+    dst[2] = (value >> 16) & 0xff;
+    dst[3] = (value >> 24) & 0xff;
+    dst[4] = (value >> 32) & 0xff;
+    dst[5] = (value >> 40) & 0xff;
+    dst[6] = (value >> 48) & 0xff;
+    dst[7] = (value >> 56) & 0xff;
+  }
+}
+
+void PutFixed32(std::string* dst, uint32_t value) {
+  char buf[sizeof(value)];
+  EncodeFixed32(buf, value);
+  dst->append(buf, sizeof(buf));
+}
+
+void PutFixed64(std::string* dst, uint64_t value) {
+  char buf[sizeof(value)];
+  EncodeFixed64(buf, value);
+  dst->append(buf, sizeof(buf));
+}
+
+char* EncodeVarint32(char* dst, uint32_t v) {
+  // Operate on characters as unsigneds
+  unsigned char* ptr = reinterpret_cast<unsigned char*>(dst);
+  static const int B = 128;
+  if (v < (1 << 7)) {
+    *(ptr++) = v;
+  } else if (v < (1 << 14)) {
+    *(ptr++) = v | B;
+    *(ptr++) = v >> 7;
+  } else if (v < (1 << 21)) {
+    *(ptr++) = v | B;
+    *(ptr++) = (v >> 7) | B;
+    *(ptr++) = v >> 14;
+  } else if (v < (1 << 28)) {
+    *(ptr++) = v | B;
+    *(ptr++) = (v >> 7) | B;
+    *(ptr++) = (v >> 14) | B;
+    *(ptr++) = v >> 21;
+  } else {
+    *(ptr++) = v | B;
+    *(ptr++) = (v >> 7) | B;
+    *(ptr++) = (v >> 14) | B;
+    *(ptr++) = (v >> 21) | B;
+    *(ptr++) = v >> 28;
+  }
+  return reinterpret_cast<char*>(ptr);
+}
+
+void PutVarint32(std::string* dst, uint32_t v) {
+  char buf[5];
+  char* ptr = EncodeVarint32(buf, v);
+  dst->append(buf, ptr - buf);
+}
+
+char* EncodeVarint64(char* dst, uint64_t v) {
+  static const int B = 128;
+  unsigned char* ptr = reinterpret_cast<unsigned char*>(dst);
+  while (v >= B) {
+    *(ptr++) = v | B;
+    v >>= 7;
+  }
+  *(ptr++) = static_cast<unsigned char>(v);
+  return reinterpret_cast<char*>(ptr);
+}
+
+void PutVarint64(std::string* dst, uint64_t v) {
+  char buf[10];
+  char* ptr = EncodeVarint64(buf, v);
+  dst->append(buf, ptr - buf);
+}
+
+void PutLengthPrefixedSlice(std::string* dst, const Slice& value) {
+  PutVarint32(dst, value.size());
+  dst->append(value.data(), value.size());
+}
+
+int VarintLength(uint64_t v) {
+  int len = 1;
+  while (v >= 128) {
+    v >>= 7;
+    len++;
+  }
+  return len;
+}
+
+const char* GetVarint32PtrFallback(const char* p, const char* limit,
+                                   uint32_t* value) {
+  uint32_t result = 0;
+  for (uint32_t shift = 0; shift <= 28 && p < limit; shift += 7) {
+    uint32_t byte = *(reinterpret_cast<const unsigned char*>(p));
+    p++;
+    if (byte & 128) {
+      // More bytes are present
+      result |= ((byte & 127) << shift);
+    } else {
+      result |= (byte << shift);
+      *value = result;
+      return reinterpret_cast<const char*>(p);
+    }
+  }
+  return nullptr;
+}
+
+bool GetVarint32(Slice* input, uint32_t* value) {
+  const char* p = input->data();
+  const char* limit = p + input->size();
+  const char* q = GetVarint32Ptr(p, limit, value);
+  if (q == nullptr) {
+    return false;
+  } else {
+    *input = Slice(q, limit - q);
+    return true;
+  }
+}
+
+const char* GetVarint64Ptr(const char* p, const char* limit, uint64_t* value) {
+  uint64_t result = 0;
+  for (uint32_t shift = 0; shift <= 63 && p < limit; shift += 7) {
+    uint64_t byte = *(reinterpret_cast<const unsigned char*>(p));
+    p++;
+    if (byte & 128) {
+      // More bytes are present
+      result |= ((byte & 127) << shift);
+    } else {
+      result |= (byte << shift);
+      *value = result;
+      return reinterpret_cast<const char*>(p);
+    }
+  }
+  return nullptr;
+}
+
+bool GetVarint64(Slice* input, uint64_t* value) {
+  const char* p = input->data();
+  const char* limit = p + input->size();
+  const char* q = GetVarint64Ptr(p, limit, value);
+  if (q == nullptr) {
+    return false;
+  } else {
+    *input = Slice(q, limit - q);
+    return true;
+  }
+}
+
+const char* GetLengthPrefixedSlice(const char* p, const char* limit,
+                                   Slice* result) {
+  uint32_t len;
+  p = GetVarint32Ptr(p, limit, &len);
+  if (p == nullptr) return nullptr;
+  if (p + len > limit) return nullptr;
+  *result = Slice(p, len);
+  return p + len;
+}
+
+bool GetLengthPrefixedSlice(Slice* input, Slice* result) {
+  uint32_t len;
+  if (GetVarint32(input, &len) && input->size() >= len) {
+    *result = Slice(input->data(), len);
+    input->remove_prefix(len);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/coding.h b/ChattingApp 000/Pods/leveldb-library/util/coding.h
new file mode 100644
index 0000000..d9eeaa3
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/coding.h	
@@ -0,0 +1,104 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Endian-neutral encoding:
+// * Fixed-length numbers are encoded with least-significant byte first
+// * In addition we support variable length "varint" encoding
+// * Strings are encoded prefixed by their length in varint format
+
+#ifndef STORAGE_LEVELDB_UTIL_CODING_H_
+#define STORAGE_LEVELDB_UTIL_CODING_H_
+
+#include <stdint.h>
+#include <string.h>
+
+#include <string>
+
+#include "leveldb/slice.h"
+#include "port/port.h"
+
+namespace leveldb {
+
+// Standard Put... routines append to a string
+void PutFixed32(std::string* dst, uint32_t value);
+void PutFixed64(std::string* dst, uint64_t value);
+void PutVarint32(std::string* dst, uint32_t value);
+void PutVarint64(std::string* dst, uint64_t value);
+void PutLengthPrefixedSlice(std::string* dst, const Slice& value);
+
+// Standard Get... routines parse a value from the beginning of a Slice
+// and advance the slice past the parsed value.
+bool GetVarint32(Slice* input, uint32_t* value);
+bool GetVarint64(Slice* input, uint64_t* value);
+bool GetLengthPrefixedSlice(Slice* input, Slice* result);
+
+// Pointer-based variants of GetVarint...  These either store a value
+// in *v and return a pointer just past the parsed value, or return
+// nullptr on error.  These routines only look at bytes in the range
+// [p..limit-1]
+const char* GetVarint32Ptr(const char* p, const char* limit, uint32_t* v);
+const char* GetVarint64Ptr(const char* p, const char* limit, uint64_t* v);
+
+// Returns the length of the varint32 or varint64 encoding of "v"
+int VarintLength(uint64_t v);
+
+// Lower-level versions of Put... that write directly into a character buffer
+// REQUIRES: dst has enough space for the value being written
+void EncodeFixed32(char* dst, uint32_t value);
+void EncodeFixed64(char* dst, uint64_t value);
+
+// Lower-level versions of Put... that write directly into a character buffer
+// and return a pointer just past the last byte written.
+// REQUIRES: dst has enough space for the value being written
+char* EncodeVarint32(char* dst, uint32_t value);
+char* EncodeVarint64(char* dst, uint64_t value);
+
+// Lower-level versions of Get... that read directly from a character buffer
+// without any bounds checking.
+
+inline uint32_t DecodeFixed32(const char* ptr) {
+  if (port::kLittleEndian) {
+    // Load the raw bytes
+    uint32_t result;
+    memcpy(&result, ptr, sizeof(result));  // gcc optimizes this to a plain load
+    return result;
+  } else {
+    return ((static_cast<uint32_t>(static_cast<unsigned char>(ptr[0]))) |
+            (static_cast<uint32_t>(static_cast<unsigned char>(ptr[1])) << 8) |
+            (static_cast<uint32_t>(static_cast<unsigned char>(ptr[2])) << 16) |
+            (static_cast<uint32_t>(static_cast<unsigned char>(ptr[3])) << 24));
+  }
+}
+
+inline uint64_t DecodeFixed64(const char* ptr) {
+  if (port::kLittleEndian) {
+    // Load the raw bytes
+    uint64_t result;
+    memcpy(&result, ptr, sizeof(result));  // gcc optimizes this to a plain load
+    return result;
+  } else {
+    uint64_t lo = DecodeFixed32(ptr);
+    uint64_t hi = DecodeFixed32(ptr + 4);
+    return (hi << 32) | lo;
+  }
+}
+
+// Internal routine for use by fallback path of GetVarint32Ptr
+const char* GetVarint32PtrFallback(const char* p, const char* limit,
+                                   uint32_t* value);
+inline const char* GetVarint32Ptr(const char* p, const char* limit,
+                                  uint32_t* value) {
+  if (p < limit) {
+    uint32_t result = *(reinterpret_cast<const unsigned char*>(p));
+    if ((result & 128) == 0) {
+      *value = result;
+      return p + 1;
+    }
+  }
+  return GetVarint32PtrFallback(p, limit, value);
+}
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_CODING_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/comparator.cc b/ChattingApp 000/Pods/leveldb-library/util/comparator.cc
new file mode 100644
index 0000000..26d1eb3
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/comparator.cc	
@@ -0,0 +1,73 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include <algorithm>
+#include <cstdint>
+#include <string>
+
+#include "leveldb/comparator.h"
+#include "leveldb/slice.h"
+#include "util/logging.h"
+#include "util/no_destructor.h"
+
+namespace leveldb {
+
+Comparator::~Comparator() {}
+
+namespace {
+class BytewiseComparatorImpl : public Comparator {
+ public:
+  BytewiseComparatorImpl() {}
+
+  virtual const char* Name() const { return "leveldb.BytewiseComparator"; }
+
+  virtual int Compare(const Slice& a, const Slice& b) const {
+    return a.compare(b);
+  }
+
+  virtual void FindShortestSeparator(std::string* start,
+                                     const Slice& limit) const {
+    // Find length of common prefix
+    size_t min_length = std::min(start->size(), limit.size());
+    size_t diff_index = 0;
+    while ((diff_index < min_length) &&
+           ((*start)[diff_index] == limit[diff_index])) {
+      diff_index++;
+    }
+
+    if (diff_index >= min_length) {
+      // Do not shorten if one string is a prefix of the other
+    } else {
+      uint8_t diff_byte = static_cast<uint8_t>((*start)[diff_index]);
+      if (diff_byte < static_cast<uint8_t>(0xff) &&
+          diff_byte + 1 < static_cast<uint8_t>(limit[diff_index])) {
+        (*start)[diff_index]++;
+        start->resize(diff_index + 1);
+        assert(Compare(*start, limit) < 0);
+      }
+    }
+  }
+
+  virtual void FindShortSuccessor(std::string* key) const {
+    // Find first character that can be incremented
+    size_t n = key->size();
+    for (size_t i = 0; i < n; i++) {
+      const uint8_t byte = (*key)[i];
+      if (byte != static_cast<uint8_t>(0xff)) {
+        (*key)[i] = byte + 1;
+        key->resize(i + 1);
+        return;
+      }
+    }
+    // *key is a run of 0xffs.  Leave it alone.
+  }
+};
+}  // namespace
+
+const Comparator* BytewiseComparator() {
+  static NoDestructor<BytewiseComparatorImpl> singleton;
+  return singleton.get();
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/crc32c.cc b/ChattingApp 000/Pods/leveldb-library/util/crc32c.cc
new file mode 100644
index 0000000..c2e61f7
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/crc32c.cc	
@@ -0,0 +1,380 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// A portable implementation of crc32c.
+
+#include "util/crc32c.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "port/port.h"
+#include "util/coding.h"
+
+namespace leveldb {
+namespace crc32c {
+
+namespace {
+
+const uint32_t kByteExtensionTable[256] = {
+    0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, 0xc79a971f, 0x35f1141c,
+    0x26a1e7e8, 0xd4ca64eb, 0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b,
+    0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24, 0x105ec76f, 0xe235446c,
+    0xf165b798, 0x030e349b, 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384,
+    0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, 0x5d1d08bf, 0xaf768bbc,
+    0xbc267848, 0x4e4dfb4b, 0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a,
+    0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35, 0xaa64d611, 0x580f5512,
+    0x4b5fa6e6, 0xb93425e5, 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa,
+    0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, 0xf779deae, 0x05125dad,
+    0x1642ae59, 0xe4292d5a, 0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a,
+    0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595, 0x417b1dbc, 0xb3109ebf,
+    0xa0406d4b, 0x522bee48, 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957,
+    0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, 0x0c38d26c, 0xfe53516f,
+    0xed03a29b, 0x1f682198, 0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927,
+    0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38, 0xdbfc821c, 0x2997011f,
+    0x3ac7f2eb, 0xc8ac71e8, 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7,
+    0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, 0xa65c047d, 0x5437877e,
+    0x4767748a, 0xb50cf789, 0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859,
+    0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46, 0x7198540d, 0x83f3d70e,
+    0x90a324fa, 0x62c8a7f9, 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6,
+    0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, 0x3cdb9bdd, 0xceb018de,
+    0xdde0eb2a, 0x2f8b6829, 0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c,
+    0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93, 0x082f63b7, 0xfa44e0b4,
+    0xe9141340, 0x1b7f9043, 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c,
+    0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, 0x55326b08, 0xa759e80b,
+    0xb4091bff, 0x466298fc, 0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c,
+    0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033, 0xa24bb5a6, 0x502036a5,
+    0x4370c551, 0xb11b4652, 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d,
+    0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, 0xef087a76, 0x1d63f975,
+    0x0e330a81, 0xfc588982, 0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d,
+    0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622, 0x38cc2a06, 0xcaa7a905,
+    0xd9f75af1, 0x2b9cd9f2, 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed,
+    0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, 0x0417b1db, 0xf67c32d8,
+    0xe52cc12c, 0x1747422f, 0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff,
+    0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0, 0xd3d3e1ab, 0x21b862a8,
+    0x32e8915c, 0xc083125f, 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540,
+    0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, 0x9e902e7b, 0x6cfbad78,
+    0x7fab5e8c, 0x8dc0dd8f, 0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee,
+    0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1, 0x69e9f0d5, 0x9b8273d6,
+    0x88d28022, 0x7ab90321, 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e,
+    0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, 0x34f4f86a, 0xc69f7b69,
+    0xd5cf889d, 0x27a40b9e, 0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e,
+    0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351};
+
+const uint32_t kStrideExtensionTable0[256] = {
+    0x00000000, 0x30d23865, 0x61a470ca, 0x517648af, 0xc348e194, 0xf39ad9f1,
+    0xa2ec915e, 0x923ea93b, 0x837db5d9, 0xb3af8dbc, 0xe2d9c513, 0xd20bfd76,
+    0x4035544d, 0x70e76c28, 0x21912487, 0x11431ce2, 0x03171d43, 0x33c52526,
+    0x62b36d89, 0x526155ec, 0xc05ffcd7, 0xf08dc4b2, 0xa1fb8c1d, 0x9129b478,
+    0x806aa89a, 0xb0b890ff, 0xe1ced850, 0xd11ce035, 0x4322490e, 0x73f0716b,
+    0x228639c4, 0x125401a1, 0x062e3a86, 0x36fc02e3, 0x678a4a4c, 0x57587229,
+    0xc566db12, 0xf5b4e377, 0xa4c2abd8, 0x941093bd, 0x85538f5f, 0xb581b73a,
+    0xe4f7ff95, 0xd425c7f0, 0x461b6ecb, 0x76c956ae, 0x27bf1e01, 0x176d2664,
+    0x053927c5, 0x35eb1fa0, 0x649d570f, 0x544f6f6a, 0xc671c651, 0xf6a3fe34,
+    0xa7d5b69b, 0x97078efe, 0x8644921c, 0xb696aa79, 0xe7e0e2d6, 0xd732dab3,
+    0x450c7388, 0x75de4bed, 0x24a80342, 0x147a3b27, 0x0c5c750c, 0x3c8e4d69,
+    0x6df805c6, 0x5d2a3da3, 0xcf149498, 0xffc6acfd, 0xaeb0e452, 0x9e62dc37,
+    0x8f21c0d5, 0xbff3f8b0, 0xee85b01f, 0xde57887a, 0x4c692141, 0x7cbb1924,
+    0x2dcd518b, 0x1d1f69ee, 0x0f4b684f, 0x3f99502a, 0x6eef1885, 0x5e3d20e0,
+    0xcc0389db, 0xfcd1b1be, 0xada7f911, 0x9d75c174, 0x8c36dd96, 0xbce4e5f3,
+    0xed92ad5c, 0xdd409539, 0x4f7e3c02, 0x7fac0467, 0x2eda4cc8, 0x1e0874ad,
+    0x0a724f8a, 0x3aa077ef, 0x6bd63f40, 0x5b040725, 0xc93aae1e, 0xf9e8967b,
+    0xa89eded4, 0x984ce6b1, 0x890ffa53, 0xb9ddc236, 0xe8ab8a99, 0xd879b2fc,
+    0x4a471bc7, 0x7a9523a2, 0x2be36b0d, 0x1b315368, 0x096552c9, 0x39b76aac,
+    0x68c12203, 0x58131a66, 0xca2db35d, 0xfaff8b38, 0xab89c397, 0x9b5bfbf2,
+    0x8a18e710, 0xbacadf75, 0xebbc97da, 0xdb6eafbf, 0x49500684, 0x79823ee1,
+    0x28f4764e, 0x18264e2b, 0x18b8ea18, 0x286ad27d, 0x791c9ad2, 0x49cea2b7,
+    0xdbf00b8c, 0xeb2233e9, 0xba547b46, 0x8a864323, 0x9bc55fc1, 0xab1767a4,
+    0xfa612f0b, 0xcab3176e, 0x588dbe55, 0x685f8630, 0x3929ce9f, 0x09fbf6fa,
+    0x1baff75b, 0x2b7dcf3e, 0x7a0b8791, 0x4ad9bff4, 0xd8e716cf, 0xe8352eaa,
+    0xb9436605, 0x89915e60, 0x98d24282, 0xa8007ae7, 0xf9763248, 0xc9a40a2d,
+    0x5b9aa316, 0x6b489b73, 0x3a3ed3dc, 0x0aecebb9, 0x1e96d09e, 0x2e44e8fb,
+    0x7f32a054, 0x4fe09831, 0xddde310a, 0xed0c096f, 0xbc7a41c0, 0x8ca879a5,
+    0x9deb6547, 0xad395d22, 0xfc4f158d, 0xcc9d2de8, 0x5ea384d3, 0x6e71bcb6,
+    0x3f07f419, 0x0fd5cc7c, 0x1d81cddd, 0x2d53f5b8, 0x7c25bd17, 0x4cf78572,
+    0xdec92c49, 0xee1b142c, 0xbf6d5c83, 0x8fbf64e6, 0x9efc7804, 0xae2e4061,
+    0xff5808ce, 0xcf8a30ab, 0x5db49990, 0x6d66a1f5, 0x3c10e95a, 0x0cc2d13f,
+    0x14e49f14, 0x2436a771, 0x7540efde, 0x4592d7bb, 0xd7ac7e80, 0xe77e46e5,
+    0xb6080e4a, 0x86da362f, 0x97992acd, 0xa74b12a8, 0xf63d5a07, 0xc6ef6262,
+    0x54d1cb59, 0x6403f33c, 0x3575bb93, 0x05a783f6, 0x17f38257, 0x2721ba32,
+    0x7657f29d, 0x4685caf8, 0xd4bb63c3, 0xe4695ba6, 0xb51f1309, 0x85cd2b6c,
+    0x948e378e, 0xa45c0feb, 0xf52a4744, 0xc5f87f21, 0x57c6d61a, 0x6714ee7f,
+    0x3662a6d0, 0x06b09eb5, 0x12caa592, 0x22189df7, 0x736ed558, 0x43bced3d,
+    0xd1824406, 0xe1507c63, 0xb02634cc, 0x80f40ca9, 0x91b7104b, 0xa165282e,
+    0xf0136081, 0xc0c158e4, 0x52fff1df, 0x622dc9ba, 0x335b8115, 0x0389b970,
+    0x11ddb8d1, 0x210f80b4, 0x7079c81b, 0x40abf07e, 0xd2955945, 0xe2476120,
+    0xb331298f, 0x83e311ea, 0x92a00d08, 0xa272356d, 0xf3047dc2, 0xc3d645a7,
+    0x51e8ec9c, 0x613ad4f9, 0x304c9c56, 0x009ea433};
+
+const uint32_t kStrideExtensionTable1[256] = {
+    0x00000000, 0x54075546, 0xa80eaa8c, 0xfc09ffca, 0x55f123e9, 0x01f676af,
+    0xfdff8965, 0xa9f8dc23, 0xabe247d2, 0xffe51294, 0x03eced5e, 0x57ebb818,
+    0xfe13643b, 0xaa14317d, 0x561dceb7, 0x021a9bf1, 0x5228f955, 0x062fac13,
+    0xfa2653d9, 0xae21069f, 0x07d9dabc, 0x53de8ffa, 0xafd77030, 0xfbd02576,
+    0xf9cabe87, 0xadcdebc1, 0x51c4140b, 0x05c3414d, 0xac3b9d6e, 0xf83cc828,
+    0x043537e2, 0x503262a4, 0xa451f2aa, 0xf056a7ec, 0x0c5f5826, 0x58580d60,
+    0xf1a0d143, 0xa5a78405, 0x59ae7bcf, 0x0da92e89, 0x0fb3b578, 0x5bb4e03e,
+    0xa7bd1ff4, 0xf3ba4ab2, 0x5a429691, 0x0e45c3d7, 0xf24c3c1d, 0xa64b695b,
+    0xf6790bff, 0xa27e5eb9, 0x5e77a173, 0x0a70f435, 0xa3882816, 0xf78f7d50,
+    0x0b86829a, 0x5f81d7dc, 0x5d9b4c2d, 0x099c196b, 0xf595e6a1, 0xa192b3e7,
+    0x086a6fc4, 0x5c6d3a82, 0xa064c548, 0xf463900e, 0x4d4f93a5, 0x1948c6e3,
+    0xe5413929, 0xb1466c6f, 0x18beb04c, 0x4cb9e50a, 0xb0b01ac0, 0xe4b74f86,
+    0xe6add477, 0xb2aa8131, 0x4ea37efb, 0x1aa42bbd, 0xb35cf79e, 0xe75ba2d8,
+    0x1b525d12, 0x4f550854, 0x1f676af0, 0x4b603fb6, 0xb769c07c, 0xe36e953a,
+    0x4a964919, 0x1e911c5f, 0xe298e395, 0xb69fb6d3, 0xb4852d22, 0xe0827864,
+    0x1c8b87ae, 0x488cd2e8, 0xe1740ecb, 0xb5735b8d, 0x497aa447, 0x1d7df101,
+    0xe91e610f, 0xbd193449, 0x4110cb83, 0x15179ec5, 0xbcef42e6, 0xe8e817a0,
+    0x14e1e86a, 0x40e6bd2c, 0x42fc26dd, 0x16fb739b, 0xeaf28c51, 0xbef5d917,
+    0x170d0534, 0x430a5072, 0xbf03afb8, 0xeb04fafe, 0xbb36985a, 0xef31cd1c,
+    0x133832d6, 0x473f6790, 0xeec7bbb3, 0xbac0eef5, 0x46c9113f, 0x12ce4479,
+    0x10d4df88, 0x44d38ace, 0xb8da7504, 0xecdd2042, 0x4525fc61, 0x1122a927,
+    0xed2b56ed, 0xb92c03ab, 0x9a9f274a, 0xce98720c, 0x32918dc6, 0x6696d880,
+    0xcf6e04a3, 0x9b6951e5, 0x6760ae2f, 0x3367fb69, 0x317d6098, 0x657a35de,
+    0x9973ca14, 0xcd749f52, 0x648c4371, 0x308b1637, 0xcc82e9fd, 0x9885bcbb,
+    0xc8b7de1f, 0x9cb08b59, 0x60b97493, 0x34be21d5, 0x9d46fdf6, 0xc941a8b0,
+    0x3548577a, 0x614f023c, 0x635599cd, 0x3752cc8b, 0xcb5b3341, 0x9f5c6607,
+    0x36a4ba24, 0x62a3ef62, 0x9eaa10a8, 0xcaad45ee, 0x3eced5e0, 0x6ac980a6,
+    0x96c07f6c, 0xc2c72a2a, 0x6b3ff609, 0x3f38a34f, 0xc3315c85, 0x973609c3,
+    0x952c9232, 0xc12bc774, 0x3d2238be, 0x69256df8, 0xc0ddb1db, 0x94dae49d,
+    0x68d31b57, 0x3cd44e11, 0x6ce62cb5, 0x38e179f3, 0xc4e88639, 0x90efd37f,
+    0x39170f5c, 0x6d105a1a, 0x9119a5d0, 0xc51ef096, 0xc7046b67, 0x93033e21,
+    0x6f0ac1eb, 0x3b0d94ad, 0x92f5488e, 0xc6f21dc8, 0x3afbe202, 0x6efcb744,
+    0xd7d0b4ef, 0x83d7e1a9, 0x7fde1e63, 0x2bd94b25, 0x82219706, 0xd626c240,
+    0x2a2f3d8a, 0x7e2868cc, 0x7c32f33d, 0x2835a67b, 0xd43c59b1, 0x803b0cf7,
+    0x29c3d0d4, 0x7dc48592, 0x81cd7a58, 0xd5ca2f1e, 0x85f84dba, 0xd1ff18fc,
+    0x2df6e736, 0x79f1b270, 0xd0096e53, 0x840e3b15, 0x7807c4df, 0x2c009199,
+    0x2e1a0a68, 0x7a1d5f2e, 0x8614a0e4, 0xd213f5a2, 0x7beb2981, 0x2fec7cc7,
+    0xd3e5830d, 0x87e2d64b, 0x73814645, 0x27861303, 0xdb8fecc9, 0x8f88b98f,
+    0x267065ac, 0x727730ea, 0x8e7ecf20, 0xda799a66, 0xd8630197, 0x8c6454d1,
+    0x706dab1b, 0x246afe5d, 0x8d92227e, 0xd9957738, 0x259c88f2, 0x719bddb4,
+    0x21a9bf10, 0x75aeea56, 0x89a7159c, 0xdda040da, 0x74589cf9, 0x205fc9bf,
+    0xdc563675, 0x88516333, 0x8a4bf8c2, 0xde4cad84, 0x2245524e, 0x76420708,
+    0xdfbadb2b, 0x8bbd8e6d, 0x77b471a7, 0x23b324e1};
+
+const uint32_t kStrideExtensionTable2[256] = {
+    0x00000000, 0x678efd01, 0xcf1dfa02, 0xa8930703, 0x9bd782f5, 0xfc597ff4,
+    0x54ca78f7, 0x334485f6, 0x3243731b, 0x55cd8e1a, 0xfd5e8919, 0x9ad07418,
+    0xa994f1ee, 0xce1a0cef, 0x66890bec, 0x0107f6ed, 0x6486e636, 0x03081b37,
+    0xab9b1c34, 0xcc15e135, 0xff5164c3, 0x98df99c2, 0x304c9ec1, 0x57c263c0,
+    0x56c5952d, 0x314b682c, 0x99d86f2f, 0xfe56922e, 0xcd1217d8, 0xaa9cead9,
+    0x020fedda, 0x658110db, 0xc90dcc6c, 0xae83316d, 0x0610366e, 0x619ecb6f,
+    0x52da4e99, 0x3554b398, 0x9dc7b49b, 0xfa49499a, 0xfb4ebf77, 0x9cc04276,
+    0x34534575, 0x53ddb874, 0x60993d82, 0x0717c083, 0xaf84c780, 0xc80a3a81,
+    0xad8b2a5a, 0xca05d75b, 0x6296d058, 0x05182d59, 0x365ca8af, 0x51d255ae,
+    0xf94152ad, 0x9ecfafac, 0x9fc85941, 0xf846a440, 0x50d5a343, 0x375b5e42,
+    0x041fdbb4, 0x639126b5, 0xcb0221b6, 0xac8cdcb7, 0x97f7ee29, 0xf0791328,
+    0x58ea142b, 0x3f64e92a, 0x0c206cdc, 0x6bae91dd, 0xc33d96de, 0xa4b36bdf,
+    0xa5b49d32, 0xc23a6033, 0x6aa96730, 0x0d279a31, 0x3e631fc7, 0x59ede2c6,
+    0xf17ee5c5, 0x96f018c4, 0xf371081f, 0x94fff51e, 0x3c6cf21d, 0x5be20f1c,
+    0x68a68aea, 0x0f2877eb, 0xa7bb70e8, 0xc0358de9, 0xc1327b04, 0xa6bc8605,
+    0x0e2f8106, 0x69a17c07, 0x5ae5f9f1, 0x3d6b04f0, 0x95f803f3, 0xf276fef2,
+    0x5efa2245, 0x3974df44, 0x91e7d847, 0xf6692546, 0xc52da0b0, 0xa2a35db1,
+    0x0a305ab2, 0x6dbea7b3, 0x6cb9515e, 0x0b37ac5f, 0xa3a4ab5c, 0xc42a565d,
+    0xf76ed3ab, 0x90e02eaa, 0x387329a9, 0x5ffdd4a8, 0x3a7cc473, 0x5df23972,
+    0xf5613e71, 0x92efc370, 0xa1ab4686, 0xc625bb87, 0x6eb6bc84, 0x09384185,
+    0x083fb768, 0x6fb14a69, 0xc7224d6a, 0xa0acb06b, 0x93e8359d, 0xf466c89c,
+    0x5cf5cf9f, 0x3b7b329e, 0x2a03aaa3, 0x4d8d57a2, 0xe51e50a1, 0x8290ada0,
+    0xb1d42856, 0xd65ad557, 0x7ec9d254, 0x19472f55, 0x1840d9b8, 0x7fce24b9,
+    0xd75d23ba, 0xb0d3debb, 0x83975b4d, 0xe419a64c, 0x4c8aa14f, 0x2b045c4e,
+    0x4e854c95, 0x290bb194, 0x8198b697, 0xe6164b96, 0xd552ce60, 0xb2dc3361,
+    0x1a4f3462, 0x7dc1c963, 0x7cc63f8e, 0x1b48c28f, 0xb3dbc58c, 0xd455388d,
+    0xe711bd7b, 0x809f407a, 0x280c4779, 0x4f82ba78, 0xe30e66cf, 0x84809bce,
+    0x2c139ccd, 0x4b9d61cc, 0x78d9e43a, 0x1f57193b, 0xb7c41e38, 0xd04ae339,
+    0xd14d15d4, 0xb6c3e8d5, 0x1e50efd6, 0x79de12d7, 0x4a9a9721, 0x2d146a20,
+    0x85876d23, 0xe2099022, 0x878880f9, 0xe0067df8, 0x48957afb, 0x2f1b87fa,
+    0x1c5f020c, 0x7bd1ff0d, 0xd342f80e, 0xb4cc050f, 0xb5cbf3e2, 0xd2450ee3,
+    0x7ad609e0, 0x1d58f4e1, 0x2e1c7117, 0x49928c16, 0xe1018b15, 0x868f7614,
+    0xbdf4448a, 0xda7ab98b, 0x72e9be88, 0x15674389, 0x2623c67f, 0x41ad3b7e,
+    0xe93e3c7d, 0x8eb0c17c, 0x8fb73791, 0xe839ca90, 0x40aacd93, 0x27243092,
+    0x1460b564, 0x73ee4865, 0xdb7d4f66, 0xbcf3b267, 0xd972a2bc, 0xbefc5fbd,
+    0x166f58be, 0x71e1a5bf, 0x42a52049, 0x252bdd48, 0x8db8da4b, 0xea36274a,
+    0xeb31d1a7, 0x8cbf2ca6, 0x242c2ba5, 0x43a2d6a4, 0x70e65352, 0x1768ae53,
+    0xbffba950, 0xd8755451, 0x74f988e6, 0x137775e7, 0xbbe472e4, 0xdc6a8fe5,
+    0xef2e0a13, 0x88a0f712, 0x2033f011, 0x47bd0d10, 0x46bafbfd, 0x213406fc,
+    0x89a701ff, 0xee29fcfe, 0xdd6d7908, 0xbae38409, 0x1270830a, 0x75fe7e0b,
+    0x107f6ed0, 0x77f193d1, 0xdf6294d2, 0xb8ec69d3, 0x8ba8ec25, 0xec261124,
+    0x44b51627, 0x233beb26, 0x223c1dcb, 0x45b2e0ca, 0xed21e7c9, 0x8aaf1ac8,
+    0xb9eb9f3e, 0xde65623f, 0x76f6653c, 0x1178983d};
+
+const uint32_t kStrideExtensionTable3[256] = {
+    0x00000000, 0xf20c0dfe, 0xe1f46d0d, 0x13f860f3, 0xc604aceb, 0x3408a115,
+    0x27f0c1e6, 0xd5fccc18, 0x89e52f27, 0x7be922d9, 0x6811422a, 0x9a1d4fd4,
+    0x4fe183cc, 0xbded8e32, 0xae15eec1, 0x5c19e33f, 0x162628bf, 0xe42a2541,
+    0xf7d245b2, 0x05de484c, 0xd0228454, 0x222e89aa, 0x31d6e959, 0xc3dae4a7,
+    0x9fc30798, 0x6dcf0a66, 0x7e376a95, 0x8c3b676b, 0x59c7ab73, 0xabcba68d,
+    0xb833c67e, 0x4a3fcb80, 0x2c4c517e, 0xde405c80, 0xcdb83c73, 0x3fb4318d,
+    0xea48fd95, 0x1844f06b, 0x0bbc9098, 0xf9b09d66, 0xa5a97e59, 0x57a573a7,
+    0x445d1354, 0xb6511eaa, 0x63add2b2, 0x91a1df4c, 0x8259bfbf, 0x7055b241,
+    0x3a6a79c1, 0xc866743f, 0xdb9e14cc, 0x29921932, 0xfc6ed52a, 0x0e62d8d4,
+    0x1d9ab827, 0xef96b5d9, 0xb38f56e6, 0x41835b18, 0x527b3beb, 0xa0773615,
+    0x758bfa0d, 0x8787f7f3, 0x947f9700, 0x66739afe, 0x5898a2fc, 0xaa94af02,
+    0xb96ccff1, 0x4b60c20f, 0x9e9c0e17, 0x6c9003e9, 0x7f68631a, 0x8d646ee4,
+    0xd17d8ddb, 0x23718025, 0x3089e0d6, 0xc285ed28, 0x17792130, 0xe5752cce,
+    0xf68d4c3d, 0x048141c3, 0x4ebe8a43, 0xbcb287bd, 0xaf4ae74e, 0x5d46eab0,
+    0x88ba26a8, 0x7ab62b56, 0x694e4ba5, 0x9b42465b, 0xc75ba564, 0x3557a89a,
+    0x26afc869, 0xd4a3c597, 0x015f098f, 0xf3530471, 0xe0ab6482, 0x12a7697c,
+    0x74d4f382, 0x86d8fe7c, 0x95209e8f, 0x672c9371, 0xb2d05f69, 0x40dc5297,
+    0x53243264, 0xa1283f9a, 0xfd31dca5, 0x0f3dd15b, 0x1cc5b1a8, 0xeec9bc56,
+    0x3b35704e, 0xc9397db0, 0xdac11d43, 0x28cd10bd, 0x62f2db3d, 0x90fed6c3,
+    0x8306b630, 0x710abbce, 0xa4f677d6, 0x56fa7a28, 0x45021adb, 0xb70e1725,
+    0xeb17f41a, 0x191bf9e4, 0x0ae39917, 0xf8ef94e9, 0x2d1358f1, 0xdf1f550f,
+    0xcce735fc, 0x3eeb3802, 0xb13145f8, 0x433d4806, 0x50c528f5, 0xa2c9250b,
+    0x7735e913, 0x8539e4ed, 0x96c1841e, 0x64cd89e0, 0x38d46adf, 0xcad86721,
+    0xd92007d2, 0x2b2c0a2c, 0xfed0c634, 0x0cdccbca, 0x1f24ab39, 0xed28a6c7,
+    0xa7176d47, 0x551b60b9, 0x46e3004a, 0xb4ef0db4, 0x6113c1ac, 0x931fcc52,
+    0x80e7aca1, 0x72eba15f, 0x2ef24260, 0xdcfe4f9e, 0xcf062f6d, 0x3d0a2293,
+    0xe8f6ee8b, 0x1afae375, 0x09028386, 0xfb0e8e78, 0x9d7d1486, 0x6f711978,
+    0x7c89798b, 0x8e857475, 0x5b79b86d, 0xa975b593, 0xba8dd560, 0x4881d89e,
+    0x14983ba1, 0xe694365f, 0xf56c56ac, 0x07605b52, 0xd29c974a, 0x20909ab4,
+    0x3368fa47, 0xc164f7b9, 0x8b5b3c39, 0x795731c7, 0x6aaf5134, 0x98a35cca,
+    0x4d5f90d2, 0xbf539d2c, 0xacabfddf, 0x5ea7f021, 0x02be131e, 0xf0b21ee0,
+    0xe34a7e13, 0x114673ed, 0xc4babff5, 0x36b6b20b, 0x254ed2f8, 0xd742df06,
+    0xe9a9e704, 0x1ba5eafa, 0x085d8a09, 0xfa5187f7, 0x2fad4bef, 0xdda14611,
+    0xce5926e2, 0x3c552b1c, 0x604cc823, 0x9240c5dd, 0x81b8a52e, 0x73b4a8d0,
+    0xa64864c8, 0x54446936, 0x47bc09c5, 0xb5b0043b, 0xff8fcfbb, 0x0d83c245,
+    0x1e7ba2b6, 0xec77af48, 0x398b6350, 0xcb876eae, 0xd87f0e5d, 0x2a7303a3,
+    0x766ae09c, 0x8466ed62, 0x979e8d91, 0x6592806f, 0xb06e4c77, 0x42624189,
+    0x519a217a, 0xa3962c84, 0xc5e5b67a, 0x37e9bb84, 0x2411db77, 0xd61dd689,
+    0x03e11a91, 0xf1ed176f, 0xe215779c, 0x10197a62, 0x4c00995d, 0xbe0c94a3,
+    0xadf4f450, 0x5ff8f9ae, 0x8a0435b6, 0x78083848, 0x6bf058bb, 0x99fc5545,
+    0xd3c39ec5, 0x21cf933b, 0x3237f3c8, 0xc03bfe36, 0x15c7322e, 0xe7cb3fd0,
+    0xf4335f23, 0x063f52dd, 0x5a26b1e2, 0xa82abc1c, 0xbbd2dcef, 0x49ded111,
+    0x9c221d09, 0x6e2e10f7, 0x7dd67004, 0x8fda7dfa};
+
+// CRCs are pre- and post- conditioned by xoring with all ones.
+static constexpr const uint32_t kCRC32Xor = static_cast<uint32_t>(0xffffffffU);
+
+// Reads a little-endian 32-bit integer from a 32-bit-aligned buffer.
+inline uint32_t ReadUint32LE(const uint8_t* buffer) {
+  return DecodeFixed32(reinterpret_cast<const char*>(buffer));
+}
+
+// Returns the smallest address >= the given address that is aligned to N bytes.
+//
+// N must be a power of two.
+template <int N>
+constexpr inline const uint8_t* RoundUp(const uint8_t* pointer) {
+  return reinterpret_cast<uint8_t*>(
+      (reinterpret_cast<uintptr_t>(pointer) + (N - 1)) &
+      ~static_cast<uintptr_t>(N - 1));
+}
+
+}  // namespace
+
+// Determine if the CPU running this program can accelerate the CRC32C
+// calculation.
+static bool CanAccelerateCRC32C() {
+  // port::AcceleretedCRC32C returns zero when unable to accelerate.
+  static const char kTestCRCBuffer[] = "TestCRCBuffer";
+  static const char kBufSize = sizeof(kTestCRCBuffer) - 1;
+  static const uint32_t kTestCRCValue = 0xdcbc59fa;
+
+  return port::AcceleratedCRC32C(0, kTestCRCBuffer, kBufSize) == kTestCRCValue;
+}
+
+uint32_t Extend(uint32_t crc, const char* data, size_t n) {
+  static bool accelerate = CanAccelerateCRC32C();
+  if (accelerate) {
+    return port::AcceleratedCRC32C(crc, data, n);
+  }
+
+  const uint8_t* p = reinterpret_cast<const uint8_t*>(data);
+  const uint8_t* e = p + n;
+  uint32_t l = crc ^ kCRC32Xor;
+
+// Process one byte at a time.
+#define STEP1                              \
+  do {                                     \
+    int c = (l & 0xff) ^ *p++;             \
+    l = kByteExtensionTable[c] ^ (l >> 8); \
+  } while (0)
+
+// Process one of the 4 strides of 4-byte data.
+#define STEP4(s)                                                               \
+  do {                                                                         \
+    crc##s = ReadUint32LE(p + s * 4) ^ kStrideExtensionTable3[crc##s & 0xff] ^ \
+             kStrideExtensionTable2[(crc##s >> 8) & 0xff] ^                    \
+             kStrideExtensionTable1[(crc##s >> 16) & 0xff] ^                   \
+             kStrideExtensionTable0[crc##s >> 24];                             \
+  } while (0)
+
+// Process a 16-byte swath of 4 strides, each of which has 4 bytes of data.
+#define STEP16 \
+  do {         \
+    STEP4(0);  \
+    STEP4(1);  \
+    STEP4(2);  \
+    STEP4(3);  \
+    p += 16;   \
+  } while (0)
+
+// Process 4 bytes that were already loaded into a word.
+#define STEP4W(w)                                   \
+  do {                                              \
+    w ^= l;                                         \
+    for (size_t i = 0; i < 4; ++i) {                \
+      w = (w >> 8) ^ kByteExtensionTable[w & 0xff]; \
+    }                                               \
+    l = w;                                          \
+  } while (0)
+
+  // Point x at first 4-byte aligned byte in the buffer. This might be past the
+  // end of the buffer.
+  const uint8_t* x = RoundUp<4>(p);
+  if (x <= e) {
+    // Process bytes p is 4-byte aligned.
+    while (p != x) {
+      STEP1;
+    }
+  }
+
+  if ((e - p) >= 16) {
+    // Load a 16-byte swath into the stride partial results.
+    uint32_t crc0 = ReadUint32LE(p + 0 * 4) ^ l;
+    uint32_t crc1 = ReadUint32LE(p + 1 * 4);
+    uint32_t crc2 = ReadUint32LE(p + 2 * 4);
+    uint32_t crc3 = ReadUint32LE(p + 3 * 4);
+    p += 16;
+
+    // It is possible to get better speeds (at least on x86) by interleaving
+    // prefetching 256 bytes ahead with processing 64 bytes at a time. See the
+    // portable implementation in https://github.com/google/crc32c/.
+
+    // Process one 16-byte swath at a time.
+    while ((e - p) >= 16) {
+      STEP16;
+    }
+
+    // Advance one word at a time as far as possible.
+    while ((e - p) >= 4) {
+      STEP4(0);
+      uint32_t tmp = crc0;
+      crc0 = crc1;
+      crc1 = crc2;
+      crc2 = crc3;
+      crc3 = tmp;
+      p += 4;
+    }
+
+    // Combine the 4 partial stride results.
+    l = 0;
+    STEP4W(crc0);
+    STEP4W(crc1);
+    STEP4W(crc2);
+    STEP4W(crc3);
+  }
+
+  // Process the last few bytes.
+  while (p != e) {
+    STEP1;
+  }
+#undef STEP4W
+#undef STEP16
+#undef STEP4
+#undef STEP1
+  return l ^ kCRC32Xor;
+}
+
+}  // namespace crc32c
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/crc32c.h b/ChattingApp 000/Pods/leveldb-library/util/crc32c.h
new file mode 100644
index 0000000..98fabb0
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/crc32c.h	
@@ -0,0 +1,43 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_CRC32C_H_
+#define STORAGE_LEVELDB_UTIL_CRC32C_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace leveldb {
+namespace crc32c {
+
+// Return the crc32c of concat(A, data[0,n-1]) where init_crc is the
+// crc32c of some string A.  Extend() is often used to maintain the
+// crc32c of a stream of data.
+uint32_t Extend(uint32_t init_crc, const char* data, size_t n);
+
+// Return the crc32c of data[0,n-1]
+inline uint32_t Value(const char* data, size_t n) { return Extend(0, data, n); }
+
+static const uint32_t kMaskDelta = 0xa282ead8ul;
+
+// Return a masked representation of crc.
+//
+// Motivation: it is problematic to compute the CRC of a string that
+// contains embedded CRCs.  Therefore we recommend that CRCs stored
+// somewhere (e.g., in files) should be masked before being stored.
+inline uint32_t Mask(uint32_t crc) {
+  // Rotate right by 15 bits and add a constant.
+  return ((crc >> 15) | (crc << 17)) + kMaskDelta;
+}
+
+// Return the crc whose masked representation is masked_crc.
+inline uint32_t Unmask(uint32_t masked_crc) {
+  uint32_t rot = masked_crc - kMaskDelta;
+  return ((rot >> 17) | (rot << 15));
+}
+
+}  // namespace crc32c
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_CRC32C_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/env.cc b/ChattingApp 000/Pods/leveldb-library/util/env.cc
new file mode 100644
index 0000000..6cd5f2e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/env.cc	
@@ -0,0 +1,92 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/env.h"
+
+namespace leveldb {
+
+Env::~Env() {}
+
+Status Env::NewAppendableFile(const std::string& fname, WritableFile** result) {
+  return Status::NotSupported("NewAppendableFile", fname);
+}
+
+SequentialFile::~SequentialFile() {}
+
+RandomAccessFile::~RandomAccessFile() {}
+
+WritableFile::~WritableFile() {}
+
+Logger::~Logger() {}
+
+FileLock::~FileLock() {}
+
+void Log(Logger* info_log, const char* format, ...) {
+  if (info_log != nullptr) {
+    va_list ap;
+    va_start(ap, format);
+    info_log->Logv(format, ap);
+    va_end(ap);
+  }
+}
+
+static Status DoWriteStringToFile(Env* env, const Slice& data,
+                                  const std::string& fname, bool should_sync) {
+  WritableFile* file;
+  Status s = env->NewWritableFile(fname, &file);
+  if (!s.ok()) {
+    return s;
+  }
+  s = file->Append(data);
+  if (s.ok() && should_sync) {
+    s = file->Sync();
+  }
+  if (s.ok()) {
+    s = file->Close();
+  }
+  delete file;  // Will auto-close if we did not close above
+  if (!s.ok()) {
+    env->DeleteFile(fname);
+  }
+  return s;
+}
+
+Status WriteStringToFile(Env* env, const Slice& data,
+                         const std::string& fname) {
+  return DoWriteStringToFile(env, data, fname, false);
+}
+
+Status WriteStringToFileSync(Env* env, const Slice& data,
+                             const std::string& fname) {
+  return DoWriteStringToFile(env, data, fname, true);
+}
+
+Status ReadFileToString(Env* env, const std::string& fname, std::string* data) {
+  data->clear();
+  SequentialFile* file;
+  Status s = env->NewSequentialFile(fname, &file);
+  if (!s.ok()) {
+    return s;
+  }
+  static const int kBufferSize = 8192;
+  char* space = new char[kBufferSize];
+  while (true) {
+    Slice fragment;
+    s = file->Read(kBufferSize, &fragment, space);
+    if (!s.ok()) {
+      break;
+    }
+    data->append(fragment.data(), fragment.size());
+    if (fragment.empty()) {
+      break;
+    }
+  }
+  delete[] space;
+  delete file;
+  return s;
+}
+
+EnvWrapper::~EnvWrapper() {}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/env_posix.cc b/ChattingApp 000/Pods/leveldb-library/util/env_posix.cc
new file mode 100644
index 0000000..8c74f5a
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/env_posix.cc	
@@ -0,0 +1,876 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <sys/mman.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <atomic>
+#include <cerrno>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <limits>
+#include <queue>
+#include <set>
+#include <string>
+#include <thread>
+#include <type_traits>
+#include <utility>
+
+#include "leveldb/env.h"
+#include "leveldb/slice.h"
+#include "leveldb/status.h"
+#include "port/port.h"
+#include "port/thread_annotations.h"
+#include "util/env_posix_test_helper.h"
+#include "util/posix_logger.h"
+
+namespace leveldb {
+
+namespace {
+
+// Set by EnvPosixTestHelper::SetReadOnlyMMapLimit() and MaxOpenFiles().
+int g_open_read_only_file_limit = -1;
+
+// Up to 1000 mmap regions for 64-bit binaries; none for 32-bit.
+constexpr const int kDefaultMmapLimit = (sizeof(void*) >= 8) ? 1000 : 0;
+
+// Can be set using EnvPosixTestHelper::SetReadOnlyMMapLimit.
+int g_mmap_limit = kDefaultMmapLimit;
+
+constexpr const size_t kWritableFileBufferSize = 65536;
+
+Status PosixError(const std::string& context, int error_number) {
+  if (error_number == ENOENT) {
+    return Status::NotFound(context, std::strerror(error_number));
+  } else {
+    return Status::IOError(context, std::strerror(error_number));
+  }
+}
+
+// Helper class to limit resource usage to avoid exhaustion.
+// Currently used to limit read-only file descriptors and mmap file usage
+// so that we do not run out of file descriptors or virtual memory, or run into
+// kernel performance problems for very large databases.
+class Limiter {
+ public:
+  // Limit maximum number of resources to |max_acquires|.
+  Limiter(int max_acquires) : acquires_allowed_(max_acquires) {}
+
+  Limiter(const Limiter&) = delete;
+  Limiter operator=(const Limiter&) = delete;
+
+  // If another resource is available, acquire it and return true.
+  // Else return false.
+  bool Acquire() {
+    int old_acquires_allowed =
+        acquires_allowed_.fetch_sub(1, std::memory_order_relaxed);
+
+    if (old_acquires_allowed > 0) return true;
+
+    acquires_allowed_.fetch_add(1, std::memory_order_relaxed);
+    return false;
+  }
+
+  // Release a resource acquired by a previous call to Acquire() that returned
+  // true.
+  void Release() { acquires_allowed_.fetch_add(1, std::memory_order_relaxed); }
+
+ private:
+  // The number of available resources.
+  //
+  // This is a counter and is not tied to the invariants of any other class, so
+  // it can be operated on safely using std::memory_order_relaxed.
+  std::atomic<int> acquires_allowed_;
+};
+
+// Implements sequential read access in a file using read().
+//
+// Instances of this class are thread-friendly but not thread-safe, as required
+// by the SequentialFile API.
+class PosixSequentialFile final : public SequentialFile {
+ public:
+  PosixSequentialFile(std::string filename, int fd)
+      : fd_(fd), filename_(filename) {}
+  ~PosixSequentialFile() override { close(fd_); }
+
+  Status Read(size_t n, Slice* result, char* scratch) override {
+    Status status;
+    while (true) {
+      ::ssize_t read_size = ::read(fd_, scratch, n);
+      if (read_size < 0) {  // Read error.
+        if (errno == EINTR) {
+          continue;  // Retry
+        }
+        status = PosixError(filename_, errno);
+        break;
+      }
+      *result = Slice(scratch, read_size);
+      break;
+    }
+    return status;
+  }
+
+  Status Skip(uint64_t n) override {
+    if (::lseek(fd_, n, SEEK_CUR) == static_cast<off_t>(-1)) {
+      return PosixError(filename_, errno);
+    }
+    return Status::OK();
+  }
+
+ private:
+  const int fd_;
+  const std::string filename_;
+};
+
+// Implements random read access in a file using pread().
+//
+// Instances of this class are thread-safe, as required by the RandomAccessFile
+// API. Instances are immutable and Read() only calls thread-safe library
+// functions.
+class PosixRandomAccessFile final : public RandomAccessFile {
+ public:
+  // The new instance takes ownership of |fd|. |fd_limiter| must outlive this
+  // instance, and will be used to determine if .
+  PosixRandomAccessFile(std::string filename, int fd, Limiter* fd_limiter)
+      : has_permanent_fd_(fd_limiter->Acquire()),
+        fd_(has_permanent_fd_ ? fd : -1),
+        fd_limiter_(fd_limiter),
+        filename_(std::move(filename)) {
+    if (!has_permanent_fd_) {
+      assert(fd_ == -1);
+      ::close(fd);  // The file will be opened on every read.
+    }
+  }
+
+  ~PosixRandomAccessFile() override {
+    if (has_permanent_fd_) {
+      assert(fd_ != -1);
+      ::close(fd_);
+      fd_limiter_->Release();
+    }
+  }
+
+  Status Read(uint64_t offset, size_t n, Slice* result,
+              char* scratch) const override {
+    int fd = fd_;
+    if (!has_permanent_fd_) {
+      fd = ::open(filename_.c_str(), O_RDONLY);
+      if (fd < 0) {
+        return PosixError(filename_, errno);
+      }
+    }
+
+    assert(fd != -1);
+
+    Status status;
+    ssize_t read_size = ::pread(fd, scratch, n, static_cast<off_t>(offset));
+    *result = Slice(scratch, (read_size < 0) ? 0 : read_size);
+    if (read_size < 0) {
+      // An error: return a non-ok status.
+      status = PosixError(filename_, errno);
+    }
+    if (!has_permanent_fd_) {
+      // Close the temporary file descriptor opened earlier.
+      assert(fd != fd_);
+      ::close(fd);
+    }
+    return status;
+  }
+
+ private:
+  const bool has_permanent_fd_;  // If false, the file is opened on every read.
+  const int fd_;                 // -1 if has_permanent_fd_ is false.
+  Limiter* const fd_limiter_;
+  const std::string filename_;
+};
+
+// Implements random read access in a file using mmap().
+//
+// Instances of this class are thread-safe, as required by the RandomAccessFile
+// API. Instances are immutable and Read() only calls thread-safe library
+// functions.
+class PosixMmapReadableFile final : public RandomAccessFile {
+ public:
+  // mmap_base[0, length-1] points to the memory-mapped contents of the file. It
+  // must be the result of a successful call to mmap(). This instances takes
+  // over the ownership of the region.
+  //
+  // |mmap_limiter| must outlive this instance. The caller must have already
+  // aquired the right to use one mmap region, which will be released when this
+  // instance is destroyed.
+  PosixMmapReadableFile(std::string filename, char* mmap_base, size_t length,
+                        Limiter* mmap_limiter)
+      : mmap_base_(mmap_base),
+        length_(length),
+        mmap_limiter_(mmap_limiter),
+        filename_(std::move(filename)) {}
+
+  ~PosixMmapReadableFile() override {
+    ::munmap(static_cast<void*>(mmap_base_), length_);
+    mmap_limiter_->Release();
+  }
+
+  Status Read(uint64_t offset, size_t n, Slice* result,
+              char* scratch) const override {
+    if (offset + n > length_) {
+      *result = Slice();
+      return PosixError(filename_, EINVAL);
+    }
+
+    *result = Slice(mmap_base_ + offset, n);
+    return Status::OK();
+  }
+
+ private:
+  char* const mmap_base_;
+  const size_t length_;
+  Limiter* const mmap_limiter_;
+  const std::string filename_;
+};
+
+class PosixWritableFile final : public WritableFile {
+ public:
+  PosixWritableFile(std::string filename, int fd)
+      : pos_(0),
+        fd_(fd),
+        is_manifest_(IsManifest(filename)),
+        filename_(std::move(filename)),
+        dirname_(Dirname(filename_)) {}
+
+  ~PosixWritableFile() override {
+    if (fd_ >= 0) {
+      // Ignoring any potential errors
+      Close();
+    }
+  }
+
+  Status Append(const Slice& data) override {
+    size_t write_size = data.size();
+    const char* write_data = data.data();
+
+    // Fit as much as possible into buffer.
+    size_t copy_size = std::min(write_size, kWritableFileBufferSize - pos_);
+    std::memcpy(buf_ + pos_, write_data, copy_size);
+    write_data += copy_size;
+    write_size -= copy_size;
+    pos_ += copy_size;
+    if (write_size == 0) {
+      return Status::OK();
+    }
+
+    // Can't fit in buffer, so need to do at least one write.
+    Status status = FlushBuffer();
+    if (!status.ok()) {
+      return status;
+    }
+
+    // Small writes go to buffer, large writes are written directly.
+    if (write_size < kWritableFileBufferSize) {
+      std::memcpy(buf_, write_data, write_size);
+      pos_ = write_size;
+      return Status::OK();
+    }
+    return WriteUnbuffered(write_data, write_size);
+  }
+
+  Status Close() override {
+    Status status = FlushBuffer();
+    const int close_result = ::close(fd_);
+    if (close_result < 0 && status.ok()) {
+      status = PosixError(filename_, errno);
+    }
+    fd_ = -1;
+    return status;
+  }
+
+  Status Flush() override { return FlushBuffer(); }
+
+  Status Sync() override {
+    // Ensure new files referred to by the manifest are in the filesystem.
+    //
+    // This needs to happen before the manifest file is flushed to disk, to
+    // avoid crashing in a state where the manifest refers to files that are not
+    // yet on disk.
+    Status status = SyncDirIfManifest();
+    if (!status.ok()) {
+      return status;
+    }
+
+    status = FlushBuffer();
+    if (!status.ok()) {
+      return status;
+    }
+
+    return SyncFd(fd_, filename_);
+  }
+
+ private:
+  Status FlushBuffer() {
+    Status status = WriteUnbuffered(buf_, pos_);
+    pos_ = 0;
+    return status;
+  }
+
+  Status WriteUnbuffered(const char* data, size_t size) {
+    while (size > 0) {
+      ssize_t write_result = ::write(fd_, data, size);
+      if (write_result < 0) {
+        if (errno == EINTR) {
+          continue;  // Retry
+        }
+        return PosixError(filename_, errno);
+      }
+      data += write_result;
+      size -= write_result;
+    }
+    return Status::OK();
+  }
+
+  Status SyncDirIfManifest() {
+    Status status;
+    if (!is_manifest_) {
+      return status;
+    }
+
+    int fd = ::open(dirname_.c_str(), O_RDONLY);
+    if (fd < 0) {
+      status = PosixError(dirname_, errno);
+    } else {
+      status = SyncFd(fd, dirname_);
+      ::close(fd);
+    }
+    return status;
+  }
+
+  // Ensures that all the caches associated with the given file descriptor's
+  // data are flushed all the way to durable media, and can withstand power
+  // failures.
+  //
+  // The path argument is only used to populate the description string in the
+  // returned Status if an error occurs.
+  static Status SyncFd(int fd, const std::string& fd_path) {
+#if HAVE_FULLFSYNC
+    // On macOS and iOS, fsync() doesn't guarantee durability past power
+    // failures. fcntl(F_FULLFSYNC) is required for that purpose. Some
+    // filesystems don't support fcntl(F_FULLFSYNC), and require a fallback to
+    // fsync().
+    if (::fcntl(fd, F_FULLFSYNC) == 0) {
+      return Status::OK();
+    }
+#endif  // HAVE_FULLFSYNC
+
+#if HAVE_FDATASYNC
+    bool sync_success = ::fdatasync(fd) == 0;
+#else
+    bool sync_success = ::fsync(fd) == 0;
+#endif  // HAVE_FDATASYNC
+
+    if (sync_success) {
+      return Status::OK();
+    }
+    return PosixError(fd_path, errno);
+  }
+
+  // Returns the directory name in a path pointing to a file.
+  //
+  // Returns "." if the path does not contain any directory separator.
+  static std::string Dirname(const std::string& filename) {
+    std::string::size_type separator_pos = filename.rfind('/');
+    if (separator_pos == std::string::npos) {
+      return std::string(".");
+    }
+    // The filename component should not contain a path separator. If it does,
+    // the splitting was done incorrectly.
+    assert(filename.find('/', separator_pos + 1) == std::string::npos);
+
+    return filename.substr(0, separator_pos);
+  }
+
+  // Extracts the file name from a path pointing to a file.
+  //
+  // The returned Slice points to |filename|'s data buffer, so it is only valid
+  // while |filename| is alive and unchanged.
+  static Slice Basename(const std::string& filename) {
+    std::string::size_type separator_pos = filename.rfind('/');
+    if (separator_pos == std::string::npos) {
+      return Slice(filename);
+    }
+    // The filename component should not contain a path separator. If it does,
+    // the splitting was done incorrectly.
+    assert(filename.find('/', separator_pos + 1) == std::string::npos);
+
+    return Slice(filename.data() + separator_pos + 1,
+                 filename.length() - separator_pos - 1);
+  }
+
+  // True if the given file is a manifest file.
+  static bool IsManifest(const std::string& filename) {
+    return Basename(filename).starts_with("MANIFEST");
+  }
+
+  // buf_[0, pos_ - 1] contains data to be written to fd_.
+  char buf_[kWritableFileBufferSize];
+  size_t pos_;
+  int fd_;
+
+  const bool is_manifest_;  // True if the file's name starts with MANIFEST.
+  const std::string filename_;
+  const std::string dirname_;  // The directory of filename_.
+};
+
+int LockOrUnlock(int fd, bool lock) {
+  errno = 0;
+  struct ::flock file_lock_info;
+  std::memset(&file_lock_info, 0, sizeof(file_lock_info));
+  file_lock_info.l_type = (lock ? F_WRLCK : F_UNLCK);
+  file_lock_info.l_whence = SEEK_SET;
+  file_lock_info.l_start = 0;
+  file_lock_info.l_len = 0;  // Lock/unlock entire file.
+  return ::fcntl(fd, F_SETLK, &file_lock_info);
+}
+
+// Instances are thread-safe because they are immutable.
+class PosixFileLock : public FileLock {
+ public:
+  PosixFileLock(int fd, std::string filename)
+      : fd_(fd), filename_(std::move(filename)) {}
+
+  int fd() const { return fd_; }
+  const std::string& filename() const { return filename_; }
+
+ private:
+  const int fd_;
+  const std::string filename_;
+};
+
+// Tracks the files locked by PosixEnv::LockFile().
+//
+// We maintain a separate set instead of relying on fcntrl(F_SETLK) because
+// fcntl(F_SETLK) does not provide any protection against multiple uses from the
+// same process.
+//
+// Instances are thread-safe because all member data is guarded by a mutex.
+class PosixLockTable {
+ public:
+  bool Insert(const std::string& fname) LOCKS_EXCLUDED(mu_) {
+    mu_.Lock();
+    bool succeeded = locked_files_.insert(fname).second;
+    mu_.Unlock();
+    return succeeded;
+  }
+  void Remove(const std::string& fname) LOCKS_EXCLUDED(mu_) {
+    mu_.Lock();
+    locked_files_.erase(fname);
+    mu_.Unlock();
+  }
+
+ private:
+  port::Mutex mu_;
+  std::set<std::string> locked_files_ GUARDED_BY(mu_);
+};
+
+class PosixEnv : public Env {
+ public:
+  PosixEnv();
+  ~PosixEnv() override {
+    static char msg[] = "PosixEnv singleton destroyed. Unsupported behavior!\n";
+    std::fwrite(msg, 1, sizeof(msg), stderr);
+    std::abort();
+  }
+
+  Status NewSequentialFile(const std::string& filename,
+                           SequentialFile** result) override {
+    int fd = ::open(filename.c_str(), O_RDONLY);
+    if (fd < 0) {
+      *result = nullptr;
+      return PosixError(filename, errno);
+    }
+
+    *result = new PosixSequentialFile(filename, fd);
+    return Status::OK();
+  }
+
+  Status NewRandomAccessFile(const std::string& filename,
+                             RandomAccessFile** result) override {
+    *result = nullptr;
+    int fd = ::open(filename.c_str(), O_RDONLY);
+    if (fd < 0) {
+      return PosixError(filename, errno);
+    }
+
+    if (!mmap_limiter_.Acquire()) {
+      *result = new PosixRandomAccessFile(filename, fd, &fd_limiter_);
+      return Status::OK();
+    }
+
+    uint64_t file_size;
+    Status status = GetFileSize(filename, &file_size);
+    if (status.ok()) {
+      void* mmap_base =
+          ::mmap(/*addr=*/nullptr, file_size, PROT_READ, MAP_SHARED, fd, 0);
+      if (mmap_base != MAP_FAILED) {
+        *result = new PosixMmapReadableFile(filename,
+                                            reinterpret_cast<char*>(mmap_base),
+                                            file_size, &mmap_limiter_);
+      } else {
+        status = PosixError(filename, errno);
+      }
+    }
+    ::close(fd);
+    if (!status.ok()) {
+      mmap_limiter_.Release();
+    }
+    return status;
+  }
+
+  Status NewWritableFile(const std::string& filename,
+                         WritableFile** result) override {
+    int fd = ::open(filename.c_str(), O_TRUNC | O_WRONLY | O_CREAT, 0644);
+    if (fd < 0) {
+      *result = nullptr;
+      return PosixError(filename, errno);
+    }
+
+    *result = new PosixWritableFile(filename, fd);
+    return Status::OK();
+  }
+
+  Status NewAppendableFile(const std::string& filename,
+                           WritableFile** result) override {
+    int fd = ::open(filename.c_str(), O_APPEND | O_WRONLY | O_CREAT, 0644);
+    if (fd < 0) {
+      *result = nullptr;
+      return PosixError(filename, errno);
+    }
+
+    *result = new PosixWritableFile(filename, fd);
+    return Status::OK();
+  }
+
+  bool FileExists(const std::string& filename) override {
+    return ::access(filename.c_str(), F_OK) == 0;
+  }
+
+  Status GetChildren(const std::string& directory_path,
+                     std::vector<std::string>* result) override {
+    result->clear();
+    ::DIR* dir = ::opendir(directory_path.c_str());
+    if (dir == nullptr) {
+      return PosixError(directory_path, errno);
+    }
+    struct ::dirent* entry;
+    while ((entry = ::readdir(dir)) != nullptr) {
+      result->emplace_back(entry->d_name);
+    }
+    ::closedir(dir);
+    return Status::OK();
+  }
+
+  Status DeleteFile(const std::string& filename) override {
+    if (::unlink(filename.c_str()) != 0) {
+      return PosixError(filename, errno);
+    }
+    return Status::OK();
+  }
+
+  Status CreateDir(const std::string& dirname) override {
+    if (::mkdir(dirname.c_str(), 0755) != 0) {
+      return PosixError(dirname, errno);
+    }
+    return Status::OK();
+  }
+
+  Status DeleteDir(const std::string& dirname) override {
+    if (::rmdir(dirname.c_str()) != 0) {
+      return PosixError(dirname, errno);
+    }
+    return Status::OK();
+  }
+
+  Status GetFileSize(const std::string& filename, uint64_t* size) override {
+    struct ::stat file_stat;
+    if (::stat(filename.c_str(), &file_stat) != 0) {
+      *size = 0;
+      return PosixError(filename, errno);
+    }
+    *size = file_stat.st_size;
+    return Status::OK();
+  }
+
+  Status RenameFile(const std::string& from, const std::string& to) override {
+    if (std::rename(from.c_str(), to.c_str()) != 0) {
+      return PosixError(from, errno);
+    }
+    return Status::OK();
+  }
+
+  Status LockFile(const std::string& filename, FileLock** lock) override {
+    *lock = nullptr;
+
+    int fd = ::open(filename.c_str(), O_RDWR | O_CREAT, 0644);
+    if (fd < 0) {
+      return PosixError(filename, errno);
+    }
+
+    if (!locks_.Insert(filename)) {
+      ::close(fd);
+      return Status::IOError("lock " + filename, "already held by process");
+    }
+
+    if (LockOrUnlock(fd, true) == -1) {
+      int lock_errno = errno;
+      ::close(fd);
+      locks_.Remove(filename);
+      return PosixError("lock " + filename, lock_errno);
+    }
+
+    *lock = new PosixFileLock(fd, filename);
+    return Status::OK();
+  }
+
+  Status UnlockFile(FileLock* lock) override {
+    PosixFileLock* posix_file_lock = static_cast<PosixFileLock*>(lock);
+    if (LockOrUnlock(posix_file_lock->fd(), false) == -1) {
+      return PosixError("unlock " + posix_file_lock->filename(), errno);
+    }
+    locks_.Remove(posix_file_lock->filename());
+    ::close(posix_file_lock->fd());
+    delete posix_file_lock;
+    return Status::OK();
+  }
+
+  void Schedule(void (*background_work_function)(void* background_work_arg),
+                void* background_work_arg) override;
+
+  void StartThread(void (*thread_main)(void* thread_main_arg),
+                   void* thread_main_arg) override;
+
+  Status GetTestDirectory(std::string* result) override {
+    const char* env = std::getenv("TEST_TMPDIR");
+    if (env && env[0] != '\0') {
+      *result = env;
+    } else {
+      char buf[100];
+      std::snprintf(buf, sizeof(buf), "/tmp/leveldbtest-%d",
+                    static_cast<int>(::geteuid()));
+      *result = buf;
+    }
+
+    // The CreateDir status is ignored because the directory may already exist.
+    CreateDir(*result);
+
+    return Status::OK();
+  }
+
+  Status NewLogger(const std::string& filename, Logger** result) override {
+    std::FILE* fp = std::fopen(filename.c_str(), "w");
+    if (fp == nullptr) {
+      *result = nullptr;
+      return PosixError(filename, errno);
+    } else {
+      *result = new PosixLogger(fp);
+      return Status::OK();
+    }
+  }
+
+  uint64_t NowMicros() override {
+    static constexpr uint64_t kUsecondsPerSecond = 1000000;
+    struct ::timeval tv;
+    ::gettimeofday(&tv, nullptr);
+    return static_cast<uint64_t>(tv.tv_sec) * kUsecondsPerSecond + tv.tv_usec;
+  }
+
+  void SleepForMicroseconds(int micros) override { ::usleep(micros); }
+
+ private:
+  void BackgroundThreadMain();
+
+  static void BackgroundThreadEntryPoint(PosixEnv* env) {
+    env->BackgroundThreadMain();
+  }
+
+  // Stores the work item data in a Schedule() call.
+  //
+  // Instances are constructed on the thread calling Schedule() and used on the
+  // background thread.
+  //
+  // This structure is thread-safe beacuse it is immutable.
+  struct BackgroundWorkItem {
+    explicit BackgroundWorkItem(void (*function)(void* arg), void* arg)
+        : function(function), arg(arg) {}
+
+    void (*const function)(void*);
+    void* const arg;
+  };
+
+  port::Mutex background_work_mutex_;
+  port::CondVar background_work_cv_ GUARDED_BY(background_work_mutex_);
+  bool started_background_thread_ GUARDED_BY(background_work_mutex_);
+
+  std::queue<BackgroundWorkItem> background_work_queue_
+      GUARDED_BY(background_work_mutex_);
+
+  PosixLockTable locks_;  // Thread-safe.
+  Limiter mmap_limiter_;  // Thread-safe.
+  Limiter fd_limiter_;    // Thread-safe.
+};
+
+// Return the maximum number of concurrent mmaps.
+int MaxMmaps() { return g_mmap_limit; }
+
+// Return the maximum number of read-only files to keep open.
+int MaxOpenFiles() {
+  if (g_open_read_only_file_limit >= 0) {
+    return g_open_read_only_file_limit;
+  }
+  struct ::rlimit rlim;
+  if (::getrlimit(RLIMIT_NOFILE, &rlim)) {
+    // getrlimit failed, fallback to hard-coded default.
+    g_open_read_only_file_limit = 50;
+  } else if (rlim.rlim_cur == RLIM_INFINITY) {
+    g_open_read_only_file_limit = std::numeric_limits<int>::max();
+  } else {
+    // Allow use of 20% of available file descriptors for read-only files.
+    g_open_read_only_file_limit = rlim.rlim_cur / 5;
+  }
+  return g_open_read_only_file_limit;
+}
+
+}  // namespace
+
+PosixEnv::PosixEnv()
+    : background_work_cv_(&background_work_mutex_),
+      started_background_thread_(false),
+      mmap_limiter_(MaxMmaps()),
+      fd_limiter_(MaxOpenFiles()) {}
+
+void PosixEnv::Schedule(
+    void (*background_work_function)(void* background_work_arg),
+    void* background_work_arg) {
+  background_work_mutex_.Lock();
+
+  // Start the background thread, if we haven't done so already.
+  if (!started_background_thread_) {
+    started_background_thread_ = true;
+    std::thread background_thread(PosixEnv::BackgroundThreadEntryPoint, this);
+    background_thread.detach();
+  }
+
+  // If the queue is empty, the background thread may be waiting for work.
+  if (background_work_queue_.empty()) {
+    background_work_cv_.Signal();
+  }
+
+  background_work_queue_.emplace(background_work_function, background_work_arg);
+  background_work_mutex_.Unlock();
+}
+
+void PosixEnv::BackgroundThreadMain() {
+  while (true) {
+    background_work_mutex_.Lock();
+
+    // Wait until there is work to be done.
+    while (background_work_queue_.empty()) {
+      background_work_cv_.Wait();
+    }
+
+    assert(!background_work_queue_.empty());
+    auto background_work_function = background_work_queue_.front().function;
+    void* background_work_arg = background_work_queue_.front().arg;
+    background_work_queue_.pop();
+
+    background_work_mutex_.Unlock();
+    background_work_function(background_work_arg);
+  }
+}
+
+namespace {
+
+// Wraps an Env instance whose destructor is never created.
+//
+// Intended usage:
+//   using PlatformSingletonEnv = SingletonEnv<PlatformEnv>;
+//   void ConfigurePosixEnv(int param) {
+//     PlatformSingletonEnv::AssertEnvNotInitialized();
+//     // set global configuration flags.
+//   }
+//   Env* Env::Default() {
+//     static PlatformSingletonEnv default_env;
+//     return default_env.env();
+//   }
+template <typename EnvType>
+class SingletonEnv {
+ public:
+  SingletonEnv() {
+#if !defined(NDEBUG)
+    env_initialized_.store(true, std::memory_order::memory_order_relaxed);
+#endif  // !defined(NDEBUG)
+    static_assert(sizeof(env_storage_) >= sizeof(EnvType),
+                  "env_storage_ will not fit the Env");
+    static_assert(alignof(decltype(env_storage_)) >= alignof(EnvType),
+                  "env_storage_ does not meet the Env's alignment needs");
+    new (&env_storage_) EnvType();
+  }
+  ~SingletonEnv() = default;
+
+  SingletonEnv(const SingletonEnv&) = delete;
+  SingletonEnv& operator=(const SingletonEnv&) = delete;
+
+  Env* env() { return reinterpret_cast<Env*>(&env_storage_); }
+
+  static void AssertEnvNotInitialized() {
+#if !defined(NDEBUG)
+    assert(!env_initialized_.load(std::memory_order::memory_order_relaxed));
+#endif  // !defined(NDEBUG)
+  }
+
+ private:
+  typename std::aligned_storage<sizeof(EnvType), alignof(EnvType)>::type
+      env_storage_;
+#if !defined(NDEBUG)
+  static std::atomic<bool> env_initialized_;
+#endif  // !defined(NDEBUG)
+};
+
+#if !defined(NDEBUG)
+template <typename EnvType>
+std::atomic<bool> SingletonEnv<EnvType>::env_initialized_;
+#endif  // !defined(NDEBUG)
+
+using PosixDefaultEnv = SingletonEnv<PosixEnv>;
+
+}  // namespace
+
+void PosixEnv::StartThread(void (*thread_main)(void* thread_main_arg),
+                           void* thread_main_arg) {
+  std::thread new_thread(thread_main, thread_main_arg);
+  new_thread.detach();
+}
+
+void EnvPosixTestHelper::SetReadOnlyFDLimit(int limit) {
+  PosixDefaultEnv::AssertEnvNotInitialized();
+  g_open_read_only_file_limit = limit;
+}
+
+void EnvPosixTestHelper::SetReadOnlyMMapLimit(int limit) {
+  PosixDefaultEnv::AssertEnvNotInitialized();
+  g_mmap_limit = limit;
+}
+
+Env* Env::Default() {
+  static PosixDefaultEnv env_container;
+  return env_container.env();
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/env_posix_test_helper.h b/ChattingApp 000/Pods/leveldb-library/util/env_posix_test_helper.h
new file mode 100644
index 0000000..0386960
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/env_posix_test_helper.h	
@@ -0,0 +1,28 @@
+// Copyright 2017 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_ENV_POSIX_TEST_HELPER_H_
+#define STORAGE_LEVELDB_UTIL_ENV_POSIX_TEST_HELPER_H_
+
+namespace leveldb {
+
+class EnvPosixTest;
+
+// A helper for the POSIX Env to facilitate testing.
+class EnvPosixTestHelper {
+ private:
+  friend class EnvPosixTest;
+
+  // Set the maximum number of read-only files that will be opened.
+  // Must be called before creating an Env.
+  static void SetReadOnlyFDLimit(int limit);
+
+  // Set the maximum number of read-only files that will be mapped via mmap.
+  // Must be called before creating an Env.
+  static void SetReadOnlyMMapLimit(int limit);
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_ENV_POSIX_TEST_HELPER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/env_windows_test_helper.h b/ChattingApp 000/Pods/leveldb-library/util/env_windows_test_helper.h
new file mode 100644
index 0000000..e6f6020
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/env_windows_test_helper.h	
@@ -0,0 +1,25 @@
+// Copyright 2018 (c) The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_ENV_WINDOWS_TEST_HELPER_H_
+#define STORAGE_LEVELDB_UTIL_ENV_WINDOWS_TEST_HELPER_H_
+
+namespace leveldb {
+
+class EnvWindowsTest;
+
+// A helper for the Windows Env to facilitate testing.
+class EnvWindowsTestHelper {
+ private:
+  friend class CorruptionTest;
+  friend class EnvWindowsTest;
+
+  // Set the maximum number of read-only files that will be mapped via mmap.
+  // Must be called before creating an Env.
+  static void SetReadOnlyMMapLimit(int limit);
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_ENV_WINDOWS_TEST_HELPER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/filter_policy.cc b/ChattingApp 000/Pods/leveldb-library/util/filter_policy.cc
new file mode 100644
index 0000000..90fd754
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/filter_policy.cc	
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/filter_policy.h"
+
+namespace leveldb {
+
+FilterPolicy::~FilterPolicy() {}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/hash.cc b/ChattingApp 000/Pods/leveldb-library/util/hash.cc
new file mode 100644
index 0000000..67dc134
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/hash.cc	
@@ -0,0 +1,55 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/hash.h"
+
+#include <string.h>
+
+#include "util/coding.h"
+
+// The FALLTHROUGH_INTENDED macro can be used to annotate implicit fall-through
+// between switch labels. The real definition should be provided externally.
+// This one is a fallback version for unsupported compilers.
+#ifndef FALLTHROUGH_INTENDED
+#define FALLTHROUGH_INTENDED \
+  do {                       \
+  } while (0)
+#endif
+
+namespace leveldb {
+
+uint32_t Hash(const char* data, size_t n, uint32_t seed) {
+  // Similar to murmur hash
+  const uint32_t m = 0xc6a4a793;
+  const uint32_t r = 24;
+  const char* limit = data + n;
+  uint32_t h = seed ^ (n * m);
+
+  // Pick up four bytes at a time
+  while (data + 4 <= limit) {
+    uint32_t w = DecodeFixed32(data);
+    data += 4;
+    h += w;
+    h *= m;
+    h ^= (h >> 16);
+  }
+
+  // Pick up remaining bytes
+  switch (limit - data) {
+    case 3:
+      h += static_cast<unsigned char>(data[2]) << 16;
+      FALLTHROUGH_INTENDED;
+    case 2:
+      h += static_cast<unsigned char>(data[1]) << 8;
+      FALLTHROUGH_INTENDED;
+    case 1:
+      h += static_cast<unsigned char>(data[0]);
+      h *= m;
+      h ^= (h >> r);
+      break;
+  }
+  return h;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/hash.h b/ChattingApp 000/Pods/leveldb-library/util/hash.h
new file mode 100644
index 0000000..74bdb6e
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/hash.h	
@@ -0,0 +1,19 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Simple hash function used for internal data structures
+
+#ifndef STORAGE_LEVELDB_UTIL_HASH_H_
+#define STORAGE_LEVELDB_UTIL_HASH_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace leveldb {
+
+uint32_t Hash(const char* data, size_t n, uint32_t seed);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_HASH_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/histogram.cc b/ChattingApp 000/Pods/leveldb-library/util/histogram.cc
new file mode 100644
index 0000000..65092c8
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/histogram.cc	
@@ -0,0 +1,272 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/histogram.h"
+
+#include <math.h>
+#include <stdio.h>
+
+#include "port/port.h"
+
+namespace leveldb {
+
+const double Histogram::kBucketLimit[kNumBuckets] = {
+    1,
+    2,
+    3,
+    4,
+    5,
+    6,
+    7,
+    8,
+    9,
+    10,
+    12,
+    14,
+    16,
+    18,
+    20,
+    25,
+    30,
+    35,
+    40,
+    45,
+    50,
+    60,
+    70,
+    80,
+    90,
+    100,
+    120,
+    140,
+    160,
+    180,
+    200,
+    250,
+    300,
+    350,
+    400,
+    450,
+    500,
+    600,
+    700,
+    800,
+    900,
+    1000,
+    1200,
+    1400,
+    1600,
+    1800,
+    2000,
+    2500,
+    3000,
+    3500,
+    4000,
+    4500,
+    5000,
+    6000,
+    7000,
+    8000,
+    9000,
+    10000,
+    12000,
+    14000,
+    16000,
+    18000,
+    20000,
+    25000,
+    30000,
+    35000,
+    40000,
+    45000,
+    50000,
+    60000,
+    70000,
+    80000,
+    90000,
+    100000,
+    120000,
+    140000,
+    160000,
+    180000,
+    200000,
+    250000,
+    300000,
+    350000,
+    400000,
+    450000,
+    500000,
+    600000,
+    700000,
+    800000,
+    900000,
+    1000000,
+    1200000,
+    1400000,
+    1600000,
+    1800000,
+    2000000,
+    2500000,
+    3000000,
+    3500000,
+    4000000,
+    4500000,
+    5000000,
+    6000000,
+    7000000,
+    8000000,
+    9000000,
+    10000000,
+    12000000,
+    14000000,
+    16000000,
+    18000000,
+    20000000,
+    25000000,
+    30000000,
+    35000000,
+    40000000,
+    45000000,
+    50000000,
+    60000000,
+    70000000,
+    80000000,
+    90000000,
+    100000000,
+    120000000,
+    140000000,
+    160000000,
+    180000000,
+    200000000,
+    250000000,
+    300000000,
+    350000000,
+    400000000,
+    450000000,
+    500000000,
+    600000000,
+    700000000,
+    800000000,
+    900000000,
+    1000000000,
+    1200000000,
+    1400000000,
+    1600000000,
+    1800000000,
+    2000000000,
+    2500000000.0,
+    3000000000.0,
+    3500000000.0,
+    4000000000.0,
+    4500000000.0,
+    5000000000.0,
+    6000000000.0,
+    7000000000.0,
+    8000000000.0,
+    9000000000.0,
+    1e200,
+};
+
+void Histogram::Clear() {
+  min_ = kBucketLimit[kNumBuckets - 1];
+  max_ = 0;
+  num_ = 0;
+  sum_ = 0;
+  sum_squares_ = 0;
+  for (int i = 0; i < kNumBuckets; i++) {
+    buckets_[i] = 0;
+  }
+}
+
+void Histogram::Add(double value) {
+  // Linear search is fast enough for our usage in db_bench
+  int b = 0;
+  while (b < kNumBuckets - 1 && kBucketLimit[b] <= value) {
+    b++;
+  }
+  buckets_[b] += 1.0;
+  if (min_ > value) min_ = value;
+  if (max_ < value) max_ = value;
+  num_++;
+  sum_ += value;
+  sum_squares_ += (value * value);
+}
+
+void Histogram::Merge(const Histogram& other) {
+  if (other.min_ < min_) min_ = other.min_;
+  if (other.max_ > max_) max_ = other.max_;
+  num_ += other.num_;
+  sum_ += other.sum_;
+  sum_squares_ += other.sum_squares_;
+  for (int b = 0; b < kNumBuckets; b++) {
+    buckets_[b] += other.buckets_[b];
+  }
+}
+
+double Histogram::Median() const { return Percentile(50.0); }
+
+double Histogram::Percentile(double p) const {
+  double threshold = num_ * (p / 100.0);
+  double sum = 0;
+  for (int b = 0; b < kNumBuckets; b++) {
+    sum += buckets_[b];
+    if (sum >= threshold) {
+      // Scale linearly within this bucket
+      double left_point = (b == 0) ? 0 : kBucketLimit[b - 1];
+      double right_point = kBucketLimit[b];
+      double left_sum = sum - buckets_[b];
+      double right_sum = sum;
+      double pos = (threshold - left_sum) / (right_sum - left_sum);
+      double r = left_point + (right_point - left_point) * pos;
+      if (r < min_) r = min_;
+      if (r > max_) r = max_;
+      return r;
+    }
+  }
+  return max_;
+}
+
+double Histogram::Average() const {
+  if (num_ == 0.0) return 0;
+  return sum_ / num_;
+}
+
+double Histogram::StandardDeviation() const {
+  if (num_ == 0.0) return 0;
+  double variance = (sum_squares_ * num_ - sum_ * sum_) / (num_ * num_);
+  return sqrt(variance);
+}
+
+std::string Histogram::ToString() const {
+  std::string r;
+  char buf[200];
+  snprintf(buf, sizeof(buf), "Count: %.0f  Average: %.4f  StdDev: %.2f\n", num_,
+           Average(), StandardDeviation());
+  r.append(buf);
+  snprintf(buf, sizeof(buf), "Min: %.4f  Median: %.4f  Max: %.4f\n",
+           (num_ == 0.0 ? 0.0 : min_), Median(), max_);
+  r.append(buf);
+  r.append("------------------------------------------------------\n");
+  const double mult = 100.0 / num_;
+  double sum = 0;
+  for (int b = 0; b < kNumBuckets; b++) {
+    if (buckets_[b] <= 0.0) continue;
+    sum += buckets_[b];
+    snprintf(buf, sizeof(buf), "[ %7.0f, %7.0f ) %7.0f %7.3f%% %7.3f%% ",
+             ((b == 0) ? 0.0 : kBucketLimit[b - 1]),  // left
+             kBucketLimit[b],                         // right
+             buckets_[b],                             // count
+             mult * buckets_[b],                      // percentage
+             mult * sum);                             // cumulative percentage
+    r.append(buf);
+
+    // Add hash marks based on percentage; 20 marks for 100%.
+    int marks = static_cast<int>(20 * (buckets_[b] / num_) + 0.5);
+    r.append(marks, '#');
+    r.push_back('\n');
+  }
+  return r;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/histogram.h b/ChattingApp 000/Pods/leveldb-library/util/histogram.h
new file mode 100644
index 0000000..4da60fb
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/histogram.h	
@@ -0,0 +1,44 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_HISTOGRAM_H_
+#define STORAGE_LEVELDB_UTIL_HISTOGRAM_H_
+
+#include <string>
+
+namespace leveldb {
+
+class Histogram {
+ public:
+  Histogram() {}
+  ~Histogram() {}
+
+  void Clear();
+  void Add(double value);
+  void Merge(const Histogram& other);
+
+  std::string ToString() const;
+
+ private:
+  enum { kNumBuckets = 154 };
+
+  double Median() const;
+  double Percentile(double p) const;
+  double Average() const;
+  double StandardDeviation() const;
+
+  static const double kBucketLimit[kNumBuckets];
+
+  double min_;
+  double max_;
+  double num_;
+  double sum_;
+  double sum_squares_;
+
+  double buckets_[kNumBuckets];
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_HISTOGRAM_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/logging.cc b/ChattingApp 000/Pods/leveldb-library/util/logging.cc
new file mode 100644
index 0000000..1ad8f1c
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/logging.cc	
@@ -0,0 +1,85 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/logging.h"
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <limits>
+
+#include "leveldb/env.h"
+#include "leveldb/slice.h"
+
+namespace leveldb {
+
+void AppendNumberTo(std::string* str, uint64_t num) {
+  char buf[30];
+  snprintf(buf, sizeof(buf), "%llu", (unsigned long long)num);
+  str->append(buf);
+}
+
+void AppendEscapedStringTo(std::string* str, const Slice& value) {
+  for (size_t i = 0; i < value.size(); i++) {
+    char c = value[i];
+    if (c >= ' ' && c <= '~') {
+      str->push_back(c);
+    } else {
+      char buf[10];
+      snprintf(buf, sizeof(buf), "\\x%02x",
+               static_cast<unsigned int>(c) & 0xff);
+      str->append(buf);
+    }
+  }
+}
+
+std::string NumberToString(uint64_t num) {
+  std::string r;
+  AppendNumberTo(&r, num);
+  return r;
+}
+
+std::string EscapeString(const Slice& value) {
+  std::string r;
+  AppendEscapedStringTo(&r, value);
+  return r;
+}
+
+bool ConsumeDecimalNumber(Slice* in, uint64_t* val) {
+  // Constants that will be optimized away.
+  constexpr const uint64_t kMaxUint64 = std::numeric_limits<uint64_t>::max();
+  constexpr const char kLastDigitOfMaxUint64 =
+      '0' + static_cast<char>(kMaxUint64 % 10);
+
+  uint64_t value = 0;
+
+  // reinterpret_cast-ing from char* to unsigned char* to avoid signedness.
+  const unsigned char* start =
+      reinterpret_cast<const unsigned char*>(in->data());
+
+  const unsigned char* end = start + in->size();
+  const unsigned char* current = start;
+  for (; current != end; ++current) {
+    const unsigned char ch = *current;
+    if (ch < '0' || ch > '9') break;
+
+    // Overflow check.
+    // kMaxUint64 / 10 is also constant and will be optimized away.
+    if (value > kMaxUint64 / 10 ||
+        (value == kMaxUint64 / 10 && ch > kLastDigitOfMaxUint64)) {
+      return false;
+    }
+
+    value = (value * 10) + (ch - '0');
+  }
+
+  *val = value;
+  const size_t digits_consumed = current - start;
+  in->remove_prefix(digits_consumed);
+  return digits_consumed != 0;
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/logging.h b/ChattingApp 000/Pods/leveldb-library/util/logging.h
new file mode 100644
index 0000000..8ff2da8
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/logging.h	
@@ -0,0 +1,45 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Must not be included from any .h files to avoid polluting the namespace
+// with macros.
+
+#ifndef STORAGE_LEVELDB_UTIL_LOGGING_H_
+#define STORAGE_LEVELDB_UTIL_LOGGING_H_
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include <string>
+
+#include "port/port.h"
+
+namespace leveldb {
+
+class Slice;
+class WritableFile;
+
+// Append a human-readable printout of "num" to *str
+void AppendNumberTo(std::string* str, uint64_t num);
+
+// Append a human-readable printout of "value" to *str.
+// Escapes any non-printable characters found in "value".
+void AppendEscapedStringTo(std::string* str, const Slice& value);
+
+// Return a human-readable printout of "num"
+std::string NumberToString(uint64_t num);
+
+// Return a human-readable version of "value".
+// Escapes any non-printable characters found in "value".
+std::string EscapeString(const Slice& value);
+
+// Parse a human-readable number from "*in" into *value.  On success,
+// advances "*in" past the consumed number and sets "*val" to the
+// numeric value.  Otherwise, returns false and leaves *in in an
+// unspecified state.
+bool ConsumeDecimalNumber(Slice* in, uint64_t* val);
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_LOGGING_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/mutexlock.h b/ChattingApp 000/Pods/leveldb-library/util/mutexlock.h
new file mode 100644
index 0000000..0cb2e25
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/mutexlock.h	
@@ -0,0 +1,39 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
+#define STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
+
+#include "port/port.h"
+#include "port/thread_annotations.h"
+
+namespace leveldb {
+
+// Helper class that locks a mutex on construction and unlocks the mutex when
+// the destructor of the MutexLock object is invoked.
+//
+// Typical usage:
+//
+//   void MyClass::MyMethod() {
+//     MutexLock l(&mu_);       // mu_ is an instance variable
+//     ... some complex code, possibly with multiple return paths ...
+//   }
+
+class SCOPED_LOCKABLE MutexLock {
+ public:
+  explicit MutexLock(port::Mutex* mu) EXCLUSIVE_LOCK_FUNCTION(mu) : mu_(mu) {
+    this->mu_->Lock();
+  }
+  ~MutexLock() UNLOCK_FUNCTION() { this->mu_->Unlock(); }
+
+  MutexLock(const MutexLock&) = delete;
+  MutexLock& operator=(const MutexLock&) = delete;
+
+ private:
+  port::Mutex* const mu_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_MUTEXLOCK_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/no_destructor.h b/ChattingApp 000/Pods/leveldb-library/util/no_destructor.h
new file mode 100644
index 0000000..a0d3b87
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/no_destructor.h	
@@ -0,0 +1,46 @@
+// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_
+#define STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_
+
+#include <type_traits>
+#include <utility>
+
+namespace leveldb {
+
+// Wraps an instance whose destructor is never called.
+//
+// This is intended for use with function-level static variables.
+template <typename InstanceType>
+class NoDestructor {
+ public:
+  template <typename... ConstructorArgTypes>
+  explicit NoDestructor(ConstructorArgTypes&&... constructor_args) {
+    static_assert(sizeof(instance_storage_) >= sizeof(InstanceType),
+                  "instance_storage_ is not large enough to hold the instance");
+    static_assert(
+        alignof(decltype(instance_storage_)) >= alignof(InstanceType),
+        "instance_storage_ does not meet the instance's alignment requirement");
+    new (&instance_storage_)
+        InstanceType(std::forward<ConstructorArgTypes>(constructor_args)...);
+  }
+
+  ~NoDestructor() = default;
+
+  NoDestructor(const NoDestructor&) = delete;
+  NoDestructor& operator=(const NoDestructor&) = delete;
+
+  InstanceType* get() {
+    return reinterpret_cast<InstanceType*>(&instance_storage_);
+  }
+
+ private:
+  typename std::aligned_storage<sizeof(InstanceType),
+                                alignof(InstanceType)>::type instance_storage_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/options.cc b/ChattingApp 000/Pods/leveldb-library/util/options.cc
new file mode 100644
index 0000000..62de5bf
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/options.cc	
@@ -0,0 +1,14 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/options.h"
+
+#include "leveldb/comparator.h"
+#include "leveldb/env.h"
+
+namespace leveldb {
+
+Options::Options() : comparator(BytewiseComparator()), env(Env::Default()) {}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/posix_logger.h b/ChattingApp 000/Pods/leveldb-library/util/posix_logger.h
new file mode 100644
index 0000000..28e15d1
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/posix_logger.h	
@@ -0,0 +1,130 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Logger implementation that can be shared by all environments
+// where enough posix functionality is available.
+
+#ifndef STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_
+#define STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_
+
+#include <sys/time.h>
+
+#include <cassert>
+#include <cstdarg>
+#include <cstdio>
+#include <ctime>
+#include <sstream>
+#include <thread>
+
+#include "leveldb/env.h"
+
+namespace leveldb {
+
+class PosixLogger final : public Logger {
+ public:
+  // Creates a logger that writes to the given file.
+  //
+  // The PosixLogger instance takes ownership of the file handle.
+  explicit PosixLogger(std::FILE* fp) : fp_(fp) { assert(fp != nullptr); }
+
+  ~PosixLogger() override { std::fclose(fp_); }
+
+  void Logv(const char* format, va_list arguments) override {
+    // Record the time as close to the Logv() call as possible.
+    struct ::timeval now_timeval;
+    ::gettimeofday(&now_timeval, nullptr);
+    const std::time_t now_seconds = now_timeval.tv_sec;
+    struct std::tm now_components;
+    ::localtime_r(&now_seconds, &now_components);
+
+    // Record the thread ID.
+    constexpr const int kMaxThreadIdSize = 32;
+    std::ostringstream thread_stream;
+    thread_stream << std::this_thread::get_id();
+    std::string thread_id = thread_stream.str();
+    if (thread_id.size() > kMaxThreadIdSize) {
+      thread_id.resize(kMaxThreadIdSize);
+    }
+
+    // We first attempt to print into a stack-allocated buffer. If this attempt
+    // fails, we make a second attempt with a dynamically allocated buffer.
+    constexpr const int kStackBufferSize = 512;
+    char stack_buffer[kStackBufferSize];
+    static_assert(sizeof(stack_buffer) == static_cast<size_t>(kStackBufferSize),
+                  "sizeof(char) is expected to be 1 in C++");
+
+    int dynamic_buffer_size = 0;  // Computed in the first iteration.
+    for (int iteration = 0; iteration < 2; ++iteration) {
+      const int buffer_size =
+          (iteration == 0) ? kStackBufferSize : dynamic_buffer_size;
+      char* const buffer =
+          (iteration == 0) ? stack_buffer : new char[dynamic_buffer_size];
+
+      // Print the header into the buffer.
+      int buffer_offset = snprintf(
+          buffer, buffer_size, "%04d/%02d/%02d-%02d:%02d:%02d.%06d %s ",
+          now_components.tm_year + 1900, now_components.tm_mon + 1,
+          now_components.tm_mday, now_components.tm_hour, now_components.tm_min,
+          now_components.tm_sec, static_cast<int>(now_timeval.tv_usec),
+          thread_id.c_str());
+
+      // The header can be at most 28 characters (10 date + 15 time +
+      // 3 delimiters) plus the thread ID, which should fit comfortably into the
+      // static buffer.
+      assert(buffer_offset <= 28 + kMaxThreadIdSize);
+      static_assert(28 + kMaxThreadIdSize < kStackBufferSize,
+                    "stack-allocated buffer may not fit the message header");
+      assert(buffer_offset < buffer_size);
+
+      // Print the message into the buffer.
+      std::va_list arguments_copy;
+      va_copy(arguments_copy, arguments);
+      buffer_offset +=
+          std::vsnprintf(buffer + buffer_offset, buffer_size - buffer_offset,
+                         format, arguments_copy);
+      va_end(arguments_copy);
+
+      // The code below may append a newline at the end of the buffer, which
+      // requires an extra character.
+      if (buffer_offset >= buffer_size - 1) {
+        // The message did not fit into the buffer.
+        if (iteration == 0) {
+          // Re-run the loop and use a dynamically-allocated buffer. The buffer
+          // will be large enough for the log message, an extra newline and a
+          // null terminator.
+          dynamic_buffer_size = buffer_offset + 2;
+          continue;
+        }
+
+        // The dynamically-allocated buffer was incorrectly sized. This should
+        // not happen, assuming a correct implementation of (v)snprintf. Fail
+        // in tests, recover by truncating the log message in production.
+        assert(false);
+        buffer_offset = buffer_size - 1;
+      }
+
+      // Add a newline if necessary.
+      if (buffer[buffer_offset - 1] != '\n') {
+        buffer[buffer_offset] = '\n';
+        ++buffer_offset;
+      }
+
+      assert(buffer_offset <= buffer_size);
+      std::fwrite(buffer, 1, buffer_offset, fp_);
+      std::fflush(fp_);
+
+      if (iteration != 0) {
+        delete[] buffer;
+      }
+      break;
+    }
+  }
+
+ private:
+  std::FILE* const fp_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_POSIX_LOGGER_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/random.h b/ChattingApp 000/Pods/leveldb-library/util/random.h
new file mode 100644
index 0000000..76f7daf
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/random.h	
@@ -0,0 +1,63 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_RANDOM_H_
+#define STORAGE_LEVELDB_UTIL_RANDOM_H_
+
+#include <stdint.h>
+
+namespace leveldb {
+
+// A very simple random number generator.  Not especially good at
+// generating truly random bits, but good enough for our needs in this
+// package.
+class Random {
+ private:
+  uint32_t seed_;
+
+ public:
+  explicit Random(uint32_t s) : seed_(s & 0x7fffffffu) {
+    // Avoid bad seeds.
+    if (seed_ == 0 || seed_ == 2147483647L) {
+      seed_ = 1;
+    }
+  }
+  uint32_t Next() {
+    static const uint32_t M = 2147483647L;  // 2^31-1
+    static const uint64_t A = 16807;        // bits 14, 8, 7, 5, 2, 1, 0
+    // We are computing
+    //       seed_ = (seed_ * A) % M,    where M = 2^31-1
+    //
+    // seed_ must not be zero or M, or else all subsequent computed values
+    // will be zero or M respectively.  For all other values, seed_ will end
+    // up cycling through every number in [1,M-1]
+    uint64_t product = seed_ * A;
+
+    // Compute (product % M) using the fact that ((x << 31) % M) == x.
+    seed_ = static_cast<uint32_t>((product >> 31) + (product & M));
+    // The first reduction may overflow by 1 bit, so we may need to
+    // repeat.  mod == M is not possible; using > allows the faster
+    // sign-bit-based test.
+    if (seed_ > M) {
+      seed_ -= M;
+    }
+    return seed_;
+  }
+  // Returns a uniformly distributed value in the range [0..n-1]
+  // REQUIRES: n > 0
+  uint32_t Uniform(int n) { return Next() % n; }
+
+  // Randomly returns true ~"1/n" of the time, and false otherwise.
+  // REQUIRES: n > 0
+  bool OneIn(int n) { return (Next() % n) == 0; }
+
+  // Skewed: pick "base" uniformly from range [0,max_log] and then
+  // return "base" random bits.  The effect is to pick a number in the
+  // range [0,2^max_log-1] with exponential bias towards smaller numbers.
+  uint32_t Skewed(int max_log) { return Uniform(1 << Uniform(max_log + 1)); }
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_RANDOM_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/status.cc b/ChattingApp 000/Pods/leveldb-library/util/status.cc
new file mode 100644
index 0000000..6ca8da6
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/status.cc	
@@ -0,0 +1,77 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/status.h"
+
+#include <stdio.h>
+
+#include "port/port.h"
+
+namespace leveldb {
+
+const char* Status::CopyState(const char* state) {
+  uint32_t size;
+  memcpy(&size, state, sizeof(size));
+  char* result = new char[size + 5];
+  memcpy(result, state, size + 5);
+  return result;
+}
+
+Status::Status(Code code, const Slice& msg, const Slice& msg2) {
+  assert(code != kOk);
+  const uint32_t len1 = msg.size();
+  const uint32_t len2 = msg2.size();
+  const uint32_t size = len1 + (len2 ? (2 + len2) : 0);
+  char* result = new char[size + 5];
+  memcpy(result, &size, sizeof(size));
+  result[4] = static_cast<char>(code);
+  memcpy(result + 5, msg.data(), len1);
+  if (len2) {
+    result[5 + len1] = ':';
+    result[6 + len1] = ' ';
+    memcpy(result + 7 + len1, msg2.data(), len2);
+  }
+  state_ = result;
+}
+
+std::string Status::ToString() const {
+  if (state_ == nullptr) {
+    return "OK";
+  } else {
+    char tmp[30];
+    const char* type;
+    switch (code()) {
+      case kOk:
+        type = "OK";
+        break;
+      case kNotFound:
+        type = "NotFound: ";
+        break;
+      case kCorruption:
+        type = "Corruption: ";
+        break;
+      case kNotSupported:
+        type = "Not implemented: ";
+        break;
+      case kInvalidArgument:
+        type = "Invalid argument: ";
+        break;
+      case kIOError:
+        type = "IO error: ";
+        break;
+      default:
+        snprintf(tmp, sizeof(tmp),
+                 "Unknown code(%d): ", static_cast<int>(code()));
+        type = tmp;
+        break;
+    }
+    std::string result(type);
+    uint32_t length;
+    memcpy(&length, state_, sizeof(length));
+    result.append(state_ + 5, length);
+    return result;
+  }
+}
+
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/testharness.cc b/ChattingApp 000/Pods/leveldb-library/util/testharness.cc
new file mode 100644
index 0000000..318ecfa
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/testharness.cc	
@@ -0,0 +1,81 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "util/testharness.h"
+
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <string>
+#include <vector>
+
+#include "leveldb/env.h"
+
+namespace leveldb {
+namespace test {
+
+namespace {
+struct Test {
+  const char* base;
+  const char* name;
+  void (*func)();
+};
+std::vector<Test>* tests;
+}  // namespace
+
+bool RegisterTest(const char* base, const char* name, void (*func)()) {
+  if (tests == nullptr) {
+    tests = new std::vector<Test>;
+  }
+  Test t;
+  t.base = base;
+  t.name = name;
+  t.func = func;
+  tests->push_back(t);
+  return true;
+}
+
+int RunAllTests() {
+  const char* matcher = getenv("LEVELDB_TESTS");
+
+  int num = 0;
+  if (tests != nullptr) {
+    for (size_t i = 0; i < tests->size(); i++) {
+      const Test& t = (*tests)[i];
+      if (matcher != nullptr) {
+        std::string name = t.base;
+        name.push_back('.');
+        name.append(t.name);
+        if (strstr(name.c_str(), matcher) == nullptr) {
+          continue;
+        }
+      }
+      fprintf(stderr, "==== Test %s.%s\n", t.base, t.name);
+      (*t.func)();
+      ++num;
+    }
+  }
+  fprintf(stderr, "==== PASSED %d tests\n", num);
+  return 0;
+}
+
+std::string TmpDir() {
+  std::string dir;
+  Status s = Env::Default()->GetTestDirectory(&dir);
+  ASSERT_TRUE(s.ok()) << s.ToString();
+  return dir;
+}
+
+int RandomSeed() {
+  const char* env = getenv("TEST_RANDOM_SEED");
+  int result = (env != nullptr ? atoi(env) : 301);
+  if (result <= 0) {
+    result = 301;
+  }
+  return result;
+}
+
+}  // namespace test
+}  // namespace leveldb
diff --git a/ChattingApp 000/Pods/leveldb-library/util/testharness.h b/ChattingApp 000/Pods/leveldb-library/util/testharness.h
new file mode 100644
index 0000000..72cd162
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/testharness.h	
@@ -0,0 +1,141 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_TESTHARNESS_H_
+#define STORAGE_LEVELDB_UTIL_TESTHARNESS_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sstream>
+
+#include "leveldb/status.h"
+
+namespace leveldb {
+namespace test {
+
+// Run some of the tests registered by the TEST() macro.  If the
+// environment variable "LEVELDB_TESTS" is not set, runs all tests.
+// Otherwise, runs only the tests whose name contains the value of
+// "LEVELDB_TESTS" as a substring.  E.g., suppose the tests are:
+//    TEST(Foo, Hello) { ... }
+//    TEST(Foo, World) { ... }
+// LEVELDB_TESTS=Hello will run the first test
+// LEVELDB_TESTS=o     will run both tests
+// LEVELDB_TESTS=Junk  will run no tests
+//
+// Returns 0 if all tests pass.
+// Dies or returns a non-zero value if some test fails.
+int RunAllTests();
+
+// Return the directory to use for temporary storage.
+std::string TmpDir();
+
+// Return a randomization seed for this run.  Typically returns the
+// same number on repeated invocations of this binary, but automated
+// runs may be able to vary the seed.
+int RandomSeed();
+
+// An instance of Tester is allocated to hold temporary state during
+// the execution of an assertion.
+class Tester {
+ private:
+  bool ok_;
+  const char* fname_;
+  int line_;
+  std::stringstream ss_;
+
+ public:
+  Tester(const char* f, int l) : ok_(true), fname_(f), line_(l) {}
+
+  ~Tester() {
+    if (!ok_) {
+      fprintf(stderr, "%s:%d:%s\n", fname_, line_, ss_.str().c_str());
+      exit(1);
+    }
+  }
+
+  Tester& Is(bool b, const char* msg) {
+    if (!b) {
+      ss_ << " Assertion failure " << msg;
+      ok_ = false;
+    }
+    return *this;
+  }
+
+  Tester& IsOk(const Status& s) {
+    if (!s.ok()) {
+      ss_ << " " << s.ToString();
+      ok_ = false;
+    }
+    return *this;
+  }
+
+#define BINARY_OP(name, op)                          \
+  template <class X, class Y>                        \
+  Tester& name(const X& x, const Y& y) {             \
+    if (!(x op y)) {                                 \
+      ss_ << " failed: " << x << (" " #op " ") << y; \
+      ok_ = false;                                   \
+    }                                                \
+    return *this;                                    \
+  }
+
+  BINARY_OP(IsEq, ==)
+  BINARY_OP(IsNe, !=)
+  BINARY_OP(IsGe, >=)
+  BINARY_OP(IsGt, >)
+  BINARY_OP(IsLe, <=)
+  BINARY_OP(IsLt, <)
+#undef BINARY_OP
+
+  // Attach the specified value to the error message if an error has occurred
+  template <class V>
+  Tester& operator<<(const V& value) {
+    if (!ok_) {
+      ss_ << " " << value;
+    }
+    return *this;
+  }
+};
+
+#define ASSERT_TRUE(c) ::leveldb::test::Tester(__FILE__, __LINE__).Is((c), #c)
+#define ASSERT_OK(s) ::leveldb::test::Tester(__FILE__, __LINE__).IsOk((s))
+#define ASSERT_EQ(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsEq((a), (b))
+#define ASSERT_NE(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsNe((a), (b))
+#define ASSERT_GE(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsGe((a), (b))
+#define ASSERT_GT(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsGt((a), (b))
+#define ASSERT_LE(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsLe((a), (b))
+#define ASSERT_LT(a, b) \
+  ::leveldb::test::Tester(__FILE__, __LINE__).IsLt((a), (b))
+
+#define TCONCAT(a, b) TCONCAT1(a, b)
+#define TCONCAT1(a, b) a##b
+
+#define TEST(base, name)                                              \
+  class TCONCAT(_Test_, name) : public base {                         \
+   public:                                                            \
+    void _Run();                                                      \
+    static void _RunIt() {                                            \
+      TCONCAT(_Test_, name) t;                                        \
+      t._Run();                                                       \
+    }                                                                 \
+  };                                                                  \
+  bool TCONCAT(_Test_ignored_, name) = ::leveldb::test::RegisterTest( \
+      #base, #name, &TCONCAT(_Test_, name)::_RunIt);                  \
+  void TCONCAT(_Test_, name)::_Run()
+
+// Register the specified test.  Typically not used directly, but
+// invoked via the macro expansion of TEST.
+bool RegisterTest(const char* base, const char* name, void (*func)());
+
+}  // namespace test
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_TESTHARNESS_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/testutil.h b/ChattingApp 000/Pods/leveldb-library/util/testutil.h
new file mode 100644
index 0000000..bb4051b
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/testutil.h	
@@ -0,0 +1,66 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_UTIL_TESTUTIL_H_
+#define STORAGE_LEVELDB_UTIL_TESTUTIL_H_
+
+#include "helpers/memenv/memenv.h"
+#include "leveldb/env.h"
+#include "leveldb/slice.h"
+#include "util/random.h"
+
+namespace leveldb {
+namespace test {
+
+// Store in *dst a random string of length "len" and return a Slice that
+// references the generated data.
+Slice RandomString(Random* rnd, int len, std::string* dst);
+
+// Return a random key with the specified length that may contain interesting
+// characters (e.g. \x00, \xff, etc.).
+std::string RandomKey(Random* rnd, int len);
+
+// Store in *dst a string of length "len" that will compress to
+// "N*compressed_fraction" bytes and return a Slice that references
+// the generated data.
+Slice CompressibleString(Random* rnd, double compressed_fraction, size_t len,
+                         std::string* dst);
+
+// A wrapper that allows injection of errors.
+class ErrorEnv : public EnvWrapper {
+ public:
+  bool writable_file_error_;
+  int num_writable_file_errors_;
+
+  ErrorEnv()
+      : EnvWrapper(NewMemEnv(Env::Default())),
+        writable_file_error_(false),
+        num_writable_file_errors_(0) {}
+  ~ErrorEnv() override { delete target(); }
+
+  Status NewWritableFile(const std::string& fname,
+                         WritableFile** result) override {
+    if (writable_file_error_) {
+      ++num_writable_file_errors_;
+      *result = nullptr;
+      return Status::IOError(fname, "fake error");
+    }
+    return target()->NewWritableFile(fname, result);
+  }
+
+  Status NewAppendableFile(const std::string& fname,
+                           WritableFile** result) override {
+    if (writable_file_error_) {
+      ++num_writable_file_errors_;
+      *result = nullptr;
+      return Status::IOError(fname, "fake error");
+    }
+    return target()->NewAppendableFile(fname, result);
+  }
+};
+
+}  // namespace test
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_TESTUTIL_H_
diff --git a/ChattingApp 000/Pods/leveldb-library/util/windows_logger.h b/ChattingApp 000/Pods/leveldb-library/util/windows_logger.h
new file mode 100644
index 0000000..9296063
--- /dev/null
+++ b/ChattingApp 000/Pods/leveldb-library/util/windows_logger.h	
@@ -0,0 +1,124 @@
+// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+//
+// Logger implementation for the Windows platform.
+
+#ifndef STORAGE_LEVELDB_UTIL_WINDOWS_LOGGER_H_
+#define STORAGE_LEVELDB_UTIL_WINDOWS_LOGGER_H_
+
+#include <cassert>
+#include <cstdarg>
+#include <cstdio>
+#include <ctime>
+#include <sstream>
+#include <thread>
+
+#include "leveldb/env.h"
+
+namespace leveldb {
+
+class WindowsLogger final : public Logger {
+ public:
+  // Creates a logger that writes to the given file.
+  //
+  // The PosixLogger instance takes ownership of the file handle.
+  explicit WindowsLogger(std::FILE* fp) : fp_(fp) { assert(fp != nullptr); }
+
+  ~WindowsLogger() override { std::fclose(fp_); }
+
+  void Logv(const char* format, va_list arguments) override {
+    // Record the time as close to the Logv() call as possible.
+    SYSTEMTIME now_components;
+    ::GetLocalTime(&now_components);
+
+    // Record the thread ID.
+    constexpr const int kMaxThreadIdSize = 32;
+    std::ostringstream thread_stream;
+    thread_stream << std::this_thread::get_id();
+    std::string thread_id = thread_stream.str();
+    if (thread_id.size() > kMaxThreadIdSize) {
+      thread_id.resize(kMaxThreadIdSize);
+    }
+
+    // We first attempt to print into a stack-allocated buffer. If this attempt
+    // fails, we make a second attempt with a dynamically allocated buffer.
+    constexpr const int kStackBufferSize = 512;
+    char stack_buffer[kStackBufferSize];
+    static_assert(sizeof(stack_buffer) == static_cast<size_t>(kStackBufferSize),
+                  "sizeof(char) is expected to be 1 in C++");
+
+    int dynamic_buffer_size = 0;  // Computed in the first iteration.
+    for (int iteration = 0; iteration < 2; ++iteration) {
+      const int buffer_size =
+          (iteration == 0) ? kStackBufferSize : dynamic_buffer_size;
+      char* const buffer =
+          (iteration == 0) ? stack_buffer : new char[dynamic_buffer_size];
+
+      // Print the header into the buffer.
+      int buffer_offset = snprintf(
+          buffer, buffer_size, "%04d/%02d/%02d-%02d:%02d:%02d.%06d %s ",
+          now_components.wYear, now_components.wMonth, now_components.wDay,
+          now_components.wHour, now_components.wMinute, now_components.wSecond,
+          static_cast<int>(now_components.wMilliseconds * 1000),
+          thread_id.c_str());
+
+      // The header can be at most 28 characters (10 date + 15 time +
+      // 3 delimiters) plus the thread ID, which should fit comfortably into the
+      // static buffer.
+      assert(buffer_offset <= 28 + kMaxThreadIdSize);
+      static_assert(28 + kMaxThreadIdSize < kStackBufferSize,
+                    "stack-allocated buffer may not fit the message header");
+      assert(buffer_offset < buffer_size);
+
+      // Print the message into the buffer.
+      std::va_list arguments_copy;
+      va_copy(arguments_copy, arguments);
+      buffer_offset +=
+          std::vsnprintf(buffer + buffer_offset, buffer_size - buffer_offset,
+                         format, arguments_copy);
+      va_end(arguments_copy);
+
+      // The code below may append a newline at the end of the buffer, which
+      // requires an extra character.
+      if (buffer_offset >= buffer_size - 1) {
+        // The message did not fit into the buffer.
+        if (iteration == 0) {
+          // Re-run the loop and use a dynamically-allocated buffer. The buffer
+          // will be large enough for the log message, an extra newline and a
+          // null terminator.
+          dynamic_buffer_size = buffer_offset + 2;
+          continue;
+        }
+
+        // The dynamically-allocated buffer was incorrectly sized. This should
+        // not happen, assuming a correct implementation of (v)snprintf. Fail
+        // in tests, recover by truncating the log message in production.
+        assert(false);
+        buffer_offset = buffer_size - 1;
+      }
+
+      // Add a newline if necessary.
+      if (buffer[buffer_offset - 1] != '\n') {
+        buffer[buffer_offset] = '\n';
+        ++buffer_offset;
+      }
+
+      assert(buffer_offset <= buffer_size);
+      std::fwrite(buffer, 1, buffer_offset, fp_);
+      std::fflush(fp_);
+
+      if (iteration != 0) {
+        delete[] buffer;
+      }
+      break;
+    }
+  }
+
+ private:
+  std::FILE* const fp_;
+};
+
+}  // namespace leveldb
+
+#endif  // STORAGE_LEVELDB_UTIL_WINDOWS_LOGGER_H_
diff --git a/ChattingApp 000/Pods/nanopb/LICENSE.txt b/ChattingApp 000/Pods/nanopb/LICENSE.txt
new file mode 100644
index 0000000..d11c9af
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/LICENSE.txt	
@@ -0,0 +1,20 @@
+Copyright (c) 2011 Petteri Aimonen <jpa at nanopb.mail.kapsi.fi>
+
+This software is provided 'as-is', without any express or 
+implied warranty. In no event will the authors be held liable 
+for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any 
+purpose, including commercial applications, and to alter it and 
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you 
+   must not claim that you wrote the original software. If you use 
+   this software in a product, an acknowledgment in the product 
+   documentation would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and 
+   must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source 
+   distribution.
diff --git a/ChattingApp 000/Pods/nanopb/README.md b/ChattingApp 000/Pods/nanopb/README.md
new file mode 100644
index 0000000..1a73cdd
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/README.md	
@@ -0,0 +1,71 @@
+Nanopb - Protocol Buffers for Embedded Systems
+==============================================
+
+[![Build Status](https://travis-ci.org/nanopb/nanopb.svg?branch=master)](https://travis-ci.org/nanopb/nanopb)
+
+Nanopb is a small code-size Protocol Buffers implementation in ansi C. It is
+especially suitable for use in microcontrollers, but fits any memory
+restricted system.
+
+* **Homepage:** https://jpa.kapsi.fi/nanopb/
+* **Documentation:** https://jpa.kapsi.fi/nanopb/docs/
+* **Downloads:** https://jpa.kapsi.fi/nanopb/download/
+* **Forum:** https://groups.google.com/forum/#!forum/nanopb
+
+
+
+Using the nanopb library
+------------------------
+To use the nanopb library, you need to do two things:
+
+1. Compile your .proto files for nanopb, using `protoc`.
+2. Include *pb_encode.c*, *pb_decode.c* and *pb_common.c* in your project.
+
+The easiest way to get started is to study the project in "examples/simple".
+It contains a Makefile, which should work directly under most Linux systems.
+However, for any other kind of build system, see the manual steps in
+README.txt in that folder.
+
+
+
+Using the Protocol Buffers compiler (protoc)
+--------------------------------------------
+The nanopb generator is implemented as a plugin for the Google's own `protoc`
+compiler. This has the advantage that there is no need to reimplement the
+basic parsing of .proto files. However, it does mean that you need the
+Google's protobuf library in order to run the generator.
+
+If you have downloaded a binary package for nanopb (either Windows, Linux or
+Mac OS X version), the `protoc` binary is included in the 'generator-bin'
+folder. In this case, you are ready to go. Simply run this command:
+
+    generator-bin/protoc --nanopb_out=. myprotocol.proto
+
+However, if you are using a git checkout or a plain source distribution, you
+need to provide your own version of `protoc` and the Google's protobuf library.
+On Linux, the necessary packages are `protobuf-compiler` and `python-protobuf`.
+On Windows, you can either build Google's protobuf library from source or use
+one of the binary distributions of it. In either case, if you use a separate
+`protoc`, you need to manually give the path to nanopb generator:
+
+    protoc --plugin=protoc-gen-nanopb=nanopb/generator/protoc-gen-nanopb ...
+
+
+
+Running the tests
+-----------------
+If you want to perform further development of the nanopb core, or to verify
+its functionality using your compiler and platform, you'll want to run the
+test suite. The build rules for the test suite are implemented using Scons,
+so you need to have that installed (ex: `sudo apt install scons` on Ubuntu). To run the tests:
+
+    cd tests
+    scons
+
+This will show the progress of various test cases. If the output does not
+end in an error, the test cases were successful.
+
+Note: Mac OS X by default aliases 'clang' as 'gcc', while not actually
+supporting the same command line options as gcc does. To run tests on
+Mac OS X, use: "scons CC=clang CXX=clang". Same way can be used to run
+tests with different compilers on any platform.
diff --git a/ChattingApp 000/Pods/nanopb/pb.h b/ChattingApp 000/Pods/nanopb/pb.h
new file mode 100644
index 0000000..236e894
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb.h	
@@ -0,0 +1,599 @@
+/* Common parts of the nanopb library. Most of these are quite low-level
+ * stuff. For the high-level interface, see pb_encode.h and pb_decode.h.
+ */
+
+#ifndef PB_H_INCLUDED
+#define PB_H_INCLUDED
+
+/*****************************************************************
+ * Nanopb compilation time options. You can change these here by *
+ * uncommenting the lines, or on the compiler command line.      *
+ *****************************************************************/
+
+/* Enable support for dynamically allocated fields */
+/* #define PB_ENABLE_MALLOC 1 */
+
+/* Define this if your CPU / compiler combination does not support
+ * unaligned memory access to packed structures. */
+/* #define PB_NO_PACKED_STRUCTS 1 */
+
+/* Increase the number of required fields that are tracked.
+ * A compiler warning will tell if you need this. */
+/* #define PB_MAX_REQUIRED_FIELDS 256 */
+
+/* Add support for tag numbers > 255 and fields larger than 255 bytes. */
+/* #define PB_FIELD_16BIT 1 */
+
+/* Add support for tag numbers > 65536 and fields larger than 65536 bytes. */
+/* #define PB_FIELD_32BIT 1 */
+
+/* Disable support for error messages in order to save some code space. */
+/* #define PB_NO_ERRMSG 1 */
+
+/* Disable support for custom streams (support only memory buffers). */
+/* #define PB_BUFFER_ONLY 1 */
+
+/* Switch back to the old-style callback function signature.
+ * This was the default until nanopb-0.2.1. */
+/* #define PB_OLD_CALLBACK_STYLE */
+
+
+/* Don't encode scalar arrays as packed. This is only to be used when
+ * the decoder on the receiving side cannot process packed scalar arrays.
+ * Such example is older protobuf.js. */
+/* #define PB_ENCODE_ARRAYS_UNPACKED 1 */
+
+/******************************************************************
+ * You usually don't need to change anything below this line.     *
+ * Feel free to look around and use the defined macros, though.   *
+ ******************************************************************/
+
+
+/* Version of the nanopb library. Just in case you want to check it in
+ * your own program. */
+#define NANOPB_VERSION nanopb-0.3.9.8
+
+/* Include all the system headers needed by nanopb. You will need the
+ * definitions of the following:
+ * - strlen, memcpy, memset functions
+ * - [u]int_least8_t, uint_fast8_t, [u]int_least16_t, [u]int32_t, [u]int64_t
+ * - size_t
+ * - bool
+ *
+ * If you don't have the standard header files, you can instead provide
+ * a custom header that defines or includes all this. In that case,
+ * define PB_SYSTEM_HEADER to the path of this file.
+ */
+#ifdef PB_SYSTEM_HEADER
+#include PB_SYSTEM_HEADER
+#else
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <string.h>
+
+#ifdef PB_ENABLE_MALLOC
+#include <stdlib.h>
+#endif
+#endif
+
+/* Macro for defining packed structures (compiler dependent).
+ * This just reduces memory requirements, but is not required.
+ */
+#if defined(PB_NO_PACKED_STRUCTS)
+    /* Disable struct packing */
+#   define PB_PACKED_STRUCT_START
+#   define PB_PACKED_STRUCT_END
+#   define pb_packed
+#elif defined(__GNUC__) || defined(__clang__)
+    /* For GCC and clang */
+#   define PB_PACKED_STRUCT_START
+#   define PB_PACKED_STRUCT_END
+#   define pb_packed __attribute__((packed))
+#elif defined(__ICCARM__) || defined(__CC_ARM)
+    /* For IAR ARM and Keil MDK-ARM compilers */
+#   define PB_PACKED_STRUCT_START _Pragma("pack(push, 1)")
+#   define PB_PACKED_STRUCT_END _Pragma("pack(pop)")
+#   define pb_packed
+#elif defined(_MSC_VER) && (_MSC_VER >= 1500)
+    /* For Microsoft Visual C++ */
+#   define PB_PACKED_STRUCT_START __pragma(pack(push, 1))
+#   define PB_PACKED_STRUCT_END __pragma(pack(pop))
+#   define pb_packed
+#else
+    /* Unknown compiler */
+#   define PB_PACKED_STRUCT_START
+#   define PB_PACKED_STRUCT_END
+#   define pb_packed
+#endif
+
+/* Handly macro for suppressing unreferenced-parameter compiler warnings. */
+#ifndef PB_UNUSED
+#define PB_UNUSED(x) (void)(x)
+#endif
+
+/* Compile-time assertion, used for checking compatible compilation options.
+ * If this does not work properly on your compiler, use
+ * #define PB_NO_STATIC_ASSERT to disable it.
+ *
+ * But before doing that, check carefully the error message / place where it
+ * comes from to see if the error has a real cause. Unfortunately the error
+ * message is not always very clear to read, but you can see the reason better
+ * in the place where the PB_STATIC_ASSERT macro was called.
+ */
+#ifndef PB_NO_STATIC_ASSERT
+#ifndef PB_STATIC_ASSERT
+#define PB_STATIC_ASSERT(COND,MSG) typedef char PB_STATIC_ASSERT_MSG(MSG, __LINE__, __COUNTER__)[(COND)?1:-1];
+#define PB_STATIC_ASSERT_MSG(MSG, LINE, COUNTER) PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER)
+#define PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER) pb_static_assertion_##MSG##LINE##COUNTER
+#endif
+#else
+#define PB_STATIC_ASSERT(COND,MSG)
+#endif
+
+/* Number of required fields to keep track of. */
+#ifndef PB_MAX_REQUIRED_FIELDS
+#define PB_MAX_REQUIRED_FIELDS 64
+#endif
+
+#if PB_MAX_REQUIRED_FIELDS < 64
+#error You should not lower PB_MAX_REQUIRED_FIELDS from the default value (64).
+#endif
+
+/* List of possible field types. These are used in the autogenerated code.
+ * Least-significant 4 bits tell the scalar type
+ * Most-significant 4 bits specify repeated/required/packed etc.
+ */
+
+typedef uint_least8_t pb_type_t;
+
+/**** Field data types ****/
+
+/* Numeric types */
+#define PB_LTYPE_BOOL    0x00 /* bool */
+#define PB_LTYPE_VARINT  0x01 /* int32, int64, enum, bool */
+#define PB_LTYPE_UVARINT 0x02 /* uint32, uint64 */
+#define PB_LTYPE_SVARINT 0x03 /* sint32, sint64 */
+#define PB_LTYPE_FIXED32 0x04 /* fixed32, sfixed32, float */
+#define PB_LTYPE_FIXED64 0x05 /* fixed64, sfixed64, double */
+
+/* Marker for last packable field type. */
+#define PB_LTYPE_LAST_PACKABLE 0x05
+
+/* Byte array with pre-allocated buffer.
+ * data_size is the length of the allocated PB_BYTES_ARRAY structure. */
+#define PB_LTYPE_BYTES 0x06
+
+/* String with pre-allocated buffer.
+ * data_size is the maximum length. */
+#define PB_LTYPE_STRING 0x07
+
+/* Submessage
+ * submsg_fields is pointer to field descriptions */
+#define PB_LTYPE_SUBMESSAGE 0x08
+
+/* Extension pseudo-field
+ * The field contains a pointer to pb_extension_t */
+#define PB_LTYPE_EXTENSION 0x09
+
+/* Byte array with inline, pre-allocated byffer.
+ * data_size is the length of the inline, allocated buffer.
+ * This differs from PB_LTYPE_BYTES by defining the element as
+ * pb_byte_t[data_size] rather than pb_bytes_array_t. */
+#define PB_LTYPE_FIXED_LENGTH_BYTES 0x0A
+
+/* Number of declared LTYPES */
+#define PB_LTYPES_COUNT 0x0B
+#define PB_LTYPE_MASK 0x0F
+
+/**** Field repetition rules ****/
+
+#define PB_HTYPE_REQUIRED 0x00
+#define PB_HTYPE_OPTIONAL 0x10
+#define PB_HTYPE_REPEATED 0x20
+#define PB_HTYPE_ONEOF    0x30
+#define PB_HTYPE_MASK     0x30
+
+/**** Field allocation types ****/
+ 
+#define PB_ATYPE_STATIC   0x00
+#define PB_ATYPE_POINTER  0x80
+#define PB_ATYPE_CALLBACK 0x40
+#define PB_ATYPE_MASK     0xC0
+
+#define PB_ATYPE(x) ((x) & PB_ATYPE_MASK)
+#define PB_HTYPE(x) ((x) & PB_HTYPE_MASK)
+#define PB_LTYPE(x) ((x) & PB_LTYPE_MASK)
+
+/* Data type used for storing sizes of struct fields
+ * and array counts.
+ */
+#if defined(PB_FIELD_32BIT)
+    typedef uint32_t pb_size_t;
+    typedef int32_t pb_ssize_t;
+#elif defined(PB_FIELD_16BIT)
+    typedef uint_least16_t pb_size_t;
+    typedef int_least16_t pb_ssize_t;
+#else
+    typedef uint_least8_t pb_size_t;
+    typedef int_least8_t pb_ssize_t;
+#endif
+#define PB_SIZE_MAX ((pb_size_t)-1)
+
+/* Data type for storing encoded data and other byte streams.
+ * This typedef exists to support platforms where uint8_t does not exist.
+ * You can regard it as equivalent on uint8_t on other platforms.
+ */
+typedef uint_least8_t pb_byte_t;
+
+/* This structure is used in auto-generated constants
+ * to specify struct fields.
+ * You can change field sizes if you need structures
+ * larger than 256 bytes or field tags larger than 256.
+ * The compiler should complain if your .proto has such
+ * structures. Fix that by defining PB_FIELD_16BIT or
+ * PB_FIELD_32BIT.
+ */
+PB_PACKED_STRUCT_START
+typedef struct pb_field_s pb_field_t;
+struct pb_field_s {
+    pb_size_t tag;
+    pb_type_t type;
+    pb_size_t data_offset; /* Offset of field data, relative to previous field. */
+    pb_ssize_t size_offset; /* Offset of array size or has-boolean, relative to data */
+    pb_size_t data_size; /* Data size in bytes for a single item */
+    pb_size_t array_size; /* Maximum number of entries in array */
+    
+    /* Field definitions for submessage
+     * OR default value for all other non-array, non-callback types
+     * If null, then field will zeroed. */
+    const void *ptr;
+} pb_packed;
+PB_PACKED_STRUCT_END
+
+/* Make sure that the standard integer types are of the expected sizes.
+ * Otherwise fixed32/fixed64 fields can break.
+ *
+ * If you get errors here, it probably means that your stdint.h is not
+ * correct for your platform.
+ */
+#ifndef PB_WITHOUT_64BIT
+PB_STATIC_ASSERT(sizeof(int64_t) == 2 * sizeof(int32_t), INT64_T_WRONG_SIZE)
+PB_STATIC_ASSERT(sizeof(uint64_t) == 2 * sizeof(uint32_t), UINT64_T_WRONG_SIZE)
+#endif
+
+/* This structure is used for 'bytes' arrays.
+ * It has the number of bytes in the beginning, and after that an array.
+ * Note that actual structs used will have a different length of bytes array.
+ */
+#define PB_BYTES_ARRAY_T(n) struct { pb_size_t size; pb_byte_t bytes[n]; }
+#define PB_BYTES_ARRAY_T_ALLOCSIZE(n) ((size_t)n + offsetof(pb_bytes_array_t, bytes))
+
+struct pb_bytes_array_s {
+    pb_size_t size;
+    pb_byte_t bytes[1];
+};
+typedef struct pb_bytes_array_s pb_bytes_array_t;
+
+/* This structure is used for giving the callback function.
+ * It is stored in the message structure and filled in by the method that
+ * calls pb_decode.
+ *
+ * The decoding callback will be given a limited-length stream
+ * If the wire type was string, the length is the length of the string.
+ * If the wire type was a varint/fixed32/fixed64, the length is the length
+ * of the actual value.
+ * The function may be called multiple times (especially for repeated types,
+ * but also otherwise if the message happens to contain the field multiple
+ * times.)
+ *
+ * The encoding callback will receive the actual output stream.
+ * It should write all the data in one call, including the field tag and
+ * wire type. It can write multiple fields.
+ *
+ * The callback can be null if you want to skip a field.
+ */
+typedef struct pb_istream_s pb_istream_t;
+typedef struct pb_ostream_s pb_ostream_t;
+typedef struct pb_callback_s pb_callback_t;
+struct pb_callback_s {
+#ifdef PB_OLD_CALLBACK_STYLE
+    /* Deprecated since nanopb-0.2.1 */
+    union {
+        bool (*decode)(pb_istream_t *stream, const pb_field_t *field, void *arg);
+        bool (*encode)(pb_ostream_t *stream, const pb_field_t *field, const void *arg);
+    } funcs;
+#else
+    /* New function signature, which allows modifying arg contents in callback. */
+    union {
+        bool (*decode)(pb_istream_t *stream, const pb_field_t *field, void **arg);
+        bool (*encode)(pb_ostream_t *stream, const pb_field_t *field, void * const *arg);
+    } funcs;
+#endif    
+    
+    /* Free arg for use by callback */
+    void *arg;
+};
+
+/* Wire types. Library user needs these only in encoder callbacks. */
+typedef enum {
+    PB_WT_VARINT = 0,
+    PB_WT_64BIT  = 1,
+    PB_WT_STRING = 2,
+    PB_WT_32BIT  = 5
+} pb_wire_type_t;
+
+/* Structure for defining the handling of unknown/extension fields.
+ * Usually the pb_extension_type_t structure is automatically generated,
+ * while the pb_extension_t structure is created by the user. However,
+ * if you want to catch all unknown fields, you can also create a custom
+ * pb_extension_type_t with your own callback.
+ */
+typedef struct pb_extension_type_s pb_extension_type_t;
+typedef struct pb_extension_s pb_extension_t;
+struct pb_extension_type_s {
+    /* Called for each unknown field in the message.
+     * If you handle the field, read off all of its data and return true.
+     * If you do not handle the field, do not read anything and return true.
+     * If you run into an error, return false.
+     * Set to NULL for default handler.
+     */
+    bool (*decode)(pb_istream_t *stream, pb_extension_t *extension,
+                   uint32_t tag, pb_wire_type_t wire_type);
+    
+    /* Called once after all regular fields have been encoded.
+     * If you have something to write, do so and return true.
+     * If you do not have anything to write, just return true.
+     * If you run into an error, return false.
+     * Set to NULL for default handler.
+     */
+    bool (*encode)(pb_ostream_t *stream, const pb_extension_t *extension);
+    
+    /* Free field for use by the callback. */
+    const void *arg;
+};
+
+struct pb_extension_s {
+    /* Type describing the extension field. Usually you'll initialize
+     * this to a pointer to the automatically generated structure. */
+    const pb_extension_type_t *type;
+    
+    /* Destination for the decoded data. This must match the datatype
+     * of the extension field. */
+    void *dest;
+    
+    /* Pointer to the next extension handler, or NULL.
+     * If this extension does not match a field, the next handler is
+     * automatically called. */
+    pb_extension_t *next;
+
+    /* The decoder sets this to true if the extension was found.
+     * Ignored for encoding. */
+    bool found;
+};
+
+/* Memory allocation functions to use. You can define pb_realloc and
+ * pb_free to custom functions if you want. */
+#ifdef PB_ENABLE_MALLOC
+#   ifndef pb_realloc
+#       define pb_realloc(ptr, size) realloc(ptr, size)
+#   endif
+#   ifndef pb_free
+#       define pb_free(ptr) free(ptr)
+#   endif
+#endif
+
+/* This is used to inform about need to regenerate .pb.h/.pb.c files. */
+#define PB_PROTO_HEADER_VERSION 30
+
+/* These macros are used to declare pb_field_t's in the constant array. */
+/* Size of a structure member, in bytes. */
+#define pb_membersize(st, m) (sizeof ((st*)0)->m)
+/* Number of entries in an array. */
+#define pb_arraysize(st, m) (pb_membersize(st, m) / pb_membersize(st, m[0]))
+/* Delta from start of one member to the start of another member. */
+#define pb_delta(st, m1, m2) ((int)offsetof(st, m1) - (int)offsetof(st, m2))
+/* Marks the end of the field list */
+#define PB_LAST_FIELD {0,(pb_type_t) 0,0,0,0,0,0}
+
+/* Macros for filling in the data_offset field */
+/* data_offset for first field in a message */
+#define PB_DATAOFFSET_FIRST(st, m1, m2) (offsetof(st, m1))
+/* data_offset for subsequent fields */
+#define PB_DATAOFFSET_OTHER(st, m1, m2) (offsetof(st, m1) - offsetof(st, m2) - pb_membersize(st, m2))
+/* data offset for subsequent fields inside an union (oneof) */
+#define PB_DATAOFFSET_UNION(st, m1, m2) (PB_SIZE_MAX)
+/* Choose first/other based on m1 == m2 (deprecated, remains for backwards compatibility) */
+#define PB_DATAOFFSET_CHOOSE(st, m1, m2) (int)(offsetof(st, m1) == offsetof(st, m2) \
+                                  ? PB_DATAOFFSET_FIRST(st, m1, m2) \
+                                  : PB_DATAOFFSET_OTHER(st, m1, m2))
+
+/* Required fields are the simplest. They just have delta (padding) from
+ * previous field end, and the size of the field. Pointer is used for
+ * submessages and default values.
+ */
+#define PB_REQUIRED_STATIC(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_REQUIRED | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+
+/* Optional fields add the delta to the has_ variable. */
+#define PB_OPTIONAL_STATIC(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_OPTIONAL | ltype, \
+    fd, \
+    pb_delta(st, has_ ## m, m), \
+    pb_membersize(st, m), 0, ptr}
+
+#define PB_SINGULAR_STATIC(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_OPTIONAL | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+
+/* Repeated fields have a _count field and also the maximum number of entries. */
+#define PB_REPEATED_STATIC(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_REPEATED | ltype, \
+    fd, \
+    pb_delta(st, m ## _count, m), \
+    pb_membersize(st, m[0]), \
+    pb_arraysize(st, m), ptr}
+
+/* Allocated fields carry the size of the actual data, not the pointer */
+#define PB_REQUIRED_POINTER(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_REQUIRED | ltype, \
+    fd, 0, pb_membersize(st, m[0]), 0, ptr}
+
+/* Optional fields don't need a has_ variable, as information would be redundant */
+#define PB_OPTIONAL_POINTER(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_OPTIONAL | ltype, \
+    fd, 0, pb_membersize(st, m[0]), 0, ptr}
+
+/* Same as optional fields*/
+#define PB_SINGULAR_POINTER(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_OPTIONAL | ltype, \
+    fd, 0, pb_membersize(st, m[0]), 0, ptr}
+
+/* Repeated fields have a _count field and a pointer to array of pointers */
+#define PB_REPEATED_POINTER(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_REPEATED | ltype, \
+    fd, pb_delta(st, m ## _count, m), \
+    pb_membersize(st, m[0]), 0, ptr}
+
+/* Callbacks are much like required fields except with special datatype. */
+#define PB_REQUIRED_CALLBACK(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_CALLBACK | PB_HTYPE_REQUIRED | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+
+#define PB_OPTIONAL_CALLBACK(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_CALLBACK | PB_HTYPE_OPTIONAL | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+
+#define PB_SINGULAR_CALLBACK(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_CALLBACK | PB_HTYPE_OPTIONAL | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+    
+#define PB_REPEATED_CALLBACK(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_CALLBACK | PB_HTYPE_REPEATED | ltype, \
+    fd, 0, pb_membersize(st, m), 0, ptr}
+
+/* Optional extensions don't have the has_ field, as that would be redundant.
+ * Furthermore, the combination of OPTIONAL without has_ field is used
+ * for indicating proto3 style fields. Extensions exist in proto2 mode only,
+ * so they should be encoded according to proto2 rules. To avoid the conflict,
+ * extensions are marked as REQUIRED instead.
+ */
+#define PB_OPTEXT_STATIC(tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_REQUIRED | ltype, \
+    0, \
+    0, \
+    pb_membersize(st, m), 0, ptr}
+
+#define PB_OPTEXT_POINTER(tag, st, m, fd, ltype, ptr) \
+    PB_OPTIONAL_POINTER(tag, st, m, fd, ltype, ptr)
+
+#define PB_OPTEXT_CALLBACK(tag, st, m, fd, ltype, ptr) \
+    PB_OPTIONAL_CALLBACK(tag, st, m, fd, ltype, ptr)
+
+/* The mapping from protobuf types to LTYPEs is done using these macros. */
+#define PB_LTYPE_MAP_BOOL               PB_LTYPE_BOOL
+#define PB_LTYPE_MAP_BYTES              PB_LTYPE_BYTES
+#define PB_LTYPE_MAP_DOUBLE             PB_LTYPE_FIXED64
+#define PB_LTYPE_MAP_ENUM               PB_LTYPE_VARINT
+#define PB_LTYPE_MAP_UENUM              PB_LTYPE_UVARINT
+#define PB_LTYPE_MAP_FIXED32            PB_LTYPE_FIXED32
+#define PB_LTYPE_MAP_FIXED64            PB_LTYPE_FIXED64
+#define PB_LTYPE_MAP_FLOAT              PB_LTYPE_FIXED32
+#define PB_LTYPE_MAP_INT32              PB_LTYPE_VARINT
+#define PB_LTYPE_MAP_INT64              PB_LTYPE_VARINT
+#define PB_LTYPE_MAP_MESSAGE            PB_LTYPE_SUBMESSAGE
+#define PB_LTYPE_MAP_SFIXED32           PB_LTYPE_FIXED32
+#define PB_LTYPE_MAP_SFIXED64           PB_LTYPE_FIXED64
+#define PB_LTYPE_MAP_SINT32             PB_LTYPE_SVARINT
+#define PB_LTYPE_MAP_SINT64             PB_LTYPE_SVARINT
+#define PB_LTYPE_MAP_STRING             PB_LTYPE_STRING
+#define PB_LTYPE_MAP_UINT32             PB_LTYPE_UVARINT
+#define PB_LTYPE_MAP_UINT64             PB_LTYPE_UVARINT
+#define PB_LTYPE_MAP_EXTENSION          PB_LTYPE_EXTENSION
+#define PB_LTYPE_MAP_FIXED_LENGTH_BYTES PB_LTYPE_FIXED_LENGTH_BYTES
+
+/* This is the actual macro used in field descriptions.
+ * It takes these arguments:
+ * - Field tag number
+ * - Field type:   BOOL, BYTES, DOUBLE, ENUM, UENUM, FIXED32, FIXED64,
+ *                 FLOAT, INT32, INT64, MESSAGE, SFIXED32, SFIXED64
+ *                 SINT32, SINT64, STRING, UINT32, UINT64 or EXTENSION
+ * - Field rules:  REQUIRED, OPTIONAL or REPEATED
+ * - Allocation:   STATIC, CALLBACK or POINTER
+ * - Placement: FIRST or OTHER, depending on if this is the first field in structure.
+ * - Message name
+ * - Field name
+ * - Previous field name (or field name again for first field)
+ * - Pointer to default value or submsg fields.
+ */
+
+#define PB_FIELD(tag, type, rules, allocation, placement, message, field, prevfield, ptr) \
+        PB_ ## rules ## _ ## allocation(tag, message, field, \
+        PB_DATAOFFSET_ ## placement(message, field, prevfield), \
+        PB_LTYPE_MAP_ ## type, ptr)
+
+/* Field description for repeated static fixed count fields.*/
+#define PB_REPEATED_FIXED_COUNT(tag, type, placement, message, field, prevfield, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_REPEATED | PB_LTYPE_MAP_ ## type, \
+    PB_DATAOFFSET_ ## placement(message, field, prevfield), \
+    0, \
+    pb_membersize(message, field[0]), \
+    pb_arraysize(message, field), ptr}
+
+/* Field description for oneof fields. This requires taking into account the
+ * union name also, that's why a separate set of macros is needed.
+ */
+#define PB_ONEOF_STATIC(u, tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_ONEOF | ltype, \
+    fd, pb_delta(st, which_ ## u, u.m), \
+    pb_membersize(st, u.m), 0, ptr}
+
+#define PB_ONEOF_POINTER(u, tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_ONEOF | ltype, \
+    fd, pb_delta(st, which_ ## u, u.m), \
+    pb_membersize(st, u.m[0]), 0, ptr}
+
+#define PB_ONEOF_FIELD(union_name, tag, type, rules, allocation, placement, message, field, prevfield, ptr) \
+        PB_ONEOF_ ## allocation(union_name, tag, message, field, \
+        PB_DATAOFFSET_ ## placement(message, union_name.field, prevfield), \
+        PB_LTYPE_MAP_ ## type, ptr)
+
+#define PB_ANONYMOUS_ONEOF_STATIC(u, tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_STATIC | PB_HTYPE_ONEOF | ltype, \
+    fd, pb_delta(st, which_ ## u, m), \
+    pb_membersize(st, m), 0, ptr}
+
+#define PB_ANONYMOUS_ONEOF_POINTER(u, tag, st, m, fd, ltype, ptr) \
+    {tag, PB_ATYPE_POINTER | PB_HTYPE_ONEOF | ltype, \
+    fd, pb_delta(st, which_ ## u, m), \
+    pb_membersize(st, m[0]), 0, ptr}
+
+#define PB_ANONYMOUS_ONEOF_FIELD(union_name, tag, type, rules, allocation, placement, message, field, prevfield, ptr) \
+        PB_ANONYMOUS_ONEOF_ ## allocation(union_name, tag, message, field, \
+        PB_DATAOFFSET_ ## placement(message, field, prevfield), \
+        PB_LTYPE_MAP_ ## type, ptr)
+
+/* These macros are used for giving out error messages.
+ * They are mostly a debugging aid; the main error information
+ * is the true/false return value from functions.
+ * Some code space can be saved by disabling the error
+ * messages if not used.
+ *
+ * PB_SET_ERROR() sets the error message if none has been set yet.
+ *                msg must be a constant string literal.
+ * PB_GET_ERROR() always returns a pointer to a string.
+ * PB_RETURN_ERROR() sets the error and returns false from current
+ *                   function.
+ */
+#ifdef PB_NO_ERRMSG
+#define PB_SET_ERROR(stream, msg) PB_UNUSED(stream)
+#define PB_GET_ERROR(stream) "(errmsg disabled)"
+#else
+#define PB_SET_ERROR(stream, msg) (stream->errmsg = (stream)->errmsg ? (stream)->errmsg : (msg))
+#define PB_GET_ERROR(stream) ((stream)->errmsg ? (stream)->errmsg : "(none)")
+#endif
+
+#define PB_RETURN_ERROR(stream, msg) return PB_SET_ERROR(stream, msg), false
+
+#endif
diff --git a/ChattingApp 000/Pods/nanopb/pb_common.c b/ChattingApp 000/Pods/nanopb/pb_common.c
new file mode 100644
index 0000000..4fb7186
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_common.c	
@@ -0,0 +1,97 @@
+/* pb_common.c: Common support functions for pb_encode.c and pb_decode.c.
+ *
+ * 2014 Petteri Aimonen <jpa@kapsi.fi>
+ */
+
+#include "pb_common.h"
+
+bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct)
+{
+    iter->start = fields;
+    iter->pos = fields;
+    iter->required_field_index = 0;
+    iter->dest_struct = dest_struct;
+    iter->pData = (char*)dest_struct + iter->pos->data_offset;
+    iter->pSize = (char*)iter->pData + iter->pos->size_offset;
+    
+    return (iter->pos->tag != 0);
+}
+
+bool pb_field_iter_next(pb_field_iter_t *iter)
+{
+    const pb_field_t *prev_field = iter->pos;
+
+    if (prev_field->tag == 0)
+    {
+        /* Handle empty message types, where the first field is already the terminator.
+         * In other cases, the iter->pos never points to the terminator. */
+        return false;
+    }
+    
+    iter->pos++;
+    
+    if (iter->pos->tag == 0)
+    {
+        /* Wrapped back to beginning, reinitialize */
+        (void)pb_field_iter_begin(iter, iter->start, iter->dest_struct);
+        return false;
+    }
+    else
+    {
+        /* Increment the pointers based on previous field size */
+        size_t prev_size = prev_field->data_size;
+    
+        if (PB_HTYPE(prev_field->type) == PB_HTYPE_ONEOF &&
+            PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF &&
+            iter->pos->data_offset == PB_SIZE_MAX)
+        {
+            /* Don't advance pointers inside unions */
+            return true;
+        }
+        else if (PB_ATYPE(prev_field->type) == PB_ATYPE_STATIC &&
+                 PB_HTYPE(prev_field->type) == PB_HTYPE_REPEATED)
+        {
+            /* In static arrays, the data_size tells the size of a single entry and
+             * array_size is the number of entries */
+            prev_size *= prev_field->array_size;
+        }
+        else if (PB_ATYPE(prev_field->type) == PB_ATYPE_POINTER)
+        {
+            /* Pointer fields always have a constant size in the main structure.
+             * The data_size only applies to the dynamically allocated area. */
+            prev_size = sizeof(void*);
+        }
+
+        if (PB_HTYPE(prev_field->type) == PB_HTYPE_REQUIRED)
+        {
+            /* Count the required fields, in order to check their presence in the
+             * decoder. */
+            iter->required_field_index++;
+        }
+    
+        iter->pData = (char*)iter->pData + prev_size + iter->pos->data_offset;
+        iter->pSize = (char*)iter->pData + iter->pos->size_offset;
+        return true;
+    }
+}
+
+bool pb_field_iter_find(pb_field_iter_t *iter, uint32_t tag)
+{
+    const pb_field_t *start = iter->pos;
+    
+    do {
+        if (iter->pos->tag == tag &&
+            PB_LTYPE(iter->pos->type) != PB_LTYPE_EXTENSION)
+        {
+            /* Found the wanted field */
+            return true;
+        }
+        
+        (void)pb_field_iter_next(iter);
+    } while (iter->pos != start);
+    
+    /* Searched all the way back to start, and found nothing. */
+    return false;
+}
+
+
diff --git a/ChattingApp 000/Pods/nanopb/pb_common.h b/ChattingApp 000/Pods/nanopb/pb_common.h
new file mode 100644
index 0000000..60b3d37
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_common.h	
@@ -0,0 +1,42 @@
+/* pb_common.h: Common support functions for pb_encode.c and pb_decode.c.
+ * These functions are rarely needed by applications directly.
+ */
+
+#ifndef PB_COMMON_H_INCLUDED
+#define PB_COMMON_H_INCLUDED
+
+#include "pb.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Iterator for pb_field_t list */
+struct pb_field_iter_s {
+    const pb_field_t *start;       /* Start of the pb_field_t array */
+    const pb_field_t *pos;         /* Current position of the iterator */
+    unsigned required_field_index; /* Zero-based index that counts only the required fields */
+    void *dest_struct;             /* Pointer to start of the structure */
+    void *pData;                   /* Pointer to current field value */
+    void *pSize;                   /* Pointer to count/has field */
+};
+typedef struct pb_field_iter_s pb_field_iter_t;
+
+/* Initialize the field iterator structure to beginning.
+ * Returns false if the message type is empty. */
+bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct);
+
+/* Advance the iterator to the next field.
+ * Returns false when the iterator wraps back to the first field. */
+bool pb_field_iter_next(pb_field_iter_t *iter);
+
+/* Advance the iterator until it points at a field with the given tag.
+ * Returns false if no such field exists. */
+bool pb_field_iter_find(pb_field_iter_t *iter, uint32_t tag);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
+
diff --git a/ChattingApp 000/Pods/nanopb/pb_decode.c b/ChattingApp 000/Pods/nanopb/pb_decode.c
new file mode 100644
index 0000000..4efe8a3
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_decode.c	
@@ -0,0 +1,1564 @@
+/* pb_decode.c -- decode a protobuf using minimal resources
+ *
+ * 2011 Petteri Aimonen <jpa@kapsi.fi>
+ */
+
+/* Use the GCC warn_unused_result attribute to check that all return values
+ * are propagated correctly. On other compilers and gcc before 3.4.0 just
+ * ignore the annotation.
+ */
+#if !defined(__GNUC__) || ( __GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
+    #define checkreturn
+#else
+    #define checkreturn __attribute__((warn_unused_result))
+#endif
+
+#include "pb.h"
+#include "pb_decode.h"
+#include "pb_common.h"
+
+/**************************************
+ * Declarations internal to this file *
+ **************************************/
+
+typedef bool (*pb_decoder_t)(pb_istream_t *stream, const pb_field_t *field, void *dest) checkreturn;
+
+static bool checkreturn buf_read(pb_istream_t *stream, pb_byte_t *buf, size_t count);
+static bool checkreturn read_raw_value(pb_istream_t *stream, pb_wire_type_t wire_type, pb_byte_t *buf, size_t *size);
+static bool checkreturn decode_static_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
+static bool checkreturn decode_callback_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
+static bool checkreturn decode_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter);
+static void iter_from_extension(pb_field_iter_t *iter, pb_extension_t *extension);
+static bool checkreturn default_extension_decoder(pb_istream_t *stream, pb_extension_t *extension, uint32_t tag, pb_wire_type_t wire_type);
+static bool checkreturn decode_extension(pb_istream_t *stream, uint32_t tag, pb_wire_type_t wire_type, pb_field_iter_t *iter);
+static bool checkreturn find_extension_field(pb_field_iter_t *iter);
+static void pb_field_set_to_default(pb_field_iter_t *iter);
+static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct);
+static bool checkreturn pb_dec_bool(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_decode_varint32_eof(pb_istream_t *stream, uint32_t *dest, bool *eof);
+static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_fixed_length_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_skip_varint(pb_istream_t *stream);
+static bool checkreturn pb_skip_string(pb_istream_t *stream);
+
+#ifdef PB_ENABLE_MALLOC
+static bool checkreturn allocate_field(pb_istream_t *stream, void *pData, size_t data_size, size_t array_size);
+static bool checkreturn pb_release_union_field(pb_istream_t *stream, pb_field_iter_t *iter);
+static void pb_release_single_field(const pb_field_iter_t *iter);
+#endif
+
+#ifdef PB_WITHOUT_64BIT
+#define pb_int64_t int32_t
+#define pb_uint64_t uint32_t
+#else
+#define pb_int64_t int64_t
+#define pb_uint64_t uint64_t
+#endif
+
+/* --- Function pointers to field decoders ---
+ * Order in the array must match pb_action_t LTYPE numbering.
+ */
+static const pb_decoder_t PB_DECODERS[PB_LTYPES_COUNT] = {
+    &pb_dec_bool,
+    &pb_dec_varint,
+    &pb_dec_uvarint,
+    &pb_dec_svarint,
+    &pb_dec_fixed32,
+    &pb_dec_fixed64,
+    
+    &pb_dec_bytes,
+    &pb_dec_string,
+    &pb_dec_submessage,
+    NULL, /* extensions */
+    &pb_dec_fixed_length_bytes
+};
+
+/*******************************
+ * pb_istream_t implementation *
+ *******************************/
+
+static bool checkreturn buf_read(pb_istream_t *stream, pb_byte_t *buf, size_t count)
+{
+    size_t i;
+    const pb_byte_t *source = (const pb_byte_t*)stream->state;
+    stream->state = (pb_byte_t*)stream->state + count;
+    
+    if (buf != NULL)
+    {
+        for (i = 0; i < count; i++)
+            buf[i] = source[i];
+    }
+    
+    return true;
+}
+
+bool checkreturn pb_read(pb_istream_t *stream, pb_byte_t *buf, size_t count)
+{
+    if (count == 0)
+        return true;
+
+#ifndef PB_BUFFER_ONLY
+	if (buf == NULL && stream->callback != buf_read)
+	{
+		/* Skip input bytes */
+		pb_byte_t tmp[16];
+		while (count > 16)
+		{
+			if (!pb_read(stream, tmp, 16))
+				return false;
+			
+			count -= 16;
+		}
+		
+		return pb_read(stream, tmp, count);
+	}
+#endif
+
+    if (stream->bytes_left < count)
+        PB_RETURN_ERROR(stream, "end-of-stream");
+    
+#ifndef PB_BUFFER_ONLY
+    if (!stream->callback(stream, buf, count))
+        PB_RETURN_ERROR(stream, "io error");
+#else
+    if (!buf_read(stream, buf, count))
+        return false;
+#endif
+    
+    stream->bytes_left -= count;
+    return true;
+}
+
+/* Read a single byte from input stream. buf may not be NULL.
+ * This is an optimization for the varint decoding. */
+static bool checkreturn pb_readbyte(pb_istream_t *stream, pb_byte_t *buf)
+{
+    if (stream->bytes_left == 0)
+        PB_RETURN_ERROR(stream, "end-of-stream");
+
+#ifndef PB_BUFFER_ONLY
+    if (!stream->callback(stream, buf, 1))
+        PB_RETURN_ERROR(stream, "io error");
+#else
+    *buf = *(const pb_byte_t*)stream->state;
+    stream->state = (pb_byte_t*)stream->state + 1;
+#endif
+
+    stream->bytes_left--;
+    
+    return true;    
+}
+
+pb_istream_t pb_istream_from_buffer(const pb_byte_t *buf, size_t bufsize)
+{
+    pb_istream_t stream;
+    /* Cast away the const from buf without a compiler error.  We are
+     * careful to use it only in a const manner in the callbacks.
+     */
+    union {
+        void *state;
+        const void *c_state;
+    } state;
+#ifdef PB_BUFFER_ONLY
+    stream.callback = NULL;
+#else
+    stream.callback = &buf_read;
+#endif
+    state.c_state = buf;
+    stream.state = state.state;
+    stream.bytes_left = bufsize;
+#ifndef PB_NO_ERRMSG
+    stream.errmsg = NULL;
+#endif
+    return stream;
+}
+
+/********************
+ * Helper functions *
+ ********************/
+
+static bool checkreturn pb_decode_varint32_eof(pb_istream_t *stream, uint32_t *dest, bool *eof)
+{
+    pb_byte_t byte;
+    uint32_t result;
+    
+    if (!pb_readbyte(stream, &byte))
+    {
+        if (stream->bytes_left == 0)
+        {
+            if (eof)
+            {
+                *eof = true;
+            }
+        }
+
+        return false;
+    }
+    
+    if ((byte & 0x80) == 0)
+    {
+        /* Quick case, 1 byte value */
+        result = byte;
+    }
+    else
+    {
+        /* Multibyte case */
+        uint_fast8_t bitpos = 7;
+        result = byte & 0x7F;
+        
+        do
+        {
+            if (!pb_readbyte(stream, &byte))
+                return false;
+            
+            if (bitpos >= 32)
+            {
+                /* Note: The varint could have trailing 0x80 bytes, or 0xFF for negative. */
+                uint8_t sign_extension = (bitpos < 63) ? 0xFF : 0x01;
+                
+                if ((byte & 0x7F) != 0x00 && ((result >> 31) == 0 || byte != sign_extension))
+                {
+                    PB_RETURN_ERROR(stream, "varint overflow");
+                }
+            }
+            else
+            {
+                result |= (uint32_t)(byte & 0x7F) << bitpos;
+            }
+            bitpos = (uint_fast8_t)(bitpos + 7);
+        } while (byte & 0x80);
+        
+        if (bitpos == 35 && (byte & 0x70) != 0)
+        {
+            /* The last byte was at bitpos=28, so only bottom 4 bits fit. */
+            PB_RETURN_ERROR(stream, "varint overflow");
+        }
+   }
+   
+   *dest = result;
+   return true;
+}
+
+bool checkreturn pb_decode_varint32(pb_istream_t *stream, uint32_t *dest)
+{
+    return pb_decode_varint32_eof(stream, dest, NULL);
+}
+
+#ifndef PB_WITHOUT_64BIT
+bool checkreturn pb_decode_varint(pb_istream_t *stream, uint64_t *dest)
+{
+    pb_byte_t byte;
+    uint_fast8_t bitpos = 0;
+    uint64_t result = 0;
+    
+    do
+    {
+        if (bitpos >= 64)
+            PB_RETURN_ERROR(stream, "varint overflow");
+        
+        if (!pb_readbyte(stream, &byte))
+            return false;
+
+        result |= (uint64_t)(byte & 0x7F) << bitpos;
+        bitpos = (uint_fast8_t)(bitpos + 7);
+    } while (byte & 0x80);
+    
+    *dest = result;
+    return true;
+}
+#endif
+
+bool checkreturn pb_skip_varint(pb_istream_t *stream)
+{
+    pb_byte_t byte;
+    do
+    {
+        if (!pb_read(stream, &byte, 1))
+            return false;
+    } while (byte & 0x80);
+    return true;
+}
+
+bool checkreturn pb_skip_string(pb_istream_t *stream)
+{
+    uint32_t length;
+    if (!pb_decode_varint32(stream, &length))
+        return false;
+    
+    return pb_read(stream, NULL, length);
+}
+
+bool checkreturn pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, uint32_t *tag, bool *eof)
+{
+    uint32_t temp;
+    *eof = false;
+    *wire_type = (pb_wire_type_t) 0;
+    *tag = 0;
+    
+    if (!pb_decode_varint32_eof(stream, &temp, eof))
+    {
+        return false;
+    }
+    
+    if (temp == 0)
+    {
+        *eof = true; /* Special feature: allow 0-terminated messages. */
+        return false;
+    }
+    
+    *tag = temp >> 3;
+    *wire_type = (pb_wire_type_t)(temp & 7);
+    return true;
+}
+
+bool checkreturn pb_skip_field(pb_istream_t *stream, pb_wire_type_t wire_type)
+{
+    switch (wire_type)
+    {
+        case PB_WT_VARINT: return pb_skip_varint(stream);
+        case PB_WT_64BIT: return pb_read(stream, NULL, 8);
+        case PB_WT_STRING: return pb_skip_string(stream);
+        case PB_WT_32BIT: return pb_read(stream, NULL, 4);
+        default: PB_RETURN_ERROR(stream, "invalid wire_type");
+    }
+}
+
+/* Read a raw value to buffer, for the purpose of passing it to callback as
+ * a substream. Size is maximum size on call, and actual size on return.
+ */
+static bool checkreturn read_raw_value(pb_istream_t *stream, pb_wire_type_t wire_type, pb_byte_t *buf, size_t *size)
+{
+    size_t max_size = *size;
+    switch (wire_type)
+    {
+        case PB_WT_VARINT:
+            *size = 0;
+            do
+            {
+                (*size)++;
+                if (*size > max_size) return false;
+                if (!pb_read(stream, buf, 1)) return false;
+            } while (*buf++ & 0x80);
+            return true;
+            
+        case PB_WT_64BIT:
+            *size = 8;
+            return pb_read(stream, buf, 8);
+        
+        case PB_WT_32BIT:
+            *size = 4;
+            return pb_read(stream, buf, 4);
+        
+        case PB_WT_STRING:
+            /* Calling read_raw_value with a PB_WT_STRING is an error.
+             * Explicitly handle this case and fallthrough to default to avoid
+             * compiler warnings.
+             */
+
+        default: PB_RETURN_ERROR(stream, "invalid wire_type");
+    }
+}
+
+/* Decode string length from stream and return a substream with limited length.
+ * Remember to close the substream using pb_close_string_substream().
+ */
+bool checkreturn pb_make_string_substream(pb_istream_t *stream, pb_istream_t *substream)
+{
+    uint32_t size;
+    if (!pb_decode_varint32(stream, &size))
+        return false;
+    
+    *substream = *stream;
+    if (substream->bytes_left < size)
+        PB_RETURN_ERROR(stream, "parent stream too short");
+    
+    substream->bytes_left = size;
+    stream->bytes_left -= size;
+    return true;
+}
+
+bool checkreturn pb_close_string_substream(pb_istream_t *stream, pb_istream_t *substream)
+{
+    if (substream->bytes_left) {
+        if (!pb_read(substream, NULL, substream->bytes_left))
+            return false;
+    }
+
+    stream->state = substream->state;
+
+#ifndef PB_NO_ERRMSG
+    stream->errmsg = substream->errmsg;
+#endif
+    return true;
+}
+
+/*************************
+ * Decode a single field *
+ *************************/
+
+static bool checkreturn decode_static_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
+{
+    pb_type_t type;
+    pb_decoder_t func;
+    
+    type = iter->pos->type;
+    func = PB_DECODERS[PB_LTYPE(type)];
+
+    switch (PB_HTYPE(type))
+    {
+        case PB_HTYPE_REQUIRED:
+            return func(stream, iter->pos, iter->pData);
+            
+        case PB_HTYPE_OPTIONAL:
+            if (iter->pSize != iter->pData)
+                *(bool*)iter->pSize = true;
+            return func(stream, iter->pos, iter->pData);
+    
+        case PB_HTYPE_REPEATED:
+            if (wire_type == PB_WT_STRING
+                && PB_LTYPE(type) <= PB_LTYPE_LAST_PACKABLE)
+            {
+                /* Packed array */
+                bool status = true;
+                pb_size_t *size = (pb_size_t*)iter->pSize;
+
+                pb_istream_t substream;
+                if (!pb_make_string_substream(stream, &substream))
+                    return false;
+
+                while (substream.bytes_left > 0 && *size < iter->pos->array_size)
+                {
+                    void *pItem = (char*)iter->pData + iter->pos->data_size * (*size);
+                    if (!func(&substream, iter->pos, pItem))
+                    {
+                        status = false;
+                        break;
+                    }
+                    (*size)++;
+                }
+
+                if (substream.bytes_left != 0)
+                    PB_RETURN_ERROR(stream, "array overflow");
+                if (!pb_close_string_substream(stream, &substream))
+                    return false;
+
+                return status;
+            }
+            else
+            {
+                /* Repeated field */
+                pb_size_t *size = (pb_size_t*)iter->pSize;
+                char *pItem = (char*)iter->pData + iter->pos->data_size * (*size);
+
+                if ((*size)++ >= iter->pos->array_size)
+                    PB_RETURN_ERROR(stream, "array overflow");
+
+                return func(stream, iter->pos, pItem);
+            }
+
+        case PB_HTYPE_ONEOF:
+            if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE &&
+                *(pb_size_t*)iter->pSize != iter->pos->tag)
+            {
+                /* We memset to zero so that any callbacks are set to NULL.
+                 * This is because the callbacks might otherwise have values
+                 * from some other union field. */
+                memset(iter->pData, 0, iter->pos->data_size);
+                pb_message_set_to_defaults((const pb_field_t*)iter->pos->ptr, iter->pData);
+            }
+            *(pb_size_t*)iter->pSize = iter->pos->tag;
+
+            return func(stream, iter->pos, iter->pData);
+
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+}
+
+#ifdef PB_ENABLE_MALLOC
+/* Allocate storage for the field and store the pointer at iter->pData.
+ * array_size is the number of entries to reserve in an array.
+ * Zero size is not allowed, use pb_free() for releasing.
+ */
+static bool checkreturn allocate_field(pb_istream_t *stream, void *pData, size_t data_size, size_t array_size)
+{    
+    void *ptr = *(void**)pData;
+    
+    if (data_size == 0 || array_size == 0)
+        PB_RETURN_ERROR(stream, "invalid size");
+    
+#ifdef __AVR__
+    /* Workaround for AVR libc bug 53284: http://savannah.nongnu.org/bugs/?53284
+     * Realloc to size of 1 byte can cause corruption of the malloc structures.
+     */
+    if (data_size == 1 && array_size == 1)
+    {
+        data_size = 2;
+    }
+#endif
+
+    /* Check for multiplication overflows.
+     * This code avoids the costly division if the sizes are small enough.
+     * Multiplication is safe as long as only half of bits are set
+     * in either multiplicand.
+     */
+    {
+        const size_t check_limit = (size_t)1 << (sizeof(size_t) * 4);
+        if (data_size >= check_limit || array_size >= check_limit)
+        {
+            const size_t size_max = (size_t)-1;
+            if (size_max / array_size < data_size)
+            {
+                PB_RETURN_ERROR(stream, "size too large");
+            }
+        }
+    }
+    
+    /* Allocate new or expand previous allocation */
+    /* Note: on failure the old pointer will remain in the structure,
+     * the message must be freed by caller also on error return. */
+    ptr = pb_realloc(ptr, array_size * data_size);
+    if (ptr == NULL)
+        PB_RETURN_ERROR(stream, "realloc failed");
+    
+    *(void**)pData = ptr;
+    return true;
+}
+
+/* Clear a newly allocated item in case it contains a pointer, or is a submessage. */
+static void initialize_pointer_field(void *pItem, pb_field_iter_t *iter)
+{
+    if (PB_LTYPE(iter->pos->type) == PB_LTYPE_STRING ||
+        PB_LTYPE(iter->pos->type) == PB_LTYPE_BYTES)
+    {
+        *(void**)pItem = NULL;
+    }
+    else if (PB_LTYPE(iter->pos->type) == PB_LTYPE_SUBMESSAGE)
+    {
+        /* We memset to zero so that any callbacks are set to NULL.
+         * Then set any default values. */
+        memset(pItem, 0, iter->pos->data_size);
+        pb_message_set_to_defaults((const pb_field_t *) iter->pos->ptr, pItem);
+    }
+}
+#endif
+
+static bool checkreturn decode_pointer_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
+{
+#ifndef PB_ENABLE_MALLOC
+    PB_UNUSED(wire_type);
+    PB_UNUSED(iter);
+    PB_RETURN_ERROR(stream, "no malloc support");
+#else
+    pb_type_t type;
+    pb_decoder_t func;
+    
+    type = iter->pos->type;
+    func = PB_DECODERS[PB_LTYPE(type)];
+    
+    switch (PB_HTYPE(type))
+    {
+        case PB_HTYPE_REQUIRED:
+        case PB_HTYPE_OPTIONAL:
+        case PB_HTYPE_ONEOF:
+            if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE &&
+                *(void**)iter->pData != NULL)
+            {
+                /* Duplicate field, have to release the old allocation first. */
+                pb_release_single_field(iter);
+            }
+        
+            if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
+            {
+                *(pb_size_t*)iter->pSize = iter->pos->tag;
+            }
+
+            if (PB_LTYPE(type) == PB_LTYPE_STRING ||
+                PB_LTYPE(type) == PB_LTYPE_BYTES)
+            {
+                return func(stream, iter->pos, iter->pData);
+            }
+            else
+            {
+                if (!allocate_field(stream, iter->pData, iter->pos->data_size, 1))
+                    return false;
+                
+                initialize_pointer_field(*(void**)iter->pData, iter);
+                return func(stream, iter->pos, *(void**)iter->pData);
+            }
+    
+        case PB_HTYPE_REPEATED:
+            if (wire_type == PB_WT_STRING
+                && PB_LTYPE(type) <= PB_LTYPE_LAST_PACKABLE)
+            {
+                /* Packed array, multiple items come in at once. */
+                bool status = true;
+                pb_size_t *size = (pb_size_t*)iter->pSize;
+                size_t allocated_size = *size;
+                void *pItem;
+                pb_istream_t substream;
+                
+                if (!pb_make_string_substream(stream, &substream))
+                    return false;
+                
+                while (substream.bytes_left)
+                {
+                    if (*size == PB_SIZE_MAX)
+                    {
+#ifndef PB_NO_ERRMSG
+                        stream->errmsg = "too many array entries";
+#endif
+                        status = false;
+                        break;
+                    }
+
+                    if ((size_t)*size + 1 > allocated_size)
+                    {
+                        /* Allocate more storage. This tries to guess the
+                         * number of remaining entries. Round the division
+                         * upwards. */
+                        size_t remain = (substream.bytes_left - 1) / iter->pos->data_size + 1;
+                        if (remain < PB_SIZE_MAX - allocated_size)
+                            allocated_size += remain;
+                        else
+                            allocated_size += 1;
+                        
+                        if (!allocate_field(&substream, iter->pData, iter->pos->data_size, allocated_size))
+                        {
+                            status = false;
+                            break;
+                        }
+                    }
+
+                    /* Decode the array entry */
+                    pItem = *(char**)iter->pData + iter->pos->data_size * (*size);
+                    initialize_pointer_field(pItem, iter);
+                    if (!func(&substream, iter->pos, pItem))
+                    {
+                        status = false;
+                        break;
+                    }
+                    
+                    (*size)++;
+                }
+                if (!pb_close_string_substream(stream, &substream))
+                    return false;
+                
+                return status;
+            }
+            else
+            {
+                /* Normal repeated field, i.e. only one item at a time. */
+                pb_size_t *size = (pb_size_t*)iter->pSize;
+                void *pItem;
+                
+                if (*size == PB_SIZE_MAX)
+                    PB_RETURN_ERROR(stream, "too many array entries");
+                
+                if (!allocate_field(stream, iter->pData, iter->pos->data_size, (size_t)(*size + 1)))
+                    return false;
+            
+                pItem = *(char**)iter->pData + iter->pos->data_size * (*size);
+                (*size)++;
+                initialize_pointer_field(pItem, iter);
+                return func(stream, iter->pos, pItem);
+            }
+
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+#endif
+}
+
+static bool checkreturn decode_callback_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
+{
+    pb_callback_t *pCallback = (pb_callback_t*)iter->pData;
+#ifdef PB_OLD_CALLBACK_STYLE
+    void *arg;
+#else
+    void **arg;
+#endif
+    
+    if (pCallback == NULL || pCallback->funcs.decode == NULL)
+        return pb_skip_field(stream, wire_type);
+
+#ifdef PB_OLD_CALLBACK_STYLE
+    arg = pCallback->arg;
+#else
+    arg = &(pCallback->arg);
+#endif
+    
+    if (wire_type == PB_WT_STRING)
+    {
+        pb_istream_t substream;
+        
+        if (!pb_make_string_substream(stream, &substream))
+            return false;
+        
+        do
+        {
+            if (!pCallback->funcs.decode(&substream, iter->pos, arg))
+                PB_RETURN_ERROR(stream, "callback failed");
+        } while (substream.bytes_left);
+        
+        if (!pb_close_string_substream(stream, &substream))
+            return false;
+
+        return true;
+    }
+    else
+    {
+        /* Copy the single scalar value to stack.
+         * This is required so that we can limit the stream length,
+         * which in turn allows to use same callback for packed and
+         * not-packed fields. */
+        pb_istream_t substream;
+        pb_byte_t buffer[10];
+        size_t size = sizeof(buffer);
+        
+        if (!read_raw_value(stream, wire_type, buffer, &size))
+            return false;
+        substream = pb_istream_from_buffer(buffer, size);
+        
+        return pCallback->funcs.decode(&substream, iter->pos, arg);
+    }
+}
+
+static bool checkreturn decode_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iter_t *iter)
+{
+#ifdef PB_ENABLE_MALLOC
+    /* When decoding an oneof field, check if there is old data that must be
+     * released first. */
+    if (PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF)
+    {
+        if (!pb_release_union_field(stream, iter))
+            return false;
+    }
+#endif
+
+    switch (PB_ATYPE(iter->pos->type))
+    {
+        case PB_ATYPE_STATIC:
+            return decode_static_field(stream, wire_type, iter);
+        
+        case PB_ATYPE_POINTER:
+            return decode_pointer_field(stream, wire_type, iter);
+        
+        case PB_ATYPE_CALLBACK:
+            return decode_callback_field(stream, wire_type, iter);
+        
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+}
+
+static void iter_from_extension(pb_field_iter_t *iter, pb_extension_t *extension)
+{
+    /* Fake a field iterator for the extension field.
+     * It is not actually safe to advance this iterator, but decode_field
+     * will not even try to. */
+    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
+    (void)pb_field_iter_begin(iter, field, extension->dest);
+    iter->pData = extension->dest;
+    iter->pSize = &extension->found;
+    
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+    {
+        /* For pointer extensions, the pointer is stored directly
+         * in the extension structure. This avoids having an extra
+         * indirection. */
+        iter->pData = &extension->dest;
+    }
+}
+
+/* Default handler for extension fields. Expects a pb_field_t structure
+ * in extension->type->arg. */
+static bool checkreturn default_extension_decoder(pb_istream_t *stream,
+    pb_extension_t *extension, uint32_t tag, pb_wire_type_t wire_type)
+{
+    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
+    pb_field_iter_t iter;
+    
+    if (field->tag != tag)
+        return true;
+    
+    iter_from_extension(&iter, extension);
+    extension->found = true;
+    return decode_field(stream, wire_type, &iter);
+}
+
+/* Try to decode an unknown field as an extension field. Tries each extension
+ * decoder in turn, until one of them handles the field or loop ends. */
+static bool checkreturn decode_extension(pb_istream_t *stream,
+    uint32_t tag, pb_wire_type_t wire_type, pb_field_iter_t *iter)
+{
+    pb_extension_t *extension = *(pb_extension_t* const *)iter->pData;
+    size_t pos = stream->bytes_left;
+    
+    while (extension != NULL && pos == stream->bytes_left)
+    {
+        bool status;
+        if (extension->type->decode)
+            status = extension->type->decode(stream, extension, tag, wire_type);
+        else
+            status = default_extension_decoder(stream, extension, tag, wire_type);
+
+        if (!status)
+            return false;
+        
+        extension = extension->next;
+    }
+    
+    return true;
+}
+
+/* Step through the iterator until an extension field is found or until all
+ * entries have been checked. There can be only one extension field per
+ * message. Returns false if no extension field is found. */
+static bool checkreturn find_extension_field(pb_field_iter_t *iter)
+{
+    const pb_field_t *start = iter->pos;
+    
+    do {
+        if (PB_LTYPE(iter->pos->type) == PB_LTYPE_EXTENSION)
+            return true;
+        (void)pb_field_iter_next(iter);
+    } while (iter->pos != start);
+    
+    return false;
+}
+
+/* Initialize message fields to default values, recursively */
+static void pb_field_set_to_default(pb_field_iter_t *iter)
+{
+    pb_type_t type;
+    type = iter->pos->type;
+    
+    if (PB_LTYPE(type) == PB_LTYPE_EXTENSION)
+    {
+        pb_extension_t *ext = *(pb_extension_t* const *)iter->pData;
+        while (ext != NULL)
+        {
+            pb_field_iter_t ext_iter;
+            ext->found = false;
+            iter_from_extension(&ext_iter, ext);
+            pb_field_set_to_default(&ext_iter);
+            ext = ext->next;
+        }
+    }
+    else if (PB_ATYPE(type) == PB_ATYPE_STATIC)
+    {
+        bool init_data = true;
+        if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL && iter->pSize != iter->pData)
+        {
+            /* Set has_field to false. Still initialize the optional field
+             * itself also. */
+            *(bool*)iter->pSize = false;
+        }
+        else if (PB_HTYPE(type) == PB_HTYPE_REPEATED ||
+                 PB_HTYPE(type) == PB_HTYPE_ONEOF)
+        {
+            /* REPEATED: Set array count to 0, no need to initialize contents.
+               ONEOF: Set which_field to 0. */
+            *(pb_size_t*)iter->pSize = 0;
+            init_data = false;
+        }
+
+        if (init_data)
+        {
+            if (PB_LTYPE(iter->pos->type) == PB_LTYPE_SUBMESSAGE)
+            {
+                /* Initialize submessage to defaults */
+                pb_message_set_to_defaults((const pb_field_t *) iter->pos->ptr, iter->pData);
+            }
+            else if (iter->pos->ptr != NULL)
+            {
+                /* Initialize to default value */
+                memcpy(iter->pData, iter->pos->ptr, iter->pos->data_size);
+            }
+            else
+            {
+                /* Initialize to zeros */
+                memset(iter->pData, 0, iter->pos->data_size);
+            }
+        }
+    }
+    else if (PB_ATYPE(type) == PB_ATYPE_POINTER)
+    {
+        /* Initialize the pointer to NULL. */
+        *(void**)iter->pData = NULL;
+        
+        /* Initialize array count to 0. */
+        if (PB_HTYPE(type) == PB_HTYPE_REPEATED ||
+            PB_HTYPE(type) == PB_HTYPE_ONEOF)
+        {
+            *(pb_size_t*)iter->pSize = 0;
+        }
+    }
+    else if (PB_ATYPE(type) == PB_ATYPE_CALLBACK)
+    {
+        /* Don't overwrite callback */
+    }
+}
+
+static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct)
+{
+    pb_field_iter_t iter;
+
+    if (!pb_field_iter_begin(&iter, fields, dest_struct))
+        return; /* Empty message type */
+    
+    do
+    {
+        pb_field_set_to_default(&iter);
+    } while (pb_field_iter_next(&iter));
+}
+
+/*********************
+ * Decode all fields *
+ *********************/
+
+bool checkreturn pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+    uint32_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 31) / 32] = {0, 0};
+    const uint32_t allbits = ~(uint32_t)0;
+    uint32_t extension_range_start = 0;
+    pb_field_iter_t iter;
+
+    /* 'fixed_count_field' and 'fixed_count_size' track position of a repeated fixed
+     * count field. This can only handle _one_ repeated fixed count field that
+     * is unpacked and unordered among other (non repeated fixed count) fields.
+     */
+    const pb_field_t *fixed_count_field = NULL;
+    pb_size_t fixed_count_size = 0;
+
+    /* Return value ignored, as empty message types will be correctly handled by
+     * pb_field_iter_find() anyway. */
+    (void)pb_field_iter_begin(&iter, fields, dest_struct);
+
+    while (stream->bytes_left)
+    {
+        uint32_t tag;
+        pb_wire_type_t wire_type;
+        bool eof;
+
+        if (!pb_decode_tag(stream, &wire_type, &tag, &eof))
+        {
+            if (eof)
+                break;
+            else
+                return false;
+        }
+
+        if (!pb_field_iter_find(&iter, tag))
+        {
+            /* No match found, check if it matches an extension. */
+            if (tag >= extension_range_start)
+            {
+                if (!find_extension_field(&iter))
+                    extension_range_start = (uint32_t)-1;
+                else
+                    extension_range_start = iter.pos->tag;
+
+                if (tag >= extension_range_start)
+                {
+                    size_t pos = stream->bytes_left;
+
+                    if (!decode_extension(stream, tag, wire_type, &iter))
+                        return false;
+
+                    if (pos != stream->bytes_left)
+                    {
+                        /* The field was handled */
+                        continue;
+                    }
+                }
+            }
+
+            /* No match found, skip data */
+            if (!pb_skip_field(stream, wire_type))
+                return false;
+            continue;
+        }
+
+        /* If a repeated fixed count field was found, get size from
+         * 'fixed_count_field' as there is no counter contained in the struct.
+         */
+        if (PB_HTYPE(iter.pos->type) == PB_HTYPE_REPEATED
+            && iter.pSize == iter.pData)
+        {
+            if (fixed_count_field != iter.pos) {
+                /* If the new fixed count field does not match the previous one,
+                 * check that the previous one is NULL or that it finished
+                 * receiving all the expected data.
+                 */
+                if (fixed_count_field != NULL &&
+                    fixed_count_size != fixed_count_field->array_size)
+                {
+                    PB_RETURN_ERROR(stream, "wrong size for fixed count field");
+                }
+
+                fixed_count_field = iter.pos;
+                fixed_count_size = 0;
+            }
+
+            iter.pSize = &fixed_count_size;
+        }
+
+        if (PB_HTYPE(iter.pos->type) == PB_HTYPE_REQUIRED
+            && iter.required_field_index < PB_MAX_REQUIRED_FIELDS)
+        {
+            uint32_t tmp = ((uint32_t)1 << (iter.required_field_index & 31));
+            fields_seen[iter.required_field_index >> 5] |= tmp;
+        }
+
+        if (!decode_field(stream, wire_type, &iter))
+            return false;
+    }
+
+    /* Check that all elements of the last decoded fixed count field were present. */
+    if (fixed_count_field != NULL &&
+        fixed_count_size != fixed_count_field->array_size)
+    {
+        PB_RETURN_ERROR(stream, "wrong size for fixed count field");
+    }
+
+    /* Check that all required fields were present. */
+    {
+        /* First figure out the number of required fields by
+         * seeking to the end of the field array. Usually we
+         * are already close to end after decoding.
+         */
+        unsigned req_field_count;
+        pb_type_t last_type;
+        unsigned i;
+        do {
+            req_field_count = iter.required_field_index;
+            last_type = iter.pos->type;
+        } while (pb_field_iter_next(&iter));
+        
+        /* Fixup if last field was also required. */
+        if (PB_HTYPE(last_type) == PB_HTYPE_REQUIRED && iter.pos->tag != 0)
+            req_field_count++;
+        
+        if (req_field_count > PB_MAX_REQUIRED_FIELDS)
+            req_field_count = PB_MAX_REQUIRED_FIELDS;
+
+        if (req_field_count > 0)
+        {
+            /* Check the whole words */
+            for (i = 0; i < (req_field_count >> 5); i++)
+            {
+                if (fields_seen[i] != allbits)
+                    PB_RETURN_ERROR(stream, "missing required field");
+            }
+            
+            /* Check the remaining bits (if any) */
+            if ((req_field_count & 31) != 0)
+            {
+                if (fields_seen[req_field_count >> 5] !=
+                    (allbits >> (32 - (req_field_count & 31))))
+                {
+                    PB_RETURN_ERROR(stream, "missing required field");
+                }
+            }
+        }
+    }
+    
+    return true;
+}
+
+bool checkreturn pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+    bool status;
+    pb_message_set_to_defaults(fields, dest_struct);
+    status = pb_decode_noinit(stream, fields, dest_struct);
+    
+#ifdef PB_ENABLE_MALLOC
+    if (!status)
+        pb_release(fields, dest_struct);
+#endif
+    
+    return status;
+}
+
+bool pb_decode_delimited_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+    pb_istream_t substream;
+    bool status;
+
+    if (!pb_make_string_substream(stream, &substream))
+        return false;
+
+    status = pb_decode_noinit(&substream, fields, dest_struct);
+
+    if (!pb_close_string_substream(stream, &substream))
+        return false;
+    return status;
+}
+
+bool pb_decode_delimited(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+    pb_istream_t substream;
+    bool status;
+    
+    if (!pb_make_string_substream(stream, &substream))
+        return false;
+    
+    status = pb_decode(&substream, fields, dest_struct);
+
+    if (!pb_close_string_substream(stream, &substream))
+        return false;
+    return status;
+}
+
+bool pb_decode_nullterminated(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
+{
+    /* This behaviour will be separated in nanopb-0.4.0, see issue #278. */
+    return pb_decode(stream, fields, dest_struct);
+}
+
+#ifdef PB_ENABLE_MALLOC
+/* Given an oneof field, if there has already been a field inside this oneof,
+ * release it before overwriting with a different one. */
+static bool pb_release_union_field(pb_istream_t *stream, pb_field_iter_t *iter)
+{
+    pb_size_t old_tag = *(pb_size_t*)iter->pSize; /* Previous which_ value */
+    pb_size_t new_tag = iter->pos->tag; /* New which_ value */
+
+    if (old_tag == 0)
+        return true; /* Ok, no old data in union */
+
+    if (old_tag == new_tag)
+        return true; /* Ok, old data is of same type => merge */
+
+    /* Release old data. The find can fail if the message struct contains
+     * invalid data. */
+    if (!pb_field_iter_find(iter, old_tag))
+        PB_RETURN_ERROR(stream, "invalid union tag");
+
+    pb_release_single_field(iter);
+
+    /* Restore iterator to where it should be.
+     * This shouldn't fail unless the pb_field_t structure is corrupted. */
+    if (!pb_field_iter_find(iter, new_tag))
+        PB_RETURN_ERROR(stream, "iterator error");
+
+    if (PB_ATYPE(iter->pos->type) == PB_ATYPE_POINTER)
+    {
+        /* Initialize the pointer to NULL to make sure it is valid
+         * even in case of error return. */
+        *(void**)iter->pData = NULL;
+    }
+
+    return true;
+}
+
+static void pb_release_single_field(const pb_field_iter_t *iter)
+{
+    pb_type_t type;
+    type = iter->pos->type;
+
+    if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
+    {
+        if (*(pb_size_t*)iter->pSize != iter->pos->tag)
+            return; /* This is not the current field in the union */
+    }
+
+    /* Release anything contained inside an extension or submsg.
+     * This has to be done even if the submsg itself is statically
+     * allocated. */
+    if (PB_LTYPE(type) == PB_LTYPE_EXTENSION)
+    {
+        /* Release fields from all extensions in the linked list */
+        pb_extension_t *ext = *(pb_extension_t**)iter->pData;
+        while (ext != NULL)
+        {
+            pb_field_iter_t ext_iter;
+            iter_from_extension(&ext_iter, ext);
+            pb_release_single_field(&ext_iter);
+            ext = ext->next;
+        }
+    }
+    else if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE && PB_ATYPE(type) != PB_ATYPE_CALLBACK)
+    {
+        /* Release fields in submessage or submsg array */
+        void *pItem = iter->pData;
+        pb_size_t count = 1;
+        
+        if (PB_ATYPE(type) == PB_ATYPE_POINTER)
+        {
+            pItem = *(void**)iter->pData;
+        }
+        
+        if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
+        {
+            if (PB_ATYPE(type) == PB_ATYPE_STATIC && iter->pSize == iter->pData) {
+                /* No _count field so use size of the array */
+                count = iter->pos->array_size;
+            } else {
+                count = *(pb_size_t*)iter->pSize;
+            }
+
+            if (PB_ATYPE(type) == PB_ATYPE_STATIC && count > iter->pos->array_size)
+            {
+                /* Protect against corrupted _count fields */
+                count = iter->pos->array_size;
+            }
+        }
+        
+        if (pItem)
+        {
+            while (count--)
+            {
+                pb_release((const pb_field_t*)iter->pos->ptr, pItem);
+                pItem = (char*)pItem + iter->pos->data_size;
+            }
+        }
+    }
+    
+    if (PB_ATYPE(type) == PB_ATYPE_POINTER)
+    {
+        if (PB_HTYPE(type) == PB_HTYPE_REPEATED &&
+            (PB_LTYPE(type) == PB_LTYPE_STRING ||
+             PB_LTYPE(type) == PB_LTYPE_BYTES))
+        {
+            /* Release entries in repeated string or bytes array */
+            void **pItem = *(void***)iter->pData;
+            pb_size_t count = *(pb_size_t*)iter->pSize;
+            while (count--)
+            {
+                pb_free(*pItem);
+                *pItem++ = NULL;
+            }
+        }
+        
+        if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
+        {
+            /* We are going to release the array, so set the size to 0 */
+            *(pb_size_t*)iter->pSize = 0;
+        }
+        
+        /* Release main item */
+        pb_free(*(void**)iter->pData);
+        *(void**)iter->pData = NULL;
+    }
+}
+
+void pb_release(const pb_field_t fields[], void *dest_struct)
+{
+    pb_field_iter_t iter;
+    
+    if (!dest_struct)
+        return; /* Ignore NULL pointers, similar to free() */
+
+    if (!pb_field_iter_begin(&iter, fields, dest_struct))
+        return; /* Empty message type */
+    
+    do
+    {
+        pb_release_single_field(&iter);
+    } while (pb_field_iter_next(&iter));
+}
+#endif
+
+/* Field decoders */
+
+bool pb_decode_bool(pb_istream_t *stream, bool *dest)
+{
+    return pb_dec_bool(stream, NULL, (void*)dest);
+}
+
+bool pb_decode_svarint(pb_istream_t *stream, pb_int64_t *dest)
+{
+    pb_uint64_t value;
+    if (!pb_decode_varint(stream, &value))
+        return false;
+    
+    if (value & 1)
+        *dest = (pb_int64_t)(~(value >> 1));
+    else
+        *dest = (pb_int64_t)(value >> 1);
+    
+    return true;
+}
+
+bool pb_decode_fixed32(pb_istream_t *stream, void *dest)
+{
+    pb_byte_t bytes[4];
+
+    if (!pb_read(stream, bytes, 4))
+        return false;
+    
+    *(uint32_t*)dest = ((uint32_t)bytes[0] << 0) |
+                       ((uint32_t)bytes[1] << 8) |
+                       ((uint32_t)bytes[2] << 16) |
+                       ((uint32_t)bytes[3] << 24);
+    return true;
+}
+
+#ifndef PB_WITHOUT_64BIT
+bool pb_decode_fixed64(pb_istream_t *stream, void *dest)
+{
+    pb_byte_t bytes[8];
+
+    if (!pb_read(stream, bytes, 8))
+        return false;
+    
+    *(uint64_t*)dest = ((uint64_t)bytes[0] << 0) |
+                       ((uint64_t)bytes[1] << 8) |
+                       ((uint64_t)bytes[2] << 16) |
+                       ((uint64_t)bytes[3] << 24) |
+                       ((uint64_t)bytes[4] << 32) |
+                       ((uint64_t)bytes[5] << 40) |
+                       ((uint64_t)bytes[6] << 48) |
+                       ((uint64_t)bytes[7] << 56);
+    
+    return true;
+}
+#endif
+
+static bool checkreturn pb_dec_bool(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    uint32_t value;
+    PB_UNUSED(field);
+    if (!pb_decode_varint32(stream, &value))
+        return false;
+
+    *(bool*)dest = (value != 0);
+    return true;
+}
+
+static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    pb_uint64_t value;
+    pb_int64_t svalue;
+    pb_int64_t clamped;
+    if (!pb_decode_varint(stream, &value))
+        return false;
+    
+    /* See issue 97: Google's C++ protobuf allows negative varint values to
+     * be cast as int32_t, instead of the int64_t that should be used when
+     * encoding. Previous nanopb versions had a bug in encoding. In order to
+     * not break decoding of such messages, we cast <=32 bit fields to
+     * int32_t first to get the sign correct.
+     */
+    if (field->data_size == sizeof(pb_int64_t))
+        svalue = (pb_int64_t)value;
+    else
+        svalue = (int32_t)value;
+
+    /* Cast to the proper field size, while checking for overflows */
+    if (field->data_size == sizeof(pb_int64_t))
+        clamped = *(pb_int64_t*)dest = svalue;
+    else if (field->data_size == sizeof(int32_t))
+        clamped = *(int32_t*)dest = (int32_t)svalue;
+    else if (field->data_size == sizeof(int_least16_t))
+        clamped = *(int_least16_t*)dest = (int_least16_t)svalue;
+    else if (field->data_size == sizeof(int_least8_t))
+        clamped = *(int_least8_t*)dest = (int_least8_t)svalue;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+
+    if (clamped != svalue)
+        PB_RETURN_ERROR(stream, "integer too large");
+    
+    return true;
+}
+
+static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    pb_uint64_t value, clamped;
+    if (!pb_decode_varint(stream, &value))
+        return false;
+    
+    /* Cast to the proper field size, while checking for overflows */
+    if (field->data_size == sizeof(pb_uint64_t))
+        clamped = *(pb_uint64_t*)dest = value;
+    else if (field->data_size == sizeof(uint32_t))
+        clamped = *(uint32_t*)dest = (uint32_t)value;
+    else if (field->data_size == sizeof(uint_least16_t))
+        clamped = *(uint_least16_t*)dest = (uint_least16_t)value;
+    else if (field->data_size == sizeof(uint_least8_t))
+        clamped = *(uint_least8_t*)dest = (uint_least8_t)value;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+    
+    if (clamped != value)
+        PB_RETURN_ERROR(stream, "integer too large");
+
+    return true;
+}
+
+static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    pb_int64_t value, clamped;
+    if (!pb_decode_svarint(stream, &value))
+        return false;
+    
+    /* Cast to the proper field size, while checking for overflows */
+    if (field->data_size == sizeof(pb_int64_t))
+        clamped = *(pb_int64_t*)dest = value;
+    else if (field->data_size == sizeof(int32_t))
+        clamped = *(int32_t*)dest = (int32_t)value;
+    else if (field->data_size == sizeof(int_least16_t))
+        clamped = *(int_least16_t*)dest = (int_least16_t)value;
+    else if (field->data_size == sizeof(int_least8_t))
+        clamped = *(int_least8_t*)dest = (int_least8_t)value;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+
+    if (clamped != value)
+        PB_RETURN_ERROR(stream, "integer too large");
+    
+    return true;
+}
+
+static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    PB_UNUSED(field);
+    return pb_decode_fixed32(stream, dest);
+}
+
+static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    PB_UNUSED(field);
+#ifndef PB_WITHOUT_64BIT
+    return pb_decode_fixed64(stream, dest);
+#else
+    PB_UNUSED(dest);
+    PB_RETURN_ERROR(stream, "no 64bit support");
+#endif
+}
+
+static bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    uint32_t size;
+    size_t alloc_size;
+    pb_bytes_array_t *bdest;
+    
+    if (!pb_decode_varint32(stream, &size))
+        return false;
+    
+    if (size > PB_SIZE_MAX)
+        PB_RETURN_ERROR(stream, "bytes overflow");
+    
+    alloc_size = PB_BYTES_ARRAY_T_ALLOCSIZE(size);
+    if (size > alloc_size)
+        PB_RETURN_ERROR(stream, "size too large");
+    
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+    {
+#ifndef PB_ENABLE_MALLOC
+        PB_RETURN_ERROR(stream, "no malloc support");
+#else
+        if (stream->bytes_left < size)
+            PB_RETURN_ERROR(stream, "end-of-stream");
+
+        if (!allocate_field(stream, dest, alloc_size, 1))
+            return false;
+        bdest = *(pb_bytes_array_t**)dest;
+#endif
+    }
+    else
+    {
+        if (alloc_size > field->data_size)
+            PB_RETURN_ERROR(stream, "bytes overflow");
+        bdest = (pb_bytes_array_t*)dest;
+    }
+
+    bdest->size = (pb_size_t)size;
+    return pb_read(stream, bdest->bytes, size);
+}
+
+static bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    uint32_t size;
+    size_t alloc_size;
+    bool status;
+    if (!pb_decode_varint32(stream, &size))
+        return false;
+    
+    /* Space for null terminator */
+    alloc_size = size + 1;
+    
+    if (alloc_size < size)
+        PB_RETURN_ERROR(stream, "size too large");
+    
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+    {
+#ifndef PB_ENABLE_MALLOC
+        PB_RETURN_ERROR(stream, "no malloc support");
+#else
+        if (stream->bytes_left < size)
+            PB_RETURN_ERROR(stream, "end-of-stream");
+
+        if (!allocate_field(stream, dest, alloc_size, 1))
+            return false;
+        dest = *(void**)dest;
+#endif
+    }
+    else
+    {
+        if (alloc_size > field->data_size)
+            PB_RETURN_ERROR(stream, "string overflow");
+    }
+    
+    status = pb_read(stream, (pb_byte_t*)dest, size);
+    *((pb_byte_t*)dest + size) = 0;
+    return status;
+}
+
+static bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    bool status;
+    pb_istream_t substream;
+    const pb_field_t* submsg_fields = (const pb_field_t*)field->ptr;
+    
+    if (!pb_make_string_substream(stream, &substream))
+        return false;
+    
+    if (field->ptr == NULL)
+        PB_RETURN_ERROR(stream, "invalid field descriptor");
+    
+    /* New array entries need to be initialized, while required and optional
+     * submessages have already been initialized in the top-level pb_decode. */
+    if (PB_HTYPE(field->type) == PB_HTYPE_REPEATED)
+        status = pb_decode(&substream, submsg_fields, dest);
+    else
+        status = pb_decode_noinit(&substream, submsg_fields, dest);
+    
+    if (!pb_close_string_substream(stream, &substream))
+        return false;
+    return status;
+}
+
+static bool checkreturn pb_dec_fixed_length_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+    uint32_t size;
+
+    if (!pb_decode_varint32(stream, &size))
+        return false;
+
+    if (size > PB_SIZE_MAX)
+        PB_RETURN_ERROR(stream, "bytes overflow");
+
+    if (size == 0)
+    {
+        /* As a special case, treat empty bytes string as all zeros for fixed_length_bytes. */
+        memset(dest, 0, field->data_size);
+        return true;
+    }
+
+    if (size != field->data_size)
+        PB_RETURN_ERROR(stream, "incorrect fixed length bytes size");
+
+    return pb_read(stream, (pb_byte_t*)dest, field->data_size);
+}
diff --git a/ChattingApp 000/Pods/nanopb/pb_decode.h b/ChattingApp 000/Pods/nanopb/pb_decode.h
new file mode 100644
index 0000000..3577c20
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_decode.h	
@@ -0,0 +1,178 @@
+/* pb_decode.h: Functions to decode protocol buffers. Depends on pb_decode.c.
+ * The main function is pb_decode. You also need an input stream, and the
+ * field descriptions created by nanopb_generator.py.
+ */
+
+#ifndef PB_DECODE_H_INCLUDED
+#define PB_DECODE_H_INCLUDED
+
+#include "pb.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Structure for defining custom input streams. You will need to provide
+ * a callback function to read the bytes from your storage, which can be
+ * for example a file or a network socket.
+ * 
+ * The callback must conform to these rules:
+ *
+ * 1) Return false on IO errors. This will cause decoding to abort.
+ * 2) You can use state to store your own data (e.g. buffer pointer),
+ *    and rely on pb_read to verify that no-body reads past bytes_left.
+ * 3) Your callback may be used with substreams, in which case bytes_left
+ *    is different than from the main stream. Don't use bytes_left to compute
+ *    any pointers.
+ */
+struct pb_istream_s
+{
+#ifdef PB_BUFFER_ONLY
+    /* Callback pointer is not used in buffer-only configuration.
+     * Having an int pointer here allows binary compatibility but
+     * gives an error if someone tries to assign callback function.
+     */
+    int *callback;
+#else
+    bool (*callback)(pb_istream_t *stream, pb_byte_t *buf, size_t count);
+#endif
+
+    void *state; /* Free field for use by callback implementation */
+    size_t bytes_left;
+    
+#ifndef PB_NO_ERRMSG
+    const char *errmsg;
+#endif
+};
+
+/***************************
+ * Main decoding functions *
+ ***************************/
+ 
+/* Decode a single protocol buffers message from input stream into a C structure.
+ * Returns true on success, false on any failure.
+ * The actual struct pointed to by dest must match the description in fields.
+ * Callback fields of the destination structure must be initialized by caller.
+ * All other fields will be initialized by this function.
+ *
+ * Example usage:
+ *    MyMessage msg = {};
+ *    uint8_t buffer[64];
+ *    pb_istream_t stream;
+ *    
+ *    // ... read some data into buffer ...
+ *
+ *    stream = pb_istream_from_buffer(buffer, count);
+ *    pb_decode(&stream, MyMessage_fields, &msg);
+ */
+bool pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct);
+
+/* Same as pb_decode, except does not initialize the destination structure
+ * to default values. This is slightly faster if you need no default values
+ * and just do memset(struct, 0, sizeof(struct)) yourself.
+ *
+ * This can also be used for 'merging' two messages, i.e. update only the
+ * fields that exist in the new message.
+ *
+ * Note: If this function returns with an error, it will not release any
+ * dynamically allocated fields. You will need to call pb_release() yourself.
+ */
+bool pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct);
+
+/* Same as pb_decode, except expects the stream to start with the message size
+ * encoded as varint. Corresponds to parseDelimitedFrom() in Google's
+ * protobuf API.
+ */
+bool pb_decode_delimited(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct);
+
+/* Same as pb_decode_delimited, except that it does not initialize the destination structure.
+ * See pb_decode_noinit
+ */
+bool pb_decode_delimited_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct);
+
+/* Same as pb_decode, except allows the message to be terminated with a null byte.
+ * NOTE: Until nanopb-0.4.0, pb_decode() also allows null-termination. This behaviour
+ * is not supported in most other protobuf implementations, so pb_decode_delimited()
+ * is a better option for compatibility.
+ */
+bool pb_decode_nullterminated(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct);
+
+#ifdef PB_ENABLE_MALLOC
+/* Release any allocated pointer fields. If you use dynamic allocation, you should
+ * call this for any successfully decoded message when you are done with it. If
+ * pb_decode() returns with an error, the message is already released.
+ */
+void pb_release(const pb_field_t fields[], void *dest_struct);
+#endif
+
+
+/**************************************
+ * Functions for manipulating streams *
+ **************************************/
+
+/* Create an input stream for reading from a memory buffer.
+ *
+ * Alternatively, you can use a custom stream that reads directly from e.g.
+ * a file or a network socket.
+ */
+pb_istream_t pb_istream_from_buffer(const pb_byte_t *buf, size_t bufsize);
+
+/* Function to read from a pb_istream_t. You can use this if you need to
+ * read some custom header data, or to read data in field callbacks.
+ */
+bool pb_read(pb_istream_t *stream, pb_byte_t *buf, size_t count);
+
+
+/************************************************
+ * Helper functions for writing field callbacks *
+ ************************************************/
+
+/* Decode the tag for the next field in the stream. Gives the wire type and
+ * field tag. At end of the message, returns false and sets eof to true. */
+bool pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, uint32_t *tag, bool *eof);
+
+/* Skip the field payload data, given the wire type. */
+bool pb_skip_field(pb_istream_t *stream, pb_wire_type_t wire_type);
+
+/* Decode an integer in the varint format. This works for enum, int32,
+ * int64, uint32 and uint64 field types. */
+#ifndef PB_WITHOUT_64BIT
+bool pb_decode_varint(pb_istream_t *stream, uint64_t *dest);
+#else
+#define pb_decode_varint pb_decode_varint32
+#endif
+
+/* Decode an integer in the varint format. This works for enum, int32,
+ * and uint32 field types. */
+bool pb_decode_varint32(pb_istream_t *stream, uint32_t *dest);
+
+/* Decode a bool value in varint format. */
+bool pb_decode_bool(pb_istream_t *stream, bool *dest);
+
+/* Decode an integer in the zig-zagged svarint format. This works for sint32
+ * and sint64. */
+#ifndef PB_WITHOUT_64BIT
+bool pb_decode_svarint(pb_istream_t *stream, int64_t *dest);
+#else
+bool pb_decode_svarint(pb_istream_t *stream, int32_t *dest);
+#endif
+
+/* Decode a fixed32, sfixed32 or float value. You need to pass a pointer to
+ * a 4-byte wide C variable. */
+bool pb_decode_fixed32(pb_istream_t *stream, void *dest);
+
+#ifndef PB_WITHOUT_64BIT
+/* Decode a fixed64, sfixed64 or double value. You need to pass a pointer to
+ * a 8-byte wide C variable. */
+bool pb_decode_fixed64(pb_istream_t *stream, void *dest);
+#endif
+
+/* Make a limited-length substream for reading a PB_WT_STRING field. */
+bool pb_make_string_substream(pb_istream_t *stream, pb_istream_t *substream);
+bool pb_close_string_substream(pb_istream_t *stream, pb_istream_t *substream);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/ChattingApp 000/Pods/nanopb/pb_encode.c b/ChattingApp 000/Pods/nanopb/pb_encode.c
new file mode 100644
index 0000000..371d256
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_encode.c	
@@ -0,0 +1,913 @@
+/* pb_encode.c -- encode a protobuf using minimal resources
+ *
+ * 2011 Petteri Aimonen <jpa@kapsi.fi>
+ */
+
+#include "pb.h"
+#include "pb_encode.h"
+#include "pb_common.h"
+
+/* Use the GCC warn_unused_result attribute to check that all return values
+ * are propagated correctly. On other compilers and gcc before 3.4.0 just
+ * ignore the annotation.
+ */
+#if !defined(__GNUC__) || ( __GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
+    #define checkreturn
+#else
+    #define checkreturn __attribute__((warn_unused_result))
+#endif
+
+/**************************************
+ * Declarations internal to this file *
+ **************************************/
+typedef bool (*pb_encoder_t)(pb_ostream_t *stream, const pb_field_t *field, const void *src) checkreturn;
+
+static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
+static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field, const void *pData, size_t count, pb_encoder_t func);
+static bool checkreturn encode_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData);
+static bool checkreturn default_extension_encoder(pb_ostream_t *stream, const pb_extension_t *extension);
+static bool checkreturn encode_extension_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData);
+static void *pb_const_cast(const void *p);
+static bool checkreturn pb_enc_bool(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+static bool checkreturn pb_enc_fixed_length_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src);
+
+#ifdef PB_WITHOUT_64BIT
+#define pb_int64_t int32_t
+#define pb_uint64_t uint32_t
+
+static bool checkreturn pb_encode_negative_varint(pb_ostream_t *stream, pb_uint64_t value);
+#else
+#define pb_int64_t int64_t
+#define pb_uint64_t uint64_t
+#endif
+
+/* --- Function pointers to field encoders ---
+ * Order in the array must match pb_action_t LTYPE numbering.
+ */
+static const pb_encoder_t PB_ENCODERS[PB_LTYPES_COUNT] = {
+    &pb_enc_bool,
+    &pb_enc_varint,
+    &pb_enc_uvarint,
+    &pb_enc_svarint,
+    &pb_enc_fixed32,
+    &pb_enc_fixed64,
+    
+    &pb_enc_bytes,
+    &pb_enc_string,
+    &pb_enc_submessage,
+    NULL, /* extensions */
+    &pb_enc_fixed_length_bytes
+};
+
+/*******************************
+ * pb_ostream_t implementation *
+ *******************************/
+
+static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count)
+{
+    size_t i;
+    pb_byte_t *dest = (pb_byte_t*)stream->state;
+    stream->state = dest + count;
+    
+    for (i = 0; i < count; i++)
+        dest[i] = buf[i];
+    
+    return true;
+}
+
+pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize)
+{
+    pb_ostream_t stream;
+#ifdef PB_BUFFER_ONLY
+    stream.callback = (void*)1; /* Just a marker value */
+#else
+    stream.callback = &buf_write;
+#endif
+    stream.state = buf;
+    stream.max_size = bufsize;
+    stream.bytes_written = 0;
+#ifndef PB_NO_ERRMSG
+    stream.errmsg = NULL;
+#endif
+    return stream;
+}
+
+bool checkreturn pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count)
+{
+    if (count > 0 && stream->callback != NULL)
+    {
+        if (stream->bytes_written + count < stream->bytes_written ||
+            stream->bytes_written + count > stream->max_size)
+        {
+            PB_RETURN_ERROR(stream, "stream full");
+        }
+
+#ifdef PB_BUFFER_ONLY
+        if (!buf_write(stream, buf, count))
+            PB_RETURN_ERROR(stream, "io error");
+#else        
+        if (!stream->callback(stream, buf, count))
+            PB_RETURN_ERROR(stream, "io error");
+#endif
+    }
+    
+    stream->bytes_written += count;
+    return true;
+}
+
+/*************************
+ * Encode a single field *
+ *************************/
+
+/* Read a bool value without causing undefined behavior even if the value
+ * is invalid. See issue #434 and
+ * https://stackoverflow.com/questions/27661768/weird-results-for-conditional
+ */
+static bool safe_read_bool(const void *pSize)
+{
+    const char *p = (const char *)pSize;
+    size_t i;
+    for (i = 0; i < sizeof(bool); i++)
+    {
+        if (p[i] != 0)
+            return true;
+    }
+    return false;
+}
+
+/* Encode a static array. Handles the size calculations and possible packing. */
+static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field,
+                         const void *pData, size_t count, pb_encoder_t func)
+{
+    size_t i;
+    const void *p;
+#ifndef PB_ENCODE_ARRAYS_UNPACKED
+    size_t size;
+#endif
+
+    if (count == 0)
+        return true;
+
+    if (PB_ATYPE(field->type) != PB_ATYPE_POINTER && count > field->array_size)
+        PB_RETURN_ERROR(stream, "array max size exceeded");
+    
+#ifndef PB_ENCODE_ARRAYS_UNPACKED
+    /* We always pack arrays if the datatype allows it. */
+    if (PB_LTYPE(field->type) <= PB_LTYPE_LAST_PACKABLE)
+    {
+        if (!pb_encode_tag(stream, PB_WT_STRING, field->tag))
+            return false;
+        
+        /* Determine the total size of packed array. */
+        if (PB_LTYPE(field->type) == PB_LTYPE_FIXED32)
+        {
+            size = 4 * count;
+        }
+        else if (PB_LTYPE(field->type) == PB_LTYPE_FIXED64)
+        {
+            size = 8 * count;
+        }
+        else
+        { 
+            pb_ostream_t sizestream = PB_OSTREAM_SIZING;
+            p = pData;
+            for (i = 0; i < count; i++)
+            {
+                if (!func(&sizestream, field, p))
+                    return false;
+                p = (const char*)p + field->data_size;
+            }
+            size = sizestream.bytes_written;
+        }
+        
+        if (!pb_encode_varint(stream, (pb_uint64_t)size))
+            return false;
+        
+        if (stream->callback == NULL)
+            return pb_write(stream, NULL, size); /* Just sizing.. */
+        
+        /* Write the data */
+        p = pData;
+        for (i = 0; i < count; i++)
+        {
+            if (!func(stream, field, p))
+                return false;
+            p = (const char*)p + field->data_size;
+        }
+    }
+    else
+#endif
+    {
+        p = pData;
+        for (i = 0; i < count; i++)
+        {
+            if (!pb_encode_tag_for_field(stream, field))
+                return false;
+
+            /* Normally the data is stored directly in the array entries, but
+             * for pointer-type string and bytes fields, the array entries are
+             * actually pointers themselves also. So we have to dereference once
+             * more to get to the actual data. */
+            if (PB_ATYPE(field->type) == PB_ATYPE_POINTER &&
+                (PB_LTYPE(field->type) == PB_LTYPE_STRING ||
+                 PB_LTYPE(field->type) == PB_LTYPE_BYTES))
+            {
+                if (!func(stream, field, *(const void* const*)p))
+                    return false;
+            }
+            else
+            {
+                if (!func(stream, field, p))
+                    return false;
+            }
+            p = (const char*)p + field->data_size;
+        }
+    }
+    
+    return true;
+}
+
+/* In proto3, all fields are optional and are only encoded if their value is "non-zero".
+ * This function implements the check for the zero value. */
+static bool pb_check_proto3_default_value(const pb_field_t *field, const void *pData)
+{
+    pb_type_t type = field->type;
+    const void *pSize = (const char*)pData + field->size_offset;
+
+    if (PB_HTYPE(type) == PB_HTYPE_REQUIRED)
+    {
+        /* Required proto2 fields inside proto3 submessage, pretty rare case */
+        return false;
+    }
+    else if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
+    {
+        /* Repeated fields inside proto3 submessage: present if count != 0 */
+        if (field->size_offset != 0)
+            return *(const pb_size_t*)pSize == 0;
+        else if (PB_ATYPE(type) == PB_ATYPE_STATIC)
+            return false; /* Fixed length array */
+    }
+    else if (PB_HTYPE(type) == PB_HTYPE_ONEOF)
+    {
+        /* Oneof fields */
+        return *(const pb_size_t*)pSize == 0;
+    }
+    else if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL && field->size_offset != 0)
+    {
+        /* Proto2 optional fields inside proto3 submessage */
+        return safe_read_bool(pSize) == false;
+    }
+
+    /* Rest is proto3 singular fields */
+
+    if (PB_ATYPE(type) == PB_ATYPE_STATIC)
+    {
+        if (PB_LTYPE(type) == PB_LTYPE_BYTES)
+        {
+            const pb_bytes_array_t *bytes = (const pb_bytes_array_t*)pData;
+            return bytes->size == 0;
+        }
+        else if (PB_LTYPE(type) == PB_LTYPE_STRING)
+        {
+            return *(const char*)pData == '\0';
+        }
+        else if (PB_LTYPE(type) == PB_LTYPE_FIXED_LENGTH_BYTES)
+        {
+            /* Fixed length bytes is only empty if its length is fixed
+             * as 0. Which would be pretty strange, but we can check
+             * it anyway. */
+            return field->data_size == 0;
+        }
+        else if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE)
+        {
+            /* Check all fields in the submessage to find if any of them
+             * are non-zero. The comparison cannot be done byte-per-byte
+             * because the C struct may contain padding bytes that must
+             * be skipped.
+             */
+            pb_field_iter_t iter;
+            if (pb_field_iter_begin(&iter, (const pb_field_t*)field->ptr, pb_const_cast(pData)))
+            {
+                do
+                {
+                    if (!pb_check_proto3_default_value(iter.pos, iter.pData))
+                    {
+                        return false;
+                    }
+                } while (pb_field_iter_next(&iter));
+            }
+            return true;
+        }
+    }
+
+    /* Compares pointers to NULL in case of FT_POINTER */
+    if (PB_ATYPE(type) == PB_ATYPE_POINTER && PB_LTYPE(type) > PB_LTYPE_LAST_PACKABLE)
+    {
+        return !*(const void**)((uintptr_t)pData);
+    }
+    
+	{
+	    /* Catch-all branch that does byte-per-byte comparison for zero value.
+	     *
+	     * This is for all pointer fields, and for static PB_LTYPE_VARINT,
+	     * UVARINT, SVARINT, FIXED32, FIXED64, EXTENSION fields, and also
+	     * callback fields. These all have integer or pointer value which
+	     * can be compared with 0.
+	     */
+	    pb_size_t i;
+	    const char *p = (const char*)pData;
+	    for (i = 0; i < field->data_size; i++)
+	    {
+	        if (p[i] != 0)
+	        {
+	            return false;
+	        }
+	    }
+
+	    return true;
+	}
+}
+
+/* Encode a field with static or pointer allocation, i.e. one whose data
+ * is available to the encoder directly. */
+static bool checkreturn encode_basic_field(pb_ostream_t *stream,
+    const pb_field_t *field, const void *pData)
+{
+    pb_encoder_t func;
+    bool implicit_has;
+    const void *pSize = &implicit_has;
+    
+    func = PB_ENCODERS[PB_LTYPE(field->type)];
+    
+    if (field->size_offset)
+    {
+        /* Static optional, repeated or oneof field */
+        pSize = (const char*)pData + field->size_offset;
+    }
+    else if (PB_HTYPE(field->type) == PB_HTYPE_OPTIONAL)
+    {
+        /* Proto3 style field, optional but without explicit has_ field. */
+        implicit_has = !pb_check_proto3_default_value(field, pData);
+    }
+    else
+    {
+        /* Required field, always present */
+        implicit_has = true;
+    }
+
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+    {
+        /* pData is a pointer to the field, which contains pointer to
+         * the data. If the 2nd pointer is NULL, it is interpreted as if
+         * the has_field was false.
+         */
+        pData = *(const void* const*)pData;
+        implicit_has = (pData != NULL);
+    }
+
+    switch (PB_HTYPE(field->type))
+    {
+        case PB_HTYPE_REQUIRED:
+            if (!pData)
+                PB_RETURN_ERROR(stream, "missing required field");
+            if (!pb_encode_tag_for_field(stream, field))
+                return false;
+            if (!func(stream, field, pData))
+                return false;
+            break;
+        
+        case PB_HTYPE_OPTIONAL:
+            if (safe_read_bool(pSize))
+            {
+                if (!pb_encode_tag_for_field(stream, field))
+                    return false;
+            
+                if (!func(stream, field, pData))
+                    return false;
+            }
+            break;
+        
+        case PB_HTYPE_REPEATED: {
+            pb_size_t count;
+            if (field->size_offset != 0) {
+                count = *(const pb_size_t*)pSize;
+            } else {
+                count = field->array_size;
+            }
+            if (!encode_array(stream, field, pData, count, func))
+                return false;
+            break;
+        }
+        
+        case PB_HTYPE_ONEOF:
+            if (*(const pb_size_t*)pSize == field->tag)
+            {
+                if (!pb_encode_tag_for_field(stream, field))
+                    return false;
+
+                if (!func(stream, field, pData))
+                    return false;
+            }
+            break;
+            
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+    
+    return true;
+}
+
+/* Encode a field with callback semantics. This means that a user function is
+ * called to provide and encode the actual data. */
+static bool checkreturn encode_callback_field(pb_ostream_t *stream,
+    const pb_field_t *field, const void *pData)
+{
+    const pb_callback_t *callback = (const pb_callback_t*)pData;
+    
+#ifdef PB_OLD_CALLBACK_STYLE
+    const void *arg = callback->arg;
+#else
+    void * const *arg = &(callback->arg);
+#endif    
+    
+    if (callback->funcs.encode != NULL)
+    {
+        if (!callback->funcs.encode(stream, field, arg))
+            PB_RETURN_ERROR(stream, "callback error");
+    }
+    return true;
+}
+
+/* Encode a single field of any callback or static type. */
+static bool checkreturn encode_field(pb_ostream_t *stream,
+    const pb_field_t *field, const void *pData)
+{
+    switch (PB_ATYPE(field->type))
+    {
+        case PB_ATYPE_STATIC:
+        case PB_ATYPE_POINTER:
+            return encode_basic_field(stream, field, pData);
+        
+        case PB_ATYPE_CALLBACK:
+            return encode_callback_field(stream, field, pData);
+        
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+}
+
+/* Default handler for extension fields. Expects to have a pb_field_t
+ * pointer in the extension->type->arg field. */
+static bool checkreturn default_extension_encoder(pb_ostream_t *stream,
+    const pb_extension_t *extension)
+{
+    const pb_field_t *field = (const pb_field_t*)extension->type->arg;
+    
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+    {
+        /* For pointer extensions, the pointer is stored directly
+         * in the extension structure. This avoids having an extra
+         * indirection. */
+        return encode_field(stream, field, &extension->dest);
+    }
+    else
+    {
+        return encode_field(stream, field, extension->dest);
+    }
+}
+
+/* Walk through all the registered extensions and give them a chance
+ * to encode themselves. */
+static bool checkreturn encode_extension_field(pb_ostream_t *stream,
+    const pb_field_t *field, const void *pData)
+{
+    const pb_extension_t *extension = *(const pb_extension_t* const *)pData;
+    PB_UNUSED(field);
+    
+    while (extension)
+    {
+        bool status;
+        if (extension->type->encode)
+            status = extension->type->encode(stream, extension);
+        else
+            status = default_extension_encoder(stream, extension);
+
+        if (!status)
+            return false;
+        
+        extension = extension->next;
+    }
+    
+    return true;
+}
+
+/*********************
+ * Encode all fields *
+ *********************/
+
+static void *pb_const_cast(const void *p)
+{
+    /* Note: this casts away const, in order to use the common field iterator
+     * logic for both encoding and decoding. */
+    union {
+        void *p1;
+        const void *p2;
+    } t;
+    t.p2 = p;
+    return t.p1;
+}
+
+bool checkreturn pb_encode(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
+{
+    pb_field_iter_t iter;
+    if (!pb_field_iter_begin(&iter, fields, pb_const_cast(src_struct)))
+        return true; /* Empty message type */
+    
+    do {
+        if (PB_LTYPE(iter.pos->type) == PB_LTYPE_EXTENSION)
+        {
+            /* Special case for the extension field placeholder */
+            if (!encode_extension_field(stream, iter.pos, iter.pData))
+                return false;
+        }
+        else
+        {
+            /* Regular field */
+            if (!encode_field(stream, iter.pos, iter.pData))
+                return false;
+        }
+    } while (pb_field_iter_next(&iter));
+    
+    return true;
+}
+
+bool pb_encode_delimited(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
+{
+    return pb_encode_submessage(stream, fields, src_struct);
+}
+
+bool pb_encode_nullterminated(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
+{
+    const pb_byte_t zero = 0;
+
+    if (!pb_encode(stream, fields, src_struct))
+        return false;
+
+    return pb_write(stream, &zero, 1);
+}
+
+bool pb_get_encoded_size(size_t *size, const pb_field_t fields[], const void *src_struct)
+{
+    pb_ostream_t stream = PB_OSTREAM_SIZING;
+    
+    if (!pb_encode(&stream, fields, src_struct))
+        return false;
+    
+    *size = stream.bytes_written;
+    return true;
+}
+
+/********************
+ * Helper functions *
+ ********************/
+
+#ifdef PB_WITHOUT_64BIT
+bool checkreturn pb_encode_negative_varint(pb_ostream_t *stream, pb_uint64_t value)
+{
+  pb_byte_t buffer[10];
+  size_t i = 0;
+  size_t compensation = 32;/* we need to compensate 32 bits all set to 1 */
+
+  while (value)
+  {
+    buffer[i] = (pb_byte_t)((value & 0x7F) | 0x80);
+    value >>= 7;
+    if (compensation)
+    {
+      /* re-set all the compensation bits we can or need */
+      size_t bits = compensation > 7 ? 7 : compensation;
+      value ^= (pb_uint64_t)((0xFFu >> (8 - bits)) << 25); /* set the number of bits needed on the lowest of the most significant 7 bits */
+      compensation -= bits;
+    }
+    i++;
+  }
+  buffer[i - 1] &= 0x7F; /* Unset top bit on last byte */
+
+  return pb_write(stream, buffer, i);
+}
+#endif
+
+bool checkreturn pb_encode_varint(pb_ostream_t *stream, pb_uint64_t value)
+{
+    pb_byte_t buffer[10];
+    size_t i = 0;
+    
+    if (value <= 0x7F)
+    {
+        pb_byte_t v = (pb_byte_t)value;
+        return pb_write(stream, &v, 1);
+    }
+    
+    while (value)
+    {
+        buffer[i] = (pb_byte_t)((value & 0x7F) | 0x80);
+        value >>= 7;
+        i++;
+    }
+    buffer[i-1] &= 0x7F; /* Unset top bit on last byte */
+    
+    return pb_write(stream, buffer, i);
+}
+
+bool checkreturn pb_encode_svarint(pb_ostream_t *stream, pb_int64_t value)
+{
+    pb_uint64_t zigzagged;
+    if (value < 0)
+        zigzagged = ~((pb_uint64_t)value << 1);
+    else
+        zigzagged = (pb_uint64_t)value << 1;
+    
+    return pb_encode_varint(stream, zigzagged);
+}
+
+bool checkreturn pb_encode_fixed32(pb_ostream_t *stream, const void *value)
+{
+    uint32_t val = *(const uint32_t*)value;
+    pb_byte_t bytes[4];
+    bytes[0] = (pb_byte_t)(val & 0xFF);
+    bytes[1] = (pb_byte_t)((val >> 8) & 0xFF);
+    bytes[2] = (pb_byte_t)((val >> 16) & 0xFF);
+    bytes[3] = (pb_byte_t)((val >> 24) & 0xFF);
+    return pb_write(stream, bytes, 4);
+}
+
+#ifndef PB_WITHOUT_64BIT
+bool checkreturn pb_encode_fixed64(pb_ostream_t *stream, const void *value)
+{
+    uint64_t val = *(const uint64_t*)value;
+    pb_byte_t bytes[8];
+    bytes[0] = (pb_byte_t)(val & 0xFF);
+    bytes[1] = (pb_byte_t)((val >> 8) & 0xFF);
+    bytes[2] = (pb_byte_t)((val >> 16) & 0xFF);
+    bytes[3] = (pb_byte_t)((val >> 24) & 0xFF);
+    bytes[4] = (pb_byte_t)((val >> 32) & 0xFF);
+    bytes[5] = (pb_byte_t)((val >> 40) & 0xFF);
+    bytes[6] = (pb_byte_t)((val >> 48) & 0xFF);
+    bytes[7] = (pb_byte_t)((val >> 56) & 0xFF);
+    return pb_write(stream, bytes, 8);
+}
+#endif
+
+bool checkreturn pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number)
+{
+    pb_uint64_t tag = ((pb_uint64_t)field_number << 3) | wiretype;
+    return pb_encode_varint(stream, tag);
+}
+
+bool checkreturn pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_t *field)
+{
+    pb_wire_type_t wiretype;
+    switch (PB_LTYPE(field->type))
+    {
+        case PB_LTYPE_BOOL:
+        case PB_LTYPE_VARINT:
+        case PB_LTYPE_UVARINT:
+        case PB_LTYPE_SVARINT:
+            wiretype = PB_WT_VARINT;
+            break;
+        
+        case PB_LTYPE_FIXED32:
+            wiretype = PB_WT_32BIT;
+            break;
+        
+        case PB_LTYPE_FIXED64:
+            wiretype = PB_WT_64BIT;
+            break;
+        
+        case PB_LTYPE_BYTES:
+        case PB_LTYPE_STRING:
+        case PB_LTYPE_SUBMESSAGE:
+        case PB_LTYPE_FIXED_LENGTH_BYTES:
+            wiretype = PB_WT_STRING;
+            break;
+        
+        default:
+            PB_RETURN_ERROR(stream, "invalid field type");
+    }
+    
+    return pb_encode_tag(stream, wiretype, field->tag);
+}
+
+bool checkreturn pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size)
+{
+    if (!pb_encode_varint(stream, (pb_uint64_t)size))
+        return false;
+    
+    return pb_write(stream, buffer, size);
+}
+
+bool checkreturn pb_encode_submessage(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct)
+{
+    /* First calculate the message size using a non-writing substream. */
+    pb_ostream_t substream = PB_OSTREAM_SIZING;
+    size_t size;
+    bool status;
+    
+    if (!pb_encode(&substream, fields, src_struct))
+    {
+#ifndef PB_NO_ERRMSG
+        stream->errmsg = substream.errmsg;
+#endif
+        return false;
+    }
+    
+    size = substream.bytes_written;
+    
+    if (!pb_encode_varint(stream, (pb_uint64_t)size))
+        return false;
+    
+    if (stream->callback == NULL)
+        return pb_write(stream, NULL, size); /* Just sizing */
+    
+    if (stream->bytes_written + size > stream->max_size)
+        PB_RETURN_ERROR(stream, "stream full");
+        
+    /* Use a substream to verify that a callback doesn't write more than
+     * what it did the first time. */
+    substream.callback = stream->callback;
+    substream.state = stream->state;
+    substream.max_size = size;
+    substream.bytes_written = 0;
+#ifndef PB_NO_ERRMSG
+    substream.errmsg = NULL;
+#endif
+    
+    status = pb_encode(&substream, fields, src_struct);
+    
+    stream->bytes_written += substream.bytes_written;
+    stream->state = substream.state;
+#ifndef PB_NO_ERRMSG
+    stream->errmsg = substream.errmsg;
+#endif
+    
+    if (substream.bytes_written != size)
+        PB_RETURN_ERROR(stream, "submsg size changed");
+    
+    return status;
+}
+
+/* Field encoders */
+
+static bool checkreturn pb_enc_bool(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    uint32_t value = safe_read_bool(src) ? 1 : 0;
+    PB_UNUSED(field);
+    return pb_encode_varint(stream, value);
+}
+
+static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    pb_int64_t value = 0;
+    
+    if (field->data_size == sizeof(int_least8_t))
+        value = *(const int_least8_t*)src;
+    else if (field->data_size == sizeof(int_least16_t))
+        value = *(const int_least16_t*)src;
+    else if (field->data_size == sizeof(int32_t))
+        value = *(const int32_t*)src;
+    else if (field->data_size == sizeof(pb_int64_t))
+        value = *(const pb_int64_t*)src;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+    
+#ifdef PB_WITHOUT_64BIT
+    if (value < 0)
+      return pb_encode_negative_varint(stream, (pb_uint64_t)value);
+    else
+#endif
+      return pb_encode_varint(stream, (pb_uint64_t)value);
+}
+
+static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    pb_uint64_t value = 0;
+    
+    if (field->data_size == sizeof(uint_least8_t))
+        value = *(const uint_least8_t*)src;
+    else if (field->data_size == sizeof(uint_least16_t))
+        value = *(const uint_least16_t*)src;
+    else if (field->data_size == sizeof(uint32_t))
+        value = *(const uint32_t*)src;
+    else if (field->data_size == sizeof(pb_uint64_t))
+        value = *(const pb_uint64_t*)src;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+    
+    return pb_encode_varint(stream, value);
+}
+
+static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    pb_int64_t value = 0;
+    
+    if (field->data_size == sizeof(int_least8_t))
+        value = *(const int_least8_t*)src;
+    else if (field->data_size == sizeof(int_least16_t))
+        value = *(const int_least16_t*)src;
+    else if (field->data_size == sizeof(int32_t))
+        value = *(const int32_t*)src;
+    else if (field->data_size == sizeof(pb_int64_t))
+        value = *(const pb_int64_t*)src;
+    else
+        PB_RETURN_ERROR(stream, "invalid data_size");
+    
+    return pb_encode_svarint(stream, value);
+}
+
+static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    PB_UNUSED(field);
+#ifndef PB_WITHOUT_64BIT
+    return pb_encode_fixed64(stream, src);
+#else
+    PB_UNUSED(src);
+    PB_RETURN_ERROR(stream, "no 64bit support");
+#endif
+}
+
+static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    PB_UNUSED(field);
+    return pb_encode_fixed32(stream, src);
+}
+
+static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    const pb_bytes_array_t *bytes = NULL;
+    size_t allocsize;
+
+    bytes = (const pb_bytes_array_t*)src;
+    
+    if (src == NULL)
+    {
+        /* Treat null pointer as an empty bytes field */
+        return pb_encode_string(stream, NULL, 0);
+    }
+    
+    allocsize = PB_BYTES_ARRAY_T_ALLOCSIZE(bytes->size);
+    if (allocsize < bytes->size ||
+        (PB_ATYPE(field->type) == PB_ATYPE_STATIC && allocsize > field->data_size))
+    {
+        PB_RETURN_ERROR(stream, "bytes size exceeded");
+    }
+    
+    return pb_encode_string(stream, bytes->bytes, bytes->size);
+}
+
+static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    size_t size = 0;
+    size_t max_size = field->data_size;
+    const char *p = (const char*)src;
+    
+    if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+        max_size = (size_t)-1;
+
+    if (src == NULL)
+    {
+        size = 0; /* Treat null pointer as an empty string */
+    }
+    else
+    {
+        /* strnlen() is not always available, so just use a loop */
+        while (size < max_size && *p != '\0')
+        {
+            size++;
+            p++;
+        }
+    }
+
+    return pb_encode_string(stream, (const pb_byte_t*)src, size);
+}
+
+static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    if (field->ptr == NULL)
+        PB_RETURN_ERROR(stream, "invalid field descriptor");
+    
+    return pb_encode_submessage(stream, (const pb_field_t*)field->ptr, src);
+}
+
+static bool checkreturn pb_enc_fixed_length_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src)
+{
+    return pb_encode_string(stream, (const pb_byte_t*)src, field->data_size);
+}
+
diff --git a/ChattingApp 000/Pods/nanopb/pb_encode.h b/ChattingApp 000/Pods/nanopb/pb_encode.h
new file mode 100644
index 0000000..b1d822f
--- /dev/null
+++ b/ChattingApp 000/Pods/nanopb/pb_encode.h	
@@ -0,0 +1,170 @@
+/* pb_encode.h: Functions to encode protocol buffers. Depends on pb_encode.c.
+ * The main function is pb_encode. You also need an output stream, and the
+ * field descriptions created by nanopb_generator.py.
+ */
+
+#ifndef PB_ENCODE_H_INCLUDED
+#define PB_ENCODE_H_INCLUDED
+
+#include "pb.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Structure for defining custom output streams. You will need to provide
+ * a callback function to write the bytes to your storage, which can be
+ * for example a file or a network socket.
+ *
+ * The callback must conform to these rules:
+ *
+ * 1) Return false on IO errors. This will cause encoding to abort.
+ * 2) You can use state to store your own data (e.g. buffer pointer).
+ * 3) pb_write will update bytes_written after your callback runs.
+ * 4) Substreams will modify max_size and bytes_written. Don't use them
+ *    to calculate any pointers.
+ */
+struct pb_ostream_s
+{
+#ifdef PB_BUFFER_ONLY
+    /* Callback pointer is not used in buffer-only configuration.
+     * Having an int pointer here allows binary compatibility but
+     * gives an error if someone tries to assign callback function.
+     * Also, NULL pointer marks a 'sizing stream' that does not
+     * write anything.
+     */
+    int *callback;
+#else
+    bool (*callback)(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
+#endif
+    void *state;          /* Free field for use by callback implementation. */
+    size_t max_size;      /* Limit number of output bytes written (or use SIZE_MAX). */
+    size_t bytes_written; /* Number of bytes written so far. */
+    
+#ifndef PB_NO_ERRMSG
+    const char *errmsg;
+#endif
+};
+
+/***************************
+ * Main encoding functions *
+ ***************************/
+
+/* Encode a single protocol buffers message from C structure into a stream.
+ * Returns true on success, false on any failure.
+ * The actual struct pointed to by src_struct must match the description in fields.
+ * All required fields in the struct are assumed to have been filled in.
+ *
+ * Example usage:
+ *    MyMessage msg = {};
+ *    uint8_t buffer[64];
+ *    pb_ostream_t stream;
+ *
+ *    msg.field1 = 42;
+ *    stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
+ *    pb_encode(&stream, MyMessage_fields, &msg);
+ */
+bool pb_encode(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
+
+/* Same as pb_encode, but prepends the length of the message as a varint.
+ * Corresponds to writeDelimitedTo() in Google's protobuf API.
+ */
+bool pb_encode_delimited(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
+
+/* Same as pb_encode, but appends a null byte to the message for termination.
+ * NOTE: This behaviour is not supported in most other protobuf implementations, so pb_encode_delimited()
+ * is a better option for compatibility.
+ */
+bool pb_encode_nullterminated(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
+
+/* Encode the message to get the size of the encoded data, but do not store
+ * the data. */
+bool pb_get_encoded_size(size_t *size, const pb_field_t fields[], const void *src_struct);
+
+/**************************************
+ * Functions for manipulating streams *
+ **************************************/
+
+/* Create an output stream for writing into a memory buffer.
+ * The number of bytes written can be found in stream.bytes_written after
+ * encoding the message.
+ *
+ * Alternatively, you can use a custom stream that writes directly to e.g.
+ * a file or a network socket.
+ */
+pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize);
+
+/* Pseudo-stream for measuring the size of a message without actually storing
+ * the encoded data.
+ * 
+ * Example usage:
+ *    MyMessage msg = {};
+ *    pb_ostream_t stream = PB_OSTREAM_SIZING;
+ *    pb_encode(&stream, MyMessage_fields, &msg);
+ *    printf("Message size is %d\n", stream.bytes_written);
+ */
+#ifndef PB_NO_ERRMSG
+#define PB_OSTREAM_SIZING {0,0,0,0,0}
+#else
+#define PB_OSTREAM_SIZING {0,0,0,0}
+#endif
+
+/* Function to write into a pb_ostream_t stream. You can use this if you need
+ * to append or prepend some custom headers to the message.
+ */
+bool pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
+
+
+/************************************************
+ * Helper functions for writing field callbacks *
+ ************************************************/
+
+/* Encode field header based on type and field number defined in the field
+ * structure. Call this from the callback before writing out field contents. */
+bool pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_t *field);
+
+/* Encode field header by manually specifying wire type. You need to use this
+ * if you want to write out packed arrays from a callback field. */
+bool pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number);
+
+/* Encode an integer in the varint format.
+ * This works for bool, enum, int32, int64, uint32 and uint64 field types. */
+#ifndef PB_WITHOUT_64BIT
+bool pb_encode_varint(pb_ostream_t *stream, uint64_t value);
+#else
+bool pb_encode_varint(pb_ostream_t *stream, uint32_t value);
+#endif
+
+/* Encode an integer in the zig-zagged svarint format.
+ * This works for sint32 and sint64. */
+#ifndef PB_WITHOUT_64BIT
+bool pb_encode_svarint(pb_ostream_t *stream, int64_t value);
+#else
+bool pb_encode_svarint(pb_ostream_t *stream, int32_t value);
+#endif
+
+/* Encode a string or bytes type field. For strings, pass strlen(s) as size. */
+bool pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size);
+
+/* Encode a fixed32, sfixed32 or float value.
+ * You need to pass a pointer to a 4-byte wide C variable. */
+bool pb_encode_fixed32(pb_ostream_t *stream, const void *value);
+
+#ifndef PB_WITHOUT_64BIT
+/* Encode a fixed64, sfixed64 or double value.
+ * You need to pass a pointer to a 8-byte wide C variable. */
+bool pb_encode_fixed64(pb_ostream_t *stream, const void *value);
+#endif
+
+/* Encode a submessage field.
+ * You need to pass the pb_field_t array and pointer to struct, just like
+ * with pb_encode(). This internally encodes the submessage twice, first to
+ * calculate message size and then to actually write it out.
+ */
+bool pb_encode_submessage(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif

From 6fbdad46512b8885debefcbf6364fce74e0c3ab2 Mon Sep 17 00:00:00 2001
From: tasnim <tasneemjafsher@gmail.com>
Date: Mon, 6 Dec 2021 16:54:32 +0300
Subject: [PATCH 2/2] Done

---
 .DS_Store                                     | Bin 6148 -> 6148 bytes
 ChattingApp 000/.DS_Store                     | Bin 6148 -> 8196 bytes
 .../ChattingApp.xcodeproj/project.pbxproj     |   2 +-
 ChattingApp 000/ChattingApp/.DS_Store         | Bin 6148 -> 10244 bytes
 .../ChattingApp/Base.lproj/.DS_Store          | Bin 0 -> 6148 bytes
 ChattingApp 000/Pods/.DS_Store                | Bin 0 -> 6148 bytes
 6 files changed, 1 insertion(+), 1 deletion(-)
 create mode 100644 ChattingApp 000/ChattingApp/Base.lproj/.DS_Store
 create mode 100644 ChattingApp 000/Pods/.DS_Store

diff --git a/.DS_Store b/.DS_Store
index e3ddb837dc5025933d0f7246705d04fc29af369f..a4e84c23de1affad8e232829fd42aff28d050fa3 100644
GIT binary patch
delta 299
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delta 93
zcmZoMXfc=|#>B)qF;Q%yo}wrd0|Nsi1A_nqLkUABLmopqgCj%1#>C}}lMO^zCU0Ps
upS+Ca`{rD>S&SPCJeW7LbMSKjHE$N=_|80;U&N6Es2!xAWpjkc8fF0V!WC)&

diff --git a/ChattingApp 000/.DS_Store b/ChattingApp 000/.DS_Store
index 3cfa49b28a1259557fb8dc7fe498cc929b4499cb..dfbb98c1edc99a92cd23c57300bf8f9560bbdccf 100644
GIT binary patch
literal 8196
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delta 123
zcmZp1XfcprU|?W$DortDU=RQ@Ie-{MGjUEV6q~50$jH1gU^gQp^W;WBsmW>r?<XG>
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diff --git a/ChattingApp 000/ChattingApp.xcodeproj/project.pbxproj b/ChattingApp 000/ChattingApp.xcodeproj/project.pbxproj
index 4f2b128..f0bdbde 100644
--- a/ChattingApp 000/ChattingApp.xcodeproj/project.pbxproj	
+++ b/ChattingApp 000/ChattingApp.xcodeproj/project.pbxproj	
@@ -87,9 +87,9 @@
 				8FE56DC8273D072D00C6332A /* users.swift */,
 				8FE56DCB273D072D00C6332A /* Favorite.swift */,
 				8FE56DCE273D072D00C6332A /* LoginViewController.swift */,
+				8FE56DCA273D072D00C6332A /* SignUpViewController.swift */,
 				8FE56DCD273D072D00C6332A /* Model.swift */,
 				8FE56DCF273D072D00C6332A /* Profile.swift */,
-				8FE56DCA273D072D00C6332A /* SignUpViewController.swift */,
 				8FE56DCC273D072D00C6332A /* Tab Bar.swift */,
 				102CCA64272CABD000081594 /* Assets.xcassets */,
 				102CCA66272CABD000081594 /* LaunchScreen.storyboard */,
diff --git a/ChattingApp 000/ChattingApp/.DS_Store b/ChattingApp 000/ChattingApp/.DS_Store
index 5008ddfcf53c02e82d7eee2e57c38e5672ef89f6..27cb34d7fdf6cda371c6f66d1ff024e32a4451f4 100644
GIT binary patch
literal 10244
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new file mode 100644
index 0000000000000000000000000000000000000000..629afb2d98b513fb61897421e39239a63f49d2a9
GIT binary patch
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diff --git a/ChattingApp 000/Pods/.DS_Store b/ChattingApp 000/Pods/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..53d639108106c149c633d2418f78123c7ca0cf95
GIT binary patch
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